Surface Water Supply 

of the United States 

1956

Part 11. Pacific Slope Basins in California

Prepared under the direction of J. V. B. WELLS, chief, Surface Water Branch 

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1445

Prepared in cooperation with the States 

of California and Oregon and with other 

agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office 

Washington 25, D.C. - Price $2 (paper cover)
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the State of California and Oregon and with other agencies, by 

personnel of the Water Resources Division, C. G. Paulsen, chief, succeeded by L. B. Leopold, under the general direction of J. V. B. Wells, 

chief, Surface Water Branch, and B. J. Peterson, chief, Basic Records 

Section, succeeded by F. J. Flynn.

The data were collected and computed under supervision of district 

engineers, Surface Water Branch, as follows:

R. C. Briggs (succeeded by R. S. Lord)________Menlo Park, Calif. 

K. N. Phillips___________________________Portland, Oreg.
CALENDAR FOR WATER YEAR 1956

OCTOBER 1955

S M T W T P S

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31

JANUARY 1956

S M T W T F S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

APRIL 1956

S M T W T P S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

JULY 1956

S M T W T P S

1234567

8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

IV

NOVEMBER 1955

5 M T W T P S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30

FEBRUARY 1956

S M T W T F S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29

MAY 1956

5 M T W T F S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30 31

AUGUST 1956

S M T W T P S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29 30 31

DECEMBER 1955

S M T W T P S 

123

4 5 6 7 8 9 10 

11 12 13 14 15 16 17 

18 19 20 21 22 23 24 

25 26 27 28 29 30 31

MARCH 1956

S M T W T P S 

123

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30 31

JUNE 1956

5 M T W T F S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30

SEPTEMBER 1956

S M T W T P S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30
CONTENTS

Page 

Scope of work....................................................................... 1

Cooperation......................................................................... 1

Division of work.................................................................... 1

Definition of terms and abbreviations............................................... 2

Downstream order of listing gaging stations......................................... 2

Explanation of data................................................................. 3

Accuracy of field data and computed results......................................... 7

Publications........................................................................ 8

Records of discharge collected by agencies other than the Geological Survey......... 11

Hydrologic conditions............................................................... 14

Gaging-statlon records.............................................................. 16

Tia Juana River basin

Cottonwool Creek (head of Tia Juana River) at Morena Dam, Calif................... 16

Cottonwood Creek at Barrett Dam, near Dulzura, Calif.............................. 17

Dulzura conduit near Dulzura, Calif............................................. 18

Cottonwood Creek above Tecate Creek, near Dulzura, Calif.......................... 18

Tecate Creek:

Campo Creek near Campo, Calif................................................. 19

Tia Juana River near Dulzura, Calif............................................... 20

Tia Juana River near Nestor, Calif................................................ 21

Otay River basin

Jamul Creek (head of Otay River) near Jamul, Calif................................ 21

Otay River at Savage Dam, Calif................................................... 22

Sweetwater River basin

Sweetwater River at Loveland Dam, near Alpine, Calif.............................. 24

Sweetwater River at Sweetwater Dam, Calif......................................... 25

San Diego River basin 

San Diego River: 

Boulder Creek at Cuyamaca Reservoir, near Julian, Calif......................... 26

San Diego River at El Capitan 'Dam, Calif.......................................... 27

San Diego River near Santee, Calif................................................ 28

San Dieguito River basin

Santa Ysabel Creek (head of San Dieguito River) at Sutherland Dam, Calif.......... 29

Santa Ysabel Creek near Ramona, Calif............................................. 30

Santa Ysabel Creek near San Pasqual, Calif........................................ 31

Guejito Creek near San Pasqual, Calif........................................... 32

Guejito Creek at San Pasqual, Calif............................................. 33

Santa Maria Creek near Ramona, Calif............................................ 33

San Dieguito River near San Pasqual, Calif........................................ 34

San Dieguito River at Lake Hodges, Calif.......................................... 34

San Luis gey River basin

San Luis Key River at Lake Henshaw, near Mesa Grande, Calif....................... 35

San Luis Key River below Pala diversion dam, near Pala, Calif..................... 36

San Luis Rey River at Monserate Narrows, near Pala, Calif......................... 37

San Luis Rey River near Bonsall, Calif............................................ 37

San Luis Rey River at Oceanside, Calif............................................ 38

Santa Margarita River basin

Temecula Creek (head of Santa Margarita River) at Vail Dam, Calif................. 38

Murrietta Creek at Temecula, Calif.............................................. 39

Santa Margarita River near Temecula, Calif........................................ 40

Santa Margarita River near Fallbrook, Calif....................................... 41

0 'Neill ditch near Ysidora, Calif............................................... 42

Santa Margarita River at Ysidora, Calif........................................... 42

San Juan Creek basin

San Juan Creek near San Juan Capistrano, Calif.................................... 43

Trabuco Creek near San Juan Capistrano, Calif................................... 45

Aliso Creek basin

Aliso Creek at El Toro, Calif..................................................... 45

Peters Canyon Wash basin 

Peters Canyon Wash:

San Diego Creek near Irvine, Calif.............................................. 46

Santa Ana River basin 

Santa Ana River: 

Bear Creek: 

Big Bear Lake near Big Bear Lake, Calif......................................... 47

Santa Ana River near Mentone, Calif............................................... 48

Mill Creek near Yucaipa, Calif.................................................. 50

Mill Creek near Mentone, Calif.................................................. 52

Plunge Creek near East Highlands, Calif......................................... 53

Santa Ana River near San Bernardino, Calif........................................ 55

San Timoteo Creek:

Little San Gorgonio Creek near Beaumont, Calif................................ 56

San Timoteo Creek near Redlands, Calif.......................................... 56

San Timoteo Creek near Loma Linda, Calif........................................ 57

Warm Creek:

East Twin Creek near Arrowhead Springs, Calif................................. 58

Waterman Canyon Creek near Arrowhead Springs, Calif........................... 59

City Creek near Highland, Calif............................................... 60

Devil Canyon Creek near San Bernardino, Calif................................. 62

Lytle Creek near Fontana, Calif............................................... 63

Cajon Creek near Keenbrook, Calif........................................... 64

Lone Pine Creek near Keenbrook, Calif..................................... 65

Lytle Creek (east channel) at San Bernardino, Calif........................... 66

V
VI CONTENTS

Gaglng-station records--Continued

Santa Ana River basin Continued Page

Warm Creek near Colton, Calif................................................... 67

Santa Ana River at Riverside Narrows, near Arlington, Calif....................... 69

Day Creek near Etiwanda, Calif.................................................. 70

Santa Ana River at Hamner Avenue, near Corona, Calif.............................. 72

Santa Ana River at Auburndale Bridge, near Corona, Calif.......................... 73

Cucamonga Creek near Upland, Calif.............................................. 74

San Jacinto River near San jacinto, Calif....................................... 75

Bautista Creek near Hemet, Calif.............................................. 77

San Jacinto River near Elsinore, Calif.......................................... 77

Elsinore Lake at Elsinore, Calif................................................ 78

Temescal Creek near Corona, Calif............................................... 78

Chino Creek:

San Antonio Creek near Claremont, Calif....................................... 79

Santa Ana River below Prado Dam, Calif............................................ 81

Santa Ana River at county line, below Prado Dam, Calif............................ 82

Santiago Creek at Santiago Dam, near Villa Park, Calif.......................... 83

Santiago Creek near Villa Park, Calif........................................... 84

Santiago Creek at Santa Ana, Calif.............................................. 85

Santa Ana River at Santa Ana, Calif............................................... 86

San Gabriel River basin

East Fork San Qabriel River near Camp Bonita, Calif............................... 87

West Pork San Gabriel River at Camp Rincon, Calif............................... 88

San Gabriel River near Azusa, Calif............................................... 89

Rogers Creek near Azusa, Calif.................................................. 90

Pish Creek near Duarte, Calif................................................... 91

San Gabriel River below Sante Pe Dam, near Baldwin Park, Calif.................... 91

Walnut Creek:

San Dimas Creek near San Dimas, Calif......................................... 92

Dalton Creek near Glendora, Calif............................................. 93

Little Dalton Creek near Glendora, Calif.................................... 94

San Gabriel River above Whittier Narrows Dam, Calif............................... 95

San Jose Creek near Whittier, Calif............................................. 96

San Gabriel River at Pico, Calif.................................................. 97

San Gabriel River at Spring Street, near Los Alamitos, Calif...................... 98

Coyote Creek:

Brea Creek below Brea Dam, near Pullerton, Calif.............................. 98

Brea Creek at Pullerton, Calif................................................ 99

Pullerton Creek below Pullerton Dam, near Brea, Calif....................... 100

Pullerton Creek at Pullerton, Calif......................................... 101

Coyote Creek near Artesia, Calif................................................ 102

Carbon Creek near Yorba Linda, Calif.......................................... 102

as Angeles River basin

Los Angeles River at Sepulveda Dam, Calif......................................... 103

Pacoima Creek near San Fernando, Calif.......................................... 104

Tujunga Creek below Mill Creek, near Colby Ranch, Calif......................... 105

Tujunga Creek near Sunland, Calif............................................... 106

Haines Creek near Tujunga, Calif.............................................. 107

Little Tujunga Creek near San Fernando, Calif................................. 108

Tujunga Creek below Hansen Dam, Calif........................................... 108

Los Angeles River at Los Angeles, Calif........................................... 109

Arroyo Seco near Pasadena, Calif................................................ 110

Los Angeles River near Downey, Calif.............................................. Ill

Rio Hondo:

Sawpit Creek near Monrovia, Calif............................................. 112

Santa Anita Creek near Sierra Madre, Calif.................................... 113

Little Santa Anita Creek near Sierra Madre, Calif........................... 114

Eaton Creek near Pasadena, Calif.............................................. 115

Rio Hondo above Whittier Narrows Dam, Calif..................................... 116

Rio Hondo near Montebello, Calif................................................ 117

Mission Creek near Montebello, Calif.......................................... 118

Mission Creek below Whittier Narrows Dam, Calif............................... 119

Rio Hondo near Downey, Calif.................................................... 120

Los Angeles River at Long Beach, Calif............................................ 121

Ballona Creek basin

Ballona Creek near Culver City, Calif............................................. 122

Topanga Creek basin

Topanga Creek near Topanga Beach, Calif........................................... 123

Malibu Creek basin

Malibu Creek at Crater Camp, near Calabasas, Calif................................ 124

Santa Clara River basin

Santa Clara River at Los Angeles-Ventura County line, Calif....................... 125

Piru Creek above Lake Piru, Calif............................................... 126

Lake Piru near Piru, Calif...................................................... 127

Piru Creek below Santa Felicia Dam, Calif....................................... 128

Piru Creek near Piru, Calif..................................................... 129

Hopper Creek near Piru, Calif................................................... 130

Sespe Creek near Wheeler Springs, Calif......................................... 131

Sespe Creek near Pillmore, Calif................................................ 132

Santa Paula Creek near Santa Paula, Calif....................................... 134

Ventura River basin

Matilija Creek (head of Ventura River) above reservoir, near Matilija Hot Springs,

Calif....................................................................... 135

Matilija Reservoir at Matilija Hot Springs, Calif................................. 136

Matilija Creek at Matilija Hot Springs, Calif..................................... 137

North Fork Matilija Creek at Matilija Hot Springs, Calif........................ 138

Ventura River:

San Antonio Creek at Casitas Springs, Calif..................................... 139

Coyote Creek near Ventura, Calif................................................ 140

Ventura River near Ventura, Calif................................................. 141

Los 

Los
CONTENTS VII

Gaging-station records Continued

Carplnterla Creek basin Page

Carpinteria Creek near Carpintefia, Calif......................................... 143

Atascadero Creek basin

Atascadero Creek near Goleta, Calif............................................... 144

San Jose Creek basin

San Jose Creek near Goleta, Calif................................................. 145

Santa Ynez River basin

Santa Ynez River at Jameson Lake, near Monteolto, Calif........................... 146

Santa Ynez River above Gibraltar Dam, near Santa Barbara, Calif................... 147

Santa Ynez River below Gibraltar Dam, near Santa Barbara, Calif................... 148

Santa Ynez River below Los Laureles Canyon, near Santa Ynez, Calif................ 149

Santa Cruz Creek near Santa Ynez, Calif........<................................ 150

Cachuma Creek near Santa Ynez, Calif............................................ 151

Cachuma Reservoir near Santa Ynez, Calif.......................................... 152

Santa Ynez River near Santa Ynez, Calif........................................... 153

Santa Agueda Creek near Santa Ynez, Calif....................................... 154

Zanja Cota near Santa Ynez, Calif............................................... 155

Santa Ynez River at Grand Avenue, near Santa Ynez, Calif.......................... 156

Santa Ynez River at Solvang, Calif................................................ 157

Santa Ynez River at Buellton, Calif............................................... 158

La Zaca Creek at Buellton, Calif................................................ 159

Santa Ynez River near Buellton, Calif............................................. 160

Santa Ynez River at Santa Rosa Dam site, near Buellton, Calif..................... 161

Santa Ynez River at Cooper's Reef, near Lompoc, Calif............................. 162

Santa Ynez River below Santa Rita Creek, near Lompoc, Calif....................... 163

Salispuedes Creek near Lompoc, Calif............................................ 164

Santa Ynez River at narrows, near Lompoc, Calif................................... 165

Santa Ynez River near Lompoc, Calif............................................... 166

Santa Ynez River at H Street, near Lompoc, Calif.................................. 167

Santa Ynez River at 13th Street, near Lompoc, Calif............................... 168

Santa Ynez River at barrier, near Surf, Calif..................................... 169

San Antonio Creek basin

San Antonio Creek near Casmalia, Calif............................................ 170

Santa Maria River basin

Cuyama River (head of Santa Maria River) near Ventucopa, Calif.................... 171

Cuyama River near Santa Maria, Calif.............................................. 172

Alamo Creek near Santa Maria, Calif............................................. 173

Huasna River near Santa Maria, Calif............................................ 174

Sisquoc River near Sisquoc, Calif............................................... 175

La Brea Creek near Sisquoc, Calif............................................. 176

Tepusquet Creek near Sisquoc, Calif........................................... 177

Sisquoc River near Garey, Calif................................................. 178

Santa Maria River at Guadalupe, Calif............................................. 178

Arroyo Grande basin

Arroyo Grande at Arroyo Grande, Calif............................................. 179

Arroyo de la Cruz basin

Arroyo de la Cruz near San Simeon, Calif.......................................... 180

Sur River basin

Sur River at Big Sur, Calif....................................................... 181

Salinas River basin

Salinas River near Pozo, Calif.................................................... 182

Toro Creek near Pozo, Calif..................................................... 183

Salinas Reservoir near Pozo, Calif................................................ 184

Salinas River above Pilitas Creek, near Santa Margarita, Calif.................... 185

Jack Creek near Templeton, Calif................................................ 186

Salinas River at Paso Robles, Calif............................................... 187

Estrella Creek near Estrella, Calif............................................. 188

Nacimiento River near Bryson, Calif............................................. 189

Nacimiento River near San Miguel, Calif......................................... 190

San Antonio River at Pleyto, Calif.............................................. 191

Salinas River near Bradley, Calif................................................. 192

Arroyo Seco near Soledad, Calif................................................. 193

Salinas River near Spreckels, Calif............................................... 194

Pa.jaro River basin

Pajaro River: 

Pacheco Creek near Dunneville, Calif............................................ 195

Llagas Creek near Morgan Hill, Calif............................................ 196

Camadero Creek: 

Uvas Creek near Morgan Hill, Calif............................................ 197

San Benito River near Willow Creek School, Calif................................ 198

Tres Pinos Creek near Tres Pinos, Calif....................................... 199

San Benito River near Hollister, Calif.......................................... 200

Pajaro River at Chittenden, Calif................................................. 201

Soquel Creek basin

Soquel Creek at Sequel, Calif..................................................... 202

San Lorenzo River basin

San Lorenzo River at Big Trees, Calif............................................. 203

San Lorenzo River at Santa Cruz, Calif............................................ 204

Branciforte Creek at Santa Cruz, Calif.......................................... 205

Pescadero Creek basin

Pescadero Creek near Pescadero, Calif............................................. 206

San Pranclsqulto Creek basin

San Prancisquito Creek at Stanford University, Calif.............................. 207

Matadero Creek basin

Matadero Creek at Palo Alto, Calif................................................ 208

Stevens Creek basin

Stevens Creek near Cupertino, Calif............................................... 209

Guadalupe River basin

Alamitos Creek (head of Guadalupe River) near Edenvale, Calif..................... 210

Guadalupe Creek at Guadalupe, Calif............................................. 211
VIII CONTENTS

Gaging-station records Continued 

Guadalupe River basin Continued

Guadalupe River: Page 

Los Gatos Creek at Los Gatos, Calif............................................. 212

Guadalupe River at San Jose, Calif................................................ 213

Saratoga Creek at Saratoga, Calif............................................... 214

Coyote Creek basin

Coyote Creek near Madrone, Calif.................................................. 215

Coyote Creek near Edenvale, Calif................................................. 216

Alameda Creek basin

Alameda Creek near Niles, Calif................................................... 217

San Lorenzo Creek basin

San Lorenzo Creek at Hayward, Calif............................................... 218

Pacheco Creek basin

Walnut Creek (head of Pacheco Creek):

San Ratnon Creek at San Ramon, Calif............................................. 219

San Ramon Creek at Walnut Creek, Calif.......................................... 220

Walnut Creek at Walnut Creek, Calif............................................... 221

Pine Creek:

Galindo Creek at Concord, Calif............................................... 222

Pine Creek at Concord, Calif.................................................... 223

Grayson Creek near Hookston, Calif.............................................. 224

Grayson Creek near Pacheco , Calif............................................... 225

Kern River basin

Kern River near Kernville, Calif.................................................. 226

Kern River at Kernville, Calif.................................................... 227

Borel Canal below Isabella Dam, Calif........................................... 228

South Fork Kern River near Onyx, Calif.......................................... 229 \

Isabella Reservoir near Isabella, Calif........................................... 230

Kern River below Isabella Dam, Calif.............................................. 231

Kern River near Democrat Springs, Calif........................................... 232

Kern River below Kern Canyon powerhouse, Calif.................................... 233

Tulare Lake basin

Tulare Lake in Kings County, Calif................................................ 234

Middle Fork Tule River:

North Fork of Middle Fork Tule River near Springville, Calif.................. 235

Tule River near Portervllle, Calif.............................................. 236

South Fork Tule River near Success , Calif..................................... 238

Tule River at Worth Bridge, near Porterville, Calif............................. 239

Middle Fork Kaweah River:

Marble Fork Kaweah River at Potwisha Camp, Calif.............................. 240

North Fork Kaweah River at Kaweah, Calif...................................... 241

Kaweah River near Three Rivers, Calif........................................... 242

South Fork Kings River near Cedar Grove, Calif.................................. 243

Kings River near Hume , Calif.................................................... 244

Kings River above North Fork, Calif............................................. 245

North Fork Kings River:

Helms Creek at Sand Meadows, Calif.......................................... 246

North Fork Kings River near Cliff Camp, Calif................................. 247

Kings River below North Fork, Calif............................................. 248

Big Creek above Pine Flat Reservoir, Calif.................................... 249

Sycamore Creek above Pine Flat Reservoir, Calif............................... 250

Pine Flat Reservoir near Piedra, Calif.......................................... 251

Kings River below Pine Flat Dam, Calif.......................................... 252

Kings River at Piedra, Calif.................................................... 253

Los Gatos Creek above Nunez Canyon, near Coalinga, Calif........................ 254

San Joaquln River basin 

Middle Fork San Joaquin River:

North Fork San Joaquin River below Iron Creek, Calif............................ 255

San Joaquin River at Miller Crossing, Calif....................................... 256

Granite Creek near Cattle Mountain, Calif....................................... 257

South Fork San Joaquin River:

Florence Lake near Big Creek, Calif............................................. 258

Ward tunnel at intake, Calif.................................................. 259

South Fork San Joaquin River near Florence Lake, Calif.......................... 260

Bear Creek near Lake Thomas A. Edison, Calif.................................. 261

Lake Thomas A. Edison near Big Creek, Calif................................... 262

Mono Creek below Lake Thomas A. Edison, Calif................................. 264

Jackass Creek near Jackass Meadow, Calif........................................ 265

Chiquito Creek near Arnold Meadow, Calif........................................ 266

San Joaquin River above Big Creek, Calif.......................................... 267

Big Creek: 

Ward tunnel at outlet, Calif.................................................. 268

Huntington Lake near Big Creek, Calif........................................... 269

Big Creek below Huntington Lake, Calif.......................................... 270

Pitman Creek below Tamarack Creek, Calif...................................... 271

Stevenson Creek:

Huntington-Shaver conduit at outlet, Calif.................................... 272

Shaver Lake near Big Creek, Calif............................................... 273

San Joaquin River above Willow Creek, near Auberry, Calif......................... 274

North Fork Willow Creek: 

Bass Lake:

Pacific Gas & Electric Co. conduit No. 3 near Bass Lake, Calif................ 275

North Fork Willow Creek near Bass Lake, Calif................................... 276

Willow Creek at mouth, near Auberry, Calif...................................... 277

San Joaquin River below Kerckhoff powerhouse, Calif............................... 278

Fine Gold Creek near Friant, Calif.............................................. 279

Millerton Lake at Friant, Calif................................................... 280

Friant-Madera Canal near Friant, Calif.......................................... 281

Friant-Kern Canal at Friant, Calif.............................................. 282

San Joaquin River below Friant, Calif............................................. 283

Little Dry Creek near Friant, Calif............................................. 284
CONTENTS IX

Gaging-station records--Continued

San Joaquln River basln--Continued Page

San Joaquln River near Biola, Calif............................................... 285

Fresno River near Knowles , Calif................................................ 286

Fresno River near Daulton, Calif................................................ 287

Chowchllla River at Buchanan dam site, Calif.................................... 288

Salt Slough near Los Banos, Calif............................................... 289

San Joaquln River at Premont Ford Bridge, Calif................................... 290

Merced River at Happy Isles Bridge, near Yosemite, Calif........................ 291

Tenaya Creek near Yosemite, Calif............................................. 292

Merced River at Pohono Bridge, near Yosemite, Calif............................. 294

South Fork Merced River near El Portal, Calif................................. 295

Merced River at Bagby, Calif.................................................... 296

Lake McClure at Exchequer, Calif................................................ 298

Merced River at Exchequer, Calif................................................ 299

Merced River near Stevinson, Calif.............................................. 300

Merced River Slough near Neman, Calif........................................ 301

San Joaquin River near Neman, Calif.............................................. 302

Orestimba Creek near Neman, Calif.............................................. 303

Tuolumne River:

Falls Creek near Hetch Hetchy, Calif.......................................... 304

Hetch Hetchy Reservoir at Hetch Hetchy, Calif................................... 305

Tuolumne River near Hetch Hetchy, Calif......................................... 306

Cherry Creek near Hetch Hetchy, Calif......................................... 307

Eleanor Creek:

Lake Eleanor near Hetch Hetchy, 'Calif....................................... 308

Eleanor Creek near Hetch Hetchy, Calif...................................... 309

South Fork Tuolumne River near Oakland Recreation Camp, Calif................. 310

Middle Tuolumne River at Oakland Recreation Camp, Calif..................... 312

Woods Creek near Jacksonville, Calif.......................................... 313

Don Pedro Reservoir near La Grange, Calif....................................... 314

Tuolumne River above La Grange Dam, near La Grange, Calif....................... 315

Modesto Canal near La Grange, Calif........................................... 316

Turlock Canal near La Grange, Calif........................................... 317

Tuolumne River at Modesto, Calif................................................ 320

Middle Fork Stanislaus River at Kennedy Meadows , Calif.......................... 321

Clark Fork Stanislaus River near Dardanelle, Calif............................ 322

Middle Fork Stanislaus River at Hells Half Acre Bridge, Calif................... 323

Middle Fork Stanislaus River at Sand Bar Flat, near Avery, Calif................ 324

North Fork Stanislaus River below Silver Creek, Calif......................... 325

Highland Creek below Spicer Meadows Reservoir, Calif........................ 326

North Fork Stanislaus River near Avery, Calif................................. 327

South Fork Stanislaus River at Strawberry, Calif.............................. 328

Philadelphia Canal near Strawberry, Calif................................... 329

Tuolumne Canal near Long Barn, Calif........................................ 330

South Fork Stanislaus River near Long Bam, Calif............................. 331

Stanislaus River:

Melones Reservoir at Melones Dam, Calif......................................... 332

Stanislaus River below Melones powerhouse, Calif. ............................... 333

South San Joaquin Canal near Knights Ferry, Calif............................. 334

Oakdale Canal near Knights Ferry, Calif....................................... 335

Stanislaus River at Ripon, Calif................................................ 336

San Joaquin River near Vemalis , Calif............................................ 337

South Fork Calaveras River:

San Domingo Creek near San Andreas, Calif..................................... 338

San Antonio Creek near San Andreas, Calif..................................... 339

South Fork Calaveras River near San Andreas, Calif.............................. 340

Calaveritas Creek near San Andreas, Calif..................................... 341

North Fork Calaveras River:

Esperanza Creek near Mokelumne Hill, Calif.................................. 342

Jesus Maria Creek near Mokelumne Hill, Calif................................ 343

North Fork Calaveras River neap San Andreas, Calif............................ 344

Murray Creek near San Andreas, Calif........................................ 345

Calaveras River:

Cosgrove Creek near Valley Springs, Calif..................................... 346

Calaveras River at Jenny Lind, Calif............................................ 347

Bear Creek near Lockeford, Calif................................................ 348

Delta-Mendota Canal near Tracy, Calif........................................... 349

North Fork Mokelumne River:

Salt Springs Reservoir near West Point, Calif................................... 350

Tiger Creek powerhouse conduit below Salt Springs Dam, Calif.................. 351

North Fork Mokelumne River below Salt Springs Dam, Calif........................ 352

Cold Creek near Mokelumne Peak, Calif......................................... 353

Bear River near Salt Springs Dam, Calif....................................... 354

Middle Fork Mokelumne River at West Point, Calif.............................. 355

South Fork Mokelumne River near West Point, Calif........................... 356

Mokelumne River near Mokelumne Hill, Calif...................................... 357

Mokelumne River at Lancha Plana, Calif.......................................... 359

Mokelumne River near Clements, Calif............................................ 360

Woodbridge Canal at Woodbridge, Calif......................................... 362

Mokelumne River at Woodbridge, Calif............................................ 363

Dry Creek near Gait, Calif.................................................... 364

North Fork Cosumnes River:

Camp Creek near Camino, Calif............................................... 365

Camp Creek near Somerset, Calif............................................. 366

North Fork Cosumnes River near El Dorado, Calif............................... 367

Cosumnes River near Plymouth, Calif........................................... 368

Cosumnes River at Michigan Bar, Calif......................................... 369

Cosumnes River at McConnell, Calif............................................ 370

Contra Costa Canal near Oakely, Calif........................................... 371

Dutch slough:

Marsh Creek near Byron, Calif................................................. 372
X CONTENTS

Gaging-station records Continued

Goose Lake (closed basin) Page

Drew Creek near Lakeview, Oreg.................................................. 373

Cottonwood Creek near Lakeview, Oreg............................................ 374

Sacramento River basin

Sacramento River at Delta, Calif.................................................. 375

Pit River:

South Pork Pit River near Likely, Calif....................................... 376

Pit River near Canby, Calif..................................................... 377

Pit River near Bieber, Calif.................................................... 379

Hat Creek near Hat Creek, Calif............................................... 380

Pit River below Pit No. 4 Dam, Calif............................................ 381

Pit River at Big Bend, Calif.................... ................................ 382

Pit River near Montgomery Creek, Calif.......................................... 383

Squaw Creek above Shasta Lake, Calif.......................................... 384

McCloud River below Big Springs, near McCloud, Calif.......................... 385

Angel Creek near McCloud, Calif............................................. 386

McCloud River near McCloud, Calif............................................. 387

MeCloud River above Panther Creek, near McCloud, Calif........................ 388

McCloud River above Shasta Lake, Calif........................................ 389

Shasta Lake near Redding, Calif................................................... 390

Sacramento River at Keswick, Calif................................................ 391

Clear Creek at French Gulch, Calif.............................................. 392

Clear Creek near Igo, Calif..................................................... 393

Cow Creek near Millville, Calif................................................. 394

Cottonwood Creek near Cottonwood, Calif......................................... 395

Battle Creek near Cottonwood, Calif............................................. 396

Paynes Creek near Red Bluff, Calif.............................................. 397

Sacramento River near Red Bluff, Calif............................................ 398

Antelope Creek near Red Bluff, Calif............................................ 399

Mill Creek near Los Molinos, Calif.............................................. 400

Elder Creek near Paskenta, Calif................................................ 401

Elder Creek at Gerber, Calif.................................................... 402

Thomes Creek at Paskenta, Calif................................................. 403

Deer Creek near Vina, Calif..................................................... 404

Big Chico Creek near Chieo, Calif............................................... 405

Stony Creek at Black Butte dam site, near Orland, Calif......................... 406

Stony Creek near Hamilton City, Calif........................................... 407

Sacramento River at Butte City, Calif............................................. 408

Sacramento River at Colusa, Calif................................................. 409

Butte Creek near Chico, Calif................................................... 410

Sacramento River below Wilkins Slough, Calif...................................... 411

Sacramento River at Knights Landing, Calif........................................ 412

Middle Pork Feather River:

Big Grizzly Creek near Portola, Calif......................................... 413

Middle Pork Feather River near Clio, Calif...................................... 414

Middle Fork Feather River below Sloat, Calif.................................... 416

Middle Fork Feather River near Merrimac, Calif.................................. 417

South Fork Feather River:

Lost Creek near Clipper Mills, Calif........................................ 418

Palermo Canal at Enterprise, Calif.......................................... 419

South Fork Feather River at Enterprise, Calif................................. 420

Feather River at Bidwell Bar, Calif............................................. 421

North Fork Feather River:

Lake Almanor near Prattville, Calif.......................................... 422

North Fork Feather River near Prattville, Calif............................... 423

Butt Creek above Almanor-Butt Creek tunnel, near Prattville, Calif.......... 424

Butt Creek below Almanor-Butt Creek tunnel, near Prattville, Calif.......... 425

Indian Creek (head of East Branch of North Fork Feather River) near

Crescent Mills, Calif................................................. 426

Spanish Creek above Blackhawk Creek, at Keddie, Calif..................... 428

East Branch of North Fork Feather River near Rich Bar, Calif................ 429

Bucks Creek:

Bucks Lake near Bucks Lodge, Calif.......................................... 430

North Fork Feather River at Big Bar, Calif.................................... 431

West Branch Feather River near Yankee Hill, Calif........................... 432

Feather River near Oroville, Calif.............................................. 433

Honcut Creek:

South Honcut Creek near Bangor, Calif....................................... 434

Middle Yuba River (head of Yuba River):

Milton-Bowman tunnel at outlet, Calif....................................... 435

Middle Yuba River at Milton, Calif............................................ 436

Middle Yuba River above Oregon Creek, Calif................................... 437

Oregon Creek near North San Juan, Calif..................................... 438

North Yuba River below Goodyears Bar, Calif................................. 439

North Yuba River below Bullards Bar Dam, Calif.............................. 440

South Yuba River near Cisco, Calif.......................................... 441

Canyon Creek:

Bowman Lake near Graniteville, Calif...................................... 442

Bowman-Spalfling Canal at intake, Calif.................................. 443

Canyon Creek below Bowman Lake , Calif..................................... 444

Yuba River at Englebright Dam, Calif.......................................... 445

Deer Creek near Smartville, Calif........................................... 446

Dry Creek near Brownsville, Calif........................................... 447

Dry Creek at Virginia Ranch, Calif.......................................... 448

Yuba River at Marysville, Calif............................................... 449

Bear River near Auburn, Calif................................................. 450

Bear River near Wheatland, Calif.............................................. 451

Dry Creek near Wheatland, Calif........................................'..... 452

Feather River at Nicolaus, Calif................................................ 453

Sacramento River at Verona, Calif................................................. 454

Sacramento weir near Sacramento, Calif.......................................... 455
CONTENTS XI

Gaging-station records Continued

Sacramento River basin Continued Page 

North Pork American River at North Pork Dam, Calif.............................. 456

Middle Pork American River at French Meadows, Calif........................... 457

Rubicon River near Georgetown, Calif........................................ 458

Pilot Creek: 

Georgetown Divide ditch above Pilot Creek, near Georgetown, Calif....... 459

Georgetown Divide ditch near Georgetown, Calif.......................... 460

Pilot Creek near Georgetown, Calif........................................ 461

Middle Pork American River near Auburn, Calif................................. 462

South Pork American River: 

Echo Lake conduit near Phillips , Calif...................................... 463

Pyramid Creek near Phillips, Calif.......................................... 464

Silver Lake Outlet (head of Silver Fork of South Pork American River) near

Kirkwood, Calif....................................................... 465

Twin Lakes Outlet near Kirkwood, Calif.................................... 466

El Dorado Canal near Kyburz, Calif.......................................... 467

South Fork American River near Kyburz, Calif.................................. 468

Alder Creek near White Hall, Calif ........................................... 470

Silver Creek at Union Valley, Calif......................................... 472

South Pork Silver Creek near Ice House, Calif............................. 473

Silver Creek near Placerville, Calif........................................ 474

American River flume near Camino, Calif..................................... 475

South Fork American River near Camino, Calif.................................. 476

South Fork American River near Lotus, Calif. .................................. 477

Weber Creek near Salmon Palls, Calif.......................................... 478

Folsom Reservoir near Polsom, Calif............................................. 479

American River at Fair Oaks, Calif.............................................. 480

American River at Sacramento, Calif............................................. 481

Sacramento River at Sacramento, Calif............................................. 482

Yolo bypass:

Clear Lake (head of Cache Creek): 

Adobe Creek near Kelseyville, Calif......................................... 483

Highland Creek near Kelseyville, Calif.................................... 485

Kelsey Creek near Kelseyville, Calif........................................ 487

Clear Lake at Lakeport, Calif................................................. 488

Cache Creek near Lower Lake, Calif............................................ 489

North Pork Cache Creek near Lower Lake, Calif............................... 490

Cache Creek near Capay, Calif................................................. 491

Cache Creek at Yolo, Calif.................................................... 492

Yolo bypass near Woodland, Calif................................................ 493

Putah Creek near Guenoc , Calif................................................ 494

Putah Creek near Winters, Calif............................................... 495

Putah Creek near Davis, Calif................................................. 496

Seepage investigations in Sacramento River basin, Calif:

Clear Creek seepage investigation, Calif...................................... 497

Cottonwood Creek seepage investigation, Calif................................. 498

Red Bank Creek seepage investigation, Calif................................... 499

Antelope Creek seepage investigation, Calif................................... 500

Mill Creek seepage investigation, Calif....................................... 500

Elder Creek seepage investigation, Calif...................................... 501

Thomes Creek seepage investigation, Calif..................................... 502

Deer Creek seepage investigation, Calif....................................... 503

Pine Creek seepage investigation, Calif....................................... 503

Big Chico Creek seepage investigation, Calif.................................. 504

Lindo Channel of Big Chico Creek seepage investigation, Calif................. 504

Cache Creek seepage investigation, Calif...................................... 505

Napa River basin

Napa River near St. Helena, Calif................................................. 506

Conn Creek near St. Helena, Calif............................................... 507

Dry Creek near Napa, Calif...................................................... 508

Sonoma Creek basin

Sonoma Creek at Boyes Hot Springs, Calif........................................ 509

Petaluma Creek basin

Petaluma Creek near Petaluma, Calif............................................... 510

Novato Creek basin

Novato Creek near Novato, Calif................................................... 511

Corte Madera Creek basin

Corte Madera Creek at Ross, Calif................................................. 512

Lagunitas Creek basin 

Lagunitas Creek:

Arroyo Nicasio near Point Reyes Station, Calif.................................. 513

Russian River basin

Russian River near Ukiah, Calif................................................... 514

East Fork Russian River near Calpella, Calif.................................... 515

East Pork Russian River near Ukiah, Calif....................................... 516

Russian River near Hopland, Calif................................................. 517

Russian River near Cloverdale, Calif.............................................. 518

Russian River near Healdsburg, Calif.............................................. 519

Dry Creek near Cloverdale, Calif................................................ 520

Russian River at Guerneville, Calif............................................... 521

Gualala River basin

South Fork Gualala River near Annapolis, Calif.................................... 522

Navarro River basin

Navarro River near Navarro, Calif................................................. 523

f

oyo River basin 

oyo River near Fort Bragg, Calif................................................. 524

Mattole River basin

Mattole River near Petrolia, Calif................................................ 525

North Fork Mattole River at Petrolia, Calif..................................... 526

Eel River basin 

Eel River:

Lake Pillsbury near Potter Valley, Calif........................................ 527
Gaging-station records Continued

Eel River basin Continued Page 

Eel River below Scott Dam, near Potter Valley, Calif.............................. 528

Potter Valley powerhouse tailrace near Potter Valley, Calif..................... 529

Eel River at Van Arsdale Dam, near Potter Valley, Calif........................... 530

Eel River above Dos Rios, Calif................................................... 531

Middle Pork Eel River below Black Butte River, near Covelo, Calif............... 532

Eel River below Dos Rios, Calif................................................... 533

North Pork Eel River near Mina, Calif........................................... 535

Eel River at Aider-point, Calif. ................................................... 536

South Pork Eel River near Branscomb, Calif...................................... 537

South Pork Eel River near Miranda, Calif........................................ 539

Eel River at Scotia, Calif........................................................ 540

Van Duzen River near Dinsmores, Calif........................................... 541

Van Duzen River near Bridgeville, Calif......................................... 542

Yager Creek near Carlotta, Calif.............................................. 543

Jacoby Creek basin

Jacoby Creek near Freshwater, Calif............................................... 544

Mad River basin

Mad River near Forest Glen, Calif................................................. 545

Mad River near Arcata, Calif...................................................... 546

Little River basin

Little River at Crannell, Calif................................................... 547

Redwood Creek basin

Redwood Creek near Blue Lake, Calif............................................... 548

Redwood Creek at Orick, Calif..................................................... 549

Lost River basin (closed basin adjacent to Klamath River basin) 

Lost River:

Lost River diversion canal near Olene, Oreg..................................... 550

Lower Klamath Lake basin (closed basin adjacent to Klamath River basin)

Antelope Creek near Tennant, Calif.............................................. 551

Butte Creek near Macdoel, Calif................................................. 552

Klamath River basin

Williamson River (head of Klamath River) near Klamath Agency, Oreg................ 553

Sprague River near Beatty, Oreg................................................. 554

Sprague River near Chiloquin, Oreg.............................................. 555

Williamson River below Sprague River, near Chiloquin. Oreg........................ 556

Upper Klamath Lake (continuation of Williamson River):

Fourmile Creek:

Cascade Canal near Pish Lake, Oreg............................................. 557

"A" Canal at Klamath Palls, Oreg................................................ 558

Upper Klamath Lake near Klamath Falls, Oreg....................................... 559

Link River (continuation of Upper Klamath Lake) at Klamath Falls, Oreg............ 560

Diversion from Klamath River to Lost River near Olene, Oreg..................... 561

Klamath River at Keno, Oreg....................................................... 562

Pall Creek at Copco, Calif...................................................... 563

Klamath River below Fall Creek, near Copco, Calif................................. 564

Jenny Creek: 

Keene Creek at Hyatt Prairie, near Ashland, Oreg.............................. 565

Shasta River near Yreka, Calif.................................................. 566

Scott River near Port Jones, Calif.............................................. 567

Klamath River near Seiad Valley, Calif............................................ 568

Salmon River at Somesbar, Calif................................................. 569

Klamath River at Somesbar, Calif.................................................. 570

Trinity River at Lewiston, Calif................................................ 571

South Pork Trinity River:

Hayfork Creek near Hyampom, Calif........................................... 572

South Pork Trinity River near Salyer, Calif................................... 573

Trinity River near Hoopa, Calif................................................. 574

Klamath River near Klamath, Calif................................................. 575

Smaller reservoirs in Klamath River basin, Oreg.................................... 578

Smith River basin 

Middle Pork Smith River:

South Fork Smith River near Crescent City, Calif................................ 579

Smith River near Crescent City, Calif. ............................................ 580

Revisions of records for discontinued stations:

New River near Denny, Calif....................................................... 581

Discharge measurements at points other than gaging stations......................... 582

Index............................................................................... 591

ILLUSTRATIONS

Page 

Figure 1. Gaging-station structures: A, Fish Creek near Duarte, Calif.; B, Eel

River below Bos Rios , Cali?............................................. 4

2. Map of the United States showing areas covered by the 18 annual volumes on

surface-water supply................................... 9

3. Comparison of discharge at three key gaging stations during 1956 water

year with median discharge for 25-year period........................... 15
SURFACE WATER SUPPLY OP PACIFIC SLOPE BASINS IN CALIFORNIA, 1956

SCOPE OP WORK

This volume is one of a series of 18 reports presenting measurements of stage, discharge, and content of streams, lakes, and reservoirs in the United States during the 

water year ending September 30, 1956. Since 1888, when the United States Geological 

Survey first studied streamflow in relation to problems of irrigation, similar measurements have been made at more than 13,500 gaging stations in the 48 States and at many 

others in the Territories of Alaska and Hawaii. On September 30, 1956, the Geological 

Survey and cooperating organizations were maintaining 6,910 gaging stations, including 

those in Alaska and Hawaii. Discharge measurements only were made at many other points in 

the 1956 water year. The name of each stream measured at points other than gaging stations is not listed in the index to this report. Only the major river basins in which 

measurements were made are listed under the item "Discharge measurements" in the index.

COOPERATION

In California the work was done under cooperative agreements with the State Department 

of Water Resources, H. 0. Banks, director; Contra Costa County; Orange County Flood Control District; Sacramento Municipal Utility District; San Bernadino Valley Water Conservation District; San Luis Obispo County Flood Control and Water Conservation District; cities 

of Arcata, San Diego, and Santa Barbara; and Santa Barbara County Water Agency. In Oregon 

the work was done under cooperative agreement with the State of Oregon, L. A. Stanley, 

State engineer.

Assistance in the form of funds or services was given by the Corps of Engineers, 

Department of the Army, in collecting records published herein for 50 gaging stations, by 

the Bureau of Reclamation of the United States Department of the Interior for 44 gaging 

stations, and by the Bureau of Indian Affairs, United States Department of the Interior 

for one gaging station. The entire expense of the investigation of streamflow in the 

Tuolumne River basin made for the Hetch Hetchy project and of the flow of Alameda Creek 

near Niles was borne by the city and county of San Francisco.

The following organizations aided in collecting records: In California., The California 

Oregon Power Co.; Southern California Edison Co.; California Water and Telephone Co.; 

Pacific Gas & Electric Co.; Kings River Water Association; Ventura County; Montecito 

County Water District; Helix Madera, Merced, Modesto, Nevada, Oakdale, Oroville-Wyandotte, 

Serrano and Carpenter, South San Joaquin, Turlock, Vista, and Woodbridge Irrigation Districts; East Bay Municipal Utility District; The Irvine Ranch; Pauba Ranch; United Water 

Conservation District; and Francis N. Dlouhy; in Oregon, The California Oregon Power Co.

DIVISION OF WORK

The stream gaging work was done by the Water Resources Division of the Geological 

Survey under the direction of personnel shown in the preface. The data for stations in 

the several States were collected and prepared for publication in the district offices 

listed on the following page. .
2 SURFACE WATER SUPPLY, 1956, PART 11

State District office Address

California a/............. Menlo Park..................... 4 Homewood Place.

Oregon b/................. Portland....................... 1001 NE. Lloyd Boulevard.

a/ Except for Pall Creek and Klamath River near Copco.

b/ Including Pall Creek and Klamath River near Copco, Calif.

Information of a more detailed nature than that published for most of the gaging stations given in this report is on file in the district offices listed above. Provisional 

records of discharge prior to publication, and other unpublished data concerning the 

gaging-station records may usually be obtained from the district office.

DEFINITION OF TERMS AND ABBREVIATIONS

The terms of streamflow and other hydrologic data, as used in this report, are defined 

as follows:

Cubic foot per second (cfs) is the rate of discharge of a stream whose channel is 

I square foot in cross-sectional area and whose average velocity is 1 foot per second.

Cubic feet per second per square mile (cfsm) is the average number of cubic feet of 

water flowing per second from each square mile of area drained, assuming that the runoff 

is distributed uniformly in time and area.

Runoff in inches is the depth to which an area would be covered if all the water draining from it in a given period were uniformly distributed on its surface. The term is used 

for comparing runoff with rainfall, which is also usually expressed in inches.

Acre-foot is the quantity of water required to cover an acre to the depth of 1 foot and 

is equivalent to 43,560 cubic feet. The term is commonly used in relation to storage for 

irrigation.

Cfs-day is the volume of water represented by a flow of 1 cubic foot per second for 

24 hours. It is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons, 

and represents a runoff of 0.0372 inch from 1 square mile.

Stage-discharge relation is the relation between gage height and the amount of water 

flowing in a channel, expressed as volume per unit of time.

Control designates a feature downstream from the gage that determines the stagedischarge relation at the gage. This feature may be a natural constriction of the channel, 

a long reach of the channel, or an artificial structure.

Contents is the volume of water in a reservoir. Unless otherwise indicated, volume is 

computed on the basis of a level pool and does not include bank storage.

The drainage area of a stream at a specified location is that area, measured in a horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from 

precipitation normally would drain by gravity into the river above the specified point. 

Figures of drainage area given herein include all closed basins, or noncontributing areas, 

within the area unless otherwise noted.

WSP is used as an abbreviation for "Water-Supply Paper" in references to previously 

published reports.

DOWNSTREAM ORDER OF LISTING GAGING STATIONS

Beginning with the series of reports for the water year ending September 30, 1951, the 

order of listing gaging-station records was changed. In this report, in a downstream 

direction along the main stem all stations on a tributary entering above a main-stem station are listed before that station. If a tributary enters between two main-stem stations,
EXPLANATION OF DATA 3

it is listed between them. A similar order is followed in listing stations on first rank, 

second rank, and other ranks of tributaries. To indicate the rank of any tributary on 

which a gaging station is situated and the stream to which it is immediately tributary, 

each indention in the listing of gaging stations in the table of contents of this report 

represents one rank. This downstream order and system of indention show which gaging 

stations are on tributaries between any two stations on a main stem and the rank of the 

tributary on which each gaging station is situated.

The order of listing used before the publication of the 1951 report listed first all 

stations on the main stem from headwaters toward mouth, then all stations on the uppermost 

tributary to the main stem from the tributary's source to mouth, and then all stations 

from source to mouth of the uppermost tributary to the tributary.

EXPLANATION OF DATA

The base data collected at gaging stations consist of records of stage and measurements 

of discharge. In addition, observations of factors affecting the stage-discharge relation, 

weather records, and other information are used to supplement base data in determining the 

dally flow. The records of stage are obtained either from direct readings on a nonrecordIng gage or from a water-stage recorder that gives a continuous record of fluctuations. 

Measurements of discharge are made with a current meter by the general methods adopted by 

the Geological Survey on the basis of experience in stream gaging since 1888. These 

methods are described in Water-Supply Paper 888 and are also outlined in standard textbooks on the measurement of stream discharge. Typical structures in use at gaging stations 

are shown In figure 1.

Rating tables giving the discharge for any stage are prepared from stage-discharge relation curves defined by discharge measurements. If extensions to the rating curves are 

necessary to define the extremes of discharge, they are made on the basis of indirect 

determinations of peak discharge (such as slope-area or contracted-opening determinations, 

computation of flow over dams or weirs, and by other methods), velocity-area studies, and 

logarithmic plotting. The application of the dally mean gage height to those rating 

tables gives the dally mean discharge, from which the monthly and the yearly mean discharge 

are computed. If the stage-discharge relation is subject to change because of frequent or 

continual change in the physical features that form the control, the dally mean discharge 

is determined by the shifting-control method, in which correction factors based on individual discharge measurements and notes by engineers and observers are used in applying 

the gage heights to the rating tables. If the stage-discharge relation for a station is 

temporarily changed by the presence of aquatic growth or debris on the control, the daily 

mean discharge is computed by what is essentially the shifting-control method.

At some gaging stations the stage-discharge relation is affected by backwater from 

reservoirs, tributary streams, or other sources. This necessitates the use of the slope 

method in which the slope or fall in a reach of the stream is a factor in determining discharge. Information requisite for determining the slope or fall is obtained by means of 

an auxiliary gage set at some distance from the base gage. At some stations the stagedischarge relation is affected by changing stage. If so, the rate of change in stage is 

used as a factor in the determination of discharge.

At most gaging stations in the northern part of the United States and at some in the 

mountainous regions of other parts the stage-discharge relation is affected by ice during
SURFACE WATER SUPPLY, 1956, PART 11

A. FISH CREEK NEAR DUARTE. CALIF.

B. EEL RIVER BELOW DOS RIOS, CALIF.

FIGURE 1. GAGING-STATION STRUCTURES
EXPLANATION OP DATA 5

the winter, and it becomes impossible to compute the discharge in the usual manner. Discharge for periods of ice effect is computed on the basis of the gage-height record and 

occasional winter discharge measurements, consideration being given to the available information on temperature and precipitation, notes by gage observers and engineers, and comparable records of discharge for other stations in the same or nearby basins. If the stagedischarge relation is affected by ice, this information is given in a note to the table. 

No mention is made of occasional days of ice effect if the degree of accuracy of daily records is not changed.

The data herein presented generally comprise a description of the station, a skeleton 

rating table, and a table showing the daily discharge and monthly and yearly discharge and 

runoff of the stream. Records are published for the water year which begins on October 1 

and ends on September 30. A calendar for the water year 1956 is shown on page IV for the 

purpose of finding the day of the week for any date.

The description of the station gives the location, drainage area, records available, 

type and history of gages, average discharge, extremes of discharge, general remarks, and 

notations of revisions of the previously published record. The location of the gaging 

station and the drainage area are obtained from the most accurate maps available. River 

mileage, given under "Location" for some stations, is that determined and used by the 

Corps of Engineers unless otherwise noted. Under "Records available" are given the periods 

for which there are published records generally equivalent to those at the present site. 

Under "Gage" are given the type of gage currently in use and the datum of the present gage 

above mean sea level, and a condensed history of the types, locations, and datums of previous gages used during the period of records available. Under "Average discharge" is 

given the average discharge for the number of years indicated. It is not given for stations having fewer than five complete years of record or for stations where changes in 

water development during the period of record cause the figure to have little significance. 

Under "Extremes" are given the maximum discharge and gage height; the minimum discharge if 

there is little or no regulation; the minimum daily discharge if there is extensive regulation (also the minimum discharge if useful); and the minimum gage height (unless it is 

of no importance). In the first paragraph, the data given are for the complete current 

water year unless otherwise specified. In the second paragraph, the data given are for 

the periods of record within the calendar year dates in the heading (not necessarily those 

for the complete years indicated by the heading dates). Reliable information concerning 

major floods that have occurred outside the period of record are given in the third or 

last paragraph under "Extremes." Unless otherwise qualified, the maximum discharge corresponds to the crest stage obtained by use of a water-stage recorder, a crest-stage indicator, or a nonrecording gage read at the time of the crest. If the maximum gage height 

did not occur at the same time as the maximum discharge, it is given separately. Information pertaining to the accuracy of the records and conditions which affect the natural 

flow at the gaging station is given under "Remarks."

Previously published records of some stations have been found to be in error on the 

basis of data or information later obtained. Revisions of such records are usually published along with the current records in one of the annual reports. In order to make it 

easier to find such revised records, a paragraph headed "Revisions (water years)" has 

been added to the description of all stations for which revised records have been published. Listed therein are all the reports in which revisions have been published, each

493801 O -59 -2
6 SURFACE WATER SUPPLY, 1956, PART 11

followed by the water years for which figures are revised in that report. In listing the 

water years only one number is given; for Instance, 1933 stands for the water year 

October 1, 1932, to September 30, 1933. If no daily, monthly, or annual figures of discharge are concerned in the revision, that fact is brought out by notations after the 

year dates as follows: "(M)" means that only the instantaneous maximum discharge.was 

revised; "(m)" that only the instantaneous minimum was revised; and "(P)" that only peak 

discharges were revised. If the drainage area has been revised, the report in which the 

revised figure was first published is given. It should be noted that for all stations 

for which cubic feet per second per square mile and runoff in inches are published, a revision of the drainage area necessitates corresponding revision of all figures based on 

the drainage area. Revised figures of cubic feet per second per square mile and runoff 

in inches resulting from a revision of the drainage area only are usually not published 

in the annual series of reports.

Skeleton rating tables are published for all stations except those at which the daily 

discharge for the greater part of the open-water period was determined by the shiftingcontrol method, the slope method, or other special methods involving an equivalent adjustment to the gage height of more than one-tenth foot. Skeleton rating tables are generally 

not published for stations on canals.

For stations equipped with water-stage recorders, except those on streams subject to 

sudden or rapid fluctuation, the daily table gives the discharge corresponding to the 

daily mean gage height. For stations subject to such fluctuation the daily mean gage 

height may not indicate the true daily mean discharge, which must be obtained by averaging 

the discharge for parts of the day or by using the discharge integrator, an instrument for 

obtaining the daily mean discharge from a continuous gage-height graph and containing, as 

an essential element, a curve representing the stage-discharge relation at the station. 

For stations equipped with nonrecording gages, the table of daily discharge gives the 

discharge corresponding to once-daily readings of the gage, or to the mean of twice-daily 

readings, or to the mean gage height determined from gage-height graphs based on gage 

readings. For periods of rapidly changing stage, the daily mean discharge is determined 

from gage-height graphs based on gage readings, the frequency of which is stated in the 

station description.

In the table of daily discharge, the figures for the maximum day and the minimum day for 

each month are underlined. If the figure is repeated, it is underlined only on the first 

day of its occurrence.

In the monthly summary below the daily table, the line headed "Total" gives the sum of 

the daily figures; it is the total cfs-days for the month. The line headed "Mean" gives 

the average flow in cubic feet per second during the month. Runoff for the month may be 

expressed in cubic feet per second per square mile (line headed "Cfsm"), or in inches 

(line headed "In."}, or in acre-feet (line headed "Ac-ft"). Figures for cubic feet per 

second per square mile and runoff in inches are omitted if the drainage area includes 

large noncontrlbuting areas, or if the average annual rainfall over the drainage basin is 

usually less than 20 inches.

In the yearly summary below the monthly summary, the figures of maximum are the maximum 

daily discharges, not the momentary discharges when the water was at crest stage. Likewise, the minimums in this summary are the minimum daily discharges.

Peak discharges and the times of their occurrence and corresponding gage heights of
ACCURACY OF FIELD DATA AND COMPUTED RESULTS 7

most stations are listed below the table of dally and monthly discharge. All independent 

peaks above the selected base are given. The base discharge, which Is given In parentheses, Is selected so that an average of about three peaks a year will be presented. 

Peak discharges are not published for canals, ditches, drains, or for any stream for which 

the peaks are subject to substantial control by man.

Footnotes to the table of dally discharge indicate periods when discharge was computed 

or estimated by unusual or special methods during periods of no gage-height record and ice 

effect, or by other effects that reduce the degree of accuracy of the records. Days on 

which discharge measurements were made are. indicated by asterisk and footnote unless they 

were made at frequent regular intervals, in which Instance the general frequency of discharge measurements is given under "Remarks" in the station description.

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For some reservoirs 

a table showing dally contents or stage is given. A skeleton table of capacity at given 

stages is published each year for all reservoirs for which records are published on a dally 

basis, but is not published for reservoirs for which only monthly data are given.

Discharge measurements and determinations of peak .flows made at sites other than gaging 

stations are listed at the end of each report.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

The accuracy of streamflow data depends primarily on (1) the stability of the stagedischarge relation or, if the control is unstable, the frequency of discharge measurements, and (2) the accuracy of observations of stage, measurements of discharge, and interpretation of records.

The station description states the degree of accuracy of the records. "Excellent" indicates that, In general, the error in the dally records is believed to be less than 5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," probably 

more than 15 percent. The records of monthly and yearly mean discharge and runoff are, 

in general, more nearly accurate than the dally records.

Runoff at some stations, as Indicated by the monthly mean, may vary widely from natural 

runoff, owing to diversion, consumption, regulation by storage, increase or decrease in 

evaporation due to artificial causes, or to other factors. For such stations, figures of 

cubic feet per second per square mile and runoff in inches are not published unless storage or diversion records are Included to Indicate the extent of the regulation or diversion, or unless satisfactory adjustments can be made for changes in contents of reservoirs 

or for other changes incident to use and control. Evaporation from a reservoir is not 

Included in the adjustments for changes in reservoir contents, unless it is so stated. 

Even at those stations where adjustments are made, large errors in computed runoff may 

occur when relatively large negative adjustments are made or when evaporation is large in 

comparison with the observed discharge.

Many gaging stations on streams in the irrigated areas of the United States are situated 

above most of the diversions from those streams, and therefore the discharge recorded does 

not actually show the water supply available at the stations for further development, 

because water must first be supplied to existing irrigation systems.
SURFACE WATER SUPPLY, 1956, PART II

PUBLICATIONS

To facilitate publication of the annual series of reports, the area of the United 

States is divided into 14 parts whose boundaries coincide with certain natural drainage 

lines. Formerly, the results of streamflow measurements were published in 14 volumes, one 

for each of the 14 parts. Beginning with the reports for 1951, the records are published 

in 18 volumes, there being 2 volumes each for Parts 1, 2, 3, and 6. The boundaries of the 

various parts are indicated by the following list and the map in figure 2.

Part 1. North Atlantic slope basins, in two volumes:

A, North Atlantic slope basins, Maine to Connecticut. 

B, North Atlantic slope basins, New York to York River.

2. South Atlantic slope and eastern Gulf of Mexico basins, in two volumes: 

A, South Atlantic slope basins, James River to Savannah River. 

B, South Atlantic slope and eastern Gulf of Mexico basins, Ogeechee River 

to Pearl River.

3. Ohio River basin, in two volumes:

A, Ohio River basin except Cumberland and Tennessee River basins. 

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hudson Bay and upper Mississippi River basins.

6. Missouri River basin, in two volumes:

A, Missouri River basin above Sioux City, Iowa. 

B, Missouri River basin below Sioux City, Iowa.

7. Lower Mississippi River basin.

8. Western Gulf of Mexico basins.

9. Colorado River basin.

10. The Great Basin.

11. Pacific slope basins in California.

12. Pacific slope basins in Washington and upper Columbia River basin.

13. Snake River basin.

14. Pacific slope basins in Oregon and lower Columbia River basin.

Water-supply papers and other publications of the Geological Survey containing data on 

the water resources of the United States may be purchased or consulted as follows:

1. Copies may be purchased from the Superintendent of Documents, Government Printing 

Office, Washington 25, D. C., who will, on application, furnish lists giving prices. 

A list of Geological Survey publications may also be obtained by applying to the Director, 

Geological Survey, Washington, D. C.

2. Sets of the reports may be consulted in the libraries of the principal cities in 

the United States.

3. Sets are available for consultation in the offices of the Water Resources Division 

of the Geological Survey. Addresses of the offices in the area covered by this report are 

given on page 2.

Early records of the flow of streams in the United States are published in the reports 

listed below. In many of these reports records for years earlier than those indicated 

have been included for some streams.

Streamflow data for the years 1884-1901, In reports of the Geological Survey 

(A = Annual Report; B » Bulletin)

Report

10th A, 

llth A, 

12th A, 

13th A, 

14th A,

16th A,

18th A, 

WSP 15.

19th A,

pt. 

pt. 

pt.

pt. 

pt.

pt.

pt.

pt.

2 

2 

2 

3 

2

2

4

4

Character of data

Descriptive Information only.

Descriptions, measurements, gage heights, and ratings ...... 

Descriptive information only. 

Descriptions, measurements, gage heights, ratings, and 

monthly discharge .

Descriptions, measurements, ratings, and monthly discharge. 

Descriptions, measurements, and gage heights of streams 

east of the Mississippi River, and Missouri River and 

tributaries above Kansas River. 

Descriptions, measurements, and gage heights of streams 

west of the Mississippi River, except Missouri River and 

tributaries above Kansas River. 

Descriptions, measurements, ratings, and monthly discharge.

Year

1884 to 

1884 to 

1884-92 

1888-93 

1893-94

1895.

1896. 

1895-96 

1897.

1897. 

1897.

September 1890. 

June 30, 1891.
PUBLICATIONS
10 SURFACE WATER SUPPLY, 1956, PART 11

Streamflow data for the years 1884-1901, in reports of the Geological Survey--Continued 

(A = Annual Report; B Bulletin)

Report

30th A, pt. 4 

WSP 35 to 39. 

21st A, pt. 4 

WSP 47 to 52. 

22d A, pt. 4. 

WSP 65, 66... 

WSP 75.......

Character of data

Measurements, ratings, and gage heights of streams east of 

the Mississippi River, and Missouri River and tributaries. 

Measurements, ratings, and gage heights of streams west of 

the Mississippi River, except Missouri River and tributaries .

Monthly discharge ...........................................

Year

1898. 

1898.

1898. 

1899. 

1899. 

1900. 

1900. 

1901. 

1901.

Reports on surface-water supply containing records from 1878 to date for drainage basins 

in this report are listed below. The data for any particular gaging station will, in 

general, be found in the reports covering the years during which the station was maintained .

Numbers of water-supply papers containing results of stream measurements In Pacific slope 

basins In California, 1878-1956

Year

1912

1913

1914

1915

1916

1917

1918

WSP

a298

b299

C300

331

361

391

411

441

461

481

Year

1919-20

1921

1922

1923

1924

1925

1926

1927

1928

1929

WSP

511

531

551

571

591

611

651

651

671

691

Year

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

WSP

7O6

721

736

751

766

791

811

831

861

881

Year

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

WSP

901

931

961

981

1011

1041

1061

1091

1121

1151

Year

1950

1951

1952

1953

1954

1955

1956

WSP

1181

1215

1245

1285

1345

1395

1445

a Sacramento River basin.

b San Joaquln River basin.

c The Great Basin and Pacific coast basins.

Note. WSP 298, 299, 300 contain records of flow at all gaging stations in Part 11 from the beginning of records through June 30, 1912. They supersede records published In the 10th to 22nd 

Annual Reports, Bulletins 131 and 140, and earlier water-supply papers.

The records at most of the stations discussed in these reports extend over many years. 

Discharge measurements at many points other than regular gaging stations have been made 

each year and are published at the end of each report. The streams and points of measurement are listed in the same order as the streams and gaging stations in the body of the 

report. An index of the records obtained before 1904 has been published in Water-Supply 

Paper 119.

Each of the reports on the surface-water supply for the year 1939 (Water-Supppy Paper 

881 for the Pacific slope basins in California) contains, for the area included in that 

report, a summary of yearly discharge at gaging stations at which 10 or more complete years 

of record had been collected. These summaries were reprinted separately.

Reports also have been published that are compilations of records for various areas, 

usually a single State or drainage basin. These reports contain records previously published (some of which may have been revised), as well as some records not, contained in the 

annual series of water-supply papers. The following table lists reports of this type for 

the Pacific slope basins in California.

Reports containing compilations of records of discharge by States

WSP

298..........

300.........

636-K.......

Period

1887-1912

1878-1912

1891-1912

1878-1910

1890-1918

1895-1927

1895-1927

1894-1927

1895-1927

Report

River basin.

River basin.

Basin and Pacific Coast river basins.

Great basins In California.
RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 11

Records of discharge have been published also in State reports. Some of these are not 

contained in the publications of the Geological Survey or are revisions of records previously published in its water-supply papers. The following table contains a list of 

these reports for the area covered by this report.

State reports containing compilations of records of discharge

State Period Report Issued

Oregon. 

Do..

1878-1914 

1914-24 

1924-30 

1930-36 

1936-41

Bull. 4, Water resources of the State of

Oregon. 

Bull. 7, Water resources of the State of

Oregon. 

Bull. 8, Water resources of the State of

Oregon. 

Bull. 9, Water resources of the State of

Oregon. 

Bull. 10, Water resources of the State

of Oregon._____________________

Office of the State Engineer. 

Do.

Do. 

Do. 

Do.

The reports listed in the foregoing tables contain the customary records of discharge 

collected during the systematic operation of gaging stations. Detailed information on the 

stage and discharge of many streams during major floods has been included is special reports on these floods published by the Geological Survey. The more recent of these special 

reports also contain other pertinent hydrologic information and analyses and compilations 

of data relating to earlier notable floods. The following is a list of these reports:

Report

WSP 147: Destructive floods in the United States in 1904.

WSP 426: Southern California floods of January 1916.

WSP 771: Floods in the United States, magnitude and frequency.

WSP 796-C: Flood in La Canada Valley, Calif., January 1, 1934.

WSP 843: Floods in December 1937 in northern California.

WSP 844: Floods of March 1938 in southern California.

WSP 847: Maximum discharges at stream-measurement stations through September 1938.

WSP 1137-E: Floods of 1950 in southwestern Oregon and northwestern California.

WSP 1137-F: Flood of November-December 1950 in Central Valley basin, California.

WSP 1227-D: Summary of floods in the United States during 1951.

WSP 1260-D: Floods of 1952 in California.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The following table lists gaging stations for the area covered by this report, at which 

records of discharge were collected during the water year October 1955 to September 1956 

by agencies other than the Geological Survey. The records of these stations are not contained in publications of the Geological Survey. Not listed are gaging stations on many 

canals for which records were collected in connection with the operation of irriga'tion 

projects.

Records of discharge collected by agencies other than the Geological Survey

Stream

Alameda storm drain. . . .

Allso Wash. ............

Arroyo Slml ............

Do...... ............

Batavla storm drain. . . .

Beryl Ave. storm drain.

Location

Alameda St. at Santiago Blvd., northeast of Orange, Calif.

Nordhoff St., near Northrldge, Calif.

Calif. 

At Los Angeles Ave., northwest of 

Slml, Calif.

Calif.

Pacific Ave., near Playa Del Rey, 

Calif. 

Parker St., north of Santiago Creek, 

near Orange, Calif.

19th St. and Beryl Ave., near Alta 

Loma, Calif.

Calif.

Calif.

Period

1937-56

1939-56

1933-51, 

1952-56

1935-56t

1943-56

1940-56 

1935-56 

1955-56t

1947-56 

1929-56

1951-56

Collected by

Orange County Flood Control District.

Control District. 

Do.

Ventura County Water 

Resources Division.

Control District.

Do.

Do.

Orange County Flood Control District. 

Corps of Engineers.

San Bernardlno County 

Flood Control District. 

Los Angeles County Flood

Control District. 

Do.

t Records for some earlier years contained In water-supply papers of Geological Survey.
12 SURFACE WATER SUPPLY, 1956, PART 11

Records of discharge collected by agencies other than the Geological Survey Continued

Stream

Big Dry Creek Reservoir 

(Big Dry Outlet). 

Big Dry Creek Reservoir 

(Little Dry Outlet).

Burbank western storm 

drain.

Calleguas Creek. ....... 

Carbon Creek. ..........

City Creek, old channel

Clear Lake Reservoir 

(elevation and discharge ) . 

Colton southwest storm 

drain.

Cucamonga Creek. .......

Del Rosa Channel. ...... 

Dog Creek. .............

Dog Creek diversion. . . . 

Domlnquez Channel ......

Do ................. 

Dry Creek. .............

Duck Creek diversion. . .

East Etlwanda Creek. . . .

Eighth St. east conduit

Eighth St. west spreading grounds. 

Fifteenth St. storm 

drain. 

Pullerton relief 

channel. 

Qerber Reservoir (elevation and discharge).

La Veta Ave. storm 

drain.

Littlejohn Creek (below 

Farming ton Dam) . 

Little Sand Creek. .....

Live Oak Wash. ......... 

Los Angeles River. ..... 

Do ................. 

Do .................

Los Cerrltos Channel...

Do....... ..........

t Records for some ear 

* Records of outflow, 

tt Monthly discharge 1 

a Records of diversion 

b Records of diversion

Location

4 miles northeast of Clovls, Calif. . . 

5 miles north of Clovls, Calif .......

Below Big Tujunga Dam 1, near Sunland, Calif. 

Anaheim St., near Long Beach, Calif.. 

Riverside Drive near Glendale, Calif.

5 miles northeast of Planada, Calif. . 

1.5 miles north of Camarillo State 

Hospital, Camarlllo, Calif. 

Ramona Ave., near Chlno, Calif.......

State Highway 126 near Castalc, Calif.

At Chlno Avenue Bridge, near Chino, 

Calif. 

Church Ave., near East Highlands, 

Calif. 

Sec. 8, T. 47 N., R. 8 E., in California, near Langell Valley, Oreg.

Colton Ave., south of Colton, Calif.

Merrill Ave., south of Ontario, 

Calif.

Merced Ave . , near Baldwin Park, 

Calif. 

San Bernardino county line, near 

Mira Loma, Calif. 

Pacific Ave., near San Bernardino, 

Calif, 

i mile north of Academy, Calif. ......

8 miles northeast of Clovis, Calif... 

Carson Blvd. , Torrance, Calif. .......

Harbor Blvd., near Torrance, Calif... 

i mile north of Academy, Calif.......

1 mile northeast of Farmington, 

Calif. 

At Roosevelt Highway Bridge, near 

Mallbu, Calif. 

Pacific Electric Ry. bridge near 

Etlwanda, Calif. 

Below Eaton Wash debris dam, near 

Pasadena, Calif. 

8th St. at west channel of Cucamonga 

Wash, Upland, Calif. 

West channel of Cucamonga Wash, 

Upland, Calif. 

East of Campus Ave., Upland, Calif...

Brighton Way west of Magnolia Ave., 

Fuller ton, Calif. 

Sec. 12, T. 39 S. , R. 13 E., near 

Lorella, Oreg.

Intake, near southeast corner of sec. 

7, T. 41 S., R. 11 E., Oreg. ' 

2 miles upstream from mouth, near 

Sun Valley, Calif. 

La Veta Ave., east of Santiago Creek, 

southeast of Orange, Calif. 

Devonshire St., near Chatsworth, 

Calif, 

i mile south of Farmington, Calif....

Lemon St. at Sterling Ave., Del Rosa, 

Calif. 

^ mile below Live Oak Dam, near La 

Verne, Calif. 

Below 7th St., La Verne, Calif....... 

Marlposa St., near Burbank, Calif.... 

Radford Ave. at Studio City, Calif... 

Tujuna Ave. at North Hollywood, Calif. 

Above Anaheim St., near Long Beach, 

Calif. 

NEi sec. 29, T. 39 S., R. 12 E., 

about 1,000 ft above Keller Bridge 

and 5 miles southeast of Bonanza, 

Oreg. 

Harpold Dam, in Si sec. 19, T. 39 S., 

R. llj E., 4 miles southwest of 

Bonanza, Oreg. 

Her years contained In water-supply pa]

919-24; dally discharge 1924-54. 

to Littlejohn Creek.

Period

1949-56t 

1949-56* 

1947-56 

1932-56

1949-56 

1951-56

1949-56* 

1955-56

1942-56 

1945-56 

1952-56 

1947-56 

1919-56 tt

1942-56 

1928-56

1951-56 

1947-56

1947-56 

1941-56

1947-56 

1947-56 

1949-56

1951-56a 

1938-56

.1942-56 

1946-56

1951-56b 

1930-56 

1947-56 

1940-56 

1942-56 

1942-56 

1942-56 

1941-56 

1926-56 

1947-56 

1923-56 

1945-56 

1936-56 

1939-56 

1951-56 

1947-56 

1928-56

1928-56 

1938-56 

1950-56 

1950-56 

1942-56

1951-56

1945-56 

ers of Qeo

Collected

Fresno Irrigation 

District. 

Do.

San Bernardino County 

Flood Control District. 

Los Angeles County Flood 

Control District. 

Do. 

Do.

Corps of Engineers . 

Ventura County Water 

Resources Division. 

San Bernardino County 

Flood Control District. 

Los Angeles County Flood 

Control District. 

San Bernardino County 

Flood Control District. 

Do.

Bureau of Reclamation.

San Bernardino County 

Flood Control District. 

Los Angeles County Flood 

Control District. 

Do. 

San Bernardino County 

Flood Control District. 

Do. 

Los Angeles County Flood 

Control District. 

San Bernardino County 

Flood Control District. 

Do.

Fresno Irrigation 

District. 

Do. 

Los Angeles County Flood 

Control District. 

Do. 

Fresno Irrigation 

District. 

Do.

Do.

San Bernardino County 

Flood Control District. 

Los Angeles County Flood 

Control District. 

San Bernardino County 

Flood Control District. 

Do.

Do.

Orange County Flood 

Control District. 

Bureau of Reclamation.

San Bernardino County 

Flood Control District. 

Bureau of Reclamation.

Los Angeles County Flood 

Control District. 

Orange County Flood

Los Angeles County Flood 

Control District. 

Corps of Engineers .

San Bernardino County 

Flood Control District. 

Los Angeles County Flood 

Control District. 

Do. 

Do. 

Do. 

Do. 

Do.

Bureau of Reclamation.

Do. 

Logical Survey.
RKCORDS OP DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 13

Records of discharge collected by agencies other than the Geological Survey- -Continued

Stream

Do..................

Marlposa Reservoir ...... 

Middle Creek. ...........

Monrovia storm drain.... 

Montebello storm drain.. 

Nineteenth Street storm 

drain. 

Owens Reservoir .........

Peters Canyon Wash. .....

Potato Creek. ...........

Puddlngstone diversion 

channel.

Rlalto-Basellne storm 

drain .

Rio Hondo bypass channel

San Oabrlel-Azusa conduit diversion.

San Qabrlel-Azusa 

Duarte tunnel diversion

Do. .................

Do...................

San Qabrlel bypass 

channel. 

San Jaclnto River. ......

Santa Ana-Delhi drain. . .

Do..................

Do..................

Do............... ...

Santa Fe Channel ........ 

Santiago Creek. .........

Sawtelle-Westwood 

Channel . 

Sespe Creek. ............

Do..................

Sycamore Canyon channel

Thomas Creek. ...........

+ Records for some earl 

* Records of outflow

Location.

At Lost River diversion dam (Wilson 

Dam), SE&SWj sec. 29, T. 39 S., 

R. 10 E. 

Stone bridge below diversion dam near 

corner of sees. 7, 8, 17, and 18, 

T. 41 S., R. 11 E., near Merrill, 

Oreg. 

Cajon Blvd., near San Bernardlno, 

Calif. 

5 miles east of Le Qrand, Calif. ..... 

3 miles north of Upper Lake, Calif... 

Tlppecanoe Ave., near Loma Linda, 

Calif. 

Below' Legg Lake near Montebello, 

Calif. 

Above confluence with Sawplt Creek, 

near Monrovia, Calif.

Mines Ave., Montebello, Calif ........ 

19th St., east of Euclid Ave., 

Upland, Calif.

At Branford St., near Van Nuys, 

Calif. 

Van Nuys Blvd., near Van Nuys, Calif. 

Lane Road, near Santa Ana, Calif. ....

Ridge Route Highway, near Saugus, 

Calif. 

Bryant St., near Yucalpa, Calif......

Below Puddlngstone Dam, near San 

Dlraas, Calif. 

San Dlraas Water Co.'s outlet, 

Juanlta Ave., La Verne, Calif. 

Barton Rd., near Loraa Linda, Calif...

Baseline Ave., near San Bernardlno, 

Calif. 

Lower Azusa Road, lj miles north of 

El Monte, Calif. 

Above Whlttler Narrows Dam, 3^ miles 

north of Whlttler, Calif. 

Qlendon Way, near San Qabrlel, Calif, 

i mile downstream from Newport Rd. 

crossing, near Elslnore, Calif. 

Below San Dlraas Dam, near San Dlmas, 

Calif. 

Below Puddlngstone diversion dam, 

near San Dlmas, Calif. 

Qarcla Canyon near Azusa, Calif......

San Qabrlel Dam, near Azusa, Calif... 

Mouth of San Qabrlel Canyon near 

Azusa, Calif. 

Foothill Blvd., near Azusa, Calif.... 

At Garvey Ave., near El Monte, Calif. 

Florence Ave., near Santa Fe Springs, 

Calif. 

Above Whlttler Narrows Dam, 3^ miles 

north of Whlttler, Calif. 

1,000 ft upstream from Oilman Bridge, 

near San Jacinto, Calif. 

Head of Railroad Canyon near Perrls, 

Calif. 

Banana St. at Atchlson, Topeka and 

Santa Pe Ry. near Fontana, Calif. 

Newport Blvd., northeast of Costa 

Mesa, Calif. 

Yorba Bridge, northeast of Olive, 

Calif. 

Below Big Santa Anita Dam, near 

Arcadia, Calif. 

Foothill Blvd., near Arcadia, Calif.. 

Above railroad station at Lang, 

Calif. 

At Highway 99 near Saugus, Calif. .... 

On Montalvo Bridge, Highway 101, near 

Montalvo, Calif. 

Below Santa Fe Dam, Calif ............

Near Little Rock, Calif. ............. 

Below Sawplt Dam, near Monrovia, 

Calif. 

Culver Blvd., near Culver City, 

Calif. 

1.4 miles downstream from Hartman 

Guard Station, 1.6 miles southwest 

of Sespe Hot Springs, Calif. 

270 ft below Sierra Madre Dam at 

Sierra Madre, Calif. 

Woodland Ave., near Sierra Madre, 

Calif. 

Above Solway St., Qlendale, Calif.... 

Adams Sq. , Qlendale , Calif. .......... 

NWi sec. 22, T. 38 S., R. 19 E., 

Just upstream from Barnes Spring, 

8 miles northwest of Lakevlew, dreg. 

Ler years contained In water-supply pap

Period

1920-56t 

1923-56

1947-56

1948-56* 

1948-56 

1942-56

1955-56 

1927-56

1932-56 

1932-56 

1942-56

1949-56* 

1953-56

1928-56 

1930-56

1947-56 

1947-56 

1927-56 

1953-56 

1947-56 

1942-56 

1932-56 

1954-56

1928-56 

1954-56

1952-56 

1945-56 

1933-56t

1935-56t 

1918-56

1932-56 

1952-56 

1934-56

1954-56 

1954-56 

1949-56 

1947-56 

1949-56 

1934-56 

1948-56

1938-56 

1949-56

1929-56 

1927-32 

1949-56 

1944-56

1954-56 

1941-56

1951-56 

1953-56

1929-56 

1938-56

1927-56 

1927-56 

1945-56

ers of the

Collected by

Bureau of Reclamation. 

Do.

San Bernardino County 

Flood Control District. 

Corps of Engineers. 

Do. 

San Bernardlno County 

Flood Control District. 

Los Angeles County 

Flood Control District. 

Do.

Do. 

Do. 

San Bernardlno County 

Flood Control District. 

Corps of Engineers. 

Los Angeles County Flood 

Control District. 

Do. 

Orange County Flood 

Control District. 

Los Angeles County Flood 

Control District. 

San Bernardlno County 

Flood -Control District. 

Los Angeles County Flood 

Control District. 

Do.

San Bernardlno County 

Flood Control District. 

Do.

Los Angeles County Flood 

Control District. 

Do.

Do. 

Riverside County Flood 

Control District. 

Los Angeles County Flood 

Control District. 

Do.

Do.

Do. 

Do.

Do. 

Do. 

Do.

Do.

Riverside County Flood 

Control District. 

Do.

San Bernardlno County 

Flood Control District. 

Orange County Flood 

Control District. 

Do.

Los Angeles County Flood 

Control District. 

Do. 

Do.

Do. 

Ventura County Water 

Resources Division. 

Los Angeles County 

Flood Control District. 

Do. 

Do.

Do.

Ventura County Water 

Resources Division.

Los Angeles County Flood 

Control District. 

Do.

Do. 

Do. 

Oregon State engineer.

Geological Survey.
14 SURFACE WATER SUPPLY, 1956, PART 11

Records of discharge collected by agencies other than the Geological Survey Continued

Stream

Thompson Creek spreading 

ground Intake.

Tujunga Wash, central 

branch.

Verdugo storm drain. .....

Villa Park storm drain... 

Walnut Ave. storm drain..

Warm Creek. .............. 

Do...................

West Anahelm storm drain.

West Pork San Qabriel 

River.

Wlldwood Creek. ..........

Do...................

Yucalpa Creek tributary..

Location

Claremont, Calif. 

Thompson Creek Dam near Claremont, 

Calif.

Calif.

Bernardlno, Calif.

Calif. 

Magnolia Blvd., North Hollywood, 

Calif.

Center Dr. at Lincoln St., near 

Villa Park, Calif. 

Walnut Ave., at Prospect Ave., east 

of Orange, Calif.

Sterling Ave., near San Bernardlno, 

Calif.

Manchester Blvd., west of Anahelm, 

Calif. 

J mile below Cogswell Dam, Calif....

Llveoak Canyon Rd., near Yucalpa, 

Calif.

Llveoak Canyon Rd., at Riverside 

County line near Yucalpa, Calif.

Period

1941-56

1942-56

1930-56 

1942 56

1936-56

1936-56 

1928-56

1946-56

1936-56 

1934-56

1947-56

1950-56

Collected by

Control District. 

Do.

Flood Control District.

Control District. 

Do.

Flood Control District.

Control District. 

Orange County Flood 

Control District. 

Do.

Control District. 

San Bernardino County 

Flood Control District.

Orange County Flood 

Control District. 

Los Angeles County Flood 

Control District.

San Bernardlno County 

Flood Control District.

Do.

HYDROLOGIC CONDITIONS

In the area covered by this report, the outstanding hydrologio event was the recordbreaking flood in December, which extended from the southern end of the Central Valley in 

California northward along the coast into Oregon and inland to Nevada. Peak discharges of 

December 21-23 were the highest ever recorded. Flood volumes also exceeded all previous 

records. A comprehensive report of this flood is being prepared for publication as a 

water-supply paper; it will cover the period December 1955 to January 1956. During January and February more floods occurred in northern California; a few peak discharges exceeded those of December. During the rest of water year 1956, streamflow in northern 

California ranged from median to twice median; in southern California it was deficient. 

For three key gaging stations In the area covered by this report, a comparison of the 

monthly and yearly mean discharge during the 1956 water year with -the median discharge 

for the 25-year period 1921-45 is shown In figure 3 on following page.
HYDROLOGIC CONDITIONS 15

Arroyo Seco near Pasadena, Calif. 

Drainage area, 16.4 sq mi.

mi_m Oct. Nov. Dec. Jan. Feb. Mar. April May June July Aug. Sept. The

year

8000

7000

6000

 § 5000

14000

Q 3000

2000

1000

Kings River at Piedra, Calif. 

Drainage area, 1,694 sq mi.

E53 9,825

Oct. Nov. Dec. Jan. Feb. Mar. April June July Aug. Sept. The 

year

Oct. Nov. Dec. Jan. Feb. Mar. April May June July Aug. Sept. The

Median of monthly mean discharge for 26-year period 1921-45. 

Monthly mean discharge during water year 1956.

Figure 3. Comparison of discharge at three key gaging stations during 1956 water year with 

median discharge for 25-year period.
16 GAGING-STATION RECORDS

TIA JUANA RIVER BASIN 

Cottonwood Creek at Morena Dam, Calif.

Location (revised) . Lat 32°41'0l", long 116°32'45", In NEy sec. 23, T. 17 S., R. 4 E., 

on Morena Dam outlet tower.

Drainage area. 120 sq ml, approximately.

Records available. --January 1916, October 1936 to September 1956.

Page. Staff gage read once dally. Datum of gage Is 2,882.4 ft above mean sea level.

erage discharge . 20 years (1936-56), 10,910 acre-ft per y 

yearly mean discharges, 6,100 acre-ft per year (8.4 cfs).

Average discharge . 20 years (1936-56), 10,910 acre-ft per year (15.0 cfs); median of 

di

Remarks . Records of runoff represent all water reaching Morena Reservoir, Including

rainfall on reservoir surface, computed on basis of records of storage, release (draft), 

spill, leakage, and evaporation. Monthly evaporation from lake surface computed on 

basis of evaporation from Colorado pan using a coefficient of 0.80. Revised capacity 

and area ratings for reservoir are based on a resurvey made In 1948. Capacity of reservoir at permanent spillway level (gage height, .157.00 ft), 50,210 acre-ft. Dead 

storage, 654 acre-ft below outlet No. 3 at gage height 70.5 ft. No diversion above 

reservoir. Water Is released down Cottonwood Creek to Barrett Reservoir as required.

Cooperation. Records computed In cooperation with city of San Diego. 

Revisions (water years) . WSP 1091: 1946. WSP 1285: 1948.

Monthly runoff, water year October 1955 to September 1956

Month

Calendar year 1955..

March.................

April .................

Water year 1955-56..

Morena Reservoir

Gage 

height 

(feet)t

85.50 

85.10 

85.10

-

85.40 

85.90 

73.94 

71.22 

71.70 

71.50 

70.80 

70.10 

69.40 

68.70

-

Contents 

(acrefeet)

2,172 

2,120 

2,130

-

2,159 

2,225 

921 

706 

742 

727 

676 

626 

579 

533

-

Change 

in 

contents 

(acrefeet)

-52 

0 

+39

-158

+66 

-1,304 

-215 

+36 

-15 

-51 

-50 

-47 

-46

-1,639

Draft 

(acrefeet)

0 

0 

0

0

0 

1,156 

224 

0 

0 

0 

0 

0 

0

1,380

Evaporation 

(acrefeet)

45 

22 

10

558

8 

13 

24 

17 

27 

45 

43 

43 

36

333

Spill 

plus 

leakage 

(acrefeet)

7 

7 

7

86

" 7 

8 

3 

4 

3 

3 

3 

3 

2

57

Runoff 

(acrefeet)

0 

29 

56

486

81 

-127 

36 

57 

15 

-3 

-4 

-1 

-8

131

t On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, 

discordant figures of runoff may appear. To the extent that such discrepancies may be 

attributed to changes In reservoir capacity since the time of rating used, quantities too 

small for periods of falling stage In the reservoir are compensated by quantities too large 

for periods of corresponding rising stage.
TIA JUANA RIVER BASIN 17

Cottonwood Creek at Barrett Dam, near Dulzura, Calif.

Location. Lat 32°40'45", long 116°40'20", in M£ sec. 22, T. 17 S., R. 3 E., on Barrett 

Dam outlet tower, 17 miles northeast of Dulzura.

Drainage area. 250 sq mi.

Records available.--January 1906 to December 1915, October 1945 to September 1956. Published as "near Jamul" prior to October 1912 and as "near Dulzura" October 1912 to 

December 1915. October 1936 to September 1946, published as "near Dulzura"; records 

not equivalent, as they were computed to represent runoff from Cottonwood Creek basin 

below Morena Dam (drainage area, 130 sq mi).

Gage. Staff gage read once daily. Datum of gage is 1,446.12 ft above mean sea level. 

January 1906 to December 1915, staff gage at same site at different datum (prior to 

completion of dam).

Remarks. Records of runoff represent all water reaching Barrett Reservoir, including 

rainfall on the reservoir and water passing down Cottonwood Creek from Morena Reservoir, computed on basis of records of storage, release (draft), spill, leakage, and 

evaporation. Monthly evaporation from lake surface computed on basis of evaporation 

from Colorado pan using a coefficient of 0.80. Capacity and area ratings for reservoir are based on a resurvey made in 1948, 1951, and 1955. Capacity of reservoir at 

top of flash gates on spillway (gage height, 168.88 ft), 44,760 acre-ft. Dead storage, 

719 acre-ft below lowest outlet at gage height 58.88 ft, Included in these records. 

Plow regulated by Morena Reservoir (see preceding page)-. Water drawn from Barrett Reservoir is diverted out of drainage basin to Lower Otay Reservoir by Dulzura conduit for 

municipal use.

Cooperation. Records computed in cooperation with city of San Diego.

Monthly runoff, water year October 1955 to September 1956

Month

Calendar year 1955 . .

May...................

July..................

Water year 1955-56..

Barrett

Sage 

height 

(feet)t

66.90

-

67.30

67.80

62.70

62.90

62.60

61.70

61.30

-

Reservoir

Contents 

(acrefeet)

1,270

-

1,302

1,343

953

867

-

Change

In

contents (acrefeet)

-16

-1-288

+41

+550

+14

-20

-34

-403

Draft

(acrefeet)

0

3

0

1,450

Evaporation 

(acrefeet)

31

374

12

45

46

42

333

Spill 

plus

leakage 

(acrefeet)

0

0

0

0

0

0

0

0

0

0.3

Runoff

(acrefeet)

15

665

562

25

12

16

1,380

T On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, 

discordant figures of runoff may appear. This arises primarily from the difficulty of computing runoff as the residual of several larger quantities, which are not susceptible to 

measurement with a precision necessary to produce a final answer within desirable limits of 

accuracy.
18 TIA JUANA RIVER BASIN

Dulzura conduit near Dulzura, Calif.

Location (revised) . Lat 32°37'10", long 116°45'50", in SW£ sec. 10, T. 18 S., R. 2 E., 

on right bank 0.1 mile south of State Highway 94 and 1.8 miles southeast of Dulzura.

Records available. January 1909 to September 1915, May 1940 to September 1956. Published 

with records of Cottonwood Creek near Jamul prior to January 1911 and as "near Jamul 

January 1911 to December 1912.

Gage.--Water-stage recorder and Cipolletti weir. Datum of gage is 1,446.41 ft above mean 

sea level, unadjusted. Prior to November 1910, staff gage 12.2 miles upstream at different datum. December 1910 to September 1915, water-stage recorder and rectangular 

weir at site 1.6 miles upstream at different datum.

Average discharge. 22 years (1909-15, 1940-56), 14.3 cfs (10,350 acre-ft per year).

Extremes . 1909-TS. 1940-56: Maximum daily discharge, 65 cfs Feb. 4, 1911; no flow for 

periods in each year.

Remarks. Records good. Discharge measurements or observations of no flow generally made 

twice a month. Conduit diverts water from Cottonwood Creek at Barrett Dam in NW^ 

sec. 22, T. 17 S., R. 3 E., to Otay River basin.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Hov.

0

0

0

Dec.

0

0

0

Jan.

0"0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.2

0

0

.1

0.4

0.01

0.8

Feb.

o 0.3

0"

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

Mar.

O

3*

52

50

52

53 50-

49

50

46

46

48

43

37

28

22

15

12

8.7

7.6

6.3

5.3

4.4

2.6

.3

0

0

0

0

0

0

722.2

23.3

1,430

Apr.

~.3 0

0

0

0

0

0

0

0

0

0

0

7?4

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

0.03

2.0

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 0.1 Min 0 Mean 0.001 Ac-ft 0.6

Water year 1955-56: Max 53 Mln 0 Mean 1.98 Ao-ft 1,430

Cottonwood Creek above Tecate Creek, near Dulzura, Calif.

Location. Lat 32° 34'30", long 116°45'10", in SW^ sec. 26, T. 18 S., R. 2 E., on right 

bank 0.8 mile upstream from confluence with Tecate Creek and 5.1 miles south of 

Dulzura.

Drainage area. 316 sq mi.

Records available. October 1936 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 569.40 ft above mean sea level (levels by 

International Boundary and Water Commission).

Average discharge . 20 years, 10.7 cfs (7,750 acre-ft per year); median of yearly mean 

discharges, 2.6 cfs (1,880 acre-ft per year).

Extremes. No flow during year.

1336-56: Maximum discharge, 4,340 cfs Feb. 7, 1937 (gage height, 9.65 ft), from 

rating curve extended above 1,500 cfs by logarithmic plotting; no flow during part of 

each year.

Remarks.--No flow since May 5, 1955. Flow regulated by Morena Reservoir (see p. 16) and 

Barrett Reservoir (see preceding page). Water diverted outside drainage basin by Dulzura conduit (see above). Figures for the calendar year of 1955 are as follows: Total 

cfs-days, 5.0; maximum daily discharge, 0.5 cfs; minimum daily, zero; mean, 0.01 cfs; 

runoff, 10 acre-ft.

Revisions (water years). WSP 1245: 1937-38.
TIA JUANA RIVER BASIN 19

Campo Creek near Campo, Calif.

Location (revised). Lat 32°35'25", long 116°31'-30", In SE£ sec. 24, T. 18 S., R. 4 E., 

on left bank just upstream from bridge on State Highway 94, about 3.5 miles southwest 

of Campo.

Drainage area. 84 sq ml, approximately, of which 4 sq ml are In Mexico. 

Records available. October 1936 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Datum of gage Is 2,179.08 ft above 

mean sea level (State Highway Department benchmark). Prior to Dec. 1, 1954, at datum 

1 ft higher.

Average discharge. 20 years, 3.19 cfs (2,310 acre-ft per year); median of yearly mean 

discharges, 2.1 cfs (1,520 acre-ft per year).

Extremes. Maximum discharge during year, 1.8 cfs Apr. 13 (gage height, 1.42 ft); no flow 

during several months.

1936-56: Maximum discharge, 1,470 cfs Feb. 6, 1937 (gage height, 4.80 ft, present 

datum), from rating curve extended above 45 cfs on basis of veloclty-mean-depth relation 

and cross-sectional area at control; no flow at times during most years.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

A small conservation reservoir a quarter of a mile upstream, completed In August 1956, 

partially regulates flow.

Rating table, water year 1955-56 (gage height. In feet, and 

discharge, In cubic feet per second)

1.0

1.1

1.2 .5

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

0

ff

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

o.

0

.1

0.1

0.003

0.2

Jan.

0.1

.1

.1

.1

.1

.1

.1

.1

.1 *.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.2

.1 *.l

.2 *.3

.2

.2

.1

^4

4.1

0.13

8.1

Feb.

~7T 0.2

.1

.1

.1

.2

.1

.1

.1

.1

.1

.1 *.l

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

T5

0

0

-

2.8

0.10

5.6

Mar.

(*)

(*)

0

0

0

Apr.

0.1

TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 *.i

.1

.1

0_

0

0

0

0

0

0

.1

.1

.1.1

2.3

0.08

4.6

May

0.1

!l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

 0

.1

.1

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

1.6

0.05

3.2

June

0

0

0

July

(*)

0

0

0

Aug.

(*)

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955- Max 11 Mln 0 Mean 0.09 Ac-ft 65

Water year 1955-56: Max 0.4 Mln 0 Mean 0.03 Ac-ft 22

Peak discharge (base, 20 efsy.--No peak above base. 

* Discharge measurement or observation of no flow made on this day.

Note.--No gage-height record Dec. 25 to Jan. 9, Feb. 9-12, Feb. 28 to Mar. 1; discharge interpolated or estimated on basis of 1 discharge measurement and partial gage-height record.
20 TIA JUANA RIVER BASIN

Tia Juana River near Dulzura, Calif.

Location. Lat 32°33'50", long 116°46<25", in sec. 33, T. 18 S. , R. 2 E., on left bank 

0.5 mile downstream from confluence of Cottonwood and Tecate Creeks and 5.5 miles 

south of Dulzura.

Drainage area. 478 sq mi, of which 62 sq mi are in Mexico. 

Records available.--October 1936 to September 1956.

Gape.--Water-stage recorder. Datum of gage is 542.42 ft above mean sea level (levels by 

International Boundary and Water Commission). Prior to Sept. 19. 1939, at datum 

2.00 ft higher.

Average discharge.--20 years, 17.3 cfs (12,520 acre-ft per year); median of yearly mean 

oischarges, 5.8 cfs {4,200 acre-ft per year).

Extremes.--Maximum discharge during year, 0.2 cfs Apr. 13 (gage height, 2.18 ft); no flow 

during several months.

1936-56: Maximum discharge, 4,700 cfs Feb. 7, 1937 (gage height, 8.50 ft, present 

datum), from rating curve extended above 300 cfs on basis of velocity-mean-depth and 

area studies; no flow during part of most years.

Remarks.--Records good. Discharge measurements or observations of no flow generally made 

twice a month. Flow regulated by Morena Reservoir (see p. 16 ) and Barrett Reservoir 

(see p. 17 ). Water diverted outside drainage basins by Dulzura conduit (see p. 18).

Cooperation.--Five discharge measurements and three observations of no flow furnished by 

International Boundary and Water Commission.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

9 

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Total

Mean

Ac- ft

Oct.

0 0" 

O

0 

0

O 

0

0 

0

0

0

0

0

O

3

.1

,1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

1.2

O.O4

2.4

Nov.

0 

71

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

2.9

O.10

5.8

Dec.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Jan.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Feb.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

______

2.9

0.10

5.8

Mar.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Apr.

O.I

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.O

0.10

6.0

May

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

June

O

0

O

July

0

0

O

Aug.

0

0

0

Sept.

O

0

O

Calendar year 1955: Max o.3 Min 0 Mean O.09 Ac-ft 67

Water year 1955-56: Max 0.1 Min o Mean 0.06 Ac-ft 44
TIA JUANA RIVER BASIN 

Tia Juana River near Nestor, Calif.

Location. Lat 32° 33 '15", long 117° 03 '20", in NjNW^NEi sec. 2, T. 19 -S., R. 2 W. , on right 

bank 2.3 miles southeast of Nestor and 5 miles upstream from mouth.

Drainage area. --1. 668 sq mi, of which 1,198 sq mi are in Mexico.

Records available. --October 1914 to September 1915, October 1936 to September 1956.

Gage. --Water-stage recorder. Altitude of gage is 35 ft (from topographic map). Oct. 1, 

1914, to Sept. 30, 1915, reference point at site 2 miles downstream at mean sea level 

datum. Oct. 1, 1936, to Apr. 9, 1953, water-stage recorder at site 2 miles downstream 

at different datum.

re-ft per year);

en um.

Average discharge. --21 years (1914-15, 1936-56), 52.9 cfs (38,300 acr 

median of yearly mean discharges, 12 cfs (8,690 acre-ft per year).

Extremes. No flow during year.

1936-56: Maximum discharge, 17,700 cfs Feb. 7, 1937 {gage height, 8.20 ft, site 

and datum then in use), from rating curve extended above 2,000 cfs on basis of velocitydepth relation and cross section after peak; no flow during parts of each year.

Remarks. No flow since Apr. 16, 1954. Observations of no flow generally made once 

a month. Flow regulated by Morena Reservoir (see p. 16 ) and Barrett Reservoir (see 

p. 17 ) in the United States, and Rodriguez Reservoir (capacity, 111,630 acre-ft) 

operated by the government of Mexico on Rio de las Palmas in Mexico. The contents at 

the end of the month for Rodriguez Reservoir are given in the following table:

Month-end contents, water year October 1955 to September 1956

Date

Sept. 30, 1955

Nov. 30......

Dec. 31. .....

Jan. 31, 1956

Feb. 29......

Mar. 31......

Contents 

(acre-feet)

12,740

11,850

11,220

10,700

10,300

9,890

9,420

Date

Apr. 30......

June 30 ......

July 31......

Aug. 31......

Sept. 30. .....

Contents 

(acre-feet)

9,050

6,490

7,980

7,370

6,850

6,440

Cooperation. Records of contents of Rodriguez Reservoir furnished by International 

Boundary and Water Commission, United States Section.

OTAY RIVER BASIN 

Jamul Creek near Jamul, Calif.

Location. Lat 32°38'15", long 116°53'00", in ffi£ sec. 4, T. 18 S. , R. 1 E., on right 

bank 300 ft upstream from county road crossing at upper end of Lower Otay Reservoir, 

1.4 miles downstream from Dulzura Creek, and 5.5 miles south of Jamul.

Drainage area. 72 sq mi, approximately.

Records available.--April 1940 to September 1956.

Gage.--Water-stage recorder and broad-crested weir with venturi flume for low-water notch. 

Eatum of gage is 511.64 ft above mean sea level, datum of 1929. Prior to Oct. 1, 1951, 

at same site at datum 1.00 ft higher.

Extremes. Maximum discharge during year, 44 cfs Mar. 12 (gage height, 2.,54 ft); no flow 

during most of year.

1940-56: Maximum discharge, about 4,000 cfs Dec. 1, 1947 (gage height, 6.42 ft, 

present datum), from rating curve extended above 200 cfs by broad.-crested weir formula; 

no flow at times during some years.

Remarks. Records good. Discharge measurements or observations of no flow generally made 

twice a month. Water diverted from Cottonwood Creek by Dulzura conduit discharges into 

Jamul Creek via Dulzura Creek and is included in discharge records for this station 

(see p. 18).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

Jan.

0

0

0

0

0

0

o

0

0

0

Feb.

0.3

.2

.2

.1

.1

0

0

0

0

o

Mar.

0

O

18

32

37

42

42

41

43

41

Apr.

0.3

.4

.3

.2

.2

.2

.2

.2

.2

.1

Day

11

12

13

14

15

16

17

18

19

20

Jan.

0

O

0

0

o

o

0

0

0

0

Feb.

0

0

O

0

0

0

0

0

0

0

Mar.

39

43

39

36

26

20

15

12

9.2

7.1

Apr.

O.I

.2

1.2

1.0

.5

.3

.3

.3

.2

.2

Day

21

22

23

24

25

26

27

28

29

30

31

Runoff in acre-feet ....................................................

Jan.

0

0

O

0

O

o

.3

.2

.2

.3

.3

2.6

Feb.

0

O

o

0

0

0

0

0

0

_

-

1.8

Mar.

5.7

4.8

3.7

2.9

1.9

1.2

.7

.3

.2

.2

.2

1,120

Calendar year 1955: Max 1.4 Min 0 Mean O.04 Ac-ft 26

Apr.

0.2

.2

.1

.1

0

0

0

0

o

o

-

0.24

14

Water year 1955-56: Max 43 Min 0 Mean 1.57 Ac-ft 1,140

Note . No flow Oct. 1 to Dec. 31, 1955, May 1 to Sept. 3O, 1956.

493801 O -59 - 3
22 OTAY RIVER BASIN

Otay River at Savage Dam, Calif.

Location. La t 32°36'30", long 116°55'45", in NEiNE± sec. 13, T. 18 S., R. 1 W on 

Savage Dam outlet tower.

Drainage area. 98 sq mi, approximately.

Records available. October 1936 to September 1956.

Gage. Staff gage read once daily. Datum of gage is 347.20 ft above mean sea level. 

Since Oct. 1, 1945, auxiliary staff gage read two or more times per week near Upper 

Otay Dam. Datum of auxiliary gage is 477.50 ft above mean sea level.

Remarks. Records of runoff represent all water reaching Upper and Lower Otay Reservoirs, 

including rainfall on the reservoir surfaces and water brought in by Dulzura conduit, 

computed on basis of records of storage, release (draft), spill, leakage, and evaporation. Area and capacity tables for Upper Otay Reservoir are dated Mar. 23, 1955; for 

Lower Otay Reservoir, Apr. 3, 1956 and May 25, 1956. Monthly evaporation from lake 

surface computed on basis of evaporation from Colorado pan using coefficient of 0.80. 

Capacity of upper reservoir at spillway level (gage height, 72.02 ft), 2,825 acre-ft; 

capacity of lower reservoir at permanent spillway level (gage height, 137.50 ft), 

49,511 acre-ft. Dead storage of upper reservoir, 438 acre-ft below lowest outlet at 

gage height 43.32 ft, and of lower reservoir, 1,154 acre-ft below lowest outlet at gage 

height 47.85 ft, included in these records. Dulzura conduit (see p. 18) carries water 

from Barrett Reservoir on Cottonwood Creek (see p. 17) to Dulzura Creek, whence the 

water is carried to Lower Otay Reservoir by Jamul Creek (see p. 21). Small diversions 

for local use near reservoir. Water from these reservoirs is used for municipal supply 

by the city of San Diego.

Cooperation. Records computed in cooperation with city of San Diego.

Monthly runoff, October 1948 to September 1956

Calendar year 1948

May. ................

Water year 1948-49

Calendar year 1949

Water year 1949-50

Calendar year 1950

Hav

Water year 1950-51

Upper Otay 

Reservoir

Gage 

height 

(feet)t

45.01 

44.81 

44.50

-

44.58 

52.20 

55.12 

55.41 

45.00 

44.80 

44.21 

43.57 

42.93

-

42.35 

41.93 

41.74

-

41.64 

41.84 

42.53 

42.74 

42.45 

41.98 

41.30 

40.65 

39.93

-

39.36 

38.90 

38.74

-

38.57 

38.65 

38.55 

38.24 

38.08 

37.53 

36.81 

36.05 

35.44

-

Contents (acrefeet)

505 

497 

484

-

487 

S73 

1,068 

1,089 

504 

496 

472 

447 

423

-

402 

387 

381

-

378 

384 

409 

416 

406 

389 

366 

345 

323

-

307 

294 

289

-

285 

287 

284 

276 

272 

258 

240 

222 

209

-

Lower Otay 

Reservoir

Qage 

height 

(feet)t

111.92 

111.07 

110.88

-

111.19 

112.63 

112.10 

110.39 

110.57 

109.77 

105.84 

101.44 

96.60

-

91.86 

89.27 

87.52

-

85.81 

84.32 

84.56 

83.20 

81.43 

79.58 

78.09 

76.19 

74.24

-

72.69 

71.05 

70.04

-

69.68 

69.75 

69.63 

69.27 

68.93 

69.49 

68.47 

65.78 

63.07

-

Contents (acrefeet)

26,411 

25,796 

25,659

-

25,882 

26,932 

26,543 

25,310 

25,438 

24,871 

22,210 

19,457 

16,677

-

14,192 

12,936 

12,126

-

11,364 

10,726 

10,827 

10,259 

9,546 

8,830 

8,276 

7,596 

6,927

-

6,416 

5,898 

5,590

-

5,482 

5,503 

5,468 

5,362 

5,263 

5,427 

5,132 

4,407 

3,751

-

Combined 

contents 

(acrefeet)

26,916 

26,293 

26,143

-

26,369 

27,805 

27,611 

26,399 

25,942 

25,367 

22,682 

19,904 

17,100

-

14,594 

13,323 

12,507

-

11,742 

11,110 

11,236 

10,675 

9,952 

9,219 

8,642 

7,941 

7,250

-

6,723 

6,192 

5,879

-

5,767 

5,790 

5,752 

5,638 

5,535 

5,685 

5,372 

4,629 

3,960

-

Change 

In 

contents (acrefeet)

-623 

-150 

+226

tt-9,463

+1,436 

-194 

-1,212 

-457 

-575 

-2,685 

-2,778 

-2,804 

-2,506

-12,322

-1,271 

-816 

-765

-14,627

-632 

+126 

-561 

-723 

-733 

-577 

-701 

-691 

-527

-7,871

-531 

-313 

-112

-5,975

+23 

-38 

-114 

-103 

+150 

-313 

-743 

-669 -295

-3,058

Draft 

(acrefeet)

2,461 

2,336 

1,365

29,004

1,367 

1,299 

1,558 

2,092 

2,151 

2,369 

2,345 

2,409 

2,214

23,966

977 

733 

708

20,222

717 

639 

724 

716 

556 

371 

473 

470 

350

7,434

341 

199 

52

5,608

43 

63 

189 

128 

161 

173 

516 

539 

183

2,587

Evaporation 

(acrefeet)

186 

1S5 

93

3,087

95 

93 

173 

224 

277 

334 

323 

279 

240

2,502

167 

119 

63

2,387

38 

55 

117 

135 

161 

183 

182 

172 

138

1,530

111 

58 

43

1,393

44

62 

112 

92 

159 

186 

200 

147 

112

1,326

Spill 

plus 

leakage (acrefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Runoff 

(acrefeet)

2,024 

2,371 

1,684

22,628

2,898 

1,198 

519 

l.SSS' 

1,853 

18 

-110 

-116 

-52

14,146

-127 

36 

6

7,982

123 

820 

280 

128 

-16 

-23 

-46 

-49 

-39

1,093

-79 

-56 

-17

1,026

110 

87 

187 

117 

470 

46 

-27 

17 

0

855

t On first day of month.

tt Based on capacity table In use on Oct. 1,
OTAY RIVER BASIN

Otay River at Savage Dam, Calif. Continued 

Monthly runoff, October 1948 to September 1956 Continued

23

Month

October 1951........

Calendar year 1951

May. ................

Water year 1951-52

Calendar year 1952

April

May.................

July. ... . . . .

Water year 1952-53

Calendar year 1953

May.................

Water year 1953-54

Calendar year 1954

April...............

May.................

Water year 1954-55

Calendar year 1955

Hav

September. ..........

Water year 1955-56

Uppei 

Resell

Gage 

height 

(feet)t

34.89 

34.62 

34.46

-

40.63 

65.64 

65.68 

72.39 

72.22 

71.61 

71.16 

70.50 

69.82

-

69.25 

68.82 

68.78

-

68.82 

68.79 

68.61 

68.38 

68.09 

63.95 

48.90 

48.30 

47.65

-

47.13 

46.40 

46.46

-

56.19 

46.42 

46.68 

61.43 

61.54 

61.15 

60.58 

59.90 

59.30

-

58.70 

58.28 

58.01

-

57.80 

58.00 

57.90 

57.50 

57.20 

56.80 

56.20 

55.60 

54.90

-

49.20 

43.70 

43.50

-

43.50 

43.60 

43.50 

43.10 

43.00 

42.40 

41.80 

41.10 

40.40

-

- Otay 

"voir

Contents 

(acrefeet)

197 

192 

189

-

345 

2,028 

2,032 

2,877 

2,853 

2,76.9 

2,708 

2,620 

2,531

-

2,458 

2,404 

2,399

-

2,404 

2,400 

2,378 

2,350 

2,314 

1,844 

687 

656 

624

-

599 

566 

569

-

556 

567 

579 

1,593 

1,603 

1,566 

1,514 

1,452 

1,400

-

1,349 

1,314 

1,291

-

1,274 

1,290 

1,282 

1,250 

1,226 

1,195 

1,148 

1,103 

1,052

-

702 

452 

445

-

445 

448 

445 

429 

425 

404 

383 

360 

338

-

Lowei 

Resei

Gage 

height 

(fe£)t

61.82 

60.65 

60.36

-

61.91 

78.08 

83.92 

104.43 

108.25 

111.11 

113.23 

114.85 

116.34

-

116.64 

114.61 

112.26

-

110.11 

108.12 

106.28 

104. 58 

103.64 

101.51 

100.66 

97.19 

93.56

-

90.63 

87.26 

85.10

-

83.07 

81.82 

80.42 

90.08 

94.02 

97.31 

99.98 

98.72 

96.09

-

93.59 

90.96 

89.76

-

89.42 

89.62 

89.50 

89.00 

88.00 

86.40 

85.00 

81.90 

79.60

-

78.30 

78.20 

77.70

-

77.30 

77.00 

76.70 

77.90 

76.20 

73.90 

72.50 

71.10 

69.50

-

 Otay 

"voir

Contents (acrefeet)

3,468 

3,216 

3,155

-

3,488 

8,272 

10,557 

21,304 

23,820 

25,825 

27,578 

28,603 

29,761

-

29,996 

28,420 

26,660

-

25,112 

23,732 

22,500 

21,399 

20,805 

19,499 

18,991 

17,003 

15,056

-

13,586 

12,009 

11,058

-

10,206 

9,700 

9,152 

13,321 

15,295 

17,070 

18,592 

17,864 

16,399

-

15,072 

13,747 

13,167

-

13,007 

13,101 

13,044 

12,809 

12,345 

11,625 

11,015 

9,732 

8,838

-

8,353 

8,316 

8,134

-

7,990 

7,882 

7,775 

8,206 

7,599 

6,813 

6,356 

5,914 

5,430

-

Combined 

contents (acrefeet)

3,665 

3,408 

3,344

-

3,833 

10,300 

12,589 

24,181 

26,673 

28,594 

30,086 

31,223 

32,292

-

32,454 

30,824 

29,059

-

27,516 

26,132 

24,878 

23,749 

23,119 

21,343 

19,678 

17,659 

15,680

-

14,185 

12,575 

11,627

-

10,762 

10,267 

9,731 

14,914 

16,898 

18,636 

20,106 

19,316 

17,799

-

16,421 

15,061 

14,458

-

14,281 

14,391 

14,326 

14,059 

13,571 

12,820 

12,163 

10,835 

9,890

-

9,055 

8,768 

8,579

-

8,435 

8,330 

8,220 

8,635 

8,024 

7,217 

6,739 

6,274 

5,768

-

Change 

in 

contents 

(acrefeet)

-257 

-64 

4489

-1,934

+6,467 

+2,289 

+11,592 

+2,492 

+1,921 

+1,492 

+1,137 

+1,069 

+162

+28,789

-1,630 

-1,765 

-1,543

+23,683

-1,384 

-1,254 

-1,129 

-630 

-1,776 

-1,665 

-2,019 

-1,979 

-1,495

-18,269

-1,610 

-948 

-865

-16,754

-495 

-536 

+5,183 

+1,984 

+1,738 

+1,470 

-790 

-1,517 

-1,378

+2,236

-1,360 

-603 

-177

+3,519

+110 

-65 

-267 

-488 

-751 

-657 

-1,328 

-945 

-835

-7,366

-287 

-189 

-144

-5,846

-105 

-110 

+415 

-611 

-807 

-478 

-465 

-506 

-421

-3,708

Draft 

(acrefeet)

198 

25 

33

2,251

21 

24 

25 

165 

468 

908 

1,047 

1,119 

846

4,879

1,333 

1,757 

1,512

9,225

1,214 

1,020 

916 

409 

1,233 

1,158 

1,495 

1,500 

1,127

14,674

1,241 

797 

523

12,633

619 

532 

695 

938 

999 

1,108 

1,043 

1,166 

1,112

10,773

1,164 

505 

77

9,958

29 

28 

115 

321 

568 

385 

1,056 

700 

523

5,471

129 

78 

110

4,042

126 

52 

544 

582 

691 

242 

287 

280 

247

3,368

Evaporation 

(acrefeet)

81 

45 

22

1,262

27 

100 

149 

211 

458 

465 

573 

539 

446

3,116

308 

226 

81

3,583

109 

166 

219 

246 

395 

348 

386 

357 

265

3,106

221 

111 

93

2,916

42 

113 

115 

201 

321 

318 

382 

356 

273

2,546

183 

112 

77

2,493

31 

95 

168 

209 

197 

261 

257 

223 

202

2,015

110 

74 

38

1,865

31 

55 

120 

105 

167 

191 

194 

157 

146

1,388

Spill 

plus 

leakage 

(acrefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Runoff 

(aorefeet)

22 

6 

544

1,579

6,515 

2,413 

11,766 

2,868 

2,847 

2,865 

2,757 

2,727 

1,454

36,784

11 

218 

50

36,491

-61 

-68 

6 

25 

-148 

-159 

-138 

-122 

-103

-489

-148 

-40 

-249

-1,205

166 

109 

5,993 

3,123 

3,058 

2,896 

635 

5 

-1,993

13,555

-13 

14 

-23

13,970

170 

58 

16 

42 

14 -11 

-15 

-22 

-110

120

-48 

-37 

4

61

52 

-3 

1,079 

76 

51 

-45 

16 

-69 

-28

1,048

t On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, negative 

or discordant figures of runoff may appear. This arises primarily from the difficulty of computing 

runoff as the residual of several larger quantities, which are not susceptible to measurement with 

a precision necessary to produce a final answer within desirable limits of accuracy.
24 SWEETWATER RIVER BASIN

Sweetwater River at Loveland Dam, near Alpine, Calif.

Location (revised). Lat 32 0 46'54", long 116 0 47'35", in SE£SW£NE£ sec. 17, T. 16 S., R. 

2 E., at Loveland Dam, 4 miles southwest of Alpine.

Drainage area. 100 sq mi.

Records available. October 1944 to September 1956.

Sage. Staff gage read once daily. Datum of gage is 1,215 ft above mean sea level.

Average discharge. 12 years, 4,310 acre-ft per year (5.95 cfs); median of yearly mean 

discharges, 2,000 acre-ft per year (2.8 cfs).

Remarks. Records of runoff represent all water reaching Lake Loveland, including rainfall 

on the lake, computed on basis of records of storage, release (draft), spill, leakage, 

and evaporation. Monthly evaporation from lake surface computed on basis of evaporation 

from Colorado pans using coefficient of 0.80. Capacity and area ratings for t.he lake 

are dated April 1946. Capacity of Lake at spillway level (gage height, 140.00 ft), 

25,390 acre-ft. Dead storage, 125 acre-ft below lowest outlet at gage height -1.25 ft, 

included in these records. One small diversion of about 0.3 cfs above lake. Water is 

released down Sweetwater River to Sweetwater Reservoir as required.

Cooperation. Records furnished by California Water & Telephone Co. 

Revisions (water years). WSP 1091: 1945-46.

Monthly runoff, water year October 1955 to September 1956

Month

May. ...........................

Water year 1955-56 ...........

Lake Loveland

Qage 

height 

(feit)t

36.32 

36.14

36.14

-

36.30 

37.50 

38.82 

39.65 

41.18 

41.18 

40.72 

40.24 

39.94 

39.46

-

Contents (acrefeet)

1,334 

1,322 

1,322

-

1,333 

1,413 

1,504 

1,564 

1,678 

1,678 

1,643 

1,607 

1,585 

1,550

-

Change 

in 

contents (acrefeet)

-12

0

+11

+625

+80 

+91 

+60 

+114 

0 

-35 

-36 

-22 

-35

+216

Draft (forefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Evaporation 

(acrefeet)

23 

16 

8

279

9 

11 

25 

20 

35 

45 

46 

45 

43

326

Spill 

plus 

leakage (acrefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Runoff (acrefeet)

11 

16 

19

904

89

102 

85 

134 

35 

10 

10 

23 

8

542

t On first day of month.

Note. For months when inflow to the lake was small and other elements were large, negative or 

discordant figures of runoff may appear. This arises primarily from the difficulty of computing 

runoff as the residual of several larger quantities which are not susceptible of measurement with 

a precision necessary to produce a final answer within desirable limits of accuracy.
SWEETWATER RIVER BASIN 25

Sweetwater River at Sweetwater Dam, Calif.

Location. Lat 32°41'20", long 117°00'35", in La Nacion Grant, at Sweetwater Dam, 6 miles 

east of National City, San Diego County, and 8 miles upstream from mouth.

Drainage area. 181 sq mi.

Records available. October 1887 to September 1956.

aage. Staff gage read once daily. Datum of gage is 149.12 ft (revised) above mean sea 

level, datum of 1929.

Remarks. Records of inflow represent all water reaching Sweetwater Reservoir, including 

rainfall on reservoir and imported Colorado River water. Total inflow is computed on 

basis of records of storage, release (draft), spill, leakage, and evaporation. Colorado 

River water delivered to this reservoir through aqueduct of San Diego County Water 

Authority, as shown in table, is included in figures of total inflow but is excluded 

from figures of runoff from Sweetwater River basin. The first water from Colorado 

River reached this reservoir on Apr. 16, 1948. Monthly evaporation from lake surface 

computed on basis of evaporation from Colorado pan using coefficient of 0.80. Capacity 

and area ratings for reservoir are dated December 1947. Capacity of reservoir at spillway level (jgage height, 89.70 ft), 27,690 acre-ft. Dead storage, 4 acre-ft below lowest 

outlet at gage height 19.7 ft, included in these records. No diversion above reservoir. 

Regulation at Lake Loveland (see preceding page). Water is released as required for 

irrigation and domestic use in Chula Vista, National City, and contiguous areas.

Cooperation. Records furnished by California Water & Telephone Co. 

Revisions (water years).--WSP 811: 1928-32. WSP 1091: 1944-46.

Monthly runoff, water year October 1955 to September 1956

Month

November. .... 

December. ....

Calendar 

year 1955.

January ...... 

February .....

April........

September. . . . 

October. .....

Water year 

1955-56.

Sweetwater Reservoir

Gage

height 

(feet)t

53.78 

53.87 

54.79

-

56.34 

57.66 

58.94 

59.01 

59.75 

59.26 

58.14 

56.94 

55.64 

54.44

-

Contents 

(acrefeet)

5,650 

5,682 

6,009

-

6,585 

7,099 

7,624 

7,654 

7,967 

7,759 

7,295 

6,816 

6,320 

5,884

-

Change 

in 

contents (acrefeet)

+32 

+327 

+576

-905

+514 

+525 

+30 

+313 

-208 

-464 

-479 

-496 

-436

+234

Draft (acrefeet)

1,069 

790 

626

11,599

653 

614 

1,028 

782 

1,211 

1,330 

1,361 

1,362 

1,285

12,111

Evaporation (acrefeet)

103 

77 

53

1,523

56 

69 

134 

110 

185 

228 

223 

221 

201

1,660

Spill 

plus 

leakage 

(acrefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Total 

inflow (acrefeet)

1,204 

1,194 

1,255

12,217

1,223 

1,208 

1,192 

1,205 

1,188 

1,094 

1,105 

1,087 

1,050

14,005

Colorado 

River 

water 

Imported (acrefeet)

1,096 

1,095 

1,194

10, 574

1,132 

1,081 

1,052 

1,082 

1,106 

1,013 

1,026 

999 

957

12,833

Sweetwater 

River 

basin 

runoff (acrefeet)

108 

99 

61

1,643

91 

127 

140 

123 

82 

81 

79 

88 

93

1,172

t On first day of month.

Note. The runoff from the basin of Sweetwater River is equal to the algebraic sum of (l) change 

in contents, (2) draft, (3) evaporation, and (4) spill plus leakage, minus (5) the quantity imported 

from Colorado River. Computation of runoff from Sweetwater River basin, using the figures in the 

above table and resulting in the figures in the last column of the table, gives results that may be 

considerably less accurate than would be possible if a simple gaging station could be maintained on 

the river. This arises from the difficulty of computing the runoff from Sweetwater River basin as 

the residual of several larger quantities which are not susceptible to measurement with a precision 

necessary to produce a final answer within desirable limits of accuracy.
26 SAN DIEGO RIVER BASIN

Boulder Creek at Cuyamaca Reservoir, near Julian, Calif.

Location. Lat 32 e 59'20", long 116°35'10", in Nfi£ sec. 5, T. 14 S., R. 4 E., on outlet 

tower at Cuyamaca Dam, 7 miles south of Julian.

Drainage area. 12.0 sq mi.

Records available. October 1935 to September 1956 (inflow to Cuyamaca Reservoir; rainfall 

 on water surface deducted October 1939 to September 1944). June 1912 to September 1926, 

records not equivalent as they represent only outflow (draft) from Cuyamaca Reservoir.

Qage. Staff gage read periodically. Datum of gage is 4,600.2 ft above mean sea level 

Ulelix Irrigation District benchmark).

 ge. 12 years (1944-56), 2,090 acre-ft per year (2.89 cfs); median of 

"discharges, 1,060 acre-ft per year (1.5 cfs).

Average dlschar 

yearly mean

Remarks. Records of runoff represent all water reaching Cuyamaca Reservoir, including

 precipitation on reservoir, computed on basis of records of storage, release (draft), 

spill, leakage, and evaporation. Monthly evaporation from lake surface computed on 

basis of evaporation from Colorado pan using a coefficient of 0.80. Capacity and area 

ratings for reservoir are based on a resurvey made in the fall of 1949. Capacity of 

reservoir at spillway level (gage height, 35.4 ft), 11,540 acre-ft. No dead storage. 

Small diversions for local use near dam. Water is released down Boulder Creek to 

El Capitan Reservoir.

Cooperation.--Records of reservoir operation furnished by Helix Irrigation District

 (formerly La Mesa, Lemon Grove, and Spring Valley Irrigation District).

Revisions (water years). WSP 1011: 1943.

Monthly runoff, water year October 1955 to September 1956

Month

Calendar year 1955. ..........

October. .......................

Water year 1955-56. ..........

Cuyamaca Reservoir

Qage 

height 

(feet)t

_

-

10.33 

14.50 

15.00 

14.94 

15.35

-

Contents (acrefeet)

O

0 

0

-

1

137 

184 

179 

218 

0 

0 

O 

O 

O

-

Change 

In 

contents (acrefeet)

0 

O

+1

+1

+136 

+47 

-5 

+39 

-218 

O 

0 

0 

0

0

Draft 

(acrefeet)

0 

0 

O

462

0 

0 

0 

45 

280 

0 

0 

0 

0

325

Evaporation (acrefeet)

0 

O 

0

111

2 

20 

23 

38 

0 

0 

0 

0 

0

73

Spill 

plus 

leakage (acrefeet)

O

o

0

0

0 

0 

0 

0

o

0 

0 

0 

0

0

Runoff 

(acrefeet)

O 

O

1

574

138 

67 

18 

112 

62 

0 

0 

0 

0

398

t On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, negative 

or discordant figures of runoff may appear. This arises primarily from the difficulty of computing 

runoff as the residual of several larger quantities which are not susceptible of measurement with a 

a precision necessary to produce a final answer within desirable limits of accuracy.
SAN DIEGO RIVER BASIN 27

San Diego River at El Capitan Dam, Calif.

Location (revised). Lat 32°53'QO", long 116°48'25", in NE&SE^NEi sec. 7, T. 15 S., 

R. 2 E., on outlet tower of El Capitan Dam, 7 miles east of Lakeside.

Drainage area. 190 sq mi.

Records available. October 1945 to September 1956. October 1936 to September 1945, records not equivalent owing to exclusion of greater part of flow released from Cuyamaca 

Reservoir.

Gage. Staff gage read daily. Datum of gage is 553.0 ft above mean sea level.

Average discharge. 11 years (1945-56), 10,980 acre-ft per year (15.2 cfs); median of 

yearly mean discharges, 5,000 acre-ft per year (6.9 cfs).

Remarks. Records of runoff represent all water reaching El Capitan Reservoir from basin 

of San Diego River, Including rainfall on reservoir and water passing down Boulder 

Creek from Cuyamaca Reservoir, computed on basis of records of storage, release 

(draft), spill, leakage, and evaporation. Monthly evaporation from lake surface 

computed on basis of Colorado pan using coefficient of 0.80. Revised area and capacity 

ratings for reservoir, based on a resurvey completed in 1955, are dated Mar. 29, 1956, 

and May 25, 1956, respectively. Capacity of reservoir at spillway level (gage height, 

197.00 ft), 112,810 acre-ft. Dead storage, 59.2 acre-ft, below outlet at gage height 

21.0 ft, included in these records. No significant diversion above reservoir. Plow 

regulated by Cuyamaca Reservoir (see preceding page). Water is released as required 

for municipal use and irrigation.

Cooperation. Records computed In cooperation with city of San Diego. 

Revisions (water years). WSP 1091: 1946.

Monthly runoff, water year October 1955 to September 1956

Month

May. .........................

October. .....................

Water year 1955-56. ........

El Capitan Reservoir

Gage 

height 

(feet)t

85.14 

84.63 

80.59

-

76.73 

76.01 

76.20 

75.69 

76.04 

75.61 

75.12 

74.41 

73.81 

73.29

-

Contents 

(acrefeet)

10,611 

10,425 

9,000

-

7,735 

,509 

,569 

,410 

,518 

,385 

,234 

,018 

6,838 

6,684

-

Change 

In 

contents 

(acrefeet)

-186 

-1,425 

-1,265

-3,803

-226 

+60 

-159 

+108 

-133 

-151 

-216 

-180 

-154

-3,927

Draft 

(acrefeet)

55 

1,342 

1,287

4,344

615 

111 

182 

123 

297 

0 

44 

0 

0

4,056

Evaporation 

(acrefeet)

155 

101 

44

1,937

36 

56 

116 

101 

170 

209 

234 

226 

224

1,672

Spill 

plus 

leakage 

(acrefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Runoff 

(acrefeet)

24 

18 

66

2,478

425 

227 

139 

332 

334 

58 

62 46' 

70

1,801

t On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, discordant 

figures of runoff may appear. This arises primarily from the difficulty of computing runoff as the 

residual of several larger quantities which are not susceptible of measurement with a precision 

necessary to produce a final answer within desirable limits of accuracy.
28 SAN DIEGO RIVER BASIN

San Diego River near Santee, Calif.

Location. Lat 32°49'27", long 117<> 03'17", in Ex Mission San Diego Grant, on right bank in 

Mission Gorge, 0.2 mile upstream from left tributary and 6 miles west of Santee, San 

Diego County.

Drainage area. 380 sq mi.

Records available.. May 1912 to September 1956 (incomplete prior to 1920).

Gage. Water-stage recorder and unfinished rubble dam control. Altitude of gage is 180 ft 

~l"from topographic map). Prior to Nov. 10, 1920, staff gage at site If miles upstream

at different datum. Nov. 10, 1920, to Dec. 1, 1954, water-stage recorder at present

site at datum 1.0 ft higher.

Average discharge. 41 years (1912-15, 1917-18, 1919-56), 28.9 cfs (20,920 acre-ft per 

year); median of yearly mean discharges, 5.0 cfs (3,620 acre-ft per year).

Extremes. Maximum discharge during year, 31 cfs Apr. 14 (gage height, 2.17 ft); no flow 

for several months.

1912-56: Maximum discharge, 70,200 cfs Jan. 27, 1916 (gage height, 25.1 ft, site 

and datum then in use), on basis of velocity-area study; no flow at times during most 

years.

Remarks.--Records fair. Discharge measurements or observations of no flow generally made 

twice a month. Small flows of less than 0.05 cfs, from rising water at the gage, have 

been called zero. Flow regulated by Cuyamaca, El Capitan (see p.26, 27), and San 

Vicente Reservoirs. Diversions above station by city of San Diego for municipal supply 

and by Helix Irrigation District (formerly La Mesa, Lemon Grove, and Spring Valley 

Irrigation District).

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 2 to Jan. 21)

1.0

1.1

1.2

1.3

1.4 1.2

1.5

1.6

1.7

1.9

2.0

2.2 

3.8

6.1

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

(J

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

_a

.1

.1.1.1.1

.1

0

0

0

0

0

0.7

0.02

1.4

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1.1.1.1.1

.1

6.0

8.2 273

1.2

1.0

19.8

0.64

39

Feb.

5.3

174

.5

.4

.4

.5

.4

.5

.5

.5

.6

.6

.6

.5

.4

.4

.5

.6

.8

.7

.6

.6

.8

1.0

1.4

1.5

1.0

.7

.7

24.4

0.84

48

Mar.

0.6

.6

3

.1

.5

.4

.4

.3

.3

.4

.4

.4

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.2

.2

.2

.2

.2

.1

9.5

0.31

19

Apr.

0.2

.3

.2

.2

_a

.1.1.1.1

.2

.1

.1

.9

15

5.3

2.2

1.3

1.3

.9

.7

.6

.6

.5

.4

.3

.3

.3

.3

.2

.3

33.2

1.11

66

May

0.3

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1.1.1.1

2.1

0.07

4.2

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 195S Max 21 Min 0 Mean 0.45 Ac-ft 326

Water year 1955-56: Max 15 Min o Mean 0.24 Ac-ft 178
SAN DIEGUITO RIVER BASIN 29

Santa Ysabel Creek at Sutherland Dam, Calif.

Location. Lat 33°07'05", long 116°47'10", in NW^NW^SW^- sec. 21, T. 12 S., R. 2 E., on

face of Sutherland Dam, 1.6 miles upstream from Black Canyon Creek and 7 miles northeast 

of Ramona.

Drainage area. 57 sq mi, approximately.

Records available.--December 1912 to September 1928 October 1936 to September 1956. Prior 

to October 1953, published as "near Mesa Grande.

Gage.--Water-stage recorder. Datum of gage is 1,912.00 ft above mean sea level (levels by 

city of San Diego). Prior to Oct. 1, 1936, water-stage recorder at same site at various daturas. Oct. 1, 1936, to Sept. 30, 1953, water-stage recorder at site 1 mile downstream at different datum. Mar. 7 to Nov. 29, 1954, staff gage at present site and 

datum.

Average discharge. 35 years (1913-28, 1936-56), 15,570 acre-ft per year (21.5 cfs); median 

of yearly mean discharges, 8,500 acre-ft per year (12 cfs).

Remarks. Records of runoff represent all water reaching Sutherland Reservoir including 

rainfall on reservoir, computed on basis of records of storage, release (draft), spill, 

leakage, and evaporation. Monthly evaporation from lake surface computed on basis of 

evaporation from Colorado pan using coefficient of 0.80. Capacity and area ratings for 

the reservoir are based on an aerial survey made in 1949. Capacity of reservoir at 

spillway level (gage height, 145.00 ft), 29,680 acre-ft. Dead storage, 176 acre-ft 

below lowest outlet at gage height 28.00 ft, included in these records. Small diversion 

above reservoir. Water is released as required for municipal use.

Cooperation. Records computed in cooperation with city of San Diego. 

Monthly runoff, water year October 1955 to September 1956

Month

October .................

Calendar year 1955 ....

October .................

Water year 1955-56 ....

Sutherland

Gage 

height 

(feet)t

-

58.52

-

Reservoir

Contents 

(acrefeet)

-

1,860

-

Change

contents 

(acrefeet)

~9

+326

+432

(acrefeet)

0

0

Evapo-

(acrefeet)

368

427

Spill

leakage 

(acrefeet)

17

1

(acrefeet)

711

860

t On first day of month.

Note. For months when Inflow to the reservoir was small and other elements were large, negative 

or discordant figures of runoff may appear. This arises primarily from the difficulty of computing 

runoff as a residual of several larger quantities which are not susceptible of measurement with 

a precision necessary to produce a final answer within desirable limits of accuracy.
30 SAN DIEGUITO RIVER BASIN

Santa Ysabel Creek near Ramona, Calif.

Location ( revised ) . Lat 33°06'25", long 116°51'55", in SW^NWvNE^ sec. 27, T. 12 S., R. 1 

E. , on left bank 1.6 miles downstream from Temesoal Creek and 4.5 miles north of 

Ramona .

Drainage area. 110 sq mi.

Re c ords avai 1 abl e . - -February 1912 to February 1923, October 1943 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 847.88 ft above mean 

sea level (levels by city of San Diego Water Department). Prior to Jan. 31, 1916, 

staff gage at site half a mile upstream at different datum. Jan. 31, 1916, to Jan. 1, 

1921, staff gage and water-stage recorder at present site at datum 0.3 ft higher. 

Jan. 2, 1921, to Nov. 2, 1922, water-stage recorder at present site at datum 0.3 ft 

higher.

Extremes . Maximum discharge during year, 496 cfs Jan. 27 (gage height, 4.64 ft); no flow 

during several months.

1912-23, 1943-56: Maximum discharge, 28,400 cfs Jan. 27, 1916 (gage height, 14.0 ft, 

datum then in use, from rating curve extended above 1,500 cfs by velocity-area study; 

no flow during parts of some years.

Remarks . Records good. Discharge measurements or observations of no flow generally made 

twice a month. Flow regulated by Sutherland Reservoir beginning July 1954 (see preceding page). Small diversions above station.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second)

(Shifting-control method used Dec. 22 to Jan. 27,

Jan. 29 to Apr. 3)

1.8 0 2.3 11

1.9 .6 2.5 23

2.0 1.9 2.8 50

2.1 4.0 3.2 105

2.2 7.1 3.8 233

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

£6

£7

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.1

214

9.9

5.8

5

0

*£

270.0

8.71

536

Feb.

4^3 

3.3

2.8

2.6

2.4

2.2

2.2

1.7

1.4

1.4

1.2

1.1

1.0

T7J 1.1

1.4

1.4

1.4

1.4

1.4

1.2

1.1

1.7

4.0

3.8

2.6

2.2

2.0

1.9

57.2

1.97

113

Mar.

fc*

1.6

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.2

l'.2

1.2

1.1

1.0

1.0

.9

.7

.6

.6

.5

.4

.3

.3

.3

34.2

1.10

68

Apr.

0.7 

.8

.8

.7

.6

.5

.4 it'.z

.4

.6

2.4

3.5

1.9

1.2

1.0

1.0

.9

.7

.5

.4

.4

.3

.3

.3

.5

6.0

3.8

1.7

33.2

1.11

66

May

1.0

'.5

.3

.3

.2

.2

.Z

.2

.3

.3

.2

.2

.1

.1

0~0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

4.8

0.15

9.5

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 5.3 Min 0 Mean 0.22 Ac-ft 158 

Water year 1955-56: Max 214 Mln 0 Mean 1.09 Ac-ft 792
SAN DIEGUITO RIVER BASIN 31

Santa Ysabel Creek near San Pasqual, Calif.

Location (revised). Lat 33"OS"10", long 116"54'56", In NE£NW£SE£ sec. 31, T. 12 S., 

R. IE., on left bank 1.1 miles downstream from Clevenger Canyon and 2 miles east of 

San Pasqual.

Drainage area. 128 sq mi.

Records available. December 1905 to September 1912 (published as "near Escondldo"), 

April 1947 to November 1955 (irrigation seasons only), April to September 1956.

Page. Water-stage recorder and concrete control. Altitude of gage Is 510 ft (from topographic map). Dec. 17, 1905, to Sept. 30, 1912, staff gage at site a quarter of a mile 

downstream at different datum.

Extremes.--Maximum discharge observed during period, 7.2 cfs Apr. 28 (gage height, 1.33 ft>, 

no flow during most of period.

1905-12, 1947-56; Maximum discharge observed, 8,000 cfs Mar. 24, 1906 (gage height, 

6.3 ft, site and datum then in use); no flow during many years.

Remarks.--Records good. Small diversion above station. Plow regulated since July 1954 

by Sutherland Reservoir (see p. 29).

Rating table, Apr. 26 to Sept. 30, 1956 (gage height. In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 26-28)

0.5 0

.6 

.7 

.8 

.9

1.0

1.1

1.2

1.3

1.3 

2.1 

3.2 

4.9

Discharge, In cubic feet per second, April to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

13

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct. Nov.

(*)

(*)

Dec.

(*)

Jan. Feb.

...__.

Mar. Apr.

.

_

-

-

-

_

-

-

.

-

_

.

_

_

-

.

_

_

_

-

_

_

_

_

-

«0.7

.9

1.6

4.0

1.7

_

.

-

May

1.0

'.67

.4

.3

.3

.2

.2

.3

.4

.3

.3

.2

!i

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

5.4

0.17

11

June

(*)

(*)

0

0

0

July

(*)

0

0

0

Aug.

0

0

0

Sept.

(*)

0

0

0

Calendar year : Max Hln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

* Discharge measurement or observation of no flow made on this day.
32 SAN DIEGUITO RIVER BASIN

Guejito Creek near San Pasqual, Calif.

Location (revised). Lat 33°06'57", long 116°57'08", in NW£NW$SE£ sec. 23, T. 12 S., R. 1 

w., on left bank 0.3 mile upstream from Rockwood Canyon Creek and 1.8 miles north of 

San Fasqual.

Drainage area. 24 sq mi, approximately.

Records available. December 1946 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 560 ft (from topographic map).

Average discharge. 9 years (1947-56), 1.01 cfs (731 acre-ft per year).

Extremes. Maximum discharge during year, 690 cfs Jan. 27 (gage height, 3.97 ft); no flow 

Oct. 1 to Dec. 1, May 15-23, June 4 to Sept. 30.

1946-56: Maximum discharge, 842 cfs Jan. 18, 1952 (gage height, 4.11 ft); no flow 

during periods of most years.

Remarks. Records good below 10 cfs, fair above. Discharge measurements generally made 

twice a month. Diversion about a quarter of a mile upstream for irrigation.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

0.0 

.1 

.2 

.4

.3 

1.2

1.6

0

.1

.2

.6

1.9

3.6

6.0

1.9 

2.1 

2.3 

2.6 

3.0 

3.3

9.4

14

25

52

124

225

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

T.2T3"

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.1

4.5

0.15

8.9

Jan.

 30.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

.1

.3

.2

.3

.4

.5

14

"Iff 206

2.4

1.6

1.7

239.7

7.73

475

Feb.

1.3

T^

.7

.7

.7

.7

.6

.6

.5

.5

4

.4

.4

.4

.6

.6

.5

.5

.4

.4

.4

.7

1.2

.7

.6

.5

.4

.4

17.1

0.59

34

Mar.

0.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

"72" .2

'.Z

.2

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

8.4

0.27

17

Apr.

0.4

.5

.4

.3

i§.

.2

.2

.2

.2

.3

.3

.4

1.5

T7S

.6

.4

.4

.4

.4

.3

.2

.2

.2

.2

.2

.2

.5

.3

.3

.2

11.1

0.37

22

May

0.2

.2

.2

.1

.1

.1

.1

.1

.2

-V?.

.2

.2

.1

.1

0.

0

0

0

0

0

0

0

0

.1.1

.1.1.1

.1

.1

.1

3.0

0.10

6.0

June

0.1

t \

,1

0"0

0

0

0

0

0

0

July Aug.

o !

o

0

c

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

0

0

0

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 8.5 Mln 0 Mean 0.22 Ac-ft 161

Water year 1955-56: Max 206 Mln 0 Mean 0.78 Ao-ft 564

Peak discharge (base. 30 cfa). Jan. 27 (5 a.m.) 690 cfs (3.97 ft).
SAN DIEGUITO RIVER BASIN

Guejlto Creek at San Pasqual, Calif.

Location. Lat 33"05'35", long 116"57'45", In NW£ sec. 35, T. 12 S., R. 1 W., on right bank 

at mouth, at highway bridge, 1 mile west of San Pasqual.

Drainage area. 28 sq ml, approximately.

Records available. February to September 1915, October 1916 to September 1917, October 

1946 to September 1956 (discontinued). Published as "near Escondito" prior to October 

1946.

Gage. Water-stage recorder. Datum of gage Is 416.69 ft above mean sea level (levels by 

California Division of Water Resources). Prior to October 1946, staff gage at same 

site at different datums.

Average discharge. 11 years (1916-17, 1946-56), 0.77 cfs (557 acre-ft per year); median 

of yearly mean discharges, 0.2 cfs (140 acre-ft per year).

Extremes. Maximum discharge during year, 707 cfs Jan. 27 (gage height, 3.97 ft); no flow 

during most of year.

1915, 1916-17, 1946-56: Maximum discharge, about 900 cfs Jan. 18, 1952 (gage height, 

4.6 ft), estimated on basis of record for station near San Pasqual; no flow during 

several months of each year.

Remarks. Records poor. Observations of no flow generally made twice a month. Small 

diversion about 2 miles above station, and several pumps along creek within 2 miles 

above station for Irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Jan. 27................. 206

28................. 1.9

Note. Plow occurred only on days listed above.

Month

Water year 1955-56 ...................

Cfs-days

_

Maximum

2O6

Minimum

0

Mean

.57

Runoff In 

acre-feet

412

412

Santa Maria Creek near Ramona, Calif.

Location (revised) . Lat 33°03'08", long 116°56'4l", In SE-J-SE&SEi sec. 11, T. 13 S., R. 

1 W., on left bank 4.6 miles upstream from mouth and 3.8 miles northwest of Ramona.

Drainage area. 58 sq ml, approximately.

Records available. November 1912 to September 1920, October 1946 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage Is 1,300 ft (from 

topographic map). Original Installation destroyed by flood of Jan. 16, 1916; rebuilt 

at same site at different datum.

Average discharge. 17 years (1913-20, 1946-56), 5.61 cfs (4,060 acre-ft per year); median 

of yearly mean discharges, 0.9 cfs (650 acre-ft per year).

Extremes. Maximum daily discharge during year, 0.1 cfs Mar. 31 (gage height, 0.94 ft); no 

flow during most of year.

1913-20, 1946-56: Maximum discharge, 7,140 cfs Jan. 27 1916 (gage height, 15.9 ft, 

datum then in use), on basis of slope-area determination of peak flow; no flow during 

several months of each year.

Remarks. Records good. Discharge measurements or observations of no flow generally made 

twice a month. City of Ramona pumps water from stream above station for municipal 

supply.

Revisions (water years). WSP 1285: 1952.

Discharge, In cubic feet per second, water year October 1955 to September 1956 

Mar. 31................. 0.1

Note. Plow occurred only on days listed above.

Month

Water year 1955-56 .................

Cfs-days

_

Maximum

6 a

.1

Minimum

0

Mean

0.003

Runoff In 

acre -feet

.2

Peak discharge (base. 20 efs). No peak above base.
34 SAN DIEQUITO RIVER BASIN

San Dlegulto River near San Pasqual, Calif.

Drainage area. RM sq ml, approximately.

Re£ords_|vallaile.-April 1947 to November 1955 (Irrigation seasons only), April to SepGage.-Water-stage recorder. Altitude of gage Is 325 ft (from topographic map).

30, 1954. Observations of no flow generally made once a month

San Dlegulto River at Lake Hodges, Calif.

Location. Lat 33°02'48", long 117°07'33", In NE^SEfrlW^ sec. 18, T. 13 S., R. 2 W., on 

right bank 800 ft upstream from Lake Hodges Dam and 6.2 miles southwest of Escondldo.

Drainage area. 303 sq ml.

Records available. --January 1916 to September 1956. Published as "near Bernardo" prior to 

October 1920 and as "near Escondldo ' October 1920 to September 1925.

Gage. Staff gage read once dally. Datum of gage Is 200.0 ft above mean sea level. Prior 

to January 1919, staff gage at same site at different datum (prior to completion of dam).

Remarks. Records of runoff represent all water reaching Lake Hodges, Including rainfall 

on lake, computed on basis of records of storage, release (draft), spill, leakage, evaporation, and supplemental water from Colorado River delivered through aqueduct of San 

Diego County Water Authority. Capacity and area ratings for lake are based on a resurvey 

In 1948. Monthly evaporation from lake surface computed on basis of evaporation from 

Colorado pan using coefficient of 0.80. Capacity of lake at spillway level (gage height, 

115.00 ft), 33,550 acre-ft. Dead storage, 1,160 acre-ft below lowest outlet at gage 

height 54.0 ft, Included In these records. Diversions for Irrigation above Lake Hodges. 

Water drawn from Lake Hodges passes through a conduit to San Dlegulto reregulatlng 

reservoir, from which It Is released as required for municipal use. Plow regulated since 

July 1954 by Sutherland Reservoir (see p. 29).

Cooperation. Records computed in cooperation with city of San Diego. 

Revisions (water years) . WSP 1091: 1946. WSP 1121: 1947.

Monthly runoff, water year October 1955 to September 1956

Month

Calendar year 1955 . .

March.................

May...................

October ...............

Mater year 1955-56 . .

Lake Hodges

Gage 

height 

(feet)t

67.96 

64.60 

63.50

-

61.40 

61.80 

67.40 

63.70 

66.50 

67.10 

65.50 

64.60 

63 .50 

63.20

-

Contents 

(acrefeet)

3,681 

2,926 

2,7OO

-

2,292 

2,367 

3,552 

2,740 

3,345 

3,483 

3,120 

2,926 

2,700 

2,640

-

Change 

in 

contents (acrefeet)

-755 

-226. 

-4O8

-1,306

+75 

+1,185 

-812 

+605 

+138 

-363 

-194 

-226 

-60

-1,041

Draft 

(acrefeet)

1,220 

741 

619

10,566

645 

43 

864 

569 

943 

1,180 

1,270 

1,300 

1,100

1O,494

Evaporation 

(acrefeet)

49 

35 

18

882

14 

28 

57 

52 

82 

99 

101 

92 

84

711

Spill 

plus 

leakage 

(acrefeet)

0.2 

.2 

.2

2.6

.2

.3 

.3 

0 

.3 

.2 

.2 

.1 

.1

2.3

Total 

Inflow 

(acrefeet)

514 

550 

229

10,144

734 

1,256 

109 

1,226 

1,163 

916 

1,177 

1,166 

1,124

10,164

Colorado 

River 

water 

Ine Hided 

(acrefeet)

533 

522 

21O

10,467

555 

1,249 

1O6 

1,194 

1,340 

972 

1,355 

1,412 

1,415

10,863

Total 

runoff 

(acrefeet)

-19 

28 

19

-323

179 

7 

3 

32 

-177 

-56 

-178 

-246 

-291

-699

t On first day of month.

Mote. Runoff from basin of San Diegulto River is equal to total Inflow as shown in table minus 

"Colorado River water Included." However, as thus computed the results may be In error, frequently 

being negative. This arises primarily from the difficulty of computing runoff from the basin as the 

residual of several larger quantities which are not susceptible of measurement with a precision necessary to produce final results within reasonable limits of accuracy.
SAN LUIS REY RIVER BASIN 35

San Luis Rey River at Lake Henshaw, near Mesa Qrande, Calif.

Location (revised). Lat 33°14 1 20", long 116°45'43", in Valle de San Jose Grant, at Henshaw Dam, 4 miles north of Mesa Grande, San Diego County.

Drainage area. 209 sq mi.

Records available. January 1923 to September 1956. October 1911 to January 1923 at site 

1 mile downstream published as "near Mesa Grande"; records not equivalent due to change 

in natural water losses resulting from creation of Lake Henshaw.

Gage. Staff gage read once dally. Datum of gage is 2,620 ft above mean sea level. Prior 

to June 14, 1912, staff gage at same site at different datum. June 14, 1912, to January 1923, water-stage recorder at site 1 mile downstream at different datum.

Average discharge. 11 years (1911-22), 43,160 acre-ft per year (59.6 cfs), below dam site; 

34 years (1922-56), 22,030 acre-ft per year (30.4 cfs), inflow to Lake Henshaw, exclusive of 90 percent of rainfall on lake surface; median of yearly inflow, 12,700 acre-ft 

per year (17.5 cfs).

Remarks. Records of runoff represent all water reaching Lake Henshaw, exclusive of 

90 percent of rainfall on water surface of lake and supplemental water obtained by 

pumping ground water from area adjacent to lake, computed on basis of records of storage, release (draft), spill, leakage, evaporation, rainfall, and ground-water pumpage. 

Monthly evaporation from lake surface computed on basis of evaporation from a floating 

pan using a coefficient of 0.87, except during periods when winds swamp the floating 

pan. Evaporation for these periods is computed on basis of Colorado pan using coefficient of 0.80. Capacity and area ratings for lake are based on resurvey made in October 

1951. Capacity of reservoir at spillway level (gage height, 107.00 ft), 194,300 acreft. No dead storage. Since storage of water was begun, runoff as computed has been 

exclusive of 90 percent of rainfall on water surface of lake. During the year the 

amount of rainfall excluded was 543 acre-ft. No diversion above Lake Henshaw. No flow 

over spillway since dam was completed. Water is released down San Luis Rey River for 

diversion downstream for irrigation, power, and domestic use.

Cooperation. Records furnished by Vista Irrigation District.

Monthly runoff, water year October 1955 to September 1956

December. ...........

Calendar year 1955

Water year 1955-56

Lake ]

Gage 

height 

(feet)t

35.62

37.26

-

38.25

38.87

36.92

36.05

32.77

29.11

-

lenshaw

Contents 

(acrefeet)

2,450

3,351

4,300

-

4,955

5,400

4,563

4,090

3,584

2,884

2, .109

1,521

1,140

-

Change

In

contents (acrefeet)

_

+376

+901

+949

-1,788

+655

+445

-837

-473

-506

-700

-775

-588

-381

-934

Draft

(acrefeet)

_

471

0

0

12,015

1,084

498

1,525

1,352

1,125

1,248

1,404

1,314

1,168

11,189

Net 

evaporation (acrefeet)

_

+154

+36

-8

2,261

-123

+30

+237

+77

+275

+348

+275

+195

+134

+1,630

Spill 

plus

leakage (acrefeet)

_

0

0

o

o

0

o

0

0

0

0

0

0

0

0

Pumped 

ground 

water

Included (acrefeet)

-

9O7

860

850

10,889

844

785

828

827

827

835

850

854

836

10,103

Runoff

feet)

-

94

77

91

1,599

772

188

97

129

67

61

54

67

85

1,782

t On last day of month.

Note. Net evaporation, as used In computing this record, Is total evaporation less 90 percent of 

rainfall on water surface of reservoir. Supplemental water obtained by pumping ground water from 

area adjacent to lake Is subtracted from Inflow to obtain runoff. However, as thus computed the results may be In error. This arises primarily from the difficulty of computing runoff from basin as 

the residual of several larger quantities which are not susceptible of measurement with a precision 

necessary to produce a final answer within reasonable limits of accuracy.
36 SAN LUIS KEY RIVER BASIN

San Luis Rey River below Pala diversion dam, near Pala, Calif.

Location (revised) . La t 33°21'23", long 117°02'25", in NW£NW£NE£ sec. 36, T. 9 S., R. 2 W., 

on right bank downstream from Pala diversion dam, 1.8 miles east of Pala.

Drainage area. 326 sq. mi.

Records available. May 1944 to November 1956 (irrigation seasons only).

Gage . --Water-stage recorder. Altitude of gage is 485 ft (from topographic map).

Remarks . Records good. Discharge measurements or observations of no flow generally made 

once a month. Plow regulated by Lake Henshaw (see preceding page). Diversions above 

station mainly by Escondido Mutual Water Co. Bureau of Indian Affairs, Irrigation Service, diverted about 210 acre-ft during period Apr. 1 to Nov. 30 at Pala diversion dam 

above station. Results of discharge measurements, in cubic feet per second, of San Luis 

Rey River above Pala diversion dam made from January to December 1956 are given 

herewith.

Jan. 3........ 0.20

July 16........ .07

Aug. 2........ .08

Sept.13......... .06

Oct. 10........ 0.02

24........ .04

Nov. 7........ .04

15........ .04

Nov. 27........ 0.04

Dec. 13........ .09

28........ .09

Discharge, In cubic feet per second, April to November 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Acs- ft

Jan. Feb. Mar.

to. 51

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

.1

TT

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.2

0.007

0.4

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Oct.

0

0

0

Nov.

0

0

0

Dee.

Calendar year Max Mln Mean Ae-ft

The season: Max - Mln - Mean - Ae-ft 0.4

t Result of discharge measurement.
SAN LUIS REY RIVER BASIN 37

San Luis Rey River at Monserate Narrows, near Pala, Calif.

Location. Lat 33°20'15", long 117°08'10", in NE^ sec. 6, T. 10 S., R. 2 W., on left bank

4 miles southwest of Pala and 6 miles northeast of Bonsall. 

Drainage area. 383 sq mi. 

Records available. December 1935 to March 1938 (fragmentary), April 1938 to November 1941,

October 1946 to September 1956. 

Gage. Water-stage recorder. Altitude of gage is 270 ft (from topographic map). Prior to

October 1946, at same site at different datum. Oct. 22, 1946, to Nov. 30, 1954, at

datum 1.0 ft higher. 

Average discharge. 13 years (1938-41, 1946-56), 11.7 cfs (8,470 acre-ft per year); median

of yearly mean discharges, 3.9 cfs (2,800 acre-ft per year). 

Extremes. Maximum discharge during year, 351 cfs Jan. 27 (gage height, 3.19 ft); no flow

for several months.

1935-41, 1946-56: Maximum gage height, 8.7 ft Feb. 7, 1937, datum then in use (discharge not determined); no flow at times during 1948-56. 

Remarks. Records fair. Discharge measurements or observations of no flow generally made

twice a month. Flow regulated by Lake Henshaw (see p. 35). Several diversions above

station (see records for station "below Pala diversion dam, near Pala," on preceding

page).

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

~42 196

14 

9.0

7.9

268.9

8.67

533

Feb.

7.3

674

6.1 

6.1

5.9

5.6

5.3

5.1

4.6

4.6

4.6

4.4

4.2

4.2

4.0

4.0 

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

4.0

134.4

4.63

267

Mar.

3.8

378

3.8 

3.8

3.8

3.2

3.0

3.0

3.0

3.0

3.0

3.0

3.8

2.7

2.5

2.4

2.4 

2.2

2.2

2.1

2.1

2.0

2.0

1.8

1.7

1.7

1.6

1.6

fcl

1.5

78.5

2.53

156

Apr.

1.6

1.6

fcf

1.5

1.5

1.6

1.6

1.6

1.6

1.6

1.7

1.8

178

1.8

1.8

1.7

1.7

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.7

1.7

1.7 

1.7

49.4

1.65

98

May

.6

.6

.6

.6

.6

.5

.5

.5

.5

1.5

1.4

1.4

1.3

1.3

1.2

1.1

1.1

1.1

1.0

1.0

.9

.9

.9

.9

.9

.9

.8

78 

.8

.8

37.1

1.20

74

June

0.8 "75

.8 

.8

.8

.7

.7

.7

.7

.7

.6

.5

.5

.5

.4

.4

.4

.3

.3

.2

.2

.1

0

5

0

0

0

0 

0

12.3

0.41

24

July

0

0

0

Calendar year 1955: Max 5,2 Mln 0 Mean 0.80 Ac-ft 578

Aug.

0

0

0

Sept.

0

0

0

water year 1955-56: Max 196 Mln 0 Mean 1.59 Ac-ft 1,150

San Luis Key River near Bonsall, Calif.

Location (revised) . Lat 33°15'13", long 117°14'48", in SW^NE^NE^- sec. 1, T. 11 S., R. 4 

W., on left bank 0.7 mile downstream from bridge on Fallbrook Road (State Highway 76) 

and 2.8 miles southwest of Bonsall.

Drainage area. 514 sq mi.

Records available. July 1916 to September 1918 (gage heights and discharge measurements 

only).October 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage is 108.10 ft above mean sea level, datum of

~1~929. July 1916 to September 1918, staff gages at site 0.8 mile upstream at different 

datums. October 1929 to Nov. 15, 1945, water-stage recorder at present site at datum 

3.44 ft higher and Nov. 16. 1945, to Sept. 16, 1946, at datum 1.44 ft higher.

Average discharge. 27 yfcars (1929-56), 25.6 cfs (18,530 acre-ft per year); median of yearly 

mean discharges, 9.9 cfs (7,200 acre-ft per year).

Extremes. No flow during year.

T9~29-56: Maximum discharge, 18,100 cfs Mar. 3, 1938 (gage height, 12.60 ft, datum 

then in use) , from rating curve extended above 2,400 cfs; no flow during part of each 

year.

Remarks. No flow since Jan. 18, 1955. Observations of no flow generally made once a month. 

Flow regulated by Lake Henshaw (see p. 35). Several diversions above station (see records for station "below Pala diversion dam, near Pala," on p. 36). Figures for the 

calendar year of 1955 are as follows: Total cfs-days, 0.1 cfs; maximum daily discharge, 

0.1 cfs: minimum daily, zero; mean, 0.0003 cfs; runoff, 0.2 acre-ft.

Revisions (water years) . WSP 881: 1938.

493801 O -59 -4
38 SAN LUIS RE? RIVER BASIN

San Luis Rey River at Oceanside, Calif.

Location (revisedj. Lat 33°12'48", long 117°22'33", in SW£SB£SWi sec. 14, T. 11 S

R. 5 W., on right bank 0.7 mile upstream from U. S. Highway 101 bridge, 1.1 miles upstream from mouth, and 1.2 miles north of Oceanside.

Drainage area. 557 sq mi.

Records available. April 1912 to September 1914 (published as "near Oceanside"), January 

1916, OctoDerl929 to January 1942, October 1946 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 20 ft (from topographic map). April 

1912 to September 1914 staff gage at site three-quarters of a mile upstream at different datum. January 1916 staff gage a quarter of a mile downstream at different datum.

Average discharge. 24 years (1912-14, 1929-41, 1946-56), 22.0 cfs (15,930 acre-ft per 

year); median of yearly mean discharges, 2.0 cfs (1,400 acre-ft per year).

Maximum discharge, 95,600 cfs Jan. 27, 1916; no

Extremes. No flow during year.

1912-14, 1916, 1929-42, 1946-56: 

flow for several months each year.

Remarks. No flow since Nov. 30, 1952. Plow regulated by Lake Henshaw (see p.36 ). Several diversions above station (see records for station "below Pala diversion dam. near 

Pala," p. 36 )_

SANTA MARGARITA RIVER BASIN

Temecula Creek at Vail Dam, Calif. 

(Formerly published as Temecula Creek at Vail Dam, near Temecula)

Location. Lat 33°29'44", long lie'SS'SS", in Pauba Grant, at Vail Dam, 0.2 mile downstream from Arroyo Seco and 10 miles east of Temecula, Riverside County.

Drainage area. 319 sq mi.

Records available. October 1948 to September 1956. January 1923 to October 1930 at site 

300 ft downstream and October 1930 to September 1948 at site 700 ft downstream, published as at Nigger Canyon, near Temecula"; records not equivalent owing to change in 

natural water loss resulting from creation of Vail Lake. October 1948 to September 

1951 published as "at Nigger Canyon, near Temecula"; records are for draft and spill 

only from Vail Lake. October 1951 to September 1955, published as "at Vail Dam, near 

Temecula.

..--Water-stage recorder. Datum of gage is 1,350.0 ft above mean sea level (levels by 

ureau of Reclamation). Water-stage recorder at site 700 ft (revised) downstream measures release and spill. Prior to Oct. 16, 1930, at site 300 ft downstream at several 

different datums. Oct. 16, 1930, to September 1948 at site 700 ft downstream at different datum.

Average discharge. 25 years (1923-48), 10,580 acre-ft per year (14.6 cfs); 8 years (1948- 

56), 3,770 acre-ft per year (5.19 cfs).

Remarks. Records of runoff represent all water reaching Vail Lake, including rainfall on 

lake surface, computed on basis of records of storage, release (draft), spill, and 

evaporation. Monthly evaporation from lake surface computed on basis of evaporation 

from Class A pan using coefficient of 0.77. Capacity and area ratings for lake are 

based on a survey made in 1947. Capacity of lake at spillway level (gage height, 120.00 

ft), 49,370 acre-ft. Dead storage, 2.4 acre-ft (corrected) below lowest outlet at 

gage height 2.5 ft (corrected), included in these records. Water is released down 

Temecula Creek for diversion about 1 mile below dam as required.

Cooperation. Record of lake water-surface elevations furnished by Santa Margarita Ranch 

(U. S. Navy) and Pauba Ranch.

Monthly runoff, water year October 1955 to September 1956

Month

September .......................

May.............................

Water year 1955-56. . ..........

Vail

Gage 

height 

(feet)t

32.47

_

Lake

Contents 

(acrefeet)

1,362

1 954

_

Change 

in

contents 

(acrefeet)

-556

Draft 

and

spill 

(acrefeet)

0

0

0

238

1.322

Evapo-

(acrefeet)

604

Runoff

(acrefeet)

1.370

t At 12 p.m. on last day of month.
SANTA MARGARITA RIVER BASIN 39

Murrieta Creek at Temecula, Calif.

Location. Lat 33 0 28'47", long IWOS'SS", in Temecula Grant, on right bank 0.5 mile 

south of Temecula, Riverside County, and 0.6 mile upstream from mouth.

Drainage area. 220 sq mi.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,050 ft (from topographic map). Prior 

u> Jan. 6, 1931, staff gage and sharp-crested weir at site half a mile downstream at 

different datum. Jan. 6, 1931, to Dec. 16, 1938, supplemental water-stage recorder 

and sharp-crested weir at site half a mile downstream at different datum used to record low flows.

Average discharge. 26 years, 10.7 cfs (7,750 acre-ft per year); median of yearly mean 

discharges, 3.0 cfs (2,200 acre-ft per year).

Extremes. Maximum discharge during year, 116 cfs Jan. 27 (gage height, 2.02 ft); minimum 

daily, 0.2 cfs for many days.

1930-56: Maximum discharge, 17,500 cfs Jan. 23, 1943 (gage height, 13.82 ft); minimum daily, 0.1 cfs for several days during 1952-53.

Remarks. Records good. Discharge measurements generally made daily except Sundays.

Cooperation. Gage-height record and 308 discharge measurements furnished by Santa Margarita Ranch (U.S. Navy) and Pauba Ranch.

Revisions (water years). WSP 1345: 1952.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used June 27 to July 11, Aug. 31 to Sept. 8)

0.1 

.2 

.3 

.4 

.5

0.2

.3

.5

.9

1.6

3.0

1.5

1.6

4.7

10

23

45

55

Discharge, in cubic feet per-second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0.2 ~T2"

.2

.2

.2

.2

.2

.3

.4

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.4

.5

75

.4

10.2

0.33

20

Nov.

0.5

.6

.5

.5

.4

.375-

.3

.3

.3

.4

.8

.5

.6

.6

.5

.6

.5

.5

.5

.5

.9

77

.6

.5

.5

.5

.5

.5

.5

15.2

0.51

30

Dec.

~rs 0.5

.8

.7

.8

.8

.7

.6

.6

.6

.5

.5

.5

.5

.5

.6

.9

.9

.8

.8

.8

.8

.8

.9

1.0

.8

.7

1.0

1.0

1.0

1.0

23.2

0.75

46

Jan.

1.0

.6

.8

.8

1.2

1.5

1.0

1.2

.9

.9

.6

.6

1.0

.7

.7

.6

.6

.5

7£

.7

.9

1.0

.8

.8

.9

16

55~8-.2

3.3

1.9

1.7

107.0

3.45

212

Feb.

1.6

TT?

1.1

1.2

1.2

1.1

1.0

.9

.9

.8

.7

.7

.8

.7

.7

.6

Tff

.7

.7

.7

.6

.7

.8

1.3

1.3

1.1

.9

.9

.8

26.5

0.91

53

Mar.

0.7

.8

.8

1.0

1.1

1.4

T75

1.0

1.0

.8

.8

1.0

.8

.6

.6

.5

75

.5

.6

.6

.5

.5

.5

.7

.9

.9

.9

.8

.8

.5

.9

24.3

0.78

48

Apr.

0.7

.8

.8

.7

.7

.7

.8

.8

.7

.8

1.1

1.2

5.7

~T.2 12

2.0

2.0

1.6

1.3

.9

.8

.6

.5

.5

.5

.5

.5

.5

.4

74

44.7

1.49

89

May

0.4 ^

.6

.4

.4

.4

.4

.4

.5

.5

.7

1.0

1.0

~X1.3

.6

.5

.7

.5

.4

.4

.4

.4

.4

.4

.5

.5

.4

.4

.6

.6

16.9

0.55

34

June

0.6

.878-

.8

.8

.8

.6

.4

.4

.5

.4

.3

7?

.3

.3

.3

.3

.3

.3

.3

.4

.4

.5

.5

.6

.5

.4

.4

.4

.3

14.0

0.47

28

July

0.3

.2

7?

.2

.2

.2

.2

.2

.2

.2

.4

75

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

7.2

0.23

14

Aug.

0.2 -TI

.4

.5

75

.4

.4

.4

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.4

.4

.5

.5

.4

.3

.3

.4

.3

.3

.3

.2

10.2

0.33

20

Sept.

0.2

'.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

.5

75

.4

.3

.4

.3

.4

.3

.3

.2

.2

.2

.2

.2

.2

7.9

0.26

16

Calendar year 1955: Max 95 Mln 0.2 Mean 1.27 Ao-ft 920

Water year 1955-56= Max 55 Mln 0.2 Mean 0.84 Ao-ft 610

Peak discharge (base, 55 cfs). Jan. 27 (6:45 a.m.) 116 cfs (2.02 ft).
40 SANTA MARGARITA RIVER BASIN

Santa Margarita River near Temecula, Calif.

Location. Lat 33°28'26", long 117°08'30", in Temecula Grant, on left bank at upper end 

of Temecula Canyon, 0.1 mile downstream from Murrieta Creek and 1.5 miles south of 

Temecula, Riverside County.

Drainage area. 592 sq mi.

Records available. January 1923 to September 1956. Prior to October 1952, published as 

"Temecula Creek at Railroad Canyon, near Temecula."

Gage.--Water-stage recorder. Altitude of gage is 950 ft (from topographic map).

Average discharge.--25 years (1923-48), 28.2 cfs (20,420 acre-ft per year), 8 years

(1948-56), 11.5 cfs (8,330 acre-ft per year); median of yearly mean discharges (1923-48), 

13 cfs (9,400 acre-ft per year).

Extremes.--Maximum discharge during year, 132 cfs Jan. 27 (gage height, 2.90 ft); minimum 

daily, 2.4 cfs Sept. 26, 27.

1923-56: Maximum discharge, 25,000 cfs Feb. 16, 1927 (gage height, 14.6 ft), from 

rating curve extended above 10,000 cfs by logarithmic plotting; minimum, 0.4 cfs 

July 16, 1925.

Remarks. Records fair. Discharge measurements generally made daily except Sundays.

Pumping diversions above gage affect flow during irrigation season. Plow partly regulated by Vail Reservoir beginning in November 1948 (capacity, 49,370 acre-ft).

Cooperation. Gage-height record and 308 discharge measurements furnished by Santa Margarita Ranch (U. S. Navy) and Pauba Ranch.

Revisions (water years).--WSP 981: 1927(M).

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 6 to Feb. 3, Feb. 11-15, Feb. 21 to

Mar. 9, Mar. 28, Apr. 11-13, Apr. 16 to June 8, July 9-11, Aug. 1-25,

Sept. 19-30)

0.54

.6

.8 

1.0 

1.2

2.4 

3.0 

5.2 

8.2

12

1.5 

1.8 

2.1 

2.4

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

3.9

3.9

4.4

4.5

TTS

4.0

4.0

3.7

3.8

5.6

3.8

4.3

4.2

3.8

3.8

3.8

3.8

3.8

4.4

4.4

4.2

4.2

3.9

3.9

3.8

3.7

4.3

4.3

4.0

3.9

3.8

124.2

4.01

246

Nov.

3.9

4.0

4.5

4.3

3.7

3.5

3.4 374-

3.4

3.4

3.8

4.6

4.4

4.9

4.6

4.6

4.5

4.5

4.5

4.5

4.7

5.1

T79

4.7

4.7

4.7

4.7

4.7

4.9

4.9

130.4

4.35

259

Dec.

5.1

579

5.7

5.8

5.8

5.9

5.9

5.7

5.5

5.4

5.4

5.4

5.4

5.4

5.4

5.4

6.1

6.4 S72-

5.8

5.9

6.1

5.9

5.8

5.7

5.7

5.5

5.9

6.2

6.4

6.2

178.9

5.77

355

Jan.

6.2

5.9

6.1

6.2

6.8

7.1

6.6

6.8

6.6

6.5

6.1

5.8

6.2

5.4

5.1

5.1

5.0

4.9

479

5.1

5.5

5.4

5.2

5.1

5.1

29

7422"

12

10

9.2

300.9

9.71

597

Feb.

9.2

ST*

7.7

8.4

8.5

8.7

8.2

8.2

7.7

7.4

6.8

6.4

6.2

6.1

6.1

6.1

6.1

5.9

6.1

6.2

5.8 579"

6.5

7.2

7.1

7.0

6.6

6.6

6.6

-

203.7

7.02

404

Mar.

6.6

6.4

6.6

7.0

7.6

7.1

6.6

6.5

6.5

6.5

6.5

6.5

6.4

5.8

5.4

5.2

5.2

5.1

B7T

5.1

5.1

5.1

5.4

5.4

5.9

5.9

5.8

5.8

5.4

5.1

5.7

184.3

5.95

366

Apr.

5.4

5.1

4.9

4.9

4.7

4.6

TT?

4.9

4.7

4.7

5.8

5.8

12

~?.4 20

7.2

7.2

7.0

6.6

6.1

5.8

5.8

5.8

5.8

5.7

5.7

5.7

5.5

5.4

5.2

192.3

6.41

381

May

5.1

5.1

5.4

5.1

5.0

5.0

5.0

5.0

5.2

5.2

5.2

5.8

5.7

6.1

B7T

4.9

575

5.1

5.1

5.5

5.7

5.9

5.5

5.5

5.5

5.8

5.9

5.8

5.4

5.7

5.5

167.3

5.40

332

June

5.8

6.5

B75

5.9

5.4

4.7

4.5

4.0

3.8

3.7

3.7

3.4

3.4

3.4

3.4

3.3 375"

3.5

3.5

3.6

3.9

3.9

3.9

3.9

4.2

3.6

3.6

3.7

3.7

3.5

123.2

4.11

244

July

3.4

371

3.3

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.2

2.8

2.8

3.0

3.1

3.0

3.0

2.8

2.6

277

2.7

2.7

2.7

2.7

2.8

2.9

2.9

2.9

2.9

3.1

3.1

92.2

2.97

183

Aug.

3.3

3.5

3.3

3.3

3.2

3.1

3.1

3.0

2.8

2.8

2.8

2.8

2.7

2.7

2.6

2.8

2.8

2.9

3.0

3.2

3.6

3.3

3.1

3.0

3.6

3.9

377

3.0

3.2

3.0

2.9

96.0

3.10

190

Sept.

2.9

3.0

3.1

3.2

3.3

3.0

3.6

3.7

4.3

378

3.7

3.8

3.6

3.9

4.0

4.0

4.0

3.4

3.0

2.9

2.9

3.0

3.0

2.8

2.6

2.4

27T

2.6

2.7

2.6

97.2

3.24

193

Calendar year 1955: Max 106 Min 3.3 Mean 6.10 Ac -ft 4,420

Water year 1955-56: Max 74 Mln 2.4 Mean 5.17 Ac-ft 3,750
SANTA MARGARITA RIVER BASIN 41

Santa Margarita River near Fallbrook, Calif.

Location. Lat 33°25'54", long 117°15'44", in NE^SE^NE^ sec. 14, T. 9 S., R. 4 W., on right 

bank 180 ft upstream from Be Luz Road, 1.3 miles northwest of Pallbrook, and 1.9 miles 

downstream from Sandia Canyon. Prior to Oct. 1, 1955, at site 1.7 miles upstream.

Records available. November 1924 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 280 ft (from topographic map). Prior to 

Oct. 1, 1955, at site 1.7 miles upstream at different datum. Records equivalent except those for extreme low flow.

Extremes. Maximum discharge during year, 314 cfs Jan. 27 (gage height, 4.10 ft), from 

rating curve extended above 50 cfs on basis of measurement made at former site; no flow 

Oct. 1-3, Oct. 29 to Nov. 2, Nov. 4-13, June 7 to Sept. 30.

1924-56: Maximum discharge, 33,100 cfs Feb. 16, 1927 (gage height, 15.6 ft, site 

and datum then in use), by slope-area method; no flow at times during 1955-56.

Remarks. Records good except those above 50 cfs, which are fair. Discharge measurements 

or observations at no flow generally made twice a month. Plow partly regulated by 

Vail Reservoir (capacity, 49 ,370 acre-ft) beginning in November 1948. Several small 

diversions above station for irrigation. The Pallbrook Public Utility District pumped 

1,737 acre-ft of water from a well in the stream bed 2.1 miles upstream from the station during the water year.

Cooperation. Two discharge measurements furnished by Santa Margarita Ranch (U. S. Navy) and 

Pauba Ranch.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Z.I

2.2

2.3

2.4

2.5

0

.5 

3.2

7.5

14

2.6 

2.8 

3.1 

3.6

103

200

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oot.

0

0

0

.3

_.!_

.7

.7

.5

.4

.2

.1

.1

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

0

0

0

5.8

0.19

12

Nov.

0

7J

.1

0

0

0

0

0

0

0

0

0

0

.3

2.6

3.6

4.0

L£

4.0

1.9

1.9

2.2

2.2

2.2

1.9

1.9

1.9

1.9

2.2

2.2

41.4

1.38

82

Dec.

2.6

TTo

3.6

3.6

3.6

3.6

5.2

4.8

4.4

3.6

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.2

3.2

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.2

2.6

100.5

3.24

199

Jan.

2.6

2.6

2.2

1.9

1.6

1.9

2.2

2.2

2.2

1.9

1.9

1.9

1.9

1.9

1.9

1.6

1.4

1.4

1.1

T7I

1.4

1.6

1.9

2.9

3.6

29

197

58

24

17

14

387.8

12.5

769

Feb.

14

To

8.0

7.0

6.5

6.0

6.0

6.0

5.6

5.2

5.2

.0

.8

.8

.4

.0

.0

.0

3.6

3.2

3.2

? c - Q y

3.6

5.6

6.0

5.6

5.2

4.8

4.4

157.6

5.43

313

Mar.

4.8

4.4

4.0

2.9

2.9

4.0

5.6

O

2.6

2.6

2.6

2.6

2.9

2.9

2.9

2.2

2.2

1.6

1.4

1.1

.9

.9

.9

.7

.7

.7

.7

.7

.5

.4

_£

66.7

2.15

132

Apr.

0.4

372

.9

.7

.5

.5

.4

.4

1.1

.5

.9

1.6

5.2

17

17

10

9.1

7.0

3.6

4.4

2.9

1.9

1.9

1.9

1.9

1.9

3.2

2.2

1.6

1.1

104.9

3.50

208

May

0.9

.7

1*4.

1.4

.9

.7

.5

.4

.5

.5

.7

.5

.4

.4

.4

.4

.4

.4

*" '£

.2

.2

.2

.4

.5

.5

.4

.4

1.4

1.1

.5

.4

18.1

0.58

36

June

0.2

TT

.1

.1

.1

.1

0

(5

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.7

0.02

1.4

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 193 Mln 0 Mean 3.98 Ac-ft 2,880

Water year 1955-56: Max 197 Mln 0 Mean 2.41 Ac-ft 1,750
42 SANTA MARGARITA RIVER BASIN 

O'Neill ditch near Ysidora, Calif.

Location. Lat 33 0 19'40", long 117 0 19'45", on right bank half a mile upstream from point

 of discharge into O'Neill Reservoir and 6 miles northeast of Ysidora, San Diego County.

Records available. October 1930 to September 1956.

Gage.--Water-stage recorder and 3-foot Parshall flume. Altitude of gage is 120 ft (from 

topographic map). Prior to October 1935, for periods of low flow, at site half a mile 

downstream at different datum. October 1935 to Nov. 21, 1955, at present site at different datum.

Average discharge. 26 years, 3.03 cfs (2,190 acre-ft per year).

Extremes. 1930-56; Maximum daily discharge, 35 cfs May 24, 1937; no flow during parts 

of each year.

Remarks. Records good. Discharge measurements or observations of no flow generally made

 felly, except Sundays, Ditch diverts water from left side of Santa Margarita River 

about 6 miles upstream from station on Santa Margarita River at Ysidora and discharges 

into O'Neill Lake. O'Neill Lake is used by the U. S. Navy for amphibious training.

Cooperation.--Sage-height record and 25 discharge measurements furnished by Santa Margarita Ranch (U.S. Navy) and Pauba Ranch.

Discharge, in cubic feet per second, water year October 195S to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

8.7

14 7J

0

1.7

4.3

28.7

0.93

57

Feb.

0

3.1 -5.6 11

8.5

5.0

0

0

0

4.2

6.4

6.1

5.5

5.4

5.4

4.9

4.4

4.4

4.3

4.0

3.8

3.6

3.8

5.2

6.4

6.7

6.3

5.7

5.2

144.9

5.00

287

Mar.

5 1 4"78~

4.7

4.6

1.5

00"

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

20.7

0.67

41

Apr.

0

0

0

Calendar year 1955: Max 25 Kf.nO Mean 2.64

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

O

Sept.

0

0

0

Ac-ft 1,910

Water year 1955-56: Max 14 Min 0 Mean 0.53 Ac-ft 3S5

Santa Margarita River at Ysidora, Calif.

Location. Lat 33° 14 '38", long 117°22'56", in NEisE^SEi sec. 3, T. 11 S. , R. 5 E. , on 

right bank 1 mile downstream from Ysidora and about 2.5 miles (revised) upstream from 

mouth.

Drainage area. 740 sq mi.

Records available . February 1923 to September 1929, October 1930 to September 1956.

Gage . --Water-stage recorder. Altitude of gage is 10 ft, revised (from topographic map).

"Prior to Feb. 16, 1927, at about same site at different datum (destroyed by flood). 

Feb. 16, 1927, to Feb. 1, 1931, no gage in operation; records based on discharge measurements. Feb. 2, 1931, to Nov. 27, 1935, at same site at datum 1.00 ft higher.

Average discharge. 8 years (1948-56), 9.80 cfs (7,090 acre-ft per year).

Extremes. No flow during year.

 I9S3-29, 1930-56: Maximum discharge, 33,600 cfs Feb. 16, 1927, on basis of slopearea determination of peak flow; no flow during all or part of most years.

Remarks. No flow since May 13, 1954. Observations of no flow generally made daily except 

Sundays . Diversions above station for irrigation on Santa Margarita Ranch and Pauba 

Ranch. (See above station for records of O'Neill ditch near Ysidora.) Flow partly 

regulated by Vail Reservoir (see p. 38) beginning in November 1948. "Average discharge" 

represents flow to ocean during period of record, regardless of upstream development.

Cooperation. Gage -height record and almost daily observation of no flow furnished by 

Santa Margarita Ranch (U. S. Navy) and Pauba Ranch.
SAN JUAN CREEK BASIN 43

San Juan Creek near San Juan Capistrano, Calif.

Location (revised) . Lat 33°31'08", long 117°37'27", in NE^NE&SE^ sec. 32, T. 7 S., R. 

7 W., on right pier of bridge on State Highway 74, 2.5 miles northeast of San Juan 

Capistrano.

Drainage area. 110 sq mi.

Records available. October 1928 to September 1956. Combined records of creek and diversion October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 150 ft (from topographic map). Prior to 

Feb. 28, 1934, at site 2| miles downstream at different datum. Feb. 28, 1934, to 

Dec. 10, 1938, at present site at different datum. Dec. 11, 1938, to Dec. 17, 1941, at 

present site at datum 2.00 ft higher.

Average discharge. 28 years, 13.0 cfs (9,410 acre-ft per year); median of yearly mean discharges, 3.2 cfs (2,300 acre-ft per year).

Extremes. Maximum discharge during year, 3,750 cfs Jan. 27 (gage height, 4.80 ft); minimum daily, 0.2 cfs Nov. 10, June 26, June 28 to July 4, July 14, 18-21.

1929-56: Maximum discharge, 13,000 cfs Mar. 2, 1938, by slope-area method, determined by Corps of Engineers; no flow at times during most years.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made weekly. For records of combined discharge of 

creek and canal, see following page.

Cooperation. Fifty-six discharge measurements furnished by Orange County Flood Control 

 District.

Rating tables, water year 1955-56 (gage height, in feet, and discharge.

In cubic feet per second)

(Shifting-control method used Oct. 1-4, May 8, 9, 27-31, 

July 27 to Sept. 30)

Oct. 1 to Jan. 26 Jan. 27 to Sept. 30

1.1

1.2

1.3

1.4

1.5

0.2

.4

.9

1.7

3.0

1.7 8.0

1.8 

2.0 

2.2 

2.4 

2.7 

3.0 

3.3

12

25

46

80

170

305

515

1.5

1.6

1.7

1.8

1.9

2.0

2.1

O.I 

.4

1.2 

2.7 

5.4 

9.6

16

2.2

2.3 

2.5 

2.8 

3.1 

3.5 

4.0

25

37

73

163

315

665

1.43O

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

73

.3

.3

.3

.3

.3

.3

.3

.4

.4

.3

.3

.3

.3

.3

.3

.3

10.8

0.35

21

Nov.

0.3

.3

.3

.3

.3

.4

.4

.3

.3

.2

.3

.3

.3

73

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

9.6

0.32

19

Dec.

0.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.JL

.3

.3

.3

.3

.3

.3

12.2

O.39

24

Jan.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.4

.6

1.1

1.3

1.2

2.7

504

1,420

64

315

7.9

7.5

2,031.8

65.5

4,030

Feb.

7.3

6.5

6.2

5.8

5.8

5.4

5.4

5.1

5.1

5.1

5.1

5.1

5.1

4.8

4.1

3.4

3.4

3.2

3.2

3.4

4.2

4.5

3.9

3.6

3.6

3.6

3.6

131.9

4.55

262

Mar.

3.J3

3.6

3.6

3.6

3.6

3.2

2.2

2.2

2.2

2.2

2.3

2.2

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.4

a. 7

.6

76

.6

63.6

2.05

126

Apr.

0.6

.5

.5

.5

.ii

.4

.4

.4

.5

.5

1.1

2.7

5.8

3.6

2.5

3.1

3.4

3.2

2.9

2.7

2.7

2.5

2.5

2.5

2.7

2.9

2.9

2.9

2.9

2.7

62.9

2.10

125

May

2.5

2.7

2.7

2.3

2.3

2.0

2.0

2.0

2.3

2.2

2.2

2.2

2.2

2.0

2.0

1.8

2.0

1.8

1.8

1.8

1.8

2.0

1.6

.5

.5

.5

.5

.5

.5

.5

.5

52-.-T

1.68

1O4

June

0.6

.6

.6

.6

.6

.5

.5

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

a. 4

a. 3

a. 3

tl

.2

AZ

^

15.0

O.5O

30

July

0.2J^g'.z

.2

.4

.4

.5

.5

.5

.6

.6

.5

.3

.2

.3

.3

.4

.2

.2

.2

.2

.4

.4

.5

.5

.5

.3

.4

.4

.5

.5

11.5

0.37

23

Aug.

0.5

.4

.3

73

.3

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

76

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

.5

15.7

O.51

31

Sept.

0.5

.5

.5

.5

.5

.4

71

.4

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.5

.5

.5

.5

.5

.5

.6

14.9

0.50

30

Calendar year 1955: Max 8.8 Mln O.2 Mean 1.18 Ac -ft 855

Water year 1955-56: Max 1,42O Mln O.2 Mean 6.65 Ac-ft 4,8EO

Peak discharge (base. 20 cfs). Jan. 27 (3:3O a.m.) 3,750 cfs (4.8O ft).

a No gage-height record; discharge Interpolated or estimated on basis of probable recession.
:4 SAN JUAN CREEK BASIN

San Juan Creek near San Juan Capistrano, Calif.--Continued

Combined discharge, In cubic feet per second, of San Juan Creek and Capistrano Water Co.'s canal 

near San Juan Capistrano, Calif., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25 

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.4

TTi" 1.3

1.4

1.5

1.5

1.6

1.6

1.6

1.6

1.7

1.9

T7T

1.6

1.5

1.6

1.5

1.5

1.6

1.5

1.5

1.7

1.8

1.8

1*8 

1.8 

1.8

1.7

1.5

1.5

49.5

1.60

98

Nov.

1.5

1.6

1.5

1.4

1.5

1.6

1.6

1.5

1.3

1.1

T72

1.2

2.3

T75

2.0

2.2

2.1

2.0

2.0

2.1

2.1

2.1

2.1

2.1

2.1 

2.0 

2.2

2.1

2.1

54.0

1.80

107

Dee.

2.1

 27T 2.0

2.0

2.0

2.0

2.0

2.1

2.2

2.2

2.3

2.3

2.3

2.2

2.2

2.1

2.1

2.1

2.2

2.2

2.1

2.1

2.1

2.0

2.1

2.1 

2.1

2.1

2.1

2.1

65.7

2.12

130

Jan.

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.2

2.3

2.3

2.3

2.2

2.2

2.2

2.2

2.1

2.1

2.0

1.9

T79

2.1

2.0

3.6

505 

1,420 

64

15

7.9

7.5

2,073.9

66.9

4,110

Feb.

7.3

675 6'.2

5.8

5.8

5.4

5.4

5.1

5.1

5.1

5.1

5.1

4.8

4.2

3.7

3.6

5.4

3 '.4

3.4

3.6

4.5

4.8

4.2

3.8 

3.8

3.8

135.2

4.66

268

Mar.

3.8

3.8

3.8

3.8

3.8

3.8

3.3

3.5

3.5 

3.6

3.7

3.6

3.2

3.2

3.2

3.1

3.1

3.1

3.1

3.2

3.2

3.2

3.2

3.2

3.1

3.1 

3.0

2.9

279

2.9

103.0

3.32

204

Apr.

3.0

2.8

2.8

2.7

2.6

2.7

2.7

2.8

2.9 

3.1

3.1

4.7

8.3

579

4.6

4.3

3.8

3.6

3.2

3.0

3.0

2.8

2.8

2.7

2.9

3.1 

3.1

3.1

3.2

102.4

3.41

203

May

3.Z

3.4

3.4

2.9

3.0

2.7

2.6

2.6

3.0

2.8

2.9

2.9

2.9

2.6

2.6

2.4

27T

2.5

2.5

2.4

2.4

2.6

2.7

2.6

2.6

2.6 

2.6

2.6

2.5

2.4

84.2

2.72

167

June

"274 2.4

2.4

2.4

2.4

2.2

2.2

2.3

2.3 

2.2

2.2

2.1

2.1

2.1

2.1

2.1

2.3

2.3

2.3

2.2

2.1

2.0

1.9

1.8

1.8

1.7 

1.7 

1.5

1.5

1.5

62.5

2.08

124

July

1.5

1.6

1.7

1.6

1.9

1.8

1.9

1.9

1.9 

2.0

2.1

T79

1.6

1.5

1.6

1.6

1.8

1.5

1.4

1.5

1.3

1.6

1.6

1.8

1.8

1.4 

1.4

1.4

1.5

1.6

Bl'.l

1.65

101

Aug.

1.6

1.5

1.4

1.4

1.4

1.5

1.5

1.6

1.6 

1.3

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.6

1.7

1.7

1.6

1.5

1.6

1.7

1.9 

2.0

 270 2.1

2.0

50.3

1.62

100

Sept.

1.9

2.0

2.0

2.0

1.9

1.6

1.6

1.5

1.5 

1.4

1.4

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.7

1.7

1.7

1.7

1.5

1.5

1.4 

1.4 

1.4

1.4

1.5

492

1.64

98

Calendar year 1955: Max 9.1 Mln 0.9 Mean 2.49 Ac-ft 1,800

Water year 1955-56: Max 1,420 Mln 1.1 Mean 7.87 Ac-ft 5,710
SAN JUAN CREEK BASIN 45

Trabuco Creek near San Juan Capistrano, Calif.

Location. --Lat 33°31'36", long 117°40'08", in NE^NEiNW^ sec. 36, T. 7 S., R. 8 W., on

downstream side of right pier of bridge on U. S. .Highway 101, 1.5 miles north of San

Juan Capistrano. 

Drainage area. 36.5 sq mi.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 180 ft (from topographic map). 

Average discharge. 26 years, 5.16 cfs (3,740 acre-ft per year); median of yearly mean

discharges, 0.8 cfs (580 acre-ft per year). 

Extremes . Maximum discharge during year, 745 cfs Jan. 27 (gage height, 3.35 ft); no flow

during most of year.

1930-56: Maximum discharge, 9,240 cfs Feb. 6, 1937; no flow during part of each

year. 

Cooperation. Records furnished by Orange County Flood Control District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

W

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

o .2

0

0

0.3

0.01

0.6

Nov.

0

0

0

O

.1

0

0

0

0

o

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

Jan.

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.9

230

417

37

0

0

0

685.9

22.1

1,360

Feb.

0

0

0

Mar.

0

0

o

o

0

0

0

0

0

0

o

o

0

0

0

0

0

0

0

 1

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

Apr.

0

0

0

May

0

0

0

June

0.1

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

July

0

0

O

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max Z.6 Min 0 Mean 0.09 Ao-ft 65 

Water year 1955-56: Max 417 Min 0 Mean 1.88 Ao-ft 1,360

ALISO CREEK BASIN

Aliso Creek at El Toro, Calif.

Location.--Lat 33°37'15", long 117°41'20", in Canada de los Alisos Grant, on left abutment of Second Street Bridge at El Toro, Orange County.

Drainage area. 8.5 sq mi, approximately.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 440 ft (from topographic map).

Average discharge.--26 years, 0.76 cfs (550 acre-ft per year); median of yearly mean discharges, 0.3 cfs (220 acre-ft per year).

Extremes. Maximum discharge during year, 506 cfs Jan. 26 (gage height, 7.60 ft); no flow 

during most of year.

1930-56: Maximum discharge, 1,950 cfs Feb. 6, 1937; no flow most of each year.

Cooperation. Records furnished by Orange County Flood Control District.

Revisions"Twater years). WSP 961: 1941JM).

Discharge, in cubic feet per second, water year October 1955 to September 1956 

Jan. 25....

26.

0.1

145

Jan. 27......... 69

28......... 1.1

Note. Flow occurred only on days listed above.

Month

Water year 1955-56 ........

Cfs-days

-

Maximum

145

145

Minimum

0

Mean

6.94

.59

Runoff in 

acre-feet

427

6.1

427
46 PETERS CANYON WASH BASIN

San Diego Creek near Irvine, Calif.

Location. Lat 33°40 I 20", long 117°47'10", in San Joaquin Grant, on left bank 200 ft downstream from Jeffrey Road Bridge and 1.5 miles west of Irvine, Orange County.

Records available. October 1949 to September'1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 102.86 ft above mean 

sea level (levels by Orange County Flood Control District).

Average discharge. 7 years, 1.68 cfs (1,220 acre-ft per year).

Extremes. Maximum discharge during year, 914 cfs Jan. 26 (gage height, 3.93 ft), from 

rating curve extended above 180 cfs on basis of slope-area determination of peak flow 

at gage height 7.70 ft; no flow during most of year.

1949-56: Maximum discharge, 4,040 cfs Jan. 18, 1952 (gage height, 7.70 ft), from 

rating curve extended above 1,000 cfs on basis of slope-area determination of peak flow; 

no flow during most of each year.

Remarks. Records good.

Cooperation. Four discharge measurements furnished by Orange County Flood Control District.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Jan. 26, 27)

1.0

1.1

1.2

1.3

1.4

1.5

.2

1.5

4.4

9.2

16

1.7

1.8 

2.1 

2.6

26

39

56

128

320

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(»)

0

0

O

Nov.

0

 o

o

o

0

0

0

0

0

0

0

0

0

.4

0

o

o

o

o

o

o

0

o

0

0

0

o

0

0

*0.

0.4

0.01

0.8

Dec.

0

O

O

0

o

0

o

0

o

0

o

0

o

o

0

0

o

o

o

0

.2

o

0

o

0

0

0

.1

.2

»0

o

0.5

O.O2

1.0

Jan.

0

0

0

O

O

0

O

O

O

0

O

0

O

O

O

O

O

O

O

o

o

0

o

0

56

*297

*98

*O

O

0

*1.4

452.4

14.6

897

Feb.

(»)

-

O

O

0

Mar.

(»)

O

o

0

Apr.

-50

0

0

0

0

O

o

o

0

o

29,

15

O

o

o

o

o

o

0

o

0

o

0

o

o

*o

o

0

0

44.0

1.47

87

May

0

3

o

o

0

o

o

o

.4

O

0

0

0

O

o

o

o

o

o

o

o

0

0

o

0

0

0

0

*0

o

o

O.4

O.O1

0.8

June

(»)

o

0

0

July

(*)

0

O

0

Aug.

(»)

0

O

o

Sept.

o

o

o

Calendar year 1955: Max 49 Min o Mean O.42 Ac-ft 3O6

Water -i/cf year yca.1- 1955-56: j.300 .jo. Max RUA. 297 t.y i Min ru.iio uMean nceui1.36 J. .ODAc-ftU j. L> 987 yo i

Peak discharge (base, 1OO ofs). Jan. 26 (7:30 a.m.) 914 cfs (3.93 ft); Apr. 12 (1O p.m.) 195 cfs 

(2.3O ' . _^O vJV ft) A f>VL,/ ..

* Discharge measurement or observation'of no flow made on this day.
SANTA ANA RIVER BASIN 47

Big Bear Lake near Big Bear Lake, Calif.

Location. Lat 34°14'20", long 116 0 58'50", in SW£ see. 22, T. 2 N., R. 1 W., at Big Bear

 Lake Dam on Bear Creek, 4 miles west of town of Big Bear Lake and 7? miles upstream 

from mouth.

Drainage area. 38 sq mi, approximately.

Records available. October 1950 to September 1956 in reports of Geological Survey. Peb-

 ruary 1884 to September 1950 in files of Bear Valley Mutual Water Co.

Gage. Staff gage read once daily. Datum of gage is 6,670.9 ft above mean sea level 

"(levels by Bear Valley Mutual Water Co.). Prior to 1912, staff gage at old dam 200 ft 

upstream at same datum (spillway at gage height 52.4 ft).

Extremes. Maximum contents during year, 12,428 acre-ft Feb. 29; minimum, 2,840 acre-ft 

Sept. 30.

1884-1956: Maximum gage height observed, 72.4 ft Feb. 1, 1916, Apr. 1. 1917, 

Apr. 1, 1922, Apr. 1, 1923, June 1, 1938, May 1, 1939 (reservoir spilling); no contents 

October, November 1898, August to November 1899, October, November 1904.

Remarks Lake is formed by multiple-arch concrete dam, completed in 1912, replacing ex-

 isting lower dam built in 1884; storage began in spring of 1884. Capacity, 72,200 

acre-ft at elevation 6,743.2 ft (top of dam). No dead storage. Water used for irrigation only.

Cooperation. Record of contents furnished by Bear Valley Mutual Water Co.

Month-end contents, water year October 1955 to September 1956

Month

Calendar year 1955. ......

Apr. 30....................

Contents 

(acre-feet)

-

Change In contents 

(acre-feet)

_

-1 341

-5,507

+1 239

+1 134
48 SANTA ANA RIVER BASIN

Santa Ana River near Mentone, Calif.

Location. Lat 34°06'40", long 117°05'54", in NWiNE^SW^ sec. 4 , T. 1 S. , R. 2 W. , on left

bank near mouth of canyon, 1.8 miles upstream from Mill Creek and 3.5 miles northeast

of Mentone.

Drainage area.--202 sq mi, including area tributary to Baldwin Lake at head of Bear Valley. 

Records available. --July 1896 to September 1956. 

Gage . Water- stage recorder. Datum of gage is 1,984.28 ft above mean sea level, datum of

1929. Prior to Oct. 1, 1914, staff gages at various sites within 1,000 ft of point

1? miles upstream at various datums. Oct. 1, 1914, to Jan. 17, 1916, staff gage at

site 10 ft upstream at different datum. Jan. 18, 1916, to Sept. 2, 1917, staff gage at

present site and datum. 

Average discharge. 42 years (1914-56), 32.7 cfs (23,700 acre-ft per year); median of

yearly mean discharges, 9.9 cfs (7,200 acre-ft per year). Average combined discharge

of Santa Ana River and canal, 42 years (1914-56), 87.4 cfs (63,300 acre-ft per year);

median of yearly mean combined discharges, 70 cfs (50,700 acre-ft per year). 

Extremes. --Maximum discharge during year, 1,200 cfs'Jan. 26 (gage height, 8.17 ft), from

rating curve extended above 510 cfs by logarithmic plotting; no flow during several

months .

1896-1956: Maximum discharge, 52,300 cfs Mar. 2, 1938 (gage height, 14.3 ft), on

basis of slope-area determination of peak flow; no flow at times in some years. 

Remarks . Records good. Discharge measurements generally made three times or more a month.

Flow partly regulated by Big Bear Lake (see preceding page). For records of combined

discharge of Santa Ana River and Southern California Edison Co.'s canal below powerplant

No. 2, which diverts above station, see following page. Bear Valley Mutual Water Co.

pumped 503 acre-ft into canal below canal gage. Prior to Oct. 1, 1952, pumped water

entered the canal above this gage. 

Cooperation . Eight discharge measurements on Southern California Edison Co.'s canal below

powerplant No. 2 furnished by that agency in connection with a Federal Power Commission

project. 

Revisions (water years) . WSP 931: 1940. WSP 1091: Drainage area.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, In cubic feet per second)

5.0

5.1

5.2

5.3

5.4

5.5 11

5.7 

6.0 

6.4 

6.8 

7.2 

7.5

148

280

470

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

n

2.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.1

0.07

4.2

Jan.

"uo

0

0

0

0

o

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

422

626

182

70 

45

3 2

1,348.2

43.5

2,670

Feb.

1.2

.9

.6

.5

.5

.5

.4

.4

.4

.4

.3

73

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.7

1.8

1.2

.8

.8

.7

.7

16.8

0.58

33

Mar.

0.676"

.6

.6

.6

.6

.7

.7

.7

.7

.9

1.0

1.0

.9

.8

.8

.8

.7

.7

.7

.7

.7

.7

.7

.8

.8

.7

.7

.6

.6

.7

22.4

0.72

44

Apr.

0.8

.8

.8

.6

.5

.5

.5

.5

.5

.6

.6

.9

1.0

.9

.8

.7

.8

.8

.7

.6

.4

.4

.4

.4

.4

.5

.6

.4

.4

.4

18.2

0.61

36

May

0.3

.3

.3

.3

.3

.3

.3

.3

.4

_^L

.4

.4

.4

.3

.3

.3

.3

.2

.2

.3

.3

.2

.3

.3

.3

.3

.2

.3

.2

.2

.2

9.5

0.31

19

June

0.2

. 2

.1

.1

.1

.2

.1

.1

.1

0_

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.2

0.04

2.4

July

0

0

0

Aug.

0

0

0

Sept.

0

0

O

Calendar year 1955: Max 35 Mln o Mean 1.74 Ac-ft 1,260

Water year 1955-56: Max 626 Mln o Mean 3.88 Ae-ft 2,810
SANTA ANA RIVER BASIN 49 

Santa Ana River near Mentone, Calif. Continued

Combined discharge, In cubic feet per second, of Santa Ana River and canal near Mentone, Calif., 

water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

37

38

44

44

il

41

37

37

37

37

37

36

38

42

42

41

36

36

37

38

39

34

31

30

3T

31

31

31

30 

30

32

1,130

36.5

2,240

Nov.

37

37

35

31

31

31

31

31

31

32

34

36

36

40

27

25

25

24

29

29

26

25

25

24

24

24

24 

24

876

29.2

1,740

Dec.

26

362?9~

28

28

27

27

26

24

24

24

24

24

24

24

24

24

24

24

24

25

25

25

24

24

24

25

25

24 

24

24

784

25.3

1,560

Jan.

2424"

24

25

24

24

24

24

24

24

24

24

24

24

24

24

24

24

24

25

25

25

25

25

29

456

638

TeT

70 

45

53

2,055

66.3

4,08O

Feb.

44

39

39

38

38

36

35

34

33

33

32

32

32

31

31

31

2830"

30

29

29

29

39

46

3?

37

35

34

34

997

34.4

1,980

Mar.

33

33

33

33

33

33

32

33

32

32

32

31

35

34

33

33

33

33

33

33

33

32

32

32

32

32

32

31

31

31

31

1,004

32.4

1,990

Apr.

34

34

33

33

32

32

30

30

19" 28

29

30

35

33

31

33

31

30

29

29

28

28

28

28

28

32

38

34

33

32

934

31.1

1,850

May

32

31

32

31

31

30

3O

30

38

.39

34

34

32

30

28

27

26

26

26

35

36

32

31

32

33

35

35

34

31

30 

29

980

31.6

1,940

June

28

28

28

28

28

28

27

27

32

33

36

38

38

40

41

41

39

35

34

34

34

34

33

37

38

38

38

39

40

42

1,036

34.5

2,050

July

42

44

43

43

42

42

35

32

32

38

41

43

44

45

44

41

42

39

36

39

40

41

42

42

42

38

38

40

39

37

36

1,242

40.1

2,460

Aug.

41

42

42

42

42

42

41

39

39

39

38

38

41

42

42

44

48

49

50

48

45

44

42

34

34

37

39

37

33

1,299

41.9

2,580

Sept.

38

38

38

39

39

39

39

39

38

38

38

38

38

38

38

38

38

39

45

±1

47

47

47

45

42

41

42

43

43

42

1,221

40.7

2,420

Calendar year 1955: Max 91 Min 24 Mean 38.2 Ac-ft 27,630

Water year 1955-56: Max 638 Min 24 Mean 37.0 Ao-ft 26,890
50 SANTA ANA RIVER BASIN

Mill Creek near Yucaipa, Calif.

Location. Lat 34°05'27", long 117°02'12", in NW£NE£NE£ sec. 13, T. 1 S., R. 2 W., on 

left bank 50 ft downstream from bridge on State Highway 190-D, 3.9 miles north of 

Yucaipa, and 5.3 miles upstream from mouth.

Drainage area. 39.9 sq mi.

Records available. January 1919 to September 1938, October 1947 to September 1956. 

Prior to October 1954, published as "near Craftonville."

Sage. Water-stage recorder. Datum of gage is 2,916,36 ft above mean sea level (Southern 

California Edison Co. benchmark). Prior to August 1926, at site 100 ft upstream at 

different daturas. August 1926 to Mar. 2, 1938, at site 500 ft downstream at different 

datum (destroyed by flood).

Average discharge. 28 years, 11.6 cfs (8,400 acre-ft per year); median of yearly mean 

discharges, 2.2 cfs (1,600 acre-ft per year). Average combined discharge, creek and 

canals, 28 years, 33.1 cfs (23,960 acre-ft per year); median of combined yearly mean 

discharges, 24 cfs (17,400 acre-ft per year).

Extremes. Maximum discharge during year, 193 cfs Jan. 27 (gage height, 8.78 ft); no flow 

Jan. 15-25.

1919-38, 1947-56: Maximum discharge, 18,100 cfs Mar. 2, 1938, result of slopearea determination of peak flow; no flow at times in some years.

Remarks. Records fair except those for periods of no gage-height record, which are poor. 

Discharge measurements generally made 3 or 4 times a month. Mill Creek power canals 

Nos. 1,2, and 3 divert from points 100 ft, 3 miles, and 6 miles above station, respectively. Combined flow of Mill Creek and Mill Creek power canals Nos. 1,2, and 

3 is given in table on following page.

Cooperation. Water-stage-recorder chart and 10 discharge measurements for Mill Creek 

power canals 2 and 3 furnished by Southern California Edison Co. in connection with 

Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.1

T

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.1

.1

.1

.1

4.5

0.15

8.9

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

2

TT

.1 

.1

.1

.1

.1

3.1

0.10

6.1

Dec.

0.2

.3

.2

.2

.2

.3

.4

.3

.2

.2

.2

.2

a. 2

a. 2

.2

.2

.3

.3

.3

.2

~7Tti

.1

a.l

a.l

a. 2 

.2

.2

.2

.2

*

6.5

0.21

13

Jan.

0.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

2.

0

0

0

0

0

0

0

0

0

0

II

a5

a2

al

a. 3

124.8

4.03

248

Feb.

aO.3

a. 3

al

al

iij6

1.2

.3

.3

.3

.1

a.l

a.l

a.l

.1

.1

.1

.1

.1

.1

.1

.1

.8

.9

.4

.3 

.2

a. 3

.4

10.9

0.38

22

Mar.

"~ 0.4rs"

.3

.3

.4

.4

.3

.2

1 1

. TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2 

.1

.1

.1

.1

.1

5.4

0.17

11

Apr. 

0.1

Tz

,2

.2

.2

.2

.4

.3

.1

.1

,1

.1

.7

77

a. 4

a. 3

a. 3

a. 3

a. 3

a. 3

a. 2

a. 2

a. 2

a. 2

.2

.2 

.2

.2

.2

.2

7.5

0.25

15

May

0.2

.2

.2

.2

ji.

.1

.1

.1

.2

.3

.4

.4

.2

.3

.1

.1

.1

.1

.2

.5

.5

.5

.5

76"

.6 

.5

.5

.4

.4

.3

9.5

0.31

19

June

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

_4

74

.4

.4

.4

.4

.4

.4

.4

.4

.4

.2

.1 

.1

.1

.1

.1

7.9

0.26

16

July

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

3.1

0.10

6.1

Aug.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

3.1

0.10

6.1

Sept.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

3.0

0.10

6.0

Calendar year 1955: Max 25 Mln 0 Mean 0.49 Ac-ft 356

Water year 1955-56: Max 59 Mln o Mean 0.52 Ac-ft 377

discharge (base. 50 cfsK Jan. 27 (2 a.m.) 193 cfs (8.78 ft).

a No gage-height record; discharge Interpolated or estimated on basis of 5 discharge measur 

recession curves, and records for power canals.

ents,
SANTA ANA RIVER BASIN 51

Mill Creek near Yucaipa, Calif. Continued

Combined discharge, In cubic feet per second, of Mill Creek and canals near Yucaipa, Calif., 

water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ao-ft

Oct.

14 

14

14

14

14

14

13

14

14

14

14

13

13

12

TS

13

13

13

13

13

13

13

13

13

13

13

13

13

13 

13

13

411

13.3

815

Nov.

13 

13

13

13

13

13

12

13

12

12

13

13

13

14

14

14

14

14

14

14

14

11

11

To" 10

10

10

10

13

i§

378

12.6

750

Dec.

15 

18

T5

15

15

15

16

15

14

14

14

14

14

14

14

14

14

14

14

14

14

14

15

14

14

14

15

11

T4

14

14

445

14.4

883

Jan.

14 

14

14

14

14

14

14

14

14

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

15

79

72

21

18

16

15

557

18.0

1,100

Feb.

14 

10

TT

12

13

13

15

15

16

16

16

16

16

16

16

16

16

15

15

14

13

13

18

Tf

16

16

16

16

16

432

14.9

857

Mar.

if16

16

i°_

15

15

15

15

15

15

15

15

15

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

447

14.4

887

Apr.

15 

16

15

15

15

14

TF

14

14

15

15

16

17

17

17

16

16

16

16

15

15

15

15

16

16

18

18

16

16 

16

470

15.7

932

May

16 

16

16

16

16

16

16

16

19

T9

17

17

16

16

16

16

15

15

15

16

16

16

16

16

16

16

16

16

15

14

14

496

16.0

984

June

14 

14

14

14

14

14

14

13

13

14

13

13

13

13

13

13

13

13

12

T3

12

12

12

12

12

12

12

12

12 

12

387

12.9

768

July

12

If

12

12

12

11

TI

11

11

11

11

11

11

11

11

11

12

12

11

11

11

11

12

12

12

11

12

11

11 

11

11

352

11.4

698

Aug.

11 

TT

11

11

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

io 9.9

10

10

10

10 

10

10

313.9

10.1

623j

Sept.

10

To

10

10

9.8

9.8

9.2

973

9.8

9.7

9.7

9.7

9.7

9.7

9.5

9.5

9.5

9.5

9.5

9.7

9.7

9.5

9.5

9.5

9.5

9.5

9.3

9.3

9.5

9. 3

288.2

9.61

572

Calendar year 1955: Max 48 Mln 10 Mean 17.8 Ao-ft 12,900

Water year 1955-56: Max 79 Mln 9.2 Mean 13.6 Ao-ft 9,870
SANTA ANA RIVER BASIN

Mill Creek near Mentone, Calif.

Location. Lat .34°05'14", long 117°06'46", in NE^SE^NW^- sec. 17, T. 1 S., R. 2 W., on downstream side of right pier of Bear Valley Mutual Water Co.'s pipeline crossing, 0.4 mile 

upstream from mouth and 1.6 miles northeast of Mentone.

Records available. February 1939 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is 1,780 ft (from 

topographic map).

Average discharge. 17 years, 2.74 cfs (1,980 acre-ft per year); median of yearly mean 

discharges, 0.7 cfs (510 acre-ft per year).

Extremes. Maximum discharge during year, 176 cfs Jan. 27 (gage height, 4.77 ft); no flow 

at times each month.

1939-56: Maximum discharge, 1,500 cfs Dec. 23, 1945 (gage height, 6.5 ft), result 

of slope-area determination of peak flow; no flow during parts of each year.

Remarks. Records poor. Discharge measurements or observations of no flow generally made 

two or more times a month. The Zanja and Mill Creek spreading grounds divert most of 

low-water flow above station. Pumpage from wells along stream above station for irrigation affects surface flow at station.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, in cubic feet per second) 

(Shifting-control method used Feb. 24)

2.2

2.3

2.4

2.5

2.6

1.9 

3.3

2.8 

3.0 

3.5 

3.9

7.2

13

35

63

Discharge, in oubio feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Got.

0.2

.1

.1

0

0

0

0

.2

0

0

0

0

.1.1

0

0

.1

.2

.3

71

.1

0

0

0

.1

0

0

0

0

0

0

1.7

0.05

3.4

Nov.

0

0

0

0

0

0

0

0

0

0

0

.1

0

.1

a.l

.1

.2

.1

.1

.1

.4

1.3

a.l

aO

aO

aO

aO

aO

0

.1

2.8

0.09

5.6

Dec.

0.7

2.9

2.0

.4

1.2

.6

.4

0

0

0

0

0

0

0

0

0

.2

.5

.6

.9

1.6

2.3

3.4

4.5

.6

aO

ao

aO

aO

aO

23.9

0.77

47

Jan.

0.1

.1

0

0

.5

.1

.1

.2

.2

0

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

56

63

12

as

a2

al

140.4

4.53

278

Feb.

aO.3

a.l

aO

aO

aO

ao

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.6

2.5

~78 3.6

a. 2

a.l

0

0

8.2

0.28

16

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

.1

.4

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

0

0

0.6

0.02

1.2

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 23 Mln 0 Mean 0.37 Ac-ft 267

Water year 1955-56: Max 63 Mln 0 Mean 0.49 Ac-ft 351

Peak discharge (base. 50 cfs) . Jan. 27 (12:30 a.m.) 176 cfs (4.77 ft).

a No gage-height record; discharge interpolated or estimated on basis of normal recession curves.
SANTA ANA RIVER BASIN 53

Plunge Creek near East Highlands, Calif.

Location. Lat 34 C 07'06", long 117C 08'27", in SW^NE^NE^ sec. 1, T. 1 S., R. 3 W., on left bank 

at mouth of canyon at crossing of North Pork ditch siphon, 1.8 miles northeast of East 

Highlands.

Drainage area. 16.9 sq mi.

Records available.--January 1919 to September 1956; combined records of creek and diversions, March 1951 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is 1,590 ft (from 

topographic map).

Average discharge. 37 years, 5.88 cfs (4,260 acre-ft per year); median of yearly mean discharges, 4.1 cfs (3,000 acre-ft per year). Average combined discharge of creek and 

diversions, 5 years (1951-56), 6.10 cfs (4,420 acre-ft per year).

Extremes. Maximum discharge during year, 1,350 cfs Jan. 27 (gage height, 2.87 ft), from 

rating curve extended above 773 cfs by logarithmic plotting; no flow during several 

months.

1919-56: Maximum discharge, 5,340 cfs Mar. 2, 1938, result of slope-area determination of peak flow; no flow during parts of each year.

1951-56: Minimum combined daily discharge of Plunge Creek and diversion, 0.1 cfs 

on Nov. 4, 1953.

Remarks. Records good except those above 100 cfs and those for periods of no gage-height 

record, which are poor. Discharge measurements generally made twice a month. Diversions for irrigation are made at points 0.5, 1.0, and 2.5 miles above station. Combined 

flow of Plunge Creek and diversions is given on following page.

Rating table, water year 1955-56 (gage height. In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Jan. 26-23, Feb. 29, Mar. 1)

0.1 

.2 

.3 

.4 

.5 

.6 

.7

0

.6 

1.6 

3.0 

4.4 

6.3 

9.2

1.0 

1.2 

1.5 

1.8

15

26

46

110

245

420

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

75

0

0

0

0

0

.5

.8

_.£

.9

.8

.7

.7

.4

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

5.7

0.18

11

Jan.

0

75

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

394 359"

27

12

8.8

7 .6

S08.4

26.1

1,600

Feb.

5.9

5.1

4.8

4.4

4.3

4.1

4.0

3.8

3.5

3.4

34

37J

3.3

3.5

3.5

3.7

3.5

3.5

3.5

3.7

3.5

3.5

5.1

6.8

BTs

4.9

4.6

4.6

4.6

121.2

4.18

240

Mar.

±447T

4.0

3.8

3.7

3.0

2.6

2.0

1.8

1.3

1.2

1.1

1.2

1.0

.8

.9

.9

a. 5

0

75

0

0

0

0

0

0

0

0

0

0

0

38.3

1.24

76

Apr.

0

75

0

0

0

0

0

0

0

0

0

.2

3.9

1.3

a. 2

.1

0

0

0

0

0

0

0

0

.1

1.4

4.2

T^

a. 4

.4

13.5

0.45

27

May

0.2

0

75

0

0

0

0

0

5.8

7.5

4.6

3.0

1.6

.5

.1

.1

.1

.5

0

0

0

0

.1

0

0

0

.1

.2

.1

0

0

24.3

0.78

48

June

H

r(a)

0

0

0

July

Calendar year 1955: Max 24 Mln o Mean 1.14 Ae-ft 826

Water year 1955-56: Max 394 Mln o Mean 2.76 Ac-ft 2,000

a

a

a

a

a

a

a

a

a

a

0

0

0

Aug.

0

0

0

Sept.

0

0

0

a No gage-height record; discharge estimated on basis of weather records and records for nearby

stations .

493801 O -59 - 5
54 SANTA ANA RIVER BASIN

Plunge Creek near East Highlands, Calif. Continued

Combined discharge, In cubic feet per second, of Plunge Creek and diversions 

East Highlands, Calif., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

 %0.6

.6

.6

.6

.6

.6

.6

.5

.6

.6

.6

.5

.6

.6

.6

.5

.5

.6

.6

.6

.6

.6

.5

.5

.5

.6

.6

.6 

.6

.6

17.9

0.58

36

Nov.

^rl

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.7

.7

.7

.7

.7

.6

.7

.7 

.ii

18.9

0.63

37

Dec.

0.8

T7T

1.1

1.4

1.3

1.2

1.2

1.6

1.9

2.0

2.0

1.9

1.8

1.3

1.2

1.2

1.1

1.0

1.0

1.0

1.0

1.0 1.1 1.1

1.0

1.0 1.1

1.2

1.3 

1.2

1.2

39.3

1.87

78

Jan.

1.2

1.2

1.1

T7?

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.2

1.2

1.2

1.2

1.0

1.3

1.3

1.3

1.3

1.2

1.3

1.7

Ul 355

27

12 

8.8

7.6

842.7

27.2

1,670

Feb.

5.9

5.1

4.8

4.4

4.3

4.1

4.0

3.8

3.5

3.4

3.3

373

3.3

3.5

3.5

3.7

3.5

3.5

3.5

3.7

3.5

3.5

5.1

6.8

F75

4.9

4.6

4.6

4.6

121.2

4.18

240

Mar.

44

TTT

4.0

3.8

3.9

4.0

3.7

3.4

3.2

3.4

4.1

3.8

3.7

3.2

2.4

2.4

2.9

3.0

2.4

2.4

2.2

27?

2.5

2.5

2.4

2.4

2.4

2.2

2.2 

2.2

2.4

94.1

3.04

187

Apr.

3.1

3.1

2.9

2.6

2.5

2.3

2.3

2.3

2.3

2.1

2.3

2.9

7.7 375-

4.4

4.3

4.1

3.9

3.6

3.1

3.0

2.7

2.7

2.6

2.5

4.0

6.8

5.3

4.4 

3.9

105.2

3.51

209

May

3.5

3.1

3.0

3.1

3.1

3.1

3.1

3.1

10 -9.9

7.7

6.8

6.2

4.9

4.2

3.8

3.7

3.5

3.4

3.2

3.0

2.9

3.1

3.1

3.4

3.3

3.2

3.3

3.2 

3.0

2.7

126.6

4.08

251

June

2.4

272

2.0

1.9

1.9

1.9

1.8

1.7

1.5

1.5

1.5

1.5

1.5

1.4

1.7

1.6

1.5

1.4

1.4

1.5

1.5

1.4

1.3

1.3

1.2

1.1

i^°-

T7?

1.2 

1.2

46.2

1.54

92

July

1.2

1.3 ITS'

1.1

1.0

1.0

.9

.8

.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.7

.7

.6

.6

.6

.8

.8

.7

.5

.4 

74

.4

24.1

0.78

48

Aug.

0.6

.6

.7

.6

.6

.6

.6

.6

.5

7f

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.7

.6 

.6

.6

17.0

0.55

34

Sept.

^

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.1!

.4

.5

.5

.5 

.5

12.9

0.43

26

Calendar year 1955: Max 26 Mln 0.5 Mean 2.78 Ac-ft 2,010

Water year 1955-56: Max 397 Mln 0.3 Mean 4.01 Ao-ft 2,910
SANTA ANA RIVER BASIN 55

Santa Ana River near San Bernardino, Calif.

Location. Lat 34°04 I 14", long 117°16'4l", in San Bernardino Grant, on downstream side of

 bridge on Waterman Avenue, 0.1 mile upstream from San Timoteo Creek and 2.7 miles 

southeast of San Bernardino, San Bernardino County.

Records available. --October 1928 to September 1937, October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 995 ft (from topographic map). Oct. 1, 

~^T928, to Sept. 30, 1937, at site 1.6 miles upstream at different datum.

Average discharge. 11 years (1928-37, 1954-56), 8.88 cfs (6,430 acre-ft per year); median

 of yearly mean discharges, 1.4 cfs (1,010 acre-ft per year).

Extremes . Maximum discharge during year, 2,180 cfs Jan. 26 (gage height, 3.80 ft); no

fl°1928-37! 1954 -56 / Maximum discharge, 11,200 cfs Feb. 6, 1937 (gage height, 4.80 ft, 

site and datum then in use); no flow during most of each year.

Remarks. Records fair except those for periods of fragmentary or no gage-height record,

 which are poor. Plow regulated by Big Bear Lake (see p. 47) . Many diversions upstream 

for irrigation and domestic use.

Rating table, water year 1955-56 {gage height, In feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Dec. 2-19, Dec. 25 to Jan. 6)

1.7

1.8

1.9

2.0

2.1

2.2

.9

3.5

9.4

20

37

2.3 

2.5 

2.7 

3.0 

3.2

60

136

254

538

615

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

2S

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

*0

0

0

0

0

0

0

0

0

0 

0

.5 73

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0.8

0.03

1.6

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0fr*

0

0

*f.2

0

0

1.3

0

0

.1

.2

0

0

0

0

0

3.6

0.12

7.1

Dec.

12

75.7

al

5.1

4.8

f4.1

7.9

7.2

6.6

4.8

4.8

4.4

*4.8

6.0

6.6

6.0

f2.4

f5.4

4.4

4.4

4.4

*2.8

3.9

a4

8.6

7.2

*f3.1

f2.8

f3.1

f2.8

f2.1

153.2

4.94

304

Jan.

f2.1

f2.1

*f2.1

fl.9

aO

fO

0

0

0

*0

0

0

0

0 

0

0

0

*0

0

0

0

0

0

*0

2.3

*561

*692

*f 1. 3

al

a. 5

*a2.5

1,268.8

40.9

2,520

Feb.

al

a. 5

a. 3

a. 3

a. 3

a. 2

*.2

.1

~T§

.7

.7

.6

.8 

.7

.7

 1.1

.2

.2

.1

*o

0

.9

.9

.3

.4

*.5

a. 4

a. 3

14.9

0.51

30

Mar.

ao.2

a.l

aO

aO

aO

*0

.8

.5

.2

.2

.2

0

*0

.1 

0

0

0

0

0

0

*0

0

0

0

0

.8

*1.2

o'Ts

0

0

4.6

0.15

9.1

Apr.

1.4

*2.5

2.0

1.3

.1

0

0

0

0

0

*.2

8.2

15

 .4 

.4

.5

.3

0

0

0

0

0 .

0

0

*0

.2

.7

.1

0

0

33.3

1.11

66

May

0

0

0

*0

0

0

0

0

.2

0

0

0

0 

*0

0

0

0

0

0

0

*o

0

0

0

0

.6

1.3

*!..*

.4

0

4.0

0.13

7.9

June

0

0

.4

fi

0

0

0

0

0

0

*0

0

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

1.4

0.05

2.8

July

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

*0

0

0

0

0

0

0

0

0

.6

0

0

0

0

0

*0

0.6

0.02

1.2

Aug.

(*)

C)

0

0

0

Sept.

(")

0

0

0

Calendar year 1955: Max 106 Min 0 Mean 1.58 Ac-ft 1,150

Water year 1955-56: Max 692 Min 0 Mean 4.06 Ac-ft 2,950

Peak discharge (base, 350 cfsl. Jan. 26 (10:30 p.m.) 2,180 cfs (3.80 ft). 

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge Interpolated or estimated on basis of 2 discharge measurements 

probable recession, and weather records.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
56 SANTA ANA RIVER BASIN

Little San Qorgonio Creek near Beaumont, Calif.

Location. Lat 34 0 01'30", long 116°57 I 00", in NE£ sec. 2, T. 2 S., R. 1 ¥., on downstream 

side of left abutment of Beaumont Avenue Bridge, 2.3 miles upstream from Wallace Creek 

and 7 miles north of Beaumont.

Drainage prea. 2.61 sq mi.

Records available. October 1948 to September 1956.

Gaae. Water-stage recorder and concrete control. Altitude of gage is 4,300 ft (from topographic map).

Average discharge. 8 years, 0.09 cfs (65 acre-ft per year).

Extremes. Maximum discharge during year, 30 cfs Jan. 26 (gage height, 1.60 ft); no flow 

during most of year.

1948-56: Maximum discharge, 319 cfs Aug. 23, 1955 (gage height, 2.18 ft), from 

rating curve extended above 1 cfs on basis of slope-area determination of peak flow; no 

flow during several months of each year.

Remarks. Records good. Several small diversions above station for irrigation. Discharge 

measurement or observation of no flow generall" made twice a month.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Jan. 25......... 0.6

7.1

2.5

.2

.1

Feb. 25......... 0.1

26. 

Apr. 14. 

15. 

27.

Feb. 23......... .1 May 10.

24......... .1 July 27......... .1

Nate.--Plow occurred only on days listed above. No gage-height record 

Jan. 28 to Feb. 22; discharge estimated on basis of weather records and normal recession curve.

Month

April. ...............................

May..................................

Water year 1955-56. ................

Ofs-days

-

Maximum

7.1

Minimum

0

Mean

003

r\Q

.03

Runoff In 

acre-feet

C9

23

Peak discharge (base. 10 of el. Jan. 26 {11:30 p.m.) 30 ofs (1.60 ftj.

San Timoteo Creek near Redlands, Calif.

Location. Lat 34°01'59", long 117°12'29'1 , in NE£NE£NE£ sec. 5, T. 2 S., R. 3 W., on downstream side of right abutment of county highway bridge, 2.0 miles southwest of Redlands 

and 3.4 miles downstream from Yucaipa Creek.

Drainage area. 123 sq mi.

Records available. October 1926 to September 1956.

Page. Water-stage recorder and concrete control. Altitude of gage is 1,280 ft (from topographic map). Prior to Oct. 30, 1934, at site 2 miles upstream at different datum.

Average discharge. 30 years, 1.51 cfs (1.090 acre-ft per year); median of yearly mean discharges, 0.6 cfs (430 acre-ft per year).

Extremes. Maximum discharge during year, 247 cfs Jan. 27 (gage height, 2.08 ft); no flow 

during most of year.

1926-56: Maximum discharge, 7,460 cfs Mar. 2, 1938, result of slope-area determination of peak flow; no flow during several months each year.

Remarks. Records fair. Discharge measurements or observations of no flow generally made 

twice a month. Entire low flow normally diverted above station for irrigation. Slight 

amounts of unmeasured irrigation waste water occasionally flow past this station.

Discharge, In .cubic feet per second, water year October 1955 to September 1956

Jan. 26......... 27

27......... 62

Apr. 12......... 0.2

July 26......... 8.4

Mote. Flow occurred only on days listed above.

Month

April.. .. .... .... .. .

Water year 1955-56..... ............

Cfs-days

.2

8.4

-

Maximum

62

.2

8.4

62

Minimum

0

0

0

0

0

Mean

2. 37

.007

.27

.15

.27

Runoff In 

acre-feet

177

.4

17

107

194

disc:

194 CfB (1.92 ft).

(base. 50 cfs). Jan. 27 (2 a.m.) 247 ofs (2.08 ft)j July 26 (7 p.m.)
SANTA ANA RIVER BASIN 57

San Timoteo Creek near Loma Linda, Calif.

Location. Lat 34°04'02", long 117°16'40", in San Bernardino Grant, on downstream rightbank wlngwall of bridge on Waterman Avenue, 0.2 mile upstream from mouth and 1.5 miles 

northwest of Loma Linda, San Bernardino County.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,010 ft (from topographic map).

Extremes. Maximum discharge during year, 349 cfs Jan. 26 (gage height, 4.30 ft), from 

rating curve extended above 65 cfs by logarithmic plotting; maximum gage height, 

4.59 ft July 25 (backwater from debris); minimum daily, 0.4 cfs on many days.

1954-56: Maximum discharge, that of Jan. 26, 1956; minimum daily, 0.2 cfs on 

June 25, July 2, 5-8, 10, 18, 195 C .

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made three times a month. Minor diversions above 

station by pumping. Loma Linda sewage-disposal plant discharges into stream.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16 

17

18

19

20

21

22

23 

24

25

26

27

2S

29

30

31

Total

Mean

Ac-fl

Oct.

0.4

.4

.4

.5 

al.3

al

.6

.6

6

fl

.8

.8

.8

.8 

.9

.9 

1.0

1.1

1.0

1.1

^tt

.9 

1.2

1.2

1.1

1.2

1.1

.9

.9

1.4

27.9

0.90

55

Nov.

1.2

1.1

1.0

1.0 

.1!

.8

.8

.8

.8

.8

.8

.8

.8

1.0

Q

.9 

.9

.9

.8

.8

1.0

.8

.8 

.8

.8

.8

.8

.8

.9

.9

26.0

0.87

52

Dec.

1.5

TT2

.9

1.1 

.9

.8

.8

.8

.8

.7

.8

.8

.8

.6 

. 6

.6

7s

.5

.6

.5

.5

.8 

.5

.6

.8

.7

.8

.8

.7

.5

22.9

0.74

45

Jan.

0.6

.6

.6

.6 

.6

.6

.4

.4

.4

.4

.4

.4

.5

.4

.5

.5 

.5

.4

.6

.8

.4

.6

1.4 

1.8

2.3

56

M

ep .4

.5

.7

 8

143.1

4.62

284

Feb.

1.6

1.7

3.8

H

4.0

3.8

3.4

4.0

4.2

4.0

3.4

3.4

3.6 3 6

3.6

3.4 

3.0

2.2

2.2

2.2

2.2

2.8 

2.5

2.4

1.9

if

1.7

85.8

2.96

170

Mar.

2.1

2.5

2.7

3.2 

3.6

175

3.8

3.6

3.6

2.5

2.4

2.2

1.9

1.7 

1.2

.4 

.6

1.2

.9

.4

.9

1.1 

.8

1.1

1.9

2.8

2.4

1.7

1.2

.9

63.3

2.04

126

Apr.

0.8

.6

172

1.4 

1.4

1.4

1.1

1.6

1.6

1

0

1.8

2^9

1.9

.6

.7

p

is

.7

.9

.8

.8

1.0 

1.1

.9

1.2

1.4

1.2

1.2

1.0

35.3

1.18

70

May

1.2

1.4

1.7

1.8

1.2

1.2

1.2

1.0

1.0

.8

.8

.9

.8

1.2

1.0

.6

.6

.8

76 

.8

.8

.6

.8

.9

1.2

1.2

1.2

30.8

0.99

61

June

1.2

.8

.9

.8 

.8

.9

.8

1.0

.8

.7

.9

irt 1.1

1.0

.8

.8

.8

.8

.8

ti

.8

.7

.8

.8

.9

.5

26.3

0.88

52

July

0.8

.7

78

1.4 

1.0

1.4

.8

.9

1.4

1.1

1.2

1.2

1.7

1.0

1.6

2.1

2.1

1.8

.8

.7

1.7 

1.0

2.2

a2.5

82

a2

a2

a2

1.9

45.1

1.45

89

Aug.

2.4

271

1.4

.8 

.S

.8

.7

5

76

.9

.6

.8

1.4

1.7

1.2

1.2

1.2

1.2

1.1

1.2

1.8

1.8 

2.4

1.2

1.4

1.6

1.4

1.6

1.6

1*6

40.1

1.29

80

Sept.

1.2

1.4

1.6

1.6 

1.8

1.7

1.4

1.2

1.4

1.7

1.4

1.6

1.4

1.4

1.2 

1.4

1.9

1.8

1.7

1.7

li2

1.2

1.4

1.2

1.6

1.1

1.4

43.8

1.46

87

Calendar year 1955: Max 40 Mln O.2 Mean 0.79 Ac-ft 574

Water year 1955-56 : Max 68 Mln 0.4 Mean 1.61 Ae-ft 1,170

Peak discharge (base. SO cfs). Jan. 26 (1O:30 p.m.) 349 cfs (4.30 ft)j July 25 (10:30 a.m.) 133 

cfs (4.59 ft).

a No gage-height record; discharge Interpolated or estimated on basis of 3 discharge measurements.
58 SANTA ANA RIVER BASIN

East Twin Creek near Arrowhead Springs, Calif.

Location. Lat 34 0 10'45", long 117°15'53", in NWiNE^NEi sec. 14, T. 1 N. , R. 4 W., on right 

bank 100 ft upstream from Del Rosa Water Co.'s diversion dam and 0.5 mile south of 

Arrowhead Springs.

Drainage area. 8.6 sq mi, approximately.

Records available. December 1919 to September 1956. Prior to October 1952, published-as 

Strawberry Creek near Arrowhead Springs, Calif.

Page. Water-stage recorder and broad-crested weir. Altitude of gage is 1,590 ft (from 

topographic map).

Average discharge. 36 years (1920-56), 4.68 cfs (3.390 acre-ft per year); median of yearly 

mean discharges, 3.4 cfs (3,500 acre-ft per year).

Extremes. Maximum discharge during year, 521 cfs Jan. 26 (gage height, 3.88 ft); minimum 

daily, 0.4 cfs Aug. 19-25, Sept. 6-30.

1919-56: Maximum discharge, 3,360 cfs Mar. 2, 1938, based on rainfall-runoff 

studies; practically no flow at times during 1929 and 1931-35.

Remarks. Records good. Discharge measurements generally made twice a month or more often 

during storm periods. One small diversion above station for domestic supply.

Rating table, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Dec. 1-8, Feb. 18-29)

1.4

1.5

1.6

1.7 

1.9 

2.2

0.2

.6

1.2

2.2

4.8

11

2.4 

2.6 

2.9

3.2

3.3

19

31

64

127

159

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.6

'.6

.7

.8

.7

.6

.6

.6

.6

.7

.6

.7

.7

.7

.7

.7

.7

.7

.8

1.0

1 .0

.8

.8

.8

.8

.8

.7

.6

.6

.6

21.9

0.71

43

Nov.

0.8

.7 

.7

76" ,6

.8

.8

.6

.7

.6

.8

1.0

1.0

2.1

1.3

1.4

1.6

1.4

1.2

1.1

Mm2.0

1.6

1.3

1.2

1.3

1.3

1.4

1.4

37.4

1.25

74

Dec.

3.0

H2.6

2.4

2.4

2.4

2.3

2.2

2.1

1.9

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.6 T76~

1.6

1.6

1.9

1.7

1.6

1.6

1.7

1.6

1.6

1.6

1.6

62.3

2.01

124

Jan.

1.6

1.5 

1.5

1.4

T74

1.5

1.5

1.6

1.5

1.5

1.6

1.6

1.5

1.6

1.6

1.6

1.6

1.7

1.7

1.7

1.7

1.6

1.8

1.7

4.6

140

78

10

9.3

7.8

7.0

294.7

9.51

585

Feb.

5.4

4.7 

4.2

3.5

3.4

3.4

3.2

3.0

3.0

2.9

2.9

2.8

2.8

2.8

2.6

2.9

2.8

2.8

2.8

2.5

2.4

ll' 2 f J

"T.3

3.9

3.5

3.4

3.4

3.4

105.1

3.62

208

Mar.

3.2

37?

3.2

3.1

3.1

3.0

2.9

2.9

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.6

2.5

2.5

2.6

2.6

2.4

2.2

2.0

2.0

2.0

1.9

1.8

1.6

TTS

1.6

1.7

77.8

2.51

154

Apr.

1.6

1.5 

1.4

1.3

1.2

1.2

1.2

1.3

1.5

2.0

2.2

3.7

6.2

s!4

3.1

2.9

2.6

2.4

2.3

2.1

2.0

2.0

2.1

2.1

3.0

3.0

2.4

2.3

2.3

70.1

2.34

139

May

2.3

2.3 

2.3

2.3

2.3

2.3

2.3

2.3

9.2

3.6

3.1

2.8

2.4

2.2

2.0

2.1

2.1

2.0

2.0

2.0

1.9

1.8 TTff

2.1

2.1

2.1

2.0

2.0

1.9

1 .3

78.4

2.53

156

June

1.7

T75 

1.6

1.6

1.6

1.6

1.6

1.6

1.5

1.4

1.4

1.4

1.3

1.3

1.4

1.4

1.3

1.2

1.1

1.2

1.3

1.2

1.2

1.0

1.0

1.0

.8

75

.8

.8

38.7

1.29

77

July

0.9

i!i 1.1

1.0

.9

.9

.8

.8

.8

.8

.9

.8

.7

.6

76

.6

.6

.6

.6

.6

.6

.6

.7

.7

.6

.6

.6

.6

.6

23.5

0.76

47

Aug.

0.6

'.B

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

.6

.5

.4

.4

.4

.4

.4

.4

.4

.5

.5

.6

.6

.6

.6

16.8

0.54

33

Sept.

0.6

'.6

.6

.5

>4

B 4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

12.9

0.43

26

Calendar year 1955: Max 22 Mln 0.6 Mean 2.41 Ac-ft 1,750

Water year 1955-56: Max 140 Mln 0.4 Mean 2.29 Ac-ft 1,670

Peak dlschartte (base, 40 cfs). Nov. 21 (6 p.m.) 40 cfs (2.70 ft): Jan. 26 (9:30 D.m.) 521 cfs

(3.88 ft) .
SANTA ANA RIVER BASIN 59

Waterman Canyon Creek near Arrowhead Springs, Calif.

Location. Lat 34°11'35", long 117°16'25", In NE£NWiNW£ sec. 11, T. 1 N., R. 4 W., on

left tank 0.8 mile northwest of Arrowhead Springs and 1.3 miles north of San Bernardlno 

National Forest boundary.

Drainage area. 4.55 sq ml.

Records available. November 1911 to October 1914 (published as "near San Bernardlno"), 

December 1919 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage Is 2,050 ft (from 

topographic map). Prior to December 1919, staff gage at site 300 ft downstream at 

different datum.

Average discharge. 38 years (1912-14), 1920-56), 2.72 cfs (1,970 acre-ft per year); 

median of yearly mean discharges, 1.8 cfs (1,300 acre-ft per year).

Extremes. Maximum discharge during year, 296 cfs Jan. 26 (gage height, 3.64 ft): no flow 

Oct. 2-4, 8, 9, 13, Aug. 9-27, Sept. 2-30.

1920-56: Maximum discharge, 2,350 cfs Mar. 2, 1938, based on rainfall-runoff 

studies; no flow at times during some summers.

Remarks. Records good except for period of no gage-height record, which are fair. Discharge measurements generally made three times a month. One small diversion for 

domestic use above station.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

1.5

1.6

1.7

1.8

1.9

2.0

2.1

1.3 

2.2 

3.5 

5.2

2.2

2.3

2.4 

2.6 

2.8 

3.0

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ae-ft

Oct.

0.1

0

0

0

.1

.1.1

0

0

.1

.1.1

0

.1.1

.1.1.1

.2

JL!

.3 

.3

.2

.1

.2

.3

.3

.1

.1 

.2

.2

4.0

0.13

7.9

Nov.

0.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.3

.4

.4

1.4

.7

.6

.7

.6

.5

.5

H.9

.7

.7

.7

.6

.6

.6 

.6

19.1

0.64

38

Dec.

1.6

1.4

al

a. 7

a^6

a. 6

a. 6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6 

.6

.9

.8

.7

.7

.7

.7

.7

.7

 8

22.2

0.72

44

Jan.

0.8

.8

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.8

.7

3.6

9.2

4.7 

3.8

3.5

158.9

5.13

315

Feb.

3.1

3.0

3.0

2.8

2.7

2.6

2.5

2.4

2.4

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.1

2.0

2.0

2.0

1.9 

1.9

8.7

577

3.8

3.4

3.0

2.7

2.6

81.7

2.82

162

Mar.

2.4

272

2.1

2.0

2.0

2.0

2.0

1.9

1.9

1.7

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6 

1.6

1.6

1.6

1.5

1.5

1.4

1.4

H1.4

52.5

1.69

104

Apr.

1.6

1.6

1.5

1.4

1.3

1.2

T72

1.2

1.2

1.3

1.4

2.4

2.8 TTs

1.6

1.6

1.6

1.6

1.5

1.4

1.3 

1.2

1.2

1.3

1.3

2.5

2.6

1.6

1.4 

1.3

46.9

1.56

93

May

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

4.8

2.4

1.8

1.7

1.5

1.3

1.1

1.0

1.0

.9

*1

.8

.8 

.8

.9

1.0

1.1

1.1

1.2

1.2

1.2 

1.1

1.0

40.0

1.29

79

June

0.8

.8

.7

.6

.7

.7

.7

.7

.4

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.6

.6 

.6

.6

.5

.5

.4

.4

.4

.4 

.4

17.0

0.57

34

July

0.5

.6

.6

.5

.5

.4

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.3

.2

.2

.2

.2 

3

8.3

0.27

16

Aug.

0.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

.1.1 .1.1

1.2

0.04

2.4

Sept.

0.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0 

0

0.1

0.003

0.2

Calendar year 1955: Max 8.5 Mln 0 Mean 1.12 Ac-ft 809

Water year 1955-56: Max 86 Min 0 Mean 1.23 Ac-ft 896

(3.64 Peak ft). discharge (base. 55 of a). Nov. 21 (6 p.m.) 36 cfs (2.63 ft); Jan. 26 (3:30 p.m.) 296 cfs 

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

East Twin Creek near Arrowhead Springs.
60 SANTA ANA RIVER BASIN

' City Creek near Highland, Calif.

Location. Lat 34°08'38", long 117°11'16", In SE&SW£NW£ sec. 27, T. 1 N., R. 3 W., on 

right bank 0.6 mile upstream from Highland Avenue and 1.5 miles northeast of Highland.

Drainage area. 19.8 sq ml.

Records available. October 1919 to September 1956.

Gage.. Water-stage recorder. Altitude of gage Is 1,580 ft (from topographic map). Prior 

to Mar. 1, 1939, at site a quarter of a mile downstream at different datum.

Average discharge. 37 years, 8.08 cfs (5,850 acre-ft per year); median of yearly mean 

discharges, 5.3 cfs (3,800 acre-ft per year). Average combined discharge of creek and 

City Creek Water Co.'s canal, 32 years (1924-56), 9.68 cfs (7,010 acre-ft per year); 

median of yearly mean combined discharges, 6.9 cfs (5,000 acre-ft per year).

Extremes. Maximum discharge during year, 862 cfs Jan. 27 (gage height, 4.08 ft); no flow 

during several months.

1919-56: Maximum discharge, 6,900 cfs Mar. 2, 1938, result of slope-area determination of peak flow; no flow during several months of many years.

Remarks. Records good. Discharge measurements generally made twice a month. City Creek 

Water Co.'s canal diverts above station for Irrigation. For records of combined discharge of creek and canal, see following page.

Rating tables, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1 to Dec. l)

Oct. 1 to Jan. 27 Jan. 28 to Sept. 3O

1.2

1.3

1.4

1.5

1.6

1.7

1.8

0 

.1 

.7 

2.2 

5.O 

9.4 

15

1.9

2.0

2.1 

2.4 

2.9 

3.3

23

32

44

93

225

39O

1.3

1.4

1.5

1.6

1.7

.1

.6

2.6

6.7

1.8

1.9

2.0

2.1

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

O

0

0

0

o

o

0

0

0

0

o

o

o

o

o

0

0

o

0

o

1.5

^

.3

.2

.1

.1

.1

.1

.1

.1

3.2

0.11

6.3

Dec.

0_.5

5.3

T7S

3.7

3.4

3.4

2.6

2.2

2.2

2.4

2.4

2.4

2.4

2.0

2.0

2.0

2.O

2.0

1.8

1.8

2.0

2.2

2.9

2.9

2.9

2.9

3.1

3.4

3.7

3.7

3.7

84.2

2.72

167

Jan.

3.7

-3.1

.9

.2

.a

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.1

.1

3.2

221

352

TT

22

15

11

676.3

21.8

1,340

Feb.

6.7

6.7

6.2

5.7

5.3

4.8

4.4

4.8

4.8

3.3

1.2

1.2

1.0

1.0

1.2

1.4

.9

.9

l!o

.9

.9

.9

7.O

12 ^T.9

6.2

3.3

2.3

2.3

_ - _-_

106.2

3.66

211

Mar.

2.6

2^3

2.1

2.1

2.3

.6

0

.1

.1

.1

.1

.6

2.1

1.6

.8

.2

.5

.4

0

0

.3

.1

.1

.1

.1

.1

.2

.1

.1

.1

22.2

0.72

44

Apr.

0.2

.2

.1

O

TS

O

o

o

.1.1

.2

3.2

~6.2 13

5.3

5.7

5.3

4.8

4.4

3.9

3.6

3.2

3.2

3.2

1.2

2.4

5.7

4.4

3.6

1.0

84.2

2.81

167

May

0.6

.5

.4

.5

.5

.6

.6

.6

9.2

5.3

4.8

3.6

1.3

.6

.6

.3

.2

TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4O.O

1.29

79

June

 

0.1JY o'

0"

.1

.1.1.1.1.1

.1.1.1.1.1

.1.1.1.1.1

.1.1.1.1.1

.1.1.1.1.1

2.8

0.09

5.6

July

 

0.1!~j

!i.1.1

.1.1.1

0

0

o

o

o

o

0

0

0

0

0

o

.1

0

o

0

0

0

0

0

0

0

o

0.9

0.03

1.8

Aug.

0

0

0

Sept.

0

O

o

Calendar year 1955 : Max 38 Mln o Mean 2.17 Ao-ft 1,570

Water year 1955-56 : Max 352 Mln o Mean 2.79 Ac-ft 2,O20

Peak discharge (base, 150 cfs). Jan. 27 (2:50 a.m.) 862 cfs (4.O8 ft).
SANTA ANA RIVER BASIN 61

City Creek near Highland, Calif. Continued

Combined discharge, In cubic feet per second, of City Creek and canal near Highland, Calif., 

water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

00"

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.3

.3

.4

.4

jjj

.5

.5

.5

.3

.4

.4

7.1

0.23

14

Nov.

0.4 

.4

.3

.3

.3

?

3

.2

.2

.2

.3

.8

1.0

3.0

TT

1.6

1.7

1.7

1.4

1.3

2.8

.6

.3

.2

1.0

1.6

1.3

1.4

1.6

1.6

30.0

1.00

60

Dec.

1.7

575

T3

3.7

3.4

3.4

2.6

2.2

2.2

2.4

2.4

2.4

2.4

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.2

2.9

2.9

2.9

2.9

3.1

3.4

3.7

3.7

3.7

85.8

2.77

170

Jan.

3.7 

3.3

2.7

2.6

2.4

2.4

2.4

2.4

2.4

2.1

2.1

2.2

2.3

2.3

2.4

2.4

2.4

2.4

2.5

2.6

2.7

2.7

2.7

2.7

5.0

221

352

41

22

15

11

727.8

23.5

1,440

Feb.

6.7 

6.7

6.2

5.7

5.3

4.8

4.4

4.8

4.8

4.3

3.6

3TT

4.0

4.4

4.6

5.1

4.6

4.6

4.6

4.6

4.3

4.2

9.3

12

T.9

6.2

5.2

5.3

5.3

157.2

5.42

312

Mar.

5.3 

47ff

4.1

3.3

3.4

3.7

3.7

4.1

3.9

3.9

3.9

3.8

3.9

4.2

3.8

3.9

3.6

3.5

3.5

3.4

3.4

3.4

3.5

3.1

3.1

3.1

3.0

2.9

?7ff

2.9

3.2

112.3

3.62

223

Apr.

4.0 

3.8

3.7

3.5

3.4

3.1

3.0

2.9

S72~ 2.8

3.6

5.9

13

T.3

5.4

5.8

5.4

4.9

4.5

4.0

3.7

3.3

3.3

3.3

3.3

5.0

5.8

4.5

4.1

4.2

132.7

4.42

263

May

4.3 

3.9

3.5

3.6

3.6

3.2

3.2

3.2

12

~ff.6

5.4

4.9

3.7

3.8

3.9

3.8

3.6

3.6

3.4

3.3

3.3

l*±T7T

3.5

4.0

4.1

4.1

4.3

4.1

3.7

3.4

129.2

4.17

256

June

IT?

2.4

2.2

2.1

2.1

2.1

1.8

1.7

l.S

1.4

1.2

1.1

1.2

1.5

1.6

1.4

1.3

1.3

1.3

1.4

1.3

1.2

1.1

1.1

1.0

3

.7

.7

44.8

1.49

89

July

0.7 

1.1

1.3

1.2

1.0

.7

.5

.4

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.1

.1

.1

.1

10.2

0.33

20

Aug.

**

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

472

.2

.2

3.5

0.11

6.9

Sept.

0,2

IT.1.1

.1.1.1.1

.1

.1

.1.1

.1.1

.1.1

.1

.1.1

.1.1.1.1

.1

.1

.1.1.1

.1

3.1

0.10

6.1

Calendar year 1955: Max 38 Mln 0 Mean 3.55 Ac-ft 2,570

Water year 1955-56: Max 352 Mln 0 Mean 3.94 Ac-ft 2,860
62 SANTA ANA RIVER BASIN

Devil Canyon Creek near San Bernardlno, Calif.

Location. Lat 34°12'05", long 117°20'10", In Muscuplabe Grant, on right bank 0.5 mile

 downstream from tributary and 7.3 miles northwest of San Bernardino, San Bernardino 

County.

Drainage area. 6.16 sq mi.

Records available.--November 1911 to September 1912, October 1913 to September 1914, December 1919 to September 1956.

Gage.--Water-stage recorder and broad-crested weir. Altitude of gage is 1,800 ft (from

 topographic map). Prior to December 1919, staff gage at site 500 ft downstream at 

different datum.

Average discharge.--37 years (1913-14, 1920-56), 1.71 cfs, unadjusted (1,240 acre-ft per

 year); median of yearly mean discharges, 0.8 cfs, unadjusted (580 acre-ft per year).

Extremes. Maximum discharge during year, 77 cfs Jan. 26 (gage height, 2.80 ft); maximum

 gage height, 5.78 ft Jan. 27 (from debris wave); no flow Oct. 1 to Nov. 20, Nov. 22 

to Jan. 24, May 13 to Sept. 30.

1913-14, 1919-56: Maximum discharge, 3,320 cfs Mar. 2, 1938, by rainfall-runoff 

studies; no flow for periods during most years.

Remarks. Records good except those for periods of no gage-height record and indefinite

 stage-discharge relation, which are fair. City of San Bernardino diverts above station 

for municipal supply. Fire of Sept. 25, 1954, and succeeding days burned nearly 90 percent of drainage area above station resulting in debris waves passing station at time 

of each rainstorm.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total 

Mean 

Ae-ft

Oct.

(*)

(*)

(*)

0 

0 

0 

0

Nov.

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

(f~!

0

0

0

0

0

0

*0 

0

0.1 

0.003 

0.2 

57

Dec.

(*)

(*)

0 

0 

0 

69

Jan.

0"0

0

o

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

1.4

32

*eIB"

elO *e6

4.0 *3.5

74.9 

2.42 

149 

52

Feb.

2.9

2^4

1.8

1.3

1.1

 1.0

.8

.8

.7

.6

.5

.4

.3

.3

*jl

.2

.2

.2

.2

.2

.2

.2

2.1

.4

.3

.3

.3

.3

*.3

20.5 

0.71 

41 

141

Mar.

0.4

.4

.4

.3

.4

*.4

.4

.4

.3

.2

.2

.2

*.2

.2

 1

.1

.1

.1

.2

.2

.2

.4

*.4

.3

.3

.4

.4

*.4

.4 

.4

9.5 

0.31 

19 

125

Apr.

0.8

*.8

.7

.6

.5

.2

.2

.1

.1

.1

*.l

.6

2.075"

.5

.3

.2

.1

.1

.1

.1

.1

.1

.1

*.l

.8

1.0

.1

.1

.1

11.2 

0.37 

22 

138

May

0.1

.1

.1

.1

.1

.1

.1

.1

*1.2

4

.1

.1

0"0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

*0 

0

0

2.6 

0.08 

5.2 

158

June

(*)

(*)

0 

0 

0 

117

July

(*)

(*)

0 

0 

0 

109

Aug.

(*)

(*)

0 

0 

0 

82

Sept.

0 

0 

0 

69

Adjusted for diversion

Ac-ft| 60 57

Calendar year 1955: 

Water year 1955-56;

69 201 182 144 160 163

Observed

Max 10

Max 32

Mln 0 

Mln 0

Peak discharge (base, 25 cfs). Jan. 26 (5

* Discharge measurement or observation of

Mean 0.82 

Mean 0.32

117 [ 109) 82

Ac -ft 591 

Ac -ft 236

Adjusted

69

Ac -ft 1,440 

Ac -ft 1,410

p.m.) 77 ofs (2.80 ft), 

no flow made on this day.

San Bernardino.

e Stage-discharge relation Indefinite; discharge estimated on basis of 2 discharge measurements, 

weather records, and records for Waterman Canyon Creek near Arrowhead Springs.

Note. No gage-height record Oct. 1 to Nov. 11, Apr. 15-24, May 11-15; discharge estimated on 

basis of 5 discharge measurements, weather records, and records for Waterman Canyon Creek near 

Arrowhead Springs.
SANTA ANA RIVER BASIN 63

Lytle Creek near Pontana, Calif.

Location. Lat 34°12'42" . long 117°27'24", in NW^SE^SE^ sec. 36, T. 2 N., R. 6 W., on 

bank at downstream side of highway bridge abutment, 0.7 mile upstream from right 

tributary and 8 miles north of Pontana.

Drainage area. 46.9 sq mi.

Records available. October 1918 to September 1921, October 1922 to September 1956

Gage. Water-stage recorder. Altitude of gage is 2,380 ft (from topographic map). Prior 

to Mar. 22, 1938, at site 1 mile downstream at different datum.

Average discharge. 37 years, 8.40 cfs (6,080 acre-ft per year); median of yearly mean discharges, 1.7 cfs (1,200 acre-ft per year). Average combined discharge of creek, conduit, and infiltration line, 37.0 cfs (26,790 acre-ft per year); median of combined 

yearly mean discharges, 29 cfs (21,000 acre-ft per year).

Extremes. Maximum discharge during year, 964 cfs Jan. 26 (gage height, 3.83 ft), from 

rating curve extended above 15 cfs by logarithmic plotting; no flow during most of year

1918-21, 1922-56: Maximum discharge, 25,200 cfs Mar. 2, 1938, result of slope-area 

determination of peak flow; no flow during parts of each year.

Remarks. Records poor. Discharge measurements or observations of no flow generally made 

twice a month. For records of combined discharge of Lytle Creek, Southern California 

Edison Co.'s Lytle Creek conduit and Fontana Union Water Co.'s infiltration line, see below.

Cooperation. Records of flow through infiltration line furnished by Fontana Union Water 

Co.; wa^er-stage-recorder graph for the Lytle Creek conduit furnished by Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water veara). WSP 1011: 1943. WSP 1215: Drainage area.

Discharge, in cubic feet per second, water year October 1955 

to September 1956

Jan. 26......... 372

27......... 248

28......... 29

29......... 4.2

Jan. 30......... 21

31......... 14

May 9......... .1

Note. Flow occurred only on days listed above.

Month

May................................

Water year 1955-56 ...............

Cfs -days

ftflft o

-

Maximum

372

6

0

372

Minimum

0

Mean

1.88

Runoff in 

acre-feet

1,370

Peak discharge (base. 200 cfs). Jan. 26 (5:30 p.m.) 964 cfs (3.83 ft).

Combined discharge, In cubic feet per second, of lytle Creek, Southern California Edison Co.'s lytle 

Creek conduit, and Fontana Union Water Co.'s Infiltration line near Fontana, Calif., 

water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

15

TI

TI

15

15

15

15

14

14

15

15

14

14

15

15

15

14

14

14

14

15

15

14

14

14

14

15

15

15

15

15

451

14.5

895

Nov.

T5" 15

15

15

16

16

16

16

15

15

16

16

17

17

16

17

17

17

17

17

18

Iff

18

18

17

17

17

17

17

17

495

16.5

982

Dec.

TB" 17

18

ii

19

19

19

19

19

18

'18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

563 is. e

1,120

Jan.

18

Tff

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

- 18

18

18

21

382

g5g

48

32

36

36

1,239

40.0

2,460

Feb.

28

28

IB- 29

27

25

23

23

22

21

20

20

20

20

20

20

21

20

20

20

20

20

21

21

20

20

19- 19

20

635

21.9

1,260

Mar.

20

20

20

20

20

20

19

IT

22

22

22

20

23

13

22

22

22

22

21

21

21

20

20

20

20

20

20

20

20

20

20

643

20.7

1,280

Apr.

21

21

21

20

20

20

20

19

19

18

18

22

17

16

16

16

18

20

20

20

20

20

20

20

22

21

21

20

21

587

19.6

1,160

May

20

20

20

19

19

19

19

19

2419-

22

22

21

20

20

20

20

19

19

19

19

18

T6" 17

18

18

18

18

18

17

17

596

19.2

1,180

June

T6" 17

16

17

17

17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

15

TS

15

15

15

479

16.0

950

July

TB- 15

15

15

15

14

14

14

14

14

13

13

12

12

12

12

12

12

12

12

11

T2

11

11

12

12

12

11

12

12

12

395

12.7

783

Aug.

12

TS- 13

12

12

12

12

12

12

12

11

TST

12

11

11

11

11

11

11

12

12

11

11

11

11

12

12

12

12

12

12

363

11.7

720

Sept.

12

T2

12

11

TT

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

12

12

335

11.2

664

Calendar year 1955: Max 30 Min 13 Mean 19.0 Ac-ft 13,780

Water year 1955-56: Max 382 Min n Mean 18.5 Ac-ft 13,450
64 SANTA ANA RIVER BASIN

Cajon Creek near Keenbrook, Calif.

Location. Lat 34 e16'00", long 117 e27'35", in SWfcSEi see. 12, T. 2 N., R. 6 W., on right 

bank 1,800 ft upstream from Lone Pine Creek and 1.5 miles north of Keenbrook.

Drainage area. --40. 9 sq mi.

Records available. December 1919 to September 1956.

Page . Water-stage recorder. Altitude of gage is 2,630 ft (from topographic map). Prior 

to Oct. 24, 1935, water-stage recorder at site 1,500 ft downstream at different datum.

Average discharge. 36 years (1980-56), 9.04 cfs (6.540 acre-ft per year); median of yearly 

mean a is charges, 5.9 cfs (4,300 acre-ft per year).

Extremes. Maximum discharge during year, 989 cfs Jan. 26 (gage height, 7.58 ft), from 

rating curve extended above 200 cfs by logarithmic plotting; minimum daily, 1.2 cfs 

Nov. 5, 6. 8, Sept. 17.

1919-56: Maximum discharge, 14,500 cfs Mar. 2, 1938 (gage height, 19.3 ft), result 

of slope-area determination of peak flow; minimum, 0.05 cfs June 25, 1920.

Remarks. Records good except those above 100 cfs and for period of no gage-height record, 

which are fair. Discharge measurements generally made twice a month.

Revisions (water years) .--WSP 1091: 1946.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second)

(Shifting-control method used Nov. 8 to Dec. 16, Dec. 30 to 

Jan. 26, Apr. 17 to July 6, Sept. 19-30)

5.4

5.5

5.6 

5.8 

6.0

0.8 

2.9

5.6

13

24

6.2 

6.4 

6.7 

7.0

42

73

143

259

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

IS

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

fct

2.0

2.0

2.2

2.0

2.0

2.0

2.0

2.0

2.2

2.0

2.0

2.0 

2.2

2.4

2 J2

2.2

2.2

2.2

2.2

2.4

2.0 

2.0

2.0

2.2

2.0

2.0

2.0

2.0

1.8

64.0

2.06

127

Nov.

1.8 

1.8

1.6

1.4

1^2

1.8

1.4

1.2

1.4

1.6

1.8

1.8

2.0 w

2.0

2.0

2.0

2.0

1.8

2.0

2.0

1.8 

1.8

1.8

1.8

1.8

1.8

1.8

2.0

53.0

1.77

105

Dec.

2.0 

2.2

2.2

2.2

2.2

2.0

2.0

i4ITS

1.8

1.8

1.8

1.8

1

1.8 

2.0

2.0

2.2

2.2

2.2

2.2

2.2

2.2

H2.2

2.2

2.2

2.2

2.2

8.0

2.0

64.4

2.08

128

Jan.

w2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.0

2.0

2.0 

2.0

2.0

2.0

2.2

2.2

2.2

2.0

2.0

2.0 

2.0

3.9

226 'g£

a5

a4

a4

a3.5

319.0

10.3

633

Feb.

a3.5 

a3.5

a3.5

a3. 5

a3.5

a3.4

aS

2.9

2.9

2.9

2.6

z!s

2.6 

2.6

2.6

2.9

2.9

E.9

2.6

2.6

2.6

sU

2.9

2.9

2.9

2.9

87.4

3.01

173

Mar.

ftf

2.9

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.9

2.9

2.6 

2.6

2.9

2.6

2.6

2.6

2.6

2.6

2.6

2.6 

2.4

2.2

2.8

2.4

2.2

2.8

2.4

79.8

2.57

158

Apr.

2.6 

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.9

3.1

4.7

Ttl

3.9

3.4

2.9

2.9

2.6

2.4

2.6

2.4 

2.6

2.6

3.4

3.1

2.9

2.9

2.9

92.2

3.07

183

May

2.6 

2.6

2.9

2.9

2.9

2.9

2.9

2.6

2-4

375

3.4

2.9

2.4

2.4 

2.4

2.2

7*0"

2.2

2.2

2.2

2.4

2.6 

2.9

2.9

2.9

3.1

3.1

3.1

3.1

3.1

90.1

2.91

179

June

H2.6

2.4

2.4

2.2

2.0

TTB"

lie

1.6

1.8

2.0

2.2 

2.O

2.0

1.8

1.8

1.8

1.8

1.8

2.0

1.8 

2.0

2.0

2.0

2.0

2.0

2.2

2.4

60.6

2.02

120

July

w2.2

2.0

2.0

2.1

2.0

2.0

2.0

1.8

1.8

1.8

1.8

2.0 

2.0

2.0

2.0

2.0

2.0

1.8

l.S

1.8

1.8 

1.6

1.6

1.4 j_ "4 i!i

1.4

1.4

1.4

56.7

1.83

112

Aug.

Ttt i!e

1.6

1.4

1.4

1.6

1.6

1.6

1.6

1.6

TTs~

i!s

l.S

1.8

1.8

1.6

1.6

1.6

1.6

1.6

1.6 

1.6

1.6

1.8

1.8

1.8

1.8

1.8

1.8

51.4

1.66

102

Sept.

1.6

1.4

1.6

1.6

1.6

1.6

1.6

1.6

1.4

1.4

1.4

1.4

1.4

1.4 

1.4

1.4

TT!

1.4

1.6

1.6

1.6

1.6 

1.6

1.6

1.6

1.6

1.6

i4T75

45.8

1.53

91

Calendar year 1955: Max 18 Mln 1.2 Mean 3.28 Ao-ft 2,380

Water year 1955-56: Max 226 Mln 1.2 Mean 2.91 Ao-ft 2,110

a No gage 

slon curve .

harge (base. 14 

-height record;

40 cfs).--Jan. 26 (3:30 p.m.) 989 cfs (7.58 ft).

discharge estimated on basis of 1 discharge measurement and normal reces-
SANTA ANA RIVER BASIN 65

Lone Pine Creek near Keenbrook, Calif.

Location. Lat 34°15'55", long 117 0 27<SS n , in SE£ sec. 12, T. 2 N., R. 6 W., on right 

bank 50 ft upstream from Atchison, Topeka and Santa Pe Railway bridge, 120 ft upstream 

from mouth, 0.7 mile northeast of Keenbrook, and 16 miles northwest of San Bernardino.

Drainage area. 15.0 sq mi.

Records available. December 1919 to September 1938, June 1949 to September 1956.

Bage. Water-stage recorder and concrete control. Datum of gage is 2,605.92 ft above 

mean sea level, datum of 1929, supplementary adjustment of 1946. Prior to Mar. 2, 

1938, water-stage recorder (destroyed by flood) and Mar. 2 to Sept. 30, 1938, staff 

gage, at same site at datum 0.98 ft higher.

Average discharge. 25 years (1920-38, 1949-56), 1.32 cfs (956 acre-ft per year); median 

of yearly mean discharges, 0.5 cfs (360 acre-ft per year).

Extremes.--Maximum discharge during year, 111 cfs Jan. 26 (gage height, 3.10 ft); minimum 

daily, 0.1 cfs June 1 to July 14, Sept. 1-29.

1919-38, 1949-56: Maximum discharge, 6,180 cfs Mar. 2, 1938, on basis of slopearea determination of peak flow; minimum, 0.1 cfs at times during 1926-32, 1951-52, 

1956.

Remarks.--Records good. Discharge measurements generally made twice a month.

Rating table, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second)

(Shifting-control method used Nov. 29 to Dec. 22, Mar. 18-23, 

Sept. 3-16)

1.1

1.2

1.3

1.4

1.5

0.1 

.4

.8 

1.6 

2.7

1.6 

1.8 

2.1 

2.4

4.1

8.2

18

34

Discharge, in cubic feet per second, water year October 1955 to September-1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.2

0.20

12

Nov.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.0

0.20

12

Dec.

0.2

.2

.2

.2

.2

.2

.2

,2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.2

0.20

12

Jan.

"75 0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

1.9

 

30 .9

a. 4

a. 3

a. 3

a. 2

38.8

1.25

77

Feb.

aO.2

a. 2

a. 2

a. 2

a. 2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

5.8

0.20

12

Mar.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.2

0.20

12

Apr.

-^0.2

.2

.2

.2

.2

.2

.2

.2

JL

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.4

0.21

13

May

0.2 ~7l

.2

.2

.2

.2

.2

.2

 5. 1.7

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

7.7

0.25

15

June

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.0

0.10

6.0

July

-TT 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.JL

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

4.8

0.15

9.5

Aug.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.2

0.20

12

Sept.

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

_.£

3.1

0.10

6.1

Calendar year 1955: Max 1.9 Hln 0.2 Mean 0.30 Ac-ft 215

Water year 1955-56: Max 30 Mln 0.1 Mean 0.27 Ac-ft 199

Peak discharge (base, 80 cfs). Jar

a No gage-height record; discharge

i. 26 (3 p.m.) Ill cfs (3.10 ft). 

Interpolated or estimated on basis of 1 discharge measurement.
66 SANTA ANA RIVER BASIN

Lytle Creek (east channel) at San Bernardino, Calif.

Location. Lat 34°05'50", long 117°18'47", In San Bernardino Grant, on left bank 10 ft 

downstream from Mount Vernon Avenue Bridge In San Bernardino, San Bernardino County.

Records available. January 1929 to September 1956.

Gage.--Water-stage recorder. Altitude of gage 13,1,050 ft (from topographic map). Prior 

Fo Mar. 2, 1938, at site a quarter of a mile upstream at different datum.

Extremes. Maximum discharge during year, 20 cfs Jan. 26 (gage height, 2.05 ft); minimum 

dally, 0.1 cfs for many days.

1929-56: Maximum discharge, 21,500 cfs Mar. 2, 1938, result of contracted-opening 

determination of peak flow; no flow during parts of many years.

Maximum total discharge of Lytle Creek (east and west channels combined), 29,400 

cfs Mar. 2, 1938.

Remarks. Records poor. Discharge measurements generally made two or more times a month. 

Diversions for Irrigation and to debris cone for ground-water recharge. Since 1945, 

Lytle Creek flood-control dam 1.5 miles above station has diverted flow away from this 

channel and carried It directly to Warm Creek. Capacity of flood-control diversion 

channel, 30,000 cfs. A maximum of 300 cfs of low-stage flow can be diverted to east 

channel at dam when desired. Water over spillway of dam would enter natural channel.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Jan. 9, 10, Feb. 26 to Mar. 1, Mar. 12, 

13, 24, 25, Apr. 2-13, 23-25, Apr. 27 to May 4, May 8, 9, 25, 28, 

29, June 1, 28, 29, July 2, 3, 5, 6, 9-13, July 16 to Sept. 30)

0.8

1.0

1.1

0.1 

.3 

.7

1.2

1.2

1.3 

1.5 

1.8

1.9

2.9

5.6

12

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.2

.2

.2

.3

.3

.2

.2

.1

TI

.2

.2

.2

.2

.2

.1

.1

.2

.2

.2

.3

.2

.1

.1

.2

.2

.2

.4

TT

.1

.1

.2

6.1

0.20

12

Nov.

0.3

.3

.4

.3

.2

.2

.4

.3

.4

.3

.3

.3

.2

~1.5

.3

.3

.3

.1

TT

.7

.2

.4

.2

.3

.1

.1

.3

.4

.4

9.9

0.33

20

Dec.

1.0 -^

.2

.5

.4

.4

.4

.4

.4

.2

.2

.4

.4

.3

.3

.3

.1

TT

.2

.3

.3

.3

.3

.1

.1

.1

.2

.2

.2

.2

.1

9.0

0.29

18

Jan.

~7T 0.1

.1

.1

.2

.2

.1

.1

.2

.2

.2

.2

.2

.2

.2

.3

.4

.3

.3

.4

.1

.1

.3

.4

2.1

9.8

3Ttf

1.8

1.8

1.5

1.5

26.5

0.85

53

Feb.

1

T

1

1

1

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.2

.1

T3

.4

.2

.8

.4

.2

.2

.4

.4

.4

14.7

0.51

29

Mar.

0.3

.3

.1

TT

.2

.2

.3

.2

.2

.1

.1

.2

.5

.5

.5

.4

.2

.2

.4

.4

.4

.4

.6

TT

.5

.3

.3

.3

.3

.3

.3

' 9.5

0.31

19

Apr.

0.5

.9

.4

c

c

.5

.4

.3

.5

.5

.5

1.6

T7Z

.3

-il

.4

.5

.5

.5

.5

.5

.5

.5

.5

.4

.5

.5

.4

.5

.5

16.0

0.53

32

May

~^0.5

.5

.4

.3

.2

.5

.5

.5

.4

.4

.2

.2

.3

.4

.4

.4

.3

.1

TT

.3

.4

.4

.5

.5

.1

.2

.5

.5

.3

.5

11.3

0.36

22

June

~30.5

.1

Tt

.5

.5

.5

.5

.2

.2

.5

.5

.5

.5

.5

.3

.3

.5

.5

.5

.5

.5

.3

.3

.5

.5

.5

.5

.5

.5

12.9

0.43

26

July

~^0.5

.5

.5

.5

.5

.3

T5

.5

.5

.5

.5

.5

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.3

.5

.5

.5

.5

.5

.5

.5

14.7

0.47

29

Aug.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

:5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

15.5

0.50

31

Sept.

~T5 0.5

.5

.5

.5

.5

.4

.5

.4

.3

.4

.4

.4

.4

.4

.4

.4

.3

.3

SL

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

10.2

0.34

20

Calendar year 1955: Max 2.4 Min 0.1 Mean 0.40 Ac-ft 293

Water year 1955-56: Max 9.8 Min 0.1 Mean 0.43 Ac-ft 311

Note. No gage-height record Jan. 30 to Feb. 

measurement and weather records.

14; discharge estimated on basis of 1 discharge
SANTA ANA RIVER BASIN 67

Warm Creek near Colton, Calif.

Location. Lat 34°04'08", long 117°18 I 26", in San Bernardino Grant, on right bank 10 ft 

upstream from Colton Avenue Bridge, 0.4 mile upstream from mouth, and 0.9 mile east of 

Colton, San Bernardino County.

Records available.--August 1920 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 950 ft (from topographic map).

Average discharge. 36 years, 47.7 cfs (34,530 acre-ft per year); median of yearly mean 

discharges, 42 cfs (30,400 acre-ft per year). Average combined discharge of Warm Creek 

and Meeks & Daley Canal, 36 years, 59.2 cfs (42,860 acre-ft per year), unadjusted; 

median of yearly mean combined discharges, 54 cfs (39,100 acre-ft per year), unadjusted.

Extremes. Maximum discharge during year 2,060 cfs Jan. 26 (gage height, 6.70 ft); minimum daily, 6.3 cfs Mar. 25, 27.

1920-56: Maximum discharge, 27,500 cfs Mar. 2, 1938 (gage height, 11.2 ft), on basis 

of slope-area determination of peak flow; minimum, 1.4 cfs July 17, 1951 (gage height, 

0.71 ft). Maximum discharge including west channel of Lytle Creek, 35,000 cfs Mar. 2, 

1938.

Remarks. Records good except those for periods of no gage-height record or indefinite 

stage-discharge relation, which are fair. Discharge measurements generally made weekly. 

For records of combined discharge of Warm Creek and Meeks & Daley Canal, which diverts 

above station for irrigation, see following page. Adjusted runoff includes water 

pumped from the ground-water basin near Meeks & Daley Canal gage. In seasons of highwater table, there is flow in a depression paralleling Warm Creek 500 ft east of station. This year there was no flow. Lytle Creek flood channel (capacity, 30,000 cfs), 

completed in fall of 1945, enters Warm Creek above station and includes any flow which 

formerly might have been recorded at station on Lytle Creek (west channel).

Revisions (water years). WSP 1061: 1944-45,

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 9-14, Dec. 3-11)

Oct. 1 to Jan. 26 Jan. 26 to Sept. 30

0.7 

1.0 

1.3 

1.7

9.5

23

3.6

10

29

77

1.8 173

2.5 330

3.5 S10

85 1.2 4.2 860

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Toted

Mean

Ao-ft

Oct.

11

11

12

12

12

12

12

12

IP.

11

11

11

10

11

11

10

11

11

11

11

12

11

11

12

12

12

11

12

11

11 

12

350

11.3

694

Nov.

11

11

11

11

11

ell

11

11

11

11

11

11

9.8

32

12

12

12

12

12

11

36

15

12

12

12

12

12

13

12

12

392.8

13.1

779

Dec.

37

19

14

19

14

14

14

15

14

14

12

14

13

13

13

12

12

11

11

11

11

11

12

11

9.8

11

11

11

11

11

11

416.8

13.4

827

Jan.

11

IT

11

11

11

11

11

12

13

14

14

14

14

13

12

13

13

13

13

12

12

11

12

13

79

190" 826

a 60

a25

21

31

1,527

49.3

3,030

Feb.

22

12

12

11

9.2

13

11

9.2

9.2

12

12

12

13

14

12

12

13

14

14

16

16

22

38

25

19

17

20

18

14

_ _

436.6

15.1

S66

Mar.

15

15

14

13

13

14

15

13

13

13

13

14

14

13

12

11

10

8.4

11

11

12

10

10

9.2

6.5

7.0

6.3

11

10

11

10

358.2

11.6

710

Apr.

11

11

13

13

13

13

11

10

14

12

12

36

47

To

10

12

11

11

13

13

11

8.4

IT

10

10

10

12

10

9.2

13

400.6

13.4

795

May

12

12

12

12

12

10

15

12

24

TT

11

11

10

14

13

13

13

14

15

16

e!4

e!2

12

11

10

10

11 9.2

11

9.2

13

384.4

12.4

762

June

14

12

12

17

15

14

15

15

14

11

17

15

14

15

12

12

10

IS

13

14

13

13

12

10

13

12

14

14

14

13

402

13.4

797

July

11

11

11

1°

TT

11

11

10

14

13

14

12

13

12

10

13

13

14

13

13

13

13

16

T6

16

16

16

15

15

16 

15

407

13.1

807

Aug.

14

13

e!3

e!3

e!3

al3

a!3

13

14

14

14

12

12

10

10

11

12

10

10~~ 8.4

12

13

11

12

11

8.4

10

9.2

10

13 

13

365.0

11.8

724

Sept.

12

11

11

12

12

12

12

12

11

12

12

13

14

15

16

16

16

a!6

a!6

a!5

a!5

a!4

a!4

14

13

13

13

13

13

13

401

13.4

795

Calendar year 1955: Max 208 Mln 7.4 Mean 16.4 Ao-ft 11,860

Water year 1955-56: Max 826 Mln 6.3 Mean 16.0 Ac-ft 11,590

Peak discharge (base, 500 cfs). Jan. 26 (5 p.m.) 2,060 cfs (6.70 ft).

a No gage-height record; discharge Interpolated or estimated on basis of probable recession.

e Stage-discharge relation Indefinites discharge Interpolated.
68 SANTA ANA RIVER BASIN

Warm Creek near Colton, Calif. Continued

Combined discharge. In cubic feet per second, of Warm Creek and Meeks & Daley Canal near 

Colton, Calif., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ftJ

(t)

Oct.

25

25

23

2T

26

26

26

26

24

25

25

25

24

25

26

24

24

24

24

24

25

24

24

25

25

25

24,

25

24

23

25

764

24.6

1,520

758

Nov.

24

24

24

24

24

24

24

23

24

24

23

23

23

39

16

16

16

16

16

15

40

Iff

15

15

16

16

16

17

16

16

627

20.9

1,240

759

Dec.

41

2?

18

23

17

17

18

18

18

18

16

18

16

17

17

16

16

19

25

25

25

23

20

16

14

17

21

20

20

23

26

620

20.0

1,230

780

Jan.

24

25

26

26

26

26

26

27

27

28

28

28

28

27

26

26

26

26

27

29

31

30

31

31

92

837

I9l

60

25

21

31

1,915

61.8

3,800

822

Feb.

22

12

13

12

10

14

12

12

12

14

14

15

16

17

15

15

15

16

17

19

18

22

3820"

19

17

20

20

22

488

16.8

968

740

Mar.

23

23

22

2020"

21

22

22

20

20

22

23

23

27

31

30"

29

27

30

30

30

28

27

26

22

24

23

28

27

23

27

775

25.0

1,540

802

Apr.

28

27

31

33

33

32

30

29

33

31

31

53

51

15

14

16

15

15

17

17

17

15

18

17

17

17

20

17

16

20

725

24.2

1,440

778

May

23

30

31

31

31

28

33

31

41

T6

16

17

21

33

32

32

31

32

33

35

34

32

32

31

30

30

29

31

31

29

32

918

29.6

1,820

806

June

33

31

31

36

33

32

33

33

32

29

35

32

30

31

28

28

26

29

29

28

27

27

26

23

26

25

27

26

26 

25

877

29.2

1,740

793

July

23

24

24

22

23

23

23

22

26

25

26

24

25

24

22

25

25

26

25

25

24

24

27

27

213

28

28

26

26 

27

26

773

24.9

1,530

815

Aug.

25

5T

24

24

24

24

24

24

25

25

25

23

23

21

21

22

23

21

19

21

23

24

22

23

21

18

2U

19

20 

23

23

698

22.5

1,380

807

Sept.

22

21

2T

23

23

23

23

23

22

23

23

24

25

25

26.

26

26

26

26

25

26

25

25

25

23

23

23

23

23 

25

715

23.8

1,420

806

AdJlusted for release from San Bernardlno city sewer plant

Ac-ft| 762 1 481 1 450 [ 2,980| 228J 738J 662 | 1,010 [ 947J 715

Observed

Calendar year 1955 : Max 210 

Water year 1955-56: Max 837

Mln 12 Mean 

Min 10 Mean

27.4 Ac-ft 19,830 

27.0 Ac-ft 19,630

| 573 | 614

Adjusted

Calendar year 1955: Mean 14. 

Water year 1955-56 : Mean 14.

8 Ac-ft 10,690 

0 Ac-ft 10,160

t Inflow,, in acre-feet, from San Bernardlno city sewer plant..
SANTA ANA RIVER BASIN 69

Santa Ana River at Riverside Narrows, near Arlington, Calif.

Location (revised).--Lat 33°57'53", long 117°27'55", in SW^NE^SW^ sec. 25, T. 2 S., R.

 6 to., on right,bank at downstream side of bridge on Pedley Road, 1.8 miles downstream 

from Union Pacific Railroad bridge, 3.3 miles northwest of Arlington, and 12 miles 

upstream from Temescal Creek.

Records available. January 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage is 666.87 ft above mean sea level (levels by

 Riverside County engineer). Prior to Nov. 15, 1943, at site H miles upstream at different datum. During this period temporary stations were maintained at different 

sites and datums within a quarter of a mile of the permanent gage. Nov. 15, 1943, to 

Aug. 31, 1954, at same site at datum 3.00 ft higher. Sept. 1, 1954, to Jan. 17, 1955, 

at same site at datum 2.00 ft higher.

Extremes.--Maximum discharge during year, 4,450 cfs Jan. 26 (gage height, 6.02 ft); mini-

 mum daily, 22 cfs July 23, 24.

1929-56: Maximum discharge, 100,000 cfs Mar. 2, 1938, on basis of slope-area 

determination of peak flow; minimum daily, 20 cfs on several days during August and 

September 1947.

Remarks.--Records good except those above 350 cfs and those for periods of no gage-height

 record and indefinite stage-discharge relation, which are fair. Discharge measurements are generally made once a week. Flow regulated by Big Bear Lake (see p. 47 ) 

Natural flow of stream affected by ground-water withdrawals, diversions for irrigation, 

and return flow from irrigated areas. The Metropolitan Water District of Southern California released 21,690 acre-ft of Colorado River water into Santa Ana River about 

1.1 miles above station during year.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

18

19

ZO

21

22

Z3

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

33

33

33

33

33

32

32

31

3Z

33

33

32

32

32

32

32

33

33

33

33

33

33

32

34

31

34

34

33

33

32

33

1,015

32.7

2,010

0

Nov.

34

33

33

33

32

31

3Z

32

32

33

33

32

33

~S5 48

36

37

37

37

36

43

37

35

34

34

34

34

34

34

35

1,048

34.9

2,080

0

Dec.

37

38

36

41

41

39

39

39

38

37

36

36

36

36

36

36

35

35

35

35

75

121

125

125

125

125

143

ISO

184

THT AO (

2,318

74.8

4,600

2,470

Jan.

187

187

187

192

195

195

195

195

195

195

195

105

a38

a37

a36

a35

35

35

35

35

35

35

39

37

45

1,160

1.480

al50

alOO

a 50

41

5,681

IS 3

11,270

3.62O

Feb.

38

37

37

36

36

36

36

35

35

35

35

35

35

35

35

35

36

36

36

36

37

36

36

35

34

33

32

32

31

1,021

35.2

2,030

0

Mar.

30

31

5T

30

31

30

31

31

30

30

30

29

29

28

28

27

26

25

25

25

25

25

25

25

25

25

26

25

25

25

25

853

27.5

1,690

0

Apr.

26

23

25

23

23

23

23

23

23

23

23

29

53

ZS

25

24

24

24

25

25

26

26

30

31

28

28

27

25

25

24

781

26.0

1,550

0

May

23

55

23

23

24

23

23

23

29

29

29

30

30

29

29

28

28

29

29

29

30

137

184

eTBT

e!84

e!84

e!84

184

184

184

182

2,354

75.9

4,67O

3,080

June

182

TS?

182

182

182

180

180

180

76

a28

a26

25

25

25

25

26

27

28

28

27

26

26

26

25

25

25

25

25

26

27

2,072

69.1

4,110

2,630

July

28

28

28

28

28

27

26

25

25

24

24

24

24

25

24

25

25

24

24

24

23

23

22

2?

33

.331

330

aZ9

328

3,28

28

807

26. 0

1,600

O

Aug.

28

27

27

26

25

25

25

25

25

25

25

26

26

26

25

26

26

26

25

25

25

25

25

25

25

26

26

88

161

6175

eT75

1,290

41.6

2,560

1,030

Sept.

el75

e!75

e!75

174

174

174

174

156

138

136

90

Id

14O

164

182

ISO" 184

180

180

180

180

180

180

180

180

180

177

177

177

174

5,020

167

9,960

8,860

Adjusted for release of Colorado River water

Ac-ft| 2,010 2,080] 2

Calendar year 1955: 

Water year 1955-56:

Max

Max

,130f

j

221 

1,480

7,650] 2,030|

Observed

Min 26 

Min 22

1,690]

Mean 

Mean

1,550]^

89.4 

66.3

1,590|

Ac -ft 

Ac -ft

1,480| 1,600|

64,750 

48,130

1,530| 1,100

Adjusted

Ac -ft 

Ac -ft

Z3,550 

26,440

Peak discharge (base. 500 cfa). Jan. 26 (11:30 p.m.) 4,450 cfs (6.02 ft).

t Colorado River water released to Santa Ana River.

a No gage-height record; discharge estimated on basis of records for 4 Santa Ana River stations 

downstream.

e Stage-discharge relation indefinite; discharge estimated on basis of records for 4 Santa Ana 

River stations downstream.

493801 O - 59 - 6
70 SANTA ANA RIVER BASIN

Day Creek near Etiwanda, Calif.

Location. Lat 34°11'05", long 117°32'20", in NWvNW^SW^- sec. 8, T. 1 N., R. 6 W., on left 

bank 0.5 mile downstream from confluence of 2 main forks and 4 miles north of Etiwanda.

Drainage area.--4.8 sq mi, approximately.

Records available. January 1929 to September 1956. Combined creek and diversion, October 1950 to September 1956.

Gage.--Water-stage recorder and broad-crested weir. Altitude of gage is 2,870 ft (from 

topographic map). Prior to Mar. 2, 1938, at site 200 ft upstream at different datum 

(destroyed by flood). May. 2 to Sept. 2, 1938, at site 200 ft downstream at different 

datum.

Average discharge.--27 years, 3.93 cfs (2,850 acre-ft per year); median of yearly mean 

discharges, 3.0 cfs (2,200 acre-ft per year). Average combined discharge of Day Creek 

and diversion, 6 years (1950-56), 3.02 cfs (2,190 acre-ft per year).

Extremes. Maximum discharge during year, 195 cfs Jan. 26 (gage height, 2.73 ft); minimum 

daily, 0.2 cfs Nov. 15-20, June 11-15, June 26 to July 2.

1929-56: Maximum discharge, 4,200 cfs Mar. 2, 1938, based on rainfall-runoff studies; no flow Oct. 5 to Nov. 1, 1950.

Remarks. Records good. Discharge measurements generally made twice a month. Etiwanda 

Water Co. diverts water above station. For records of combined discharge of creek and 

diversion, see following page. In addition, an infiltration gallery, unwatering the 

gravel in the bed of the stream at the gaging station, produced 420 acre-ft during 

year.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Oct. 1-19, Nov. 10-23, Jan. 8-12, 

Jan. 27 to Feb. 21, May 9-30)

1.0

.3 

.6

1.1 

1.7 

2.4 

4.4

1.2

1.3 

1.5 

1.7 

1.9

2.1

2.2

7.4

9.8

15

24

38

61

79

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0.4

.4

.4

.4

.4

.3

73

.3

.3

.3

.4

.4

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

10.4

0.34

21

Nov.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.5

.6

.7

75

^2

.2

.2

.2

.2

.2

.4

.3

.3

.3

.3

.3

.6

.7

.7

.7

11.1

0.37

22

Dec.

~78 0.9

.4

74

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

13.3

0.43

26

Jan.

0.4

.3

73

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

2.2

65

3?

13

8.0

4.8

4.1

138.0

4.45

274

Feb.

3.8 3T5-

2.5

.6

.5

.4

.4

.8

1.3

.8

.4

.4

.4

.4

.4

.5

.4

.4

.4

.4

.4

.3

177

2.0

.9

.8

.7

.6

.6

26.8

0.92

53

Mar.

"75" 0.5

.5

.4

74

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

14.2

0.46

28

Apr.

0.4

.4

.3

73

.3

.3

.3

.3

.3

.3

.3

.8

2.0

TTff

1.6

1.6

1.6

1.7

1.6

1.2

.5

.5

.5

.5

.5

.4

.4

.4

.3

.3

21.7

0.72

43

May

0.3 ~73

.3

.3

.3

.3

.3

.3

.675"

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

11.9

0.38

24

June

~

0.3

.3

.3

.3

.3

.3

.3

.3

.3

72" .2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

8.0

0.27

16

July

~7i 0.2

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.4

.4

.4

.4

.4

.3

.3

10.7

0.35

21

Aug.

~Z0.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.575"

.5

.4

11.5

0.37

23

Sept.

 

0.4J

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

75

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

13.2

0.44

26

Calendar year 1955: Max 4.6 Mln 0.2 Mean O.57 Ac-ft 409

Water year 1955-56: Max 65 Min 0.2 Mean 0.79 Ac-ft 577

Peak discharge (base, 25 cfs). Jan. 26 (5 p.m.) 195 cfs (2.73 ft).

Note. No gage-height record Mar. 2-22; discharge estimated on basis of 2 discharge measurements, 

weather records, and records for Day Creek diversion.
SANTA ANA RIVER BASIN 71

Day Creek near Etiwanda, Calif.--Continued

Combined discharge, In cubic feet per second, of Day Creek and diversion 

near Etiwanda, Calif., water year October 1955 to September 1956

Day

2

3

4

5 

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

1.0 

.9

iTff

1.0 

1.1

.9

.9

.9

.9

1.0

1.1

1.0

.9

.9

.9

.9

.9

1.0

1.2 

1.5

1.3

1.3

1.1

1.0

1.0

1.1

1.1

1.0

1.0

1.0

31.6

1.02

63

Nov.

1.1

1.0

1.0 

1.0

1.0

1.0

1.0

"73.9

1.0

1.1

1.1

1.5

T7J

1.3

1.4

1.2

1.2

1.5

1.5

1.5

1.4

1.4

1.3

1.3

1.1

1.1

35.5

1.18

70

Dec.

T75

1.7

T7f

1.7

1.6

1.6

1.5

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.6

1.4

1.4

1.5

1.6

1.6

1.6

1.6

46.4

1.50

92

Jan.

1.5 

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.3

TTS

1.3

1.3

1.3

1.3

1.3

1.4

1.4

1.4

1.4

1.5

1.4

3.4

65

3?

13

4.8

4.1

164.3

5.30

326

Feb.

3.8 

3TS

3.4

3.1

2.6

2.5

2.4

2.3

2.2

2.2

2.2

2.2

2.2

2.2

2.3

2.2

2.2

2.2

2.0

3T6~ 1.9

3.0

2.5

2.3

2.1

2.0

72.1

2.49

143

Mar.

1.9 

2.0

735

1.8

2.0

1.9

1.8

1.8

1.7

1.8

1.8

1.

1.

1.

1.

1.

1.

1.

T7B- 1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

53.6

1.73

106

Apr.

1.7 

1.7

1.5

1.4

1.4 

1.3

1.3

1.3

1.2

175

1.5

2.6

3.1 ?78-

2.5

2.4

2.4

2.6

2.4

2 5 

2.4

2.3

2.2

2.2

2.1

2.9

2.6

2.4

2.2 

2.2

62.4

2.08

124

May

2.1 

1.9

1.9

1.9

1.9 

1.9

1.8

ITS

3.4 r^

2.6

2.6

2.6

2.5

2.3

2.2

2.2

2.1

2.0

2.0

1.9

1.9

1.9

2.0

2.0

2.0

2.1

2.0

2.0 

1.9

1.8

66.1

2.13

131

June

1.7 

T77

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.3

1.3

1.3

1.3

1.4

1.5

1.4

1.4

1.4

1.4 

1.5

1.4

1.3

1.3

1.3

1.1

1.1

1.0 T70" 

1.0

41.6

1.39

83

July

1.1 

1.2

1.3

IT?

1.2 

1.1

1.1

1.0

1.0 1.1

1.1 1.1

1.1 1.1 1.1

1.0

1.0

1.0

1.0

1.0 

79" .9

.9

.9

1.2

1.1

1.0

1.0

1.0 

.9

.9

32.5

1.05

64

Aug.

1.0 

1.0

1.0

1.0

1.0 

.9

.9

.9

.9

.9

.9

.8

75

.9

.9

.9

.9

.9

.9

.9 

.9

.8

.8

.8

.8

.9

1.0

1.1

Tj5

1.0

.9

28.4

0.92

56

Sept.

~^0.8 

.8

.8

.7 

.7

.7

.7

.6

75

.6

.7

.7

.7

.6

.6

.6

.6

.7

. 8

'.7

.7

20.8

0.69

41

Calendar year 1955: Max 5.6 Mln 0.7 Mean 1.78 Ac-ft 1,290

Water year 1955-56: Max 65 Mln 0.6 Mean 1.79 Ac-ft 1,300
72 SANTA ANA RIVER BASIN

Santa Ana River at Hamner Avenue, near Corona, Calif.

Location (revised) . La t 33°56'43", long 117°33'30", In NE^NE^NE^ sec. 1, T. 3 S., R. 

7 W. , on left bank 300 ft downstream from Haraner Avenue Bridge, 4.8 miles north of 

Corona, and 5 miles upstream from Temescal Creek.

Records available. May 1930 to November 1956 (Irrigation seasons only).

Gage. Water-stage recorder. Altitude of gage Is 570 ft (from topographic map). Prior 

to May 1, 1946, water-stage recorder at several sites within 1 mile of the present 

site at various datums.

Remarks . Records good. Discharge measurements generally made six times a month. Plow 

regulated by Big Bear Lake (see p. 47 ). Natural flow Is affected by ground-water withdrawals, diversions for Irrigation, and return flow from Irrigated areas. Plow past 

station Includes Colorado River water released to the Santa Ana River by the Metropolitan Water District of Southern California (see Santa Ana River at Riverside Narrows, 

near Arlington, Calif.).

Cooperation. Twenty-one discharge measurements furnished by Orange County Flood Control 

District.

Discharge, In cubic feet per second, May to November 1956

Day

1

2

3

4

5

6

7

8

9

10

11

13

13

14

15

16

17

18

19

30

21

32

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Jan.

t!78

Feb.

t41

Mar.

t35

Apr.

t26

t35

May

27

24

2S

24

25

29

28

28

39

35

34

34

34

30

28

27

29

29

29

30

34

96

160

162

165

167

169

169

172

176

1 *7ft 1 /O

2,237

72.2

4,440

June

178

1S3

192

195

T55

a!95

a!95

195

124

a 40

36

33

33

32

32

a32

a32

a33

33

32

30

29

23

32

30

32

33

a32

30

30

2,327

77.6

4,620

July

32

29

28

27

26

27

27

27

27

26

25

24

23

22

22

21

5T

21

22

22

22

22

23

25

41

47

3ff

36

34

34 

35

856

27.6

1,700

Calendar year : Max Min Mean

Aug.

34

32

32

30

28

26

24

22

22

22

21

21

22

23

22

22

23

23

22

21

21

22

21

2050"

21

23

57

120

149 

TT9

1,115

36.0

2,210

Sept.

152

154

156

16O

a!60

a!60

a!60

a!40

a!30

a!3O

ISO" 90

a!30

a!50

a!70

alSO

alSO

183

188

190

19O

190

190

IBS

188

188

185

183

181

178

4,924

164

9,770

Oct.

174

172

172

172

172

172

172

172

176

178

162

122

97

97

81

40

38

36

35

35

34

34

35

35

34

34

35

38

36

35

34

2,859

92.2

5,67O

Ac-ft

Nov.

33

32

32

33

33

32

32

32

32

29

29

29

29

28

27

26

27

26

27

26

26

25

W

27

28

28

28

29

28

29

870

29.0

1,730

Dec.

t33

t30

The season : Max - Min - Mean - Ac-ft 30,140

t Result of discharge measurement.

a No gage-height record; discharge estimated on basis of 9 discharge measurements and records for 

4 nearby Santa Ana River stations.
SANTA ANA RIVER BASIN 73

Santa Ana River at Auburndale Bridge, near Corona, Calif.

Location. Lat 330 55'27", long 117°35'48", in Jurupa Grant, on right bank 50 ft upstream 

from Auburndale Bridge on River Street, 1.7 miles upstream from Temesoal Creek, and 

3.8 miles northwest of Corona, Riverside County.

Records available.--May 1930 to November 1956 (irrigation seasons only).

Gage. Water-stage recorder. Datum of gage is 501.36 ft above mean sea level, datum of 

1929 (levels by Orange County Flood Control District). Prior to May 1946, at various 

sites within 1,000 ft of the bridge and at different datums.

Remarks. Records good. Discharge measurements generally made six times a month. Flow 

regulated by Big Bear Lake (see p. 47 ). The natural flow is affected by ground-water 

withdrawals, diversions for irrigation and return flow from irrigated areas. Flow past 

station includes Colorado River water released to the Santa Ana River by Metropolitan 

Water District of Southern California (see Santa Ana River at Riverside Narrows, near 

Arlington). Water diverted into Durkee ditch, a quarter of a mile above station, bypasses station; discharge measurements of flow in ditch, in cubic feet per second, from 

April to December 1956, are as follows:

Date

Apr. 24

May 1

8

15

22

29

June 5

12

19

Discharge

4.43

4.21

3.84

3.71

3.09

4.19

3.65

8.76

3.00

Date

June 26

July 3

10

17

24

31

Aug. 7

14

22

Discharge

2.46

2.46

2.35

2.37

2.24

2.32

2.01

1.72

1.94

Date

Aug. 28

Sept. 4

11

18

25

Oct. 2

9

17

23

Discharge

1.78

2.01

2.38

3.15

2.88

3.28

3.23

2.31

2.47

Date

Oct. 30

Nov. 6

13

20

27

Dec. 4

Discharge

2.64

2.59

2.62

2.62

3.15

3.42

Cooperation.--Twentv-one discharge measurements furnished by Orange County Flood Control 

District.

Rating table, irrigation season 1956 (gage height. In feet, and

discharge, In cubic feet per second)

(Shifting-control method used Aug. 28 to Sept. 5,

Sept. 25 to Oct. 12)

0.29 

.5 

.8

1.2

23

52

117

217

Discharge, In cubic feet per second, May to November 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Jan.

t!95

Feb.

t64

Mar.

t47

Apr.

t37

t47

May

39

39

39

37

37

39

39

39

45

44

42

40

37

36

55

36

36

36

36

37

40

89

170

170

173

178

178

178

178

T3T ioi

2,484

80.1

4,930

June

183

188

191

204

209

209

212 2"l2~

143

49

49

44

39

39

36

36

39

36

37

35

33

32

36

37

33

32

33

33

31

3T

2,522

84.1

5,000

July

36

36

33

33

33

35

31

31

32

31

31

30

28

28

27

26

27

28

30

30

31

32

32

32

45

61

42

39

37

37

1,043

33.6

2,070

Aug.

37

37

36

33

35

32

27

27

27

26

26

25

25

24

23.

23

26

26

26

25

24

25

23

24

25

25

28

54

118

150

155

1,215

39.2

2,410

Sept.

155

15S

165

168

170

173

173

164

141

159

96

102

136

160

180

190

199

199

196

194

194

194

194

186

183

178

181

178

178

178

5,122

171

10,160

Oct.

156" 186

183

186

183

1S6

186

186

186

17S

171

133

103

103

93

45

42

40

37

35

33

35

35

35

35

35

36

39

39

36

39

3,045

98.2

6,040

Nov.

36

37

37

36

37

39

3T

36

35

36

35

35

35

37

33

33

33

35

36

33

33

33

33

36

35

36

39

36

37

36

1,065

35.5

2,110

Dec.

t40

t36

Calendar year : Max Mln Mean Ac-ft

The season : Max - Mln - Mean - Ac-ft 32,720

t Result of discharge measurement.
74 SANTA ANA RIVER BASIN

Cucamonga Creek near Upland, Calif.

Location. Lab 34°10'26", long 117°37'51", in SW^SE^NE^ sec. 17, T. 1 N., R. 7 W. , on 

right bank 0.5 mile downstream from main tributary on right and 5.3 miles north of 

Upland.

Drainage area. 10.1 sq mi.

Records available. December 1928 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is 2,360 ft (from 

topographic map). Prior to Jan. 17, 1935, and Apr. 15, 1935, to Nov. 11, 1936, at site 

2,500 ft downstream at different daturas. Jan. 18 to Apr. 14, 1935, at site 1,200 ft 

downstream at different datum. Nov. 12, 1936, to Dec. 13, 1938, at site 300 ft downstream at different datum.

Average discharge.--27 years (1929-56), 7.66 cfs (5,550 acre-ft per year); median of yearly 

mean discharges, 5.7 cfs (4,100 acre-ft per year).

Extremes. Maximum discharge during year, 474 cfs Jan. 26 (gage height, 4.32 ft, from 

floodmark); minimum daily, 0.9 cfs Sept. 24-30.

1928-56: Maximum discharge, 10,300 cfs Mar. 2, 1938, based on rainfall-runoff study; 

minimum daily, 0.6 cfs Aug. 17-21, 1951.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made twice a month.

Revisions (water years).--WSP 1041: 1944. WSP 1215: 1950.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

al.7

al.7

al.7

al.7

1.7

1.6

1.5

1.4

175 

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.7

2.0

2.0

2.0

1.9

1.8 

1.8

1.8

1.6

1.5

1.5

1.5

1.6

49.9

1.61

99

Nov.

1.7

1.7

1.7

1.6

1.7

1.6

1.6

1.6

1.7 

1.7

1.8

2.0

2.2

3_.6

2.6

2.5

2.5

2.3

2.3

2.2

2.6

2.4

2.3

2.3

2.1

2.0

1.9

2.0

2.0

2.3

62.5

2.08

124

Dec.

2.5

2.7

2.7

3.0

375

2.9

2.8

2.8

2.7 

2.6

2.5

2.5

2.7

2.6

2.5

2.6

2.5

2.3

2 3

2.3

2.3'

2.3

2.4

2.4 

2.4

2.5

2.6

2.7

2.9

2.9

2 .8

80.7

2.60

160

Jan.

2.8

2.6

2.4

2.2

2.2

2.2

2.2

2.2

2.1 

2.0

2.0

2.O

2.0

2.0

2.0

2.0

2.0

2.0

1.9

T79

1.9

1.9

2.0

2.0 

6.5

a!25

aBT

18

10

7.9

6.8

279.7

9.02

555

Feb.

5.7

5.2

4.8

4.1

3.8

3.6

3.5

3.4

3.4

5.1

3.1

3.1

3.2

3.2

3.2

3.6

3.6

3.6

3.6

3.6

3.6

3.6

6.4

5-74 

4.1

3.8

'3.4 3.6

3.2

 - - -

111.5

3.84

221

Mar.

5u°

2.9

2.9

2.9

2.9

2.9

2.9

2.8

2.7 

2.7

2.7

2.6

2.6

2.6

2.6

2.6

2.5

2.5

2.6

2.6

2.6

2.6

2.5

f*

2.5

2.6

2.5

2.5

2.5

2

c

.O

82.2

2.65

163

Apr.

3.1

3.1

3.0

2.8

2.8

2.7

2.7

2.7

ftf

3.0

6.1

6.7

4)1

3.8

3.7

3.7

3.5

3.2

3.1

3.0

3.0

3.0 

3.0

4.8

4.3

3.7

3.5

3.4

105.5

3.52

209

May

3.2

3.0

3.0

3.0

3.0

3.0

2.9

2.9

H

4.4

4.1

3.8

3.6

3.4

3.1

3.1

3.0

3.0

3.0

3.0

3.0

3.1

3.4 

3.5

3.5

3.4

3.2

3.1

2.9

2.8

105.2

3.36

207

June

2.8

TTf

2.6

2.4

2.3

2.3

2.3

2.1

2.0 

2.0

2.0

2.0

2.0

2.0

2.3

2.2

2.0

2.0

2.0

2.1

2.3

2.2

2.1

2.0 

2.0

1.9

1.8

TT8

1.8

1.9

63.9

2.13

127

July

2.0

1.9

1.9

1.9

1.9

1.8

1.6

1.6

1.4 

1.4

1.4

1.4

1.5

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5 

2.4

2.0

1.7

1.6

1.5

1.4

il3_

5O.4

1.63

100

Aug.

1.3

1.4

T74

1.4

1.3

1.2

1.2

1.2

1.1

T7I

1.1 1.1 1.1 1.1 1.1

1.1

1.1 1.1 1.1 1.1

1.1 1.1

1.1

1.1 

1.1

1.1

1.2

1.4

1.4

1.4

1.2

36.8

1.19

73

Sept.

1.2

T7T

1.1

1.1

1.1

1.1

1.1

1.1

1.1 

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9 

79

.9

.9

.9

.9

.9

31.0

1.03

61

Calendar year 1955: Max 10 Mln 1.4 Mean 2.90 Ac-ft 2.10O

Water year 1955-56: Max 125 Mln 0.9 Mean 2.89 Ac-ft 2,100

Peak discharge (base. 80 of3). Jan. 26 (time unknown) 474 cfs (4.32 ft).

a No gage-height record; discharge interpolated or estimated on basis of partial gage-height record, floodmarlcs, and records for nearby stations.
SANTA ANA RIVER BASIN 75

San Jacinto River near San Jacinto, Calif.

Location. Lat 33°44 I 05", long 116°49 1 45", in SE£ sec. 13, T. 5 S., R. IE., on downstream 

side of right pier of bridge on State Highway 74, 1 mile downstream from North Pork and 

8.2 miles southeast of San Jacinto.

Drainage area. 140 sq mi.

Records available. October 1920 to September 1956. Combined river and diversions, October 1948 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,982.75 ft above mean sea level (Corps of 

Engineers benchmark). Prior to Feb. 15, 1927, water-stage recorder at site about 150ft 

upstream at different datum. Feb. 15, 1927, to December 1929, staff gage at same site 

at different datum. December 1929 to Feb. 6, 1937, water-stage recorder at same site 

at different datum. Feb. 7, 1937, to Jan. 23, 1948, staff gage at same site at various 

daturns.

Average discharge. 33 years (1921-25, 1927-56), 19.2 cfs (13.900 acre-ft per year); median 

of yearly mean discharges, 7.1 cfs (5.100 acre-ft per year). Average combined discharge, 

river, canals, and pipeline, 8 years (1948-56) 15.2 cfs (11,000 acre-ft per year).

Extremes. Maximum discharge during year, 1,080 cfs Jan. 27 (gage height, 6.65 ft); no flow 

during several months.

1920-56: Maximum discharge, 45,000 cfs Feb. 16, 1927, on basis of slope-area determination of peak flow; no flow during several months of each year.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Discharge measurements or observations of no flow generally made twice a month. Flow 

partly regulated by Hemet Reservoir (capacity, 13,400 acre-ft); contents, 297 acre-ft 

Sept. 30, 1956, representing net decrease of 62 acre-ft during year. For records of 

combined daily discharge of San Jacinto River and diversions, see following page.

Cooperation. Daily discharge of Fairview Land and Water Go's pipeline and contents of 

Lake Hemet furnished by Lake Hemet Municipal Water District (formerly Lake Hemet Water 

Co.).

Revisions (water years).-- WSP 881: 1938.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

2.5

2.6

2.7

2.8

2.9

3.0

Oct. 1 to Jan. 25

0 3.1 

.1 3.2 

.2 3.3 

.6 3.4

1.2 3.6

2.4

Jan. 26 to Sept. 3O

4.2 

6.9

10

15

29

2.71

2.8

2.9

3.0

3.1

3.2

3.3

.1 

.4

1.1 

2.2 

4.0 

6.5

3.4

3.5 

3.8 

4.1 

4.5 

5.0 

5.6

11

16

40

78

160

310

545

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

O

0

O

Nov.

O

0

0

Dec.

0

"5.2 22

1.3

.7

.2

O

.5

.2

O

0

0

0

0

0

0

O

O

O

0

0

0

0

0

0

O

O

O

0

0

O

30.1

0.97

60

Calendar year 1955: Max 129

Jan.

0

0

O

O

O

O

0

0

0

0

O

O

O

O

0

0

O

0

0

0

O

O

0

O

0

91

531

101

a40

a25

a!5

803

25.9

1,590

Feb.

alo

a3

.8

.3

.4

.5

.4

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

0

O

O

O

0

0

4.5

.4

.1

.1

O

O

22.1

O.76

44

Mar.

0

0

0

Apr.

0

0

0

May

0

O

O

June

O

0

O

July

O0"

0

O

0

0

0

0

0

0

O

0

0

0

0

0

~T.3 17

O

0

0

0

0

0

0

O

0

0

O

O

O

18.3

0.59

36

Aug.

0

0

0

Sept.

0

0

0

Min 0 Mean 1.62 Ae-ft 1.17O

Water year 1955-56: Max 531 Min 0 Mean 2.39 Ac-ft 1,730

Peak discharge (base. 100 cfs). Jan. 27 (4:3O a.m.) 1,O80 cfs (6.65 ft); July 17 (2:30 p.m.) 

384 cfs (5.21 ft).

a No gage-height record} discharge estimated on basis of normal recession and weather records.
76 SANTA ANA RIVER BASIN

San Jacinto,River near San>Jacinto, Calif.--Continued

Combined discharge, In cubic feet per second, of San Jaointo River and diversions near 

San Jacinto, Calif., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.6

2.5

2.5

2.6

2.8

2.5

2.5

2.6

2.6

2.6

2.6

2.5

2.4

2.5

2.5

2.5

2.2

2.2

2.2

2.2

2.5

2.7

2.5

2.5

2.4

2.4

2.4

2.4

2.4

2.3

2.3

76.4

2.46

152

Nov.

2.3

2.3

2.4

2.4

2.3

2.3

2.3

2.2

2.3

2.2

2.3

2.3

2.4

376" 3.0

2.9

2.9

2.9

2.8

1.9

1.2

2.6

1.9

3.4

1.3

1.1

1.1

1.0

1.0

^9

62.9

2.10

125

Dec.

1.0

23

7.6

3.6

3.0

2.5

2.2

2.1

1.8

1.6

1.6

1.5

1.6

1.5

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.2

1.1

1.2

1.5

1.5

1.5

1.5

77.2

2.40

153

Jan.

1.5

1.4

1.4

1.4

1.3

1.2

ITS

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.4

1.4

1.5

1.5

99

543

TTT

47

36

24

892.1

28.8

1,770

Feb.

19

15

13

10

9.9

9.6

8.8

7.8

7.4

7.2

7.3

7.2

6.9

6.8

6.7

6.8

6.8

6.8

6.6

6.4

6.4

6.5

8.1

16

14

11

10

9.7

9.2

266.9

9.20

529

Mar.

8.8

8.4

7.9

7.6

7.4

7.4

7.2

7.0

6.4

6.3

6.3

6.4

6.2

6.2

6.0

5.8

5.8

5.6

5.4

5.4

5.3

5.0

5.4

5.1

4.9

.8

.7

.6

.6

.3

.3

186.5

6.02

370

Apr.

6.3

6.8

6.5

6.5

6.4

6.1

5.7

5.7

5.6

5.6

5.6

6.0

8.4

9.8

8.5

9.7

9.6

10

8.1

7.0

7.0

6.8

6.0

5.3

5T4

5.6

7.8

6.8

5.9

5.6

206.1

6.87

409

May

5.3

5.0

4.8

4.8

5.0

4.8

4.5

4.5

5.3

7.9

6.4

5.8

5.2

4.6

4.0

3.8

3.5

3.5

3.4

4.6

6.2

6.5

6.6

6.9

7.4

7.5

7.9

8.0

875

7.9

7.4

177.0

5.71

351

June

7.0

6.8

6.5

6.5

6.:

6.2

6.2

6.1

5.9

5.7

5.4

5.4

5.2

5.4

5.8

5.8

5.6

5.6

5.5

5.5

5.6

5.6

5.5

5.4

5.1

A 0 % ' a

4.9

6.3

UL

6.4

175.4

5.85

348

July

7.0

7.0

6.9

5.1

5.1

5.0

5.1

4.8

4.7

4.5

4.7

4.7

4.7

4.7

4.7

4.7

22

5.5

4.9

4.8

4.7

4.5

4.4

4.0

3.4

4.2

4.5

4.2

3.4

3.1

5.0

164.0

5.29

325

Aug.

3.1

3.1

3.1

2.8

2.8

2.7

2.6

2.2

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.2

2.2

2.1 271

2.1

2.1

2.2

2.6

2.7

2.3

2.3

2 .3

74.9

2.42

149

Sept.

2.2

2.2

2.2

2.2

2.2

2.2

2.1

2.1

2.1

1.4

2.0

2.1

2.1

2.1

2.1

2.1

2.1

2.1

1.7

1.7

1.9

1.9

1.9

1.9

1.9

1.9

1.9

1.9

2.0

2.1

60.3

2.01

120

Calendar year 1955: Max 137 Min 0.9 Mean 7.99 Ao-ft 5,790

Water year 1955-56: Max 543 Min 0.9 Mean 6.61 Ao-ft 4,800
SANTA ANA RIVER BASIN 77

Bautista Creek near Hemet, Calif.

Location. Lat 33°41'40", long 116°51'00", in NE&SW£ sec. 35, T. 5 S., R. IE., on left 

bank a quarter of a mile upstream from unnamed tributary, 6 miles upstream from mouth, 

and 8 miles southeast of Hemet.

Drainage area. 39.4 sq mi.

Records available. October 1947 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,250 ft (from topographic map).

Average discharge. 9 years, 0.56 cfs (405 acre-ft per year).

Extremes. Maximum discharge during year, 143 cfs Jan. 27 (gage height, 3.00 ft); no flow 

during most of year.

1947-56: Maximum discharge, 1,170 cfs July 19, 1955 (gage height, 4.43 ft, from 

floodmarks), from rating curve extended above 31 cfs on basis of slope-area determination of peak flow; no flow during most of each year.

Remarks. Records fair. Discharge measurement or observation of no flow generally made 

once a month. One diversion above station for irrigation of about 15 acres.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Nov. 14......... 0.1 Jan. 27......... 27

Jan. 26......... 1.0 28......... .3

Note. Plow-occurred only on days listed above.

Month

November 1955. . .......................

Water year 1955-56 ..................

Cfs-days

0.1

-

Maximum

0.1

27

Minimum

0

0

Mean

0.003

.08

Runoff In 

acre-feet

0.2

56

Peak discharge (base. 20 efs). Jan. 27 (3:30 a.m.) 143 cfs (3.00 ft).

San Jacinto River near Elsinore, Calif.

Location. Lat 33°39'5l", long 117°17'35" , in SE^SE^NE^ sec. 9, T. 6 S., R. 4 W., on right 

bank 2 miles east of Elsinore and 2.1 miles downstream from Railroad Canyon Dam.

Drainage area. 717 sq mi.

Records available. January 1916 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,270 ft (from topographic map). Prior 

to Feb. 13, 1916, staff gage at site 0.75 mile downstream at different datum. Feb. 13, 

1916, to Oct. 27, 1921, staff gage at present site at different datum.

Average discharge. 29 years (1927-56), 11.1 cfs (8,040 acre-ft per year); median of 

yearly mean discharges, 0.1 cfs (72 acre-ft per year), since construction of Railway 

Canyon Reservoir.

Extremes. No flow during year. ,

 T916-56: Maximum discharge, 16,000 cfs Feb. 17, 1927 (gage height, 11.8 ft), from 

rating curve extended above 2,000 cfs on basis of slope-area determination of peak flow; 

no flow for several months in most years.

Remarks. No flow since July 28, 1955. For calendar year 1955, maximum daily, 2.2 cfs; 

minimum, no flow; mean 0.08 cfs; observed runoff, 56 acre-ft; adjusted runoff, 229 acreft. Storage and diversion above station for irrigation. Flow partly regulated by 

Hemet Reservoir (capacity, 13,400 acre-ft) and regulated since 1928 by Railroad Canyon 

Reservoir (capacity, 12,000 acre-ft) 2.1 miles above station. Records for diversion 

from Railroad Canyon Reservoir for 1927-56 are given below.

Monthly and annual runoff, In acre-feet, of diversion from Railroad Canyon Reservoir, 

water years 1928-56

Year

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

194O

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

Oct.

O

0

0

O

126

215

0

0

152

309

626

620

562

273

416

449

245

462

206

103

O

5.5

O

0

0

0

0

0

0

Nov.

0

0

0

23

12

142

b

0

378

296

612

599

350

139

217

13

276

70

0

17

0

0

156

0

0

0

0

0

0

Dec.

0

O

O

0

0

1.2

0

O

514

559

269

399

245

79

247

0

168

171

1.3

27

0

0

0

0

O

0

0

0

0

Calendar 

year

.

418

O

2,730

1,060

2,530

0

12

2,610

5,190

5,170

6,380

5,620

2,670

2,820

2,950

3,100

3,320

2,250

2,500

613

46

156

0

0

151

0

0

173

Jan.

O

0

135

0

0

0

0

0

471

46

451

124

54

11

9.8

12

23

42S

28

27

0

0

O

0

0

0

0

0

0

Feb.

0

0

409

0

0

0

0

0

15

202

539

113

36

20

0

15

13

31

166

24

0

0

0

0

0

0

0

0

0

Mar.

0

0

206

0

127

0

12

0

109

64

495

591

163

72

195

92

32

8.1

375

136

0

0

0

0

0

0

0

0

0

Apr.

0

0

473

0

310

O

0

152

371

280

464

587

178

48

201

34

262

67

65

0

0

0

0

0

0

0

0

0

0

May

0

0

216

182

292

0

0

378

625

629

474

577

338

94

424

318

393

179

294

32

0

0

0

0

0

0

0

0

0

June

0

0

379

248

336

0

0

366

603

605

534

625

328

195

371

436

447

305

334

187

0

0

0

0

0

0

0

0

0

July

0

0

353

208

366

0

0

363

619

623

586

845

360

424

428

500

488

342

450

135

0

0

O

0

0

0

0

62

145

Aug.

418

0

332

134

378

0

0

300

614

623

617

654

369

546

433

508

496

346

392

72

0

0

0

0

0

0

0

0

352

Sept.

0

0

207

153

366

O

0

9.7

597

590

602

548

357

527

428

501

459

335

248

0

41

0o 

0

0

0

0

111

114

Water 

year

418

0

2,710

948

2,310

358

12

1,570

5,070

4,830

6,270

6,080

3,340

2,430

3,370

2,880

3,300

2,740

2,560

760

41

5.5

156

0

151

0

0

173

611
78 SANTA ANA RIVER BASIN

Elsinore Lake at Elsinore, Calif.

Location. Lat 33°40'35", long 117°22'05", in La La-guna Grant, on northwest shore at 

Elsinore, Riverside County.

Records available. December 1915 to September 1956.

Gage. Staff gage generally read once a month. Datum of gage is 1,230.0 ft above mean sea 

level. Gage heights have been reduced to elevations above mean sea level. Prior to 

Feb. 13, 1951, staff gage at numerous sites on northeast shore at various datums.

Extremes. Maximum elevation observed during year, 1,223.3 ft Feb. 15; lake probably dry 

Oct. 1 to Jan. 27 and from about Mar. 10 to Sept. 30, on basis of rainfall records and 

hydrographer's notes.

1915-56: Maximum elevation observed, 1,265.6 ft Mar. 20-25, 1916, during period of 

overflow; maximum observed since cessation of overflow in June 1917, 1,259.8 ft May 11- 

20, 1922; lake dry during parts of water years 1951, 1954, 1955, and 1956.

Remarks. Elsinore Lake overflows into Temescal Creek, which is its outlet, only during 

and after years of unusually heavy rainfall. Due to the drying out and compaction of 

the sediment which was on the lake bottom, the elevation at which the lake is dry is 

now about 1,223.0 ft instead of 1,224.0 ft as formerly indicated. There has been no 

outflow since June 30, 1917. History of the lake prior to 1916 is published in WSP 441. 

A summary of high stages that have occurred from 1916 to 1942 is contained in WSP 961.

Elevation, in feet, water year October 1955 to September 1956

Date

Oct. 5 

Nov. 8 

Dec. 7 

13 

Feb. 2 

11 

15

Klevatlon

Dry 

Dry 

Dry 

Dry 

1,223.22 

1,223.25 

1,223.29

Date

Mar. 2 

5 

12 

14 

28 

Apr. 18

Elevation

1,223.14 

1,223.14 

Dry 

Dry 

Dry 

Dry

Date

Apr. 30 

May 14 

June 19 

July 25 

Aug. 21 

Sept . 18

Elevation

Dry 

Dry 

Dry 

Dry 

Dry 

Dry

Temescal Creek near Corona, Calif.

Location.--Lat 33°50'29", long 117°30'37", in El Sobrante de San Jacinto Grant, on left 

bank 0.2 mile downstream from unnamed tributary and 3.7 miles southeast of Corona, 

Riverside County.

Records available. January 1929 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 730 ft (from topographic map).

Average discharge.--27 years, 3.87 cfs (2,800 acre-ft per year); median of yearly mean 

discharges, 0.06 cfs (43 acre-ft per year).

Extremes. Maximum discharge during year, 43 cfs Jan. 26 (gage height, 7.28 ft); no flow 

during most of year.

1929-56: Maximum discharge, 14,900 cfs Mar. 2, 1938, result of slope-area determination of peak flow; no flow during parts of most years.

Remarks. Records fair. Discharge measurements or observations of no flow generally made 

once a month. Many diversions above station. Flow regulated by Lake Elsinore and 

several storage reservoirs above station. No water wasted from Lake Mathews during year.

Discharge, in cubic feet per second, water year October 1955 to September 1956 

Jan. 25........... O.3

26........... 13

21........... 4.1

Note.--Flow occurred only on days listed above.

Month

Water year 1955-56 .................

Cfs-daya

--

Maximum

13

Minimum

O

Mean

.05

Runoff In 

acre -feet

35
SANTA ANA RIVER P1SIN 79

San Antonio Creek near Claremont, Calif.

Location. Lat 34°12'58", long 117°40'04", in SE£SW£NW£ sec. 36, T. 2 N., R. 8 W. , on right 

bank 0.5 mile upstream from Southern California Edison Co.'s Sierra powerplant and 

8.8 miles northeast of Claremont.

Drainage area. 16.9 sq mi.

Records available . March 1901 to September 1956. Prior t'o January 1917, published as 

"near Upland."

e. Water-stage recorder and broad-crested weir. Altitude of gage is 3,400 ft (from 

topographic map). Prior to Jan. 25, 1917, hook gage and rectangular weir in powerplant 

tailrace half a mile downstream at different datum; flow in natural channel estimated. 

Jan. 25, 1917, to Jan. 11, 1939, water-stage recorder at site 50 ft downstream at different datum.

Average discharge. 39 years (1917-56), 9.33 cfs (6.750 acre-ft per year); median of yearly 

mean discharges, 2.9 cfs (2,100 acre-ft per year). Average combined discharge of creek 

and conduit, 39 years (1917-56). 21.7 cfs (15,710 acre-ft per year); median of combined 

yearly mean discharges, 16 cfs (11,600 acre-ft per year).

Extremes . Maximum discharge during year 

0.3 cfs for many days.

51 cfs Jan. 26 (gage height, 2.18 ft); minimum

1917-56: 

runoff studies

.

Maximum discharge, 21,400 cfs Mar. 2, 1938, by slopes; no flow Aug. 24-27, 31, Sept. 1, Oct. 17-21, 1951.

slope-area and rainfallRemarks. Records narks.--Records good. good. Discharge measurements generally made three times a month, 

records of combined discharge of San Antonio Creek and Southern California Edison 

conduit, which diverts above station, see following page.

For 

Co.'s

Cooperation. Nineteen District. discharge measurements furnished by Los Angeles County Flood Control Gage-height record fo ----*- " ..,,-.. - ... . _,. for conduit furnished by Southern California Edison Co.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 29 to Feb. 4)

1.1

0.3

.8

1.7

4.4

1.4

1.6

1.7

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.4

B 4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.5

.4

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

Nov.

0.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.5

.5

.1!

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.5

.5

.5, .5

.5

.4

.5

14.7

0.47

29

.5

.5

15.0

0.50

30

Dec.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

74

.4

.5

te

.6

.6

.6

.6

.6

.6

.5

.5

16.0

0.52

32

Jan.

0.5

Ts

.5

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.6

.5

.5

.5

1.0

18

12

2.7

1.5

1.3

1.3

50.8

1.64

101

Feb.

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.1

1.1 1.1

1.1 1.1

1.1

1.1

1.1

1.0

.9

.9

4.9

1.5

1.6

1.5

1.2

.9

.9

.9

31.5

1.09

62

Mar.

0.9

79

!e

771

.7

.7

22.2

0.72

44

Apr.

0.7

Ts'.a

.7

.7

.7

.7

.7

.7

.7

.7

1.6

1.8

T7T

1.6

1.6

1.6

1.6

1.6

1.5

1.4

1.3

1.2

1.2

1.2

1.6

1.5

1.5

1.4

1.3

36.1

1.20

72

May

1.3

1.2

1.1

1.1

1.1

1.1

1.2

1.3

1.9

1.5

1.5

1.4

1.3

1.2

1.2

1.1

1.0

1.0

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

^S.

.8

34.0

1.10

67

June

0.7

.7

.6

.5

.6

.5

.5

.5

.5

.5

.6

.6

.5

.7

.7

4.8

.7

.7

.7

.7

.7

.6

.5

.5

.5

.4

.5

.5

.5

17.8

0.59

35

July

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

1.1

1.5

T72

.9

.7

 6

.6

17.4

0.56

35

Aug.

0.5Ts"

'.5

.4

.3

.3

.3

.4

.4

.4

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.4

.4

.3

.3

.4

.4

.4

.4

12.1

0.39

24

Sept.

"75 0.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

74

.4

.4

.3

.3

.3

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

9.9

0.33

20

Calendar year 1955: Max 14 Mln 0.3 Mean 0.99 Ac-ft 717

Water year 1955-56: Max 18 Mln 0.3 Mean 0.76 Ao-ft 551

Peak discharge (base, 10 efs).--Jan. 26 (4 p.m.) 51 cfs (2.18 ft).
80 SANTA ANA RIVER BASIN

San Antonio Creek near Claremont, Calif. Continued

Combined discharge, In cubic feet per second, of San Antonio Creek and Southern California Edison 

Co.'s conduit near Claremont, Calif., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

7.8 

7.8

7.8

7.8

7.9

7.9

7.9

7.9

7.9

7.9

7.9

7.6

7.6

7.7

7.6

7.5

7.5

7.5

7.5

7.6

7.5

7.5

7.6

7.6

7.6

7.6

7.6

7.6

7.3

1*1 

7.3

237.0

7.65

470

Nov.

7.6 

7.3

7.3

7.3

7.3

7.2

7.2

775" 7.0

7.2

7.2

7.2

7.2

1*1

7.4

7.1

7.4

7.1

7.1

7.1

7.8

7.6

7.4

7.4

7.5

7.4

7.1

7.1

7.1

7.4

218.8

7.29

434

Dec.

7.4 

7.4

7.3

7.3

7.3

7.3

6.4

777

7.4

7.4

7.4

7.4

7.4

7.1

7.4

7.4

7.3

7.3

7.0

7.1

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.2

7.1 

7.1

225.2

7.26

447

Jan.

7.1

7.1

7.1

7.2

7.2

7.2

7.2

7.1

7.1

7.1

7.1

6.9

77T

7.1

7.1

7.2

7.2

7.2

7.2

7.2

7.2

7.1

6.9

7.1

8.2

17

14

13 

12

290.2

9.36

576

Feb.

12 

12

12

12

13

13

13

14

14

13

13

13

13

13

13

13

13

13

12

12

12

12

14

14

12

12

12

12

11

367

12.7

728

Mar.

11

11

11

11

11

11

11

11

11

11

11

11

11

11

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12 

12

358

11.5

710

Apr.

12 

12

12

12

12

12

12

10

To

10

12

13

14

13

13

12

12

12

12

12

11

11

11

11

11

12

12

12

11

11

352

11.7

698

May

11 

11

11

11

11

13

13

13

15

T4

14

13

13

13

13

13

13

13

13

13

13

14

14

7.2

.9

.9

.9

.9

.9

.8 

78

308.3

9.95

612

June

0.7 

.7

.*!

4.9

14

14

12

12

12

12

13

13

12

13

13

13

12

12

12

12

12

12

12

12

12

10

10

10

10

10

317.9

10.6

631

July

10 

10

10

10

10

10

10

10

9.8

9.8

9.8

9.8

9.7

9.4

9.4

9.1

9.1

9.1

9.1

9.1

9.1

9.1

9.1

9.1

9.8

10

9.9

9.3

9.1

1*0 

9.0

295.7

9.54

587

Aug.

fti 8.5

8.4

8.3

8.3

8.3

8.3

8.4

8.1

8.1

8.2

8.5

8.2

8.2

8.2

8.2

8.2

7.9

7.9

8.0

7.9

7.9

7.7

7.7

7.9

7.9

8.0

7.7

7.7 

7.7

252.1

8.13

500

Sept.

7.6 

1*1

7.7

7.7

7.4

7.4

7.4

7.4

7.4

7.1

7.1

7.1

7.2

7.2

7.2

7.0

7.1

7.1

6 9

775

7.2

7.2

7.2

7.0

6.9

6.9

6.9

6.9

6.9

6.9

215.7

7.19

428

Calendar year 1955: Max 18 Mln 6.4 Mean 11.3 Ac-ft 8,200

Water year 1955-56: Max. 29 Mln 0.6 Mean 9;39 Ac-ft 6,820
SANTA ANA RIVER BASIN 

Santa Ana River below Prado Dam, Calif.

81

Location. Lat 33 0 53'00", long 117 0 38'40", in La Sierra Grant, on left bank of outlet 

channel, 2,500 ft downstream from axis of Prado Dam, and 4.5 miles west of Corona, 

Riverside County.

Records available.--May 1930 to November 1939 (irrigation seasons only), March 1940 to 

September 1956. Published as "at Santa Pe Railroad Bridge, near Prado" May 1930 to 

November 1939, and as "below Prado Dam, near Prado" March 1940 to September 1950.

e. Water-stage recorder and concrete control. Datum of 

above mean sea level (Corps of Engineers Survey). Prior 

recorder at about same site at various datums.

;age is approximately 449 ft 

to Mar. 18, 1940, water-stage

Extremes. Maximum discharge during year, 1,040 cfs Jan. 26 (gage height, 4.14 ft); minimum daily, 25 cfs Aug. 23-26.

1940-56: Maximum discharge, 2,260 cfs Dec. 24, 1940 (gage height, 3.20 ft); minimum daily, that of Aug. 23-26, 1956.

Remarks. Records good, except those for periods of no gage-height record or indefinite 

stage-discharge relation, which are fair. Discharge measurements generally made six 

times a month. Plow regulated by Prado Reservoir (capacity, 222,800 acre-ft, and 

Big Bear Lake (see p. 47 ). Plow past station during part of the year includes Colorado River water released to the Santa Ana River (see Santa Ana River at Riverside 

Narrows). Natural flow of stream affected by extensive ground-water withdrawals, diversion for irrigation, and return flow from irrigated areas. Santa Ana River Development Co. pumps water from the Prado Basin into a conduit which passes through the dam 

and is released to the river downstream from the gage.

Cooperation. Thirty-seven discharge measurements and records of bypass flow were furnlshed by Orange County Flood Control District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

£0

£1

£2

£3 

£4

25

£6

27

28

£9

30

31

Total

Mean

Ac-ft

(t)

Oct.

40

45

41

43

41

41

40

40

41

43

43

43

44

44

46

46

48

48

46

44

43

43

44 

46

51

50

51 

51

53

1,398

45.1

£,770

347

Nov.

55

53

51

46

46

46

44

44

46

48

51

53

53

20

66

59

61

61

61

61

64

6S

64 

64

62

64

64

64

64 

64

1,717

57.2

3,410

£1

Dec.

66

68

62

64

66

68

68

62

62

62

64

64

66

66

66

66

66

66

66

64

70

e!60

e!64 

e!68

e!68

6168

e!68

203

e206

~9rtfi ecub

206

3,189

103

6,330

-

Jan.

206

206

206

206

209

e216

6216

e216

e216

e216

e216

190

alOO

a90

a75

a70

670

e70

70

70

72

74

74 

74

97

693

1,000

950

860 

760

654

8,442

27£

16,740

-

Feb.

434

173

107

alOS

alOS

105

100

96

87

87

89

89

89

91

87

85

83

81

78

81

78

83

94 

89

87

81

78

78

IS

2,996

103

5,940

-

Mar.

74

74

74

76

78

78

74

74

72

72

74

74

72

74

74

72

70

68

68

66

66

6S

68 

66

66

66

70

66

66 

66

66

£,19£

70.7

4,350

-

Apr.

66

68

61

61

59

57

55

57

55

53-

55

64

151

103

74

72

72

70

70

66

64

62

64

67

64

-68

68

64

66

66

£,042

68.1

4,050

-

May

66

62

59

55

55

57

57

57

72

78

74

72

66

57

55

55

51

48

51

51

55

90

188 

188

188

191

191

188

188

1 AR J.OO

185

3,035

97.9

6,0£0

-

June

185

185

191

200

6200

e200

6200

e200

6150

74

66

61

55

53

51

57

57

57

55

51

50

46

46 

48

46

46

44

44

s

£,805

93.,5

5,560

191

July

46

48

46

46

44

44

44

43

43

40

40

38

35

36

36

36

38

43

40

40

41

40

36 

36

40

11

43

43

41 

40

40

1,287

41.5

£,550

463

Aug.

43

41

41

43

41

34

32

29

28

26

31

32

34

34

34

32

32

32

34

34

31

29

1

25

25

29

42

114

163

iZi

1,366

44.1

2,710

430

Sept.

174

177

177

174

174

174

171

171

139

160

102

100

147

160 ise

188

188

185

180

180

ISO

180

180 

180

182

182

182

182

182 

182

5,121

171

10,160

398

Adjusted for water pumped from Prado Basin bypassing gage

Observed

Calendar year 1955 : 

Water year 1955-56 :

Max 471 

Max 1,000

Min 3£ Mean 118 Ac-ft 

Min 25 Mean 97. £ Ac-ft

85,480 

70,590

Adjusted

Calendar year 1955: 

Water year 1955-56:

Mean 121 

Mean 99.8

Ac-ft 87,340 

Ao-ft 72,440

t Diversions, in acre feet, pumped from basin above Prado Dam, which is released to river below gage.

a No gage-height record; discharge estimated on basis of records for four nearby Santa Ana River 

stations.

e Stage-discharge relation indefinite; discharge estimated on basis of records for four nearbv Santa Ana River stations. y
82 SANTA ANA RIVER BASIN

Santa Ana River at county line, below Prado Dam, Calif.

Location. Lat 33°52'14", long 117°40'17", in NW£ sec. 36, T. 3 S., R. 8 W. (revised), on 

right bank 150 ft upstream from Riverside-Orange County line, 2.9 miles downstream from 

Prado Dam, and 6.1 miles west of Corona, Riverside County.

Records available. January 1919 to November 1940, May 1941 to November 1942, and May 1945 

to November 1951 (irrigation seasons only). May 1952 to September 1956. Published as 

"near Prado" 1919-42, 1945-50.

Gage. --Water-stage recorder. Datum of gage is 407.34 ft above mean sea level, unadjusted. 

Prior to May 1945, at site 500 ft downstream from Riverside-Orange county line at datum 

2.39 ft higher. May 1, 1945, to May 30, 1946, at present site at datum 1.00 ft higher.

Extremes . Maximum discharge during year, 1,190 cfs Jan. 27 (gage height, 6.47 ft); minimum daily . 29 cfs Aug. 10.

1919-40, 1952-56: Maximum discharge, 100,000 cfs (estimated) Mar. 3 (correction). 

1938 (gage height, 17.3 ft, site and datum then in use, from floodmarks in gage well); 

minimum, 25 cfs Aug. 18, 1929, Aug. 24, 1936.

Remarks. Records good. Discharge measurements generally made six times a month. Plow 

regulated by Prado Reservoir (capacity , 222,800 acre-ft) and Big Bear Lake (see p. 47). 

The normal flow is affected by ground-water withdrawals, diversions for irrigation, 

return flow from irrigated areas , and release of Colorado River water to the Santa Ana 

River by the Metropolitan Water District of Southern California (see Santa Ana River at 

Riverside Narrows).

Cooperation. Thirty-seven discharge measurements furnished by Orange County Flood Control 

District.

Revisions (water years) .--WSP 881: 1938.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac-ft

Oct.

44

44

46

47 

47

11

41

42

44

47

47

47

47

47

47

46

47

47

47

47

46 

46

46

46

49

52

49 

47

46

47

47

1,433

46.2

2,840

Nov.

47

44

42

42 

42

42

42

42

43

44

46

47

49

64

54

a50

a52

a52

a52

a52

a55 

58

56

54

52

53

54 

56

57

57

1,500

50.0

2,980

Dec.

5763"

58

60

61

61

60

58

57

57

58

58

60

60

61

63

63

63

64

64

67 

164

168

170

170

170

170 

205

.210

210

210

3,120

101

6,190

Jan.

210

210

210

210 

216

220

220

220

220

220

220

190

87

74

71

70

67

67

67

68

70 

70

71

76

104

761

1.050 

947

849

730

619

8,464

273

16,790

Feb.

468

150

109

104 

103

101

101

101

96

98

100

100

100

101

101

98

92

90

89

88

86 

86

95

95

89

86

If

84

3,178

110

6,300

Mar.

76

76

76

76 

76

76

75

78

78

76

76

76

75

75

75

72

71

71

70

70

70 

70

68

68

68

70

72 

68

67

68

68

2,251

72.6

4,460

Apr.

68

71

67

74 

67

63

60

61

58

_52

55

61

160

114

86

75

71

70

70

70

68 

67

67

70

68

68

70 

65

64

65

2,141

71.4

4,250

May

61

58

57

57 

56

57

57

56

66

74

67

64

61

54

48

47

46

44

46

49

54 

81

187

191

195

195

197 

197

197

195

193

3,007

97.0

5,960

June

189

187

191

m

195

195

195

150

76

65

58

52

50

52

53

57

57

57

57

54 

54

53

54

54

52

50 

50

50

50

2,847

94.9

5,650

July

52

52

50

50 

49

49

48

48

48

42

41

40

39

40

43

44

43

41

40

39

39 

39

38

38

41

63

43

46

47

47

48

1,387

44.7

2,750

Aug.

48

46

43

45 

45

41

57

56

55

.29

31

32

33

33

33

33

34

37

38

37

34 

34

33

33

32

34

37 

48

124

159

171

1,479

47.7

2,930

Sept.

179

185

185

181 

181

181

179

179

148

155

117

100

128

152

167

177

181

181

181

185

187 

187

187

185

185

185

185 

183

183

183

5,148

172

10,210

Calendar year 1955: Max 471 Mln 36 Mean 117 Ac-ft 84,710

Water year 1955-56: Max 1,030 Mln 29 Mean 98.2 Ac-ft 71,310

a No gage-height record; discharge estimated on basis of records for four nearby Santa Ana River 

stations.
SANTA MA RIVER BASIN 83

Santiago Creek at Santiago Dam, near Villa Park, Calif.

Location. Lat 33°47'10", long 117 t> 43'33", near west corner of lot 70 of Lomas de Santiago 

Grant, on upstream face near left side of Santiago Dam, 0.3 mile upstream from Fremont 

Canyon and 5.7 miles southeast of Villa Park, Orange County.

Drainage area.--63 sq mi, approximately.

Records available.--October 1931 to September 1956.

Gage. Staff gage read on last day of each month. Datum of gage is at mean sea level.

Average discharge. 25 years, 12,970 acre-ft per year (17.9 cfs); median of yearly mean 

discharge 7,800 acre-ft (11 cfs).

Remarks.--Records of runoff represent all water reaching Santiago Reservoir, including 

rainfall on the reservoir, computed on basis of records of storage, draft, spill, waste, 

leakage, and evaporation. This earth-fill dam was completed in December 1931. Capacity 

and area ratings for the reservoir are dated December 1930. Capacity of reservoir at 

spillway level (gage height, 790.0 ft), 25,000 acre-ft. Dead storage below lowest outlet included in these records. Water released to conduits as required for irrigation 

is called draft; water released back to creek is called waste. Spill, waste, and leakage, combined, represent all water passing down Santiago Creek from Santiago Dam. Minor 

diversions in basin above this reservoir.

Cooperation. Records of reservoir operation and draft furnished by Serrano and Carpenter 

Irrigation Districts and Irvine Co.

Revisions (water years). WSP 1121: 1932-36, 1938 (flood data).

Monthly runoff, water year October 1955 to September 1956

Month

Water Year 1955-56. .......

Santiago Reservoir

Gage 

height 

(feet)t

729.5 

727.2 

725.6 

725.6

-

744.1 

745.7 

747.0 

747.9 

746.8 

743.3 

737.9 

733.8 

729.6

-

Contents 

(acrefeet)

2,825 

2,493 

2,278 

2,278

-

5,688 

6,075 

6,400 

6,638 

6,350 

5,497 

4,260 

3,492 

2,840

-

Change 

in 

contents 

acrefeet)

-332 

-215 

0

-4,524

+3,410 

+387 

+325 

+238 

-288 

-853 

-1,237 

-768 

-652

+15

Draft 

(acrefeet)

425 

307 

79

6,356

242 

8 

132 

225 

653 

1,218 

1,577 

959 

848

6,673

Evaporation 

(acrefeet)

51 

39 

19

1,058

30 

68 

103 

74 

119 

145 

132 

109 

106

995

Spill 

waste, and 

leakage 

(acrefeet)

0 

0 

0

0

oooooooo o

0

Runoff 

(acrefeet)

144 

131 

98

2,890

3,682 

463 

560 

537 

484 

510 

472 

300 

302

7,683

t Gage height at 5 p.m. on last day of month.
84 SANTA ANA RIVER BASIN

Santiago Creek near Villa Park, Calif.

Location. Lat 33°49'22" , long 117°46'33", in NEiNE£SW£ sec. 13, T. 4 S., R. 9 W. , on right 

bank 1,4 miles downstream from Weir Canyon and 2.7 miles northeast of Villa Park.

Drainage area. 83.8 sq mi.

Records available. June 1920 to September 1956.

Gage. Water-stage recorder and concrete cutoff wall control. Altitude of gage is 420 ft 

Tfrom topographic map).

Extremes. Maximum discharge during year, 868 cfs Jan. 26 (gage height, 6.00 ft), from 

rating curve extended above 200 cfs on basis' of slope-area measurement of 3,300 cfs; no 

flow during most of year.

1920-56; Maximum discharge, 11,000 cfs Feb. 16, 1927 (gage height, 8.4 ft), from 

rating curve extended above 140 cfs on basis of slope-area determination of peak flow; 

maximum gage height, 9.40 ft Jan. 16, 1952; no flow for several months during each year.

Remarks. Records fair. Flow regulated by Santiago Reservoir (see preceding page). Diversions above station by Irvine Co. and Serrano and Carpenter Irrigation Districts.

Cooperation. Three discharge measurements furnished by Orange County Flood Control 

District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

(*)

O

0

0

Nov.

(*)

0

0

0

Dec.

(*)

0

O

0

Jan.

0

0

o

0

0

o

o

0

o

0

0

0

0

o

0

0

o

0

0

0

0

0

0

0

4.9

*219

*8O

*.9

.8

. 8

*.8

307.2

9.91

609

Feb.

0.6

.3

.4

.4

.4

.4

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.4

.2

0

0

0

*0

0

6.7

0.23

13

Mar.

0

0

0

0

0

0

0

0

0

0

o

.1

.1.1

0

0

o

o

0

0

0

0

0

0

0

0

0

0

*0

0

0

0.3

0.01

0.6

Apr.

0

o

o

0

0

o

0

0

0

0

0

.2

*1.0

.1

o

0

.4

.3

0

0

0

0

0

0

0

0

*.4

.1

0

0

2.5

0.08

5.0

May

0

0

0

0

0

0

0

0

.1

.1

o

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

*0

0

0

0.2

0.006

0.4

June

(*)

0

0

0

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 11 Mln 0 Mean 0.06 Ac-ft 43

Water year 1955-56: Max 219 Mln 0 Mean 0.87 Ac-ft 628

Discharge measurement or observation of no flow made on this day.
SANTA ANA RIVER BASIN 85 

Santiago Creek at Santa Ana, Calif.

Location (revised) . Lat 33°46'09", long 117°52'54", In NE^SW^NW^ sec. 1, T. 5 S., R. 10 

W., on left bank at end of Baker Street, Santa Ana, 2,400 ft upstream from mouth.

Records available. January 1929 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 110 ft, revised (from topographic map). 

Prior to June 22, 1948, at datum 0.96 ft higher.

Average discharge. 27 years, 5.48 cfs (3,970 acre-ft per year); median of yearly mean 

discharges, 0.8 cfs (580 acre-ft per year).

Extremes. Maximum discharge during year, 1,270 cfa Jan. 26 (gage height, 5.55 ft); no flow 

during most of year.

1929-56: Maximum discharge, 4,400 cfs Mar. 2, 1938 (gage height, 8.36 ft, present 

datum), from rating curve extended above 1,200 cfs by logarithmic plotting; maximum 

gage height, 9.85 ft Jan. 16, 1952; no flow during most of each year.

Remarks. Records fair. Plow regulated by Santiago Reservoir (see p. 83). Diversions 

above station by Irvine Co. and Serrano and Carpenter Irrigation Districts. During 

each winter season, some water originally diverted from Santa Ana River by Santa Ana 

Valley Irrigation Co.'s canal is occasionally wasted into Santiago Creek 3 miles above 

station.

Cooperation. Eight discharge measurements and one observation of no flow furnished by 

Orange County Flood Control District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

O

O

0

0

O

0

0

0

0

0

0

0

0

*1.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

1.1

0.04

2.2

Dec.

(*)

0

0

0

Jan.

0

O

0

0

0

0

0

0

0

0

O

0

O

0

0

0

0

0

0

0

0

0

0

0

*25

*376

*228

*.3

0

0

*2.2

631.5

20.4

1,250

Feb.

(«)

0

0

0

Mar.

(«)

0

0

0

Apr.

0

0

0

0

0

0

O

0

0

0

0

*12

2. 8

0

0

0

0

0

0

0

0

0

0

0

0

*1.6

*.5

0

0

0

16.9

0.56

34

May

0

0

0

0

June

C)

0

0

0

July

C)

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 6.7 Mln 0 Mean 0.06 Ac-ft 46

Water year 1955-56: Max 376 Mln 0 Mean 1.77 Ac-ft 1,290

Discharge measurement or observation of no flow made on this day.

493801 O - 59 - 7
SANTA ANA RIVER BASIN

Santa Ana River at Santa Ana, Calif.

Location (revised) . Lat 33°44'56", long 117°54'30", in NW^SWiSEi sec. 10, T. 5 S., R. 10 

¥., on right pier of Fifth Street Bridge in Santa Ana, 1.8 miles downstream from 

Santiago Creek.

Records available . --January 1923 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 80 ft (from topographic map). Jan. 3, 

1923, to Jan. 24, 1929, at datum 1.00 ft higher. Jan 25, 1929, to June 20, 1948, at 

site 450 ft upstream at different datum.

Average discharge . 16 years (1940-56) 17.2 cfs (12 500 acre-ft per year); median of yearly 

mean discharges, 2.2 cfs (1,600 acre-ft per year).

Extremes . --Maximum discharge during year, 1,040 cfs Jan. 26 (gage height, 5.38 ft); no flow 

at times during several months .

1923-56: Maximum discharge, 46,300 cfs Mar. 3, 1938 (gage height, 10.20 ft, former 

site and datum) , on basis of slope-area determination of peak flow; no flow during 

several months each year.

Remarks . Records fair. Natural flow affected by ground -water withdrawals, diversions,

importation from Metropolitan Water District, municipal use, return flow from irrigation, 

and several storage reservoirs, including Prado flood-control reservoir (capacity, 

222,800 acre-ft), and Big Bear Lake (see p. 47 ). At times there are small amounts of 

return irrigation water from Santa Ana Valley Irrigation Co.'s drain 1,500 ft upstream.

Cooperation. Five discharge measurements furnished by Orange County Flood Control District.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1 *} \ )

0

0

0

Nov.

0.1

0

0

0

0

0

0

0

0

0

0

0

0

4.7

0

.2

.2

.3

.1

.1

.1

.1

.1

.1

0

0

0

0

.1 *.l

6.3

0.21

12

Dec.

0.1

.1

.2

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0.6

0.02

1.2

Jan.

0.1

.1

0

0

0

0

.1

.3

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.2

56

*446

 250

*.6

252

*387

*Z94

1,686.6

54.4

3,350

Feb.

158

*27

*.5

.2

.3

.2

*.3

.2

*.

*.

188.9

6.51

375

Mar.

0.1

T

0°

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0.7

0.02

1.4

Apr.

0

7J

0

0

0

0

0

0

0

0

0

~2.5 11

0

0

2.1

2.5

0

0

0

0

0

0

0

0

2.2

*.8

0

0

0

21.1

0.70

42

May

0

7J

0

0

0

0

0

0

.6

0

0

0

0

0

0

0

0

0

0

0

.1

.2

.6

.5

.5

.5

.1

.4

*1.4 <r~

1.0

5.9

0.19

12

June

0 8

1 2

1

5

3

0

7J

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

.1

.1

3.1

0.10

6.1

July

0

7J

.1

0

0

0

0

0

0

.1

.1

.1.1

.1

.1

.1

0

0

0

0

.1

0

0

0

0

0

0

0

0

*0

0

0.9

0.03

1.8

Aug.

(*)

0

0

0

Sept.

0-5

0

0

0

.1

0

0

0

.1

0

0

0

.2

1.5

.8

0

0

0

0

0

.1

.4

.4

.1

0

0

0

0

0

3.7

0.12

7.3

Calendar year 1955: Max 12 Mln 0 Mean 0.19 Ac-ft 136

Water year 1955-56: Max 446 Min 0 Mean 5.24 Ac-ft 3,810

Discharge measurement or observation of no flow made on this day.
SAN GABRIEL RIVER BASIN 87

East Pork San Gabriel River near Camp Bonita, Calif.

Location. --Lat 34°14'08", long 117°48'16", in NEiNE^ sec. 27, T. 2 N., R. 9 W. , on right 

bank 1,600 ft upstream from mouth of Graveyard Canyon, 2.5 miles upstream from confluence with West Pork, and 2.5 miles west of Camp Bonita.

Drainage area. 88.2 sq mi.

Records available. December 1932 to September 1956.

Gage . --Water-stage recorder. Datum of gage is 1,567.04 ft above mean sea level (levels by 

Tos Angeles County Flood Control District). Prior to Dec. 10, 1938, at site 0.6 mile 

downstream at different datum.

Average discharge . --23 years (1933-56), 71.1 cfs (51,470 acre-ft per year); median of 

yearly mean discharges, 48 cfs (34,800 acre-ft per year).

Extremes . --Maximum discharge during year, 1,020 cfs Jan. 26 (gage height, 10.23 ft); minimum daily, 11 cfs Sept. 9-19, 22-30.

1932-56: Maximum discharge, 46,000 cfs Mar. 2, 1938, from rating curve extended 

above 21,300 cfs by logarithmic plotting (computed by Geological Survey); minimum, 

1.5 cfs Oct. 1, 1934.

Cooperation . Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

14

14

14

14

14

14

14

13

14

14

14

14

13

13

14

14

14

14

14

14

14

15

T4

14

14

14

14

14

13

13

14

430

13.9

853

Nov.

14

14

14

14

14

13

12

13

13

13

13

14

14

21

18

17

17

16

16

15

22

20

19

18

18

17

16

16

16

16

473

15.8

938

Dec.

17

18

T7

18

18

18

18

17

17

17

16

16

16

16

16

16

16

16

16

16

15

15

16

16

16

16

17

17

17

17

17

514

16.6

1,020

Jan.

17

17

17

17

16

16

16

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

15

24

422

T59~ 476

111

97

86

1,776

57.3

3,520

Feb.

75

65

62

58

55

54

52

51

49

4S

46

46

45

44

44

44

44

42

39

38

37

35

48

57

46

44

41

39

39 -

1,387

47.8

2,750

Mar.

38

37

36

34

34

34

35

34

33

33

33

34

34

34

33

33

32

31

32

31

31

31

31

30

29

30

29

30

30

28

2?

1,003

32.4

1,990

Apr.

32

31

29

29

27

27

25

24

24

25

26

40

50

39

37

39

44

48

48

49

51

49

48

45

42

58

 go 66

55

55

1,222

40.7

2,420

May

54

51

49

48

48

48

46

44

83

86

85

86

83

77

74

72

70

68

66

63

62

60

58

60

58

5%

55

52

52

51

49

1,913

61.7

3,790

June

48

45

42

41

39

39

38

37

37

36

37

36

35

36

37

36

36

35

34

34

34

33

32

31

29

27

25

24

¥4

25

1,042

34.7

2,070

July

25

28

?8- 29

25

24

23

24

22

21

21

22

22

21

20

20

19

19

18

18

18

18

18

18

19

19

19

18

18

17

T7

648

20.9

1,290

Aug.

17

17

18

T7

16

16

16

15

15

15

15

14

13

13

13

14

14

15

14

13

13

12

12

12

12

13

13

15

15

15

14

446

14.4

885

Sept.

13

12

12

13

12

12

12

12

11

IT

11

11

11

11

11

11

11

11

11

12

12

11

11

11

11

11

11

11

11

11

342

11.4

678

Calendar year 1955: Max 105 Min 12 Mean 34.8 Ac-ft 25,170

Water year 1955-56: Max 476 Min 11 Mean 30.6 Ao-ft 22,200
88 SAN GABRIEL RIVER BASIN

West Pork San Gabriel River at Camp Rincon, Calif.

Location. Lat 34°14'30", long 117°51'50", in SE£ sec. 19, T. 2 N., R. 9 W., on right bank 

0.2 mile upstream from Camp Rincon, 0.5 mile downstream from North Pork, and 6 miles 

downstream from Cogswell Dam.

Drainage area. 102 sq mi.

Records available. October 1927 to September 1956 .

Gage. Water -stage recorder. Datum of gage Is 1,474.94 ft above mean sea level (levels by 

Los Angeles County Flood Control District). Prior to Nov. 19, 1930, at site If miles 

downstream at different datum.

Average discharge. 29 years, 64.8 cfs (46,910 acre -ft per year); median of yearly mean 

discharges, 36 cfs (26,100 acre-ft per year).

Extremes . Maximum discharge during year, 1,230 cfs Jan. 26 (gage height, 10.97 ft); minimum daily, 2.8 cfs Nov. 8-11.

1927-56: Maximum discharge, 34,000 cfs (estimated) Mar. 2, 1938; no flow st times 

in 1928-29.

Remarks . Flow regulated by Cogswell flood-control reservoir (capacity, 10,630 acre-ft).

Cooperation. Records furnished by Los Angeles. County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14,

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

«

13

13

13

13

13

13

13

13

13

13

13

13

13

13

12

13

12

13

13

12

12

11

TT

11

12

12

11

11

11

385

12.4

764

Nov.

tt

11

11

5.7

4.1

3.2

^SL

2.8

2.8

2.8

3.1

3.4

7.6

6.5

5.5

5.3

5.3

4.9

4.7

6.0

6.5

6.3

6.1

5.9

5.5

5.1

5.1

5.3

5.5

171.8

5.73

341

Dec.

5.7 

6.3

6.3

7.1

7.3

7.8 "S7S

7.0

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.3

6.3

6.3

6.3

6.5

6.5

.0

.2

.4

.4

211.7

6. S3

420

Jan.

7.7 

7.7

7.4

7.4

7.2

7.2

7.2

7.0

775

7.0

7.2

7.0

7.0

7.0

7.0

7.0

7.0

7.2

7.2

7.2

7.2

7.2

7.2

7.2 -is

504

?7?

98

60

48

46

1,213.4

39.1

2,410

Feb.

38 

52

29

27

25

23

22

21

20

19

18

17

16

16

16

15

15

15

15

14

14

14

20

24

19

17

16

16

15

568

19.6

1,130

Mar.

«

14

14

14

14

14

14

13

13

13

13

12

12

12

12

12

11

11

11

11

11

11

9.9

9.6

9.9

9.6

9.9

9.9

9.6

9.6

370.0

11.9

734

Apr.

il 

11

15

15

15

14

14

13

14

14

15

50

69

T5

37

36

37

38

37

40

40

38

38

38

36

51

53

46

43

42

966

32.2

1,920

May

40

38

36

35

34

34

33

32

72

OT

58

52

48

43

41

38

38

36

35

34

32

31

30

31

31

30

30

29

29

28

27

1,173

37.8

2,330

June

26 

21

24

24

24

24

23

18

16

16

15

14

14

15

16

16

15

14

14

14

15

14

14

13

13

12

11

TT1111

491

16.4

974

July

13

TS

12

12

12

11

11

11

10

9.3

9.3

9.3

9.3

9.3

8.9

8.9

8.6

8.6

8.6

8.2

7.9

7.7

7.9

7.3

7.3

7.1

7.3

7.0

6.4

67S

6.6

281.4

9.08

558

Aug.

6.8

7.1

7.1

7.1

6.8

6.8

6.6

6.6

6.6

6.4

6.4

6.2

6.2

6.2

5.8

6.8

6.8

6.6

6.6

6.6

6.4

6.2

6.0

6.2

6.6

7.0

7.1

7.1

7.1

7.3 773

206.4

6.66

409

Sept.

7.0 

175

6.4

6.2

6.2

6.0

6.0

5.8

5.6

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.2

6.6

6.6

6.4

6.4

6.4

6.4

6.2

4.7

5.0

4.5

477

180.1

6.00

357

Calendar year 1955: Max 83 Mln 2.8 Mean 17.4 Ao-ft 12,630

Water year 1955-56: Max 504 Mln 2.8 Mean 17.0 Ao-ft 12,350
SAN GABRIEL RIVER BASIN 

San Gabriel River near Azusa, Calif.

89

Location (revised). Lat 34-10'11", long 117°53'16", in SW£NW&3W£ sec. 13, T. 1 N., R. 10 

W., on right bank 1.1 miles downstream from Morris Dam and 2.7 miles northeast of Azusa.

Drainage area. 211 sq mi.

Records available. May 1894 to September 1956.

Gage. Water-stage recorder. Datum of gage is 867.59 ft above mean sea level (from Los 

Angeles County Flood Control District benchmark). Prior to August 1917. staff gages 

and August 1917 to Sept. 30, 1937, water-stage recorders at several sites from li to 

2 miles downstream at different datum. Oct. 1, 1937, to Feb. 21, 1938 water-stage 

recorder at site half a mile downstream at different datum. Feb. 22, 1938, to Feb 7 

1939, water-stage recorder at site a quarter of a mile upstream at different datum! ' 

Datum lowered 4.35 ft May 9, 1950.

Average discharge. 61 years (1895-1956), 152 cfs (110,000 acre-ft per year), adjusted for 

diversions, importations, regulation, and evaporation, in Cogswell, San Gabriel, and 

Morris Reservoirs; median of yearly mean adjusted discharges, 110 cfs (79.600 acre-ft 

per year).

Extremes. Maximum discharge during year, 45 cfs Sept. 30 (gage height, 5 48 ft)- no flow 

during most of year.

1894-1956: Maximum, discharge, 65,700 cfs Mar. 2, 1938, by computation of peak flow 

over Morris Dam; no flow for several months in most years.

Remarks.--Records poor. Flow regulated by Cogswell and San Gabriel flood-control reservoirs (combined capacity, 54,500 acre-ft) and by Morris Reservoir (capacity, 35,000 

acre-ft). Azusa Canal diverts above high-water level of Morris Reservoir about 3 miles 

above station. The Metropolitan Water District of Southern California reports a discharge of 463 acre-ft of Colorado River water into San Gabriel below Morris Dam and 

above station during the 1956 water year. They also furnished records of adjusted runoff for San Gabriel River computed on basis of flow in river above Morris Reservoir 

plus Azusa Canal, adjusted for storage and evaporation in Cogswell, San Gabriel, and 

Morris Reservoirs, as shown in table below. These figures of runoff are equivalent to 

combined records of San Gabriel River and Southern California Edison Co.'s canal as 

nublished from 1894 to 3933.

Month

December. .............

Calendar year 1955..

Adjusted runoff 

(acre-feet)

1,120

1,350

i 1,510

38,270

8,090

4,450

3,040

Month

April..................

May....................

June ...................

July................... 

August .................

September. .............

Adjusted runoff; 

(acre-feet)

4,650

5,860

2,780

1,620 

1,080

825

Cooperation. One observation of no flow furnished by Los Angeles County Flood Control

District. 

Revisions (water years). WSP 551: Drainage area. WSP 961: 1941.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

(*)

0

0

0

Nov.

0

0

0

Dec.

(*)

(*)

0

0

0

Jan.

0

3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

o

0

0

0

0

*0

0

0

4.1

271

.8.1

0

7.1

0.23

14

Feb.

(*)

0

0

0

Mar.

(*)

0

0

0

Apr.

(*)

0

0

0

May

0

0

0

June

(*)

0

0

0

July

(*)

0

0

0

Aug.

0

3

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

8.2

172

*4.7

.3

0

0

0

0

0

O

1.2

3.1

.2

0

25,9

0.84

51

Sept.

O

3

0

0

0

0

O

0

0

0

0

0

0

0

0

o

0

o

0

0

0

0

0

0

0

0

0

13

43

56

1.9

111

Calendar year 1955: Max 9.9 Mln 0 Mean 0.12 Ac-ft 86

Water year 1955-56: Max 43 Mln o Mean 0.24 Ac-ft 176

Discharge measurement or observation of no flow made on this day.
90 SAN GABRIEL RIVER BASIN

Rogers Creek near Azusa, Calif.

Location. Lat 34°09'55", long 117°54'20", in NW^NW^ sec. 23, T. IN., R. 10 W. , on left 

bank 0.5 mile upstream from inouth and 2.2 (revised) miles north of Azusa.

Drainage area. 6.4 sq mi, approximately.

Records available. October 1917 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 800 ft (from topographic map).

Average discharge. 39 years, 2.94 cfs (2,130 acre-ft per year); median of yearly mean discharges, 1.5 cfs (1,100 acre-ft per year).

Extremes. Maximum discharge during year, 485 cfs Jan. 26 (gage height, 6.40 ft); no flow 

during several months.

1917-56: Maximum discharge, about 2,600 cfs Apr. 7, 1926; no flow during parts of 

each year.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements or observations of no flow generally made twice a month. Diversion above station for irrigation of about 20 acres below station.

Cooperation. Three discharge measurements and on©observation of no flow furnished by Los 

Angeles County Flood Control District.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 1-6, 13-16, Feb. 2O to July 8)

2.1 

Z.Z

2.3

2.4

2.5

2.6

2.7

0

.1

.2

.5

1.0

1.8

2.9

2.8

3.0 

3.2 

3.5 

4.0 

4.6

4.4

9.4

17

34

73

140

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Dot.

O

O

O

Nov.

0

0

0

Dec.

O

O

O

O

O

O

O

O

O

0

0

0

0

0

0

0

0

0

0

0

0

O

.1

.1.1

.1.1.1

.1.1

.1

0.9

0.03

1.8

Jan.

0.1

.1

.1

.1

O

O

O

O

O

O

O

0

0

O

O

0

0

0

0

0

0

0

.1.1

3.O

~48 139

as

a5

4.6

5.0

211.2

6.81

419

Feb.

3.4

a3

a3

a2.5

a2.5

a2

a2

a2

al.5

1.4

1.4

1.3

1.2

1.2

1.2

1.2

1.1

1.1

1.0

T75

1.0

1.0

4.2

3.6

2.3

2.0

1.8

1.7

1.6

54.2

1.87

108

Mar.

1~4 1.5

1.3

1.4

1.3

1.2

1.2

1.2

1.1

1.1

1.0

.9

.9

.9

.9

.8

.8

.7

.7

.7

.7

.7

.7

.6

.6

.6

.5

.5

.4

7J

.4

27.3

0.87

54

Apr.

0.5

.5

.5

.4

.4

.3

73

.3

.3

.4

.5

3.4

4.8

27T

1.6

1.4

1.3

1.2

1.1

1.0

.9

.8

.8

.8

.7

2.3

2.3

1.6

1.3

1.2

35.3

1.18

7O

May

1.2

1.1

1.0

1.0

_J3

.9

.9

.9

6.5

57?

3.6

2.9

2.4

2.0

1.8

1.6

1.4

1.3

1.2

1.2

1.2

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.1

1.0

.9

51.4

1.66

102

June

0.8

TT

.6

.5

.5

.5

.5

.4

.4

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

O

O

O

8.5

0.28

17

July

0

<3

O

O

_a

o

o

0

0

0

o

0

0

o

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

Aug.

o

0

o

Sept.

0

0

0

Calendar year 1955: Max 7.8 Mln 0 Mean 0.41 Ac-ft 296

Water year 1955-56: Max 139 Mln 0 Mean 1.O6 Ac-ft 772

Peak: discharge (base. 35 cfs). Jan. 26 (4 p.m.) 485 cfs (6.40 ft).

a No gage-height record; discharge Interpolated or estimated on basis of probable recession and 

weather records.
SAN GABRIEL RIVER BASIN 91

Pish Creek near Duarte, Calif.

Location. Lat 34°10'00", long 117°55'25", in SW^SW^ sec. 15, T. IN., R. 10 W., on left 

bank 0.8 mile upstream from mouth of canyon and 3 miles northeast of Duarte.

Drainage area. 6.5 sq mi, approximately.

Records available. July to September 1916, July 1917 to September 1956.

Gage. Water-stage recorder and broad-crested weir since July 28, 1917. Altitude of gage 

is 1,000 ft (from topographic map). Prior to July 28, 1917, staff gage at same site at 

different datum. July 28, 1917, to Mar. 2, 1938, water-stage recorder at same site at 

different datum (destroyed by flood of Mar. 2, 1938). Mar. 3 to Dec. 7, 1938, staff 

gage at same site at different datum. Dec. 7, 1938, to Oct. 3, 1951, water-stage re-, 

corder at same site at datum 1 ft higher.

Average discharge. 39 years (1917-56), 3.95 cfs (2.860 acre-ft per year); median of yearly 

mean discharges, 2.5 cfs (1,800 acre-ft per year).

Extremes. Maximum discharge during year, 544 cfs Jan. 26 (gage height, 4.67 ft); no flow 

Oct. 1 to Nov. 13, July 20 to Aug. 28, Sept. 2-30.

1916-56: Maximum discharge, about 2,180 cfs Apr. 4, 1925; no flow during periods in 

occasional years.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made twice a month.

Cooperation. Pour discharge measurements furnished by Los Angeles County Flood Control 

District.

Revisions (water years). WSP 706: 1926.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

o

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

.2

.1

.1

.2

.2

.2

.2

.7

.4

.2

a. 2

a. 2

a. 2

a. 2

.2

.2

.3

4.0

0.13

7.9

Dec.

0.4

.7

73

74

.4

.4

.3

.3

a. 3

a. 3

a. 3

a. 3

a. 3

.3

a. 3

a. 3

a. 3

a. 3

a. 3

a. 3

a. 3

a. 3

a. 4

a. 5

a. 5

a. 5

a. 5

.5

.5

.5

.5

11.8

0.38

23

Jan.

0.

e'.:

-gr 155

12

6.5

5.3

5.1

260.5

8.40

517

Feb.

4.9

4.6

4.6

4.6

a4

a3.5

a3

a2.5

a2

1.6

1.6

1.5

1.5

1.5

1.4

1.3

1.2

1.2

1.2

1.2

1.2

1^1

576

STS

3.9

3.3

2.7

2.3

2.2

77.8

2.68

154

Mar.

2.1

270

.7

.6

.6

.5

.4

.3

.3

.2

.3

.2

.2

.2

.1

.1

.0

.0

.0

.0

1.0

1.0

.9

.9

.9

.9

.9

tt

 8

 °

36.5

1.18

72

Apr.

1.2

1.1

1.1

.9

' .il

.8

.8

.8

.8

.9

1.1

8.4

9.9

57F

3.9

3.0

2.6

2.3

1.8

1.4

1.2

1.0

.8

1.0

.8

3.8

3.9

2.9

2.3

2.2

69.1

2.30

137

May

2.1

1.8

1.7

1.7

1.6

1.5

1.4

1.3

7^j

578

4.2

3.8

3.6

3.2

2.7

2.1

2.0

1.7

1.6

1.6

1.8

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.5

1.4

1.1

70.9

2.29

141

June

1.0

.8

.8

.8

1.0

1.0

1.0

.9

.9

.8

.7

.7

.5

.5

.7

.8

.7

.7

.8

.7

.8

.7

.6

.5

.5

.4

.3

.2

72

.2

20.2

0.67

40

July

0.

7

!i

0

0

0

0

0

0

0

0

0

0

0

o

3.7

0.12

7.3

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

o

0

0

0

0

.1

.1

.1

0.3

0.01

0.6

Sept.

0.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0.1

0.003

0.2

Calendar year 1955 : Max 15 Mln 0 Mean 0.74 Ac-ft 532

Water year 1955-56 : Max 155 Min o Mean 1.52 Ac-ft 1,100

Peak discharge (base, 60 cfs). Jan. 26 (4:30 p.m.) 544 cfs (4.67 ft).

a No gage-height record; discharge estimated on basis of recorded range in stage, weather records,

and records for Rogers Creek near Azusa.

San Gabriel River below Santa Pe Dam, near Baldwin Park, Calif.

Location (revised) . Lat 34°06'44" , long 117°58'07", in SE^NE^SW^ sec. 6, T. IS., R. 10 

W., on left bank at stilling basin of outlet of Santa Pe flood-control dam, 500 ft 

downstream from axis of dam, and 1.7 miles north of Baldwin Park.

Drainage area. 231 sq mi.

Records available. October 1942 to September 1956.

Gage. Water-stage recorder. Datum of gage is 400.00 ft above mean sea level (levels by 

(Torps of Engineers).

Extremes. No flow during year.

19*42-56: Maximum discharge, 6,700 cfs Jan. 24, 1943; no flow during several months 

of each year.

Remarks. No flow since Dec. 16, 1952. Observations of no flow generally made once

a month. Plow regulated by Cogswell and San Gabriel flood-control reservoirs (combined 

capacity, 54,500 acre-ft), Morris Reservoir (capacity, 35,000 acre-ft), Santa Pe floodcontrol reservoir (capacity, 36,800 acre-ft), and several small flood-control reservoirs (combined capacity, 19,100 acre-ft). Diversions above station for irrigation, 

power development, and ground-water replenishment. There was no flow diverted by the 

Los Angeles County Flood Control District above station through the Santa Pe channel 

to headwaters of Rio Hondo during year.
98 SAN GABRIEL RIVER BASIN

San Dimas Creek near San Dimas, Calif.

Location. Lat 34°09'09", long 117°46'18", in SW^SE^ sec. 24, T. 1 N., R. 9 W., on left 

bank at mouth of San Dimas Canyon, 0.7 mile downstream from San Dimas Dam and 3 miles 

northeast of San Dimas.

Drainage area. 18.3 sq mi.

Records available.--December 1916 to September 1956 (discontinued).

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is ? 365 ft (from 

topographic map). Prior to Oct. 21, 1953, at datum 1.00 ft higher.

Average discharge. 39 years (1917-56), 4.34 cfs (3,140 acre-ft per year); median of 

yearly mean discharges, 2.6 cf3 (1,900 acre-ft per year).

Extremes. Maximum discharge during year, 90 cfs Jan. 26 (gage height, 3.05 ft); no flow 

at times during several months.

1916-56: Maximum discharge, 5,000 cfs Mar. 2, 1938, from records of release at 

San Dimas flood-control dam and computed inflow between dam and gaging station; no 

flow during parts of many years.

Remarks.--Records good. Discharge measurements or observations of no flow generally made 

three times a month. Flow regulated by San Dimas flood-control dam (capacity, 1,042 

acre-ft). Diversions for irrigation of small acreage just above station.

Cooperation. Twenty-two discharge measurements and two observations of no flow furnished 

by Los Angeles County Flood Control District.

Revisions (water years).--WSP 1061: 1938(M).

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 8-13, May 17-29)

1.0 0 2.0 14

1.1 .6 2.3 23

1.3 2.6 2.6 41

1.6 6.5 2.7 49

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30 

31

Total

Mean

AC-ft

Oct.

O

0

0

0

0

0

.6

3.7

4.2

4.5

4.6

475

2.7

.6

.3

.1

.1

.1

.1

.1

.1 

.1

0

0

0

0

0

0

0

0

o

26.4

0.85

52

Nov.

0

O

0

Dec.

0

0

0

Jan.

O

0

0

o

0

0

0

0

0

0

o

0

0

0

.1

.1

0

0

0

0

0 

0

0

0

.1

29

43

14

12

9 3

8*1

115.7

3.73

229

Feb.

3.3

.4

.4

.4

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.2

.2

.2

10.0

0.34

20

Mar.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4.0

0.13

7.9

Apr.

0.1

.1

.1

.1

.1

.1

.1

.6

.8

.7

.5

.8

.7

.4

.3

.3

.3

.4

.6

.6

.6 

.6

.7

.7

.8

.9

.4

.4

.4

.4

13.6

0.45

27

May

0.4

'.1

.6

.6

.6

.6

.7

1.1

T7T

1.1

1.0

1.0

.9

.8

.7

.6

.6

.6

.7

.8 

.8

.8

.8

.8

.8

.7

.6

.6 

. 6

.7

23.1

0.75

46

June

0.7

.7

.7

.7

.7

.8

77

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

tt

.4

.4

.4

.4

.4

.5

.5 

.5

16.2

0.54

32

July

0.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4 

.4

.4

.4

3.5

4.1

4.1

3.9

3.9

3*8

4.1

36.8

1.19

73

Aug.

.5

.3

.3

.5

.6

.6

.6

.6

.6

4.6

4.6

4.6

4.3

3.1

4.2

4.7

4.6

4.6

4.5

4.3

4.5 

5.0

5.3

571

4.8

4.8

5.0

5.1

4.7 

4.7

4.7

143.2

4.62

284

Sept.

4.7

476

3.5

.3

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

0

0

o

0

0

0

o

0

o

o

0

14.3

0.48

28

Calendar year 1955: Max 6.0 Mln 0 Mean 0.89 Ac -ft 647

Water year 1955-56: Max 43 Mln 0 Mean 1.10 Ac-ft 799
SAN GABRIEL RIVER BASIN 93

Dalton Creek near Glendora, Calif.

Location. La t 34°09'30", long 117°49'40", in center of sec. 21, T. 1 N., R. 9 W., on 

right bank 0.6 mile upstream from mouth of canyon, 1.7 miles downstream from Big 

Dalton Dam, and 2.6 miles northeast of Glendora.

Drainage area. 7.5 sq mi, approximately.

Records available. December 1919 to September 1956.

Gage.--Water-stage recorder and broad-crested weir. Altitude of gage is 1,170 ft (from 

topographic map). Prior to Aug. 26, 1953, at datum 1.00 ft higher.

Average discharge. 36 years (1920-56), 1.07 cfs (775 acre-ft per year); median of yearly 

mean discharges, 0.3 cfs (220 acre-ft per year).

Extremes.--Maximum discharge during year, 152 cfs Jan. 26 (gage height, 3.05 ft); no flow 

during several months.

1919-56: Maximum discharge, about 850 cfs Mar. 2,'1938, from record of release 

from Big Dalton Reservoir; no flow for several months each year.

Remarks. Records good. Discharge measurements or observations of no flow generally made 

three times a month. Plow regulated by Big Dalton flood-control reservoir (capacity, 

950 acre-ft). Glendora Irrigation Co. diverted 68 acre-ft during year at diversion 

dam 1.5 miles above station.

Cooperation. Eleven discharge measurements and one observation of no flow furnished by 

Los Angeles County Flood Control District.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Feb. 18-25, May 3O to June 7, Aug. 7)

1.1 1 1.7 3.4

1.2 2 1.8 5.8

1.3 4 1.9 9.0

1.4 7 2.1 19

1.5 1 2 2.2 25

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac-ft

Oct.

0

O

0

Nov.

O

(J

O

o

0

0

2.3

8.0

12

T.5

O

0

0

o

o

o

0

0

0

0

o

0

o

0

0

0

o

0

0

0

 

26.8

0.89

53

Dec.

0

0

O

Jan.

0

(J

O

o

0

0

o

0

0

0

0

o

0

o

0

0

0

0

o

0

o

0

o

0

0

-5.7 24

1.7

1.1

.8

1.0

34.3

1.11

68

Feb.

0.6

.4

.3

.3

.3

.3

.3

.2

72

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.5

.4

.3

.3

.2

.2

.2

 ..-

 

8.4

0.29

17

Mar.

0.1

.1

.1

.1

.1

.1

.1

-J

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

Off

o

0

2.8

0.09

5.6

Apr.

~7T 0.1

.1

.1

0

0

o

0

0

0

0

.1.1

o

0

.1

.1

.1

.1

.1

.1

.1.1

.1.1

.1.1.1

.1.1

 

2.1

0.07

4.2

May

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

.1.1

3.0

0.10

6.0

June

"7T 0.1

.1

O

o

0

o

o

0

0

0

0

o

o

0

0

0

0

0

0

o

0

0

o

o

o

0

0

0

 o

 

0.3

0.01

0.6

July

0

O

O

Aug.

0

O

0

O

0

0

12

25

23

7.8

0

0

0

0

0

0

O

0

0

0

0

O

0

0

0

O

0

0

0

0

0

67.8

2.19

134

Sept.

______

O

0

o

Calendar year 1955: Max 12 Mln o Mean 0.09 Ac-ft 65

Water year 1955-56: Max 25 Min O Mean O.40 Ac-ft 288
94 SAN GABRIEL RIVER BASIN

Little Dalton Creek near Glendora, Calif.

Location (revised) . La t 34°10'03", long 117*50'15", in ME^SE^SE^ sec. 17, T. IN., R. 

9 W., on left bank 0.2 mile upstream from Angeles National Forest boundary and 

2.6 miles northeast of Glendora.

Drainage area. 2.7 sq mi, approximately.

Records available. December 1938 to September 1956. January 1929 to November 1938 at 

site 0.8 mile downstream; records not equivalent as flow diverted Just above station 

is not included.

Gage. Water-stage recorder. Datum of gage is 1,334.38 ft above mean sea level (levels 

by Los Angeles County Flood Control District).

Average discharge.--18 years (1938-56), 0.68 cfs (492 acre-ft per year); median of yearly 

mean discharges, 0.3 cfs (220 acre-ft per year).

Extremes.--Maximum discharge during year, 180 cfs Jan. 26 (gage height, 1.86 ft); no flow 

during several months.

1938-56; Maximum discharge, 198 cfs Feb. 22, 1944; no flow at times each year. 

Flood of Mar. 2, 1938, 960 cfs (estimated). Flood of February 1914, 1,020 cfs, 

estimated on basis of slope-area determination of peak flow.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

V

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

.1

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

Dec.

0

0

0

Jan.

0

0

0

0

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

50

15

2.7

2.0

1.6

1.1

72.5

2.34

144

Feb.

0.9

.8

.6

.6

.6

.6

.5

.4

.4

_J5

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

1.7

ITT

.9

.8

.7

.6

.5

15.6

0.54

31

Mar.

0.4

.3

.4

.4

.4

.3

.3

.3

.2

.2

.2

.1

.1

.1

.1

.1

0

^

.1

.1

0

.1

0

0

0

.1

.1

0

0

0

.1

4.5

0.15

8.9

Apr.

0.1

.2

.1

0

0

.1.1

.1

.1.1

,1

.8

1.1

.5

.4

,3

.3

.2

.2

.1

.1

O

.1

.1.1

.6

.5

.4

.3

.3

7.4

0.25

15

May

0.3

.2

.2

.2

.2

.2

.2

.2

1.0

.7

.6

.5

.4

.3

.3

.1

.1

.1

.1

.1

0

V

o

0

0

0

0

0

0

0 

0

6.0

0.19

12

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 6.1 Mln 0 Mean 0.06 Ac-ft 45

Water year 1955-56: Max 50 Mln o Mean 0.29 Ac-ft 211
SAN GABRIEL RIVER BASIN 95

San Gabriel River above Whlttler Narrows Dam, Calif.

Location. Lat 34°02'00", long 118°02'14", In La Puente Grant, on downstream side of 

bridge near the center, on San Gabriel River Parkway, 0.8 mile downstream from San 

Jose Creek flood channel, l£ miles upstream from axis of Whlttler Narrows Dam, and 

1.8 miles south of El Monte, Los Angeles County.

Records available. October 1955 to September 1956.

Gage. Water-stage recorder since Dec. 7, 1955. Altitude of gage Is 220 ft (from topographic map).

Extremes. Maximum discharge during year not determined,occurred Jan. 26 (gage height, 

8.16 ft, from floodmarks); no flow during most of year.

Remarks. Records fair below 300 cfs an! poor above. Discharge measurements or observations of no flow generally made threa times a month. Flow regulated by San Gabriel and 

Cogswell flood-control reservoirs (combined capacity, 54,500 acre-ft), Morris Reservoir 

(capacity, 35,000 aore-ft), Santa Fe flood-control reservoir (capacity, 36,800 acre-ft), 

and several small flood-control reservoirs (combined capacity, 19,100 acre-ft). Many 

diversions above station for Irrigation, power development, and ground-water replenishment. Colorado River water Is released from Puddingstone Reservoir down Walnut Creek 

to San Gabriel River for ground-water replenishment In the San Gabriel River and Rio 

Hondo basins. At times flow Is diverted from San Gabriel River below Santa Fe Dam to 

Rio Hondo. San Jose flood channel diverts all flows above 200 cfs from San Jose Creek 

to San Gabriel River above station.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

(t)

oot.

0

0

0

0

Nov.

90

224

233

229

236

223

219

212

214

217

210

202

201

111

232

227

63

1

203

245

172

205

235

229

226

227 

216

215

224

221

5,952

198

11,810

11,630

Dec.

173

133

163

87

19

138

100

243

221

221

229

253

253

253

268

221

221

253

245

237

237

260

61

0

0

0 

0

0

0

0

0

4,489

145

8,900

8,900

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

4,000 

400

0

0

0

0

4,400

142

8,730

0

Feb.

0

0

0

0

Mar.

0

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

^0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

14

0.47

28

0

May

-Q0

0

0

0

0

0

0

13

0

70

237

229

215

215

229

229

"2~53 253

253

229

215

215

125

.1

0 

0

0

0

0

0

2,980.1

96.1

5,910

5,890

June

. _

0

0

0

0

July

0

0

0

0

Aug.

0

0

0

0

Sept.

 Q0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.3

156

197

203

209

215

229

221

245

260

253

221

197

2,607.3

86.9

5,170

5,170

Calendar year 1955: Max - Mln - Mean - Ac-ft - 

Water year 1955-56; Max 4,000 Mln 0 Mean 55.9 Ac-ft 40,550

discharge
96 SAN GABRIEL RIVER BASIN

San Jose Creek near Whittier, Calif.

Location. Lat 34°01'25", long 118°02"05", In Paso de Bartolo Grant, on downstream side of 

Workman-Mill Road Bridge, 3 miles north of Whittier, Los Angeles County.

Drainage area. 85.2 sq mi.

Records available. January 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 214.85 ft above mean sea level (levels by 

Los Angeles County Flood Control District). Since Sept. 13, 1955, supplementary waterstage recorder on San Jose flood channel 1? miles upstream.

Average discharge. 27 years, 8.34 cfs (6,040 acre-ft per year); median of yearly mean discharges, 5.3 cfs (3,800 acre-ft per year).

Extremes. Maximum discharge during year, 5,380 cfs.Jan. 26; no flow for many days. 

1329-56: Maximum discharge, 13,100 cfs Jan. 1, 1934; no flow at times.

Remarks. One small diversion above station for ground-water recharge. San Jose flood 

channel If miles upstream diverts all flows in excess of 200 cfs from San Jose Creek 

to San Gabriel River above Whittier Narrows Reservoir. Records published herein 

represent combined flow of San Jose Creek and San Jose flood channel.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In oublo feet pep second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9 

10

11

12

13 

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.4

.2

.2

.2

.2

.2 

.2

.1

.1 

.1

.1

0

.1 

.6

_.£

.8

.8

.6

.4

.2

.2

.4

.2 

.2

.2

.2

.4

.4

.4

.4

.2

9.5

0.31

19

Nov.

0.2

.2

.2

.2

.1

§

0

0 

.2

.6

.6

.2

~~3

.5

.4

.1

0

.1

1.5

4.5

.8 

.2

.1

.1

.4

0

.2

.2

20.9

0.70

41

Dec.

0.2

4 ,7

.6

.2

.li

.2

.3

.4

.6 

.6

.6

.6

.4 

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.2

.2

.2

13.3

0.43

26

Jan.

0.2

.2

.2

.4

.4

.2 

.2

.2

.2

.1

.1

.1

.1 

.1

.1

0

S

0

0

.2

.4

.4

.2 

.2

52

1.950

M1

13

3.9

2.6

14

2,266.7

73.1

4,500

Feb.

l.g

TX

.7

.5

.3

ft

.2

.2 

.2

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

"

.4

13.4

0.46

27

Mar.

0.

,

!s

.3

.4

.3

.3

jZ.

.2

.5

4.4

.3

.3

.3

.2

.2

.2

11.0

0.35

22

Apr.

0.2

t l

7T

.1

.1

.1 

.1

.1

.1 

.1

.1

45

H..

.3

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

11

4.1

.8

.7

.6

120.4

4.01

239

May

0.7

.7 1.1 1.1

.9

.6 

.5

.4

3.4

.2

.3

.2 

.2

.1

.1

.2

.2

.2

.2

.2

.3

.3

.4

.4

.3

.2

.2

.1

.1

48.9

1.58

97

June

0.2

.2

"^y

!i

.2

"ts"

Is

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.2

5.0

0.17

9.9

July

0.2 ' g"

!i.1.1

.1 .1.1

£

.1

0

0

0

0

0

0

0

.1.1

.1.1.1 .1

0

0

0

.1.1.1.1

2.2

0.07

4.4

Aug.

0.1

0

.1

.2

 *J

!z

.2 

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.1

.1

.1

0

0 

.1

.1

.1

.1

.1

.1

0

0

4.1

0.13

8.1

Sept.

0.1"^

!i.1.1

.1

0

ff

0

0

0

0

0 

0

0'

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0.6

0.02

1.2

Calendar year 1955 : Max 218 Mln 0 Mean 1.52 Ao-ft 1,100

Water year 1955-56 : Max 1,950 Mln 0 Mean 6.87 Ao-ft 4,990
SAN GABRIEL RIVER BASIN 97

San Gabriel River at Pico, Calif.

Location (revised). Lat 34°00'25", long 118°04'05", in Paso de Bartolo Grant, in downstream end of mid-span pier of Beverly Boulevard Bridge. 0.7 mile downstream from San 

Jose Creek and 0.8 mile northeast of Pico, Los Angeles County.

Drainage area. 206 sq mi (excluding area above Santa Pe Dam). 

Records available.--October 1928 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 180 ft (from topographic map). Prior to 

Nov. 15, 1947, at site 1,200 ft downstream at different datum. Nov. 15, 1947, to 

Mar. 5, 1952, at site 1,000 ft downstream at different datum.

Extremes. Maximum discharge during year, 12,400 cfs Jan. 26 (gage height, 10.90 ft); no 

flow during several months.

1928-56: Maximum discharge, 22,700 cfs Mar. 2, 1938; no flow for periods each year.

Remarks.--Flow regulated by Cogswell and San Gabriel flood-control reservoirs (combined 

capacity, 54,500 acre-ft), Morris Reservoir (capacity, 35,000 acre-ft) , Santa Pe floodcontrol reservoir (capacity, 36,800 acre-ft), Whittier Narrows flood-control reservoir 

(capacity, 36,160 acre-ft), and several small flood-control reservoirs (combined 

capacity, 19,100 acre-ft). Diversions above station for irrigation, power development, 

and ground-water replenishment. Colorado River water was released to the river for

§ round-water recharge in the calendar year of 1954 as follows: August, 1,270 acre-ft; 

eptember, 4,540 .acre-ft, November, 2,600 acre-ft, and December, 1,590 acre-ft. At 

times flow is diverted from San Gabriel River below Santa Pe Dam and above Whittier 

Narrows Dam to Rio Hondo.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Revisions (water years). WSP 881: 1937.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

ftf

Oct.

0

0

0 

0

Nov.

10 

143

143

156

166

166

161

152

138

130

120

104

106

93

146

147

76

0

102

147

131

173

184

170

161

86

85

75

68

66

3,605

120

7,150 

6,760

Dec.

124 

51

54

82

2.8

149

69

175

88

81

76

74

72

72

74

74

72

69

68

61

63

61

26

5.2

5.2

5.2

5.2

5.2

4.8

3.8

3.4

1,775.8

57.3

3,520 

2,620

Jan.

4.3 

5.2

5.6

5.2

5.2

2.2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

59

4,050

445

7.5

7.5

7.7

17

4,601.4

148

9., 130 

0

Feb.

lil

a.o

6.9

6.6

6.0

5.4

4.5

4.5

4.2

4.0

3.8

3.8

4.0

4.2

4.8

4:5

4.8

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

154.5

5.33

306

0

Mar.

fti 5.1

5.0

4.5

3.5

3.5

3.2

3.2

3.2

3.2

3.2

3.2

3.8

3.8

3.8

3.8

3.5

3.2

3.2

1.5

.3

.3

.1

.1

.1

0

1.3

0

0

0

79.8

2.57

158 

0

Apr.

0 

0

0

0

0

0

0

0

0

0

0

13

101

6.6

3.5

2.5

2.8

2.8

2.8

2.8

1.4

.7

.1

.1

0

8.0

8.6

4.5

3.5 

3.0

168.7

5.62

335 

0

May

2.5 

2.0

1.7

1.0

0

0

0

0

17

2.7

12

173

190

121

97

91

84

84

81

81

76

73

84

52

3.0

0

0

0

0 

0

0

1,328.9

42.9

2,640 

2,580

June

0

0

0 

0

July '

0

0

0 

0

Aug.

0

0

0 

0

Sept.

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.0

17

38

45

54

41

38

45

46

41 

41

408.0

13.6

809 

809

Calendar year 1955 : Max 323 

Water year 1955-56: Max 4,030

Min 

Min

Mean 

Mean

19.3

33.1

Ac-ft 14,000 

Ac-ft 24,050

t Colorado River water released to San Gabriel River for ground-water recharge.
98 SAN GABRIEL RIVER BASIN

San Gabriel River at Spring Street, near Los Alamitos, Calif.

Location (revlsedj_.--Lat 33°48'38", long 118°05'24", in NEiNE£sw£ sec. 24, T. 43.. R. 12 

W. on downstream side of Spring Street Bridge, 1.2 miles upstream from Coyote Creek and 

1.2 miles northwest of Los Alamitos.

Drainage area. 216 sq mi (excluding area above Santa Pe dam).

Records available. October 1936 to September 1951 and October 1952 to September 1956 in 

reports of Geological Survey; 1927-36 in reports of Los Angeles County Flood Control 

District.

Gage. Water-stage recorder. Datum of gage is 12.25 ft above mean sea level, datum of 

1929, supplementary adjustment of 1934. Prior to October 1952, at datum 4.44 ft higher

Average discharge. 28 years (1927-51, 1952-56), 25.8 cfs (18.680 acre-ft per year); median 

of yearly mean discharges, 1.9 cfs (1,400 acre-ft per year).

Extremes . Maximum discharge during year, 12,540 cfs Jan. 26 (gage height, 10.91 ft); no 

flow most of year.

1936-51, 1952-56: Maximum discharge, 27,300 cfs (estimated) Mar. 2, 1938; no flow 

during several months of each year.

Remarks. Flow regulated by San Gabriel and Cogswell flood-control reservoirs (combined 

capacity, 54,500 acre-ft), Morris Reservoir (capacity, 35,000 acre-ft), Santa Pe floodcontrol reservoir (capacity, 36,800 acre-ft), Whittier Narrows flood-control reservoir 

(capacity, 36,160 acre-ft), and several small flood-control reservoirs (combined 

capacity, 19,100 acre-ft). Many diversions above station for irrigation, power development, and ground-water replenishment. At times flow is diverted from San Gabriel River 

below Santa Fe Dam and above Whittier Narrows Dam to Rio Hondo.

cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Jan. 26......... 4,300 Feb. 1.

27......... 417 Mar. 1.

28......... 16 2.

31......... 1.0

Note. Flow occurred only on days listed above.

0.1 

.3 

.1

Month

Water year 1955-56. ..............

Cfs-days

-

Maximum

4,300

Minimum

0

Mean

153

.003

1.13

12.9

Runoff In 

acre-feet

.2

.8

820

9,390

Brea Creek below Brea Dam, near Pullerton, Calif.

Location. Lat 33°53'16", long 117°55'32", in NE£ffl£NE£ sec. 28, T. 3 S., R. 10 W. , on

right bank 0.2 mile downstream from Brea Dam and 1 mile north of Pullerton. 

Drainage area. 23.4 sq mi.

Records available. January 1942 to September 1956. 

Gage. Water-stage recorder. V-notch sharp-crested weir since Oct. 25, 1946. Datum of

gage is 197.70 ft above mean sea level (levels by Corps of Engineers). 

Average discharge. 14 years, 0.68 cfs (492 acre-ft per year); median of yearly mean discharges, 0.3 cfs (220 acre-ft per year). 

Extremes. Maximum discharge during year, 207 cfs Jan. 26 (gage height, 3.18 ft); no flow

during most of year.

1942-56: Maximum discharge, 655 cfs Feb. 29, 1944 (gage height, 5.10 ft); no flow

during parts of most years. 

Remarks. Records good. Plow regulated by Brea flood-control reservoir (capacity, 4,100

acre-ft). Discharge measurement or observation of no flow generally made twice a month. 

Revisions (water years). WSP 1041: 1944(M).

Discharge, In cubic feet per second, water 

Nov.. 14. ........ 0.2

Jan. 25... ..

26.....

27... ..

28..... .... 1.2

year October 

Jan. 

Apr.

May

1955 to

9......

September 1956

... .1

Note. Flow occurred only on days listed above.

Month

April. ......... 1 ...................

Water year 1955-56. . .............

Cfs-days

-

Maximum

123

Minimum

0

Mean

.52

Runoff In 

aore-feet

378
SAN GABRIEL RIVER BASIN 99

Brea Creek at Fullerton, Calif.

Location (revised). Lat 33°52'25", long 117°55'30", in SE^NE^SEij: sec. 28, T. 3 S., R. 10 

W., between Maiden Avenue and U. S. Highway 101 at Fullerton.

Drainage area. 26.2 sq mi.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 160 ft (from topographic map). From 

Oct. 1, 1930, to Sept. 30, 1935, at site a quarter of a mile upstream at different 

datum. Oct. 1, 1935, to Jan. 19, 1940, at site a quarter of a mile downstream at 

different datum.

Average discharge. 25 years (1930-38, 1939-56), 1.18 cfs (854 acre-ft per year); median 

of yearly mean discharges, 0.5 cfs (360 acre-ft per year).

Extremes. Maximum discharge during year, 364 cfs Jan. 26 (gage height, 1.32 ft); no flow 

during most of year.

1930-56: Maximum discharge, 3,700 cfs Mar. 14, 1941 (gage height, 5.45 ft); no flow 

during most of each year.

Remarks. Flow regulated by Brea flood-control reservoir (capacity, 4,100 acre-ft). 

Cooperation. Records furnished by Orange County Flood Control District.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

3.1

0

0

0

0

0

0

.7

0

0

0

0

0

0

0

0

0

3.8

0.13

7.5

Dec.

0.2 0~

0

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.4

0.01

0.8

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

13

180

60

2.1

0

.2

2.2

257.5

8.31

511

Feb.

0.1

0

0

0

0

.4

.3

.2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.2

0

0

0

0

0

1.3

0.04

2.6

Mar.

0

0

0

Apr.

0

0

0

0

.1

0

0

0

0

0

.1

3.8

4.0

0

0

.1

0

0

0

0

0

0

0

0

0

.5

0

.2

0

0

8.8

0.29

17

May

0

0

0

0

0

0

0

0

5.5

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

5.5

0.18

11

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

0

.1

.3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.2

0

0.6

0.02

1.2

Calendar year 1955: Max 19 Mln 0 Mean 0.16 Ao-ft 118 

Water year 1955-56= Max 180 Mln 0 Mean 0.76 Ao-ft 551
100 SAN GABRIEL RIVER BASIN

Fullerton Creek below Fullerton Dam, near Brea, Calif.

Location. Lat 33°53'45", long 117°53'07", In NE&JWiSWi sec. 24, T. 3 S., R. 10 W., on 

left bank of outlet channel of Fullerton Dam, 1.6 miles southeast of Brea.

Records available. October 1941 to September 1956.

Sage. Water-stage recorder. Altitude of gage Is 260 ft (from topographic map). V-notch 

sharp-crested weir used Oct. 25, 1946, to Feb. 2, 1956.

Average discharge. 13 years (1941-54), 0.19 cfs (138 acre-ft per year); median of yearly 

mean ells charges, 0.02 cfs (14 acre-ft per year).

Extremes. Maximum discharge during year, 198 cfs Jan. 27 (gage height, 5.25 ft); no flow 

(luring most of year.

1941-56: Maximum discharge, 298 cfs Mar. 16, 1943 (gage height, 3.80 ft); no flow 

most of each year.

Remarks. Records fair except those for period of no gage-height record, which are poor. 

Flow regulated by Fullerton flood-control reservoir (capacity, 743 acre-ft). Since 

December 1954, small tributary formerly entering below dam diverted Into reservoir.

Revisions (water years) . WSP 1245: 1950(M).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total 

Mean

Ac-ft

Oct.

C)

0 

0

0

Nov.

. .

* '

0 

0

0

Dec.

(*)

0 

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

38

97~~*. 2

0 

0

*2.0

137.2 

4.43

272

Feb.

14 

8

5

3

2

1

1

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

.3

.3

.3

.3

*.3

.2

0.16

9.3

Mar.

 

0 2?

1

1

1

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0 

0

0

0.02

1.4

Apr.

0

0

0

0

0

0

0

0

0

0

.3

~

1.2

0

0

0

0

0

0

0

0

0

0

0

.2

*.2

.2

.2 

.2

0.09

5.4

May

0.2

.2

.2

.2

.2

.2

.2

.2

1.3

.7

.7

.6

.5

.5

.4

.4

.4

.4

.4

.2

.2

.2

.2

.2

.2

.2

.2

.1

!i.1

0.32

20

June

00"

0

0

il

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o(

0

0

0

0

0

0

0

*0

0 

0

0.003

0.2

July

00"

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

*0

0

0.003

0.2

Aug.

0.1 o'

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

*0

0

0.006

0.4

Sept.

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1.1

.1

0

0

0

0

0

0

0

0 

0

0.01

0.6

Calendar year 1955: Max 11 Min 0 Mean 0.07 Ac-ft 49

Water year 1955-56: Max 97 Min 0 Mean 0.43 Ac-ft 310

* Discharge measurement or observation of no flow made on this day.

Note.--No gage-height record Feb. 2 to Apr. 9j discharge estimated on basis of 2 discharge measurements, 2 observations of no flow, and weather records.
SAN GABRIEL RIVER BASIN 101

Fuller-ton Creek at Fuller-ton, Calif.

Location (revised) .--Lat 33°52'22", long 117°54'22", in NEiNE^NE^- sec. 34, T. 3 S., R. 10 

W . , on Raymond Avenue Bridge at Fuller-ton.

Drainage area. 6.2 sq mi, approximately.

Records available . October 1939 to September 1956 in reports of Geological Survey. October 1935 to September 1939 in files of Orange County Flood Control District.

Gage . Water-stage recorder. Altitude of gage is 170 ft (from topographic map).

Average discharge. 21 years (1935-56), 0.75 cfs (543 acre-ft per year); median of yearly 

mean discharges, 0.3 cfs (220 acre-ft per year).

Extremes. Maximum discharge during year, 364 cfs Jan. 27 (gage height, 3.12 ft); no flow 

for many days.

1935-56: Maximum discharge, 1,600 cfs Mar. 14, 1941 (gage height, 10.05 ft); no flow 

during several months each year.

Remarks. Local irrigation company occasionally wastes water to creek during summer months. 

Flow regulated by Fullerton flood-control reservoir (capacity, 743 acre-ft).

Cooperation. Records furnished by Orange County Flood Control District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

2?

24

£5

26

27

28

29

30 

31

TotaJ

Mean

Ac- ft

Oct.

0.1

.1

.1

.3

.2

.2

.2

.2

.2

.2

.2

.8

1.2

.6

1.2

1.4

.7

0

0

.2

0

.1

.4

0

0

0

.1

.2

.1

0 

0

9.0

0.29

18

Nov.

0.1

O

0

.1

0

.3

.1

O

.3

.7

.9

.8

.7

3.1

0

0

.8

.1

.1

0

1.5

0

0

0

0

.1

0

0

0

0

9.7

0.32

19

Dec.

1.3

0

0

1.2

.5

.9

.1

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

.3

1.0

.3

0

.1

.7

0

0

0 

0

6.5

0.21

13

Jan.

0

0

.3

.2

.2

.3

.3

.1

.1

.5

.5

.2

0

.1

0

.5

.5

.3

.2

.2

.2

0

.4

.2

14

122

 2.3 150

0

.4 

7.3

301.3

9.72

598

Feb.

4 1

2 8

1 8

1 4

1 3

1 0

2

0

0

0

.1

0

0

0

0

0

0

0

0

0

.1

.2

2.4

1.1

0

0

0

.2

1.6

18.3

0.63

36

Mar.

1.6

1.7

1.5

1.2

0

.7

0

.1

.1

.1

0

.1

.1

0

.2

.1

.2

.3

.1

.2

.1

0

.2

.3

.2

.1

.2

.1

.2

.2 

.1

10.0

0.32

20

Apr.

0.3

.2

.4

.2

.2

.5

1.1

.8

.8

1.1

.9

8.3

9.6

3.5

.4

0

0

0

0

0

.1

.1

0

0

0

2.2

1.3

1.8

1.4

1.5

36.7

1.22

73

May

1.7

1.8

1.9

2.3

2.1

2.2

2.2

2.3

12

3.9

3.1

2.8

2.6

2.2

2.9

4.5

3.6

.2

.5

.2

.2

.1

.4

.1

0

.3

.1

.3

.3

1.5 

1.6

59.9

1.93

119

June

1.8

.8

.1

73

1.2

1.7

.7

.4

.4

.6

1.6

.8

1.2

1.0

1.5

1.4

1.1

.8

.6

.4

.6

.4

.5

.5

.5

.7

.9

.4

.5

.3

24.2

0.81

48

July

0.5

.5

.6

.7

.6

.6

.8

.7

.7

.6

.6

1.2

2.1

1.3

.7

.8

.9

1.0

1.2

1.0

.9

.7

1.0

1.1

1.0

.9

.8

.9

.8

.9

.7

26.8

0.86

53

Aug.

0.7

.5

1.0

.7

.5

.7

.8

2.0

6.5

2.5

.7

.4

.3

.7

1.2

.6

.7

.7

.5

.5

.6

1.0

1.2

1.1

.9

.8

.9

.7

1.4

1.4

33.5

1.08

66

Sept.

1.0

.7

.7

.5

.2

.6

.3

.5

.5

.7

.6

.3

.5

.3

.6

.5

.5

.6

.6

ii6

.6

.6

.5

.5

.5

.6

.6

.5

.5

.5

17.2

0.57

34

Calendar year 1955: Max 11 Min 0 Mean 0.27 Ac-ft 195

Water year 1955-56: Max 150 Min 0 Mean 1.51 Ac-ft 1,100

493801 0-59-8
102 SAN GABRIEL RIVER BASIN

Coyote Creek near Artesia, Calif. 

Location (revised) . Lat 33 "SO "20", long 118°03'34", in NE^NWisW^ sec. 8, T. 4 S., R. 11 W.

on downstream side of Centralia Road Bridge, 2 miles southeast of Artesia, and 3.7 miles'

upstream from mouth. Prior to Feb. 9, 1956, at site 0.5 mile upstream. 

Drainage area. 110 sq mi. 

Rec ?^ ava^la^ le "October. 1939 to September 1956 in reports of Geological Survey; January

1930 to September 1939 in reports of Los Angeles County Flood Control District. 

Gage. Water-stage recorder. Datum of gage is 20.2 ft above mean sea level (levels by Los

Angeles County Flood Control District). Prior to Feb. 9, 1956, at several sites about

half a mile upstream at different datums. 

Average discharge. 26 years (1930-56), 8.33 cfs (6.030 acre-ft per year); median of yearly

mean discharges, 4.2 cfs (3,000 acre-ft per year). 

Extremes..' Maximum discharge during year, 3,770 cfs Jan. 26 (gage height, 8.49 ft); no flow

for many days.

1930-56: Maximum discharge, 7,360 cfs Jan. 18, 1952 (gage height, 14.30 ft); no flow

at times -during most years. 

Cooperation. --Records furnished by Los Angeles County Flood Control District and reviewed

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

0

0

0

0

0

0

0

.1

.2

.1

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

2.3

0.07

4.6

Nov.

0.1

.2

.1

.1

.1

.1

.1

.1

.1

.2

.3

.3

.2

14

1.7

1.0

.8

.7

.5

.5

.5

.4

2.9

1.5

.8

.5

.5

.3

.3

.3

29.2

0.97

58

Dec.

0.2

.3

.2

.3

.4

.2

.3

.1

.1

.1

.1

.1

.1

.1

.2

.1

.1

.2

.2

.2

.2

.3

.3

.3

.3

.5

.3

.4

.5

.4

.4

7.5

0.24

15

Jan.

0.4

.4

.4

.7

.5

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

150

2,080

864

72

26

15 

42

3,253.3

105

6,450

Feb.

19

4.2

3.0

2.7

2.2

2.0

1.5

1.2

.8

.7

.6

.6

.7

1.0

1.2

.7

.5

.6

.7

.7

.6

.6

1.4

2.6

1.8

.7

.6

.6

.6

- --

54.1

1.87

107

Mar.

0.7

.7

.7

.6

.6

.5

.7

.6

.4

.4

.4

.2

.2

.2

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.3

.2

.2

.2

.2

.2

.1

9.7

0.31

19

Apr.

0.4

6.6

.5

.4

.4

.6

.6

.4

.4

.6

.3

26

127

49

8.8

2.8

1.0

.6

.3

_._2

.3

.3

.4

.4

.4

2.1

5.4

.4

.4

.3

237.3

7.91

471

May

0.4

.5

.6

.7

.7

.5

.4

.4

38

9.5

2.8

1.2

.5

.2

.2

.3

.3

.1

.2

.4

.2

.5

.2

.2

.2

.2

.2

.2

.4

.2 

.2

60.6

1.95

120

June

0.2

.4

.3

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.4

.7

.7

.7

.4

.7

.5

.3

.3

.4

.2

.2

.6

8.4

0.28

17

July

0.4

.2

.2

.2

.5

.3

.2

.1

.1

.2

.1

.1

.2

.3

.3

.4

.7

72

.2

.2

.3

.2

.2

.2

.1

.1

.1

.2

.1

.1 

.1

6.9

0.22

14

Aug.

0.1

.1

.2

.1

.1

.1

.2

.2

.2

.2

.1

..1

0

0

0

0

O

0

0

.1

.1

.1

.1

.3

.4

.2

.2

.2

.1

.1

.1

3.7

0.12

7.3

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0~.1

0

0

0

0

0

0

0

0

0.1

O.OO3

0.2

Calendar year 1955: Max 176 Min 0 Mean 1.67 Ac-ft 1,210

Water year 1955-56: Max 2,080 Min 0 Mean 10.0 Ac-ft 7,28O

Carbon Creek near Yorba Linda, Calif.

Location. Lat 33°53'22", long 117°50'40", in NW^NW^-NE^ sec. 29, T. 3 S., R. 9 W., on downstream side of left abutment on Yorba Linda Boulevard Bridge, 1.8 miles west of Yorba 

Linda.

Drainage area. 20.4 sq mi.

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Datum of gage is 288.60 ft above mean sea level, unadjusted.

Average discharge. 7 years, 0.26 cfs (188 acre-ft per year).

Extremes.--Maximum discharge during year, 155 cfs Jan. 26 (gage height, 4.80 ft), result of 

slope-area determination of peak flow; no flow during most of year.

1949-56: Maximum discharge, 616 cfs Jan. 18, 1952 (gage height, 4.60 ft), from 

rating curve extended above 200 cfs by logarithmic plotting; no flow during most of each 

year.

Remarks. Records poor. Discharge measurement or observation of no flow generally made 

twice a month.

Cooperation. Two discharge measurements furnished by Orange County Flood Control District.

Discharge, in cubic feet per second., water year October 1955 to September 1956

Apr. 12......... 0.1

May 9......... .1

_Hote. Flow occurred only on days listed above.

Month

Water year 1955-56. ............

Cfs-days

-

Maximum

72

Minimum

0

0

0

Mean

3.35

.003

.01

.28

Runoff in 

acre-feet

206

.2

7.5

206

Peak discharge (base. 25.cfs).--Jan. 26 (5 p.m.) 155 cfa (4.80 ft).
LOS ANGELES RIVER BASIN 103

Los Angeles River at Sepulveda Dam, Calif.

Location (revised). Lat 34 0 09'42", long 118°27'57", In Ex Mission die Sa'n Fernando Grant, 

on right bank of outlet channel of Sepulveda Dam, 200 ft upstream from Sepulveda Boulevard In city of Los Angeles and 1.85 miles southwest of Van Nuys, Los Angeles County.

Drainage area. 155 sq ml.

Records available.--May 1943 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 670 ft (from topographic map). Prior to 

mig. 29, 1953, at site 800 ft upstream at datum 5.99 ft higher.

Average discharge. 13 years, 21.0 cfs (15,200 acre-ft per year); median of yearly mean 

discharges, 18 cfs (13,000 acre-ft per year).

Extremes. Maximum discharge during year, 4,670 cfs Jan. 26 (gage height, 5.48 ft); minimum dally, 3.2 cfs Sept. 19-22.

1943-56: Maximum discharge, 8,520 cfs Jan. 15, 1952 (gage height, 14.56 ft, site 

and datum then In use); minimum dally, 1.3 cfs Sept. 20-22, 24, 25, 1951.

Remarks. Records good below 1,000 cfs and fair above. Discharge measurements generally 

made once a week. Flow regulated by Sepulveda flood-control reservoir (capacity, 

17,400 acre-ft). Some diversion above station. City of Los Angeles stores Imported 

Owens River water In San Fernando and Chatsworth Reservoirs and at times discharges 

Imported water Into Los Angeles River above station from the latter. This Inflow 

amounted to 4,005 acre-ft during current year.

Cooperation. Twenty-two discharge measurements furnished by Los Angeles County Flood Control District and two furnished by Corps of Engineers.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Jan. 25, 26, Aug. 22 to Sept. 3)

0.2 

.5 

.4

.5

.7

1.0

2.8

8.9

19

32

72

170

1.4 

1.7 

2.0 

3.0 

4.0

360

550

770

1,670

2,810

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

(t)

Oct.

31

31

31

22

14

14

14

14

12

10

8.9

8.9

8.1

7.4

7.4

7.4

7.3

5.4

5.4

4.8

4.8

6.0

5.4

4.8

4.8

4.8

5.4

4.8

4.8

4*8

4.8

319.2

10.3

633

264

Nov.

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

6.8

7.4

6.7

6.0

74

6.7

6.0

8.2

5.4

fcl

35

5.4

4.8

4.8

4.8

4.8

4.8

5.4

6.0

5.4

260.0

8.67

516

0

Dec.

22

11

5.4

106

13

17

7.2

6.2

6.0

6.5

4.8

4.8

4.8

5.4

5.4

4.8

4.8

4.8

4.8

4.8

5.4

5.4

17

10

33

40

18

5.4

5.4

5.4

5.4

399.9

12.9

793

0

Jan.

4.8

4.8

4.8

.8

.8

.8

.8

.8

.8

.4

.4

.4

.8

.8

.2

.7

.7

.2

.8

.8

.4

.2

.4

.8

384

2.480

200

34

22

50

85

3,371.2

109

6,690

0

Feb.

8.9

8.1

8.1

8.1

8.1

8.1

8.1

8.1

7.4

7.4

7.4

8.1

8.1

8.1

8.1

7.4

6.0

6.0

5.4

4.8

4.8

5.8

28

a!5

alO

a8

a7.5

a7.5

7.4

243.8

8.41

484

0

Mar.

6.7

6.7

6.7

7.4

8.1

7.4

6.7

6.7

7.4

7.4

7.4

7.4

7.4

8.1

8.1

8.1

8.1

8.1

8.9

9.1

7.4

8.1

8.1

8.1

8.1

8.1

7.4

8.1

8.1

241.2

7.78

478

0

Apr.

14

8 1

7

7

7

7

7

8

8 1

8 1

27

496

To

21

8.1

8.1

8.1

8.1

8.1

8.1

8.1

8.1

8.1

8.9

9.7

30

11

8.1

8.1

8.1

864.2

28.8

1,710

0

May

9.7

8.9

10

10

12

12

12

13

201

38

14

10

8.9

8.1

8.1

9.7

9.7

8.9

7.4

7.4

6.7

6.7

6.7

6.0

5.4

5.4

6.0

6.0

6.7

7.4

8.1

489.9

15.8

972

0

June

8.1

179

9.7

10

15

8.1

9.6

13

25

22

18

16

19

16

14

14

14

14

14

22

24

25

24

24

25

IB" 26

24

22

18

527.4

17.6

1,050

631

July

18

19

20

18

16

14

14

14

14

14

16

26

16

14

14

14

14

16

30

34

34

32

34

34

16

31

20

20

19

20

20

655

21.1

1,300

928

Aug.

25

36

34

34

34

32

28

28

26

26

26

26

25

25

li

24

25

25

24

24

25

28

28

28

28

28

28

30

30

30

30

864

27.9

1,710

1,383

Sept.

30

30

30

30

30

28

26

26

26

30

30

30

31

30

30

30

21

3.7

 372 3.2

3.2

3.2

.7

.2

.2

.2

.8

.4

5.4

5 ' 4

541.8

18.1

1,070

799

Calendar year 1955: Max 524 Min 4.2 Mean 21.7 Ac-ft 15,730

Water year 1955-56: Max 2,480 Min 3.2 Mean 24.0 Ac-ft 17,410

t Flow in acre-feet released from Chatsworth Reservoir to Los Angeles River. This flow is included in that shown on preceding line.

a No gage-height recordj discharge estimated on basis of 2 discharge measurements and normal recession curve.
104 LOS ANGELES RIVER BASIN 

Pacoima Creek near San Fernando, Calif.

Location.--Lat 34°20'02", long 118°23'55", in SE^NE^ sec. 24, T. 3 N., R. 15 W., on right 

bank 500 ft downstream from Pacoima Dam, about a third of a mile upstream from mouth of 

canyon, and 4 miles northeast of San Fernando.

Drainage area. 28.2 sq mi.

Records available. March 1916 to September 1956.

Gage. Water-stage recorder and Parshall-type flume. Altitude of gage is 1,650 ft (from 

"^Topographic map). Prior to September 1929, at site 0.5 mile downstream at different

datum. September 1929 to Mar. 23, 1933, records based on outflow from Pacoima Dam.

Mar. 24, 1933, to Feb. 1, 1935, at site 450 ft downstream at different datum.

Average discharge. 39 years (1917-56), 9.18 cfs (6,650 acre-ft per year); median of yearly 

mean discharges, 4.3 cfs (3,100 acre-ft per year).

Extremes.--Maximum discharge during year, 66 cfs May 17 (gage height, 0.87 ft); no flow 

during several months.

1916-56: Maximum discharge, 2,440 cfs Mar. 3, 1938; no flow for several months in 

most years.

Remarks. Flow regulated by Pacoima flood-control reservoir (capacity, 4,710 acre-ft). 

Flow passing over Pacoima Dam spillway enters creek below station.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Revisions (water years). WSP 881; 1938(M) . WSP 1041: 1944(M). WSP 1285: 1951-52.

1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

- - --

0

0

0

Mar.

0 

O

O

0

0

0

2.3

0

0

O

O

0

0

0

0

0

O

O

0

0

0

o

0

0

o

o

0

0

0

0

0

2.3

0.07

4.6

Apr.

0

0

0

May

0

0

0

o

0

0

o

0

o

o

0

0

0

0

o

o

4.4

5.2

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0 

5.0

74.6

2.41

148

June

e5.O

5.0

5.0

5.0

5.0

5.0

5.O

5.0

5.0

5.0

5.0

4.9

5.0

5.0

5.O

4.9

4.9

4.9

4.8

4.6

4.6

4.6

4.6

4.5

4.5

4.5

4.5

4.5

145.3

4.84

288

July

4.5 

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4'. 4

4.4

4.4

4.4

4.4

4.4

137.9

4.45

274

Aug.

H4.3

4.3

4.3

4.3

4.3

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4. 1

471

4.1

4.1

4.1

4.1

4.1

4.1

4.1

130.0

4.19

258

Sept.

4.1 

4.1

4.1

4.8

5.2

5.1

5.1

5.1

5.1

5.1

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4.9

4.9

4.9

4.9

4.1

3.6

3.6

3.6

3.6

140.9

4.70

279

Calendar year 1955: Max 15 Min 0 Mean 1.02 Ac-ft 736

Water year 1955-56: Max 5.2 Min 0 Mean 1.72 Ac-ft 1,250
LOS ANGELES RIVER BASIN 105

Tujunga Creek below Mill Creek, near Colby Ranch, Calif.

Location. Lat 34°18'33", long 118°08'40", on left bank 500 ft downstream from Mill Creek 

and 2 miles west of Colby Ranch, Los Angeles County.

Drainage area.--64.9 sq mi.

Records available. January 1948 to September 1956.

Gage..--Water-stage recorder. Altitude of gage is 2,650 ft (from topographic1 map).

Average discharge.--8 years, 5.52 cfs (4,000 acre-ft per year).

Extremes. Maximum discharge during year, 324 cfs Jan. 26 (gage height, 7.50 ft); no flow 

during several months.

1948-56: Maximum discharge, 1,380 cfs Jan. 18, 1952; no flow at times during most 

years.

Maximum discharge known slnoe November 1930, 14,800 cfs Jan. 23, 1943.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

0

0

0 

O

0

0

0

0

0

0

0

0

.1.1

0

0

O

0

0

O

.1

.1.1

0.5

0.02

1.0

Nov.

0.1'.z

.2

.2

.2

.2

.2

.2

.2

.2 

.3

.4

~31 .7

.3

.3

.4

.3

.3

.6

.6

.5

.5

.5

.5

.5

.5

.6

.6

11.9

O.4O

24

Dec.

0.8

1.1

.8

1.2

T7o

.7

.7

.7

.7

.7

tt

.6

.6

.6

.7

.7

.7

.7

.7

.7

.7

.8

.9

1.1

1.1

1.2

.9

.9

.9

.9

25.0

0.81

50

Jan.

0,9 

.9

.9

.9

.9

.9

.9

.9

.1!

.8

.9 

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

1.0

1.0

3.2

146

T52

29

14

10

10

355.8

11.5

706

Feb.

fi

5.3

4.9

4.7

4.3

4.0

3.8

3.4

3.4

3.2 

3.2

3.2

3.2

3.0

2.9

2.9

2.9

2.7

277

2.7

2.7

4.0

5.3

4.1

4.0

3.8

3.6

3.6

112.2

3.87

223

Mar.

14 372

2.9

2.9

2.9

2.7

2.6

2.7

2.7

2.6

2.6 

2.4

2.4

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.1

27T

2.1

2.1

2.1

2.1

2.1

2.1

75.9

2.45

151

Apr.

2.3 

2.3

2.1

2.1

2.1

2.0

ill

1.8

1.8

2.0

2.3 

14

17

11

8.5

12

16

TT

8.2

6.3

5.1

4.7

4.3 4.3'

6.0

10

6.7

5.5

4.7

196.9

6.56

391

May

4.5 

4.0

3.8

3.6

3.6

3.6

3.4

3.4

11

13

7.2 

5.9

4.9

4.0

3.6

3.0

3.0

3.0

2.7

2.6

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.1

2.1

1.6

118.1

3.81

234

June

1.4 

T73

1.1

1.0

1.0

1.2

.8

.8

.7

.5

.4 

.3

.3

.4

.5

.4

.4

.3

.2

.3

.3

.3

.3

.2

.2

0

0

0

0

0

14.6

O.49

29

July

0

7f

0

0

0

0

0

0

0

0 

0

0

0

0

O

0

0

O

0

O

0

O

O

O

O

O

O

0

O

O

0.4

0.01

0.8

Aug.

0

0

0

Sept.

O

0

O

Calendar year 1955: Max 26 Mln 0 Mean 2.48 Ac-ft 1,800

Water year 1955-56 : Max 146 Mln O Mean 2.49 Ac-ft 1,81O
106 LOS ANGELES RIVER BASIN 

Tujunga Creek near Sunland, Calif.

Location. Lat 34°18'02", long 118 e 16'02" , near center of Swi sec. 32, T. 3 N., R. 13 W., 

on left bank 1,000 ft upstream from Gold Canyon, 2 miles upstream from mouth of canyon, 

and 4 miles northeast of Sunland.

Drainage area.--106 sq mi.

Records available. October 1916 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,571.80 ft above mean sea level (levels by 

"Los Angeles County Flood Control District). Prior to Oct. 1, 1932, at site 1,000 ft 

upstream at different datum.

Average discharge.--39 years (1917-56), 28.0 cfs (20,270 acre-ft per year); median of 

yearly mean discharges, 15 cfs (10,900 acre-ft per year).

Extremes.--Maximum discharge during year, 301 cfs Jan. 27 (gage height, 10.46 ft); minimum 

daily, 0.3 cfs Sept. 23, 26-30.

1916-56: Maximum discharge, 50,000 cfs (estimated) Mar. 2, 1938; minimum, 0.1 cfs 

at times during summers of 1919, 1924, 1928-31.

Remarks. Flow regulated by Big Tujunga flood-control reservoir (capacity, 4,240 acre-ft). 

Several small diversions above station for irrigation.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

9

10

11

12

13

14 

15

16

17

IB 

19

20

21 

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

13

13

13

13

15

14

13

13

13

12

13

11

9.7

8.7 

7.8

7.4

5.2

3.7

3.2

2.9

2.6 

Z.O 

1.4

1.4

1.2

1.2

1.4

l.Z

1JL1.1

1.2

220.4

7.11

437

Nov.

1.4

1.4

1.2

1.1

1.1

.9

.8

.8

1.1

l.Z

1.4

1.5

1.7

5.8 

37?

2.4

2.1

2.1

1.8

1.5

1.5 

1.8 

1.5

1.4

1.4

1.2

1.2

.9

.9

.9

47.2

1.57

94

Dec.

1.5

1.8

1.5

1.4

1.4

1.4

1.4

1.4

1 . 2

1.2

1.2

1.2

1.2

1.2 

1.2

1.2

1.2

l.Z

1.4

1.4

1.4

1.4 

1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.7

42.8

1.38

85

Jan.

1.5

1.5

1.2

1,2

1.2

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.4 

1.4

1.2

1.2

1.2

1.2

1.4

1.4 

1.5 

1.5

1.7

2.8

64

Hi

117

69

67

58

623.9

20.1

1,240

Feb.

16.

9.8

9.1

7.7

7.2

6.3

S.8

5.3

4.4

4.4

4.4

4.4

4.4

4.2

3.9

ill

3.9

3.9

4.2

4.2

4.2 

4.2

6.Z

6.8

4.2

4.2

3.9

3.7

3.7

158.3

5.46

314

Mar.

3.7

3.7

3.7

3,9

3.7

3.7

3.5

2.8

2.8

2.8

3.0

3.0

3.Z

3.2 

2.8

2.3

2.3

2.1

2.1

2.1

2.1 

2.3 

2.1

2.1

2.1

2.1

2.0

1.8

1.7

1.7

81.9

2.64

162

Apr.

2.1

2.1

2.0

1.8

1.7

1.5

JUi

1.4

1.4

1.4

2.0

17

11

9.8 

7.7

6.8

9.1

9.1

8.6

8.6

8.6 

8.2 

8.6

8.2

6.8

10

11

10

8.6

8.2

202.7

6.76

402

May

8.2

8.2

8.2

8.6

8.6

8.6

9.1

9.1

12

9.8

9.1

8.2

8.2 

7.7

7.2

172

8.2

8.2

8.2

8.2 

8.2 

8.2

8.2

8.2

8.2

8.2

8.2

8.2

7.7

7.2

272.3

8.78

540

June

7.2

7.2

6.8

6.8

6.8

6.8

6.8

g t 5

6.3

6.3

6.3

6.3

6.3

6.3 

6.3

6.3

6.3

6.3

6.3

6.3

6.8 

7.7

7* 7

7^7

7.7

7.2

6.3

6.8

6.8

202.7

6.76

402

July

7.2

7.2

7.2

7.2

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.3

6.3

6.8

6.8

6.8

6.8

6.8

6.8 

6.8 

7.2

172

7.2

7.7

7.7

7.7

7.7

7.7

219.0

7.06

434

Aug.

7.2

7.7

7.7

7.7

6.3

4>4

itl

6.3

7.7

6.8

6.3

5.8

5.3

5.8 

5.8

8.2

14

12

14

17

15 

13 

10

8.6

8.2

7.7

7.7

7.2

7.7

10

8.2

263.7

8.51

523

Sept.

7.2

4.9

3.5

3.5

2.0

1.3

1.2

1.1

1.0

.8

1.1

.8

.8

.6 

.4

.4

.5

.5

.5

.5

.5 

.4

74

.4

.3

.3

.3

.3

.3

36 . 1

1.20

72

Calendar year 1955; Max 33 Min 0.8 Mean 5.22 Ao-ft 3,780

Water year 1955-56 : Max 214 Min 0.3 Mean 6.48 Ao-ft 4,700
LOS ANGELES RIVER BASIN 107

Halnes Creek near Tujunga, Calif.

Location. La t 34°15'50", long 118 "16 '15", in NW^NW^ sec. 17, T. 2 N., R. 13 W., on right 

bank 0.5 mile upstream from mouth of canyon and 1.5 miles northeast of Tujunga.

Drainage area. 1.2 sq mi, approximately.

Records available .--Creek: February 1917 to September 1934, October 1935 to September 

1956. Diversion: January 1931 to September 1956.

Gage. Water-stage recorder and broad-crested weir. 

topographic map ) .

Altitude of gage is 2,430 ft (from

Average discharge. --38 years (1917-34, 1935-56), 0.14 cfs (101 acre-ft per year); median 

 of yearly mean discharges-, 0.1 cfs (70 acre-ft per year). Average combined discharge

of creek and diversion, 24 years (1931-34, 1935-56). 0.39 cfs (282 acre-ft per year);

median of combined yearly mean discharges, 0.2 cfs (140 acre-ft per year).

Extremes. --Maximum discharge during year, 3.6 cfs Jan. 26 (gage height, 1.63 ft); no flow 

during most of year. , _ .

1917-34, 1935-56; Maximum discharge , 265 cfs Mar. 2, 1938 (gage height, 4.6 ft), 

from rating curve extended above 3.2 cfs on basis of velocity-area studies; maximum 

gage height, about 11 ft Jan. 1, 1934 (caused by debris wave commonly called a mud 

flow); no flow at times during many years.

Remarks . Records poor. Discharge measurement or observation of no flow generally made 

once a month. City of Los Angeles diverts most of flow through two infiltration 

galleries upstream from station.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

0

0

0

1.8

Nov.

0

0

0

0.8

Dec.

0

0

0

1.6

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.9

0

0

0 

0

0

0.9

0,03

1.8

2.7

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1.1

.1

0

0

0

0.3

0.01

0.6

2.7

Mar.

0

0

0

1.8

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

jl

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

1.6

May

0

0

0

0

0

0

0

0

*1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

2.0

June

o

0

0

0

0

0

0

0

0

0

0

0

0

0

jul

.1

.1.1

.1

.1

.1

.1.1

0

0

0

0

0

0

0

0.9

0.03

1.8

1.4

July

0

0

0

4.1

Aug.

0

0

0

3.3

Sept.

0

0

0

2.6

Adjusted for diversion

Ac-f t[ 1 . 8 [ 0.8

Calendar year 1955 : 

Water year 1955-56 :

1.6 4.5 3.3 1.8 1.8 2.2 3.2

Observed

Max 0.7 Mln 0 Mean 0.003 Ac-ft 2.0 

Max 0.9 Mln 0 Mean 0.006 Ac-ft 4.6

4.1 3.3 2.6

Adjusted

Mean 0.06 Ac-ft 41 

Mean 0.04 Ac-ft 31

t Diversion abov 

Los Angeles.

station, in acre-feet, for Loa Angeles municipal supply furnished by city of
108 LOS ANGELES RIVER BASIN

Little Tujunga Creek near San Fernando, Calif.

Location.--Lat 34°16i30", long 118°22'20", In Tujunga Grant, on downstream side of Foothill Boulevard Bridge, 4 miles east of San Fernando, Los Angeles County. 

Drainage area. 21.0 sq ml.

Records available. December 1928 to September 1956. 

Gage. Water-stage recorder. Datum of gage Is 1,067.89 ft above mean sea level (levels by

Los Angeles County Flood Control District). 

Average discharge. 28 years, 2.57 cfs (1,860 acre-ft per year); median of yearly mean

discharges, 0.7 cfs (510 acre-ft per year). 

Extremes.--Maximum discharge during year, 445 cfs Jan. 26 (gage height, 4.17 ft); mrflow

during most of year.

1928-56: Maximum discharge, 8,500 cfs Mar. 2, 1938; no flow for several months each

year. 

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 

to September 1956

Jan. 9.

25.

26.

27.

28.

29.

30.

31.

0.1 

.3 

123 

42 

4.9 

.3 

.1 

.5

Feb. 23........... 0.2

24........... .1

Apr. 12........... 9.9

13........... 5.2

14........... .8

May 9........... 2.5

10........... .9

11........... .7

Note. Flow occurred only on days listed above.

Month

February ............................

Mai7

Water year 1955-56. ................

Cfs-days

15 9

-

Maximum

123

9 9

2 5

123

Minimum

0

Mean

5 52

.52

Runoff in 

acre-feet

32

381

Tujunga Creek below Hansen Dam, Calif.

Location.--Lat 34°15'10", long 118°23'20", in Ex Mission San Fernando Grant, in city of Los 

Angeles, on left bank of outlet channel of Hansen Dam, 0.1 mile upstream from Glen Oaks 

Boulevard and 3 miles southeast of San Fernando, Los Angeles County.

Drainage area. 148 sq mi.

Records available.--October 1940 to September 1956 in reports of Geological Survey. April 

1932 to September 1940 (fragmentary) in annual reports of Los Angeles County Flood Control District.

Gage.--Water-stage recorder. Datum of gage is 943.32 ft above mean sea level, datum of 

1929 (Corps of Engineers benchmark). Prior to Aug. 25, 1944, at site 0.1 mile downstream at different datum. Aug. 25, 1944, to Sept. 30, 1951, at site 0.3 mile upstream 

at different datum. Oct. 1, 1951, to Sept. 30, 1953, at present site at datum 1.00 ft 

higher.

Extremes. Maximum discharge during year, 20 cfs Mar. 1 (gage height, 1.09 ft); no flow 

during most of year.

1940-56: Maximum discharge, about 3,000 cfs Jan. 24, 25, 1952 (gage height unknown) 

on basis of records of release at Hansen flood-control dam; no flow during parts of 

each year.

Remarks. Records poor. Discharge measurements or observations of no flow generally 

made once a month. Flow regulated by Big Tujunga flood-control reservoir (capacity, 

4,240 acre-ft) and by Hansen flood-control reservoir (capacity, 32,000 acre-ft). 

Several small diversions above station for domestic use and irrigation. No water 

diverted from outlet channel upstream from gage to spreading grounds during year; no 

water diverted during the 1955 calendar year. Most of the flow passing gaging station 

during the year was from precipitation on the paved drainage area between the station 

and the dam.

Discharge, in cubic feet per second, water year October 1955 

to September 1956

Jan. 25.

26.

27. 

30.

Feb. 22. 

23.

3.2

.9 

.4 

.1 

.3

May 9......

..... .1

..... .4

Note. Flow occurred only on days listed above.

Month

Mai*ch

Water year 1955-56. ................

Cfs-days

-

Maximum

0.2

4.1

1.9

4.1

Minimum

0

0

o

0

0

0

0

Mean

0.01

.17

.01

.02

.19

.01

.03

.03

Runoff In 

acre-feet

0.8

11

.8

1.0

11

.8

2O

25
LOS ANGELES RIVER BASIN 109

Los Angeles River at Los Angeles, Calif.

Location. Lat 34°04'55", long 118°13'35", on right bank near Figueroa Street, Los Angeles 

800 re upstream from Arroyo Seco.

Drainage area. 510 sq mi.

Records available.--October 1929 to September 1956.

Oage.--Water-stage recorder. Datum of gage is 292.58 ft above mean sea level (levels by 

Los Angeles County Flood Control District). Prior'to May 26, 1938, at site 150 ft 

downstream at different datum. May 26, 1938, to Dec. 8, 1939. at site 350 ft downstream at different datum.

Average discharge.--27 years, 57.7 cfs (41,770 acre-ft per year); median of yearly mean 

discharges, 35 cfs (25,300 acre-ft per year).

Extremes.--Maximum discharge during year, 15,300 cfs Jan. 26 (gage height 5 90 ft)- minimum daily, 0.6 cfs Aug. 4, 10, 22, 23, Sept. 8-10, 29, 30.

1929-56: Maximum discharge, 67,000 cfs Mar. 2, 1938; no flow for several periods in 

earlier years.

Remarks.--Flow regulated by Hansen and Sepulveda flood-control reservoirs (combined capacity, 49,400 acre-ft) and several small flood-control reservoirs. City of Los 

Angeles stores imported Owens River water in San Fernando and Chatsworth Reservoirs 

and at times discharges imported water into Los Angeles River above station. Excess 

treated sewage effluent from Los Angeles Sanitation Department is released to channel 

above Riverside Drive. Many diversions above station for domestic use and irrigation.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

lii

4.2

3.0

5.0

4.5

4.5

5.0

5.4

3.0

S^Q

3.5

4.0

4.2

4.0

4.2

3.5

2.8

3.5

4.5

5.0

5.0

4.5

4.0

3.5

4.5

4.5

4.2

5.0

4.0

3.8

3.0

127.2

4.10

252

Nov.

4.0

4.5

5.0

5.4

6.8

4.5

3.8

5.0

5.0

5.0

5.0

4.5

4.5

455is

6.8

20

11

4.2

4.0

174

29

8.6

8.6

_£*$_

2.8

2.5

2.5

3.5

3.2

814.2

27.1

1,610

Dec.

95

67

7.2

274

54

11

21

81

14

11

5.8

8.1

11

11

12

12

9.8

7.2

9.0

15

13

12

52

23

112

31

94

15

13

15

11

1,054.2

34.0

2,090

Jan.

9.0

6.8

15

19

14

14

14

14

14

14

14

14

16

15

11

15

17

15

15

15

18

11

25

22

1,100

7.290

568

64

25

116

369

9,888.8

319

19,610

Feb.

26

21

31

35

34

36

24

21

21

21

21

32

21

24

24

24

36

32

15

18

22

20

451

65

22

6,3

6.8

9.8

9.0 - - 

1,128.9

38.9

2,240

Mar.

9.0

9.8

8.6

5^8

6.3

8.1

7.6

8.6

15

28

23

22

29

31

32

30

26

14

16

17

16

15

17

13

9.0

8.6

12

12

13

15

12

489.4

15.8

971

Apr.

38

28

20

17

12

12

12

12

11

11

169

2.190

338

52

9.8

8.6

11

9.0

8.6

9.0

8.1

7.2

6.3

6.3

6.3

303

27

7.6

5^8

7.2

3,362.8

112

6,670

May

11

14

15

15

9.0

6.3

9.8

31

639

69

22

13

7.6

7.6

7.6

7.2

6.8

7.2

5.4

4.2

4.5

8.2

5.8

5.4

5.0

5.0

3.2

4.0

4.5

4.0

3.5

960.8

31.0

1,910

June

3.2

3.2

3.0

3.0

3.2

3.2

3.0

3.7

3.2

3.2

9.1

11

15

14

5.4

4.0

3.8

3.8

3.5

3.5

3.8

5.2

4.2

4.2

4.0

4.5

4.0

4.5

4.0

3.5

146.9

4.90

291

July

3i°

3.0

2.8

2.5

2.2

2.2

2.2

2.2

2.2

2.0

1.8

1.8

2.0

2.0

1.8

1.8

1.8

1.8

1.4

1.6

1.6

1.6

1.2

1.2

iifi

1.0

1.0

1.0

1.0

1.0

1.2

54.9

1.77

109

Aug.

1.6

1.2

.8

-il

1.0

1.3

1.2

.8

.8

.6

1.0

1.4

1.8

1.8

2±1

1.8

1.8

1.8

1.4

1.2

1.2

.6

.6

.8

1.2

1.4

1.4

2.0

1.6

1.4

1.4

39.7

1.28

79

Sept.

1.2

1.2

1.2

1.0

.8

.8

.8

^6

.6

.6

1.0

1.0

1.0

JL1

1.0

1.0

1.2

1.0

1.2

1.0

.8

.8

.8

.8

.8

1.0

1.0

.8

.6

.6

27.6

0.92

55

Calendar year 1955 : Max 1,510 Min i.o Mean 27.1 Ao-ft 19.59O

Water year 1955-56 : Max 7,290 Min 0.6 Mean 49.4 Ae-ft 35,89O
110 LOS ANGELES RIVER BASIN

Arroyo Seoo near Pasadena, Calif.

Location.--Lat 34°13'20", long 118°10'36" (revised), near north line of sec. 31, T. 2 N., 

R. 12 W., on right bank 1.5 miles upstream from Mlllard Canyon and 5.5 miles northwest 

of Pasadena.

Drainage area. 16.4 sq mi.

Records available. December 1910 to September 1956.

Gage.--Water-stage recorder and broad-crested weir. Datum of gage is 1,397.88 ft above 

mean sea level, datum of 1929. Prior to Oct. 1, 1916, staff gage at different datum. 

Oct. 1, 1916, to Oct. 19, 1945, water-stage recorder at datum 4.00 ft lower.

Average discharge.--42 years (1913-15, 1916-56), 9.20 cfs (6,660 acre-ft per year); 

median of yearly mean discharges, 5.0 cfs (3,600 acre-ft per year).

Extremes. Maximum discharge during year, 815 cfs Jan. 26 (gage height, 4.30 ft); no flow 

for many days.

1910-56: Maximum discharge, 8,620 cfs Mar. 2, 1938, from slope-area determinations; 

no flow at times during some years.

Remarks. - Records good. Discharge measurements generally made weekly. Minor regulations 

at cTebris dam 1.5 miles upstream.

Cooperation.--Twenty discharge measurements furnished by Los Angeles County Flood Control 

District.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Jan. 26, Mar. 3-8, June 5-10)

1.0 

1.3

0

.7

2.5

5.0

10

21

1.6 

2.0 

2.5 

3.0 

3.5

113

194

335

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

0.

0

0

0

.1

2.7

0.09

5.4

Nov.

0.1".'1

.1

.1

.1

.1

.1

.2

.1

.1

.1

.2

.1

.7

.3

.1

.1

.1

.1

.2

.4

.5

.2

.1

.2

.2

.2

.2

.2

.2

5.5

0.18

11

Dec.

ff-jj. ~!~7

.8

1.0

1.0

.0

.0

.0

.0

.0

.8

.8

.8

.7

.8

1.1

1.0

1.3

1.0

1.7

1.0

1.0

1.0

1.0

27.8

0.90

55

Jan.

0.8

.7

.7

.7

.7

.7

.7

.8

.8

.8

.8

.8

.8

.8

.8

.8

.7

, g

.6

.6

.7

.7

.8

.8

6.8

310

I5S

35

17

12

12

572.5

18.5

1,140

Feb.

7.9

S.3

5.4

5.2

4.7

4.2

3.7

3.4

3.4

3.2

3.0

2.7

2.7

2.7

2.7

2.7

2.5

2.5

2.5

2.5

2.3

2.3

"873 8.7

4.7

3.7

3.4

3.2

3.2

113.7

3.92

226

Mar.

3.2

3.2

2.7

2.5

2.5

2.3

2.3

2.3

2.3

2.3

2.3

2.1

2.1

.1

.1

.9

.9

.9

.9

.9

.9

.7

.7

.7

.5

.7

.5

.5

.3

.3

1.5

63.1

2.04

125

Apr.

1.9

1.9

1.7

1.7

1.5

1.5

1."

1.3

1.3

1.7

IS

11

12

8.2

8.2

6.6

5.7

4.7

4.0

3.7

3.2

3.2

3.2

3.2

6.8

6.6

4.4

4.0

4.0

145.8

4.86

289

May

3.7

3.4

3.2

3.0

3.0

3.0

2.7

2.7

li

9.0

S.3

4.7

4.2

3.7

3.4

3.2

3.2

3.4

3.0

2.7

2.5

2.1

2.3

2.5

2.7

2.7

2.5

2.5

2.5

2.3

2.1

112.2

3.62

223

June

1.7

2^0

1.9

1.7

1.7

1.7

1.7

1.3

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.3

1.3

1.3

1.5

1.5

1.1

1.0

1.0

.7

.6

7s

.5

.5

35.8

1.19

71

July

0.6

.6

.7

.7

.7

.6

.4

.3

.2

.2

.3

.4

.3

.3

.1

.1

.1

.2

.1

.1

.1

.1

.,1

.1

.1

.1

.1

.1

0

0

.1

7.9

0.25

16

Aug.

0.1

.1

.1

.1

.1

0

.1

.1

0

0

0

0

0

o

0

0

0

o

0

0

0

0

0

o

0

0

.1

. 3

72

.1

.1

1.5

0.05

5.. 0

Sept.

0

0

0

Calendar year 1955: Max 30 Min 0 Mean 1.77 Ac-ft 1,280

Water year 1955-56: Max 310 Min o Mean 2.97 Ac-ft 2,160

Peak discharge (base. 150 cfs). Jan. 26 (3:30 p.m.) 815 cfs (4.30 ft).
LOS ANGELES RIVER BASIN 

Los Angeles River near Downey, Calif.

Ill

Location. Lat 33°57'05", long 118°10'25", in San Antonio Grant, on downstream side of 

Firestone Boulevard Bridge, 1 mile upstream from Rio Hondo and 2.5 miles west of 

Downey, Los Angeles County.

Drainage area.--614 sq mi.

Records available.--March 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 98.37 ft above mean sea level (levels by 

Los Angeles County Flood Control District). Prior to Apr. 11, 1938, at site 2,000 ft 

downstream at different datum. Apr. 11, 1938, to Nov. 3, 1949, at present site at 

datum 3.21 ft lower.

Average discharge . --28 years, 96.5 cfs (69,860 acre-ft per year); median of yearly mean 

discharges, 62 cfs (44,900 acre-ft per year).

Extremes. Maximum discharge during year, 28,900 cfs Jan. 26 (gage height, 8.35 ft); 

minimum daily, 8.2 cfs Aug. 2.

1928-56: Maximum discharge, 79,700 cfs Mar. 2, 1938; no flow during parts of 

some years.

Remarks.--Flow regulated by Hansen and Sepulveda flood-control reservoirs (combined 

capacity, 49,400 acre-ft), and several small flood-control reservoirs. City of Los 

Angeles stores imported Owens River water in San Fernando and Chatsworth Reservoirs 

and at times discharges Imported water into Los Angeles River. Many diversions above 

station for domestic use and irrigation.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean 

Ac- ft

Oct.

12

12

11

14

15

14

12

13

12

12

12

14

15

13

14

13

13

14

18

15

14

11

9.2

9.2

9.9

11

12

9.9

11

11

10

386.2

12.5 

766

Nov.

11

12

12

10

12

14

14

16

16

17

18

16

14

705

34

28

39

30

24

IB

421

60

2B

13

12

12

12

15

16

17

1,666

55.5 

3,300

Dec.

177

155

27

396

104

28

33

23

25

21

15

12

20

22

21

18

17

15

13

17

19

20

42

27

157

26

92

30

28

30

28

1,658

53.5 

3,290

Jan.

23

i±

14

28

30

26

24

21

15

25

24

27

25

22

22

18

29

30

27

27

25

22

31

32

1,460

12,030

2,610

351

56

42

564

17,664

,570 

35^040

Feb.

46

41

42

42

42

46

46

44

44

44

42

44

41

41

41

41

41

41

40

39

40

41

614

147

74

55

41

34

____1|

1,923

66.3 

3,810

Mar.

24

24

24

24

24

25

25

24

27

32

33

34

41

46

19

46

42

39

32

36

32

31

30

29

27

25

28

28

28

28

28

965

31.1 

1,910

Apr.

67

46

38

36

39

38

36

36

34

36

165

3,320

783

187

72

47

38

28

22

21

20

20

21

20

20

645

63

31

30

29

_ __

5,988

200 

11,880

May

28

28

27

27

24

22

22

38

710

110

60

49

40

34

33

29

25

24

23

22

22

21

20

19

19

19

li

18

18

18

18

1,585

51.1 

3,140

June

18

18

18

17

17

17

17

18

20

21

23

24

26

27

25

24

22

21

19

18

16

16

16

16

16

16

16

16

16

16

_-_-_.

570

19.0 

1,130

July

16

15

15

15

15

15

14

14

14

14

13

13

13

14

14

14

14

15

15

It

13

13

12

11

10

9.3

9.1

9.0

8.8

8.7

jijji

398.4

12.9 

790

Aug.

8.3

1^

8.7

9.3

9.8

10

11

11

12

12

11

11

10

9.6

9.2

8.7

9.2

9.6

10

11

11

11

11

12

12

13

13

14

14

15

15

340.6

11.0 

676

Sept.

14

14

13

13

12

12

12

12

12

13

13

13

13

13

13

13

13

13

13

13

12

12

11

10

9.9

9.3

8^1

9.0

9.0

9.0

356.9

11.9 

708

Calendar year 1955: Max 2,470 Mln 9.2 Mean 54.5 Ac-ft 39,460

Water year 1955-56: Max 12,000 Min 8.2 Mean 91.5 Ac-ft 66,440
112 LOS ANGELES RIVER BASIN

Sawpit Creek near Monrovia, Calif.

Location (revised). Lat 34°10'23", long 117°59'18", in SWiSEtj-NWi sec. 13, T. IN., R. 

11 W., on left bank 0.1 mile downstream from Monrovia Creek, 0.3 mile downstream from 

Sawpit Dam, and 1.7 miles north of Monrovia.

Drainage area. 5.3 sq mi, approximately.

Records available.--November 1916 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is 1,100 ft (from 

"topographic map). Nov. 8, 1916, to Nov. 19, 1925, and Apr. 12 to Oct. 29, 1938, waterstage recorder at site 0.1 mile upstream at different datum. Nov. 20, 1925, to Mar. 2, 

1938, water-stage recorder at site 0.1 mile downstream at different datum (destroyed 

by flood). Oct. 30, 1938, to Oct. 3, 1951, water-stage recorder at present site at 

datum 1.00 ft higher.

Average discharge.--39 years (1917-56), 1.13 cfs (818 acre-ft per year); median of yearly 

mean discharges, 0.5 cfs (360 acre-ft per year). Average combined discharge of creek 

and diversion, 39 years, 2.51 cfs (1,820 acre-ft per year); median of combined yearly 

mean discharges, 1.8 cfs (1,300 acre-ft per year).

Extremes.--Maximum discharge during year, 113 cfs Jan, 26 (gage height, 4.25 ft); no flow 

during several months.

1916-56: Maximum discharge, about 2,000 cfs Apr. 7, 1926, estimated from flow of 

Rogers Creek; no flow during parts of most years.

Remarks. Records good. Discharge measurements or observations of no flow generally 

made two or more times a month. Flow regulated by Sawpit flood-control reservoir 

(capacity, 320 acre-ft). Figures of daily discharge do not include water diverted 

above station by city of Monrovia from Monrovia Creek.

Cooperation.--One discharge measurement furnished by Los Angeles County Flood Control 

District.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

( + )

Oct.

0

0

0

30

Nov.

0

0

0

31

Dec.

Q_

1 1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1.1

.1

.1.1

.1

.1.1

0.9

0.03

1.8

36

Jan.

0.1

.1

o

0

0

.1.1

0

.1

.1

.1

.1

0

0

o

.1.1

.1

.1

.1

.1

.1.1

.1

1.6

14

25

9.6

4.6

3.0

2.1

91.6

2.95

182

33

Feb.

1.9

TTe

1.3

1.1

1.0

.8

.8

.8

.7

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.6

.5

.4

1.0

.9

.9

.8

.8

.8

.7

22.6

0.78

45

66

Mar.

0^6

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.3

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

. 2

.3 

.2

.2

11.3

0.36

22

59

Apr.

0.3

.3

.2

.2

.3

.2

.2

.2

.2

.2

.2

.6

.8

.6

.6

.5

.4

.4

.4

.3

.3

.3

.3

.3

.2

.3

.3

.3

.3

.2

9.9

0.33

20

51

May

0^1

.1

.1

.1

.2

.2

.2

.2

.7

.6

.5

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.2

8.2

0.26

16

66

June

0.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

0

.1

.1

.1

.1

.1

.1

.1.1

.1

.1.1

0

0

.1

.1

0

2.4

0.08

4.8

48

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

2.9

.1

0

0

0

0

o

0

0

0

0

0

0

0

0

4.0

0.13

7.9

42

Aug.

0

0

0

37

Sept.

0

0

0

36

Adjusted for diversion

Ac-f t| 30 | 31 ] 38

Calendar year 1955 : 

Water year 1955-56 :

215 111 | 81 71 | 82 53

Observed

Max 9.6 

Max 44

Min o Mean 0.32 Ac-ft 235 

Min 0 Mean 0.41 Ac-ft 300

50 37| 36

Adjusted

Mean 0. 

Mean 1.

89 Ao-ft 645 

15 Ac-ft 835

t Diversion above station, in acre-feet, for Monrovia municipal supply, furnished by city of 

Monrovia.
LOS ANGELES RIVER BASIN 113

Santa Anita Creek near Sierra Madre, Calif.

Location. Lat 34°11'30", long 118°00'59", in SW&iE^NEi sec. 10, T.I N., R. 11 W., on right 

bank at head of Hermits Palls, 0.9 mile upstream from Big Santa Anita Dam and 3 miles 

northeast of Sierra Madre.

Drainage area. 10.5 sq mi.

Records available. July 1916 to September 1956.

0_ige.--Water-stage recorder. Datum of gage is 1,475.3 ft above mean sea level (levels by 

U.S. Forest Service). Prior to Mar. 2, 1938, at same site at datum 0.4 ft lower (destroyed by flood).

Average discharge. 40 years, 5.72 cfs (4,140 acre-ft per year); median of yearly mean 

discharges, 3.6 cfs (2,600 acre-ft per year).

Extremes. Maximum discharge during year, 661 cfs Jan. 26 (gage height, 5.82 ft); minimum 

daily, 0.4 cfs Oct. 1-3, 7-9, 12, 13.

1916-56: Maximum discharge, about 5,200 cfs Mar. 2, 1938, based on inflow to Big 

Santa Anita flood-control reservoir; practically no flow Aug. 18 to Sept. 14, 1929.

Remarks. Records good. Discharge measurements generally made twice a month.

Rating table, water year 1955-56 (gage height, In feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Jan. 31 to Feb. 6)

0.85 

.9

1.0

1.1

1.2 

1.4

0.4 

.8 

2.0 

3.8 

6.3

1.6 

2.0 

2.5 

3.0 

3.5

25

56

107

169

237

Discharge, In cubic feet per second, water year October 1955 to September. 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29 

30

31

Total

Mean

Ac- ft

Oct.

0.4

T4 

.4

.5

i§

.5

.4

.4

.4

.5

.5

.4

.4

.5

.5

.6

.6

.5

.6

.6

.6

.6

.6

.6

.5

.6

.6

.6 

.6 

.5

.6

16.1

0.52

32

NOV.

0.6

.6 

.6

.7

.6

.6

.6

.6

.6

.6

.6

.7

.8

1,9

1.1

.9

.9

.9

.8

.6

1.6

1.2

1.0

1.0

.9

.8

.8

.8 

.8 

.8

25.2

0.84

50

Dec.

1.7

fci

1.4

1.4

1.3

1.2

1.1

1.1

1.1

1|0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1

1.2

1.2

1.4

1.4

1.4

1.4 

1.3 

1.3

1.3

37.3

1.20

74

Jan.

1.3

1.3 

1.3

1.2

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1,0

1.0

1.0

1.1 1.1

1.2

1.2

13

213

83

19

13 

10

8 9

387.2

12.5

768

Feb.

7

6 

5.3

4.0

3.6

3.6

3.6

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

5, g

3.2

3.2

3.2

3.2

3.2

~6.6 12

4.7

4.5

4.3

4.3 

4.3

123.6

4.26

245

Mar.

4.0 z'.e

3.8

3.6

3.4

3.4

3.4

3.2

3.0

3.0

3.0

2.8

2.8

2.6

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

H2.3

2.3

87.6

2.83

174

Apr.

2.8

2.4 

2^3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.6

14

14

9.7

7.5

6.0

5.5

5.2

5.0

4.7

4.3

4.0

3.8

3.8

3.6

7.2

'5.2

4.0 

4.0 

4.0

141.7

4.72

281

May

4.0

3.8

3.6

3.6

3.8

3.7

3.8

11

6.6

5.5

5.0

4.7

4.3

4.3

4.0

4.0

3.8

3.8

3.8

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6 

3.6 

3.6

3.6

130.7

4.22

259

June

ia

3.4 

3.2

3.2

3.2

3.2

3.0

2.8

2.8

2.8

2.6

2.4

2.4

2.4

2.8

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.4

2.3

2.3

2.1

2.0

2.0

H

78.5

2.62

156

July

2.0

2.1

2.1

2.0

2.0

1.8

1.7

1.7

1.5

1.5

1.7

1.7

1.5

1.5

1.4

1.4

1.3

1.4

1.4

1.3

1.3

1.3

1.3

1.4

1.4

1.3

1.3 

1.2 

JU1

1.1

47.8

1.54 '95

Aug.

1.2

H1.2

1.1

1.1

1.1

1.1

1.1

.9

.9

1.0

.9

.9

.8

.8

.9

.8

.8

.8

.7

.7

"!lf t Q

.6

.8

1.0

1.2

1.2 

1.1

29.6

0.95

59

Sept.

0.9

[7

.7

.7

.7

.7

.6

.6

.6

.6

.7

.7

.7

.7

.7

.6

.6

.6

.7

.8

.7

.6

.6

.6

.6

.6

.6 

.6 

.6

19.8

0.66

39

Calendar year 1955: Max 14 Mln 0.3 Mean 1.90 Ac -ft 1,380

Water year 1955-56: Max 213 Mln 0.4 Mean 3.07 Ao-ft 2,230

Peak discharge (base. 40 cfs). Jan. 26 (4 p.m.) 661 cfs (5.82 ft).
114 LOS ANGELES RIVER BASIN

Little Santa Anita Creek near Sierra Madre, Calif.

Location. Lat 34° 11'13", long 118° 02'35", inSE^SW&Wj sec. 9, T.I N., R. 11 W., on right 

bank 1.3 miles upstream from Sierra Madre Dam and 2 miles north of Sierra Madre.

Drainage area. 1.9 sq mi, approximately. 

Records available.--April 1916 to September 1956.

Gage.--Water-stage recorder. Concrete control since Aug. 3, 1926. Altitude of gage is 

 S?,200 ft (from topographic map). Prior to Apr. 7, 1926, water-stage recorder at different datum (destroyed by flood).

Average discharge.--39 years (1916-25, 1926-56), 0.88 cfs (637 acre-ft per year); median 

of yearly mean discharges, 0.5 cfs (360 acre-ft per year).

Extremes.--Maximurn discharge during year, 46 cfs Jan. 26 (gage height, 1.87 ft); no flow 

for many days.

1916-56: Maximum discharge, 536 cfs Mar. 2, 1938, computed on basis of inflow to 

Sierra Madre flood-control reservoir; no flow during periods in some years.

Remarks. Records good. Discharge measurements generally made twice a month.

Bating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.4

.5

0 

.1 

.4 

.8

1.5

0.9 

1.0

1.2

1.3

2.6

4.1

8.9

12

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

o

0

0

0

0

0

0

0

.a.1

0

0

0

0

0

0 

0

0

0

.1

.1.1

.1

.1.1

0

.1

0

0

0

0

0.9

0.03

1.8

Nov.

0

.1

0

0

0

0

0

0

0

0

0

0

.1

.2

TT

.1 

.1

.1

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

2.1

0.07

4.2

Dec.

0,3

.2

.a.2

.1

.1

.1

.1

.1

.1

.1

.1.1.1.1

.1.1

.1.1

.1

.1

.1.1.1

.2

.2

.2

.2

.2

.2

.2

4.2

0.14

8.3

Jan.

0.2

.2

.2

jj

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.2

.2

.8

il

7.3

2.7

1.7

1.6

1.4

29.4

0.95

58

Feb.

1.1

1.0

.9

.9

.8

.8

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6 

.6

^1

.5

.5

.5

.5

1.4

1.0

.8

.8

.8

.8

.7

21.1

0.73

42

Mar.

O.G.

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

 4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

14.6

0.47

29

Apr.

0.5

.4

.4 :f

.3

.3

.3

.3

.3

.4

1*1

1.4

1.1

.8

.7 

.7

.7

.7

.7

.7

.6

.6

.6

.6

.9

.7

.6

.6

.6

18.5

0.62

37

May

0.6

.6

.6

.6

.6

.6

.6

^5

1*1

.8

.7

.7

.7

.7

.7

.7 

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.8

.8

.7

.7

21.4

0.69

42

June

a^i.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.5

.5 

.5

.4

.4

.5

.5

.4

.4

.4

.4

^

.3

.3

.3

.3

13.5

0.45

27

July

0.3

.3

.3

,.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3 

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

7.1

0.23

14

Aug.

Q^Z

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

4.6

0.15

9.1

Sept.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.0

0.10

6.0

Calendar year 1955: Max 2.1 Min 0 Mean 0.22 Ac-ft 161

Water year 1955-56: Max ll' Mln 0 Mean 0.38 Ac-ft 278

Peak discharge (base. 7.0 cfs). Jan. 26 (1:30 p.m.) 46 ofs (1.87 ft).
LOS ANGELES RIVER BASIN 115

Eaton Creek near Pasadena, Calif.

Location. Lat 34°11 1 37", long 118"06'13", in SW^SE^SE^ sec. 2, T. 1 N., R. 12 W., on 

right bank at mouth of canyon, Just upstream from bridge on old Mount Wilson toll 

road and 4.5 miles northeast of Pasadena.

Drainage area. 6.5 sq mi, approximately.

Records available. Creek: March 1918 to September 1956. Diversion: July 1923 to 

September 1956.

Sage.--Water-stage recorder and broad-crested weir. Altitude of gage is 1,230 ft (from 

Topographic map). Prior to Mar. 2, 1938, at site 75 ft downstream at different datum 

(destroyed by flood). Mar. 2 to Oct. 28, 1938,at site 75 ft downstream at different 

datum.

Average discharge. 38 years, 2.27 cfs (1,640 acre-ft per year); median of yearly mean 

discharges, 1.0 cfs (720 acre-ft per year). Average combined discharge of creek and 

diversion, 33 years, 3.46 cfs (2,500 acre-ft per year); median of combined yearly 

mean discharges, 2.2 cfs (1,590 acre-ft per year).

Extremes. Maximum discharge during year, 429 cfs Jan. 26 (gage height, 2.70 ft); no flow 

during most of year.

1918-56: Maximum discharge, 2,400 cfs Mar. 2, 1938, from record of inflow to Eaton 

flood-control reservoir; no flow at times during year.

Remarks. Records poor. Figures of daily discharge do not include water diverted above 

 JfEaTfion by city of Pasadena. In addition, 84 acre-ft was diverted by the city from

two infiltration galleries, one 800 ft upstream and the other 500 ft downstream from

station.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.0 

1.3 

1.5 

1.7

81

120

13

Discharge,. In cubic feet per second, water year October 1955 to September :.956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean 

Ac-ft

(t)

Oct.

(*)

0

0 

0

9.6

Nov.

0

0

0

0

13

Dec.

(*)

0

0 

0

28

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.5

100

*49

5.4

0

.2

*.5

155.6

5.02 

309

48

Feb.

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.9

0

0

0

0

0

*0

--------

1.9

0.07 

3.8

103

' Mar.

(*)

0

0

0

71

Apr.

0

0

0

0

0

0

0

0

0

0

0

1.5

1*1

.2

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

*0

4.1

0.14 

8.1

102

May

0

0

0

0

0

0

0

0

1.9

.8

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

2.7

0.09 

5.4

111

June

0

0 

0

44

July

(*)

(*)

0

0 

020-

Aug.

(*)

0

0 

0

12

Sept.

(*)

0

0 

0

7.8

Adjusted for diversion

Ac-ft| 9 -6 13 28

 i 

357 107 71 110 116 44

Observed

Calendar year 1955 : 

Water year 1955-56 :

Max H 

Max 100

Peak diseharpe (base, 55 cfs .

Min 0 

Min 0

--Jan. 26 (4

Mean 0.09 

Mean 0 . 45

30 p.m.

Ac-ft 63 

Ac-ft 326

20 12 7. .8

Adjusted

Mean 0. 

Mean 1 .

93 Ac-ft 670 

£3 Ac-ft 895

429 cfs (2.70 ft).

* Discharge measurement or observation of no flow made on this day. 

t Diversions above station, in acre-feet, for Pasadena municipal supply, furnished by city of 

Pasadena.
116 LOS ANGELES RIVER BASIN 

Rio Hondo above Whittier Narrows Dam, Calif.

Location. Lat 34 0 03'30", long 118°04'25", in Potrero Grande Grant, on right bank 0.3 mile 

downstream from Garvey Avenue, 0.4 mile downstream from Rubio Wash, and 2.2 miles west 

of El Monte, Los Angeles County.

Records available. February to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 220 ft (from topographic map).

Extremes.--Maximum discharge during period, 1,540 cfs Apr. 12 (gage height, 2.82 ft, from 

floodmarks}; no flow for many days.

Remarks.--Records good. Discharge measurements generally made three times per month or 

more often during storm periods. Flow regulated by Big Santa Anita, Sawpit, and Eaton 

flood-control reservoirs (combined capacity, 1,700 acre-ft), and Sierra Madre, Las 

Flores, and Rubio debris basins. Many diversions above station for domestic use and 

irrigation. At times flow is diverted from San Gabriel River below Santa Fe Dam to 

Rio Hondo above station.

Rating table, Feb. 16 to Sept. 30, 1956 (gage height, In feet, 

and discharge, In cubic feet per second)

1.02

1.1

1.2

1.3 

1.5 

1.7

.4

1.6

3.4

8.2

15

1.8

1.9

2.0

2.1 

2.3

27

57

107

ISO

400

Discharge, In cubic feet per second, February to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct. Nov. Dec. Jan. Feb.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.5

1.2

.9

.6

.4

1.9

.9

57

4.7

.6

.5

.4

.5

.9

- -----

-

-

-

Mar.

0.2

.5

0

0

.6

.7

1.0

.1

1.0

.8

0

.5

.7

1.0

0

0

.6

0

0

0

.1

.1

.1

.1

0

.1

0

1 . 2

72

0

.1

9.7

0.31

19

Apr.

3.4

.5

.1

.1

0

0

0

0

0

0

0

360

117

.9

.4

.1

.1

.1

.1

.1

107

5.3

.4

.2

.5

598.0

19.9

1,190

May

0.3

. 1

.4

.5

.5

.3

.,4

2.6

42

2.3

.8

.4

.2

.1

.4

.9

1.1

.8

.8

.2

.5

.6

.4

.4

.5

.3

.4

.8

.6

.1

.1

59.8

1.93

119

June

0

0

.1

.1

.1

.1

0

.1.1

0

0

.2

.1

.2

.1

.1

.1

0

.1

.1

.1

"725

.1

.1

.2

.5

.3

.2

.1

3.9

0.13

7.7

July

0.2

.1

.1

.1

o

.1

0

0

.2

.1

.2

.1

.1

0

0

.2

.1

.3

.6

.6

.2

.1

.6

.6

.1!

.8

.5

.2

.1

.8 

.4

8.2

0.26

16

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

. 1

. 1

.1

.1.1

0

0

0

.1

.1.1

.1

0

0

0

0

0

.1 .1

1.1

0.04

2.2

Sept.

0.1

.1

0

0

.2

.2

.2

.7

0

.1

.9

7T

0

0

0

0

0

0

0

0

0

.1

0

0

0

.1

0

.1

0

0

2.9

0.10

5.8

Calendar year : Max Mln Mean Ac -ft

Water year : Max Mln Mean Ac -ft
LOS ANGELES RIVER BASIN 117

Rio Hondo near Montebello, Calif.

Location. Lat 34°01'55", long 118°04'15", in Potrero Grande Grant, on right bank 1,000 

ft upstream from Mission Bridge and 2 miles northeast of Montebello, Los Angeles County.

Drainage area. 115 sq mi (excluding area above Santa Fe Dam). 

Records available. October 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 194.63 ft above mean sea level (levels by 

Los Angeles County Flood Control District).

Average discharge. 28 years, 52.5 cfs (38,010 acre-ft per year); median of yearly mean 

discharges, 37 cfs (26,800 acre-ft per year).

Extremes. Maximum discharge during year, 10,900 cfs Jan. 26 (gage height, 9.30 ft); minimum daily, 2.7 cfs Oct. 1, 2.

1928-56: Maximum discharge, 28,000 cfs Mar. 2, 1938 (gage height, 12.83 ft); minimum, 0.3 cfs Dec. 1, 1933 (gage height, 1.31 ft).

Remarks. Flow regulated by Big Santa Anita, Sawpit, and Eaton flood-control reservoirs 

(combined capacity, 1,700 acre-ft) and Sierra Madre, Las Flores and Rubio debris basins. 

Many diversions above station for domestic use and irrigation. At times flow is diverted from San Gabriel River below Santa Fe Dam to Rio Hondo.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed

by Geological Survey.

Revisions (water years).--WSP 844: 1938(M).

Discharge, In cubic feet per second, water year October 1955 to September J956

Day

1

t

3

4

5

6

7

e

9 

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31 

Total

Mean

Ac- ft

Oct.

2.7

2.7

2.8

3.4

3.0

3.0

3.6

3.1

3.1 

3.3

3.6

3.4

3.4

4.1

4.2

3.8

3.8

3.6

3.6

3.6

4.2

4.1

3.9

3.6

3.8

3.6

3.4

3.0

3.0

2.8

2.8

106.0

3.42

210

Nov.

3^4

3.6

3.6

3.8

3.9

3.9

3.4

3.4

3.6

3.6

3.6

3.6

3.4

269

5.7

5.4

15

6.2

6.2

6.2

254

6.5

6.0

4.7

6.0

5.4

4.7

5.7

5.2

5.4

664.1

22.1

1,320

Dec.

88

16

5.2

65

9.0

10

8.5

7.5

6.2 

5.7

5.2

4.9

4.7 ia4.4

4.4

4.7

4.7

4.9

4.9

4.9

5.2

14

15

32

4.9

5.4

4.7

4.4

5.2

4.4

368.4

11.9

731

Jan.

1±1

4.4

4.4

4.4

4.4

4.4

4.4

4.7

4.9 

4.7

4.9

5.4

5.2

4.9

4.7

4.4

4.4

5.2

4.4

4.4

4.4

4.4

6.S

5.2

554

5.520

196

7.5

7.5

18

113

4,529.8

146

8,980

Feb.

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5

7.5 

7.3

7.1

7.0

6.8

6.7

6.6

6.6

6.6

6.6

6.6

6.6

6.6

30

160

26

6.8

6.8

6.8

6.8

6.8

398.6

13.7

791

Mar.

6.8

6.8

6.7

6.7

6.6

6.5

6.3

6.2

6.2 

6.2

6.3

6.3

6.4

6.4

6.4

6.4

6.4

6.3

6.3

6.3

6.2

6.2

6.0

5.8

5.6

5.4

5.2

5.0

4.8

4.8

4.8

188.3

6.07

373

Apr.

17

7.6

7.6

7.6

7.6

7.6

7.6

7.6

7.6 

7.6

82

550

115

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

144

7.4

7.4 '^7.3

773

1,074.6

35.8

2,130

May

7.2

7.2

7.1

7.1

7.1

7.1

7.1

7.1

ISO 

8.0

8.0

8.0

8.0

8.0

8.0

8.0

7.3

7.1

6.9

6.7

6.6

6.6

6.9

5.0

4.6

4.6

4.6

4.6

4.5

475

4.5

348.0

11.2

690

June

4.6

4.7

4.8

4.9

5.1

5.2

5^3

5.1

4.9 

4.7

4.5

4.3

4.1

liO

4.0

4.0

4.0

4.1

4.1

4.1

4.1

4.2

4.3

4.4

4.5

4.6

4.8

4.9

4.9

4.9

136.1

4.54

270

July

4.9

4.9

4.9

4.9

6.5

6.1

5.7

5.3

4.9 

4.5

4.1

3.9

3.9

3.9

3.8

3.8

3.8

3/7

3.7

3.7

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.8

3.8

131.8

4.25

261

Aug.

3.8

3.8

3.7

3.6

3.5

3.4

3.3

3^2

3.2 

3.2

3.2

3.3

3.3

3.4

3.4

3.5

3.5

3.5

3.5

3.7

4.0

4.0

4.6

174

4.2

4.0

3.8

3.6

3.4

3.4

3.4

111.8

3.61

222

Sept.

3.4

3.4

3.5

3.5

i-1

3.6

3.6

3.5

3.5 

3.4

3.3

3.2

3,1

3.1

3.2

3.2

3.2

3.3

3.4

3.4

3.4

3.4

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.2

100.1

3.34

199

Calendar year 1955 : Max 748 Mln 1.8 Mean 15.4 Ac-ft 11,120

Water year 1955-56 : Max 3,520 Ml" 2 -7 Mean 22.3 Ac-ft 16,180

493801 O - 59 - 9
118 LOS ANGELES RIVER BASIN

Mission Creek near Montebello, Calif.

Location. Lat 34°01'45", long 118°04'07", in La Merced Grant, on upstream side of right 

abutment of San Gabriel Boulevard Bridge, 2 miles northeast of Montebello, Los Angeles 

County.

Drainage area. 6 sq mi, approximately.

Records available. October 1932 to September 1956 in reports of Geological Survey. October 1929 to September 1932 in reports of Los Angeles County Flood Control District. 

Prior to October 1944, published as Rio Hondo Slough near Montebello.

Gage.--Water-stage recorder. Altitude of gage is 195 ft, revised (from topographic map).

Average discharge. 26 years (1929-37, 1938-56), 15.9 cfs (11,510 acre-ft per year); 

median of yearly mean discharges, 15 cfs (10,900 acre-ft per year).

Extremes. Maximum discharge during year not determined, occurred Jan. 26; 'minimum daily, 

0.8 cfs July 31 to Aug. 4.

1929-56: Maximum discharge not determined, occurred Mar. 2, 1938; minimum daily, 

that of July 31 to Aug. 4, 1956.

Remarks. Flow is almost entirely from ground-water seepage. Increase in flow during 

period Dec. 24, 1955, to Feb. 22 1956, resulted from pumping of ground water into 

channel during construction of Legg Lake about 1 mile upstream.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survev.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

Itl l7T

1.1

1.1

l.l

1.1

l.l

1.1 

1.1

1.2

1.2

1.2

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.4

1^5

1.5

1.5

1.5

1.5

1.5

38.2

1.23

76

NOV.

1.5

1.5

1.1

1.1

1.1

1.1

1.2

1.2 

1.2

1.2

1.3

1.4

1.5

1.7

1.8

1.9

2.2

2.5

2.5

2.4

2.4

2.3

2.3

2.3

2.4

2.4

2.5

2.5

2 . 6

2.6

55.7

1.86

110

Dec.

2.7

2.7

2.7

2.8

2.8

2.9

2.9

2.9 2 9

sio

3.1

3.2

3.3

3.4

3.5

3.5

3.5

3.5

3.5

3.4

3.4

3.4

3.4

5.0

5.2

5.2

5.8

777

4.6

4.6

112.1

3.62

222

Jan.

4.6

4.7

4.6

6.2

6.2

5.7

6.0

5.3

5.7 

6.6

5.5

5.7

6.0

6.4

5.8

6.5

6.6

5.8

6.8

7.0

7.O

6.6

4.7

4.7

5.3

6.2

10

8.5

8.6

8.8

8.9

197.0

6.35

391

Feb.

9.0

9.1

176

8.2

7.7

7.2

6.8

6.3

5.8 

5.8

5.9

6.0

6.1

6.1

6.1

6.0

6.0

6.0

5.6

4.9

5.3

5.5

2.7

2.7

2.2

3.1

4.0

4.4

4.6

167.7

5.78

333

Mar.

4.8

4.8

4.7

4.7

4.4

4.1

3.9

4.3 

4.3

4.2

4.0

4.0

4.0

4.0

4.1

4.1

4.1

4.0

4.0

4.O

3.9

3.8

3.9

3.9

4.1

3.9

3.7

3.6

3.6

371

125.1

4.04

248

Apr.

3.3

3.5

3.5

3.4

3.2

3.4

3.1

3.1 

3.7

3.5

3.5

3.6

3.8

4.0

4.1

.3

.3

.4

.4

.4

.4

.4

.5

.5

.5

.7

.6

.6

4.5

117.6

3.92

233

May

4.7

4.8

4.8

4.4

4.2

4.0

4.5

4.4

4.1

4.1

4.9

4.8

4.7

4.6

4.5

4.5

4.5

4.4

4.4

4.3

4.3

4.2

4.2

4.2

4.2

4.2

5.2

4.9

4.7

4. 6

139.0

4.48

276

June

4.5

4.2

3.7

3.9

3.7

3.5

3.4

3.4

3.2

3.1

3.0

2.9

2.9

2.8

2.9

3.0

3.3

3.4

3.5

3.6

3.4

3.2

3.0

2.8

2.6

2.4

2.2

g . 1

2.1

94.9

3.16

188

July

1*3.

1.9

1.9

1.8

1.8

1.9

1.8

1.8

1.7

1.6

1.6

1.6

1.5

1.4

1.3

1.2

1.1

1.1

1.1

1.1

1.1

1.2

1.1

1.0

1.0

1.0

1.0

.9

.9

jji

42.9

1.38

85

Aug.

0,81

.8

.8

.8

.9

.9

1.1

1.1

1.0

1.1

1.1

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

JU1

1.3

34.2

1.10

68

Sept.

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.4

1.4

1.2

1.2

1.1

1*0

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.1

1.2

1.3

1.4

1.5

1.5

1.5

1.4

1.4

38.4

1.28

76

Calendar year 1955: Max 8.7 Mln 0.9 Mean 3.63 Ac-ft 2,630

Water year 1955-56: Max 10 Mln 0.8 Mean 3.18 Ac-ft 2,310
LOS ANGELES RIVER BASIN 119

Mission Creek below Whittier Narrows Dam, Calif.

Location. Lat 34"01'15", long 118"04'IS", near north boundary of Paso de Bartolo Grant, 

on left bank about 500 ft downstream from Whittier Narrows Dam and 1.4 miles north of 

Pioo, Los Angeles County.

Records available. December 1955 to September 1956.

Gage. Water-stage recorder and Parshall flume. Datum of gage is 187.1 ft above mean sea 

level (Corps of Engineers Survey).

Extremes. Maximum discharge during period, 8.3 cfs Jan. 10 (gage height, 0.72 ft); mlnimum daily, 0.4 cfs Feb. 23, 24, Apr. 20, Sept. 18.

Remarks. Records good. Discharge measurements generally made weekly. Plow is almost 

entirely from ground-water seepage. At times flow regulated by Whittier Narrows Dam; no 

regulation during 1956 water year.

Cooperation. Ten discharge measurements furnished by Los Angeles County Flood Control 

District.

Rating table, Dec. 21, 1955, to Sept. 30, 1956 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Jan. 14-19)

0.0

.1 

.2

0.3 

.5

2.4 

5.4

7.2

Discharge, in cubic feet per second, December 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac-ft

Oct. Nov. Dec.

.

_

-

.

-

.

-

-

-

.

.

.

_

-

.

_

_

.

-

2.8

2.8

4.1

4.2

4.1

4.1

4.1 

3.6

3.5

3 2

sii

.

_

-

Jan.

3.1

3.2

3.2

4.2

5.4

5.0

5.2 

4.7

4.2

6^0

5.0

5.0

5.5

5.6

5.0

4.4

4.5

4.6

5.0

5.2

4.6

3.8

4.7

4.5

3.3

1.3

37l

3.3

2.4

1.7

127.6

4.12

253

Feb.

1.6

1.5

1.6

1.6

1.5

1.4

1.5 

1.7

1.9

1.8

1.7

1.6

1.9

1.6

1.8

1.6

1.5

1.4

1.5

1.7

1.7

1.1

.4

74

.8

1.5

1.3 

1.4

1.3

42.3

1.46

84

Mar.

1.2

174

1.2

1.2

2.0

iii

2.8 

2.7

2.7

2.6

2.4

2.7

2.7

2.6

2.5

2.3

2.3

2.3

2.3

2.3

2.3

2.6

2.5

2.6

2.8

2.6

2.9 

2.5

2.4

2.4

2.4

73.1

2.36

145

Apr.

2.4

2.4

2.4

2.3

2.3

2.5

2.6

271

2.2

2.4

2.3

2.4

2.4

2.4

2.1

.9

1.8

2.5

2.3

j-1

1.4

2.5

2.4

2.4

2.4

2.3

2.2 

2.2

2.2

2.4

65.5

2.18

130

May

2.4

?75

2.6

2.8

2.8

2.6

2.6 

2.6

2.8

3.1

3.2

3.2

3.2

3.3

3.5

3.3

3.3

3.3

3.2

3.1

2.9

2.9

2.9

3.2

3.5

3.5

3.5 

3.5

3.5

3.5

3.3

95.6

3.08

190

June

3.1

3.2

3.2

3.1

3.2

3.1

3.1 

2.9

2.9

2.6

2.5

2.4

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.2

2.0

1.9

fcf

1.9

1*8

74.0

2.47

147

July

1.7

1.7

1.7

1.6

1.6

1.6

iff

1.6

1.6

1.5

1.4

1.3

1.2

1.2

1.2

1.2

1.2

1.1

1.0

.9

.9

.7

.7

.7

.7

.7 

.7

.7

.7

-i§.

36.9

1.19

73

Aug.

0.6

4.6

.7

.7

.8

.8 

.8

.6

.6

.6

.6

.7

.8

.8

.8

.8

"7? 1.0

.7

.7

.6

.6

.6

.6

.7

.8 

.9

.7

.7

.7

22.0

0.71

44

Sept.

0.8

.8

1.0

.9

.9

1.0

1.0

1.0

.9

.9

.6

.6

.5

.5

.5

.5

.5

.4

1.4

1.8

1.7

1.7

1.8

2.3

3.1

3.1

3.1 

3.2

3.2 

3.3

43.0

1.43

85

Calendar year : Max Mln Mean Ac-ft

Water year : Max Min Mean Ac-ft
120 LOS ANGELES RIVER BASIN

Rio Hondo near Downey, Calif.

-" 33°56'46", long 118°09'44", in San Antonio Grant, on left bank 

TOO ft upstream from Stewart and Gray Road Bridge, 0.6 mile upstream from mouth and 

1.5 miles west of Downey, Los Angeles County.

Drainage area. 140 sq mi (excluding area above Santa Fe Dam). 

Records available. --March 1928 to September 1956.

Gage.-- Water-stage recorder. Datum of gage is 91.4 ft (revised) above mean sea level 

' to Oct ' 31 - 1951 at s

"^ per year); median °f

Extremes Maximum discharge during year, 11,600 cfs Jan. 26 (gage height, 7.15 ft)- no 

i low during most of year.

Remarks . Flow regulated by Big Santa Anita, Sawpit, and Eaton flood-control reservoirs

(combined capacity, " r, 1,700 . acre-ft), . _ .,Whlttier _____ Narrows __ flood-control reservoir (capacity,

36,160 acre-ft), and Sierra Madre, Las Flores, and Rubio debris basins. Many diversjtons above station for domestic use and irrigation. At times flow is diverted from 

San Gabriel River below Santa Fe Dam and above Whittier Narrows Dam to Rio Hondo.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

V

0

0

0

0

0

0

0

0

0

0

0

204

1.2

.3

1.5

.7

0

0

~~6.4 243

0

0

0

0 

0

0

0

0

457.1

15.2

907

Dec.

52

27

0

-B-.4 6^

.4

.9

0

0

0

0

.2

0

0

0

0

0

0

0

0

0

0

23

2.5

34

2.2 

2.9

1.8

0

0

0

218.3

7.04

433

Jan.

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.3

.4

453

4,910 

564

23

33

68

136

6,189.7

200

12,280

Feb.

0.5

00"

0

0

0

0

1.3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

24

1. 8

1.1

0 

0

0

0

31.7

1.09

63

Mar.

0

0

0

Apr.

0.6

.4

00"

0

0

0

0

0

0

4.2

~T§ 229

2.8

.4

0

0

0

0

0

0

0

0

0

0

58 

2.1

1.2

0

0

376.7

12.6

747

May

0

ff

0

0

0

0

0

.2

~~.8 52

0

0

0

0

0

0

0

0

0

0

0

0

0

2.0

0

0 

0

0

0

0

0

55.0

1.77

109

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 753 Mln 0 Mean 10.5 Ao-ft 7,630

Water year 1955-56: Max 4,910 Mln 0 Mean 20.0 Ao-ft 14,540
LOS ANGELES RIVER BASIN 121

Los Angeles River at Long Beach, Calif.

Location (revised).--Lat 33°49'05", long 118°12'15", in Los Cerritos Grant, on right bank 

5,000 ft upstream from Willow Street, 3.4 miles north of Long Beach, Los Angeles County, 

and 3.7 miles upstream from mouth. Prior to Jan. 20, 1956, at site 2 miles downstream.

Records available.--December 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 11.91 ft above mean sea level (levels by 

Eos Angeles County Flood Control District). Prior to Oct. 31, 1931, at site 3 miles 

downstream at different datum. Oct. 31, 1931, to Jan. 19, 1956, at site 2 miles downstream at different datum.

Average discharge.--27 years (1929-56), 142 cfs (102,800 acre-ft per year); median of 

yearly mean discharges, 96 cfs (69,500 acre-ft per year).

Extremes. Maximum discharge during year, 40,500 cfs (estimated on basis of measured inflow) Jan. 26; minimum daily, 7.0 cfs July 8, Aug. 13.

1928-56: Maximum discharge, 99,000 cfs Mar. 2, 1938; no flow at times in 1929-30, 

1934.

Remarks. Flow regulated by several flood-control reservoirs. City of Los Angeles stores 

Imported Owens River water in San Fernando and Chatsworth reservoirs and at times 

discharges imported water into Los Angeles River above station. Many diversions above 

station for domestic use and irrigation.

Cooperation.--Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

16

17

17

18

18

18

18

17

17

16

15

15

15

15

16

17

17

18

19

T§

18

17

16

15

14

13 

12

12

12

12

12

491

15.8

974

Nov.

12

12

12

12

13

14

14

15

16

16

16

16

16

1,550

274

42

57

78

29

22

585

345

23

16

16

15 

14

13

12

10

3,065

102

6,080

Dec.

9.0

98

44

319

25T

24

21

16

17

18

19

20

21

22

22

22

22

22

23

23

23

23

36

80

217

68 

82

44

27

27

27

1,731.0

55.8

3,430

Jan.

29

32

34

37

39

38

37

36

35

34

33

32

31

30

30

30

30

31

31

29

28

27

3T

36

3,290

21,700 

3,676

427

98

60

600

30,625

988

60,740

Feb.

100

55

51

52

53

53

51

46

44

41

39

37

36

39

40

39

38

44

32

22.

29

27

553

2g9

68

34 

24

31

29

1,976

68.1

3,920

Mar.

30

28

26

22

21

25

25

26

29

35

33

30

44

4T

41

41

38

30

24

31

32

32

26

28

23

26" 20 

27

28

28

27

917

29.6

1,820

Apr.

61

118

36

32

32

29

28

24

20

26

115

5.250

1,460

315

50

46

42

33

29

25

23

21

23

21

25

922 

163

35

20

18

7,042

235

13,970

May

21

25

29

31

22

13

15

18

2Co" 836

36

22

14

13

14

18

20

20

20

11

8.5 i3

18

19

17

16 

12

11

15

14

10

1,551.5

50.0

3,080

June

11

12

9.7

9.7

13

15

16

15

10

8.5

12

16

18

24

25

10

8.2

l£j

13

15

15

13

14

8.5

8.2

10 

12

11

14

14

385.8

12.9

765

July

8.2

9.7

11

9.7

10

11

11

7.0

T76

9.7

9.1

10

10

9.4

11

9.7

8.8

10

13

11

11

8.8

9.4

16

18

16 

16

13

9.1

9.1

13

336.3

10.8

667

Aug.

15

15

14

13

10

8.8

10

13

15

13

11

7.9

7.0

9.^

9.1

9.4

9.7

10

9.1

8.8

11

13

13

16

T6

11 

11

15

15

14

14

366.9

11.8

728

Sept.

12

8.8

8.8

8.5

13

15

12

11

7.3

77S

11

11

9.4

9.1

9.4

7.3

7.6

17

15

11

16

16

10

8.8

11

14 

14

11

11

9.7

328.3

10.9

651

Calendar year 1955: Max 3,520 Mln 2.2 Mean 86.0 Ac-ft 62,270

Water year 1955-56: Max 21,700 Min 7.0 Mean 133 Ao-ft 96,820
122 BALLONA CREEK BASIN

Ballona Creek near Culver City, Calif.

Location (revised). Lat 33°59'48", long 118°24'07", In La Ballona Grant, on downstream 

side or Sawtelle Boulevard Bridge, 1.7 miles south of Culver City, Los Angeles County, 

and 4 miles upstream from mouth.

Drainage area.--88.6 sq ml, excludes that of Sepulveda Creek. Prior to January 1951, 

ill sq ml, change due to tributary channel realignment.

Records available.--February 1928 to September 1956 (after December 1950, flow of Sepulveda Creek excluded).

Gage. Water-stage recorder. Datum of gage Is 11.26 ft above mean sea level (levels by 

~Los Angeles County Flood Control District). Prior to May 14, 1936, at site 1 mile downstream at different datum.

Average discharge.--6 years (1950-56), 40.6 ofs (29,390 acre-ft per year).

Extremes. Maximum discharge during year, 18,700 cfs Jan. 26 (gage height, 15.10 ft); mlnImum dally, 5.2 ofs Nov. 11, 13.

1928-56: Maximum discharge, 19,000 cfs Mar. 2, 1938 (gage height, 15.2 ft); no flow 

during parts of some years.

Remarks . Occasional discharge of Imported Owens River water from several storage reser- 

 volrs of the City of Los Angeles Department of Water and Power Into the creek above 

station. Some small pumping diversions above station for Irrigation.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Revisions (water years). WSP 881: 1938.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.1 r^

7.5

7.9

8.0

6.0

8.4

8.4

6.0

6.7

6.0

7.1 

7.5

6.0

6.6

7.1

8.0

6.8

8.8

8.4

8.4

8.4

7.5

7.5

8.0

7.1

7.1

6.4

7.5

6.0

7.5

245.6

7.93

466

Nov.

6.0

7.5

7.1

6.4

8.8

6.4

7.1

5.9

5.6

5.9

5.2

BT6 

5.2

636

TT

8.4

42

9.0

7.5

7.1

412

10

6.0

6.7

6.8

7.1

6.0

9.2

10

6.0

1,497.5

49.9

2,970

Dec.

151

11

6.3

~9".6 205 

37

10

7.1

7.1

6.7

7.1

7.5 

7.1

6.7

7.5

6.0

7.5

7.1

6.0

9.6

S.6

8.6

61

55

65

76

17

11

6.3

11

14

664.6

28.5

1,750

Jan.

9.2

8.4

6.4

6.0

6.8

9.1

6.4

6.0

7.1

7.1

8.0

7.5 

6.6

6.0

6.0

8.0

7.5

6.3

6.7

6.3

5.9

6.3

25

5.6

1,601 

6.51O

322

20

16

145

134

6,951.4

289

17,75O

Feb.

14

14

12

11

11

12

12

12

13

12

12

10 

10

9.6

9.2

97S- 8.6

9.6

9.6

11

10

10

-36 333

10

6.8

9.2

9.6

9.2

66O.2

22.8

1,310

Mar.

6.6

9.2

6.8

?72- 6.4

9.6

6.6

9.2

8.8

9.6

9.2

11 

10

10

9.6

11

11

11

12

10

10

9.6

10

10

11

14

TT

14

13

14

13

327.6

10.6

650

Apr.

66

14

14

10

10

10

10

9.6

11

9.2

213

1.290 

246

16

12

12

12

12

12

9.6

10

9.6

10

1O

10

439

24

10

12

12

2,565.0

85.5

5,090

May

12

14

14

13

13

13

13

69

436

T?

10

11 

1Z~9.6

14

12

12

14

13

12

12

12

11

12

10

12

10

12

12

12

15

656.6

27.7

1,700

June

14

13

12

15

13

14

13

12

12

12

12

12 

12

13

12

12

12

12

13

9.6

9.6

9.2

6.8

ITT^ 8.4

11

12

15

12

14

359.6

12.0

713

July

15

TS~ 19

16

17

12

12

11

12

11

12

13 

10

To

10

13

12

13

13

13

14

12

14

13

13

14

14

12

10

13

11

399

12.9

791

Aug.

11

12

13

12

10

14

Tf

12

12

12

12

12 

14

12

14

12

12

11

10

12

10

10

12

12

10

10

12

10

10

12

12

361

11.6

716

Sept.

11

To" 10

10

12

12

10

10

10

12

12

12 

12

13

T?

12

12

11

10

10

12

11

10

11

12

12

12

11

11

10

335

11.2

664

Calendar year 1955: Max 1,210 Mln 5.2 Mean 30.9 Ac-ft 22,400

Water year 1955-56: Max 6,510 Mln 5.2 Mean 47.7 Ao-ft 34,590
TOPANGA CREEK BASIN 123

Topanga Creek near Topanga Beach, Calif.

Location. Lat 34°03'50", long 118°35'10", in Boca de Santa Monica Grant, on downstream 

side of right abutment of highway bridge, 1.7 miles (revised) north of Topanga Beach, 

Los Angeles County.

Drainage area.--17.9 sq mi.

Records available. January 1930 to September 1938, October 1939 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 265.60 ft above mean sea level (levels by 

las Angeles County Flood Control District). Prior to June 5, 1940, at different datum. 

June 5, 1940, to Dec. 9, 1941, at site 400 ft upstream at different datum.

Average discharge. 25 years (1930-38, 1939-56), 5.42 cfs (3,920 acre-ft per year); median 

of yearly mean discharges, 2.0 cfs (1,400 acre-ft per year).

Extremes. Maximum discharge during year, 1,540 cfs Jan. 26 (gage height, 6.11 ft); no 

flow Dec. 14, 15, 21, 22, Jan. 13, 17, Sept. 2, 3.

1930-38, 1939-56: Maximum discharge, 7,960 cfs Mar. 2, 1938; no flow at times.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

O.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

.02

O.62

O.02O

1.2

Nov.

"752 0.02

.02

.02

.02

.02

.04

.02

.02

.02

.02

.02

.04

1.1 3^

.05

.05

.05

.05

.04

.2

.1

.05

.05

.05

.05

.05

.05

.05

.05

2.41

0.080

4.8

Dec.

0.1

.1

.04

.3

.1

.1

.1

.05

.04

.05

.05

.04

.01

0

T5

.01

.02

.05

.04

.04

0

0

.1.1

.5

.3

.5

.1

.1

.1

.1

3.14

0.101

6.2

Jan.

0.1

.1

.05

.05

.04

.05

.05

.07

.05

.05

.04

.04

0

.04

.04

.01

0

.01

.01

.04

.1

.1

.1

.1

6.1

337 ~ZZ

5.9

3.0

3.0

8.5

386.74

12.5

767

.Feb.

3.2

1.9

1.7

1.4

1.1

1.0

.8

.7

.6

.5

.5

.5

.5

.5

.5

.4

.3

.3

72" .2

.2

.3

9.9

377

1.8

1.4

.9

.8

- ...:?

36.6

1.26

73

Mar.

"75 0.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.4

.3

.4

.4

72" .2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.3

12.7

0.41

25

Apr.

O.3

.Z

7?

.Z

.Z

.Z

.2

.2

.Z

.Z

2.7

11-5.0

2.3

1.7

1.3

1.0

.8

.8

.6

.6

.5

.3

.3

.2

5.5

1.5

.9

.8

.7

40.6

1.35

81

May

0.6

.6

.5

.5

.6

.3

.2

75

~2". 13 7

1.5

1.3

.8

.7

.7

.6

.5

.5

.4

.3

.3

.3

.3

.4

.4

.4

.4

.4

.3

.3

.3

30.4

O.98

6O

June

"72" 0.3

.1.1.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.07

TOT

.07

.07

4.08

0.136

8.1

July

O.O7 ~70T

.07

.07

.07

.07

.07

.07

.07

.07

.07

.07

.07

.05

.05

.04

75?

.05

.05

.05

.05

.05

.07

.07

.07

.07

.05

.05

.05

.05

.05

1.87

O.O6O

3.7

Aug.

O.04

.04

.04

.04

.05

.05

.05

.05

.05

.04

.02

.02

.02

.01

751

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

0.69

O.O22

1.4

Sept.

0.01

O

T5

.02

.02

.02

.01

.01

.01

.01

.01

.02

.02

.02

.02

.02

.02

.02

.04

7C¥

.04

.04

.04

.04

.02

.02

.02

.02

.02

.02

0.62

0.021

1.2

Calendar year 1955: Max 33 Mln O Mean 0.479 Ao-ft 347

Water year 1955-56: Max 337 Mln o Mean 1.42 Ao-ft 1,03O
124 MALIBU CREEK BASIN

Malibu Creek at Crater Camp, near Calabasas, Calif.

Location.--Lat 34°04'30", long 118°42'05", in SWv sec. 18, T. 1 S., R. 17 W., on right 

bank 0.2 mile downstream from Crater Camp and 6 miles southwest of Calabasas.

Drainage area. 103 sq mi.

Records available. January 1931 to September 1956.

Gage. Water-stage recorder. Datum of gage is 430.51 ft above mean sea level (levels by 

Los Angeles County Flood Control District).

Average discharge.--25 years, 19.4 cfs (14,050 acre-ft per year); median of yearly mean 

discharges, 6.4 cfs (4,600 acre-ft per year).

Extremes. Maximum discharge during year, 3,600 cfs Jan. 26 (gage height, 7.30 ft); minimum daily, 0.1 cfs for many days.

1931-56: Maximum discharge, 13,600 cfs Mar. 15, 1952 (gage height, 19.1 ft); no 

flow for periods in some years.

Remarks. Plow regulated by many small recreational reservoirs.

Cooperation. Records furnished by Los Angeles County Flood Control District and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

~;T 0.1

.1

.1

.1

.2

72

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2 

.2

.1

.1

.1

.2

5.4

0.17

11

Nov.

0.2

.2

.2

.3

.3

.3

.2

.1

71

.1

.2

.2

.2

.5

75

.2

.2

.2

.2

.2

.3

.2

.1

.1

.1

.1

.1

.1

.2

.2

5.9

0.20

12

Dec.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

7T

.3

73

.3

.2 

.2

.2

.2

.2

.2

6.3

0.20

12

Jan.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.6

1.260 

424

90

42

17

24

1,862.4

60.1

3,690

Feb.

23

13

10

8.8

8.0

7.0

6.1

5.5

4.6

4.2

4.2

4.2

4.2

4.2

4.2

3.9

3.9

3.5

3.5

3.5

3.3 575"

8.3

7.0

5.2

4.6 

4.4

4.2

4.2

174.2

6.01

346

Mar.

3.9 379"

3.9

3.9

3.9

3.7

3.7

3.5

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.3

3.3

3.5

3.0

3.0

3.0

3.3

3.0

2.6 

2.4

2.1

2 g \

2.3

2.4

103.0

3.32

204

Apr.

2.4

2.3

2.4

2.3

2.1

2.1

2.1

2.1

2.1

2.1

2.6

6.4

6.7

4.6 3!?

3.3

3.0

2.8

2.6

2.6

2.6

2.3

2.4

2.6

2.6

4.9 

2.8

2.4

2.3

2.3

87.5

2.92

174

May

2.1

2.1

2.6

2.1

2.1

2.1

2.1

2.3

4.4

375

3.5

3.5

2.6

2.3

2.3

2.1

2.3

2.0

2.0

1.8

1.8

1.8

1.8

1.8

1.8

1.7 

1.7

1.5

1.4

T7I

1.4

67.9

2.19

135

June

1.4

T7I

1.4

1.2

1.0

1.0

1.0

1.0

1.0

1.0

.8

.8

.8

1.0

1.0

1.0

1.0

1.0

1.0

.8

.8

.6

.6

.6

.6

.6 

.6

75" .5

.5

26.5

0.88

53

July

0.5 -74

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

7z~ .2

.2 

.2

.2

.2

.2

.3

9.6

0.31

19

Calendar year 1955: Max 16 Mln 0.1 Mean 1.07 Ac-ft 774

Aug.

0.3 "73-

.3

.3

.3

.2

72

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.7

0.22

13

Sept.

0.2

'.2

.2

.2

.2

.2

.1

71

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.7

0.12

7.3

Water year 1955-56: Max 1,260 Mln 0.1 Mean 6.45 Ac-ft 4,680
SANTA CLARA RIVER BASIN 125

Santa Clara River at Los Angeles -Vent ura County line, Calif.

Location. Lat 34°23'59", long 118°42'14", in San Francisco Grant, on downstream end of 

old diversion weir on right bank, 0.8 mile west of Los Angeles-Ventura County line.

Drainage area. 651 sq mi.

Records available . October 1952 to September 1956.

~Gage . Water-stage recorder. Datum of gage is 794.93 ft above mean sea level, datum of 

-56: Maximum discharge, that of Jan. 26, 1956; minimum daily, 0.2 cfs Sept. 12,

Extremes .--Maximum discharge during year, 878 cfs Jan. 26 (gage height, 3.38 ft); minimum 

daily, 0.3 cfs Sept. 21-30.

1952-5 

1955.

Remarks. Records fair. Discharge measurements generally made once a week. Plow at 

-station affected by pumpage from wells along stream for irrigation above station.

Cooperation. Gage-height record, 68 discharge measurements, and computations of daily 

discharge furnished by Venture County Water Resources Division; 24 discharge measurements furnished by Los Angeles County Flood Control District; 11 discharge measurements 

made and records reviewed by the Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.6

.7 

.9

1.0

.9

.6

.4

.6

.7

1.0

1.0

.9

1.0

ill

1.1

1.0

.9

.9

.9

.8

.8

.8

.6

.5

.6

.8

.8

.7

.7

.7

.9

24.9

0.80

49

Nov.

1.0

1.0 

.9

1.0

1.1

1.1

1.0

.9

1.0

1.2

1.2

1.2

1.4

2.6

1.5

1.2

1.4

1.2

1.2

1.2

2.1

1.7

1.4

1.2

1.1

1.1

1.2

1.2

1.4

1.5

38.2

1.27

76

Dec.

1.5

1.5 

1.4

2.3

1.5

1.2

1.2

1.2

1.2

1.2

1.2

O"1.1

1.2

1.2

1.2

1.4

1.4

1.4

1.7

1.4

1.5

1.5

1.7

5i2

2.1

2.1

1.5

1.4

1.4

1.4

46.4

1.50

92

Jan.'

1.4

1.4 

1.4

1.5

1.5

1.4

1.4

1.2.

1.2

1.2

1.4

1.5

1.9

2.5

3.2

4.3

4.6

5.0

5.7

6.5

6.9

7.4

7.9

8.4

22

514

2^9

27

23

28

23

956.8

30.9

1,900

Feb.

20

19 

19

19

20

20

18

17

16

16

16

16

16

16

16

15

15

15

16

16

16

16

21

20

19

18

18

18

17

504

17.4

1,000

Mar.

17

17 

17

17

17

17

16

18

Tf

17

16

16

15

15

14

12

11

11

10

10

10

10

10

10

10

10

10

9.4

8.9

7.4

6.9

402.6

13.0

799

Apr.

7.4

6.9 

5.7

4.6

3.7

3.4

3.4

3.7

4.3

4.6

5.7

36

21

11

9.4

9.4

9.9

10

10

8.9

8.4

8.4

8.4

8.4

9.4

12

10

9.4

9.4

9.4

272.2

9.07

540

May

8.9

8.4 

8.4

8.4

8.4

8.4

8.9

11

30

19

14

12

11

11

11

10

9.9

9.4

8.9

8.9

8.9

9.4

9.9

11

11

11

9.9

9.9

9.9

9.4

8.9

335.1

10.8

665

June

8.4

H8.9

7.4

5.4

4.3

4.0

4.0

4.0

3.7

3.7

3.7

3.7

2.9

2.9

3.2

2.7

2.5

2.5

2.1

2.3

2.3

1.9

1.9

2.3

2.3

2.3

1.7

l._5_

117.3

3.91

233

July

1.5

H

1.7

1.5

1.5

1.5

1.4

1.4

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.2

1.1

1.1

1.1

1.0

1.0

1.1

1.0

1.0

.8

.8

.5

.6

.8

35.8

1.15

71

Aug.

1.0

1.4 

1.5

1.2

.9

.8

.8

.8

.9

.9

1.0

1.0

.6

i

.5

.9

.9

1.0

.8

.8

.6

.6

.6

.7

.8

.9

1.0

.8

.8

.8

26.3

0.85

52

Sept.

0.8

.8 

.9

ii

.9

.8

.7

.6

.5

.6

.5

.5

.5

.4

.4

.4

.4

.4

.6

75" .3

is

.3

.3

.3

.3

.3

.3

.3

15.8

0.53

31

Calendar year 1955 : Max 88 Mln 0.2 Mean 6.62 Ac -ft 4,800

Water year 1955-56 : Max 514 Min 0.3 Mean 7.58 Ac-ft 5,510
126 SANTA CLARA RIVER BASIN 

Piru Creek above Lake Piru, Calif.

Location. Lat 34°31'40", long 118°45 I 21", on right bank at Blue Point, 1.0 mile downstream from Aqua Blanca Creek, 4.6 miles upstream from Santa Felicia Dam, and 8.0 miles 

northeast of Piru, Ventura County.

Drainage area. 371 sq ml.

Records available.--October 1955 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 1,063.62 ft above mean sea level (levels by 

Ventura County Water Resources Division).

Extremes.--Maximum.discharge during year, 1,230 cfs Jan. 27 (gage height, 6.21 ft), from 

rating extended above 220 cfs on basis of slope-area determination of peak flow; no 

flow Oct. 1 to Nov. 9, Aug. 10 to Sept. 30.

Remarks.--Record poor prior to Dec. 23, good thereafter. Discharge measurements generally made once a week.

Cooperation. Forty-seven discharge measurements were furnished by the Ventura County 

Water Resources Division.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 26 Jan. 27 to Sept. 30

1.65

1.7

1.8

1.9

2.0 

2.2 

2.4

1.0

1.5

2.8

4.7

7.2

15

28

3.5

4.0 

4.5 

5.0

99

195

325

495

670

1.4

1.5

1.6

1.7

1.8 

2.0 

2.3

.1

.3

1.4

4.2

11

28

2.5 

3.0 

3.5 

4.0 

4.5 

5.0 

5.5

46

123

220

340

495

670

880

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

3

63

2.10

125

Dec.

} *

1-

 >

5

11

115

~53 128

43

29

24

22

548

17.7

1,090

Jan.

18

17

15

14

14

13

13

12

12

12

11

11

11

11

11

10

10

9_.9

979

10

10

1111

12

33

534

704

218

120

72

2,051.8

66.2

4,070

Feb.

58

48

42

40

39

37

35

31

29

27

26

24

24

22

22

20

20

20

21

20

20

20

28

26

24

20

19

19

18

799

27.6

1,580

Mar.

17

17

16

16

16

14

14

14

14

14

14

13

13

13

12

12

12

11

12

11

11

11

11

11

11

11

11

11

11

11

11

396

12.8

785

Apr.

12

13

13

12

11

11

9.8

9.8

Q 4. fir

13

89

62

39

32

31

39

40

40

40

40

39

34

29

26

32

31

35

28

25

854.4

28.5

1,690

May

22

20

18

17

18

17

16

16

5046"

50

40

32

27

24

21

19

18

17

16

14

13

12

12

13

13

12

12

11

11

11

638

20.6

1,270

June

9^8

9.4

9.0

8.6

8.0

7.6

6.6

6.2

4.9

4.6

4.2

3.6

3.3

2.7

2.7

2.1

.9

.6

.6

.6

.6

.4

.2

1.1

.9

.8

.7

.6

.5

jjL

109.2

3.64

217

July

0.4

.4

.5

.6

.6

.5

.4

.3

.3

.3

 ?

if

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

'.Z

.2

.2

.2

8.5

0.27

17

Aug.

Oj2

.2

.2

.2

.1

.1

.1

.1

.1

p_

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.3

0.04

2.6

Sept.

0

0

0

Calendar year 1955 : Max - Mln - Mean - Ac-ft -

Water year 1955-56 : Max 704 ' Mln 0 Mean 14.9 Ac-ft 10,850

Peak discharge (base. 800 cfs).--Jan. 27 (3:30 a.m.) 1,230 cfs (6.21 ft).

Mote. No gage-height record Oct. 1 to Dec. 23, Jan. 1-3; discharge estimated on basis of field 

observation of first day of flow, recorded range In stage, 9 discharge measurements, weather records, 

and records for nearby streams.
SANTA CLARA RIVER BASIN 127

Lake Piru near Piru, Calif.

Location. Lat 34 8 27'52", long 1188 44'57", in Temescal Grant, at Santa Felicia Dam on Piru

 Creek, on left bank 1,000 ft upstream from left end of dam, 0.5 mile downstream from 

Santa Felicia Canyon, and 4.2 miles northeast of Piru, Ventura County.

Drainage area. 424 sq mi.

Records available. May 1955 to September 1956.

». Staff gage read once daily. Datum of gage is at mean sea level (levels by United 

water Conservation District). Prior to Jan. 27, 1956, reference point at Intake tower 

at same datum.

Extremes. 1955; No usable contents during period May to September 1955.

 1955-56: Maximum contents observed during water year, 6,826 acre-ft May 14 (elevation, 931.0 ft); minimum, no usable contents during October, November, and December.

Remarks. Lake is formed by earth-fill dam. Storage began May 20, 1955. Area and capacity 

ratings are based on surveys made in 1949 and 1956. Dead storage below outlet gate 

(elevation, 890.0 ft), 426 acre-ft, included in contents. Capacity below spillway level 

(elevation, 1,055.0 ft), 101,225 acre-ft. Water is released from outlet to Piru Creek 

for ground-water recharge, domestic use and irrigation on the Oxnard plain.

Cooperation. Elevations furnished by United Water Conservation District.

Monthly elevation and contents, water year October 1955 to September 1956

Month

April

Mav

Elevation 

(feet)t

891 4

921 S

916 6

907.7

-

Contents 

(acre-feet)

(a)

6 CO A

3 843

2,287

-

Change In contents 

(acre-feet)

.7-1 *

-782

-774

+2,287

a Storage reported as negligible.

t Elevation at a a.m. on first day of each month.
128 SANTA CLARA RIVER BASIN

Piru Creek below Santa Felicia Dam, Calif.

Location.--Lat 34°27'37", long 118°45'04", on right bank 750 ft downstream from Santa 

Felicia Dam, 1 mile upstream from Lime Canyon, and 4 miles northeast of Piru, Ventura 

County.

Drainage area.--424 sq mi.

Records available. October 1955 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 858.8 ft (levels 

by United Water Conservation District). Auxiliary water-stage recorder If miles downstream.

Extremes. Maximum discharge during year, 114 cfs May 15 (gage height, 2.52 ft); no flow 

for many days.

Remarks. Records good. Discharge measurements or observations of no flow generally made 

twice a month. Flow regulated by Piru Reservoir since May 20, 1955 (see preceding page).

Cooperation. Two discharge measurements furnished by United Water Conservation District.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

1.0

1.1

1.2

1.3

1.4

0

.2

.7

1.6

3.3

1.5

1.6

1.7 

1.9 

2.2

5.8

9.4

14

26

59

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ae-ft

Oct.

0

0

0

Nov.

0 

15

0

.1

.6

.9

1.0

1.1

1.3

1.5

1.8

1.8

1.9

2.9

277

2.7

1.4

.6

1.4

1.4

.6

0

0

0 

0

0

0

0

0 

0

25.7

0.86

51

Dec.

0 

<5

0

0

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0 

0

0

0.1

0.003

0.2

Jan.

0

15

0

0

0

0

0

0

0

0

3.9

7.8

8.2

8T2

8.2

8.2

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8 

3.7

1.1

0

0

0 

0

0

111.7

3.60

222

Feb.

0 

15

0

0

0

2.4

7.8

10

11

TT

11

11

11

11

11

11

11

11

11

11

11

11

11

11 

11

11

11

11

11

251.2

8.66

498

Mar.

11 

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11 

11

11

11

11

11 

11

11

341

11.0

676

Apr.

11 

TT

11

11

11

11

11

11

11

11

11

5.2

0

3.7

11

11

11

11

11

11

11

11

11

11 

11

11

11

11

11 

11

305.9

10.2

607

May

11 

11

11

11

11

11

11

22

13

7.5

22

18

19

21

47

51

49

47

46

45

44

58

55

40 

25

25

25

25

25 

25

oct.D

859.3

27.7

1,700

June

25 

2T

25

25

24

24

23

?S

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23

23 

23

23

23

23

23 

23

700

23.3

1,390

July

23

5J

23

23

23

23

22

22

22

22

19

18

18

18

18

18

18

18

18

18

18

18

18

T§

16

16

16

16 

16

16

589

19.0

1,170

Aug.

T6" 16 

16

16

16

16

16

16

16

16

16

16

16

15

T?

15

15

15

16

15

15

15

15

15 

15

15

15

15

15 

15

15

479

15.5

950

Sept.

if

!i

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14 

14

14

14

14

14 

14

422

14.1

837

Calendar year 1955: Max - Min - Mean - Ac-ft -

Water year 1955-56: Max 58 Min 0 Mean 11.2 Ac-ft 8,100

Note. No gage-height record Oct. 1 to Nov. 

Piru Reservoir was being filled.

3; discharge estimated as zero while dead storage in
SANTA CLARA RIVER BASIN 129

Piru Creek near Piru, Calif.

Location. Lat 34°25'30", long 118°45'45", in southern part of Temesoal Grant, on right 

bank 1.8 miles northeast of Piru, Ventura County, and 2 miles upstream from mouth.

Drainage area. 432 sq mi.

Records available.--October 1911 to September 1913, October 1927 to September 1956 (discontinued).Published as "at Piru" 1927-34.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage is 780 ft (from topographic map). Oct. 28, 1911, to Sept. 5, 1913, staff gage at about same site at different datum. Oct. 1, 1927, to Sept. 30, 1934, water-stage recorder at site 1.75 miles 

downstream at different datum. Oct. 1, 1934, to Sept. 30, 1940, water-stage recorder 

at site 60 ft downstream at different datum; datum lowered 2.00 ft Feb. 20, 1939.

Average discharge.--29 years (1927-56), 54.8 cfs (39,700 acre-ft per year); median of 

yearly mean discharges, 25 cfs (18,100 acre-ft per year).

Extremes. Maximum discharge during year, 103 cfs May 15 (gage height, 1.60 ft); minimum 

daily, 0.7 cfs for many days.

1911-13, 1927-56: Maximum discharge, 35,600 cfs Mar. 2, 1938, from rating curve 

extended above 750 cfs on basis of slope-area determination of peak flow; no flow at 

times during 1928-34.

Remarks. Records fair. Discharge measurements generally made two or more times a month. 

Flow regulated by Lake Piru (corrected) 2.8 miles above station, since Nov. 3, 1955 

(corrected). Doheny ditch diverts water for irrigation above station.

Cooperation. Ventura County Water Resources Division furnished 1 discharge measurement.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

1.0

1.0

1.2

1.5

2.2

2.6

3.0

?76

2.6

2.6

1.9

1.5

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.0

1.0

1.0

.7

77

1.0

1.0

1.0

1.0

1.0

1.0

43.5

1.40

86

Nov.

1.0

.7

77

.7

.7

.7

.7

.7

.7

.7

.7

1.0

3.5

TTo

1.0

1.0

1.0

1.0

1.0

1.8

1.0

1.0

1.0

1.0

1.0

1.0

.7

1.0

1.0

30.0

1.00

60

Dec.

1.0

.7

278

1.5

1.5

1.2

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.7

.7

.7

1.0

1.5

5.8

2.2

1.5

1.0

1.0

1.0

1.2

38.0

1.23

75

Jan.

1.0

.7

77

.7

.7

.7

.7

.7

.7

1.6

6.5

7.5

7.0

6.5

5.0

4.2

4.2

3.4

3.8

4.2

4.6

4.6

4.6

14

~S.5 57

3.4

3.0

3.0

3.4

165.6

5.34

328

Feb.

3.0 

2.6

2.6

2.2

?75

2.5

7.6

11

12

12

12

12

12

12

12

12

12

12

12

12

12

12

14

IS

12

12

12

12

12

288.7

9.96

573

Mar.

12 

12

13

IS

13

13

13

13

13

13

13

13

12

12

12

IS" 9.5

10

10

10

10

10

10

10

10

10

10

10

10

10

10

349.5

11.3

693

Apr.

10 

10

10

10

10

9.5

9.5

9.0

9.5

11

11

11

4.2

13~~ 3.3

13

13

13

13

13

13

13

13

13

13

14

IT

14

14

14

341.0

11.4

676

May

14 

15

16

17

17

17

16

22

21

9.0

22

23

22

23

41

43

43

43

43

43

44

56

68

5T

25

24

24

22

21

23

25

893.0

28.8

1,770

June

25 

35

25

24

23

22

22

21

21

21

21

21

20

2ff

20

20

21

21

21

21

21

21

21

21

21

21

22

22

22

22

649

21.6

1,290

July

22 

2?

22

22

22

22

22

22

22

20

19

18

18

18

17_

17

17

17

17

17

17

17

17

17

18

18

17

17

17

17

17

582

18.8

1,150

Aug.

17 

17

17

17

17

17

17

17

17

17

17

16

16

16

15

14

14

14

14

14

14

14

14

13

IT

14

14

14

14

13

14

472

15.2

936

Sept.

13 

13

13

13

13

13

13

13

13

13

12

11

13

13

13

13

14

I?

14

14

13

13

13

13

13

12

12

12

11

11

384

12.8

762

Calendar year 1955: Max 147 Mln 0.5 Mean 14.7 Ae-ft 10,650

Water year 1955-56: Max 68 Mln 0.7 Mean 11.6 Ac-ft 8,400
130 SANTA CLARA RIVER BASIN

Hopper Creek near Plru, Calif.

Location.--Lat 34°24 I 03", long 118°49'32", In NE^NEirSwi sec. 25, T. 4 N., R. 19 W., on 

downstream side of center of highway bridge, 1 mile upstream from mouth and 2.1 miles 

southwest of Plru.

Drainage area. 23.0 sq ml.

Records available.--October 1930 to September 1932, October 1933 to September 1936, October 1937 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 590 ft (from topographic map).

Average discharge.--24 years, 4.80 cfs (3,480 acre-ft per year); median of yearly mean 

discharges, 2.2 cfs (1,600 acre-ft per year).

Extremes. Maximum discharge during year, 992 cfs Jan. 26 (gage height, 4.92 ft); no flow 

during several months.

1930-32, 1933-36, 1937-56: Maximum discharge, 8,000 cfs Mar. 2, 1938; no flow for 

several months during most years.

Remarks.--Records good. Discharge measurements or observations of no flow generally made 

once a week.

Coo£eratlon."Water-stage-recorder graph, 50 discharge measurements, and 3 observations of 

no flow furnished by Ventura County Water Resources Division.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 25 to Jan. 25)

2.95

3.0

3.1

3.2

3.3

Oct. 1 to Jan. 26 

0

Jan. 26 to Sept. 30

.2

.8

2.2

4.6

3.4

3.5 

3.7 

4.0

8.3

14

30

72

2.54

2.6

2.7

2.8

2.9

3.0

.3

1.4

3.3

6.3

11

3.2 

3.4 

3.6 

3.9

4.2

4.3

27

54

96

195

350

420

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

15

0

0

0

0

0

0

0

0

0

0

0

1.5

.4

.3

.4

.3

.2

.1

1.6

T7I

.6

.5

, .4

.3

.2

.3

.3

.4

8.9

0.30

18

Dec.

0.5

.5

.4

275

1.1

1.0

.8

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

1.6

2.8

68.

6.7

5.1

1.1

.9

.9

1.2

103.1

3.33

204

Jan.

1.1

.7

77

.9

1.0

1.0

.9

.8

.7

.7

.7

.7

.7

.7

.7

.7

.7

.9

.9

.9

.9

.7

.7

.7

33

~4? 397

10

7.1

4.4

4.6

517.2

16.7

1,030

Feb.

3.3

2.6

2.6

2.4

2.4

2.2

2.1

1.9

1.6

1.6

1.6

1.2

T75

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.6

7.5

775

2.6

1.9

1.7

1.7

1.7

63.6

2.19

126

Mar.

1.4

T7?

1.2

1.2

1.2

1.1

1.1

1.0

1.0

1.0

1.0

.9

.8

.8

.6

.5

.4

.4

.4

.4

.4

.3

75

.3

.4

.5

.5

.4

.3

.3

.4

21.7

0.70

43

Apr.

0.4

.5

.2

.1

7T

.1.1

.1

.2

.3

1.0

19

T.9

4.9

2.6

1.7

1.6

1.4

1

1

.8

.8

.6

.6

.6

3.6

2.2

1.4

.9

1.0

56.7

1.89

112

May

1.0

.8

.8

.9

.9

.8

.6

.8

21~9~.8

3.3

2.4

1.4

1.0

.8

.6

.6

.6

.2

7?

.2

.3

.3

.3

.3

.3

.3

.3

.3

.4

.2

51.7

1.67

103

June

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

0

(T

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

0.03

2.0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 72 Mln 0 Mean 1.27 Ac-ft 917

Water year 1955-56: Max 397 Mln 0 Mean 2.25 Ac-ft 1,640

Peak discharge (base. 90 efs).~Dee. 25 (2:30 p.m.) 149 cfs (4.19 ft); Jan. 26 (4:30 a.m.) 992 cfs 

(4.92 ft).
SANTA CLARA RIVER BASIN 131

Sespe Creek near Wheeler Springs, Calif.

Location. Lat 34°34'40", long 119°15 I 25", in Sw£sw£ sec. 30, T. 6 N., R. 22 W., on right 

bank at Sespe Gorge, 1.6 miles upstream from Tule Creek, Smiles upstream from Cold 

Springs dam site, and 5 miles northeast of Wheeler Springs.

Drainage area. 50 sq mi, approximately. 

Records available.--July 1948 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 3,500.65 ft above mean sea level (levels 

b~y Ventura County Water Resources Division).

Average discharge.--8 years, 4.78 cfs (3,460 acre-ft per year).

Extremes.--Maximum discharge during year, 468 cfs Jan. 26 (gage height, 5.51 ft); no flow 

 Oct. 1-18, Sept. 28, 29.

1948-56: Maximum discharge, 2,260 cfs Jan. 15, 1952 (gage height, 9.52 ft), from

rating curve extended above 500 cfs on basis of slope-area determination of peak flow;

no flow for many days in 1951, 1955-56.

Remarks.--Records good except those for periods of no gage-height record, which are poor. 

Discharge measurements generally made once a week.

Cooperation. Twenty-three discharge measurements furnished by Ventura County Water 

Resources Division.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

0

0

0

0

0

aO

aO

aO

aO

aO

aO

aO

aO

aO

0

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

1.3

0.04

2.6

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.3

.1

.2

.2

.2

.2

.2

.2

.2

.3

.3

^4

.4

.4

.4

.4

.4

6.1

0.20

12

Dec.

~T4 0.4

.4

.7

.6

.9

.7

.7

.8

.8

.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.8

2.0

28

44

12

8.5

3.9

2.4

1.8

2.2

120.4

3.88

239

Jan.

1.7

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.1

TT3

1.3

1.1

1.1

1.1

20

302 -g~6

22

14

9.2

8.4

472.8

15.3

938

Feb.

5.7

4T2

3.6

a3.5

a3.5

a3

a3

a3

a2.5

a2.5

a2.5

a2.5

2.2

2.1

2.1

2.1

2.1

2.1

2.1

1.9

1.9

2.4

3.9

3.2

3.0

2.8

2.6

2.4

2.2

-

80.6

2.78

160

Mar.

2.1

.9

.8

.7

.5

.5

.7

1.8

1.8

1.9

1.9

2.1

2.1

2.2

27T

1.9

1.9

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.8

1.8

1.8

56.7

1.83

112

Apr.

1.9

2.1

1.9

1.9

1.8

1.8

1.7

T7T

1.7

1.8

7.3

12

T2

11

11

12

12

10

9.2

8.4

7.5

6.7

6.4

6.0

5.7

9.2

7.5

6.7

6.4

6.0

191.3

6.38

379

May

5.4

4.8

5.1

4.8

4.5

4.5

4.2

7T6

44

23

14

12

10

8.4

7.9

6.7

7.5

7.9

7.1

6.7

6.4

6.0

5.7

5.7

5.7

5.4

5.1

4.5

4.8

5.4

5.1

255.9

8.25

508

June

4.8

47F

4.2

3.6

3.6

3.6

3.2

3.0

2.6

2.6

2.2

2.1

1.9

1.9

2.1

1.9

1.8

1.8

1.8

1.8

1.7

1.5

1.5

1.5

1.5

1.5

1.1

.9

.9

1.1

68.2

2.27

135

July

1.3

.7

.7

.5

.4

.4

.3

1.0

1.0

.9

.9

.9

.8

.8

.7

.6

.6

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.3

73

.3

.3

24.0

0.77

48

Aug.

0.3

'.Z

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

7T

.1

.1

.1

.2

.2

.2

.1

.1

6.3

0.20

12

Sept.

0.1

!l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

.1

2.8

0.09

5.6

Calendar year 1955: Max 44 Mln 0 Mean 1.60 Ac-ft 1,160

Water year 1955-56: Max 302 Mln 0 Mean 3.51 Ao-ft 2,550

" Peak discharge (base. 50 cfs). Dec. 24 (11:30 p.m.) 117 cfs (4.17 ft); Jan. 26 (5:30 p.m.) 468 cfs 

(5.51 ft); May 9 (11:30 a.m.) 74 ofs (3.93 ft).

a No gage-height record; discharge Interpolated or estimated on basis of 1 discharge measurement 

and weather records.
132 SANTA CLARA RIVER BASIN

Sespe Creek near Fillmore, Calif.

Location. Lat 34°27'03", long 118°S5>30", in NEij-NWij-NE^ sec. 12, T. 4 N., R. 20 W., on 

right bank 0.1 mile downstream from Little Sespe Creek and 3.5 miles north of Fillmore.

Drainage area.--254 sq mi.

Records available. September 1911 to September 1913, October 1927 to September 1956. 

Prior to November 1934, published as "at Sespe."

Gage.--Water-stage recorder. Altitude of gage is 580 ft (from topographic map). Prior to 

Sept. 30, 1913, staff gage and Oct. 1, 1927, to Nov. 4, 1934, water-stage recorder, at 

sites 3 miles downstream at different datum. Nov. 5, 1934, to Mar. 2, 1938, waterstage recorder at same site at different datum (destroyed by flood; reestablished at 

present datum Feb. 2, 1939).

Average discharge. 29 years, (1927-56), 91.8 cfs (66,460 acre-ft per year); median of 

yearly mean discharges, 50 cfs (36,200 acre-ft per year). Average combined discharge, 

river and canal, 29 years (1927-56), 97.6 cfs. (70,660 acre-ft per year); median of 

combined yearly mean discharges, 55 cfs (39,800 acre-ft per year).

Extremes. Maximum discharge during year, 3,900 cfs Jan. 26 (gage height, 11.39 ft); no 

flow Aug. 24-31, Sept. 2-6, 9, 10, 16-28.

1927-56: Maximum discharge, 56,000 cfs Mar. 2, 1938, on basis of slope-area determination of peak flow; no flow except slight return seepage from Fillmore Canal at 

times during the irrigation season in most year.

Remarks.--Records good. Discharge measurements generally made twice a month. Fillmore 

Irrigation Co. diverts water 1 mile above station. For records of combined discharge 

of Sespe Creek and canal, see following page.

Cooperation.--Nine discharge measurements furnished by Ventura County Water Resources 

Division.

Revisions (water years). WSP 901: 1938-39.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 1 to Dec. 25, Jan. 25, 26)

Oct. 1 to Jan. 25 Jan. 25 to Sept. 30

5.5

5.6

5.7

5.8

5.9

6.0

0.1

.5

1.4

2.8

6.2 

6.5 

7.0 

7.5 

8.0 

9.0

15

32

80

150

255

555

5.7

5.8

5.9

6.0

6.1 

6.3 

6.6

0 7.0

7.5

8.0

9.0

10.0

11.0

140

275

470

1,050

1,990

3,280

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

l

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.2

.2

.2

.2

.2

.2

1.5

1.7

1.3

2.7

1.9

.2

1.1

2.4

1.4

1.7

1.7

.2

.2

.2

.2

.2

.2

.1

.1

.2 

.2

.3

.4

.2

.2

21.7

0.70

43

Nov.

0.2

.2

.2

.3

.2

.2

.3

.2

.3

.3

.3

.3

.3

4.3

4.8

3.8

4.0

3.8

3.6

3.4

4.9

4.6

4.2

3.8

3.6

3.6 

3.6

3.4

3.4

3.6

69.7

2.32

138

Dec.

3.8

4.0

3.8

5.9

5.2

5.0

4.6

4.0

3.8

3.8

3.6

3.4

3.4

3.4

3.4

1.4

772

3.2

3.2

3.2

3.6

3.6

6.6

18

459

240 

117

69

43

32

33

1,099.1

35.5

2,180

Jan.

27

25

21

20

17

16

16

15

15

14

13

13

13

13

12

12

12

12

12

12

12

12

11

12

270

2,910 

1,480

363

208

154

138

5,880

190

11,660

Feb.

~98 115

86

80

74

68

65

60

55

53

49

45

44

42

41

40

38

36

35

34

33

33

67

70

62

51 

47

44

42

1,607

55.4

3,190

Mar.

40

38

35

34

33

33

32

31

31

30

30

29

29

29

29

26

25

22

23

25

24

19

18

18

19

20

15

9.6

7.1

T76

8.2

769.5

24.8

1,530

Apr.

9.9

8.7

7.6

7.1

7.1

7.6

4.2

1.2

1.0

.7

25

218

178

117

93

86

86

93

92

86

83

72

64

56

50

62 

99

80

65

56

1,816.1

60.5

3,600

May

51

48

43

42

41

39

38

40

187

555

170

121

95

80

70

65

60

58

54

50

45

43

39

58

38

34 

33

32

31

26

2JL

2,066

66.6

4,100

June

22

2tf

19

16

14

14

14

12

9.9

6.6

5.6

4.0

.7

.5

.5

.5

.5

.4

.4

.4

.4

73- .3

.3

.3

.3 

.3

.3

.5

.5

164.1

5.47

525

July

0.3

.3

.3

.3

.3

.2

72

.2

.2

.2

.2

.2

.2

.2

.2

.7

1.2

2,1

5.6

576

5.6

5.5

2.8

2.0

2.0

2.0 

2.0

2.0

2.0

2.2

. 8

59.4

1.27

78

Aug.

0.

3J

1.

'.Z

.5

.5

.7

.7

.7

.5

.1

.1

.5

.2

0

0

0 

0

0

0

0

0

10.9

0.55

22

Sept.

0.2

0

0

0

0

0

.6

.6

0

0

.4

2.1

2.8

278

.8

0

0

0

0

0

0

0

0

0

0

0 

0

0

.5

1.0

11.8

0.59

25

Calendar year 1955: Max 459 Mln 0 Mean 21.8 Ac-ft 15,810

Water year 1955-56= 'Max 2,910 Mln 0 Mean 37.0 Ac-ft 26,890

Peak discharge (base, 1,500 cfs).--Jan. 26 (4 p.m.) 3,900 cfs (11.39 ft).
SANTA CLARA RIVER BASIN 133

Sespe Creek near Fillmore, Calif. Continued

Combined discharge, In oublo feet per second, of Sespe Creek and Fillmore Irrigation Co.'s canal, 

near- Fillmore, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.5

3.4

3.4

3.6

3.8

3.6

3.3

376

3.5

3.7

4.3

3.6

3.3

3.7

4.2

3.7

4.5

4.0

4.0

4.1

4.2

4.1

4.0

3.6

3.6

3.8 

3.8

3.4

3.6

3.5

3.6

116.0

3.74

230

Nov.

3.7

3.8

3.6

577

3.6

3.6

3.7

3.6

3.7

3,8

4.0

4.1

4.2

7.7

675

5.4

5.6

5.3

5.1

4.8

6.4

6.0

5.6

5.2

4.9

4.9 

4.8

4.6

4.6

4.8

141.3

4.71

280

Dec.

5.0

5.2

4.9

7.0

6.3

6.1

5.6

5.0

4.8

4.7

4.6

4.3

4.4

4.3

5.0

5.0

4.8

5.2

5.3

5.2

5.4

5.3

9.0

20

461

242

118

70

44

33

34

1,144.4

36.9

2,270

Jan.

28

26

22

21

19

18

18

17

17

16

15

15

15

15

14_

14

14

14

14

14

14

14

14

14

271

2,910 

1,480

363

208

155

140

5,929

191

11,760

Feb.

~99 116

87

81

75

69

66

62

57

55

51

47

46

44

42

41

40

38

36

36

34

34

68

72

64

52 

48

44

42

1,646

56.8

3,260

Mar.

41

39

36

35

34

34

33

32

32

31

31

30

30

30

30

29

28

27

26

27

26

24

24

23

23

24 

21

21

20

20

20

881

28.4

1,750

Apr.

22

21

20

19

18

19

17

15

IS

16

39

T78" 221

117

94

88

88

95

94

88

85

73

66

58

52

64 

101

82

67

58

1,990

66.3

3,950

May

53

50

45

44

43

42

40

43

189

556

171

122

96

81

72

65

62

60

56

52

47

45

42

42

42

38 

38

37

36

33

33

2,155

69.5

4,270

June

33

3T

30

29

28

28

27

26

23

20

20

18

16

14

14

14

14

14

13

13

13

12

12

11

11

10 

10

9.3

8.8

8.3

530.4

17.7

1,050

July

8.1

8.2

8.4

8.5

875

8.2

7.6

7.2

6.6

6.2

6.1

6.0

6.0

5.6

5.4

5.2

5.1

4.9

4.9

4.7

4.6

3.8

4T5

4.4

4.4

4.4 

4.3

4.2

4.1

4.0

4.1

178.2

5.75

353

Aug.

4.2

4.4

474

4.3

4.1

3.9

3.9

3.8

3.7

3.6

3.7

3.8

3.6

3.5

3.5

3.6

3.8

3.8

3.8

3.8

3.6

3.5

3.3

3.2

3.3

3.4 

3.7

3.9

4.0

4.0

4.1

117.2

3.78

232

Sept.

4.0

377

3.6

3.4

3.4

3.4

3.2

3.1

3.0

3.0

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.2

3.1

3.3

3.3

3.2

3.1

3.1

3.1

3.1 

3.0

3.0

2.9

2.9

95.8

3.19

190

Calendar year 1955: Max 461 Mln 2.6 Mean 25.4 Ac-ft 18,400

Water year 1955-56: Max 2,910 Mln 2.9 Mean 40.8 Ao-ft 29,600

493801 O - 59 - 10
SANTA CLARA RIVER BASIN

Santa Paula Creek near Santa Paula, Calif.

Location. --La t 34°23'44", long 119°04'32", in NW^-SW^SW^ sec. 27, T. 4 N., R. 21 W., on 

right bank 15 ft upstream from Santa Paula Water Works diversion dam, 150 ft upstream 

from Mud Creek, and 3 miles north of Santa Paula.

Drainage area. --39. 8 sq mi.

Records available. --October 1927 to September 1956. March 1912 to September 1913 at site 

2.5 miles upstream; records not equivalent.

Gage . - -Water-s tage recorder. Altitude of gage is 650 ft (from topographic map). Oct. 1, 

T927, to Feb. 19, 1931, at site 500 ft downstream at different datum.

Average discharge . 29 years (1927-56), 18,4 cfs (13,320 acre-ft per year); median of 

yearly mean discharges, 9.6 cfs (6,950 acre-ft per year).

Extremes. --Maximum discharge during year, 835 cfs Jan. 26 (gage height, 3.87 ft); minimum daily, 0.3 cfs Aug. 23, 24, Sept. 14.

1927-56: Maximum discharge, 13,500 cfs Mar. 2, 1938 (gage height, 10.56 ft), from 

rating curve extended above 2,100 cfs on basis of slope-area determination of peak flow; 

no flow at times during 1949, 1951-52.

Remarks. Records fair. Discharge measurements generally made twice a month. Santa Paula 

Water Works diverted 72 acre-ft above station for irrigation.

Cooperation. --Four discharge measurements furnished by the Ventura County Water Resources

Division.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

26

29

30

31

Total

Mean

Ac- ft

Oct.

0.6

.7

.7

.7

.9

.7

.4

.9

1.3

1.1

1.0

1.2

1.2

1.3

1.4

1.5

1.5

1.5

1 .6

1.5

1.5

1.5

1.2

1.1

1.3

1.5

1.5

1.2

1.1

1.1

1.3

36.0

1.16

71

Nov.

1.4

1.3

1.3

1.3

1.2

1.2

1.2

1.1

1.3

1.0

^J,

.8

1.2

LJ.

1.8

1.5

1.8

1.5

1.5

1.5

2.1

1.9

1.8

1.6

1.6

1.8

1.6

1.5

1.8

1.8

44.9

1.50

89

Dec.

1.9

1.9

2.1

2.6

2.1

2.2

2.2

1.9

1.8

1.8

1.6

1.5

1.6

1.6

1.9

1.9

2.1

2.1

2.2

2.2

2.2

2.2

3.1

3.5

6.7

9.3

9.3

7.8

7.1

6.6

6.5

103.5

3.34

205

Jan.

5.8

5.8

5.0

4.7

4.7

4.4

4.4

4.2

3.7

3.7

3.7

3.5

3.3

3.3

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.3

3.3

3.3

19

495

181

52

26

18

15

897.8

29.0

1,780

Feb.

12

9.3

8.5

7.8

7.5

7.5

8.1

9.3

9.3

8.9

8.5

8.2

8.2

7.8

7.5

7.5

7.1

6.8

6.5

6-2

6.5

6.8

8.9

12

10

9.3

8.9

8.5

8.2

241.6

8.33

479

Mar.

8.2

8^5

8.2

7.8

7.5

7.5

7.5

8.2

8.5

8.2

7.8

7.8

7.5

6.8

6.2

6.2

5.8

5.8

5.8

5.6

5.3

5.3

5.3

4.7

4.7

4.7

4.4

4.2

4.0

4.0

4.4

196.4

6.34

390

Apr.

4.7

4.4

4.0

3.7

3.7

3.7

3.5

T77

4.0

9.3

21

10

8.5

12

15

14

14

15

15

13

10

10

9.6

8.5

13

15

13

12

12

288.4

9.61

572

May

12

12

12

14

15

16

18

20

62

55

39

30

24

19

15

13

12

10

9.6

8.9

8.9

8.9

8.9

8.9

9.3

8.9

8.9

8.5

8.5

8.5

1*1

512.5

16.5

1,020

June

7.5

7.1

6.8

6.8

6.5

6.2

6.2

5.8

5.8

5.6

5.3

5.0

4.7

4.7

5.3

5.0

5.0

5.0

4.7

4.7

4.2

4.0

3.7

3.5

4.0

3.5

2*1

2.9

3.1

3.3

148.6

4.95

295

July

3.5

4.0

4.0

3.1

3.3

2.9

2.7

2.7

2.7

2.2

2.9

3.3

3.3

3.1

3.1

2.9

2.9

2.9

2.7

2.7

2.6

2.6

2.6

2.6

2.6

2.4

2.4

2.2 '2.2

2.1

2.2

87.4

2.82

173

Aug.

2*1

2.6

2.2

2. "2

2.1

1.9

1.9

1.9

1.9

1.9

2.1

2.2

2.1

1.9

1.3

1.3

1.4

1.6

1.5

1.3

1.3

1.1

75

.4

.7

.8

1.1

1.4

2.4

2.2

50.0

1.61

99

Sept.

2.2

2.2

2.1

1.8

1.8

1.8

1.8

1.8

1.5

.8

.4

.6

.5

.3

. .4

1.4

1.8

1.6

1.6

1.8

2.1

1.9

2.1

1.6

1.5

1.3

1.0

1.1

1.1

1.4

43.3

1.44

86

Calendar year 1955: Max 3O Min 0.3 Mean 4.04 Ac-ft 2,920

Water year 1955-56 : Max 495 Min 0.3 Mean 7.24 Ac-ft 5,260

Peak discharge (base. 200 cfs). Jan. 26 (4 p.m.) 835 cfs (3.87 ft).
VENTURA RIVER BASIN 135

Matilija Creek above reservoir, near Matilija Hot Springs, Calif.

Location. Lat 34°29 I 41", long 119°19i48", in SW^SEi-SWi- sec. 19, T. 5 N., R. 23 W., on 

left bank 1.6 miles upstream from Matilija Dam and 1.7 miles northwest of Matilija Hot 

Springs .

Drainage area. 51 sq mi, approximately.

Records available . May 1948 to September 1956. Published as "near Matilija" prior to 

October 1953.

Gage . Water-stage recorder. Datum of gage is 1,160.20 ft above mean sea level (levels 

oy Ventura County Water Resources Division).

Average discharge. --8 years, 13.3 ofs (9,630 acre-ft per year).

Extremes . Maximum discharge during year, 1,040 cfs Jan. 26 (gage height, 6.30 ft); minimum daily, 0.6 ofs Oct. 12-14.

1948-56: Maximum discharge, 8,800 cfs Jan. 15, 1952 (gage height, 12.1 ft), from 

rating curve extended above 600 cfs on basis of slope-area determination of peak flow; 

minimum daily, 0.3 cfs Oct. 17-20, 25, 27, 1951.

Remarks . Records good. Discharge measurements generally made once a week.

Cooperation. Sixty-nine discharge measurements furnished by Ventura County Water 

Resources Division.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1 to Nov. 2, Jan. 27)

Oct. 1 to Nov. 2 Nov. 2 to Sept. 30

2.4

2.5

0.6 

1.6

2.1

2.8

2.9

3.0

3.1

3.2

3.3

0.8

1.7

3.0

5.0

7.6

11

15

3.6 

4.0 

4.5 

5.0 

5.5 

6.0

35

79

165

315

530

820

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

El

22

23

24

25

26

27

26

29

30

31

Total

Mean

AC- ft

Oct.

0.8

.8

.8

1.0

1.2

.9

.7

.7

.8

.8

.8

76- .6

.6

.8

1.0

1.0

1.2

1.2

1.2

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

1.0

2B.2

0.91

56

Nov.

1.0

.9 *a. .8

.9

.9

.8

.8

.8

.8

.8

.9

1.1

1.7

T72

1.2

1.3

1.2

1.1

1.1

1.4

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.2

1.2

32.1

1.07

64

Dec.

T7S" 1.3

1.4

2.2

1.9

1.7

,1.7

1.7

1.7

1.7

1.7

1.7

1.9

2.0

2.0

1.8

1.9

1.9

1.8

1.8

1.7

1.7

2.0

4.7

93

37

25

17

14

IE

14

257.4

8.30

511

Jan.

12

11

10

9.4

9.1

8.5

7.9

7.9

7.9

7.9

.6

.6

.6

.3

.3

.3

.9

.6

.3

6.7

6.4

6.4

6.1

49~5.8

637

514

100

65

47

41

1,343.5

43.3

2,660

Feb.

36

33

30

29

29

27

26

25

25

23

21

19

17

17

18

19

19

18

17

17

16

16

20

18

16

14

14

13

14

606

20.9

1,200

Mar.

14

14

13

14

14

13

13

12

12

.12

12

12

12

12

12

12

11

10

9,7

9.4

9.1

9.1

8.8

8.8

8.8

8.2

7.9

7.6

TTQ- 7.0

7.0

332.4

10.7

659

Apr.

7.9

7.9

7.6

7.6

7.3

6.7

6.4

177

7.0

7.0

24

34

2?

18

17

17

16

15

14

12

12

12

12

12

13

18

14

13

12

12

391.1

13.0

776

May

12

11

TT

12

11

11

11

14

53

IT

29

26

24

22

20

19

21

20

19

18

17

16

14

14

14

14

13

13

13

12

12

557

18.0

1,100

June

11

TT

10

10

10

10

10

9.7

9.1

9.1

8.8

8.5

8.2

.6

.9

.6

.6

.6

.6

.6

.3

.3

.0

6.7

6.7

6.1

5.6

5.2

5.0

572

241.0

8.03

478

July

5.2

5.6

5.8

574

5.2

4.6

4.2

4.0

3.8

3.6

3.6

3.8

3.8

3.6

3.6

3.6

3.4

3.0

3.2

3.2

3.0

2.9

2.9

3.0

3.0

2.9

2.7

2.7

2.6

276

2.6

113.1

3.65

224

Aug.

2.7

577

2.7

2.7

2.4

2.3

2.3

2.2

2.0

2.0

1.9

2.0

2.0

2.0

1.9

1.9

1.9

2.0

2.2

2.0

2.0

1.9

1.8

T78

1.9

2.0

2.0

2.0

1.9

1.9

1.9

64.9

2.09

129

Sept.

1.8

TTe

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.5

1.5

1.6

1.5

1.4

1.3

1.3

1.3

1.3

1.4

1.3

1.4

1.5

1.3

1.3

T72- 1.2

1.3

1.3

1.3

44.1

1.47

87

Calendar year 1955: Max 93 Min 0.6 Mean 5.37 Ac-ft 3,890

Water year 1955-56: Max 637 Min 0.6 Mean 11.0 Ac-ft 7,940

Peak discharge (base. 100 cfs). Dec. 25 (12:30 p.m.) 135 cfs (4.39 ft)j Jan. 26 (5 p.m.) 1,040 cfs 

(6.30 ft).
136 VENTURA RIVER BASIN

Matilija Reservoir at Matilija Hot Springs, Calif.

Location. Lat 34°29'02", long 119°18'28", in SWi;NW£SEi sec. 29, T. 5 N., R. 23 W., on up-

 stream face near right end of Matilija Dam on Matilija Creek, 0.2 mile west of Matilija 

Hot Springs.

Drainage area.--54.6 sq mi.

Records available.--March 1948 to September 1956. Prior to October 1953, published as "at 

Matilija."

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Ventura County 

Tfater Resources Division. Prior to Oct. 1, 1954, at datum 1,000 ft higher.

Extremes.--Maximum contents during year, 7,022 acre-ft Apr. 11, May 9 (elevation, 1,125.03

 fTTTminimum, 4,045 acre-ft (elevation, 1,097.13 ft) Nov. 13, 30, Dec. 1-4.

1948-56: Maximum contents, 7,360 acre-ft Jan. 15, 1952 (elevation, 1,127.76 ft); 

minimum, 54 acre-ft (sluice gate open) July 27, 1951, to Jan. 11, 1952.

Remarks. Reservoir is formed by concrete dam. Storage began Mar. 14, 1948. Capacity and 

area ratings for reservoir are based on surveys made in 1948. Dead storage below 

sluice gate (elevation, 1,000.0 ft), 54 acre-ft included in contents. Capacity below 

outlet gate (elevation, 1,025.0 ft), 250 acre-ft; below spillway level (elevation, 

1,125.0 ft), 7,020 acre-ft. Water released from reservoir passes down natural channel 

of Matilija Creek or is diverted through pipeline to Ventura River basin and Ojai 

Valley for irrigation.

Cooperation.--Gage-height record furnished by Ventura County Water Resources Division.

Month-end elevation and contents, water year October 1955 to September 1956

Date

Dec. 31.....................

Sept. 30.... .................

Water year 1955-56. .......

Elevation 

(feet)t

1 097 13

1,102.59

1 119 99

1,112.38

-

Contents 

(acre-feet)

4,547

5,541

-

Change in contents 

(acre-feet)

+502

A"\ a

-441

, +974

t Elevation at 12 p.m.
VENTURA RIVER BASIN 137

Matilija Creek at Matilija Hot Springs, Calif.

Location. Lat 34°28'58", long 119°18'03", in SW^NWiSWij- sec. 28, T. 5 N., R. 23 W., on 

right bank 0.2 mile east of Matilija Hot Springs and 0.2 mile upstream from North 

Fork.

Drainage area.--55 sq mi, approximately.

Records available.--October 1927 to September 1956. Prior to October 1953, published as 

"at Matilija."

Gage.--Water-stage recorder. Altitude of gage is 900 ft, revised (from topographic

map). Prior to Feb. 11 (revised), 1939, at site 0.6 mile upstream at different datum.

Extremes. Maximum discharge during year, 70 cfs May 9 (gage height, 2.97 ft); minimum 

daily, 0.5 cfs Oct. 27.

1927-56: Maximum discharge, 15,900 cfs Mar. 2, 1938, on basis of slope-area determination of peak flow; minimum daily, 0.1 cfs for several days during most years of 

regulated flow.

Remarks.--Records good. Discharge measurements generally made twice a month. Flow regulated by Matilija Reservoir 0.4 mile above station since Mar. 14, 1948 (see preceding 

page); water diverted at dam to Venture River basin and OJai Valley for irrigation 

since May 1951.

Cooperation, Two discharge measurements and records of diversion were furnished by 

Ventura County Water Resources Division.

Revisions (water years).--WSP 931: 1939-40. WSP 1285: 1951-52.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2*5

2.3

2.5

2.5

2.3

2.3

2.3

2.3 

2.3

2.5

2.5

2.2

2.2

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

1.9

.8

.5

1.4

1.4

1.4

1.4

64.8

2.09

129

Nov.

1.4

1.7

1.4

1.1

1.2

1.2

1.1

1*0 

1.0 1.1

1.2

1.3

1.5

1.8

1.6

1.7

1.8

1.7

1.7

1.7

2.0

1.7

1.6

1.6

1.6

1.6

1.5

1.4

1.4

1.4

 

44.0

1.47

87

Dec.

1.5

1*1

1.4

1.7

1.6

1.6

1.6

1.6 

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.8

2.5

3*4

2.5

1.5

1.5

1.4

1.4

1.8

52.0

1.68

103

Jan.

1.5

1.4

1.4

1.4

1.3

1.3

1.1

fc*

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

3.0

|T§

2.2

1.6

1.3

1.1

44.5

1.44

88

Feb.

29

29

26

24

25

18

18

17 

16

14

14

13

13

12

12

12

10

11

10

10

9.5

9.8

18

13

10

11

8.9

975

9.2

 

 

431.9

14.9

857

Mar.

9.4

9.2

6.6

6.5

8.4

9.1

4.5

6.4 

5.6

5.9

8.1

4.3

6.8

9.2

6.4

6.4

7.6

8.2

12

2.5

2.0

1.8

3.4

3.0

4.3

8.9

4.9

1.4

1.1

1*0.

1.2

176.1

5.68

349

Apr.

1.8

2.5

1*1

1.3

1.1

1.4

1.5

1.5 

1.7

1.8

16

44

20

15

13

13

14

16

13

9.5

8.1

6.4

5.7

6.2

6.5

16

9.2

7.6

6.5

6.5

 

267.9

8.93

531

May

6.5

6.2

5.9

5.7

5.9

5.7

5*2

9.1 

50

34

26

23

16

16

14

13

13

12

11

10

10

9.8

9.8

9.8

10

10

9.8

9.2

8.2

7.9

7.0

389.7

12.6

773

June

6.2

5.7

5.2

4.7

4.1

3.9

4.9

6.2 

6.8

1*0

5.9

4.7

4.9

4.6

3.7

3.7

5.5

4.1

4.9

4.9

4.9

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

146.8

4.89

291

July

4.7

477

4.7

4.5

4.5

4.5

4.3

4.5 

4.5

4.5

4.5

4.5

4.7

4.5

4.5

4.7

4.5

4.5

4.5

3.7

3.2

3.2

3.2

3.2

5.0

3.0

5.0

3.0

3.0

3.0

3.0

123.8

3.99

246

Aug.

2.9

3.0

2.9

2.9

2.9

3.0

5.2

3.0 

2.9

3.0

3.2

3.2

3.0

3.2

3.0

3.2

3.2

3.2

3.0

3.0

2.9

2.9

2.7

2.6

2.6

2.7

2.7

2.7

2.7

2.7

2.9

91.0

2.94

180

Sept.

2.9

2*1

277

2.9

2.9

2.9

2.9

2.9 

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.0

5.2

3.0

3.2

3.2

3.2

3.0

3.0

3.0

3.0

3.0

3.0

88. S

2.95

176

Adjusted for diversion to Ventura River basin and OJal Valley

218 129 1,130 593 782 [ 1,060 | 579

Cal 

Wat

;ndar year 1955: 

;r year 1955-56:

Max 

Max

7.3 

50

Min 

Min

0. 

0.

Ob

5 

5

served

Mean 

Mean

3.50 

5.25

Ac-ft 

Ac-ft

2,540 

3,810

Adjusted

Ac-ft 4,740 

Ac-ft 6,600
138 VENTURA RIVER BASIN

North Pork Matlllja Creek at Matlllja Hot Springs, Calif.

Location (revised). Lat 34°29'33", long 119°18'20", In NEiNW^NE^ sec. 29, T. 5 N., R. 23W., 

 on right bank at highway bridge, 0.7 mile north of Matlllja Hot Springs and 0.8 mile upstream from mouth.

Drainage area. 15.5 sq ml.

Records available. --October 1928 to September 1932, October 1933 to September 1956. Prior 

to October 1953, published as "at Matlllja."

Gage. Water-stage recorder. Datum of gage Is 1,142. 02 ft above mean sea level (levels 

by Ventura County Water Resources Division),

Average discharge. 27 years, 8.49 cfs (6,150 acre-ft per year); median of yearly mean 

discharges, 4.1 cfs (3,000 acre-ft per year).

Extremes. Maximum discharge during year, 340 cfs Jan. 26 (gage height, 2.80 ft); mlnlmum aally, 0.3 cfs Sept. 9-11. ^

1928-32, 1933-56: Maximum discharge, 5,580 cfs Mar. 2, 1938; minimum, 0.1 cfs for 

several days during 1929, 1931, 1951.

Cooperation . Records furnished by Ventura County Water Resources Division.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.5

ti"

.5

.5

.5

.5

.5

.5

 6

.6

.5

.5

.5

.5

.5

.5

.5

.6

.5

.5

.5

.5

.4

.5

.6

.6

.5

.5

.5

.5

15.7

0.51

31

Nov.

0.5'.e

.6

.6

.6

.5

.5

.5

.5

.5

.6

.7

1.4

.9

.9

1.0

.9

.9

.9

1 7

TrT 1.1

1.0

.8

.8

.9

.9

1.1

1.2

24.7

0.82

49

Dec.

1.3 

1.0

1.0

1.8

1.1

1.1

1.1

.9

 4TH

.8

.9

.9

1.0

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.2

1.7

9.5

!£

9.2

6.6

4.1

3.1

3.0

3.9

111.0

3.56

220

Jan.

3.0 

2.8

2.4

2.4

2.4

2.3

2.3

2.3

2.3

2.1

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.8

1.8

1.8

1.8

1.8

1.8

1.7

15

245

68

24

15

12

10

439.8

14.2

872

Feb.

w7.8

7.0

6.7

6.4

6.4

6.0

5.7

5.1

5.1

4.8

4.8

4.8

4.6

4.3

4.3

4.3

4.0

4.0

3.8

3.8

5.7

5.1

4.3

4.0

3.8

3.6

"

151.2

5.21

300

Mar.

3.6 

3.6

3.3

3.3

3.3

3.6

3.6

3.6

3.3

3.0

2.6

2.8

2.8

2.8

2.8

2.4

2.4

2.4

2.4

2.4

2.4

2.4

T7s>

2.4

2.4

2.4

2.4

2.2

2.2

2.2

85.6

2.76

170

Apr.

2.2 

2.2

£ 1

2.2

2.1

2.1

2.1

2.1

2.1

2.4

10

11

7.8

5.4

4.3

3.8

3.8

3.3

3.0

3.0

3.0

3.0

3.0

3.0

3.6

6.5

5.4

3.6

3.6

3.6

122.3

4.08

243

May

3.3 

3.0

3.0

3.0

2.8

2.8

3.9

18

13

9.3

7.4

5.7

5.4

4.8

4.6

4.6

4.3

4.3

3.8

3.8

3.8

3.6

3.8

3.8

3.8

3.6

3.6

3.3

3.3

186.4

6.01

June

2.8

2.4

2.4

2.4

2.4

2.2

2.2

2.4

2.4

2.2

2.1

2.1

2.1

2.1

2.1

2.1

2.4

2.4

2.2

2.2

2.1

1.8

1.8

1.8

iuS

176

1.6

1.6

1.6

64.1

2.14

3701 127

July

1.6

1.4

1.4

1.4

1.2

1.1

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.1

.9

.9

.6

.8

.7

.7

.7

.7

.8

.7

.6

t g

.5

.5

.5

.6

29.9

0.96

59

Aug.

0.6 

.6

.1!

.5

.5

.5

.5

.5

.6

.6

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.6

.6

.5

.5

.5

.6

.7

.7

.9

1.0

18.0

0.58

36

Sept.

^79

.'9

.7

.6

.5

.5

.4

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4'.4

.5

14.0

0.47

28

Calendar year 1955: Max 46 Mln 0.2 Mean 2.00 Ac-ft 1,450

Water year 1955-56: Max 245 Mln 0.3 Mean 3.45 Ac-ft 2,500

, Peak discharge (base. 40 ofa 1. Dec. 25 (10 a.m.) 72 ofa (1.84 ft); Jan. 26 (4 p.m.) 340 cfa 

(2.80 ft); May 9 (1:30 p.m.) 96 cfa (1.75 ft).
VENTURA RIVER BASIN 139

San Antonio Creek at Casitas Springs, Calif.

Location. Lat 34°22 I 49", long 119°18'13", in Santa Ana Grant, on downstream side of bridge 

orTTTTS. Highway 399, 0.2 mile upstream from mouth and 0.9 mile north of Casitas Springs, 

Ventura County.

Records available. October 1949 to September 1956.

Page. Water-stage recorder. Datum of gage is 307.55 ft above mean sea level (levels by 

Ventura County Water Resources Division).

Average discharge. 7 years, 3.37 cfs (2,440 acre-ft per year).

Extremes.--Maximum discharge during year, 690 cfs Jan. 26 (gage height, 6.86 ft); no flow 

during several months.

1949-56; Maximum discharge, 3,800 cfs Jan. 15, 1952; no flow during several months 

of each year.

Remarks.--Records good. Discharge measurements generally made once a week.

Cooperation.--Gage-height record, 25 discharge measurements and 3 observations of no flow 

furnished by Ventura County Water Resources Division.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0

0

0

Noy.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

£5

357

62

13

6.4

4.9 

4.1

472.4

15.2

937

Feb.

i.0

2.7

2.5

2.3

2.2

2.0

1.8

1.9

2.0

2.0

2.0

2.0

2.0

2.0

1.7

1.4

1.3

1.3

1.1

1.1

1.1

1.2

1.7

1.4

1.3

1.2

1.1

1.1

JUO

49.4

1.70

98

Mar.

0.9

.9

.9

.9

.9

.9

.9

.9

1.1

1^2

1.0

.9

.9

.8

.7

.7

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

^5

.3

.5

.4 

.4

21.9

0.71

43

Apr.

0.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.9

i/L

.9

.6

.6

.7

.7

.6

.5

a. 4

a. 4

a. 4

a. 4

a. 4

a. 4

a.

a.

15.7

0.52

31

May

0.4

.3

.3

.3

.3

.2

.2

.5

£.0

1.6

1.0

.8

.7

.6

.6

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

19.6

0.63

39

June

0,2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.3

0.08

4.6

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 19 Mln o Mean 0.24 Ao-ft 176

Water year 1955-56: Max 357 Mln o Mean 1.59 Ac-ft 1,150

a No gage-height reoordj discharge Interpolated.
140 VENTORA RIVER BASIN

Coyote Creek near Ventura, Calif.

Location.--Lat 34°21'26", long 119°18'46", near southeast corner of Santa Ana Grant on 

right bank 200 ft downstream from county highway bridge, 0.3 mile upstream from mouth, 

and 5.5 miles northwest of Ventura, Ventura County.

Drainage area.--41.1 sq mi.

Records available.--October 1927 to September 1932, October 1933 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 230 ft (from topographic map). Prior 

to Mar. 22, 1934, chain gage at site 200 ft upstream at different datum. Mar. 22 1934 

to Aug. 20, 1952, water-stage recorder at present site at datum 1.16 ft higher Aug 21 

1952, to June 1, 1954, auxiliary staff gage 200 ft upstream at datum 1.16 ft higher 

read once daily.

Average discharge . 28 years, 12.4 cfs (8,980 acre-ft per year); median of yearly mean 

discharges, 4T9 cfs (3,500 acre-ft per year).

Extremes.--Maximum discharge during year, 2,650 cfs Jan. 26 (gage height 6 35 ft)- 

minimum daily, 0.1 cfs for many days.

1927-'52, 1933-56: Maximum discharge, 11,500 cfs Mar. 2, 1938, on basis of slopearea determination of peak flow; no flow at times in some years.

Remarks.--Records good. Discharge measurements generally made twice a month. Small diversion above station for irrigation.

Cooperation. Two discharge measurements furnished by Ventura County Water Resources 

Division.

Discharge, In cubic feet per second, water year October 1855 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Nov.

0*1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

4.0

0.13

7.9

Dec.

0*1 ~^I

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

6.6

6.7

4.8

1.6

1.2

1.0

1.1

27.8

0.90

55

Jan.

0.9

.9

.9

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

150

1.750

333

78

46

37

34

2,448.9

79.0

4,860

Feb.

24

20

17

14

13

12

10

9.2

7.9

7.3

6.4

6.4

5.9

5.6

5.4

5.*

5.0

4.7

4.5

4.3

3^1

4.1

6.4

7.3

5.6

4.7

4.3

4.1

3.9

E32.3

8.01

461

Mar.

3.9

3.7

3.7

3.7

3.4

3.2

3.2

3.1

3.1

2.9

2.6

2.5

2.4

2.2

2.1

2.1

2.0

2.0

2.0

2.0

1.9 i!g

1.9

1.9

1.9

2.0

2.0

1.9

1.9

1.9

2.0

77.0

2.48

153

Apr.

2.0.'l

2.1

2.1

2.1

2.1

2.1

2.1

2.2

2.4

3.6

17

7.8

a4

a4

a4

a4

a4

3.6

3.4

3.2

3.1

2.9

2.9

2.6

3.6

3.6

3.2

3.1

2.8

107.7

3.59

214

May

2.8

2.6

2.6

2.6

^5

2.5

2.5

3.1

11

18

9.8

7.6

5.9

4.7

3.9

3.4

3.1

2.9

2.6

2.5

2.6

2.6

2.6

2.9

2.9

3.1

3.1

3.1

2.8

2.6

2.5

137.4

4.43

273

June

2.4

2.4

2.2

2.1

2.0

2.0

1.9

1.8

1.7

1.3

1.4

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.0

.9

.8

.8

.8

.8

.8

.8

IT

38.5

1.28

76

July

0*2

.7

.7

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.5

.3

.3

.3

.3

.5

.7

.6

.5

.5

.5

16.1

0.52

32

Aug.

0.5

.5

.5

if

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.2

.2

.2

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

13.2

0.43

26

Sept.

3.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

,3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

8.7

0.29

17

Calendar year 1955 : Max 32 Mln 0.1 Mean 1.08 Ac-ft 778

Water year 1955-56 : Max 1,750 Mln 0.1 Mean 8.51 Ac-ft 6,180

Peak discharge fbase. 450 cfs). Jan. 26 (5:3o a.m.) 2,650 cfs (6.35 ft).

a No gage-height record; discharge interpolated or estimated on basis of recorded range in stage.
VENTURA RIVER BASIN 141

Ventura River near Ventura, Calif.

Location. Lat 34°21'05", long 119°18'23", in southeast corner of Santa Ana Grant, on right 

bank 500 ft downstream from county highway bridge at Foster Memorial Park, 0.2 mile 

downstream from Coyote Creek, and 5 miles north of Ventura, Ventura County.

Drainage area. 187 sq mi.

Records available. September 1911 to January 1914, October 1929 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 200 ft (from topographic map). Prior to 

Jan. 18, 1914, chain gage at site 370 ft upstream at different datum (destroyed by 

flood). October 1929 to Nov. 2, 1949, at site 370 ft upstream at present datum.

Average discharge. 29 years (1911-13, 1929-56), 59.8 cfs (43,290 acre-ft per year); 

median of yearly mean discharges, 28 cfs (20.300 acre-ft per year). Average combined 

discharge of river and diversion, 23 years (1933-56), 73.8 cfs (53,430 acre-ft per 

year); median of combined yearly mean discharges, 34 cfs (24,600 acre-ft per year).

Extremes. Maximum discharge during year, 4,050 cfs Jan. 26 (gage height, 9.95 ft); no 

flow Nov. 6-13, Nov. 28 to Dec. 3, Dec. 7-24, Jan. 4-11, 13-21.

1911-13, 1929-56: Maximum discharge, 39,200 cfs Mar. 2, 1938 (gage height, 19.2ft), 

from rating curve extended above 7,700 cfs on basis of slope-area and contracted-opening 

determinations of peak flow; no flow at times during many years.

Remarks.--Records good. Discharge measurements generally made twice a month. City of 

Ventura diverts water above station for municipal supply. For records of combined discharge of river and diversion, see following page.

Cooperation. Two discharge measurements furnished by Ventura County Water Resources 

Division. Gage-height record for diversion weir furnished by city of Ventura.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.3

.3

.3

.4

.4

.4

.5

.6

.6

.5

.5

.5

.5

.5

.4

.4

.3

72" .2

12.0

0.39

24

Nov.

0 2

1

1

1

1

0

0

0

0

0

0

0

0

.2

.1

.1

.2

.3

.3

.3

.4

74

.4

.2

.2

.1

.1

0

0

0

3.9

0.13

7.7

Dec.

0Q0

.2

.2

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

7.6

~6.7 12

1.4

.6

.4

.5

29.7

0.96

59

Jan.

0.3

.2

.2

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

.1

.2

.2

157

2,710

474

93

55

46

42

3,578.3

115

7,100

Feb.

39

36

29

25

24

20

17

16

14

14

12

12

12

12

12

12

11

12

11

10

10

12

17

16

12

12

12

12

11

464

16.0

920

Mar.

11

11

10

10

9.7

9.7

9.3

8.1

7.4

7.0

6.7

6.7

6.0

6.0

5.4

5.4

5.4

5.4

5.4

5.8

6.0 6.'0

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.7

6.7

221.6

7.15

440

Apr.

6.7

6.7

6.4

5.2

4.4

3.2

2.9 375-

4.6

4.6

6.0

Te- 23

ii

9.3

7.8

6.7

6.7

6.4

6.0

6.0

5.4

5.2

5.8

6.0

7.0

7.0

6.7

6.4

6.0

208.6

6.95

414

May

6.0

5.8

5.4

5.4

5.2

5.2

5.2

5.5

51

61

29

22

16

10

7.4

7.4

7.4

7.4

7.4

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

6.7

6.7

6.7

352.8

11.4

700

June

6.7

6.7

7.0

770

6.7

6.4

6.0

5.8

5.2

4.9

4.4

3.9

3.7

3.5

3.5

3.5

3.5

3.5

3.5

2.9

1.7

1.6

1.5

1.6

1.6

1.5

1.4

1.7

1.5

1.4

113.8

3.79

226

July

.6

.6

.6

.7

.9

.9

.4

.8

.6

.6

.6

.5

.5

.5

.6

1.2

1.2

.6

.9

.9

.9

.7

.7

.6

.6

.9

1.2

.8

.8

.8

.9

30.1

0.97

60

Aug.

0.8

.9

.9

1.0

1.0

1^3.

1.2

.8

.7

.6

.5

.5

.5

.4

.4

.4

.3

.3

.3

.3

.2

.2

.2

.1

.1

.2

.5

.4

.4.4'

.4

16.2

0.52

32

Sept.

0.4

.4

.4

.4

.4

.5

.5

.5

.4

.4

.3

.3

.2

.2

.2

.2

.2

.2

.4

.4

.5

.6

75

.4

.3

.2

.2

.1

.1

.1

9.9

0.33

20

Calendar year 1955: Max 46 Mln 0 Mean 1.24 Ac-ft 899

Water year 1955-56: Max 2,710 Mln 0 Mean 13.8 Ac-ft 10,000

Peak discharge (base. 500 efs).--Jan. 26 (5 p.m.) 4,050 cfs (9.95 ft).
142 VENTURA RIVER BASIN

Ventura River near Ventura, Calif. Continue

Combined discharge, in cubic feet per second, of Ventura River and diversion 

near Ventura, Calif., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

5.3

5.2

5.2

5.5

BT4

5.5

5.5

5.5

5.5

5.4

5.3

5.2

5.1

5.1

5.0

5.0

4.9

4.9

4.9

4.8

4.8

4.6

5.3

5.3

5.1

4.9

4.7

4.6

4.3

4. 2

4.1

156.1

5.04

310

Nov.

4.2

4.1

4.0

4.0

4.0

3.9

3.5

3.2

3.0

3.0

3.9

4.7

4.7

4.6

476

4.5

3.7

4.7

4.6

4.0

3.8

4.7

4.5

2.2

2.1

2.7 

3.9

4.3

4.1

3.1

116.5

3.88

231

Dec.

2.3

373

4.1

4.2

4.2

3.9

3.9

3.8

3.8

3.7

3.7

3.5

3.5

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.5

9.6

14 

10

5.4

4.5

4.4

4.5

137.8

4.45

273

Jan.

2.7

3.5

4.4

4.4

4.4

2.1

3.3

4.5

3.8

4.7

4.3

4.4

4.5

4.5

4.6

4.6

4.5

4.4

4.4

4.2

4.0

4.1

4.2

4.2

162

2,720 

476

98

62

52

47

3,717.7

120

7,370

Feb.

43

44

39

33

32

28

25

24

22

22

20

20

20

20

20

20

20

20

20

18

18

19

24

24

20

20

20

20

19

694

23.9

1,380

Mar.

19

19

18

18

18

18

17

16

16

15

15

15

14

14

15.

13

13

13

14

17

17

16

16

16

16

16 

15

15

15

15

15

487

15.7

966

Apr.

15

16

22

24

24

16

16

14

15

15

17

-55 31

18

16

15

16

17

16

16

16

15

15

15

14

17 

16

16

16

16

518

17.3

1,030

May

16

15

15

15

15

15

15

16

60

65

33

28

22

19

18

18

18

18

18

18

18

18

18

18

18

18 

17

17

16

16

16

647

20.9

1,280

June

16

T6

15

15

15

14

14

13

13

13

13

13

13

12

12

12

12

13

13

12

13

13

12

13

13

12 

11

TT

11

11

389

13.0

772

July

11

11

11

11

10

11

11

11

10

11

12

10

10

10

8.0

8.8

10

8.4

8.7

8.8

a. 9

8.7

8.7

8.5

8.4

8.7 

9.3

8.4

8.6

8.6

8.5

299.0

9.65

593

Aug.

8.3

8.5

8.4

8.4

8.2

8.1

8.5

7.8

8.8

' 8.6

8.1

7.8

9.3

To" 10

9.2

5.4

670

7.3

7.4

7.1

6.6

6.3

6.5

7.7

8.0 

5.9

7.2

8.2

8.0

7.8

243.4

7.85

483

Sept.

7.6

T74

7.3

7.1

7.0

6.9

7.2

6.7

6.2

6.0

5.7

5. .7

5.5

5.3

5.3

5.5

5.5

5.4

5.6

5.5

6.2

6.2

5.8

5.5

5.2

5.0 

4.9

4.6

4.5

476

176.9

5.90

351

Calendar year 1955: Max 50 Min 1.3 Mean 6.69 Ao-ft 4,840

Water year 1955-56: Max 2,720 Min 2.1 Mean 20.7 Ac-ft 15,040
CARPINTERIA CREEK BASIN 143

Carpinteria Creek near Carpinteria, Calif.

Location. Lat 34°24'04", long 119°29 I 08", in El Rinoon Grant, on left bank at upstream 

side of bridge on State Highway 150, 200 ft downstream from Gobernador Creek and 

1.8 miles northeast of Carpinteria, Santa Barbara County.

Drainage area. 13.8 sq mi.

Records available. January 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 130 ft (from topographic map).

Average discharge. 15 years, 1.48 cfs (1,070 acre-ft per year); median of yearly mean 

discharges, 0.4 cfs (290 acre-ft per year).

Extremes . Maximum discharge during year, 230 cfs Jan. 26 (gage height, 3.45 ft); no flow 

during most of year.

1941-56: Maximum discharge, 2,440 cfs Jan. 15, 1952 (gage height, 7.75 ft), from 

rating curve extended above 500 cfs on basis of slope-area determination of peak flow; 

no flow at times each year.

Remarks. Records fair. Discharge measurements or observation of no flow generally made 

twice a month. Gobernador Land and Water Co. diverts from Gobernador Creek 1.8 miles 

above station. Small lake three-quarters of a mile southeast of station and outside 

the drainage area stores storm runoff and surplus water diverted by Gobernador Land 

and Water Co. from Gobernador Creek. At times this lake is drained by pumping water 

into Gobernador Creek 1,000 ft above station. Pumping occurred this year Feb. 13-15.

Revisions (water years).--WSP 1061: 1943.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

.15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

O

0

Nov.

fi

O

O

0

0

0

0

0

o

0

o

0

0

_a

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

o

0.1

O.003

0.2

Dec.

o

0

o

0

0

o

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.4

1.5

.7

.1

0

0

0

o

2.5

O.08

5.0

Jan.

o

0

0

o

o

0

o

0

0

o

0

o

0

0

0

0

0

o

0

0

0

0

o

0

9.0

123

33

2

1

.9

1.2

170.1

5.49

337

Feb.

JU1

1.0

o

0

0

0

o

0

0

0

0

0

.7

1.0

.5

0

O

O

0

0

0

o

.4

0

0

0

0

0

0

4.7

0.16

9.3

Mar.

0

O

O

Apr.

fi

O

0

0

0

0

o

0

o

0

^

.6

0

0

0

0

0

o

o

0

0

o

0

0

0

0

0

0

Q

0

1.4

0.05

2.8

May

0

0

o

0

o

o

0

0

.LuZ

.3

0

0

0

0

o

0

0

o

o

0

o

o

0

o

0

0

0

0

0

0

0

1.5

0.05

3.0

June

0

0

O

July

0

0

0

Aug.

0

O

0

Sept.

0

O

0

Calendar year 1955: Max 4.5 Mln 0 Mean O.03 Ac-ft 21

Water year 1955-56: Max 123 Mln 0 Mean O.49 Ac-ft 357

Peak discharge (base. 25 cfa). Jan. 26 (3:30 p.m.) 23O cfa (3.45 ft).
144 ATASCADERO CREEK BASIN

Atascadero Creek near Goleta, Calif.

Location (revised).--Lat 34°25'29", long 119°48'39", in La Goleta Grant, on downstream 

 side of left-bank abutment of highway bridge Just downstream from Maria Ygnaclo Creek, 

1.3 miles upstream from mouth, and 1.3 miles southeast of Goleta, Santa Barbara County.

Drainage area. 18.3 sq ml.

Records available. October 1941 to September 1956. 

Alascadero Creek near Goleta.

Prior to October 1947, published as

Gage.--Water-stage recorder. Altitude of gage Is 20 ft, revised (from topographic map).

Average discharge. 15 years, 2.10 cfs (1,520 acre-ft per year); median of yearly mean 

discharges, 0.8 cfs (580 acre-ft per year).

Extremes. Maximum discharge during year, 1,090 cfs Jan. 26 (gage height, 8.36 ft); no flow 

for many days.

1941-56: Maximum discharge, about 4,500 cfs Jan. 15, 1952 (gage height, 10.85 ft), 

estimated on basis of records for nearby streams; no flow during a large part of each 

year.

Remarks.--Records fair except those for periods of no gage-height record, which are poor. 

Discharge measurements or observations of no flow generally made twice a month, and daily 

during periods of high flow. Small diversions above station for irrigation. Much of 

low flow results from return waste water from local irrigation.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tota]

Mean

Ac-ft

Oct.

0.1

-il

.1

.1

.2

.1

.1

.1

P_

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

.1

0 

0

1.3

0.04

2.6

Nov.

0.1

0

0

0

0

0

0

0

.1

.2

r, 

0

0

.1

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

0.9

0.03

1.8

Dec.

S.

0

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

59

128

78

25

4.1

2.0

1.0 

2.0

299.2

9.65

593

Jan.

0.8

.4

.4

a .3

a .2

a .2

a .2

a .1

a .1

a .1

a .1

a .1

a .1

aO

aO

aO

ao

aO

0

0

0

0

0

0

78

703

100

21

15

12 

15

947.1

30.6

1,680

Feb.

8.4

3.7

2.9

2.0

1.6

1.2

.9

.7

.5

.5

.5

.5

.4

.4

.4

.4

.3

.3

.3

.3

.4

4.5

5.2

2.6

1.6

1.1

.8

.6

43.2

1.49

86

Mar.

0.4

.3

.3

.2

.2

^"a

.1.1.1

.1.1.1.1.1

.2

.2

.2

.2

.1

.2

.3

.4

.4

.4

.2

.1

.1

.1

.2

.1

5.6

0.19

12

Apr.

S.

0

.1

0

.1

.1.1

0

0

0

1.7

5^7

2.4

1.8

1.0

.7

.5

.4

.4

.2

.1

.1

.1

0

0

.1

.2

.1

.1

0

16.0

0.53

32

May

0

0

0

0

0

0

0

.1

4.7

1.4

.2

.1

0

0

0

0

0

0

0

0

0

0

0

 o

0

0

0

0

0 

0

13.5

0.44

27

June

0

0

0

0

0

0

0

.1

0

0

0

.1

0

0

.1

.1!

0

0

0

0

0

0

.1

0

0

0

0

.1

0

0

0.7

0.02

1.4

July

a

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

o'^y

0

0

0

0

0

0 

0

0.4

0.01

0.8

Aug.

o

li

0

0

0

0

0

0

0

0

0

0

0

0

0

0

aO

aO

aO

aO

aO

aO

0

0

0

0

.1.1

0

.1

0

0.4

0.01

0.8

Sept.

0

.1.1

.1

0

.1.1.1

4.2

.1.1.1

.2

.2

.2

.2

.2

.1

0

0

0

0

0

0

.1.1

0

.1

0

2.7

0.09

5.4

Calendar year 1955: Max 128 Min o Mean 1.29 Ac-ft 938

Water year 1955-56 : Max 703 Mln Q Mean 3.64 Ac-ft 2,640

Peak discharee (base. SO cf a ) . Tinn . 24 IB p.m. ) i.7,7 r-.fs (7.KO ft-.); Tu>n. ?fi (?:/50 p.m.) 17P r,fs

(6.56 ft); Jan. 26 (4:30 a.m.) 1,090 cfs (8.36 ft).

a No gage-height record; discharge interpolated or estimated on basis of 2 discharge measurements,

normal recession, and recorded range in stage.
SAN JOSE CREEK BASIN 145

San Jose Creek near Goleta, Calif.

Location (revised).--Lat 34°27i33", long 119°48'29", In La Goleta Grant, on left pier of 

Patterson Avenue Bridge, 1.1 miles downstream from unnamed tributary and 1.7 miles 

northeast of Goleta, Santa Barbara County.

Drainage area. 5.54 sq ml.

Records available. January 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 100 ft (from topographic map). Prior 

~^f;o Dec. 24, 1955, at datum 4.00 ft higher.

Average discharge.--15 years, 1.37 cfs (992 acre-ft per year); median of yearly mean discharges, 0.8 cfs (580 acre-ft per year).

Extremes. Maximum discharge during year, 978 cfs Dec. 24 (gage height, 8.02 ft, present 

datum), from rating curve extended above 200 cfs on basis of slope-area determination 

of peak discharge; no flow for many days.

1941-56: Maximum discharge, 1,960 cfs Apr. 4, 1941, from rating curve extended 

above 850 cfs by logarithmic plotting; maximum gage height, 11.24 ft, present datum, 

Jan. 21, 1943; no flow at times during each year.

Remarks. Records fair except those above 100 cfs and those for periods of no gage-height 

record, which are poor. Discharge measurements or observation of no flow generally made 

twice a month during low flows and once a week during moderate to high flows. Many small diversions above station for irrigation.

Cooperation.--Two discharge measurements furnished by Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

00"

0

0

0

0

0

0

0

0

0

0

0

aO

aO

aO

aO

aO

aO

0

0

0

0

0

0

0

0

0

0

_._!

0.2

0.006

0.4

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

~.l 0

.1.1

.1

.8

7T

.1

.3

.2

.2

.2

.6

.2

.2

.2

.2

.2

.2

.2

.1

.1

5.3

0.18

11

Dec.

1.2

.6

.4

.7

.4

74" .3

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

1.8

144

110

77

12

5.5

a2

al

a3

364.9

11.8

724

Jan.

al

a. 9

a. 7

a. 5

a.i

a. 6

a. 9

a. 9

a. 9

a. 8

a. 8

.8

.8

.9

.9

.9

.8

.8

.7

.8

.9

.8

1.0

1.4

89

~62 266

15

8.4

7.5

7.5

475.2

15.3

943

Feb.

4.8

3.9

3.3

2.8

2.5

2.3

2.1

2.1

1.9

1*7

1.5

1.5

1.5

1.5

1.5

1.5

1.3

1.3

1.3

1.3

1.2

1.2

~4.6 10

2.3

1.5

1.3

1.2

1^

65.9

2.27

131

Mar.

~7ff 1.0

.8

1.0

1.0

1.0

.9

.9

.9

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.7

.7

.7

.8

.8

.7

.6 76"

 6

.7

25.1

0.81

50

Apr.

1.7

1.0

.8

.8

.7

.7

.7

$

.7

16

7.3

3.6

4.7

2.5

2.1

1.7

1.7

1.5

1.3

1.2

1.0

.9

.9

1.0

11

4.8

2.8

2.1

1.9

78.4

2.61

156

May

1.7

1.5

1.5

1.5

1.5

1.5

1.5

5.6

-§.B 29

5.2

3.3

2.5

2.1

1.7

1.3

1.3

1.3

1.2

1.2

1.2

1.0

1.0

1.0

1.0

1.0

.9

.9

 .85"

 O

86.6

2.79

172

June

~7ff 0.8

.7

.7

.8

.6

.6

.6

.6

.6

.5

.4

.2

.2

.2

.3

.3

.4

.3

.2

.2

.2

.1

73

.1

.1

.1

.1

.1

.1

11.2

0.37

22

July

~7T 0.1

.1

.1

.1

.1

.1

.2

.1

.1

.1

.1

.2

.2

.2

.2

.2

.1

.2

.2

.2

.3

.3

.2

.2

.2

.2

.1

.1

.1

.1

4.8

0.15

9.5

Aug.

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

.1

.1.1

.1

.1

.1

.1

.1.1

.1

.1

3.0

0.10

6.0

Sept.

~7£- 0.2

.2

.2

.2

.1

.1

.1

.1

0_

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.4

0.05

2.8

Calendar year 1955: Max 144 Mln 0 Mean 1.50 Ac-ft 1,090

Water year 1955-56: Max 266 Mln 0 Mean 3.07 Ac-ft 2,230

Peak discharge (base, 100 efa).--Dee. 24 (6 p.m.) 978 cfs (8.02 ft); Dec. 26 (12:30 p.m.) 440 cfa 

(4.80 ft); Jan. 26 (12 m.) 489 cfa (4.06 ft); Apr. 11 (4 p.m.) 108 cfa (2.87 ft).

a No gage-height record; dlacharge eatlmated on basis of 5 dlacharge measurementa, weather recorda, 

and recorda for nearby atatlona.
146 SANTA YNEZ RIVER BASIN

Santa Ynez River at Jameson Lake, near Montecito, Calif.

Location. Lat 34*29'32", long 119*30'25", on upstream side of Juncal Dam, 6.5 miles north 

of Carpinteria and 8 miles northeast of Montecito, Santa Barbara County.

Drainage area. 16.0 sq mi (not including Alder Creek).

Records available. December 1930 to September 1956. 

"at Juncal Reservoir, near Montecito."

Prior to October 1938, published as

. Water-stage recorder on lake and water-stage recorder and sharp-crested weir on 

outlet conduit. Datum of gage is 2,021.6 ft above mean sea level (Bureau of Reclamation benchmark), or 2,000 ft above arbitrary datum (called sea level) generally used 

for works in this vicinity.

Remarks. Records of total inflow represent all water reaching Jameson Lake, including 

rainfall on the lake, computed on basis of records of storage, diversion to the city of 

Montecito (draft), spill and release to river, and evaporation. Records of net runoff 

exclude rainfall on water surface, computed on basis of area and records of precipitation . Monthly evaporation from lake surface computed on basis of evaporation from 

Class A pan using coefficient of 0.80. Capacity and area ratings for this lake are 

based on surveys made in 1948. Lake capacity at spillway level (gage height, 225.0 ft), 

6,760 acre-ft. Dead storage, 268 acre-ft, below lowest outlet at gage height 139.0 ft, 

included in these records. There is no regulation or diversion above Jameson Lake. A 

part of the flow of Alder Creek, which enters Santa Ynez River 2 miles downstream from 

Juncal Dam, is diverted at elevation 2,250 ft through a tunnel to Jameson Lake, and is 

included in these records.

Cooperation. Reservoir-operation records and related data furnished by Montecito County 

water District.

Revisions (water yearsl. WSP 1151: 1948.

Monthly runoff, water year October 1955 to September 1956

Month

September.....

Calendar 

year 1955.

February......

May...........

September.....

Water year 

1955-56.

Jameson Lake

Gage height 

Tfeet)t

201.50 

199.05 

197.18 

197.19

-

199.20 

199.75 

199.09 

199.37 

200.44 

199.21 

197.02 

194.06 

191.99

-

Contents 

(aerefeet)

3,934 

3,688 

3,506 

3,507

-

3,703 

3,757 

3,692 

3,720 

3,826 

3,704 

3,491 

3,216 

3,031

-

Change 

In 

contents 

(aerefeet)

-246 

-182

+1

-1,568

+196 

+54 

-65 

+28 

+106 

-122 

-213 

-275 

-185

-903

Draft 

(aerefeet)

207 

157 

60

1,745

65 

45 

121 

125 

61 

142 

195 

228 

147

1,553

Spill and 

release 

(aorefeet)

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Evaporation 

(aorefeet)

25 

7 

2

378

3 

9 

27 

19 

28 

50 

54 

41 

36

301

Total 

inflow 

(aorefeet)

-14 

-18 

63

555

264 

108 

83 

172 

195 

70 

36 

-6 

-2

951

Rain on 

reservoir 

(aorefeet)

0 

13 

50

216

51 

10 

0 

54 

21 

0 

0 

0 

0

199

Net 

runoff 

(acrefeet)

-14

-31 

13

339

213 

98 

83 

118 

174 

70 

36 

-6 

-2

752

t At 6 p.m. on last day of month.

Note. For months when inflow to the reservoir was small and other elements were relatively large, 

negative or discordant figures of inflow or runoff may appear. To the extent that such discrepancies may be attributed to Inaccuracies in the capacity rating, quantities too small for periods 

of falling stage In the reservoir are compensated by quantities too large for periods of corresponding rising stage. Inaccuracies In figures of draft or evaporation, which may be within reasonable limits in these figures, may result In disproportionately large inaccuracies In small figures 

of Inflow or runoff computed as residuals.
SANTA YNEZ RIVER BASIN 147

Santa Ynez River above Gibraltar Dam, near Santa Barbara, Calif.

Location. Lat 34°31'37", long 119°41 T 10", on upstream side of Gibraltar Dam, 7 miles 

north of Santa Barbara, Santa Barbara County.

Drainage area. 216 sq mi.

Records available. April 1920 to September 1956. November 1903 to April 1907, October 

1907 to January 1908, February 1910 to November 1918, at river gaging station at damsite; records not equivalent because records since April 1920 are based on reservoir 

operation. Prior to October 1943, published as "near Santa Barbara."

Gage. Water-stage recorder on reservoir and water-stage recorder and sharp-crested weir 

on diversion canal below dam. Spill and release measured at river gaging station below 

dam (see following page). Datum of reservoir gage is at mean sea level [datum of 1929). 

Prior to Oct. 1, 1955, at datum 21.82 ft higher.

Remarks. Records of total inflow represent all water reaching Gibraltar Reservoir, ineluding rainfall on reservoir, computed on basis of records of storage, diversion to 

city of Santa Barbara (draft), spill and release to river, and evaporation. Records 

of net runoff exclude rainfall on water surface, computed on basis of area and records 

of precipitation. Monthly evaporation from lake surface computed on basis of evaporation from Class A pan using coefficient of 0.80. Reservoir capacity and area tables 

are based on surveys made in 1956. Reservoir capacity at spillway level (elevation, 

1,399.82 ft), 14,800 acre-ft. Dead storage, 716 acre-ft, below lowest outlet at elevation 1,333.86ft, included in these records. Plow regulated by Jameson Lake since December 1930 (see preceding page).

Cooperation. Reservoir-operation records and related data furnished by city of Santa 

Barbara.

Revisions (water years). WSP 706: 1921-22. WSP 1041: 1944. WSP 1395: Drainage area. 

Monthly runoff, water year October 1955 to September 1956

Month

Calendar 

year 1955.

March...........

May.............

Water year 

1955-56.

Gibraltar Reservoir

Elevation 

(feet)t

1,387.19 

1,384.26 

1,381.44 

1,383.65

-

1,398.57 

1,399.40 

1,399.36 

1,400.00 

1,399.90 

1,398.46 

1,396.21 

1,393.99 

1,391.95

-

Contents 

(a<a?efeet)

10,045 

9,154 

8,370 

8,979

-

14,248 

14,598 

14,581 

14,854 

14,811 

14,202 

13,283 

12,418 

11,662

-

Change in 

contents 

(acrefeet)

-891 

-784 

+609

-2,353

+5,269 

+350 

-17 

+273 -43 

-609 

-919 

-865 

-756

+1,617

Draft 

(acrefeet)

886 

864 

296

6,379

326 

426 

636 

159 

318 

644 

754 

706 

640

6,655

Spill 

and 

release (acrefeet)

3 

3

13

84

12 

1,040 

87 

946 

1,220 

72 

56 

23 

6

3,481

Evaporation 

(acrefeet)

109 

51 

15

1,556

24 

66 

141 

121 

155 

223 

257 

213 

194

1,569

Total 

inflow 

(acrefeet)

107 

134 

933

5,666

5,631 

1,882 

847 

1,499 

1,650 

330 

148 

77 

84

13,322

Rain on 

reservoir 

(acrefeet)

0 

37 

194

733

151 

33 

0 

181 

72 

0 

0 

0 

0

668

Net 

runoff 

(acrefeet)

107 

97 

739

4,933

5,480 

1,849 

847 

1,318 

1,578 

330 

148 

77 

84

12,654

At 6 p.m. on "last day of month. 

Note. For months when inflow to the reservoir was small and other elements were relatively large, 

negative or discordant figures of inflow or runoff may appear. To the extent that such discrepancies may be attributed to inaccuracies in the capacity rating, quantities too small for periods of 

falling stage in the reservoir are compensated by quantities too large for periods of corresponding 

rising stage. Inaccuracies in figures of draft or evaporation, which may be within reasonable limits 

in these figures, may result in disproportionately large inaccuracies in small figures of inflow or 

runoff computed as residuals.
148 SANTA YNEZ RIVER BASIN

Santa Ynez River below Gibraltar Dam, near Santa Barbara, Calif.

Location. Lat 34°31'28", long 119°41 I 11", on left bank 700 ft downstream from Gibraltar 

Dam and 7 miles north of Santa Barbara, Santa Barbara County.

Drainage area. 216 sq mi.

Records 1941). available. April 1920 to September 1956 (monthly discharge only prior to October 

Gage. Water-stage recorder. Altitude of gage is 1,250 ft (from topographic map). Waterstage recorder and sharp-crested weir on outlet channel below dam and water-stage recorder on Gibraltar Reservoir used as supplementary gages. Prior to Apr. 17, 1952, 

water-stage recorder on Gibraltar Reservoir used as principal gage. Apr. 17 to Oct. 15, 

1952, staff gage at same site and datum.

Average discharge. 36 years, 35.7 cfs (25,850 acre-ft per year), unadjusted; median of 

yearly mean discharges, 11 cfs (8,000 acre-ft per year).

Extremes. Maximum discharge during year, 312 cfs May 9 (gage height, 7.06 ft); no flow 

Jan. 5-24, June 16-18.

1920-56: Maximum discharge, 35,500 cfs Mar. 2, 1938, computed from spillway rating; 

no flow at times during most years.

Remarks. Records good. Discharge measurements generally made twice a month. Discharge 

represents flow In Santa Ynez River passing Gibraltar Dam. Flow regulated by Gibraltar 

Reservoir and Jameson Lake (see p. 146, 147). City of Santa Barbara diverted 6,655 acreft during the water year from Gibraltar Reservoir; Montecito County Water District diverted 1,553 acre-ft during the water year from Jameson Lake.

Cooperation. Records of gage height furnished by city of Santa Barbara. 

Revisions (water years). WSP 706: 1921-22. WSP 1041: 1944.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.05

.05

.05

.05

.05

.05

.05

.05

.06

TOT

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.06

.06

.06

1.59

0.051

3.2

Nov.

0.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

.06

,lg

.06

..05

.06

.06

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

1.73

0.058

3.4

Dec.

0.07

.07

.05

.10

.07

.07

.06

.05

.05

.05

.05

.05

.05

.05

.05

.05

.06

.06

.06

.06

.06

.07

.08

1.0

2.9

.68

.26

.09

.05

TOT

6.47

0.209

¥

Jan.

0.04

.03

.02

.02

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.46

4.0

T§4

.18

.12

.10

.14

5.95

0.192

12

Feb.

0.10

.09

13*.64

27

35

34

31

27

22

24

18

16

16

16

16

14

13

12

12

11

11

18

27

24

22

21

22

21 . _ _ .

523.83

18.1

1,040

Mar.

20

14

3.1

2.9

1.6

.20

.26

.24

.18

.11

.10

.09

.08

.07

.07

.07

.07

.08

.08

.06

.05

.05

.05

.06

.05

~^9~ .04

.09

.08

.06

.04

44.02

1.42

87

Apr.

0.04

.04

.03

TOT

.04

.05

.06

.06

.04

.04

7.8

82

64

34

14

12

16

21

36

36

12

9.9

11

16

8.7

18

22

21

20

15

476.84

15.9

946

May

13

13

14

15

14

13

13

15

~87 138

64

31

25

25

22

19

14

12

9.0

7.1

5.0

4.3

4.5

5.1

5.7

5.5 5'.3

4.9

4.7

4.5

3.8

616.4

19.9

1,220

June

3.0

2.9

1.8

.69

.37

.22

.26

.37

.22

.20

.12

.10

.06

.03

.01

0

0

0

1.3

2.4

2.4

2.4

2.4

2.4

2.4

2.3

2.0

2.0

2.0

2.0

36.35

1.21

72

July

2.0

1.8

1.4

1.4

1.4

1.4

1.4

1.3

.99

.97

.98

.98

.97

.97

.97

.85

.58

.58

.58

.58

.58

.58

.57

.55

.55

.55

.55

.55

.54

.49

.42

28.03

0.904

56

Aug.

0.43

.43

.42

.42

.42

.42

.41

.41

.42

.41

.41

.41

.41

.41

.40

.40

.41

.41

.41

.41

.41

.35

.33

.32

.33

.32

.32

.28

ti

.25

11.67

0.376

23

Sept.

0.25

.24

.24

.25

.15

.10

.10

.09

.09

.10

.10

.10

.10

.10

.10

.10

.10

.08

.06

.06

.06

.05

!07

.07

.07

.07

.07

.07

.07

3.17

0.106

6.3

Calendar year 1955 : Max 3.2 Win 0 Mean 0.118 Ac-ft '85

Water year 1955-56 : Max 138 Min 0 Mean 4.80 Ac-ft 3,480

Note. Discharge for periods Oct. 1 to Nov. 13, Nov. 16-30, June 19 to Sept. 30, obtained from unpublished records for supplementary gage on outlet channel below dam.
SANTA YNEZ RIVER BASIN 

Santa Ynez River below Los Laureles Canyon, near Santa Ynez, Calif.

149

Drainage area. --277 sq mi.

.Records available . April 1947 to September 1956.

Average discharge. 9 years, 24. Q cfs (17,380 acre-ft per year).

Il^5*«ruaj?si^^"KSMw^^Mr"i;^£w^^, 

from s;finfiltration f'Hr«s^^ gallery in river bed at station irrigation aoove station and

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 26 to Jan. 26)

Oct. 1 to Apr. 11 Apr. 11 to Sept. 30

3.7 

.3.8

3.9

4.0

4.1

4.2

4.3

4.6 

7.7

4.5 

4.7 

4.9 

5.2 

5.5 

6.0 

6.6

60

125

225

415

655

.2

1.1 

3.3 

8.3

4.6

4.7 

5.0 

5.5

62

157

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

o

0

0

0

0

o

0

0

0

0

o

0

0

0

0

0

0

0

0

o

o

242

.307

198

68

18

7.0

3.4

7.7

851.1

27.5

1,690

Jan.

6.6

5.2

3.9

3.2

3.0

2.6

2.2

2.0

1.9

1.4

1.4

1.3

1=1 

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.4 

1.4

1.6

1.6

56

638

372

149

79

46

44

1,434.4

46.3

2,850

Feb.

33

28

23

20

24

39

45

43

35

33

28

25

22 

20

20

20

18

17

16

15

ii 

14

24

28

28

28

25

23

23

- -----

731

25.2

1,450

Mar.

22

20

18

13

9.8

8.5

7.0

6.0

.4

.9

.6

.6

.4 

.6

.6

.2

.2

.4

.6

.2

.0 

.4

.6

.6

.4

3.2

2.6

2.4

1.9

J^S

1.9

191.8

6.19

380

Apr.

2.6

3.0

2.6

2.4

2.0

2.0

2.6

2.6

2.0

1^8

54

66

100 

75

49

29

19

20

24

41

36

16

11

9.7

15

30

27

27

26

25

723.3

24.1

1,430

May

IS

16

17

19

20

20

19

20

102

139

106

73

46

38

33

30

28

24

20

15

13 

12

9.7

9.0

9.0

9.0

10

9.7

9.2

9.0

1*3.

910.2

29.4

1,810

June

6.9

6.3

5.8

5.3

4.9

4.5

4.5

3.7

3.3

2.9

2.6

2.6

2.3 

2.2

2.2

2.0

1.8

1.6

1.4

1.2

1.2 

1.2

1.2

1.1

1.1

.9

.8

jl

.6

.7

77.4

2.58

154

July

2*3-

.7

.7

.7

.7

.7

.7

.6

.6

.5

.5

.5

.4

a.2

.2

0

.1

.3

.3

.2

.1

0

0

.1

.1

.2

.2

0

0

0

10.0

0.32

20

Aug.

0

.v!

.1

.1

0

0

0

0

0

0

0

0

0 

0

0

0

0

o

0

0

0 

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

Sept.

0

0

0

Calendar year 1955: Max 307 Min 0 Mean 3.62 Ac-ft 2,620

Water year 1955-56 : Max 638 Min 0 Mean 13.5 Ac-ft 9,780

493801 O - 59 - 11
150 SANTA YNEZ RIVER BASIN

Santa Cruz Creek near Santa Ynez, Calif.

Location. Lat 34°35'45", long 119°54'25", In Tequepls Grant, on right bank 2.2 miles up-

 stream from mouth and 10 miles east of Santa Ynez, Santa Barbara County.

Drainage area. 75 sq ml, approximately.

Records available.--October 1941 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 786.63 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to Jan. 22, 1943, at site 1.9 miles downstream at different datum (destroyed by flood). Jan. 22, 1943, to Sept. 26, 1952, at site 1.7 miles 

downstream at different datum.

Average discharge . 14 years (1941-42, 1943-56), 10.2 cfs (7,380 acre-ft per year); median

 of yearly mean discharges, 7.5 cfs (5,4aO acre-ft per year).

Extremes.--Maximum discharge during year, 2,040 cfs Jan. 26 (gage height, 8.95 ft); no 

"* flow Oct. 1 to Dec.'23, July 22 to Sept. 30.

1941-56: Maximum discharge not determined, occurred Jan. 22, 1943; no flow at times 

during 1953-56.

Remarks. Records good except those above 100 cfs and those for periods of no gage-height

 record, which are poor. Discharge measurements generally made twice a month.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Dec. 27 to Jan. 3, 

Jan. 12-25, July 4-23)

3.7

3.8

3.9

4.0

4.1

4.2

4.3

4.4

4.5 

4.7 

4.9

5.1

5.5 

6.0 

7.0

8.0

8.1

145

350

800

1,370

1,440

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

24

319

127

55

15

8.3

5.6

5.6

559.5

18.0

1,110

Jan.

5.6

4.3

4.1

3.7

3.3

3.0

2.6

2.4

2.4

2.2

2.2

2^0

2.0

2.0

2.0

2.1

2.0

2.1

2.1

2.4

2.4

2.4

2.6

2.5

323

1,380 '535

a!80

a!20

a75

aSO

2,727.4

88.0

5,410

Feb.

a35

30

26

24

23

23

20

19

18

17

15

15

15

14

14

14

13

13

13

12

12

12

16

18

15

14

13

13

12 _

498

17.2

988

Mar.

12

11

11

11

10

10

10

10

9.7

9.4

9.0

9.0

9.0

9.0

8.6

8.3

8.0

7.6

7.6

7.6

7.3

7.3

7.0

7.0

7.0

7.0

6.7

6.4

6^4

6.4

6.4

262.7

8.47

521

Apr.

7.6

7.6

6.7

6.4

6.1

5.8

5^3

5.3

5.3

5.6

13

24

15

12

11

15

12

12

11

9.7

9.0

8.6

7.6

7.0

7.0

9.4

!9

14

10

9.0

297.0

9.90

589

May

8.3

7.6

7.0

7.0

7.0

7.0

7.0

7.6

24

44

20

15

13

10

9.4

8.3

8.0

8.0

7.3

7.3

7.0

7.0

7.0

7.0

7.0

7.0

6.7

6.7

6.7

6.7

6.4

308.0

9.94

611

June

6-1

576

5.1

5.1

5.1

5.1

4.8

4.3

3.9

3.7

3.7

3.3

3.1

3.0

3.0

3.0

2.6

2.4

2.4

2.4

2.4

2.0

1.7

1.6

1.5

1.0

.8

.5

.4

. .3

89.9

3.00

178

July

0.2

. 3

73

.3

.3

.2

a.l

a.l

a.l

a.l

a.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

8.

0

0

0

0

0

0

0

0

0

3.1

0.10

6.1

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 319 Min 0 Mean 4.13 Ac-ft 2,990

Water year 1955-56: Max 1,380 Min o Mean 13.0 Ac-ft 9,410

Peak discharge (base. 100 ofB). Dec. 25 (l a.m.) 650 cfs (6.70 ft); Jan. 26 (4 p.m.) 2,040 cfs 

(8.95 ft).

a Ho gage-height record; discharge estimated on basis of normal recession, weather records, and 

records for nearby stations.
SANTA YNEZ RIVER BASIN 151

Caehuma Creek near Santa Ynez, Calif.

Location. Lat 34°36'35", long 119°55'55", In Tequepls Grant, on right bank 2.3 miles upstream from mouth, 2.7 miles downstream from Lazaro Canyon, and 8.5 miles east of Santa 

Ynez, Santa Barbara County.

Drainage area.--20.5 sq mi.

Records available. October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 800 ft (from topographic map). Prior to 

Aug. 13, 1953, at site 1.3 miles upstream at different datum.

Average discharge. 6 years, 3.07 cfs (2,220 acre-ft per year).

Extremes.--Maximum discharge during year,-448 cfs Jan. 26 (gage height, 5.41 ft); no flow 

Oct. 1 to Dec. 23, June 29, July 4 to Sept. 30.

1950-56: Maximum discharge, 4,300 cfs Jan. 15, 1952 (gage height, 6.05 ft, site and 

datum then in use), from rating curve extended above 200 cfs by logarithmic plotting; 

no flow during several months each year.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made twice a month.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

3.1 0 3.8 10

3.2 .2 4.0 22

3.3 .5 4.1 31

3.4 1.1 4.3 55

3.5 2.3 4.6 113

3.6 4.0 4.9 210

3.7 6.7 5.0 250

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

a5

820.

aio

a6

a3

1.7

1.4

3.2

50.3

1.62

100

Jan.

2.0 

1.5

1.3

1.1

1.1

1.1

1.0

.9

.8

.8

.8

.7

.7 -i

.6

.6

.6

.6

.7

.7

.7

.8

.7

67

230

101

32

al8

a!4

alO

493.0

15.9

978

Feb.

a!.6

7.0

6.7

6.4

6.1

5.5

5.0

4.5

4.2

4.0

3.8

3.6

3.4

3.4

3.2

3.0

2.9

2.7

2.7

2.7

2.6

3.4

3.6

3.0

2.9

2.9

2.6

.-- !%4

120.8

4.17

240

Mar.

H2.4

2.4

2.3

2.1

2.0

2.0

1.9

1.7

1.7

1.7

1.6

1.5

1.4

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.2

1*1

1.1

1.1

1.1

49.7

1.60

99

Apr.

1.4 

1.4

1.2

1.1

1.1

1.1

1^0

1.0

1.0 1.1

3.5

4.6

4.0

UL

4.0

3.2

2.9

2.6

2.4

2.0

1.9

1.7

1.6

1.5

1.4

a3

a3.5

a3

a2.5

. .??..

70.5

2.35

140

May

1.9 

1.7

1.6

1.4

al.4

al.4

al.4

al.4

a7.5

a8

6.1

5.0

3.8

3.4

2.9

2.7

2.7

2.4

2.3

2.4

2.1

2.1

2.0

2.0

2.0

1.7

1.7

1.6

1.5

1.5

1.3

80.9

2.61

160

June

ia1.1

1.0

.9

.9

.8

.7

.6

.6

.5

.5

.5

.4

.5

.5

.4

.4

.4

.3

.3

.3

.3

.2

.2

.2

.1

.1

.1

£.l

14.0

0.47

28

July

0,1

!l

a0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 23 Mln 0 Mean 0.81 Ac -ft 585

Water year 1955-56: Max 230 Mln 0 Mean 2.40 Ao-ft 1,750

Peak discharge (base, 100 ofs5.~Deo. 24 or 25 (time unknown? 155 cfs (4.86 ft); Jan. 26

(2:30 p.m.) 448 cfs (5.41 ft).
152 SANTA YNEZ RIVER BASIN

Cachuma Reservoir near Santa Ynez, Calif.

Location.--Lat 34°35'00", long ligoSSUO", at Cachuma Dam on Santa Ynez River, on boundary 

of Canada de los Pinos and Lomas de la Purifioaoion Grants, on upstream face near left 

end of dam, 1.5 miles downstream from Cachuma Creek and 6 miles east of Santa Ynez, 

Santa Barbara County.

Drainage area.--417 sq mi.

Records available. November 1952 to September 1956.

Gage- Staff gage. Datum of gage is at mean sea level, datum of 1929 (Bureau of Reclamation benchmark).

Extremes. Maximum contents during year, 40,936 acre-ft May 27 (elevation, 668.47 ft); minimum, 19,590 acre-ft Oct. 1 (elevation, 644.00 ft). 

1952-56: Maximum contents, that of May 27, 1956.

Remarks. Reservoir is formed by earth-fill dam. Storage was begun Nov. 16, 1952. Area 

and capacity ratings for reservoir are based on surveys made in January 1953. Dead 

storage below outlet gate to river (elevation, 600 ft], 3,114 acre-ft, included in contents. Capacity below sill of inlet to Tecolote tunnel (elevation, 660 ft), 32,514 

acre-ft; below spillway level (elevation, 720 ft), 125,292 acre-ft; below top of 

4 radial gates (elevation, 750 ft), 204,874 acre-ft. Water is released from outlet to 

Santa Ynez River to satisfy downstream water rights, and from the inlet to Tecolote 

tunnel for use by city of Santa Barbara and nearby communities. Records show contents 

at 8:45 a.m. on first day of each month.

Cooperation. Reservoir elevations and releases through Tecolote tunnel furnished by 

Bureau of Reclamation.

Month-end elevation and contents, water y.ear October 1955 to September 1956

Date

Sept. 30.........................

Water year 1955-56. ...........

Elevation 

(feet)t

-

664.28

_

Contents 

(aore-feet)

19 590

-

36,589

.

Change In contents 

(aore-feet)

+5,301

-1,122

+16,999

Diversion through 

Teoolote tunnel 

(aore-feet)*

-

213

488

634

2,118

t Elevation at 8:45 a.m. on first day of following month. 

* Teoolote tunnel diverts water out of Santa Ynez River basin to Irrigated areas and for domestic water supply south of Santa Ynez Mountains In Santa Barbara County.
SANTA YNEZ RIVER BASIN 

Santa Ynez River near Santa Ynez, Calif.

153

mi 

asUe .1

> 10ng 1i 9052' 45"' °n °° »<>n boundary between Canada de los Pinos 

irants, on right bank, 1.1 miles downstream from Cachuma

COUnty ' Prlor to Oct ' l > 1955 '

Drainage area. 482 gq mi; 435 sq mi at previous site.

Records available. -December 1928 to September 1931, October 1932 to September 1956.

! f r!?°rd?rn *11:ltUde of S^e is 525 ft (from topographic map). Prior to 

at site 2.1 miles downstream at different datum.

dlS °harge during year ' 17° cfs APr - 18 (SaSe height, 4.15 ft); no flow 

, Maximum discharge , 43,700 cfs Mar. 2, 1938 (gage height, 17 90 ft

34 100 cfs nSJ a? ?? 6)> S1"01? rating curve extend^d above float measurement of ' d4,iuu cis; no flow at times during some years.

g°°d- Discharge measurements or observations of no flow generally made 

* *e*5 pl°w regulated by Jameson Lake, Gibraltar and CachSna Reservoirs 

ph P ' I46 - 147 ; 158 ]' Water diverted out of basin from Jameson Lake and Gibraltar and 

Cachuma Reservoirs to cities of Montecito, Santa Barbara, and Goleta for municipal 

supply. Some water pumped from wells along river banks for irrigation mun-LC1 Pal

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting -control method used Apr. 4-12)

Oct. 1 to Apr. 18 Apr. 18 to Sept. 30

2.2

2.3

2.4

2.5

2.6

1.4 

3.6

2.7 7.2

2.8 13

2.9 20

3.0 30

2.1 0

2.2 .1

2.3 .5

2.4 2.2

2.5 5.

2.7 14

2.9 26

3.1 41

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

 hr

0

0

0

2.5

0.08

5.0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

25

8.8

5.2

2.8

1.6

2.3

45.7

1.47

91

Jan.

1.2

.8

.6

.5

.4

.3

.2

.2

.1

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

1.7

6.1

~4".5 11

2.4

1.4

1.0

32.9

1.06

65

Peb,

0.7

.6

.4

.3

.2

.2

.1

.1

.1

.1

.1

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.9

0.10

5.8

Mar.

0

0

0

Apr.

0

0

0

0

2.0

4.8

6.0

6.8

7.2

12

23

23

4.2

1.3

.8

.4

.3

38

TS

31

23

22

37

38

23

13

1.7

.4

.2 

.2

333.3

11.1

661

May

0.1

.1

.1

.1

.1

0

0

0

6.2

2.2

1.1

.7

.3

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

12

14 

16

17

70.1

2.26

139

June

20

18

18

20

19

14

14

14

15

15

14

16

8.1

5.7

1.0

.2

.1

.1

.1

.1

00"

0

0

0

0

0

0

0 

0

212.4

7.08

421

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

1.7

1.7

1.7

2.2

lii

3.6

.7

1.4

2.0 

2.4

3.0

24.4

0.79

48

Aug.

1.9

.1

0

.6

8.9

9.3

9.3

12

14

13

12

12

13

15

13

12

12

12

12

10

8.5

7.3

2.4

.4

3.6

2,0

2.0

2.4

3.6

.1

0

224.4

7.24

445

Sept.

0

0

.7

1 .7

1.7

.2

0

0

0

0

0

0

0

0

0

0

0

0

.8

1.4

.7

0

0

0

.5

1.2

.7

.2

.1 

.6

10.5

0.35

21

Calendar year 1955: Max 62 Mln 0 Mean 3.73 Ac-ft 2,7OO

Water year 1955-56: Max 38 Mln 0 Mean 2.62 Ac-ft 1,900
154 SANTA YNEZ RIVER BASIN

Santa Agueda Creek near Santa Ynez, Calif.

Location.--Lat 34°35'40", long 120°01'30", in Canada de los Pinos Grant, on left downstream 

wing wall of highway bridge, 0.8 mile upstream from mouth and 3.5 miles southeast of 

Santa Ynez, Santa Barbara County.

Drainage area. 55.9 sq mi.

Records available. January 1941 to September 1956.

Sage. Water-stage recorder. Altitude of gage is 520 ft (from topographic map). Prior to 

(Jet. 1, 1955, at datum 1.0 ft higher.

Average discharge. 15 years, 2.32 cfs (1,680 acre-ft per year); median of yearly mean 

discharges, 1.0 cfs (720 acre-ft per year).

Extremes. Maximum discharge during year, 880 cfs Jan. 26 (gage height, 4.00 ft); no flow 

Jan. 5-24.

1941-56: Maximum discharge, 1,670 cfs Jan. 15, 1952 (gage height, 5.30 ft, present 

datum); no flow at times during 1949-56.

Remarks. Records good. Discharge measurements generally made four times a month. Small 

diversions above station for irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.1!

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1 

.1

.1

.1

.2 

.2

5.8

0.19

12

Nov.

0.2

.2

.2

.2

.2

.3

.3

.2

.2

.4

A£

.5

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

It

.1

.2

.2

7.1

0.24

14

Dec.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

,1

.1

.1

.1

.2

.2

.1

.1

.1

.1

.1

36

49

5 

.5

.2

.2

.2 

.2

94.8

3.06 isa

Jan.

0.1

.1

.1

.1

0

0.

0

o

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

56

299

1.4

.5

.5 

.4

436.2

14.1

865

Feb.

0.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

^1

, 1

.1

.1

.1

.1 

.1

.1

.1

5.0

0.17

9.9

Mar.

Q.l

 1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.3

.6

juZ

.7

.6

.5

.5

.4

.4

.4

.5

.5

.4

.4 

.5

.5

.5

.4

.4

10.8

0.35

21

Apr.

0.5

.5

.6

. 7

.6

.6

.6

.4

.4

.3

.4

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

. ^

72

.2 

.2

.2

.2

.2

9.5

0.32

19

May

0.2

.2

.2

.2

.2

.2

t j

72

.2

.2

.2

.1

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.2

.2 

.2

.2

.4

74

6.1

0.20

12

June

0.5

> 3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

~^Y

!i

.1

7.2

0.24

14

July

0.1

 1

.1

.1

.1

.1

.1

.1

.2

.2

.1

.2

.3

.3

.1

.1

.2

.5

1

.9

.7

.6

.6

.6

.6 

.6

.6

.6

.6

.6

12.l'

0.39

24

Aug.

0.6

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

72

.2

.2

.2

.2

.1

.1

8.3

0.27

16

Sept.

Oil

.1

.'l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.2

.2

.2

.2

.3 

.3

.3

.4

4.9

0.16

9.7

Calendar year 1955 : Max 49 Mln 0 Mean 0.50 Ac-ft 363

Water year 1955-56 : Max 299 Mln 0 Mean 1.66 Ac-ft 1.2OO

Peak dlBchartte (base. 50 cfs). Dec. 24 (8:30 D.ro. ) 265 efs (2.46 ft): Jan. 26 (10 D.ro.) 880 efs

(4.00 ft).
SANTA YNEZ RIVER BASIN 155

Zanja Cota near Santa Ynez, Calif.

Location. Lat 34°35'13", long 120°05'40", In Canada de los Plnos Grant (on boundary), on 

right bank 300 ft upstream from Mitchell Ranch road, 0.4 mile upstream from mouth, and 

2.0 miles southwest of Santa-Ynez, Santa Barbara County.

Drainage area. 13.4 sq ml.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 470 ft (from topographic map).

Extremes. Maximum discharge during year, 53 cfs Jan. 26 (gage height, 4.02 ft); no flow 

Sept. 12, 13.

1954-56: Maximum discharge, that of Jan. 26, 1956; no flow Sept. 12, 13, 1956.

Remarks. Records good. Discharge measurements generally 

al diversions above station.

3e at least once a week. SeverRatlng table, water year 1955-56 (gage height, In feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Apr. 10, 11, May 22-25, Sept. 12)

0.0 

.1 

.2 

.5 

.5 

.8

1.0

.1

.4

.6

1.4

3.1

4.4

1.5 

1.8 

2.2 

2.6 

3.0 

3.4

9.4 

14 

28 

34 

4O 

46

Discharge, in cubic feet per second, water year October 1955to September 1956

Day

1

Z

3

4

5

6

7

8 

9 

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.1

1.5

1.6

1.0

.9

.8

78

.8 

.8 

.8

1.0

.8

1.5

1.8

1.9

1.9

1.1

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.4

1.9

1.6

1.0

.9

.9

2.9

37.7

1.22

75

Nov.

1.4

2.1

2.1

2.2

2.3

2.0

1.8

1.1

T7T 

1.1

1.1 1.1

1.3

2.8

T3

2.0

2.0

2.2

2.2

2.O

2.6

2.2 

2.2

2.2

2.2

2.3

2.5

2.4

2.4

2.4

59.3

1.98

118

Dec.

2.5

2.4

2.4

2.6

2.4

2.4

2.4

2.3 

tt 

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.4 

2.4

8.3

8.9

7.2

3.7

3.0

2.9

2.9

3.0

94.0

3.03

186

Jan.

2.9

2.9

2.9

2.8

2.8

2.9

2.8

ft 

2.7

2.7

2.7

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8 

2.8

2.8

15

46

T9

6.4

4.4

4.0

5.4

167.3

5.40

332

Feb.

4.0

37S

3.4

3.3

3.2

3.2

3.0

3.0 

2.9 

2.9

2.8

2.8

2.7

2.8

2.7

2.8

2.8

2.9

2.9

2.9

2.9

2.9 

3.2

3.0

3.0

2.9

2.9

2.9

2.9

87.2

3.01

173

Mar.

2.9

T3

2.9

2.9

2.9

2.9

2.9

2.9 

2.8 

2.9

2.9

2.0

2.8

2.7

2.7

2.0

2.1

2.2

2.6

2.0

1.3

.4

'.4

1.1

.8

.6

.7

1.7

1.2 1 8

63.3

2.04

126

Apr.

1.6

1.3

1.8

2.2

1.5

1.4

2.0

1.2 

1.6 

1.2

1.1

3.0

T3

2.1

2.4

2.6

2.5

2.4

2.2

2.0

1.8

1.8 

1.7

1.1

o:

1.4

2.3

2.3

2.4

2.4

56.7

1.89

112

May

2.6

2.6

2.6

2.5

2.5

2.5

2.4

2.4 

3.1 TTe

2.5

2.5

2.4

2.4

2.3

2.2

2.2

1.4

.5

1.5

.5

It

.1

.1

.6

1.2

1.1

1.7.

1.7

1.4

54.4

1.75

108

June

1.1

1.1

1.1

1.3

1.1

l.S

T72- 2.0

.2 

.4

.6

.3

.4

.6

.6

.3

.3

.3

.3

.4

.5

.5 

.6

1.1

1.0

.6

.1

.1

.1

.5

20.5

0.68

41

July

-75 1.0

.4

.6

.6

.6

.7

.7 

.8 

.5

.8

.7

.7

.3

^1

.7

.7

.7

.8

.8

.4

.1 

.1

.1

.1

.1

.1

.1

.4

.5

.7

15.7

0.51

31

Aug.

0.8

.7

.4

.7

.8

.8

.8

.8 

.5 

.3

.6

1.0

1.0

1.1

T7I

1.0

1.0

1.0

1.0

.7

7*

.2

.1

.2

.8

.7

.5

.7

.6

.2

20.3

0.65

40

Sept.

0.6

.7

.5

.6

.8

.8

.8

.3 

.1 

.3

.4

O

0

.1

.6

.8

.9

~79 1.0

.9

.9

.9 

.9

.9

.9

.9

.9

.8

.4

.1

18.7

0.62

37

Calendar year 1955: Max 15 Mln O.I Mean 1.82 Ac-ft 1,320

Water year 1955-56: Max 46 Min O Mean 1.90 Ac-ft 1,380
156 SANTA YNEZ RIVER BASIN

Santa Ynez River at Grand Avenue, near Santa Ynez, Calif.

Location. Lat 34 0 35'05", long 120°06'00n , In Canada de los Plnos Grant (on boundary), on 

downstream side of left bank abutment of bridge, 0.2 mile below Zanja Cota and 2^ miles 

southwest of Santa Ynez, Santa Barbara County.

Drainage area. 513 sq ml.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 450 ft (from topographic map).

Extremes. Maximum discharge during year, 820 cfs Jan. 27 (gage height, 4,00 ft); minimum 

dally, 0.3 cfs Nov. 9, 10, 16-20, Sept. 15.

1954-56: Maximum discharge, that of Jan. 27, 1956; no flow July 30, Aug. 13-30, 

Sept. 9, 10, 1955.

Remarks. Records good. Discharge measurements generally made three or more times a 

month. Plow regulated by Jameson Lake, Gibraltar and Cachuma Reservoirs (see p.146, 

147,152). Water diverted out of basin from Jameson Lake and Gibraltar and Cachuma 

Reservoirs to cities of Montecito, Santa Barbara and Goleta for municipal supply. Some 

water for irrigation pumped from wells along banks of river in valley upstream.

Rating table, water year 1955-56 (gage height, In feet, and discharge.

In cubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 28, Dec. 25-27, 

Jan. 27 to Mar. 1, Mar. 7-9, Apr. 24-25)

1.5

1.6

1.7

1.8

1.9

2.0

0.3 

.8 

1.8 

3.4 

5.6 

8.9

2.2 

2.4 

2.7 

3.0 

3.4

19

35

79

152

315

Discharge, In cubic feet per second, water year October 195S to September 1956

Day

1

2

3

4 

5

6 

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.0

1.2

1.2

.9 

.9

.9 

.9

.9

.9

.9

.9 

.8

.9

1.2

1.2

1.1

.8

.8

.8

.8

.7

.6

.8

.8

.8

1.0

1.0

.7

.5

.5

1.5

27.7

0.89

55

Nov.

0.7

1.1

.8

.9 

.9

.8 

.8

.4

tr

.5 

.4

.4

.6

.4

.3

.3

.3

.3

.3

.5

.5

.8

.9

1.2

1.6

1.8

2.1

2.3 

2.5

25.0

0.83

50

Dec.

2.8

2^5

2.8

3.0 

3.0

2.8 

2.5

2.5

2.5

2.8

2.8 

2.5

2.8

2.8

2.8

3.0

2.8

2.8

3.0

3.6

4.4

4.6

4.6

71

292

43

20

7.1

5.8

5.6 

5.4

519.6

16.8

1,030

Jan.

5.1

4.6

4.2

4.2 

4.0

e4.0

4.2

4.2

4.2 

4.2

4.2

4.0

4.0

4.0

4.2

4.4

4.2

4.0

4.0

4.0

4.0

4.0

43

277

200

36

17 

11

11

694.5

22.4

1,380

Feb.

8 7*49

e!s

5.8 

5.6

5.4

5.6

5.8

5.6

5.6

5.6 

5.8

5.8

5.8

5.8

5.6

5.4

5.1

4.9

479

5.1

5.1

5.6

5.8

5.6

5.4

5.6

5.6

5.8

166.5

5.74

330

Mar.

5.4

5.1

5.4

5.1 

5.4

5.6 

6.2

6.2

6.2

6.2

It!

4.9

4.6

4.6

4.0

4.2

4.4

4.4

4.0

3.8

2.8

2.5

2.5

3.4

3.2

2.8

3.2

3.4

3.4

3.4

137.9

4.45

274

Apr.

4.0

4.0

4.4

4.9 

4.0

4.0 

4.6

4.0

4.0

ILL

6.5 

17

14

6,8

5.6

5.8

5.8

8.6

27

19

20

19

22

47

24

27

18

12

10 

9 3

366.0

12.2

726

May

8.9

8.5

8.2

7.8 

7.1

6.8 

6.8

7.1

9,3 77§

6.8 

6.5

6.5

6.5

6.5

6.5

5.8

5.1

5.6

576

4.6

4.4

4.2

4.2

4.2

4.2

4.2

4.2

4.4 

4.4

4.9

185.6

5.99

368

June

4.2

4.4

6.7

11

14

13 

10

7.8

4.9

6.0

7.8 

7.7

7.8

5.1

4.9

4.2

4.0

4.0

4.0

4.6

4.0

4.0

3.8

4.6

4.0

3.6

2.3

2.1

ill

168.1

5.60

333

July

3.0

375

2.8

2.3 

1.9

2.1 

1.6

2.3

2.2

2.0

2.2 

1.8

2.1

2.2

1.5

1.1

1.4

1.5

j.^0 Tto"

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.3

1.3 

1.3

1.3

52.9

1,71

105

Aug.

1.3

1.2

1.2

fct

1.4 

1.4

1.5

1.3

.8

.5 

.8

.9

.8

.9

1.2

.9

.9

1.2

1.0

.7

.6

.5

75" ^4

.9

1.0

.8

.8

'.1

29.9

0.96

59

Sept.

0.6

.7

.9

.8 

.9

.8 

.9

.8

.5

.5

.5 

.5

.5

.4

^1

.9

.8

.7 ~rs" 1.1

.9

.8

1.0

1.0

1.0

1.0

.9

1.1

.8

 6

23.1

0.77

46

Calendar year 1955: Max 292 Mln 0 Mean 5.34 Ac-ft 3,870

water year 1955-56: Max 292 Mln 0.3 Mean 6.55 Ac-ft 4,760
SANTA YNEZ RIVER BASIN 157

Santa Ynez River at Solvang, Calif.

Location (revised).--Lat 34°35'05", long 120°08'35", in San Carlos de Jonata Grant, on 

downstream side of right abutment of Mission Bridge, 25 ft downstream from Alisal 

Creek and 0.9 mile south of Solvang, Santa Barbara County.

Drainage area. 579 sq mi.

Records available . October 1928 to November 1936, June 1937 to November 1940 (irrigation 

seasons only), October 1946 to September 1956.

Gage . Water-stage recorder. Altitude of gage is 350 ft (from topographic map). Various 

cTatums used during period of record. July 29 to Sept. 30, 1953, auxiliary water-stage 

recorder 750 ft upstream at different datum. Oct. 1, 1953, to Jan. 26, 1955, waterstage recorder on center bridge pier at same datum.

Extremes.--Maximum discharge during year not determined, occurred Dec. 25 (gage height, 

7.18 ft); no flow Oct. 1 to Nov. 12, Nov. 15-26, July 24 to Sept. 30.

1928-36, 1946-56: Maximum discharge, 37,000 cfs Jan. 15, 1952 (gage height, 14.80 

ft), from rating curve extended above 10,000 cfs by logarithmic plotting; no flow for 

several months during 1948-56.

Remarks. Records good except those for period of no gage-height record, which are poor. 

Discharge measurements generally made three or more times a month. Plow regulated by 

Jameson Lake, Gibraltar and Cachuma Reservoirs (see p.146,147,152 ). Water diverted 

out of basin from Jameson Lake, and Gibraltar and Cachuma Reservoirs to cities of 

Montecito, Santa Barbara, and Goleta for municipal supply. Some water for irrigation 

pumped from wells along banks of river in valley upstream.

Hating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second)

(Shifting-control method used Nov. 27-30, Dec. 15 to Jan. 25, Mar. 29 

to Apr. 11, Apr. 15, 16, May 4-9, May 11 to June 7, July 13-24)

Oct. 1 to Jan. 4 Jan. 5 to Apr. 8 Apr. 8 to Sept. 3O

1.05

1.1

1.2

1.3

1.4

0

.1

.9

2.2

4.3

1.6 

1.8 

2.1 

2.5 

3.2

46

102

275

2.4 

2.6 

2.9

5.7 

9.4

14

27

57

102

165

310

515

735

.2 

.5

1.0 

1.8

3.0 

3.2 

3.4

3.7 

4.0

4.0

8.4

14

30

58

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

O

0

0

Nov.

0

.0

0

0

0

0

0

O

0

O

0

0

.1

.1

0

0

0

0

0

0

0

0

0

O

O

0

.3

.7 1.1

l._5

3.6

0.12

7.1

Dec.

2.0

2.0

2.2

3.0

2.8

3.0

2.8

2.8

2.6

2.2

2.8

3.0

3.0

3.0

3.0

3.0

2.8

2.1

2.1

2.1

2.0

2.1

2.1

a400

al£OO_

a450

14O

75 

43

32

41

2,239.5

72.2

4,440

Jan.

'28

24

22

18

17

16

15

14

13

11

11

11

11

11

11

12

10

8.6

876

8.6

9.0

9.0

9.0

9.0

112

708

148

139 

82

60

54

1,919.8

61.9

3,810

Feb.

40

32

28

26

26

24

27

23

21

19

19

18

17

16

16

15

15

14

13

12

12

12

26

25

20

18

17

17 

17

585

20.2

1,160

Mar.

15

14

13

12

12

12

12

15

14

14

13

12

11

11

10

9.4

9.0

8.6

8.6

8.6

8.2

7.0

6.8

6.6

6.0

6.6

6.3

6.6 

6.3

6.0

6.6

307.2

9.91

609

Apr.

7.4

7.4

7.8

6.3

6.0

6.3

6.3

5.1

4.7

4.5

28

29

22

15

12

11

10

9.6

25

18

21

19

20

37

29

50

3T

25 

20

18

514.2

17.1

1,02O

May

15

14

14

14

14

14

12

12

29

23

17

15

14

12

12

11

11

10

9.1

8.8

8.3

8.3

8.3

7.4

7.0

6.4

6.2

§.,8 

6.0

6.0

5.8

356.4

11.5

707

June

5.6

6.0

6.8

8.5

10

12

10

9.0

7.4

7.0

7.4

7.4

7.4

6.4

5.4

5.2

4.8

4.1

3.9

3.8

3.7

3.9

4.3

5.4

5.0

3.1

2.5

2.1 

1.8

1.8

171.7

5.72

341

July

1.8

1.7

1.6

1.8

1.5

1.1

1.2

1.5

1.2

1.0

.8

.8

.9

1.0

1.1

.8

.6

.4

.2

.1

.2

.4

.Z

O

0

0

0

O 

0

0 

0

21.9

0.71

43

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1,OOO Min 0 Mean 11.5 Ac-ft 8,320

Water year 1955-56: Max 1,OOO Min 0 Mean 16.7 Ac-ft 12,140

a No gage-height record; discharge estimated on basis of 2 discharge measurements and records for 

nearby stations.
158 SANTA YNEZ RIVER BASIN

Santa Ynez River at Buellton, Calif.

Location. Lat 34°36'25", long 120°11'45", in Nojoqui Grant (near boundary), at midstream 

pier of old highway bridge, 75 ft downstream (revised) from Nojoqui Creek, 0.1 mile 

downstream from U. S. Highway 101, and 0.5 mile south of Buellton, Santa Barbara 

County.

Drainage area. 594 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 330 ft (from topographic map). Prior to 

cTct. 1, 1955, at datum 2 ft higher.

Extremes. Maximum discharge during year, 4,400 cfs Dec. 25 (gage height, 5.2 ft, estimated), from rating curve extended above 1,800 cfs by logarithmic plotting; maximum 

gage height, 6.34 ft Dec. 25 (backwater from road construction); no flow Oct. 1 to 

Nov. 28, July 21 to Sept. 30.

1954-56: Maximum discharge, that of Dec. 25, 1955; no flow during several months 

of each year.

Remarks. Records good below 2,000 cfs and fair above. Discharge measurements or observations of no flow generally made three or more times a month. Plow regulated by. 

Jameson Lake, Gibraltar and Cachuma Reservoirs (see p. 146,147,152 ). Water diverted 

out of basin from Jameson Lake and Gibraltar and Cachuma Reservoirs to cities of 

Montecito, Santa Barbara and Goleta for municipal supply. Some water for irrigation 

pumped from wells along banks of river in valley upstream.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

In cubic feet per second)

(Shifting-control method used Dec. 7-27, Jan. 29 to Feb. 2, 

May 28 to June 7, June 15-24, July 1-14)

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.1

0

.1

.5

1.4

3.2

6.4

11

17

2.3 

2.5 

2.7 

2.9 

3.2 

3.5 

4.0 

4.2

36

66

111

182

355

630

1,330

1,700

Discharge, in cubic feet per second, water year October 1955 to September 1956,

Day

1

2

3

4

5

6

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0 

0

0

a.l 

a. 5

0.4

0.01

0.8

Dec,

aO.5

a. 6

a. 6

a. 8

a. 8

al.O

1.0

1.0

.9

.8

.9

.8

.8

.9

.9

1.0

1.0

1.0

1.0

1.0

1.0

.8

.5

600

1.520

646 

202

77

50 

30

54

3,198.6

103

6,340

Jan.

a30

a25

a20

16

14

12

12

11

11

10

9.5

9.0

7.6

8.0

8.5

9.0

8.5

8.5

8.5

8.5

8.5

6.8 

£78

6.8

141

1.120 

685

178

98 

72

74

2,643.5

85.3

5,240

Feb.

64

63

61

50

37

34

35

32

28

26

25

23

23

23

23

20

19

19

19

18

18

18 

26

31

26

24 

22

22

21

850

29.3

1,690

Mar.

20

20

20

19

19

17

16

17

19

18

18

16

15

13

13

12

11

11

10

9.0

7.6

6.0

5.3

5.3

5.7

5.7 

4.9

4.6

3.7

5*Q

"

367.8

11.9

730

Apr.

3.7

4.6

3.5

3.5

2.6

2.6

2.0

274

2.6

3.2

19

28

20

15

12

12

11

11

18

15

16

16

17

27

24

||

29

23 

21

466.7

15.6

926

May

17

17

17

15

13

12

11

13

33

51

19

18

17

15

13

12

12

10

9.5

9.0

9.0

7.2 

6.4

6.8

7.2

7.2 

8.0

7.2

5.3 

4.3

5.5

378.6

12.2

751

June

3.0

3.2

3.2

3.2

3.5

111

3.2

a3

a3

as

a2

a2

2.0

1.8

1.6

1.6

1.8

2.0

1.6

1.5

1.4

1.2 

1.2

1.6

1.6

1.4 

1.1

1,0

l!o

62.5

2.08

124

July

T76" TO

.9

.8

.7

.6

.5

.5

.5

.4

.5

.4

.4

.4

a. 3

a. 2

a.l

.1

.1

.1

0

0 

0

0

0

0 

0

0

0 

0

0

9.5

0.31

19

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1,520 Mln 0 Mean 11.3 Ac-ft 8,210

water water year year 1955-56: isao-sb: Max Max 1,520 J..5ZO Min Mln 0 O Mean Mean 21.8 Zl.B Ac-ft Ac-rt 15,820 15,8ZO

a No gage-height record; discharge estimated on basis of 9 discharge measurements, weather record 

and records for nearby stations.
SANTA TCIEZ RIVER BASIN 159

La Zaca Creek at Buellton, Calif.

Location (revised). La t 34°36<50", long 120°11'30", in San Carlos de Jonata Grant, on 

right bank at culvert on State Highway 150 in Buellton-, Santa Barbara County, 1 mile 

upstream from mouth.

Drainage area. 39.5 sq mi.

Records available.--January 1941 to September 1956.

Oage.--Water-stage recorder. Altitude of gage is 340 ft (from topographic map).

Average discharge. 15 years, 0.26 cfs (188 acre-ft per year); median of yearly mean discharges, o.oS cfs (22 acre-ft per year).

Extremes. Maximum discharge during year, 23 cfs Jan. 26 (gage height, 3.61 ft); no flow 

during most months.

1941-56; Maximum discharge, 874 cfs Mar. 3, 1941, from rating curve extended above 

300 cfs on basis of velocity-area study; maximum gage height, 6.80 ft Mar. 4, 1941; no 

flow during most of each year.

Remarks. Records fair. Discharge measurements or observations of no flow generally made 

twice a month. Waste water from large cafe nearby not included in these records when 

there is no natural flow.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

5

0

0

0

0

0

0

0

0

0

0

nJl

0

0

0

0

0

0

0

0

0

0

0 

0

0 

0

0

0

0

0.1

0.003

0.2

Dec.

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

if

.3 

0

0

0

0

0

1.1

0.04

2.2

Jan.

0

ff

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

4.1

it

2.8

0

0

0

36.9

1.19

73

Feb.

0

0

0

Mar.

0

0

0

Apr.

§

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0.1

0.003

0.2

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1.9 Mln o Mean 0.01 Ao-ft 8.4 

Water year 1955-56: Max la Mln o Mean 0.10 Ao-ft 76

Peak discharge (base. 10 cfa). Dec. 24 (1 p.m.) 10 ofs (3.45 ft)j Jan. 26 (4 p.m.) 23 ofs 

(3.61 ft).
160 SANTA YNEZ RIVER BASIN

Santa Ynez River near Buellton, Calif.

Location.--Lat 34°36'50", long 120e 14i30", in Santa Rosa Grant, on left bank 0.5 mile

 downstream from Canada de los Palos Blancos and 3 miles west of Buellton, Santa Barbara 

County.

Drainage area. 668 sq mi.

Records available. June 1948 to September 1952 (irrigation seasons only), October 1952 to 

September 1956.

Page. Water-stage recorder. Altitude of gage is 250 ft (from topographic map). Prior to

 Tpr. 25, 1950, at site 200 ft downstream at different datum.

Extremes. Maximum discharge during year not determined, occurred. Dec. 25 (gage height,

 6TSB~ft, from floodmarks); no flow Oct. 1, June 24-30, July 18 to Sept. 30.

1952-56: Maximum gage height, that of Dec. 25, 1955 (discharge not determined); no 

flow for several days each year.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

DTscharge measurements generally made once a week. Plow regulated by Jameson Lake, 

Gibraltar and Cachuma Reservoirs (see p.146,147,152 ). Water diverted out of basin 

from Jameson Lake, and Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa 

Barbara, and Ooleta for municipal supply. Pumping from wells along river for irrigation also affects surface flow at this station.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

in cubic feet per second)

(Shifting-control method used Oct. 13 to Dec. 23, Dec. 31 to 

Jan. 25, Feb. 8, Mar. 19 to Apr. 14)

0.4 

.5 

.6 

.7 

.8 

.9

1.0

.1 

.2

.5 

1.0 

1.8 

2.8

1.2 

1.4 

1.6 

2.0 

2.5 

3.0 

3.5

5.9

11

18

39

82

150

280

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac-ft

Oct.

aO 

a.l

a.l

a.l

a.l

.1

.1

.1

.2

.2

.2

.3

.4

.4

.4

.5

.5 

.5

.5

.5

, 6

.6

.6

.6

.6

.6

.6 

.6

.6

.6

 6

11.9

0.38

24

Nov.

0.7 

.7

.7

.7

.7

if

.6

.6

.6

.7

.7

.8

.9

.8

.9

.9 

.9

.9

1.0

1.0

1.0

1.1

1.1

1.1

:u2

1.2 

1.3

1.2

1.2

26.4

0.88

52

Dec.

TTT I'.Z

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.6 

1.6

1.6

1.6

1.7

1.7

1.8

a500

al.600

a600

a200 

120

73 

53

65

3,245.1 105>

6,440

Jan.

38 

28

22

20

22

22

20

18

15

14

14

15

16

15

15

14

14 

14

14

14

14

13

12

12

91

al.100

aSOO 

a250

110 

32

36

2,734

88.2

5,420

Feb.

ft

55

49

46

42

42

42

38

36

36

35

35

33

31

29

27 

27

27

28

27

27

33

38

31

28

27 

28

30

1,059

36.5

2,100

Mar.

27 

24

24

24

22

23

24

24

24

22

22

22

19

19

18

16

a!5 

a!3

11

11

10

9.3

8.5

7.2

5.5

5.2

5.1 

5.1

4.5

3.9

OjQ

471.3

15.2

935

Apr.

3.4 

4.3

3.6

2.0

1.5

1.4

1.1

1.1

.9

-v§

4.5

29

18

14

12

11

9.9

8.5

15

15

15

15

16

22

26

44

ft

27 

24

425.0

14.2

843

May

19 

17

17

15

14

14

13

13

28

29

22

19

18

17

14

12

10 

9.0

8.3

8.3

7.6

7.2

6.5

5.7

5.0

4.5

4.2 

4.2

3.9 

3.0

g - a

371.2

12.0

736

June

2^3 

2.0

1.8

1.7

1.6

1.6

1.5

July

0.3 

.3

.4

Aug.

1 , ^-\ , '

i.?; ,4

1.2

1.2

1.2

1.1

1.1

1.1

1.0

1.0 

1.0

.9

.8

.3

.3

.3

0

0

0

0 

0

0 

0

27.6

0.92

55

.4

.3

.2

.2

.2

.2

.2

.1 

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

5.2

0.17

10

0

0

0

Sept.

0

0

0

Calendar year 1955 : Max 1 60O Mln o Mean 12.3 Ac-ft 8,920

Water year 1955-56 : Max 1,60O Min 0 Mean 22.9 Ac-ft 16,620

a No gage-height record} discharge interpolated or estimated on basis of 6 discharge measurements 

and records for station at Buellton.
SANTA YNEZ RIVER BASIN 

Santa Ynez River at Santa Rosa Dam site, near Buellton, Calif.

161

Location.--Lat 34°36'35", long 120°18'15", in Santa Rosa Grant, on left bank 1 mile dovmstream from Santa Rosa Creek and 6-5 miles west of Buellton, Santa Barbara County.

Drainage area. 748 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 200 ft (from topographic map).

Extremes. Maximum discharge during year not determined, occurred Dec. 25 (gage height, 

6.84 ft, from floodmarks); no flow Oct. 1 to Dec. 23, June 28 to Sept. 30,

1954-56: Maximum gage height, that of Dec. 25, 1955 (discharge not determined); no 

flow during several months of each year.

Remarks. Records good below 100 cfs, fair between 100 and 300 cfs and for periods of no 

gage-height record, and poor above 300 cfs. Discharge measurements generally made 

three times a week during periods of flow. Flow regulated by Jameson Lake, Gibraltar 

and Cachuma Reservoirs (see p. 146,147,152). Water diverted out of basin from Jameson 

Lake and Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa Barbara, and 

Goleta for municipal supply. Some water for irrigation pumped from wells along banks 

of river in valley upstream.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 25 to Feb. 14)

.9

1.1

0

.2

.9

2.6

5.7

10

22

1.4 

1.8 

2.3 

2.8 

3.5 

4.0 

5.1

50

107

225

380

690

990

1,880

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

290

1.S40

690

349

124

70

51

54

3,468

112

6,880

Jan.

40

33

28

26

25

24

21

20

19

18

16

17

17

16

16

16

16

16

16

17

16

15

14

12

79

633

566

220

143

109

107

2,331

75.2

4,620

Feb.

95

80

71

66

57

50

50

49

46

43

41

40

37

36

36

35

34

34

34

33

32

32

34

47

41

38

34

33

31

1,289

44.4

2,560

Mar.

29

28

28

27

26

25

25

25

25

25

24

24

21

21

18

18

17

17

17

16

14

12

12

9.5

9.0

8.2

8.2

7.3

6.9

5.7 

5.3

554.1

17.9

1,100

Apr.

5.3

5.3

5.3

4.6

4.0

3.4

3.1

2.9

2.9

3.1

a3.5

a!5

a20

a20

a20

14

12

10

10

14

14

14

15

16

27

34

30

27

439.4

14.6

872

May

22

19

18

17

16

15

14

15

22

11

24

22

20

18

17

14

13

11

10

10

9.0

9.0

8.6

8.2

7.7

6.9

6.5-

5.7

5.3 

5.3

424.8

13.7

843

June

3.7

3)1

2.6

2.2

2.0

2.0

1.3

1.1

1.0

1.0

.9

.9

.9

.9

.8

.7

.6

.5

.4

.4

.4

.3

.3

.2

.2

.1

.1

o

0 

0

28.6

0.95

57

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1,840 Min 0 Mean 12.3 Ac-ft 8,900

Water year 1955-56: Max 1,840 Min 0 Mean 23.3 Ac-ft 16,930

a No gage-height record; discharge estimated on basis of 3 discharge measurements, weather records, 

and records for nearby stations.
162 SANTA YNEZ RIVER BASIN

Santa Ynez River at Cooper's Reef, near Lompoc, Calif.

Location.--Lat 34°36'48", long 120°21'20", near boundary of Canada de Salsipuedes Grant, 

on right bank 0.6 mile upstream from Canada de la Vina and 6 miles east of Lompoc, 

Santa Barbara County.

Drainage area. 755 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 200 ft (from topographic map).

Extremes. Maximum discharge during year not determined, occurred Dec. 25 (gage height, 

7.38 ft); minimum daily, 0.2 cfs on many days during periods Oct. 1 to Dec. 8, Aug. 31 

to Sept. 22.

1954-56: Maximum gage height, that of Dec. 25, 1955 (discharge not determined); minimum daily discharge, 0.2 cfs at times in 1954-56.

Remarks. Records good except those above 150 cfs, which are fair. Discharge measurements 

generally made one or more times a week. Flow regulated by Jameson Lake and Gibraltar 

and Caohuma Reservoirs (see p. 146,147,152). Water diverted out of basin from Jameson 

Lake and Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa Barbara, and 

Goleta for municipal supply. Some water for irrigation pumped from wells along banks 

of river in valley upstream.

Rating table, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second)

(Shifting-control method used Oct. 1-9, Dec. 27 to Jan. 6, Feb. 5-7, Mar. 2-4, 

6-27, Mar. 29 to Apr. 5, Apr. 15, 16, May 4, 5, June 17 to Aug. 10)

1.43

1.5

1.6

1.7

1.8

0.2 

.5 

1.4 

3.2 

6.2

1.9

2.0 

2.2 

2.5 

3.0

74

170

3.5 

4.0 

5.0 

5.6

310

525

1,150

1,670

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.2

.2

.5

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2 

.2

.2

7.7

0.25

15

Nov.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3 

.3

8.1

0.27

16

Dec.

0.4

.3

.3

.4

.3

' .3

4.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

1.6

1.660

507

284

128

65 

46

54

2,772.9

89.4

5,500

Jan.

58

37

27

25

25

25

21

19

16

16

16

15

15

15

15

15

15

15

14

14

14

14

14

13

15

468

534

224

146

130 

124

2,147

69.3

4,260

Feb.

103

84

76

76

73

71

59

51

43

37

37

35

36

37

40

35

28

27

28

27

26

26

29

41

39

38

37

35

34

1,308

45.1

2,590

Mar.

28

29

29

28

26

26

26

27

26

26

26

25

25

22

20

20

20

18

14

12

13

11

11

11

9.7

8.2

5.1

3.4

 ' 

602.8

19.4

1,200

Apr.

3.2

3.4

2.6

2.8

2.0

2.2

1.6

1.6

1.3

1.3

4.3

19

22

23

20

19

14

11

11

15

13

14

16

19

26

32

49

40

32 

29

450.3

15.0

893

May

25

22

19

16

18

20

20

25

31

40

34

28

26

24

23

21

20

18

17

17

16

14

12

12

9.2

7.4

8.7

6.2

5.4 

3.9

 z 7

riLt 7

562.5

18.1

1,120

June

2.6 iTe

1.4

1.6

1.2

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.0

1.0

.9

1.0

1.0

1.0

.8

.8

.7

.6

.6

.6

.6

.5

.5

.4

29.4

0.98

58

July

0.4

.4

.4

.4

.4

.4

.4

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4 

.4'.4

12.8

0.41

25

Aug.

0^4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3 

.3

-* 

11.7

0.38

23

Sept.

0.2

.5

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3 

.3

7.1

0.24

14

Calendar year 1955: Max 1,66O Min o.2 Mean 9.S6 Ac-ft 7,140

Water year 1955-56: Max 1,660 Min o.2 Mean 21.6 Ac-ft 15,710
SANTA YNEZ RIVER BASIN 163

Santa Ynez River below Santa Rita Creek, near Lompoc, Calif.

Location. Lat 34°38 "00", long 120°23'30", on boundary of Santa Rita Grant, on right bank 

at white shale outcrop, half a mile downstream from Santa Rita Creek and 3f miles east 

of Lompoe, Santa Barbara County.

Drainage area. 781 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 150 ft (from topographic map).

Extremes. Maximum discharge during year not determined, occurred Dec. 25 (gage height, 

10.66 ft, from floodmarks); minimum daily, 0.1 cfs Oct. 6-15, 19-30.

1954-56: Maximum gage height, that of Dec. 25, 1955 (discharge not determined); 

minimum daily discharge, 0.1 cfs Sept.-3-18, Oct. 6-15, 19-30, 1955.

Remarks. Records fair except those above 100 cfs, which are poor. Discharge measurements 

generally made twice a week. Flow regulated by Jameson Lake, Gibraltar and Cachuma 

Reservoirs (see p.146,147,152). Water diverted out of basin from Jameson Lake and 

Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa Barbara, and Goleta for 

municipal supply. Some water for irrigation pumped from wells along banks of river in 

valley upstream.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second)

(Shifting-control method used Oct. 1-11, Nov. 13-14, Dec. 29 to Jan. 25, 

Feb. 2 to Mar. 15, Mar. 23-28, Apr. 25 to May 6, May 21, 25)

Oct. 1 to Dec. 24 Dec. 24 to Sept. 30

1.3

1.4

0.1 

.5

1.6

1.7

1.8

1.9

2.0 

2.2

1.6 

2.5 

5.5

2.4 

2.7 

3.0 

3.5 

4.0 

4.5

10

20

35

74

128

209

5.0 

6.0 

7.0 

8.2

315

600

1,040

1,720

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

 

0.2

.2

.2

.2

.1

TT

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

4.0

0.13

7.9

Nov.

0.2 ~~72~

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

73

.3

.3

.3

.2

.2

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.8

0.23

13

Dec.

0.3

.3

.3

.3

.3

.3

.2

72

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

13

1.700

522

310

100

68

60

2,840.8

91.6

5,630

Jan.

60

41

34

30

28

26

25

24

24

23

22

20

17

18

18

17

17

16

IS

18

18

18

19

18

84

619

728

2~6T»

153

117

102

2,638

85.1

5,230

Feb.

85

81

90

82

75

70

60

54

51

50

50

49

47

49

51

50

45

45

40

36

35

36

40

53

51

46

44

40

37

1,542

53.2

3,060

'Mar.

36

11

37

37

35

33

32

30

29

30

30

30

29

28

24

19

18

18

17

15

12

11

12

10

8.6

8.1

7.3

6.2

4.8

3.7

5.4

651.1

21.0

1,290

Apr.

3.5

3.7

3.5

3.0

2.6

2.2

2.1

1.8

1.7

1.6

2.4

7.5

20

18

16

14

15

14

8.8

8.0

8.8

8.6

12

13

17

28

54

44

32

£5

391.8

13.1

777

May

20

16

13

13

12

11

12

13

20

32

34

28

25

22

22

21

18

16

12

9.4

8.8

8.1

7.3

6.4

5.1

4.0

4.0

4.0

4.0

3.7

3.1

427.9

13.8

849

June

2^6.

2.0

1.4

1.0

1.1

1.2

1.0

1.0

.8

.8

.8

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.4

.3

.3

23.6

0.79

47

July

~^2 0.2

.2

.2

.2

.2

.2

.2

tf

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

7.5

0.24

15

Aug.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.2

0.20

12

Sept.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.0

0.20

12

Calendar year 1955: Max 1,700 Mln 0.1 Mean 9.78 Ac-ft 7,080

Water year 1955-56: Max 1,700 Mln 0.1 Mean 23.3 Ac-ft 16,940
SANTA YWEZ RIVER BASIN

Salsipuedes Creek near Lompoc, Calif.

Location (revised) . Lat 34°35'20", long 120°24'25", in Canada de Salsipuedes Grant, on 

right bank at highway bridge on Jalama Road, 0.3 mile downstream from El Jaro Creek and 

4.5 miles southeast of Lompoc, Santa Barbara County.

Drainage area.--47.0 sq mi.

Records available. January 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 230 ft (from topographic map).

Average discharge.--15 years, 7.32 cfs (5,300 acre-ft per year); median of yearly mean 

discharges, 3.0 cfs (2,200 acre-ft per year).

Extremes.--Maximum discharge during year, 2,440 cfs Jan. 25 (gage height, 7.75 ft); mini- 

 mum 'daily, 0.1 cfs Oct. 5-14, 18-22, 24-28.

1941-56: Maximum discharge, 11,400 cfs Mar. 15, 1952 (gage height, 20.8 ft), from

rating curve extended above 2,200 cfs on basis of slope-area determination of peak flow;

no flow Sept. 19, 1955.

Remarks.--Records good except those for periods of no gage-height record, indefinite 

ITage-discharge relation, and discharge above 300 cfs, which are fair. Discharge 

measurements generally made 3 times a week Dec. 24 to June 13 and 3 times a month at 

other times. Small diversions for irrigation above station.

Revisions. WSP 1395: Drainage area.

Rating table, water year 1955-56, except period of Indefinite stage-dlscnarge

relation (gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Mar. 8, 9, 14, 16, 19, Apr. 16 to

July 5, July 11-26)

1.06

1.1

1.2

1.3

1.4 

1.7

0.1

33

67

160

360

690

1,100

1,560

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

~0.2

.2

.2

^1_

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

.1

.1

.1

.2

.1

.1

.1

.1

.1

.2

.2

.2

4.2

0.14

8.3

Nov.

~72 0.2

.2

.3

.3

.3

.3

.3

.3

.3

.4

.4

.9

~73 2.0

.3

.3

.3

.3

.3

.3

.3

.3

.2 

.2

.2

.2

.2

.2

.2

10.5

0.35

21

Dec.

0.2

.2

.2

.3

.3

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.9

1,180 

1,060

706

90

38

24

17

43

3,168.6

102

6,280

Jan.

17

14

11

10

11

11

9.4

8.2

7.2

6.2

5.8

5.3

4.5

475

4.9

5.3

4.9

4.5

4.5

4.5

4.9

4.5

4.9

4.5 

1,130

1,550

376

100

62

48

53

3,491.5

113

6,930

Feb.

39

32

27

25

24

22

18

15

14

12

12

14

15

14

13

12

11

12

11

11

11

11

50

28 

17

16

14

13

13

526

18.1

1,040

Mar.

13

12

12

11

11

9.4

9.4

8.0

7.2

8.0

8.5

8.8

8.2

8.8

7.5

6.2

6.5

6.5

6.7

6.2

5.8

5.B

6.2

6.2 

6.2

6.2

5.3

4.9

4.5

4.9

4.9

235.8

7.61

468

Apr.

4.5

4.5

4.1

4. 1

4.1

4.5

4.5

4.1

4.1

4.5

15

9.8

5.8

5.3

5.3

5.3

4.1

4.9

4.9

4.5

4.5

4.9

4.9

4.9 

4.9

~8.5 22

6.2

5.3

4.9

178.9

5.96

355

May

4.9

4.9

4.9

4.9

4.5

4.1

3.7

19

20"6.2

4.9

4.9

4.9

4.5

3.7

3.7

3.7

3.7

3.4

3.4

3.4

3.0

2.7

277 

3.0

3.0

3.0

3.0

3.0

2.7

2.7

150.1

4.84

298

June

2.4

?74

2.4

2.4

e2.4

e2.4

e2.4

e2.1

e2.1

e2.1

2.1

1.8

1.4

1.4

1.4

1.4

1.4

1.4

1.6

1.6

1.4

1.4

1.6

1.6 

1.6

1.4

1.2

172

1.2

1.2

52.4

1.75

104

July

1.2

T72

1.2

1.2

1.2

1

1

1

1

1

.9

.7

.7

.6

_._4

.6

.7

.7

.7

.7

.7

.7

.7

.6 

.5

.7

.7

.7

.9

.9

.9

25.7

0.83

51

Aug.

0.9

.7

.7

.7

.7

.7

.7

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.5

.5

.5 

.5

.5

.4

74

.4

.4

.4

16.9

0.55

34

Sept.

0.5

.4

.4

.4

.4

.4

.3

.2

72

.2

.2

.3

.4

.4

.3

.4

.3

.3

.2

.2

.2

.3

.3

.3 

.3

.3

.3

.3

.3

.3

9.3

0.31

18

Calendar year 1955: Max 1,180 Min 0 Mean 10.4 Ac-ft 7,510

Water year 1955-56.: Max 1,550 Min 0.1 Mean 21.5 Ac-ft 15,61o

Peak discharge (base. 10O cfs). Dec. 26 (12 ra.) 2,400 cfs (7.65 ft)j Jan. 25 (11:30 a.m.) 2,440 

cfs (7.75 ft).

e Stage-discharge relation indefinite; discharge estimated on basis of 2 discharge measurements 

and weather records.

Note.--No gage-height record Mar. 1O-13, 15, 17, 18, Apr. 15, July 6-10j discharge interpolated or 

estimated on basis of 12 discharge measurements, weather records, and engineers' notes.
SANTA YNEZ RIVER BASIN 165

Santa Ynez River at narrows, near Lompoc, Calif.

Location (revised). Lat 34°38'15", long 120°25'30", in Canada de Salsipuedes Grant, on 

left bank 0.5 mile upstream from State Highway 150, 1.9 miles east of Lompoc, 

Santa Barbara County, and 2.0 miles downstream from Salsipuedes Creek.

Drainage area. 790 sq mi.

Records available.--April 1947 to September 1952 (irrigation seasons only), October 1952 

to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 90 ft (from topographic map). Prior to 

Mar. 23, 1953, at site 200 ft upstream at different datum.

Extremes. Maximum discharge during year, about 6,100 cfs Dec. 25 (gage height unknown), 

estimated 'on basis of peak flow at station near Lompoc; no flow Oct. 1 to Dec. 23.

1952-56: Maximum-discharge, that of Dec. 25, 1955; no flow during several months 

each year.

Remarks.--Records good except those above 300 cfs, which are fair. Discharge measurements 

generally made 1 to 3 times weekly. Plow regulated by Jameson Lake and Gibraltar and 

Cachuma Reservoirs (see p. 146,147,152 ). Water diverted out of basin from Jameson Lake 

and Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa Barbara, and Goleta. 

Pumping from wells along river for irrigation also affects surface flow at this station.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

a650

a2,8QQ

al,050 

a600

171

89

71

97

5,528

178

10,960

Jan.

85

49

38

36

31

30

23

22

23

20

19

19

19

20

20

21

19

17

T§

19

20

20

20

18

6840

el, 550 

el, 200

e500

e300

165

153

5,334

172

10,580

Feb.

Hz" 128

101

94

87

78

73

71

63

58

58

58

58

54

50

48

44

43

41

45

43

43

84

70

59

53 

48

46

44

1,853

63.9

3,680

Mar.

43

40

39

38

38

34

34

34

34

34

33

33

32

31

31

a28

a27

a26

a25

a23

a21

a20

a!8

a!6

a!4

13 

12

12

10

9.5

9_4Jl

811.6

26.2

1,610

Apr.

9.1

8.8

8.4

8.4

7.7

7.1

6.0

6.0

5.7

5.2

8.2

17

16

18

18

15

15

13

11

8.4

8.8

9.5

10

12

13

28 

32

38

29

26

418.3

13.9

830

May

21

18

16

15

14

13

13

15

32

vs

29

26

23

20

20

18

16

15

15

14

12

12

12

10

8.8

8.1 

7.7

7.7

6.3

4.9

4^5

473.0

15.3

938

June

4.3

378

3.4

3.4

3.2

2.8

2.5

2.3

2.0

1.9

1.7

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

al.3

al.3

1.2

1.2

1.1

1.0 

.9

.9

.9

_ !

53.7

1.79

107

July

0.8

.7

.6

.5

.4

.4

.4

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4 

.4

.4

.4

.2

T3

13.4

0.43

27

Aug.

0.3

.3

.3

.3

.3

.3

.2

72

.3

.3

.3

.3

.3

74" .4

.4

.4

.4

.3

.3

.3

.3

.3

.2

.2

.2 

.2

.2

.2

.2

.2

8.8

0.28

17

Sept.

0.2

TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

3.1

0.10

6.1

Calendar year 1955: Max 2,800 Min 0 Mean 18.0 Ac-ft 13,020

Water year 1955-56: Max 2,800 Min o Mean 39.6 Ac-ft 28,760

a No gage-height record; discharge estimated on basis of 8 discharge measurements, weather records, and records for station near Lompoc.

e Rating not developed above wading stage; discharge estimated on basis of 1 discharge measurement, weather records, and records for station near Lompoc.

493801 O - 59 - 1Z
166 SANTA YNEZ RIVER BASIN

Santa Ynez River near Lompoc, Calif.

Location (revised). Lat 34°38'39", long 120°25'48", near east boundary of La Mission 

Vieja de la Purisima Grant, on downstream side of center pier of bridge on State Highway 150, 1.5 miles east of Lompoc, Santa Barbara County, and 2.5 miles downstream from 

Salsipuedes Creek.

Drainage area. 790 sq mi.

Records available.--November 1906 to September 1918 (1909, gage heights only), April 1925 

to September 1956.

Gage.--Water-stage recorder. Datum of gage is 79.28 ft above mean sea level, datum of 

"^1929. Prior to Dec. 14, 1928, staff gage and Dec. 14, 1928, to Nov. 30, 1939, waterstage recorder, at site 600 ft upstream at various datums.

Extremes. Maximum discharge during year, 6,070 ofs Dec. 25 (gage height, 11.25 ft); no 

flow during several months.

1908-18, 1925-56: Maximum discharge, 45,000 cfs Mar. 3, 1938 (-gage height, 29.3 ft, 

site and datum then in use), from rating curve extended above float measurement of 

38,000 cfs by logarithmic plotting; no flow at times in some years.

Maximum daily discharge, estimated as 62,000 cfs, occurred Jan. 9, 1907.

Remarks. Records good. Discharge measurements generally made one or more times a week. 

Flow regulated by Jameson Lake and Gibraltar and Cachuma Reservoirs (see p. 146,147,152). 

Water diverted out of basin from Jameson Lake and Gibraltar and Cachuma Reservoirs to 

cities of Montecito, Santa Barbara, and Goleta for municipal supply. Some water pumped 

from wells along river banks for irrigation.

Revisions (water years). WSP 611: Drainage area. 1938(M). 

WSP 931: 1914-40(M). WSP 981:

Rating tables, water year 1955-56 (gage height, in feet, and discharge, In cubic 

feet per second)

Oct. 1 to Dec. £4 Dec. 24 to Jan. £5 Jan. £5 to Sept. 30

5.44

5.5

5.6

5.7

5.8

5.9

2.8

7.6

16

6.0 

6.£ 

6.5 

7.0 

7.5

135

345

670

4.8 

5.0 

5.5 

6.0 

6.5

18

25

53

98

168

7.0 

7.5 

8.5 

9.5 

10.0

280

460

990

£,060

£,910

4.£6

4.3

4.4

4.5

4.6

4.7

4.8 

5.0 

5.2

5.5 

5.8 

6.1 

6.5 

7.0 

7.5 

8.0

97

154

££1

337

5 £5

760

1,030

1,570

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

£

3

4

5

6

7

8

9

10

11

1£

13

14

15

16

17

18

19

£0

£1

££

23

£4

£5

£6 

27

£8

£9

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

651

2.820

1,050 

60 £

178

98

68

7£

5,539

179

10,990

Jan.

68

5£

4£

38

3£

29

£5

£4

£4

21

19

18

Is

18

18

19

19

£0

£0

£0

20

19

19

18

84£

1,560 

1,200

5£0

£81

£16

182

5,4£1

175

10,750

Feb.

TIB" 140

102

94

85

78

68

65

57

53

56

57

60

56

51

48

47

48

47

45

45

45

90

77

64

56 

51

47

46

1,893

65.3

3,750

Calendar year 1955: Max £,820 Min 0

Mar.

44

35

40

40

39

37

34

34

34

34

32

30

29

29

28

25

24

£4

2£

20

19

18

16

14

13

11 

11

9.7

8.8

STff

S« 8

776.1

£5.0

1,540

Apr.

9.7

8.8

8.8

8.4

7.4

6.£

5.4

4.7

4.4

4TT

7.8

16

18

20

18

15

14

12

11

8.8

8.4

9.2

9.7

11

1£

£9 

32

45

3T

£9

431.1

14.4

855

May

£5

£0

18

16

15

14

14

14

31

21

28

25

£1

19

19

17

16

14

14

12

11

11

10

9.7

8.8

7.4 

5.8

5.0

4.4

4.4

4.1

457.6

14.8

908

June

3.6

27s

2.8

3.0

2.6

1.8

1.6

1.6

1.5

1.5

1.5

1.3

1.0

.9

.8

.7

.6

.5

.5

.6

.5

.5

.4

.5

.5

.7 

.6

.3

.2

^_1

35.5

1.18

70

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Mean 17.5 Ac-ft 1£,640

Water year 1955-56: Max 2,8£0 Min 0 Mean 39.8 Ac-ft £8,860
SANTA YNEZ RIVER BASIN 167

Santa Ynez River at H Street, near Lompoc, Calif.

Location. Lat 34°40'10", long 120°27'20", In Lompoc Grant, near left bank on downstream 

 side of H Street Bridge on State Highway 1, 2 miles north of Lompoc, Santa Barbara 

County.

Drainage area. 816 sq ml.

Records available.--Apr11 1947 to September 1956.

Ga, . Water-stage recorder. Datum of gage is 56.74 ft above mean sea level, datum of 

929. Since Apr. 26, 1947, supplementary water-stage recorder at same datum on third

pier from right bank. Nov. -19, 1952, to May 31, 1954, supplementary water-stage

recorders at various sites and datums near bridge.

Extremes. Maximum discharge during year, 4,780 cfs Dec. 25 (gage height, 10.43 ft); no 

flow during part or all of most months.

1947-56: Maximum discharge, 37,900 cfs Jan. 16, 1952 (gage height, 17.4 ft), from 

rating curve extended above 2,900 cfs by logarithmic plotting; no flow during large 

parts of each year.

Remarks.--Records good. Discharge measurements or observations of no flow generally made 

one or more times a week. Plow regulated by Jameson Lake and Gibraltar and Cachuma 

Reservoirs (see p.-146,147,152 ). Water diverted out of basin from Jameson Lake and 

Gibraltar and Cachuma Reservoirs to cities of Montecito, Santa Barbara, and Goleta for 

municipal water supply. Pumpage from wells along river for irrigation affects surface 

flow at this station.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(shifting-control method used Dec. 24, 25, Dec. 30 to Jan. 31)

6.4

6.5

6.6

6.7

6.8

6.9

7.0

.2

1.0

3.4

9.6

25

50

7.1

7.2 

7.5 

8.0

9.0

9.1

85

130

330

640

2,320

2,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

00"

0

o

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

0

540

2.440

1,070 

656

209

85

59

73

5,132

166

10,180

Jan.

59

38

25

18

16

14

13

12

11

8,8

7.2

ill

5.8

6.4

8,0

7.2

5.8

5.8

8.8

11

8.0

8.0

6.4

875

1.690 

1,340

677

377

172

160

5,606.4

181

11,120

Feb.

154

m

101

85

77

73

69

65

50

47

35

4T 

41

41

44

47

38

38

38

38

38

38

77

66

56

50 

44

38

35

1,679

57.9

3,330

Mar.

38

33

31

31

31

29

27

25

25

25

25

25 

25

23

21

21

20

18

18

14

12

11

11

9.6

8.8

5.8 

4.2

2.1

1.6

TTo- 1.0

573.1

18.5

1,140

Apr.

1.4

1.2

.5

.2

0

0

0

0

0

0

0

6.7 

5.3

9.6

11

11

6.7

5.2

4.2

2.4

1.1

1.6

1.6

3.4

4.6

11 

27

52

51

24

222.7

7.42

442

May

18

14

12

9.6

8.0

5.8

5.2

5.2

18

14

20

T6 

16

13

11

9.6

9.6

9.1

6.4

4.6

4.2

3.8

3.4

3.4

2.1

1.2 

.6

.E

0

0

0

244.0

7.87

484

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 2,440 Min 0 Mean 14.3 Ac-ft 10,390

Water year 1955-56: Max 2,440 Min 0 Mean 36.8 Ac-ft 26,700
168 SANTA YNEZ RIVER BASIN

Santa Ynez River at 13th Street, near Lompoc, Calif.

Location. La t 34°40 I OS", long 120°28'2S", in Lompoc Grant (revised), at left bank at" 

13th Street crossing, 2 miles northwest of Lompoc, Santa Barbara County.

Drainage area. 820 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 70 ft (from topographic map). Prior to 

Jan. 21, 1956, at site 250 ft downstream at same datum.

Extremes. Maximum discharge during year not determined, occurred Dec. 25 (gage height, 

7.06 ft); no flow Oct. 1 to Dec. 23, Mar. 29 to Apr. 13, Apr. 20-25, May 26 to Sept. 30.

1954-56: Maximum gage height, that of Dec. 25, 1955 (discharge not determined); no 

flow for several months each year.

Remarks. Records good except those above 200 cfs and those for periods of no gage-height 

 record and indefinite stage-discharge relation, which are fair. Discharge measurements or observations of no flow generally made three times weekly. Flow regulated 

by Jameson Lake, Gibraltar and Cachuma Reservoirs (see p. 146,147,152). Water diverted 

out of basin from Jameson Lake and Gibraltar and Cachuma Reservoirs to cities of 

Montecito, Santa Barbara, and Goleta for municipal supply. Some water for irrigation 

pumped from wells along bank of river in valley upstream.

Rating tables, water year 1955-56, except periods of Indefinite stage-discharge

relation (gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method used Dec. 30, Jan. 9-20, 25-29, Feb. 29

to Mar. 5, Mar. 26, Apr. 16, 17, May 18, 21-25)

Oct. 1 to Jan. 20 Jan. 21 to Sept. 3O

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

0 

.2 

.6 

1.5 

2.9 

5.1 

8.5 

14

1.7 

1.9 

2.2 

2.6 

3.0 

3.5 

4.5 

5.5

20

41

87

189

345

605

1,350

2,400

1.0

1.1

1.2

1.3

1.4 

1.6

1.1

4.8

11

21

48

1.9 

2.3 

2.8 

3.5 

4.3

117

251

496

990

1,760

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

00"

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

6250

e2.500

el, 000

6550

174

115

53

27

4,469

144

8,860

Jan.

24

21

20

18

15

13

11

8.9

6.6

5.7

5.7

5.7

5.7

5.7

5.7

5.4

5.1

4,6.

4.9

5.4

a6

5.9

7.1

5.9

724

1.700

1,200

521

257

185

168

4,977.0

161

9,870

Feb.

134

al50~

a!08

a90

a80

a70

a65

a59

a55

48

45

42

46

44

44

42

40

42

39

38_

38

40

76

62

54

48

42

40

39

1,690

58.3

3,350

Mar.

30

31

31

"3?32

27

23

23

23

24

24

23

22

22

20

18

16

15

13

11

9.8

7.1

5.9

5.4

3.0

2.9

2.0

.7

0

0

0

496.8

16.0

985

Apr.

00"

0

0

0

0

0

0

0

0

0

0

0

6.5

8.4

4.5

3.0

2.0

.1

0

0

0

0

0

0

7.4

22

28

2ff

18

119.9

4.00

238

May

14

11

8.4

7.1

5.9

4.4

e3

63

16

13

15

16

15

13

9.8

9.0

7.1

4.2

2.3

2.0

1.8

1.6

1.1

.7

.4

0

0

0

0

0

0

184.8

5.96

367

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 2,300 Mln 0 Mean 12.3 Ac-ft 8,910

Water year 1955-56: Max 2,300 Mln 0 Mean 32.6 Ac-ft 23,670

a No gage-height records discharge Interpolated or estimated on basis of 7 discharge measurements, 

weather records, and records for nearby stations.

e Stage-discharge relation Indefinite} discharge estimated on basis of records for nearby stations.
SANTA YNEZ RIVER BASIN 169

Santa Ynez River at barrier, near Surf, Calif.

Location (revised).--Lat 34"41'20", long 120°35'05", In Lompoc Grant, on upstream side at 

center or salt-water barrier, 1.0 mile upstream from mouth and 1.2 miles east of Surf, 

Santa Barbara County.

Drainage area. 895 sq ml.

Records available, May 1947 to September 1956.

Gage. Water-stage recorder and compound broad-crested weir. Datum of gage Is 5.5 ft 

above mean sea level, datum of 1929.

Average discharge. 9 years, 52.9 ofs (38,300 acre-ft per year).

Extremes. Maximum discharge during year, 5,240 cfs Dec. 25 (gage height, 3.42 ft), from 

rating curve extended above 200 cfs on basis of weir formula; maximum gage height, 

4.78 ft Dec. 25 (backwater from sandbar at mouth); no flow Oct. 1 to Dec. 3, May 24 to 

Sept. 30.

1947-56: Maximum discharge, 36,000 cfs Jan. 16, 1952 (gage height, 6.50 ft), from 

.rating curve extended above 200 cfs on basis of weir formula; no flow during several 

months of each year.

Remarks.--Records fair. Discharge measurements or observations of no flow generally made 

one or more times a week. Plow regulated by Jameson Lake and Gibraltar and Cachuma 

Reservoirs (see p. 146,147,152 ). Water diverted out of basin from Jameson Lake and 

Gibraltar and Cachuma Reservoirs to cities of Monteclto, Santa Barbara, and Goleta for 

municipal supply. Pumpage from wells along river for Irrigation affects flow at this station.

Rating table, water year 1955-56, except periods of backwater from sandbar (gage 

height. In feet, and discharge, In cubic feet per second)

0.5

.6

.7

.9

1.2

0

.5 

1.3 

3.6 

8.6

1.5

1.6

1.7

1.8 

2.0

16

25

42

79

205

2.2 

2.4 

2.6 

2.8 

3.0

420

730

1,330

2,050

2,900

Discharge,' In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0

0

0

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

c60

02,500

1,170 

893

205

120

74 

66

5,090.0

164

10,100

Jan.

90

58

35

29

25

19

14

11

9.4

7.8

7.0

7.0

6.8

6.8

7.0

7.1

6.5

5.8

5.6

6^

7.0

7.1

7.5

7.0

676

2.050 

1,590

580

277

205 

182

5,952.9

192

11,810

Feb.

156

132

120

114

102

102

79

70

66

62

58

55

55

55

62

55

48

45

42

40

40

40

62

84

66

62

58

55

51

2,036

70.2

4,040

Mar.

*5

38

35

34

32

29

25

24

21

22

26

29

25

22

21

20

16

15

13

12

12

9.4

8.0

6.4

4.7

4.8

4.1

3.7

1.2

.5

^A

559.1

18.0

1,110

Apr,

0.5

.3

.3

.2

.4

.3

.5

.7

.6

.3

1.5

1.5

.6

.3

.3

.2

.2

.1

TT

.3

.5

1.4

.7

.5

.3

1.1 

1.2

3.4

8.0

E-- Q

5 .8

32.1

1.07

64

May

5.0

3.1

2.3

cl.5

cl.5

cl

C.I

C.I

1.7

9.6

c8

ell

^9.5

c8.5

C7.5

c6

c5

c5

c3.5

1.4

.7

.3

.1

0

S

0 

0

0

0

0

0

92.4

2.98

183

June

0

0

0

July

0

0

0

'Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955 : Max 2,500 Mln 0 Mean 14.5 Ac-ft 10,510

Water year 1955-56 : Max 2,500 Mln 0 Mean 37.6 Ac-ft 27,310

c Backwater from sandbar at mouth.
170 SAN ANTONIO CREEK BASIN

San Antonio Creek near Casmalia, Calif.

Location.--Lat 34°46'56", long 120°31'47", in Jesus Maria Grant, on Camp Cook Military 

Reservation on downstream side of left center pile bent of San Antonio road bridge, 

0.7 mile east of Junction of San Antonio road with Lompoc-Casmalia road and 3.8 miles 

south of Casmalia, Santa Barbara County.

Records available.--October 1955 to September 1956.

Sage. Water-stage recorder. Altitude of gage is 160 ft (from topographic map).

Extremes. Maximum discharge during year, 463 cfs Jan. 25 (gage height, 6.15 ft); minimum 

daily, 0.8 cfs Oct. 6, 7, 29, June 28-30, Sept. 18.

Remarks. Records good except those for periods of no gage-height record and indefinite 

' stage-discharge relation, which are poor. Discharge measurements generally made twice 

a month. Plow affected by pumpage for irrigation from wells along stream.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

1.0 

1.2 

1.2

1.4

1.2

754

1.0

1.0

1.2

1.2

1.1

1.1

1.5

1.8 

1.7

1.6

1.8

1.6

1.6

T79" 1.9

1.9

1.5

1.3

1.6

1.7

1.0

.8

.9

1.4

41.7

1.35

83

Nov.

1.4 

1.2

1.4 

1.5

1.6

1.8

1.6

1.3

1.1

1.4

1.5

1.9

2.8

~5.2 27 

3.5

4.6

3.6

3.0

3.0

4.0

3.6

3.0

2.7

2.7

2.6

2.5

2.3

2.5

3.0

99.3

3.31

197

Dec.

e3 

e3

e3

65

e3

63.2

63.4

3.0

2.9

3.1

2.9

2.8 3~70"

3.0

3.1 

3.2

3.4

3.6

3.5

3.8

4.1

4.1

6.1

62

87.

31

34

14

8.0

6.1

6.0

337.3

10.6

649

Jan.

a5. 5 

a5

4.7

4.5

4.4

4.4

4.4

4.2

4.1

4.1

4.1

4.1

4.1

4.1 

4.1

4.0

3.9

475

4.7

5.4

4.8

6.8

5.6

216

294 2~10~

56

23

13

13

935.0

30.2

1,850

Feb.

10 

a9

a8 

a7

as

as

a5

a4.5

a4.5

a4.5

a4.5

a4.5

4.5

4.5

4.2 

4.1

5437?

3.9

3.8

4.0

4.1

11~9~.9

6.3

6.0

4.8

4.6

4.4

161.5

5.57

320

Mar.

4.2

ITT

4.1 

4.1

4.0

4.0

3.6

3.8

3.9

3.8

3.7

3.7

3.7

3.7

3.6 

3.5

3.5

3.5

3.4

3.2

3.1

3.1

3.1

3.1

3.1

3.1

2.8

2.6

277

2.9

3.0

107.7

3.47

214

Apr.

3.3 

3.2

3.1 

2.9

2.9

2.9

2.8

3.0

2.9

3.3

11

12~~5~. 4

4.2

4.2 

3.7

3.3

3.2

2.9

2.8

2.7

2.6

2.5

2.8

2.4

11

8.5

4.6

3.4

3.0

126.5

4.22

251

May

3.0 

2.7

2.9 

3.0

3.0

2.5

2.3

2.1

8.5 4"79~

3.0

2.9

2.6

2.2

1.6 

1.6

1.6

el. 5

eT75~

el. 5

1.6

1.6

1.6

el. 6

el. 6

1.5

el. 5

el. 5

1.5

el. 5

el. 5

71.9

2.32

143

June

fci

1.4

1.3

1.3

1.3

1.3

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.1

el.l

el.l

el.l

el

e.9

e.9

e.9

e.9

e.9

e.9

e. 7s~8

.8

33.1

1.10

66

July

1.0 

1.1

1.1

1.1

1.1

1.1

T7S- 1.2

1.1

1.1

1.1 1.1

1.1

1.1 1.1

1.1

1.0

ii

.9

.9

e.9-.9

.9

.9

.9

.9

.9

1.1

1.1

32.1

1.04

64

Aug.

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

el.l

1.1

1.2

1.4

T74

1.2

1.3

1.1

1.0

1.1

1.1

1.1

1.1

1.1

1.1

' 1.1

34.9

1.13

69

Sept.

.fcf

1.1

1.2

1.2

el. 2

1.2

1.2

1.1

1.1

1.1

el.l

el.l

el

.9

e79~.8

e.9

el

el

el

el

el

el

el

el

el

el

31.6

1.05

63

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 294 Mln 0.8 Mean 5.47 Ac-ft 3,970

Peak discharge (base. 50 cfs).--Nov. 14 (1:30 a.m.) 66 cfs (3.43 ft); Dec. 25 (5 p.m.) 130 cfs 

(3.96 ft); Jan. 25 (6:30 p.m.) 463 cfs (6.15 ft).

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

e Stage-discharge relation indefinite; discharge estimated on basis of 5 discharge measurements, 

weather records, and records for nearby stations.
SANTA MARIA RIVER BASIN 171

Cuyama River near Ventucopa, Calif.

Location. Lat 34°41'20", long 119°21'25", In NEtrNWii sec. 19, T. 7 N., R. 23 W., on downstream side near left end of Ozena Bridge on U. S. Highway 399, 4.5 miles downstream 

from confluence of Dry Canyon and Alamo Creek and 12 miles southeast of Ventucopa.

Drainage area. 90 sq ml, approximately.

Records available.--November 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 3,500 ft (from topographic map). Prior 

to Sept. 5, 1952, at various locations on bridge at different datums.

Average discharge. 11 years (1945-56), 5.32 cfs (3,850 acre-ft per year); median of 

yearly mean discharges, 3.8 cfs (2,800 acre-ft per year).

Extremes. Maximum discharge during year, 400 cfs Jan. 26 (gage height, 4.03 ft): minimtiraaily, 0.1 cfs July 12 to Sept. 30.

1945-56: Maximum discharge not determined, probably occurred Jan. 15, 1952 {gage 

height, 6.3 ft, datum then In use); no flow for many days during July, August, and 

September 1951.

Remarks. Records fair except those above 100 cfs and for periods of fragmentary or no 

gage-height record, which are poor. Discharge measurements generally made twice a 

month. Minor diversions above station for Irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

Q._3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

 5

.5

.5

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.7

.7

jJL

15.1

0.49

30

Nov.

0,8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.9

1.0

JLi

1.2

1.2

1.3

1.2

1.2

1.2

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.3

1.3

1.3

31.8

1.06

63

Dec.

1.4

1.9

^1

1.3

2.8

6.5

2

2

1.5

1.5

1.5

1.4

1.3

1.3

1.3

1.4

1.4

1.3

1.3

1.3

1.3

1.3

2.5

51

100

28

7.6

4.6

4.6

5.8

5.5

247.5

7.98

491

Jan.

5.5

5.2

4.6

4.0

3.7

3.4

3.2

3

2.5

2.5

2

2

1.5

1.5

1.3

1.2

1.2

1.2

1.2

1.5

1.3

1.3

1.3

1.3

48

249

70

33

19

15

17

508.4

16.4

1,010

Feb.

8

4

4

3.5

3

3

3

3

3

2.5

2.5

2.5

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2*A

2.6

3.0

2.8

2.6

2.6

2.6

2.6

-

86.6

2.99

172

Mar.

2^

2.6

2.6

2.6

2.4

2.4

2.2

2.0

1.8

1.8

1.7

1.5

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

52.0

1.68

103

Apr.

1.5

1.7

1.5

iil

1.4

1.4

1.5

1.5

1.5

1.5

4.4

22

18

14

33

20

13

12

11

11

10

8.6

8.2

6.6

5.8

7.7

6.6

5.8

5.2

4.2

242.0

8.07

480

May

3.0

1.8

UL

1.4

1.4

1.4

1.5

1.9

30

12

7

6

5

4

3

2.8

2.8

2.4

2.4

2.4

2.4

2.2

2.0

1.8

1.8

1.7

1.7

1.7

1.5

1.4

1.5

113.3

3.65

225

June

it!

1.4

1.3

.8

.8

.8

.8

.7

.7

.7

.6

.6

.5

.6

.6

.6

.6

.5

.5

.4

.5

.4

.4

.4

.4

.=1

.3

.3

.3

. . . . ?.

18.5

0.62

37

July

0^

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

J,

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4.2

0.14

8.3

Aug.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Sept.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.0

0.10

6.0

Calendar year 1955 : Max loo Mln O.I Mean 3.27 Ac-ft 2,37O

Water year 1955-56 : Max 249 Mln 0.1 Mean 3.62 Ac-ft 2,630
172 SANTA MARIA RIVER BASIN

Cuyama River near Santa Maria, Calif.

Location (revised). Lat 35°00'42", long 120°16'43", in Suey Grant, on right bank 60 ft 

downstream from highway bridge, 2.6 miles upstream from Alamo Creek, and 8.9 miles 

northeast of Santa Maria, Santa Barbara County.

Drainage area. 912 sq mi.

Records available.--December 1929 to September 1956 .

Gage.--Water-stage recorder. Datum of gage is 608.93 ft above mean sea level, unadjusted. 

Prior to Oct. 3, 1936, at same site at different datum. Oct. 3, 1936, to Feb. 2, 1945, 

at site 200 ft upstream at datum 1.31 ft higher. Feb. 3 to June 21, 1945, at same site 

at datum 0.78 ft higher. June 21, 1945, to July 8, 1947, at same site at datum 1.00 ft 

higher.

Average discharge.--26 years (1930-56), 20.4 cfs (14,770 acre-ft per year); median of 

yearly mean discharges, 10 cfs (7,200 acre-ft per year).

Extremes.--Maximum discharge during year, 770 cfs Jan. 25 (gage height, 5.25 ft); no flow 

Nov. 1 to Dec. 3, Dec. 15-22, Aug. 7, 10, Aug. 13 to Sept. 30.

1929-56: Maximum discharge, 17,300 cfs Mar. 3, 1938 (gage height, 16.6 ft, site and 

datum then in use), result of slope-area determination of peak flow; no flow at times 

during some years.

Remarks.--Records good. Discharge measurements generally made twice a month. Some pumpage for irrigation from wells along stream above station.

Revisions.--WSP 931: Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Nov.

0

0

0

Dec.

0

o

0

.5

.5

.6

.6

.5

.5

.4

.2

.2

.1

.1

0

0

0

0

0

0

0

0

.1

5.1

56

5.4

4.6

1.8

1.1

.9

.9

60.1

1.94

119

Jan.

0.7

.5

.5

.5

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.3

.2

.2

.2

.2

259

286

325

226

116

70

36

1,325.7

42.8

2,630

Feb.

26

23

20

16

15

13

9.9

8.4

7.4

6.8

6.6

6.0

6.0

5.6

5.6

5.4

4.8

4.8

4.8

4.6

4.6

4.8

6.6

8.1

6.8

6.2

6.2

6.0

5.4

254.4

8.77

505

Mar.

6^0.

5.0

4.6

4.3

4.1

4.1

3.8

3.8

3.8

3.8

3.6

3.4

3.2

3.0

2.8

2.6

2.6

2.6

2.4

2.3

2.1

2.0

2.0

2.0

2.0

1.8

1.7

1.6

ill

1.4

1.7

91.5

2.95

181

Apr.

2.1

2.4

2.0

1.7

1.6

1.6

1.4

1.3

1.3

1.8

8.0

la

5.4

4.8

4.6

3.4

3.0

2.3

2.1

1.8

1.6

1.4

1.3

1.7

1.5

5.8

8.9

4.8

3.2

2.6

94.5

3.15

187

May

2.4

1.8

1.8

1.8

1.7

1.4

1.1

1.4

5.0

6.5

3.6

3.2

2.0

1.3

.9

.5

.5

.5

.5

.=!

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.4

42.6

1.37

84

June

0.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

^L.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4.6

0.15

9.1

July

oa

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

^L

.2

.2

.2

.2

.2

.2

.2

.2

4.0

0.13

7.9

Aug.

oa.1

.1.1

.1

.1

3. .1

.1

0

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

0.03

2.0

Sept.

0

0

0

Calendar year 1955: Max 70 Mln 0 Mean 1.86 Ac-ft 1,350

Mater year 1955-56 : Max 325 Mln 0 Mean 5.14 Ac-ft 3,730

Peak discharge (base. 200 cfs ). Jan. 25 (3 p.m.) 770 cfs (5.25 ft ).
SANTA MARIA RIVER BASIN 

Alamo Creek near Santa Maria, Calif.

173

Location. Lat 35°01'20", long 120°18"10", in Suey Grant, on right bank just downstream 

from highway bridge, 1.2 miles upstream from mouth and 9 miles northeast of Santa Maria, 

Santa Barbara County.

Drainage area. 87.7 sq mi.

Records available. October 1943 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 581.14 ft above mean sea level, datum 

~of 1929.

Average discharge. 13 years, 4.44 cfs (3,210 acre-ft per year); median of yearly mean 

discharges, 2.1 cfs (1,500 acre-ft per year).

Extremes. Maximum discharge during year, 1,360 cfs Jan. 26 (gage height, 4.66 ft); minimum daily, 0.7 cfs Oct. 6-11, Nov. 5.

1943-56: Maximum discharge, 2,820 cfs Jan. 15, 1952 (gage height, 8.00 ft), from 

rating curve extended above 500 cfs by logarithmic plotting; minimum daily, less than 

0.1 cfs 3n 1949 and 1950.

Remarks. Records good. Discharge measurements generally made twice a month.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

1Z

13

14

15

16

17

18

19

ZO

Zl

ZZ

Z3

Z4

Z5

Z6

Z7

Z8

Z9

30

31

Total

Mean

Ac-ft

Oct.

1.1

1.1

1.1

1.1

1.1

.7

.7

.7

.7

.7

.7

.8

1.1

1.1

1.2

l.Z

l.Z

l.Z

l.Z

1.1

1.1

l.Z

1.1

.8

.8

1.0

1.0

.8

.8

. 8

.8

30.0

0.97

60

Nov.

0.8

.8

.8

1.0

.7

.8

.8

.8

.8

.8

.8

1.0

1.5

1.8

1.1

1.1

1.4

1.1

1.1

1.1

l.Z

l.Z

1.1

1.0

1.0

1.0

1.0

1.0

1.1 1.1

30.8

1.03

61

Dec.

1.6

1.6

l.Z

1.6

l.Z

l.Z

U,

1.1

1.1

1.1

1.1

1.1

1.1

1.1

l.Z

l.Z

1.2

l.Z

1.4

1.4

l.Z

l.Z

l.Z

4.6

4.3

3.9

Z.Z

Z.O

Z.O

1.8

1.8

51.0

1.65

101

Jan.

1.6

1.

1.

1.

1.

1.

1.

1.

1.

1.

1.

1.

1.4

1 2

172

l.Z

l.Z

l.Z

l.Z

1.4

l.Z

l.Z

l.Z

l.Z

310

Z4Z

4Z7

48

19

11

5.0

1,094.0

35.3

Z,170

Feb.

4.2

377

3.4

3.Z

3.0

Z.7

Z.7

Z.7

Z.7

Z.7

2.7

2.4

Z.Z

Z.Z

2.Z

Z.Z

Z.Z

2.2

2.2

2.2

Z.Z

Z.Z

Z.4

Z.4

Z.Z

Z.Z

2.0.

Z.O

2.0

73.3

Z.53

145

Mar.

2.0

270

Z.O

Z.O

2.0

Z.O

z.o

2.2

Z.Z

.Z.4,

Z.4

Z.Z

2.Z

Z.Z

2.Z

2.4

Z.3

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

2.2

Z.Z

Z.Z

Z.Z

2.Z

67.5

Z.18

134

Apr.

Z.2

2.Z

2.Z

Z.Z

2.Z

Z.Z

Z.O

Z.O

2.Z

Z.Z

3.0

Z.7

Z.4

Z.O

Z.O

Z.O

Z.O

Z.O

2.0

Z.O

1.8

1.8

l.S

1.6

1.6

Z.Z

Z.Z

Z.Z

Z.Z

Z.Z

63.3

Z.ll

1Z6

May

2.2

Z.O

Z.O

Z.O

Z.O

l.S

1.8

1.8

Z.O

Z.O

Z.O

z.o

Z.O

Z.O

Z.O

Z.O

Z.O

Z.O

1.8

1.6

1.3

1.3

1.3

1.5

1.6

1.8

Z.O

Z.Z

Z.Z

Z.Z

Z.O

58.4*

1.88

116

June

2.0

1.8

2.0

Z.O

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

Z.O

Z.O

Z.O

Z.O

Z.O

Z.O

1.8

Z.O

Z.O

2.0

Z.O

1.8

1.8

1.8

1.8

2^

57.0

1.90

113

July

Z.4

Z.4

Z.Z

Z.O

1.8

1.6

176

1.8

Z.O

Z.4

Z.4

Z. 7

Z.7

Z.7

Z.4

Z.4

Z.4

Z.4

Z.Z

2.Z

Z.Z

Z.O

1.8

1.8

1.8

1.8

1.8

1.6

1.6

1.6

1.6

64.3

Z.07

128

Aug.

1.6

1.5

1.6

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.6

1.6

1.6

1.6

1.5

1.3

173

.3

.3

.5

.5

.5

.5

.5

.5

.5

49.9

1.61

99

Sept.

1.5

TTs

1.5

1.5

1.5

1.5

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

l.Z

1.0

Y.o

l.Z

l.Z

l.Z

l.Z

l.Z

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.5

39. Z

1.31

78

Calendar year 1955; Max 5.9 Win 0.7 Mean 1.5Z Ac-ft 1,100

Water year 1955-56; Max 427 Win 0.7 Mean 4.59 Ac-ft 3,330

Peak discharge (base, 50 cfs). Jan. 26 (1Z D.ra. ) 1.360 cfs (4.66 ft).
174 SANTA MARIA RIVER BASIN 

Huasna River near Santa Maria, Calif.

Location. Lat 35°01'20", long 120°19'20", in Suey Grant, on left bank 0.4 mile upstream 

from mouth and 8 miles northeast of Santa Maria, Santa Barbara County.

Drainage area. 119 sq mi.

Records available.--December 1929 to September 1956.

Page. Water-stage recorder. Altitude of gage is 525 ft, revised (from topographic map). 

Prior to Aug. 28, 1943, at site 350 ft upstream at different datum. Aug. 28, 1943, to 

Jan. 27, 1945, at site 25 ft downstream at different datum. Jan. 28, 1945, to Sept. 11, 

1953, at site 50 ft downstream at datum 0.97 ft higher.

Average discharge. 26 years (1930-56), 19.1 cfs (13,830 acre-ft per year); median of yearly 

mean discharges, 7.8 cfs (5,600 acre-ft per year).

Extremes. Maximum discharge during year, 2,260 cfs Jan. 25 (gage height, 7.06 ft); no flow 

Oct. 1 to Dec. 4, Aug. 25-30, Sept. 8-30.

1929-56; Maximum discharge, 11,400 cfs Feb. 11, 1938 (gage height, 11.26 ft, site 

and datum then in use), from rating curve extended above 1,100 cfs on basis of slopearea determination of peak flow; no flow during parts of several years.

Remarks. Records good. Discharge measurements or observation of no flow generally made 

three times a month.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5 

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

£0

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

3.

0

0

0

.1

.3

.4

.3

.3

.4

.4

.4

.6

.6

. 8

.8

.8

.8

.8

1.4

1.6

1.8

2.2

46

119

46

99

44

25

16

17

426.8

13.8

847

Jan.

15

12

9.9 

7.6

6.6 

6.1

5.1

3.9

3.6

3.6

3.2

2.8

2.6

2.6

2.6 

2.2

2.0

2.0

1=8

2.2

2.2

2.0

2.6

2.0

697

899

1.000

299

178

125

101

3,405.2

US

6,750

Feb.

81 Jo

61

55

50 

43

38

35

32

30

29

27

25

23

20 

19

17

15

14

IS

12

12

15

15

15

14

14

13

12

818

28.2

1,620

Mar.

12

12

10 

10

11 

9.9

9.3

9.3

8.7

8.7

8.7

8.7

8.7

8.7

7.6

7.6

7.6

7.6

7.6

7.1

7.1

6.6

6.6

6.6

6.1

5.6

5.1

4.7

jbl

4.7

246.3

7.95

489

Apr.

4.7

4.7

4.7

4.7

4.7

4.7

4.7

5.1

9.8

12

9.3

8.7

6.6

6.1

5.6

5.6

5.1

5.1

4.7

4.7

4.3

al

all

a9

a8

a7

6.6

187.7

6.26

372

May

6.1

5.1

4.7

4.7

4.7

4.7

Ii£

776

7.1

5.6

5.1

5.1

4.3

3.9

3.6

3.2

3.2

3.2

2.8

2.8

3.2

3.6

2.8

.a

.4

.6

1.2

1.2

122.6

3.95

243

June

1.1

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.8

.8

.J.

1.0

1.2

1.2

35.1

1.17

70

July

iuS.

1.2

1.2

.7

.7

.7

.6

.6

.4

.6

.4

.4 

.4

.4

.4

.4

.5

.4

.4

.4

.3

.3

*£.

.2

.2

.2

.2

.2

.2

16.2

0.52

32

Aug.

2*1

.2

.2

.2

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

P.

0

0

0

0

0

.1

2.9

0.09

5.8

Sept.

0^2

.2

.2 

.1

.1 

.1

.1

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

0.03

2.0

Calendar year 1955: Max 119 Mln 0 Mean 2.87 Ac-ft 2,080

Water year 1955-56: Max 1,000 Mln o Mean 14.4 Ac-ft 10,430

Peak diseharee (base. 40 cfs 1. --De

(2.93 ft); Jan. 25 (5 p.m.) 2,260 of

3. 24 (11 p.m.) 187 ofs (3.17 ft); Dec. 27 (4:30 a.m.) 144 cfa 

3 (7.06 ft).

a No gage-height record; discharge estimated on basis of 1 discharge measurement, recorded range 

In stage, and weather records .
SANTA MARIA RIVER BASIN 

Sisquoc River near Sisquoc, Calif.

175

Location. Lat 34°50'25", long 120°10'00", in sec. 20, T. 9 N., R. 31 W., on left bank 

2.2 miles upstream from La Brea Creek and 7 miles east of Sisquoc.

Drainage area. 290 sq mi.

Records available. October 1943 to September 1956. December 1929 to September 1933 at 

site 0.2 mile downstream; low-flow records not equivalent owing to diversion immediately upstream.

Gage.--Water-stage recorder. Datum of gage is 624.30 ft above mean sea level, datum of 

1929 (Corps of Engineers benchmark). Prior to Aug. 24, 1951, at site 0.2 mile downstream at datum 3.70 ft lower; during this period, a supplementary gage at site 200 

ft downstream from present site at different datums was generally used for periods of 

low flow.

Average discharge.--13 years (1943-56), 23.8 cfs (17,230 acre-ft per year); median of 

yearly mean discharges, 14 cfs (10,100 acre-ft per year).

Extremes.--Maximum discharge during year, 1,750 cfs Jan. 26 (gage height, 6.30 ft); mlnimum daily, 0.6 cfs Nov. 5-10.

1943-56: Maximum discharge, 6,880 cfs Jan. 15, 1952 (gage height, 10.08 ft), from 

rating curve extended above 1,700 cfs on basis of slope-area determination of peak 

flow; minimum daily, 0.4 cfs Sept. 14, 19, 21, 1947, Oct. 5-9, 20-22, Nov. 18, 1951.

Maximum discharge known, 11,000 cfs Mar. 2, 1938 (gage height, 8.1 ft, from high-- 

water mark in gage well at site in use 1929-33), from rating curve extended above 

2,800 cfs by logarithmic plotting.

Remarks. Records good. Discharge measurements generally made twice a month. 

Revisions.--WSP 1011: Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.0

1.0

1.0 111 1.0

1.0 tf.8

.8

.8

.8

.8

1.0 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

29.8

0.96

59

Nov.

0.8

.8

.8

.8

.16

.6

.6 

.6

.6

.6

.8

.8

1.0

H

1.0

1.2

1.0

1.0

1.0

1.2

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

27.8

0.93

55

Dec.

1.5

1.5

1.5

1.8

1.5

2.1

1.8

1.5

1.5

1.5

1.5

1.2

1.2 

1.2

1.5

1.5

1.2

1.2

1.5

1;5 i!s

1.5

5.7

562

150

133

38

20

12

8.8

763.4

24.6

1,510

Jan.

8.1

6.2

5.1

4.6

4.1

3.7

6.2 

2.8

2.8

2.8

2.4

2.4

2.4

2.4 

2.4

2.4

ITT

2.1

2.4

2.1

2.1

2.8

2.8

153

1.050

1,010

300

154

111

84

2,938.3

94.8

5,830

Feb.

22.

58

54

48

46

43

39 

36

35

33

32

30

30

29 

28

28

28

28

26

25

M.

24

25

29

32

30

26

26

25

987

34.0

1,960

Mar.

24

23

23

22

22

21

21 

20

IS

18

18

17

17

16

15

15

15

14

14

14

14

14

14

14

14

13

13

12

12

12

12

511

16.5

1,010

Apr.

14

14

14

13

12

11

12 

10

10

10

15

4O

35

33 

28

23

24

29

35

30

32

33

29

24

21

22

35

52

39

32

729

24.3

1,450

May

26

24

22

21

20

18

17 

16

22

116

77

54

41

33 

28

25

23

22

21

20

17

16

16

15

15

14

14

14

14

13

IS

806

26.0

1,600

June

IS

12

11

10

9.5

9.5

8.8 

7.4

6.2

5.7

5.7

5.1

5.1

4.6 

4.1

4.1

4.1

4.1

4.1

4.1

4.1

3.7

3.7

3.2

3.2

3.2

2.8

1*4

2.4

2.4

168.3.

5.61

334

July

2 4

z.4

2.4

2.4

2.4

2.4

2.4 

2.4

2.4

2.4

2.4

2.4

2.4

2.1 

2.1

2.1

2.1

2.1

1.8

1.8

1.8

1.8

1.8

1.5

1.5

1.5

1.5

1.5

1.5

JL1

1.2

62.1

2.00

123

Aug.

1*1

172

1.2

1.2

1.2

1.2

1.2 

1.2

1.2

1.2

1.2

1.2

1.0

l!o

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

33.4

1.08

66

Sept.

1.2

1.2

1.2

1.2

1.2

1.2

1.2 

1.2

1.2

1.2

1.2

TTo

1.0 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

32.2

1.07

64

Calendar year 1955: Max 362 Mln 0.6 Mean 9.18 Ac-ft 6,640

Water year 1955-56: Max 1,050 Mln 0.6 Mean 19.4 Ac-ft 14,060

Peak diseharee (base. 100 cfs).--D

ofs (6.30 ft}; May 10 (9:3O a.m.) 16

eo. 25 (5:30 a.m.) 865 ofs (5.26 ft); Jan. 26 (10:30 p.m.) 1,750 

5 ofs (3.50 ft).
176 SANTA MARIA RIVER BASIN

La Brea Creek near Sisquoc, Calif.

Location. Lat 34°51'10", long 120°11'55", in SEi sec. 13, T. 9 N., R. 32 W., on right bank 

S.100 ft upstream from mouth and 5.5 miles east of Sisquoc.

Drainage area.--86.7 sq mi.

Records available. October 1943 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 550 ft (from topographic map).

Average discharge. 13 years, 3.89 cfs (2,820 acre-ft per year); median of yearly mean 

discharges, 0.8 cfs (580 acre-ft per year).

Extremes.--Maximum discharge during year, 513 cfs Jan. 27 (gage height, 4.18 ft); no 

flow Oct. 1 to Dec. 23, May 30 to Sept. 30.

1943-56: Maximum discharge, 3,320 cfs Jan. 15, 1952 (gage height, 5.94 ft); no 

flow during part or all of each year.

Remarks .--Records good. Discharge measurements or observations of no flow generally made 

twice a month. Perennial low flow from basin above sinks beneath stream bed before 

reaching station.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

3.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

4.9

JLI

1.6 

1.0

.8

.8

.7

.6

15.9

0.51

32

Jan.

0.6

.6

.5

.6

.6

.5

.5

.5

.5

.5

4

B'.44

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.6

124

188 

269 ~88~

52

30

20

782.4

25.2

1,550

Feb.

16.

14

12

12

11

10

8.9

7.4

6.5

5.8

5.3

5.1

4.9

4.0

3.6

3.3

3.1

3.1

2.9

2.9

2.9

2.9

4.2

5.3

4.0

3.6 

3.1

2.6

_ -----

172.8

5.96

343

Mar.

2.2

2^0

1.8

Z.I

1.8

1.7

1.6

1.7

1.6

1.5

1.6

1.6

1.4

1.4

1.2

1.2

1.2

1.2

1.0

1.0

.9

.9

.9

.9

.9

if

.8

.8

.8

.8

40.1

1.29

80

Apr.

1.0

1.0

.8

.8

.8

.7

.6

.6

.6

.7

1.7

g t 7

1.5

1.2

1.0

.8

.8

.7

.6

.5

.5

.4

.5

.4

.4

.6

1.3

.8

.6

.6

25.2

0.84

50

May

0.5

.5

.4

.4

.3

.3

.2

.3

,7

.6

.4

.4

.3

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

0

0

7.0

0.23

14

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 28 Mln o Mean 0.79 Ac-ft 573

Water year 1955-56: Max 269 Min 0 Mean 2.85 Ac-ft 2,070

Peak discharge (base. 30 cfs). Jan. 27 (1 a.m.) 513 cfs (4.18 ft).
SANTA MARIA RIVER BASIN 177

Tepusquet Creek near Sisquoc, Calif.

Location (revised). Lat 34°52'20", long 120°14'35", in Nfi£ sec. 9, T. 9 N. , R. 32 W., on 

downstream wing wall of right bank bridge abutment, 1.1 miles upstream from mouth and 

3 miles east of Sisquoc.

Drainage area. 28.9 sq mi.

Records available.--October 1943 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 500 ft (from topographic map). Prior 

~"^o Dec. 9, 1948, af same site at datum 0.9 ft higher.

Average discharge.--13 years, 1.05 cfs (760 aore-ft per year); median of yearly mean 

discharges, 5.6 cfs (430 acre-ft per year).

Extremes.--Maximum discharge during year, 196 cfs Jan. 25 (gage height, 4.30 ft); mini- 

 mum daily, 0.1 cfs Oct. 31, Nov. 18-20, Dec. 12, 13.

1943-56: Maximum discharge, 318 cfs Jan. 15, 1952 (gage height, 5.93 ft), from

rating curve extended above 15 cfs on basis of slope-area determination of peak flow;

no flow Sept, 8, 1949.

Remarks.--Records good. Discharge measurements generally made twice a month.

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.3 

.3

.3

.3

.2

.2

.2

.2

.3

.3

.2

.2

.3

.3

.3

.3

.3 

.3

.3

.3

^1

.4

.3

.3

.3

.3 

.3

.3

.3

.2

ji

8.6

0.28

17

Nov.

0.3 

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

,4

.2

.2

.2

.2

.1

7T

.1

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.2

6.6

0.22

13

Dec.

0.3 

.3

.2

.3

.3

.3

.3

.2

.2

.2

.2

.JL .1

.2

.2

.2

.2 

.2

.2

.2

.2

.3

.3

17

20.

2.3 

2.9

1.4

.8

.8

.7

51.1

1.65

101

Jan.

0.6 

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4 

.4

.4

.5

.6

.6

.6

.5

69

1

24

13

6.6

3.2

262.1

8.45

520

Feb.

f*2.9

2.7

2.7

2.7

2.5

2.5

2.3

2.3

2.3

2.3

2.2

2.2

2.2

2.2

H2.2

2.2

2.2

2.3

2.7

2.9

2.9

2.9 

2.6

2.5

2.5

72.3

2.49

143

Mar.

M2.5

2.5

2.5

2.0

2.0

2.0

1.9

1-7

1.7

1.7

1.7

1.7

1.6

1.5

H1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.4

1.4

1.5

1.5

1.5

52.7

1.70

105

Apr.

1.5 

1.4

1.4

1.4

1.3

1.3

1.3

1.4

1.4

1.4

1*1

1.4

1.4

1.4

1.4

1.3

1.3 

1.3

1.3

1.1

1.2

1.1

1.2

1.2

iiQ

1.2 

1.2

1.1

1.1

1.2

38.8

1.29

77

May

1*1 1.0

if

.8

.8

.8

.8

1.2

.9

.8

.8

.8

.8

.8

.8

.9 

.9

.9

.9

.9

.9

.9

.8

.8

.8 

.8

.8

.9

.9

.8

26.8

0.86

53

June

0.8 

.8

4.9

.9

.9

.9

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8 

.8

.8

.8

.8

.8

.8

.7

jji.

.6 

.6

.6

.6

.6

23.5

0.78

47

July

**

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6 

.6

.6

.6

.6

.6

it

.5

.5 

.6

.6

.5

.5

.6

18.0

0.58

36

Aug.

0.6 

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

^1

.4

.4 

.4

.4

.4

.4

.3

.3

.3

.3

.3 

.3

.3

.3

.3

.3

13.1

0.42

26

Sept.

0.3 

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3 

.3

.3

.3

.3

.3

.3

.3

.3

.3 

.3

.3

.3

.3

9.0

0.30

18

Calendar year 1955: Max 20 Mln 0.1 Mean 0.84 Ao-ft 605

Water year 1955-56 : Max 75 Mln 0.1 Mean 1.59 Ao-ft 1,160

Peak discharge (base. 10 cfsl . --Dec. 24 (12 p.m.) 116 cfs (3.54 ft); Jan. 25 (1 p. 

(4.30 ft).

.) 196 cfs
178 SANTA MARIA RIVER BASIN

Sisquoo River near Garey, Calif.

Location. Lat 34°53'15", long 120°18'00", in ffl& sec. 1, T. 9 N. ( R. 33 W., on right bank 

0.5 mile east of Garey and 3.5 miles dovmstream from Tepusquet Creek.

Records available . February 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 370 ft (from topographic map). Prior to 

Aug. 27, 1954, at site 3 miles upstream at different datum.

Average discharge.--15 years, 22.7 cfs (16,430 acre-ft per year); median of yearly mean 

discharges, 9.2 cfs (6,700 acre-ft per year).

Extremes.--Maximum discharge during year, 2,120 cfs Jan. 27 (gage heignt, 6.19 ft); maximum gage height, 7.38 ft Jan. 25 (backwater from temporary gravel dike immediately 

downstream); no flow during most of year.

1941-56: Maximum discharge, 13,000 cfs Jan. 23, 1943 (gage height, 8.46 ft, site 

and datum then in use), from rating curve extended above 2,000 cfs on basis of records 

at upstream stations; no flow during several months of each year.

Remarks --Records good except those for period of indefinite stage-discharge relation, 

which are poor. Discharge measurements or observations of no flow generally made twice 

a month. Some diversion above station for irrigation.

Revisions (water years). TOP 1011: 1941, 1943.

Discharge, In cubic feet per second, water year October 1955 

to September 1956

Dec. 24.

25.

26.

27.

28.

29.

51

277

155

107

28

4.7

Jan. 25.......... e200

Jan. 26.......... 1,260

27.......... 1,400

28.......... 403

29.......... 183

30.......... 91

31.......... 44

Feb. 1.......... 12

e Stage-discharge relation indefinite; discharge estimated 

on basis of records for nearby stations.

Note. Plow occurred only on days listed above.

Month Cfs -days

622.7

3,581

12

-

Maximum

277

1,400

12

277

1,400

Minimum

0

0

0

0

0

Mean

20.1

116

.41

2.55

11.5

Runoff in 

acre-feet

1,240

7,100

24

1,850

8,360

Peak discharge (base. 100 cfs). Dec. 25 (8:30 a.m.) 740 ofs (5.18 ft); 

Jan. 27 (7 a.m.) 2,120 ofs (6.19 ft).

Santa Maria River at Guadalupe, Calif.

Location.--Lat 34 0 58'35n , long 120°34'15", in Ouadalupe Grant, on downstream side of third

 bridge pier from left bank on State Highway I, 0.5 mile north of Ouadalupe, Santa Barbara County, and 4.5 miles upstream from mouth, 

Drainage area. 1,763 sq mi.

Records available . January 1941 to September 1956. 

Gage. Water-stage recorder. Datum of gage is 64.92 ft above mean sea level, datum of

 1929, supplementary adjustment of 1934 (Corps of Engineers benchmark). Supplementary 

water-stage recorder near right bank at same datum. Prior to Aug. 11, 1955, at site 

100 ft upstream at same datum. Oct. 5, 1945, to Aug. 11, 1955, supplementary gage near 

right bank 100 ft upstream at same datum.

Average discharge. 15 years, 19.5 cfs (14,120 acre-ft per year); median of yearly mean 

discharges, 2.9 cfs (2,100 acre-ft per year).

Extremes.--Maximum discharge during year not determined, occurred Jan. 26 (3.79 ft); maxi-

 mum gage height, 5.88 ft Jan. 25 (backwater from road embankment); no flow during most

of year,

1941-56: Maximum discharge, 23,800 cfs Jan. 16, 1952 (gage height, 8.18 ft), from

rating curve extended above 8,000 cfs by logarithmic plotting; no flow during several

months of each year. 

Remarks.--Records poor. Discharge measurements or observations of no flow generally made

 twice a month. Several small surface diversions and extensive pumpage from wells for 

irrigation along stream above station.

Discharge, in cubic feet per second, water year October 1955 

to September 1956

Dec. 24

25

Jan. 25

.... 1.0

.... .5

.... 50

.... 800

27.......... 1,100

150

10

5

Note.--Stage-discharge relation indefinite on all days of 

flo«; discharge estimated on basis of 3 discharge measurements and the combined record of 4 contributing streams. 

Flow occurred only on days listed above.

Water year 1955-56. ........

Cfs-days

-

Maximum

1,100

Minimum

0

0

0

Mean

0.05

68.2

5.78

Runoff in 

acre-feet

3.0

4,200

4,200

Peak discharge (base, 100 cfs). Jan. 27 (1 p.m.) discharge not determined 

(3.79 ft).
ARROYO GRANDE BASIN 

Arroyo Grande at Arroyo Grande, Calif.

179

Location (revised) . Lat 35"07'30", long 120"34'05", In Plsmo Grant, on left bank at 

Arroyo Grande, San Luls Oblspo County, 0.7 mile upstream from U. S. Highway 101.

Drainage area. 106 sq ml.

Records available. December 1939 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Datum of gage is 97.77 ft above 

mean sea level, datum of 1929, supplementary adjustment of 1934. Prior to July 10, 

1947, at datum 0.50 ft higher.

Average discharge.--16 years (1940-56), 22.3 cfs (16,100 acre-ft per year); median of 

yearly mean discharges, 12' cfs (8,700 acre-ft per year).

Extremes. Maximum discharge during year, 2,650 cfs Jan. 25 (gage height, 8.53 ft); minimum daily, 0.4 cfs Nov. 2, Sept. 23.

1939-56: Maximum discharge, 5,370 cfs Jan. 15, 1952 (gage height, 11.97 ft); minimum daily, less than 0.1 cfs during several periods in August, September 1949.

Remarks.--Records good. Discharge measurements generally made twice a month. Many small 

and intermittent diversions by pumping from stream for irrigation above station.

Revisions (water years). WSP 931: 1940. WSP 1011: 1941, 1942(M).

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in" cubic feet per second)

(Shifting-control method used Dec. 24-28, Jan. 25 t« Peb. 25, 

Apr. 27 to May 15, Sept. 5-3O)

1.9 

2.2

1.0 1.6 Z.5 105

1.1 2.7 3.0 196

1.2 4.1 4.0 473

1.3 6.0 5.0 875

1.5 11 6.0 1,340

1-7 20

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

AC- ft

Oct.

0.7 i'.a . 8

1.9 

1.7

1.2

1.7

1.9

2.5

2.Z

1.3

1.0 

.7

2.2

2.4

2.5

2.6

ito

1.8

2.1

2.4

Z.I

1.7

1.6

2.1

2.5

1.9

2.0

2.1

1.7

57.9

1.87

115

Nov.

1.1

"JY . ^

1.0 

2.0

2.2

1.3

1.2

.6

1.0

1.7

1.7

1.7

6^2

3.8

4.1

3.8 

3.8

4.0

4.4

5.2

4.8

4.8

4.8

4.6

4.3

4.1

4.0

4.0

3.8

91.1

3.04

181

Dec.

4.1

4.1

3.8

4.4 

4.0

4.4

4.1

3.2

3.8

3.8

3.6

3.2

3.Z

3.5

4.3

4.3 

4.0

4.0

4.6

4.4

5.0

6.2

326

226

196

179

74

45

34

31

1,204.0

38.8

2,390

Jan.

27

24

24

23 

23

22

22

22

21

21

20

20 

20

19

20

19

18

18

18

18

11

17

18

17

1.160

921

785

310

196

141

112

4,113

133

8,160

Peb.

88

70

61

54 

48

45

42

40

35

37

36

35 

34

33

34

33

34 

34

32

29

28

28

39

44

38

35

34

33

32

1,165

40.2

2,310

Mar.

28

28 

26

24

23

22

a22

a21

a21

a20 

a20

a!9

a!9

a!8

18

18

18

17

16

17

17

16

16

15

15

14

11

14

14

609

19.6

1,210

Apr.

15

14

12

tt

12

12

12

11

11

19

H18

17

17

16 

16

16

15

15

14

14

14

14

16

16

16

16

16

447

14.9

887

Hay

16

16

16

16 

14

16

16

16

20

19

18

18 

16

17

15

12

tt

14

13

13

14

14

15

14

15

13

11

11

11

12

454

14.6

900

June

13

12

13

ii 

11

8.9

9.5

8.8

11

11

8.3

&1 

7.0

8.0

7.8

8.6

8.4 

8.9

8.0

8.6

7.2

7.2

8.6

8.4

7.7

6.8

8.8

6.9

6.8

6.9

267.9

8.93

531

July

 IP7 . 2

8.5

9.2 

6.8

5.5

5.0

6.6

6.4

5.2

3.9

4.3

5.1

4.8

6.1

6.6

5.7 

6.0

4.9

5.6

5.1

5.2

4.5

5.0

4.5

4.1

2.6

2*2.

3.3

4.1

6.1

169.9

5.48

337

Aug.

5.6

3.7

3.8

3.1 

3.4

4.4

3.4

2.5

2.5

3.6

5.7

4is

2.3

2.4

2.3

1.7 

2.2

2.0

1.9

3.8

3.6

2.0

3.1

4.2

3.2

2.4

2.1

3.3

2.4

1.4

98.2

3.17

195

Sept.

1.2

Z.8

4.8

5*1

5.0

4.1

3.4

4.1

2.5

1.3

1.3

1.1 

1.0

.9

1.3

.8

.9

1.0

.7

.6

.8

.5

JU*

.9

1.6

1.8

2.5

1.1

.6

l.Z

55.6

1.85

110

Calendar year 1955 : Max 326 Mln 0.1 Mean 8.67 Ao-ft 6,280

Water year 1955-56 : Max 1,160 Mln 0.4 Mean 23.9 Ac-ft 17,330

Peak discharge (base. 40 cfs). Dee. 24 (12m.) 812 cfs (5.17 ft)j Jan. 25 (4 p.m.) 2,650 efs 

(8.53 ft); Feb. 23 (9:30 p.m.) 46 cfs (2.19 ft). 

a No gage-height record; discharge interpolated or estimated on basis of weather records.
180 ARROYO DE LA. CRUZ BASIN

Arroyo de la Cruz near San Simeon, Calif.

Location. Lat 35°43'25", long 121°17'00", in Piedra Blanca Grant, on right bank 1.7 miles

 up's'tream from mouth and 7 miles northwest of town of San Simeon, San Luis Obispo County.

Drainage area. 41.4 sq mi.

Records available.--October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 22 ft (from topographic map).

Average discharge.--6 years, 55.6 cfs (40,250 acre-ft per year).

Extremes. Maximum discharge during year, 17,700 cfs Dec. 23 (gage height. 12.40 ft), from

 rating curve extended above 7,600 cfs on basis of slope-area determination of peak flow; 

no flow for several months.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow for several months each 

year.

Remarks. Records good.

Revisions (water years).--WSP 1245: 1951.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, In cubic

feet per second) 

(Shifting-control method used May 4 to July 8)

1.64

1.7

1.8

1.9

2.0 

2.2

Oct. 1 to Dec. 23

4 0 2.4

1.7 2.7

5.5 3.3

10 4.0

17 5.0

33

58

109

245

510

980

Dec. 23 to Feb. 23

1.6

1.7 

2.0 

2.5 

3.0 

3.5

55

63

95

164

280

465

4.0 

5.0 

6.0 

7.0 

8.0 

10.0

710 

1,360 

2,210 

3,300 

4;780 

9.05O

Feb. 23 to Sept.' 30

1.26

1.3

1.4

1.5

1.6

1.7 

1.9

.3

1.9

4.3

8.0

13

29

2.2 

2.5 

3.0 

3.5 

4.0 

5.0

68

122

236

415

660

1,360

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

O

0

0

Nov.

O

O

0

Dec.

0"0

0

0

0

*0

0

0

0

.9

8.4

8.9

8.4

7.4

6.9

5.9

5.5

5.1

4.7

734

122

*556

*7,080 *572To~

547

987

453

232

168

161

216

13,588.1

438

26,950

Jan.

212

218

*152

131

129

129

114

122

1O9

102

97

92

88

86

84

82

78

76

75

77

75

74

85

82

4,550

2,150

823

349

227

174

147

10,969

354

21,760

Feb.

128

114

*105

97

92

87

83

78

74

71

69

67

65

63

61

60

59

59

 So" 58

6O

332

1.18O

 IRQ

124

114

89

84

70

3,791

131

7,520

Mar.

62

SI

55

51

49

45

*42

40

37

36

34

32

30

30

29

28

26

25

25

24

*2'2 23

21

20

20

19

18

17

17

16

T6

967

31.1

1,920

Apr.

16

16

16

15

14

14

14

13

13

14

31

38

20

16

14

14

13

12

*11

11

10

9.8

9.8

10 9.3

"Si 108

44

28

22

663.9

22.1

1,320

May

20

18

18

22

20

18

16

16

53

4T

23

18

16

15

13

*12

12

12

11

11

11

11

11

11

10

9.3

8.9

8.4

871

8.4

8.4

490.8

15.8

973

June

7.6

77Z

6.8

6.8

6.4

5.6

5.2

4.9

4.5

4.3

3.7

3.7

3.5

3.2

3.0

2.5

2.3

2.1

2.1

*1.9

1.9

1.7

1.5

1.1

.7

.2

O0"

O

0

94.4

3.1

187

July

(*)

0

0

0

Aug.

(*)

0

0

O

Sept.

O

O

O

Calendar year 1955: Max 7,080 Mln 0 Mean 52.2 Ac-ft 37,800

Water year 1955-56: Max 7,080 Mln 0 Mean 83.5 Ao-ft 60,630

Peak discharge (base, l.OoO efs). Dee. 20 (6 a.m.) 1,59O cfs (5.88 ft); Dec. 23 (8 a.m.) 17,7OO 

cfs (12.4O ft); Dec. 26 (1p.m.) 2.51O cfs (6.30 f;t); Jan. 25 (7 a.m.) 14,900 cfs (11.70 ft); 

Feb. 23 (1 a.m.) 5,190 cfs (8.25 ft).

* Discharge measurement or observation of no flow made on this day.
SUR RIVER BASIN 181

Sur River at Big Sur, Calif.

Location. Lat 36°14'45", long 121°46'20", in SwfSWv sec. 29, T. 19 S., R. 2 E., on right 

bank at downstream side of bridge, 0.4 mile upstream from Post Creek and 2.6 miles 

southeast of Big Sur.

Drainage area. 46.9 sq mi.

Records available. March 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 400 ft (from topographic map). Prior to 

Qct. 1, 1951, wire-weight gage at site 0.9 mile downstream at different datum.

Average discharge.--6 years, 107 cfs (77,460 acre-ft per year).

Extremes. Maximum discharge during year, 5,220 cfs Dec. 23 (gage height, 11.05 ft); minimum, 8.5 cfs Sept. 11, 12.

1950-56: Maximum discharge, 7,000 cfs Nov. 19, 1950 (gage height, 11.0 ft, site and 

datum then in use, from graph based on gage readings), from rating curve extended above 

1,400 cfs by logarithmic plotting; minimum, 4.5 cfs Or 13-16, 1950.

Revisions. Figures of maximum discharge for the w<. ^r years 1952 and 1953 have been 

revised to 4,150 cfs Jan. 14, 1952 (gage height, 9.90 ft) and 2,920 cfs Dec. 7, 1952 

(gage height, 8.52 ft), superseding figures published in WSP 1245 and 1285, respectively.

Remarks.--Records good. No regulation or diversion above station.

Revisions The figures of peak discharge for the water year 1952 have been revised as 

shown below, superseding'those published in WSP 1245.

Revised peak discharge.--11951-52; Dec. 28 (7 p.m.) 3,180 cfs ('8.82 ft); Jan. 12 

(6:30 a.m.) 3,290 cfs (8.94 ft); Jan. 14 (3:30 p.m.) 4,150 cfs (9.90 ft); Jan. 25 

(5 a.m.) 3,120 cfs (8.76 ft).

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Oct. 1 to Dec. 19, Aug. 27 to 

Sept. 30)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 30

2.4

2.5 

2.8 

3.1 

3.5

5.8

11

30

57

107

4.0 

4.5 

5.0 

5.5

200

343

540

790

2.36

2.4

2.7

3.0

3.5

4.0

9.1

32

61

128

230

4.5 

5.0 

6.0 

8.0 

10.0

380

590

1,080

2,500

4,240

Discharge, in cubic feet per second, water year October 1955 to September 1936

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

10

10

9.8

9.8

9.8

10

11

11

12

13

13

13 

13

13

14

14

14

15

16

15

16

16

15 

15

14

14

15

15

15

14

14

410.4

13.2

814

Nov. '

15

T5

15

15

16

16

16

15

15

15

15

15 

24

31

21

21

24

21

20

20

26

22

21 

22

20

20

20

20

20

20

576

19.2

1,140

Dec.

43

37

29

29

30

*57

42

35

44

36

31

29 

29

27

26

26

25

59

245

687

234

439

*4, 120 

1,890

901

1,230

*1,000

685

509

598

780

13,922

449

27,610

Jan.

820

790

635

527

532

492

472

496

424

376

352

320 

289

272

275

270

248

230

*218

24?

225

228

245 

238

1.490

1,450

1,360

1,020

830

695

608

16,669

538

33,060

Feb.

522

464

416

373

342

310

280

262

245

*230

212

201 

194

185

175

169

161

156

154

2(55

190

663

1.150 

640

518

452

396

359

331

9,938

343

19,710

Mar.

304 250-

262

248

238

222

210

198

190

181

175

169 

159

156

149

142

136

135

131

126

122

*119

118 

114

112

109

105

102

99

99

Qft gO;

5,008

162

9,930

Apr.

99

94

91

90

87

85

82

80

80

86

158

118 

103

99

92

90

85

82

*78

77

74

72

72 

53- 71

160

171

TSff

124

114

2,933

97.8

5,820

May

107

100

102

116

103

100

96

96

100

94

90

87 

86

82

81

*78

77

77

76

73

71

69

69 

67

65

63

63

61

62

61

60

2,532

81.7

5,020

June

59

55

56

54

54

52

50

49

48

47

45

43 

43

43

43

42

41

40

39

*39

38

38

37 

36

35

35

34

30

29

2?

1, 286

42.9

2,550

July

32

3T

32

30

29

28

27

26

26

27

27

28 

29

29

29

27

26

*26

26

25

25

24

24 

24

23

22

22

23

22

21

21

812

26.2

1,610

Aug.

21

20

20

20

22

21

18

20

19

*19

20

21 

21

20

19

19

19

19

19

18

18

17

16 

16

16

16

18

18

19

18

18

585

18.9

1,160

Sept.

Te- 17

ie

16

16

16

16

16

13

11

9.6

10e

10

10

10

9.6

10

11

11

10

10 

9.6

9.6

9.6

9.6

9.6

9.6

10

350.5

11.7

695

Calendar year 1955: Max 4,120 Mln 8.3 Mean 77.1 Ac-ft 55,810

Water later year year 1955-56: 1955-56: Max Max 4,120 4,120 Mln Mln 9.1 9.1 Mean Mean 150 150 Ac-ft Ac-ft 109,100 109,100

Peak discharge (base. 700 efs).--Dec. 20 (6 a.m.) 1,070 cfs (5.98 ft); Dec. 23 (5 a.m.) 5,220 cfs 

11.05 ft): Dec. 26 (11 a.m.) 1,840 cfs (7.14 ft): Jan. 1 (7 p.m.) 1,000 cfs (5.82 ft); Jan. 25 

7:30 a.m.) 2,640 cfs (8.18 ft); Feb. 22 (10 p.m.) 2,630 cfs (8.16 ft).

* Discharge Discharge measurement measurement made on this dav.y 

493801 O - 59 - 13
182 SALINAS RIVER BASIN

Salinas River near Pozo, Calif.

Location.--Lat 35°18', long 120°24 I , in SEi sec. 18, T. 30 S., R. 15 E., on right bank

0.4 mile downstream from highway bridge, 1.5 miles downstream from Pozo Creek, 1.7 miles 

west of Pozo, and 7 miles upstream from Salinas Dam.

Drainage area. 72.5 sq mi.

Records available.--July 1942 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,350 ft (from topographic map).

Average discharge. 14 years, 14.0 cfs (10,140 acre-ft per year); median of yearly mean 

*discharges, 7.4 cfs (5,360 acre-ft per year).

Extremes.--Maximum discharge during year, 3,920 cfs Jan. 25 (gage height, 10.65 ft); no 

flow Oct. 1-17.

1942-56: Maximum discharge, 5,800 cfs Jan. 21, 1943 (gage height,- 13.35 ft), from 

rating curve extended above 2,500 cfs on basis of storage Increase in Salinas Reservoir 

and by logarithmic plotting; no flow Sept. 11.to Oct. 17, 1955.

Remarks. Records fair. No storage or diversion above station. Water is stored in Salinas 

Reservoir below station.

Rating tables, water year 1955-56, except period of indefinite stage-discharge

relation (gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Jan. 25-27)

3.36

3.4

3.5

3.6

3.7 

3.9 

4.2

Oct. 1 to Jan. 25

4.5 

5.0 

5.5 

6.0 

7.0 

8.0

.1

1.1

3.8

8.8

23

55

98

206

340

520

980

1,580

3.2

3.3

3.4

3.5 

3.7

Jan. 25 to Sept. 30

0.3

1.9

5.8

12

34

82

196

346

730

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24 

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

0 

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0 } '

L e.2

V e.3

1"

3.6

0.12

7.1

Nov.

> eO.5

J

f e.6 i1 ... ... J

el.O

. el.l

(*)

24.6

0.82

49

Dec.

. el.l

(*)

. 1.5

3

5

20

700

SCO 

300

*250

109

63

40

28

285

2,165.9

69.9

4,300

Jan.

19 

14

12

10

 7.1

6.0

5.4

5.1

4.8

4.6

4.4

4.2

4.1

4.0

3.8

3.6

3.5

3.4 

3.3

3.3

3.2

3.1

37T

3.1 

*1,260

*lj470

265

131 

80

56

4,243.1

137

8,420

Feb.

*42 

33 

27

23

20

18

16

13

10

9.4

8.7

8.1

7.4

6.8

6.3

5.8

5.3

4.8 

4.4

4.4

4.4

4.4

 17

15 

12

11

10

8.7

8.1

364.0

12.6

722

Mar.

8.1

774

6.8

6.8

6.8

6.3

5.8

5.8

*5.3

5.3

5.3

5.3

5.3

4.4

4.4

4.4

4.4

3.9 

3.9

3.9

3.9

3.5

3.5

3.5 

3.5

3.5

2.8

2!s 

2.8

2.8

145.0

4.68

288

Apr.

2.8 

2.8 

*2.8

2.8

2.5

2.5

2.5

2.5

2.5

2.8

~~8~. 13 7

5.8

4.4

3.9

3.5

3.5

3.1 

2.8

2.8

2.8

2.8

2.8

2.8 

*2.8

4.4

5.3

5.3

5.8 

5.3

118.1

3.94

234

May

4.4 

3.9 

3.9

3.1

3.1

3.1

2.8

3.5

3T9~ 4.8

3.9

3.5

3.1

*2.8

2.5

2.5

2.5

2.5 

2.5

2.5

2.5

2.5

2.5

2.5 

2.5

2.5

2.5

2.5

2.5 

2.5

2.5

92.3

2.98

183

June

ftf 2.5

2.2

2.2

2.2

2.2

2.2

2.2

1.9

1.9

 1.9

1.6

1.6

1.6

1.6

1.4

1.4 

1.4

1.4

1.2

1.2

1.2

fci

1.1 1.1 1.1 1.1 1.1

49.7

1.66

99

July

1.2 

T72

1.2

1.2

1.1

1.1

1.1

.9

.9

.9

*.9

.9

.9

.9

.9

.9

.9

.8 

.6

.6

.6

.6

.5

75

.5

.5

.5

.5

.5 

.5

.5

24.8

0.80

49

Aug.

0.5 

*.5 

.5

.5

.5

.4

.4

.5

.5

.4

.4

.5

.4

.5

.5

.5

.5

.5 

.5

.5

.4

.5

.4

.4 

.5

.5

.5

*.5

.5

.6

Q

15.1

0.49

30

Sept.

0.8 

.6 

.6

.5

.5

.5

.5

.5

.4

.5

.5

.5

.5

.4

.4

.4

.4

.4 

.4

.4

.4

.4

.4

.4 

.4

tt

.3

.3 

.3

13.2

0.44

26

Calendar year 1955: Max 700 Min 0 Mean 8.73 Ao-ft 6,320

Water year 1955-56 : Max 1,470 Min 0 Mean 19.8 Ac-ft 14,410

Peak discharge (base, 100 ofa). Dec. 23 (about 1 p.m.) 815 ofs (6.67 ft); Jan. 25 (1 p.m.) 3,920

ofs (10.65 ft).

* Discharge measurement or observation of no flow made on this day.

e Stage-discharge relation indefinite; discharge estimated on basis of 2 discharge measurements

and 1 observation of no flow.

Pozo and Jack Creek near Templeton.
SALINAS RIVER BASIN 183

Toro Creek near Pozo, Calif.

Location (revised). Lat 35°19i20", long 1208 25'20", in SW£ sec. 12, T. 30 S., R. 14 E., 

on right bank 50 ft upstream from bridge, immediately upstream from mouth, and 3 miles 

northwest of Pozo.

Drainage area. 9.5 sq mi, approximately.

Records available. June 1942 to September 1956 (low-water records only).

Page.--Water-stage recorder and 90" V-notch weir. Altitude of gage is 1,310 ft (from 

Topographic map).

Extremes. Minimum discharge recorded during year, 0.04 cfs several days in August. 

T942-56: Minimum discharge recorded, 0.02 ofs at times during some summers.

Remarks.--Records fair. Flow partly regulated at swtoning pool above station.

Rating table, water year 1955-56 (gage height. In feet, 

and discharge, In oubio feet per second)

1.19

1.20

1.22

1.30

0.04 

.05 

.06 

.13

1.38

1.44

1.48

0.23 

.33 

.41

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

eO.15

(*)

4.65

0.15

9.2

NOV.

_

-

-

Dec.

_

-

-

Jan.

_

-

-

Feb.

_

-

-

Mar.

_

-

-

Apr.

-

-

-

-

-

-

-

_

-

.

-

_

-

_

.

-

-

.

-

_

-

-

-

*0.30

.41

.35

.31

.31

.30

_

-

-

May

0.28 

.28

.20

.22

.28

.28

.28

.33

.43

7ST

.37

.28

.16

 755-

.23

.25

.25

.23

.25

.23

.23

.23

.23

.23

.23

.23

.23

.23

.25

25

8.01

0.258

16

June

0.23 

.20

.19

.16

.11

.10

.11

.14

.19

.16

.11

*.14

.14

.14

.15

.15

.14

.11

.35

70T

.07

.09

.14

 al.O

4.09

0.136

8.1

July

 aO.10

*a.lO

> a. 07

2.50

0.081

5.0

Aug.

aO.06

,05

.07

.07

.07

.07

.07

.07

.07

.07

.07

.07

.05

.05

.04

.04

.04

.04

.05

.04

.06

.05

.05

.06

.05

.07

*.08

T§t .*07

1.87

0.060

3.7

Sept.

T5B" 0.05

.06

.07

.06

.07

.07

.07

.05

.05

.07

.08

.10

.11

.09

.09

.09

.07

.09

.12

.13

TIT

.10

.08

.10

.12

.09

.09

.09

.06

2.48

0.083

4.9

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft

* Discharge measurement made on this day.

a Ho gage-height record; discharge Interpolated or estimated on basis of 1 discharge measurement, 

e Stage-discharge relation Indefinite; discharge Interpolated or estimated on basis of 1 discharge 

measurement.
184 SALINAS RIVER BASIN 

Salinas Reservoir near Pozo, Calif.

Location. Lat 35°20', long 120°30i, in sec. 5, T. 30 S., R. 14 E., at left end of dam on

 Salinas River, 2 miles upstream from Pilitas Creek and 7.5 miles northwest of Pozo.

Drainage area. Ill sq mi.

Records available. December 1941'to September 1956.

Gage.--Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Prior to Mar. 9, 1942, staff gage at same site and datum.

Extremes. Maximum contents during year, 27,200 acre-ft Jan. 27 (elevation, 1,302.48 ft); 

minimum, 14,700 acre-ft Dec. 16-21.

1941-56: Maximum contents, 28,600 acre-ft Mar. 15, 1952 (elevation, 1,304.26 ft); 

minimum, 1,730 acre-ft Nov. 6-10, 1943.

Remarks.--Reservoir is formed by concrete-arch dam, outlet closed Dec. 6, 1941. Usable

 capacity, 26,000 acre-ft between elevations 1,220.3 ft (bottom of outlet pipe) and 

1,301.0 ft (spillway crest) above mean sea level. Water diverted at dam into pipeline 

to small reservoir 10 miles below, from which it is pumped to Camp San Luis Obispo and 

city of San Luis Obispo for water supply; water is also released down natural channel of 

river. Records show usable contents at 12 p.m. Record of diversion for the water year 

1956 by county of San Luis Obispo is given in the table below.

Capacity table, water year 1955-56 (elevation. In feet, and 

contents, In acre-feet)

1.285

1.286

1.287

1.288

1.289

1.290

1.291

15,300

15,900

16,500

17,100

17,700

18,300

18,900

1.292

1.293

1.294

1.295

1.296

1.297

1.298

19,600

20,300

21,000

21,700

22,400

23,100

23,800

1.299

1.300

1.301

1.302

1.303

24,500

25,200

26,000

26,800

27,600

Contents, In acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

(t)

*Kfloat.

15.600 

15,500

15,500

15,500

15,500

15,500

15,400

15,400

15,400

15,400

15,400

15,400

15,300

15,300

15,300

15,300

15,300

15,300

15,200

15,200

15,200

15, 200

15,200

15,200

15,200

15.100 

15,100

15,100

15,100

15,100

15,100

1,284.54

-500

274

Nov.

W

is! ooo

15,000

15,000

15,000

15,000

15,000

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14,900

14.800

14) 800

14,800

14,800 

14, 800

14,800

14, 800

14, 800

1,284.00

-300

199

Dec.

. 14, 800 

14, 800

14, 800

14,800

14, 800

14, 800

14, 800

14,800

14, 800

14, 800

14, 800

14, 800

14, 800

14, 800

14, 800

14.700

14, 700

14,700

14, 700

14, 700

14,700

14,800

15, 000

17,100

17,800

18, 600 

19,100

19,200

19,300

19,400

19.500

1,291.79

+4,700

155

Jan.

19.500 

19,500

19, 600

19,600

19,600

19,600

19,600

19,600

19,600

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

19,700

22, 800

26,000 

27.200

26,700

26,200

25,700

25,200

1,300.03

+5,700

129

Feb.

24.700 

24,200

24,000

23,900

25.800

23,800

23,800

23, 800

23,800

23,900

23,900

23,900

23,900

24,000

24,000

24,000

24,000

24,000

24,000

24,000

24,000

24,100

24,100

24,200

24,200

24,200 

24,300

24,300

24,300

_____ _

1,298.72

-900

138

Mar.

24.500 

24,306

24,300

24,300

24.400

24,400

24,400

24,400

24,400

24, 400

24,400

24,400

24, 400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24,400

24, 400 

24,400

24,400

24,400

24,300

24,300

1,298.76

0

196

Apr.

24.500 

24,300

24,300

24,300

24,300

24,300

24, 300

24,300

24,300

24,300

24, 500

24,500

24, 500

24,500

24,500

24,500

24, 500

24, 500

24,500

24,500

24, 500

24, 500

24, 500

24, 500

24,600

24, 600 

24, 600

24, 600

24,600

24, 600

-

1,299 . 18

+300

174

May

24, 600 

24, 600

24, 600

24,600

24, 600

24, 600

24, 600

24, 600

24. 700

24, 700

24,700

24,700

24,700

24,700

24,600

24,600

24, 600

24,600

24, 600

24, 600

24,600

24, 600

24,600

24.500

24, 566

24, 500 

24,500

24, 500

24,500

24,500

24,500

1,298.95

-100

198

June

24. 500 

24,400

24,400

24, 400

24, 400

24,400

24,400

24,300

24, 300

24, 300

24, 300

24, 300

24, 200

24, 200

24, 200

24,200

24,200

24, 100

24, 100

24, 100

24, 100

24, 000

24,000

24,000

24,000

24,000 

25.900

23,900

23,900

23,900

1,298.09

-600

299

July

25.800 

23,800

23,800

23,800

23,700

23,700

23,100

22,300

21,700

21,600

21,600

21,600

21,500

21,500

21,500

21,500

21,500

21,400

21,400

21,400

21,400

21,300

21,300

21,300

21,300

21,200 

21,200

21,200

21,200

21.100

21, 106'

1,294.14

-2,800

309

Aug.

21.100

21,000

21,000

21,000

21,000

20,900

20,900

20,900

20,900

20,800

20,800

20,800

20,800

20,700

20,700

20,700

20,700

20,600

20, 600

20,600

20,600

20,500

20,500

20,500

20,400

20,400 

20,400

20, 400

20.500

20, 366

20,300

1,293.00

-800

326

Sept.

20.500 

20, 300

20,200

20, 200

20, 200

20,200

20, 100

20, 100

20, 100

20, 100

20,000

20, 000

20,000

20, 000

19,900

19,900

19,900

19,900

19,900

19,800

19,800

19,800

19,800

19,700

19,700

19,700 

19,700

19.600

19 i 600

19,600

1,292.00

-700

301

Calendar year.................... * +700

Water year 1955-56............... * +4,000 tt2,700

t Elevation, In feet, at and of month.

* Change In contents In aare-feet.

tt Diversion, In acre-feet, by county of San Luis Obispo.
SALINAS RIVER BASIN 185

Salinas River above Pllitas Creek, near Santa Margarita, Calif.

Location.--Lat 35°21', long 120°31', in M£ sec. 6, T. 30 S., R. 14 E., on downstream side

 of right bank bridge pier, 200 ft upstream from Pilitas Creek and 6 miles southeast of 

Santa Margarita.

Drainage area.--112 sq mi.

Records available. July 1942 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 1,150 ft (from topographic map).

Average discharge.--14 years, 13.0 cfs (9,410 acre-ft per year).

Extremes. Maximum discharge during year, 625 cfs Jan. 27 (gage height, 2.90 ft); no flow 

at times during several months.

1942-56: Maximum discharge, 2,200 cfs Mar. 15, 1952 (gage height, 4.99 ft), from 

rating curve extended above 740 cfs on basis of computation of peak flow over dam; no 

flow at times during 1944, 1947-56.

Remarks.--Records good. Flow regulated by Salinas Reservoir beginning in 1941 (see pre-

 ceding page). Small amount of water diverted to Camp San Luis Obispo and city of 

San Luis Obispo.

Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Shifting-control method used Oct. 7 to Nov. 7, July 7-28, 

Aug. 29, 30, Sept. 13-15, 18-30)

3.0

6.4

11

1.0 

1.2 

1.4 

1.6 

2.0 

3.0

71

110

230

670

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac-ft

Oct.

0.2

.2

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

ts

.3

.3

.3

.2

.2

.3

.3

.3

.3

.3

.3

7.3

0.24

14

Nov.

0.3

.3

.3

.4

.4

.4

.4

.4 

.4

.4

.4

.4

.7

1.7

.7

.4

.2

.1

.1 

.1

.1

.1

0

.4

.5

.6

.6

*.5

.5

.5

12.3

0.41

24

Dec.

0.8

.9

.7

1.3

.9

1.0

.6

.2 

.2

.1

.1

*.l

.1

.1

.1

.1

.1

.1

2.

.2

.1

3.7

37

7.6

13

5.3

2.7

2.2

1.5

2.4

83.3

2.69

165

Jan.

1.7

1.5

1.3

1.3

1.5

1.3

1.3

H1.3

1.3

1.3

1.2

1.3

1.3

1.3

1.5

1.7

2.2 

2.4

3.0

2.4

2.7

2.7

27

34

*478

552

442

342

334

2,248.9

72.5

4,460

Feb.

*334

329

187

97

95

65

27

8.2 

1.5

1.0

.9

.9

.9

.9

.9

.9

.9

.9

.9 

.8

.8

.9

1.9

1.5

1.0

1.0

.9

.9

.9 - -----

1,163.4

40.1

2,310

Mar.

0.8

.7

.6

.6

.6

.6

.6

.5

.6

.6

.6

.6

.5

.5

.5

.4

.4

.4

.4 

.4

.3

!4

.3

.3

.3

.3

.3

.3

.3

.3

.3

'14.3

0.46

28

Apr.

0.3

.4

**.4

.3

.3

.3

.3

If

.2

1.5

1.9

1.0

.8

.7

.5

.5

.6

.4 

.4

.3

.3

.2

.2

**.2

1.2

1.3

.8

.5

.4

16.6

0.55

33

May

0.3

.3

.2

.2

.2

.2

.2

.2

.8

.9

.6

.4

.3

**.2

.2

.2 "!T

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

6.9

0.22

14

June

oa

.1

.1

SL

0

0

0

0 

0

0

0

*0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

July

a0

0

0

1.7

2.7

*262

368 

310

1.9

.5

.6

.6

.5

.6

.6

.6

.6

.6 

.6

.6

.6

.6

.6

.5

.2,

.2

.1

.1

.1

.1

955.8

30.8

1,900

Aug.

_0_J

**.!

.1

.1

.1

.1

o

0

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

.1

.1

**.!

.1

.1

.1

2.7

0.09

5.4

Sept.

oa

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

ti

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

3.4

0.11

6.7

Calendar year 1955: Max 351 Mln 0 Mean 3.38 Ac-ft 2,450

Water year 1955-56: Max 552 Mln 0 Mean 12.3 Ac-ft 8,960

Discharge measurement or observation of no flow made on this day. 

* Field estimate made on this day.
186 SALINAS RIVER BASIN

Jack Creek near Templeton, Calif.

Location. Lat 35"34 I , long 120°48 I , in Paso de Robles Grant, on left bank 1.4 miles upstream from mouth, 1.8 miles northwest of Oakdale school, and 5.6 miles west of Templeton, San Luis Obispo County.

Drainage area. 25.4 sq mi.

Records available. October 1949 to September 1956.

Sage. Water-stage recorder. Altitude of gage is 980 ft (from topographic map).

Average discharge. 7 years, 13.3 cfs (9,630 acre-ft per year).

Extremes. Maximum discharge during year, 5,040 cfs Jan. 25 (gage height, 9.56 ft), from 

rating curve extended above 1,500 cfs on basis of slope-area determination of peak flow; 

no flow for several months.

1949-56: Maximum discharge, that of Jan. 25, 1956; no flow for several months each 

year.

Remarks. Records good. No regulation. Small diversions above station for irrigation. 

Revisions (water years). WSP 1395: 1950(M), 1952, 1953(M).

Rating tables, water year 1955-56 .(gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 25 Jan. 26 to Sept. 30

1.34

1.4

1.5 

1.7

1.9

2.0

2.1 

2.3 

2.5

.1

.4

1.3

3.2

4.8

7.0

14

23

2.8 

3.2 

3.6 

4.0 

4.5 

5.0 

6.0 

7.0

47

98

172

274

432

635

1,150

1,910

1.3

1.6

1.7

1.8

1.9

2.0

2.1

0 

.1 

.3 

.7

1.2

2.2 

2.4 

2.6 

2.8 

3.0 

3.5 

4.0

6.0

14

27

42

65

150

274

Note. Same as preceding 

table above 4.0 ft.

Discharge, In euhle feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

0

0

0

Dec.

Q.

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

7.5

4.1

8.2

«834

508

136

315

136

68

42

45

210

2,313.8

74.6

4,590

Jan.

75

68

45

34

29

26

21

21

18

16

15

14

13

12

11

11

9.6

8.4

8.1

8.4

7.8

8.4

7.8

*1.400

680

391

167

108

75

59

3,374.7

109

6,690

Feb.

46

39

*34

29

27

23

20

18

16

15

14

13

12

11

10

9.4

8.6

8.6

7.8

7.5

7*2

13

209

68

44

37

30

27

26

830.1

28.6

1,650

Mar.

22

*20

17

16

15

14

12

12

11

11

9.8

9.0

8.2

7.8

7.2

6.9

6.6

6.3

6.0

5.7

5.4

5.2

5.2

4.9

4.7

4.5

4.3

4.1

3.9

*3.7

ii_5

272.9

8.80

541

Apr.

3.4

3.4

3.2

3.0

2.9

2.8

2.8

2. 6

zTS

3.0

12

21

11

8.2

6.9

6.6

5.7

5.4

5.2

4.3

3.7

3.5

3.4

3.2

3.7

51

40

24

*17

14

279.5

9.32

554

May

12

11

9.4

11

9.0

8.6

7.8

6.9

15

12

9.4

7.8

6.9

6.0

5.7

5.2

4.7

4.3

*4.1

3.9

3.7

3.4

3.7

3.4

3.2

3.0

3.2

3.2

3.2

3.0

2 8

196.5

6.34

390

June

lil

2.4

2.0

1.9

1.8

1.6

1.4

1.2

1.2

1.1

1.1

1.0

 1.1

.9

.8

.8

.6

.5

.5

.6

.7

.6

.6

.6

.6

.6

.5

.5

.5

.6

30.9

1.03

61

July

0.6

.5

.4

.5

.4

.3

.4

.4

.4

.5

.4

.3

*.4

.4

.5

.4

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

10.1

0.33

20

Aug.

£4

.2

*.2

.2

.2

.1

,1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.0

0

0

1.3

0.04

2.6

Sept.

0

0

0

Calendar year 1955: Max 834 Min o Mean 11.6 Ac-ft 8,390

Water year 1955-56: Max 1,400 Min 0 Mean 20.0 Ac-ft 14,500

Peak discharge (base. 500 cfs). D

(5.47 ft); Dec. 31 (1 a.m.) 684 cfs 

(3 a.m.) 612 cfs (4-95 ft).

so. 23 (9 a.m.) 1,500 cfa (6.50 ft); Dec. 26 (11 a.m.) 855 cfs 

5.11 ft); Jan. 25 (8;30 a.m.) 5,040 cfs (9.56 ft); Feb. 23

* Discharge measurement or observation of no flow made on this day.
SALINAS RIVER BASIN 187

Salinas River at Paso Robles, Calif.

Location. Lat 35°37'40", long 120°41'05", in Paso de Robles Grant, on downstream side of

 left pier of bridge on State Highway 41 at Paso Robles, San Luis Obispo County, 3.5 

miles upstream from Huerhuero Creek.

Drainage area. 389 sq mi.

Records available.--October 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 670.61 ft above mean sea level (levels by

 Corps of Engineers). Prior to June 14, 1951, wire-weight gage at same site and datum.

Average discharge. 17 years, 101 cfs (73,120 acre-ft per year); median of yearly mean 

discharges, 54 cfs (39,100 acre-ft per year).

Extremes. Maximum discharge during year, 12,000 cfs Jan. 25 (gage height, 16.73 ft), from

 rating curve extended above 7,000 cfs by logarithmic plotting; no flow for several 

months

1939-56: Maximum discharge, 14,200 cfs Mar. 9, 1943 (gage height, 16.2 ft), from 

rating curve extended above 6,000 cfs on basis of velocity-area studies and logarithmic 

plotting; no flow during several months in each year.

Maximum stage known, 16.9 ft during flood of Feb. 10-13, 1938.

Remarks. Records fair. Flow regulated by Salinas Reservoir beginning in 1941 (see p. 184) 

Revisions (water years).--WSP 981: 1942.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Feb. 23)

5.1

5.2

5.3

5.4

5.5

5.6 

5.8 

6.0 

6.3

Oct. 1 to Feb. 22 Feb. 23 to Sept. 30

0

.5

2.0

4.0

7.0

12

28

53

113

7.0

7.5

8.0

9.0

10.0

12.0

13.0

195

327

515

740

1,300

2,000

4,190

5,640

5.76

5.8 5'.9

6.0

6.1

6.2

6.3

.1

.4

1.0

3.0

7.0

14

6.4

6.5 

6.7 

7.0 

7.5 

8.0

84

180

390

650

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

C)

0

0

0

Nov.

(*)

0

0

0

Dec.

o

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

*371

*2.150

1,190

863

962

385

225

160

516

6,822

220

13,530

Jan.

359

295

232

*198

154

146

133

118

113

106

99

90

84

74

76

76

72

70

65

63

62

58

53

 52

*4.850

3,340

3,410

1,690

1,230

939

810

19,097

616

37,880

Feb.

*750

695

676

582

491

455

417

381

352

331

316

298

261

274

265

255

245

238

232

228

222

219

411

*304

236

196

163

143

9,792

338

19,420

Mar.

140

124

111

102

99

90

S7

*82

84

a70

V

1

> aso i < '

a40

830

 24

22

1,955

63.1

3,880

Apr.

23

23

19

17

12

12

13

11

12

10

21

*150

111

84

76

72

66

62

51

45

34

30

*30

27

26

49

*9S

96

S2

69

1,410

47.0

2,800

May

55

47

45

47

51

45

43

43

49

59

57

51

47

*43

39

34

28

24

21

17

15

11

7.7

7.0

*-6

5.4

5.8

7.0

5.0

4.6

5.0

923.1

29.8

1,830

June

2.*6 4.2

1.8

2.0

2.0

1.0

.8

.6

.5

.4

.4

.5

*.4

.3

.7

.2

0

0

0

0

0

0

0

0

0

0

0

.2

.4

0

19.0

0.63

38

July

£

0

0

0

0

0

0

0

0

ZL

22

2.2

.9

.1

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

52.2

1.68

104

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955 : Max 2,150 Mln o Mean 37.5 Ac-ft 27,140

Water year 1955-56 : Max 4,S30 Mln o Mean 109 Ac-ft 79,480

Peak discharge (base. 1.100 efs). Dec. Z 4 (8 a.m.) 2,900 cfs (10.95 ft); Dec. 26 (9p.m.) 1,710 cfs 

(9.62 ft); Jan. 25 (3:30 p.m.) 12,000 cfs (16.73 ft).

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and normal recession.
188 SALINAS RIVER BASIN

Estrella Creek near Estrella, Calif.

Location. Lat 35°42'35", long 120°38120", in NWiuw£ sec. 36, T. 25 S., R. 12 E., on right 

bank 0.2 mile downstream from mouth of Ranchito Canyon and 1.9 miles northwest of 

Estrella.

Drainage area. 922 sq mi, not including Carrizo Plains. 

Records available. October 1954 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 710 ft (from topographic map).

Extremes. Maximum discharge during year, 1,310 cfs Jan. 25 (gage height, 3.92 ft), from 

rating curve extended above 330 cfs on basis of slope-area determinations at gage 

heights 3.33 and 3.92 ft; no flow for several months.

1954-56: Maximum discharge, that of Jan. 25, 1956; no flow for several months each 

year.

Remarks. Records good: Pumpage from wells along creek for irrigation affects flow at this 

station.

Rating table, water year 1955-56 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used Jan. 25)

1.9

2.0

2.1

2.2

2.3

7.6

15

28

2.3

2.4 

2.6 

3.0 

3.2

153

370

520

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

*.6

1.2

1.5

1.5

1.9

2.3

*2.3

2.7

2.7

2.7

5.8

66

*374

100

41

22

17

15

*43

703.2

22.7

1,390

Jan.

53

38

18

13

11

11

10

9.7

9.0

9.0

8.3

8.3

7^6

*7.6

8.3

8.3

7.6

7.6

7.6

8.3

9.0

8.3

9.0

9.0

*156

*420

142.

213

66

31

19

1,643.5

53.0

3,260

Feb.

16

14

*13

13

12

12

11

9.7

9.7

9.7

9.7

9.0

9.0

9.0

9.0

8.3

8.3

8.3

8.3

7.6

7.6

7.6

8.3

*9.7

10

9.7

9.0

8.3

8.3 --_..

285.1

9.83

565

Mar.

!*£.

7.6

7.0

6.4

6.4

6.4

6.4

6.4

6.4

5.8

5.8

5.8

4.7

4.7

4.2

4.2

4.2

4.2

*4.2

4.2

4.7

4.7

4.2

4.2

4.2

5.6

3.6

3.6

3.6

4.2

4.2

157.4

5.08

312

Apr.

3.6

3.6

3.6

3.6

4.2

4.2

4.2

4.2

4.2

4.2

5.2

7.0

S^i

8.3

8.3

8.3

7.0

7.0

6.4

5.8

5.2

4.2

3.2

2.7

2.7

2.7

*2t2

2.3

2.7

2.7

141.9

4.73

281

May

3.2

3.2

2.7

2.7

2.3

2.3

1.9

1.9

2.3

2.3

3.6

3.6

3.6

3.2

2.7

1.9

*1.2

.6

.4

.2

0

0

0

0

0

0

0

0

0

0

0

45.8

1.48

91

June

(*)

(*)

0

0

0

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 374 Mln 0 Mean 5.37 Ac-ft 3,880

Water year 1955-56: Max 442 Mln 0 Mean 8.13 Ac-ft 5,90O

Peak discharge (base. 200 efs). Dec. 25 (6 a.m.) 637 cfs (3.33 ft); Jan. 25 (11 p.m.) 1,310 cfs 

(3.92 ft;.

* Discharge measurement or observation of no flow made on this day.
SALINAS RIVER BASIN 189

Nacimiento River near Bryson, Calif.

Location. Lat 35°48'06", long 121 0 06'50", in NW£ sec. 33, T. 24 S., R. 8 E., on right 

bank 0.6 mile upstream from Turtle Creek, 1.6 miles west of Bryson, and 10 miles southwest of Lockwood.

Drainage area. 140 sq mi.

Records available. October 1955 to September 1956. Records for February to April 1901, 

published in WSP 66 and 75, have been found to be unreliable and should not be used.

Gage. Water-stage recorder. Altitude of gage is 860 ft (from topographic map).

Extremes. Maximum discharge during year, 30,300 cfs Dec. 23 (gage height, 24.63 ft), from 

rating curve extended above 13,000 cfs on basis of slope-area determination of peak 

flow; no flow for several months.

Remarks. Records good. No storage or diversion above station. 

Revisions. See Records available.

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

3.7

3.8

3.9

4.0

4.1

4.2 

4.4 

4.6

0

.2

.5

1.5

3.0

5.0

11

27

4.8

5.0

6.0

7.0

8.0

12.0

18.0

70

135

560

1,110

1,840

6,700

16,600

3.85

3.9

4.0

4.1

4.2

4.3

.4

1.7

5.5

12

27

4.5 

4.7 

5.0 

5.5 

6.0

95

165

340

560

Discharge, In cubic feet per second,

Note. Same as preceding 

table above 6.0 ft.

water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(")

0

0

0

Nov.

(*)

0

0

0

Dec.

0

75

0

0

39

87

79

*26

26

3O

24

2O

16

14

13

12

11

12

147

1,750

*399

572

*16.000

6,970

2,010

4,560

*2,110

1,070

730

894

1,790

39,411

1,271

78,170

Jan.

1,160

1,030

760

600

545

545

429

447

384

344

*304

268

237

212

192

180

158

142

132

140

138

120

138

138

*6,400

4,760

3,320

1,45O

990

755

615

27,033

872

53,620

Feb.

496

416

364

*316

282

251

220

195

174

158

148

138

128

120

109

103

93

91

88

148

132

515

2,710

859

595

496

408

*356

324

10,433

360

20,690

Mar.

286

258

234

216

198

180

165

158

148

140

132

125

118

113

105

99

93

90

84

84

81

77

75

72

70

68

63

62

*6O

58

§2.

3,769

122

7,480

Apr.

57

55

53

52

50

48

46

45

43

45

213

180

101

81

72

67

62

58

53

50

48

46

43

41

59

344

312

*183

138

111

2,756

91.9

5,470

May

95

84

77

90

79

72

68

68

208

152

118

101

88

81

74

68

63

*57

53

52

50

45

43

41

40

38

38

36

35

35

33

2,182

70.4

4,330

June

33

31

3O

28

27

27

25

24

22

20

19

19

18

*16

16

16

14

12

11

10

9.7

9.0

8.3

8.3

7.7

7.7

7.1

6.0

5.0

4.6i

491.4

16.4

975

July

4.6

S.S

5.5

5.5

5.0

4.6

4.2

3.8

3.8

3.8

3.4

*3.0

3.4

3.8

3.8

3.8

3.4

2.6

2.0

1.7

1.5

1.2

1.0

.9

.7

.5

.3

.1

.1

0

0

83.5

2.69

166

Aug.

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max - Win - Mean - Ac-ft -

Water year 1955-56: Max 16,000 Win 0 Mean 235 Ac-ft 170,900

9 1 790 CfS (14*12

* Discharge measurement or

(base. 4.000 cfs).--Pec. 23 (6 a.m.) 30,300 cfs (24.63 ft); Dec. 26 (12:30 p.m.) 

ft); Jan. 25 (10 a.m.) 14,700 cfs (17.00 ft); Pet. 23 (2 a.m.) 6,260 cfs (11.66 ft).

mir'AmAnti nr» rVhHATVfl-M cm nf nn -PI nw mar?A rm f.Vrl a rla-u- _

. f . . . / > . .

ion of no flow made on this day.
190 SALINAS RIVER BASIN

Nacimiento River near San Miguel, Calif.

Location.--Lat 35°47'00", long 120°47 I 24", in SE£ sec. 4, T. 25 S..R. 11 E., on right bank 

4 miles upstream from mouth and 5.5 miles northwest of San Miguel.

Drainage area. 354 sq mi.

Records available. October 1939 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 555.48 ft above mean 

sea level (levels by Corps of Engineers).

Average discharge. 17 years, 274 cfs (198,400 acre-ft per year); median of yearly mean 

discharges, 200 cfs (144,800 acre-ft per year).

Extremes.--Maximum discharge during year, 58,600 cfs Dec. 23 (gage height, 13.15 ft, from 

floodmarks), from rating curve extended above 23,000 cfs on basis of slope-area determination of peak flow; no flow for several months.

1939-56: Maximum -discharge, that of Dec. 23, 1955; no flow for several months in 

each year except possibly 1942-44.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

No storage or large diversion.

Revisions (water years). WSP 1395: 1946-47, 1949-50.

Rating table, water year 1955-56 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Apr. 12-26)

1.0 

1.2 

1.5

155

365

2.0 

3.0 

4.0 

5.0 

6.0 

7.0 

9.0 

11.0

880

2,130

3,520

5,480

3,700

13,OOO

25,000

40,OOO

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

0

O

o

0

0

0

0

0

0

0

0

o"*~ f ^

0

o

o

0

o

0

, aO

(*)

0.1

0.003

0.2

Dec.

, aO

(*)

a300

a3,8OO

a950

al,200

*a55.ooo

alS.OOO

a4,500

alO,OOO

4,460

1,680

1,100

832

2,170

80,992

2,613

160,600

Jan.

1,470

1,560

1,120

856

727

727

618

576

535

475

421

*381

349

317

293

271

250

229

209

203

2O9

197

185

2O3

15 . 500

*8,8OO

7,610

2,790

1,750

1,290

1,040

49,161

1,586

97,510

Feb.

832

683

587

505

455

*413

373

341

309

285

264

250

236

222

209

197

179

173

161

173

236

215

4.540

1,610

1,050

856

*683

566

495

16,904

585

55,550

Mar.

465

421

589

357

325

509

285

278

264

250

236

222

209

197

191

179

173

175

161

145

145

140

155

*130

125

115

110

105

97

93

J39_

6,513

210

12,920

Apr.

86

82

78

74

66

66

63

65

61

58

74

*468

185

130

97

86

74

63

58

56

55

48

48

45

40

314

*725

421

285

229

4,194

140

8,320

May

191

161

140

140

150

135

150

125

155

131

222

179

155

130

125

115

*101

93

89

86

82

74

66

65

65

61

58

56

55

53

.4S

5,611

116

7,160

June

45,

45

45

40

58

58

30

25

23

23

25

23

*16

13

12

n

T?

20

50

52

27

18

16

18

20

14

12

11

11

11

702

25.4

1,390

July

11

8.1

7.2

4.1

3.0

2.4

1.9

1.5

1.5

1.5

1.0

1.5

n.s

1.3

1.3

1.5

1.1

1.1

1.1

1.1

1.0

1.0

.8

.8

.7

.6

.3

o

0

0

59.1

1.97

117

Aug.

(*)

0

O

0

Sept.

(*

0

0

0

Calendar year 1955: Max 35,000 Min 0 Mean 309 Ac-ft 223,600

Water year 1955-56 : Max 35,OOO Min 0 Mean 443 Ac-ft 321,500

Peak discharge (base. 9.600 ofs).--Dec. 25 (about 10 a.m.) 58.600 ofs (13.15 ft); Dec. 26 (6 p.m.) 

16,400 ofs (7.64 ft); Jan. 25 (1 p.m.) 34,200 ofs (10.27 ft); Feb. 25 (8 a.m.) 9,820 ofs (6.28 ft).

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, 2 observations 

of no flow, and records for station near Bryson and San Antonio River at Pleyto.
SALINAS RIVER BASIN 191

San Antonio River at Pleyto, Calif.

Location.--Lat 35°51'55", long 120°59 I 30", in Pleyto Grant, on downstream side of left 

abutment of highway bridge at old townsite of Pleyto, Monterey County, 1.1 miles downstream from Copperhead Creek and 15 miles west'of Bradley.

Drainage area.--282 sq mi.

Records available.--April to September 1922, December 1929 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 720 ft (from topographic map). Prior to 

lay 10, 1939, at datum 1.00 ft higher.

Average discharge.--26 years (1930-56), 85.5 cfs (61,900 acre-ft per year); median of 

yearly mean discharges, 54 cfs (39,100 acre-ft per year).

Extremes.--Maximum discharge during year, 14,500 cfs Dec. 23 (gage height, 5.84 ft), from 

rating curve extended above 8,000 cfs; no flow for several months.

1929-56: Maximum discharge, that of Dec. 23, 1955; no flow for several months each 

year except possibly 1942-43.

Remarks.--Records fair. Small diversions above station for irrigation.

Revisions (water years J.--WSP 1395:

Rating

0.5

.6

.7

.8

.9

1.0

1.2

1.4

1.7

tables,

Oct. 1

0

.2

1.8

6.0

13

21

50

90

160

water

to Jan.

2.

2.

2.

3.

3.

4.

4.

5.

5.

year 

In

25

0

3

6

0

5

0

5

0

2

1938, 1945(M), 1952(M).

1955-56 I 

cubic fe(

250

385

560

820

1,320

2,140

3,450

6,050

7,700

[gage height, In 

st per second)

Jan

0.3

.4

.5

.6

.8

1.0

1.2

Note.

f. aKTS a

feet,

. 26 to

0

.5

2.2

5.6

17

36

64

and discharge,

Sept. 30

1.4

1.7

2.0

2.3

2.6

3.0

107

179

260

380

550

820

 Same as preceding

hnwe * n ff- .

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

0

Dec.

*0&-

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

*0

12

 114

43

6,930

7.490 

 1,460

1,380

1,260 

721

554

418

821

21,203

684

42,060

Jan.

609

767

536

*429

385

396

332

332

304

*279

257

240

213

192

173

155

146

143

136

136

*129

127

120

115

2,17TJ

 1,920

2.420 

1,110

799

638

532

16,240

524

32,210

Feb.

436

365

330

 310

294

278

252

240

221

216

208

189

187

184

179

172

166

159

152

154

213

195

BTB" 660

 380

318

260 

249

224

7,747

267

15,370

Mar.

218

?<56"

192

192

184

176

166

159

156

154

144

140

135

125

121

116

116

114

107

98

96

92

89

85 

83

*83

85 

77

72

64

62

3,901

126

7,740

Apr.

66

66

64

62

58

54

51

50

50

48

56

85

83

77

62

61

61

61

56

54

58

56

50

48 

48

53

 81 

98

IT

77

1,881

62.7

3,730

May

70

SI

59

56

56

53

50

50

58

64

62

58

53

51

48

48

43

 40

38

37

36

33

31

29 

28

27

26 

25

IF

25

25

1,368

44.1

2,710

June

24

55

21

20

19

17

17

15

14

13

12

10

9.8

*9.2

9.2

8.1

7.6

7.6

7.6

7.6

7.6

7.6

7.0

7.0 

7.0

6.6

5.2 

3.8

3.1

2,1

329.4

11.0

653

July

2.8

575

2.0

1.8

1.4

1.2

.9

.8

.5

.3

.2

*.2

.3

.2

.1

.1

0

0

0

0

0

0

0

0 

0

0

0 

0

0

0

0

15.3

0.49

30

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 7,490 Mln 0 Mean 76.7 Ac-ft 55,510

Water year 1955-56: Max 7,490 Mln 0 Mean 144 Ac-ft 104,500

Peak discharge (base. 470 cfs).--Dec. 23 (12 m.) 14,500 cfs (5.84 ft); Dec. 26 

cfs (4.30 ft); Dec. 31 (11 a.m.) 1,110 ofs (3.32 ft); Jan. 25 (5 p.m.) 8,800 ofs 

(about 12 m.) 900 cfs (3.10 ft).

* Discharge measurement or observation of no flow made on this day.

'7 to 9 p.m.) 2,850 

'5.32 ft); Feb. 23
192 SALINAS RIVER BASIN 

Salinas River near Bradley, Calif.

Location. Lat 35°55'40", long 120°52'00", in NE£ sec. 15, T. 23 S., R. 10 E., on left 

bank 6 miles northwest of Bradley and 7 miles dovmstream from San Antonio River.

Drainage area.--2.522 sq mi.

Records available. December 1948 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 450 ft (from topographic map).

Average discharge.--? years (1949-56), 385 cfs (278,700 acre-ft per year).

Extremes.--Maximum discharge during year, 25,000 cfs Dec. 24 (gage height, 12.01 ft); no 

flow for part of Oct. 1.

1948-56: Maximum discharge, 26,800 cfs Jan. 15, 1952 (gage height, 12.35 ft); no 

flow at times during 1951, 1954-55.

Remarks,--Records good above 100 cfs and poor below. Flow partly regulated by Salinas 

Reservoir (see p. 184 ). Several small diversions above station.

Revisions (water years).--WSP 1285: 1950.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0,1

.3

.6

.8

1.1

1.1

1.7

1.9

2.1

2.1

2.2

2.3

.2,1

2.5

2.5

2.5

 2.5

2.5

*2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2.5

63.8

2.06

127

Nov.

2.5

2.5

2.5

2.6

2.6

2.5

2.5

2.5

2.5

2.5

2.5

2.5

l^P.

2.7

4.5

4.9

5.5

4.9

4.9

6.0

6.8

5.3

5.5

6.2

7.0

7.2

7.2

7.2

*7.2

6.8

132.0

4.40

262

Dec.

7.2

7.5

7.5

8.9

8.6

8.0

8.0

8.3

8.6

8.9

8.9

8.6

*8.6

8.6

8.3

6.5

5^8

5.8

5.8

245

1,960

885

11, 300

22.000

*9,170

5,950

8,600

*5,970

2,570

1,950

3,130

71,878.4

2,319

142,600

Jan.

3,120

d2,800

d2,260

*dl,970

1,500

1,410

1,300

1,150

1,150

1,040

960

882

808

746

694

653

590

538

488

466

453

432

406

*399

6,550

*16,200

16.400

7,760

4,540

3,240

2,510

83,415

2,691

165,500

Feb.

2,060

*1,760

1,540

1,390

1,170

1,020

901

798

711

637

605

582

560

524

502

473

432

412

386

568

426

488

5.510

3,200

2,110

1,660

1,400

*1,210

1,050

31,885

1,099

63,240

Mar.

970

882

808

737

694

637

605

597

582

560

538

509

488

459

452

406

586

555

342

356

318

312

501

277

266

250

258

235

*222

217

.212

14,169

457

28,100

Apr.

206

201

191

186

180

170

165

160

155

150

170

*512

582

459

393

374

355

350

306

289

272

255

238

228

212

*217

'§26 867

657

558

9,824

527

19,490

May

455

406

368

542

555

549

550

518

349

586

459

568

518

283

255

238

206

*180

165

165

165

155

145

130

111

106

106

111

115

125

120

7,662

247

15,200

June

111

106

111

111

111

111

111

106

96

87

78

73

64

55

45

45

36

*28

25

21

20

19

18

17

16

12

9.5

7.5

6.1

5^0

1,658.9

55.3

3,290

July

d5

(*)

d4

1"

159

4.5

276

Aug.

(*)

d2

62

2

123

Sept.

(32

60

2

119

Calendar year 1955: Max 22,000 Win o Mean 335 Ao-ft 242,700

Water year 1955-56: Max 22,000 Min o.l Mean 604 Ao-ft 438,300

Peak discharge (base. 4.00O cfs).--Dec. 24 (6 a.m.) 25.000 ofs f!2.01 ft): Dec. 26 (12 D.m.)

14,000 cfs (10.00 ft); Dec. 31 (6 p.m.) 4,590 cfs (7.14 ft); Jan. 27 (3 a.m.) 20,200 ofs (11.22 ft)j

Feb. 23 (3 p.m.) 7,290 cfs (8.23 ft).

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from recorder chart and 3 discharge measurements.
SALINAS RIVER BASIN 193

Arroyo Seco near Soledad, Calif.

Location. Lat 36°16'50", long 121°19'20", in sec. 16, T. 19 S., R. 6 E., on left bank 

Just downstream from bridge, 1.5 miles downstream from Vaquero Creek and 10 miles 

south of Soledad.

Drainage area. 241 sq mi.

Records available .--November 1901 to September 1956.

Gage . Water-stage recorder. Datum of gage is 344.20 ft above mean sea level (Corps of

 Thgineers benchmark). Prior to June 16, 1929, staff gage and June 16, 1929, to 

Dec. 2, 1941, water-stage recorder, at site 1 mile upstream at different datum.

Average discharge . 54 years (1902-56), 167 cfs (120,900 acre-ft per year); median of 

yearly mean discharges, 124 cfs (89,770 acre-ft per year).

Extremes . --Maximum discharge during year, 27,700 cfs Dec. 23 (gage height, 14.30 ft),

 from rating curve extended above 12,000 cfs on basis of slope-area determination of 

peak flow; no flow Oct. 1 to Nov. 14.

1901-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during several 

years .

Remarks . Records good. No storage or large diversion above station.

Revisions (water years ) .

Rating tables,

Oct. 1 to

1.0

1.1

1.2

1.3

1.4

1.6

1.8

2.0

2.2

0

.3

.6

1.0

2.0

5.0

10

18

34

 WSP 881: 1902-9 (yearly summary only).

water year 1955-56 (gage height, In feet, and discharge;

In cubic feet per second) 

(Shifting-control method used Hov. 15-30)

Jan. 25 Jan. 25 to Sept.

2.5 74 1.0 0.3 2.5

3.0 155 1.1 1.0 3.0

4.0 370 1.2 2.4 4.0

5.0 700 1.3 5.2 5.0

6.0 1,200 1.4 10 6.0

7.0 2,220 1.6 29 8.0

8.0 3,980 2.0 71

10. 0 9,600

12.0 17,400

30

134

228

444

840

1,540

4,220

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Hov.

0 

0

0 

0

0

0

0

0

0

0

0

0

0

0

.8

4.0

4.0

4.0

5.2

5.2

5.2

5.2

6.4

6.2

6.4

6.6

6.6

6.4

6.4

*6.4

85.0

2.83

169

Dec.

6.6 

19

13 

11

11

11

24

16

20

22

15

13

11

11

9.7

9.1

8.8

8.5

124

*1,420

308

330

n&soo

6,760

2,120

2,800

1,700

1,060

780

692

1,150

35,983.7

1,161

71,370

Jan.

932 

956

768 

652

620

616

543

599

518

*476

437

395

362

340

322

320

2S5

262

246

250

244

224

236

228

3.490

3,070

*3,000

1,800

1,300

1,020

862

25,373

818

50,330

Feb.

735 

*641

565 

508

461

427

398

372

348

328

310

296

284

272

260

250

240

232

222

296

326

338

1.970

800

597

511

451

418

396

13,252

457

26,280

Mar.

«581 

356

337 

321

308

298

284

272

262

250

242

234

224

214

204

196

190

182

176

170

163

157

152

147

142

136

131

126

121

120

119

6,615

213

13,120

Apr.

124 

*120

115 

110

107

105

100

96

95

96

185

208

150

134

127

120

116

*110

105

100

96

93

88

84

87

203

290

212

174

154

3,904

130

7,740

Hay

*137 

126

117 

136

126

117

112

112

142

133

117

*111

106

100

95

90

85

83

79

79

75

72

69

68

66

64

62

61

60

61

60

2,921

94.2

5,790

June

If

54

51

49

47

46

44

42

41

40

38

37

36

*36

37

35

33

31

31

29

27

26

25

24

27

26

23

21

20

1,092

36.4

2,170

July

19 

20

t

19

17

16

15

14

12

11

*9.6

9.5

10

10

10

10

9.5

9.0

9.0

8.6

8.1

7.6

7.1

6.2

6.2

4.9

4.6

3.8

1,1

3.5

336.7

10.9

668

Aug.

3.5 

3.0

3.0 

3.2

3.5

4.9

5*1

5.2

5.2

4.9

4.4

4.4

3.5

3.2

3.2

3.2

3.0

3.0

3.0

3.0

3.0

3.0

Zi±

2.7

2.4

2.4

2.4

2.4

*2.4

2.4

2.7

104.2

3.36

207

Sept.

3.0 

2.7

2.3

2.1

1.8

1.6

1.4

1.4

1.3

1.0

.9

.9

.9

1.1

1.4

1.7

1.7

1.8

1.8

1.7

1.4

1.3

1.0

1.3

1.6

1.6

1.4

1.4

1.1

1.0

45.6

1.52

90

Calendar year 1955: Max 16,500 Mln o Mean 144 Ac-ft 104,400

Water year 1955-56: Max 16,500 Mln o Mean 245 Ac-ft 177,900

Peak discharge (base. 1.380 cfs). Dec. 20 (10 a.m.) 2,580 cfs (7.24 ft)j Dec. 23 (4:30 a.m.) 

27,700 cfs (14.30 ft); Dec. 26 (2 p.m.) 7,400 cfs (9.30 ft); Dec. 31 (5 a.m.) 1,490 cfs (6.39 ft); 

Jan. 25 (11 a.m.) 11,500 cfs (10.52 ft); Feb. 23 (2:30 a.m.) 4,320 cfs (8.05 ft).

* Discharge measurement or observation of no flow made on this day.
194 SALINAS RIVER BASIN 

Salinas River near Spreokels, Calif.

Location. Lat 36" 37'50", long 121° 40'40", in El Toro Grant, on right bank 80 ft upstream 

from bridge on Sallnas-Monterey highway, 0.5 mile upstream from Toro Creek, 2 miles 

west of Spreokels, Monterey County, and 4 miles south of Salinas.

Drainage area. 4,231 sq mi.

Records available.--January 1900 to August 1901, December 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage is 22.64 ft above mean sea level, adjustment

 of 1912. 1900-1901, May 10 to July 29, 1940, staff gage at same site at different 

datum. Since Mar. 17, 1941, supplementary wire-weight gage on highway bridge 80 ft 

downstream at same datum.

Average discharge. 26 years (1930-56), 483 cfs (349,700 acre-ft per year); median of 

yearly mean discharges, 230 cfs (167,000 acre-ft per year).

Extremes. Maximum discharge during year, 23,600 cfs Dec. 25 (gage height, 24.52 ft); 

minimum not determined.

1929-56: Maximum discharge, 75,000 cfs Feb. 12, 1938 (gage height, 25.0 ft), from 

rating curve extended above 26,000 cfs on basis of velocity-area studies, verified by 

slope-area determination; maximum gage height, 26.85 ft Jan. 16, 1952, from floodmarks; 

no flow at times during 1929-40.

Remarks.--Records fair except those below 10 cfs, which are poor. Small diversions above

 sTaTion for irrigation. Low flow represents waste water from Spreckels sugar refinery 

and sewage.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

el.O

(**)

31.0

1.0

61

Nov.

 el.5|

------

45.0

1.5

89

Dec.

. e2.0

415

12,200

19.000

*7,550

*6,340

7,630

4,020

2,970 

2,710

52,879.0

2,028

124,700

Jan.

2,600

3,560

2,790

2,690

2,210

1,930

1,680

1,520

1,420

1,240

1,140

980

850

730

690

740

548

467

*410

405

412

385

400

385

643

*8,980

15.400

*13,700

7,250

4,850 

3,720

84,725

2,733

168,000

Feb.

5.06Q

2,630

2,280

2,040

1,820

1,640

1,440

1,280

*1,140

1,020

910

810

720

650

571

515

464

430

402

378

372

395

730

1,850

3,020

2,250

1,810

1,540

1,320

37,487

1,293

74,350

Mar.-

1.140

1,000

885

785

700

610

531

488

439

408

376

356

334

314

299

283

272

259

249

244

*234

219

205

190

177

167

155

145

137

125

no

11,836

382

23,480

Apr.

91

84

77

64

51

46

44

41

38

33

33

27

22

20

17

39

70

*56

34

24

23

16

12

10

7.8

7.0

5.0

4.2

4.2

3^4

1,003.6

33.5

1,990

May

6.1

6Q

53

40

27

24

21

14

9.0

5.8

4.2

2.6

2.2

19

32

*23

21

12

5.8

3.0

2.4

2.6

3.0

2.8

3.0

6.2

6.2

6.2

5.8

5.4

5.0

433.3

14.0

859

June

 e2.0

(**)

60.0

2.0

119

July

 el. 5

(**)

46.5

1.5

92

Aug.

(**)

' el.O

31.0

1.0

61

Sept.

' el.t

30. C

l.C

6C

Calendar year 1955: Max 19,000 Mln - Mean 175 Ac-ft 126,500

Water water year year 1955-56: 1955-56: Max Max 19,000 19,000 Mln Mln - - Mean Mean 543 543 Ao-ft Ao-ft 393,900 393,900

Peak discharge (base. 270 cfs). Dec. 25 f3 a.m.) 23.600 efs (24.52 ft); Dee. 28 (3 a.m.) 10.300 

cfs (20.35 ft); Jan. 2 (9 a.m.) 3,770 cfs (15.54 ft); Jan. 26 (11:30 p.m.) 17,800 cfs (23.00 ft)j 

Feb. 25 (2 a.m.) 3,470 cfs (15.12 ft).

* Discharee measurement made on this day.

** Field estimate made on this day.

e Stage-discharge relation indefinite; discharge estimated on basis of 4 field estimates.
PAJARO RIVER BASIN 195

Pacheco Creek near Dunneville, Calif.

Location. Lat 36°58'51" (revised), long 121°22'47" (revised), In Ausaymas y San Pellpe 

Grant, on pier of private road bridge near right bank, 3.3 miles northeast of Dirnevllle, 

Santa Clara County.

Drainage area. 146 sq ml.

Records available. January 1940 to September 1956.

Gage. Staff gage read twice dally with additional readings during high water. Altitude 

of gage is 240 ft (from topographic map). Prior to Nov. 17, 1950, at datum 2.00 ft 

higher.

Average discharge.--16 years, 35.3 cfs (25,560 acre-ft per year).

Extremes. Maximum discharge during year, 12,600 cfs Dec. 23 (gage height, 18.6 ft, from 

floodmarks), from rating curve extended above 820 cfs on basis of slope-area determination of peak flow; no flow Oct. 1 to Dec. 22.

1940-56: Maximum discharge, that of Dec. 23, 1955; no flow at times.

Remarks.--Records fair. Detentiom reservoir (capacity, 6,150 acre-ft) several miles above 

station stores floodwater for release during low flow. Small diversions above station 

for irrigation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Jan. 31 to Feb. 2, 

Mar. 4 to Apr. 4)

Dec. 23 to Jan. 31 Feb. 1 to Sept. 30

2.0 

2.5 

3.5

100

165

370

5.0

10.0

15.0

890

3,490

7,950

1.9

2.0

2.1

2.2

3.5

5.4

9.5

15

2.3 

2.5 

2.8 

3.6

24

51

105

350

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

29

30 

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*7.750

4,010

584

500

437

224

150

110

855

14,600

471

28,960

Jan.

394 

298

202

149

310

358

229

298

205

184

152

124

115

116

158

310

*202

156

132

233

226

207

454

472

5.710

2,230

1,630

*810

503

350

280

15,197

490

30,140

Feb.

214 

155

119

99

87

81

69

*65

61

56

51

48

45

45

44

43

40

37

36

37

48

45

343

139

99

95

80

69

- . . A4

2,414

83.2

4,790

Mar.

57

53

51

47

44

44

41

38

40

37

36

33

32

30

16

12

23

24

24

*25

23

22

21

20

18

18

16

14

13

13

949

30.6

1,880

Apr.

tt

9.5

9.5

9.1

7.9

7.9

7.4

6.2

6.2

7.4

7.0

9.5

11

9.1

7.9

*5.4

5.0

4.8

4.6

4.3

4.3

4.3

3^9

3.9

4.1

4.3

4.3

199.0

6.63

395

May

4.3 

3.9

4.1

5.0

6.2

6.2

6.6

7.0

6.6

6.2

5.4

5.4

5.4

5.4

*5.4

5.4

5.4

5.4

6.2

7.0

7.9

7.9

7.0

6.2

5.4

5.0

6.2

6.6

7.4

8.7

189.5

6.11

376

June

10 

11

12

12

12

12

11

9.1 iir~ 8.7

11111112

13

11

11

*12

12

13

13

13

13

13

12

12

12

11

11

348.8

11.6

692

July

9.5 

8.7

8.7

9.5

9.5

11

11

9.5

9.5

9.5

8.7

7.4

6.2

5.4

5.0

4.6

*4.6

5.0

5.0

5.0

5.4

5.4

5.4

5.4

5.4

5.2

5.2

5.2

5.2

5.2

5.2

211 '.5

6.82

420

Aug.

5.2

5.3

5.8

5.8

5.4

5.4

5.4

*5.4

5.4

5.4

5.4

5.4

5.4

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.0

5.0

5.0

5.0

5.0

5.0

5.0

164.0

5.29

325

Sept.

5*2.

4.6

4.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.3

.3

.3

.3

4.3

4.3

4.3

4.3

4.3

4.3

1*1

4.1

4.1

4.1

4.1

4.1

4.1

129.8

4.33

257

Calendar year 1955: Max 7,730 Min o Mean 44.1 Ac-ft 31,890

Water year 1955-56: Max 7,730 Min o Mean 94.0 Ac-ft 68,240

Discharge measurement made on this day.
196 PAJARO RIVER BASIN

Llagas Creek near Morgan Hill, Calif.

Location. Lat 37°06'50", long 121°41>25", in Las Uvas Grant, on right bank 500 ft up- 

 stream from Llagas Avenue Bridge, 0.3 mile upstream from small tributary, and 2.3 miles 

west of Morgan Hill, Santa Clara County.

Drainage area . 19.6 sq mi.

Records available. October 1951 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 445 ft (from topographic map).

Average discharge. 5 years, 16.6 cfs (12,020 acre-ft per year).

Extremes. Maximum discharge during year, 334 cfs Dec. 23 (gage height, 3.39 ft); no flow 

Oct. 18 to Dec. 17.

1951-56: Maximum discharge, 2,760 cfs Jan. 12, 1952 (gage height, 8.18 ft), from 

rating curve extended above 1,100 cfs by logarithmic plotting; no flow during part of 

each year.

Remarks.--Records good. Flow regulated by Llagas Reservoir (capacity, 7,500 acre-ft) 

beginning in 1955.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 18-22)

Oct. 1 to Dec. 17

0.9 O

1.0 .8

1.1 2.0

1.2

1.3

1.4

3.8

6.4

10

0.82 

.9

1.0

1.1

1.2

1.3

Dec. 18 to Sept. 30 

0

.4 

1.6 

4.2 

8.5

14

1.6 

2.0 

2.5 

3.0

3.5

40

83

150

244

362

Discharge, in cubic feet per second, water year October 1955 to September 1S56

Day

1 

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

 fci

1.6

1.1

.5

.1

.9

.7

.9

.8

1.2

2.3

1.3

1.8

.5

.2

.7

o

O

0

0

0

0

0

0

*0

0

0

0

0 

0

25.3

0.82

50

Nov.

(*)

0

0

0

Dec.

0 

O

0

0

0

0

0

o

0

0

0

0 

0

0

0

0

0

.1

3.3

*29

62

75

262

*324

324

324

324

267

198

137 

137

2,466.4

79.6

4,890

Jan.

137 

137

137

156

237

251

*213

154

90

50

*30

tf22

26

*26

26

26

26

40

48

48

48

48

78

135

134

134

133

131 

93

2,846

91.8

5,640

Feb.

*51 

34

26

26

26

26

26

26

26

26

26

26 

26

26

26

26

26

26

26

29

32

34

46

52

52

52

63

75

61

1,023

35.3

2,030

Mar.

38 

*26

28

28

29

29

29

29

29

29

29

26 

13

4.6

176

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6 

4.6

444.8

14.3

882

Apr.

4.6 

*4.6

4.6

4.6

4.6

4.6

4.6

4.6

15

23

26

26 

26

20

18

17

13

13

13

13

13

13

16

18

18

13

8.0

14

18

18

408.8

13.6

811

May

19 

19

23

*10

11

19

12

8.0

8.0

8.0

8.0

13 

18

18

22

25

25

25

27

29

29

31

33

33

33

33

32

32

32

32

32

699.0

22.5

1,390

June

i34

33

33

38

*40

40

40

40

40

40 

40

40

40

40

39

39

39

39

39

38

38

38

38

38

38

38

38

39

1,140

38.0

2,260

July

39

39

*39

38

35

32

32

32

32

32

32

32 

32

31

31

28

26

26

24

22

19

18

16

14

13

10

8.0

8.5

8.0

7.0

6.2

761.7

24.6

1,510

Aug.

6.2 

6.2

*6.2

6.2

5.8

5.8

5.8

5.8

5.8

5.4

5.4

5.8 

5.4

5.4

5.4

5.4

5.4

5.4

5.0

5.4

5.8

1*1

9.1

9.1

7.5

5.4

5.0

5.0

4.6

1*1 4. 2

182.2

5.88

361

Sept.

4.2 

3.9

il

3.9

3.9

3.9

3.9

4.2

4.2

4.2

4.2

4.6 

4.6

5.0

5.0

5.0

*4.6

4.2

5.8

8.0

8.0

7.5

7.0

7.0

17

"24 24

23

24

24

256.4

8.55

509

Calendar year 1955 : Max 324 Min 0 Mean 11.2 Ac-ft 8,110

Water year 1955-56 : Max 324 Min 0 Mean 28.0 Ac-ft 20,330

Discharge measurement or observation of no flow made on this day.
PAJARO RIVER BASIN 197

Uvas Creek near Morgan Hill, Calif.

Location. Lat 37°04'00", long 121°41'30", in Las Uvas Grant, on right bank 500 ft upstream 

from Uvas Dam, 0.6 mile downstream from Eastman Canyon, and 4.8 miles southwest of 

Morgan Hill, Santa Clara County.

Drainage area. 30.2 sq mi.

Records available. December 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map).

Average discharge. 25 years (1931-56), 36.1 cfs (26,140 acre-ft per year); median of 

yearly mean discharges, 28.0.cfs (20,300 acre-ft per year).

Extremes.- -Maximum discharge during year, 10,300 cfs Dec. 23 (gage height, 14.3 ft, from 

floodmarks), from rating curve extended above 4,600 cfs on basis of slope-area determination of peak flow; no flow Sept. 8-30.

1930-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during 1931-34, 

1943-46, 1956.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

No storage or large diversion above station. Records of chemical analyses for the water 

year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Shifting-control method used Dec. 28 to Jan. 25, Jan. 31 to 

Feb. 13, June 26 to July 6)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

2.1

2.2

2.3

2.4

2.5

2.6 

2.8 

3.0

1.2 

2.6

3.3 

3.6 

4.0 

5.0 

6.0 

7.0 

9.0 

11.0

90

150

244

554

926

1,390

2,830

5,020

3.2

.2

.7

1.4

2.2

3.1

5.3

10

26

3.5 

4.0 

5.0 

6.0 

7.0 

8.0 

9.0 

10.0

68

164

460

850

1,330

1,950

2,790

3,830

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.2

'.Z

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

..3

*.3

.4

.4

.4

.4

.4

8.8

0.28

17

Nov.

0.4

.4 

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.6

.6

.9

.9

1.1

1.5

1.4

1.5

2.2

*27T

1.5

1.5

1.3

.1

.1

.1

.1

.1

27.1

0.90

54

Dec.

2.7

3.8

2.1

.5

.4

.6

.8

.8

.6

.5

.4

.5

.6

.6

.5

.5

.5

.2

929

*461

145

1,810

"35,000

a3,000

a500

al,000

550

336

241

270

411

14,674.6

473

29,110

Jan.

376

288 

212

*157

288

253

246

222

176

162

a!40

114

96

118

164

*164

136

126

114

124

111

107

114

109

957

740

554

450

285

222

178

7,443

240

14,760

Feb.

*146

126

114

103

94

85

78

71

65

62

58

55

51

49

*45

42

41

39

58

148

99

657

513

217

171

146

122

109

101

5,645

126

7,250

Mar.

90

*85 

78

71

66

62

55

54

49

48

45

42

41

38

36

54

32

31

50

28

27

26

26

25

25

24

25

23

23

2222"

1,279

41.3

2,540

Apr.

23

*20 

20

19

18

17

17

17

16

17

94

BT

53

28

26

25

22

18

17

15

15

12

12

12

12

28

30

21

17

17

685

22.8

1,360

May

14

13 

15

*34

24

23

22

20

23

23

21

20

17

17

15

14

14

15

14

14

13

12

11

12

12

*11

10

10

9.8

9.2

8,6

490.6

15.8

970

June

9.8

7!o

7.5

6.1

7.0

7.0

6.5

5.7

7.0

5.7

6.1

5.7

5.7

6.1

5.0

5.7

5.5

4.6

4.5

5.8

3.6

3.6

5.4

3.6

3.6

3.3

5.2

3.1

37T

160.7

5.36

320

July

3.4

37? 

*3.2

5.2

5.1

2.9

2.7

2.7

2.8

2.7

2.6

2.4

2.4

2.5

2.2

2.2

2.1

2.0

1.9

1.8

1.9

1.6

1.7

1.7

1.5

1.5

1.5

1.4

T74

1.5

1.4

68.9

2.22

140

Aug.

1.5

1.2 *iii

1.1

1.1 1.1 1.1 1.1

1.0

1.0

1.0

1.0

1.1

1.0

1.1 1.1 1.1

.9

.9

.8

.7

.7

.6

.6

.6

.5

.4

f a -*

27.5

0.89

54

Sept.

1

V aO.5

.2

.2

.2

.1

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.6

0.05

5.2

Calendar year 1955: Max 5,000 Mln 0.2 Mean 50.2 Ac-ft 36,530

Water year 1955-56: Max 5,000 Mln 0 Mean 77.9 Ac-ft 56,560

Peak discharge (base, 740 cfs). Dec. 19 (5 p.m.) 2,540 cfs (8.67 ft); Dec. 25 (time unknown) 

10,500 cfs (1475 ft); Jan. 25 (6 a.m.) 2,500 cfs (8.45 ft); Feb. 22 (7:30 p.m.) 5,720 cfs (9.90 ft).

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge Interpolated or estimated on basis of 1 discharge measurement 

and records for San Franclsqulto Creek at Stanford University.

493801 O - 59 - 14
198 PAJARO RIVER BASIN

San Benito River near Willow Creek School, Calif.

Location. Lat 36°36'50", long 121°12'50", in SW£ sec. 21, T. 15 S., R. 7 E., on right 

bank 1.7 miles downstream from Willow Creek, 1.8 miles northwest of Willow Creek School, 

and 10.4 miles northwest at San Benito. Prior to Nov. 11, 1955, at site 0.9 mile upstream.

Drainage area. 250 sq mi. Prior to Nov. 11, 1955, 249 sq mi (revised). 

Records available. December 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 878.57 ft above mean sea level, datum of 

1929, supplementary adjustment of 1943. Prior to Jan. 28, 1948, at same site at 

different datum. Jan. 28, 1948, to Nov. 10, 1955, at site 0.9 mile upstream at different datum.

Average discharge. 16 years (1940-56), 23.4 cfs (16,940 acre-ft per year); median of 

yearly mean discharges, 12 cfs (8,300 acre-ft per year).

Extremes . Maximum discharge during year, 3,790 cfs Dec. 24 (gage height, 5.2 ft), from 

rating curve extended above 2,900 cfs on basis of slope-area determination of peak flow; 

no flow June 29, 30, July 24.

1939-56: Maximum discharge, 6,200 cfs Apr. 4, 1941 (gage height, 7.8 ft, datum then 

in use), from rating curve extended above 1,600 cfs; no flow Sept. 19 to Oct. 24, 1947, 

June 29, 30, July 24, 1956.

Maximum stage known, about 9.0 ft, from floodmarks left by high water of 1937-38.

Remarks. Records fair. Small diversions above station for irrigation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Nov. 11 to Dec. 23, Aug. 30 to Sept. 3o)

Oct. 1 to Nov. lo 

4.2 0

4.3

4.4

Nov. 11 to Jan. 25 

0

Jan. 26 to Sept. 3O

.5

1.5

3.0

5.0

10

24

54

1.6 

2,0 

2.5 

3.0 

3.5 

4.0 

5.2

116

215

430

750

1,200

1,780

3,790

.9 

1.0 

1.2 

1.4

2.3 

7.2

1.6 

2.0 

2.5 

3.0 

3.2

76

181

380

700

880

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0.1

(»*)

3.1

0.1

6.1

Nov.

' 0.3

(*)

.4

.4

if

.3

.2

.3

.2

.2

.2

.2

.2

.2 

.2

.2

.2

.2

.2

.2

.2

S.5

0.28

17

Dec.

0.5

^1

.2

.3

*.2

.4

.2

.5

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

15

1,420

*2,470

447

290

»303

*120

72

94 

368

5,604.3

181

11,120

Jan.

154

136

102

72

87

143

87

72

62

53

48

41

36

35

37

*42

35

31

28

38

43

39

74 

102

768

448

842

332

264

184 

139

4,574

148

9,070

Feb.

107

84

74

70

66

63

*59

56

52

47

45

42

33

35

32

30

29

30

27

25.

25

26

57

88

54

50

43

37

34

1,425

49.1

2,830

Mar.

31

31

28

26

26

25

24

23

22

20

19

18

17

17

15

14

14

14

14

*14

13

11

10

10

8.6

7.9

7.2

7.2

6.5

6.5 

5.9

505.8

16.3

1,000

Apr.

6.5

7.9

7.9

6.5

5.3

4.7

3.7

3.3

3.3

3.3

4.7

17

26

20

19

16

*14

12

8.6

3.7

2^6

2.9

6.5 

4.7

3.7

7.2

13

13

12

11

270.0

9.00

536

May

7.9

5.3

4.2

5.9

5.9

5.9

6.5

7.2

12

11

29

20

16

13

*9.3

7.2

5.3

4.7

3.7

3.3

2.9

2.3

2.1 

1.1 rs

1.5

1.5

1.5

1.5

1.5 

1.5

232.2

7.49

461

June

1.5

1.5

1.3

1.5

1.5

1.6

i±8

1.6

1.6

1.5

1.5

1.3

1.0

1.3

1.8

1.8

1.8

1.8

*1.8

1.8

1.8

1.6

1.6 

1.6

1.6

1.5

.8

.2

0

0

42.0

1.40

83

July

0.1

.5

1.0

1.0

.6

.7

.4

.2

.2

.1

.1

.1

.1

.2

.7

.7

*.5

.7

.4

.3

.2

.1

.1 

~.l 0

.2

.4

.6

>6

.6

.7

12.2

0.39

24

Aug.

1.1

1.0

.7

.6

.5

.5

.2

*.l^

.1

.1

.1

.1

.2

.1

.4

.6

.8

1.0

1.0

1.1

1.1

1.0 

.7

.7

.8

1.0

1.1

1.3

1.5 

il

21.4

0.69

42

Sept.

1^

1.6

1.5

1.3

1.1

1.1

1.1

1.1

1.1

1.3

1.5

1.6

1.6

1.8

1.8

1.6

1.6

1.5

1.5

1.6

1.6

1.6

1.6 

1.6

1.5

1.5

1.5

1.5

1.6

1.6

44.7

1.49

89

Calendar year 1955: Max 2,470 Min - Mean 19.5 Ac-ft 14,o90

Water year 1955-56: Max 2,47O Min 0 Kean 34.8 Ac-ft 25,28O

Peak discharge (base. 150 cfs). Dec. 24 (about 2 a.m.) 3,790 cfs (5.2 ft); Dec. 26 J9-.3O p.m.)

.m.) 1

reax: giscnarge lease, ibucrsj. uec. 24 laoout z a.m.; 3,790 c 

666 cfs (2.88 ft); Dec. 31 (12 m.) 59O cfs (2.77 ft); Jan. 6 (8 a 

(6 p.m.) 1,770 cfs (3.99 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

. . . .. 

191 cfs (1.92 ft); Jan. 25
PAJARO RIVER BASIN 199

Tres Pinos Creek near Tres Pinos, Calif.

Location. Lat 36 0 45'13", long 121°17'03", in Santa Ana y Quien Sabe Grant, on right bank 

3.5 miles southeast of Tres Pinos, San Benito County, and 6.2 miles upstream from mouth.

Drainage area. 209 sq ml.

Records available. December 1940 to September 1956.

Gage. Water-stage recorder. Concrete control since June 3, 1954. Altitude of gage is 

570 ft (from topographic map).

Average discharge. 15 years (1941-56), 10.7 cfs (7.750 acre-ft per year); median of yearly 

mean discharges, 5.1 cfs (3,700 acre-ft per year).

Extremes. Maximum discharge during year, 4,750 cfs Dec. 23 (gage height, 6.90 ft), from 

rating curve extended above 2,000 cfs on basis of slope-area determination of peak flow; 

minimum daily, 0.3 cfs Oct. 1-8.

1940-56: Maximum discharge, 8,060 cfs Apr. 4, 1941 (gage height, 7.75 ft), from 

rating curve extended above 3,500 cfs; no flow Aug. 30, 31, 1952.

Flood in February 1938 reached a stage of about 9.0 ft, from floodmarks.

Remarks.--Records fair. Diversions above station for irrigation can divert total flow 

in summer months.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.3

.3

.3

.3

.3

.3

.3 

.3

.8

.8

1.1

TTo

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.1 1.1 1.1

.7

».4

.4

.4

.5

.5

.5

.5

21.3

0.69

42

NOV.

0.5

.6

.5

.5

.5

.6

.6 

.6

.6

.6

.6

.6

.7

.7

.6

1.0

1.6

1.6

1.6

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

2^

2^0

35.0

1.17

69

Dec.

2.3

2.0

2.0

2.0

*li8

1.8

1.8 

2.0

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

2.3

*2,090

»2.590

392

146

 192

39

35

53

978

6,356.4

205

12,610

Jan.

209

126

73

46

195

104

58 

76

54

39

39

25

18

15

141

 384

111

70

51

84

108

96

749

147

1.440

1,080

1,140

588

170

114

105

7,655

247

15,180

Feb.

81

73

58

54

46

37

*29 

23

16

15

13

11

10

9.4

7.9

6.5

5.9

7.2

6.5

5^5

5.3

5.3

31

31

21

23

18

15

13

- - - -

677.3

23.4

1,340

Mar.

11

10

10

9.4

8.6

8.6

8.6 

7.9

7.9

7.9

7.9

7.2

7.2

7.2

7.2

6.5

5.9

5.9

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

213.8

6.90

424

Apr.

4.7

4.7

4.2

3.7

3.7

3.3

ftf

2.9

2.9

2.9

2.9

2.9

2.9

4.2

4.2

3.7

3.3

2.9

3.3

3.3

2.9

2.9

3.3

2.9

2.9

3.3

2.9

- -----

105.3

3.51

209

May

3.3

3.3

3.3

3.7

3.7

4.2

4.2 

.5.3

5.3

5.3

5.3

4.7

5.3

5.3

*4.7

4.7

4.7

4.2

2.9

2.9

3.3

3.3

3.7

3.7

2.9

3.3

3.3

1.8

1.8

1.4

TTe

116.4

3.75

231

June

0.7

1.0

1.1

1.0

1.0

1.2

1.8

1.8

1.8

2.0

2.3

2.6

2.6

2.6

2.9

2.6

2.9

2.9

 2.9

2.9

2.9

3.3

3.3

3.7

JLJL

4.7

4.7

4.2

3.7

4.2

------

80.6

2.69

160

July

4.2

4.7

4.7

5.3

5.3

5.3

ftf

5.9

5.3

5.3

2.6

2.3

2.3

2.0

1.8

 1.8

1.8

1.8

1.8

1.6

1.6

1.8

1.4

2.0

2.9

2.9

3.3

3.7

3.7

3.7

104.6

3.37

207

Aug.

2.9

2.0

1.8

1.8

l.S

2.0

2.0

2.0

 2.6

1^3.

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

2.9

2.9

2.9

2.9

2.9

2.9

2.3

1 . 2

1.2

1.4

82.0

2.65

163

Sept.

1.4

1 * 4

2.3

3^3

3.3

3.3

3.3 

2.3

2.0

2.6

2.0

1.4

1.4

1.4

2.6

1.8

1.6

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.3

2.3

2.3

2.3

2.6

-----

65.2

2.17

129

Calendar year 1955 : Max 2,390 Mln 0.2 Mean 19.3 Ac-ft 13,990

Water year 1955-56 : Max 2,390 Mln 0.3 Mean 42.4 Ac-ft 30,760

(4.83 ft)j Jan. 5 (8 p.m.) 522 efa (3.37 ft); Jan. 15 (12 p.m.) 1,070 efs (3.89 ft); Jan. 23 (2 a.m.) 

1,080-efs (4.10 ft); Jan. 26 (9 p.m.) 2,270 efs (5.23 ft). 

* Discharge measurement made on this day.
200 PAJARO RIVER BASIN

San Benito River near Hollister, Calif.

Location Lat 36°47'17" (revised), long 121 "22'11" (revised), in SWi sec. 24, T. 13 S., 

R. 5 E., on left bank 1,500 ft downstream from Bird Creek, 0.9 mile downstream from Tres 

Pinos Creek, 2.7 miles west of Tres Pinos, and 4.8 miles southeast of Hollister.

Drainage area.--586 sq mi.

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 370 ft (from topographic map).

Average discharge. 7 years, 29.4 cfs (21,280 acre-ft per year).

Extremes. Maximum discharge during year, 7,460 cfs Dec. 24 (gage height, 12.55 ft); no 

flow for several months.

1949-56: Maximum discharge, that of Dec. 24, 1955; no flow during several months 

each year.

Remarks. Records good except those for periods of no gage-height record, which are poor. 

Several small diversions above station for irrigation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method, used Feb. 9-24)

1.95

2.0

2.1

2.2

2.3

2.5

Oct. 1 to Jan.. 27

3.4

4.0

5.0

6.0

7.0

8.0

10.0

12.0

Jan. 27 to Sept. 30

.4

2.6

5.7

10

23

38

72

151

320

660

1,150

1,840

2,680

4,640

6,810

1.9

2.0

2.1

2.2

2.3

2.4

1.3 

2.3 

3.9 

6.4

2.6 

2.9 

3.2 

3.5 

4.0 

5.0 

6.0

11

31

66

120

265

655

1,150

Note. Same as preceding 

table above 6.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

0

Dec.

0"0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.4

2,870

5,980

Ttl96"

600

550 

*250

100

300

1,110

12,950.4

418

25,690

Jan.

600

300

150

120

180

350

180

120

100

70

60

50

45

4090-

350

*180

100

55

102

135

110

513

380

2,230

1,880

2,540 

1,130

754

400

300

13,614

439

27,000

Feb.

250

2150"

180

150

130

110

*90

80

71

62

63

59

68

45

34

28

21

34

24

18

15

23

49

127

108

93

74 

47

30

2,283

78.7

4,530

Mar.

22

25

16

12

12

11

9^1

9.6

21

21

21

21

20

19

18

18

18

18

26

*28

27

25

37

55

32

31

30 

30

30

29

31

702,8

22.7

1,390

Apr.

33

33

32

31

33

34

33

34

34

36

38

39

38

38

39

38

*37

29

5.6

3.9

3.2

3.0

3.0

2.9

2.9

2.3 379" 

3.9

3.4

3.4

670.4

22.3

1,330

May

3.2

2.7

3.0

3.6

4.8

4.6

4.6

5.1

7.8

12

36

21

18

13

*6.9

4.8

3.8

2.3

574

3.6

3.8

2.9

6.5

21

19

19

21 

25

21

22

17

348.4

11.2

691

June

22

29" 29

24

19

13

8.7

6.4

5.3

4.4

3.4

2.1

1.3

1.2

1.1

1.0

.7

.6

*.4

74

.4

.4

.4

.5

.4

.4

.4 

.4

.4

.4

177.1

5.90

351

July

%!.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

*.4

.3

73

.3

.3

.3

.3

.3

.3

.3

.3 

.3

.3

.3

.3

11.0

0.35

22

Aug.

0.2

.2

.2

.2

.2

.2

.2

.2

*.l

.1

.1

.2

.2

.2

.2

.2

.2

.5

7T

.1

.1

.1

.1

0

0

.1

0

.1

0

0

0

4.3

0.14

8.5

Sept.

C

0

0

Calendar year 1955: Max 5,980 Min 0 Mean 37.3 Ac-ft 26,990

Water year 1955-56: Max 5,980 Mln 0 Mean 84.0 Ac-ft 61,010

Peak discharge (base, 

(7.39 ft); Jan. 23

. a.m.) 7,460 cfs (12.55 ft)j Dec. 31 (5 

; Jan. 27 (8 a.m.) 3,720 cfs (9.08 ft).

31 (5 a.m.) 2,150 cfs

;ed on
PAJARO RIVER BASIN 201

Pajaro River at Chittenden, Calif.

Location. Lat 36°54'01", long 121°35'48", in Salsipuedes Grant, on downstream side of 

right bank pier of State highway bridge, 0.6 mile downstream from Pescadero Creek, 

0.6 mile southeast of Chittenden, Santa Cruz County, and 2.3 miles downstream from 

San Benito River.

Drainage area. 1,188 sq mi.

Records available. December 1939 to September 1956. Prior to October 1954, published as 

"near Chittenden."

Gage. Water-stage recorder. Datum of gage is 81.81 ft above mean sea level (levels by 

0. S. Weather Bureau). Prior to May 13, 1949, wire-weight gage on former bridge 100 ft 

downstream at same datum except that water-stage recorder, also 100 ft downstream and 

at same datum, was used Dec. 20, 1946, to June 11, 1947, June 21 to Sept. 23, 1947, and 

Dec. 19, 1947, to May 6, 1948.

Average discharge.--16 years (1940-56), 159 cfs (115,100 acre-ft per year); median of 

yearly mean discharges, 115 cfs (83,300 acre-ft per year).

Extremes. Maximum discharge during year, 24,000 cfs Dec. 24 (gage height, 32.46 ft), from 

rating curve extended above 8,300 cfs on basis of. slope-conveyance study; minimum not 

determined.

1939-56: Maximum discharge, that of Dec. 24, 1955; no flow at times during July and 

August 1948.

Flood in February 1938 reached a stage of 31.3 ft, from floodmarks.

Remarks. Records fair. Small amount of storage and many diversions above station for

irrigation. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used July 9 to Sept. 30)

3.0

3.1

3.2

3.3 

3.5 

3.7 

4.0 

4.5 

5.0

5.5

7.0

10.0

13.0

16.0

19.0

23.0

27.0

32.0

125

350

920

1,620

2,580

4,180

7,670

12,400

22,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

. aO.9

.8

.8

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9 1".9

> a.8

t

 *

27.4

0.88

54

Nov.

, aO.8

. al.2

. al.O

30.2

1.01

60

Dec.

al.O

(*)

1.7

1.5

2.1

2.8

2.3

2.1

2.0

1.9

1.9

1.9

1.9

1.9

2.0

4.1

773

331

1,210

11,500 

21.700 

12,100

4,220

*2,960

*1,900

1,310

1,010

2,640

61,689.1

1,990

122,400

Jan.

2,110

1,670 

1,210

902

1,210

1,600

1,150

1,040

834

682

596

506

437

4T5

865

1,440

885

*678

569

625

764

669

1,370 

1,240 

4,880

7,350

8.410

*5,900

3,180

1,920

1,370

56,510

1,823

112, 100

Feb.

1,030

790 

664

585

520

457

398

*352

297

276

257

233

210

192

178

*158

144

137

124

13?

200

176

1.220 

627 

471

443

378

334

324

_ _ _ _ _ _

11,307

390

22,430

Mar.

284

243 

213

194

177

164

150

139

133

124

117

109

101

93

82

73

68

64

60

56

*52

48

44 

42 

42

42

39

38

38

36

36

3,101

100

6,150

Apr.

35

31 

28

26

24

24

24

24

23

24

32

100 "67

48

39

38

28

*26

26

23

21

20

1919" 

21

26

30

30

26

22

924

30.8

1,830

May

20

18 

18

20

22

24

23

21

22

23

21

18

18

18

16

*17

18

18

20

20

18

18

18 

18 

16

16

16

15

14

1212"

568

18.3

1,130

June

12

12 

12

12

12

12

T4~ 14

12

10

9.4

9.0

8.0

7.6

7.6

7.6

7.6

7.6

*7.0

6.1

5.3

4.4

3.9 

3.9 

3.3

2.5

1.8

1.6

1.3

2,2

229.7

7.66

456

July

3.2

4TT

5.1

5.6

5.8

5.3

4.4

3.9

4.0

3.5

3.2

3.4

4.0

4.3

3.9

3.9

*4.0

4.5

5.1

5.1

5.5

5.6

5.9 

6.1 

6.5

5.5

5.0

5.1

5.6

6.9

7.0

151.0

4.87

300

Aug.

7.0

S7T 

5.6

5.8

5.8

4.8

4.1

3.7 *3~T8~

4.0

4.1

4.3

4.7

4.4

4.3

4.3

4.1

4.3

4.5

4.7

4.7

4.5

4.1

4.1 

4.7

4.8

4.7

4.8

4.7

4.3

144.2

4.65

286

Sept.

3.7

Ho* o

3.4

3.1

2.9

3.0

3.0

3.3

3.4

3.2

3.0

3.0

2.9

2.9

2.8

2.5

2.4

2.3

2.1

2.1

2.1

2.1 

2.2 

2.3

2.3

2.5

2.6

2.5

2.6

84.1

2.80

167

Calendar year 1955 : Max 21,700 Mln 0.4 Mean 182 Ac-ft 131,900

Water later year year 1955-56 1955-56; : Max Max 21,700 21,700 Mln Hln - - Mean Mean 368 368 Ao-ft Ao-ft 267,400 267,400 ___

Peak discharge (base. 400 cfs).--Dec. 20 (9:30 a.m.) 1,180 cfs (11.18 ft); Dec. 24 (9 a.m.) 24,000 

fs (32.46 ft); Dec. 31 (1:30 p.m.) 3,380 cfs (17.74 ft); Jan. 6 (3 a.m.) 1,850 cfs (13.90 ft); 

Jan. 16 (7:30 a.m.) 1,710 cfs (13.36 ft). Jan. 27 (l2:30 p.m.) 8,830 cfs (24.12 ft); Feb. 23 (6 a.m.) 

1,700 cfs (13.31 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

nearby stations.
202 SOQUEL CREEK BASIN

Soquel Creek at Sequel, Calif.

Location. Lat 36°59'29", long 121°57'17" , in NE£ sec. 10, T. 11 S., R. 1 W. , on left bank 

0.2 mile upstream from highway bridge in town of Soquel and 0.4 mile downstream from 

Bates Creek.

Drainage area. 40.4 sq mi.

Records available. May 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 40 ft (from topographic map).

Average discharge. 5 years, 55.2 ofs (39,960 acre-ft per year).

Extremes. Maximum discharge during year, 15,800 cfs Dec. 23 (gage height, 22.33 ft), from 

rating curve extended above 2,100 cfs on basis of slope-area determination of peak flow; 

minimum, 0.3 cfs Oct. 9.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, that of Oct. 9, 1955.

Remarks. Records fair. Small diversion above station for irrigation. Records of chemical 

analyses for the water year 1956 are given in WSP 1453,

Discharge, in cubic feet per second, water* year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

3.0

2.4

2.6

2.4

2.2

1.9

2.0

1.9

1.4 T7i

2.3

2.2

2.0 

2.1

2.4

2.6

2.8

3.2

3.2

3.2

3 3

373

3.2

3.0

 2.4

2.6

2.4

2.3

2.4 

2*6

2.6

77.8

2.51

154

Nov.

2.8

2.8

2.6

2.8

3.0

3.5

3.2

2.6

2.6

I**

2.6

2.S

H.O

5.3

4.5

6.8

5.9

4.8

4.5

6.5

6.2

5.0

5.9

5.0

4.8

4.5

4.5

4.5 

*4.8

136.2

4.54

270

Dec.

8.9

10

8.0

6.5

7.4

34

15

13

21

11

8.6

7.7

7.1 

6.5

6.5

6.2

¥75

7.7

700

 447

234

4,050

 8.800

17155

405

1,710

 483

*261

200

184

308

19,373.6

625

38,430

Jan.

408

354

258

234

351

 230

209

202

165

158

141

144

153 

177

 650

 416

265

231

203

227

 169

176

201

161

776

3640

3500

a360

3290 

a240

3200

8,889

287

17,630

Feb.

also

 130

121

110

99

91

81

75

68

64

61

58

55 

53

51

 49

47

47

67

273

334

T33

124

117

99

91

88

2,847

98.2

5,650

Mar.

80,

TS

 71

68

65

63

60

59

57

56

54

52

51 

50

49

47

46

44

44

43

42

42

41

40

39

38

38

36

36 

36

36

1,558

50.3

3,090

Apr.

35

35

34

34

33

32

31

30

30

33

22

43

32 

31

29

29

28

27

 26

25

24

?S

24

24

27

56

62

49

45 

42

1,053

35.1

2,090

May

41

40

50

~~78" 101

76

74

67

69

64

55

48

43 

38

35

32

29

28

27

26

24

23

22

*19

19

19

1Z

19

19 

20

18

1,240

40.0

2,460

June

19

19

19

17

17

17

16

15

 14

13

15

12

11 

11

10

10

10

9.8

10

9.0

io"*~ 8.4

9.8

9.8

10

10

10

9.8

9.8 

10

371.4

12.4

739

July

To" 10

10

10

9.0

8.7

8.7

8.7

9.0

8.7

8.0

8.0

8.0 

6.8

7.4

7.4

7.1

7.4

7.4

7.1

7.1

7.4

7.4

7.1

7.1

7.7

6.8

6.5

6.5 

5.9

5.3

242.2

7.81

480

Aug.

4.6

4 a g

4.5

4.6

5.3

6.2

6.6

 5.7

5.3

4.2

5.3

6.5

H6.3

6.2

6.2

6.5

6.5

5.9

5.6

5.3

5.3

4.8

4.2

4.5

4.5

5.3

5.3 

5.3

4.8

169.0

5.45

335

Sept.

4.5

4.5

4.5

4.2

4.2

4.2

4.2

4.2

4.0

4.2

4.5

4.5

4.2 

4.2

4.2

4.2

4.2

4.2

5.4

 5^6

4.8

4.8

4.2

4.2

4.0

3.8

3.8

3.8

3.5

3^0

127.8

4.26

253

Calendar year 1955: Max 8,800 Min 1.2 Mean 68.5 Ao-ft 49,590

Water year 1955-56: Max 8,800 Min 1.4 Mean 98.6 Ao-ft 71,580

Peak discharge (base. 750 cfs).--Dee. 19 (10 a.m.) 1,340 ofs (7.82 ft); Dec. 23 (2 a.m.) 15,800 

ofs (22.33 ft); Dee. 26 (12 m.) 3,390 ofs (11.17 ft); Jan. 15 (2 p.m.) 1,180 ofs (8.54 ft); Jan. 25 

(7 a.m.) 1,320 efs (8.00 ft)j Feb. 22 (9:30 p.m.) 1,500 ofs (8.21 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

Branolforte Creek at Santa Cruz and San Lorenzo River at Santa Cruz.
SAN LORENZO RIVER BASIN 203

San Lorenzo River at Big Trees, Calif.

Location.--Lat 37"01'40", long 122°03<30", in Canada del Rincon Grant, on right bank

0.5 mile south of Big Trees station on Southern Pacific Railroad, 1.6 miles downstream 

from Zayante Creek, and 4 miles north of Santa Cruz County, Santa Cruz County.

Drainage area.--110 sq mi.

Records available. April 1937 to September 1956.

Gage. Water-stage recorder. Datum of gage is 217.0 ft (stadia level circuit by Topographic Division in 1955).

Average discharge -19 years, 147 cfs (106,400 acre-ft per year); median of yearly mean 

discharges, 120 cfs (86,900 acre-ft per year).

Extremes. Maximum discharge during year, 30,400 cfs Dec. 23 (gage height, 22.55 ft) 

from rating curve extended above 11,000 cfs on basis of slope-area determination of 

peak flow; minimum, 14 cfs Oct. 19.

1937-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.8 cfs June 25, 1939.

Remarks.--Records good except those for periods of doubtful or no gage-height record 

which are fair. Many small diversions above station for domestic supply. Records of 

chemical analyses for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

0.8 

1.0 

1.3 

1.6 

2.0 

2.5

15

21

36

54

86

160

3.0

4.0

6.0

8.0

10.0

12.0

262 

550 

1,3OO 

2,530 

4,320 

6,760

2.5 

3.0

20

27

55

97

197

365

730

5.0

7.0

9.0

12.0

15.0

18.0

1,180

2,450

4,090

7,270

11,500

17,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac-ft

Oct.

16

IS

15

15

15

15

15

15

15

15

15

11

17

15

15

15

16

17

16

16

16

16

16

16

*15

15

15

15 

15

15

16

480

15.5

952

Nov.

15

15

15

15

16

17

15

15

15

15

15

15

110

160

23

21

28

23

20

21

35

25

*26

26

23

21

20

19 

19

19

822

27.4

1,630

Dee.

140

65

40

35

34

540

75

68

120

61

44

38

34

31

30

37

1,910

*1,800

769

6,180

*17.000

2,710

1,100

3,690

1,420

872 

674

642

678

40,895

1,319

81,110

Jan.

971

794

630

572

830

714

797

926

674

603

526

474

442

660

1,400

1,100

800

560

480

640

560

560

700

580

1.700

1,600

1,300

940

740

620

540

24,433

788

48,460

Feb.

480

430

410

380

360

*348

323

302

281

267

253

237

227

215

*203

192

189

19?

194

393

466

1,180

1.550

686

603

564

484

438 

421

12,068

416

23,940

Mar.

376

344

*320

295

284

260

244

234

218

200

192

181

184

186

178

173

168

160

156

151

146

138

136

134

128

121

113

109 

109

109

112

5,859

189

11,620

Apr.

110

106

104

104

101

97

93

93

92

98

254

136

109

109

105

98

93

89

*88

87

86

82

81

81

84

230

179

115 

102

96

-----

3,302

110

6,550

May

93

90

98

126

102

102

98

96

104

95

94

86

83

81

80

79

76

75

74

73

71

71

71

*71

71

67

14

66

65

66

64

2,552

82.3

5,060

June

65

62

61

60

60

60

59

58

*56

55

58

56

56

54

54

54

52

50

51

50

50

48

48

48

47

46

44

42

11

41

1,586

52.9

3,150

July

41

42

42

*42

41

41

40

39

39

38

39

39

40

39

38

37

37

36

36

35

34

34

33

32

32

32

32

32 

31

32

30

1,135

36.6

2,250

Aug.

SSL

28

29

29

28

28

27

*27

27

27

27

26

26

25

24

24

25

25

25

25

24

24

23

23

22

22

23

23 

23

24

24

787

25.4

1,560

Sept.

23

21

22

21

21

21

21

22

24

21

20

21

21

21

20

20

20

20

22

*23

22

21

20

20

20

20

20

20

20

20

-- 

628

20.9

1,250

Calendar year 1955 : Max 17,000 Min 14 Mean 164 Ac-ft 119,100

Water year 1955-56 : Max 17,000 Min 15 Mean 258 Ac-ft 187,500

Peak discharge (baae, 1,400 cfs). Dec. 19 (11 p.m.) 3,450 cfs (9.11 ft); Dec. 23 (1:30 a.m.)

30,400 cfa (22.55 ft); Dec. 26 (11 a.m.) 7,410 cfa (12.12 ft)j Jan. 7 (9:30 p.m.) 1,650 cfs (5.83 ft);

Jan. 15 (8 p.m.) about 2,000 cfa; Jan. 25 (8 a.m.) about 2,500 cfs; Feb. 22 (9 p.m.) 3,470 cfs

* Discharge measurement made on this day.

Note. Doubtful or no gage-height record Nov. 13, 14, Dec. 1-4, 6, 20, 23, Jan. 14 to Feb. 5, 

Apr. 19, 20; discharge estimated on basis of 2 discharge measurements and records for station at 

Santa Cruz.
204 SM LORENZO RIVER BASIN

San Lorenzo River at Santa Cruz, Calif.

Location. Lat 36°59'20", long 122°01i40", in Santa Cruz, Santa Cruz County, at upstream 

end of Odd Fellows Cemetery, 1.1 miles upstream from Branciforte Creek and 2.1 miles 

upstream from mouth.

Drainage area. 115 sq mi.

Records available. October 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is 4.01 ft above mean sea level (levels by 

California Division of Highways).

Extremes. Maximum discharge during year, 30,400 cfs Dec. 23 (gage height, 23.10 ft), from 

rating curve extended above 4,500 cfs on basis of slope-area determination of peak flow; 

minimum, 1.6 cfs Oct. 7, 8, 9.

1952-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 3, 4, 9, 1955.

Remarks.--Records good except those for periods of doubtful or no gage-height record and 

indefinite stage-discharge relation, which are fair. Diversion directly above station 

for city of Santa Cruz domestic supply; also several smaller diversions above station 

for domestic supply.

Rating tables, water year 1955-56, except periods of indefinite stage-discharge 

relation (gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to Jan. 15 Jan. 16 to Sept. 30

2.2 3.0 4.0 360 6.1 430 4.3 14 6.0 305

2.3 7.2 4.5 540 6.5 610 4.4 16 6.5 515

2.4 13 5.0 810 7.0 860 4.5 21 7.0 820

2.5 23 6.0 1,560 8.0 1,540 4.7 44 8.0 1,540

2.7 51 7.0 2,450 11.0 4,700 5.0 89 9.0 2,450

3.0 98 9.0 4,350 14.0 9,200 5.5 175

3.5 210 11.0 6,600 19.0 19,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

5.7

e6

e6

6.2

6.3

6.4

5.7

5.2

5.4

8.2

e8

e8

7

(*)

5.8

5.3

5.2

4.8

7.7

8.7

205.6

6.63

408

Nov.

7.4

6.3

6.0

677

9.1

13

7.5

6.0

6.6

6.1

6.1

6.4

111

~3T 163

15

23

21

17

17

40

27

24 

33

23

18

21

16

15

718.2

23.9

1,420

Dec.

134

63

34

26

38

577

87

63

112

68

50

40

36

33

33

33

33

37

*1,940

1,840

 *790

6,350

*17,400 

*3,110

1,210

*3,750

1,560

*893

680

645 

675

42,340

1,366

83,980

Jan.

961

800

*606

538

855

720

769

980

690

625

547

488

462

7T5

*1,460

1,230

755

606

510

672

606

606

742 

624

1,750

1,720

1,400

1,000

794

672

594

25,497

822

50,570

Feb.

515

*460

434

400

384

356

333

308

288

270

264

252

243

238

230

*222

215

215

350" 213

515

1,300

1,400 

720

630

590

500

450

430

12,755

440

25,300

Mar.

390 35"&~

*330

310

280

258

240

232

222

213

207

197

189

185

177

173

171

164

162

161

161

161

161 

161

157

153

139

132

129

125

127

6,217

201

12,330

Apr.

127

125

122

119

115

112

105

100

99

100

202

lBT>

122

114

110

105

100

95

*95

95

97

95

94 

94

94

168

181

150

137

127

3,549

118

7,040

May

119

114

112

147

124

117

108

105

103

102

100

95

91

86

83

81

76

73

72

70

68

67

66 

*64

62

64

61

BT

61

66

64

2,682

86.5

5,320

June

65

67

S2

60

60

58

55

51

*51

47

48

48

47

48

45

47

44

44

43

41

41

40

39 

39

39

38

36

35

34

34

1,406

46.9

2,790

July

34

34

36

*38

35

32

32

34

31

32

32

36

36

38

40

636

32

26 

24

24

24

24

25

30

25

23

993

32.0

1,970

Aug.

23

5?

23

22

22

22

21

21

*19

18

18

19

17

17

17

17

16

T6

16

16

17

17

16 

16

16

16

16

16

17

17

17

563

18.2

1,120

Sept.

17

16

16

16

16

16

16

16

16

1§

15

15

15

15

15

15

15

15

15

*15

15

15

15 

15

15

15

15

15

15

15

463

15.4

918

Calendar year 1955: Max 17,400 Min 0 Mean 163 Ac-ft 118,100

Water year 1955-56: Max 17,400 Min - Jfean 266 Ac-ft 193,200

Peak discharge (base, 1,400 cfs).--Dec. 6 (3 a.m.) 2,730 cfs (7.31 ft); Dec. 19 (11 p.m.) 3,920 cfs 

,8.57 ft); Dec. 23 (3 a.m.) 30,400 cfs (23.10 ft): Dec. 26 (11 a.m.) 7,440 cfs (12.90 ft); Jan. 7 

(10:30 p.m.) 1,650 cfs (8.13 ft); Jan. 15 (9 p.m.) 2,130 cfs (8.67 ft); Jan. 25 (9 a.m.) 2,650 cfs 

(9.20 ft); Feb. 22 (about 10 p.m.) about 3,500 cfs.

* Discharge measurement made on this day.

e Stage-discharge relation indefinite; discharge Interpolated or estimated on basis of records for 

station at Big Trees.

Note.--Doubtful or no gage-height record Oct. 13-25, Feb. 22 to Mar. 5, Mar. 27-29; discharge estimated on basis of 2 discharge measurements, weather records, and records for station at Big Trees.
SAN LORENZO RIVER BASIN 205

Branciforte Creek at Santa Cruz, Calif.

Location. Lat 36°58'00", long 122°01'00", in Santa Cruz, Santa Cruz' County, 15 ft downstream from Market Street Bridge and 1.0 mile upstream from mouth.

Drainage area.--18.5 sq mi.

Records available.--January 1940 to September 1943, March 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is 11.22 ft above mean sea level (levels by 

Corps of Engineers). Jan. 3 to Nov. 14, 1940, staff gage at site 15 ft upstream at 

datum 3.90 ft higher. Nov. 15, 1940, to Nov. 25, 1941, staff gage at site 150 ft downstream and Nov. 26, 1941, to Sept. 30, 1943, water-stage recorder at site 75 ft downstream, both at datum 4.52 ft higher. Mar. 16 to July 27, 1952, staff gages at site 

150 ft downstream at present datum.

Average discharge. 7 years, 25.2 cfs (18,240 acre-ft per year).

Extremes. Maximum discharge during year, 8,100 cfs Dec. 22 (gage height, 22.04 ft), from 

rating curve extended above 530 cfs on basis of slope-area determination of peak flow; 

minimum, 0.4 cfs Nov. 9.

1940-43, 1952-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.1 cfs 

Aug. 18, 1954, Sept. 17, 1955.

Remarks. Records good except those for periods of doubtful or no gage-height record, which 

are fair. No storage or diversion above station.

Revisions. WSP 1285: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 25 to Jan. 14)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

3.0 

3.2 

3.5 

4.0

4.5

5.0

7.0

9.0

11.0

14.0

16.0

147

220

550

970

1,450

2,460

3,380

2.7

2.8

2.9

3.0

3.1

3.2 

3.4 

3.7

1.2

1.7

2.6

4.0

6.5

9.5

18

34

4.0

4.5

5.0

5.5

6.0

8.0

11.0

16.0

52

84

122

172

244

660

1,450

3,380

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.3

1.3

1.1

.9

.9

.9

.8

.7

77

.9

1.1

.9

.8

.8

.9

.9

.1

.3

~75.5

.5

.1

.1

.9

*.9

.9

.9

.9

.8

.8 

.7

30.8

0.99

61

Nov.

0.7

.7

.8

.7

.7

.8

.8

.8

.5

76

.7

.8

14

6.4

2.2

2.0

3.8

2.2

1.8

1.5

2.2

2.2

3.2

3.5

2.2

2.0

2.0

1.8

2.0

*2.0

65.6

2.19

130

Dec.

14

6.7

4.3

3.8

11

171

18

25

32

13

8.7

6.7

6.1

5.5

5.2

5.2

4.9

6.4

149

*145

189

*2,030

5^550

*440

174

608

125

*83

71

101 

152

7,964.5

257

15, 800

Jan.

264'

110

69

*63

*207

114

98

84

71

76

63

56

52

163

420

*176

99

83

69

112

78

106

95

76

413

214

130

87

63

50 

39

3,800

123

7,540

Feb.

33

*30

27

25

23

21

20

19

17

16

15

15

14

14

13

*12

12

12

12

12

14

35

41

24

28

26

20

17

17

------

584

20.1

1,160

Mar.

15

*14

13

12

12

12

11

10

9.9

9.5

9.2

8.9

8.6

8.3

8.0

7.7

7.7

7.4

7.4

7.4

7.4

7.1

7.1

6.8

6.5

6.2

6.0

5.8

5.5

5.5

268.1

8.65

532

Apr.

5.0

5.0

4.8

4.5

4.2

4.0

4.0

4.0

4.0

5.0

~8.9 19

7.1

6.5

6.0

5.8

5.5

5.5

*5.2

4.8

4.8

4.5

3.9

47?

6.1

18

12

8.0

6.2

5.8

192.3

6.41

381

May

5.5

5.5

9.3

~9.9 17

9.2

8.0

7.4

7.7

6.5

6.2

6.0

5.8

5.5

4.8

4.2

4.5

4.5

4.2

4.0

4.0

4.0

4.0

*3.9

4.0

4.0

3.6

3.4

3.4

3.6

5.5

176.9

5.71

551

June

370- 5.2

5.0

3.0

5.0

2.9

5.0

2.7

*2.7

2.0

2.2

2.2

2.1

2.1

2.1

2.2

2.0

1.9

275

2.0

2.0

2.0

2.1

2.1

2.1

2.1

2.0

2.0

1.9

2.0

69.6

2.32

138

July

2.0

2.1

2.2

*2.0

2.0

2.0

2.0

2.0

2.0

2.0

1.9

1.9

1.9

1.9

1.9

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.7

1.6

T76

1.6

1.6

1.6

1.6

56.9

1.84

113

Aug.

is

.5

.5

.5

.5

.5

.5

* .5

.5

.5

^6

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5 

.5

46.5

1.49

92

Sept.

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

* .5

.5

.5

.5

.5

.5

.5

.5

* .5

.5

.5

45.0

1.50

89

Calendar year 1955: Max 3,350 Mln 0.5 Mean 28.9 Ac-ft 20,910

Water year 1955-56: Max 3,350 Mln 0.5 Mean 36.3 Ac-ft 26,390

Peak discharge (base. 600 cfs).--Dec. 22 (11 p.m.) 8,100 cfs (22.04 ft); Dec. 26 (9:30 a.m.) 1,490 

cfs (11.14 ft); Jan. 15 (2 p.m.) 690 cfs (8.12 ft); Jan. 25 (7 a.m.) 1,000 cfs (9.57 ft). 

* Discharge measurement made on this day.

Note.--Doubtful or no gage-height record Dec. 23, 24, July 4 to Aug. 8, Aug. 20 to Sept. 30; dlslarge estimated on basis of 5 discharge measurements and records for San Lorenzo River at Santa

'1]!7. .

charge es 

Cruz.
206 PESCADKRO CREEK BASIN

Pescadero Creek near Pescadero, Calif.

Location. Lat 37°15»40", long 122°19'40", In SW£ sec. 5 (revised), T. 8 S., R. 4 W., on 

left bank at downstream side of highway bridge, 3.0 miles east of Pescadero and 

5.3 miles upstream from mouth.

Drainage area. 46.2 sq ml.

Records available. Apr 11 1951 to September 1956.

Gage_. Water-stage recorder. Datum of gage Is 62.3 ft above mean sea level.

Average discharge. 5 years,-54.6 cfs (39,530 acre-ft per year).

Extremes.--Maximum discharge during year, 9,420 cfs Dec. 23 (gage height, 21.27 ft), from 

rating curve extended above 2,700 cfs on basis of slope-area determination of peak flow; 

no flow for part of Oct. 9.

1951-56: Maximum discharge, that of Dec. 23, 1955; no flow for part of each day 

June 17, Aug. 20, 1954, June 17, Sept. 12, 13, Oct. 9, 1955.

Revisions. Figures of maximum discharge for the water years 1952 and 1953 have been 

revised to 3,870 cfs Mar. 14, 1952 (gage height, 15.39 ft) and 4,030 cfs Dec. 7, 1952 

(gage height, 15.61 ft), superseding those published -In WSP 1245 and 1285, respectively.

Remarks. Records good except those for Mar. 5 to Apr. 11, which are fair. No diversion. 

Small logging pond In headwaters can cause regulation during flushing operations.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9 

10

11

121*5

14

13

16

17

18

19

20

21

22 

23 

24

25

26 

27

28

29

30

31

Total

Mean

AC-ft

Oct.

1.1

1.1

3.8

3.8

2.3

1.7

2.0

1.3

it!

1.7

2.6

2.3

2.6

1.5

.9

1.3

1.7

2.0

2.3

2.0

2.0 

.9 

1.5

*2.3

2.6 

2.6

2.6

2.6

2.3

2.0

61.0

1.97

121

Nov.

2.0

2.3

2.0

2.0

2.0

1.5

1.5

1.5

1.5 

4.1

2.6

1.5

2.3

ii

6.3

3.8

5.1

5.9

4.1

3.8

6.7

6.3 

*4.4 

5.1

5.5

3.8

3.5

3.2

2.9

2.9

111.1

3.70

220

Dec.

5.6

15

8.8

6.7

6.7

24

21

14

28 

18

11

S.3

7.5

6.3

1^5

5.5

5.9

11

* 1,010

816

*293

1,870 

*5,560

ITfoo

415

* 1,550 

574

*322

240

205

187

14,550.8

469

28,860

Jan.

211

202

172

159

190

*177

232

313

218 

*205

189

157

144

342

1.010

*707

374

302

250

363

358

331 

415 

326

655

656 

558

430

330

271

231

10,478

338

20,780

Feb.

199

176

*155

140

128

116

111

97

88 

80

75

70

64

60

*56

53

51

51

47

104

135

291 

550 

240

180

163 

149

*141

143

3,913

135

7,760

Mar.

137

135

*120

107

100

93

89

85

77 

73

71

71

68

69

69

68

67

64

61

60

59

55 

53 

53

52

50 

49

47

45

45

45

2,232

72.0

4,430

Apr.

45

43

42

41

41

39

37

37

37 

39

62

42

31

31

30

29

28

*26

25

23

23

 52 22 

22

22

28 

29

24

23

23

966

32.2

1,920

May

21

21

21

26

23

23

23

24

H

25

23

22

20

20

19

18

18

17

17

17

16 

16 

*16

15

15 

15

15

15

15

15

607

19.6

1,200

June

13

14

13

14

14

13

13

12

*12 

12

12

11

11

11

12

12

11

11

11

11

10

10 

9.9 

9.9

9.9

9.4 

9.4

9.0

8.8

8.4

337.7

11.3

670

July

S.4

9.0

8.8

8.8

*8.6

8.4

S.4

S.3

8.1 

S.I

7.9

7.7

7.9

7.7

7.7

7.5

7.5

7.2

7.2

7.0

6.6

6.6 

6.5 

6.3

6.0

5^8 

6.0

5.8

5.8

5.8

5.8

227.2

7.33

451

Aug.

5.6

5.5

5.5

5.6

6.0

6.0

5.8

5.6

5.5 

*5.5

5.3

5.3

5.3

5.3

5.2

5.2

5.2

5.2

5.0

5.2

5.0

4.8 

4.7

its

4.7 

4.7

4.7

4.7

4.7

4,5

160.3

5.17

318

Sept.

4.5

4.1

4.1

5.3

4.4

3.9

3.8

3.8

4.1 

3.9

4.1

4.1

4.1

4.2

4.1

3.9

3.9

3.9

5.8

4.2

4.2

4.1 

3.8 

3.6

3.6

3.8 

3.6

*3.6

3.5

3.2

121.2

4.04

240

Calendar year 1955: Max 5,560 Mln 0.3 Mean 55.2 Ac-ft 39,980

Water year 1955-56: Max 5,560 Mln 0.5 Mean 92.3 Ac-ft 66,970

Peak discharge (base. 500 cfsh Dec. 19 (5:30 p.m.) 1,900 cfs (11.58 ft); Dec. 23 (2 a.m.) 9,420 

cfs (21.27 ft); Dec. 26 (11 a.m.) 2,830 cfs (14.15 ft);-Jan. 7 (10 p.m.) 534 cfs (7.72 ft); Jan. 15 

(7 p.m.) 1,780 cfs (12.00 ft); Jan. 25 (10 a.m.) 1,030 ofs (9.87 ft); Feb. 23 (12 p.m.) 1,110 cfs 

(10.54 ft).

* Discharge measurement made on this day.
SAN FRANCISQUITO CREEK BASIN 207

San Franclsqulto Creek at Stanford University, Calif.

Location. Lat 37°25'25", long 122°11'18", In Rlnconada del Arroyo de San Franolsqulto 

Grant, on right bank at golf course, 1.0 mile downstream from confluence with Los 

Trancos Creek and 1.2 miles west of Stanford University Post Office, Santa Clara County.

Drainage area. 37.7 sq ml.

Records available. January 1931 to June 1941, October 1950 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage Is 120 ft (from topographic map).

Average discharge. 16 years (1931-41, 1950-56), 20.7 cfs (14,990 acre-ft per year).

Extremes.--Maximum discharge during year, 5,560 cfs Dec. 22 (gage height, 13.60 ft); no 

flow during several months.

1931-41, 1950-56: Maximum discharge, that of Dec. 22, 1955; no flow at times each 

year.

Remarks.--Records good. Flow regulated by Searsvllle Lake (capacity, 952 acre-ft). About 

900 acre-ft diverted annually to Los Trancos and Lagunlta Canals for Irrigation on the 

Stanford University campus below station.

Revision. WSP 1345: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Aug. 4-16, Aug. 27 60 Sept. 3)

0.13 

.2 

.3

.7

.8

1.0

Oct. 1 to July 25

0

1.8

3.6

5.8

8.6

12

21

1.3 

1.6 

2.0 

2.5 

3.0 

4.0 

6.0 

9.0

40

63

104

181

292

6OO

1,380

2,870

July 26 to Sept. 30

0.17 0 

.3 .2

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0.1

.1

.1

.1

.1

' .1.1

.1

.1

.1

.2

72

.2

.2

.2

.2

.2

.2

.1

.1

.1

00" 

0

O

0

 0

.2

.2

.2

.2

3.7

0.12

7.3

Nov.

0.2

.2

.2

.2

.3

.3

.3

.4

.4

.4

.1

TT

.6

1.0

.4

.1

.5

.4

.4

.6

.6

.6

.9 

1.7

T75

1.4

.8

.1 *.l

.1

14.9

0.50

30

Dec.

0.6

.2

.1

7T

.2

3.4

2.1

.9

.7

.1

.1

.1

.1

.1

.2

.3

.3

.7

222

149

80

1,720

2,650 

409

146

*853

258

100

70

67

71

6,805.3

220

13,500

Jan.

83

66

52

45

73

50

105

130

63

73

52

42

38

S7T

755

314

149

127

96

196

151

131

187 

132

369

528

531

346

200

146

120

5,919

191

11,740

Feb.

97

75

66 *47

52

48

46

45

42

38

34

31

29

30

32

28

26

22

2T

72

1O8

197

T59" 325 

113

86

72

66

57

2,015

69.5

4,000

Mar.

52

46

43

38 *36

34

34

31

28

25

24

22

20

19

18

18

17

14

12

15

14

14

14 

13

14

14

8.6

7.6

7.0

5.3

ii

657.9

21.2

1, 3OO

Apr.

1.1

4.8

4.4

3.8

5.1

3.0

1.1

3.0

3.8

20

36

TT

8.0

*8.6

6.6

7.0

7.0

5.8

5.6

4.2

4.0

3.8

3.8 

1.8

.6

1.7

1.0

.6

1.1

168.9

5.63

335

May

0.6

.5

.9

*4.6

3.6

2.3

1.4

3.5

~8.2 16

5.1

3.2

2.7

1.7

.9

.6

.3

.2

7?

.2

.2

.2

.2 

.2

.2

*.2

.2

.2

.2

.2

.2

58.9

1.90

117

June

0.2

'.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

00"

O

0

0

3.3

0.11

6.5

July

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

^

0

O

0

0

0 

0

0

0

O

0

0

0

0

1.6

0.05 3.2'

Aug.

O

.1

.1

.1

.1

0

O

0

.1

.1

.1

.1.1

.1

.1

.1

.1

* 1

!i

il

.2

.1

.1 

.1

.1

.1

.1

.1

.1

.1

.1

2.9

0.09

5.8

Sept.

~7T 0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

il

.1

.1

.1 

.1

.1

.1

.1

.2

.1 »*.l

3.2

0.11

6.3

Calendar year 1955 : Max 2,650 Mln O Mean 22. 0 Ao-ft 15,93O

Water year 1955-56 30 : i Max FIOA. 2,650 i*i w^v Mln i-Lj.it O ^ Mean picaii 42.8 ft' w Ao-ft .HU A ^ 31,050 <^-*-t v^w

Peak discharge (base. 7OO ofs). Dec. 22 (12 p.m.) 5.560 efs (13.60 ft); Dec. 26 (8;5O a.m.) 1.47O 

cfs (6.20 ft); Jan. 14 (8 p.m.) 1,820 cfs (6.95 ft); Jan. 26 (6:30 p.m.) 1,010 cfs (5.1O ft); 

Feb. 22 (12 p.m.) 877 cfs (4.76 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.
208 MATADERO CREEK BASIN

Matadero Creek at Palo Alto, Calif.

Location. Lat 37°25'19", long 122°08'06", in Rinconada de San Francisquito Grant, on left 

bank 10 ft upstream from bridge at intersection of Lambert and Rose Streets and 

2.0 miles southeast of post office at Palo Alto, Santa Clara County.

Drainage area. 8.10 sq mi.

Records available. July 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 25 ft (from topographic map).

Extremes. Maximum discharge during year, 854 cfs Dec. 22, from rating curve extended 

above 390 cfs on basis of slope-area determination of peak flow; maximum gage height, 

9.88 ft Dec. 23 (backwater from culvert); no flow for many months.

1952-56: Maximum discharge, that of Dec. 22, 1955; maximum gage height, that of 

Dec. 23, 1955; no flow for many months each year.

Remarks. Records good except those for period of indefinite stage-discharge relation, 

which are fair.

Rating table, water year 1955-56, except period of indefinite stage-discharge

relation (gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Dec. 21, 26)

3.3

3.4

3.5

3.6

3.7

3.8 

4.0 16

4.3

4.6 

5.0 

5.5 

6.0 

6.5

32

52

88

150

236

350

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

00"

0

0

0

0

0

.4

0

0

0

0

0

0

0

0

0

.2

**17

8.8

*.3

*e!71

*e335

*37

5.8

*151

*12

5.3

3.1

1.9

*3.7

752.5

24.3

1,490

Jan.

7.0

4.1

2.1

37?

6.7

2.7

19

9.1

4.1

11

5.0

3.1

2.3

65

*85_

12

4.1

7.0

3.5

26

5.3

5.6

5.9

6.2

39

*62

69

31

9.1

5.9

4.3

525.7

17.0

1,040

Feb.

3.9

2.4

2.3

*2.3

2.1

1.9

1.6

1.3

1.1

1.1

1.0

.9

.6

.6

.8

*.6

.3

TS

.6

2.7

1.6

20

17

3.5

2.0

.3

1.1

1.9

2.1

77.9

2.69

155

Mar.

1.6

TT6

1.4

1.3

*1.2

.9

.8

.8

.8

.7

.6

.4

.4

.3

.2

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

00~

0

15.5

0.50

31

Apr.

0*Q0

0

0

0

0

0

0

0

5.0

.1

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

0

5.2

0.17

10

May

-TJ0

0

0

0

0

0

T79~ 5.9

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

7.8

0.25

15

June

(*)

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955 : Max 335 Mln 0 Mean 2,40 Ao-ft 1,740

Water year 1955-56 : Max 335 Mln 0 Mean 3,78 Ac-ft 2,740

Peak discharge (base. 50 cfs).--Dee. 19 (2:30 p.m.) 64 cfs (4.75 ft); Dec. 22 (9:30 p.m.) 854 cfs 

(9.60 ftlj DecT 26 (9 a.m.) 590 cfs (7.50 ft); Jan. 7 (6 p.m.) 135 efs (5.39 ft); Jan. 15 (2 p.m.) 

336 cfs (6.44 ft); Jan. 20 (6:30 a.m.) 139 cfs (5.42 ft); Jan. 27 (8:30 p.m.) 284 efs (6.18 ft); 

Feb. 22 (8 p.m.) 97 cfs (5.08 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

e Stage-discharge relation indefinite; discharge estimated on basis of 4 discharge measurements 

and records for San Francisquito Creek at Stanford University.
STEVENS CREEK BASIN 209

Stevens Creek near Cupertino, Calif.

Location. Lat 37°18'20", long 122°04'25", in SV& sec. 22, T. 7 S., R. 2 W., on left bank 

on downstream side of highway bridge, 0.6 mile downstream from Stevens Creek Dam and 

2.5 miles southwest of Cupertino.

Drainage area. 18.0 sq mi.

Records available. January 1930 to September 1956.

Gage. Water-stage recorder.. Altitude of gage is 385 ft (from topographic map).

Average discharge.--26 years, 12.6 cfs (9,120 acre-ft per year); median of yearly mean discharges, 8.8 cfs (6,370 acre-ft per year).

Extremes.--Maximum discharge during year, 1,420 cfs Dec. 23 (gage height, 8.25 ft); mini- 

 mum daily, 0.2 cfs Oct. 1-8, Oct. 14 to Nov. 12, Nov. 25 to Dec. 1.

1930-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during 1930-34, 

1936, 1939, 1944, 1947-52.

Remarks.--Records good. Flow regulated by Stevens Creek Reservoir beginning in 1936 

{usable capacity, 4,000 acre-ft); water released during summer.

Revisions (water years).--WSP 1285: Drainage area. WSP 1395: 1930(M), 1938(M), 1940, 

1941(M), 1952.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 30 to Jan. 16, July 26 to Aug. 7)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 30

1.3

1.4

1.5

1.6

1.7

1.8 

2.0

0.2 

1.0 

2.5 

5.2 

8.9

2.2 

2.5 

3.0 

3.5 

4.0 

4.5

220

345

443

529

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.1

0.2

.7

1.2

1.8

2.5

3.7

5.9

10

2.3 

2.5 

2.7 

3.0 

3.5 

4.0 

5.0

63

111

222

372

560

Discharge, In cubic feet per second, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

°4

T7

.2

.2

.2

.2

.2

.2

.3

.3

4 . 4

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

7.0

0.23

14

Nov.

 0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

1.0

.4

.3

.4

.7

.7

.6

.8

1.1

1.0

-^

.2

.2

.2

.2

*.2

.2

12.5

0.42

25

Dec.

 40 2

1 0

9

9

8

1 2

1 4

9

1 4

1 4

1 1

2 3

5 9

11

14

12

2.1

8.5

2.5

.5

15

*517

517

291

475

*212

124

87

73

64

2,445.4

78.9

4,850

Jan.

48

66

53

43

32

32

*59

71

73

73

73

76

82

82

87

130

102

91

82

88

95

120

151

151

151

202 190"

153

153

143

117

3,069

99.0

6,090

Feb.

49

43

*74

74

67

60

60

60

28

27

44

39

24

16

15

15

15

15

14

50

45

190

 US- 261

132

130

113

66

63

1,902

65.6

3,770

Mar.

62

*5J

37

18

12

12

22

40

41

38

37

35

33

34

31

28

30

29

27

28

27

27

26

25

26

25

23

23

23

22

22

916

29.5

1,820

Apr.

22

20

19

19

18

19

17

16

16

17

29

31

3TT

20

16

16

16

16

16

*15

14

14

14

15

15

15

15

15

16

16

537

17.9

1,070

May

16

16

15

15

15

15

17

18

17

17

17

17

16

16

17

17

17

17

17

17

17

16

*17

1919-

1916-

14

15

19

18

518

16.7

1,030

June

19

24

24

18

16.

16

16

16

16

16

17

19

19

20

19

19

20

19

19

20

19

17

18

19

*18

16

17

21

23

24

564

18.8

1,120

July

22

19

19

17

17

20

20

19

19

19

19

19

19

19

19

18

17

18

17

17

17

17

17

20

20

19

19

19

19

19

20

579

18.7

1,150

Aug.

20

20

18

19

20

23

*24

23

20

19

17

16

16

16

16

16

15

14

14

14

13

13

12

12

12

12

12

12

12

11

10

491

15.8

974

Sept.

10

10

10

10

10

9.1

8.7

9.1

8.7

8.3

8,3

9.1

9.5

8.7

7.5

7.9

7.1

6.7

7.1

6.5

*7.7

12

11

11

11

10

11

14

12

8.3

280.1

9.34

556

Calendar year 1955: Max 517 Mln 0.2 Mean 11.2 Ao-ft 8,090

Water year 1955-56: Max 517 Mln 0.2 Mean 30.9 Ao-ft 22,470

Discharge measurement made on this day.
210 GUADALOPE RIVER BASIN

Alamltos Creek near Edenvale, Calif.

Location. Lat 37°14'08", long 121°52'08", In SW£ sec. 16, T. 8 S., R. 1 E., on right bank 

0.6 mile upstream from confluence with Guadalupe Creek and 3.2 miles southwest of Edenvale. Oct. 1 to Dec. 23, 1955, at site 0.2 mile downstream; Jan. 3 to May 17, 1956, 

at site 0.2 mile upstream.

Drainage area. 35.0 sq ml.

Records available.--January 1930 to September 1956.

. Water-stage recorder. Altitude of gage Is 200 ft (from topographic map). Prior to 

Jan. 13, 1952, water-stage recorder and Jan. 13 to Dec. 18, 1952, staff gage, 1,400 ft 

downstream at different daturas. Dec. 19, 1952, to Sept. 30, 1953, water-stage recorder 

and Oct. 1, 1953, to Dec. 23, 1955, staff gage at site 0.2 mile downstream and Jan. 3 

to May 17, 1956, staff gage at site 0.2 mile upstream at different datums.

Average discharge.--26 years, 18.1 cfs (13,100 acre-ft per year).

Extremes. Maximum discharge during year, 4,140 cfs Dec. 23 (gage height, 6.6 ft, from 

flooflmarks, site and datum then in use), from rating curve extended above 110 cfs on 

basis of slope-area determination of peak flow; no flow for several months.

1930-56: Maximum discharge, that of Dec. 23, 1955; no flow for several months each 

year except 1942-43.

Remarks. Records fair below 100 cfs and poor above. Beginning in 1935, flow regulated by 

CaTero Reservoir (capacity, 9,213 acre-ft) and Almaden Reservoir (capacity, 2,000 acreft); water released during summer. Small diversions above station.

.soharge. In ouble feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

(»)

0

0

0

Dee.

0

ff

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*a50

330

3200

*35^00g 

3800

3200

3500

3300

3200

a!30

a 100

3150

5,660

183

11,230

Jan.

3100

1TO

a40

*24

39

35

24

45

26

34

33

22

20

28

21

33

27

20

22

26

25

26

*26 

325

350

*3lOO

98

79

52

50

46

1,266

40.8

2,510

Feb.

34

33

49

*67

63

55

60

60

60

50

41

27

25

24 *&

30

30

24

24

66

60

138

~91 264

79

50

46

48

44

1,666

57.4

3,300

Mar.

44

76

»65

61

54

61

~4T 132

41

97

101

20

17

17

17

17

17

15

15

*12

11

TT

11

15

15

17

18

18

18

18

17

1,095

35.3

2,170

Apr.

17

*17

15

15

15

14

30

41

51

3J

38

33

30

30

18

15

15

15

14

14

14

12

18 

18

30

38

41

44

41

25

751

25.0

1,490

May

17

37

33

*37

61

54

33

30

38

34

36

38

33

30

30

33

30

*a29

28

28

27

27

27

27

27

 27

28

28

28

27

27

987

31.8

1,960

June

27

27

27

If25

27

27

27

26

26

26

U

W

26

26

26

26

26

26

26

26

24

23 

23

23

*25

24

24

25

26

770

25.7

1,530

July

27

2T

27

27

27

26

26

26

26

26

26

26

26

26

26

27

26

26

26

26

25

25

24 

23

23

21

20

19" 19

19 

19

763

24.6

1,510

Aug.

19

19

*20

19

19

19

19

18

15

18

18

21

20

21

22

22

20

20

20

21

22

24

24

25

24

24

24

24

24

24 

23

655

21.1

1,300

Sept.

25

21

23

If

23

23

23

24

24

24

24

24

24

24

24

24

24

23

*23

24

23

23

24 

23

23

23

24

23

23

23

706

23.5

1,400

Calendar year 1955: Max 3,000 Mln 0 Mean 20.8 Ao-ft 15,040

Water year 1955-56: Max 3,000 Mln 0 Meaji 39.1 Ao-ft 28,400

* Discharge measurement or observation of no flow made on this day. 

a Doubtful or no gage-height record; discharge interpolsted or estimated on basis of 4 discharg 

measurements, records for nearby stations, and unpublished records for upstream station.
GUADALUPE RIVER BASIN 211

Guadalupe Creek at Guadalupe, Calif.

Location. La t 37°13'05" , long 121°54 I 35", In SWy sec. 19, T. 8 S., R. IE., on left bank 

0.5 mile northwest of Guadalupe and 3.5 miles upstream from confluence with Alamitos 

Creek.

Drainage area. 12.7 sq mi.

Records available. --January 1930 to September 1956. Published as Los Capitancillos Creek 

at Ouadalupe, 1945-53 .

Gage. Water-stage recorder and concrete control. Altitude of gage is 325 ft (from topographic map).

Average discharge. 26 years, 11.0 cfs (7,960 

charges, 8.9 cfs (6,400 acre-ft per year).

per year); median of yearly mean disExtremes .--Maximum discharge during year, 1,320 cfs Dec. 22 (gage height, 4.20 ft), from 

rating curve extended above 530 cfs; minimum daily, 0.2 cfs Oct. 1-3, 6-9, 12-14, 28-31, 

Nov. 10, 11.

1930-56: Maximum discharge, 1,330 cfs Jan. 12, 1952 (gage height, 4.22 ft), from 

rating curve extended above 530 cfs; no flow during part of each year except 1937-38, 

1941-45, 1956.

Remarks . Records good. Flow regulated by Guadalupe Reservoir beginning in 1936 (capacity, 

3,500 acre-ft); water released during summer. Small diversions above station.

Revisions. WSP 1285: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.2 

.3 

.4 

.5 

.6 

.7 

.8

1.0

o. 

.1

.6

1.6

3.4

6.2

10

23

1.2 

1.4 

1.6 

2.0 

2.5 

3.0 

3.5

42

67

96

182

364

601

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

°4

.2

.2

.3

.3

.2

.2

.2

.2

.3

.3

.2

.2

.2

.3

.3

.3

tl

.4

.4

.4

.4

.4

.3

*.3

.3

.2

.2

.2

.2

8.6

0.28

17

Nov.

0.3

.3

.3

.3

.4

.4

.4

.3

.4

il

.2

.3

1.8

T74

.9

1.0

1.1

1.1 

1.1

1.0

1.5

1.1

1.2

1.2

1.1

1.1

1.1

1.1

1.1

*1.1

24.8

0.83

49

Dec-.

1.6

1.9

1.4

1.3

1.2

1.8

1.8

2.1

2.4

2.1

1.8

1.4

1.4

1.4

1.4

1.4

1.3

10 

160

85

30

171

701

175

128

*269

172

100

75

66

86

2,255.7

72.8

4,470

Jan.

75

74

70

*71

77

73

80

80

74

74

70

53

36

37

42

*41

41

47 

46

41

39

38

38

38

60

75

81

5T

77

77

78

1,884

60.8

3,740

Feb.

80

70

43

*29

25

21

19

17

16

15

15

14

14

13

13

13

13

13

15

42

29

108

257

*T5?

87

75

55

49

43

1,329

45.8

2,640

Mar.

4037"

*35

31

30

27

25

24

38

33

19

16

15

15

14

14

13

13 

13

13

13

13

12

IS

13

13

13

13

13

13

13

607

Apr.

13

13

13

13

12

12

11

11

12

13

26

15

*13

13

12

12

11

11 

11

11

11

11

11

10

IT

13

12

12

11

11

371

19.61 12.4

1,200 736

May

11

11

11

11

11

10

10

11

11

11

10

10

9.8

9.8

9.3

9.3

9.3

9.3 

9.3

9.3

9.3

9.3

*9.3

9.3

9.3

9.3

9.3

8.9

87?

14

M

318.3

10.3

631

June

23

IS

18

18

18

18

18

18

18

18

18

17

17

17

17

17

17

17 

17

17

17

17

17

18

*18

17

16

IT

17

18

528

17.6

1,050

July

18

T?

19

19

21

22

22

23

24

24

25

26

24

25

25

25

24

24 

23

23

23

23

22

22

21

21

21

21

20

19

18

686

22.1

1,360

Aug.

18rs

18

18

18

18

*18

18

18

18

18

18

18

18

18

18

15

14 

14

14

14

14

13

13

13

13

13

13

13

13

13

490

15.8

972

Sept.

13 u

13

13

12

12

12

11

11

10

9.8

9.8

9.8

9.3

9.3

9.3

9.3

8.9 

*9.3

8.9

8.5

4.7

.9

ITT

1.1

1.2

1.3

1.3

1.0

1.0

235.8

7.86

468

Calendar year 1955: Max 701 Mln 0 Mean 11.1 Ac-ft 8,030

Water year 1955-56: Max 701 Mln 0.2 Mean 23.9 Ac-ft 17,330

Discharge measurement made on this day.
GUADALUPE RIVER BASIN

Los Gatos Creek at Los Gatos, Calif.

Location. Lat 3?°21'30", long 121°59'15", in NE£ sec. 29, T. 8 S., R. 1 W., on left bank 

0.3 mile downstream from Trout Creek, 0.5 mile downstream from Lexington Reservoir, and 

1.0 mile south of Los Gatos.

Drainage area. 38.9 sq mi.

Records available. January 1930 to May 1944, October 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 460 ft (from topographic map). January 

T930 to September 1943 at site 1 mile downstream and October 1943 to May 1944 at site 

0.5 mile downstream, at different datums.

Average discharge. 16 years (1930-43, 1953-56), 43.0 cfs (31,130 acre-ft per year).

Extremes.--Maximum discharge during year, 1,460 cfs Feb. 23 (gage height, 7.45 ft), from 

rating curve extended above 580 cfs on basis of computation of peak flow over dam; 

minimum daily, 0.3 cfs Oct. 4-10.

1930-44, 1953-56: Maximum discharge, 7,110 cfs Feb. 27, 1940 (gage height, 14.71 

ft, site and datum then in use), from rating curve extended above 2,300 cfs by logarithmic plotting; no flow during part of most years.

Remarks. Records good. Plow regulated by Lexington Reservoir beginning in 1953 (capacity, 

25,000 acre-ft) . Several diversions for irrigation above station; diversion by San 

Jose Water Works during year, 12,000 acre-ft. Records of chemical analyses for the 

water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Jan. 1 to Feb. 22)

Oct. 1 to Feb. 23 Feb. 24 to Sept. 30

1.8

1.9

2.0

2.1 

2.3 

2.7 

3.0

0.2

.5

1.1

1.9

4.6

14

24

3.5 4.0'

4.5

5.0

5.5

6.0

7.0

47

84

144

240

378

575

1,130

2.6

2.7 

3.0

6.0

8.0

18

3.5 

4.0 

4.5

41

83

144

Note. Same as preceding 

table above 4.5 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.7

.8

.4 

.3

73

.3

.3

.3

.3

.3

~T7 3.4

.5

.4

1.4

.6

.9

.8

.6

.9

1.3

1.3

.9

.7

.6

*.5

.5

.6

.5

.5

.5

23.1

0.75

46

Nov.

0.6

.6

.6 

.6

.7

.8

.6

.6

.5

.5

.5

.5

3.1

9.5

5.4

14

.5

.5

10

16

.9

2.2

6.8

19

19

18

17

19

*22

22

212.0

7.07

420

Dec.

10

7.6

12 

9.3

5.4

1.4

^8

6.2

5.2

7.0

6.2

8.6

14

11

6.0

3.0

2.6

8.5

53

26

7.0

85

199

48

27

45

31

29

24

31

585

1,117.8

36.1

2,220

Jan.

490

346

318 

310

310

310

*312

312

307

304

301

301

301

298

304

298

264

220

200

202

202

202

155

122

266

310

257

233

222

220

218

8,415

271

16,690

Feb.

216

156

103 

*102

102

87

125

88

45

32

38

44

43

42

40

38

38

36

32

28

37

121

*968

*482

343

324

315

310

192

4,527

156

8,980

Mar.

30

*62

62 

62

74

84

86

106

*178

117

104

54

32

21

7.6

10

20

35

36

52

*60

47

62

53

42

34

33

44

59

55

54

1,775.6

57.3

3,520

Apr.

54

54

47 

44

45

45

50

51

62

90

51

49

71

71

71

106

"71 124

39

 51

55

55

50

44

50

50

45

45

54

62

1,756

58.5

3,480

May

66

66

47 

39

35

39

39

39

42

48

53

56

56

48

50

58

59

46

43

45

48

52

*56

56

65

"69 69

66

65

55

47

1,626

52.5

3,230

June

44

46

50 

48

81

63

56

59

60

60

60

62

68

74

73

71

68

64

59

57

57

56

56

56

*56

54

52

47

37

37

1,731

57.7

3,430

July

37

38

39

42

43

43

50

66

58

54

47

44

44

44

47

49

49

48

48

48

48

47

47

47

47

47

47

47

47

47

47

1,456

47.0

2,890

Aug.

47

41

H48

47

47

47

44

42

40

39

37

37

33

33

33

32

32

32

32

32

32

32

33

33

43

46

46

46

45

1,229

39.6

2,440

Sept.

45

45

44 

44

44

44

44

43

43

44

44

44

45

53

50

44

41

41

41

30

*44

44

44

42

37

37

37

39

42

41

1,280

42.7

2,54C

Calendar year 1955 : Max 62 Min 0.1 Mean 11.6 Ac-ft 8,400

Water year 1955-56: Max 968 Min 0.3 Mean 68.7 Ac-ft 49,890

* Discharge measurement made on this day.
GUADALUPE RIVER BASIN 213

Guadalupe River at San Jose, Calif.

Location.--Lat 37°20iOO", long 121°54'00", at San Jose, Santa Clara County, on right bank 

100 ft downstream from Los Gatos Creek.

Drainage area. 131 sq mi.

Records available.--January 1930 to September 1956. Prior to 1945, published as Guadalupe 

Creek at San Jose.

Gage.--Water-stage recorder. Altitude of gage is 80 ft (from topographic map).

Extremes.--Maximum discharge during year, 5,570 efs Dec. 23 (gage height, 13.94 ft); no 

flow for several months.

1930-56: Maximum discharge, 8,680 cfs Feb. 37, 1940 (gage height, 11.88 ft), from 

rating curve extended above 3,200 cfs by logarithmic plotting; no flow during parts of 

each year.

Remarks.--Records poor. Flow extensively regulated by reservoirs in headwaters beginning 

in 1936 (combined capacity, 46,000 acre-ft in 1954) with water released during summer 

for percolation in spreading basins on tributaries. Diversions by San Jose Water Works 

for urban use (see Los Gatos Creek at Los Gatos, preceding page). Diversion of 

916 acre-ft into Alamitos Percolation Ponds from Coyote Creek basin during year.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(»)

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o .8

0

0

0

0

*0 

0

0

0

0

0

0

0

0.8

0.03

1.0

Dec.

0

0

0

0

0

6.7

0

13

1.0

0

0

0

0

0

0

0

0

13

287

243

50

400

*4,490 

*1,430

474

942

*468

243

160

111

9,562.7

308

18,970

Jan.

446

449

392

420

455

411

422

473

411

428

417

392

366

434

*504

455

397

322

296

345

293

310

298 

3"6T 204

590

473

408

356

332

312

12,172

393

24,140

Feb.

291

236

*156

162

160

122

134

111

106

60

39

30

17

11

*10

9.0

13

11

11

210

195

323

1,690 

*875

 586

482

434

408

352

7,244.0

250

14,370

Mar.

96

*91

102

97

88

88

111

136

160

120

122

60

8.0

4.0

0

0

0

0

0

.2

21

5.0

7.0

16

1.0

0

0

0

2.8

6.4

4.0

1,346.4

43.4

2,670

Apr.

2.4

*3.7

1.0

0

0

0

0

0

11

11

33

32

5.2

6.4

4.2

4.1

0

0

0

*0

0

0

0 

0

0

.4

6.5

9.0

9.7

2.8

142.4

4.75

282

May

1.1

.4

.2

2.0

7.7

3.1

2.9

2.4

5.3

3.2

1.3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

29.6

0.95

59

June

(*)

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0~~ 3.7

0

0

0

0

0

0

0

0

0

0

3.7

0.12

7.3

Calendar year 1955: Max 4,490 Win 0 Mean 27.9 Ac-ft 20,170

Water year 1955-56: Max 4,490 Mln 0 Mean 83.3 Ac-ft 60,500

Discharge measurement or observation of no flow made on this day.

493801 O - 59 - 15
214 GUADALUPE RIVER BASIN

Saratoga Creek at Saratoga, Calif.

Location.--Lat 37°15'15", long 122°02'25", in Quito Grant, on right bank on downstream 

side of private road bridge, 0.5 mile southwest of Saratoga, Santa Clara County, and 

0.7 mile downstream from diversion dam.

Drainage area.--8.97 sq mi.

Records available.--October 1933 to September 1956. Prior to October 1951, published as 

Campbell Creek at Saratoga.

Gage. Water-stage recorder-and concrete control. Altitude of gage is 500 ft (from topographic map).

Average discharge.--23 years, 9.12 cfs (6,600 acre-ft per year).

Extremes.--Maximum discharge during year, 2,730 cfs Dec. 22 (gage height 6.40 ft), from 

rating curve extended above 510 cfs on basis of slope-area determination of peak flow; 

no flow at times during several months.

1933-56: Maximum discharge, that of Dec. 22, 1955; no flow during part of each 

water year, except possibly 1941, 1943, 1945.

Revisions.--The maximum discharge for the water year 1940, not previously published, 

has been determined to be 2,540 cfs Feb. 27, 1940 (gage height, 5.35 ft), and the maximum discharge for the water year 1952 has been revised to 1,240 cfs Jan. 12, 1952 

(gage height, 4.63 ft), superseding figure published in WSP 1245.

Remarks. Records good except for periods of indefinite stage-discharge relation or no 

gage-height record, which'are poor. The San Jose Water Works diverted water above station during the water year as shown below.

Revisions.--WSP 1395: Drainage area. Revised figures of discharge, in cubic feet per 

second, for high-water period in the water year 1940, superseding those published in 

WSP 901, are given herewith:

1940 

Feb. 25............ 36

26............ 132

27............ 1,260

29............ 260

Month

Water year 1939-40 ............

Cfs-days

7,319.8

Maximum

1,260

Minimum Mean

95 1

17 9

20.0

Runoff in 

acre-feet

14,520

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

0

0

ti 0

0

0

0

0

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

*0

0

0

0

0

0.4

0.01

0.8

39

Nov.

0

0

0

0

.1

.4

0

0

0

0

0

0

1.2

"76 1.3

0

1.0

0

0

0

1.0

0

0

o

o

0

o

0

*0

0

5.6

0.19

11

45

Dec.

2.6

1.2

0

0

.2

6.5

1.8

4.2

5.7

1.8

.1

.1

0

0

0

0

.2

25

337

*174

63

*541

600

*210

90

*300

80

30

28

28

*50

2,580.4

83.2

5,120

40

Jan.

55

50

*45

*40

30

30

30

40

20

a2o

a!8

al7

al6

alOO

*a!20

81

74

63

57

76

71

72

*81

78

132

144

*I20

94

77

65

53

1,969

63.5

3,910

0

Feb.

46

45

*41

37

36

32

28

27

25

22

20

20

18

18

16

*16

16

15

24

118

102

198

195

*109

96

81

69

*58

48

1,576

54.3

3,130

27

Mar.

40

*3T

32

28

27

25

24

23

*21

21

20

20

19

18

16

16

14

14

12

*12

13

12

12

12

12

12

14

14

12

12

IP.

574

18.5

1,140

231

Apr.

9.5

*9.0

8.5

12

9.0

5.8

5.3

4.8

4.4

7.6

28

16

9.5

*7.1

9.0

8.0

5.8

6.2

4.8

4.8

3.5

3.2

2.4

1.8

7.6

32

22

14

9.0

7.6

277.4

9.25

550

187

May

6.2

4.8

7.0

*8.1

4.8

4.8

4.8

9.9

10

5.8

4.8

4.4

4.0

3.5

4.0

3.2

3.5

3.5

4.8

4.0

2.8

3.2

*2.1

.7

0

0

2.8

4.0

2.1

2 . 4

5.0

131.0

4.23

260

249

June

4.8

4.5

4.0

3.5

3.0

2.5

2.0

2.0

1.5

1.5

*1.3

1.0

1.0

1.0

1.0

.5

.5

.5

.5

.5

.2

.1

0

0

*.3

0

.4

.1

.1

.2

38.5

1.28

76

207

July

0

0

0

.2

*.l

.1

0

.3

.1

.4

.3

.1

.5

0

0

.3

0

.1

.3

0

0

O

0

0

0

.1

.5

.2

.2

.2

.1

4.1

0.13

8.1

17

Aug.

0

0

O

0

0

0

0

0

o

0

0

0

4^8

0

0

0

0

0

0

0

0

o

0

0

o

*0

.1

0

.1

0

0

5.0

0.16

9.9

115

Sept.

0

0

0

0

0

o

0

0

o

0

0

0

.1

o

*o

1.2

1.1

1.6

T74

.6

*0

.3

0

0

.1

0

O

0

0

0

6.4

0.21

13

94

Calendar year 1955 : Max 600 Min 0 Mean 8.71 Ac-ft 6,310 ~ 

Water year 1955-56: Max 600 Min 0 Mean 19.6 Ac-ft 14,230 Tl,250

asurement, weather records,

* Discharge measurement or .observation of no flow made on this day.

t Diversion, in acre-feet, furnished by San Jose Water Works.

a No gage-height record; discharge estimated on basis of 1 discharge m 

and records for San Francisquito Creek at Sanford University.

Note. Stage-discharge relation indefinite Dec. 23 to Jan. 9, June 2 to Aug. 2; discharge estimated 

on basis of 8 discharge measurements, weather records, chart variations, normal recession, and records for San Francisquito Creek at Stanford University.
COYOTE CREEK BASIN 215

Coyote Creek near Madrone, Calif.

Location. Lat 37 e10'06", long 121°38'55", near southeast corner of La Laguna Seca Grant, 

on right bank 1.2 miles downstream from Anderson Dam at mouth of canyon and 1.8 miles 

northeast of Madrone, Santa Clara County.

Drainage area. 194 sq ml. 

 Records available. October 1902 to September 1912, December 1916 to September 1956.

Oage. Water-stage recorder and concrete control. Altitude of gage Is 375 ft (from topographic map). Prior to Mar. 1, 1950. staff gages and wa^er-stage recorders at various 

sites within 1.4 miles upstream at different datums.

Average discharge. 50 years' 69.3 cfs (50,170 acre-ft per year); median of yearly mean 

discharges, 55 cfs (39,800 acre-ft per year).

Extremes. Maximum discharge during year, 98 cfs May 16, 17 (gage height, 2.70 ft); no 

flow Jan. 4, 5. Apr. 2.

1902-12, 1916-56: Maximum discharge, 85,000 cfs probably Mar. 7, 1911 (record 

furnished by Duryea, Haehl & Oilman); no flow at times.

Remarks. Records good. Regulation by Coyote Reservoir beginning in 1936 (capacity,

24.560 acre-ft) and by Anderson Reservoir beginning in 1950 (capacity, 75,000 acre-ft); 

water released during summer. Diversion of 1,800 acre-ft to percolation ponds during 

year. Records of chemical analyses for the water year 1956 are given In WSP 1453.

Revisions (water years). WSP 1345: 1932, 1935(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 19

2.0 7.5

2.2 24

2.4 50

2.7 93

Dec, 20 to Sept. 30

0.97

1.1

1.2

1.3

1.4

1.5

1.6

0 

.2 

.3

.5

.7

1.1

1.5

1.7

1.8

1.9

2.0 

2.2 

2.4 

2.7

2.0

2.8

4.0

7.2

24

50

93

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

72 

72

72

74

80

ft

80

80

81

80

80

77

74

72

72

72

71

70

70

71

71

70

70

68

*65

66

62

54 

52

55

2,211

71.3

4,390

Nov.

|§

47

44

40

1

38 

36

36

35

35

35

38

40

41

38

36

25

18

18

19

18

*17

17

17

17

17

16

16

if

886

29.5

1,760

Dec.

17 

IS

15

15

15

15 

15

15

15

17

16

17

17

17

17

17

16

17

11

4.0

3.7

4.4

5.8

2.1

.9

1.0

.6

.4

.3

.3

.4

322.9

10.4

640

Jan.

0.3 

.2

.2

*0

0

.2 

1.5

1.6

1.6

1.6

1.6

1.6

1.6

1.8

2.0

1.9

1.8

1.8

1.8

2.0

1.8

1.8

1.8

1.8

111

2.0

1.8

2.0

1.7 

1.7

1*8

46.2

1.49

92

Feb.

*1.6 

1.6

1.6

1.6

1.6

1.5

TTs i!e

1.6

1.6

1.6

1.6

1.7

1.6

1.7

1.7

1.7

1.7

1.9

1.7

2.5

2!o

1.9

1.8

1.8

1.7

1.8

50.0

1.72

99

Mar.

1.7

 1.6

1.4

1.5

1.4

1.9 

3.4

Iff

3.3

3.2

3.1

3.0

3.0

2.9

3.0

2.8

2.9

3.0

2.9

2.8

2.4

2.8

2.4

2.1

1.9

2.5

2.2

.5 

.6

-* =

73.8

2.38

146

Apr.

0.1

.4

.8

1.5

6.5 

12

7.2

28

50

42

30

30

29

34

33

33

26

24

23

23

25

23

24

25

29

30

28

29 

28

674.5

22.5

1,340

May

"IT31

34

34

34 

36

36

36

42

58

58

58

66

80

90

31

68

72

76

72

65

59

60

59

58

60

62

60 

62

64

1,725

55.6

3,420

June

*62 

65

66

65

66

68 

72

71

66

66

62

59

59

65

66

68

68

68

68

70

70

71

71

72

70

65

64

64

64 

65

1,996

66.5

3,960

July

64 

62

*60

60

59

56 

56

59

59

59

59

59

59

58

62

62

62

64

62

64

64

65

56

68

65

64

64

64

66 

65

64

1,910

61.6

3,790

Aug.

64 

64

64

64

64

64 

*64

62

60

62

62

64

62

60

59

62

62

59

62

62

60

64

65

64

66

66

70

72

72 

74

74

1,993

64.3

3,950

Sept.

a74

72

72

72 

74

74

68

59

56

56

58

M

54

56

*58

60

60

60

64

65

65

65

64

64

64

62

60 

60

1,918

63.9

3,800

Calendar year 1955: Max 112 Mln 0 Mean 49.6 Ac-ft 35,890

Water year 1955-56: Max 90 Mln 0 Mean 37.7 Ao-ft 27,390

Discharge measurement or observation of no flow made on this day.
216 COYOTE CREEK BASIN

Location.--Lat 37°16'15" 

bank at "The Narrows, 

south of San Jose.

Coyote Creek near Edenvale, Calif.

, long 121°47'55", at east boundary of Santa Teresa Grant, on left 

" 1.5 miles northeast of Edenvale, Santa Clara County, and 7 miles

Drainage area. 229 sq ml.

Records available . October 1916 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 190 ft (from topographic map). Prior to Dec. 14, 1934, staff gage at site 250 ft upstream at same datum.

Extremes.--Maximum discharge during year, 1,610 cfs Dec. 23 (gage height, 5.02 ft); no flow 

for several periods.

1916-56: Maximum discharge, 10,000 cfs Feb. 10, 1922 (gage height, 12.8 ft, from 

floodmarks), from rating curve extended above 4,900 cfs parallel to 1917 curve defined 

by current-meter measurements to 8,400 cfs; no flow at times during each year.

Remarks.--Records good. Water pumped from wells along creek above station for Irrigation. 

Flow regulated by Coyote Reservoir beginning In 1936 (capacity. 24,560 acre-ft), by 

Anderson Reservoir beginning In 1950 (capacity, 75,000 acre-ft), and by detention In 

percolating reservoir 6 miles above station; water released during summer. Diversion 

between stations near Madrone and near Edenvale during year: 916 acre-ft to Alamltos 

Percolation Ponds In Guadalupe River basin, and 2,140 acre-ft-to Evergreen area.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

2.16

2.2

2.3

2.4

2.5

2.6

0 

.1 

.6 

2.2 

5.5 

12

2.7

2.8 

3.0 

3.2 

3.6 

4.2

20

31

63

112

285

705

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

3B

13

ZO

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

LS.

4.6

4.6

7.0

10

10

11

10

10

10

11

10

10 

10

8.7

8.7

6.5

4.6

8.7

10

10

10

IS

11

11

10

*11

9.3

12

12

12

289.6

9.34

574

Nov.

11

5.0

3.0

2.4

1.8

1.0

.1

0

0

0

0

0

1.2 

4.2

3.6

3.9

3.9

2.2

1.5

.7

.8

*0

0

0

0

0

0

0

0

0

46.3

1.54

92

Dec.

fl

0

0

0

0

0

0

0

0

0

1.2

1.8

1.1 

.7

1.0

1.0

.7

.4

3.6

39

38

13

67i

396

83

71

*67

34

24

18

74

1,542.5

49.8

3,060

Jan.

39

25

15

*12

12

24

14

15

12

8.1

8.1

5.5

ft! 34

52

24

18

14

22

26

18

18

17

105

68

47

38

35

26

22

783.8

25.3

1,550

Feb.

19

15

14

14

12

12

10

9.3

8.1

7.0

7.0

6.5

6.5 

7.0

6.5

5.5

5.0

5.5

176

15

10

92

44

22

16

14

11

11

414.1

14.3

821

Mar.

11

*7.'o

6.5

6.5

5.5

5.0

4.6

4.2

3.9

3.6

3.3

3.0 

2.4

2.0

1.6

1.3

1.1

1.0

1.1

1.1

1.0

.7

.4

.2

.1

0

0

0

0

0

86.8

2.80

172

Apr.

0

0

0

0

0

0

0

0

0

0

0

li

8.7 

*9.3

10

12

12

11

8.7

5..5

5.0

5.0

7.0

6.5

3.9

4.6

8.1

8.7

8.1

8.1

154.2

5.14

306

May

7.0

7.0

6.5

9.3

9.3

9.3

10

12

14

12

14

17

14 

13

12

9.3

8.7

7.0

9.3

12

12

9.3

9.3

8.7

8.7

*10

14

12

14

14

14

338.7

10.9

672

June

14

15

15

14

18

18

20

20

21

19

15

15

16 

17

19

18

17

16

17

16

17

15

15

16

16

*16

14

12

T2

13

486

16.2

964

July

12

12

13

12

11

8.7

8.7

10

11

13

10

12

11 

12

12

10

12

11

12

12

12

12

12

8.7

8.7

9.3

9.3

10

12

12

12

343.4

11.1

681

Aug.

13

13

13

13

12

*12

12

12

8.7

2.0

li

13

10 

9.3

 8.7

10

12

12

11

10

9.3

12

12

2.4

i±l

6.0

9.3

12

11

10

10

316.0

10.2

627

Sept.

11

8.7

8.7

8.7

8.7

6.0

7.0

8.1

12

12

10

8.1

10 

10

10

9.3

8.7

8.1

*7.0

6.0

7.0

7.0

7.0

6.5

7.5

8.1

7.0

7.0

7.5

7.0

249.7

8.32

495

Calendar year 1955 : Max 674 Mln o Mean 10.6 Ae-ft 7,640

Water year 1955-56 : Max 674 Mln o Mean 13.8 Ac-ft 10,010

Discharge measurement or observation of no flow made on this day.
ALAMEDA CREEK BASIN 217

Alameda Creek near Miles, Calif.

Location. --La t 37°35'14", long 121°57'35", in NW£ sec. 15, T. 4 S., R. 1 W., on right 

bank 0.3 mile downstream from railroad bridge and 1.2 miles northeast of Niles.

Drainage area. --633 sq mi.

Records available. October 1916 to September 1956.

Gage . --Water-stage recorder and concrete control. Altitude of gage is 100 ft (from topographic map). Prior to Dec, 28, 1923, water-stage recorder at site 800 ft upstream 

at different datum.

Average discharge .--39 years (1916-19, 1920-56), 86.7 cfs (62,770 acre-ft per year).

Extremes. Maximum discharge during year, 21,000 cfs Dec. 23 (gage height, 14.9 ft), from 

rating curve extended above 8,700 cfs by logarithmic plotting; no flow Nov. 10-12. 

1916-56: Maximum discharge, that of Dec. 23, 1955; no flow at times.

Remarks . Records good. Flow regulated by Calaveras Reservoir beginning in 1925 (usable 

capacity, 96,800 acre-ft, most of which is diverted for San Francisco water supply). 

Small diversions for other uses above station. Records of chemical analyses and water 

temperatures for the water year 1956 are given in WSP 1453.

£oop_eration. --Water-stage-recorder graph furnished "by city and county of San Francisco. 

Revisions (water years ) .--WSP 1345: 1952.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

1.9

2.0

2.1

2.2

2.3

2.4

2.5 

2.7 

2.9

Oct. 1 to Dec. 23

3.2 

3.5 

4.0 

4.5 

5.0 

6.0 

7.0 

9.0 

14.0

Dec. 24 to Sept. 30

22

53

112

280

560

930

1,840

3,300

7,300

18,700

0.1

.6

1.4

2.4

2.5

2.6

2.7 

2.9

Note. Same as preceding 

table above 2.9 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.0

.9

1.0

.6

.5

.5

.4

.3

.3

.4

.3

.2

.Z

.3

.3

.3

.3

.2

.2

.2

.2

.Z

.2

**.2

.2

.2

,Z

'.I

.1

10.2

0.33

20

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

2

0

0

.1

.4

.4

.9

1.8

1.7

1.6

1.4

1.4

1.2

1.2

1.4

1.4

1.7

1.4

1.3

1.2

1.1

22.5

0.75

45

Dec.

1.8

2.4

2.5

2.4

2.2

5.4

7.1

7.8

9.5

10

5.9

3.9

3.2

2.9

2.8

2.7

2.5

2.5

32

84

*27

1,050

18,200

*9,330

2,270

2,750

2,200

*1,07Q

620

404

365

38,479.5

1,241

76,320

Jan.

422

428

*315

240

5l6

818

789

1,330

818

700

623

500

428

849

2,870

*2,750

1,260

866

686

1,200

1,170

978

1,480

1,240

2,190

3,700

5,500

3,920

2,?90

1,580

1,2-20

43,476

1,402

86,230

Feb.

938

770

*637

623

554

440

598

570

345

350

320

305

295

285

276

260

252

240

236

179

91

225

i.ioo *770

693

686

560

488

470

13,156

455

26,050

Mar.

398

32B

167

170

*180

180

170

167

164

158

149

134

126

118

110

103

100

96

96

94

87

85

83

79

75

69

63

50

49

5T

53

3,953

128

7,840

Apr.

53

49

46

44

41

38

36

34

28

29

43

58

*58

67

67

80

67

53

50 40

34

32

29

28

27

27

35

22

15

13

1,243

41.4

2,460

May

12

12

12

16 *I6

12

11

10

10

10

14

15

12

9.4

8.3

7.5

6.8

6.3

6.5

7.3

7.0

6.5

6.8

6.5

6.5

7.2

6.8

6.5

6.5

5.9

5.4

285.7

9.22

567

June

5.4

6.3

6.5

6^8

6.5

6.1

6.1

*5.9

5.2

4.9

4.5

4.5

4.4

4.7

5.1

5.6

6.1

4.7

4.7

4.5

5.2

5.2

5.1

5.4

4.9

4.2

3.6

3.7

3.1

4.0

152.9

5.10

303

July

3.0

*3.7

5.4

2.7

2.7

3.4

2.6

2.4

2.7

2.8

2.3

2.1

2.1

1.9

1.9

2.2

2.3

2.0

1.8

1.5

1.8

1.7

2.0

1.8

1.4

1.2

T^3~ ]_ ]_

1.5

1.7

1.9

66.9

2.16

133

Aug.

1 6

T72

1.2

1.4

1.4

1.4

1.4

1.5

1.4

1.2

1.1

1.2

1.3

1.3

1.2

1.1

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

~. 6

.8

.8

.8

32.6

1.05

65

Sept.

0.8

.7

.5

.4

.4

.4

.5

.5

.5

.4

.2

.6

.8

.6

.5

.4

.3

.2 *.6

.7

.5

.4

.3

.5

.8

.6

.8

1.2

.7

.5

16.3

0.54

32

Calendar year 1955: Max 18,200 Min 0 Mean 113 Ac-ft 81,750

Water year 1955-56: Max 18,200 Min 0 Mean 276 Ac-ft 200,100

Discharge measurement made on this day. 

* Field estimate made on this day.
218 SAN LORENZO CREEK BASIN 

San Lorenzo Creek at Hayward, Calif.

Location. Lat 37°41', long 122°04 I , in San Lorenzo Grant, on right bank at bridge on

B Street, just outside city limits of Hayward, Alameda County, 0.5 mile downstream from 

Crow Creek.

Drainage area. 38.0 sq mi.

Records available. January to September 1940, October 1946 to September 1956.

Gage . Water-stage recorder and concrete control {control ineffective since 1952, due to 

gravel fill). Datum of gage is 133.16 ft above mean sea level, datum of 1929. January 

to September 1940 wire-weight gage on bridge at present site and datum.

Average discharge. 10 years (1946-56), 14.2 ofs (10,280 acre-ft per year).

Extremes. Maximum discharge during year, 4,790 cfs Dec. 22 (gage height, 20.82 ft, from 

floodmarks), from rating curve extended above 1,800 cfs on basis of slope-area determination of peak flow; no flow at times during several months.

1940, 1946-56: Maximum discharge, that of Dec. 22, 1955; no flow during part of 

each year.

Flood of Jan. 24, 1942, reached a stage of 15.7 ft, from floodmarks (discharge, about 

4,200 cfs).

Remarks. Records good except those for periods of no gage-height record, which are fair. 

A few very small diversions above station.

Revisions (water years). WSP 1345: 1940(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 5-21)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

2.3

2.4

2.5

2.6

2.7

2.8

.1

.4

1.2

3.3

6.7

3.0 

3.5 

4.0 

5.0 

8.0 

14.0

17

55

108

254

890

2,580

3.6

3.7

3.8

3.9

.2 

1.0 

3.0

4.0 

4.5 

5.0 

8.0

7.0

47

110

860

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

0

0

0

0

0

0 

0

0

0

0

0

0

1.8 0~

0

1.5

0

0

0

1.8

0

*0

1.3

.6

.6

.4

0

0

0

0

8.0

0.27

16

Dec.

26

0

0

0

1.2

*9.5 

.4

3.9

3.9

.4

.1

.1

.1

.1

.1

.1

.2

4.2

64

56

*15

1,320

«a2j500

a430

a!50

*622

*218

*a90

a65

63

55

5,698.3

184

11,300

Jan.

49

41

384~5~

59

*41 

195

82

59

68

54

47

43

448

*779

350

134

98

78

157

87

106

95

80

416

417

418

212

138

101

81

5,016

162

9,950

Feb.

65

58

54

48

43

42 

45

43

39

37

35

33

32

30

27

25

26

24

2T

37

26

125 118-

49

55

46

40

39

46

1,313

45.3

2,600

Mar.

3735-

34

32

32

*29 

26

25

24

23

23

21

21

21

19

19

19

19

18

18

18

17

16

16

15

14

14

14

13

*12_

T2

656

21.2

1,300

Apr.

' 12

11

10

8 2

9 4

8 2 

8 2

8 8

9 4

9 4

19

TT *n

12

10

10

8.8

8.8

8.8

7.6

7.6

7.6

8.2

8.2

7.6

13

19

11

9.4

8.8

302

10.1

599

May

8.2

7.6

*12

18

TT

10 

10

9.4

11

7.6

7.6

7.0

6.0

5.2

4.4

4.4

3.6

3.3

4.0

4.0

4.0

3.6

4.0

4.4

3.3

3.0

3.0

2.8

2.5

2~~5 2.2

189.6

6.12

376

June

2.2

2.2

2.8

3.0

3.0

B

*z'.a

2.2

2.5

2.5

2.5

2.2

2.5

2.2

1.8

1.6

1.8

1.8

1.6

1.3

1.2

1.2

1.4

1.4

1.0

.8

| a.8

/ (*)

58.2

1.94

115

July

1.2

TTT

1.3

1.4

1.3 

1.4

1.2

1.2

1.2

1.0

.7

.7

1.0

1.4

1.4

1.4

1.4

1.3

.9

.6

.6

.6

.6

.5

-4

74

.4

.4

.4

.4

29.5

0.95

59

Aug.

0.4

*.5

.6

.7

1.0

*!§

.4

.3

.2

.1

.1

.2

.4

.2

.2

.2

.2

.1

.1

.2

.2

.1

.1

.1

0

0

0

0

0

0

8.6

0.28

17

Sept.

0

.1

.1

.1

0

.1 

.1

0

0

0

0

0

0

0

0

0

0

0

*.6

.2

.2

.2

.1

.2

.6

.8

.9

.9

1.3

3_.0

9.5

0.32

19

Calendar year 1955: Max 2,500 Min 0 Mean 19.0 Ac-ft 13,720

Water year 1955-56: Max 2,500 Min 0 Mean 36.3 Ac-ft 26,350

Peak discharge (base, 350 cfs). Df

1,390 cfs (9.97 ft); Jan. 7 (6 p.m.) 

Jan. 25 (6:30 a.m.) 1,300 cfs (9.66 i

c. 22 (about 12 p.m.) 4,790 cfs (20.82 ft); Dec. 26 (10 a.m.) 

1.260 cfs (9.50 ft); Jan. 15 (4:30 p.m.) 1,850 cfs (11.57 ft); 

't)j Jan. 27 (3:30 p.m.) 608 cfs (7.03 ft); Feb. 22 (8 p.m.)

730 cs cfs (7.50 . ft)..

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of 3 discharge measurements and records for 

San Francisquito Creek at Stanford University.
PACHECO CREEK BASIN 219

San Ramon Creek at San Ramon, Calif.

Location.--Lat 37°46'20", long 121°59'40", in sec. 8, T. 2 S., R. 1 W., on right bank 

0.2 mile downstream from Bollinger Creek and 1.0 mile southwest of San Ramon.

Drainage area. 5.89 sq mi

Records available. October 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 530 ft (from topographic map).

Extremes.--Maximum discharge during year, 1,350 cfs Dec. 22 (gage height, 14.2 ft, from 

floodmarks), from rating curve extended above 150 cfs on basis of computation of peak 

flow through culvert; no flow Oct. 1 to Dec. 17, July 22-25.

1952-56: Maximum discharge, that of Dec. 22, 1955; no flow several months each 

year.

Revisions. - -Figures of maximum discharge for the water years 1953 and 1954 have been 

revised to 212 cfs Dec. 7, 1952 (gage height, 3.72 ft) and 187 cfs Feb. 17, 1954 (gage 

height, 3.47 ft), superseding those published in WSP 1285 and 1345, respectively.

Remarks. Records fair. No regulation or diversion.

Revisions . Figures of peak discharge for the water years 1953-54 have been revised as 

shown below, superseding those published in WSP 1285 and 1345.

Revised peak discharge. 1952-o3: Dec. 7 (4 a.m.) 212 cfs (3.72 ft); Jan. 7 

(8 a.m. ) 149 ci's (3.09 ft); Jan. 20 (12:30 p.m.) 106 cfs (2.66 ft).

1953-54: Jan. 17 (6:30 a.m.) Ill cfs 2.71 ft); Feb. 14 (3 a.m.) 157 cfs (3.17 ft); 

Feb. 17 (1:30 p.m.) 187 cfs (3.47 ft).

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

IB cubic feet per second) 

(Shifting-control method used Dec. 22 to Jan. 7, July 25 to Aug. 2)

Oct. 1 to Apr. 18 Apr. 19 to Sept. 30

0.6 

.7 

.8 

.9

1.0

1.1

1.2

.5 

1.3 

2.4 

3.9 

5.6 

7.5

1.4 

1.6 

1.8 

2.0 

2.5 

3.0 

5.0

20

31

46

90

140

340

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

.2 

.5 

1.1 

2.0 

3.8 

8.0

Discharge, in cubic fe*t per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

6.8

40

24

14

*327 

2T5

*52

20

*61

35

*15

14

13 

12

843.8

27.2

1,670

Jan.

12

9.8

8.9

11

9.5

*7.7 3B~

17

14

17

14

13

13

64

*94

43

28

24

21

34

21

36 

26

24

86

89

69

45

30

20 

16

954.9

30.8

1,890

Feb.

15

*14

13

12

11

10

9.5

8.9

8.5

8.1

7.7

7.3

6.9

6.7

6.4

6.0

6.2

5.8

9.6

12

7.3

39 

27

13

15

11

10

10

10

326.9

11.3

648

Mar.

8.9

S75

7.9

7.7

7.7

*7.1

6.9

6.9

6.7

6.6

6.0

5.6

5.6

5.4

5.3

5.1

5.1

4.9

4.9

4.9

4.8

4.6 

4.6

4.4

4.2

4.1

3.9

*379~

3.9

3.9

4.2

174.0

5.61

345

Apr.

4.1

3.5

3.5

3.5

3.5

3

3

3

3

3

5.6

6

*4

3.5

4

3.5

3

*2.5

2.3

2.2

2.0

It!

2.0

1.9

11

T.O

3.3

2.8

2.4

106.0

3.53

210

Calendar year 1955: Max 327 Min 0 Mean 2.87

May

2.2

2.0

*3.1

5.6

276

2.4

2.0

2.3

1.9

1.7

1.6

1.5

1.3

1.0

1.0

.9

.9

.879-

.9

.9

.9 

1.0

1.0

.9

.8

.9

.9

.9

.9

.9

46.6

1.50

92

June

~T5" 0.9

.9

.9

.9

.9

.9

*.9

.9

.8

.7

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

.5 

*.5

.5

.4

.4

.272"

.2

.4

19.3

0.64

38

July

0.4

!i

.4

.3

.3

.2

.2

.2

.4

.3

.4

.4

.4

.4

.3

.3

.2

.1

.1

.1

00~

0

0

.1

.1

.1

.2

.2

.2

7.1

0.23

14

Aug.

0.2

*.3

.4

.5

/7

.5

.4

.4

.2

j_l

.1

.2

.3

.2

.1

.2

.2

.2

.2

.2

.2

.2

.2

 *

7.8

0.25

15

Sept.

0.2

7^

.2

.2

.3

.2

.2

*.3

.3

.4

73 

.2

.2

.2

.3

.4

.4

.3

.3

7.1

0.24

14

Ac-ft 2,070

Water year 1955-56: Max 327 Mln 0 Mean 6.81 Ac-ft 4,940

Peak discharge (base, 100 efs).--Dee. 22 (about 11 p.m.) 1,350 cfs (14.2 ft)j Dec. 26 (8:30 a.m.) 

173 cfs (3.83 ft); Jan. 7 (5 p.m.) 228 cfs (3.88 ft); Jan. -15 (3 p.m.) 218 cfs (3.78 ft); Jan. 25 

(4:30 a.m.) 270 cfs (4.30 ft); Feb. 22 (7 p.m.) 216 cfs (3.76 ft).

* Discharge measurement or observation of no flow made on this day.

Note. Doubtful or no gage-height record Dec. 25, 27, 28, Jan. 28 to Feb. 1, Apr. 2-10, 12-18, 

Aug. 23 to Sept. 30; discharge estimated on basis of 4 discharge measurements and records for station at Walnut Creek.
230 PACHECO CREEK BASIN 

San Ramon Creek at Walnut Creek, Calif.

Location. Lat 37°53'04", long 122°03'00", on boundary between Arroyo de las Nueces y Bolbones and San Ramon Grants, on left bank 0.3 mile downstream from small tributary, 

1.1 miles south of town of Walnut Creek, Contra Costa County, and 1.2 miles upstream 

from confluence with Las Trampas Creek.

Drainage area.--50.7 sq mi.

Records available.--October 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 170 ft (from topographic map).

Extremes.--Maximum discharge during year, 6,890 cfs Dec. 23 (gage height, 14.55 ft), from 

rating curve extended above 570 cfs on basis of slope-area determination of peak flow; 

no flow Oct. 1 to Nov. 13.

1952-56: Maximum discharge, that of Dec. 23, 1955; no flow during several months in 

1954-55.

Remarks. Records good. Pumping for irrigation above station during periods of low flow. 

Revisions (water years). WSP 1395: 1953(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In

cubic feet per second) 

(Shifting-control method used June 16-19, July 29 to Aug. 10, Sept. 16-30)

Oct. 1 to July 9

0.4 

.5 

.6 

.8 

.9

1.0

1.1

.2 

.4 

.6 

.9 

1.2

1.3 

1.5 

1.7 

2.0 

2.3 

2.6 

3.0

2.3

4.2

7.0

13

23

40

70

3.5 

4.0 

4.5 

5.0 

6.0 

7.0 

9.0

124

210

340

510

990

1,540

2,720

July 9 to Sept. 3O 

0.7

.9 

1.0

0.4 

.7 

1.2

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

A7

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

( )

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

.5

1.1

1.0

.9

.6

.6

.6

*.6

.6

.7 

.8

.8

.7

.7

.7

.7

.6

12.2

0.41

24

Dec.

0.8

1.1

.8

.6

.6

*.8

1.5

1.1

2.2

1.2

.8

.7

.6

.6

.7

.7

.7

1.9

37

61

24

1,290

»2, 670 

*230

55

*613

90

43

29

23

23

5,205.4

168

10,320

Jan.

20

17

1416"

*41

20

235

91

32

65

33

23

19

319

613

155

70

56

45

180

64

105

110 

73

740

639

450

170

90

70

59

4,634

149

9,190

Feb.

*47

41

38

36

33

29

26

24

22

21

21

20

18

17

17

15

15

15

26

70

26

212

W 

42

55

40

31

28

36

1,213

41.8

2,410

Mar.

26

24

22

21

22

*18

16

16

16

15

14

13

13

13

13

13

12

12

12

11

11

11

10 

10

10

9.8

*9.6

9.6

9.5 97B"

10

432.0

13.9

857

Apr.

9.6

8.9

8.9

8.7

8.4

8.0

7.8

8.0

8.2

7.8

*16

12

7.7

10

9.3

9.1

7.7

7.8

7.7

7.3

7.2

7.0

7.0 

6.4

5.2

7.6

22

12

10

9.8

273.1

9.10

542

May

7.7

6.8

*6.2

8.5

19.

8.2

8.2

7.0

6.4

6.4

5.8

6.2

7.0

6.4

6.1

4.0

*3.5

3.3

3.6

4.0

5.4

5.1

5.2 

5.6

3.9

3.1

2.6

370

3.1

3.0

3.1

168.4

5.43

334

June

3.5

3.2

4.3

5.0

4.7

3.9

4.3

4.3

3.2

2.9

2.8

2.5

2.1

1.6

1.5

1.5

1.5

1.6

1.6

1.6

1.8

1.6

*1.4 

T76

1.6

1.6

1.8

1.9

1.6

1.4

73.9

2.46

147

July

1.6

2.0

T79

1.8

1.7

1.6

1.8

1.8

1.5

1.5

1.4

1.3 *1.3

1.2

1.4

1.6

1.6

1.4

1.3

1.3

1.2

1.2

1.2 

1.3

1.3

1.2

1.1

1.1

1.1

.7

.7

43.1

1.39

85

Aug.

0.7

*.6

.6

.7

.6

.6

.6

.6

.5

75

.5

.6

.6

.7

.7

.7

.8

78

.7

.6

.7

.8

.8

.7

.7

.7

.7

.6

.6

.6

. 6

20.2

0.65

40

Sept.

0.6

.6

.6

.6

.5

.6

.5

.5

.6

.6

.6

.5

.4

.6

.6

.9

.7

*.8

.9

1.1

1 ? rl

.6 

.6

.9

1.0

1.1

1.1

.8

.9

21.8

0.73

43

Calendar year 1955: Max 2,670 Mln 0 Mean 15.7 Ac-ft 11,400

Water year 1955-56: Max 2, ,670 Mln 0 Mean 33.1 Ac-ft 23,990

Peak discharge (base, 500 cfs). Dec. 23 (l a.m.) 6,890 cfs (14.55 ft); Dec. 26 (11 a.m.) 1,370 

fs (6.70 ft); Jan. 7 {8 p.m.) 1,180 cfs (6.35 ft); Jan. 15 (6 p.m.) 1,420 cfs (6.80 ft); Jan. 20 

(8:30 a.m.) 530 cfs (5.05 ft); Jan. 25 (7:30 a.m.) 2,630 cfs (8.85 ft); Jan. 27 (5 p.m.) 618 cfs 

(5.25 ft); Feb. 22 (10:30 p.m.) 1,070 cfs (6.16 ft).

* Discharge measurement or observation of no flow made on this day.
PACHECO CREEK BASIN 

Walnut Creek at Walnut Creek, Calif.

221

Location. Lat 37°53'56", long 122°03'31", on boundary between Arroyo de las Nueces y Bolbones and Canada de Hambre Grants, on downstream side of left abutment of highway 

bridge at town of Walnut Creek, Contra Costa County, 0.1 mile downstream from confluence of San Ramon and Las Trampas Creeks.

Drainage area. 78.1 sq ml, of which 1.2 sq ml Is In Lafayette Reservoir and Is noncontributing.

Records available. October 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 130 ft (from topographic map).

Extremes. Maximum discharge during year, 11,000 cfs Dec. 23 (gage height, 23.22 ft), from 

rating curve extended above 2,400 cfs on basis of records for upstream stations; minimum, 0.1 cfs Oct. 1-18, 22, 23, Nov. 6.

1952-56: Maximum discharge, that of Dec. 23, 1955; no flow July 29 to Nov. 7, 1954.

Remarks.--Records good. Lafayette Reservoir stores runoff from 1.2 sq ml and Is noncontributing. Some small diversions for Irrigation above station.

Revisions (water years).--WSP 1395: 1953.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Apr. 27 to Aug. 14)

1.9

2.0 1.2 

3.0

2.8 

3.0 

3.5 

4.0

107

200

 4.5

5.0

6.0

8.0

10.0

15.0

335

500

925

1,930

3,030

5,870

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

7?

.2

.1

.1 

**.2

.2

.2

.2

.2

.2

.2 

.2

4.2

0.14

8.3

Nov.

0.2

.2

.2

.2

.2

.1

7F

.2

.2

.2

.2

.2

1.7

7.0

373

2.0

4.9

1.4

1.1

1.1

*2.0

1.2

1.6 

2.0

1.7

1.4

1.3

1.8

2.4

1.7

41.9

1.40

83

Dec.

5.5

3.1

2.2

1.7

T78

*8.7

4.0

5.0

7.7

3.2

2.5

2.3

2.2

2.4

2.5

2.4

2.8

31

406

193

78

»2,870

5.510 

*555

173

1,220

*226

104

67

58

58

11,609.0

374

23,030

Jan.

61

43

32

57

*106

45

504

188

89

137

84

72

65

531

1,140

310

133

113

88

318

118

192

193 

138

1,270

914

645

324

193

154

126

8,383

270

16,630

Feb.

*106

91

86

81

77

70

64

60

54

52

51

49

47

45

44

41

40

40

203

294

96

655

35T 

117

164

100

73

70

84

3,305

114

6,560

Mar.

60

56

52

50

50

*44

42

41

41

40

40

38

37

37

35

34

34

34

34

32

28

24

21 

20

21

*19

19

21

20

18 

TJT J.O

1,060

34.2

2,100

Apr.

17

16

14

14

14

14

12

12

12

12

*39

TT

12

14

12

12

10

10

9.3

9.3

9.6

9.0

8.6 

8.6

6.8

17

30

16

14

14

415.2

13.8

824

May

12

12

*19

24

17

15

16

12

12

11

10

10

11

10

11

9.3

*7.1

7.4

6.8

7.4

7.7

7.4

7.4 

8.6

8.0

7.4

7.4

7.7

8.3

7.4

7.7

325.0

10.5

645

June

8.3

7.1

8.0

7.4

8.3

7.4

7.1

9.3

676

6.3

6.3

6.3

5.6

5.8

5.3

4.9

5.3

4.7

4.7

4.3

4.5

3.8

*3.6 

3.4

3.6

3.5

3.4

3.4

3.1

2.9

164.2

5.47

326

July

2.9

3.4

3.4

2.9

3.1

2.9

3.1

2.8

3.1

3.0

3.0

2.7

2.9

2.7

2.8

2.8

3.1

2.8

3.0

2.5

2.6

2.3

2.3

1.8

57?

2.0

2.3

2.2

2.9

2.2

2 3

84.0

2.71

167

Aug.

2.2

2.5

2.8

*3.0

275

2.2

2.4

2.4

1.9

1.8

1.9

1.9

1.9

1.8

2.0

1.8

2.2

1.9

2.0

1.8

1.9

1.8

2.0 

1.6

1.8

1.8

1.4

T78

1.5

1.4

1.7

61.6

1.99

122

Sept.

1.4

1.6

1.2

1.2

1.4

1.1

1.4

1.1

1.1

1.4

1.1

1.3

1.0

1.1

1.5

1.2

1.2

*1. 1

4.3

1.6

1.8

1.0 

.9

270

2.0

2.7

2.2

2.1

2.2

47.4

1.58

94

Calendar year 1955: Max 5,510 Mln 0.1 Mean 35.7 Ac-ft 25,910

Water year 1955-56: Max 5,510 Mln 0.1 Mean 69.7 Ac-ff 50,590

ft) 2,740 cfs (9.48'ft)t

* Discharge measurement made on this day

** Field estimate made on this day.
222 PACHECO CREEK BASIN

Galindo Creek at Concord, Calif.

Location. Lat 37°S8'00", long 122°01'30", in Monte Del Diablo Grant, on right bank just 

off Cowe11 Road, 0.2 mile southeast of Concord, Contra Costa County, and 1.2 miles upstream from mouth.

Drainage area. 6.16 sq mi.

Records available. June 1954 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 80 ft (from topographic map).

Extremes.--Maximum discharge during year, 260 cfs Dec. 23 (gage height, 3.45 ft), from 

rating curve extended above 110 cfs by logarithmic plotting; minimum, 0.1 cfs many days 

in October and November, July 15.

1954-56: Maximum discharge, that of Dec. 23, 1955; no flow Oct. 22, 26, 27, 1954, 

Sept. 1, 8, 1955.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Some release from Contra Costa Canal (see p. 371), Central Valley project, into basin 

above station.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

.03 0 1.6 11

.1 .2 1.7 16

.2 .9 1.9 36

.3 2.0 2.2 73

.4 4.1 2.6 128

.5 7.0

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0.2

.1

7T

.2

.4

.1

.1

.2

.1

.2

.6

75

.2

.2

.4

.2

.3

(**)

.6

.1

.1

.1

.1

.1

.1

7.4

0.24

15

Nov.

~7T 0.1

.1

.4

.5

.1

.1

.1

.1

.1

.1

.6

.7

.6

1.1

\r:j (**).1.3

.2

.1

.1

.1

.1

.1

.2

10.3

0.34

20

Dec.

0.9

.3

.2

7?

.4

*.2

.3

1.1

.6

.2

.2

.2

.2

.2

.2

.2

.3

1.1

7.5

3.0

1.5

39

125

3.6

54

8.4

3.8

2.4

2.7

2 5

273.4

8.82

542

Jan.

2.0

1.5

T7B- 1.2

*2.0

1.3

12

4.6

3.0

5.4

2.7

1.9

1.9

32

*55

14

6.3

6.0

4.9

25

6.7

8.4

6.3

6.0

40

37

26

9.8

7.3

6.3

5.7

343.7

11.1

682

Feb.

4.6

*4.1

4.1

3.8

3.8

3.6

3.4

4.0

3.5

3.0

3.0

2.8

2.7

2.6

3.5

3.5

3.0

2.5

4.5

9.0

4.5

20

7.0

4.5

2.5

2.3

2.2

2.0

47(5 -

124.0

4.28

246

Mar.

3.0

277

2.3

1.9

*1.8

1.5

1.4

1.4

1.4

1.4

1.4

1.3

1.3

1.3

1.1

1.1

1.1

1.1

1.0

1.3

1.4

 1.8

.9

.7

.7

.6

.6

.5

.5

.4

75

39.4

1.27

78

Apr.

0.6

.5

.9

.9

.4

.3

.3

.3

.2

iTo

1.5

*.6

.6

.9

.6

.6

.5

.3

.3

.3

.9

.5

.3

1.7

.4

1.0

.7

.4

.3

.3

18.1

0.60

36

May

0.3

*.6

.5

 6

 6

 4

.3

.4

.4

JJL

.3

.3

.4

.2

72

.3

*.2

.3

.2

.4

.3

.3

.6

.4

.4

.4

.4

.7

.8

.4

.5

12.9

0.42

26

June

0.6

1.0

.7

.6

.6

1.3

.8

.2

170

1.1

.6

.7

1.0

.9

.8

.8

.8

.8

.6

1.0

2.0

T7o

 1.5

.9

1.1

1.1

.6

.7

.6

.6

26.0

0,87

52

July

0.6

.9

.8

1.0

.9

1.2

1.1

.7

.9

1.5

.6

.5

.6

.5

.2

.6

.4

.6

.6

.6

.3

.2

.2

.3

.6

.6

.4

.6

1.0

1.0

19.9

0.64

39

Aug.

0.2

.4

.4

.4

1.1

.7

.8

.9

~1.3

.6

.4

.4

.6

.6

>. .5

.4

17.7

0.57

35

Sept.

0.4

.4

.3

(*)

.2

7.1

0.24

14

Calendar year 1955: Max 125 Min 0 Mean 1.2O Ao-ft 872

Water year 1955-56: Max 125 Mln 0.1 Mean 2.46 Ao-ft 1.78O

Peak discharge (base. 20 cfs).--Dec. 23 (1:30 p.m.) 260 cfs (3.45 ft)j Dec. 26 (10 a.m.) 164 cfs 

(2.85 ft); JanT 7 (6:30 p.m.) 74 ofs (2.21 ft); Jan. 15 (5 p.m.) 122 cfs (2.56 ft); Jan. 20 (7 a.m.) 

92 cfs (2.34 ft); Jan. 25 (7:30 a.m.) 107 cfs (2.45 ft); Feb. 22 (time and discharge unknown).

* Discharge measurement made on this day.

** Field estimate made on this day.

Mote.--No gage-height record Oct. 17-24, Nov. 16-21, Feb. 4 to Mar. 5, Apr. 10, 11, June 21-23, 

Aug. 15 to Sept. 30; discharge estimated on basis of records for nearby streams.
PACHECO CHEEK BASIN 223

Pine Creek at Concord, Calif.

Location. Lat 37°58'13", long 122°02'42", in Monte del Diablo Grant, on right bank at 

Concord, Contra Costa County, Just upstream from Market Street Bridge, 0.2 mile downstream from small tributary and 0.8 mile upstream from mouth.

Drainage area. 27.0 sq mi.

Records available. October 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 30 ft (from topographic map).

Extremes. Maximum discharge during year, 982 cfs Dec. 23 (gage height, 9.85 ft), from 

rating curve extended above 80 cfs on basis of slope-area determination of peak flow; 

no flow at times during several months.

1952-56: Maximum discharge, that of Dec. 23, 1955; no flow during several months 

each year.

Remarks. Records fair. No storage; some release from Ygnacio and Contra Costa Canals, 

Central Valley project, into basin for irrigation above station.

Revisions (water years). WSP 1395: Drainage area, 1953.

Rating table, water year 1955-56 (gage height, In feet,

and discharge, in cubic feet per second)

(Shifting-control method used Dec. 24-26. Jan. 26 to

Feb. 23, June 1 to Sept. 30)

2.6

2.7

2.8

2.9

3.0 

3.2

0

.1

.2

.7

1.8

5.9

3.4 

3.6 

4.0 

4.5 

5.0 

9.0

12

19

41

84

163

837

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0o"

0

0

.3

0

0

0

0

0

.4

7T

0

0

.1

0

0

.2

0

0

0

0

0

«0

.3

0

0

0

0

0 

0

1.7

0.05

3.4

Nov.

5"0

0

0

.2

0

0

0

0

0

0

.1

.2

.1

.3

.6

74

.1

0

0

*0

0

.1

0

0

0

0

0

0

0

2.1

0.07

4.2

Dec.

1.0

.1

5"0

.2

*.8

!l

1.6

.4

.1

0

0

0

0

0

0

.1

2.6

16

12

7.5

194

*722

*§?

39

178

34

20

15

14

15

1,371.5

44.2

2,720

Jan.

12

11

9.7

*9.7

 11

28"^ 9.1

20

13

17

13

11

10

79

169

50

24

20

17

56

24

26

23

22

154

132

98

50

38

33

30

1,?21.5

39! 4

2,420

Feb.

31

*24

24

22

22

21

20

21

19

18

18

17

17

17

19

19

17

16

20

31

20

57

58

14

14

12

T5" 10

11

599

20.7

1,190

Mar.

~S.S 10

8.5

8.2

 8.5

7.7

7.5

7.5

7.2

6.9

6.7

5.9

6.2

5.9

5.0

4.8

4. 6

4.6

4.6

5.0

4.6

4.1

4.4

4.1

3.3

3.1

2.7

*2.5

2.1

1.8 1 5"

1 a

168.8

5.45

335

Apr.

2.1

1.6

1.9

1.2

.7.

75" >4

.5

3.4

3.5

*2~79~ 4.4

1.4

3.1

2.3

1.9

 1.1

.8

2.1

.6

1.4

.7

.4

2.2

1.2

3.7

3.7

.7

.4

.4

51.2

1.71

102

May

0.3

*.8

1.7

2.6

1.1

.5

.4

.3

.3

1.3

.2

3.3

 3

.1

.1

.1

*05"

0

0

0

0

.1

0

0

.1

0

.1

1.9

1.5

.9

18.0

0.58

36

June

1.4

2.7

2.9

2.2

1.0

3.1

2.2

0

T.2

1.4

.9

.4

.6

.4

.4

.3

.3

.3

.4

5.6

1.3

.a

 1.8

.5

.5

1.6

.2

.1

.2

.6

35.3

1.18

70

July

0.6

1.1

.5

.3

.3

1.0

.2

.1

.2

1.2

.2

0

.1

.1

0

0

0

2

2

1

1

1

0

0

0

.1

.2

.1

.1

.3

.4

7.8

0.25

15

Aug.

*0~0

0

0

0

0

0

.2

7T

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.3

0.01

0.6

Sept.

0"0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

o .5

0

0

0

0

0

0

0

0

0

0

0.5

0.02

1.0

Calendar year 1955: Max 722 Min 0 Mean 4.35 Ac-ft 3,150

Water year 1955-56: Max 722 Min 0 Mean 9.50 Ac-ft 6,900
224 PACHECO CREEK BASIN

Grayson Creek near Hookston, Calif.

Location. La t 37°57'05", long 122 "05'05", in Las Juntas Grant, 0.3 mile upstream from 

unnamed tributary and 1.9 miles northwest of Hookston, Contra Costa County.

Drainage area.--1.94 sq mi.

Records available. June 1954 to September 1956.

I. Water-stage recorder. Altitude of gage is 80 ft (from topographic map).

Extremes.--Maximum discharge during year, 416 cfs Dec. 23 (gage height, 4.72 ft), from 

rating curve extended above 46 cfs on basis of slope-area determination of peak flow; 

no flow for several months.

1954-56: Maximum discharge, that of Dec 23, 1955; no flow for several months each 

year.

Remarks. Records fair. No storage or diversion.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, In cubic feet per second)

1.02

1.1

1.2

1.3

1.4

0

.4 

1.3 

3.5 

8.5

1.5 

1.7 

2.0 

2.5

18

41

76

138

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

 13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

12

4.5

3.1

70

~*5.0

.9

25

4.3

1.5

.7

.5

2.0

249.5

8.05

495

Jan.

0.6

.4

.3

*.3

.5

lo1*"2

2.3

1.1

2.2

1.2

.9

.8

14

*15

4.7

1.6

1.8

1.2

6.6

1.3

1.8

1.3

1.9

15

10

3.5

2.2

1.8

1.6

122.1

3.94

242

Feb.

n.s

1.0

1.0

.9

.8

.7

.7

.6

.6

.6

.5

.5

.5

77

.4

.4

.4

2.8

4.0

>7

~~3.0 10

l!2

1.1

1.0

1.0

1.5

1.3

39.3

1.36

78

Mar.

0.9

.8

.8

.9

.8

.7

.7

.7

.7

.7

.6

.6

.6

.5

.6

.6

.5

.5

.5

.5

*.5

.5

.5

.4

.4

.4

.4

.4

.4

19.0

0.61

38

Apr.

0.4

.3

.3

.3

.3

.3

.2

72

.2

.3

*.6

73

.2

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

,Z

.2

.2

.2

.2

7.5

0.25

15

May

0.2

**. 2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

0

0

0

*0

0 '.i

.1

0

.1.1

0

0

0

0

0

0

0

2.9

0.09

5.8

June July

(*)

Aug.

(*)

0

0

0

0

0

0

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955 : Max 120 Mln 0 Mean 0.72 Ac-ft 523 

Water Water year year 1955-52 1955-56 : ' Max v>ax 120 120 Mln Mln 0 0______Mean Mean 1.20 1.20 Ac-ft Ae-ft 873 875___________________

, Peak discharge fbase. 20 gfsi . nee. 19 (l p.m.) 62 cfs (1.88 ft); Dec. 23 (10 a.m.) 416 cfs 

(4.72 ft}; Dec. 26 (1 p.m.) 158 cfs (2.66 ft); Jan. 7 (4:30 p.m.) 114 cfs (2.31 ft)j Jan. 14 (5 p.m. 

54 cfs (1.81 ft); Jan. 20 (5 a.m.) 24 cfs (1.56 ft); Jan. 26 (6 a.m.) 79 cfs (2.02 ft); Feb. 22 

(time unknown) 147 cfs (2.57 ft).

* Discharge measurement or observation of no flow made on this day.

Note.--No gage-height record Dec. 23, 24, Dec. 28 to Jan. 4, Feb. 20 to Mar. 5; discharge estimated 

on basis of 4 discharge measurements, weather records, and records for nearby streams.
PACHECO CREEK BASIN 

Grayson Creek near Pacheco, Calif.

225

Location. Lat 37°57'25", long 122°04'20", in Las Juntas Grant, on downstream side of 

bridge, 0.6 mile downstream from unnamed tributary and 1.8 miles south of Pacheco, 

Contra Costa County.

Drainage area. 4.35 sq mi.

Records available. June 1954 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 40 ft (from topographic map).

Extremes. Maximum discharge during year, 604 cfs Dec. 23 (gage height, 10.24 ft, from 

floodmarks), from rating curve extended above 110 cfs by logarithmic plotting; no flow 

many days during year.

1954-56: Maximum discharge, that of Dec. 23, 1955; no flow many days each year.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Periodic releases from cleaning Contra Costa Canal (see p. 371 ), Central Valley 

project, into basin above station. Waste water from filtration plant released almost 

daily into channel above gage.

Rating table, water year 1955-56 (gage height, in 

and discharge, in cubic feet per second)

1.8 

2.0

2.0 

3.5

2.5 

3.0 

3.5 

4.0 

7.0

58

83

295

Discharge, in oubio feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.1

.2

# 0

~T.6

.5

0

.3

.2

0

.2

.1

.1

.2

0

.3

.1

.2

0

.2

.1

.1

.1

**.!

0

O

0

0

0

.1

0

15.8

0.51

31

Nov.

0

0

0

0

.2

O

.3

0

1.5

.7

.6

.6

.6

.8

*.5

.7

.8

.6

.7

.6

.6

.5

.9

.7

12.5

0.42

25

Dec.

0.6

.4

.5

.4

*.6

1.0

2.4

.5

.2

.1

.1

.1

.2

.1

.3

.2

1.0

21

11

6.4

190

251

*12

2.4

73

7.9

2.5

1.4

1.5

592.7

,19.1

1,180

Jan.

2.5

1.7

.8

*1.4

.9

29

6.8

2.2

6.5

2.4

1.6

1.3

33

*52

9.9

4.3

4.4

2.8

19

4.6

6.5

4.1

5.2

50

45

23

9.5

5.1

3.1

2.4

342.8

11.1

680

Feb.

*1.7

1.6

1.3

1.3

.9

.7

.7

.5

.5

.5

.5

.5

.4

.5

.4

.3

.3

.5

6.4

3.0

30

5.0

3.0

2.0

1.8

1.5

4.0

5.0

75.9

2.62

151

Mar.

3^0

2.5

2.0

1.5

*1.3 

1.2

1.1

1.1

1.1

1.0

1.0

1.0

.9

.9

1

1

V n

1 1.0

*1.5

.6

.4

.4

.4

.4

.5

.4

.4

.4

.4

30.4

0.98

60

Apr.

0.4

.4

.3

.4 IP.' 

.6

.4

.6

.4

.6

*.9

1 . Q

.5

} 

29.0

0.97

58

May

0.5

*.4

.4

.4 

.2

.2

.3

.1

.1

.1

.1

.2

.1

.2

.1

.2

*.l

.2

1.1

5.8

.4

.1

.3

.2

.3

.1

.6

.1

.2

0

.1

11.2

0.36

22

June

0.1

.1

.1

.1 

.1

o

0

0

.1

o

.1

.2

8^9

4.0

.7

.1

0

0

0

o

0

0

**.!

.1

0

.1

.1.1

.1

.6

15.8

0.53

51

July

0

0

0

0 

0

**.!

.3

.3

.1

.1

**.5

.1

.4

.1

.5

.1

.5

.1

.2

.1

.1

.1

.1

.4

.1

.2

.1

.2

.2

.1

.1

4.6

0.15

9.1

Aug.

**0.5

. 2

0

o

.5

O

.1

0

.1

0

.1

.3

.2

.1

.1

.1

.2

.1

0

.1

.1

0

0

0

.1

.1

.1

0

0

0

.1

2.8

0.09

5.6

Sept.

0.1

.1

.1

0 

0

o

.1

0

.1

0

0

.1

0

.1

IS

.4

0

*0

.2

0

0

0

0

0

.1

o

0

0

0

.1

14.5

0.48

29

Calendar year 1955: Max 251 Min 0 Mean 2.02 Ao-ft 1,47O

Water year 1955-56: Max 251 Min 0 Mean 3.14 Ao-ft 2,280

discharge unknown).

* Discharge measurement made on this day.

** Field estimate made on this day.

Note.--No gage-height record Feb. 21 to Mar. 5, Mar. 14-21, Apr. 12 to May 2; discharge estimated 

on basis of 3 discharge measurements, recorded range in stage, and records for nearby stations.
226 KERN RIVER BASIN

Kern River near Kernville, Calif.

Location. Lat 35"56'00", long 118"29'10", in NE^ sec. 14, T. 23 S., R. 32 E., on left bank 

3 miles upstream from Salmon Creek and 13 miles north of Kernville.

Drainage area.--865 sq mi (revised).

Records available. January 1912 to September 1956. Records of daily discharge include 

flow of Kern River No. 3 Canal. Prior to October 1953, records for canal published 

separately.

Gage. Water-stage recorder. Altitude of gage is 3,550 ft (from topographic map). Prior 

To Apr. 1, 1913, at site 0.2 mile downstream at different datum. Apr. 1 to Sept. 14, 

1913, staff gage and Sept. 15, 1913, to Feb. 20, 1922, water-stage recorder, at present 

site at datum 5.00 ft higher.

Average discharge. 44 years, 717 cfs (519,100 acre-ft per year), combined flow of Kern 

River near Kernville and Kern River No. 3 Canal; median of yearly mean discharges, 

620 cfs (448,900 acre-ft per year).

Extremes (river only).--Maximum discharge during year, 27,200 cfs Dec. 23 (gage height, 

17.55 ft), from rating curve extended above 6,000 cfs on basis of computed peak flow 

over dam (basic data for computation furnished by Southern California Edison Co.); minimum daily, 1.4-cfs Jan. 22.

1912-56: Maximum discharge, that of Dec. 23, 1955; no flow July 31 to Nov. 7, Nov. 12 

to Dec. 7, 1924, Jan. 16 to Feb. 7, 1925.

Revisions. The maximum discharge for the water year 1916 has been revised to 11,500 

cfs Jan. 17, 1916 (gage height, 8.8 ft), superseding figure published in WSP 441.

Remarks.--Records good. Records of daily discharge presented herein include flow of Kern 

River No. 3 Canal which diverts 1 mile above station, from left bank of Kern River in 

sec. 12, T. 23 S., R. 32 E., for power development; water is returned to river 12 miles 

below station. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Cooperation.--Water-stage-recorder graph and 15 discharge measurements for Kern River and 

water-stage-recorder graph and 14 discharge measurements for canal furnished by Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions. Revised figures of discharge, in cubic feet per second, for the water year 

1912, superseding those published in WSP 331, are given herewith:

1912 

Jan. 1............ 275

2............ 275

3............ 275

4............ 275

5............ 275

1912-Con.

Jan. 6............ 275

7............ 275

8............ 275

9............ 275

Month Maximum

278

3,000

Minimum

265

150

Mean

270

446

Runoff In 

acre-feet

16,600

322,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1!5

16

17

18

19

20

21

22

23

24

2E

26 

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

139

139

139

*138

139

139

137

139

138

138

138

139

136

135

137

139

139

138

138

138

139

141

142

139

139

140

143

143

142

*141

141

4,312

139

8,550

Nov.

139

140

141

141

142

145

143

143

142

142

141

140

142

171

151

170

192

183

195

207

223

*206

176

184

180

183 

186

187

187

186

5,008

167

9,930

Dec.

291

275

*198

197

204

490

457

295

726

446

342

312

303

*292

283

271

264

258

249

253

264

682

16 . 100

5,620

3,160

2,710 

2,270

1,670

1,390

1,210

1,130

42,612

1,370,

84,520

Jan.

1,030

947

870

809

763

734

699

*665

647

629

631

657

627

602

608

723

635

607

586

587

591

563

66?

604

1,920

1,840 

2.120

1,360

1,100

972

909

26,697

861

52,950

Feb.

795

742

*730

723

724

702

679

672

641

648

647

659

670

670

665

634

602

617

578

584

575

576

647

622

576

582 

550

547

544

18,601

641

36,890

Mar.

542

*544

564

574

579

562

554

*547

575

600

633

657

636

652

678

682

679

710

746

750

775

824

859

934

1,010

1,050 

1,040

1,040

1,080

1,120

1.140

23,316

752

46,250

Apr.

1,130

1,050

1,000

*965

962

967

1,030

1,070

1,140

1,220

1,260

1,260

1,200

1,120

1,100

1,130

1,120

1,060

1,070

1,090

1,120

1,140

1,250

1,370

1,460

1.560 

*1,510

1,410

1,390

*1,440

35,594

1,186

70,600

May

1.500

1,620

1,780

2,080

2,020

1,980

1,900

1,820

1,840

1,770

1,700

1,640

1,580

1,510

1,560

*1,680

1,860

1,920

2,270

2,270

2,580

2,900

*3,240

5.520

3,180

3,080 

3,290

3,160

3,250

*3,310

3,250

71,060

2,292

140,900

June

3,110

3,090

2,960

2,970

2,850

*2,710

2,810

2,960

3,120

5.510

3,160

3,040

3,010

2,890

2,750

2,350

2.270

2,450

2,630

2,520

2,280

*2,350

2,500

2,630

2,460

2,400 

2,5/0

2,690

2,640

2,700

82,180

2,739

163,000

July

2.540

2,040

1,830

1,760

1,730

 1,730

1,700

1,680

1,660

1,630

1,520

1,440

1,330

1,220

1,140

1,110

1.100

1,140

1,200

1,500

1,890

1,810

1,720

1,670

*1,480

*1,600 

1,940

1,620

1,430

1,300

1,200

48,460

1,563

96,120

Aug.

1.120

1,030

925

837

778

731

702

690

688

670

655

645

617

596

590

580

564

547

526

512

496

480

468

460

449

440 

428

*420

434

428

410

18,916

610

37,520

Sept.

412

4lff

400

390

382

374

371

353

340

332

326

*326

321

312

304

296

286

280

276

279

288

283

275

270

266

262 

258

260

258

«254

9,444

315

18,730

Calendar year 1955: Max 16,100 Mln 135 Mean 550 Ac-ft 398,300

Water year 1955-56: Max 16,100 Mln 135 Mean 1,055 Ac-ft 766,000

Discharge measurement of river made on this day.
KERN RIVER BASIN

Kern River at Kernville, Calif.

227

Location. Lat 35°45'15", long 118°25'25", in NEiSW± sec. 15, T. 25 S., R. 33 E., on right 

bank 300 ft downstream from highway bridge, at new town of Kernville, 1.1 miles upstream 

from Caldwell Creek, 8.9 miles upstream from Isabella Dam, and 41 miles northeast of 

Bakersfield.

Drainage area. 1,026 sq mi.

Records available. January 1905 to September 1912, October 1953 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,621.57 ft above mean sea level (levels by 

Corps of Engineers). January 1905 to September 1912 staff gage at two sites 3t miles 

downstream at different datums.

Average discharge. 10 years (1905-1912, 1953-56), 985 cfs (713,100 acre-ft per year).

Extremes. Maximum discharge during year, 29,400 cfs Dec. 23 (gage height, 16.20 ft in gage 

well, 16.8 ft outside, from floodmarks), from rating curve extended above 7,200 cfs on 

basis of slope-area determination of peak flow; minimum, 128 cfs Oct. 7, 8, 13 14.

1905-12, 1953-56: Maximum discharge, that of Dec. 23, 1955; minimum, 74 cfs Oct 27 

1954.

Maximum stage known since at least 1912, 18.4 ft (revised, from levels furnished by 

Corps of Engineers) Nov. 19, 1950 (discharge not determined).

Remarks. Records excellent. Slight regulation at times by operation of Kern River No 3 

Canal and powerplant. A few small diversions for irrigation above station. Gilbert 

irrigation ditch diverts up to 7 cfs around station during irrigation season.

Cooperation. Seventeen discharge measurements furnished by the Southern California Edison 

Co. and 3 discharge measurements furnished by Kern County Land Co.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 25 Jan. 25 to Sept. 30

3.6 

4.0

4.5 

5.0 

6.0

98

172

310

500

1,000

7.0

8.0

9.0

11.0

14.0

1,740

2,720

4,040

8,480

18,400

4.2 220

4.5 515

5.0 550

6.0 1,120

7.0 1,900

8.0 2,990

9.0 4,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

134 

136

136

134

136

134

130

130

132

130

132

132

130

130

130

134

134

134

134

136

138

140

140

138

138

*138

140

142

142

140

140

4,194

135

8,320

Nov.

m144

144

144

146

146

144

144

142

142

142

144

177

156

172

202

195

208

218

232

*230

188

195

193

195

200

202

202

202

5,231

174

10,380

Dec.

332

357

235

220

225

531

657

356

846

568

416

373

*352

342

*324

306

300

289

278

278

296

547

"16.900

*6,600

3,260

2,720

2,520

1,830

1,510

*1,520

1,220

46,308

1,494

91,850

Jan.

1,140 

1,070

988

928

875

835

805

765

730

705

*685

690

690

671

662

715

730

662

635

622

630

608

662

705

3,170

2,760

5.250

1,740

1,360

1,200

1,110

32,798

1,058

65,050

Feb.

980 

*908

*884

860

848

824

788

776

752

729

734

*754

746

758

758

729

690

707

658

658

641

641

680

734

663

663

620

620

615

21,398

738

42,440

Mar.

610

615

636

*646

658

636

*600

615

646

668

690

707

729

724

724

724

752

794

848

872

896

944

980

1,060

1,150

1,200

1,180

1,180

1,210

1,250

1.280

26,224

846

52,010

Apr.

1,260 

1,200

1,130

1.080

*1,OBO

1,100

1,130

1,190

1,250

1,320

1,370

1,400

1,340

1,250

1,230

1,290

1,270

1,250

1,220

1,240

1,250

1,270

1,360

*1,500

1,590

1.690

1,670

1,540

1,500

*1,510

39,480

1,316

78,310

May

1,570

1,670

1,830

2,190

2,130

2,040

1,970

1,880

1,890

1,860

1,760

1,670

1,590

1.540

1,570

1,660

1,840

1,880

2,230

2,200

2,420

*2,890

3,260

*5.590

3,290

3,030

3,260

3,130

3,160

3,2SO

*3,200

71,460

2,305

141,700

June

3,030 

3,030

2,900

2,890

2,790

2,640

*2,730

2,900

3,060

5.240

3,150

5,000

5,020

2,890

2,740

2,400

2.280

2,440

2,620

2,550

2,520

2,400

*2,470

2,640

2,510

2,470

2,580

2,690

2,690

2,660

81,690

2,725

162,000

July

2)000

1,790

1,700

1,670

1,650

*1,640

1,620

1,610

1,580

1,500

1,410

1,550

1,250

1,160

1,120

1.110

1,160

1,220

1,500

1,940

1,860

1,750

*1,700

1,500

*1,550

l,97p

1,620

1,440

1,510

1,220

48,150

1,555

95,500

Aug.

1.150 

1,040

938

854

796

734

*696

668

*668

658

656

620

600

575

560

*550

*550

510

485

476

458

*444

*450

422

412

599

390

*382

394

*590

5_74

18,219

588

36,140

Sept.

574 

570

566

558

550

552

540

529

312

304

298

294

*284

280

274

270

258

?51

248

248

258

248

242

257

231

226

226

228

231

228

8,495

285

16,850

Calendar year 1955: Max 16,900 Mln 130 Mean 568 Ac-ft 411,000

Water year 1955-56: Max 16,900 Mln 130 Mean 1,103 Ac-ft 800,600

Peak discharge (base. 2,000 efs). --Dee. 25 (8:30 a.m.) 29, 

7,760 cfs (10.75 ft)) May 24 (1 p.m.) 5,860 cfs (8.64 ft); J 

July 27 (5 a.m.) 2,160 cfs (7.27 ft). *

,400 cfs (16.20 ft); Jan. 25 (4:30 p.m.) 

July 21 (6:50 a.m.) 2,140 Cfs (7.25 ft);

.. , . . 

Discharge measurement made on this day
KERN RIVER BASIN

Borel Canal below Isabella Dam, Calif.

Location. Lat 35°38'30", long 118°28'10", In NEir sec. 30, T. 26 S., R. 33 E., on right bank 

500 ft downstream from Isabella Dam and 3 miles upstream from point where canal crosses 

Erskine Creek.

Records available. January 1910 to September 1914. Octo ber 1925 to September 1956. Prior

to October 1951, published as "at Tillie Creek.

Gage. Water-stage recorder. Altitude of gage is 2,540 ft (from topographic map). Prior 

to Apr. 29, 1952, at site 4 miles upstream at different datum.

Average discharge.--31 years (1925-56), 363 cfs (262,800 acre-ft per year).

Extremes.--1925-56: Maximum daily discharge, 634 cfs Mar. 13, 14, 1952; no flow at times.

Remarks. Records good. Canal diverts from left bank of Kern River at Isabella Dam to 

supply Borel powerplant of Southern California Edison Co., 6 miles downstream from station, at which point water is returned to Kern River.

Cooperation. Water-stage-recorder graph and 49 discharge measurements furnished by

Southern California Edison Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

El

ZZ

23

24

25

26

Zl

28

29

30

31

Total

Mean

Ac- ft

Oct.

143

*141

141

143

141

139

135

134

136

137

138

139

138

136

136

139

139

140

142

141

142

144

144

143

*141

140

*141

142

144

145

145

4,349

140

8,630

Nov.

*148

143

145

147

147

148

148

147

147

145

143

144

142

T83

165

172

199

198

201

217

*225

235

192

196

194

196

200

205

204

204

5,280

176

10,470

Dec.

254

*402

239

222

220

332

556

359

482

592

402

351

*328

320

*307

293

284

276

268

268

281

349

572

551

556

543

556

441

323

267

323

11,517

372

22,840

Jan.

510

561

*563

563

562

563

563

563

566

568

569

569

569

568

568

566

568

566

565

566

566

566

563

562

559

545

548

559

569

569" 570 

17,432

562

34,580

Feb.

*570

572

572

572

572

572

572

569

569

569

572

*570

569

568

569

570

570

569

568

572

572

573

575

572

572

572

573

573

573

16,561

571

32,850

Mar.

*573

573

575

573

575

*572

575

573

573

573

572

572

573

572

*573

573

572

572

570

570

570

570

570

569

566

568

568

566

566

566

563

17,696

571

35,100

Apr.

562

*559

559

558

558

558

556

556

559

565

566

568

568

566

568

569

568

566

*566

*543

1O

*188

*576

*572

*570

*566

565

565

565

566

15,981

533

31,700

May

*578

*584

584

584

586

588

588

588

588

589

580

574

571

572

*572

570

571

571

571

571

*572

*572

572

*572

572

572

571

571

570

571

*574

17,869

576

35,440

June

57.8

580

580

577

576

572

570

570

570

566

564

560

559

558

554

550

552

548

552

553

*553

553

552

552

*507

475

*532

531

528

524

16,596

553

32,920

July

*524

520

518

515

514

511

508

507

*513

518

521

521

520

521

520

521

521

529

528

536

534

535

*534

*540

*548

*548

*554

552

560

562

564

16,417

530

32,560

Aug.

*562

556

552

*546

547

553

554

552

*550

547

547

546

546

544

542

542

541

540

541

538

538

536

536

536

535

534

*531

532

531

529

5_2§

16,812

542

33,350

Sept.

*528

529

528

528

528

529

536

540

541

542

*541

541

540

540

541

541

541

541

541

541

541

541

542

541

541

541

546

550

548

548

16,176

539

32,080

Calendar year 1955: Max 592 Min 134 Mean 351 Ac-f t 253, 800

Water year 1955-56: Max 592 Mln 1O Mean 472 Ac-ft 342,500

Discharge measurement made on this day.
KERN RIVER BASIN 229

South Pork Kern River near Onyx, Calif.

Location. Lat 35°44', long 118°10', in SW£ sec. 24, T. 25 S., R. 35 E., on left bank threequarters of a mile north of State Highway 178, 1.4 miles upstream from Canebrake Creek, 

and 5 miles northeast of Onyx.

Drainage area. 530 sq mi (revised).

Records available. September 1911 to August 1914, January 1919 to September 1942, August 

1947 to September 1956.

Gage. Water-stage recorder and broad-crested weir. Altitude of gage Is 2,900 ft (from 

Topographic map). Sept. 12, 1911, to Aug. 31, 1914, staff gage and Jan. 23, 1919, to 

Apr. 17, 1936, water-stage recorder, at site 140 ft upstream at same datum.

Average discharge. 30 years (1911-13, 1919-25, 1929-42, 1947-56), 105 cfs (76,020 acre-ft 

per year); median of yearly mean discharges, 72 cfs (52,100 acre-ft per year).

Extremes. Maximum discharge during year, 2,050 cfs Dec. 24 (gage height, 5.73 ft); minimum, 7.3 cfs Oct. 1.

1911-14, 1919-42, 1947-56: Maximum discharge, 3,450 cfs Mar. 2, 1938 (gage height, 

6.69 ft), from rating curve extended above 1,900 cfs, but may have been exceeded by 

flood of Jan. 25, 1914 (maximum observed gage height, 7.2 ft and rising, at site then 

in use); no flow several days in July and August 1929 and September 1934.

Remarks. Records excellent. Lowell and Thomas ditches divert above station for irrigation of about 160 acres below station; combined capacity, about 5 cfs.

Revisions (water years).--WSP 1151: 1948(M).

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

1.4

1.5 

1.7 

1.9 

2.2 

2.6 132

2.8 

3.2 

3.6 

4.0 

4.6 

5.2

176

294

458

670

1,080

1,570

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.7

8.1

7.7

8.1

9.5

9.8

10

11

11

12

12

12

11

11

11

11

11

12

15

15

14

14

13

13

14

15

*15

16

15

15

16

571.7

12.0

757

Nov.

14

14

14

14

15

15

15

15

15

14

15

15

16

20

17

17

16

14

14

17

22

29

*25

22

22

22

24

24

24

25

543

18.1

1,080

Dec.

39

43

26

23

20

30

54

57

57

55

45

41

58

*56

54

33

52

31

51

31

31

36

654

1.490

525

572

519

224

174

154

150

4,805

155

9,550

Jan.

110

122

119

106

104

104

96

88

87

li

87

88

88

88

92

101

101

95

95

90

88

86

88

84

417

446

469

196

132

122

130

4,199

155

8,330

Feb.

117 in

108

115

117

115

108

106

94

105

104

106

111

111

111

104

96

101

88

94

94

95

99

99

92

90

88

87

87

2,947

102

5,850

Mar.

88

87

90

93

96

96

*90

88

94

99

110

115

121

128

128

132

142

158

179

210

259

274

294

519

369

417

412

595

599

408

412

6,282

203

12,460

Apr.

590

550

316

294

294

501

319

350

365

378

378

578

338

554

530

357

561

555

350

526

342

350

365

399

417

*426

435

386

361

557

10,680

556

21,180

May

361

365

37S

395

417

595

575

557

553

575

557

519

294

274

261

255

252

258

271

268

268

271

287

501

*505

294

281

268

255

246

255

9,585

509

19,010

June

222

215

208

197

189

179

169

160

155

147

140

154

149

119

115

115

108

105

99

94

95

*88

81

75

67

59

58

55

54

52

------

5,695

125

7,320

July

47

46

47

47

46

45

40

55

55

51

29

27

27

26

27

26

25

^

27

29

48

44

55

*67

65

60

58

59

62

52

43

1,294

41.7

2,570

Aug.

54

30

28

27

27

25

24

19

18

17

15

15

15

13

15

13

15

15

15

13

13

15

13

12

9.5

8.5

*8.9

9.8

10

11

11

500.5

16.1

995

Sept.

11

10

8.9

9.5

9.3

9.3

9.8

11

11

11

11

12

Tl

11

12

12

12

11

11

11

*11

12

12

12

12

11

11

12

12

12

------

331.6

11.1

658

Calendar year 1955: Max 1,490 Min 1.2 Mean 45.9 Ac-ft 33,250

Water iter year year 1955-56: 1955-56: Max Max 1,490 i,4MO Min Min 7.7 7.7 Mean Mean 124 124 Ac-ft Ac-ft 89,720 89,720

Peak discharge (base, 180 cfs).--Dec. 24 (2 a.m.) 2,O50 cfs (5.73 ft); Jan. 27 (3 a.m.) 776 cfs 

:.17 ft); Mar. 26 (10 a.m.) 473 cfs (3.65 ft); Apr. 10 (4 p.m.) 43O cfs (3.54 ft); Apr. 26 (6 p.m.) 

449 ,9 cfs cfs (3.58 (3.58 ft). ftl.

* Discharge measurement made on this day.

493801 O - 59 - 16
230 KERN RIVER BASIN

Isabella Reservoir near Isabella, Calif.

Location. Lat 35°38'50", long 118°28'50", in SW£ sec. 19, T. 26 S., R. 33 E., in main 

control tower near left abutment of main (Jam on Kern River, 1.5 miles north of new town 

of Isabella and 2.8 miles upstream from Erskine Creek.

Drainage area. 2,093 sq mi.

Records available. October 1953 to September 1956.

Gage_.--Water-stage recorder. Datum of gage Is at mean sea level (levels by Corps of 

Engineers).

Extremes. Maximum contents during year, 283,000 acre-ft June 30 (elevation, 2,575.80 ft); 

minimum, 12,530 acre-ft Nov. 24-26 (elevation, 2,509.43 ft).

1953-56: Maximum contents, that of June 30, 1956; minimum since appreciable storage 

was attained, 4,330 acre-ft Apr. 21, 1955.

Remarks. Reservoir is formed by earth-fill dam with side-hill spillway and auxiliary 

earth-fill dam, completed in 1954; regulation of discharge from reservoir began 

Apr. 15, 1954. Minor detention storage occurred during construction of dam prior to 

this date, the maximum being 1,750 acre-ft on Apr. 27, 1953. Usable capacity. 569,700 

acre-ft between elevations 2,470.0 ft (invert of main outlet) and 2,605.5 ft (spillway 

crest) above mean sea level. Dead storage, 326 acre-ft is not available for release. 

Surcharge flood-control storage, 271,800 acre-ft between ungated spillway crest and 

elevation 2,627.0 ft (maximum design spillway flood pool). Records, including extremes, 

show total contents at 12 p.m. Water is released to Kern River through tunnel in left 

abutment of main dam and to Borel Canal through concrete conduit in auxiliary dam.

Cooperation. Record of contents furnished by Corps of Engineers and reviewed by Geological 

survey.

Revisions: WSP 1395: Drainage area.

Capacity table, water year 1955-56 (elevation, In feet, and 

contents, In acre-feet)

2.509

2.510

2,520

12,100

13,100

26,400

2,530

2,540

2,550

47,300

77,300

118,500

2,560

2,570

2,580

172,700

239,000

317,500

Contents, in acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

14.610 

14 , 530

14,430

14,360

14,320

14,260

14,260

14,260

14,260

14,250

14,230

14,210

14,200

14,180

14,160

14,150

14,130

14,110

14,080

14,060

14,040

14,030

14,010

14,000

13,990

13,970

13,950

13,940

13,920

13,890

13j870

2,510.77

-840

Nov.

13.850 

13,830

13,810

13,800

13,790

13,790

13,670

13,490

13,310

13,110

12,900

12,700

12,570

12,560

12,560

12,550

12,550

12,550

12,550

12,560

12,560

12,560

12 , 550

12,530

12 , 550

12,530

12 , 540

12,540

12,550

12,540

- __

2,509.44

-1,330

Dec.

12,810 

12,860

12,860

12,860

12,860

13,420

13,860

13,900

14,490

14,650

14,670

14,680

14,680

14,680

14,670

14,660

14,660

14,650

14,650

14,660

14,660

14,870

38,080

51,800

59,200

64,530

69,140

72,410

74,960

76,910

78,570

2,540.35

+66,030

Jan.

78,820

80,920

81,720

82,630

83,260

83,710

84,350

84,840

85,220

85,560

85,930

86,310

86,730

87,000

87,350

87,930

88,360

88,710

88,980

89,210

89,520

89,790

90,180

90,780

97,870

103,900

111,600

114,700

116,600

118,400

119,700

2,550.25

+41,130

Feb.

120,800

1211600

122,500

123,200

124,000

124,800

125,300

125,800

126,400

127,000

127,600

128,000

128,300

128,500

128,600

128,600

128,600

128,700

128,700

128,700

128,700

128,700

128,700

128,700

128,700

128,700

128,700

128,600

128,600

_ __ _ _

2,552.06

+8,900

Mar.

128,500

128,300

128,100

127,800

127,800

128,100

127,800

127,700

127,300

126,500

125,900

125,300

124,300

123,500

122,500

121,300

120,400

119,300

118,800

118,400

118,400

118,500

119,100

119,600

120,300

121,300

122,300

123,500

124,500

125,600

127,200

2,551.77

-1,400

Apr.

128,500

129,900

131,200

132,300

133,300

134,500

135,700

137,100

138,600

140,200

142,000

144,500

146,600

148,500

150,400

152,400

154,200

155,900

157,500

159,200

160,700

162,200

163,900

165,900

167,500

169,000

170,400

171,600

172,500

173,600

.

2,560.15

+46,400

May

174,500

175,600

176,800

179,000

181,100

183,000

184,900

186,300

187,700

188,900

190,000

190,800

191,500

192,100

192,700

193,400

194,400

195,400

197,000

198,600

200,300

203,200

206,900

211,100

215,000

218,100

221,600

224,900

228,200

231,700

235,100

2,569.45

+61,500

June

238,100

241 ; 400

244,100

246,900

249,300

251,600

253,800

256,200

258,800

261,700

264,700

267,400

269,600

270,900

272,000

272,600

272,800

273,300

274,100

274,800

275,100

275,600

276,200

277,100

278,800

280,200

280,900

281,800

282,400

283,000

 

2,575.80

+47,900

July

282,900

282,700

282,100

281,200

280,200

279,300

278,500

277,600

276,500

275,400

274,200

272,600

271,100

269,200

267,400

265,500

263,800

262,200

260,700

260,000

259,900

259,600

259,000

258,700

257,900

257,400

257,300

256,500

255,500

254,000

252,500

5,571.83

-30,500

Aug.

250,800

248^300

246,900

244,900

242,700

240,500

238 , 000

235,400

232,900

230,600

227,900

225,300

222,500

219,700

216,800

213,900

210,900

208,000

205,200

202 , 200

199,600

198,700

197,700

196,500

195,400

194,300

193,100

192,000

190,900

189,700

188,600

2,562.57

-63,900

Sept.

187,600

186,500

185,600

184,500

183,400

182,200

180,900

179,600

178,400

177,300

175,900

174,700

173,500

172,200

170,900

169,700

168,600

167,400

166,000

164,700

163,500

162,300

161,100

160,100

159,000

157,800

156,800

155,800

154,700

155,700

 

2,556.76

-34,900

Calendar year 1955................... * +69,900

Water year 1955-56................... * +138,990

t Elevation, In feet, at end of month. 

* Change'.'In contents In acre-feet.
KERN RIVER BASIN 231

Kern River below Isabella Dam, Calif.

Location. La t 35°38'30", long 118 "28'55", in S^NW^ sec. 30, T. 26 S., R. 33 E., on right 

bank 200 ft downstream from highway bridge, 0.6 mile downstream from Isabella Dam, and 

1.6 miles southwest of Isabella.

Drainage area. 2,094 sq ml.

Records available.--April 1945 to September 1956. Prior to October 1952, published as 

"below Isabella dam site."

Sage. Water-stage recorder. Datum of gage is 2,435.07 ft above mean sea level (levels by 

Corps of Engineers). Prior to Mar. 12, 1952, water-stage recorder at site 0.6 mile upstream at different datum. Mar. 12, 1952, to July 26, 1953, staff gage at present site 

and datum.

Average discharge. 11 years, 405 cfs (293,200 acre-ft per year).

Extremes.--Maximum discharge during year, 3,050 cfs June 26 (gage height, 11.06 ft), from 

rating curve extended above 1,700 cfs; minimum, 0.4 cfs Jan. 2.

1945-56: Maximum discharge, 39,000 cfs Nov. 19, 1950 (gage height, 28.6 ft, from 

floodmark, present site and datum), from rating curve extended above 1,100 cfs on basis 

of slope-area determination of peak flow; no flow Oct. 29, 1954.

Remarks. Records excellent. Plow regulated by Isabella Reservoir beginning Apr. 15, 1954 

(see preceding page). Borel Canal (see p. 228 ) diverts above station. Diversions for 

irrigation of about 3,500 acres between head of Isabella Reservoir and upstream stations. 

An additional 6,500 acres in reservoir bottom can be irrigated when reservoir stage Is 

low. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions. WSP 1345: Drainage area.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

2.3

2.4 

2.6 

2.9 

3.2 

3.6 

4.0

0.8

1.9

5.1

11

20

38

61

4.5 

5.0 

5.5 

6.0 

7.0 

8.0 

10.0

99

155

235

345

655

1,090

2,250

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Ttota]

Mean

Ac-ft

Ml*>,

(tt)

Oct.

51

44

44

38

34

24

12.

10

10

12

16

17

16

16

16

16

16

16

16

16

16

16

16

16

16

*16

16

IS 

16

16

16

614

19.8

1,220

-841

8,630

541

Nov.

16

16

16

16

16

16

66

97

97

97

97

96

96

50

17

16

16

16

16

16

19

*23

23

23

17

12.

1?

13 

13

13

1,059

35.3

2,100

-1,332

10,470

260

Dec.

12

13

22

23

23

14

' It!

15

9.7

1.2

8.2

22

22

22

*22

22

22

22

12

6.4

12

14

3.1

2.0

2.0

1.6

1.7

7.4 

87

151

97

693.5

22.4

1,380

+66,026

22,840

190

Jan.

M

T7T

2.6

1.7

2.6

3.7

3.2

3.0

2.6

2.6

2.8

2.8

2.4

2.4

1.9

1.9

1.8

1.8

1.7

1.6

1.1

1.1

1.8

2.2

77

-98 255

1.6 

1.4

4.3

1.8

490.6

15.8

973

+41,160

34,580

403

Feb.

1.7

1.5

1.4

1 9

Itf

1.4

1.2

1.2

1.4

1.4

1.4

1.4

87

202

202

202

187

171

171

171

171

171

179

222

190

172

172

118 

92

2,896.6

99.9

5,750

+8,879

32,850

781

Mar.

142

141

146

174

146

122

*T62~

182

235

425

479

515

606

655

759

827

T63

727

703

602

449

392

392

392

392

392

371

350 

389

303

12,722

410

25,230

-1,456

35,100

1,442

Apr.

255

179

140

155

163

163

122

101

117

130

130

48

1*0

2.4

1.4

1.0

40

111

111

122

691

501

115

106

486

*606

675

719 

719

719

7,429.8

248

14,740

+46,465

31,700

1,798

May

767

847

855

791

755

759

775

878

945

945

945

945

945

918

900

950

981

1,000

1,020

1,050

1.080

1,020

*954

922

*927

936

954

958 

1,020

1,040

995

28,777

928

57,080

+61,465

35,440

3,330

June

936

922

936

950

995

1,040

1,080

1,160

1,200

1,180

1,100

1,100

1,240

1,500

1,530

1,530

1,620

1,620

1,620

1,630

*1,640

1,590

1,610

1,670

1,250

1,180

1,740

1.820 i'rso

1,780

40,949

1,365

81,220

+47,953

32,920

5,496

July

1.710

1,520

1,430

1,510

1,540

1,500

1,500

1,530

1,560

1,540

1,520

1,520

1,520

1,510

1,490

1,410

1,380

1,380

1,360

1,330

1,430

1,540

1,440

*1,400

1,310

1,300

1,410

1,430 

1.500

1,300

1,300

44,920

1,449

89,100

-30,562

32,560

6,085

Aug.

1,280

1,250

1,250

1,250

1,240

1,270

1,320

1,320

1,320

1,310

1,340

1,390

1,390

1,390

1,420

1.440

1,430

1,410

1,390

1,390

1,220

387

387

376

565

366

366

*374 

*384

394

387

31,804

1,026

63,080

-63,832

33,350

5,509

Sept.

371

361

361

361

361

381

394

394

345

305

*387

361

340

338

340

316

294

316

335

333

333

335

268

227

287

261

212

205 205"

205

9,526

318

18,890

-34,911

32,080

4,188

Adjusted for change in reservoir contents, diversion, and evaporation

Mean 

Ac-ft

155 

9,550

193 

11,500

Calendar year 1955: 

Water year 1955-56:

1,471 

90,440

1,254 

77,120

839 

48,260

981 

60,320

1,591 

94,700

2,558 

157,300 3

Observed

Max 1,120 Min 0.8 Mean 130 Ac-ft 94,340 

Max 1,820 Min 1.0 Mean 497 Ac-ft 360,800

2,816 

67,600

1,581 

97,180

620 

38,110

340 

20,250

Adjusted

Mean 586 Ac-ft 424,600 

Mean 1,202 Ac-ft 872,300

* Discharge measurement made on this day.

t Change in contents, in acre-feet, in Isabella Reservoir; furnished by Corps of Engineers.

* Diversion, In acre-feet, to Borel Canal.

tt Evaporation, in acre-feet, from Isabella Reservoir; furnished by Corps of Engineers.
232 KERN RIVER BASIN

Kern River near Democrat Springs, Calif.

Location. Lat 35°31'20", long 118°40i40", in NE^SE^ sec. 6, T. 28 S., R. 31 E., on left 

Bank 1.0 mile southwest of Democrat Springs and 2.1 miles upstream from Cow Creek.

Drainage area. 2,264 sq mi.

Records available.--July 1950 to September 1956. Prior to October 1954, records for Kern 

River and Kern River No. 1 conduit published separately.

Gage.--Water-stage recorder. Altitude of gage is 1,850 ft (from topographic map).

Average discharge.--6 years, 950 cfs (687,800 acre-ft per year), combined flow of Kern 

Kiver and Kern River No. 1 conduit.

Extremes (river only). Maximum discharge during year not determined; minimum daily, 

U.I cfs Oct. 30 to Nov. 12.

1950-56: Maximum discharge, 40,000 cfs Nov. 19, 1950 (gage height, 30.7 ft), from 

rating curve extended above 8,700 cfs on basis of computation of peak flow over dam 

(basic data for computation furnished by Southern California Edison Co.); minimum daily, 

that of Oct. 30 to Nov. 12, 1955.

Remarks.--Records good. Records of daily discharge presented herein include flow of Kern 

River No. 1 conduit which diverts from left bank of Kern River in sec. 13, T. 28 S., R. 

30 E., for power development; water is returned to river 7 miles below station. Flow 

regulated by Isabella Reservoir beginning in 1954 (see p. 230). Many diversions above 

station for irrigation.

Cooperation.--Water-stage-recorder graph and 10 discharge measurements for river and waterstage-recorder graph and 13 discharge measurements for conduit furnished by Southern 

California Edison Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

IE

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

AC- ft

Oct.

206 

192

*188

186

176

174

158

146

147

147

151

157

157

153

152

154

157

156

157

162

159

162

164

163

161

158

160

*161

162 

164

163

5,053

163

10,020

Nov.

162 

163

163

166

166

168

176

254

255

254

249

248

247

280

201

186

206

225

214

232

247

267

233

217

222

212

214

219

219 

219

6,484

Dec.

252 

435

302

256

248

318

571

438

426

556

449

389

367

358

346

*334 

320

312

306

289

293

310

543

583

553

570

583

518

414 

445

448

12,562

216 j 405

12,860 24,920

Jan.

508 578"

583

585

583

582

583

583

*583

583

583

583

582

578

580

580

581

584

580

579

579

581

592

586

737

1,150

1,560

783

708

681

19,980

645

39,630

Feb.

647 

639

632

611

*609

633

616

605

602

600

599

598

593

773

789

792 

788

764

766

768

770

770

774

773

802

781

781

756

684

20,315

701

40,290

Mar.

724 

757

729

765

*761

724

741

777

781

964

1,060

1,070

1,170

1,220

1,320

1,450 

1,400

1,330

1,320

1,240

1,130

1,000

998

995

986

980

971

938

961

937

31,161

Apr.

858 

824

747

749

763

758

739

694

698

720

726

716

621

599

594

593

589

689

701

702

718

714

750

695

*933

1,200

1,240

1.510

1,310

1,500

24,250

1,005! 80S

61,810 48,100

May

1,520 

1, 440

1,460

1,420

1,560

1,360

1,370

1,440

1,560

1,540

1,540

1,540

1,530

1,540

1,580

1,550 

1,500

1,490

1,470

1,450

1,420

1,450

1,500

1,550

1,550

*1,560

1,580

1,580

1,610

1,660

1,650

46,550

1,502

92,530

June

1,580 

1.540

1,550

1,570

*1,590

1,670

1,680

1,770

1,830

1,810

1,750

1,700

1,780

1,650

2,170

2,090 

2,220

2,220

2,210

2,220

2,250

2,190

2,190

2,250

2,190

1,680

2,310

2,590

2,550 

2,550

58,750

1,958

116,500

July

2.260 

*2,116

1,990

2,040

2,110

2,060

2,040

2,050

2,090

2,090

2,050

2,050

2,050

2,050

2,040

1,960 

1,950

1,920

1,920

1,890

1,900

2,110

1,980

1,970

*1, 850

1.840

1,910

2,010

1,850 

1,850

1,850

61,820

1,994

122,600

Aug.

1,840 

1,790

1,790

1,780

1,760

1,780

1,860

1,860

1,860

1,850

1,870

1,950

1,940

1,940

1,950

1,990 

1,980

1,970

1,950

1,960

1,960

1,020

922

917

893

890

559" 888

*906 

908

*914

28,777

1,573

96,750

Sept.

889 

876

872

865

867

878

908

915

914

808

915

902

870

868

870

865 

827

856

862

860

860

860

854

768

788

832

757

757

T8~2" 752 

25,421

847

50,420

Calendar year 1955: Max , 1,680 Hln 146 Mtan 484 Ac-ft 350,600

Water year 1955-56 : Max 2,390 Min 146 Mean 987 Ac-ft 716,200

Discharge measurement of river made on this day.
KERN RIVER BASIN 233

Kern River below Kern Canyon powerhouse, Calif.

Location Lat 35°26'10", long 118°48'50", in NW^SE^ sec. 1, T. 29 S., R. 29 E., on left 

bank 1 mile downstream from Kern Canyon powerhouse, 1.3 miles upstream from Cottonwood 

Creek, and 11 miles northeast of Bakersfield. '

Drainage area.--2.327 sq mi.

Records available. October 1893 to September 1956. Prior to Oct. 1, 1953, published as 

"near Bakersfield."

Gage.--Water-stage recorder. Altitude of gage is 650 ft (from topographic map). Prior 

to Oct. 1, 1953, at site 11 miles downstream at different datum.

Average discharge.--61 years (1893-1906, 1908-56), 953 cfs (689,900 acre-ft per year).

Extremes. Maximum discharge during year, 3,130 cfs June 26 (gage height, 10.24 ft); minimum daily, 137 cfs Oct. 8, 9.

1893-1956: Maximum discharge, 36,000 cfs Nov. 19, 1950 (gage height, 14.2 ft, site 

and datum then In use); minimum daily, 74 cfs Sept. 19, 1948.

Remarks.--Records good. Plow regulated by Isabella Reservoir beginning in 1954 (see p.230 ), 

and three powerplants; many diversions above station for irrigation.

Cooperation.--Water-stage-recorder graph furnished by Pacific Gas & Electric Co., in connection with a Federal Power Commission project.

Revisions (water years).--WSP 861: Drainage area. WSP 1151: 1916.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

5.7 

6.0 

6.5 

7.0

125

180

315

500

7.5

8.0

9.0

10.0

730

1,040

1,780

2,840

Discharge, in cubic feet per second, water year October 1955 to September 1955

Day

1 

2

3

4

5

6

7

8

9

10

11

IK

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

187

176

174

166

164

151

131

137

139

*142

147

147

146

144

146

147

147

149

153

149

151

153

151

149

147

149

*149

151 

153

153

4,774

154

9,470

NOV.

153 

153

153

153

155

156

161

233

238

238

235

233

233

249

203

180

191

210

200

217

233

252

224

202

207

198

200

204

204 

207

6,075

202

12,050

Dec.

227 

366

352

252

235

295

524

512

385

544

500

406

374

357

343

326

306

300

291

276

276

294

415

576

562

556

562

532

420 

410

420

12,194

393

24,190

Jan.

468 

544

558

562

558

558

558

558

558

558

558

558

558

558

558

558

558

558

562

558

558

558

576

572

647

1,220

1.500

808

685 

640

626

19,454

628

38,590

Feb.

608 

598

590

536

572

640

576

572

567

567

567

572

572

700

784

790

784

754

748

748

754

754

760

802

802

766

754

754

675

19,666

678

39,010

Mar.

670 

748

705

742

754

705

705

766

*766

922

1,090

1,090

1,190

1,240

1,320

1.450

1,440

1,350

1,340

1,260

1,170

984

984

984

984

984

984

940

898 

991

964

31,120

1,004

61,730

Apr.

856 

838

720

715

736

736

725

670

665

695

705

725

621

585

576

576

576

630

685

685

705

695

725

695

832

1,250

1,270

1.550

1,340 

1,330

-----

23,912

797

47,430

May

1.340 

1,460

1,480

1,450

1,380

1,380

1,390

1,450

1,590

*1,590

1,590

1,590

1,590

1,580

1,530

1,550

1,630

1,630

1,660

1,670

1,710

1,700

1,610

1,550

1,550

1,550

1,570

1,580

1,590 

1,670

1,650

48,260

1,557

95,720

June

1,580 

1,550

1,550

1,570

1,590

1,680

1,690

1,780

1,880

1,870

1,790

1,720

1,770

2,170

2,300

2,200

2,320

2,320

2,310

2,320

2,370

2,280

2,280

2,340

2,340

1.160

2,360

2.490

2,420 

2,420

60,420

2,014

119,800

July

2.410 

2,210

2,070

2,100

2,210

2,150

2,140

2,140

2,190

2,200

2,160

2,160

2,160

2,160

2,170

2,090

2,050

2,040

2,040

1,990

1,960

2,250

2,100

2,100

1,970

1.950

2,010

2,170

1,970 

1,960

1,960

65,420

2,105

129,400

Aug.

1,950 

1,900

1,900

1,890

1,880

1,880

1,970

1,980

1,970

1,970

1,970

2,070

2,060

2,060

2,080

2.120

2,120

2,110

2,090

2,080

2,080

1,230

977

970

946

940

940

940

958 

958

964

51,953

1,676

103,000

Sept.

940 

922

916

*910

904

910

952

958

958

844

934

958

910

910

910

904

862

862

892

898

892

892

886

784

784

886

778

766

760 

760

... . .

26,442

881

52,450

Calendar year 1955: Max 1,810 Mln 137 Mean 506 Ac-ft 366,000

Water year 1955-56: Max 2,490 Mln 137 Mean 1,010 Ac-ft 732,800

* Discharge measurement made on this day.
234 TULARE LAKE BASIN

Tulare Lake in Kings County, Calif.

Location (revised). Lat 36°03'10", long 119°49'35", on west side of levee at "Navy White 

House" 2.2 miles southwest of Chatom Ranch and 9.5 miles south of town of Stratford.

Records available. March 1906 to September 1920 (Incomplete), February 1937 to September 

I3B1T

Gage. Water-stage recorder. Datum of gage is at mean sea level. March 1906 to September 

T920 staff gages at various sites and at different daturas. February 1937 to September 

1956 water-stage recorder or staff gage at various sites.

Extremes. Maximum elevation during year, 187.88 ft Feb. 10.

1906-56: Maximum elevation, 196.8 ft June 27, 28, 1941; lake dry or practically so 

during parts of 1906, 1914-16, 1919, 1937, 1946, 1950-53, 1955-56; lake dry during entire years 1920-22, 1924-36, 1947-49, 1954.

Lake elevation of June 27, 28, 1941, was highest known since about 1890.

Remarks. Tulare Lake receives water from Kings, Kaweah, and Tule Rivers during high-water 

periods and occasionally from Kern River, Deer Creek, and several small Intermittent 

streams. Most water stored during water year of 1956, came from Kaweah and Tule Rivers. 

Natural boundary of lake has been greatly altered by construction of levees and other 

reclamation work, and storage In 1956 was confined to 12 sections or approximately 

7,680 ceres. Elevation at lowest point of lake Is now about 180 ft above mean sea level.

Cooperation. Record furnished by Tulare Lake Basin Water Storage District. 

Elevation, In feet, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Dot. Nov.

_______

Dec.

-

-

-

-

-

_

-

-

-

-

-

-

-

-

-

.

-

-

_

-

_

-

-

180.00

180.50

180.80

181.00

181.30

181.60

181.90

1S2.20

Jan.

184.32

184.45

184.55

184.65

184.70

184.72

184.75

134.75

184.73

184.71

184.69

184.65

184.62

184.52

184.44

184.38

184.30

184.22

184.16

184.11

184.03

183.95

183.91

183.88

183.85

184.35

184.85

185.35

186 . 24

187.12

1S7.40

Feb.

187.56

187.66

187.75

187.80

187.82

187.82

1S7.S3

187.85

187,86

187.88

187.84

187.78

187.74

187.70

187.60

187.56

187.46

187.46

187.40

187.30

187.24

187.16

187.08

187.00

186.90

186.82

186.76

186.70

186.64

Mar.

166.61

186 . 57

186.45

186.39

186.20

186.18

186.10

186.00

185.92

185.80

185.64

135.56

185.48

185.36

185.24

185.10

184.96

184.82

1S4.62

184.45

184.36

184.25

184.14

184.00

183.80

183.65

183.50

183.45

183.30

183.10

182.98

Apr.

132.80

182.70

182.60

182.52

182.30

182.19

182.00

131.90

181.80

181.70

181.50

181.30

181.10

181.10

180.90

180.70

180.50

180.00

-

-

_

-

-

-

-

_

-

-

-

_

May June July Aug. Sept.

. Lake dry Oct. 1 to Dec. 23, Apr. 19 to Sept. 30.
TULARE LAKE BASIN 235

North Fork of Middle Fork Tule River near Springville, Calif.

Location. Lat 36°11', long 118°42', in sec. 23, T. 20 S., R. 30 E., on right bank 1 mile 

upstream from mouth, 2 miles downstream from Hossack Creek, and 7.8 miles northeast of 

Springville.

Drainage area. 39.5 sq mi.

Records available. November 1939 to September 1956. January 1909 to December 1912 at 

site 2 miles upstream, records not equivalent. Prior to October 1954, records for 

river and conduit published separately.

Gage.--Water-stage recorder. Altitude of gage is 2,850 ft (from topographic map).

Average discharge. 16 years (1940-56), 59.5 cfs (43,080 acre-ft per year), combined flow 

 of North Fork of Middle Fork Tule River and Pacific Gas & Electric Co. conduit.

Extremes (river only). Maximum discharge during year, 12,400 cfs Dec. 23 (gage height, 

12.47 ft, from floodmarks), from rating curve extended above 100 .cfs on basis of 

critical-depth determination; minimum daily, 0.2 cfs Oct. 15, 17, 18.

1939-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 10, 11, 1955. 

Revisions. The maximum discharge for the water year 1951 has been revised to about 

11,000 cfs Nov. 19, 1950 (gage height, 13.06 ft, from floodmarks), superseding figures 

published in WSP 1137 and 1215.

Remarks. Records fair except those above 250 cfs, which are poor. Records of daily discharge presented herein include flow of Pacific Gas & Electric Co. conduit which 

diverts 2.5 miles upstream from station; water is returned to North Fork of Middle Fork 

Tule River 1.5 miles downstream from station.

Cooperation.--Water-stage-recorder graph for the river and conduit furnished by Pacific 

Gas and Electric Co. in connection with a Federal Power Commission project.

Revisions. Revised figures of discharge, in cubic feet per second, for high-water period 

in the water year 1951, superseding those published in WSP 1137 and 1215, are given 

herewith:

Nov. 19-30, 1950. 

Dec. 1-14, 1950..

t800 

t200

t Average for period Indicated.

Month

Water year 195Q-51. .........

Cfs -days

10,862.7 

3,083.1

Minimum

0.7 

9.1 

.5 

.6

Mean

362 

99 5 

4:5.4: 

44.8

Runoff

Inches

10.23 

2.90

Acre-feet

21,550 

6,120 

32,910 

32,470

Discharge, In 'cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Jfe-ft

Oct.

12

I?

12

13

13

13

*13

14

13

12

14

14

12

12

12

12

12

12

13

14

14

14

14

12

12

12

14

13

13

12

13

397

12.8

787

Nov.

13

14

13

13

13

13

13

13

13

13

13

13

15

21

17

17

19

19

21

21

30

21

18

17

16

17

18

19

17

16

496

16.5

984

Dec.

56

33

24

20

*19

108

56

37

145

5S

44

40

38

36

33

31

29

27

26

26

26

142

*5,540

1,080

403

309

248

180

129

104

90

9,137

295

18,120

Jan.

76

66

60

54

66

*83

79

75

71

69

69

67

66

66

71

89

70

65

63

65

63

61

81

71

774

354

378

186

127

107

96

3,688

119

7,320

Feb.

85

87

84

82

79

80

77

75

72

72

72

74

73

72

69

66

64

62

60

59

58

57

69

61

59

56

55

BT

57

1,990

68.6

3,950

Mar.

59

64

*63

65

64

61

60

60

64

68

70

67

68

68

68

71

73

78

81

79

91

90

92

91

89

96

96

96

*99

99

1OO

2,390

77.1

4,740

Apr.

100

96

92

89

88

90

*92

97

100

105

109

107

103

97

100

105

106

106

104

106

108

111

119

125

130

147

TU

136

136

135

3,233

109

6,510

May

135

140

140

195

175

165

158

152

164

157

152

147

138

*134

T34

136

141

152

168

165

181

198

204

20T

186

179

178

171

160

158

157

5,021

162

9,960

June

149

134

137

137

131

127

126

123

123

122

117

112

107

*105

100

95

92

88

87

85

82

78

72

70

66

63

61

61

58

56

2,974

99.1

5,900

July

53

BT

50

49

47

46

44

43

42

41

*41

40

39

38

37

37

36

36

37

37

36

35

35

34

33

34

35

34

31

30

2_9

1,210

39.0

2,400

Aug.

30

29

28

23

28

28

26

26

25

25

25

25

25

24

24

24

24

23

23

23

23

22

23

*23

23

23

23

23

23

22

22

763

24.6

1,510

Sept.

2220"

20

20

20

20

20

20

20

20

20

20

20

19

19

19

19

19

19

20

20

19

19

18

IS

18

18

18

18

18

580

19.3

1,150

Calendar year 1955: Max 5,540 Mln 11 Mean 56.8 Ac-ft 41,110

Water year 1955-56: Max 5,540 Mln 12 Mean 87.2 Ac-ft 63,330

* Discharge measurement of river made on this day.

Note.--Ho gage-height record at river gage Feb. 26 to Mar. 1, Mar. 6-28, Aug. 24 to Sept. 7; 

charge computed on basis of records for Marble Fork Kaweah River.
236 TULARE LAKE BASIN

Tule River near Porterville, Calif.

Location. Lat 36°05' , long 118°55', NW£ sec. 25, T. 21 S., R. 28 E., near right bank on 

downstream side of highway bridge, 1 mile upstream from South Fork and 6 miles east of 

Porterville.

Drainage area. 261 sq mi.

Records available. May 1901 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 580 ft (from topographic map). Prior to 

Oct. 1, 1930, staff gage at site 75 ft downstream at different datum.

Average discharge . 55 years, 143 cfs (103,500 acre-ft per year).

Extremes.--Maximum discharge during year, 24,200 cfs Dec. 23 (gage height, 11.80 ft), from 

rating curve extended above 1,600 cfs on basis of slope-area determination of peak flow; 

no flow for part of Oct. 3.

1901-56: Maximum discharge, 25,500 cfs Nov. 19, 1950 (gage height, 13.75 ft), from 

rating curve extended above 750 cfs on basis of slope-area determination of peak flow; 

no flow during parts of 1934-35, 1947, 1950, 1955.

Revisions. The figures of maximum discharge observed for some water years have been 

revised, as shown in the following table. They supersede figures published in the 

water-supply papers indicated.

WSP

299

299

299,843

299

299,843

299

299

299,843

299,843

299

391,843

441,843

461

551

651

Water 

year

1902

1903

1904

1905

1906

1907

1908

1909

1910

1911

1914

1916

1917

1922

1927

Date

Apr.

Jan.

Mar.

Mar.

Mar.

Apr.

Feb.

Jan.

Dec.

Jan.

Jan.

Jan.

Dec.

Feb.

Feb.

7,

28,

23,

19,

15,

2,

22,

14,

8,

31,

25,

17,

24,

11,

18,

1902

1903

1904

1905

1906t

1907

1908

21, 1909t

1909

1911

1914

1916

1916

1922

1927

Discharge 

(cfs)

3,400

3,800

2,560

960

9,000

8,260

1,270

7,720

8,440

3,340

11,400

12,000

5,120

4,300

6,400

Gage height 

(feet)

7.2

7.6

t6.3

4.2 tio.o

6.0

4.7

t9.5

t9.8

7.0

10.8

11.0

8.2

7.7

10.0

t Revised.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Diversions for irrigation of about 7,000 acres above station (from 1950 Census of Irrigation map). Power is developed on Middle Fork and tributaries. Records of chemical 

analyses for the water year 1956 are given in WSP 1453,

Revisions (water years).--WSP 881: 1902-9 (yearly summaries only). WSP 1395: Drainage 

area.Revised figures of discharge, in cubic feet per second, for the water year 1913, 

superseding those published in WSP 361,are given herewith:

Date

1913

Jan. 15

16

17

18

19

20

21

22

23

24

25

Discharge

69

96

127

54

49

48

47

45

43

39

39

Date

1913-Con.

Jan. 26

27

28

29

30

31

Feb. 1

2

3

4

5

Discharge

39

39

39

40

41

41

42

42

42

42

42

Date

1913-Con.

Feb. 6

7

8

9

10

11

12

13

14

15

16

Discharge

42

42

43

43

43

43

43

43

43

43

43

Date

1913-Con.

Feb. 17

18

19

20

21

22

23

24

25

Discharge

42

41

40

39

39

41

43

84

165

Month

Calendar year 1913. .......................

March 1943. .................................

December 1946. ..............................

Maximum

385

-

-

Minimum

39

1

-

-

Mean

48.7

-

- 1

Runoff In 

acre-feet

35,300

tt92,440

tt7,960

tt Corrected.
TULARE LAKE BASIN

Tule River near Porterville, Calif.--Continued 

Discharge, in cubic feet per second, water year October 1955 to September 1956

237

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

~7Y 0.1

.'l

.1 *.l

;1!i

.1

.3

.3

.4

.4

.5

.5

.4

.5

.6

.7

.7

.8

1.1

1.1

1.1 

1.3

1.7

2.0

3.4

4.4

3.7

3 4 

4^2

34.3

1.11

68

Nov.

4.6

4.6

5.5

*5.5

5.9

5.9

5.9

6.4

5.5

5.5

5.7

6.6

7.1

30

29

24

26

28

29

34

46

57

38 

31

29

27

28

29

*28

28

615.7

20.5

1,220

Dec.

Ill

152

70

55

15

399

*323

129

486

244

152

118

102

92

84

78

70

68

63

59

60

376

*9.090 

2,230

1,260

1,100

1,180

840

608

476

421

20,541

663

40,740

Jan.

362

323

290

265

245

*230

220

206

197

188

186

188

176

172

174

248

204

188

178

180

192

184

380 

388

5,080

*2,110

2,380

1,250

894

719

626

16,625

556

52,970

Feb.

540

470

450

a420

a405

a595

a580

a565

3350

3535

3525

a510

a295

a280

a265

3255

3240

a225

a210

3195

*184

184

251 

291

254

245

212

208

*200

8,699

500

17,250

Mar.

193

195

202

210

215

200

190

188

190

200

202

198

190

186

177

174

TT§

184

188

188

193

195

198 

208

212

*220

220

210

208

205 

205

6,123

198

12,140

Apr.

245

228

210

198

202

208

205

205

208

205

242

569

575

294

265

504

500

517

504

510

504

297

500 

291

504

575

498

408

585

*581

8,751

291

17,520

May

561

545

369

550

502

448

416

385

506

520

484

475

421

577

557

358

542

558

561

545

565

594

416 

421

585

555

545

*551

507

500

288

12,145

592

24,090

June

'260 269

240

251

226

205

200

190

184

179

170

154

150

146

144

156

125

119

114

110

112

105

95 

90

84

82

76

75

69

64

4,402

147

8,750

July

58

55

*54

55

50

48

46

45

45

41

59

57

*57

56

51

30

52

51

31

31

35

30

26 

24

24

24

21

20

18

17

14

1,079

34.8

2,140

Aug.

12

*13

14

13

12

13

13

13

13

13

11

11

10

10

10

10

10

10

10

9.2

*8. 8

9.2

8.4 

7.8

7.0

6.8

6.5

6.5

6.5

7.0

*7.0

311.7

10.1

618

Sept.

7.0

6.5

6.5

6.5

6.8

6.8

6.5

6.5

6.5

6.2

5.4

5.4

5.4

5.4

5.8

5.8

6.5

6.5

6.5

8.0

9.2

8.8

8.8 

8.0

6.5

6.2

5.8

5.8

5.8

5.8

197.2

6.57

591

Calendar year 1955: Max 9,090 Min 0.1 Mean 120 Ac-ft 86,680

Water year 1955-56: Max 9,090 Min 0.1 Mean 217 Ac-ft 157,700

orth Bridge.
238 TULARE LAKE BASIN

South Fork Tule River near Success, Calif.

Location. Lat 36°02', long 118°51', in SW£ sec. 4, T. 22 S., R. 29 E., on left bank 

4 miles southeast of Success and 5 miles upstream from mouth.

Drainage area. 109 sq ml (revised).

Records available. June 1930 to November 1954, February to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 770 ft (from topographic map). Prior to 

June 26, 1951, at site 0.4 mile downstream at different datum.

Average discharge.--24 years (1930-54), 42.8 cfs (30,990 acre-ft per year); median of 

yearly mean discharges, 31.5 cfs (22,800 acre-ft per year).

Extremes. Maximum discharge during period, 204 cfs May 4 (gage height, 4.84 ft); minimum, 

0.3 cfs Sept. 4.

1930-54, 1956: Maximum discharge, 7,100 cfs Nov. 19, 1950 (gage height, 8.35 ft at 

site and datum then in use; 11.36 ft at present site and datum), from rating curve 

extended above 1,600 cfs on basis of slope-area determination of peak flow; no flow at 

times during each year except 1938, 1943, 1945 and period February to September 1956.

Revisions. Figures of maximum discharge for the water year 1952 and 1953 have been 

revised to 1,280 cfs Jan. 25, 1952 (gage height, 7.15 ft) and 818 cfs Apr. 27, 1953 

(gage height, 6.43 ft), superseding figures published In WSP 1245 and 1285, respectively.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Diversions for irrigation of about 1,600 acres, approximately 1,500 acres of which are 

downstream from station.

Revisions.--The figures of peak discharge for the water years 1952-53 have been revised as 

shown below, superseding those published in WSP 1245 and 1285.

Revised peak discharge.--1951-52: Dec. 30 (3:30 a.m.) 974 cfs (6.69 ft); Jan. 25 

(6 a.m.) 1,280 cfs (7.15 ft); Mar. 15 (4 p.m.) 775 cfs (6.35 ft).

1952-53: Jan. 13 (9 p.m.) 785 cfs (6.37 ft); Apr. 27 (9:30 p.m.) 818 cfs (6.43 ft).

Rating table, Feb. 1 to Sept. 3O, 1956 (gage height, In feet, and 

discharge, In cubic feet per second)

3.0

3.1

3.2

3.3 

3.5

0.4

1.1

2.7

5.3

14

3.7 

4.0 

4.3 

4.7

Discharge, In cubic feet per second, February to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct. Nov. Dec.

till

Jan.

t3,100

t548

Feb.

164

145

135

126

119

109

102

97

90

86

82

79

78

75

73

68

66

66

62

60

59

*58

80

93

73

87

73

73

70

2,548

87.9

5,050

Mar.

66

66

68

69

68

64

60

60

60

60

60

59

57

57

56

56

56

56

57

56

56

57

57

57

58

59

*58

56

54

52

57

1,832

59.1

3,630

Apr.

79

68

63

62

65

66

68

65

62

60

71

94

103

89

86

94

91

94

93

94

91

87

82

79

78

100

133

106

102

97

2,522

84.1

5,OOO

May

90

86

83

135

112

104

*98

94

112

112

112

119

106

98

93

87

84

83

82

80

78

75

74

74

71

69

68

65

*63

59

58

2,724

87.9

5,400

June

54

53

50

48

50

47

44

43

40

39

38

36

34

32

31

30

29

28

27

26

25

24

23

22

21

21

20

19

18

18

990

33.0

1,960

July

17

16

*16

15

14

14

14

12

11

10

9.4

9.0

8.6

8.2

7.8

7.4

7.4

6.5

7.4

6.1

6.5

4.8

4.3

4.0

3.2

3.5

3.2

3.2

3.2

2.7

2.2

257.6

8.31

511

Aug.

2.4

*2T4

2.4

2.4

2.4

2.2

2.1

2.1

1.4

1,3

1.0

1.0

1.3

1.7

1.0

.5

.6

.5

.6

*.6

.5

.5

.5

.4

.4

.4

.5

.6 *.6

.6

.6

35.5

1.15

70.4

Sept.

0.8

.5

.4

.4

.4

.4

.6

.6

.5

.5

.8

.8

.9

1.3

1.7

2.1

1.4

1.0

1.0

1.1

1.3

2.2

2.5

2?2

2.1

2.2

2.2

1.7

1.7

1.9

37.2

1.24

73.8

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft

* Discharge measurement made on this day. 

t Result of discharge measurement.

Note. No gage-height record June 15 to July 2; discharge estimated on basis of recorded range In 

stage and records for station near Portervllle.
TULARE LAKE BASIN 239

Tule River at Worth Bridge,near Porterville, Calif.

Location.--Lat 36°02'55", long 118°56'15", in NE^NW^ sec. 3, T. 22 S., R. 28 E., on left 

bank just downstream from highway bridge, 2 miles downstream from South Pork Tule River 

and 5 miles east of Porterville.

Drainage area. 395 sq mi.

Records available. October 1953 to September 1956 in reports of Geological Survey. October 1944 to September 1956 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Altitude of gage is 520 ft (from topographic map). Prior to 

June 17, 1954, on bridge pier at same datum.

Extremes.--Maximum discharge during year, 27,000 cfs Dec. 23 (gage height, 21.65 ft), from 

rating curve extended above 1,400 cfs_on basis of studies of upstream peaks; no flow 

during October.

1953-56: Maximum discharge, that of Dec. 23, 1955; no flow during parts of 1954-55.

Remarks. Records good except those for periods of indefinite stage-discharge relation or 

doubtful gage-height record, which are fair. Diversions for irrigation of about 200 

acres between stations near Porterville and at Worth Bridge. Water diverted by Pioneer 

ditch above station for irrigation of about 1,700 acres downstream.

Discharge, In cubic feet per second, water year October 1955 to September 19513

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

31

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0

0

0

Nov.

0*1 *T7f

3.2

4.0

4.4

5.4

4.9

5.4

4.9

3.6

3.2

4.9

5.9

13

17

16

29

26

21

31

51

85

5T

39

29

21

19

*22

25

26

572.1

19.1

1,130

Dec.

132

222

95

73

53

586

*483

217

584

309

209

171

147

135

120

109

99

92

85

79

79

410

*15,600

3,020

1,670

1,380

 1,440

1,010

*770

556

497

28,432

917

56,390

Jan.

448

412

385

368

353

341

329

315

305

299

291

291

283

279

275

331

319

291

283

281

297

291

515

570

*4.170

*2,610

3,680

1,550

1,080

866

745

22,853

737

45,330

Feb.

641

569

524

484

470

445

417

398

380

371

359

350

d340

d330

d318

d305

d290

d275

d262

*d255

d255

d250

*d322

392

345

340

300

295

282

--

10,564

364

20,950

Mar.

270

262

260

262

265

255

242

242

242

244

246

242

*232

226

224

220

22?

226

238

246

248

252

255

260

268

275

Tj$

265

262

260

262

7,748

250

15,370

Apr.

315

300

282

265

268

278

278

278

278

265

290

395

420

368

348

380

380

395

395

404

404

398

404

404

414

473

582

536

e487

e478

11,162

372

22,140

May

e451

e431

e452

e685

576

513

*486

450

666

740

693

730

630

540

540

486

486

468

486

442

434

459

513

513

504

426

402

370

*342

330

521

15,565

502

30,870

June

300

231

282

268

276

263

251

242

230

220

218

206

194

186

186

176

161

152

144

142

142

131

120

112

105

99

91

84

74

64

5,413

180

10,740

July

56

 50

47

42

36

32

30

31

31

26

24

20

18

17

14

11

11

9.9

9.4

8.8

9.9

8.3

6.7

5.9

5.5

5.7

5.7

5.7 5.3'

5.3

5,1

593.2

19.1

1,180

Aug.

5.3

 5.7

5.5

5.3

5.1

5.3

5.9

6^5

5.3

5.1

5.3

5.5

5.1

5.1

5.5

5.1

4.9

4.9

5.1

*4.5

4.5

4.5

4.7

4.5

4.2

*j£

4.0

4.5

4.9

5.1

4.5

155.4

5.01

308

Sept.

4.4

4.0

4.4

4.2

4.2

*4.2

3.8

4.2

4.0

3.7

£4375

3.2

3.3

3.5

3.5

4.2

3.8

3.7

4.4

4.7

471

4.4

4.0

3.3

4.0

3.3

3.3

3.3

3.3

114.7

3.82

228

Calendar year 1955: Max 13,600 Mln 0 Mean 152 Ac-ft 110,100

Water year 1955-56: Max 13,600 Mln 0 Mean 282 Ac-ft 204,600

Peak discharge (base, 800 efs). Dee. 6 (7:30 p.m.) 1,860 cfs (15.35 ft); Dec. 9 (9:30 a.m.) 1,260 

cfs (14.83 ft); Dec. 23 (5:30 a.m.) 27,000 cfs (21.65 ft); Dec. 26 (9:30 p.m.) 1,770 cfs (13.91 ft); 

Jan. 25 (3:30 p.m.) 12,200 cfs (17.07 ft); May 4 (l p.m.) 908 cfs (I2.08.ft); May 9 (11:45 p.m.) 910 

cfs (12.09 ft).

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph.

e Stage-discharge relation Indefinite; discharge computed on basis of natural recession and engineers ' readings.
240 TULARE LAKE BASIN

Marble Pork Kaweah River at Potwisha Camp, Calif.

Location.--Lat 36°31'10", long 118°48'10", in SE$ sec. 23, T. 16 S., R. 29 E., on left 

bank 0.1 mile north of Potwisha Camp and 0.3 mile upstream from confluence with Middle 

Pork Kaweah River.

Drainage area. 50.6 sq mi.

Records available.--March 1950 to September 1956. Prior to October 1954, records for 

river and conduit published separately.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 2,150 ft (from topographic map).

Average discharge. 6 years, 110 cfs (79,640 acre-ft per year), combined flow of Marble 

Pork Kaweah River and Marble Pork Kaweah River No. 3 conduit.

Extremes (river only) . Maximum discharge during year, 12,500 cfs Dec. 23 (gage height, 

13.4 ft), from rating curve extended above 1,100 cfs on basis of slope-area determination of peak flow; minimum daily, 0.2 cfs Dec. 13, 14; Aug. 2-7.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 5-15, Oct. 24-28, 

.1953.

Remarks. Records good except those below 10 cfs, which are fair. Records of daily discharge presented herein include flow of Marble Pork Kaweah River No. 3 conduit which 

diverts from left bank of Marble Pork 0.3 mile above station; water is returned to 

Kaweah River 2.7 miles downstream from confluence of Marble and Middle Porks.

Cooperation.--Water-stage-recorder graph and 11 discharge measurements for the river and 

water-stage-recorder graph and 12 discharge measurements for the conduit; furnished by 

Southern California Edison Co.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3*1

3.7

3.7

3.7

3.9

3.9

3.7

3.5

3.5

*3.5

3.7

3.7

3.5

3.5

3.7

3.5

3.3

575

3.7

3.9

3.9

3.9

3.8

3.8

3.6

3.6

*3 . 8

3.8

3.8

3.6

3.4

114.0

3.68

226

Nov.

3.6

378

3.8

3.6

3.7

3.7

3.6

3.6

3.6

3.6

3.6

3.6

4.9

8.5

7.3

7.0

8.2

7.1

10

12

21

I?

10

9.2

10

11

13

15

15

14

239.0

7.97

474

Dec.

24

20

14

14

14

48

*36

26

121

48

37

*35

35

32

30

27

26

24

25

27

27

680

'5,700

1,820

858

703

465

316

266

224

201

11,923

385

23,650

Jan.

187

172

157

146

138

132

125

117

111

108

109

118

107

102

112

173

119

108

102

102

98

94

121

105

455

377

554

222

175

155

158

4,797

155

9,510

Feb.

125 Tie

114

110

109

102

99

98

96

96

*96

98

99

99

96

91

91

90

88

88

87

88

94

74

77

82

77

77

78

2,737

94.4

5,430

Mar.

77

80

85

*88

86

81

*78

78

79

82

88

83

83

86

88

94

100

102

110

106

121

130

141

168

179

181

168

172

*186

*194

187

5,581

116

7,100

Apr.

160

157

129

127

157

155

175

194

214

209

187

166

152

156

140

158

162

156

154

172

188

195

257

*257

272

278

243

226

237

243

5,596

187

11,100

May

253

287

348

*508

558

320

297

272

290

247

249

230

206

202

237

297

331

382

425

375

498

615

691

SIT

495

*528

512

469

484

505

480

12,000

387

23,800

June

466

447

455

465

419

408

451

458

460

453

423

418

406

367

302

298

314

*329

328

296

298

305

315

297

274

281

298

*302

280

241

10,792

360

21,410

July

194

175

162

162

166

165

157

154

155

143

128

119

96

92

88

91

89

92

97

144

162

162

142

159

106

135

96

*85

71

64

60

5,891

126

7,720

Aug.

56" 57

43

40

57

35

34

34

32

30

29

27

25

25

23

22

21

20

19

18

17

16

15

15

14

14

13

15

15

12

1?

775

25.0

1,540

Sept.

11

TT

10

10

*9.8

9.9

9.5

8.7

*8.4

8.0

8.0

7.8

7.5

7.5

7.5

7.5

6.9

6.7

6.9

7.5

8.1

7.6

6.8

6.5

6.2

6^0

*6.2

6.2

6.2

6.2

235.9

7.86

468

Calendar year 1955: Max 5,700 Min 3.3 Mean 101 Ac-ft 73,190

Water year 1955-56: Max 5,700 Min 3.3 Mean 155 Ac-ft 112,400

Peak discharge (base, 450 cfs].--Dec. 23 (5:30 a.m.) 12,500 cfs (13.4 ft); Dec. 26 (2:30 p.m.) 

1,190 cfs (6.59 ft); Jan. 25 (2 p.m.) 840 cfs (6.00 ft); May 4 (5 a.m.) 625 cfs (5.57 ft); May 25 

(8 p.m.) 906 cfs (6.11 ft).

* Discharge measurement of river made on this day.
TULARE LAKE BASIN 241

North Pork Kaweah River at Kaweah, Calif.

Location. Lat 36 e 29', long 118°55', in SE£ sec. 34, T. 16 S., R. 28 E. , on left bank

1.2 miles upstream from Mannikin Creek, 1.5 miles north of Kaweah, and 3 miles upstream 

from mouth.

Drainage area. 128 sq mi.

Records available. October 1910 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,027.7 ft above mean sea level (riverprofile survey). Prior to Oct. 26, 1933, staff gage at site 1 mile downstream at different datum.

Average discharge. 45 years (1911-56), 101 cfs (73.120 acre-ft per year); median of yearly 

mean discharges, 82 ofs (59,400 aore-ft per year).

Extremes. Maximum discharge during year, 21,500 cfs Dec. 23 (gage height, 14.1 ft, from 

profile of floodmarks), from rating curve extended above 3,200 cfs on basis of slope-area 

determination of peak flow; minimum, 3.1 cfs Oct. 1.

1910-56: Maximum discharge, that of Dec. 23, 1955; no flow for many days during 

July to October 1924.

Revisions. The maximum discharge for the water year 1951 has been revised to 10,800 

cfs Nov. 19, 1950 (gage height, 10.85 ft), superseding figure published in WSP 1215.

emarks.--Records good except those for periods of no gage-height record, which are fair, 

iversions for irrigation of about 60 acres above station.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.2

1.3 

1.5 

1.7 

1.9 

2.1 

2.4 

2.8

3.2

3.6 

4.1 

5.0 

6.0 

7.0 

9.0 

11.0

128

225

435

1,010

1,940

3,150

6,500

11,200

1.7 

1.9 

2.1 

2.5

6.5

7.5

11

17

28

45

92

2.9 

3.3 

4.0 

4.9 

5.8 

6.9 

8.0

165

270

570

1,100

1,830

3,020

4,700

Discharge, In.cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac- ft

Oct.

3.5

473

4.3

4.3

4.3

*4.4

4.5

4.3

4.2

4.3

4.4

4.6

4.6

4.5

4.4

4.4

4.3

4.3

4.6

4.9

5.0

5.0

5.1

5.1

4.9

4.6

4.9

5.0

5.1

5.1

e o J . ^

142.4

4.59

282

Nov.

5.2

5.3

5.6

5.5

5 5

5.6

5.5

*5.1

575

5.5

5.5

5.6

6.2

18

12

11

14

14

14

18

28

29

17

14

12

12

13

14

15

15

341.6

11.4

678

Dec.

40

46

26

19

17

78

85

41

243

87

58

48

44

39

36

33

30

28

30

33

38

821

^O.OOO

4,500

2,000

1,300

1,100

950

650

500

430

23,350

753

46,310

Jan.

350

310

270

250

230

210

200

180

*169

160

150

150

155

150

165

260

210

180

160

160

155

160

300

230

1,600

1,050

1,110

800

590

454 

386

10,904

352

21,630

Feb.

358

318

298

278

270

249

234

228

210

208

202

202

202

192

188

175

165

163

155

149

141

*143

276

237

200

200

179

177

175

-

6,172

213

12,240

Ma'r.

171

171

179

179

175

165

157

155

159

167

175

161

157

161

153

161

169

167

179

169

183

188

198

219

228

231 222"

213

222

222 

225

5,681

183

11,270

Apr.

234

205

185

175

179

190

198

202

*219

234

234

261

252

213

213

243

249

249

240

252

246

240

252

258

267

342

382

32T

318

322

7,376

246

14,630

May

306

29E

314

637

458

394

386

*358

545

430

426

378

330

314

306

302

306

302

314

286

302

314

322

318

278

267

261

243

228

222

216

10,361

334

20,550

June

202

198

185

*183

181

169

161

153

145

141

135

125

120

115

111

110

108

105

89

86

86

81

77

71

68

67

*64

63

60

59

3,518

117

6,980

July

56

55

53

51

46

44

43

39

38

37

36

36

34

33

32

*31

30

28

27

27

26

25

23

23

23

23

*22

20

19

18

17_

1,015

32.7

2,010

Aug.

17

16

16

16

17

16

16

15

16

15

14

14

14

*14

13

12

11

11

9.9

9.7

9.5

9.5

9.9

10

13

13

13

13

12

12 

12

409.5

13.2

812

Sept.

~9.9 11

9.5

8.8

8.5

8.2

*8.7

8.5

8.5

8.4

8.4

8.7

8.8

8.5

8.4

8.4

8.2

6.8

178

7.0

8.4

9.2.

9.0

8.5

8.3

.9

.9

.8

.9

.8

252.7

8.42

501

Calendar year 1955: Max 10,000 Mln 2.8 Mean 124 Ac-ft 13,790

Water year 1955-56: Max 10,000 Mln 3.5 Mean 190 Ac-ft 137,900

Peak discharge (base. 700 efs) . Dee. 23 (time unknown) 21,500 ofs (14.1 ft); Jan. 25 (time and 

discharge unknown); May 4 (7 a.m.) 942 cfs (4.67 ft).

Discharge measurement made on this day. 

Note. No gage-height record Dec. 23 to Jan. 8, 

of records for Kaweah River near Three Rivers .

Jan, I0-'f.£, 28, 29; discharge estimated on basis
242 TULARE LAKE BASIN 

Kaweah River near Three Rivers, Calif.

Location. Lat 36°24', long 118e 57", in SWi sec. 33, T. 17 S., R. 28 E., on left bank 

 2.5 miles downstream from South Fork and 3 miles southwest of Three Rivers Post Office.

Drainage area. 520 sq mi, approximately. 

Records available.--April 1903 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 611.1 ft above mean sea level (river-profile 

survey). Prior to July 1, 1929, staff gage and July 1, 1929, to Jan. 31, 1936, waterstage recorder, at site 2 miles upstream at different datum. Feb. 1, 1936, to Aug. 24, 

1939, water-stage recorder at present site at datum 2.68 ft higher and Aug. 25, 1939, 

to July 9, 1951, at datum 1.68 ft higher.

Average discharge.--53 years, 571 cfs (413,400 acre-ft per year).

Extremes. Maximum discharge during year, 80,700 cfs Dec. 23 (gage height, 22.24 ft), from 

rating curve extended above 3,500 cfs on basis of slope-area determination of peak flow; 

minimum, 15 cfs Oct. 12, 19.

1903-56: Maximum discharge, that of Dec. 23, 1955; minimum, 8.5 cfs Sept. 19, 1934.

Remarks. Records good except those for period of doubtful gage-height record, which are 

fair. Diversions for irrigation of about 460 acres above station. Power is developed 

on Middle and East Forks. Records of chemical analyses for the water year 1956 are 

given in WSP 1453.

Revisions (water years). WSP 881: 1904-9 (yearly summaries only). WSP 1121: 1918-21.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

23 

22

22

*22

23

24

23

21

2T

22

22

22

26

23

23

24

22

21

21

24

23

29

5? 

22

22

23 

23

28

24

24

24

719

23.2

1,430

Nov.

24 

tt

24

27

*26

26

27

26

24

24

26

28

32

77

71

57

71

72

88

108

138

~97 160

82

77

77 

81

88

91

88

1,861

62.0

3,690

Dec.

172 

304

153

118

112

436

484

230

1,050

446

300

256

238

221

207

194

182

172

165

170

179

2,570

«42.800 

15,100

8,210

5,590 

4,840

3,330

2,400

1,810

1,660

94,099

3,035

186,600

Jan.

1,400 

1,200

1,110

1,060

1,010

980

*935

899

882

SlO

761

747

761

740

768

1,000

866

768

761

761

76S

1,T§B" 726

917

7.580

 4,430 

5,020

3,180

2,300

1,700

1,400

47,400

1,529

94,020

Feb.

1.270

1,160

1,060

1,050

1,010

936

*900

864

822

786

76O

755

745

740

720

690

671

662

648

644

630

626

750 

710

626

617 

590

 590

574

------

------

22,626

780

44,880

Mar.

574

571

582

3595

d595

3600

d 610

d610

d620

d625

d630

635

635

640

626

635

658

653

*690

671

715

750

780 

858

918

948 

936

930

967

1,000

*1,03Q

22,290

719

44,210

Apr.

1,030 

921

861

835

155

894

949

1,000

1,110

1,180

1,170

1,200

1,150

994

949

1,040

1,040

1,030

986

1,070

1,100

1,110

1,300 

1,440

1,560

1,830 

1,760

1,450

1,410

*1,410

34,634

1,154

68,700

May

1,430 

1,550

1,830

2,970

2,240

1,970

1,850

1,660

2,130

1,750

1,640

1,530

1,320

1.250

1,810

1,560

*1,830

2,090

2,500

2,130

2,680

3,190

3.420

3,270

2,700

2,620 

2,730

2,480

2,460

2,560

*2,470

67,100

2,165

133,100

June

2.3QO 

2,290

2,100

2,190

2,030

1,880

1,970

2,OOO

2,060

2,080

1,980

1,880

1,860

1,720

1,490

1,340

1,360

1,410

1,430

1,3OO

1,270

1,280

1,310 

1,310

1,200

1,160 

1,220

*1,250

1,160

1.080

48,940

1,631

97,070

July

'5CT 909 

748

718

712

700

688

670

652

*616

577

544

506

478

462

456

440

*445

SOO

652

723

729

706 

634

577

652 

*616

550

456

401

365

18,686

603

37,060

Aug.

340 

3735"

276

250

237

226

 210

206

196

*189

179

172

163

*157

151

148

145

137

128

123

123

115

108 

104

104

101 

99

97

94

*9~0~ 90

5,063

163

10,040

Sept.

SB- 90

80

78

78

76

74

72

69

69

69

69

65

64

60

60

58

54

52

54

62

60

55 

52

51

49 

4?

49

51

49

1,904

63.5

3,780

Calendar year 1955: Max 42,800 Mln 21 Mean 626 Ac-ft 452, SOO

Water year 1955-56: Max 42,800 Mln 21 Mean 998 Ao-ft 724,600

eak discharge (base. 2.200 efs). Dee. 23 (8 a.m.) 80,700 cfa (22.24 ft); Dec. 26 (6 p.m.) 7, 

(8.60 ft); Jan. 25 (3 p.m.) 16,500 cfs (11.36 ft); May 4 (8:30 a.m.) 3,770 cfs (7.07 ft); Ma 

a.m.) 2,500 cfs (8.27 ft); May 23 (11:30 p.m.) 4,140 cfs (7.29 ft).

Peak discharge (base. 

of FT

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph.

,000 

May 9
TULARE LAKE BASIN 243

South Fork Kings River near Cedar Grove, Calif.

Location.--Lat 36°48'25", long 118°44'55", In NW£ sec. 8, T. 13 S., R. 30 E., on right 

bank 0.3 mile downstream from Grizzly Creek and 4.5 miles west of Cedar Grove.

Drainage area.--409 sq ml.

Records available. November 1950 to September 1956.

Gage. Water-stage recorder. Datum of gage is 4,157.7 ft (from river-profile survey).

Average discharge.--5 years (1951-56), 688 cfs (498,100 acre-ft per year).

Extremes. Maximum discharge during year, 13,900 cfs Dec. 23 (gage height, 16.30 ft), 

from rating curve extended above 3,200 cfs on basis of slope-area determination of 

peak flow; minimum, 55 cfs Nov. 12, 13.

1950-56: Maximum discharge, that of Dec. 23, 1955; minimum, 39 cfs Jan. 14, 1954.

Remarks. Records fair. No regulation or diversion above this station.

Rating tables water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 30

6.3 50

6.6 86

7.0 160

7.5 308

8.0 520

8.5 810

9.0 1,190

9.5 1,660

6.5 

7.0 

7.5 

8.0 

8.5 

9.0

105

198

345

550

860

1,270

9.5

10.0

11.0

12.0

14.0

1,860

2,660

4,660

6,610

10,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24 

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

67

55

64

65

65

64

64

64

64

64

62

61

61

65

64

62

61

61

61

62

62 

62

60 

60

*60 

60

60

59

55

59

1,932

62.3

3,830

Nov.

59

59

59

59

59

60

60

59

59

59

58

5758"

60

70

79

89

89

100

104

~9T 113

98

96 

98

96 

100

 100

98

95

2,344

78.1

4,650

Dec.

115

101

TT5

110

118

184

172

170

240

205

192

184

184

177

174

165

162

156

207

172

170

1,540 

 9,300

4,940 

3,000

2,000 

1,500

1,200

900

800

700

29,353

947

58,220

Jan.

600

550

480

440

420

400

380

360

350

330

330

340

330

330

370

500

400

350

340

330

320

400

350 

780

750" 800 

650

550

500

450

13,830

446

27,430

Feb.

350" 400

350

350

350

320

310

298

310

310

310

310

310

310

 310

290

290

280

280

290

280

280 

300

290 

280

280 

280

270

260

------

8,878

306

17,610

Mar.

260

270

280

 28Q

280

265

256

253

265

274

283

283

283

286

289

304

324

334

366

370

408

452 

496

590 

672

708 

678

727

818

860

13,067

422

25,920

Apr.

755

636

565

528

53?

600

720

818

970

1,080

994

874

776

690

648

648

642

636

642

734

846

970 

1,240

1,400 

1,420

1.440 

1,250

1,130

1,080

1,150

26,414

880

52,390

May

1,270

1,450

 1,640

1,740

1,650

1,540

1,440

1,330

1,270

1,140

1,080

994

'530" 923

1,130

1,350

1,540

1,640

1,780

1,690

2,030

2,960 

4,060

4.100 

2,980

2,960 

3,300

3,080

*3,260

3,500 

3 ' 500

63,257

2,041

125,500

June

3,300

3,200

3,140

3,180

3,000

2,780

2,960

3,300

3,740

4,000

3,720

3,660

3,820

3,460

2,800

2.530

2,740

2,960

3,060

, 2,780

2,660

2,740 

3,040

2,980 

2,840

2,940 

3,060

3,160

3,100

2,530

93,180

3,106

184,800

July

2,210

2,000

1,920

1,920

1,890

1,870

1,870

1,870

1,900

1,700

1,600

1,500

1,400

1,350

1,300

1,300

 1 , 300

1,340

1,460

1,920

1,960

2,260 

2,050

1,780 

1,310

1,880 

1,540

1,320

1,170

1,030 

 

954

50,874

1,641

100,900

Aug.

874

755

648

580

536

518

474

470

470

450

460

460

430

*420

400

390

380

360

330

320

310

300 

290

285 

275

260 

260

255

245

235 

 

230

12,684

409

25,160

Sept.

230

ZS5

225

220

215

210

200

185

175

170

170

165

160

150

145

140

135

130

125

135

140

130 

125

125 

120

115 

TT5

120

120

115

4,735

158

9,390

Calendar year 1955: Max 9,300 Mln 57 Mean 559 Ac-ft 404,500

Water year 1955-56: Max 9,300 Mln 57 Mean 876 Ac-ft 635,800

Peak discharge (base, 5,000 cfs). Dec. 23 (5 a.m.) 13,900 cfs (16.30 ft); May 23 (12 p.m.) 5,790 

cfs (11.58 ft); May 31 (1 a.m.) 4,120 cfs (10.73 ft); June 10 (1:10 a.m.) 4,960 cfs (11.15 ft); 

June 28 (4 p.m.) 4,000 cfs (10.67 ft).

 Discharge measurement made on this day.

Note.--Ho gage-height record Dec. 25 to Feb. 6, Feb. 9-14, Feb. 16 to Mar. 2, July 7-17, Aug. 8-13, 

Aug. 16 to Sept. 30; discharge estimated on basis of records for Kings River near Hurae.
244 TULARE LAKE BASIN

Kings River near Home, Calif.

Location. Lat 36°50'50", long 118°53'50", in NEiSW^ sec. 35, T. 12 S., R. 28 E. , on

right bank 0.9 mile downstream from Ten Mile Creek, 1.2 miles downstream from confluence of South and Middle Forks, and 3.8 miles north of Hume.

Drainage area. --838 sq mi.

Records available. --August 1921 to December 1936, October 1951 to September 1956.

Gage. --Water -stage recorder. Datum of gage is 2,142.7 ft (from river -profile survey). 

Prior to Dec. 31, 1936, at same site at datum about 4.5 ft higher.

Average discharge. --17 years (1921-22, 1923-24, 1926-36, 1951-56), 1,164 cfs (842,700 

acre -ft per year) .

Extremes . --Maximum discharge during year, 38,000 cfs Dec. 23 (gage height, 15.53 ft), 

from rating curve extended above 6,500 cfs by logarithmic plotting; minimum, 103 cfs 

Mov. 13.

1921-36, 1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, 63 cfs 

Sept. 29 to Oct. 4, 1924.

Remarks . --Records good except those above 9,000 cfs, which are fair. No regulation or 

diversion above station. Hume Lake which formerly was emptied at low -water season now 

is kept full.

Revisions. --WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic feet

per second) 

(Shifting-control method used Dec. 23, 24)

Oct. 1 to Dec. 24 Dec. 25 to May 23 May 24 to Sept. 30

3.1 

3.5 

4.0 

5.0 

6.0

100

180

360

980

1,830

7.0

8.0

10.0

12.0

14.0

3,050

4,660

9,400

16,900

27,500

5.9 

6.5 

7.0 

8.0 

9.0 

11.0

615

1,050

1,510

2,800

4,500

9,000

5.0 

5.5 

6.0 

6.5

160

335

590

910

7.0

8.0

9.0

11.0

1,350

2,550

4,100

8,600

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26 

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

123 

TXT

120

120

120

120

116

114

114

114

114

113

111

110

TI3

113 

111

111

111

113

114

114

113

111 

110

111 

111

 111

111

110 

110

3,528

114

7,000

Nov.

110 

110

110

110

110

111

111

110

108

106

106

106

113

129

125

145 

173

166

197

208

261 2~Go"

191

186 

183

183 

191

191

»191

186

4,527

151

8,980

Dec.

287 

247

240

224

237

520

416

396

826

514

460

438

426

416

400

370 

360

342

426

438

432

3,370

19,700

12,600

6,930

5,060 

3,700

2,620

2,080

1,740 

1,600

67,812

2,187

134,500

Jan.

,480 

,350

,260

,170

,100

1,030

978

940

910

880

910

925

888

872

96T

1,280 

1,030

962

918

910

880

880

1,140

1,040 

2,060

2,110 

1,780

1,560

1,390

1,270 

1,160

36,025

1,162

71,450

Feb.

1,050 

1,020

978

978

970

932

888

842

*813

806

799

799

806

799

785

»750 

757

743

729

736

722

715

778

729 

708

708 

694

687

. ..§?!

23,388

806

46,390

Mar.

654 SBC1

674

680

674

»660

654

654

680

722

750

750

750

757

771

813 

872

918

994

1,010

1,080

1,170

1,260

1,440 

1,590

1,650 

1,610

1,640

1,780

1,880 

1,880

32,077

1,035

63,620

Apr.

1,720 

1,520

1,390

1,520

1,340

1,460

1,650

1,820

2,070

2,230

2,090

1,930

1,760

1,600

1,560

1,570 

1,570

1,570

1,600

1,750

1,940

2,150

2,640

3,020 

3,150

5,290 

2,800

2,460

2,400

2,520

59,890

1,996

118,800

May

2,830 

»3,180

3,890

5,340

4,080

3,660

3,320

3,010

3,060

2,640

2,540

2,320

2,160

2,150

2,460

3,010 

3,550

4,050

4,740

4,360

5,720

7,080

7,920

8,150 

6,630

6,780 

7,220

7,050

7,100

»7,320 

7,180

144,520

4,662

286,700

June

6,750 

6,780

6,620

6,750

6,280

5,880

6,420

6,820

7,380

7,680

7,300

7,200

7,180

6,620

5,540

4,980 

5,340

5,900

6,420

5,980

5,680

5,880

6,150

6,300 

5,900

5,920 

6,320

6,620

6,700

6,120

191,410

6,380

379,700

July

5,120 

4,290

3,750

3,660

3,640

3,630

3,630

3,640

3,710

3,580

3,180

3,020

2,660

2,440

2,340

2,350 

2,410

»2,440

2,780

3,550

3,780

4,840

4,120

4,080 

3,650

4,190 

3,930

3,240

2,810

2,440 

2,230

105,120

3,391

208,500

Aug.

2.020 

1,760

1,520

1,380

1,250

1,170

1,120

1,120

1,120

1,090

1,090

1,040

982

990

974

950 

910

875

840

808

775

749

736

723 

692

674 

656

632

632

602 

590

30,470

983

60,440

Sept.

554" 590 

578

566

542

519

502

470

440

425

416

416

398

380

358

340 

323

315

307

340

344

323

311

303 

295

287 

'295" 283

295

287

11,832

394

23,470

Calendar year 1955: Max 19,700 Mln 106 Mean 1,131 Ac-ft 818,500

Water year 1955-56: Max 19,700 Mln 106 Mean 1,942 Ac-ft i, 410,000

Peak discharge (base, 5,500 cfs).--Dec. 25 f4 a.m.) 38.000 efs (15.53 ft); May 4 (6 a.m.) 6,16o 

cfs (9.83 ft); May 24 (12:30 a.m.) 9,740 cfs (11.38 ft); June 10 (12:30 a.m.) 8,580 cfs (10.99 ft);

July 22 (7:30 p.m.) 6,550 cfs (1O.18 ft); July 26 (10 a.m.) 4, 

* Discharge measurement made on this day.

cfs (9.39 ft).
TULARE LAKE BASIN 245

Kings River above North Fork, Calif.

Location. Lat 36°51'45", long 119°07'25", in NE^ sec. 27, T. 12 S., R. 26 E., on left 

bank at Rogers Crossing, 0.9 mile upstream from North Fork and 2.9 miles south of 

Balch Camp.

Drainage area. 956 sq mi.

Records available.--March 1927 to December 1928, October 1931 to September 1956.

_.--Water-stage recorder. Datum of gage is 1,003.5 ft above mean sea level (from 

river-profile survey). March 1927 to December 1928 at site 0.5 mile downstream at different datum.

Average discharge.--26 years, 1,431 cfs (1,036,000 acre-ft per year).

Extremes.--Maximum discharge during year, 59,100 cfs Dec. 23 (gage height, 16.26 ft), 

from rating curve extended above 11,000 cfs on basis of slope-area determination of 

peak flow; minimum, 117 cfs Nov. 13.

1927-28, 1931-56: Maximum discharge, that of Dec. 23, 1955; minimum, 79 cfs 

Oct. 13, 1934.

Remarks. Records excellent below 10,000 cfs, fair above, 

above this station.

Revisions (water years). WSP 1395: 1938(M), 1951(M).

No regulation or diversion

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 8-15, 18-22)

Oct. 1 to Dec. 25 Dec. 23 to Sept. 30

3.0 

4.0

114

162

296

516

1,180

2,300

5.0

7.0

9.0

11.0

13.0

4,180

11,000

20,000

29,800

40,400

1.1 

1.5 

2.0 

2.5 

3.0 

4.0

268

400

620

920

1,330

2,560

5.0

7.0

9.0

11.0

13.0

4,660

11,500

20,000

29,800

40,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

AC-ftJ

Oct.

130 T2"8~

127

125

125

125

124

122

121

121

121

*122

121

120 150-

124 

121

121

121

122

122

124

125

124

121

121

122

122

122

121

121

3,806

123

7,550

Nov.

121 

121

122

121

121

121

122

121

120 T50"

120

120

122

155

136

151

187

180

199

216

269

217

209

204

199

199

199

199

199

194

4,914

164

9,750

Dec.

317

*311

253

232

24T

503

486

372

990

570

476

443

429

407

394

*368 

351

338

407

420

425

3,950

*58,200

22,300

9,530

5,650

4,840

3,610

3,070

2,680

2,430

104,993

3,387

208,300

Jan.

2,170 

1,900

1,710

1,540

1,420

1,320

1,220

1,130

1,090

1,020

1,070

1,120

1,040

*968

1,050

1,710 

1,250

1,130

1,040

1,020

976

958

1,550"

1,200

4.860

3,690

4,010

2,770

2,260

1,930

1,710

51,962

1,676

103,100

Feb.

1.490 

1,370

1,290

1,250

1,230

1,180

1,120

1,090

1,040

1,020

1,020

1,010

1,010

1,010

976

928 

892

892

843

843

815 S55~

1,130

1,020

920

928

857

*850

864 "

29,710

1,024

58,930

Mar.

829 

829

850

864

864

843

815

35?

843

871

920

913

899

920

920

960 

1,040

1,060

1,180

1,170

1,230

1.330

1,420

1,630

1,840

1,920

1,870

1,860

2,010

*2,110

2,lK>

37,742

1,217

74,860

Apr.

1,980 

1,720

1,560

1.460

1,460

1,600

1,790

1,980

2,210

2,430

2,360

2,210

2,040

1,840

1,740

1,800 

1,790

1,760

1,760

1,920

2,110

2,280

2,780

3,180

3,320

3,550

3,150

2,770

2,680

2,710

65,940

2,198

130,800

May

2,950 

3,300

3,880

5,350

4,280

3,850

3,590

3,220

3,500

3,000

2,870

2,640

2,420

2.320

2,610

3,130 

3,660

3,940

4,740

4,280

5,470

6,850

*8,050

8.950

6^950

6,920

7, TOO

7,220

7,530

7,730

7,660

150,560

4,857

298,600

June

7,190 

7,150

6,980

7,150

6,710

6,250

6,710

7,190

7,870

8.540

7,910

7,660

7,660

6,950

5,830

5.550 

5,530

6,020

6,640

*6,250

5,960

6,090

6,380

6,610

6,220

6,180

6,610

6,950

6,950

6,540

201,830

6,728

400,300

July

5,590 

5, ISO

4,450

4,210

4,140

4,110

4,110

4,090

4,110

4,110

3,880

3,480

3,200

2,890

2,660

2.590 

2,640

2,710

2,890

3,520

3,970

5,410

4,950

4,870

4,890

4,710

4,980

4,330

3,700

3,200

2,800

122,310

3,945

242,600

Aug.

2.510 

2,190

1,910

1,660

1,490

1,340

1,230

1,160

1,130

1,120

1,090

1,070

1,020

984

984

960 

913

871

829

794

756

726

710

700

680

655

635

620

610

586

572

32,505

1,049

64,470

Sept.

572 

5BT

558

548

530

507

494

464

440

424

412

412

393

372

358

344 

324

314

304

330

344

330

320

304

298

292

280 559-

298

292

11,710

390

23,230

Calendar year 1955: Max 38,200 Mln 120 Mean 1,302 Ac-ft 942,300

Water year 1955-56 : Max 38,200 Mln 120 Mean 2,235 Ac-ft 1,622,000

Peak discharge (base. 6,500 cfs).--Dec. 23 (5 a.m.) 59,100 cfs (16.26 ft); Jan. 25 (5 p.m.) 6,950 

cfs (5.75 ft); May 24 (3 a.m.) 10,600 cfs (6.76 ft); June 10 (2:50 a.m.) 9,420 cfs (6.45 ft); June 19 

(5:50 a.m.) 7,460 cfs (5.90 ft); July 22 (10:50 p.m.) 6,580 cfs (5.64 ft),

* Discharge measurement made on this day.

493801 O - 59 - 17
246 TULARE LAKE BASIN

Helms Creek at Sand Meadows, Calif.

Location. Lat 37°05'50", long 118°58'20", in SE£ sec. 36, T. 9 S., R. 27 E., on right 

bank at lower end of Sand Meadows, 0.8 mile downstream from Busy Creek, and 4.1 miles 

upstream from mouth.

Drainage area.--34.7 sq mi.

Records available.--October 1922 to September 1935, October 1955 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 8,030 ft (from topographic map).

Average discharge. 6 years (1923-25, 1926-27, 1928-30, 1955-56), 57.8 cfs (41,850 acre-ft 

per year).

Extremes. Maximum discharge during year not determined, occurred Dec. 23; minimum not 

determined, probably occurred during October.

1922-35, 1956: Maximum, that of Dec. 23, 1955; minimum discharge, 1.1 cfs Aug. 1, 

27, 1924, Oct. 30, 1932.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No regulation or diversion.

Cooperation.--Water-stage-recorder graph and five discharge measurements furnished by 

Pacific Gas and Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.8

1.9

2.0

2.1

2.2 

2.4 

2.7

3.0

4.8

7.1

9.8

13

21

40

3.0 

3.5 

4'.O 

4.5 

5.0 

6.0 

7.0

72

158

295

490

735

1,380

2,280

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

2Z

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

 a.Z.0

3.2

3.0

3.0

3.0

3.2

3.2

3.2

3.2

3.5

3.4

3.5

3.5

3.5

3.5

3.5

3.5

3.9

3T5

3.5

3.5

3.4

100.7

3.25

200

Nov.

3.2

3T7

3.7

3.5

3.7

3.7

3.5

3.5

3.7

3.7

3.5

3.4

3.4

3.2

5,7

5.0

6.0

5.7

5.7

5.7

6.0

6.9

7.1

7.4

8.4

9.3

10

10

10- 11

169.3

5.64

336

Dec.

7.1

8.2

12

10

9.8

9.3

9.8

9.0

8.4

10

9.8

9.0

8.7

8.7

8.2

8.2

8.2

7.9

774" 6.9

7.6

458

2,100

276

135

126

101

96

90

78

78

3,724.2

1EO

7,390

Jan.

75

72

66

66

62

59

60

57

55

52

52

57

52

48

62

~5S 101

59

53

52

48

45

55

54

50

70

65

60

55

55

50

1,838

59.3

3,650

Feb.

 re 45

45

45

45

45

45

42

42

42

42

45

45

45

42

40

38

37

36

35

35

35

35

37

37

35

35

35

35

1,165

40.2

2,310

Mar.

35

4C

40

45

45

40

38

40

45

50

55

50

50

55

60

60

65

70

70

75

85

92

104

131

143

143

141

154

173

T72" 185

2,551

82.3

5,060

Apr.

135

118

103

101

I2T

158

192

227

264

264

*201

158

137

118

111

115

- 116

128

145

171

185

222

306

344

565

302

208

180

189

222

5,607

187

11,120

May

284

360

468

486

354

312

254

230

214

185

173

152

150

T79

272

372

351

482

504

551

716

833

860

TSTF

649

687

683

638

*652

*644

589

14,004

452

27,780

June

547

532

551

5T9l

445

444

462

456

469

454

405

398

360

306

270

267

267

2 6O

245

219

211

208

196

178

167

167

165

152

130

108

9,558

319

18,960

July

94

86

76

72

68

64

59

55

49

42

36

31

27

24

23

21

*1950"

35

57

53

65

140

T2S

92

75

60

50

38

29

24

1,712

55.2

3,400

Aug.

2250-

19

17

16

15

14

13

12

11

11

10

9.5

9.3

9.0

8.4

8.2

7.6

7.6

7.1

6.9

6.6

6.4

6.2

6.2

6.0

6.0

5.7

6.2

5.7

5.5

314.1

10.1

623

Sept.

5.3

5.0

5.0

5.0

*4.8

4.8

4.6

4.4

47!

4.6

4.6

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

5.5

4.8

4.8

4.6

4.6

4.4

4.4

6.6

S72

5.0

4.8

143.4

4.78

284

Calendar year 1955; Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 2,100 Mln - Mean 112 Ac-ft 81,110

Peak discharge (base, 250 efs).--Dee. 23 (time and discharge unknown); Apr. 9 (8 p.m.) 330 cfs 

(4.10 ft); AprT 24 (8 p.m.) 441 cfs (4.39 ft) ; May 3 (6:30 p.m.) 630 cfs (4.79 ft) ; May 22 (6 p.m.) 

1,180 cfa (5.75 ft); July 23 (6 p.m.) 605 cfs (4.74 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby streams.

Note. Stage-discharge relation affected by ice Jan. 24 to Mar. 19 (no gage-height record Jan. 29 

to Pet. 16; discharge estimated on basis of observer's notes, recorded range in stage, weather records, and record for North Pork Kings River near Cliff Camp).
TULARE LAKE BASIN 247

North Pork Kings River near Cliff Camp, Calif.

Location.--Lat 37°00', long 118 0 59', In NW£ sec. 12, T. 11 S., R. 27 E., on right bank at 

Cliff Camp Bridge, 1 mile northwest of Cliff Camp and 2.3 miles downstream from Woodchuck Creek.

Drainage area. 174 sq ml.

Records available. August 1921 to September 1956.

Qage.--Water-stage recorder. Datum of gage Is 6,143.95 ft above mean sea level, adjustment of 1912 (levels by San Joaquln Light and Power Corp.). Prior to Nov. 24, 1922, 

at site 1 mile upstream at different datum.

Average discharge.--32 years (1921-32, 1933-35, 1937-56), 358 cfs (259,200 acre-ft per 

year).

Extremes. Maximum discharge during year, 11,900 cfs Dec. 23 (gage height, 16.8 ft); minimum dally, 5.1 cfs Nov. 9.

1921-56: Maximum discharge, 14,000 cfs Dec. 11, 1937 (gage height, 18.0 ft, from 

floodmarks), from rating curve extended above 4,200 cfs on basis of velocity-area 

studies and by logarithmic plotting; minimum dally, 1.3 cfs Sept. 9, 10, 1924.

Remarks.--Records good. Temporary storage and regulation above station since August 1955 

when construction began on Wlshon Dam. No diversion.

Cooperation. Water-stage-recorder graph and four discharge measurements furnished by Paclflc Qas & Electric Co. In connection with a Federal Power Commission project.

Rating tables, water year 1955-S6 (gage height, In feet, and discharge,

In cubic feet

Oct. 1 to Dec. 23

2.4

2.5

2.7

2.9

3.1

3.4

3.7

4.0

3.S

5.2

S.O

13

24

45

78

120

4.5

5.0

6.0

7.0

9.0

10.0

12.0

14.0

210

325

670

1,110

2,420

3,310

5,340

7,590

per second)

Dec. 23

2.S

2.9

3.1

3.4

3.6

4.0

5.0

10

13

24

45

70

140

340

to Sept.

6,0

7.0

8.0

10.0

12.0

14.0

30

575

900

1,420

3,060

5,160

7,540

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

£4575

5.6

5.6

5.6

5.8

5.5

5.5

5.6

5.6

5.6

5.6

5.5

5.5

5.2

5.2

5.2

5.3

5.3

5.5

5.5

5.6

5.6 

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

171.6

5.54

340

Nov.

*5.8

5.5

5.6

5.8

5.6

5.8

5.8

5.5

5.1 57F

5.8

5.3

5.6

5.8

11

12

18

18

27

27

So" 36

19

17

18

21

24

26

27

23

422.5

14.1

838

Dec.

22

25

27

28

28

58

39

55

82

56

58

60

60

59

56

50

44

41

47

98

84

2,970

7.460 

3,130

912

1,000

585

480

425

360

342

18,742

605

37,170

Jan.

328

316

308

294

290

280

270

266

260

258

326

338

296

288

MI

458

338

304

284

278

266

268

280 

256

228

376

310

294

278

270

248

9,305

300

18,460

Feb.

220" 226

220

222

222

212

206

206

200

202

206

220

224

220

210

200

192

188

184

178

178

180

180 

190

184

180

172

172

m

5,768

199

11,440

Mar.

174

155

206

216

210

190

184

190

228

258

272

256

260

272

276

310

348

378

396

402

460

498

562 

666

720

699

660

693

768

796 73B12,476

402

24,750

Apr.

590

498

445

T£5

532

675

813

967

1,160

1,100

836

669

578

520

520

538

555

580

654

774

856

1,040

1,360 

1,560

1, 670

1,510

998

848

872

990

25,153

838

49,890

May

1,220

1,570

2,140

2,880

1,710

1,410

1,150

967

1,060

813

760

666

615 678"

1,050

1,520

1,600

2,080

2,380

2,270

3,240

*3,910

4.210 

3,660

3,100

3,340

3,460

*3,220

*3,380

3,430

3,220

66,929

2,159

132,800

June

2,930

2,930

2.990

2,920

2,640

2,500

2,710

2,710

2,840

2,840

2,630

2,510

2,400

2,060

1,640

1,620

1,750

1,880

1,920

1,630

*1,590

1,620

1,640 

1,560

1,380

1,370

1,430

1,390

1,300

1.030

62,360

2,079

123,700

July

816

693

621

600

582

568

542

535

510

475

420

378

338

310

294

286

*274

276

348

638

532

557

602 

825

TOT

518

540

396

318

272

256

15,007

484

29,770

Aug.

214 TTi

158

134

121

103

91

78

83

78

73

69

62

56

*38

13

37

43

43

41

39

37

34 

34

34

31

34

33

32

30

29

2,136

68.9

4,240

Sept.

28 IB26

26

24

*25

22

21

17

18

18

17

15

15

14

13

14

13

13" 12

15

16

14 

14

13

13

12

14

16

14

517

17.2

1,030

Calendar year 1955: Max 7,460 Mln 4.1 Mean 328 Ac-ft 237,300

Water year 1955-56: Max 7,460 Mln 5.1 Mean 598 Ac-ft 434,400

(13.66 ft): May 22 (8 p.m.) 5,480 cfs (12.28 ft)j May 26 (9:30 p.m.) 4,460 cfs (11.36 ft); June 9 

(9:30 p.m.) 3,810 efs (l0.75 ft). 

* Discharge measurement made on this day.
248 TULARK LAKE BASIN

Kings River below North Fork, Calif.

Location.-Lat 36°52'30", long 119°08'30", in NE£ sec. 21, T. 12 S., R. 26 E., on right

 bank '0.8 mile downstream from North Fork, 2.4 miles southwest of Balch Camp, and 

8.5 miles southeast of Trimmer.

Drainage area.--1,350 sq mi, approximately.

Records available.--December 1951 to September 1956.

Gage. Water-stage recorder. Datum of gage is 942.42 ft above mean sea level (levels by 

"tTorps of Engineers).

Extremes. Maximum discharge during year, 85,200 cfs Dec. 23 (gage height, 23.08 ft), from

 rating curve extended above 18,000 cfs on basis of slope-area determination of peak 

flow; minimum, 127 cfs Oct. 25.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, 120 cfs Oct. 9, 1954.

Flood of Nov. 19, 1950, reached a stage of 21.6 ft, from floodmarks (discharge, 

74,200 cfs).

Remarks.--Records excellent. This station measures inflow to Pine Flat Reservoir. Flow

 slightly regulated by powerhouse on North Fork. Slight regulation by small reservoirs 

above station on Ten Mile and Mill Flat Creeks, noted in previous years, found insignificant and has no effect on flow at this station under present conditions. Records 

of chemical analyses for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

Oct. 1 to Dec. 23

1.9

2.1

2.5

3.0 

3.5 

4.0

5.0

120

166

265

435 

665 

965

1,800

6.0

7.0

8.0

10.0 

14.0 

19.0

2,940

4,450

6,460

12,300 

28,500 

56,500

Dec. 24 to Sept.

2.S 300

3.1 415

3.5 620

Note. Same 

table above 5,

4.0

5.0

30

940

1,800

as preceding 

.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

M

141

141

143

143

138

136 

136

136

138

*138

134

132

132

134

132

129 l3"5

132

134

134

136

134

129

129

132

134

134

132

132

4,195

135

8,320

Nov.

132 

134

136

132

132

132

134

132 

132

129

129

129

136

198

168

198

252

240

274

304

415 3~46

277

265

255

255

262

271

274

265

6,238

208

12,370

Dec.

437 

440

336

307

3lF

794

756

511 

1,560

852

665

625

610

565

560

*516

488

459

576

671

747

7,910

* 52, 500

29,400

12,100

8,900

6,810

4,890

3,900

3,290

3,060

145,560

4,695

288,700

Jan.

2,810 

2,560

2,380

2,220

2,100

1,970

1,860

1,800 

1,720

1.640

1,830

1,930

1,770

*1,690

2,040

3,080

2,140

1,910

1,780

1,750

1,690

1,660

2,620

1,960

6.780

5,460

5,630

3,680

3,040

2,640

2,380

78,520

2,533

155,700

Feb.

2.180 

1,980

1,910

1,870

1,840

1,750

1,660

1,620 

1,560

1,550

1,540

1,560

1,560

1,560

1,510

1,430

1,390

1,400

1,340

1,350

1.510

l,Sl6

1,800

1,570

1,450

1,460

*1,370

1,360

1,350

45,540

1,570

90,330

Mar.

1,330 

1,360

1,410

1,450

1,460

1,380

1,320

1.510 

1,380

1,480

1,580

1,500

1,500

1,540

1,530

1,610

1,770

1,860

2,000

1,980

2,190

2,330

2,520

2,930

3,240

3,270

3,130

3,140

*3,410

5,600

3,600

64,110

2,068

127,200

Apr.

3,210 

2,710

2,460

2.340

2,430

2,810

3,270

3,660 

4,170

4,420

3,960

3,530

3,210

2,860

2,780

2,950

2,970

3,000

3,070

3,440

3,800

4,070

5,000

5,690

5,980

6.420

5,366

4,550

4,470

4,620

113,150

3,772

224,400

May

5,060 

5,670

6,870

10,300

7,040

6,370

5,910

5,220 

5,800

4,820

4,690

4,220

3,860

5.780

4.430

5,400

6,200

6,700

8,060

7,280

*9,780

12,200

* 13, 600

15,800

11, loo

*11,300

12,100

11,200

11,600

11,800

11 600

247,760

7,992

491,400

June

10,900 

10,900

10,700

10,900

10,200

9,420

10,100

10,400 

11,100

11.500

11,000

10,600

10,600

9,720

8,140

7 ,490

7,780

8,440

9,090

*8,440

7,930

8,170

8,390

8,610

7,990

7,880

8,330

8,560

8,500

7,930

279,710

9,324

554,800

July

6.650 

5,710

5,060

4,840

4,840

4,730

4,690

4,620 

4,660

4,550

4,040

3,780

3,400

3,100

2,930

2,940

2,970

3,020

3,350

4,260

4,680

5,490

5,190

5,130

5,100

4,940

4,910

4,120

3,480

2,990

2,720

132,890

4,287

263,600

Aug.

2,480 

2,200

1,880

1,720

1,560

1,450

1,380

1,340 

1,350

1,320

1,310

1,260

1,190

1,180

1,170

1,100

1,110

1,030

989

954

898

870

842

828

794

758

758

722

716

686

*668

36,513

1,178

72,420

Sept.

668 655"

632

632

604

576

565

521 

495

475

460

456

442

420

395

379

359

351

343

363

387

371

351

339

332

321

356" 318

335

321

13,189

440

26,160

Calendar year 1955: Max 52,500 Min 129 Mean 1,850 Ac-ft 1,339,000

Water year 1955-56: Max 52,500 Mln 129 Mean 3,190 Ac-ft 2,315,000

Peak discharge (base. 8.000 cfs). Dec. 23 (5 a.m.) 85,200 ofs (23.08 ft); Dec. 26 (5 p.m.) 12,100 

cfs (9.95 ft); Jan. 25 (11 a.m.) 10,100 cfs (9.35 ft); May 4 (6:30 a.m.) 14,100 cfs (10.53 ft): 

May 24 (1 a.m.) 16,300 cfs (11.15 ft); June 10 (l a.m.) 13,200 cfs (10.28 ft); June 29 (3 a.m.) 

10,200 cfs (9.38 ft).

* Discharge measurement made on this day.
TULARE LAKE BASIN 

Big Creek above Pine Plat Reservoir, Calif.

249

Location.--Lat 36°55'05", long 119°14'45", in NEir sec. 4, T. 12 S., R. 25 E., on right 

bank 2.4 miles above mouth and 2.7 miles northeast of town of Trimmer.

Drainage area. 69.2 sq mi.

Records available.--October 1953 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 962.04 ft above mean sea level (levels by 

Corps of Engineers).

Extremes. Maximum discharge during year, 10,400 cfsDec. 23 (gage height, 9.21 ft), from 

rating curve extended above 820 cfs on basis of slope-area determination of peak flow; 

minimum, 0.7 cfs Oct. 8, 9, 10.

1953-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 14, 1955.

Remarks. Records excellent except those above 300 cfs, which are good.. This station 

measures inflow to Pine Plat Reservoir. No regulation or diversion above station.

Cooperation. Four discharge measurements furnished by Kings River Water Association.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic feet

per second)

:t. 1

0.75

.8

.9

1.0

1.2

1.4

1.7

to Dec. 2

0.6

1.2

2.6

4.8

12

21

47

1.7

2.0

2.3

2.6

3.0

3.5

Dee. 2

8.0

24

47

82

155

300

to Dee

4

5

6

7

8

. 23

.0

.0

.0

.0

.0

520

1,140

2,200

3,900

6,300

1

1

1

1

1

Dee

.05

.1

.2

.3

.6

Note

. 24 to

1.8

2.4

4.2

6.9

19

. Same

Sept.

2.0

2.5

3.0

3.5

4.0

30

45

94

174

326

520

as preoedIng table above 4.0 ft. 

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

2223 ' 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

1.0

.9

.9

.9 l.'O

.9

1.0

479

1.0

1.2

*1.3

1.3

1.0

.9

1.0

1.0

1.0

1.3

1.5

2.0

1437T

1.8

1.5

1.4

1.0

1.2

1.4

1.4

1.5

39.7

1.28

79

Nov.

1.8

2.2

2.2

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

3.4

6.0

6.3

5.7

7.2

7.2

6.3

7.6

13

17

e'.3

6.0

6.0

6.0

6.3

6.3

6.3

157.8

5.26

313

Dec.

*34

38

15

10

*8.0

*64

45

21

*89

33

22

17

16

14

12

11

10

9.5

19

53

47

890

*5.890 

4,720

1,510

851

741

377

258

186

179

16,189.5

522

32,110

Jan.

150

133

120

110

102

94

90

87

80

76

79

80

*757Jr

102

177

100

83

78

80

79

91

560 

*223

2.180

1,220

1,110

520

381

316

265

8,917

288

17,690

Feb.

*226

196

179

168

160

149

138

133

125

120

119

116

113

110

106

101

98

99

95

92

*91'g'T

400

149

143

*125

117

113

4,078

141

8,090

Mar.

109

To?

107

106

104

98

94

93

92

90

91

87

86

83

81

81

82

81

80

78

78

76

75 

74

74

73

72

70

#67

COoo

2,626

84.7

5,210

Apr.

79

71

68

66

66

64

61

60

35

60

73

113

106

92

88

100

100

120

104

94

86

80

75 

71

69

170

*204 T4~0"

117

107

2,764

92.1

5,480

May

95

87

81

236

122

102

120

111

306

T55

193

176

140

123

113

104

96

100

92

86

*83

79

75 

74

72

69

67

68

63

61

59

3,451

111

6,840

June

58

57

56

54

54

52

51

47

47

47

45

43

42

41

43

43

40

38

*36

37

36

34

33 

31

30

29

27

26

24

If

1,225

40.8

2,430

July

23

23

24

23

22

22

22

20

20

19

18

17

17

17

16

16

15

15

14

14

13

13

11

11

11

11

9.8

9.8

.9.0

8_.S_

495.2

16.0

982

Aug.

8.6

re

8.2

8.2

8.6

8.2

7.9

7.6

7.2

6.6

6.3

6.0

5.7

5.4

5.7

5.4

5.4

5.4

5.2

4.9

4.9

4.6

4.6 

4.2

4.0

443TS

3.8

4.0

3.8

*3.8

180.0

5.81

357

Sept.

3.4

3.4

3.0

2.6

2.6

2.5

2.4

2.5

2.4

2.4

2.4

2.5

2.6

2.6

2.6

2.5

2.4

2.2

2.1

2.8

44T7I

2.8 

2.2

2.0

2.0

2.0

2.8

2.8

2.4

77.9

2.60

155

Calendar year 1955: Max 5,890 Mln 0 Mean 65.9 Ac-ft 47,690

Water year 1955-56: Max 5,890 Mln 0.8 Mean 110 Ao-ft 79,740

Peak discharge (base, 500 ofs).--Dee. 23 (4 a.m.) 10,400 ofs (9.21 ft)j Dec. 26 (5 p.m.) 1,460 ofs 

(5.36 ft)3 Jan. 23 (3 a.m.) 1,160 ofs (5.03 ft); Jan. 25 (12 m.) 4,500 ofs (7.30 ft)j Feb. 23 (9 a.m.) 

615 ofs (4.19 ft).

Jan. _ 

615 ofs (4.19 ft).

* Discharge measurement made on this day.
250 TULARE LAKE BASIN

Sycamore Creek above Pine Plat Reservoir, Calif.

Location. Lat 36°55'15", long 119"18'30", in NW£ sec. 1, T. 12 S., R. 24 E., 0.1 mile 

downstream from Little Dry Creek, 1.7 miles northwest of town of Trimmer, and 4.8 miles 

upstream from mouth.

Drainage area. 56.5 sq mi.

Records available. April 1953 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,141.96 ft above mean sea level (levels by 

Corps of Engineers).

Extremes.--Maximum discharge during year, 6,760 cfs Dec. 24 (gage height, 9.78 ft), from 

rating curve extended above 2,900 cfs on basis of slope-area determination of peak flow; 

no flow during several months.

1953-56: Maximum discharge, that of Dec. 24, 1955; no flow for several months each 

year.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

This station measures inflow to Pine Plat Reservoir.

Cooperation. Three discharge measurements furnished by Kings River Water Association.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 22 to July 8

0.4 

.5

0

.3 

1.0 

2.3 

4.4

0.9 

1.0 

1.2 

1.5

7.9 0.43

.5

.&

.7

.8 

1.0 

1.3

1.8

2.7

5.0

9.0

15

33

73

1.6 

2.0 

2.5 

3.0 

4.0 

6.0 

8.0

125

215

369

560

1,070

2,600

4,680

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

if

0.7

0.02

1.4

Dec.

*10

7.7

1.4

.6 *jA

*27

13

5.0

*37

5.3

2.9

2.0

1.5

1.2

1.1

1.0

.9

1.1

4.8

55

13

*357

5,740 

*3,500

1,150

642

672

183

103

75

110

10,723.9

346

21,270

Jan.

76

60

50

45

38

35

32

32

28

26

25

24

*22

22

39

75

33

27

25

29

28

64

557 

123

2,300

1,100

998

348

195

143

114

6,713

217

13,320

Feb.

*89

78

72

*66

62

57

53

49

45

43

42

40

39

37

35

33

32

33

31

29

*28

29

~54 377 

60

60

*50

46

43

1,742

60.1

3,460

Mar.

40

39

38

35

33

32

31

30

30

29

29

28

27

26

25

24

23

23

23

22

22

21

21 

20

20

20

20

19

*19

18

19

806

26.0

1,600

Apr.

22

20

18

17

17

16

16

15

IE" 14

20

68

*57

41

33

37

32

33

27

24

21

20

19 

17

17

55

*78

43

31

26

869

29.0

1,720

May

23

21

20

61

31

27

34

29

~§0~ 158

57

49

41

33

29

27

25

25

22

20

*19

18

17 

16

16

15

14

14

13

12

12

988

31.9

1,960

June

11

TT

11

9.5

9.0

9.5

9.0

8.0

7.6

7.2

6.8

6.8

6.0

6.0

6.8

6.8

6.0

5.7

*5.0

5.4

5.0

4.7

4.2 

3.7

3.5

3.3

3.1

2.6

2.3

2^.0

188.5

6.28

374

July

2.0

2.2

2.3

77S

2.0

1.9

1.9

1.8

.7

.6

.5

.4

.3

1.2

1.1

1.0

.9

.8

.7

.6

.5

.4

.3

**.2

.2

.1

.1

.1

0

*5

0

32.0

1.03

63

Aug.

(*)

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max 3/740 Min 0 Mean 36.1 Ao-ft 26,160

Water year 1955-56: Max 3,740 Min 0 Mean 60.3 Ao-ft 43,770

Peak discharge (baae. 300 cfa). Dec. 24 (1 a.m.) 6,760 cfa (9.78 ft); Dec. 27 (? a.m.) 1,300 cfs 

(4.38 ft); Jan. 23 (1:30 a.m.) 1,800 ofa (5.07 ft); Jan. 25 (12 m.) 4,650 cfs (7.97 ft); Feb. 23 

(5:30 a.m.) 889 cfa (3.68 ft); May 9 (9:30 p.m.) 488 cfs (2.82 ft).

* Discharge measurement or obaervation of no flow made on thla day.

** Field eatlmate made on thia day.

Note. No gage-height record July 9-23, 25-29, 31; discharge estimated on baaia of interpolation, 

1 field eatlmate, and 1 obaervation of no flow.
TULARE LAKE BASIN 251

Pine Flat Reservoir near Piedra, Calif.

Location. Lat 36"49"55", long 119°19'25", in NE£ sec. 2, T. 13 S., R. 24 E., near center 

of Pine Flat Dam on Kings River, 1.9 miles upstream from Mill Creek, 3.5 miles northeast of Piedra, and 16 miles northeast of Sanger.

Drainage area. 1.542 sq mi.

Records available. October 1951 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Corps of Engineers). Prior to Apr. 8, 1952, nonrecording mercury gage on dam at same datum.

Extremes. Maximum contents .during year, 938,900 acre-ft June 29 (elevation, 940.78 ft); 

minimum, 68,830 acre-ft Oct; 7 (elevation, 692.67 ft).

1951-56: Maximum contents, that of June 29, 1956; minimum, less than 13 acre-ft 

during many months in 1951-54.

Remarks. Reservoir is formed by gravity-type concrete dam; regulation of discharge from 

reservoir began Dec. 4, 1951. Capacity, 1,013,400 acre-ft between elevation 565.5 ft 

(bottom of lower tier of river outlets) and 953.5 ft (top of spillway gates) above mean 

sea level.

Reservoir is used for flood control and conservation storage. Water is released 

down Kings River to diversion dam of Kings River Water Association. Records show total 

contents at 12 p.m., all of which is available for release.

Cooperation. Records furnished by Corps of Engineers and reviewed by Geological Survey.

Capacity tables, water year 1955-56 (elevation, In feet, and contents, 

in acre-feet)

Oct. 1 to Dec. 31 Jan. 1 to Sept. 3O

690 

700 

7ZO 

740 

760

65,000

79,560

113,400

154,000

201,400

780 

800 

8ZO 

840 

860

255,400

316,200

383,600

457,800

538,800

820

840

860

880

383,600

457,800

538,800

626,800

90O 721,800

920 824,200

950 992,600

Contents, in acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

(8

Oct.

69,490 

69,360 

69,220 

69,120 

69,030

68,930 

68,850 

68,940 

69,060 

69,160

69,290 

69,440 

69,580 

69,720 

69,840

69,960 

70,080 

70,220 

70,360 

70,520

70,650 

70,810 

70,970 

71,130 

71,270

71,400 

71,560 

71,720 

71,900 

71,060 

72,230

695.02 

+2,620

Nov.

72.590 

72,580 

72,810 

73,060 

73,290

73,540 

73,800 

74,050 

74,300 

74,530

74,760 

75,000 

75,410 

75,820 

76,160

76,540 

77,010 

77,490 

78,010 

78,570

79,410 

80,220 

80,730 

81,200 

81,620

82,060 

82,520 

82,980 

83,460 

85,950

702.86 

+11,700

Dec.

84,930

86,090 

86,760 

87,350 

87,970

89,640 

91,520 

92,630 

95,810 

97,750

99,140 

100,400 

101,700 

102,800 

103,800

104,800 

105,700 

106,600 

107,700 

109,100

110,700 

126,900 

271,100 

365,300 

401,100

425,100 

443,000 

454, 400 

463,400 

470,500 

477*300

845 .00 

 »39 3, 400

Jan.

483,300

488,500 

493,700 

498,500 

503,000

507,300 

511,400 

515,200 

519,000 

522,300

526,200 

530,100 

533,500 

536,900 

541,100

548,000 

552,400 

556,300 

559,900 

563,500

567,000 

570,800 

578,700 

583,400 

609,800

626,800 

644,300 

654,300 

662,100 

668,400 

674,300

890.18 

+197,000

Feb.

679,600 

682,600 

684,000 

684,200 

684,400

684,400 

683,400 

681,800 

680,000 

677,400

674,100 

670,200 

666,400 

661,700 

656,000

649,400 

641,800 

634,300 

626,500 

618,800

611,000 

603,300 

598,100 

591,300 

583,700

576,000 

568,100 

560,200 

552,000

_ __ _ _

863.13 

-122, 300

Mar.

544,000

535,900 

527,400 

518,700 

510,200

501,100 

491,500 

485,600 

482,400 

479,600

476,700 

473,200 

469,600 

466,100 

462,400

458,500 

454,700 

451,300 

447,900 

444,700

441,500 

438,700 

436,700 

435,500 

434,800

433,700 

432,200 

431,000 

430,000 

429,700 

429, 600

832.62 

-122,400

Apr.

428,700 

427,000 

424,700 

422,500 

420,300

418,200 

417,200

417,200 

418,200 

419,800

421,600 

424,500 

427,200 

429,500 

431,800

434,400 

438,900 

443,700 

448,100 

453,200

459,100 

465,300 

472,700 

480,900 

491,100

503,400 

513,700 

522,400 

530, 600

859.84 

+OO8, 500

May

546,300

555^300 

566,300 

584,900 

596,500

605,800 

614,000 

620,900 

630,200 

636,200

641,100 

644,500 

646,500 

648,200 

651,100

654,900 

659,900 

665,900 

674,800 

681,300

692,700 

708,500 

726,500 

744,500 

756,800

769,300 

783,000 

794,300 

805,600 

817,000 

828,000

920.73 

+289,900

June

836,800

845,700 

854,000 

862,400 

869,500

874,800 

881,000 

885,600 

891,500 

898,000

903,400 

907,700 

912,500 

915,700 

915,500

915,300 

915,800 

918,500 

922,800 

926,100

927,800 

929,700 

932,100 

934,100 

934,700

935,700 

937,400 

938,700 

938,900

940.53 

+109, 400

July

933, 100

927,300 

921,200 

914,900 

908,900

903,100 

897,500 

892,000 

886,700 

881,200

874,300 

866,700 

858,200 

849,200 

839,800

830,400 

821,000 

811,800 

803,000 

796,200

790,200 

786,000 

781,100 

776,300 

771,300

766,300 

761,200 

754,800 

747,300 

739,100 

730,800

901.83 

-206, 600

Aug.

721,900

712,700 

703,000 

693,300 

683,000

672,800 

662,600 

652,400 

642,400 

633,000

623,400 

613,900 

604,400 

594,800 

585,100

575,800 

566,600 

557,200 

547,800 

538,200

530,600 

523,000 

515,500 

508,100 

501,000

494, 100 

487,300 

481,100 

475,100 

469,900 

467,500

842.51 

-263,300

Sept.

466,000

464,500 

463,200 

461,800 

460,200

458,400 

456,500 

454,700 

452,600 

449,300

445,600 

442,300 

439,100 

436,200 

433,200

430,500 

427,800 

425,100 

422,500 

420,200

418,000 

415,700 

413,500 

411,400 

409,200

407,100 

406,200 

406,000 

405,900 

405.800

82&.19 

-61,700

Calendar year 1955.................... * +373,500

Water year 1955-56.................... * +336,200

t Elevation, in feet, at end of month. 

* Change in contents in acre-feet.
252 TULARE LAKE BASIN

Kings River below Pine Flat Dam, Calif.

Location. Lat 36°49'45", long 119°20'15", in NW£ sec. 2, T. 13 S., R. 24 E., on left bank 

0.7 mile downstream from Pine Flat Dam and 2.9 miles northeast of Piedra.

Drainage area. 1,542 sq mi.

Records available. January 1954 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 553.49 ft above mean sea level (levels by 

Corps of Engineers).

Extremes.--Maximum discharge during year, 10,400 cfs June 11 (gage height, 7.67 ft); minimum daily, 9.6 cfs Jan. 28.

1954-56: Maximum discharge, that of June 11, 1956; minimum daily, 7.5 cfs Jan. 17, 

1955.

Remarks. Records excellent. Flow completely regulated by Pine Flat Reservoir (see preceding page). Records of chemical analyses for the water year 1956 are given in

Cooperation.--Seventeen discharge measurements furnished by Kings River Water Association.

Rating tables, water year 1955-56 (gage height, In feet, and discharge 

In cubic feet per second)

Oct. 1 to July 31 Aug. 1 to Sept. 30

1.3

1.4

1.5

1.6 

1.8 

2.0 

2.2

7.5

11

17

24

47

84

129

2.5 

3.0 

3.5 

4.0 

5.0 

6.0 

7.5

220

455

790

1,230

2,560

4,640

9,650

2.7 

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

325

490

850

1,330

2,650

4,740

7,580

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

jt)

(*)

Oct.

202 

199

199

182

182

179

179

82

76

76

*62

62

62

64

64

64

64

64

59

59

59

59

59

59

59

51

50

*47

47 

47

»47

2,764

89.2

5,480

+2,620

588

Nov.

49

37

15

11

11

11

11

11

11

11

11

11

12

12

11

12

12

*11

12

12

13

12

22

38

39

39

39

38

39 

*39

610

20.3

1,210

+11,700

281

Dec.

43

38

39

29

28

30

29

47

50

31

42

43

43

46

49

*74

74

74

74

74

84

73

44

67

22

12

10

92

*176 

220

*240

1,997

64.4

3,960

+393,400

278

Jan.

240 

240

166

84

56

52

39

20

16

85

74

155

167

161

161

161

161

170

142

*139

139

142

115

158

130

15

14

1^6

109 

248

91

3,659.6

118

7,260

+197,000

298

Feb.

12 

88T

1,490

1,990

2,000

2,000

2,290

2,560

2,600

3,010

3,280

3,590

3,610

4,010

4,380

4,800

5,190

5,190

5,190

5,190

5,160

5,190

*5,160

5,220

5,410

5,410

5,410

5,410

*5.440

_

111,073

3,830

220,300

-122,300

460

Mar.

5,440 

5,440

5,660

5,660

5,690

5,960

6.080

4,280

2,940

2.810

2,990

3,220

3,260

3,240

3,340

3,520

3,630

3,570

3,680

3,610

3,740

3,810

3,540

3,610

3,630

3,900

3,940

3,870

3,940

3,850 

*3,790

125,640

4,053

249,200

-122,400

786

Apr.

3,810 

3,720

3,740

3,520

3,630

*3.960

3,850

3,810

3,790

3,790

3,420

2,460

2,260

1,920

1,850

1,860

*918

942

1,020

1,090

1,080

1,150

1,410

*1,700

1,140

768

600

57i

3§4

1,120

65,596

2,187

130,100

+108,500

965

May

1,190 

1,370

1,620

1,890

1,880

1,970

1,990

1,960

2,200

2,300

2,580

2,900

3,100

3,100

3,260

*3,790

3,980

4,090

4,330

4,470

*4,590

4,590

5,030

5,300

5,270

5,380

5,640

5,960

6,260

6, 380 

6.420

114,790

3,703

227,700

+289,900

1,628

June

*6,640 

6.610

6,640

6,960

6,770

6,930

7,060

*8,320

8,400

8,440

8,600

8,640

8,320

8,280

8,400

7,540

7,510

7,100

*6,960

6,900

,030

,200

,270

,760

,800

* ,650

,620

*8,000

8,680 

8. 800

228,830

7,628

453,900

+109,400

3,062

July

8, 880 

8,680

8,080

,900

,820

,650

,440

,370

,300

,340

,480

,540

,650

,650

,650

,650

,720

,720

,760

,820

,720

,650

,620

* ,580

,650

,480

,540

,370

7,270

7,100 

6.860

236,940

7,643

470,000

^06,600

3,443

Aug.

6.860 

6,830

6,680

6,560

6,650

6,530

6,440

6,380

6,240

5,960

5,960

5,900

5,820

5,850

5,880

5,650

*5,620

5,600

5,650

5,620

*4,610

*4,530

4,510

4,360

4,240

4,100

4,060

3,680

3,620

3,210 

*1,890

165,490

5,338

328,200

-263,300

2,788

Sept.

1,460 

1,430

1,320

1,380

1,400

1,500

1,470

1,470

1,500

2,090

2,180

2,070

*1,930

1,830

1,850

1,680

1,660

1,640

1,620

*1,520

1,500

1,470

1,450

1,420

1,380

1,360

770

454

*402 

555

43,561

1,452

86,400

-61,700

2,108

Adjusted for change In contents In, and evaporation from. Fine Plat Reservoir

Mean

Ae-ft

141 

8,690

222

13,190

Calendar year 1955: 

Water year 1955-56:

6,466 

397,600

3,327 

204,600

1,712 

98,460

2,075 

127,600

4,027 

239,600

8,444 

519,200

9,519 

566,400

Observed

Max 5,720 Min 7.5 Mean 1,504 Ao-ft 1,089,000 

Max 8,880 Mln 9.6 Mean 3,008 Ac-ft 2,184,000

4,339 

266,800

1,101 

67,690

451 

26,810

Adjusted

Mean 2,035 Ao-ft 1,473,000 

Mean 3,495 Ac-ft 2,537,000

* Discharge measurement made on this day.

t Change in contents, in acre-feet, in Pine Plat Reservoir; furnished by Corps of Engineers.

* Evaporation, In acre-feet, from Pine Plat Reservoir) furnished by Corps of Engineers.
TULARE LAKE BASIN 253

Kings River at Piedra, Calif.

Location. Lat 36°49'02", long 119°23'08", in NW£ sec. 8, T. 13 S., R. 24 E., on left bank 

0.5 mile downstream from highway bridge at Piedra, 2 miles downstream from Mill Creek, 

4 miles downstream from Pine Plat Dam, and 12 miles northeast of Sanger.

Drainage area. 1,694 sqmi.

Records available. September 1895 to September 1956. Prior to Oct. 1, 1924, published as 

"near Sanger."

Gage.--Water-stage recorder at present site since Feb. 7, 1931. Altitude of gage is 500 ft 

[from topographic map). Sept. 3, 1895, to Apr. 17, 1903, and Jan. 30, 1914, to Jan. 14, 

1920, staff gage and Apr. 18, 1903, to Jan. 25, 1914, and Jan. 15, 1920, to Feb. 6, 1931, 

water-stage recorder, at site 1,000 ft upstream at different datum.

Average discharge.--61 years, 2,305 cfs (1,669,000 acre-ft per year, adjusted for storage).

Extremes. Maximum discharge during year, 9,380 cfs Dec. 23 (gage height, 8.89 ft); minimum daily, 10 cfs Nov. 16.

1895-1956: Maximum discharge, 91,000 cfs Nov. 19, 1950 (gage height, 21.0 ft), from 

rating curve extended above 30,000 cfs on basis of slope-area determination of peak 

flow; minimum, that of Nov. 16, 1955.

Remarks. Records excellent. Flow regulated by Pine Plat Reservoir (see p. 251). 

Approximately 400 acres irrigated above station in Mill Creek area.

Revisions (water years). WSP 831: 1932-33(M), 1935-36(M). WSP 881: 1896-1909 (yearly 

summaries only).

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

0.2

.4

.7

1.0

1.5

2.0

2.5

196

343

550

3.0 

4.0 

5.0 

6.0 

7.0 

8.0 

9.0

820

1,530

2,470

3,660

5,180

7,150

9,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac -ft

J^(tt)

Oct.

208 

198

198

184

180

180 

180

92

78

78

*68

64

66

64

64

64

64

66

59

58

58

57

57

57

57

50

48

^14? 

46

*47

2,782

89.7

5,520

+2,620

588

Nov.

47 

42

15

11

11

11 

11

11

11

11

11

11

12

12

11

T2" 10

*n

12

12

13

12

22

36

37

38

38

37

38

38

604

20.1

1,200

+11,700

281

Dec.

*46 

39

.38

33

29

41 

32

44

52

43

46

44

44

46

48

66

70

70

72

72

83

125

5.580

5,360

2,260

864

722

482

448

420

*432

17,751

573

35,210

+393,400

278

Jan.

404 

376

293

187

156

140 

121

97

140- 83

138

204

224

216

224

254

232

232

204 *198

198

204

718

398

2,920

1,210

1,300

637

518

595 

364

13,205

426

26,190

+197,000

298

Feb.

*243

1,156-

1,800

2,320

2,320

2,320 

2,620

2,870

2,900

3,260

3,500

3,800

3,830

4,180

4,590

4,990

5,420

5,480

5,510

5,510

5,510

5,530

*5,620

5,660

5,790

5,800

5,790

5,770

5,800

119,833

4,132

237,700

-122,300

460

Mar.

5,790 

5,790

6,050

6,070

6,070

6,350 

6.500

4,670

3,230

5,110

3,300

3,500

3,540

3,500

3,620

3,790

3,900

3,840

3,930

3,870

3,970

4,020

3,770

3,810

3,840

4,100

4,170

4,080

4,140

4,040

*3, 980

134,340

4,334

266,500

-122, 400

786

Apr.

3,950 

3,860

3,840

3,660

3,720

4.080 

3,970

3,940

3,900

3,910

3,580

2,720

2,500

2,160

2,060

2,070

1,080

1,070

1,150

1,240

1,210

945

1,590

*1,890

1,260

856

727

750" 666

1,240

69,634

2,321

138,100

+108,500

965

May

1,540 

1,510

1,760

2,070

2,060

2,140 

2,170

2,140

2,490

2,640

2,900

3,100

3,300

3,280

3,600

4,000

4,200

4,400

4,600

4,700

*4,770

4,740

5,200

5,440

5,420

5,550

5,790

6,070

6,500

6,600

6,670

121,150

5,907

240,500

+ 289,900

1,628

June

6,930 

6,890

6,930

7,200

7,020

7,150 

7,520

8,700

8,780

8,850

8,950

9,020

8,680

8,700

8,780

7,950

7,900

7,400

7,220

7,110

7,280

7,480

7,520

8,050

8,100

*7,720

7,900

8,300

9,020

9,150

238,000

7,953

472,100

+109,400

3,062

July

9,150 

9,080

8,550

8,280

8,180

8,000 

7,780

7,700

7,650

7,650

7,720

7,780

7,980

7,950

7,980

7,890

8,000

8,000

8,020

8,100

8,020

7,920

7,880

7,850

7,880

7,750

7,800

7,650

7,550

7,320

1^040

246,190

7,942

488,300

-206,600

3,443

Aug.

*7.080 

7,040

6,860

6,750

6,820

6,730 

6,650

6,600

6,440

6,150

6,170

6,130

6,050

6,090

6,110

5,880

5,860

5,800

5,880

5,880

4,830

4,750

4,710

4,560

4,440

4,280

4,230

3,840

3,770

3,340

1, 980

171,706

5,539

340,600

-263,300

2,788

Sept.

1,520 

1,440

1,340

1,400

1,410

*1,510 

1,510

1,510

1,540

2,150

2.540

2,210

2,050

1,960

1,960

,780

,740

,730

,710

,570

,560

,540

,520

,480

,430

1,420

900

440

388

545

4S,401

1,513

90,050

-61,700

2,108

Adjusted for change in reservoir contents and evaporation

Mean 

Ao-ft

142 

8,750

222 

13,180

6,975 

428,900

3,635 

223,500

2,015 

115,900

2,557 

144,900

4,161 

247,600

8,649 

551,800

9,825 

584,600

4,637 

285,100

1,303 

80,090

512 

30,460'

Calendar year 1955: Max 5,800 

Water year 1955-56: Max 9,150

Min 

Min

Mean 1,597 

Mean 3,226

Ac-ft 1,156,000 

Ac-ft 2,342,000

Adjusted

Calendar year 1955: Wean 2,127 

Water year 1955-56; Mean 3,712

Ac-ft 

Ac-ft

1,540,000

2,695,000

Discharge measurement made on this day.
254 TULARE LAKE BASIN

Los Gatos Creek above Nunez Canyon near Coalinga, Calif.

Location.--Lat 36°12'55", long 120°28 I 10", on line between SW£ and SE£ of sec. 5, T. 20 

S., R. 14 E., on left bank 1.1 miles upstream from Nunez Canyon, 3.0 miles downstream 

from White Creek and 8 miles northwest of Coalinga.

Drainage area. 95.5 sq mi.

Records available.--October 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,100 ft (from topographic map).

Average discharge. 7 years, 2.41 cfs (1,740 acre-ft per year).

Extremes. Maximum discharge during year, 681 cfs Jan. 25 (gage height, 3.19 ft), from 

rating curve extended above 260 cfs by logarithmic plotting; no flow for several 

months.

1949-56: Maximum discharge, 1,250 cfs Jan. 25, 1952 (gage height, 3.70 ft, from 

floodmarks), from rating curve extended above 260 cfs by logarithmic plotting; no flow 

for several months each year.

Remarks. Records good except those for periods of doubtful gage-height record, which are 

fair. No regulation or diversion above station.

Revisions (water years). WSP 1215: 1950, drainage area.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge. In cubic" feet per second)

1.15

1.2

1.3

1.4

1.5

1.6

1.7

2.2 

4.5

1.8

1.9

2.0 

2.2 

2.4 

2.6 

2.8

24

38

62

125

194

278

384

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Zl

22

23

Z4

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

00"

0

0

0

o

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

326

29T

68

71

34

21

19

18

*22

870

28.1

1,730

Jan.

13

14

7.8

*5.2

5.6

9.8

5.2

4.5

3.9

3.0

2.8

2.4

2.1

1.9

1.9

1.7

1.7

1.6

1.4

1.9

2.1

1.4

1.3

1.4

194

108

110

36

30

23

18

616.6

19.9

1,220

Feb.

15

IS11

10

8.8

8.3

7.8

7.3

6.8

6.0

6.0

5.6

5.6

5.2

5.2

4.8

4.5

4.2

4.5

4.5

4.5

4.5

*7.3

6.0

5.2

4.8

3.9

3.6

3T6

187.5

6.47

372

Mar.

3.2

2.8

2.8

3.0

3.6

3.6

3.2

*3.4

3.4

3.0

2.8

2.6

Z.6

2.6

2.4

2.2

*2.1

1.7

1.7

1.6

1.6

1.4

1.3

1.3

1.2

1.2

1.2

1.3

1.2

T7o- 1.0

68.0

2.19

135

Apr.

1.6

1.6

1.3

1.2

*1.0

.9

Tf

.7

*.7

Z.8

4^5

3.0

2.8

2.6

2.2

2.1

1.6

1.3

1.0

.9

.8

.8

.8

.8

1.7

2.1

1.6

1.3

1.2

46.2

1.54

92

May

0.8

.8

.6

.6

.8

.9

1.0

1.3

*2.4

TA

1.7

1.4

1.2

.8

.6

.6

.5

.4

.3

.3

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

20.6

0.66

41

June

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

.1

*0

.1

.1

.1.1

0

.1

.1

.1

0

0

0

0

0

0

0

0

0

1.8

0.06

3.6

July

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 326 Mln o Mean 2.51 Ac-ft 1,820

Water year 1955-56: Max 326 Mln o Mean 4.95 Ac-ft 3,590

Peak discharge (base, 40 cfs). Dec. 23 (6 a.m.) 592 cfs (3.09 ft); Dec. 26 (4 p.m.) 172 cfs (2.34 

ft); Dec. 31 (6 a.m.) 187 cfs (2.38 ft)j Jan. 25 (9 a.m.) 681 cfs (3.19 ft).

* Discharge measurement or observation of no flow made on this day.

Note. Doubtful gage-height record, Dec. 23-31, Feb. 4-23; discharge computed from reconstructed 

graph based on recorded graph and weather records.
SAN JOAQUIN RIVER BASIN 255

North Pork San Joaquin River below Iron Creek, Calif.

Location.--Lat 37°36'50", long 119°14 I 00", in SE£ sec. 4, T. 4 S., R. 25 E., on right 

bank 0.8 mile downstream from Iron Creek and 27 miles northeast of town of Bass Lake.

Drainage area.--38.0 sq mi.

Records available.--October 1920 to July 1928 (fragmentary prior to July 1921), October 

1951 to September 1956 (no winter records).

Gage. Water-stage recorder. Altitude of gage is 6,800 ft (from topographic map). Prior 

to May 22, 1922, staff gages at same site and datum.

Average discharge. 6 years (1921-27), 113 cfs (81,810 acre-ft per year).

Extremes. Maximum discharge recorded during year, 3,860 cfs July 24 (gage height,

8.15 ft), from rating curve extended above 830 cfs by logarithmic plotting; minimum, 

0.4 cfs Nov. 13.

1920-28, 1951-56: Maximum discharge recorded, that of July 24, 1956; minimum, that 

of Nov. 13, 1955.

Remarks. Records good except those for periods of no gage-height record,, which are fair. 

No storage or diversion.

Cooperation. Water-stage-recorder graph and seven discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 1345: 1925-26(M), 1927, 1928(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to June 12 June 13 to Sept. 30

3.37

3.5

3.6 

3.9 

4.2

1.0

3.0

5.6

18

35

4,5 

5.0 

5.5 

6.0 

7.0

62

135

275

540

1,600

4.0 

4.2 

4.5 

5.0

22

34

62

135

5.5 265

6.0 520

7.0 1,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

3.3 

3.3

3.0

3.0

3.0

2.8

2.7

2.7

2.6

2.6

2.6

2.4

2.2

2.4

2.4

2.4

2.4

2.6

*3.3

3.3

2.8

2.8

2.4

2.2

2.2

2.2

2.2

2.2

2.1 

2.0

ill

79.9

2.58

158

Nov.

1.6 

1.6

1.8

1.6

1.6

1.8

1.6

1.3

1.3

1.2

1.2

1.2

iiO

T5.

4.8

5.1

7.3

7.6

10

13

12

13

12

11

12

14

II

17

15 

14

205.8

6.86

408

Dec.

M18

16

16

18

24

21

24

24

26

28

27

27

27

24

21

20

25

53

36

522

1.120

224

149

118

92

68

53 

46

45

2,953

95.3

5,860

Jan.

42

40

36

35

34

34

34

34

33

12

38

46

40

37

64

91

52

42

39

37

38

42

54

38

44

54

46

42

36

34 

32

1,300

41.9

2,580

Feb.

-

-

-

Mar.

.

_

-

Apr.

-

-

-

May

220 

250

300

500

350

250

230

200

200

180

180

170

140.

140

170

*244

270

300

330

350

450

700

800

700

600

700

650

600

650

CKrt DOU

650

12,124

391

24,050

June

600 

650

700

650

600

550

600

650

700

750

700

700

*650

600

500

450

500

550

600

600

550

550

600

600

550

600

650

900

55O

18,550

618

36,790

July

520 

500

480

480

450

370

480

480

480

450

400

350

320

300

300

*308

320

498

450

602

521

812

450

1.000

548

506

661

450

300

251

230

14,267

460

28,300

Aug.

lH

141

135

126

126

135

141

143

147

139

120

116

121

115

114

110

109

106

98

92

91

91

98

102

82

78

*77

78

72

77

3,556

115

7,050

Sept.

82 

78

73

68

61

54

46

40

34

33

46

40

30

26

25

*25

25

27

36

39

31

28

27

27

26

24

54

46

35

29

1,215

40.5

2,410

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ac-ft

* Discharge measurement made on this day.

Hote^ No gage-height record Jan. 21-31, May 1-15, May 17 to July 15; discharge estimated on basis 

of 1 discharge measurement, fragmentary gage heights, and records for San Joaquin River at Miller 

Crossing.
256 SAN JOAQUIN RIVER BASIN

San Joaquin River at Miller Crossing, Calif.

Location. Lat 37°30'35", long 119°11'50", in NE£ sec . 11, T. 53., R. 25 E., on right 

bank 2.4 miles downstream from North Fork San Joaquin River, 4.6 miles east of Clover 

Meadow ranger station, and 23 miles northeast of town of Bass Lake.

Drainage area. 254 sq mi.

Records available . October 1921 to July 1928, October 1951 to September 1956. Prior to 

October 1954, published as Middle Fork San Joaquin River at Miller Bridge.

Gage . Water-stage recorder. Altitude of gage is 4,570 ft (from topographic map). Prior 

to Mar. 24, 1922, staff gage at same site and datum.

Average discharge. --10 years (1922-27, 1951-56), 578 cfs (418,500 acre-ft per year).

Extremes . --Maximum discharge during year, 16,600 cfs Dec. 23 (gage height, 21.28 ft),

from rating curve extended above 5,100 cfs on basis of contracted-opening determination 

of peak flow; minimum observed, 38 cfs Oct. 14.

1921-28, 1951-56: Maximum discharge, that of Dec. 23, 1955; minimum observed, 27 cfs 

Dec. 3, 1921.

Remarks . --Records good except those for period of no gage-height record, which are fair. 

No storage or diversion.

Cooperation. Water-stage-recorder graph and 10 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

9.1

9.3

9.5

10.0

10.5

11.0

12.0

35

48

64

113

178

290

615

13.0

14.0

15.0

17.0

18.0

20.0

1,090

1,810

2,810

5,580

7,440

12,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

j£

44

43

43

43

42

41 

41

40

40

40

40

39

38

39

40

*39

39

40

41

41

40

40

40

40

40

40

40

40

40

40

1,258

40.6

2,500

Nov.

80

2,400

80

4,760

Dec.

390

*10.200

4,970

1,990

1,480

1,120

845

714

612

542

31,053

1,002

61,590

Jan.

514

475

431

404

380

365

350 

347

332

526

362

464

431

410

704

976

590

500

440

416

389

404

545

395

425

576

482

461

410

374

344

14,022

452

27,810

Feb.

317

302

299

308

302

282

268 

265

253

253

253

268

271

271

263

236

236

229

217

213

209

213

230

230

230

224

224

220

222

7,306

252

14,490

Mar.

222

229

248

258

253

226

220 

230

260

290

323

305

290

302

305

353

416

461

500

510

*566

608

698

830

885

855

780

775

905

960

900

14,963

483

29,680

Apr.

722

604

545

517

584

710

880 

1,010

1,190

1,190

920

775

682

622

601

612

650

698

780

982

1,180

1,330

1,580

1.780

1,750

1,620

1,270

1,090

1,080

1,170

29,124

971

57,770

May

1,320

1,470

1,820

2,870

1,770

1,460

1,330 

1,130

1,190

1,030

1,040

920

815

800

1,020

1,370

1,530

1,660

1,890

1,910

2,890

3,950

*3,460

3.980

3,520

3,860

3,780

3,390

3,640

3,760

3,640

68,215

2,200

135,300

June

3,380

3,470

3,820

3,640

3,190

3,000

3,300 

3,500

3,770

4.000

3,900

3,810

3,740

3,390

2,810

2.560

2,810

3,170

3,520

3,280

3,070

3,220

3,430

3,420

3,170

3,220

3,580

3,820

*3,640

3,120

101,750

3,392

201,800

July

2.590

2,260

2,010

2,000

1,990

1,460

2,020 

2,030

2,010

1,890

1,710

1,550

1,400

*1,290

1,260

1,290

1,300

1,440

1,610

1,830

1,830

2,080

1,710

2,200

2,060

1,690

1,720

1,510

1,290

1,090

994

53,114

1,713

105,400

Aug.

935

790

678

629

594

566

562 

570

580

573

576

542

500

503

489

472

454

447

434

416

392

380

371

374

*371

344

329

314

314

296

296

15,091

487

29,930

Sept.

508

299

293

276

256

243

231 

209

190

180

188

190

175

157

149

144

139

137

141

172

168

155

148

142

141

137

190

243

192

169

5,762

192

11,430

Calendar year 1955 : Max 10,200 Min - Mean 547 Ac-ft 396,200

Water year 1955-56 : Max 10,200 Min - Mean 940 Ac-ft 682,500

Peak dis charge (bas

cfs (14.39 ft); May 4 

June 10 (9:30 p.m.) 4

e 2,000 cfs). --Dec. 23 (8 a.m.) 16.600 cfs (21.28 ft); Apr. 24 (9 D.m.) 2.170

6:30 a.m.) 3,430 cfs (15.51 ft); May 22 (9:30 p.m.) 4,880 cfs (16.55 ft); 

,880 cfs (16.55 ft); June 28 (10 p.m.) 4,560 cfs (16.34 ft); July 24 (5:30 pan.)

5,210 cfs (16.77 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 22 to Dec. 22; discharge estimated on basis of 1 discharge measurement and records for San Joaquin River above Big Creek and North Fork San Joaquin River below 

Iron Creek.
SAN JOAQUIN RIVER BASIN 

Granite Creek near Cattle Mountain, Calif.

257

Location. Lat 37 8 31'35", long 119°15'30", in NE£ sec. 5, T. 5 S., R. 25 E., on right bank 

0.7 mile downstream from confluence of East and West Porks of Granite Creek, 1.6 miles 

northwest of Cattle Mountain, and 21 miles northeast of town of Bass Lake.

Drainage area.--47.8 sq mi (revised).

Records available, December 1921 to July 1928, May 1952 to September 1956 (no winter records).

Gage. Water-stage recorder. Altitude of gage is 6,800 ft (from topographic map). Prior 

to May 14, 1922, staff gage at same site and datum.

Average discharge. 5 years (1922-27), 102 cfs (73,840 acre-ft per year).

Extremes.--Maximum discharge recorded during year, 1,790 cfs May 22 (gage height, 8.52 ft); 

minimum not determined.

1921-28, 1952-56: Maximum discharge recorded, 2,210 cfs June 27, 1922 (gage height, 

8.83 ft); no flow at times during 1924, 1926.

Remarks. Records good except those for periods of no gage-height record, which are fair.

Cooperation. Water-stage-recorder graph, and seven discharge measurements furnished by 

Southern California Edison Co. In connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1 to Nov. 14)

3.4

3.5

3.6

3.7

3.8

.2 

.5

1.0 

1.6 

2.2

4.2 

4.4 

4.6 

5.0 

5.5

3.8

6.5

11

19

43

95

6.5

7.0 

7.5 

8.0 

9.0

182

305

485

750

1,210

2,420

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0) 4.

.3

.3 

.2

7?

.3

.2

.2

.2

.2

.2

.2

.2

.2

**.4

.2

.2

.2

.2

.4

.4

.4 

.4

.4

.4

**.3

.3

.3

.4

.3 

.3

8.8

0.28

18

Nov.

0.3

,4

'.3

.3

.3

.3

.3

.3

.4

.3

.3

.3

.3

> a.l

6.1

0.20

12

Dec.

.

-

-

Jan.

_

-

-

Feb.

.

.

-

Mar.

_

.

-

Apr.

.

.

-

May

8300

a350

a450 

8700

a450

a350

a300

a270

a250

a230

a230

a200

*a!70 T58"

322

481

513

575

605

650

1,040

1,290 

1,280

1,050

983

1,090

956

938

1,020

1,030

920

19,181

619

38,040

June

884

965

1,020 

893

758

790

920

947

965

1,010

911

*920

830

687

585

605

694

790

694

626

644

708 

758

644

605

662

766

774

60S

497

23,157

772

45,930

July

445

358

340 

350

333

336

350

350

322

262

214

188

166

151

151

151

*145

291

259

484

317

230 

199

336

306

327

327

226

116

87

77.

8,194

264

16,250

Aug.

68

5?

44

38

35

32

31

31

31

29

28

24

20

20

18

17

16

14

13

12

11

10 

9.0

8.3

7.9

7.7

6.9

6.7

6.0 

5.6

*5.2

658.3

21.2

1,310

Sept.

4.8

4.4

3.9 

3.6

3.5

3.1

2.8

2.5

8.2

2.1

2.0

1.8

1.7

1.5

1.4

1.2 n.i

47?

1.6

2.0

1.8 

1.6

2.0

1.3

1.1

1.8

10 "5". 4

3

Q o

77.8

2.59

154

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

* Discharge measurement made on this day.

** Field estimate made on this day.

a No gage-height record; discharge estimated on basis of records for nearby streams.
258 SAN JOAQUIN RIVER BASIN

Florence Lake near Big Creek, Calif.

Location. Lat 37°16', long 118°58', in NW$ sec. 1, T. 83., R. 27 E., in gatehouse of 

ward tunnel intake, near dam on South Fork San Joaquin River, 16 miles northeast of 

town of Big Creek.

Drainage area. 171 sq mi.

Records available. November 1925 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Southern California Edison Co.).

Extremes. Maximum contents during year, 65,000 acre-ft July 12 (elevation, 7,328.16 ft); 

minimum, 307 acre-ft Dec. 2 (elevation, 7,225.27 ft).

1925-56: Maximum contents, 65,700 acre-ft July 16, 1935 (elevation, 7,328.8 ft); no 

available contents Oct. 2-4, 1926, Nov. 30 to Dec. 2, 1927.

Remarks. Lake Is formed by multiple-arch concrete dam; storage began In April 1925.

Usable capacity, 64,400 acre-ft between elevation 7,220.9 ft (throat of venturi tube in 

Ward tunnel Intake) and 7,327.5 ft (top of spillway drum gates) above mean sea level. 

Additional storage of 168 acre-ft is not available for diversion. Water Is diverted 

through Ward tunnel to Huntington Lake and used for power development In Big Creek 

plants. Records, Including extremes, show usable contents at 12 p.m.

Cooperation.--Record of contents furnished by Southern California Edison Co. In connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, and 

capacity. In acre-feet)

7,225

7,230

7,235

7,240

7,245

7,250

7,250

281

887

1,770

2,980

4,670

6,650

11,600

7,270

7,280

7,290

7,300

7,310

7,329

17,800

24,600

32,000

39,900

48,300

65,900

Contents, In acre-feet, at 12 p.m., water year October 1955. to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

50. 500 

50, 100 

49,500

48,700

47,800

46,900

46,000

45,000

44, 100

43,200

42,300

41, 400

40, 600

40,100

39,900

39,000

38,400

38,400

38,400

38,300

38,100

37,600

37,000

36,200 

35,300

34,100

32,500

30,700

28,700

27,100

25,900

7,281.80

-25, 200

Nov.

25,400 

25,500 

25, 500

24,900

24,000

23,000

21,500

19,600

18,400

18,500

18,500

18,500

18,500

18,500

17,500

14,800

12,900

12,900

13,000

11,400

8,430

6,310

4,290

2,520 

1,270

544

366

330

315

508

7,225.28

[-25, 600

Dec.

309 

|07 

3T5

312

315

370

348

374

380

370

364

359

354

348

344

337

332

328

338

370

375

1,560

7,240

9,520 

10,900

12,200

13,100

13,800

14, 400

15,000 

15,400

7,266.38

+15, 100

Jan.

15,800 

16,300 

16,700

17,000

17.400

16, 200

14,900

13, 800

12,700

11,500

10, 400

9,320

8,100

6,940

6,520

6,380

5,210

3,900

2,580

1,460

709

596

59?

597 

666

643

631

653

652

646

637

7,228.15

-14,800

Feb.

606 

S7<5 

547

516

486

458

430

402

402

402

405

412

414

407

403

395

392

380

386

378

379

384

381

381 

390

378

380

381

575

7,225.95

-262

Mar.

389 

404 

420

435

450

465

481

496

512

528

545

561

577

577

583

609

627

643

644

648

666

678

723

763 

764

745

735

760

787

783 

755

7,229.68

+380

Apr.

711 

691 

675

674

700

745

739

732

784

784

710

654

623

602

595

598

609

618

656

728

786

887

1,030

1.130 

1, 130

1,080

968

862

835

842

7,229. 68

+87

May

915 

1,020 

1,270

1,480

1,230

1,030

887

809

791

735

709

683

667

653

798

988

1,110

1,370

1,530

1,620

2,350

3,540

5,200

6,340 

6,660

7,480

8,540

10, 100

12,500

15,000 

17.400

7,269.41

+16,600

June

19.300 

21,300 

23,900

27,600

30, 700

32,700

34,600

36,800

39,300

42,000

44, 400

46,600

49,500

53,300

54,500

54, 400

54,700

55,600

56,900

57,800

58,500

59,300

60, 300

61,000 

61,300

61,400

61,700

62,000

62, 200

61, 800

7,324. 77

+44,400

July

61,600 

61,500 

61,200

61, 200

61,500

61,800

62,200

62,600

63, 100

63,400

64,200

65.000

64, 500

64,300

64,200

64,200

64, 400

64, 600

64, 800

64,800

64, 500

64,800

64,300

64,700 

64,100

64, 500

64, 500

64, 100

64, 100

64, 200 

64,300

7,327.34

+2,500

Aug.

64. 100 

64,000 

64,000

63, 800

63,300

62,700

62,100

61,800

61,400

61, 100

60,700

60, 300

59,800

59,400

58,900

58,400

58,000

57,400

56,900

56, 300

55,700

55,000

54, 400

53,700 

52, 800

51,900

51,000

50, 100

49,200

48,300 

47.400

7,309.00

-16,900

Sept.

46.500 

45, 600 

44,700

, 43,800

43, 000

42,200

41,300

40, 400

59.500

39,800

40,000

40, 200

40, 400

40, 600

40, 800

40,900

41, 100

41,200

41,400

41,600

41,800

42,000

42, 100

42,300 

42,400

42,500

42, 800

42,900

43, 100

43,300

7 ,304,17

-4, 100

Calendar year 1955.................... t +15,100

Water year 1955-56.................... * -7,800

t Elevation, In feet, at end of month. 

* Change In contents In acre-feet.
SAN JOAQUIN RIVER BASIN 

Ward tunnel at intake, Calif.

259

Location. La t 37°16', long 118°58', in 

entrance to tunnel.

sec. 1, T. 8 S., R. 27 E., in gatehouse at

Records available. --April 1925 to September 1956.

Gage. --Water-stage recorder, concrete control, and venturl meter. Datum of gage is 

7,213.89 ft above mean sea level (levels by Southern California Edison Co.).

Average discharge. 30 years (1925-31, 1932-56), 270 cfs (195,500 acre-ft per year). 

Extremes .--1925-56: Maximum daily discharge, 1,990 cfs Apr. 30, 1926; no flow at times.

Remarks . Records excellent. Ward tunnel diverts from Florence Lake, a reservoir on South 

Pork San Joaquin River, to Huntington Lake for use in Big Creek powerplants.

Cooperation. --Water-stage-recorder graph, and rating table for venturi meter furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

294

207

356

408

455

471

469

466

464

462

460

457

404

256

154

407

351

2>5

TTs

45

151

218

518

592

457

638

851

879

1.010

787 

580

12,791.6

415

25,570

Nov.

206

1.8

1.8

304

484

480

774

880

553

1.7

1.7

1.7

1.7

1.8

558

1,560

973

1.4

174

981

1.560

1,070

969

832

677

419

131

65

52

44

23,387.0

446

26,550

Dec.

44

42

44

44

47

66

75

68

98

85

81

77

75

70

65

60

57

55

56

75

83

294

1.4

1.4

1.6

1.4

1.6

1.6

1.7

1.7

1*6

1,671.0

53.9

3,310

Jan.

1.6

1.4

1.4

1.4

1.4

145

735

717

750

742

745

742

740

737

474

296

737

755

745

714

523

200

148

143

69

174

194

220

220

204

186

12,616. 2

407

25,020

Feb.

155

134

151

131

132

123

115

115

106

111

111

115

117

117

111

106

100

97

92

92

89

91

94

93

92

96

88

88

88

3,130

108

6,210

Mar.

84

M

96

103

107

103

93

100

113

123

156

152

128

153

131

146

172

187

203

203

214

232

250

507

559

319

289

290

355

559

348

5,865

189

11,650

Apr.

285

222

196

185

201

245

319

363

404

435

388

327

282

253

257

256

245

254

268

516

581

416

500

587

615

600

554

462

409

430

10,585

353

21,000

May

548

700

747

866

809

673

566

471

448

404

561

555

507

296

543

453

589

750

844

854

959

1,180

1.500

1,290

1,290

1,260

1,220

918

711

729

754

22,955

740

45,550

June

774

789

646

SB 1'

694

911

922

929

936

948

1,070

791

2.6

862

1,460

1,430

1,420

1,420

1,470

1,500

1,500

1,500

1,510

1,510

1,510

1,510

1,510

1,520

1,590

32,724.3

1,091

64,910

July

1.650

1,580

1,530

1,380

1,240

1,240

1,240

1,240

1,240

1,240

871

607

829

986

984

893

828

927

841

574

662

808

255

94

272

514

486

351

406

791

889

27 , 408

884

54,560

Aug.

924

684

587

598

707

744

673

597

597

595

595

593

591

591

590

590

588

588

584

584

582

579

571

628

672

669

666

663

660

656

651

19,603

632

58,880

Sept.

648

645

643

640

575

558

605

658

531

2.1

2.0

2.0

2.0

2.0

2.0

1-B

its

1.8

1.8

2.1

2.1

2.0

2.0

2.0

2.0

1.8

2.0

2.0

2.0

2.0

5,522.5

184

10,950

Calendar year 1955: Max 1,560 Min 1.4 Mean 260 Ac-ft 187,900

Water year 1955-56: Max 1,650 Min 1.4 Mean 460 Ac-ft 333,700
260 SAN JOAQUIN RIVER BASIN 

South Fork San Joaquin River near Florence Lake, Calif.

Location Lat 37 "16 '20", long 118°57'50", in SE^ sec. 36, T. 7 S., R. 27 E. , on left bank 

Just downstream from spillway of Florence Lake Dam, 6 miles upstream from Bear Creek.

Drainage area. 171 sq mi.

Records available. --December 1921 to September 1956.

a *e. r7ltase recorder, Parshall flume and concrete control. Altitude of gage is 

,200 ft (from topographic map).

Average discharge . 33 years (1922-31, 1932-56), 301 cfs (217,900 acre-ft per year) 

combined flow of South Fork San Joaquin River and Ward tunnel at intake.

discharge during year, 2,180 cfs July 25 (gage height, 13.87 ft); miniMaximum ^schafS^, 4,320 cfs June 6, 1940 (gage height, 15.38 ft); no flow

Remarks. Records excellent. Flow regulated by Florence Lake beginning in 1925 (see p 258) 

and by diversion into Ward tunnel (see preceding page).

Cooperation. --Water-stage-recorder graph and six discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

9.0 

9.2

9.4

9.5

2.4 

4.0

9.7

10.0

10.5

11.0

12.0

13.0

14.0

57

119

256

425

895

1,510

2,290

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

fct

3.7

4. 1

4.0

4.0

4.0

4.0

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.8

3.8

3.8

3.8

3.7

3.7 

3*6

3.6

119.0

3.84

236

Nov.

3.3 

2.9

2.9

*2.9

2.9

2.9

2.9

3.0

2.9

2.9

3.0

3.3

3.3

3.3

3.3

3.3

3.2

3.2

3.0

3.0

3.0

g.7

3.1

5.7

3.5

3.3

3.1

3.1

3.0

3.0

92.9

3.10

184

Dec.

iul 

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.7

8.7

7.3

4.6

4.8

4.6

4.5

4.5

4.5 

4.5

116.8

3.77

232

Jan.

4.5 

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.4

4.4

Ail

4.4

4.3

4.3

4.6

4.2

4.0

3.8

3.8

3.6

3.4

3.4

3.3

3.3

3.3

3.3

3.3

3. 2

470

3.3

3.3

123.5

3.98

245

Feb.

3.6 

3.1

3^0

3.2

3.1

4.0

3.4

3.3

3.9

3.3

3.3

3.3

3.9

3.6

5.1

5.5

3.2

3.9

3.1

3.2

3.1

3.2

3.3

3.3

3.3

4.8

4.3

3.2

106.8

3.68

212

Calendar year 1955: Max 8.7 Mln 0

Mar.

3.3 

3.3

3.3

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.4

3.4

3.4

3.5

3.6

3.6

3.6

3.6

3.7

3.7

3.8

3.8

3.8

3.7

3.7

3.7

3.7

3.6

3.7

109.5

3.53

217

Apr.

3.6 

3.5

3.5

3.5

lil

3.4

3.4

3.4

3.4

3.4

3.4

3.6

3.5

3.6

3.4

3.4

3.4

3.

3.

3.

3.

3.

3.

3.

3.4

3.8

3.5

3.4

3.6

1*0

104.3

3.48

207

May

4.0 

4.0

4.2

4.5

4.1

4.1

4.0

4.2

4.2

3.9

3.9

frt

3.8

4.0

4.1

4.4

4.9

5.2

5.1

5.2

5.3

5.6

6.1

5.9

6.0

6.1

6.2

6.4

6 . 6 

6.6

150.4

4.85

298

June

77z

7.3

7.5

7.8

7.8

7.9

8.2

8.3

8.4

8.5

8.7

8.9

9.9

10

10

10

10

10

10

15

19

107

*294

*396

483

*594

654

830

762

4,327.5

144

8,580

July

299 

14

11

11

11

11

11

11

11

11

11

95

387

18

11

11

11

15

358

1,080

1,090

748

1,650

1,490

1.850

1,070

1,300

1,270

781 

20311

13,861

447

27,490

Aug.

11 

11

11

11

*11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

10

10

10

10

10

10

. 10 

9.9

 L

331.7

10.7

658

Sept.

9.8 

9.7

9.7

11

14

12

10

10

9.4

9.4

9.4

9.4

7.4

5.5

5.5

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.7

5.6

5.6

5 a

. 0

226.3

7.54

449

Mean 3.76 Ac-ft 2,730

Water year 1955-56: Max 1,850 Mln 2 .7 Mean 53.7 Ac-ft 39,010

Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 261

Bear Creek near Lake Thomas A. Edison, Calif.

Location. Lat 37°20'20", long 118°58'20", in SWi sec. 12, T. 7 S., R. 27 E. (unsurveyed), 

on right bank 0.2 mile upstream from diversion dam, 1.7 miles upstream from mouth, 

2.1 miles south of Lake Thomas A. Edison, and 2.4 miles northeast of Mono Hot Springs.

Drainage area. 53.5 sq mi.

Records available.--October 1921 to September 1956. Prior to October 1954, published as - 

near Vermilion Valley."

Gage.--Water-stage recorder. Altitude of gage is 7,400 ft (from topographic map). 

Average discharge.--35 years, 89.9 cfs (65,080 acre-ft per year).

Extremes. Maximum discharge during year, 1,680 cfs July 26 (gage height, 7.12 ft); minimum, 2.9 cfs Nov. 12.

1921-56: Maximum discharge, that of July 26, 1956; minimum recorded, 1.2 cfs 

Sept. 29 to Oct. 5, 1924.

Remarks. Records good except those for periods of ice effect, which are fair. No storage 

or diversion above station.

Cooperation.--Water-stage-recorder graph and nine discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 1345: 1922-23, 1924(M), 1925-35.

Rating table, water year. 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.9

3.0

3.1

3.2 

3.4

2.4

4.4 

6.9

11

26

3.8 

4.2 

4.6 

5.0 

6.0

70

135

235

400

940

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

ia4.4

4.4

4.4

4.4

4.1

4.1

£.9

3.9

3.9

3.9

3.9

3.9

4.1

4.1

4.4

4.4

4.1

4.1

4.1

3.9

4.1

4.1

4.1

3.9

4.1

4.1

3.9

4.1

*4.1

4.1

127.4

4.11

253

Nov.

3.7

3.7

4.4

3.9

4.1

4.4

4.1

4.1

4.1

4.1

4.1

3.7

3.9

4

5

5

6

8

10

10

10

10

11

11

12

12

12

12

12

11

214.3

7.14

425

Dec.

14

T5

20

20

20

20

50

40

20

30

3tO

20

20

15

15

15

15

21

22

33

40

286

517

190

175

155

100

90

80

60C("l bu

2,208

71.2

4,380

Jan.

55

50

45

40

35

40

40

35

35

li

36

37

36

37

40

40

45

42

41

39

38

37

39

40

35

40

40

40

40

40

40

1,231

39.7

2,440

Feb.

64

66

58

50

50

48

47

44

46

40

37

37

37

37

37

37

34

35

36

30

30

28

29

30

30

30

30

30

30 *

1,137

39.2

2,260

Mar.

30

28

27

30

30

29

3030'

36

39

40

40

40

40

40

45

55

58

59

62

66

67

79

96

95

89

82

89

121

101

69

1,742

56.2

3,460

Apr.

70

45

40

40

45

73

89

100

121

115

89

73

55

50

45

50

64

72

79

100

*113

125

153

168

165

147

113

96

95

110

2,700

90.0

5,360

May

137

165

214

238

162

131

113

98

100

89

86

79

11

75

103

149

162

182

192

223

348

435

510

515

395

410

470

465

510

535

520

7,882

254

15,630

June

480

*490

505

505

475

460

520

550

583

622

610

622

627

*556

420

390

445

530

594

*545

530

566

616

644

616

622

682

720

*764

688

16,977

566

33,670

July

556

480

435

425

435

435

440

455

465

440

395

360

318

286

288

302

310

314

*375

450

485

480

475

525

540

£21

607

430

360

310

286

13,151

424

26,080

Aug.

252

205

178

155

141

133

129

135

141

139

141

131

119

121

*121

115

112

110

105

96

90

86

84

83

80

76

73

70

70

SI

67

3,625

117

7,190

Sept.

68

68

67

64

61

57

55

50

47

46

44

43

41

38

36

*34

32

31

33

40

39

37

35

33

33

S3.

44

55

50

46

1,357

45.2

2,690

Calendar year 1955: Max 738 Mln 3.7 Mean 75.7 Ae-ft 54,770

Water year 1955-56: Max 764 Mln 3.7 Mean 143 Ac-ft 103,800

Peak discharge (base. 440 efsl. Dec. 23 (4:30 a.m.) 1.330 cfs (6.62 ft); June 28 (10:30 p.m.) 

1,010 cfs (6.11 ft)j July 26 (5 p.m.) 1,680 cfs (7.12 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 14-28, Dec. 2-17, Dec. 27 to Jan. 9, Jan. 15- 

17, 24-31, Feb. 11-14, 16, 24-28, Mar. 1, 5, 7, 11-16, Apr. 2-5, 13-16.

493801 O - 59 - 18
263 SAN JOAQUIN RIVER BASIN

Lake Thomas A. Edison near Big Creek, Calif.

Location.--Lat 37°22 I 10", long 118°59'15", In sec. 26, T. 6 S., R. 27 E. (unsurveyed), in 

outlet works of dam on Mono Creek at lower end of Vermilion Valley, 18.1 miles northeast of town of Big Creek.

Drainage area. 88.9 sq mi.

Records available. October 1954 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Southern 

California Edison Co.).

Extremes. 1954-55: Maximum contents during water year, 59,100 acre-ft July 21 (elevation, 7,603.7 ft).

1955-56: Maximum contents during water year, 125,100 acre-ft Aug. 4 (elevation, 

7,642.55 ft).

1954-56: Maximum contents, that of Aug. 4, 1956.

Remarks. Lake is formed by earth-fill dam; dam completed and storage began on Oct. 12, 

1954. Usable capacity. 125,000 acre-ft between elevations 7,508.9 ft (invert of outlet 

works) and 7,642.5 ft (top of gates in service spillway) above mean sea level. Water 

is released for diversion to Ward tunnel via Mono Creek diversion works. Records, including extremes, show usable contents at 12 p.m.

Cooperation. Record of contents furnished by Southern California Edison Co. in connection 

with a Federal Power Commission project.

Capacity table, Oct. 1, 1954, to Sept. 30, 1956 (elevation, in feet, 

and contents, in acre-feet)

7,515.8

7,520

7,525

7,530

7,535

7,540

7,545

7,550

7,555

23

64

156

297

513

928

1,830

3,570

6,150

7,560

7,570

7,580

7,590

7,600

7,610

7,620

7,630

7,643

9,520

18,100

28,500

40,500

53,800

68,600

85,000

102,400

126,000

Contents, in acre-feet, at 12 p.m., water year October 1954 to September 1955

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

-

-

_

-

.

_

-

-

-

.

23

25

41

52

64

74

84

94

105

114

122

133

142

151

164

174

184

194

204

213

7,527.2

+213

Nov.

224 

232

241

250

256

262

271

287

308

325

343

362

3S3

408

426

445

470

502

525

538

563

589

610

552" 618

589

603

603

575

550

7,535.6

+337

Dec.

538 

538

532

525

525

525

544

563

589

610

632

654

679

703

728

756

784

813

843

864

896

928

966

1,000

1,040

1,080

1,110

1,160

1,190

1,220

1,260

7,542.3

+710

Jan.

1,290 

1,530

1,360

1,400

1,440

1,490

1,530

1,550

1,550

1,550

1,570

1,590

1,620

1,640

1,660

1,690

1,710

1,760

1,780

1,810

1,830

1,890

1,940

2,000

2,020

2,020

2,050

2,080

2,080

2,100

2,170

7,546.2

+910

Feb.

2.170 

2,200

2,230

2,230

2,260

2,290

2,320

2,350

2,350

2,380

2,410

2,410

2,450

2,480

2,520

2,550

2,620

2,690

2,720

2,800

2,800

2,830

2,870

2,910

2,950

2,990

3,030

5.100

7,548.9

+930

Mar.

3,100 

3,100

3,100

3,100

3,100

3,100

5.060

3,060

3,100

3,100

3,100

3,100

3,100

3,100

3,100

3,100

3,060

3,100

3,100

3,140

3,140

3,140

3,140

3,140

3,180

3,180

3,270

3,270

3,310

3,350

3.400

7,549.6

+300

Apr.

3,480 

3,440

5.400

3,400

3,400

5,400

5,400

5,400

3,400

3,400

3,400

5,400

5,400

5,570

5,610

3,570

3,520

3,570

3,570

3,570

3,610

5,610

5,750

3,940

4,120

4,320

4,420

4,620

4,770

4.820

7,552.6

+1,420

May

4.880 

4,880

4,880

4,880

4,880

4,930

5,250

5,520

5,860

6,150

6,650

7,140

7,660

8,140

8,570

8,850

9,150

9,600

10,100

10,400

11,800

12 , 800

14,000

15,000

15,700

16,500

17,600

18,600

20,000

21,200

22jlO_Q

7,574.0

+17,500

June

22.900 

23,500

24,400

25,500

26,800

28,500

50,500

52,600

34,900

37,100

58,900

40,300

41,500

42 , 500

43,700

44,400

45,400

46,300

47,200

48,300

49,200

50,200

51,000

51,700

52,400

52 , 900

53,500

55,900

54,500

55.200

7,601.0

+35,100

July

55,600 

56,000

55,900

55,800

55,800

55,600

55,600

55,600

55,600

55,800

56,200

56,500

56,800

57,200

57,500

57,800

58,000

58,300

58,600

58,800

59.100

58,800

58,800

58,500

58,200

57,800

57,200

56,800

56,300

55,800

55.200

7,601.0

0

Aug.

54.600 

54,100

53,800

53,200

52,800

52 , 700

52 , 700

52,700

52 , 700

52,700

52,800

52,900

52,800

52,800

52 , 700

52,500

52,400

52,200

52,100

52,000

51,800

51.700

51,700

51,700

51,700

51,700

51,700

51,700

51,700

51,700

51,700

7,598.5

-3,500

Sept.

51.500 

51,500

51,500

51,500

51,500

51,500

51,500

51,500

51,500

51,500

51 , 500

51,500

51,500

51,400

51,400

51,400

51,400

51,400

51,400

51,400

51,400

51,400

51,400

51.500

51,300

51,500

51,300

51,300

51,300

51,300

7,598.2

-400

Calendar year 1954....................

Water year 1954-55.................... t +51,500

t Elevation in feet at end of month. 

* Change in contents in acre-feet.
SAN JOAQUIN RIVER BASIN

Lake Thomas A. Edison near Big Creek, Calif.--Continued 

Contents, in acre-feet, at 12 p.m., water year October 1955 to September 1956

263

Day

1 

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21 

22

23

24

25

26

27

28

29

50 

51

ft)

(*)

Oct.

51.500 

51, §66

51,500

51,500

51,500

51,500

51,500

51,500

51,100

51,100

51,100

51,100

51,100

51,100

51,100

51,100 

51,100

51,000

51,000

51,000

51,000 

50,900

50,900

50,900

50,900

50.700

50,766

50,700

50,700

50,700 

50,700

7,597.8

-600

Nov.

50.600

50,500

50,500

50,300

50,300

50,500

50,300

50,300

50,500

50,500

50,200

50,200

50,200

50,200

50,200 

50,200

50,200

50,200

50,200

50,500 

50,300

50,300

50,500

50,300

50,300

50,200

50,000

49,900

49.800

7,597.1

-900

Dec.

49.600 

49.S66

49,200

49,100

49,000

49,000

48,800

48,600

48,500

47,900

47,500

47,200

46,800

46,400

46,200

45,800 

45,400

45,100

44,800

44,600

44.500 

44,600

46,200

47,200

47,900

48,600

48,800

49,100

49,400

49,500 

49,600

7,597.0

-200

Jan.

49,900 

50,000

50,100

50.500

$6,266

50,000

49,900

49,800

49,600

49,500

49,400

49,200

49,100

49,000

48,800

48,800 

48,800

48,700

48,600

48,600

! 48, 500 

48,500

48,100

48.000

48,000

48,000

48,500

48,400

48,600

48,700 

48,700

7,596.5

-900

Feb.

tW

48,500

48,000

47,700

47,500

47,200

46,900

46,700

46,500

45,800

45,400

45,000

44,400

44,000

43,500 

45,100

42,600

42,200

41,900

41,500 

41,000

40,500

40,000

59,400

38,800

38,200

57,700

57.000

----- 

7,587.2

-11,700

Mar.

56.200

34,800

54,100

53,500

52,500

51,800

51,100

50,400

29,900

29,100

28,500

27,700

27,100

26,400

25,800 

25,200

24,700

24,200

23,600

25.100 

25,160

25,500

25,600

24,100

24,400

24,700

25,000

25,500

25,900 

26,300

7,578.0

-10,700

Apr.

26.500 

26,900

27,200

27,400

27,700

28,100

28,400

28,900

29,400

29,900

50,500

50,700

51,100

31,500

51,700

52.000 

51,800

51,500

51,100

50,800

50,500 

50,400

50,500

50,500

50,500

50,900

51,200

51,500

51,600

51,800

7,582.9

+5,500

May

52.000 

32,400

55,000

55,900

54,800

55,500

56,100

36,600

37,300

37,800

58,300

38,700

59,100

59,600

40,100

40,700 

41,700

42,700

45,500

44,300

45,600 

47,100

48,900

50,800

52,400

54,000

55,800

57,500

59,400

61,200 

63.100

7,606.4

+51,500

June

64.800

68,600

70,400

72,100

73,800

75,600

77,400

79,500

81,600

83,900

86,100

88,500

90,500

91,900

93,500 

95,200

97,000

98,900

100,800

102,700 

104,600

106,600

108,800

110,800

112,900

115,100

117,400

119,100

119.900

7,639.74

+56,800

July

120,700 

121,700

125,100

125,900

125,900

125,900

124,000

124,100

124,200

124.600

124,500

123,500

122,100

120,600

119,300

118,200 

117.600

118,600

119,600

120,900

122,200 

123,400

123,500

125,000

122,600

125,200

125,900

124,000

125,900

125,700 

124,100

7,642.02

+4,200

Aug.

124,700 

124,700

124,800

125.100

125,000

124,800

124,400

124,000

123,800

123,800

125,700

123,200

122,700

122,200

121,700

121,100 

120,600

120,200

119,600

119,100

118,500 

117,800

117,200

116,500

115,900

115,200

114,500

115,800

115,000

112,500 

111,600

7,655.15

-12,500

Sept.

110.900 

116,266

109,400

108,700

107,800

107,000

106,200

105,400

104.700

104,866

104,800

104,900

104,900

105,000

105,000

105,100 

105,200

105,200

105,500

105,400

105,400 

105,500

105,600

105,600

105,600

105,700

105,800

105,900

106,000

106,100

7,632.07

-5,500

Calendar year 1955.................... * +48,340

Water yeai* 1955-56 .....................* +54,800

t Elevation, In feet, at end of month. 

* Change in contents In acre-feet.
864 SAN JOAQUIN RIVER BASIN

Mono Creek below Lake Thomas A. Edison, Calif.

Location. Lat 37°21'40", long 118°59'25", in SW£ sec. 35, T. 6 S., R. 27 E. (unsurveyed), 

on left bank 0.6 mile upstream from diversion dam, 1 mile downstream from Lake Thomas 

A. Edison, and 1.9 miles northeast of Mono Hot Springs.

Drainage area. 98.0 sq ml.

Records available. November 1981 to September 1956. Prior to October 1954, published as 

"near Vermilion Valley."

Gage. Water-stage recorder. Altitude of gage is 7,400 ft (from topographic map).

Average discharge. 38 years (1988-30, 1932-56), 151 cfs (109,300 acre-ft per year), 

adjusted for storage.

Extremes. Maximum discharge during year, 1,240 cfs July 18 (gage height, 7.85 ft); minimum daily, 18 cfs Nov. 8.

1921-56: Maximum discharge, 1,760 cfs June 2, 1938 (gage height, 8.62 ft); minimum 

daily, 0.3 cfs Nov. 11, 12, 1954.

Remarks. Records good. Plow regulated by Lake Thomas A. Edison beginning Oct. 12, 1954 

[see preceding page). No diversion.

Cooperation.--Water-stage-recorder graph and 13 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 1011: 1943.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, In cubic feet per second)

4.8

4.9 

5.1 

5.5 

5.9

9.8

18

41

113

229

6.2 

6.5 

7.0 

8.0

349

495

745

1,340

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

14

14

14

14

14

14

14

14 

14

14

14

14

14

if

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14 

14

436

14.1

855

NOV.

14

20

 119

17

14

13

13

if

15

15

15

15

15 

15

15

15

15

15

15

15

15

15

15

47

109

109

109

109

109

1,054

35.1

2,090

Dec.

109

109

109

109

114

109

173

219 

219

219

219

219

219

*219 

215

215

215

215

215

215

215

95

38

42

38

34

32

29

27

25 

24

4,254

137

8,440

Jan.

22

21

29

156

153

153

153

153 

153

 153

153

153

153

153 

135

99

150

150

150

150

150

150

150

150

104

34

27

24

23

24

104

3,532

114

7,010

Feb.

195

195

195

195

195

195

195

195 

195

228

294

294

294

294 

294

290

290

290

290

290

290

286

286

319

349

349

349

349

381

7,861

271

15,590

Mar.

440

*435

435

435

435

430

430

430 

425

420

420

420

420

415 

410

410

410

410

405

405

359

61

37

31

31

29

29

31

31

9,136

295

18,120

Apr.

29

28

27

26

26

27 

29

31

31

29

28

27 

26

89

367

386

386

386

386

390

*390

377

246

156

189

189

189

189

4,731

158

9,380

May

192

121 iff

61

44

40

37

36 

34

34

34

34

33

33

32

31

28

32

32

32

33

36

36

34

31

29

28

27

26

26

25

1,484

47.9

2,940

June

24

23

23

23

23

22

21

20

IS

19

19

19

19

19 

19

19

19

19

19

19

19

19

19

19

19

19

19

 54

343

570

1,507

50.2

2,990

July

430

 235

68

281

635

 610

620

600

585

455

604

989

1,180

1 . 200 

1,150

1,070

612

28

22

22

21

21

553

1,000

745

377

*475

610

605

495

154

16,452

531

32,630

Aug.

12

282

180

111

240

*298

400

420 

340

168

222

410 '425

430

410

410

430

415

430

430

440

 445

450

455

455

455

455

465

4J5

460

465

11,541

372

22,890

Sept.

480

4g5

485

480

*480

480

480

460 

425

27

25

*24

20

12

19

19

19

19

19

19

19

19

19

19

19

24

29

29

24

21

4,726

158

9,370

Calendar year 1955 : Max 340 Mln 4 Mean 54.6 Ac-ft 39,500

Water year 1955-56 : Max 1,200 Mln 12 Mean 182 Ao-ft 132,300

* Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 265

Jackass Creek near Jackass Meadow, Calif.

Location. Lat 37 Q 29'10", long 119°18'20", in NE^ sec. 23, T. 55., R. 24 E., on left 

bank 1.6 miles east of Jackass Meadow, 10 miles upstream from West Pork, and 18 miles 

northeast of town of Bass Lake.

Drainage area. 12.8 sq mi.

Records available.--December 1921 to July 1928, November 1951 to September 1956 (no 

winter records).

>

. Water-stage recorder. Altitude of gage Is 6,900 ft (from topographic map). Prior 

o May 5, 1922, staff gage at same site and datum.

Average discharge.--5 years (1922-27), 19.1 cfs (13,830 acre-ft per year).

Extremes.-»Maxlmum discharge recorded during year, 786 cfs Dec. 23 (gage height, 

11.37 ft); no flow at times during several months.

1921-28, 1951-56: Maximum discharge recorded, that of Dec. 23, 1955; no flow at 

times.

Remarks . Records fair. No storage or diversion.

Cooperation. Water-stage-recorder graph and three discharge measurements furnished by 

Southern California Edison Co in connection with a Federal Power Commission project.

Rating table, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

4.95

5.0

5.1

5.2

5.3 

5.5 

5.7

.6

1.6

2.8

6.2

11

6.0

6.5

7.0

8.0

9.0

10.0

11.0

22

50

81

170

300

470

688

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23 

24

25

26

27

2S

29

30

31

Total

Mean

Ac-ft

Oct.

2.

0

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0It

0

.1.1

0

.1

*0

0

0

0

0 

0

0.5

0.02

1.0

Nov.

a0

a

!i

0

0

0

0

.1

0

.1

0

0

0

0

0

.1

.1

.1

.1

0

0 

0

0

.1.1

0

.1.1

1.3

0.04

2.6

Dec.

0

0

0 

0

0

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.3

.6

132

HI

116

80

64

50

40

35

30

1,267.7

40.9

2,510

Jan.

.

-

-

Feb.

_

-

-

Mar.

-

-

.

-

.

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

78

77

73

71

81

89

88

62

_

-

-

Apr.

58

49

f

69

87

101

114

98

71

58

52

48

47

48

52

61

76

90 

101

120

134

148 

147

116

93

80

89

99

105

2,509

83.6

4,980

May

112

124

228 

215

126

109

94

83

82

74

*78

68

M

81

109

139

116

157

127 

191

241

271

261 

202

202

194

174

167

161

162

146

4,562

147

9,050

June

142

143

lil 

133

}14

110

117

115

113

114

*101

95

8S

84

73

69

67

67

59 

57

53

51

49 

44

41

42

41

38

32

26

2,425

80.8

4,810

July

22

20

19

17

15

14

13

12

9.8

8.5

7.5

6.6

6.0

5.4

4.8

4.5

*4.5

4.3

4.7 

18

19

13

9.8 

7.8

12

8.0

5.0

4.0

3.2

2.8

2^4

303.6

9.79

602

Aug.

1*1

1.8

1.6 

1.4

1.3

1.1

.9

.6

.5

.4

.3

.3

.2

.2

.2

.2

.1

.1

.1 

.1

.1

.1

.1 

.1

.1

.1

.1

.1

**.!

.1

.1

14.4

0.46

29

Sept.

*t

.1 

.1

0

0

0

0

0

0

0

0

0

*0

.1

.1

.1.1.1 .1

.1.1.1 

.1

.1

.1.1.1

.1.1

2.0

0.07

4.0

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac -ft

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. Stage-discharge relation affected by Ice Nov. 13-17, 22-25, Dec. 1-5, 9-18, 27, 28.
266 SAN JOAQUIN RIVER BASIN

Chiquito Creek near Arnold Meadow, Calif.

Location. Lat 37°24'45", long 119°22'50", in NE$ sec. 18, T. 6 S., R. 24 E., on right 

banK 0.5 mile downstream from Beasore Creek, 0.6 mile southwest of Arnold Meadow, and 

12 miles northeast of town of Bass Lake.

Drainage area. 59.6 sq mi.

Records available. September 1921 to June 1928, November 1951 to September 1956 (no 

winter records except 1955).

Qage . Water-stage recorder. Altitude of gage is 4,800 ft (from topographic map). Prior 

£b Apr. 30, 1922, staff gage at same site and datum.

Average discharge.--? years (1921-27, 1954-55), 83.4 cfs (60,380 acre-ft per year).

Extremes. Maximum discharge during year, 8,630 cfs Dec. 23 (gage height, 16.38 ft); minimum, 4.0 cfs Oct. 13.

1921-28, 1951-56: Maximum discharge, that of Dec. 23, 1955; minimum. 1.4 cfs 

Aug. 27-31, 1924.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

No storage or diversion.

Cooperation. Water-stage-recorder-graph and eight discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Hating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 50

4.6

4.7

4.8

4.9

5.0 

5.3

5.6

6.6

11

18

25

58

4.7

4.8

4.9

5.0 

5.2 

5.5

7.0

12

18

26

48

91

6.0

6.5

7.0

8.0

10.0

13.0

185

325

510

940

2,080

4,680

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

4.6

4.6

4.5

4TJ

4.6

4.6

4.6

4.3

4.5

4.5

4.5

4.5

4.5

4.5

4.6

4.9

4.6

4.5

4.6

5.2

5.2

4.9

4.9

4.9

4.6

4.9

4.9

4.9

*4.9

4.6

4.6

145.2

4.62

284

Nov.

4.6

ITS

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.6

4.6

4.6

5.2

5.9

7.3

7.7

8.5

9.0

11

13

23

TT

11

9.5

11

10

11

12

12

15

250.4

8.55

497

Dec.

13

15

13

13

li

31

23

18

30

25

23

22

20

19

20

19

17

16

24

43

41

610

*4.460

1,980

651

437

250

159

113

103

103

9,305

300

18,450

Jan.

101

98

94

88

86

85

83

81

80

78

83

85

83

89

113

159

TUT

96

95

95

89

95

115

105

101

115

106

108

105

101

96

2,979

96.1

5,910

Feb.

91

8?

89

91

91

88

86

85

85

83

81

83

85

85

81

80

80

78

75

Tf

77

80

85

85

82

80

80

80

80

- - _ _ . _

2,408

85.0

4,780

Mar.

_

-

-

Apr.

.

-

-

May

400

500

800

*900

409

370

350

520

520

500

300

2~7o" 270

300

400

550

500

600

550

700

900

1,000

900

800

750

700

650

650

600

600

550

17 , 209

555

54,150

June

550 *55o"

500

480

450

450

450

420

420

400

400

570

550

320

300

300

280

280

250

220

220

200

190

180

160

160

*160

159

120

100

9,339

311

18,520

July

80

TC

60

55

50

48

45

40

35

30

28

25

20

18

17

16

15

TF

15

65

60

40

35

30

40

 45

45

40

38

35

33

1,188

38.5

2,560

Aug.

31

37

29

28

26

25

24

*24

23

23

22

*21

20

19

19

19

19

18

18

18

17

17

17

16

16

16

15

15

15

14

T?

628

20.3

1,250

Sept.

13

13

13

12

12

12

12

11

11

11

11

10

10

10

10

10

*9.0

9.0

9.0

11

12

10

10

9.5

9.0

8.6

975

14

T5

9.5

321.1

10.7

637

Calendar year 1955: Max 4,460 Mln 4.3 Mean 78.1 Ao-ft 56,510

Water year 1955-56: Max - Mln - Mean - Ao-ft -

* Discharge measurement made on this day.

Mote.--No gage-height record Feb. 21-29, May 1-4, May 6 to June 27, June 29 to Aug. 8, Aug. 18 to 

Sept. 17; discharge estimated on basis of 6 discharge measurements, weather records, and records for 

San Joaquin River above Big Creek and Bear Creek near Lake Thomas A. Edison.
SAN JOAQUIN RIVER BASIN 267

San Joaquin River above Big Creek, Calif.

Location. Lat 37°15'00", long 119°19'10", in NWtr seo. 11, T. 8 S., R. 24 E., on left bank 

3 miles upstream from Big Creek.

Drainage area.--1.042 sq mi.

Records available. March 1922 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,500 ft (from topographic map).

Average discharge. 31 years (1925-56, period since diversion began through Ward tunnel), 

1,339 cfs (9b9,400 acre-ft per year).

Extremes. Maximum discharge during year, 63,000 cfs Dec. 23 (gage height, 24.75 ft), from 

rating curve extended above 14,000 cfs on basis of computation of peak flow over dam; 

minimum daily, 62 cfs Oct. 8-10, 14, 15.

1922-56: Maximum discharge, that of Dec. 23,, 1955; minimum daily, 52 cfs Sept. 24, 

1931.

Remarks. Records good. Plow partly regulated by Florence Lake (see p. 258 ) and diversioris through Ward tunnel (see p. 259) beginning in 1925.

Cooperation. Water-stage-recorder-graph and 23 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions.--WSP 766: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

6.2 

6.5 

7.0 

7.5 

8.0 

9.0 

10.0

Oct. 1 to Dec. 23

57

92

184

303

473

955

1,570

11.0

12.0

14.0

16.0

18.0

20.0

23.0

Dec. 24 to Sept. 30

2,400

3,520

6,910

11,900

19,300

28, 900

48,600

6.7 

7.0 

7.5 

8.0

246

319

470

685

9.0

11.0

13.0

16.0

1,200

2,650

5,140

11,900

Note. Same as preceding 

table above 16.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23 

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

66 

64

63

63

63

63

63

62(>2~

62

63

63

*63

62

62

63 

64

64

67

68

71

7T

70 

67

65

65 

66

66

66

66

66

2,009

64.8

3,980

Nov.

65 

65

65

66

66

66

66

64

64

63

63

63

68

104

*98

95

147

147

145

176

275" 354

176 

161

141

141 

147

159

159

151

3,620

121

7,180

Dec.

272 

300

223

194

180

513

544

368

700

543

413

375

365

343

*327

315 

283

270

462

922

916

9,930

45,500 

26,400

9,580

7,370 

5,790

3,680

2,920

2,370

2,170

122,338

3,946

242,700

Jan.

1,970 

1,820

1,700

1,590

1,550

1,500

1,430

1,410

1,340

1.500

1,390

1,590

1,550

1,530

2,180

3,960 

*2,390

1,920

1,720

1,660

1,590

1,630

3,140 

2,070

3,400

4.150 

375"90

2,350

1,990

1,820

1,710

62,920

2,030

124,800

Feb.

1.570 

1,500

1,470

1,480

1,470

1,400

1,340

1,320

1,250

1,260

1,240

1,270

1,280

1,280

1,240

1,170 

1,130

1,110

*1,080

1,080

*1.050

1,060

1,430 

1,210

*1, 130

1,130 

1,070

*1,070

1,060

_

36,130

1,246

71,660

Mar.

1.050 

1,050.

1,110

1,140

1,150

1,080

1,030

*1,050

1,110

1,120

*1,260

1,250

1,230

1,240

1,230

1,290 

*1,430

1,540

1,650

1,670

*1,780

1,880

2,040 

2,350

2,560

2,520 

*2,360

2,290

2,500

2.700

2,6 60

50,300

1,623

99,770

Apr.

2,210 

1,870

1,700

1.610

1,760

2,000

2,390

2,680

3,060

*3,290

2,660

2,360

2,110

1,920

1,840

1.97O 

1,990

2,160

2,290

2,690

*3,090

3,220

3,880 

4,200

*4,410

4.620 

3,780

3,260

3,160

3,290

81,470

2,716

161,600

May

3,510 

3,770

4,300

7,910

5,220

4,240

3,890

3,370

3,720

3,330

3,370

3,070

*2,670

2.550

2,900

3,620 

4,100

4,110

4,820

4,470

6,240

7,730

8.210 

8,090

*6,670

7,120 

7,160

6,300

6,540

6,690

6,620

156,290

5,042

310,000

June

6,100 

6,170

6,260

6,710

6,010

5,170

5,560

5,880

6,120

6,440

6,350

6,030

6,030

5,520

4,650

4,180 

4,340

4,840

5,330

4,950

*4,650

4,780

5,090 

5,280

5,200

5,040 

5,720

6,080

6,210

5,990

166,680

5,556

330,600

July

4,920 

3,910

3,050

2,880

3,290

3,290

3,320

3,360

3,330

3,110

2,660

2,710

3,440

3,090

2,890

2,850 

2,710

1,980

2,290

*2,910

4,220

3,510

3,920 

4,870

6,120

4,120 

4,000

4,160

3,390

2,250

1. 610.

104,160

3,360

206,600

Aug.

1.550

1,166

1,030

927

861

805

778

777

780

765

765

721

667

*649

636

608 

586

572

550

529

497

474

459 

452

456

434 

418

404

398

386

5X6

20,292

655

40,250

Sept.

384 

378

369

358

348

*329

322

306

283

271

281

358

340

309

283

274 

262

253

251

25T

309

293

276 

267

253

*258 

260

386

381

324

9,247

308

18,340

Calendar year 1955: Max 43,300 Mln 62 Mean 1,186 Ac-ft 858,400

Water year 1955-56: Max 43,300 Mln 62 Mean -2,228 Ac-ft 1,617,000
268 SAN JOAQUIN RIVER BASIN

Ward tunnel at outlet, Calif.

Location.--Lat 37°15'15", long 119 0 09'35 M , In SW^ sec. 5, T. 8 S., R. 26 E., on right bank 

Just upstream from tunnel outlet at east end of Huntlngton Lake, 6 miles northeast of 

Big Creek.

Records available. November 1927 to September 1956.

Gage. Water-stage recorder until May 23, 1956. Datum of gage was 6,999.00 ft above mean 

sea level (levels by Southern California Edison Co.).

Average discharge . 28 years (1928-56), 454 cfs (328,700 acre-ft per year).

Extremes.--1927-56: Maximum dally discharge, 2,080 cfs June 21, 1935; minimum dally, 

0.4 cfs Dec. 7, 1945.

Remarks. Records fair. Tunnel diverts from Florence Lake to Huntington Lake, receives 

diversions from Bear and Mono Creeks and at times from several other small tributaries 

of South Pork San Joaquln River. See record for Ward tunnel at Intake, page 259.

Cooperation. Water-stage-recorder graph and 78 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

310

213

356

429

464

480

485

482

480 

480

477

475

420

254

172

424

368

22

20

62

148

235 

335

402

475

655

848

896

1.050

805

600

13,300

429

26,380

Nov.

224

20

125

325

498

500

790

900

575 

20

19

19

19

23

580

1,380

995

23

22

1,010

1.590

1,100 

995

860

743

568

255

184

161

165

14,688

490

29,130

Dec.

170

165

175

175

180

195

294

328

338 

333

328

318

310

303

297

290

285

280

278

320

335

675

410

235

215

190

130

122

118

90

BS.

7,968

257

15,800

Jan.

80

15

75

200

190

940

925

905

920 

930

935

930

930

925

650

435

930

928

935

905

710

390 

340

335

210

250

260

285

285

270

330

17,408

562

34,530

Feb.

416

397

386

378

379

368

359

356

381

444

448

450

450

444

435

426

424

420

414

411

407 

411

444

473

477

469

469

501

-

12,186

420

24,170

Mar.

559

556

563

573

577

567

558

565

579 

587

601

597

593

593

586

606

642

660

672

675

644

If! 439

470

442

405

412

470

496

473

16,896

545

33,510

Apr.

393

306

274

260

283

357

451

510

576 

608

534

451

387

349

327

394

693

731

755

826

919

982 

1,100

1.200

1,100

963

897

808

747

782

18,963

632

37,610

May

931

1,120

1,200

1,240

1,080

911

779

662

638 

580

532

498

458

454

536

705

854

1,040

1,150

1,170

1,410

1,690 

1.820

1,800

1,800

1,760

1,740

1,450

1,250

1,260

1 , 280

33,798

1,090

67,040

June

1,300

1,300

1,080

2

545

1,230

1,450

1,440

1,450 

1,460

1,460

1,580

1,290

522

1,380

1,940

1,920

1,910

1,880

1,920

1.950

1,920 

1,900

1,910

1,910

1,900

1,880

1,890

1,900

1,920

46,139

1,538

91,520

July

1,870

1,890

1.970

1,810

1,690

1,630

1,620

1,700

1,700 

1,720

1,410

1,100

1,090

1,230

1,240

1,170

1,120

1,290

1,240

968

1,040

1,200 

810

678

797

1,120

1,150

970

1,010

1,390

1 ' 330

40,953

1,321

81,230

Aug.

1.260

1,180

953

871

1,090

1,180

1,210

1,160

1,080 

908

964

1,140

1,140

1,150

1,120

1,120

1,130

1,120

1,120

1,110

1,120

1,110 

1,110

1,170

1,210

1,200

1,200

1,200

1,210

1,180

1,180

34,896

1,126

69,220

Sept.

1.200

1,200

1,200

1,190

1,120

1,090

1,140

1,170

1,000 

73

69

67

61

57

55

53

51

52

52

59

58

56 

54

52

52

54

73

84

74

59

11,573

386

22,950

Calendar year 1955: Max 1,790 Mln 3.5 Mean 402 Ao-ft 290,900

Water year 1955-56 : Max 1,970 Mln 2 Mean 734 Ao-ft 533,090

Note. Record computed as the sum of Ward tunnel at Intake plus Inflow to tunnel.
SAN JOAQUIN RIVER BASIN 269

Huntlngton Lake near Big Creek, Calif.

Location. Lat 37°14', long 119°13', In SW£ sec. 14, T. 8 S., R. 25 E., In gate tower of 

dam l on Bin; Creek and 2 miles northeast of town of Big Creek.

Drainage area. 79.0 sq ml.

Records available. 1913 to 1926 (summary of yearly contents In WSP 881), October 1926 to 

September 1956.

Gage. Water-stage recorder. 

Tornla Edison Co.).

Datum of gage is at mean sea level (levels by Southern CallExtremes,. Maximum contents during year, 89,500 acre-ft July 22 (elevation, 6,950.23 ft); 

minimum, 3,320 acre-ft Oct. 1 (elevation, 6,844.96 ft).

1913-56: Maximum contents, 90,300 acre-ft May 23, 1926 (elevation, 6,950.8 ft); minimum, 2,180 acre-ft Mar. 8, 1935 (elevation, 6,839.0 ft).

Remarks. Lake is formed by four dams; storage began Apr. 11, 1913. Dams were raised In 

1914 and again In 1917. Usable capacity, 89,200 acre-ft between elevations 6,819.9 ft 

(invert of outlet tunnel No. 1) and 6,950 ft (spillway crest at dam 1) above mean sea 

level. Additional storage of 600 acre-ft Is not available for release. Water Is used 

for power development In Big Creek plants. Records, including extremes, show usable 

contents at 12 p.m.

Cooperation. Records of contents furnished by Southern California Edison Co. In connection 

with a Federal Power Commission project.

Revisions. Figures of contents prior to Oct. 1, 1946, are for usable contents above centerllne of outlet tunnel and those after that date are for usable contents above Invert 

of outlet tunnel.

Capacity table, water year 1955-56 (elevation, in feet, 

and contents, in acre-feet)

6,844

6,846

6,850

6,855

6,860

6,865

6,870

6,880

3,120 

3,540 

4,480 

5/850 

7,430 

9,230 

11,3OO 

16,400

6,890

6,900

6,910

6,920

6,930

6,940

6.950

6.951

22,900

30,900

40,200

50,800

62,600

75,300

89,200

90,600

Contents, in acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

a

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

(t)

(*)

Oct.

5.520 

5,450

5,840

4,580

5.1OO

5,770

6,450

7,220

8,120

8,670

9,540

9,900

10,500

10,500

10,700

11,400

11,800

11,400

11,100

10,600

10,500

10, 5OO

11,000

11,500

11,600

12,500

15,500 

14,900

16,500

18,000

li.700

6,883.91

+15,390

Nov.

18,900 

18,500

18,500

18.2OO

19,100

20,100

21,100

22,600

25,7OO

25,400

25,200

25,100

25,100

22,900

25,600

25, 900

27,900

27,800

27,700

29,100

52,100

54, 100

35,900

37,700

59,100

40,000

40.400 

46,466

40,500

40,000

6,909.82

+21,300

Dec.

40.000 

40,000

40,000

40,100

40,000

40,000

40,300

40, 700

41,000

41,4OO

41,800

42,200

42,500

42,600

42,500

42, 500

42.70O

43,000

43,000

43,100

45,500

46,000

52,400

55,300

56,600

57,700

57.900 

37,666

57,500

56,600

56,000

6,924.55

+16,000

Jan.

55,500 

54, 6OO

55,800

53,500

52,800

55,600

54,400

55,500

56,500

57,200

58,100

59,000

59,900

60,800

61,600

61,500

62,500

63,400

64,500

65, 10O

65,600

65.7OO

65,500

65,200

65,000

65, 500

61,200 

58,800

56,600

54, 500

52,600

6,921.62

-5,400

Feb.

53.100 

51,600

51,000

50, 400

49,900

49,500

48,700

48,000

47 , 500

46,700

46,500

45,900

45,500

45, 100

44, 600

44,200

45,700

45,200

42,700

43,100

41,700

41,200

40,800

40,400

4O.OOO

59,700

59,500 

58,900

58.500

_______

6,908.29

-14,100

Mar.

38.500 

38, 160

37,900

37,700

57,500

57,400

57,200

57,000

56,800

56,700

56,700

56,600

56,500

56,500

56,400

56,400

56,40O

56,600

56,400

55, 800

55,500

54,500

33,500

32,500

52,100

51,400

30,800 

3O, 100

29,600

29,200

28.800

6,997. 65

-9,700

Apr.

28,200 

27,500

26,600

26,200

25,800

25,800

26,000

26,400

27,000

27,400

27,200

36,800

26,100

25,400

24, 800

24.400

24,700

24,900

25,000

25,500

25,800

26,300

27,100

28,100

28,900

29.200

29,100 

28,700

28,400

28, 100

6,896.77

-700

May

28,100 

28,600

39,400

50,900

51,200

51,100

50,600

29,900

29,200

28,400

27,700

26,900

26,200

25,600

35.400

25,900

26,500

27,500

28,800

29,900

52,000

55,100

58,600

41,700

44,400

47,400

50,400 

52,600

54, 400

56,200

57 . 900

6,926.16

+29,800

June

59.400 

60, 900

62,500

61,200

6O, 700

61,500

65,000

64,500

66,000

67,500

68,900

70,400

71,500

70,200

70,300

71,600

72,900

74,200

75,300

76,400

77,400

78,500

79,400

80, 100

80,900

81,500

82,100 

82,700

85, 100

85.400

6,945.90

+25, 500

July

85.700 

83,960

84, 100

84,200

84,10O

83,900

84,600

86,000

87,200

88,500

89, 10O

89, 100

89,000

89,200

89,300

89,300

89,200

89,500

89,400

89,200

88,900

89.500

89,200

88,800

88,400

88,500

88,800 

88, 600

88,300

88,700

89,000

6,949.89

+5, 600

Aug.

89,000 

S9.10O

88, 866

88,300

88.200

88,400

88,600

88,700

88,700

88,500

88,500

88,400

88,500

88,500

88, 500

88,5OO

88,5OO

88,500

88,500

88,400

88,400

88,500

88,200

88,20O

88,300

88,400

88,500 

88,600

88,600

88,700

88,800

6,949.71

-200

Sept.

88,800 

88,900

88,900

89,000

89.100

88,900

88,900

88,900

88,900

87 , 40O

86,200

85,000

83,800

82,600

81,400

80,600

79,400

78,200

77,100

75,900

74,700

73,600

72,600

71,400

70,500

69, 100

68,000 

66,800

65,700

64.700

6,931.70

-24, 100

Calendar year 1955................... t -5,200

Water year 1955-56................... t +61,390

t Elevation, in feet, at end of month. 

* Change in contents in acre-feet.
270 SAN JOAQUIN RIVER BASIN

Big Creek below Huntlngton Lake, Calif.

Location. Lat 37°13'10", long 119°12'50", In NW£ sec. 23, T. 8 S., R. 25 E., on right 

bank 1,200 ft (revised) upstream from Grouse Creek and 1 mile downstream from Huntington Lake.

Drainage area. 80.0 sq ml.

Records available. June 1925 to September 1956 (records prior to October 1929 for periods 

of spill only from Huntlngton Lake).

Gage. Water-stage recorder, Parshall flume and concrete control. Altitude of gage Is 

£,600 ft (from topographic map). Prior to Oct. 1, 1942, at datum 1.00 ft lower and 

Oct. 1, 1942, to Sept. 30, 1948, at datum 1.00 ft higher than present datum.

Extremes.--Maximum discharge during year, 151 cfs July 23 (gage height, 4.00 ft); minimum 

dally, 0.2 cfs Oct. 1-17, Nov. 1-8.

1925-56: Maximum discharge, 2,040 cfs June 23, 1925 (gage height, 11.3 ft, present 

datum), siphon spillways operating at Huntlngton Lake; minimum dally recorded, 0.1 cfs 

Jan. 18-21, Aug. 21 to Sept. 24, Oct. 7-18, Dec. 5-16, 1931.

Remarks. Records excellent. Plow regulated by Huntlngton Lake beginning In 1913 (see 

preceding page). During most of year flow Is diverted for power development at Big 

Creek powerhouse No. 1.

Cooperation. Water-stage-recorder graph and two discharge measurements furnished by 

Southern California Edison Co. In connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

1.2

1.3 

1.5 

2.0 

2.2

0.2 

.4 

1.0 

2.8 

3.6

2.4 

2.6 

2.8 

3.0 

3.5

4.6

5.6

15

30

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.2 -7?

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

73

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

7.6

0.25

15

Nov.

~72~ 0.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.4

.3

.3

.4

.4

.4

.5

75" .8

.5

.5

.5

.5

.5

.5

.5

.5

11.1

0.37

22

Dec.

~T6 0.5

.5

.5

.5

1.3

.8

.8

1.9

.9

.8

.7

.7

.7

.7

.7

.6

.6

.7

.9

1.0

14

36

27

12

14

8.2

5.4

4.7

4.2

3 9'

145.8

4.70

289

Jan.

3.7

3.4

3.3

3.1

3.0

2.8

2.8

2.6

2.6

2.5

2.6

2.6

2.6

2.7

4.9

4.3

3.4

3.1

3.0

2.9

2.8

3.6

4.2

3.4

3.8

3.7

3.5

3.2

3.0

2.9

'

98.8

3.19

196

Feb.

2.7

276

2.6

2.6

2.5

2.4

2.4

2.4

2.4

2.3

2.3

2.3

2.3

2.2

2.2

2.2

2.2

2.1

1.9

1.9

1.9

1.8

1.9

1.8

1.8

1.7

T7T

1.7

1.7

62.5

- 2.16

124

Mar.

1.7

1.7

1.8

1.8

1.7

1.7

1.6

T76

1.7

1.7

1.8

1.8

1.8

1.8

1.8

1.9

2.1

2.1

2.1

2.2

2.2

2.4

2.5

2.7

2.8

2.6

2.6

2.6

2.7

£ . 8

2.7

65.0

2.10

129

Apr.

2.5

2.4

274

2.4

2.5

2.6

2.7

2.5

3.0

3.0

2.9

2.8

2.6

2.5

2.7

2.8

2.9

3.0

3.2

3.4

3.4

3.5

3.6

3.8

3.9

4.1

3.9

4.2

4.4

4.3

93.9

3.13

186

May

4.2

4.2

4.4

8.2

574

4.9

4.9

4.6

5.1

5.0

4.6

4.8

4.5

4.4

4.4

4.4

4.4

4.8

4.5

4.3

4.3

4.2

4.0

3.7

3.4

3.4

3.3

3.2

3.0

3.0

2 8

 s 

134.3

4.33

266

June

2.8

277

2.6

2.5

2.4

2.4

2.3

2.2

2.2

2.1

2.1

2.0

1.9

1.9

2.0

1.9

1.8

1.8

1.8

1.8

1.7

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.4

58.7

1.96

116

July

1.4

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.9

4.2

2.0

4.1

23

*48

18

24

62

33

3.0

*78

T6

7.3

1.4

1.3

1.2

1.2

1.2

T72- 1.1

377.2

12.2

748

Aug.

1.8

2.5

T72- 2.6

1.1

1.1

1.1

1.1

1.1

1.0

 1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

35.6

1.15

71

Sept.

1.0

1.0

1.0

1.0

2.4

1.4

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9

.9

.8

75

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

' Q

28.5

0.95

57

Calendar year 1955: Max 36 Mln 0.2 Mean 1.06 Ac-ft 764

Water year 1955-56: Max 78 Mln 0.2 Mean 3.06 Ao-ft 2,220

* Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 271

Pitman Creek below Tamarack Creek, Calif. H

Location. Lat 37°11'55", long 119°12'45", in NW£ sec. 35, T. 8 S., R. 25 E., on right 

bank 0.8 mile downstream from confluence of Tamarack Creek and South Pork Tamarack 

Creek, 1.4 miles upstream from mouth, and 1.9 miles east of town of Big Creek.

Drainage area. 22.7 sq mi.

Records available. December 1927 to September 1956.

Gage. Water-stage recorder, Parshall flume and concrete control. Altitude of gage is 

7,100 ft (from topographic map). Prior to Sept. 29, 1940, at site 10 ft downstream 

on left bank at same datum.

Average discharge. 28 years (1928-56), 39.0 cfs (28,230 acre-ft per year).

Extremes. Maximum discharge during year, 3,670 cfs Dec. 23 (gage height, 11.20 ft), from 

rating curve extended above 350 cfs on basis of slope-area determination at gage height 

10.77 ft; no flow part of day Oct. 31.

1927-56: Maximum discharge, that of Dec. 23, 1955; no flow Oct. 15-18, 1931.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversion above station; practically all flow diverted below station to Huntington-Shaver conduit.

Cooperation. Water-stage-recorder graph and 18 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 931: 1940. WSP 1395: 1928-29, 1938, drainage area.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.9

2.0 

2.2 

2.4 

2.6 

2.8 

3.0 

3.2 

3.4

0.2 

.4

1.0

1.7

2.5

3.4

4.5

8.0

16

3.7 

4.0 

4.5 

5.0 

5.5 

6.0 

7.0 

8.0 

9.0

36

60

112

172

249

355

630

1,070

1,640

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.3 ~73

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

7?

.2

.2

.2

.2

.3

.3

.3

.3

.2

.2

.3

.3

.3

.3

.3

.3

8.5

0.27

17

Nov.

0.3 ~73

.3

.3

.3

.3

.3

.3

*.3

.3

.3

.3

.3

.4

.5

.4

.5

.6

.7

.8

~79 1.3

.8

.7

.7

.7

.8

.8

.8

.8

16.1

0.54

32

Dec.

~7S 0.7

.8

.7

.7

2.2

3.3

3.9

8.7

5.8

3.0

2.8

2.7

2.4

2.2

2.4

2.4

2.2

2.2

4.4

6.0

194

1.590

745

196

160

130

100

84

73

66

3,398.3

110

6,740

Jan.

63

57

52

49

48

46

44

42

40

43

47

a50

a47

a46

a72

a!25

177

a63

59

56

51

51

55

51

41

53

b40

b40

b40

45

44

1,637

52.8

3,250

Feb.

42

42

42

42

42

40

37

37

35

35

35

35

34

35

*35

35

34

b33

b32

30

30

30

32

34

32

29

30

31

29

1,009

34.8

2,000

Mar:

28

2?

31

31

36

32

39

28

30

31

30

35

35

32

*33

35

39

43

45

47

54

60

71

85

94

96

94

99

109

114

109

1,674

54.0

3,320

Apr.

86

76

68

66

73

94

114

132

*153

152

118

1QO

90

80

80

84

86

96

106

123

132

158

192

217

*231

202

154

137

147

164

3,711

124

i 7,360

May

185

217

277

479

304

247

213

184

175

158

150

134

128

141

*193

255

236

340

320

342

418

488 *4"50~

418

384

388

357

329

326

329

311

8,876

286

17,610

June

293

£55

*285

271

*236

217

220

218

217

213

195

182

171

156

136

129

126

126

120

110

99

99

93

86

76

70

67

62

54

*46_

4,658

155

9,240

July

40

37

34

31

28

26

24

22

21

19

17

17

16

14

14

14

12

12

12

11

*11

11

17

26

22

14

13

14

10

8.7

575.5

18.6

1,140

Aug.

7.2

675

6.6

6.4

6.0

5.7

5.4

4.6

4.3

4.0

3.6

3.4

3.1

2.9

*2.7

*2.7

2.7

2.5

2.4

2.2

2.0

1.9

1.7

1.6

1.6

1.5

1.4

1.4

1.4

*1.3

1.2

102.2

3.30

203

Sept.

1.2

1.1

1.0

.9

.9

.8

.8

.8

.8

.8

.8

.7

.7

.7

.7

.7

.6

.6

*.6

.8

.9

.8

.7

.6

.6

.5

79

1.1

.8

.7

23.6

0.79

47

Calendar year 1955: Max 1,590 Mln 0.2 Mean 35.2 Ac-ft 25,490

Water year 1955-56: Max 1,590 Min 0.2 Mean 70.2 Ac-ft 50,960

Pes 

287 c

ik discharge (base, 200 cfs). --De

fs (5.69 ft); May 4 (5 ajn.) 68(

0. 23 (3 a.m.) 3,670 cfs (11.20 ft); Apr. 24 (7:30 p.m.) 

> cfs (7.14 ft); May 22 (6 p.m.) 702 efs (7.18 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of records for HuntIngton-Shaver conduit at 

outlet and unpublished records for Pitman Creek near Tamarack Mountain, 

b Stage-discharge relation affected by Ice.
272 SAN JOAQUIN RIVER BASIN

guntlngton-Shaver conduit at outlet, Calif.

Location. Lat 37°10', long 119"14', in NWi sec. 15, T. 93., R. 25 E., on left bank at 

tunnel outlet, 4 miles south of town of Big Creek.

Records available.--October 1928 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 6,680 ft (from topographic map).

Average discharge. 27 years (1929-56), 215 cfs (155,700 acre-ft per year).

Extremes.--1928-56: Maximum daily discharge, 1,780 cfs June 3, 4, 1938; minimum daily, 

O~cfs Sept. 8-11, 1955.

Remarks.--Records good. Conduit diverts from Huntington Lake to Shaver Lake, with additions from Pitman Creek and seepage en route,

Cooperation. Water-stage-recorder graph and nine discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Revisions (water years).--WSP 931: 1940.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

25

26 

27

28

29 

50

51

Total

Mean

Ac- ft

Oct.

T7§ i!o

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1 1.1 1.1

1.1

1.1

1.2 I" .'"2"

1.2

1.1

1.1 

1.2

 1.0

1.0 

1.0 

1.0

32.5

1.05

64

Nov.

T76" 1.0 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1

T7T

1.1

1.1 1.1

*1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.0 

1.0

30.5

1.02

60

Dec.

Tt§ 1*6

1.6

1.6

2.3

3.5

*3.0

6.1

6.1

3.3

3.0

3.0

2.8

2.6

2.6

2.6

2.6

2.6

4.1

5.7

90

676

S5T

210

156 

129

98

86 

74

66

2,301.7

74.2

4,570

Jan.

65 

60

56

53

51

49

47

45

43

42

47

51

48

47

73

127

79

65

60

58

53

52

54

50

42

653 

1.040

1,020

999 

971

668

6,768

218

13,420

Feb.

170 

170

170

170

167

165

161

161

159

157

156

155

154

153

151

149

*147

b!42

b!42

b!41

141

140

139

139

137

135

132

132

151

4,564

150

8,660

Mar.

150 

150

150

129

129

128

12"9~ 127

127

129

130

129

129

130

130

132

137

142

350

545

517

*509

503

503

503

506 

501

504

516 

525 

519

8,846

285

17,550

Apr.

501 

480

328

136- 135

153

176

198

*222

428

570

544

503

447

380

338

341

433

509

552

617

691

799

923

1,030

1,040 

1,000

959

936 

923

16,290

543

32,310

May

936 

987

1,100

1,420

1,330

1,270

1,210

1,130

1,060

975

888

804

720

657 6~64

730

792

976

1,080

1,200

1,400

1,580

1,560

1,570

1,570

1,580 

1,580

1,580

1,580 

1.590 

1,560

57,099

1,197

73,580

June

1,570 

1.580

1,580

1,570

1,550

1,530

1,540

1,530

1,540

1,540

1,540

1,520

1,520

1,520

1,500

1,500

1,500

1,500

1,510

1,500

1,500

1,510

1,500

1,500

1,490

1,490 

1,490

1,490

1.480

TTtto"

45,580

1,519

90,410

July

1.480 

1,486

1,470

1,480

1,480

1,470

932

658

660

662

664

664

662

662

662

662

660

660

658

658

658

662

666

673

669

660 

*579

577

S55 

658 

658

25,502

823

50,580

Aug.

5§0" 658 

567

565

565

565

565

565

565

492

B"55" 477

555

559

576

576

*576

576

576

576

574

574

572

572

572

572 

574

574

574

576 

576

17,569

567

34,850

Sept.

576 

F7S

561

528

519

536

544

544

544

203

32

31

31

15

1.9

1.9

1.9

1.9

 1.9

1.9

1.9

1.9

1.7

1.7

1.7

1.7 

1.7

1.7

1.7 

1.7

5,266.8

176

10,450

Calendar year 1955: Max 1,520 Mln 0.9 Mean 203 Ac-ft 147,200

Water year 1955-56: Max 1,590 Mln 1.0 Mean 464 Ae-ft 356,500

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ioe.

Note. Discharge for Jan. 26 to Feb. 2, Apr. 24 to May 10, May 18 to July 7, computed on basis of 

unpublished records for Huntington-Shaver conduit at intake and Pitman Creek shaft.
SAN JOAQUIN RIVER BASIN 273

Shaver Lake near Big Creek, Calif.

Location. Lat 37 0 09', long 119°18', in SE£ sec. 13, T. 9 S., R. 24 E., near center of 

dam on Stevenson Creek and 6 miles southwest of town of Big Creek.

Drainage area. 29.7 sq mi.

Records available. January 1927 to September 1956.

. Water-stage recorder. Datum of gage is at mean sea level (levels by Southern Caliornia Edison Co.).

Extremes. Maximum contents during year, 135,500 acre-ft July 14-26; maximum elevation, 

5,370.09 ft July 18-20, 25, 26; minimum contents, 20,200 acre-ft Apr. 18, 19 (elevation, 

5,295.77 ft).

1927-56: Maximum contents, 135,700 acre-ft July 4, 5, 1946, Aug. 2, 3, 1952; maximum elevation, 5,370.2 ft July 4,5, 1946"; minimum contents, 652 acre-ft Mar. 7, 1942 

(elevation, 5,249.4 ft).

Remarks. Lake is formed by concrete-arch dam; completed and storage began in 1927. Usable 

capacity, 135,300 acre-ft between elevations 5,225 ft (trash-rack foundation) and 5,370 

ft (crest of spillway) above mean sea level. Water is received from Huntington Lake 

and Pitman Creek through Huntington-Shaver conduit and released for power development 

in Big Creek plants. Records, including extremes, show usable contents at 12 p.m.

Cooperation. Record of contents furnished by Southern California Edison Co. in connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, 

and contents, In acre-feet)

5,295

5,297

5,300

5,305

5,310

5,315

5,320

19,500

21,300

24,000

29,000

34,500

40,400

46,800

5,325

5,330

5,335

5,345

5,355

5,365

5,371

53,600

60,900

68,600

85,400

104,200

124,600

137,500

Contents, In acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

(t)

(*)

Oot.

98.500

98,400

97,700

96,900

96,100

95,400

94,800

94,200

93,800

93, 100

92,500

91,800

91,100

9O, 500

90,000

89,600

89,000

88,300

87,700

86,900

86,200

86,200

85,900

85, 200

84,400

83,700

83,000

82,300

81,900

81,800 

81,200

5,342.60

-17,300

Nov.

80.50O

79,800

79,100

78,50O

78,100

77,900

77,200

76,500

75,900

75,200

74,600

74,300

74,200

73,700

73,000

72,500

71,900

71,300

71,000

70,700

70,200

69,600

69,000

69,000

68,600

68,200

68,200

67,500

66,700

66,000

5,333. 35

-15,200

Dec.

65,500

65,3OO

65,100

64,800

64, 200

64,000

63,600

63,400

63, 200

63,000

62,900

62,400

61,800

61,100

60,400

59,700

59,100

58,800

58,300

57,900

57,500 sow

65,300

71,800

73,800

75,800

76,400

76,200

76,000

75,300 

74,600

5,338. 70

+8,600

Jan.

73.800

73,000

72,100

71,200

70,300

69,400

68,400

67,500

66,600

65,600

64,700

63,800

62,900

62,100

61,600

61,000

60, 200

59,300

58,400

57,500

56,60O

56,300

55,800

55,000

54.700

55,900

57,200

58,400

59,600

60, 500 

60,900

5,329.98

-13,700

Feb.

60. 500

59,700

59,000

58,300

57,700

57,000

56,300

55,600

54,900

54, 200

53,500

52,800

52,000

51,300

50, 600

49,800

49,100

48,300

47,500

46,700

46,000

45,300

44,700

44,000

43,200

42,400

41,600

40, 800

40,000

5,314.70

-20,900

Mar.

39,200

38,500

37,700

36,900

36,100

35,300

34,500

33,700

32,800

32,000

31,200

30,400

29, 600

28,800

28,100

27,400

27,000

26,300

25,900

25,900

25,900

25,900

25,800

25,800

25,800

25,700

25,700

25.600

25,600

25,600 

25,600

5,301.70

-14,400

Apr,

25,600

25, 500

25, 100

24,300

23,500

22, 800

22,400

21,800

21,200

21,000

21,200

21,300

21,300

21,200

20,900

20, 600

20, 300

20.200

20,200

20,300

20,600

21,200

21,700

22,600

23, 600

25,000

26,200

27,100

28,100

28, 900

5,304.95

+3^100

May

29.800

30,860

32,000

34, 200

35,900

37,400

38,900

40,200

41,500

42,500

43,400

44,100

44, 500

44,800

45, 100

45,500

46,000

46,900

48, 100

49,400

51,200

53, 200

55,300

57,300

59,300

61,200

63,200

65,100

67,000

68,900 

70.800

5,336.37

+41^900

June

72.700

74,600

76,400

78,300

80, 100

81,900

83,700

85, 600

87,400

89,300

91,100

92,900

94, 600

96,400

98,200

100, 400

102, 300

104,000

105,800

107,500

109,300

111,000

112,800

114,400

116,200

117,900

119,600

121,300

123,000

124^700

5,365.04

+53, 900

July

126,300

128,000

129,700

131,300

133,000

134,600

135,300

135,300

135,300

135,400

135,400

135,400

135,400

135,500

135,500

135,500

135,500

135,500

135, 500

135,500

135,500

135,500

135,500

135, 500

135,500

135,500

135,300

135,400

135,400

135,400 

135,400

5,370.04

+10,700

Aug.

135,400

135,300

135, 100

135, 200

135,200

135,200

135,200

135,200

135,200

135,100

135,100

135,000

135,000

135,000

135,000

135,000

135,000

135,000

135,000

135,000

135, 100

135,100

135,100

135, 100

135,100

135,100

135, 200

135,200

135,200

135,200 

135, 200

5,369.97

-200

Sept.

135.200

135,200

135,200

135,200

135,100

135,000

135,000

135,000

134,900

134,200

133,200

132,100

131,200

130, 200

129, 100

127,900

126,800

125,700

124,600

123,500

122,400

121,300

120, 100

119,000

118,000

116,800

115,800

114,800

113,900

112,700

5,359.27

-22,500

Calendar year 1955.................... t +38,800

Water year 1955-56.................... t +14,200

t Elevation, In feet, at end of month. 

t Change In contents In acre-feet.
274 SAN JOAQUIN RIVER BASIN

San Joaquin River above Willow Creek, near Auberry, Calif.

Location. Lat 37°08'40", long 119°27'00", in SW£ sec. 15, T. 9 S. , R. 23 E. , on right 

bank 1,000 ft downstream from diversion dam, 0.4 mile upstream from Willow Creek, and 

4.2 miles northeast of Auberry.

Drainage area. 1,299 sq mi.

Records available. March 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,180 ft (from topographic map).

Average discharge. 5 years, 589 cfs (426,400 acre-ft per year).

Extremes. Maximum discharge during year, 73,200 cfs Dec. 23 (gage height, 54.2 ft, from 

floodmarks), from rating curve extended above 7,000 cfs on basis of flood-routing 

study; minimum dally, 3 cfs Feb. 2 to Mar. 22.

1951-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 25, 1951.

Remarks. Records good except those for periods of no gage-height record, which are fair.

Flow regulated by 9 powerplants and 5 reservoirs with combined capacity of about

316,000 acre-ft. Conduit to powerhouse No. 4 diverts 1,000 ft above station.

Cooperation. Water-stage-recorder graph and 13 discharge measurements furnished by 

Southern California Edison Co. in connection with a Federal Power Commission project.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge. In cubic feet per second)

Oct. 1 to June 12 June 13 to Sept. 30

2.5 

3.0 

3.2 

3.4 

3.7 

4.0 

4.5 

5.0

3.0

7.5

9.8

14

21

31

49

6.0

7.0

8.0

10.0

14.0

20.0

32.0

44.0

232

460

820

1,880

4,550

10,100

26,300

48,900

3.7 

4.0 

4.6 

5.0

Note. Same as 

preceding table 

above 5.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

26

27

26

26 

26

26

26

26

26

ZS

25

25

25

25

26

25

26

25

25

25

25

25

25 

26

25

25

25

25

25

25 

25

788

25.4

1,560

Nov.

25

1

26

25

*25 

26

25

25

25

25

25

25

25

25

25

26

26

25

23

22

22

21

19

21 

22

23

24

24

24

24

24

724

24.1

1,440

Dec.

18

13

19

20 

20

16

10

13

(*)

13

8,600

47.700 

27,200

9,000

6,000

4,720

2,440

1,460

600 

500

108,518

3,501

215,200

Jan.

230

10

5

230

5

5

5

5

5

5

5

5

130

2,300

720

140

5

5

5

5

2,250 

620

4.100

4,000

2,300

1,100

400

230

5

18,840

608

37,370

Feb.

14

1

3 

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3 

3

3

3

3

3

3

98

3.4

194

Mar.

3

3

3

3 

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

3

15 

22

22

22

22

22

22

22

22

257

8.3

510

Apr.

22

20

8

8 

8

20

22

650

950

1,150

850

450

320

22

22

22

30

370

370

800

1,200

1,300

1,900 

2,200

2,600

2.900

2,000

1,500

1,300

1,400

24,414

814

48,420

May

1,600

*1,800

2,200

6.600 

3,700

2,400

2,100

1,700

2,100

1,600

1,600

1,400

1,000

800

1,000

1,700

2,300

2,000

3,000

2,400

*4,200

5,500

6,600 

6,500

4,700

5,000

5,400

4,400

4,700

4,800

4, 800

99,600

3,213

197,600

June

*4,100

4,200

4,200

4.800 

4,200

3,000

3,60O

3,800

4,100

4,500

4,400

4.00O

4,140

3,610

2,860

2.160

2,360

2,880

3,470

3,040

2,780

2,890

3,060 

3,410

3,320

3,100

3,740

4,160

4,250

3,980

108,110

3,604

214,400

July

3,020

1,950

1,130

1,040 

1,370

1,410

1,400

1,480

1,410

1,270

760

783

1,520

1,250

976

1,010

917

175

325

948

2,350

1,530

*2,050 

2,810

4.220

2,230

2,200

2,100

1,390

397

is.

45,444

1,466

90,140

Aug.

*23

23

22

*21 

21

21

*20

20

*20

20

20

20

*19

T9

19

19

33

20

19

20

20

20

20 

20

20

20

20

20

20

*20

20

639

20.8

1,270

Sept.

20

20

20

20 

20

20

20

20

20

20

20

*20

20

20

20

20

20

20

20

20

20

20

21 

20

20

20

21

IS20-

20

601

20.0

1,190

Calendar year 1955: Max 47,700. Mln 2.8 Mean 415 Ac-ft 300,200

Water year 1955-56: Max 47,700 Min 3 Mean 1,115 Ac-ft 809,300

* Discharge measurement made on this day.

Note.--No gage-height record Dec. 9 to June 12, Aug. 10-12; discharge estimated on basis of 5 discharge measurements and dally Inventory of computed flow at numerous published and unpublished stations In the upper San Joaquin River basin.
SAN JOAQUIN RIVER BASIN 275

Pacific Gas & Electric Co. conduit No. 3 near Bass Lake, Calif.

Location. Lat 37°17'25", long 119°31'45", in SE^ sec. 26, T. 7 S., R. 22 E., on left 

bank 1,000 ft downstream from Bass Lake and powerhouse and 2.5 miles southeast of 

town of Bass Lake.

Records available. October 1940 to September 1956. Prior to October 1954, published as 

"near Crane Valley Reservoir."

Gage. Water-stage recorder and concrete flume. Altitude of gage is 3,300 ft (from topographic map).

Average discharge. 16 years, 68.6 cfs (49,660 acre-ft per year).

Extremes. 1940-56: Maximum daily discharge, 166 cfs Aug. 28, 1956; no flow at times 

during each year except 1945-46, 1948, 1951-53, 1955-56.

Remarks. Records good. Conduit diverts from Bass Lake in sec. 26, T. 7 S. , R. 22 E. 

Water passes through Bass Lake powerhouse, then to powerhouse No. 3, and eventually 

returns to North Pork Willow Creek.

Cooperation. Water-stage-recorder graph and four discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Moan

Ac-ft

Oct.

0.5

.5

53

53

53

»»53

53

.5

.5

53

53

53

53

53

.7

.7

53

53

70

53

53

.7

.7

46

53

52

52

52

.5

.5 

52

1,124.8

36.3

2,230

Nov.

52

52

52

51

.3

50 .2

50

50

50

50

.3

.3

41

50

50

52

50

.2

.2

50

50

50

50

50

.3

.3

50

50

50

1,102.1

36.7

2,190

Dec.

50

50

.3

73

50

*78

 100

100

92

.3

.3

101

102

101

101

103

.4

.4

103

103

102

20

.8

.7

.5

.5

88

153

T53

152 

152

2,058.5

66.4

4,080

Jan.

152

152

152

156

158

158

159

T55

158

*158

*157

157

157

157

157

157

157

157

156

156

157

157

157

157

157

157

157

157

157

157 

157

4,857

157

9,630

Feb.

157

157

157

157

158

158

159

159

159

160

161

161

162

162

165

163

163

163

163

163

163

163

163

163

163

163

163

163

163

4,672

161

9,270

Mar.

163

163

163

163

163

163

163

163

163

163

163

163

163

163

163

163

165

165

162

161

161

*159

T59

159

159

159

159

159

159

159 

159

5,012

162

9,940

Apr.

159

159

159

159

159

159

159

159

*157

159

153

159

157

157

157

156

155

155

157

158

161

161

163

163

161

160

157

153

153

152

4,736

158

9,390

. Hay

151

150

150

151

152

153

154

154

153

153

153

153

153

155

157

157

*154

153

153

154

153

153

153

153

153

153

153

153

153

149 

*149

4,738

153

9,400

June

149

149

149

149

149

149

149

150

150

150

151

151

152

152

153

153

153

153

153

153

153

146

88

52

124

153

154

154

154

24

4,219

141

8,370

July

1.1

115

129

1.0

124

136

.8

75

124

*156

157

157

146

1.0

1.0

120

159

161

161

*142

1.2

1.2

125

157

157

157

144

.8

.8

122 

153

3,011.8

97.2

5,970

Aug.

153

155

136

1.0

773

124

157

157

158

159

160

161

161

161

161

161

161

160

161

162

163

165

164

161

161

162

. 164

166

165

164 

163

4,614.3

149

9,150

Sept.

161

160

157

157

156

*155

156

156

155

155

155

*155

155

156

156

156

156

157

157

157

157

157

157

157

158

157

158

138

.9

172

4,369.1

146

8,670

Calendar year 1955: Max 154 Mln 0.2 Mean 40.7 Ac-ft 29,480

Water year 1955-56: Max 166 Mln 0.2 Mean 122 Ac-ft 88,290

Discharge measurement made on this day. 

* Field estimate made on this day.
276 SAN JOAQUIN RIVER BASIN

North Pork Willow Creek near Bass Lake, Calif.

Location. Lat 37°17'20", long 119°31'45", in SE-J- sec. 26, T. 7 S., R. 22 E., on right 

bank 1,500 ft downstream from Bass Lake spillway and 2.5 miles southeast of town of 

Bass Lake.

Drainage area.--50.8 sq mi.

Records available.--May 1940 to September 1956. Prior to October 1944, published as 

Willow Creek below Crane Valley Reservoir. October 1944 to September 1954 published 

as below Crane Valley Reservoir."

Gage. Water-stage recorder. Altitude of gage is 3,200 ft (from topographic map). 

Average discharge.--16 years, 19.4 cfs (14,050 acre-ft per year).

Extremes.--Maximum discharge during year, 660 cfs Jan. 4 (gage height, 5.28 ft); minimum 

daily, 0.4 cfs Oct. 1-5, Dec. 15-17.

1940-56: Maximum discharge, 847 cfs Feb. 11, 1941 (gage height, 5.85 ft); minimum 

daily, 0.1 cfs Nov. 13-16, 1940.

Remarks.--Records good. Plow regulated by Bass Lake (usable capacity, 45,100 acre-ft) 

and diversion into Pacific Gas & Electric Co. conduit No. 3 near Bass Lake (see preceding page). Brown's Creek ditch diverts up to 95 cfs at times from South Fork Willow 

Creek into Bass Lake.

Cooperation. Water-stage-recorder graph and three discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Dec. 6-22)

l.o 

1.2 

1.4

1.6 

3.1 

5.6 

9.3

1.7 

2.0. 

2.5 

3.0 

3.5 

4.0 

5.0

18

33

73

129

205

309

574

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

S*

.4

.4

.4

»*.S

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

4.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

16.4

0.53

33

Nov.

 0.6

.6

.6

.6

.6

.6

.6

.6

.7

.7

.7

.8

.9

.9

.9

1.0

1.0

.9

1.0

~T5 1.2

.8

.8

.8

.8

.8

.8

.8

.8

23.4

0.78

46

Dec.

1.7 

1.0

.9

.9

.9

1.5

*.6

.8

8

.6

.5

.5

.5

.5

.1!

.4

.4

.5

.9

1.1

.6

12

~IS 431

6.7

6.5

5.8

2.9

2.6

2.4

2.4

504.3

16.3

1,000

Jan.

2.4 

2.2

2.1

241

502

460

405

366

327

*334

*267

*173

 51

1.3

T77

135

171

122

76

27

1.4

1.8

48

87

162

323

478

421

344

269

205

6,006.9

194

11,910

Feb.

156 

121

52

1.4

1.3

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

^9_

.9

.9

2.9

1.3

1.1

1.1

1.0

1.0

1.0

358.8

12.4

712

Mar.

ft

1.0

1.0

1.0

1.0

.9

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1

1

1

*1

1.0

.9

.9

.9

.9

.8 7$

.8

.9

29.9

0.96

59

Apr.

1.1 

1.0

Q

tf

.9

.9

.9

.9

.9

1.0

1.2

1.4

1.6

1.5

1.4

1.4

1.3

1.3

1.2

1.3

1.4

1.4

1.5

1.6

1.6

2.5 2~^

1.6

1.5

1.4

40.0

1.33

79

May

1.4

1.3

1^3

4.3

1.9

1.7

1.7

1.8

2.7

2.0

2.6

2.4

2.2

2.0

1.8

1.8

 1.9

76

177

160

128

166

200

269

212

168

158

139

128

103

*91

2,209.8

71.3

4,380

June

112 

125

T5J

111

95

92

89

48

34

33

32

31

31

30

28

26

25

24

28

15

1.8

1.6

1.4

ITT

1.5

1.6

1.6

1.6

1.6

1.4

1,147.5

38.2

2,280

July

1.5

1.6

1.6

1.5

1.6

1.6

1.6

1.6

1.6

 1.6

1.7

1.7

1.8

177

1.6

1.6

1.6

1.6

1.6

 1.6

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.3

1.2

3^3

1.2

47.1

1.52

93

Aug.

fcf

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9

.9

.9

T|

.8

.8

.8

.8

.8

.8

.8

. 3

29.6

0.95

59

Sept.

*$

.8

.8

.8

*.8

is

.8

.8

.8

.8

*.8

.8

.8

.7

.7

.7

.7

.7

.7

.7

.7

.6

.6

.6

.7

.7

.6

.6

21.8

0.73

43

Calendar year 1955: Max 431 Mln 0.2 Mean 2.90 Ac-ft 2,100

Water year 1955-56: Max 502 Mln 0.4 Mean 28.5 Ac-ft 20,690

Discharge measurement made on this day. 

* Field estimate made on this day.
SAN JOAQUIN RIVER BASIN 277

Willow Creek at mouth, near Auberry, Calif.

Location. Lat 37°09'10", long 119°27'30", In NE£ sec. 16, T. 9 S. , R. 23 E., on left bank 

40 ft upstream from bridge, 0.4 mile upstream from mouth, 1.3 miles downstream from 

Whiskey Creek, and 4.3 miles northeast of Auberry.

Drainage area. 130 sq mi.

Records available. January 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 1,200 ft (from topographic map).

Extremes. Maximum discharge during year, 12,000 cfs Dec. 23 (gage height, 28.5 ft, from 

floodmarks), estimated on basis of rate of inflow Into Bass Lake; no flow Oct. 1-31. 

1952-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 4 to Oct. 31, 1955.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Plow regulated by Bass Lake (capacity, 45,100 acre-ft) and diversion into Pacific Gas 

& Electric Co. conduit No. 3 near Bass Lake (see p. 275).

Cooperation. Water-stage-recorder graph and 11 discharge measurements furnished by

Southern California Edison Co. in connection with a Federal Power Commission project.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

3.3

3.5 

3.7 

3.9 

4.2 

4.5 

5.0

.1

.4

1.0

3.2

7.2

18

40

75

190

405

725

1,160

4.0 

4.2 

4.4 

4.7 

5.0 

5.5 

6.0 

6.5 

7.0

138

216

8.0

9.0

11.0

13.0

15.0

17.0

19.0

21.0

24.0

435 

770 

1,680 

2,200 

2,700 

3,5OO 

4,500 

5,7OO 

7,900

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

o

0

*o

0

0

0

0

0

0

Nov.

1\ 0.3

J ( )

.7

> 3

5.9

3

2.4

1.9

1.7

1.7

1.9

2.1

2.2

72.7

2.42

144

Dec.

**15

15

7.6

14

*38

20

13

10

9.0

8.3

7.4

7.0

6.4

6.1

14

35

55

1,020

7.500 

4,500

2,500

1,200

950

700

625

400

500

20,211.8

652

40,O9O

Jan.

450

400

250

240

720

580

510

670

678

642

636

534

425

274

388

667

636

528

471

447

380

424

1,330 

780

1,820

1,630

1,630

1,240

1,020

882

770

22,052

711

43,740

Feb.

667

610

520

440

360

300

240

240

200

200

190

19O

180

180

160

150

148

156

148

135

113

109

289

144

119

118

116

110

108

6,640

229

13,170

Mar.

104

105

110

107

104

94

88

67

58

61

62

58

*55

56

55

54

54

56

62

61

58

60

62

65

70

67

62

60

58

58

59

2,150

69.4

4,260

Apr.

67

58

51

52

51

50

50

50

51

55

60

92

91

72

66

78

84

89

88

*89

87

83

76 

74

75

236

286

193

166

165

- ----

2,785

92.8

5,520

May

160

141

124

1.120

507

300

270

225

335

280

332

*300

230

190

168

152

139

159

*270

302

259

272

300 

370

332

252

238

198

184

153

125

8,387

271

16,640

June

130

146

142

137

*114

101

101

87

51

50

47

44

41

41

43

39

34

31

28

36

27

24

22

21

21

20

18

17

16

15

- - - - -~

1,644

54.8

3,260

July

14

14

*17

14

13

13

12

12

11

11

10

10

10

10

9.4

9.1

8.9

8.5

8.3

8.0

7.6

7.1

6.3 

5.6

5.3

5.5

5.3

5.0

5.0

4.4

4.5

284.6

9.18

564

Aug.

4.2

4.3

4.2

*4.2

3.9

3.8

*3.8

3.7

3.3

3.2

3.1

2.9

2.7

2.7

2.8

2.9

2.9

2.8

2.7

2.7

2.7

2.5

2!3

2.3

2.3

2.3

2.3

2.2

*2.1

2.1

92.3

2.98

183

Sept.

2.1

270

1.9

1.8

1.8

1.7

1.6

1.5

1.4

1.4

1.4

*1.3

1.3

1.3

1.3

1.3

1.3

I"!"E~

l!2

1.3

1.4

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.3

43.0

1.43

85

Calendar year 1955: Max 7,50O Mln O Mean 66.5 Ac-ft 48,170

Water year 1955-56: Max 7,5OO Mln o Mean 176 Ac-ft 127, 7OO

* Discharge measurement or observation flow made this day.

** Field estimate made on this day.

Note. No gage-height record Oct. 8 to Nov. 4, Nov. 6-21, 23, Dec. 4-7, 23-28, Dec. 3O to Jan. 9, 

Feb. 2-16; discharge estimated on basis of dally Inventory of computed flow at numerous published 

and unpublished stations in the upper San Joaquln River basin.

493801 O - 59 - 19
278 SAN JOAQUIN RIVER BASIN

San Joaquin River below Kerckhoff powerhouse, Calif.

Location. Lat 37°04'45", long 119°33'35", in NW£ sec. 10, T. 10 S., R. 22 E., on left

bank 1.1 miles downstream from Kerckhoff powerhouse and 1.4 miles upstream from Big

Sandy Creek.

Drainage area. 1,480 sq mi. 

Records available. April 1910 to September 1914, December 1936 to December 1937, December

1942 to September 1956. Published as "near North Fork" 1910-14. 

Gage. Water-stage recorder. Datum of gage is 563.4 ft above mean sea level (levels by

Bureau of Reclamation). Prior to Oct. 1, 1914, at site 11 miles upstream at different

datum.

Average discharge.--17 years (1910-14, 1943-56), 2,434 cfs (1,762,000 acre-ft per year). 

Extremes. Maximum discharge during year, 92,200 cfs Dec. 23 (gage height, 51.0 ft, from

floodmarks), from rating curve extended above 20,000 cfs on basis of velocity-area

studies, computed flow over Kerckhoff Dam, and peak flow of San Joaquin River near

Friant; minimum daily, 193 cfs Nov. 6.

1910-14, 1936-37, 1942-56: Maximum discharge, that of Dec. 23, 1955; minimum daily,

71 cfs Nov. 7, 1949. 

Remarks. Records good except those for periods of no gage-height record, which are fair.

Flow regulated by 12 powerplants and 7 reservoirs with total usable capacity of about

365,000 acre-ft. Earliest storage began in 1901 at Bass Lake. See records for Florence,

Huntington, and Shaver Lakes, pages 258,269,272 . Contents of Bass Lake was 22,600

acre-ft on Sept. 30, 1955, and 25,900 acre-ft on Sept. 30, 1956. 

Cooperation. Water-stage-recorder graph, Telemark readings, and" 13 discharge measurements

furnished by Southern California Edison Co. in connection with a Federal Power

Commission project.

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

6.7

7.0

8.0

10.0

12.0

14.0

188

224

380

884

1,630

2,720

18.0

22.0

25.0

30.0

35.0

45.0

5,910 

10,300 

14,800 

25,000 

37,800 

70.00O

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Moan

Ac-ft

Oct.

407

289

497

678

750

650

536

*606

383

576

570

670

716

651

348

301

808

623

730

945

782

323

223

595

884

806

732

625 

665

478

406

18,253

589

36,200

Nov.

712

*831

784

729

206

193

750

726

629

553

607

370

263

622

689

752

902

516

432

474

786

970

607

272

340

405

388

714 

835

837

17,894

596

35,490

Dec.

1,260

1,040

628

590

688

*1,060

1,390

1,250

1,270

*1,100

615

1,050

830

1,140

1,190

1,320

907

587

1,200

1,890

1,930

9,200

57.000

40,600

15,500

11,000

9,300

6,870 

5,720

4,550

4,550

187,225

6,040

371,400

Jan.

4,200

3,800

3,620

3,450

4,000

3,500

3,600

3,400

3,350

3,280

3,410

3,440

3,460

*5.240

3,740

6,450

4,770

4,100

3,860

*3,660

3,500

3,440

7,440

5,010

10 . 400

9,800

8,000

6,120 

5,140

4,730

*4,340

144,250

4,653

286,100

Feb.

4.090

3,760

3,690

3,460

3,420

3,420

3,110

2,980

*2,950

3,130

3,160

3,130

3,220

3,230

2.810

3,580

3,740

3,100

3,190

3,740

3,660

3,720

3,990

3,680

3,680

3,450

3,580

3,580 

3,590

99,840

3,443

198,000

Mar.

3,580

3,330

2,430

2,140

2,130

2.120

2,140

2,140

2,170

*2,630

2,810

3,000

2,850

2,860

2,930

2,760

2,860

3,180

3,330

3,260

3,440

3,540

*3,530

3,530

3,550

3,590

3,590

5.700 

3,580

3,660

3,660

94,020

3,033

186,500

Apr.

3,700

3,700

3,630

5.250

3,400

5,590

5,680

4,150

4,640

4,950

4,570

4,450

4,090

5,850

5,590

5,760

5,780

*4,010

4,050

4,510

4,770

4,850

5,550

5,640

6,180

6.610

6,110

5,280 

5,100

5,140

154,580

4,486

266,900

May

5,550

5,440

5,820

11.500

7,670

6,270

5,950

5,570

*6,000

5,460

5,550

5,570

4,770

4.610

4,890

5,420

5,960

5,640

6,910

6,180

7,810

9,450

alO.OOO

alO,000

a8,700

*a9,000

9,040

8,100 

8,250

8,540

8,500

217,100

7,005

450,600

June

7,680

8,250

7,900

8.450

7,900

6,760

7,260

7,460

7,570

8,010

8,010

7,460

7,680

7,160

6,560

5.550

5,820

6,180

6,960

*6,510

6,270

6,270

6,560

6,810

6,610

6,410

7,110

7,550 

7,990

7,440

- --"

215,750

7,124

425,900

July

6,510

5,440

4,690

4,310

4,720

4,850

4,770

4,790

4,790

4,730

4,410

4,150

4,790

4,670

4,350

4,410

4,490 *5,eeo

5,eoo

4,250

5,660

4,770

5,350

6,160

7.750

5,750

5,600

5,460 

4,750

4,050

5.550

151 > 550

4,889

500,600

Aug.

2.850

2,600

2,520

1,980

2,020

*2,000

2,170

2,O8O

2,240

2,120

1,990

2,09O

2,090

2,000

2,090

1,940

1,950

1,920

1,960

1,960

1,960

1,840

1,960

1,870

1.760

1,860

1,760

1,800 

1,900

1,760

1,760

62,780

2,025

124,500

Sept.

1.760

1,760

1,760

1,760

1,750

1,760

*1,760

1,760

1,760

1,750

1,470

1,740

*1,740

1,580

1,740

1,590

1,670

1,600

1,560

1,740

1,430

1,740

1,730

1,610

1,620

1,700

1,530

1,730 

1,730

1.500

...

49,930

1,664

99,030

Calendar year 1955 : Max 57,000 Mln 193 Mean 1,979 Ac-ft 1,433,000

Water year 1955-56 : Max 57,000 Min 193 Mean 3,801 Ac-ft 2,759,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and approximate 

range in stage.

Note. Discharge computed from daily inventory of computed flow at numerous published and unpublished stations in the upper San Joaquin River basin Dec. 25 to Feb. 9.
SAN JOAQUIN RIVER BASIN 279

Fine Gold Creek near Friant, Calif.

Location. Lat 37°04'00", long 119°38'50", in NW^NEtr sec. 14, T. 10 S., R. 21 E., on right 

bank 1,500 ft downstream from Willow Creek and 5.5 miles northeast of Friant.

Drainage area. 92.8 sq mi.

Records available. October 1936 to September 1956.

Page.--Water-stage recorder. Altitude of gage is 620 ft (from topographic map).

Average discharge. 20 years, 39.6 cfs (28,670 acre-ft per year); median of yearly mean 

discharges, 26 cfs (18,800 acre-ft per year).

Extremes. Maximum discharge during year, 7,450 cfs Dec. 23 (gage height, 17.94 ft), from 

rating curve extended above 3,700 cfs on basis of logarithmic plotting; no flow Oct. 1 

to Nov. 22, July 25 to Sept. 30.

1936-56: Maximum discharge, 10,300 cfs Mar. 12, 1938 (gage height, 20.4 ft, from 

floodmarks), from rating curve extended above 6,500 cfs; no flow at times during each 

year.

Remarks. Records fair. No storage or diversion above station. 

Revisions. WSP 1091: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Jan. 25 to Feb. 10,

Feb. 23 to Apr. 12, June 25 to July 25) 

Oct. 1 to Dec. 23 Dec. 23 to Sept. 3o

1.5

1.6

1.7

1.8 

2.0 

2.3

0

.5

1.2

2.5

6.0

13

2.7 

3.0 

3.5 

4.0 

5.0 

6.0

27

46

98

173

396

675

1.5

1.6

1.7

1.8

1.9

2.0 

2.2 

2.5

.3

.8

2.0

3.7

6.0

12

30

3.0

3.5

4.0

5.0

7.0

10.0

14.0

76

135

210

414

975

2,150

4,340

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Moan

Ac-ft

Oct.

(*)

( )

' '

O

0

0

Hov.

0

0

0

o

0

0

0

0

0

o

o

0

0

0

o

o

0

0

0

o

0

0

.5 

.9

iiP.

1.0

1.0

1.0

1.0

1.0 - i-.o

7.4

0.25

15

Dec.

11

14

7.0

4.9

3.7

39

*28

12

24

14

10

7.8

6.6

6.0

5.5

5.1

4.9

5.3

33

50

34

479

3.920 

2,710

1,380

773

 799

342

205

149

292

^1,374.8

367

22.56O

Jan.

191

155

135

123

120

*117

104

125

102

92

87

84

78

84

142

234

135

116

108

122

112

111

572 

*326

*1.790

1,100

1,140

562

388

304

*253

9,112

294

18,070

Feb.

214

189

170

156

145

135

123

117

111

109

105

99

95

*91

90

87

83

88

80

77

76

76

178 

82

7O

74

65

64

IS

3,111

107

6,170

Mar.

59

59

59

58

*56

55

52

52

53

52

52

49

48

47

46

44

44

43

42

42

42

42

41 

40

38

37

36

36

34

32

33

1,423

45.9

2,820

Apr.

40

36

33

30

*26

25

24

21

19

18

23

104

87

74

58

48

42

*37

29

26

24

23

22

21

20

36

95

56

38

32

1,167

38.9

2,310

May

27

24

23

242

108

65

*68

56

106

72

69

63

56

48

42

38

36

36

33

31

28

26

24 

22

22

21

19

19

18

17

IS

1,475

47.6

2,930

June

16

Ts

15

14

14

*13

12

11

11

10

9.3

9.0

8.1

8.1

8.4

9.0

8.1

7.8

6.9

6.9

6.3

5.5

5.3 

4.6

3.9

3.9

3.4

2.7

2.3

1.8

253.3

8.44

502

July

1.5

 1.5

l.B

1.8

1.5

1.4

1.4

1.4

1.2

1.0

1.0

1.0

.8

.8

.8

.7

.6

.5

.4

.2

.2

.2

.1 

.1

0

O

o

o

0

0

*o

21.9

0.7143'

Aug.

(*)

(*)

O

O

o

Sept.

O

O

0

Calendar year 1955: Max 3,92O Min o Mean 39.8 Ac-ft 28,790

Water year 1955-56: Max 3,92O Mln 0 Mean 76.4 Ac-ft 55,420

Peak discharge 

(8.12 ft); Jan. 2

(base. 500 efs).--Dee. 23 (5 a.m.) 7,45O cfs (17.94 ft)j Dec. 26 (5 p.m.) 1,370 cfs 

3 (4 p.m.) 831 ofs (6.52 ft); Jan. 25 (1 p.m.) 3,940 cfs (13.38 ft).

Discharge measurement or observation of no flow made on this day.
280 SAN JOAQUIN RIVER BASIN

Millerton Lake at Friant, Calif.

Location.--Lat 37°00'00", long 119°42'10", in SWi sec. 5, T. 11 S., R. 21 E., near center 

of Friant Dam on San Joaquin River, immediately upstream from Cottonwood Creek, 

0.9 mile northeast of Friant.

Drainage area.--1.633 sq mi.

Records available. October 1941 to September 1956.

Gage.--Water-stage recorder. Datunrof gage is at mean sea level (levels by Bureau 3f Reclamation) . Prior to May 29, 1944, staff gages on left bank at same datum.

Extremes.--Maximum contents during year, 470,100 acre-ft Dec. 28 (elevation, 56?.41 ft)j 

minimum, 134,100 acre-ft Oct. 16 (elevation, 468.04 ft).

1941-56: Maximum contents, 517,300 acre-ft May 21, 1954 (elevation, 577.34 ft>; 

minimum since initial season of normal operation, 42,660 acre-ft Nov. 8, 1949 (SiW 

vation, 406.6 ft).

Remarks. Reservoir is formed by gravity-type concrete dam with spillway near cent?.?, completed in December 1942. Control valves installed in February 1944, and spillway gates 

installed in November 1947. Usable capacity, 503,200 acre-ft between elevations 375.4 

ft (invert of river outlet) and 578.0 ft (top of drum-type spillway gates) above mean 

sea level. 17,300 acre-ft is not available for release. Millerton Lake is one of the 

storage units in Central Valley project. Records including extremes, show total contents at 12 p.m.

Cooperation.--Records of contents furnished by Bureau of Reclamation.

Capacity table, water year 1955-56 (elevation, in feet, and 

contents, in acre-ft)

460

470

480

490

500

510

117,500

138,400

161,700

187,500

215,600

246,300

520

530

540

550

560

570

279,400

314,900

353,000

393,400

436,500

482,200

Contents, in thousands of acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

-(*) W

Oct.

138.3 

137.5

137.3

137.3

137.2

137.0

136.6

136.4

135.8

135.7

135.6

135.5

135.5

135.5

134.8

13AJ.

134.4

134.4

134.6

135.3

135.9

135.8

135.5

135.9

136.7

137.5

138.0

138.2

138.6

138.7 

138.6

470.11

-100

Nov.

159.1 

139.8

140.4

141.1

140.6

140.2

140.8

141.3

141.7

141.7

141.8

141.4

141.1

141.5

142.4

143.7

145.3

146.2

146.9

147.7

149.0

150.7

151.7

152.1

152.6

153.1

153.8

155.0

156.4

157.9

478.43

+19,300

Dec.

160.5 

162.5

163.2

164.2

165.4

167.4

169.8

171.9

173.9

175.7

176.4

177.5

177.6

178.2

179.0

180.5

182.2

183.3

185.4

188.5

191.9

210.3

332.6

421.1

446.2

457.5

468.1

470.1

469.2

467.1 

467.1

566.77

+309,200

Jan.

466.0 

464.1

461.2

456.6

452.8

446.5

441.6

436.7

432.2

429.2

427.0

425.2

423.1

420.9

419.7

423.8

424.5

423.8

422.8

421.2

419.6

417.5

424.0

424.7

439.3

449.0

458.6

460.1

459.2

457.0 

454.3

563.98

-12,800

Feb.

450.7 

445.6

440.0

433.6

426.8

418.8

409.5

400.4

391.2

382.5

373.5

365.3

358.2

351.5

344.7

339.7

334.8

329.0

322.6

317.0

311.0

304.9

300.2

294.8

290.1

286.6

285.1

286.1

289.1

522.80

-165,200

Mar.

292.2 

295.4

296.7

297.3

297.7

298.0

298.9

299.1

298.9

297.7

296.3

295.0

292.5

289.0

285.1

280.0

275.5

271.2

265.8

259.7

253.8

247 .9

242.2

236.9

231.5

226.2

221.1

217.0

212.7

208.6 

204.7

496.23

-84,400

Apr.

200.9 

197.3

193.8

189.9

186.7

184.4

181.8

179.8

179.1

179.4

179.7

182.3

185.7

189.4

193.0

196.7

200.5

204.0

206.6

209.3

212.2

214.9

219.5

224.5

229.6

235.6

242.4

248.2

253.2

256.7

513.22

+52,000

May

259.1 

261.0

263.4

277.8

285.5

289.8

293.6

296.1

300.5

305.4

310.8

317.4

323.0

326.8

328.5

331.3

334.8

337.4

342.5

345.5

350.7

357.8

365.9

274.8

378.5

382.2

385.9

387.3

389.2

391.5 

394.2

550.17

+137,500

June

395.0 

396.1

396.9

399.8

402.5

402.8

404.1

405.9

407.6

410.3

412.7

414.5

417.0

418.4

417.6

414.8

411.9

410.8

412.2

412.9

412.9

413.6

415.7

418.4

420.7

422.7

426.0

430.3

436.6

441.7

561.17

+47,500

July

445.5 

446.9

446.7

446.3

446,7

447.8

449.0

450.1

451.2

452.1

452.2

451.8

452.6

453.3

453.2

453.1

453.4

452.3

450.8

450.2

452.5

452.9

453.9

456.7

462.8

464.6

466.2

367.3

467.0

465.1 

462.5

565.76

+20,800

Aug.

458.4 

454.0

449.8

444.7

439.6

434.8

430.2

425.2

420.1

414.6

408.6

402.8

397.1

391.4

385.7

379.8

274.0

368.4

362.8

357.2

351.3

345.2

339.4

333.4

327.3

321.4

315.4

309.3

303.3

297.2 

291.2

523.41

-171,300

Sept.

285.2 

279.2

273.3

267.5

261.6

255.9

250.5

245.3

240.5

237.3

234.3

232.2

230.3

228.4

226.9

225.2

223.6

222.1

219.8

217.3

214.7

212.8

210.9

208.9

206.6

204.6

200.8

197.5

195.3

192.7

491.92

-98,500

Calendar year 1955.................... $ +237,900

Mater year 1955-56.................... t +54,000

t Elevation, in feet, at end of month. 

* Change in contents in acre-feet.
SAN JOAQUIN RIVER BASIN 281

Priant-Madera Canal at Priant, Calif.

Location. Lat 37°00'10", long 119°42'20", in NW^SW^ sec. 5, T. 11 S., R. 21 E., at Priant 

Dam, 0.9 mile northeast of town of Priant.

Records available. October 1943 to September 1956. Prior to October 1954, published as 

Madera Canal near Priant, Calif.

gage. Discharge computed on basis of valve openings in dam and head on valves. Prior to 

Oct. 1, 1951, water-stage recorder at several sites downstream at various daturas. 

Oct. 1, 1951, to Sept. 30, 1954, water-stage recorder at site 0.9 mile downstream at 

altitude 435 ft (now used as supplementary gage).

Average discharge. 13 years, 202 cfs (146,200 acre-ft per year).

Extremes. 1943-56: Maximum daily discharge, 1,040 cfs July 2, 1956; no flow during 

several months in each year.

Remarks. Records good. Canal diverts from Millerton Lake at right end of Priant Dam for 

for irrigation between San Joaquin and Presno Rivers.

Cooperation. Records furnished by Bureau of Reclamation and reviewed by Geological Survey. 

Revisions (water years). WSP 1151: 1944-48.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

0

0

O

Nov.

O

0

o

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0 

0

0

0

0

0

0

o

o

0

0

o

o

o

o

0

0

0

168

276

343

23s

68

68

67

67

67

28

1,358

46.8

2,69O

Mar.

0

O

0

0

0

0

0

o

o

o

o

62

102

142

174

182

217

251

249

237

245

26O

285

*307

314

333

348

334

*389

414

456

5,281

170

1O,470

Apr.

457

451 

435.

421

415

434

448

459

465

475

426

254

150

93

83

81

97

135

159

161

167

169

*201

243

285

327

149

49

49

50

7,788

260

15,450

May

50

50 

*68

92

1OO

101

87

77

80

63

49

50

50

81

1O5

168

222

*262

281

293

298

349

422

478

512

471

473

554

625

627

600

7,738

250

15,350

June

578

606 

631

633

635

636

616

604

593

574

575

631

702

747

768

766

764

727

*757

8O4

826

851

853

922

951

954

981

1,001

1,019

1.032

22,737

758

45,100

July

1,037

1.040 

*1,022

998

973

908

875

876

*877

899

927

927

914

9OO

917

90O

879

916

979

1,002

1,OO3

1,004

1,005

1,018

1,032

1,036'

1,037

1,038

1,039

1.O38

1,036

30,052

969

59,610

Aug.

1.055

1,029 

1,028

1,027

1,022

1,017

992

975

968

965

957

951

931

899

893

887

*881

875

868

862

855

849

842

875

899

891

883

874

866

*857

869

28,616

923

56,760

Sept.

878

868 

819

777

767

783

795

785

775

768

761

737

693

669

666

665

657

615

*610

464

265

265

261

259

258

219

199

196

194

192

16,834

561

33,590

Calendar year 1955: Max 99O Min 0 Mean 302 Ac-ft 218,800

Water year 1955-56: Max 1,04O Mln o Mean 329 Ac-ft 238,800

* Discharge measurement made on this day.
282 SAN JOAQUIN RIVER BASIN 

Friant-Kern Canal at Friant, Calif.

Location. Lat 36°59'53", long 119°42'11" in SE&3W£ sec. 5, T. 11 S., R. 21 E., at Friant 

Dam and 0.9 mile northeast of town of Friant.

Records available. March 1949 to September 1956.

Qage. Discharge computed on basis of valve openings in dam and head on valves. Prior to 

July 8, 1949, staff gages at various sites and daturas. July 8, 1949, to Sept. 30, 1954, 

water-stage recorder at site 0.25 mile downstream at altitude 460 ft (now used as supplementary gage).

Average discharge. 7 years, 927 cfs (671,100 aere-ft per year).

Extremes. 1949-56: Maximum daily discharge, 4,006 cfs Feb. 23, 1956; no flow during 

during several months each year.

Remarks. Records good. Canal diverts from Millerton Lake at left end of Friant Dam for 

irrigation in upper San Joaquin Valley.

Cooperation. Records furnished by Bureau of Reclamation and reviewed by Geological Survey.

Discharge, in cubic feet per second, water year -October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

495

494 

488

502

615

613

580 

555

527

523

546

585

581

585

229

508

 491

 503

 442

 386

 347

 280

 278

 275

*283

 312

*335

356

36O

338

325

14,069

454

27,910

Nov.

327

348 

347

339

340

336

337 

342

361

417

450

4*8

444

 337

106

 5O

O

O

0

0

0

0

o

0

o

0

o

0

o

5,279

176

10,470

Dec.

'0 0

O

0

O

87

O

0

0

0

0

0

O

0

0

o

o

0

o

o

0

o

o

0

0

o

0

0

o

0

87

2.81

173

Jan.

0

o 

o

0

o

o

o

0

0

o

0

0

0

0

o

o

o

0

0

80

38

O

0

O

O

o

o

o

0

0

o

118

3.81

234

Feb.

188

500 

612

849

974

1,730

2,079 

2,054

2,028

2,279

3,031

3,129

3,124

3,278

*3,478t

3,635

 3,699

3,663

3,766

3,848

3,888

3,977

4.0O6

3,91O

3,589

2,992

2,503

1,831

1,291

75,931

2,618

150,600

Mar.

1,301

1,272 

1,271

1,359

1,381

1,398

1.152 

1,431

 1,579

1,825

1,971

2,041

2,156

2,282

 2,364

2,423

2.43O

2,684

3,242

3,433

3,545

3,758

3,816

3,826

3,851

5.882

3,824

3,454

3,407

3,308

2,272

78,938

2,546

156,600

Apr.

5.525

3,299 

3,221

3,145

3,010

2,731

2,784 

2,862

2,836

2,808

2,754

2,178

1,625

1,425

1,303

1,336

1,293

1,250

1,246

1,19O

1,263

1,368

1,255

*1.146

1,650

1,790

1,606

1,549

1,579

2,124

60,931

2,031

120,900

May

2,368

2,572 

»2,757

2.760

2,726

2,746

2,718 

2,715

2,123

1,498

1,165

563

373

376

678

746

884

1,050

1,154

1,430

1,593

 1,728

1,825

1,901

2,030

2.O52

2,063

2,109

1,912

1,905

1,912

54,432

1,756

1O8,OOO

June

1.916

1,919 

1,980

2,O35

2,139

2,086

2,OOO 

2,105

2,189

2,269

2,477

2,687

3,113

3,259

3,324

3,338

5,577

5,771

3,896

 5.918

3,900

3,861

3,868

3,880

3,892

3,902

3,915

3,900

3,353

3,342

91,811

3,060

182,100

July

3,413

3,422 

 3,425

3,247

3,158

3,049

2.962 

3,025

3,058

3,062

3,064

3,076

3,102

3,105

3,136

3,157

*3,152

3,155

3,184

3,221

3,2O1

3,266

3,461

3,545

5.616

3,540

3,470

3,474

3,476

3,472

3,485

101,179

3,264

2OO,7OO

Aug.

3,491

3,437 

3,300

3,199

5.180

3,204

3,266 

3,288

3,516

3,661

3,683

3,794

3,793

3,764

3,753

3,737

3,680

3,628

3,646

3,733

3,786

 5.815

3,776

3,737

3,695

3,704

3,751

3,805

3,806

3,765

3,740

112,133

3,617

222,400

Sept.

3,752

3.756 

3,719

3,710

3,747

3,645

3,493 

3,409

3,298

2,393

 1,981

1,859

1,758

1,676

1,596

1,609

1,598

1.548

 1,636

1,915

1,818

1,801

1,800

1,827

1,879

1,871

2,383

2,530

1,994

1,701

71,702

2,390

142,200

Calendar year 1955: Max 3,014 Min o Mean 1,121 Ac-ft 811,600

Water year 1955-56: Max 4,OO6 Min o Mean 1,821 Ac-ft l,322,OOO

* Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 283

San Joaquln River below Friant, Calif.

Location. Lat 36°59>04", long 119°43'24", in SVJ^ sec. 7, T. 11 S., R. 21 E., on left bank 

0.5 mile west of Friant, 1.5 miles downstream from Cottonwood Creek, 2 miles downstream 

from Friant Dam, and at mile 268.1.

Drainage area.--1.675 sq mi.

Records available. October 1907 to December 1908 (gage heights only), January 1909 to 

September 1956. Published as "near Pollasky" October 1907 to December 1908 and as 

"near Friant" January 1909 to September 1938. Yearly summaries for period 1908-9 published in WSP 881.

Sage. Water-stage recorder. Datum of gage is 294.00 ft above mean sea level (levels by 

Bureau of Reclamation). Oct. 18, 1907, to Nov. 9, 1913, staff gage at site 4.5 miles 

upstream at different datum. Nov. 10, 1913, to Sept. 30, 1938, water-stage recorder at 

site 2.5 miles upstream at different datum.

Average discharge. 49 years (1907-56), 2,339 cfs (1,693,000 acre-ft per year), including 

diversions to Priant-Madera Canal, 1944-56, and to Friant-Kern Canal, 1949-56.

Extremes. Maximum discharge during year, 7,120 cfs Jan. 5 (gage height, 9.00 ft); minimum, 57 cfs Nov. 16, 17.

1907-56: Maximum discharge, 77,200 cfs Dec. 11, 1937 (gage height, 23.8 ft, site 

and datum then in use); minimum, 5.5 cfs Oct. 20, 1941.

Remarks --Records good. Plow regulated by Millerton Lake beginning in 1944 (see p. 280) 

anaty other reservoirs described in Remarks for San Joaquin River below Kerckhoff 

powerhouse. Diversion for irrigation through Friant-Madera and Friant-Kern Canals (see 

p. 281, 282). Records of chemical analyses for the water year 1956 are given in

Cooperation. Thirteen discharge measurements furnished by Bureau of Reclamation. 

RevlslonsTwater years) .--WSP 843: 1914(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 25 Dec. 26 to Sept. 30

1.9 

2.2 

2.6 

3.0 

3.5

60

96

175

300

535

4.0 

5.0 

6.0 

8.0

840

1,630

2,680

5,400

2.4

2.7 

3.0 

3.5

132

210

305

525

4.0 

5.0 

7.0 

9.0

840

1,680

4,150

7,120

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12 

13

14

15

16

17

18

19

ZO

Zl

22

23

24

25

26

27

28

29

30

31

Tobal

Mean

Ao-ft

t)

*V

ft }

**)

Oct.

130 

130

135- 132

130

130

126 

117

119

119

119

115 

*108

108

108

108

108

108

108

108

*108

110

110

104

96

93

89

89

89

"So 86 

oo

3,425

110

6,790

-100

27,910

0

970

Nov.

83 

86

88

88

88

88

88 

88

88

89

88

88 

89

*86

71

61

65

62

63

63

64

*63

64

64

64

64

64

65

65

65

2,254

75.1

4,470

+19,300

10,470

0

510

Dec.

68 

66

65

55

65

106

195 

198

198

200

200

416 

808

808

*808

*500

103

92

93

140

185

173

464

1,500

4,590

6.390

*6,360

6,260

6,210

5,850

5,250

48,426

1,562

96,050

1309,200

173

0

270

Jan.

5,180 

5,140

5,380

6,140

6,360

*6.770

6,126 

6,140

5,850

5,020

4,650

4,650 

4,630

4,630

4,650

4,670

*4,640

4,640

4,630

4,640

4,630

4,640

4,710

5,030

6,020

5,920

6,330

6,260

6,220

6*200

. 6,180

166,650

5,376

330,500

-12,800

234

0

320

Feb.

6.160 

6,140

6,120

6,100

6,090

6,080

6,080 

6,030

5,880

5,420

4,950

4,470 

3,970

3,430

2,940

*2,600

2,600

2,590

2,580

2,590

2,600

2,600

2,620

2,580

2,570

2,220

1,680

1,160

691

111,541

3,846

221,200

-165,200

150,600'

2,690

510

Mar.

505 

5755

505

505

505

505

505 

505

*887

1,450

1,450

1,510 

1,820

2,200

*2,400

2,760

2,570

2,450

2,530

2,780

2,660

2,530

2,360

2,110

2,110

2,100

2,060

1,980

1,980

1,980

1,980

52,697

1,700

104,500

-84,400

156, 600'

10,470

1,070

Apr.

1.690 

1,730

1,730

*1,690

1,630

1,630

1,710 

1,800

1,660

1,560

1,300

744 

505

402

261

258

m

634

1,100

1,670

1,770

1,770

*1,780

1,750

1,700

1,660

1,100

791

791

1,250

38,600

1,287

76,560

+52,000

120,900

15,450

1,110

May

*1,640 

1,890

1,790

1,530

1,530

1,530

1.540 

1,450

1,710

1,630

1,540

1,480 

1,490

2,200

3,090

5,110

5,110

3,120

3,150

3,130

*5,540

4,150

4,180

4,160

4,570

5,150

5,150

*5 , 130

5,140

5,160

5,180

92,910

2,997

184,300

t-137,500

108,000

15,350

2,100

June

5.160 

5,160

5,160

4,720

4,150

4,160

4,160 

4,160

4,180

4,180

4,190

3,540 

2,860

2,690

2,860

2,990

2,980

2,560

1,680

1,650

*1,650

1,160

598

692

646

598

604

604

*610

368

80,480

2,685

159,600

+47,500

182,100

45,100

5,980

July

222 

222

199

190

190

177

169 

169

169

169

169

166 

166

166

166

166

164

161

TSI

164

166

166

*166

161

182

*202

219

246 trig

246

225

5,753

i86

11,410

+20,800

200,700

59,610

4,790

Aug.

152" 204 

202

202

199

199

193 

190

188

188

185

185 

179

179

*177

177

177

177

177

177

177

177

177

177

179

179

177

177

172 

*156

156

5,661

183

11,230

-171,500

222,400

56,760

5,860

Sept.

156 

156

156

156

159

156

154

154

146

159

139

139

142

142

142

144

*14

144

595

604

154" 610

592

456

547

592

604

*604

604 

598

9,476

516

18,800

-98,500

142,200

33,390

2,150

Adjusted for change In reservoir contents, diversions, and evaporation

Mean 

Ac-ft

578 

35,570

584 

54,750

Calendar year 1955: 

Water year 1955-56:

6,598 

405,700

5,177 

518,500

5,647 

209,800

3,061 

188,200

4,470 

266,000

Observed

7,273 

^447,200

Max 6,590 Mln 45 Mean 245 Ac-ft 175,700 

Max 6,770 Mln 61 Mean 1,688 Ac-ft 1,225,000

7,566 

438,300

4,835 

297,300

2,000 

123,000

Adjusted

1,648 

98,040

Mean 2,025 Ac-ft 1,466,000 

Mean 3,942 Ac-ft 2,862,000

* Discharge measurement made on this day.

t Change In contents, In acre-feet, In Millerton Lake.

* Diversion, In acre-feet, to Friant-Kern Canal, 

tt Diversion, In acre-feet, to Friant-Mai}«ra Canal.

** Evaporation, In acre-feet, from Millerton Lake; furnished by Bureau of Reclamation.
284 SAN JOAQUIN RIVER BASIN

Little Dry Creek near Friant, Calif.

Location. Lat 36"56'25", long 119°40'50", in SW^SE^- sec. 28, T. 11 S., R. 21 E., on left 

bank 3.5 miles southeast of Friant and 4 miles upstream from mouth.

Drainage area. 58 sq mi, approximately.

Records available. October 1941 to September 1956 (discontinued).

Gage. Water-stage recorder and concrete control. Datum of gage is 357.02 ft above mean 

sea level (levels by State of California).

Average discharge. 15 years, 6.98 cfs (5,050 acre-ft per year); median of yearly mean 

discharges, 3.3 cfs (2,390 acre-ft per year).

Extremes. Maximum discharge during year, 1,760 cfs Dec. 24 (gage height, 6.70 ft); no 

flow during several months.

1941-56: Maximum discharge, 1,810 cfs Jan. 25, 1952 (gage height, 5.63 ft),from 

rating curve extended above 900 cfs by logarithmic plotting; no flow during several 

months each year.

Remarks. Records fair.

Cooperation. Five discharge measurements furnished by Bureau of Reclamation.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 24, Feb. 6 to Mar. 5, June 5-30)

2.1

Oct. 1 to Dec. 23

16

27

45

84

211

355

635

1,060

Dec. 24 to Sept. 30

0 2.9

.2 3.3

.7 3.8

2.0 4.5

5.5 5.2

40

95

205

420

745

1,290

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

( )

(")

0

0

0

Nov.

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0~.2

0

.2

.2

.1

0

.1

0

0

0

0

0

0.8

0.03

1.6

Dec.

1.4

1.4

.1

TT

.1

.5

.7

.6

.5 

.4

.4

.4

.4

.4

.3

.3

.3

.4

1.1

1.5

1.1

32

*849

1.250

601

*323

310

*155

117

*95

161

3,905.4

126

7,750

Jan.

99

81

89

62

52

*57

44

55

40 

34

32

31

29

30

48

110

55

44

39

55

48

42

183

*97

*124

332

323

167

155

146

135

3,338

108

6,620

Feb.

HI

104

95

87

85

78

71

65

55

50

48

44

40

*34

33

31

29

29

28

27

26

26

103

50

28

28

24

23

22

.

1,480

51.0

2,940

Mar.

21

20

20

19

*18

18

17

17

16 

16

15

14

14

14

13

13

12

12

12

11

11

11

11

*10

9.7

9.1

9.7

9.1

7.9

ill

7.9

415.7

13.4

825

Apr.

8.5

9.1

7.9

*6.7

6.1

6.1

5.5

5.5

6.1 

6.1

8.5

36

26

19

14

11

8.5

*7.9

6.7

6.1

5.5

3.8

3.4

3.4

3.4

7.9

27

15

9.7

7.9

298.3

9.94

592

May

6.1

4.8

*4.1

9.1

7.3

4.4

4.4

4.4

H

6.1

7.3

5.2

3.8

3.0

2.7

2.7

2.7

2.4

2.4

1.9

1.7

1.2

1.1

1.2

1.2

1.1

*.8

.7

^.

.6

112.0

3.61

222

June

0.6

.4

.4

.3

.2

*.2

.2

.1

.1 

.1

.1

0

.1

.1

.1

.1

.1

.1

.1

**.!

.1

.1

.1

.1

.1

.1

.1

.1

0

0

4.3

0.14

8.5

July

(*)

0

0

0

Aug.

0

0

0

Sept.

(*

0

0

0

Calendar year 1955 : Max 1,250 Mln o Mean 12.5 Ac-ft 9,060

Water year 1955-56 : Max 1,250 Mln o Mean 26.1 Ac-ft 18,960

Peak discharge (base. 180 efsi. Dee. 24 (9:30 a.m.) 1,760 cfa (6.70 ftb Dec. 27 (7 a.m.) 509 cfa 

L a.m.) 235 ------- - - (4.72 ft); Dec? 31 (ll'a.m.) 235cfs (3.91 ft)j Jan.'l6 (4 a.m.) 182 cfs (3.71 ft)j Jan.'23 (5 a.m.) 

320 cfs (4.20 ft); Jan. 25 (2 p.m.) 1,260 cfs (5.96 ft).

Discharge measurement or observation of no flow made on this day. 

Field estimate made on this day.
SAN JOAQUIN RIVER BASIN 285

San Joaquin River near Biola, Calif.

Location. Lat 36°49'22", long 120°05'14", in SE^SWi sec. 2, T. 13 S., R. 17 E., on right 

bank 1.9 miles downstream from Skaggs Bridge, 4.2 miles northwest of Biola, and at mile 

236.3.

Drainage area. 1,805 sq mi.

Records available. October 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 200 ft (from topographic map).

Extremes. Maximum discharge during year, 7,240 cfs Dec. 27 (gage height, 10.52 ft); minimum, 51 cfs Nov. 29.

1952-56: Maximum discharge, that of Dec. 27, 1955; minimum, 39 cfs Mar. 22, 1955.

Remarks. Records good except those for period of no .gage-height record, which are fair. 

Flow regulated by Millerton Lake (see p. 280 ) and by other reservoirs described in 

Remarks for San Joaquin River below Kerskhoff powerhouse. Diversions for irrigation 

of about 3,600 acres between stations below Friant and near Biola. Records of chemical 

analyses and water temperatures for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second) 

(Shifting-control method used Apr. 20 to May 2, May 5, 6, IE-14)

Oct. 1 to Dec. 27 Dec. 28 to Mar. 21 Mar. 22 to Sept. 30

3.0 

3.3 

3.6 

4.0 

4.5

78

130

250

450

5.0 

6.0 

8.0

10.5

770

1,620

3,750

7,210

5.1

5.5

6.0

8.0

10.0

10.5

310

570

1,090

3,590

6,390

7,210

3.3 

3.6 

4.0 

4.5 

5.0

104

145

222

360

555

5.5 840

6.0 1,280

7.0 2,440

9.0 4,950

Discharge, in eubie feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27 

28

29

30 

31

Total

Mean

Ac-ft

Oct.

86 

88

90

84

80

84

*86

.87

86

84

82

81

82

81

77

80

76

73

74

78

80

81 

82

82

81

80

74 

72

68

68

67

2,474

79.8

4,910

Nov.

66 

64

65

*65

67

70

72

71

71

72

72

72

77

87

92

81

72

61

59

59

60

57

55"

57

55

57 

56

54

*55

1,975

65.8

3,920

Dee.

59 

65

68

63

60

61

72

103

158

179

185

185

197

819

1,070

1,110

954

356

194

148

136

190 

262

1,660

4,530

6,710

7.120 

7,040

6,820

6,660

*6,040

53,274

1,719

105,700

Jan.

5,640 

5,370

5,230

5,640

5,930

6,390

*6,150

5,860

5,830

5,310

4,760

4,590

4,560

4,540

4,540

4,600

4,580

4,530

4,500

*4,510

4,530

4.490 

4,560

4,640

5,430

6,120

6.540 

6,390

6,170

6,010

5,910

163,850

5,285

325,000

Feb.

5.850 

5,770

5,730

5,750

5,720

5,690

5,670

5,640

5,590

5,350

4,970

4,600

4,210

3,800

3,370

2,970

2,800

2,770

2,740

2,710

2,730

2,720 

2,710

2,710

2,670

2,640

2,210 

1,740

*1.220

113,030

3,898

224,200

Mar.

680 

483

448

420

408

384

372

360

355

856

1,450

*1,470

1,550

1,860

2,060

2,330

2,510

2,330

2,280

2,420

2,540

2.650 

2,560

2,320

2,200

2,180

2,140 

2,060

2,020

2,010

2,000

49,686

1,603

98,550

Apr.

2.000 

1,850

1,730

1,710

1,650

*1,580

1,540

1,670

1,710

1,530

1,500

1,180

752

586

510

395

357

370

560

1,180

1,680

1,780 

1,800

1,820

1,760

1,780

1,740 

1,080

872

833

39,505

1,317

78,360

May

*1.570 

1,600

1,860

1,660

1,530

1,530

al,530

al,400

al,700

al,600

al,530

1,530

1,520

1,510

2,460

2,880

2,930

2,960

2,960

2,960

2,970

3,470 

3,810

3,840

*3,830

4,390

4,640 

4,680

4,680

4.690

4,680

84,700

2,732

168,000

June

,680 

,680

.690

,690

,080

3,800

3,870

3,860

3,840

3,840

3,860

3,810

3,040

2,670

2,620

2,810

2,840

2,810

1,980

*1,640

1,580

1,560 

966

645

674

615

578 

560

550

546

78,484

2,616

155,700

July

426 2l5~

246

209

200

188

180

167

169

159

157

150

145

142

147

154

140

138

139

129

133

134 

*136

138

130

134

145 

150

167

196

190

5,318

172

10,550

Aug.

175 

155

154

157

159

175

167

152

145

139

136

142

157

150

140

136

132

132

134

138

130

123 

T53

124

129

132

144 

142

*138

136

1

4,422

143

8,770

Sept.

119 

120

123

124

117

114

114

114

116

122

116

110

115

117

117

123

127

126

120

146

458

532 

550

568

474

494

542 

*582

586

586

7,772

259

15,420

Calendar year 1955: Max 7,120 Min 45 Mean 228 Ac-ft 164,900

Water year 1955-56: Max 7,12O Min 54 Mean 1,652 Ac-ft 1,199,000

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of recorded range in stage and records for 

San Joaquin River near Friant.
286 SAN JOAQUIN RIVER BASIN

Fresno River near Knowles, Calif.

Location. Lat 37"14'15", long 119°46'25", in NW£ sec. 15, T. 83., R. 20 E., on left bank 

at Fresno Crossing, 0.1 mile downstream from Bean Gulch and 6 miles northeast of 

Knowles.

Drainage area. 132 sq mi.

Records available. September 1911 to December 1913, November 1915 to September 1956.

Sage .--Water-stage recorder and concrete control. Datum of gage is 1,086.4 ft above mean 

sea level (river-profile survey). Prior to June 13, 1930, staff gage 10 ft upstream 

and June 13, 1930, to Jan. 13, 1931, water-stage recorder at site 40 ft upstream, at 

datum about 0.34 ft lower.

Average discharge.--41 years (1911-12, 1916-56), 79.8 cfs (57,770 acre-ft per year); 

median of yearly mean discharges, 68 cfs (49,200 acre-ft per year).

Extremes . Maximum discharge during year, 13,300 cfs Dec. 23 (gage height, 11.52 ft), from 

rating curve extended above 1,500 cfs on basis of slope-area determination of peak 

flow; minimum, 0.5 cfs Oct. 1.

1911-13, 1915-56: Maximum discharge, that of Dec. 23, 1955; no flow at times in 

some years.

Remarks.--Records good except those above 400 cfs, which are fair. Diversions for irrigation of about 160 acres above station. Diversions into Fresno River basin above 

station up to 50 cfs at times since 1897 from San Joaquin River basin and up to 50 cfs 

at times since about 1888 from Merced River basin, for irrigation downstream from 

station.

Cooperation. One discharge measurement furnished by California Department of Water Resources.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 25 Jan. 25 to Sept. 30

1.0

1.1

1.2

1.3

1.4

1.5

1.6

0.3

1.0

3.0

6.5

12

21

35

53

75

1.8 

2.O 

2.5 

3.0 

4.O 

5.O 

6.O 

7.5 

9.0

134

2O4

414

675

1,330

2,180

3,240

5,400

7,960

1.0

1.1

1.2

1.3

1.4

2.7

5.9

12

24

43

1.6 

2.0 

3.0 

4.0 

5.0

95

218

590

1,12O

2,040

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

*0.6

.7

1.0

2.4

2.4

2.6

2.8

2.6

2.4

2.6

2.6

2.8

3.0

2.8

2.6

2.4

2.6

3.0

3.0

3.7

4 8

4?If

4.4

4.8

4.4

3.7

3.4

3.7

4.O 

4.0

4.0

94.6

3.05

188

Nov.

3.7

4.O

5.1

4.8

4.4

4.0

3.7

4.4

4.4

4,0

4.4

4.4

6.5

13

8.2

9.8

17

*15

13

16

31

40

16

15

13

13

13

15

16 

16

337.8

11.3

670

Dec.

36

53

28

21

20

62

94

*42

83

71

46

37

35

34

32

31

28

31

94

179

141

1,090

*7.610

3,760

1,510

*1,120

1,220

560

386 

299

443

19,196

619

38,07j>

Jan.

303

250

215

193

197

*2O8

172

208

165

151

144

137

131

148

305

482

238

*190

179

200

2O4

209

1,160

645

2.300

1,510

*1,520

725

542

451

387

13,869

447

27,510

Feb.

340

311

286

269

255

*238

221

208

2O5

199

192

186

ISO

176

*170

160

151

157

151

142

136

134

445

256

202

215

186

173

160

6,104

210

12,110

Mar.

157

15T

151

145

139

*136

127

124

124

124

124

118

115

115

110

107

107

104

101

101

104

101

98

95

90

90

90

87

64 

82

82

3,483

112

6,910

Apr.

95

92

90

84

82

76

73

73

73

82

118

221

176

157

136

133 *136

145

133

124

118

112

107

101

98

173

347

205

154 

136

3,850

128

7,640

May

121

115

110

245

180

133

164

148

266

208

202

196

164

139

127

118

112

112

104

104

107

101 »I6T

121

118

112

112

110

107

112

112

4,284

138

8,500

June

110

TTo

107

104

104

101

101

98

95

92

92

92

92

92

90

87

87

82

79

76

76

73

68

60

60

58

56

53

48 

43

2,486

82.9

4,930

July

41 *4T

41

39

36

34

34

3E

32

31

29

27

27

26

24

24

23

17

15

14

14

13

12

11

9.6

9.6

9.6

9.6

H9.0

702.4

22.7

1,390

Aug.

771

6.9

6.9

6.9

*7.4

7.4

6.9

6.4

5.9

5.5

5.5

5.1

5.1

4.8

4.8

4.8

4.8

4.8

4,4

4.4

4.8

6.4

ifr

4.1

4.1

4.1

4.4 

4.4

4.4

168.4

5.43

334

Sept,

4.4

4.1

3.5

3±2.

57?

3.2

3.2

3.4

3.4

3.4

*3.5

3.5

3.8

3.5

3.5

3.2

3.5

3.2

3.2

3.8

4.8

4.8

4.4

4.1

3.8

4.1

5.1

7.9-

127.1

4.24

252

Calendar year 1955: Max 7,610 Mln 0 Mean 89.3 Ac-ft 64,610

Water year 1955-56: Max 7,610 Mln 0.6 Mean 149 Ac-ft 108,500

Peak discharge (base. 590 efs). Dec. 23 (5:30 a.m.) 13,300 cfs (11.52 ft); Dec. 27 (8:30 

1,660 cfs (4.41 ft); Jan. 15 (11:30 p.m.) 778 cfs (3.21 ft); Jan. 23 (11 a.m.) 1,480 cfs (4. 

Jan. 25 (1:30 p.m.) 4,740 cfs (7.09 ft); Feb. 23 (11:30 a.m.) 680 cfs (3.20 ft),

* Discharge measurement made on this day.

27 (8:30 a.m.) 

- ' 19 ft);
SAN JOAQUIN RIVER BASIN 287

Fresno River near Daulton, Calif.

Location. Lat 37°05'50", long 119°53'20", In NW£ sec. 3, T. 10 S., R. 19 E., on left bank 

0.5 mile downstream from Willow Creek and 5.3 miles southeast of Daulton.

Drainage area. 270 sq ml.

Records available. October 1941 to September 1956.

Prior 

1949, at

Sage. Water-stage recorder. Altitude of gage Is 385 ft (from topographic map), 

to Sept. 27, 1946, at site 300 ft downstream and Sept. 27, 1946, to Sept. 28, 

present site, at datum 2.37 ft higher.

Average discharge 15 years, 102 efs (73,840 acre-ft per year); median of yearly mean 

discharges, 80 cfs (57,900 acre-ft per year).

Extremes. Maximum discharge during year, 17,500 cfs Dec. 23 (gage height, 11.64 ft), 

from rating curve extended above 6,400 cfs by logarithmic plotting; no flow Oct. 1-21.

1941-56: Maximum discharge, that of Dec. 23, 1955; no flow at times In 1944-45, 

1947-51, 1954-55.

Remarks. Records fair. No diversions for Irrigation between station near Knowles and 

this station. Some regulation at low flow by mining operations above station. See 

Remarks for station near Knowles.

Cooperation. One discharge measurement furnished by California Department of Water 

Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

*o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.8

1.5 

1.6

2.0

2.2

1.8

1.8

2.0

2.5

2*2

18.9

0.61

37

Nov.

2.7

2.7

2.7

3.3

3.3

3.3

3.1

2^5

2.9

2.9

2.9

2.9

4.0

9.8

11

7.8

12

 16

15

14

19

39

30 

20

16

14

13

13

14

15

317.8

10.6

630

Dec.

23

55

40

24

ii

54

117

 68

61

87

54

37

31

28

25

23

21

20

62

149

171

784

10.400 

7,350

2,850

 1,940

2,360

1,090

734

534

922

30,133

972

59,770

Jan.

630

499

418

362

338

 367

309

392

318

278

260

252

256

439

877

460

362

*318

357

362

330

1,350 

 920

*3.150

1,990

*2,670

1,260

974

825

728

22,287

719

44,210

Feb.

630

570

522

*482

455

428

387

357

338

323

314

295

286

273

*264

252

232

248

228

216

213

206

690 

478

300

338

282

260

240

10,107

349

20,050

Mar.

124

216

213

206

*198

191

178

174

174

171

168

165

155

152

149

141

144

138

132

132

132

127

124 

122

114

110

110

110

102

102

107

4,681

151

9,280

Apr.

114

114

107

102

*98

98

96

90

87

96

127

291

269

232

202

184

 174

174

162

146

138

132

119 

112

110

152

228

195

5,043

168

1O,000

May

168

149

141

321

366

209

 220

240

342

361

286

314

256

224

198

181

168

165

158

149

144

130

 130 

138

141

138

127

127

119

ill

119

6,052

195

12,OOO

June

122

117

114

107

 110

110

105

102

102

100

92

90

9O

90

83

81

79

79

75

72

68

66

65 

63

61

57

54

53

48

...M

2,501

83.4

4,960

July

15

42

 41

39

37

36

35

34

32

29

27

25

24

23

22

20

18

17

16

15

13

12

11 

9.8

9.0

8.2

7.8

7.4

7.O

6.7

£il

675.0

21.8

1,340

Aug.

1*1

5.8

 5.5

5.5

5.5

5.2

5.2

4.9

4.6

4.3

4.0

4.0

3.8

3.6

3.6

3.6

3.6

3.3

3.1

2.9

2.9

2.5

2.2 

2.5

2JD

2.0

2.0

2.0

*2.2

2.5

2.5

113.4

3.66

225

Sept.

2.5

2.2

2.2

lil

1.8

1.8

1.8

1.8

2.0

1.8

2.0

2.9

2.9

3.3

3.1

2.9

2.5

2.7

3.1

3.3

3.6

3.8

3.6 

3.3

3.3

3.6

3.6

4.3

5.2

5.5

88.2

2.94

175

Calendar year 1955 : Max 10,400 Mln o Mean 126 Ac-ft 91,280

Water year 1955-56 : Max 10,400 Mln 0 Mean 224 Ac-ft 162,700

 Dec. 23 (8:30 a.m.) 17,500 cfs 

) 1.190 cfs (3.38 ft); Jan. 16

Peak dls 

2,860 cfs

Jan. 23 (2 . _. __ 

ofs (3.68 ft); Apr. 27 (9 a 

540 ofs (2.98 ft).

* Discharge measurement or observation of no flow made on this day.

seharge (base. 500 cfs}.

(5.00 ft); Dec. 31 (12 m.

2:30 p.m.) 1,800 cfs ,(4.48

11.64 ft); 

3:30 p.m.

Dec. 27 (7 to 11 a.m.) 

1,220 cfs (3.42 ft)5

fs ,(4.48 ft)j Jan. 25 (4 p.m.) 6,520 cfs (7.53 ft); Feb. 23 (4 p.m.) 1,160 

.m.) 714 cfs (3.23 ft);jMay 4 (9 p.m.) 643 cfs (3.14 ft); May 9 (8:30 p.m.)
288 SAN JOAQUIN RIVER BASIN

Chowchilla River at Buchanan dam site, Calif.

Location. Lat 37°13'00", long 119°59'00", in SE^ sec. 22, T. 8 S., R. 18 E., on right 

bank 1.9 miles upstream from Raynor Creek and 4.3 miles west of Raymond.

Drainage area. 238 sq mi.

Records available.--October 1921 to September 1923, October 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 407.30 ft above mean sea level, adjustment 

of 1912 (levels by Merced Irrigation District). October 1921 to September 1923 at 

site 2.5 miles upstream at different datum.

Average discharge. 28 years, 105 cfs (76,020 acre-ft per year); median of yearly mean 

discharges, 76 cfs (55,000 acre-ft per year).

Extremes. Maximum discharge during year, 30,000 cfs Dec. 23 (gage height, 16.50 ft), 

from rating curve extended above 6,000 cfs on basis of slope-area determination at 

gage height 15.06 ft; no flow Oct. 1 to Nov. 25, Aug. 22 to Sept. 30.

1921-23, 1930-56: Maximum discharge, that of Dec. 23, 1955; no flow for part of 

each year except 1937-38, 1940-43.

Remarks.--Records good. No storage or large diversion above station. 

Revisions (water years). WSP 931: 1932(P), 1936-38(P).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

2.3

0

.2

.5

1.2

2.0

3.0

4.4

6.5

9.7

14

35

2.6

3.0

3.5

4.0

5.0

6.0

8.0

10.0

12.0

15.0

62

112

189

304

672

1,190

2,790

5,840

10,700

22,200

Dec. 24 to Sept. 30

1.0

1.1

1.2

1:3

1.4

1.5

1.6

5.0

7.5

15

1.2 

2.0 

3.2

Note. Same as preceding 

table above 3.0 ft.

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

O'0

0

0

0

0

0

0

0

0

0

o

0

o

0

0

0

*0

0

0

0

0

0

0

o

.4

1.5

1.7

1.8

1.9

7.3

0.24

14

Dec.

5.6

23

18

11

8.7

79

130

43

38

44

26

18

15

12

*11

9.7

9.1

8.7

149

379

209

2,450

18^00

8,110

2,450

2,190

2,520

990

659

491

646

40,152.8

1,295

79,640

Jan.

483

387

*324

285

272

285

236

310

260

218

208

197

186

203

419

927

425

*330

293

316

327

293

1,820

868

2., 750

1,880

1,960

1,030

797

672

595

19,536

630

38,750

Feb.

514

464

422

387

364

352

307

285

260

347

240

231

221

210

202

191

180

189

184

169

162

160

173

359

247

282

229

208

191

 8,030

277

15,930

Mar.

182

174

169

164

156

152

144

141

140

*135

132

126

122

120

115

109

108

106

102

99

99

98

94

92

89

86

83

82

80

77

77

3,653

118

7,250

Apr.

89

94

83

77

74

73

70

66

64

64

97

212

197

186

179

156

140

144

130

109

102

92

86

81

*77

120

514

238

166

140

3,920

131

7,780

May

119

107

99

129

177

125

148

167

195

2j40_

186

187

164

141

125

115

108

106

100

94

88

82

76

72

70

64

62

60

57

55

53

3,571

115

7,080

June

52

50

47

43

*42

July

10

To

*10

9.8

10

41| 9.8

38

36

34

32

30

29

27

26

27

29

26

24

22

22

22

21

19

17

16

15

15

16

12

11

841

28.0

1,670

9.2

8.5

8.2

7.5

7.2

6.8

6.8

6.2

6.2

6.0

5.8

5.5

4.6

4.5

3.9

3.6

3.0

2.7

2.1

1.8

1.6

1.4

1*2

1.1

-s_i

175.9

5.67

349

Aug.

0.8

[7

,7

.7

.7

*.7

.7

.7

,7

.7

.6

.5

.4

.4

.3

.2

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

10.0

0.32

20

Sept.

0

0

0

Calendar year 1955: Max 18,4OO Mln 0 Mean 132 Ao-ft 95,710

Water year 1955-56: Max 18,4OO Mln 0 Mean 218 Ao-ft 158,500

Peak discharge (base. 770 cfs). De 

fs (8.90 ft); Dec. 31 (11 a.m.) 831 

(5:30 a.m.) 2,62O cfs (7.84 ft); Jan. 25 

(5.73 ft).

* Discharge measurement or observation of no flow made on this day.

23 (6:30 a.m.) 30,OOO cfs (16.50 ft)j Dec. 26 (7 p.m.) 3,960 

5.34 ft); Jan. 16 (2 a.m.) 1,56O cfs (6.56 ft)j Jan. 23 

2 p.m.) 5,340 cfs (9.72 ft); Feb. 23 (l p.m.) 1,030 cfs
SAN JOAQUIN RIVER BASIN 289

Salt Slough near Los Banos, Calif.

Location. Lat 37 0 09'35", long 120°48'45", on left bank In Sanjon de Santa Rita Grant at 

San Luls Ranch, 7 miles north of Los Banos, Merced County.

Records available. December 1940 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 70.60 ft above mean sea level (levels by 

Bureau of Reclamation).

Average discharge. 15 years (1941-56), 215 cfs (155,700 acre-ft per year).

Extremes. Maximum dally discharge during year, 620 cfs Jan. 30 (gage height, 6.60 ft); 

minimum, 25 cfs Nov. 9.

1941-56: Maximum dally discharge, 2,420 cfs Mar. 9, 1941; minimum, 8.5 cfs Sept. 8, 

1950.

Remarks. Records good. Flow regulated by Irrigation operations above station. Salt 

Slough Is a continuation of Pick Anderson Slough system.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1-12, May 30 to June 25)

2.0 

2.5 

3.0

4.0 

5.0 

6.6

183

310

620

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

£1

ZZ

33

24

£5

£6

£7

£8

£9

30

31

Tota:

Mean

Ac- ft

Oct.

69

65

66

64

63

60

*59

57

55

53

52

51

48

47

46

46

47

44

44

43

4£

40

40

38

34

34

34

34

34

32

34

1,475

47.6

2,930

Nov.

35

3£

3£

3£

34

34

34

34

32

34

36

38

38

38

*38

38

38

38

37

36

37

36

36

36

36

34

34

33

33

33

1,056

35.2

2,090

Dec.

34

36

36

36

36

35

36

36

38

40

40

41

*40

42

49

49

43

42

42

39

38

4O

57

101

135

153

407

454

*503

521

519

3,718

120

7,370

Jan.

498

496

496

486

*498

523

500

496

498

496

494

490

480

476

476

484

484

494

494

506

525

514

512

506

525

556

578

596

611

"618 620

16,026

517

31,790

Feb.

600

555

572

558

545

536

525

521

519

517

514

510

506

500

492

484

476

444

334

£88

374

426

438

448

*438

434

419

403

381

13,787

475

27,350

Mar.

372

3*5

2.58

196

170

168

162

153

156

146

131

*122

118

126

141

141

161

155

161

170

170

180

158

149

150

146

141

139

139

143

150

5,217

168

10,350

Apr.

150

139

130

1£6

138

139

141

138

135

132

138

14O

138

*131

131

128

119

112

105

91

88

92

101

102

105

108

125

175

184

160

3,841

128

7,620

May

139

137

130

105

104

97

97

98

97

93

*91

85

85

82

15

75

85

89

93

94

99

96

93

101

104

101

122

166

£05

£16

226

3,480

11£

6,900

June

245

255

£56

258

£48

"£59 £59

232

£O6

205

*201

196

18O

137

128

134

13O

1£6

111

1O9

111

111

111

101

112

120

116

118

114

108

4,997

167

9,910

July

107

112

116

1£8

*1£1

119

112

106

106

105

103

101

98

98

101

104

109

111

105

105

101

1O4

10£

115

104

104

108

1£0

112

114

1£2

3,373

109

6,690

Aug.

108

101

105

114

120

*110

110

106

101

97

99

106

105

100

98

101

106

115

110

109

107

101

96

104

109

ioi

103

101

101

105

112

3, £61

105

6,470

Sept.

109

1O9

101

89

88

101

97

102

96

87

84

89

89

86

93

99

98

*97

95

100

84

84

81

84

85

84

89

95

97

99

2,791

93.0

5,540

Calendar year 1955: Max 521 Min 32 Mean 89.6 Ao-ft 64,870

Water year 1955-56: Max 620 Min 32 Mean 172 Ac-ft 125,000

Discharge measurement made on this day.
290 SAN JOAQUIN RIVER BASIN

San Joaquin River at Premont Ford Bridge, Calif.

Location. Lat 37°18'35", long 120°55'45", in Orestimba Grant, on left bank 150 ft downstream from Premont Ford Bridge, Merced County, 2.1 miles downstream from Salt Slough, 

4.5 miles west of Stevinson, and 6.7 miles upstream from Merced River.

Drainage area. 8,090 sq mi, approximately.

Records available. October 1944 to September 1956 in reports of Geological Survey.. February 1937 to September 1956 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Datum of gage is 3.73 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to Dec. 8, 1949, on downstream side of Premont Ford 

Bridge near left bank.

Average discharge. 12 years (1944-56), 662 cfs (479,300 acre-ft per year).

Extremes. Maximum discharge during year, 4,420 cfs Jan, 30; maximum gage height, 69.86 

ft Dec. 29 (backwater from Merced River); minimum discharge, 24 cfs Oct. 30.

1944-56: '"Maximum discharge, 4,470 cfs Mar. 25, 1952; maximum gage height, that of 

Dec. 29, 1955; minimum discharge, 18 cfs Oct. 18, 1949.

Remarks. Record good. Natural flow of stream affected by storage reservoirs, groundwater withdrawals, diversions for irrigation, and imported water from Delta-Mendota 

Canal (see p.349 ). During periods of high flow, some water bypasses this station 

through Mud Slough; low flows consist mainly of return water from irrigated areas. See 

Remarks for stations upstream. Records of -chemical analyses and water temperatures for 

the water year 1956 are given in WSP 1453.

Cooperation. Seven discharge measurements furnished by California Department of Water 

Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 '

27

28

29 

30

51

Total

Mean

Ac-ft

Oct.

SO 

82

74 

70

68

58 

64

61

57

54

51

*55

45

58

41

44

44

44

45

45

45

42

55

*59

57

*52

51

51

27 

24

29

1,486

47.9

2,950

Nov.

27 

53

31 

31

29

26 

 29

28

28

54

58

43

43

56

57

55

58

59

60

66

65

64

*61

60

58

58

57

56

49 

44

1,423

47.4

2,820

Dec.

44 

4O

44 

45

45

38 

40

49

55

51

52

76

*74

48

45

46

68

65

SO

49

45

45

95

*904

2,500

*5,490

4,240

4,530

4.590 

4,560

*4,560

29,777

961

59,060

Jan.

4,520 

4,250

4,320 

4,250

*4,250

4,270 

4,270

4,230

*4,160

4,090

4,050

4,020

4,000

5,970

5,940

5,950

5,95O

*4,040

4,080

4,090

4,040

5,990

5,940

5,950

*4,050

4,170

4,190

4,220

4,390 

4_.41Q

4,360

128,170

4,135

254,200

Feb.

4,510 

4,290

4,500 

4,200

4,150

4,060 

4,040

4,020

5,990

5,990

5,980

5,970

5,960

*5,940

3,920

3,900

3,840

5,810

5,760

5,650

5.590

3,600

5,660

*5,710

5,780

3,800

3,810

3,790

5,740

115,540

5,915

225,200

Mar.

5.690 

3,630

3,480 

5,250

2,900

2,560 

2,500

2,070

1,910

1,820

1,760

*1,690

1,560

1,410

1,260

1,05O

852

705

6O1

*570

558

505

48O

470

452

425

409

591

572 

558

565

43,811

1,415

86,900

Apr.

409 

T72

550 

550

525

528 

515

525

518

518

528

657

765

*817

892

945

949

904

847

781

675

552

485

488

460

411

490

915

1,100 

1.160

19,845

661

59,560

May

1,070 

*971

881 

815

728

764 

794

776

712

695

*758

798

825

796

686

556

474

527

527

569

576

616

685

803

*995

1,180

1,320

*1,480

1,630 

1,850

1.950

27,767

896

55,080

June

2,010 

2,060

2,120 

2,150

2,180

2,180

2J05O

1,680

1,480

*1,410

1,580

1,550

1,290

1,150

895

692

551

454

556

514

285

274

273

265

255

252

237

223 

206

32,180

1,073

63,850

July

2O2 

2O6

217 

240

*256

254 

278

270

263

280

294

169

267

254

258

252

254

242

247

245

225

225

222

209

215

194

178

186

197 

191

181

7,247

254

14,370

Aug.

204 

170

m194

*220 

200

215

207

188

173

166

178

166

180

2O2

215

213

222

215

216

256

224

192

199

196

192

191

185 

173

183

6,033

195

11,970

Sept.

196 

196

215 

229

206

m199

2OO

229

270

274

286

*267

252

225

254

258

282

520

520

298

506

290

278

260

225

207

199 

199

7,293

243

14,470

Calendar year 1955: Max 4,590 \ Mln 24 Mean 245 Ac-ft 177,100

Water year 1955-56: Max 4,410 Mln 24 Mean 1,144 Ac-ft 850,200

» Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 291

Merced River at Happy.Isles Bridge, near-Yosemlte, Calif.

Location. Lat 37°43'54", long 119°33'28", on right bank 10 ft downstream from Happy Isles 

Bridge, 0.4 mile downstream from Illllouette Creek, and 2.0 miles southeast of Yosemlte 

National Park Headquarters, Marlposa County.

Drainage area. 181 sq ml.

Records available. August 1915 to September 1956.

gage. Water-stage recorder. Datum of gage Is 4,016.58 ft above mean sea level, datum of 

1929. Prior to Nov. 2, 1916, staff gage at datum 0.55 ft lower.

Average discharge. 41 years, 343 cfs (248,300 acre-ft per year).

Extremes.--Maximum discharge during year, 9,860 cfs Dec. 23 (gage height, 12.73 ft), from 

rating curve extended above 4,000 cfs on basis of contracted-opening determinations at 

gage heights 10.4 and 11.55 ft; minimum, 1.9 cfs Oct.- 12.

1915-56: Maximum discharge, that of Dec. 23, 1955; minimum, 1.5 cfs Sept. 30, 1926.

Remarks.--Records good below 4,000 cfs and fair above, 

for Yosemlte Valley water supply.

Revisions (water years).--WSP 1215: 1938(M).

About 1 cfs diverted above station

Rating tables, water year 1955-56 (gage height. In feet, and discharge, In cubic 

feet per second)

Oct. 1 to Dee. 23 Dec. 23 to Feb. 29 Mar. 1 to Sept. 30

1.2

1.3

1.4

1.5 

1.7 

1.9 

2.1 

2.4 

2.7

1.4 

2.3

70

120

3.0 

3.5 

4.0 

5.0 

6.0 

7.0 

8.0 

10.0

186

338

545

1,070

1,870

2,980

4,640

7,940

2.5 

3.0 

3.5 

4.0

144

224

355

545

Note. Same as 

preceding table 

above 4.O ft.

1.6 

2.0 

2.5 

3.0 

3.5 

4.0 

5.0 

6.0 

7.0 

8.0

36

75

144

252

402

600

1,150

1,910

2,980

4,640

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.4

3.3

3.1

3.1

2.9

2.7

2.6

2.6

2.4

2.4

2.6

2.4

2.3

2.4

2.3

2.4

*2.4

2.4

2.6 

2.6

2.6 

2.4

2.4

2.6

2.6

2.6

2.4

2.6 

2.4

80.1

2.58

159

Nov.

2.6

2.3

2.4

2.4

2.4

2.4

2.3

2.3

2.3

2.3

2.3

2,2.

2.4

3.0

3.9

*4.6

5.3

8.0

11

14

33 

20

16 

15

16

16

18

20

20

19

273.4

9.11

542

Dec.

21

26

24

24

28

66

60

52

97

70

64

66

63

62

62

56

54

52

64

85

96 

2,690

7.480 

2,350

1,240

1,070

808

*604

495

452

411

18,792

606

37,270

Jan.

372

329

315

306

303

298

290

277

267

262

259

264

257

274

449

575

425

352

*317

312

306 

329

349 

309

320

326

320

320

309

301 

285

9,977

322

19,790

Feb.

259 255"

245

243

237

224

219

204

181

*181

181

*186

186

184

178

173

176

170

161

161

155 

155

161 

160

154

155

150

145

147

5,386

186

10,680

Mar.

142

148

155

158

158

149

149

155

170

182

191

189

195

200

204

233

268

292

306

306

*336 

368

434 

535

578

564

539

543

604

640 "6T8"

9,709

313

19,260

Apr.

527

431

382

362

395

487

586

655

762

789

645

560

495

445

420

424

449

483

535

636

750 

838

1,040 

*1,130

1.160

1,070

855

730

720

772

19,533

651

38,740

May

860

1,020

1,260

1,480

1,230

1,020

922

811

822

735

725

655

591

591

735

982

1,160

1,240

1,460

1,400

2,000 

2,720

5.050 

*2,910

2,310

2,500

2,540

2,270

2,430

2,530 

2,440

47,399

1,529

94,010

June

2,190

2,340

2,380

2,380

2,090

1,960

2,180

2,340

2,480

*2 . 610

2,610

2,480

2,470

2,240

1,750

1.560

1,710

1,980

2,180

1,910

1,780 

1,950

2,070 

2,140

1,970

1,980

2,240

2,330

2,330

1,900

64,530

2,151

128,000

July

1,590

1,400

1,170

1,140

1,130

1,130

1,170

1,230

1,230

1,100

*934

828

715

645

622

645

655

756

1..390

1,580

1.B40 

1,210

1,450 

1,240

1,790

1,210

1,290

934

756

600 

535

33,915

1,094

67,270

Aug.

483

409

342

306

286

273

270

273

284

281

286

268

228

221

218

211

204

200

195

184

168 

*157

149

151

157

151

136

128

127

122 

117.

6,985

225

13,850

Sept.

115

118

120

115

107

96

91

83

79

75

68

73

71

62

54

49

42

39

40

50

61 

60

54 

48

 46

43

66

114

103

87

2,229

74.3

4,420

Calendar year 1955: Max 7,480 Mln 2.2 Mean 288 Ac-ft 208,200

Water year 1955-56: Max 7,480 Mln 2.2 Mean 598 Ac-ft 434,000

Peak discharge (base, 1,900 efs). Dee. 23 (5i30 a.m.) 9.860 cfs (12.73 ft): May 4 (4:30 a.m.)

1,950 cfs (6.04 ft)} May 24 (12:30 a.m.) 3,520 efs (7.36 ft)j June 11 (2 a.m.) 3,060 efs (7.06 ft)}

June 19 (3 a.m.) 2,560 cfs (6.67 ft); June 29 (3 a.m.) 2,790 cfs (6.86 ft)j July 21 (4 a.m.) 2,530 

efs (6.64 ft)j July 25 (4 a.m.) 2,300 efs (6.42 ft).

* Discharge measurement made on this day.
292 SAN JOAQUIN RIVER BASIN

Tenaya Creek near Yosemite, Calif.

Location. Lat 37°44'32", long 119°33'25", in Yosemite National Park, on left bank at

bridge, 0.7 mile upstream from mouth and 1.7 miles east of Yosemite National Park Headquarters, Mariposa County.

Drainage area.--47 sq mi, approximately.

Records available.--July 1904 to June 1909, January 1912 to September 1956.

;e. Water-stage recorder. Altitude of gage is 4,000 ft (from topographic map). Prior 

To Feb. 4, 1913, staff gages at several sites on bridge at various daturns. Feb. 4, 

1913, to Sept. 14, 1918, staff gage at present site and datum.

Average discharge. 43 years (1913-56), 106 cfs (76,740 acre-ft per year).

Extremes. Maximum discharge during year, 4,730 cfs Dec. 23 (gage height, 8.14 ft), from 

rating curve extended above 1,000 cfs on basis of contracted-opening determination at 

gage height 8.44 ft, revised; minimum, 0.9 cfs on many days in October and November.

1904-9, 1912-56: Maximum discharge, 6,800 cfs (revised) Dec. 11, 1937 (gage height, 

10.00 ft), from rating curve extended above 2,000 cfs as explained above; minimum, 

0.6 cfs Dec. 18-22, 1929, Dec. 2, 6-15, 1940.

Revisions. Figures of maximum discharge for the water years 1938 and 1951 have been 

revised to 6,800 cfs Dec. 11, 1937 (gage height, 10.00 ft) and 5,150 cfs Nov. 18, 1950 

(gage height, 8.44 ft, revised), superseding those published in WSP 861 and 1215, 

respectively.

Remarks.--Records good above 50 cfs and fair below. No storage or diversion.

Revisions (water years). WSP 861: 1937. WSP 881: 1938. Revised figures of discharge, 

in cubic feet per second, for the water years 1914-15, 1951, superseding those published 

in WSP 391, 411, and 1215, are given herewith:

Date

1914

Apr. 1

2

1915

July 31

Aug. 1

2

Discharge

78

54

22

22

22

Date

1915-Con.

Aug. 11

12

13

14

15

16

17

Discharge

7.5

7.0

6.5

6.0

5.5

5.0

4.5

Date

1950

Nov. 18

19

20

21

Discharge

1,860

2,580

2,020

1,870

Month

Calendar year 1914. ...........

July 1915.......................

Water year 1950-51 ............

Cfs-days

11,314

Maximum

1,010

260

22

1,100

2,580

2,580

2,580

Minimum.

54

3.2

2.1

22

2.4

.9

.9

10

.9

.9

Mean

233

160

159

115

118

118

377

156

143

Runoff in 

acre-feet

115,000

431

85,400

22,440

113,100

103,600

Revised peak discharge. 1950-51;Nov. 18 (12 p.m.) 5,150 cfs (8.44 ft)j 

(11 p.m.) 3,230 cfs (7.16 ft).
SAN JOAQUIN RIVER BASIN 293

Tenaya Creek near Yosemite, Calif . Continued

Rating tables, water year 1955-56 (gage height, In feet, and discharge, in cubic

feet>per second) 

(Shifting-control method used Oct. 22 to Dec. 22)

Oct. 1 to Dec. 22 Dec. 23 to May 22 May 23 to Sept. 30

.9 

1.0 

1.2

0.3

1.9

5.8

13

37

1.5 

2.0 

3.0 

4.0 

5.0

82

186

518

935

1,470

0.8 

1.0 

1.5 

2.0 

3.0

53

72

133

225

500

4.0 

5.0 

6.0 

7.0

900

1,470

2,260

3,280

-0.3

-.2

-.1

0.0

.2

.5

0.6

2.0

5.0

9.5

22

49

1.0 

2.0 

3.0 

4.0 

5.0

Discharge, In cubic feet per second, water year October 1955 to September 1956

107

266

520

900

1,470

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.5

1.3

1.5

1.5

1.5

1.1

1.3

1.1

1.1

1.1

1.1

1.3

1.1

1.1

1.3

1.3

1.1

1.3

 1.1

1.1

1.3

1.1

1.1 

1.1

1.1

1.1

1.1

1.1

.9

.9

1.3

36.9

1.19

73

Nov.

1.3

1.1

1.1

1.1

1.1

-|

.9

1.1

.9

.9

.9

1.1

.9

1.1

*.9

.9

1.1

1.1

1.3

1.5

1.7

1.3

1.3 

1.3

1.5

1.5

1.5

1.5

1.5

1.5

35.8

1.19

71

Dec.

2.2

3.1

3.4

3.8

3.8

9.4

8.2

7.6

19

14

10

9.4

9.4

8.2

7.6

6.4

6.4

5.8

10

20

37

995

2.860 

1,190

646

491

348

*265

205

173

155

7,532.7

243

14,940

Jan.

 146

130

119

111

105

101

97

94

89

86

89

89

89

98

216

282

193

*154

133

123

112

119

135 

120

112

130

98

136

111

100

91

3,808

123

7,550

Feb.

85

82

80

79

78

74

72

70

*66

65

64

68

67

67

64

61

59

58

58

58

58

57

59 

60

61

61

60

58

58

1,907

65.8

3,780

Mar.

56

58

59

60

 59

56

57

58

60

63

67

64

66

68

70

76

83

97

101

104

116

*127

151 

197

213

213

195

199

223 237'

223

3,476

112

6,890

Apr.

181

149

129

119

130

171

221

250

300

308

239

207

175

155

147

155

159

191

225

290

338

387

472 

*528 504"

453

348

290

278

290

7,789

260

15,450

May

328

393

524

892

496

396

351

290

302

250

258

217

193

203

280

381

423

462

549

625

940

1,180

*1.200 

1,060

955

970

940

855

878

920

896

18,607

600

36,910

June

842

860

905

900

762

686

730

778

802

*832

819

782

730

680

544

490

502

544

554

499

469

469

466 

448

402

394

389

379

352

306

18,315

610

36,330

July

262

230

203

186

171

159

150

146

136

127

114

*100

88

78

71

64

61

93

166

138

108

97

135

165

176

186

200

147

107

82

64

4,210

136

8,350

Aug.

53

50

42

36

32

28

25

23

21

20

18

17

15

14

13

12

11

10

9

8

7

*6.5

5.9 

5.4

5.0

4.4

4.1

4.1

3.8

3.5

3.5

510.2

16.5

1,010

Sept.

2.9

2.9

2.9

2.3

2.0

2.0

2.3

2.0

2.0

2.3

2.0

2.0

2.0

2.0

1.9

1.7

1.7

1.9

1.7

1.7

1.7

1.6

1.7 

*1.7

1.6

1.6

1.7

^2

2.0

2.0

61.0

2.03

121

Calendar year 1955: Max 2,860 Min 0.9 Mean 89.7 Ac-ft 64,970

Water year 1955-55: Max 2,860 Min 0.9 Mean 1S1 Ac-ft 131,500

Peak discharge (base, 490 cfs).--Dec. 23 (4 a.m.) 4,730 cfs (8.14 ft); Dec. 26 (11:30 a.m.) 584 cfs 

(3.24 ft); Apr. 24 (10 p.m.) 637 cfs (3.46 ft); May 4 (4:30 a.m.) 1,150 cfs (4.49 ft); May 23 

(12:30 a.m.) 1,540 cfs (5.10 -ft); June 3 (8:30 p.m.) 1,210 cfs (4.59 ft); June 10 (8:30 p.m.) 1,110 

cfs (4.41 ft); June 18 (9 p.m.) 718 cfs (3.57 ft).

* Discharge measurement made on this day.

Note. No gage-height record Aug. 8-22; discharge estimated on basis of normal recession, 1 discharge measurement, and records for nearby streams.

493801 O - 59 - ZO
294 SAN JOAQUIN RIVER BASIN 

Merced River at Pohono Bridge, near Yosemite, Calif.

Location. Lat 37°43'01", long 119°39'55", on left bank 150 ft upstream from Pohono 

Bridge, 0.4 mile upstream from Artist Creek, and 4.8 miles southwest of Yosemite 

National Park Headquarters, Mariposa County.

Drainage area. 321 sq mi.

Records available. November 1916 to September 1956.

flage. Water-stage recorder. Datum of gage is 3,861.66 ft above mean sea level, datum of

 1929. Prior to Sept. 5, 1918, at datum 1.8 ft higher and Sept. 5, 1918, to Sept. 30, 

1955, at datum 1.0 ft higher.

Average discharge.--39 years (1917-56), 598 cfs (432,900 acre-ft per year).

Extremes. Maximum discharge during year, 23,400 cfs Dec. 23 (gage height, 21.52 ft, from 

floodmark in gage well), from rating curve extended above 6,800 cfs on basis of computation of flow over diversion dam for Yosemite powerhouse 1 mile downstream at gage 

heights 20.1 and 20.98 ft, present datum; minimum daily, 13 cfs several days in October and November.

1916-56: Maximum discharge, that of Dec. 23, 1955; minimum, 3.3 cfs Sept. 29, 

Oct. 1, 1924.

Remarks.--Records good except those for period of no gage-height record, which are fair.

 No~3iversions between stations at Happy Isles Bridge and Pohono Bridge. About 1 cfs 

sewage effluent returns between stations. See Remarks for Merced River at Happy Isles 

Bridge, near Yosemite.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

1.1

1.2 

1.5 

2.0 

2.5 

3.0

12

14

27

65

126

228

4.0 

5.0 

6.0 

8.0 

10.0

510

970

1,590

3,360

5,800

1.8 

2.0 

2.5 

3.0 

4.0 

5.0

52

71

137

238

520

1,030

7.0

9.0

11.0

14.0

17.0

2,520

4,580

7,600

14,400

19,200

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14 

15

16 

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

S±5

gl5

g!5 

g!4

g!4

g!5

14

14

14

14

14

14

14

13 

TI

13 

13

14

*14

14

14

14

14 

14

14

14

14

14

14

14

14

435

14.0

863

Nov.

14

14

14 

14

14

14

13

IT

14

13

13

14

15

17 

16

*17 

21

20

23

29

60

35

39 

36

36

36

36

38

43

42

738

24.6

1,460

Dec.

54

S8

58 

56

60

126

142

120

217

180

154

150

144

137 

137

130 

122

123

172

208

265

4,960

alS.OOO 

a5,366

a2,700

a2,300

al,700

1,360

*1,080

959

926

42,098

1,358

83,500

Jan.

871

783

720 

675

660

628

596

578

556

544

548

564

548

589 

1,060

1.630 

1,120

937

*816

766

715

761

994 

756

827

882

761

700

610

596

560

23,371

754

46,360

Feb.

513

513

516 

524

BTJB"

485

468

460

*441

441

444

450

454

450 

426

392 

409

392

37S

395

384

384

414 

395

372

384

359 3~64

367

------

12,480

430

24,750

Mar.

351

36T

372 

378

381

351

351

367

386

406

423

412

423

435 

435

435 

564

614

655

650

*725

788

915 

1,120

1,220

1,210

1,110

1,140

1,280

1,360

I 3(D<3

20,968

676

41,590

Apr.

1,060

876

788 

761

84?

1,050

1,270

1,430

1,670

1,750

1,370

1,180

1,040

942 

888

920 

954

1,070

1,200

1,450

1,670

1,840

*2,250 

2,470

2.530

2,330

1,880

1,610

1,590

1,690

42,398

1,413

84,100

May

1,860

2,150

2,640 

4,230

2,810

2,280

2,050

1,760

1,780

1,600

1,610

1,450

1,310

1.300 

1,616

2,100 

2,360

2,520

2,920

2,880

4,020

5,180

 *5.740 

5,526

4,560

4,750

4,750

4,220

4,360

4,560

4,450

95,330

3,075

189,100

June

4,030

4,170

4,300 

4,300

3,740

3,380

3,670

3,900

4,080

*4,220

4,210

3,960

3,920

3,580 

2,910

2,550 

2,660

3,000

3,300

2,930

2,680

2,850

2,970 

3,030

2,810

2,730

3,000

3,040

3,080

2.540

101,540

3,385

201,400

July

2,130

1,870

1,620 

1,550

1,510

1,480

1,500

1,550

1,550

1,420

*1,250

1,130

1,010

904 

866

882 

871

982

1,570

1,960

2,190

1,480

1,820 

1,560

2,120

1,660

1,780

1,240

1,040

832

710

44,037

1,421

87,350

Aug.

623

55T

450 

403

375

356

346

343

348

346

343

333

291

272 

272

264 

255

245

238

231

214

196

*190 

186

190

188

174

163

159

155 

146

8,819

284

17,490

Sept.

141

144

l*T

141

134

124

117

110

103

100

92

93

93

88 

78

71 

65

62

6066"

76

79

73 

68

*64

62

70

118

123

108

2,867

95.6

5,690

Calendar year 1955: Max 18,000 Mln 13 Mean 517 Ac-ft 374,200

Water year 1955-56: Max 18,000 Mln 13 Mean 1,079 Ac-ft 783,700

Peak discharge (base. 2.900 efs) . Dec. 23 (about 6 a.m.) 23,400 cfs (21.52 ft); May 4 (6:30 a.m.) 

4,890 cfs (9.25 ft); May 23 (12:30 a.m.) 6,470 cfs (10.33 ft)j June 11 (2 a.m.) 4,770 cfs (9.16 ft)j 

June 19 (3 a.m.) 3,590 cfs (8.13 ft); June 29 (5 a.m.) 3,480 cfs (6.02 ft).

* Discharge measurement made on this day.

a Ho gage-height recordj discharge estimated on basis of records for station at Happy Isles Bridge 

and Tenaya Creek near Yosemite.

g Computed from twice-daily staff-gage readings.
SAN JOAQUIN RIVER BASIN 295

South Pork Merced River near El Portal, Calif.

Location. Lat 37°39'05" > long 119°S3'05", in NWiNEi sec. 29, T. 3 S., R. 19 E., on right 

bank 1,400 ft upstream from mouth and 6.2 miles west of El Portal.

Drainage area. 239 sq mi.

Records available November 1950 to September 1956.

Gage. water-stage recorder. Altitude of gage is 1,400 ft (from topographic map).

Average discharge.--5 years (1951-56), 388 cfs (280,900 acre-ft per year).

Extremes. Maximum discharge during year, 46,500 cfs Dec. 23 (gage height, 18.70 ft), from 

rating curve extended above 2,700 cfs on basis of slope-area determination at gage 

height 17.63 ft; minimum, 7.8 cfs Oct. 15.

1950-56: Maximum discharge, that of Dec. 23, 1955; minimum, 5.4 cfs Sept. 14, 15, 

16, 1955.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Big Creek ditch diverts up to 50 cfs at times into Presno River basin. Diversion of 

0.5 cfs at Wawona for domestic use and irrigation of golf course.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Dot. 1 to Dec. 23 Dec. 23 to Sept. 3O

3.0 

3.2 

3.4 

3.7 

4.0 

4.5 

5.0 

6.0

6.0

14

26

53

89 

175 

313 

7OO

7.0

8.0

9.0

10.0

12.0

14.0

16.0

17.0

1,250

2,000

3,O20

4,5OO

9,000

15,700

26,200

32,900

4.0 

4.2 

4.5

6.0 

6.5

17

32

61

127

232

370

545

7.0

8.0

9.0

1O.O

12.0

13.0

790 

1,470 

2,360 

3.6OO 

7,500 

10,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

9/2

9.2

8.8 

8.4

8.4

8.4

8.4

8.8

8.4

8.4

8.4

8.8

8.8

8.8

8.1

8.4

8.4

*8.8

9.5

10

11

11

12

II

11

11 

10

11

11

11

11

295.4

9.53

586

NOV.

11

TT

11

12

12

12

12

12

12

12

12

12

13

21

19

20

*28

26

22

26

80

66

38 

32

26

24 

24

25

27

27

685

22.8

1,360

Dec.

67

96

53 

39

34

171

188

89

217

154

102

84

76

71

65

63

58

56

334

569

375

3,540

29,400 

16,266

4,010

3,920 

3,940

1,710

1,240

984

899

62,804

2,026

124,600

Jan.

779

*695

626

581

563

550

509

529

494

470

*477

491

474

521

1,120

1,770

991

*768

665

635

626

661

1,960 

1,210

2,300

S'S26

1,400

1,040

893

779

29,337

946

58,190

Feb.

695 635"

594 

572

550

521

494

*477

452

438

432

428

422

418

399

380

376

373

364

355

350

555

620 

480

440

420 

410

400

39O

13,235

456

26,250

Mar.

370

370

370 

370

370

350

340

3TO

340

350

36O

350

360

360

360

370

400

430

460

450

470

49O

517 

599

645

630 

594

594

650

690

SAB

14,034

453

27,840

Apr.

581

494

460 

442 478-

525

635

705

806

875

695

622

554

513

502

572

576

626

660

746

818

818

*1,030 

1,13O

1,220

1.540 

1,070

917

887

935

22,200

740

44,030

May

972

1,080

1,270 

2,650

1,680

1,250

1,200

1,030

1,2OO

1,060

1,090

1,010

881

828

TSFr

1,140

1,270

1,330

1,670

1,420

2,250

2,780

2,750 

*2,44O

2,O5O

2,220 

2,090

1,800

1,880

1,940

1,840

48,988

1,580

97,170

June

1,710

1,800

1.84O 

1,766

1,500

1,370

1,540

1,610

1,650

1,650

1,550

1,450

1,38O

1,20O

972

917

947

1,030

1,040

863

*790

845

840 

801

695

685 

710

695

608

494

34,942

1,165

69,310

July

428

386

340 

334

316

299

288

282

269

237

210

*188

176

159

153

147

143

151

164

238

22~8 644

234 

269

218

165 

246

151

136

114

107

7,420

239

14,720

Aug.

iS5-

T5T

87

so

78

74

71

70

66

66

63

61

56

52

51

49

48

47

45

44

42

39

*39 

39

38

38 

37

36

35

35

54

1,719

55.5

3,410

Sept.

32

30

30 

28

27

?6

26

26

26

27

26

26

26

26

25

24

24

23

?3

24

26

27

26 

25

*23

23 

23

27

35

3<J

790

26.3

1,570

Calendar year 1955: Max 29,400 Min 5.7 Mean 361 Ac-ft 261,600

Water year 1955-56: Max 29,400 Min 8.1 Mean 646 Ao-ft 469, OOO

July 20 (12 p.m.) 2',31O cfs (8.95 ft).

* Discharge measurement made on this day.

Note. No gage-height record Feb. 21 to Mar. 22; discharge estlaated on basis of records for 

Merced River at Bagby and high^water mark for peak of Feb. 23,
296 SAM JOAQUIN' RIVER BASIN

Merced River at Bagby, Calif.

Location. Lat 37°36'40", long 120°07'50", in SE£ sec. 6, T. 4 S., R. 17 E., on left bank 

800 ft upstream from highway bridge at Bagby and 0.3 mile upstream from Flyaway Gulch.

Drainage area. 912 sq mi.

Records available.--November 1922 to September 1956. Published as "at Horseshoe Bend" 

November 1922 to September 1931 and as "at Kittridge" October 1931 to September 1947.

Gage. Water-stage recorder. Datum of gage is 779.52 ft above mean sea level, datum of 

1929. Prior to Nov. 24, 1928, water-stage recorder at site 5.0 miles downstream at 

different datum. Nov. 24, 1928, to Nov. 3, 1947, water-stage recorder at site 3.8 miles 

downstream at different datum. Nov. 4, 1947, to Nov. 19, 1950, water-stage recorder at 

present site and datum. Nov. 20, 1950, to Nov. 4, 1951, wire-weight gage at site 800 ft 

downstream at datum 51.62 ft lower.

Average discharge.--30 years (1923-27, 1929-30, 1931-56), 1,248 cfs (903,500 acre-ft per 

year).

Extremes. Maximum discharge during year, 92,500 cfs Dec. 23 (gage height, 26.80 ft), from 

rating curve extended above 25,000 cfs on basis of change in contents in Lake McClure; 

minimum, 17 cfs Oct. 14.

1922-56: Maximum discharge, that of Dec. 23, 1955; minimum, 13 cfs Oct. 5, 1925, 

site then in use.

Revisions. The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

691 

736 

791 

811 

1121 

1151 

1181

Water 

year

1929 

1932 

1935 

1936 

1948 

1949 

1950

Date

June 16, 1929 

Feb. 6, 1932 

Apr. 8, 1935 

Feb. 23, 1936 

May 27, 1948 

Mar. 3, 1949 

Feb. 4, 1950

Discharge 

(cfs)

9,380 

18,300 

31,700 

16,900 

7,970 

8,960 

7,710

Gage height 

(feet)

11.65 

16.0 

21.5 

15.38 

7.13 

7.54 

7.02

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

No storage or large diversion above station.

Revisions. Revised figures of discharge, in cubic feet per second, for the water years 

1926-27, 1932, and 1936, superseding those published in WSP 631, 651, 736, and 811, are 

given herewith:

Date

1926

Aug. 1

2

3

4

5

6

7

8

9

1011

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Discharge

90

86

87

65

63

78

67

74

73

74

67

66

66

67

67

51

71

49

60

60

50

51

52

57

51

60

50

54

Date

1926-Con.

Aug. 29

30

31

Sept. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

Discharge

54

53

53

51

53

52

52

53

51

50

49

48

47

45

39

40

42

42

44

45

46

45

45

46

46

66

60

47

Date

1926-Con.

Sept. 2 6

27

28

29

30

Oct. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Discharge

46

44

44

45

44

44

47

34

36

47

72

37

62

37

67

35

74

36

75

60

37

63

54

53

56

54

55

62

Date

1926-Con.

Oct. 24

25

26

27

28

29

30

31

1931

Dec. 25

28

1932

Feb. 6

7

8

9

1936

Feb. 2

12

13

14

16

22

23

Discharge

59

60

60

56

58

52

58

58

6,540

12,000

10,400

8,600

7,700

7,080

7,830

8,000

7,720

9,980

6,640

8,120

12,800

Month

Water year 1925-26. ............

Water year 1926-27. ............

Calendar year 1931. ............

Water year 1931-32 .............

Water year 1935-36. ............

Maximum

5,210

8,330

12 , 000

12,000

12 , 800

Minimum

39

-

18

50

49

Mean

798

1,440

427

1,470

1,525

Runoff in 

acre-feet

578,000

1,040,000

309,000

1,060,000

1,100,000

1,107,000
SAN JOAQUIN RIVER BASIN 297

Merced River at Bagby, Calif. Continued

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic 

feet per second)

Oct. 1 to Dec. 23 Dec. 24 to May 3 May 4 to Sept. 30

0.7

.8

1.0

1.3

1.6

2.0

2.5

3.0

18

27

51

107

185

350

640

1,030

4.0

5.0

7.0

10.0

15.0

20.0

23.0

2,120

3,540

7,660

15,500

32,400

54,000

69,000

2.6

3.0 1

4.0 2

6.0 5

8.0 10

900

,240

,420

,900

,300

10.0

15.0

20.0

23.0

15,500

32,400

54,000

69,000

1.1

1.3

1.5

2.0

2.5

96

154

226

475

825

3.0

4.0

5.0

7.0

1,280

2,460

4,260

9,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

29

28

2.7

26 

26

27

26

26

26

25

25

26

27

20

26

26

26

27

27

29

30

30

31

30

30

30

30

30

31

31

31

859

27.7

1,700

Nov.

31

3l

*31

32 

32

34

34

35

35

35

35

35

38

54

65

61

76

92

76

71

103

224

148

121

107

99

96

94

101

105

2,131

71.0

4,230

Dec.

164

355

213

170 

ISO

515

689

375

578

582

406

341

318

296

278

269

252

244

812

1,410

1,100

9,690

»66.000

*31,500

11,000

10,500

10,000

5,070

3,600

3,100

2,900

162,877

5,254

323,100

Jan.

2,600

2,300

2,150

2,050 

2,000

1,950

1,900

*1,880

1,800

1,750

1,700

1.650

1,700

1,800

3,650

6,750

3,710

*2,800

2,340

2,180

2,140

2,360

6,840

4,350

7,430

*7,940

8.110

4,540

3,310

2,720

2,380

100,780

3,251

199,900

Feb.

2.040

J.900

1,730

1,650 

1,600

1,510

1,410

1,370

1,290

1,260

1,230

1,220

1,210

1,200

1,140

1,080

1,060

1,060

1,020

1,020

988

980

1,720

1,380

1,200

1,220

1,160

1,130

1,120

37,898

1,307

75,170

Mar.

1,080

1,060

1,070

1,060 

1,070

1,010

964

980

980

1,000

1,040

1,020

1,020

1,030

1,030

1,060

1,150

1,220

1,310

1,290

1,360

*1,450

1,560

1,840

2,060

2,100

1,930

1,900

2,080

2.250

2,250

42,224

1,362

83,750

Apr.

 1,980

1,630

1,490

1.410 

1,430

1,660

2,030

2,250

2,580

3,010

2,500

2,250

1,950

1,830

1,700

1,800

1,830

1,960

2,100

2,420

2,770

2,850

3,550

3,860

*4,170

4.220

3,620

3,020

2,860

2,940

73,670

2,456

146,100

May

3,090

3,440

3,960

7,440 

5,740

4,320

3,940

3,440

3,680

3,550

3,430

3,230

2,760

2.600

2,840

3,590

4,260

4,180

5,320

4,680

6,620

7,000

9.000

*8,840

7,290

*7,530

7,580

6,620

6,740

7,000

7,030

160,740

5,185

318,800

June

6,380

6,450

6,620

51970

5,190

5,560

5,920

6,160

6,360

6,330

5,970

5,780

5,360

4,440

3,760

3,780

4,260

4,680

4,220

*3,700

3,840

4,020

4,080

3,760

3,520

*3,840

3,900

3,960

5.540

147,940

4,931

293,400

July

2,700

2,350

2,040

1,920 

1,870

1,810

1,790

1,810

1,820

1,710

1,540

1,360

1,250

1,130

1,040

1,040

1,040

1,070

1,450

2,150

2.840

1,760

1,990

1,950

2,180

1,850

2,170

1,520

1,270

1,040

*885

52,345

1,689

103,800

Aug.

785

700

607

542 

505

469

446

435

429

435

424

424

396

354

339

334

324

314

305

296

286

264

251

243

234

239

234

218

207

203 

*199

11,441

369

22,690

Sept.

192

185

185

181 

181

171

161

154

151

148

145

135

132

132

129

118

110

104

101

99

104

115

120

112

107

101

99

104

154

168

4,098

137

8,130

Calendar year 1955: Max 66,OOO Mln 20 Mean 1,139 Ao-ft 824,700

Water year 1955-56: Max 66, OOO Mln 20 Mean 2,178' Ao-ft 1,581,000

,400

j. o \ < .30 J-^/i ria-y oj. \t a.iu.^ f,yov uia \o.o» i u;; uune J.J. v* a.m.; /,££U CIS vo.ou iu;.

* Discharge measurement made on this day.

Note. No gage-height record Dec. 23, Dec. 29 to Jan. 7, Jan. 9-17; discharge estimated on basis 

if change In contents In Lake McClure and records for station at Pohono Bridge and South Fork Meree 

Iver near El Portal.
298 SAN JOAQUIN -RIVER BASIN

Lake McClure at Exchequer, Calif.

Location. Lat 37°35'10", long 120°16'05", near center of sec. 13, T. 4 S., R. 15 E., at 

center of upstream face of Exchequer Dam on Merced River, 1 mile east of Exchequer and 

5.5 miles northeast of Merced Palls.

Drainage area. 1,020 sq mi, approximately.

Records available. April 1926 to September 1930 (daily gage heights; also summary of yearly 

contents in WSP 881), October 1930 to September 1956.

Gage. Indicator in powerhouse at foot of dam actuated by float in reservoir and selsyn 

motor circuit; indicator read every half hour when powerhouse is operating, once daily, 

at midnight, when not operating. Datum of gage is at mean sea level (levels by Merced 

Irrigation District).

Extremes. Maximum contents during year, 286,400 acre-ft June 23, 27 (elevation, 708.9 ft); 

minimum, 1,620 acre-ft Nov. 1, 2 (elevation, 462.3 ft).

1926-56: Maximum contents, 290,800 acre-ft Dec. 4, 1950 (elevation, 710.5 ft); practically no storage at times in 1926, 1930-31, 1934.

Remarks. Reservoir is formed by concrete gravity-type dam completed in 1926; storage began 

in April 1926. Usable capacity, 280,900 acre-ft between elevations 442.6 ft (bottom of 

sluice valve) and 707.0 ft (top of spillway gates) above mean sea level. Water passes 

through powerplant at dam and down Merced River to diversion dam of Merced Irrigation 

District's main canal. Records show total contents at 12 p.m.; dead storage, 400 acreft or less.

Cooperation. Sage-height record, furnished by Merced Irrigation District, obtained in 

connection with a Federal Power Commission project.

Revisions (water years). WSP 881: 1926-32 (yearly summaries only). WSP 1345: 1951(M).

Capacity table, water year 1955-56 (elevation, In feet, 

and contents, in acre-feet)

462.3

480

500

520

1,620

3,520

7,400

13,800

550

590

650

709

31,000

67,900

155,000

286,700

Contents, in acre-feet at 12 p.m., water year October 1955 to September 1956

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

25 

24

25

26 

27 

28 

29 

30 

31

ill

Oct.

2,700 

2,680 

2,660 

2,640 

2,620

2,590 

2,550 

2,510 

2,460 

2,420

2,370 

2,340 

2,300 

2,250 

2,210

2,170 

2,130 

2,090 

2,050 

2,010

1,970 

1,920 

1,880 

1,840 

1,810

1,770 

1,730 

1,720 

1,680 

1,660 

UfW

462.5 

-1,090

Nov.

1.620 

1,620 

1,630 

1,640 

1,650

1,660 

1,660 

1,670 

1,680 

1,680

1,670 

1,660 

1,660 

1,680 

1,730

1,780 

1,830 

1,930 

2,020 

2,120

2,220 

2,320 

2,550 

2,900 

3,020

3,120 

3,220 

3,330 

3,410 

3.510

479. B 

+1,870

Dec.

5.800 

4,610 

5,040 

5,310 

5,520

6,980 

8,640 

9,540 

11,000 

11,900

12,700 

13,400 

14,000 

14,500 

15,100

15,600 

16,200 

16,700 

18,200 

21,500

23,800 

50,500 

198,700 

258,500 

264,800

272,600 

§78,900

TltJfoS 

260,500 

247,800 

240,300

690.8 

+236^00

Jan.

235,300 

234,600 

231,500 

229,500 

227,400

225,100 

223,700 

224,600 

225,600 

226,700

227,400 

228,300 

228,500 

226,500 

227,400

232,200 

230,200 

226,200 

222,800 

222,100

222,800 

223,000 

231,500 

230,200 

235,300

243,700 

§49,800

45,600 

239,400 

232,400 

226,200

, 684.8 

-14,100

Feb.

222,100 

221,600 

221,400 

222,300 

223,200

222,800 

222,100 

221,900 

221,900 

221,900

221,900 

222,100 

222,300 

222,100 

222,100

221,900 

221,900 

221,600 

221,200 

221,000

220,500 

220,000

221,000 

221,600 

221,900

222,100 

222,600 

222,600 

222,600

683.2 

-3,600

Mar.

222,600 

222,300 

222,100 

222,100 

221,900

221,400 

221,000 

220,500 

220,300 

219,800

219,300 

218,900 

218,400 

218,000 

217,500

217,000 

216,800 

216,600

216,600 

216,600

216,600 

216,600 

216,600 

217,300 

218,400

219,800 

220,700 

221,600 

222,800 

224,200 

225,800

684.6 

+3,200

Apr.

226.900

227,400 

227,400 

227,200 

227,200

227,200 

228,100 

229,700 

231,800 

234,800

237,000 

238,900 

239,800 

240,800 

242,000

242,700 

243,700 

244,900 

246,300 

248,000

249,800 

251,000 

254,000 

258,500 

263,800

269,800 

274,700 

278,300

280,800

706.8 

+55,000

May

277,300 

276,300 

276,500 

280,200

278,900

276,000 

276,000 

275,500 

275,500 

275,000

275,000 

275,700 

275,700 

273,400 

270,300

270,300 

271,600 

271,300 

271,100 

271,100

271,800 

273,900 

278,300 

280,200 

279,100

278,600 

279,400 

277,000 

276,500 

276,500 

276,500

705.2 

-4,300

June

276,000

276,500 

277,000 

277,600 

276,500

276,500 

277,000 

277,300 

277,300 

277,300

277,300 

276,800 

277,000 

278,900 

283,500

284,800 

285,600 

285,900 

286,200 

285,900

285,900 

286,200 

286,400

286,200 

286,200

286,200 

286,400 

286,200 

286,200 

285,900

708.7 

-9,400

July

285,400

284,800 

284,000 

283,700 

283,200

282,900 

282,600 

282,400 

282,100 

282,100

281,600 

280,800 

279,700 

278,100 

276,800

275,500 

274,200 

272,900 

272,100 

272,900

275,000 

275,200 

275,500 

275,700 

276,300

276,500 

277,000 

276,800 

275,500 

273,900 

271,800

703.4 

-14,100

Aug.

270,000

267,700 

265,300 

263,000 

260,500

258,200 

255,800 

253,200 

251,000 

248,500

246,300 

243,900 

241,500 

239,100 

237,000

234,600 

232,200 

229,900 

227,600 

224,600

222,100 

219,800 

217,500 

215,000 

212,600

209,700 

207,500 

204,600 

201,900 

199,800 

196,800

671.5 

-75,000

Sept.

194,100

191,600 

189,100 

186,700 

184,700

182,500 

180,100 

177,700 

175,700 

173,100

170,600 

168,600 

166,300 

164,000 

162,000

159,700 

157,500 

155,400 

153,200 

151,200

149,400 

147,500 

146,000 

143,600 

141,500

139,700 

137,800 

135,900 

134,000 

152.400

636.7 

-64,400

Calendar year 1955.................... * +215,500

Water year 1955-56.................... * +129,700

t Elevation, in feet, at end of month. 

* Change In contents in acre-feet.
SAN JOAQUIN RIVER BASIN 299

Merced River at Exchequer, Calif.

Location. Lat 37°34'55", long 120°16'45", on line between sees. 13 and 14, T. 4 S., R. 

15 E., on right bank at Exchequer, 0.65 mile downstream from Lake McClure and 5 miles 

northeast of Merced Palls.

Drainage area. 1,035 sq ml.

Records available. November 1915 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 400 ft (from topographic map). Prior to 

Apr. 29, 1922, staff gage .and Apr. 29 to Oct. 84, 1922, water-stage recorder, at site 

1 mile upstream at different 'datum.

Average discharge. 40 years (1916-56), 1,244 cfs (900,600 acre-ft per year).

Extremes. Maximum discharge during year, 10,400 cfs Dec, 27 (gage height, 11.00 ft); minImum, 28 cfs Nov. 4.

1915-56: Maximum discharge, 46,800 cfs Dec. 4, 1950 (gage height, 22.6 ft, from 

floodmarks), from rating curve extended above 13,000 cfs on basis of computation of 

peak flow over dam; minimum daily, 7 cfs Dec. 30, 1940.

Remarks.--Records excellent except those below 500 cfs, which are good. No large diversion 

aEove station. Plow regulated by Exchequer powerplant and Lake McClure beginning in 

April 1926 (see preceding page). Records of chemical analyses for the water year 1956 

are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

0.0 

.2 

.4

.6 

.8

24

42

65

93

127

3.0 

5.0 

7.0 

9.0 

11.0

990

2,510

4,560

7,300

10,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

43

4T

43

44

44

44

49

53

53

53

53

51 

50

50

49

46

46 

46

53

55

51

52

51

50

49

48

48

48

46 

46

45

1,503

48.5

2,980

NOV.

41 

32

*30

3T

34

34

34

35

37

37

38

39 

40

40

40

43

45 

46

46

48

48

50

53

5455-

45

46

48

48 

48

1,260

42.0

2,500

Dec.

50 

51

51

48

49

55

50

48

48

49

50

51 

52

52

53

53

52 

49

46

44

51

65

122

6,800

8,980

8,980

9.500

9,140

9,000 

8,320

6,330

68,289

2,203

135,400

Jan.

4,780 

*3,360

2,980

3,060

3,440

3.34O

2,200

*1,550

1,530

1,520

1,250

1.240 

1,740

3,130

3.130

5,070

5,160 

5,110

3,970

2,280

2,000

2,060

4,490

5,550

5,890

6,430

7.540 7.2Y6

6,790 

*6,480

5,790

119,930

3,869

237,900

Feb.

4.090

2,ls6

1,760

1,270

1,500

2,000

1,870

1,540

1,550

1,250

1,260

1,260 

1,250

1,260

1,250

1,270

1,270 

1,260

1,250

1,250

1,250

1,260

1.240

1,240

1,260

1,270

1,250

1,260

1,250

 42,870

1,478

85,030

Mar.

«1.250 

1,250

1,260

1,270

1,270

1,270

1,300

1,280

1,280

1,270

1,250

1,280

1.2SO

1,280

1,270

1,390

1,390 

1,330

1,360

1,390

1,400

1,400

1,500

1,510

1,540

1,540

1,520

1,540

1,580 

1.600

1,570

42,620

1,375

84,540

Apr.

1,550 

*1,570

1,580

1,580

1,580

1,570

1,580

1,580

1,580

1,590

1,590

1,460 

1,460

1,480

1,420

1,470

1,470 

1,470

1,480

1,620

1,910

2,200

2,300

1,660

 1,580

1,600

1,500

1.540

1,340 

3.580

49,690

1,656

98,560

May

*4,730 

3,950

3,650

5,520

6,390

5,660

3,800

3,760

3,820

3,860

3,230

2,980 

2.940

4,150

4,230

3,460

3,550 

4,390

5,010

4,670

5,850

6,720

7,150

8.020

7",776

*7 , 660

7,100

7,640

6,840 

6,780

6,900

162,180

5,232

321,700

June

6,560 

5,790

6,240

6,360

6,250

4,980

5,03O

5,720

5,970

6,130

6,280

5,930

5,410

3,950

2.240

3,080

3,380 

4,040

4,400

4,360

3,560

3,640

4,020

4,010

3,660

3,480

3,780

3,960

3,760 

3,440

139,410

4,647

276,500

July

3,080 

2,760

2,450

2,220

2,080

2,020

2,020

2,000

1,900

1,860

1,890

1,880 

1,860

1,820

1,750

1,740

1,750 

1,770

1,790

1,800

1,820

1,820

1,830

1,860

1,900

1,910

1,880

1,880

1,900 

1,900

*1 890

61,010

1,968

121,000

Aug.

1.850 

1,826

1,780

1,75O

1,680

1,670

1,690

1,700

1,620

1,610

1,650

1,650 

1,580

1,570

1,570

1,550

1,520 

1,510

1,540

1,550

1,520

1,520

1,500

1,490

1,500

1,500

1,500

1,490

1,480 

1,450

1,430

49,180

1,586

97,550

Sept.

1.420 

1,410

1,420

1,410

1,410

1,400

1,570

1,330

1,310

1,530

1,280

1,280 

1,280

1,280

1,260

1,240

1,220 

1,220

1,200

1,130

1,090

1,060

1,040

1,040

1,040

1,040

1,040

1,020

1,010 

1,010

36,590

1,220

72,580

Calendar year 1955: Max 9,500 Mln 30 Mean 909 Ac-ft 658,200

Water year 1955-56: Max 9,500 Mln 30 Mean 2,116 Ac-ft 1,536,000

Discharge measurement made on this day.
300 SAN JOAQUIN RIVER BASIN

Merced River near Stevlnson, Calif.

Location.--Lat 37°22'15", long 120°55'45", in SWij-NEir sec. 36, T. 6 S., R. 9 E., on right 

bank 5 miles upstream from mouth and 6 miles northwest of Stevinson.

Drainage area.--1,874 sq mi.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Datum of gage is 55.09 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to Aug. 15, 1955, at datum 1.00 ft higher.

Average discharge.--16 years, 784 cfs (567,600 acre-ft per year).

Extremes. Maximum discharge during year, 11,200 cfs Dec. 28 (gage height, 18.10 ft); minimum, 77 cfs Nov. 12.

1944-56: Maximum discharge, 13,600 cfs Dec. 5, 1950 (gage height, 19.05 ft, present 

datum); minimum, 48 cfs July 15, 1955.

Remarks.--Records good. Practically entire flow is diverted above station during irrigation season; some return flow enters above. Plow regulated by Lake McClure (see 

p. 298). Records of chemical analyses for the water year 1956 are given in WSP 1453.

Cooperation.--Eight discharge measurements furnished by California Department of Water 

Resources.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Feb. 25 to Mar. 31, Apr. 13-25, 

Apr. 28 to June 18, June 20, 21, July 2 to Sept. 10)

1.2 

1.5 

2.0 

3.0 

6.0

Oct. 1 to Dec. 28, 

Feb. 25 to Sept. 30

82 9.0 2,290

114 12.0 3,840

Dec. 28 to Feb. 24

173

334

1,080

15.0

18.0

6,300 

ll.OOO

7.9

9.0

11.0

1,510

1,880

2,840

13.0 4,320

16.0 7,500

18.0 11,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

96 

105

92

107

89.

96

102

104

107

102

103

*114

122

112

114

133

144

132

124

117

108

113

114

*117

114

*111

113

113

104

98

96

3,416

110

6,780

Nov.

96 

95

95

95

95

93

*93

94

93

87

85

83

1W

113

110

111 

115

113

112

112

115

112

*113

115

116

114

115

117

116

116

3,141

105

6,230

Dec.

120 

T53

120

126

129

127

130

130

138

138

142

142

141

*139

138

139 

141

143

141

145

149

152

206

3,630

5,940

*7,670

9,280

10,900

10,200

9,810

*9,540

70,169

2,264

139,200

Jan.

8,230 

6,5SO

4,530

*5,790

3,760

4,950

4,390

3,320

2,590

2,260

2,140

1,940

1.650

1,946

3,200

4,170 

*5,400

5,500

5,490

4,800

*3,320

*2,590

2,570

4,460

*5,510

6,080

6,770

7,550

7,630

7,310

7,000

141,600

4,568

280,900

Feb.

«6,520 

5,29tJ

3,210

2,540

2,070

2,030

2,260

2,230

2,000

1,920

1,750

1,720

*1,690

1,670

1,650

1,620 

1,610

1,590

1,580

1,560

1,540

1,520

l.Sio

*1,540

1,600

1,610

1,640

1,660

1,630

60,770

2,096

120,500

Mar.

1,620 

1,600

1,550

1,560

1,540

1,520

1,500

1,490

1,480

1,490

1,480

*1,480

1,460

1,450

1,380

1,100 

922

954

975

*908

902

640

770

685

615

582

517

478

468

469

455

34,258

1,105

67,950

Apr.

476 

476

464

460

460

438

436

451

*510

446

462

615

790

835

900

945 

946

939

908

866

870

920

1,260

1.570

942

742

760

910

936

910

22,449

748

44,550

May

1.790 

5,500

5,530

2,910

5,940

5,000

4,740

5,570

3,150

*5,140

5,180

2,780

2,490

2,410

2,860

3,460 

2,550

2,420

2,910

5,540

5,200

5,940

4,720

4,960

5,640

*5,730

5,950

5,460

5,680

5,470

5,120

119,540

5,850

256,700

June

5,250 

5,140

4,510

4,650

4,720

4,640

5,840

5,660

4,010

4,510

4,430

4,550

*4,590

5,940

3,110

1,570 

1,580

1,860

2,340

2,820

2,900

2,210

2,090

2,350

2,510

2,220

1,950

2,060

2,270

2,150

97,790

3,260

194,000

July

1.940 

1,636

1,520

1,060

*862

792

730

658

620

567

517

462

422

594

589

385 

378

342

518

296

260

268

261

256

240

225

213

206

205

zTf

227

16,698

539

33,120

Aug.

230 

226

224

232

251

276

576

259

232

227

221

215

207

195

181

*166 T§0"

203

227

245

221

214

212

195

181

235

252

206

187

186

194

6,750

217

15,550

Sept.

226 

233

254

255

227

235

219

217

229

224

207

5IS

223

241

249

232 

246

*237

227

276

556 50"5~

506

280

251

238

232

226

210

251

7,287

243

14,450

Calendar year 1955: Max 10,900 Min 62 Mean 329 Ac-ft 238,100

Water year 1955-56: Max 10,900 Min 83 Mean 1,595 Ac-ft 1,158,000

Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 301

Merced River Slough near Newman, Calif.

Location. Lat 37°21'35", long 120°57'40", In NE^NE^ sec. 3, T. 7 S., R. 9 E., on left 

bank 0.1 mile downstream from bridge, 0.2 mile downstream from head of slough between 

Merced and San Joaquln Rivers, and 4.5 miles northeast of Newman.

Records available.--October 1941 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 54.44 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to July 31, 1948, at datum 2.00 ft higher.

Average discharge.--15 years, 87.7 cfs (63,490 acre-ft per year).

Extremes.--Maximum discharge during year, 4,240 cfs Dec. 28 (gage height, 10.90 ft); no 

flow during several months.

1944-56: Maximum discharge, 6,410 cfs Dec. 5, 1950 (gage height, 11.29 ft), from 

rating curve extended above 3,400 cfs; no flow for several months each year.

Remarks. Records fair. Slough flows from Merced River to San Joaquln River, bypassing 

gaging station on San Joaquln River near Newman.

Cooperation. Six discharge measurements furnished by California Department of Water 

Resources.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic feet

per second) 

(Shifting-control method used Dec. 24-27)

Oct. 1 to Jan. 18 Jan. 19 to Apr. 30 May 1 to Sept. 30

7

8

8

9

9

9

10

10

10

5

0

5

0

4

8

2

6

9

1,

1,

3,

4,

150

226

346

505

710

.0

.1

.2

.3

.4

190 4.5

990 4.6

140 4.7

240 5.0

5.5

0

.1

.3

.6

1.0

1.8

3.1

5.0

12

29

6

7

7

8

8

9

9

10

10

0

0

5

0

5

0

5

0

5

50

104

164

256

392

555

840

1,550

2,820

6.9

7.0

8.0

9.0

9.6

Note.

precedi

below 6

__

ng

.9

96

102

212

362

462

same as

table

ft.

5.0 19

6.0 52

7.0 102

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*) 

(*)

0

0

0

Dec.

*0

O

0

0

o

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

143

482

*855

2,310

4.140

4,040

*3,850

3,660

19,480

628

38,640

Jan.

2.980

2,060

833

*537

505

746

647

441

*302

*217

181

142

125

T26

280

428

*689

764

*840

702

*432

*270

*234

500

784

1,090

1,510

2,060

2,350

2,350

2,140

27,265

880

54,080

Feb.

*1.810

1,120

493

334

214

185

205

198

158

137

110

101

*95

92

88

81

80

74

69

62

58

52

52

*58

62

65

68

70

66

6,257

216

12,410

Mar.

62

57

46

39

30

20

14

10

7.6

6.4

5.2

*3.9

3.1

2.3

1.0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

307.6

9.92

610

Apr.

(*)

O

0

0

May

17

124

116

74

180

332

301

115

90

*88

91

64

42

36

63

129

45

35

65

127

89

169

281

317

*412

423

460

*402

428

413

364

5,892

190

11,690

June

381

368

276

290

296

293

179

139

184

227

240

*251

229

172

96

1.4

1.6

9.2

32

60

70

25

20

35

40

25

12

20

30

20

4,022.2

134

7,980

July

12

4

2

1

*(5

0

0

0

o

0

o

0

0

0

o

o

o

0

0

o

0

0

o

0

0

0

0

0

0

0

0

19

0.61

38

Aug.

0

0

0

Sept.

(*)

-- '

0

0

0

Calendar year 1955: Max 4,140 Min o Mean 53.4 Ac-ft 38,640

Water year 1955-56: Max 4,14O Min 0 Mean 173 Ac-ft 125,400

* Discharge measurement or observation of no flow made on this day.

Note.--No gage-height record June 20 to July 5; discharge estimated on basis of record for Merced 

River near Stevinson.
302 SAN JOAQUIN RIVER BASIN

San Joaquin River near Neman, Calif.

Location. Lat 37°21'02", long 120°58'34", in SWi sec. 3, T. 7 S., R. 9 E., on left bank 

at bridge on Hills Ferry Road, 300 ft downstream from Merced River and 3.5 miles northeast of Newman.

Drainage area. 9,990 sq mi.

Records available.--April 1912 to September 1956. Prior to Oct. 1, 1937, and subsequent 

to Oct. 1, 1943, flow that bypassed station at discharges above about 9,000 cfs not 

included in records.

Gage. Water-stage recorder. Datum of gage is 47.24 ft above mean sea level (levels by 

""Bureau of Reclamation). Prior to Mar. 3, 1931, staff gage at various sites within 60 ft 

of bridge and at same datum.

Average discharge. 44 years, 2,272 cfs (1,645,000 acre-ft per year).

Extremes. Maximum discharge during year, 16,800 cfs Dec. 29 (gage height, 17.05 ft); minimum, 124 cfs Nov. 9; minimum gage height, 1.30 ft Nov. 9.

1912-56: Maximum discharge, 33,000 cfs Mar. 7, 1938 (gage height, 18.50 ft), Including flow in Merced River Slough; minimum, 15 cfs Aug. 9, 10, 1924.

Remarks. Records good. Natural flow of stream affected by storage reservoirs, groundwater withdrawals, diversions for irrigation, and imported water; low flows consist 

mainly of return water from irrigated areas. Record for Merced River Slough (see preceding page) shows flow bypassing station.

Cooperation. Three discharge measurements furnished by California Department of Water 

Resources.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used July 18 to Sept. 30)

Oct. 1 to Jan. 30 Jan. 31 to Sept. 30

1.3 

2.0 

3.0 

5.0

124

281

620

1,560

8.0

12.0

15.0

17.1

3,540

7,480

11,400

17,000

2.5 

3.0 

4.0

360

515

890

6.0 1,920

8.0 3,410

12.0 7,480

Note. Same as preceding 

table above 12.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30 

31

Total

Mean

Ao-ft

Oct.

183 

187 

180

176

161

159

163

165

167

161

159

*161

172

159

163

169

T7S" 189

174

169

159

161

157

161

159

152

154

154 

146

134 

T36

5,068

163

10,050

Nov.

136 

140 

140

140

138

130

*128 

136

128

144

140

136

154

174

178

176

180

183

180

183

189

Tf5

185

187

189

185

185

187 

183

187

4,906

164

9,730

Dec.

180 

180 

176

T5o

185

183

183 

189

205

201

203

217

231

*201

194

194

205

222

205

205

205

205

252

2,920

6,270

*8,840

12,100

15,600 

16.700

*16,600 

16, 300

99,931

3,224

198,200

Jan.

15,600 

14,400 

12,700

11,700

*11,500

11,900

12,000 

11,400

10, 600

*9,990

9,560

9,170

8,920

8.790

9,400

9,990

10,700

*11,100

11,400

*11,500

*10,800

9,920

*9,470

9,970

11,000

11,800

12,700

13,800 

15,300

16.000 

15, 600

358,680

11,570

711,400

Feb.

*15.000 

13, 900 

12,100

11,000

10,100

9,660

9,580 

9,450

9,180

8,960

8,740

8,600

8,510

*8,430

8,330

8,040

8,020

7,780

7,610

7,340

7,200

6.950

6,990

7,160

7,370

7,530

7,640

7,620 

7,550

256,340

8,839

508,400

Mar.

7.420 

7,220 

6,930

6,440

5,810

5,130

4,530 

4,080

3,760

3,620

3,520

3,430

3,310

3,120

2,890

2,430

1,970

1,830

1,760

1,660

*1,610

1,510

1,400

1,300

1,200

1,140

1,050

989 

971

922 

894

93,846

3,027

186,100

Apr.

940 

984 

1,010

1,010

984

962

944

958

*984

930

935

1,120

1,380

1,500

1,630

1,750

1,780

1,760

1,670

1,570

1,480

1,390

1,550

1,420

1,360

1,110

1,130

1,610 

1,930

1.990

39,771

1,326

78,880

May

2.420 

3,930 

4,190

3,670

4,160

5,410

5,600 

4,520

3,900

*3,790

3,850

3,620

3,290

3,130

3,170

4,080

3,160

2,870

3,140

4,010

3,770

4,230

5,200

5,610

6,340

*6,740

7,080

*7,020 

7,110

7.500

7,110

143,420

4,626

284, 500

June

7,200 

7.260 

6,890

6,790

6,870

6,930

6,470 

5,900

5,760

5,860

5,880

*5,930

5,840

5,460

4,760

2,670

2,220

2,380

2,640

3,030

3,160

2,600

2,320

2,500

2,740

2,530

2,180

2.150 

2,440

2,300

131,660

4,389

261,100

July

2,130 

1,870 

1,580

1,340

*1,150

1,020

953 

870

842

786

750

669

641

616

613

644

582

543

546

515

498

477

477

456

447

414 in

429"

435 

435

23,532

759

46,680

Aug.

456 

417 

408

420

484

*536

498

471

459

447

420

411

426

393

387

408

414

447

459

484

462

471

453

414

390

420

441

414 

384

381

13,444

434

26,670

Sept.

432 

477

474

456

447

447 

444

450

471

498

515

536

*543

526

477

480

490

515

606

680

641

648

638

582

560

515

487 

453

480

15,409

514

30,560

Calendar year 1955: Max 16,700 Mln 128 Mean 597 Ao-ft 432,400

Water year 1955-56: Max 16,700 Mln 128 Mean 3,240 Ao-ft 2,352,000

* Discharge measurement made on this day
SAN JOAQUIN RIVER BASIN 303

Orestimba Creek near Newman, Calif.

Location. Lat 37°19'09", long 121°07'12", on line between sees. 17 and 20, T..7 S., R.

8 E., on left bank 120 ft downstream from highway bridge, 3 miles downstream from Oso

Creek, and 5 miles west of Newman. 

Drainage area. 135 sq mi (revised). 

Records available. January 1932 to September 1956. 

Gage. Water-stage recorder. Datum of gage is 191.86 ft above mean sea level, adjustment

of 1929.

Average discharge. 24 years, 15.2 cfs (11,000 acre-ft per year). 

Extremes. Maximum discharge during year, 5,620 cfs Dec. 23 (gage height, 5.18 ft); no

flow for several months.

1932-56: Maximum discharge, 6,450 cfs (revised) Jan. 21, 1943 (gage height, 5.95ft),

from rating curve extended above 1,200 cfs on basis of shape of 1952 and 1955

ratings defined by measurements to 5,000 cfs; no flow during several months each year. 

Revisions. The figures of maximum discharge for some water years have been revised,

as shown in the following table. They supersede figures published in the water-supply

papers indicated.

WSP

736 

861 

901 

931 

981 

1041 

1215

Water 

year

1932 

1938 

1940 

1941 

1943 

1945 

1951

Date

Feb. 

Feb. 

Feb. 

Apr. 

Jan. 

Feb. 

Dec.

8, 1932 

11, 1938 

27, 1940 

4, 1941 

21, 1943 

2, 1945 

3, 1950

Discharge 

(cfs)

4,260 

3,230 

3,440 

3,070 

6,450 

5,970 

2,920

Gage height 

(feet)

5.15 

4.80 

4.90 

4.72 

5.95 

5.74 

4.49

Remarks. Records good. No storage or large diversion.

Revisions. Revised figures of discharge, in cubic feet per second, for the water year

1945, and revised figures of peak discharge for the water year 1938, superseding those

published in WSP 861 and 1041, are given herewith:

Feb. 1, 1945........... 485 cfs

Feb. 2, 1945........... 2,550 ofs

Month

Water year 1944-45... 

Calendar year 1945...

Cfs -days

4,616.8 

5,383.8

Maximum

2 550

2,550 

2,550

Minimum

0 

0

Mean

12.6 

14.8

Runoff In 

acre-feet

ft 2OO

9,160 

10,680

Revised peak discharge. 1937-38: 

(4:30 a.m.) 2,950 cfs.

Feb. 11 (4 a.m.) 3,230 cfs; Feb. 14

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24 

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

(*)

0

0

0

Nov.

( )

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*5 . 170 

*1,310 

300

228

*205

104

62

*47

191

5,617

181

11,140

Jan.

124

122

80

60

110

165

105

180

114

*90

75

60

50

50

57

75

67

56

48

*67

74

61

67 

66 

478

391

464

251

162

117

94

3,980

128

7,890

Feb.

74

61

54

*49

46

40

36

34

31

29

27

26

23

21

20

19

18

19

18

22

*31

25

123 ^78 

53

48

44

34

32

1,135

39.1

2,250

Mar.

30

26

25

25

23

22

19

18

18

16

*16

15

14

14

12

12

12

11

10

9.6

9.6

9.1

8.6 

8.6 

8.6

8.0

7.3

*7.0

7.0

HO D

434.6

14.0

862

Apr.

6.6

6.2

5.6

5.2

4.8

4.3

4.0

3.6

3.4

3.1

4.5

13

9.1

7!o

6.2

4.8

4.0

3.1

2.4

2.1

1.8

1.7

1.5

44

1.4

1.8

2.0

1.6

1.4

119.0

3.97

236

May

0.9

*.8

.9

.8

1.0

1.0

.8

1.1

1.4

1.8

1.7

1.1

.7

.5

.4

.4

.4

.4

.4

.3

.2

.2

.2 

.2 

.2

.2

~7T .1

.2

.2

.2

18.8

0.61

37

June

24 

.2

.2

*.2

.2

.2

.2

.1

.1

.1

.1

0

0

0

0

.1.1.1

.1.1

.1

.1

.1 

.1 

.1

.1

.2

.1

.1

.1

3.4

0.11

6.7

July

0.1

.1

.1

.1

**.!

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

0

0

3.2

0.10

6.3

Aug.

0

0

0

Sept.

(*)

0

0

0

Calendar year 1955: Max 3,170 Mln 0 Mean 15.5 Ac-ft 11,180

Water year 1955-56: Max 3,170 Mln 0 Mean 30.9 Ao-ft 22,430

ge (base. 50 ofs). Dec. 23 (10 a.m.) 5,620 ofs (5.18 ft); Dec. 26 (5 p.m.) 421 ofs 

. 31 (9 a.m.) 310 cfs (1.92 ft)} Jan. 5 (10 p.m.) 231 ofs (1.74 ft); Jan. 8 (3:30 a.m.)

Peak dlschargi 

(2.12 ft); Dec. .. ........ ___ .__ ._.._ ,. ...... _ ,_. ,._., ... ,_... ..,, __... _ ,.... _

278 ofs (1.85 ft); Jan. 20 (7:30 p.m.) 100 ofs (1.30 ft); Jan. 25 (12:30 p.m.) 956 ofs (2.76 ft); 

Feb. 23 (7 a.m.) 208 ofs (1.68 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.
304 SAN JOAQUIN RIVER BASIN

Falls Creek near Hetch Hetchy, Calif.

Location. Lat 37°58', long 119°46', in NE^ sec. 3, T. 1 N., R. 20 E., on right bank in

Yosemite National Park, 0.2 mile upstream from Wampana Falls, 1 mile upstream from

mouth, and 2 miles northeast of Hetch Hetchy. 

Drainage area. 45.2 sq mi.

Records available.--November 1915 to September 1956. Published as "near Sequoia" 1916-18. 

Gage.--Water-stage recorder. Altitude of gage is 5,600 ft (from topographic map). 

Average discharge.--40 years (1916-56), 143 cfs (103,500 acre-ft per year). 

Extremes. Maximum discharge during year, 6,660 cfs Dec. 23 (gage height, 9.00 ft, from

floodmarks), from rating curve extended above 2,500 cfs as explained below: no flow

Oct. 1 to Nov. 18.

1915-56: Maximum discharge, 6,660 cfs Nov. 19, 1950, Dec. 23, 1955 (gage height,

9.00 ft), from rating curve extended above 2,500 cfs on basis of velocity-area studies;

no flow at times during many summers. 

Remarks. Records good except those for periods of no gage-height record, which are fair.

No storage or diversion. 

Cooperation. Water-stage-recorder graph and eight discharge measurements furnished by

city and county of San Francisco. 

Revisions (water years). WSP 531: 1917(M). WSP 931: 1938.

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

0.8 

1.0 

1.2 

1.4 

1.6

1.8

1.9

2.0 

2.2 

2.5 

2.8

Oct. 1 to Dec. 23

O 3.1 

.1 3.5 

.2 4.0 

4.5

Dec. 24 to Sept. 3O

1.5 

2.7 

4.0 

5.6

5.5 

6.0 

7.0 

8.0 

9.0

77

145

260

395

580

850

1,200

2,270

3,800

6,660

2.8 

3.0

5.4

7.6

15

25

41

62

3.5 

4.0 

4.5 

5.0 

6.0 

7.0

135

250

380

560

1,170

2,270

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Moan

Ac-ft

Oct.

0

0

0

Nov.

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3.7

12

28

14

11

11

11

14

21

21

19

17

182.7

6.09

362

Dec.

22

27

24

b25

25

129

59

66

141

70

58

58

*50

50

50

45

45

60

400

300

ZOO

1,OOO

5.000

2,000

1,000

1,500

900

300

200

160

140

14,104

455

27,970

Jan.

120

100

90

*85

90

82

86

86

86

83

98

104

101

158

596

378

280

200

155

145

130

262

297

122

153

119

101

*95

91

95

97

4,485

145

8,900

Feb.

93

84

78

79

77

70

69

68

65

64

66

73

74

74

70

72

65

60

58

54

54

57

64

59

59

59

64

62

58

1,949

67.2

3,870

Mar.

58

62

68

72

69

65

64

64

72

78

80

77

77

79

82

93

106

121

130

131

149

163

185

218

242

255

238

190

205

228

*230

3,951

127

7,840

Apr.

171

128

106

100

114

141

190

242

288

315

248

178

137

119

126

131

151

182

230

292

328

359

448

500

488

400

300

250

200

200

7,062

235

14,010

May

*250

322

407

938

504

345

298

232

258

195

242

195

155

141

190

320

410

401

438

445

726

971

1,040

*1.060

1,010

1,010

950

770

770

788

902

16,683

538

33,090

June

842

818

884

1.010

800

610

655

764

854

902

992

896

878

818

620

488

556

693

848

737

666

704

770

794

764

688

812

902

866

737

23,368

779

46,350

July

520

462

389

383

383

362

365

395

401

401

345

288

242

225

215

210

210

220

368

325

272

232

270

350

282

220

185

151

139

117

101

9,028

291

17,910

Aug.

87

74

64

57

53

49

44

43

43

43

42

41

39

36

36

32

30

28

27

26

*E6

24

23

22

21

21

19

17

16

15

ii

1,112

35.9

2,210

Sept.

13

13

13

13

12

11

9.8

8.9

9.2

10

13

1615-

12

9.8

7.9

6.6

5.8

5 t 4

5.6

6.4

8.6

7.9

6.8

6.0

5.4

5.8

6.0

8.2

*8.6

279.7

9.32

555

Calendar year 1955: Max 5,000 Min o Mean 141 Ac-ft lo2,40O

Water year 1955-56: Max 5,OOO Min o Mean 225 Ac-ft 163,100

Peak discharge (base. 900 cfs). Dec. 23 (time unknown) 6,660 cfs (9.00 ft); May 4 (8 a.m.) 1,070 

cfs (5.87 ft); May 24 (8 a.m.) 1,150 cfs (5.97 ft); June 4 (9 a.m.) 1,130 cfs (5.95 ft); June 11 

(8 a.m.) 1,170 cfa (6.00 ft); June 19 (9 a.m.) 985 cfa (5.75 ft); June 28 (9 a.m.) 1,060 cfs 

(5.86 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote. Ho gage-height record Dec. 16 to Jan. 4, Apr. 26 to May 1; discharge estimated on basis of 

recorded range in stage, weather records, and records for South Fork Tuolumne River near Oakland 

Recreation Camp and Alder Creek near Whitehall.
SAN JOAQUBJ RIVER BASIN 305

Hetch Hetchy Reservoir at Hetch Hetchy, Calif.

Location. La t 37°S7', long 119°47', in NW£ sec. 16, T. IN., R. 20 E., near center of 

O'Shaughnessy Dam on Tuolumne River at Hetch Hetchy in Yosemite National Park, 

1.5 miles downstream from Falls Creek.

Drainage area. 460 sq mi.

Records available. May 1923 to September 1930 (daily gage heights; also summary of yearly 

contents in WSP 881), October 1930 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by city and 

county of San Francisco). Prior to Oct. 1, 1927, staff gage at same site and datum.

Extremes. Maximum contents during year, 361,500 acre-ft July 19 (elevation, 3,806.6 ft); 

minimum, 104,800 acre-ft Dec. 18 (elevation, 3,647.0 ft).

1923-56: Maximum contents, 369,100 acre-ft Dec. 3, 1950 (elevation, 3,810.4 ft); 

no contents at times In 1929-31.

Remarks. Reservoir is formed by concrete gravity-tj 

 6.5 ft in 1923 and raised to 3,812.0 ft in IS

pe dam, completed to crest elevation 

7; storage began Apr. 6, 1923.

Ten-foot drum gates were installed on spillway in 1949. Usable capacity, 360,400 acreft between elevations 3,512.0 ft (somewhat above bottom outlet) and 3,806.0 ft (top of 

drum-type spillway gates) above mean sea level. Water flows down Tuolumne River 

15 miles to Early intake, where part is diverted through Hetch Hetchy aqueduct to 

Moccasin Creek powerplant. At Moccasin Creek diversion dam, water reenters Hetch 

Hetchy aqueduct and flows into Crystal Springs Reservoir, which supplies city of San 

Francisco. Surplus water is spilled into Don Pedro Reservoir at Red Mountain Bar. 

Hetch Hetchy Reservoir is main storage unit of Hetch Hetchy water-supply system for San 

Francisco.

Cooperation. Water-stage-recorder graph furnished by city and county of San Francisco.

Capacity table, water year 1955-56 (elevation, In feet, and 

contents, In acre-feet)

3,640

3,650

3,660

3,670

3,680

3,690

97,000

108,200

119,900

132,700

146,200

160,200

3,700

3,710

3,720

3,730

3,740

3,750

175,000

190,200

206,000

222,200

238,900

256,100

3,760 

3,770 

3,780 

3,790 

3,800 

 3,810

273,700

291,800

310,400

329,300

348,600

368,300

Contents, In acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

30 

31

ft)

(*)

Oct.

200,500

199,000

197,500

196,000

194,600

193,000

191,600

190,200

188,800

187,500

185,900

184,600

183,200

181,700

180,300

178,800

177,400

176,100

174,600

173,200

171,700

170,400

169,100

167,600

166,100

164,800

163,500

162,000

160,500

159,100

3,688.3

-43,900

Nov.

156,300

155,000

153,600

152,200

150,100

149,300

147,900

146,600

145,100

143,800

142,400

141,100

139,600

138,100

136,900

135,700

134,300

133,000

131,700

130,500

129,800

128,300

127,200

125,800

124,500

123,200

121,900

120 , 800

119,400

118,300

3,658.6

-39,500

Dec.

117,400

116,400

115,200

114,000

113,000

113,000

112,300

111,800

112,100

111,400

110,700

110,000

109,100

108,200

107,400

106,500

105,700

104,800

105 , 200

105,500

105,700

132,200

182,100

192,900

198,400

203,900

206,500

208,100

209,000

209,700

3,722.7

+92,000

Jan.

210,600

210,800

211,100

211,100

 211,100

211,100

211,100

211,100

210,600

210,500

210,500

210,500

210,500

211,300

216,500

219,400

220,900

221,900

222,700

223,200

223,400

225,000

227,000

227,700

228,700

230,200

230,700

231.000

231,000

230,800

3,735.1

+20,400

Feb.

230,300

230,000

229,800

229,300

228,800

228,300

227,800

227,300

226,700

225,800

225,700

225,000

224,500

224,200

223,500

2E2.900

222,200

221,500

220,900

220,200

219,700

219,100

218,900

218,300

217,600

217,100

216,500

216,000

215,700

3,726.0

-15,000

Mar.

215,300

214,700

214,000

213,700

213,100

212,600

211,900

211,300

210,600

210,200

209,700

208,900

208,400

207,900

207,400

207,100

207,100

207,300

207,300

207,600

208,100

208,400

209,500

210,600

212,300

213,700

215,000

215,700

215,200

214,400

3,724.9

-1,800

Apr.

212,300

210,500

208,700

206,600

204,700

203,500

202,800

202,400

202,500

203,200

202 , 800

201,900

200,600

199,200

197,500

196,000

194,900

194,200

193,500

193,700

194, "600

196,000

198,400

201,600

204,700

207,300

207,900

208, 100

207,800

207,800

3,721.1

-6,100

May

208,600

210,300

213,900

220,200

220,700

219,900

218,600

216,800

215,200

212,300

210,500

208,200

205,400

202,500

200,500

200,200

200,900

201,600

202 , 800

204,300

210,000

219,700

228,500

235,400

239,800

244,500

248,800

251,200

254,000

257,500 

261,000

3,752.8

+53,200

June

263,100

265,900

269,600

272,800

273,500

274,600

278,200

283,400

289,500

296,300

304,400

312,800

321,100

327,400

330,400

332,400

335 , 600

341,000

346,600

347,200

345,900

346,100

346,500

346,500

346,100

346,300

347,000

347,800

347,200

345,900

3,798.6

+84,900

July

344,300

343,200

342,400

342,800

344,500

347,200

305,200

353,300

356,400

359,000

360,800

361,000

360,600

360,400

360,600

360,600

360,400

361,000

361,500

361,400

360,600

360,400

361,000

361,000

360,400

360,800

360,000

359,400

359,400

360,000

3,805.9

+14,300

Aug.

36CL.200

360,000

360,000

359,800

359,400

359,000

358,400

358,000

357,800

357,200

356,800

356,200

355 , 600

355,000

354,500

353,500

352,900

352,100

351,500

350,700

349,800

349,000

348,000

347,200

346,300

345,300

344,300

343,200

342,200

341,200 

340,300

3,795.7

-19,900

Sept.

339,300

337,900

337,000

336,000

334,900

333,500

332,400

331,200

330,100

328,900

327,800

326,600

325,500

324,300

323,000

321,900

320,500

319,200

517,900

316,800

315,400

314,100

313,000

311,700

310,400

309,100

307,800

306,600

305,700

304j_400

3,776.8

-35,900

Water year 1955-56. ................... * +102,700

t Elevation, In feet, at end of month, 

t Change In contents In acre-feet.
306 SAN JOAQUIN RIVER BASIN

Tuolumne River near Hetch Hetchy, Calif.

Location.--La t 37°56', long 119°48', in SE-£ sec. 17, T. IN., R. 20 E., in Yosemite 

National Park, on left bank 1 mile downstream from O'Shaughnessy Dam at Hetch Hetchy 

and 2.5 miles downstream from Falls Creek.

Drainage area. 462 sq mi.

Records available. December 1914 to September 1956. Published as "below Hetch Hetchy 

dam site near Sequoia" 1915-18.

Gage. Water-stage recorder. Altitude of gage is 3,450 ft (from topographic map). 

Average discharge.--41 years (1915-56), 1,000 cfs (724,000 acre-ft per year).

Extremes.--Maximum discharge during year, 8,350 cfs June 29 (gage height, 12.30 ft); minimum daily, 710 cfs Feb. 28 to Mar. 2, Aug. 3.

1915-56: Maximum discharge, 12,900 cfs June 1, 1943 (gage height, 13.90 ft); minimum daily, 1.3 cfs Nov. 2, 3, 1923.

Remarks. Records excellent. Flow regulated by Hetch Hetchy Reservoir beginning in April 

1923 (see preceding page). No diversion above station.

Cooperation. Water-stage-recorder graph and seven discharge measurements furnished by 

city and county of San Francisco.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

6.0 

7.0 

8.0 

9.0

710

1,090

1,640

2,440

10.0

11.0

12.0

13.0

3,570

5,290

7,570

10,300

Discharge, In cubic feet per second, water year October 1955 to September 1955

Day

1 

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Moan

Ac- ft

Dot.

731 

728

724

731

734

731

728

728

734

731

734

734 

731

724

728

731

724

720

728

728

724

720

731

734

728

724

724

731

728

720 

734

22,580

728

44,790

Nov.

734 

731

734

728

724

728

738

 734

728

728

731

724 

111

72T

728

717

717

731

724

717

720

731

731

728

728

724

720

734

lii

742

21,837

728

43,310

Dec.

742 

738

734

728

731

745

731

734

734

731

738

742 

742

742

738

734

734

731

734

738

734

514

392" 428

794

808

770

756

752

752 

752

22,373

722

44,380

Jan.

 756 w

756

759

759

756

756

756

756

756

756 

756

756

787

787

787

787

787

787

787

808

822

'57J?

804

801

780

762

759

755 

755

23,941

772

47,490

Feb.

11

752

752

752

748

748

742

738

734

734

734 

734

731

731

728

728

724

720

720

720

717

717

717

717

717

714

710

7T5

21,203

731

42,060

Mar.

w720

738

738

738

734

734

734

734

734

731 

731

731

731

728

728

728

728

728

728

731

734

738

742

745

748

981

1,760

1.950 

 1,950

26,395

851

52,350

Apr.

1.920 

l]910

1,890

1,870

1,850

1,840

1,830

1,830

1,830

1,830

1,830

1,830 

1,820

1,800

1,790

1,770

1,770

1,750

1.740

1,740

1,750

1,770

1,780

1,810

1,840

1,870

1,880

1,880

1,880

 1,880

54,780

1,826

108 , 700

May

1.890

1*930

2,500

3,040

3,040

3,010

2,990

2,970

2,940

2,900

2,880 

2,840

2,800

2,770

2,760

2,760

2,760

2,770

2,790

2,840

2,930

3,440

4,690

5,290

5,330

5,370

5,450

5,490

5,530 

5.590

106,190

3,425

210,600

June

 5,630 

5,670

5,710

5,780

5,800

4,820

4,130

4,190

4,240

4,320

3,760

5.070 

3,130

3,180

3,210

3,220

3,230

3,270

3,790

5,760

6,350

*6,130

6,520

6,950

6,640

6,130

6,780

7,570

7.860 6,78"0'

153,620

5,121

304,700

July

5.550 

4,510

3,820

3,290

2,530

2,030

2,040

2,060

2,070

2,080

2,140

2,600 

2,440

1,990

1,910

2,070

2,210

2,260

3,010

3,570

3,490

3,000

2,940

3,110

3,130

2,850

2,800

2,250

2,140

1.110 

1,140

81,940

2,643

162,500

Aug.

1.150 

878

110

77T

801

801

748

728

724

748

756

752 

752

748

748

745

742

738

738

734

751 -728

724

720

742

745

742

758

734

731 

734

23,563

760

46,740

Sept.

734 

738

742

734

751

724

742

752" 745

754

751

724 

717

754

758

751

724

717

751

751

 728

720

717

728

731

731

728

724

72C

751

21,902

75C

43,44C

Calendar year 1955 : Max 1,950 Mln 428 Mean 747 Ao-ft 540,600

water year 1955-56: Max 7,860 Mln 710 Mean 1,586 Ao-ft 1,151,000

 Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 30T

Cherry Creek near Hetch Hetchy, Calif.

Location. Lat 38°00', long 119°54', in SWi sec. 28, T, 2 N., R. 19 E., on left bank 

2.5 miles northwest of Lake Eleanor Dam, 4 miles upstream from Eleanor Creek, and 

7.5 miles northwest of Hetch Hetchy.

Drainage area. Ill sq mi.

Records available. May to October 1901, April 1910 to December 1955 (discontinued). PubJished as "at Eleanor Trail Crossing 1901 and as "near Sequoia" 1910-18.

Gage. Water-stage recorder. Altitude of gage is 4,500 ft (from topographic map). Prior 

!fo Nov. 1, 1913, staff gage at site 800 ft downstream at different datum. Nov. 1, 

1913, to Dec. 1, 1915, water-stage recorder at site 25 ft upstream at same datum.

Average discharge. 45 years, 369 cfs (267,100 acre-ft per year).

Extremes. Maximum discharge during period not determined; minimum daily, 3.2 cfs Oct. 8, 

 9T~Hov. 11, 12.

1910-55: Maximum discharge, 18,100 cfs Dec. 11, 1927 (gage height, 25.1 ft, from

floodmarks), from rating curve extended above 7,700 cfs on basis of velocity-area

studies; no flow Sept. 6-12, 1910.

Remarks. Records good. No diversion above station. Release from five small reservoirs 

(total capacity, 2,990 acre-ft) has caused increased summer flow since 1931.

Cooperation. Water-stage-recorder graph and three discharge measurements furnished by 

city and county of San Francisco.

Rating table, Oct. 1 to Dec. 21, 1955 (gage height, In feet, and discharge,

In cubic feet, per second) 

(Shifting-control method used Nov. 19-22, Nov. 26 to Dec. 21)

1.0

1.1

1.2 

1.4 

1.6 

1.8

2.8

5.3

9.0

18

32

51

2.0 

2.2 

2.5 

3.0 

4.0 

5.0

82

128

242

465

900

1,430

Discharge, In cubic feet per second, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8 

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

3.8

3.8

3.8

3.6

3.4

3.4

3.6

3^,2 

3.2

*3.6

3.8 

3.8

3.8

4.4

4.7

4.4

4.7

4.7

12

13.

7.0

3.6

6.0

6.4

4.7

4.7

7.0

8.6

7.4

7.0 

7.4

164.5

5.31

326

Nov.

6.7

7.0 -5.6

6.4

6.7

*3.8

3.6

3.6 

3.4

3.4

*£. 

3.2

3.8

9.2

32

45

48

66

95

250

*353

78

63

54

60

74

103

88

73 

61

1,612.6

53.8

3,200

Dec.

77

99

82

66

68

396

179

156 

420

168

164 

179

128

134

131

126

144

131

386

1,160

1,000

-

-

-

-

-

-

-

-

-

"

Jan. Feb. Mar. Apr. May June July Aug. Sept.

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

Sak discharge (base. 2.400 cfs). Ho peak above base. 

Discharge measurement made on this day.
308 SAN JOAQUIN RIVER BASIN

Lake Eleanor near Hetch Hetchy, Calif.

Location. La t 37°58', long 119 °53' , In NWij sec . 3, T. 1 N. , R. 19 E. , on downstream side 

of dam on Eleanor Creek, 720 ft from left bank, 1.7 miles upstream from Miguel Creek, 

and 5.5 miles northwest of Hetch Hetchy.

Drainage area. 79 sq mi, approximately.

Records available . October 1919 to September 1930 (daily gage heights; also summary of 

yearly contents in WSP 881), October 1930 to September 1956.

Gage. Water-stage recorder. 

county of San Francisco).

Datum of gage is at mean sea level (levels by city and 

Prior to Oct. 1, 1927, staff gage at same site and datum.

Extremes .--Maximum contents during year, 29,600 acre-ft Dec. 23 (elevation, 4,663.5 ft); 

minimum, 861 acre-ft Sept. 30 (elevation, 4,626.7 ft).

1919-56: Maximum contents, 31,000 acre-ft (revised) Dec. 11, 1937, from capacity 

table then in use (elevation, 4,663.4 ft); no usable contents at times in 1921, 1929-30.

Revisions. --The maximum contents for the water year 1938 has been revised to 31,000 

acre-ft Dec . 11, 1937 (elevation, 4,663.4 ft), superseding fugure published in WSP 843, 

861.

Remarks. Reservoir is formed by multiple-arch dam completed in 1918; storage began June 

S3~T~1918. Usable capacity, 26,100 acre-ft between elevations 4,620.9 ft (natural outlet of old lake) and 4,660.0 ft (top of 5-foot f lashboards ) above mean sea level. 

Water is released down Eleanor Creek for power development and domestic supply as part 

of Hetch Hetchy system of city and county of San Francisco.

Cooperation . --Water-stage-recorder graph furnished by city and county of San Francisco.

Capacity table, water year 1955-56 (elevation, In feet, 

and contents, In acre-feet)

4,626 

4,628 

4,63O 

4,632 

4,634 

4,636 

4,638 

4,640 

4,642 

4,644

550

1,480

2,450

3,580

4,700

5,960

7,330

8,710

10.3OO

11,900

4,646 

4,648 

4,650 

4,652 

4,654 

4,656 

4,658 

4,66O 

4,662

13,500 

15,300 

17,OOO 

18,800 

20,600 

22,400 

24,300 

26,100 

28,100

Contents, In acre-feet, at 12 p.m., water year October- 1955 to September 1956

Day

1 

Z

3

4

5

6

7

a

9

10

11

1Z

13

14

15

16

17

18

19

ZO

Zl

ZZ

23

Z4

25

26

Z7

28

Z9

30

31

(t)

(*)

Oct.

9.100 

8,870

8,570

8,360

8,160

7,880

7,68O

7,400

7,130

6,850

6,640

6,370

6,160

5,89O

5,610

5,270

5,040

4,820

4,540

4,310

4,030

3,860

3,630

3,460

3,240

3,070

2,960

2,790

2,620

2,400 

2J260

4,629.6

-7,080

Nov.

2.060 

1,920

1,720

1,580

1,480

1,430

1,330

1,290

1,190

1,14O

1,090

1,040

1,040

1,040

996

996

996

950

906

996

1,240

1,29O

1,330

1,330

1,330

1,330

1,380

1,430

1,480

1,530

4,628.1

-730

Dec.

1.670 

1,820

1,870

1,920

2,060

Z,900

3,300

3,750

4.4ZO

4,820

5,100

5,340

5,540

5,750

5.8ZO

5,890

6,090

6,370

6,990

8,570

10,300

24,100

28.100

26,100

25,200

25,500

24,800

24,50O

24,300

23*400

4,657.0

+21,870

Jan.

25.000 

22,500

22,100

21,6OO

21,200

2O,8OO

20,4OO

2O,OOO

19,400

19,000

18,600

18,300

18.100

18,200

19,900

21,300

21,600

21,500

21,200

21,000

20,900

21,500

22,200

22,100

22,600

22,900

2Z.800

22,400

22,100

21, 600 

21,100

4,654.6

-Z,300

Feb.

20.700 

2O.1OO

19,600

19.1OO

18.60O

18,2OO

18,600

18,900

19,200

19,100

18,500

17,900

17,500

17,400

17,300

17,100

16,900

16,700

16,600

16,400

16,200

16,100

16,000

16,000

15,900

15,700

15,500

15,300

15^200

4,647.9

-5,900

Mar.

15. OOP 

14,9OO

14,700

14,700

14,600

14,400

14,100

14,000

13,8OO

13,600

13,500

13,300

13,100

12 . 900

1Z.900

12,900

13,100

13,500

13,600

13,700

13,700

13,700

13,700

14,000

14,300

14,600

14,600

14,700

14,700

14,900 

15.000

4,647.7

-200

Apr.

14,900 

14.800

15,300

15 , 40O

15,900

16,200

16,300

16,700

17,900

18,400

18,700

19,000

19,400

19,800

20,100

2O, 600

21,100

21,4OO

21,500

21,900

22,200

23,000

24,500

26,000

26.700

25,900

25,100

24,200

23,800

23,700

4,657.4

+8,700

May

23,70O 

23,900

24.3OO

25 . lOO

24,600

24,300

24,100

23.8OO

23,900

23,600

Z3,600

23,400

23,200

25.000

23,100

23,400

25,8OO

24,100

24,200

24,500

24,800

25,000

25,000

25,OOO

24,900

24,800

24,700

25,000

24,900

24,50O 

24.400

4,658.1

+700

June

24,300 

24,300

24,500

24,5OO

24,100

Z3.900

23,900

23,900

24,OOO

24,000

24,100

24,000

23,900

23,900

24,200

24,300

24,400

24,500

24,500

24,500

24,400

24,500

24,500

24,500

24,5OO

24,500

24 . 600

24,600

24,500

24,400

4,658.1

0

July

24.20O 

24,100

Z4,100

24,OOO

24,000

24,000

24,000

24,100

Z4,10O

Z4,000

24,000

25,900

Z3,400

22,7OO

22,000

21,300

20,700

20,000

19,400

18,800

18,200

17,500

16,900

16,300

15 , 600

15,000

14,300

13,500

12,900

12 , lOO 

11,400

4,643.4

-13,000

Aug.

10.600 

9.9OO

9,1OO

8,430

7,740

7,470

7,47O

7,400

7,400

7,350

7,260

7,190

7,190

7,150

7,060

7,060

6,990

6,9ZO

6,850

6,780

6,640

6,570

6,160

5,820

5,540

5,270

5,040

4,870

4,870

4,870 

4^820

4,634.2

-6,580

Sept.

,820 

,820

,8ZO

,820

,760

,760

,76O

,700

,700

,700

,700

,650

,650

,650

,420

,080

,030

,030

,970

,970

,750

,410

,070

,680

,550

,010

,620

,140

,190

- 

4,626.7

-5,960

Calendar year 1955.................... * +10,600

Water year 1955-56.................... * -8,480

t Elevation, In feet, at end of month. 

* Change In contents in acre-feet.
SAN JOAQUIN RIVER BASIN 309

Eleanor Creek near Hetch Hetchy, Calif.

Location. Lat 37°58', long 119°53', in SW^ sec. 3, T. IN., R. 19 E., in Yosemite

National Park, on right bank 0.6 mile downstream from Lake Eleanor Dam, 1.1 miles upstream from Miguel Creek, and 5.5 miles northwest of Hetch Hetchy.

Drainage area. 80 sq mi, approximately.

Records available. June to October 1901, November 1909 to September 1956. Published as 

"at Eleanor Trail Crossing" 1901 and as "near Sequoia" 1910-18.

Gage. Water-stage recorder and concrete control. Altitude of gage is 4,600 ft (from 

topographic map). June to October 1901 staff gage at site 1.5 miles upstream at different datum. November 1909 to November 1915 staff gage and water-stage recorder at 

site 1 mile upstream at different datum.

Average discharge.--46 years (1910-56), 222 cfs (160,700 acre-ft per year).

Extremes. Maximum discharge during year, 11,500 cfs Dec. 23 (gage height, 14.80 ft), 

from rating curve extended above 2,000 cfs as explained below minimum daily,.1.6 cfs 

Feb. 8, 9.

1909-56: Maximum discharge, 11,700 cfs Nov. 19, 1950 (gage height, 14.95 ft), from 

rating curve extended above 2,000 cfs on basis of velocity-area studies; no flow at 

times during 1910, 1930-31, 1933.

Remarks. Records excellent. No diversion. Flow regulated by Lake Eleanor beginning in 

1918 (see preceding page).

Cooperation. Water-stage recorder graph and nine discharge measurements furnished by 

city and county of San Francisco.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 3O

1.6

1.7 

2.0

52

92

172

4.0 

5.0 

6.0 

8.0 

12.0

370

810

1,490

3,440

7,920

1.2

1.3

1.4

1.5 

1.7 

2.0 

2.3

1.0

2.8

5.3

8.5

18

37

69

2.6 

3.0 

3.5 

4.0 

5.0 

6.0 

8.0

107

164

272

434

890

1,590

3,440

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

120

120

118

118

120

120

120

120

118

120

122 120"

120

120

118

120

122

120

120

120

118

98

88

88

86

85

60

57

79

79

78

3,312

107

6,570

Nov.

77

77

77

77

49

38

38

37

*37

26

20

20

20

20

20

20

20

20

20

a20

a20

a2O

a20

a20

a20

a20

a2O

a20

a20

a2O

933

31.1

1,850

Dec.

a22

a22

22

22

a25

a25

a!8

38 ,

*49

26

59*7 _ 7

40

64

69

82

68

26

54

29

20

56

7.490

2,820

1,480

1,290

1,090

700

504

*532

604

17,353. 7

560

34,420

Jan.

534

5l2

500

492

488

484

480

480

476

472

472

472

468

472

476

484

488

488

488

488

484

488

496

496

512

521

512

504

496

492

*488

15,203

490

30,150

Feb.

484

484

480

484

476

359

1.8

1.6

1.6

211

508

5QQ

362

239

239

239

236

236

234

232

229

229

229

229

227

224

224

*222

222

- - -

8,043.0

277

15,950

Mar.

222

220

220

218

218

249

267

267

264

264

264

264

264

267

269

188

140

140

237

306

381

442

442

442

445

445

445

*445

445

442

442

9,564

309

18,970

Apr.

438

326

31

98

79

236

453

333

79

344

365

209

89

85

76

76

77

340

496

496

496

351

81

107

485

1.290

1,080

1,010

740

632

10,998

367

21,810

May

614

*645

725

1,400

1,260

1,000

875

740

70O

654

614

582

542

529

529

538

582

686

805

840

1,060

1,300

1,400

*1,350

1,310

1,270

1,190

748

904

1,130

1,000

27,522

888

54,590

June

950

885

875

932

860

750

690

695

720

735

770

740

705

586

.574

381

409

464

542

538

488

472

492

504

492

457

484

542

542

480

18,554

618

36,800

July

. 388

324

278

246

232

218

211

215

220

220

207

183

402

546

521

508

504

500

496

492

492

484

484

48O

472

468

464

461

453

445

442

12,056

389

23,910

Aug.

434

42T

423

416

409

167

29

29

29

29

29

30

30

30

30

30

30

30

29

29

90

124

127

126

130

131

131

80

12

6.2

5.9

3,652.1

118

7,240

Sept.

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.6

5.6

5.6

107

149

52

2.2

ill

1.8

*104

150

149

148

149

149

149

148

96

84

1,721.5

57.4

3,410

Calendar year 1955: Max 7,490 Min 7.7 Mean 195 Ac-ft 141,200

Water year 1955-56: Max 7,49O Min 1.6 Mean 352 Acrft 255,700

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage.

493801 O - 59 - Zl
SAN JOAQUIN RIVER BASIN

South Fork Tuolumne River near Oakland Recreation Camp, Calif.

Location --Lat 37°49' 16". long 120°00'48", in SEfsec. 29, T. 1 S., R 18 E on right bank 

southwest of foJ?aUS^'R 75 ft a"*"* from highway bridge on Big Oak F?at fiSadl 0 5 m?le 

D in«J?«~o s-7 c Recreation Camp, and 0.6 mile upstream from Middle Tuolumne River. ** * c^iiiei&g a.rgct ~"o i b so mi . ~~ Records available . March 1923 to September 1956. (from

discharge. -33 years, 93.5 cfs (67,690 acre-ft year) 

---Maximum discharge during year, 11,900 cfs Dec. 23 (gage height 10 9 ft from S °

.

RPV?^: M^n , discharge, thafof Dec. 23, 1955; minimum, 0.3 cfs Aug 23 1934 

as lnliiT^;h^^iif^reS.0£1 maximuin discharge 'for some water 'years have been revised 

paplrs^nScated ^ l6< They suPersede fiS^es Published in the water-supply

WSP

591

611

631

651

671

691

706

736

791

811

831

843,861

981

1041

Water 

. year

1923

1925

1926

1927

1928

1929

1930

1932

1935

1936

1937

1938

1943

1945

Date

Apr. 6, 1923

Feb. 6, 1925

Apr. 6, 1926

Feb. 18, 1927

Mar. 25, 1928

June 16, 1929

Feb. 22, 1930

Dec. 28, 1931

Apr. 8, 1935

Feb. 22, 1936

Feb. 13, 1937

Dec. 11, 1937

Jan. 21, 1943

Feb. 2, 1945

Discharge 

(cfs)

3,140

2,440

1,040

2,520

2,390

970

715

1,380

3,100

1,440

2,630

9,000

4,520

5,220

Gage height 

(feet)

7.03

6.45

5.05

6.61

6.50

4.85

4.45

5.45

7.07

5.53

6.70

10.00

8.00

8.38

Remarks. Records good. No storage or diversion.

Cooperation. Water-stage-recorder graph and eight discharge measurements furnished by city

and county of San Francisco. 

Revisions. Revised figures of discharge, in cubic feet per second, for the water years

1923, 1926-28, 1937-38, superseding those published in WSP 571, 631, 651, 671, 831, 843,

861, are given herewith:

Date

1923

Apr. 5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Discharge

288

1,450

470

335

295

655

470

365

350

320

320

335

350

320

295

308

282

260

Date

1923-Con.

Apr. 23

May 2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Discharge

252

262

280

290

335

365

415

432

450

432

398

380 

365

380

415

432

415

380

Date

1923-Con.

May 19

20

21

22

23

24

25

26

27

1926

Apr. 5

6

7

8

9

10

15

Discharge

335

320

270

280

308

350

335

290

258

470

630

350

555

308

250

262

Date

1926-Con.

Apr. 16

17

24

25

26

1927

Feb. 18

19

21

22

Apr. 1

2

3

4

5

25

26

Discharge

268

260

255

265

260

1,090

383

338

352

495

586

745

480

355

372

406

Date

1927-Con.

Apr. 27

28

29

30

1928

Mar. 24

25

26

27

28

29

1937

Feb. 6

14

Dec. 11

Discharge

383

348

383

362

430

1,480

942

1,120

470

330

1,160

1,410

3,680

Month

May. .............................

Water year 1936-37 .............

Water year 1937-38. . ...........

Cfs -days

-

.

-

_

-

44,183.0

93,313

Maximum

450

630

1,090

1,480

1,410

3,680

Minimum

204

4.6

8.5

5.0

5.0

18

7.5

11

Mean

332

252

57.1

105

69.2

63.8

258

121

256

Runoff In 

acre-feet

20,400

15,000

41,400

75,700

46,300

14,340

87,640

185,100

evised peak d 

s; Mar. 13 (3:

discharge. 1957-58; Dec. 11 (4 p.m.) 9,000 cfs; Mar. 2 (10 a.m.) 4,180

30 a.m.) 2,660 cfs.
SAN JOAQUIN RIVER BASIN 311 

South Pork Tuolumne River near Oakland Recreation Camp, Calif.--Continued

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

o.e

1.0 

1.2 

1.6 

2.0 

2.5 

3.0

5.3

8.0

11

22

44

94

165

3.5 

4.0 

5.0 

6.0 

7.0 

8.0 

10.0

280

455

980

1,850

3,000

4,520

9,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

5.4

5.5

573

5.3

5.4

5.6

5.4

5.3

5.3

5.4

5.7

5.8

5.6

5.3

5.4

5.4

5.4

5.4

6.1

7.2

fc*

7.0

6.7

6.5

*6.3

6.6

6.9

6.9

6.7

6* 6

185.5

5.98

368

Nov.

"577 6.5 

7.0

7.0

6.9

6.9

7.0

7.0

6.9

6.7

6.6

6.6

8.5

11

10

11

14

12

13

14

«

14

bll

b9

blO

12

12

13

12

329.3

11.0

653

Dec.

50 

34

19

bi|

bit

76

54

33

76

46

30

25

24

22

21

20'

20

22

212

205

114 904

*6i960

3,080

950

1,520

992

508

375

301

271

15,992

516

31,720

Jan.

238 

219

198

182

215

202

182

180

169

163

167

169

165

235

487

*629

368

292

256

253

259 

286

625

395

896

1.190

8§6

518

403

347

313

11,067

357

21,950

Feb.

HI

243

231

222

208

198

190

180

176

173

169

165

160

155

148

145

144

138

136

T53

240

174

158

155

148

146

146

5,157

178

10,230

Mar.

144 

144

148

150

150

144

134

134

134

136

138

*136

134

134

133

136

144

145

153

148

153 

160

171

188

200

198

180

178

188

196

200

4,831

156

9,580

Apr.

184 

162

153

150

1ST

163

184

198

217

238

215

198

178

173

176

192

200

215

222

236

256 

250

292

310

325

*407

IsSi"

295

277

274

6,825

228

13,540

May

231 1FI5

340

645

435

364

375

340

399

340

361

340

301

280

292

325

334

358

368

361

455 

495

471

431

403

391

368

337

334

340

334

11,492

371

22,790

June

m310

289

250

233

240

243

240

233

215

200

190 180

165

146

150

146

144

132

122 

119

116

107

100

96

93

88

80

15

5,326

178

10,560

July

63

60

56

56

53

51

49

47

46

44

43

42

40

40

38 *36

35

35

33 

32

30

30

29

30

30

28

26

25

2i

1,286'

41.5

2,550

Aug.

M24

23

23

22

22

21

21

20

20

20

20

19

19

*19

19

19

18

18

18 

17

17

1§

T§

16

16

16

16

16

16

595

19.2

1,180

Sept.

15 

14

14

14

14

14

13

13

14

IS

15

14

14

14

14

13

13 is12

14

14 

14

13

12

12

*12

12

14

13

12

404

13.5

801

Calendar year 1955: Max 6,960 Mln 4.5 Mean 88.5 Ac-ft 64,110

Water year 1955-56; Max 6,960 Mln 5.3 Mean 173 Ao-ft 125,900

Peak discharge (base. 570 efs). Dec. 23 (6 a.m.) 11,900 cfs (10.9 ft): Dec. 26 (1:30 p.m.) 2,790 

cfs (6.83 ft); Jan. 15 (10:30 p.m.) 1,030 cfs (5.07 ft); Jan. 26 (5 p.m.) 2,530 cfs (6.62 ft); 

Apr. 26 (4 p.m.) 443 cfs (3.97 ft); May 4 (7 a.m.) 818 cfs (4.73 ft); May 22 (10:30 p.m.) 685 cfs 

(4.49 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.
312 SAN JOAQUIN R'lVKR BASIN

Middle Tuolumne River at Oakland Recreation Camp, Calif.

Location. Lat 37°49i40", long 120°00'40", In NVf£ sec. 28, T. 1 S., R. 18 E., on left bank

 1,000 ft downstream from Oakland Recreation Camp, 0.5 mile upstream from South Pork 

Tuolumne River, and 4 miles east of Buck Meadows Post Office.

Drainage area. 71.0 sq mi.

Records available.--November 1916 to September 1956. November 1916 to September 1932,

 published as Middle Pork of Tuolumne River near Buck Meadows and October 1932 to September 1940, published as "near Buck Meadows."

Gage.-r-Water-stage recorder. Altitude of gage is 2,800 ft (from topographic map). 

Average discharge. 39 years (1917-56), 74.3 cfs (53,790 acre-ft per year).

Extremes. Maximum discharge during year, 4,920 cfs Dec. 23 (gage height, 11.75 ft, from 

riooa profile, 11.05 ft, from inside floodmarks), from rating curve extended above 

1,400 cfs on basis of slope-area determination of peak flow; minimum, 0.3 cfs Oct. 1-5.

1916-56: Maximum discharge, that of Dec. 23, 1955; no flow Sept. 4-14, 1924, 

Aug. 12 to Oct. 5, 1931, Sept. 11-17, 1934.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Small diversion above station for Irrigation.

Cooperation."Water-stage-recorder graph and seven discharge measurements furnished by 

city and county of San Francisco.

Revisions (water years).--WSP 1395: 1919(M), 1938(M), 1951(P).

Rating tables, water year 1955-56, except periods of ioe effect (gage

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Sept. 2-26)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

0.53 

.7 

.9

1.1 

1.3 

1.5 

1.7

0

1.0

3.2

6.2

10

15

23

2.0 

2.5 

3.0 

4.0 

5.0 

6.0

38

75

123

311

545

825

0.9 

1.0 

1.2 

1.5 

2.0 

2.5 

3.0

4.0

5.1

8.4

16

36

68

126

3.5

4.0

5.0

7.0

9.0

11.0

11.5

220

332

580

1,200

2,200

3,920

4,560

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

Z

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.3

is

.3

.3

.4

.4

.4

.4

.5

.5

.6

.6

.6

.6

.5

.5

.5

.7

1.1

1.2

1.5

1.6

1.5

1.5

 1.5

1.6

1.7

1.7

ilB

1*8

27.2

0.88

54

Nov.

ti

1.9

1.9

2.0

2.1

2.1

2.1

2.1

2.0

2.0

1.9

4.3

6.0

5.6

5.7

9.0

8.4

8.0

9.0

~9.4 20

5.9

b4.3

4.0

4.2

3.8

3.8

4.0

3.8

142.9

4.76

283

Dec.

27 

14

6.6

b5

J.O

52

28

24

43

32

19

15

13

11

10

9.6

9.2

22

137

95

60

*654

«4,000

1,060

600

1,000

500

300

250

204

188

9,334.4

301

18,510

Jan.

172 

158

144

136

182

151

137

134

129

122

122

122

118

TfS

357

479

301

238

208

204

206

244

512

313

*543

617

35T

310

253

229

_ 208

7,676

248

15,230

Feb.

186 

T72

168

160

155

147

140

136

128

126

123

122

120

118

115

107

112

109

107

106

103

T58

162

125

115

113

106

106

106

3,701

128

7,340

Mar,

102 

104

106

106

106

98

97

99

97

98

98

*95

95

95

93

95

100

104

109

108

113

120

131

149

164

170

158

156

170

184

196

3,716

120

7,370

Apr.

176 

149

140

134

T3T

151

180

200

227

257

224

204

184

176

170

182

188

202

210

231

249

246

299

342

366

*412

357

304

290

299

6,866

229

13 , 620

May

308 

342

395

756

567F

458

438

385

412

358

366

344

315

'32? 301

382

422

435

500

470

628

714

723

684

633

633

600

558

555

562

572

15,131

488

30,010

June

540 

535

550

52T

460

405

430

445

445

432

400

*366

349

327

301

277

279

282

279

231

210

204

194

182

160

155

147

137

123

106

9,476

316

18,800

July

89 

83

80

74

70

66

62

57

54

51

48

45

43

42

40

38

*37

35

37

36

34

32

32

31

31

~36 104

29

26

24

22

1,488

48.0

2,950

Aug.

22 

25

20

19

19

18

17

16

15

15

15

13

13

12

12

12

12

12

11

10

10

9.7

9.5

8.4

8.6

9.1

8.4

7.5

7.3

7.1

7_.0

395.6

12.8

765

Sept.

6.8

6.6

6.4

6.2

6.0

5.8

5.7

5.7

5.7

6.4

7.1 THJ

6.4

6.2

5.7

5.6

5.4

5.2

4.7

4.8

5.1

5.0

5.0

4.2

4.0

*4.0

4.2

4.4

4.4

4.4

164.1

5.47

325

Calendar year 1955: Max 4,000 Mln 0.1 Mean 63.8 Ao-ft 46,190

Water year 1955-56: Max 4,000, Mln 0.3 Mean 159 Ao-ft 115,300

Peak discharge (base, 570 el's) . Dec. 23 (time unknown) 4,920 cfs (11.75 ft)j Jan. 15 (10 p.m.)

(5.46 ft); Janl 23 (5130 a.m.) 669 cfs (5.33 ft)j Jan. 26 (6 p.m.) 1,070 cfs (6.68 ft)j 

May 4 (8i30 a.m.) 906 ofa (6.12 ft)j May 22 (12 p.m.) 909 cfs (6.13 ft).

708 cfs

Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 23-29; discharge estimated on basis of 1 discharge measurement, 

weather records, and records for South Pork Tuolumne River near Oakland Recreation Camp'.
SAN JOAQUIN RIVER BASIN 313

Woods Creek near Jacksonville, Calif.

Location. Lat 37°51'30", long 120°23'45", in SE^ sec. 11, T. 1 S. , R. 14 E., on right 

bank 200 ft downstream from Blue Gulch, 1.5 miles upstream from mouth, and 1.5 miles 

northwest of Jacksonville.

Drainage area. 98.4 sq mi.

Records available. October 1925 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 653.65 ft above mean sea level, unadjusted. 

Prior to Oct. 1, 1947, at datum 2.00 ft higher.

Average discharge.--31 years, 61.3 cfs (44,380 acre-ft per year); median of yearly mean 

discharges, 55 cfs (39,800 acre-ft per year).

Extremes.--Maximum discharge during year, 14,400 cfs Dec. 23 (gage height, 14.66 ft), from 

rating curve extended above 2,400 cfs on basis of slope-area detfirmination of peak flow; 

no flow during several months.

1925-56: Maximum discharge, that of Dec. 23, 1955; no flow during parts of most 

years.

Remarks.--Records good except those for periods of no gage-height record and those above 

1,000 cfs, which are fair. Tuolumne Canal (see p. 306 ) diverts water from Stanislaus 

River basin into Woods Creek basin for power, irrigation, and domestic supply in the 

vicinity of Sonora upstream from station. Some of diverted water, up to 2 cfs, returns 

to Stanislaus River basin, and up to 4 cfs, enters Tuolumne River basin upstream from 

Woods Creek.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.3

1.4

1.5 

1.7 

1.9 

2.1 

2.4 

3.0

4.0

5.0

6.0

8.0

10.0

12.0

13.0

14.0

234

440

765

1,660

2,870

5,300

7,700

11,300

1.3

1.4

1.5

1.6

1.7

1.8 

2.0 

2.3 

2.7

.1

.3

1.0

2.0

3.5

8.0

21

47

3.0 

3.5 

4.0 

5.0 

6.0 

7.0 

9.0 

10.0

74

134

218

434

750

1,290

2,960

4,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Tota:

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

*0

0

0

0

0

0

0

*0

*0

*0

0

0

.2

5.5

5.3

3 1

13

7.8

6.9

7.2

13

10

8.4 

10

7.5

7.2

6.9

6.9

7.5

5.8

132.2

4.41

262

Dec.

73

58

20

12

10

385

97

36

139

53

28

20

16

14

12

11

12

11

300

*493

207

2,320

*a9.450 

*a3,340

a738

a2,300

*al,02Q

340

168

146

338

22,147

714

43,930

Jan.

240

394

196

154

951

*422

264

319

204

179

168

*131

116 450-

1.820

826

331

232

186

218

209

454

1,030 

358

687

1,480

903

405

284

231

193

14,040

453

27,850

Feb.

167

149

138

131

117

114

110

105

96

93

92

90

87

84

*82

76

80

84

79

84

81

81

491 

223

244

292

209

160

157

3,996

138

7,930

Mar.

134

TTf

110

103

101

101

93

92

87

84

80

78

76

*74

72

69

68

67

70

68

65

64

62

61

60

58

56

55

58

55

57

2,395

77.3

4,750

Apr.

72

64

66

56

54

66

72

50

49

*46

87

112

82

99

88

74

67

58

54

51

48

46

44 

44

44

87

114

75

65

71

2,005

66.8

i 3,980

May

59

41

47

68

40

37

47

53

250

*134

92

78

71

63

58

53

50

53

53

49

48

46

42

41

39

36

a35

a34

a32

a31

a d-OW ^O 

1,810

58.4

3,590

June

a29

a28

a26

a25

a24

*23

19

18

7.8

5.1

4^9

6.8

7.8

10

19

39

26

19

16

15

14

14

12 

10

10

10

9.2

7.8

6.8

5.1

467.3

15.6

927

July

4.5

4.9

5.1

4.9

5.3

6.0

6.2

5.8

5.1

5.1

4.7

*4.3

4.1

3.7

3.4

3.7

3.9

2.8

1.5

.9

.6

.4

.3 

.2

.2

.1

.1

.1

.1

.1

.1

88.2

2.85

175

Aug.

0.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

t>

*0

0

0

0

0

0

0.5

0.02

1.0

Sept.

0

0

0

0

0

0

0

.0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

.1

1±.4

.3

.3

.3

1.8

0.06

3.6

Calendar year 1955: Max 9,430 Min 0 Mean 86.5 Ac-ft 62,660

Water year 1955-56: Max 9,430 Min 0 Mean 129 Ac-ft 93,400

Peak discharse (base, 900 cfs). --Dec. 23 (about 2 a.m.) 14.400 cfs (14.66 ft); Dec. 26 (time unknown) 6,140 cfs (11.2 ft); Jan. 5 (10 a.m.) 1,490 cfs (7.30 ft); Jan. 15 (8 p.m.) 4,750 cfs (10.38 

ft); Jan. 22 (12 p.m.) 2,470 cfs (8.51 ft); Jan. 26 (3 p.m.) 2,960 cfs (9.00 ft); Feb. 23 (6 a.m.)

920 cfs (6.36 ft) .

* Discharge measurement or observation of no flow made on this day.

a No gage-height record) discharge estimated on basis of records for San Domingo Creek near San

Andreas and South Pork Calaveras Creek near San Andreas.
314 SAN JOAQUIN RIVER BASIN

Don Pedro Reservoir near La Grange, Calif.

Location.--Lat 37°42'48", long 120°24'14", In SW£ sec..35, T. 2 S., R. 14 E., 300 ft from 

left bank on upstream face of Don Pedro Dam on Tuolumne River, 1 mile downstream from 

Rogers Creek, and 5.5 miles upstream from La Grange.

Drainage area. 1,539 sq ml.

Records available. October 1924 to September 1930 (daily gage heights; also summary of 

yearly contents In WSP 881), October 1930 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Turlock Irrigation District). Prior to Feb. 1, 1941, staff gage at same site and datum.

Extremes. Maximum contents during year, 291,200 acre-ft Aug. 6 (elevation, 605.8 ft); minimum, 47,200 acre-ft Oct. 7 (elevation, 495.3 ft).

1924-56; Maximum contents, 292,100 acre-ft June 13, 1937 (elevation, 606.1 ft); minimum, 29,200 acre-ft Sept. 1-3, 5, 1934; minimum elevation, 475.0 ft Sept, 1, 2, 1934.

Remarks. Reservoir is formed by concrete gravity-type dam, completed about Jan. 1, 1923; 

storage began Nov. 14, 1922. Total capacity, 290,400 acre-ft at elevation 605.55 ft 

(top of drum type spillway gates), of which 30,000 acre-ft below elevation 476 ft 

(mutually agreed-upon minimum) Is not available for release. Water passes through 

powerplant at dam and down Tuolumne River to La Grange Dam, 4 miles downstream, where 

it Is diverted Into Turlock and Modesto Canals for irrigation. This reservoir is operated Jointly by Turlock and Modesto Irrigation Districts. Records show total contents 

at 12 p.m.

Cooperation. Water-stage-reoorder graph furnished by Turlock and Modesto Irrigation 

Districts.

Capacity table, water year 1955-56 (elevation, In feet, 

ana capacity, in acre-feet)

PC 

it

495

505

520

535

550

46,900

57,900

78,100

103,400

135,800

565

580

595

606

172,500

213,400

257,500

291,800

Contents, in acre-feet, at 12 p.m., water year October 1955 to September 1956

Cay

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

if

Oct.

48,300 

48,600 

48,200 

47,800 

47,600

47.400 

47,400 

47,900 

48,500 

48,300

48,400 

48,500 

48,600 

48,500 

49,400

50,600 

51,300 

52,100 

52,800 

53,600

54 i 500 

55,700 

57,100 

57,800 

58,500

59,200 

60,000 

60,900 

61,700 

62,900 

65,700

509.6 

+15,400

NOV.

63,700 

63,500 

63,400 

63,300 

63,800

64,900 

64,600 

63,800 

63,300 

62,900

62,200 

61,900 

62,000 

61,200 

61,000

60,200 

60,100 

60,000 

66,766 

62,000

62,500 

63,300 

63,100 

64,600 

64,600

65,000 

66.100 

66,100 

66,100 

65,900

511.3 

+2,200

Dec.

66.200

66,900 

67,400 

68,500 

68,100

70,300 

72,100 

72,400 

73,500 

75,200

76,500 

76,100 

75,500 

74,600 

74,000

73,500 

73,400 

73,900 

75,700 

81,000

85,100 

118,600 

269,800 

286,100 

281,700

287,400

280,100 

279,800 

277,000 

272,300 

267,900

598.4 

+202,000

Jan.

262,400

257,200 

250,200 

243,300 

241,300

235,900 

229,500 

223,400 

216,800 

209,400

201,500 

193,200 

190,800 

190,500 

198,200

204,000 

204,300 

198,700 

193,000 

187,800

186,700

188,300 

201,000 

200,400 

204,300

216,200 

224,300 

222,800 

218,200 

212,500 

206,000

577.4 

-61,900

Feb.

200,400

197,100 

195,200 

192,700 

190,200

189,200 

187,500 

187,000

187,300 

187,300

188,600 

192,100 

195,700 

197,100 

196,500

194,300 

191,900 

190,000 

189,700 

189,400

189,200 

188,600 

191,600 

192,400 

193,000

194,100 

193,500 

192,100 

190,800

571.9 

-15,200

Mar.

189.400

169,200 

188,900 

188,300 

188,100

187,500 

186,700 

185,900 

185,400 

184,600

186,200 

187,800 

188,100 

188,100 

188,300

188,300 

187,300 

185,600 

183,800 

182,500

180,600 

179,000 

178,200 

178,200 

178,800

179,300 

179,300 

179,600 

179,800 

179,300 

177,500

566.9 

-13,300

Apr.

176,700 

177,200 

177,200 

176,700 

176,200

175,900

176,700 

177,500 

178,000 

178,500

180,100 

180,100 

178,800 

177,500 

175,900

175,900 

176,700 

178,500 

181,100 

183,800

186,700 

187,800 

187,300 

186,700 

187,300

191,600 

192,100 

192,400 

192,100 

193,000

 

572.7 

+15,500

May

195,200 

197,400 

200,100 

204,900 

205,400

204,000 

202,400 

199,800 

198,700 

196,800

194,100 

191,300 

189,400

189,400 

191,100

193,500 

195,400 

196,500 

198,200 

199,800

201,000 

201,800 

202,600 

203,200 

203,800

204,000 

204,300 

203,800 

204,000 

205,400 

205,200

577.1 

+12,200

June

204,600 

203,800

203,800 

204,900 

206,300

208,000 

206,300 

208,500 

213,600 

219,600

225,700 

229,200 

233,900 

237,100 

238,000

234,800 

232,100 

231,200 

230,700 

231,300

231,500 

231,000 

232,800 

238,300 

243,000

246,600 

249,900 

252,000 

253,800 

256,300

- 

594.6 

+51,100

July

259,900

264,200 

267,900 

270,100 

271,700

271,300 

270,700 

270,100 

269,500 

269,200

268,900 

270,400 

272,600 

274,800 

276,000

277 , 600 

278,900 

280,100 

282,300 

285,800

288,900 

290,500

290,200 

290,500 

290,500

290,500 

290,500 

290,500 

289,600 

289,600 

290,500

605.6 

+34,200

Aug.

290,800

289,900 

288,600 

288,900 

290,500

290,800 

290,200 

290,500 

289,900 

287,400

284,800 

282,600 

280,100 

277,300 

274,200

271,700 

268,900 

266,400 

263,600 

260,800

258,100 

255,400 

252,300 

249,300 

246,300

243 , 600 

240,400 

237,400 

234,500 

231,200 

228,000

585.1 

-62,500

Sept.

224,800

221,700 

218,500 

215,300 

211,900

208,500 

205,200 

201,800 

198,200 

194,600

191,100 

187,500 

183,500 

180,100 

176,700

174,600 

172,000 

170,000 

168,200 

166,400

164,400 

162,900 

161,100 

158,900 

156,700

154,700 

152,800 

150,800 

149,100 

147.000

554.7 

-81,000

Calendar year 1955................... * +182,100

Water year 1955-56................... t +98,700

t Elevation, in feet, at end of month. 

t Change in contents in acre-feet.
SAN JOAQUIN RIVER BASIN 315

Aug. 29, 

Apr. 1,

Tuolumne River above La Grange Dam, near La Grange, Calif.

Location. Lat 37°42i35", long 120°24'45", in NEir sec. 3, T. 3 S., R. 14 E., on left bank 

0.5 mile downstream from Don Pedro Dam, 3.5 miles upstream from La Grange Dam, and 

5 miles upstream from La Grange.

Drainage area. 1,540 sq mi.

Records available.--March 1915 to September 1956. August 1895 to September 1917 at La 

Grange Dam, 3.5 miles downstream, records equivalent if flow of Sierra and San Francisco Power Co.'s canal (abandoned in 1926) and Modesto and Turlock Canals is added 

to flow at La Grange Dam.

Gage. Water-stage recorder. Altitude of gage is 330 ft (from topographic map). 

T895, to Dec. 5, 1908, staff gage on bridge pier 2 miles below La Grange Dam. 

1908, to Mar. 18, 1915, staff gage on right bank 80 ft above La Grange Dam.

Average discharge. 61 years (1895-1956), 2,567 cfs (1,858,000 acre-ft per year), using 

1895-1916 records of combined flow of river and canals, and including Hetch Hetchy 

diversion to San Francisco.

Extremes. Maximum discharge during year, 41,700 cfs Dec. 24 (gage height, 34.00 ft); 

minimum daily, 66 cfs Oct. 30.

1895-1956: Maximum discharge, 61,000 cfs Dec. 8, 1950 (gage height, 43.8 ft); minimum daily, 2.1 cfs Dec. 27, 1922.

Remarks. Records excellent. Flow regulated by Don Pedro powerplant, Don Pedro Reservoir 

(see preceding page), Hetch Hetchy Reservoir (see p. 305), and Lake Eleanor (see 

p. 308). Tuolumne Canal (see p. 330) diverts water from the Stanislaus River basin 

into the Tuolumne River basin for power, irrigation, and domestic supply in the vicinity of Sonora upstream from station. Diversion through Hetch Hetchy aqueduct to San 

Francisco began Oct. 19, 1934; for present year it amounted to an average of 128 cfs.

Cooperation. Water-stage-recorder graph and 16 discharge measurements furnished by city 

and county of San Francisco. Records of chemical analyses for the water year 1956 

are given in WSP 1453.

Revisions (water years). WSP 843: 1917(M). WSP 881: 1897-1916, 1923-26 (yearly summaries only).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Feb. 3-18)

4.5 

4.7 

5.0 

5.5 

6.0 

7.0

Oct. 1 to Feb. 18

48 9.0

88 11.0

160 13.0

315 20.0

525 25.0

1,060 30.0

Feb. 19 to Sept. 30

2,500

4,300

7,100

17,600

25,600

34,200

8.4

9.0

10.0

12.0

14.0

15.0

1,600

2,080

2,980

5,100

7,800

9,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

£4

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

723 

515

909 805"

733

800

710

505

352

776

668

619

644

764

341

174

362

*315

293

306

251

174

113

291

282

290

283

262

153

66 

237

13,716

442

27,210

Nov.

666 

686

689

697

505

196

74T

918

909

*834

686

827

605

967

757

1.020

757

757

403

224

686

733

972

226

716

507

244

757

777

859

20,521

684

40,700

Dec.

981 

*885

663

396

1,010

1,020

918

1,130

1,060

732

530

1,260

1,380

1,430

1,350

1,350

1,080

797

1,380

1,130

1,210

1,910

5,960

*52.800

19,900

18,400

21,000

9,400

8,520

8,520 

8,450

156,552

5,050

310,500

Jan.

8,520 

8,520

8,600

8,680

8,680

8.700

8,700

8,640

8,440

8,360

8,340

8,320

4.920

5,040

6,700

7,790

*8,390

8,360

7,790

7,340

5,490

4,930

6,200

7,540

7,860

8,380

8,500

8,480

8,450

S,380

8,330

241,370

7,786

478,800

Feb.

7.460 

*5,660

4,680

4,700

4,700

 3,850

3,490

2,760

2,330

2,330

2,330

2,320

2.290

*3,090

3,480

3,480

3,480

3,200

2,300

*2,290

2,330

2,510

2,570

2,600

2,590

2,570

3,020

3,300

3,300

.

95,010

3,276

188,400

Mar.

3,020 

2,600

2,580

2,570

2.560

2,630

2,660

2,660

2,620

2,620

2,600

2,760

3,330

3,330

3,320

3,300

3,780

3,990

3,990

4,040

4,000

4,000

3,530

3,320

3, -2 70

3,300

3,380

3,370

3,900

4,810 

4 . 820

102,660

3,312

203,600

Apr.

*4,210 

3,330

3,370

3,360

3,330

3,350

3,340

3,290

3,290

3,350

3,350

3,750

4,050

4,040

3,970

3,250

2,820

2,600

2.590

2,620

2,650

3,370

4,060

4,100

3,770

3,950

5.570

4,900

4,820

3,900

108 ,0.60

5,605

214,500

May

5.550 

5,590

3,390

*4,940

7,070

7,250

7,240

7,280

*7,240

7,210

7,210

7,170

6,190

5,130

4,410

4,170

4,550

4,970

4,980

4,950

5,920

6,510

7,040

8,060

8,540

8,320

8,240

8,250

7,300

7,660

'

195,930

6,320

388,600

June

8,250 

8,250

7,740

*7,490

7, '020

6,350

6,680

4,930

5,590

5.200

3,200

3,230

3,650

4,910

5,840

7,550

6,620

5,920

6,270

7,000

8,560

8,570

7,420

6,100

6,410

6,510

*6,960

8,100

8.550

7,720

191,970

6,599

580,800

July

6,060 

4,190

*5,500

5,200

5,190

3,190

5,180

5,540

5,220

5,340

3,330

2,710

2,320

2,350

2,520

2,310

2,510

2.500

2,500

2,510

2,930

3,460

4,150

4,150

4,460

5,130

6,010

6.110

6,050

4,940 

4,170

112,510

5,623

222,800

Aug.

4,620 

5.150

5,100

4,190

3,510

5,950

4,060

2,620

2,260

2,250

2,240

2,250

2,250

2,250

2,260

2,270

2,280

2.220

*2,290

2,500

2,340

2,550

2,550

2,550

2,560

2,580

2,530

2,390

2,410

2*4iO 

2,420

86,350

2,785

171,500

Sept.

2,450 

2,440

2,450

2,460

2,490

2,500

2,510

2,540

2,550

2,560

2,590

2.600

2,600

2,600

2,460

1,900

1,960

*1,880

1,740

1,750

1,750

1,720

1,670

1,820

1,810

1,720

1,770

1,800

1,770

1,710

64,510

2,150

128,000

Calendar year 1955: Max 32,800 Mln 66 Mean 1,765 Ac-ft 1,278,000

Water year 1955-56: Max 32,800 Min 66 Mean 3,795 Ac-ft 2,755,000

* Discharge measurement made on this day.
316 SAN JOAQUIN RIVER BASIN

Modesto Canal near La Grange, Calif.

Location.--Lat 37°40i04", long 120°27'26", in SWv sec. 17, T. 3 S., R. 14 E., on right 

bank 0.5 mile northeast of La Grange and 1 mile downstream from intake at La Grange 

Dam.

Records available. April 1903 to September 1956.

Gage. Water-stage recorder and concrete control at present site since Mar. 8, 1932.

Datum of gage is 272.4 ft above mean sea level (levels by Modesto Irrigation District). 

April 1903 to July 1904 staff gage at approximately present site. July 1904 to February 1924 staff gage and February 1924 to March 1932 water-stage recorder, at site 

0.9 mile upstream.

Average discharge. 53 years, 387 cfs (280,200 acre-ft per year).

Extremes. 1903-56; Maximum daily discharge, 1,820 cfs July 1, 1935; no flow at times.

Remarks. Records excellent except those for period of no gage-height record, which are 

good. Canal diverts from right bank of Tuolumne River at La Grange Dam for irrigation 

in Modesto and Waterford Irrigation Districts.

Cooperation. Water-stage-recorder graph furnished by Modesto Irrigation District; eight 

discharge measurements furnished by city and county of San Francisco.

Revisions (water years). WSP 881: 1904-9 (yearly summaries only).

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

363

353

323

274

*279

324

311

287

290

293

284

260

242

243

240

169

11

6.5

1.7

1.7

1.8

1.7 

2.0

1.7

1.7

1.8

1.7

1.8

1.1

l'.7

4,574.4

148

9,070

Nov.

1.8

109

125

117

15

13

17

145

175

*152

153

148

132

95

20

20

140

141

19

20

153

m19

170

24

19

130

124

133

2,855.8

95.2

5,660

Dec.

146

162

25

26

172

120

120

182

220

155

26

307

442

595

*612

636

34

18

23

32

32

34 

44

33

18

19

12

2.4

1.0

1.0

. 8

4,250.2

137

8,430

Jan.

~T5 0.5

.6

.6

1.8

.5

.6

.5

.5

.5

.5

.5

.5

.6

1.3

.8

.5

.5

.5

.5

.5

.5 

1,2

.6

.5

*1.0

.6

.5

.5

.5

.5

21.7

0.70

43

Feb.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.6 

.8

76

.4

.1

.1

0

o

13.3

0.46

26

Mar.

0

0

0

0

0

0

0

O

ao

aO

ao

ao

a320

a580

578

580

582

584

580

578

580

720 

988

1,080

1,080

1,080

1,090

1,090

*1,100

1.110

1,110

^ 15, 410

497

30,570

Apr.

1.100

1,090

1,100

1,100

1,100

1,100

1,090

1,090

1,090

1,080

1,080

1,080

1,070

1,070

1,060

1,080

863

*799

796

796

796

804 

802

799

796

796

807

804

804

799

28,641

955

56,810

May

799

799

802

809

820

820

820

822

822

822

712

679

676

672

665

828

883

889

1,040

1,080

1,090

1,090 

1,O9O

1,100

1,100

1,100

1,100

1,100

1,100

1,160

1.190

28,479

919

56,490

June

1,190

1,190

1,190

1,180

1,180

1,180

1,190

1,180

1,190

1,180

*1,190

1,200

1,200

1,180

1,190

1,200

1,200

1,160

1.140

1,150

1,200

1,220 

1,210

1,220

1,230

1,230

1,230

1.240

1,240

1,220

35,900

1,197

71,210

July

1,210

1,210

1,200

1,190

1,180

1,180

1,180

1,190

1,180

1,180

1,180

910

838

852

852

849

849

849

847

847

1,030

1,280 

1,490

1,540

1.570

1,570

1,570

1,560

1,550

1,530

1,550

37,013

1,194

73,410

Aug.

1.580

1,330

1,240

1,230

1,220

1,230

1,210

1,190

1,080

901

830

825

817

820

796

792

792

792

794

789

794

782 

772

774

774

774

772

774

772

774

776

28,796

929

57,120

Sept.

774

776

776

776

776

776

776

774

772

769

772

769

767

767

644

512

523

521

*518

521

521

521 

521

521

521

521

521

521

519

466

19,212

640

38,110

Calendar year 1955 : Max 972 Min o Mean 403 Ac-ft 291,800

Water year 1955-56 : Max 1,58O Min 0 Mean 561 Ac-ft 406,900

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Tuolumne River above and 

below La Orange Dam and for Turlock Canal.
SAN JOAQUIN RIVER BASIN

Turlock Canal near La Grange, Calif.

Location. Lat 37°40'00", long 120°26'25", in NE^NWv sec. 21, T. 3 S., R. 14 E., on right 

bank 2,400 ft downstream from intake at La Grange Dam and 1.2 miles east of La Grange.

Records available. October 1898 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 265 ft (from topographic map). July 1, 1899, to Sept. 14, 1915, staff gage at different sites and datums 

near canal intake.. Sept. 14, 1915, to Apr. 15, 1924, staff gage at present site and 

datum.

Average discharge.--58 years, 560 cfs (405,400 aore-ft per year).

Extremes.--1898-1956: Maximum daily discharge, 2,280 cfs June 12, 1949; no diversion for 

irrigation during some periods in each year. Prior to 1939, unmeasured small discharge 

during winter called zero.

Remarks.--Records excellent. Canal diverts from left bank of Tuolumne River at La Grange 

Dam for irrigation in Turlock Irrigation District and to supply town of La Grange. During fall and winter some unmeasured flow is diverted from canal at tunnel 0.3 mile above 

gage, passed through La Grange powerplant and returned to river.

Cooperation. Water-stage-recorder graph furnished by Turlock Irrigation District; 10 discharge measurements furnished by city and county of San Francisco.

Revisions (water years).--WSP 881: 1899-1908 (yearly summaries only). Revised figures of 

discharge, in cubic feet per second, for the water years 1917-20, 1922, superseding 

those published in WSP 461, 481, 511, 551, are given herein. Complete tables of daily 

discharge are given for the water years 1918-19, but only revised figures are given for 

other water years.

Date

1917

Sept. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

Discharge

134

127

118

115

103

91

86

96

133

128

118

103

87

75

80

80

80

80

80

80

80

80

80

80

Date

1917-Con.

Sept. 25

26

27

28

29

30

1920

Aug. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Discharge

80

80

86

91

80

75

197

190

173

165

161

155

155

148

134

132

133

136

134

86

80

81

Date

1920-Con.

Aug. 17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Sept. 1

2

3

4

5

6

7

8

9

Discharge

90

88

89

89

82

78

75

75

76

84

204

215

280

175

282

118

113

104

99

93

87

81

82

79

Date

1920-Con.

Sept.lO

1921

Oct. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Discharge

39

53

53

47

47

47

47

47

47

47

47

47

47

47

47

47

47

47

47

20

Month

Water year 1916-17 ...............

August 1920 ........................

Calendar year 1920 ...............

Water year 1921-22 ...............

Maximum

1,680

282

1,680

1,840

Minimum

o

75

0

0

Mean

593

137

534

528

Runoff In 

acre-feet

429,000

8,410

388,000

383,000
318 SAN JOAQUIN RIVER BASIN 

Tux-lock Canal near La Grange, Calif. Continued

Discharge, In cubic feet per second, water year October 1917 to September 1918

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30 

31

Total

Mean

Ac- ft

Oct.

70

70

70

70

70

0

0

0

0

0

0

0

0

0

0

0

0

0

0

c

0

0

0

0

0

0

0

0

0 

0 

0

350

11.3

694

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

62

91

115

70

70

80

78

78

78

70

70

70

70

70

70

70

70

70

240

316 

270

155

2,333

75.3

4,630

Jan.

141

128

103

103

115

122

103

97

91

86

86

91

91

109

197

169

162

155

155

183

155

128

115

103

103

91

91

91

86 

66

75

3,591

116

7,120

Feb.

88

84

81

81

81

81

205

774

818

398

364

330

452

452

416

347

330

566

416

364

381

489

489

688

818

958

818

752

-

12,121

433

24,000

Mar.

667

646

910

910

1.030

841

470

489

489

489

527

489

470

489

298

235

147

0

0

0

0

0

0

0

124

182

175

175

175 

175

175

10,777

348

21,400

Apr.

182

175

254

386

466

562

662

769

882

946

995

1,040

1,060

1,000

910

910

910

910

1,020

1,100

1,190

1,300

1,360

1,420

1,450

1,500

1,560

1,600

1.650 

1,630

29,779

993

59,100

May

1,630

1,660

1,680

1,690

1,710

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1,720

1.750

1,720

1,720

1,750

1,720

1,690

1,710

1,750

1,720

1,640

1,520 

1.500

1,300

52,020

1,680

103,000

June

1,300

1,300

1,380

1,430

1,430

1,430

1,520

1,550

1,580

1,640

1,660

1,660

1,700

1.720

1,720

1,720

1,720

1,680

1,660

1,660

1,720

145

620

1,420

*1,620

1,600

1,270

1,520

1,430 

1,270

44,073

1,470

87,500

July

1,110

1,080

1,240

1.400

1,080

841

752

626

546

489

452

416

452

347

330

298

282

250

235

220

212

198

190

168

160

145

130

116

109 

*102 T5~9

14,085

454

27,900

Aug.

83

79

87

103

128

80

79

72

62

66

56

56

56

62

62

62

62

75

91

91

70

*6Z

38

34

32

27

0£ ±2.

25

26 

26

31

1,908

61.5

5,780

Sept.

42

57

61

66

46

53

29

29

28

31

38

22

0

0

0

80

80

80

109

109

105

97

91

95

97

101

88

97

95

103

1,923

64.1

3,810

Calendar year 1917 : Max 1,680 Mln o Mean 599 Ao-ft 434,000

Water year 1917-18 : Max 1,750 Min 0 Mean 474 Ac-ft 343,000

* Discharge measurement made on this day. 

Note.. No gage-height record Aug. 12-17, Aug. 22 to Sept. 5, Sept. 5-12) discharge estimated on 

basis of 1 discharge measurement and records for nearby streams.

Discharge, In cubic feet per second, water year October 1918 to September 1919

Day

1 

2 

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac-ft

Oct.

119 m119

119

118

119

80

80

82

80

82

81

83

a38

80

80

a38

2,139

69.0

4,240

Nov.

a58

 

C)

0

0

0

0

0

0 

0

0

0

0

0

0

0 

0

0

532

17.7

1,050

Dec.

0 0" 

0

60

105

105

105 

105

105

77

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

58

75 

75

75

75

1,010

32.6

2,000

Jan.

75 

66 

80

75

75

70

75 

75

75

75

75

75

75

73

74

75

75

75

76

75

76 

70

80

78

70

75

75

75 

75

75

75

2,311

74.5

4,580

Feb.

73

86

109

105

103 

154

211

204

225

222

500

373

390

460

538

611

640

400

556 

440

128

155

151

155

141

155

7,235

258

14,400

Mar,

155

m159

155

159

162 

215

270

260

258

258

258

258

248

255

255

248

258

262

255

255

255

320

391

450

510

557 

599

651

706_

9,356

302

18,600

Apr.

759 

818 

849

895

958

958

982 

982

958

982

982

1,020

1,060

1,120

1,170

1,220

1,280

1,380

1,440

1,520

1,590 

1,650

1,660

1,700

1,720

1,720

1,720

1.750 

1,720

1,750

38,313

1,280

76,200

May

1.750 

1,750 

1,750

1,750

1,750

1,750

1.720 

1,750

1,750

1,750

1,750

1,750

1,750

1,750

1,750

1,740

1,720

1,720

1,720

1,720

1,720 

1,720

1,720

1,720

1,720

1,720

1,720

1,720 

1,720

1,720

1,720

53,760

1,730

106,000

June

1,720 

1,720 

1,720

1,720

1,720

1,720

*1,720 

1.750

1,750

1,720

1,630

1,400

1,240

1,050

958

1,080

1,060

1,010

1,060

1,150

1,110 

1,010

887

887

864

796

750

667 

606

546

36,961

1,230

73,200

July

524 

498

452

374

380

376

380 

561

547

348

550

554

525

500

265

255

210

237

255

224

211 

197

184

288

225

193

142

136 

115

109

101

8,676

280

17,200

Aug.

109 

102 

88

81

81

77

70 

66

66

66

66

56

56

54

54

49

46

ii

48

48

50 

50

50

50

50

49

49

49 

49

49

49

1,869

60.3

3,710

Sept.

49

49 

49

49

49

45

45

43

43

45

45

43

40

40

57.

37

57

57

60

75

102"

160

55

102

68

54

42 

45

106

1,851

61.0

5,650

Calendar year 1918: Max 1,750 Mln 0 Mean 475 Ac-ft 344,000 

Water year 1918-19: Max 1,750 Mln 0 Mean 449 Ac-ft 325,000 

Calendar year 1919: Max 1,750 Mln 0 Mean 444 Ac-ft 321,000

- Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of Information furnished by observer.
SAN JOAQUIN RIVER BASIN 

Turlock Canal near La Grange, Calif.--Continued

Discharge, in cubic feet per second, water year October 1955 to September 1956

319

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26 

27 

28

29

30

31

Total

Mean

Ac-ft

Oct.

360

162 

586

53T

*454

476

399

218

62

483

384

359

402

521

101

3.9

4.3

4.3

3.9

3.6

3.3

3.'l

3.1

3.3 

3.3 

3.3

3.1

3.3

3 1

5,553.1

179

11,010

Nov.

3.6

2.9

sTs"

13

29

409

858

YeT

723

747

698

544

411

314

523

167

151

9.7

9.7

9.7

12

430 

9.0

9.0

62 

9.7 

194

199

287

7,607.4

254

15,090

Dec.

400

269

6.8

19.

382

504

328

382

300

14

13

329

386

260

*179

164

18

18

678

476

548

1.060

472 

5.8

4.3

6.8 

3.3 

2.0

176

1.5

7,232.2

233

14,340

Jan.

0.8

.8

.8

.8

2.0

1*1

2.6

2.0

1.8

1.5

1.5

1.3

1.3

1.5

1.8

1.3

1.1

1.0

1.0

1.0

"|77

1.6 

.8

.8

*.8 

.8 

.8

.7

.7

. 8

38.2

1.23

76

Feb.

1.0

IT!

1.1

1.3

1.3

1.5

1.5

1.5

1.6

1.5

1.3

1.3

1.5

1.5

1.5

1.6

1.6

1.6

1.8

1.8

2.0

2.0 

2.0

2.0

1.8 

2.0 

2.0

Lil

45.6

1.57

90

Mar.

1*1

2.2 

2.4

2.2

2.2

2.6

2.6

2.6

2.6

2.9

2.6

403

713

776

1,200

1,610

1,790

1,820

1,830

1,850

1,840

1,840

1,760 

1,770

1,810

1,710 

1,740 

1,770

*1,870

I'p50

1,790

31,869.1

1,028

63,210

Apr.

1.660

1,530 

1,470

1,460

1,460

1,460

1,460

1,470

1,320

1,240

1,080

*833

838

838

841

836

844

*791

737

737

734

731

1,080 

*1,260

1,430

1,090 

716 

716

728

725

32,115

1,070

63,700

May

722

719 

722

864

924

921

924

1,130

1,240

1,100

1,030

1,030

1,040

1,040

1,390

1,540

1,760

1.860

1,860

1,850

1,730

1,660

1,660 

1,660

1,650

1,650 

1,650 

1,650

1,650

1,650

1,640

41,916

1,352

83,140

June

1,640

1,650 

1,650

1,530

1.450

1,450

1,450

1,660

1,770

1,780

*1,700

1,740

1,790

1,850

1,830

1,830

1,840

1,850

1,850

1,850

1,840

1,850

1,840 

1,860

1,810

1,760 

1,790 

*1,850

1,920 

2.010

52,690

1,756

104,500

July

2,050

1,940 

1,870

1,850

1,830

1,810

1,980

2,150

2,140

2,160

2,150

1,800

1,480

1,480

1,470

1,460

1,460

1.450

1,456

1,460

1,900

2,180

2,250 

2,260

2,240

2.270 

2,210 

2,120

2,120

1,970 

1 ' 890

58,850

1,898

116,700

Aug.

1,910

1.950 

1,950

1,910

1,750

1,910

1,890

994

962

1,100

1,160

1,210

1,170

1,170

1,210

1,230

1,220

1,160

1,190

1,230

1,250

1,260

1,270 

1,290

1,290

1,310 

1,300 

1,320

1,340

1,340

1,370

42,616

1,375

84,530

Sept.

1,380

1.400 

1,400

1,340

1,160

1,180

1,180

1,220

1,310

1,350

1;320

1,330

1,320

1,330

1,360

887

902

867

*678

663

685

677

643

813

762

731 

740 

745

726 

799

30,898

1,030

61,290

Calendar year 1955: Max 1,810 Min 1.1 Mean 775 Ac-ft 562,100

Water year 1955-56: Max 2,270 Min 0.7 Mean 851 Ac-ft 617,700

* Discharge measurement made on this day.
320 SAN JOAQUIN RIVER BASIN

Tuolumne River at Modesto, Calif.

Location. Lat 37°37'38", long 120°59'20", in SWij sec. 33, T. 3 S., R. 9 E., on left bank 

at U. S. Highway 99 bridge in Modesto, 0.2 mile downstream from Dry Creek.

Records available .--1878-84 , 1891-97 (gage heights only), October 1943 to September 1956. 

March 1940 to December 1956 in reports of California Department of Water Resources .

Gage . --Water-stage recorder. Datum of gage is at mean sea level, unadjusted (levels by 

Modesto Irrigation District). Prior to Nov. 16, 1953, water-stage recorder at site 

1,000 ft downstream at same datum.

Average discharge. --13 years (1943-56), 1,348 cfs (975,900 acre-ft per year).

Extremes . --Maximum discharge during year, 37,600 cfs Dec. 25 (gage height, 66.43 ft); ralnl- 

 mum, 200 cfs Oct. 5, 6, 8.

1943-56: Maximum discharge, 57,000 cfs Dec. 9, 1950 (gage height, 69.19 ft); minimum, 184 cfs July 16, 1955.

Remarks . Records good. Plow regulated by reservoirs and powerplants above station. In 

addition to diversions into Modesto and Turlock Canals (see p. 316,317), there are diversions for irrigation of about 1,300 acres between stations above La Grange Dam and at 

Modesto. See Remarks for Tuolumne River above La Grange Dam, near La Grange.

Cooperation. Records collected and prepared in cooperation with California Department of 

Water Resources .

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

41.2

41.5

42.0

43.0

Oct. 1 to Jan. 31

185

425

925

2,150

50.0

58.0

63.0

66.0

6,940

14,500

23,800

35,500

Feb. 1 to Sept. 30

43.0 2,150

45.0 3,690

51.3 8,100

Note.--Same as 

preceding table 

below 43.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

215 

230

215

215

200

215

230

215

222

222

222

230

*230

230

238

260

252

300

497

497

461

479

425

348

382

470

*479

479

506

125

340

9,929

320

19,690

Nov.

374 

630

742

731

731

680

524

497

374

284

252

238

?38

245

292

*591

*680

680

690

640

562

620

720

710

630

610

690

*572

620

670

16,517

551

32,760

Dec.

710 

720

710

784

630

710

752

773

848

837

826

*815

826

815

804

804

804

1,140

99*

960

870

925

2,770

17,800

*5 1,400

18,900

21,000

*17,600

*9,760

8,440

8,300

154,027

4,969

305,500

Jan.

8,700 

8,440

*8,510

8,420

8,610

10,500

9,110

8,700

8,650

8,190

8,040

8,060

6,940

5,250

6,760

9,110

*8,990

8,310

8,050

*7,440

7,070

5,440

5,710

8,520

*7 , 680

8,340

9,020

8,720

8,270

8,100

8, 02O

249,670

8,054

495,200

Feb.

8.080 

6,920

5,440

5,120

5,060

4,950

4,020

3,820

2,820

2,610

2,590

2,540

2,480

2,550

*3,580

3,710

3,730

3,740

3,120

2,490

2,480

2,500

2,750

2,810

2,950

2,900

*3,070

3,610

3,630

- _____

106,070

3,658

210,400

Mar.

5.650 

3,680

2,830

2,810

2,720

2,780

2,850

2,860

2,830

2,810

2,790

2,710

*2,630

2,840

2,180

1,520

1,320

1,760

1,790

1,810

1,780

1,760

1,580

994

804

*731

784

815

859

1,460

2,000

64,137

2,069

127,200

Apr.

2,200 

1,480

1,080

1,080

1.060

1,060

1,090

1,080

*1,090

1,250

1,420

1,890

2,500

2,670

2,670

2,500

2,000

1,760

1,700

1,680

1,520

1,480

2,410

2,280

2,220

1,820

3,370

4,560

3,940

5,800

60,460

2,015

119,900

May

2,590 

2,200

2,120

2,270

4,850

6,180

6,250

*6TlSO

5,950

6,000

6,180

6,240

5,980

4,820

5,680

2,440

2.050

2,280

2,410

2,270

2,500

5,910

4,210

5,060

6,100

6,220

6,250

6,200

*6,170

4,920

5,900

140,110

4,520

277,900

June

6,160 

6; 150

6,100

5,460

5,540

4,900

4,460

4,510

2,230

1,110

870

804

794

1,590

*2,220

4,080

4,940

5,690

5,780

5,680

5,410

6,180

6,140

4,470

5,610

4,280

3,910

5,120

6,040

6,270

124,098

4,157

246,100

July

4,850 

2,920

1,500

859

762

690

751

610

*470

416

408

566

576

357

576

540

532

548

548

524

548

548

416

742

751

1,090

1,790

2,620

2,850

2,820

1,520

52,458

1,046

64,540

Aug.

1,150 

1,790

F~070" 2.210

1,510

1,060

*1,500

1,510

892

751

650

640

640

610

600

610

591

591

640

660

620

610

600

610

600

610

650

620

620

620

620

27,215

878

55,980

Sept.

620 

650

600 655"

650

826

826

815

815

*784

752

762

794

794

815

826

794

775

837

BTO

804

815

815

794

794

773

794

815

794

804

25,141

771

45,900

Calendar year 1955: Max 31,400 Mln 192 Mean 848 Ac-ft 614,200

Water year 1955-56 : Max 31,400 Mln 200 Mean 2,754 Ac-ft 1,999,000

Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 321

Middle Fork Stanislaus River at Kennedy Meadows, Calif.

Location. Lat 38°18 1 , long 119°45 I , in NE^- sec. 11, T. 5 N., R. 20 E., on right bank at 

upper end of Kennedy Meadows, 1 mile upstream from Deadman Creek and 2 miles downstream 

from Relief Reservoir.

Drainage arejj.. 49.5 sq mi.

Records available. October 1938 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 6,450 ft (from topographic map).

Average discharge. 17 years (1938-45, 1946-56), 135 cfs (97,740 acre-ft per year).

Ext reme s. --Maximum discharge during year, 1,480 cfs Dec. 23 (gage height, 6.51 ft, from 

recorded range in stage); minimum daily, 8.0 cfs Nov. 12.

1938-56: Maximum discharge recorded, 1,700 cfs Nov. 20, 1950 (gage height, 6.66 ft), 

from rating curve extended above 900 cfs on basis of slope-area determination of peak 

flow; minimum daily recorded, 7.2 cfs Feb. 11, 1948.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Flow regulated by Relief Reservoir (usable capacity, 15,550 acre-ft). 

No diversion.

Cooperation. Water-stage-recorder graph and two discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating tables, water year 1955-56, except periods of Ice effect (gage height, 

In feet, and discharge, In cubic feet per second)

Oct. 1 to Mar. 26 Mar. 27 to Sept. 30

1.0 

1.2 

1.5 

2.0 

2.5

7.0

12

81

3.0 

3.5 

4.0 

5.0 6.0^

136

216

340

655

1,140

1.5 

2.0 

2.5 

3.0

21

44

78

133

3.5 221

4.0 345

5.0 700

6.0 1,240

Discharge, In cubic feet per second, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

IBS' 196

175

173

95

14

9.8

9.5

9.8

9.5

10

9.5

9.2

9.8

10

9.8

9.5

9.5

11

9.8

*9.8

9.8

9.2

8.8

9.0

9.2

9.2

9.0

9.0

8.8 8 . 8

1,078.3

34.8

2,140

Nov.

8.5

8.8

8.8

8.8

8.8

8.8

8.8

8.2

9.0

8.2

8.2

8.0

8.2

9.2

9.5

10

12

11

11

12.

17

b!2

b!7 

b!2

bll

11

12

12

12

11

319.8

10.7

634

Dec.

12

13

12

b!2

14

20

15

14

18

14

14

14

13

13

14

13

13

12

18

29

25

400

liOOO 

400

200

200

150

100

90

80

70

3,012

97.2

5,970

Jan.

55

120

100

2,625

84.7

5,210

Feb.

65

50

45

40

37

1,333

46.0

2,640

Mar.

35

> 37

f 50

r 70

90

*76

82

90

'57 95 

34

1,662

53.6

3,300

Apr.

84

76

70

68

70

77

89

101

115

125

112

99

89

81

75

75

78

84

94

160

247

308

378

411

460

399

300

245

213

217

5,000

167

9,920

May

247

292

375

540

423

345

290

243

230

207

201

183

167

157

*2lT

285

384

423

522

536

785

945

1.020 

1,000

965

980

915

790

805

880

910

16,256

524

32,240

June

*835

795

860

930

745

612

640

725

805

870

915

619

536

795

628

516

552

692

*805

725

672

710

790 

815

750

740

880

920

920

755

22,552

752

44,730

July

540

498

460

470

466

460

470

512

560

544

466

393

354

336

302

333

375

420

604

536

564

384

503 

576

655

576

411

302

275

252

225

13,800

445

27,570

Aug.

197

T63

120

114

120

119

120

124

129

120

114

120

119

123

118

107

102

102

101

97

91

83

81 

83

86

89

99

118

102

*107

102

3,470

112

6,880

Sept.

107

113

98

78

75

101

108

115

123

144

112

115

124

112

168

168

167

167

170

172

170

168

167 

167

165

163

174

TIT

26

71

3,919

131

7,770

Calendar year 1955: Max 1,000 Mln 8.0 Mean 107 Ac-ft 77,400

Water year 1955-56: Max 1,020 Mln 8.0 Mean 205 Ac-ft 148,800

Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 21 to Mar. 26; discharge estimated on basis of recorded range In 

stage, weather records, and records for nearby stations.
322 SAN JOAQUiN RIVER BASIN

Clark Fork Stanislaus River near Dardanelle, Calif.

Location. Lat 38" 21' 50", long 119°52'30", in SE^ sec. 15, T. 6 N., R. 19 E., on right 

bank 0.3 mile upstream from mouth and 3 miles northwest of Dardanelle.

Drainage area.--65.7 sq mi.

Records available.--October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,500 ft (from topographic map).

Average discharge.--6 years, 176 cfs (127,400 acre-ft per year).

Extremes. Maximum discharge during year, 3,340 cfs Dec. 23 (gage height, 10.54 ft), from 

rating curve extended above 1,100 cfs on basis of slope-area determination at gage 

height 11.88 ft; minimum, 14 cfs Nov. 22, but may have been less during period of ice 

effect.

1950-56: Maximum discharge, 4,350 cfs Nov. 20, 1950 (gage height, 11.88 ft), from 

rating curve extended above 1,100 cfs on basis of slope-area determination of peak 

flow; minimum, that of Nov. 22, 1955.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No storage or diversion.

Rating tables, water year 1955-56, except periods of ice effect 

and discharge, in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to May 23

2.3 16

2.6 37

3.0 79

3.5 155

4.0 

5.0 

6.0 

7.0

262

500

805

1,200

3.0 

4.0 

5.0 

7.0 

9.0

69

257

505

1,220

2,300

ge height, in feet,

May 24 to Sept. 30

2.5 41

3.0 96

4.0 268

5.0 505

7.0 1,220

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

21

2T

21

21

*21

21

21

21

21

21

21

21

21

21

24

21

21

21

26

53

22

21

21 

21

21

22

22

22

21

21

21

665

21.5

1,320

Nov.

20

21

21 

21

22

22

21

*20

20

20

20

19

18

2T

23

24

30

34

40

37

38

26

b25 

b26

b28

b28

30

28

27

27

757

25.2

1,500

Dec.

26

3T

b30 

b35

53

77

49

38

54

38

31

32

30

31

31

31

31

31

39

54

67

1,170

2,220 

689

385

330

266

224

191

169

157

6,645

214

13,180

Jan.

146

135

128 

122

119

113

109

109

102

101

99

97

96

M

250

248

169

147

138

135

131

142

151 

131

138

133

126

129

129

a!20

alOS

4,097

132

8,130

Feb.

105

T6T

99 

99

99

97

96

94

93

93

93

93

93

93

91

*86

89

83

83

82

80

80

82 

77

77

76

75

75

73

2,557

86.2

5,070

Mar.

73

73

75 

75

76

73

76

75

76

79

79

76

79

82

82

68

97

105

110

112

124

133

151 

187

209

220

202

206

231

246 235-

3,605

123

7,550

Apr.

200

179

167 

ITT

187

213

246

268

299

305

266

*242

224

202

189

167

195

202

231

281

319

352

408 

463

35T

400

345

321

316

343

8,172

272

16,210

May

385

428

499 

586

451

415

385

358

*358

336

323

299

283 286"

325

396

440

469

520

619

842

1,030

1,130 

1,120

1,040

1,070

1,030

919

922

980

1,010

19,256

621

36,190

June

*960

956

1.040 

1,030

*846

793

838

905

968

1,040

1,010

972

933

849

709

70~9~ 670

807

818

737

723

772

821 

814

748

782

810

852

624

678

25,414

847

50,410

July

55o~ 586

483

473

462

449

452

457

460

421

376

*345

332

319

310

310

297

321

339

323

306

325

309 

308

307

276

238

223

196

176

162

10,861

350

21,540

Aug.

149

138

130 

125

120

114

110

110

107

104

102

96

93

91

88

66

64

63

82

79

77

75

71 

71

*69

66

66

67

71

63

61

2,850

91.9

5,650

Sept.

59

58

56 

55

54

54

53

52

55

64

55

52

50

49

48

46

46

46

51

52

48

47

46 

45

44

44

47

45

44

43

1,510

50.3

3,000

Calendar year 1955: Max 2,220 Min 18 Mean 109 Ac-ft 78,660

Water Water year year 1955-56: 1955-56: Max Max 2,220 2,220 Min Min 18 18 Mean Mean 237 237 Ae-ft Ae-ft 171,800 171,800

Peak discharge (base, 600 cfs). Dec. 23 (4:50 a.m.) 5,540 efs (10.54 ft); May 4 (12:50 a.m.) 695 

cfs (5.60 ft); May 23 (11 p.m.) 1,360 cfs (7.36 ft) ; June 3 (11 p.m.) 1,280 cfs (7.14 ft)j June 10 

(8 p.m.) 1,280 cfs (7.16 ft); June 28 (6:30 p.m.) 1,140 cfs (6.79 ft ; July 24 (6 p.m.) 607 cfs 

(5.34 ft).

* Discharge measurement made on this day.

a Ho gage-height record; discharge interpolated or estimated on basis of weather records.

b Stage-discharge relation affected by ice.
SAN JOAQUIN RIVER BASIN

Middle Fork Stanislaus River at Hells Half Acre Bridge, Calif.

Location. Lat 38°15'00", long 120°02'00", in Sw£ sec. 30, T. 5 N., R. 18 E., on right

bank 800 ft upstream from Hells Half Acre Bridge, 1.5 miles upstream from Cow Creek, and 

4 miles northwest of town of Strawberry.

Records available. February to September 1956.

Gage.--Water-stage recorder.- Altitude of gage is 3,450 ft (from topographic map).

Extremes. Maximum discharge during period February to September 1956, 4,780 cfs May 23 

(gage height, 8.35 ft); minimum, 116 cfs Sept. 30.

Maximum discharge Dec. 23, 1955, 26,600 cfs (gage height, 17.72 ft, from floodmarks), 

from slope-area determination of peak flow.

Remarks. Records good. Flow partly regulated by Donnells Reservoir (now under construction) .

Rating tables, Feb. 18 to Sept. 30, 1956 (gage height, in feet, and discharge, 

in cubic feet per second)

Feb. 18 to May 23 May 24 to Sept. 30

3.3 

3.5

4.0

340

400

620

5.0 

6.0 

8.0

1,250

2,090

4,320

2.4 

3.0 

3.5

106

246

400

Note. Same as 

preceding table 

above 3.5 ft.

Discharge, in cubic feet per second, February to September 195S

Day

1 

2

3

4

5

&

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

t220

Nov.

t44

Dec. Jan. Feb.

-

_

-

-

_

-

-

-

-

_

-

_

-

t460

.

-

410

397

404

394

394

421 

400 

388

385

379

373

373

_ .....

-

-

-

Mar.

361 

376

382

391

397

373

376

382

391

404

414

400

407

421

*424

459

530

585

648

642

708

784

886 

1,060 

1,160

1,200

1,100

1,080

1,190

1,260

1,210

20,401

658

40,460

Apr.

1,000 

874

808

802

88S

,030

,190

,300

,480

,540

,240

,080

*975

898

850

880

923

988

1,130

1,420

1,680

1,850

2,130 

2,350 

2,330

2,090

1,740

1,560

1,520

1,600

40,124

1,337

79,580

May

1,790 

2,000

2,320

3,460

2,460

2,260

2,080

1,840

*1,840

1,670

1,640

1,480

1,540

1,340

1,580

1,940

2,160

2,250

2,420

2,640

3,380

4,020

4,150 

3,960 

3,630

3,660

3,460

3,120

3,120

3,270

3,320

79,600

2,568

157,900

June

3,110 

3,020

3,190

3,200

2,700

*2,420

2,470

2,660

2,790

2,920

2,910

2,650

2,410

2,540

2,150

1,920

1,930

2,190

2,460

2,130

2,060

2,150

2,310 

2,290 

2,170

2,130

2,400

2,440

2,460

2,070

74,250

2,475

147,300

July

1,670 

1,500

1,360

1,360

1,320

1,300

1,310

1,340

1,400

1,360

1,180

1,050

*949

910

868

886

916

942

1,250

1,090

1,120

994

994 

1,170 

1,140

1,180

910

766

686

595

555

34,071

1,099

67,580

Aug.

498 

447

400

360

360

350

340

340

340

334

322

313

310

310

298

286

277

274

268

260

249

241

228 

228 

225

*218

210

230

246

223

225

9,210

297

18,270

Sept.

215 

223

223

200

183

195

208

215

218

268

241

210

236

210

241

254

252

249

257

274

257

252

246 

243 

*241

238

254

246

139

120

6,808

227

13,500

Calendar year : Max Mln Mean Ac-ft

Water year : Max Min Mean Ac-ft

* Discharge measurement made on this day. 

t Result of discharge measurement.
324 SAN JOAQUIN RIVER BASIN

Middle Fork Stanislaus River at Sand Bar Flat, near Avery, Calif.

Location.--Lat 38°11', long 120°09', in sec. 19, T. 4 N., R. 17 E., on left bank 1 mile

upstream from diversion dam of Pacific Gas & Electric Co. at Sand Bar Flat and

11 miles southeast of Avery. 

Drainage area.--318 sq mi.

Records available. September 1905 to September 1956. 

Page.--Water-stage recorder. Altitude of gage is 2,650 ft (from topographic map). Prior

to Mar. 19, 1928, staff gage at diversion dam 1 mile downstream at different datum.

Mar. '19, 1928, to October 1938, water-stage recorder at site 150 ft downstream at Epresent datum.

Average discharge.--50 years (1905-8, 1909-56), 704 cfs (509,700 acre-ft per year). 

Extremes. Maximum discharge during year, 26,000 cfs Dec. 23 (gage height, 20.2 ft, from

floodmarks), from rating curve extended above 6,000 cfs on basis of computation of

peak flow over dam; minimum daily, 57 cfs Nov. 9.

1905-56: Maximum discharge, 26,500 cfs Dec. 11, 1937 (gage height, 21.0 ft, from

floodmarks, at site then in use), from rating curve extended above 6,000 cfs on basis

of velocity-area study and computation of peak flow over Sand Bar Dam; minimum dailv.

30 cfs Nov. 28, 1919, Aug. 24, 1924.

Revisions.--The maximum discharge for the water year 1951 has been revised to

20,100 cfs Nov. 18, 1950 (gage height, 18.13 ft), superseding figure published in

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Flow slightly regulated by Relief Reservoir beginning in 1909 (capacity, 15,550 

acre-ft). Water diverted by Philadelphia Canal (see p. 329 ) from South Fork Stanislaus River through Spring Gap powerhouse into Middle Fork above station. Stanislaus 

tunnel diverts 1 mile downstream.

Cooperation.--Water-stage-recorder graph and six discharge measurements furnished by Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years).--WSP 831; 1935-36. The figures of peak discharge for the water 

year 1951 have been revised as shown below, superseding those published in WSP 1215.

Revised peak discharge. 1950-51: Nov. 18 (12 p.m.) 20,100 cfs (18.13 ft); Dec. 3 

(7 P.m.) 17,300 cfs (17.12 ft); Dec. 8 (7:30 a.m.) 15,800 cfs (16.52 f,t) .

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to June 30 July 1 to Sept. 30

2.6 

2.8 

3.0 

3.5

4.0

5.0

241

490

895

7.0 

9.0

11.0

1,400

2,880

5,150

13.0

15.0

18.0

8,300

12,200

19,700

3.4

4.0 

5.0

129 6.0

223 7.0

474 8.0

840

1,350

2,030

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4 

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

269 

265

255

245 

249

164

98

84

83

82

82

80

78

75 

73

80

76

78

74

80

*77

74

72

71

69

68

67

64

62

61

61

3,316

107

6,580

Nov.

61 

58

58

60 

60

61

62

60

57

58

58

58

61

75 

74

84

83

79

88

100

138

121

83

76

75

84

86

85

85

82

2,270

75.7

4,500

Dec.

100 

97

92

82 

68

*159

232

138

212

197

146

138

132

124 

123

123

125

148

266

518

581

a7,200

*al9.000

a4,200

a2,OOO

a3,000

a2,500

al,700

1,460

1,290

1,180

47,331

1,527

93,880

Jan.

1,070 

1,000

922

868 

908

890

864

828

841

.774

782

a820

a860

913 

2,050

5.220

,000

,620

,420

,330

,330

,460

,850

,990

,800

*d ,940

,910

,590

,390

,260

,180

42,680

1,377

84,650

Feb.

1.090 

1,020

965

940

913

868

828

d780

*d730

728

710

706

702

688 

670

630

618

610

590

580

569

566

658

626

580

566

552

541

541

20,565

709

40,790

Mar.

534 

538

548

558 

569

544

527

538

548

562

576

566

566

576 

580

602

666

733

805

818

868

950

1,040

1,200

1,320

1,420

1,360

1,290

1,360

1,440

1.460

25,662

828

50,900

Apr.

1,320 

1,170

1,080

1.020 

1,060

1,160

1,330

1,440

1,570

1,780

1,540

1,360

1,230

1,160 

1,080

1,080

1,110

1,180

1,260

1,490

1,830

1,960

2,380

2,590

2.740

*2,580

2,100

1,880

1,750

1,800

47,030

1,568

93,280

May

1,920 

2,140

2,410

4,090 

3,020

2,740

2,540

2,260

2,150

2,040

1,930

1,810

1,640

1.560 

1,650

*1,970

2,430

2,510

2,740

2,910

3,820

4,790

5.160

5,040

4,470

4,490

4,300

3,750

3,720

3,800

4,030

93,830

3,027

186,100

June

2,780 

3,590

3,720

5.910 

3,270

2,840

2,810

2,970

3,170

3,330

5,410

5,100

2,750

2,880 

2,590

2,260

2.110

2,250

2,660

*2,440

2,280

2,300

2,480

2,540

2,420

2,270

2,580

2,600

2,710

2,350

85,350

2,778

165,300

July

1.810 

1,570

1,440

dl,430 

1,400

1,370

1,560

1,410

1,450

1,460

1,280

1,140

1,040

995 

930

945

975

1,000

,290

,180

,200

,040

,060

,200

,160

,350

,020

849

764

680 

645

56,445

1,176

72,280

Aug.

586 

555

480

427 

421

409

595

395

392

384

568

565

358

358 

548

537

322

518

313

508

296

287

276

272

270

267

267

281

*505

281

10,896

551

21,610

Sept.

270 

274

278

253 

255

235

253

259

267

315

305

265

290

267

281

510

506

501

308

527

515

506

505

299

296

290

292

503

138

176

8,315

277

16,490

Calendar year 1955: Max 19,000 Min 57 Mean 582 Ac-ft 421,400

Water year 1955-56: Max 19,000 Min 57 Mean 1,152 Ac-ft 836,400

Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for station at Kennedy Meadows 

and North Pork Stanislaus River near Avery.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based on 

recorded graph.
SAN JOAQUIN RIVER BASIN 325

North Fork Stanislaus River below Silver Creek, Calif.

Location. Lat 38°26'20", long 120°00'20", in SEij sec. 20, T. 7 N., R. 18 E., on right 

bank 100 ft downstream from Silver Creek and 5.6 miles northeast of Big Meadow.

Drainage area. 29.2 sq mi.

Records available.--October 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is ft (from topographic map).

Extremes.--Maximum discharge during year, 1,370 cfs Dec. 23 (gage height, 9.17 ft), from 

rating curve extended above 500 cfs by logarithmic plotting; minimum dally, 2.8 cfs 

Sept. 22-26, 29, 30.

1952-56: Maximum discharge, that of Dec. 23, 1955; minimum daily, 1.8 cfs Oct. 14, 

1952.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated at low and medium stages by Lake Alpine, Union and 

Utica Reservoirs (combined capacity, 9,600 acre-ft). No diversion.

Cooperation.--Water-stage-recorder graph and three discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56, except periods of 

height, in feet, and discharge, in cubic feet p

if ice effect (gage

er second)

1.2 

1.6 

2.0 

2.4 

3.0 

3.5 

4.0

2.

4.

7.

13

26

42

63

4.5 

5.0 

5.5 

6.0 

7.0 

8.0 

9.0

94

139

195

275

530

870

1,290

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

30

30

30

30

30

30

29

29

29

29

29

29

28

28

28

23

12

12

*12

12

12

12

12

12

12

12

12

12

12

12

11

640

2O. 6

1,270

Nov.

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

12

12

12

12

15

16

11

4.9

4.5

4.5

4.8

6.5

7.1

8.4

8.2

303.9

10.1

603

Dec..

7.5

7.9

8.2

8.2

8.4

10

12

11

18

18

18

19

17

17

17

16

15

13

12

36

71

821

879

456

237

201

148

127

121

120

114

3,584.2

116

7,110

Jan.

112

108

101

97

96

96

94

93

93

91

92

98

loo

99

163

190

155

123

113

111

110

106

105

100

99

96

94

93

92

91

90.

3,301

106

6,550

Feb.

89

89

90

90

90

87

86

85

85

85

87

87

86

84

81

76

75

71

66

62

59

58

58

56

56

56

56

56

56

2,162

74.6

4,290

Mar.

56

57

58

60

b58

b57

57

59

61

62

b60

58

58

58

63

72

83

97

100

114

128

140

166

185

188

167

150

170

190

160

130

3,122

101

6\190

Apr.

100

90

85

120

150

190

210

230

250

200

150

120

100

90

100

110

130

150

190

250

300

330

380

400

350

250

220

200

200

230

5,875

196

11,650

May

280

350

460

650

400

300

250

220

210

200

170

160

140

180

300

320

350

370

440

600

800

700

*638

527

461

491

443

388

4OO

435

435

12,068

389

23,940

June

4O2

402

430

390

295

281

315

342

350

352

322

301

287

281

244

208

218

232

236

190

183

190

193

184

165

154

157

153

143

ili

7,714

257

15,300

July

83

68

57

52

48

45

41

41

39

36

31

25

20

18

17

16

16

15

19

19

16

14

19

63

*46

43

30

20

14

11

i,!

991.6

32.0

1,970

Aug.

8.4

7.3

6.5

5.9

5.6

5.3

*5.0

4.8

4.6

4.4

4.2

4.0

3.9

i,!

23

48

46

42

42

40

38

30

30

32

35

39

45

52

54

54 

52

775.7

25.0

1,540

Sept.

49

49

48

48

46

43

43

42

44

45

*45

46

48

47

46

45

44

23

3.7

3.2

3.0

2.8

2.8

2.8

2.8

2.8

3.0

3.0

2.8

2.8

836.5

27.9

1,660

Calendar year 1955; Max 879 Mln 4.1 Mean 58 6 Ac-ft 42,41O

Water year 1955-56: Max 879 Mln £.8 Mean 113 Ac-ft 82,07O

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Mote. No gage-height record Mar. 27 to May 22; discharge estimated on basis of weather records 

and records for Highland Creek below Spicer Meadows Reservoir.

493801 O - 59 - 22
326 SAN JOAQUIN RIVER BASIN

Highland Creek below Spicer Meadows Reservoir, Calif.

Location. Lat 38°23'50", long 119 0 59'30", In SW^ sec. 3, T. 6 N., R. 18 E., on right bank 

just downstream from Spicer Meadows Reservoir dam, 5.5 miles upstream from mouth and 

7 miles east of Big Meadow.

Drainage area. 43 sq mi, approximately.

Records available. Octc/ber 1952 to September 1956.

Sage.--Water-stage recorder. Altitude of gage is 6,350 ft (from topographic map).

Extremes. Maximum discharge during year, 8,800 cfs Dec. 23 (gage height, 11.50 ft), from

 rating curve extended above 1,200 cfs by logarithmic plotting; minimum daily, 0.1 cfs 

Oct. 20-30.

1952-56- Maximum discharge, that of Dec. 23, 1955; minimum daily, 0.1 cfs Oct. 30 

to Nov. 4, 1952, Nov. 9, 14, 1954, Oct. 20-30, 1955.

Flood of Nov. 20, 1950, reached a stage of 11.50 ft, from Pacific Gas & Electric Co. 

recorder chart (discharge, 8,800 cfs).

Remarks.--Records good except those for periods of doubtful or no gage-height record,

 wRTch are poor. Flow regulated by Spicer Meadows Reservoir (capacity, 4,060 acre-ft).

Cooperation.--Water-stage-recorder graph and three discharge measurements furnished by

 Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

0.1 

0.0

i.o

1.3 

1.7 

2.3

3.0 

3.6 

4.2 

5.0

36

73

136

243

450

890

1,550

2,450

3,660

5,260

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1*5

1.5

1.5

1.3

.9

.9

.9

.8

.8

.8

.8

.7

.6

.3

.2

.2

.2

.2

*.2

jl

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

1.4

16.8

0.54

33

Nov.

2.5

2.1

1.9

1.7

1.2

1.0

1.0

1.0

1.0

.9

.9

.9

.9

-=1

.8

.9

.9

1.0

1.1

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.0

1.1

1.1

1.0

34.6

1.15

69

Dec.

1=0

1.0

1.0

1.0

1.0

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.3

1.3

1.4

1.4

1.4

1.4

1.5

1.7

1.9

1,890

5.O40

709

400

300

200

190

170

160

160

9,246.0

298

18,340

Jan.

150

150

140

140

130

130

130

125

125

120

120

130

135

140

150

300

230

159

136

130

117

152

182

122

118

113

91

90

90

85

85

4,215

136

8,360

Feb.

80

80

75

75

73

69

66

62

63

65

65

70

70

69

65

65

66

63

64

63

57

62

63

57

56

54

50

55

52

1,874

64.6

3,720

Mar.

52

56

59

61

64

60

61

63

68

72

73

64

66

70

72

89

111

124

135

135

159

193

239

303

328

318

250

260

320

335

289

4,549

147

9,020

Apr.

197

158

144

164

235

298

355

387

432

423

273

218

186

165

156

179

201

Z43

325

420

471

499

609

672

609

485

348

305

305

352

-----

9,814

327

19,470

May

423

520

716

1,190

540

506

414

335

350

303

298

249

220

247

366

513

580

618

650

755

1,040

*1 . 260

1,240

1,080

920

962

890

765

780

850

860

20,440

659

40,540

June

795

795

890

815

584

540

609

672

695

745

695

650

592

544

444

399

411

474

468

396

387

417

426

411

363

372

384

378

352

285

- - - - '

15,988

533

31,710

July

237

205

175

168

158

144

139

140

135

122

104

89

81

74

69

68

65

65

79

67

75

68

140

123

97

84

63

52

46

40

M

3,206

103

6,360

Aug.

29

29

36

42

42

42

*41

38

36

36

36

36

41

46

29

8.4

8.4

8.4

8.4

5.1

2.1

2.1

2.1

2.1

2.1

2.0

2.0

2.0

2.0

2.1

2.1

620.4

20.0

1,230

Sept.

1*1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.2

2.2

*2.2

2.2

2.2

2.2

2.2

2.2

2.1

28

IS

45

45

44

44

43

43

42

42

42

41

44

584.5

19.5

1,160

Calendar year 1955: Max 5,040 Min 0.1 Mean 104 Ao-ft 75,000

Water year 1955-56: Max 5,O4O Min o.l Mean 193 Ac-ft 140, OOO

* Discharge measurement made on this day.

Note.--Doubtful or no gage-height record Dec. 25 to Jan. 16, Jan. 28 to Feb. 5, Feb. 8-11, 14-18, 

Feb. 25 to Mar. 3, Mar. 6, 7, 9, 13, 27, 28} discharge computed on basis of reconstructed gage-heig 

graph and records for North Pork Stanislaus River below Silver Creek.

iight
SAN JOAQUIN RIVER BASIN 327

North Fork Stanislaus River near Avery, Calif.

Location (revised). Lat 38°14'45", long 120°17'20", in sec. 35, T. 5 N., R. 15 E., on 

right bank 700 ft upstream from intake of Utica Canal, 3.3 miles upstream from Beaver 

Creek, and 5.1 miles northeast of Avery.

Drainage area.--163 sq mi.

Records available.--July 1914 to September 1922, November 1928 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,400 ft (from topographic map). 

July 1914 to September 1922 staff gage at same site at datum 0.05 ft lower.

Average discharge.--35 years (1914-22, 1929-56), 428 cfs (309,900 acre-ft per year).

Extremes.--Maximum discharge during year, 32,000 cfs Dec. 23 (gage height, 14.23 ft, from 

floodmarks), from rating curve extended above 4,500 cfs on basis of slope-area determination at gage height 13.8 ft; minimum daily, 15 cfs Nov. 12.

1914-22, 1928-56: Maximum discharge, that of Dec. 23, 1955; minimum daily, 5.5 cfs 

Dec. 6, 7, 1929.

Remarks.--Records good. F^ow regulated at low and medium stages by four reservoirs 

(combined capacity, 13,600 acre-ft). Diversion of a maximum of 10 cfs during summer 

from Beaver Creek into river above station.

Cooperation. Water-stage-recorder graph and eight discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years) . WSP 1215: 1938(M).

Rating table, water year 1955-56 (gage height, in feet, 

discharge, in cubic feet per second)

0.4 

.7 

1.0 

1.5 

2.0 

2.5 

3.0 

3.5

14

22

35

74

129

207

315

455

4.0

5.0

6.0

7.0

9.0

11.0

13.0

650

1,280

2,150

3,300

6,900

13,400

24,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

32

31

31

31

31

30

30

29

29

29

30

30

29

29

28

28

28

*20

16

16

16

16

16

16

16

16

16

16

16

16

16

733

23.6

1,450

Nov.

16

16

16

16

17

17

17

16

16

16

IS

15

T7

22

22

22

24

25

27

30

85

50

31

24

19

18

18

19

22

23

692

23.1

1,370

Dec.

41

35

29

24

15

117

96

56

108

88

66

67

59

51

52

52

62

81

330

578

491

8,510

23,400

4,240

1,920

2,570

1,620

1,070

860

735

680

48,111

1,552

95,430

Jan.

623

589

541

514

561

511

500

480

462

*458

480

514

522

794

2,130

2.620

1,450

*1,060

896

908

914

1,080

1,680

1,030

1,330

1,350

1,030

838

725

670

605

27,865

899

55,270

Feb.

557

537

525

525

511

480

455

443

416

425

416

428

425

419

404

368

371

360

350

350

335

340

395

342

315

312

295

292

305

11,696

403

23,200

Mar.

281

310

322

335

345

310

302

320

345

358

368

328

340

350

348

389

466

525

585

5S9

650

761

884

1,080

1,200

1.240

1,030

920

1,090

1,150

1,120

18,621

601

36,930

Apr.

778

597

 545 533

750

952

1,200

1,300

1,500

1,710

1,170

908

750

680

605

715

844

972

1,220

1,580

1,750

1,780

2,080

*2 J 200

2,110

1,870

1,390

1,230

1,210

1,370

36,299

1,210

72,000

May

1,580

1,840

2,200

4.850

2,190

2,020

1,820

1,460

1,550

1,350

1,310

1,120

1.010

*1,070

1,480

1,930

2,120

2,190

2,270

3,500

*3,290

3,930

3,950

3,340

2,710

2,720

2,580

2,160

2,170

2,250

*2,350

69,310

2,236

137,500

June

2,150

2,100

2,000

2.200

1,690

1,510

1,600

1,720

1,770

1,760

1,710

1,540

1,450

1,440

1,240

992

959

*999

1,120

896

827

827

860

832

750

660

705

670

650

561

38,188

1,273

75,740

July

449

S5F

345

315

295

274

250

246

240

228

202

179

156

146

137

130

127

118

127

129

127

118

121

239

202

175

139

112

96

81

22.

5,973

193

11,850

Aug.

64

59

56

61

66

*65

63

63

60

55

54

53

52

57

62

64

li

71

66

66

63

55

46

11

43

47

50

59

67

70

70

1,842

59.4

3,650

Sept.

65

63

62

61

61

57

54

53

57

*61

59

59

60

62

60

59

56

55

61

65

60

58

56

55

54

54

55

54

52

11

1,739

58.0

3,450

Calendar year 1955: Max 23,400 Mln 15 Mean 386 Ac-ft 279,200

Water year 1955-56: Max 23,400 M1*1 15 Mean 713 Ac-ft 517,800
328 SAN JOAQUIN RIVER BASIN

South Fork Stanislaus River at Strawberry, Calif.

Location.--Lat 38°12', long 120°01', in SW^ sec. 16, T. 4 N., R. 18 E., on right bank at 

Strawberry, 0.1 mile downstream from bridge on State Highway 108 and 0.5 mile downstream from Herring Creek.

Drainage area.--45.5 sq mi.

Records available.--October 1911 to January 1917, August 1938 to September 1956. Published as "near Confidence" 1911-13.

Gage.--Water-stage recorder. Altitude of gage is 5,350 ft (from topographic map). 

TT911-17, staff gage at site 1 mile downstream at different datum.

Average discharge.--18 years (1938-56), 128 cfs (92,670 acre-ft per year).

Extremes.--Maximum discharge during year, 2,130 cfs Dec. 23 (gage height, 7.00 ft); minimum daily, 25 cfs Dec. 8, 11-17.

1911-17, 1938-56: Maximum discharge, 3,900 cfs Nov. 21, 1950 (gage height, 9.25 ft), 

from rating curve extended above 1,100 cfs on basis of contracted-opening determination 

of peak flow at bridge 0.3 mile below station; minimum, 1.3 cfs Nov. 22, 23, 1946.

Remarks.--Records good. Flow regulated at low and medium stages by Strawberry Reservoir 

beginning in 1916 (capacity, 18,300 acre-ft). No diversion.

Cooperation.--Water-stage-recorder graph and eight discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 1215: 1945(M).

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, in cubic feet per second)

1.7 

2.0 

2.5 

3.0

3.5

4.0 

5.0 

6.0

346

505

950

1,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

59

61

61

61

59

58

58

58

58

58

58 

58

58

58

58

58

58

59

53

49

49

*44 

40

40

42

37

H

31

31

31

34

1,568

50.6

3,110

Nov.

37

38

38

38

38

38

38

37

37

37

37 

38

38

45

47

40

36

36

36

36

32

f

26

26

26

26

26

26

26

1,031

34.4

2,040

Dec.

30

30

30

30

30

*33

30

25

29

26

25

25

25

25

25

25

25

27

33

35

38

572 

1.140

310

£13

190

151

156

172

168

162

3,835

124

7,610

Jan.

151

132

119

110

112

105

98

95

88

82

85

91

91

119

404

551

*286

241

217

200

186

172

215

164

153

153

139

123

107

103

90

4,982

161

9,880

Feb.

85

82

80

79

80

76

73

71

69

67

67 

69

70

70

67

63

62

59

59

58

58

58

70

69

62

61

57

57

57

- -----

1,955

67.4

3,880

Mar.

57

57

57

57

61

69

69

69

69

69

69 

69

69

70

70

73

77

91

115

121

138

162 

176

217

252

265

250

230

250

*260

257

3,915

126

7,770

Apr.

224

192

164

141

138

180

235

274

325

352

328 

294

215

190

156

151

162

186

219

289

349

383

484

548

556

*434

315

265

257

296

8,302

277

16,470

May

349

420

548

840

474

389

338

284

289

252

243 

224

196

200

270

*395

*470

508

600

652

945

1.190 

1,180

1,100

1,010

970

945

840

865

940

720

18,646

601

36,980

June

*647

820

925

945

665

616

710

805

870

900

880 

742

737

688

665

656

540

652

*638

533

548

608 

638

616

536

530

608

616

548

420

20,302

677

40,270

July

313

284

268

259

254

243

230

232

226

200

172 

145

128

115

102

93

87

82

198

123

98

77 

62

59

82

70

55

57

63

63

63

4,503

145

8,930

Aug.

63

63

63

63

63

64

64

64

64

64

63 

63

63

63

63

63

63

63

63

63

64

66 

66

64

64

63

63

64

64

*64

64

1,971

63.6

3,910

Sept.

64

66

66

67

67

66

66

66

66

63

61 

63

66

66

66

66

66

64

66

66

66

66 

66

66

66

66

66

66

66

66

1,967

65.6

3,900

Calendar year 1955: Max 1,140 Mln 12 Mean 94.7 Ac-ft 68,580

Water year 1955-56: Max 1,190 Mln 25 Mean 199 Ac-ft 144,800

Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 329

Philadelphia Canal near Strawberry, Calif.

Location. Lat 38°11', long 12'0°03', in sec. 30, T. 4 N., R. 18 E., On right bank 250 ft 

downstream from diversion dam on South Pork Stanislaus River and 3 miles southwest of 

Strawberry Post Office.

Records available. October 1939 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 4,800 ft (from topographic map).

Average discharge.--17 years, 43.7 cfs (31,640 acre-ft per year).

Extremes. 1939-56: Maximum daily discharge, 64 cfs Dec. 11, 1941; no flow at times 

during each year except 1943, 1946-47, 1955-56.

Remarks.--Records excellent. Canal diverts from right bank of South Pork Stanislaus River 

for power development in Spring Gap powerplant of Pacific Gas & Electric Co.; tailrace 

empties into Middle Pork Stanislaus River above station at Sand Bar Plat.

Cooperation.--Water-stage-recorder graph and four discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

M 

34

34

34

34

34

34 

34

34

34

34

34

32

28

26

26

26

26

26

29

26

*27

25

25

25

24

19

15

15

15 

15

670

26.1

1,730

Nov.

15 

15

15

15

15

15

15 

15

15

15

16

16

19

31

33

33

26

25

25

25

21

16

16

16

16

16

16

16

16 

14

564

18.6

1,120

Dec.

' tf

15

15

*15

15

15 

15

20

23

22

19

17

17

17

17

17

17

16

16

16

25

26

21

26

30

30

30

35 

44

44

671

21.6

1,330

Jan.

44

44

44

44

46

43

H43

44

44

44

44

46

46

42

11

45

44

43

43

43

46

43

43

42

42

42

42

43

43

1,353

43.6

2,660

Feb.

«

54

54

54

54

54

53

53

54

54

54

54

54

56

49

44

44

44

44

43

44

49

53

52

53

54

54

54

1,476

50.9

2,930

Mar.

54 

55

55

56

57

52

49 

54

56

56

56

56

56

58

56

56

56

57

56

58

58

56

56

58

58

59

58 

57

58

1,767

57.0

3,500

Apr.

57 

57

56

57

56

59

59 

58

58

57

57

56

59

56

56

56

56

59

59

58

59

59

56

57

56

58

58 

58

1,734

57.6

3,440

May

56 

58

56

57

55

57

56 

56

57

56

56

56

56

57

56

*58

57

56

56

56

58

57

56

56

56

58

58

56

56 

57

M

1,780

57.4

3,530

June

55

56

54

56

59 

59

59

59

56

57

56

56

59

59

58

59

56

56

56

59

59

56

57

57

58

58

57 

57

1,732

57.7

3,440

July

i56

56

56

56

56 

56

56

57

56

56

58

56

56

56

56

56

6Q

56

56

57

57

56

59

57

52

54

56 

58

57

1,781

57.5

3,530

Aug.

56

56

56

56

56 

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

56

58

M56

1,800

58.1

3,570

Sept.

53 

56

56

56

58

56

fe

56

56

56

58

59

58

56

56

56

56

56

56

56

56

56

56

56

59

*59

59

59

59

1,745

58.2

3,460

Calendar year 1955 : Max 59 Min 1.7 Mean 39.2 Ac-ft 26,360

Water year 1955-56 : Max 60 Mln 14 Mean 47.2 Ao-ft 34,260

Discharge measurement made on this day.
330 SAN JOAQUIN RIVER BASIN

Tuolumne Canal near Long Barn, Calif.

Location. Lat 38°05', long 120°11', in sec. 25, T. 3 N., R. 16 E., on left bank 300 ft 

downstream from intake, 350 ft downstream from Lyons Reservoir on South Fork Stanislaus 

River, 2 miles west of Long Barn, and 14 miles northeast of Sonora.

Records available. October 1937 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 4,100 ft (from 

topographic map). Prior to June 1938, at site 200 ft downstream at different datum.

Average discharge.~19 years, 23.9 cfs (17,300 acre-ft per year).

Extremes. 1937-56; Maximum daily discharge, 55 cfs May 30, 1954; no flow at times.

Remarks.--Records excellent. Canal diverts from left bank of South Fork Stanislaus River 

into Tuolumne River basin for power and domestic supply in vicinity of Sonora.

Cooperation. Water-stage-recorder graph and four discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Moan

Ae-ft

Oct.

If

27

27 

27

27

27

27

27

27

27

27

27

27

27

27

26

22

20

19

18

*18

18

18

18

18

18

18

18

18

18

717

23.1

1,420

NOV.

1

18 

18

18

18 

18

18

18

18

18

17

16

16

17

20

Te

17

20

18

14

12

12

12

16

20

15

12

12

12

12

12

480

16.0

952

Dec.

12 

11

11

11 

14

13

*9.9

10

9.9

9.6

9.6

10

10

10

10

10

10

10

13

20

20

15

9.0

22

11

6.0

15

20

20

20

25.

407.0

13.1

807

Jan.

25 

24

24

25 

25

24

24

24

24

25

25

25

25

22 jy>

20

25

25

25

25

25

26

26

25

25

24

25

24

24

25

25

751

24.2

1,490

Feb.

25 

28

30

It

30

31

31

31

31

31

31

31

32

33

35

37

35

32

34

34

32

23

33

33

33

33

33

33

907

31.3

1,800

Mar.

33 33-

33

33 

34

35

35

35

35

35

35

35

35

35

35

35

34

34

35

35

35

35

35

35

35

35

34

36

37

37

58

1,081

34.9

2,140

Apr.

37 

37

37

37 

37

37

39

40

42

3?

37

38

40

39

38

38

39

39

40

41

41

40

40

40

40

40

*40

39

39

39

1,169

39.0

2,320

May

40 

41

41

41 

40

39

344$

40

40

40

39

39

40

41

49

*54

53

52

52

52

52

54

46

40

41

40

40

41

42

42

1,345

43.4

2,670

June

*! 4?

43

41 

40

40

40

41

41

41

40

41

41

40

40

40

40

39

4T

40

40

41

40

41

41

40

41

40

40

40

1,219

40.6

2,420

July

41 

38

42

42 

44

44

44

44

44

44

43

44

45

44

44

38

27

29

34

36

36

33

30

27

26

26

28

30

30

34

35-

1,146

37.0

2,270

Aug.

37 

39

3?

39 

39

38

38

39

39

39

39

39

39

39

39

39

39

37

35

35

35

35

35

35

35

35

35

*35

35

35

35

1,151

37.1

2,280

Sept.

35 

34

34

34 

35

35

35

34

33

34

35

35

34

35

34

33

34

36

36

35

35

35

35

32

30

28

26

24

22

22

979

32.6

1,940

Calendar year 1955: Max 54 Mln 6.0 Mean 26.2 Ae-ft 18,950

Water year 1955-56: Max 54 Min e.O Mean 31.0 Ac-ft 22,510

Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 331

South Fork Stanislaus River near Long Barn, Calif.

Location. Lat 38°05', long 120°11', in sec. 25, T. 3 N., R. 16 E., on left bank 600 ft 

downstream from Lyons Dam, 2 miles west of Long Barn, and 14 miles northeast of Sonora.

Drainage area. 67.2 sq mi.

Records available. November 1937 to September 1956.

Gage.--Water-stage recorder and masonry control. Altitude of gage is 4,100 ft (from topographic map).

Average discharge.--IB years (1938-56), 89.8 cfs (65,010 acre-ft per year).

Extremes.--Maximum discharge during year, 3,160 cfs Dec. 23 (gage height, 8.00 ft), from 

rating curve extended as explained below; minimum daily, 1.5 cfs Oct. 22-25, Dec. 1-5, 

7, July 18. 22.

1937-56: Maximum discharge, 4,900 cfs Nov. 21, 1950 (gage height, 9.3 ft), from 

rating curve extended above 1,400 cfs on basis of computed flow over Lyons Dam; no flow 

at times during 1937-39, 1952.

Remarks. Records good between 150 and 1,500 cfs; fair above and below this range. Flow 

regulated by Lyons and Strawberry Reservoirs (combined usable capacity, 23,700 acreft). Tuolumne Canal (see preceding page) diverts at Lyons Dam; Philadelphia Canal 

(see p. 329) diverts 12 miles above station into Middle Fork Stanislaus River.

Cooperation. Water-stage-recorder graph and seven discharge measurements furnished by 

Pacific Gas & Electric 3o. in connection with a Federal Power Commission project.

Revisions (water years ). WSP 1215: 1938(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

0.8 

.9

0.6 

3.5

0.8 

.9

1.0 

1.2 

1.5 

2.0

0.6 

3.5

7.5

18

38

85

2.5

3.0 

4.0 

5.0 

6.0 

7.0

150

240

 480

840

1,400

2,170

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

1-4

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.7

37T

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

 1.5

T75

1.5

1.5

1.7

1.7

1.7

1.7

1.7

1.7

51.9

1.67

103

Nov.

1.7

T7T

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

2.0

rr1.7 

1.7

1.7

1.7

1.7

1.7

1.7

1.7

51.3

1.71

102

Dec.

T75- 1.5

.5

.5

.5

.7

* .5

.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

2.0

2.3

2.7

2.3

1.7

1.7

3.5

1,990 

1,060

537

799

538

350

290

232

199

6,035.5

195

11,970

Jan.

173

163

135

124

210

171

140

132

112

105

108

111

112

204

481

*928 456"

340

260

236

226

241

438 

299

370

435

388

285

230

190

156

7,997

258

15,860

Feb.

131

107

85

82

75

67

56

51

44

40

36

34

35

35

29

23- 16

29

30

30

25

33

111 

66

49

42

34

31

32

1,460

50.3

2,900

Mar.

30

30

31

33

39

44

46

38

36

36

32

31

28

59

28

28

30

37

60

71

78

96

116

155

190

214

TS5

156

171

*199

205

2,502

80.7

4,960

Apr.

169

116

87

72

68

87

138

190

236

292

250

178

127

106

89

93

107

128

150

210

294

314

418 

477

540

480

*343

258

220

236

6,473

216

12,840

May

220

345

444

849

512

382

343

275

285

266

236

220

174

150

T8T

290

*408

435

531

531

836

1,080

1,170 TTTTO

1,020

965

960

764

800

850

*822

17,516

565

34,740

June

507

776

840

I6"8~ 935

531

612

700

760

792

665

636

630

623

537

456

468

262 79~0"

*402

435

442

450 

456

465

415

430

504

474

348

17,009

567

33,740

July

234

ro

169

153

150

129

117

122

113

103

72

46

27

15

7.5

5.0

2.7

6~1.5

46

16

1.5

2.3

2.3

2.0

2.0

2.0

2.0

2.0

2.0

2.0

1,792.8

57.8

3,560

Aug.

2.0

577J

2.0

2.0

2.0

2.0

2.0

2.0

2.7

57T

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

Z.O

2.0 

2.0

2.0

2.0

2.0

*2.0

2.3

2.3

2.0

63.6

2.05

126

Sept.

2.0

2.0

2.0

2.0

2.0

'2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.3

2.7

2.7 

3.5

TTS

2.0

2.7

2.0

1.7

T7f

63.6

2.12

126

Calendar year 1955: Max 1,990 Mln 1.5 Mean 51.1 Ac-ft 37,010

Water year 1955-56: Max 1,990 Mln 1.5 Mean 167 Ac-ft 121,000

* Discharge measurement made on this day.
332 SAN JOAQUIN RIVER BASIN

Melones Reservoir at Melones Dam, Calif.

Location. La t 37°57'15", long 120°30'45", near center of sec. 11, T. IN., R. 13 E., at 

gate tower near left bank at Melones Dam on Stanislaus River, 0.1 mile downstream from 

Bear Creek.

Drainage area. 897 sq mi.

Records available. June 1927 to September 1956.

Gage. Staff gage read once daily. Datum of gage is at mean sea level (levels by Pacific 

Gas & Electric Co.).

Extremes.--Maximum contents observed during year, 115,400 acre-ft June 29 (elevation, 

736.5 ft); minimum observed, 10,500 acre-ft Oct. 10 (elevation, 639.4 ft).

1927-56: Maximum contents observed, 115,800 acre-ft May 27, 1951 (elevation, 736.7 

ft); minimum observed, 3,740 acre-ft Sept. 16, 1951 (elevation, 616.3 ft).

Remarks.--Reservoir is formed by concrete overflow dam; storage began Aug. 21, 1926; dam 

completed in December 1926. Capacity for power development 1 mile below dam is 106,100 

acre-ft between elevations 628.0 ft (minimum operating level) and 735.0 ft (top of drumtype spillway gates) above mean sea level; usable capacity for irrigation, 110,000 acreft between elevations 610.0 ft (floor of outlet tunnel) and 735.0 ft above mean sea 

level. Figures given herein represent total contents at 8 a.m., of which 2,630 acre-ft 

are not available for release. Released water flows down Stanislaus River to Goodwin 

Dam, where it is diverted into Oakdale and South San Joaquin Canals for irrigation.

Cooperation.--Records of contents furnished by Pacific Gas & Electric Co. in connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, in feet, 

and contents, in acre-feet)

640

645

650

655

660

665

670

675

680

685

690

10,700 

12,900 

15,400 

18,300 

21,500 

25.OOO 

28,900 

33,100 

37,600 

42,400 

47,600

695

700

705

710

715

720

725

730

733

736.5

53,300

59,100

65,400

72,200

79,500

86,900

95,000

103,500

108,900

115,400

Contents, in acre-feet, at 8 a.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

(t)

(*)

Oct.

10,900

10,900

11,000 

11,000

10,900

10,900

10,900

10,700

10,600

10,500

10,600

10, 800

10,800

10,800

10,700

10,700

10,700

10,700

10,700

10,700

10, 600

10,600

10,600

10,600

10,600

10,700

10,700

10,700

10,700

10,700 

10,700

640.0

-200

Hov.

10,700

10,700

10, 600 

10,600

10, 600

10,800

10, 800

10, 800

10,800

10,800

10,800

10,800

10,800

10,800

10,900

10,800

10,800

10,900

10,900

10,900

10,800

11,000

11,500

11,200

10,900

10,800

10,600

10,800

10,800

11,000

640.8

+300

Dec.

10,700

11,500

11,400 

11,500

10,600

11,000

10, 800

12,700

12,100

12,500

12,400

11,700

11,100

11,200

11,100

10,700

10,900

11,100

10,700

14,500

18,200

22,600

93,600

108,900

99,400

99,900

100,900

97,300

96,200

96,500 

95,000

725.0

+84,000

Jan.

94,500

94,300

94,000 

95,600

95,000

95,200

92,800

91,200

89,300

86,800

85,600

86,600

87,600

89,600

96,200

100,900

95,800

95,800

94,800

94,800

94,800

94,500

97,500

96,500

96,500

96,700

98,000

96,200

95,300

94,600 

94,500

724.6

-700

Feb.

94,000

93,600

95,500 

95,500

95,100

93,000

92,800

92,700

92,500

92,500

92,300

92,200

92,200

92,000

91,800

91,700

91,200

90,900

90,500

90,100

89,700

89,500

89,700

91,200

91,400

91,700

91,800

91,700

91,500

722.9

-2,800

Mar.

91,400

90,900

90,500 

90,200

89,900

89,700

89,400

89,000

88,500

88,200

87,900

87,600

87,200

86,800

86,300

85,900

85,400

85,400

85,700

86,300

86,800

87,700

89,100

90,900

93,100

94,100

94, 100

94,000

95,800

94,100 

94,300

724.6

+2,800

Apr.

94,300

93,800

95,100 

95,000

92,800

95,100

95,600

94,100

94,500

94,800

94,800

94,500

93,800

95,600

93,500

95,100

95,500

95,600

94,500

94,500

94,800

95,200

95,700

96,200

96,500

96,200

96,000

95,200

94,600

94,600

724.8

+500

May

94,600

95,200

95,700 

97,700

98,200

96,700

96,200

95,800

95,500

95,700

95,200

95,000

94,600

94, 500

94,500

95,000

95,800

96,200

96,500

96,700

97,500

98,500

99,400

99,200

98,400

98,000

98,000

97,300

97,000

97 700 

98^000

726.8

+3,400

June

97,800

97,500

97,500 

97,800

97,500

97,200

96,800

97,200

97,500

97,700

97,800

97,500

97,000

96,700

98,400

98,400

99,400

99,900

100,400

101,800

101,200

100,900

100,700

105,600

106,900

109,800

112,100

112,400

115,400

114,500

756.0

+16,500

July

114,500

115,900

115,700 

115,700

115,500

115,500

113,400

115,200

115,200

115,200

115,200

112,800

112,400

111,200

112,400

112,400

112,200

111,700

110,800

110,600

110,400

110,200

109,500

110,000

111,900

112,600

112,600

112,200

112,200

112,200 

111,500

754.4

-5,000

Aug.

110,400

109,700

108,200 

106,900

105,500

105,800

102,500

100,700

88,200

97,500

95,500

95,500

91,200

89,000

86,800

84, 500

82,100

79,900

77,700

75,500

75,200

70,700

68,200

65,900

65,600

61,500

59,500

56,900

54,900

52,900 

51.100

693.1

-60,400

Sept.

42,500

47.500

45,800 

45,900

42,000

40, 100

38,900

56,600

54,700

52,800

51,000

29,200

27,500

26,500

26,000

25,400

24,500

24,400

25,700

22,600

21,400

20,800

20,100

19,600

18,900

18,200

17,500

16,800

16,200

15, 200

649.5

-55,900

Calendar year 1955.................... * -tS4,200

Water year 1955-56.................... * +4,500

t Elevation, in feet, at end of month. 

* Change in contents in acre-feet.
SAN JOAQUIN RIVER BASIN 333

Stanislaus River below Melones powerhouse, Calif.

Location.--Lat 37°56'50", long 120°31'45", near line between sees. 10 and 15, T. 1 N., R. 

13 E., on right bank 300 ft downstream from powerhouse, 0.5 mile upstream from Bear 

Gulch, and 1 mile downstream from Melones Dam.

Drainage area,.--898 sq mi.

Records available.--January 1931 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 500 ft (from topographic map).

Average discharge.--25 years, 1,553 cfs (1,124,000 acre-ft per year).

Extremes.--Maximum discharge during year, 62,800 cfs Dec. 23 (gage height, 29.0 ft, from 

floodmarks), from rating curve extended above 14,000 cfs on basis of computed flow over 

Melones Dam; minimum daily, 15 cfs Oct. 11, Nov. 5.

1931-56: Maximum discharge, that of Dec. 23, 1955; minimum daily, 0.4 cfs Jan. 19, 

20, 1943.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by Melones powerhouse, Melones Reservoir (see preceding page), and several smaller reservoirs above station. Several diversions above station.

Cooperation. Water-stage-recorder graph and 13 discharge measurements furnished by Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 843: 1936(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. ZZ Dec. 35 to Sept. 30

3.0 

3.3

2.7 

3.0

33

39

81

152

3.5 

4.0 

5.0 

6.0 

7.0

310

510

990

1,660

3,480

6.8 600

8.0 1,390

9.0 2,160

11.0 4,900

14.0 10,800

18.0 21,200

22.0 34,700

25.0 46,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8 

9

10

11

13 

13

14

15

16 

17

18

19

20

21

33

33 

24

25

26

37

38

29

30 

31

Total

Mean

Ac- ft

Oct.

286 

286

292

286

286

237

207

177 

172

51

15

130 

104

140

104

106 

*106

104

126

137

103

101

97 

90

59

82

82

94

105 

94

99

4,348

140

8,630

Nov.

94 

95

84

38

I5.

106

61

84 

84

85

84

85 

85

*129

178

156 

126

155

176

178

179

127

250 

271

203

176

83

130

131 

228 ------

3,876

129

7,690

Dec.

97 

311

403

259

57.

352

484

*720 

720

494

730

725 

278

393

420

203 

234

471

705

740

750

2,450

*45,000 

20,000

5,000

14,000

12,000

8,000

4,500

4, 200 

3,500

128,196

4,135

254,300

Jan.

3,OOO 

2,500

2,300

2,200

2,900

3,700

3,700

3,500 

*3,400

3,020

1,880

1,570 

1,570

1,570

*4,670

*12,400 

*7,010

5,000

3,920

3,640

3,720

3,540

7,880 

5,920

5,840

7,010

8,100

5,580

4,390

3,750 

3,320

133,500

4,274

262,800

Feb.

2,920 

2,630

2,450

2,290

2,200

2,070

*1,950

1,860 

1,770

1,710

1,670

1,650 

1,620

1,590

1,570

1,570 

1,560

1,560

1,550

1,550

1,550

1,550

,560 

,580

,580

,590

,600

1,580

1,580

-----

51,910

1,790

103, 000

Mar.

1,580 

1,560

1,570

1,570

1,570

1,570

1,570

1,560 

*1,560

1,560

1,560

1,560 

1,560

1,560

1,550

1,550 

1,550

1,550

1,560

1,560

1,570

1,570

1,570 

1,610

2,390

3,090

3,060

2,830

2,800

*3,020 

3,160

57,900

1,868

114, 800

Apr.

2,950 

2,500

2,220

2,000

2,000

2,180

3,560

2,950 

3,290

4,020

3,750

3,190 

2,670

2,460

2,270

3,180 

2,260

2,410

2,610

3,150

3,910

4,210

4,880 

5,440

5,980

5,750

*4,930

4,120

3,740

3,720

100, 300

3,343

198,900

May

3,970 

4,480

5,110

9,630

8,280

6,170

5,640

4,980 

4,720

4,760

4,280

3,980 

3,570

5,300

3,370

4,150 

5,090

5,450

5,770

6,100

7,450

9,350

10, 600 

10, 400

9,040

8,430

8,500

7,310

6,510

6,730 

7,390

194,410

6,271

385,600

June

7,770 

6,370

6,600

7,130

5,870

5,140

4,870

5,940 

5,500

5,720

5,920

5,430 

4,980

4,210

4,100

3,910 

3,600'

3,480

3,720

3,970

3,780

3,670

2,540 

2,090

2,100

2,130

2,360

3,130

2,770

2,050

130, 830

4,561

359,500

July

2,710 

2,360

2,140

1,960

1,870

1,820

1,770

1,750 

1,770

1,780

1,730

1,630 

1,400

1,160

1,100

1,350 

1,540

1,450

1,490

1,480

1,480

1,480

1,090 

625

851

1,350

1,540

1,210

1,020

1,030 

1,090

46,686

1,506

92,600

Aug.

1,110 

1,330

1,260

1,260

1,260

1,250

1,260

*1,260 

1,320

755

1,490

1,520 

1,500

1,490

1,500

1,530 

1,530

1,520

1,510

1,500

1,490

1,490

1,490 

1,480

1,470

1,460

1,450

1,330

1,500

1,300 

1,230

42,545

1,372

84,390

Sept.

1,210 

1,230

1,220

1,250

1,250

1,220

1,210

1,240 

1,250

1,220

1,220

1,310 

960

695

670

670 

756" 665

954

954

828

750

750 

745

740

755

*755

755

750

725

28,451

948

56,450

Calendar year 1955: Max 45,000 Mln 15 Mean 1,220 Ac-ft 882,900

Water year 1955-56: Max 45,000 Mln 15 Mean 2,519 Ac-ft 1,829,000

* Discharge measurement made on this day.

Note. No gage-height record Dec. 25 to Jan. 9, Feb. 25, 24; discharge estimated on basis of flow 

over Melones Dam, power output from Melones powerhouse, and records for station at Rlpon.
334 SAN JOAQUIN RIVER BASIN

South San Joaquin Canal near Knights Ferry, Calif.

Location. Lat 37°51'20", long 120°38'15", in sec. 15, T. 1 S., R. 12 E., on left bank

 6.8 mile downstream from headgate at Goodwin Dam and 4 miles upstream from Knights 

Perry.

Records available.--May 1914 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 345 ft (from topographic map). Prior to Mar. 12, 1915, staff gage 100 ft downstream at different datum. 

Mar. 12, 1915, to July 1, 1921, staff gage at present site and datum.

Average discharge. 37 years (1914-30, 1931-32, 1936-56), 389 cfs (281,600 acre-ft per 

year).

Extremes. 1914-56: Maximum daily discharge, 1,220 cfs June 28 to July 3, 1953; no flow 

at times each year except 1951.

Remarks. Records good except those for period of backwater, which are poor. Canal

 diverts from right bank of Stanislaus River at Goodwin Dam for irrigation in Oakdale 

and South San Joaquin Irrigation Districts.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17 

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

265

265

269

*273

271

268

235

213

192

135

45

18

37

40

43

125 

113 

102

80

68

84

76

73

71

67

60

59

47

31

34

37

3,696

119

7,330

Nov.

56

70

3.9

0

4.1

15

16

16

16

16

18

18

19

20

38

107 

186 

115

133

142

152

118

.7

.5

.5

2.3

3.6

.4

.6

4.8

1,292.4

43.1

2,560

Dec.

0.5

0

5.8

18

17

18

18

18

18

18

18

18

18

18

17

16 

35 

157

197

54

.3

37

147

181

0200

C200

C200

o50

.1

.1

2. 4

1,697.2

54.7

3,370

Jan.

0.1

.5

0

0

5.0

.4

.2

.7

0

0

0

*0

0

.2

.5

.1 

0 

0

0

0

0

0

0

0

0

.1

0

0

0

0

0

7.8

0.25

15

Feb.

0

0

14

343

529

539

591

686

*708

743

780

663

376

106

.1

0 

0 

*1.0

2.9

0

0

0

0

0

.1

0

0

0

0

6,082.1

210

12,060

Mar.

0

0

0

0

0

.6

1.5

.8

0

.7

3.1

0

20

*194

256

532

875 

930

954

1,000

1,040

1,100

1,150

1,150

1,160

1,160

1,150

1,150

1,150

1.170

1,140

17,287.7

558

34,290

Apr.

1,000

902

895

926

944

1,040

1,110

1,130

1.140

1,110

797

608

605

604

601

600 

600 

600

721

839

927

938

972

983

996

993

982

863

747

745

25,918

864

51,410

May

828

877

870

791

791

777

538

li

309

*607

670

709

747

808

863

919 

1,020 

1,100

1,140

1,160

1,170

1,170

1,170

1,170

1,160

1,170

1,170

1,170

1,100

1,110

864

27,982

903

55,500

June

1,150

1,170

1,170

1,170

1,170

1,170

*1,170

1,170

1,130

1,020

1,020

1,080

1,150

1,160

1,130

1,100 

1,010 

1,090

1,140

1,160

1,170

1,170

1,170

1,170

1,170

1,170

1,180

1,170

1,180

1,180

34,260

1,142

67,950

July

1.180

213

.3

.2

.2

.2

.1

.1

0

0

0

0

0

0

37

707 

899 

997

1,100

1,100

1,090

1,090

825

19

.3

.3

.2

72

329

485

588

10,732.9

346

21,290

Aug.

619

717

789

787

783

780

786

789

819

885

989

1,060

1,060

1,060

1,060

1,080 

1.090 

1,090

1,090

1,080

1,070

1,020

1,060

1,060

1,050

1,040

1,040

*986

929

922

894

29,484

951

58,480

Sept.

870

885

885

888

891

888

884

899

901

892

885

908

846

497

427

426 

426 

450

623

623

594

488

483

482

481

478

475

471

469

469

19,884

663

39,440

Calendar year 1955 : Max 1.200 Mln o Mean 449 Ac-ft 325,100

Water year 1955-56 : Max 1,180 Mln o Mean 487 Ac-ft 353,700

Discharge measurement or observation of no flow made on this day. 

Backwater from earth slide.
SAN JOAQUIN RIVER BASIN 335

Oakdale Canal near Knights Ferry, Calif.

Location. La t 37°51'30", long 120° 38'00", in SEi sec. 10, T. IS., R. 12 E., on left

bank 1,835 ft downstream from headgate at Goodwin Dam and 4 miles upstream from Knights 

Ferry.

Records available.--May 1914 to September 1956.

;e.--Water-stage recorder. Altitude of gage is 350 ft (from topographic map). Prior 

To Apr. 29, 1916, staff gage at site 1,000 ft upstream at different datum. Apr. 29 to 

July 3, 1916, staff gage and July 4, 1916, to Apr. 3, 1949, water-stage recorder, at 

present site at datum 0.18 ft higher.

Average discharge.--38 years (1914-32, 1936-56), 132 cfs (95,560 acre-ft per year).

Extremes. 1914-56; Maximum daily discharge, 523 cfs June 24, 30, July 25, 26, 1956; no 

flow during periods in each year.

Remarks. Records excellent above 100 cfs and good below. Canal diverts water from left 

Eanlc of Stanislaus River at Goodwin Dam for irrigation In Oakdale Irrigation District.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

5.9 

4.3

£»0

0

0

0

.1

0

.1

0

0

0

3.1

14

4.1

0

.1.1

.4

.5

.3

0

0

0

.1

.3

4.9:

21

T.l

0

65.4

2.11

130

Nov.

0 

5.6

30

30

25

13

20

17

19

21

23

24

26

28

12

26

.1

0

0

0

0

0

.2

.7

.6

2.5

4.0

4.0

4.3

4.0

360.0

12.0

714

Dec.

H3.8

3.8

3.6

3.6

3.6

3.6

3.6

3.1

3.1

3.1

2.9

2.9

2.9

2.9

2.7

2.7

2.7

*2.7

2.7

3.6

3.8

2.3

_u*

1.3

.6

.4

.4

.4

. 8

81.8

2.64

162

Jan.

0.6 

.5

.4

.4

2.8

.6

.5

.6

.5

.5

.5

.4

.4

.8

15

7.5

.6

.5

.4

.5

.5

.6

.6

.5

.7

.7

.6

.5

.4

.4

^1

39.8

1.28

79

Feb.

0 

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

7

4

5

4

3

2

2

- --- -

2.7

0.09

5.4

Mar.

0.2 

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

Q.

27

*166

212

314

417

420

419

417

418

418

426

430

438

463

455

454

455

463

467

7,280.3

235

14,440

Apr.

467 

466

467

468

469

472

471

468

468

467

254

5.2

4.8

4.8

4.5

*52

144

367

474

476

475

474

473

324

5.9

14

14

13

13

46

8,321.2

277

16,500

May

247 

455

457

100

108

324

470

470

487

*487

484

484

487

489

489

491

494

497

499

498

498

500

505

504

503

505

505

505

509

509

509

14,069

454

27,910

June

508 

509

509

509

507

508

*509

509

509

509

509

512

513

514

518

514

517

518

521

522

521

522

522

523

522

521

522

522

522

523

15,464

515

30,670

July

521 

520

520

521

521

520

521

521

521

522

522

521

521

521

521

477

431

431

431

429

428

427

458

513

523

523

521

521

520

494

467

15,408

497

30,560

Aug.

463

467

468

462

461

460

461

460

490

478

497

487

474

470

472

477

474

469

467

466

474

4$ 8

467

462

460

458

451

*412

395

394

568

14,258

460

28,280

Sept.

347 

548

347

546

546

545

544

347

347

545

544

307

228

187

188

189

188

196

269

281

265

217

217

217

217

216

216

214

213

207

8,038

266

15,940

Calendar year 1955 : Max 497 Mln 0 Mean 168 Ac-ft 121,500

Water year!955-56 : Max 523 Mln o Mean 228 Ac-ft 165,400

Discharge measurement or observation of no flow made on this day.
336 SAN JOAQUIN RIVER BASIN

Stanislaus River at RIpon, Calif.

Location. Lat 37°43'50", long 121°06'35", in SE^ sec. 29, T. 2 S., R. 8 E., on left bank 

15 ft downstream from railroad bridge, 1 mile southeast of Ripon, and 15 miles upstream 

from mouth.

Records available. October 1940 to September 1956 in reports of Geological Survey. April 

1940 to December 1956 in reports of California Department of Water Resources.

Sage. Water-stage recorder. Datum of gage is at mean sea level, unadjusted (levels by 

Modesto Irrigation District). Prior to Nov. 17, 1953, at site 100 ft upstream at same 

datum.

Average discharge. 16 years, 1,198 cfs (867,300 acre-ft per year).

Extremes. Maximum discharge during year, 62,500 cfs Dec. 24 (gage height, 63.25 ft); minimuiri, 103 cfs Oct. 8.

1940-56; Maximum discharge, that of Dec. 24, 1955; minimum, 94 cfs Aug. 10, 1955.- 

Flood of Feb. 12, 1938, reached a stage of 64.4 ft, from floodmarks. Flood of

Apr. 1, 1940, reached a stage of 61.1 ft, from floodmarks.

Remarks. Records good except those for period of no ga.ge-height record, which are fair. 

Flow regulated by reservoirs and powerplants above station (see Remarks for station 

below Melones powerhouse). South San Joaquin Canal (see p. 334 ) and Oakdale Canal (see 

preceding page) divert at Goodwin Dam 34 miles upstream. Diversions for irrigation of 

about 2,300 acres below Goodwin Dam and above Ripon.

Cooperation. Nine discharge measurements furnished by California Department of Water 

Resources.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second)

(Shifting-control method used Oct. 1 to Nov. 25, Mar. 26 to May 10, May 20 to 

June 6, June 11, 12, July 15 to Aug. 31)

Oct. 1 to Dec. 24 Dec. 24 to Sept. 30

37.3

38.0

39.0

41.0

47.0

53.0

108

214

393

824

2,620

5,150

55.0

56.0

57.0

58.0

60.0

62.0

6,930

9,090

12,600

17,700

31,500

50,000

38.0

40.0

44.0

50.0

154

554

1,570

3,770

52.0 4,890

54.0 6,920

56.0 12,300

59.0 26,300

Discharge, In oubio feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac-ft

Oct.

134 

144

122

113

115

121

111

108

ITS

113

122

127

*122

130

132

163

203

158

146

142

140

134

144

*148

140

139

138 

157

145

139

134

4,197

135

8,320

Nov.

132 

138

139

144

160

164

160

150

136

133

132

136

151

164

164

*157

158

163

151

138

127

122

122

121

109

294

188 

*265

201

206

4,925

164

9,770

Dec.

228

188

245

374

472

288

484

562

776

849

626

*740

750

540

464

478

440

348

319

527

784

897

3,060

»a47,OQO

a22,800

as, 670

a!7,500 

* 13, 400

*7,540

5 450

s!l20

139,019

4,484

275,700

Jan.

4,910 

4,030

*3,720

3,290

3,180

4,690

4,910

4,560

4,140

3,880

3,550

2,560

*2,240

2,210

2,940

6,270

11,600

8,290

6,080

*4,960

4,540

4,270

4,400

7,600

6,870

6,690

8,060 

8,810

6,540

*5,460

4,600

160,050

5,163

317,500

Pet.

3,980 

3,510

3,190

2,940

2,470

2,230

2,080

1,900

1,700

1,580

1,450

1.570

1,410

1,580

*1,780

1,830

1,820

1,800

1,790

1,790

1,780

1,770

1,880

2,090

1,910

2,010

*1,930 

1,830

1,790

59,190

2,041

117,400

Mar.

1,790 

1,Y70

1,760

1,750

1,720

1,710

1,700

1,690

1,700

1,690

1,690

1,700

*1,700

1,640

1,460

1,310

1,010

740

649

611

554

473

418

352

332

*738

1,560

1,640

1,490

1,490

1,670

40,507

1,307

80,340

Apr.

1,900 

1,860

1,540

1,250

999

918

937

1,240

*1,660

1,940

2,520

2,980

2,890

2,610

2,500

2,350

2,170

2,080

2,000

1,890

2,150

2,650

2,890

3,390

4,000

4,690

5.060 

4,480

3,660

3,370

74,574

2,486

147,900

May

3,230 

3,100

3,330

4,000

7,800

8,660

5,800

*5,160

4,920

4,380

4,060

3,580

3,120

2,720

2,570

2,410

2,960

3,560

3,800

4,090

4,420

5,260

7,080

9,750

9,810

7,790

7,000 

6,870

*5,840

5,230

5,530

157,450

5,078

512,300

June

5,850 

$,400

5,060

5,060

5,360

4,660

3,880

5,580

5,700

4,020

4,260

4,380

4,060

5,550

*2,910

2,760

2,180

2,170

2,180

2,390

2,490

2,350

2,240

1,500

1,180

1,110

1,080 

1,200

1,800

2 ,360

94,720

3,157

187,900

July

2.000 

1,540

1,930

1,850

1,730

1,670

1,550

1,530

*1,530

1,480

1,470

1,450

1,590

1,250

1,030

862

598

477

394

352

528

510

310

266

249

266

692 

1,070

894

528

372

31,548

1,011

62,180

Aug.

'S4"9~ 290 

233

222

244

240

*222

228

213

172

188

206

190

154

T59

168

190

195

205

185

179

167

154

156

195

195

190 

158

168

161

1 QT J.OJ.

6,055

195

12,010

Sept.

181 

174

176

170

176

179

201

210

183

*204

170

177

167

161

179

188

172

158

192

217

199

190

192

176

177

163

165 

170

154

m

5,400

180

10,710

Calendar year 1955: Max 47,000 Mln 103 Mean 751 Ao-ft 543,400

Water year 1955-56: Max 47,000 Mln 108 Mean 2,124 Ac-ft 1,542,000

Discharge measurement made on this day.

No gage-height record; discharge estimated on basis of unpublished records for nearby stations.
SAN JOAQUIN RIVER BASIN 337

San Joaquin River near Vernalis, Calif.

Location. Lat 37°40'34", long 121 "15"51", on left bank 30 ft upstream from Durham Ferry 

highway bridge, 3 miles downstream from Stanislaus River, and 3.4 miles northeast of 

Vernalis, San Joaquin County.

Drainage area.--14.010 sq mi, approximately.

Records available. July 1922 to September 1956 (1922-23 and 1925-29, low-water records 

only).

Sage.--Water-stage recorder. Datum of gage is 8.4 ft above datum of Corps of Engineers. 

July 1922 to September 1946 at various sites on or within 100 ft of Durham Ferry bridge. 

Prior to Apr. 1, 1931, at different datum.

Average discharge.--28 years (1923-24, 1929-56), 4,862 cfs (3,520,000 acre-ft per year).

Extremes.--Maximum discharge during year, 50,900 cfs Dec. 25 (gage height, 26.89 ft); minimum, 600 cfs Oct. 5.

1922-56: Maximum discharge recorded, about 79,000 cfs Dec. 9, 1950 (gage height, 

27.75 ft), including flow through breaks in levee; minimum discharge, 184 cfs Aug. 14, 

1931.

Remarks.--Records good. Discharge measurements generally made twice a month. Natural 

flow of stream affected by storage reservoirs, power developments, ground-water withdrawals and diversions for irrigation; low flows consist mainly of return flow from 

irrigated areas. Records of chemical analyses and water temperatures for the water 

year 1956 are given in WSP 1453.

Cooperation,--Fourteen discharge measurements furnished by California Department of Water 

Resources. One discharge measurement furnished by Corps of Engineers.

Revisions (water years), WSP 831: 1936. WSP 931: 1940.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second) 

(Shifting-control method used Dec. 8-12)

Oct. 1 to Dec. 12 Dec. 13-25

5.8

6.5 

7.0 

8.0

585

970

1,290

2,050

7.5 

8.0

11.0

15.0

1,480

1,880

4,700

9,520

19.0

22.0

25.0

27.0

16,200

23,300

36,500

52,000

7.7

8.0

10.0

14.0

Dec. 26 to Sept. 30

1,490

1,680

3,280

7,730

18.0

22.0

25.0

27.0

13,900

23,300

36,500

52,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

635 

702 

718

660

615

635

650

660

685

724

762

773

718

685

756

839

923

856

822

940

994

994

994

892

839

822

874

892

922

922

874

24,732

799

49,150

Nov.

795 

800 

1,040

1,180

1,210

1,230

1,160

970

928

854

718

696

729

773

812

874

1,090

1,210

1,270

1,270

1,210

1,130

1,190

1,260

1,260

1,280

1,300

1.360

1,270

1,270

52,119

1,071

65,710

Dec.

1.520 

1,400 

1.420

1,420

1,560

1,490

1,420

1,640

1,780

1,970

1,910

1,800

1,900

1,850

1,660

1,610

1,580

1,510

1,740

1,720

1,920

2,040

5,210

15,500

40,400

47.400

59,500

42,300

40 , 900

57,000

35,200

338,070

10,910

670,600

Jan.

54.000 

52,900 

51,400

29,700

28,200

27,700

28,600

28,600

27,900

27,000

25,800

24,400

25,000

21,500

20.200

21,000

24,400

27,600

27,600

27,000

26,500

25,400

23,900

23,600

25,200

25,700

27,000

29,600

50,800

51,000

31,400

838,400

27,050

*1,665

Feb.

51.300 

50,400 

28,500

26,100

24,000

22,000

20,300

18,900

17,800

16,600

15,700

15,100

14,600

14,400

14 , 400

14,800

14,900

14,800

14,700

14,000

13,500

12,900

12 . 800

12,900

12 , 900

12,900

13,200

15,300

15,600

501,100

17,280

995,900

Mar.

13.700 

13 ) 600 

13,200

12 , 800

12,300

11,800

11,200

10,500

9,850

9,300

8,970

8,750

8,410

8,290

7,860

6,940

5,960

5,220

5,100

4,930

4,720

4,520

4,550

5,940

3,4£0

5,180

3,560

5,850

3,740

3,730

4,400

232,070

7,486

460,300

Apr.

5,080 

5,380 

4,480

4,020

5,800

5,570

5.510

5,600

3,950

4,170

4,750

5,880

6,870

7,440

7,700

7,740

7,350

6,850

6,300

5,900

5,600

5,730

6,140

7,040

7,590

8,060

8,640

10,200

10.400

10,100

187,840

6,261

572,600

May

9,510 

8.650 

8,970

9,960

11,400

15,700

17,800

17,400

17,000

15,900

15,100

14,600

15,900

12 , 700

10,800

9,280

9,000

9,090

9,270

9,610

10,400

11,200

15,200

16,000

18,700

19,900

19,900

20,100

20.200

19,400

18,600

453,240

15,980

859,500

June

19,100 

19.600 

19,406

19,000

13,600

18,400

17,000

15,600

14,500

12,500

11,500

11,400

11,200

10,900

10,900

10,700

10,500

9,490

8,480

8,680

9,270

10,700

10,900

10,100

8,060

7,540

7,680

7.550

8,570

10,100

567,520

12,250

729,000

July

10.200 

8,570 

6,770

5,580

4,870

4,380

4,140

4,020

5,780

5,560

5,400

5,240

5,060

2,990

2,780

2,650

2,400

2,040

1,850

1,740

1,740

1,680

1,570

1.560

1,680

1,580

2,050

5,060

3,810

3,810

3,430

107,970

3,485

214,200

Aug.

2,470 

2,240 

2,770

3.050

2,830

2,590

2,240

2,470

2,160

1,830

1,700

1,710

1,810

1,670

1,600

1,600

1,600

1,600

1,630

1,700

1,690

1,680

1,610

1,600

1,590

1,620

1,660

1,620

1,570

1,550

1,540

58,960

1,902

116,900

Sept.

1.550 

1,620 

1,640

1,590

1,590

1,650

1,800

1,790

1,920

1,940

1,810

1,730

1,810

1,880

1,900

1,940

1,990

1,860

1,860

2,000

2,040

2,130

2,200

2.250

2,160

2,000

1,930

2,000

2,040

1,970

56,550

1,385

112,200

Calendar year 1955: Max 47,400 Mln 304 Mean 2,073 Ae-ft 1,500,000

Water year 1955-56: Max 47,400 Mln 615 Mean 8,685 Ac-ft 6,505,000

t Expressed in thousands.
338 SAN JOAQOIN RIVER BASIN

San Domingo Creek near San Andreas, Calif.

Location. Lat 38°06'55", long 120"37'00", in NE^ sec. 14, T. 3 N., R. 12 E., on right 

bank 2.5 miles upstream from mouth, 3.2 miles downstream from French Gulch, and 

6.5 miles southeast of San Andreas.

Drainage area. 27.1 sq mi.

Records available. January 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,060 ft (from topographic map). Prior 

to Dec. 6, 1950, staff gage and crest-stage indicator at same site and datum.

Average discharge.--6 years, 16.0 cfs (11,580 acre-ft per year).

Extremes.--Maximum discharge during year, 2,830 cfs Dec. 23 (gage height, 8.24 ft), from 

rating curve extended above 70 cfs on basis of slope-area determination of peak flow; 

no flow during parts of many months.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during each 

year.

Remarks.--Records good. San Domingo Creek receives water above station at times from 

North Fork Stanislaus River by way of Otica Reservoir. Some diversions above station 

for irrigation.

Cooperation.--Two discharge measurements furnished by Bureau of Reclamation.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23

0.55 

.6 

.7 

.8 

.9

1.0

1.1 

1.3

.1 

.3

.8

1.8

3.2

5.4

12

1.6 

2.0 

2.5 

3.0 

3.5 

4.0 

5.0 

7.0

27

54

99

181

305

470

880

1,990

Dec. 23 to Sept. 30

.9

1.0

1.1 

1.4 

1.7

0 

.1 

.2 

.7 

2.2 

8.7 

22

2.0 

2.5 

3.0 

3.5

4.0

5.0

79

136

215

325

640

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.1

1 1

Q

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.2

0.006

0.4

Nov.

0

0

0

0

0

0

0

0

*0

0

0

0

0

1.4

2.0

3.2

3.7

1 . 9

i!s

1.2

2.2

2.5

1.8

1.6

1.2

1.0

.8

.7

.6

.7

27.8

0.93

55

Dec.

4.5

3.3

1.6

1.1

1.0

30

16

7.2

14

9.8

6.6

5.4

4.1

3.2

*2.2

2.0

3.2

4.0

205

166

40

*666

*1,540

*590

175

284

228

103

*68

50

90

4,324.2

139

8,580

Jan.

64

76

58

48

178

116

83

74

58

53

46

39

35

91

242

210

107

77

60

61

53

68

121

86

135

160

162

110

82

67

55

2,875

92.7

5,700

Feb.

46

41

*37

34

32

29

26

24

23

22

22

20

25

18

24

15

15

16

15

20

16

21

96

52

50

52

44

39

36

910

31.4

1,800

Mar.

32.

29

27

25

25

24

21

*19

18

18

17

15

15

14

13

13

12

12

12

11

11

11

9.8

11

11

10

8.4

8.1

8.1

7.8

ITT

476.3

15.4

945

Apr.

10

10

8.1

7.1

7.8

8.1

7.4

7.1

7.1

7.4

16

18

*15

16

15

14

12

11

9.4

8.7

8.4

8.1

7.8

7.6

7.6

15

15

13

11

9.4

318.1

10.6

631

May

8.4

7.8

7.6

39

22

25

20

33

29

24

20

18

16.

14

13

12

11

10

9.4

8.7

*8.1

7.4

7.4

6.8

6.4

6.2

6.2

6.2

6.0

5.8

447.4

14.4

887

June

5.2

4.4

4.0

3.8

3.8

3.6

3.4

3.0

2.8

2.6

2.4

2.4

2.2

2.4

3.0

2.6

2.0

1.6

1.4

*1.B

1.4

1.1

.6

.4

.5

.5

.4

.4

.3

.2

64.2

2.14

127

July

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.4

.5

.4

.3

.3

.2

.2

.2

.1

.2

.1

.1

.1

.1

.1

0

0

0

0

0

0

5.3

0.17

11

Aug.

(*)

0

0

0

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.3

 3

.2

.2

.2

.1

.1

.1

1.6

0.05

3.2

Calendar year 1955 : Max l,54o Mln 0 Mean 17.7 Ac-ft 12,840

Water year 1955-56 : Max 1,540 Mln o Mean 25.8 Ac-ft 18,740

Peak dlscharee fbase. 22O nfsl. r>Bn . 19 MR p.m.1 i.i.f rfa fs.flR ft-.l; TV.,. . ?s fR.sn * \ ?,nxn

cfs (8. 24 ft); Dec. 26 (5 p.m.) 487 cfs (4.59 ft); Jan. 5 (2 p.m.) 229 cfs (3.57 ft); Jan. 15 (7 p.m.) 

445 cfs (4.45 ft).

* Discharge measurement or observation of no flow made on this day.
SAN JOAQUIN RIVER BASIN 339

San Antonio Creek near San Andreas, Calif.

Location.--Lat 38°07'50", long 120°38'10", in NE^ sec. 10, T. 3 N., R. 12 E., on right 

bank 800 ft downstream from highway bridge, 1.9 miles upstream from mouth, 5 miles 

downstream from Indian Creek, and 5 miles southeast of San Andreas.

Drainage area.--46.6 sq mi.

Records available. January 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 940 ft (from topographic map). Prior to 

Dec. 28, 1950, staff gage and crest-stage indicator at same site and datum.

Average discharge. 6 years, 46.2 cfs -(33,450 acre-ft per year).

Extremes . Maximum discharge during year, 2,500 cfs Dec. 23 (gage height, 5.66 ft), from 

rating curve extended above 250 cfs on basis of slope-area determination of peak flow; 

no flow Oct. 1 to Nov. 12.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times in 1950, 

1954-55.

Remarks. Records good. Some diversion for mining and logging above station. 

Cooperation. One discharge measurement furnished by Bureau of Reclamation.

Revisions (water years). WSP 1395: 1952, drainage area. Peak discharge for the water 

year 1952 has been revised as shown below, superseding figure published in WSP 1245.

Revised peak discharge . 1951-52: Jan. 12 (1 p.m.) 977 cfs (3.81 ft).

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.8

1.0 1.1

1.2

1.3

1.4

1.5

1.6

,1

.3

.9

2.2

4.8

1.8 

2.0 

2.2 

2.5 

3.0 

4.0 

5.5

36

64

101

190

440

1,120

2,360

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

o

Nov.

0

0

0

0

o

0

o

o

*o

o

0

0

.1

.2

3.9

3.2

5.8

5.8

4.2

4.2

5.8

9.9

7.4

5.8

5.4

4.4

3.9

3.9

3.9

3.9

81.7

2,72

162

Dec.

7.4

16

8.8

7.4

6.6

34

26

8.8

20

14

8.3

7.8

7.8

7.8

*7.4

10

9.9

9.3

198

241

137

*765

* 2,170 »r,52o"

494

752

640

330

*252

183

190

7,889.3

254

15,650

Jan.

162

186

146

131

325

239

186

176

152

140

134

120

113

244

568

594

342

266

218

210

198

228

416

300

369

476

518

352

290

244

210

8,253

266

16,370

Feb.

183

162

*146

134

125

118

108

95

93

89

87

83

79

76

72

69

69

69

64

76

69

74

244

146

131

125

115

108

101

3,110

107

6,170

Mar.

95

?!

91

91

93

89

85

*81

81

81

78

76

76

71

71

69

69

67

69

69

67

66

64

62

61

59

56

53

50

50

53

2,234

72.1

4,430

Apr.

59

53

49

46

45

42

40

39

36

39

53

59

*52

55

53

53

53

52

49

46

44

41

39

38

38

67

-61 72

55

52

1,480

49.3

2,940

May

48

44

44

132

120

97

108

99

T25" 137

115

99

91

83

74

69

64

61

56

52

49

*49

48

45

41

38

36

38

36

34

34

2,166

69.9

4,300

June

34

34

28

30

28

28

26

26

24

24

22

20

20

20

22

20

18

18

18

18

18

*16

18

16

16

16

16

15

14

Tl

637

21.2

1,260

July

11

11

12

12

12

12

11

11

10

12

9.3

8.8

8.8

8.8

8.8

8.8

7.4

7.4

7.4

7.0

6.6

5.8 '5.0

5.0

4.8

4.4

4.4

4.4

4.4

4.8

4.2

250.3

8.07

496

Calendar year 1955: Max 2,170 Mln 0 Mean 36.3 Ao-ft 26,250

Aug.

3.9

3.9

3.9

4.4

4.4

4.4

4.2

*4.2

3.6

3.4

2.9

2.9

3.2

2.9

2.9

2.9

3.2

2.9

2.9

3.2

2.6

2.2

2.0

1.7

1.7

1.5

1.5

1.6

1.9

2.0

2.2

91.1

2.94

181

Sept.

2.2

1.9

1.5

1*2.

*1.4

1.5

1.6

1.7

1.9

2.2

2.6

2.6

2.2

2.0

2.0

1.6

1.9

1.9

2.4

1*0

4.8

3.9

3.4

2.9

2.6

2.6

2.6

2.9

2.6

2.2

73.8

2.46

146

Water year 1955-56: Max 2,170 Mln 0 Mean 71.8 Ac-ft 52,100

Peak discharge (base. 280 cfs). Dec. 19 (10 p.m.) 369 cfs (2.88 ft); Dec. 23 (4 a.m.) 2,500 cfs 

(5.66 ft); Dec. 26 (7 p.m.) 1.220 cfs (4.13 ft); Jan. 5 (11 a.m.) 410 cfs (2.95 ft); Jan. 15 (7 p.m.) 

1,010 cfs (3.86 ft); Jan. 23 (1:30 a.m.) 566 cfs (3.21 ft); Jan. 26 (8 p.m.) 753 cfs (3.49 ft); 

Feb. 23 (3 a.m.) 500 cfs (3.10 ft).

* Discharge measurement or observation of no flow made on this day.
340 SAN JOAQUIN RIVER BASIN

South Fork Calaveras River near San Andreas, Calif.

Location. Lat 38°08'40", long 120°39'50", in NW£ sec. 4, T. 3 N., R. 12 E., on right bank 

0.1 mile downstream from San Antonio Creek, 1.6 miles south of the Calaveras Cement 

Plant, and 3.7 miles south of San Andreas.

Drainage area. 118 sq mi.

Records available. April 1950 to September 1956.

gage.--Water-stage recorder. Altitude of gage is 860 ft (from topographic map). Prior to 

Feb. 13, 1952, staff gage at same site and datum.

Average discharge. 6 years, 94.8 cfs (68,630 acre-ft per year).

Extremes.--Maximum discharge during year, 17,600 cfs Dec. 23 (gage height, 10.29 ft), from 

rating curve extended above 3,400 cfs on basis of slope-area measurement of peak flow; 

no flow Oct. 1 to Nov. 16.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during 1950- 

51, 1954-55.

Remarks. Records good. Some small diversions, mainly for irrigation, above station. 

Revisions (water years) , WSP 1395: 1951(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Dec. 23

1.0 

1.2 

1.4

.2 

.5 

1.0 

1.9 

3.3 

5.3

33

66

134

274

600

960

1,470

2,900

4,800

9,600

Dec. 24 to Sept. 30

6 0.8 1.2

7 2.1 1.4

8 4.4 1.7

9 7.6 2.0

O 12 2.4

137

274

Note. Same as preceding table above 2.4 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

o

O

0

0

0

o

*o

o

o

0

o

o

0

o

1.1

5.6

4.0

4.6

5.8

~6~.6 11

4.8

4.4

3.6

3.1

3.1

3.0

3.0

63.7

2.12

126

Dec.

7.8

25

13

8.6

7.2

160

74

32

70

43

26

19

16

*14

11

15

23

22

736

662

265

3,440

*B,210

*3,600

976

1,830

1,230

588

*392

288

616

23,420.6

756

46,450

Jan.

365

408

283

233

1,330

600

460

447

306

288

262

219

197

737

1.710

1,200

612

447

350

370

335

408

769

504

776

1,090

967

618

469

376

315

17,451

563

34,610

Feb.

270

*233

211

197

181

168

157

140

135

128

126

121

121

110

110

100

98

100

96

116

102

105

697

306

277

297

219

191

178

5,290

182

10,490

Mar.

165

154

145

140

143

137

*123

121

116

114

108

104

104

loo

96

94

92

91

91

91

89

87

86

82

82

80

74

71

68

68

70

3,186

103

6,320

Apr.

79

74

66

64

62

61

57

56

54

57

80

~84 104

*89

86

80

77

74

70

65

62

59

57

56

56

86

98

82

74

68

2,137

71.2

4,240

May

64

61

58

164

159

123

137

123

168

175

145

126

112

102

92

84

79

77

71

68

65

*62

58

57

54

48

47

47

46

45

46

2,763

89.1

5,480

June

45

45

38

39

38

37

36

35

33

32

30

28

26

28

31

29

24

23

22

23

23

19

*21

18

17

16

16

14

14

JL3

813

27.1

1,610

July

12

11

12

11

12

11

11

9.7

9.2

11

8.0

7.3

6.9

7.3

6.9

6.9

6.2

6.2

5.9

5.3

4.7

4.4

3.8

3.6

5.5

5.5

5.5

5.5

5.8

5.8

5.6

217.7

7.02

452

Aug.

3.6

3.5

3.6

4.1

ITS

5.6

5.6

5.5

*5.1

2.9

2.5

2.3

2.3

2.1

2.1

2.1

2.5

2.5

2.5

2.5

2.1

1.9

1.7

1.6

1.4

1.5

1.2

T72

1.5

1.6

1.9

74.7

2.41

148

Sept.

1.7

1.4

1,2

*tf

.9

1.0

1.2

1.5

1.6

1.7

1.9

1.9

1.7

1.7

1.6

1.4

1.4

1.7

5.9

5.3

3.8

5.1

2.7

2.5

2.5

2.5

2.5

2.5

2.1

62.1

2.07

125

Calendar year 1955: Max 8,210 Min 0 Mean 98.0 Ac-ft 70,930

Water year 1955-56: Max 8,210 Min 0 Mean 152 Ac-ft 110, OOO

Discharge measurement or observation of no flow made on this day.
SAN JOAQUIN RIVER BASIN 341

Calaveritas Creek near San Andreas, Calif.

Location. Lat 38°09'50", long 120°39'30", in SW£ sec. 28, T. 4 N. , R. 12 E. , on right bank 

0.8 mile east of Calaveras Cement Plant, 1.0 mile upstream from mouth, and 2.6 miles 

southeast of San Andreas.

Drainage area.--53.3 sq mi.

Records available.--April 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 865 ft (from topographic map). Prior to 

Feb. 12, 1952, staff gage at same site and datum.

Average discharge. 6 years, 41.4 cfs (29,970 acre-ft per year).

Extremes. Maximum discharge during year, 3,600 cfs Dec. 23 (gage height, 6.33 ft); no flow 

Oct. 1 to Nov. 10.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during 1950, 

1954-55.

Remarks. Records good except those below 5 cfs, which are fair. 

Revisions (water years). WSP 1395: 1951(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

0.4 

.5

1.1 

1.3 25 6.0

50

81

149

247

460

1,O70

1,950

3,140

1.1 

1.3 

1.6

1.9 

2.2 

2.6 

3.0

4.0 

5.0

90

155

285

460

1,070

1,950

Discharge, In cubic feet per second, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

O

0

0

O

O

O

*o

O

.4

.6

1.2

1.7

1.4

1.9

 279 3.7

2.9

3.2

3.7

3.4

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

56.6

1.89

112

Dec.

9.0

6.5

5.8

578

6.8

95

44

22

38

29

16

12

11

*9.0

8.6

8.2

9.8

13

361

323

98

1,910

*5.150

1,830

490

879

660

258

*152

119

179

ID, 738.5

346

21,300

Jan.

155

215

148

121

601

345

229

205

152

121

106

92

87

365

1,O80

746

324

206

150

150

130

272

622

289

370

648

632

333

222

167

132

9,416

304

18,680

Feb.

104

*88

80

73

68

62

58

53

50

47

45

43

41

39

38

36

34

36

33

43

38

4O

265

T45

108

115

101

86

76

2,045

70.5

4,060

Mar.

68

6?

59

55

55

53

49

49

44

41

38

37

35

34

32

3O

30

28

28

27

26

25

25

24

22

22

22

22

21

21

22

1,104

35.6

2,190

Apr.

26

23

21

20

2O

19

19

18

18

18

27

37

32

*35

36

32

30

26

23

21

21

20

18

18

18

26

38

30

27

25

742

24.7

1,470

May

22

21

22

95

86

58

74

68

146

101

87

69

58

47

40

35

32

30

27

26

24

22

*21

20

19

18

18

18

16

16

16

1,352

43.6

2,680

June

14

13

13

12

12

12

12

11

11

10

9.8

9.0

8.6

9.0

9.0

9.8

9.4

8.2

8.2

8.2

7.4

5.9

*6.2

6.5

6.5

6.2

6.2

6.2

5.6

5.6

271.5

9.05

539

July

5.6

5.3

5.3

5.3

5.3

5.0

4.7

4.7

4.7

4.7

4.1

3.8

4.1

4.1

4.1

3.8

3.8

3.8

3.2

3.2

3.0

3.0

2.8

2.8

2.6

2.4

2.4

2.3

2.3

2.3

2.1

116.6

3.76

231

Aug.

 27T 2.1

2.O

2.0

1.8

2.O

1.8

1.8

*1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.7

1.6

1.5

1.5

1.5

1.5

1.5

1.4

1.4

.5

.5

.4

.4

.4

.5

51.8

1.67

103

Sept.

1.3

1.2

1.0

*.9

79

.9

.9

.9

.9

1.0

.9

.9

1.1

1.2

1.2

1.2

1.2

1.2

1.5

1.8

1.6

1.5

1.6

1.7

1.7

1.8

2.5

2 . 1

1.8

1.8

40.0

1.33

79

Calendar year 1955: Max 3,130 Mln O Mean 43.9 Ac-ft 31,8OO

Water year 1955-56: Max 3,130 Mln O Mean 70.9 Ac-ft 51,440

^ t . ±o J-^/j ua.il, £.0 \c. y ,ui, j 3 ( t. ui» ^O.OD J-^Vj rcu. t-j ^* a.m.; ._ Discharge measurement or observation of no flow made on this day.

493801 O - 59 - Z3
342 SAN JOAQUIN RIVER BASIN

Esperanza Creek near Mokelumne Hill, Calif.

Location. Lat 38°19'00", long 120°35'40", in NW£ see. 6 T. 5 N., R. 13 E., on right bank 

600 ft upstream from mouth and 6 miles east of Mokelumne Hill.

Drainage area. 16.7 sq mi.

Records available. January 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,470 ft (from topographic map).

Average discharge.--5 years, 15.6 cfs (11,290 acre-ft per year).

Extremes. Maximum discharge during year, 3,060 cfs Deff. 23 (gage height, 6.78 ft in well, 

7.7 ft at outside gage), from rating curve extended above 1,100 cfs on basis of slopearea measurement at gage height 6.5 ft (outside); minimum, 0.4 cfs Oct. 15-18.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.1 cfs Aug. 24, 25, 

1955

Flood of Nov. 18, 1950, reached a stage of 6.5 ft, from floodmarks (discharge, 2,030 

cfs, from rating curve extended above 1,100 cfs on basis of slope-area determination of 

peak flow).

Remarks. Records good. No storage or diversion above station.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

0.5

.6 

.7

1.2

1.5

0.4

1.4

2.8

4.8

7.9

22

44

1.8 

2.1 

2.5 

3.0 

4.0 

5.0 

6.0

76

121

203

358

835

1,450

2,300

1.0 

1.2

0.6

1.7

3.3

5.9

13

25

1.6 2;o

2.5 

3.0 

3.5

64

121

215

365

580

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16 

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ao-ft

Oct.

0.6

.6

.6

.6

.5

.6

.6

.6

.6

.5

.6

.6

.6

.5

.4 

.4

.4

.6

.6

.6

.6

.6 

.6

.5

.6

.6

.8

.6

.6 

.6

17.6

0.57

35

Nov.

0.6

.6

.6

.8

.6

.6

.6

*.6

.6

.6

.6

.6

1.5

2.8 

2.0

1.8

2.0

1.5

1.6

2.7

2.0

1.8 

2.2

1.8

1.6

1.5

1.5

1.5

1.5

42.1

1.40

84

Dec.

8.4

9.5

4.2

3.0

2.7

59

13

5.8

25

9.5

5.2

4.0

3.4

3.2 

2.8

2.7 

3.6

4.8

217

99

31'

1,000

Mil

112

266

138

*62

43

31 

38

4,362.8

141

8,650

Jan.

62

72

38

27

132

68

48

54

41

33

29

23

20

119 

267

159

66

46

36

39

33

89

140 

62

133

150

191

87

59

45 

37

2,605

84.0

5,170

Feb.

30

26

23

21

20

18

17

16

14

14

14

13

13

12 

12

a12

12

20

14

*17

1

38

46

40

31

28

688

23.7

1,360

Mar.

24

21

20

IS

20

20

18

17

15

14

13

13

12

12 

11

11 

11

10

9.6

9.6

9.2

9.2

8.8 

8.5

8.5

8.2

8.2

7.8

7.8

fct

391.0

12.6

776

Apr.

13

9.6

8.2

7.4

7.1

7.1

7.1

6.8

6.5

6.8

12

17

 15

1

12

11

9.2

8.5

8.2

7.4

7.4

7.1 

6.8

6.8

16

14

11

9.6

8.5

3O3.1

10.1

601

May

7.8

7.4

7.8

94

42

24

45

33

60

43

46

29

22

18 

14

13 

12

11

10

9.6

9.2

8.5

8.2 

7.8

7.4

7.1

7.1

6.8

6.5

H

629.6

20.3

1,250

June

5.9

5.9

5.6

5.3

5.0

4.7

4.5

4.5

4.2

4.2

4.2

4.0

3.7

4.O 

4.2

4.2

3.7

3.5

*3.5

3.5

3.5

3.3

3.1 

3.1

3.1

2.9

2.9

2.8

2.8

2.6

118.4

3.95

235

July

2.6

2.6

2.8

2.6

2.6

2.6

2.6

2.4

2.4

2.3

2.3

2.3

2.3

2.3 

2.3

2.3 

2.1

2.1

2.0

2.0

1.8

1.8

1.8

1.7

1.7

1.6

1.6

1.6

1.4

1.4 

1.3

65.2

2.10

129

Aug.

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.3

it*

il*

1.4

1.4

1.4

1.4

1.4 

1.3 1-.3

1.3

1.2

1.2

1.2

1.2

1.1

40.1

1.29

80

Sept.

1.1

1.1

175

 1.0

1.0

1.0

1.0 1.1

1.1

1.1 1.1

1.1

1.1 

1.1

1.0 

1.0

1.0

1.4

1.7

1.3

1.2

1.1 

1.1

1.1

1.0

1.1

1.1

1.1

1.1

33.2

1.11

66

Calendar year 1955 : Max 1,660 Mln 0.1 Mean 17.9 Ao-ft 12,980

Water year 1955-56 : Max 1,660 Mln 0.4 Mean 25.4 Ao-ft 18,440

Peak discharge (base. 200 cfsl. Dec. 19 (8:3O p.m.) 404 ofs (3.11 ft); Dec. 23 (5 p.m.) 3,060 cfs 

(6.78 ft); Dec. 26 (5 p.m.) 655 cfs (3.65 ft); Jan. 15 (6 p.m.) 615 ofs (3.57 ft); Jan. 22 (9 p.m.) 

327 cfs (2.89 ft); Jan. 26 (11 a.m.) 1,140 cfs (4.53 ft); May 4 (12:30 p.m.) 235 ofs (2.58 ft).

* Discharge measurement made on ^thls day.

Note.--No gage-height record Aug". 22 to Sept. 4; discharge interpolated or estimated on basis of 

recorded range In stage.
SAN JOAQUIN RIVER BASIN 343

Jesus Maria Creek near Mokelumne Hill, Calif.

Location. Lat 38°17'00", long 120°39'00", in SE£ sec. 16, T. 5 N., R. 12 E.. on right bank 

0.6 mile upstream from mouth, 1.0 miles downstream from Wet Gulch, and 3.2 miles southeast of Mokelumne Hill.

Drainage area. 34.7 sq. mi.

Records available. January 1950 to September 1956.

Page."-Water-stage recorder. Altitude of gage is 980 ft (from topographic map). Prior to 

Dec. 22, 1950, staff gage and crest-stage indicator at same site and datum.

Average discharge.--6 years, 27.7 cfs (20,050 acre-ft per year).

Extremes.--Maximum discharge during year, 5,490 cfs Dec. 23 (gage height, 7.63 ft), from 

rating curve extended above 1,300 cfs on basis of slope-area determination at gage 

height 7.1 ft; minimum, 0.1 cfs for many days in October.

1950-56: Maximum discharge, that of Dec.'23, 1955; no flow Sept. 7, 8, 1955.

Remarks. Records good except those for period of no gage-height record, which are fair. 

No storage or diversion above station.

Revis ions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second) 

(Shifting-control method used Oct. 23 to Nov. 7)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

0.5

1.0

0.1 

.4 

1.4 

2.6 

4.4 

6.8

1.1

1.2

1.3 

1.6 

2.0 

2.5

10

16

22

52

109

195

3.0 

4.0 

5.0 

6.0

7.0

320

720

1,400

2,530

4,200

1.2

1.3

1.4 

1.6 

l.S 

2.2

1.0 

2.8 

5.8

14

24

66

2.6 

3.0 

3.5 

4.0 

5.0

130

230

410

660

1,380

Discharge, In cubic feet per second, water year October 1955 to September 1956

 Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

a$

!i.1.1

.1.1.1.1.1

.1.1.1.1.1

.1.1.1.1 jj?

.2

.2

.1

.1

.1

.1

.2

.2

.2

.2

.2

3.9

0.13

7.7

Nov.

o^

'.5

.3

.3

.5

.6 *.e

.6

.8

1.1

1.5

2.9

6.3

5.0

4.8

S.5

6.6

4.6

4.2

5.5

5.3

4.8

5.5

4.8

4.4

4.2

4.0

4.0

4.6

96.6

3.22

192

Dec.

11 

16

7.2

5.0 '4.6

101

24

10

33

15

8.5

6.6

5.5

5.0

4.6

4 4

5. G'.B5

172

110

48

974

2.750

1,250

246

476

304

*125

80

59

67

6,912.7

223

13,710

Jan.

86

121

72

54

256

144

98

105

82

69

61

52

15

166

500

368

159

110

83

86

77

147

284

139

251

505

39Q

171

114

89

73

4,937

159

9,790

Feb.

60 

52

46

41

39

36

32

29

28

26

25

24

25

25

22

21

21

22

21

28

25

*25

QQ

62

66

62

51

46

1,170

40.3

2,520

Mar.

42 

38

35

55

55

56

52

29

28

26

24

24

23

23

. 21

21

21

20

20

20

20

19

19

19

19

18

18

18

IT

18

753

24.3

1,490

Apr.

22 

20

18

17

17

17

16

16

15

16

23

30

*25

28

26

21

20

18

17

16

16

16

15

15

15

24

25

21

18

17

580

19.3

1,150

May

16 

16

17

110

64

41

64

52

~§o" 112

72

52

41

33

28

24

22

21

20

19

IS

18

17

17

16

16

16

15

15

M

If

1,080

34.8

2,140

June

fl

13

15

15

12

12

12

11

11

10

9.8

9.4

9.8

11

9.4

9.0

8.2

*8.4

9.0

8.6

8.2

8.2

7.8

7.8

7.8

7.4

7.4

T.O

...M

295.9

9.86

587

July

6.4 

6.4

6.7

674

6.4

6.1

6.1

5.8

5.8

5.5

5.5

5.5

5.5

5.5

5.5

5.0

5.0

4.5

4.0

4.0

4.0

3.5

3.5

3.0

3.0

2.5

2.5

8.5

9,0

2!-*

142.6

4.60

285

Aug.

ftf 2.5

2.5

2.0

2.0

2.0

2.0

2.0

2.0

1.5

T75

2.0

2.5

2.5

2.5

2.0

2.0

2.0

2.0

2.0

2.0

1.5

1.5 1.5*

1.5

1.5

1.5

1.5

E.S

2.0

61.0

1.97

121

Sept.

1.5 

1.5

1.5

1.5

*1.4

1.4

1.4

1.6

1.6

1.9

1.9

2.1

2.1

2.1

2.1

1.9

1.7

1.7

2.1

4.0

3.7

3.4

3.1

2.8

2.5

2.3

2.8

2.5

2.5

2.3

64.9

2.16

129

Calendar year 1955: Max 2,730 Min 0 Mean 27.8 Ac-ft 20,150

Water year 1955-56: Max 2,730 Min 0.1 Mean 44.0 Ac-ft 31,920

Peak discharge (base, 400 cfs). I

(4.66 ft); Jan. 15 (8 p.m.) 1,150 ci

tec. 23 (6 p.m.) 5,490 cfs (7.63 ft); Dec. 26 (6 p.m.) 1,100 cfs 

s (4.73 ft); Jan. 22 (11 p.m.) 565 cfs (3.83 ft); Jan. 26

(12:30 p.m.) 1,630 cfs (5.26 ft).

* Discharge measurement made on this day.

Note. No gage-height record July 12 to Sept. 4; discharge estimated on basis of records for North

Pork Calaveras River near San Andreas.
344 SAN JOAQUIN RIVER BASIN

North Fork Calaveras River near San Andreas, Calif.

Location. Lat 38 "13'05", long 120°41'55", in NW^- sec. 7, T. 4 N., R. 12 E., on right 

bank 0.5 mile upstream from Chill Gulch and 1.8 miles northwest of San Andreas.

Drainage area. 85.7 sq mi.

Records available. March 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 750 ft (from topographic map). Prior 

to Feb. 14, 1952, staff gage at same site and datum.

Average discharge. 6 years, 58.4 cfs (42,280 acre-ft per year).

Extremes. Maximum discharge during year, 6,200 cfs Dec. 23 (gage height, 12.52 ft), from 

rating curve extended above 3,900 cfs; no flow Oct. 1 to Nov. 16.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during most 

years.

Remarks. Records good. Small diversions above station for irrigation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. to Dec. 23 Dec. 24 to Sept. 30

.9

1.0

1.1

1.2

1.3

0

.1

.2

.5

1.0

2.0

4.0

7.0

1.5 

1.8 

2.1 

2.5 

3.0 

4.0 

6.0 

8.0

24

55

99

181

308

700

1,840

3,090

.9

1.0

1.1

1.2

10.0 4,440

0.8

1.0

1.7

2.7

4.2

6.6

10

20

42

2.1 

2.5 

3.0 

3.5 

4.0 

5.0 

6.0 

8.0

70

122

228

420

675

1,240

1,840

3,090

Discharge, In cubic feet per second, water year October 1955 to September 195B

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

(*)

0

0

0

Nov.

0 

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

6.2

14

9.4

7.4

6.6

12

9.6 

9.4

9.8

6.6

7.0

6.4

6.1

6.1

120.8

4.03

240

Dec.

10 

34

20

13

11

150

69

26

49

36

20

15

13

*11

10

12 9.8 

15

304

427

120

*1,820

4.180 

*2,600

658

910

684

302

183

*142

156

13,211.8

426

26,210

Jan.

179 

266

164

127

518

376

214

226

176

145

133

112

99

323

1,080

978

350

214

164

162

149

206

755 

322

547

1,100

1,100

451

271

206

170

11,315

365

22,440

Feb.

143 

*125

113

104

99

92

86

81

76

73

72

69

66

63

61

58

57

60

59

81

73

67

281 

192

149

151

152

125

116

2,944

102

5,840

Mar.

~97 106 

91

66

88

89

*61

77

73

70

67

62

60

56

56

53

52

50

49

49

47

46

46 

44

43

41

40

41

40

38

40

1,680

60.6

3,730

Apr.

53

50

42

39

36

36

34

33

33

33

47

70

*67

68

69

56

50

45

40

38

36

35

33 

33

33

49

68

51

45

40

1,362

45.4

2,700

May

36 

34

34

208

1eS

104

127

126

189

166

149

118

94

79

68

61

56

52

49

46

43

*39

36 

35

33

31

30

30

28

11

27

2,321

74.9

4,600

June

If

24

23

22

23

23

22

19

18

19

17

16

16

18

17

16

14

13

14

*14

13

11 

11

11

10

9.3

9.0

8.3

7_.6

489.2

16.3

970

July

8.0 

7.6

8.0

8.0

7.6

7.3

6.9

6.6

6.1

5.9

5,9

5.4

5.6

5.6

6.1

5.4

5.4

4.7

4.2

4.2

4.0

4.0

3.5 

3.1

2.9

2.9

2.7

? ? m2.2

2.8

157.2

5.07

312

Aug.

3.1 

2.7

2.7

2.4

2.4

2.4

2.3

2.3

*2.2

2.2

1.9

2.1

2.2

2.4

2.7

2.2

2.2

2.1

2.2

2.1

1.7

1.7

1.6 

1.3

1.3

.4

.3

-*

.5

.3

62.4

2.01

124

Sept.

1.5 

1.3

1.1

*1.0

.9

.9

.8

.8

1.3

1.3

1.5

2.0

2.0

2.0

1.9

1.9

1.7

1.5

1.5

2.8

ILL

3.2

2.8 

2.6

2.3

2.2

2.2

2.2

2.3

2.3

55.5

1.85

110

Calendar year 1955: Max 4,180 Mln 0 Mean 56.4 Ao-ft 40,820

Water year 1955-56: Max 4,180 Mln 0 Mean 92.7 Ao-ft 67,280

Peak discharge (base, 600 efs).--Dee. 20 (2 a.m.) 944 cfs (4.48 ft); Dec 

12.52 ft); Dec. 26 (8:30 p.m.) 2,090 cfs (6.42 ft); Jan.

_.__ .._,, _ . 23 (8:30 p.m.) 6,200 cfs 

-.., _-.. -. ,-.-. r ...... -,-.. --. ,-.- --, - .. - ,4:30 p.m.) 818 cfs (4.26 ft); Jan. 15

.) 2,370 cfs (6.89 ft); Jan. 23 (1 a.m.) 1,190 cfs (4.92 ft)j Jan. 26 (2:30 p.m.) 2,580 cfs 

7.22 ft). 

* Discharge measurement or observation of no flow made on this day.
SM JOAQUIN RIVER BASIN 345

Murray Creek near San Andreas, Calif.

Location (revised).--Lat 38°12'45", long 120°40'55", in SWij- sec. 8, T. 4 N., R. 12 E., on 

right bank 600 ft upstream from bridge on State Highway 49, 0.9 mile downstream from 

North Fork Murray Creek, 1.1 miles north of San Andreas, and 1.5 miles upstream from 

mouth.

Drainage area. 23.5 sq mi.

Records available.--March 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 820 ft (from topographic map). Prior 

to Feb. 13, 1952, staff gage and Feb. 13, 1952, to May 25, 1955, water-stage recorder, 

at site 600 ft downstream at datum 7.23 ft lower.

Average discharge.--6 years, 11.7 cfs (8,470 acre-ft per year).

Extremes.--Maximum discharge during year, 1,700 cfs Dec. 23 (gage height, 6.62 ft), from 

rating curve extended above 820 cfs on basis of slope-area determination of peak flow; 

no flow for several months.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during 1950,

Remarks. Records good except those for period of shifting control, which are fair. 

No storage above station.

Rating table, water year 1955-56, except period of shifting control (gage 

height, In feet, and discharge, In cubic feet per second)

1.5

1.6

1.7

1.8

1.9

.2 

1.0 

4.2 

9.0

130

258

4.0 

5.0 

6.0 1,440

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

o

0

Nov.

0 

0

0

0

0

0

o

.1

.3

.4

.5

.5

1.2

5.9

2.2

1.4

4.6

2.6

1.6

1.4

2.6

1.9

1.9

2.6

1.9

1.4

1.4

1.4

1.4

1.2

40.4

1.35

80

Dec.

6.1 

5.0

1.6

1.2

172

32

6.9

4.6

12

5.9

3.8

3.4

3.0

*2.6

2.6

2.6

4.2

3.4

44

38

15

*395

* 1.150

662

111

133

116

52

39

*30

49

2,916.1

94.1

5,780

Jan.

44 

44

35

30

92

82

58

53

41

36

31

28

26

70

274

175

78

57

45

45

36

56

90

65

80

196

144

85

63

51

45

2,255

72.7

4,470

Feb.

37 

32

*30

27

26

25

23

22

20

19

18

18

18

17

16

15

15

15

15

18

15

15

44

30

28

29

28

26

24

665

22.9

1,320

Mar.

22

20

19

18

18

18

*16

16

15

15

15

14

13

12

12

11

11

11

10

10

10

10

9.7

9.7

9.7

9.7

9.0

9.7

9.0

9.0

10

401.5

13.0

796

Apr.

11 

9.7

9.0

8.4

8.4

7.9

7.4

6.9

6.9

7.9

14

14

*12

13

10

9.0

9.0

8.4

7.4

6.9

6.9

6.9

6^4

6.4

6.4

10

9.0

7.4

6.9

6.9

260.4

8.68

516

May

5^9

6.4

6.9

29

19

14

19

16

32

24

22

18

15

12

10

9.0

8.4

8.4

7.9

7.4

7.4

*6.9

6.9

6.9

6.9

6.4

6.4

6.4

6.4

5.9

362.7

11.7

719

June

5*9. 

5.4

5.0

5.0

5.0

5.0

4.6

3.8

3.8

3.8

3.8

3.8

3.4

3.8

4.6

3.8

3.4

*3.0

3.0

3.0

2.6

2.6

2.2

2.2

1.9

1.6

1.6

1.4

1.2

.9

101.1

3.37

201

July

0.9

1.2

1.2

1.2

1.2

i^i

1.2

.9

.8

.8

.6

.6

.6

.8

.8

.6

.5

.4

.4

.2

.2

.2

.1

7T

.1

.1

.1

.1

.1

.1

.1

17.6

0.57

35

Aug.

0.1 

.2

.2

.2

.2

.2

.2

**. 1

.1

.1

.1

.2

.2

.2

.2

.2

72" .4

.2

.2

.2

.2

.1

0

0

0

0

.1

.1

.1

.1

4.6

0.15

9.1

Sept.

0.1 

0

0

0

*o

o

0

0

.1

.2

.2

.2

.2

.2

.2

.1

.1

.1

.2

.4

.4

.2

.2

.1

.1

.2

.2

.2

.2

.2

4.3

0.14

8.5

Calendar year 1955: Max 1,130 Mln 0 Mean 11.5 Ac-ft 8,330

Water year 1955-56: Max 1,130 Mln o Mean 19.2 Ac-ft 13,930

Peak discharge (base. 9O cfs). De

(3.60 ft); Jan. 5 (6:30 p.m.) 128 of

:. 23 (7 p.m.) 1,7OO cfs (6.62 ft); Dec. 26 (5:30 p.m.) 292 cfs 

3 (2.99 ft): Jan. 15 (7 p.m.) 636 cfs (4.33 ft); Jan. 22 (9 p.m.)

167 ofs (3.17 ft); Jan. 26 (11 a.m.) 379 cfs (3.82 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. Shifting-control method used June 30 to Sept. 3O.
346 SAN JOAQUIN RIVER BASIN

Cosgrove Creek near Valley Springs, Calif.

Location. Lat 38°08'10", long 120°50'0'5", in SE£ sec. 35, T. 4 N., R. 10 E., on right bank 

0.4 mile upstream from mouth and 2.7 miles south of Valley Springs.

Drainage area.--20.6 sq mi.

Records available. October 1929 to September 1956.

Gagei. Water-stage recorder. Altitude of gage is 550 ft (from topographic map). Prior to 

Mar. 17, 1930, staff gage at site a quarter of a mile downstream at different datum.

Average discharge. 27 years, 7.91 cfs (5,730 acre-ft per year); median of yearly mean discharges, 6.0 cfs (4,340 acre-ft per year).

Extremes.--Maximum discharge during year, 3,240 cfs Dec. 23 (gage height, 8.96 ft), from 

rating curve extended above 900 cfs on basis of slope-area determination of peak flow; 

no flow for several months.

1929-56: Maximum discharge, that of Dec. 23, 1955; no flow for several months 

during each year.

Remarks. Records good except those for period of no gage-height record, which are fair. 

No storage or diversion above station.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.9

2.0

2.1

2.2

2.3

2.4

2.5

0 

.1 

.3 

1.0 

2.6 

5.2 

8.3 

11

2.8 

3.0 

3..2 

3.5 

4.0 

4.5 

5.0 

6.0

22

40

66

120

250

420

640

1,140

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

2122"

23 

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

0

0

Dec.

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2

35

25

20

250

*800 

350 

67

225

90

37

*20

17 

26

1,964

63.4

3,900

Jan.

28

28

I!

17

258

62

81

62

28

38

33

20

18

328

505

*130

47

32

*23

53

32

81

77 

37 

*76

*393

144

47

28

21 

18

2.,762

89.1

5,480

Feb.

14

12

*11

11

10

9.2

8.6

8.3

7.4

7.1

6.8

6.8

6.5

6.2

5.6

4.9

4.6

4.9

4.3

6.5

4.9

20

ft

26

24

12

10

19

-

367.6

12.7

729

Mar.

11

8.9

8.0

7.4

6.8

6.8

5.6

5.2

4.9

4.6

4.1

*3.8

3.5

3.3

2.8

2.6

2.6

2.2

2.0

2.0

2.0

1.9

1.7 

1.6 

1.4

1.4

1.3

1.2

1.2

1.2

1.0

114.0

3.68

226

Apr.

1.2

1.2

1.0

.9

.8

.8

.7

.6

.6

.6

1.0

1.9

1.6

2.0

T7T

1.3

1.0

.8

.6

.4

.4

.4

.4

tl

.5

.7

.6

.5

.4

25.2

0.84

50

May

0.3

*.2

.2

2.6

2.2

1.7

1.6

1.4

1.3

.9

.8

.7

.6

.4

.3

.2

.2

.1

.1

.1

0

0

0 

0 

0

0

0

0

0

0 

0

15.9

0.51

32

June

(*)

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 800 Mln 0 Mean 10.3 Ao-ft 7,440

Water year 1955-56: Max 800 Mln 0 Mean 14.3 AC-ft 10,420

Peak discharge (base. 310 ofs). --De

cfs (5.06 ft); Jan. 5 (2 p.m.) 448 cl 

(5 p.ra.) 1,270 ofs (6.22 ft); Jan. 26 (]

c. 23 (time unknown) 3,240 ofs (8.96 ft); Dec. 26 (5 p.m.) 667 

s (4.57 ft); Jan. 7 (8:30 p.m.) 376 ofs (4.39 ft); Jan. 15 

0 a.m.) 1,350 ofs (6.35 ft).

* Discharge measurement or observation of no flow made on this day.

Note. No gage-height record Dec. 1-24; discharge estimated on basis of records for nearby streams.
SAN JOAQUIN RIVER BASIN 347

Calaveras River at Jenny Lind, Calif.

Location. Lat 38°05'20", long 120°51'53", in NWi sec. 27, T. 3 N., R. 10 E., on right 

bank 70 ft downstream from bridge on Milton Road, 0.2 mile south of Jenny Lind, and 

6.5 miles downstream from Cosgrove Creek.

Drainage area. 395 sq mi.

Records available.--January 1907 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 220 ft (from topographic map). Prior 

Eb Dec. 3, 1925, staff gage on center pier of bridge. Prior to October 1917, at datum 

7.00 ft higher and October 1917 to May 1928 at datum 2.00 ft higher.

Average discharge.--47 years (1908-23, 1924-56), 243 cfs (175,900 acre-ft per year).

Extremes.--Maximum discharge 'during year, 14,200 cfs Dec. 23 (gage height, 15.44 ft); no 

flow during some months.

1907-56: Maximum discharge observed, 50,000 cfs Jan. 31, 1911 (gage height, 

21.0 ft, present datum), from rating curve extended above 11,000 cfs; no flow during 

late summer of most years.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by Hogan Reservoir at Stockton flood-control dam beginning in 1930 (usable capacity, 75,000 acre-ft), by Bingham Reservoir (capacity, 775 acre-ft) on North 

Fork Calaveras River, and by some seepage of North Fork Stanislaus River water from 

diversion canals and reservoirs, normally not over 1.5 cfs. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 1011: 1907-10, 1912-28. WSP 1181: 1911. 

Cooperation. Two discharge measurements furnished by Bureau of Reclamation.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 3O

3.5

8.0

21

61

122

210

365

4.0

5.0

6.5

8.0

10.0

12.0

14.0

550

1,010

1,910

3,120

5,200

7,960

11,400

1.0

100

230

4.0

5.0

6.0

8.0

10.0

12.0

14.0

585

1,110

1,820

3,530

5,600

8,200

11,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

.5

6.6

6.6

6.2

19.9

0.66

39

Dec.

17~~ 9.2 

38

35

26

40

414

178

117

162

113

74

56

44

37

34

34

49

314

2,040

1,210

2,890

*10,500

*iq,30<3

8,940

*7,670

6,850

5,520

*3,810

2,890

2,040

66,448.2

2,143

131,800

Jan.

1,250 

1,200

1,000

750

*1,890

2,740

2,060

1,690

1,120

865

815

693

585

1 280

3^220

*5,900

3,220

2,790

*1,800

1,030

942

830

2,010

2,000

1,840

2,850

3,530

3,240

2,720

2,570

984

57,414

1,852

113,900

Feb.

775 

662

*580

524

480

442

411

380

355

334

317

305

296

290

260

254

195

22

14

14

14

15

109

48

148

380

484

516

524 _ -----

9,148

315

18,140

Mar.

5O4 

476

1,020

1.200

594

81

17

14

16

16

17

*17

17

17

16

14

14

14

12

11

9.8

9.4

8.6

7.8

6.7

5.8

4.9

4.6

4.9

4.9

4.9

4,159.3

134

8,250

Apr.

4.3 

4.3

4.0

3.4

2.8

2.5

2.5

Z,Z

2.5

2.5

4.9

7.0

7.0

8.2

87?

7.0

5.8

5.5

4.9

4.9

4.6

4.9

4.6

5.2

5.5

7.0

7.8

7.4

7.4

7.0

155.8

5.19

309

May

«fc*

8.6

14

14

17

16

14

16

14

18

32

46

57

64

83

100

114

136

138

138

138 138'

142

148

144

140

138

134

128

124

2,428.0

78.3

4,820

June

122 

122

128

126

130

142

152

171

180

173

*173

190

185

190

194

190

178

176

176

178

192

134

57

46

i§.

72

190

230

225

212

4,679

156

9,280

July

199 

204

W

199

*204

199

199

202

204

204

204

204

202

202

204

204

202

199

187

169

169

167

160 162-

173

182

180

180

180

180

180

5,906

191

11,710

Aug.

190" 190 

190

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

178

180

170

170

160

160

160

150

140

147J

140

140

5,338

172

10,590

Sept.

m120

110

120

130

130

130

130

130

130

100

95

90

100

100

90

55

65

60

45

40

35

55

80

20

6

5

5

4_

2,450

81.7

4,860

Calendar year 1955: Max lo,500 Min 0 Mean 288 Ac -ft 208,200

Water Lttfj1 year year 1955-56: lyoo-oo: Max FKIA 10,500 1U,OUU Mln raj.ii 0 w Mean pieeui 432 *o£ Ao-ft AC-xt* 313,700 Ji.c,/uu

* Discharge measurement or observation of no flow made on this day.

Note. No gage-height record July 27 to Aug. 19, Aug. 21 to Sept. 10, Sept. 12-30; discharge estlited on basis of recorded range In stage, and unpublished records for Mormon slough and Calaveras 

River Lverat Bellota.
348 SAN JOAQUIN RIVER BASIN

Bear Creek near Lockeford, Calif.

Location.-Lat 38°09'15", long 121°08'15", in NW^SE^ sec. 31, T. 4 N., R. 8 E., on right 

bank 15 ft downstream from county road bridge and 0.8 mile southeast of Lockeford.

Drainage area.--48.4 sq mi.

Records available.--November 1930 to September 1933, October 1943 to September 1956 

October 1926 to November 1930 at site 3 miles downstream; records not equivalent.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 90 ft (from topographic map). o * ^

Average discharge.--16 years (1930-33, 1943-56), 8.19 cfs (5,930 acre-ft per year)- median 

of yearly mean discharges, 5.6 cfs (4,050 acre-ft per year) .

Extremes.--Maximum discharge during year, 1,840 cfs Dec. 23 (gage height, 13 48 ft)- no 

flow during several months.

1930-33, 1943-56: Maximum discharge, 2,260 cfs Feb. 2, 1945 (gage height, 14 45 ft)' 

no flow for several months each year.

Remarks. Records good. No storage or diversion above station.

Rating table, water year 1955-56 (gage height, in feet, 

ana discharge, in cubic feet per second)

2.3

2.4

2.5

2.6

2.7

2.8 

3.0

.6

1.9

3.6

6.2

10

21

3.2

3.6

4.0

7.0

lO'.O

13.0

35

71

110

440

900

1,660

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

0

o

0

Dec.

0

*0

O

0

o

0

0

0

1.8

.6

.2

0

0

0

0

0

0

0

4.5

21

3.4

378

*1,460 

1,030

154

*370

247

70

*38

27

122

3,927.5

127

7,790

Jan.

53

75

34

26

346

213

111

228

62

76

86

46

37

451

1*1

*512

102

*58

41

185

96

83

209 

66

248

181

190

73

48

34

28

4,745

153

9,410

Feb.

21

16

*13

12

10

9.0

7.3

6.6

5.8

5.3

5.0

4.5

4.3

1*1

4.3

5.0

4.8

4.5

4.5

4.8

4.5

6.7

15 

29

18

28

19

12

12

326.0

11.2

647

Mar.

12

8.1

6.9

5.8

5.0

3.8

3.3

2.9

2.5

2.4

2.4

2.0

1.9

*1.7

1.9

1.6

1.4

1.3

1.1

1.1

1.0

1.0

1.0 

.9

.9

.8

,7

.6

.6

.3

-*!

77.1

2.49

153

Apr.

0.7

.5

.4

3.6

2.9

2.0

1.9

1.3

1.7

1.7

11

4.1

3.4

2.9

2.0

1.4

4.3

5.3

2.9

2.0

1.7

1.1

.9 

.5

.3

.9

1.6

1.0

.6

.il .

64.8

2.16

129

May

0.1

**.!

.1

.3

.2

.2

.1

.1

.1

.1

0

.3

1.0

JU1

1.0

.8

.7

.5

.5

.3

.2

.2

.1 

.1

0

0

0

0

0

0

0

8.4

0.27

17

June

(*)

.... -

0

0

0

July

(*)

(*)

0

 0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1,460 Min o Mean 18.7 Ac-ft 13,510

Water year 1955-56: Max 1,460 Min o Mean 25.0 Ac-ft 18,150

Peak discharge (base. 220 efsl. Dec. 23 (8 p.m.) 1,840 cfs (13.48 ft); Dec. 26 (6 p.m. 

(9.76 ft); Jan. 5 (7 p.m.) 581 cfs (8.08 ft); Jan. 8 (l a.m.) 389 cfs (6.54 ft); Jan. 15 

1,090 cfs (10.96 ft); Jan. 20 (3 p.m.) 294 cfs (5.67 ft); Jan. 23 (2 a.m.) 354 cfs (6.22 

Jan. 25 (11 a.m.) 388 cfs (6.53 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Mote.--No gage-height record June 1 to Sept. 30; discharge estimated on basis of obseri 

no flow.

) 852 cfs 

(9 p.m.) 

ft);
SAN JOAQUIN RIVER BASIN 349

. ,

ating time of pumps. Datum of gage is at mean sea level (levels by Bureau of Reclamaon).

Delta-Mendota Canal near Tracy, Calif.

Location. --La t 37°47'45", long 121°35'05", in SWijSW^ sec. 31, T. 1 S., R. 4 E., at Tracy 

Pumping Plant at intake to canal, 6 miles southeast of Byron and 10 miles northwest of 

Tracy.

Records available. June 1951 to September 1956.

Gage . Water-stage recorder on forebay, pressure gages on pump discharge lines, and operati 

tio

Average discharge. --5 years, 1,052 cfs (761,600 acre-ft per year).

Extremes . 1951-56 : Maximum daily discharge, 3,388 cfs June 15, 1955; no flow during several months each year.

Remarks . Discharge computed from records of operation of pumps. Water is diverted from 

Sacramento-San Joaquin Delta by way of Old River and a dredged channel to the Tracy 

Pumping Plant where it is lifted about 200 ft into canal. Water, less intermediate diversions, flows into Mendota Pool on San Joaquin River to replace water diverted at 

Friant Dam. The canal is a part of the Central Valley project. Records of chemical 

analyses and water temperatures for the water year 1956 are given in WSP 1453.

Cooperation. Records of daily discharge furnished by Bureau of Reclamation and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

2S

26

27

28

29

30

31

Oct.

1,721

1,721

1,722

1,722

1,718

1,692

1,833

1,835

1,831

1.841

1,421

1,320

1,322

1,324

1,062

1,061

963

898

863

862

669

678

678

532

533

498

497

497

497

498

499

Total] 34,808

Moan] 1,122

Ao-ftj 69,040

Nov.

499

463

463

427

391

391

391

392

391

498

500

392

392

392

319

319

319

212

212

213

213

213

212

176

175

176

175

632

550

412

10,510

350

20,850

Dec.

482

483

483

483

475

485

484

482

351

0

0

0

0

0

0

0

0

0

O

60

17

0

0

0

0

0

0

0

0

0

0

4,285

138

8,500

Jan.

0

0

0

0

0

0

0

0

138

0

0

0

45

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

183

5.9

363

Feb.

0

0

0

0

0

0

0

O

0

0

0

0

o

0

238

0

0

287

872

941

1.114

696

0

0

0

0

28

0

438

4,614

159

9,150

Mar.

0

0

0

0

0

0

141

69

*871

871

872

870

870

470

506

578

579

579

396

358

359

468

468

395

396

396

431

504

469

469

433

12,818

413

25,420

Apr.

433

432

431

430

430

428

466

467

467

505

872

872

869

690

615

871

872

871

871

871

871

870

873

874

*873

874

*761

254

224

252

19,489

650

38,660

May

252

324

361

362

288

874

876

876

*549

216

217

218

218

218

216

250

289

290

290

289

289

290

290

327

364

402

403

438

327

218

400

11,221

362

22,260

June

399

472

472

473

473

327

438

438

438

438

437

509

509

581

577

649

648

541

640

1,103

1,676

1,675

1,677

1,745

2.551

2,525

2,524

2,525

2,524

2,527

32,491

1,083

64,440

July

2.527

2,600

3,127

3,142

3,267

3,111

3,114

3,120

3,098

3,163

2,943

2,948

3,036

3,098

3,098

3,067

3,200

3,199

3,204

3,186

3,334

3,365

3,364

3,367

5.570

3,369

3,365

3,364

3,364

3,360

3,363

98,233

3,169

194,800

Aug.

3,359

3,295

3,361

3,361

5.565

3,190

3,189

2,946

5,009

3,033

3,051

3,035

3,029

3,029

3,032

3,034

3,055

5,005

5,001

5,000

2,728

2,718

2,765

2,769

2,703

2,609

2,546

2,355

2,422

2,306

*2.058

90,516

2,915

179,100

Sept.

1,985

1,985

1,986

*1,984

2,161

2.199

2,195

1,875

1,658

1,656

1,660

1,659

1,556

1,490

1,489

1,489

1,549

1,554

1,421

1,422

1,423

1,388

1,390

1,388

965

965

1,030

1,128

1,161

1,181

46,990

1,566

95,200

Calendar year 1955: Max 3,388 Min 0 Mean 1,602 Ac-ft 1,160,000

Water year 1955-56: Max 3,370 Min 0 Mean 1,000 Ac-ft 725,800

Discharge measurement made on this day.
350 SAM JOAQUIN RIVER BASIN

Salt Springs Reservoir near West Point, Calif.

Location. Lat 38°30', long 120°12', in SE^ sec. 33, T. 8 N., R. 16 E., at right end of 

bait Springs Dam on North Fork Mokelumne River, 2 miles upstream from Cold Creek and 

18 miles northeast of West Point.

Drainage area. 160 sq mi.

Records available.--March 1931 to September 1956.

Gage.--Staff gage read once daily. Datum of gage is 3,700 ft above mean sea level (levels 

by Pacific Gas & Electric Co.); gage readings have been reduced to elevations above 

mean sea level.

Extremes. Maximum contents observed during year, 140,000 acre-ft June 22, 23, 27, July 1- 

13 (elevation, 3,958.0 ft); minimum observed, 35,400 acre-ft Dec. 18 (elevation, 

3,819 .1 ft).

1931-56: Maximum contents observed, 140,000 acre-ft for several days in June or 

July each year 1948-54, 1956 (elevation, 3,958.0 ft); no contents Jan. 30 to Feb 5 

Feb. 18-26, 1932, Mar. 1-25, 1933, Jan. 29-31, 1945.

Remarks. Reservoir is formed by concrete-faced rock-fill dam, completed in 1931; storage 

began in March 1931. Capacity, 139,000 acre-ft between elevations 3,707 25 ft (powerhouse intake) and 3,957.0 ft (upper operating limit, 1 ft below top of radial gates) 

above mean sea level. Additional storage of 1,860 acre-ft is available for release to 

river through outlet drain at elevation 3,667.75 ft. Water is released through powerhouse just below dam and discharged into Tiger Creek powerhouse conduit (see following 

page). Records show contents available at 5 p.m., for use through powerhouse.

Cooperation.--Records of contents furnished by Pacific Gas & Electric Co. in connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, and 

contents, in acre-feet)

3,819.0

3,820.0

3,830.0

3,840.0

35,300

35,800

41,200

46,900

3,860.0

3,900.0

3,930.0

3,958.0

59,400

88,900

114,100

140,000

Contents, In acre-feet, at 5 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(OW

Oct.

86 . 100

85,300

84,400

83,900

83,200

82 , 500

82,000

81,200

80,200

/9,400

78,700

78,200

77,500

(6,800

76,200

75,300

74,500

73,900

73,200

72,600

71,900

71,100

70,200

69,400

68,700

68,000

67,400

66,800

65,900

64,900

63^900

3,866.5

-23,100

Nov.

63.500

62,600

62,000

61,300

60,600

59,500

58,500

57,800

57,200

56,700

55 , 900

55,200

54,100

53,300

52,600

52,300

51,700

51,100

50,400

49,500

49,200

48,700

48,200

47,600

47,100

46,300

45,400

44,600

44 , 100

43.700

3,834.5

-20,200

Dec.

43,200

42,700

42 , 100

41,200

40 , 500

40 , 200

40,000

39,300

39,100

38,600

38,100

37,500

36,900

36,500

36,000

35,600

35,500

5.5 . 400

35 , 800

36,900

37,900

48,800

82 , 600

92,100

94,700

98,700

99,700

100,500

100,800

101,000

101,100

3,914.9

+57,400

Jan.

101,100

100 , 800

100 , 400

100,200

100,000

99,700

99,400

99,000

98,500

98,100

97,700

97,200

96,800

96,700

97,600

102 , 800

103,400

104,000

104,100

104,200

104,200

104,100

105,400

106,500

105,800

106,300

106,100

105,800

105,400

105,200

104,900

3,919.4

+3,800

Feb.

104,000

103,300

102,500

101,800

101,100

100 , 300

100,700

100,200

99,400

98,600

97,800

97,200

96,400

95,800

95,100

94,100

93,100

92,900

92 , 100

91,400

90 , 900

90,300

89,700

88,800

87,900

87,100

86,500

85 , 800

35 . 100

3,895.2

-19,800

Mar.

84.200

83 , 500

82 , 800

82.200

81,500

80,800

80 , 100

79,200

78,600

77,900

77,200

76,500

75,900

75,300

74,500

73,900

73,200

72,800

72,500

72,100

72 , 100

71,900

71.700

72,100

72,500

72,800

73,100

73,900

74,300

75,000 

75,300

3,882.3

-9,800

Apr.

75,400

75,300

75,100

74,700

74,500

74.400

75,000

75,800

76,400

77,700

78,300

79,100

79,100

78,900

78,800

78,300

78,300

78,300

78,500

79,300

80,700

82,000

84,200

86,600

89,300

91,300

92,300

93 , 100

93,700

94.500

3,907.0

+19,200

May

95,700

97,300

99,200

104,600

107,300

109,400

111,000

112,400

113,200

114,000

114,700

115,200

115,500

115,500

116,100

117,400

119,700

122,300

125,400

128,800

133,700

137,000

136,000

135,500

135,200

135,500

135,800

134,900

135,000

135,300 

135,900

3,953.8

+41,400

June

135,700

135,800

136,300

136,400

135,800

135,800

136,700

138,400

138,700

138,800

139,000

139,400

139,400

139,400

139,400

139,100

139,500

139,500

139,300

139,300

139,600

140,000

140,000

139,500

139,500

139,300

140,000

139,700

139,800

^-_i-°°-

3,957.8

+3 , 900

July

140,000

140,000

140,000

140,000

140,000

140,000

140,000

140 , 000

140,000

140,000

140,000

140,000

140,000

139,800

139,400

139,200

139,200

139,300

139,400

139,500

139,300

139,000

138,900

138,900

138,900

138,900

138,800

138,300

137,600

137,000 

136,700

3,954.6

-3,100

Aug.

136,200

135,800

135,500

134,700

133,800

133,300

132,600

132,400

132,300

132,100

131,600

130,900

130,700

130,500

130,400

130,300

130,100

129,700

129,100

128,600

128,400

128,300

128,100

127,800

127,100

126,200

125,400

124,800

124,500

124,200 

123,800

3,940.8

-12,900

Sept.

123,000

122,200

121,300

120,800

120,400

120,000

119,700

119,300

118,600

118,000

117,900

117,500

117,300

117,100

117,000

116,300

115,900

115,700

115,500

115,100

114,500

113,800

113,000

112,500

112,200

111,800

111,500

111,000

110,300

109j500

3,924.7

-14,300

Calendar year 1955.................... * +84,000

Water year 1955-56.................... * +22,500

t Elevation, In feet, at end of month. 

* Change In contents In acre-feet.
SAN JOAQUIN RIVER BASIN 351

Tiger Creek powerhouse conduit, below Salt Springs Dam, Calif.

Location.--La t 38°30', long 120°13', in SWtj sec. 33, 'T. 8 N., R. 16 E., on left bank 

l,uoo ft downstream from Salt Springs Dam and powerhouse.

Records available.--June 1931 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 3,700 ft (from topographic nap). Auxiliary staff gages in stilling wells above and below control.

Average discharge.--25 years, 285 cfs (206,300 acre-ft per year).

Extremes.--1931-56: Maximum daily discharge, 577 cfs June 22, 1945; no flow at times each 

year.

Rera-trks.--Records excellent. Conduit conveys water of North Fork Mokelumne River from 

tailrace of Salt Springs powerhouse to forebay of Tiger Creek powerhouse. Since 

December 1952, records include Bear River diversion to Salt Springs powerhouse.

Cooperation.--Water-stage-recorder graph and eight discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Moan

Ac-ft

Oct.

519

420

517

518

618

514

516

514

513

508

508

507

505

514

508

429

524

528

524 

528

528

528

438

531

555

534

535

534

534

534

534

15,897

513

31,530

Nov.

526

526

526

*526

524

524

525

528

530

£21

528

528

518

501

498

498

501

510

508 

510

508

510

510

508

510

500

496

507

500

494

15,409

514

30,560

Dec.

494

495

490

488

486

367

451

480

472

481

478

475

*472

490

42£

454

254

254

249

251

302

150

126

126

125

125

125

125

124

125

125

10,155

328

20,140

Jan.

124

70 -

45

1*1

6.4

6.4

65

124

139

164

346

496

500

463

424

343

222

367

492 

496

496

486

448

466

478

454

448

469

463

498

496

10,100.5

326

20,030

Feb.

474

504

516

518

518

520

523

526

530

552

535

535

532

530

528

525

526

526

520

520

520

513

504

526

523

522

518

525

520

....

15,116

521

29,980

Mar.

524

525

516

423

513

515

515

*521

522

522

371

519

523

523

523

523

523

398

it

526

522

517

512

131

506

488

498

498

498

498

15,454

499

30,650

Apr.

383

513

514

517

*515

525

525

374

523

525

522

525

525

523

392

520

525

527

527 

525

528

398

406

329

322

407

124

0

0

0

12,539

418

24,870

May

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

120

446

524

524

524

S24

*524

52>8

3,724

120

7,390

June

546

538

538

528

528

528

528

528

528

528

516

508

514

511

508

506

496

494

472 

454

437

279

430

401

401

401

405

404

403

405

14,263

475

28,290

July

411

268

476

481

486

339

493

496

496

498

496

*499

496

493

496

494

492

492

494 

496

496

341

508

508

508

511

511

511

511

511

450

14,758

476

29,270

Aug.

510

510

508

508

511

514

514

512

511

511

511

511

39§

522

524

523

522

520

520 

522

522

522

520

508

516

517

517

517

516

517

514

15,866

512

31,470

Sept.

512

512

512

512

514

512

510

510

508

506

*506

506

508

498

496

493

492

490

468 

474

484

504

505

505

505

510

*514

517

518

518

15,119

504

29,990

Calendar year 1955 : Max 554 Min o Mean 377 Ac-ft 273,200

Water year 1955-56 : Max 546 Min 0 Mean 433 Ac-ft 314,200

Discharge measurement made on this day.
352 SAN JOAQUIN RIVER BASIN

North Fork Mokelumne River below Salt Springs Dam, Calif.

Location. La t 38°29', long 120°13', in SWi^ sec. 33, T. 8 N., R. 16 E., on left bank 

OTSmile downstream from Salt Springs Dam and 1.7 miles upstream from Cold Creek.

Drainage area. 160 sq ml.

c ?^^ available. --September 1926 to September 1956. Published as "above Moore Creek" 

1926-30.

Gage. Water-stage recorder. Altitude of gage is 3,600 ft (from topographic map). Prior to 

Sept. 12, 1928, at site 100 ft upstream and Sept. 12, 1928, to Sept. 23, 1940, at 

present site, at datum 2.0 ft higher.

Average discharge. --2 9 years (1927-56), 461 cfs (333,800 acre-ft per year), combined flow 

of North Fork Mokelumne River and Tiger Creek powerhouse conduit minus Bear River-Cold 

Creek diversion.

Extremes. --Maximum discharge during year, 6,450 cfs May 22 (gage height, 12.04 ft)- minimum daily 3.6 cfs Dec. 14-17.

1926-56: Maximum discharge, 16,000 cfs Nov. 21, 1950 (gage height, 17.20 ft), from 

rating curve extended above 3,000 cfs on basis of computations of flow over dam and 

discharge through powerhouse; minimum daily, 0.3 cfs Mar. 31, Apr. 1, 1931.

Remarks. --Records good except those for periods of no gage-height record, which are fair 

Plow regulated since 1931 by Salt Springs Reservoir (see p. 350 ). Diversion from Bear 

River and Cold Creek to Salt Springs powerhouse averaged 182 cfs during 1966 water year. 

Diversion above station through Tiger Creek powerhouse conduit (see preceding page).

Cooperation. --Water-stage-recorder graph and nine discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second) 

(Shifting-control method used Dec. 6-21)

0.9 2.8 3.5 315

1.0 4.3 4.0 470

1.2 9.1 5.0 900

1.4 18 6.0 1,380

1.7 39 8.0 2,550

2.0 68 10.0 4,300

2.5 134 12.0 6,400

3.0 213

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

9.1

9.7

9.4

9.1 

8.8

8.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.8

7.5

7.5

7.5

7.5

7.2

7.5

7.5

7.5

7.5

7.2

7.2

7.2

7.0

775

243.5

7.85

483

Nov.

6.8

6.8

6.5

*6.5 

6.5

6.5

7.8

7.5

7.8

7.8

7.8

7.8

¥70- 8.0

8.0

8.0

7.8

7.5

7.5

7.5

8.0

7.2

7.0 

7.0

6.8

6.5

6 2 672-

6.2

6.2

215.7

7.19

428

Dec.

6.8

6.5

6.0

5.8 

6.8

7.3

4.3

4.1

4.3

4.0

3.8

3.8

*3.7

3.5

3.5

3.5

3.5

4.0

8.2

8.5

7.8

a280

a780 

a780

a780

a780

a790

a7§5

a770

774

770

7,393.7

239

14,670

Jan.

770

824

855

886 

891

886

810

756

742

711

453

346

340

755

432

526

648

489

361

361

361

376

414 

394

385

418

414

388

352

a340

a340

16,654

537

33,030

Feb.

a320

a340

338

338 

338

335

332

330

315

310

315

315

313

315

320

310

315

315

315

315

315

322

328 

310

306

310

ITs- 261

sis

9,226

318

18,300

Mar.

313

313

315

409 

308

304

301

*299

297

297

464

290

288

285

283

281

281

429

277

277

 ill

281

288

294

435

297

225

192

294

294

292

9,580

309

19,000

Apr.

430

270

288

285 

*281

274

274

415

274

274

279

283

281

283

422

283

279

281

283

283

283

391

415

514

522

432

768

882

887

QQO OOC

11,998

400

23,800

 May

*882

887

887

904 

909

633 ~<5?Z

922

927

927

927

927

932

936

940

940

918

954

922

963

985

3,880

5.540 

*4,480

3,230

3,020

3,080

2,560

2,490

*2,490

3,100

52,814

1,704

104,800

June

2,790

2,540

2,910

3.. 150 

1,970

1,740

al,300

a2,000

a2,600

a2,700

a2,600

2,250

2,540

2,120

1,950

1,500

1,400

1,950

2,360

1,330

1,450

1,790

2,020 

1,830

1,690

1,580

1,680

1,720

1,460

1.140

60,040

2,001

119,100

July

1,000

1.010

488

620 

428

567

382

370

397

332

201

*210

74

14

14

14

15

14

14

14

14

14

14 

14

15

14

14

14

13

13

12

6,329

204

12,550

Aug.

12

T5

12

12 

12

11

11

11

11

11

11

11

11

11

11

11

11

10

To

11

11

11

11

10

10

10

10

10

10 

10

10

336

10.8

666

Sept.

10

10

11

T3 

10

10

10

10

10

10

*10

10

10

10

9.7

9.7

9.7

9.7

9.7

9.7

9.7

9.7

9.7 

9.7

9.7

9.7

*10

11

11

11

300.4

10.0

596

Calendar year 1955 : Max 790 Min 3.5 Mean .45.9 Ac-ft 33,230

Water year 1955-56: Max 5,340 Mln 3.5 Mean 478 Ac-ft 347,400

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of recorded range in stage and record of 

powerhouse operation.
SAN JOAQUIN RIVER BASIN 

Cold Creek near Mokelumne Peak, Calif.

353

Location. Lat 38°31', long 120°13 I , in sec. 28, T. 8 N., R. 16 E., on right bank 2.4 miles 

upstream from mouth and 6 miles southwest of Mokelumne Peak.

Drainage area. 23 sq mi, approximately.

Records available.--July 1927 to November 1942, October 1943 to September 1956. 

Gage. Water-stage recorder. Altitude of gage is 6,000 ft (from topographic map). 

Average discharge. 28 years, 63.0 cfs (45,610 acre-ft per year).

Extremes.--Maximum discharge during year, 4,670 cfs Dec. 23 (gage height, 9.00 ft), from 

rating curve extended as explained below; no flow Oct. 17-25.

1927-56: Maximum discharge, 5,500 cfs Nov. 18, 1950 (gage height, 9.69 ft), from 

rating curve extended above 900 cfs on basis of slope-area determination of peak flow; 

no flow for many days in 1931, 1948-49, 1954-55.

Remarks. Records good. No storage or diversion above station.

Cooperation. Water-stage-recorder graph and six discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 843: 1928(M). WSP 1137: 1938(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

.1

.3

.9

1.8

3.2

5.3

11

1.4 

1.8 

2.2 

3.0 

4.0 

5.0 

6.0 

8.0

92

218

485

940

1,580

3,500

0.1

.3

.9

1.8

3.2

4.8

7.1

9.7

1.5 

2.0 

2.5 

3.0 

4.0 

5.0 

6.0 

7.0

28

63

122

207

485

940

1,580

2,450

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

~7T 0 1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

0

0

0

0

0

0

0

0

.1

.1.1

.1

.1

.1

2.2

0.07

4.4

Nov.

~~JT 0 1

* . i

!i.1

.1.1.1.1.1

.1.1.1

.2

.2

.2

.3

.5

1.2

1.0

3.4

.7

3.2

2.4

1.4

1.3

2.2

13

15

13

60.5

2.02

120

Dec.

76- 12

22

17

15

226

149

74

243

104

66

42

24

20

20

17

16

19

65

264

377

2.630

2,400

377

206

183

124

100

84

76

68

8,066

260

16,000

Jan.

63

60

57

56

54

54

52

52

48

47

48

58

57

93

664

385

178

122

101

111

103

226

179

106

112

86

80

72

70

61

61

3,516

113

6,970

Feb.

58

54

52

54

54

50

49

49

50

48

47

52

52

54

57

57

49

51

42

42

40

39

43

38

41

42

36

38

55^

_

1,371

47.3

2,720

Mar.

36

35

40

42

41

45

40

40

45

50

50

45

40

45

45

60

80

90

90

85

105

120

145

180

190

180

145

150

180

180

160

2,779

89.6

5,510

Apr.

115

90

82" 76

114

155

193

205

246

209

138

109

94

84

82

98

114

146

193

243

251

296

317

336 283"

207

164

152

166

207

5,165

172

10,240

May

248

*283

383

614

299

266

211

178

207

167

160

142

130

149

234

330

355

381

408

529

621

682

623

*534

500

524

411

378

375

440

425

11,187

361

22,190

June

390

428

475

350

288

296

333

358

370

404

347

330

304

322

234

203

241

285

216

173

199

227

216

199

180

170

160

152

122

94

8,066

269

16,000

July

76

64

56

52

48

43

40

39

35

31

*25

20

17

15

13

12

11

10

9.7

8.7

7.9

11

*17

13

7.6

7.6

5.7

4.6

4.0

3.4

3.0

710.2

22.9

1,410

Aug.

2 6

2 1.'9 jl

1.8

1.6

1.4

1.2

1.1

1.0

.8

.7

.6

.5

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

22.5

0.73

45

Sept.

0.2

.2

.2

.2

.2

.3

.2

.1

.2

*.2

.2

.2

.2

.2

.1

.1

.1

.1

.5

i6.

.3

.2

.2

.2

.2

.1

.2

.2

.1

.1

6.1

0.20

12

Calendar year 1955: Max 2,630 Min 0 Mean 63.7 Ac-ft 46,140

Water year 1955-56: Max 2.630 Min 0 Mean 112 Ac-ft 81; 220

Peak discharge (base. 500 cfs). Dec. 6 (1 p.m.) 502 cfs (4.05 ft); Dec. 23 (2 a.m.) 4,670 cfs 

(9.00 ft); Jan. 15 (5 p.m.) 1,440 cfs (5.81 ft); Jan. 22 (7:30 p.m.) 520 cfs (4.10 ft); May 4 (1:30 

a.m.) 1,050 cfs (5.22 ft); May 22 (7 p.m.) 1,030 cfs (5.18 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 2, Feb. 1, Mar. 6 to Apr. 2, June 25-27, July 11-13; discharge 

estimated on basis of 1 discharge measurement, recorded range in stage, normal recession, and flow 

through Salt Springs powerhouse.
354 SAN JOAQUIN RIVER BASIN

Bear River near Salt Springs Dam, Calif.

Location. Lat 38°29', long 120°18' , in sec. 2, T. 7 N., R. 15 E., on right bank 200 ft 

upstream from diversion to Tiger Creek powerhouse conduit and highway bridge, 0.7 mile 

upstream from mouth, and 4 miles west of Salt Springs Dam.

Drainage area. 48 sq mi, approximately.

Records available. October 1951 to September 1956.

Gage.--Water-stage recorder and concrete weir. Altitude of gage is 3,600 ft (from topographic map).

Average discharge.--5 years, 92.6 cfs (67,040 acre-ft per year).

Extremes.--Maximum discharge during year, 1,400 ofs Dec. 23 (gage height, 4.00 ft), from 

rating curve extended above 560 cfs by logarithmic plotting; minimum, 2.1 cfs Nov. 3-6, 

27-30.

1951-56: Maximum discharge, 1,640 cfs June 1, 1952 (gage height, 4.12 ft), from 

rating curve extended above 330 cfs; minimum, 2.1 cfs Nov. 14, 1954, Nov. 3-6, 27-30, 

1955.

Flood in November 1950 reached a stage of 11.2 ft, from floodmarks (discharge unknown).

Remarks. Records fair. Plow regulated by Bear River and Lower Bear River Reservoirs 

Tcombined capacity, 55,500 acre-ft). Water diverted for power from Lower Bear River 

Reservoir through tunnel to Salt Springs powerhouse on North Pork Mokelumne River since 

Dec. 3, 1952. Water diverted occasionally from Cold Creek into Lower Bear River Reservoir.

Cooperation.--Water-stage-recorder graph and eight discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

1.0

1.1

1.2

1.3 

1.5

1.8

6.7

14

25

59

1.9 

2.4 

3.0 

3.5 

4.0

160

348

640

980

1,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9 

3.9 

3.9

3.9

3.9

3.9

3.9

3.9

3.9 

3.9

120.9

3.90

240

Nov.

3.4

3.0

2.1

#2.1

2.1

2.1

2.5

3.0

3.0

3.0

2.5

2.5

2.5

3.4

3.4

3.4

3.4

5.5

7.3

8.0

u

s!g

3.4

3.0

2.5

2.1

2.1

2.1

2.1

104.8

3.49

208

Dec.

7.4

6.1

4.4

3.4 379-

62

14

10

26

12

8.

6.

*6.

6.

6.

6.7

14

14

59

90

76

686 

1.100 

303

179

258

169

120

92

74 

63

3,488.4

113

6,920

Jan.

57

51

287

336

348

332

332

320

316

316

183

40

S8-

153

285

204

142

112

97

109

109

180 

222 

151

193

176

142

117

97

85 

74

5,554

179

11,020

Feb.

65

55

51

48

46

44

40

38

37

35

35

33

32

30

29

29

28

28

28

28

29 

30 

26

_24

24

24

24

24

1,023

35.3

2,030

Mar.

24

25

25

25

25

24

*26

28

26

25

25

25

26

28

29

32

35

40

40

44

46 

51 

55

63.

61

59

57

57

59 

59

1,167

37.6

2,310

Apr.

55

48

46

44

*44

46

48

50

53

55

53

48 ' 44

42

40

40

42

44

46

50

51

53

59 

61

61

76

195

462

462

515

2,933

97.8

5,820

May

*580

580

586

646

622

610

604

598

610

610

610

610

598

598

444

63

61

59

55

53

53

243 

628 

628

306

37

32

29

610 

8Q5

12,607

407

25,010

June

854

75T

833

718

536

520

564

598

616

616

604

536

505

490

396

268

260

324

352

207

215

237 

241 

241

186

173

186

176

139 

onBU

12,462

415

24,720

July

~~9~. 29 4

8.7

8.0

8.0

8.0

8.0

8.0

7.3

7.3

7.3

*7.3

8.0

7.3

7.3

6.7

6.7

6.7

6.7

6.1

6.1

H6.7

6.1

6.1

6.1

6.1

6.1

6.1 

6.7

238.9

7.71

474

Aug.

6.7

TT7

6.1

6.1

6.1

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.5

6.1

6.1

6.1 

6.1 

5.5

5.5

5.5

4.9

479

4.9

4 9

174.1

5.62

345

Sept.

4.4

4.4

4.9

4.9

4.9

4.9

3.0

TT4

4.9

4.9

*4.9

4.9

4.9

4.4

4.9

4.9

4.4

4.4

8.0

6.1

5.5

4.4 

4.4

5.5

5.5

5.5

4.9

4.4

4.4

4.4

146.3

4.88

290

Calendar year 1955: Max 1,100 Min 2.1 Mean 30.8 Ac-ft 22,300

Water year 1955-56 : Max 1,100 Min 2.1 Mean 109 Ac-ft 79,390

* Discharge measurement made on this day.
SAN JOAQUIN RIVER BASIN 355

Middle Fork Mokelumne River at West Point, Calif.

Location.--Lat 38°23'23", long 120°31'32", in SE^NE^- sec. 10, T. 6 N., R. 13 E., on right 

bank 200 ft downstream from highway bridge, 0.6 mile south of West Point, and 4.5 miles 

upstream from South Fork.

Drainage area. 67.2 sq mi.

Records available.--October 1911 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,450 ft (from topographic map). Prior 

tfo Oct. 6, 1926, staff gage at site 1,200 ft upstream at different datum. Oct. 6, 

1926, to Aug. 18, 1928, staff gage at present site and datum.

Average discharge . 44 years (1912-56), 59.2 cfs (42,860 acre-ft per year).

Extremes. Maximum discharge during year, 4,320 cfs Dec. 23 (gage height, 8.98 ft); minimum daily, 2.4 cfs Oct. 1.

1911-56: Maximum discharge, that of Dec. 23, 1955; no flow Aug. 23 to Sept. 14, 

1931, Sept. 9, 1934.

Remarks. Records good except those for periods of backwater from temporary dams, which 

are fair. Flow slightly regulated by Calaveras Reservoir (capacity, 1,740 acre-ft), 

6 miles above station, beginning in January 1940. Several small diversions above station.

Rating tables, water year 1955-56, except periods of backwater from temporary dams (gage 

height, in feet, and discharge, in cubic feet per second)

0.9

1.0

1.1 

1.4 

1.7 

2.0

Oct. 1 to Dec. 23

1.8 2.5

3.3 3.0

7.0 4.O

24 5.0

46 7.0

8£ 9.0

Dec. 24 to Sept. 30

172

284

575

1,020

2,340

4,340

0.9

1.0 

1.2 

1.4 

1.7 

2.0

6.6

10

92

4.0 

5.0 

6.0

148

220

324

624

1,040

1,640

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac- ft

Oct.

2.4

2.6

2.6

3.0

*3.6

4.O

4.0

3.7

4.0

4.4

4.8

4.4

4.4

4.0

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.5

4.8

4.8

5.2

5.2

5.5

5.2

5.2

5.2

140.1

4.52

278

Nov.

5.2

5.2

5.2

4.8

4.8

4.8

5.9

*5.2

4.8

4.4

4.4

4.8

8.4

11

11

11

16

18

10

11

23

15

12

10

8.9

8.9

8.9

8.9

8.4

9.4

269.3

8.98

534

Dec.

27

20

17

15

15

114

67

38

57

42

31

27

25

*23

21

21

30

37

322

308

192

1,310

*5.450

*1,600

733

1,120

839

534

408

321

283

12,047

389

23,890

Jan.

280

280

2E7

203

442

321

257

247

218

206

198

186

182

386

797

787

508

420

366

360

352

437

759

501

625

876

766

554

462

400

355

12,958

418

25,700

Feb.

313

280

262

*247

232

215

203

191

179

172

165

160

153

148

141

135

133

133

126

137

133

162

265

186

162

160

150

148

148

5,239

181

10,390

Mar.

141

141

144

141

155

*144

133

128

128

126

126

122

121

119

117

115

TT9

121

128

128

130

133

146

150

144

148

144

133

128

130

146

4,127

133

8,190

Apr.

146

133

124

119

115

115

115

113

TT3

122

139

135

137

*128

122

122

122

121

117

117

119

119

122

122

128

198

TTO

150

139

135

3,877

129

7,690

May

130

126

135

386

310

270

307

267

304

270

283

254

227

203

189

179

170

167

160

155

153

150

*150

144

133

124

119

112

105

98

95

5,875

190

11,650

June

92

90

86

85

82

77

76

72

68

67

67

66

65

69

71

74

71

54

56

70

66

62

58

54

51

*46

41

36

34

33.

1,939

64.6

3,850

July

30

27

23

22

22

21

22

22

22

22

22

22

22

22

22

22

22

19

18

21

21

22

21

19

19

20

13

9.1

14

19 

19

641.1

20.7

1,270

Aug.

15

21

20

21

20

22

21

*18

15

17

17

17

16

16

19

21

20

17

16

17

19

16

14

14

.12.

16

18

19

21

21 

17

553

17.8

1,100

Sept.

16

15

14

*15

16

15

16

16

16

15

14

15

15

14

14

13

14

13

29

29

25

25

23

27

33

34

34

32

31

31

619

20.6

1,230

Calendar year 1955: Max 3,450 Mln O.5 Mean 66.5 Ac-ft 48,170

Water year 1955-56: Max 3,45O Mln 2.4 Mean 132 Ac-ft 95,77O

Peak discharge (base. 400 cfs).--Dec. 19 (lo p.m.) 488 cfs (3.71 ft); Dec. 23 (5:30 p.m.) 4,320 

cfs (8.98 ft); Dec. 26 (5 p.m.) 1,730 cfs (6.14 ft); Jan. 5 (4 p.m.) 52B cfs (3.70 ft); Jan. 15 

(7 p.m.) 1,440 cfs (5.70 ft); Jan. 22 (11 p.m.) 900 cfs (4.71 ft); Jan. 26 (6 p.m.) 1,240 cfs (5.37 

ft); May 4 (5:30 p.m.) 471 cfs (3.51 ft).

* Discharge measurement made on this day.

Note. Backwater from temporary dams Oct. 1-5, Oct. 16 to Nov. 8, June 17 to Sept. 30.
356 SAN JOAQUIN RIVER BASIN

South Fork Mokelumne River near West Point, Calif.

Location.--Lat 38°22'07", long 120°32'52", in SWifSElr sec. 16, T. 6 N., R. 13 E., on right 

bank 600 ft downstream from highway bridge, 2.3 miles upstream from mouth, and 2.3 miles 

southwest of West Point.

Drainage area.--73.8 sq mi.

Records available.--October 1933 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,940 ft (from topographic map).

Average discharge.--23 years, 85.7 cfs (62,040 acre-ft per year).

Extremes. Maximum discharge during year, 6,920 cfs Dec. 23 (gage height, 14.8 ft, from 

floodmarks), from rating curve extended above 1,800 cfs on basis of slope-area determination of peak flow; minimum, 9.8 cfs Oct. 1.

1933-56: Maximum discharge, that of Dec. 23, 1955; no flow Aug. 6, 7, Aug. 12 to 

Sept. 26, 1934.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Small diversions above station for irrigation and domestic use.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1-5, June 24 to Sept. 3o)

4.2

4.3 

4.5 

4.7 

5.0

Oct. 1 to Dec. 22

9.5

12

18

Dec. 23 to Sept. 30

5.5

6.0 

6.5 

7.0 

8.0

160

298

500

830

1,670

3.6 

3.8 

4.0 

4.3 

4.6 

5.0

156

295

5.5 525

6.0 785

7.0 1,490

8.0 2,390

10.0 3,940

11.0 4,640

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

10~ 9.8

10

10

»10

11

11

11

11

12

12

12

12

12

12

12

12

12

13

12

13

13

12

12

12

13

14

14

14 

14

13

370.8

12.0

735

Nov.

13

T4

14

14

13

14

14

*14

13

13

14

14

20

23

18

20

26

17

18

19

43

23

19

18

17

16

16

16

17 

16

526

17.5

1,040

Dec.

39

34

23

20

18

158

77

46

78

51

39

34

30

*25

20

20

35

50

400

400

250

1,500

*4,000

*2,000

900

1,300

*900

675

520 

403

14,403

465

28,570

Jan.

349

358

271

245

490

394

322

287

248

234

224

213

208

464

982

965

655

535

452

448

426

530

857

625

746

1,020

929

686

550 

450

400

15,563

502

30,870

Feb.

360

320

300

*280

263

238

220

207

194

184

178

172

165

159

151

140

142

137

137

159

134

175

300

210

194

190

175

172

172

5,828

201

11,560

Mar.

165

162

165

165

178

*165

151

148

145

145

140

134

132

132

127

130

130

135

140

140

145

150

165

160

155

160

150

140

140 

150

160

4,604

149

9,130

Apr.

155

140

135

130

125

125

125

125

125

140

150

150

145

*140

137

145

151

151

151

151

148

145

145

145

148

238

197

187

178

165

4,492

150

8,910

May

156

148

157

478

376

322

349

300

372

326

331

287

252

224

204

190

175

165

153

145

140

129

*122

117

112

105

101

97

93 

91

6,304

203

12,500

June

83

80

77

75

72

68

66

65

64

62

61

59

57

60

60

57

55

53

53

53

53

52

50

48

54

*59

56

51

56 

59

1,818

60.6

3,610

July

60

62

61

59

52

54

55

55

53

53

51

47

45

45

48

45

48

51

48

48

54

45

49

48

44

44

42

42

40 

39

1,525

49.2

3,020

Aug.

36

35

34

32

31

30

29

*28

27

25

25

25

25

25

25

24

24

24

24

24

23

23

23

23

23

22

22

22

22 

22

22

799

25.8

1,580

Sept.

21

21

21

*21

20

19

19

19

19

19

19

19

20

20

20

21

20

1-8

25

27.

21

19

18

17

17

16

17

18

19 

19

589

19.6

1,170

Calendar year 1955: Max 4,000 Mln 6.6 Mean 82.0 Ac-ft 59,360

Water Water year year 1955-56: 1955-56: Max Max 4,000 4,000 Mln Mln 9.8 9.8 Mean Mean 155 155 Ac-ft Ac-ft 112,700 112,700

Peak discharge (base, 500 efs). Dec. 23 (time unknown) 6,920 cfs (14.8 ft); Jan. 15 (8 p.m.) 

1,620 cfs (7.15 ft); Jan. 22 (10 p.m.) 1,040 cfs (6.41 ft); Jan. 26 (5 p.m.) 1,370 cfs (6.85 ft); 

Feb. 22 (12 p.m.) 515 cfs (5.48 ft); May 4 (3:30 p.m.) 600 cfs (5.65 ft).

* Discharge measurement made on this day.

Mote.--No gage-height record Dec. 14-27, Jan. 29 to Feb. 4, Mar. 16 to Apr. 14, July 29 to Aug. £ 

Aug. 11 to Sept. 4; discharge estimated on basis of 7 discharge measurements and records for Middle 

Fork Mokelumne River near West Point.
SAN JOAQUIN RIVER BASIN 

Mokelumne River near Mokelumne Hill, Calif.

357

Location. Lat 38°18i40", long 120°43'10", in sec. I, T. 5 N., R. 11 E., on left bank just 

downstream from highway bridge, 1.2 miles northwest of Mokelumne Hill and 8 miles downstream from confluence of North and South Forks.

Drainage area.--538 sq mi.

Records available.--January to June 1901, May 1903 to December 1904, November 1927 to September 1956.Published as "at Electra" 1901, 1903-4.

Gage.--Water-stage recorder. Datum of gage is 589.88 ft above mean sea level (levels by 

Division of Highways, Department of Public Works, State of California). Jan. 1 to 

June 30, 1901, and May 11, 1903, to Dec. 31, 1904, staff gage at site 3 miles upstream at different datum. Nov. 10, 1927, to Aug. 26, 1952, water-stage recorder at 

site 40 ft upstream at same datum.

Average discharge.--28 years (1928-56), 948 cfs (686,300 acre-ft per year).

Extremes.--1903-4: Maximum discharge observed during water year, 17,500 cfs Feb 24 (gage 

neight, 12.2 ft); minimum observed, 5 cfs Aug. 13-15, 17, 18.

1955-56: Maximum discharge during water year, 23,500 cfs Dec. 23 (gage height 

15.42 ft); minimum daily, 250 cfs July 22.

1903-4, 1927-56: Maximum discharge, 33,700 cfs Dec. 3, 1950 (gage height 18 5 ft)- 

minimum observed, 5 cfs Aug. 13-15, 17, 18, 1904.

Revisions.--The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated. v >

WSP

671 

811 

843,861 

901 

981 

1041

Water 

year

1928 

1936 

1938 

1940 

1943 

1945

Date

Mar. 25, 1928 

Feb. 22, 1936 

Dec. 11, 1937 

Mar. 31, 1940 

June 1, 1943 

Feb. 2, 1945

Discharge 

(cfs)

25,700 

17,400 

23,000 

14,900 

14,500 

21,300

Gage height 

(feet)

16.10 

13.39 

15.25 

12.50 

12.36 

14.7

Remarks. Records excellent except those for period of no gage-height record, which are 

fair. Flow regulated by Salt Springs Reservoir beginning in 1931 (see p. 350), several 

smaller reservoirs, and four powerplants. Diversions above station for irrigation and 

domestic use.

Revisions. Revised figures of discharge, in cubic feet per second, for the water years 

1903-4, superseding those published in WSP 299, are given herein. Complete table of 

daily discharge is given for water year 1904, but only revised figures are given for 

water year 1903.

Date

1903

June 1

2

3

4

5

6

Discharge

5,560

6,240

5,780

4,910

3,700

4,700

Date

1903-Con.

June 7

8

9

10

11

12

Discharge

4,490

4,700

3,890

3,170

4,090

2,550

Date

1903-Con.

June 13

14

15

16

17

18

Discharge

2,840

3,000

2,840

1,190

1,280

1,910

Date

1903-Con.

June 19

20

21

22

23

24

Discharge

2,550

2,280

2,150

2,150

1,680

1,680

Date

1903-Con.

June 25

26

27

28

29

30

Discharge

1,910

1,680

1,6SO

1,370

1,100

940

Month Maximum

6,240

Minimum

940

Mean

2,934

Runoff in 

acre-feet

174,600

493801 O - 59 - Z4
358 SAN JOAQUIN RIVER BASIN

Mokelumne River near Mokelumne Hill, Calif.--Continued 

Discharge, in cubic feet per second, water year October 1903 to September 1904

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

200

200

140

200

260

200

200

200

200

200

200

200 

140 

200

140

90

140

140

140

200

200

200

200

140

140

200

200

140

200

200

200

5,610

181

11,130

Nov.

200

250

260

200

200

200

200

260

330

260

330

470 

4,820 

2,360

1,400

1,020

470

330

330

1,500

1,800

1,300

1,100

1,300

1,300

1,020

780

620

620

470

25,650

855

50,880

Dec.

540

400

400

260

260

200

200

140

140

140

200

200 

140 

9090-

90

90

200

200

140

200

140

140

200

90

90

140

140

90

140

330

5,820

188

11,560

Jan.

230

200

295

365

140

90

11?

*140

90

140

140

140 

115

115

115

140

115

140

90

470

330

295

230

200

170

140

170

140

170

140

115

5,485

177

10,880

Feb.

30soso

30

620

580

700

295

260

295

230

2,220 

1,850 

365

295

5,670

2,480

1,520

1,280

1,100

1,470

2,150

9,150

»8,400

14,700

*6,710

*7,580

*3,610

2,920

76,590

2,641

151,900

Mar.

2,090

2,220

2,690

2,550

3,610

1,850

2,410

5,340

2,480

5,340

3,260

2,410 

2,150 

1,970

2,220

2,090

2,920

5,450

8,100

9,750

6,010

4,190

4,090

3,610

2,920

2,620

2,620

4,390

7,950

4,910

3,700

117,910

3,804

233,900

Apr.

3,260

3,000

2,480

2,220

2,620

2,550

2,920

2,760

3,610

3,890

4,800

4,390 

5,900 

6,350

6,850

3,890

3,170

3,520

5,120

3,520

2,840

3,080

2,340

2,150

2,690

3,430

2,480

2,280

2,220

2,410

102,720

3,424

203,700

May

2,810

2,750

2,810

3,270

4,070

4,070

5,360

5,360

6,100

6,920

7,380

7,860 

7,860 

6,700

6,700

6,200

6,200

6,300

4,660

4,490

5,450

6,920

7,140

6,920

6,700

3,920

3,920

4,570

4,830

4,920

4,570

167,730

5,411

332,700

June

4,000

4,150

5,450

5,180

5,360

5,540

5,630

3,850

4,000

*4,070

4,000

4,070 

4,150 

4,230

4,000

3,780

3,550

3,480

3,010

3,140

3,410

3,010

2,750

2,550

2,100

2,100

2,050

1,800

1,900

1,900

108,210

3,607

214,600

July

1,850

1,600

1,550

1,300

1,100

1,200

1,500

1,300

1,100

1,200

900

780 

780 

660

580

500

310

210

*310

380

420

700

380

310

380

270

240

240

120

42

ISO

22,392

722

44,390

Aug.

150

120

210

180

240

345

120

180

150

210

180

210 

TS" 15

15

*70

15

25

70

25

42

95

70

70

95

42

95

70

42

180

95

3,441

111

6,825

Sept.

150

180

180

95

120

95

42

95

95

95

120

95 

42 

120

70

150

150

120

120

42

95

95

210

345

460

860

380

150

70

95

4,936

165

9,818

Water year 1903-4: Max 14,700 Min 15 Mean 1,774 Ac-ft 1,282,000

Calendar year 1904; Max 14,700 Min 15 Mean 1,777 Ac-ft 1,290,000

Discharge measurement made on this day.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19 

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

541

344 

464

565

585

544

512

503

498

543

478

699

501

529

590

364

489

528 

532 

727

468

583

447

533 

533

493

495

568

622

727

162

16,467

531

32,660

Nov.

367

4"85 

538

523

614

504

609

585

*543

560

468

534

533

595

555

508

683

6TT 

594 

551

545

626

621

487 

586

565

510

580

539

562

16,581

553

32,890

Dec.

629

584 

600

676

454

847

804

690

707

687

559

641

498

607

516

535

644

324 

* 1,110" 

1,650

1,320

9,420

21,700

4^300

5,540

4,840

3,370

2,760

2,400

2 350

81,962

2,644

162,600

Jan.

2,150

2,240 

2,000

2,270

2,930

2,620

2,400

2,370

2,260

2,090

2,070

1,710

1,730

2,400

4,570

5,550

3,450

2,800 

2,570 

2,520

2,510

2,680

4,420

3,240 

3,720

4,580

4,460

3,480

3,090

2,750

2,360

89,990

2,903

178,500

Feb.

*2,520

2,160 

2,020

2,060

1,930

1,910

1,850

1,790

1,780

1,640

1,550

1,710

1,700

1,630

1,550

1,520

1,500

1,500 

1,420 

1,530

1,450

1,500

2,040

1,590 

1,660

1,590

1,590

1,470

1,530

- - - - - _

49,490

1,707

98,160

Mar.

*1,590

1,580 

1,570

1,520

1,540

1,560

1,530

1,490

1,580

1,510

1,420

1,500

1,550

1,440

1,570

1,550

1,430

1,490 

1,560 

1,510

1,510

1,570

1,550

1,670 

1,640

1,650

1,600

1,510

1,610

1,580

1 , 600

47,760

1,541

94,750

Apr.

1,580

1,580 

*1,490

1,450

1,450

1,490

1,520

1,440

1,550

1,540

1,590

1,570

1,600

1,500

1,470

1,530

1,530

1,510 

1,400 

1,560

1,610

1,510

1,500

1,950 

2,030

2,050

1,740

2,150

1,890

1,990

48,750

1,625

96,690

May

*2,090

2,060 

2,090

3,450

2,860

2,560

2,740

2,680

2,790

2,760

2,690

2,580

2,490

2,440

2,350

1,980

1,890

1,820 

1,820 

1,820

2,120

3,880

6,850

6,000 

4,700

4,120

4,330

3,740

3,820

4,070

4,850

96,440

5,111

191,300

June

4,770

4,360 

4,650

5,020

5,710

5,220

5,090

*5,190

4,150

4,190

4,520

3,730

3,940

3,650

3,590

2,860

2,520

2,990 

5,670 

2,570

2,500

2,590

3,040

2,710 

2,530

2,380

2,310

2,570

2,330

2.020

98,770

3,292

195,900

July

1,530

*1,690 

1,200

1,300

1,200

1,200

1,100

900

1,100

1,150

950

850

850

700

550

600

600

600 

600 

600

600

'goo 250

600 

800

500

650

550

600

600

550

25,570

818

50,520

Aug.

*550

550 

642

605

523

574

647

678

543

588

656

546

522

639

590

576

594

560 

445 

689

534

670

558

524

558

535

599

612

678

494

575

18,054

582

35,810

Sept.

606

569 

549

559

567

*538

546

556

576

576

559

567

587

529

554

548

510

591 

583 

597

591

547

505

530 

545

562

578

534

612

541

16,812

560

33,350

Calendar year 1955: Max 21,700 Min 160 Mean 753 Ac-ft 545,300

Water year 1955-56: Max 21,700 Min 250 Mean 1,657 Ac-ft 1,203,000

* Discharge measurement made on this day.

Note. No gage-height record July 3 to Aug. 1; discharge estimated on basis of records of computed 

inflow into Fardee Reservoir.
SAN JOAQUIN RIVER BASIN 359

Mokelumne River at Lancha Plana, Calif.

Location. Lat 38°13'25", long 120°53 I 20", in Slrf£ sec. 4, T. 4 N., R. 10 E., on left bank

 1 mile east of Lancha Plana, 3 miles downstream from Pardee Dam, and 5 miles upstream 

from Camanche Creek.

Drainage area.--584 sq mi.

Records available.--June 1926 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 158.95 ft above mean sea level (levels by 

"Tlast Bay Municipal Utility District).

Average discharge.--27 years (1929-56), since start of East Bay aqueduct diversion, 866 cfs 

(627,000 acre-ft per year).

Extremes.--Maximum discharge during year, 25,500 cfs Dec. 23 (gage height, 19.15 ft); minimum daily, 164 cfs Oct. 1.

1926-56: Maximum discharge, 26,700 cfs Nov. 21, 1950 (gage height, 20.1 ft); minimum daily, 7 cfs Nov. 21, 1929.

Remarks.--Records excellent. Flow regulated by Pardee Reservoir beginning Mar. 9, 1929

 (usable capacity, 193,100 acre-ft), Salt Springs Reservoir beginning March 1931 (see 

p, 350), several smaller reservoirs, and four powerplants. Of several diversions above 

station, East Bay Municipal Utility District aqueduct is largest not returned to river. 

Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 1215: 1928(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 23, 24, Jan. 14, 15)

2.1

3.0 

3.6 

4..6 

6.0

160

370

610

1,230

2,500

9.0

12.0

15.0

18.0

5,790

10,300

16,000

22,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13 

14

15

16 

17

18

19

20

21

22

23 

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

164 

TO? 

463

*461

466

480

466

217

213

470

467

467

457 

456

216

209 

456

464

475

469

468

218

218 

461

451

290 

329

329

329

329

11,494

371

22,800

Nov.

332 

»329 

329

329

329

329

329

329

329

329

329

329

321 

S3T

5ST

332 

334

332

332

332

*332

332

332 

332

332

329 

332

332

329

329

9,911

330

19,660

Dec.

334 

332

332

332

332

334

362

362

362

36.2

362

350

337 

333

342

342 

342

345

353

345

345

1,600

19,100 

*14,900

6,200

5,200 

6,000

4,900

4,400

3,700

3,400

76,640

2,472

152,000

Jan.

3,000 

*2,400 

1,900

3,600

4,900

4,200

3,000

2,900

2,400

2,400

2,300

1,800

1,600 

2,840

4,330

4,970 

4,950

*4,940

4,880

3,030

2,460

2,530

4,670 

F 3,940

3,450

3,890 

3,900

3,880

3,860

3,300

2,820

105,040

3,388

208,300

Feb.

*2,470 

2,140 

1,950

1,950

1,950

1,950

1,760

1,740

1,740

1,680

1,360

1,320

1,510 

1,510

1,510

1,510 

1,520

1,510

1,520

1,520

1,440

1,530

1.240 

1.S66

1,530

1,530 

1,520

1,520

1,520

47,470

1,637

94,160

Mar.

1,520 

1,820 

1,520

1,520

1,520

1,520

1,380

1,520

1,170

1,520

1,450

»1,140

1,210 

1,130

1,110

1,520 

1,520

1,520

1,520

1,440

1,310

1,310

1,350 

1,520

1,520

1,400 

1,370

1,310

1,300

1,410

1,520

43,590

1,406

86,450

Apr.

1,510 

1,310 

1,310

1,260

1,290

1.230

1,290

1,290

1,290

1,560

1,650

1,520

1,670 

1,610

1,460

1,310 

1,480

1,400

1,320

1,250

1,480

1,310

1,330 

1,490

1,900

2,110 

2,046

1,590

2,010

1,640

44,930

1,498

89,120

May

1,770 

*2,050 

1,930

2,810

3,030

3,020

3,010

2,270

3,000

3,000

3,000

3,000

2,990 

2,190

2,250

2,220 

2,240

2,180

2,930

2,930

2,130

2,460

2,680 

3,060

4,010

4,950 

4,890

4,460

3,600

3,520

4,030

91,610

2,955

181,700

June

4.520 

3,810 

3,980

4,240

3,800

2,720

2,680

2,680

3,420

3,380

*2,690

2,500

2,380 

2,360

2,500

2,280 

2,180

2,180

2,400

2,380

1,510

1,480

2,510 

2,220

1,860

1,660 

1,790

2,300

2,310

1,680

77,600

2,587

153,900

July

1,200 

1,570 

1,180

1,030

*890

684

902

824

824

872

824

759

737 

732

752

752 

752

752

732

732

732

732

752 

752

732

732 

732

752

726

726

720

25,448

821

50,460

Aug.

550 

525 

688

54T

541

515

518

457

553

518

517

517

517 

517

553

561 

550

549

549

549

553

553

554 

554

558

553 

554

536

535

555

546

16,791

542

33,300

Sept.

552 

552 

553

553

553

553

553

553

553

566

*567

568

571 

567

575

568 

567

569

577 5^6"

566

546

561 

549

564

562 

562

556

567

549

16,798

560

33,320

Calendar year 1955: Max 19,100 Mln 59 Mean 551 Ac-ft 398,900

Water year 1955-56: Max 19,100 Mln 164 Mean 1,550 Ac-ft 1,125,000

* Discharge measurement made on this day.

Note. No gage-height record Dec. 22, Dec. 25 to Jan. 13; discharge estimated on basis of release 

and spill at Pardee Reservoir.
360 SAN JOAQUIN RIVER BASIN 

Mokelumne River near Clements, Calif.

Location. Lat 38°12'25", long 121°05'20", in NW^ sec. 15, T. 4 N., R. 8 E., on left bank 

700 ft upstream from highway bridge, 1 mile north of'Clements, and 4 miles (revised) 

downstream from Murphy Creek.

Drainage area. 630 sq mi.

Records available. October 1904 to September 1951 and July 1955 to September 1956 in 

reports of Geological Survey. 1951-55 in reports of California Division of Water 

Resources.

Gage. Water-stage recorder. Datum of gage is 67.16 ft above mean sea level (levels by 

East Bay Municipal Utility District). Oct. 28, 1904, to Apr. 18, 1926, staff gage at 

bridge 700 ft downstream at datum 1.93 ft higher, Apr. 19, 1926, to Dec. 21, 1930, 

water-stage recorder 75 ft downstream from bridge at datum 0.07 ft lower.

Average discharge.--24 years (1904-28), 1,111 cfs (804,300 acre-ft per year), revised; 

23 years (1939-51, 1955-56), 874 cfs (632,700 acre-ft per year). Storage and diversion 

by East Bay Municipal Utility District began March 1929.

Extremes.--Maximum discharge during year, 27,300 cfs Dec. 24 (gage height, 23.85 ft); 

minimum daily, 161 cfs Oct. 2.

1904-51; 1955-56: Maximum discharge, 28,800 cfs Nov. 21, 1950 (gage height, 24.40 

ft); no flow July 9, Aug. 15, 20-23, 1924.

Revisions.--Figures of maximum discharge for the water years 1917 and 1925 have 

been revised to 9,300 cfs June 10, 1917 (gage height, 12.6 ft) and 18,500 cfs Feb. 6, 

1925 (gage height, 18.6 ft), superseding figures published in WSP 461 and 611, 

respectively.

Remarks. Records good. Concerning regulation and diversions, see Remarks for Mokelumne 

River at Lancha Plana; between Clements and Lancha Plana are 'Several small diversions 

for irrigation,

Revisions (water years).--WSP 751: Drainage area. WSP 881: 1905-9 (yearly summaries 

only).Revised figures of discharge, in cubic feet per second, for periods in the 

water year 1911, superseding those published in WSP 311, are given herewith:

1911 

Feb. 2 1,100

1,030

1,000

1,000

1,000

1,000

1,000

1,000

1911-Con.

Mar. 16......... 2,200

17......... 2,200

18......... 2,200

19......... 2,300

20......... 2,300

21......... 2,300

22......... 2,400

Month

Calendar year 1911 ..................

Maximum

16,700

Minimum

1,000

75

Mean

3,160

2,080

2,070

Runoff in 

acre-feet

1,490,000
SAN JOAQUIN RIVER BASIN 

Mokelumne River near Clements, Calif.--Continued

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

361

second) 

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.8 

2.0

158

192

3.0 

5.0

445

1,160

Note.--Same as following table a" - - - above 5.0 ft.

2.9

3.0 

5.0 

8.0

370

400

1,160

2,730

11.0 4,390

14.0 7,080

18.0 13,500

22.0 22,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Cay

1 

2 

3

4

5

6

7

8

9

10

11

12 

13

14

15

16 

17

18

19

20

21

22 

23

24

25

26

27 

28

29

30

31

Total

Moan

Ac-ft

Oct.

290 

iSi. 

368

*463

466

466

477

?92

212

385

469

457 

453 

456

294

212 

372

451

466

471

456

296 

214

377

442

369

335 

335

335

332

335

11,507

371

22,820

Nov.

*33S" 335 

338

338

338

335

335

338

338

338

338

340 

345 

345

348

348 

348

345

345

345

*348

m350

350

350

348 

350

348

348

10, 310

344

20,450

Dec.

362 

350 

350

350

355

362

378

391

397

385

385

378 

358 

352

365

362 

368

368

421

409

375

902 

16,100

*20.600 l,il(>

5,300

6,090 

*4,960

4,530

3,850

*3,510

80,833

2,608

160,300

Jan.

3,300 

2,640 

2,020

2,920

5,100

4,750

3,120

3,110

2,540

2,420

2,360

1,960 

1.610 

2,690

4,540

5,390 

*5,110

5,070

5,000

3,680

2,550

2,560 

4,210

4,460

3,660

3,980

4,080 

4,000

3,970

3,590

3,000

109,390

3,529

217,000

Feb.

*2.460 

2,250 

1,940

1,940

1,940

1,930

1,810

1,710

1,710

1,690

1,420

1.250 

1,460 

1,460

1,460

1,460 

1,460

1,460

1,470

1,470

1,400

1,500 

1,290

1,520

1,500

1,520

1,480 

1,480

1,500

46,940

1,619

93,100

Mar.

1,480 

1,480 

1,480

1,470

1,470

1,460

1,360

1,440

1,150

1,430

1,390

1,060 

1,130 

1,090

1.020

1,400 

1,440

1,440

1,440

*1,380

1,240

1,240 

1,250

1,430

-1,440

1,330

1,320 

1,230

1,200

1,320

1,420

41,430

1,336

82,180

Apr.

1,430 

1,250 

1,230

1,150

1,180

1,230

1,200

1,210

1.120

1,460

1,560

1,540 

1,510 

1,580

1,520

1,160 

1,420

1,340

1,330

1,140

1,410

1,250 

1,240

1,320

1,880

2,060

2.130 

1,440

2,010

1,490

42,790

1,426

84,870

May

1.750 

2,060 

*1,780

2,640

2,970

2,980

2,970

2,280

2,930

2,970

2,960

2,960 

2,950 

2,200

2,170

2,200 

2,200

2,180

2,830

2,860

2,120

2,360 

2,570

2,890

3,790

4,970

4.990 

4,730

3,720

3,490

3,910

90,380

2,915

179,300

June

4.410 

3,870 

4,000

4,180

4,060

2,740

2,560

2,560

2,730

2,870

2,570

*2,470 

2,150 

2,330

2,090

2,230 

2,060

2,050

2,170

2,390

1,370

1.500 

2J060

2,200

1,840

1,570

1,600 

2,180

2,190

1,660

74,460

2,482

147,700

July

1.300 

1,210 

1,230

888

940

832

856

796

764

820

*800

732 

700 

692

688

680 

680

684

680

680

680

684 

680

680

676

680

680 

680

680

676

625

24,121

778

47,840

Aug.

520 

429 

670

481

467

486

*438

391

445

449

444

456 

441 

445

447

487 

495

488

492

484

484

492 

485

491

487

500

490 

491

470

463

_ 471

14,777

477

29,510

Sept.

470 

485 

490

490

492

485

.488

490

491

492

*490

493 

516 

517

494

514 

501

501

520

507

504

490 

500

496

482

497

497 

490

491

497

14,870

496

29,490

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 20,600 Mln 161 Mean 1,535 Ac-ft 1,114,000

Discharge measurement made on this day.
362 SAN JOAQUIN RIVER BASIN

Woodbrldge Canal at Woodbrldge, Calif.

Location. Lat 38°09'10", long I21°18'00", In SE£ sec. 34, T. 4 N., R. 6 E., on right bank 

at Woodbrldge at point of diversion.

Records available. April 1926 to September 1956.

Gage. Differential water-stage recorder and gate-opening recorder. Datum of gage Is 

52.18 ft above mean sea level (levels by East Bay Municipal Utility District). Prior 

to Mar. 15, 1931, water-stage recorder 0.2 mile downstream at different datum.

Average discharge.--30 years, 135 cfs (97,740 acre-ft per year).

Extremes .--1926-56 ; 

of each year.

Maximum dally discharge, 482 cfs July 8, 1953; no flow during part

Remarks. Records good except those for Mar. 22 to Apr. 17, which are fair. Discharge 

computed from records of gate openings and effective head as shown by recorders. Canal 

diverts from Woodbrldge Reservoir on Mokelumne River In sec. 34, T. 4 N., R. 6 E., for 

Irrigation of lands south and west of Woodbrldge.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

202

TBT

136 

179

*189

191

193

191

164

156

176

179

171 

161

159

136

128

146

153

154

150

154

131

119

135

*134

129

131

127

135

128

4,791

155

9,500

NOV.

130

125

130 

132

134

132

139

136

151

T3T

124

128

108 

56

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1,764

58.8

3,500

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Jfer.

0

TJ

0 

0

0

0

0

0

0

0

0

0

0 

0

0

0

0-o

0

*0

0

g82

g!46

g!58

g!76

»g216

g252

K258

g23?

g236

g219

1,979

63.8

3,930

Apr.

g219

g211

g228 

g236

g251

g228

g228

g219

g258

g295

g202

gl!9

glOO giro

glOO

glOO

»glOO

141

169

195

207

207

257

286

286

207

173

138

146

129

5,735

191

11,380

May

167

172

*195 

164

148

136

134 in

192

192

192

201

206 

254

282

319

324

zSS

293

285

302

320

314

311

295

307

310

301

299

315

317

7,696

248

15,260

June

313

307

m314

332

319

322

339

337

355

»364

360 

392

396

402

380

390

397

410

399

405

404

404

430

430

438

*431

429

415

11,177

373

22,170

July

411

410

418 

399

427

420

420

408

408

416

413 *405

408 

408

397

404

411

420

414

410

410

410

408

402

405

417

415

407

381

353

385

12,650

408

25,090

Aug.

372

364

360 

360

350

*350

347

355

350

350

347

353

367 

367

361

369

364

348

355

363

378

375

373

367

367

373

374

366

365

358

348

11,191

361

22,200

Sept.

542

332

325 

322

328

331

340

324

304

»291

284

269

274 

266

254

260

257

239

213

183

175

162

123

T25

167

179

179

179

189

202

7,442

248

14,760

Calendar year 1955: Max 352 Mln 0 Mean 129 Ac-ft 93,100

Water year 1955-56: Max 438 Min 0 Mean 176 Ac-ft 127,800

* Discharge measurement or observation of no flow made on this day. 

g Computed from twice-daily gage readings.
SAN JOAQUIN RIVER BASIN 363

Mokelumne River at Woodbridge, Calif.

Location.--Lat 38°09'30", long 121°18''lO", in NE£ sec. 34, T. 4 N., R. 6 E., on left bank 

at Woodbridge, 0.3 mile downstream from county highway bridge and 0.4 mile downstream 

from dam and canal intake of Woodbridge Irrigation District.

Drainage area.--644 sq mi.

Records available.--May 1924 to September 1956 (for 1924-25, low-water records only).

Gage. Water-stage recorder. Datum of gage is 14.9 ft above mean sea level (levels by 

East Bay Municipal Utility District). May 1924 to July 1928, about 100 ft downstream 

from bridge at datum about 4 ft higher; July 1928 to March 1931, 400 ft downstream from 

bridge at about same datum.

Average discharge.--27 years (1929-56), since start of diversion through East Bay Municipal Utility District aqueduct, 687 cfs (497,000 acre-ft per year).

Extremes.--Maximum discharge during year, 23,000 cfs Dec. 24 (gage height, 29.00 ft), from 

rating curve extended above 6,000 cfs on basis of contracted-opening determination of 

peak flow; minimum daily, 25 cfs Oct. 3.

1924-56: Maximum discharge, 27,000 cfs Nov. 22, 1950 (gage height, 29.58 ft), from 

rating curve extended above 6,000 cfs on basis of contracted-opening determination of 

peak flow; minimum daily, 1.4 cfs Sept. 19, 20, 22, 1927.

Remarks. Records good. Concerning regulation and diversions see Remarks for Mokelumne 

River at Lancha Plana; between Woodbridge and Lancha Plana are many additional diversions for irrigation, including Woodbridge Canal (see preceding page). Records of 

chemical analyses and water temperatures for the water year 1956 are given in WSP 1453.

Cooperation. Eleven discharge measurements furnished by California Department of Water 

Resources.

Revisions. WSP 751: Drainage area.

Discharge, in oubio feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9 

1O

11

12

13

14

15

16

17

18

19

ZO

21

ZZ

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

199 

57

25

118

*182

190

206

204

66 

30

127

196

218

234

220

92

49

155

223

241

255

244

100

*61

163

*237

164

162

170

166

166

4,918

159

9,750

Nov.

168 

175

177

173

173

169

166

156

140 

154

170

187

287

331

472

650

390

336

324

320

*320

318

319

316

*314

313

310

309

307

306

8,250

275

16,360

Dec.

316 

324

313

312

313

322

322

349

356 

348

343

343

330

313

509

318

322

325

349

385

344

460

2,180

14.200

10,100

*5,940

5,250

5,380

4,880

4,420

*3,890

63,656

2,053

126,300

Jan.

3,430 

3,110

2,580

2,180

2,940

4,1OO

4,320

3,460

3,020 

2,620

2,470

2,320

1.970

2,020

2,910

3,950

*4,360

4,750

4.780

4,740

3,760

3,120

3,100

*3,790

4,060

3,730

3,810

3,890

3,860

3,830

3,500

106,480

3,435

211,200

Feb.

2^920 

*2,610

2,300

2,160

2,110

2,090

2,060

1,930

1,900 

1,890

1,810

1,580

1,590

1,660

1,650

1,640

1,630

1,640

1,640

1,630

1,620

1,580

1,650

1.450

1,600

1,620

*1,610

1,580

1,600 -

52,750

1,819

104,600

Mar.

1.600 

1,590

1,580

1,580

1,580

1,570

1,560

1,500

1,540 

1,320

1,540

1,450

1,270

1,260

1,190

1,240

1,500

1,530

1,520

*1,500

926

1,190

1,200

1,270

1,360

*1,320

1,160

1,110

1,100

1,140

1,220

42,416

1,368

84,130

Apr.

1,300 

1,260

1,080

1,080

1,090

1,030

934

1,060

973

1,160

1,400

1,500

1,380

1,520

1,470

1,230

1,280

1,290

1,230

1,050

1,160

1,210

1,020

1,080

1,430

1,620

*1.850

1,580

1,6OO

1,610

38,457

1,282

76,280

May

1.520 

1,600

*1,680

1,830

2,420

2,520

2,570

2,530

2,040 

2,510

2,550

2,560

2,560

2,460

1,900

1,870

1,850

1,860

1,960

2,350

2,250

1,830

2,020

2,210

2,550

3,170

4,140

4.200

*3,750

3,120

3,120

75,500

2,435

149,800

June

3,530 

5.800

3,500

3,550

3,750

3,270

2,440

2,280

2,230 

2,450

2,320

*2,200

1,940

1,950

1,790

1,640

1,700

1,690

1,680

1,890

1,650

900

1,430

1,740

1,620

 1,300

1,240

*1,500

1,680

1,590

64,250

2,142

127,400

July

1.210 

642

1,010

643

677

478

468

470

380 

380

421

*383

308

295

309

295

282

255

261

261

266

286

288

*270

262

257

258

290

292

280

265

12,642

408

25,080

Aug.

220

112

97

155

111

100

*85

71

56 

59

60

62

71

62

58

58

86

128

117

101

80

83

84

83

88

94

95

*86

79

73

83

2,797

90.2

5,550

Sept.

102 

106

144

133

130

120

117

124

213 

*167

166

180

268

217

164

193

206

210

299

303

276

322

337

277

*251

252

247

251

240

252

6,267

209

12,430

Calendar year 1955: Max 14,200 Min 11 Mean 342 Ac-ft 247,500

Water year 1955-56: Max 14,200 Min 25 Mean 1,307 Ac-ft 948,900

* Discharge measurement made on this day.
364 SAN JOAQUIN RIVER BASIN

Dry Creek near Gait, Calif.

Location. Lat 38°14'48", long 121°13'03", in NE£ sec. 32, T. 5 N., R. 7 E., on right bank 

of main channel just downstream from county road bridge, 2 miles downstream from Coyote 

Creek and 4 miles east of Gait.

Drainage area. 325 sq mi.

fiasL cay municipal utility uistnct). uec. 4, iaao, to aept. JU, ibwci, at site <J ma

downstream at different datum. Oct. 1, 1944, to Sept. 30, 1945, at present site at

datum 3.00 ft higher. 

Average discharge. 18 years (1927-33. 1944-56), 105 cfs (76,020 acre-ft per year); median

of yearly mean discharges, 68 cfs (49,200 acre-ft per year). 

Extremes. Maximum discharge during year, 17,000 cfs Dec. 24 (gage height, 14.55 ft); no

flow for several months.

1926-33, 1944-56: Maximum discharge, that of Dec. 24, 1955; no flow for several

months each year. 

Remarks.--Records good except those for periods of no gage-height record, which are fair.

Many small diversions above station for irrigation. Total storage of many small

reservoirs about 1,000 acre-ft, and total number of acres irrigated approximately 500. 

Cooperation. Nine discharge measurements furnished by California Department of Water

Resources and two by U. S. Bureau of Reclamation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 20, 22}

Oct. 1 to Jan. 16 Jan. 16 to Sept. 30

2.9 

3.1 

3.5 

4.0

1.3

2.0

3.5

6.0

14

25

53

12

12.6

12.9

13.3

13.7

14.1

14.4

270

498

1,140

1,400

1,800

3,000

5,000

8,600

13,400

8.0

10.0

12.0

12.8

498

767

1,060

1,380

13.4

13.6

13.8

14.1

2,240 

2,700 

4,OOO 

8,400

Note. Same as preceding 

table below 8.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24 

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

a

(*)

0

0

0

Nov.

*0

0

0

.1

0

0

0

0

0

0

0

0

0

*0

*0

.2

.2

0

0

0

0

0

0

0 

*0

0

0

0

0 

0

0.5

0.02

1.0

Dec.

*0

3

0

0

0

0

0

0

*0

0

0

0

0

0

0

0 

0

0

22

*624

*270

*1,840

*12,800

*13.100 

3,89TJ

*2,800

4,600

1,660

865 

637

784

43,892

1,416

87,100

Jan.

692

984

697

508

2,430

4,260

1,400

2,060

1,020

799

787

577

467

1,640"

6,340

7.780 

*1,960

1,100

818

908

848

730

*2,140

*1,360 

1,440

1,480

2,140

1,400

941 

71B

591

51,015

1,546

101,200

Feb.

492

*414

358

315

288

264

238

220

202

189

180

173

164

156

147

138 

130

T35

130

167

188

162

*962

705 

424

575

415

337

482

8,750

302

17,360

Mar.

384

296

260

236

220

218

188

174

164

156

148

138

131

*126

119

114 

110

106

102

*101

98

96

89

86 

82

78

73

71

70 

68

.§1

4,369

141

8,670

Apr.

74

77

68

63

61

59

56

52

50

49

58

~98 106

93

97

79 

*73

65

59

53

50

47

43

39 

38.

53

*90

70

57 

50

1,927

64.2

3,820

May

45

40

g39

*g98

110

120

135

145

160

alii

155

140

125

110

95

80 

g68

60

55

45

*40

37

32

31 

26

24

16

13

*10 

8.8

S^±.

2,241.9

72.3

4,450

June

6.0

^7S

5.0

3.3

1.2

1.0

0

0

0

0

0

*0

0

0

0

0 

0

0

0

0

0

0

0

0 

0

*0

0

0

0 

0

22.3

0.74

44

July

(*)

(*)

(*)

0

0

0

Aug.

(*)

(*)

(*)

0

0

0

Sept.

(*)

(*)

0

0

0

Calendar year 1955: Max 13,100 Min 0 Mean 183- Ac-ft 132,800

Water Water year year 1955-56: 1955-56: Max Max 13,100 13,100 Min Min 0 0 Mean Mean 307 307 Ac-ft Ac-ft 222,600 222,600

Peak discharge (base. 800 efs). Dee. 24 (8 a.m.) 17,000 cfs (14.55 ft); Dec. 27 (4 a.m.) 5,600 

cfs (13-80 ft); Jan. 2 (9 a.m.) 1,110 cfs (11.84 ft); Jan. 6 (2 a.m.) 5,840 cfs (13.83 ft); Jan. 8 

(8 a.m.) 2,800 cfs (13.25 ft); Jan. 11 (2:30 a.m.) 910 cfs (10.80 ft); Jan. 16 (7 a.m.) 12,000 cfs 

(14.32 ft); Jan. 20 (7 p.m.) 1,100 cfs (12.20 ft); Jan. 23 (12 m.} 2,530 cfs (13.54 ft); Jan. 27 

(12 m.) 2,350 cfs (13.46 ft); Feb. 23 (3 p.m.) 1,360 cfs (12.78 ft).

* Discharge measurement or observation of no flow made on this day.

Note.--No gage-height record May 1, 2, 5-9, 11-16, 18-20; discharge interpolated or estimated on 

basis of 1 discharge measurement.

g Discharge computed from once-daily gage-height readings.
SAN JOAQUIN RIVER BASIN 365

Camp Creek near Camlno, Calif.

Location. Lat 38°41'35", long 120°32'35", in NE^ sec. 28, T. 10 N., R. 13 E., on right 

bank 3.6 miles upstream from Park Creek and 7.5 miles southeast of Camino.

Drainage area.--33.0 sq mi.

Records available.--October 1948 to September 1956 (discontinued).

Gage. Water-stage recorder. Altitude of gage is 3,120 ft (from topographic map).

Average discharge. 8 years, 53.1 cfs (38,440 acre-ft per year), unadjusted.

Extremes.--Maximum discharge during year, 3,260 cfs Dec. 23 (gage height, 6.24 ft), from 

rating curve extended above 1,350 cfs on basis of slope-area determination at gage 

height 5.65 ft; minimum, 1.1 cfs Dec. 15.

1948-56: Maximum discharge, that of Dec. 23, 1955; minimum, 1.0 cfs Dec. 26, 1954.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Diversion above station into Jenkinson Lake, on Park Creek, totaled 19,960 acre-ft 

during the year.

Revisions. WSP 1245: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Nov. 13-30, Dec. 2-8, 10-17)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.1

1.4

2.1

4.0

6.5

9.2

12

18

1.2 

1.5 

2.0 

2.5 

3.0 

4.0 

6.0

32

66

146

265

490

1,100

2,970

-0.25

-.2

-.1 

0.0 

.1 

.2 

.3 

.4

2.4 

2.9 .6 

.8 

1.0 

1.5 

2.0 

3.0 

4.0

18

24

40

63

139

254

600

1,150

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

(t)

Oct.

1.5

174" 1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.6

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.6

1.8

1.8

1.8

1.7

1.7

1.7

1.8

2.0

?7o

2.0

1.9

1 a 8

50.7

1.64

101

0

Nov.

1.8

1.9

1.9

1.9

1.9

1.9

1.9

2.0

1.9

1.9

1.9

2.0

2.8

3.8

2.0

2.8

4.0

3.4

3.2

3.4

4.8

270

*2.0

2.0

1.8

1.7

1.6

T76

1.6

1*6

69.0

2.30

137

90

Dec.

8.6

3.6

2.3

1.8

2.3

21

3.2

2.4

6.2

2.3

1.6

1.4

1.3

1.2

T72

1.2

2.0

10

25

70

10

300

2,000

400

150

200

100

40

15

*10

9

0

 0

3,403.4

110

6,750

4,062

Jan.

10

11

9.5

39 9.3

27

17

14

13

12

11

10

10

25

800

200

70

40

30

35

40

60

150

70

*450

525

250

150

100

75

3,347.8

108

6,640

3,159

Feb.

65

60

55

50

48

46

44

42

42

42

15

8

35

60

*55

51

55

50

48

47

46

54

77

55

53

51

44

43

43

1,388

47.9

2,750

252

Mar.

25

T.6

7.6

7.7

9.1

8.3

7.6

7.4

7.4

7.4

7.0

7.0

*6.7

6.5

6.3

6.2

6.0

5.8

5.6

5.4

5.2

5.1

4.8

4.7

4.7

4.6

4.4

4.4

4.3

4.2

4T8

208.8

6.74

414

4,515

Apr.

5.7

7.2

S78

6.2

5.7

5.6

5.1

4.8

*4.7

4.8

5.1

4.8

4.8

5.1

4.8

4.6

4.4

4.2

4.2

4.1

4.0

3.9

3.9

775- 3.8

5.4

4.3

4.0

3.9

3.9

143.7

4.79

285

5,277

May

4.4

4.3

20~ 4.0

21

30

31

147

240

211

212

200

181

160

148

145

145

147

145

150

156

166

168

152

139

128

119

104

98

93

89

3,760.7

121

7,460

2,605

June

84

7?

79

72

61

*53

50

48

47

44

41

36

33

31

30

25

21

19

18

16

14

13

12

11

9.8

8.7

7.9

6.7

3.1

2*8

976.0

32.5

1,940

0

July

2.7

2.7

2.7

2.7

2.6

2.6

2.5

2.5

575" 2.4

~9.3 10

9.8

9.5

9.3

8.9

8.7

8.5

8.3

7.9

7.9

7.6

7.4

7.2

7.0

7.0

6.8

6.7

6.5

6.5

196.0

6.32

389

0

Aug.

6.2

670

6.0

6.0

6.0

*6.0

5.8

5.7

5.6

5.4

5.4

5.2

5.2

5.1

5.1

5.1

5.1

5.1

5.0

4.8

4.7

4.6

4.4

4.4

4.4

4.3

4.4

4.3

4.3

4.2

4.1

157.9

5.09

313

0

Sept.

3.8

3.6

3.6

3.5

3.5

3.5

774" 3.4

3.5

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.7

3.7

4.4

4.8

4.4

4.2

4.2

4.1

3.9

3.8

3.8

3.7

3.7

3.7

111.7

3.72

222

0

Adjusted for diversion to Jenkinson Lake

Mean 

Ac-ft

1.64 

101

3.81 

227

Calendar year 1955: 

Water year 1955-56:

176 

10,810

159 

9,800

52.2 

3,000

80.2 

4,930

93.4 

5,560

164 

10,060

32.5 

1,940

Observed

Max 2,000 Min 1.2 Mean 12.9 Ac-ft 9,310 

Max 2,000 Mln 1.2 Mean 37.7" Ac-ft 27,400

6.32 

389

5.09 

313

3.72 

222

Adjusted

Mean 18.6 Ac-ft 13,460 

Mean 65.2 Ac-ft 47,350

* Discharge measurement made on this day.

t Diversion, in acre-feet, to Jenkinson Lake, furnished by Bureau of Reclamation. 

Hqte. No gage-height record Dec. 19-29, Jan. 15 to Feb. 14 j discharge estimated on basis of recorded range in stage, 2 discharge measurements, records for nearby streams, and observed diversions.
366 SAN JOAQUIN RIVER BASIN '

Camp Creek near Somerset, Calif.

Location. Lat 38°39'26", long 120°39'46", In Sw£ sec. 4, T. 9 N., R. 12 E., on right bank 

0.2 mile upstream from mouth, 1.3 miles northeast of town of Somerset, and 5.6 miles 

south of Camino.

Drainage area. 62.7 sq mi.

Records available. February to May 1924, October 1954 to September 1956. Published as 

"near Pleasant Valley" February to May 1924.

Gage. Water-stage recorder. Altitude of gage is 1,820 ft (from topographic map). Feb. I 

to May 31, 1924, staff gage at site about 0.2 mile upstream at different datum.

Extremes. Maximum discharge during year, 6,020 cfs Dec. 23 (gage height, 12.48 ft); minimum, 2.3 cfs Sept. 5, 6.

1924, 1954-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.7 cfs Aug. 14, 

1955.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Flow partly regulated by Jenkinson Lake (usable capacity, 40,570 acre-ft). Water is 

released from Jenkinson Lake through Camino conduit for irrigation and domestic supply 

in North Fork Cosumnes and South Fork American River basins.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

1.5

1.6 

1.8 

2.0 

2.2 

2.6 

3.0

3.5 

4.0 

5.0 

6.0 

7.0 

9.0 

12.0

145

23O

454

780

1,220

2,500

5,440

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3O

31

Total

Mean

Ao-ft

(t)

(*)

(tt)

Oct.

4.5

4.5

4.5

4.5

4.5

4.7

4.7

4.7

4.9

4.9

5.1

5.3

5.3

5.1

5.1

5.1

5.1

5.1

5.3

5.5

6.9

375

6.5

6.3

6.1

6.5

4.5

3.7 4"7¥

4.0 

4.0

157.8

5.09

313

129

33

-319

Nov.

4.4

4.7

3.2

475

4.7

4.5

4.9

4.5

3.5

4.5

4.4

3.5

6.3

8.3

5.9

4.9

9.0

7.3

6.9

6.3

-7.3 15

6.1

6.7

5.3

4.9

5.1

5.1

4.9

3.8

170.4

5.68

338

44

75

+ 243

Dec.

*13

14

8.5

6.5

5.7

*48

15

8.8

15

11

7.6

6.5

5.7

5.3

4.9

5.1

7.1

13

 86

178

26

1,940

»4,690

»3,530

524

715

533

*149

59

44

40

10,714.7

346

21,250

4.8

0

+14,394

Jan.

39

42

3535"

118

90

68

55

47

45

40

36

35

64

al,500

a600

a350

a250

a220

a230

a230

a300

a450

a320

a90O

al,100

a60O

a400

a3OO

a250

a225

8,994

290

17,840

0

0

+6,095

Feb.

a200

al80

al70

a!60

also

al40

al40

a!30

a!30

*a!20

121

124

137

142

124

116

116

117

114

151

116

123

212

T55

145

146

127

123

127

4,044

139

8,02O

32

0

-78

Mar.

114

106

m

127

165

145

131

124

122

126

130

126

118

122

118

114

122

130

138

142

142

145

152

160

173

ISO" 185

168

166

165

176

4,350

140

8,630

142

0

+149

Apr.

178

160

144

135

128

124

124

127

*128

137

154

148

134

135

127

121

117

114

TIT

118

124

130

134

141

151

194

155

163

151

142

4,177

139

8,280

144

0

-39

May

137

138

142

323

404

392

409

426

TTS

343

343

325

290

258

240

228

221

219

212

210

214

221

223

199

185

168

158

137

13O

126

123

7,56O

244

15,000

194

9

-168

June

116

TOT

99

89

74

*66

62

60

6O

58

55

51

47

44

45

38

38

34

35

36

36

35

35

32

31

29

27

18

11

6.7

1,474.7

49.2

2,930

349

569

-78

July

4.9

4.0

3.7

3.5

3.5

3.5

3.4

3.2

37T

4.5

12

14

15

16

T£

15

15

13

11

10

10

9.5

9.3

8.8

8.5

7.8

7.6

7.3

7.1

6.9

6.7

264.1

8.52

524

403

2,057

-2,147

Aug.

6.5

S75

6.3

6.5

6.5

6.3

6.1

6.1

5.7

5.5

5.3

5.1

5.1

5.1

4.9

4.9

*4.5

4.5

4.5

4.4

4.2

4.0

3.8

3.8

3.7

3.7

3.7

3.7

3.7

3.5 

575

'151.6

4.89

301

334

2,683

-3,111

Sept.

3.2

2.9

2.8

2.5

tt

2.9

4.5

4.5

4.5

4.5

4.5

4.4

4.0

4.0

4.0

4.0

4.2

4.5

5.9

7.5

6.7

6.5

7.3

6.5

5.3

4.9

4.9

4.5

4.5

4.4

137.1

4.57

272

249

1,529

-1,875

Adjusted for evaporation, diversion from, and change in contents in Jenkinson Lake

Mean

Ao-ft

2.54

156

11.8

7OO

Calendar year 1955:

Water year 1955-56:

580

35,650

389

23,940

139

7,970

145

8,92O

141

8,380

245

15,040

63.4

3,770

13.6

837

3.37

207

2.94

175

Observed Adjusted

Max 4,690 Min 1.2 Bean 36.2 Ac-ft 26.22O Mean 56.4 Ac-ft 4O,830

Max 4,690 Min 2.5 Mean 115 Ac-ft 83,700 Mean 146 Ac-ft 105,700

* Discharge measurement made on this day.

t Evaporation, in acre-feet, from Jenkinson Lake.

* Diversion, in acre-feet, from Jenkinson Lake.

tt Change in contents, in acre-feet, in Jenkinson Lake, furnished by U. S. Bureau of Reclamation, 

a No gage-height record; discharge estimated on basis of recorded range in stage, 1 discharge 

measurement, and records for Weber Creek near Salmon Palls.
SAN JOAQUIN RIVER BASIN 367

North Fork Coaumnes River near El Dorado, Calif.

Location. Lat 38°35i20", long 120°50'38", In SVfi sec. 35, T. 9 N., R. 10 E., on down-

 stream side of left abutment of county road bridge, 0.8 mile north of Nashville, 

2.6 miles upstream from mouth, and 6 miles south of El Dorado.

Drainage area.--202 sq mi.

Records available. August 1911 to December 1941, October 1948 to September 1956.

Oage. Water-stage recorder. Altitude of gage Is 840 ft (from topographic map). Prior to

 October 1933, staff gage at site about 1.5 miles upstream at different datum. October 

1933 to December 1941 water-stage recorder at site 1,000 ft upstream at different 

datum.

Average discharge. 38 years (1911-41, 1948-56), 209 cfs (151,300 acre-ft per year).

Extremes. Maximum discharge during year, 15,800 cfs Dec. 23 (gage height, 14.8 ft), from 

rating curve extended above 2,500 cfs on basis of slope-area determination of peak 

flow; minimum dally, 2.0 cfs Oct. 4.

1911-41, 1948-56: Maximum discharge, that of Dec. 23, 1955; no flow during part of 

1924, 1926, 1931, 1933-34.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Diversions above, station for irrigation.

Rating tables, water year 1955-58 (gage height, in feet, and discharge,

In cubic feet per second)

(Shlftlng-oontrol method used Oct. 1 to Dec. 7, Dec. 18-22, 

July 24 to Aug. 11, Sept. 25-30)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

1.0 

1.3 

1.7 

2.2 

3.0

1.3

3.0

6.0

18

36

71

152

4.0 

4.5 

5.0 

6.0 

7.0 

9.0 

11.0

292

380

550

1,080

1,810

4,240

7,500

1.5 

1.7 

2.0 

2.5 

3.0 

4.0 

5.0

6.0

12

25

57

107

246

460

5.5

6.0

7.0

9.0

11.0

13.0

630

870

1,600

4,100

7,500

11,700

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

3.7

3.5

2.7

272" 2.0

2.3

2.5

2.7

2.7

2.8

3.7

3.9

3.9

3.9

3.9

3.9

3.9

3.9

4.2

4.4

4.8

5.3

5.6 

5.6

5.3

5.6

6.1

S75

4.8

4.6

4.6

124.6

4.02

247

Nov.

5.1

BTT

5.6

5.6

5.1

6.1

6.4

6.6

6.9

*6.9

6.9

8.6

10

14

16

16

19

19

15

17

25

2T

13 

11

9.2

7.5

6.4

6.4

6.4

6.9

316.7

10.6

628

Dec.

11

20

15

13

172

183

78

76

91

61

47

43

39

*34

33

41

64

*514

983

475

5,940

* 10, OOP 

5,266

2,100

2,500

2,100

1,000

700

650

620

33,851

1,092

67,140

Jan.

600

600

480

450

1,600

1,000

750

750

560

500

*420

389

375

1,555"

2,640

5,470

2,U6

1,480

1,200

1,090

1,060

1,350

*2,570 

1,760

*1,990

2,410

2,240

1,570

1,280

1,040

915

39,679

1,280

78,700

Feb.

800

710

646

594

544

538

*478

449

404

389

364

338

351

345

326

304

296

35?

298

375

314

332

809 

*5TT

463

472

414

387

438

13,001

448

25,790

Mar.

387

351

353

360

424

394

356

345

332

328

330

326

312

310

304

302

33s

326

345

356

360

369

384 

404

429

452 4^2"

427

422

419

429

11,396

368

22,600

Apr.

440

394

*353

336

326

322

326

328

330

360

404

394

351

353

334

312

308

304 30"6~

318

336

347

369 

380

394

4"6"§ 505

416

387

369

10,868

362

21,560

May

353

351

367

673

956

926

944

932

910

820

810

775

700

614

562

527

508

493

484

472

478

478

490 

*472

427

394

382

338

318

308

300

17,562

567

34,830

June

289 srr

262

249

222

206

199

192

189

186

182

172

162

155

159

144

133

126

122

119

115

111

106 

105

102

97

94

85

76

li

4,696

157

9,310

July

58 *B7

51

48

46

43

41

40

39

35

35

41

38

38

37

37

36

35

31

30

28

27

26 

24

23

22

21

21

20" 20

20

1,065

34.4

2,110

Aug.

*T6" 20

18

18

18

17

16

16

16

15

14

14

14

14

13

13

13

12

12

12

12

11

11 

10

9.9

9.6

9.3 376"

9.3

9.6

9 3

413.6

13.3

820

Sept.

8.7

8.4

7.5

6.9

6.6

*6.3

6.0

S7T

9.3

10

10

12

13

13

13

14

13

14

16

18

22

2T

20

21

18

17

17

17

17

17

400.8

13.4

795

Calendar year 1955: Max 10,000 Mln 0.3 Mean 167 Ac-ft 121,100

Water year 1955-56: Max 10,000 Mln 2.0 Mean 364 Ac-ft 264,500

Peak discharge (base, 1,800 cfs).-

4,980 cfs (9.55 ft); Jan. 23 (2 a.m.

-Dec. 23 (time unknown) 15,800 cfs (14.8 ft); Jan. 15 (10 p.m.) 

3,050 cfs (8.25 ft); Jan. 26 (8 p.m.) 3,190 ofs (8.35 ft).

Discharge measurement made on this day. 

Note. No gage-height record Dec. 23 to Jan. 11; discharge estimated on basis of records for 

Consumnes River near Plymouth.
368 SAN JOAQUIN RIVER BASIN

Cosumnes River near Plymouth, Calif.

Location. Lat 38°32'20", long 120°51'45", in NW£ sec. 22, T. 8 N., R. 10 E., on right 

bank 1.8 miles downstream from confluence of Middle and North Forks and 4 miles north 

of Plymouth.

Drainage area. 429 sq mi.

Records available.--May 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 580 ft (from topographic map).

Average discharge.--S years, 539 cfs (390,200 aore-ft per year).

Extremes.--Maximum discharge during year, 33,500 cfs Dec. 23 (gage height, 20.96 ft), from 

rating curve extended above 6,500 cfs on basis of logarithmic extension and comparison 

with upstream and downstream peaks; minimum, 6,8 cfs Oct. 1.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, 4.1 cfs Sept. 10, 1955.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Some diversions above station for irrigation.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, in cubic feet per second)

2.1

2.2 

2.5 

3.0 

3.5 

4.0 

4.5 

5.0

5.8

7.8

15

34

66

114

200

320

6.0

7.0

8.0

9.0

12.0

15.0

19.0

1,160

1,820

2,750

7,000

13,300

25,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.0

T^O

.2

.4

.2

.0

.2 

.4

7.6

8.0

8.9

8.9

9.3

9.6

9.3

8.9

8.9

9.3

9.8

10

11

12

13 

13

13

13

14

14

12

11 

11

302.9

9.77

601

Nov.

11

10

10

12

11

11

12 

13

13

13

13

12

15

29

36

34

43

52

44

49

101

~69 126

55

49

40

40

38

38

38

1,037

34.6

2,060

Dec.

47

119

86

67

56

320

421 

180

172

200

137

110

102

93

*86

86

100

150

1,000

2,000

1,200

12,000

25.000 

13,000

5,000

6,000

5,000

2,500

1,700

*1,600

1,520

80,052

2,582

158,800

Jan.

1,380

1,460

1,150

1,080

3,860

2,440

1,800 

1,790

1,340

1,260

1,150

1,040

985

2,620

6,610

8.080

4,890

3,440

2,660

2,470

2,360

2,830

5,770 

3,950

4,640

5,650

5,530

3,910

3,020

2,470

2,130

93,765

3,025

186,000

Feb.

1,770

1,530

1,390

1,290

1,180

1,130

1,040 

975

900

860

820

770

770

750

*715

676

660

680

660

925

765

766

2.450 

1,250

1,080

1,140

915

895

1,000

29,732

1,025

58,970

Mar.

885

820

815

815

935

890

805 

780

755

740

735

725

700

700

684

680

692

715

760

780

785

810

840 

875

925

970

945

905

890

880

905

25,141

811

49,870

Apr.

910

830

755

705

684

684

692 

700

*710

770

855

855

750

760

710

672

664

656

660

680

710

750

790 

810

835

1.050

950

865

805

780

23,047

768

45,710

May

755

750

795

1,900

1,920

1,860

1.960 

1,840

1,810

1,680

1,650

1,570

1,400

1,240

1,130

1,070

1,040

1,020

1,000

1,000

1,020

1,040

1,060 

1,020

930

855

825

745

705

676

664

36,930

1,191

73,250

June

644

612

600

576

522

488

467 

452

446

437

431

407

386

371

380

341

311

293

280

272

258

245

234 

224

*212

200

194

176

160

142

10,761

359

21,340

July

129

124

118

112

106

101

97 

94

90

87

86

93

92

93

88

86

83

80

75

72

68

66

64 

60

55

53

53

53

50

49

47

2,524

81.4

5,010

Aug.

45

44

43

42

41

41

40 

39

38

36

36

33

34

33

32

32

32

32

32

32

30

29

28 

28

25

25

24

24

25

25

25

1,026

33.1

2,040

Sept.

24

22

22

20

21

18

19 

19

20

20

20

21

21

22

22

23

23

24

25

28

30

30

32 

30

28

*25

24

24

24

23

704

23.5

1,400

Calendar year 1955: Max 25,OOO Mln 4.5 Mean 413 Ac-ft 298,800

Water year 1955-56: Max 25,000 Mln 7.0 Mean 833 Ac-ft 605,100

Peak discharge (base, 1.900 cfs). Dec. 20 (time and discharge unknown); Dec. 23 (time unknown) 

33,500 cfs (20796 ft); Dec. 26 (time and discharge unknown); Jan. 5 (3:30 p.m.) 5,460 cfs (11.02 ft); 

Jan. 7 fll p.m.) 2,720 cfs (8.97 ft); Jan. 15 (8 p.m.) 12,300 cfs '(U. 60 ft): Jan. 23'(2'a.m;) 

6,780 cfs (11.86 ft); Jan. 26 (8 p.m.) 7,700 cfs (12.39 ft); Feb. 23 (4 a.m.) 3,920 cfs (9.95 ft)j 

May 4 (12 p.m.) 2,370 cfs (8.63 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 17-30, Sept. 10-25; discharge estimated on basis of recorded 

range in stage, 1 discharge measurement, high-water mark in well, and records for station at Michigan Bar.
SAN JOAQUIN RIVER BASIN 369

Cosumnes River at Michigan Bar, Calif.

Location. Lat 38°30'00", long 121°02'45", in SE^ sec. 36, T. 8 N., R. 8 E., on downstream side of midstream pier of highway bridge at Michigan Bar, 5.5 miles southwest of 

Latrobe and 12 miles downstream from confluence of North and Middle Porks.

Drainage area. 537 sq mi.

Records available.--October 1907 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 168.09 ft above mean sea level, datum of 

1929. Prior to July 10, 1930, staff gage at same site and datum.

Average discharge.--49 years, 490 cfs (354,700 acre-ft per year).

Extremes. Maximum discharge during year, 42,000 cfs Dec. 23 (gage height, 14.59 ft), from 

rating curve extended above 6,000 cfs on basis of comparison with upstream and downstream peaks and velocity-area studies; minimum, 5.1 cfs Oct. 6, 11.

1907-56: Maximum discharge, that of Dec. 23, 1955; no flow during-parts of many 

years.

Flood In March 1907 reached a stage of 16.3 ft.

Remarks. Records excellent except those above 20,000 cfs and those for periods of no 

gage-height record, which are fair. Numerous small diversions above station for irrigation and mining. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Revisions (water years). WSP 331: 1911-12. WSP 881: 1908-9 (yearly summaries only).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 30

1.7

1.8 

2.0 

2.2 

2.4 

2.7 

3.0 

3.5

5.f

12

27

48

76

134

216

420

4.0

4.5

5.0

6.0

7.0

10.0

13.0

750

1,270

1,940

S,790

6,720

18,900

33,400

2.2 

2.4 

2.7 

3.0 

3.5 

4.0

17

34

74

130

290

570

4.5

5.0 

6.0 

7.0 

9.0 

11.0

1,040

1,680

2,200

5,680

12,500

21,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

6.7

6.1

6.7

6.1

5^1

5.6

6.7

7.3

7.9

10

6.7

8.5

9.8

10

10

10

9.8

9.1

9.1

8.5

9.8

9.1

12

14

13

13

13

14

10

9.8

9.8

287.7

9.28

571

Nov.

9^8 

10

9.8

9.8

11

10

9.8

12

12

*13

13

15

a20

a35

a45

40

44

56

53

49

67

156

90

66

57

49

44

42

41

40

1,129.2

37.6

2,240

Dec.

46 

91

104

78

67

153

513

216

162

213

159

125

110

99

91

88

101

156

1,200

2,530

1,470

13,200

51.700

16,900

5,800

7,530

6,500

3,360

2,390

1,900

*1,820

98,872

3,189

196,100

Jan.

1,680 

1,850

1,430

1,330

4,810

3,040

2,120

2,240

1,680

1,580

1,460

1,280

1.190

3,140

7,560

8.590

*4,700

*3,280

2,670

2,520

2,420

2,770

*5,580

3,750

*4,130

5,130

5,300

3,710

2,960

2,500

2,200

98,580

3,180

195,500

Feb.

1,930 

1,720

1,590

1,460

1,340

1,260

*1,160

1,080

996

930

900

830

840

812

776

740

704

731

704

1,020

860

945

2.750

1,540

1,250

1,370

1,140

1,020

1,250 -

33,648

1,160

66,740

Mar.

*1.050 

963

920

910

1,020

996

890

850

821

803

794

776

758

740

722

713 722"

740

776

812

812

830

870

900

952

996

974

941

920

910

920

26,801

865

53,160

Apr.

963 

870

785

740

713

695

704

713

722

776

890

920

794

*803

776

722

704

686

686

704

740

767

812

830

860

1.170

1,110

941

860

812

24,268

809

48,130

May

785 

776

794

1,710

2.070

1,930

1,900

1,900

1,860

1,790

1,710

1,650

1,520

1,340

1,220

1,150

1,100

1,080

1,060

1,040

1,060

1,080

1,100

1,080

974

890

860

776

731

695

686

38,317

1,236

76,000

June

659. 

618

602

570

521

476

452

429

418

412

407

380

360

335

350

317

286

266

254

246

236

222

212

200

209

182

173

167

150

138

10,247

342

20,320

July

126 

Tl9

117

110

108

103

99

95

90

87

87

88

90

90

88

87

84

80

77

72

70

68

65

64

49

46

52

53

53

51

48

2,516

81.2

4,990

Aug.

48 

*45

45

45

44

43

42

42

40

38

37

35

35

34

34

33

32

31

20

32

31

30

30

29

28

27

25

25

25

26

26

1,067

34.4

2,120

Sept.

25 

24

23

22

*21

19

20

19

20

22

21

20

22

23

23

23

23

22

23

25

33

40

34

31

31

a30

a28

a26

326

a25

744

24.8

1,480

Calendar year 1955: Max 31,700 Mln 2.2 Mean 489 Ac-ft 354,400

Water year 1955-56: Max 31,700 Mln 5.6 Mean 919 Ac-ft 667,400

Peak discharge (base. 2.000 cfs). Dec. 20 (5 a.m.) 2.990 cfs (5.63 ft): Dec. 23 (6 o.m.) 42.000

cfs (14.59 ft); Dec. 26 (8 p.m.) 11,100 cfs (8.63 ft); Jan. 5 (4 p.m.) 6,840 cfs (7.38 ft); Jan. 8

(2 a.m.) 3,000 cfs (5.89 ft); Jan. 15 (9:30 p.m.) 13,900 cfs (9.38 ft); Jan. ?3 (3 a.m.) 6,680 cfs

(7.33 ft); Jan. 26 (11 p.m.) 7,350 cfs (7.54 ft); Feb. 23 (5 a.m.) 3,960 cfs (6.36 ft); May 5 fe a m !

2,300 cfs (5.44 ft). ' '

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for station near Plymouth.
370 SAN JOAQUIN RIVER BASIN 

Cosumnes River at McConnell, Calif.

reports

Location, Lat 38°21'29", long 121°20'34", in sec. 20, T. 6 N., R. 6 E., on downstream 

side of bridge on U. S. Highway 99, 0.2 mile south of McConnell, 1 mile downstream 

from Deer Creek, and 7 miles north of Gait.

Drainage area. 730 sq mi.

Records available.-- October 1943 to September 1956 in reports of Geological Survey. 

1931-40, 1941-42 (gage heights only during high-water periods) and 1942-56 in re 

of California Department of Water Resources.

Gage. --Water- stage recorder. Gage is set to datum of Corps of Engineers.

Average discharge . --13 years (1943-560, 568 cfs (411,200 acre-ft per year); median of 

yearly mean discharges, 430 cfs (310,000 acre-ft per year).

Extremes . --Maximum discharge during year, 54,000 cfs Dec. 23 (gage height, 46.26 ft), from 

rating curve extended above 36,000 cfs by logarithmic plotting; no flow during several 

months .

1943-56: Maximum discharge, that of Dec. 23, 1955; no flow during parts of each 

year.

Remarks. --Records good. Diversions for irrigation of about 2,100 acres between stations 

at Michigan Bar and at McConnell.

Cooperation . Twelve discharge measurements furnished by California Department of Water 

Resources .

Rating tables, water year 1955-56 (gage height, In feet, and discharge, in 

cubic feet per second)

Nov. 20 to Jan. 16 Jan. 17 to May 5 May 5 to Sept. 30

30.7

30.8

31.0

31.2

31.4

31.7

32.0

33.0

34.0

2

8

17

32

67

109

312

595

35.0

36.0

38.0

39.5

40.5

42.0

43.5

45.0

97O

1,440

2,630

4,020

5,980

11,100

20,600

36,000

33.3

34.0

35.0

36.0

38.0

39.0

41.2

660

1,000

1,560

3,190

3,700

4,580

8,100

30.4

30.5

30.7

31.0

31.5

32.0

33.0

34.0

35.0

36.5

0

8

26

56

124

222

505

885

1,410

2,440

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

( )

C)

0

0

0

Nov.

*0

7J

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

18

23

57

xpo

59

 43

36

29

26

23

20

-------

434

14.5

861

Dec.

*23

FT

71

71

54

53

330

310

*174

156

168

122

97

87

76

70

72

86

231

*2,460

2,330

3,790

34,100

*55.600

13] 800

*6,740

14, 700

*5,900

2,520

1,670

lj 680

127,568

4,115

253,000

Jan.

1,460

1,790

1,300

992

2,230

6,860

2,280

2,190

1,540

1,230

1,320

1,030

902

1 730

7^740

»14.5Q0

7)920

4,780

3,550

3,150

3,190

2,700

*5, 130

5,710

4,670

*5,710

7,850

5,380

3,860

3,090

2, 580

118,364

3,818

234,800

Feb.

2,220

*1, 960

1,760

1,600

1,470

1,360

1,250

1,160

1,070

980

935

873

842

819

788

729

692

688

729

960

873

*2,470

2.53,0

1,540

1,650

1,400

1,180

1,310

 

36, 506

1,259

72,410

Mar.

1.400

1,110

1,020

980

1,000

1,110

965

891

864

842

819

806

783

*752

747

?2"9" 729

747

770

824

828

837

864

891

940

990

1,O20

980

935

915

28,018

904

55,570

Apr.

970

920

824

752

708

688

692

704

712

738

855

960

860

SOI

810

734

*704

692

634" ego

716

760

79$

837

868

1,080

*1,290

l)540

935

868

24,678

823

48,950

May

824

796

792

*1,310

2.400

2,090

1,950

2,120

1,930

1,990

1,790

1,760

1,600

1,400

*1,230

1,120

1,060

1,040

1,030

1,000

1,010

1,020

1,060

1,040

966

876

804

768

684

648

^28

38,736

1,250

76,830

June

620

596

564

550

526

469

*442

424

412

397

391

376

*360

343

326

320

290

267

251

239

224

202

190

183

181

175

159

*150

132

124

9,883

329

19,600

July

"9~6~ 99

94

86

79

79

75

69

64

56

*52

49

52

60

59

*60

64

56

53

50

46

44

49

45

48

40

29

29

23

if

-Lb

1,734

55.9

3,440

Aug.

-5.Q 17

0

0

0

0

*0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

25.0

0.81

50

Sept.

(*)

0

0

0

Calendar year 1955: Max 35,6^0 Mln o Mean 601 Ac-ft 434,900

Water year 1955-56: Max 35,600 Mln 0 Mean 1,054 Ac-ft 765,500

Peak discharge (base, 3.600 cfs).--

cfs (43.16 ft); Jan. 6 (8:30 p.m.) 9,

Dec. 23 (8 p.m.) 54,000 cfs (46.26 ft); Dec. 27 (8 a.m.) 18,000 

540 cfs (41.61 ft); Jan. 16 (11:30 a.m.) 18.200 cfs (43.19 ft):

Jan. 23 (11:30 p.m.) 7,040 cfs (40.79 ft); Jan. 27 (12'm.) 8,810 cfs (41.42 ft);'peb. 23 (6 p.m.) " 

4,440 cfs (38.85 ft).

* Discharge measurement or observation of no flow made on this day.
SAN JOAQUIN RIVER BASIN 371

Contra Costa Canal near Oakley, Calif.

Location. Lat 37°59'45", long 121°42'00", in NEi sec. 25, T. 2 N., R. 2 E., at Pumping 

Plant No. 1, 0.7 mile east of Oakley and 2.6 miles northwest of Knightsen.

Records available. February 1950 to September 1956.

Gage. Recording flow meters on pumps. Prior to Jan. 1, 1953, water-stage recorder at 

site 3.2 miles downstream at datum 121.72 ft above mean sea level (levels by Bureau of 

Reclamation).

Average discharge.--6 years, 52.6 cfs (38,080 acre-ft per year).

Extremes. 1950-56: Maximum daily discharge, 128 cfs Sept. 14, 1956; minimum daily, 

 8.0" cfs Jan. 12, 1952.

Remarks. Water is diverted from Sacramento-San Joaquin Delta by way of Old River, Rock 

Slough, and a dredged channel. A series of 4 pumping plants lifts the water about 

115 ft into the canal. Water is used for municipal, agricultural, and industrial 

purposes. The canal is a part of the Central Valley project.

Cooperation.--Records of daily discharge furnished by Bureau of Reclamation and reviewed 

by Geological Survey.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

65

66

74

88

67

62

65

71 

65 

68

61

64

64

59

55

53

52 

53

54

53

54

58

54

51

54

52

51

50

53 

54

51

1,841

59.4

3,650

Nov.

51

52

57

59

61

62

62

62 

1

64

65

59

55

52

52

49 

45

49

48

48

48

42

43

43

42

42

44

44 

44

1,574

52.5

3,120

Dec.

42

41

41

41

39

40

53

46 

44 

42

44

41

43

45

46

45

45 

45

45

42

43

36

35

37

35

26.

30

34

35

41

35

1,257

40.5

2,490

Jan.

34

34

33

34

30

41

41

33 

32 

28

28

29

43

42

31

SI

29

31

38

15

45

28

28

28

28

28

32

34

29 

27

1,018

32.8

2,020

Feb.

31

39

43

43

35

34

34

36 

31 

33

32

27

27

27

27

30

53 

58.

29

27

49

27

30

40

32

27

29

33

32

995

34.3

1,970

Mar.

32

33

31

33

33

27

40

35 

35 

33

32

29

31

32

30

42

40 

32

35

40

43

42

*44

49

46

60

60

62

12 

46

43

1,245

40.2

2,470

Apr.

45

73

76

68

82.

59

50

50 

50 

51

55

47

54

50

46

43

If

59

64

60

56

57

63

51

48

48

45

44 

46

1,633

54.4

3,240

May

49

50

53

44

40

41

40

43 

46 

49

49

58

62

49

63

74

75 

77

77

67

63

60

*62

72

75

74

74

72

76 

72

1,891

61.0

3,750

June

77

8T

82

98

102

106

114

91 

93 

104

120

98

109

94

95

95

96 

90

89

89

88

88

94

96

91

96

106

98

99 

94

2,874

95.8

5,7OO

July

84

87

85

81

77

79

83

83 

79 

79

78

79

76

72

67

67

71 

74

74

75

73

68

72

99

100

96

94

89

2,461

79.4

4,880

Aug.

84

84

84

99

82

96

104

108 

109

106

99

96

99

96

90

93 

95

90

86

86

88

89

90

91

86

86

85

86

86

86

2,870

92.6

5,690

Sept.

85

85

84

84

91

89

89

90 

90 

90

91

114

117

128

119

105

105 

104

84

98

96

88

86

79

77

81

77

IS

81 

75

2,757

91.9

5,470

Calendar year 1955 : Max 123 Min 23 Mean 68.2 >Ao-ft 49,340

Water year 1955-56 : Max 128 Min 26 Mean 61.2 'Ao-ft 44,450

Discharge measurement made on this day.
372 SAN JOAQUIN RIVER BASIN

Marsh Creek near Byron, Calif.

Location. Lat 37°52'25", long 121°43'35", in Los Meganos Grant, on right bank 40 ft downstream from highway bridge on Marsh Creek road and 5.0 miles west of Byron, Contra 

Costa County.

Drainage area. 42.5 sq mi.

Records available . February 1953 to September 1956.

~Gage . Water-stage recorder. Datum of gage is 177.87 ft above mean sea level, datum of 

Extremes . --Maximum discharge during year, 3,800 cfs Dec. 23 (gage height, 12.98 ft), from 

rating curve extended above 320 cfs on basis of slope-area determination of peak flow; 

no flow during several months.

1953-56; Maximum discharge, that of Dec. 23, 1955; no flow for several months each 

year.

Remarks . Records good. No storage or diversion.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Jan. 14 to Feb. 22)

3.27

3.3

3.4

3.5

3.6

3.7

Oct. 1 to Dec. 23

0 3.8

.1 4.0

.4 4.2

.9 4.4

2.8 4.8

6.6 5.1

Dec. 23 to Sept. 30

72

154

224

2.07

2.1

2.2

2.3

2.4

2.5 

2.7 

2.9 

3.2

0

.1

.5

1.1

2.2

3.9

9.0

16

28

3.6

4.0 

4.5 

5.0 

6.0 

7.0 

8.0 

9.0

52

89

165

270

530

865

1,260

1,710

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

O

0

0

Dec.

0

O

0

0

O

*o

0

0

0

0

0

0

0

0

0

o

0

0

0

26

*15

207

*1,480 

*285

86

223

*111

64

44

36

33

2,610

84.2

5,180

Jan.

32

31

30

28

*31

25

39

52

33

37

31

27

25

139

*555

243

128

92

72

136

82

85

96 

88

333

307

301

187

126

102

84

3,377

109

6,700

Feb.

68

*58

51

46

43

39

35

32

30

29

28

27

26

25

24

23

24

22

55

71

38

68

~56 127 

52

44

36

33

37

------

1,220

42.1

2,420

Mar.

31

29

27

27

27

*24

22

22

21

21

19

19

19

17

16

15

15

15

14

14

13

13

14 

13

12

12

11

11

*9.3

9.0

9.9

541.2

17.5

1,070

Apr.

9.0

9.0

7.5

7.5

7.2

6.7

6.2

5.7

5.7

5.5

10

*11

7.5

8.4

7.5

6.7

5.9

5.2

3.5

3.2

2.8

370

3.2 

3.3

3.0

7.2

~5.5 12

4.3

4.3

187.5

6.25

372

May

3.7

3.7

*3.3

7.0

575

4.3

4.1

3.9

3.9

3.5

3.3

3.2

3.0

2.5

2.2

1.8

*1.6

1.5

1.0

.9

1.2

1.0

1.0 

1.5

.9

.8

.5

.6

75- .4

.5

72.8

2.35

144

June

^"8 0.8

.4

.3

.3

.4

.1

**.!

O

0

0

0

0

O

0

0

0

0

o

0

0

0

*0 

0

0

0

0

0

0

0

3.2

0.11

6.3

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 1,480 Mln 0 Mean 1O.1 Ac-ft 7,350

Water year 1955-56: Max 1,480 Mln O Mean 21.9 Ac-ft 15,900

Peak discharge (base, 200 cfs).--Dec. 23 (2:30 a.m.) 3,800 cfs (12.98 ft); Dec. 26 (ll:3O a.m.) 

58 cfs (5.37 ft); Jan. 15 (5:30 p.m.) 666 cfs (6.21 ft); Jan. 20 (10 a.m.) 239 cfs (4.64 ft); 

Jan. 25 (8 a.m.) 718 cfs (6.53 ft); Feb. 22 (9 p.m.) 275 cfs (4.97 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.
GOOSE LAKE BASIN 373

Drew Creek near Lakeview, Oreg.

Location. Lat 42 0 07'00", long 120°34'20", in NE£ sec. 10, T. 40 S., R. 18 E., on left 

bank 10 ft upstream from bridge to Drew Creek Forest Camp, If miles downstream from 

Willow Creek, 2^ miles downstream from Drew Creek Dam, and 12? miles southwest of 

Lakeview.

Drainage area.--211 sq mi.

Records available.--January 1909 to September 1921 and October 1925 to September 1956 in

 reports of Geological Survey. January 1909 to September 1941 in reports of State

Gage.--Water-stage recorder. Datum of gage is 4,827.0 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to May 31, 1909, staff gage at dam site. Nov. 20, 1909, 

to Feb. 28, 1910, staff gage 100 ft downstream from dam site. Mar. 1, 1910, to 

Dec. 12, 1911, staff gage and Dec. 13, 1911, to May 17, 1918, water-stage recorder, at 

old bridge 1 mile below dam. May 18, 1918, to 1921, water-stage recorder and 1921 to 

Oct. 26, 1941, staff gage, 300 ft above old bridge. Oct. 27, 1941, to June 21, 1942, 

staff gage and June 22, 1942, to July 3, 1953, water-stage recorder, at site a quarter 

of a mile upstream at datum 8.1 ft higher.

Average discharge. 28 years (1909-30, 1937-38, 1939-41, 1946-47, 1953-56), 69.3 cfs 

(50,170 acre-ft per year) including diversion by North Drew Canal.

Extremes. Maximum discharge during year, 1,020 cfs Apr. 23 (gage height, 5.07 ft); minimum, 0.6 cfs Oct. 4-9. *.,,., 1909-56: Maximum discharge, 3,000 cfs Mar. 1,2, 1910, from rating curve extended 

above 1,200 cfs; no flow at times.

Remarks. Records good except those for period of no gage-height record, which are poor.

 Flow regulated by Drew Creek Reservoir (capacity, 62,500 acre-ft). Diversions for 

irrigation of about 3,100 acres above station, and since March 1914, North Drew Canal 

has diverted water from Reservoir for irrigation of lands west of Lakeview.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, In

cubic feet per second) 

(Shifting-control method used Oct. 1 to Dec. 18)

Oct. 1 to Apr. 23 Apr. 24 to Sept. 30

1.1

1.2

1.3

1.4

0.3

.7

1.5

2.7

2.2

2.4

3.5 

4.0 

4.5 

5.1

2BO

455

670

1,040

1.6 6.7 3.0 145

1.7

1.8

1.9

2.0 

2.2 

2.5

7.0

14

23

34

57

95

2.7 

3.O 

3.5 

4.0 

4.5 

5.O

125 

180 

30O 

480 

69O 

970

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ftj

(t)

(*)

Oct.

fcf

.9

*-iJL

.6

.7

.6

.6

.7

.8

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.7

.8

.8

.8

.8

. 8 

.7

23.4

0.75

46

6.7

a!3,480

Nov.

0.9 

.9 

.9

.8

75

.9

.9

.9

.9

.9

.8

.8

.9

.9

.9

1.0

1.5

2.0

2.5

270

1.6

1.4

1.2

1.1

1.1

1.3

1.9

1.6

1.3

1.2

35.8

1.19

71

0

a!4,OOO

Dec.

1.3 

1.3 

1.3

1.2

T72

1.2

1.2

1.2

1.2

1.3

1.3

7.7

7.7

4.0

2.9

2.9

2.7

3.6

18

6O

79

~60 116

26

16

38

18

12

10

8 . 4 

8.0

514.6

16.6

1,020

0

45, 57O

Jan.

7.4 

6.7 

6.3

6.0

6.O

5.8

6.0

5.8

15

28

44

86

87

116

200

145

155

182

224

259

301

322

350

388

392

388

385

385

382

382 

427

5,693.0

184

11,290

O

a59, 7OO

Feb.

458 

455 

452

448

448

448

452

444

444

441

438

434

410

350

346

343

340

340

340

340

343

343

346

340

336

332

382

424

424

11,441

395

22,690

0

a47,600

Mar.

424

m424

424

416

416

420

*420

416

410

406

406

410

248

79

aS

93

104

103

100

108

117

123

117

106

93

98

125

251 

290

8,087

261

16,040

0

a54,6OO

Apr.

284 

284 

284

294

290

290

294

294

301

406

772

898

904

934

991

998

*952

9O4

916

928

952

952

977

940

880

85O

850

775

695

628

20,717

691

41,090

0

64,820

May

588 

54O 

*512

492

536

568

584

*568

540

516

532

512

484

456

338

188

194

186

178

182

186

166

134

14O

138

148

144

138

132

126

1ZB

10,274

331

20,38O

1,33O

63,890

June

124 

1O8

102

96

90

83

79

73

67

58

52

47

53

56

52

46

43

42

37

.33

42

59

57

62

67

77

86

86

85

2,075

69.2

4,120

3,990

a60, 500

July

81 

65 

53

53

53

50

47

49

50

55

*55

58

58

62

62

62

70

74

83

83

78

78

78

77

77

78

73

70

69

65 

63

2,029

65.5

4,020

4,960

a49,500

Aug.

64 

63 

63

61

61

59

56

50

43

36

43

42

*42

46

49

49

50

47

45

41

30

30

21

13

13

13

£2

23

*22

23 

32

1,252

40.4

2,480

4,430

39,400

Sept.

40 

34 

30

30

3O

37

26

25

25

25

26

25

8 .4

13

21

22

21

22

22

21

19

19

19

20

25

23

23

23

23

23

719.4

24. 0

1,430

1,930

35,580

Calendar year 1955: Max 116 Mln 0.6 Mean 18.2 Ac-ft 13,160

Water year 1955-56: Max 998 Mln 0.6 Mean 172 Ac-ft 124,700

* Discharge measurement made on this day. 

t Diversion in acre-feet, by North Drew C

records for Cottonwood

493801 O - 59 - 25
374 GOOSE LAKE BASIN

Cottonwood Creek near Lakeview, Oreg.

Location. Lat 42°14', long 120°30', in SW£ sec. 29, T. 38 S., R. 19 E., on right bank 

600 ft downstream from Cottonwood Creek Reservoir and 10 miles northwest of Lakeview.

Drainage area. 30 sq mi, approximately.

Records available.--November 1908 to September 1919 and October 1925 to September 1956, in 

reports of Geological Survey. November 1908 to September 1919 and October 1924 to September 1941 in reports of State Engineer.

Gage.--Water-stage recorder. Datum of gage is 5,006.93 ft above mean sea level (levels by 

Bureau of Reclamation). Prior to June 1, 1919, and Apr. 13, 1924, to June 3, 1932, 

staff gage at several sites at different datums. June 1 to Sept. 30, 1919, water-stage 

recorder at different site and datum.

Average discharge.--35 years (1909-19, 1984-35, 1938-42, 1946-56), 21.3 cfs (15,420 acreft per year).

Extremes. Maximum discharge during year, 266 cfs May 6 (gage height, 4.53 ft); minimum, 

0.2 cfs Aug. 30, 31 (gage height, 1.20 ft).

1908-19, 1924-56: Maximum discharge, between 500 and 1,000 cfs during period 

Apr. 26 to May 1, 1927, when natural flow, estimated as 170 cfs, was augmented by water 

escaping from reservoir through break in outlet conduit below control gate; no flow at 

times.

Remarks.--Records fair except those for periods of no gage-height record, which are poor. 

Since 1923 flow regulated by Cottonwood Creek Reservoir (capacity, 4,160 acre-ft) 

600 ft above station. Diversions for irrigation of about 270 acres above station.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

1.3 

1.5 

1.7 

2.0 

2.3

0.8 

2.1 

4.0 

8.2

2.6 

3.0 

3.5 

4.0

1.6 

1.8 

2.0 

2.3 

2.6

2.5 

4.7

7.5

3.0 52

3.5 103

4.0 175

4.5 260

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

is!

4.1

3.2

*2.0

1.8

1.6

1.6

1.6

1.5

T^

2.3

2.4

2.2

2.0

1.9

1.8

1.8

1.8

1.8

1.8

1.9

1.9

1.8

1.8

1.7

1.9

2.0

2.0

2.0

1.9

1.9

64.6

2.08

128

0

Nov.

2.0

1.8

2.2

2.3

2.2

2.1

2.0

1.9

1.9

2.0

1.5

1.0

.9

1.3

1.5

1.6

1.5

1.6

2.4

5.0

6.2

6.5

675

6.5

6.5

6.3

6.3

6.3

6.3

6.3

102.4

3.41

203

0

Dec.

6.3

6.2

6.0

5.8

5.5

5.1

4.7

4.7

4.6

4.5

4.4

575

6.2

6.6

6.9

7.1

7.1

7.1

7.5

8.0

10

100

200

205

200

200

140

100

70

50

35

1,424.3

45.9

2,830

2,300

Jan.

30

25

24

22

21

20

20

19

19

IB

18

18

18

18

18

63

89

88

88

88

87

87

87

87

87

87

86

86

84

152

1,753

56.5

3,480

a2 , 700

Feb.

132

132

132

132

132

132

132

130

130

129

127

119

92

80

80

80

80

80

80

80

80

79

77

77

77

77

77

77

77

2,909

100

5,770

a220

Mar.

77

76

73

68

65

55

50

45

40

35

30

25

22

20

17

19

22

26

29

32

22

15

16

17

18

19

19

20

20

20

42

1,054

34.0

2,090

1,780

Apr.

55

55

55

55

94

130

130

130

130

*130

152

162

172

178

178

160

140

133

133

134

138

139

140

148

164

192

210

198

190

168

4,193

140

8,320

3,570

May

105

63

*153

133

196

258

242

*222

210

200

190

180

175

170

165

160

155

150

150

145

140

140

135

135

130

130

125

125

120

120

120

4,752

153

9,430

4,480

June

120 *TT9

119

117

116

113

85

36

4?

60

77

76

75

74

74

74

88

102

83

71

71

54

48

48

50

55

65

62

62

67

2,307

76.9

4,580

a3,500

July

67

66

66

65

50

42

25

25

18

15

19

42

30

13

13

13

13

13

13

13

13

13

17

28

28

37

42

42

42

42

41

966

31.2

1,920

a2,000

Aug.

45

48- 48

48

47

46

37

32

32

29

24

24

*24

24

24

24

24

20

18

14

10

10

5.1

3.9

7.0

7.2

7.2

7.0

*7.2

2,8

772

706.6

22.8

1,400

607

Sept.

11

11

11

11

11

11

11

11

11

11

11

11

11

11

11

10

T5

10

10

10

12

19

19

18

18

18

18

18

18

18

391

13.0

776

232

Calendar year 1955: Max 200 Hin 0.1 Mean 12 4 Ac-ft 8,970

Water year 1955-56: Max 258 Min 0.9 Mean 56.3 Ac-ft 40,930

Discharge measurement made on this day.

t Month-end contents of Cottonwood Creek Reservoir in acre-feet.

a No gage-height record; contents interpolated.

Note. No gage-height record Dec. 19 to Jan. 11, Mar. 5-14, May 9 to June Ij discharge estimated 

on basis of records for Drew Creek near Lakeview, unpublished records for Thomas Creek above Barnes 

Spring near Lakeview and observer's notes of flow.
SACRAMENTO RIVER BASIN 375

Sacramento River at Delta, Calif.

Location. Lat 40 e 56'20", long 122 e 24'55", in NW£ sec. 35, T. 36 N., R. 5 W., on left bank 

0.2 mile downstream from Dog Creek, 0.6 mile southeast of Delta, and 2.8 miles south of 

Lamoine.

Drainage area.--427 sq mi.

Records available December 1944 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,075.00 ft above mean sea level (levels by 

Bureau of Reclamation).

Average discharge. 11 years (1945-56), 1,111 cfs (804,300 acre-ft per year).

Extremes. Maximum discharge during year, 37,000 ofs Dec. 22 (gage height, 19.50 ft), from 

rating curve extended above 19,000 cfs on basis of slope-area determination of peak 

flow; minimum, 174 cfs Oct. 3, 10.

1944-56: Maximum discharge, that of Dec. 22, 1955; minimum, 141 efs Sept. 3, 4, 5, 

1950.

Remarks. Records good. Small diversions above station for irrigation. Records of chemleal analyses and water temperatures for the water year 1956 are given in VJSP 1453.

Revisions (water years).--WSP 1395: 1951(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

3.8 

4.4 

5.0 

6.0

7.0

176

362

640

1,330

2,350

8.5

10

12

14

4,430

7,470

12,800

18,800

3.9 

4.5 

5.0

6.0 

7.0

205

410

655

1,340

2,400

8.5

10

13

17

4,710

8,010

16,900

29,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18 

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*178 

178

176 rrs

178

178

178

178

176

201

T9"8 209

194 

191

189

187

185

185 

187

189

187

187 

187

185

185

191

189

189

187

187 

187

5,774

186

11,450

Nov.

189 

194

194 

194

198

198

194

189

187

TeT

187

189

212 

209

198

223

220

274

1,250

2.490

1,270

612 

535

479

448

418

448

479

461

426

12,952

432

25,690

Dec.

435 

409

374 

376" 347

565

502

512

814

590

550

590

585 

*560

535

624

748

5,390 

11,800

9,800

17,600

*26.700 

15,400

*7,160

6,540

7,720

5,310

3,690

2,910

2,400

'

133,610

4,310

265,000

Jan.

2,000 

1,800

1.780 

3,6oO

3,540

6,660

11,200

6,180

3,980

3,980

4,660

*3,930

4,010 

5,780

*12.500

8,670

5,320

4,010 

3,400

3,320

3,120

3,580 

4,030

3,380

3,010

2,980

2,880

2,570

2,280

2,050

1 ;860

131,260

4,234

260,400

Feb.

1,700 

1,580

1,520 

1,430

1,390

1,340

1,310

1,280

1,240

1,220

1,200

1,220

1,220 

1,190

1,140

1,080

1,080

1.040 

1,120

2,540

* 14. 700

12,906 

7,510

4,440

3,480

2,800

2,410

2,250

2,190

79,550

2,743

157,800

Mar.

2,070 

2,040

2,140 

2,280

2,100

1,880

1,710

1,620

1,610

1,590

1,550

1,480

1,470

l,5oo

*1,500

1,510

1,620

1,770 

1,880

1,820

1,910

2,020 

2,160

2,400

2.650

2,570

2,220

2,020

1,990

2,070

2 000

59,130

1,907

117,300

Apr.

1,830 

1,700

1.590 

1,630

1,770

1,780

1,940

2,030

2,170

2,460

2,340

1,980

1,890 

1,930

2,000

1,910

2,050

2,150 

2,480

2,840

3,110

3,200 

5,360

3,280

2,700

2,400

2,090

2,000

2,020

2,050

66,670

2,222

152,200

May

2,210 

2,410

2,410 

2,540

2,560

2,440

2,520

2,050

1,960

2,090

2,020

1,750

1,620 

1,660

1,820

2,260

2,570

2,810 

5.010

5,616

2,860

2,870 

2,970

2,540

*2,350

2,170

1,960

1,790

1,840

2,020

1,950

70,820

2,285

140,500

June

1.790 

1,610

1,620 

1,510

1,280

1,170

1,170

1,200

1,250

1,260

1,140

1,060

1,040 

1,060

1,010

890

836

824 

1,020

878

794

740 

716

688

655

616

600

584

562

540

50,113

1,004

59,730

July

32~5~ 525 

515 

490

472

454

458

450

414

410

*430

418

406 

390

578

370

360

352 

346

342

358

332

321

318

314

307

310

304

296

290

282

11,877

383

25,560

Aug.

279 

279

282 

282

279

296 279"

276

282

272

268

268

265 

262

259

256

256

253 

253

247

247

250

£44

238

2W

241

241

241

238

238 

238

8,055

260

15,970

Sept.

235 

255

229 

252

225

226

226

229

229

252

232

235

232 

232

229

229

229

235 

265

268

250

244

241

 235

2E9

223

223

2E5

225

225

6,996

255

13,880

Calendar year 1955: Max 26,700 Min 158 Mean 902 Ac-ft 653,300

Water year 1955-56: Max 26,700 Min 176 Mean 1,685 Ao-ft !T,223,000

Peak discharge (base. 5.700 efs). Dee. 19 (3:30 p.m.) 15,200 cfs (12.80 ft)j Dee. 22 (2 a.m.) 

37,000 cfs (19.50 ft); Dee. 25 (10 p.m.) 8,480 cfs (10.18 ft); Jan. 7 (7 a.m.) 13,200 efs (11.80 ft)j 

Jan. 15 (2 p.m.) 14,800 cfs (12.32 ft); Feb. 21 (1 p.m.) 18,700 cfs (13.58 ft).

* Discharge measurement made on this day.
376 SACRAMENTO RIVER BASIH

South Pork Pit River near Likely, Calif.

Location. Lat 41°14', long 120 0 25', in NE£ sec. 11, T. 39 N., R. 13 E., on left bank 

1.3 miles downstream from West Valley Creek and 3.5 miles east of Likely.

Drainage area. 248 sq mi.

Records available. October 1928 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,580 ft (from topographic map). Prior 

Fo Oct. 1, 1931, at site 1,000 ft downstream at different datum.

Average discharge. 27 years (1929-56), 72.1 cfs (52,200 acre-ft per year).

Extremes. Maximum discharge during year, 506 cfs May 27 (gage height, 4.21 ft); minimum, 

IS cfs Oct. 1, 2, Nov. 2.

1928-56: Maximum discharge. 1,060 cfs Apr. 27, 1932 (gage height, 5.55 ft), from 

rating curve extended above 600 cfs; minimum, 0.2 cfs Feb. 3, 1941.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Plow regulated by West Valley Creek Reservoir beginning in May 1937 

(total capacity, 17,700 acre-ft). Diversions for irrigation of about 3,800 acres above 

station.

Revisions..--WSP 861: Drainage area.

Rating table, water year 1955-56, except periods of lee effect (gage 

height, In feet, and discharge In oublo feet per second)

1.7 

1.9 

2.2 

2.5

3.0 

3.5 

4.5

165

277

610

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

20

14

16

20

20

20

20

20

20

20

21

20

*20

20

20

18

16

17

18

19

21

21

22

22

21

M22

22

22

22

619

20.0

1,230

Nov.

22

22

24

24

27

24

23

22

22

23

23

22

28

25

27

32

35

32

30

35

45

55

45

40

35

30 

29

28

*27

27

883

29.4

1,750

Dec.

b27

b26

b24

b23

b22

b21

b2J

b28

29

28

32

39

43

41

36

38

36

45

67

46

33

95

183

T14

73

84 

*72

54

bSO

b45

b45

1,523

49.1

3,020

Jan.

b45

b40

40

40

42

46

49

50

55

60

63

54

67

92

102

64

56

57

67

85

74

81

57

49

45

41 

38

36

33

31

29

1,688

54.5

3,350

Feb.

II25

28

28

29

29

30

*31

31

33

34

b34

b33

b33

b32

b32

b32

b31

b30

28

42

69

66

45

34

33

30

31

33 ~ ~ ~

997

34.4

1,980

Mar.

40

60

85

52

34

40

42

68

81

57

36

40

41

40

42

46

49

52

50

55

52

54

56

64

li

72 

61

52

49

53

61

1,675

54.0

3,320

Apr.

64

72

63

57

57

56

69

76

102

118

107

100

111

118

*127

127

133

156

177

196

217

242

282

272

270' 

267

235

213

210

4,354

145

8,640

May

221

235

245

313

325

299

282

260

245

337

415

337

277

252

252

267

280

290

310

334

372

425

480

495

4S5

473 

495

470

429

418

405

10,729

346

21,280

. June

382

355

340

334

310

*270

247

235

226

219

213

202

193

252

277

238

206

181

206

206

171

165

160

147

137

120 

117

156

154

154

6,604

220

13,100

July

152

TTo" 154

88

84

85

82

71

66

67

72

72

75

78

76

64

64

61

61

66

58

54

53

52

55

118 

118

115

113

111

110

2,616

84.4

5,190

Aug.

107

137

158

154

177

196

19T

187

185

181

185

169

137

135

133

132

142

185

185

179

*144

120

116

115

113 

113

113

113

110

113

4,532

146

8,990

Sept.

113 us111

99

79

79

79

76

78

79

82

82

66

53

53

56

63

72

91

92

86

82

79

82

84

79

55

26

27

22

2,238

74.6

4,440

Calendar year 1955 : Max 191 'Mln 10 Mean 57.3 Ac-ft 41,480

Water year 1955-56 : Max 495 Mln 14 Mean 105 Ac-ft 76,290

* ~ Discharge uiscnarge measurement measurement made maae on on this tnis day. aay. 

b Stage-discharge relation affected by Ice. 

Note. No gage-height record Nov. 17-28, Jan. 25 to Feb. 8, Mar. 16, 17; discharge estimated on 

basis of 2 discharge measurements, records for Pit River near Canby, and weather records.
SACRAMENTO RIVER BASIN 377

Pit River near Canby, Calif.

Location. Lat 41°24', long 120°55' , in SW£ sec. 10, T. 41 N., R. 9 E., on right bank at 

lower end of Warm Spring Valley, 4 miles southwest of Canby.

Drainage area. 1.430 sq mi, approximately, excluding Goose Lake basin.

Records available. January 1904 to December 1905, May 1929 to September 1956 (1929-31 

incomplete).

Gage. Water-stage recorder. Altitude of gage is 4,300 ft (from topographic map). January 1904 to December 1905, staff gage and May 6, 1929, to Sept. 30, 1931, water-stage 

recorder, at site 100 ft upstream at different datum.

Average discharge. 25 years (1931-56), 228 cfs (165,100 acre-ft per year).

Extremes. Maximum discharge-during year, 4,260 cfs Dec. 23 (gage height, 8.39 ft); minimum, 19 cfs July 3, 4.

1904-5, 1929-56: Maximum discharge observed, 13,000 cfs (revised) Mar. 8, 1904 

(gage height, 15.0 ft, revised, datum then in use); minimum, 0.1 cfs Apr. 29, Aug. 5, 

Sept. 18, 1934, Aug. 18-21, 1935.

Revisions. The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

298

791 

811 

831

Water 

year

1904 

1935 

1936 

1937

Date

Mar. 

Apr. 

Feb. 

Mar.

8, 1904 

9, 1935 

22, 1936 

14, 1937

Discharge 

(cfs)

13,000 

1,820 

2,800 

1,690

Gage height 

(feet)

*15.0 

5.66 

7.05 

5.43

* Revised; datum then in use.

Remarks. Records good except those for period of ice effect, which are fair. Plow regulated by many small reservoirs (total capacity now about 141,000 acre-ft). Diversions 

for irrigation of about 39,000 acres above station.

Revisions. WSP 861: Drainage area. Revised figures of discharge, in cubic feet per 

second, for the water years 1904 and 1936, superseding those published in WSP 298, and 

811, are given herewith:

Date

1904,

Feb. 16

23

24

25

26

27

Mar. 4

5

6

7

Discharge

6,260

6,260

6,650

5,520

6,000

4,580

4,300

4,380

3,700

5,220

Date

1904-Con.

Mar. 8

9

10

11

19

20

21

22

29

30

Discharge

11,200

9,170

6,OOO

4,200

3,900

5,040

3,750

3,600

5,4OO

5,160

Date

1904-Con.

Mar. 31

1936

Feb. 14

15

16

17

18

19

20

Discharge

4,630

607

1,170

1,400

1,530

1,430

1,270

1,170

Date

1936-Con.

Feb. 21

22

23

24

25

26

27

28

29

Discharge

1,710

2,560

2,270

1,69O

1,460

1,530

1,270

1,110

1,040

Month

Calendar year 1904. ....

Water year 1935-36..... 

Calendar year 1936. ....

Cfs-days

_

87,039.7 

85,477.7

Maximum

11,200

2,560 

2,550

Minimum

115

8

1.2 

1.2

Mean

1,960

903

238 

234

Runoff in 

acre-feet

113,000

655,000

50,040

172,600 

169,500
378 SACRAMENTO RIVER BASIN

Pit River near Canby, Calif. Continued

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Mar. 26 Mar. 27 to Sept. 30

2.4 

2.6 

2.8 

3.1 

3.5

27

65

117

230

420

4.0 700

5.0 1,350

6.0 2,090

8.0 3,870

2.3 15

2.5 44

2.7 90

3.0 195

3.5 430

4.0 720

5.0 1,350

7.0 2,930

Discharge, In euble feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24 

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

41 

39

37

36

36

39

41

41

41

39

*41

46

48

54

44

46

52

57

57

67

37

59 

54

54

52

46

46

54

52

1,458

47.0

2,890

Nov.

44 

44

48

67

89

82

70

77

70

65

57

57

50

44

11

44 

52

48

61

84

131

151 

T27

106

82

67

63

63

*70

63

2,115

70.5

4,200

Dec.

61

57

54

67

50

44

44

65

70

63

65

109

222

385

340

174 

117

172

1,030

1,600

1,540

1,510 

3,420

5.850 

2,910

2,620

*2,360

2,250

1,510

1,170

616

28,525

920

56,580

Jan.

465 

390

420" 350

682

676

840

898

622

640

670

808

963

1,110

1,650

5.250 

3,180

2,500

1,990

1,770

1,620

1,610 

1,670

*1,700 

1,520

1,310

970

796

628

465

385

36,548

1,179

72,490

Feb.

350 

300

270

270

270

270

270

270

*270

260

260

260

260

260

250

250 

250

250

250

250

600

2.200

1,880

1,250 

963

616

430

385

370

14,034

484

27,840

Mar.

385 

452

989

1,530

1,340

982

688

652

796

963

1,020

814

598

547

592

670 

820

1,050

1,260

1,500

1,670

*1,870 

2,020

2,220 

2,420

2.660

2,556

2,260

1,910

1,660

1,560

40,488

1,306

80,310

Apr.

1.410 

1,300

1,190

1,040

936

870

798

762

750

738

756

810

870

864

810

804 

774

738

708

690

696

714 

726

744 

768

786

780

768

774

732

25,106

837

49,800

May

654 

582

529

570

576

624

684

726

750

*762

732

744

852

960

1,080

1.100 

1,010

870

720

648

660

672 

666

654 

660

678

660

642

512

564

540

22,081

712

43,800

June

654 

690 660"

648

546

*496

441

405

370

271

215

152

187

203

219

266 

355

452

420

375.

295

276 

276

235

199

148

134

141

120

65

9,914

330

19,660

July

46

41

26

37

124

85

88

80

78

90

120

144

TSo" 155

120

141 

141

117

"105

114

124

93 

99

88 

80

78

70

75

78

99

88

2,954

95.3

5,860

Aug.

85 

78

68

61

46

4444"

44

50

59

46

44

50

57

90

120 

114

151

134

102

90

*63 

57

52 

61

75

82

120

187

TS5

96

2,525

81.5

5,010

Sept.

114 

108

102

134

141

117

114

108

105

72

61

59

46

39

52

134 

120

96

111

90

96

138 

144

152 

TT7

120

102

99

96

96

3,083

103

6,120

Calendar year 1955.: Max 3,830 Min 4.2 Mean 174 Ao-ft 126,100

Water year 1955-56: Max 3,830 Min 26 Mean 516 Ao-ft 374,600

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Feb. 1-21.
SACRAMENTO RIVER BASIN 

Pit River near Bieber, Calif.

379

Location. Lat 41°00', long 121"09', in NW£ sec. 34, T. 37 N., R. 7 E., on right bank 

1.5 miles upstream from Spring Gulch and 8 miles south of Bieber.

Drainage area. 2,970 sq mi, approximately, excluding Goose Lake basin.

Records available . January 1904 to September 1908, December 1913 to August 1914, September 1921 to September 1926, November 1928 to September 1931, October 1951 to September 

1956.

Gage.--Water-stage recorder. Altitude of gage is 4,100 ft (from river-profile map). 

Prior to November 1928, staff gage at same site and datum.

Average discharge . 15 years (1904-6, 1907-8, 1921-26, 1929-31, 1951-56), 426 cfs 

(308,400 acre-ft per year).

Extremes.--Maximum discharge during year, 11,700 cfs Dec. 24 (gage height, 10.78 ft), 

from rating curve extended above 6,300 cfs by logarithmic plotting; minimum, 1.1 cfs 

Aug. 14, 15.

1904-8, 1913-14, 1921-26, 1928-31, 1951-56: Maximum discharge, 33,800 cfs Mar. 19, 

1907 (gage height, 16.7 ft), from rating ourve extended above 15,000 cfs by logarithmic 

plotting; no flow at times in 1923-24, 1926, 1929-31, 1955.

Remarks. Records good except those for period of ice effect, which are fair. Flow regulated by many small reservoirs (total capacity now about 201,000 acre-ft). Diversions 

for irrigation of about 33,000 acres between stations near Canby and near Bieber.

Revisions (water years). WSP 881: Drainage area. WSP 1285: 1907, 1930.

Rating table, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.7

1.8

1.9

2.0 

2.2 

2.5 

2.8 

3.2

1.2 

2.5 

4.8 

9,0

156

3.6 

4.0

5.0 

6.0 

7.0 

9.0 

11.0

248

390

980

1,870

3,100

6,780

12,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

~B7 114 

40

26

22

21

28

26

33

33

28

*38

37

34

47

96

82 

74

82

68

57

62

60

60 

66

67

68

88

59

59 

5O

1,692

54.6

3,360

Nov.

51 

59

53

51

53

72

96

89

79

81

78

70

66

67

58

57

49 

53

63

91

138

148

154

189 

T63

142

128

*108

98

93

2,697

89.9

5,350

Dec.

114 

124

116

98

91

108

96

89

102

126

146

167

240

354

422

485

465 

473

1,310

3,570

4,670

4,310

6,470

10.900 

8,160

*6,220

5,620

5,130

3,060

2,900

2,330

68,466

2,209

135,800

Jan.

1,670 

1,160

959

875

1,190

1,670

2,010

2,020

2,360

2,070

2,300

2,300

2,170

2,650

3,620

4,680

5,030 

5.150

4,420

3,920

3,920

3,800

3,890

4,380 

3,540

3,100

2,590

2,100

1,600

1,200 

9OO

83,244

2,685

165,100

Feb.

700 

600

520

450

410

400

390

380

370

360

350

340

330

330

320

310

300 

300

300

300

719

2,440

4,330

5.160 

4.160

2,660

2,160

1,670

1,440

32,499

1,121

64,460

Mar.

1.570 

1,460

1,980

3,260

3,110

2,810

2,340

2,270

2,450

2,680

2,420

2,160

1,980

1,860

1,830

1,840

2,000 

2,260

2,590

3,040

3,488

3,860

4,170

"4,410 

4,750

5,210

5,400

*4,980

4,360

3,940

3,830

94,100

3,035

186,600

Apr.

5.680 

3,320

2,920

2,590

2,440

2,320

2,180

2,100

2,010

1,950

2,060

2,080

2,020

2,100

2,080

1,960

1,840 

1,730

1,620

1,550

1,490

1,460

1,450

1,440 

1,440

1,470

1,500

1,490

1,410

1.520

59,020

1,967

117,100

May

1,240 

1,120

1,020

959

1,040

1,160

1,120

,120

,120

* ,140

,280

,400

,400

,360

,310

1,370

1.450 

1,410

1,260

1,090

945

814

698

736 

723

680

730

710

556

519

602

32,082

1,035

63,630

June

620

656" 756

698

*692

650

579

510

450

404

342

148

64

49

106

191

202 

230

240

126

515

354

204

285 

302

275

254

171

122

84

10,309

344

20,450

July

104 

86

74

66

58

47

35

28

26

28

52

88

81

106

154

128

42 

26

44

94

72

91

130

94 

82

64

48

43

39

28

28

2,086

67.3

4,140

Aug.

19 

13

8.4

5.8

4.8

4.2

3.9

2.8

2.4

1.9

1.8

1.6

1.4

1.2

274

2.6

15 

6.2

11

23

*8.4

11

14

14

15

37

12

9.0

10

11

12

285.8

9.22

567

Sept.

18 

16

62

19

127

54

57

73

50

44

31

83

172

T?8

89

70

58 

54

78

108

124

116

100

102 

116

128

154

163

124

108

2,646

88.2

5,250

Calendar year 1955: Max 10,900 Mln o Mean 311 Ac-ft 225,200

Water year 1955-56: Max 10,900 Mln 1.2 Mean 1,063 Ac-ft 771,800

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Jan. 28 to Feb. 20.
380 SACRAMENTO RIVER BASIN

Hat Creek near Hat Creek, Calif.

Location.--Lat 40°41', long 121°25', in SE£ sec. 28, T. 33 N., R. 5 E., on right bank 

1 mile northeast of Old Station Post Office and 8 miles southeast of Hat Creek Post 

Office.

Drainage area. 122 sq mi, hydrologic drainage boundary uncertain owing to ground-water 

exchange.

Records available. July 1926 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,300 ft (from topographic map). July 

1926 to April 1928 at site 0.5 mile upstream at different datum.

Average discharge. 29 years (1926-29, 1930-56), 127 cfs (91,940 acre-ft per year).

Extremes. Maximum discharge during year, 1,050 cfs Dec. 23 (gage height, 5.06 ft); minimum, 114 cfs Oct. 31, Nov. 1, 12, 14.

1926-56: Maximum discharge, 3,320 cfs Dec. 11, 1937 (gage height, 7.75 ft, in gage 

well, affected by drawdown), from rating curve extended above 160 cfs on basis of 

slope-area determination of peak flow; minimum, 67 cfs Sept. 7, 1934.

Remarks. Records good. Diversions for irrigation of about 260 acres above station. 

Revisions (water years). WSP 1395: Drainage area, 1938.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Dec

2.3 

2.6 

3.0 

4.0

Dec. 24 to Sept. 3O

109

163

259

575

2.4 

2.8 

3.2 

3.5

129

213

320

408

5.0 1,020

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

119

119

119

119

119

119

119

119

118

123

121

*118

118

118

118

119

119

119

119

119

119

119

119

119

119

121

119

118

118

116

3,684

119

7,310

Nov.

116

TT9

121

119

123

121

121

121

119

119

119

118

116

116

116

118

119

121

128

181

161

135

128

124

126

130

128

126

*126

126

3,761

125

7,460

Dec.

128

126

126

119

126

128

124

128

126

126

126

126

124

124

123

123

124

128

139

152

192

708

859

38T

258

226

194

182

174

163

161

6,047

195

11,990

Jan.

157

153

151

151

151

149

147

142

145

147

147

147

149

155

226

243

T93

180

174

171

*167

169

171

165

165

163

161

157

153

147

140

5,036

162

9,990

Feb.

136

136

140

145

147

145

145

145

143

145

145

147

147

145

142

136

145

143

142

134

134

140

138

140

145

147

145

147

147

4,136

143

8,200

Mar.

145

147

147

145

142

138

140

142

140

142

142

143

143

145

143

143

143

145

147

149

151

153

153

153

155

165

155

153

*151

153

155

4,558

147

9,040

Apr.

153

151

149

149

151

153

153

155

155

157

155

153

153

149

149

149

151

155

157

163

169

171

176

177

177

177

174

174

176

177

4,808

160

9,540

May

185

187

*194

233

216

203

191

185

187

187

185

180

176

180

189

208

223

228

246

273

284

300

309

298

292

298

292

278

287

303

298

7,295

235

14,470

June

289

284

3OO

298

*260

257

265

278

289

298

292

278

278

295

278

260

260

262

298

270

249

254

260

262

257

257

262

265

262

254

8,171

272

16,210

July

241

230

226

220

216

213

216

216

216

213

208

206

203

199

196

194

194

191

189

187

185

182

180

180

177

177

174

169

167

167

6,099

197

12,100

Aug.

167

169

171

17T

171

169

169

169

163

159

157

157

157

155

155

155

155

155

161

163

*163

163

163

163

163

161

163

159

155

151

151

5,003

161

9,920

Sept.

149

149

151

149

149

149

155

157

159

159

159

159

159

159

159

157

157

161

T61

155

153

153

155

153

153

153

153

157

157

157

4,656

155

9,240

Calendar year 1955: Max 859 Mln 108 Mean 142 Ac-ft 102,700

Water year 1955-56: Max 859 Mln 116 Mean 173 Ac-ft 125,500

Peak discharge (base. 170 cfs). Nov. 20 (9 p.m.) 2O9 cfs (2.86 ft); Dec. 23 (l p.m.) 1,050 cfs 

(5.06 ft); Jan. 15 (8 p.m.) 298 cfs (3.12 ft); May 4 (7:30 a.m.) 243 cfs (2.92 ft)j May 22 (11 p.m.) 

345 cfs (3.29 ft); May 30 (lO p.m.) 340 cfs (3.27 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 381

Pit River below Pit No. 4 Dam, Calif.

Location. Lat 40°59', long 121°47', In SW^ see. 17, T. 36 N. , R. 2 E., on right bank 

1 mile downstream from Pit No. 4 Dam and 3 miles downstream from Screwdriver Creek and 

Pit No. 3 powerhouse.

Drainage area.--4,860 sq ml, approximately, excluding Goose Lake basin.

Records available. July 1927 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 2,345 ft (from river-profile map).

Average discharge.--45 years (1911-56), 2,593 efs (1,877,000 aere-ft per year). Period 

1911-27 extrapolated on basis of records for Pit River at Big Bend.

Extremes.--Maximum discharge during year, 17,200 efs Dec. 23 (gage height, 14.39 ft); 

minimum dally, 54 efs Oct. 27.

1927-56: Maximum discharge, 30,200 efs Dee. 12, 1937 (gage height, 17.90 ft), from 

rating curve extended above 8,000 efs on basis of velocity-area studies; minimum dally, 

that of Oct. 27, 1955.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Flow regulated by many small reservoirs and powerplants (total usable reservoir 

capacity, about 200,000 aere-ft). Many diversions above station.

Cooperation. Water-stage-reeorder graph and three discharge measurements furnished by 

Pacific Gas & Electric Co., In connection with a Federal Power Commission project.

Revisions (water years).--WSP 843: 1935(M).

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

4.2 

4.6 

5.0 

5.5 

6.0

46

112

198

361

620

7.0

8.0

10.0

12.0

14.0

1,370

2,440

5,790

10,400

16,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

82

84

84

*82

84

180

638

455

445

125

75

75

74

718

1.120

434

74

75

74

74

74

72

75

74

106

60

54

630

908

1,030

119

8,254

266

16,370

Nov.

61

7T

80

82

80

80

80

82

79

79

79

79

79

77

77

77

79

79

82

108

94

89

91

91

89

89

87

89

89

89

2,487

82.9

4,930

Dec.

92

86

87

87

92

99

86

87

*91

84

84

84

82

86

86

86

91

112

288

2,810

4,270

7,050

15.500

13,100

13,300

10,400

*9,660

7,330

4,780

2,840

2,2OO

93,130

3,004

184,700

Jan.

1,650

986

434

^96" 196

998

1,520

3,190

2,48O

2,090

1,940

2,OOO

1,890

2,460

3,920

5,740

6.500

6,120

5,730

4,930

4,870

4,650

4,740

5,230

5,110

4,700

3,800

3,280

2,660

1,800

1,330

97,840

3,156

194,100

Feb.

al,0oo

a850

aSOO

116

122

123

153

220

*194

125

123

120

114

112

T52

323

122

116

112

120

151

3,190

7,420

7,680

7,180

4,750

3,320

2,720

2,090"

43,618

1,504

86,510

Mar.

1,880

1,500

1,840

2,840

3,690

3,310

2,930

2,550

2,540

2,540

2,500

2,130

1,830

1,650

1,590

1.440

1,530

1,750

2,040

2,510

3,000

3,870

3,970

4,520

5,030

4,360

*6.560

5,970

5,310

4,610

4,090

95,680

3,086

189,800

Apr.

4.090

3,960

3,140

2,900

2,570

2,590

2,550

4,340

2,260

2,320

2,270

2,390

2,410

2,450

2,310

2,450

2,270

2,040

1,870

1,790

1,720

1,500

1,690

1,720

1,680

1,770

1,710

1,730

1,590

1.460

69,540

2,318

137,900

May

1,300

1,220

1,010

1,100

1,680

1,870

1,900

1,740

1,750

1,740

1,820

2,130

5.250

1,660

1,490

1,290

1,240

1,280

1,190

1,010

908

790

560

365

420

301

1,490

158

155

153

133

37,103

1,197

73,590

June

101

89

87

84

84

84

84

*82

82

80

82

114

*151

149

162

TSo" 164

158

155

162

153

158

155

149

153

155

155

155

135

162

3,844

128

7,620

July

149

155

149

153

151

162

155

155

143

151

153

158

158

155

155

151

153

151

149

151

151

151

147

149

149

147

145

151

143

143

155

4,666

151

9,250

Aug.

*133

145

145

147

141

145

141

141

143

143

143

139

141

141

143

143

141

145

143

141

141

139

139

139

143

139

139

139

137

135

*139

4,369

141

8,670

Sept.

141

143

143

137

137

137

139

137

133

131

131

131

133

129

133

133

133

133

135

131

133

135

135

131

127

125

TBT

137

131

133

4,018

134

7,970

Calendar year 1955: Max 13.50O Min 54 Mean 1,547 Ac-ft l,12O,oOO

Water year 1955-56: Max 13,500 Min 54 Mean 1,269 Ao-ft 921, 4OO

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of unpublished records for Pit No. 5 powerhouse .
SACRAMENTO RIVER BASIN

Pit River at Big Bend, Calif.

Location. Lat 41°01', long 121 "55', in sec. 31, T. 37 N., R. 1 E., on left bank at Big 

Bend, 0.5 mile downstream from Nelson Creek and 1 mile upstream from Kosk Creek.

Drainage area.--4.920 sq mi, approximately, excluding Goose Lake basin.

Records available. October 1910 to September 1956. Published as "at Henderson" 1910-23.

Gage. Water-stage recorder. Datum of gage is 1,674.47 ft above mean sea level, datum of 

1929. Prior to Dec. 28, 1912, staff gage and Dec. 28, 1912, to June 21, 1924, waterstage recorder, at satie site at datum 7.69 ft higher.

Extremes. Maximum discharge during year, about 18,000 cfs Dec. 23, estimated on basis of 

peak discharges for nearby stations; minimum daily, 64 cfs Dec. 2-5.

1910-56: Maximum discharge, 34,200 cfs Dec. 12, 1937 (gage height, 16.26 ft), from 

rating curve extended above 12,000 cfs on basis of velocity-area studies; minimum daily, 

34 cfs Mar. 29, 1955.

Remarks. Records fair except those for periods of no gage-height record, which are poor. 

Flow regulated by many reservoirs and powerplants (total usable reservoir capacity, 

about 200,000 acre-ft). Many diversions above station; diversion to Pit No. 5 powerhouse began May 1, 1944. For record closely comparable with previous record of total 

flow at Big Bend, see Pit River below Pit No. 4 Dam, preceding page.

Cooperation. Water-stage-recorder graph furnished by Pacific Gas & Electric Co. in 

connection with a Federal Power Commission project.

Revisions (water years) . WSP 1345: 1911, 1914(M) , 1916(M) , 1917, 1928, 1935-36(M).

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

5.5 

6.0

7.0

51

153

346

390

610

910

8.0

9.0

10.0

11.0

13.0

14.0

1,760

3,960

4,600

6,750

9,900

19,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

131 

134

131

*134 

134

131

118

104

101

116

114

116

113

114

103

113

118 

131

131

118

117

117

118

116

130

133

118

116

106

106

116

3,597

116

7,130

Nov.

106 

93

94

93 

93

93

84

84

"90 81

90

93

101

94

98

97

97 

103

141

318

188

133

135

118

111

alll

a!09

a 100

a90

aSl

3,304

110

6,550

Dec.

a73 

a64

a64

a64 

*64

73

66

75

93

76

79

84

79

74

69

93

110

314

1,440

4,430

5,780

a9,000

a 15. OOP

14,600

14,100

11,600

10,600

8,340

5,930

3,880

3,360

109,461

3,531

317,100

Jan.

3,680 

1,970

1,390

1,010 

2,040

3,110

3,950

4,830

3,830

3,370

3,130

3,160

3,070

3,910

5,610

7,340

7,570 

6,880

6,500

5,910

5,780

5,760

5,840

6,040

5,970

5,350

4,790

4,100

3,480

3,500

1,960

130,530

4,310

358,900

Feb.

1,430 

666

446

383 

304

484

442

484

430

*383

334

331

316

313

307

440

304 

379

368

498

1,340

4,860

8,450

8,090

7,610

5,500

4,070

3,370

3,730

54,833

1,891

108,800

Mar.

3,470 

3,010

3,360

3,160 

4,190

3,780

3,430

3,030

3,000

3,930

3,330

3,570

3,210

3,060

1,940

L880

1,880 

3,090

3,390

3,860

3,340

3,950

4,430

4,830

4,990

5,460

*6.330

5,950

5,400

4,830

4,340

107,180

3,457

312,600

Apr.

4.340 

4,180

3,490

3,340 

3,860

2,900

2,850

3,340

3,730

3,660

3,600

3,690

3,770

3,780

3,400

3,760

3,640 

3,380

3,190

2,110

3,030

1,860

3,010

3,010

3,040

3,100

3,060

3,110

1,930

1.830

77,850

3,595

154,400

May

1,580 

1,4-90

*1,370

1,860 

3,380

3,660

3.680

3,410

3,340

3,270

3,390

1,380

1,470

1,470

1,590

1,680

1,610 

1,640

1,570

1,330

1,330

1,100

801

590

454

540

683

380

360

356

365

43,409

1,400

86,100

June

323 

316

403

306 

306

303

300

*300

300

195

193

193

190

190

183

179

181 

179

183

181

179

176

a!76

a!74

a!73

a!71

a!69

a!67

a!66

166

5,815

194

11,530

July

163 

166

164

163 

159

159

156

155

156

158

158

153

153

156

155

155

158 

158

158

156

153

153

153

155

155

155

150

148

148

148

153

4,830

156

9,580

Aug.

*155 

150

150

148 

153

148

150

150

150

148

144

146

146

147

148

148

146

143

143

143

148

146

140

146

144

138

144

147

146

147

146

4,544

147

9,010

Sept.

144

143

141

144 

146

147

143

141

146

144

143

144

141

144

140

147

140

140

146

142

141

138

134

140

141

144

133

140

133

135

4,330

141

8,390

Calendar year 1955: Max 15,000 Mln 34 Mean 404 Ac-ft 392,700

Water year 1955-56: Max 15,000 Mln 64 Mean 1,503 Ac-ft 1,090,000

* Discharge measurement made on this day.

a No gage-height record; discharge Interpolated or estimated on basis of recorded range In stage, 

weather records, normal recession, and records for nearby stations.
SACRAMENTO RIVER BASIN 383

Pit River near Montgomery Creek, Calif.

Location.--Lat 40°51' long 121°59', in NEi sec. 32, T. 35 N., R. 1 W., on left bank 1 mile 

upstream from Cow Canyon Creek and 3.5 miles west of town of Montgomery Creek.

Drainage area.--5.170 sq mi, approximately, excluding Goose Lake basin. 

Records available. December 1944 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,075.00 ft above mean sea level (levels by 

Bureau of Reclamation).

Average discharge.--11 years (1945-56), 3,757 cfs (2,720,000 acre-ft per year).

Extremes. Maximum discharge during year, 37,100 cfs Dec. 23 (gage height, 14.12 ft), from 

 rating curve extended above 24,000 cfs by logarithmic plotting; minimum, 604 cfs 

Nov. 10.

1944-56: Maximum discharge, that of Dec. 23, 1955; minimum, 570 cfs Oct. 21, 1945.

Remarks.--Records excellent. Flow regulated by many small reservoirs and several powerplants above station since beginning of record. Many diversions above station for 

irrigation. Concerning regulation and diversions see Remarks for stations upstream. 

This station is Just above pool stage when Shasta Lake is full. Records of water temperatures for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

2.1. 

2.5 

3.0 

4.0 

5.0

640

940

1,410

2,700

4,400

6.0 6,500

6.0 11,800

10.0 16,900

14.0 36,500

2.1 660

2.5 970

3.0 1,490

4.0 2,840

5.0 4,640

8.0 12,000

12.0 27,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18 

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

1,840 

2,110

2,260

2,310

2,370

2,720

1,420

768

640

2,570

2,460

2,630

2,580

1,870

1,270

2,650

2,440 

2,590 

2,640

2,530

2,670

2,600

2,400

2,580

2,500

2,620

2,640

1,770

1,050

1,160

2 1 960

67,618

2,181

134,100

Nov.

*2,390 

2,600

2,530

2,590

2,570

2,540

2,520

2,460

2,560

2,580

2,530

2,580

2,560

2,090

2,040

2,010

1,960 

2,190 

2,300

4,640

3,960

2,840

2,960

2,660

2,930

2,590

2,800

2,740

2,680

2,730

79,130

2,638

157,000

Dec.

2,810 

2,990

2,770

2,590

2,760

2,970

2,830

2,990

3,600

3,000

2,810

3,110

«2.440

2,836

2,890

3,330

4,000 

6,350 

12,000

14,500

19,900

23,600

32.100

*23,600

21,700

21,000

19,000

15,300

12,400

9,730

6 j 670

295,770

9,541

586,700

Jan.

8,440 

7,770

6,850

7, 100

8,560

8,900

12,400

12,900

10,700

10,100

9,620

9,280

9,830

12 , 400

17_. 600

17,200

15,000 

13,700 

13,000

12,900

12 , 600

13,300

13,900

13,000

12,600

11,800

11,600

10,200

9,390

8,250

7,530

348,420

11,240

691,100

Feb.

6,850 

6,120

5,770

5,640

5,440

5,530

5,460

5,420

*5,310

5,180

5,140

5,100

5,060

5,040

5,000

5,060

4,980 

4,920 

4,920

6,490

12,300

20,000

17,900

15,200

13,900

11,400

9,730

8,950

8,320

226,130

7,798

448,500

Mar.

7,860 

7,410

7,600

8,850

9,210

8,820

8,420

7,940

7,890

7,770

7,740

7,360

7,000

6,760

6,560

6,560

6,560 

6,740 

7,050

7,460

7,890

8,440

8,870

9,310

9,520

10,000

10,600

10,400

9,330

9,340

B f 620

254,580

8,212

505,000

Apr.

8.730. 

8,580

#7,980

7,740

7,410

7,410

7,380

6,490

7,050

7,310

7,220

7,220

7,310

7,260

7,070

7,070

7,100 

6,820 

6,760

6,690

6,650

6,470

6,630

6,690

6,630

6,690

6,580

6,540

6,430

6,300

212,210

7,074

420,900

May

6,100 

6,050

5,880

7,290

7,940

8.390

6,266

7,550

7,260

7,910

8,030

7,050

6,760

6,980

6,780

6,540

6,410 

6,410 

6,300

6,080

5,900

5,790

5,440

*5,220

5,000

5,080

4,220

4,760

4,680

4,680

4,640

195,320

6,301

387,400

June

4.580

4,B66

3,860

4,440

4,380

4,420

4,340

4,340

4,240

3,970

3,680

3,790

3,730

3,430

3,080

1,210

1,700 

3,190 

3,730

3,930

3,950

3,780

2,720

1.080

3,320

3,770

3,580

3,860

3,740

1,950

106,290

3,543

210,800

July

1,250 

3,640

3,820

3,910

3,480

3,480

1,510

856

2,830

*3,340

3,170

2,730

2,890

2,240

1,730

2,960

3,130 

3,430 

3,590

3,570

1,540

794

2,790

3,600

3,650

3,310

2,920

1,220

773

2,150"

4. 080

85,053

2,744

168,700

Aug.

3,780 

2,610

2,790

785

902

2,870

3,200

3,070

3,090

3,030

1,470

821

2,920

3,000

3,630

3,660

2,960 

906 

695

2,?4"0

3,560

3,420

2,960

2,690

796

818

2,990

2,930

2,910

2,920

3,120

77,943

2,514

154,600

Sept.

2,650 

938

1,770

2,910

2,950

3,120

2,980

2,160

972

2,740

2,810

3.490

3,200

3,000

910

1,580

2,850 

3,170 

3,270

3,270

3,130

828 1,39~0"

3,430

*2,940

2,560

2,960

3,360

2,570

1,160

75,068

2,502

148,900

Calendar year 1955: Max 32,100 Mln 640 Mean 3,363 Ac-ft 2,435,000

Water year 1955-56: Max 32,100 Mln 640 Mean 5,529 Ao-ft 4,014,000

Discharge measurement made on this day.
384 SACRAMENTO RIVER BASIN 

Squaw Creek above Shasta Lake, Calif.

Location. Lat 40*51'25", long 122°07'10", in SWi sec. 29, T. 35 N., R. 2 W., on left bank 

1.3 miles upstream from Salt Creek, about 2 miles upstream from Shasta Lake, and 

10 miles west of town of Montgomery Creek.

Drainage area. 65.3 sq mi.

Records available. December 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,170 ft (from topographic map).

Average discharge. 11 years (1945-56), 234 cfs (169,400 acre-ft per year).

Extremes. Maximum discharge during year, 17,800 cfs Dec. 21 (gage height, 21.90 ft), from 

rating curve extended above 4,200 cfs on basis of slope-area determination at gage 

height 18.90 ft; minimum, 15 cfs on many days during October.

1944-56: Maximum discharge, that of Dec. 21, 1955; minimum, 10 cfs Sept. 22-25, 

1949, Jan. 3, 1950.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Small diversions above station for irrigation. Records of water temperatures for the 

water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Feb. 21 Feb. 22 to Sept. 30

5.9 

6.2 

6.5 

7.0 

7.5 

8.0

15

32

50

89

151

240

9.0

10.0

11.0

13.0

15.0

19.0

540

990

1,560

3,040

5,060

11,400

5.9 

6.3

14

33

70

7.5 151

Note. Same as 

preceding table 

above 7.5 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

*16

16

16

16

15

15

15

15

15

17

19

T8

16

16

16

15

15

15

16

16

16

16 

16

16

16

19

18

16

16

16 

16

499

16.1

990

Nov.

16

T5

16

16

17

18

17

16

16

16

16

16

20

23

21

24

25

43

139

680

255

95 

82

86

78

68

67

70

68

61

2,101

70.0

4,170

Dec.

76

71

64

56

S5

158

133

126

355

186

140

129

 116

103

91

129

204

1,720

5,160

5,470

9,140

11,200 

6,870

2,400

1,490

1,670

1,550

1,150

895

742

620

52,274

1,686

103,700

Jan.

746

832

714

858

2,120

2,010

3,140

2,580

1,490

1,330

1,340

1,120

1,080

1,770

3,670

2,540

1,500

1,090

881

881

915

1,040 

1,390

1,080

905

940

1,080

1,020

809

*696

596

42,163

1,360

83,630

Feb.

513

452

410

376

346

318

296

281

267

253

242

234

226

218

210

198

195

'530' 184

2,150

8,060

7,616

3,340

1,670

1,190

925

778

701

670

31,933

1,101

63,340

Mar.

638

USS

620

620

564

495

446

410

382

361

334

318

299

284

272

262

258

255

245

240

235

230 

230

235

250

238

222

210

200

193

1 O7 igX

10,333

333

20,500

Apr.

179

m

164

*158

154

150

146

147

145

141

139

136

132

128

123

120

118

117

116

117

117

115

113

11S

110

110

107

100

97

95

3,877

129

7,690

May

93

92

9T

219

299

299

364

318

269

326

491

4T3

343

294

258

232

210

193

179

169

158

150 

143

136

131

126

119

115

111

111

105

6,561

212

13,010

June

~5T 100

93

92

89

87

84

81

79

78

75

74

72

74

75

71

68

66

77

68

64

61 

59

58

56

55

54

52

51

49

2,159

72.0

4,280

July

48

49

Tf

47

45

44

43

42

41

*40

40

40

39

39

38

37

36

35

34

34

33

32 

31

30

30

29

29

29

28

28

COCQ

1,145

36.9

2,270

Aug.

28

27

26

26

26

26

26

26

25

24

24

24

24

24

23

22

22

22

22

22

22

22

21

21

21

21

21

21

2020"

20

719

23.2

1,430

Sept.

19

19

19

18

18

18

18

18

18

18

18

18

18

18

18

18

18

18

19

20.

19

18 

17

17

*17

16rs

16

16

16

534

17.8

1,060

Calendar year 1955: Max 11,200 Mln 14 Mean 245 Ao-ft 177,200

Water year 1955-56: Max 11,200 Mln 15 Mean 422 Ae-ft 306,100

Peak discharge 

2,780 cfs (12.68 ft)

16: Max II.KUU Mln 15 Mean 422 Ac-rt 3Ub,j.uo

(base. 2,000 efs). Dec. 21 (10:50 p.m.) 17.800 efs (21.90 ft); Jan. 5 (5 p.m.)

<-,,ou uj.0 ^t.oo ft); Jan. 7 (6 p.m.) 4,210 cfs (14.25 ft); Jan. 15 (3 p.m.) 4,570 ofs (14.58 ft); 

Feb. 21 (2 p.m.) 10,800 cfs (18.67 ft).

* Discharge measurement made on this day.

Note. No gage-height record Mar. 19-25, Apr. 7-18; discharge estimated on basis of recorded range 

In stage and records for Sacramento River at Delta.
SACRAMENTO RIVER BASIN 385

McCloud River below Big Springs, near McCloud, Calif.

Location.--Lat 41°13'40", long 122°02'45", in NEir sec. 14, T. 39 N., R. 2 W., 1,400 ft 

downstream from lower Big Springs and 5j miles southeast of McCloud.

Drainage area. 340 sq mi, approximately.

Records available. January 1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,950.8 ft above mean sea level (riverprofile survey).

Extremes. Maximum discharge during year, 10,100 cfs Dec. 21 (gage height, 6.80 ft), from 

rating curve extended above 6,200 cfs on basis of slope-area determination of peak flow; 

minimum daily, 568 cfs Nov. 9.

1955-56: Maximum discharge, that of Dec. 21, 1955; minimum daily, that of Nov. 9, 

1955.

Remarks. Records good. One small diversion above station for domestic and municipal use.

Cooperation. Water-stage-recorder graph and 11 discharge measurements furnished by The 

California-Oregon Power Co.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Aug. 12 to Sept. 30)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

1.4 525

1.7 785

2.0 1,080

2.5 1,670

3.0 

4.0 

6.0

2,350

4,020

8,320

1.4 

1.7 

2.0

660

900

1,180

3.0 2,360

4.0 4,020

6.0 8,320

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3 

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

ZZ

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

'S5? 652

644 

644

*644

627

610

610

618

610

610

610

602

602

602

610

610

610

602

602

602

602

602

602 

584

584

584

593

593

593 

584

18,894

609

37,480

Nov.

584

584

584 

584

584

576

576

*576

568

WB

584

584

584

584

584

584 

584

584

610

704

686

636

627

610 

610

610

610

610

a610

a610

17,997

600

35,700

Dec.

a610 a'STO"

a610 

a618

a618

a618

a618

*a618

618

610

610

610

610

610

610

618 

618

670

1,060

3,640

*7.210

77175

4,930

2,130 

1,620

1,840

1,680

1,330

1,180

1,080

1,030

47,004

1,516

93,230

Jan.

990

936

909 

900

900

954

1,010

927

*900

909

954

927

936

974

1,370

1,510 

1,240

1,110

1,050

1,040

1,040

1,050

1,150

1,050 

1,030

999

963

936

909

884

31,341

1,011

62,160

Feb.

860

852

852 

*844

844

836

836

828

820

820

812

812

812

812

812

796 

804

788

796

796

1,190

*1,970

1,960

1,440 

1,230

1,120

1,060

1,020

990

28,412

980

56,350

Mar.

963

936

954 

963

927

900

884

884

884

884

876

*868

868

876

868

876 

884

892

900

900

927

945

963

999 

1,040

1,100

1,070

1,060

1,060

1,080

1,100

29,331

946

58,180

Apr.

1,070

1,040

1,030 

1,040

1,050

1,060

1,100

1,120

1,140

1,170

1,160

1,140

1,140

1,130

1,120

1,130 

1,160

1,180

1,190

1,240

1,300

1,320

1,370

1,410 

1,370

1,330

1,280

1,270

1,270

*1,250

35,580

1,186

70,570

May

1,240

1,250

1,250 

1,440

1,590

1,530

1,480

1,380

1,330

1,330

1,420

1,300

1,240

1,220

1,200

1,220 

1,250

1,280

1,310

1,340

1,340

1,340

1,360

1,320 

1,300

1,260

1,220

1,190

1,170

1,166

1,190

40,470

1,305

80,270

June

1,170

TTTJO"

1,140 

1,120

1,090

999

963

954

963

954

954

*954

945

954

945

918 

918

927

936

918

900

884

876

868 

868

868

876

860

852

852

28,566

952

56,660

July

836

836

836 

820

796

788

796

796

796

804

796

796

788

804

820

812 

812

*812

812

812

820

820

820

780 

772

Teo" 764

780

764

772

772

24,812

800

49,210

Aug.

764

764

764 

756

764

764

764

764

772

761

764

764

764

772

764

764 

*764

756

756

756

756

756

756

?56 

748

748

748

748

748

748

740

23,516

759

46,640

Sept.

73Q- 740

740 

740

740

740

732

732

732

732

732

732

732

732

732

732 

724

724

724

724

724

724

724

724 

724

*716

72T

724

724

724

21,888

730

43,410

Calendar year 1955: Max - Min - Mean - Ac-ft -

Water ilater year year 1955-56: 1955-56: Max Max 7,210 7,210 Min Min 568 568 Mean Mean 950 950 Ac-ft Ac-ft 689,900 689,900

Peak discharge (base, 850 cfs). Dec. 21 (10:30 p.m.) 10,100 cfs (6.80 f t) j Dec. 26 (8 p.m.) 

2,250 cfs (2.92 ft); Jan. 16 (1 a.m.) 1,710 cfs (2.49 ft); Feb. 23 (1 a.m.) 2,230 cfs (2.91 ft); 

May 5 (5 a.m.) 1,670 cfs (2.45 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage, 1 discharge measurement, and records for station above Panther Creek.
386 SACRAMENTO RIVER BASIN

Angel Creek near McCloud, Calif.

Location. Lat 41°11'40", long 122"03'25", in SW£ sec. 26, T. 39 N., R. 2 W., on right bank 

about 500 ft downstream from Pan Gulch, 900 ft upstream from mouth, and 6 miles southeast of McCloud.

Drainage area. 16.8 sq mi.

Records available. January 1955 to September 1956.

Gage..--Water-stage recorder. Datum of gage is 2,739.3 ft above mean sea level (riverprofile survey).

Extremes. Maximum discharge during year, 2,000 cfs Dec. 20 (gage height, 6.27 ft), from 

rating curve extended above 330 cfs; minimum, 7.2 cfs, many days in November and 

September.

1955-56: Maximum discharge, that of Dec. 20, 1955; minimum, 7.2 cfs many days in 

1955, 1956.

Remarks.. Records good except those for periods of no gage-height record and those above 

500 cfs, which are poor. No storage or diversion above station.

C_oop_eratlon. Water-stage-recorder graph and 11 discharge measurements furnished by 

California-Oregon Power Co. in connection with a Federal Power Commission project.

Rating tables, water year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 20 Dec. 20 to Sept. 30

1.2 

1.4 

1.6 

2.0 

2.5

15

29

72

162

3.0 

3.5 

4.0 

4.5 

5.0

280

440

630

860

1,140

1.0 

1.3 

1.6

3.0

8.3

21

46

91

2.0 

2.5 

3.0 

4.0 

6.0

172

320

510

920

1,870

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

8.0

8.0

8.0

8.0

8.0

7.6

s!o

8.0

8.0

*8.8

9.2

8.8

8.8

8.8

8.8

8.

8.

8.

8.

8.

8.4

8.4

8.0

8.0

8.0

8.8

8.0

8.0

8.0

7.6 

7.6

255.6

8.25

507

Nov.

7.6

7.6

7.6

8.0

8.0

8.0

*8.0

8.0

7.6

7.6

7.2

7.2

8.0

8.0

7.6

8.0

8.4

8.8

23

59

35

18

14

12

12

11

11

11

11

11

369.2

12.3

732

Dec.

12

12

12

11

11

12

*10

11

11

11

12

12

12

12

12

12

13

60

230

950

1.510

1,260

930

437

306

366

296

219

172

149 

136

7,219

233

14,320

Jan.

128

113

105

100

100

126

*165

141

132

130

132

132

134

142

277

274

202

160

145

143

141

143

156

143

136

134

124

113

102

93

86

4,352

140

8,630

Feb.

77

71

68

65 *60

58

56

54

51

50

47

47

46

45

44

42

41

40

41

53

316

486

*328

205

156

134

124

111

102

3,018

104

5,990

Mar.

93

88

89

89

84

77

72

69

69

68

*63

60

57

57

55

55

56

60

63

63

66

68

71

77

84

91

86

81

76

76 

76

2,239

72.2

4,440

Apr.

72

69

65

63.

63

65

67

71

73

76

78

79

77

75

74

75

76

77

80

83

87

91

96

~99 100

97

95

93

92

*91

2,399

80.0

4,760

May

89

89

93

115

124

128

124

118

111

111

113

104

96

91

89

91

95

98

100

104

104

105

105

100

96

91

88

82

79

76

11

3,080

99.4

6,110

June

11

68

65

62

57

56

54

51

50

50

*50

47

46

52

45

43

41

40

44

41

38

37

35

35

34

33

31

31

30

30

1,367

45.6

2,710

July

29

29

29

27

27

27

27

26

25

25

25

25

24

24

24

23

*23

22

22

22

21

20

20

20

19

19

19

18

18

18

!Z

714

23.0

1,420

Aug.

16

17

16

16

16

16

15

15

15

15

15

15

15

15

15

15

*15

15

15

15

16

16

16

16

17

17

17

17

17

17 

16

489

15.8

970

Sept.

16

lg

14

13

12

11

10

9.5

8.9

8.3

8.3

7 . 8

8.3

7.8

8.9

8.9

9.5

11

11

11

11

11

11

11

11

*11

11

11

11

318.0

10.6

631

Calendar year 1955: Max - Mln - Mean - Ac -ft -

Water Mater year year 1955-56: 1955-56: Max Max 1,510 i,t>io win win 7.2 7.Z Mean Mean 70.5 vo.b Ao-ft Ao-ft 51,220 b-i.zzu

Peak discharge (base. 100 cfs). Dec. 20 fll:30 P.m.) 2.000 cfs (6.27 ft); Dec. 25 (1 a.m.) 1.270 

ofs (4.77 ft)j Dec. 26 (3 p.m.) 434 ofs (2.81 ft); Jan. 7 (4 a.m.) 172 ofs (2.00 ft); Jan. 15 (5 

p.m.) 348 ofs (2.58 ft); Feb. 22 (4 p.m.) 530 ofs (3.05 ft); Apr. 24 or 25 (time unknown) 104 ofs 

(1.67 ft); May 6 (2 a.m.) 130 ofs (1.81 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 14-20, Apr. 6-29; discharge estimated on basis of 1 discharge 

measurement and records for MoCloud River near MoCloud and below Big Springs near McCloud.
SACRAMENTO RIVER BASIN 

McCloud River near McCloud, Calif.

387

Location. Lat 41°11'20", long 122 0 03'50", in NE£ sec. 34, T. 39 N., R. 2 W., on right bank 

0.4 mile downstream from Angel Creek and 6 miles southeast of McCloud.

Drainage area. 382 sq mi.

Records available. April 1931 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,711.6 ft above mean sea level (riverprofile survey).

Average discharge. 25 years, 872 cfs (631,300 acre-ft per year).

Extremes. Maximum discharge during year, 11,800 cfs Dec. 21 (gage height, 9.42 ft), from 

rating curve extended above 3,700 cfs on basis of slope-area determination of peak flow; 

minimum, 745 cfs Nov. 15.

1931-56: Maximum discharge, that of Dec. 21, 1955; minimum, 524 cfs Nov. 23, 24, 

1932.

Revisions.--The maximum discharge for the water year 1940 has been revised to 10,800 

cfs Feb. 28, 1940 (gage height, 8.9 ft), superseding figure published in WSP 901.

Remarks. Records good. Two small diversions above station for irrigation, and one 22-inch 

pipeline for town of McCloud and millpond.

Revisions (water years). WSF 843: 1936(M). WSP 1091: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

1.1 

1.5 

2.0 

3.O 

5.0 

8.0

710 

9O7 

1,220 

2,060 

4,300 

9,05O

1.6 

2.0 

3.O 

5.0 

8.0

895 

1,140 

2,030 

4,30O 

9,O5O

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4 

5

6

7

8

9

10

11

12

13

14

15

1.6

17

18

19

20

21

22

23

24

25

26 

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

768 

768

768 

764 

764

759

759

754

754

759

759

754

754

754

754

754

754

754

754

*759

759

759

754

754

759

759 

754

754

754 

754 

754

23,481

757

46,57O

Nov.

754 

75O

754 

754 

754

754

750

750

750

750

750

75O

754

750

754

764

768

768

817

907

858

807

797

788

783

783 

783

783

783 

783

23,250

775

46,120

Dec.

788 

783

773 

768 

773

773

768

768

768

764

764

764

764

764

768

*768

778

895

1,420

4,340

*8_,480

8,440

5,900

2,860

2,170

2,540 

2,220

1,730

1,500 

1,370

1,3OO

58,261

1,879

115,600

Jan.

1,240 

1,180

1,150 

1.140 

1,140

1,220

1,340

1,230

1,180

1,180

1,220

1,190

1,220

1,270

1,810

2.020

1,640

1,480

1,400

1,420

1,410

1,420

1,53O

1,420

1,370

*1,34O 

1,280

1,230

1,180 

1,160

1,140

41,150

1,327

81,620

Feb.

1,110 

1,110

1,100 

1,090 

1,090

1,O7O

1,060

1,O50

1,040

1,040

1,040

1,040

1,040

1,03O

1,020

1,000

1,010

1,000

1,010

1,020

1,730

*2.750

2,570

1,910

1,630

1,480 

*1,380

1,340

1,290

37,050

1,278

73,490

Mar.

1,240 

1,230

1,240 

1,250 

1,210

1,170

1,150

1,140

1,14O

1,140

1,120

1,110

1,110

1,110

1,100

1,100

1,110

1,120

*1,130

1,130

1,140

1,160

1,180

1,210

1,260

1.340 

1,300

1,280

1,290 

1,300

1,32O

36,830

1,188

73,050

Apr.

1,300

1,260

1.240 

1,240 

1,260

1,280

1,31O

1,33O

1,360

1,400

1,400

1,36O

1,37O

1,360

1,350

1,350

1,380

1,390

1,430

1,480

1,55O

1,580

1,640

1.700

1,650

1,600 

1,540

1,510

1,500 

1,490

42,610

1,420

84,520

May

1,480 

1,500

1,510 

1,730 

1.940

1,860

1,770

1,650

1,570

1,570

1,700

1,530

1,450

1.4OO

1,380

1,410

1,450

1,480

1,530

1,560

1,570

1,580

*1,590

1,530

1,490

1,470 

1,420

1,380

1.370 

1,380

1,370

47,620

1,536

94,450

June

1.340 

1,310

1,330 

1,300 

1,260

1,240

1,23O

1,220

1,230

1,24O

1,230

1,200

1,2OO

1,210

1,2OO

1,160

1,150

1,150

1,2OO

1,190

1,160

1,140

1,140

1,130

1,120

1,120 

1,120

1,120

1.110 

1,110

35,860

1,195

71,130

July

1.100 

1,090

1,090 

1,080 

1,070

1,070

1,06O

1,060

1,060

1,060

1,050

*1,05O

1,050

1,04O

1,040

1,040

1,040

1,040

1,030

1,030

1,030

1,030

1,030

1,040

1,030

1,020 

1,020

1,O2O

1,010 

1,010

1.000

32,390

1,O45

64,24O

Aug.

1.000 

1,OOO

1,000 

1,OOO 

999

993

993

993

999

999

993

993

987

987

987

987

987

981

981

981

987

987

981

981

975

975 

969

969

975 

975

969

30,583

987

60,660

Sept.

969 

969

963 

963 

963

963

957

957

951

951

951

951

957

957

951

951

951

951

957

951

945

945

940

940

940

.925 

935

935

935 

935

28,519

951

56,570

Calendar year 1955: Max 8,480 Min 750 Mean 925 Ac-ft 669,500

Water year 1955-56: Max 8,48O Min 750 Mean 1,196 Ac-ft 868,000

Peak discharge (base, 1,000 cfs). --Dee. 21 (11:30 D.m. ) 11.800 cfs (9.42 ft): Dec. 26 (~l D.m.)

3,000 cfs (3.90 ft); Jan. 16 (3 a.m.) 2,240 cfs (3.21 ft); Feb. 22 (8 p.m.) 2,980 cfs (3.88 ft);

May 5 (6:30 a.m.) 2,020 cfs (2.99 ft).

* Discharge measurement made on this day.
388 SACRAMENTO RIVER BASIN

McCloud River above Panther Creek, near McCloud, Calif.

Location. Lat 41°08'10", long 1S2°04'40", in SWij- sec. 22, T. 38 N., R. 2 W., 900 ft upstream from Panther Creek and 9 miles southeast of McCloud.

Drainage area. 420 sq mi, approximately. 

Records available. --April 1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,491.64 ft above mean sea level (levels by 

California Oregon Power Co.).

Extremes . Maximum discharge during year, 12,800 cfs Dec. 22 (gage height, 15.4 ft, from 

f loodmarks ) , from rating curve extended above 2,300 cfs on basis of slope-area determination of peak flow; minimum, 808 cfs Nov. 15.

1955-56: Maximum discharge, that of Dec. 22, 1955; minimum, that of Nov. 15, 1955.

Remarks . Records good except those for periods of no gage-height record, which are fair. 

Two small diversions above station for domestic and municipal use.

Cooperation. Water-stage-recorder graph and 10 discharge measurements furnished by 

California-Oregon Power Co.

Rating tables, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Sept. 16-30)

Oct. 1 to Feb. 22

800

880

1,860

4,700

10,100

Feb. 23 to Sept. 30

8.0 

13.2

2.2 

2.5 

3.0

5.7

985

1,120

1,360

2,960

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

844 

S44

840

840

840

832

*832

832

832

848

840

840

840

840

840

836

836

840

836

836

836

836

836

836 

836

844

836

836

*836

835 

835

25,970

838

51,510

Nov.

830 

830

825

825

825

820

820

*820

816

816

816

812

824

820

816

828

824

832

944

1,140

1,020

904

884

856 

848

840

836

836

836

832

25,575

852

50,730

Dec.

844 

844

840

832

844

840

832

S40

832

828

832

840

840

844

844

860

877

1,210

*2,250

5,340

10,000

*9,500

5,000

2,600 

2,400

2,700

2,200

1,800

1,600

1,500

1,500

63,913

2,062

126,800

Jan.

1,400 

1,400

1,400

1,400

*1,410

1,550

1,840

1,650

1,520

1,520

1,580

1,530

1,580

1,660

2,350

2.500

2,OSO

1,850

1,740

1,760

1,730

1,770

1,900

1,780 

1,700

1,660

1,600

1,530

1,470

1,430

1,590

51,680

1,667

102,500

Feb.

1,360 

1,340

1,320

1,320

1,300

1,290

1,270

1,260

1,250

1,230

1,230

1,230

1,220

1,220

*1,210

1,190

1,200

1.180

1,200

1,230

2,220

5.190

2,910

2,310 

2,010

1,810

1,710

1,650

1,580

44,440

1,532

88,150

Mar.

1,540 

1,500

1,520

1,540

1,500

1,440

1,410

1,400

1,400

1,400

1,580

1,560

1,560

1,560

*1.54Q

1,540

1,350

1,560

1,580

1,580

1,400

1,420

1,440

1,500 

1,560

1.630

1,580

1,550

1,550

1,560

1,580

45,050

1,455

89,520

Apr.

1,550 

1,510

1.480

1,490

1,520

1,520

1,550

1,580

1,600

1,660

1,660

1,610

1,610

1,610

1,590

1,590

1,610

1,650

1,670

1,750

1,800

1,830

1,890

1.940 

1,890

1,850

1,790

1,750

1,750

1,720

49,980

1,666

99,150

May

1,720 

1,750

1,760

1,980

2.180

2,120

2,040

1,910

1,840

1,830

1,940

1,800

1,710

1,660

*1,650

1,690

1,750

1,770

1,810

1,850

1,860

1,850

1,880

1,810 

1,760

1,750

*1,690

1,650

1.640

1,650

1,640

55,900

1,805

110,900

June

1.590 

1,560

1,560

1,550

1,500

1,470

1,450

1,450

1,460

1,460

1,440

1,420

1,410

1,440

1,410

1,580

1,560

1,560

1,420

1,400

1,550

1,540

1,520

1,520 

1,500

1,500

1,500

1,500

1,280

1,270

42,170

1,406

85,640

July

1,260 

1,260

1,240

1,240

1,240

1,240

1,250

1,220

1,220

1,220

1,210

1,210

1,210

1,200

1,190

1,190

1,190

1,180

1,180

1,180

1,180

1,180

1,180

1,180 

1,180

1,180

1,170

1,160

1,160

*1,160

1,160

37,200

1,200

75,790

Aug.

1.160 

1,150

1,150

1,140

1,140

1,140

1,140

1,140

1,140

1,130

1,130

1,150

1,150

1,150

1,130

1,130

1,150

1,150

1,150

1,120

1,120

*1,120

1,120

1,120 

1,110

1,110

1,110

1,110

1,110

1,110

1.100

34,960

1,128

69,340

Sept.

1.100 

1,100

1,090

1,090

1,080

1,070

1,070

1,070

1,070

1,060

1,050

1,050

1,050

1,050

1,040

1,050

1,030

1,030

1,040

1,050

1,030

1,020

1,020

1,020 

1,020

1,020

1,010

1,000

1,000

1,000

51,540

1,045

62,160

Calendar year 1955: Max - Mln - Mean - Ac-ft

Water year 1955-56: Max 10,000 Mln 812 Mean 1,388 Ac-ft 1,008,000

Peak discharge (base. 1,200 efs). Nov. 20 (7 p.m.) 1,250 cfs (2.87 ft); Dec. 22 (about 12:50 a.m.) 

12,800 cfs (15.4 ft); Jan. 15 (12 p.m.) to Jan. 16 (2 a.m.) 2,750 cfs (5.57 ft); Feb. 22 (7 p.m.) 

5,550 cfs (6.26 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 50 to Nov. 7, Dec. 21 to Jan. 2; discharge estimated on basis of 

recorded range In stage, floodmark, and records for station near McCloud.
SACRAMENTO RIVER BASIN 389

McCloud River above Shasta Lake, Calif.

Location. Lat 40°57'30", long 122°13'05", in NWi; sec. 28, T. 36 N. , R. 3 W., on right 

bank just upstream from Shasta Lake, 0.2 mile downstream from Big Bollibokka Creek and 

11.3 miles east of Lamoine.

Drainage area. 606 sq mi.

Records available. October 1945 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,100.00 ft above mean sea level (levels by 

Bureau of Reclamation).

Average discharge. 11 years, 1,653 cfs (1,197,000 acre-ft per year).

Extremes . Maximum discharge during year, 45,200 cfs Dec. 22 (gage height, 28.20 ft), from 

rating curve extended above 6,000 cfs on basis of slope-area determination of peak 

flow; minimum, 874 cfs Nov. 15.

1945-56: Maximum discharge, that of Dec. 22, 1955; minimum, 820 cfs Jan. 3, 1950.

Revisions. The maximum discharge for the water year 1953 has been revised to 21,400 

cfs Jan. 9, 1953 (gage height, 22.55 ft), superseding figure published in WSP 1285.

Remarks. Records excellent. Some very small diversions above station for domestic use.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 3O

10.9

11.0

12.0

14.0

940

1,680

3,670

17.0 

2O.O 

23.0 

27.0

7,820 

14,200 

23,OOO 

39,300

11.4

12.0

1,110

1,570

3,530

7,820

Note. Same as 

preceding table 

above 17.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

904 

904

904

904

904

898

892

892

892

910

910

910

904

904

904

904

898

898

898

904

898

898

892

898

898

910

898

898

892

892

886

27,898

900

55,330

Nov.

*892 

892

892

892

898

892

892

886

880 880"

880

886

910

892

880

910

898

934

1,300

2,580

1,740

1,190

1,110

1,060

1,030

1,000

994

1,000

1,000

988

30,878

1,029

61,250

Dec.

1,020 

1,010

982

958

988

1,070

1,040

1,080

1,270

1,160

1,120

1,130

1,130

*1,120

1,100

1,180

1,270

3,900

12,200

26,700

36,100

*33,900

21,000

10,400

7,090

8,180

7,220

5,260

4,260

5,710

5,540

201,888

6,513

400,400

Jan.

5,280 

5,100

2,950

3,080

5,520

4,020

6,870

5,890

4,340

4,150

4,420

4,020

4,000

4,910

8,950

7,810

5,560

4,580

5,870

5,850

5,790

5,940

4,590

4,000

5,670

5,600

5,520

*5,320

5,080

2,880

2.750

151,650

4,246

261,100

Feb.

2,590 

2,480

2,410

2,560

2,520

2,270

2,220

2,170

2,140

2,110

2,080

2,070

2,060

2,040

2,000

1,960

1,960

1,920

1,990

2,780

12,400

16,800

11,000

6,160

4,640

5,820

5,580

5,120

2,970

108,220

5,752

214,700

Mar.

2,850 

2,750

2,750

2,850

2,710

2,540

2,420

2,360

2,350

2,300

2,250

2,190

2,160

2,150

2,120

2,100

2,130

2,160

2,220

2,220

2,220

2,250

2,290

2,570

2,470

2,580

2,510

2,400

2,560

2,560

2,370

75,680

2,577

146 , 100

Apr.

2,520 

2,240

2,180

*2,160

2,160

2,180

2,200

2,230

2,260

.2,530

2,550

2,280

2,270

2,240

2,210

2,180

2,220

2,220

2,290

2,580

2,470

2,550

2,580

2.620

2,560

2,510

2,410

2,550

2,520

2,290

69,540

2,518

157,900

May

2,270 

2,290

2,510

2,550

2,860

2.900

2,820

2,610

2,490

2,520

2,720

2,550

2,560

2,280

2,220

2,230

2,270

2,290

2,520

2,540

2,550

2,520

2,550

2,260

*2,190

2,140

2,090

2,040

2,000

2,010

1,990

72,880

2,551

144,600

June

1.950 

1,880

1,890

1,870

1,820

1,760

1,730

1,710

1,710

1,720

1,700

1,670

1,660

1,700

1,690

1,630

1,600

1,590

1,670

1,660

1,590

1,560

1,550

1,540

1,510

1,500

1,500

1,490

1,480

1.470

49,780

1,659

98,740

July

1,470 

1,470

1,450

1,450

1,420

1,410

1,410

1,400

1,590

1,390

*1,390

1,380

1,580

1,360

1,550

1,340

1,540

1,550

1,350

1,320

1,520

1,510

1,290

1,290

1,290

1,290

1,280

1,_27Q1,270

1,270

1,270

41,910

1,552

85,130

Aug.

1.270 

1,260

1,250

1,250

1,250

1,240

1,240

1,230

1,230

1,230

1,230

1,230

1,220

1,220

1,220

1,220

1,210

1,210

1,220

1,210

1,210

1,200

1,200

1,190

1,190

1,190

1,190

1,190

1.180

1,180

1,180

37,740

1,217

74,860

Sept.

1.180 

1,180

1,170

1,170

1,170

1,170

1,160

1,160

1,160

1,150

1,150

1,150

1,150

1,150

1,140

1,140

1,140

1,140

1,160

1,150

1,140

1,140

1,140

1,140

1.150

*1,140

1,140

1,140

1,150

1,140

34,520

1,151

68,470

Calendar year 1955: Max 36,100 Mln 800 Mean 1,680 Ao-ft 1,217,000

Water year 1955-56: Max 36,100 Mln 880 Mean 2,406 Ao-ft 1,747,000

Peak discharKe (base, 4,500 cfs). Dec. 22 (2:30 a.m.) 45,200 cfs (28.20 ft): Jan. 7 (6 D.m.)

8,000 cfs (17.10 ft); Jan. 15 (4 p.m.) 10,700 cfs (18.47 ft); Feb. 22 (12 m.) 17,700 cfs (21.29 ft).

* Discharge measurement made on this day.

493801 O - 59 - 26
390 SACRAMENTO RIVER BASIN

Shasta Lake near Redding, Calif.

Location. Lat 40°43'10", long 122°25'10", In Mj sec. 15, T. 33 N., R. 5 W. , In Shasta 

Dam on Sacramento River near right bank, 2 miles downstream from Squaw Creek and 

9.5 miles north of Redding.

Drainage area.--6.665 sq ml (excluding Goose Lake basin). 

Records available.--November 1942 to September 1956.

Gage. Water-stage recorder. Datum of gage Is at mean sea level (levels by Bureau of 

Reclamation). Prior to July 10, 1944, staff gages at various sites near dam at same 

datum.

Extremes. Maximum contents during year, 4,507,000 acre-ft May 13 (elevation, 1,065.48 

ft); minimum, 2,288,300 acre-ft Nov. 17 (elevation, 973.34 ft).

1942-56: Maximum contents, that of May 13, 1956; minimum since Initial season of 

normal operation, 916,200 acre-ft Sept. 25, 26, 1944 (elevation, 877.31 ft).

Remarks. Reservoir Is formed by concrete gravity-type dam completed In 1949; regulation 

of discharge from reservoir began Dec. 30, 1943. Usable capacity, 4,377,000 acre-ft 

between elevations 737.75 ft (bottom of lowest set of river outlets) and 1,065.0 ft 

(top of drum-type spillway gates) above mean sea level. 115,700 acre-ft Is not available for release. All water passes down Sacramento River, some first passing through 

powerplant at dam. Records Including extremes, show total contents at 12 p.m.

Cooperation. Record of contents furnished by Bureau of Reclamation.

Capacity table, water year 1955-56 (elevation, In feet, and 

contents. In acre-feet)

973

980

990

1,000

2,281,900

2,416,000

2,616,600

2,828,500

1,020

1,040

1,065.5

3,286,900

3,792,600

4,507,500

Contents, In thousands of acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Kl

Oct.

2,450.5

2,445.8 

2,441.1 

2,436.8 

2,433.0

2,429.3 

2,423.1 

2,414.1 

2,407.3 

2 , 403 . 9

2,399.8 

2,396.5 

2,394.0 

2,389.8 

2,384.5

2,381.8 

2,378.3 

2,375.8 

2,373.1 

2,370.4

2,367.7 

2,364.8 

2,361.4 

2,359.2 

2,356.8

2,353.7 

2,350.8 

2,346.8 

2 , 340 . 7 

2,334.9 

2,332.3

975.66 

-123,000

Nov.

2,329.2 

2,326.6 

2,323.9 

2,321.2 

2,318.2

2,316.3 

2,313.1 

2,310.0 

2,307.4 

2,304.4

2,301.3 

2,297.9 

2,297.8 

2,294.0 

2,289.8

2,289.8 

2,288.3

2,289.1 

2,297.4 

2,326.7

2,336.8 

2,339.9 

2,344.7 

2,347.7 

2,350.2

2,351.6 

2,352.7 

2,354.3 

2,355.8 

2,357.1

 _ 

976.96 

+24,800

Dec.

2,361.0

2,364.3 

2,366.6 

2,368.9 

2,376.8

2,386.3 

2,391.1 

2,400.0 

2,410.6 

2,416.8

2,421.9 

2,427.4 

2,432.6 

2,436.6 

2,441.5

2,449.0 

2,461.6 

2,525.4 

2,668.5 

2,845.3

3,077.0 

3,342.6 

3,512.0 

3,557.8 

3,592.0

3,617.1

3,603.5 

3,569.8 

3,525.4 

3,472.4 

3,416.1

1,025.30 

tt+l£59

Jan.

3,391.2 

3,336.5 

3,279.7 

3,247.3 

3,240.1

3,241.3 

3,288.1 

3,313.9 

3,305.7 

3,286.9

3,267.7 

3,244.9 

3,238.0

3,294.2 

3,409.1

3,455.7

3,435.1 

3,431.9 

3,427.7 

3,424.7

3,427.2 

3,430.9 

3,439.1 

3,439.1 

3,433.9

3,428.4 

3,425.2 

3,414.3 

3,398.3 

3,379.2 

3,362.0

1,023 . 10 

-54,100

Feb.

3,347.4 

3,336.5 

3,330.4 

3,328.0

3,330.4

3,332.1 

3,338.9 

3,341.6 

3,345.2 

3,347.9

3,351.6 

3,359.6 

3,359.1 

3,358.4 

3,360.3

3,362.8 

3,368.2 

3,373.1 

3,387.0 

3,433.4

3,589.9 

3,715.1 

3,732.9

3,707.3 

3,701.2

3,652.7 

3,601.2 

3,574.9 

3,548.7

1,030.60 

+186, 700

Mar.

3,520.9 

3,501.7 

3,496.5

3,502.0 

3,515.8

3,528.7 

3,541.3 

3,553.2 

3,564.7 

3,576.6

3,587.4 

3,596.6 

3,604.8 

3,612.4 

3,619.6

3,628.7 

3,639.5 

3,651.9 

3,664.0 

3,677.8

3,692.1 

3,708.3 

3,725.8 

3,745.0 

3,766.1

3,786.5 

3,808.5 

3,829.4 

3,848.1 

3,866.2 

3,884.5

1,043.45 

+335,800

Apr.

3,905.7

3,923.5 

3,939.8 

3,955,0 

3,970.2

3,984.2 

4,000,3 

4,014,3 

4,030,0 

4,048.5

4,067.3 

4,084,8 

4,099.5 

4,116,3 

4,133.1

4,147.9 

4,163,7 

4,179.2 

4,195.9 

4,214.6

4,232.5 

4,251.7 

4,273.4 

4,293.8 

4,312.6

4,330.2 

4,347.0 

4,363.2 

4,380.3 

4,393.1

 _

1,061.60 

+508,600

May

4,406.5

4,420.8 

4,435.4 

4,455.9 

4,475.1

4,491.9 

4,500.7 

4,499.6 

4,498.4 

4,503.7

4,506.7 

4,506.1 

4,507.0

4,506.7 

4,506.4

4,505.8 

4,505.8 

4,505.8 

4,505.8 

4,502.2

4,499.0 

4,498.1 

4,496.6 

4,495.7 

4,497.5

4,496.3 

4,496.6 

4,498.1 

4,500.7 

4,505.2 

4,502.2

1,065 . 32 

+109,100

June

4,502.2

4,501.3 

4,500.4 

4,497.8 

4,495.1

4,493.0 

4,491.9 

4,490.7 

4,488.9 

4,488.0

4,487.4 

4,486.8 

4,485.1 

4,483.9 

4,481.5

4,475.1 

4,469.5 

4,466.8 

4,466.5 

4,465.0

4,463.9 

4,461.5 

4,457.4 

4,450.1 

4,446.3

4,443.9 

4,441.0 

4,436.6 

4,431.6 

4,423.7

__ _____

1,062 . 65 

-78,500

July

4,414.1

4,409.1 

4,404.4 

4,399.8 

4,394,3

4,389.0 

4,378.9 

4,367.8 

4,359.7 

4,352.5

4,343.8 

4,332.2 

4,322.1 

4,310.6 

4,298.2

4,288.1 

4,278.0 

4,268.3 

4,259.7 

4,251.4

4,238.3 

4,224.0 

4,212.6 

4,203.5 

4,194.2

4,184.6 

4,173.8 

4,160.0 

4,145.4 

4,134.2 

4,125.2

1,052.23 

-298,500

Aug.

4,118.2

4,108.5 

4,099.5 

4,086.4 

4,074.2

4,064.5 

4,056.5 

4,048.2 

4,039.3 

4,030.5

4,019.0 

4,005.5 

3,997.0 

3,987.7 

3,980.3

3,972.4 

3,964.0 

3,951.4 

3,938.4 

3,928.9

3,920.8 

3,912.5 

3,904.6 

3,894.7 

3,881.3

3,867.6 

3/858.5 

3,850.2 

3,841.1 

3,832.9 

3*824.9

1,041.22 

-300,300

Sept.

3,816.4

3,805.8 

3,795.8 

3,787.8 

3,780.1

3,772.5 

3,764.3 

3,755.3 

3,743.4 

3,735.0

3,727.4 

3,720.9 

3,713.5 

3,705.7 

3,694.2

3,684.0 

3,675.7 

3,668.7 

3,662.5 

3,655.5

3,647.5 

3,635.6 

3,624.8 

3,618.4 

3,610.6

3,602.2 

3,594.8 

3,587.6 

3,579.7 

5.568.5

1,031 -.38 

-256,400

Calendar year 1955.................... t +221,900

Water year 1955-56.................... t +1,113,200

t Elevation, in feet, at end of month, 

t Change in contents in acre-feet, 

tt Expressed In thousands.
SACRAMENTO RIVER BASIN 391

Sacramento River at Keswiok, Calif.

Location. Lat 40°36'10", long 122°26'35", in NW^ sec. 28, T. 32 N., R. 5 W., on right 

bank 0.6 mile downstream from Keswick Dam, 0.6 mile upstream from Middle Creek, and 

10 miles downstream from Shasta Dam.

Drainage area. 6,710 sq mi, approximately, excluding Goose Lake basin.

Recordsavailable.--October 1938 to September 1956.

sage.--water-stage recorder. Datum of gage is 479.81 ft above mean sea level, datum of 

1929. Prior to Oct. 1, 1939, at site 1.5 miles upstream at datum 20.2 ft higher and 

Oct. 1, 1939, to Apr. 30, 1942, at site 1.5 miles upstream at datum 15.2 ft higher.

Average discharge. 16 years (1939-41, 1942-56), 8,256 cfs (5,977,000 acre-ft per year), 

adjusted, except for evaporation, prior to 1947.

Extremes. Maximum discharge during year, 53,800 cfs Feb. 24 (gage height, 27.37 ft); minimum daily, 3,000 cfs Apr. 20-29.

1938-56: Maximum discharge, 186,000 cfs Feb. 28, 1940 (gage height, 47.2 ft, site 

and datum then in use), from rating curve extended above 75,000 cfs on basis of peak 

discharge at Kennett plus 4,000 cfs estimated inflow; minimum, 154 cfs May 15, 1948.

Remarks. Records excellent except those for periods of indefinite stage-discharge relation, which are good. Flow regulated by Shasta Lake beginning Dec. 30, 1943 (see preceding page). Diurnal fluctuations from Shasta powerplant reregulated by Keswick Reservoir (capacity, 4,170 acre-ft between normal operating elevations 579.0 and 586.0 ft) 

and powerplant. No diversions for irrigation between Shasta Dam and station at Keswick. 

Records of chemical analyses for the water year 1956 are given in WSP 1453.

Cooperation.--Six discharge measurements furnished by Bureau of Reclamation.

Rating tables, water year 1955-56, except periods of indefinite stage-discharge 

relation (gage height, in feet, and discharge, In cubic feet per second)

7.7 

8.0 

9.0

Oct. 1 to Nov. 21, 

Apr. 3 to Sept. 30 

2,960 10.0 

3,180 12.0 

4,050 16.0

5,080

7,540

14,600

7.2

8.0

9.0

12.0

NOV. 22 to Apr. 2

3,040

3,720

4,670

8,300

16.0

20.0

24.0

28.0

14,800

24,100

37,500

57,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8 

9

10

11

12

15

14

15

16

17 

18

19

20

21

22

23

24 

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

(t)

(tf)

Oct.

5,640 

5,640

5,640

5,620 

5,620

5,780

5,820

5.840 

5,780

5,820

5,840

5,360

5,240

5,260

5,240

5,240

 5,240 

5,240

5,240

5,260

5,220

5,240

5,240

5,280 

5,240

5,260

5,270

5,260

5,240 

5.210

*5i21G

168,030

5,420

333,300

-123,000

6,340

Nov.

5.210 

4,770

5,110

5,140 

5,140

5,120

5,140

5,070 

4,970

5,190

4,980

4,960

4,940

5,000

4,980

4,270

4,280 

4,010

4,070

4,160

4,080

4,110

4,180

4,170 

4,130

4,100

4,090

4,150

4,040 

5,690

137,250

4,575

272,200

+24,800

2,660

Dec.

5,580 

*5,200

5,150

5,140 

5,210

5,290

5.18Q

5,170 

3,150

3,140

5,130

3,120

5,110

3,110

5,120

3,110

3,140 

5,940

8,280

6,680

9,570

12,200

17 , 100

29,800 

29,600

55,900

48,400

48,300

48,000 

47,200

46,900

445,920

14,380

884,500

* +1,059

1,750

Jan.

34 , 600 

46,600

 45,200

56,500 

28,900

28,100

2 8, 600

28,000 

51,400

57,000

56,900

55,800

29,600

14,000

12,500

26,300

46.800 

31,100

28,700

29,100

25,700

28,600

29,100

29,000 

29,000

29,000

29,400

29,000

28,600 

27,500

24,800

945,200

50,490

tl,875

-54,100

1,250

Feb.

 21,500 

18,500

15,200

12,400 

10,100

9,840

8,500

8,500 

8,500

8,290

8,240

8,240

8,190

8,150

8,160

7,710

6.260 

6,260

6,590

9,890

16 , 800

27,700

48,600

51,200 

38,600

50,300

48,400

35,800

32,000

543,420

18,740

tl,078

US 6,700

3,150

Mar.

 51.000 

25,800

19,600

14,100 

9,910

9,840

8,990

8,080 

8,080

8,050

8,020

8,020

8,020

7,980

7,890

7,040

6,150 

5,160

5,200

5,180

5,150

5,100

5,120

8,110 

6,180

5,000

6,000

5,000

5,000 

5,950

5.120

280,820

9,059

557,000

H335,800

5,950

Apr.

4.420 

 4,400

4,310

4,520 

4,540

4,510

4,240

4,400 

4,280

4,000

4,000

4,000

5,990

4,000

4,010

 4,000

4,010 

4,000

5,760

5.000

3,000

5,000

5,000

5,000 

5,000

5,000

3,000

5,000

5,000 

5,750

112,540

3,751

223,200

f508,600

8,520

May

 4,010 

4.000

4,666

4,000 

6,070

8,020

10,500

14.500 

13)500

12,500

14,000

15,500

12,100

12,000

 12,100

12,000

12,000 

12,000

12,800

13,900

13,000

12,000

12,000

10,000 

10,000

9,530

7,990

8,000

8,000 

8,540

8 980 °*

315,540

10,170

625,500

1-109,100

12,580

June

 8,690 

8,690

8.800

8^710 

8,790

8,720

7,970

7,950 

8,050

7,490

7.110

7,126

7,140

 7,140

7,140

7,120

7,120 

7,190

7,200

7,190

7,160

7,180

7,160

7,160 

7,180

7,180

7,410

8,040

8,040 

8,050

229,850

7,662

455,900

-78,500

18,290

July

8,030 

 8,000

8,030

7.970 

8,626

^8,130

8>4SO

8/490 

8.5SJ.O

8,740

9,570

9.600

9,5JiO

9,570

9,540

 9,560

9,560 

9,560

9,560

9,570

9,560

9,560

9,600

9,590 

9,600

9,600

9,600

9,600

9,590

9^480

283,440

9,143

562,200

h 2 98, 500

21,080

Aug.

8,620 

 8,680

8,690

8,720 

8,710

8,710

8,720

8,720 

8,760

8,740

8,740

8,760

8,760

8,760

8,770

8,720

8,740 

8,740

8,760

 8,740

8,740

8,740

8,760

8,770 

8,740

8,720

8,760

8.790

8,550 

8,490

8.500

269,920

8,707

555,400

 300, 300

16,910

Sept.

8,070 

8,090

8,070

8,100 

 8,100

8,100

8,100

8,100 

8,100

8,100

8,110

8,100

8,100

8,110

8,110

8,110

8,100 

8,100

8,100

8,100

8,100

8,100

8,100

8,150 

8,130

8,130

8,150

8,110

8,110 

8,110

243,120

8,104

482,200

-256,400

12,200

Adjusted for evaporation and change in reservoir contents

Mean 

Ao-ft

3,523 

216,600

5,037 

299,700

Calendar year 1955: 

Water year 1955-56:

31,650 

*1,945

29,630 

*1,822

22,040 

tl,268

14,650 

899,800

12,440 

740,300

12,150 

747,200

6,650 

595,700

Observed

Max 48,400 Min 3,090 Mean 7,303 Ac-ft *5,287 

Max 51,200 Min 3,000 Mean 10,860 Ac-ft *7,884

4,632 

284,800

4,098 

252,000

4,000 

238,000

Adjusted

Mean 7,750 Ac-ft *5,611 

Mean 12,550 Ac-ft *9,109

 Discharge measurement made on this day.

t Change in contents, in acre-feet, in Shasta Lake.

* Expressed in thousands.

tt Evaporation in Shasta Lake, in acre-feet, furnished by U. S. Bureau of Reclamation. 

Note. Stage-discharge relation indefinite Mar. 26 to Apr. 2, Apr. 8 to May 7, May 24-31; discharge estimated on basis of release from Keswick Dam.
392 SACRAMENTO RIVER BASIN

Clear Creek at French Gulch, Calif.

Location.--Lat 40°41'40", long 122°38'10", In NE^ sec, 27, T. 33 N., R. 7 W., on right 

bank 1,200 ft downstream from Right Fork, 0.3 mile south of French Gulch, and 15 miles 

northwest of Redding.

Drainage area.--115 sq ml.

Records available.--July 1950 to September 1956.

Average discharge.--6 years, 231 cfs (167,200 acre-ft per year).

Gage.--Water-stage recorder. Altitude of gage Is 1,320 ft (from topographic map).

Extremes.--Maximum discharge during year, 7,050 cfs Dec. 22 (gage height, 10.49 ft), from 

rating curve extended above 4,600 cfs on basis of slope-area determination of peak flow; 

minimum daily, 10 cfs Sept. 30.

1950-56: Maximum discharge, that of Dec. 22, 1955; minimum, 3.9 cfs Sept. 6, 7, 8, 

1955.

Remarks.--Records good except those for periods of indefinite stage-discharge relation or 

no gage-height record, which are fair. No large diversions above station.

Revisions.--WSP 1285: Drainage area.

Discharge, In cubic feet per Second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

12

IS

13

13

12

13

*13

13

13

17

20

17

16

16

16

15

15

15

16

17

18

17

17

16

16

18

19

19

18

18 

18

488

15.7

968

Nov.

20ro

20

20

22

22

21

21

20

22

24

26

32

33

30

32

32

47

115

*584

237

98

85

71

64

59

63

71

73

66

1,850

61.7

3,670

Dec.

79

73

60

51

TO

157

127

104

190

144

127

146

138

127

120

129

176

1,020

2,640

2,420

*2, 120

*5,690

3,31ff

1,930

1,580

1,840

1,300

930

3700

3550 

a480

28,518

920

56,560

Jan.

a680

3600

*a500

555

702

1,230

2,870

1,900

1,240

1,040

1,080

*963

942

1,850

*5,940

*2,920

1,850

1,330

1,060

1,050

1,030

1,080

1,310

1,150

990

930

865

755

671

599

539

38,221

1,233

75,810

Feb.

485

436

405

375

350

328

307

288

274

261

251

244

239

232

225

217

212

204

214

484

3,650

2,900

2,030

1,340

997

782

659

588

546

19,523

673

38,720

Mar.

514

504

504

518

454

454

415

391

385

379

373

359

350

350

345

342

356

379

394

370

359

367

373

388

400

*388

356

334

320

317

509

12,087

390

23,970

Apr.

291

2T4

259

252

254

252

252

252

252

269

298

276

274

252

242

235

228

231

238

245

250

250

250

250

238

231

219

208

199

195

7,416

247

14,710

May

*193

191

193

204

202

254

2J6.

250

235

240

2-40

226

213

199

191

182

177

175

169

165

156

150

146

136

130

126

124

124

T2~8 122

126

5,643

182

11,190

June

126 T2~2"

118

116

112

112

110

104

92

83

*79

76

76

78

79

79

72

70

76

65

59

56

56

56

54

54

49

44

40

36

2,349

78.3

4,660

July

36

43

45

45

44

43

40

36

35

33

31

30

27

28

29

28

27

27

26

26

25

25

24

24

23

23

23

22

22

21

?T

932

30.1

1,850

Aug.

20- 20

20

20

20

20

19

18

18

 17

17

17

17

17

17

16

16

16

16

15

15

15

15

15

14

14

14

14

14

14

!?.

513

16.5

1,020

Sept.

13

13

13

13

12

12

12

312

312

313

 15

16

17

17

17

17

17

318

320

*22

19

15

14

13

13

13

13

12

11

10

434

14.5

861

Calendar year 1955: Max 5,690 Min 4.3 Mean 147 Ac-ft 106,700

Water year 1955-56: Max 5,690 Min 10 Mean 322 Ac-ft 234,000

Pesk dlschsrge (bsse. 1.500 cfs).--Dee. 19 (8 p.m.) 3,840 cfs (8.08 ft); Dec. 22 (6:30 3.m.) 7,050 

cfs (10.49 ft); Dec. 25 (12 p.m.) 2,080 cfs (5.58 ft); Jsn. 7 (7 a.m.) 3,310 ofs (7.08 ft); Jan. 15 

(2 p.m.) 4,560 cfs (8.35 ft); Feb. 21 (3 p.m.) 4,960 cfs (8.72 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

station near Igo.

Note. Stsge-dischsrge relation indefinite July 14 to Sept. 7, Sept. 11-17, 20-30; discharge estimated on basis of 3 discharge measurements and records for station near Igo.
SACRAMENTO RIVER BASIN 393

Clear Creek near Igo, Calif.

Location. Lat 40°30 I 50", long 122°31'20", In NE^NE^- sec. 27, T. 31 N. , R. 6 W., on left 

bank at highway bridge on Redding-Igo road, 1.0 mile northeast of Igo, 8 miles southwest of Redding, and 10.5 miles upstream from mouth.

Drainage area. 228 sq mi.

Records available.--October 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 700 ft (from topographic map).

Average discharge. 16 years, 403 cfs (291,800 acre-ft per year); median of yearly mean 

discharges, 340 cfs (246,000 acre-ft per year).

Extremes.--Maximum discharge during year, 24,500 cfs Dec. 21 (gage height, 13.75 ft), from 

rating curve extended above 18,000 cfs on basis of slope-area determination of peak 

flow; minimum, 19 cfs Sept. 7.

1940-56: Maximum discharge, that of Dec. 21, 1955; minimum, 8.6 cfs Sept. 4, 6, 7, 

1950.

Remarks. Records good. Small diversions above station.

Revisions (water years) . WSP 1345: Drainage area. WSP 1395: 1941(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. In cubic 

feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Jan. 7 Jan. 7 to Sept. 30

2.0

2.1 

2.3 

2.5 

2.9 

3.4

20

25

42

72

171

355

4.0 

5.0 

6.0 

7.0 

8.0 

10.0

680

1,480

2,740

4,500

6,740

12,200

5.0 

6.0 

7.0 

9.0

11.0

870

1,940

3,840

9,000

15,200

2.4 

2.7 

3.0 

3.5 

4.0 

4.5

20

56

120

310

550

830

7.0

9.0

11.0

1,220

2,440

4,380

9,300

15,200

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

22

21

2T 

22

22

22

22

22

22

25

30

*29

27

26

26

26

25

25

26

28

30

50 

28

28

28

30

30

31

3T

30

31

817

26.4

1,620

NOV.

32

3T

34 

34

37

39

*37

35

34

32

32

33

43

51

50

60

62

103

200

799

436

186 

190

165

133

115

117

125

125

112

3,485

116

6,910

Dec.

120

125

105 

93

23?

552

271

223

347

260

216

223

220

202

190

206

287

2,950

8,100

6,860

*10,200

14.500 

7,310

3,740

3,660

3,670

2,420

*1,740

1,350

1,110

942

72,424

2,336

143,700

Jan.

1,440

1,210

1.000 

1,250

1,480

1,900

5,410

3,480

2,220

2,180

2,410

*1 , 980

1,880

4,200

*7.100

5,320

3,390

2,330

1,890

1,880

1,810

1,830 

2,060

1,860

1,760

1,780

1,960

1,680

1,410

1,210

1,070

72,380

2,335

143,600

Feb.

949

858

794 

752

710

666

638

606

580

555

540

525

510

495

480

460

450

435

537

4,120

*15.500

7,380 

4,830

2,970

2,460

1,890

1,530

1,380

1,270

-

52,670

1,816

104,500

Mar.

1.150

1,070

1,040 

1,030

970

886

*818

782

752

734

710

682

666

650

633

622

622

644

655

650

633

644 

638

650

672

655

616

590

565

560

550

22,519

726

44,670

Apr.

535

510

*485 

470

485

465

465

460

465

475

B3o" 550

510

485

475

455

445

440

440

450

465

470 

470

470

465

455

435

415

396

386

14,002

467

27,770

May

378

373

378 

410

415

500

545

495

*460

480

475

440

415

391

373

364

350

350

337

324

306

296 

292

278

261

253

241

237

233" 229

229

11,108

358

22,030

June

217 202"

198 

*191

184

180

173

166

162

152

146

142

136

136

133

130

123

117

133

130

115

106 

101

96

93

89

85

*89

85

82

4,092

136

8,120

July

85

91

1!87

85

80

78

76

74

70

69

69

76

72

67

62

56

53

52

50

47 

*46

44

43

42

43

40

40

393-9

1,959

63.2

3,890

Aug.

38

36

39 

40

30

40

40

36

35

33

30

29

31

31

31

30

30

29

28

28

28

27 

*26

26

26

24

25

25

24

23

24

952

30.7

1,890

Sept.

24

23

23 

22

22

21

20

21

23

25

26

27

28

28

27

27

*26

26

29

35

35

31 

26

24

23

22

23

22

22

22

753

25.1

1,490

Calendar year 1955: Max 14,500 Win 17 Mean 351 Ao-ft 254,100

Water year 1955-56: Max 14,500 Mln 20 Mean 703 Ac-ft 510,200

e. 5.600 ofsK Dee. 19 (2:50 p.m.) 11.100 cfs (9.66 ft); Dec. 21 (9 p.m.)

j Dec. 25 (6 p.m.) 4,670 cfs (7.37 ft); Jan. 7 (3:30 a.m.) 6,580 cfs (7.95 ft);

,080 cfs (8.53 ft); Feb. 21 (2 p.m.) 19,600 cfs (12.36'ft).

Peak discharge (base 

24,500 cfs (13.75 ft); 

Jan. 15 (1:30 p.m.) 8, - v _. --i, -~

* Discharge measurement made on this day.
394 SACRAMENTO RIVER BASIN

Cow Creek near Millvllle, Calif.

Location. Lat 40°30'20", long 122°13'55", in NE^NW^ sec. 32, T. 31 N. , R. 3 W. , on right 

bank 4.2 miles southwest of Millville and 4.3 miles downstream from Little Cow Creek.

Drainage area.--427 sq mi.

Records available.--October 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 400 ft (from topographic map).

Average discharge.--? years, 708 cfs (512,600 acre-ft per year).

Extremes. Maximum discharge during year, 33,000 cfs Jan. 15 (gage height, 19.06 ft); minimum; 16 cfs Oct. 6.

1949-56: Maximum discharge, 45,200 cfs Dec. 27, 1951 (gage height, 21.55 ft), from 

rating curve extended above 15,000 cfs on basis of logarithmic plotting and velocityarea study; minimum, 5.0 cfs Aug. 11, 1955.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Numerous small diversions above station for irrigation.

Revisions (water years).--WSP 1345: 1951.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 24 to Jan. 7)

Oct. 1 to Dec. 6 Dec. 7 to Sept. 30

1.8 

2.0 

2.3 

2.6 

3.0 

3.5

83

135

231

410

4.0 

5.0 

7.0 

9.0 

12.0

635

1,200

2,890

5,460

10,900

2.1 

2.5 

3.0 

3.5 

4.0

33

90

202

372

590

5.0

7.0

9.0

12.0

17.0

1,180

2,890

5,460

10,900

24,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

E8

30

26

28 

32

24

26

33

36

44

55

50

43

41

40

40

38

37

43

53

49

49

52 

*49

48

67

68

67

64

62

61

1,383

44.6

2,740

Nov.

Hi- 54

ss

65 

72

77

71

67

64

61

65

71

93

124

126

152

168

264

629

*7.230

3,350

635

1,030 

1,120

567

378

312

268

234

212

17,671

589

35,050

Dec.

364

398

305

291 

2, f50-

9,210

1,420

1,160

3,370

1,060

701

*568

468

401

345

aSOO

a4,000

a6,000

a9,000

a5,400

a3,500

8,880

12.400 

4,330

2,790

a8,000

a5,000

2,570

1,840

1,520

1,360

100,031

3,227

198,400

Jan.

2,470

1,960

1,440

a2,000 

*2,810

2,040

6,320

3,910

2,340

3,370

2,320

1,510

4,150

*a!5,000

22.600

*5,980

3,500

2, HO

2,740

6,060

4,270

7,400

5,300 

3,360

4,430

4,890

3,180

2,410

1,890

1,600

*1.560

135,380

4,367

268,500

Feb.

1,190

1,080

1,000

938

884

818

767

718

680

655

635

620

600

576

550

509 522"

514

550

758

a2,500

a8,000

3,230 

1,920

1,640

1,430

1,220

*1,100

1,160

36,764

1,268

72,920

Mar.

956

872

836

1.450 

1,260

878

784

745

706

660

625

586

576

558

536

522

518

518

518

518

518

518

518 

532

554

563

536

514

504

514

536

20,409

658

40,480

Apr.

514

482

464

447 

44T

451

455

464

*451

486

532

554

581

563

518

491

491

478

504

532

568

568

605 

645

635

650 625"

605

581

558

15,945

532

31,630

May

550

540

5§G

1,530 

2,390

2,820

2,600

1,640

1,310

1,840

2.880

1,500

1,190

1,020

908

848

818

794

842

812

800

772

767 

723

675

660

625

581

563

600

572

34,756

1,121

68,940

June

532

5§0

482

478 

442

421

401

384

376

364

*349

326

307

318

329

296

269

253

272

293

262

237

222 

205

194

180

170

146

143

_135

9,286

310

18,420

July

143

T37

130

128 

128

120

114

114

112

99

88

88

94

108

108

95

84

71

71

79

76

77

68 

62

53

55

60

62

62

64

56

2,806

90.5

5,570

Aug.

48

51

58

60 

60

58

58

51

53

*48

48

48

52

46

45

46

44

51

51

52

55

55

52

45

49

45

46

49

46

44

48

1,562

50.4

3,100

Sept.

46

44

49

48 

39.

43

45

46

41

46

39

48

*52

56

56

52

59

62

85

94

85

74

68 

65

56

56

58

60

64

56

1,692

56.4

3,360

Calendar year 1955: Max 12,400 Min 6.1 Mean 536 Ac-ft 387,900

Water year 1955-56: Max 22,600 Min 24 Mean 1,032 Ac-ft 749,100

Peak dlscharcte (base, 8,000 cfs). 

17.600 cfs (14.73 ft); Dec. 23 (12 m

Nov. 20 (9:30 p.m.) 16.700 cfs (14.40 ft); Dec. 6 (6 a.m.) 

) 19,200 cfs (15.28 ft); Jan. 7 (7:30 p.m.) 15,000 cfs (13.77

,. .- , -....., 9,220 cfs (11.18 ft); Jan. 15 (12 m.) 33.000 cfs (19.06 ft); Jan. 20 (12 m.) 

9,020 cfs (11.08 ft): Jan. 22 (4:30 p.m.) 12,600 cfs (12.77 ft); Jan. 26 (9:30 a.m.) 8,700 cfs 

(10.92 ft); Feb. 22 (time and discharge unknown).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Battle Creek near Cottonwood.
SACRAMENTO RIVER BASIN 395

Cottonwood Creek near Cottonwood, Calif.

Location. Lat 40°23'10", long 122"14'15", In NE^ sec. 7, T. 29 N., R. 3 W., on right bank 

2 miles east of Cottonwood and 2.4 miles upstream from mouth.

Drainage area.--945 sq mi.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 370 ft (from river-profile map).

Average discharge. 16 years, 837 cfs (606,000 acre-ft per year).

Extremes. Maximum discharge during year, 49,000 cfs Dec. 22 (gage height, 15.23 ft); minimum, 54 cfs Nov. 12.

1940-56: Maximum discharge, 52,300 cfs Mar. 1, 1941 (gage height, 15.4 ft), from 

rating curve extended above 30,000 cfs; minimum, 15 cfs for several days during September 1945.

Remarks --Records good except those for periods of no gage-height record and Sept. 23-30, 

which are fair. Small diversions above station. At times during irrigation season, 

Cottonwood Creek receives water above station from Sacramento River by way of AndersonCottonwood Canal. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Revisions (water years). WSP 1345: 1943, 1944(M), 1946-47, 1949{M), 1951-52.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Sept. 22-30)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

l.S 

2.0 

2.5 

3.0 

4.0 

5.0

40

110

325

660

1,520

2,530

6.0

8.0

10.0

12.0

14.0

15.0

3,940

8,000

13,400

20,800

35,000

46,200

1.7 

2.0 

2.5 

3.0 

3.5

72

129

253

445

725

4.0 

5.0 

6.0 

7.0 

8.0

1,090

2,220

3,780

5,720

8,000

Note.--Same as preceding 

table above 8.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

85

81

74

64

88

92

92

78

67

60

*67

67

74

85

85

88

78

81

85

85

88

81

81

81

85

85

96

85

78

78

88

2,502

80.7

4,960

Nov.

92

92

103

99

99

96

96

*103

92

71

60

54

60

74

78

92

114

148

226

1,080

2.110

542

520

620

364

285

257

266

266

252

8,411

280

16,680

Dec.

234

234

226

209

719

*5,880

1,680

1,050

1,860

1,180

872

788

702

620

550

558

786

5,260

*20,300

14,000

*9,030

*56.900

16,900

8,470

5,040

4,880

2,970

2,230

1,730

1,400

1,190

148,448

4,789

294,400

Jan.

2,870

1,850

1-.260

1,480

2,640

1,910

4,660

4,090

2,720

3,460

3,650

2,560

3,590

15,700

22.400

12,700

*7,300

5,490

4,440

6,050

4,800

4,380

5,360

4,070

6,640

7,160

6,760

5,990

3,460

2,430

1,860

163,730

5,282

324,800

Feb.

1,490

1,240

1,100

1,030

944

850

792

743

689

653

623

600

605

561

517

470

445

422

491

6,630

21.100

14,900

*9,070

6,530

5,740

4,760

3,920

3,310

3,150

93,375

3,220

185,200

Mar.

2.710

2,540

2,500

2,470

2,420

2,220

1,960

1,850

1,820

1,760

1,700

1,620

1,570

1,530

1,500

1,470

1,480

1,560

1,640

1,660

1,620

1,610

1,580

1,600

1,680

1,680

1,540

1,400

1,310

1.280

1,280

54,560

1,760

108,200

Apr.

1,250

1,150

1,070

1,020

*1.000

1,010

1,010

1,020

1,040

1,160

1,380

2.290

1,780

1,580

1,540

1,520

1,510

1,480

1,410

1,570

1,710

1,660

1,650

1,680

1,640

1,730

1,590

1,390

1,260

1,170

42,270

1,409

83,840

May

1,110

1,110

1,150

1,700

1,680

1,610

1,800

1.830

1,600

1,590

1,580

1,320

1,190

1,100

1,030

968

976

984

1,030

1,030

984

960

968

952

878

830

785

*737

707

689

713

35,591

1,148

70,590

June

~65S 701

629

623

594

561

528

500

500

490

485

465

455

445

436

409

388

372

388

376

364

349

326

315

311

297

*297

283

273

260

13,079

436

25,940

July

250

244

238

232

220

212

207

199

189

186

182

179

179

182

182

182

179

170

170

163

157

157

a!50

a 140

*a!30

121

115

119

117

115

ill

5,379

174

10,670

Aug.

103

.113

103

96

107

111

109

107

103

101

88

88

88

90

86

85

a 84

a 84

a84

a84

a86

a92

*a97

90

83

86

81

77

88

86

90

2,870

92.6

5,690

Sept.

85

76

72

72

74

86

83

77

83

79

88

98

92

88

83

96

92

88

*88

119

135

125

122

122

106

102

99

97

86

93

2,806

93.5

5,570

Calendar year 1955: Max 36,900 Mln 43 Mean 712 Ac-ft 515,600

Water year 1955-56: Max 36,900 Mln 54 Mean 1,566 Ao-ft 1,137,000

Peak discharge (base. 7.100 cfs). Dec. 6 (8 a.m.) 9.100 cfs (8.44 ft); Dec. 19 (9 a.m.) 30,900 

cfs (13.54 ft); Dec. 22 (8 a.m.) 49,000 cfs (15.23 ft); Jan. 7 (7 p.m.) 7,400 cfs (7.75 ft): Jan. 15 

(l p.m.) 26,200 cfs (12.91 ft); Jan. 20 (1:30 p.m.) 7,900 cfs (7.96 ft); Jan. 26 (12:30 p.m.) 9,470 

cfs (8.58 ft); Feb. 21 (8:30 p.m.) 47,900 cfs (15.14 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge Interpolated or estimated on basis of 2 discharge measurements.
396 SACRAMENTO RIVER BASIN

Battle Creek near Cottonwood, Calif.

Location. Lat 40°23'50", long 122°08'05", in NW£ sec. 6, T. 29 N., R. 2 W., on left bank 

6.3 miles upstream from mouth and 7.6 miles east of Cottonwood.

Drainage area. 362 sq mi.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Datum of 

Bureau of Reclamation).

je is 421.47 ft above mean sea level (levels by

Average discharge. 16 years, 464 cfs (335,900 acre-ft per year).

Extremes. Maximum discharge during year, 8,540 cfs Jan. 14 (gage height, 10.32 ft); minimum, 48 cfs Sept. 4.

1940-56: Maximum discharge, 12,800 cfs Feb. 6, 1942 (gage height, 11.85 ft); minimum 

not determined; minimum gage height, 1.20 ft June 25, 1949.

Maximum stage known, 15.8 ft Dec. 11, 1937, from floodmarks (discharge, 35,000 cfs, 

by slope-area determination of peak flow).

Remarks. Records good. Plow regulated by four small powerplants and several small reservoirs above station. About 10 cfs diverted above station for irrigation.

Cooperation. One discharge measurement furnished by Bureau of Reclamation.

Revisions (water years). WSP 1345: 1944(M) , 1945(P), 1946, 1947(P), 1948, 1949(P), 1950.

Rating tables, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Dec. 6, 17-19)

Oct. 1 to Dec. 19

2.5 

2.7 

3.0 

4.0 

5.0 

6.0

145

194

281

685

1,290

2,120

4,680

Dec. 2o to Sept. 30

2.7 198

3.0 300

4.0 825

5.0 1,490

7.0 3,320

9.0 6,240

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

E3

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

162

155

169

167

164

169

172

167

157

184

199

189

174

167

167

157

169

169

167

182

172

182

176

*186

179

189

189

184

182

179

184

5,408

174

10,730

Nov.

184

184

184

184

189

186

197

184

184

186

T92~ 179

199

221

202

224

241

233

266

1,280

1,160

335

314

266

250

233

224

233

221

*216

8,551

285

16,960

Dec.

247

262

233

218

1,440

*2,410

495

403

483

328

284

278

262

256

247

298

1,450

1,970

*4,180

2,390

1,980

4,360

*4,480

2,170

1,370

3,470

1,990

*1,290

990

879

819

41,932

1,353

83,170

Jan.

903

735

675

789

915

765

1,410

1,470

1,210

1,640

1,080

915

1,940

5,730

5,820

2,940

1,890

1,600

1,520

2,040

1,660

1,910

1,810

1,450

2,030

1,970

1,460

1,230

1,090

1,010

945

52,552

1,695

104,200

Feb.

867

837

813

789

759

729

699

681

651

640

628

618

606

584

562

535

546

535

552

646

1,450

5,550

2,260

1,410

1,170

1,020

915

849

815

26,494

914

52,550

Mar.

765

*735

717

729

771

663

645

623

618

601

579

557

552

546

535

530

540

540

557

562

562

557

568

584

601

623

579

557

535

574

568

18,673

6O2

37,040

Apr.

552

518

*508

508

524

535

552

568

584

618

606

606

562

562

535

555

546

552

590

628

669

669

723

759

747

789

747

717

675

634

18,318

611

36,350

May

634

151

675

1,200

1,220

1.410

1,320

*990

867

849

1,020

819

735

699

687

755

783

789

891

915

958

997

1,080

997

958

945

903

855

855

891

879

28,207

910

55,950

June

801

777

807

807

711

687

669

663

669

681

675

640

623

640

687

612

574

568

623

657

574

535

535

535

518

491

486

502

491

47_5

18,713

624

57,120

July

460

445

416

403

598

390

362

362

367

362

358

549

344

340

324

320

508

308

312

316

304

304

296

296

293

289

286

278

278

275

*268

10,411

336

20,650

Aug.

264

261

254

254

250

247

247

244

244

235

240

257

257

255

233

230

230

227

220

227

227

224

224

227

220

214

214

211

214

211

104

7,202

232

14,280

Sept.

208

201

204

201

201

204

208

208

211

208

211

211

*214

214

214

208

214

217

230

289

244

235

230

217

220

220

220

214

214

220

6,508

217

12,910

Calendar year 1955: Max 4,480 Win 143 Mean 362 Ac-ft 262,200

Water year 1955-56: Max 5,820 Win 155 Mean 664 Ao-ft 481,900
SACRAMENTO RIVER BASIN 397

Paynes Creek near Red Bluff, Calif.

Location. Lat 40°15'50", long 122"11'10", in SE^- sec. 22, T. 28 N., R. 3 W. , on right bank 

0.4 mile upstream from mouth and 6.5 miles northeast of Red Bluff.

Drainage area. 92.5 sq mi.

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 360 ft (from topographic map).

Average discharge.--? years, 79.9 cfs (57,850 acre-ft per year).

Extremes. Maximum discharge during year, 5,130 cfs Dec. 19 (gage height, 8.77 ft); from 

rating curve extended above 3,000 cfs; minimum,daily, 0.1 cfs Aug. 11-19.

1949-56: Maximum discharge, that of Dec. 19, 1955; no flow at times during meet years.

Remarks. Records good. Diversions up to 10 cfs at times above station for irrigation. 

Cooperation. One discharge measurement furnished by Bureau of Reclamation. 

Revisions (water years). WSP 1285: 1950, 1951-52(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Feb. 22 Feb. 23 to Sept. 30

2.2

2.3

2.4

2.5 

2.7 

3.0

2.1 

4.3

8.0

15

35

81

3.5 

4.0 

4.5 

5.0 

6.0 

7.5

193

345

560

850

1,610

3,250

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

0.1 

.2 

.3

21

2.8 

3.2 

3.6 

4.0 

4.5 

5.0 

5.6

47

114

210

340

560

850

1,280

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Total

Mean

AC- ft

Oct.

2.7

2^9

2.9

2.7

2.7

2.9

2.9

3.1

5.5

5.5

5.5

5.1

5.1

5.1

3.1

5.1

5.1

5.1

5.1

5.1

5.1

3.1

5.1

5.1

*5.5

5.5

5.5

5.5

3.3

5.5

95.5

5.08

189

Nov.

5.5

5.5

5.5

5.5

5.7

5.7

5.5

5.5

5.5

5.5

5.1

571

4.0

5.2

5.7

9.0

16

15

9.6

140

509

541

75

54

28

22

18

17

14

15

852.5

27.7

1,650

Dec.

12

12

12

12

585

1,110

209

121

166

81

57

*46

41

56

55

57

254

1,040

2,890

906

475

*859

906

445

272

1,450

645

545

229

170

146

15,400

452

26,580

Jan.

259

176

150

T94

520

*255

862

1,090

586

1,000

470

551

795

2,810

2,090

786

456

592

548

615

454

420

588

501

781

851

515

566

286

229

190

18,704

605

37,100

Feb.

156

152

117

106

100

92

87

79

74

70

68

65

61

60

58

57

55

55

60

151

850

2.420

1,280

577

454

568

277

255

210

8,552

287

16,550

Mar.

180

*TBT

155

122

118

105

92

86

81

80

76

70

68

64

60

54

51

48

48

47

48

48

48

47

44

45

47

45

*47

51

45

2,247

72.5

4,460

Apr.

55

52

50

50

29

28

28

28

28

28

50

58

56

54

52

50

29

28

28

26

26

26

26

28

28

51

50

29

26

25

882

29.4

1,750

May

24

24

28

50

120

297

242

166

97

99

207

106

85

70

57

50

42

36

51

29

26

20

19

17

15

*15

14

14

14

15

16

2,045

66.0

4,060

June

15

14

12

11

11

11

11

11

10

8.6

6.6

6.2

6.2

6.6

7.6

8.1

6.6

6.2

7.1

6.6

6.2

*5.8

5.8

5.5

5.5

4.9

4.9

4.9

4.5

475

254.5

7.82

465

July

4.5

.5

.5

.9

.9

.5

.5

.5

4.2

5.5

.4

.2

77

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

.4

.5

.7

50.2

1.62

100

Aug.

0.6

.6

.9

1.0

1.0

1.0

1.2

T7o

1.0

.2

.1

7T

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

11.8

0.38

25

Sept.

0.2

.5

.5

.5

.5

**.4

.4

.7

.7

.7

.8

.9

1.0

1.2

1.2

1.5

1.5

1.4

1.8

2.2

 277 5.0

2,7

2.4

2.4

2.2

2.0

2.0

2.0

2.2

41.0

1.37

81

Calendar year 1955: Max 2,890 Mln 0 Mean 61.6 Ao-ft 44,5SO

Water year 1955-56: Max 2,890 Mln o.l Mean 128 Ac-ft 92,990

. 

Discharge measurement made on this day.

Field estimate made on this day.
SACRAMENTO RIVER BASIN

Sacramento River near Red Bluff, Calif.

Location. Lat 40° 13'55", long 122° 10'50", In SEi sec. 34, T. 28 N. , R. 3 W., on left bank 

at lower end of Iron Canyon, 0.5 mile downstream from Sevenmlle Creek and 4.6 miles 

northeast of Red Bluff.

Drainage area. 9.300 sq mi, approximately, excluding Goose Lake basin. 

Records available. April 1895 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 253.18 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to January 1902, staff gage at site 

16.2 miles upstream at different datum. January 1903 to December 1919 staff gage at 

several sites within 1 mile of present site and at same datum.

Average discharge. 61 years, 11,180 cfs (8,094,000 acre-ft per year).

Extremes. Maximum discharge during year, 115,000 cfs Jan. 15 (gage height, 22.30 ft); minimum, 4,190 cfs Dec. 5 (gage height, 0.96 ft).

1895-1956: Maximum discharge, 291,000 cfs Feb. 28, 1940 (gage height, 38.9 ft), from 

rating curve extended above 170,000 cfs by logarithmic plotting and on basis of velocity - 

area studies; minimum, 2,000 cfs Mar. 29, 1944 (gage height, -0.45 ft).

Remarks. Records excellent. Plow regulated by Shasta Lake since Dec. 30, 1943 (see 

p. 390). Diversions, in addition to those on tributaries, for irrigation of about 

22,000 acres between stations at Keswick and near Red Bluff.

Revisions (water years). WSP 861: 1904, 1907, 1909, 1914-15, 1927-28.

Rating table, water year 1955.-56 (gage height, in feet, and 

discharge, In cubic feet per second)

0.9 

1.4 

2.0 

3.0 

4.0

4,080

5,080

6,470

9,150

12,100

6.0

8.0

12.0

16.0

22.0

18,700

26,500

45,800

69,000

113,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

5,660

5,640

5,660

5,660

5,660

5,700

5,820

5,910

5,890

5,980

5,980

6.050 

5,500

5,340

5,320

5,320

5.500

5,300

5,320

5,370

5,450

5,390

5,370

5,340

5,390

*5,450

5,430

5,450

5,480

5,500

5,520

172,150

5,553

341,500

Nov.

5,370

5,520

5,540

5,570

5,680

5,570

5,570

5,610

5,610

5,570

5,500

5,520 

5,730

5,820

5,910

5,860

5,410

5,480

5,860

11,600

20.600

7,290

6,820

8,290

6,240

5,680

5,410

5,340

5,300

4,890

194,160

6,472

385,100

Dec.

4,760

*4,660

4,350

4.250

7,450

34,500

10,400

4,720

11,800

7,970

6,240

5,680 

5,370

5,100

4,870

5,820

11,200

27,800

54,600

57 , 100

29,300

88.500

74,900

54,700

46,000

52,500

63,900

60,800

57,200

54,900

54,000

915,340

29,530

tl,816

Jan.

48,400

*55,000

53,900

49,100

45,300

38,400

47,800

55,300

43,400

56,900

55 , 100

49,600 

50,400

79,300

107,000

69,300

66,000

57,800

44,300

51,400

46,300

47,400

52,900

45,300

51,500

53,200

48,900

46,900

41,400

39,300

54^500

*1,631.3

52,620

*5,236

Feb.

29,900

*25,700

22,200

19,100

15,600

15,300

13,400

12,700

12,500

12,300

12,200

12,100 

11,900

11,700

11,600

11,400

9,950

9.490

9,600

20,400

51,200

80.200

71,400

68,900

56,700

56,900

59,200

48,000

41,400

832,940

28,720

tl,652

Mar.

*39,200

34,700

27,700

22,400

18,100

15,900

14,700

13,400

12,800

12,600

12,400

12,100 

12,000

11,900

11,800

11,100

10,200

10,000

10,000

10,100

10,000

9,950

9,950

9,920

10,000

9,950

8,750

9,660

9,400

9,400

6,670

429,950

13,870

852,800

Apr.

7,750

*7,110

7,030

6,980

6,900

6,980

6,880

6,980

6,750

6,750

6,980

8.080 

7,750

7,510

7,290

7,240

7,080

7,060

6,980

6,420

6,320

6,340

6,440

6,500

6,500

6,640

6,640

6,340

6.150

6,150

206,520

6,884

409,600

May

6,720

6.640

6,720

8,180

11,800

15,300

15 , 800

19,100

18,200

16,900

20.400

18,300 

16,300

15,400

15,200

14,900

14,800

14,800

15,000

16 , 500

16,300

14,900

14,900

13,700

12,800

12,700

10,800

10,300

10,200

10,400

11,300

425,260

13,720

843,500

June

*11.000

10,900

10,900

10,800

10,700

10,600

10,000

9,720

9,600

9,630

8,620

8,590 

8,540

8,560

8,670

8,540

8,400

8,400

8,510

8,590

8,430

8,320

8,270

8,210

8,180

8,100

8. 080

8,700

8,870

8,840

273,270

9,109

542,000

July

8,840

8,810

8,730

8,760

8,700

8.670

9,010

9,070

9,120

9,120

9,980

10.200 

10,200

10,200

10,200

10,200

10,100

10,100

10,100

10,000

10,000

10,000

10,000

10,000

9,980

10,000

10,000

10,000

10,000

10,000

10,000

300,090

9,680

595,200

Aug.

9.450

*9,070

9,090

9,090

9,120

9,090

9,040

9,070

9,040

8,980

8,950

8,980 

8,980

8,980

8,980

8,980

9,010

9,010

9,040

9,070

9,070

9,090

9,090

9,090

9,070

9,010

8,980

9,110

8,900

8.730

8/790

279,930

9,030

555,200

Sept.

8,370

8,520

8.290

8,290

8,520

8,520

8,520

8,350

8,370

8,400

8,370

8,400 

8,430

8,480

8,480

8,510

8,460

8,480

8,560

8.620

8,590

8,560

8,560

8,590

8,560

8,560

8,560

8,540

8,560

8,540

253,760

8,459

503,300

Calendar year 1955: Max 88,500 Min 4,180 Mean 9,659 Ao-ft 6,993,000

Water year 1955-56: Max 107,000 Mln 4,250 Mean 16,160 Ao-ft 11,730,000

* Discharge measurement made on this day.

t Expressed in thousands.
SACRAMENTO RIVER BASIN 399

Antelope Creek near Red Bluff, Calif.

Location.--Lat 408 12'10", long 1228 07'05", in Rio De Los Berrendos land grant, on right 

bank 1.8 miles upstream from diversion dam of Los Molinos Mutual Water Co., 6.5 miles 

east of Red Bluff, Tehama County, and 9.V miles upstream from mouth.

Drainage area. 124 sq mi.

Records available.--October 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 360 ft (from topographic map).* Prior to 

Sept. 18, 1954, at site 0.6 mile downstream at different datum.

Average discharge. 16 years, 148 cfs (107,100 acre-ft per year).

E: remes. Maximum discharge during year, 11,500 cfs Feb. 22 (gage height, 12.43 ft), from 

rating curve extended above 2,800 cfs on basis of slope-area determination at gage 

height 11.78 ft; minimum, 14 cfs Oct. 21.

1940-56: Maximum discharge, that of Feb. 22, 1956; minimum, 14 cfs Oct. 1, 1940, 

Oct. 21, 1955.

Flood of December 1937 reached a stage of about 22 ft from floodmarks, at former 

site and datum.

Remarks. Records good except those for period of shifting control, which are fair. Small 

diversion above station for Red Bluff water supply during October to June of each year.

Rating tables, water year 1955-56, except period of shifting control (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Feb. 22 Feb. 23 to Sept. 30

3.4 

3.6

5.0 

6.0

26

44

94

189

320

690

7.0

8.0

9.0

10.0

11.0

1,170

1,760

2,620

3,310

5,840

3.3 

3.6 

4.0 

4.5

5.0

125

225

355

6.0 705

7.0 1,170

8.0 1,760

9.0 2,620

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

32

31

32

32

29

28

29

29

30

32

37

32

32

*31

31

30

30

31

34

33

28

31

31

30

30

31

32

32

31

31

31

963

31.1

1,910

Nov.

32

3?

32

33

33

34

33

32

32

32

32

32

37

41

36

42

47

42

45

104

234

*70

70

70

52

46

44

42

42

41

1,494

49.8

2,960

Dec.

45

52

45

2~29 43

802

180

107

167

107

79

*67

60

55

52

56

151

1,130

*4,070

i,280

923

*2,360

2,300

1,050

610

2,260

1,100

627

417

314

268

21,006

678

41,660

Jan.

332

*253

205

354

480

356

1,220

1,200

614

910

564

409

841

2,740

*2,710

1,390

830

627

524

722

609

596

609

470

794

1,090

*722

488

386

314

268

23,627

762

46,860

Feb.

227

203

185

174

163

153

143

136

126

123

117

115

110

107

102

97

99

94

107

621

1,460

5.450

2,200

929

666

522

418

355

337

15,539

536

30,820

Mar.

292

TT3

252

238

232

214

*199

19O

182

172

166

158

154

149

143

138

T38

138

141

143

143

143

145

145

151

154

149

143

*139

138

139

5,298

171

10,510

Apr.

13S

129

123

119.

TT9

119

122

125

130

145

152

154

147

139

132

127

123

123

132

147

162

174

192 *210

210

216

205

192

188

186

4,580

153

9,080

May

186

188

203

320

334

397

32T

280

238

223

300

228

197

182

176

188

205

214

218

232

248

255

265

250

232

222

210

190

186

188

186

7,263

234

14,410

June

154" 166

151

151

134

*125

119

115

114

115

112

104

97

103

123

103

96

91

98

103

91

86

83

81

79

*74

70

66

63

62

3,129

104

6,210

July

60

60

57

56

55

54

53

53

52

51

51

50

51

52

50

48

47

46

46

46

45

44

43

43

43

*42

42

41

40

40

1,501

48.4

2,980

Aug.

40

40

ii4T

40

40

40

40

40

40

39

39

40

40

39

39

40

39

39

39

39

39

39 *39

39

39

39

39

39

40

40

1,226

39.5

2,430

Sept.

39

39

38

38

38

38

38

38

38

38

38

39

39

39

39

38

39

42

50

*55

44

41

40

40

40

40

39

40

40

39

1,203

40.1

2,390

Calendar year 1955: Max 4,070 Mln 28 Mean 118 Ao-*t 85,250

Water Water year year 1955-56: 1955-56: Max Max 5,450 5,450 Mln Mln 28 28 Mean Mean 237 237 Ao-ft Ao-ft 172,200 172,200

Peak discharge (base, 2,200 cfs). Dec. 19 (4 p.m.) 8,510 cfa (11.78 ft); Dec. 23 (2 a.m.) 3,560 

cfs (9.66 ft); Dec. 26 (11 a.m.) 6,200 cfs (11.12 ft); Jan. 7 (8 p.m.) 4,420 cfs (10.38 ft); Jan. 14 

(7 p.m.) 4,060 cfs (10.16 ft); Feb. 22 (8 p.m.) 11,500 cfs (12.43,ft).

* Discharge Discharge measurement measurement made on this day. 

Note.--Shifting-control method used May 6 to June 24.
400 SACRAMENTO RIVER BASIN

Mill Creek near Los Molinos, Calif.

Location.--Lat 40°03'17", long 122°01'23", in NEitJWir see. 6, T. 25 N., R. 1 W., on right 

bank 4§ miles northeast of Los Molinos and 5.5 miles upstream from mouth.

Drainage area. 134 sq mi.

Records available.--September 1909 to.September 1913 (fragmentary), October 1928 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 420 ft (from topographic map). Septembe" 

1909 to September 1913 staff gage at site 0.3 mile downstream at different datum.

Average discharge. 28 years (1928-56), 289 cfs (209,200 acre-ft per year).

Extremes. Maximum discharge during year, 9,180 cfs Dec. 22 (gage height, 12.25 ft); minimum, 85 cfs Oct. 6.

1928-56: Maximum discharge, 23,000 cfs Dec. 11, 1937 (gage height, 23.4 ft, from 

floodmarks), from rating curve extended above 3,900 cfs on basis of slope-area studies; 

minimum, 49 cfs Dec. 13, 1932.

Remarks. Records good. No storage or large diversion above station. Records of chemical 

analyses for the water year 1956 are given in WSP 1453.

Revisions.--WSP 861: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, in cubic 

feet per second)

Oct. 1 to Dec. ZZ Dec. 23 to May ZZ

1.5 80

1.8 142

2.2 246

2.6 376

3.0 535

4.0 

5.0 

7.0 

9.0 

11.0

1,010

1,560

3,000

4,930

7,400

1.9 

2.2 

2.6 

3.0 

4.0

222

300

426

565

1,010

May 23 to Sept. 3o

1.5 U3

2.0 220

2.5 365

3.0 555

4.0 1,010

Mote. Same as 

preceding table 

above 4.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

91

91

89

91 

91

89

89

87

89

102

137 *ToT

96

94

93

91

91

93

93

94

94

94 

93

91

91

100

102

94

94

94

94

2,934

94.6

5,820

Nov.

94

94

94

94 

108

106

98

94

94

94

94

94

108

117

108

121

128

121

164

449

*484

179 

164

140

119

113

115

115

113

108

4,124

137

8,180

Dec.

126

126

121

113 

3^6

1,090

317

205

255

174

147

144

137

128

126

130

273

1,330

4,690

2,810

3,020

*6,770 

5,380

2,340

1,390

2,990

1,840

1,140

784

*605

537

39,604

1,278

78,550

Jan.

597

478

406 642- 

780

605

1,870

1,380

834

1,080

788

633

1,440

3,170

5,830

2,280

1,370

1,040

852

1,080

945

1,080 

1,150

852

1,190

1,430

906

657

573

520

464

34,922

1,127

69,270

Feb.

410

377

361

349 

333

315

300

286

267

264

264

264

267

259

*249

239

?41

239

288

1,360

2,070

4,610 

2, 260

1,230

955

721

589

523

554

20,444

705

40,550

Calendar year 1955: Max 6,770 Min 82

Mar.

457

426

410

403 

400

361

336

327

324

318

309

300

297

297

292

*294

309

324

349

364

367

377 

393

419

446

460

413

387

383

396

400

11,338

366

22,490

Apr.

371

346

330

*333 

349

361

383

403

433

478

460

426

400

383

364

361

377

393

457

530

597

601 

669

685

629

621

558

512

495

506

- -----

13,811

460

27,390

May

523

548

562

l.OOQ 

896

865

744

641

585

577

649

*530

474

464

464

530

597

613

669

766

806

847 

888

784

762

744

698

622

654

716

721

20,939

675

41,530

June

608

608

662

662 

519

495

511

543

571

595

567

531

511

551

551

471

451

459

567

531

451

435 

447

463

439

*421 439"

455

451

421

- - - - -

15,386

513

30,520

July

390

SBT

327

315 

300

294

294

303

306

288

276

265

255

242

235

228

235

235

228

238

238

228 

222

*222

218

212

205

198

193

188

184

7,916

255

15,700

Aug.

181

rn

177

174 

170

170

166

164

164

162

159

159

157

157

157

157

155

153

153

153

*151

149 

149

147

147

147

145

145

145

145

143

4,878

157

9,680

Sept.

141

141

139

139 

139

137

137

137

137

137

137

137

137

137

137

1J5

135

141 *irs

!£i

139

135 

133

131

129

127

127

127

126

124

4,037

137

8,130

Mean 281 Ac-ft 203,100

Water year 1955-56: Max 6,770 Min 87 Mean 493 Ac-ft 357,800

Peak discharge (base, 1.500 cfs). Dec. 19 (3 p.m.) 7,010 cfs (10.70 ft); Dec. 22 (4 a.m.) 9,18C 

cfs (12.25 ft); Dec. 26 (10 a.m.) 5,110 cfs (9.16 ft); Jan. 7 (6 p.m.) 5,020 cfs (9.08 ft)j Jan. 15 

(10:30 a.m.) 4,790 cfs (8.87 ft); Jan. 22 (5 p.m.) 1,520 cfs (4.94 ft); Jan. 26 (8 a.m.) 2,480 cfs 

(6.37 ft); Feb. 22 (6 p.m.) 6,48O cfs (10.29 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 401

Elder Creek near Paskenta, Calif.

Location. Lat 40°01'30", long 122°30'30", in NW$ sec. 14, T. 25 N., R. 6 W., on right 

bank 2.5 miles downstream from South Fork, 8 miles northwest of Flournoy, and 11 miles 

north of Paskenta.

Drainage area.--95.8 sq mi.

Records available. December 1948 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 720 ft (from topographic map).

Average discharge.--? years (1949-56), 98.1 cfs (71,020 acre-ft per year).

Extremes. Maximum discharge during year, 11,100 cfs Dec. 21 (gage height, 12.52 ft), 

from rating curve extended above 1,200 cfs on basis of slope-area determination at 

gage height 10.97 ft; minimum, 0.9 cfs Oct. 1.

1948-56: Maximum discharge, that of Dec. 21, 1955; no flow Aug. 6, Aug. 14 to 

Sept. 16, 1950.

Remarks. Records good. No large diversion.

Rating tables, water year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Feb. 21 Feb. 22 to Sept. 30

2.5

2.6

2.7

2.8

2.9

3.1

3.3

3.5

1.0

2.6

5.8

9.5

14

29

50

75

4.0

4.5

5.0

6.0

7.0

9.0

9.5

157

270

415

810

1,460

3,530

4,350

3.5

4.0

5.0

6.0

7.0

9.0

9.6

112

193

433

810

1,460

3,530

4,910

2.1

2.2

2.4

2.6

3.0

3.5

2.9

4.4

8.5

16

41

79

4.0

4.5

5.0

6.0

7.0

7.5

141

245

390

810

1,460

1,890

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

H1.2

1.3

1.3

1.3

1.3

1.3

1.4

 1.7

2.4

2.1

1.9

1.7

1.7

1.4 

1.4

1.6

1.9

2.4

2.6

2.6

2.4

2.4

2.1

2.1

2.1

2.1

2.4

2.4

2.4

57.2

1.85

113

Nov.

H3.1

3.1

3.4

3.4

3.1

2.8

*2.8

2.8

2.6

2.8

6.2

7.9

6.8

9.1 

12

20

30

135

65

23

49

36

20

15

15 

16

15

12

528.3

17.6

1,050

Dec.

12 

12

10

SU9

44

239

*60

57

98

49

36 '

37

31

27

24

34

115

1,620

3,520

800

3,550

4.370

2,560

828

626

511

390 

279

216

197

170

20,531.9

662

40,720

Jan.

435 

216

170

*328

366

284

713

451

340

668

*505

413

539

1,260

1.950

1,010 

668

556

473

535

466

457

466

407

747

754

713 

515

398

340

296

17,439

563

34,590

Feb.

263 

236

224

218

204

191

189

182

170

164

161

166

173

*161

144

128 

123

113

182

1,210

3.880

1,730

816

548

456

362

310 

280

255

13,239

457

26,260

Mar.

221

219

216

203

183

171

166

*166

164

160

151

148

148

143

141 

151

168

183

181

181

183

185

200

216

205

177 

162

155

158

155

5,491

177

10,890

Apr.

141 

129

119

116

*123

125

135

141

162

185

349

337

228

203

194

198 

231

240

265

288

301

288

290

278

262

301

245

207

188

183

6,452

215

12,800

May

188 

198

214

238

231

243

240

221

200

183

*168

151

135

125

123

130 

150

162

164

156

148

141

136

120

107

99

90 

82

78

78

25

4,774

154

9,470

June

70 

65

62

60

*57

54

51

49

47

46

44

42

40

69

41

38 

35

34

38

35

32

30

29

28

27

*25

24 

23

21

21

1,237

41.2

2,450

July

21 

2T

21

20

20

19

18

17

16

16

16

16

16

17

16

14 

13

12

11

12

11

9.7

9.1

8.8

8.5

*8.3

8.0 

8.0

8.0

7.8

7.4

426.6

13.8

846

Aug.

6.9 

6.9

6.9

7.1

il

7.1

6.7

6.2

6.0

5.5

5.5

5.7

6.0

5.8

5.7

5.7 

5.7

5.5

5.3

5.3

5.1

*5.1

4.9

4.8

4.6

4.4

fct

4.1

4.1

4.2

172.4

5.56

342

Sept.

4.1 

4.0

3.S

3.6

3.6

i.5

3.6

4.0

4.1

4.2

4.2

4.6

4.6

4.6

4.4

4.4 

4.2

*4.8

6.7

6^

5.7

4.6

4.2

4.1

3.8

3.8

4.0 

4.0

4.0

4.0

130.1

4.34

258

Calendar year 1955: Max 4,370 Kin 0.6 Mean 81.9 Ao-ft 59,290

Water year 1955-56: Max 4,370 Mln l.l Mean 193 Ac-ft 139,800

Peak discharge (base. 1,200 of a). Dec. 19 (1:30 D.ra.) 7.160 ofs (10.97 ft): Dec. 21 (8 p.m.)

11,100 ofs (12.52 ft); Jan. 15 (2 p.m.) 2,540 cfs (8.17 ft); Feb. 21 (3 p.m.) 7,420 cfs (11.08 ft).

* Discharge measurement made on this day.
402 SACRAMENTO RIVER BASIN

Elder Creek at Gerber, Calif.

Location.--Lat 40°03>05", long 122°09'55", in Sauoos Grant, on right bank 1.0 mile west of 

Gerber, Tehama County,and 3.5 miles upstream from mouth.

Drainage area. 142 sq mi.

Records available.--October 1949 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 240 ft (from topographic map).

Average discharge.--? years, 102 cfs {73,840 acre-ft per year).

33.--Maximum discharge during year, 10,400 cfs Dec. 22 (gage height, 13.38 ft), from

rating curve extended above 3,300 cfs on basis of logarithmic plotting and velocityarea study; no flow for several months

1949-56: Maximum discharge, that of Dec. 22, 1955; no flow for several months each 

year.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

No large diversion.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

0

*0

0

0

0

0

0

0

0

0

6

10

8

10

15

25

50

2_00

50

20 

70

40

30

20

20

22

20

15

631

21.0

1,250

Dec.

15

15

lo- 10

go

*300

84

47

151

58

32

26

23

18

15

17

55

1,220

*4,390

*1,300

1,850

*5.260 

2,590

828

534

523

411

314

248

218

206

20,858

673

41,370

Jan.

426

264

206

T\S

364

*270

665

495

332

588

559

393

410

1,650

2.070

1,190

652

510

434

490

434

398 

422

386

963

847

692

562

418

356

310

17,970

589

35,640

Feb.

268

*241

228

221

211

197

194

191

181

175

175

175

181

175

*162

150

145

139

156

811

5.600

2,240 

956

574

452

386

326

290

270

13,470

464

26,720

Mar.

238

*2?5

221

218

207

186

168

162

158

156

153

147

144

144

141

138

141

156

168

179

179

179 

179

186

204

204

179

159

156

153

153

5,385

174

10,680

Apr.

141

129

*121

115

TT8

121

127

138

156

179

249

410

246

218

200

190

228

238

252

282

302

286 

294

290

266

302

260

224

196

186

6,464

215

12,820

May

186

193

214

249

242

'563 282

242

218

204

182

159

144

132

124

129

144

156

165

162

156

147 

144

129

110

*102

92

82

78

76

74

4,980

161

9,880

June

69

63

58

56

*54

49

46

41

40

39

36

35

34

78

128

35

28

26

28

27

23

20 

17

16

16

*15

15

13

12

10

1,127

37.6

2,240

July

9^

9.6

8.0

7.2

6.5

5.8

5.8

5.1

4.0

3.5

3.1

2.7

2.7

2.0

1.8

1.5

1.2

.8

.8

.6

.5

.4 

.3

**.!

.2

**.!

.2

.2

.2

.1

2

84.6-

2.73

168

Aug.

0

0

0

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0.2

0.006

0.4

Sept.

0

0

0

Calendar year 1955 : Max 5,260 Min 0 Mean 79.9 Ac-ft 57,850

Water year 1955-56 : Max 5,260 Min 0 Mean 194 Ao-ft 140,800

Peak discharge (base. 1.200 cfs).--Dec. 19 (3:30 p.m.) 7,760 ofs (11.60 ft); Dec. 22 (12:30 a.m.) 

10,400 cfs (13.38 ft); Jan. 15 (11:30 a.m.) 2,980 ofs (7.48 ft); Jan. 25 (1 p.m.) 1,470 ofs (5.56 

ft); Feb. 21 (8 p.m.) 6,670 ofs (10.81 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.

Note. No gage-height record Nov. 5 to Dec. 6; discharge estimated on basis of 1 discharge measurement and records for station near Paslcenta.
SACRAMENTO RIVER BASIN 403

Thomes Creek at Paskenta, Calif.

Location. Lat 39°52'55", long 122°33'05", In NW£ sec. 4, T. 23 N., R. 6 W., on left bank 

Of.25 mile upstream from Digger Creek and 0.3 mile upstream from highway bridge at 

Paskenta.

Drainage area. 188 sq ml.

Records available. October to December 1920 (gage heights only), January 1921 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 750 ft (from topographic map). Prior to 

0~ct. 1, 1930, staff gage at site 0.3 mile downstream at different datum. Oct. 1, 1930, 

to Dec. 28, 1938, water-stage recorder at site 1,300 ft upstream, and Dec. 29, 1938, to 

June 20, 1942, at site 1,000 ft upstream at different datums.

Average discharge. 35 years (1921-56), 258 cfs (186,800 acre-ft per year).

Extremes. Maximum discharge during year, 23,500 cfs Dec. 21 (gage height, 12.14 ft), from 

rating curve extended above 11,000 cfs by logarithmic plotting; minimum, 1.8 cfs Oct.l3, 5-8.

1921-56: Maximum discharge, that of Dec. 21, 1955; no flow at times during many 

years.

Remarks. Records good. No storage or large diversion above station. 

Revisions (water years). WSP 1345: 1923, 1924-28(M) , 1938, 1940{M).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.8

1.8

2.0

2.0

1.8

1.8

2.0

2.0

2.0

 2.4

2.8

2.8

3.0

3.0

3.0

2.8

2.8

2.8

3.3

4.4

4.4 

4.4

4.4

4.4

4.2

4.4

4.2

4.2

4.4

4.4

4.2

97.9

3.16

194

Nov.

4.4

T74

4.4

4.7

5.0

5.0

5.4

5.8

*5.4

5.4

5.0

5.0

8.4

11

10

14

15

25

154

755

364

137

97

76

60

63

110

139

122

97

2,317.3

77.2

4,600

Dec.

101

99

76

63 73-

830

 380

233

475

266

298

357

274

230

200

310

482

1,610

6,050

*3,810

6,150 

 16.300

10,700

4,220

2,410

1,970

1,490

1,040

833

707

590

62,627

2,020

124,200

Jan.

635

462

378

 680

1,030

770

1,240

930

770

1,080

 1,330

1,150

1,620

4,160

7.690

4,320

2,210

1,740

1,530

1,630

1,530 

1,610

2,230

1,500

1,490

1,450

1,170

940

797

698

635

49,405

1,594

97,990

Feb.

566

526

518

534

510

486

502

526

502

518

542

608

635

*590

534

470

446

402

430

1,250

4.350 

3,980

2,250

1,270

990

809

686

630

574

26,634

918

52,830

Mar.

505

550

582

590

558

475

433

426

*468

490

505

475

498

558

542

582

662

800

872

900

845 

800

827

910

990

920

737

662

694

791

719

20,366

657

40,400

Apr.

630

566

512

550

 678

710

800

800

970

1,110

 1,070

827

670

670

728

710

818

872

1,030

1,200

1.260 

1,220

1,250

1,210

1,080

990

818

746

746

764

26,005

867

51,580

May

81S

881

960

1.290

1,110

930

872

755

746

755

*654

582

528

498

535

630

755

827

863

818

755 

764

755

670

622

582

535

461

461

498

498

22,408

723

44,450

June

433

39T

405

386

316

292

280

280

292

292

264

252

247

252

220

196

182

177

196

177

164 

156

160

152

*143

135

135

132

124

114

6,946

232

13,780

July

~94 104

86

78

75

70

65

65

63

59

54

52

50

48

45

42

39

36

34

36

32 

30

 29

27

26

24

23

22

21

20

12

1,468

47.4

2,910

Aug.

18

17

17

17

17

17

17

17

16

12

11

12

11

10

9.6

9.6

8.8

8.0

8.8

8.8

8.8 

 8.0

8.0 8'8

8.0

8.8

8.0

7.8

778

7 .8

7 . 8

352.2

11.4

699

Sept.

' '.8

.8

.4

.4

7.8

*8.2

9.0

8.6 

8.2

7.4

7.0

6.6

6.6

6.6

6.6

6.6

6.6

220.0

7 .33

436

Calendar year 1955: Max 16,300 Min 0.3 Mean 275 Ac-ft 199,400

Water year 1955-56: 1955-56: Max 16,300 Minl 1.8 Mean 598 Ac-fte 434,100 434,100________________

llscharge (base. 1.600 cfs). Dec. 6 (10:30 a.m.) 1.750 cfs (5.26 ft); Dec. 19 (4 p.m.) 

:fs (9.11 ft); Dec. 21 (12 p.m.) 23,500 cfs (12.14 ft); Jan. 15 (3 p.m.) 10,900 cfs (9.28 ft); 

(12:30 a.m.) 2,950 cfs (.6.36 ft); Feb. 21 (6:30 p.m.j 5,880 cfs (7.67 ft), 

iharare measurement made on this davPeak dl 

10,300 cf_

 Discharge measurement made on this day.
404 SACRAMENTO RIVER BASIN

Deer Creek near Vina, Calif.

Location. Lat 40°00'50", long 121°56'50", in NW^NE^ see. 23, T. 25 N., R. 1W., on left 

bank 0.5 mile upstream from concrete diversion dam and 7.9 miles northeast of Vina.

Drainage area.--200 sq mi.

Records available.--October 1911 to December 1915, March 1920 to December 1937, January 

1939 to September 1956,

Gage.--Water-stage recorder. Altitude of gage is 480 ft (from topographic map). Prior to 

(5ct. 9, 1928, staff gage at site 0.8 mile downstream at different datum. Oct. 9, 1928, 

to Jan. 19, 1939, water-stage recorder at present site at datum 2.64 ft higher.

Average discharge.--37 years (1912-15, 1920-37, 1939-56), 306 cfs (221,500 acre-ft per 

year].

Extremes. Maximum discharge during year, 12,600 cfs Dec. 22 (gage height, 12.78 ft); minimum, 80 cfs Oct. 3.

1911-15, 1920-37, 1939-56: Maximum discharge, 23,800 cfs Dec. 10, 1937 (gage height, 

19.2 ft, present datum, from floodmarks), from rating curve extended above 7,000 cfs on 

basis of velocity-area studies; minimum, 43 cfs Dec. 13, 1932.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

NlTstorage or large diversion above station. Records of chemical analyses for the wate-1 

year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to-Sept. 30

2.2 

2.5 

3.0 

4.0 

5.0

71

128

253

645

1,220

6.0

8.0

10.0

12.0

2,150

4,740

7,740

11,100

2.5 

2.7

3.0 

3.5 

4.0

143

238

420

645

Mote.--Same as 

preceding table 

above 4.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

84

82

82

82

84

84

84

82

82

89

118

93

*87

85

85

85

84

85

85

85

85

85 

85

85

85

91

95

87

85

85

85

2,680

86.5

5,320

Nov.

85

85

85

87 

97

97

89

85

85

85

85

85

100

102

93

104

104

102

116

259

*375

180 

163

134

122

116

116

116

114

112

3,578

119

7,100

Dec.

124

138

126

118 

T9?

705

307

213

281

202

170

165

156

145

138

143

250

1,500

6,530

4,170

3,970

9,720 

*8,430

4,040

2,200

4,670

3,080

1,740

1,200

*930

815

56,575

1,825

112,200

Jan.

862

700

615 800" 

990

835

2,850

2,070

1,230

1,120

912

815

1,210

3,280

5,500

3,690

2,170

1,540

1,300

1,600

1,450

1,600 

1,700

1,300

2,000

2,100

1,400

1,000

850

750

700

48,739

1,572

96,670

Feb.

650

560

520

480 

450

420

390

370

350

330

330

330

330

320

300

*290

296

300

400

1,500

3,000

6 , 500 

3,000

1,900

1,400

1,100

900

800

800

28,316

976

56,160

Mar.

700

640

620

620 

600

550

520

500

480

470

460

450

440

430

420

*420

440

468

490

520

530

540 

560

600

620

650

570

550

550

560

540

16,508

533

32,740

Apr.

510

480

460

*460 

476

484

504

527

545

605

595

570

545

522

492

488

496

504

560

620

680

700 

750

760

740

775

730

675

645

635

-----

17,533

584

34,780

May

630

630

645

1,250 

1,080

1,160

984

900

825

785

830

*730

670

630

610

615

635

660

695

690

700

705 

715

685

660

630

610

570

550

550

540

22,549

727

44,73O

June

500

375

464

452 

436

412

397

381

373

362

354

343

332

336

393

343

318

304

318

343

307

286 

276

269

258

248

*238

231

225

?25

10, 200

340

20,230

July '

218

3T3

205

205 

205

199

192

192

186

179

176

176

176

183

176

170

164

158

158

158

155

152 

149

152

*155

152

149

146

143

143

140

5,327

172

10,570

Aug.

137

13T

137

135 

135

135

132

132

129

129

126

126

126

126

126

123

123

123

123

123

*121

121 

121

121

118

118

118

121

118

115

TT5

3,890

125

7,720

Sept.

112

112

112

112 

110

110

112

112

115

115

121

121

121

121

121

121

lie

*123

164

17C

13f

126 

123

123

121

121

121

118

118

118

3,647

122

7,230

Calendar year 1955: Max 9,720 Min 76 Mean 312 Ac-ft 226,200

Water year 1955-56: Max 9,720 Min 82 Mean 600 Ac-ft 435,400

Peak discharge (base, 2,500 cfs). Dec. 19 (2:30 p.m.) 9,840 cfs (11.29 ft); Dec. 22 (5:30 a.m.) 

12,600 cfs (12.78 ft); Dec. 26 (2 p.m.) 6,720 cfs (9.34 ft): Jan. 7 (5:30 p.m.) 6,940 cfs (9.49 ft); 

Jan. 15 (4 p.m.) 6,560 cfs (9.23 ft); Jan. 26 (time unknown) 2,510 cfs (6.31 ft); Feb. 22 (time unknown) 11,700 cfs (12.31 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 19 to Feb. 16, Feb. 18 to Mar. 15, Mar. 19 to Apr. 3; discharge 

estimated on basis of recorded range in stage, 3 discharge measurements, and records for Mill Creek 

near Los Molinos.
SACRAMENTO RIVER BASIN 405

Big Chico Creek near Chico, Calif.

Location. Lat 39°46'35", long 121°45 1 10", in Arroyo Chico Grant, on right bank 1.8 miles 

upstream from golf clubhouse in Bidwell Park, 2.6 miles upstream from Lindo Channel, 

and 7 miles northeast of Chico, Butte County. Prior to Oct. 1, 1955, at site 0.6 mile 

downstream.

Drainage area. 6 7.'9 sq mi. Drainage area at former site, 68.3 sq mi.

Records available.--May 1930 to September 1956. Prior to October 1952, published as Chico 

Creek near Chico.

Gage.--Water-stage recorder. Altitude of gage is 300 ft (from topographic map). Prior to 

Oct. 1, 1955, at site 0.6 mile downstream at different datum.

Average discharge. 26 years, 143 cfs (103,500 acre-ft per year); median of yearly mean 

discharges, 121 cfs (87,600 acre-ft per year).

Extremes. Maximum discharge during year, 7,250 cfs Feb. 22 (gage height, 15.06 ft); minimum, 22 cfs Oct. 2, 3, 8.

1930-56: Maximum discharge, 8,260 cfs Dec. 10, 1937 (gage height, 16.6 ft, site and 

datum then in use), from rating curve extended above 5,000 cfs on basis of rating at 

cable gage, velocity-area studies, and logarithmic plotting; minimum, 10 cfs Dec. 11, 

1932, Aug. 15, 1939, Sept. 18, 1947.

Remarks. Records good. No storage or large diversion above station. Records of chemical 

analyses for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

feet per second)

2.2 

2.4 

2.7 

3.0

Oct. 1 to Jan. 15

3.5 

4.0 

5.0

Jan. 16 to Feb. 22 Feb. 23 to Sept. 30

134

248

386

760

2.7 

3.2 

4.0 

5.0

196

388

760

6.5

8.0

10.0

13.1

1,520

2,350

3,600

5,750

2.4 

2.6 

3.0 

3.5 

4.0

40

92

192

314

5.0

6.5

8.0

10.1

630

1,280

2,210

3,650

Note.--Same as following table above 

5.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

23

23

23

23

23

23

23

23

23

28

*33

27

27

27

26

26

25

27

27

27

27

27 

27

27

27

29

31

29

29

29

30

819

26.4

1,620

Nov.

27

24

24

25

27

27

26

26

26

27

27

27

37

42

35

*34

34

34

42

78

~56 135

61

48

41

38

39

39

39

38

1,183

39.4

2,350

Dec.

44

54

45

40

72

529

212

121

226

154

100

77

*64

56

49

48

74

839

*4,310

*2,830

*2,300

5,040 

3,700

1,990

1,180

2,360

1,850

1,140

738

546

477

31,265

1,009

62,010

Jan.

477

416

368

474

810

706

2,160

2,240

1,140

900

710

574

713

*2,060

*5,110

2,200

1,280

855

622

622

550

578 

570

*494

586

875

770

582

464

388

546

28,640

924

56,810

Feb.

301

267

242

225

214

200

186

174

162

152

146

140

134

*130

126

118

116

114

166

1,110

2,680

5,750 

3,6l<5

*1,540

1,010

732

581

494

451

21,271

733

42,190

Mar.

409

385

379

391

373

328

288

267

257

250

240

226

214

207

199

192

199

199

207

*212

207

207 

203

201

201

201

188

177

168

164

TST

7,503

242

14,880

Apr.

162

TW

141

135

131

127

123

121

121

123

147

151

143

137

127

121

*114

108

105

103

105

103 

105

105

*106

111

108

103

99

94

-----

3,628

121

7,200

May

90

86

96

207

179

194

188

172

160

153

214

IBS

162

143

129

116

110

103

97

94

*86

83 

78

76

73

70

69

68

67 m

68

3,685

119

7,310

June

65

BT

59

54

59

57

57

*54

54

53

52

51

48

48

53

51

47

47

52

53

48

46 

45

45

*44

41

*41

40

40

3_9

1,507

50.2

2,990

July

39

4039"

38

38

38

39

39

38

36

36

36

36

39

36

35

35

34

34

34

34

33

33

*32

30

32

32

30

30

30

30

1,085

35.0

2,150

Aug.

29

30

30

3230

30

30

30

29

29

29

29

29

28

29

29

29

29

28

*28

28

28 

28

27

27

27

27

27

28

28

27

888

28.6

1,760

Sept.

27

26

26

26

26

26

26

27

26

27

27

28

28

28

27

28

*28

29

38

4_1

29

28 

27

27

27

27

27

28

27

28

840

28.0

1,670

Calendar year 1955: Max 5,040 Kin 20 Mean 148 Ac-ft 107,300

Water year 1955-56: Max 5,750 Mln 23 Mean 280 Ac-ft 202,900

Peak discharge (base. 900 efs). Dec. 19 (4 p.m.) 5,970 cfs (13.40 ft); Dec. 22 (2 a.m.) 7,150 cfs

f 14.94 ft); Dec. 26 (2 p.m.) 3,320 cfs (9.57 ft); Jan. 7 (7 p.m.) 4.340 cfs (11.08 ft); Jan. 15 

2 p.m.) 3,700 cfs (10.16 ft); Jan. 26 (10 a.m.) 1,170 cfs (5.82 ft); Feb. 22 (8 p.m.) 7,250 cfs

(15.06 ft). 

* Discharge easurement made on this day.

493801 O - 59 - 27
406 SACRAMENTO RIVER BASIN

Stony Creek at Black Butte dam site, near Orland, Calif.

Location. Lat 39°49'00", long 122°20 I 00", in SE£ sec. 29, T. 23 N., R. 4 W., on right bank 

120 ft downstream from diversion dam and 8.7 miles northwest of Orland.

Drainage area. 741 sq mi.

Records available. July 1955 to September 1956 in reports of Geological Survey. February 

1948 to January 1955 in files of Bureau of Reclamation and January to July 1955 in 

reports of California Department of Water Resources.

Gage. Water-stage recorder. Altitude of gage is 375 ft (from topographic map).

Extremes. Maximum discharge during year, 19,300 cfs Dec. 22 (gage height, 11.33 ft), from 

rating curve extended above 1,400 cfs on basis of slope-area determination of peak flow; 

minimum daily, 2.5 cfs Oct. 29-31, Nov. 3-8, 15-19.

1955-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, that of Oct. 29- 

31, Nov. 3-8, 15, 19, 1955.

Remarks. Records good except those below 20 cfs, which are fair. Many diversions above 

gage for irrigation. Plow regulated by East Park Reservoir (usable capacity, 50,600 

acre-ft) and Stony Gorge Reservoir (usable capacity, 50,100 acre-ft). Records presentee1 herein include flow of South Diversion Canal), which diverts 120 ft above station.

Cooperation. Records for South Diversion Canal furnished by Orland Unit Water Users 

Association.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23 

24

25

26

27

28

29

30

31

Total

Mean

Ae-ft

Oct.

228 "195

58

28

22

23

23

22

18

18

21

20

17

11

7.7

8.7

**16.

43

44

31

12

11 

11 

12

14

15

7.9

16

2.5

2.5

2 5

960.8

31.0

1,910

Nov.

5.1 

18

2.5

2.5

2.5

2.5

2.5

2.5

16

22

18

6.9

5.8

5.1

**2.5

2.5

2.5

2.5

2.5

9.7

76

38 

24 

26

20

18

18

26

30

28

438.1

14.6

869

Dec.

26 

34

36

30

30

260

238

118

166

142

106

*114

102

86

78

72

118

658

6,180

2,730

*2,290

* 15. 600 

12,000 

6,050

3,520

3,230

2,880

2,080

1,700

1,530

*1,420

63,624

2,052

126,200

Jan.

1,590 

1,380

1.2*0

1,420

1,770

1,640

2,870

3,460

2,170

2,920

3,500

2,740

2,480

6,330

8.110

5,730

4,290

3,400

2,750

2,910

2,830

2,550 

3,150 

2,570

2,660

3,860

4,230

3,670

2,380

2,OOO

1,740

94,340

3,043

187,100

Feb.

1,120 

1,260

1,160

752

664

622

716

842

906

920

920

912

*864

542

536

566

440

414

48T

2,870

9,000

15.000 

8,840 

5,460

3,590

2,690

2,170

1,880

1,730

65,868

2,271

130,600

Mar.

1.650 

1,580

1,550

1,500

1,490

1,400

1,320

1,290

1,260

*1,220

1,180

1,150

1,130

1,110

1,040

1,000

976

890

659

596

*587

581 

570 574"

613

673

701

716

721

726

714

31,167

1,005

61,820

Apr.

691 

668

605

464

49T

548

593

621

657

688

754

824

754

722

731

715

715

*714

706

737

762

770 

790 

787

781

828

865

826

784

768

21,359

712

42,360

May

7-58 

756

762

826

870

911

939

897

864

887

868

836

793

748

734

698

646

603

584

590

596

*596 

604 

603

594

590

565

542

490

460 

455

21,663

699

42,970

June

445 

432

457

455

464

453

420

383

416

438

441

458

447

430

450

418

400

416

382

358

314

302 

354 

374

377

*389

411

411

395

404

12,264

409

24,330

July

395 

376

376

380

395

403

404

410

408

406

403

395

396

393

373

368

369

377

391

421

443

437 

*427 

411

408

406

405

418

413

386 

372

12,365

399

24,530

Aug.

367 

356

355

371

363

349

331

321

340

365

389

38?

356

345

330

321

305

332

301

S09

314

329 

315 

361

353

334

324

339

333

312 

303

10,505

339

20,840

Sept.

268 

238

246

280

310

309

340

368

376

355

299

256

240

212

202

224

245

269

*212

148

125

1ST 

154 

228

276

318

333

318

293

283

7,856

262

15,580

Calendar year 1955: Max - Kin - Mean - Ao-ft -

Water year 1955-56: Max 15,600 , Mln 2 .5 Mean 936 Ao-ft 679, 1OO

Peak discharge (base, 1.900 ofs) . Dec. 19 (4 p.m.) 12,2OO cfs (10.07 ft); Dec. 22 (2 p.m.) 19,30O 

cfs (11.33 ft); Jan. 8 (3 a.m.) 4.16O cfs (7.63 ft); Jan. 10 (11 p.m.) 4,010 cfs (7.55 ft); Jan. 15 

(6 p.m.) 9,320 cfs (9.43 ft); Jan. 23 (5 a.m.) 3,390 cfs (6.87 ft); Jan. 26 (9 a.m.) 4,560 cfs 

(7.62 ft); Feb. 22 (3:30 a.m.) 14,200 cfs (10.47 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

Note. Doubtful or no gage-height record Oct. 8-20, 27-31, Nov. 3-8, 12-19; discharge estimated on 

basis-assumed leakage through dam and gates above gage.
SACRAMENTO RIVER BASIN 407

Stony Creek near Hamilton City, Calif.

on.--Lat 39e 43'20", long 122 e 03'10", in Capay Grant, on right bank 2.3 miles southwest of Hamilton City, 6 miles upstream from mouth, and 8 miles east of Orland, Olenn 

County.

Drainage area.--764 sq mi.

Records available. January 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 160 ft (from topographic map). Prior to 

February 1946, at site 3 miles upstream at different datum.

Average discharge. 15 years, 346 cfs (250,500 acre-ft per year).

Extremes. Maximum discharge during year, 22,100 cfs Dec. 22 (gage height, 15.96 ft); no 

flow during several months.

1941-56: Maximum discharge, 37,500 cfs Mar. 1, 1941 (gage height, 6.35 ft, site and 

datum then in use); no flow at times each year.

__. Records good. Plow regulated by East Park Reservoir beginning in 1910 (usable 

capacity, 50,620 acre-ft) and Stony Gorge Reservoir beginning in 1928 (usable capacity, 

50,100 acre-ft). Diversions for irrigation of about 17,200 acres above station in 

Orland project, Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

IS

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

(*)

( )

(*)

0

0

0

Nov.

0

0

0

Dec.

0

(5

0

0

0

0

0

0

0

0

0

*0 

0

0

0

0

0

0

4,130

*5,800

*1,740

* 13. 800 

15.900

9,250

5,050

4,280

4,090

3,970

2,220

1,740

*1,540

72,510

2,339

143,800

Jan.

1,840

1,640

1.220

1,300

2,260

2,050

2,510

4,100

2,980

3,030

3,900

3,310 

2,990

5,500

8.620

7,940

5,510

4,260

3,530

3,390

3,490

2,980 

3,460

*3,080

3,070

4,180

4,940

4,550

3,550

2,720

2,240

109,940

3,546

218,100

Feb.

1,450

1,600

1,500

1,010

880

804

786

930

1,040

1,040

1,000

990 

960

*686

642

694

600

565

60T

1,960

9,760

* 16. 800 

* 13, 600

*8,260

5,350

4,110

3,570

2,870

2,580"

86,444

2,981

171,500

Mar.

2.Z80

2,080

1,960

1,900

1,800

1,640

1,490

1,390

1,320

*1,270

1,200

1,130 

1,070

1,040

970

890

795

710

488

405

*342

329 

296

280

3T2

390

448

488

537

544

512

30,306

978

60,110

Apr.

482

437

375

216

iii

164

212

272

508

529

437

m726

7 IS

686

*702

702

635

593

558

500 

476

454

459

558

670

649

600

551

15,160

505

30,070

May

506

506

494

579

694

804

930

900

831

851

795

718 

642

565

420

324

264

226

202

ISO

188

*177 

177

205

205

174

158

116

86

58

49

13,004

419

25,790

June

38

39

35

47

49

57

3?

30

21

12

9.2

6.3 

5.3

7.9

16

20

20

31

26

46

33

24 

19

8.3

*5.0

4.0

2.5

1.3

.4

0

652.2

21.7

1,290

July

0

1.5

4.7

5.3

9.7

4.5

4.3

2.0

1.9

.8

.2

.6 

.8

6.3

6.0

~6.0 13

2.0

.8

0

0

0 

*0

0

0

0

0

3.6

7.1

9.2

2 .6

92.9

3.00

184

Aug.

0.1

0

3

0

0

^ff

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

0 

0

0

0

0

0

0

0

0

0

2.5

0.08

5.0

Sept.

(*)

0

0

0

Calendar year 1955: Max 15,900 Mln 0 Mean 226 Ac-ft 163,700

Water year 1955-56: Max 16,800 Mln 0 Mean 896 Ac-ft 650,800

Peak discharge (base, 2.000 efs). Dec. 20 (1 a.m.) 11,300 cfs (13.33 ft); Dec. 22 (9 p.m.) 22,100 

cfs (15.96 ftjj Jan. 1 (4 p.m.) 2,460 cfs (9.20 ft); Jan. 5 (10 a.m.) 2,440 cfs (9.18 ft) ; Jan. 8 

(3 a.m.) 4,470 cfs (10.63 ft); Jan. 11 (2 a.m.) 4,120 cfs (10.41 ft); Jan. 16 (4 a.m.) 10.300 cfs 

(13.19 ft); Jan. 27 (6 a.m.) 5,190 cfs (11.05 ft); Feb. 22 (10 a.m.) 17,900 cfs (14.92 ft).

* Discharge measurement or observation of no flow made on this day.
408 SACRAMENTO RIVER BASIN

Sacramento River at Butte City, Calif.

Location. Lat 39°27i35", long 121°59'35", in NE^ sec. 32, T. 19 N., R. 1 W., on left bank 

0.5 mile south of Butte City.

Records available. April 1921 to October 1939 (low-water periods only) and June 1940 to 

September 1956 in reports of Geological Survey. 1939-56 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Datum of gage is set to datum of Corps of Engineers. Prior 

Eo December 1930, at site 0.5 mile upstream at same datum.

Average discharge.--16 years (1940-56), 12,600 cfs (9,122,000 acre-ft per year).

Extremes.--Maximum discharge during year, 149,000 cfs Jan. 16 (gage height, 94.66 ft); minimum, 4,610 cfs Oct. 17.

1940-56: Maximum discharge, 170,000 cfs Feb. 7, 1942 (gage height, 96.87 ft), from 

rating curve extended above 100,000 cfs.

1921-56: Minimum discharge recorded, 1,050 cfs July 15, 25, 26, 1931 (gage aeight, 

67.49 ft).

Remarks. Records good. Natural flow of stream affected by storage reservoirs, power developments, bypassing for flood control, diversions for irrigation, and return flow from 

irrigated areas. Records of chemical analyses and water temperatures for the water 

year 1956 are given in WSP 1453.

Cooperation. Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

5,130

5,130

5,110

5,090

5,050

5,050

5,030 

5,170

5,230

*5, 270

5,430

5,550

5,570

5,190

5,050

5,030

4,970 

4,970

4,990

5,010

5,050

5,090

5,090

5,050

5,090

*5,070

5,030

5,030

5,070

5,010

5,030

158,630

5,117

314,600

Nov.

5,050 

5,090

5,070

5,070

5,170

5,210

*5,170 

5,190

5,210

5,170

5,010

4.990

5,170

6,010

6/030

6,070

6,140 

*5,820

5,780

6,160

12,100

16.500

8,540

8,140

8,450

7,000

6,390

6,050

5,900

5,800

193,250

6,442

383,300

Dec.

5,530 

5,430

5,370

5,010

4,990

13,700

31,100 

13,000

10,700

13,800

9,720

*7,980

7,290

6,800

6,430

6,200

7,380 

16,500

45,600

87,200

84,900

66,200

122,000

130,000

89,600

64,100

79,800

*79,700

69,200

61,000

57,700

1,213,930

39,160

*2,408

Jan.

56, 500 

55,500

55,500

55, 200

54,600

52,100

45,400 

59,300

*68,700

56,500

70,000

66,300

57,700

68,500

115,000

145,000

116,000 

86,300

73,900

56,900

62,200

57,700

57,500

*61,200

56,700

69,500

72,700

63,000

56,300

49,700

45, 500

tZftGG.S

66,670

*4,100

Feb.

40,400 

35, 500

31,400

27,500

24,200

21,600

20, 600 

18,900

18,200

17,500

17,000

16,500

*16,200

15,800

15,400

14,900

14,600 

13,400

12,900

15,400

36,900

69,900

*115,000

*103, 000

84,100

67,700

*61,300

61,700

53,800

tt.,061.3

36,600

*2, 105

Mar.

46.700 

4J,S60

38,900

32,900

27,900

23,700

21,400 

20,000

18,600

17,700

17,200

*16,800

16,300

16,000

15,800

15, 500

14,900 

14,000

13,600

*13,500

13,400

13,200

13,100

12, 800

12,700

12,700

12,600

12,200

12,000

11,600

Ilj50_0

582,700

18,800

*1,156

Apr.

11,000 

10)200

9,450

8,910

8,780

8,690

8,610 

8,540

*8,430

8,390

8,470

9,270

*10, 300

9,780

9,520

9,220

8,910 

8,780

8,690

8,520

8,030

8,030

7,840

7,790

7,810

7,900

8,170

7,810

7,400

7,110

260,350

8,678

516,400

May

7.070 

7,260

7,420

8,190

11,200

14,500

*17,300 

18,400

19,800

19,000

18,800

20. 800

18,800

17,100

16,200

15,700

15,500 

15,300

15,300

15,700

16,700

16,400

15,500

15,400

14, 200

13,400

13,000

*11,600

10,900

10,700

10,700

447,480

14,450

888,300

June

11.200 

11,000

10,700

10,700

10, 600

10,300

10, 100 

9,510

9,200

8,960

*8, 770

a8, 400

a8, 000

a7,800

a7,700

a7,800

a7,600 

7,400

7,330

7,400

7,400

*7,230

7,040

6,970

6,850

6,730

6,620

6,540

6,970

7,060

249,880

8,329

495,600

July

7,060 

7,060

7,020

6,900

6,870

6,800

6,760 

7,020

*7,040

7,060

7,060

7,740

8,000

8,020

8.140

8,100

8,020 

7,950

7,950

7,880

7,860

7,880

7,900

*7,760

7,740

7,710

7,640

7,860

7,760

7,690

7,660

233,730

7,540

463,600

Aug.

7.620 

7,090

6,780

6,760

6,780

6,800

6,800 

6,800

6,800

6,730

6,670

6,670

*6,710

6,690

6,620

6,670

6,600 

6,620

6,710

6,760

6,760

6,690

*6,780

- 6,800

6,820

6,850

6,800

6,820

6,820

6,780

6,670

210,270

6,783

417,100

Sept.

6,780 

6,540

6.470

eyito"

6,540

6,560

6,580 

6,800

6,900

*6,900

7,020

7,040

7,140

7,260

7,450

7,450

7,540 

*7,690

7,740

7,860

8.000

7,980

7,900

7,900

7,880

7,760

7,860

7,830

7,810

7,810

219,530

7,318

435,400

Calendar year 1955: Max 130,000 Mln 4,630 Mean 9,987 Ao-ft 7,231,000

Water year 1955-56: Max 145,000 Mln 4,970 Mean 18,850 Ao-ft 13,680,000

* Discharge measurement made on this day.

* Expressed In thousands.

a No gage-height record; discharge estimated on basis of records for station at Colusa
SACRAMENTO RIVER BASIN 409

Sacramento River at Colusa, Calif.

Location.--Lat 39°12'50", long 121 0 59'55", at north end of Jimeno Grant, on right bank just 

downstream from highway bridge at Colusa, Colusa County, and at mile 89.4 upstream from 

Sacramento.

Records available. April 1921 to October 1939 (low-water periods only) and June 1940 to 

September 1956 in reports of Geological Survey. 1939-56 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Datum of gage is set to datum of Corps of Engineers. Prior 

To December 1930, water-stage recorder in center fender pier 50 ft upstream from bridge 

at same datum.

Average discharge. 16 years (1940-1956), 10,600 cfs (7,674,000 acre-ft per year).

Extremes. Maximum discharge during year, 43,200 cfs Jan. 17 (gage height, 66.90 ft); minimum, 4,870 cfs Nov. 12.

1940-56: Maximum discharge, 49,000 cfs Feb. 8, 1942 (gage height, 69.20 ft).

1921-56: Minimum discharge recorded, 820 cfs July 25, 26, 1931 (gage height, 34.79 

ft).

Remarks. Records good. Natural flow of stream affected by storage reservoirs, power development, bypassing for flood control, and diversions for irrigation, and return flow 

from irrigated areas.

Cooperation. Records collected and prepared in cooperation with California Department of 

Water Resources.

Revisions (water years).--WSP 1345: 1952.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used May 6-29, June 1 to Sept. 18)

40.1

43.0

47.0

57.0

67.0

4,99O

7,540

11,700

23,600

43,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

AC-ft

Oct.

5,250

5,240

5,200

5,200

5,190

5,180

5,170

5,190

5,280

*5,340

5,430

5,570

5,660

5,590

5,350

5,260

5,200

5,160

5,160 

5,180

5,220

5,250

5,260

5,270

*5,280

5,240

5,240

5,230

5,260 

5,210

5,270

163,530

5,275

324,400

Nov.

5,240

5,130

5,120"

5,100

5,160

5,210

*5,230

5,200

5,240

5,220

5,110

5.050

5,060

5,650

5,950

5,980

6,110

*5,860

5,780 

5,950

8,060

16.200

10,800

7,890

8,520

7,400

6,680

6,310

6,080 

6,000

192,290

6,410

381,400

Dec.

5,830

5,590

5,620

5,320

5.200

6,89O

22,400

20,9OO

12,000

13,100

11,3OO

*8,820

7,790

7,250

6,840

6,5OO

6,600

10,300

23,400 

35,OOO

*38,400

36,800

39,100

*42.00O

40,600

37,900

37,500

38,400

*37,800 

36,8OO

36,200

648,150

20,910

*1,286

Jan.

35, BOO

35,70O

35,300

35,500

35,30O

35,200

33,800

34,500

*37,200

*35,900

36,400

37,300

36,2OO

36,000

39,4OO

42,400

*42.500

40,100

38,600 

36,500

35,800

36,400

*35,300

36,200

35,7OO

36,400

37,500

37,100

36,000 

34,600

33.400

*1,134

36,580

*2,249

Feb.

32,300

30,800

29,600

28,100

25,800

22,800

21,OOO

19,900

18,7OO

18,000

17,400

16,900

*16,6OO

16,300

15,900

15,4OO

15,000

14,300

13.500 

14,000

22,80O

34,200

39,80O

*41,000

39,400

37,900

36,30O

*36,30O

35,600

725,500

25,020

*1,439

Mar.

55,800

32,900

32,000

3O,60O

28,800

26,50O

23,1OO

21,400

20.1OO

19,000

18 , 10O

*17,5OO

16,900

16,500

16,200

15,800

15,300

14,600

14,100 

13,900

*13,900

13,800

13,700

15,500

13,300

13,200

13,200

12,900

12,600 

12,300

11,900

571,400

18,430

*1,133

Apr.

11.70O

11,10O

10,200

9,75O

9,420

9,180

9,100

9,050

*9,080

9,03O

9,090

9,550

10,300

10,400

10,100

*9,780

9,450

9,240

9,160 

8,910

8,620

8,340

8,260

8,110

8,040

8,150

8,500

8,280

7,910 

7,650

274,990

9,166

545,400

May

7,380

7,500

7,580

7,750

9,000

12,600

*16,500

17,900

19,800

20,100

19,3OO

21,000

20,800

19,300

17,700

16,800

16,300

15,900

15,800 

15,900

*16,700

17,200

16,600

16,000

15,300

14,200

13,300

12,200

10,800 

10,300

10,000

457,510

14,760

907,500

June

10,300

10,300

10,100

10,000

10,000

9,780

9,480

9,250

8,750

8,55O

*8,420

8,020

7,630

7,450

7,560

7,520

7,55O

7,180

7,070 

7,110

7,180

7,020

6,840

6,760

6,680

6,570

6,460

6,590

6,610 

6,780

238,910

7,964

473,900

July

6,800

6,760

6,700

6,64O

6,600

6,540

6,480

6.630

*6,740

6,740

6,740

7,050

7,390

7,480

7,570

7,560

7,530

7,490

7,450 

7,400

7,370

7,390

*7,420

7,30O

7,210

7,190

7,19O

7,180

7,200 

7,190

7,190

220,120

7,101

436,600

Aug.

7.180

6,950

6,560

6,480

6,480

6,550

6,54O

6,500

6,530

6,480

6,450

6,460

*6,460

6,440

6,420

6,390

6,380

6,370

6,450 

6,470

6,500

*6,450

-6,510

6,530

6,540

6,560

6,560

6,530

6,560 

6,57O

6,480

202,330

6,527

401,300

Sept.

6,500

6,420

6,290

6,350

6,320

6,370

 6 , 440

6,640

6,730

*6,780

6,880

6,93O

6,980

7,100

7,550

7,460

7,470

7,600

7,740 

7,790

7,970

8.000

7,960

*7,93O

7,910

7,820

7,820

7,840

7,770 

7,810

216,950

7,232

430,300

Calendar year 1955: Max 42,000 Mln 4,510 Mean 8,327 Ac-ft 6,029,000

Water year 1955-56: Max 42,500 Mln 5,050 Mean 13,790 Ac-ft 10,010,000

Discharge measurement made on this day. 

Expressed In thousands. .
410 SACRAMENTO RIVER BASIN

Butte Creek near Chlco, Calif.

Location. Lat 39°43'34", long 121°42'28", in NW£uw£ sec. 36, T. 22 N., R. 2 E., on right 

bank 0.7 mile downstream from Little Butte Creek and 7.5 miles east of Chioo.

Drainage area. 148 sq mi.

Records available.--November 1930 to September 1956.

gage. Water-stage recorder. Altitude of gage is 320 ft (from topographic map). Prior to 

Aug. 13, 1944, at site 0.4 mile upstream at different datum.

Average discharge. 25 years (1931-56), 401 cfs (290,300 aere-ft per year).

Extremes. Maximum discharge during year, 18,700 cfs Dec. 22 (gage height, 13.35 ft), from 

rating curve extended above 6,900 cfs on basis of slope-area determination of peak flow; 

minimum, 47 efs Nov. 15.

1930-56; Maximum discharge, that of Dec. 22, 1955; minimum, 10 cfs Nov. 29, 1952. 

Revisions. The maximum discharge for the water year 1953 has been revised to 10,300 

efs Jan. 9, 1953 (gage height, 10.10 ft), superseding figure published in VJSP 1285.

Remarks. Records good. Records of chemical analyses for the water year 1956 are given in 

WSP 1453. Flow slightly regulated by storage in Magalia Reservoir (capacity, 3,540 

acre-ft). Diversions above station for irrigation and domestic use of about 4,200 

acre-ft annually. Butte Creek receives considerable water above station from West 

Branch Feather River by way of De Sabla and Centerville powerplants. Pacific Gas & 

Electric Co. has furnished the following record of this flow for water year 1956:

Month

March.............

April.............

Mean discharge 

(cfs)

38 1

48 9

79.6

96.3 

101

Runoff in 

acre -feet

4 850

4,582

5,920 

6,006

Month

Water year 1955-56

Mean discharge 

(cfs)

68.4

71.3

Runoff in 

acre-feet

5,300

4,472

3,703

4,072

51,779

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Jan. 7-15)

2.0 

2.2 

2.5 

3.0 

3.5

72 

127 

249 

50O 

795

4.5 

6.0 

8.0

11.0

1,610

3,180

6,1OO

12,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

124

131

147

135 

143

103

118

124

147

124

159

IK

100

100

100

109

97

*100

94

112

112

92 

90

106

92

106

121

109

106 

103

103

3,522

114

6,990

Nov.

106

106

103

103 

106

112

106

1O6

109

92.

103

109

127

143

127

*131

147

127

179

330

390

25tf 

228

191

175

159

155

159

159

1 j.oy RQ

4,575

152

9,070

Dec.

191

220

167

159 

IS5

856

425

295

430

330

272

215

*232

215

203

203

305

1,050

6,150

*5,310

4,390

*12.000 

9,780

3,860

2,460

4,990

3,190

*2,O20

1,490 

1,210

1.09O

63,897

2,061

126,700

Jan.

1,060

940

830

555 

1,270

1,150

3,000

3,140

2,030

1,880

1,700

1,430

1,950

*4,180

«6,270

3,970

2,370

1,750

1,490

1,500

1,430

1,460 

1,500

1,270

1,380

1,730

1,460

1,210

1.O9O 

992

925

57,312

1,849

113,700

Feb.

844

802

762

730 

700

670

640

628

599

610

588

566

555

*544

522

500

494

55B~ 489

1,910

3,050

8.450 

*5,670

*2,580

2,OOO

1,560

1,270

1,110

1,010

40,408

1,393

80,150

Mar.

515" 955

865

865 

823

750

700

694

670

67O

652

628

622

628

616

604

622

652

628

*604

604

640 

664

682

694

724

658

652

652 

652

664

21,444

692

42,530

Apr.

634

604

582

572 

577

566

582

594

616

640

664

652

616

604

582

*572

550

544

577

616

652

652 

694

700

70O

743

651

646

634

646

18,7O5

624

37,100

May

622

634

700

' 1.100 9&'2

970

837

750

718

694

8O9

706

646

616

604

610

616

616

616

622

*634

640

646

622

599

588

572

'525' 528

533

coo Ocb

2O,866

673

41,390

June

489

472

462

456 

425

405

395

390

390

380

370

360

345

345

370

340

320

300

315

310

290

272 

263

258

*258

249

245

249

236 

232

10,191

340

20,210

July

228" 228

224

22O 

215

£15

211

211

207

207

203

203

199

199

195

191

187

187

167

173

171

167 

159

*163

167

167

167

155

155

159

159

5,863

189

11,630

Aug.

159

155

159

159 

159

159

15S

147

155

155

155

143

151

151

151

139

155

147

155

147

147

147 

155

147

143

147

147

147

147 

135

1*7

4,669

151

9,260

Sept.

147

147

147

139 

143

135

ISI

151

135

143

151

135

143

147

147

139

139

147

175

«191

167

171 

159

159

167

159

167

163

167 

159

4,574

152

9,070

Calendar year 1955: Max 12,000 Min 90 Mean 4O1 Ac-ft 290,300

Water year 1955-56: Max 12,000 Min 90 Mean 700 Ac-ft 507,800

Peak discharge (base. 2,700 cfs).--Dee. 19 (8 p.m.) 10,300 cfs (10.10 ft)j Dec. 22 (2:30 a.m.) 

18,700 cfs (13.35 ft); Dec. 26 (1 p.m.) 7,880 cfs (8.94 ft); Jan. 7 (7 p.m.) 5.710 cfs (7.54 ft)j 

Jan. 15 (7 p.m.) 7,400 cfs (8.70 ft)j Feb. 22 (8:30 p.m.) 13,100 cfs (11.22 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 411

Sacramento River below Wilkins Slough, Calif.

Location. Lat 39°00'35", long 121°49'25", in Jimeno Grant, on right bank 1,500 ft downstream from Wilkins Slough, Colusa County, 6 miles southeast of Grimes, and at mile 

62.9 upstream from Sacramento.

Records available. August 1931 to October 1939 (low-water periods only) and June 1940 to 

September 1956 in reports of Geological Survey. 1939-56 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Gage is set to datum of Corps of Engineers. 

Average discharge. 16 years (1940-56), 9,254 cfs (6,700,000 acre-ft per year).

Extremes. Maximum daily discharge during year, 26,300 cfs Jan. 17; minimum, 4,900 cfs 

Oct. 28 (gage height, 26.26 ft).

1940-56: Maximum discharge 26,600 cfs Feb. 8, 1942 (gage height, 52.29 ft). 

1931-56: Minimum discharge recorded, 100 cfs Aug. 1, 1931 (gage height, 14.20 ft).

Remarks. Records good. Natural flow of stream affected by storage reservoirs, power developments, bypassing for flood control, and diversions for irrigation and return flow 

from irrigated areas.

Cooperation. Records collected and prepared in cooperation with California Department of 

water Resources.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18 

19

20

21

22

23

24

25

26

27

28 

29

50 

31

Total

Mean

Ae-ft

Oct.

5,140 

5,120

5,110

5,090

5.O7O

5,060

5,070

5.O70

5,180

5,290

5,420

*5,510

5,610

5,570

5,28O

5,140

5,080 

5,010 

5.000

5,000

5,070

5,100

5,130

5,140

*5,140

5,120

5,010

5,000 

5,040

5,080 

5,070

159,720

5,152

316,800

Mov.

5.050 

5,040

5,070

5,080

5,090

5,160

5,220

5,180

*5,200

5,220

5,140

5,050

5.O4O

5,420

6,140

6,260

6,320 

6,250 

6,120

6,160

6,670

12,400

15.100

9,490

8,730

8,340

8,160

*6,800 

6,430

6* 290

195,600

6,520

388,000

Dec.

6,150 

5,740

5,620

5,480

5,240

5,37O

14,100

2O,2OO

15,500

12,700

12,800

10,700

9,170

 8,550

7,760

7,550

6,990 

8,460 

16,200

22,700

24,200

24,500

25,200

26,000

26.100

*25,600

25,000

25,100 

25,000

24 t 600 

24,300

481,940

15,550

955,900

Jan.

24,000 

25,900

25,800

25,800

25,700

23,700

23,400

23,400

24,000

*25,9OO

25,900

24,100

24,000

24,000

24,600

25,700

26.500 

26,200 

25,700

25,200

24,600

24,400

24,200

24,200

24,200

*24,000

24,300

24,300 

24,000

23 > 700 

25.500

752,500

24,270

*1,495

Feb.

25,000 

22,700

22,500

22,300

22,000

21.4OO

20,800

20,400

19,500

18,600

17,800

17 , 3OO

16,800

16,5OO

*16,100

15,600

15,500 

14,800 

14,100

15,900

17,700

22,500

25,800

24,800

24,900

24,500

24,100

*25,800 

25,700

581,200

20,040

*1,155

Mar.

25.50O 

23,000

22,800

22,600

22,300

22,000

21,400

20,900

2O,300

19,500

18,700

18,OOO

17,400

*17,000

16,600

16,300

16.OOO 

15,400 

14,900

14,700

*14,600

14,5OO

14,500

14,100

15,9OO

15,8OO

15,800

15,700 

15,400

15,000 

12.500

554,700

17,250

*1,061

Apr.

12.500 

11,700

10, 900

10,500

9,770

9,360

9,030

9,000

9,05O

9,010

*9,110

9,470

10,200

10,600

10,500

10,200

9,890 

9,610 

9,390

9,160

8,810

8,380

8,240

8,O70

7,960

8,000

8,220

8,520 

8,510

7.860

280,920

9,364

557,200

May

7,340 

7.190

7,290

7,520

8,64O

11,300

15,900

15,600

*16,900

17,700

17,400

17,900

18.500

*17,500

15,900

14,90O

14,400 

14,000 

14,000

14,100

14,500

15,200

15,100

14,800

14,700

15,900

15,400

12,700 

11,500

10,600 

10,200

418,580

13,500

830,200

June

10,200 

10.500

10,100

9,960

9,850

9,69O

9,300

8,99O

8,430

8,110

7,800

7,460

6,840

*6,460

6,270

6,36O

6,520 

6,170 

6,OOO

5,97O

6,150

6,020

5,810

5,640

5,570

5,460

5,550

5.150 

5,220

5,500

216,390

7,215

429,200

July

5,550 

5,570

5,490

5,580

5,560

5,540

5.290

5,540

5,520

5,520

*5,49O

5,620

6,080

6,500

6,490

6.520

6,500 

6,490 

6,44O

6,580

6,52O

6,540

*6,590

6,300

6,16O

6,160

6,16O

6,130 

6,140

6 1 160 

6,140

185,070

5,970

367,100

Aug.

6.090 

5,96O

5,570

5,540

5,320

5,390

5,410

5,420

5,43O

5,460

5,46O

5,480

5,46O

5,470

5,43O

*5,39O

5,360 

5.500 

5,580

5,550

*5,380

5,410

5,480

5,510

5,570

5,600

5,710

5,680 

5,700

5,760 

5,760

171,030

5,517

359,200

Sept.

5,750 

5,870

5.740

5,780

5,840

5,940

6,060

6,300

6,580

6,8OO

6,960

7,150

7,280

*7,440

7,68O

7,930

7,970 

8,06O 

8,200

8,500

8,40O

8.500

8,490

8,440

8,560

8,250

*8,150

8,100 

7,990

7,970

220,260

7,542

456,900

Calendar year 1955: Max 26,100 Mln 3,800 Mean 7,489 Ac-ft 5,422,000

Water year 1955-56: Max 26,300 Mln 5,000 Mean 11,470 Ac-ft 8,328,000

* Discharge measurement made on this day.

* t Expressed in thousands.

Mote. No gage-height record Jan. 14-26; discharge estimated on basis of records for station at

lusa.
412 SACRAMENTO RIVER BASIN

Sacramento River at Knights Landing, Calif.

Location. Lat 38°48'10", long 121°42'55", in NEij sec. 14, T. 11 N., R. 2 E., on left bank

 Just upstream from Southern Pacific Railroad bridge at Knights Landing, 13.1 miles upstream from Feather River and at mile 34.0 upstream from Sacramento.

Records available.--April 1921 to October 1939 (low-water periods only) and June 1940 to

 September 195B in reports of Geological Survey. 1939-56 in reports of California Department of Water Resources.

Gage. Water-stage recorder. Gage is set to datum of Corps of Engineers. Prior to Dec. 9, 

~]T930, in fender pier of railroad bridge at same datum. Since Aug. 16, 1945, auxiliary

water-stage recorder at datum of Corps of Engineers 6.0 miles downstream from base gage;

Jan. 1, 1941, to June 30, 1945, at site 14.4 miles downstream from base gage at datum

0.06 ft below datum of Corps of Engineers.

Average discharge.--16 years (1940-56), 9,751 cfs (7,059,000 acre-ft per year).

Extremes.--Maximum discharge during year, 27,800 cfs Dec. 24; maximum gage height, 41.26 

ft Dec. 23; minimum daily discharge, 5,470 cfs Dec. 6; minimum gage height, 16.00 ft 

Oct. 6.

1940-56: Maximum discharge, 27,900 cfs Feb. 9, 1942; maximum gage height, 41.83 ft 

Feb. 8, 1942.

1921-56: Minimum discharge recorded, 250 cfs July 23, 1931 (gage height, 7.80 ft).

Remarks.--Records excellent. Natural flow of stream affected by storage reservoirs, power 

developments, bypassing for flood control, diversions for irrigation, and considerable 

return flow from irrigated areas. Records of chemical analyses and water temperatures 

for the water year 1956 are given in WSP 1453.

Cooperation.--Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, in cubic feet per second, water year October 1955 to September 1566

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30 

31

Total

Mean

Ac- ft

Oct.

5,770 

5,730

5,770

5,770

5,770

5,740

5,800

5,680

5,730

5,920

6,130

*6,170

6,270

6,260

6,080

5,820

5,750

5,610

5,670

5,610

5,750

5,740

5,730

5,830

5,810

5,760

5,660

*5,560

5,790 

5,620 

5,700

180,000

5,806

357,000

Nov.

5,670 

5.610

5,650

5,680

5,670

5,780

5,870

5,840

*5, 800

5,800

5,790

5,730

5,700

5,920

6,780

7,040

6,990

7,010

6,750

6,730

7,000

11, 100

*15.200

11, 400

9,680

9,370

8,310

7,660

7,130 

6,860

215,520

7,184

427,500

Dec.

6,770 

6,350

6,140

5,980

5,780

5.470

11,400

22,800

18,000

13,700

14, 400

12,900

10,800

*9,420

8,600

7,990

7,530

8,320

13,600

21,400

25,000

25,000

25,000

26,300

26,600

*24,900

23,800

23,600

24, 200 

24,700 

24, 800

491,250

15,850

974,400

Jan.

24, 700 

24,800

*24,500

24,700

24, 600

24, 200

24, 200

23,800

24,500

24,800

24,500

24,800

*24,600

24, 400

24, 400

24,000

24,800

25,500

25,300

25,200

24, 500

24,800

24,500

24,400

24,500

24,700

*25,000

25,500

25,200 

24,600

25.700

763,700

24,640

*1,515

Feb.

23,600 

23,400

22,900

22,700

22,400

21,700

21,000

20,500

19,900

19,300

18,200

17,600

17,300

17,100

*16,300

16,100

15,800

15, 300

14, 600

14,400

16,300

23,600

24,100

25, 200

26.000

25,600

25,000

*24, 500

24,400

594,800

20,510

*1,180

Mar.

24,500

23,700

23,500

25,500

25,100

22,600

22,200

21,600

21,400

20,900

19,700

18,700

17,400

*17,400

17,100

17,000

16,900

16,200

15,500

15,000

14,900

*14,800

14,700

14,400

15,800

14,100

14,400

14,000

15,900 

15,700

15.200

555,400

17,850

*1,098

Apr.

15.100

12,600

11,800

11,500

10,900

10,500

10, 100

9,800

9,850

9,680

*9,750

9,770

10,700

11,500

11,200

11,100

10, 700

10,500

10,200

*9,750

9,160

8,580

8,240

7,760

7,450

7,450

7,700

8,120

7.190 

8,440

294,670

9,822

584,500

May

7,840 

7,270

6,850

6,760

6.060

8,840

11,700

14,400

*16,000

17,500

17,100

17,700

18.800

18,300

16,000

14,900

14,100

15,800

15,700

15,900

14,500

14,700

*14,800

14,500

14,000

12,500

10,900

10,000

11,100 

10,600

10,400

598,700

12,860

790,800

June

10,500 

10,800

10, 800

10,600

10,500

10,600

10,400

10,100

9,580

9,140

8,790

8,510

7,800

*7,510

7,180

7,240

7,160

7,240

6,950

6,750

7,120

*6,950

6,790

6,480

6,460

6,520

6,150

5,950

5,850 

6,010

241,790

8,060

479,600

July

6,150 

6,170

6,250

6,500

6,240

6,190

6.050

6,100

6,220

6,520

*6,150

6,510

6,660

7,090

7,570

7,500

,520

"7470

,590

* ,410

,250

,150

,410

,250

,980

,910

,780

,940

,000 

,050 

>, 900

210,460

6,789

417,400

Aug.

6,820 

6,720

6,550

6.110

6,110

6,260

6,410

6,550

6,410

6,470

6,550

6,610

6,580

6,660

6,550

*6,500

6,500

6,480

6,560

6,710

6,580

6,810

6,850

6,820

6,780

6,850

6.900

6,860

6,820 

*6, 860 

6,740

204,540

6,598

405,700

Sept.

6,950

7,6eo

7,080

,010

,160

,290

,520

,560

8,090

8,160

8,520

8,650

8,900

*9,190

9,450

9,770

9,660

9,710

9,910

9,820

10, 100

10,100

9,850

9,610

*9,040

8,950

8,750

8,730

8,710 

8,590

259,850

8,662

515,400

Calendar year 1955: Max 26,600 Min 4,030 Mean 8,212 Ac-ft 5,945,000

Water year 1955-56: Max 26,600 Min 5,470 Mean 12,050 Ac-ft 8,745,000

* Discharge measurement made on this day.

* Expressed in thousands.
SACRAMENTO RIVER BASIN 413

Big Grizzly Creek near Portola, Calif.

Location (revised) . Lat 39 0 52'42", long 120°27'55", in NW^NE^ sec. 12, T. 23 N., R. 13 E., 

on left bank 4.8 miles north of Portola and 5.4 miles upstream from mouth.

Drainage area. 44.6 sq mi.

Records available. October 1925 to September 1932, October 1950 to September 1953, June 

1954 to September 1956. Prior to October 1952, published as Grizzly Creek near Portola.

Gage. Water-stage recorder. Altitude of gage is 5,580 ft (from topographic map). 

0~ct. 26, 1925, to Sept. 30, 1932, at datum 2.04 ft higher.

Average discharge. 12 years (1925-32, 1950-53, 1954-56), 41.2 cfs (29,830 acre-ft per 

year); median of yearly mean discharges, 35 cfs (25,300 acre-ft per year).

Extremes. Maximum discharge during year, 2,140 cfs Dec. 22 (gage height, 8.10 ft), from 

rating curve extended above 400 cfs on basis of slope-area determination at gage height 

7.48 ft; minimum, 0.5 cfs Oct. 1-6.

1925-32, 1950-53, 1954-56: Maximum discharge, 2,680 cfs Mar. 26, 1928 (gage height, 

7.50 ft, datum then in use), from rating curve extended above 330 cfs; minimum, 0.1 cfs 

many days in 1931, 1955.

Remarks. Records good except those for periods of ice effect, which are fair. No storage 

above station. Diversions for irrigation of about 400 acres above station.

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used July 26 to Aug. 27)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

0.2 

.3

1.0

1.4

0.5 

1.1

2.0 

2.5 

3.0 

4.0 

5.0 

7.0

70

116

186

385

680

1,530

0.74 

.8 

.9

1.0

1.1

1.2

1.3 

1.5

0.8

.9

1.2

1.6

2.0

2.9

4.6

11

1.7 

2.0 

2.5 

3.0 

4.0 

5.0 

7.0

37

85

150

342

630

1,520

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.5

.5

.5

.5

.5

.5

.7

.6

.6

.9

i^

.9

.8

.7

.7

.8 

.9

.9

1.0

*.8

1.0

1.0

.8

.8

.8

1.1

1.2

1.2

1.1

1.0

1.0

25.5

0.82

51

Nov.

1.0

.9

iTo

1.0

1.2

1.2

1.2

1.2

1.1

1.1

1.1

1.0

.9

1.0

1.0

1.0 

1.4

1.4

2.2

5.3

~3.7 10

2.1

1.6

1.6

1.7

1.9

2.1

*2.4

2.1

56.4

1.88

112

Dec.

2.5

2.1

1.6

1.6

1.6

4.1

5.0

3.9

3.1

2.2

2.5

2.7

2.1

2.2

2.1

2.5 

3.9

3.5

8.8

172

775

1,480

1,350

436

273

320

380

212

146

111

97

5,810.0

187

11,520

Jan.

76

68

59

43

48

50

34

30

43

39

40

42

47

80

243

391 

266

180

146

147

140

134

187

134

100

80

57

53

50

48

46

3,101

100

6,150

Feb.

43

40

38

37

35

34

32

30

29

*28

27

26

25

24

22

21 

20

20

19

18

18

17

19

22

24

25

25

25

24

767

26.4

1,520

Mar.

24

24

25

26

26

26

26

26

28

29

30

31

32

34

35

38 

43

50

63

80

102

135

168

208

262

296

278

262

274

309

300

3,290

106

6,530

Apr.

243

206

185

192

*235

270

325

356

376

352

248

213

197

212

233

272 

323

368

429

442

445

448

434

408

354

356

264

250

243

244

9,123

304

18 , 100

May

241

235

230

453

294

285

264

212

203

*185

175

146

128

122

121

131 

141

148

158

167

180

184

194

185

168

154

142

132

120

121

138

5,757

186

11,420

June

~90 102

82

75

69

62

51

46

39

36

33

31

29

*28

33

31 

28

24

21

20

19

17

15

14

12

11

10

8.9

7.8

7 ?

t i C

1,051.9

35.1

2,090

July

6^

5.9

5.9

5.9

5.6

4.8

4.4

3.8

3.2

2.9

2.8

2.7

2.6

2.7

2.6

2.5 

*2.4

2.2

2.0

2.0

1.9

1.8

1.8

1.8

2.2

2.7

1.9-

1.7

1.5

1.3

iiS.

92.9

3.00

184

Aug.

1.2 n

1.1 1.1

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

1.0 *7§

.8 

.8

.9

.9

.9

.9

1.0

.9

.9

.9

.8

.8

.9

.9

.9

.9

30.0

0.97

60

Sept.

0.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.9

.9

.9

.8 

.8

.8

1.1

1.4

1.4

1.4

1.3

1.2

1.2

1.1

 1.1

1.2

1.2

1.2

29.7

0.99

59

Calendar year 1955: Max 1,480 Min 0.1 Mean 33.2 Ac-ft 24,000

Water year 1955-56: Max 1,480 Min 0.5 Mean 79.6 Ac-ft 57,800

Peak discharge (base. 410 cfs).--Dec. 22 (3 a.m.) 2,140 cfs (8.10 ft); Dec. 24 (5 p.m.) 506 cfs 

(4.62 ft); Dec. 26 (7 p.m.) 479 cfs (4.53 ft)j Jan. 15 (12 p.m.) 448 cfs (4.42 ft); Apr. 9 (9:30 p.m.) 

488 cfs (4.56 ft); Apr. 22 (6:30 p.m.) 672 cfs (5.12 ft); May 4 (7 a.m.) 560 cfs (4.80 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Jan. 8, Jan. 28 to Feb. 20 (no gage-height record 

Feb. 3-6).
414 SACRAMENTO RIVER BASIN

Middle Fork Feather River near Clio, Calif.

Location. Lat 39°45'10", long 120°35'40", in SE£ sec. 23, T. 22 N., R. 12 E., on left 

bank 0.6 mile upstream from Frazier Creek, 1.0 mile northwest of Clio, and 2.2 miles 

southeast of Blairsden.

Drainage area. 698 sq mi.

Records available. October 1925 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 4,380 ft (from topographic map). Prior 

to July 29, 1953, at site 0.5 mile downstream at different datum.

Average discharge. 31 years, 277 cfs (200,500 acre-ft per year).

Extremes. Maximum discharge during year, 14,400 cfs Dec. 23 (gage height, 15.77 ft), 

from rating curve extended above 6,300 cfs by logarithmic plotting; minimum, 12 cfs 

Oct. 7.

1925-56: Maximum discharge, that of Dec. 23, 1955; minimum, 4.3 cfs Sept. 5, 1934.

Revisions. Figures of maximum discharge for the water years 1930 and 1932 have been 

revised to 2,260 cfs Dec. 13, 1929 (gage height, 6.82 ft) and 3,290 cfs Mar. 20, 1932 

(gage height, 7.83 ft), superseding those published in WSP 706 and 736, respectively.

Remarks. Records good. Diversions for irrigation of about 40,000 acres above station, 

of which 14,500 acres receive supplemental water of about 7,000 acre-ft annually from 

Little Truckee River.

Revisions. Revised figures of discharge, in cubic feet per second, for the water years 

1928, 1930, and 1932, superseding those published in WSP 671, 706, and 736, are given 

herewith:

Date

1928

Mar. 27

28

29

30

31

Apr. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Discharge

7,640

4,970

2,810

1,750

1,270

1,040

995

808

1,040

1,110

1,290

1,420

1,350

1,240

1,110

995

928

824

736

660

646

646

597

541

502

458

416

386

359

318

3OO

Date

1928-Con.

Apr. 27

28

29

30

1929

Dec. 9

10

11

12

13

14

15

16

17

18

19

20

1930

Feb. 4

5

6

7

8

9

10

11

12

13

14

Discharge

292

282

275

280

319

687

396

1,450

1,760

1,200

1,240

938

548

506

410

322

272

298

341

383

449

479

548

660

724

740

740

Date

1930-Con.

Feb. 15

16

17

18

19

20

21

22

23

24

25

26

27

28

Mar. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Discharge

744

736

692

650

672

86O

878

1,110

1,160

1,140

887

684

688

550

464

434

455

642

848

900

946

918

954

1,010

1,010

1,040

1,050

1,010

914

840

756

Date

1930-Con.

Mar. 18

19

20

21

22

23

24

25

26

27

28

29

30

31

Apr. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Discharge

672

618

614

628

639

700

764

608

860

896

869

878

928

784

764

772

748

732

708

728

692

740

664

608

558

548

772

848

1,040

1,230

1,170

Date

1930-Con.

Apr. 18

19

20

21

22

23

24

25

26

27

28

29

30

1932

Mar. 17

18

19

20

21

22

23

24

25

26

27

28

29

30

Discharge

968

808

752

668

625

623

586

544

520

482

446

431

425

1,560

2,240

2,850

2,950

2,670

2,030

1,540

1,520

1,890

2,020

1,650

1,470

1,430

1,340

Month

March. ..........................

April...........................

Cfs-days

81,789

37,979

83,771

77,222

Maximum

7,640

1,760

1,230

2,950

Minimum

7

9

11

Mean

223

104

230

211

Runoff In 

acre-feet

162,000

75,300

166,000

153,000
SACRAMENTO RIVER BASIN 

Middle Pork Feather River near Clio, Calif.--Continued

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

415

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

2.0

2.1 

£.3 

2.6 

3.0 

3.5 

4.0 

5,0

12

16

£5

46

76

128

191

340

6.0

7.0

8.0

9.0

11.0

13.0

15.0

590

960

1,430

2,120

4,300

7,600

12,300

2.6

2.7 

3.0 

3.5 

4.0 

5.0 

6.0

22

29

54

104

172

358

640

7.0

8.0

10.0

12.0

14.0

15.0

1,060

1,600

3,380

6,000

9,800

12,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

13 

13

13

13 

13

13

13

13

13

24.

17

15

15

15

15

15

15

15

15

*15

16

16

16 

16

16

23

19

18

18

17 

17

485

15.6

962

Nov.

$

17

17 

18

18

18

18

18

18

17

17

18

20

21

22

24

29

35

96

82

42

38 

40

41

46

46

46

*47

46

949

31.6

1,880

Dec.

72 

55

52

49 

58

*181

80

73

99

95

93

85

80

73

67

71

76

145

*1,340

*1,160

2,440

6,830

11.500 

10,500

7,740

7,100

*6,020

4,050

2,380

2,160 

*1,580

66,304

2,139

131,500

Jan.

1,220 

970

902

839 

978

1,040

1,480

1,260

1,020

1,060

1,020

1,130

1,550

1,980

*3,640

5,850

3,770

2,990

2,060

1,730

1,580

1,480

1,510 

1,470

1,210

1,000

848

924

1,050

1,080 

974

47,615

1,536

94,440

Feb.

844 

710

622

566 

542

530

521

515

476

*440

402

395

410

435

430

392

373

321

312

504

306

435

50.9 

445

500

686

700

664

668

14,453

498

28,670

Mar.

668 

700

818

1,010 

1,240

1,120

965

893

974

1,290

1,630

1,440

1,330

1,320

*1,390

1,430

1,560

1,810

1,990

2.070

2,060

2,010

1,980 

1,960

1,980

2,020

1,920

1,710

1,590

1,580 

1,540

45,998

1,484

91,240

Apr.

1,420 

1,300

1,160

1.050 

*1,050

1,060

1,120

1,200

1,240

1,320

1,220

1,270

1,400

1,660

1.800

1,780

1,620

1,430

1,410

1,410

1,440

1,460

1,570 

1,560

1,520

1,620

1,580

1,540

1,390

1,250

41,850

1,395

83,010

May

1,120 

1,040

1,010

1.440 

1,300

1,380

1,420

1,360

1,290

*1,220

1,170

1,060

952

844

754

696

668

654

658

675

714

750

778 

750

682

661

661

636

608

"eTe 593

28,170

909

55,870

June

551 

530

503

430 

420

382

358

329

277

281

271

252

234

*229

227

195

169

166

164

160

151

146

142 

139

135

130

135

136

124

116

7,482

249

14,840

July

110 

105

100

95 

92

88

83

79

90

95

85

80

74

67

63

60

53

48

45

i3.

*44

47

57 

69

46

47

50

48

45

44 

43

2,095

67.6

4,160

Aug.

43 

43

46

49 

47

48

50

48

44

45

44

43

41

*39

37

35

33

32

31

34

31

30

28 

28

28

28

28

262-6

26 

26

1,137

36.7

2,260

Sept.

26 

25

23

25 

25

25

25

26

26

26

27

26

27

26

26

25

24

26

39

33

32

31

30

29

27

27

*28

28

27

28

818

27.3

1,620

Calendar year 1955: Max 11,500 Mln 7.8 Mean 274 Ac-ft 198,300

Water year 1955-56: Max 11,500 Mln 13 Mean 703 Ac-ft 510,500

Peak discharge (base. 850 cfs). Dec. 19 (4 p.m.) 2,100 cfs (8.97 ft); Dec. 23 (1 p.m.) 14,400 cfs 

(15.77 ft); Jan. 7 (7 p.m.) 1,700 cfs (8.14 ft); Jan. 15 (4 p.m.) 4,640 cfs (11.04 ft); Mar. 5 

(9 p.m.) 1,400 cfs (7.66 ft); Mar. 11 (8 p.m.) 1,860 cfs (8.37 ft); Mar. 20 (7 p.m.) 2,130 cfs (8.71 

ft); Apr. 16 (3 a.m.) 1,900 cfs (8.42 ft); May 4 (1 p.m.) 1,610 cfs (8.01 ft).

* Discharge measurement made on this day.
416 SACRAMENTO RIVER BASIN

Middle Fork Feather River below Sloat, Calif.

Location. Lat 39°52'00", long 120°46'15", In SW£ sec. 8, T. 23 N., R. 11 E., on right bank 

0.6 mile downstream from Bell Bar Creek, 1.1 miles west of Bell Bar, and 2.2 miles west 

of Sloat.

Drainage area. 836 sq ml.

Records available. December 1940 to September 1956.

;e.--Water-stage recorder. Altitude of gage Is 4,010 ft (from topographic map). Prior 

~b Sept. 9, 1953, at site 0.6 mile upstream at different datum.

Average discharge. 15 years (1941-56), 585 cfs (423,500 acre-ft per year).

Extremes. Maximum discharge during year, 31,200 cfs Dec. 23 (gage height, 19.25'ft); from 

rating curve extended above 8,200 cfs on basis of slope-area determination of peak flow; 

minimum, 38 cfs Oct. 1,2.

1940-56: Maximum discharge, that of Dec. 23, 1955; minimum, 28 cfs Sept. 8, 14, 1955.

Remarks.--Records good. Flow slightly regulated by mlllpond at Sloat. Diversions for

irrigation of about 1,000 acres between stations near Clio and below Sloat. See Remarks 

for station near Clio.

Revisions (water years).--WSP 1395: 1954.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

2.4 

2.6 

2.9 

3.2 

3.5 

4.0 

5.0

35

68

135

235

370

650

1,440

6.0

7.0

8.0

10.0

13.0

17.0

2,370

3,470

4,970

8,750

15,200

25,200

2.7 

3.0 

3.3 

3.6 

4.0

64

140

260

420

650

Mote. Same as 

preceding table

above 4.0 ft. 

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

38 

38

40

40 

40

40

43

41

40

48

48

46

45

45

45

45

45

*45

46

46

46 

46 

48

56

60

54

53

53

51

1,448

46.7

2,870

Nov.

51 

51

51

53 

53

53

53

53

51

51

49

49

53

56

58

61

63

66

90

211

307

T25

103 

95 

90

92

95

92

*92

92

2,459

82.0

4,880

Dec.

115 

US

106

99 

99

326

218

156

190

172

190

159

144

132

125

130

156

219

3,410

*3,720

4,500

16,900

*24.600 

16,200 

10,800

11,100

*8,540

5,600

3,170

*2,790

2,220

116,404

3,755

230,900

Jan.

1,760 

1,440

1,310

1.250 

1,500

1,450

1,940

1,830

1,420

1,540

1,480

1,550

2,100

2,660

*5,150

5,670

4,710

3,760

2,710

2,330

2,160

2,030

2,220 

2,040 

1,900

1,790

1,490

1,420

1,400

1,420

1 , 280

66,690

2,151

132,300

Feb.

1,100 

970

858

801 

767

748

728

715

*644

626

590

578

596

632

626

560

554

497

480

464

542

1,090

1.510 

1,000 

874

986

1,030

946

938

22,450

774

44,530

Mar.

914

Wo

1,110

1,330 

1,530

1,400

1,220

1,190

1,240

1,560

1,910

1,810

*1,640

1,690

1,700

1,750

1,910

2,210

2,450

2,570

2,600

2,600

2,630 

2,670 

2,780

2,850

2,680

2,430

2,320

2,320

2,310

60,294

1,945

119,600

Apr.

2,120 

1,940

1,770

1.660 

*1,670

1,720

1,820

1,940

2,020

2,180

2,020

2,010

2,040

2,250

2,400

2,420

2,310

2,160

2,220

2,330

2,450

2,490

2,650 

2.720 

2,640

2,670

2,480

2,370

2,220

2,100

65,790

2,193

130,500

May

2,020 

1,970

1,990

5.150 

2,650

2,620

2,570

*2,390

2,270

2,130

2,050

1,860

1,700

1,560

1.490

1,530

1,580

1,640

1,700

1,860

2,010

2,160

2,240 

2,120 

1,930

1,860

1,850

1,690

1,620

1,620

1,660

61,490

1,984

122,000

June

1.490 

1,400

1,440

1,300 

1,120

1,020

994

978

930

946

922

850

794

*774

734

682

620

632

650

602

560

554

560 

542 

508

497

514

519

492

458

24,082

803

47,770

July

"392 420 

360

338 

321

305

290

285

285

300

275

251

238

224

211

203

*195

183

172

168

164

179

183 

211 

179

164

161

154

147

144

137

7,239

234

14,360

Aug.

134 

131

128

131 

131

128

131

128

119

119

119

116

110

*105

102

100

95

92

90

90

92

90

83ai

81

81

81

81

79

79

79

3,206

103

6,360

Sept.

77 

72

70

f§

70

70

70

70

70

72

74

74

74

74

70

6S

72

105

108

92

90

85 

88 

85

81

*81

81

81

81

2,343

78.1

4,650

Calendar year 1955: Max 24,600 Mln 29 Mean 552 Ac-ft 399,600

Water year 1955-56: Max 24,600 Mln 38 Mean 1,186 Ac-ft 860,700

Peak discharge (base. 1,600 cfs).--Dee. 19 (8 p.m.) 6,060 cfs (8.63 ft); Dec. 23 (3:30 p.m.) 

1,200 cfs (19-25 ft); Dec. 26 (3 p.m.) 13,500 Cfs (12.21 ft); Jan. 7 (9 p.m.) 2,250 cfs (5.88 

an. 15 (9 p.m.) 7,770 cfs (9.51 ft); Feb. 23 (12:30 a.m.) 2,090 cfs (5.72 ft); Mar. 26 (7 a.m. 

,930 cfs (6.55 ft); May 4 (4 p.m.) 3,280 cfs (6.84 ft); May 22 (11:30 a.m.) 2,410 cfs (6.04 ft

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 417

Middle Fork Feather River near Merrimac, Calif.

Location. Lat 39°42'30", long 121°16'1S", in NE£ sec. 2, T. 21 N., R. 6 E., on right 

bank 400 ft downstream from bridge on Milsap Bar Road, 500 ft downstream from Little 

North Fork, 4.5 miles southeast of Merrimac, and 20 miles northeast of Oroville.

Drainage area. 1,078 sq mi.

Records available. October 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,560 ft (from topographic map).

Average discharge.--5 years, 1,699 cfs (1,230,000 acre-ft per year).

Extremes. Maximum discharge during year, 62,000 cfs Dec. 23 (gage height, 21.2 ft), from 

rating curve extended above 13,000 cfs on basis of. comparison of upstream and downstream peak discharges and study of runoff per square mile for intervening areas; minimum, 122 cfs Oct. 2-10.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, 108 cfs Sept. 6, 7, 8, 

1955.

Flood of Nov. 21, 1950, reached a stage of 17.1 ft, from floodmarks (discharge, 

34,400 cfs on basis of slope-area determination of peak flow). Flood of Dec. 10, 1937, 

reached a stage about 2.3 ft higher than that of Nov. 21, 1950.

Remarks. Records good except those for period of no gage-height record, which are fair. 

No diversions between stations below Sloat and near Merrimac.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

2.7 

3.2 

4.0 

5.0 

6.0

106

138

216

353

665

1,290

2,200

7.0

8.0

10.0

12.0

15.0

20.0

3,350

4,9OO

9,020

14,600

25,800

53,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

127

125

124

124 

122

122

122

124

122

145

188

T69

147

140

135

135

133

133

133

135

135

135

135

135

135

143

161

160

149

147

145

4,285

138

8,500

Nov.

143

143

143

143 

147

151

149

145

143

143

140

140

156

174

169

174

188

194

296

511

1,070

441

308

271

245

235 

243

248

245

240

7,138

238

14,160

Dec.

359

*341

310

266 

320

900

640

440

520

490

530

440

400

370

350

360

440

900

8,000

9,000

11,000

22,000

49,OQO

35,000

26,000

26,000 

21,OOO

13,000

7,800

6,200

5,200

247,576

7,986

491,100

Jan.

4,200

3,500

*3,100

2,860 

3,350

3,030

3,890

4,140

3,220

3,440

3,310

3,180

4,740

7,580

12.700

12,400

9,050

7,380

5,760

5,330

5,100

5,110

6,300

5,120

4,810

5,190 

4,520

3,860

3,550

3,350

3,080

156,150

5,037

309,700

Feb.

2,770

2,510

2,320

2,170 

2,050

1,930

1,830

1,800

1,670

1,610

1,540

1,500

1,470

1,480

1,460

1,350

1,350

1,290

1.260

1,660

2,210

5,480

5.960

3,510

2,890

2,610 

2,510

*2,320

2,270

64, 800

2,234

128,500

Mar.

2.130

2,160

2,300

2,590 

2,780

2,610

2,320

2,270

2,240

2,490

2,860

2,840

2,580

2,680

2,610

2,660

2,860

3,280

3,580

3,800

3,880

3,910

4,060

4,220

4,460

4,650 

4,270

3,910

3,730

3,730

*3,800

98,260

3,170

194,900

Apr.

3,490

3,180

2,930

2.770 

2,770

2,890

3,070

3,270

3,490

3,860

3,630

3,430

3,320

3,380

3,540

3,560

3,590

3,430

3,620

4,OOO

4,410

4,580

4,860

4,740

4,830

5.140 

4,570

4,200

3,960

3,850

112,360

3,745

222, 900

May

3,860

3,880

4,200

7.760 

6,450

5,940

5,540

5,080

4,650

4,460

*4,350

3,880

3,550

3,380

3.550

3,610

3,850

3,960

4,080

4,430

4,760

5,040

5,140

4,740

4,270

4,060 

3,980

3,590

3,450

3,420

3,400

136,110

4,391

270,000

June

3.090

2,910

2,970

2,800 

2,420

2,250

2,160

2,140

2,100

2,070

*1,930

1,860

1,750

1,680

1,600

1,500

1,370

1,350

1,390

1,310

1,200

1,140

1,130

1,090

1,O4O

1,020 

1,020

1,010

965

694

------

51,159

1,705

101,500

July

828

780

740

701 

670

642

620

598

580

580

567

539

523

507

479

463

448

427

410

*402

392

392

406

402

399

372 

359

347

338

328

522

15,561

502

30,860

Aug.

316

308

308

302 

302

299

293

290

285

277

271

266

261

258

253

245

*240

233

230

230

228

226

221

212

212

209 

209

207

207

205

205

7,806

252

15,480

Sept.

201

198

196

194 

190

190

190

190

190

192

192

192

194

194

194

190

190

190

271

277

238

218

212

207

205

205 

201

*201

201

201

------

6,104

205

12,110

Calendar year 1955: Max 49,000 Min 108 Mean 1,26O Ac-ft 912,500

Water year 1955-56: Max 49,OOO Min 122 Mean 2,479 Ao-ft 1,800,000

Peak discharge (base. 4.5OO efs). Dee. 25 (time unknown) 62,OOO cfs (21.2 ft); Jan. 7 (12 p.m.) 

4..810 cfs (7.95 ft); Jan. 15 (8 p.m.) 17,500 cfs (12.80 ft); Jan. 25 (5 a.m.) 7,090 cfs (9.12 ft); 

Feb. 22 (9 p.m.) 8,52O cfs (9.78 ft); Mar. 26 (6 a.m.) 4.76O cfs (7.92 ft); Apr. 26 (8 a.m.) 5,230 

cfs (8.18 ft); May 4 (7 a.m.) 8,380 cfs (9.72 ft); May 23 (1 a.m.) 5,540 cfs (8.54 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 6 to Jan. 3; discharge estimated on basis of records for stations below Sloat and at Bidwell Bar.
418 SACRAMENTO RIVER BASIN

Lost Creek near Clipper Mills, Calif.

Location. Lat 39°34'25", long 121°08'25", in SW£ see. 24, T. 20 N., R. 7 E., on left bank

 6.3 mile downstream from Lost Creek Reservoir, 0.3 mile downstream from Pinkard Creek, 

and 2.8 miles north of town of Clipper Mills.

Drainage area. 30.1 sq mi.

Records available. October 1927 to September 1941, October 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,170 ft (from topographic map).

Average discharge. 22 years (1927-41, 1948-56), 74.2 efs (53,720 acre-ft per year), unadjusted for storage and diversions.

Extremes. Maximum discharge during year, 5,000 efs Dee. 22 (gage height, 6.90 ft), from 

rating curve extended above 520 efs on basis of studies of downstream peak discharges 

and runoff per square mile for intervening areas; minimum, 0.3 efs Dec. 15.

1927-41, 1948-56: Maximum discharge, that of Dee. 22, 1955; no flow at times in 

1940-41, 1949-50, 1954.

Remarks.--Records good except those for periods of no gage-height record, and those above

 1,500 efs, which are fair. Storage in Lost Creek Reservoir (eapaeity, 5,640 acre-ft 

with flashboards) above station was 1,218 acre-ft on Sept. 30, 1955, and 3,168 acre-ft 

on Sept. 30, 1956. Oroville-Wyandotte Canal diverts water at Lost Creek Dam.

Revisions (water years).--WSP 1395: 1954.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29 

30

31

Ototal

Mean

Ac-ft

(ft)

Oct.

4.0

ITS

4.0

3.8

2.7

2.2

2.2

2.2

2.2

2.3

2.4

2.4

2.4

2.3

2.3

2.4

*2.5

2.5

2.5

2.7 

2.7

2.5

2.5

2.7

2.7

2.4

2.2

2.2

2.0

8O.1

2.58

159

-1,121

2,050

Nov.

1.8

1.8

1.6

1.6

1.5

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.0

1.0

1.0

.9

.9

.8

1.1

.8

.8 

.7

.7

.7

.7

.6

76

.6

.6

32.2

1.07

64

+403

1,20O

Dec.

0.6

.6

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

*.4

.4

.6

1.3

675

1,230

1,290

3.84O 

3,760

1,640

734

1,250

904

540

*410

332

300

16,854.3

544

33,430

+4,731

512

Jan.

280

242

218

*224

260

221

325

280

260

316

276

276

575

1,120

1.95O

1,010

634

505

445

495

480

630 

594

470

490

666

470

4OO

340

304

276

15,032

485

29,820

-68

175

Feb.

254

242

227

218

203

195

190

180

170

165

160

160

155

150

148

140

*140

134

142

175

264

911 

850

750

400

340

280

250

230

7,823

270

15,520

+ 14

6.3

Mar.

210

25o

20O

200

200

180

170

160

16O

155

150

145

140

140

135

140

145

150

160

160

165

170 

180

190

200

210

200

190

185

19O

190

5,370

173

1O, 65O

-27

12

Apr.

180

160

140

140

150

155

160

170

180

19O

190

170

150

140

135

130

130

140

160

*180

206

212 

218

212

230

268

221

192

178

172

5,259

175

10,430

0

672

May

175

170

223

390 300"

280

260

230

209

212

221

192

175

162

92

23

66

164

159

148

156

138 

129

120

*107

99

92

85

81

78 

76

5,O12

162

9,940

+530

1,600

June

72

66

61

29

19

51

64

6O

58

56

53

51

39

38

4O

36

33

29

28

28

26

24 

24

21

20

19

18

17

16

±2.

1,111

37.0

2,200

+1OO

1,85O

July

TS" 13

12

12

12

12

12

12

11

11

11

10

9.8

9.4

9.0

8.7

8.3

8.1

7.9

7.9

7.7

7.7 

7.6

7.4

7.4

*7.2

7.2

7.0

6.9

~R 6.7 7

6. 7

289.6

9.34

574

-243

2,200

Aug.

6.5

6.5

6.4

6.2

6.0

5.9

5.9

5.8

5.4

5.2

4.5

3.9

3.4

2.6

2.0

3.1

4.1

4.1

4.2

4.2

7.0

8.7 

9.0

9.0

9.0

9.0

9.0

9.0

9.2

9 . 2

9.4

193.4

6.24

384

-640

2,350

Sept.

9.4

9.4

9.6

9.6

9.8

9.8

10

10

10

10

11

11

11

*11

11

11

11

11

11

12

11

11 

11

11

12

12

12

12

12

12

324.6

10.8

644

-1,729

2,24O

Adjusted for change In contents and diversions

Mean 

Ac-ft

17.7 

1,090

28.1 

1,670

629 

38,670^

487 

29,930^

270 

15, 540

173 

10,640

187 

11,100

196 

12,070

69.7 

4,150

41.1 

2,530

34.0 

2,09O

19.5 

1,160

Calendar year 1955: Max 3,840 

Water year 1955-56: Max 3,840.

Mln 

Mln

0.3 

0.3

Mean 

Mean

82.9

157

Ac-ft 60,04O 

Ac-ft 113,800

Adjusted

Calendar year 1955: Mean 104 

Water year 1955-56: Mean 180

Ac-ft 

Ac-ft

75,490

130,600

* Discharge measurement made on this day.

t Change In contents, In acre-ft, In Lost Creek Reservoir, furnished by Oroville-Wyandotte Irrigation District.

tt Diversions, In acre-ft, to Oroville-Wyandotte Canal.

Note. No gage-height record Nov. 25 to Dec. 13, Feb. 23 to Apr. 20; discharge Interpolated, or 

estimated on basis of 1 discharge measurement and records for South Fork Feather River at Enterprise.
SACRAMENTO RIVER BASIN 419

Palermo Canal at Enterprise, Calif.

Location. Lat 39°32'05", long 121°20'40", in NW£ sec. 6, T. 19 N., R. 6 E., on left bank 

400 ft downstream from intake at diversion dam on South Pork Feather River, 1 mile 

east of highway bridge at Enterprise, and 11 miles east of Oroville.

Records available.--October 1911 to September 1956. Prior to October 1926, published as 

Palermo Land and Water Co. canal at Enterprise.

Gage.--Water-stage recorder and Parshall flume. Altitude of gage is 650 ft (from topographic map). Prior to Nov. 17, 1932, staff gages at several sites about 1 mile downstream at various datums. Nov. 17, 1932, to Oct. 21, 1934, staff gage at present site 

and datum.

Average discharge. 45 years, 18.8 cfs (13,610 acre-ft per year).

Extremes. 1911-56: Maximum daily discharge, 41 cfs June 14, 17, 1918, July 10-30, 1922; 

no flow at times in most years.

Remarks.--Records good. Canal diverts from left bank of South Pork Feather River 1 mile 

above Enterprise. Water is used for irrigation near Oroville.

Discharge, In cubic 'feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

25

25

25

25

25

24

22

22

22

22

23

22

22

22

22

22

*22

21

22

22

22

22

21

21

21

21

21

21

21

21

21

690

22.3

1,370

Nov.

21

21

9.4

3.5

475

5.3

5.3

5.3

5.3

6.3

8.4

8.4

7.6

6.7

6.3

6.3

6.3

6.3

6.3

6.3

5.6

5.3

5.4

5.4

5.3

5.3

5.3

*5.3

5.3

5.3

209.3

6.98

415

Dec.

5.3

5.3

5.3

5.1

5.3

4.9

3.9

4.3

4.5

4.2

4.2

4.2

4.0

4.0

4.0

4.0

4.0

4.0

3.4

.7

4.5

~.a 12

0

0

0

0

*0

0

0

0

102.9

3.32

204

Jan.

PI

(»)

0

0

0

Feb.

(*)

0

0

0

Mar.

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

5.2

12

~9.0 16

6.2

6.2

6.4

6.4

67.4

2.17

134

Apr.

6.4

*6.4

I 6.2

19

19

19

19

19

24

22

19

19

19

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

501.0

16.7

994

May

17

17

20

21

15

15

*15

15

15

15

15

15

15

15

15

15

15

15

23

26

26

26

26

26

26

26

26

29

30

30

30

635

20.5

1,260

June

30

30

30

30

30

31

31

30

30

30

30

*30

31

31

31

30

30

31

31

31

31

31

31

31

31

31

31

31

31

31

918

30.6

1,820

July

31

31

31

31

31

31

31

31

31

31

31

31

31

31

52

*32

31

31

31

31

31

31

31

31

31

31

32

32

32

32

32

968

31.2

1,920

Aug.

32

32

32

32

32

32

32

32

32

31

31

32

31

31

31

31

31

31

31

31

31

32

32

31

32

31

31

31

32

32

32

977

31.5

1,940

Sept.

32

32

32

32

32

32

32

62

32

32

32

32

32

32

32

32

31

31

30

30

31

31

31

*3l

31

30

30

30

30

30

939

31.3

1,860

Calendar year 1955 : Max 29 Mln 0 Mean 15.4 Ac-ft 11,140

Water year 1955-56 : Max 32 Mln 0 Mean 16.4 Ac-ft 11,920

Discharge measurement or observation of no flow made on this day.
420 SACRAMENTO RIVER BASIN

South Fork Feather River at Enterprise, Calif.

Location. La t 39°32'15", long 121°20'45", in NW£ sec. 6, T. 19 N., R. 6 E., on left bank 

0.5 mile upstream from McCabe Creek, 1 mile upstream from highway bridge at Enterprise, 

and 11 miles of Oroville.

Drainage area. 134 sq mi.

Records available. October 1911 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 640 ft (from topographic map). Prior 

to Oct. 18, 1930, staff gage at site half a mile downstream at different datum.

Average discharge . 45 years, 314 cfs (227,300 acre-ft per year).

Extremes. Maximum discharge during year, 19,200 cfs Dec. 22 (gage height, 21.60 ft), from 

rating curve extended above 4 ,600 cfs on basis of computed flow over diversion dam 

a quarter of a mile upstream; minimum daily, 0.1 cfs Oct. 1-4, 7-9.

1911-56: Maximum discharge, that of Dec. 22, 1955; no flow Aug. 9, 10, Sept. 24-30, 

1950.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Storage and diversions above station for irrigation of about 4,500 acres in OrovilleWyandotte Irrigation District. (See preceding page for records for Palermo Canal and 

Remarks for Lost Creek near Clipper Mills).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic feet

per second)

Oct. 1 to Feb. 22 Feb. 23 to Sept. SO

1.0

1.1

1.2

1.3

1.4

1.5 

1.7 

1.9

.5 

1.3 

2.8 

4.4 

8.2 

12

3.0 

3.5 

4.0 

5.0 

6.0

18

26

44

84

148

228

446

720

7.0

8.0

10.0

13.0

16.0

20.0

1,050

1,530

3,000

5,900

9,620

16,200

4.5 

6.7

2.1 

2.3

2.9 

3.3

25

45

71

118

4.0 

5.0 

6.5 

8.0 

9.0 

11.0

222

450

1,010

1,750

2,380

3,950

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.1

TT

.1

.1

.2

.2

.1

.1

.1

6.3

30

10

5.9

4.1

3.3

2.5

*1.8

1.8

2.0

2.4

2.2

2.2

2.0

1.6

1.1

10 

9.9

6.5

3.6

3.5

2.4

115.2

3.72

228

Nov.

2.0

1.8

12

15

15

15

14

14

13

12

11

11

18

28

23

26

30

29

45

68

256

T59 

80

69

56

51 

50

*51

50

50

1,224.8

40.8

2,430

Dec.

121

111

75

62

92

557

284

162

193

155

120

107

98

91

86

108

280

578

4,580

5,540

5,370

*15J 400 

14,800

4,890

2,670

4,720 

3,360

2,060

1,460

1,140

986

70,256

2,266

139,400

Jan.

975

849

756

801

*1,020

825

1,220

1,250

993

968

922

840

1,350

*3,250

5. 820

4,520

2,700

1,940

1,550

1,580

1,640

1,700 

2,190

1,670

1,700

2,380 

1,970

1,500

1,230

1,070

940

52,059

1,679

103,300

Feb.

846

783

735

696

654

618

587

563

532

519

506

493

477

467

454

*420

424

405

434

1,000

1,330

*5.550 

3J160

1,720

1,360

1,110 

978

893

855

26,549

915

52,660

Mar.

783

751

751

763

763

668

626

608

598

591

580

*552

543

540

525

522

54¥

574

605

622

644

658 

691

731

775

835 

791

755

747

759

783

20,683

667

41,020

Apr.

719

*658

605

577

588

605

640

664

723

811

811

747

658

608

570

558

567

567

616

727

843

911 

996

1,030

1,050

1.220 

1,000

855

795

775

22,494

750

44,620

May

803

827

914

2.170

1,710

1,580

*1,390

1,190

1,080

1,010

1,080

920

835

783

755

695

771

929

916

965

1,000

1,030 

1,010

898

807

751 

707

612

570

M

29,809

962

59,130

June

483

444

429

403

318

303

296

286

278

286

260

*238

222

212

209

193

176

168

166

159

149

136 

129

121

114

105 

101

95

89

84

6,652

222

13,190

July

76

70

66

64

66

58

55

51

49

47

44

42

42

42

39

*34

31

30

28

27

25

24 

23

22

22

21 

20

19

19

18

II

1,191

38.4

2,360

Aug.

17

16

15

15

14

14

13

12

12

11

10

10

*9.4

8.1

6,7

6.0

6.3

7.4

7.4

7.0

7.0

10 

11

13

16

H 

11

10

15

16

10

347.3

11.2

689

Sept.

9.8

9.4

8.4

8.4

8.4

8.1

874

8.7

8.4

8.7

8.4

9.8

10

10

10

9.4

9.1

12

39

31

19

15

14

*13

12

12 

13

13

12

11

369.4

12.3

733

Calendar year 1955 : Max 15,400 Min 0.1 Mean 338 Ac-ft 244,900

Water year 1955-56 : Max 15,400 Min 0.1 Mean 633 Ac-ft 459,800

Peak discharge (base. 1.400 cfs).--Dec. 19 (8 p.m.) 8,540 cfs (15.22 ft); Dec. 22 (7 a.m.) 19,2OO 

cfs (21.60 ft); Dec. 26 (4 p.m.) 7,010 cfs (l4.00 ft); Jan. 7 (8 p.m.) 2,14O cfs (8.91 ft); Jan. 15 

(6 p.m.) 8,030 cfs (14.83 ft); Jan. 23 (4 a.m.) 2,420 cfs (9.28 ft); Jan. 26 (12 m.) 2,970 cfs 

(9.96 ft); Feb. 22 (9 p.m.) 5,900 cfs (13.00 ft); May 4 (2 a.m.) 2,340 cfs (8.95 ft).

* Discharge measurement made on this day.

Note. No gage-height record July 17 to Aug. 12; discharge estimated on basis of a normal recession, records for Lost Creek near Clipper Mills and Palermo Canal at Enterprise.
SACRAMENTO RIVER BASIN 421

Feather River at Bidwell Bar, Calif.

Location. Lat 39°33'15", long 121°26'15", in NE^Nl/f^ sec. 32, T. 20 N., R. 5 E., on left 

bank just upstream from suspension bridge at Bidwell Bar, 2 miles upstream from North 

Fork and 7 miles northeast of Oroville.

Drainage area. 1.353 sq mi.

Records available.--October 1911 to September 1956. Published as Middle Fork Feather

River near Oroville prior to September 1925 and as Middle Fork Feather River at Bidwell 

Bar October 1925 to September 1950.

Gage. Water-stage recorder. Altitude of gage is 290 ft (from topographic map). Prior 

to Sept. 17, 1930, staff gage at same site and datum.

Average discharge.--45 years, 1,870 cfs (1,354,000 acre-ft per year).

Extremes. Maximum discharge during year, 104,000 cfs Dec. 23 (gage height, 25.5 ft), 

from rating curve extended above 26,000 cfs on basis of studies of upstream and downstream peak discharges; minimum, 153 cfs Oct. 3,8.

1911-56: Maximum discharge, that of Dec. 23, 1955; minimum, 88 cfs Jan. 8, 1937.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow slightly regulated by small reservoirs above station. Several diversions above 

station for irrigation. See Remarks for stations upstream.

Revisions (water years).--WSP 861: 1928(M).

Rating tables, water year 1955-56 (gage height, In feet and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 25 Dec. 24 to Sept. 30

2.0 

2.2 

2.5

149

195

271

419

605

840

1,130

1,510

6.0

7.5

9.0

11.0

14.0

17.0

20.0

24.0

2,460

4,380

6,650

10,900

22,100

38,600

59,000

91,000

2.5 

3.0 

5.5 

4.0 

5.0

245

390

570

800

1,420

6.5

8.0

10.0

12.0

14.0

2,800

4,530

7,800

13,800

22,100

Note. Same as preceding 

table above 14.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac-ft

Oct.

160

160

158

158 

158

158

156

156

158

183

305

255

209

188

183

178

173

173

173

176

176

178

181 

178

176

209

245

224

202

195 

193

5,773

186

11,450

Nov.

188

188

193

207 

212

222

214

207

205

202

197

195

222

305

271

268

324

305

426

566

1.640

809

519 

464

403

369

372

378

375

369

10,815

360

21,450

Dec.

614

*654

516

453 

477

3,040

1,780

968

1,150

980

785

750

694

645

609

697

1,560

2,730

18,800

22,200

19,500

65,000

81.000 

36,000

21,000

31,000

25,000

15,000

9,900

*8,000

6,640

378,142

12,200

750,000

Jan.

5,860

5,000

4.450

4,620 

5,620

*4,800

6,530

6,960

5,220

5,430

5,240

4,910

7,450

14,800

24 . 500

*21,900

15,100

12,000

8,930

8,440

8,310

8,450

10,500 

8,370

8,440

9,790

8,440

6,820

6,070

5,570

5,070

263,370

8,496

522,400

Feb.

4,530

4,150

3,860

3,630 

3,450

3,290

3,120

3,010

2,840

2,750

2,660

2,600

2,550

2,520

2,470

2,300

2,300

2.220

2,250

4,160

4,970

*11,500

12.100 

6,640

5,360

4,650

4,320

4,020

3,900

_ . - _

118,120

4,073

234,300

Mar.

3,640

3,600

3,680

3,970 

4,170

3,910

3,580

3,480

5.450

3, 600

5,940

5,940

5,660

5,720

*5, 620

3,680

5,880

4,270

4,650

4,900

5,010

5,080

5,220 

5,430

4,980

6.050

5,620

5,220

5,000

4,980

*5,110

155,000

4,355

267,800

Apr.

4,790

4,570

4,070

3.850 

5,880

3,960

4,170

4,400

4,660

5,150

5,010

4,700

4,490

4,460

4,580

4,600

4,560

4,450

4,660

5,150

5,720

5,960

6,420 

6,590

6,570

6.950

6,180

5,620

5,250

5,120

150,540

5,011

298,200

May

5,150

5,210

5,430

11.200 

9,510

8,400

7,660

6,820

6,340

6,050

*6,080

5,380

4,910

4,650

4,580

4,770

5,080

5,350

5,400

5,780

6,130

6,590

6,550 

6,100

5,540

5,220

5,120

4,620

4,440

4,540

4,570

182,350

5,882

361,700

June

5,980

3,710

3,730

3,650 

3,160

2,930

2,820

2,770

2,720

2,690

2,650

*2,450

2,320

2,220

2,160

2,020

1,860

1,800

1,850

1,770

1,660

1,580

1,520 

1,500

1,450

1,400

1,400

1,400

1,350

1,300

67,780

2,259

134,400

July

1.200

1,100

1,050

1,000 

960

920

890

860

840

820

820

780

740

720

680

660

640

620

600

*577

560

560

570 

570

560

530

520

490

480

470

460

22,247

718

44,130

Aug.

450

440

430

430 

420

415

410

405

400

387

378

578

366

357

351

345

*356

333

324

324

321

318

515 

506

506

500

300

297

294

300

288

11,024

356

21,870

Sept.

285

276

270

262 

258

258

258

258

258

258

258

258

262

262

262

258

255

255

381

458

554

512

297 

288

285

279

275

*270

270

268

8,426

281

16,710

Calendar year 1955: Max 81,000 Mln 136 Mean 1,908 Ac-ft 1,381,000

Water year 1955-56: Max 81,000 Mln 156 Mean 3,698 Ac-ft 2,684,000

Peak discharge (base. 5.600 efs).-- Dec. 19 (9:30 p.m.) 53,700 cfs (16.18 ft); Dec. 23 (time unknown) 104,000 cfs (25.5 ft); Jan. 7 (8 p.m.) 9,480 cfs (10.73 ft); Jan. 15 (8 p.m.) 31,800 cfs 

15.85 ft); Jan. 23 (6 a.m.) 11,800 cfs (11.48 ft); Jan. 26 (3 p.m.) 11,200 cfs (11.31 ft); Feb. 20 

9 p.m.) 6,420 cfs (9.25 ft); Feb. 22 (11 p.m.) 19,200 cfs (13.35 ft); Mar. 26 (8 a.m.) 6,210 cfs 

9.12 ft); Apr. 26 (4 a.m.) 7,150 cfs (9.66 ft); May 4 (10 a.m.) 12,400 cfs (11.65 ft); May 23 

4 a.m.) 7,020 cfs (9.59 ft). 

* Discharge measurement made on this day.

Note. No gage-height record Dec. 22-29, June 22 to Aug. 9; discharge estimated on basis of 1 discharge measurement and records for nearby stations.

493801 O - 59 - Z8
422 SACRAMENTO RIVER BASIN

Lake Almanor near Prattville, Calif.

Location. Lat 40°10'30", long 121°05'25", in NWir sec. 28, T. 27 N., R. 8 E., at outlet 

tower of dam on North Pork Feather River, 5 miles southeast of Prattville.

Drainage area. 506 sq mi.

Records available.--October 1913 to September 1956 (yearly summaries only, urior to October 

1930 Dublished in WSP 881).

Gage. Staff gage read once daily. Datum of gage is at mean sea level.

Extremes.--Maximum contents observed during year, 650,300 acre-ft June 20 (elevation, 

4,474.02 ft); minimum observed, 260,600 acre-ft Dec. 16 (elevation, 4,452.82 ft).

1913-56: Maximum contents, 798,900 acre-ft June 9, 1928 (elevation, 4,480.5 ft); 

minimum, 5,230 acre-ft Feb. 5, 1918 (elevation, 4,416.1 ft).

Remarks. Lake is formed by earth-fill dam; storage began in July 1913; dam raised to elevation 4,455 ft above mean sea level in 1917 and to 4,515 ft above mean sea level in 

1927. Usable capacity, 649,800 acre-ft between elevations 4,400 ft (bottom of outlet to 

river) and 4,474 ft (present upper storage limit). Water is diverted by tunnel to Butt 

Valley Reservoir for use in Caribou powerplant and some is released down North Pork 

Feather River (see following page). Records, including extremes, show contents at 

12 p.m. interpolated from readings made at 5 p.m. All contents are available for diversion to Butt Valley Reservoir except 15,700 acre-ft (below elevation 4,429 ft) that can 

only be released down river.

Cooperation.--Records of contents, furnished by Pacific Gas & Electric Co. in connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, and 

contents, In thousands of acre-feet)

4,450

4,452

4,454

4,456

4,458

4,460

4,462

220.1

248.5

278.4

309.6

342.1

376.0

411.2

4,464

4,466

4,468

4,470

4,472

4,474

4,476

447.6

485.3

524.3

564.8

606.6

649.8

694.3

Contents, in thousands of acre-ft, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

(t)

(*)

Dot.

308.2

307.2

306.4

305.3

304.8

304.0

302.9

302.1

301.4

300.6

299.8

299.1

297.9

297.1

296.2

295.2

294.1 

293.2

292.6

291.6

290.7

289.6

288.7

287.7

287.0

285.9

285.3

284.3

283.3

282.5 

281.3

4,454.19

-27.8

Nov.

280.2

27571

278.2

277.6

276.8

276.1

275.2

274.5

274.2

273.8

273.0

272.0

271.4

271.2

270.5

269.8

269.1 

268.6

268.6

270.2

271.2

270.3

269.4

269.1

269.1

268.6

268.0

267.6

266.7

266.1

4,453.19

-15.2

Dec.

266.1

265.5

264.7

264.0

264.0

264.9

264.3

264.1

264.1

263.8

263.2

262.5

261.9

261.5

260.9

260.6

260.7 

263.2

268.8

273.9

281.3

290.4

302.6

326.3

335.7

346.4

353.6

359.4

364.1

368.2 

371.7

4,459.75

+105 . 6

Jan.

373.6

37673

379.3

381.9

384.8

386.8

389.4

392.9

396.4

399.1

400.0

399.8

401.9

404.8

409.0

412.5

415.9 

418.9

421.5

423.8

426.0

428.5

430.9

433.6

437.3

440.2

441.7

443.2

444.3

445.4 

446.0

4,463.91

+ 74.3

Feb.

445.8

445.8

446.0

446.1

446.3

446.7

446.9

446.3

445.4

444.1

441.9

439.9

438.0

436.0

434.2

432.0

ttti

431.8

436.4

442.6

447.2

450.6

451.3

452.1

452.4

452.4

452.6

452.8

4,464.28

+6.8

Mar.

451.9

450.2

448.5

446.9

445.2

443.7

441.9

440.2

438.4

436.6

434.4

431.1

428.2

425.1

422.2

419.1

415.9 

413.0

410.3

407.6

404.8

401.9

399.6

397.8

396.2

395.5

396.1

397.5

399.1

400.7 

402.3

4,461.50

-50.5

Apr.

403.7

406.7

408.2

409.9

411.7

413.7

415.7

417.8

420.6

423.3

425.8

427.6

430.4

433.8

436.8

439.3

441.7 

444.5

447.6

451.1

454.3

459.1

464.0

471.6

479.2

486.4

492.8

498.2

503.8

509.5

4,467.25

+107.2

May

512.1

51576

520.2

526.9

533.1

539.2

544.4

550.5

553.7

557.4

560.3

562.3

562.8

565.6

570.6

572.6

574.9 

577.8

581.4

585.3

589.9

594.1

597.7

601.9

607.7

611.7

616.0

620.3

625.7

630.9 

fiiUfi

4,473.30

+125.1

June

636.3

636.5

636.5

636.5

635.9

635.6

636.3

638.0

640.2

642.2

644.4

646.3

647.9

649.2

649.8

649.8

649.8 

649.8

649.8

650.5

650.1

649.6

648.7

648.1

647.6

648.5

649.2

649.8

649.8

650.1

4,474.01

+15.5

July

650.1

650.1

649.8

649,8

649 . 2

649.4

649.6

649.6

649.6

649.6

649.6

649.6

649.2

649.2

649.2

649.2

649.2 

649.0

648.7

648.5

648.3

648.1

648.1

647.6

646.1

644.8

643.7

642.6

641.5

640.4

£38*3,

4,473.50

-11.2

Aug.

636.9

634.8

632.6

630.9

629.6

628.5

627.4

626.1

625.0

623.3

621.6

620.3

618.6

616.4

614.7

613.2

611.5 

610.0

608.3

606.6

604.9

603.2

601.1

599.2

597.5

595.8

593.9

592.0

589.9

588.2 

586.4

4,471.04

-52.5

Sept.

586.4

583.6

579.9

577.8

575.5

573.3

571.2

568.9

566.7

563.8

561.3

559.1

557.0

555.0

553.1

551.3

549.5 

549.1

548.9

547.0

545.2

543.6

542.0

540.4

538.6

536.7

534.7

533.1

531.5

529.7

4, 468-. 2 7

-56.7

Calendar year 1955.................... * +159.3

Water year 1955-56.................... * +220.6

t Elevation, In feet, at end of month.

* Change In contents In thousands of acre-feet.
SACRAMENTO RIVER BASIN 

North Fork Feather River near Prattville, Calif.

423

Location. Lat 40°10', long 121°06', in SW£ sec. 28, T. 27 N., R. 8 E., on left bank

0.5 mile downstream from Almanor Dam, 5 miles southeast of Prattville, and 9 miles upstream from Butt Creek. 

Drainage area. 507 sq mi.

Records available.--June 1905 to September 1956 (daily discharges for July 1921 to September 1936 include water diverted through Almanor-Butt Creek tunnel).

Gage. Water-stage recorder with compound rectangular concrete weir. Altitude of gage is 

4,380 ft (from topographic map). Prior to Oct. 1, 1936, staff gages or water-stage 

recorders at several sites within half a mile of present site at various datums. 

Average discharge.--SO years (1905-10, 1911-56), 895 cfs (648,000 acre-ft per year), ineluding diversion through Almanor-Butt Creek tunnel.

Extremes. Maximum discharge during year, 1,660 cfs June 1-4 (gage height, 5.61 ft); minimum daily 5.2 cfs Nov. 14, 16. Extremes do not include diversions through AlmanorButt Creek tunnel.

1905-56: Maximum discharge, 10,000 cfs Mar. 19, 1907, before construction of dam 

(gage height, 16.2 ft, at former site), from rating curve extended above 3,700 cfs; no 

flow Apr. 15, 16, 1914, at times during January to April 1919, and Apr. 21, 1923. 

Remarks.--Records excellent except those below 100 cfs, which are good. Flow regulated by 

 EaTce Almanor beginning in 1913 (see preceding page). Water is diverted for power from 

Lake Almanor through Almanor-Butt Creek tunnel to Butt Creek. Figures of daily discharge show flow of river only; monthly figures also show combined flow of river and

Cooperation. Water-stage-recorder graph and six dTscharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years). WSP 1245: 1951 (yearly summaries). WSP 1285: 1952 (yearly 

summaries).

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

2.0 

2.5

55

53

125

5.0 

6.0

236

396

615

1,230

1,960

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

(t)

Oct.

35

35

35

35

54

34

34

35

35

35

3536'

36 

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

1,102

35.5

2,190

54 , 300

Nov.

24

12

5.7

6.2

6.2

7.2

7.2

*7.2

6.7

6.7

6.7

6.2

5.7 

5.2

5.7

5.2

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

6.2

6.2

6.2

6 . 2

205.6

6.85

408

52 , 710

Dec.

*6.2 672"

6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

6. 

6.

6.

6.

6.

6.

9.4

8.8

10

12

13

9.4

8.3

10

8.8

8.3

7.8

7.8

7.8

239.5

7.73

475

36,330

Jan.

7.8

L£

7.2

.8

.8

.8

.8

.8

.8

7.8

7.8

7.8

8.3 

8.3

10

9.4

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3 8-1

. «J

252.4

8.14

501

36,010

Feb.

7.8

7.8

7.8

7.8

7.8

7.8

7.8

128

400

731

1.050

1,030

1,030 

1,020

1,020

697

172

16

16

16

16

16

17

16

16

16

16

16

33

7,522.6

259

14,920

50,770

Mar.

362

883

1,040

1,030

1,040

1,040

1,040

1,030

1,030

1,030

1,020

1,260

*1,590 

1,590

1,590

1,590

1,590

1,580

1,580

1,580

1,580

1,570

1,570

1,570

1,570

1,250

454

12

12 

12

12

34,107

1,100

67,650

56,570

Apr.

12

12

12

11

10

10

10

10

10

10

10

10

10 

10

10

10

*10

1111

10

10

alO

alO

alO

alO

alO

alO

alO

alO

a28_

327

10.9

649

43,160

May

a34

a34

a34

a34

34

34

34

34

34

130

343

438

438 

438

438

438

438

367

313

268

42

42

42

42

42

42

42

42

150 

251

689

5,781

186

11,470

54,460

June

1,340

1,660

1,650

1,650

1,530

1,170

619

123

44

40

40

40

40 

262

793

1,070

1,070

796

463

677

962

962

962

751

268

33

33

90

198

19,534

651

38,750

54,250

July

200

200

200

200

91

38

38

38

38

38

46

65

54 

38

27

11

TT

43

96

66

42

56

408

595

595

463

343

320

320 

430

565

5,675

183

11,260

56,560

Aug.

748

829 799"

459

364

364

446

488

*484

484

484

484

620 

692

692

630

600

600

595

595

595

645

676

676

676

676

676

676

670 

670

753

18,846

608

37,380

56 , 300

Sept.

799

799

799

799

799

799

871

913 913-

913

835

731

698 

698

692

704

787

787

655

575

575

575

575

570

605

625

625

625

625 

625

21,591

720

42,830

53,980

Combined flow of river and Almanor-Butt Creek tunnel

Mean 919 893 598 594 1,142 2,020 736 1,072 1,563 1,103 1,524| 1,627 

Ac-ft 56,490 55,120 56,800 56,510 65,690 124,200 45,810 65,950 95.000 67,820 93,680 ' 96,810

River only

Calendar year 1955: Max 168 

Water year 1955-56: Max 1,660

Min 

Min

5.2 

5.2

Mean 

Mean

26.2

515

Ac-ft 19,020 

Ac-ft 228,500

Combined flow

Calendar year 1955: Mean 549 

Water year 1955-56; Mean 1,149

Ac-ft 

Ac-ft

597,200

855,900

* Discharge measurement made on this day.

t Diversion, in acre-feet, through Almanor-Butt Creek tunnel, computed as difference in flow between the two stations on Butt Creek. There is some unmeasured inflow between the two stations.

a No gage-height record; discharge estimated on basis of recorded range in stage and records of 

Almanor Dam gate openings and weir readings.
424 SACRAMENTO RIVER BASIN

Butt Creek above Almanor-Butt Creek tunnel, near Prattville, Calif.

Location. Lat 40°ll l , long 121°11', In NW£ sec. 22, T. 27 N., R. 7 E., on left bank 

0.2 mile upstream from outlet of tunnel from Lake Almanor to Butt Creek and 2.2 miles 

southwest of Prattville.

Drainage area. 67.0 sq mi.

Records available.--October 1936 to September 1937, October 1938 to September 1956. Published as "above tunnel No. 1" 1936-40.

Gage. Water-stage recorder. Altitude of gage is 4,400 ft (from topographic map). Prior 

to Nov. 12, 1948, at site 1.5 miles upstream at different datum.

Average discharge.--19 years, 74.7 cfs (54,080 acre-ft per year).

Extremes. Maximum discharge during year, 2,200 cfs Dec. 22 (gage height, 5.16 ft), from 

rating curve extended above 290 cfs by logarithmic plotting; minimum, 16 cfs Dec. 4, 

result of freezeup.

1936-37, 1938-56: Maximum discharge, that of Dec. 22, 1955; minimum, 3.2 cfs Dec. 11, 

1936.

Remarks. Records good. No storage above station. Wallack ditch, above station, diverts 

several cubic feet per second during each irrigation season into Yellow Creek basin.

Cooperation. Water-stage recorder graph and 10 discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 18 to Dec. 17, Feb. 28 to Apr. 5)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

1.0 26

1.2 40

1.4 62_

1.7 110

2.0 178

2.5 

3.0 

4.0 

5.0

329

550

1,170

2,040

1.2 

1.4 

1.7 

2.0

60

102

160

2.5 292

3.0 500

4.0 1,140

5.0 2,040

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

32

31

31

31

31

31

31

31

30

52.

36

30

30

30

30

30

30

30

29

29

29

29 

29

29

29

36

30

29

28

28

27

958

30.9

1,900

Nov.

27

27

27

28

31

31

30

*29

29

30

29

28

27

31

29

31

33

33

45

151

94

40 

32

51

28

51

52

51

51

51

1,087

36.2

2,160

Dec.

*37

52

51

27

2?

55

51

40

42

56

57

58

55

54

55

40

48

70

562

589

518

1,450 

1,120

552

559

449

549

251

*189

162

145

7,168

251

14,220

Jan.

155

120

115

111

120

106

92

96

109

106

102

100

130

204

489

454

308

251

226

229

218

245 

292

221

201

194

174

156

159

128

118

5,687

185

11,280

Feb.

Ill

*107

115

111

106

99

94

91

86

86

85

86

85

82

78

64

80

76

75

85

86

157 

234

189

152

126

116

102

94

3,056

105

6,020

Mar.

89

89

89

89

82

75

75

75

76

78

76

75

*75

79

79

85

92

102

116

151

145

156 

177

196

218

224

IM

177

189

218

213

3,825

125

7,580

Apr.

198

172

165

Tn

196

206

226

240

259

268

240

226

215

206

208

221

*240

259

292

522

341

555 

375

565

561

575

522

295

286

286

7,889

265

15,650

May

286

289

558

555

446

425

561

515

*286

271

259

251

216

206

208

229

245

265

286

502

512

525 

555

505

285

271

254

254

229

251

216

8,990

290

17,850

June

196

T84

179

172

158

147

145

157

155

151

126

118

115

118

*122

109

100

80

102

102

92

88 

85

82

79

76

75

71

70

£5

5,455

115

6,850

July

65

64

62

62

62

61

60

58

57

54

*56

56

58

58

54

54

55

52

50

50

49

49 

50

53

50

49

49

48

47

47

4_6

1,683

54.5

5,540

Aug.

46

47

48

47

47

47

47

46

*46

45

45

45

44

45

45

45

45

45

46

46

44

44 

44

44

44

44

44

44

44

44

44

1,401

45.2

2,780

Sept.

44

45

45

44

44

44

44

45

43

44

44

44

44

44

45

45

44

48

76

54

50

48 

47

47

47

46

47

46

46

46

1,394

46.5

2,760

Calendar year 1955: Max 1,450' Min 20 Mean 64.5 Ac-ft 46,73O

Water year 1955-56: Max 1,45O Min 27 Mean 127 Ac-ft 92,37O

Peak discharge (base, 310 cfs). --Dec. 22 (7 a.m.) 2.2OO cfs (5.16 ft): Dec. 26 (6 p.m.) 622 ofs

(3.23 ft); Jan. 15 (7 p.m.) 75O cfs (3.45 ft),- Jan. 23 (2:3O a.m.) 349 cfs (2.66 ft); Apr. 22

(10 p.m.) 405 cfs (2.80 ft); May 4 (2 a.m.) 616 ofs (3.22 ft); May 22 (11 p.m.) 361 cfs (2.69 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 425

Butt Creek below Almanor-Butt Creek tunnel, near Prattville, Calif.

Ion. Lat 40°11', long 121 e ll', in NW£ sec. 22, T. 27 N. , R. 7 E., on right bank

t downstream from outlet of tunnel from Lake Almanor to Butt Creek and 2.2 miles 

southwest of Prattville.

Drainage area. 67.3 sq mi.

Records available.--October 1938 to September 1956. Published as "below Tunnel No. 1" 

1938-40.

Gage. Water-stage recorder and concrete control. Altitude of gage is 4,400 ft (from topographic map).

Average discharge.--18 years, 752 cfs (544,400 acre-ft per year).

Extremes. Maximum discharge during year, 2,070 cfs Dec. 22 (gage height, 4.24 ft); minimum 

daily, 104 cfs Jan. 7.

1938-56: Maximum discharge, 2,170 cfs Mar. 30, 1940 (gage height, 4.37 ft); minimum 

daily, 37 cfs Dec. 3, 1939.

Remarks. Records excellent. Difference in flow at this station and at station above tunnel (see preceding page) shows amount of diversion from Lake Almanor to Butt Creek and 

Butt Valley Reservoir plus natural local inflow from 0.3 sq mj of intervening drainage 

area.

£ooEeration.--Water-stage-recorder graph and six discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56 (gage height. In feet, and 

discharge, In cubic feet per second)

0.9 

1.3 

1.8 

2.5 

3.8

100

198

375

735

1,680

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22 

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

907

914

914

920 

920

914

914

914

914

927

927

920

920

920

920

920

920

927

927

920

920 

914 

914

907

907

907

900

894

594

900

900

28,336

914

56,200

Nov.

900

900

907

907 

914

914

907

*900

900

907

907

907

907

907

914

914

920

920

920

976

1.010 

962 

948

941

934

927

927

927

9ZO

920

27,664

922

54,870

Dec.

*920

920

920

920 

920

927

934

934

934

927

927

927

927

927

927

927

927

934

1,140

1,240

520 

1,560

1, 620

664

375

488

388

254

207

178

162

25,475

822

50,530

Jan.

149

135

130

128 

135

123

104

108

121

121

542

948

990

1,050

1,580

1,380

1,190

1,120

1,100

1,100

1,100 

1,120 

1,160

1,100

1,080

1,070

1,060

1,050

1,030

1,020

1,000

23,844

769

47,290

Feb.

1,000

*1,000

1,000

1,000 

990

976

969

969

955

955

955

948

948

955

948

934

955

955

955

941

955 

1,000 

1,100

1,080

1,070

1,050

1,030

1,020

1,020

28,633

987

56,790

Mar.

1,020

1,020

1,020

1,020 

1,020

1,020

1,010

1,000

1,000

1,000

1,000

1,000

997

WT

1,000

1,000

1,010

1,020

1,050

1,050

1,060 

1,070 

1,090

1,120

1,140

1,120

1,090

1,080

1,100

1,110

1,110

32 , 344

1,043

64,150

Apr.

1,100

1,070

1,070

1,100 

1,120

1,130

1,160

1,170

1,190

1,200

1,160

1,140

1,130

1,120

1,120

1,130

*1,150

1,160

1,220

1,260

1,290 

1,500 

984

402

406

406

351

324

320

967

29,650

988

58,810

May

1,220

1,220

1,290

1,540 1,4'20"

1,380

1,520

1,280

1,250

1,250

1,220

1,190

1,170

1,170

1,180

1,190

1,200

1,220

1,240

1,260

1,280 

1,290 

1,500

1,260

1,250

1,250

1,220

1 l Or* '724

268

248

56,450

1,176

72,500

June

726

l.llo

1,100

1,100 

1,070

1,060

1,060

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,040

1,020

1,020 

1,020 

1,010

1,000

1,000

1,000

997

990

990

985

50,806

1,027

61,100

July

985

983

983

985 

976

976

976

976

976

976

*969

969

976

976

969

969

969

969

969

969

969 

969 

969

969

976

976-

976

976

976

976

976

50,200

974

59,900

Aug.

976 969"

969

976 

976

969

969

969

*962

955

955

955

955

955

955

962

962

962

962

962

962 

955 

955

955

955

955

955

955

955

955

955

29,787

961

59,080

Sept.

955

955

955

955 

955

a955

a948

a948

a948

a948

a948

948

955

955

955

955

955

a960

a980

a960

a 955 

a 955 

a955

a955

948

a948

a948

948

948

948

28,601

953

56,730

Calendar year 1955: Max 1,620 Mln 53 Mean 585 Ac-ft 423,900

Water year 1955-56: Max 1,620 Min 104 Mean 961 Ac-ft 697,800

* Discharge measurement made on this day.

a No gage-height recordj discharge interpolated of estimated on basis of recorded range in stage, 

weather records, and records for station above Almanor-Butt Creek tunnel, near Prattville.
426 SACRAMENTO RIVER BASIN

Indian Creek near Crescent Mills, Calif.

Location. Lat 40°05', long 120°56', In SW£ sec. 25, T. 26 N. , R. 9 E., on left bank

0.8 mile upstream from Dixie Creek and 1.5 miles south of town of Crescent Mills. 

Drainage area. 746 sq ml. 

Records available. January 1906 to December 1909, September 1911 to March 1918, October

1930 to September 1956. 

Page.--Water-stage recorder. Altitude of gage Is 3,500 ft (from topographic map). Prior

to March- 1918, staff gage at site 800 ft upstream at different datum. 

Average discharge.--35 years (1906-9, 1911-17, 1930-56), 537 cfs (388,800 acre-ft per

year). 

Extremes. Maximum discharge during year, 31,500 cfs Dec. 24 (gage height, 17.80 ft), from

rating curve extended above 4,800 cfs on basis of slope-area determination of peak flow;

minimum, 9.0 cfs Oct. 1.

1906-9, 1911-18, 1930-56: Maximum discharge, that of Dec. 24, 1955; minimum, 1.7 cfs

Aug. 25, 1931.

Revisions. Figures of maximum discharge for the water years 1906 and 1907 have been

revised to 6,010 cfs Jan. 19, 1906 (gage height, 10.08 ft) and 25,000 cfs Mar. 19, 1907

(gage height, 20.2 ft), superseding figures published In WSP 298. 

Remarks. Records good. Storage In Round Valley Reservoir since 1865 and Taylor Lake

since 1929 (combined usable capacity, 5,000 acre-ft). Diversions above station for

Irrigation of about 11,800 acres, of which 9,700 acres are In Indian and Genesee

Valleys. 

Revisions. Revised figures of discharge, In cubic feet per second, for the water years

1906-9, superseding figures published In WSP 298, are given herewith:

Date

1906

Jan. 16

17

18

19

20

21

Mar. 1

11

12

13

14

15

22

23

24

25

26

27

28

29

30

31

Apr. 1-

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Discharge

2,680

2,680

4,900

6,010

3,060

1,450

1,640

1,680

3,360

3,560

2,520

1,890

1,750

2,560

3,660

4,460

4,520

4,140

3,410

2,910

2,810

4,140

4,010

2,910

2,360

2,040

1,780

1,820

2,200

2,600

3,060

3,260

3,160

2,860

2,680

2,680

2,860

3,060

3,260

3,160

3,060

3,160

Date

1906-Con.

Apr. 21

22

23

24

25

26

27

28

29

30

1907

Feb. 1

2

3

4

5

6

7

8

9

10

11

12

26

Mar. 17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Apr. 1

2

Discharge

3,26O

3,360

3,210

2,810

2,440

2,080

1,890

1,890

1,920

2,040

1,860

4,820

6,180

5,300

5,000

4,400

3,46O

2,600

2,120

1,86O

1,680

1,610

1,680

2,680

17,500

23,800

19,300

13,200

7,230

4,640

3,360

3,260

3,060

2,860

2,600

2,480

2,400

2,720

3,210

3,710

Date

1907-Con.

Apr. 3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

May 1

2

3

4

5

6

7

8

9

10

11

12

13

14

Discharge

3,660

3,310

3,160

2,76O

2,960

3,460

3,86O

4,460

5,360

6,180

6,250

6,460

8,140

8,000

6,670

5,830

5,480

5,300

5,000

4,520

4,400

4,520

4,460

4,340

4,110

3,910

3,660

3,360

3,110

3,010

2,910

2,810

2,600

2,480

2,400

2,320

2,360

2,400

2,520

2,640

2,520

2,280

Date

1907-Con.

May 15

16

17

18

19

2O

21

22

23

24

Nov. 8

1909

Jan. 6

7

8

9

10

14

15

16

17

18

19

20

21

22

23

24

25

26

27

Apr. 3

4

5

6

7

8

9

10

11

12

Discharge

2,O4O

2,080

2,120

2,120

2,240

2,24O

2', 280

2,040

1,780

1,610

137

1,820

1,820

3,310

3,710

1,960

4,280

11,900

17,500

12,800

8,140

5,690

6,250

7,650

7,790

4,280

3,060

2,560

2,280

1,890

1,640

2,080

2,200

1,890

1,750

1,750

1,750

1,960

2,200

2,040

Date

1909-Con.

Apr. 13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

May 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

17

18

19

20

21

22

23

Discharge

2,120

2,400

2,680

3,86O

3,960

4,060

4,280

4,340

3,760

3,410

3,16O

3,060

3,060

3,O60

3,260

3,460

3,310

3,110

2,960

2.91O

2,960

3,060

3,260

3,260

3,060

2,960

2,860

2,760

1,820

2,360

2,200

2,040

1,890

1,750

1,720

1,680

1,640

1,640

1,640

1,610

Month

Water year 1905-6. .................

Calendar year 1906 .................

Water year 1906-7. .................

November 1907. ................... ...

Calendar year 1907. ................

Water year 1907-8. .................

Calendar year 1909 .................

Maximum

-

23,800

1,540

12,800

3,260

12,800

Minimum

-

1,180

71

129

71

.12

164

1,080

1,180

16

Mean

-

2,260

1,320

138

381

3,860

2,740

2,100

1,070

Runoff in 

acre-feet

-

125/000

959,000

277,000

237,000

163,000

129,000

773,000
SACRAMENTO RIVER BASIN

Indian Creek near Crescent Mills, Calif. Continued

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.0 

1.3 

1.7 

2.1 

2.5 

3.0 

3.5 

4.0

6.5

18

120

206

310

450

5.0

6.0

8.0

10.0

12.0

14.0

17.0

830

1,320

2,700

5,200

9,000

14,900

27,500

2.0 

2.4 

3.0 

4.0 

5.0

74

128

235

500

930

6.0

8.0

10.0

12.0

14.0

16.0

17.0

1,560

3,260

5,820

9,800

15,200

22,500

27,500

Discharge., In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

I"9.3

10

11 

11

11

11

12

13

16

18

20

17

17

18

20

20

*20

21

22

25

27

28

29

30

32

33

36

36

38 

17

658.3

21.2

1,310

Nov.

 37 36

38

39 

45

44

43

42

45

45

41

43

45

49

50

61

58

60

74

115

240

144

102

87

80

74

73

72

71

69

2,022

67.4

4,010

Dec.

*77

80

79

70 

75

165

133

118

141

120

105

98

96

92

88

92

105

208

*2,060

*3,840

*3,960

12,100

25.400

*22, 700

7,110

5,620

7,920

*4,710

3,070

*2,110

1,700

104,242

3,363

206,800

Jan.

1,540

1,340

1,100

1.060 

1,530

1,400

1,550

1,910

1,500

1,410

1,280

1,190

1,450

2,040

3,090

6.180

*4,870

3,380

*2,610

2,300

2,160

2,030

2,300

2,330

2,080

2,220

2,170

1,840

1,620

1,390

1,180

64,050

2,066

127,000

Feb.

992

890

870

855 

825

776

717

*704

634

630

626

646

658

658

618

524

538

535

549

702

1,460

3,340

4.510

2,900

1,700

1,250

1,000

885

880

_

31,872

1,099

63,220

Mar.

805

820

955

1,100 

1,130

920

840

855

870

950

1,010

940

*945

980

980

1,050

1,230

1,490

1,790

2,080

2,390

2,750

3,170

3,640

4,160

4.650

4,150

3,470

3,190

3,210

3,370

59,890

1,932

118,800

Apr.

3,120

2,600

2,220

2. 080 

2,260

*2,470

2,650

2,870

3,000

3,240

3,270

2,960

2,770

2,760

2,960

2,890

2,780

2,760

2,940

3,260

3,590

3,840

4,020

4.100

4,020

3,860

3,630

3,180

2,820

2,670

91, 590

3,053

181,700

May

2,620

2,650

2,650

3,280 

3.790

3,620

3,430

*3,130

2,820

2,680

2,530

2,250

2,000

1,840

1,780

1,870

2,040

2,130

2,180

2,300

2,440

2,540

2,660

2,580

2,380

2,200

2,140

1,910

1,770

1,730

1 . 690

75,630

2,440

150,000

June

1.510

1,400

1,350

1,260 

1,100

998

935

890

855

810

766

712

*658

622

650

590

552

518

494

488

449

428

404

389

368

350

332

312

305

275

20,768

692

41,190

July

215

204

206

202 

196

191

178

157

150

155

144

136

134

144

134

120

116

103

*81

74

75

80

76

73

84

160

125

106

100

90

79

4,088

132

8,110

Aug.

74

71

70

67 

58

56

53

35

32

32

38

35

38

32

30

*34

28

25

24

27

44

34

30

35

32

29

35

32

31

30

1,216

39.2

2,410

Sept.

30

29

30

32 

29

28

28

25

28

Z2

24

25

28

34

30

33

39

50

88

91

80

74

70

71

*75

73

74

74

79

78

1,471

49.0

2,920

Calendar year 1955: Max 25,400 Mln 2.0 Mean 449 Ac-ft 325,300

Water year 1955-56: Max 25,400 Mln 9.3 Mean 1,250 Ac-ft 907,500

a.m.) 

(10.74

» a.\s ex yeax- j.3o«j-ao ; PIO.A £.3, *tuu vu.ii. y . o nccui ->- 1 t»<*>v tm ± o ^v i , *jw

Peak discharge (base. 1.100 cfs). Dec. 24 (12:30 a.m.) 31,500 cfs (17.80 ft): Dec. 27 (6 

9,OOO cfs (11.68 ft); Jan. 8 (3 to 4 a.m.) 2,060 cfs (6.68 ft); Jan. 16 (3 p.m.) 7,110 cfs iiu.74 

ft); Feb. 23 (12 m.) 4,720 cfs (9.27 ft); Mar. 5 (2 a.m.) 1,240 cfs (5.53 ft); Mar. 26 (2:30 p.m. 

4,860 cfs (9.37 ft); Apr. 10 (l2 p.m.) 3,350 cfs (8.09 ft); Apr. 24 (l p.m.) 4,140 cfs (8.80 ft); 

May 5 (9 a.m.) 3,830 cfs (8.54 ft); May 23 (9:30 a.m.) 2,710 cfs (7.44 ft).

Discharge measurement made on this day.
428 SACRAMENTO RIVER BASIN

Spanish Creek above Blackhawk Creek, at Keddie, Calif.

Location. Lat 40°00'05", long 120°57'20", in NEir sec. 27, T. 25 N., R. 9 E., on right 

bank 200 ft upstream from Blackhawk Creek and 0.9 mile southeast of Keddie.

Drainage area.--184 sq mi.

Records available.--October 1933 to September 1956. Prior to October 1953, published as 

"at Keddie."October 1911 to September 1933 at site 1.2 miles downstream; records not 

equivalent because of inflow.

Gage. Water-stage recorder. Altitude of gage is 3,250 ft (from topographic map). 

Average discharge. 23 years, 265 cfs (191,900 acre-ft per year).

Extremes. Maximum discharge during year, 13,100 cfs Dec. 23 (gage height, 12.47 ft), 

from rating curve extended above 4,400 cfs on basis of slope-area determination of 

peak flow; minimum, 24 cfs Oct. 3, 4, 9.

1933-56: Maximum discharge, that of Dec. 23, 1955; minimum, 3.8 cfs Aug. 12, 1934.

Remarks.--Records good. Flow regulated by five small reservoirs having a combined capacity of 800 acre-ft. Approximately 4,600 acres irrigated above station (from information furnished by D. S. Forest Service). City of Quincy diverts about 450 acre-ft 

annually for municipal supply.

Revisions (water years).--WSP 1041: 1938(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.3 

1.5 

1.9 

2.3 

2.7 

3.1

59

106

198

345

3.5 

4.0 

5.0 

7.0 

9.0 

12.0

530

805

1,600

3,820

6,740

12,200

1.0 

1.4 

1.9 

2.4 

2.9

143

278

3.5 

4.0 

5.0 

6.0 

7.5

535

820

1,600

2,640

4,480

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14.

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

26

26

25

24

26

26

26

26

29

32

43

37

35

34

34

32

32

32

32

32

*32

32

32

32

32

34

36

34

34

34

34

975

31.5

1,930

Nov.

34

34

34

35

36

36

36

36

35

36

36

36

37

40

41

44

43

43

53

106

230

94

74

64

59

56

55

54

53

52

1,622

54.1

3,220

Dec.

*62

72

68

61

63

284

182

120

155

124

98

91

87

82

78

83

132

362

4,420

*3,290

2,390

7,990

*11.000

3,720

1,590

3,740

*2 , 550

1,350

913

*684

585

46,426

1,498

92,080

Jan.

560

480

413

467

768

585

1,160

1,100

695

774

713

618

1,010

1,540

2.670

2,390

*1,330

990

820

800

788

768

1,120

852

800

1,420

1,120

820

668

575

500

29,314

946

58,140

Feb.

436

400

375

355

339

327

311

304

285

271

268

275

282

282

268

233

239

236

233

316

1,150

4.140

3,600

1,320

892

690

575

525

505

19,432

670

38,540

Mar.

462

467

510

602

607

490

436

431

462

505

510

462

*449

458

454

476

555

656

737

794

820

872

934

1,030

1,090

1.100

885

762

743

781

794

20,334

656

40,330

Apr.

684

585

535

520

575

*618

668

707

755

840

755

719

662

651

684

646

684

707

800

899

976

997

1.040

1,020

969

1,030

826

713

673

_678

22,616

754

44,860

May

701

719

743

1.870

1,370

1,340

1,150

*962

859

781

755

656

585

560

555

607

662

684

684

731

768

807

820

743

684

640

624

565

555

545

510

24,235

782

48,070

June

472

444

440

431

375

355

335

331

311

300

296

271

*258

255

278

248

230

215

212

215

202

188

181

169

158

151

141

132

124

121

7,839

261

15,550

July

116

116

113

110

105

93

89

88

82

86

69

57

56

78

90

79

75

71

*68

66

60

58

59

93

69

68

63

63

64

56

40

2,400

77.4

4,760

Aug.

42

53

61

56

54

55

52

50

46

46

44

44

44

45

39

*32

32

33

34

36

36

35

36

35

34

35

36

32

30

31

31

1,269

40.9

2,520

Sept.

30

27

27

28

30

41

38

36

35

36

37

37

39

38

37

37

36

37

71

25.

57

53

50

49

*48

48

48

49

48

46

1,268

42.3

2,520

Calendar year 1955: Max 11,000 Mln 14 Mean 236 Ac-ft 170,800

Water year 1955-56: Max 11,000 Mln 24 Mean 486 Ac-ft 352,500

Peak discharge (base. 850 cfs). --Dec. 19 (8 p.m.) 7,500 cfs (9.45 ft); Dec. 23 (3:30 p.m.) 13,100 

fs (12.47 ft); Dec. 26 (6 p.m.) 6,290 cfs (8.72 ft); Jan. 5 (8 a 

(8:30 p.m.) 2,380 cfs (5.76 ft); Jan. 15 (8 p.m.) 4,170 cfs (7.27

(10 p.m. 

(5.56 ft).

. .. , .

(4.63 ft); Jan. 26 (2 p.m.) 2,070 cfs (5.48 ft); Feb. 22 (10 p.m.) 6,680 cf

(4.51 ft); May 4 (3:30 a.m.) 2,160 cf

.m.) 872 cfs (4.08 ft); Jan. 

ft); Jan. 23 (7:30 a.m.) 1,280 cfa

.

.m.) 1,190 cfs 

Discharge measurement made on this day.

(8.96 ft); Mar. 26
SACRAMENTO RIVER BASIN 429

East Branch of North Fork Feather River near Rich Bar, Calif.

Location. Lat 40°01', long 121°13', in NE^ sec. 20, T. 25 N., R. 7 E., on left bank 

0.4 mile upstream from mouth and 1.5 miles west of Rich Bar.

Drainage area. 1,035 sq mi.

Records available. October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,300 ft (from topographic map). Prior 

ifo Nov. 29, 1950, at site 30 ft downstream at same datum.

Average discharge. 6 years, 1,309 cfs (947,700 acre-ft per year).

Extremes.--Maximum discharge during year, 48,000 cfs Dec. 23 (gage height, 16.52 ft), 

from rating curve extended above 15,000 cfs on basis of study of upstream and downstream peak discharges; minimum, 61 cfs Oct. 3.

1950-56: Maximum discharge, that of Dec. 23, 1955; minimum, 39 cfs Sept. 6, 7, 

1955.

Remarks. Records good. No storage or diversion between stations on Indian and Spanish 

Creeks and station near Rich Bar.

Revisions (water years).--WSP 1245: 1951(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1 to Nov. 20, Dec. 21-22, Feb. 5-21)

2.2 

2.4 

2.7 

3.0 

3.5 

4.0

Oct. 1 to Dec. 19 

53

Dec. 20 to Sept. 30

123

184

330

510

5.0 

6.0

7.0

8.0

9.0

10.0

930

1,560

2,520

4,060

6,360

9,850

5.0 

5.4 

5.8 

6.2 

6.6 

7.0 

7.5

104

185

340

56O

810

1,100

1,620

8.0

9.0

10.0

12.0

14.0

16.0

2,360

4,200

6,800

15,700

28,100

43,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3O

31

Total

Mean

Ac- ft

Oct.

65

64

64 

63

64

65

65

65

65

79

91

91

86

82

81

81

81

*82

82

84

86

89

94

94

95

101

106

107

107

109

110

2,598

83.8

5,150

Nov.

110

110

110 

112

117

117

115

112

112

118

117

117

123

128

127

139

143

143

155

264

554

368

255

215

194

179

175

*172

170

168

5,039

168

9,990

Dee.

179

202

197 

187

179

445

474

340

376

358

292

267

255

240

232

232

282

499

7,200

9,980

*7,010

18,700

38.500

31,700

11,200

10 , 600

12,800

*7,070

4,600

3,460

2,860

170,916

5,513

339,000

Jan.

2,620

2,360

2,030 

1.950

2,860

2,630

3,160

4,060

2,910

2,810

2,660

2,440

2,890

4,110

6,190

9.600

*7,310

*5,030

4,040

3,700

3,560

3,330

3,920

3,800

3,460

4,080

4,000

3,310

2,840

2,470

2,120

112,230

3,620

222,600

Feb.

1,820

1,600

1,520 

1,490

1,420

1,320

1,240

1,160

*1,090

1,080

1,070

1,080

1,090

1,100

1,070

929

936

929

971

1,130

2,920

8,440

10 . 300

5,090

3,350

2,490

2,070

1,860

1,770 -

62,335

2,149

123,600

Mar.

1,660

1.620

1,730 

2,090

2,250

1,860

1,650

1,620

1,630

1,770

1,890

*1,730

1,700

1,750

1,750

1,800

2,070

2,440

2,820

3,180

3,480

3,840

4,240

4,680

5,300

5.780

5,300

4,560

4,260

4,280

4,420

89,150

2,876

176,800

Apr.

4,200

*3,640

3,180 

2,990

3,170

3,420

2.750

3,940

4,100

4,360

4,340

4,040

3,820

3,760

5,960

5,900

5,860

5,860

4,100

4,260

4,850

5,120

5,280

5.520

5,200

5,100

4,72O

4,260

3,920

3,780

125,180

4,106

244,500

May

5,740

5,800

5,820 

5,450

5.500

5,280

*4,920

4,480

4,120

5,900

5,720

5,350

3,020

2,810

2,720

2,840

3,080

5,200

3,270

5,420

5,600

5,740

3,880

5,760

3,460

5,220

5,090

2,860

2,660

2,600

2,500

111,810

5,607

221,800

June

2. 280

2,140

2,070 

1,970

1,750

1,600

1,500

1,440

1,400

1,530

1,280

1,200

*1,130

1,070

1,150

1,040

999

964

908

915

852

817

789

740

704

680

662

626

596

566

55,128

1,171

69,680

July

482

452

440 

435

420

400

590

360

531

526

526

287

274

291

522

*282

274

261

254

210

200

200

204

251

216

261

278

242

225

216

185

9,253

298

18,350

Aug.

175

175

185 

182

177

169

169

157

141

157

153

157

*155

141

135

126

124

118

117

117

118

120

129

122

118

122

120

118

117

114

112

4,258

157

8,450

Sept.

112

110

105 

107

108

112

117

115

112

114

111

114

114

118

120

118

118

129

185

246

197

177

169

164

*167

167

167

167

164

172

4,196

140

8,520

Calendar year 1955: Max 38,500 Min 39 Mean 815 Ac-ft 590,200

Water year 1955-56: Max 38,500 Min 63 Mean 1,995 Ae-ft 1,448,000

Apr. 24 (5 

(8.85 ft).

* Discharge measurement made
430 SACRAMENTO RIVER BASIN

Bucks Lake near Bucks Lodge, Calif.

Location. Lat 39°53'45", long 121°12'10", in NW£ sec. 33, T. 24 N., R. 7 E., in intake 

tower No. 2 upstream from dam on Bucks Creek, 2 miles northwest of Bucks Lodge and 

15 miles west of Quincy.

Drainage area.--28 sq mi, approximately.

Records available. 1927. 1928 (summary of yearly contents in WSP 881), October 1928 to 

September 1956. Prior to October 1954, published as Bucks Creek Reservoir near Bucks 

Ranch.

Gage. Water-stage recorder. Datum of gage is at mean sea level (levels by Feather River 

Power Co.).

Extremes. Maximum contents during year, 102,300 acre-ft June 22-24; maximum elevation, 

5,155.2 ft June 23, 24; minimum contents, 29,400 acre-ft Dec. 16 (elevation 5,107 4 ft)

1928-56; Maximum contents, 105,800 acre-ft June 23, 1938 (elevation, 5 157.1 ft)- 

minimum, 12,330 acre-ft Feb. 27, 1929 (elevation, 5,090.7 ft).

Remarks.--Reservoir is formed by concrete-faced rock-fill dam completed in 1927; storage 

began in May 1927. Capacity, 101,400 acre-ft between elevations 5,064.75 ft (sill of 

outlet gate) and 5,154.85 ft (spillway crest) above mean sea level. Released water 

flows down Bucks Creek to Lower Bucks Lake, where it enters tunnel that discharges into 

Grizzly Creek, thence to Bucks Creek powerhouse. Records show total contents at 

12 p.m., of which 274 acre-ft are not available for release.

Cooperation.--Records of contents furnished by Pacific Gas & Electric Co. in connection 

with a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, and contents, 

In acre feet)

5,107.0

5,110

5,113

5,116

5,119

5,122

5,125

5,128

5,131

28,900

32,500

36,200

40,100

44,100

48,300

52,500

57,000

61,500

5,134

5,137

5,140

5,143

5,146

5,149

5,152

5.155

5.156

66,200

71,000

75,900

80,900

86,000

91,200

96,500

101,900

103,800

Contents, in thousands of acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29 

30

31

(t)

(*)

Oct.

42.4 

42.1

41.7

41.2

40.8

40.2

40. 0

39.8

39.7

39.6

39.6

39.1

38.5

38.3

38.0

38.0

37.9

37.9

37.9

37.9

38.0

38.0

38.0

37.9

37.5

38.4

36.7 

36.4

36.2

36.0

 zc c 03.6

5,112.5

-7,000

Nov.

if* 34.7

34.2

34.1

34.1

33.9

33.6

33.5

33.3

33.0

33.0

33.1

33.1

33.0

32.9

32.6

32.4

32.3

32.2

32.3

32.3

32.0

31.8

31.6

31.8

31.7 

31.7

31.3

30-8

5,108.6

-4,800

Dec.

30.7 

30.5

30.5

30.6

30.7

30.8

30.7

30.7

30.7

30.6

30.6

30.5

30.4

30.0

29.8

29.4

29.5

29.5

29.6

34.6

37.0

46.4

53.9

54.3

55.9

58.5

59.4 

60.0

60.0

lal 2"

5,130.8

+30,400

Jan.

61.2 

62.5

62.9

63.4

63.9

64.0

64.6

64.6

64.6

64.6

64.6

64.5

64.8

65.4

67.2

68.0

68.6

69.1

69.6

70.2

70.7

71.3

72.0

72.5

72.9

73.6

73.8 

73.8

73.8

73.6

73 .3

5,138.4

+12,100

Feb.

73.1 

72.8

72.6

72.3

72.1

71.8

71.5

71.3

71.3

71.2

70.8

70.5

70.3

70.0

69.7

69.4

69.4

69.4

69.4

69.4

69.3

69.7

69.6

69.3

69.3

69.0

68.7 

68.3

68. 0_

5,135.1

-5,300

Mar.

67.7 

6774

67.1

67.0

67.1

66.7

66.2

65.9

65.4

65.2

64.8

64.7

64.2

63.9

63.6

63.2

62.9

62.6

62.3

62.0

61.7

61.5

61.3

61.1

60.8

60.7

60.5 

60.2

60.0

59.8

59.8

5,129.9

-8,200

Apr.

59.5 

59.2

59.0

58.8

58.6

58.4

58.3

58.1

58.0

58.0

58.0

57.8

57.8

57.6

57.4

57.3

57.1

57^0

57.0

57.1

57.3

57.4

57.7

58.3

59.1

59.8

60.4 

60.9

61.4

6074

5,130.3

+600

May

60.4 

62.8

63.9

65.3

66.5

67.5

68.3

69.1

69.9

70.7

71.3

72.0

72.6

73.3

74.1

74.9

75,9

76.9

77.1

79.2

80.5

81.9

83.3

84.6

85.8

87.1

88.1 

89.4

90.5

91.7

92.8

5,149.9

+32,400

June

*H95.7

96.6

97.4

97.9

98.5

98.2

99.4

99.9

100.3

100.5

100.7

100.8

100.8

101.1

101.3

101.6

101.8

102.0

102.1

102.3

102.3

102.3

102.1

102.1

101.7 

101.4

101.2

100.8

5,154.4

+8,000

July

(

100.5 

100.1

99.7

99.4

99.0

98.6

98.1

97.8

97.3

96.9

96.4

96.0

95.5

95.3

94.8

94.4

93.9

93.4

93.0

92.6

92.1

91.6

91.2

90.7

90.1

89.7

89.2 

88.7

88.2

87.7

87.2

5,146.7

-13,600

Aug.

86.7 

86.1

85.7

85.2

84.7

84.2

83.7

83.2

82.7

82.3

81.8

81.3

SO. 8

80.1

79.8

79.3

78.8

78.3

77.8

77.4

76.9

76.4

75.8

75.4

74.9

74.4

74.0 

73.5

72.9

72.5

72.1

5,137.7

-15,100

Sept.

"ntr

70.6

70.1

69.6

69.1

68.6

68.1

67.6

67.2

66.6

66.2

65.6

65.0

64.7

64.2

63.8

63.5

63.1

62.6

62.3

61.8

61.3

60.9

60.4

59.9

59.4 

59.1

58.6

58.1

5,128.8

-14,000

Calendar year 1955 .................... * +29,600

Water year 1955-56 .................... * +15,500

t -Elevation, in feet, at end of month. 

* Change In contents In acre-feet.
SACRAMENTO RIVER BASIN 431

North Fork Feather River at Big Bar, Calif.

Location. Lat 39°48', long 121°27', In NE^ sec. 6, T. 22 N., R. 5 E., on left bank

between railroad and highway bridges, 0.2 mile downstream from Big Bar and 6 miles upstream from Intake of powerplant at Big Bend.

Drainage area. 1,945 sq ml.

Records available. February 1911 to August 1930, October 1931 to September 1937, October 

1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,320 ft (from topographic map). Prior 

to Oct. 1, 1937, at site 0.8 mile upstream at different datum.

Average discharge. 40 years (1911-12, 1913-20, 1921-30, 1931-37, 1939-56), 2,834 ofs 

(27052,000 acre-ft per year).

Extremes. Maximum discharge during year, 72,400 ofs Dec. 23 (gage height, 30.60 ft), 

from rating curve extended above 34,000 cfs by logarithmic plotting; minimum dally, 

1,010 cfs Oct. 2.

1911-37, 1939-56: Maximum discharge, that of Dec. 23, 1955, minimum dally, 235 cfs 

Oct. 31, 1932.

Remarks. Records good. Flow regulated by Lake Almanor (see p. 422 ), Bucks Lake (see 

preceding page) Butt Valley Reservoir, Cresta, and Rock Creek powerplants, and diversions.

Cooperation. Water-stage-recorder graph and 11 discharge measurements furnished by Paoiflo Gas & Electric Co. In connection with a Federal Power Commission project.

Revisions (water years). WSP 931: 1938(M), 1940.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

2.7 

3.5 

5.0 

8.0

970

1,380

2,420

5,400

12.0

16.0

20.0

25.0

11,000

19,600

31,800

49,200

4.0 

6.0

10.0

1,840

3,730

9,800

15.0 20,100

20.0 34,000

28.0 62,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18 

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1,100

1.010 

1,130 

1,200

1,300

1,370

1,510

1,100

1,040

1,540

1,570

1,570

1,570

1,370

1,350

1,280

1,220 

1,250 

1,390

1,440

1,440

1,400

1,090 

1,260

1,450

1,450

1,520

1.550

17486"

1,260

1,430

40,800

1,516

80,950

NOV.

1,580

1,720 

1,620 

1,510

1,160

1.050

*1,300

1,550

1,540

1,540

1,530

1,250

1,150

1,560

1,570

1,600

1,890 

2,000 

1,770

1,770

2.420

2,500

1,600 

1,540

1,570

1,590

1,250

1,510

*1,370

1,430

------

46,840

1,561

92,910

Dec.

1,840

1,720 

1,490 

1,460

1,570

2,770

1,940

1,950

2,080

1,910

1.190

1,640

1,940

2,050

2,060

2,050

2,520 

5,020 

19,500

*24,700

*22,000

46,700

59.800 

54,200

15,500

20,500

18,900

15,000

8,500

*7,000

6,100

531,380

10,690

657,300

Jan.

5,650

5,190 

4.710 

4,840

6,500

5,820

7,090

7,890

6,520

6,220

*S,920

5,490

6,990

10,800

16.500

15,800

10,900 

9,850 

8,510

8,500

8,000

7,840

8,710 

7,960

7,670

8,750

8,440

7,250

6,470

*5,870

5,450

241,480

7,790

479,000

Feb.

5,000

4,700 

4,570 

4,520

4,250

4,220

4,180

4,140

4,100

4,090

4,360

4,640

4,720

4,700

4,630

4,570

4,020 

5.460 

3,590

4,600

6,600

16,700

17.200 

10,700

 8,050

6,500

5,800

5,550

5,150

-

-...--

168,470

5,809

334,200

Mar.

5.000

5,520 

5,900 

5,870

6,440

5,900

5,550

5,550

5,520

5,660

5,630

5,600

*6,060

6,120

6,100

5,990

6,420 

6,880 

7,430

7,860

8,170

8,560

9,070 

9,770

10,500

10 . 900

9,630

8,020

7,560

7,590

7,650

218,420

7,046

455,200

Apr.

7,450

6,690 

6,100 

5.650

6,050

6,400

6,710

6,930

7,450

7,760

7,670

7,240

6,840

6,610

6,520

*6,690

6,790 

6,870 

7,550

8,020

8,470

8,850

9.200 

9,150

9,020

9,090

8,390

7,620

7,270

7,140

222,110

7,404

440,500

May

7,200

7,280 

7,520 

11.200

10,500

9,660

8,950

8,500

7,780

7,600

7,700

7,110

6,580

6,550

6,420

6,770

7,190 

7,580 

7,220

7,650

7,720

7,960

8,020 

7,670

7,560

7,060

6,770

6,200

5.960

6,480

6,480

253,840

7,543

465,800

June

6,710

7.060 

7,060 

6,920

6,560

5,860

5,400

4,680

4,270

4,010

4,070

5,950

5,850

5,860

4,240

4,570

4,200 

4,370 

4,070

3,970

4,010

4,070

5,970 

5,730

3,230

3,130

2.420

2,870

2,780

2,810

------

132,300

4,410

262,400

July

2,670

2.650 

2,730 

2,460

2,420

2,370

2,590

2,550

2,240

*2,080

1,980

1,970

1,950

1,940

1,940

2,010

2,110 

2,150 

2,070

2,030

1,910

1.870

2,060 

2,550

2,550

2,550

2,590

2,370

2,370

2,350

2,540

69,400

2,259

157,700

Aug.

2,560

2.560 

2,580 

2,370

2,360

*2,290

2.190

2,240

2,260

2,260

2,270

2,220

2,220

2,280

2,500

2,250

2,500 

2,520 

2,520

2,290

2,500

2,510

2,520 

2,540

2,550

2,550

2,350

2,350

2,540

2,360

2,550

71,520

2,507

141,900

Sept.

2,350

2,350 

2,560 

2,550

2,540

2,330

2,340

2,540

2,550

2,540

2.570

2,360

2,360

2,560

2,550

2,510

2.270 

2,290 

2,520

2,500

2,550

2,520

2,500 

2,280

2,290

2,500

2,520

2,520

2,520

2,280

69,780

2,326

138,400

Calendar year 1955: Max 59,800 Mln 586 Mean 2,388 Ac-ft 1,729,000

Water year 1955-56: Max 59,800 Min 1,010 Mean 5,045 Ac-ft 3,662,000

* Discharge measurement made on this day.
432 SACRAMENTO RIVER BASIN

West Branch Feather River near Yankee Hill, Calif.

Location. Lat 39°41'55", long 121°33'38", in SEi^SE^ sec. 6, T. 21 N., R. 4 E., on right 

bank 800 ft upstream from highway bridge, 1.7 miles downstream from Concow Creek, 

2.1 miles west of Yankee Hill, and 4.9 miles southeast of Paradise.

Drainage area. 145 sq mi.

Records available. September 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 650 ft (from topographic map).

Average discharge. 26 years, 354 cfs (256,300 acre-ft per year).

Extremes.--Maximum discharge during year, 21,300 cfs Dec. 22 (gage height, 30.2 ft), from 

rating curve extended above 15,000 cfs; minimum, 2.9 cfs Sept. 6.

1930-56: Maximum discharge, 21,400 cfs Dec. 11, 1937 (gage height, 30.3 ft), from 

rating curve extended above 15,000 cfs; minimum, 0.3 cfs Jan. 8, 1937 (gage height, 

1.69 ft).

Remarks. Records good except those for period of no gage-height record, which are fair. 

Spring Valley ditch diverts water from Concow Creek below Lake Wilenor (capacity, 8,210 

acre-ft) for power development and irrigation. Dewey, Miners, and Hendricks Canals 

divert from headwaters of West Branch Feather River into Butte Creek basin (see p. 410) 

for power development in DeSabla and Centerville plants of Pacific Gas & Electric Co. 

Round Valley Reservoir (capacity, 1,285 acre-ft) and Phllbrookjteservoir capacity, 

5,010 acre-ft) provide storage on headwaters for these three canals.

Rating tables, water year 1955-56 (gage height, in feet 

and discharge, in cubic feet per second)

Oct. I to Dec. 23 Dec. 24 to Sept. 30

2.0

2.1

2.2

2.3 

2.5 

2.7 

3.0 

3.5 

4.0

11

24

38

63

114

181

4.5

5.0

6.0

8.0

11.0

14.0

18.0

23.0

28.0

259

368

650

1,340

3,000

5,340

8,900

13,800

18,900

2.8

2.9

3.0 

3.1- 

3.2 

3.5

1.5

3.5

6.5

11

17

40

4.0 

5.0 

6.0 

8.0 

11.0

98

260

485

1,240

3,000

Mote.--Same as preceding 

tab~Te~above 11.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

5.2

5.2

5.2

5.2 

5.2

5.0

5.0

5.0

4.2

772

8.7

77?

5.8

5.2

5.0

5.5

5.5

*5.2

5.2

5.2

5.2

5.2 

5.2

5.0

5.0

8.3

6.6

5.8

5.5

5.2

5.2

173.1

5.58

343

MOV.

5.0

5.8

5.2

5.2 

5.2

5.5

5.5

5.2

5.0

5.0

6.9

6.6

8.7

25

9.9

9.1

14

9.5

33

167

367

42

37

15

9.5

7.6

7.2

9.1

8.0

916.7

30.6

1,820

Dec.

33

51

26

15 

43

1,020

296

136

235

127

85

81

*67

59

53

63

290

1,370

8,170

7,460

8,700

a!5,000 

310,000

a5,000

a2,500

34,500

a3 , 200

*2,280

1,610

1,230

1,020

74,720

2,410

148,200

Jan.

1,050

872

788

1,040 

1,520

1,240

3,070

2,470

1,400

1,380

1,220

984

1,870

5,210

7,840

4,500

2,580

1,840

1,510

1,720

1,720

1,820 

1,980

1,420

1,540

2,150

1,620

1,240

1,020

884

780

60,278

1,944

119,600

Feb.

703

647

602

569 

533

491

450

425

390

368

354

344

334

318

*304

288

288

280

298

2,160

3,370

8,270 

5,160

2,320

1,660

1,330

1,100

980

892

35,228

1,215

69,870

Mar.

780

756

728

710 

664

593

530

500

485

475

460

435

412

412

402

398

448

465

500

485

*465 

491

527

563

605

551

488

485

518

515

16,276

525

32,280

Apr.

475

430

400

388 

125

452

485

509

548

612

596

551

485

442

415

395

415

438

521

630

742

731 

824

824

770

852

714

616

616

664

16,965

566

33,650

May

686

724

773

1.870 

1,450

1,330

1,040

880

808

752

864

724

626

616

647

804

864

884

888

976

980

1,030 

*1,020

912

900

864

836

728

738

773

762

27,749

895

55,040

June

612

584

612

630 

5"OT>

455

445

452

560

460

445

344

310

304

296

282

260

262

300

288

242

233

256

249

226

206

185

164

153

T53

10,368

346

20,560

July

143

133

105

70 

5S

57

52

50

43

36

31

28

24

23

24

23

17

11

8.8

6.5

6.5

7.8 

7.4

7.4

*5.9

5.3

4.7

4.1

47T

4.1

4.1

1,004.7

32.4

1,990

Aug.

3.8

375

3.1

ITl

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8 

3.8

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

110.6

3.57

219

Sept.

3.5

3.8

3.5

3.3

3.1

3.1

3.1

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.5

3.5

7.0

*18

18

9.2 

6.5

5.3

4.7

4.4

4.4

4.4

4.1

4.1

150.2

5.01

298

Calendar year 1955: Max 15,000 Mln 4.0 Mean 313 Ac-ft 226,300

Water year 1955-56: Max 15,000 Mln 3.1 Mean 667 Ac-ft 483,900

Peak discharge (base, 1,700 cfs). --Dec. 19 (7 p.m.) 12,400 cfs (21.65 ft); Dec. 22 (time unknown)

21,300 cfs (30.2 ft); Dec. 26 (time and discharge unknown); Jan. 7 (7 p.m.) 5,730 cfs (14.48 ft);

Jan. .15 (3:30 p.m.) .. 10,200 , cfs (19.35 . ft); Jan. .22 (8 p.m.) .. 2,430 , cfs (10-14 - ft); Jan. .26 (8 a.m.) .. 

2,810 cfs (10.73 ft); Feb. 22 (8 p.m.) 12,200 cfs (21.35 ft); May 4 (4 a.m.) 2,160 cfs (9.69 ft).

* Discharge measurement made on this day.

a Mo gage-height record; discharge estimated on basis of floodmarks and records for Big Chico 

Creek near Chieo and Butte Creek near Chico.
SACRAMENTO RIVER BASIN 433

Feather River near Orovllle, Calif.

Location. Lat 39°32'00", long 121°28'35", in NE£ sec. 2, T. 19 N., R. 4 E., on left bank

 75 ft upstream from bridge on Feather River Highway, 1.9 miles downstream from North 

Fork, and 4 miles northeast of Oroville business district.

Drainage area. 3,611 sq mi.

Records available. January 1902 to September 1956. Prior to October 1934, published as 

"at Oroville."

Gage.--Water-stage recorder. Datum of gage is 182.02 ft above mean sea level, datum of

 TT929. Jan. 1, 1902, to Dec. 15, 1912, staff gages at several sites abouve 5.2 miles 

downstream at various daturas. Dec. 16, 1912, to Sept. 30, 1934, water-stage recorder 

at site 5.2 miles downstream at datum 139.53 ft above mean sea level, datum of 1929.

Average discharge.--54 years, 5,890 cfs (4,264,000 acre-ft per year).

Extremes.--Maximum discharge during year, 203,000 cfs Dec. 23 (gage height, 76.77 ft); min-

 liumT 1,250 cfs Oct. 2 (gage height, 5.52 ft).

1902-56: Maximum discharge observed, 230,000 cfs Mar. 19, 1907 (gage height, 

28.2 ft, reading on U. S. Weather Bureau staff gage at bridge, equivalent to 39.3 ft 

at staff gage at cable 1,000 ft upstream; probably had been higher during night); minimum. 300 cfs (estimated) Nov. 9, 1931 (gage height, -1.7 ft, site and datum 1-hen in 

use).

Remarks.--Records excellent. Flow partly regulated by powerplants and Lake Almanor (see

 pTT24 ), Bucks Lake (see p. 430), Butt Valley Reservoir, and smaller reservoirs. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions (water years) . WSP 843; 1907(M), 1909(M), 1914-15(M), 1917(M), 1927-28(M). 

WSP 881: 1913-28 (yearly summaries only).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

5.5

8.0

12

16

20

25

30

35

1,240

2,420

4,810

7,620

11,200

16,500

22,900

30,600

40,600

54,600

72,000

92,500

116,000

141,000

176,000

8.0

12

16

20

25

30

2,040

4,430

7,170

10,700

15,600

21,900

35

40

45

50

55

29,600

39,300

51,600

70,600

92,500

Discharge, in-cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,350

1,260 

1,306

1,430 

1,500

1,590

1,700

1,450

1,260

1,460

1,800

1,700

1,640

1,630

1,590

1,560

*1,450

1,450

1,590

1,670

1,670

1,680

1,370 

,440

,680

,740 

,800

,820

,760

,540

,610

48,490

1,564

96,180

Nov.

1,800

1,910 

1,870

1,800 

1,510

1,340

1,460

1,800

1,760

1,760

1,760

1,550

1,460

1,750

1,920

1,920

2,200

2,450

2,410

2,430

4.700

3,330

2,360 

2,120

2,100

2,040

1,740

1,810

1,810

1,920

------

60,790

2,026

120, 600

Dec.

2,550

2,630 

2,200

1.980 

2,180

8,450

5,170

3,370

3,920

3,490

2,260

2,570

2,780

2,900

2,770

2,920

4,620

7,110

50,500

65,900

49,500

150,000

*17 2,000 

90,800

43,300

62,300 

49,600

31,200

20,400

16,700

14,500

880,570

28,410

*1,747

Jan.

13,500

12,000 

10.700

11,200 

*14,800

14,500

17,700

19,500

14,200

13,800

13,300

12,200

16,500

35,000

*59.500

49,100

31,500

24,300

19,900

19,300

19,000

19,000

22,500 

18,800

19,000

22,300 

20,500

16,700

14,800

*13,400

12,400

620,900

20,030

*1,232

Feb.

11,300

10,400 

9,690

9,320 

8,950

8,560

8,360

8,150

7,870

7,710

7,730

8,000

7,990

7,930

7,790

7,420

7,000

6,450

6.420

13,000

17,000

41,30O

45,900 

22,200

16,900

14,000 

12,600

11,500

11,100

--- ---

360,540

12,430

715,100

Mar.

10,400

10,600 

11,000

12,000 

12,000

11,200

10, 400

10. 100

10, 100

10,300

10,700

10,600

10,700

10,800

10,600

10,600

11,200

12,000

12,900

13,600

13,900

14,300

14,900 

15,700

16,700

17.500 

16,000

14,000

13,200

*13,300

13,400

384,700

12,410

763,000

Apr.

12,900

11,800 

11,000

10.400 

10,600

11,000

11,600

12,000

12,700

13,600

13,600

12,900

12,200

11,800

11,900

11,700

12,000

11,900

12,600

13,700

14,700

15,300

16,300 

16,500

16,300

16.900 

15, 400

14,000

13,300

13,000

393,600

13,120

780,700

May

13,100

13,200 

13,400

25.200 

21,000

18,900

17 , 500

16,100

14,900

14, 400

14,700

13,500

12,400

11,900

11, 800

12,400

13,200

13,600

13,500

14,200

14,700

15,100

15,400 

14, 600

13,800

13,200 

12,900

11,700

11,500

11,600

11,700

442,900

14,290

878,500

June

11,300

11,400 

11,400

11,300 

*10,200

9,340

8,750

8,060

7,620

7,300

7,200

6,860

6,580

6,500

6,640

6,810

6,460

6,460

6,460

6,260

6,000

6,060

6,020 

5,730

5,250

4,860 

4,410

4,440

4,450

4,550

------

214,670

7,156

425,800

July

4,180

4.320 

4.210

3,850 

3,730

3,630

3,600

3,550

3,400

3,190

3,020

2,950

2,910

2,880

2,860

2,920

3,030

2,990

2,880

2,720

2.490

2.56O

2,880 

3,180

3,170

3,150

3,150

3,150

3,130

3,090

3,070

99,840

3,221

198,000

Aug.

3.060

3,020 

*3,040

3,030 

3,030

3,020

2,860

2,860

2,880

2,880

2,880

2,820

2,800 27sfo

2,880

2,800

2,860

2,880

2,860

2,830

2-, 830

2,850

2,850 

2,860

2,850

2,830 

2,830

2,850

2,860

2,880

2,850

89,490

2,887

177,500

Sept.

2,850

2,850 

2,830

2,820 

2,820

2,810

2,820

2,820

2,800

2,820

2,860

2,850

2,850

2,840

2,840

2,760

g,750

2,790

2,970

3,040

2,960

2,860

2,820 

2,790

2,800

2,800 

2,800

*2,800

2,800

2,760

------

84,960

2,832

168,500

Calendar year 1955: Max 172,000 Mln 1,260 Mean 5,011 Ao-ft 3,628,000

Water year 1955-56: Max 172,000 Mln 1,260 Mean 10,060 Ac-ft 7,303,000

Peak discharge (base. 17.000 cfs).--Dec. 19 (lO p.m.) 95,000 cfs (55.56 ft); Dec. 23 (12:30 p.m.) 

203,000 cfs (76.77 ft); Dec. 26 (1 p.m.) 89,200 ofs (54.26 ft); Jan. 7 (9 p.m.) 28.400 cfs (34.26 

ft); Jan. 15 (6 p.m.) 77,500 cfs (51.66 ft); Jan. 26 (l p.m.) 24,900 cfs (32.12 ft); Feb. £2 

(10 p.m.) 71,700 ofs (50.28 ft); Mar. 26 (12 m.) 17,700 ofs (26.86 ft); Apr. 26 (5 a.m.) 17,300 cfs 

(26.49 ft); May 4 (2 p.m.) 25,400 cfs (32.46 ft).

* Discharge measurement made on this day. $ Expressed In thousands.
434 SACRAMENTO RIVER BASIN

South Honcut Creek near Bangor, Calif.

Location. Lat 39°22'05", long 121°22'15", in SEi sec. 35, T. 18 N., R. 5 E., on right

 bank 2.3 miles southeast of Bangor and 3.3 miles upstream from Tennessee Creek.

Drainage area. 30.5 sq mi.

Records available. October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 620 ft (from topographic map).

Average discharge.--6 years, 43.0 cfs (31,100 acre-ft per year).

Extremes.--Maximum discharge during year, 6,340 cfs Dec. 23 (gage height, 11.15 ft), from

 rating curve extended above 2,200 cfs on basis of slope-area determination of peak flow; 

no flow for many days.

1950-56: Maximum discharge, that of Dec. 23, 1955; no flow during several months 

each year.

Remarks.--Records good. Some small diversions upstream for irrigation. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

1.55

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.5

2.5

Oct

0

1,

2,

5,

4,

9.

. 1

.1

,2

,5

.7

.5

,1

,2

,6

,0

to Dec

2

5

5

4

4

5

5

6

7

7,

in 

. 25

.7

.0

.5

.0

.5

.0

.5

.0

.0 1

.5 1

15

50

68

125

211

527

485

700

,290

,750

Dec

1.55

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.4

0

1

2

5

8

25

.1

.2

.4

.8

.4

.3

.7

.0

to Sept.

2

5

5

4

4

5

6,

7

7

.6

.0

.5

.0

.5

.0

.0

.0

.5

50

15

56

77

155

226

556

750

1,290

1,750

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

.8

2.4

3.9

3.2

5.4

4.5

5.2 

5.7

12

~¥.8 

4.6

8.0

5.0

3.5

2.9

2.5

2.3

2.1

80.8

2.69

160

Dec.

7.3

10

5.7

5.5

14

868

69

32

53

22

15

13

10

8.2

*7.2

11

94

289

1.670 

533

474

1,260 

*1,440

354

150

*LJD50

275

138

96

80

107

9,158.9

295

18,170

Jan.

192

118

87

158

144

95

440

264

130

119

95

275- 78

1,180

1.690

442

217

150

125 

192

141

396 

*270

153

416

509

353

204

146

117

98

8,994

290

17,840

Feb.

82

70

63

58

52

47

44

40

36

35

34

32

30

29

27

25

24

24

39 

839

428

1.050 

498

192

211

160

134

112

99

4,494

155

8,910

Mar.

85

74

67

64

62

56

50

48

46

45

40

57

56

55

28

27

26

24

*24 

24

25

25 

22

20

19

20

18

18

16

15

IS

1,101

35.5

2,180

Apr.

14

14

14

14

15

12

12

11

11

11

20

22

16

15

14

15

11

10

9.8 

9.5

8.8

8.5

573

8.3

9.2

27

20

13

11

10

390.2

15.0

774

May

9.5

8.8

46

157

45

58

28

22

16

18

20

17

14

12

11

10

8.8

8.0

7.8 

7.2

7.0

6.5 

7.0

*8.5

8.5

7.5

7.0

6.8

6.5

E.5

5,8

559.1

18.0

1,110

June

5.8

575

5.4

4.8

4.8

4.6

4.4

4.0

5.7

5.5

3.2

5.0

2.9

2.9

5.0

2.9

2.6

2.5

2.6 

2.6

2.5

2.4

2.1

2.0

1.8

1.6

1.4

1.2

1.0

il

91.7

5.06

182

July

0.9

.9

1.0

T?

.8

.8

.6

.6

.4

.4

.4

.5

.5

.5

.5

.5

.2

.2

.2 

.2

.1

.1

.1

.1

.1

.1

.1

0~0

0

0

10.7

0.35

21

Aug.

0

ff

0

0

0

.2

14

^§

.1

.1

.1

.1

.1

0

.1

0

0

0

0 

0

0

0

0

0

0

0

0

0

0

0

0

3.5

0.11

6.5

Sept.

0

ff

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

.1

1.0

~7&- 1.4

.1.1

.1

0

0

0

0

0

5.6

0.12

7.1

Calendar year 1955: Max 1,670 Min 0 Mean 34.9 Ao-ft 25,300

Water year 1955-56: Max 1,690 Min 0 Mean 68.0 Ao-ft 49,360

Peak discharge (base, 800 cfs). Dec. 6

9.00 ft); Dec. 23

7 p.m.) 1,710 cfs

6.70 ft); Jan. 26

8 p.m.) 3,240 cfs

1 p.m. ) 6,

7.48 ft);

8:30 a.m.]

8.85 ft).

* Discharge measurement or o

340 cfs (11

Jan. 15 (11

1,070 cfs

bservation

(6 a.

.15 ft

a.m. }

(6.67

of no

m. ) 2,200

); Dec. 26

3.000 cfs

ft); Feb.

flow made

cfs (7.95 ft); Dec. 19 (4 p

(

20

on

LI a.m.) 5,380

3.65 ft); Van.

(9:30 p.m.) 1,

^

this day.

cfs (8.97

22 (7 p.m.

630 cfs (7

.».)

ft);

) 1,

.40

5,420 cfs

Jan

090

ft);

. 7

cfs

Feb. 22
SACRAMENTO RIVER BASIN 

Milton-Bowman tunnel at outlet, Calif.

435

Location.--Lat 39°28', long 120°37', in sec. 3, T. 18 N., R. 12 E., on right bank 100 ft 

downstream from tunnel outlet and near upper end of Bowman Lake.

Records available.--May 1928 to September 1930, October 1931 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 5,600 ft (from topographic map).

Average discharge. 27 years, 67.8 cfs (49,090 acre-ft per year).

Extremes. 1928-30; 1931-56: Maximum daily discharge, 492 cfs Feb. 11, 1941; minimum daily, 

0.4 cfs Oct. 7, 1944.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Tunnel diverts from Middle Yuba River at Milton, in sec. 12, T. 19 N., R. 12 E., and 

discharges into Bowman Lake. During low and medium stages practically entire flow of 

Middle Yuba River is diverted.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.1

2.1

2.1

2.1

1.9

2.2

2.5

3.0

3.0

3.5

3.9

4.1

3.9

3.7

3.7

3.5

3.5

3.5

3.5

3.7

3.9

3.9

3.7

3.7

3.7

4.3

4.6

TTJ

4.3

4.1

*4.1

106.1

3.42

210

Nov.

3.9

3.9

3.9

3.9

4.1

4.1

4.1

3.9

3.9

3.9.

3.7

577

.1

.6

.3

.6

.8

4.8

6.1

15.0

~55 35

14

11

9.1

8.4

7.8

7.5

7.2

7.2

225.5

7.52

447

Dec.

8.8

8.3

7.5

6.9

7.5

16

24

20

19

17

14

13

12

12

11

12

13

15

53

91

110

233

420 354"

384

388

388

323

251

209

190

3,661.0

118

7,260

Jan.

164

149

134

124

113

115

70

54

33

88

87

87

90

92

105

106

100

97

*96

96

96

97

100

96

96

94

92

94

97

98

100

3,110

100

6,170

Feb.

97

94

*92

92

92

90

87

84

79

76

74

71

71

71

71

69

65

68

65

65

53

49

^2

63

61

62

61

58

59

2,101

72.4

4,170

Mar.

58

58

54

55

56

56

54

49

50

52

52

52

52

49

49

49

50

48

55

55

60

63

67

69

75

83

85

87

88

aS

88

1,901

61.3

3,770

Apr.

88

88

88

88

88

88

88

88

90

90

91

92

92

91

91

90

90

88

92

8160

g227

a260

a280

a300

a320

a340

eSzQ

8300

g280

8270

4,758

159

9,440

May

8280

8350

8400

aI55

g384

a360

a350

8250

a90

a 100

*102

1OO

98

100

102

105

1O5

105

106

106

112

113

113

112

110

110

108

105

105

108

105

5,192

167

10,300

June

103

103

105

T53

100

98

98

100

100

102

100

100

*100

100

98

97

97

97

97

96

94

94

94

92

92

92

94

94

91

91

2,922

97.4

5,800

July

90

120

149

145

134

112

103

102

98

46

35

92

83

58

58

56

43

43

46

45

43

41

44

48

50

44

38

33

29

27

_24

2,074

66.9

4,110

Aug.

22

21

19

19

17

16

15

14

14

13

12

12

12

12

11

11

11

10

10

10

10

9.4

9.4

8.8

8.4

8.4

8.4

8.1

8.1

8.1

iiS.

375.9

12.1

739

Sept.

7.8

7.5

7.5

7.2

7.2

7.2

7.2

6.9

6.9

6.9

6.9

6.9

6.6

3.2

5.5

5.5

5.5

10

5.8

5.8

6.4

6.4

6.1

5.5

5.5

5.5

5.5

5.5

5.3

5.3

191.0

6.36

378

Calendar year 1955: Max 42O Min 1.9 Mean 61.6 Ac-ft 44,580

Water year 1955-56: Max 420 Min 1.9 Mean 72.7 Ac-ft 52,790

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of spill of Middle Yuba River below Milton 

Reservoir and records for North Yuba River below Goodyears Bar. 

g Computed from once-daily outside gage readings.
436 SACRAMENTO RIVER BASIN

Middle Yuba River at Milton, Calif.

Location. Lat 39°31'22", long 120 035'0l", in SW£ sec. 12, T. 19 N., R. 12 E., on right 

bank "at diversion dam of Nevada Irrigation District, at old townsite of Milton, 4 miles 

southeast of Sierra City and 8 miles upstream from South Fork of Middle Yuba River.

Drainage area. 39.5 sq mi.

Records available. --December 1925 to September 1934, October 1935 to September 1956. Prior 

to October 1949, published as "Middle Pork Yuba River."

e. Water -stage recorder and concrete spillway control. Altitude of gage is 5,700 ft 

from topographic map). December 1925 to September 1928 at site 0.2 mile downstream, 

at different datum.

Average discharge. --2 6 years. (1926-30, 1931-34, 1935-40, 1941-42, 1943-56), 110 cfs

(79,640 acre-ft per year), based on combined flow of Middle Yuba River at this station 

and Milton-Bowman tunnel at outlet.

Extremes.. --Maximum discharge during year, 6,680 cfs Dec. 23 (gage height, 4.15 ft), from 

rating curve extended above 1,500 cfs on basis of computation of peak flow over dam; no 

flow over dam for long periods .

1925-34, 1935-56: Maximum discharge, 6,800 cfs Dec. 11, 1937 (gage height, 4.18ft), 

from rating curve extended above 1,500 cfs on basis of computation of peak flow over 

dam; practically all low flow diverted after May 23, 1928.

Remarks . --Records good. Milton-Bowman tunnel 

Bowman Lake (see p. 442).

(see preceding page) diverts above station to

Cooperation. Water-stage recorder inspected by employees of Nevada Irrigation District. 

Revisions.. --WSP 1395: Drainage area.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

0.0 

.1 

.2 

.3 

.4 

.5

9

42

88

143

207

354

0.9 

1.2 

1.5 

2.0 

3.0 

4.0

535

870

1,270

2,040

3,940

6,300

Discharge, in oubio feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

63

327

416

3,610 

5,090 

733

128

165

26

0

0

0

0

10,558

341

20,940

Jan.

0

Tj

0

0

0

0

0

0

.1

7.0

.7

1.0

11

58

441

522

22T

143

110

94

73

99 

143 

88

73

26

30

54

68

46

26

2,334.8

75.3

4,630

Feb.

6.6

50

6.1

*2.2

.2

0

Tj

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0 

0

0

0

0

0

0

65.1

2.24

129

Mar.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

2.1 

16

38

38

22

22

38

 5T 54

284.1

9.16

564

Apr.

34

19

13

13

30

50

73

94

126

145

99

73

50

42

34

50

50

6S

31

0

0

0 

35 

92

43

.1

0

0

0

0

1,262.1

42.1

2,503

May

0

Tj

76

380

132

104

17

*96

*256

221

181

162

18 B

270

397

459

506

588

762

896

1,050

1,120 

948 

810

810

774

651

651

717

706

640

14,568

470

28,900

June

651

750

6^9

459

423

450

488

506

526

478

440

414

371

316

285

292

330

316

256

235

256

256 

228 

194

207

235

221

175

138

9!

10,604

353

21,030

July

-T5 43

75

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0 

0

0

0

0

0

0

0

43

1.39

85

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 5,090 Min 0 Mean 42.9 Ac-ft 30,220

Water year 1955-56: Max 5,090 Min o Mean 108 Ac-ft 78,790

* Discharge measurement or observation of no flow made on this day.
SACRAMENTO RIVER BASIN 437

Middle Yuba River above Oregon Creek, Calif.

Location. Lat 39°23'35", long 121°04'50", in SE£ sec. 28, T. 18 N., R. 8 E., on left bank 

1,000 ft upstream from Oregon Creek and 2 miles northeast of North San Juan.

Drainage area. 162 sq mi.

Records available. March 1941 to September 1956. Prior to October 1949, published as 

"Middle Fork Yuba River." If record for Oregon Creek near North San Juan is subtracted 

from record published as Middle Pork Yuba River near North San Juan, a record equivalent 

to that at this site can be obtained for the period 1910-41.

Gage.--Water-stage recorder. Altitude of gage is 1,440 ft (from topographic map). 

Average discharge.--15 years, 374 cfs (270,800 acre-ft per year).

Extremes. Maximum discharge during year, 26,400 cfs Dec. 22 (gage height, 17.25 ft); from 

rating curve extended above 8,200 cfs on basis of slope-area determination at gage 

height 15.25 ft; minimum, 30 cfs Oct. 2-9.

1941-56: Maximum discharge, that of Dec. 22, 1955; minimum, 10 cfs Jan. 3, 1950.

Remarks. Records good except those for periods of doubtful or no gage-height record, 

which are fair. Milton-Bowman tunnel (see p. 435 ), above station, has diverted to 

Bowman Lake since 1928; also other small diversions above atation.

Revisions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56(gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Oct. 1 to Dec. 6)

Oct. 1 to Jan. 15

1.9 

2.3 

2.7 

3.1 

3.5 

4.0 

5.0

57

101

165

250

395

830

6.0 

7.0 

8.0 

10.0 

12.0 

 14.0 

16.0

1,380

2,190

3,360

6,420

10,700

15,900

21,900

2.4 

2.7 

3.3 

4.0 

5.0

Jan. 16 to Sept. 30 

37 6.0 

7.0

162

315

680

1,320

2,190

3,360

5,560

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

2O

21

22

23 

24

25

26

27

28

29

3O

31

Total

Mean

Ac-ft

Oct.

31

30

30

30

30

30

30

30

30

38

39

35

33

33

32

32

32

32

32

32

33

33

33 

32

32

40

40

35

35

34

34

1,022

33.0

2,030

Nov.

33

34

34

34

35

36

35

33

33

33

33

33

42

51

42

48

55

60

85

138

265 ~93

72 

65

58

55

56

59

59

57

1,766

58.9

3,500

Dec.

210

126

88

73

*9l?

*880

388

220

300

232

181

165

152

141

134

160

402

593

3,720

4,620

*3,780

18,900

19,200 

S, 410

2,90O

4,230

*3,020

1,760

1,330

1,080

930

76,417

2,465

151,600

Jan.

905

820

726

830

1,450

1,070

1,040

995

935

970

930

880

1,210

2.8QO

5,450

*4,420

2,500

1,700

1,370

1,180

1,210

1,380

1,800 

1,400

1,500

*1,900

1,650

1,240

1,050

906

822

47,039

1,517

93,300

Feb.

750

720

690

653

617

582

554

526

500

482

468

461

450

436

422

402

402

393

390

534

*658

1,160

1,_580 

864

720

630

570

542

530

17,686

610

35,080

Mar.

506

514

534

554

558

514

486

475

475

478

475

461

454

454

444

447

468

492

514

510

518

534

558 

608

658

695

635

590

590

*622

640

16,461

531

32,650

Apr.

578

514

475

458

472

496

550

578

622

705

662

594

526

489

450

447

454

468

510

468

518

542

604 

*676

715

775

622

550

503

496

16,517

551

32,760

May

503

526

604

1,620

1,200

1,110

1,020

858

780

1,000

1,060

918

798

745

780

954

1,140

1,190

1,230

1,480

1,690

1,890

*2,OQO 

1,800

1,560

1,460

1,470

1,250

1,220

1,230

1,270

36,356

1,173

72,110

June

1,160

1,100

1,200

1,180

882

770

760

798

840

858

822

745

710

*685

599

546

506

518

570

500

444

436

447 

440

393

372

387

387

357

312

19,724

657

39,120

July

272

245

194

164

155

150

145

140

135

130

125

120

115

110

110

105

100

96

94

90

88

86

82 

80

78-

76

74

72

70

*66

J35

3,632

117

7,20O

Aug.

64

62

62

60

60

58

56

56

54

52

51

51

51

50

50

49

49

48

48

47

46

4645' 

44

44

44

44

43

44

43

43

1,564

50.5

3,100

Sept.

42

42

42

41

42

42

42

41

42

42

42

42

43

43

43

43

44

48

60

6.6

60

55

50 

43

*42

41

41

41

43

44

1,352

45.1

2,680

Calendar year 1955: Max 19,200 Mln 28 Mean 368 Ac-ft 266,300

Water year 1955-56: Max 19,200 Mln 30 Mean 654 Ac-ft 475,100

Peak discharge (base, 1,800 cfs). Dec. 19 (6 p.m.) 5,940 cfs (9.73 ft); Dec. 22 (9 a.m.) 26,400

cfs (17.25 . ft;; Dec. . 26 (5 p.m.; .. 6,030 , cfs (9.78 . ft); Jan. . 15 (6 p.m.) .. 8,40O , cfs (10.98 . ft); Feb. . 22

(12 p.m.) 2,500 cfs (7.29 ft); May 4 (12 m. ) 1,880 cfs (6.67 ft); May 23 (1 a.m.) 2,480 cfs (7.27 ft).

* Discharge measurement made on this day.

Note.--Doubtful or no gage-height record Jan. 22-26, July 6 to Aug. 9, Sept. 13-24; discharge estimated on basis of records for Oregon Creek near North San Juan.

493801 O - 59 - Z9
438 SACRAMENTO RIVER BASIN

Oregon Creek near North San Juan, Calif,

Location. Lat 39°24'10", long 121°04'35", in NW^NW^ sec. 27, T. 18 N., R. 8 E., on right 

bank 0.7 mile upstream from mouth and 2.7 miles northeast of North San Juan.

Drainage area. 34.4 sq mi.

Records available . October 1910 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,580 ft (from topographic map). Prior 

to October 1933, staff gages at site 0.6 mile downstream at different datums.

Average discharge. 45 years (1911-56), 76.6 cfs (55,460 acre-ft per year).

Extremes. Maximum discharge during year, 5,390 cfs Dec. 22 (gage height, 11.90 ft), from 

rating curve extended above 2,000 cfs; minimum, 2.0 cfs Oct. 7.

1910-56: Maximum discharge recorded, that of Dec. 22, 1955; minimum, 0.7 cfs 

several days in July, August 1931, September 1934.

Remarks. Records good except those for periods of doubtful or no gage-height record, which 

are fair. Small diversions above station for irrigation and mining.

Revisions (water years). WSP 1395: 1914, 1927-28, drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Feb. 22 Feb. 23 to Sept. 30

1.54

1.6

1.7

1.8 

2.1 

2.5 

3.0

2.0 

3.4

6.1

9.2

20

37

68

3.5 

4.0 

5.0 

6.0 

7.0 

9.0 

11.0

115

178

380

710

1,220

2,590

4,400

1.6

1.7 

1.9 

2.2 

2.5

4.0

6.5

13

26

42

3.0 

3.5 

4.5 

5.5

81

130

294

530

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Ac-ft

Oct.

2.4

2.4

2.4

272" 2.2

2.2

2.2

2.2

2.2

4.4

6.1

4.9

4.4

3.9

3.9

3.6

3.6

3.6

3.9

3.9

3.9

3.9

3.9

3.9

3.6

5.8

6.4

Nov.

4.2

4,2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

5.9

3.9

3.9

4.9

8.2

7.0

7.3

10

14

20

31

70

25

18

17

16

15

16

5.2' 16

4.6

4.2

4.2

116.2

3.75

230

15

15

374.9

12.5

744

Dec.

60

40

25

20

»26

428

117

63

131

78

53

45

40

36

33

55

182

259

1,210

*1,100

859

5.450

3,380

1,600

726

1,100

808

*530

395

306

250

17,405

561

34,520

Jan.

237

212

181

237

522

355

340

342

286

340

323

290

472

1,350

2 . 080

1,360

702

515

416

419

440

532

678

518

562

*702

582

455

375

315

272

16,410

529

32,550

Feb.

233

202

180

165

153

140

131

122

114

106

101

98

95

91

86

80

80

78

79

113

*132

292

255" 467

238

195

175

165

161

4,560

157

9,040

Mar.

152

152

154

163

172

154

141

138

138

139

137

132

128

127

124

124

131

140

148

151

151

153

158

162

169

176

T66

153

*146

140

146

4,565

147

9,050

Apr.

137

125

115

107

103

100

100

101

103

111

117

111

100

95

90

86

84

79

78

12

89

91

92

*91

99

151

T53

109

100

92

_ -----

3,063

102

6,080

May

87

85

102

246

199

175

178

165

153

148

184

174

154

138

125

114

106

98

91

85

78

*74

*68

*65

59

56

52

48

46

44

42

3,439

111

6,820

June

40

35

37

36

34

34

32

31

29

28

27

25

24

*24

26

24

25

22

22

22

21

20

19

18

19

17

17

17

16

16

___-_-

759

25.3

1,510

July

16

T5

15

14

14

14

13

13

13

12

12

12

11

11

11

11

10

10

10

10

9.5

9.5

9.0

9.0

8.5

8.5

8.5

8.0

8.0

8.0

7.5

341.0

11.0

676

Aug.

7.5

7.0

7.0

7.0

7.0

7.0

6.5

6.5

6.0

6.2

6.0

5.8

5.8

5.8

6.0

6.0

5.8

5.8

5.8

5.5

5.0

s!2

5.2

5.0

5.0

5.2

5.2

5.0

5.0

184.0

5.94

365

Sept.

5.0

4.8

4.5

4.2

4.2

4.5

4.8

4.8

4.8

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4.8

5.2

 975 9.5

8.8

6.5

6.2

6.0

5.8

*5.5

5.5

5.5

5.5

5.5

166j4

5.55

330

Calendar year 1955: Max 3,450 Mln 2.0 Mean 81.4 Ac-ft 58,890

Water year 1955-56: Max 3,450 Mln 2.2 Mean 14O Ac-ft 101,900

Peak discharge (base, 410 cfs). Dec. 6 ( 9 a.m.) 722 cfs (6.03 ft): Dec. 19 (4 p.m.) 1.71O cfs

(7.80 ft); Dec. 22 (7 a.m.) 5,390 cfs (11.90 ft); Dec. 26 (5 p.m.) 1,610 cfs (7.65 ft); Jan. 5

(7 a.m.) 600 cfs (5.70 ft); Jan. 7 (8:30 p.m.) 440 cfs (5.20 ft); Jan. 15 (4 p.m.) 2,990 cfs (9.50 

ft); Jan. 23 (3 a.m.) 804 cfs (6.22 ft); Jan. 26 (11 a.m.) 808 cfs (6.23 ft); Feb. 22 (12 p.m.) 718

ffa t& . n? fM .

* Discharge measurement made on this day.

Note. Doubtful or no gage-height record Nov. 18 to Dec. 4, June 24 to Aug. 8; discharge estimated 

on basis of a normal recession and records for Middle Yuba River above Oregon Creek and North Yuba 

River below Goodyears Bar.
SACRAMENTO RIVER BASIN 439

North Yuba River below Goodyears Bar, Calif.

Location. Lat 39"32', long 120°56', in SW£ sec. 11, T. 19 N., R. 9 E., on right bank 

3.5 miles downstream from Goodyears Creek, 4 miles southwest of Goodyears Bar, and 

6 miles southwest of Downieville.

Drainage area. B45 sq mi.

Records available. December 1930 to November 1937, December 1938 to September 1956. 

Prior to October 1949, published as North Fork Yuba River below Goodyears Bar.

Gage. Water-stage recorder. Altitude of gage is 2,450 ft (from topographic map). 

Average discharge. 23 years (1931-37, 1939-56), 753 cfs (545,100 acre-ft per year).

Extremes.--Maximum discharge during year, 26,800 cfs Dec. 23 (gage height, 19.30 ft), 

from rating curve extended above 4,300 cfs on basis of one float measurement at gage 

height 16.0 ft and slope-area determination at gage height 19.15 ft; minimum, 112 cfs 

Oct. 7.

1930-56; Maximum discharge, that of Dec. 23, 1955; minimum, 69 cfs Aug. 26, 1931.

Remarks. Records excellent except those for periods of no gage-height record, which are 

fair. Several small diversions above station for irrigation and mining.

Revisions (water years) . WSP 1041: 1944. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 19 Dec. 19 to Sept. 30

1.5 

2.0 

2.5 

3.0 

4.0

112

159

219

304

584

5.0 

6.0 

7.0 

9.0 

11.0

1,030

1,650

2,420

4,550

7,360

E.I 

2.5 

3.0 

4.0 

5.0 

6.0

170

224

316

590

1,000

1,540

7.0

9.0

11.0

14.0

18.0

2,280

4,400

7,270

13,100

23,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

116

115

115

tit

115

114

114

114

128

133

T23

119

118

116

115

115

*115

116

118

118

119

116 

115

115

132

132

122

120

119

3,675

119

7,290

Nov.

118

118

116

116 

119

123

118

116

115

114

114

114

128

133

127

137

144

141

214

359

2T9~ 584

184 

157

157

156

164

172

171

155

4,934

164

9,790

Dec.

345

234

192

170 

195

*841

524

330

451

341

291

289

271

257

250

347

588

928

5,370

6,710

*6,200

18,500

21,100 

8,980

4,540

6,000

*4, 640

3,020

2,400

1,950

1,700

98,964

3,192

196,300

Jan.

1,560

1,450

1,340

1.290 

1,700

1,560

1,520

1,600

1,430

1,460

1,470

1,400

1,630

3,210

6.280

5,630

3,300

2,560

2,160

2,000

2,000

2,000

2,600 

2,200

2,300

2,900

2,530

2,080

1,780

1,580

1,440

67,960

2,192

134,800

Feb.

1,310

1,220

1,160

1,110 

1,060

1,020

968

932

896

860

838

829

816

804

784

740

736

728

'538" 716

1,030

*1,490

2.260 

1,520

1,230

1,080

960

888

888

-

29,711

1,025

58,930

Mar.

852

870

878

892 

937

852

796

772

772

780

776

752

736

732

720

724

764

820

883

901

924

964

1,040 

1,140

1,260

1.370

1,260

1,170

*1,160

1,220

1,240

28,957

934

57,440

Apr.

1,160

1,060

991

950

We

1,040

1,140

1,200

1,280

1,450

1,350

1,250

1,140

1,080

1,020

1,000

1,060

1,090

1,200

1,420

1,640

1,740

*1,980 

2.100

2,080

2,060

1,750

1,550

1,450

1,490

40,707

1,357

80, 740

May

1,590

1,750

1,930

3,400 

2,660

2,580

2,440

2,180

2,040

1,920

1,920

1,750

1,620

1.560

1,630

1-, 910

2,200

2,300

2,530

2,990

3,310

3,710

*5.880 

3,610

3,330

3,180

3,070

2,960

2,690

2,740

2 , 690

78,070

2,518

154,800

June

2,540

2,510

2.680.

2,550 

2,160

1,980

1,920

1,950

2,010

2,060

2,070

1,930

1,840

*1,780

1,660

1,550

1,460

1,480

1,540

1,450

1,350

1,310

1,310 

1,300

1,220

1,180

1,190

1,180

1,150

1.060

51,370

1,712

101,900

July

973

896

824

772 

736

700

662

648

633

604

580

556

537

515

494

479

461

439

420

410

400

387

389 

387

367

356

345

329

316

310

*500

16,225

523

32,180

Aug.

292

2B$

286

282 

276

274

267

262

256

249

245

242

238

237

234

230

229

224

222

221

220

215

210 

209

206

205

205

203

202

199

196

7,324

236

14, 530

Sept.

192

191

188

187 

190

190

190

190

190

190

190

190

200

200

200

200

200

200

290

290

270

210

190 

180

*180

TTO" 170

170

170

170

5,938

198

11,780

Calendar year 1955: Max 21,100 Min 114 Mean 568 Ac-ft 483,400

Water 'ater year year 1955-55: 1955-56: Max Max 21,100 21,100 Min Min 114 114 Mean Mean 1,185 1,185 Ac-ft Ac-ft 860,500 860,500

Peak discharge (base. 5.200 cfs).--Dee. 19 (4 p.m.) 9,630 cfs (12.35 ft); Dec. 23 (l p.m.) 26,800 

jfs (19.30 ft); Dec. 26 (5 p.m.) 8,310 cfs (11.61 ft); Jan. 15 (7 p.m.) 9,490 cfs (12.27 ft); May 4 

(9 a.m.) 3,650 cfs (8.36 ft); May 22 (9 p.m.) 4,700 cfs (9.25 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 20-26, Sept. 5-30; discharge estimated on basis of 1 discharge 

measurement and records for Oregon Creek near North San Juan.
440 SACRAMENTO RIVER BASIN

North Yuba River below Bullards Bar Dam, Calif.

Location. Lat 39°24'15", long 121°08'30", in SW^ sec. 24, T. 18 N. , R. 7 E., on right 

bank 2,000 ft downstream from Bullards Bar Dam, 3 miles upstream from confluence with 

Middle Yuba River, and 3 miles northwest of North San Juan.

Drainage area. 482 sq mi.

Records available. December 1940 to September 1956. Prior to October 1949, published as 

North Fork Yuba River at Colgate diversion dam and October 1949 to September 1950 as 

North Yuba River at Colgate diversion dam.

Gage. age Water-stage recorder.

Oct. 1, 1950, at

rder. Altitude of gage is 1,390 ft (from topographic map). 

site 1 mile downstream at different datum.

Average discharge. 15 years (1941-56), 1,554 cfs (1,125,000 acre-ft per year).

Extremes . Maximum discharge during year, 70,000 cfs Dec. 23 (gage height, 39.0 ft, from 

floodmark), from rating curve extended above 32,000 cfs on basis of computation of flow 

over dam at gage height 29.5 ft; minimum, 35 cfs Nov. 20.

1940-56: Maximum discharge, that of Dec. 23, 1955; no flow Dec. 22, 23, 1949.

Remarks. --Records fair. Flow usually completely regulated below 650 cfs by Bullards Bar 

powerhouse, otherwise slightly regulated by Bullards Bar Reservoir. No large diversion 

above station.

Revisions. --WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height. In feet, and discharge, in cubic

feet per second) 

(Stage-discharge relation indefinite July 12-36)

Oct. 1 to Jan. 20 Jan. 21 to Aug. 9 Aug. 10 to Sept. 30

4.0 

4.5 

5.0 

6.0

a.o

138

258

455

1,010

2,480

12.0

18.0

26.0

35.0

6,560

15,700

33,400

57,500

2.2 

3.0 

4.5 

7.0

790

1,780

4,300

10,200

5.1 

5.5 

6.1

230

330

570

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16 

17

18

19 

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

156

158

156

156 

156

156

156

156

154

156

196

220

TM

166

160

158 

154

152

*T52 

154

154

154

175

175

156

191 

212

206

158

154

158

5,154

166

10,220

Nov.

162

162

162

164 

164

164

166

166

166

166

162

160

T5T

194

217

223 

228

234

265

303

464

540" 540

535

525

491 

478

455

442

419

8,683

289

17,220

Dec.

428

436

456

452 

445

*485

539

561

625

903

785

712

679

640

599

719 

1,490

2,100

19,400 

17,700

14,500

50,000

57,000

21,200

10,400

15,100 

11,400

7,560

5,530

4,720

4,100

251,664

8,118

499,200

Jan.

3,730

3,370

3,100

2,850 

3,950

3,270

3,140

3,880

3,210

3,280

3,400

3,080

4,050

10,200

17.400

13,600 

8,540

6,150

5,000 

*4,920

5,600

5,400

7,950

5,980

5,600

7,280 

*6,700

5,220

4,420

3,840

3,390

171,500

5,532

340,200

Feb.

3,070

2,790

2,580

2,420 

2,320

2,200

2,120

2,030

1,990

1,880

1,820

1,770

1,780

1,740

1,650

1,600 

1,520

1,510

1,440 

1,710

2,500

5,050

*7,S20

4,220

3,250

2,720 

2,440

2,300

2,280

72,520

2,501

143,800

Mar.

2,160

2,130

2,160

2,240 

2,320

2,190

2,000

1,920

1,860

1,860

1,890

1,790

1,700

1,680

1,710

1.640 

1,670

1,810

2,000 

2,140

2,160

2,170

2,340

2,550

2,870

3,200 

2,930

2,720

*2,660

2,720

2,840

68,030

2,195

134,900

Apr.

2,610

2,380

2,200

2,100 

2,140

2,240

2,380

2,530

2,680

3,030

2,820

2,630

2,320

2,160

2,060

2.050 

2,140

2,220

2,480 

2,920

3,340

3,500

3,820

4,020

*3,940

4.140 

3, $90

3,160

2,920

2,930

83,430

2,781

165,500

May

3,070

3,320

3,340

6.620 

5,620

5,040

4,720

4,220

3,860

3,610

3,800

3,450

3,160

2,960

3,000

3,450 

3,900

4,000

4,020 

4,560

5,060

5,420

5,800

*4,820

5,000

4,720 

4,660

4,100

3,920

3,780

3,960

130,960

4,225

259,800

June

3,570

3,450

3,570

5.680 

3,606

2,760

2,720

2,710

2,760

2,800

2,820

2,610

2,500

2,420

*2,260

2,130 

1,990

2,000

2,100 

1,960

1,820

1,780

1,780

1,750

1,640

1,550 

1,600

1,560

1,510

1,450

70,230

2,341

139,300

July

1.290

1,180

1,090

1,010 

966

944

889

845

845

834

790

734

731

682

685

633 

633

598

580 

566

535

514

514

514

490

484 

483

483

484

486 

483

21,995

710

43,630

Aug.

480

*478

406

328 

333

347

347

412

471

555

535

535

530

518

521

535 

535

530

530 

525

525

515

485

458

410

371 

327

282

3T2

309 

309

13,734

443

27,240

Sept.

306

303

300

292 

292

284

292

292

292

292

292

292

292

292

292

292 

254

231

2BT 

300

336

318

285

399

422

*369 

298

290

285

272

9,010

300

17,870

Calendar year 1955: Max 57,000 Mln 147 Mean 1,465 Ac-ft 1,061,000

Water year 1955-56: Max 57,000 Mln 152 Mean 2,478 Ac-ft 1,799,000

* Discharge measurement made on this day.

Note. No gage-height record Dec. 2 to Jan. 20, July 31 to Aug. 9, Sept. 17-20; discharge estimated on basis of flow over or through Bullards Bar Dam, powerhouse records, and records for station 

below Ooodyears Bar. Stage-discharge relation indefinite July 12-30j discharge estimated on basis 

of records for Bullards Bar powerhouse.
SACRAMENTO RIVER BASIN

South Yuba River near Cisco, Calif.

Location. Lat 39°19', long 120°33', in sec. 19, T. 17 N. , R. 13 E. , on right bank 0.5 mile 

downstream from Rattlesnake Creek, 1 mile west of Cisco Grove, and 1.2 miles northwest 

of Cisco.

Drainage area.--51.5 sq mi.

Records available.--April 1942 to September 1956. 

South Fork Yuba River near Cisco.

Prior to October 1949, published as

Gage.--Water-stage recorder. Altitude of gage is 5,500 ft (from topographic map). Prior 

to October 1945, at site 200 ft upstream at same datum.

Average discharge. 14 years, 199 cfs (144,100 acre-ft per year).

Extremes.--Maximum discharge during year, 10,200 cfs Dec. 23 (gage height, 14.84 ft); minimum, 3.3 cfs Nov. 16.

1942-56: Maximum discharge, 11,700 cfs Nov. 20, 1950 {gage height, 15.82 ft), from 

rating curve extended above 4,600 cfs on basis of slope-area determination of peak flow; 

minimum daily, 0.1 cfs Nov. 5, 6, 7, 1954.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Low flow regulated by Lake Van Norden (capacity, 4,320 acre-ft).

Revisions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to May 3 May 4 to Sept. 30

1.7

1.8

1.9

2.1

2.3

2.5

2.8

3.1

2.3

4.6

7.6

16

30

47

83

128

3.5

4.0

5.0

6.0

7.0

9.0

11.0

13.0

212

370

720

1,120

1,630

3,100

5,120

7,600

2.9

3.1

3.5

4.0

5.0

7.0

9.0

11.0

14.0

98

135

235

385

760

1,810

3,300

5,200

8,950

2.2

2.5

3.0

3.5

4.0

5.0

7.0

24

48

109

210

350

710

1,810

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

27

26

26

26

26

25

25

25

25

27

25

24

23

23

22

22

22

22

23

23

a22

a22

a22 

a21

a20

22

20

19

18

17

16.

706

22.8

1,400

Nov.

*22

21

17

14

12

9.9

9.1

7.0

6.7

6.1

4.9

3.8

T3

5.5

3.8

3.8

4.3

4.0

5.2

25

42

T7

8.3 

6.7

4.9

5.2

5.5

6.7

7.3

7.0

300.0

10.0

595

Dec.

9.1

8.0

7.3

6.4

6.7

97

56

34

54

33

29

32

29

28

28

34

44

43

565

982

1,240

6,370

7,790 

1,400"

846

*856

520

385

307

259

232

22,330.5

720

44,290

Jan.

208

189

171

160

166

171

155

147

137

141

143

153

235

415

1,560

*1,330

636

412

334

307

280

367

409

271

286

229

211

200

178

169

160

9,930

320

19,700

Feb.

151

149

149

149

147

139

135

135

131

131

131

135

137

135

131

169

TT9

119

112

112

125

117

115 

113

108

108

103

103

101

3,709

128

7,360

Mar.

101

105

106

105

101

100 TOT

100

101

103

106

129

100

106

101

113

119

143

155

149

*173

211

271 

340

385

364

265

256

331

376

346

5,562

179

11,030

Apr.

244

192

171

T§9

271

349

426

450

544

576

358

271

220

186

173

223

a290

a370

a480

a580

a680

a800

a920 

"B2S 990

596

632

382

415

568

13,369

446

26,520

May

740

810

958

1,320

791

710

540

438

473

407

368

311

305

*374

590

875

970

1,010

1,110

1,490

1,610

1,760

1,770 

1,450

1,410

,370

,290

,120

,130

,240

,160

29,900

965

59,310

June

1,080

1,140

1,280

1,050

764

759

860

945

980

995

930

840

*791

666

529

501

598

718

658

526

540

570

578 

547

484

526

536

501

404

508

21,604

720

42,850

July

284

245

215

198

179

162

152

148

137

121

105

94

80

58

58

55

53

48

44

39

34

33

43 

37

34

30

43" 28

49

48

*55

2,909

93.8

5,770

Aug.

84

82

81

81

80

77

75

74

71

70

74

73

69

69

67

64

56

48

46

45

44

41

40 

38

37

35

34

33

32

3?

50

1,803

58.2

3,580

Sept.

49

48

46

46

46

45

45

44

44

44

44

33

30

30

27

25

25

25

29

28

38

39

39 

39

39

39

*39

38

38

37

_ --__ -

1,138

37.9

2,260

Calendar year 1955: Max 7,790 Min 3.8 Mean 189 Ac-ft 136,500

Water year 1955-56: Max 7,790 Min 3.8 Mean 309 Ac-ft 224,700

Peak discharge (base, 1,500 efs).--Dee. 23 (7 a.m.) 10,200 cfs (14.84 ft); Jan. 15 (7 p.m.) 2,830 

cfs (8.41 ft); May 4 (1 a.m.) 1,670 cfs (6.77 ft); May 22 (8 p.m.) 2,560 cfs (8.08 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Middle Pork American River at 

French Meadows.
442 SACRAMENTO RIVER BASIN

Bowman Lake near Graniteville, Calif.

Location. Lat 39°27', long 120°39', in SW£ sec. 5, T. 18 N., R. 12 E., on rock-fill 

portion of Bowman Dam on Canyon Creek, 4 miles east of Graniteville and 8 miles south 

of Sierra City.

Drainage area. 29.4 sq mi.

Records available.--December 1926 to September 1956.

Gage.--Staff gage read at various times. Datum of gage is at mean sea level, corrected 

(levels by Nevada Irrigation District).

Extremes. Maximum contents observed during year, 70,400 acre-ft May 23, June 17-20, 23-30 

(elevation. 5,565.7 ft); minimum observed, 9,920 acre-ft Nov. 26, Dec. 6 (elevation, 

5,469.3 ft).

1926-56: Maximum contents observed, 70,500 acre-ft for one or more days in 1937, 

1943, 1950-51, 1953-54 (elevation, 5,565.9 ft); no contents Nov. 25 to Dec. 9, 1949.

Remarks.--Lake is formed by 1 rock-fill and 1 concrete-arch dam; completed and storage 

began in November 1926. Capacity, 68,200 acre-ft between elevations 5,400 ft (bottom 

of outlet tunnel) and 5,563 ft (crest of concrete-arch dam) above mean sea level. 

Flashboards are occasionally added, increasing elevation to 5,564.5 ft and capacity to 

69,400 acre-ft. Lake receives water from Middle Yuba River through Milton-Bowman 

tunnel (see p. 435), and releases it through Bowman-Spaulding Canal (see following 

page) which conveys it to reservoirs of Pacific Gas & Electric Co. Water is eventually 

used for Irrigation by Nevada Irrigation District. Record shows total contents, all 

of which are available for release.

Cooperation.--Record of gage heights furnished by Nevada Irrigation District. 

Revisions. WSP 1395: Drainage area.

Capacity table, water year 1955-56 (elevation, in feet, 

and contents, in acre-feet)

5,460.0

5,480.0

5,510.0

5,540.0

5,570.0

6,900

14,200

30,000

49,800

73,800

Contents, in acre-feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

31.500 

31,100

30,700

30,500

30,200

29,900

29,500

29,300

28,900

28,600

28,300

27,800

27,400

26,900

26,500

26,000

'25,600

25,100

24,600

24,100

23,600

23,200

22,700

22,300

21,900

21,500

21,000

20,600

20,200

19,900

19,500

5,491.2

-12,100

Nov.

19.000 

18,600

18,200

17,800

17,300

16,800

16,300

16,000

15,400

15,000

14,700

14,300

13 , 900

13,500

13,000

12,600

12,200

11,800

11,400

11,100

11,100

10,700

10 , 500

10,200

10,100

9.920

10,200

10,100

10,200

10,900

5,471.7

-8,600

Dec.

10,700 

10,600

10,400

10,200

10,100

9.920

10,200

10,100

10,400

10,400

10,300

10,800

11,000

11,100

11,100

11,200

11,200

11,200

12,000

13,400

14,600

24,600

34,200

40,000

41,400

43,500

44 , 900

45 , 900

46,500

48.900

48,300

5,537.8

+37,400

Jan.

48.900 

49,400

49,800

50,200

50,700

51,100

51,400

51,600

51,800

52,200

53,000

53,600

54,000

54,700

55,400

57,000

58,000

58,500

59,100

59,600

60,100

60,600

61,300

61,800

62,400

63,000

63,400

63,800

64,000

64.200

64,100

5,557.9

+15,800

Feb.

64.400 

64,400

64,300

64,300

64,300

64,400

64,400

64,300

64,300

64,000

65.800

64,000

64 , 000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,000

5,557.7

-100

Mar.

64.000 

64,000

64,000

64,000

64,000

64,000

64,000

64,000

64,OOO

64,000

64,000

63,400

62,800

62,400

61,800

61,300

60,700

60,100

59,600

59,000

58,400

57,900

57,300

56,800

56,300

55,800

55,500

55,200

54,800

54 400

54.100

5,545.4

-9,900

Apr.

53,800 

53,600

55.400

53,800

54,400

55,200

56,000

56,800

57,600

58,400

58,900

59,200

59,300

59,500

59,600

59,600

59,600

59,800

59,900

60,600

61,500

62,400

63,500

64,900

65,800

67,000

68,100

68,700

69,000

69.500

5,564.6

+15,400

May

70,300 

69,900

69,200

69,400

69,600

69,500

69,200

69,400

68,800

68.300

68,400

68,400

69,000

69,000

69,300

70,100

70,100

70,000

70,000

70,100

70,200

70,300

70.400

70,100

69,700

69,700

70,200

69,800

69,800

70,200

70,300

5,565.6

+800

June

70,3OO 

70,200

70,300

70,300

70.000

70,000

70,100

70,200

70,200

70,200

70,300

70,200

70,200

70,100

70,100

70,200

70.400

70,400

70,400

70,400

70,300

70,300

70,400

70,400

70,400

70,400

70,400

70,400

70,400

70,400

5,565.8

+100

July

70.500 

70,200

70,300

70,100

70,100

70,100

70,000

70,000

69,900

69,600

69,300

69,100

68,900

68,500

68,300

68,100

67,900

67,600

67,400

67,200

66,800

66,500

66,400

66,100

66,000

65,800

65,800

65,700

65 , 600

65,300

65 , 100

5,559.1

-5,300

Aug.

64,900 

64,700

64.500

64,900

64,900

65,700

66,100

66,5OO

66.800

66,800

66,SOO

66,700

66,600

66,600

66,600

66,500

66,400

66,400

66,400

66,400

66,500

66,500

66,400

66,400

66,500

66,60O

66,600

66,600

66,600

66,500

66,400

5,560.8

+1,300

Sept.

66.400 

66,100

66,000

65,700

65 , 600

65,300

65 , 100

64,900

64,700

64 , 400

64,100

63,900

63,600

63,300

63,000

62 , 800

62,400

62,200

61,900

61,600

61,200

60,800

60,400

60,000

59,400

59,100

58,600

58,100

57,700

57.200

5,549.3

-9,200

Calendar year 1955.................... * +32,200

Water year 1955-56.................... * +25.600

t Elevation, in feet, at end of month. 

* Change in contents in acre-feet.
SACRAMENTO RIVER BASIN 443

Bowman-Spaulding Canal at Intake, Calif.

Location. Lat 39°27', long 120°39', in sec. 8, T. 18 N. , R. 12 E., on left bank 150 ft 

downstream from Intake, 0.2 mile downstream from Bowman Dam, and 8 miles south of 

Sierra City.

Records available. October 1927 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,400 ft (from topographic map).

Average discharge. 29 years, 144 cfs (104,300 acre-ft per year).

Extremes.--1927-56: Maximum daily discharge, 262 cfs Aug. 2-9, 29, Sept. 10-13, 1928; no 

flow at times during most years.

Remarks. Records good. Canal diverts from left bank of Canyon Creek below Bowman Lake. 

Water is delivered to Lake Spaulding and, after passing through several powerhouses, 

is used for irrigation by Nevada Irrigation District.

Revisions (water years K--WSP 1395: 1935-36, 1940.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

219

221 2"2"o"

219

219

220

219

219

219

219

219

218

218

217

219

221

220

219

219

219

219

219

218

217

217

219

218

217

216

216

*217

6,776

219

13,440

Nov.

217

216

215

215

212

216

216

213

213

214

213

213

215

213

211

209

200

197

201

191

151

120

108

96

68

63

62

61

63

67

5,069

169

10,050

Dec.

68

67

64

62

63

66

64

64

64

63

63

63

64

63

63

65

65

65

51

28

19

iT~ 5.3

43

45

43

41

42

43

43

43

1,613.3

52.0

3,200

Calendar year 1955: Max 223

Jan.

43

43

44

45

45

45

46

52

54

55

43

33

34

38

40

36

35

35

*36

44

51

52

43

35

35

47

76

98

172

195

208

1,858

59.9

3,690

Feb.

208

207

209

205

180

209

217

214

213

214

217

219

219

218

219

217

215

215

214

215

215

215

216

216

220

223

221

222

223

6,215

214

12,330

Mar.

223

224

225

225

225

225

217

221

220

226

225

224

224

225

225

227

228

229

227

227

225

226

225

215

205

194

215

217

204

197

195

6,808

220

13,500

Apr.

209

221

2TT

221

201

205

189

173

161

155

161

182

193

205

216

213

205

184

164

145

134

125

110

94

89

84

99

136

140

135

4,970

166

9,860

May

128

120

107

43

30

33

42

75

80

76

78

108

132

ITO

117

52

78

66

59

49

40

37

34

36

40

82

82

56

53

84

30

2,177

70.2

4,320

June

1.0

8.5

5.8

.1

1.3

2.6

2.5

2.5

2.5

2.5

2.5

.8

.1

.1

.1

Q-0

0

0

0

0

.2

7.8

17

88

146.4

4.88

290

July

209 22~0~

222

222

222

222

222

222

221

221

221

224

225

22T

220

219

219

219

219

222

222

221

221

221

221

221

218

217

217

217

220

6,828

220

13,540

Mln 0 Mean 143 Ac-ft 103,400

Aug.

221

221

221

220

221

222

223

217 2~l8~

218

218

220

220

220

220

220

220

220

222

225

225

225

225

224

224

224

224

224

224

224

223

6,873

222

13,630

Sept.

223

223

224

223" 225

225

225

225

225

225

225

224

224

223

223

222

222" 221

225

225

225

223

223

222

223

225

225

225

225

224

6,719

224

13,330

Water year 1955-56: Max 229 Mln 0 Mean 153 Ac-ft 111,200

Discharge measurement made on this day.
444 SACRAMENTO RIVER BASIN

Canyon Creek below Bowman Lake, Calif.

Location. Lat 39°26', long 120°40' , in SE£ sec. 7, T. 18 N., R. 12 E., on left bank 1 mile 

downstream from Bowman Lake, 3 miles upstream from Texas Creek, and 9 miles south of 

Sierra City.

Drainage area. 30.4 sq mi.

Records available. January 1927 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 5,100 ft (from 

topographic map).

Average discharge. 29 years, 39.7 cfs (28,740 acre-ft per year).

Extremes. Maximum discharge during year, 1,370 cfs May 2 (gage height, 5.29 ft), from 

rat ing curve extended above 870 cfs; no flow Aug. 6-30.

1927-56: Maximum discharge, 2,520 cfs Dec. 4, 1950 (gage height, 6.28 ft), from 

rating curve extended above 820 cfs; no flow at times.

Remarks. Records good. Flow regulated by Bowman Lake beginning in 1926 (see p. 442) and 

diversion into Bowman-Spaulding Canal (see preceding page). Bowman Lake receives water 

from Middle Yuba River through Milton-Bowman tunnel (see p. 435).

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Jan. 16-22)

Oct. 1 to May 2

0 2.2

.8 2.6

3.1 3.0

5.6 3.5

9.2 4.0

160

276

440

May 2 to Sept. 30

172

325

520

1,190

Note.--Same as 

preceding table 

below 2.6 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.1

!i.1.1

.1

.2

.3

.2

.2

.3

.3

.3

.3

.3

.3

.3

.4

.5

Ts

.5

.5

.3

.1

.1

.3

.3

.2

.1

.1

.1

7.6

0.25

15

Nov.

0.1

.1

.1

.1

.1

.1

,1

.2

.3

.3

.3

.4

.5

.6

.6

.5

.6

.7

2.2

11

4.8

1.3

.8

.6

2.8

.8

1.0

.9

2.2

.9

35.0

1.17

69

Dec.

1.8

1.3 

1.0

.8

78

19

3.5

1.8

6.1

2.3

2.2

2.1

1.6

1.5

1.4

5.0

5.6

5.8

81

41

44

~SI 123

8.9

7.4

34

7.7

4.1

2.6

2.5

3.0

506.8

16.3

1,010

Jan.

3.5

3.7 

3.3

2.0

2.9

2.6

3.5

3.1

2.1

3.3

3.6

4.1

12

22

42_

5.4

2.3

2.2

*3.2

4.3

3.7

19

10

6.3

8.5

14

4.7

8.8

9.6

3.7

2.8

222.2

7.17

441

Feb.

2.6

276 

2.6

5.9

39

9.5

4.6

8.7

4.8

2.8

2.8

2.8

2.9

2.9

2.6

5.6

8.1

8.5

17

!§.

50

18

17

9.0

7.5

5.1

4.3

4.4

4.6

332.2

11.5

659

Mar.

4.8

5.3 

5.9

6.3

13

16

13

9.0

5.7

7.3

7.3

6.5

3.8

T^

4.1

4.8

5.3

5.3

5.2

5.3

5.3

- 6.0

6.0

9.7

5.9

12

5.3

8.8

15

12

9.4

233.2

7.52

463

Apr.

3.6

575 

5.9

9.2

12

9.5

8.9

16

14

5.9

8.1

4.7

8.1

4.9

4.6

5.1

5.3

6.0

6.5

6.2

8.5

8.5

7.9

16

24

32

20

17

31

6_9

383.9

12.8

761

May

353

1,040 

1,030

914

914

908

*877

758

650

455

*181

35

1826-

34

122

630

556

467

524

731

787

865

1,000

817

444

695

539

388

459

539

17,756

573

35,220

June

534

570 

610

640 454"

300

332

431

467

484

516

471

*451

435

367

353

350

367

419

378

342

336

353

360

339

314

336

308

300

264

12,211

407

24,220

July

~56 105

52

48

39

26

19

12

9.4

7.7

5.7

4.1

3.3

2.3

1.5

1.5

.9

.6

.5

.5

.4

.4

.4

.3

.3

.3

.2 72"

.2

.2'.2

398.1

12.8

790

Aug.

0.2

.3 

.2

.1

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

1.0

0.03

2.0

Sept.

0.2

.2

3

.1

.2

.2

.2

.2.2-

.3

.3

.3

.2

.1

.1

.1

.1

A

75

.3

.2

.2

.2

.1

.1

.1

.1

.1

.1

5.4

0.18

11

Calendar year 1955: Max 123 Mln 0.1 Mean 2.68 Ac -ft 1,940

Water year 1955-56: Max 1,040 Min o Mean 87.7 Ac-ft 63,660

* Discharge measurement made on this day .
SACRAMENTO RIVER BASIN 445

Yuba River at Englebright Dam, Calif.

Location. Lat 39°14'22", long 121°16'00", in SW^-SE^ sec. 14, T. 16 N., R. 6 E., on left 

bank upstream from spillway of Englebright Dam, 1 mile upstream from Deer Creek and 

2.5 miles northeast of Smartville.

Drainage area. 1,104 sq mi (revised).

Records available.--October 1941 to September 1956. Prior to October 1953, published as 

"at Narrows Dam." If record for Deer Creek near Smartville since 1941 is added to record at this site, a record equivalent to that published from 1903 to 1941 as Yuba River 

at Smartville can be obtained.

Gage. Water-stage recorder, flow meter in penstock and watt meters in powerhouse just below dam. Datum of gage is 526.99 ft above mean sea level (levels by Corps of Engineers).

Average discharge. 15 years, 2,671 cfs (1,934,000 acre-ft per year).

Extremes. Maximum discharge during year, 148,000 cfs Dec. 23, including flow through powerhouse, from rating curve extended above 25,000 cfs on basis of computation of peak flow 

over spillway of dam; no flow Oct. 6.

1941-56: Maximum discharge, that of Dec. 23, 1955; no flow Nov. 8 to Dec. 2, 1941, 

Jan. 23-27, 1949, Oct. 6, 1955, water being stored at dam.

Remarks. Records good. Diversions for power and irrigation above station. Up to 250 cfs 

can bypass station and up to 670 cfs can be diverted into Bear River basin. Plow regulated by Lake Spaulding beginning in 1912 (capacity, 74,500 acre-ft), Englebright ReserBowman Lake (see p. 442 ), Fordyce 

and many smaller reservoirs. Records

voir beginning in 1941 (capacity, 70,000 acre-ft 

Lake beginning in 1926 (capacity, 46,700 acre-ft.,

given herein show total flow over Englebright Dam'spillway"and through and past powerplant .

Cooperation. Records of flow through powerplant furnished by Pacific Gas and Electric Co.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

250

175

170

170

170

0

142

170

175

175

250

310

250

234

235

210

222

160

170

*230

232

250

222

130

180

383

390

372

311

208

235

6,781

219

13,450

Nov.

220

 220 200

244

250

250

250

250

250

250

234

248

270

320

370

425

490

450

380

350

510

570

575

570

575

578

580

580

585

585

11,629

388

23,070

Dec.

580

505

545

595

600

620

640

640

645

650

655

630

570

670

680

690

690

640

25,200

34,100

22,200

98,900

* 122,000

48,600

20,800

26,700

23,800

13,400

9,450

7,560

6,660

470,615

15,180

933,500

Jan.

6,230

5,940

5,180

5,330

9,120

7,350

6,600

7,640

6,120

6,180

6,340

5,720

6,930

19,200

34,100

28,800

16,600

11,700

9,350

8,950

9,450

9,720

14,700

10,900

11,200

13,900

13,300

9,890

8,060

6,860

*6,070

327,430

10,560

649,400

Feb.

5,390

4,830

4,520

4,240

3,970

3,750

3,480

3,320

3,150

3,040

2,940

2,840

2,790

2,710

2,610

2,440

2^,400

2,430

2,430

4,330

5,360

8,020

15,400

7,810

6,040

5,250

4,530

4,140

4,050

128,210

4,421

254,300

Mar.

3,740

3,640

3,650

3,760

3,950

3,640

3,350

3,210

3,150

3,150

3,030

2,950

2,890

2,870

2,870

2,870

2,950

3,200

3,400

3,480

3,570

3,630

3,790

4,050

4,430

4,800

4,460

4,080

3,950

4,080

4,210

110,830

3,575

219,800

Apr.

3,920

3,490

3,210

3,040

3,070

3,210

3,410

3,610

3,82O

4,270

4,330

4,020

3,550

3,290

3,070

2,960

3,010

3,070

3,350

3,730

4,290

4,490

4,900

5,170

5,280

6,040

5,320

4,460

4,080

3,940

117,400

3,913

232,900

May

*4.100

5,680

6,600

13,100

11,000

9,540

8,860

7,740

6,950

6,760

6,760

5,900

4,960

4,660

4,560

5,280

7,210

7,550

7,520

8,940

11,000

12,100

13,100

13,200

11,300

10,200

11,500

8,780

7,620

7,900

7,850

258,220

8,330

512,200

June

7,610

6,630

7,620

8,050

6,470

5,160

4,720

5,270

5,320

5,770

6,250

5,520

4,960

5,140

4,420

3,600

3,370

3,660

3,970

3,660

2,920

3,230

3,140

3,200

2,840

2,760

2,820

3,040

2,710

2.270

136,100

4,537

270,000

July

2,290

2,240

,770

,320

,200

,200

,180

,070

,030

945

920

805

716

712

712

712

712

712

712

710

710

710

705

700

705

708

707

710

650

705

707

29,385

948

58,280

Aug.

710

715

713

710

705

705

710

705

700

702

705

705

705

705

705

705

710

706

700

710

710

710

710

700

658

695

690

695

695

690

690

21,774

702

43,190

Sept.

690

690

690

680

680

680

678

670

670

670

665

660

660

653

645

645

642

640

640

635

637

640

620

395

307

310

315

319

325

325

_

17,476

583

34,660

Calendar year 1955: Max 122,000 Mln 0 Mean 2,434 Ac-ft 1,762,000

Water year 1955-56: Max 122,000 Mln 0 Mean 4,470 Ac-ft 3,245,000

Peak discharge (base. 7,100 cfs).--Dee. 19 (8 p.m.) 53,300 cfs; Dec. 23 (3 p.m.) 148,000 cfs; 

Dec. 26 (8 p.m.) 39,500 cfs; Jan. 5 (4 p.m.) 10,000 cfs; Jan. 8 (2 a.m.) 8,780 cfs; Jan. 15 (8 p.m.) 

50,300 cfs; Jan. 23 (7 a.m.) 16,200 cfs; Jan. 26 (6 p.m.) 17,000 cfs; Feb. 23 (3 a.m.) 22,600 cfs; 

May 4 (7 p.m.) 16,400 cfs; May 24 (time and discharge unknown); June 4 (time and discharge unknown).

* Discharge measurement made on this day.

Mote. Discharge computed from reconstructed gage-height graph based on once-daily staff-gage 

readings May 21 to July 27.
446 SACRAMENTO RIVER BASIN

Deer Creek near Smartville, Calif.

Location. Lat 39°13'28", long 121°16'03", in SW^SE^ sec. 23, T. 16 N., R. 6 E. on left 

bank 400 ft upstream from county road bridge; 1 mile upstream from mouth, and 2 miles 

northeast of Smartville.

Drainage area. 84.6 sq mi.

Records available.--June 1935 to September 1956.

SMf-. Water-stage reoorder. Altitude of gage is 500 ft (from topographic map). June 21 

1935, to Nov. 30, 1938, staff gage at same site and datum.

Average discharge. 21 years, 147 cfs (106,400 acre-ft per year).

Extremes. Maximum discharge during year, 11,300 cfs Dec. 23 (gage height 13.60 ft)- from 

rating curve extended above 5,200 cfs by logarithmic plotting; minimum, 3.3 cfs July 9

1935-56: Maximum discharge, 11,300 cfs Mar. 9, 1943, Dec. 23, 1955 from rating 

curve extended above 5,200 cfs by logarithmic plotting; maximum gage height. 13.62 ft 

Mar. 9, 1943; minimum discharge, 0.1 cfs Aug. 4-6, 15, 1940.

Remarks. Records good. Natural flow of stream is affected by Scotts Flat Reservoir beginning in 1949 (usable capacity, 26,300 acre-ft), Deer Creek Reservoir (capacity 1 400 

acre-ft), power developments, and diversion for irrigation. At times, water from South 

Yuba River is diverted into Deer Creek and water from Deer Creek is diverted to Bear 

River.

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 3O

1.2

1.3

1.4

259

379

530

735

1,360

1.4 

1.6

3.2 

4.6 

6.6

2.0 

2.5 

3.0 

3.5

56

110

176

259

2°2 67 g'o i%Rn Note. Same as precedZ.6 115 lo'.O 5 550 lng table above 3 ' 5 ft '

3.0 170 11.0 6,920

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ao-ft

Oct.

5.0

5.0

5.2

5.0

5.0

4.9

4.7

4.9

4.9

12

14

9.4

7.5

7.5

7.2

6.8

6.3

6.6

5.6

5.5

4.9

4.6

4.3

4.2

4.2

5.6

6.6

6.8

6.6

6.3 

6.1

193.2

6.23

383

Nov.

6.1

6.6

6.6

6.3

6.3

6.3

5.8

5.5

5.3

5.0

5.3

5.3

10

29

22

22

64

35

36

35

90

36

25

35

23

17

17

16

16

14

612.4

20.4

1,210

Dec.

146

58

31

20

50

1,590

148

107

178

77

50

42

37

34

*31

41

115

392

4,440

1,790

914

4,700

5.650

1,260

656

2,940

1,6OO

928

668

530

540

29,763

960

59,030

Jan.

726

585

450

571

1,350

*699

845

766

523

569

498

450

638

2,620

3,910

1,990

*1,150

835

645

681

633

1,190

939

641

1,420

1,560

1,500

855

645

554

*495

30,933

998

61,350

Feb.

450

410

374

353

332

3O8

290

277

257

253

247

241

236

229

224

216

214

225

241

1,740

740

1,250

1,450

605

691

569

456

404

393

13,675

472

27,120

Mar.

*356

337

332

327

343

327

303

292

281

272

263

251

247

243

239

234

230

230

232

239

234

225

225

222

225

224

222

219

214

209

*209

8,006

258

15,880

Apr.

206

198

190

180

168

156

140

135

135

140

99

99

86

82

95

128

102

67

44

35

34

31

SI

30

35

189

118

73

60

52

3,136

105

6,220

May

*45

43

97

393

123

95

85

76

77

78

8485'

75

69

64

54

41

36

32

29

27

24

22

*22

22

20

20

20

9.7

10

1,887.7

60.9

3,740

June

12

8.2

6.4

6.4

10

10

8.2

8.2

8.6

8.6

6.4

6.2

5.6

5.4

5.2

4.2

4.6

5.4

5.4

6.4

6.0

5.4

5.2

4.3

4.0

3.9

3.9

4.3

fjf

186.0

6.20

369

July

5.2

4.5

4.2

4.6

4.3

*4.3

4.3

4.3

3.8

3.9

4.0

4.2

4.3

4.2

4.5

5.2

5.0

4.6

5.4

5.2

5.6

6.0

5.6

5.0

4.8

4.6

*4.3

6.2

6.4

8.2

8.9

155.6

5.02

309

Aug.

7.4

7.4

7.4

8.9

172

8.2

6.4

5.6

5.4

5.6

5.6

5.6

5.6

5.4

5.2

5.4

6.2

6.4

6.6

7.8

6.0

5.2

6.0

6.0

6.0

6.6

6.6

6.2

7.0

5.8

5.8

197.5

6.37

392

Sept.

5.6

6.0

5.8

5.4

5.8

6.0

7.0

8.9

8.6

7.4

6.2

5.0

*5.2

5.4

6.0

5.4

5.2

b.4

26

24

24

21

22

20

18

16

15

15

15

13

339.3

11.3

673

Calendar year 1955: Max 5,650 Mln 3.9 Mean 112 Ac-ft 81,350

Water year 1955-56: Max 5,65O Mln 3.8 Mean 243 Ac-ft 176, 7OO

Peak discharge (base. 3.50O cfsh Dec. 6 (7 a.m.) 3,590 cfs (8.31 ft); Dec. 19 (4 p.m.) 6,580 cfs 

(10.76 ft); Dec. 23 (12:30 p.m.) 11,3OO cfs (13.6O ft); Dec. 26 (3 p.m.) 5,300 cfs (9.79 ft); Jan. 

15 (3:30 p.m.) 6,68O cfs (1O.83 ft); Feb. 22 (11:30 p.m.) 3,940 cfs (8.63 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 447

Dry Creek near Brownsville, Calif.

Location.--Lat 39°28'40", long 121°1S'1S", in NW£ sen. 25, T. 19 N., R. 6 E., on left bank 

0.2 mile downstream from New York Creek and 0.9 mile northeast of Brownsville.

Drainage area. 20.4 sq mi.

Records available. October 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,220 ft (from topographic map).

Average discharge. 8 years, 38.9 cfs (28,160 acre-ft per year).

Extremes. Maximum discharge during year, 1,890 cfs Dec. 22 (gage height, 7.48 ft), from 

rating curve extended above 920 cfs; minimum, 1.8 cfs Oct. 2.

1948-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.3 cfs Aug. 24, 1950.

Remarks. Records good. No large diversion above station. 

Re vis ions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Dec. 5 Dec. 6 to Feb. 22 Feb. 23 to Sept. 3O

0.9

1.0

1.1 

1.3 

1.5 

1.9 

2.4

1.4

2.7

4.5

9.3

15

30

60

1.4

1.5

1.7 

2.0 

2.5 

3.0 

4.0 

5.0 

6.0

14

18

27

45

94

158

344

685

1,120

1.1

1.2

1.3

1.4 

1.7 

2.0

4.4

5.2

6.8

10

24

45

Note. Same as 

preceding table 

above 2.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

2fc

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2^0 

2.0

2.0

2.0

2.2

2.0

2.0

2.2

2.2

4.8

4.5

3.8

3.4

3.4

3.1

2.9

2.9

2.9

*3.2

3.2

3.4

3.4 

3.6

3.8

3.6

7.0

576

4.7

4.3

4.0

4.0

104.1

3.36

206

Nov.

4.0 

4.1

4.1

4.1

4.5

4.1

4.1

4.1

4.1

4.1

4.1

4.3

7.2

12

8.8

7.7

*9.3

10

15

26

42

17 

16

16

13

12

12

11

11

10

305.7

10.2

606

Dec.

41 

20

15

12

49

442

49

33

51

26

20

17

15

*14

14

24

68

185

829

358

*400

*1,OOO 

882

284

154

502

219

141

*108

90 

95

6,157

199

12,210

Jan.

174 

118

94

167

193

125

255

18S

126

129

106

92

250

561

805

*345

220

175

155

204

162

268 

210

155

*250

377

275

199

166

145

131

6,818

220

13,520

Feb.

118 

111

105

99

94

88

83

80

76

74

71

69

67

65

64

62

*58

56

58

465

406

916 

48T

242

200

176

168

158

161

-

4,871

168

9,660

Mar.

140 

130

124

124

123

112

106

loo

94

90

86

81

78

76

72

70

67

65

63

62

61

*57

56

54

53

51

50

48

47

46

47

2,433

78.5

4,830

Apr.

46 

43

41

40

39

38

37

36

35

36

56

55

45

44

39

37

34

33

31

*3O

31

30

29

29

36

82

50

39

35

33

1,189

39.6

2,360

May

30 

29

62

~65 134

56

51

43

41

41

45

39

36

33

31

29

29

28

27

28

26

24 

23

23

*22

22

21

21

21

1,120

36.1

2,220

June

«

19

18

19

18

18

17

16

16

17

16

15

16

17

16

15

13

14

14

14

13 

13

13

12

11

*10

10

10

10

449

15.0

891

July

10

To

10

10

10

9.7

9.0

9.0

S.6

8.2

8.2

8.2

8.6

7.9

8.2

8.2

8.6

7.5

6.8

6.8

6.5

6.5 

6.3

6.5

6.3

*6.0

6.0

5.8

1.2

5.7

5 8

240.6

7.76

477

Aug.

^8 

5.8

5.7

5.8

5.7

5.7

5.7

5.7

5.7

5.7

5.4

5.2

5.4

5.4

5.4

5.2

5.2

5.1

5.2

5.2

5.1

5.1 

5.0

5.1

5.1

5.O

5.0

5.0

5.0

5.0

5.0

165.4

5.34

328

Sept.

5.0 

5.0

4.9

4.9

4.9

4.9

4.9

5.0

5.0

5.0

5.0

5.0

5.0

5.O

5.0

5.0

5.0

5.2

~6.8 13

*5.8

5.5 

5.4

5.2

5.2

5.2

5.1

5.1

5.1

5.0

162.1

5.40

322

Calendar year 1955 : Max 1,000 Mln 1.4 Mean 30.3 Ac-ft 21,960

Water year 1955-56 : Max 1,OOO Mln 2.O Mean 65.6 Ac-ft 47,630

Peak discharge (base, 270 cfs). --Dec. 6 (6 a.m.) 1,240 cfs (6.23 ft); Dec. 19 (7 p.m.) 1,3OO cfs

(6.36 ft); Dec. 22 (2 a.m.) 1,89O cfs (7.48 ft); Dec. 26 (11 a.n.)>S35 cfs (5.60 ft); Jan. 4 (10:30

p.m.) 326'cfs (3.93'ft); Jan.'7 (7 p.m.) 633 cfs (4.87 ft); Jan. 15 (2:30 p.m.) 1,340 cfs (6.45 ft); 

Jan. 22 (7 p.m.) 528 cfs (4.58 ft); Jan. 26 (9 a.m.) 560 cfs (4.67 ft); Feb. 20 (10 p.m.) 966 cfs 

(5.67 ft); Feb. 22 (8 p.m.) 1,45O cfs (6.66 ft). 

* Discharge measurement made on this day.
448 SACRAMENTO RIVER BASIN

Dry Creek at Virginia Ranch, Calif.

Location. Lat 39°19'20", long 121 C 18'45", in NW£ sec. 21, T. 17 N., R. 6 E., on right bank 

0.4 mile south of Virginia Ranch, 3.0 miles downstream from Willow Glen Creek, and 

5.5 miles east of Loma Rica.

Drainage area. 71.3 sq mi.

Records available.--October 1948 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,060 ft (from topographic map).

Average discharge. 8 years, 122 cfs (88,320 acre-ft per year).

Extremes. Maximum discharge during year, 9,120 cfs Dec. 22 (gage height, 9.85 ft), from 

rating curve extended above 1,700 cfs on basis of slope-area determination at gage 

height 9.15 ft; minimum, 0.9 cfs Oct. 8, 9.

1948-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.4 cfs Nov. 6, 1949.

Remarks. Records good. Medium and low flows partly regulated by Lake Mildred (capacity, 

1,500 acre-ft). Several diversions above station for irrigation.

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to May 3 May 4 to Sept. 30

0.95

1.0

1.1

1.2 

1.4 

1.6

0.80

1.2

2.4

4.2

9.2

16

1.9 

2.2 

2.5 

3.0 

3.5 

4.0

32

56

89

174

304

480

4.5 

5.0 

6.0 

7.0 

9.0

695

970

1,780

3,040

7,040

1.1

1.2 

1.4 

1.6 

1.9 

2.2

4.0

5.9

12

19

33

56

Note.--Same as 

preceding table 

above 2.2 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.5

1.5

1.5

1.6

1.8

1.4

1.2

iuO

1.1

2.0

1.8

1.3

1.2

1.2

1.3

1.3

1.3

1.5

1.4

1.4

1.4

1.4

1.4

1.3

1.3

2.0

1.8

1.5

1.4

1.4

1.4

44.6

1.44

88

Nov.

1.4 

1.3

1.3

1.3

1.4

1.4

1.4

1.3

1.3

1.3

1.3

1.2

274

3.6

2.4

2.9

*6.9

4.8

4.6

4.8

9.8

5.9

6.9

8.2

5.9

5.2

5.0

5.0

5.0

5.0

110.2

3.67

219

Dec.

23

11

7.2

6^9

47

2,070

277

107

178

89

54

40

33

28

25

45

264

691

5.150

1,920

1,430

4,820

4,270

*1,110

453

2,200

' 745

413

289

241

370

27,407.1

884

54,360

Jan.

57-2 

377

260

417

659

360

679

711

356

360

292

236

643

3,280

4.560

1,190

605

457

388

565

461

1,020

743

446

1,020

1,350

966

600

450

377

333

24,733

798

49,060

Feb.

286 

260

243

225

213

194

181

170

158

154

149

145

138

132

125

116

115

115

129

2,000

1,370

2,470

1,850

614

*614

512

431

388

381

13,878

479

27,530

Mar.

~Z86

271

260

266

230

210

203

192

176

164

154

150

141

134

131

127

122

116

114

110

106

*103

99

93

64

28

77

71

55

84

4,654

150

9,230

Apr.

81 

76

70

69

68

66

64

63

61

62

103

118

87

85

76

70

64

54

47

46

44

43

42

40

45

175

115

72

60

52

2,118

70.6

4,200

May

47 

45

112

493

181

136

110

99

79

76

85

70

60

53

49

45

42

40

38

37

35

35

33

*32

30

29

28

26

26

26

26

2,223

71.7

4,410

June

If

22

21

21

21

21

20

19

18

17

17

17

16

17

17

16

15

14

14

14

13

12

12

12

10

9.5

8.3

5.9

7.2

477.9

15.9

948

July

12

To

9.5

8.9

8.6

6.2

5.9

672

6.4

6.4

6.2

6.2

6.4

6.4

6.4

6.4

6.4

6.2

6.2

6.2

6.2

6.2

5.9

5.9

*6.4

6.2

5.9

5.9

6.2

6.2

5.9

210.0

6.77

417

Aug.

5.9 

6.2

6.4

6.4

6.4

6.4

6.4

6.4

6.2

5.9

5.7

672

6.4

6^6

6.4

6.4

6.6

6.4

6.4

6.4

6.4

6.4

6.4

6.2

6.2

6.2

6.2

6.2

6.2

6.2

6.2

194.9

6.29

387

Sept.

ftf

5.7

5.5

5.9

6.2

5.9

5.9

5.7

5.5

5.5

5.5

5.5

5.3

5.1

4.9

4.9

4.9

7.2

5.5

*5.3

5.3

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.1

164.4

5.48

326

Calendar year 1955: Max 5,150 Mln 1.0 Mean 109 Ac-ft 78,970

Water year 1955-56: Max 5,150 Mln 1.0 Mean 208 Ac-ft 151,200

Peak discharge (base, 1,900 efs).--Dee. 6 (7:30 a.m.) 5,670 cfs (8.39 ft); Dec. 19 (3 p.m.) 8,350 

cfs (9.54 ft); Dec. 22 (2:30 a.m.) 9,120 cfs (9.85 ft); Dec. 26 (3 p.m.) 4,640 cfs (7.90 ft); Jan. 7 

(9 p.m.) 2,170 cfs (6.36 ft); Jan. 15 (3 p.m.) 8,000 cfs (9.40 ft); Jan. 22 (7 p.m.) 2,640 cfs (6.73 

ft); Jan. 26 (9:30 a.m.) 2,430 cfs (6.57 ft); Feb. 22 (10 p.m.) 6,150 cfs (8.61 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 449

Yuba River at Marysville, Calif.

Location. Lat 39°08'40", long 121°34'35", near left bank at Simpson Lane Bridge in Marysville, Yuba County, about 2 miles upstream from mouth.

Drainage area. 1,340 sq mi.

Records available.--October 1940 to September 1956 (1940-43, 1945, low-water periods only) 

 in reports of Geological Survey. 1939-56 (1939-43, 1945, low-water periods only) in 

reports of California Department of Water Resources.

Gage. Water-stage recorder. Gage is set to datum of Corps of Engineers. Since Jan. 1, 

i960, auxiliary water-stage recorder at mouth.

Average discharge.--18 years (1943-44, 1945-56), 2,748 cfs (1,989,000 acre-ft per year).

Extremes. Maximum daily discharge during year, 136,000 cfs Dec. 23; maximum gage height, 

82.5 ft probably Dec. 23, from floodmarks; minimum discharge, 43 cfs Oct. 11, 12.

1943-44, 1945-56: Maximum daily discharge, that of Dec. 23, 1955; maximum gage 

height, that of Dec. 23, 1955.

1940-56: Minimum discharge recorded, 34 cfs Oct. 17, 1949.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Discharge for Oct. 1 to Dec. 20 computed on basis of,Yuba River near Marysville 

4.2 miles upstream. Flow regulated by several reservoirs above station. Many diversions above station for power. Diversions for irrigation of about 13,000 acres between 

stations at Englebright Dam and at Marysville. Records of chemical analyses for the 

water year 1956 are published in WSP 1453.

Cooperation. Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

168 

168

77

58

54

50

47

46

¥6- 44

*44

46

130

84

88

73

73

77

62

51

47

50

79

75

71

51 

234

ZZS

211

144

84

2,754

88.8

5,460

Nov.

107 

79

70

86

112

116

116

*116

110

99

94

80

101

180

240

279

431

471

453

349

516

610

610

'elo" 625

595 

595

590

595

605

----- '

9,650

322

19,140

Dec.

540 

728

658

636

636

3,330

1,400

856

964

828

734

698

*692

680

674

692

771

1,250

24,200

*42,800

*26,000

113,000

*L36,000

52,100

22,400

34,000 

26,900

15,200

10,700

8,570

7,940

536,577

17,310

*1,064

Jan.

8,100 

7,280

6,150

6,740

11,800

8,770

8,800

9,830

7,360

*7,470

7,420

6,640

8,850

28,300

47,100

33,200

19,000

13,400

*10,800

10,800

11,000

13,000

17,100

12,400

14,700

18,200 

16,700

11,900

9,600

8,170

7,230

407,810

13,160

808,900

Feb.

6,410 

5,760

5,380

5,340

4,730

4,450

4,130

3,940

3,720

3,600

3,480

3,370

3,300

*3,200

3,080

2,890

2,840

2,880

2,930

10,100

8,840

14,200

20,600

9, 640

7,960

6,840 

5,850

5,320

*5,200

-

------

169,980

5,861

337,200

Mar.

4,730 

4,550

4,550

4,610

4,820

4,430

4,070

3,910

3,820

3,770

3,620

3,510

*3,440

3,400

3,380

3,570

3,436

3,670

3,860

3,950

4,020

4,070

4,220

4,470

4,840

5,150 

4,740

4,450

4,310

4,400

4,590

128,150

4,134

254,200

Apr.

4,290 

3,850

3,600

3,370

3,370

3,500

3,680

3,870

4,080

*4,530

4,480

4,240

3,810

3,540

3,320

3,230

3,240

5,130

3,220

3,860

4,410

4,610

4,700

5,020

5,150

5,800 

5,780

4,780

4,180

3,930

122,570

4,086

243,100

May

5,880 

4,670

5,860

9,960

15,100

10,700

10,200

*8,980

7,990

7,630

7,450

6,900

6,040

5,550

5,290

5,480

6,660

7,640

7,490

8,230

9,610

10,300

10,900

11,000

9,770

9,210 

8,540

8,440

7,460

7,380

7,260

249,570

8,051

495,000

June

7,310 

6,340

6,940

7,580

6,490

5,240

4,630

4,990

5,170

5,280

5,540

*5,280

4,760

4,830

4,450

3,670

3,470

3,540

3,690

3,700

3,100

2,900

2,800

2,900

2,200

2,100 

2,200

2,400

2,100

2,100

127,500

4,250

252,900

July

1,700 

1,400

1,150

1,050

1,000

940

860

780

700

*645

560

480

400

340

340

340

340

340

340

343

343

361

352

346

343

343 

340

340

337

316

537

17,806

574

35,320

Aug.

334 

340

340

340

349

346

346

343

346

552

343

346

349

*346

349

346

343

337

343

343

343

331

331

331

325

316 

334

325

325

322

322

10,486

338

20,800

Sept.

319 

319

310

3Z8

334

349

370

373

385

385

*391

388

388

385

394

403

403

409

468

474

450

446

443

403

382

330 

340

340

340

335

------

11,390

380

22,590

Calendar year 1955: Max 136,000 Mln 44 Mean 2,513 Ac-ft 1,819,000

Water year 1955-56: Max 136,000 Mln 44 Mean 4,902 Ac-ft 3,559,000

Discharge measurement made on this day

t Expressed In thousands. 

Note. No gage-height record Dec. 21 to Apr. 1, Apr. 5-10, 14-17, 20-22, June 21 to July 19, 

;pt. 26-30; discharge estimated on basis of 9 discharge measurements and records for upstream 

nations.
450 SACRAMENTO RIVER BASIN

Bear River near Auburn, Calif.

cation. Lat 39°00'45", long 121°06'10", in NE£ sec. 5, T. 13 N., R. 8 E. , on right bank 

300 ft upstream from bridge on State Highway 49, 2.6 miles upstream from Wolf Creek, and 

8 miles north of Auburn.

Drainage area. 140 sq mi.

Records available. December 1940 to September 1956 in reports of Geological Survey. 1922, 

1925-28, 1929-33 (gage heights for high-water periods only), in reports of California 

Department of Water Resources.

Gage. Water-stage recorder. Altitude of gage is 1,250 ft (from topographic map). Prior 

to July 13, 1946, at datum 3.40 ft higher.

Average discharge.- 15 years (1941-56), 306 cfs (221,500 acre-ft per year).

Extremes . Maximum discharge during year, 19,700 cfs Dec. 22 (gage height, 16.56 ft), from 

rating curve extended above 5,000 cfs by logarithmic plotting and on basis of computed 

flow over Van Giesen Dam, 3 miles upstream from station; minimum, 0.6 cfs Nov. 1, 2, 3.

1940-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.1 cfs Nov. 9, 10, 

1953.

Remarks . Records good. Natural flow of stream affected by inflow from Yuba River and 

American River basins, storage reservoirs including Lake Combie (capacity, 7,840 acreft), power developments, and diversion for irrigation.

Revisions (water years). WSP 981: Drainage area. WSP 1215: 1943(M).

Rating tables, water year 1955-55 (gage height. In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Oct. 1 to Dec. 19, Aug. 5 to Sept. 30)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

3.2

3.3

3.4

3.5

3.6

3.7 

3.9 

4.2

0.6

1.1

1.7

3.1

5.7

9.8

22

51

4.6 

5.0 

5.5 

6.0 

7.0 

8.0 

9.0 

11.0

105

182

340

550

1,130

1,850

2,930

5,910

3.3

3.4

3.5 

3.7 

4.0 

4.3 

4.6 

5.0

2.0

4.2

9.0

23

50

86

134

242

5.5

6.0

7.0

8.5

10

12

14.5

440

705

1,350

2,640

4,380

7,830

13,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.0

3.9

2.8

3.6

3.9

3.6

3.6

3.6

3.1

4.4

6.5

6.5

5.7

4.9

4.1

2.7

3.1

3.9

1.1

1.1

 1.1

1.1

1.0

1.0

1.2

1.4

1.1

1.0

.8

.8

_J_

86.3

2.78

171

Nov.

0.6

.6

.7

.8

1.0

1.3

1.3

1.3

1.4

1.4

1.5

1.6

2.5

3.9

3.4

3.4

4.7

15

15

15

16

17

17

16

16

11

3.9

3.9

3.9

9.0

191.1

6.37

379

Dec.

14

20

19

18

20

63

*44

48

50

46

44

47

47

46

43

43

47

56

*3,700

*4,460

2,160

15,400

13,000

5,600

2,540

4,400

3,090

1,890

1,520

1,260

1,140

58,875

1,899

116,800

Jan.

1,170

1,240

1,050

*915

2,420

1,790

1,400

1,480

1,200

1,220

1,160

1,050

1,100

2,960

6.160

4,250

2,120

1,630

1,410

1,310

1,360

1,520

2,240

1,530

2,210

2,000

1,950

1,730

1,430

1,280

1,150

55,435

1,788

110,000

Feb.

1,050

958

891

855

825

801

729

688

683

656

628

578

525

562

510

435

412

422

431

1,020

1,330

1,330

2,600

1,380

* 1,100

1,010

873

813

849

24,944

860

4,9,480

Mar.

741

717

688

678

777

705

634

551

606

551

480

505

500

465

431

450

422

431

426

440

408

412

417

381

360

365

369

360

332

336

332

15,270

493

30,290

Apr.

356

336

305

283

256

252

236

236

510

672

771

765

723

705

678

661

*568

320

305

298

262

232

*245

252

287

568

515

394

214

209

12,414

414

24,620

May

308

273

301

952

688

568

606

634

595

595

666

711

634

562

505

431

417

386

360

360

305

*301

301

276

249

266

266

210

174

132

147

13,179

425

26,140

June

138

127

108

94

97

125

88

17

3.3

5.2

7.6

5.6

11

13

*12

15

15

12

36

41

46

36

33

32

30

32

38

29

14

7.6

1,268.3

42.3

2,520

July

7.6

7.1

6.6

7.6

8.0

5.6

6.1

7.1

9.0

16

15

15

9.6

12

9.6

12

18

To

6.1

4.2

4.0

3.8

378

4.0

4.2

6.6

7.6

9.0

10

*7.6

5.2

258.0

8.32

512

Aug.

4.2

4.2

4.7

5.6

6.1

8.0

8.0

8.5

8.5

11

4..0

2.7

277

2.7

2.7

2.7

2.9

2.9

2.9

3.1

3.1

3.1

3.3

3.3

3.3

3.5

3.5

3.8

3.8

3.8

3.8

136.4

4.40

271

Sept.

3.8

3.8

3.3

3.3

3.3

3.3

3.3

3.5

3.5

3.8

3.3

3.3

3.3

3.3

. 3.5

3.5

3.5

3.5

4.0

4.2

4.0

3.8

3.5

*3.5

3.3

3.3

3.3

3.3

3.5

3.8

105.6

3.52

209

Calendar year 1955: Max 13,400 Mln 0.6 Mean 234 Ac-ft 169,700

Water year 1955-56: Max 13,400 Mln 0.6 Mean 498 Ac-ft 361,400

Peak discharge (base, 5.700 cfs). Dec. 19 (10 p.m.) 8,380 cfs (12.26 ft); Dec. 22 (9:30 a.m.) 

19.700 cfs (16756 ft); Dec. 26 (6 p.m.) 6,620 cfs (11.39 ft); Jan. 15 (7:30 p.m.) 10,300 cfs (13.14 

ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 

Bear River near Wheatland, Calif.

451

Location.--Lat 39°00'01", long 121°24'20", in see. 3, T. 13 N., R. 5 E., in midstream on 

downstream side of bridge on U. S. Highway 99E, 1 mile southeast of Wheatland and 

6.5 miles downstream from Rock Creek.

Drainage area. 295 sq mi.

Records available. October 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 78.92 ft above mean sea level (levels by 

California Department of Water Resources). Prior to July 17, 1929, staff gage at about 

same site at datum 2.58 ft higher. July 17, 1929, to Oct. 22, 1943, water-stage recorder 

at several sites within 300 ft of present site at datum 2.58 ft higher.

Average discharge.--27 years (1929-56), 444 cfs (321,400 acre-ft per year).

Extremes.--Maximum discharge during year, 33,000 cfs Dec. 22 (gage height, 19.30 ft); minimum, 1.2 cfs Sept. 7.

1928-56: Maximum discharge, that of Dec. 22, 1955; maximum gage height, 20.83 ft 

Nov. 21, 1-950; no flow Sept. 18-25, 1939, Sept. 5, 1949, Apr. 8-10, 1955.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Medium and low flows affected by Camp Far West Reservoir (capacity, 5,000 acre-ft), 

Lake Combie (capacity, 7,840 acre-ft), diversions for irrigation, and return flow 

from irrigated areas between stations near Auburn and near Wheatland. See Remarks for 

station near Auburn. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

5.5

578

6.1

8.5

6.8

7.5

5.8

5.8

7.5

17

76

71

69

69

65

60

69

124

67

26

*20

16

14 

19

19

20

20

18

17

15

10

960.3

31.0

1,900

Nov.

9.6

8.9

9.6

11

12

11

12

13

15

12

5.5

4.9

575

12

46

36

82

*89

73

73

130

102

73 

87

71

60

51

42

37

36

1,230.0

41.0

2,440

Dec.

170

218

96

6969"

*1,540

421

*221

438

249

174

147

132

120

110

98

160

393

7,070

*9,390

*3,170

*22,000

*22, 100 

13,000

4,520

7,420

5,650

3,200

2,410

1,940

1,840

108,535

3,501

215,300

Jan.

1,990

1,980

1,570

*1,2'80

3,820

2,810

1,850

2,120

1,460

1,470

1,380

1.190

1,210

5,470

10,700

8,650

4,080

2,790

2,260

2,130

2,120

2,590

4,110 

2,410

4,400

4,240

4,380

2,950

2,220

1,870

1,610

93,110

3,004

184,700

Feb.

,420

,270

,160

,120

,080

1,010

972

930

*895

842

806

758

704

716

669

608

581

59T

592

1,810

2,170

1,850

4,850 

2,480

*1,900

1,880

1,440

1,260

1,180

-

37,545

1,295

74,470

Mar.

1,080

979

944

895

993

951

848

764

776

752

680

658

669

642

603

608

592

581

*570

570

554

537

537 

520

495

470

470

480

450

435- 430

20,533

662

40,730

Apr.

460

450

420

397

361

348

305

321

424

680

867

902

STe

800

764

*740

704

450

406

370

251

118

82 

63

48

42

704

554

425

217

13,491

450

26J760

Hay

384

356

348

1,400

1,010

758

704

770

710

728

740

824

776

664

608

542

485

465

440

430

384

352

325 

321

281

*277

293

253

220

192

172

16,212

523

32,160

June

189

TT5

160

140

123

113

145

121

69

34

24

17

18

18

16

12

10

8

7

6

5

4

4 

3

£

2

2

*3

4.4

5.0

1,439.4

48.0

2,860

July

5.8

9.5

11

23

14

9.5

9.5

9.5

11

13

12

11

7.2

6.6

6.6

5.8

6.2

5.8

4.7

4.7

5.0

5.0

4.4 

4.7

4.7

9.5

*7.2

5.4

5.0

5.0

5.0

247.3

7.98

491

Aug.

5.0

5.0

5.0

5.0

5.4

5.4

7.2

~9.5 10

8.7

7.9

9.5

10

7.9

7.9

7.9

7.2

8.7

9.5

9.5

7.9

7.2

6.6 

6.6

6.2

6.6

3.5

378

7.9

7.9

7.2

223.6

7.21

444

Sept.

5.4

6.6

3.5

3.8

5.0

6.2

3.0,

370

6.2

6.6

7.2

7.2

*6.2

7.2

6.6

7.2

7.2

9.5

16

15

14

13

16 

15

12

10

10

10

10

26

274.6

9.15

545

Calendar year 1955: Max 22,100 Mln 0 Mean 432 Ac-ft 312,900

Water year 1955-56 : Max 22,100 Mln 2 Mean 803 Ac-ft 582,800

5.100 efs).--Dee. 6 (12 m. ) 3,660 cfs (7.72 ft); Dec. 19 (12 p.m.) 16,000 efs

. . p.m.. ) 33,000 cfs (l9.30 ft); Dec. 26 (8 p.m.) 11,300 cfs (12.49 ft); Jan. 5 

(6:30 p.m.) 5,420 cfs (8.94 ft); Jan. 15 (ll p.m.) 16,600 cfs (14.98 ft); Jan. 22 (11 p.m.) 5,650 cfs

Peak discharge (base

(14.72 ft): Dec. 22 (2 p.m.. ) 33,000 cfs (l9.30 ft)

.. , . 

(8.78 ft); Jan. 25 (11 a.m.) 5,940 cfs (8.98 ft); Feb. 23 (6:30 a.m.) 6,150 cfs (9.11 ft).

* Discharge measurement made on this day.

Hote. No gage-height record June 16-28; discharge Interpolated or estimated on the basis of 1 discharge measurement.
458 SACRAMENTO RIVER BASIN

Dry Creek near Wheatland, Calif.

Location. Lat 39°01'35", long 121°26'10", In Johnson Rancho land grant, on left bank 2,300 

ft upstream from bridge on U. S. Highway 99E, 1.3 miles northwest of Wheatland, and 

5 miles upstream from mouth.

Drainage area. 99.5 sq mi.

Records available.--October 1946 to September 1956.

Gage. Water-stage recorder. Datum of gage is 62.83 ft above mean sea level (levels by 

California Department of Water Resources).

Average discharge.--1Q years, 63.1 cfs (45,680 acre-ft per year).

Extremes. Maximum discharge during year, 8,790 cfs Dec. 23 (gage height, 13.45 ft); no 

flow during several months.

1946-56: Maximum discharge, that of Dec. 23, 1955; no flow at times each year.

Remarks.--Records good except those for periods of shifting control, which are fair. 

Portion of flow from drainage area may overflow or percolate into Best Slough above 

station. Flow in October and September mostly return flow'from irrigated areas.

Rating tables, water year 1955-56, except periods of shifting control (gage height, 

in feet, and discharge, in cubic feet per second)

2.85

2.9

3.0

3.1

3.2

3.3

Oct. 1 to Nov. 3

3.4

3.5 

3.7 

4.0 

4.2

Nov. 4 to Sept. 30

3.0 

5.0 

9.9

3.3

1.2 

1.7

3.5 

3.7 

3.9 

4.2 

4.5 

5.0

2.8

4.7

8.7

19

36

76

5.5

6.0

7.0

8.0

10.0

11.4

156

286

645

1,270

2,970

4,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

5.0

7.3

4.8

5.0

4.0

2.4

2.2

6.2

7.3

6.6

17

28

16

11

7.8

5.0

2.7

1.7

1.7

*2.1

3.2

5.0

3.0

1.7

1.3

1.3

1.2

.7

.8

.8

.JL

163.4

5.27

324

Nov.

0.2

.1

0

0

0

O

0

0

0

0

0

o

0

0

.1

5.0

*12

27

15

12

15

26

16

11

11

8.7

6.5

6.1

4.9

4.5

181.1

6.04

359

Dec.

4.5

37

22

13

9.3

*303

104

*43

65

51

31

19

12

9.0

7.6

7.6

12

69

3,360

*1,750

478

*2,960

*4,710

1,350

319

1,910

684

248

158

127

215

19,088.0

616

37,860

Jan.

242

231

146

122

487

318

253

508

183

178

156

115 174

2,350

3,970

1,130

340

202

150

242

190

557

*866

332

*1,410

911

800

4O1

212

156

123

17,455

563

34,620

Feb.

102

89

84

77

72

66

62

58

*54

51

49

47

46

43

41

37

35

37

37

417

218

238

728

160

213

270

125

96

87

3,639

125

7,220

Mar.

7669"

64

60

59

55

48

47

45

42

40

35

34

34

31

28

27

26

*25

24

24

24

24

27

22

21

18

17

18

19

18

1,101

35.5

2,180

Apr.

17

17

16

15

15

13

13

12

12

12

18

31

28

25

21

*18

14

9.6

8.3

6.1

11

16

10

9.0

10

33

11

42

34

12

570.0

19.0

1,130

May

0

11

9.6

103

71

46

40

34

31

46

51

49

46

37

34

31

31

30

27

19

9.3

0

0

1.0

2.4

*.9

0

0

0

0

0

7S0.2

24.5

1,510

June

(*)

0

0

0

July

(*)

0

0

0

Aug.

O

0

O

Sept.

0

0

0

O

0

0

0

0

0

0

0

0

*0

0

0

0

"6.9 43

6.1

6.1

12

4.0

2.2

3.9

0

O

0

0

O

0

84.2

2.81

167

Calendar year 1955: Max 4,710 Min 0 Mean 73.6 Ac-ft 53,260

Water year 1955-56: Max 4,710 Min o Mean 118 Ac-ft 85,370

Peak discharge (base. 2.000 cfsl . Dec. 19 (8 p.m.) 5,800 cfs (11.88 ft); Dec. 23 (5 p.m.) 

cfs (13.45 ft); Dec. 26 (5 p.m.) 3,190 cfs (l0.2O ft); Jan. 15 (8 p.m.) 6,260 cfs (12.23 ft) 

(11 p.m.) 2,310 cfs (9.30 ft); Jan. 25 (9 a.m.) 2,380 cfs (9.38 ft).

* Discharge measurement or observation of no flow made on this day.

Note. Shifting-control method used Dec. 2-6, Jan. 23-25, Apr. 9 to May 27, Sept. 16-25.

8,790 

Jan. 22
SACRAMENTO RIVER BASIN 453

Feather River at Nicolaus, Calif.

Location (revised).--Lat 38°54'00", long 121°35'00", on left bank at Nicolaus, Sutter 

County, 0.3 mile downstream from highway bridge and 2.9 miles downstream fron Bear 

River.

Records available.--June 1921 to December 1942 (low-water periods onlj) and April 1943 to 

September 1956 in reports of Geological Survey. 1939-56 in reports of California Department of Water Resources.

Gage.--Water-stage recorder. Gage is set to datum of Corps of Engineers. Prior to NovemHer 1931, on middle fender pier of bridge 0.3 mile (revised) upstream at same datum.

Average discharge.--13 years (1943-56), 8,185 efs (5,926,000 acre-ft per year).

Extremes.--Maximum discharge during year, 357,000 cfs Dec. 23; maximum gage height, 51.60 

ft Dec. 23; minimum daily discharge, 828 cfs Oct. 4.

1943-56: Maximum discharge, that of Dec. 23, 1955.

1921-56: Minimum discharge, no flow Aug. 2-1R, 1924, July 11-22, 24, 26, Aug. 1, 

1931.

Remarks.--Records fair prior to Feb. 12, good thereafter. Plow partly regul-ited by reservoirs and powerplants. Diversions for irrigation of about 87,000 acres between stations 

near Oroville and at Nicolaus. Approximately 500,000 acre-ft bypassed station because 

of levee break near Yuba City in December 1955 and January 1956. See Remarks for 

Feather River near Oroville. Records of chemical analyses and water temperatures for 

the water year 1956 are given in WSP 1453.

Cooperation.--Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1,320

1,190

954

828

858

864 

1,150

996

1,140

989

*940

1,440

 1,530

1,520

1,520

1,330

1,360

1,310

1,220

1,180

1,260

1,270

1,260

1,190

1,070

1,140

1,340

1,570

1,570

1,540

*1,300

38,149

1,231

75,670

Nov.

1,190

1,460

1,580

1,660

1,610

1,500 

1,230

*1,180

1,480

1,480

1,440

1,390

1,350

1,480

1,920

2,190

2,300

2,760

3,040

2,950

2,650

4, 790.

4,170

3,290

3,010

2,800

2,690

2,550

*2,290

2,400

------

65,830

2,194

130,600

Dec.

33,000

a3,600

a3,200

a2,800

a2,900

a9,000 

all, 000

*a6,700

5,440

5,280

4,620

3,630

*3,480

3,620

3,660

3,600

3,780

5,480

15,000

72,200

*104,000

154,000

*SL3,000

109,000

54,400

51,300

60,100

58,900

48,900

38,500

31,600

1,195,690

38,570

*2,372

Jan.

28,300

26,800

26,600

24,900

25,400

26,400 

24,700

27,700

29,500

25,800

*25,400

24,000

24,200

37,400

83,600

106,000

79,200

e 50, 000

37,400

33,800

34,600

36,700

38,700

42,200

42,900

50,800

49,900

41.300

33,600

29,700

26,900

tl, 194.4

38,530

*2,369

Feb.

25,000

22,000

19,600

17,900

16,900

16,100 

*15,100

14,500

13,800

13,400

13,200

13,300

13,200

*12,900

12,500

11,900

11,100

10,600

9,870

127TOO

25,500

29,900

55,000

67 . 500

53,300

45,200

38,100

32,800

30,000

_

------

672,270

23,180

*1,333

Mar.

28,500

26,300

25,100

24,600

24,000

23,400 

21,400

19,500

17,800

16,700

16,100

15,700

*15,200

14,800

14,700

14,200

TiTZBO"

14,700

15,900

17,100

18,000

18,500

19,000

19 , 700

20,600

21,700

22,700

21,700

*18,800

18,200

18,100

596,700

19,250

tl,184

Apr.

18,200

17,600

16,800

15,900

15,400

IS, 500 

15,800

16,400

16,900

*17,500

19,200

19,400

18,600

17,600

17,100

16,700

16,600

16,400

16,100

16,400

17,500

18,500

19,100

*19,700

20,000

19,900

21,700

20,000

18, 100

16,800

531,400

17,710

*1,054

May

16,200

16,500

17,900

20,200

31,500

31,900 

29,000

*26,400

23,800

21,900

20,800

20,600

19,300

17,500

16,300

15,900

16, 900

18,700

19,100

19,400

20,900

22,700

23,900

25,400

24,000

22,100

20,800

*20,100

18,600

17,400

17,300

653,000

21,060

*1,295

June

17,600

16,4OO

16,800

16,600

14,300 

12,800

12,300

12,000

11,600

11,600

*11,500

10, 600

10,200

9,950

9,330

9,140

8,790

8,820

*9,000

8,400

7,780

7,780

7,650

7,530

6,760

6,210

5,770

5,610

5,560

314,580

10,490

624,000

July

,180

,680

,470

,010

,420

,020 

,830

,710

,610

* ,360

,170

,980

,850

,750

,710

,690

* ,650

,660

,630

,510

,400

,230

,180

,160

,390

,490

,500

,530

,530

,590

,570

68,460

2,208

135,800

Aug.

,530

,520

,480

,460

,520

,560 

,520

,440

. ,350

,330

,400

,400

,410

* ,350

* ,330

,380

,390

,360

,430

,500

,500

,490

,500

,510

,530

,520

,540

,550

,540

,530

,550

45,400

1,465

90,050

Sept.

1,550

1,620

1,710

1,740

1,770

1,780 

1,830

1,880

2,020

2,160

*2,200

2,270

2,350

2,390

2,460

2,520

2,590

2,600

2,650

2,810

3,020

5,100

3,090

3,050

2,930

*2,740

2,710

2,700

2,680

2,660

71,580

2,386

142,000

Calendar year 1955: Max 313,000 Mln 322 Mean 6,255 Ac-ft 4,529,000

Water year 1955-56: Max 313,000 Mln 828 Mean 14,880 Ac-ft 10,810,000

* Discharge measurement made on this day.

* Expressed in thousands.

a No gage-height record; discharge estimated on basis of summation of upstream flows, and records 

for Feather River near Oroville.

e Stage-discharge relation Indefinite; discharge estimated.on basis of summation of upstream 

flows.

493801 O - 59 - 30
454 SACRAMENTO RIVER BASIN

Sacramento River at Verona, Calif.

Location. Lat 38"46'50", long 121 "36'10", In SE^ sec. 23, T. 11 N. , R. 3 E., on left bank 

0.8 mile southeast of Verona, 1 mile downstream from Feather River, 6.2 miles east of 

Knights Landing, and at mile 19.6 upstream from Sacramento.

Records available. May 1926 to September 1956 (1926-29, low-water periods only) in reports of Geological Survey. 1926-56 (1926-29, gage heights only) in reports of California Department of Water Resources, 

ge. Water-stage recorder. Datum of g£ 

Auxiliary water-stage recorder 16 mile

at datum of Corps of Engineers. Prior ^ .... ,., ,..,,,, <*^.^^-y « a , ci-c . aKB r^urut 

at site 19.2 miles downstream at datum 0.12 ft above mean sea level (datum of 1929).

Average discharge. 27 years (1929-56), 17,770 cfs (12,860,000 acre-ft per year)

Extremes. Maximum discharge during year, 71,400 cfs Dec. 23 (gage height, 39.81 ft)- minimum, 6,420 cfs Oct. 4.

1926-56: Maximum discharge, 79,200 cfs Mar. 1, 1940 (gage height, 41.20 ft); minimum 

daily, 304 cfs July 23, 24, 1931; maximum reverse flow, 16,800 cfs Dec. 4, 1950 backwater from American River.

1934-56: Maximum combined discharge of Sacramento River at Verona and Fremont weir 

about 315,000 cfs Mar. 1, 1940. '

Remarks.--Records excellent. Plow regulated by Shasta Lake beginning Dec. 30, 1943, and 

several other reservoirs and powerplants above station, and by bypassing for flood control. Many diversions above station for irrigation. When discharge exceeds about 

55,000 cfs, flow begins over Fremont weir (Just upstream) into Yolo bypass (see p 493) 

Elevation of crest of Fremont weir is 33.5 ft (datum of Corps of Engineers)

Cooperat ion. Fourteen discharge measurements furnished by California Department of Water 

Resources.

Rating table, water year 1955-56 (gage height, in feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Sept. 1-30)

11.5

14.0

18.0

22.0

6,200

10,300

18,400

27,300

26.0

30.0

35.0

40.0

36,500

46,500

59,000

71,900

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

£ 

3 

4 

5

6 

7 

8 

9 

10

11 

IE 

13 

14 

15

16 

17 

18 

19 

£0

El 

2£ 

23 

£4 

£5

E6 

£7 

E8 

£9 

30 

31

Total 

Mean 

Ac-ft

Oct.

7,020 

6,950 

6,720 

6.520 

6,520

6,530 

6,540 

6,600 

6,940 

6,830

6,890 

7,500 

*7,720 

7,830 

7,520

7,260 

7,160 

7,180 

7, '040 

6,900

6,950 

6,960 

6,960 

6,920 

6,720

*6,780 

6,820 

6,920 

6,960 

7,060 

6,980

216,000 

6,968 

428,400

Nov.

6.840 

6,920 

7,130 

7,250 

7,250

7,240 

7,140 

7,190 

7,220 

*7,260

7,220 

7,070 

7,060 

7,500 

8,380

9,170 

9,350 

9,550 

9,490 

9,620

9,510 

15,600 

18,800 

15;700 

* 13, 100

12,500 

11,200 

10, £00 

9,260 

8,950

278,050 

9,268 

551,500

Dec.

8,990 

8,970 

9,200 

8,720 

8,250

9,130 

20,000 

*28,100 

25,800 

21,500

20,200 

17,800 

* 15, 100 

15,600 

12,600

11,700 

11,300 

12,800 

22,900 

47,800

59,200 

62,400 

70,000 

*66,200 

65,600

65,400 

*65,800 

65,800 

64,700 

65 , 000 

61,200

1,041,540 

35,600 

+2,066

Jan.

59,700 

58,900 

58,200 

57,800 

57,600

58,200 

57,600 

57,500 

57,700 

57,800

57,600 

*57,400 

57,500 

58, £00 

61,400

65,500 

*66,500 

65,400 

64,000 

62,500

61,000 

60 , 100 

60,200 

60,200 

60,400

60,600 

60,600 

60,700 

60,100 

59,400 

58,400

+1,857.9 

59,930 

+5,685

Feb.

57,400 

56,400 

55,600 

54,800 

54,000

55,100 

*51,800 

50,500 

48,300 

45,200

42,100 

40,200 

37,800 

56,000 

54,700

53,600 

52,300 

*51,800 

50,600 

30,400

36,800 

44,300 

55,600 

60,200 

60^700

60,000 

59,000 

58,000 

57,400

+1^66.6 

47,120 

+2,711

Mar.

56.800 

56,000 

55,500 

54,700 

54,200

55,600 

52,400 

50,600 

48,400 

45,700

45,200 

40,900 

59,400 

58,500 

37,400

*36,400 

35,700 

55,100 

54,900 

54,900

55 , 100 

55,200 

55,400 

55,600 

35,900

56,500 

57, £00 

37,200 

*55,900 

54,400 

55.300

+1,295.6 

41,790 

+2,570

Apr.

32.800 

31,900 

30,200 

E8 , 400 

26,700

25,600 

25,200 

25,400 

25,900 

26,400

27,500 

28,900 

*29,200 

29,100 

28,600

27,900 

27,400 

26,800 

26,100 

25,900

26,100 

26,500 

26,700 

*27,300 

27,600

27,900 

29,100 

£9,800 

28,400 

26,500

831,800 

27,750 

+1,650

May

24,900 

24,200 

£4,800 

£6,400 

52,700

57,400 

39,700 

41,000 

41,200 

*41,200

40,800 

40,400 

40,400 

39,000 

56,600

34,500 

35,600 

54,100 

54,700 

55,100

35,900 

38,000 

40,100 

41,300 

42,000

41,000 

39,700 

58,100 

*55,700 

55,000 

51,500

+1,119 

36,100 

+2,220

June

50.900 

30,500 

29,800 

29,600 

29,500

27,900 

25,600 

24,100 

23,200 

22,100

21,500 

21,100 

*19,000 

18,100 

17,500

16,800 

16,600 

16,000 

15,800 

*15,700

15,600 

14,800 

14,700 

14,300 

13,800

15,200 

12,200 

11,600 

11.100 

11,100

583,700 

19,460 

+1,158

July

11.200 

10,800 

10,500 

10,300 

9,670

9,060 

8,790 

8,660 

8,650 

8,500

8,200 

7.990 

8,000 

8,520 

8,680

8,920 

9,010 

*9,010 

8,880 

8,860

8,660 

8,550 

8,500 

8,580 

8,550

8,520 

8,280 

8,520 

8,550 

8,380 

8,470

274,140 

8,845 

543,700

Aug.

8,570 

8,570 

8,180 

7,860 

7,7_80

7,880 

8,120 

8,100 

7,910 

7,990

8,040 

8,180 

8,210 

8,180 

8,150

8,080 

*8,040 

8,000 

8,130 

8, £50

8,300 

8,450 

8,650 

8,590 

8,610

8,610 

8,720 

8,740 

8,720 

*8,700 

8,7_50

256,640 

8,279 

509,000

Sept.

8.770 

8,860 

9,020 

9,060 

9,150

9,550 

9,650 

9,960 

10,400 

10,800

10,900 

11,200 

11,600 

11,800 

12,100

12,500 

12,700 

12,600 

*12,800 

15,100

15,600 

15.700 

15,600 

13,500 

12,900

* 12, 400 

12,100 

11,800 

11,700 

11,500

542,900 

11,450 

680,100

Calendar year 1955: Max 70,000 Mln 6,200 Mean 13,020 Ac-ft 9,424,000 

Water year 1955-56: Max 70,000 Mln 6,520 Mean 25,860 Ac-ft 18,770,000

* Discharge measurement made on this day.

* Expressed In thousands.
SACRAMENTO RIVER BASIN 

Sacramento weir near Sacramento, Calif.

455

Location.--Lat 38°36'25" ( long 121°33'15", on left bank of Sacramento River opposite center 

of Sacramento weir, 3.2 miles upstream from American River, 4 miles northwest of Sacramento, and at site 4.2 upstream from Sacramento.

Records available.--November to December 1950 (discharge for flood period published In WSP 

1137-P), October 1951 to September 1956 In reports of Geological Survey. February 1926 

to September 1934 (gage heights only) and October 1934 to September 1956 In reports of 

California Department of Water Resources.

Gage. Water-stage recorder and concrete weir crest. Gage Is set to datum of Corps of 

Engineers. Prior to October 1942, water-stage recorder or staff gage at downstream end 

of weir at same datum.

Extremes. Maximum dally discharge during year, 48,800 cfs Dec. 24; no flow during most of 

year.

1926-56: Maximum discharge, 118,000 cfs Mar. 26, 1928; maximum gage height, 32.92 

ft Nov. 21, 1950; no flow during all or most of each year.

Remarks. Crest of weir Is at elevation 25.0 ft and top of movable gates at 31.0 ft. Weir 

consists of 48 gates each 38.1 ft long. Plow over weir enters Yolo bypass by way of 

Sacramento bypass. Plow regulated by weir gates.

Cooperation.--Records collected and prepared In cooperation with California Department of 

Water Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

Dec.

0 

T5

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

19,600

48,800 

43,500

45,700

45,200

36,400

27,200

19,400

11,400

297,200

9,587

589,500

Jan.

6,550 

5,570

3,890

1,890

277

0

T>

0

0

0

0

0

0

0

0

Z,470

4,240

3,470

8ZB

0

0

0

0

0 

0

0

0

0

0

0 

0

28,965

954

57,450

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 48,800 Mln 0 Mean 814 Ao-ft 589,500

Water year 1955-56: Max 48,800 Mln o Mean 891 Ac-ft 647,000
456 SACRAMENTO RIVER BASIN

North Fork American River at North Fork Dam, Calif.

Location. --Lat 38°56'15", long 121°01'25", in SW^NVj- sec. 31, T. 13 N. , R. 9 E., on left 

bank 50 ft upstream from spillway of North Fork Dam, 2 miles upstream from Middle 

Fork, and 4 miles northeast of Auburn.

Drainage area. 343 sq mi.

Records available. --October 1941 to September 1956.

Gage . --Water-stage recorder. Datum of gage is 715.0 ft above mean sea level (levels by 

(Torps of Engineers).

Average discharge. --15 years, 852 cfs (616,800 acre-ft per year).

Extremes. Maximum discharge during year, 49,100 cfs Dec. 23 (gage height, 10.22 ft),

from rating curve extended above 22,000 cfs on basis of computed flow over spillway of 

dam; minimum, 32 cfs Nov. 1.

1941-56: Maximum discharge, that of Dec. 23, 1955; no flow Aug. 27-30, Sept. 2-11, 

1944, caused by operation of valves in North Fork Dam.

Remarks . Records good. Flow regulated by Lake Clementine (capacity, 12,800 acre-ft) 

formed by North Fork Dam. Storage in Big Reservoir and Lake Valley Reservoir (combined capacity, 10,300 acre-ft) above station. Lake Valley Canal diverts from North 

Fork of North Fork American River into Bear River basin for power development in Alia 

powerhouse of Pacific Gas and Electric Co.

Rating table, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

.4

.7

1.4

2.0

15

40

118

300

915

1,580

3.0 

4.0 

5.0 

7.0 

9.5

3,080

6,000

10,400

22,200

42,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

37

37

*37

37

37

37

37

37

37

40

40

40

40

37

37

37

37

37

37

37

37

40

40

37

37

37

37

40

40

40

37

1,174

37.9

2,330

Nov.

*34

34

40

46

37

37

34

34

34

34

34

34

46

83

75

67

108

91

87

118

521

315

182

154

118

108

99

99

108

108

2,919

97.3

5,790

Dec.

*218

315

20O

159

148

1,500

*1,080

531

643

652

448

384

346

308

279

286

477

880

7,880

9,310

5,940

34,600

41 . 600

14,700

6,550

9,880

7,920

4,740

3,340

2,540

*2,170

160,024

5,162

317,400

Jan.

1,980

1,950

1,710

1.560

3,950

3,230

2,530

2,530

2,140

2,080

2,030

1,900

1,950

5,110

12.800

10 , 500

5,510

3,920

3,100

2,830

2,880

2,960

5,690

3,500

4,660

5,160

4,950

3,850

3,020

2,480

2,160

114,620

3,697

227,300

Feb.

*1,870

1,670

,540

,440

,350

,250

,180

,110

,050

,000

965

945

915

895

855

805

785

785

785

1,180

,460

,530

.650

,160

,700

,520

,420

,310

,310

3 ,435

,325

7 ,230

Mar.

*1,230

1,200

1,200

1,220

1,260

1,150

1,070

1,040

1,040

1,030

1,020

965

945

935

925

925

985

1,050

1,110

1,090

,110

,160

,270

,390

,530

.610

,410

,280

,330

,420

,460

3 ,360

,173

7 ,120

Apr.

1,280

*1,120

1,030

995

1,060

1,140

1,260

1,320

1,410

1,660

1,460

1,270

1,110

1,020

945

955

995

1,070

1,210

1,470

1,700

1,730

2,000

2,020

2.040

2,030

1,670

1,420

1,310

1,390

41,090

1,370

81,500

May

*1.520

1,670

1,720

4.100

2,920

3,120

2,650

2,310

2,200

2,100

2,110

2,020

1,820

1,660

1,720

2,000

2,250

2,310

2,250

2,740

3,080

3,400

3,450

2,920

2,500

2,430

2,430

2,070

2,060

2,060

2,110

73,700

2,377

146,200

June

*1,880

1,820

1,910

1^920

1,500

1,350

1,340

1,400

1,440

1,440

1,410

1,300

1,250

1,160

1,040

945

895

925

1,000

845

785

765

795

775

706

661

679

670

634

556

33,796

1,127

67,030

July

489

*440

400

368

346

315

300

300

293

286

265

244

230

224

218

200

200

200

194

188

182

176

182

188

182

159

154

138

123

118

113 

7,415

239

14,710

Aug.

*104

104

99

95

95

91

91

83

83

83

79

75

75

75

71

71

71

71

71

71

71

71

67

67

6J5

63

63

63

63

63

63

2,375

76.6

4,710

Sept.

63

60

60

*56

56

56

56

56

56

56

56

56

56

56

56

56

56

50

60

67.

63

56

56

53

53

50

50

50

50

50

1,675

55.8

3,320

Calendar year 1955: Max 41,600 Min 32 Mean 870 Ac-ft 630,000

Water year 1955-56: Max 41,600 Min 34 Mean 1,403 Ac-ft 1,019,000

Peak discharge (base. 4.500 cfs). --Dec. 19 (8 p.m.) 14,300 cfs (5.73 ft); Dec. 23 (3 p.m.) 49,100 

cfs (10.22 ft); Dec. 26 (8 p.m.) 14,500 cfs (5.77 ft); Jan. 5 (4 p.m.) 4,910 cfs (3. 69 ft); Jan. 15 

(8 p.m.) 22,900 cfs (7.10 ft); Jan. 23 (4 a.m.) 7,290 cfs (4.33 ft); Jan. 26 (6 p.m.) 6,000 cfs 

(4.00 ft); Feb. 23 (4 a.m.) 4,840 cfs (3.67 ft); May 4 (2:30 p.m.) 4,750 cfs (3.64 ft); May 23 (1:30

a.m.) 4,410 cfs (3.53 ft). 

* Discharge measurement made this day.
SACRAMENTO RIVER BASIN 

Middle Fork American River at French Meadows, Calif.

457

Location.--Lat 39°07', long 120°28', In NE£ sec. 36, T. 15 N., R. 13 E., on left bank at

downstream end of French Meadows, 4.5 miles upstream from Chipmunk Creek and 14 miles

south of Cisco. 

Drainage area. 46.7 sq ml.

Records available. October 1951 to September 1956. 

Gage.--Water-stage recorder. Altitude of gage Is 5,050 ft (from Bureau of Reclamation

reservoir map).

Average discharge. 5 years, 177 cfs {128,100 acre-ft per year). 

Extremes. --Maximum discharge during year, 16,300 cfs Dec. 23 (gage height, 14.95 ft),

from rating curve extended above 1,400 cfs on basis of slope-area determination of peak

flow; minimum, 0.6 cfs Oct. 14.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, that of Oct. 14, 1955. 

Revisions.--Figures of maximum discharge for the water years 1953 and 1954 have been

revised to 3,310 cfs Apr. 27, 1953 (gage height, 8.84 ft) and 3,240 cfs Mar. 9, 1954

(gage height, 8.78 ft), superseding figures published In WSP 1285 and 1345, respectively 

Remsirks. Records good. No storage or diversion above station.

Revisions. Revised figures of discharge, in cubic feet per second, for high-water periods 

 in the water years 1953-54, superseding those published in WSP 1285 and 1345, are given

herewith:

Apr. 27, 1953............ 1,930

Mar. 9, 1954............ 2,460

Month

April 1953. .......................

Calendar year 1954. .............

Cfs-days

14,004

-

Maximum

1,930

2,460

Minimum

153 

2 2

2 3

.7

Mean

467

115

Runoff In 

acre-feet

27,780

83,000

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

1.7

1.8

1.9

2.0

2.1

2.2 

2.4

3.5

4.0

4.5

5.0

5.5

6.0

7.0

8.0

10.0

12.0

14.0

139

222

345

520

750

1,420

2,340

5,000

8,600

13,600

1.7

1.8

1.9

2.0 

2.2 

2.4 

2.6 

2.8 

3.0

1.6 

2.3 

3.1

3.5 

4.0 

4.5 

5.0 

5.5 

6.0 

7.0 

8.0

62

116

198

322

495

725

1,420

2,340

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

0.'

.9

.8

.8

.8

.8

.8

22.5

0.73

45

Nov.

H

is

.8

.9

.9

.8

.8

.9

.9

.9

.9

1.0

1.0

1.0

1.1

1.1

1.1

1.2

1.7

28

12

8.1

7.6

7.1

7.1

7.6

10

11

11

128.9

4.30

256

Dec.

11 

12

11

8.1

9.7

69

63

35

48

39

31

31

29

*28

28

30

45

52

310

742

875

8,000

*11.500

1,680

762

1,120

680

424

a350

a280

a230

27,332.8

882

54,210

Jan.

a200 

a!70

150

142

145

142

139

128

116

116

121

126

155

448

1.790

1,340

598

424

346

340

346

552

808

430

581

507

362

a300

a250

a220

a200

11,692

377

23,190

Feb.

a!80 

al60

a!50

*a!40

129

120

113

110

104

102

99

103

102

101

96

90

84

88

77

68

83

84

82

76

73

70

69

69

68

2,890

99.7

5,730

Mar.

£5 

69

73

75

72

66

65

68

72

74

75

70

70

75

75

87

108

126

142

133

157

186

230

289

337

340

276

270

319

349

337

4,750

153

9,420

Apr.

255 

219

198

206

251

301

365

399

471

499

382

310

260

230

211

226

253

295

388

503

576

660

715

760

690

584

471

416

413

471

11,978

399

23,760

May

535 

589

*672

*1.290

904

884

700

566

580

515

495

434

388

388

479

635

705

775

814

1,030

1,120

1,260

1,290

1,050

981

932

836

740

745

775

705

23,812

768

47,230

June

640 

670

740

630

495

*463

475

499

511

531

487

471

441

402

346

310

316

362

337

276

278

307

313

287

260

278

289

284

248

202

12,148

405

24,100

July

169 

146

130

119

111

102

101

102

96

89

76

68

63

57

55

53

52

50

46

42

40

36

38

50

50

40

32

26

22

20

18

2,099

67.7

4,160

Aug.

II 

16

*14

14

12

11

11

9.4

8.4

7.6

6.9

6.4

5.8

5.4

5.2

5.0

4.6

4.5

4.4

4. "4

4.0

3.9

3.4

3.4

3.4

3.2

3.1

3.0

2.8

2.8

LJ.

208.7

6.73

414

Sept.

e2.3

2.3

2.2

2.1

2.0

2.0

1.9

1.9

1.8

1.8

1.7

1.6

1.5

1.5

1.4

1.4

1.5

1.5

1.4

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.1

49.5

1.65

98

Calendar year 1955: Max 11,300 Mln 0.7 Mean 170 Ac-ft 122,900

Water year 1955-56: Max 11,300 Min 0.7 Mean 265 Ac-ft 192,600

Peak discharge (base. 1,400 cfsl.--Dec. 23 (4 a.m.) 16,300 cfs (14.95 ft); Dec. 26 (l p.m.) 1,560 

cfs (7.18 ft); Jan. 15 (7 p.m.) 3,650 cfs (9.09 ft); May 4 (2 a.m.) 1,400 cfs (6.98 ft); May 22 

(7:30 p.m.) 1,660 cfs (7.29 ft). * Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Rubicon River near Georgetown.
458 SACRAMENTO RIVER BASIN

Rubicon River near Georgetown, Calif.

Location. Lat 38°57'30", long 120°29'05", in SE£ sec. 23, T. 13 N., R. 13 E., on left 

bank 1.3 miles downstream from South Pork and 20 miles east of Georgetown.

Drainage area. 198 sq mi.

Records available. November 1909 to June 1914, May 1943 to September 1956. Published as 

"near Quintette" 1909-14.

Gage.--Water-stage recorder. Altitude of gage is 3,350 ft (from topographic map). 

Nov. 21, 1909, to June 8, 1914, at site 0.4 mile upstream at different datum.

Average discharge.--16 years (1910-13, 1943-56), 592 cfs (428,600 acre-ft per year).

Extremes.--Maximum discharge during year, 51,000 cfs Dec. 23 (gage height, 18.76 ft), from 

rating curve extended above 11,000 cfs on basis of slope-area determination at gage 

height 18.10 ft; minimum, 3.4 cfs Nov. 10, 11, 12, 13.

1943-56: Maximum discharge, that of Dec. 23, 1955; minimum, that of Nov. 10, 11, 

12, 13, 1955.

Remarks.--Records good except those above 11,000 cfs, which are fair. Plow regulated beginning in 1884 by Loon Lake (usable capacity, 8,000 acre-ft) on Gerle Creek, where 

most of stored water is diverted out of the watershed In Georgetown Divide ditch (see 

following page). Low summer flows augmented by release from streamflow maintenance 

dams built during 1950-56 on eight small headwater lakes (total controlled capacity, 

1,295 acre-ft).

Revisions (water years).--WSF 1285: 1951, 1943(M), 1945(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 15 Jan. 16 to.Sept. 30

1.1

1.2 

1.4 

1.7 

2.0 

2.5 

3.0 

3.5 

4.0

1.5 

4.2

27

46

88

142

214

320

5.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

640

1,160

2,780

5,490

10,000

17,000

28,000

43,700

1.6 

2.0 

2.5 

3.0 

3.5 

4.0

33

59

103

160

234

338

5.0

6.0

8.0

10.0

12.0

670

1,210

2,800

5,490

10,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

10 

9.2

8.8

8.4 

8.4

8.4

 8.0 

8.0

8.0

8.0

9.6

9.2

8.8

8.4

7.2

7.2

12

14

14

16

24

12

11

12

24

24

*12

10

9.2

8.8

345.8

11.2

686

Nov.

8.8 

9.2

5.0

3.9 

3.9

4.6

4.6

4.6

3.9

3.7

3.4

3.4

5.0

8.4 

8.8

9.6

14

14

23

79

445

126

74

56

46

43

46

71

69

64

1,260.8

42.0

2,500

Dec.

84 

79

70

59 

59

816

533

227

444

288

192

190

168

150 

146

148

259

324

1,730

3,080

2,570

22,900

37.900

5,980

2,670

3,820

2,350

1,550

1,190

944

840

91,760

2,960

182,000

Jan.

755 

696

628

584 

765

676

668 

592

548

532

*5S4

608

694

1,880 

6.010

5,280

2,320

1,630

1,360

1,340

1,360

1,920

3,070

1,620

2,270

1,900

1,400

1,160

952

855

751

45,408

1,465

90,070

Feb.

ffi

602

594

570

529

498 

474

447

444

438

450

447

*441 

417

356

382

364

364

351

385

396

432

385

359

338

348

321

359

12,787

441

25,360

Mar.

364 

343

385

414 

390

343

m390

405

402

354

361

377 

372

414

515

610

692

634

692

785

946

1,160

1,350

1,380

1^050 '946

1,120

1,240

1,220

20,356

657

40,380

Apr.

910 

742

654

646 

800

1,000

1,270 

1,360

1,540

1,680

*1,230

982

820

738 

684

765

900

1,090

1,420

1,790

2,010

2,080

2,280

2.460

2,220

1,900

1,460

1,300

1,300

1,570

39,601

1,320

78,550

r May

1,800 

1,970

2,200

4.290 

2,730

2,650

2,150 

1,720

2,070

1,7.20

1,660

1,420

1,230

1.200 

1,550

*2,100

2,290

2,470

2,550

3,090

3,530

3,890

3,980

3,980

3,060

3,040

2,820

2,330

2,440

2,600

2,590

77,120

2,488

153,000

June

2,350 

2,390

2.660

2,460 

1,780

1,650

1,780 

1,940

2,040

2,140

2,070

1,940

1,860

1,750 

1,440

1,250

1,280

1,510

1,610

1,150

1,160

1,290

1,390

1,380

1,200

1,170

1,310

1,330

1,220

1.000

49,500

1,650

98,180

July

810 

702

586

554

526

504

480 

543

522

526

444

382

326

312 

292

296

314

328

282

286

270

256

248

296

316

301

228

191

167

148

131

11,567

373

22,940

Aug.

w93

87 

34

84

79

74

*73

73

69

67

65

61 

61

58

56

54

54

52

50

50

49

48

47

46

45

43

42

42

41

1,965

63.4

3,900

Sept.

40 

39

38

37 

36

36

35

35

35

35

35

35

35

35

35

35

35

35

45

50

40

38

37

36

35

35

35

35

35

35

1,102

36.7

2,190

Calendar year 1955: Max 37,900 Mln 3.4 Mean 617 Ac-ft 446,600

Water year 1955-56: Max 37,900 Mln 3.4 Mean 964 Ac-ft 699,800

Peak discharge (base. 3.500 efa). Dee. 23 (11 a.m.) 51,000 cfs (18.76 ft); Dec. 26 (2 p.m.) 5,950 

cfs (10.25 ft); Jan. 15 (6:30 p.m.) 10,900 cfs (12.30 ft); Jan. 22 (12 p.m.) 4,890 cfs (9.65 ft) ; 

May 4 (3 a.m.) 5,130 cfs (9.80 ft); May 22 (10 p.m.) 4,970 cfs (9.70 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Aug. 17 to Sept. 30; discharge estimated on basis of records for 

Middle Pork American River at French Meadows.
SACRAMENTO RIVER BASIN 459

Georgetown Divide ditch above Pilot Creek, near Georgetown, Calif.

Location.--Lat 38°56'18", long 120 0 28'42", in SEij sec. 26, T. 13 N., R. 13 E., on left bank 

0.7 mile northeast of Uncle Toms Cabin and 20 miles east of Georgetown.

Records available.--May 1947 to September 1956. Prior to October 1954, published as 

Georgetown ditch above Pilot Creek near Georgetown.

Gage.--Water-stage recorder and wooden control. Altitude of gage Is 5,080 ft (from

topographic map). Prior to June 10, 1949, staff gage at same site at different datum.

Average discharge.--? years (1949-56), 6.28 cfs (4,550 acre-ft per year).

Extremes.--1947-56: Maximum daily discharge, 27 cfs Aug. 15-19, 1949, Sept 30, 1950; no 

flow for several months each year.

Remarks.--Records good except those for Oct. 1-7, which are fair. Ditch receives water 

from Loon Lake (capacity, 8,000 acre-ft) via Gerle Creek, Rubicon River basin, and at 

times from South Fork Rubicon River, and discharges into Pilot Creek. Flow Is then 

diverted from Pilot Creek about 8 miles downstream, for domestic and Irrigation purposes 

In vicinity of Georgetown (see Georgetown Divide ditch near Georgetown on following 

page).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

g20 

g20

g!9 gie

817

*g!6

816

16

16

15

15

15

14

14

13

13

11

7.1

*7.5

7.4

6.6

.6

9.1

7.1

7.2

o

0

*9.6

10

10

10

360.2

11.6

714

Nov.

9^5 

4.5

1.6

1.0

.7

.6

.3

0

0

0

0

o

0

*0

0

0

0

0

0

9

0

0

0

0

0

0

0

0

0

0

18.2

0.61

36

Dec.

0

0

0

Jan.

0

0

0

Feb.

-

0

0

0

Mar.

0

0

0

Apr.

(*)

0

0

0

May

(*)

0

0

0

June

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.5

6.5

6.3

14.3

0.48

28

July

5^8 

7.1

9.9

9.9

9.3

8.9

8.9

8.0

7.8

10

*11

12

13

12

15

16

16

16

14

11

15

15

15

15

11

18

16

17

18

18

18

404.6

13.1

803

Aug.

18

13.

19

19

19

19

19

*19

18

18

18

18

18

19

19

18

19

19

18

19

19

11

18

18

19

19

19

18

18

18

18

572

18.5

1,130

Sept.

 is. 18

19

19

19

19

19

19

19

19

19

19

20

20

20

19

19

19

20

19

19

18

18

18

18

18

18

18

18

18

563

18.8

1,120

Calendar year 1955: Max 24 Min 0 Mean 7.65 Ac-ft 5,540

Water year 1955-56: Max 20 Mln 0 Mean 5.28 Ac-ft 3,830

* Discharge measurement or observation of no flow made on this day. 

g Computed from graph based on outside gage readings.
4DU SACRAMENTO RIVER BASIN

Georgetown Divide ditch near Georgetown, Calif.

Location.--Lat 38°54'12", long 120°36'1C", near center of sec. 11, T. 12 N., R. 12 E., on 

left bank 1.0 mile downstream from intake and 12 miles east of Georgetown.

Records available.--February 1910 to January 1914, March 1947 to September 1956. Published 

as Pilot Creek ditch near Quintette 1910-14, and as Georgetown ditch near Georgetovm 

1947-54.

Gage.--Water-stage recorder. Altitude of gage is 4,170 ft (from topographic map). February 

1910 to January 1914 staff gage about 6 miles downstream at different datum.

Average discharge. 9 years (1947-56), 13.7 cfs (9,920 acre-ft per year).

Extremes.--1947-56: Maximum daily discharge, 37 cfs Dec. 22, 1955; minimum daily, 0.1 cfs 

Nov. 14, 1951, Nov. 16-18, 1952.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Ditch diverts from Pilot Creek, about 1 mile above station on Pilot Creek for domestic 

and irrigation use in vicinity of Georgetown (see also Georgetown Divide ditch above 

Pilot Creek, near Georgetown, preceding page).

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

22

20

20

20

20

*20

20

19

19

19

20

19

18

18

18

17

16

14

10

11

10

6.9

9.2

12

11

7.2

5.4

7.8

12

12 

12

465.5

15.0

923

Nov.

12

11

8.2

6.4

5.5

5.7

5.1

4.5

4-2

4.2

4.2

4.2

4.4

4.4

4.4

4.4

4.8

4.8

5.0

11

12

10

9.2

9.0

9.6

.6

.6

.6

.5

.4

205.9

6.86

408

Dec.

9.9

9.6

9.4

11

12

14

12

12

12

12

12

11

11

11

11

11

13

14

20

21

19

37

36

25

18

19

16

12

9.2

7.1

5.2

452.4

14.6

897

Jan.

4.4

3.4

2.6

2.2

3.8

3.1

3.0

2.8

2.5

*2.5

2.3

2.2

2.2

5.2

12

14

10

7.8

6.1

5.1

4.0

4.8

7.4

6.4

9.9

10

8.6

6.9

5.2

3.9

2.8

167.1

5.39

331

Feb.

2.1

1.8

1.5

1.2

1.1

1.0

.9

.7

.6

.6

.6

.5

*.5

.5

.1!

.4

.4

.6

.4

1.2

.9

.5

.8

.5

.7

.6

.4

.4

.4

22.2

0.77

44

Mar.

0.4

.4

.4

.4

.6

.5

.4

.4

.4

.4

.5

.5

.5

.5

.6

.6

.6

.7

.7

.8

.9

1.0

1.0

1.2

1.2

1.3

l!2

1.2

1.1

1.0

1.0

22.4

0.72

44

Apr.

1.0

.8

.8

.7

.6

.6

.5

.5

.9

*2.2

2.2

2.2

2.0

1.9

1.9

1.8

1.6

1.7

3.1

4.7

8.1

8.1

8.1

10

14

17

16

15

14

14

156.0

5.20

309

Mas

14

14

14

18

15

16

17

17

20

19

19

18

16

15

*14

14

13

12

11

11

15

19

18

17

16

16

15

14

14

15

17

483

15.6

958

June

17

17

17

16

16

16

17

18

18

18

*20

22

24

25

25

24

23

22

22

22

20

20

20

19

19

18

17

17

21

22

592

19.7

1,170

July

21

21

24

24

24

23

23

22

21

23

*24

24

25

24

26

26

26

24

20

23

24

25

25

26

25

27

26

25

26

27

27

751

24.2

1,490

Aug.

27

27

27

27

27

27

27

26

26

26

26

26

26

26

26

26

26

26

25

25

25

23

25

25

25

25

25

25

25

25

25

798

25.7

1,580

Sept.

25

24

25

25

25

26

26

26

27

27

27

28

28

29

29

29

29

29

31

31

30

a30

a29

a28

a27

a26

a25

a24

a23

a22

810

27.0

1,610

Calendar year 1955: Max 37 ' Min 0.6 Mean 17.2 Ac-ft 12,430

Water year 1955-53 : Max 37 Mln 0.4 Mean 13.5 Ac-ft 9,750

* Discharge measurement made on this day.

a No gage-height record; discharge Interpolated.
SACRAMENTO RIVER BASIN 

Pilot Creek near Georgetown, Calif.

461

Location. Lat 38°54'14", long 120°36'll", in NW£ sec. 11, T. 12 N., R. 12 E., on left 

bank 2.6 miles upstream from Mutton Canyon and 12 miles east of Georgetown.

Drainage area. 15.1 sq mi.

Records available.--January 1946 to September 1956. Records for station "near Quintette" 

191U-14 are not equivalent to those for this station as indicated in annual watersupply papers 1947-54.

Gage.--Water-stage recorder. Altitude of gage is 4,120 ft (from topographic map). Jan. 1, 

1946, to June 25, 1952, at site 300 ft downstream at datum 5.67 ft lower.

Average discharge. 10 years, 27.9 cfs (20,200 acre-ft per year).

Extremes.--Maximum discharge during year, 3,040 cfs Dec. 23 (gage height, 8.06 ft), from 

rating curve extended above 79 cfs on basis of slope-area determination of peak flow 

for flood of Nov. 18, 1950; minimum, 0.3 cfs Nov. 9, Sept. 10.

1946-56: Maximum discharge, 3,040 cfs Nov. 18, 1950, Dec. 23, 1955, from rating 

curve extended above 190 cfs and 79 cfs respectively, on basis of slope-area determination of peak flow for flood of Nov. 18, 1950; minimum, 0.3 cfs part of several days 

in 1949, 1955-56.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Some inflow and diversion above station (see records for Georgetown Divide ditch above 

Pilot Creek near Georgetown, p. 459 , and Georgetown Divide ditch near Georgetown, preceding page, which diverts about 1 mile above station).

Revisions. WSP 1215: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second) 

(Stage-discharge relation Indefinite Aug. 9-11)

Oct. 1 to Dec. 22 Dec. 23 to Aug. 11

1.4

1.5

1.6

1.7

1.2

2.0 

3.1

2.0 

2.3 

2.6 

2.9 

3.2

51

80

1.5

1.6

1.7

1.8 

2.0 

2.2 

2.4

0.4

.9

1.7

2.8

6.4

14

25

2.6 

3.0 

3.5 

4.0 

5.0 

6.0 

7.0

40

83

168

290

640

1,200

1,980

Aug. 12 to Sept. 30

1.2 0.4

1.3 .8

!.4 1.4

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.4

.4

.4

.4

.4

*.4

.4

.4

.4

.4

.4

.5

.5

.5

.5

.5

.6

.9

2.5

3.2

2.6

.9

1.3 

2.6

2.8

.9

.5

1.1

3.9

4.0 

4.2

38.9

1.25

77

Nov.

4.2

2.8

.6

.4

74

.4

.4

.4

.4

.4

.4

.4

.5

.9

4.0

4.0

5.3

6.2

8.4

5.6

~4.5 23

2.2 

1.6

1.6

1.4

1.2

1.1

1.0

.9

84.6

2.82

168

Dec.

2.4

2.1

1.6

1.4

270

45

18

8.4

18

9.0

5.1

4.0

3.2

2.6

2.5

2.5

10

60

160

200

150

900

1,800 

500

250

300

230

170

140

130 

120

5,247.8

169

10,410

Jan.

110

100

95

90

110

100

95

90

85

*81

77

75

79

144

277

305

187

155

134

126

120

143

223

166

255

258

204

160

138

121 

108

4,411

142

8,750

Feb.

96

88

83

77

73

70

66

62

59

56

54

52

*50

49

47

44

44

44

43

44

44

50

63 

49

45

44

43

43

43

1,625

56.0

3,220

Mar.

42

41

42

44

45

44

42

43

44

44

44

44

45

46

46

49

53

58

64

66

68

71

75 

79

82

83

82

79

78

77

78

1,798

58.0

3,570

Apr.

76

TT

67

66

64

64

66

64

66

*67

66

62

58

57

54

54

54

53

53

53

49

50

50 

47

44

56

47

44

40

37

1,699

56.6

3,370

May

36

34

36

82

84

87

90

88

102

100

100

95

87

79

*75

70

67

63

59

56

47

39

37 

34

32

30

28

26

25

22

1,828

59.0

3,630

June

18

IF

15

14

14

13

12

9.9

9.2

9.2

*7.0

3.6

1.5

1.5

1.5

1.5

1.4

1.4

1.3

1.3

1.2

1.1

1.1 

.9

_._§_

.6

.6

.6

.6

.6

160.2

5.34

318

July

0.7

.7

.7

.8

.8

.8

.8

»_

2!

5.

1.

74

.4

27.5

0.89

55

Aug.

0.4

.4

.4

.5

.5

.5

.4

.4

.4

.4

.4

.4

.5

.6

.7

.8

.8

.0

.0

.0

.0

.0

.0

.1 1.1

1.2

1.2

1.3

1.3

1.2 

1.3

24.2

0.78

48

Sept.

.1

.0

.1

.1

.1

.8

.0

.1

.1

.8

.4

74

.4

.4

.5

.5

.5

.5

.8

1.2

.9

.8

.8 

.7

.6

.8

.7

.6

.6

.6

22.9

0.76

45

Calendar year 1955: Max 1,800 Min 0.4 Mean 23.4 Ac-ft 16,940

Water year 1955-56: Max 1,800 Min 0.4 Mean 46.4 Ac-ft 33,660

.. 15 (7:30 p.m.) 

 s (4.07 ft).

Peak discharge (base, 150 cfs). Dec. 23 (time unknown) 3,040 cfs (8.06 ft); Jan 

440 cfs (4.47 ft); Jan. 23 (6 a.m.) 253 cfs (3.86 ft); Jan. 25 (10:30 a.m.) 311 cf:

* Discharge measurement made on this day.

Note. No gage-height record Dec. 15 to Jan. 9; discharge estimated on basis of recorded range in 

stage and records for Rubicon River near Georgetown.
462 SACRAMENTO RIVER BASIN 

Middle Fork American River near Auburn, Calif.

Location. Lat 38°55 r 05", long 121°00'20", in SE£ sec. 6, T. 12 N., R. 9 E., on left bank 

0.5 mile upstream from abandoned plant of Mountain Quarry Co. (revised), 1.9 miles upstream from mouth, and 3.5 miles northeast of Auburn.

Drainage area. 619 sq mi.

Records available.--October 1911 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 568.5 ft above mean sea level (river-profile 

survey). Prior to December 1930, staff gage at site half a mile downstream at different 

datum.

Average discharge.--45 years, 1,410 cfs (1,021,000 acre-ft per year).

Extremes. Maximum discharge during year, 79,000 cfs Dec. 23 (gage height, 33.9 ft), from 

rating curve extended above 32,000 cfs on basis of one float measurement at 68,200 cfs; 

minimum, 53 cfs Oct. 9, 10.

1911-56: Maximum discharge, that of Dec. 23, 1955; minimum, 20 cfs Sept. 6, 1931, 

Sept. 19, 1934.

Remarks. Records good. Small storage and diversions above station. See Remarks for 

Rubicon River near Georgetown.

Revisions (water years). WSP 861: 1928.

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Aug. 20 to Sept. 30)

1.7 

2.0 

2.3 

3.0 

4.0 

6.0

49

76

118

294

620

1,480

8.0

10.0

13.0

17.0

23.0

31.0

2,630

4,690

9,440

19,000

37,600

67,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

51

Total

Mean

Ac-ft

Oct.

55

55

*55

54

54

55

*55

54

54

55

58

62

62

61

59

56

55

55

55

56

66

69

68

71

67

64

71

78

79

75 

67

1,898

61.2

5,760

Nov.

*66

64

65

66

65

62

60

60

60

59

57

56

65

104

108

95

151

152

156

170

634

532

288

228

179

156

145

145

165

179

4,550

145

8,650

Dec.

*247

590

500

242

215

1,920

1,600

760

956

948

620

515

484

458

403

403

654

1,210

8,270

*11,000

7,420

*51,000

67.400

26,200

11,300

 15,500

12,300

7,140

5,350

3,800 

*3,650

242,573

7,825

481,100

Jan.

3,070

3,130

2,710

2.510

5,080

4,330

3,630

3,450

2,960

2,810

2,770

2,680

2,670

6,520

18,500

20.100

8,850

6,280

5,100

4,680

4,990

5,090

11,600

6,610

*9,160

9,290

7,960

6,250

5,120

4,280

3,700

185,660

5,989

368,500

Feb.

 5.210

2,860

2,650

2,500

2,360

2,190

2,040

1,940

1,800

1,740

1,670

1,640

1,610

1,560

1,480

1,360

1,550

1,310

1.500

1,640

1,560

1,680

3,210

2,270

1,980

1,880

1,720

1,640

1,720

------

55,850

1,926

110,800

Mar.

*1,610

1,590

1,640

1,720

1,810

1,650

1,530

1,500

1,510

*1,540

1,540

1,440

1,420

1,420

1.400

1,420

1,590

1,820

1,980

1,990

2,000

2,130

2,350

2,640

5,010

5.260

2,820

2,550

2,600

2,810

2,910

61,180

1,974

121,500

Apr.

2,560

 2,180

1,970

1,860

1,960

2,180

2,500

2,750

2,950

3,550

2,900

2,460

2,130

1,960

1.820

1,840

1,960

2,100

2,100

5,050

3,660

5,660

4,290

4,440

4.650

4,100

5,540

2,890

2,670

2,910

83,370

2,779

165,400

May

*5.220

3,570

3,700

8.550

6,320

6,530

5,720

4,930

4,990

4,820

4,590

4,090

3,670

3,310

3,420

4,150

4,870

4,990

4,910

5,680

6,550

6,950

7,320

6,790

5,680

5,580

5,480

4,310

4,350

4,440

4,750

157,790

5,090

313,000

June

*4,050

3,890

4,290

4.440

3,190

2,770

2,850

3,050

5,210

5,240

5,520

2,970

2,930

2,740

2,450

2,080

2,010

2,180

2,530

1,950

1,840

1,910

2,050

2,070

1,900

1,760

1,900

1,960

1,860

1.620

78,990

2,633

156,700

July

1.550

*1,180

1,050

968

924

892

848

880

880

872

796

708

648

592

574

550

554

571

564

518

504

480

461

454

532

526

480

403

354

318

288

20,719

668

41,100

Aug.

*258

235

215

205

192

187

184

177

165

160

158

153

149

145

138

154

152

128

124

122

120

120

118

115

106

104

105

101

100

100

97

4,545

147

9,010

Sept.

94

91

90

86

84

83

82

82

82

82

83

82

85

83

84

83

82

80

79.

115

U8

108

104

105

97

91

88

86

86

85

2,674

89.1

5,500

Calendar year 1955: Max 67,400 Mln 54 Mean 1,457 Ac-ft 1,040,000

Water year 1955-56: Max 67,400 Mln 54 Mean 2,458 Ac-ft 1,784,000

Peak discharge (base. 6.500 cfs). Dee. 19 (10 p.m.) 14,300 cfs (15.18 ft): Dec. 23 (6 a.m.) 

79,000 cfs (33.9 ft); Dec. 26 (4 p.m.) 23,600 cfs (18.65 ft)j Jan. 5 (4 p.m.) 6,530 cfs (11.37 ft)j 

Jan. 15 (9 p.m.) 34,900 cfs (22.21 ft); Jan. 23 (4 a.m.) 15,400 cfs (15.62 ft); Jan. 25 (4 p.m.) 

12,200 cfs (14.28 ft); May 4 (10 a.m.) 10,100 cfs (13.55 ft); May 23 (3 a.m.) 8,680 cfs (12.62 ft).

* Discharge measurement made on this day.
SACRAMENTO RIVER BASIN 463

Echo Lake conduit near Phillips, Calif.

Location. Lat 38°50', long 120°02', in NW^ sec. 6, T. 11 N., R. 18 E., on right bank 

0.5 mile downstream from intake and 2 miles northeast of Phillips.

Records available.--August 1923 to November 1956. August 1923 to November 1943 published 

as Echo Lake flume near Vade. September 1944 to November 1952 published as Echo Lake 

conduit near Vade.

Gage.--Water-stage recorder. Altitude of gage is 7,500 ft (from topographic map). Prior 

Uo July 16, 1929, staff gage at site 0.4 mile upstream at different datum.

Extremes.--1923-56: Maximum daily discharge, 28 cfs Sept. 9, 10, 1952; no flow during most 

of each year.

Remarks.--Records good. No flow except during periods for which discharge is published. 

Conduit diverts from Echo Lake in Truckee River basin into basin of South Fork American 

River for power and irrigation.

Cooperation.--Water-stage-recorder graph and two discharge measurements furnished by Pacific Gas & Electric Co., in connection with a Federal Power Commission project.

Discharge, in cubic feet per second, September to November 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30 

31

Total

Mean

Ao-ft

Calendar year : Max

Sept.

0

0

0

11

26_

25

25

26

25

25

26

*26

26

25

25

25

25

26

25

25

26

25

25

25

*26

25

25

24

23

22

663

22.1

1,320

Oct.

2119~

18

17

16

14

13

13

12

4.9

7.8

12

11

10

9.6

8.9

8.0

7.7

7.6

7.1

6.4

5.6

4.9

5.9

5.5

6.7

8.8

8.8

8.5

9.7

11

319.4

10.3

634

Nov.

11

11

11

10

10

9.7

9.6

9.5

9.2

9.0

9.0

8.9

3.7

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

121.6

4.05

241

Mln Mean Ac-ft

The season : Max - Mln - Mean - Ae-ft 2,200

Discharge measurement made on this day.
464 SACRAMENTO RIVER BASIN

Pyramid Creek near Phillips, Calif. 

(Formerly published as Medley Lakes Outlet near Phillips, Calif.)

Location (revised). Lat 38°50'30", long 120°07'30", in NE£ sec. 32, T. 12 N., R. 17 E., 

on left bank 1.2 miles downstream from main dam at Lake Aloha and 3.3 miles northwest 

of Phillips.

Drainage area. 4.2 sq mi, approximately.

Records available.--September 1922 to September 1956. Prior to October 1952, published as 

near Vade," and October 1952 to September 1955 as Medley Lakes Outlet near Phillips.

Gage. Water-stage recorder. Altitude of gage is 7,960 ft (from topographic map). 

Average discharge.--34 years, 17.8 cfs (12,890 acre-ft per year).

Extremes.--Maximum gage height during year, 5.59 ft Jan. 15, backwater from snow and ice 

(discharge not determined); minimum daily discharge, 2.2 cfs Nov. 12.

1922-56: Maximum discharge, 388 cfs Dec. 8, 1950 (gage height, 4.80 ft), from rating 

curve extended above 130 cfs by logarithmic plotting; no flow at times in some years.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Contents in Medley Lakes above station, 100 acre-ft on Sept. 30, 1955, 

and 160 acre-ft on Sept. 30, 1956.

Cooperation.--Water-stage-recorder graph and three discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions (water years).--WSP 1395: 1923(M), 1925.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

0.6

.7

.8

.9

1.0

1.2

1.8

2.8

4.4

6.8

9.7

17

1.4 

1.6 

1.8 

2.0 

2.5 

3.0

109

158

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

3.7

377

3.7

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.4

3.4

3.4

3.2

3.2

3.2

3.1

3.1

3.1

3.1

2.9

2.8

2.9

2.9

2.8

2.7

2.7

2.6

100.6

3.25

200

Nov.

2.6

*2.6

2.6

2.6

2.7

2.6

2.6

2.5

2.5

2.5

2.4

2.2

276

2.8

2.6

3.1

3.4

3.2

3.5

4.2

4.4

375

3.8

3.7

3.5

3.5

3.7

3.8

3.8

3.8

93.3

3.11

185

Dec.

5.0

4.4

4. * £? 

4T?

6.0

8.8

5.0

5.8

5.8

5.0

4.6

4.6

4.6

4.6

4.6

4.8

5.2

11

28

16

b35

b!55

91

40

47

105

81

55

39

30

27

847.2

27.3

1,680

Jan.

28

27

23

26

29

26

23

24

22

21

19

18

18

18

blip

b55

26

22

20

19

17

18

17

14

17

18

22

19

19

18

17

770

24.8

1,530

Feb.

IB- 16

IS

15

14

14

14

14

13

13

12

12

12

12

11

11

11

11

11

11

11

11

12

12

12

11

11

11

11

- -----

360

12.4

714

Mar.

11

TT

To- 10

il

11

11

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

1111

11

10

10

1111

10

10

320

10.3

635

Apr.

9.7

9.7

9.7

9.7

10

11

11

12

12

11

10

10

9.7

9.4

9.4

10

10

12

13

13

14

15

15

13

11

11

11

11

12

13

338.3

11.3

671

May

15

16

a!6

a!6

a 14

a!3

a!2

all

all

all

a!2

a!3

a!4

alS

a!6

alS

19

23

34

52

b70

b90

b!25

b!25

bllO

b!05

bllO

b85

b70

75

91

1,405

45.3

2,790

June

86

82

96

91

59

50

57

70

83

96

98

96

93

90

71

56

57

77

90

71

67

81

94

99

89

86

104

139

125

108

2,561

85.4

5,080

July

98

89

77

60

60

53

40

41

56

*67

64

58

53

50

48

47

46

50

53

47

54

55

62

75

84

83

*57

45

38

33

27_

1,770

57.1

3,510

Aug.

23

18

15

14

14

16

44

57

56

59

57

56

57

63

62

62

62

62

61

61

61

60

59

*59

58

58

58

57

57

57

56

1,559

50.3

3,090

Sept.

55

54

53

53

52

52

51

50

50

49

48

48

47

47

46

45

43

43

44

43

42

41

40

39

29

5.2

3.5

3.2

3.2

2.9

1,182.0

39.4

2,340

Calendar year 1955: Max 155 Min 2.2 Mean 15.6 Ac-ft 11,260

Water year 1955-56: Max 155 Min 2.2 Mean 30.9 Ac-ft 22,420

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and weather records.

b Stage-discharge relation affected by ice.
SACRAMENTO RIVER BASIN 465

Sliver Lake Outlet near Kirkwood, Calif.

Location. Lat 38°40', long 120°08', In SWij sec. 32, T. 10 N., R. 17 E., on right bank 

1,000 ft downstream from Silver Lake Dam and 3 miles southwest of Klrkwood.

Drainage area. 14.9 sq ml.

Records available. September 1922 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 7,200 ft (from topographic map).

Average discharge.--34 years, 33.7 cfs (24,400 acre-ft per year).

Extremes. Maximum discharge during year, 443 cfs Dec. 23 (gage height, 4.72 ft); minimum 

daily, 0.4 cfs Dec. 20, 21.

1922-56: Maximum discharge, 676 cfs Nov. 21, 1950 (gage height, 6.03 ft), from 

rating curve extended above 200 cfs by logarithmic plotting; no flow for many days in 

February and March 1948, Jan. 13, 14, 1954.

Remarks.--Records good except those for periods of ice effect, which are fair. Contents in 

Silver Lake were about 2,520 acre-ft on Sept. 30, 1955, and about 3,800 acre-ft on 

Sept. 30, 1956. Some water, in addition to that released through dam and over spillway, 

escapes from Silver Lake through porous rock formation.

Cooperation.--Water-stage-recorder graph and four discharge measurements furnished by Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.5 

.6 

.7 

.8 

.9

1.1 20

1.5 

2.0 

3.0 

4.0 

5.0

196

332

490

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

38

35

35

34

33

32

32

31

30

29

27

27

27

26

26

25

25

26

25

24

24

23

22

21

20

19

18

17

16

13

11.

791

25.5

1,570

Nov.

9.5 776"

*7.6

6.6

6.6

6.2

5.4

4.1

6.2

5.8

5.0

4.1

4.1

4.4

4.1

4.1

5.4

5.0

4.7

5.0

5.8

5.4

5.0

4.4

4.1

4.1

3.8

3.3

3.3

2.8

153.5

5.12

304

Dec.

b2,5

,

} b2.0

I

j

.

( bl,5

I

J

X

> bl.O

b.5

^_4

.4

32

302

353

?67

190

139

103

82

68

60

1,625.3

52.4

3,220

Jan.

55

54

53

52

51

51

51

50

50

49

48

48

47

47

47

49

51

51

51

51

51

50

50

49

49

49

48

47

47

47

47

1,540

49.7

3,050

Feb.

46

45

44

43

43

43

42

42

41

41

40

39

38

36

35

35

35

35

34

34

34

33

32

31

31

31

30

30

30

1,073

37.0

2,130

Mar.

30

30

29

28

28

28

28

27

27

27

b26

b26

25

25

25

25

25

25

24

54

25

25

25

25

25

27

27

28

28

29

30

826

26.6

1,640

Apr.

31

3T

31

31

31

31

32

32

34

36

37

38

38

38

39

39

39

39

39

40

41

43

91

145

169

159

128

104

73

62

1,721

57.4

3,410

May

89

123

159

234

192

155

129

105

101

89

82

75

64

61

W

130

183

218

234

262

300

322

340

338

325

318

312

293

289

294

304

6,200

200

12,300

June

297

T5T

14

15

35

68

104

143

177

203

257

196

127

104

109

109

117

133

171

170

152

154

160

162

160

147

154

184

180

138

4,267

' 142

8,460

July

85

55

27

23

30

35

38

47

56

52

*45

28

6.2

3.5

3.5

3.8

3.5

3.0

2.8

2.8

2.8

2.8

3.8

*3.5

7.1

10

2.0

1.8

1.7

TTe

1*3

589.2

19.0

1,170

Aug.

1.8

T7ff

1.8

2.0

2.0

2.1

2.0

2.1

2.1

2.1

2.1

2.0

1.8

2.0

2.1

2.2

2.2

2.2

2.1

2.2

2.2

2.2

2.4

2.6

274

2.4

2.4

2.4

2.4

2.4

2.4

66.9

2.16

133

Sept.

2.2

2.2

2.2

20~ 2.1

41

44

47

47

46

45

*47

50

51

53

51

57

64

66

65

66

65

66

66

70

*73

77

71

70

68

1,489.7

49.7

2,950

Calendar year 1955: Max 353 Min 0.4 Mean 28.5 Ae-ft 20,650

Water year 1055-56: Max 353 Min 0.4 Mean 55.6 Ao-ft 40,340

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
466 SACRAMENTO RIVER BASIN

Twin Lakes Outlet near Kirkwood, Calif.

Location. Lat 38°42', long 120°03', in SW£ sec. 18, T. 10 N., R. 18 E., on right bank 

500 ft downstream from main dam and outlet gate of Twin Lakes and 1 mile east of Kirkwood.

Drainage area. 12.4 sq mi.

Records available . September 1922 to September 1956 (October 1934 to September 1956, 

except May and June 1945, include flow over Twin Lakes spillway).

Gage.--Water-stage recorder and concrete control for outlet, and staff gage with once-daily 

readings for spillway. Altitude of gage is 7,900 ft (from topographic map).

Average discharge. 33 years (1922-44, 1945-56), 35.1 cfs (25,410 acre-ft per year), ineluding flow over Twin Lakes spillway.

Extremes. Maximum combined daily discharge during year for outlet and spillway, 281 cfs 

June 13; minimum daily, 4.6 cfs Sept. 7-24.

1922-56: Maximum combined daily discharge for outlet and spillway, 405 cfs Dec. 8, 

1950; minimum daily, 0.1 cfs Mar. 25-31, 1944.

Remarks. Records good except those for June 20, July 10, 11, 17, 18, which are poor. No 

diversion. Plow regulated by Twin Lakes, contents of which were 11,800 acre-ft on 

Sept. 30, 1955, and 19,600 acre-ft on Sept. 30, 1956. Plow over Twin Lakes spillway 

occurred June 11 to Sept. 26, and is included in table below.

Cooperation.--Water-stage-recorder graph and 22 discharge measurements furnished by Pacific 

Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

86

86

90

95

95

93

96

100

100

99

63

50

55

55

56

56 

56

56

56

56

56

56

55

55

56

62

64

64

64

64 

64

2,160

69.7

4,280

NOV.

64

51

*62

57

57

57

56

56

55

50

50

49

49

49

49

49 

49

36

29

30

20

19

39

40

31

24

24

20

15

T5

1,264

42.1

2,510

Dec.

15

15

15

28

39

19

6.4

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8 

6.8

6.8

6.8

7.1

7.5

13

14

9.2

7.9

7.9

7.1

6.0

6.0 e'.4

6.4

317.5,

10.2

630

Jan.

6.8

575

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8 

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.4

571

6.4

209.6

6.76

416

Feb.

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8 

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

197.2

6.80

391

Mar.

44575

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8 

6.8

7.1

TTT

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

211.4

6.82

419

Apr.

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

6.8

ft! 6.8

6.4

7.1

6.8

7.5

7.5

7.9

T75

7.5

7.1

7.1

7.1

7.5

208.6

6.95

414

May

8.8

9.6

11

9.6

9.6

9.6

9.6

9.6

6.8

6.8

574" 6.4

6.4

6.8

7.5

9.2 

10

12

12

7.9

75

126

165

234

257

263 2"5T

261

261

261

261

2,600.6

83.9

5,160

June

261

261

261

261

261

210

186

186

186

188

a!97

238

281

2TT

203

T59~ 158 

205

201

a!94

186

204

236

247

236

208

248

250

275

219

6,693

223

13,280

July

182

1ST

54

25

2T

60

102

119

124

al!2

»a!02

92

144

58

55

58 

a6B

a79

94

97

92

88

107

*107

93

96

76

54

42

38

37

2,603

84.0

5,160

Aug.

a37

37

35

37

40

19

a5.6

*5.6

5.6

5.5

7.2

*15

*21

a23

a23

a23 

a24

24

24

23

a27

*a27

33

*37

37

37

40

45

52

a57 

aBT

883.5

28.5

1,750

Sept.

»a58

a63

a63

a47

al9

aS.O

a4.6

3475

a4.6

a4.6

a4.6

*a4.6

a4.6

a4.6

a4.6

a4.6 

a4.6

a4.6

a4.6

a4.6

a4.6

a4.6

a4.6

34.6

a21

*a35

35

38

42

44

552.8

18.4

1,100

Calendar year 1955: Max 123 Mln 0.3 Mean 26.6 Ac-ft 19,230

Water year 1955-56: Max 281 Mln 4.6 Mean 48.9 Ao-ft 35,510

* Discharge measurement made on this day at outlet.

a No staff-gage record for spillway; discharge Interpolated or estimated on basis of observer 1 

notes and weather records.
SACRAMENTO RIVER BASIN 467

El Dorado Canal near Kyburz, Calif.

Location. Lat 38°45'52", long 120°19'09", in SW^SE^ sec. 29, T. 11 N., R. 15 E., on left 

bank 400 ft downstream from intake and 1.5 miles southwest of Kyburz.

Records available. October'1928 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 3,900 ft (from topographic map). Prior 

£b July 18, 1924., staff gage at site half a mile downstream at different datum.

Average discharge. 34 years, 108 cfs (78,190 acre-ft per year).

Extremes.--1922-56: Maximum daily discharge, 207 cfs Feb. 5,8, 1951; no flow at times.

Remarks.--Records good. Canal diverts from left bank of South Fork American River just 

below Silver Fork of South Fork; water used for power and irrigation.

Cooperation.--Water-stage-recorder graph and five discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

150

147

144

150

150

149

148

150

150

148

141

94

98

101

99

97

96

98

98

98

96

102

96

92

36

37~^ 5.6

50

50

48

46

3,164.6

102

6,280

Nov.

16

1.2

1.2

1.1

.6

.5

.3

45

74

70

67

66

68

71

71

73

77

87

94

106

-J? 132

66

82

75

70

68

69

65

57

1,747.9

58.3

3,470

Dec.

64

64

63

48

77

126

126

92

123

110

91

91

82

78

*78

77

90

96

122

133

136

12?

3

3

2.7

2.6

2.6

2.6

2.5

ITTs

2 5

2,113.0

68.2

4,190

Jan.

2.5

2.5

2.5

2.5

0

6.0

24

18

2.3

2.2

2.2

2.2

12

75

74

50

48

49

50

49

50

63

76

74

75

74

73

72

72

88

98

1,288.9

41.6

2,560

Feb.

98

110

134

136

136

136

136

137

138

137

136

136

136

136

159

133

130

119

115

115

115

116

116

115

116

116

116

128

138

3,669

127

7,280

Mar.

110

96

96

96

96

*96

96

95

113

138

145

143

144

144

147

127

128

128

128

128

128

128

129

130

129

129

130

150

157

156

155

3,915

126

7,770

Apr.

152

T50

*149

149

127

124

144

144

90- 88

125

121

107

147

140

108

107

107

117

112

144

144

145

145

147

143

140

141

140

146

3,943

131

7,820

May

153

155

154

142

158

140

138

141

148

147

148

144

142

142

144

147

149

*150

151

156

152

151

152

149

150

154

153

155

*160

166

16T

4,632

149

9,190

June

165

165

163

161

162

163

164

165

165

163

165

163

163

163

162

162

163

166

164

165

T6~§~ 168

166

166

165

168

168

168

168

168

4,945

165

9,800

July

167

166

166

169

169

167

167

167

168

167

166

166

166

167

167

167

168

168

169

168

167

168

168

168

165

165

167

166

166

167

168

5,178

167

10,270

Aug.

169 l59~

162

156

156

152

145

T58

155

152

149'

145

148

157

161

158

154

155

155

158

149

151

*148

153

152

150

149

152

155

158

158

4,787

154

9,490

Sept.

156

158

158

156

150

163

158

160

162

163

160

158

160

157

156

155

152

157

165

169

ISB" 170

162

157

156

168

163

158

158

158

4,786

160

9,490

Calendar year 1955: Max 172 Mln 0.3 Mean 123 Ac-ft 89,270

Water year 1955-56: Max 170 Mln 0 Mean 121 Ac-ft 87,610

Discharge measurement made on this day.
468 SACRAMENTO RIVER BASIN

South Fork American River near Kyburz, Calif.

Location. Lat 38°45'49", long 120° 19'39", in S¥^S¥^ sec. 29, T. 11 N., R. 15 E., on right 

bank beside U. S. Highway 50, 0.8 mile downstream from Silver Fork of South Fork and 

1.9 miles southwest of Kyburz.

Drainage area.--196 Sq mi.

Records available.--August to December 1907, October 1922 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 3,840 ft (from topographic map).

Average discharge.--34 years (1922-56), 399 cfs (288,900 acre-ft per year), combined flow 

of South Fork American River near Kyburz and El Dorado Canal.

Extremes.--Maximum discharge during year, 13,800 cfs Dec. 23 (gage height, 9.25 ft); minimum daily, 4.0 cfs Nov. 22, Dec. 4.

1922-56: Maximum discharge, 14,500 cfs Nov. 21, 1950 (gage height, 9.40 ft), from 

rating curve extended above 6,500 cfs on basis of contracted-opening determination of 

peak flow; minimum daily, 0.3 cfs Nov. 9-11, 1928.

Revisions.--The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

571 

611

651

671

791 

811 

831

Water 

year

1923 

1925

1927 

1928

1935 

1936 

1937

Date

May 16, 

Feb . 6 ,

May 16, 

Mar. 25,

May 25, 

May 13, 

May 14,

1923 

1925

1927 

1928

1935 

1936 

1937

Discharge 

(cfs)

3,040 

3,790

4,010 

6,700

3,040 

3,790 

3,900

Gage height 

(feet)

6.08 

6.45

6.57 

7.60

6.18 

6.54 

6.60

Remarks.--Records good. Flow at low and medium stages greatly regulated by four reservoirs since beginning of record (total usable capacity, 35,500 acre-ft). El Dorado 

Canal (see preceding page) diverts 0.5 mile above station.

Cooperation.--Water-stage-recorder graph and 14 discharge measurements furnished by the 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions. Revised figures of discharge, in cubic feet per second, for high-water period 

in the water year 1928, superseding those published in WSP 671, are given herewith:

1928 

Mar. 25............ 5,080

26............ 4,260

27............ 2,480

Month

Calendar year 1928. .............

Maximum

5,080

Minimum

.3

Mean

243

Runoff in 

acre-feet

177,000
SACRAMENTO RIVER BASIN 469

South Fork American River near Kyburz, Calif.--Continued

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 19-22)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 3O

.9 

1.0 

1.2 

1.6 

2.0 

2.5

3.9

6.0

8.8

12

21

45

84

174

3.5

4.0 

5.0 

6.0 

7.0 

8.0 

9.0

315

525

800

1,600

2,900

5,000

8,100

12,500

.9 

1.0 

1.2 

1.6 

2.0

11

14

18

26

59

124

2.5 

3.0 

3.5

250

440

685

1,030

2,020

3,460

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

9.1

8.8

8.8

10

8.8

8.8

8.8

9.7

9.1

9.4

9.7

8.8

9.1

7.6

6.2

6.2 

6.2

6.2

6.0

6.0

6.0

8.7

5.8

578

52

84

90

88

85

84

83

755.6

24.4

1,500

Nov.

*79

79- 80

74

74

76

72

38

5.5

5.2

5.0

5.0

5.8

5.0

5.0

6.0 

5.5

6.7

6.3

13

52

4.0

7.5

6.4

6.5

6.5

5.0

5.5

4.8

4.8

749.0

25.0

1,490

Dec.

6.8

5.8

5.8

4.0

775

117

43

5.2

20

5.5

5.5

5.2

5.0

6.0

*6.8

6.2 

8.5

9.2

193

439

*461

6,090

10,700

3,140

1,760

1,720

1,310

*958

782

680

625

29,131.0

940

57,780

Jan.

580

535

498

485

498

467

424

400

412

400

396

155

400

508

1,500

1,980 

1,120

863

752

746

724

798

1,170

776

863

807

702

641

565

512

472

21,402

690

42,450

Feb.

432

4T6

352

344

328

306

288

274

264

257

254

257

257

250

235

208

226

229

214

211

211

217

226

211

193

190

180

164

151

_

7,345

253

14,570

Mar.

173

202

211

217

223

*199

202

202

196

180

178

162

164

168

180

214 

271

313

356

340

380

432

512

630

707

724

615

590

674

712

680

11,007

355

21,830

Apr.

545

458

*416

412

490

585

690

746

926

974

734

625

575

485

462

550 

580

646

*770

990

1,070

1,200

1,360

1,480

1,450

1,280

1,010

878

856

942

24,185

806

47,970

May

1,080

1,280

*1,490

2,590

1,760

1,630

1,430

1,200

1,430

1,170

1,140

1,010

886

870

1,070

1,400 

*1,580

1,760

1,830

2,220

2,690

3,180

3,460

3,260

3,100

3,070

2,830

*2,530

2,550

2,660

2,690

60,846

1,963

120,700

June

2,550

2,390

2,370

2,140

1,720

1,680

1,770

1,910

2,020

2,140

2,100

2,100

1,910

1,840

1,540

1,320 

1,340

1,510

1,480

1,280

1,270

1,370

1,450

1,440

1,300

1,260

1,300

1,410

1,330

1,080

50,320

1,677

99,810

July

806

T02

570

467

449

444

458

485

*508

485

424

364

282

220

214

202 

199

199

199

208

176

211

260

344

250

*285

157

93

68

48

33_

9,860

318

19,560

Aug.

22IB"

12

11

10

11

10

10

1111

11

1011

11

10

11

10

10

10

10

10

10

*10

10

10

10

10

10

1111

12

341

11.0

676

Sept.

13

13

13

12

10

14

12

13

14

13

13

13

*13

13

13

13 

13

14

29

30

16

13

13

13

*13

*18

14

13

13

13

430

14.3

853

Calendar year 1955: Max 10,700 Min 3.4 Mean 230 Ac-ft 166,400

Water year 1955-56: Max 10,700 Min 4.0 Mean 591 Ac-ft 429,200

Peak discharge (base, 2,000 cfs). Dec. 23 (9 a.m.) 13,800 cfs (9.25 ft); Jan. 15 (11:30 p.r

3,330 cfs (5.93 ft); May 4 (7 a.m.) 2,990 cfs (5.72 ft); May 23 (9 p.m.) 4,320 cfs (6.46 ft).

* Discharge measurement made on this day.

493801 O - 59 - 31
470 SACRAMENTO RIVER BASIN

Alder Creek near White Hall, Calif.

Location. --La t 38°45'19", long 120°22'17", in NE&SEi sec. 35, T. 11 N., R. 14 E., on right 

bank 0.9 mile upstream from mouth and 2.2 miles southeast of White Hall.

Drainage area. 22.8 sq mi.

Records available. --October 1922 to September 1956 (include diversions by pipeline).

Gage. --Water- stage recorder. Altitude of gage is 3,840 ft (from topographic map). Prior 

u> July 23, 1924, staff gage at same site and datum.

Average discharge. 34 years, 37.5 cfs (27,150 acre-ft per year).

Extremes (creek only) .--Maximum discharge during year, 5,500 cfs Dec. 23 (gage height,

8.40 ft, from floodmarks), from rating curve extended above 500 cfs by logarithmic plotting; minimum daily, 0.1 cfs Oct. 3 to Nov. 19, Nov. 22 to Dec. 4, Dec. 13-16.

1922-56: Maximum discharge, that of Dec. 23, 1955; no flow at times during several 

years .

Revisions. The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

611

791

811

861

901

931

961

981

1041

Water 

year

1925

1935

1936

1938

1940

1941

1942

1943

1945

Date

Peb

Apr

Peb

Dec

Mar

Dec

Jan

Jan

Peb

6,

8,

22,

11,

26,

27,

27,

21,

2,

1925

1935

1936

1937

1940

1940

1942

1943

1945

Discharge 

(cfs)

950

418

498

1,140

1,300

' 330

1,040

1,880

1,580

Gage height 

(feet)

4.95

3.27

3.45

4.50

4.70

2.97

4.34

5.4

5.05

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Records (except extremes) include computed flow in feeder pipeline that diverted just 

above station into El Dorado Canal Oct. 2 to Dec. 22, Jan. 1-7, 10-16, Jan. 31 to 

Peb. 2, Peb. 7 to Apr. 10.

Cooperation. Water-stage-recorder graph, six discharge measurements on Alder Creek, and 

gage readings of feeder pipeline furnished by Pacific Gas & Electric Co. in connection 

with a Federal Power Commission project.

Revisions (water years).--WSP 1215: 1928(M). Revised figures of discharge, in cubic feet 

per second, for the water year 1929, superseding those published in WSP 691, are given 

herewith:

1929-Con. 

Feb. 13............. 7.5

14............. 7.5

15............. 7.5

1929

g

12........

9 5

8

e

....... e

Month Maximum

92

Minimum

.2

Mean

14.5

Runoff in 

acre-feet

10,500
SACRAMENTO RIVER BASIN 

Alder Creek near White Hall, Calif .--Continued

471

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

£0

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

"79" 0.4

1.0 ITS

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

30.3

0.98

60

Nov.

 1.0

ITS

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1

5.8

27*

2. 

2.

2.

2.

2.

2.4

2.4

2.4

47.5

1.58

94

Dec.

2.4

tt

2.4

2.4

2.5

56

33

18

a23

a!7

a!6

a!5

a!5

»#3.1

3.1

3.1

17

17

138

302

248

1,350

3.440 

895

552

764

516

325

219

165

136

9,298.4

300

18,440

Jan.

122

106

94

86

91

81

76

73

63

62

60

Iff

63

131

518

546

355

238

190

183

157

244

420 

274

370

352

257

187

153

135

117

5,836

188

11,580

Feb.

-§5 107

88

84

79

73

72

70

64

63

61

59

57

57

55

49

51

49

46

46

45

45

49 

47

44

43

41

38

5s

1,715

59.1

3,400

Mar.

37

5s

40

42

44

#41

39

39

39

40

42

41

44

46

46

48

55

63

70

74

79

84

95 

108

121

126

TT5

116

119

121

123

2,139

69.0

4,240

Apr.

112

101

90

84

84

86

93

99

106

113

107

98

90

85

79.

82

84

88

#94

106

112

124

136 

145

149

161

m

135

128

122

3,237

108

6,420

May

121

126

*135

425

35?

313

278

228

254

216

211

190

165

142

136

#136

136

140

138

140

144

149

149

133

121

111

98

#85

79

76

72

5,199

168

10,310

June

66

ST

59

53

48

44

41

39

36

34

32

29

27

27

26

24

22

20

19

19

16

16

15 

14

13

13

12

11

10

8.9

854.9

28.5

1,700

July

8.9

77Y

8.3

8.3

7.7

7.1

6.5

6.5

5.4

5.4

5.4

4.9

4.9

4.4

4.4

4.0

3.6

3.6

3.4

3.4

2.9

2.9

2.7 

2.5

2.5

*2.5

2.3

2.1

1.9

1.9

1.6

139.8

4.51

277

Aug.

1.8

TT§

1.8

1.8

1.8

1.8

1.6

1.8

1.5

1.6

1.5

1.5

1.4

1.3

1.2

1.1

1.1

1.1

1.1

1.1

1.1

#1.1

1.1 

1.0

1.0

1.0

.9

75

1.0

.9

.9

40.6

1.31

81

Sept.

~T5 0.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

1.2

al.5

al.3

al.O

a. 9 

a. 9

.8

.8

.8

.8

a. 8

a. 8

26.0

0.87

52

Calendar year 1955: Max 3,440 Mln 0.3 Mean 47.5 Ac-ft 34,360

Water year 1955-56: Max 3,440 Mln 0.4 Mean 78.0 Ac-ft 56,650

ge (base. 120 ofs. creek only). Dee. 6 (11 a.m.) 156 cfs (2.41 ft): Dec. 23 ( 

s (8.40 ft); Dec. 26 (11 a.m.) 1,120 ofs (4.46 ft): Jan. 15 (7 p.m.) 1,060 cfs 

. 22 (12 p.m.) 602 cfs (3.64 ft); Jan. 25 (lO p.m.) 470 ofs (3.40 ft)j Apr. 26

r*.\t MBIT 4. (S n.m.^ iKCl r<fa f* *B f^\ .

23 (2:30

(2 a.m.)

Peak discharge 

a.m.) 5,500 cfs

(4.37 ft); Jan. e.e, (±e p.m.; bue crs io.b« re;; Jan. 

171 cfs (2.61 ft); May 4 (5 p.m.) 460 cfs (3.38 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

a Ho gage-height record; discharge estimated on basis of recorded range In stage, weather records, 

and normal recession.
472 SACRAMENTO RIVER BASIN

Sliver Creek at Union Valley, Calif.

Location. Lat 38"51'55", long 120°25'35", in SE^ sec. 20, T. 12 N., R. 14 E., on right 

bank 0.6 mile downstream from confluence of Big Silver Creek and Jones Fork Silver 

Creek, near lower end of Union Valley, and 6.6 miles north of Riverton.

Drainage area . 82.7 sq mi.

Records available. October 1924 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 4,530 ft (from topographic map).

Average discharge.--31 years (1924-27, 1928-56), 215 cfs (155,700 acre-ft per year).

Extremes.--Maximum discharge during year, 15,800 cfs Dec. 23 (gage height, 18.85 ft),

from rating curve extended above 2,200 cfs on basis of slope-area determination at gage 

height 16.6 ft; minimum, 5.2 cfs Oct. 4.

1924-56: Maximum discharge, that of Dec. 23, 1955; minimum, 1.9 cfs Aug. 27, 28,

Remarks.--Records good except those for periods of doubtful or no gage-height record, 

which are fair. No storage or diversion above station.

Revisions (water years). WSP 1215: 1928(M), 1938(M), 1943(M).

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

1.5 

2.0

18

38

82

165

387

704

1,580

3,500

6,100

11,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

5.4

5.4

5.4

Sal

5.4

*5.6

5.6

5.6

5.6

5.8

6.3

6.3

5.8

5.6

5.4

5.4

5.4

5.4

5.6

5.8

6.0

5.8

5.8 

5.8

5.6

6.3

6.6

6.6

6^1

6.6

6.3

180.3

5.82

358

Nov.

6^3

6.3

6.6

6.6

7.2

7.5

7.5

6.9

6.6

6.3

6.3

6.3

6.9

9.2

8.8

8.8

10

12

19

24

11

38

28 

24

22

21

22

29

29

29

498.1

16.6

988

Dec.

36

32

28

22

29

221

199

93

149

101

69

66

*62

58

59

61

98

125

480

704

696

8,060

11,100 

aS,200

al,100

al,250

a900

a650

aSOO

a440

a400

29,988

967

59,480

Jan.

a360

a360

a320

*303

355

332

315

287

272

274

283

289

304

672

2.240

1,920

1,110

625

532

561

591

923

1,500 

733

1,240

872

643

542

470

434

, 395

20,057

647

39,780

Feb.

365

355

348

342

330

310

298

289

276

274

272

274

274

265

250

238

238

234

229

225

223

236

240 

223

209

209

203

199

199 -

7,627

263

15,130

Mar.

,195j

203

209

213

203

203

207

203

213

219

217

209

209

217

217

236

278

318

350

322

348

387

439

526

588

601

485

*464

545

581

548

10,153

328

20,140

Apr.

434

371

338

335

392

485

608

629

712

761

529

439

390

363

350

371

409

467

591

753

788

844

952 

960

860

742

591

542

526

625

17,157

572

34,030

May

719

816

919

1.940

1,120

1,060

880

727

952

769

731

643

571

554

734

989

1,010

1,040

1,060

1,240

1,360

1,490

1,530 

1,270

1,260

1,240

1,110

960

984

1,030

964

31,672

1,022

62,820

June

916

940

1.040

872

654

646

727

757

772

808

738

704

650

598

470

434

470

545

500

387

409

462

453 

425

368

395

398

376

342

280

17,536

585

34,780

July

242

219

d!90

d!78

d!74

d!65

d!56

d!65

d!38

d!29

dl!2

d!04

*99

95

90

86

86

86

76

73

70

66

82 

76

82

66

56

48

43

38

34

3,324

107

6,590

Aug.

11

29

27

27

25

24

23

22

20

20

19

18

18

17

16

*16

16

16

16

15

15

14

14 

14

14

13

12

¥2

12

12

12

559

18.0

1,110

Sept.

11

11

11

10

10

10

10

10

10

10

10

10

10

10

10

10

10

1^6

14

15

12

11

11 

10

10

10

10

10

10

_ __ 10_ _

315.6

10.5

626

Calendar year 1955: Max 11,100 Mln 5.2 Mean 218 Ac-ft 157,900

Water year 1955-56: Max 11,100 Mln 5.2 Mean 380 Ac-ft 275,800

Peak discharge (base, 960____ 

9.88 ft); Jan. 22 (12 p.m.) 2,420 cfs (7.43 ft 

10:30 p.m.) 1,260 cfs (5.32 ft); May 4 '

i,.--Dec. 23 (5 a.m.) 15,800 cfs (18.85 ft); Jan. 15 (8 p.m.) 4,180 cfs 

... - ,_ .. .. > Jan> 25 (i0 . 30 a-m- ) 1,810 cfs (6.41 ft); Apr. 22 

. . __,, .._ . _....., 2,350 cfs (7.32 ft); May 9 (6 a.m.) 1,000 cfs

4.75 ft); May 22 (9:30 p.m.) 2,240 cfs (7.13 ft) 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for station near Placerville. 

d Doubtfu?. gage-height record; discharge computed from reconstructed gage-height graph based on 

corded graph and records for station near Placerville.
SACRAMENTO RIVER BASIN

South Fork Silver Creek near Ice House, Calif.

Location. Lat 38°49'18", long 120°21'37", in SE^SW^ sec. 1, T. 11 N., R. 14 E., on left 

bank 0.3 mile upstream from Peavine Creek, 0.9 mile northeast of Ice House, and 

5.9 miles northeast of Riverton.

Drainage area. 28.4 sq mi.

Records available .--October 1924 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 5,300 ft (from topographic map).

Average discharge.--32 years, 75.0 cfs (54,300 acre-ft per year).

Extremes.--Maximum discharge during year, 3,940 cfs Dec. 23 (gage height, 6.71 ft), from 

rating curve extended above 540 cfs on basis of slope-area determination at gage height 

6.69 ft; minimum, 1.3 cfs Oct. 1-4, 6-10, 16-19.

1924-56: Maximum discharge, that of Dec. 23, 1955; minimum, 0.1 cfs Aug. 21 to 

Sept. 6, 1931.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

No storage or diversion above station.

Revisions (water years).--WSP 1395: 1928, 1938.

Rating table, water year 1955-56 (gage height, in feet, 

and discharge, in cubic feet per second)

0.3 

.4 

.5

0.8

2.9

6.8

13

28

1.6 

2.0 

3.0 

4.0 

5.0 

6.2

140

232

520

950

1,630

3,040

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.3

1.3

1.3

1.3

*1.5

1.3

1.3

1.3

1.3

1.3

1.5

1.5

1.5

1.5

1.5

1.3

1.3

1.3

1.3

1.5

1.5

1.7

1.7

1.7

1.5

1.7

1.7

1.7

1.7

1.7

1.7

45.7

1.47

91

Nov.

1.

1.

1.

1.

1.

1.

1 . !

1.

1.

1.

1.

~1.

1.9

1.9

4.6 

8.0

8.0

9

11

20

To

7

6

5.5

5.5

6

*6.8

8.6

9.2

152.0

5.07

301

Dec.

9.2

8^6

11

12

15

60

50

25

40

30

25

*21

16

15

15

16 

2021'

44

63

88

1,300

2.780

636

300

276

206

166

147

134

120

6,669.8

215

13,230

Jan.

110

102

93

86

*80

92

85

77

77

11

76

76

81

156

417

499 

276

201

171

171

169

259

327

203

230

186

160

151

136

126

114

5,061

16.6

10,040

Feb.

106

104

92

92

86

82

78

74

72

70

68

70

68

67

62

62 

63

61

61

60

55

55

60

60

60

55

55

55

_ ___|i

2,004

69.1

3,970

Mar.

49

50

51

52

49

ii

54

50

50

50

51

46

50

49

49

52

61

71

80

80

83

92

100

126

147

155

*136

132

149

162

155

2,525

81.5

5,010

Apr.

128

106

93

90

106

134

166

186

208

232

175

142

124

110

102

108 

116

130

160

218

232

258

300

302

292

242

189

180

175

203

5,207

174

10,330

May

240

284

310

530

346

310

271

237

276

242

230

210

194

184

230

326 

357

370

393

457

524

563

591

516

502

499

471

426

426

444

457

11,416

368

22,640

June

435

426

468

426

331

315

*345

382

390

393

370

357

336

313

250

218 

232

261

263

203

203

227

237

227

203

208

220

215

201

175

8,830

294

17,510

July

149

132

116

108

102

98

97

108

102

102

86

76

*64

60

58

58 

58

61

54

54

54

54

68

147

100

70

53

43

38

34

11

2,435

78.5

4,830

Aug.

SI

23

20

19

18

17

16

16

16

15

15

15

14

13

13

*12

11

10

9.8

9.8

9.2

9.2

8.6

8.0

8.0

7.4

6.8

6.3

6.3

5.8

JLl

390.6

12.6

775

Sept.

5.4

5.4

5.0

5.0

4.6

4.6

4.6

4.2

4.2

4.6

4.6

4.6

4.6

4.6

4.2

4.2 

3.8

3.8

4.6

Zil

6.8

5.8

5.0

4.6

4.2

3.8

3.8

3.8

3.2

3.2

138.2

4.61

274

Calendar year 1955: Max 2,780 Min 1.2 Mean 65.4 Ac-ft 47,330

Water year 1955-56 : Max 2,780 Min 1.3 Mean 123 Ac-ft 89,000

Peak discharge (base. 540 cfs). Dec. 23 (6 a.m.) 3,940 cfs (6.71 ft); Jan. 15 (7 p.m.) 733 cfs 

(3.54 ft); Jan. 22 (10 p.m.) 510 cfs (2.97 ft); May 4 (5:50 a.m.) 587 cfs (3.18 ft); May 23 (8:30 

p.m.) 742 cfs (3.56 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 19-27, Dec. 4-11, Feb. 2O-27; discharge estimated on basis of 

recorded range in stage and records for Silver Creek at Union valley.
474 SACRAMENTO RIVER BASIN

Silver Creek near Placerville, Calif.

Location. Lat 38°47'30", long 120°35'15", in NE^ sec. 24, T. 11 N., R. 12 E., on right

 bank 0.2 mile upstream from mouth and 12 miles northeast of Placerville.

Drainage area. 176 sq mi.

Records available.--December 1921 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,070 ft (from topographic map). Prior 

~^Eo Oct. 19, 1930, at site 400 ft downstream at different datum.

Average discharge.--34 years (1922-56), 413 cfs (299,000 acre-ft per year).

Extremes. Maximum discharge during year, 27,500 cfs Dec. 23 (gage height, 14.50 ft),

 from rating curve extended above 3,900 cfs on basis of slope-area determination at 

gage height 14.25 ft: minimum daily, 23 cfs Oct. 16-18. 1921-56: Maximum discharge, that of Dec. 23, 1955; minimum, 5.5 cfs Sept. 18, 1934.

Remarks.--Records good. No storage or diversion above station.

Revisions (water years).--WSP 1215: 1928(M), 1938, 1940(P), 1943(P), 1945(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.4 

1.7 

2.0 

2.5 

3.0 

4.0

Oct. 1 to Dec. 23

23

41

68

142

258

616

5.0

6.0

8.0

10.0

12.0

14.0

Dec. 24 to Sept. 30

1,120

1,780

3,950

7,750

14,000

24,200

1.8 

2.2 

2.6 

3.0 

3.5

33

71

124

190

316

4.0 

5.0 

6.0 

8.0 

10.0

530

1,060

1,760

3,950

7,750

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

IS

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

AO-ft

Oct.

24 

24

24

24

24

24

24

24

24

24

24

24

24

II

23

24

24

24

24

24

24

24

24

25

25

24

24

24

744

24.0

1,480

Nov.

f

24

24

24

26

26

25

24

24

24

24

26

30

30

34 

35

37

54

60

199

*88

68

56

48

50

49

51

57

57

1,312

43.7

2,600

Dec.

90 

83

68

550

362

215

326

250

164

140

126

119

111

122 

250

361

1,390

1,650

1,280

13,000

21.500

5,720

2,590

3,040

2,300

1,530

*1,220

1,060

945

60,698

1,958

120,400

Jan.

890 

830

745

715

923

840

80S

755

685

675

675

670

115

1,470

4,120

4.450 

2.TI5

1,510

1,250

1,250

1,360

1,680

3,370

1,860

2,780

2,410

1,810

1,480

1,240

1,110

1,010

46,211

1,491

91,660

Feb.

|1|

830

802

760

725

685

660

620

610

595

590

585

570

535

490 

515

480

480

490

476

520

625

525

485

471

453

440

448 -

17,845

595

34,200

Mar.

426 

*444

453

476

505

435

440

448

458

462

466

455

448

458

448

480 

550

625

685

670

695

750

835

945

1,040

! IIQ

95g

901

984

1,050

1,050

20,128

649

39,920

Apr.

896 

780

715

690

115

852

1,010

1,060

1,140

1,500

1,010

884

786

755

700

720 

750

850

950

1,190

1,250

1,250

1,480

1.500

1,460

1,310

1,080

994

945

1,020

30,027

1,001

59,560

May

1.130

1,300

1,370

2j9pp

1,950

1,880

1,660

1,420

1,780

1,540

*1,470

1,570

1,220

1,150

1,250

1,570 

1,660

1,680

1,650

1,890

2,130

2,270

2,400

2,100

1,930

1,900

1,830

1,540

1,580

1,610

1,580

52,690

1,700

104,500

June

1,510 

1,460

1.600

1,510

1,150

1,070

1,170

1,240

1,270

1,500

1,240

1,170

1,150

1,070

884

770 

808

879

956

700

710

775

808

770

700

675

725

700

640

...141

29,935

998

59,380

July

453 

401

*348

327

313

294

278

294

281

278

246

228

208

194

186

181 

181

181

172

164

162

156

169

200

228

174

151

132

118

110

10*

6,914

223

13,710

Aug.

II

84

82

81

77

75

72

71

70

69

68

66

65

62

61 

60

60

59

59

58

56

54

55

52

51

52

50

50

50

£3.

1,997

64.4

3,960

Sept.

48 

48

46

46

45

44

45

45

45

45

45

45

45

45

45

42

41

41

46

£2

51

48

46

44

42

41

41

41

41

&

1,322

44.1

2,620

Calendar year 1955: Max 21,500 Mln 25 Mean 405 Ac-ft 293,000

Water year 1955-56: Max 21,500 Mln 23 Mean 736 Ao-ft 534,000

cfs 

(2

3,200 efs'(V742~ft).

* Discharge measurement made on this day
SACRAMENTO RIVER BASIN 475

American River flume near Camino, Calif.

Location. Lat 38°46'20", long 120"42'05", in SE^NW^ sec. 25, T. 11 N., R. 11 E., on right 

bank 400 ft upstream from Iowa Canyon Creek, 1.1 miles downstream from diversion dam, 

and 2.8 miles northwest of Camino.

Records available. November 1922 to September 1956. Published as "Western States Gas & 

Electric Go's Plume" 1922-29, and as "South Fork of American River Flume" 1930-35.

Gage.--Water-stage recorder. Altitude of gage is 1,700 ft (from topographic map). Prior 

to Oct. 27, 1929, staff gage at same site and datum.

Average discharge. 34 years, 113 cfs {81,810 acre-ft per year).

Extremes.--1922-56: Maximum daily discharge, 189 cfs Aug. 15, 16, 1942, June 28, 1944; 

no flow at times each year except 1926-28.

Remarks. Records good. Flume diverts from South Fork American River in SEpSEij sec. 24, T. 

UN., R. 11 E., for power development in SW^SW^ sec. 20, T. 11 N., R. 11 E., just above 

Rock Creek, at which point water is returned to South Fork.

Cooperation. Water-stage-recorder graph and four discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7 11

8

9

10

11

12

13

14

lo

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

163 

164

156

154

160

163

0 160

159

159

159

162

156

136

129

106

117

114

113

122

136

124

122

126

123

SI

91

128

134

132

130

*126

4,213

136

8,360

Nov.

124 

120

122

121

116

117

119

115

95

94

98

95

96

120

135

109

143

148

162

163

162

163

159

148

122

144

131

120

152

145

3,858

129

7,650

Dec.

150 

166

154

134

130

168

168

168

168

168

166

167

166

*166

164

166

166

166

164

166

168

48

0

0

0

0

0

0

0

0

0

3,447

111

6,640

Jan.

0

0

0

Feb.

0. 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

17

54

79

99

118

130

139

152

154

152

156

161

165

-

1,574

54.3

3,120

Mar.

162 

163

163

164

164

165

166

165

166

167

166

167

168

168

167

168

165

163

168

166

167

166

167

163

160

167

168

168

168

167

166

5,138

166

10,190

Apr.

161 

166

168

168

168

168

165

163

168

168

166

167

168

166

166

168

168

168

168

170

162

161

168

169

169

169

168

167

166

168

5,005

167

9,930

May

168 

168

170

166

168

165

168

168

168

168

168

166

165

166

166

168

168

169

167

167

168

168

168

169

169

167

169

169

*170

170

170

5,204

168

10,320

June

169

166

167

166

166

168

121

167

167

168

168

166

164

164

164

168

168

169

169

168

168

169

169

172

168

168

168

168

168

168

4,984

166

9,890

July

168 

168

168

168

168

168

168

168

168

112

169

168

168

168

167

168

168

168

168

168

168

166

166

166

167

168

167

166

163

160

163

5,182

167

10,280

Aug.

167 

168

168

168

167

168

168

168

168

168

168

166

Tee

168

168

168

168

168

168

168

168

*168

168

168

168

168

168

168

168

168

168

5,204

168

10,320

Sept.

168 

168

168

167

167

166

166

166

167

168

168

168

168

168

168

168

168

168

168

168

168

168

168

157

161

168

160

160

122

170

5,001

167

9,920

Calendar year 1955: Max 168 Kin o Mean 137 Ac-ft 99,070

Water year 1955-56: Max 170 Mln o Mean 133 Ac-ft 96,820

Discharge measurement made on this day.
476

SACRAMENTO RIVER BASIN

South Pork American River near Camino, Calif.

38 °f 20 "' lonf 120°42>05", in SE^NWi sec. 25, T. 11 N., R. 11 E., on right 

upstream from Iowa Canyon Creek, 1.1 miles downstream from intake of 

American River flume, and 2.8 miles northwest of Camino 

Drainage area. 497 sq mi.

Records available .--October 1922 to September 1956 

GMe7^WaTe7^sT5ge recorder Altitude of gage is 1,630 ft (from topographic map). Nov. 1,

1950, to Dec. 5, 1951, staff gage at same site and datum 

Avernedi|charse --34 years 962 cfs (696,500 acre-ft per year), combined flow of South

Fork American River near Camino and American River flume

Extremes . Maximum discharge during year, 49,800 cfs Dec. 23 (gage height, 32 6 ft from 

floodmarks), from rating curve extended above 24,000 cfs on basis of computation of 

peak flow over dam; minimum daily, 3.8 cfs Oct. 25, 26 Nov 1 2 10 

1931 922 ~ 56: Maximum dlscharge, that of Dec. 23, 1955; minimum ' daily, 'l .3 cfs Aug. 24, 

s S° od except those for period of no gage-height record, which are fair. 

n 2^y ^ re^ ervoirs sinoe beginning of record (total usable canrt ,, '* ? ao re - ft )- Water diverted by El Dorado Canal (see p. 467) used for power 

and returned to river above station except for about 40 cfs, May to October, and about 

of pL^Lf??P f °{ year.,' Whi£h is ?sed for ^rigation and domestic use in vicinity Pe

Cooperation --Water-stage-recorder graph and 10 discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission prolect 

Revisions (water years ) .--WSP 931: 1928, 1938, 1940(M).

Rating tables, water year 1955 56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

0.8 

.9 

1.0 

1.3 

1.6 

2.0 

2.5 

3.0

1.6

4.0

7.0

22

42

79

148

245

4.0

5.0

9.0 

12.0

530

925

2,180

4,000

7,700

14,000

23,800

1.3 

1.6 

2.0 

2.5 

3.0 

4.0 

5.0

34

60

110

195

305

590

1,000

7.0

9.0

12.0

16.0

22.0

29.0

2,150

3,800

7,450

14,000

26,000

41,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

5.8 

5.8

5.5

5.2

5.5

5.5

5.5

5.5

5.5

5.5

.1

.8

.3

.3

.3

.3

.0

.3

.0

.3

.5

.0

.0

.0

 §.

.8

.0

.5

.5

.0 

* .0

147.5

4.76

293

Nov.

3.8 

3.8

4.0

4.0

4.0

4.0

4.0

4.0

4.0

3.8

4.0

4.6

5.5

5.2

4.3

5.2

5.8

5.2

6.1

58

300

99

38

28

9.0

35

14

5.2

15

12

698.5

23.3

1,390

Dec.

59 

71

34ia26

900

626

266

365

332

165

145

113

94

*94

99

246

420

2,700

*3,450

2,380

23,600

*a40, 000

al 5 , 000

a8, 000

a9 , 000

a6,000

a4,000

a3,200

a2,800 

a2 , 600

126,998

4,097

251,900

Jan.

a2,300 

a2,00o

al , 800

1,660

2,430

2,O9O

1,920

1,760

1,670

1,600

1,590

*1.560

1,570

3,070

8,170

9.520

5,190

3,700

3,060

2,960

3,070

3,590

7,160

4,500

6,070

5,840

4,660

3,660

3,030

2,660 

2,410

106,070

3,422

210,400

Feb.

2^200 

1,960

1,920

1,880

1,770

1,690

1,570

1,510

1,450

1,400

1,380

1,360

1,340

1,310

1,250

1,170

1,200

1,100

1,070

1,060

1,000

1,040

1,800

1,120

1,020

995

932

910

936

:;.:::

39,343

1,357

78,040

Mar.

892 

914

932

965

*1,030

896

882

928

928

936

950

874

910

914

905

946

,070

,200

,330

,310

,360

,460

,620

,870

,090

.240

,940

,820

,930

,080 

,110

40,232

1,298

79,800

Apr.

1,800 

*1,560

1,420

1.540

1,410

1,590

1,880

2,030

2,240

2,580

2,070

1,800

1,590

1,460

1,400

1,450

1,500

1,600

*1,840

2,320

2,570

2.640

3,2]0

3,280

3.550

2,970

2,460

2,180

2,060

2,220

61,820

2,061

1.22,600

May

2.440 

2,880

3,100

6.710

4,640

4,380

5,970

5,590

4,100

5,520

3,410

3,100

2,780

2,560

2,760

3,390

*3,790

4,010

3,990

4,650

5,480

6,150

6,700

6,270

5,650

5,580

5,570

4,480

*4,540

4,620

4,760

133,150

4,295

264,100

June

4.520 

4,220

4,380

4,140

4,120

2,890

3,130

5,550

5,480

5,650

5,590

5,510

5,260

5,060

2,600

2,170

2,120

2,400

2,600

2,080

2,050

2,170

2,510

2,500

2,100

1,990

2,070

2,160

2,030

_ 1 3 850

86, 220

2,874

171,000

July

1.500 

1,540

1,090

892

852

776

800

852

869

882

780

680

590

590

472

485

475

472

457

449

422

411

489

597

656

545

449

528

278

255 

201

19,872

641

29,420

Aug.

188 

165

137

131

98

106

94

80

96

95

102

94

82

53

70

71

73

59

61

55

66

*52

50

46

51

48

45

39

52

67 

59

2,463

79.5

4,890

Sept.

57 

54

49

46

48

41

56

41

58

53

51

48

48

46

50

44

44

39

55

110

69

64

58

101

38

44

61

56

48

43

1,618

53 . 9

3,210

Calendar year 1955 : Max 40,000 Mln 3.8 Mean 006 Ac-ft 583,300

Water year 1955-55 : Max 40,000 Mln 3.8 Mean 1,690 Ac-ft 1,227,000

cfs (10.53 ft); June 11 (2 a.m.) 4,590 cfs (9.76 ft).. 

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of records upstream stations.
SACRAMENTO RIVER BASIN 477

South Fork American River near Lotus, Calif.

Location.--Lat 38°49'05", long 120°56'45", In SW£ sec. 11, T. 11 N., R. 9 E., on left bank 

0.4 mile downstream from Greenwood Creek, 2.4 miles northwest of Lotus, and 3.3 miles 

northwest of Coloma.

Drainage area. 678 sq mi.

Records available.--May 1951 to September 1956.

Gage. --Water-stage recorder. Altitude of gage is 635 ft (from topographic map).

Average dlscharge.--5 years, 1,385 cfs (1,003,000 acre-ft per year).

Extremes.--Maximum discharge during year, 71,800 cfs Dec. 23 (gage height, 21.37 ft); 

minimum,92 cfs Oct. 26.

1951-56: Maximum discharge, that of Dec. 23, 1955; minimum, that of Oct. 26, 1955.

Remarks.--Records excellent. Flow partly regulated by 2 powerhouses and 4 reservoirs 

since beginning of record (total usable capacity, 35,500 acre-ft). Diversions for irrigation and domestic supply above station (see records for El Dorado Canal, p. 467).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Feb. 10 to Mar. 19, Apr. 4)

95

157

Z54

389

654

1,030

Z,090

8.0 

9.0

11.0 

14.0 

17.0 

Zl.O

3,580

5,640

11,700

24,100

41,000

69,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

1718 

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

179

177

*173

165

171

175

173

175

175

175

179

182

159

159

146

156

154

156

154

150

153

146

146

148

148

105

143

155

157

155

155

4,854

156

9,590

Nov.

*153

150

148

150

148

146

148

148

146

111

156

128

154

159

175

165

210

215

205

218

410

112

263

229

203

179

198

171

179

188

5,621

187

11,150

Dec.

228

*555

260

252

184

1,550

1,250

604

674

680

457

581

548

510

294

510

593

787

*3,730

5,110

5,240

55,500

*62 . 400

*25,200

8,440

10,500

8,600

*4,880

5,650

2,980

*2,700

181,947

5,869

560,900

Jan.

2,550

2,550

2,220

2,090

4,860

5,550

2,840

2,690

2,520

2,210

2,100

1,990

1,970

4,510

11,700

15.100

eisio

4,580

5,660

5,550

5,560

4,000

8,920

5,260

7,060

7,510

6,760

4,850

5,890

5,590

5,050

159,120

4,488

275,900

Feb.

*2,690

2,450

2,300

2,180

2,050

1,950

1,780

1,710

1,610

1,540

1,500

1,470

1,460

1,420

1,550

1,270

1,290

1*260

1,280

1,610

1,410

1,430

2.900

1,920

1,680

1,670

1,520

1,440

1,550

- -----

49,670

1,713

98,520

Mar.

*1,400

1,390

1,580

1,590

1,500

1,570

1,510

1,320

1,290

1,290

1,300

1,250

1,230

1,230

1.220

1,230

1,320

1,440

1,580

1,610

1,610

1,720

1,850

2,100

2,550

2.520

2,260

2,100

2,180

2,340

2,380

50,440

1,627

100,000

Apr.

2,150

*1,850

1,660

1.550

1,610

1,770

2,040

2,260

2,450

2,780

2,420

2,090

1,840

1,720

1,610

1,620

1,670

1,770

1,970

2,420

2,720

2,780

5,270

5,550

5.500

5,580

2,860

2,490

2,520

*2,550

68,250

2,274

155,300

May

2.590

2,980

5,140

6.510

4,920

4,480

4,150

5,770

4,100

5,870

5,650

5,450

5,120

2,870

2,950

5,360

3,770

3,940

3,960

4,520

5,040

5,640

6,260

6,110

5,280

5,330

5,280

4,360

4,400

4,580

4,630

132,550

4,276

262,900

June

4.580

4,120

4,190

4,230

5,510

5,050

5,150

5,530

3,500

5,580

5,650

5,510

5,550

5,140

2,870

2,580

2,520

2,500

2,750

2,280

2,190

2,280

2,450

2,420

2,280

2,120

2,190

2,270

2,250

2.020

87,980

2,933

174,500

July

1.710

1,500

1,340

1,110

1,040

990

998

1,040

1,040

*1,080

966

870

790

762

661

655

648

641

629

616

597

579

641

715

790

700

635

512

446

406

570

25,455

821

50,490

Aug.

544

540

526

526

294

290

294

278

284

278

284

281

275

*278

265

272

272

272

260

260

257

266

254

254

251

254

251

251

248

266

251

8,574

277

17,010

Sept.

248

260

251

248

248

245

245

257

240

254

251

251

248

248

248

246

245

246

248

266

505

266

266

254

272

245

240

254

251

248

7,584

255

15,040

Calendar year 1955: Max 62,400 Mln 105 Mean 1,151 Ae-ft 833,200

Water year 1955-56: Max 62,400 Min 105 Mean 2,082 Ae-ft 1,511,000

Peak discharge (base, 5,600 cfsj. nfin . ?.n l^ a.m.) 6,390 r-f* (n.5>B rt-.l; Dnr-. ?3 (R p.m.1 71 .ann

Discharge measurement made on this day.
478 SACRAMENTO RIVER BASIN 

Weber Creek near Salmon Falls, Calif.

of Coloma.

Drainage area.--100 sq mi.

Records available. March 1943 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 610 ft (from topographic map). Prior 

~^o Dec. 12, 1951, at site 150 ft upstream at same datum.

Average discharge. 13 years, 81.4 cfs (58,930 acre-ft per year).

Extremes.-Maximum discharge during year, 11,800 cfs Dec 23 (gage height 15 92 "), 

from rating curve extended above 6,900 cfs on basis of logarithmic plotting, minimum,

°'MS-SB-' Maximum discharge, that of Dec. 23, 1955; no flow at times in 1945, 1947, 

ia50-52, 1955.

Remarks. Records good except these below 5 cfs and those for period of no gage-height 

record, which are fair. Natural flow of stream affected by storage reservoirs (combined capacity, about 3,800 acre-ft), diversions into the basin from South Fork 

American River and North Fork Cosumnes River basins and out of the basin during the 

irrigation season, diversions for irrigation, mining, municipal, and industrial use. 

Some water enters the basin from Sly Park unit of the Central Valley project.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 23 to Sept. 30

5.1 

5.3 

5.6 

6.0

1.3

1.9

2.9

6.2

11

22

41

6.5

7.0

8.0

9.0

10.0

11.0

12.0

13.0

15.0

81

139

302

575

1,100

2,050

3,310

4,930

9,250

5.1 

5.3

6.5

7.0

8.0

9.0

10.0

11.0

12.0

87

145

350

700

1,280

2,120

3,310

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.5

.5

*.5

.6

.8

.6

.5

.1!

.4

.4

.4

.6

.7

.8

.8

.8

.8

.8

.8

.9

.9

1.0

1.1

1.4

1.3

1.3

1.4 

1.5

1.5

1.5 

1.7

27.2

0.88

54

Nov.

*lil

178

2.6

3.4

3.5

3.5

3.6

4.2

4.0

3.6

4.0

4.1

6.4

21

14

9.4

23

18

13

12

22

17

12

14

12

11

9.9 

9.4

8.4

8.2

280.7

9.36

557

Dec.

18

*25

15

13

IS.

156

67

35

47

40

28

22

19

17

16

18

22

45

*883

686

309

*5,540

7.160

»2,760

809

2,250

1,030 

500

340

263

*267

23,412

755

46,440

Jan.

308

355

237

233

1,600

755

518

500

350

345

288

235

HI

1,020

2.160

1,310

599

417

328

332

298

498

875

500

941

1,390

1,120 

643

459

380

300

19,485

629

38,650

Feb.

*253

219

192

175

158

141

128

118

109

105

98

92

89

85

77

73

J2

84

86

380

182

236

898

358

325

320

245 

209

259 -

5,766

199

11,440

Mar.

*202

175

161

148

168

159

135

127

120

114

108

100

95

89

82

-77

74

72

71

69

64

62

60

59

57

55

53 

52

46

11

41

2,936

94.7

5,820

Apr.

44

*41

43

43

42

40

39

37

38

37

70

79

52

55

54

53

51

44

42

40

36

36

34

IB

31

115

120

78

62

*52

1,596

53.2

L 3,170

May

43

39

62

288

151

145

175

159

163

168

163

144

118

99

80

72

62

57

54

50

47

42

38

42

33

28

25 

22

20

25

20

2,634

85.0

5,220

June

ia19

15

14

13

12

13

12

11

9.1

8.6

8.8

7.3

7.3

10

9.9

8.8

7.5

7.0

6.5

6.0

6.0

6.0

6.0

6.0

5.5

5.5 

5.5

5.5

5.5

276.3

9.21

548

July

5.0

4.0

3.5

3.0

2.5

2.5

2.5

2.5

3.0

*3.1

2.8

2.5

2.7

3.1

3.3

2.8

2.6

2.6

2.6

2.6

2.3

2.5

2.0

1.7

1.4

1.2

to

1.2

1.4

1.4

76.5

2.47

152

Aug.

Jbl

1.2

1.4

2.0

2.3

2.3

2.3

1.8

2.0

2.0

2.6

2.5

2.3

2.0

1.8

2.3

2.4

2.4

2.5

2.6

2.6

2.6

3.2

2.6

4,1

3.2

2.9 

2.7

2.6

2.5

2.4

73.4

2.37

146

Sept.

1^1

4.1

4.1

4.3

4.1

3.5

3.5

4.1

4.1

3.9

4.2

4.3

4.2

4.6

4.7

4.1

4.2

4.7

6.2

IS

10

12

11

8.6

6.8

5.5

5.8 

5.1

3.9

3.9

165.2

5.51

328

Calendar year 1955- Max 7,160 Mln o Mean 1O4 Ac-ft 75,120

Water year 1955-55: Max 7,160 Mln o.4 Mean 155 Ac-ft 112,500

Peak discharge (base, 2.400 cfs). --Dec. 23 (5:30 P.m.) 11.800 cfs (15. 92 ft): Dec 26 (12 m.)

4,290 cfs (12.64 ft); Jan 5 (2:30 p.m.) 2,420 cfs (11.28 ft); Jan. 15 (5:30 p.m.) 4,180 cfe (12.57

ft) .

* Discharge measurement made on this day.

Note. No gage-height record June 18 to July 9; discharge estimated on baeis of recorded range in

stage and records for South Pork American River near Lotus.
SACRAMENTO RIVER BASIN 

Folsom Reservoir near Folsom, Calif.

479

Location. Lat 38°42'29", long 121°09'22", in NW^NEi sec. 24, T. 10 N., R. 7 E., 0.7 mile 

downstream from South Fork American River and 2,3 miles northeast of Folsom.

Drainage area. 1,875 sq mi.

Records available.--February 1955 to September 1956.

Gage,--Water-stage recorder. Datum of gage is at mean sea level (levels by Bureau of Reclamation),

Extremes.--Maximum contents during year, 1,020,300 acre-ft June 29 (elevation, 466.87 ft);

 minimum, 156,600 acre-ft Nov. 10 (elevation, 352.70 ft),

1955-56: Maximum contents, that of June 29, 1956; minimum since normal operation 

began, that of Nov. 10, 1955.

Remarks.--Reservoir is formed by concrete gravity-type dam with rolled-earth wing dams,

 auxiliary dams, and dikes, completed May 14, 1956; storage began Feb. 25, 1955. Spillway gates installed July 31, 1955; control valves installed July 23, 1956. Usable capacity, 1,000,000 acre-ft between elevations 205.5 ft (invert of lower tier of river 

outlets) and 466.0 ft (gross pool elevation) above mean sea level, practically all of 

which is available for release. Spillway design flood pool elevation, 475.4 ft (capacity, 1,120,000 acre-ft). Folsom Reservoir is one of the storage units in the Central 

Valley project.

Cooperation. Record of contents furnished by Bureau of Reclamation.

Capacity table, water year 1955-56 (elevation, In feet, 

and contents, In acre-feet)

350

360

370

380

390

400

410

148,000

181,900

222,300

270,700

327,800

393,300

466,800

420

430

440

450

460

470

548,300

637,300

732,900

834,700

942,600

1,056,000

Contents, In thousands of acre-feet, at 12 p.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

M(*)

Oct.

178.2

177.9

176.4

175.0

173.6

172.2

171.1

169.7

169.7

168.3

166.9

165.6

163.9

162.5

161.5

161.9

160.8

159.5

158.9

158.5

158.2

159.2

160.2

159.9

159.5

158.9

158.4

158.5

159.5

160.4 

160.4

353.85

-18., 200.

Nov.

159.6

159.2

159.0

158.7

159.8

160.8

160.5

160.2

159.9

156.6

159.2

160.0

161.2

161.2

161.1

161.3

161.2

161.6

163.1

164.7

166.8

169.6

170.4

170.8

171.1

172.5

173.9

TTSTT

173.4

173.1

357.56

+12,700

Dec.

173.5

TTSTZ

177.4

179.2

179.3

187.3

195.6

199.2

203.0

208.6

212.4

213.5

214.3

216.0

217.1

218.3

221.7

228.4

266.3

320.4

352.9

583.9

865.1

866.3

784.4

727.8

669.0

608.7

561.2

531.6 

520.4

416.69

4347,300

Jan.

516.8

512.7

505.4

499.9

507.0

497.5

501.0

506.5

505.2

503.5

500.9

499.3

501.0

514.0

560.4

589.4

566.1

529.7

507.5

505.7

504.9

507.1

524.4

517.2

521.2

520.0

517.8

506.9

490.7

476.9 

477.4

411.35

-43,000

Feb.

482.7

486.1

486.1

488.7

494.0

494.1

492.7

489.9

486.2

484.5

482.5

484.9

482.2

478.0

475.9

474.1

470.9

467.4

462.8

463.3

462.8

464.4

477.9

482.5

485.4

494.3

494.7

494.6

495.1

413.58

+17,700

Mar.

494.5

493.6

493.0

498.9

498.4

495.5

491.3

485.7

480.3

478.5

481.3

480.0

477.1

474.0

469.5

465.3

466.4

465.4

463.8

459.8

455.4

451.3

448.6

452.1

458.0

463.0

466.9

469.5

472.7

477.2 

481.7

411.90

-13,400

Apr.

487.4

435.2

488.5

488.4

488.4

490.8

494.8

500.1

505.7

514.3

519.3

521.8

522.6

524.2

525.8

525.0

525.4

531.0

537.7

547.7

559.7

573.3

589.7

605.8

621.5

632.9

640.5

645.3

649.5

654.6

431.86

+172,900

May

660.0

ees.s

679.0

708.4

732.9

756.6

776.7

794.1

811.9

828.9

845.1

859.7

873.2

883.8

894.7

907.5

923.5

940.0

955.7

973.5

991.8

992.9

1,004.2

1,012.1

1,014.3

1,012.7

1,010.3

1,005.3

1,004.6

1,006.2 

1,009.2

465.90

+354,600

June

1,006.5

1,001.8

1,002.3

1,006.4

1,007.7

1,006.9

1,002.4

1,002.0

1,002.4

1,003.3

1,004.6

1,004.2

1,005.2

1,006.4

1,007.6

1,006.1

1,003.4

1,003.2

1,005.2

1,005.6

1,007.2

1,007.9

1,010.0

1,013.5

1,014.8

1,015.2

1,016.6

1,019.1

1,020.3

1,018.4

466.71

+9,200

July

1,013.8

1,009.3

1,006.0

1,003.4

999.7

995.8

992.0

998.1

984.0

979.9

976.2

971.7

967.2

962.7

957.4

951.8

946.5

941.2

936.0

930.1

923.8

917.9

912.1

907.1

903.3

897.9

892.0

885.5

878.7

872.6 

865.0

452.87

-153,400

Aug.

856.6

848.3

839.8

832.1

824.1

816.4

810.2

803.1

795.8

787.7

779.5

771.6

762.8

755.3

746.8

740.8

734.8

728.6

722.8

716.9

710.9

705.0

699.1

692.5

687.2

680.5

674.1

668.0

661.9

655.9 

650.3

431.40

-214,700

Sept.

645.7

641.3

636.9

632.6

628.1

623.4

618.7

614.3

609.7

605.4

601.6

598.0

594.2

590.1

587.1

583.5

579.8

575.7

572.5

569.1

565.8

562.4

558.8

555.3

551.9

547.7

544.1

540.6

537.0

553^4

418.24

-116,900

Calendar year 1955.................... * +347,300

Water year 1955-56.................... * +354,800

t Elevation, In feet, at end of month. 

t Change In contents In acre-feet.
480 SACRAMENTO RIVER BASIN 

American River at Pair Oaks, Calif.

Location.--Lat 38°38'15", long 121°15'55", in San Juan Grant, on right bank Just upstream

 from old highway bridge and 1,500 ft upstream from the new highway bridge at Fair Oaks, 

Sacramento County, 2.6 miles downstream from Nimbus Dam, 10 miles downstream from South 

Fork, and at mile 19.2.

Drainage area.--1.921 sq mi.

Records available.--November 1904 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 64.79 ft above mean sea level. Prior to 

TTov. 7, 1930, staff gages or water-stage recorders at several sites within 1,000 ft of 

present site, all at datum 1.0 ft higher.

Average discharge.--51 years (1905-56), 3,796 cfs (2,748,000 acre-ft per year), adjusted 

for storage in, and diversions and evaporation from, Polsom Reservoir.

Extremes.--Maximum discharge during year, 71,500 cfs Dec. 24 (gage height, 20.35 ft); minimum, 333 cfs Nov. 2.

1904-56: Maximum discharge, 180,000 cfs Nov. 21, 1950 (gage height, 31.85 ft); minimum, 3.6 cfs Aug. 16, 1924.

Remarks. Records good. Flow regulated by Folsom Reservoir beginning Feb. 25, 1955 (see 

preceding page). Diurnal fluctuations from Folsom powerplant reregulated by Nimbus 

Reservoir (capacity, 2,800 acre-ft between normal operating elevations 118.5 and 125.0 

ft) and powerplant. Many diversions above station for irrigation, municipal and domestic water supply. Diversions to San Juan Suburban Water District, Natomas Water Co., 

and State of California are made at Folsom Dam. Some inflow from Bear and Yuba River 

basins. Records of chemical analyses and water temperatures for the water year 1956 

are given in WSP 1453.

Revisions (water years).--WSP 1181: 1928(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Apr. 3-24)

Oct. 1 to Dec. 24 Dec. 25 to May 22 May 23 to Sept. 30

1.3 

2.0 

3.0 

4.0 

5.0

455 7.0 10,200 3.0 1,800 10.0 18,800 3.0 1,850 

1,020 10.0 19,800 4.0 3,040 15.0 41,200 4.0 3,220 

2,100 15.0 41,200 5.0 4,580 20.0 69,400 5.0 5,060 

3,500 20.0 69,400 7.0 8,900 7.0 9,640 

5,300 9.0 15,200 

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac -ft

(t)

tt

(**)

Oct.

545 

552

*BB6

1,070

1,070

1,100

1,080

1,070

1,070

1,070

1,080

1,060

1,050

1,040

1,040

1,040

1,020

1,010

552

545

545

545 

538

538

538

545

538

530

530

530

530

24,857

802

49,300

-18,200

4,160

1,330

Nov.

538 

*522

545

560

545

530

538

515

522

515

560

4B5

470

522

530

568

560

552

522

568

582

582 

598

575

575

605

575

575

575

582

16,491

550

32,710

+12,700

2,820

540

Dec.

*582

?2T

613

590

590

621

*621

661

677

677

637

629

621

653

637

629

629

613

6B5

773

821

6,910 

*47,300

69,500

68,500

* 67, 900

60,400

47 , 600

35,000

24,800

14,000

455,290

14,690

903,100

t-347,300

1,630

210

Jan.

10,700 

#11,100

10,400

9,910

13,500

18,700

9,040

7,710

8,800

8,980

8,540

8,220

6.560

11,800

22,600

32,400

*53,500

33,300

*24,000

*12,900

12,500

12,100 

19,200

20,500

20,400

25,900

24,000

21,400

20,900

17,500

10,100

507,160

16,360

*1,006

-43,000

1,180

360

Feb.

6,150 

6,340

7,220

5,706

4,580

5,950

#6,330

6,890

6,370

5,680

5,680

4,310

4,990

6,390

*5,380

5,120

4,850

5,760

6,520

a5,850

a5,160

a5,160 

a5,220

a5,510

a5,560

a2,560

a'4,990

a5,510

a5,600

161,330

5,563

320,000

+17,700

2,050

1,260

Mar.

a5,560 

*a5,250

5,120

3,470

4,470

6,220

6,370

6,810

6,720

5,360

3,940

3,990

5,340

5,600

5,880

5,860

3,840

5,210

5,480

6,760

7,030

7,050 

6,940

4,800

4,900

4,940

4,990

4,980

4,810

4,810

4,960

167,460

5,402

332,200

-13,400

3,040

2,660

Apr.

4,870 

*4,510

4,800

*4,800

4,810

4,720

4,060

4,100

3,980

4,060

4,800

5.160

4,980

4,050

4,000

5,050

4,830

2,830

*2,690

1.880

2,030

2,100 

2,150

2,120

3,540

4,490

4,540

4,560

4,540

4,400

119,450

3,982

236,900

KL72, 900

3,600

2,920

May

#4,510 

4,510

4,130

4,080

3,220

3,180

3,220

3,180

2,980

3,150

3,080

3,070

3,050

3,040

3,050

3,050

3,080

3,070

3,570

3,950

6,020

14,400 

11,800

12,100

12,400

13,900

14,100

13,200

11,300

#10,200

10,200

197,790

6,380

392,300

f354, 600

4,300

5,670

June

12,000 

11,900

10,400

8,740

8,520

8,780

8,210

8,020

8,110

8,110

8,160

8,110

6,830

7,050

6,320

6,540

6,650

6,300

4,720

4,660

4,660

4,440 

4,260

4,240

4,210

4,240

4,240

4,240

4,340

5,840

202,840

6,761

402,300

+9,200

5,730

8,150

July

5,790 

*5,080

4,320

4,260

3,700

4,320

4,260

4,260

4,260

4,260

4,190

4,240

3,700

4,150

4,120

4,150

4,240

4,280

4,280

4,260

4,300

4,300 

4,300

4,220

3,790

3,700

4,320

4,420

4,480

3,900

4,460

132,310

4,268

262,400

-153,400

6,200

9,010

Aug.

#4.840 

4,740

4,640

4,640

4,600

4,010

3,560

4,480

4,620

4,360

4,540

4,680

4,700

4,720

4,700

3,410

3,200

3,250

3,360

3,460

3,540

3,610 

3,680

3,560

3,270

3,740

3,580

3,410

3,400

3,380

#3,330

123,010

3,968

244,000

-214,700

5,500

6,760

Sept.

2,660 

2,610

2,590

2,620

2,400

2,600

#2,630

2,520

2,450

2,280

2,140

2,170

2,170

2,170

2,190

2,170

2,180

2,260

2,220

2,220

2,220

2,220 

2,220

2,210

2,210

2,210

2,270

2,420

2,480

2,590

70,300

2,343

139,400

-116,900

4,600

4,750

Adjusted for change in reservoir contents, diversions, and evaporation

Mean

Ac-ft

595 

36,590

820 

48,770

Calendar year 1955: 

Water year 1955-56:

20,360 

*1,252

15,690 

964,500

5,928 

341,000

5,277 

324,500

6,996 

416,300

12,310 

756,900

7,149 

425,400

Observed

Max 69,300 Min 160 Mean 3,050 Ac-ft 2,208,000 

Max 69,300 Min 470 Mean 5,952 Ac-ft 4,321,000

2,020 

124,200

676 

41,560

535

31,850

Adjusted

Mean 3,859 Ac-ft 2,794,000 

Mean 6,562 Ac-ft 4,764,000

* Discharge measurement made on this day.

t Change in contents, in acre-feet, in Polsom Reservoir.

* Expressed in thousands.

tt Diversions, in acre-feet, to Natomas Water Co., San Juan Suburban Water District, and to State 

of California; furnished by Bureau of Reclamation.

** Evaporation from Polsom Reservoir, in acre-feet; furnished by Bureau of Reclamation.

a No gage-height record; discharge estimated on basis of computed releases from Nimbus Dam.
SACRAMENTO RIVER BASIII 481

American River at Sacramento, Calif.

Location.--Lat 38°34'05", long 121°25'20", on left bank at H Street Bridge, Just east of 

Sacramento, Sacramento County, 6.5 miles upstream from mouth.

Records available.--July to October 1921, October 1929 to October 1932, May 1934 to December 1942 (low-water periods only), May 1943 to September 1956.

Gage. Water-stage recorder. Gage Is set to datum of Corps of Engineers. Auxiliary waterstage recorder 2.8 miles downstream from base gage.

Average discharge.--13 years (1943-56), 3,747 cfs (2,713,000 acre-ft per year).

Extremes.--Maximum discharge during year, 72,100 cfs Dec. 26 (gage height, 38.93 ft); 

minimum not determined, occurred during period of backwater Dec. 20-22.

1921, 1929-32, 1934-56: Maximum discharge, 106,000 cfs, plus estimated overflow of 

70,000 cfs Nov. 21, 1950 (gage height, 45.73 ft); minimum recorded, 21 cfs Aug. 14, 

1931.

Remarks.--Records good. Flow regulated by reservoirs and powerplants above station. See 

Remarks for station at Fair Oaks. Diversions for irrigation of about 4,400 acres 

between stations at Fair Oaks and at Sacramento. Records of chemical analyses for the 

water year 1956 are given in WSP 1453.

Cooperation.--Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

1?.

11

14

15

16

17

18

19

20

21

22

2?

24

2C

26

27

28

29

30

31

Total

Moan

Ac- ft

Oct.

539

555

712

*1,000

1,000

1.010

1,010

1,000

990

1,010

1,000

990

980

980

980

980

970

970

654

539

539

531

523 *531

531

539

531

531

523

523

523

23,694

764

47,000

Nov.

531

*547

515

547

547

523

515

499

507

483

539

491

475

499

507

539

539

547

515

523

573

564

591

573

555

573

573

555

573

*573

16,091

536

31,920

Dec.

532

618

618

600

600

627

*627

664

683

683

654

627

645

654

664

636

654

636

712

382

209

4,410

*41,600

*69,200

70,300

70 . BOO

*60,400

47,600

35,000

24,800

14,000

450,885

14,540

894,300

Jan.

10,600

*11,200

10,300

a9,910

13,500

18,700

9,420

8,690

*9,080

9,400

8,740

8,620

7 1 17Q

10,600

20,200

33,500

*36.200

36,100

26,700

14,000

13,400

12,300

17,700

21,700

20,000

26,300

25,100

22,100

21,500

20,100

12,100

524,930

16,930

tl,041

Feb.

7,580

6,720

7,840

6,230

4,820

*5,890

6,510

7,570

*6,830

6,300

6,730

4,960

5,160

6,540

5,330

5,740

4,520

5,770

6,210

5,480

5,160

5,160

5,220

5,510

5,560

2.720

4,590

5,440

5,170

167,260

5,768

331,800

Mar.

5,660

*5,600

5,320

5.760

4,300

6,100

6,570

*7.200

7,030

5,630

4,430

3,890

5,900

5,790

6,070

6,270

3,930

4,780

5,770

6,480

7,050

7,030

7,140

4,900

4,840

4,900

5,020

5,020

4,840

4,700

4,780

170,700

5,506

338,600

Apr.

4,800

4,360

4,960

4,900

4,920

*4,840

4,250

4,160

4,040

4,120

4,540

5.160

5,060

4,210

4,040

4,900

5,000

3,250

*2,820

2,140

2.050

2,140

2,200

2,160

2,970

4,380

4,440

4,500

4,480

4,330

120,120

4,004

238,300

May

4,360

4,400

4,080

4,020

3,080

2,990

3,180

3,210

2,970

*3,150

3,120

3,100

3,130

*3,010

2,850

2.770

2,800

2,790

3,230

3,810

5,440

*14 . 400

11,800

12,100

12,400

13,900

14,100

13,200

11,300

*10, 400

10,100

195,190

6,296

387,200

June

12,000

12.200

11,000

8,870

8,270

8,850

*8,020

7,920

7,900

7,880

7,900

7,920

6,910

7,000

6,230

6,380

6,520

6,520

4,680

4,640

4,680

4,520

4,160

4,200

4,140

4,140

4,200

4,160

4.120

5,640

201,570

6,719

399,800

July

5.780

*5,180

4,220

4,120

3,520

4,160

4,140

4,120

4,100

4,100

4,060

4,100

3,540

4,000

4,000

*4,020

*4,080

4,120

4,120

4,100

4,120

4,140

4,140

4,060

3,620

3,560

4,140

4,240

4,280

3,820

4 300

128,000

4,129

253,900

Aug.

*4,680

4.720

4,560

4,500

4,520

4,000

3,700

4,160

4,480

4,320

4,360

4,560

4,580

4,620

*4,600

3,540

3,130

3,110

3,220

3,330

3,420

3,450

3,540

3,380

2.960

3,780

3,450

3,27ff

3,250

3,270

3,240

119,700

3,861

237,400

Sept.

2.700

2,540

2,540

2,210

2,180

2,410

*2,510

2,640

2,440

2,340

2,170

2,170

2,170

2.140

2,170

2,140

2,160

*2,240

2,250

2,230

2,230

2,230

2,210

2,210

2,210

2,210

2,250

2,370

2,430

2,520

69,220

2,307

137,300

Calendar year 1955 : Max 70,800 Mln 138 Mean 3,027 Ac-ft 2,191,000

Water year 1955-56 : Max 70,800 Mln 209 Mean 5,976 Ac-ft 4,339,000

* Discharge measurement made on this day.

* Expressed In thousands.

a No gage-height record; discharge estimated on basis of records for station at Pair Oaks
482 SACRAMENTO RIVER BASIN

Sacramento River at Sacramento, Calif.

Location. Lat 38°35'12", long 121°30'15", on left bank 300 ft upstream from I Street

 Bridge, in city of Sacramento, 0.7 mile downstream from American River.

Records available. January 1904 to July 1905 (gage heights only), June to November 1921,

 and October 1948 to September 1956 in reports of Geological Survey. 1924-56 in 

reports of California Department of Water Resources. November 1879 to May 1888 and 

December 1890 to September 1956 (gage heights only) in reports of U. S. Weather Bureau.

Gage.--Water-stage recorder. Datum of gage at low-water mark of Oct. 23, 1856, 0.12 ft 

above mean sea level, and at 3.10 ft, Corps of Engineers datum.

Average discharge. 8 years (1948-56), 24,770 cfs (17,900,000 acre-ft per year).

Extremes.--Maximum discharge during year, 95,300 cfs Dec. 23 (gage height, 28.67 ft); 

minimum daily, 7,330 cfs Oct. 24; minimum gage height, 1.23 ft Oct. 24.

1921, 1948-56: Maximum discharge, 104,000 cfs Nov. 21, 1950 (gage height, 30.14 ft); 

minimum daily, 5,590 cfs July 20, 1949.

Maximum discharge known prior to Nov. 21, 1950, 103,000 cfs Jan. 17, 1909 (gage 

height, 29.6 ft), from reports of California Department of Water Resources.

Remarks.--Records excellent. Natural flow of stream affected by storage reservoirs, power 

developments, bypassing for flood control, diversions for irrigation, and considerable 

return flow from irrigated areas. Below about 35,000 cfs, the stage-discharge relation is affected by tidal influences. Records of chemical analyses and water temperatures for the water year 1956 are given in WSP 1453.

Cooperation. Records collected and prepared in cooperation with the California Department 

of Water Resources.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

14

13

16

17

18

19

20

21

22

23

24

2C

?7

28

29

SO

31

Total

Mean

Ao-ft

Oct.

7,940

7,970 

8,040

7,870

7,900

7,860

7,770

7,890

8,100

8,130

8,010

8,170

8.690 

8,690

8,460

8,350

 8,200

8,270

7,970

7,620

7,540

7,490

7,380

7.330

7,420

7,470 

7,420

7,580

7,760

8,060

7,990

245,330

7,914

486,600

Nov.

7,900

7,840 

7,970

7,890

7,970

7,810

7,840

7,950

7,900

7,970

T.BQQ

8,050

8,430 

8,090

8,900

9,740

 9,720

9,960

9,970

9,970

9,860

12,100

18.900

17,600

15,000

13,800 

12,700

11,600

10,600

10,100

301,930

10,060

598,900

Dec.

10,100

9,860 

10,200

9,980

9.820

10,000

17,900

28,400

28,000

23,700

21,700

20,200

17,100 

15,300

14,000

13,200

12,600

13,800

21,600

47,000

 66,200

71,900

90.200

 86,200

84,500

85,600 

 85,300

82,200

78,100

74,400

69,400

1,228,460

39,630

*2,437

Jan.

66,600

65,700 

65,300

65,800

66,500

73,500

67,400

65,700

 66,300

66,700

66,400

65,900

64.400 

66,500

77,1'00

87,700

 88 . 600

88 , 100

85,700

76,500

74,300

72,500

75,700

79,600

79,700

83,500 

85,500

81,300

79,800

78,200

72,200

1 2,2 96. 7

74,090

*4,555

Feb.

66,600

64,900 

65,100

63,100

61,300

*60,600

60,300

59,600

57,000

53,300

49,400

45,500

43,600 

 43,000

40,900

39,500

36,500

36,600

36,100

35.600

39,900

47,100

56,100

65,800

67.500

65,800 

 64,600

64,400

63_,500

(1,553.2

53,560

*3,081

Mar.

65.000

62,500 

61,400

60,400

59,200

60,500

 60,000

58,700

56,400

52,500

48,300

 44,700

44,400 

43,400

42,600

42,000

39,700

38,800

40,100

40,300

41,300

41,500

41,800

40,700

40,500

41,000 

41,700

41,900

40,900

39,100

38.500

*1,467.8

47,350

*2,911

Apr.

57 . 300

35,900 

54,800

52,900

51,300

30,100

29,800

29,500

30,000

30,800

32,100

33,900

34,300 

33, 700

33,000

32,800

32,800

31,200

29,900

29,200

29 . 100

29,500

30,000

30,700

31,300

32,900 

33,900

34,800

33,600

32,200

963,300

32,110

May

30,700

29 . 600 

29,800

31,000

35,000

40,200

43,000

44,600

 44,900

45,000

44,700

44,200

43,900 

42,800

40,400

38,000

36,800

37,000

38, 100

39,000

40,400

49,100

51,200

52,500

53,900

54.200 

53,600

51,500

 47,700

43,000

40,700

* 1,315 . 5

42,470

*2,611

June

40,800

41.200 

39,800

57,900

57,000

56,500

33,700

32,100

31,200

30,500

29,600

29,300

28,100 

26,600

22,000

21,400

21,500

21,000

19,300

18,900

18,800

18,200

17,900

17,400

17,000

16,400 

15,600

15,000

14.500

15,400

764,600

25,490

*1,517

July

16.100

15,300 

13,900

15,600

12,600

12,600

12,500

12,400

12,300

 12,100

11,800

11,800

11.300 

11,800

12,200

12,200

12,500

12,400

12,400

12,300

12,300

11,900

12,000

11,900

11,400

11,500 

11,900

12,000

11,900

11,600

12,000

384,500

12,400

762,600

Aug.

12,400

12.500 

12,200

12,000

11,700

11,200

11,400

11,800

11,900

12,000

12,100

12,200

12,100 

12,300

12,300

11,300

11.000

11,100

11,200

11,200

11,400

11,600

11,800

11,800

11,400

12,100 

12,000

11,900

11,600

11,900

11,700

365,100

11,780

724,200

Sept.

11,500

11,300 

11,300

11.100

11,400

11,600

12,100

12,600

13,000

13,300

12,900

 13,600

13,800 

14,000

14,200

14,800

14,900

14,900

15,300

15,600

15.900

15,900

15,700

15,400

15,000

14,600 

14,300

14,300

14,200

13,900

412,400

13,750

818,000

Calendar year . '1955 : Max 90,200 Mln 7,330 Mean 15,430 Ao-ft 11,170,000

Water year 1955-56 : Max 90,200 Mln 7,330 Mean 30,870 Ao-ft 22,410,000

* Discharge measurement made on this day.

* Expressed In thousands.
SACRAMENTO RIVER BASIN 483

Adobe Creek near Kelseyville, Calif.

Location.--Lat 38°55'40", long 122°52'45", in SE^- sec. 5, T. 12 N., R. 9 W., on left bank 

2.5 miles upstream from Highland Creek and 4.2 miles south of Kelseyville.

Drainage area. 6.39 sq mi.

Records available. October 1954 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 1,490 ft (from topographic map).

Extremes. 1954-55: Maximum discharge during water year, 416 cfs Nov. 15 (gage height, 

6.32 ft); no flow at times during several months.

1955-56: Maximum discharge during water year, 1,250 cfs Dec. 21 (gage height, 

8.72 ft); no flow at times during several months.

Remarks. Records fair. Some storage and diversions for irrigation above station.

Rating table, Oct. 1, 1954, to Sept. 30, 1956 (gage height, In feet, 

and discharge, in cubic feet per second)

3.86

3.9

4.0

4.1

4.2

4.3

4.4

0

.1

.6

2.4

5.4

11

19

4.5 

4.7 

5.0 

5.5 

6.0 

8.0

29

52

96

194

320

975

Discharge, in cubic feet per second, water year October 1954 to September 1955

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

50- aO

aO

aO

aO

aO

aO

a. 3

a72

a.l

aO

aO

aO

*aO

0

0

0

0

0

.3

.2

.2

.1

.2

.2

.2

.2

.2

.2

.2

.2

3.0

0.10

6.0

Nov.

0,1

.3

.4

.4

.4

.4

.5

5.2

10

1.8

11

5.0

1.6

32

141

13

4.6

*2.8

2.4

2.1

1.6

1.4

1.2

1.2

1.1

1.1

.9

.9

.8

.8

246.2

8.21

488

Dec.

39

63

31

25

69

"72 118

14

56

32

16

10

8.3

6.2

5.0

4.2

3.6

3.4

3.1

2.8

2.6

2.4

2.4

2.1

1.8

1.8

T76- 1.6

1.6

1.6

563.7

18.2

1,120

Jan.

3.9

3.1

*2.6

2.4

2.4

1.8

T78

1.8

5.6

6.2

5.0

4.2

3.9

3.6

7.1

8.3

23

5146"

28

19

15

12

10

8.3

6.7

5.8

5.0

4.6

4.2

4.2

306.5

9.89

608

Feb.

4.6

3.9

3.6 3.4'

3.1

3.1

2.8

2.6

2.6

2.4

2.4

2.1

2.1

2.1

2.1

1.6

1.8

1.8

1.4

TT4

1.4

1.4

1.4

*1.4

1.4

17

*28

*12

_

------

114.9

4.10

228

Mar.

9.5

STT

7.2

5.8

5.0

4.2

3.9

3.9

7.2

5.8

4.6

4.2

3.9

3.6

2.8

2.8

2.8

2.6

2.6

2.4

2.1

2.1

2.1

1.8

1.8

1.8

1.8

2.1

3.1

2.4

1*8

116.0

3.74

230

Apr.

1.8

1.8

1.6

1.4

1.2

1.2

1.2

1.2

.9

.2

.2

.2

.2

.2

.4

.9

1.2

1.1

5.7

119

~47 131

24

16

55

73

38

26

19

13

583.6

19.5

1,160

May

"7.7 10

6.7

5.8

5.0

4.2

3.9

3.6

3.9

*3.4

3.4

3.1

2.8

2.8

2.6

2.6

2.6

2.4

2.1

2.1

1.8

1.8

1.6

1.8

1.8

.9

.8

1.1

.6 76-

.7

94.2

3.04

187

June

0.6

.7

.8

.7

.6

.4

.2

.4

.4

.4

.4

.4

.2

.2

.4

.4

.1

.1

.1

0

0

0

0

0

0

0

0

0

0

0

7.5

0.25

15

July

0

0

0

Aug.

(*)

0

0

0

Sept.

(*)

0

0

0

Calendar year 1954 : Max - Min - Mean - Ac-ft

Water year 1954-55 : Max 141 Min 0 Mean 5.58 Ac-ft 4,040

Peak discharge (base, 250 cfs).--Hoy. 15 (6 a.m.) 416 cfs (6.32 ft)j Dec. 5 (9 p.m.) 281 cfs (5.85 

ftj.

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of 1 field estimate and records for nearby 

streams.
484 SACRAMENTO RIVER BASIN

Adobe Creek near Kelseyville, Calif.--Continued

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

0

0

0

0

0

0

0

0

0

0

.2

0

0

*0

.1

0

1.2

3.8

2.1

.4

~2.3 11

.6

.4

.2

.1

0

0

22.4

0.75

44

Dec.

8.9

.8

.4

.4

12

41

4.3

2.4

2.4

1.4

1.1

.9

.7

.6

.5

.7

1.9

245

648

*183

*404

573

*347

88

47

189

*77

38

23

17

15

2,974.4

95.9

5,90C

Jan.

52

32

25

85

62

42

449

148

91

142

80

47

60

*203

*205

103

52

37

29

49

38

39

37

32

a90

a!65

a!45

a!60

47

33

25

2,804

90.5

5,560

Feb.

17

14

*12

11

9.5

8.3

7.2

6.2

5.8

5.0

5.0

4.2

4.2

3.9

3.9

3.6

3.6

3.4

a250

a450

a600

a4TO

a!70

65

131

74

45

40

37

2,399.8

82.8

4,760

Mar.

2723"

19

16

16

14

12

10

9.5

*7.7

7.2

6.7

6.2

5.8

5.4

5.0

4.6

4.2

4.2

3.9

3.6

3.6

3.4

3.4

3.1

2.8

2.8

2.8

2.8

2.6 -n F

c , to

240.9

7.77

478

Apr.

2.6

2.4

2.4

2.1

2.1

1.8

1.8

1.8

1.8

2.1

4.1

3.1

2.6

2.4

2.4

2.1

1.8

1.6

1.4

1.4

1.2

1.2

1.2

.1

*0

6.2

3.9

2.6

1.8

1.8

63.8

2.13

127

May

1.2

1.2

1.4

2.6

3.1

4.6

376

2.8

2.6

2.4

2.4

1.6

1.4

1.2

1.1

.9

.8

.7

.6

.6

.6

.5

.4

.4

.3

.2

.2

0

0

0

*0

39.4

1.27

78

June

0

0

0

July

C)

0

0

0

Aug.

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 648 Min 0 Mean 11.6 Ac-ft 8,370

Water year 1955-56: Max 648 Min 0 Mean 23.3 Ac-ft 16,950

Peak discharge (base, 250 efs).--Dee. 19 (12 m.) 975 cfs (8.00 ft); Dec. 21 (10 p.m.) 1,250 cfs 

(8.72 ft); Jan. 7 (1 P.m.) 870 cfs (7.70 ft); Jan. 15 (1:30 p.m.) 299 cfs (5.92 ft); Feb. 21 (time 

and discharge unknown).

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of records for nearby streams.
SACRAMENTO RIVER BASIN 485

Highland Creek near Kelseyvllle, Calif.

Location. Lat 38°56ilO", long 122°54'25", in NWij sec. 31, T. 13 N., R. 9 W., on downstream 

side of middle pier of Highland Springs Road bridge at Highland Springs, 1.6 miles upstream from mouth and 4.8 niles southwest of Kelseyville .

Drainage area. --IS. 7 sq mi.

Records available .--October 1954 to September 1956.

Gage . --Water-stage recorder. Altitude of gage is 1,440 ft (from topographic map).

Extremes. --1954-55: Maximum discharge during water year, 408 cfs Nov. 15 (gage height 

6.4 f t , from floodmarks) ; no flow for many days.

1955-56: Maximum discharge during water year, 1,800 cfs Feb. 21 (gage height, 11.04 

ft ) ; no flow for many days .

Remarks. --Records good except those below 10 cfs, which are fair. No regulgation or diversion.

Rating tables, Oct. 1, 1954, to Sept. 30, 1956, except period of indefinite stage-discharge

relation (gage height, In feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. I to Nov. 8, 1954, June 15 to July 7, Sept. 22-30, 

Oct. 12-16, Oct. 21 to Dec. 5, 1955)

Oct. 1, 1954, to Dec. 22, 1955 Dec. 23, 1955, to Sept. 3O, 1956

3.5 

4.0 

4.5 

5.0 

6.0 

8.0 

9.0

23

50

86

142

316

840

1,150

4.6 

5.0 

5.5

54

102

178

274

534

830

Discharge, In cubic feet per second, water year October 1954 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.2

'.2

.2

.2

.2

~7e 1.0

.4

.3

.2

.2

.2

*.2

.2

.2

.3

.4

.7

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

. 8

12.6

0.41

25

Nov.

0.9

.8

79

1.2

1.3

1.3

1.4

10

13

5.0

all

a6.0

a3.0

a44

all8

a!7

*a8.4

5.5

5.0

4.8

4.6

4.4

4.3

4.2

4.0

3.8

3.8

3.7

3.7

3.8

298.8

9.96

593

Dec.

110

~Js 140

52

110

128

55

30

110

56

32

21

17

12

9.9

8.2

7.1

6.6

6.0

5.9

5.7

5.7

5.5

5.5

5.3

5.3

5.1

57T

5.1

5.1

1,054.1

34.0

2,090

Jan.

14

9.0

*6.4

5.7

5.7

5.5

575

5.5

13

14

9.6

8.0

7.6

7.1

9.9

15

28

91

114

*65

44

32

24

19

16

13

11

9.6

8.7

9.0

634.5

20.5

1,260

Feb.

9.9

8.0

7.1

6.6

6.4

6.0

5.7

5.5

5.5

5.1

5.0

4.8

4.8

4.6

4.4

4.8

4.6

4.3

4.2

4.2

4.0

3.8

378

*3.B

3.8

24

*46

*26

_

226.7

8.10

450

Mar.

21

17

14

11

9.3

8.0

7.3

7.1

9.6

7.8

6.9

6.2

5.9

5.7

5.3

5.1

5.0

4.8

4.6

4.4

4.3

4.2

4.2

4.2

4.0

4.0

3.8

4.2

5.1

4. 2

* 0

3.8

212.0

6.84

420

Apr.

3.7

3.7

3.6

3.4

3.2

3.2

3.1

3.1

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.1

4.3

4.0

7.1

113

~TT 178

38

20

81

115

64

46

35

26

. _ - -

853.5

28.4

1,690

May

21

IF

13

12

10

9.0

8.5

7.8

6.9

*6.2

5.9

5.5

5.5

5.5

5.3

5.1

5.0

4.6

4.4

4.3

4.0

3.8

3.7

3.7

3.4

3.4

3.2

2.9

2.6

O K <-. . b

197.4

6.37

392

June

2.5

273

.1

.0

.8

.7

.6

.4

.3

.3

.4

.4

.3

.3

,1

.9

.9

.8

.8

jJL

*,,6

,.6

.7

.7

.7

.8

.8

.7

.8

 6

35.5

1.18

70

July

0.6

.6

.6

.7

.6

.6

.6

.5

.6

.4

.2

.2

.2

.2

.2

.3

.2

.2

.2

.2

' .2

.2

.2

.2

.2

.2

.1

.1

.1

.2

.2

9.8

0.32

19

Aug.

(*)

, eO.l

. eO

e.l

2.0

0.06

4.0

Sept.

> aO.l

aO

(*)

0

0

0

0

0

0

0

0

0

1.5

0.05

3.0

Calendar year 1954: Max - Mln - Mean - Ac-ft -

Water year 1954-55; Max 178 Mln 0 Mean 9.69 Ac-ft 7,020

Peak discharge (base, 5OO cfa).--Nov. 15 (time unknown) 408 cfs (6.4 ft); Dec. 5 (4 p.m.) 306 cfs 

(5.95 ft).

fee measurement or observation of no flow made on this day.

cord,

493801 O - 59 - 32
486 SACRAMENTO RIVER BASIN

Highland Creek near Kelseyville, Calif. Continued

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

0

0

0

*0

.1

.1

0

.1

0

0

0

0 

0

.3

.4

.5

.5

il

.6

.6

.6

.6

.6

. 6

6.2

0.20

12

Nov.

0.6

.7

.7

.7

.8

.8

.8

.8

.8

.8

.8

.9

1.3

.8

.5

*.6

.8

.8

1.1 

2.1

1.6 

.6

3.1

T72

.6

.4

.3

.2

72

.2

25.6

0.85

51

Dec.

1.7

1.3

.7

.6

14

51

7.7

5.7

5.3

4.4

4.2

3.8

3.7

3.4

3.4

4.0

5.5

401

*1,100 

*280

570 

*800

532

136

86

331

*130

62

38

29

27

4,642.4

150

9,210

Jan.

112

52

36

TB

64

50

786

233

150

214

120

74

78

336

413

189

99

72

58 

109

50 

55

45

40

100

200

150

180

90

60

45

4,338

140

8,600

Feb.

35

30

*25

23

21

19

17

14

13

12

12

11

10

9.8

9.5

9.0

9.5

8.8

305 

861

1.270 

759

257

116

202

109

73

81

67

4,388.6

151

8,700

Mar.

51

43

38

36

34

28

25

23

21

*18

17

15

14

13

12

11

11

10

9.8 

9.3

9.0 

8.6

8.1

7.9

7.7

7.4

7.0

6.8

6.8

6.6

T7o

522.0

16.8

1,040

Apr.

6.6

6.2

6.0

5.8

5.6

5.4

5.0

4.8

4.8

5.2

7.9

6.6

5.6

5.4

5.4

5.2

4.7

4.3

4.1 

3.9

3.9 

3.8

378

3.8

*4.3

15

7.4

5.4

4.7

4.1

164.7

5.49

327

May

3.9

3.8

4.1

4.3

5.0

5.6

478

4.3

4.5

4.5

4.3

3.8

3.6

3.4

3.3

3.0

2.9

2.8

2.8 

2.6

2.5 

2.5

2.4

2.4

2.2

2.1

2.1

2.1

2^0

2.1

*2.1

101.8

3.28

202

June

2.1

T79

1.8

1.8

1.8

1.7

1.6

1.5

1.5

1.4

1.4

1.4

.3

.4

.4

.4

.3

1.1

1.3 

1.2

1.1 

1.0

1.0

1.0

.9

.9

.8

.7

.6 

76

38.9

1.30

77

July

0.6

.6

.7

76

.6

.6

.6

.6

.5

.4

.4

.4

.4

.4

.5

.4

.4

.4

.4 

.4

.4 

.2

.2

.2

*.2

.1

.1

.1

.1

.1

.1

11.7

0.38

23

Aug.

' 0.1

3.1

0.1

6.1

Sept.

 0.1

0

l.S

0.05

3.0

Calendar year 1955: Max 1,100 Min 0 Mean 18.8 Ac-ft 13,580

Water year 1955-56 : Max 1,270 Min 0 Mean 38.9 Ac-ft 28,250

Peak discharge (base, 300 cfs). --De

1,800 cfs; Dec. 26 (11 a.m.) 800 cfs

c. 19 (12 m.) 1,820 cfs (10.92 ft); Dec. 21 (about 10 p.m.) 

(7.90 ft); Jan. 7 fl p.m.) 1,390 cfs (9.68 ft); Jan. 15 (1:30

* Discharge measurement or observation of no flow made on this day.

Note. Doubtful or no gage-height record Dec. 19-22, Jan. 21 to Feb. 3, July 26 to Sept. 30; discharge estimated on basis of 5 discharge measurements, trend of record, and records for Adobe Creek 

near Kelseyville and Kelsey Creek near Kelseyville.
SACRAMENTO RIVER BASIN 487

Kelsey Creek near Kelseyville, Calif.

Location. Lat 38°55'45", long 122°50'35", in SE£ sec. 34, T. 13 N., R. 9 W., on left bank 

1.6 miles downstream from Widow Creek and 3.5 miles south of Kelseyville.

Drainage area.--37.2 sq mi.

Records available.--October 1946 to September 1956. December 1945 to September 1946 in 

unpublished reports of Bureau of Reclamation.

Sage.--Water-stage recorder. Altitude of gage is 1,450 ft (from topographic map). Prior 

to July 16, 1955, at site 600 ft upstream at different datum.

Average discharge.--10 years, 68.4 cfs (49,520 acre-ft per year).

Extremes. Maximum discharge during year, 8,800 cfs Dec. 21 (gage height,12.80 ft), from 

rating curve extended above 2,600 cfs on basis of computation of peak flow over dam; 

minimum, 2.3 cfs Oct. 1.

1946-56: Maximum discharge, that of Dec. 21, 1955; minimum, 0.5 cfs Sept. 1, 1950, 

but may have been less during August 1950.

Remarks.--Records good. No storage or diversion above station.

Revisions (water years).--WSP 1285: 1947-48(M), 1950-52(P). WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Feb. 21 Feb. 22 to Sept. 30

2.8

2.9

3.0 

3.2 

3.4 

3.7 

4.0 

4.5 87

5.0

5.5

6.0

7.0

8.0

9.0

10.0

11.0

165

276

418

810

1,420

2,350

3,700

5,400

3.1 

4.4 

5.8 

9.5

3.4 

3.7 

4.0 

4.5

Note. Same as preceding 

table above 4.5 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

£75" 2.4

3.1

3.1

3.1

2.8 

2.8

2.8

3.2

3.9

*4.5

4.5

3.9

3.5

3.5

3.3

3.5

3.4

3.4

4.9

4.9

5.3

*4.2 H

4.2

4.4

4.2

4.2

4.4

4.4

119.3

3.85

237

Nov.

4.5

4TT

4.9

5.0

5.0

5.4 

5.2

4.9

4.7

4.5

4.7

4.9

7.8

9.3

6.6

*7.0

10

8.7

11

13

20

12

25

12

9.6

8.7

8.0

7.8

7.4

261.3

8.71

518

Dec.

10

11

9.1

33 8.5

216 

36

21

22

17

14

13

12

11

10

12

18

1,480

5.120

*1,350

*2,370

*4,260

*2,560 

712

422

1,200

 494

322

226

187

1 eQ AQa

21,335.6

688

42,320

Jan.

360

206

163

381

319

276

810

485

562

391

299

318

788

*824

487

333

262

217

284

217

228

213 

189

475

808

639

765

289

233

193

14,074

454

27,920

Feb.

163

143

*129

118

111

103 

96

90

83

77

74

71

68

64

61

57

57

55

55?

3,200

4,390

3,650

1,210 

590

768

464

518

522

271

17,918

618

35,540

Mar.

221

197

177

167

161

144 

132

124

117

110

103

97

94

*88

83

78

75

73

71

68

65

64

60 

58

57

54

53

52

50

50

2,989

96.4

5,930

Apr.

49

47

46

44

43

43 

41

41

41

41

57

54

46

43

43

41

39

37

36

34

34

32

57 

32

*34

92

6T

48

43

40

1,317

43.9

2,610

May

37

35

37

46

47

IT

44

43

41

40

37

34

32

30

30

28

26

25

24

24

23

23 

23

22

22

21

21

20

*21

977

31.5

1,940

June

21

1?

18

18

17

17 

17

16

15

15

15

15

14

15

15

14

14

14

14

14

13

12

12 

12

11

10

10

9.5

9.3

9T5

425.3

14.2

844

July

9.8

~9.5 10

9.5

9.3

9.1 

8.8

8.6

8.6

8.4

8.0

8.2

9.3

9.8

9.3

8.8

8.0

7,7

8.0

7.3

6.7

6.6

6.6 

*6.4

6.2

6.0

6.1

6.0

6.0

5.8

5.1

243.5

7.85

483

Aug.

4.8

5.5

5.7

5.7

6.4

6.4

6.1

5.4

5.4

5.4

5.2

5.4

5.4

5.2

5.0

5.5

5.7

5.1

5.1

5.1

4.8

4.8

H4.8

5.2

4.8

4.5

4.7

*4.8

5.4

162.5

5.24

322

Sept.

4.5

4.8

4.8

4.3

4.0

H4.7

5.0

5.1

5.0

4.8

4.7

4.5

4.7

5.0

4.8

5.7

575

6.1

5.4

4.7 

4.8

4.8

4.8

5.1

5.0

4.8

5. 2

148.8

4.96

295

Calendar year 1955: Max 5,120 Mln 1.4 Mean 62.8 Ao-ft 59,950

Water er year year 1955-56: 1955-56: Max Max 5,120 5,120____Mln Mln 2.4 2.4____Mean Mean 164 164 Ao-ft Ac-ft 119,000 119,000_____________

eak discharge (base, 1.600 ofs). Dee. 19 (2 p.m.) 7,840 ofs (12.32 ft): Dec. 21 (11:30 p.m.) 

100 ofs (12.80 ft); Dec. 26 (8 a.m.) 2,410 ofs (9.05 ft)j Jan. 7 (4 p.m.) 3,940 ofs (10.15 ft)j 

'. 21 (12 p.m.) 6,410 efa (11.56 ft). 

 Discharge measurement made on this dav.

Peak dlsohar 

8,800 ofs (12

* Discharge measurement made on this day
488 SACRAMENTO RIVER BASIN

Clear Lake at Lakeport, Calif.

Location.--Lat 39°03', long 122°55', In SE^ sec. 24, T. 14 N., R. 10 W. at municipal wharf 

on north side of Third Street in Lakeport.

Drainage area. 528 sq mi, including water surface of lake (65 sq mi). 

Records available. 1874-1900 (incomplete), January 1913 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,318.59 ft above mean sea level, datum of 

1929. Prior to July 8, 1947, staff gage at same site and datum.

Extremes.--Maximum daily gage height during year, 9.64 ft Feb. 26; minimum, 0.03 ft 

Nov. 4-12.

1913-56: Maximum gage height observed, 11.12 ft Jan. 28, 1914; minimum observed, 

-3.50 ft Sept. 24-27, 1920.

Remarks.--This natural lake is regulated by a concrete overflow dam at outlet, completed 

in 1915. Capacity between gage heights 0.00 and 7.56 ft (limits stipulated by court 

decree of 1920), about 319,000 acre-ft. Water is released down natural channel of 

Cache Creek, from which it is diverted for irrigation (see Cache Creek near Lower Lake). 

Records of chemical analyses for the water year 1956 are given in WSP 1453.

Cooperation.--Daily mean gage-height record furnished by Clear Lake Water Co.

Mean gage height, in feet, water, year October;1955 to September 1956

Day

1

2

3

4

5

e

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Got.

0.40

.38

.35

.32

.29

.26

.23

.22

.21

.20

.20

.20

.19

.19

.18

.18

.18

.16

.15

.15

.14

.13

.12

.11

.10

.09

.09

.08

.07

.07

.06

Nov.

0.05

.05

.04

.03

.03

.03

.03

.03

.03

.03

.03

.03

.04

.05

.07

.10

.13

.14

.15

.16

.17

.18

.23

.23

.23

.24

.24

.24

.25

.26

Dec.

0.27

.29

.30

.32

.45

.53

.58

.60

.62

.63

.63

.64

.65

.67

.69

.70

.74

1.12

2.12

2.53

3.05

4.34

5.05

5.38

5.57

5.93

6.05

6.07

6.10

6.04

6.03

Jan.

6.01

5.99

5.95

5.94

5.94

5.95

6.40

6.56

6.71

6.83

6.88

6.92

7.02

7.45

7.92

8.16

8.22

8.23

8.24

-8.25

8.23

8.22

8.23

8.30

8.34

8.50

8.59

8.58

8.57

8.52

8.45

Feb.

8.35

8.25

8.14

8.04

7.94

.84

.74

.62

.51

.40

.30

.22

.17

.14

.12

.12

.14

.15

.34

.82

8.06

8.85

9.37

9.53

9.60

9.64

9.53

9.41

9.37

Mar.

9.26

9.16

9.04

8.97

8.88

8.80

8.61

8.58

8.48

8.33

8.22

8.10

.98

.87

.70

.60

.50

.38

.36

.36

.35

.35

.36

.38

.36

.38

.40

.41

.40

.40

.40

Apr.

.41

.42

.43

.43

.44

.44

.44

.45

.45

.47

.50

.50

.50

.50

.52

.52

.52

.51

.51

.51

.51

.51

.50

.50

.50

.51

.51

.50

.48

.46

May

.43

.41

.41

.40

.40

.39

.37

.35

.31

.28

.23

.22

.20

.19

.19

.18

.17

.16

.13

.11

.09

.08

.05

.03

.00

.97

.93

.92

.89

6.86

June

6.82

6.79

6.74

6.70

6.65

6.63

6.61

6.59

6.55

6.53

6.49

6.45

6.40

6.34

6.30

6.27

6.24

6.21

6.17

6.14

6.12

6.10

6.05

6.01

5.98

5.95

5.92

5.88

5.85

5.80

July

5.76

5.72

5.67

5.62

5.59

5.56

5.53

5.49

5.45

5.42

5.38

5.34

5.30

5.26

5.24

5.20

5.17

5.13

5.10

5.07

5.04

5.00

4.97

4.93

4.88

4.84

4.79

4.74

4.70

4.67

4 1.62.

Aug.

4.55

4.50

4.45

4.40

4.36

4.32

4.29

4.26

4.24

4.20

4.16

4.12

4.08

4.04

4.00

3.97

3.94

3.91

3.89

3.86

3.82

3.79

3.75

3.72

3.69

3.66

3.62

3.59

3.56

3.54

3.51

Sept.

3.48

3.45

3.42

3.39

3.36

3.32

3.28

3.24

3.20

3.16

3.13

3.10

3.09

3.06

3.04

3.02

3.01

3.00

3.00

2.99

2.99

2.98

2.97

2.96

2.93

2.91

2.91

2.90

2.90

2.89
SACRAMENTO RIVER BASIN 489

Cache Creek near Lower Lake, Calif.

Location.--Lat 38°55', long 122°34 T , in sec. 6, T. 12 N., R. 6 W., on left bank 500 ft 

downstream from Clear Lake Dam, 1.5 miles downstream from Copsey Creek, and 2.5 miles 

northeast of Lower Lake.

Drainage area.--528 sq mi, including water surface of Clear Lake (65 sq mi). 

Records available.--May 1944 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,280 ft (from topographic map). 

Average discharge. 12 years, 291 cfs (210,700 acre-ft per year).

Extremes.--Maximum discharge during year, 6,870 cfs Feb. 13 (gage height, 9.11 ft); minimum daily, 0.4 cfs Dec. 3, 4, 7-17.

1944-56: Maximum discharge, that of Feb. 13, 1956; minimum recorded, 0.2 cfs 

Mar. 15-23, 1950.

Remarks.--Records good. Flow completely regulated by Clear Lake. Records of chemical 

analyses for the water year 1956 are given in WSP 1453.

Rating table, water year 1955-56 (gage height, In feet, 

and discharge, In cubic feet per second)

0.0 

.1

1.0

1.3

1.6

2.4

3.5

6.6

11

22

1.6 

Z.O 

2.5

3.0 

4.0 

5.0 

S.O 

7.0 

9.0

38

70

135

22Z

484

980

1,720

2,740

6,050

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

5 

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

51

Total

Mean

Ac- ft

Oct.

72

72

64 

47

25

7.0

1.5

1.2

1.2

*1.1

1.3

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.0

1.0 

1.0

1.0

-JL

314.6

10.1

624

Nov.

0.9

.9

.9 

.9

.8

.8

.8

.8

.7

.7

.7

.7

.6

.6

.6

.6

*.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5 

.5

.5

19.4

0.65

38

Dec.

0.

-^

35'

1.4

1.4

1.6

1,2

1.0

1.0

298

1,550

*1.950 

1,920

1,890

1,900

9,536.4

308

18,920

Jan.

2,040

1,910

1,870 

1,950

1,900

1,870

2,820

2,340

2,310

2,500

2,580

2,530

2,380

2,810

2,920

2,910

2,940

2,940

2,940

5,010

2,970

2,980

2,970

2,960

5,520

5.560

3,390

5,220

5,170

5,140

3,080

83,850

2,704

166,500

Feb.

5,020

*2,960

2,900 

2,860

2,840

2,760

2,720

2,660

2,610

2,560

2,210

1,700

1,330

674

1,070

5.4

4.1

3.5

1,890

4,950

5.050

5,880

5,650

5,560

5,690

5,560

5,480

5,450 

3,420 -

75,407.0

2,600

149,300

Mar.

5.550

3,280

5,220 

3,140

3,120

3,030

2,960

*2,930

2,900

2,850

2,800

2,720

2,700

2,640

2,590

2,550

2,290

1,860

1,230 '

491

452

257

6.8

6.5

6.4

6.6

4.9

5.1 

15

25

14

55,428.1

1,725

106,000

Apr.

5.8

5.1

6.4

4.5

5.6

9.1

24

11

1,1

5.4

5.5

5.5

4.2

5.6

4.2

4.6

4.5

4.2

4.5

4.2

4.8

9.3

99

350

597

506

484

'561 569 

564

3,648.7

122

7,240

May

5S4

560

560 

5SO

560

560

560

574

592

592

592

428

345

266

198

175

175

212

242

255

276

507

509

500

355

543

343

527

514

524

*514

12,062

389

23,920

June

285

271

276

278

27S

276

280

285

312

358

333

394

425

446

434

402

391

385

563

561

586

414

434

434

405

572

577

591

408

425

10,925

564

21,670

July

425

425

405 

408

422

402

394

360

374

383

380

380

377

363

358

358

372

394

411

425

437

434

437

465

478

468

452

*446 

437

428

428

12,746

411

25,280

Aug.

437

440

408 

380

380

348

514

519

519

319

519

552

340

555

566

366

355

540

357

557

537

312

290

290

288

288

285

285 

*512

335

522

10,449

337

20,730

Sept.

304

304

302 

290

278

283

280

262

237

220

202

177

161

142

122

105

93

75

44

22

22

22

22

45

61

70

80

80 

80

70

4,453

148

8,830

Calendar year 1955 : Max 2,510 Mln 0.4 Mean 341 Ac-ft 246,900

Water year 1955-56 : Max 5,030 Mln 0.4 Mean 756 Ao-ft 549,200

* Discharge measurement made on this day.

Note. No gage-height record Nov. 1-16; discharge estimated on basis of recorded range in stage 

and pattern of normal recession.
490 SACRAMENTO RIVER BASIN

North Fork Cache Creek near Lower Lake, Calif,

Location. Lat 39°01', long 122°33', in Nfi£ sec. 31, T. 14 N., R. 6 W., on right bank 

500 ft upstream from Sweet Hollow Creek, 3 miles upstream from mouth, and 7 miles 

northeast of Lower Lake.

Drainage area. 198 sq mi.

Records available.--July 1930 to September 1956.

Gage.--Water-stage recorder. 

Tnary adjustment of 1929.

Datum of gage is 1,035.60 ft above mean sea level, prelimPrior to June 15, 1939, at datum 1.00 ft higher.

Average discharge. 26 years, 184 cfs (133,200 acre-ft per year); median of yearly mean 

discharges, 140 cfs (101,000 acre-ft per year).

Extremes. Maximum discharge during year, 15,900 cfs Dec. 22 (gage height, 12.56 ft); no 

flow Sept. 7-16.

1930-56: Maximum discharge, 20,300 cfs Dec. 11, 1937 (gage height, 13.98 ft, present datum, from floodmarks), from rating curve extended above 7,200 cfs on basis of 

slope-area determination at gage height 13.9 ft for peak of Feb. 28, 1940, and logarithmic plotting; no flow at times during each year 1930-36, 1949-50, 1956.

Remarks.--Records good above 100 cfs and fair below except those for period of no gageheight record, which are poor. Several small diversions above station. Records of 

chemical analyses for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 831: 

1937(M).

1932(M). WSP 1091: Drainage area. WSP 1345:

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Dec. 20, 21)

Oct. 1 to Dec. 22

0.8

.9

1.0

1.1

1.2

1.4

1.6

2.0

2.5

0.6

1.6

3.9

7.8

13

31

56

116

218

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

350

750

1,340

2,160

3,120

4,440

6,280

8,760

Dec. 22 to Feb. 22 Feb. 22 to Sept. 30

3.1 

4.0 

5.0 

6.0 

7.0 

9.0 

11.0

280

580

1,100

1,800

2,800

6,280

11,400

1.7

1.8

1.9

2.0 

2.5

0

1.5

7.3

3.0 

3.5 

4.0 

5.0

6.0

170

280

460

1,030

1,800

Note.--Same as preceding 

table above 6.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.2 

1.1

1.1

1.1

1.1

1.2

1.2

1.1

1.2

1.3

 1,4

1.2

1.1

1.0

.8

.8

.7

.8

.9

1.1

1.1

1.1

1.1

1.0

1.0

1.1

1.1

1.2

1.2

1.3

1.3

33.9

1.09

67

Nov.

1.5

lie

1.6

1.7

1.7

1.6

1.4

1.4

1.4

1.6

1.6

2.8

3.0

2.5

3.3

*3.6

4.2

3.9

3.6

3.6

3.0

3.9

4.9

4.6

3.6

3.6

6.5

8.3

8J3

96.0

3.20

190

Dec.

15 

23

23

18

52

1,060

205

118

150

111

84

69

57

50

47

52

87

1,710

7,740

3,350

*3,090

11.000

*7,820

3,370

1,880

2,950

*1,890

*1,290

878

690

572

50,451

1,627

100,100

Jan.

620

548

472

642

926

750

3,570

3,270

1,940

2,490

2,100

1,650

1,500

4,440

4.900

3,260

1,940

1,580

1,300

1,440

1,220

1,120

1,080

956

1,360

2,570

2,180

1,710

1,380

1,100

890

54,904

1,771

108,900

Feb.

750 

644

*592

548

508

468

442

418

400

382

367

352

346

331

316

298

292

286

350

4,560

6,680

9.050

5,090

2,600

2,030

1,660

1,350

1,220

1,200 ------

43,530

1,501

86,340

Mar.

1.010 

878

818

758

740

635

560

492

*452

408

360

344

331

319

307

298

292

286

274

268

259

253

244

236

228

228

218

212

206

200

196

12,310

397

24,420

Apr.

192

184

180

172

164

156

148

145

139

136

164

170

143

134

129

124

113

106

101

95

91

87

85

84

IT

*132

132

101

89

85

3,868

129

7,670

May

80 

77

81

91

99

115

121

103

96

95

91

84

73

68

61

61

59

56

55

51

48

43

40

39

11

39

41

43

42

41

*41

2,071

66.8

4,110

June

&

37

36

35

35

34

33

29

30

30

29

28

28

29

28

27

25

23

23

21

21

21

20

20

18

17

15

13

10

796

26.5

1,580

July

10 

13

12

10

8.7

7.3

7.3

6.1

5.1

5.1

3,0.

3.0

3.6

3.6

3.0

3

3

3

3.5

3.5

4

4.5

5

*5

5

4.5

4.5

4.5

4

4

4

165.8

5.35

329

Aug.

4 

3~. 5

3.5

3.5

3.5

3.5

3

3

3

3

3

2.5

2.5

2.5

2.5

2.5

2.5

2.5

2

2

2

2

2

2

2

2

2

2

*2.1

2.5

2.5

81.1

2.62

161

Sept.

3^0. 

3.0

3.0

1.9

1.1

.8

0

0

0

0

0

0

0

0

0

0

.4

.9

1.3

1.3

1.1

1.1

1.1

.8

.8

.8

.8

.8

.6

.4

25.0

0.83

50

Calendar year 1955: Max 11,000 Mln 0.3 Mean 188 Ac-ft 135,900

Water year 1955-56: Max 11,000 Min 0 Mean 460 Ac-ft 333,900

Peak discharge (base. 2,600 cfs). Dee. 19 (5 p.m.) 10,100 cfs (10.53 ft): Dec. 22 (2:30 a.m.) 

15,900 cfs (12756 ft); Dec. 26 (lla.m.) 4,560 cfs (8.12 ft); Jan. 7 (6 p.m.) 8,140 cfs (9.76 ft); 

Jan. 15 (4:30 p.m.) 5,880 cfs (8.81 ft); Jan. 26 (9 a.m.) 3,740 cfs (7.64 ft); Feb. 22 (5 a.m.) 

10,600 cfs (10.72 ft).

* Discharge measurement made on this day.

Note. Ho gage-height record July 16 to Aug. 28; discharge estimated on basis of 2 discharge measurements and a gradual recession.
SACRAMENTO RIVER BASIN 491

Cache Creek near Capay, Calif.

Location.~Lat 38°43'40", long 122°06'15", in Canada de Capay Grant, in Yolo County, on 

right bank 1.8 miles upstream from Clear Lake Water Co.'s diversion dam, 3.2 miles 

northwest of Capay, and 5.4 miles northwest of Esparto.

Drainage area. 1,052 sq mi.

Records available. May 1942 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 240 ft (from topographic map).

Average discharge 14 years, 564 cfs (408,300 acre-ft per year); median of yearly mean 

discharges, 400 cfs (290,000 acre-ft per year).

Extremes. Maximum discharge, during year, 31,800 cfs Dec. 22 (gage height, 17.54 ft); from 

rating curve extended above 18,000 cfs; minimum, 3.6 cfs Nov. 12.

1942-56: Maximum discharge, 35,000 cfs Jan. 21, 1943 (gage height, 17.54 ft), from 

rating curve extended above 6,300 cfs on basis of 1956 rating defined to 18,000 cfs; 

minimum, 2.2 cfs Sept. 11, 12, 16, 1947.

Remarks. Records good. Flow regulated by Clear Lake beginning in 1915 (see p. 488). 

About 3,700 acre-ft diverted annually between stations near Lower Lake and near Capay 

for irrigation of approximately 900 acres, from data furnished by U. S. Soil Conservation Service. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Revisions (water years). WSP 1395: 1943.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Nov. 5 to Dec. 6)

Oct. 1 to Dec. 19 Dec. 19 to Jan. 7 Jan. 8 to Sept. 30

0.8 

.9

1.0

1.1

1.2 

1.4 

1.6 

2.0

3.0

5.0

8.0

12

18

57

65

150

2.5

3.0

5.0

7.0

9.0

11.0

13.0

15.0

310

525

1,590

3,160

5,320

8,400

12,500

19,400

6.9

8.0

10.0

12.0

14.0

16.0

2,680

3,500

5,900

9,700

15,600

23,800

1.6 

2.0 

2.5 

3.0 

3.5 

4.0

23

41

97

201

350

570

850

6.0

8.0

10.0

12.0

14.0

16.0

2,310

4,170

6,880

11,000

16,900

24,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

60

59

65

6?

58

42

45

24

19

*18

17

14

13

12

12

10

14S7§

8.8

10

11

10

11

12

12

13

13

13

13

11 

11

696.0

22.5

1,380

Nov.

11

TT

9.6

8.4

8.8

7.4

7.1

7.1

5.9

5.9

5.9

5.3

5.9

*5.3

5.3

5.9

5.9

5.6

5.3

5.0

4.8

478 

4.8

4.8

4.8

5.3

5.9

6.2

6.2

6.5

191.7

6.39

380

Dec.

7.4

574

9.2

11

13

405

526

217

145

158

123

99

81

70

*62

58

58

117

»14,800

*10,300

*3,370

20,400 

14,900

6,300

3,280

6,010

4,120

*4,020

5,350

3,060 

2,910

99,288.0

3,203

196,900

Jan.

3,100

2,910

2,720

2,690

3,180l

2,880

5,380

10.600

5,530

5,500

5,610

4,740

4,300

7,620

9,330

9,040

6,300

5,400

4,900

5,000

4,890

4,570 

4,540

4,290

5,710

8,880

8,530

6,740

5,640

5,190

4,890

170,620

5,504

338,400

Feb.

4,610

4,400

4,240

4,060

3,930

3,760

3,620

3,510

3,400

*3,320

3,250

2,390

2,000

1,730

1,480

784

390

358

555

12,600

*16,500

23.800 

*15,600

*9,440

8,230

7,730

6,970

6,310

5,990

164,937

5,687

327,100

Mar.

5.660

5, 350

5,100

4,860

4,680

4,500

4,290

4,130

3,990

3,860

3,720

3,550

3,450

3,330

3,280

3,200

3,140

2,640

2,340

1,270

1,090

1,060 

595

466

426

402

378

358

343

332 336"

82,126

2,649

162,900

Apr.

315

300

*288

282

270

*255

247

247

241

227

244

300

276

247

241

235

219

209

196

191

184

179 

175 55"!

462

655

712

778

77?

760

9,968

332

19,770

May

754

748

748

766

766

784

784

784

778

790

778

754

520

488

370

309

285

276

3T7

332

343

366 

 394

370

374

394

402

402

378

374 

390

16,313

526

32,360

June

362

336

322

326

322

318

315

318

322

350

398

410

426

466

480

462

418

414

*402

378

378

398 

434

444

434

386

370

374

382

414

11,559

385

22,930

July

422

426

426

406

422

418

402

402

370

374

378

374

*386

374

358

354

350

366

394

406

422

430 

414

430

462

466

114

434

439

418 

414

12,581

406

24,950

Aug.

414

454

430

394

382

374

*322

300

306

505

505

509

518

522

552

543

546

329

526

526

526

522 

291

270

275

270

267

570

267

*294 

512

10,075

325

19,980

Sept.

294

27?

276

270

261

255

258

252

258

214

201

187

166

147

155

119

102

99

89

77

54

58 

29

27

*24

29

42

56

65

64

4,543

145

8,610

Calendar year 1955: Max 20,400 Mln 4.8 Mean 478 Ac-ft 345,800

Water year 1955-56: Max 23,800 Mln 4.8 Mean 1,592 Ac-ft 1,156,000
492 SACRAMENTO RIVER BASIN

Cache Creek at Yolo, Calif.

Location. Lat 38°43'30", long 121°48'25", in Rio Jesus Maria Grant, on left bank 800 ft

upstream from highway bridge and 0.5 mile south of Yolo, Yolo County. 

Drainage area. 1,137 sq mi.

Records available.--January 1903 to September 1956. 

Gage.--Water-stage recorder. Datum of gage is 52.27 ft above mean sea level, adjustment of

1929. Prior to summer of 1930, staff gage at datum 5.97 ft higher. Summer of 1930 to

June 11, 1954, water-stage recorder at same site at datum 4.00 ft higher. 

Average discharge. 53 years, 512 cfs (370,700 acre-ft per year). 

Extremes.--Maximum discharge during year, 27,400 cfs Feb. 23 (gage height, 30.00 ft); no

flow for several months.

1903-56: Maximum discharge, 28,700 cfs plus overflow on right bank estimated as

10,000 cfs Feb. 28, 1940 (gage height, 33.0 ft, present datum); no flow at times each

year.

Maximum stage observed, 34.2 ft (present datum) Mar. 10, 1904. 

Remarks.--Records good except those below 130 cfs, which are fair. Flow regulated by Clear

Lake beginning in 1915 (see p. 488). Diversions for irrigation of up to about 30,000

acres between stations near Capay and at Yolo, from data furnished by Clear Lake Water

Co. 

Revisions (calendar years). WSP 1121: Drainage area. WSP 1345: 1906. Revised figures

of discharge, in cubic feet per second, for the water year 1955, superseding those cublished in WSP 1395, are given herewith:

1955

Apr. 22......... 300

23 ......... 300

24......... 250

25......... 250

26......... 250

27. ........ 30O

1955-Con. 

Apr. 28......... 25O

29......... 250

30......... 20O

May 2OO 

100

Water year 1954-55 ..........

Cfs-days

2,350

350

Maximum

300

200

943

Minimum

0

0

0

Mean

78.3

11.3

42.7

Runoff in 

acre-feet

4,660

694

30.920

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

(*)

o

0

0

Nov.

0

0

0

Dec.

0

*o

0

0 

0

0

83

17

0

0

0

*0

0

0

0

0

0

0

*5,660

*13,3CC

*3,790

*14,200

*16,900

8,770

3,720

4,940

5,470

*4,320

3,670

3,260

3,090

91,190

2,942

180,900

Jan.

3,220

3,280

2,860

2,720 

3,440

3,220

3,370

10,700

5,720

5,270

5,940

*4,910

4,37O

6,590

9,440

9,370

6,650

5,610

*4,990

5,O80

5,110

4,680

4,700

4,420

6,430

8,690

10,000

7,720

6,160

5,460

4,990

175,110

5,649

347,300

Feb.

4,580

4,310

4,120

3,960 

3,860

3,700

3,540

3,410

3,280

*3,200

3,110

2,480

2,140

1,810

1,230

1,450

634

544

520

7,62~0

* 17, 000

18,800

*21,900

11,500

8,940

8,260

6,960

6,440

6,220

165,518

5,708

328,100

Mar.

5,900

5,640

5,420

5,190 

5,000

4,820

4,530

4,370

*4,230

4,110

3,980

3,780

3,670

3,590

3,460

3,350

3,280

2,920

2,450

1,670

1,170

1,080

870

644

560

500

456

334

337

322

507

88,000

2,839

174,500

Apr.

289

265

250

235 

211

175

145

133

112

91

73

145

187

166

175

*169

151

58

28

32

6.0

6.0

4.0

4 .0

88

223

380

372

412

400

4,985.0

1G6

9,890

May

392

384

*364

356 

372

376

400

388

372

356

344

340

319

247

166

65

12

1.5

0

0

0

0

*0

0

0

0

0

0

0

0

0

5,254.5

170

10,420

June

(*)

0

0

0

July

0

0

0

Aug.

(*)

(*)

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 16,900 Min 0 Mean £76 Ac-ft 199,900

Water year 1955-56: Max 21,900 Win 0 Mean 1,448 Ac-ft 1,051,000

Peak discharge (base, 2,200 cfs).--Dec. 20 (5 a.m.) 18,700 cfs (25.93 ft); Dec. 22 (6:30 p.m.) 

22,500 cfs (28763 ft); Dec. 26 (9 f.m.) 9,500 cfs (17.46 ft); Jan. 1 (9 p.m.) 3,840 cfs (10.48 ft); 

Jan. 5 (l p.m.) 3,810 cfs (10.44 ft); Jan. 8 (8 a.m.) 16,000 cfs (23.84 ft); Jan. 11 (5 a.m.) 6,270 

cfs (13.58 ft); Jan. 16 (5 a.m.) 10,900 cfs (19.07 ft); Jan. 20 (10 p.m.) 5,660 cfs (12.81 ft); 

Jan. 26 (11 p.m.) 12,700 cfs (2O.86 ft); Feb. 13 (6:30 a.m.) 3,630 cfs (10.20 ft); Feb. 16 (4 a.m.) 

3,200 cfs (9.62 ft); Feb. 23 (3 a.m.) 27,400 cfs (30.00 ft).

* Discharge measurement or observation of no flow made on this day.
SACRAMENTO RIVER BASIN 493 

Yolo bypass near Woodland, Calif.

Location.--Lat 38°40'40", long 121°38'35", on left bank just upstream from Sacramento and 

Woodland Railroad bridge, 6 miles upstream from Sacramento bypass, 7 miles downstream 

from Fremont weir, and 7 miles east of Woodland, Yolo County.

Records available.--October 1940 to September 1956 in reports of Geological Survey. March 

to October each year 1930-38, 1939-56 in reports of California Department of Water Resources .

Gage.--Water-stage recorder. Gage is set to datum of Corps of Engineers. Prior to

Dec. 17, 1941, staff gage and Dec. 18-31, 1941, water-stage recorder, at datum 0.73 ft 

higher. Supplementary water-stage recorder 6 miles downstream at same datum.

Average discharge.--16 years, 3,927 cfs (2,843,000 acre-ft per year).

Extremes. Maximum discharge during year, 253,000 cfs Dec. 23 (gage height, 31.60 ft); minimum, 2.1 cfs Nov. 13.

1940-56: Maximum discharge, 272,000 cfs Feb. 8, 1942 (gage height, 32.00 ft); minimum observed, 0.4 cfs Mar. 31, 1955.

Remarks. Records fair. Flow is that from Cache Creek and Knights Landing Ridge Cut plus 

floodwater passing over Fremont weir; during summer, flow consists largely of return 

water from irrigation.

Cooperation. Records collected and prepared in cooperation with California Department of 

Water Resources.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

22

IT

19

19

17

*15

15

14

14

14

12

13

*12

11

11

10

10

9.0

9.0

9.0

8.1

8.1

8.1

7.6

7.2

7.6

*7.6

7.6

7.6

8.6

9.0

363.1

11.7

720

Nov.

8.6

8 .6

8.1

8.1

7 .2

7.6

7.2

7.2

7.2

*6.8

7.2

6.3

4.5

7.6

7.2

8.1

8.6

8.1

7.6

7.2

7.6

7 .2

fl.l

7.6

7.6

8.6

Q.I

8.6

8.6

*8.6

229.6

7 .65

455

Dec.

10 9.6

alO

alO

a 15

a 15

a20

a20

*20

21

23

30

33

32

*29

27

28

27

189

10,000

*53,200

105,000

250.000

"163,000

119,000

153,000

*161,000

162,000

147,000

119,000

89,800

(e)

48,790

*3,000

Jan.

67,600

56,800

50,000

45,400

43,000

43,000

40,400

42,800

40,800

41,400

*41,600

39,800

59.000

42,000

68,400

125,000

152,000

144,000

124,000

103,000

87,100

75,800

71,900

71,300

73,100

75,500

80,300

81,500

75,500

*65,300

55,800

$2,163.1

69,780

*4,290

Feb.

46,800

38,600

31,400

25,500

19,500

13,600

9,200

6,780

5,630

5,100

4,730

4,420

3,780

3,130

2,410

2,190

*1,590

*999

915

1,840

11,900

18,900

31,000

72,500

84,800

77,000

*64,100

53,500

46,200

688,014

23,720

*1,365

Mar.

41.400

35,200

28,200

23,100

17,800

* 13, 600

9,280

6,330

5,210

4,860

4,800

4,500

4,360

4,350

*4,220

4,080

3,950

3,820

3,380

2,790

1,790

1,560

1,470

1,070

947

890

851

775

773

809

794

236,957

7,644

470,000

Apr.

890

1.050

*1,020

746

516

393

329

313

277

253

259

296

*328

453

566

538

450

346

274

*224

188

176

170

180

170

170

176

267

434

442

11,874

396

23,550

May

384

328

336

375

380

622

1,500

1,680

1,800

*1,860

1,880

1,920

1,880

*1,750

1,620

1,520

1,450

1,410

1,400

1,420

1,460

1,480

1,490

1,510

1,550

1,520

1,520

1,430

1,250

1,180

1,020

40,925

1,320

81,170

June

800

648

540

464

411

*378

322

270

240

272

264

224

*16

6.8

8.1

12

23

40

32

19

24

22

25

25

25

23

19

9.4

8.8

8.1

5,179.2

173

10,270

July

8.8

7.4

7.4

7.4

6.2

7.4

7.4

6.8

6.8

5.1

4.7

*4.3

473

4.3

8.8

11

9.4

*14

24

5i

20

14

12

11

11

11

11

9.4

8.1

8.1 

8.8

313.9

10.1

623

Aug.

 974 8.8

18

23

24

43

*50

38

46

43

17

12

21

26

34

41

*30

29

31

40

40

38

40

38

32

30

31

32

30

28 

29

952.2

30.7

1,890

Sept.

30

30

32

35

37

38

55

62

60

55

57

57

58

81

84

73

48

*49

*74

98

108

147

T39

108

91

76

68

68

45

31

1,994

66.5

3,960

Calendar year 1955 : Max 230,000 Mln 0.4 Mean 4,190 Ac-ft 3,033,000

Water year 1955-56 : Max 230,000 Min 4.3 Mean 12,740 Ac-ft 9,248,000

* Discharge measurement made on this day.

* Expressed In thousands.

a No gage-height record; discharge Interpolated.

e Total cfs-days 1,512,568.6.
494 SACRAMENTO RIVER BASIN 

Putah Creek near Guenoc, Calif.

Location. Lat 38°46'45", long 122°31'00", In Guenoc land grant, on right bank just upstream from Coyote Valley dam site, 2.8 miles upstream from Soda Creek, 3.2 miles downstream from highway bridge at Guenoc, Lake County, and 5.6 miles northeast of Middletown.

Drainage area. 112 sq ml.

Records available.--February 1904 to July 1906, July 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 913.4 ft above mean sea level (river-proflie 

survey). February 1904 to July 1906 staff gage a quarter of a mile upstream at different datum.

Average discharge. 26 years (1930-56), 196 cfs (141,900 acre-ft per year); median of 

yearly mean discharges, 151 cfs (109,000 acre-ft per year).

Extremes. Maximum discharge during year, 29,200 cfs Dec. 22 (gage height, 21.80 ft), from 

rating curve extended above 13,000 ft; minimum daily, 0.3 cfs Oct. 17.

1904-6, 1930-56: Maximum discharge, 32,000 cfs Dec. 11, 1937 (gage height, 22.7 ft), 

from rating curve extended above 7,200 cfs by logarithmic plotting; minimum, 0.3 cfs 

Sept. 2, Oct. 17, 1955.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Diversions and ground-water withdrawals for irrigation of about 1,600 acres above 

station.

Revisions (water years).--WSP 1285: 1937(M), 1938, 1940, 1943(M), 1951(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 7 Jan. 7 to Sept. 30

0.8 

.9

1.0

1.1

1.2

1.3 

1.5 

1.7 

1.9 

2.2

0.2 

.6

62

2.5

3.0

4.0

5.0

6.5

8

10

12

14

16

100

190

406

724

1,420

2,440

4,420

7,120

10,500

14,300

0.4 

1.1 

2.0 

3.2

2.0 

2.5 110

3.0

3.5

4.0

5.0

6.0

8.0

10.0

12.0

14.0

200

305

450

780

1,230

2,680

4,730

7,200

10,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.8

.8

1.0

.8

.6

.5

.5

.8

.6

*1.0

1.3

1.3

.9

.6

.6

.5

.3

.4

.4

.4

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

19.3

0.62

38

Nov.

~0.5

.7

.7

.7

.7

.7

.6

.6

.6

.7

.7

1

1

1

1.5

*1.5

2

2

1.5

1.5

1.5

2

2

2

1.5

1.5

2.5

3^

3.5

40.8

1.36

81

Dec.

15

25

25

20

100

1,400

200

110

140

110

80

20

50

45

45

45

200

2,000

7,500

3,500

*3,000

14.000

7,000

3,000

1,500

*4,000

1,460

*903

652

533

514

52,197

1,684

103,500

Jan.

971

632

490

1,170

1,230

880

4.550

2,290

1,380

1,970

1,310

956

1,010

2,700

*2,760

1,620

1,060

848

705

900

705

691

649

570

2,440

2J890

2,270

1,400

980

788

649

43,444

1,401

86,170

Feb.

540

*474

420

375

342

312

288

270

254

244

234

226

216

206

198

190

184

180

907

*8,780

6,290

10.400

3,760

1,720

2,340

1,400

1,030

900

812

43,492

1,500

86,270

Mar.

660

57T

528

498

474

426

375

*345

315

290

270

252

240

228

214

204

194

186

176

171

164

158

149

144

137

133

126

123

120

115

115

8,104

261

16,070

Apr.

108

104

101

96

94

89

88

84

81

82

112

135

106

95

92

89

85

78

74

67

65

62

60

59

61

*175

192

TZ5

100

89

2,843

94.8

5,640

May

81

74

74

131

155

173

148

121

107

100

95

88

81

74

68

65

61

57

56

55

53

48

47

46

45

41

40

39

37

56

11

2,508

74.5

4,580

June

*54

55

32

50

30

30

26

25

24

22

21

20

20

20

19

18

18

16

14

14

13

12

12

10

9.9

10

9.9

8.8

8.6

lil

568.5

19.0

1,130

July

lil

8.0

8.0

6.6

5.9

6.1

6.1

6.6

5.7

5.5

5.5

5.7

6.3

5.7

6.8

6.6

5.5

4.8

5.2

5.5

5.0

5.5

3.5

1.2 *3T?

5.6

3.1

3.0

3.0

3.0

3.4

162.5

5.24

322

Aug.

4.0

4.0

3.5

3.7

4.5

3.0

2.4

2.5

2.2

2.2

2.1

3.4

3.5

2.0

1.8

2.4

2.0

1.3

3.4

2.6

2.2

2.5

1.8

2.4

2.4

1.2

1.4

2.0

1.9

* .8

ITT

76.2

2.46

151

Sept.

0.8

1.3

1.6

.9

1.3

1.4

1.4

1.5

1.6

1.7

1.3

1.5

1.6

1.6

.-I

.8

1.4

.8

1.0

.8

1.0

.8

.8

.9

.8

.7

.9

.7

.8

1.4

33.8

1.13

67

Calendar year 1955: Max 14,000 Mln 0.3 Mean 193 Ac-ft 139,900

Water year 1955-56: Max 14,000 Mln 0.3 Mean 419 Ac-ft 304,000

Peak discharge (base, 5.000 cfs).--

(2 a.m.) 29,200 cfs (21.80 ft); proba 

8,990 ofs (13.18 ft); Feb. 20 (9 p.m.

Probably Dec. 19 (time unknown) 15,600 cfs (16.60 ft); Dec. 22 

bly Dec. 26 (time untaown') 7,770 cfs (12.42 ft); Jan. 7 (4 p.m.) 

) 14,200 ofs (15.93 ft) . * Discharge measurement made on this day.

Note. No gage-height record Oct. 16 to Dec. 26; discharge estimated on basis of 3 discharge measurements, records for North Pork Cache Creek near Lower Lake, recorded range In stage, and floodmarks.
SACRAMENTO RIVER BASIN 495

Putah Creek near Winters, Calif.

Location.--Lat 38°31', long 122°05', in NE£ sec. 28, T. 8 N., R. 2 W., on left bank 

6 miles west of Winters and 8 miles downstream from Capell Creek.

Drainage area. 577 sq ml.

Records available. June 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 160.75 ft above mean sea level (riverprofile survey). June 28, 1930, to Feb. 29, 1940, at datum about 1 ft higher.

Average discharge. 26 years, 477 cfs (345,300 acre-ft per year)..

Extremes.--Maximum discharge during year, 55,400 cfs Dec. 22 (gage height, 26.73 ft), from 

rating curve extended above 30,000 cfs by logarithmic plotting; minimum, 0.1 cfs

1930-56: Maximum discharge, 81,000 cfs Feb. 27, 1940 (gage height, 30.5 ft, present 

datura), from rating curve extended above 30,000 cfs by logarithmic plotting; no flow 

Sept. 6-15, 1950, July 26 to Sept. 1, Sept. 6-9, 1955.

Maximum stage known since at least 1905, that of Feb. 27, 1940, on basis of records 

for station at Winters.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Low-water records are not equivalent to records at Winters or near Davls. Plow partly 

regulated by Lake Berryessa, now under construction. Diversions for irrigation of 

about 250 acres between stations near Guenoc and near Winters In addition to those In 

Berryessa Valley. Records of chemical analyses for the water year 1956 are given in 

WSP 1453.

Revisions (water years). WSP 901: 1937-38(M). WSP 1285: Drainage area, 1932(M), 1935- 

36(MJ, 1940(M), 1942-43(M), 1951, 1952(M).

Rating tables, water year 1955-56 (gage height, In feet, ana discharge.

In cubic feet per second) 

(Shifting-control method used Oct. 18 to Dec. 6)

Oct. 1 to Feb. 22 Feb. 23 to Sept. 30

3.2

3.3

3.4

3.5

3.6

4.0

4.4

4.8

5.2

5.6

0.1

.4

1.0

2.0

3.4

14

34

63

104

158

6.0

7.0

8.0

9.0

10.0

18.0

14.0

17 «0

20.0

23.0

224

460

796

1,260

1,890

3,800

13 500

23,500

56,000

3.8

3.9 

4.2 

4.6 

5.0 

5.5

8.0

10

21

46

78

142

i.--Sam 

"above

6.0

7.0

8.0

9.0

10.0

18.0

224

442

745

1,170

1,820

3,800 ir«oe<lln8

ft.

Discharge, in oubio f«et per aeoond, water year October 1955 to September 1956

Day

1 

2

5

4 

5

6

7 

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oot.

1.1 

1.1 

1.2

1.5 

1.5

1.2

.9 

.7

.6

.4

.5

*

.2

.2

.3

.2

.3

.5

.9

1.5

1.4

1.3

1.3

1.3

1.7

1,5

1.3

1.1

.8

27. S

0.89

55

Nov.

1.4 

1.8 

1.2

TT7J

1.0

1.5 

1.5 

2.0

3.0

5.0

3.0 

3.5

4.5

»5.2

5.0

4.0

3.0

3.0

3.5

5.0

4,5

4.3

3.9

3.9

3.6

3.8

3.9

4.3

4.7

95.0

3.17

188

Deo.

4.8 

5.0 

4.7

Ire

»6.6

118 

107 

56

40

36

32 

26

22

»20

20

21

40

»14,400

»2l,100

*9,610

55.500

33,700

*L4,200

4,890

8,060

8,530

2,890

1,980

1,540

1,460

158, 482.2

5,110

314,200

Jan.

1,720 

1,850 

1,340

1.170 

27555

'2,060

3,740 

9,840 

3,560

3,340

5,440

»2,600 

2,100

3,500

7,000

6,400

3,200

2,520

2,040

2,450

2,320

1,920

2,060

1,650

7,490

»8,700

9,110

6,670

3,750

2,830

2,300

115,660

3,731

229,400

Feb.

1,920 

1,640 

1,470

1,530 

1,220

1,100

1,010 

950 

855

809

768

729 

689

632

583

542

515

500 sti

12,500

*18,400

22.700

19,466

8,880

5,460

5,670

3,300

2,640

2,480

119,496

4,121

237,000

Mar.

2.010 

1,720 

1,520

1,410 

1,550

1,230

1,100 

1,010 

»950

894

829

770 

734

703

654

622

604

577

553

536

514

494

471

450

426

411

392

380

370

361

354

24,399

787

48,390

Apr.

342 

331 

318

307 

298

290

278 

272 

264

256

309

458

311

290

 280

262

242

224

215

206

200

198

ill T97J

204

366

333

260

231

8,291

276

16,440

May

211 

196 

192

240 

500

292

2"58" 

256

238

224

211 

195

179

169

161

150

140

130

130

126

120

*108

103

98

92

88

90

84

85

ft! Si

5,299

171

10,510

June

74

70 

67

65

64 

61 

59

50

50

50 

48

47

36

37

36

37

37

»37

36

31

29

25

27

23

20

18

16

15

1,317

43.9

2,610

July

14

a15 

15

15

15 

14 

14

13

12

12

12

12

12

11

12

11

11

10

10

10

9.8

1*4

9.6

9.4

11

10

11

10

370.2

11.9

734

Aug.

9.8 

10 

9.8

10 

10

10

10 

ft

9.8

9.4

11w9.4

9.6

10

10

9.8

11

10

10

9.6

9.6

10

9.8

9.4

9.4

9.4

9.4

306.2

9.88

607

Sept.

9.4 

9.2

8.8

8.8 

8.6

8.4

8.6 

8.8 

8.8

8.8

8.6

8.8 

9.4

9.4

9.8

9.0

9.8

9.2

11

11

4, T^.2

9.2

9.6

8.4

8.2

8.4

9.0

8.8

8.0

275.0

9.17

545

Calendar year 1955: Max 35,500 Mln 0 Mean 513 Ao-ft 371,600

Water year 1955-56: Max 35,500 Kin 0.2 Mean 1,186 Ao-ft 860,700

* Discharge measurement made on this day. 

Mote. No gage-height record Nov. 4-14, 16-22, Jan. 12-16; discharge estimated on basis ofrecorded 

range In stage and records for station near Davls.
496 SACRAMENTO RIVER BASIN

Putah Creek near Davls, Calif.

Location. Lat 38°31'24", long 121°47'10", in SE^ sec. 19, T. 8 N., R. 2 E., in Los Putos 

Grant, on right bank 3.3 miles southwest of Davis and 9.9 miles east of Winters.

Drainage area.--636 sq mi.

Records available. May 1948 to September 1956.

Gage. Water-stage recorder. Alttiude of gage is 45 ft (from topographic map). Prior to 

Dec. 16, 1948, at datum 2.00 ft higher.

Average discharge.--8 years, 492 cfs (356,200 acre-ft per year).

Extremes.--Maximum discharge during year, 46,600 cfs Dec. 22 (gage height, 24.36 ft); no 

flow for several months.

1948-56: Maximum discharge, that of Dec. 22, 1955; no flow for several months each 

year.

Remarks.--Records good. Flow regulated by Lake Berryessa (dam not completed) in 1955-56. 

Low-water records are not equivalent to records at Winters or near Winters. Several 

pumps above station at times furnish supplemental irrigation water for about 200 acres 

between stations near Winters and near Davis.

Cooperation. Four discharge measurements furnished by California Department of Water Resources.

Revisions (water years).--WSP 1285: Drainage area, 1949(M), 1951.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

(*)

0

0

0

Nov.

(*)

(*)

0

0

0

Dec.

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

*0

0

0

0

7,100

*22,500

*10,300

*30,500

*52.500

* 18, 000

6,650

5,960

9,440

3,610

2,140

1,610

*1,420

151,730

4,895

301,000

Jan.

1,400

1,900

1,290

1,070

2,380

2,060

2,220

10,000

3*420

3,900

*2,530

1,980

3,840

6,940

6,640

3,600

2,580

*2,030

2,200

2,470

1,790

2,000

1,580

6,180

*8,700

9,280

7,810

4,400

3,080

2,380

116,730

3,765

231,500

Feb.

1,890

1,530

1,310

1,160

998

878

758

668

594

542

510

474

432

396

346

310

290

276

300

9,230

*18,600

20,000

*25.000

* 10, 600

5,190

6,270

3,490

2,710

2,460

115,212

3.973

228,500

Mar.

2,090

1,780

1,600

1,470

1,400

1,290

1,140

1,050

*983

920

844

778

742

706

658

628

604

568

544

520

502

478

460

430

415

*395

385

365

355 

345

550

24,775

799

49,140

Apr.

525

515

310

295

290

*280

270

260

250

245

270

405 3~90

310

285

*270

255

250

201

192

182

174

169

161

157

178

265

350

260 

216

7,760

259

15,390

May

192

178

*174

192

265

500

505

510

275

245

225

211

192

169

*161

148

155

122

115

108

104

98

*90

84

74

74

66

65

*61

57 

59

4,850

156

9,620

June

49

52

50

44

42

37

*36

31

27

27

25

20

22

20

19

15

7.4

7.4

4.5

4.2

*4.0

2.6

1.7

.5

*P_

0

0

0

0 

0

544.5

18.1

1,080

July

(*)

0

0

0

Aug.

*0

0

0

0

0

0

0

0

0

0

0

.1

.1

0

0

0

.4

.6

0

0

0

0

0

0

0

0

0

0

0 

0

o

1.2

0.04

2.4

Sept.

0

0

.4

.4

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0.8

0.03

1.8

Calendar year 1955: Max 32,500 Mln 0 Mean 488 Ac-ft 353, 5OO

Water year 1955-56: Max 32,509 Min o Mean 1,152 Ac-ft 836,200

Discharge measurement or observation of no flow made on this day.
SACRAMENTO RIVER BASIN 

Clear Creek seepage investigation, Calif

A series of discharge measurements was made on June 4, 28, July 23, Aug. 23, Sept. 17, and Oct. 24, 

the gaging station near Igo and a point above the Anderson-Cottonwood Irrigation District siphon 1.4 m

periods of fairly, although not necessarily, constant stage of the creek.

Miles

mouth

1.4

Location

Above Anderson-Cottonwood Irrigation District siphon. .........

Over-all net gain or loss .....................................

June 4

Meas. 

disch.

186

, 1956

Gain 

or 

loss

+12.0

+7.2

June 28

Meas. 

disch.

81.9

D

, 1956

Gain 

or 

loss

_

_

+8.8

+14.0

Note.--As affected by small inaccuracies inherent in measurements of main stream, indicated gains or 
SACRAMENTO RIVE

Cottonwood Creek seepage in

A series of discharge measurements was made on June 27, July 25, an

In length, between the confluence of the Middle and North Porks and th

made during periods of fairly, although not necessarily, constant stag

one starting at mile 7.6.

Mllea 

above 

mouth

19.5 

17.5

15.4 

12.4

9.7 

7.6 

7.6

5.2 

2.4

Location

Gaging station near Cottonwood. ...............................

Over-all net gain or loss .....................................

Note. As affected by small inaccuracies Inherent In measurements o

in error. Channel clearing operations were performed in August and Se
SACRAMENTO RIVER 

Red Bank Creek seepage inves

A series of discharge measurements was made on Apr. 23, June 9, Sept

14.7 miles in length, between the Department of Water Resources, State 

U. S. Highway 99W, 1.0 mile above mouth. The Investigations were made 

stage of the creek.

Miles 

above 

mouth

15.7

11.3 

5.3 

3.0 

1.0

Location

Department of Water Resources, State of California gaging 

station near Foothill.

At bridge on U. S . Highway 99W. ..............................

Over-all net gain or loss ....................................

** Field estimate.

Note. As affected by small Inaccuracies inherent In measurements of 

in error.
SACRAMENTO RIVER B

Antelope Creek seepage inves

A series of discharge measurements was made on June 6, 26, July 26, A

4.0 miles in length, between the gaging station near Red Bluff and a poi

Investigations were made during periods of fairly, 'although not necessar

Miles

mouth

7.9

6.3 At Cone Grove Road ...........................

Over-all net gain or loss ....................

June 6

Meas . 

disch.

63.3

, 1956

Gain

or 

loss

+2.3

+10.3

J

M

d

** Field estimate.

Note. As affected by small inaccuracies inherent in measurements of m

in error.

Mill Creek seepage investi

Miles 

above 

mouth

5.5 

2.7

.8

Location

Department of Water Resources, State of California gaging 

station.

Over-all net gain or loss ....................................

M

d

Note. As affected by small inaccuracies inherent in measurements of m

in error.
SACRAMENTO RIVER BASIN 

Elder Creek seepage Investigation, Calif.

A series of discharge measurements was made on June 5, 26, July 26, Aug. 22, Sept. 18, and Oct. 22, 1

station near Paskenta and the Bureau of Reclamation gaging station 0.5 mile upstream from mouth. The In

not necessarily, constant stage of the creek.

Miles 

above 

mouth

26.1 

15.8 

11.5

7.1 

3.8 

3.6 

2.6 

.5

Location

Bureau of Reclamation gaging station. .........................

Bureau of Reclamation gaging station. .........................

Over-all net gain or loss .....................................

Dis

June 5, 1956

Meas. 

dlsch.

59.1 

59.2 

60.4 

0 

53.6 

53.3 

51.6 

49.6 

41.5

Gain 

or 

loss

+0.1 

+1.2

-6.8 

-.3 

-1.7 

-2.0 

-8.1

-17.6

June 26, 1956

Meas. 

dlsch.

26.7 

23.9 

19.6 

1.5 

17.4 

(a) 

14.9 

9.2 

4.7

Gain 

or 

loss

-2.8 

-4.3

-.7

-2.5 

-5.7 

-4.5

-20.5

** Field estimate.

a No measurement made.

Note. As affected by small Inaccuracies Inherent In measurements of main stream, Indicated gains or l
SACRAMENTO RIVER BASIN 

Thomes Creek seepage investigation, Calif.

A series of discharge measurements was made on June 25, 26, July 23, 24, Aug. 22, Sept. 19, and Oct. 2

between the gaging station at Paskenta and a point 0.7 mile upstream from mouth. The investigations were 

constant stage of the creek.

Miles 

above 

mouth

Discharge, 

June 25, 1956

Meas. 

disch.

Gain

or 

loss

June 26, 1956

Meas. 

disch.

Gain

or 

loss

July 23, 1956

Meas. 

disch.

Gain

28.5 Gaging station at Paskenta.

Diversions.

27.0 Blue shale outcrop. 

Diversions......

21.3 At Flournoy Bridge.

Diversions.

16.1 Bureau of Reclamation gaging station. 

14.5 At Henleyville Bridge.

Inflow. 

11.7 In SEtNWt sec. 2, T. 24 N., R. 4

Diversions.

5.2 U. S. Highway 99W at Richfield. 

4.4 Bureau of Reclamation gaging station. 

2.1 In SW*SEi sec. 30, T. 25 N., R. 

.7 In SWfSEt sec. 29, T. 25 N., R.

Over-all net gain or loss.

148 

8.2

135 

30.9

106 

21.6 

96.9 

93.5 

(a)

-4.8 

+1.9

+12.5 

-3.4 95.6

4.2

79.8

5.9

78.0

79.3

81.2

74.6

-20.0

+4.1 

+1.3 

+1.9 

-6.6

29.0

4.2

26.3

33.1

1.8

7.6

1.3

1.1

(a)

+1.5 

+8.6

+7.1 

-.2 

+6.2 -19.3 +17.0 

** Field estimate.

a Remainder of measurements completed on following day.

Note. As affected by small inaccuracies Inherent in measurements of main stream, indicated gains or lo

tions were performed in August and September 1956.
SACRAMENTO RIVER BASIN

Deer Creek seepage investigation, C

A series of discharge measurements was made on June 27, July 25, Aug. 21, and Sept. 18, 1956, 

gaging station near Vlna and the U. S. Highway 99E crossing 2.5 miles upstream from mouth. The 

necessarily, constant stage of the creek.

Miles 

above 

mouth

10.9 

4.2 

2.5

Location

Department of Water Resources, State of California gaging station at U. S. Highway 99E.

Over-all net gain or loss ..............................................................

** Field estimate.

Note. As affected by small inaccuracies Inherent in measurements of main stream, Indicated ga

Fine Creek seepage Investigation, C

A series of discharge measurements was made on Apr. 24, June 7, 28, July 26, Aug. 20, Sept. 1

length, between the Bureau of Reclamation gaging station 5.8 miles upstream from U. S. Highway 9

made during periods of fairly, although not necessarily, constant stage of the creek.

Miles 

above 

mouth

5.8

3.1 

0.0

Location

Bureau of Reclamation gaging station...

U. S. Highway 99E crossing. ............

Over-all net gain or loss ..............

Dischar

Apr. 24, 1956

Meas. 

disch.

11.7 

3.6 

6.4 

4.9

Gain 

or 

loss

-1.7 

-1.5

-3.2

June 7, 1956

Heas. 

disch.

 5.7 

4.0 

2.0 

0

Gain 

or 

loss

+0.3 

-2.0

-1.7

June 28, 195

Heas. 

disch.

4.4 

2.7

»».5 

0

Gai

or 

los

-1.

-.

-1.

»* Field estimate.

Note. As affected by small inaccuracies Inherent In measurements of main stream, indicated ga
SACRAMENTO RIVER BASIN 

Big Chico Creek seepage investigation, Calif

A series of discharge measurements was made on Apr. 25, June 8, 25, July 24, Aug. 20, Sept. 17, and 

length, between the gaging station near Chico and a point 0.3 mile below Sandy Gulch, 1.5 miles upstream 

fairly, although not necessarily, constant stage of the creek.

Miles 

above

mouth

12.6

10.6 

7.3

1.5

Location

0.3 mile below Sandy Gulch. ....................

Over-all net gain or loss ......................

Discharge

Apr. 25, 1956

Meas. 

dlsch.

100 

32.7 

67.7 

62.6 

24.8 

82.1

Gain 

or 

loss

+0.4 

-5.1

-5.3

-10.0

June 8, 1956

Meas. 

dlsch.

55.0 

15.1 

34.8 

30.2 

2.9 

24.1

Gain 

or 

loss

-5.1 

-4.6

-9.0

-18.7

June 25, 1956

Meas. 

disch.

45.6 

13.8 

25.5 

17.5 

0 

11.7

Gain 

or 

loss

-6.3 

-8.0 

0 

-5.8

-20.1

Note. As affected by small Inaccuracies Inherent In measurements of main stream, Indicated gains or 

Llndo Channel of Big Chico Creek seepage investigati

A series of discharge measurements was made on Apr. 25, June 8, 25, July 24, Aug. 20, Sept. 17, and 

.2 miles in length, between "5-mile dam" on Big Chico Creek and Grape Way Bridge 0.6 mile upstream fro

. , 

were made during periods of fairly, although not necessarily, constant stage of the creek

Miles 

above 

mouth*

10.6 

4.7 

2.4

Location

At Grape Way Bridge ...........................

Over-all net gain or loss .....................

Discharg

Apr. 25, 1956

Meas. 

disch.

32.7 

28.6

24.8

Gain 

or 

loss

-4.1 

-3.8

-7.9

June 8, 1956

Meas. 

disch.

15.1 

8.3 

2.9

Gain 

or 

loss

-6.8 

-5.4

-12.2

June 25, 1956

Meas. 

dlsch.

13.8 

6.7 

0

Gain 

or 

loss

-7.1 

-6.7

-13.8

- Since total channel distances of both Lindo and main channels are the same, the "miles above mouth" 

Note. As affected by small inaccuracies Inherent in measurements of main stream, indicated gains or 
SACRAMENTO RIVER BASIN 

Cache Creek s'eepage investigation, Calif.

A series of discharge measur 

the gaging station near Capay a _.-_ .._ 

necessarily, constant stage of the creek

 ements was made on June 19, July 13, Aug. 7, 30, Sept. 25, and Oct. 25, 1

ind the Woodland-Knights Landing road 5.0 miles above mouth. The investig

the creek.

Miles 

above 

mouth

Disc

June 19, 1956

Meas. 

disch.

Gain

or 

loss

July 13, 1956

Meas. 

disch.

Gain 

loss

Gaging station near Capay.....

Diversions.................

26.1 Below Capay Dam...............

23.9 Bridge north of Capay.........

21.9 Bridge north of Esparto.......

18.8 Bridge north of Madison.......

15.2 Above Moore Dam...............

Diversions.................

Inflow.....................

15.2 Below Moore Dam...............

13.1 East line Guesisosl Grant.....

8.2 Gaging station at Yolo........

5.0 Woodland-Knights Landing road. 

Over-all net gain or loss.....

389

372

11.3

11.2

0

8.4

18.4

51.6

37.2

4.0

0

0

-5.7

-.1

-11.2

+8.4 

+10.0

386

363

2.5

2.2

0

5.2

5.4

40.5

38.6

3.5

0

0

0

-20.5

-.3

-2.2

+5.2

+ .2

0 

-3.5

** Field estimate.

Note. As affected by small Inaccuracies inherent in measurements >f main stream, indicated gains or l
506 NAPA RIVER BASIN

Napa River near St. Helena, Calif.

Location. Lat 38"29"40", long 122°25'50", In SE^ sec. 32, T. 8 N., R. 5 W., on right bank 

0.2 mile upstream from highway bridge, 1.3 miles northeast of Zinfandel, and 2.5 miles 

east of St. Helena.

Drainage area. 81.3 sq mi.

Records available.--November 1929 to September 1932, November 1939 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 200 ft (from topographic map).

Average discharge.--18 years (1930-32, 1940-56), 88.2 efs (63,850 acre-ft per year); 

median of yearly mean discharges, 66 cfs (47,800 acre-ft per year).

Extremes.--Maximum discharge during year, 12,600 cfs Dec. 22 (gage height, 15.17 ft); no 

flow at times.

1929-32, 1939-56: Maximum discharge, that of Dec. 22, 1955; no flow at times during 

1947-49, 1952-56.

Remarks. Records fair. Small diversions above station for irrigation. Records of chemIcaT analyses for the water year 1956 are given in WSP 1453.

Revisions. WSP 1285: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, In cubic 

feet per second)

Oct. 1 to Feb. 22

0.5 

.6 

.7

1.0

1.1

1.2

.4 

1.4 

2.9 

5.3

1.5 

2.0 

2.5 

3.0 

4.0 

6.0 

9.0 

13.0

74

177

317

500

985

2,260

4,830

9,640

Feb. 23 to June 18 

050 1.0 16

.1 

2.6 

5.1 

9.5

1.0 

1.2 

1.5 

2.0

June 19 to Sept. 

0

78

177

0.5 

.6 

.7 

.8 

.9

.8 

1.8 

3.3 

6.4

Note. Same as preceding table above 2.0 

ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

0.1

0

.1 

.2

j_4

*.3

.3

0

0

0

0

.2

.2

0

0

0

0 

0

0

.2

.2

0

0

0

0

0

*0

.1

.1

0

0

2.4

0.08

4.8

Nov.

0

0

0 

0

0

.1

.2

.1

0

0

0

0

0

.1

.3

.4

*.4 

1.2

1.6

1.5

1.8

1.4

1.9

3.1

2.7

1.8

1.5

1.2

1.1

1.1

23.5

0.78

47

Dec.

1.8

TTe

2.0 

1.9

2.7

111

28

10

10

8.9

6 9

5 7

5 3

4 9

4 6

6.1

20 

939

5,910

2,070

2,550

8.460

5,730

1,450

689

3,010

1,080

604

405

311

90

33,729.6

1,088

66,900

Jan.

392

275

224 

364

436

334

1,620

1,140

614

690

512

382

474

*2,160

2.870

*1,420

736 

549

402

644

484

512

500

414

2,270

1,820

1,590

1,010

639

460

340

26,277

848

52,120

Feb.

*263

213

182 

156

139

122

109

100

90

85

81

78

71

66

63

58

§

490

4,130

2,130

5.960

2,570

930

1,070

666

468

396

340

21,136

729

41,9243

Mar.

*263

22T

207 

192

177

147

128

115

111

101

91

89

82

74

66

64

61 

59

57

55

54

53

51

50

47

46

43

43

42

To' 38 

JO

2,865

92.4

5,680

Apr.

37

*35

33 

32

32

31

30

30

30

30

43

40

35

33

32

32

28 

26

26

26

24

24

24

24

24

47

53

33

30

*28

952

31.7

1,890

May

26

24

28 

47

44

5S

54

43

36

33

31

28

24

22

21

21

19 

18

18

17

17

17

16

16

15

14

13

13

13

12

12

770

24.8

1,530

June

*1212"

11 

10

9.5

10

10

9.5

9.0

8.5

8.0

7.5

5.8

6.2

6.6

4.0

3.7 

3.7

4.2

3.7

3.9

2.8

3.7

3.1

2.9

2.2

1.8

277

1.8

1.8

181.6

6.05

360

July

2.5

2.3

3.1 

1*5.

2.9

1.6

.3

1.3

.3

2.2

1.6

1.7

2.2

1.6

2.2

2.1

2.0 

2.2

2.1

1.1

1.6

.3

1.0

2.0

*1.0

.8

.7

.7

1.9

1.7

.6

51.1

1.65

101

Aug.

0.7

1.0

1.7 

2.1

1.1

2^3

1.4

1.6

1.4

.8

1.6

1.4

1.4

1.2

.7

.3

.1

1.2

.6

.4

.5

.3

.6

.4

.4

.8

.1

.4

.2

*.5

0

27.2

0.88

54

Sept.

0.1

0

0

.1

0

.1

.2

.2

.1

.2

.1

0

.1

.1

0

.2

0^

.1

.1

0

0

0

0

.1

.2

.4

.3

.2

.1

3.5

0.12

6.9

Calendar year 1955: Max 8,460 Mln 0 Mean 110 Ac-ft 79,820

Water year 1955-56: Max 8,460 Mln 0 Mean 235 Ac-ft 170,600

Peak discharge (base. 2.500 cfs). Dee. 19 (2 p.m.) 8,920 cfs (12.45 ft)j Dec. 22 (5 a.m.) 12,600 

cfs (15.17 ft); Dec. 26 (11 a.m.) 7,090 cfs (11.01 ft); Jan. 7 (6 p.m.) 3,920 cfs (8.03 ft); Jan. 15 

(5 p.m.) 4,470 cfs (8.64 ft); Jan. 25 (B a.m.) 4,140 cfs (8.28 ft); Feb. 22 (7 p.m.) 8,820 cfs 

(12.37 ft).

* Discharge measurement or observation of no flow made on this day.
NAPA RIVER BASIN 

Conn Creek near St. Helena, Calif.

507

Location. Lat 38°28'55", long 122°22'25", in SW&Wir sec. 1, T. 7 N., R. 5 W., in outlet 

 pool at toe of Conn Dam, 1.8 miles upstream from bridge on State Highway 28, 5.4 miles 

east of St. Helena, and 8 miles upstream from mouth.

Drainage area.--52.3 sq mi.

Records available. November 1929 to September 1956.

flage.--Water-stage recorder and battery of five 90° V-notoh sharp-crested weirs. Altitude 

of gage is 230 ft (from topographic map). Prior to Aug. 5, 1952, at site 1.6 miles 

downstream at different datum. Since Aug. 5, 1952, auxiliary water-stage recorder in 

spillway at different datum.

Average discharge . 15 years (1930-45), prior to construction of Conn Dam, 34.7 cfs (25,100 

acre-ft per year).

Extremes.--Maximum discharge during year, 3,600 cfs Dec. 23 (gage height, 3.70 ft, spillway gage); no flow during periods in several months.

1929-56: Maximum discharge, 7,700 cfs Feb. 27, 1940 (gage height, 11.80 ft, site 

and datum then in use); no flow during periods in each year.

Remarks --Records good. Combined flow published is sum of flow through dam and flow over 

spillway. Flow regulated by Lake Hennessey beginning in December 1945 (capacity, 

31,000 acre-ft); contents, 22,200 acre-ft Sept. 30, 1955, and 25,700 acre-ft Sept. 30, 

1956. Diversion from Lake Hennessey for water supply of city of Napa amounted to 5,320 

acre-ft for the water year 1956.

Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

2.8

2.8

2.8

2.8

2.6

2.8

2.8

2.8

2.8

*2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

3.6

4.8

4.9

5^2

5.2

5.2

5*2

5 2

103.7

3.35

206

Nov.

2*2

0

0

0

0

0

0

o

0

o

o

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

o

o

2.8

0.09

5.6

Dec.

0

0

0

o

0

0

o

o

0

0

0

0

0

0

0

0

0

0

0

0

0

1,930

2.880

984

408

1,220

691

380

243

182

16O

9,078

293

18,010

Jan.

144

134

107

92

107

97

204

411

283

232

198

176

170

343

697

743

460

359

280

286

280

256

256

232

819

856

850

751

536

338

262

1O,959

354

21,740

Feb.

*204

165

144

129

113

97

84

76

68

64

6O

60

60

53

50

43

40

40

84

1,100

1,150

1,650

1.750

785

538

430

312

250

220

9,819

339

19,480

Mar.

182

160

139

129

*118

97

80

76

68

64

60

50

46

46

4O

4O

37

37

37

37

34

31

31

29

26

26

24

19

19

11

17

1,816

58.6

3,6OO

Apr.

17

17

14

14

14

12

12

12

12

12

21

21

19

19

17

17

14

11

8.8

8.8

7.2

7.2

5.8

5.8

4.5

7.2

*8.8

7.2

475

358.3

11.9

711

May

6.5

5.0

4.3

6.3

7^6

7.6

6.2

4.9

4.9

4.9

3.7

3.7

2.7

1.8

2.3

5.2

4.6

3.7

3.9

3.9

3.9

3.3

2.6

2.6

2.6

2.6

2.6

2.8

2.8

2.8

2.8

125.1

4.O4

248

June

*2.8

2.8

2.4

0

0

0

6.4

12

8.9

8.9

7.6

5.4

5.4

5.6

5.6

5.6

5.6

5.6

5.6

5.6

5.4

4.4

4.5

5.5

4.5

5.0

4.8

4.8

4.8

4.8

150.3

5.01

298

July

4.8

4.8

4.8

4.O

4.0

4.0

4.0

4.2

4.2

4.2

4.2

4.2

4.2

4.O

4.0

4.O

4.0

4.0

4.0

4.0

4.7

4.O

"579 3.9

*3.9

3.9

3.9

3.9

3.9

3.9

128.6

4.15

255

Calendar year 1955: Max 2,88O Min o Mean 27.5 Ac-ft 19,900

Aug.

3.9

4.0

4.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.3

.4

.4

.3

1.2

73

.5

1.6

2.5

1.7

1.1

.7

.5

*.4

85.0

2.74

169

Sept.

2.2

3.4

1.8

.1

.6

1.6

1.6

1.6

1.6

1.2

.2

.3

.4

.4

.4

.4

.4

.4

.1

0

.1

O

1.2

0

0

0

O

0

2.5

3.0

25.5

0.85

51

Water year 1955-56 : Max 2,88O Min o Mean 89.2 Ao-ft 64,770

Discharge measurement made on this day.
508 NAPA RIVER BASIN

Dry Creek near Napa, Calif.

Location.--Lat 38°21i23", long 122°21'50", In Napa Grant, on right bank 3.7 miles upstream 

from mouth and 5.5 miles northwest of Napa, Napa County.

Drainage area.--17.4 sq mi.

Records available.--January 1951 to September 1956.

Gage. Water-stage recorder. Concrete control since June 14, 1955. Altitude of gage is 

190 ft (from topographic map). Prior to June 14, 1955, at site 350 ft downstream at 

different datum.

Average discharge. 5 years, 26.0 cfs (18,820 acre-ft per year).

Extremes.--Maximum discharge during year, 2,600 cfs Dec. 19 (gage height, 7.25 ft); no flow 

for many days.

1951-56: Maximum discharge, that of Dec. 19, 1955; no flow for many days each year.

Remarks.--Records good except those for periods of indefinite stage-discharge relation, 

which are fair. Several small diversions for irrigation above station. Occasional 

diversion around station through 6-inch pipe for domestic use on farm below station.

Rating tables, water year 1955-56, except periods of Indefinite stage-discharge 

relation (gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Dec. 19

2.9

3.0

3.1

3.2

.3

.7 

1.6 

3.0 

4.8 

7.5 

11

3.3

3.4

3.5

3.6

3.7 

4.0 

5.0 

6.0

16

22

35

58

90

220

830

1,560

2.03 

2.1

2.4

2.5

2.6

2.7

2.8

2.9

19 to Sept. 30

	3.0 

.2 3.2

,5 3.4

,9 3.7

.4 4.0

,1 4.5

.0 5.0

.7 6.0

.9 6.5

49

96

200

405

675

1,430

1,880

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

jJL .1

.1.1

.1

.1.1.1

.1.1

.1.1

.1

.1.1

.1

1.6

0.05

3.2

Nov.

0.1

 .1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.3

.5

.3

.3

.5

*.4

.8

.6

.7

.6

1.2

¥

.6

.6

.5

.5

.5

12.4

0.41

25

Dec.

1.0

1.2

.7

.16

1.5

*23

7.8

4.8

5.9

4.3

3.4

2.9

2.6

2.2

1.9

3.2

9.8

230

*1,210

406

439

,*1,490

*L,100

414

206

492

278

160

*102

81

76

6,760.8

218

13,410

Jan.

89

70

62

69

69

62

311

286

160

124

93

81

81

*316

HI

*276

160

118

93

107

91

89

84

81

268

294

272

208

149

110

89

4,779

154

9,480

Feb.

*76

67

59

53

49

45

41

37

35

33

30

29

27

25

23

21

21

20

148

811

432

942

485

268

252

188

138

110

91

4,556

157

9,040

Mar.

17

69

*64

58

54

49

45

42

40

37

35

33

31

31

32

31

30

28

27

25

23

23

21

19

18

18

17

16

16

14

T4

1,037

33.5

2,060

Apr.

13

13

11

10

9.4

9.1

8.8

8.8

8.5

8.8

21

13

11

10

9.4

9.1

8.5

7.6

7.2

7.2

6.6

6.4

6.4

6.4

6.4

16

*12

8.2

7.6

6.9

287.3

9.58

570

May

6.4

6.2

7.2

IS

9.8

9.8

8.8

7.9

7.6

7.4

7.2

6.4

5.7

5.1

4.9

4.5

4.3

4.1

e4.1

e4.3

e4.1

e3.9

3.8

3.8

3.4

3.3

il

e3.2

e3.2

e3.2

3.2

173.1

5.58

343

June

*e3.0

e2.7

e2.4

e2.4

e2.3

2.3

2.3

2.2

e2.1

el. 9

1.8

1.9

1.8

1.7

1.6

el. 5

el. 5

el. 4

el. 3

el. 2

el. 4

el. 2

el. 2

el. 2

el.O

el.O

el.O

e *Z

.8

.9

49.7

1.66

99

July

0.7

.7

.8

e.8

.7

e.7

e.7

e.7

.6

e.7

e.8

e.9

e.9

e.9

e.9

JUO

e.9

e.8

e.8

e.8

e.7

e.7

e.7

e.6

e.5

e.5

*e.4

.ti

.3

.3

.3

21.1

0.68

42

Aug.

0.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.1

0

0

eo

eO

eO

eO

0

0

0

0

0

0

0

0

0

0

3.2

0.10

6.3

Sept.

0

0

0

Calendar year 1955: Max 1,490 Mln o Wean 22.4 Ac-ft 15,450

Water year 1955-56: Max 1,490 Mln o Mean 48.3 Ac-ft 35,080

Peak discharge (base. 450 efs). Dai-.. 19 (12:15 p.m.) 2,600 cfs (7.25 ft); Dec. 22 (2 a.m.) 

2,350 cfs (7.00 ft); Dec. 26 (9a.m.) 1,340 cfs (5.89 ft); Jan. 7 (4:30 p.m.) 789 cfs (5.17 ft); 

Fan. 15 (3:30 p.m.) 633 cfs (4.93 ft); Feb. 22 (3 p.m.) 1,590 cfs (6.18 ft).

* Discharge measurement or observation of no flow made on this day.

e Stage-discharge relation Indefinite; discharge estimated on basis of partial record and weather 

records.
SONOMA CREEK BASIN 

Sonoma Creek at Boyes Hot Springs, Calif.

509

Location Lat 38°18<49", long 122°29i09", in Agua Caliente Grant, on left bank 10 ft

downstream from county highway bridge at Boyes Hot Springs, Sonoma County, and 2.2 miles 

northwest of Sonoma.

Drainage area 62.7 sq mi.

Records available. February 1955 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 75 ft (from topographic map).

Extremes.--Maximum discharge during year, 8,880 cfs Dec. 22 (gage height, 17.10 ft) from 

rating curve extended above 4,100 cfs on basis of slope-area determination of peak flowno flow for several days October, November, and September

1955-56: Maximum discharge, that of Dec. 22, 1955; no flow for several days each

Remarks . Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Nov. 13 to Dec. 18, Aug. 24-30)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 3O

3.7

3.8 

4.0 

4.3 

4.6

5.0

5.5

6.0

6.5

7.0

8.0

10.0

12.0

136

230

370

550

780

1,430

2,900

4,500

3.3 

3.5

0

1.5

4.0

8.0

19

37

60

134

4.5

5.0

6.0

7.0

9.0

11.0

13.0

226

340

660

1,120

2,330

3,760

5,350

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30 

31

Total

Mean

Ac- ft

Oct.

0 

.4

1.0

.3

.3

.4

.2

0

.3

0

0

.7

1.3

.7

1.1

1.1

2.2

1.3

2.2

5.0

2.6

2.4

3.0

2.4

1.6

1.4

.5

.5

.8

1.6

.6

33.9

1.09

67

Nov.

0.4 

.7

.8

.8

1.4

3.2

4.3

2.6

2.0

1.1

.5

.3

15

7.6

2.0

2.2

3.8

*3.5

4.9

3.6

4.6

2.8

8.0

6.3

3.5

1.0

.3

0 

.8

.2

88.4

2.95

175

Dec.

3.2

4.0

1.1

.8

9.5

*164

19

7.4

15

5.7

2.8

1.6

1.6

1.3

.8

9.4

50

1,170

4,200

*1,310

1,610

*5.010

*3,540

1,010

465

2,380

745

400 

276

212

226

22,851.2

737

45,320

Jan.

346 

202

163

192

184

155

1,300

697

361

388

274

214

276

1,810

2 . 190

*934

474

361

294

475

321

386

338

304

1,010

998

845

528

361

281

224

16,886

545

33,490

Feb.

*186 

161

145

134

123

113

105

98

91

88

85

81

77

75

74

70

6!

67

954

3,030

1,160

5.550

1,540

519

621

533

239

208 

184 -

15,958

481

27,690

Mar.

147 

129

*124

113

112

98

88

81

77

71

66

60

56

54

50

48

47

46

44

42

41

41

39

39

38

56

54

33 

33

33

35

1,953

63.0

3,870

Apr.

33 

30

28

27

26

24

24

24

21

21

42

51

24

24

24

24

23

20

19

20

18

17

14

15

15

93

*50

50 

24

21

806

26.9

1,600

May

20 

19

25

46

34

35

52

27

24

24

22

20

20

18

17

14

15

15

14

14

12

10

12

11

10

10

10

M10

9.5

562.5

18.1

1,120

June

*9.5

9.5

9.5

9.0

8.5

8.0

8.0

7.6

7.6

7.2

6.0

6.0

5.6

6.4

6.0

4.8

4.8

4.4

4.4

4.8

5.2

4.0

4.8

5.2

5.4

2.6

1*1

2.3 

2.3

2.3

172.0

5.75

541

July

1*1 

2.6

2.1

2.1

1.9

1.5

1.5

2.5

2.5

1.7

1.5

1.5

2.5

2.6

2.6

2.6

1.9

1.7

1.5

1.1

1.0

1.0

1.0

1.0

.8

.8

*.6

.6 

.8

1.1

1.0

49.4

1.59

96

Aug.

JUO 

.8

.8

.8

.8

.8

.6

.5

.2

.2

.1

.2

.6

.6

.5

.5

.5

.5

.6

.8

.8

.6

.6

.6

.6

.5

.5

.5 

*1

.1

*.l

16.0

0.52

32

Sept.

0.1 

.2

.3

.6

.6

.5

.3

.2

.2

0

o

0

0

0

0

0

0

0

o

0

.1

.3

.3

.2

0

0

0

0 

0

0

3.9

0.13

7.7

Calendar year 1955 : Max - Min - Mean - Ac -ft -

Water year 1955-56 : Max 5,010 Min o Mean 157 Ac-ft H3,80O

Peak discharge (base. 1.550 efsl.--Dee. 19 (12 m.) 6,620 cfs (14.50 ft); Dec. 22 (1 a.m.) 8,880 cfs 

(17.10 ft); Dec. 26 (9 a.m.) 6,270 cfs (14.09 ft); Jan. 7 (5:30 p.m.) 3,860 cfs (11.14 ft); Jan. 15 

(3 p.m.) 3,890 cfs (11.17 ft); Jan 25 (7 a.m.) 1,800 cfa (8.17 ft); Feb. 20 (7 a.m.) 3,950 cfs (11.25 

ft); Feb. 22 (2:30 p.m.) 5,430 cfs (13.10 ft); Feb. 25 (12 m.) 1,580 cfs (7.80 ft).

* Discharge measurement made on this flay.
510 PETALUMA CREEK BASIN 

Petaluma Creek near Petaluma, Calif.

Location.--Lat 38"15'40", long 122°39'35", in Roblar de la Miseria Grant, on right bank 

70 ft downstream from county highway bridge, 1.3 miles downstream from Lichau Creek, and 

2.0 miles northwest of Petaluma, Sonoma County.

Drainage area. 29.6 sq mi.

Records available.--October 1948 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 20 ft (from topographic map).

Average discharge. 8 years, 20.0 cfs (14,480 acre-ft per year).

Extremes.--Maximum discharge during year, 1,860 cfs Dec. 22, 26, Jan. 14; maximum gage 

height, 13 55 ft Dec. 22; no flow for several months.

1948-56: Maximum discharge, that of Dec. 22, 26, 1955, Jan. 14, 1956; maximum gage 

height, that of Dec. 22, 1955; no flow for several months each year.

Remarks.--Records fair. No regulation or diversion.

Rating tables, wate year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 19

3.1 

3.3

5.0

1.1 

1.9

5.5

6.0

6.5

7.0

7.5

8.0

9.0

10.0

12.0

47

74

113

166

244

480

730

1,320

3.2 

3.4 

3.7 

4.0 

5.0

Dec. 19 to Sept. 30 

6.0

10.0

13.0

101

188

344

760

1,670

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Tota:

Mean

Ac-ft

Oct.

0

0

0

Nov.

(*)

0

0

0

Dec.

0

0

0

0

.1

*20

2.8

.5

.6

.3

.1

0

0

0

0

0

2.8

72

1,190

667

246

*3j470

*1,220

*266

61

968

209

62

39

*54

*255

6,806.2

220

13,500

Jan.

227

76

43

37

65

53

418

377

63

159

69

47

66

1,150

1.190

300

*62

60

50

301

84

178

137

64

596

260

237

95

49

39

52.

6,584

212

13,060

Feb.

25

20

*17

15

14

12

9.7

8.4

6.1

5.8

6.1

5.8

5.6

4.7

3.8

2.8

^76" 153'

741

196

768

459

62

101

60

34

29

42

2,812.2

97.0

5,580

Mar.

24

*18

13

16

12

14

11

9.5

8.8

7.6

6.7

5.4

4.9

4.7

4.1

3.8

3.6

3.6

3.4

3.1

3.0

2.5

2.4

2.4

2.4

2.2

1.4

1.3

1.3

1.3

1.3

198.7

6.41

394

Apr.

1.3

.9

.6

.5

.4

.4

.1

0

*0

0

.8

2.4

1.2

1.0

1.0

1.0

.5

.2

0

0

0

0

0

0

*0

36

31

7.0

3.3

1.9

91.5

3.05

181

May

1.0

.6

.8

11

10

6.9

4.2

2.0

1.6

.9

.8

.5

a0

0

0

0

0

0

0

0

0

.2

1.9

1.4

1.0

0

0

0

0

0

44.8

1.45

89

June

(*)

0

0

0

July

(*)

0

0

0

Aug.

(*)

0

0

0

Sept.

(*)

(*)

0

0

0

Calendar year 1955: Max 1,470 Mln o Mean 22.6 Ac-ft 16,340

Water year 1955-56: Max 1,470 Mln Q Mean 45.2 Ac-ft 32,800

Peak discharge (base. 400 cfs).--Dec. 19 (5 p.m.) 1,640 cfs (12.91 ft); Dec. 22 (4 a.m.) 1,860 cfs 

(13.55 ft); Dec. 26 (11 a.m.) 1,860 cfs (13.53 ft); Dec. 31 (6 a.m.) 418 cfs (8.39 ft); Jan. 7 (9 p.m ) 

1,300 cfs (11.93 ft); Jan. 14 (7:30 p.m.) 1,860 cfs (13.53 ft); Jan. 20 (10 a.m.) 610 cfs (9.32 ft); 

Jan. 25 (9:30 a.m.) 1,140 cfs (11.40 ft); Feb. 20 (11 a.m.) 990 cfs (10.90 ft); Feb. 22 (9 p.m.) 

1,460 cfs (12.40 ft).

* Discharge measurement or observation of no flow made on this day.
NOVATO CREEK BASIN 

Novato Creek near Novato, Calif.

511

Location. Lat 38°06'45", long 122°35'05", In Novato Grant, on right bank 500 ft downstream 

from highway bridge and 1 mile west of U.S. Highway 101 in Novato, Marin County.

Drainage area.--17.2 sq mi.

Records available.--October 1946 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 45 ft (from topographic map).

Average discharge. 10 years, 11.0 cfs (7,960 acre-ft per year), unadjusted.

Extremes. Maximum discharge during year, 1,120 cfs Dec. 22 (gage height, 7.88 ft); no flow 

for several months.

1946-56: Maximum discharge, 1,130 cfs Dec. 3, 1950 (gage height, 7.97 ft); no flow 

for several months each year.

Remarks.--Records good. Plow regulated by Stafford Lake beginning Dec. 1, 1951 (capacity, 

4,500 acre-ft since Oct. 18, 1954); contents, 1,768 acre-ft Sept. 30, 1955, and 1,850 

acre-ft Sept. 30, 1956. Diversion from Stafford Lake for municipal water supply began 

Apr. 25, 1952, and amounted to 1,489 acre-ft for water year 1956.

Revisions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Apr. 11 to July 14)

Oct. 1 to Dec. 22 

0

.2

.4

1.2

3.0

5.3

1.0 

1.3 

2.0 

3.0 

5.0

14

31

96

236

580

0.3 

.4 

.5

Dec. 22 to Sept. 30 

0

.2

.4

1.2

3.0

5.3

1.0 

1.4 

2.0 

2.5 

3.0 

6.0

13

34

80

132

201

740

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

(*)

0

0

0

Nov.

2.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.2

*.8

.3

.2

.2

.2

.3

.2

.1

2.6

0.09

5.2

Dec.

1.3

.3

,g

.2

.7

*3.0

.4

.4

.5

.3

.3

.3

.3

.3

.3

.9

1.0

47

365

128

131

554

649

340

155

535

249

125

79

101

*150

3,618.7

117

7,180

Jan.

138

92

73

66

57

48

197

188

102

93

71

57

60

*402

*549

311

*149

102

72

120

82

84

74

69

211

180

137

99

74

60

49

4,066

131

8,060

Feb.

42

36

31

*28

27

23

21

18

17

16

16

15

14

13

12

9.9

9.1

56"8. 1"3

181

125

384

356

148

114

76

55

48

43

- -----

1,942.3

67.0

3,850

Mar.

3Z

*33

29

27

25

21

19

18

16

16

14

12

12

11

9.9

9.5

9.5

9.1

8.7

8.3

6.8

6.8

6.5

6.2

5.6

4.8

4.1

4.1

4.1

5.6

3.6

401.2

12.9

796

Apr.

3.0

2.8

2.8

2.6

2.6

1.9

1.9

2.1

2.1

2.6

2.4

2.2

1.9

1.9

1.9

1.4

1.2

1.0

1.1

1.0

1.1

1.0

*.8

1.0

1.9

"zTI 4.6

1.5

1.4

1.4

57.2

1.91

113

May

1.4

1.4

1.5

L 7

1.5

1.4

1.4

1.2

1.1

1.2

1.2

1.0

.9

.9

.7

.7

.7

.8

.9

.7

.7

.6

.6

.7

.5

.5

.5

.4

.5

.6

.5

28.4

0.92

56

June

0.6

.4

.4

.6

*.6

.6

.5

.5

.4

.4

.4

.4

.5

.6

.4

.4

.3

.4

.4

.4

.3

.2

.2

.2

.2

.2

.1

72

.1

.1

11.0

0.37

22

July

0. 2

.2

.2

.1

.1

.1

.1

0

.1

.1

*0

.1

.2

.2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.7

0.05

3.4

Aug.

(*)

0

0

0

Sept.

(*

0

0

0

Calendar year 1955: Max 649 Mln 0 Mean 11.5 Ac-ft 8,320

Water year 1955-56: Max 649 Mln o Mean 27.7 Ac-ft 20,090

Peak discharge (base, 200 ofs). Dec. 19 (12 m.l H72 o.fs (B.59 ft); Her.. 22 (6 a.m.} 1 T 120 ofs

(7.88 ft); Dec. 26 (8 a.m.) 1,030 ofs (7.45 ft); Dec. 31 (l a.m.) 219 cfs (3.11 ft); Jan. 7 (4 p.m.)

545 ofs (5.00 ft); Jan. 15 (12 m. ) 724 cfs (5.92 ft); Jan. 20 (5:30 a.m.) 225 ofs (3.15 ft); Jan. 25

^* a..m. I joo via \'± f u£. i l* / , reu. t.u \o a.m.; t.J3 CIS 13.£U 10^; l*eu. t

Feb. 25 (12 m.) 227 cfs (3.16 ft).

* Discharge measurement or observation of no flow made on this day.

ft);
512 CORTE MADERA CREEK BASIN

Corte Madera Creek at Ross, Calif.

Location. Lat 37°57'45", long 122°33'SO", in Punta de Quentin Grant, on left bank behind 

fire station at Ross, Marin County, 1.7 miles southwest of San Rafael and 4 miles upstream from mouth.

Drainage area.--18.3 sq mi.

Records available.--February 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 8 ft (from topographic map).

Ayerage discharge.--5 years, 32.2 cfs (23,310 aore-ft per year).

Extremes.--Maximum discharge during year, 3,620 cfs Dec. 22 (gage height, 17.45 ft), from 

rating curve extended above 1,600 cfs by logarithmic plotting; no flow for many days 

July to September.

1951-56: Maximum discharge, that of Dec. 22, 1955; no flow at times in 1956.

Remarks.--Records good. Flow regulated by Phoenix Lake (capacity, 612 acre-ft). Diversion on tributary above station by Marin Municipal Water District.

Dischaige, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23 

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

2,1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

*.l

.1

.1

.1

.1

.1

.2

.3

.3

.3

.3 

.4 

.3

.3

.3

.3

.4

.4

.3

-il

6.5

0.21

13

Nov.

0.4

.4

.5

.5

.6

.6

.6

.6

.6

.9

.6

.7

29

1.8

1.1

7.7

2.1

2.0

1.9

6.9

1.8

1.2 

*12

1.8

1.4

1.3

1.8

2.2

3.0

4.0

90.0

3.00

179

Dec.

9.4

2.6

Z^Z

2.2

38

*151

13

14

10

6.9

5.4

5.1

4.5

4.2

4.2

7.7

14

446

1,700

410

504

2.560 

1,540 

359

160

631

221

116

72

126 

*159

9,098.4

293

18,050

Jan.

328

140

89

103

89

72

311

207

118

115

81

65

77

477

*552

262

*134

101

71

114

78

86 

75 

74

349

310

229

146

J03

77 

61

5,094

164

10,100

Feb.

44

40

34

#26

22

20

17

15

14

16

13

12

11

11

13

1*1

9.2

9.2

483

643

290

1.060 

386 

183

203

lie

85

72

61

3,919.6

135

7,770

Mar.

11

41

*35

30

26

20

IB

16

16

14

12

11

11

14

9.2

7.4

6.6

6.2

6.2

5.6

5.6

5.2 

ioO 

4.0

4.3

4.9

4.6

4.3

4.3

4.0

4.3

401.7

13.0

797

Apr.

4.0

3.8

3.8

3.8

4.0

3.8

3.8

4.0

4.6

4.9

13

4.9

5.2

4.6

4.0

3.8

4.3

3.8

3.5

7.8

3.2

3.0 2.1

2.8

3.2

li

5.2

3.5

3.2

3.2

139.5

4.65

277

May

3.0

2.5

5.2

^

4.9

4.6

4.0

3.8

3.5

3.0

2.5

2.1

2.5

2.3

2.1

2.1

1.9

1.7

1.7

1.7

1.7

1.7 

1.7

1.7

1*2.

1.2

1.2

1.3

1.2

1.2 

1.5

76.6

2.47

152

June

1.5

1.5

1.2

1.3

*1.3

1.3

1.2

1.2

1.2

1.2

1.3

1.2

1.2

1.5

1*1

1.7

1.7

1.5

1.5

1.3

1.2

1.0 

1.0 

1.0

1.0

.7

.7

.6

.6

.6

35.9

1.20

71

July

0.7

.9

1=0

.9

.7

.7

.9

.7

.7

.9

*.6

.4

.9

.7

.6

.4

.6

.4

.4

o

0

0 

0 

0

0

0

1

3

3

3 

3

14.4

0.46

29

Aug.

0.3

.3

.3

.4

.4

.4

.4

.4

.4

.3

.1

ol

.4

.3

.3

o

0

0

0

0

0

0 

0 

0

0

0

0

0

0

0 

0

5.4

0.17

11

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0 

0

.1

-ll 0

*0

0

0

0.3

0.01

0.6

Calendar year 1955: Max 2,360 Mln 0.1 Mean 33.7 Ac-ft 24,380

Water year 1955-56: Max 2,360 Mln 0 Mean 51.6 Ao-ft 37,450

j.--Dee. 19 (11 a.m.) 2,880 cfs

. . : .T. ) 1.410 cfs (10.90 ft)j Jan. 7 : p.m. , 

Feb. 19 (10 p.m.) 1,360 cfs (10.70 ft)j Feb. 22 (9:30 a.m.) 1,810 cfs (12.40 ft). 

Discharge measurement or observation of no flow made on this day.

Peak discharge (base. 1.000 cfsj.--Dee. 19 (11 a.m.) 2,880 cfs (15.59 ft): Dec. 22 (7 a.m.) 3.6 

fs (17.45 ft); Dec. 26 (7:30 a.nT. ) 1.410 cfs (10.90 ft)j Jan. 7 (4:30 p.m.) 1,080 ofs (9.54 ft);
LAGUNITAS CREEK BASIN 513 

Arroyo Nicasio near Point Reyes Station, Calif.

Location^--Lat 38°04'20", long 122°45'30", in Nicasio (Buckelew) Grant, on left bank 

0.9 mile upstream from mouth and 2.7 miles east of Point Reyes Station, Marin County.

Drainage area.--36.2 sq mi.

Records available . July 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 60 ft (from topographic map).

Extremes.--Maximum discharge during year, 9,010 cfs Dec. 22 (gage height, 14.57 ft), from 

rating curve extended above 2,900 cfs on basis of slope-area determination of peak flow; 

no flow for many days October to November, July to September.

1953-56: Maximum discharge, that of Dec. 22, 1955; no flow for many days each year.

Remarks.--Records good. Small diversions for irrigation above station. 

Revisions (water years). WSP 1395: 1954(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22

3.2 

3.5 

4.0 

5.0 

7.0 

9.0 

11.0

Dec. 23 to Sept. 30

44

87

195

540

1,510

2,850

4,700

2.1

2.2

2.8

2.9

3.0 

3.2 

3.5 

4.0

Note. Same as preceding 

table above 4.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

O

0

o

Nov.

o

0

0

0

0

O

0

0

0

0

0

0

.1

0

0

o

0

0

.1

.1

.2

.1 *.5

.2

.1

.1

.1

.1

.1

.1

1.9

0.06

3.8

Dec.

1.1

, 4

Ts

.4

1.7

*65

16

7.7

8.9

5.6

4.2

3.6

3.2

2.8

2.7

6.1

30

501

3,130

771

1,040

*4.220

*2J.60

547

210

1,510

398

202

128

309

*403

15,688.9

506

31,120

Jan.

536

231

150

146

130

105

1,060

479

242

220

144

116

122

*1,190

*1.460

513

*231

178

126

243

168

192

168

157

552

307

304

208

146

109

87

10,020

323

19,870

Feb.

70

59

50

*46

44

34

30

24

21

19

18

17

16

15

14

13

12

12

472

1,100

435

2.040

675

247

284

172

122

116

100

6,277

216

12,450

Mar.

76

*66

63

54

50

42

37

33

30

26

24

21

19

17

15

15

14

13

12

12

11

11

10

10

9.6

8.8

8.0

8.0

7.6

776

737.8

23.8

1,460

Apr.

6.9

6.2

6.2

5.9

5.6

5.6

5.0

4.8

4.8

5.0

9.1

6.6

5.6

5.6

5.3

5.3

5.0

4.6

4.3

4.0

4.0

4.0

*3.8

3.8

4.3

13

16

9.6

7.6

6.6

214.1

7.14

425

May

5.9

5.6

5.9

7 . 2

J7s

6.2

5.6

5.3

5.0

4.8

4.8

4.3

4.0

3.8

3.6

3.2

3.2

2.6

3.3

2.3

2.8

2.6

2.8

2.6

2.4

2.1

2\\

2.1

2.1

2.1

2.1

119.0

3.84

236

June

2.1

1.8

1.2

1.1

*1.0

1.0

.9

.9

.8

.7

.6

.6

.6

.6

.7

.6

.5

.5

.4

.5

.5

.3

.2

.2

.2

.2

*^Y . i

!i.1

19.1

0.64

38

July

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

*.l

!i.1.1.1

.1.1.1.1.1

.1.1

0

0

.1

.1

.1

.1

.1

.1.1

2.9

0.09

5.8

Aug.

0

0

0

1 1

TT

0

0

0

0

0

0

0

0

*o

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

o

0

0.2

0.006

0.4

Sept.

o

0

0

0

0

o

0

0

+L.1

.1.1

.1.1.1

.1

.1

.1

.1.1

.1.1.1

.1.1

.1.1

** 1

.1.1

2.2

0.07

4.4

Calendar year 1955: Max 4,220 Min 0 Mean 54.7 Ac-ft 39,590

Water year 1955-56 : Max 4,220 Min 0 Mean 90.4 Ac-ft 65,610

Peak discharge (base, 1.400 cfs). 

cfs (14.57 ft); Dec. 26 (7 a.m.) 5,05 

Jan. 14 (4 p.m.) 2,83O cfs (8.98 ft);

Dec. 19 (11 a.m.) 7,240 cfs (13. 2o ft); Dec. 22 (6 a.m.) 9,010 

0 cfs (11.32 ft): Jan. 7 (3:30 p.m.) 3,920 cfs (1O.22 ft); 

Feb. 20 (6 a.m.) 1,470 cfs (6.93 ft); Feb. 22 (1 p.m.) 3,690

cfs (9.99 ft).

* Discharge measurement or observation of no flow made on this day.

** Field estimate made on this day.
514 RUSSIAN RIVER BASIN

Russian River near Ukiah, Calif.

Location.--Lat 39°12'10", long 123°12'00", in Yokayo Rancho Grant, on left bank 200 ft 

downstream from York Creek, 0.7 mile upstream from East Fork, and 3.6 miles north of 

Ukiah, Mendocino County.

Drainage area. 99,6 sq mi.

Records available.--August 1911 to August 1913, October 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage is 614.02 ft above mean sea level (levels by 

Corps of Engineers). Prior to October 1952. staff gage at bridge 0.6 mile downstream 

at different datum.

Average discharge.--5 years (1911-12, 1952-56), 182 cfs (131,700 acre-ft per year).

Extremes. Maximum discharge during year, 18,900 cfs Dec. 21 (gage height, 19.0 ft), from 

rating curve extended above 13,000 cfs on basis of slope-area determination of peak 

flow; minimum, 0.1 cfs Oct. 1 to Nov. 8, Nov. 10-12, 15.

1911-13, 1952-56: Maximum discharge, that of Dec. 21, 1955; no flow Sept. 11 to 

Oct. 18, Oct. 22, 1911, Oct. 1 to Nov. 14, Nov. 17-30, 1952, Oct. 1, 3, 10, 1953.

Remarks. Records good except those for Dec. 21 to Feb. 20, which are fair. Small diversions above station for irrigation. Records of chemical analyses for the water year 

1956 are given in WSP 1453.

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

feet per second)

Oct. 1 to Dec. 21 Dec. 21 to Feb. 2O Feb. 21 to Sept. 30

0.1

1.0

4.1

9.1

16

39

3.7 

4.0 

4.5 

5.0 

6.0 

9.0 

13.0

288

400

625

900

1,500

3,640

8,050

2.6 

2.8 

3.0 

3.5 

4.0 

6.0 

8.0 

15.0

53

95

156

380

690

2,080

4,000

14,000

2.0 

2.2

0.2

40

2.5 

3.0 

3.3 

3.6 

4.0 

6.0 

8.0 

15.0

284

435

690

2,080

4,000

14,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0,1

,1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.1

0.10

6.1

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.1

.1

.2

.2

.1

.2

.2

.5

4.2

97

161

49

222

125

55

35

27

20

15

*12

824.9

27.5

1,640

Dec.

102

92

58

42

815

3,600

422

332

463

196

118

83

61

46

47

124

663

2,830

7,090

1,610

*5,450

12.800

5,320

1,670

1,580

1,700

1,300

855

*580

424

335

50,808

1,639

100,800

Jan.

540

360

289

684

742

612

3,120

1,680

897

1,390

890

560

869

*8,360

»8.580

2,370

1,210

1,140

904

1,670

1,020

1,390

1,280

*855

*1,850

1,710

1,340

925

703

540

435

48,715

1,571

96,620

Feb.

345

289

243

212

186

164

*139

129

117

106

100

93

88

79

72

68

66

6G

515

4,190

6,410

3,860

1,870

1,120

1,700

1,120

748

781

710

25,586

882

50,750

Mar.

495

396

370

370

508

396

307

261

227

199

182

164

151

139

*127

116

112

102

95

93

97

92

85

81

80

78

71

69

65

66

73

5,667

183

11,240

Apr.

68

63

60

57

54

52

49

48

44

44

52

52

43

42

40

39

37

33

32

29

27

26

25

*25

26

34

36

30

27

25

1,219

40.6

2,420

May

24

21

24

34

42

60

52

37

33

30

32

27

25

20

19

16

12

12

12

12

12

13

16

16

17

19

22

24

25

24

22

754

24.3

1,500

June

24

19

16

15

12

*10

10

9.7

8.4

7.0

6.7

6.0

5.6

5.6

6.3

5.3

4.3

4.3

5.0

4.3

3.6

2.9

2.6

2.4

2.4

2.4

2.2

1.9

T79

1.9

208.7

6.96

414

July

2.2

2.2

1.8

2 6

a2r!"6

a2.5

a2.4

a2.3

a2.2

a2.2

2.2

2.2

2.2

2.4

2.6

2.1

 1.9

1.7

1.6

1.6

1.5

1.5

1.4

1.4

1.3

1.3

1.2

1.1

1.2

1.1

1.0

57.5

1.85

114

Aug.

1.0

1.0

1.0

1.0

1.2

1.0

1.1

1.1

1.0

1.0

.8

.8

.8

.8

.8

.8

.8

.8

.7

.6

.8

.8

.7

.6

.6

.6

.5g~

!e

.6

.6

25.1

0.81

50

Sept.

~0.6

.4

.4

.4

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

.6

.5

.6

.5

.5

.5

.4

.4

.5

.5

.5

.5

.4

.4

14.3

0.48

28

Calendar year 1955: Max 12,800 Mln o.l Mean 192 Ac-ft 138,700

Water year 1955-56: Max 12,800 Mln o.l Mean 366 Ac-ft 265,600

Peak discharge (base, 4,000 cfs.).-

cfs (17.36 ft); Dec. 21 (11 p.m.) 18

-Dec. 6 (5 a.m.) 9,600 cfs (14. OO ft); Dec. 19 (2 p.m.) 15,6OO 

. . .. , 900 cfs (19.0. ft); Jan. 7 (6 p.m.) .. 4,620 , cfs (8.52 ft); Jan. 15

(1 p.m.) 13,300 cfs (14.55 ft); Feb. 21 (5:30 p.m.) 9,470 cfs (12.05 ft). 

* Discharge measurement made on this day. 

a No gage-height record; discharge interpolated.
RUSSIAN RIVER BASIN 515

East Fork Russian River near Calpella, Calif.

Location. Lat 39°14'20", long 123°08'55", in sec. 13, T. 16 N., R. 12 W., on right bank 

1.4 miles downstream from Cold Creek and 3 miles east of Calpella.

Drainage area.--94.0 sq mi.

Records available.--November 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 720 ft (from topographic map).

Average discharge.--14 years'(1942-56), 318 cfs (230,200 acre-ft per year).

Extremes. Maximum discharge during year, 13,300 cfs Dec. 21 (gage height, 15.06 ft), 

from rating curve extended above 8,600 cfs; minimum daily, 108 cfs June 13.

1941-56: Maximum discharge, that of Dec. 21, 1955; minimum daily, 7.5 cfs Dec. 13, 

1943.

Remarks. Records good. Flow greatly affected by diversion from Eel River through Potter 

Valley powerhouse (see p. 529). Small diversion above station for irrigation. Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions. WSP 1041: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Feb. 21 Feb. 22 to Sept. 3O

2.2 

2.5 

3.0 

4.0 

5.0

115

149

235

510

905

6.0

7.0

9.0

12.0

1,390

2,000

3,900

8,100

1.9

2.4 

3.0 

4.0

105

159

261

510

Note. Same as preceding table above 

4.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

213

223

219

235

221

211

231

229

241

243

241

241

241

239

227

241

243

245

245

245

245

245

245

249

*247

245

235

241

247

245

245

7,363

238

14,600

Nov.

249

245

243

245

245

245

245

245

243

245

245

241

268

282

278

280

217

249

272

322

246

149

327

298

206

201

190

123

145

145

7,134

238

14,150

Dec.

*213

251

210

186

878

2,290

327

477

540

325

249

201

193

177

239

318

645

2,140

4,990

1,180

4,040

7.280

*2,640

707

884

1,190

776

482

*342

255

206

34,831

1,124

69,090

Jan.

386

454

412

615

738

562

3,010

1,290

833

1,140

815

639

963

5.580

*5,350

1,650

1,030

972

623

1,340

887

1,230

1,060

846

1,580

1,490

1,240

923

775

687

619

39,739

1,282

78,82C

Feb.

559

524

503

475

463

445

*430

415

409

412

409

397

391

391

388

382

379

376

84T

3,930

4.500

3,270

1,390

893

1,610

1,040

811

899

806

-

27,538

950

54,620

Mar.

655

594

570

598

715

590

534

504

483

468

456

438

429

420

*406

398

393

390

388

388

385

377

374

371

364

361

356

354

347

349

352

13,807

445

27,380

Apr.

349

347

344

342

342

338

327

329

333

324

335

327

338

314

335

324

310

302

296

298

279

304

312

*308

284

312

327

314

318

316

9,628

321

19,100

May

298

306

316

324

335

342

338

335

327

329

331

324

322

320

322

320

312

316

316

279

298

298

294

286

284

282

286

278

256

236

0 . -z 243

9,453

305

18,750

June

238

TvT

166

197

214

*214

207

180

109

126

138

114

108

115

119

129

133

162

185

193

195

182

168

182

174

170

172

176

179

170

4,982

166

9,880

July

174

Iff

177

193

190

177

202

188

188

192

182

177

185

188

198

202

190

*174

174

177

182

187

195

179

187

195

187

204

202

200

207

5,830

188

11,560

Aug.

202

200

200

211

200

204

204

185

185

204

190

198

221

205

202

193

211

182

207

225

204

211

207

198

204

193

198

*202

204

212

211

6,273

202

12 , 440

Sept.

204

218

232

214

198

185

187

174

220

230

236

218

220

214

214

230

232

211

214

230

229

207

223

216

218

221

241

223

214

218

6,491

216

12,870

Calendar year 1955: Max 7,280 Min 63 Mean 328 Ac--ft 237,700

Water year 1955-56: Max 7,280 Mln 108 Mean 473 Ac-ft 343,300

Peak discharge (base. 5.500 cfs).--Dec. 6 (4 a.m.) 5.540 cfs (10.28 ft); Dec. 19 (2 p.m.) 9,280 

cfs (12.74 ft); Dec. 21 (11 p.m.) 13,300 cfs (15.06 ft); Jan. 7 (7 a.m.) 4,300 cfs (9.33 ft); Jan. 15 

(1 p.m.) 8,870 cfs (l2.48 ft); Feb. 21 (9:30 p.m.) 7,430 cfs (11.58 ft).

* Discharge measurement made on this day.
516 RUSSIAN RIVER BASIN 

East Fork Russian River near Ukiah, Calif.

Location. Lat 39°11'50", long 123°10'25", in Yokayo Ranoho Grant, on left bank on upstream side of private road bridge, 1.3 miles upstream from mouth and 3.7 miles northeast of Ukiah, Mendooino County.

Drainage area.--104 sq mi.

Records available. August 1911 to September 1913, October 1951 to June 1956 (discontinued).

Gage. Water-stage recorder. Datum of gage is 627.42 ft above mean sea level (levels by 

TTorps of Engineers). Prior to October 1951, staff gage at site half a mile downstream 

at different datum.

Average discharge. 6 years (1911-13, 1951-55), 328 cfs (237,500 acre-ft per year).

Extremes. Maximum discharge during period October 1955 to June 1956, 13,300 cfs Dec. 21 

Tgage" height, 16.86 ft), from rating curve extended above 1,700 cfs on basis of peak 

flow at station upstream which was defined to 8,600 cfs; minimum daily, 127 cfs Nov. 28.

1911-13, 1951-56: Maximum discharge, that of Dec. 21, 1955; no flow Aug. 13-15, 

1913.

Remarks.--Records fair. Flow greatly affected by diversion from Eel River through Potter 

Valley powerhouse (see p. 529). Small diversions above station for irrigation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

209

212

212

232

222

206

226

222

240

243

236

236

236

232

218

236

236

243

246

246

243

243

240

*246

250

246

236

236

246

243

236

7,254

234

14,390

Nov.

246

243

240

240

243

243

246

246

246

246

250

246

274

278

270

274

212

232

266

302

248

165

346

310

209

200

194

127

139

*148

7,129

238

14,140

Dec.

215

270

218

191

742

2,320

350

500

550

350

260

210

200

190

250

320

650

2,100

5,000

1,300

4,100

7 . 500

*2j700

750

882

1,100

813

550

*370

290

244

35,285

1,138

69,990

Jan.

374

457

414

565

708

550

3,000

1,300

835

1,150

820

640

1,000

5.600

5,400

1,700

1,050

980

640

1,350

890

1,250

1,080

850

1,600

1,500

1,250

930

780

668

613

39,944

1,289

79,230

Feb.

564

540

512

490

477

462

*450

441

432

429

426

411

411

405

402

396

396

393

850

4,000

4.550

3,290

1,400

900

1,650

1,050

815

905

810

28,037

967

55,610

Mar.

679

630

602

602

686

609

560

556

518

500

484

471

461

452

*456

426

420

417

414

411

408

402

599

599

596

595

588

588

579

376

379

14,621

472

29,000

Apr.

376

574

571

568

565

565

351

348

357

346

357

348

360

352

554

546

550

317

317

517

288

514

530

522

*296

527

343

552

555

532

10,218

341

20,270

May

514

519

552

540

551

562

5SO

357

343

546

548

540

340

555

555

552

522

527

550

286

509

306

304

296

288

291

295

288

259

255

258

9,824

517

19,490

June

240

175

162

187

208

*210

202

184

-

-

.

-

-

-

-

.

-

-

-

-

_

-

-

-

_

-

-

-

-

-

-

-

July Aug. Sept.

Calendar year 1955 : Max 7,300 Mln 65 Mean 331 Ac-ft 239,700

Water year 1955-56 : Max - Mln - Mean - Ac-ft -

Peak discharge (base. 5.200 cfs l.--Dec. 6 (5 a.m.) 4,880 cfs (12.15 ft); Dec. 19 (about 3 p.m.) 

about 8,800 cfs; Dec. 21 (11:30 p.m.) 15,500 cfs (16.86 ft); Jan. 7 (about 8 a.m.) about 4,100 cfs; 

Jan. 15 (about 2 p.m.) about 8,400 cfs; Feb. 21 (about 10 p.m.) about 7,500 cfs.

* Discharge measurement made on this day.
RUSSIAN RIVER BASIN 517

Russian River near Hopland, Calif.

Location. Lat 39°01'35", long 123°07'45", in Rancho de Sanel Grant, on right bank 0.2 mile 

downstream from McNab Creek, 4 miles north of Hopland, Mendocino County, and 17 miles 

upstream from Sulphur Creek.

Drainage area. 362 sq mi.

Records available. December 1939 to September 1956.

Gage Water-stage recorder. Datum of gage is 497.43 ft above mean sea level, datum of 

1929. Prior to Sept. 9, 1943, wire-weight gage at same site and datum.

Average discharge.--16 years (1940-56), 706 cfs (511,100 acre-ft per year).

Extremes.--Maximum discharge during year, 45,000 cfs Dec. 22 (gage height, 27.00 ft), from 

rating curve extended above 34,000 cfs; minimum daily, 145 cfs June 14-16.

1939-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, 26 cfs Dec. 18, 

1943, June 26, 1949.

Flood in December 1937 reached a stage of 30.0 ft, from floodmarks.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow considerably affected by diversion into basin (see Remarks for East Fork Russian 

River near Calpella). Small diversions above station for irrigation. Records of 

chemical analyses for the water year 1956 are given in WSP 1453.

Revisions. WSP 1041: Drainage area.

Discharge, in cubic feet per second, water year October 1955to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

st204

207

210

201

210

210

220

228

228

228

224

224

220

217

228

231

231

231

234

234

234

*231

228

228

228

220

224

228

228

6,859

221

13,600

Nov.

228 

228

228

228

228

228

228

228

228

228

228

231

245

245

242

242

228

198

245

269

465

231

422

538

294

249

231

207

168

171

7,629

254

15,130

Dec.

*245 

380

294

249

583

7,270

1,600

900

1,400

918

728

605

545

486

473

600

1,160

5,810

22,000

8,440

8,200

*55.800

14,300

*4,450

3,560

4,370

3,430

*2,350

1,570

1,160

924

132,800

4,284

263,400

Jan.

1,240 

1,130

976

1,360

1,810

1,540

7,060

5,320

2,850

3,170

2,650

2,200

2,300

*17,000

19.900

7,820

4,240

3,700

3,240

4,290

3,460

3,680

3,840

*3,000

*5,300

4,650

4,060

3,210

2,620

2,300

1,950

131,866

4,254

261,600

Feb.

1,800 

1,700

1,500

*1,400

1,300

1,200

1,100

1,050

970

910

880

850

810

780

750

740

730

720

2,200

10,000

14.200

*13,700

6,470

4,290

4,910

4,040

3,100

2,790

2,840

------

87,730

3,025

174,000

Mar.

2.500 

2,100

1,900

1,850

2,000

1,900

1,650

1,500

1,400

1,300

1,200

1,100

1,050

960

900

*840

810

790

770

740

722

704

686

674

662

650

632

626

615

600

600

34,431

1,111

68,290

Apr.

595 

570

550

535

525

516

504

492

492

488

492

500

484

476

464

472

456

440

428

420

408

394

404

400

*394

404

412

404

394

394

13,907

464

27,580

Hay

388 

382

388

394

404

424

4,28

420

404

400

400

394

391

391

388

385

379

376

376

361

325

328

325

325

316

313

313

310

302

280

268

11,278

364

22,370

June

270 

250

224

222

*230

235

230

220

200

175

170

160

150

145

145

145

150

150

180

190

200

2OO

190

180

190

180

175

170

170

175

5,671

189

11,250

July

175 

175

175

170

180

180

175

190

185

180

175

175

181

177

201

205

185

*177

162

158

165

169

177

173

165

177

181

181

189

181

185

5,524

178

10,960

Aug.

189 

185

185

197

201

189

193

177

169

181

185

185

201

210

189

185

185

185

169

210

201

189

197

189

185

185

185

*193

193

197

201

5,885

190

11,670

Sept.

197 

201

214

214

193

177

165

165

165

201

218

205

205

197

197

197

218

205

189

205

210

205

189

205

189

197

205

228

197

197

5,950

198

11,800

Calendar year 1955 : Max 33,800 Min 117 Mean 715 Ac-ft 517,400

Water year 1955-56 : Max 33,800 Mln 145 Mean 1,228 Ac-ft 891,600

Peak discharge (base, 9.60O cfs).--

cfs (23.06 ft); Dec. 22 (4:30 a.m.) 4

Dec. 6 (10 a.m.) 13,000 cfs (16.80 ft); Dec. 19 ('9 p.m.) 32.7OO 

5,000 cfs (27.00 ft); Jan. 7 (11 p.m.) 1O,200 ofs (14.38 ft);

Jan. 15 (6 p.m.) 28,4oO cfs (21.63 ft); Feb. 22'(2 a.m.) 21,9OO cfs (19.47 ft).

Note 

dlscharg

15 (6 p.m.) 28,400 cfs (21.63 ft); Feb. 22 (2 a.m.) 21,9OO cfs (19.47 ft). 

Discharge measurement made on this day.

ite. No gage-height record Dec. 7-9, Jan. 11-13, Jan. 30 to Feb. 19, Mar. 1-2O, June 6 to July 12,-, 

:harge estimated on basis of records for station near Cloverdale.

493801 0-59-34
518 RUSSIAN RIVER BASIN

Russian River near Clover-dale, Calif.

Location.--Lat 38°52'55", long 123°03'15", in SWi sec. 14, T. 12 N., R. 11 W., on left 

bank at Lambert Ranch, 400 ft downstream from Commisky Creek and 5 miles northwest of 

Cloverdale.

Drainage area. 502 sq mi.

Records available. July 1951 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 373.44 ft above mean sea level (levels bv 

Corps of Engineers).

Average discharge. 5 years, 1,093 cfs (791,300 acre-ft per year).

Ex tremes.--Max Imum discharge during year, 53,000 cfs Dec. 22 (gage height, 30.9 ft, from 

floodmarks), from rating curve extended above 21,000 cfs on basis of peak flow determination from flow at upstream and downstream stations; minimum daily, 141 cfs June 16 

1951-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, 98 cfs Nov. 10,

Remarks --Records good. Plow considerably affected by diversion into basin (see Remarks 

for East Pork Russian River near Calpella). Small diversions above station for irrigation.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used May 29 to Aug. 5)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

5.4 

5.7 

6.0 

7.0 

8.0

168

244

330

700

1,240

10.0

12.0

18.0

28.0

2,980

5,420

16,100

43,700

4.7 

5.0 

6.0 

7.0 

8.0

138

184

390

750

1,320

9.0

11.0

12.0

18.0

28.0

2,080

4,100

5,420

16,100

43,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

£1

32

23

24

35

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

190 

192

204

202

212

207

207

212

217

2£8

233

228

228

228

225

217

233

£36

239

241

241

241

£39

239

241

*241

239

233

£33

241

241

7,008

226

13,900

Nov.

241 

247

244

£44

250

250

250

250

250

244

244

244

261

272

264

266

266

217

261

297

486

300

327

654

370

297

272

250

197

192

8,407

£80

16,680

Dec.

*21i 

402

342

286

432

7,140

1,780

945

1,510

930

696

556

468

423

412

486

804

5,730

22,500

14,600

9,270

41 . 500

22,500

6,630

5,040

6,900

4,970

*3,450

2,570

2,100

1,790

167,376

5,399

332,000

Jan.

2,510 

2,090

1.820

2,550

3,130

2,730

10,900

9,220

4,710

5,240

4,290

3,190

3,290

17,300

25.500

*13,500

5,390

4,320

3,500

5,360

4,220

4,220

5,210

3,730

*7,710

7,4£0

6,360

4,510

3,430

2,820

3,410

180,580

5,825

358,200

Feb.

2,030 

1,770

1,600

*1,470

1,380

1,270

1,180

1,110

1,040

986

950

915

880

845

815

785

770

770

2,310

13 , 600

*19,600

*21.800

9,800

5,110

6,410

4,960

3,600

3,240

3,510

_ _____

114,506

3,948

227,100

Mar.

2.650 

2,270

2,070

1,940

2,120

£,060

1,750

1,590

1,490

1,380

1,280

1,200

1,130

1,080

1,010

*956

925

890

865

840

815

790

760

741

718

705

682

669

652

636

644

37,288

1,203

73,960

Apr.

636

612

596

584

573

562

548

528

528

531

573

588

545

538

503

520

492

469

457

448

453

415

439

436

*433

506

514

482

454

451

15,394

513

30,530

May

430 

408

418

454

475

524

538

503

47 £

460

460

442

427

418

405

398

390

376

380

373

348

346

344

340

331

324

32£

324

309

288

"?~7R '-1°

12,303

397

24,400

June

280 

264

£30

£24

*236

240

238

232

206

171

171

16£

149

144

142

141

148

149

174

181

188

189

181

174

181

170

162

160

160

165

5,612

187

11,130

July

162 

162

160

160

173

166

160

178

170

165

158

152

157

157

163

171

163

*157

146

144

145

149

152

15£

149

154

158

157

168

166

168

4,94£

159

9,800

Aug.

170 

170

170

173

181

179

179

178

168

170

181

178

181

193

182

184

176

188

174

195

200

193

197

193

188

189

188

*189

195

195

200

5,697

184

11,300

Sept.

200 

198

206

211

200

186

178

176

173

£00

209

211

206

200

198

200

213

215

£02

202

209

£09

197

£09

£00

202

206

220

206

206

6,048

£0£

12,000

Calendar year 1955: Max 41,500 Min 144 Mean 867 Ac-ft 627,600

Water year 1955-56: Max 41,500 Min 141 Mean 1,544 Ac-ft 1,121,000

ak discharge (base. 12.400 cfsl. Dec. 20 (2 a.m.) 27,300 cfs (22.50 ft); Dec. £2 (12 m.) 

53.000 cfs (30.9 ft): Jan. 7 (4 p.m.) 15,800 cfs (17.85 ft); Jan. 15 (lO:30 p.m.) 29,700 cfs (23.34 

ft); Feb. 2£ (5 a.m.) 28,400 cfs (22.90 ft). 

* Discharge measurement made on this day.
RUSSIAN RIVER BASIN 519

Russian River near Healdsburg, Calif.

Location. Lat 38°36'48", long 122°50'07", in Sotoyome Grant, on left bank 2 miles east of 

rtealdsburg, Sonoma County, and 3.5 miles upstream from Dry Creek.

Drainage area. 791 sq mi.

Records available. December 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 76.84 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge.--16 years (1940-56), 1,398 cfs (1,012,000 acre-ft per year).

Extremes. Maximum discharge during year, 65,400 cfs Dec. 22 (gage height, 26.16 ft); minimum daily, 130 cfs July 25-31.

1939-56: Maximum discharge, 67,000 cfs Feb. 28, 1940 (gage height, 30.0 ft); minimum daily, 38 cfs July 2, 1950.

Flood in December 1937 reached a stage of 30.8 ft, from floodmarks.

Remarks. Records good except those for period of indefinite stage-discharge relation, 

which are fair. Several small diversions for irrigation above station. Plow also affected by diversion into basin (see Remarks for East Fork Russian River near Calpella). 

Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 981: 1942. WSP 1041: Drainage area.

Rating tables, water year 1955-56, except period of Indefinite stage-discharge 

relation (gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 15 Jan. 16 to Sept. 30

0.4 170 5.0 3,050 0.3 210 5.0 3,400

.7 240 7.0 5,700 .6 275 7.0 6,600

1.0 335 9.0 9,100 1.0 390 12.0 18,200

1.5 535 13.0 17,500 2.0 835 20.0 44,000

2.0 780 18.0 31,400 3.0 1.460

3.0 1,370 24.0 55,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

198 

195

192

192

230

*210

205

205

205

218

225

225

225

222

228

228

225

232 

238

*246

243

246

249

215

240

246

243

240

235

235

238

7,002

226

13,890

Nov.

?To~ 238

243

243

249

249

249

249

246

246

246

249

270

279

279

285

291

285

273

297

418

478

370

540

555

414

352

321

285

255

9,174

306

18,200

Dec.

*258

m

386

352

346

*4,580

4,280

1,520

1,530

1,400

1,080

890

765

680

610

620

877

5,060 

*33,100

34,500

16,700

«g55.900

g47,000

*g!6,700

8,420

13,800

*9,940

6,440

4,520

3,500

3,260

277,308

8,945

550,000

Jan.

4,460 

3,820

5.020

4,260

5,870

4,740

13,900

17,400

8,520

8,870

7,880

5,540

5,280

16,100

32.500

27,700

315,000

a9,000 

a7,000

8,520

7,770

6,690

8,460

6,370

*11,200

13,200

12,600

9,450

6,620

5,160

4,180

301,080

9,712

597,200

Feb.

3,460 

2,970

2,640

2,400

2,200

*2,040

1,860

1,730

1,600

1,510

1,420

1,360

1,280

1,220

1,170

1,110

1,070

1.060 

2,640

19,500

30,300

44,000

24, lOO

12,100

11,900

10,600

7,220

5,770

6,290

206,520

7,121

409,600

Mar.

4. 850 

4,600

3,510

3,170

3,160

3,140

2,730

2,500

2,290

2,110

1,960

1,820

1,710

1,610

1,520

1,420

*1,360

1,300 

1,260

1,210

1,180

1,130

1,090

1,050

1,030

992

974

938

914

890

874

57,692

1,861

114,400

Apr.

874 

852

830

805

770

750

695

695

695

690

725

874

790

740

720

695

6S5

655 

625

600

580

562

549

544

S5T

*705

938

W

645

605

21,167

706

41,980

May

572 

554

540

625

705

780

852

790

740

700

675

645

605

576

554

532

516

500 

480

476

468

450

446

436

425

414

404

397

390

380

558

16,985

548

35,690

June

543 

33T

318

*295

275

272

270

262

258

244

226

210

195

185

185

180

170

170 

170

175

170

160

170

180

180

170

160

TfO

165

160

6,422

214

12,740

July

155 

160

160

160

155

150

140

150

150

150

155

155

145

150

155

160

160

165 

*TSO~

155

150

150

145

155

150

130

130

130

130

150

150

4,580

148

9,080

Aug.

ISO" 155

140

135

140

140

140

140

140

145

145

140

140

135

135

140

145

150 

150

150

150

150

150

150

150

150

*145

150

150

150

150

4,470

144

8,870

Sept.

155 

155

160

165

175

175

170

165

155

150

145

140

IiT

150

160

165

165

170 

180

200

210

200

200

185

185

185

180

180

205

250

5,205

174

10,320

Calendar year 1955: Max 53,900 Mln 128 Mean 1,298 Ac-ft 939,500

Water Jater year year 1955-56: 1955-56: Max Max 53,900 55,900 Mln Mln 130 150 Mean Mean 2,507 2,507 Ac-ft Ac-ft 1,820,000 1,820,000

Peak discharge (base. 19,000 of a). Dec. 20 (5 a.m.) 45,100 cfs (21.78 ft); Dec. 22 (9 p.m.} 65,400 

:fs (26.16 ft); Jan. 7 (11 p.m.) 25,800 ofs (16.10 ft); Jan. 15 (l p.m.) 56,000 efs (17.90 ft); 

?eb. 22 (4:30 p.m.) 47,900 cfs (21.07 ft).

.

. .. , (21.07 ft). 

Discharge measurement made on this day.

ar Guernevllle. 

timated on basis of
520 RUSSIAN RIVER BASIN

Dry Creek near Cloverdale, Calif.

Location. -=Lat 38°44'59", long 123°05'28", in NE^NE^ sec. 5, T. 10 N., R. 11 W., on left 

bank 500 ft downstream from Smith Creek and 5 miles southwest of Cloverdale.

Drainage area. 87.8 sq mi.

Records available. November 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage is' 320 ft (from topographic map).

Average discharge. 14 years (1942-56), 142 cfs (102,800 acre-ft per year).

Extremes.--Maximum discharge during year, 17,600 cfs Dec. 22 (gage height, 17.80 ft), from 

rating curve extended above 9,400 cfs on basis of slope-area determination of peak 

flow; minimum, 0.3 cfs Oct. 1.

1941-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.1 cfs several days 

in 1944, 1949, 1951-53.

Flood in December 1937 reached a stage of about 18 ft, from floodmarks.

Remarks.--Records good. No regulation or diversion.

Revisions (water years). WSP 1395: 1942(M), 1943, 1946(M), 1951-54(M), drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. 25 to Jan. l)

2.6 

2.8 

3.0

Oct. 1 to Dec. 21

0.2 3.2

.4 3.4

1.2 3.7

2.0 4.0

5.3 5.0

12 7.0

10.0

57 13.0

95

165

300

455

1,140

2,900

6,000

9,900

3.0 

3.2

Dec. 22 to Sept. 3O

0.6 3.7

1.0 4.0

3.0 5.0

7.8 6.0

15 8.0

37 14.0

145

230

600

1,300

3,500

11,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

0.3~4"

.5

.6

.5

.4

.4

.4

.5

.9

1.2

1.2

1.0

.9

.9

.9

1.0

1.1

1.2

1.4

1.4

1.3

1.3

1.2

1.1

*1.2

1.2

1.3

1.3

1.2 

1.2

29.4

0.95

58

Nov.

1.5

T7J

1.4

1.4

1.5

1.6

1.6

1.5

1.4

1.4

1.3

1.5

5.9

6.4

3.5

4.5

9.0

12

29

52

-49

22

~64 110

29

20

15

15

11

9.7

461.9

15.4

916

Dec.

19 *25

19

15

255

890

165

89

93

65

52

46

41

56

55

57

129

5,590

*8,750

2,550

4,950

*10.500

2^510

1,660

*1,860

1,170

*714

555

518 

486

46,674

1,506

92,580

Jan.

950

702

595

1,010

822

714

2,280

1,620

1,060

1,200

920

714

758

2,590

3.500

*1,790

948

678

546

726

565

600 

570

522

1,540

1,240

1,110

801

590

470

.£§_

52,086

1,055

65,640

Feb.

356

281

248

227

209

*194

170

155

140

150

122

115

110

100

95

90

85

85

558

2,550

4.790

*4,590 

1,680

856

878

590

474

470

442

20,550

708

40,720

Mar.

578

335

504

284

278

260

255

215

203

188

179

170

162

152

145

140

*155

128

122

125

125

120 

112

108

105

98

92

-90

85

85 

85

5,245

169

10,400

Apr.

80

72

70

68

62

60

59

57

55

59

85

66

55

53

49

48

46

45

42

41

59

f

38

*41

90

60

46

42

39

1,643

54.8

3,260

May

39

38

39

48

46

48

42

41

38

57

57

34

55

29

27

27

26

24

24

25

22

21 

20

19

18

17

15

14

14

15 

16

891

28.7

1,770

June

15

14

13

13

*13

12

11

11

9.8

9.8

9.0

7.8

7.8

7.8

8.4

7.8

7.8

7.8

8.4

7.8

7.8

7.2 

6.6

6.6

6.6

6.0

5.5

4.5

4.1

4.5

261.4

8.71

518

July

4.5

4.5

4.5

4.1

4.1

4.1

4.1

5.7

3.7

5.7

5.3

5.5

5.3

5.5

3.3

5.0

2.7

*2.7

2.7

2.7

2.6

2.6 

2.0

2.0

2.0

1.9

1.9

1.9

1.9

1.9 

1.9

95.9

3.05

186

Aug.

1.7

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.3

1.1

1.5

1.5

1.3

1.1

1.1

1.5

1.5

1.5

1.1

1.1 

1.0

.8

.7

.7

*.7

.7

.8

1.0 

1.0

56.4

1.17

72

Sept.

0.8

.8

1.1

1.0

1.0

.7

.7

1.0

1.0

1.0

.8

1.0

1.0

1.0

.8

1.0

1.1

1.1

1.0

1.0

1.0

.8 

.8

1.0

1.0

1.0

.8

.8

.7

.7

27.5

0.92

55

Calendar year 1955: Max 10,500 Mln 0.2 Mean 175 Ac-ft 126,800

Water year 1955-56: Max 10,500 Mln 0.3 Mean 295 Ac-ft 214,200

Peak discharge (base. 5.500 cfs). Dec. IB (12 p.m.) 12,100 efs (14.45 ft); Dec. 22 (1 a.m.) 

17,600 cfs (17.80 ft); Jan. 13 (2 p.m.) 4,270 cfs (8.64 ft); Feb. 21 (11 p.m.) 7,200 cfs (11.00 ft), 

* Discharge measurement made on this day.
RUSSIAN RIVER BASIN 521

Russian River near Guerneville, Calif.

Location. Lat 38°30iOO", long 122°56'05", in NE£ sec. 35, T. 8 N., R. 10 W., on left bank 

0.6 mile downstream from Hobson Creek and 3.4 miles east of Guerneville.

Drainage area. 1,342 sq mi.

Records available.--December 1939 to September 1956. Prior to October 1954, published as 

"at Guerneville."

Gage.--Water-stage recorder. Altitude of gage is 70 ft (from topographic map). Prior to 

"(Jet. I, 1954, wire-weight gage at bridge 5.3 miles downstream at different datum. Supplementary water-stage recorder 2.1 miles downstream used during periods of low flow 

1948-54.

Average discharge.--16 years (1940-56), 2,202 cfs (1,594,000 acre-ft per year); median of 

yearly mean discharges, 1,900 cfs (1,376,000 acre-ft per year).

Extremes. Maximum discharge during year, 90,100 cfs Dec. 23 (gage height,'49.7 ft, from 

floodmarks); minimum daily, 144 cfs July 25, 26, 28, 30.

1939-56: Maximum discharge, that of Dec. 23, 1955; minimum daily, 61 cfs July 4, 

1950.

Remarks.--Records good. Many diversions above station for irrigation. Plow also affected 

by "diversion into basin (see Remarks for East Pork Russian River near Calpella). Records of chemical analyses for the water year 1956 are given in WSP 1453.

Revisions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 23 Dec. 24 to Sept. 30

3.4 159

4.0 325

6.0 1,080

8.0 2,100

12.0 4,950

17.0 11,300

30.0 36,800

49.0 88,000

3.7 

4.0 

5.0 

8.0

11.0

134

20O

476

1,560

3,200

14.O 5,910

18.0 12,000

30.0 36,800

49.0 88,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac-ft|

Oct.

181

181

181 

178

T5T

209

199 

191

196

199

212

215

209

209

209

209

209

212 

217

*220

223

226

52~6 229

223

223

223 

220

217

01 C

C.LD

215

6,467

209

12,830

Nov.

215

217

220 

220

223

226

226 

223

223

223

220

217

242

257

262

265

271

283 

280

286

322

450

440

460

607

481

395 

351

319

286

8,910

297

17,670

Dec.

274 *2~5o

373 

386

392

4,740

*6,930 

2,460

1,890

1,920

1,400

1,120

932

808

719

712

925

4,880 

44,400

* 66, 800

*45,100

73,800

87.900

68,900

32,000

27,800

*27,300 

14,600

8,480

5,680

5,910

539,811

17,410

*1,071

Jan.

8,100

7,530

4.930 

5,570

10,300

7,530

18,700 

40 , 500

20,800

17,100

15,600

9,660

7,950

22,900

49,400

50.700

25,500

14,100 

10,500

12,100

12,400

10,300

12,400

10,100

17,600

22,900

22,800 

18,200

12,300

9,360

7,880

515,710

16,640

*1,023

Feb.

*6,220

5,040

4,430 

3,970

3,580

3,260

2,960 

2,710

2,490

2,300

2,170

2,060

1,950

1,870

1,780

1,700

1,630

1,570 

3,640

23,200

46,400

60.600

59,100

29,100

19,100

17,700

11,700 

9,050

9,040

339,720

11,710

673,800

Mar.

*7.220

6,020

5,230 

4,770

4,630

4,520

4,010 

3,600

3,300

3,030

2,770

2,570

2,380

2,240

2,100

1,980

1,890

1,800 

1,730

1,650

1,600

1,550

1,500

1,460

1,410

1,380

1,330 

1,290

1,260

1,220

1,_200

82,640

2,666

163,900

Apr.

1,200

*1,160

1,120 

1,100

1,070

1,040

1,010 

988

980

977

1,040

1,190

1,090

1,030

1,000

988

974

942

910

886

868

848

820

820

812

1,000

1,570 

1,180

1,020

*942

30,575

1,019

60,640

May

890

854

837 

949

1,060

1,110

1.180 

1,090

1,030

963

946

907

865

830

798

774

750

722

694

671

652

671

639

620

605

587

572

557

539

530

521

24,413

788

48,420

June

506 4"88~

464 

*434

413

404

404 

389

380

372

333

310

292

237

232

217

210

207 

210

212

214

195

214

227

222

214

193 

202

195

166

8,776

293

17,410

July

176

178

178 

178

174

161

152 

169

169

169

174

169

158

165

169

176

174

181 

*T78-

174

167

165

161

150

144

144

146 

144

146

144

148

5,081

164

10,080

Aug.

152

154

152 150-

IB?

156

154 

156

156

158

156

156

154

152

150

156

161

163 

163

165

165

163

165

165

167

165

*158 

167

163

163 

165

4,922

159

9,760

Sept.

169

172

174 

178

195

198

190 

186

176

169

161

154

156

165

174

178

183

183 

210

219

232

219

219

202

205

205

200 

190

224

255

5,741

191

11,390

Calendar year 1955: Max 87,900 Min 125 Mean 2,208 Ac-ft 1,599,000

Water year 1955-56: Max 87,900 Min 144 Mean 4,296 Ac-ft 3,120,000

> Discharge measurement made on this day. 

* Expressed in thousands.
522 OUALALA RIVER BASIN

South Pork Oualala River near Annapolis, Calif.

Location.--Lat 38°42'10", long 123°25'00", in NE£ sec. 21, T. 10 N., R. 14 W., on right 

bank 1,000 ft downstream from Wheatfield Pork Oualala River and 4.8 miles west of 

Annapolis.

Drainage area.--161 sq mi.

Records available. October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 60 ft (from topographic map).

Average discharge.--6 years, 482 cfs (349,000 acre-ft per year).

Extremes.--Maximum discharge during year, 55,000 cfs Dec. 22 (gage height, 24.57 ft), from 

rating curve extended above 13,000 cfs on basis of slope-area determination of peak 

flow; minimum, 2.6 cfs Oct. 5-9.

1950-56: Maximum discharge, that of Dec. 22, 1955; minimum, 0.4 cfs Sept. 13, 1951.

Remarks.--Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic

feet per second) 

(Shifting-control method used Dec. 6-22, Mar. 8-21)

Oct. l to Dec. 22 Dec. 23 to Jan. 15 Jan. 16 to Sept. 30

2.3

2.4

2.5

2.6 

2.8 

3.0

2.3

5.4

9.6

15

32

60

3.5 

4.0 

5.0 

7.0 

9.0 

11.0

240

590

1,540

3,770

7,140

11,500

4.0 

5.0 

6.0 

8.0 

11.0

800

1,430

2,290

4,620

9,700

17.0 28,300

2.0

2.1

2.2

2.3 

2.5 

2.7 

3.0 

3.5

1.0 

4.2 

9.5

17

41

73

132

266

4.0

4.5

5.0

6.0

8.0

10.0

13.0

470

750

1,120

2,050

4,580

7,800

14,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.9

2.9

*2.9

3.2

2_._6

2.6 

2.6

2.6

2.6

5.8

12

T?

9.6

7.4

6.2

5.8

*5.4

5.0

5.8

7.8

8.2

8.6 

8.2

7.4

6.6

7.4

8.2

8.2

7.8

7.0

6.6

191.9

6.19

381

Nov.

6.6

6.2

6.2

6.2

6.6

7.0 

7.4

7.4

7.0

6.2

5.8

1F~5.4

75

33

20

33

40

196

323

463

*122 

446

410

138

78

56

44

36

31

2,634.0

87.8

5,220

Dec.

62

110

72

54

355

5,470 

850

360

330

200

138

104

80

66

57

90

368

6,600

17,900

5,680

*8, 180

*25,500 

7,860

2,950

2,020

2,910

2,180

1,440

 1,090

952

877

94,855

3,060

188, 100

Jan.

1,920

1,280

1,020

2,130

1,990

1,450 

6,000

3,930

2,190

2,740

2,170

1,570

1,570

 9,030

*9.410

*4,380

1,870

1,100

778

1,310

1,020

1,070

1,200

932

2,090

2,440

2,250

1,730

1,190

897

720

73,377

2,367

145,500

Feb.

608

526

*465

429

402

372 

346

323

304

290

280

273

260

247

240

231

225

222

i.CSo"

3,960

9,440

12,300 

5,380

2,440

2,660

1,700

1,130

925

834

47,852

1,650

94,910

Mar.

636 5"6T

520

485

475

438 

393

367

346

323

300

*286

266

253

234

216

207

196

191

178

173

168

159

152

147

143

134

130

128

122

T24

8,454

273

16,770

Apr.

122

144

110

102

98

94 

92

86

84

84

141

176

120

106

98

94

86

82

75

71

70

68 

*666"?

70

177

194

118

100

88

3,052

102

6,050

May

81

77

81

132

141

168 

145

124

110

102

98

86

81

75

70

66

64

63

61

59

58

54 

53

52

48

47

46

44

42

4?

42

2,412

77.8

4,780

June

41

4T

38

37

34

33 

33

*33

33

32

27

26

26

26

27

27

26

24

26

26

24

23 

22

20

20

19

18

17

16

15

810

27.0

1,610

July

15

15

14

13

13

13 

12

12

12

 11

12

12

12

12

13

14

13

12

12

11

10

9.5 

9.5

8.9

8.3

.7

' .2.7

.7

.7

.7

344.9

11.1

684

Aug.

7.7

77Z

6.7

6.2

5.7

5.5 

5.7

5.7

5.7

5.7

5.2

5.2

5.2

4.7

4.2

4.7

 5.2

5.2

5.2

5.2

5.2

5.7 

4.7

4.2

4.2

4.2

4.2

3/7.

3.7

3.7

4.7

160.0

5.16

317

Sept.

4.7

4.7

5.2

5.2

5.2

fc*

5.7

5.7

5.7

5.7

5.7

5.7

5,7

5,7

5.2

5.2

5,2

5,2

4,7

4.2

4.7 

4.7

 4.2

4.2

3.7

3.7

3.7

3.7

3.7

148.0

4.93

294

Calendar year 1955: Max 25,500 Mln 2.6 Mean 406 Ac-ft 294,000

Water year 1955-56: Max 25,500 Mln 2.6 Mean 640 Ae-ft 464,600

Peak discharge (base, 10,000 efs). Dec. 6 (8:30 a.m.) 10,400 ofs (10.48 ft); Dee. 19 (3 p.m.)

24.700 cfs (15.96 ft): Dee. 22 (2:30 a.m.) 55,000 cfs (24.57 ft); Jan. 15 (4 p.m.) 12,800 ofs (12.35

ft); Feb. 21 (12 p.m.) 18,000 efs (14.28 ft).

* Discharge measurement made on this day.
NAVARRO RIVER BASIN 523

Navarro River near Navarro, Calif.

Location. Lat 39°10'15". long 123°39'55", in SE^ see. 7, T. 15 N., R. 16 W., on left

 bank 2.7 miles downstream from North Fork, 5.4 miles upstream from mouth, and 

6.6 miles west of Navarro.

Drainage area. 304 sq mi.

Records available. October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 20 ft (from topographic map).

Average discharge. 6 years, 606 cfs (438,700 aere-ft per year).

Extremes. Maximum discharge during year, 64,500 cfs Dec. 22 (gage height, 40.60 ft),

 from rating curve extended above 19,000 cfs on basis of slope-area determination of 

peak flow; minimum, 8.6 efs Sept. 28-30.

1950-56- Maximum discharge, that of Dee. 22, 1955; minimum, 6.2 efs Sept. 5-9, 

1955.

Flood in December 1937 reached a stage of 38.2 ft, from floodmarks.

Revisions. The maximum discharge for the water year 1954 has been revised to 

30,400 cfs Jan. 17, 1954 (gage height, 33.42 ft), superseding figure published in 

WSP 1345.

Remarks.--Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Nov. 19-28, Dec. 1-6, May 28 to June 15)

Oct. 1 to Dec. 19 Dec. 19 to Sept. 30

3.6

3.7

3.8 

4.0 

4.5 

5.0

154

278

6.0

7.0

8.0

10.0

16.0

26.0

560

885

1,330

2,600

7,700

18,000

3.7

3.8 

4.0 

4.4 

5.0 

6.0

6.0

11

26

75

189

442

8.0 

12.0 

18.0 

28.0 

33. O 

36.0

1,200

3,500

8,30O

20,20O

29,200

39,100

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

3O

31

Total

Mean

Ac- ft

Oct.

11

1.8

11

11

11

11

12

11

12

16

18

18

17

15

13

13

13

13

*12

14

14

14

14

14

13

12

14

14

14

13

12

409.8

13.2

813

Calendar year

Nov.

12

12

12

13

13

14

14

14

14

13

13

12

17

26

31

26

29

34

43

93

*189

132

126

309

145

85

59

48

40

35

1,623

54.1

3,220

Dec.

10

189

145

97

113

3,440

1,160

623

714

569

436

338

268

216

184

194

296

2,720

17,100

8,430

*6,300

*57.800

14,000

4,880

3,630

4,100

3,380

*2,590

1,980

1,570

1,330

118,862

3,834

235,800

Jan.

1,680

1,490

1.260

1,690

2,300

2,040

5,730

5,420

3,090

2,950

2,710

2,100

2,030

9,430

14.900

*7,970

3,640

2,580

2,030

2,460

2,380

2,410

2,920

2,400

3,820

3,880

3,390

2,740

2,130

1,640

1,320

106,530

3,436

211,300

Feb.

1,060

*880

756

666

596

530

479

434

392

357

334

313

295

275

258

241

236

241

825

6,830

17.100

14,200

6,430

3,840

3,720

3,260

2,480

2,150

2,340

71,518

2,466

141,900

Mar.

1,780

1,480

1,280

1,130

1,110

1,070

932

848

788

708

652

593

540

500

462

422

392

368

347

329

311

295

*277

260

248

241

225

213

207

202

207

18,417

594

36,530

Apr.

207

187

176

167

159

154

148

144

142

140

156

185

154

144

138

132

128

122

117

112

108

106

*103

103

106

122

140

115

105

.98

4,118

137

8,170

May

94

91

91

98

108

105

122

106

96

86

88

83

78

74

70

64

62

60

59

59

57

52

51

51

50

49

48

45

45

44

45

2,231

72.0

4,430

June

45

45

43

44

44

43

42

*40

40

40

38

39

37

36

38

40

39

38

39

43

39

36

35

34

34

33

32

30

28

26

1,140

38.0

2,260

July

24

26

26

26

23

25

25

25

25

25

*24

23

23

23

23

23

22

21

21

20

19

18

18

17

17

16

15

T5

15

15

15

653

21.1

1,300

Aug.

15

15

15

15

15

15

15

15

15

14

14

14

14

14

14

13

13

*13

13

13

13

13

13

13

13

12

12

12

12

11

11

419

13.5

831

Sept.

11

11

12

12

12

12

12

11

11.

11

11

11

11

11

11

11

11

11

11

11

10

10

9.8

9.8

*9.8

9.2

9.2

8.6

8.6

8.6

318.6

10.6

632

1955: Max 37,800 Min 6.2 Mean 497 Ac-ft 359,800

Water year 1955-56: Max 37,800 Min 8.6 Mean 891 Ao-ft 647,200

Peak discharge (base. 7,000 cfs).--Dee. 19 (7:30 p.m.) 27.900 cfs (32.47 ft); Dec. 22 (7 a.m.) 

64,500 cfs (40.60 ft); Jan. 7 (10 p.m.) 7,760 cfs (17.40 ft); Jan. 15 (5:30 p.m.) 19,100 cfs 

(27.20 ft); Feb. 21 (12 p.m.) 20,800 cfs (28.40 ft).

* Discharge measurement made on this day.
524 NOYO RIVER BASIN

Noyo River near Fort Bragg, Calif.

Location. Lat 39°26', long 123°44', in SW£ sec. 10, T. 18 N., R. 17 W., on right bank 

0.7 mile downstream from South Fork and 3.5 miles east of Fort Bragg.

Drainage area.--105 sq mi.

Records available.--August 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 50 ft (from topographic map).

Average discharge. 5 years, 267 cfs (193,300 acre-ft per year).

Extremes.--Maximum discharge during year, 22,000 cfs Dec. 22 (gage height, 25.64 ft), from 

rating curve extended above 3,600 cfs on basis of slope-conveyance study; minimum, 

3.8 cfs Sept. 24-28.

1951-56: Maximum discharge, that of Dec. 22, 1955; minimum, 3.5 cfs Sept. 14, 

22-24, 1951.

Remarks.--Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22

3.0 

3.5 

4.0

43 

106 

163 

Z84

19.0

23.0

540

1,600

2,420

4,200

6,950

10,900

17,200 3.5 

4.5

Dec. 22 to Sept. 30

3.4 6.0

7.0 9.0

11 13.0

96

196

390

760

1,660

3,300

5,900

9,100

12,500

17,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

16

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

1*1

4.4

4.4

4.4

4.4

4.4

4.4

4.7

11

12

15

12

6.4

7.2

6.6

6.4

6.4

6.4

*6.8

8.0

8.4

6.6

8.0

7.6

7.6

9.2

6.6

6.6

8.4

7.6

6.6

231.9

7.46

460

Nov.

6^8

6.6

6.6

7.2

8.8

9.2

9.2

6.6

6.4

6.4

8.0

8.0

12

25

20

15

15

24

77

342

*276

117

205

219

117

75

56

47

40

36

1,616.4

60.5

3,600

Dec.

81

146

123

96

246

2,600

843

396

404

316

240

185

146

126

107

107

166

1,210

4,620

3,200

3,090

*15.600

*4,750

1,940

1,220

1,250

1,170

929

737

*577

457

47,504

1,532

94,220

Jan.

433

381

339

462

747

760

1,730

2,000

1,190

1,000

977

615

731

4,630

7,270

3,350

*1,530

1,030

620

907

1,040

1,030

1,310

1,100

1,210

1,320

1,350

1,090

636

664

541

42,595

1,374

84,490

Feb.

445

*370

318

286

262

239

216

202

166

174

165

159

150

143

137

130

129

126

250

1,760

4.410

3,610

2,140

1,350

1,340

1,250

974

664

874

22,663

762

44,990

Mar.

752

620

532

476

468

505

474

426

379

326

266

253

230

210

191

174

162

152

144

136

130

*125

119

112

109

107

100

96

94

11

96

6,099

261

16,060

Apr.

90

64

78

75

73

70

70

66

65

65

69

67

65

64

62

59

57

54

52

51

49

46

46

*46

50

50

51

46

44

_ ___13.

1,617

60.6

3,600

May

42

40

42

56

M

57

53

46

44

44

47

43

39

37

36

35

33

32

32

32

32

31

30

30

30

29

26

27

27

27

27

1,166

37.7

2,320

June

ZT.

27

26

26

25

24

*24

24

23

23

22

22

22

22

23

22

20

20

24

24

20

16

16

16

16

15

15

14

14

13

629

21.0

1,250

July

13.

13

12

12

12

12

12

12

12

12

*12

11

11

12

12

11

11

10

10

10

9.6

9.2

9.2

6.7

6.3

7.9

LJL

7.4

7.4

7.4

7.4

321.6

10.4

638

Aug.

7.4

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

6.6

6.6

6.3

6.3

6.3

6.3

*6.3

6.6

6.6

6.3

6.3

5.9

5.9

5.9

5.9

5.9

5.6

5.6

5.6

572

197.6

6.37

392

Sept.

4.8

4.6

4.6

4.8

4.6

4.6

4.6

4.5

4.5

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

3.6

*3.6

3.6

3.6

3.6

4.5

4.8

128.3

4.28

254

Calendar year 1955 : Max 15,600 Mln 4.1 Mean 205 Ac-ft 146,200

Water year 1955-56 : Max 15,600 Mln 3.6 Mean 346 Ac-ft 252,300

Peak discharge (base. 2.400 efs).--Dee. 6 (9:30 a.m.) 4,600 cfs (13.50 ft): Dec. 19 (6:30 p.m.) 

6,450 cfs (17.23 ft); Dec 22 (7 a.m.) 22,000 cfs (25.64 ft); Jan. 7 (11 p.m.) 2,540 cfs (11.40 ft); 

Jan. 15 (4:30 p.m.) 9,700 cfs (20.43 ft); Feb. 21 (6 p.m.) 5,920 cfs (17.02 ft).

* Discharge-measurement made on this day.
MATTOLE RIVER BASIN 525 

Mattole River near Petrolia, Calif.

Location. La t 40° 18'40", long 124° 16'10", in NWy sec. 11, T. 2 S., R. 2 W. , on right bank 

0.2 mile downstream from Clear Creek, 1.2 miles southeast of Petrolia, and 1.3 miles upstream from North Fork.

Drainage area . 242 sq mi.

Records available. November 1911 to December 1913, October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 40 ft (from topographic map). November 

1911 to December 1913 staff or chain gages at several sites upstream within 0.7 mile of 

present site at various datums. Dec. 11, 1950, to July 14, 1955, water-stage recorder 

at site 0.7 mile upstream at datum 7.48 ft higher.

Average d is charge.--7 years (1912-13, 1950-56), 1,436 cfs (1,040,000 acre-ft per year).

Extremes. Maximum discharge during year, 90,400 cfs Dec. 22 (gage height, 29.60 ft), from 

rating curve extended above 24,000 cfs on basis of slope-area determination of peak 

flow; minimum, 24 cfs Oct. 9, 19, 20, 24, 25.

1911-13, 1950-56: Maximum discharge, that of Dec. 22, 1955; minimum observed, 20 cfs 

Sept. 1, 2, 15-30, Oct. 27-31, 1913.

Remarks.--Records fair. No regulation or diversion.

Revisions (water years).--WSP 1285: 1912-13. WSP 1395: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

30

28

28

28

28

26

26

26

26

86

~SS 124

56

42

36

32

28

26

24

24

26

26

26

24

24

50

*54

50

40

36

30

1,196

38.6

2,370

Nov.

30

28

28

40

50

66

64

52

40

36

32

30

66

232

154

130

194

246

al.100

a4 , 500

a2,200

al,100

al,230

al, 400

a820

a610

a460

a390

a330

a280

15,938

531

31,610

Dec.

*a640

1,100

978

846

2,060

8,830

4,060

2,700

3,280

2,290

1,800

1,470

1,230

1,090

1,010

*2,160

5,140

 21,100

27,300

20,000

38,400

*45,900

15, 800

8,240

7,490

9,060

7,280

5,490

4,480

3,860

3,450

258,534

8,340

512,800

Jan.

3,920

3,740

3,770

6,690

*6,860

6,690

11,200

8,580

6,930

7,240

8,000

6,660

7,290

10,900

18,600

10, 500

5,320

3,840

3,070

2,950

3,100

3,620

6,330

4,270

3,340

2,950

3,000

2,650

2,300

2,010

1, 79_0

178,110

5,745

353,300

Feb.

1,580

1,420

1,270

1,180

1,100

960

904

840

793

737

695

654

621

582

536

504

498

*5S4

930

5,500

19,600

13,200

7,380

4,670

6,580

4,810

3,610

3,910

*5,150

90,718

3,128

179,900

Mar.

4.480

3,670

3,190

3,230

3,470

3,140

2,690

2,300

1,990

1,690

1,500

1,260

*1,160

1,100

976

920

824

772

702

640

588

536

478

447

411

411

357

340

323

318

3T5

44,288

1,429

87,840

Apr.

369 32~3

306

285

275

265

260

250

245

240

240

245

250

240

236

226

222

213

218

208

204

200

200

195

208

213

*204

195

191

187

7,113

237

14,110

May

183

179

195

588" 618

504

441

381

340

*323

312

285

265

255

240

226

218

213

204

200

195

187

183

179

171

167

163

159

155

155

148

8,032

259

15,930

June

148

T44

141

141

138

130

130

127

124

124

120

114

111

114

111

111

108

105

*114

111

102

96

96

93

93

87

87

85

82

11

3,363

112

6,670

July

74

76

74

76

76

76

74

74

74

71

66

66

66

71

71

68

66

*63

61

61

56

54

52

52

52

52

52

52

52

52

48

1,978

63.8

3,920

Aug.

43

43

41

41

45.

43

41

45

41

39

38

38

38

38

36

38

38

39

38

36

35

33

35

35

33

33

35

33

31

31

31

1,164

37.5

2,310

Sept.

30

30

30

28

27.

27

27

28

33

39

43

41

*39

38

35

36

33

33

33

33

31

33

30

30

27

28

30

31

31

31

965

32.2

1,910

Calendar year 1955 : Max 45,900 Min 24 Mean 1,232 Ac-ft 892,200

Water year 1955-56 : Max 45,900 Min 24 Mean 1,670 Ao-ft 1,213,000

Peak discharge (base, 10.000 efs).--Dee. 6 (10 a.m.) 11,400 cfs (11.19 ft); Dec. 19 (5 p.m.) 

38.900 cfs (19793 ft); Dec. 22 (1 a.m.) 90,400 cfs (29.60 ft); Dec. 26 (3 p.m.) 10,100 cfs (10.23 

ft); Jan. 7 (6 a.m.) 11,800 cfs (11.20 ft); Jan. 15 (4:30 p.m.) 25,200 cfs (16.57 ft); Feb. 21 

(1 p.m.) 28,200 cfs (17.40 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for South Pork Eel River near 

Miranda.
526 MATTOLE RIVER BASIN 

North Fork Mattole River at Petrolia, Calif.

Location. La t 40°19i35", long 124°17'35", in NE£ sec. 4, T. 2 S., R. 2 W., on left bank 

0.5 mile west of Petrolia and 0.7 mile upstream from mouth.

Drainage area. 37.6 sq mi.

Records available.--June 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 50 ft (from topographic map). Prior to 

0~ct. 6, 1953, at site 200 ft downstream at same datum.

Average discharge. 5 years, 187 cfs (135,400 acre-ft per year).

Extremes. Maximum discharge during year, 9,600 cfs Dec. 21 (gage height, 10.60 ft), from 

rating curve extended above 1,300 cfs by logarithmic plotting; minimum, 2.5 cfs Sept. 3. 

1951-56: Maximum discharge, that of Dec. 21, 1955; minimum, 2.0 cfs Sept. 4, 1955.

Remarks.--Records fair. Small diversions for irrigation above station. 

Revisions. WSP 1345: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic

feet per second) 

(Shifting-control method used Dec. 6-17, Mar. 14, Sept. 19-3O)

Oct. 1 to Dec. 21 Dec. 22 to Mar. 15 Mar. 16 to Sept. 30

4.6

4.7

4.8 

5.0 

5.3 

5.7

2.0

5.0

11

29

72

160

6.0 

6.5 

7.0 

8.0 

9.0

265

590

1,140

2,900

5,080

5.4 

5.7 

6.2 

6.5 

7.0 

7.5 

9.0

63

106

215

350

760

1,450

5,000

5.2

5.3

5.4

5.5

5.6

5.7 

6.0 

6.2

2.0

4.0

8.6

16

27

44

133

210

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

5.6

4.4

4.4

4.7

4.7

4.7

4.7

5.0

5.6

48

17

9.8

8.0

6.8

6.2

5.6

5.0

5.0

4.7

5.6

5.0 

4.7

4.1

3.2

773

25

*11

6.8

5.0

4.4

4.4

246.4

7.95

489

Nov.

4.7

4.4

4.4

16

19

13

9.8

8.6

6.2

5.0

5.6

6.8

21

34

20

29

46

38

931

SSS

302 

133

391

205

128

98

72

55

43

41

3,328.5

111

6,600

Dec.

*305

211

155

108

460

1,340

430

310

270

187

157

131

102

83

79_

*253

1,570

3,150

3,420

2,450

4,940 

3,990

2,040

964

1,840

2,360

1,350

623

438

322

257

34,295

1,106

68,020

Jan.

490

396

468

1,460

848

1,630

1,810

815

615

966

793

900

1,020

3,240

3,650

966

514

356

286

339

344

862

768

430

370

402

468

389

339

290

*253

26,477

884

52,520

Feb.

210

181

164

149

146

134

124

119

allO

a!05

alOO

a95

a90

a80

a75_

a75

a75

*a80

376

1,340

3,070 

1,730

990

793

1,020

740

624

894

*826

14,515

501

28, 790

Mar.

570

445

438

506

498

408

306

267

235

215

188

171

*155

136

164

194

194

166

133

109

93 

87

75

64

66

93

69

62

56

34

95

6,322

204

12,540

Apr.

~SS 78

59

52

49

46

44

42

40

40

42

40

38

36

36

34

34

31

30

30

31 

33

31

31

34

31

*27

26

24

23

1,158

38.6

2,300

May

21

20

33

~54 159

72

56

49

46

*52

49

42

38

3J6

34

33

33

31

31

30

28 

28

27

27

26

26

26

24

24

23

23

1,211

39.1

2,400

June

23

22

22

22

21

21

20

20

20

19

19

18

18

20

20

19

19

20

*26

25

18 

17

17

16

16

15

14

14

14

14

564

18.8

1,120

July

14" 14

14

14

13

12

12

12

11

11

11

11

11

11

11

9.3

9.3

*8.6

9.3

9.3

8.6 

7.9.

7.9

lil

7.3

7.3

7.3

7.9

7.9

7.3

311.8

10.1

618

Aug.

773" 7.3

7.3

6.7

7.3

6.7

6.2

6.2

5.8

5.8

5.4

5.4

5.8

6.2

6.2

5.8

5.4

5.0

4.3

4.3

4.7 

4.7

4.3

4.0

4.3

4.7

3.8

4.3

4.0

4.0

4.0

167.2

5.39

332

Sept.

3.8

3.5

3.5

3.3

4.7

4.0

4.0

4.0

5.0

5.8

5.8

5.4

*5.4

5.4

5.4

5.0

4.3

4.0

4.0

4.3

4.3 

3.5

3.3

3.5

3.3

4.0

3.8

3.5

3.5

3.5

126.8

4.23

252

Calendar year 1955: Max 4,940 Mln 3.2 Mean 167 Ac-ft 120,800

Water year 1955-56: Max 4,940 Mln 3.2 Mean 242 Ac-ft 176,000

, Peak discharge (base, 1.700 efs). Nov. 19 (2 p.m.) 2,220 cfs (7.65 ft); Dec. 6 (4 a.m.) 2,500 cfs 

(7.80ft); Dec. 19 (8 a.m.) 5,540 cfs (9.19 ft); Dec. 21 (11 p.m.) 9,600 cfs (10.60 ft); Dec. 26 

(7 a.m.) 3,780 cfs (8.53 ft); Jan. 4 (10 a.m.) 3,170 cfa (8.28 ft); Jan. 6 (9 p.m.) 5,000 cfs (9.00 

ft); Jan. 12 (9 p.m.) 2,860 cfs (8.15 ft); Jan. 15 (5 a.m.) 6,860 cfs (9.70 ft); Jan. 22 (6:30 p.m.) 

2,390 cfs (7.95 ft); Feb. 21 (7 a.m.) 6,040 cfs (9.40 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

Mattole River near Petrolia.
EEL RIVER BASIN 527

Lake Plllsbury near Potter Valley, Calif.

Location. Lat 39°24'30", long 122°57'30", on line between sees. 14 and 23, T. 18 N., R.

 10 W., at Scott Dam near right bank of Eel River, 0.3 mile downstream from Rice Pork 

and 10.2 miles northeast of town of Potter Valley.

Drainage area. 288 sq ml.

Records available.--October 1922 to September 1928 (dally gage heights only; also summary

 or yearly contents In WSP 881), October 1928 to September 1956. Prior to October 1953, 

published as "at Hullvllle."

Gage. Water-stage recorder. Datum of gage Is at mean sea level (levels by Pacific Gas &

 Electric Co.). Prior to Jan. 26, 1950, staff gage at same site and datum.

Extremes. Maximum contents during year, 90,300 acre-ft May 24-29, June 2-4 (elevation,

 I79TTH.5 ft); minimum observed, 17,700 acre-ft Nov. 20 (elevation, 1,861.7 ft).

1922-56: Maximum contents, 95,600 acre-ft May 13, 16, 1925 (elevation, 1,910.8 ft); 

minimum, 10 acre-ft Dec. 9, 10, 1931 (elevation, 1,822.5 ft).

Remarks.--Reservoir Is formed by concrete overflow-type dam; storage began in December

 T92T. Capacity 93,700 acre-ft betwee'n elevations 1,822.4 ft (sill of outlet gate) and 

1,910.0 ft (top of spillway gates) above mean sea level. Water Is released down Eel 

River to Van Arsdale Reservoir, from which it is diverted through tunnel to Potter 

Valley powerhouse; part is then used for irrigation and remainder flows Into East Pork 

Russian River. Records show contents available for release. Recorder records show 

contents at 12 p.m.; occasional wire-weight-gage readings, made during periods when 

recorder was inoperative, show contents at various hours.

Cooperation. Elevation record furnished by Pacific Gas & Electric Co. in connection with 

a Federal Power Commission project.

Capacity table, water year 1955-56 (elevation, In feet, 

and contents, In acre-feet)

1,861.0

1,870.0

1,880.0

17,100

26,000

38,200

1,890.0

1,900.0

1,910.0

53,600

72,000

93,700

Contents, In aore-ft, at 12 p.m., water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

(*)

Oct.

g40,200

~

g38, 400

-

-

-

-

-

-

-

-

g34, 100

-

.

g32,600

-

-

-

_

-

-

g29,200

g28, 800

g28,300

-

-

g26,700

g26,000

1,870.0

-14,700

Nov.

-

g24,100

 -

g22,800

-

-

-

-

-

g!9,800

-

-

-

g!8,200

g!7,800

-

-

g!7,700

g!8,800

g!9,100

g!9,000

-

-

_

g!9,000

g!9, 100

g!9,100

__ ' ___

1,863.0

-7,100

Dec.

g!9,000 

g!9,200

_

-

_

-

-

-

-

-

-

-

g35,400

g35,400

g35, 500

-

-

-

76,900

88, 200

85,100

80,700

77,200

76,300

77,400

75,900

75,100

74,500

74,300

73,900

1,900.9

+55,000

Jan.

73,900 

73,700

75,500 

75,900

75,900

75,700

79,000

76,900

75,900

77,600

76,500

75,700

76,500

80, 100

81,200

77,800

76,300

75,700

75,300

75,500

75,100

75,700

75,500

75,100

75,300

75,900

75,300

74,900

74,500

74,300

74,100

1,901.0

4200

Feb.

73,700 

73,700

73,700 

73,500

73,500

73, 500

73,300

73,300

73,300

73,300

73,300

73,300

73,100

73,100

73,100

72,900

72,900

72,900

73,500

80, 100

85.800

81,800

78,000

76,100

75,700

74,900

74,700

74,700

74,500

___

1,901.2

+400

Mar.

74,300 

74,100

74, 100 

74,300

74,100

73,900

73,700

73,700

73,700

73,700

73,700

73,500

73,500

73,500

73,500

73,500

73,500

73,500

73,500

73,500

73, 500

73,500

73,300

73,300

73,300

73,300

-

.

73,300

73,100 

73, 100

1,900.5

L- 1,400

Apr.

73,100 

73,100

72.900 

73,100

73,500

73,900

74,500

75,100

75,700

76,500

77,200

77,600

78,000

78,400

78,600

79,000

79,500

79,900

80, 300

81,000

81, 600

82, 200

82,900

83,600

84,000

84, 600

84,900

85, 100

85, 500

._ ' __

1,906.4

+12,400

May

85. 800 

86,ObO

86,200 

86, 600

87,300

87,500

87,300

87,300

87,300

87,300

87,500

87,800

88,000

88,000

88,200

88,400

88,700

88,900

89,300

89,600

89,800

90,000

90,000

90.500

90,300

90,300

90, 300

90,300

90,300

90,000 

90,000

1,908.4

+4,500

June

90,000 

90.500

90)300 

90, 300

90, 000

90, 000

89,800

89,800

89,800

89,800

89,800

89,800

89,800

89,600

89,600

89,600

89,300

89, 100

88,900

88,700

88,400

88, 200

88,000

87,500

87,300

87,100

86,900

86, 400

86,200

. 85 _'-- 800

1,906.5

-4,200

July

85. 500 

85, 100

84, 600 

84, 200

83, 800

83,600

83,100

82,700

82,200

82,000

81,400

81,200

80,700

80,300

79,900

79,500

79,000

78,600

78,200

77,800

77,400

76,900

76,500

76,100

75,700

75,300

74,700

74,300

73,700

73,300

72.900

1,900.4

-12,900

Aug.

72,000 

g71,800

_

-

-

-

-

-

g68, 100

.

-

-

-

-

.

g64,700

-

-

-

_

-

g61,900

-

-

_

-

-

g58, 800

a57.800

_

-15,100

Sept.

:

_

-

-

.

-

-

-

g52, 100

-

-

-

-

.

-

g48, 800

-

-

_

-

-

g45, 800

-

.

-

-

-

a43,600

.

-14, 200

Calendar year 1955.................... * +30,100

Water year 1955-56.................... * +2,900

t Elevation, In feet, at end of month.

* Change In contents In acre-feet.

a No elevation record; contents Interpolated.

g Computed from wire-weight-gage reading.
528 EEL RIVER BASIN

Eel River below Scott Dam, near Potter Valley, Calif.

Location. Lat 39°24'30", long 122°58il5", in SE£ sec. 15, T. 18 N., R. 10 W., on left bank 

u.4 mile upstream from Soda Creek, 0.7 mile downstream from Scott Dam, and 9.7 miles 

northeast of town of Potter Valley.

Drainage area. 290 sq mi.

Records available.--November 1922 to September 1956. Prior to October 1929, published as 

South Eel River at Hullville, Calif., and October 1929 to September 1953 as "at Hullville."

Gage.--Water-stage recorder. Altitude of gage is 1,740 ft (from topographic map). Prior 

to Dec. 15, 1930, at datum 3.00 ft higher.

Average discharge.--33 years (1923-56), 507 cfs (367,100 acre-ft per year).

Extremes. Maximum discharge during year, 40,000 cfs Dec. 22 (gage height, 21.85 ft, from 

floodmarks), from rating curve extended above 8,100 cfs on basis of computed flow over 

Scott Dam; minimum daily, 83 cfs Dec. 7.

1922-56: Maximum discharge, 41,100 cfs (revised) Dec. 11, 1937 (gage height, 22.9ft, 

from floodmarks), from rating curve extended above 2,900 cfs on basis of computed flow 

over Scott Dam; minimum daily, 0.1 cfs Sept. 8, 1924.

Revisions. The maximum discharge for the water year 1938 has been revised to 41,100 

cfs Dec. 11, 1937 (gage height, 22.9 ft, from floodmarks), superseding figure published 

in WSP 843 and 861.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by Lake Pillsbury (see preceding page). No diversion above station.

Cooperation. Water-stage-recorder graph and seven discharge measurements furnished by 

Pacific Gas & Electric Co. in connection with a Federal Power Commission project.

Revisions. WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height,. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

3.0 

3.5 

4.0 

4.5 

5.0

78

152

242

370

545

6.0

8.0

10.0

14.0

1,070

2,830

5,200

12,400

3.5 

4.0 

5.0 

6.0 

8.0

160

254

525

990

2,740

10.0 5,150

12.0 8,380

16.0 17,400

20.0 31,900

Discharge, In cubic feet per secpnd, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

236

236

236

234

242

244

244

244

242

242

242

240

240

240

238

238

240

255

255

255

253

251

251

271

247

233

*232

238

236

228 A A A 244

7,527

243

14,930

Nov.

234

244

244

244

244

246

249

246

246

244

244

246

349" 251

246

206

177

191

190

167

117

150 

136

174

174

174

137

114

126

116

6,026

201

11,950

Dec.

120

167

166

166

174

172

83

117

118

118

118

118

118

161

202

192

174

195

3,580

*8,940

10,600

*29,400 

18, 800

8,180

4,830

5,450

4,810

3,340

2,390

1,820

1,480

106,299

3,429

210,800

Jan.

1,420

1,280

1.100

2,080

3,800

3,180

6,320

5,690

3,850

*5,320

5,560

4,040

4,290

9,790

13,300

9,380

5,190

3,930

3,170

3,260

3,070

2,980 

3,680

3,060

3,000

3,650

3,490

2,820

2,300

1,960

1,690

127,650

4,118

253,200

Feb.

1,470

1,300

1,160

1,100

1,050

978

912

865

805

770

738

720

702

676

640

592

576

550

552

5,560

17,300

19.200 

9,790

5,240

3,810

2,960

2,380

2,170

2,160

_ _ _ _ . _

86,826

2,994

172,200

Mar.

1.900

1,750

1,690

1,680

1,710

1,480

1,300

1,220

1,180

1,130

1,100

1,020

984

*978

948

918

918

948

990

990

972

942 

918

918

930

912

830

766

730

750" 720

34,192

1,103

67,820

Apr.

1>2~0~ 676

568

439

329

315

285

287

287

287

287

287

287

287

287

289

285

280 *25o~

280

283

280 

283

287

287

294

298

298

298

298

9,848

328

19,530

May

351

a350

a350

a435

484

704

774

608

580

568

417

317

320

317

310

298

289

283

280

280

289

a290 

289

289

289

291

291

274

263

265

261

11,406

368

22,620

June

a22o

187

187

a220

a235

a235

a230

a!80

165 T6~5

167

167

165

173

178

178

178

236

261

alSO"

a250

a250 

a250

a250

a250

a250

a250

254

256

258

6,495

216

12,880

July

258

*256"

256

254

254

250

248

246

244

242

240

238

244

248

246

244

242

242

240

238

236

236 

234

231

234

234

242

250

248

248

246

7,572

244

15,020

Aug.

246

244

244

244

244

244

244

242

242

242

242

242

242

242

242

242

242

240

240

258

238

238 

242

244

244

244

244

244

246

246

246

7,524

243

14,920

Sept.

546" 246

246

246

246

246

246

246

246

246

250

252

252

*250

250

248

248

252

254

254

254

252 

252

250

250

250

250

248

248

248

7,472

249

14,820

Calendar year 1955: Max 29,400 Mln 37 Mean 513 Ac-ft 371,100

Water year 1955-56: Max 29,400 Mln 83 Mean 1,144 Ac-ft 830,700

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of record of valve openings In Scott Da 

furnished by Paclfln Gas & Electric Co.
EEL RIVER BASIN 529

Potter Valley powerhouse tailrace near Potter Valley, Calif.

Location. Lat 39°21'35", long 123°07'35", in NW£ sec. 6, T. 17 N., R. 11 W., on right 

bank 100 ft downstream from powerhouse of Pacific Gas & Electric Co. and 3 miles northwest of town of Potter Valley.

Records available. October 1922 to September 1956.

Gage. Water-stage recorder and concrete Parshall flume. Altitude of gage is 1,000 ft 

(from topographic map). Prior to Apr. 13, 1950, water-stage recorder at site 50 ft upstream at different datum.

Average discharge. 34 years, 202 cfs (146,200 acre-ft per year).

Extremes. 1922-56: Maximum daily discharge, 348 cfs Apr. 24, 1953; no flow at times in 

several years.

Remarks. Records good. Water is diverted from Van Arsdale Reservoir on Eel River through 

tunnel to Potter Valley powerhouse, after which part is used for irrigation in Potter 

Valley and remainder flows into East Fork Russian River. Records given herein include 

diversions above station for irrigation.

Cooperation. Water-stage recorder graph, seven discharge measurements, and records of 

diversions furnished by Pacific Gas & Electric Co. in connection with a Federal Power 

Commission project.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

23

24

25

26

27

28

29

Wft ou

31

Total

Moan

Ac-ft

Oct.

Z35

Z35

Z35

Z33

231

250

Z31

Z32 

Z32

Z38

Z32

Z34

Z34

Z34

Z34

234

Z36

Z40

238

240

24Z 

Z40

241

"239 Z44

Z37

*Z37

Z37

Z38

237

Z38

7,318

Z36

14,5ZO

Nov.

Z37

237

Z35

Z37

238

Z41

I42~ Z4Z

240

Z41

Z42

Z31

Z33

Z3Z

Z30

Z26

151

196

Z17

Z35

156 

*188

203

ZZ3

a!90

a!90

a!95

a!40

a!51

a!28

6,347

21Z

1Z.590

Dec.

a!47

aZ24

173

176

208

Z42

188

2Z8 

Z4Z

233

19Z

165

166

165

2Z3

237

237

234

175

139

197 

19

5.3

"279 1.2

3.8

3.8

2.6

1.5

l.Z

1.2

4,239.5

137

8,410

Jan.

S3.

Z34

Z34

Z34

Z34

Z34

Z34

234 

Z33

Z33

Z34

Z33

Z34

Z34

Z36

Z37

31Z

318

318

318

318 

318

318

317

317

317

316

318

318

320

318

8,363

Z70

16,590

Feb.

318

318

318

317

318

318

317

317 

3ZO

3ZZ

3ZO

314

3ZO

3ZO

318

*317

317

317

317

316

209

1*5

12

178

317

317

317

317

317

8,344.5

zee

16,550

Mar.

317

316

317

317

317

317

317

316 

316

3ZO

323

3Z3

3ZZ

3Z3

*32Z

3Z3

3Z4

3Z9

330

332

332 

3Z9

324

324

32Z

316

317

314

311

314

314

9,942

321

19,720

Apr.

318

3ZO

3ZZ

3Z2

321

3Z3

3Z3

3Z3 

323

323

3Z3

3Z3

323

3Z3

3Z3

3Z3

3Z2

3ZZ

321

*3ZO

Iff

321

318

306

3Z1

319

315

319

318

9,603

320

19,050

May

318

3ZO

320

317

317

318

318

318 

318

318

3ZO

320

3ZO

320

3ZO

3Z2

3ZZ

3Z3

3Z3

283

330 

330

3Z8

329

330

338

331

319

274

249

281

9,794

316

19 , 430

June

Z59

195

194

233

Z46

245

Z45

Z03

151

148

150

15Z

153

154

153

153

201

236

Z36

239 

233

236

Z3Z

229

ZZ7

Z33

Z39

Z36

226

6,181

Z06

1Z,Z60

July

ZZ6

233

*Z34

Z30

233

ZZ9

Z37

233 

Z42

238

Z38

Z38

Z41

ZZ7

221

Z40

Z4Z

239

236

Z39

240

231

256

244

25Z

Z55

Z53

236

230

243

Z49

7,385

238

14,650

Aug.

251

250

249

242

Z31

247

252

249

251

251

233

237

252

251

253

249

251

224

255

256

255 

257

257

256

252

240

255

260

260

256

253

7,735

250

15,340

Sept.

252

252

254

254

253

250

251

fi259

262

261

*261

259

261

261

262

2g4

262

262

264

261

261

262

262

261

259

261

261

261

7,731

258

15,330

Calendar year 1955: Max 342 Min l.Z Mean Z30 Ac-ft 166,500

Water year 1955-56: Max 338 Min l.Z Mean Z54 Ac-ft 184,400

* Discharge measurement made on this day.

a No gage-height record; discharge estimated from power output of Potter valley powerhouse, 

furnished by Pacific Gas & Electric Co.
530 EEL RIVER BASIN

discharge. 33 years (1988-86, 1987-56), 583 cfs (488,100 acre-ft), combined flow 

il River at Van Arsdale Dam and Potter Valley powerhouse tailrace.

Eel River at Van Arsdale Dam, near Potter Valley, Calif.

> .--Lat 39°83'85", long 183°06'55", in fflj£ sec. 30, T. 18 N., R. 11 W., on left 

500 ft downstream from Van Arsdale Dam and 5 miles north of town of Potter Valley.

Drainage are a. 34 7 sq mi.

Records available. November 1909 to September 1922 (combined monthly discharge only, of 

Eel River at this station and Snow Mountain Water & Power Co.'s tailrace near Potter 

Valley), October 1988 to September 1956. Prior to October 1929, published as South 

Eel River at Van Arsdale Dam, near Potter Valley.

Sage. Water-stage recorder. Altitude of gage is 1,400 ft (from topographic map). Nov. 18, 

1909, to Mar. 3, 1987, recorder in reservoir 800 ft upstream from Van Arsdale Dam, at 

different datum. Oct. 1, 1987, to Feb. 28, 1937, staff gage at present site and datum.

Average 

of Ee

Extremes.--Maximum discharge during year, 48,600 cfs Dec. 82 (gage height, 31.4.ft, from 

rToodmarks), from rating curve extended above 11,000 cfs on basis of computed flow over 

Van Arsdale Dam; minimum daily, 0.6 cfs Nov. 2.

1909-56: Maximum discharge, that of Dec. 88, 1955; no flow Nov. 1, 1945, Sept. 13, 

14, 1953.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by Lake Pillsbury (see p.587 ). Plow is diverted from Van Arsdale 

Reservoir through tunnel to Potter Valley powerhouse (see preceding^ page), after 

which part is used for irrigation and remainder flows into East Pork Russian River. 

Records given herein show only flow passing dam down Eel River.

£SODeratlpji.--Water-stage-recorder graph and 18 discharge measurements furnished by 

Pacific Gas & Electric Co. In connection with a Federal Power Commission project.

Revisions (water years). WSP 1395: 1983(M), 1938.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

5.1

5.2

5.3

5.4 

5.6 

5.8 

6.0 

6.2

0.6

2.0

3.4

6.0

15

34

62

104

6.5

7.0

7.5

8.0

11.0

14.0

26.0

195

430

760

1,170

4,050

8,100

35,400

5.3 1.4

5.4 2.6

5.5 5.5

5.6 

5.8 

6.0

Hote. Same as preceding 

table above 6.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1.4

1.3

1.3

1.1

1.1

1.1

1.1

1.1

1.1

1.3

I'l

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.3

1.4

1.4

1.4

1.3

1.8

2.0

*T78

1.6

1.3

.7

Q

38.1

1.23

76

Nov.

2.1

.6

2 .8

2.8

2.8

2.8

2.8

2.8

2.7

2.6

2.4

2.2

2.8

4.4

3.7

3.0

1.8

3.4

3.0

52

63

TI 

4.0

2.8i

2.7

2.7

2.8

2.0

2.8

3 6

204.9

6.83

406

Dec.

59

5.0

177*575

890

87

19

86

6.8

3.3

5.2

5.2

4.2

5.2

32

184

1,040

*5,650

*10,900

*11,800

35.000 

21,000

9,050

5,650

*6,200

5,500

3,750

2,700

2,100

1,700

123,615. E

3,988

245,200

Jan.

' 1,430

1,150

980

2,100

4,000

3,200

6,300

5,800

3,900

*5,200

5,500

4,000

4,200

10,300

14.200

10,000

5,300

3,810

2,950

3,050

2,830

2,720 

3,500

2,830

2,830

3,580

3,430

2,660

2,090

1,700

1,430

126,970

4,096

251,800

Feb.

1,190

1,020

904

848

800

732

676

641

600

550

520

496

472

448

380

340

*330

320

400

5,700

18,800

*21.000 

10,500

5,460

3,740

2,870

2,250

2,020

2,100

86,107

2,969

170,800

Mar.

1.760

1,630

1,520

1,510

1,300

1,320

1,130

1,030

950

910

856

792

746

 725

690

669

662

669

704

711

683

655 

627

613

620

613

550

490

454

448

26,485

854

52,530

Apr.

412

355

310

231

80

80

38

39

36

38

39

34

32

32

31

30

18

8.2

*6.0

6.0

16

9.4

5.5

4.6

21

22

24

22

22

21

2,022.7

67.4

4,010

May

54

97

107

161

226

423

532.

335

320

305

212

76

69

64

53

38

25

13

4.2

40

2.6 i'.e

6.0

5.0

3.9

2.8

3.4

4.2

13 6 2

3,215.1

104

6,380

June

3.9

3.2

3.2

3.0

3.0

3.0

3.0

3.2

3.2

2.8

2.6

2.6

2.8

3.0

3.2

3.2

3.2

3.2

3.2

3.2 

3.0

3.0

2.6

2.8

3.9

1=1

3.9

3*6

94.2

3.14

187

July

3.6

*3.6

3.6

3.4

3.2

3.2

3.2

3.2

3.2

3.2

3.0

3.0

2.8

3.0

3.2

3.4

3.6

3.6

3.6

3.6

3.6

3.6 

3.6

3.6

3.4

3.2

2.6

2.6

3.4

 t Q

103.6

3.34

205

Aug.

3.9

3.9

3.9

3.6

3.9

4.2

4.2

4.2

4.2

4.6

4.6

4.6

4.6

4.2

4.2

4.6

4.6

4.6

4.6

4.2 

3.9

3.6

3.6

3.6

3.6

3.6

3.4

3*.4

126.7

4.09

251

Sept.

3.4

3.4

3.4

3.4

3.2

3.2

3.0

2.8

2.6

2.5

2.5

2.3

2.2

*2.1

2.1

2.0

1.6

1.6

1.6

1.6

1.6

1.6 

1.7

1.8

1.8

1.8

1.8

1.8

1.7

ijuj

67.6

2.25

134

Calendar year 1955 : Max 35,000 Mln 0.6 Mean 378 Ac-ft 273,600

Water year!955-56 : Max 35,000 Mln 0.6 Mean 1,008 Ac-ft 732,000

* Discharge measurement made on this day.

Note. No gage-height record Dec. 22 to Jan. 10, Jan. 12, 13, Feb. 9, 10, 15-23, Mar. 2-10} 

discharge estimated on basis of records for stations below Scott Dan and above Dos Rlos.
EEL RIVER BASIN 531

Eel River above Dos Rios, Calif.

Location. Lat 39°41'20", long 123°21'30", in SWs sec. 7, T. 21 N., R. 13 W., on left bank 

1.8 miles upstream from Middle Fork and 2.1 miles south of Dos Rios.

Drainage area. 703 sq mi.

Records available. December 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 950 ft (from topographic map).

Average discharge. 5 years (1951-56), 1,667 cfs (1,207,000 acre-ft per year).

Extremes. Maximum discharge during year, 123,000 cfs Dec. 22 (gage height, 45.4 ft, from 

rioodmarks), from rating curve extended above 27,000 cfs on basis of slope-area determination of peak flow; minimum, 3.0 cfs Sept. 27.

1950-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, 0.8 cfs Sept. 11, 

1955.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Plow regulated by Lake Pillsbury (see p. 527) and by diversion through Potter Valley 

powerhouse (see p. 529).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. ZZ Dee. 23 to Sept. 3O

Z.3 

2.5 

Z.7 

3.0 

3.5 

4.O 

4.5 

5.0

Z.8 

7.2 

14 

33 

92 

173 

285 

455

6.0 

8.O 

11.0 

14.0 

18.0 

24.0 

39.0

905

2,280

5,260

9,8OO

18,000

34,800

94,300

2.4 

2.6 

2.9 

3.4 

4.0 

4.5

3.0

10

27

67 

14Z 

240

5.0

6.O

7.0

9.0

11.0

14.0

375 

760 

1,340 

Z,920 

5,OOO 

9,800

Note. Same as preceding 

table above 14 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

2Z

23

24

Z5

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.6

3^8 

4.2

4.4

4.4

4.4

4.4

4.8

8.Z

11

11

12

TTJ

8.8

7.8

7.0

6.5

6.5

6.7

7.5

7.8

8.2

8.5

8.2

8.5

8.5

9.1

9.1

8.8

8.5

226.2

7.30

449

Nov.

8.Z 

*8.2

7.8 

872

9.4

11

11

1Z

12

12

11

9.8

16

41

41

38

50

93

381

Z,360

1,860

536

1,600

1,280

487

303

224

175

146

123

------

9,874.6

329

19,590

Dec.

723 

855

467 

303

1,170"

12,000

3,330

1,800

2,7OO

1,300

8OO

*593

467

373

330

1,100

3,07O

11,300

26,100

22,800

3O,7OO

«9g,ooo

45,OOO

17,OOO

14,000

13, OOO

11,OOO

7,000

5,2OO

4,200

3,300

332,681

10,730

659,900

Jan.

3,6OO 

3,000

1,900 

5,000

8,600

6,000

17,500

13.OOO

9,650

11.2OO

12,OOO

8,340

8,850

28,800

59.500

25,900

13,500

9,730

7,460

8,680

7,780

7,540

9,760

7,510

8,93O

11,000

11,000

7.96O

5,640

4,440

3,720

327,490

10,560

649,600

Feb.

3,1OO 

2,680

2,370 

2,170

2,030

1,860

1,750

1,620

1,500

1,380

1,300

1,240

1,190

1,120

1,050

962

909

898

2,T5oB"

20,000

SO.OOO

45,000

30,000

13,000

11,000

8,6OO

6,400

5,200

5,6OO

- ..-._

------

225,929

7,791

448,100

Mar.

6. OOO 

3,500

3,100 

3,200

3,90O

3,500

2,700

2,5OO

2,300

2,100

2,000

1.8OO

1,700

1,650

1.6OO

1,550

1,490

1,470

1,460

1,460

1,420

1,350

1,280

1,230

1,220

1,240

1,140

1.O3O

944

'558 898

61,670

1,989

122,300

Apr.

904 

855

710 

634

502

375

349

290

200

240

350

, 500

35O

233

225

218

2O7

186

167

158

153

156

152

144

14T

171

194

178

155

148

9,196

307

18,240

May

140 

156

211 

*326

519

674

1.210

 740

624

572

596

352

254

227

170

13O

120

130

ISO

200

*140

113

100

98

96

90

86

81

77

7579"

8,536

275

16,930

June

88 

8T

74 

71

69

67

64

63

*6O

56

54

54

53

52

51

50

49

48

52

53

51

47

43

40

38

37

35

33

30" 30

------

1,593

53.1

3,160

July

28 

2T

26 

26

26

25

24

24

22

20

19

*18

18

18

17

16

16

16

15

14

13

12

10

10

9.7

9.3

8.9

8.5

8.1

7.7

7.5

519.5

16.8

1,030

Aug.

6.5 

6.2

7.3 

8.1

8.5

8.1

8.1

8.5

8.1

8.1

8.1

7.7

6.9

6.5

6.9

*7.3

7.3

7.3

6.9

7.3

7.3

7.3

6.9

6.9

6.9

5.4

57T

5.4

5.4

5.4

5.4

217.4

7.01

431

Sept.

5.8 

5.8

5.4 

5.4

5.1

4.8

4.8

4.8

5.1

4.4

4.8

5.1

5.1

5.1

5.4

5.4

5.1

4.8

5.1

4.8

5.1

5.4

5.4

5.1

*4.8

4.4

3.7

3.4

377

3.7

------

146.8

4.89

291

Calendar year 1955: Max 9O,OOO Mln O.8 Mean 1,267 Ao-ft 917, OOO

Water year 1955-56: Max 9O,OOO Min 3.4 Mean 2,672 Ae-ft 1,94O,OOO

Peak discharge (base, 14.OOO efa).--Dee. 6 (5:3O a.m.) 19,500 efs (18.63 ft){ Dec. 19 (4 p.m.)

34,70O efs (23.97 ft)j Dec. 2Z (about 6 a.m.) 123,000 efs (45.4 ft)j Jan. 15 (Z p.m.) 47,5OO ofs

(Z7.63 ft).

Note. No gage-height record Dec. 22 to Jan. 8, Feb. 19 to Mar. 15, Apr. 8-13, May 15-ZOj discharge estimated on basis of records for atation below Doa Rioa and Middle Fork Eel River below

Black Butte River near Covelo.
532 EEL RIVER BASIN

Middle Fork Eel River below Black Butte River, near Covelo, Calif.

Location. La t 39°49'35", long 123°05'30", in Wir sec. 28, T. 23 N., R. 11 W., on right 

bank 0.2 mile downstream from Black Butte River and 8.6 miles east of Covelo.

Drainage area. 367 sq mi.

Records available. August 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,430 ft (from river-profile map).

Average discharge. --5 .years, 1,241 c'fs (898,400 acre-ft per year).

Extremes . Maximum discharge during year, 89,100 cfs Dec. 21 (gage height, 25.0 ft, from 

f loodmarks ) , from rating curve extended above 19,000 cfs on basis of slope-area determination of peak flow; minimum, 6.5 cfs Oct. 2, 3.

1951-56: Maximum discharge, that of Dec. 21, 1955; minimum, 4.4 cfs Sept. 22-26, 

1951.

Remarks. --Records good except those for periods of no gage-height record, which are fair. 

Ho regulation or diversion.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

6.8

675

6.8

.0

.0

.2

.2

.0

6.8

10

Jl

T2

11

10

10

9.9

9.6

9.6

9.9

11

11

12

11

11

11

12

12

12

12

13

12

307.6

9.92

610

Nov.

12

12

*12

13

16

18

18

17

16

15

14

13

18

24

20

25

31

114

1,380

5.890

1,410

576

496

384

307

532

695

627

508

412

11,625

388

23,060

Dec.

717

544

422

346

953

7,260

2,070

1,560

2,600

1,440

1,620

1,460

*1,110

930

858

1,550

2,550

7,960

27,800

*14,600

*28,600

62.000

30,000

15,000

5,500

6,000

4,600

3,800

3,050

2,400

2,600

241,900

7,803

479,800

Jan.

2,800

2,600

3,000

3,500

3,700

3,500

4,430

3,480

3,060

*4,730

5,080

3,990

6,000

17,100

53.700

*12,700

6,440

5,940

4,930

5,340

4,900

7,020

8,220

5,180

4,390

4,200

3,760

3,160

2,800

2,300

1.950

183,900

. 5,932

364,800

Feb.

1,800

1,600

1,450

1,370

1,300

1,250

*1,240

1,220

1,080

1,090

1,090

1,130

1,100

1,030

970

920

900

880

1,500

4,800

18.500

15,700

7,230

4,390

3,600

3,050

2,650

2,720

2,800

88,160

3,040

174,900

Mar.

2,600

2,500

2,700

2,850

2.950

2,400

2,070

1,900

1,700

1,570

1,490

1,390

1,320

*1.300

1,330

1,490

1,700

1,980

2,220

2,180

2,030

1,850

1,980

2,180

2,320

2,150

1,600

1,440

1,550

1,700

1,500

59,940

1,934

118,900

Apr.

1,240

1,060

983

1,100

1,410

1,540

1,810

1,830

2,290

2,560

1,950

1,480

1,220

1,200

1,270

1,190

1,440

1,670

2,120

2,580

2,770

2,740

2.790

2,640

2,300

1,980

1,740

1,630

1,620

1,650

53,803

1,793

106,700

May

1,710

1,850

*2,090

3.540

2,810

2,560

2,200

1,800

1,690

1,680

1,560

1,360

1,240

1,220

1,360

1,630

1,830

1,960

2,060

1,900

1,750

1,810

1,740

1,530

1,430

1,370

1,240

1.110

1,120

1,180

1,120

53,450

1,724

106,000

June

975 898"

926

835

702

640

*622

640

652

646

587

542

521

511

475

417

390

386

441

382

344

320

309

287

273

259

249

237

212

196

14,874

496

29 , 500

July

182

165

151

140

134

127

121

115

107

99

94

*90

96

92

87

80

73

67

64

62

56

52

48

45

43

40

37

35

34

33

-32

2,599

83.8

5,160

Aug.

30

29

29

29

29

29

28

27

26

25

24

23

22

22

21

*20

19

18

18

18

17

16

16

16

15

15

15

15

15

14

T4

654

21.1

1,300

Sept.

li

14

13

12

12

12

11

12

12

12

12

12

12

12

12

12

12

12

13

14

14

13

12

12

12

*12

12

12

12

12

370

12.3

734

Calendar year 1955: Max 62,000 Mln 5.2 Mean 1,069 Ac-ft 773,900

Water year 1955-56: Max 62,000 Mln 6.8 Mean 1,944 Ac-ft 1,411,000

Peak discharge (base. 10.000 cfs). Dee. 6 (8 

(1

13,400 cfs (11.50 ft); Dec. 19 (2 p.m.)

m.) 48,000 cfs (18.15 ft)j 

55 ft).

a.m.) 13,400 cfs (11.50 ft); D 

cfs (25.0 ft); Jan. 15 (2 p.m.) 

. 21 (4 p.m.) 26,400 cfs (14.55

45,200 cfs (17.54 ft; ; Dec. 21 (12 p.m.) 89,100 

Jan. 22 (10:30 p.m.) 13,600 cfs (12.08 ft); Feb

* Discharge measurement made on this day.

Note. No gage-height record Dec. 22 to Jan. 6, Jan. 29 to Feb. 6, Feb. 15-19, Feb. 26 to Mar. 14; 

discharge estimated on basis of records for stations on Eel River above and below Dos Rlos.
EEL RIVER BASIN 533

Eel River below Dos Rios, Calif.

Location. Lat 39°44'15", long 123°22'15", in NE^- sec. 25, T. 22 N., R. 14 W., on left bank 

1.1 miles downstream from Burger Creek, 1.7 miles northwest of Dos Rios, and 2.2 miles 

downstream from Middle Pork.

Drainage area.--1,481 sq mi.

Records available.--November 1911 to December 1913, October 1951 to September 1956. Published as "at Two Rivers" 1911-13.

Gage. Water-stage recorder. Altitude of gage is 800 ft (from topographic map). Prior to 

Dec. 30, 1913, staff gage at bridge 500 ft downstream from Middle Pork at different 

datum.

Average discharge. 6 years (1912-13, 1951-56), 3,580 cfs (2,592,000 acre-ft per year).

Extremes.--Maximum discharge during year, 283,000 cfs Dec. 22 (gage height, 49.86 ft), from 

rating curve extended above 120,000 cfs on basis of a slope-conveyance study; minimum, 

14 cfs Oct. 1-9.

1911-13, 1951-56: Maximum discharge, that of Dec. 22, 1955; minimum, 5.2 cfs 

Sept. 13, 1955.

Revisions.--The figures of maximum discharge for some water years have been'revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

1245 

1285 

1345

Water 

year

1952 

1953 

1954

Date

Dec. 27, 

Jan. 9, 

Jan. 17,

1951 

1953 

1954

Discharge 

(cfs)

117,000 

123,000 

111,000

Gage height 

(feet)

31.4 

32.08 

30.60

Remarks.--Records good. Flow partly regulated by Lake Pillsbury (see p. 527) and by diversion through Potter Valley powerhouse (see p. 529).

Revisions.--Revised figures of discharge, in cubic feet per second, for high-water periods 

in the water years 1952-54, superseding those published in WSP 1245, 1285, and 1345, are 

given herewith:

1951 

Dec. 27.......... 106,000

28.......... 56,200

1952 

Feb. 1.......... 70,600

2.......... 70,400

1953 

Jan. 9.......... 103,000

10.......... 52,100

1954 

Jan. 16.......... 53,300

17.......... 69,500

Month Cfs -days

427,480

-

_

-

Maximum

106,000

70,600

103,000

69,500

Minimum

1,290

15

30

ptr

25

Mean

13,790

3,941

3,446

3,340

Runoff In 

aore-feet

847,900

2,861,000

2,495,000

2,418,000

Revised peak discharge. 

1952-53: Dec. 7 (3:30 

(23.21 ft).

-1951-52: Pet. 1 (9 p.m.) 106,000 ofs (29.95 ft).

.m.) 75,500 ofs (25.78 ft)j Jan. 18 (3:30 a.m.) 59,300 cfs

493801 O - 59 - 35
534 EEL RIVER BASIN 

Eel River below Dos Rios, Calif. Continusd

Rating tables, water year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 19 Dec. 19 to Sept. 30

4.9-

5.0

5.3

5.6

6.1

6.5

7.0

8.0

16

50

100

230

440

800

8.0

9.0

11.0

13.0

17.0

26.0

1,730

2,930

6,200

11,200

26,500

77,000

4.9

5.0

5.3

5.5

6.0

7.0

8.0

17

26

65

110

260

680

1,300

9.0

10.0

11.0

13.0

17.0

23.0

43.0

2,210

3,500

5,340

10,300

24,500

56,000

216,000

Discharge, In eublc feet per second, water year October 1955 to September 1956 

_I I I I I I I | I I

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

li

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

14

IT

14

14

14

14

14 

14

14

22

28

31

36

3T

30

26

25

24

24

24

26

28

28

30

30

30

30

31

32

««O£

31

758

24.5

1,500

Nov.

31

*30" 30

31

34

38

42 

44

44

43

39

36

50

86

94

90

102

264

1,620

7.590

5,240

1/610

2,780

2,280

1,020

896

1,020

920

744

594

27,442

915

54,430

Deo.

1,860

1,930

1,110

£§i 3,W5

25,000

6,970 

4,170

7,190

3,870

3,050

 2,850

2,220

1,840

1,610

3,260

6,810

25,400

»7 1,100

52,400

»69,500

216,000

116, 006

44,100

28,500

28,500

23,700

16,500

12,000

9,490

7,810

798,984

25,770

*I,585

Jan.

8,850

7,500

6.080

11,800

17,600

13,300

*33,100 

25,900

16,200

20,700

21,900

15,100

19,500

59,000

»89.900

53,900

26,000

19,100

15,000

16,600

15,200

16,000

22,200

15,500

16,900

19,500

19,300

13,900

10,100

8,120

6>780

660,530

21,310

*1,310

Feb.

5,740

4,960

4,500

4,230

3,980

3,710

 3,480 

3,320

3,130

2,970

2,860

2,800

2,770

2,640

2,460

2,230

2,190

2.090

9,050

36,200

93.200

89,666

46,300

23,200

19,400

14,700

11,000

10,900

11,400

418,410

14,430

829,900

Mar.

8,540

7,550

7,380

7,650

8.900

7,550

6,180 

5,580

5,240

4,820

4,490

4,110

3,920

3,900

»3,740

3,680

3,780

4,000

4,230

4,380

4,220

3,980

3,930

4,040

4,220

4,250

3,640

3,310

3.240

3,326

3,280

151,050

4,873

299,600

Apr.

3,020

2,680

2,460

2,420

2,540

2,560

2,770 

2,720

3,040

3,470

3,110

2,680

2,380

2,250

2,280

2.180

8,346

2,480

2,770

3,210

3,500

3,480

5.550

3] 460

3,140

2,850

3,610

2,370

2,280

2,250

82,850

2,762

164,300

May

2,290

2,440

2,670

 4,070

4,360

4,130

4.540 

3,426

2,970

2,980

3,020

2,420

2,070

1,930

1,960

2,190

2,430

2,510

2,720

2,640

2,360

2,340

2,330

2,080

1,900

1,810

1,690

1,460

1.420

1,436

1,480

78,090

2,519

154,900

June

1.330

1,266

1,200

1,140

984

894

834 

822

»822

822

755

700

665

640

620

565

518

498

540

530

474

438

422

398

370

346

326

309

292

270

19,724

657

39,120

July

250

ttS

216

204

195

183

171 

162

153

144

135

128

 132

135

125

118

112

105

98

92

90

83

75

69

64

60

58

56

53

52

50

3,796

122

7,530

Aug.

41T§

46

47

47

46

45 

44

44

42

41

38

37

56

37

»37

37

37

37

37

36

35

35

34

33

32

30

29

28

OQ CO

27

1,177

38.0

2,330

Sept.

26

Z3

£5

24

23

22

3?82

S3

24

84

24

25

25

25

25

25

24

25

25

25

25

25

24

23

#22

22

22

22

22

716

23.9

1,420

Calendar year 1955: Max 216,000 Hln 5.6 Mean 3,201 Ao-ft 2,318,000

Water year 1955-56: Max 216,000 Mln 14 Mean 6,130 Ac-ft 4,450,000

Peak discharge (base. 22.000 

ofs (29.95 ft); Dec. 22 (7 

Jan. 15 (3 p.m.) 118,000 c 

116,000 ofs (31.25 ft).

* Dlaoharge measurement made on this day.

* Expressed In thousands.

2.000 ofs). Dec. 6 (6 a.m.) 36,800 Ofs (19.15 ft) 5 

7 a.m.) 283,000 ofs (49.86 ft); Jan. 7 (8 p.m.) 41, 

ofs (31.54 ft); Jan. 23 (2 a.m.) 27,200 ofs (17.60

, Dec. 19 (5 p.m.) 106;000 

,100 ofs (20.48 ft); 

ft); Feb. 21 (6 p.m.)
EEL RIVER BASIN 535

North Pork Eel River near Mina, Calif.

Location.--Lat 39°56'15", long 123°20'45", in SWi sec. 8, T. 24 N., R. 13 W., on right 

 bank 1.2 miles upstream from Asbill Creek, 2 miles south of Mina, and 8.8 miles northeast of Nashmead.

Drainage area. 251 sq mi.

Records available. August 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,030 ft (from topographic map). Aug/27, 

T953, to Jan. 15, 1954, water-stage recorder and Jan. 16 to June 22, 1954, wire-weight 

gage read twice daily, at bridge 0.2 mile downstream at different datum.

Extremes. Maximum discharge during year, 58,400 cfs Dec. 22 (gage height, 24.00 ft), from 

rating curve extended above 6,600 cfs on basis of slope-area determination of peak flow; 

minimum, 1.6 cfs Sept. 26-30.

1953-56: Maximum discharge, that of Dec. 22, 1955; minimum, 1.2 cfs Sept. 9-12, 

1955.

Flood in December 1937 reached a stage of about 30.7 ft (former site and datum), 

from information by local resident.

Remarks. Records good.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In cubic 

feet per second)

Oct. 1 to Jan. 15 Jan. 16 to Hay 6 May 7 to Sept. 30

2.7

2.8

2.9

3.0 

3.2 

3.4 

3.7

1.7

2.5

4.2

6.8

14

23

44

5.0

6.0

7.0

8.0

10.0

13.0

15.0

225

525

970

1,600

3,400

7,110

11,100

221

465

930

1,580

3,400

Note. Same as

5.1 

6.0 

7.0 

8.0 

10.0

3.6

3.7

3.8 

4.0 

4.2 

4.5

0.6

2.2

4.2

9.0

18

40

4.9 

5.4 

6.0 

6.5 

7.0

85

175

360

590

890

4.0 74 is!o 21^000 preceding table

4.5 142 21.0 36,300 acove 10 m.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2.2

272

2.2 

2.2

2.2

2.2

2.2

2.2

2.2

2.7

3.6

4.2

3.4

3.2

4.2

3.8

3.4

3.0

3.0

5.0

6.0

8.0 

7.1

5.2

4.7

6.0

10

15

15

8.0 

6.5

145.8

4.70

289

NOV.

6.0

5.4

*5.2 

BTT

6.5

7.4

12

11

8.9

7.7

6.8

6.0

7.1

12

25

21

39

261

1,100

4.460

1,600

432 

628

597

371

380

320

243

193

154

10,931.4

364

21,680

Dec.

1,270

839

509 

329

1,720

5,990

1,570

1,100

1,940

945

734

565

*422

335

284

634

2,330

8,550

14,300

 6,710

18,000

*54,500 

127755

4,920

3,730

4,350

3,370

2,330

1,660

1,280 

1,050

138,766

4,476

275,200

Jan.

1,470

1,300

1.150 

2,88(5

*3,180

2,620

6,160

3,540

3,010

4,930

3,9OO

2,740

4,560

10,300

14,500

6,670

*3,710

3,260

2,450

2,720

2,320

3,580 

4,740

3,090

2,800

3,540

3,260

2,400

1,790

1,390 

1,140

115,080

3,712

228,300

Feb.

958

845

805 

*800

760

725

705

676

608

545

505

477

465

420

376

338

330

312

4,555

6,880

19.700

11,000 

6,140

3,290

2,660

1,890

1,570

1,680

1,740

------

71,200

2,455

141,200

Mar.

1,470

1,430

1,730 

1,900

1.970

1,490

1,300

1,230

1,190

1,O7O

958

850

810

 830

77O

745

765

810

820

740

666

617 

581

554

550

626

493

440

410

400

28,645

924

56,820

Apr.

359" 394

338 

325

328

322

325

318

325

*343

340

312

325

305

295

292

290

288

288

290

295

290 

285

281

276

269

267

246

235

250

9,076

303

18,000

Hay

226

221

230 

486

473

549

354" 686

261

243

306

220

185

167

155

145

141

133

125

117

114

109 

103

100

96

91

88

84

82 

onou 

77.

6,457

208

12,810

June

76

7T

68 

64

61

*58

56

54

52

50

48

46

44

43

44

43

41

40

47

48

41

38 

35

34

32

31

30

27

25

23

1,370

45.7

2,720

July

22

22

21 

20

19

18

18

17

16

14

14

*13

26

22

20

18

16

15

14

13

12

11

10

9.6

9.0

8.4

8.4

7.9

7 9 ill

474.8

15.3

942

Aug.

T7B" 7.6

7.6 

7.6

7.6

7.1

7.1

7.1

6.9

6.9

6.4

6.4

6.4

6.1

*5.9

5.6

5.4

5.2

5.2

5.2

5.0

4.8 

4.6

4.2

4.2

4.0

4.0

3.8

371

4.0 

3.8

177.1

5.71

351

Sept.

374" 3.4

3.2 

3.0

2.8

2.4

2.4

2.4

2.4

2.6

2.4

2.4

2.4

2.2

2.2

2.0

2.0

2.0

2.0

2.0

1.8

1.8 

1.8

1.8

1.8

 1.6 T78"

1.6

1.6

1 6

66.6

2.22

132

Calendar year 1955: Max 34,300 Min 1.2 Mean 614 Ao-ft 444,300

Water year 1955-56: Max 34,300 Mln 1.6 Mean 1,045 Ao-ft 758,400

Peak discharge (base. 8.000 cfs).--Dec. 6 (7 a.m.) 9,370 ofs (14.27 ft): Dec. 19 (2 p.m.) 22.000 

ofs (18.25 ft); Dec. 22 (3:30 a.m.) 58,400 ofs (24.00 ft); Jan. 7 (5 a.m.) 8,490 ofs (13.83 ft); 

Jan. 15 (1 p.m.) 20,800 ofs (17.94 ft); Feb. 21 (1 p.m.) 29,800 ofs (19.90 ft).

* Discharge measurement made on this day.
536 EEL RIVER BASIN

Eel River at Alderpoint, Calif.

Location.--Lat 40°10'35", long 123°36'20", in NW£ sec. 27, T. 3 S., R. 5 E., on left bank

at Alderpoint, 600 ft downstream from Carter Creek and 11.4 miles northeast of Garberville.

Drainage area. 2,079 sq mi.

Records available. September 1955 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 270 ft (from topographic map). 

Extremes.--1955: Maximum daily discharge during September, 27 cfs Sept. 23; minimum

daily, 13 cfs Sept. 12, 13.

1955-56: Maximum discharge during water year, 376,000 cfs Dec. 22 (gage height,

72.5 ft, from floodmarks), from rating curve extended above 110,000 cfs on basis of

slope-area determination of peak flow; minimum, 20 cfs Oct. 6-8. 

Remarks. Records good except those for periods of no gage-height record, which are fair.

Rating tables, Sept, 1, 1955, to Sept. 50, 1956 (gage height, In feet, 

and discharge, In cubic feet per second)

Sept. 1 to Dec. 22, 1955

1.7

1.8

1.9

2.0

2.1 

2.4 

2.7 

3.0

27

47

80

215

400

630

3.5

4.0

5.0

10.0

15.0

30.0

45.0

61.0

1,140

1,800

3,400

14,500

27,000

75,500

142,000

265,000

Dec. 23, 1955, to Sept. 30, 1956

1.7

1.9

2.0

26

45

72

102

168

282

3.0 

3.5 

4.0 

5.0 

9.0 

15.0

535

860

1,360

3,010

11,000

27,000

Note. Same as preceding 

table above 15.0 ft.

Discharge, In cubic feet per second, 1955

Day

Sept. 1

2

3

4

5

6

7

8

Runoff In

Discharge

15

15

15

15

15

15

15

14

acre-feet.

Day

Sept. 9

10

11

IE

13

14

15

16

Discharge

14

14

14

13

13

15

15

15

Day

Sept. 17

18

19

20

21

ZZ

23

24

Discharge

16

17

18

ZZ

E4

26

27

26

Day

Sept. 25

26

27

ZB

Z9

30

Discharge

Z5

24

24

24

23

E3

1,090

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

IE

13

14

15

16

17

18

19

20

El

22

23

24

25

26

27

E8

29 

30 

31

Total

Mean

Ac-ft

Oct.

22

E2

22 

22

2E

20

20

20

E2

27

27

29

*35

37

39

43

41

37

37

41

37

35

37

37

41

50

47

45

45 

50 

45

1,054

34.0

2,090

Nov.

45

43

43 

43

43

45

47

50

57

57

57

54

67

84

112

156

175

242

1,440

IE. 500

12,200

*3,500

*3,240

5,060

2,140

1,450

1,380

1,3EO

1,080 

880

47,610

1,587

94,430

Dec.

2.E80

4,370

2,370 

1.550

2,710

35,700

14,600

*6,710

10,700

6,880

4,460

3,980

3,030

E,400

2,040

2,930

8,960

33,300

*89,200

*74,000

71,100

*E60,000

150,000

60,000

37,000

37,000

31,000

E2,000

16,000 

12,000 

10,000

IP 18,2 70

32,850

*2,020

Jan.

10,600

10,600

8.570 

12,500

24,300

17,900

39,900

39,300

24,000

27,800

31,400

21,800

26,100

66,000

106,000

73,100

37,300

28,400

22,400

E2,300

22,200

20,500

33,800

24,300

23,300

28,500

31,900

23,600

16,300 

12 , 800 

11,200

898,670

28,990

*1,782

Feb.

9,500

8,340

7,640 

7,200

6,860

6,600

6,340

6,080

5,800

5,500

5,220

4,960

4,840

4,700

4,500

4,200

3,840

5,700

3,930

43 , 800

118,000

105,000

61,700

34,200

28,400

22,900

16,600

14,800

17,700

572,850

19,750

*1,136

Mar.

13,200

11,500

11,100 

11,500

15.400

11,800

9,960

9,040

8,5EO

7,960

7,420

6,840

6,380

6,260

6,160

5,980

5,840

5,820

5,960

6,240

5,940

5,700

5,480

5,480

5,580

5,840

5,280

4,700

4.460 

4,460 

4,580

228,380

7,367

453,000

Apr.

4.580

5,860

5,520 

5,5EO

3,400

3,400

5,560

5,620

5,780

4,260

4,E80

3,740

3,400

5,090

E,990

2,940

2,920

5,100

5,580

5,840

4,220

4,500

4,520

4,280

4,020

5,700

5,400

5,050

2,850 

2,760

107,640

5,588

E13,500

May

2,760

2,810

3,100 

4,520

6,000

5,100

5,980

5,000

4,080

3,900

4,080

3,540

2,880

2,600

2,490

2,650

2,900

3,030

3,E60

3,220

E,940

2,870

2,810

2,650

E.360

E.160

E,010

1,750

1,590 

1.560 

1,620

98,000

5,161

194,400

June

1.550

1,540

1,220 

1,240

1,110

976

908

868

855

860

846

797

755

*754

714

688

651

601

601

649

601

529

500

477

444

417

391

570

552 

...144

22,526

744

44,280

July

299

E86

E70 

254

242

EE7

219

212

200

186

175

168

161

168

168

161

151

144

134

128

115

108

102

96

90

84

78

75

72 

69 

11

4,909

158

9,740

Aug.

11

58

*58 

61

61

61

61

61

61

58

55

50

50

48

45

45

45

45

45

43

45

45

45

41

59

39

11

57

57 

57 

57

1,497

48.5

2,970

Sept.

56

54

52 

52

52

50

50

28

E8

28

28

28

28

28

*50

50

50

50

52

52

50

50

50

50

E8

28

28

28

28 

28

894

29.8

1,770

Calendar year 1955: Max - Mln - Mean - Ac-ft -

Water year 1955-56: Max 260,000 Mln 20 Mean 8,202 Ac-ft 5,954,000

Peak discharge (base. 26.000 cfs). Dec. 6 (12 m.) 49,600 cfs (22.55 ft); Dec. 19 (8:50 p.m.) 

128,000 cfs (42.60 ft); Dec. 22 (about 9 a.m.) 576,000 cfs (72.5 ft); Jan. 8 (1 a.m.) 50,800 cfs 

(22.95 ft); Jan. 15 (6:50 p.m.) 152,000 cfs (45.55 ft); Jan. 25 (8 a.m.) 58,400 cfs (18.80 ft); 

Jan. 27 (11 a.m.) 35,100 cfs (l7.04 ft); Feb. 21 (5 p.m.) 141,000 cfs (44.81 ft).

* Discharge measurement made on this day.

* Expressed In thousands.

Note. No gage-height record Sept. 1, Dec. 22-51; discharge estimated on basis of records for station below Dos Rlos and for North Pork Eel River near Mlna.
EEL RIVER BASIN 537

South Pork Eel River near Branscomb, Calif.

Location. Lat 39"43'09", long 123°39'06", In NW£ sec. 32, T. 22 N., R. 16 W., on right 

bank 0.4 mile upstream from Jack of Hearts Creek and 4.7 miles north of Branscomb.

Drainage area. 43.9 sq mi.

Records available. October 1946 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 1,380 ft (from topographic map).

Average discharge. 10 years, 173 cfs (125,200 acre-ft per year).

Extremes . Maximum discharge during year, 20,100 cfs Dec. 22 (gage height, 16.20 ft), from 

 rating curve extended above 4,600 cfs on basis of slope-area determination of peak flow; 

minimum, 2.8 cfs Sept. 24-30.

1946-56: Maximum discharge, that of Dec. 22, 1955; minimum, 1.4 cfs Sept. 24, 1949. 

Revisions. The figures of maximum discharge for some water years have been revised, 

as shown in the following table. They supersede figures published in the water-supply 

papers indicated.

WSP

1215 

1245 

1285 

1345

Water 

year

1951 

1952 

1953 

1954

Date

Jan. 21, 1951 

Dec. 27, 1951 

Dec. 7, 1952 

Jan. 17, 1954

Discharge 

(cfs)

8,740 

8,380 

7,160 

8,120

Gage height 

(feet)

11.1 

10.90 

10.18 

10.75

Remarks.--Records good. No regulation or diversion.

Revisions.--WSP 1395: Drainage area. Revised figures of discharge, in cubic feet per 

second, for high-water periods in the water years 1951-52, 1953 (peak discharges 

only), and 1954, superseding those published in WSP 1215, 1245, 1285, and 1345, are given 

herewith:

1954 

Jan. 16............ 5,110

Jan. 17............ 4,550

Month

Water year 1950-51. .....'.......

Calendar year 1951. ............

Water year 1951-52 .............

Calendar year 1954. ............

Cfs-days

-

-

Maximum

5,260

6,350

5,110

Minimum

1.7

2.2

4.1

Mean

S50

224

230

195

Runoff in 

acre-feet

162,000

167,200

140,900

Revised peak discharge. 1950-51; Jan. 21 (2:30 p.m.) 8,740 cfs (ll.l ft)j Feb. 4 

(12 m.) 7,020 cfs (10.1 ft).

1952-53: Dec. 7 (l a.m.) 7,160 cfs (10.18 ft)j Jan. 9 (5 a.m.) 5,54O cfs (9.14 ft); 

Jan. 18 (7:30 p.m.) 6,540 cfs (9.80 ft).
538 EEL RIVER BASIN 

South Fork Eel River near Branscomb, Calif. Continued

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dee. 22 Dec. 23 to Sept. 30

1.0

1.1

1.2

1.3

1.4 

1.6 

2.0

11

17

25

49

115

2.5 

3.0 

4.0 

5.0 

7.0 

9.0 

13.0

255

430

880

1,430

3,000

5,340

12,500

0.9

1.0

1.1 

1.3 

1.5

2.2

4.5

9.5

31

62

2.0 

2.5 

3.0 

4.0

166 

-285 

436 

880

Hote. Same as preceding 

table above 4.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

TotaJ

Mean

Ac-ft

Oct.

3.2 

.2

3.2

3.2

3.2

3.2

3^0.

3.0

3.0

15

12

6.8

5.5

4.7

4.1

4.1

4.1

4.1

4.7

6.8

6.3

5.5 

5.1

4.7

4.7

7.7

7.3

5.9

5.1

4.7

4.4

161.5

5.21

320

Nov.

4.-1 

*4.4

4.7

5.9

9.2

8.2

7.3

6.3

5.5

5.1

4.7

4.7

15

32

15

13

22

47

279

990

473

210 

365

273

177

130

95

80

68

59

3,413.1

11.4

6,770

Dec.

187 

158

130

103.

399

2,090

707

525

597

402

306

237

192

*158

150

336

793

1,910

3,380

2,000

*5,230

*11.400 

3,200

1,310

922

1,040

963

726

530

409

329

40,819

1,317

80,960

Jan.

376 

315

277 544"

637

575

1,620

1,280

*819

822

755

613

723

2,780

4.610

1,850

950

*708

538

708

690

896

1,120

805

785

800

865

721

542

422

343

29,489

951

58,490

Feb.

285 

*237

217

196

182

166

155

146

140

129

122

114

105

101

97

91

87

89

228

1,870

5.540

2,840 

1,700

927

1,240

900

631

582

_559

17,676

610

35,060

Mar.

461 

380

358

409

491

402

349

298

259

226

200

178

159

144

*133

124

120

112

103

97

89

83 

79

75

77

77

66

62

60

60

72

5,803

187

11,510

Apr.

62

55

54

48

47

45

44

42

41

41

42

39

44

41

39

38

37

34

32

31

31

30 

29

29

31

32

29

27

25

...!?

1,144

38.1

2,270

May

24 

24

27

72

77

68

57

52

47

47

47

42

39

58

34

32

31

31

30

29

27

26 

25

25

25

24

23

21

2T

21

21

1,107

35.7

2,200

June

20 

T9

19

19

18

17

17

16

*16

17

16

16

16

16

16

16

15

14

17

15

14

13 

12

11

11

10

9.5

9.5

S^a.

8.J

442.6

14.8

878

July

8.8

Sfts'

9.5

9.5

9.5

9.5

8.8

8.1

8.1

7.5

7.5

*7.5

8.1

8.1

7.5

7.5

7.5

7.0

6.5

6.5

6.5 

6.1

6.1

6.1

5.7

5.7

5.7

5.7

5.7

5,3

230.6

7.44

457

Aug.

e5.3

5.5

5.3

5.3

5.3

4.9

4.9

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

*4.1

4.1

4.1

4.1

4.1 

3.7

5.7

3.7

3.7

3.7

5-»4_

3.4

3.4

3.4

132.3

4.27

262

Sept.

3.4 

5.4

3.4

3.1

3.1

3.1

3.1

3.4

5,7

3.7

3.7

3.4

3.4

3.4

3.4

3.4

3.1

3.1

3.1

3.4

3.4

3.1 

3.1

2^8

2.8

2.8

*2.8

2.8

2.8

2.8

96.0

3.20

190

Calendar year 1955: Max 11.4001 Mln 2.4 Mean 182 Ac-ft 131,600

Water year 1955-56: Max 11,400 Mln 2.8 Mean 275 Ac-ft 199,400

Peak discharge (base. 2.000 cfs).--Dec.6 (4 a.m.) 3,830 cfs (7.80 ft); Dec. 19 (1:30 p.m.) 5,300 

cfs (8.97 ft)} Dec. 22 (2:30 a.m.) 20,100 cfs (16.20 ft)j Jan. 7 (6 p.m.) 2,020 cfs (5.81 ft)j 

Jan. 15 (12:30 p.m.) 7,620 cfs (10.45 ft); Feb. 21 (1:30 p.m.) 5,210 cfs (8.91 ft).

* Discharge measurement made on this day.
EEL RIVER BASIN 539

South Fork Eel River near Miranda, Calif.

Location. Lat 40*10'55", long 123e 46'30", in NWfc sec. 30, T. 3 S., R. 4 E., on right bank

 at Sylvandale Campgrounds on U. S. Highway 101, 0.5 mile upstream from Rooky Glen Creek, 

4.3 miles southeast of Miranda, and 20 miles upstream from mouth.

Drainage area. 537 sq mi.

Records available. May 1940 to September 1956.

Page. Water-stage recorder. Altitude of gage is 250 ft (from topographic map). Prior to

 NOV. 2, 1940, staff gage'at site 200 ft upstream at datum 0.8 ft higher. Nov. 2, 1940, 

to Oct. 31, 1944, staff gage at present site and datum.

Average discharge.--16 years, 1,809 ofs (1,310,000 acre-ft per year).

Extremes.--Maximum discharge during year, 173,000 cfs Dec. 22 (gage height, 42.7 ft, from

 floodmarks), from rating curve extended above 52,000 cfs on basis of slope-area determination of peak flow; minimum, 36 el's July 29. ^ ,

1940-56: Maximum discharge, that of Dec. 22, 1955; minimum observed, 9 cfs Oct. 17, 

1944.

Remarks.--Records good except those for periods of no gage-height record, which are fair.

 Flow slightly regulated by Benbow Dam. No diversion. Records of chemical analyses for 

the water year 1956 are given in WSP 1453.

Revisions.--WSP 1395: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In oublo feet per second) 

(Shifting-control method used May 3 to June 21)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

1.9 

2.2 

2.5 

3.0 

4.0

44

114

215

480

1,350

6.0

8.0

12.0

16.0

20.0

3,970

7,200

15,500

26,100

40,500

1.8 

2.1 

2.5 

3.0 

4.0

37

110

275

570

1,560

7.0 5,740

11.0 13,900

19.0 37,900

32.0 101,000

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

£5

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

54

65

79

75

70

67

63

57

-S5 48

89

99

U

*75

65

59

54

50

50

54

59

59

59

57

59

70

72

72

67

63

61

2,018

65.1

4,000

Nov.

59

54

5?

57

61

70

72

72

67

63

59

59

72

132

150

150

156 

206

1,900

9.670

5,670

*2,150

2,210

2,890

1,590

1,170

610

730

613

529

31,545

1,052

62,570

Dec.

8S5

i.sliff

1,180

931

2,730

18,500

7,260

4,210

5,200

3,620

2,910

2,410

2,030

1,760

1,570

2,280

6,350 

20,200

37,200

29,100

37,300

100,000

40,000

18,000

11,000

12,000

11,000

10,200

7,420

5,480

4 200

408,506

13,180

810,300

Jan.

3,820

4,160

3.470

5,990

9,180

7,240

16,500

15,200

9,640

9,450

9,500

7,150

*8,740

22,500

42.900

 25,000

12,200 

8,980

6,940

7,080

7,020

7,820

12,000

8,860

8,290

8,540

10,200

8,620

6,310

*4,840

3,950

322,090

10,390

638,900

Feb.

3,300

2,310

2,510

2,460

2,200

2,000

1,850

1,750

1,650

1,550

1,450

1,350

1,300

1,200

1,150

1,100

1.050 

1,2SO

3,000

16,400

38,400

36,266

 24,000

12,200

13,600

10,400

7,400

6,710

8,010

208,250

7,181

413,100

Mar.

5,930

4,830

4,420

4,680

6,030

5,240

4,380

3,780

3,250

2,770

2,500

2,200

2,000

1,750

1,550

1,400

1,300 

1,200

1,100

1,010

950

910

850

801

783

810

747

704

680

664 m

69,923

2,256

138,700

Apr.

'516" 756

640

619

605

584

570

557

550

 538

531

536

550

524

505

486

479 

479

460

446

434

416

410

404

404

416

410

404

360

364

15,139

505

30,030

May

358

347

347

*538

664

564

531

479

446

434

446

422

392

374

358

352

336 

325

315

310

300

295

285

275

270

262

252

246

244

239

55?

11,267

363

22,350

June

?So" 234

221

216

212

203

198

190

185

185

181

173

169

169

173

173

169 

169

177

*181

173

165

153

149

142

142

138

131

124

120

5,245

175

10,400

July

117 in

110

110

110

107

104

104

101

101

98

101

98

104

101

98

91 

91

94

85

77

72

69

44

37

67

42

37

3T

44

44

2,609

84.2

5,170

Aug.

50

60 *ISo~

60'

60

60

57

57

57

57

55

55

55

53

53

53

51 

51

51

51

50

50

50

50

48

48

48

46

46

46

44

1,632

52.6

3,240

Sept.

44

4T

44

44

42

42

42

42

42

42

44

44

44

44

 44

44

44

42

44

44

42

42

42

42

41

41

41

41

39

35

1,276

42.5

2,530

Calendar year. 1955: Max 100,000 Mln 44 Mean 1;873 Ao-ft 1,356,000

Water Water year year 1955-56: 1955-56: Max Max 100,000 100,000 Min Min 37 37 Mean Mean 2,949 2,949 Ac-ft Ac-ft 2,141,000 2,141,000

Peak discharge (base. 28.000 cfs). Dec. 19 (B p.m.) 53,800 ofs (23.06 ft); Dec. 22 (about 5 a.m. 

173,000 ofs (42.7 ft) ; Jan. 15 (5 p.m.) 56,500 cfs (23.45 ft); Feb. 21 (7 p.m.) 48,900 ofs (21.75 

ft).

* Discharge measurement made on this day.

Note. Ho gage-height record Dec. 22-27, Feb. 5-19, Mar. ll-19j discharge estimated on basis of 

records for station near Bransoomb.
540 EEL RIVER BASIN

Eel River at Scotia, Calif.

Location.--Lat 40°29'30", long 124°05'55", in SWv sec. 5, T. 1 N., R. 1 E., near center of 

span in left pier of bridge on U. S. Highway 101, 0.5 mile north of Scotia and 6 miles 

upstream from Van Duzen River.

Drainage area. 3,113 sq mi.

Records available. December 1910 to February 1915, October 1916 to September 1956.

Gage. Water-stage recorder. Datum of gage is 36.15 ft above mean sea level, datum of 

T929. Prior to September 1934, staff gage at same site and datum. September 1934 to 

Dec. 12, 1940, wire-weight gage at same site and datum.

Average discharge. 43 years (1911-14, 1916-56), 6,666 cfs (4,826,000 acre-ft per year).

Extremes. Maximum discharge during year, 541,000 cfs Dec. 22 (gage height, 61.90 ft), 

from rating curve extended above 200,000 cfs by logarithmic plotting; minimum, 82 cfs 

Sept. 12, 14, 15.

1910-15, 1916-56: Maximum discharge, that of Dec. 22, 1955; minimum observed, 

10 cfs Aug. 12-14, 1924.

Remarks. Records good. Plow slightly regulated by Lake Pillsbury (see p. 527) and by diversion through Potter Valley powerhouse (see p. 529 ). Records of suspended sediment 

loads and water temperatures for the water year 1956 are given in WSP 1453.

Revisions (water years). WSP 931: 1938. WSP 1345: Drainage area.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, In cubic 

feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

8.2

8.4

8.7

9.0

10.0

11.0

12.0

100

150

300

560

1,760

3,320

5,450

16.0

20.0

30.0

40.0

50.0

60.0

18,200

36,000

94,000

178,000

318,000

503,000

8.4

8.6

9.0

10.0

11.0

12.0

70

160

460

1,480

2,990

5,100

13.0

16.0

20.0

30.0

40.0

50.0

7,810

19,500

38,700

96,500

178,000

318,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

138 

144

147

150

158

158

158

150

147

170

170

182

200

*190

178

170

162

162 

158

158

162

162

158

154

158

174

195

195

186

178

174

5,146

166

10, 210

Nov.

174 

166

166

162

166

174

178

182

182

178

170

174

205

270

348

412

540

680 

3,300

23,100

31,300

a8, 500

a8, 000

al2,000

7,450

4,740

3,800

3,360

2,930

2,320

115,327

3,844

288,700

Dec.

*5, 440 

8,200

6,760

4,700

5,140

49,000

*39,900

17,000

18, 000

16,300

11,100

9,100

7,660

6,100

5,120

6,250

15,100

58,900 

134,000

*167,000

114,000

433,000

282,000

113,000

62,600

64,300

61,000

45,100

32,800

25,400

20,700

1,842,670

59,440

*3,655

Jan.

20, 600 

22,500

IB, 500

24, 200

44,100

37,400

60, 500

*73,500

47,300

43,600

52,400

40,000

*42,100

74,700

152,000

144,000

68,400

47,800 

38,700

35,200

37,000

33,600

50,900

43,400

36,400

40,700

49,100

43,100

30,800

24,000

19,600

tl,496.1

48,260

*2,967

Feb.

16,300 

13,900

12,100

10,900

10,200

9,450

*8,700

8,120

7,600

7,030

6,660

6,330

6,130

5,920

5,590

5,200

4,930

4,860 

6,000

45,300

160,000

*188,000

116, 000

62,900

51,400

45,600

32,900

28,700

35,000

_____

921,720

31,780

tl,828

Mar.

27,200 

22,400

20,600

21,000

25,000

23,300

19,200

16,700

15,100

13,700

12,100

10,900

9,900

9,380

8,930

8,310

8,030

8,030 

8,090

8,060

7,810

7,450

7,060

6,850

6,850

7,210

6,940

6,050

5,590

5,440

5, 690

368,870

11,900

731,600

Apr.

5,820 

5,200

4,650

4,220

4,150

4,220

4,130

4,330

4,220

*4,580

5,100

4,630

4,280

3,950

3,760

3,700

5,540

3,600 

3,700

3,950

4,420

4,610

4,610

4,650

4,560

4,240

3,950

3,760

3,680

3,640

127,850

4,262

253,600

May

3,640 

3,640

3,620

*4,040

6,650

6,310

6,470

6,330

4,960

4,420

4,610

4,470

3,840

a5,450

3,030

2,920

3,100

3,260 

3,280

3,440

3,310

3,060

2,990

2,950

2,720

2,540

2,410

2,330

2,280

2,250

2.200

114,500

3,694

227,100

June

2,160 

2,100

,040

,980

,930

,860

,790

,750

,680

,610

,540

,500

,440

,380

,290

,240

,170

,100 

,040

*970

1,030

990

930

890

850

810

750

694

685

649

59,808

1,327

78,960

July

604 

BTT

550

532

505

487

469

460

444

428

404

396

588

580

572

572

364

348 

324

316

286

279

265

258

244

209

181

202

181

160

155

11,140

559

22,100

Aug.

150 

*145

150

160

160

167

167

167

160

155

155

155

155

150

140

135

135

135 

130

125

125

125

125

120

115

110

110

110

110

110

106

4,262

137

8,450

Sept.

102 

152

98

94

94

94

90

90

86

86

86

82

86

82

82

86

90

94 

94

94

94

94

94

94

94

94

90

90

90

90

2,736

91.2

5,430

Calendar year 1955: Max 433,000 Min 102 Mean 8,261 Ac-ft 5,981,000

Water year 1955-56: Max 433,000 Min 82 Mean 13,800 Ac-ft 10,020,000

Peak discharge (base. 61,000 cfs).--Dec. 6 (8 p.m.) 77,800 cfs (27.64 ft); Dec. 20 (4 a.m.) 

217,000 cfs 143.15 ft); Dec. 22 (4 p.m.) 541,000 cfs (61.90 ft); Dec. 27 (5 a.m.) 67,300 cfs (25.22 

ft); Jan. 7 (12 p.m.) 82,500 cfs (27.75 ft): Jan. 16 (1 a.m.) 205,000 cfs (42.20 ft); Feb. 22 

(2 a.m.) 221,000 cfs (43.45 ft).

* Discharge measurement made on this day.

t Expressed in thousands.

a No gage-height record; discharge interpolated or estimated on basis of records for nearby 

streams.
EEL RIVER BASIN 541

Van Duzen River near Dinsmores,'Calif.

Location.--Lat 40°29'15", long 123°37'50", in SEi sec. 5, T. 1 N., R. 5 E., on right bank 

Bridmeville Dinsmores, 2.0 miles upstream from South Fork, and 8.9 miles east of

Drainage area. 80.2 sq mi.

Records available.--August 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 2,320 ft (from topographic map).

Extremes.-Maximum discharge during year, 21,400 cfs Dec. 22 (gage height, 19.25 ft), from 

HjfQC SVeMeX*endel ab2ve 13 '?°° cfs by iogarithmic plotting; minimum not determined. 

1955 Maximum discharge, that of Dec. 22, 1955; minimum, 2.3 cfs Sept. 23-26,

Remarks Records good except those for periods of doubtful or no gage-height record 

which are fair. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22

,d) 

Dec. 23 to Sept. 30

1.0 

1.3 

1.6 

2.0

3.6

8.0

25

65

122

230

3.0

4.0

7.0

11.0

15.0

570

1,090

3,700

8,400

14,200

0.5 

.6

1.0

5.0

12

1.9 230

2,6 480

4,0 1,380

8.0 4,800

10.0 7,080

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

3.6

3.6

3.6

4.0

4.0

.0

.0

.0

.0

.9

.5

.5

.5

.0

.0

.5

.8

.2

.2

.1

.1

.6

.6

8.0

8.7

8.0 *8.7

10

10

9.4

9.4

185.5

5.98

368

Nov.

8^7

8.7

8.7

8.7

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.4

13

18

90

2.860

2,840

*934

400

324

305

293

358

352

287

239

200

9,647.2

322

19,130

Dec.

674

488

366

278

931

2,550

937

663

943

558

530

453

366

305

284

815

1,610

4,960

7,890

5,350

8,990

*15.700

6,990

2,740

1,940

2,300

1,640

1,110

820

652

540

72,373

2,335

143,500

Jan.

570

545

731

2,600

2,160

1,940

1,920

1,200

1,160

1,980

1,820

1,410

2,020

4,270

6.150

2,910

1,670

*1,440

1,180

1,300

1,140

1,370

1,630

1,330

1,070

1,080

1,100

900

740

610

500

50,446

1,627

100,100

Feb.

450

370

320

290

265

250

*235

218

200

192

185

192

180

165

155

145

150

145

320

3,000

9.500

4,600

2,200

1,300

900

580

640

690

620 "

28,457

981

56,440

Mar.

*560

485

628

628

545

440

395

415

453

431

395

367

380

430

400

450

510

590

580

560

540

530

525

515

592

742

535

458

427

431

480

15,417

497

30,580

Apr.

403

356

314

311

328

325

360

346

395

458

*392

336

322

297

281

266

272

284

322

384

399

367

353

342

311

290

269

225

212

202

9,722

324

19,280

May

198

202

236

640 49~5

471

415

346

*304

290

281

230

205

190

188

205

212

222

212

195

178

176

160

150

140

134

123

114

108

105

115

7,240

234

14,360

June

108

92

87

86

79

74

69

65

64

61

59

54

*53

51

51

50

47

47

54

50

45

43

40

38

37

34

33

31

30

.29.

1,661

55.4

3,290

July

27

27

26

25

24

22

22

22

21

20

19

18

18

18

18

17

17

16

14

13

12

11

10

*9.0

8.8

8.4

8.0

7.8

7.6

7.4

7 F it?

501.2

16.2

994

Aug.

B'.B 7.0

6.6

6.4

6.4

6.2

6.2

6.0

6.0

5.8

5.8

5.6

d5.6

d5.4

d5.2

d5.2

dS.O

dS.O

dS.O

5.0

5.0

4.8

4.4

4.4

4.2

4.2

4.0

3^8

3.8

3.8

3.8

162.4

5.24

322

Sept.

3.8

3.8

3.6

3.4

3.2

3.0

2.8

2.8

2.8

3.0

3.0

3.0

3.0

*3.0

3.0

92.2

3.07

183

Calendar year 1955 : Max 13,700 Min 2.3 Mean 340 Ac-ft 246,400

Water year 1955-56 : Max 13,700 Min - Mean 535 Ac-ft 388,500

Peak discharge (base, 3,400 cfs). 

cfs (6.95 ft); Dec. 19 (4 p.m.) 12. 1C

Nov. 19 (6 p.m.) 4,940 cfs (8.15 ft): Dec. 6 (6:30 a.m.) 3.650 

. . .. . 0 cfs (13.63 . ft); Dec. . 22 (2:30 a.m.) .. 21,400 , cfs (19.25 . ft);

Jan. 4 (3 p.m.) 4,670 cfs (7.87 ft); Jan. 15 (1:30 p.m.) 9,340 cfs (11.67 ft); Feb. 21 (about 10 a.m.) 

about 13,000 cfs.

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of records for station near Bridgeville.

Note. Ho gage-height record Nov. 5-14, Jan. 24 to Feb. 7, Feb. 13 to Mar. 1, Mar. 13-22, July 3 

to Aug. 11, Aug. 20 to Sept. 30; discharge estimated on basis of 4 discharge measurements and records for station near Bridgaville.
542 EEL RIVER BASIN

Van Duzen River near Bridgeville, Calif.

Location. Lat 40°27 l 50'r , long 123°51 I 25", in E£ sec. 17, T. 1 N., R. 3 E., on downstream 

side of right pier of bridge on State Highway 36, 0.3 mile downstream from Pip Creek, 

0.5 mile upstream from Rogers Creek, and 4 miles west of Bridgeville.

Drainage area. 214 sq mi.

Records available. October 1950 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 400 ft (from topographic map).

Average discharge.--6 years, 985 cfs (713,100 acre-ft per year).

Extremes.--Maximum discharge during year, 43,500 cfs Dec. 22 (gage height, 21.3 ft, from 

floodmarks), from rating curve extended above 15,000 cfs on basis of slope-area determination of peak flow; minimum, 9.2 cfs Sept. 24.

1950-56: Maximum discharge, that of Dec. 22, 1955; minimum, 6.2 cfs Sept. 23, 24,

1951.

Remarks. Records good. No storage or large diversion.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

2.9 

3.2 

3.5 

3.8 

4.4

10

28

61

122

330

5.0

6.0

8.0

10.0

18.0

660

1,520

4,100

8,100

32,900

2.5

2.6 

2.8 

3,0 

3.5

8.0

14

31

58

172

4.1 

4.8 

7.0 

9.5

16.0

390

850

3,300

7,440

26,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

12

12

11

10

11

12

11

12

12

17

24

22

17

16

14

14

14

14

14

20

20

19

18

17

17

28

24

23

22

535

17.3

1,060

Nov.

 22

22

22

23

30

27

24

24

23

22

11

21

25

35

35

42

77

268

6,320

9.470

 2,920

1,120

1,350

1,030

754

794

754

572

455

388

26,690

890

52,940

Dec.

1,950

1,710

1,230

850

2,610

7,590

2,500

1,570

2,100

1,280

1,250

1,070

842

681

578

1,590

4,390

16,000

22,200

*15,600

22,300

 50.300

17,300

6,330

4,640

6,460

4,370

2,970

2,160

1,680

1 340

187,441

6,046

371,800

Jan.

1,940

1,730

1,810

6,350

5,450

4,370

6,900

3,800

3,460

 4,920

4,480

3,340

5,270

12,000

15.300

7,540

 4,080

3,410

2,950

3,180

2,860

5,050

6,140

3,570

2, §30

2,650

2,880

2,200

1,750

1,420

1.190

134,620

4,343

267,000

Feb.

994

842

762

714

669

627

601

574

537

507

484

478

484

446

410

112

386

372

596

8,810

24.900

 11,900

5,710

3,130

2,630

1,920

1,590

2,080

2,020

-

75,545

2,605

149,800

Mar.

*1,620>

1,540

1.940

1,940

1,860

1,440

1,230

1,240

1,290

1,170

1,050

940

958

1,030

967

1,020

1,130

1,290

1,280

1,150

1,090

1,080

1,040

1,010

1,090

1,470

1,040

895

826

826

1,020

37,472

1,209

74,320

Apr.

754" 877

648

620

634

620

655

634

683

810

722

*600

568

531

495

468

473

484

519

600

641

581

555

543

501

462

440

390

368

...414

17,230

574

34,180

May

345

341

368

1.130

994

994

850

662

*555

537

594

473

415

386

376

381

386

376

376

354

329

317

313

294

279

265

248

234

221

218

212

13,823

446

27,420

June

228

205

196

196

190

175

164

156

149

141

136

132

124

122

124

122

115

108

136

136

122

110

100

91

83

76

72

69

65

S3.

3,906

130

7,750

July

M

58

56

54

52

50

*50

49

48

46

44

43

42

43

43

41

39

37

33

32

29

28

27

 25

24

25

24

23

22.

22

24

1,191

38.4

2,360

Aug.

22

2T

21

21

20

20

20

20

21

20

17

18

19

18

16

16

 16

16

16

16

16

16

15

14

14

13

13

13

12.

12

12

524

16.9

1,040

Sept.

12

12

12

12

11

10

9. a

9.8

9.8

11

11

11

12

 12

11

11

11

11

11

10

9.8

9.8

9.8

9.8

9.8

9.8

9.8

9.8

9.8

9.8

318.4

10.6

632

Calendar year 19§§ : Max 30,300 Mln 8.0 Mean 898 Ao-ft 649,900

Water year 1955-56 : Max 30,300 Mln 9.8 Mean 1,364 Ao-ft 990,300

Peak discharge (base. 9.100 cfs).--

cfs (11.07 ft); Dec. 19 (4 p.m.) 30,2

Nov. 19 (8:30 p.m.)l6,300 cfs (12.80 ft); Dec. 6 (4 a.m.) 11,000 

00 cfs (17.17 ft); Dec. 22 (1 a.m.) 43,500 cfs (21.3 ft); Jan. 4

(4 D.m.) 11,000 cfs (11.06 ft); Jan. 7 (2 a.m.) 9.290 cfs (10.36 ft): Jan. 15 (2:30 p.m.) 20,500 cfs 

(14.12 ft); Jan. 22 (12 p.m.) 9,480 cfs (10.44 ft); Feb. 21 (ll a.m.) 31,100 cfs (17.43 ft). 

* Discharge measurement made on this day.
EEL RIVER BASIN 543

Yager Creek near Carlotta, Calif.

Location. Lat 40°34'10", long 124°03'10", in SE£ sec. 10, T. 2 N., R. IE., on right bank 

0.6 mile upstream from Cooper Mill Creek and 2.3 miles north of Carlotta. Prior to 

Aug. 14, 1956, at site 0.2 mile upstream.

Drainage area. 127 sq mi.

Records available. August 1953 to October 1955 (destroyed by flood of December 1955), 

August to September 1956.

Gage. Water-stage recorder. Altitude of gage is 190 ft (from topographic map). Prior to 

Tfug. 14, 1956, water-stage recorder at site 0.2 mile upstream at different datum.

Extremes. Maximum discharge recorded during year, 28,000 cfs Dec. 22 (gage height,

17.4 ft, from floodmarks, site and datum then in use), from rating curve extended above 

8,200 cfs on basis of slope-conveyance study; minimum recorded, 4.8 cfs Sept. 27, 28.

1953-56: Maximum discharge, that of Dec. 22, 1955; minimum recorded, that of 

Sept. 27, 28, 1956.

Remarks. Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

1.4

1.5

1.6 

1.8

4,0

6.2

10

22

Aug. 14 to Sept. 30

2.9

3.1

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

fi§

6.0

6.0

6.0

6.0

6.0

6.0

6.0

9.2

18

14

13

12

10

8.9

8.5

8.1

7.7

8.5

9.6

11

10

9.6

8.9

21

22

14

14

12 

11

315.0

10.2

625

Nov.

flO

Dec.

tl,750

Jan. Feb. Mar. Apr. May June July Aug.

;

-

-

-

_

-

-

-

-

_

-

.

*7.6

7.6

7.6

7.6

7.6

7.6

7.6

7.6

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

7.4

-

-

-

Sept.

7.4

77?

7.0

7.0

6.7

6.7

6.7

6.3

6.3

6.3

6.5

6.1

6.1

*5.9

5.7

5.5

5.5

5.4

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

4.8

47S

5.0

5.2

175.7

5.86

348

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ao-ft

Peak discharge (base, 4.000 cfa).--Peaks not determined. 

* Discharge measurement made on this day. 

t Result of discharge measurement.
544 JACOBY CREEK BASIN

Jacoby Creek near Freshwater, Calif.

Location. La t 40°47'30", long 124°00'10", in NW£ sec. 30, T. 5 N. , R. 2 E. , on left bank 

300 ft downstream from unnamed tributary, 3.7 miles northeast of Freshwater, and 

6.5 miles southeast of Arcata.

Drainage area.' 6.07 sq mi.

Records available. December 1954 to September 1956.

Gage.--Water-stage recorder and concrete control with 90° V-notch weir. Altitude of gage 

is 800 ft (from topographic map).

Extremes. Maximum discharge during year, 1,490 cfs Dec. 21 (gage height, 6.75 ft), from 

rating curve extended above 140 cfs on basis of slope-area determination of peak flow; 

minimum, 0.8 cfs on many days during August and September.

1954-56: Maximum discharge, 1,670 cfs Dec. 30, 1954 (gage height, 7.20 ft), from 

rating curve extended above 140 cfs on basis of slope-area determination at gage height 

6.75 ft; minimum, that of August and September 1956.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 21

1.0

1.1

1.5 19

2.0 69

2.5 127

3.0 202

4.0 470

Dec. 22 to Sept. 30

0.8

1.2

1.2

1.4

74

131

202

470

820

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19 

20

21

22

23

24

26

27

28

29

30

31

Total

Moan

Ac-ft

Oct.

0.9

t c i!o

1.0

.9

t c

t c '.9

4.5

1.9

1.3

1.1 

1.1

1.1

1.0

1.0

1.0

.0 

.0

.0

.0

.0

1.0

1.7

2.0

1.5

*1.2

1.1

1.1

1.1

38.0

1.23

75

Nov.

1.9

1.5

1.3

1.5 

1.7

1.4

1.3

1.2

1.2

I^i

1.1

1.1

1.2 

1.4

1.2

2.0

4.6

3.9 *31 

«54

28

10

32

16

9.4

7.9

7.6

6.7

6.2

7.3

246.7

8.22

489

Dec.

72

78

57

24 

26

62

34

20

19

15

14

16

14 

12

10

21

50

97

103 

82

*353

548

221

87

55

80

70

50

38

28

22

2,378

76.7

4,720

Jan.

47

38

28

49 

53

*46

96

75

48

40

33

38

64 

127

221

103

63

44

38 

43

54

130

100

70

55

47

110

60

45

32

22

2,024

65.3

4,010

Feb.

22

18

15

13 

13

12

11

9.7

8.7

8.2

7.7

7.7

7.3 

6.9

6.5

ea

14

15

20 

100

200

160

100

70

55

45

37

46

40

1,074.8

37.1

2,130

Mar.

37

33

40

f

35

30

24

*27

33

26

21

17 

16

14

12

11

10

9.7 

8.7

8.7

7.7

7.3

6.9

8.2

9.2

7.3

6.9

6.5

775

16

588.4

19.0

1,170

Apr.

18

*13

11

9.2 

8.7

7.7

6.9

6.5

6.1

6.5

6.9

5.7

5.4 

5.7

5.7

5.4

5.4

5.0

4.8 

4.8

4.4

4.2

4.2

4.2

4.4

4.4

4.2

4.0

3^8

3.8

190.0

6.33

377

May

3.8

3^6

3.8

18 

13

15

9.7

9.2

8.2

16

*19

14

11 

9.2

7.3

6.5

5.4

5.0

5.0 

5.0

4.8

4.4

4.4

4.2

4.0

4.2

4.0

4.0

3.8

3.8

3.6

232.9

7.51

462

June

3.4

3.2

3.2

3.6 

3.3

3.2

3.0

2.8

2.7

3.4

2.8

2.6

2^4 

6.5

4.4

3.6

3.4

3.4

10 

6.1

4.8

4.0

3.8

3.6

3.3

3.0

2.7

2.6

2.5

2.4

109.7

3.66

218

July

2.3

2^4

2.4

2.3 

2.2

2.2

*2.2

2.1

2.0

2.0

1.9

1.9

2.1

2.0

1.9

1.8

1.7

1.7

1.6 

1.6

1.5

1.4

1.4

1.4

1.4

*1.4

ill

1.3

1.3

1.3

1.3

55.3

1.78

110

Aug.

1.2

1.2

1.2

1.3 

1.3

1*1

1.3

1.2

1.2

1.0

1.0

1.0

1.0 

1.0

1.0

.9

.9

.9

.9 

.9

.9

.9

.9

.9

.9

.9

.8

.8

.8

.8

31.1

1.00

62

Sept.

0^

.8

.8

.8 

.8

.8

.8

.8

.8

.8

^1 *.8

.9 

.9

.9

.9

.8

.8

.8 

.9

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

24.9

0.83

49

Calendar year 1956: Max 548 Min 0.9 Mean 14.1 Ao-ft 10,180

Water year 1955-56: Max 548 Min 0.8 Mean 19.1 Ac-ft 13,870

Peak discharge (base, 300 ofs).--Dec. 21 (11:30 p.m.) 1,490 cfs (6.75 ft); Jan. 15 (9 a.m.) 317 

ofs (3.49 ft); Feb. 21 (time unknown) 422 ofs (3.85 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 14-27, Jan. 22 to Feb. 3, Feb. 18 to Mar. 9j discharge estimated 

on basis of recorded range in stage and records for Little River near Crannell.
MAD RIVER BASIN 

Mad River near Forest Glen, Calif.

545

Location. Lat 40°27'30", long 123°30135", in Sw£ sec. 16, T. 1 N., R. 6 E., on right bank 

0.7 mile downstream from Lamb Creek and 7.0 miles northwest of Forest Glen. Prior to 

June 19, 1956, at site 0.7 mile upstream.

Drainage area.--144 sq mi. Prior to June 19, 1956, 139 sq mi. 

Records available.--June 1953 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,410 ft (from topographic map). Prior 

Uo Dec. 22, 1955, water-stage recorder at site 0.7 mile upstream at different datum. 

Jan. 13 to June 18, 1956, wire-weight gage at former site at datum 4.17 ft lower than 

former datum.

Extremes. Maximum discharge during year, 39,200 cfs Dec. 22 (gage height, 23.6 ft, from 

floodmarks, site and datum then in use), from rating curve extended above 8,100 cfs 

on basis of slope-area determination of peak flow; minimum, 1.5 cfs Oct. 1-3, 7-9.

1953-56: Maximum discharge, that of Dec. 22, 1955; minimum, 1.3 cfs Sept. 12, 1955.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Wo regulation or diversion.

Revisions (water years). WSP 1395: 1954(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

feet per second)

Oct. 1 to Dee. 22

1.6

1.7 

1.9 

2.2

2.6

1.0

2.3

5.8

14

35

70

126

204

312

5.0

6.0

7.0

8.0

9.0

11.0

14.0

17.0

440

780

1,260

1,920

2,720

4,550

8,600

15,400

Dec. 

7

23 to June 18 June 19 to Sept. 30

20.0

32

55

127

266

467

725

1,980

3,570

6,780

11,700

2.1

2.2

2.3

2.4

2.5

2.0 

4.3

13

28

46

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1.5

TT5

1.5

1.6

1.6

1.6

1.5

1.5

1.5

2.6

2.8

2.0

1.8

1.6

1.6

1.6

1.6

1.6

2.3

4.9

3.3

2.6 

2.2

2.0

2.3

3.3

*3.2

2.6

2.6 

2.6

2.6

67.5

2.18

134

Nov.

3.0

2.8

2.6

37?

3.3

3.2

2.8

2.6

2.6

2.6

2.6

2.6

3.8

4.9

4.2

6.3

7.6

32

*586

*1,890

847

319 

259

279

218

200

181

156

133 

113

5,273.7

176

10,460

Dec.

269

353

257

190

664

2,830

876

595

900

584

440

350

281

228

199

395

1,020

4,110

7,910

4,920

10,100

*14,5QO 

*4,000

2,600

2,300

2,020

1,250

1,000

820

680

580

67,221

2,168

133,300

Jan.

630

600

570

1TO

1,500

1,000

1,570

1,250

940

1,400

1,520

1,200

2,920

5,140

7,790

4,330

2,020

2,020

1,770

1,770

1,700

1,890 

2,720

1,880

1,580

1,540

1,480

1,140

895

698 

642

56,975

1,838

113,000

Feb.

491

401

360

380

340

321

*340

360

340

321

284

302

266

266

266

233

266

218

233

2,630

10,000

6,170 

3,470

2,020

1,380

1,080

835

752

752

35,077

1,210

69,570

Mar.

835

*808

1,100

1,100

1,040

808

725

752

752

752

670

642

615

670

642

642

752

752

865

865

808

670 

670

642

642

642

590

491

422

ffi

22,188

716

44,010

Apr.

401 360"

284

266

250

233

218

233

250

266

*250

218

203

203

203

203

189

175

175

175

175

175 

162

150

150

127

138

127

127

116

6,202

207

12,300

May

106

106

106

250

422

340

380

422

302

*266

250

233

203

189

162

150

150

138

127

106

87

87 

87

87

87

87

70

70

70

70

70

5,280

170

10,470

June

62

55

87

TO

55

55

55

49

42

42

42

42

*37

32

32

32

32

32

43

43

41

37 

35

33

31

29

28

26

25

23_

1,247

41.6

2,470

July

22

22

20

20

19

19

17

17

16

14

13

12

13

14

13

12

12

11

9.5

9.5

9.5

8.4 

7.4

7.4

6.6

6.6

6.6

5.8

5.8

5.8

5.2

380.1

12.3

754

Aug.

5.2

T76

*4.5

4.6

4.6

4.6

* 4.3

4.3

4.3

4.0

4.0

4.0

4.0

3.7

3.4

3.4

3.4

3.2

3.2

3.2

3.2

3.2 

2.9

2.9

2.7

2.5

2.5

2.3

2.3

2.1 

27T

109.3

3.53

217

Sept.

2.1

270

275

2.0

2.0

2.0

2.0

2.0

2.0

2.1

2.1

2.1

2.0

*2.0

2.0

2.0

2.0

2.0

2.1

2.1

2.0

2.0 

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

60.6

2.02

120

Calendar year 1955: Max 14,500 Mln 1.4 Mean 319 Ae-ft 230,600

Water year 1955-56: Max 14,500 Min 1.5 Mean 547 Ac-ft 396,800

Peak discharge (base, 3,000 of s) . Dec. 6 (7:30 a.m.) 3,880 cfs (10.32 ft); Dec. 19 (5 p.m.)

11,800 cfs (15.55 ft); Dec. 22 (about 4 a.m.) 39,200 cfs (23.6 f t) j Jan. 15 (5 p.m.) 9,440 cfs

(18.9 ft); Jan. 22 (12 p.m.) 3,120 cfs (13.5 ft); Feb. 21 (3 p.m.) 12,000 cfs (20.15 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 22 to Jan. 12; discharge estimated on basis of records for

station near Arcata.
546 MAD RIVER BASIN

Mad River near Arcata, Calif.

Location. Lat 40°54'35", long 124°03'35", in NW£ sec. 15, T. 6 N., R. IE., on right 

bank 100 ft upstream from bridge on U. S. Highway 299, 1.0 mile downstream from Warren 

Creek, and 2.8 miles northeast of Arcata. Prior to July 24, 1956, at site 0.6 mile 

upstream.

Drainage area.--485 sq mi.

Records available.--December 1910 to September 1913, August 1950 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 17.79 ft above mean sea level, datum of 

T929, supplementary adjustment of 1956. Prior to August 1950, staff gage at site 

0.1 mile upstream at different datum. August 1950 to July 23, 1956, water-stage recorder at site 0.6 mile upstream at datum 6.00 ft higher.

Average discharge.--8 years (1911-13, 1950-56), 1,677 cfs (1,214,000 acre-ft per year).

Extremes.--Maximum discharge during year, 77,800 cfs Dec. 22 (gage height, 27.30 ft, site 

and datum then in use), from rating curve extended above 34,000 cfs on basis of slopearea determination of peak flow; minimum, 17 cfs Sept.'27.

1910-13, 1950-56: Maximum discharge, that of Dec. 22, 1955; minimum, 16 cfs Sept. 8, 

9, 1951.

Remarks. Records good. Since 1938, approximately 5.4 cfs diverted daily above station 

for municipal supply of city of Eureka.

Revisions.--WSP 1215: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge. In cubic 

feet per second)

Oct. 1 to Feb. 29 Mar. 1 bo July 23 July 24 to Sept. 3O

1.4 

1.7 

2.0 

2.5 

3.0 

4.0

22 6.0 3,420 1.2 63 4.O 1,16O 2.8 

62 8.0 7,200 1.9 162 5.0 2,070 3.0 

125 11.0 15,800 2.5 292 6.O 3,420 3.2 

315 15.0 29,800 3.0 480 7.0 5,2OO 3.4 

555 24.0 64,600 

1,160

Discharge, In cubic feet per second, water year October 1955 to September 1956

22

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oof.

32

29

27

26

26

27

27

27

27

38

52

54

54

53

50

47

42

39

37

35

37

38 

38

39

40

 54

59

60

58

53

52

1,277

41.2

2,530

Nov.

53

56

54

56

60

69

71

69

66

64

62

59

56

54

64

66

152

234

3,120

»9 . 100

5,960

2,060 

1,970

1,780

1,310

1,330

1,600

1,120

848

688

32,251

1,075

63,970

Dec.

3,610

3,900

3,040

1,830

2,300

12,300

6,110

3,160

3,740

2,790

2,380

2,150

1,670

1,330

1.100

1,370

3,100

 12,300

 22,600

20,500

24,100

 65.100 

31,300

16,000

9,310

9,440

8,650

6,180

4,300

3,200

2,520

289,380

9,335

574,000

Jan.

2,860

2,920

2,500

5,090

7,140

 5,360

8,170

6,760

4,880

6,320

7,160

5,400

7,260

20,700

52.400

19,700

10,400

7,780

6,460

6,500

6,460

11,100 

15,100

8,580

5,820

4,710

7,470

5,500

3,740

2,860

2,580

249,480

8,048

494,800

Feb.

2,000

1,750

 1,580

1,490

1,440

1,590

1,550

1,500

1,260

1,220

1,180

1,150

1,120

1,100

1,060

1.010

1,020

1,050

1,190

6,950

51,100

»25,600 

15 , 600

7,510

6,680

5,140

5,660

5,460

4,710

151,050

4,518

259,900

Mar.

5,340

2,750

5,250

4,070

4.750

3,500

2,720

2,500

2,550

2,510

2,060

1,820

1,710

1,780

1,750

1,750

1,840

2,120

2,170

1,970

1,820

1,770 

1,720

1,660

1,670

1,970

1,680

1,450

1,540

1.500

1,620

68,650

2,215

136,200

Apr.

1.700

1,450

1,270

 1,170

1,140

1,090

1,090

1,070

1,070

1,150

1,120

1,010

935

912

868

831

803

762

749

775

789

749 

716

697

678

671

621

585

546

520.

£7,537

918

54,620

May

500

»485

490

921

1,360

1,340

1.480

1,230

1,020

965

1,200

965

824

730

671

615

568

541

515

490

457

439

417

400

577

566

555

542

529

525

516

21,055

678

41,720

June

307

298

284

298

292

273

260

248

238

235

*226

215

205

217

250

224

209

205

276

284

242

219 

205

190

177

165

155

150

140

155

6,818

227

13,520

July

130 120"

115

110

105

100

96

92

88

85

80

76

85

90

85

82

78

75

72

70

67

65 

65

61

61

 58

55

55

54

51

48.

2,472

79.7

4,900

Aug.

44

44

44

44

46.

46

46

46

45

43

42

42

42

59

59

58

57

58

38

58

56

56 

35

54

42

56

50

29

29

29

29

1,206

38.9

2,390

Sept.

50

50

50

29

28

28

27

26

28

28

29

 29

51

52

54

51

52

50

29

27

27

26 

26

26

26

26

24

24

23

24

840

28.0

1,670

Calendar year 1955: Max 63,100 Mln 23 Mean 1,526 Ac-ft 1,105,000

Water year 1955-56: Max 63,100 Mln 23 Mean 2,273 Ac-ft 1,650,000

Peak discharge (base, 14,000 efs). Dec. 6 (1 p.m.) 16,400 cfs (11.17 ft); Dec. 19 (8 p.m.) 29,800 

cfs (14.99 ft); Dec. 22 (7 a.m.) 77,800 cts (27.50 ft); Jan. 15 (2 p.m.) 36,600 cfs (16.95 ft); 

Jan. 22 (11 p.m.) 20,400 efs (lE.50 ft); Feb. 21 (2:50 p.m.) 59,200 efs (17.65 ft).

* Discharge measurement made on this day.

Note. No gage-height record June 26 to July 23; discharge estimated on basis of records for station near Forest Qlen.
LITTLE RIVER BASIN 547

Little River at Crannell, Calif.

Location. Lat 41°00'40", long 124°04 I 50", in NEiJ- sec. 8, T. 7 N., R. 1 E., on right bank 

at Crannell, 0.5 mile upstream from Coon Creek and 9.1 miles north of Aroata.

Drainage area. 44.3 sq mi.

Records available. --October 1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 17.62 ft above mean sea level, datum of 

T929.

Extremes .--Maximum discharge during year, 8,480 cfs Dec. 22 (gage height, 9.63 ft), from 

rating curve extended above 2,700 cfs by logarithmic plotting; minimum, 3.3 cfs 

Sept. 27-30.

Flood of Jan. 17, 18, 1953, reached a stage of 15.7 ft, observed by an employee of 

Hammond Lumber Co.

Remarks . Records good. No storage or diversion above station.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

1.2

1.3

1.4 

1.6 

1.8 

2.0

4.2

8.0

13

29

54

93

2.5 

3.0 

4.0 

6.0 

7.3

244

455

1,010

2,550

4,830

0.9

1.0

1.1

1.2

1.3 

1.6

1.0 

3.6

59

2.0 

2.5 

3.0 

4.0 

6.0 

7.8

133

275

475

1,010

2,550

4,830

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

ft? e!i

6.5

6.5

6.5

6.5

7.2

7.2

39.

16

10

8.0

7.2

6.9

6.5

6.1

6.1

6.1

6.1

6.1

6.1 

6.1

5.7

11

*26

12

9.5

8.0

8.0 

8.0

282.4

9.11

560

NOV.

10 

10

9.0

14

23

14

11

10

8.5

7.6

7 2

TtS

12

17

12

13

24

29

*960

708

391

138 

»364

260

109

91

98

68

51

48

3,524.9

117

6,990

Dec.

735 

542

472

234

423

1,080

462

278

263

191

227

244

191

142

114

148

403

1,540

1,250

893

2,300

4.750 

1,860

925

550

625

640

540

386

289 

231

22,908

739

45,440

Jan.

306 

272

228

TIT

475

»382

769

610

532

879

698

488

645

»1,730

4.370

1,450

802

615

595

640

1,410 

1,200

676

488

470

1,210

662

439

330 

»258

24,551

792

48,700

Feb.

207 

174

152

138

127

114

104

97

89

84

79

75

72

69

64

61

72

70

172

827

*2.160

1,390 

1,210

687

980

686

506

517

829

11,812

407

23,430

Mar.

466 

350

334

525"

414

»326

282

244

204

177

157

138

129

116

106

101

97

93

88

84

82 

79

73

82

108

84

75

72

Jg

185

5,934

191

11,770

Apr.

172 

»12T

106

93

84

79

72

70

65

67

67

59

56

55

55

52

49

45

44

42

41

38 

40

38

41

41

36

35

3232"

1,833

61.1

3,640

May

31 

30

35

127

89

80

»67

58

69

95

72

62

55

49

44

40

37

38

36

33

32

31

30

29

28

27

26

26

30 

29

1,524

49.2

3,020

June

27 

25

24

30

27

24

23

21

20

23

»21

20

19

26

27

22

20

20

49

35

26

22 

20

20

18

*16

15

14

14

13.

681

22.7

1,350

July

13 

13

13

13

12

12

12

12

1213'

13

12

13

13

13

12

11

11

10

9.7

9.7

9il

9.1

*9.1

9.1

9.1

9.7

9.7 

9.1

344.6

11.1

684

Aug.

f*

7.6

8.1

9.1

8.6

8.6

8.6

8.1

7.6

7.1

7.6

7.1

'etT g a ].

6.1

6.1

6.1

6.1

6.1

6.1

6.1 

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1 

6.1

215.1

6.94

427

Sept.

ItT

eii

6.1

6.1

6.1

6.1

6.1

6.1

6.1

6.1

*5.6

4.6

4.1

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6 

3.6

3.6

3.6

3.6

3.1

3.3

3.3

3.3

137.8

4.59

273

Calendar year 1955: Max - Min - Mean - Ac-ft -

Water year 1955-56: Max 4,730 Min 3.3 Mean 201 Ac-ft 146,300

Peak discharge (base. 1.500 efs). Nov. 19 (5 p.m.) 2,390 cfs (5.82 ft); Dec. 6 (8 a.m.) 1,510 cfs 

(4.73 ft); Dec. 18 (3 a.m.) 2,920 cfs (6.37 ft); Dec. 22 (2 a.m.) 8,480 cfs (9.63 ft); Jan. 15 

(12 m.) 6,730 cfs (8.84 ft); Jan. 22 (7 p.m.) 3,020 cfs (6.47 ft); Jan. 27 (8 a.m.) 1,800 cfs (5.12 

ft); Feb. 21 (10 a.m.) 3,450 cfs (6.83 ft).

* Discharge measurement made on this day.
548 REDWOOD CREEK BASIN

Redwood Creek near Blue Lake, Calif.

Location. Lat 40°54'20", long 123°48'55", in NE^ sec. 15, T. 6 N., R. 3 E., on right bank 

400 ft upstream from Lupton Creek and 9.1 miles east of town of Blue Lake.

Drainage area.--67.5 sq mi.

Records available.--June 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 850 ft (from topographic map).

Extremes.--Maximum discharge during year, 12,100 cfs Dec. 21 (gage height, 13.68 ft), from 

rating curve extended above 5,800 cfs by logarithmic plotting; minimum, 7.0 cfs Oct. 2. 

1953-56: Maximum discharge, that of Dec. 21, 1955; minimum, 5.4 cfs Sept. 5, 1955. 

Flood of Jan. 17, 1953, reached a stage of 15.3 ft, from floodmarks.

Remarks.--Records good. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

(Shifting-control method used Jan. 14)

Oct. 1 to Dec. 21 22 to Feb. 21 Feb. 22 to Sept. 30

0.9 

1.0 

1.2 

1.5 

2.1

4.3 

8.4

3.0

4.5 

6.0 

8.0 

9.0

441

1,150

2,130

4,100

5,500

2.9 

3.5 

4.4 

5.5 

8.0 

11.0

160

310

685

1,460

4,100

8,300

1.4 

1.6 

1.8 

2.0 

2.3

5.9

13

3.0 

4.0 

5.0 

7.0

245

565

1,080

2,920

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

£1

22

£3

24

25

26

21

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.4

7.4

7.4

7.9

8.4

8.4

7.9

7.4

7.4

28.

19

13

11

9.9

9.4

8.9

7.9

7.4

7.4

13

12

10

9.9

*9.4

9.4

24

16

13

11

11

12

342.2

11.0

679

Nov.

22

16

14

22

29

19

16

14

13

12

12

11

Te

17

15

28

51

104

899

995

472

239

373

267

221

361

323

*233

183

170

5,167

172

10,250

Dec.

937

588

441

313

862

2,010

790

670

696

512

520

437

355

310

286

457

748

1,920

*3,170

2,470

5,040

7.900

4,740

2,720

2,050

2,260

1,780

1,230

888

724

635

48,459

1,563

96,120

Jan.

734

640

625

1,270

*1,020

812

1,100

842

724

874

830

757

950

*4,340

5.740

3,150

2,140

1,780

2,420

2,400

2,150

3,550

2,780

1,890

1,470

1,150

1,360

1,040

782

615

522

50,457

1,628

100,100

Feb.

*439

390

356

331

307

283

265

259

255

212

202

202

202

192

180

*162

184

170

208

1,860

*4.410

2,830

1,770

1,190

1,060

835

830

795

795

21,174

730

42,000

Mar.

614

569

*740

760

686

557

518

514

518

455

406

361

346

340

328

328

346

370

355

325

319

319

316

319

367

406

337

310

295

307

364

13,095

422

25,970

Apr.

331

304

285

*280

275

270

275

265

282

310

282

262

245

238

230

220

218

222

240

262

270

252

242

240

235

225

203

189

181

174

7,507

250

14,890

May

167

167

181

346

295

304

292

248

218

240

*24O

208

192

181

174

172

167

163

156

146

138

132

124

118

112

108

104

98

92

92

90.

5,465

176

10,840

June

88

79

78

100

87

76

69

66

63

63

61

55

54

64

68

60

55

55

96

69

58

54

49

48

45

43

40

38

*36

54

1,851

61.7

3,670

July

32

32

32

31

31

30

29

28

27

25

24

24

26

26

24

22

21

20

19

18

17

17

*17

16

16

16

15

14

14

14

14

691

22.3

1,370

Aug.

14

14

14

14

14

14

14

14

13

12

12

12

12

12

12

12

12

12

12

12

11

11

10

11

11

10

10

10

10

9.7

9.7

370.4

11.9

735

Sept.

9.4

9.4

9.0

8.7

8.7

8.3

8.3

8.7

8.7

8.7

*9.4

9.4

9.0

8.7

8.7

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.0

7.7

7.4

7.4

7.4

7.4

7.4

7.4

251.3

8.38

498

Calendar ysar 1955: Max 7,900 Min 6.2 Mean 264 Ac-ft 191,200

Water year 1955-56: Max 7,900 Min 7.4 Mean 423 Ac-ft 307,100

Peak discharge (base. 1,900 cfs). Dec. 6 (8 a.m.) 2,960 cfs (7.01 ft); Dec. 19 (1 p.m.) 6,090 cfs 

(9.42 ft); DecT 21 (12 p.m.) 12,100 cfs (l3.68 ft); Dec. 26 (12 m.) 2,860 cfs (6.95 ft); Jan. 4 

(1p.m.) 2,080 cfs (6.18 ft); Jan. 15 (11 a.m.) 7,560 cfs (10.47 ft); Jan. 22 (7 p.m.) 6,550 cfs 

(9.75 ft); Feb. 21 (9 a.m.) 6,550 cfs (9.75 ft).

* Discharge measurement made on this day.
REDWOOD CREEK BASIN 549

Redwood Creek at Orick, Calif.

Location.--Lat 41°17'20", long 124°03'30", in NE^ se c. 4, T. 10 N., R. IE., on downstream 

side of left pier of bridge on U. S. Highway 101 at Orick, 0.9 mile downstream from 

Prairie Creek.

Drainage area.--278 sq mi.

Records available. September 1911 to August 1913, October 1953 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 10 ft (from topographic map). Sept. 10, 

1911, to Aug. 28, 1912, chain gage and Aug. 29, 1912, to Aug. 9, 1913, staff gage, at 

same site at different datum.

Extremes. Maximum discharge during year, 50,000 cfs Dec. 22 (gage height, 23.95 ft); 

minimum, 20 cfs Oct. 1.

1911-13, 1953-56: Maximum discharge, that of Dec. 22, 1955; minimum, 10 cfs 

Sept. 22-24, 1911.

Flood of Jan. 18, 1953, reached a stage of 23.95 ft, from floodmarks (discharge, 

50,000 cfs).

Remarks.--Records fair. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Shifting-control method used Oct. 1 to Hov. 16, Hov. 21 to Dec. 1, 

Dec. 3-5, 10-17, Dec. 25 to Jan. 9, Jan. 15, 17-22, Feb. 21 to 

Mar. 31, Sept. 27-30)

Oct. 1 to Dec. 22 Dec. 22 to Sept. 30

4.1 

4.3

4.5 

5.0 

5.5 

6.0

110

215

370

7.0

8.0

9.0

10.0

12.0

15.0

1,600

2,650

4,070

8,260

15,600

17

52

104

280

630

8.5

10.0

12.0

18.0

22.0

1,330

3,150

6,900

23,400

38,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

21

21

21

21

21

21

21

Z9

30

 321

172

95

70

48

44

41

35

33

31

30

30

32

30

29

41

125

81

62

48

47

46

1,697

54.7

3,370

Nov.

70

70

61

70

116

101

81

71

61

55

47

46

74

139

95

98

218

359

4,440

5.210

3,040

 1,460

1,960

1,710

1,240

1,260

1,450

1,110

920

812

26,444

881

52,450

Dec.

3,790

3,770

3,020

2,010

2,360

8,010

4,940

3,340

3,750

2,600

2,310

2,060

 1,700

1,460

1.310

*1,610

2,190

7,630

10 , 400

9,520

13,900

35.500

17,300

9,420

6,100

5,950

5,670

4,420

3,480

2,870

2,360

184,550

5,953

366,000

Jan.

2,760

2,500

2.250

3,330

*4,100

3,300

4,550

4,410

3,910

4,870

*4,870

4,040

4,600

11,500

»21.200

15 , 000

8,390

6,790

*5,720

5,680

5,580

9,130

12,400

7,440

5,320

4,370

5,740

4,680

3,560

2,870

*2,400

187,260

6,041

371,400

Feb.

2,010

1,720

1,490

1,350

1,230

1,120

1,020

937

*860

797

754

719

702

680

648

616 692"

*702

825

5,300

*16.800

12 , 600

8,430

5,300

5,500

4,690

4,000

3,960

5,280

-

90,732

3,129

180,000

Mar.

3,890

3,160

3,440

4,330

4.390

*3,380

2,800

2,540

2,430

2,120

1,840

1,620

1,480

1,380

1,290

1,220

1,200

1,220

1,180

1,070

1,000

951

916

881

937

1,290

1,020

902

839

853

1,360

56,929

1,836

112,900

Apr.

1.380

1,180

1,050

972

916

867

832

797

*760

778

778

686

634

608

585

569

545

525

517

533

545

521

498

484

480

480

446

414

394

378

20,152

672

39,970

May

362

353

*362

686

790

644

724

621

537

541

675

561

502

463

432

407

387

371

365

347

332

317

305

294

283

272

267

257

249

251

254

13,211

426

26,200

June

236

223

218

254

249

218

206

197

191

Z09

193

180

173

*206

214

193

180

175

288

251

204

186

175

167

158

152

146

140

135

129

5,846

195

11,600

July

126

124

122

120

118

117

113

111

108

104

102

99

101

106

102

98

93

90

85

*80

79

78

75

73

71

69

69

68

67

64

63

2,895

93.4

5,740

Aug.

62

61

61

62

62

61

61

59

56

55

53

53

51

50

50

48

48

47

47

46

46

44

43

43

42

41

40

38

38

36

36

1,540

49.7

3,050

Sept.

35

34

32

31

31

31

29

29

29

32

39

36

32

31

30

30

27

26

27

27

27

27

25

24

23

23

22

21

22

21

853

28.4

1,690

Calendar year 1955: Max 35,300 Mln 18 Mean 1,125 Ac-ft 814,400

Water year 1955-56 : Max 35,300 Mln 21 Mean 1,618 Ac-ft 1,174,000

Peak discharge (base 7,000 efs). Hov. 19 (ll p.m.] 

cfs (14.78 ft]

8,770 cfs (12.22 ft); Dec. 6 

Dec. 22 (6 a.m.) 50,000 efs

11 a.m.) 9,630 

... (12.58 ft); Dec. 19 (7 p.m.) 15,000 ._ ,__.._ _.,, __ ,. _. __, __.. .__. 23.95 ft); _.,, 

Jan. 15 (3 p.m.) 22,200 cfs (20.00 ft); Jan. 22 (12 p.m.) 17,500 cfs (16.00 ft); Feb. 21 (2 p.m.) 

20,000 cfs (18.05 ft).

* Discharge measurement made on this day.

493801 O - 59 - 36
550 LOST RIVER BASIN

Lost River diversion canal near Olene, Oreg.

acation. Lat 42°09', long 121°40" 

4 miles southwest of Olene.

in SW$ sec. 29, T. 39 S., R. 10 E., on left bank

Records available. May 1912 to September 1956.

Gage.--Staff gages above and below headgates at intake of canal at Lost River Dam, read 

once daily.

Average discharge.--40 years (1912-15, 1919-56), 147 ofs (106,400 acre-ft per year). 

Extremes.--1912-56: Maximum daily discharge, 2,860 cfs Jan. 16, 1956; no flow at times.

Remarks.--Records fair. Discharge computed from daily record of openings and head-on 

gaTes with variable coefficient determined by discharge measurements. Canal diverts 

water from Lost River and discharges into Klamath River to aid in reclamation of Tule 

Lake. Discharge includes water occasionally wasted from "C" Canal flume below intake 

(none during the 1956 water year). Beginning in July 1951, records include pumpage by 

Miller Hill pumping plant which operates at times; during May through August 1956, 

pumpage amounted to 8,110 acre-ft. At times direction of flow is reversed and water 

diverted from Klamath River into Lost River. (See record for Diversion from Klamath 

River to Lost River near Olene).

Cooperation. Records of daily discharge and 20 discharge measurements furnished by Bureau 

of Reclamation; 4 discharge measurements made and records reviewed by Geological 

Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

214

214

209 

204

220

211

190

152

156

151

162

*145

111

£9

101

102

103

129

140

134

129

129

151

154 

150

151

146

140

134

125

134

4,692

151

9,310

Nov.

135

134

141 

*152

178

190

174

158

150

144

133

137

140

133

133

138

139

140

142

231

501

676

370

223 

240

241

248

322

417

334

6,594

220

13,080

Dec.

267

289

310 

287

272

188

248

227

*246

256

256

378

683

825

835

555

490

400

468

1,000

2,100

*2,600

*2,700

2.800 

2,280

1,510

*1,400

1,350

1,040

465

292

27,017

872

53,590

Jan.

240

135

240 

270

265

277

292

282

252

384

*478

593

635

930

2,170

*2.660

2,820

2,240

1,440

1,250

1,430

1,320

1,540

*1,620 

*1,440

911

831

816

820

690

710

30,286

977

60,070

Feb.

744

640

710 

590

695

745

743

775

752

*680

622

533

565

600

545

315

190

286

286

282

425

1,140

1.220

878 

670

594

493

425

411

fl.7,554

605

34,820

Mar.

419

554

969 

950

715

501

*426

1§7

545

740

663

540

405

460

520

493

610

763

»902

1,160

1,370

1,430

*1,600

1,720 

1,980

2.100

*1,860

*1,270

997

1,070

1,170

29,284

945

58,080

Apr.

1,300

1,150

1,080 

1,050

970

1,060

1,020

1,100

1,020

995

1,110

1,380

*1.460

1,340

1,320

1,310

1,250

*1,240

1,220

1,090

925

790

730

695 

625

565

615

788

847

795

30,840

1,028

61,170

May

695

*763

551 

643

702

900

735

685

615

580

558

628

660

650

583

505

280

390

483

512

510

525

498

385 

252

256

289

370

362

368

335

16,328

527

32,390

June

*318

246

236 

248

255

237

179

90

23

0

0

0

0

83

296

327

322

440

517

610

565

410

406

405 

339

83

134

119

125

141

7,154

238

14,190

July

207

292

445 

450

3T7

*304

280

290

300

304

296

371

344

279

326

403

278

166

112

104

145

229

240

161 

150

148

150

245

240

174

165

7,915

255

15,700

Aug.

i§I

277

290 

320

392

392

400

388

398

376

374

382

388

288

266

278

367

348

330

' 327

361

387

396

390 

370

362

352

375

384

386

451

10,962

354

21,740

Sept.

455

455

ft

442

403

331

336

348

*356

366

363

385

386

378

366

304

252

268

409

471

291

290

486 

451

369

333

376

373

428

11,423

381

22,660

Calendar year 1955: Max 2,800 Mln 0 Mean 180 Ac-ft 130,200

Water year 1955-56: Max 2,860 Mln 0 Mean 547 Ac-ft 396,800

* Discharge measurement made on this day.
LOWER KLAMATH LAKE BASIN 551

Antelope Creek near Tennant, Calif.

Location. Lat 41°32'45", long 121°55'05", in NW£ sec. 25, T. 43 N., R. 1 W., on right 

bank 2.5 miles south of Tenant, 4 miles downstream from Frog Lake, and 17 miles southeast of town of Mount Hebron.

Drainage area. 18.8 sq mi.

Records available. May 1952 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 5,( ft (from topographic map).

Extremes. Maximum discharge during year, 422 cfs Dec. 22 (gage height, 3.93 ft), from 

 rating curve extended above 200 cfs on basis of logarithmic plotting; minimum, 5.9 cfs

Dec. 3, 4, but may have been less during periods of ice effect; minimum gage height,

0.79 ft Mar. 12.

1952-56: Maximum discharge, that of Dec. 22, 1955; minimum, that of Dec. 3, 4, 1955.

Remarks.--Records good except those for periods of ice effect, which are poor. No storage 

or diversion above station.

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Dec. 2l)

1.0 

1.2 

1.5 

2.0

Oct. 1 to Dec. 22

5.6 2.5

12 3.0

23 3.5

78

118

169

0.8 

1.0 

1.3 

1.6

2.0

Dec. 22 to Sept. 30

2.5 

3.0 

3.5 

4.0

161

240

330

440

99

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

la

8.1

8.1

8.4

8.8

8.8

8.8

9.2

9.2

12

11

11

10

10

10

9.8

9.8

9.8

9.8

*9.8

9.8

9.8

9.8

9.5

9.8

12

10

10

9.8

9*8

9.8

300.6

9.70

596

Nov.

10

10

10

10

10

10

9.8

9.8

9.8

9.8

9.8

9.5

9.5

1

9

9

9

10

43

49

22

19

16

16

15

15

14

14

14

13

424.0

14.1

841

Dec.

14

13

12

12

13

13

13

13

14

14

14

13

13

13

*13

13

12

10

30

68

140

362

313

166

116

97

77

68

65

56

51

1,841

59.4

3,650

Jan.

49

45

43

42

40

39

33

45

42

39

37

35

34

38

81

83

64

56

52

50

47

46

44

42

40

40

39

36

32

28

24

1,365

44.0

2,710

Feb.

20

18

16

15

17

20

23

*25

25

26

26

26

26

25

23

20

15

16

17

19

51

142

197

188

146

124

87

57

43

1,453

50.1

2,880

Mar.

i±

29

26

24

23

22

23

23

21

20

20

23

20

20

20

20

21

21

22

22

22

24

26

28

31

32

28

28

30

32

31

766

24.7

1,520

Apr.

30

28

28

31

33

34

36

37

40

43

42

40

42

46

49

49

53

54

61

67

77

90

102

115

107

104

95

97

94

94

1,818

60.6

3,610

May

97

103

99

117

123

117

111

108

110

104

100

88

85

89

95

106

121

140

162

185

191

201

212

*202

190

180

162

151

153

164

168

4,234

137

8,400

June

158

147

162

164

132

118

*116

122

134

142

132

124

123

129

114

102

97

95

118

110

97

92

91

86

81

81

84

84

80

li

3,388

113

6,720

July

S3.

65

59

57

54

53

52

52

52

51

50

*47

44

43

40

38

37

37

35

34

33

32

31

31

30

30

28

27

26

26

oc ±2.

1,288

41.5

2,550

Aug.

25

24

24

23

23

22

22

22

22

21

20

20

20

20

20

20

19

19

19

19

19

18

18

18

18

18

18

18

18

18

n

622

20.1

1,230

Sept.

11

17

17

17

17

17

17

17

17

17

17

17

17

17

IS.

16

16

16

17

17

17

16

16

16

16

16

*16

16

16

16

497

16.6

986

Calendar year 1955 : Max 362 Min 8 Mean 24.4 Ac-ft 17.660

Water year 1955-56 : Max 362 Min 8.1 Mean 49.2 Ac-ft 35,690

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 12-18, Dec. 4-9, Jan. 28 to Feb. 9, Feb. 

19 (no gage-height record Feb. 6, 7).
552 LOWER KLAMATH LAKE BASIN

Butte Creek near Macdoel, Calif.

Location. Lat 41°43' , long 122 "00' , in NEv sec. 30, T. 45 N ., R. 1 W., on right bank 

7 miles south of Macdoel and 7.5 miles downstream from Little Antelope Creek.

Drainage area.--178 sq mi.

Records available. September 1921 to June 1922, December 1951 to September 1956.

Gage --Water-stage recorder. Altitude of gage is 4,300 ft (from topographic map).

 iTept. 18, 1921, to June 20, 1922, at site 0.6 mile downstream at different datum.

Extremes.--Maximum discharge during year, 238 cfs Jan. 16 (gage height, 5.42 ft); minimum, 1.1 cfs Dec. 4, but may have been less during periods of ice effect.

1921-22, 1951-56: Maximum discharge, that of Jan. 16, 1956; no flow Dec. 22-25, 

1952.

Remarks.--Records good except those for periods of ice effect, which are poor. A few

 small diversions for irrigation above station. Small inflow above station from 

Antelope Creek during peak stages in December and January.

Rating tables, water year 1955-56, except periods of ice effect (gage height, Ir

feet, and discharge, In cubic feet per second)

(Shifting-control method used Dec. 23)

Oct. 1 to Dec. 22 Dec. 23 to May 24 May 24 to Sept. 30

1.7

1.8

1.9 

2.1 

2.3 

2.7

2.2

120

200

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

3.5

3.3

3.3

3.3

3.3

3.2

2.6

2.6

2.4

277

3.0

2.8

£.7

2.7

2.8

3.3

3.2

3.2

3.2

3.2

*3.2

3.2

2.8

2.8

2.8

3.3

3.6

4.2

4.2

4.4

4.4

99.2

3.20

197

Nov.

.6

.6

.6

.8

.8

.8

.8

.6

.6

.6

.6

 .4

3.5

1

3

3

4

7.9

10

9

7

5

4

5

6

7

8

9.1

8.8

163.1

5.44

324

Dec.

9.4

9.4

8.8

6.8

7.3

12

11

13

11

9.4

9.4

9.4

9.4

9.1

9.1

*8.8

9.1

10

13

18

22

45

167

155

100

70

53

50

45

41

38

989.4

31.9

1,960

Jan.

36

34

33

32

31

30

29

28

28

30

32

36

42

50

92

*193

97

69

62

62

67

59

67

63

50

42

40

35

30

25

20.

1,544

49.8

3,060

Feb.

20

20

20

20

21

22

23

24

*25

26

27

28

29

27

25

23

21

19

18

11

20

*25

20

18

18

18

18

19

20

631

21.8

1,250

Mar.

20

20

20

20

19

18

17

17

17

18

19

20

22

24

24

25

28

30

32

37

*42

45

48

53

56

61

58

48

43

42

44

987

31.8

1,960

Apr.

44

41

37

34

32.

34

34

36

36

38

40

40

40

41

42

45

45

44

44

44

45

47

50

53

58

60

62

59

57

57

1,339

44.6

2,660

May

57

59

61

64

68

72

71

70

68

67

72

72

65

60

61

63

68

70

79

84

87

86

83

*87

11

96

96

91

86

88

90

2,338

75.4

4,640

June

92

91

88

92

11

92

*89

73

70

71

73

76

76

77

82

80

74

68

65

67

68

63

58

55

51

47

44

42

40

39^

2,100

70.0

4,170

July

39

38

35

34

33

32

30

28

26

24

23

22

*22

21

21

20

20

19

19

18

18

18

17

16

16

16

18

18

16

14

13

704

22.7

1,400

Aug.

12

11

11

11

11

11

11

11

12

11

11

11

9.9

9.6

9.0

8.8

8.5

8.2

9.0

9.6

11

11

10

9.9

9.6

9.6

9.3

9.0

8.8

8.5

8.2

311.5

10.0

618

Sept.

8.0

775

7.8

.5

.5

.5

.2

.0

.0

.O

.0

.8

. 8

is

.6

-6

J . '.&6

!e

.5

.2

.2

.2

.0

.2

.0

* .2

.2

.2

7.2

215.0

7.17

426

Calendar year 1955: Max 167 Mln 1.4 Mean 10.9 Ac-ft 7,870

Water year 1955-56: Max 193 Mln 2.4 Mean 31.2 Ac-ft 22,660

* Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by 

Mar. 11.

13-18, 21-28, Dec. 28 to Jan. 12, Jan. 28 to
KLAMATH RIVER BASIN 553

Williamson River near Klamath Agency, Oreg.

Location. Lat 42°44', long 121°50" , in SW^- sec. 1, T. 33 S., R. 7 E,, on right bank

250 "ft downstream from bridge, 0.6 mile southwest of railroad station at Kirk, 10 miles 

upstream from Spring Creek, and 10 miles northeast of Klamath Agency.

Drainage area. 1,290 sq mi, approximately.

Records available. March 1908 to June 1910, October 1954 to September 1956.

Gage. Water-stage recorder. Datum of gage is 4,481.10 ft (revised) above mean sea level, 

cTatum of 1929, supplementary adjustment of 1947. Prior to June 27, 1910, staff gage at 

site half a mile upstream at different datum. Oct. 1, 1954, to Sept. 30, 1955, waterstage recorder at present site at datum 2.05 ft higher.

Extremes. Maximum daily discharge during year, 1,200 cfs Apr. 11-15; maximum gage height, 

5.71 ft Apr. 17; minimum discharge, 1.8 cfs Oct. 3.

1908-10, 1954-56: Maximum daily discharge, 1,590 cfs Mar. 13, 1910, estimated on 

basis of a gage-height record at site 11 miles downstream below Spring Creek; minimum, 

0.1 cfs Sept. 2-12, 1955.

Remarks. Records good except those for periods of no gaga-height record, which are fair. 

Numerous diversions above station; natural regulation by marsh.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

2.3

2.4

2.5

2.6 

2.8 

3.0 

3.2

2.1

3.0

4.4

6.4

12

24

80

185

365

620

1,010

1,520

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9 

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2.6

3.3

3.0

*3.4

7.2

9.7

8.2

11 

9.7 

26

36

46

51

56

61

65

70

74

77

83

87

90

92

94

90

97

101

101

104

101

ill

1,771.1

57.1

3,510

Nov.

ill

127

130

135

140

145

150

*151 

153 

142

133

133

135

135

133

133

133

131

151

188

203

218

218

226

236

268

325

378

396

401

5,666

189

11,240

Dec.

410

410 -414

414

388

313

297

333 

357 

388

410

442

480

495

500

490

460

414

455

485

*560

938

1.010

992

1,010

983

880

912

776

746

808

17,970

580

35,640

Jan.

832

816

832

816

792

776

641

532 

549 

634

683

690

690

662

739

768

784

792

784

792

808

816

*824

718

739

725

683

704

683

676

662

22,642

730

44,910

Feb.

400

400

650

700

Too

600

600

550 

600 

600

550

550

550

550

550

500

500

480

480

480

460

440

420

400

400

380

380

360

360

14,590

503

28 , 940

Mar.

360

340

380

360

320

310

*305

301 

360 

360

360

350

350

420

440

480

480

480

500

550

550

600

650

800

850

850

850

850

900

900

850

16,456

531

32,640

Apr.

900

950

1,000

1,000

1,000

1,000

1,000

1,100 

1,100 

1,100

1.200

1 200

1,200

1,200

1,200

*1,190

1,180

1,170

1,160

1,140

1,120

1,100

1,070

1,050

1,050

1,040

1,010

983

1,020

1,010

32,443

1,081

64,350

May

983

974

974

974

974

1,030

1,060

1,070 

1.080 

1,060

1,050

1,060

1,070

1,070

1,070

1,060

1,030

1,010

983

992

938

904

880

872

840

808

776

760

732

711

704

29,499

952

58,510

June

683

669

662

655

*627

620

596

596 

584 

566

566

549

538

544

532

532

532

516

510

500

495

475

470

450

437

428

424

401

396

585

15,936

531

31,610

July

383

365

361

353

341

337

337

325 

313 

305

301

297

297

289

282

*274

268

257

246

. 240

229

226

215

206

194

185

180

174

166

161

156

8,263

267

16,390

Aug.

149

T46

142

140

137

140

137

131 

127 

123

119

113

110

108

106

102

101

97

95

92

92

87

85

80

77

80

*76

74

70

70

68

3,274

106

6,490

Sept.

66

68

68

68

66

66

65

62 

60 

61

62

65

65

66

65

66

66

70

95

110

117

119

121

123

127

129

131

135

140

146

2,668

88.9

5,290

Calendar year 1955: Max 1,010 Mln 0.1 Mean 223 Ac-ft 161,300

Water year 1955-56: Max 1,200 Mln 2.6 Mean 468 Ac-ft 339,500

* Discharge measurement made on this day.

Note. No gage-height record Nov. 3-7, Feb. 1 to Mar. 6, Mar. 9 to Apr. 15; discharge estimated on 

basis of recorded range In stage, weather records, and records for station below Sprague River near 

Chlloquln.
554 -KLAMATH RIVER BASIN

Sprague River near Beatty, Oreg.

Location. Lat 42°27', long 121 "15', in NW£SE£ sec. 13, T. 36 S., R. 12 E., on right bank 

I? miles east of Beatty and 4 miles upstream from Sycan River.

Drainage area. 513 sq mi.

Records available. April 1912 to September 1926 (fragmentary), October 1953 to September 

I95F:Published as "near Yainax" 1912-17.

Gage.--Water-stage recorder. Datum of gage is 4,305.35 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Apr. 19, 1912, to Feb. 19, 1914, staff gage, 

Feb. 20, 1914, to Sept. 11, 1917, water-stage recorder, and Sept. 12, 1917, to Sept. 30, 

1926, staff gage, at site 2 miles upstream at different datum.

Extremes.--Maximum discharge during year, 3,340 cfs Dec. 23 (gage height, 9.44 ft); minimum, 

116 cfs Oct. 1.

1912-26, 1953-56: Maximum discharge, that of Dec. 23, 1955; minimum, 57 cfs June 30. 

1924, June 20, 1926.

Remarks. Records good except those for periods of backwater from aquatic vegetation, which 

are fair. Diversions for irrigation above station.

Discharge, In Cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

51

Total

Mean

Ac-ft

Oct.

117 

119

120

*121

120

120

120

121

120

132

159

138

157

154

154

138 

138

138

138

138

138

158

136

136

136

139

141

158

156

141

4,100

132

8,130

Nov.

141 

145

145

148

145

142

*142

142

142

148

145

141

154

154

155

150 

155

160

175

242

265

244

205

192

186

196

265

533

238

221

5>346

178

10,600

Dec.

226 

235

222

191

174

206

202

200

204

200

214

356

' 624

700

459

371

365

357

562

873

*1,300

*2,170

5.150

2,270

1,390

1,020

1,140

809

455

385 

594

21,420

691

42,490

Jan.

599 

387

375

383

379

394

410

361

343

401

597

739

729

819

1,680

2.660 

2,020

1,220

948

1,010

1,070

1,010

1,500

*1,110

765

645

575

522

459

466 

373

24,545

792

48,680

Feb.

305 

513

329

349

555

535

317

507

295

289

501

301

339

321

275

206 

251

*254

244

238

501

528

512

465

525

285

267

256

258

9,115

514

18,080

Mar.

258 

281

458

399

289

247

*251

267

349

355

305

256

285

387

429

449 

588

739

922

1,020

 1,100

1,240

1,500

1,460

1,710

1.840

1,750

1,520

1,140

1,210 

1,380

23,940

772

47,480

Apr.

1,400 

1,110

946

"§76 907

1,050

1,060

1,200

1,250

1,560

1,740

2,020

1,740

1,610

1,680

1,780 

*1,780

*1,780

1,810

1,920

2,040

2,140

2,180

2,250

2.500

2,250

2,260

2,090

1,860

1,710

50,179

1,675

99,530

May

1,650 

1,650

1,700

1,760

2.090

2,080

2,060

2,010

1,840

1,710

1,730

1,750

1,480

1,320

1,210

1.200

1,520

1,520

1,650

1,750

1,890

1,990

2,040

2,090

2,040

1,870

1,750

1,610

1,580

1,280 

1,400

52,780

1,705

104,700

June

1.450 

1,550

1,180

1,150

1,280

*1,160

991

874

775

718

715

700

662

672

855

885 

750

615

592

642

588

558

500

475

472

466

452

451

396

399

22,711

757

45,050

July

396 

596

599

375

369

365

565

345

337

355

525

525

557

"361 408

331 

*311

295

287

269

265

256

254

244

244

242

256

265

244

238 

237.

9,690

313

19,220

Aug.

230 

224

227

228

228

247

244

227

224

220

220

215

210

206

205

200 

198

194

197

209

209

204

203

208

206

200

196

191

185

179 

178

6,510

210

12,910

Sept.

173

173

170

170

172

173

172

173

173

167

170

172

173

182

174

163 

160

159

T60

169

170

167

166

176

184

190

186

185

180

176

5,178

175

10,270

Calendar year 1955: Max 5,150 Mln 78 Mean 238 Ac-ft 172,100

water year 1955-56: Max 3,150 Mln 117 Mean 643 Ac-ft 467,100

* Discharge measurement made on this day.

Note. Backwater from aquatic vegetation Oct. 1 to Dec. 12, Feb. 1 to Mar. 18, May 27 to Sept. 30.
KLAMATH RIVER BASIN 555

Sprague River near Chiloquin, Oreg.

Location. Lat 42°35', long 121°51', in NE£ sec. 35, T. 34 S., R. 7 E., on right bank 

l-t miles east of Chiloquin and 4 miles upstream from Modoc Point Canal intake.

Drainage area. 1.580 sq mi, approximately.

Records available. July 1920 to September 1956. Prior to August 1931, published as "at 

McCready Ranch, near Chiloquin."

Gage. Water-stage recorder. Datum of gage is 4,202.43 ft above mean sea level, datum of 

1929, supplementary adjustment of 1947. Prior to Aug. 14, 1931, staff gage at site 

12 miles upstream at different datum.

Average discharge.--35 years (1921-56), 533 cfs (385,900 acre-ft per year).

Extremes.--Maximum discharge during year, 5,490 cfs Apr. 14 (gage height, 6.70 ft); minimum, 

265 cfs Oct. 2.

1920-56: Maximum discharge, 6,650 cfs Apr. 1, 1943 (gage height, 7.47 ft); minimum 

daily, 50 cfs May 26, 27, 1926.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Diversions above station for irrigation; regulation by ponding at irrigation dams.

Revisions (water years) . WSP 1011: 1943(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Backwater from aquatic vegetation July 1-20)

1.6 

8.0 

3.0

265

465

1,150

4.0 

5.0 

7.0

1,990

3,040

6,000

Discharge, In oublo feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26 

27

28

29 

30

51

Total

Mean

Ao-ft

Oct.

885

1F74

878

885

383

898

896

896 

306

315

310

310

320

380

380

315

380

380 

320

380

380

380

380

380

Iff

585

585 

585

325

9,585

509

19,010

NOV.

550 

530

350

550

550

325

325

*325

380 

580

315

320

385

515

515

515

310

340

365 

590

481

488

£14

488

445

405 

595

405

452 

509

11,075

569

81,970

Dec.

515 

488

454

458

426

570

^Eo"5

375

410 

410

421

488

454

538

738

885

878

780

758 

794

*1,070

1,650

8,270

3,930

4,980

5.070 

4,880

a3,200

a8,800 

al,600

al,300

48,438

1,369

84,160

Jan.

al,200 

al,100

1,100

1,130

1,080

1,060

1,060

998

927 

906

843

899

1,050

1,250

1,530

1,960

8,880

4,180

4.330 

3,750

3,080

8,810

2,810

*8,710

8,770

8,690 

3,350

1,950

1,700 

1,490

1,290

58,785

1,896

116,600

Feb.

1.580 

1,080

871

954

985

962

941

976

857 

829

766

759

889

857

857

751

509

682

654 

586

616

710

794

998

1,150

1,100 

962

856

766

24,895

858

49,580

Mar.

784 

758

759

856

941

954

759

*794

724 

766

850

857

794

759

808

954

1,040

1,180

1,330 

1,540

1,770

8,060

8,290

8,570

2,810

3,050 

5,190

5,650

5.860 

5^790

5,510

50,597

1,658

100,400

Apr.

5,580 

5,480

3,650

3,560

3,170

2.960

3,140

3,370

3,700 

4,040

4,840

4,420

5,040

5.440

5,560

5,010

*4,700

a4,600

*4,490 

4,340

4,850

4,280

4,850

4,340

4,480

4,600 

4,800

4,880

4,900 

4,750

127,500

4,250

858,900

May

4,310 

3,890

a5,600

5,390

3,410

3,630

4,000

4,880

4.320 

4,190

4,000

3,750

5,480

3,880

3,160

8,940

8,670

8,440

2,890 

8.840

8,500

8,440

2,560

2,670

2,790

8,910 

3,000

3,000

2,980 

8,900

2, 780

99,540

3,811

197,400

June

2.640 

2,440

8,380

2,870

»8,810

8,140

8,060

8,010

1,970 

1,900

1,780

1,650

1,530

1,490

1,410

1,360

1,550

1,530

1,370 

1,550

1,280

1,190

1,090

1,010

987

871 

889

780

745 

705

45,985

1,555

91,810

July

661 

654

616

604

598

598

580

568

544 

558

558

532

532

586

586

550

550

558

504 

498

498

476

465

476

470

454 

448

448

458 

443

458

16,847

584

32,280

Aug.

«

481

416

410

405

405

410

421 

481

421

410

405

405

400

400

395

395

395 

395

395

400

400

400

595

595 

400

*400

595 

590

365

13,544

405

84,860

Sept.

380 

575

370

370

570

565 sfB"

570

570 

570

570

365

365

565

565

565

370

365

580 

585

580

575

375

380

375

380

585

595

595 

395

11,235

374

28,500

Calendar year 1955; Max 5,070 Mln 185 Mean 488 Ao-ft 555,200

Water year 1955-56: Max 5,440 Mln 274 Mean 1,595 Ac-ft 1,012,000

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of weather records and records for station 

near Beatty and Wllllamson River below Sprague River, near Chiloquin.
556 KLAMATH RIVER BASIN

Williamson River below Sprague River, near Chiloquin, Oreg.

Location. --La t 42°34', long 121°52 I , in sec. 3, T. 35 S., R. 7 E. , on left bank a quarter 

of a mile downstream from Sprague River and three-quarters of a mile southwest of 

Chiloquin.

Drainage area. 3,000 sq mi, approximately. 

Records available .--June 1917 to September 1956.

Gage . Water-stage recorder. Datum of gage is 4,155.55 ft above mean sea level, datum of 

1929. Prior to Aug. 31, 1923, water-stage recorder at same site at different datum.

Average discharge . 39 years, 963 cfs (697,200 acre-ft per year).

Extremes . Maximum discharge during year, 6,480 cfs Apr. 14 (gage height, 7.09 ft); minimum, 

605 cfs Oct. 2.

1917-56: Maximum discharge, 7,660 cfs Apr. 1, 1943 (gage height, 7.29 ft); minimum, 

320 cfs Oct. 14, 1920.

Remarks . Records good except those for periods of no gage-height record, which are fair. 

Diversions above station for irrigation. Some regulation by irrigation diversion dams 

and log-pond operations on Sprague River.

Revisions (water years) .--WSF 981: 1938(M) .

Rating tables, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Mar. 28-31)

Oct. 1 to Mar. 31

2.4 605

1,140

2,240

6,800

Apr. 1 to Sept. 3O

7.0

2.6 

3.0 

4.0

8.0

775

1,120

2,180

7,900

Discharge, in cubic feet pe econd, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

639

614

630

639

639

639

656

656

664 

699

699

708

726

726

744

762

762

771

771

780

780

780

780

789

789

789

789

798

798

807

816

22,639

730

44,900

Nov.

816

816

843

*843

843

852

861

852

852. 

861

843

834

843

825

774

789

825

969

924

978

996

1,090

1,130

1,100

1,070

1,050

1,100

1,140

1,200

1,300

28,219

941

55,970

Dec.

1,330

1,280

1,240

1,230

1,220

1,100

1,090

1,070

1,140 

1,160

1,200

1,330

1,340

1,410

1,590

1,770

1,780

1,650

1,630

1,690

2,030

*2,950

3,510

4,980

5,930

6,180

5,360

4,050

3,030

2,620

a2,500

70,390

2,270

139,600

Jan.

a2,400

a2,350

2,320

2,320

2,280

2,250

2,190

2,000

1,850 

1,930

1,930

2,000

2,180

2,340

2,700

3,150

3,910

5,230

5.550

4,970

4,370

4,160

*4,160

3,930

4,020

3,960

a3,300

a3,000

a2,700

2,490

2,200

94,120

3,040

186,700

Feb.

2,040

1,780

1,820

1,960

1,990

1,890

1,870

*1,820

1,750 

1,750

1,670

1,650

1,700

1,760

1,750

1,580

1,570

1,500

1,470

1,410

1,430

1,500

1,550

1,740

1,840

1,820

1,700

1,540

1,470

- _---__

49,120

1,694

97,430

Mar.

1,400

1,410

1,450

1,520

1,600

*1,540

1,590

1,480

1,410 

1,450

1,530

1,550

1,530

1,480

1,560

1,690

1,840

1,980

2,140

2,390

2,660

3,020

3,370

3,690

4,000

4,160

4,400

4,690

4,970

4,890

4,590

76,780

2,477

152,300

Apr.

4,500

4,630

4,770

4,710

4,500

4,570

4,490

4,700

4,970 

5,260

5,510

5,660

6,140

6,480

6,470

*6,200

5,980

5,100

5,030

5,600

5,520

5,450

5,450

5,510

5,580

5,720

5,880

6,080

5,960

5,820

162,040

5,401

321,400

May

5.460

5,060

4,710

4,640

4,650

4,770

5,090

5,400

5,460 

5,340

5,140

4,900

4,700

4,570

4,490

4,280

4,010

3,790

3,620

5,520

5,550

3,620

3,700

3,800

3,880

3,980

4,010

4,000

3,940

3,860

3,770

135,670

4,376

269,100

June

3,600

3,420

3,290

3,240

*3,160

3,090

3,020

2,960

2,900 

2,830

2,810

2,540

2,420

2,360

2,300

2,250

2,220

2,240

2,230

2,190

2,080

1,990

2,040

1,830

1,740

1,680

1,630

1,580

1,520

1,480

72,620

2,421

144,000

July

1,440

1,400

1,380

1,350

1,350

1,300

1,280

1,270

1,240 

1,210

1,190

1,200

1,210

1,190

1,190

1,190

*1,190

1,160

1,140

1,120

1,100

1,080

1,070

1,070

1,040

1,010

1,000

988

979

979

970

36,266

1,170

71,930

Aug.

945

936

928

920

911

920

920

928

928 

928

911

902

886

877

877

868

868

860

860

868

868

868

868

868

852

852

860

*852

834

826

8~2TT

27,415

884

54,380

Sept.

818

809

800

800

800

800

800

800

792 

792

800

800

800

800

800

800

809

809

834

868

868

868

877

877

886

894

911

920

920

928

------

25,080

836

49,750

Calendar year 1955: Max 6,180 Min 478 Mean 1,059 Ac-ft 766,600

Water year 1955-56: Max 6,480 Min 614 Mean 2,187 Ac-ft 1,587,000

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 

near Klamath Agency and Sprague River near Chiloquin.

feather records and records for station
KLAMATH RIVER BASIN 557

Cascade Canal near Pish Lake, Oreg.

Location. Lat 42°24', long- 122°16 ' , in SE£ sec. 30, T. 36 S., R. 5 E., on left bank at 

divide between Rogue River and Klamath River basins, 3 miles upstream from Pish Lake 

and 10 miles downstream from point of diversion.

Records available. --June 1924 to September 1956 (irrigation seasons only, 1956 fragmentary ) .

Gage. --Water-stage recorder. Altitude of gage is 5,235 ft (by barometer). Prior to 

May 26., 1926, staff gage at same site and datum. May 26, 1926, to June 26, 1954, 

water-stage recorder at datum 0.39 ft lower.

Extremes. --1924-56: Maximum daily discharge, 58 cfs July 25, 26, Aug. 8-10, 1955; no 

flow at times.

Remarks . --Records fair. Water stored in Pourmile Lake was not released to canal during 

the year, but runoff from melting snow was intercepted and diverted. Canal diverts 

water from Pourmile Creek, in Klamath River basin, and discharges into lava bed 

12 miles above Pish Lake, in Rogue River basin. Entire flow sinks in lava bed, reappearing in springs at head of Fish Lake.

Cooperation . Occasional staff gage readings made by employee of Medford Irrigation 

District.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June

_

-

-

-

-

_

-

_

_

-

_

-

_

12

-

_

_

_

_

-

_

_

5.1

_

-

.

2.9

_

-

-

_

_

-

July

_

-

-

1.0

-

1.0

-

.8

_

.7

_

.5

_

.5

-

_

_

_

_

0

.

-

_

_

-

_

_

_

-

"

"

_

_

-

Aug. Sept.

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft
558 KLAMATH RIVER BASIN

"A" Canal at Klamath Palls, Oreg.

Location. Lat 42°14', long 121°48', in NE£ sec. 30, T. 38 S., R. 9 E., on left bank 

300 ft downstream from headgates of canal and 1 mile northwest of Klamath Palls.

Records available. October 1910 to September 1956.

Gage. Water-stage recorder. Datum of gage is 4,126.22 ft above mean sea level, Bureau of 

Reclamation datum (levels by Bureau of Reclamation). Prior to May 1, 1923, water-stage 

recorder at site three-quarters of a mile upstream at head of tunnel and at different 

datum. May 1, 1923, to Apr. 20, 1924, water-stage recorder a quarter of a mile upstream Just below tunnel at different datum. Apr. 21, 1924, to Apr. 14, 1925, inclined 

gage at present site and datum.

Average discharge. 46 years, 220 cfs (159,300 acre-ft per year).

Extremes. 1910-56: Maximum daily discharge, 1,120 cfs June 22-24, 1953, July 17, 20, 

1954; no flow at times.

Remarks.--Records good. Canal diverts water from Upper Klamath Lake in NE^ sec. 30, T. 

38 S., R. 9 E., for irrigation of lands east of Klamath River on both sides of Lost 

River. Most of return water reaches Lost River.

Cooperation. Gage-height record, nine discharge measurements, and computation of daily 

discharge furnished by Bureau of Reclamation; records reviewed by Geological Survey.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

441

435

445

452

455

428

355

68

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

0

3,074

99.2

6,100

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

.-. 

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

25

40

45

45

45

61

93

172

*291

357

394

37T

353

361 

377

3,030

101

6,010

May

*415

509

563

536

420

334

302

285

278

269

252

254

260

283

300

352

459

589

674

732

820

897

*964

997

395

975

917

904

918 

932

877

18,262

589

36,220

June

893

878

875

851

788

750

736

740

760

750

816

997

1,050

978

870

761

710

706

678

631

653

*710

717

692

743

877

974

1,030

1.060 

1,060

24,740

825

49,070

July

989

921

911

907

918

932

918

931

961

980

911

894

911

901

851

852

*919

963

992

1,030

1,010

973

981

1,030

1.060

1,060

1,030

985

938 

935

*981

29,575

954

58,660

Aug.

991

963

911

869

837

883

905

866

845

816

833

802

813

823

' 826

805

759

724

721

747

771

*752

726

739

749

708

736

763

756 

729

704

24,872

802

49,330

Sept.

719

736

739

725

715

713

699

683

643

645

*653

643

626

583

567

572

*575

592

580

536

497

474

451

433

441

453

455

405

364 

367

17,284

576

34,280

Calendar year 1955: Max 1,100 Mln 0 Mean 369 Ac-ft 267,400

Water year 1955-56: Max 1,060 Mln 0 Mean 330 Ao-ft 239,700

Discharge measurement made on this day.
KLAMATH RIVER BASIN 559

Upper Klamath Lake near Klamath Palls, Oreg.

Location. Lat 42°15', long 121°48', in SW£ sec. 19, T. 38 S., R. 9 E., at southeast end

 oTTake, 1 mile upstream from outlet and 2 miles northwest of Klamath Palls.

Drainage area. 3,810 sq mi, approximately. 

Records available.--May 1904 to September 1956.

Gage Water-stage recorder. Datum of gage is 4,098.22 ft above mean sea level, datum of 

"1929, or 4,100 ft above mean sea level, datum of Bureau of Reclamation. Gage readings 

have been reduced to elevations above Bureau of Reclamation datum. May 28, 1904, to 

Dec 31, 1905, staff gage at Pelican Bay, at datum 37.78 ft higher, Jan. 7 to Feb. 15, 

1906, staff gage, Feb. 16, 1906, to June 16, 1918, water-stage recorder, and June 17, 

1918, to Nov. 9, 1923, staff gage, at Buena Vista landing at datum 36.13 ft higher.

Extremes. Maximum elevation during year, 4,143.75 ft May 30; maximum daily, 4,143.23 ft

 June 4; minimum, 4,139.08 ft Oct. 10; minimum daily, 4,139.42 ft Oct. 9.

1904-56: Maximum elevation recorded, 4,144.98 ft about Apr. 20, 1904, from highwater marks; minimum recorded, 4,135.55 ft Oct. 30, 1944.

Remarks. Reservoir is formed by concrete dam at outlet of natural lake, completed in 

1921, replacing a temporary dam built in 1919; storage began Apr. 15, 1919. Capacity, 

584,000 acre-ft between elevations 4,135.0 and 4,143.3 ft. Dead storage below elevation 4,135 ft not known; lake level ordinarily maintained between elevations 4,137 ft 

(contents, 118,600 acre-ft) and 4,143.3 ft. Water stored may be diverted through 

"A" Canal for irrigation of land under Klamath project of Bureau of Reclamation, or 

released to Link River through dam or powerplants at Klamath Falls. Area of lake at 

high stages is partly controlled by diking. Lake elevations, particularly extremes, 

are very much affected by wind. Contents given herein represent those above elevation 

4,135 ft.

Cooperation. Capacity table furnished by The California Oregon Power Co. 

Revisions (water years). WSP 1061: 1944.

Mean elevation In feet, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17

18 

19

20

21 

22

23 

24 

25

26

27

28

29

30

31

(t)

(*)

Oct.

39.55 

39.55

39.51 

39.53

39.61

39.59

39.54

39.45

39.42 

39.72

39.66

39.71

39.73

39.73

39.80

39.82

39.80

39.80 

39.84

39.88

39.86 

39.90

39.89 

39.86 

39.82

39.96

39.84

39.93

39.81

40.05

39.83

295,500

+21,300

Nov.

39.89 

39.84

39.83 

39.81

39.87

39.89

39.92

39.91

39.92 

40.12

40.18

40.03

39.86

40.09

39.90

39.91

39.96

39.94 

40.01

40.14

40.23 

40.16

40.16 

40.19 

40.21

40.23

40.34

40.37

40.40

40.3?

339, 700

+44, 200

Dec.

40.53 

40.56

40.59 

40.62

40.55

40.69

40.66

'40.59

40.69 

40.69

40.67

40.66

40.81

40.87

40.78

40.76

40.75

40.57 

40.71

40.83

40.73 

41.13

41.47 

41.19 

40.67

41.35

41.86

42.07

42.07

41.94

41.86

459,300

 fU.9,600

Jan.

41.84 

41.81

41.78 

41.67

41.79

41.24

4T77T

41.68

41.64 

41.59

41.55

41.50

41.48

41.48

41.56

41.69

41.72

41.77 

41.86

41.95

42.02 

42.10

42.18 

42.31 

42.45

42.40

42.33

42.34

42.32

42. 31

42! 29

491,700

+32,400

Feb.

42.26 

42.23

42. 2O 

42.35

42.14

42.11

42.09

42.07

42.07 

42.18

42.08

42.09

42.11

42.18

42.41

42.14

42.15

42.14 

42.15

42.16

42.23 

42.33

42.30 

42.27 

42.28

42.24

42.22

42.15

42.13

477,700

-14,000

Mar.

42.07 

41.99

42.09 

41.97

41.96

41.89

41.83

41.81

41.82 

41.75

41.68

41.63

41.66

41.55

41.48

41.45

41.43

41.40 

41.43

41.27

41.05 

41.31

41.30 

41.37 

41.39

41.61

41.54

41.63

41.60

41.60

41.74

444,600

-33,100

Apr.

41.87 

41.81

41.76 

41.84

41.83

41.80

41.91

41.84

41.87 

41.86

41.88

42.08

42.07

42.16

42.13

42.23

42.31

42.37 

42.30

42.31

42.34 

42.44

42.49 

42.43 

42.42

42.49

42.69

42.68

42.65 42 * 68

526,000

+81,400

May

42.68 

42.65

42.63 

42.74

42.76

42.85

42.97

42.96

43.08 

43.06

43.09

43.08

43.03

43.04

43.04

43.05

43.04

43.05 

43.04

43.07

43.03 

42.99

43.04 

43.14 

42.99

43.18

43.03

42.99

43.01

43.09

43.09

564, 800

+38,800

June

43.07 

43.13

43.16 

43.23

43.12

43.06

43.10

43.18

43.16 

43.19

43.09

43.07

42.99

43.12

43.10

43.09

42.97

42.90 

43.09

43.01

42.96 

43.03

43.09 

43.03 

42.95

42.98

42.97

42.99

43.03 42 97

_ - 1

551,100

-13,700

July

43.01 

42.85

42.82 

42.79

42. 81

42.74

42.74

42.73

42.69 

42.70

42.65

42.58

42.54

42.62

42.63

42.65

42.63

42.65 

42.52

42.51

42.52 

42.51

42.47 

42.44 

42.44

42.40

42.34

42.38

42.36

42.34

42.37

496,000

-55, 100

Aug.

42.44 

42.25

42.15 

42.18

42.19

42.14

42.14

42.16

42.12 

42.12

42.06

41.94

41.91

41.92

41.90

41.94

41.92

41.93 

41.83

41.80

41.76 

41.74

41.78 

41.77 

41.84

41.79

41.73

41.68

41.69

41. 62

ALJjfi

436,800

-59,200

Sept.

41.60 

41.65

41.68 

41.61

41.53

41.46

41.33

41.30

41.25 

41.26

41.47

41.40

41.42

41.33

41.33

41.31

41.27

41.23 

41.30

41.50

41.30 

41.36

41.30 

41.28 

41.25

41.33

41.29

41.25

41.23

41.24

399,400

-37,400

Calendar year 1955.................... * +187,700

Water year 1955-56.................... * +125,200

t Contents, in acre-feet, at end of month obtained averaging elevations for last 3 days of month 

and first 3 days of following month to compensate for wind effect. 

* Change in contents, In acre-feet. 

Note. Add 4,100.00 ft to obtain elevation above mean sea level, Bureau of Reclamation datum.
560 KLAMATH RIVER BASIN

Link River at Klamath Falls, Oreg.

Location. Lat 42°13', long 121°48' , in NW^ sec. 32, T. 38 S., R. 9 E., on left bank

600 ft upstream from outlet of Keno Canal and three-eighths of a mile above Main Street 

Bridge at Klamath Falls.

Drainage area. 3,810 sq mi, approximately (including Crater Lake basin).

Records available. May 1904 to September 1956.

water-stage recorder, staff and chain gages at several sites within half a mile of 

present site at various datums. Sept. 14, 1912, to Nov. 23, 1923, water-stage recorder 

at site 600 ft downstream at datum 1.19 ft lower.

Average discharge. 52 years, 1,590 cfs (1,151,000 acre-ft per year).

Extremes. Maximum discharge during year, 6,200 cfs Apr. 17; minimum daily, 300 cfs 

Sept. 22.

1904-56: Maximum discharge, 9,400 cfs May 12, 1904 (gage height at bridge, 7.30 ft); 

minimum daily, 17 cfs Dec. 13, 1937.

Remarks. Records good. Regulation since April 1919 by Upper Klamath Lake. Water diverted above station by main or "A" Canal of Klamath project (see p. 558 ). Other 

small diversions above lake. All records presented herein include flow in Keno Canal 

which since August 1923 has diverted from Upper Klamath Lake at Link River dam, 4,800 

ft above station, for power generation and returns flow to Link River 600 ft below 

station.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

1

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

449

452

458

454

464

495

460

449

454

536

456

582

719

723

738

696

786

827

1,060

1,040

981

970

1,150

1,160

1,190

1,230

1,230

1,270

1,480 

1,490

1,460

25,909

836

51,390

Nov.

1,460

1,460

*1,460

1,460

1,460

1,490

1,480

1,490

1,490

1,500

1,490

1,490

1,460

1,500

1,490

1,660

1,980

1,960

1,590

1,490

1,510

1,140

1,000

1,180

1,480

1,470

1,500

1,500

1,510 

1,490

44,640

1,488

88,540

Dec.

1,500

1,490

1,500

2,060

2,460

2,470

2,450

 2,430

2,460

2,460

2,460

2,340

2,540

2,380

2,180

2,050

2,290

2,400

2,520

*2,590

2,490

2,660

2,690

2,640

2,740

3,480

4,150

4,550

4,680 

5,050

5,480

85,640

2,763

169,900

Jan.

5,450

5,390

5,450

5,520

5,520

5,130

5,520

5,530

5,520

5,490

5,480

5,430

5,430

5,400

4,720

4.010

4,020

4,020

4,020

4,260

4,530

4,870

5,260

5,390

*5,360

5,260

5,300

5,530

5.850 

5,820

5,350

159,830

5,156

317,000

Feb.

4,710

4,660

4,630

4,820

4,900

4,900

4,420

3,160

2,680

2,740

2,590

2,600

2,560

2,370

2.190

2,240

2,240

2,240

2,240

2,290

2,740

3,830

4,540

4,530

4,500

4,500

4,610

5,220

5.480

105,130

3,625

208,500

Mar.

5.350

5,110

5,040

4,840

4,790

*4,820

5,010

5,150

5,190

5,040

4,820

4,870

5,120

5,050

4,870

4,840

4,820

4,820

4,660

4,380

4,100

4,110

4,100

4,080

3,880

3,790

5.760

4,310

4,960 

5,190

5,330

146,200

4,716

290,000

Apr.

5,500

5,410

5,390

5,440

5,410

5,360

5,480

5,420

5,440

5,420

5,470

5,660

5,770

5,760

5,760

5,920

5.980

*5,770

5,420

5,270

4.910

4,960

5,020

4,990

4,940

5,200

5,800

5,800

5,860 

5,950

164,480

5,483

326,200

May

5,830

5,210

4,640

4,360

4,210

4,290

4,550

5,010

5,220

5,620

5,760

5.970

5,970

5,760

5,350

5,320

5,300

5,320

5,320

5,360

5,120

4,560

4,140

3,630

3,410

3,180

3,150

2,990

2,660 

2,660

2,690

142,560

4,599

282,800

June

2,670

2,670

2,670

2,690

2,940

3,230

*3,200

3,200

3,230

3,230

3,020

2,900

2,580

2,440

2,800

5.500

3,500

2,850

2,590

2,450

2,220

1,990

1,590

1,590 i.seo

1,580

1,660

1,780

1,780 

1,800

75,510

2,517

149,800

July

1.790

1,680

1,510

1,510

1,470

1,480

1,470

1,470

1,470

1,480

1,480

1,100

754

498

1,600

1,310

1,000

1,000

1,050

1,140

1,140

1,120

1,100

1,060

1,080

1,080

1,090

1,090

1,090 

1,080

1,090

38,262

1,234

75,890

Aug.

1,100

1,110

1,150

1,130

925

872

1,180

1,180

1,170

1,160

1,160

1,150

1,150

1,150

1,150

1,140

1,150

1,140

1,140

1,150

1,120

1,120

1,110

1,110

1,110

1,110

1,110

1,110

1,110 

*1,110 

1,110

54,607

1,116

68,640

Sept.

1,110

1,110

1,130

1,150

1,150

1,130

1,050

1,080

1,120

1,270

1,210

1,040

1,260

1,180

1,200

1,290

1,480

1,490

1,500

1,500

1,300

500

576

1,480

1,480

1,760

1.960

1,950

1,950 

1,950

59,096

1,303

77,550

Adjusted for diversion by "A" Canal

Mean 

Ac-ft

935 

57,490

1,488 

88,540

2,765 

169,900

5,156 

317,000

3,625 

208,500

4,716 5,585 

290,000 532,200

5,188 5,343 

319,000 198,900

2,189 1 

134,600 118

919 1,879 

000 111,800'

Observed

Calei 

Watei

idar year 1955: Max 5,480 Mln 263 

- year 1955-56: Max 5,980 Min 300

Mean 1,154 Ac-ft 835,800 

Mean 2,901 Ac-ft 2,106,000

Adjusted

Calendar year 1955: Mean 1,524 Ac-ft 1 

Water year 1955-56 : Mean 3,232 Ac-ft 2

,105,000 

,546,000

Discharge measurement made on this day.
KLAMATH RIVER BASIN 561

Diversion from Klamath River to Lost River, near Olene, Oreg.

Location. Lat 42°09', long 121°42« 

5 miles southwest of Olene.

in SW£ sec. 30, T. 39 S., R. 10 E., on right bank

Records available. April 1931 to September 1956.

Gage. Staff gage read once daily.

Average discharge. 26 years, 33.9 cfs (24,540 acre-ft per year).

Extremes. 1931-56: Maximum daily discharge, 719 cfs Apr. 15, 1951; no flow at times.

Remarks. Records fair. Discharge computed from daily record of gate openings and gage 

readings at wasteway with coefficients applied based on discharge measurements. Canal 

was built to divert water from Lost River to Klamath River and thereby aid in reclamation of Tule Lake. (See record for Lost River diversion canal near Olene, preceding 

page). Beginning in April 1931, water has been diverted at times from Klamath River 

and released into drain which empties into Lost River, from which it is re-diverted for 

irrigation of lands near Tule Lake. Beginning in June 1949, figures of discharge include pumpage by Miller Hill pumping plant, which operates at times; during June, 1956, 

pumpage amounted to 303 acre-ft.

Cooperation. Records furnished by Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0

0

0

Nov.

0

0

O

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

May

0

0

0

June

0

(3

0

0

0

0

0

0

0

56

m70

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 

0

349

11.6

692

July

0

0

0

Aug.

0

0

0

Sept.

0

0

0

Calendar year 1955: Max 545 Mln 0 Mean 53.1 Ao-ft 38,410

Water year 1955-56: Max 113 Mln 0 Mean i.o Ao-ft 692
562 KLAMATH RIVER BASIN

Klamath River at Keno, Oreg.

Location. Lat 42°08', long 121°58', in SE£ sec. 35, T. 39 S., R. 7 E., on left bank 

2 miles west of Keno and 5 miles upstream from Spencer Creek.

Drainage area. 3.920 sq mi, approximately (not including Lost River of Lower Klamath Lake 

basins).

Records available. June 1904 to December 1913, January 1930 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 3,970 ft (from river-profile map). Prior 

to Jan. 1, 1914, staff gage at site 2 miles upstream at different datum. Jan. 28 1930 

to July 26, 1932, water-stage recorder at site 20 ft downstream at datum 2.72 ft higher. 

July 27, 1932, to Nov. 5, 1954, water-stage recorder at site 5 ft upstream, at datum 

0.72 ft higher.

Average discharge. 35 years, 1,654 cfs (1,197,000 acre-ft per year).

Extremes. Maximum discharge during year, 7,150 cfs Jan. 25 (gage height, 11.00 ft)- minimum, 26 cfs Sept. 23 (gage height, 2.05 ft); minimum daily, 594 cfs Oct. 1.

1904-13, 1930-56: Maximum discharge, that of Jan. 25, 1956; minimum, that of 

Sept. 23, 1956; minimum daily, 60 cfs May 19, 1934.

Remarks. Records excellent. Diversions above station for irrigation. Lost River diversion canal enters or diverts from Klamath River above station. (See records for Lost 

River diversion canal near Olene and diversion from Klamath River to Lost River near 

Olene.) Diversions through Midland Canal beginning July 1, 1947, to Klamath Drainage 

District and through Klamath Strait into Lower Klamath Lake were computed by Bureau of 

Reclamation from gate openings at Midland and Ady. Pumpage into Klamath River at Ady 

was computed by Bureau of Reclamation from hours of pump operation. Plow regulated bv 

dam at outlet of Upper Klamath Lake since 1919 and by low dam on Klamath River at Keno 

since September 1931.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

4.4

6.0

8.0

11.0

585

1,490

3,230

-L-L . V 7,150 l f J.3V

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6

7

8

9

10

11

12

15 

14 

15

16 

17 

18 

19

20

21

22

25

24

25

26

27 

28

29 

30

31

 total

Mean

Cfsm

ft)

(*)

Oct.

594 

616

695

780

780

775

770

765

755

755

750

740

735 

735 

730

750 

896 

1,080 

1,090

1,090

1,110

1,110

1,250

1,440

1,420

1,390

1,400 

1,500

1,620 

1,620

1,620

31,521

1,010

62,120

722

2,210

Nov.

1,640 

1,650

 1,620

1,590

1,600

1,620

1,620

1,620

1,610

1,580

1,570

1,58(5

1,610 

1,600 

1,620

1,800 

2,110 

2.120 

1,840

1,640

1,700

1,910

1,880

1,790

1,870

1,910

1,880 

1,870

1,870 

1,870

52,170

1,739

103,500

1,330

2,550

Dec.

1,860 

1,870

1,880

2,360

2,840

2,840

2,840

2,820

2,840

2,840

2,840

2,820

2,930 

5,160 

5,200

5,030 

2,760 

2,730 

2,780

3,300

4,440

5,440

5,640

5,660

5,810

5.850

5,740 

5,440

5,620 

5,280

5,600

115,060

3,712

228,200

6,840

6,440

Jan.

5,670 

5,700

5,700

5,810

5,920

5,840

5,900

5,950

6,010

6,010

6,110

6,230

6,180 

6,270 

6,680

6,700 

6,700 

6,750 

6,480

6,300

6,370

6,460

6,790

7,020

7.080

*6,910

6,720 

6,580

6,620 

6,670

6,600

196,710

6,345

390,200

9,7,50

16,740

Feb.

6,110 

6,100

6,000

6,000

5,920

5,940

5,900

5,130

5,960

3,750

3,700

3,470

3,460 

3,350 

3,160

5,100 

2,930 

2,820 

2,750

2.740

3,100

4,790

5,980

5,970

5,800

5,660

5,570 

5,690

5,990

-----

134,840

4,650

267,500

4,810

16,050

Mar.

6,110 

6,090

6,090

6,220

6,090

 5,940

5,900

5,950

6,020

6,220

6,180

5,990

5,940 

6,120 

5,900

5,880 

5,990 

5,990 

6,040

6,110

6,120

6,090

6,080

6,190

6,300

6,350

6,340 

6,160

6,180 

6,300

5,560

189,420

6,110

375,700

2,580

18,200

Apr.

6,730 

6,780

6,720

6,670

6,720

6,700

6,640

6,760

6,760

6,740

6,670

6,780

6,880 

6,920 

7,000

7,030 

7.060 

7,060 

 6,920

6,840

6,520

6,220

6,020

5,970

5,910

5,770

5,970 

6,230

6,390 

6,440

-----

197,820

6,594

392,400

1,660

17,140

May

6,400 

6,250

5,920

5,620

5,580

5,540

5,540

5,550

5,610

5,800

6,020

6,200

6,400 

6,420 

6,250

6,060 

5,920 

5,810 

5,810

5,810

5,840

5,570

5,150

4,740

4,320

5,200

5,270 

3,610

3,260 

3,100

5,070

163,000

5,258

323,300

2,690

17,780

June

3,140 

5,250

5,140

5,110

5,500

5,560

*5,500

5,270

5,200

3,140

3,090

2,870

2,590 

2,390 

2,840

3,550 

5.780 

5,480 

3,230

3,250

3,140

2,760

2,220

2,080

1,880

1,550

1.520 

1,810

1,970 

1,930

------

84,520

2,817

167,600

4,480

13,230

July

1,950 

1,930

1,950

2,010

1,910

1,790

1,750

1,750

1,740

1,720

1,750

1,480

2.140 

2,080 

1,520

878 

1,510 

1,210 

 1,040

1,050

1,050

1,140

1,250

1,270

1,210

1,150

1,240 

1,540

1,550 

1,530

1,260

46,248

1,492

91,730

6,210

14,860

Aug.

1,210 

1.170

1,250

1,590

1,250

1,520

1,640

1,600

1,570

1,510

1,500

1,620

1,620 

1,660 

1,620

1,470 

1,550 

1,590 

1,420

1,490

1,640

1.710

1,690

1,660

1,560

1,550

1,550 

1,550

1,560 

1,610

 1,640

46,290

1,495

91,810

5,410

12,300

Sept.

1,660 

1,670

1,680

1,680

1,740

1,650

1,620

1,680

1,640

1,640

1,620

1,550

1,690 

1,690 

1,680

1,800 

1,950 

1,900 

1,910

1,950

2,050

 755

 715

2,070

2,050

2,220

2,530 

2,340

2,560 

2,580

------

55,586

1,786

106,500

1,650

7,580

Calendar year 1955 : Max 5,850 Mln 450 Mean 1,256 Ac-ft 909,400

Water year 1955-56 : Max 7,08O Mln 594 Mean 3,582 Ac-ft 2,600,OOO

* Discharge measurement made on this day.

t Diversion at Ady (acre-feet). Total for calendar year 1955, 69,920 aore-ft; for water year 1956, 

47,950 acre-ft.

* Pumpage at Ady (acre-feet). Total for calendar year 1955, 61,840 acre-ft; for water year 1956, 

145,100 acre-ft.
KLAMATH RIVER BASIN 563

Pall Creek at Copeo, Calif.

Location. Lat 41*58', long 122°22', in NE£ sec. 36, T. 48 N., R. 5 W., on right bank 1,500 

ft upstream from mouth and 0.8 mile south of Fall Creek powerplant and Copco Post 

Office.

Drainage area. 20 sq mi, approximately. 

Records available.--July 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 2,362.77 ft above mean sea level, datum of 

T929, supplementary adju'stment of 1947. Prior to Dec. 16, 1937, staff gage 1,000 ft 

downstream at different datum. Dec. 16, 1937, to Aug. 23, 1949, staff gage at present 

site and datum.

Average discharge.--28 years, 37.7 cfs (27,290 acre-ft per year).

Extremes.--Maximum discharge during year, 875 cfs Dec. 22 (gage height, 4.35 ft), from 

rating curve extended above 90 cfs on basis of slope-area determinations at gage heights 

2.42 and 4.35 ft; minimum, 35 cfs Oct. 18; minimum daily, 38 cfs Oct. 22-25.

1928-56: Maximum discharge, that of Dec. 22, 1955; minimum, 3.6 cfs Sept. 13, 1953; 

minimum daily, 24 cfs for many days during June to September 1937.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Two small diversions above station for irrigation of about 100 acres. Power company 

diverts about 4 cfs to Pall Creek (above station) from Spring Creek (tributary to Jenny 

Creek). Occasional diurnal fluctuation caused by powerplant.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

1.2 

1.5 

2.0

32

59

117

2.5 

3.0 

3.6

196

305

500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

40 

40

40

40

40

40

40

40

40

M

41

41

41

41

41

41

40

40

40

39

39

ft

38

38

39

40

40

40

40

40

1,238

39.9

2,460

NOV.

t°j

40

40

40

40

40

40

40

39

40

40

41

40

40

41

42

42

54

fii

56

*46 

46

46

45

46

53

50

48

47

1,346

44.9

2,670

Dec.

71 

54

48

46

52

58

52

61

69

60

60

59

58

54

50

51

53

73

129

86

247

"IB

124

94

87

78

870

64C-l

Dl

59

2,846

91.8

5,640

Jan.

58

*5"9"

74

67

61

66

64

60

63

68

64

80

134

249

149

115

106

109

115

98

147

141

110

99

90

31

74

69

65

63

2,855

92.1

5,660

Feb.

61 

58

58

58

58

»58

57

57

57

57

57

58

58

57

56

li

a55

aSO

a70

allO

a200

112 

91

79

73

71

69

69

68

2,046

70.6

4,060

Mar.

70 

73

80

73

69

68

65

69

72

#67

65

63

34

65

66

67

69

70

71

72

73

76 

78

82

87

87

85

82

81

fll ol

82

2,272

73.3

4,510

Apr.

80 

77

73

73

72

72

72

72

72

77

78

76

74

73

73

73

72

71

70

69

69

68 

67

66

66

65

*65

64

2,125

70.8

4,210

May

62 

62

61

62

62

61

60

62

62

61

60

60

60

60

58

58

59

59

58

58 

58

57

57

57

56

55

56

56

56

1,842

59.4

3,650

June

58 

5s

58

57

57

57

57

57

57

56

56

56

56

57

#56

56

56

56

51

56

57

57 

51

56

56

56

54

54

52_

53

1,686

56.2

3,340

July

50 

51

M

"

52

51

51

51

51

50

49

50

48

47

47

47

46

46

46

»46

46

46 

46

44

15

46

46

46

44

44

44

1,480

47.7

2,940

Aug.

44

41Tf

45

45

44

44

43

42

4T

42

43

43

43

43

43

43

43

43

44

44

44

43

43

43

43

43

42

42

42

42

1,340

43.2

2,660

Sept.

42 

42

41

Tl

*41

41

41

41

41

43

43

43

44

44

44

44

44

46

Te

46

46

46 

46

46

46

46

46

46

46

AC4O

1,318

43.9

2,610

Calendar year 1955: Max 474 Min 38 Mean 46.9 Ae-ft 33,960

Water year 1955-56: Max 474 Hln 38 Mean 61. Z Ac-ft 44,410

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage and weather records.
5°4 KLAMATH RIVER BASIN

Klamath River below Fall Creek, near Copco, Calif.

Location. Lat 41 0 58', long 122 °22', in NE£ sec. 36, T. 48 N., R. 5 W., on right bank

500 ft downstream from Fall Creek, half a mile downstream from Copco No. 2 plant of The 

California Oregon Power Co., and 1 mile south of Copco.

Drainage area. 4,370 sq mi, approximately.

Records available. October 1923 to September 1956. Prior to October 1928, published as 

"Klamath River near Copco."

Gage. Water-stage recorder. Altitude of gage is 2,310 ft (from river-profile map). Prior 

to Oct. 1, 1928, at site half a mile upstream (above Fall Creek) at different datum.

Average discharge. 33 years, 1,731 cfs (1,253,000 acre-ft per year), including Fall Creek.

Extremes.--Maximum discharge during year, 12,000 cfs Dec. 21 (gage height, 8.15 ft), from 

rating curve extended above 6,600 cfs by logarithmic plotting; minimum, 225 cfs Aug. 4 

(gage height, 1.60 ft); minimum daily, 281 cfs Aug. 4.

1923-56: Maximum discharge, that of Dec. 21, 1955; minimum, about 10 cfs above Fall 

Creek several times in 1925, 1926; minimum daily, 83 cfs at present site Aug. 2, 1931.

Remarks.--Records excellent. Diversions above stations; complete regulation by Upper 

Klamath Lake and powerplant above station.

Rating tables, water year 0.955-56 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Dec. El)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 30

1.7 270

2.0 430

2.5 830

3.0 1,340

4.0 2,610

5.0 4,270

7.0 8,580

1.7 270

2.0 430

2.5 840

3.0 1,360

4.0 2,700

6.0 6,500

8.0 11,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

348 

328

1,310

1,160 

1,200

1,310

1,290

418

602

1,110

1,440

1,270

1,190

1,270

584

318

1,540

1,690

al,350

a2,500

al,900

a440

a300

al,850

a2,100

a2,200 

1,820 

2,220

1,740

701

1,410

38,709

1,249

76,780

Nov.

2,310 

2,160

2,050

1,350 

1,320

1,560

1,850

2,120

2,580

2,750

1,340

1,110

921

2,240

2,480

2,540

2,360

2,640

1,460

1,160

2,050

*2,720

2,750

2,340

2,230

970 

1,620 

2,120

2,500

2.810

60,411

2,014

119,800

Dec.

2,490 

2,580

2,180

1,520 

2,540

3,250

3,280

3,200

3,320

3,300

2,970

2,880

2,880

3,050

3,280

3,280

3,180

3,420

3,590

3,830

6,420

10.400

8,520

6,890

6,980

6,590 

6,050 

6,270

6,340

5,650

5,740

135,670

4,376

269,100

Jan.

6,050 

5,960

6,180

6,520 

6,290

6,290

6,250

6,320

6,180

6,320

6,320

6,620

6,820

7,190

9,050

8,250

7,720

7,670

7,500

7,310

7,050

7,650

7,910

7,840

7,860

7,740 

7,500 

7,210

7,140

7,010

6,800

218,520

7,049

433,400

Feb.

5,650 

5,680

6,090

6,180 

6,180

*6,340

6,400

5,720

4,530

3,850

4,250

3,850

3,760

3,360

3,300

3,310

3,310

3,300

2,760

3^330

4,550

5,740

6,590

6,500

6,320

6,010 

6,050 

6,090

5,940

_.--._.

144,940

4,998

287,500

Mar.

6,090 

6,360

6,450

6,620 

6,620

6,270

6,160

6,180

6,270

*6,450

6,120

6,310

6,380

6,270

6,270

6,380

6,360

6,320

6,620

6,730

6,680

6,450

6,620

6,750

7,080

7.190 

7,050 

6,780

6,620

6,660

6,960

202,070

6,518

400,800

Apr.

7,140 

7,330

7,330

7,330 

7,310

7,310

7,290

7,310

7,380

7,650

7,570

7,530

7,620

7,740

7,860

7,860

8,010

7,910

7,840

7,670

7,430

7,010

6,960

6,910

6,840

6,620 

*6.550 

6,780

6,910

7,170

220,170

7,339

436,700

May

7,120 

6,840

6,450

6,070 

6,090

5,960

5,740

5,900

6,070

6,410

6,680

6,750

6,890

7,010

6,820

6,620

6,430

6,230

6,090

6,230

6,340

6,380

5,830

5,210

4,890

3,920 

2.910 

4,250

3,780

3,690

3,710

179,310

5,784

355,700

June

3,620 

3,650

3,650

3,650 

3,780

3,830

5.960

3,800

5,470

5,600

3,450

3,350

3,510

5,480

*5,090

3,120

3,580

3,940

5,670

3,470

5,420

5,360

3,010

2,060

2,730

2,500 

1,950 

2,240

2,500

1,560

96,800

3,227

192,000

July

1,060 

2,530

2,690

1,840 

2,280

2.750

1,750

795

2,250

2,590

2,410

2,010

2,190

1,490

750

1,970

2,230

1,600

1,450

*1,350

520

658

1,550

1,880

1,680

2,460 

1,490 

754

495

1,880

1,740

52,832

1,704

104,800

Aug.

2,520 

1,890

1,180

281 

1,090

1,810

2,500

2,550

1,760

1,850

1,090

708

1,960

1,950

2,590

2,140

1,910

929

772

1,480

2,590

2,140

2,400

2,180

1,550

562 

1,910 

1,960

2,380

2,240

2,080

53,892

1,738

106,900

Sept.

1,790 

946

. 959

2,410 

1,930

2,040

*2,080

2,620

1,380

2,020

2,160

2,070

2,030

2,240

1,780

758

2,580

2,370

2,190

2,330

2,540

1,380

672

2,270

3,040

3,140 

5,130 

5,240

1,970

1,260

61,325

2,044

121,600

Calendar year 1955: Max 10,400 Mln 270 Mean 1,558 Ac-ft 1,128,000

Water year 1955-56: Max 10,400 Mln 281 Mean 4,002 Ac-ft 2,905,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of powerplant output records and records for

ll Creek near Coc
KLAMATH RIVER BASIN 565

Keene Creek at Hyatt Prairie, near Ashland, Oreg.

Location.--Lat 42°10', long 122°29', in SW£ sec. 16, T. 39 S., R. 3 E., on right bank a 

a quarter of a mile upstream from Burnt Creek, half a mile downstream from Hyatt Prairie 

Reservoir Dam, and 12 miles east of Ashland.

Drainage area. About 11 sq mi.

Records available. April 1917 to June 1922 (fragmentary), November 1948 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 4,715 ft (by barometer). Apr. 1, 1917, to June 30, 1922, water-stage recorder at site half a mile upstream at different datum.

Average discharge. 7 years (1949-56), 13.3 cfs (9,630 acre-ft per year).

Extremes.--Maximum discharge during year, 68 cfs July 25 (gage height, 3.03 ft); minimum 

daily, 0.2 cfs for many days.

1917-22, 1948-56: Maximum discharge, 751 cfs May 3, 1954 (gage height, 5.33 ft), 

caused by failure of flashboards on spillway of Hyatt Prairie Reservoir Dam, from rating 

curve extended above 50 cfs on basis of computation of peak flow over Columbus-type 

control; no flow at times.

Remarks. Records good. Regulation since December 1922 by Hyatt Prairie Reservoir (capacTEyT 16,180 acre-ft). Practically entire flow diverted about 1 mile below station by 

Keene Creek Canal for irrigation near Ashland and Talent in Rogue River basin.

Revisions. WSP 1245: Drainage area.

Rating table, water year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

1.6

1.7

1.8

1.9

2.0

2.1

2.2

0.1 

.3

1.2

a.o

3.1

a.3 

a.4

2.5

2.6

a.e

3.1

4.8

7.5

11

16

34

71

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ao

ai

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

~7S 0.2

.2

.2

.2

.2

.2

.2

.2

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

475

6.5

0.21

13

Nov.

0.2

T2

«.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.5

71

.3

.3

.3

.2

.2

.3

.4

.3

.3

.3

7.4

0.25

15

Dec.

0.4

.3

75

.3

.3

.3

.3

.3

.3

.3

.4

.4

.6

.6

.6

.6

.5

.6

.8

.9

2.4

44

275

1.9

1.6

1.4

1.2

1.1

.9

.8

 8

28.6

0.92

57

Jan.

0.8

.7

.7

.6

.6

.6

.6

.6

.5

7s

.5

.5

.5 1.2

3.4

2.7

2.2

1.9

1.9

1.8

1.7

1.9

1.7

1.6

1.6

1.4

1.3

1.1

1.1

1.0

 9

38.1

1.23

76

Feb.

~7S 0.8

.7

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.4

71

.4

.4

.4

.4

.4

.5 - - - - 

16.1

0.56

32

Mar.

0.5

.5

.5

.5

^4

.4

.4

.5

.5

.5

.4

.4

.5

.5

.6

.6

.8

.9

1.0

1.1

1.2

1.5

1.6

1.8

2.0

a.o

1.8

1.8

1.9

a.o

1*8

30.9

1.00

61

Apr.

1.6

1-5

ITS

1.5

1.6

1.7

1.8

1.9

2.0

2.2

2.2

2.2

2.2

a2.4

a2.4

82.4

82.4

a2.4

82.4

a2.6

83.2

84.2

84.1

aTTe

83.6

83.0

2.8

2.6

2.4

2.2

74.1

2.47

147

May

2.2

275

2.0

2.0

2.0

1.9

1.9

1.8

1.7

2.0

2.0

a.o

a.o

1.9

1.8

1.7

1.6

1.6

1.4

1.2

1.1

1.1

1.0

1.0

.9

.9

.9

.8

75

.8

.8

46.8

1.51

93

June

0.8

.7

.7

.7

.7

.6

76

.6

.6

.6

.6

.6

.6

.7

.6

.6

2.0

5.8

6.0

6.3

6.0

6.3

6.3

6.0

6.0

6.6

14

18

15

18

135.6

4.52

269

July

18

15

19

ao

23

44

42

42

42

44

44

45

21

45

50

58

59

59

59

59

59

58

58

62

64

67

«5I

64

63

63

63

1,496

48.3

2,970

Aug.

63

63

63

63

63

63

63

63

63

M

64

64

64

64

59

57

57

57

57

57

58

33

18

15

18

18

18

18

18

18

*18

1,484

47.9

2,940

Sept.

23

25

42

56

56

56

56

56

57

58

59

61 BT

61

36

3.3

3.3

6.3

3.8

2.9

2.9

2.9

2.9

2.8

2.7

2.7

2.7

2.7

2.7

1_.6

809.2

27.0

1,610

Calendar year 1955: Max 74 Hln 0.2 Mean 16.0 Ac -ft 11,620

Water year 1955-56: Max 67 Min 0.2 Mean 11.4 Ao-ft 8,280,

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage and weather records.

493801 O - 59 - 37
566 KLAMATH RIVER BASIN

Shasta River near Yreka, Calif.

Location. Lat 41 C 49'30", long 122°35'40", in E| sec. 24, T. 46 N., R. 7 W., on right bank 

0.5 mile upstream from mouth and 7 miles north of Yreka.

Drainage area. 796 sq mi.

Records available.--October 1933 to December 1941, December 1944 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 2,000 ft (from topographic map). Prior 

£o Nov. 2, 1933, staff gage at same site and datum.

Average discharge.--19 years (1933-41, 1945-56), 171 cfs (123,800 acre-ft per year).

Extremes. Maximum discharge during year, 6,090 cfs Dec. 22 (gage height, 9.43 ft), from 

rating curve extended above 4,100 cfs; minimum, 34 cfs Aug. 19.

1933-41, 1944-56: Maximum discharge, that of Dec. 22, 1955; minimum, 3.4 cfs Aug. 13, 

1939, when about 2 cfs was being diverted around gage.

Remarks.--Records good. Flow partly regulated by Lake Dwinnell beginning in 1928 (allowable capacity, 30,000 acre-ft). Many diversions above station for irrigation.

Revisions. WSP 1285: Drainage area.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

2.8 

3.0 

3.2 

3.5 

4.0

37

65

116

237

455

4.5 

5.0 

6.0 

7.0 

9.0

690

1,000

1,820

2,860

5,440

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21 

22 

23

24 

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

78

67

M

65

65

72

74

102

120

127

131

142

149

m

149 

146

142

138

138

131 

131 

134

138 

138

146

153

153

149

149

153

3,858

124

7,650

Nov.

149

149

146

142

146

149

146

142

*151

146

134

134

142

142 

146

157 

170

182

212

310

468 

306 

267

224 

203

195

191

187

187

182

5,585

186

11,080

Dec.

208

199

191

182

203

254

216

203

233

212

203

203

199

195 

195

199

208

428

574

780

1,800 

5.440 

*4,330

*2,080 

1,210

986

918

655

518

455

424

24,101

777

47,800

Jan.'

375

349

144

338

450

442

576

702

522

450

414

397

437

756 

2 .060

2,060 

1,330

1,000

918

1,010

858 

858 

*1,000

840 

804

798

774

696

595

540

496

23,239

750

46,090

Feb.

455

428

419

424

406

384

370

357

332

327

319

327

332

310 

297

*284

289

289

499

1,690 

1.970 

1,310

888 

768

665

581

550

518

16,055

554

31,840

Mar.

509

558

563

572

586

568

*545

518

464

442

428

432

432

410 

421

410 

432

455

478

496

491 

486 

496

518 

532

536

486

442

414

424

414

14,938

482

29,630

Apr.

588

366

349

306

267

267

246

241

254

254

250

233

237

241 

237

241 

237

224

224

237

229 

229 

216

'512 203 

212

237

229

212

203

7,481

249

14,840

May

178

170

191

216

237

229

271

*284

276

284

419

414

349

297 

258

212 

187

157

174

170

174 

157 

134

138 

146

142

146

142

116

131

187

6,586

212

13,060

June

182

199

195

216

195

182

149

146

138

146

134

146

123

142 

170

178 

174

174

208

208

153

134 

131

127 

120

110

96

85

80.

80

4,521

151

8,970

July

78

80

93

107

93

96

99

93

115.

85

67

69

67

62 

64

49

58

46

*54

56

56 

54 

59

59 

56

53

93

67

64

62

62

2,214

71.4

4,390

Aug.

53

56

58

58

64

62

74

85

74

74

80

80

65

69 

64

50 

52

49

Jtl

58

54 

60 

60

56 

67.

65

54

58

53

53

52

1,909

61.6

3,790

Sept.

49

il

62

74

78

74

62

59

69

76

76

72

65

69 

76

72 

80

99

131

220

187 

178- 

178

187

178

170

166

*166

174

174

3,368

112

6,680

Calendar year 1955: Max 5,440 Mln 5.9 Mean 151 Ac-ft 109,000

Water year 1955-56: Max 5,440 Mln 46 Mean 311 Ao-ft 225,800

:e (base. 400 efs). Nov. 21 (5 a.m.) 518 cfs (4.14 ft)} Dec. 22 (3 

. 8 (1 a.m.) 750 cfs (4.60 ft); Jan. 15 (5:30 p.m.) 2,790 cfs (6.9 

cfs (6.73 ft); -Mar. 26 (lO a.m.) 554 cfs (4.22 ft); May 11 (2 p.m.

Peak dlaoharpp 

(9.43 ft)> Jan. 

(3 p.m.) 2,56O C-_ ^-..^ --/, .. . * -.« -

* Discharge measurement made on this day.

22 (3 a.m.) 6,090 cfs 

'-.94 ft); Feb. 21

) 468 ofa (4.03 ft).
KLAMATH RIVER BASIN 567

Scott River near Fort Jones, Calif.

Location. Lat 41 "38"35", long 123°00'35", in NV.£ sec. 28, T. 44 N., R. 10 W., on right

bank 150 ft south of road from Fort Jones to Scott Bar, 1.8 miles upstream from Snow

Creek, and 10.5 miles downstream from Fort Jones. 

Drainage area. 662 sq mi.

Records available. December 1941 to September 1956. 

Gage. Water-stage recorder. Datum of gage is 2,625.80 ft above mean sea level (levels by

(Torps of Engineers).

Average discharge. 14 years (1942-56), 637 ofs (461,200 acre-ft per year). 

Extremes. Maximum discharge during year, 38,500 cfs Dec. 22 (gage height, 21.40 ft), from

rating curve extended above 5,500 cfs on basis of slope-area determination of peak flow;

minimum, 34 cfs Oct. 7, 9.

1941-56: Maximum discharge, that of Dec. 22, 1955; minimum, 20 cfs Sept. 14, 15,

1955.

Revisions. The figures of maximum discharge for some water years have been revised,

as shown in the following table. They supersede figures published In the water-supply

papers Indicated.

WSP

961 

981 

1061 

1121

Water 

year

1942 

1943 

1946 

1948

Date

Dec. 17, 1941 

Jan. 22, 1943 

Dec. 29, 1945 

Jan. 8, 1948

Discharge 

(cfs)

5,500 

8,870 

8,410 

8,800

Gage height 

(feet!

9.50 

11.65 

11.38 

11.61

Remarks. Records good. Diversions for Irrigation of about 30,000 acres above station. 

Revisions. WSP 1285:' Drainage area. Revised figures of discharge, In cubic feet per

second, for high-water period In the water year 1948, superseding those published In

WSP 1121, are given herewith: 1948 

Jan. 6............ 3,520

7............ 7,640

8............ 6,300

9............ 2,770

Month

Water year 1947-48. ..............

Cfs-days

181,906

Maximum

7,640

Minimum

72

Mean

497

Runoff In 

acre-feet

360,800

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13 

14 

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

38

36

36 

36

35

*35

35

35

35

42

39

38

37 

36 

36

36

36

37

36

35

35

44

44

43

43

43

42

43

44

44

45

1,199

38.7

2,380

Nov.

4646"

46 

66

61

58

62

62

*62

61

60

60

64 

62

61

64

65

68

335

1.490

962

536

415

355

315

290

355

361

330

300

7,118

237

14,120

Dec.

367

394

330 

295

287

*515

638

512

590

536

610

860

805 

698 

638

698

785

1,160

2,940

4,470

8,860

*30.500

15,500

8,060

4,950

4,000

3,200

2,540

2,090

1,850

1,620

101,098

3,261

200,500

Jan.

1,480

1,380

1,570 

2,120

2,300

1,770

2,220

1,970

1,620

*1,520

1,520

1,470

1,630 

2,500 

10,300

10.700

5,690

4,380

3,810

3,690

3,260

3,840

*5,160

3,840

3,320

3,040

2,740

2,360

2,130

1,870

1,690

96,710

3,120

191,800

Feb.

1,530

1,420

1,380 

1,340

1,300

1,260

1,220

1,180

1,120

1,100

1,090

1,100

1,080 

1,040 

990

915

*945

920

925

1,280

4,320

4,100

2,730

2,020

1,770

1,590

1,430

1,370

1,310

43,775

1,509

36,830

Mar.

1,260

1,280

1,360 

1,430

1,460

1,320

1,260

1,290

1,290

1,260

1,230

1,190

1,170 

1,190 

1,190

1,220

1,330

1,480

1,590

*1,700

1,740

1,790

1,800

1,890

2,030

g -0 60

1J870

1,650

1,570

1,570

1,570

46,040

1,485

91,320

Apr.

1,450

1,340

1,260 

1.200

1,240

1,250

1,320

1,370

1,430

1,670

1,850

1,640

1,540 

1,640 

1,750

1,750

1,690

1,640

1,750

2,060

2,420

2,580

2,670

2.760

2,520

2,190

1,890

1,710

1,640

1,600

52,820

1,761

104,800

May

1,580

1,640

1,760 

2,150

2,080

1,830

1,690

1,570

1,450

1,450

1,400

*1,270

1,170 

1.120 

1,140

1,350

1,760

2,100

2,540

2,660

2,520

2,580

2.860

2,590

2,260

2,100

1,950

1,720

1,760

2,020

2,200

58,270

1,880

115,600

June

2.030

1,810

1,850 

1,770

1,480

1,290

1,230

1,290

1,430

1,500

1,390

1,280

1,260 

1,270 

1,250

1,100

1,050

1,020

1,190

1,130

988

920

920

905

840

780

795

815

775

708

36,066

1,202

71,540

July

642

655

550 

514

486

452

430

420

414

391

385

372

347 

312 

306

270

267

202

199

206

204

*193

186

179

165

162

239

208

181

162

9,851

318

19,540

Aug.

143

132

125 

120

120

120

93

103

102

99

TIB" 

107

104

102

97

98

100

97

100

98

97

96

92

89

86

83

77

84

3,194

103

6,340

Sept.

79

78

78 

74

75

74

73

65

40

50

66

69

73 

76 

77

78

130

95

91

94

93

92

90

88

87

85

84

*84

82

82

2,400

80.0

4,760

Calendar year 1955: Max 30,300 Mln 20 Mean 474 Ao-ft 343,200

Water year 1955-56: Max 30,300 Mln 35 Mean 1,253 Ac-ft 909,500

Peak discharge (base, 2.000 cfa). Dec. 22 (10 a.m.) 38,500 cfs (21.40 ft)j Jan. 4 (12 p.m.) 2,600 

cfs (6.72 ft); Jan. 7 (1 p.m.) 2,480 o£s (6.60 ft); Jan. 15 (12 p.m.) 15,100 cfs (14.05 ft)j Jan. 23 

(8 a.m.) 5,550 cfs (9.11 ft)j Feb. 21 (12 p.m.) 6.520 cfs (9.76 ft); Mar. 26 (9 a.m.) 2,130 cfs 

(6.48 ft)j Apr. 24 (9:30 a.m.) 2,880 cfs (7.24 ft)} May 4 (6:30 p.m.) 2,260 cfs (6.62 ft)j May 23 

(7 a.m.) 3,020 cfs (7.38 ft)j May 31 (7 a.m.) 2,330 cfs (6.69 ft).

Discharge measurement made on this day.
568 KLAMATH RIVER BASIN

Klamath River near Seiad Valley, Calif.

Location. Lat 41°51'20", long 123C 13'50", in SE^ sec. 4, T. 46 N., R. 12 W., on right 

bank 0.4 mile upstream from Bittenbender Creek, 1.4 miles downstream from Grider Creek, 

and 2.2 miles west of town of Seiad Valley.

Drainage area.--6.980 sq mi, approximately.

Records available. November 1912 to June 1925, July 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,320 ft (from river-profile map). November 1912 to June 1925, staff gage at site 3f miles upstream at different datum.

Average discharge. 16 years (1913-24, 1951-56), 4,094 cfs (2,964,000 acre-ft per year).

Extremes. Maximum discharge during year, 122,000 cfs Dec. 22 (gage height, 29.2 ft, from 

floodmarks), from rating curve extended above 25,000 cfs on basis of slope-area determination of peak flow; minimum daily, 720 cfs Oct. 3.

1912-25, 1951-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, 320 cfs 

Nov. 25, 1917.

Remarks. Records excellent except those for periods of fragmentary or no gage-height record, which are fair. Flow considerably regulated by reservoirs and powerplants above 

station. Large diversions above station for irrigation.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to May 10 May 11 to Sept. 30

1.7 

2.0 

2.5 

3.0 

4.0

720

840

1,090

1,420

2,380

6.0

9.0

15.0

22.0

5,210

11,200

30,600

66,600

2.0 

2.5 

4.0 

6.0 

8.0 

10.0

1,030

1,350

2,650

5,360

8,990

13,900

Discharge, In cubic feet per second, water year October 1355' to September 1955

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22 

23

24 

25

26

27

28 

29

30

31

Total

Mean

Ac-ft

Oct.

1,480

736

720 1,470" 

1,360

1,440

1,480

1,460

824

1,040

1,570

1,620

1,490 

1,500

1,550

950

788

1,670

1,790

1,690

2,390

2,010 

788

736 

2,130

2,440

2,310

2.540 

2,090

1,840

955

47,057

1,518

93,340

Nov.-

2,250

2,420

2,370 

2,180 

1,600

1,640

2,000

2,320

2,510

3,280

2,020

1,650

1.44Q 

1,480

2,730

2,770

2,740

2,860

4,140

4.670

4,150

4,240 

3,700

3,690 

3.26O

2,736

2,040

2,950 

3,400

3,800

83,030

2,768

164,700

Dec.

3,970

4,210

3,590 

2,790 

2,580

4,650

 5,020

4,800

5,510

5,210

5,090

5,430

5,310 

5,260

5,280

5,510

5,650

7,060

12,100

16,900

27,900

 62,000 

44,666

31,000 

22,000

19,000

16,000

13,800 

11,500

10,100

9,100

382,120

12,330

757,900

Jan.

8,200

7,700

7.400 

8,300 

11,700

11,000

11,300

11,600

10,400

10,300

10,800

10,800

11,600 

14,300

38,100

36,400

23,100

19,500

18,100

18,300

 16,900

18,600 

 24,400

19,800 

17,600

16,700

15,600

14,100 

12,500

11,000

9,600

475,700

,15,350

943,500

Feb.

9,000

8,400

8,000 

7,600 

7,200

7,000

6,800

6,600

6,300

6,100

6,000

5,800

5,700 

5,600

*5,500

5,400

5,400

5,300

5,400

7,000

20,000

21,000 

17,000

15,000 

13,000

12,000

11,000

10,000 

9,900

259,000

8,931

513,700

Mar.

10,000

10,500

11,400 

11,200 

11,000

10,700

10,500

10,300

 10,200

10,100

9,910

9.610

97750 

9,760

9,690

10,000

10,500

10,900

11,600

11,900

12,000

12,100 

12,200

12,700 

13,200

13.800

12,906

12,400 

11,700

11,800

11,800

346,090

11,160

686,500

Apr.

11,900

11,600

11,300 

11,100

11,266

11,200

11,400

11,400

11,800

12,600

13,200

12,600

12,300 

12,700

13,100

13,000

13,000

12,800

12,900

13,500

14.200

14,000 

14,000

14,100 

13,600

12,800

12,000

11,700 

11,700

11,700

374,400

12,480

742,600

May

11,600

11,600

11,300 

11,700 

11,800

11,200

10,800

10,500

10,400

 10,600

11,000

10,800

10 , 600 

10,400

10,400

10,500

10,800

11,400

12,200

12,500

12,000

12,200 

12,300

11,400 

10,500

9,670

8,140

8,180 

8,390

8,280

8,790

331,750

10,700

658,000

June

8.670

8,200

8,090 

7,950 

7,630

7,310

7,080

7,100

7,010

6,990

6,970

6,650

6,370 

6,250

6,300

6,130

5,980

6,170

6,540

6,590

6,250

5,980 

5,690

5,340 

4,380

4,850

4,400

4,000 

4,280

4,140

189,290

6,310

375,500

July

f3,700

f3,090

4,110 

4.270 

f3,386

3,930

4,030

f3,210

f2,510

f3,650

f3,690

f3,370

3,040 

3,330

2,320

2,020

2,820

3,000

2,500

 2,200

2,190

1.280 

1,716

2,160 

2,630

2,800

2,860

2,180 

1,570

1,570

2,380

87,500

2,823

173,600

Aug.

2,680

2,900

2,316 

1,840 

1,030

1,820

2,550

2,780

2,830

2,290

2,310

1,750

1,510 

2,540

2,770

2,750

2,510

2,220

1,530

1,790

2,620

2,720 

2,750

2,830 

2,320

1,900

1,250

2,500 

2,650

2,690

2,550

71,490

2,306

141,800

Sept.

2,440

2,220

1,610 

1,730 

2,700

2,370

2,390

2,550

2,530

1,760

2,400

2,420

2,320 

2,430

2,330

1,990

1,600

2,740

2,720

2,680

2,850

2,760 

1,660

1.580 

3,186

3,430

3,430

5,540 

3,360

1,940

73,400

2,447

145,600

Calendar year 1955: Max 62,000 Mln 654 Mean 2,817 Ao-ft 2,040,000

Water year 1955-56: Max 62,000 Mln 720 Mean 7,434 Ao-ft 5,397,000

 Discharge measurement made on this day.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights. 

Note. Ho gage-height record Dec. 22 to Jan. 11, Jan. 22, Jan. 29 to Mar. 9, July 19, 2oj discharge estimated on basis of records for downstream stations.
KLAMATH RIVER BASIN 569

Salmon River at Somesbar, Calif.

Location. Lat 41°22'50", long 123°28'10", in NW^ sec. 2, T. 11 N., R. 6 E., on right bank 

0.5 mile east of Somesbar Post Office and 1.5 miles upstream from mouth.

Drainage area. 746 sq mi.

Records available. September 1911 to September 1915, October 1927 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 500 ft (from topographic map). Prior 

Tfo October 1927, staff gage.at different datum.

Average discharge. 30 years (1911-13, 1927-29, 1930-56), 1,682 cfs (1,218,000 acre-ft 

per year).

Extremes. Maximum discharge during year, 84,000 cfs Dec. 22 (gage height, 28.80 ft), 

from rating curve extended above 15,000 cfs by logarithmic plotting; minimum, 133 cfs 

Oct. 1-4, 8, 9.

1927-56: Maximum discharge, that of Dec. 22, 1955; minimum, 70 cfs Aug. 25, 

Sept. 4, 5, 1931.

Remarks. Records good. No storage or large diversion above station.

Revisions (water years). WSP 1285: 1912, 1914, 1915(M), 1946(M), 1948(M), drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 21 Dec. 22 to Sept. 3O

2.7 

3.0 

3.5 

4.0 

5.0

120

255

565

980

2,370

6.0

7.0

9.0

11.0

16.0

4,420

6,82O

12,000

17.6OO

33.4OO

3.4 13O

3.7 320

4.0 540

5.0 1,540

6.O 5.O5O

7.0 5,390

12.0 19,500

24.0 64,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

155

135

155

155 

141

141

157

155

155

552

526

226

194

184

176

171

162

158

149

154

154

158

158 

154

*158

226

217

189

184

180

189

5,416

175

10,740

Nov.

207 

194

194

221 

294

282

245

221

207

198

189

184

207

217

198

251

255

417

4,910

5.670

2,650

1,550

1,210 

1,040

890

1,070

1,710

1,490

*1,250

1,090

28,471

949

56,470

Dec.

1,900 

1,760

1,400

1.150 

1,500

4,800

3,120

2,280

2,850

2,540

5,180

5,600

2,990

2,540

2,400

5,060

5,320

6,950

12,700

15,200

30,300

65 . 700

29,900 

16,100

10,800

8,760

7,220

5,560

4,530

3,640

3,110

262,420

8,465

520,500

Jan.

2,94O 

2.600

2,650

4,740 

5,460

4,210

4,380

3,900

5,400

5,560

5,590

5,590

4,190

9,890

54.600

22,500

13,500

10,900

9,830

9,770

9,150

12 , 800

16,400 

11,100

8,790

7,460

6,570

5,580

4,890

4,560

5,900

250,780

8,090

497,400

Feb.

5,470 

5,170

2,960

2,810 

2,660

2,550

2,410

2,540

2,260

2,250

2,170

2,190

2,170

2,120

2,050

1,960

1,980

1.870

1,910

2,900

10.000

8,96O

6,360 

4,690

3,950

3,290

2,940

2,810

*2,750

95,890

5,258

186,200

Mar.

2,600 

2,540

2,770

5,050 

5,010

2,700

2,480

2,410

2,400

2,580

2,520

2,250

2.200

2,260

2,290

2,410

2,750

5,580

5,640

5,520

5,580

5,450

5,520 

5,760

4,210

4.550

5,850

5,360

5,210

5,290

5,340

95,240

5,008

184,900

Apr.

5,050 

2,77O

*2,560

2.510 

2,660

2,720

2,960

5,010

5,520

4,190

4,210

5,570

5,540

5,760

5,780

5,540

5,540

5,540

4,140

5,200

5,920

5,970

6.050 

6,030

5,340

4,650

4,090

5,750

5,590

5,540

117,260

5,909

252,600

May

5,590 

*5,760

4,210

5,650 

4,890

4,380

4,170

5,660

5,580

5,400

3,110

2,770

2,560

2.550

2,820

3,780

4,770

5,460

6,050

5,850

5,520

5,950

*6.150 

5,320

4,770

4,600

4,020

3,610

4,190

4,910

4, 890

154,480

4,558

266,700

June

4.120 

5,810

4,070

5,450 

2,750

2,450

2,490

2,750

5,110

5,230

2,840

2,610

2,630

2,730

2,540

2,140

2,100

2,200

2,860

2,500

2,050

2,050

2,140 

2,060

1,870

1,880

2,020

2,060

1,840

1.650

76,780

2,559

152 , 500

July

1.490 

1,40O

1,320

1,27O 

1,210

1,180

1,200

1,240

1,230

1,150

1,050

1,020

1,010

960

880

870

850

820

782

782

701

665

658 

*629

612

596

580

525

480

450

455

27,985

905

55,510

Aug.

412 

405

590

376. 

362

355

348

354

320

507

500

294

288

281

274

268

268

262

262

262

268

262-

248 

242

256

236

229

222

222

216

210

8,959

289

17,770

Sept.

210 

203

196

196 

196

190

190

190

190

190

196

196

196

190

190

184

184

178

190

216

210

196

190 

184

178

178

172

172

172

172

5,695

190

11,3OO

Calendar year 1955: Max 63,700 Mln 108 Mean 1,500 Ac-ft 1,086,000

Water year 1955-56: Max 63,700 Mln 133 Mean 3,020 Ac-ft 2,192,000

Peak discharge (base, 7.QQQ cfa

cfs (11.42 f t ) f Dec . 22 ( 6: 30 a.m. / o*t,uwv UJ.H v co. ou i u/ j dan, j.o v ^ p.m. / 40 ,uuu UJ.B i j-o. ^o A 

Jan. 22 (11 p.m.) 20,000 cfs (12.17 ft); Feb. 21 (5 p.m.) 13,200 cfs (9.85 ft); May 25 (l a.m.) 

7,070 cfs (7.66 ft).

* Discharge measurement made on this day.

.--Nov. 19 (8 p.m.) 9.380 cfs (8.01 ft): Dec. 19 (7 p.m.) 18,800 

84.000 cfs (28.80 ft); Jan. 15 (2 p.m.) 43,000 cfs (18.73 ft); 

.m.)
570 KLAMATH RIVER BASIN

Klamath River at Somesbar, Calif.

Location. Lat 41°22i40", long 123°29'30", in NE^r sec. 4, T. 11 N., R. 6 E., on left bank 

300 ft downstream from Salmon River and 1 mile west of Somesbar Post Office.

Drainage area. 8,480 sq mi, approximately.

Records available. October 1927 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 450 ft (from topographic map).

Average discharge. 28 years (1927-29, 1930-56), 7,528 cfs (5,450,000 aore-ft per year).

Extremes. Maximum discharge during year, 202,000 cfs Dec. 22 (gage height, 59.4 ft, from 

floodmarks), from rating curve extended above 50,000 cfs by slope-conveyance study; 

minimum daily, 1,020 cfs Oct. 3.

1927-56: Maximum discharge, that of Dec. 22, 1955; minimum daily, 320 cfs Aug. 25, 

Sept. 1, 1931.

Remarks. Records good except those for periods of no gage-height record and those based 

on once-daily staff-gage readings, which are fair. Plow considerably regulated by 

reservoirs and powerplants above station. Large diversions above station for irrigation.

Revisions. WSP 811: Drainage area.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

4.0 

4.5 

5.0 

6.0 

7.0

Oct. 1 to Apr. 24

920 14.0

1,310 25.0

1,770 40.0

3,000 55.0

4,760

23,000

54,000

104,000

175,000

Apr. 25 to Sept. 30

4.4 

5.0 

6.0

1,690

2,320

3,730

8.0 

14.0

7,520

23,000

Note. Same as preceding 

tabTT~above 14.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

5 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Total 

Mean 

Ac-ft

Oct.

1,970 

1,690 

1,020 

1,216 

1,950

1,690 

1,940 

1,900 

1,700 

1,950

2,200 

2,390 

2,250 

1,970 

2,040

1,910 

1,330 

1,390 

2,450 

1,980

2,130 

2,390 

1,970 

1,120 

1,670

»2,900 

3.020 

2,730 

2,920 

2,490 

1,950

62,220 

2,007 

123,400

Nov.

2,020 

3,080 

2,960 

2,900 

2,540

2,430 

2,610 

2,620 

2,920 

3,340

3,480 

2,270 

2,080 

2,050 

2,820

3,400 

3,550 

4,160 

21,200 

18,700

11,400 

8,120 

8,100 

7,380 

6,810

8,220 

8,930 

7,880 

»7,450 

7,200

172,620 

5,754 

342,400

Dec.

11,300 

10,400 

8,720 

7,100 

6,950

14,400 

13,400 

11,300 

15,000 

12,600

14,000 

15,000 

14,100 

12 ,400 

11,900

15,000 

15,900 

24,800 

43,300 

52,500

75,000 

170,000

115,000 

70,000 

50,000

43,000 

37,000 

32,000 

28 ,400 

24,400 

23,000

997,850 

32,190 

*1,979

Jan.

21.600 

21,600 

21,600 

31,100 

35,800

28,400 

28,400 

28,400 

28,400 

27,000

27,000 

27,000 

27,000 

54,900 

98.200

80,900 

52,500 

40,800 

36,600 

40,800

36,600 

35,200 

57,900 

48,100 

40,500

37,200 

34,800 

31,800 

28,900 

26,600 

24,600

*1,138.2 

36,720 

*2,258

Feb.

22,600 

20,000 

19,500 

17,600 

17,600

16,800 

16,200 

16,200 

15,400 

14,400

13,300 

13,300 

13,100 

12,800 

12,000

11,400 

11,200 

11,000 

11,100 

14,700

41,600 

47 ,000 

35,300 

28,300 

24,800

22 ,500 

20,400 

19,600 

19,500

559,200 

19,280 

*1,109

Mar.

*18,800 

18,700 

20,400 

21,600 

21,500

19,400 

18,000 

17,400 

17,500 

17,400

17,200 

16,400 

16,466 

16,600 

16,600

17,000 

18,200 

20,100 

21,100 

21,400

21,300 

21,600 

22,000 

23,000 

24,400

26,500 

24,506 

22,400 

21,300 

21,500 

21,600

621,400 

20,050 

*1,233

Apr.

20,900 

» 19, 800 

19,100 

18,800 

19,166

19,366 

19,966 

20,200 

21,100 

25,500

24,400 

22,800 

21,900 

23,000 

23,600

25,200 

25,000 

22,900 

25,800 

26,600

28,800 

28,000 

28,500 

28,500 

27,100

25,600 

23,800 

22,200 

21,700 

21,400

692,300 

23,080 

*1,573

May

»21,500 

21,700 

22,000 

24,800 

24,000

22,600 

21,900 

20,300 

19,600 

19,800

19,600 

18,900 

18,100 

17,900 

18,500

20,500 

22,600 

24,100 

25.700 

25 ,406

24,100 

25,000 

25,500 

23,000 

21,400

20,300 

17,800 

16.400 

17,866 

19,360 

19,500

659,600 

21,280 

*1,308

June

18.200 

17,006 

17,200 

16,200 

15,400

14,600 

14,100 

14,000 

15,000 

15,200

14,800 

15,700 

15,200 

15,000 

15,000

12,400 

11,800 

11,800 

12,800 

12,900

12,000 

11,400 

11,200 

10,900 

9,850

9,500 

9,620 

9,070 

8,740 

* 8.6 10

586,970 

12,900 

767,500

July

8.500 

7,866 

7,200 

6,900 

6,500

6,500 

6,500 

6,400 

6,500 

6,000

6,000 

6,000 

6,000 

5,410 

4,820

5,850 

4,560 

4,940 

4,520 

3,880

3,900 

3,080 

2,610 

3,480 

*3,790

3,730 

4,610 

3,820 

2,900 

2.410 

3,250

155,760 

5,025 

308,900

Aug.

3,460 

3,580 

5.820 

2,780 

2,240

2,066 

3,136 

3,766 

3,760 

3,480

3,240 

2,760 

2,050 

2,750 

5,240

5,610 

5,610 

5,200 

2,320 

2,240

2,660 

5,680 

3,520 

3,670 

3,430

2,820 

1.930 

2,476 

3,080 

5,540 

3,400

95,170 

3,070 

188,800

Sept.

5,240 

2,850 

2,120 

2,100 

3,100

2,850 

2,920 

2,940 

3,310 

2,540

2,420 

2,970 

2,960 

2,800 

3,180

2,550 

1,990 

2,880 

5,240 

3,430

3,420 

3,600 

2,760 

1.760 

Z,676

3,900 

4,060 

4,070 

4,100 

3,200

89,930 

2,998 

178,400

Calendar year 1955: Max 170,000 Mln 976 Mean 6,743 Ac-ft 4,881,000 

Water year 1955-56: Max 170,000 Mln 1,020 Mean 15,390 Ac-ft 11,170,000

* Expressed In thousands.

Note. No gage-height record Dec. ,21-28,, July l-12j discharge estimated on basis of records for 

station near Klamath or Salmon River at Somesbar. Discharge computed from once-daily staff-gage 

readings, Dec. 29 to Jan. 23, Feb. 2-12.
KLAMATH RIVER BASIN 571.

Trinity River at Lewiston, Calif.

Location. Lat 40°42', long 122°48', in NEtj- sec. 19, T. 33 N., R. 8 W., on downstream side 

of left pier of highway bridge at Lewiston, 0.8 mile downstream from Deadwood Creek.

Drainage area. 727 sq mi.

Records available. August 1911 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,794.10 ft above mean sea level, datum of 

 1929. Prior to Oct. 16, 1930, staff gage at upstream side of bridge at same datum.

Average discharge. 45 years, 1,608 cfs (1,164,000 acre-ft per year).

Extremes.--Maximum discharge during year, 71,600 cfs Dec. 22 (gage height, 27.3 ft, from 

Socfoiarks); minimum, 126 cfs Oct. 10. 

1911-56: Maximum discharge, that of Dec. 22, 1955; minimum, 23 cfs July 30, 1924.

Remarks. Records excellent except those based on occasional staff-gage readings, which 

are good. Flow slightly regulated by diversions above station for irrigation, power, 

and placer mining. Records of chemical analyses and water temperatures for the water 

year 1956 are given in WSP 1453.

Revisions (water years).--WSP 331: 1911-12. WSP 1181: 1949. WSP 1345: Drainage area.

Rating tables, water year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

4.2

4.6 

5.0 

5.5 

6.0 

6.5 

7.0

126

180

252

365

520

715

1,020

8.0

9.0

11.0

13.0

17.0

21.0

1,970

3,220

6,620

11,200

23,500

39,300

4.4

4.7 

5.0 

5.5 

6.0 

6.5

164

209

265

363

535

740

7.0

8.0

9.0

11.0

13.0

15.0

1,030

1,920

3,080

6,240

11,100

16,900

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

e

9

10

11

12

13

14

15

16

17

IS 

19

20

21

22 

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

136 

131

128 

131

133

134

136

130

127 T4"6

219

2oo

172

171

164

161

157

154 

154

151

152

154 

154

150

148

. 152 

170

166

164

159

155

4,759

154

9,440

Nov.

*154 

1ST

155 

161

186

191

186

180

174

171

165

162

177

190

186

200

214

232 

776

5,700

2,200

1,030 

765

650

590

562 

679

715

679

646

16,230

541

32,190

Dec.

*755 

770

658 

576

562

654

674

610

782

720

832

1,120

1,080

1,010

992

1,180

1,400

4,140 

12,900

14,100

29,100

g58,700 

g!4,700

g8,560

g6,040

g4,780 

g4,240

g3,890

*g3,470

3,120

2,770

164,885

5,319

327,000

Jan.

2,630 

2,320

2,260 

3,370

4,020

4,180

7,840

5,530

4,060

4,520

5,720

4,810

5,310

8,430

21,000

16,200

9,470

6,740 

5,500

5,590

5,280

5,550 

6,990

5,500

4,680

4,280 

3,950

3,460

3,080

2,840

2,630

177,740

5,734

352,500

Feb.

*2,420 

2,260

2,150 

2,070

2,010

1,920

1,840

1,820

1,810

1,800

1,800

1,860

1,910

1,890

1,830

1,740

1,740

1,650 

1,680

1,900

8,020

8.390 

5,820

4,140

3,460

2,910 

2,580

2,380

2,290

78,090

2,693

154,900

Mar.

*2,180 

2,150

2,230 

2,330

2,340

2,150

1,990

1,900

1,960

2,000

2,010

1,940

1,960

2,110

2,160

2,280

2,550

2,930 

3,160

3,180

3,250

3,330 

3,540

3,960

4,480

4,560 

3,950

3,510

3,470

3,690

*3,620

86,870

2,802

172,300

Apr.

3,310 

3,040

2.810 

2,826

3,200

3,340

3,830

4,030

4,370

5,150

5,190

4,280

3,930

4,000

4,310

4,100

4,380

4,520 

5,300

6,790

8,130

8,620 

9,120

9,520

6,926

5,690 

4,840

4,590

4,730

4,890

149,550

4,985

296,600

May

*5,260 

5,920

6,260 

6,920

6,770

5,920

5,410

4,810

4,590

4,730

4,360

3,860

5.580

3,710

4,210

5,740

7,340

8,340 

9,570

9,400

8,660

9,090 

9.990

8,270

7,290

6,900 

6,330

5,330

5,660

6,640

6 ,990

197,850

6,382

392,400

June

*6,060 

5,356

5,726 

5,240

4,030

3,650

3,740

4,030

4,370

4,480

3,970

3,650

3,650

3,550

3,390

2,910

2,780

2,790 

3,580

2,960

2,610

2,550 

2,610

2,490

2,250

2,240 

2,320

2,380

2,150

*1,890

103,390

3,446

205,100

July

1,670 

1,566

1,366 

1,290

1,250

1,190

1,160

1,200

1,180

1,100

1,020

1,080

960

894

858

810

780

770 

735

730

690

650 

622

614

586

570 

549

521

504

470

440

27,753

895

55,050

Aug.

*410 

4tf7

396 

378

367

380

378

356

338

334

324

308

299

290

284

280

280

276 

271

263

261

255 

253

249

247

243 

236

226

221

216

211

9,237

298

18,320

Sept.

*207 

55T

203 

198

192

192

188

186

187

192

196

195

193

192

188

186

178

175 

TW

193

203

193 

186

181

178

178 

178

177

175

175

5,653

188

11,210

Calendar year 1955: Max 38,700 Mln 113 Mean 1,304 Ac-ft 943,700

Water year 1955-56: Max 38,700 Mln 127 Mean 2,792 Ao-ft 2,027,000

Peak discharge (base, 5.400 ofs). Dee. 19 (8 p.m.) 20,100 cfs (16.01 ft); Dec. 22 (2 a.m.) 71,600 

cfs (27.3 ft); Jan. 7 (7 a.m.) 9,060 cfs (12,21 ft); Jan. 11 (6 a.m.) 6,100 cfs (10.93 ft); Jan. 15 

5 p.m.) 26,000 cfs (17.68 ft); Jan. 23 (4 a.m.) 7,480 cfs (11.55 ft); Feb. 21 (5 p.m.) 12,000 cfs 

13.33 ft); Apr. 24 (6 a.m.) 10,300 cfs (12.71 ft); Hay 5 (3 a.m.) 7.460 cfs (11.54 ft); May 20 

3 a.m.) 10,800 cfs (12.88 ft); May 23 (4 a.m.) 11,400 cfs (13.09 ft); May 31 (2 a.m.) 8,130 cfs 

11.82 ft).

* Discharge measurement made on this day.

g Computed from occasional staff-gage readings.
578 KLAMATH RIVER BASIN

Hayfork Creek near Hyampom, Calif.

Location. Lat 40°37'35", long 123°26'00", in NW^ sec. 19, T. 3 N., R. 7 E., on right bank 

172 miles upstream from mouth and 1.3 miles northeast of Hyampom.

Drainage area. 379 sq mi.

Records available. August 1953 to September 1956.

Sage.--Water-stage recorder. Altitude of gage is 1,280 ft (from topographic map).

Extremes.--Maximum discharge during year, 25,300 cfs Dec. 22 (gage height, 18.00 ft), from 

rating curve extended above 6,100 cfs on basis of slope-area determination of peak 

flow; minimum, 25 cfs Oct. 6, 8, 9.

1953-56: Maximum discharge, that of Dec. 22, 1955; minimum, 17 cfs Sep't. 8, 9, 1955.

Remarks.--Records good. Diversions for irrigation of about 700 acres above station. 

Revisions (water years). WSP 1395: 1954(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge. 

In cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 3O

2.9

3.0 

3.2 

3.4

4.1

20

49

92

292

5.5

7.0

9.0

12.0

16.0

895

2,OOO

4,2OO

9,500

19,700

3.0 

3.3 

3.6

4.0

31

75

147

268

5.0 

6.O 

7.O

656

1,200

2,000

Note. Same as preceding 

table above 7.O ft.

Discharge; In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

28

29

28

29

30

*29

26 

25

26

32

33

32

32

32

32

33

33

33

35

35

36

39

38

38

39

49

44

44

44

44

41

1,068

34.5

2,120

Nov.

43

43

43

46

49

51

51 

49

49

47

47

46

53

63

59

69

78

94

170

855

*728

316

247

231

207

195

222

203

244

225

4,873

162

9.67O

Dec.

3O9

352

272

228

237

962

747 

*505

835

646

601

686

565

472

409

464

944

5.O2O

11,9OO

*7,580

»8,720

*1B.2OO

11,200

5,330

3,25O

2.67O

2,280

1,780

1,440

1,200 

1,040

90,844

2,930

18O,2OO

Jan.

1,030

940

915

1,650

2,450

2,150

3,050 

2,600

2,060

2,200

2,520

2,330

3,320

7,690

12 . 700

8,190

4,94O

3,790

3,08O

3,100

2.90O

2,880

3,770

5,050

2,660

2,560

2,4OO

2,040

1,790

1,600 

*1,440

97,795

3,155

194,000

Feb.

1,3OO

1,170

1,10O

1,04O

994

956

925 

900

875

855

835

835

855

850

820

771

761

724

733

1,490

12.400

9 18O

5^390

3,680

2,850

2,300

1,94O

1,840

1,75O

-----

60,119

2,073

119,200

Mar.

1,580

1,530

1,57O

1,660

1.680

1,520

1.39O 

*1,330

1,310

1,280

1,230

1,170

1,130

1,140

1,140

1,160

1,260

1,490

1,63O

1,590

1,540

1,540

1,500

1,500

1,540

1,530

1,320

1,160

1,080

1,060 

1.050

42,610

1,375

84,520

Apr.

972

895

835

8OO

815

810

835 

83O

845

920

925

88O

86O

850

835

*815

810

785

785

830

85O

805

781

752

709

696

639

593

555

530

23,842

795

47,290

Kay

510

502

526

785

835

790

*1.050

776

719

682

610

564

522

494

47O

45O

442

422

399

376

358

340

326

316

302

295

285

275

336

15,897

513

31,530

June

305.

278

258

252

246

236

230 

224

214

205

205

193

190

'188 188

188

182

179

193

185

*176

164

159

153

147

142

134

123

118

ii§.

5,770

192

11,44O

July

113

110

110

110

108

106

1O8 

1O6

103

101

96

94

92

94

94

92

86

83

83

81

79

75

73

72

68

*63

6O

58

11

57 

57

2,689

86.7

5,330

Aug.

55

55

57

57

57

55

55 

57

54

52

52

51

51

50

51

*48

48

47

47

45

45

44

44

43

43

43

43

43

43

43

41.

1,519

49.0

3,010

Sept.

40

40

40

40

39

39

39 

39

40

41

41

41

43

43

41

41

*40

41

43

55

52

50

47

47

45

45

44

44

43

43

1.28C

42.9

2,550

Calendar year 1955: Max 18,2OO Mln 17 Mean 44O Ac-ft 318,600

Water year 1955-56: Max 18,200 Mln 25 Mean 952 Ac-ft 690,900

Peak discharge (base, 2.2OO cfs). Dec. 19 (6 p.m.) 2O.2OO cfs (16.18 ft)s Dec. 22 (3 a.m.) 25,300

cfs (18.00 ft); Jan. 7 (8 p.m.) 3,320 cfs (8.27 ft); Jan. 15 (Z p.m.) 15,30O cfs (14.37 ft); Jan. 23

(3>iou a.m.; <t,v«tu UJLS v°«°' it;j reo t £± \t 

* Discharge measurement made on this day.
573

KLAMATH RIVER BASIN

South Fork Trinity River near Salyer, Calif.

Location. Lat 40°50'30", long 123°34'00", in SE£ sec. 1, T. 5 N., R. 5 E., on right bank 

4 miles south of Salyer and 8 miles upstream from mouth.

Drainage area. 899 sq mi.

Records available. October 1950 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 550 ft (from topographic map).

Average discharge.--6 years, 2,096 cfs (1,517,000 acre-ft per year).

Extremes. Maximum discharge during year, 74,700 cfs Dec. 22 (gage height, 39.4 ft, from 

floodmarks), from rating curve extended above 37,000 cfs by logarithmic plotting; minimum, 69 cfs Oct. 9'.

1950-56: Maximum discharge, that of Dec. 22, 1955; minimum, 54 cfs Sept. 10, 1955.

Remarks. Records good except those for periods of doubtful or no gage-height record, 

which are fair. No regulation or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

3.3

4.0 

5.0 

6.0 

8.0

69

161

360

640

1,400

10.0 

14.0 

2O.O 

30.0 

35.0

2,80O

S,OOO

19,300

45,200

60,60O

4.7 

5.1 

5.6 

6.4 

8.0

80

136

246

530

1,320

10.0

12.0

16.0

22.0

27.0

2,700

4,760

11,100

23,600

36,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

71 

70

7O

71

71

72

72

71

70

88

*103

95

95

89

86

84

82

80

79

85

98

99

97

93

92

106

116

112

108

104

101

2,728

88.0

5,410

Nov.

102 

106

104

110

126

123

120

119

115

110

106

102

117

129

152

155

175

241

1,550

4.250

3,270

1,370

1,040

982

842

874

986

*946

860

769

19,829

661

59,330

Dec.

1,29O 

1,450

1,150

912

1.13O

5,880

5,760

2,530

3,070

2,500

2,170

2,170

1,860

1,590

1,420

1,680

2,800

10,200

25,OOO

a24,000

355,000

aeo.ooo

a55,000

a 18, 000

a!2,000

a9,000

a8, 500

6,690

5,670

4,800

4,090

295,112

9,520

585,500

Jan.

5,950 

5,580

5.4OO

5,850

*9,160

7,610

9,670

8,440

6,87O

7,460

8,600

7,640

10.OOO

21,600

54.1OO

24,800

15,500

12,200

10,200

10,000

9,400

10,200

* 14, 200

10,900

8,840

8,010

7,610

6,480

5,470

4,770

4,280

510,770

10,020

616,400

Feb.

5,840 

*5,510

3,260

3,090

2,96O

2,840

2,750

2,650

2,570

2,500

2,450

2,400

2,44O

2,42O

2,320

2,210

2,170

2.10O

2,11O

4,840

29.200

,27,400

\17,600

. 8^420

6,760

5,710

5,290

5,250 _

172,120

5,935

541,400

Mar.

4,820 

4,700

*4,84O

5,020

5,O60

4,50O

4,050

5,780

3,620

3,440

5,270

5,O9O

2,990

2,980

2.97O

5,010

5,180

3.67O

4,060

4,090

3,940

3,940

5,880

5,860

5,970

4,160

3,670

3,290

5,080

5,04O

5,060

117,010

5,775

252,100

Apr.

2,880 

2,680

2,520

2,420

*2,420

2,410

2,480

2,480

2,530

2,760

2,750

2,6OO

2.52O

2,470

2,40O

2,320

2,290

2,260

2,290

2,440

5.590

2,460

2,400

2,570

2,500

2,250

2,150

2,010

1,910

* 1.840

73,000

2,433

144,800

May

1,780 

1,750

1,810

2,440

2.68O

2,490

2,68O

2,480

2,290

2,190

2,140

1,970

1,840

1,750

1,670

1,640

1,620

1,620

1,660

1,590

1,550

1,490

1,450

1,400

1,540

1,280

1,220

1,160

1,120

1.100

1,180

54,540

1,755

107,800

June

1.220 

1,080

1,020

995

96O

920

880

850

815

8OO

768

746

*728

710

685

660

658

620

656

638

602

570

548

530

512

498

477

449

*425

417

21,415

714

42,480

July

4O9 

4O2

398

591

580

370

363

356

346

335

326

320

320

317

311

299

290

278

263

258

246

229

*238

201

190

180

172

158

143

155

150

8,754

282

17,560

Aug.

130 130"

125

125

120

115

115

115

110

110

110

105

105

1OO

100

98

96

94

94

92

92

90

90

90

88

88

86

86

84

84

84

3,151

102

6,250

Sept.

82 

82

82

 So- 80

so

82

82

84

86

90

94

100

110

105

100

98

98

100

105

110

115

Tl5

110

110

105

105

100

100

100

2,890

96.3

5,750

Calendar year 1955: Max 60,000 Min 56 Mean 1,555 Ac-ft 1,110,000

Water year 1955-56: Max 60,000 Min 70 Mean 2,954 Ao-ft 2,144,000

Peak discharge (base, 8,000 cfs). Dec. 19 (4:30 a.m.) 24.000 cfs (22.15 ft); Dec. 22 (time unknown)

74,700 cfs (39.4 ft); Jan. 5 (2 a.m.) 9,650 cfs (15.25 ft); Jan. 7 (9 a.m.) 10,200 cfs (is. 55 ft);

Jan. 15 (4:30 p.m.) 39,800 cfs (28.21 ft); Jan. 25 (5:50 a.m.) 15,800 cfs (18.56 ft); Feb. 21 (6:30

p. m.) 41,200 cfs (28.65 ft).

Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for Trinity River at Lewlston 

and Hayfork Creek near Hyampom.

Note. Doubtful or no gage-height record July 30 to Sept. 50; discharge estimated on basis of records for nearby streams.
574 KLAMATH RIVER BASIN

Trinity River near Hoopa, Calif.

Location. Lat 41°01'50", long 123°39 I 05", in SE£ sec. 31, T. 8 N., R. 5 E., in Hoopa 

Indian Reservation, on left bank 0.7 mile downstream from Campbell Creek and 1^- miles 

southeast of Hoopa.

Drainage area. 2,846 sq mi.

Records available. October 1911 to January 1914, November 1916 to August 1918, October 

1931 to September 1956. Published as "at Hoopa" 1911-14, 1916-18.

Gage. Water-stage recorder. Altitude of gage is 315 ft (from river-profile map). Prior 

TO October 1931, staff gage at site 2.1 miles downstream at different datum.

Average discharge. 27 years (1911-13, 1931-56), 5,644 cfs (4,086,000 acre-ft per year).

Extremes. Maximum discharge during year, 190,000 cfs Dec. 22 (gage height, 36.90 ft), 

from rating curve extended above 56,000 cfs; minimum, 378 cfs Oct. 4, 5.

1911-14, 1916-18, 1931-56: Maximum discharge, that of Dec. 22, 1955; minimum, 

162 cfs Oct. 4, 1931.

Remarks. Records good except those above 100,000 cfs, which are fair. Small diversions 

above station for mining and irrigation. Records of chemical analyses for the water 

year 1956 are given in WSP 1453.

Revisions. WSP 1395: Drainage area.

3.1 

3.5 

4.0 

5.0 

6.0

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

feet per second)

Oct. 1 to Dec. 21

380

510

715

1,280

2,160

8.0

11.0

16,0

24.0

4,830

13,000

30,800

74,300

Dec. 22 to Feb. 21

11.0

12.0

14.0

16.0

26.0

35.0

6,000

7,700

12,800

23,500

88,000

168,000

Feb. 22 to Sept. 3O

4.9 

5.5 

6.0 

8.0

470

935

1,380

3,540

11.0

14.0

16.0

7,900

14,500

23,500

Note.--Same as preceding 

table above 16.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ao-ft

Oct.

389 

380

383

380

383

386

383

386

383

482

*510

520

538

BTf

482

468

447

437

431

437

450

458

450

*447

447

514

531

510

517 

503

496

14,045

453

27,860

Nov.

503 

500

492

B34

581

630

613

589

565

542

520

503

553

585

589

674

768

1,100

3,840

15, 600

11,900

5,600

4,180

3,700

3,220

3,440

4,120

4,140

3,780

3,420

75,781

2,526

150,300

Dec.

4,720 

5,450

4,490

5.740

4,070

13,200

10,100

6,790

8,140

7,460

7,010

8,110

7,250

6,310

5,720

6,380

8,500

21,700

51,600

61,300

68,500

158,000

115,000

71,200

45,500

39,100

34,000

28,100

23,500

19,100

15,800

869,840

28,060

*1,725

Jan.

14, 200 

12, 700

11, 700

*14, 700

22, 600

20, 100

25,000

26,600

21,100

19,900

23,000

22,300

24,700

43,700

92,100

84, 400

54,400

41,700

34,700

32,400

31,100

31,200

43,500

*35,400

29,100

25,500

24, 500

21,600

18,900

16,600

14, 900

934,300

50, 140

11,853

Feb.

15,200 

*12, 100

11,500

10, 800

10, 300

9,780

8,640

8,100

7,840

7,540

7,340

7,220

7,220

7,180

6,960

6,720

6,540

6,380

6,260

8,550

44, 300

59,400

41,100

28,300

21,800

17,600

14,700

13,600

15,400

424,170

14,630

841,300

Mar.

12, 400 

11,900

12,000

12, 500

12, 600

11,700

10,900

10, 500

10, 300

10, 200

10,000

9,720

9,520

9,520"

9,590

9,700

10, 100

11, 100

11,900

12,000

11, 600

11,700

11,700

12,000

12, 800

15.400

12,300

11,100

10, 500

10, 600

10, 800

546,650

11, 180

687,600

Apr.

10,200 

9,610

*9 , 110

8.840

8,930

9,160

9,450

9,840

10, 100

11,000

11,700

11,000

10,000

9,800

9,840

9,840

9,700

9,900

10,300

11,600

13,200

15,800

15,900

14.200

13,000

11, 500

10,500

9,700

9,450

9,410

318,580

10,620

631,900

May

9,480 

*9,780

10, 300

11,900

12.600

11,500

11, 600

10, 700

9,860

9,660

9,500

8,870

8,330

8.060

8,130

8,910

10,200

11,000

12,200

12,400

11, 600

11,500

12, 200

11,600

10, 500

9,880

9,540

8,800

8,570 

9,030

9,940

318,140

10,260

651,000

June

9,480 

8,570

8,460

8,400

7,560

6,850

6,490

6,520

6,780

6,960

6,750

6,270

*6,140

6,040

6,050

5,650

5,500

5,150

5,510

5,580

5,020

4,760

4,710

4,640

4,420

4,270

4,210

4,320

4,180 

5.940

178,920

5,964

354,900

July

5,650 

3,370

5,150

2,950

2,800

2,680

2,600

2,600

2,590

2,520

2,400

2,340

2,330

2,230

2,140

2,060

2,010

1,990

1,950

1,900

1,830

1,750

1,660

1,650

*1,580

1,550

1,500

1,450

1,360 

1,290

1,240

67,060

2,163

153,000

Aug.

1.190 

1,150

,150

,090

,070

,050

,040

,020

994

960

944

918

892

858

842

826

818

810

802

786

786

762

746

750

722

698

690

675

668 

652

658

26,957

870

55,470

Sept.

ET3" 650 

600

592

578

570

555

555

548

548

555

562

570

562

562

555

540

555

526

555

600

592

578

555

555

519

505

491

4"98 

498

16,680

556

55,080

Calendar year 1955: Max 158,000 Mln 318 Mean 5,208 Ac-ft 3,770,000

Water year 1955-56 : Max 158,000 Mln 380 Mean 9,812 Ac-ft 7,122,000

Peak discharge (base, 22.000 cfa). Dec. 19 (12 p.m.) 77,100 cfs (24.43 ft); Dec. 22 (12 m.) 

190,000 cfs (36.90 ft); Jan. 5 (9 to 10 a.m.) 25,900 cfs (16.06 ft); Jan. 7 (10 p.m.) 29,900 cfs 

(17.07 ft); Jan. 11 (6 p.m.) 25,900 cfs (16.07 ft); Jan. 15 (9:50 p.m.) 108,000 cfs (28.60 ft); 

Jan. 25 (10 a.m.) 45,800 cfs (19.72 ft); Feb. 21 (10 p.m.) 75,600 cfs (25.95 ft).

* Discharge measurement made on this day.

t Expressed in thousands.
KLAMATH RIVER BASIN 575

Klamath River near Klamath, Calif.

Location. Lat 41°30'45", long 123 0 58'30", in SW£ sec. 17, T. 13 N., R. 2 E., on right bank 

2. 8 miles upstream from Tux-war Creek and 3.3 miles east of Klamath.

Drainage area. 12,100 sq mi, approximately.

Records available. December 1910 to June 1926, October 1950 to September 1956. Published 

as "near Requa 1 ' 1910-26.

Gage. Water-stage recorder. Datum of gage is 5.60 ft above mean sea level (levels by 

Corps of Engineers). Prior to June 1926, staff gage at same site at different datum.

Average discharge.--20 years (1911-25, 1950-56), 17,390 cfs (12,590,000 acre-ft per year).

Extremes. Maximum and minimum discharges for the water years 1918-20, and 1956 are contained in the following table:

Water 

year

1918 

1919 

1920 

1956

Maximum

Date

Dec. 1, 1917 

Jan. 18, 1919 

Apr. 17, 1920 

Dec. 22, 1955

Discharge 

(cfs)

*65,300 

*133,000 

*27,900 

**425,000

Gage height 

(feet)t

18.8 

t27.4 

13.0 

J49.7

Minimum

Date

Aug. 11, 12, 1918 

Aug. 21, 1919 

Aug. 22, 23, 1920 

Oct. 25, 1955

Discharge 

(cfs)

*1,430 

*2,020 

ttl,560 

tt2,220

* Observed.

** Prom rating curve extended above 140,000 cfs on basis of flood-routing 

study.

t Daturas then in use. 

tt Minimum daily, 

t From floodmarks.

1910-26, 1950-56: Maximum discharge, that of Dec. 22, 1955; minimum observed, 1,340 

cfs July 31, Aug. 1, 1924.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Plow considerably regulated by reservoirs and powerplants above station. Large diversions for irrigation above station. Records of chemical analyses for the water year 1956 

are given in WSP 1453.

Revisions (water years). WSP 1285: 

1918-S

_ _ __^ 1951(P). Revised figures of discharge for the water 

years 1918-20 (complete daily tables)", superseding those published in WSP 481 and 511, 

are given herein.

Discharge, in cubic feet per second, water year October 1917 to September 1918

Day

1 

Z

5

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

AC- ft

Oct.

2,760 

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2,760

2.660

2,760

2,860

2,860

2,860

2,860

2,860

2,860

2,860

2,860

2,860

2,860

2,860

2 980 

2)980

2,980

2,980

87,440

2,820

173,000

Nov.

3,100 

3,100

3,100

3,240

3,380

3,720

4,500

3,720

3,720

3,380

5,420

5,420

5,420

3,720

2,860

2,660

2,660

2,580

2,510

2,660

2,860

. 2,860

2,580

2,580

2,440

2,230

2,160

2.090 

9,400

54 , 900

------

134,970

4,500

268,000

Dec.

65.500 

31,300

15 , 600

12,400

8,200

*

I

\ 6,600

J

. 6,100

.

1

V 28, 000

23,000

14,400

406,700

13 , 100

812,000

Jan.

13,200 

11,700

12,000

12 , 800

12,000

11,400

12 , 800

12 , 800

12,800

12,000

12,000

21,200

22,100

25.000

21,600

19,000

18,500

18,500

12,400

12,400

12,400

10,700

10.000

10 400

10^400

10,700

11,000

11,400 

11,000

10,700

10,700

422,800

13,600

836,000

Feb.

10.000 

10,700

12 , 800

15,600

19,000

23,000

25,400

55.700

51,500

24,800

19,400

19,000

18,500

19,400

20,500

22 , 100

22,600

25,000

21,200

18,500

17,600

16,000

16,400

17,200

17,200

18,500

17,600

16,400

-

------

547,200

19,500

*1,080

Mar.

16,000 

16,000

16,000

16,000

15,600

15,600

15 . 200

15,200

15,600

15,600

16,000

17,600

19,400

18,500

17,200

18,500

25,000

26,800

27,900

50,700

27,400

25,800

26,800

27,900

59.700

57,500

35,100

28,400 

26,400

27,400

27,900

700,500

22,600

*1,590

Apr.

27,900 

26,800

24,400

21,200

20,500

19,400

19,400

19,400

25,000

51.500

28,400

24,800

19,000

19,400

19,000

18,500

18,500

18,500

17,600

18,000

17,200

16,800

16,800

17,200

17,600

17,600

16,400

16,000 

15.200

15,200

- -----

600,800

20,000

*1,190

May

15,600 

16,000

16,000

16.800

15,200

14,000

15,600

12,800

12,000

11,400

11,400

11,000

10,700

10,400

10,000

9,400

8,800

8,800

8,800

8,500

8,500

8,500

8,200

8,200

8,200

7,900

7,900

7,600 

7,600

7,520

7j_Q40

528,160

10,600

652,000

June

7.100 

6,800

6,550

6,550

6,500

6,650

6,500

6,500

6,200

5,900

5,620

5,540

5,200

4,800

4,410

4,040

5,820

5,710

5,600

5,600

5,500

5,400

3,220

3,150

3,040

2,960

2,880

2,800 

2,800

2.720

------

159,440

4,650

277,000

July

2j720 

2,640

2,560

2,490

2,420

2,560

2,560

2,290

2,120

2,120

2,120

2,120

2,120

2,060

2,060

2,000

1,950

1,900

1,850

1,800

1,760

1,720

1 . 680

1,800

1,800

1,800

1,760

1,760 

1,760

1,720

1,720

65,540

2,040

126,000

Aug.

1.680 

1,680

1,640

1,640

1,600

1,560

1,550

1,550

1,500

1,500

1.450

1,450

1,460

1,500

1,560

1,600

1,640

1,640

1,680

1,640

1,600

1,600

1,640

1,640

1,600

1,560

1,550

1,460 

1,460

1,500

1,560

48,590

1,570

96,400

Sept.

1,560 

1,640

1.550

*1,560

1,600

1,640

1,640

1,720

1,680

1,640

1,680

1,680

1,680

1,760

1,760

1,950

1,850

2.290

2,060

2,060

2,170

2,060

1,950

2,060

2,060

2,000

2,060

2,170 

2,120

2,170

55,800

1,860

111,000

Calendar year 1917: Max 73,700 Min 2,090 Mean 14,000 Ao-ft 10,100,000

Water year 1917-18: Max 65,300 Min 1,430 Mean 9,690 Ao-ft 7,010,000

* Discharge measurement made on this day. 

t Expressed in thousands.
576 KLAMATH RIVER BASIN

Klamath River near Klamath, Calif.--Continued 

Discharge, In cubic feet per second, water year October 1918 to September 1919

Day

1 

2

3 

4 

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Ac-ft

Oct.

2,420 

2,720

2,800 

2,880 

3,040

3,220

3,220

3,040

2,720

2,560

2,420

2,420

2.290

2,420

2,720

2,640

2,720 

2,720

2,720

2,720

2,640

2,560

2,640

2,420

2,490

2,420

2,420

2,420

2,560

3,220

4.540

84,740

2,730

168,000

Nov.

5,060 

5,340

5,060 

4,540 

4,290

4,040

5.220

3,220

3,400

4,540

5,340

7,400

8,360

8,680

10.600

10,600

10,600 

8,680

7,400

5,900

5,060

5,060

5,340

5,060

5,060

5,200

5,060

4,800

4,670

4,670

176,250

5,880

350,000

Dec.

4,940 

4,720

4.500 

4,500 

4,940

7,900

8,500

9,400

8,500

7,600

8,200

8,200

8,200

7,900

8,200

8,200

8,800 

10,400

10,700

11,400

11.700

10,000

9,720

8,800

8,200

7,600

7,040

6,480

6,200

5,940

5,680

243,060

7,840

482,000

Jan.

5,420 

5,420

5,420 

5,420 

5,420

5,420

5,420

5 . 180

5*940

7,600

8,500

9,720

10,700

12,400

17,600

29,000 

110,000

68,100

62,500

52,700

42,100

39,700

38,500

35,500

34,300

31,900

27,400

20,300

19,000

18,000

750,260

24,200

tl,490

Feb.

16,400 

14,400

11,400 

11.000 

11,400

11,400

16,400

27,900

68,100

100.000

81,700

69,500

52,700

40,900

39,700

34,300

39,100 

38,500

38,500

31,900

30,700

29,000

27,900

23,900

23,000

28,400

33,700

38,500

990,300

35,400

tl,970

Mar.

37,900 

36,700

67.400 

47,100 

42,700

40,900

39,700

38,500

37,300

31,300

27,900

24,800

24,400

24,400

23,900

23,400

25.000 

25,800

27,400

28,400

29,000

29,600

30,700

31,900

33,100

33,700

34,300

33,700

33,700

34,900

36,100

*1P33.6

33,300

*2,050

Apr.

36,700 

36,100

45,700 

54,800 

59.700

55,500

37,900

34,300

34,300

36,100

37,900

37,900

31,900

50 . 100

33,700

37,300

42 , 100 

51,300

49,200

47,100

40,300

39,700

37,900

36,100

35,500

36,100

35,500

34,900

33,700

35,500

*1,194.8

39,800

*2,370

May

37,300 

58.500

33,700 

33,100

31,300

29,600

27,900

25,800

25,400

23,900

23,000

21,600

21,600

21,200

21,600

20,300

20,300 

19,400

18,500

21,200

23,400

23,400

23,900

23,900

23,400

23,000

22,100

21,200

19,400

17,600

16,800

753,300

24,300

tl,490

June

14,400 

14,400

14,400 

14 . 800 

14,400

14,400

14,000

13,600

12,800

12,000

10,700

10,000

10,000

10,400

10,400

10,000

10 , 400 

10,400

10,000

10,000

10,000

8,800

8,800

8,800

8,800

8,800

8,500

8,500

8,200

7.900

328,600

11,000

655,000

July

7.720 

7,400

7,100 

6,800 

6,500

6,200

6,200

6,200

5,900

5,620

5,340

5,060

4,930

4,800

4,670

4,540

4,410 

4,280

4,160

4,280

4,040

3,820

3,400

3,220

3,040

2,880

2,850

2,720

2,720

2>640

2,720

146,160

4,710

290,000

Aug.

2,800 

2.880

2,720 

2,640 

2,560

2,560

2,490

2,420

2,420

2,420

2,360

2,290

2,230

2,230

2.170

2,230

2,230 

2,230

2,290

2,290

*2,360

2,420

2,420

2,360

2,290

2,360

2,360

2,360

2,290

2,290

2,230

74,200

2,390

147,000

Sept.

2.250 

2,230

2,290 

2,360 

2,420

2,420

2,560

2.640

2,640

2,560

2,560

2,560

2,490

2,420

2,360

2,420

2,490 

2,420

2,360

2,420

2,560

2,640

2,560

2,490

2,420

2,360

2,360

2,360

2,290

2,290

73,180

2,440

145,000

Calendar year 1918: Max 39,700 Mln 1,430 Mean 9,340 Ac-ft 6,760,000

Water year 1918-19: Max 110,000 Mln 2,170 Mean 16,000 Ac-ft 11,600,000

* Discharge measurement made on this day.

* Expressed In thousands.

Discharge, In cubic feet per second, water year October 1919 to September 1920

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

5.220 

3,040

2,880

2,720

2.560

2,640

2,720

2,720

2,720

2,720

2,560

2,560

2,560

2,560

2,560

2,560

2,560

2,560

2,720

2,720

2,640

2,560

2,560

2,640

2,720

2,720 

2,800

2,880

2,960

2,720

2 , 640

83,700

2,700

166,000

Nov.

2.720 

2,880

3,400

4,310

4,040

3,600

3,500

3,500

3,400

3,400

3,600

3,820

3,600

3,400

3,400

3,400

3,400

3,500

3,600

3,600

3,600

3,600

3,600

3,600

3,500

3,500 

3,220

3,040

3,600

5,620

106,950

3,560

212,000

Dec.

8,800 

8,800

10,000

7,040

4.920

5,680

7,040

6,760

6,480

6,200

8,800

14,800

12,000

7,600

6,200

6,200

6,200

8,500

12,400

16,000

18.500

18,000

16,800

16,800

16,800

16,800 

16,800

16,400

16,000

14,400

12,800

350,520

11,300

695,000

Jan.

12.400 

8,800

8,200

8,200

8,500

8,500

7,900

7,600

7,040

6,760

6,760

6,480

6,480

6,480

6.200

6,480

6,480

6,480

6,480

6,480

6,480

6,480

6,760

7,040

7,040

7,320 

7,600

8,200

9,400

8,800

8,500

232,320

7,490

461,000

Feb.

8.200 

7,600

7,600

7,600

7,320

7,040

7,040

7,040

6,480

6,480

6,200

5,940

5,940

5,940

5,940

5,940

5,940

5,680

5,680

5,680

5,680

5,680

5.420

5,420

5,420

5,420 

5,680

5,940

5,680

181,620

6,260

360,000

Mar.

5.420 

5,420

5,420

5,940

5,940

5,680

5,680

7,040

8,800

8,800

8,800

8,500

8,200

10,700

15,200

14,400

14,000

13,600

13,600

14,000

15,600

16,000

16.800

16,800

16,800

16,800 

16,800

14,400

10,700

12,400

13,200

351,440

11,300

695,000

Apr.

14,400 

15,200

16,400

16,800

16,800

16,000

14,400

16,400

18,500

18,500

19,400

18,500

17,600

17,200

16,800

19,800

27.900

22,600

21,200

 20,300

19,000

16,800

14,400

14,400

14,000

15 . 600 

15,600

16,800

17,200

17,600

524,100

17,500

*1,040

May

16.000 

14,400

14,400

13,200

12,800

13 , 600

13,600

14,400

15,600

15,200

15,200

14,800

14,400

14,000

13,600

13,600

14,000

14,400

13,600

12,800

12,800

11,400

14,400

10,000

9,400

9,100 

8,800

8,500

8,200

7,900

7.600

391,700

12,600

775,000

June

7,040 

7,040

6,760

6,480

6,200

5,940

7,040

7,320

8.200

7,600

6,760

5,940

6,480

7,040

7,600

7,600

7,900

7,600

6,760

6,480

5,940

5,680

5,420

5,170

4,920

4,690 

4,460

4,460

4.250

4,230

188,980

6,300

375,000

July

4,040 

4.410

4,410

4,160

4,040

3,930

3,820

3,600

3,500

3,400

3,310

3,310

3,220

3,130

3,040

3,040

2,960

2,880

2,720

2.560

2,560

2,560

2,640

2,720

3,040

3,600 

4,160

3,220

2,560

2,560

2 ,560

101,660

3,280

202,000

Aug.

2.590 

2,590

2,410

2,410

2,590

2,590

2,410

2,410

2,250

2,090

1,810

1,810

1,810

2,090

1,950

1,810

1,810

1,810

1,810

1,810

1,680

1.560

1,560

1,680

1,810

1,950 

1,950

1,810

 1,810

 1,810

2,090

62,570

2,020

124,000

Sept.

2,090 

2,090

1,950

1.810

l,8lO

1,810

1,810

1,810

1,810

1,950

1,810

1,810

1,950

2,410

2,410

2,410

2,410

2,410

2,250

2,090

1,810

2,090

3,160

3,570

4,010

4.250 

3,790

3,570

3,160

3,360

73,650

2,460

146,000

Calendar year 1919: Max 110,000 Mln 2,170 Mean 16,100 Ac-ft 11,700,000

Water year 1919-20: Max 27,900 Mln 1,560 Mean 7,240 Ac-ft 5,250,000

* Discharge measurement made on this day.

* Expressed In thousands.
KLAMATH RIVER BASIN 

Klamath River near Klamath, Calif. Continued

577

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Feb. 22 Feb. 22 to Sept. 30

3.6 

4.0 

4.5 

5.0 

7.0 

10.0

1,950

2,400

3,000

3,700

8,100

18,500

14.0

19.0

33.0

47.0

48.0

39,000

75,000

200,000

362,000

384,000

3.6

5.0

7.0

11.0

17.0

22.0

2,820

4,900

9,850

26,000

64,000

104,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,930 

2,920

2,600

2,400

2,400

2,880

2,740

2,920

2,930

*3,310

3,740

3,500

3,530

3,390

3,140

3,170

2,810

2,400

2,810

3,420

3,030

3,840

3,450

2,690

*2.220

3,280

4.060 

4,020

3,900

3,740

3,620

97,790

3,151

194,000

Nov.

2.890 

3,560

4,170

4,130

4,460

3,830

3,700

3,720

3,950

4,100

4,760

3,950

3,410

3,390

3,180

4,350

5,200

6,120

28,200

45 . 900

35,100

*20,200

17,100

16,300

14,100

15,100

17,900 

16,100

14,600

13,400

326,870

10,900

648,300

Dec.

22,000 

-25,900

21,300

16,700

14,900

34,600

37,000

27,200

30,700

28,700

26,900

29,200

27,800

24,300

21,900

24,400

30,200

50,400

100,000

146,000

171,000

378,000

245,000

169,000

115,000

98,300

89,300 

73,800

61,800

53,300

46,400

*2,250

72,580

*4,463

Jan.

43,500 

40,200

58.000

49,400

68,200

58,800

60,000

64,400

54,800

54,100

58,000

56,200

58,300

89,000

211,000

*215,000

141,000

109,000

93,800

90,900

89,600

96,300

136,000

110,000

88,800

77,400

73,800 

65,900

56,900

50,400

45,300

*2,542

82,000

*5,042

Feb.

41,100 

36,800

34,100

32,600

31,400

29,600

29,000

28,200

27,000

25,200

24,000

23,900

23,800

23,400

22,400

21,400

21,000

20,800

20.600

30,200

96,300

136.000

101,000

77,900

65,400

57,500

50,300 

46,700

48,000

$1,225.6

42,260

*2,431

Mar.

44,000 

41,400

42 , 900

46,500

48,000

43 , 700

39,700

37,300

36,200

35,600

34,600

32,700

32,000

32,000

51.900

32,200

55,900

57,400

40,000

40,900

40,000

40,300

40,700

41, 600

43,800

49.200

46,200 

41,600

58,800

38,300

40,300

«.,225.7

39,470

*2,427

Apr.

39,000 

36,800

54,600

55 . 000

33,100

55,700

34,500

35,800

56,700

39,700

42,800

41,300

58,200

58,000

58,600

58,500

57,600

57,900

58,800

42,700

48,000

50.200

49,600

50,000

48,000

45,400

59,900 

56,600

55,100

54,500

1 1,186 . 6

39,550

*2,354

May

34,500 

35,100

56,500

41,100

45.400

40,700

40,100

57,300

34,500

35,500

53,800

31,800

29,800

28,800

29,000

51,200

55,700

38,900

42,000

43 , 400

41,000

40,600

42,500

40,500

36,700

34,500

51,900 

28.400

50^600

52,600

£1,108.6

55,760

*2,199

June

51.900 

28,900

28,200

27,600

25,300

22,600

21,400

21,500

22,600

25,100

22,900

21,500

20,200

20,000

20,200

18,900

17,500

17,300

19,200

20,000

17,800

16,500

16,200

15,900

14,600

15 . 800

14,200 

14,800

14, 600

14,200

603,400

20,110

tl,197

July

15 . 800 

15,200

12,700

12,400

12,000

11,600

11,000

10,500

10,100

9,900

9,800

9,700

9,800

10,000

9,900

9,600

9,000

8,000

7,000

6,400

6,100

5,940

4,850

4,860

5,640

5,900

5,900 

6,100

5,540

4,510

4.160

265,700

8,571

527,000

Aug.

5,140 

5,100

5.500

5,100

4,560

5,660

4,050

4,790

5,200

5,060

4,540

4,560

5,980

5,520

4,530

4,650

4,790

4,510

4,520

5,590

5,650

4,190

4,810

4,540

4,700

4,580

3,830 

5.140

3,950

4,250

4,430

156,580

4,406

270,900

Sept.

4,280 

4,190

3,900

3,200

5,200

4,250

5,870

5,870

5,900

4,270

5,410

5,760

3,980

3,890

5,840

4,000

5,620

2,950

4,160

4,250

4,550

4,550

4,410

5,520

2.850

4,220

4,760 

4,790

4.850

4, 680

119,530

5,984

257,100

Calendar year 1955: Max 378,000 Mln 1,900 Mean 15,020 Ac-ft 10,880,000

Water year 1955-56: Max 378,000 Mln 2,220 Mean 30,290 Ac-ft 21,990,000

Peak discharge (base. 50.000 cfs). Nov. 20 (2 a.m.) 55,600 cfs (16.25 ft); Dec. 20 (6 a.m.) 

160,000 cfs (28.60 ft); Dec. 22 (1:50 p.m.) 425,000 cfs (49.7 ft); Jan. 5 (11:50 a.m.) 69,900 cfs 

(18.36 ft); Jan. 8 (3 to 6 a.m.) 67,200 cfs (18.02 ft); Jan. 15 (11 p.m.) 252,000 cfs (58.25 ft); 

Jan. 25 (8 a.m.) 142.000 cfs (26.60 ft)j Feb. 22 (4 a.m.) 147,000 cfs (27.12 ft); Apr. 22 (11 a.m.) 

50,900 cfs (15.13 ft).

* Discharge measurement made on this day.

* Expressed in thousands.

Note.--No gage-height record Oct. 3-5, June 28 to July 19; discharge estimated on basis of records for upstream stations.
578 KLAMATH RIVER BASIN

Smaller reservoirs in Klamath River basin, Oreg.

Fourmile La ke. - -Lat 42°27', long 122°14>, in NW£ sec. 9, T. 36 S., R. 5 K., at dam at outlet of Fourmile Lake, 8 miles west of Recreation. Drainage area, 15 sq mi, approximately. Records available, June 1933 to September 1930, June 1932 to September 1956. 

Staff gage with datum at mean sea level, irrigation company datum. Gage read once a 

month October to May, several times a month June to September. Maximum contents observed 

during year, 15,550 acre-ft July 4, 6, 10, 12, 20, 22 (elevation, 6,002.4 ft); minimum 

observed, 1,790 acre-ft Oct. 27 (elevation, 5,983.29 ft). Maximum contents observed during periods 1923-30, 1932-56, 16,610 acre-ft June 26, 1953, May 18, 30, 1954 (elevation, 

6,003.5 ft); no usable contents at times.

Reservoir is formed on natural lake by rock-faced earth dam, completed by Rogue River 

Valley Canal Co. about 1922. Capacity, 13,330 acre-ft between elevations 5,980 ft (sill 

of outlet gate) and 6,000 ft (crest of spillway, on which flashboards are placed to increase contents to 18,100 acre-ft at elevation 6,005 ft). Figures given herein represent usable contents. During irrigation season, all water diverted to Fish Lake in the 

Rogue River basin for irrigation of lands near Medford.

Hyatt Prairie Reservoir. Lat 42°10', long 122°28', in sec. 16, T. 39 S., R. 3 E., at dam 

of Talent Irrigation District on Keene Creek, 3 miles north of Ashland-Klamath Falls 

highway and 20 miles east of Ashland. Drainage area, about 10 sq mi. Records available, 

December 1922 to September 1956. Staff gage with datum at mean sea level, Irrigation 

District datum. Gage read one or two times a month October to March, one or two times 

a week April to September. Maximum contents observed during year, 16,400 acre-ft 

June 21 (elevation, 5,016.25 ft); minimum observed, 325 acre-ft Oct. 8 (elevation, 

4,987.0 ft). Maximum contents observed during period 1922-56, 18,540 acre-ft May 3, 

1954 (elevation, 5,018.5 ft); no usable contents at times.

Reservoir is formed by rock-faced earth dam, completed by Talent Irrigation District 

in 1923; storage began in December 1922. Capacity, 16,180 acre-ft between elevations 

4,981.7 ft (sill of gate, approximate) and 5,016.0 ft (spillway crest on which 2.0 ft 

flashboards are placed to increase contents to 18,050 acre-ft). Dead storage negligible. During irrigation season all water is diverted to Rogue River basin for irrigation of lands near Ashland and Talent.

Other reservoirs. There are 6 other small reservoirs in Williamson River basin, and 8 in 

Lost River basin, having a total capacity of 12,300 acre-ft. (See also Gerber Reservoir 

and Clear Lake Reservoir, in "Records obtained by agencies other than the Geological 

Survey," p. n).

Month-end elevation and contents, water year.October 1955 to September 1956

Date

Calendar year 1955 ........

Mav 31

Sept. 30..................... 

Water year 1955-56. .......

Four-mile Lake

El ovation 

(feat)t

5,989.0

-

5,990.9 

5,995.0

6,001.2

Contents 

(acrefeet)

1,620 

1,900 

2,600 

5,200

-

6,410 

7,300 

8,300 

9,250 

12,200 

15,500 

15,400 

15,000 

14,420

Change In 

contents 

(acre-ft)

+280 

+700 

+2,600

-3,330

+1^210 

+890 

+1,000 

+950 

+2,950 

+3,300 

-100 

-400 

-580

+12,800

Hyatt Prairie Reservoir

Elevation 

(feet)t

1

-

5,015.8 

5,006.6

Contents 

(acrefeet)

297 

520 

1,200 

3,200

-

5,300 

6,400 

7,400 

11,900 

16,000 

16,200 

13,500 

10,400 

8,810

Change In 

contents 

(acre-feet)

+223 

+680 

+2,000

-6,190

+2,100 

+1,100 

+1,000 

+4,500 

+4, 100 

+200 

-2,700 

-3,100 

-1,590

+8,510

t Hour of reading not known.

Note. Contents Interpolated for days on which gage was not read.
SMITH RIVER BASIN 579

South Pork Smith River near Crescent City, Calif.

Location. Lat 41°47'30", long 124°01'30", in SE£ sec. 11, T. 16 N., R IE 300 ft 

downstream from Craigs Creek, 2.0 miles upstream from mouth, and 9.5 miles east of 

Crescent City.

Drainage area. 295 sq mi.

Records available. September 1911 to September 1913, August 1954 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 150 ft (from topographic map). Sept 9, 

1911, to Sept. 30, 1913, staff gage at site 1.8 miles downstream at different datum.

Extremes. Maximum discharge during year, 108,000 cfs Dec. 22 (gage height, 36.95 ft), 

from rating curve extended above 42,000 cfs on basis of slope-area determination of 

peak flow; minimum, 106 cfs Sept. 30.

1911-13, 1954-56: Maximum discharge, that of Dec. 22, 1955; minimum, 100 cfs 

Sept. 13, 1955.

Remarks. Records excellent. No storage or diversion.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 23 to Sept. 30

4.8 

5.0 

5.5 

6.0 

8.0 

10.0

100

140

276

450

1,520

3,330

12.0

15.0

19.0

24.0

30.0

5,900

11,300

19,900

34,500

61,500

4.6 100

5.5 334

6.5 725

8.0 1,660

10.0 3,600

13.0 7,900

18.0 17,600

24.0 34,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ao-ft

Oct.

113

111

111

125 

136

134

123

127

153

1.620

629

354

270

222

194

178

165

158

151

149

144

142

138

*132

151

337

252

210

194

196

225

7,344

237

14,570

Nov.

389

364

302

330 

494

466

378

318

276

249

231

222

261

267

231

402

855

2,160

19.700

7,900

*4,250

2,590

4,270

3,890

3,220

4,400

4,400

2,990

2,280

1,970

70,055

2,335

139,000

Dec.

7,030

5,100

3,780

2,760 

3,230

8,430

5,560

4,780

6,160

4,180

4,010

3,710

3,110

*2,560

2.520

5,240

4,950

11,300

14,500

13,900

38,100

*59.700

17,900

10,800

9,010

14,100

10,100

6,800

4,920

3,800

3,070

294,910

9,513

584,900

Jan.

3,260

3,300

4,850

9,480 

*8,370

6,300

*7,070

5,660

5,490

8,940

9,610

6,920

7,000

12,500

52.100

16,900

10,300

8,640

7,400

7,920

7,450

17,700

15,200

9,030

6,330

5,130

5,270

4,410

3,460

*2,890

2.480

261,360

8,431

518,400

Feb.

2,200

1,960

1,790

1,660 

1,560

1,470

1,400

1,350

1,280

1,220

1,180

1,150

1,150

1,100

1,050

979

*1,060

962

1,200

10,800

30 . 500

13,500

8,070

5,470

4,950

4,010

3,970

4,330

5,970

117,091

4,038

232,200

Mar.

4,330

3,340

4,660

6.260 

*4,850

3,400

2,720

2,480

2,540

2,320

2,080

1,880

1.790

1,820

1,820

1,940

2,180

2,550

2,500

2,230

2,100

2,290

2,430

2,470

3,220

4,550

3,160

2,610

2,380

2,580

3,330

88,810

2,865

176,200

Apr.

2.980

2,520

2,200

2,060 

2,060

1,960

*2,030

2,020

2,140

2,560

2,320

2,050

1,920

1,930

1,860

1,740

1,760

1,820

2,180

2,710

2,660

2,640

2,470

2,340

2,080

1,960

1,770

1,530

1,430

1.400

63,100

2,103

125,200

May

1,420

1,480

1,570

2.720 

2,260

2,050

*2,040

1,760

1,540

1,600

1,610

1,400

1,240

1,190

1,310

1,590

1,760

1,780

1,750

1,590

1,420

1,480

1,430

1,190

1,120

1,100

974

886

935

1,080

968

46,243

1,492

91,720

June

858

790

790

800 

702

635

604

594

599

640

599

558

538

*574

566

514

486

474

574

522

474

449

435

421

400

383

373

363

350

331

16,396

547

32,520

July

522

316

310

304 

298

292

286

277

268

263

257

252

268

263

249

236

230

225

217

215

*210

204

202

197

194

189

186

184

181

178

116

7,449

240

14,770

Aug.

123

173

171

171 

171

171

168

166

161

156

154

154

154

151

149

146

146

146

144

144

151

146

139

139

137

135

132

130

128

126

126

4,658

150

9,240

Sept.

123

121

119

117 

117

115

117

117

126

146

171

144

132

128

123

121

119

117

117

121

119

117

113

110

108

108

108

108

108

106

3,616

121

7,170

Calendar year 1955 : Max 59,700 Mln 102 Mean 1,875 Ac-ft 1,358,000

Water year 1955-56 : Max 59,700 Mln 106 Mean 2,680 Ao-ft 1,946,000

Peak discharae (base. 3O.OOO cfs). Nov. 19 (12:30 p.m.) 30,200 cfs (22.75 ft); Dec. 22 (2:3O a.m.)

108,000 cfs (36.95 ft); Jan. 15 (12:30 p.m.) 44,200 cfs (26.50 ft); 'Jan. 22 (7 p.m.) 3O,700 Cfs

(22.90 ft); Feb. 21 (6:30 a.m.) 41,40O cfs (25.85 ft).

Discharge measurement made on this day.
580 SMITH RIVER BASIN

Smith River near Crescent City, Calif.

Location. Lat 41°47'20", long 124°03i20", in SW^ sec. 10, T. 16 N., R. 1 E., on left 

bank 0.5 mile downstream from South Fork and 8 miles east of Crescent City.

Drainage area. 613 sq mi.

Records available.--October 1931 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 90 ft (from topographic map).

Average discharge.--24 years (1931-37, 1938-56), 3,700 cfs (2,679,000 acre-ft per year).

Extremes. Maximum discharge during year, 165,000 cfs Dec. 22 (gage height, 41.20 ft), 

from rating curve extended above 33,000 cfs on basis of slope-area determination at 

gage height 39.51 ft; minimum, 229 cfs Sept. 30.

1931-56: Maximum discharge, that of Dec. 22, 1955; minimum, 168 cfs Oct. 21, 1931.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

No regulation or diversion. Records of chemical analyses for the water year 1956 are 

given -in WSP 1453.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Dec. 22 Dec. 25 to Sept. 30

3.9 

5.0 

6.0 

8.Q 

10.0

224

545

1,000

2,530

4,880

12.0

15.0

19.0

24.0

34.0

8,140

15,000

27,200

50,000

112,000

3.9

4.7 

6.0 

7.5 

9.5

215

400

955

1,950

3,990

13.0

17.0

22.0

28.0

9,240

18,900

40,000

73,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

240 

240

240

265

318

308

278

295

396

5,560

1,700

923

676

548

475

422

389

365

353

341

326

318

308

302

*338

709

562

489

454

496 

580

19,014

613

37,710

Nov.

1,100 

1,010

805

860

1,270

1,150

950

790

680

604

556

528

596

632

542

914

2,130

7,170

45.900

17,000

*8,710

5,510

9,370

8,750

7,530

9,860

9,500

6,290

4,750

5,990

157,427

5,248

512,300

Dec.

15,600 

11,400

8,440

6,040

7,500

18,400

12,400

10,600

13,400

8,560

8,140

8,050

7,020

*5,480

4.820

10,500

11,100

22,900

30,200

27,500

67,800

111,000

40,600

23,300

20,500

38,400

24,200

16,000

11,500

8,000 

7,400

616,750

19,890

*1,225

Jan.

7,600 

7,700

13,800

21,800

18,900

15,800

*17,900

14,500

15,500

20,500

22,600

16,200

16,400

54,000

72.000

59,000

21,500

17,600

16,100

16,900

16,000

37,500

53,200

20,000

14,000

11,200

11,400

9,500

7,700

6,500 

5,500

596,200

1£,230

*'l,183

Feb.

4,800 

4,400

4,000

5,700

5,400

5,200

3,000

2,800

2,580

2,460

2,350

2,330

2,390

2,280

2,150

2,020

*2,140

1.990

2,490

22,700

68.500

29,700

16,000

10,700

9,920

8,150

8,450

9,740

12,800 - ----

251,100

8,659

498,000

Mar.

9,540 

7,410

10,700

14.000

10,400

*7,450

6,000

5,650

6,120

5,500

4,860

4,340

4,070

4,160

4,160

4,440

4,930

5,690

5,580

4,930

4,820

5,920

6,000

5,850

7,860

10,200

7,190

5,930

5,360

5,710 

7,510

202,060

6,518

400,800

Apr.

6.840 

5,780

4,940

4,580

4,510

4,220

*4,530

4,280

4,380

5,100

4,600

4,090

3,870

3,940

3,690

5,580

5,570

3,440

5,990

4,780

5,080

4,550

4,220

3,970

3,490

5,280

2,970

2,620

2,420

. l-.5-4-0.

123,050

4,102

244,100

May

2,330 

2,420

2,520

4.160

3,670

3,260

3,260

*2,840

2,520

2,630

2,710

2,390

2,150

2,050

2,140

2,510

2,680

2,690

2,640

2,450

2,170

2,240

2,200

1,890

1,770

1,740

1,570

1.450

1,510

1,720 

1,560

75,820

2,581

146,400

June

1.410 

1,320

1,320

1,350

1,210

1,110

1,060

1,050

1,060

1,110

1,060

988

955

1,050

*1,060

966

915

890

1,060

995

910

865

825

800

760

752

706

688

656

..JKi

29,505

983

58,520

July

604 

596

584

572

564

556

540

526

508

498

488

477

502

498

474

452

442

424

407

*400

394

585

579

576

570

559

550

545

545

539 

332

14,086

454

27,940

Aug.

326 

324

524

526

542

350

339

329

521

311

310

305

300

295

290

285

280

279

277

274

283

283

268

268

266

264

258

256

252

250 

248

9,085

293

18,020

Sept.

246 

245

259

257

234

232

232

234

245

272

316

281

260

254

250

245

243

241

239

245

246

241

234

250

252

232

232

232

232

230

7,331

244

14,540

Calendar year 1955 : Max 111,000 Min 229 Mean 4,095 Ac-ft 2,964,000

Water year 1955-56 : Max 111,000 Min 330 Mean 5,736 Ac-ft 4,164,000

Peak discharge (base. 56. OOP efaK Nov. 19 (12 m. ) 64,900 cfs (26.57 ft); Dec. 19 (5 p.m.)

(7:30 a.m. } 88,200 cfs (30.42 ft).

Discharge measurement made on this day.

* Expressed in thousands. 

J!o_te..--No gage-height record Dec. 28 to Jan. 5, Jan. 6, 8, 9, 12-14, 19-21, Jan. 24 to Feb. 8, 

Aug. 11-17 S discharge estimated on basis of records for South Fork Smith River near Crescent City.
REVISIONS OP RECORDS FOR DISCONTINUED STATIONS 581

New River near Denny, Calif.

Location. Lat 40°55'06", long 123°24'35", in SE£ sec. 5, T. 6 N., R. 7 E., 2.2 miles 

(revised) south of Denny and 7.75 miles upstream from mouth.

Drainage area. 180 sq mi.

Records available. October 1927 to December 1928 (discontinued).

Gage. Water-stage recorder. Altitude of gage is 1,350 ft (from topographic map).

Extremes. 1927-28: Maximum discharge, 4,700 cfs (revised) Mar. 26, 1928 (gage height, 

9.10 ft), from rating curve extended above 600 cfs by logarithmic plotting; minimum, 

20 cfs Sept. 9, 11, 1928.

Revisions..-^The maximum'discharge for the water year 1928 has been revised to 4,700 

cfs Mar. 26, 1928 (gage height, 9.10 ft), superseding figure published in WSP 671.

Remarks. Pew small diversions for mining.

Revisions.. Revised figures of discharge, in cubic feet per second, for the water year 

1928, superseding those published in WSP 671, are given herewith:

Date

1927

Nov. 15

21

26

27

28

29

30

1928

Jan. 3

4

5

6

7

29

Discharge

699

683

385

647

916

1,020

780

854

944

739

695

603

1,390

Date

1928-Con.

Jan. 30

31

Feb. 1

2

3

4

5

6

/

S

9

Mar. 9

10

11

12

Discharge

1,440

1,180

1,010

930

1,180

1,150

970

855

755

659

599

633

627

671

791

Date

1928-Con.

Mar. 13

14

23

24

25

26

27

28

29

30

31

Apr. 1

2

3

4

Discharge

727

651

890

867

952

3,100

2,890

1,880

1,520

1,300

1,260

1,260

1,200

1,100

993

Date

1928-Con.

Apr. 5

6

7

3

9

10

11

12

13

14

15

16

17

18

19

Discharge

1,020

1,180

1,320

1,370

1,300

1,200

1,080

1,020

945

872

885

1,000

934

930

885

Date

1928-Con.

Apr. 20

21

22

23

24

25

26

27

28

29

30

Discharge

862

836

862

908

858

795

754

746

714

694

706

Month

Water year 1927-28. .......

Maximum

1,180

1,370

3,100

Minimum

308

694

20

Mean

549

976

360

Runoff in 

acre-feet

22,900

35,400

31,600

52,700

58,100

261,000

493801 O - 59 - 38
582 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Measurements of streamflow in the Pacific slope basins in California and Oregon made at 

points other than regular gaging stations are given in the following tables. Most of these 

measurements were made during periods of base flow when streamflow is primarily from 

ground-water storage. Measurements believed to have been made under base-flow conditions 

are Identified by an asterisk (*) to the left of the discharge figure. These measurements 

when correlated with the simultaneous discharge of a nearby stream where continuous records are available will give a picture of the low-flow potentiality of stream. The column 

headed, "Measured previously" shows the water years in which measurements were made at the 

same, or practically the same, site.

Determinations of peak flow at points other than regular gaging stations are given in 

a separate table on page 587.

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In California and Oregon, during the water year 1956

Santa Ana River basin, Calif. 

Absorption studies, lower Santa Ana River, Orange County, Calif.

These measurements were made by the Orange County Flood Control District to determine the rate of 

absorption along the stream bed of the Santa Ana River, covering that portion of the river from Yorba 

Bridge to the Geological Survey gaging station, Santa Ana River at Santa Ana. The measurements are 

listed In downstream order.

Santa Ana River, lat 33°51'30", long 117°47'12", 

2.7 miles southeast of Atwood, Orange

about 1,000 ft upstream from Yorba Bridge and 

County (measured previously 1938-55)

Date

Oct. 1

Dec. 1

23

26

28

30

Jan. 2

4

6

9

11

13

27

30

31

Feb. 2

3

Discharge

0

0

1.36

53.6

77.0

122

125

122

114

112

104

32.2

862

696

633

200

126

Date

Feb. 6

8

10

13

15

17

20

22

24

27

29

Mar. 5

7

9

12

14

16

Discharge

104

83.7

92.1

71.9

50.9

52.4

34.9

35.2

57.1

48.9

35.9

25.1

18.4

24.0

16.6

22.4

21.3

Date

Mar. 19

21

23

26

27

Apr. 12

16

18

20

23

25

27

30

May 4

22

25

28

Discharge

14.4

18.9

6.66

.32

0

0

40.2

22.6

22.2

9.73

7.39

9.64

19.5

0

0

87.8

116

Date

June 1

4

6

8

11

Aug. 29

Sept. 3

5

7

10

17

19

21

24

26

28

Discharge

107

105

110

107

0

O

3.22

12.6

25.7

28.8

54.6

56.3

60.9

68.4

79.9

86.0

Santa Ana River, lat 33°50'55", long 117°5O'05", In SW£- sec. 4, T. 43., R. 9 W., at Jefferson Street 

Bridge, 1 mile north of Olive (measured previously 1958-55)

Oct. 1

Jan. 26

27

30

31

Feb. 2

0

0

542

682

495

102

Feb. 3

6

8

10

13

15

62.6

20.7

8.39

6.76

5.10

0

Feb. 17

20

May 25

28

June 1

4

5.79

0

0

10.1

14.2

12.5

June 6

8

11

Sept. 26

28

19.5

20.1

O

0

3.21

Santa Ana la RlRiver, lat 33°50'08", long 117°51'49", In San Juan Cajon de Santa Ana Grant, at AnahelmOllve bridge, 1.1 miles west of olive, Orange County (measured previously 1938-55)

 I n I . n i 

Oct. 1

Jan. 26

27

0 Jan. 30

0 31

184

560

252

Feb. 2

3

34.3

1.21

Feb. 6

Sept. 30

0

0

Santa Ana River, lat 33°47'17", long 117°52'54", In Santiago de Santa Ana Grant, at Chapman Avenue 

Bridge, 1.7 miles west of Orange, Orange County (measured previously 1938-47, 1950, 1952, 1954)

Oct.

Jan.

1 

27

0 I Jan.

o 1

30 

31

560 

233 I

Feb. 2 

3

15.6 

0

I! Sept 30 O

Santa Ynez River basin, Calif.

Stream

Salslpuedes 

Creek.

Tributary to

Santa Ynez 

River.

Location

Lat 120°25'10", long 34°37'22", In 

Canada de Salslpuedes Grant, at 

Santa Rosa Bridge, 2.4 miles 

southeast of Lompoc, Santa 

Barbara County.

Drainage 

area 

(sq ml)

Measured 

previously 

(water 

years)

Date

Mar. 16 

Mar. 26 

May 7 

June 6

Discharge 

(ofs)

7.35 

6.34 

3.86 

2.89

Santa Maria River basin, Calif.

La Brea Creek Slsquoc River Lat 34°50'45", long 120°10'31", In 

Slsquoc Grant, 1.1 miles above 

gaging station near Slsquoc, 3.8 

miles east of Slsquoc, Santa 

Barbara County.

Oct. 18 .26

Tulare Lake basin, Calif.

Los Gatos 

Creek.

Do........

Tulare Lake . . 

....do.......

On line between SWj and SE£ of 

sec. 5, T. 20 S., R. 14 E., at 

gaging station 1.1 miles above 

Nunez Canyon.

SWiSEj sec. 11, T. 20 S., R. 14 E., 

at angle point In road.

95.5 1949-55 

1954-55

Jan. 4 

Feb. 23 

Mar. 8 

Apr. 5

Jan. 4 

Feb. 23 

Mar. 8 

Apr. 5

5.55 

7.31 

*3.59 

*1.19

5.21 

5.79 

*3.00 

*.12

* Base flow.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 583

Discharge measurements made at points other than gaging stations in the Pacific slope basins 

in California and Oregon, during the water year 1956 Continued

Tulare Lake basin, Calif. Continued

Stream

Los Gatos 

Creek.

Eributary to

Tulare Lake . . .

Location

NEtSEt sec - 13. T. 20 S., R. 14 E., 

at road bridge on Derrick Ave.

Drainage 

area 

(sq mi)

Measured 

previously 

(water 

years)

1954-55

Date

Jan. 4 

Feb. 23 

Mar. 8 

Apr. 5

Discharge 

(cfs)

4.83 

5.49 

*2.42 

*.04

San Joaquln River basin, Calif.

Cantua Creek. 

Do........

Panoche Creek 

Do........

Little 

Panoche 

Creek . 

Los Banos 

Creek.

Do........

San Luls. 

Creek.

Do........

Oarzas Creek.

Orestlmba 

Creek.

Do........

Do........

Del Puerto 

Creek.

Do........

* Base flow 

a Field est

San Joaquln 

River.

....do......

. ...do.......

....do.......

....do.......

....do.......

....do.......

....do.......

....do.......

Lmate.

SE£SE£ sec. 34, T. 17 S., R. 14 

E., at road ford.

NE^NWi sec. 36, T. 17 S., R. 14 

E. , above diversion.

NWiNW-J sec. 31, T. 17 S., R. 15 

E., at Highway 33. 

SW^SWi sec. 16, T. 15 S., R. 12 

E., at former gaging station 

at old diversion dam. 

SEiNEj sec. 16, T. 15 S., R. 12 

E. , at edge of foothills opposite point of bluff, 

NW-JNW-J see. 22, T. 13 S., R. 11 

E., opposite barn at edge of 

foothills. 

NE^SEi sec. 20, T. US., R. 8 

E., 500 ft below confluence of 

North and South Forks.

SE^NEi see. 20, T. }1 S., R. 9 

E., at mouth of gorge.

SE^NEi sec. 15, T. 11 S., R. 9 

E., below Los Banos Creek 

gorge .

SE^SWi sec. 32, T. 10 S., R. 10 

E., at Delta-Mendpta Canal 

crossing.

SEiNEi sec. 15, T. 10 S., R 8 

E. , at former gaging station 

on San Luls Ranch near Los 

Banos.

SE^NW-i sec. 1, T. 10 S., R. 8 E., 

at Delta-Mendota Canal crossing.

SE-JSE-J sec. 31, T. 9 S., R. 9 E., 

at State Highway S3 crossing. 

NW^SE-J sec. 18, T. 8 S., R. 8 E., 

at foothills.

SE-J-NEi sec. 17, T. 8 S., R. 8 E., 

at road ford.

NE-JSEi see. 15, T. 8 S., R. 8 E., 

at road crossing.

SE£SE£ sec. 28, T. 7 S., R. 7 E., 

at point of change to valley 

type terrain.

SW^SW-t sec. 19, T. 7 S., R. 8 E., 

at road ford 1-J miles above 

gaging station.

SW£SW£ sec. 9, T. 7 S., R. 8 E., 

at Delta-Mendota Road siphon.

SWiSWt sec. 2, T. 7 S., R. 8 E., 

at road ford l£ miles southwest of Stomar.

SW£NW£ sec. 21, T. 5 S., R. 7 E., 

at Rock Points at, mouth of 

Puerto Canyon.

NWjNWi sec. 22, T. 5 S., R. 7 E., 

at bridge below Delta-Mendota 

Canal siphon.

299

84.7

1954-55 

1954-55

1949-55 

1954-55 

1954-55 

1954-55

1955

1954-55 

1949-55

1954 

1954

1954-55 

1955

1954-55 

1954-55

Mar. 9 

Apr. 5

Mar. 9 

Apr. 5

Mar. 9 

Mar. 9

Mar. 9

Mar. 9 

Apr. 5

Jan. 3 

Feb. 13 

Mar. 13 

Apr. 4

Mar. 13 

Apr. 4

Jan. 3 

Feb. 13 

Mar. 13 

Apr. 4

Jan. 3

Feb. 13 

Mar. 13

Dec. 30 

Feb. 22 

Mar. 12 

Mar. 28

Dec. 30 

Feb. 22 

Mar. 12 

Mar. 28

Dec. 30

Dec. 29 

Feb. 4 

Mar. 12 

Mar. 28

Dec. 29 

Feb. 4 

Mar. 12

Dec. 29 

Feb. 4

Dec. 27 

Feb. 21 

Mar. 11 

Mar. 27

Dec. 27 

Feb. 21 

Mar. 11 

Mar. 27

Dec. 27 

Feb. 21 

Mar. 11 

Mar. 27

Dec. 27 

Feb. 21 

Mar. 11 

Mar. 27

Dec. 29 

Feb. 3 

Mar. 10 

Mar. 27

Dec. 29 

Mar. 10 

Mar. 27

*1.61 

*.62

*1.22 

*.18

*.91 

*.99

*.76

*.78 

*a.4

96.0 

19.9 

*8.22 

*4.44

*10.4 

*4.44

106 

26.4 

*9.17 

*4.78

102 

20.4 

*3.14

8.60 

4.45 

*2.66 

*2.93

6.16 

3.03 

*1.18 

*1.06

2.51

12.6 

18.8 

*3.59 

*1.69

8.53 

17.4 

*1.91

4.26 

13.3

198 

32.6 

*18.5 

*9.21

194 

32.3 

*15.6 

*6.86

169 

26.2 

*11.4 

*2.98

141 

0 

0 

0

21.7 

25.0 

*7.66 

*4.20

21.4 

*6.29 

*2.92
584 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations in the Pacific slope basins 

in California and Oregon, during the water year 1956 Continued

San Joaquin River basin, Calif Continued

Stream

Del Puerto 

Creek.

Do........

Creek.

Do........

Tributary to

San Joaquin 

River.

....do.......

Location

NWiSW£ sec. 14, T. 5 S., 7 E., 

at road crossing near Halght 

School.

at State Highway 33 road crossIng near Mulberry Road.

north of Black Butte.

south of Tracy at DeltaMendota Canal siphon.

1 mile south Jefferson School.

Drainage 

area 

(sq mi)

Measured 

previously 

(water 

years )

1954-55

Date

Dec. 29 

Feb. 3 

Mar. 10 

Mar. 27

Dec 29

Feb. 3 

Mar. 10

Feb. 2 

Mar. 10 

Mar. 26

Feb. 2 

Mar. 10 

Mar. 27

Feb. 2 

Mar. 10

Discharge 

(cfs)

21.6 

24.1 

*5.48 

*2.44

22.1 

*3.47

14.2

13.9 

*2.14 

*.97

12.5 

*.93 

*.07

10.8

12.5 

*.30

Small basins in California between Sacramento and Eel River basins

North Fork

Gualala

River.

Garcia River.

Elk Creek

Greenwood

Creek.

South Fork

Ten Mile

River.

Middle Fork

Ten Mile

River.

North Fork

Ten Mile

River.

Bear River. . .

Gualala River

Pacific Ocean

....do.......

....do..... ..

....do.......

....do.......

Ten Mile

River.

....do.......

....do.......

Pacific Ocean

Lat 38°47'55", long 123°29'25",

1.25 miles above Little North

Fork Gualala River and 2.3

miles northeast of Gualala.

Lat 38°55'40", long 123°37'50",

at ford 0.6 mile below North

Fork Garcia River and 3.5

miles northeast of Point

Arena.

Lat 38"59'45", long 123°40'50",

at ford 1.3 miles above mouth

and 1.9 miles north of Manchester.

Lat 39°06'15", long 123°41'45",

1.0 mile above mouth and 2.2

miles southeast of Elk.

Lat 39°08'05", long 123°42'05" J

0.8 mile east of Elk and 1.3

miles above mouth.

Lat 39°18'50"., long 123°42'15",

150 ft above Little North Fork

Big River and 5.0 miles east

of Mendoclno.

SEi sec. 14, T. 19 N., R. 17

W., 0.5 mile above Campbell

Creek and 6.7 miles northeast

of Fort Bragg.

NWj sec. 25, T. 24 N. , R. 17

W. , 200 ft above confluence

with North Fork Ten Mile River

and 10.5 miles northeast of

Fort Bragg.

NWj- sec. 25, T. 20 N., R. 17

W., 0.2 mile above confluence

with Middle Fork Ten Mile

River and 10.5 miles northeast of Fort Bragg.

SEi sec. 13 T. IN., R. 3 W. ,

0.8 mile southeast of Capetown and 3.0 miles above

mouth.

39.2

98.2

26.6

24.8

24.2

152

26.5

33.3

39.1

78.3

1951-55

1951-55

1951-55

1951-55

1951-55

1951-55

1951-55

1951-55

1951-55

1951-55

Oct. 3

Oct. 17

Oct. 3

Oct. 17

Oct. 3

Oct. 18

Oct. 4

Oct. 18

Oct. 4

Oct. 18

Oct. 4

Oct. 18

Dec. 19

Dec. 19

Dec. 19

Dec. 20

Oct. 4

Oct. 19

Oct. 4

Oct. 19

Oct. 4

Oct. 19

Oct. 11

Oct. 27

*3.60

*4.52

*12.0

*13.7

*2.31

*2.66

*2.38

*2.87

*.94

*1.45

*5.16

*7.32

2,730

3,200

4,600

3,450

*.72

*1.30

*3.20

*4.20

*3.76

*4.75

*29.9

*16.3

Eel River basin, Calif.

Black Butte

River.

South Fork

Duzen River

Middle Fork

Eel River.

Van Duzen

River.

SEi sec. 28, T. 23 N. , R. 11

W., 0.5 mile above mouth and

9.1 miles east of Covelo.

NE£ sec. 30, T. IN., R. 5 E.,

0.3 mile above Butte Creek

and 8 miles east of Bridgeville.

161

36.2

1951-55

1951-55

Nov. 3

June 7

July 17

Aug. 16

Oct. 11

Oct. 27

Nov. 20

May 9

May 26

June 13

June 29

July 25

Aug. 18

Sept. 14

*4.23

*155

*26.4

*9 .23

*6.92

*7.73

1,610

*134

*63.9

*27.0

*16.5

*7.44

*4.45

*4.21

Jacoby Creek basin, Calif.

Jacoby Creek. Pacific Ocean NEj sec. 14, T. 5 N., R. 1 E., 

2.6 miles southeast of Bayside and 3.8 miles above 

mouth.

10.1 1951-55 Oct. 25 *4.29

* Base flow.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 585

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In California and Oregon, during the water year 1956 Continued

Klamath River basin

Stream

Big Spring

Creek.

Wllliamson

River.

Spring Creek.

Larkln

(Shakespeare)

Creek.

Plvemlle

Creek.

Sycan River. .

Kara Kaun

(McCready)

Spring.

Anna Creek. . .

Wood River. . .

Wood River

Springs

Port Creek. . .

Crooked Creek

Sevenmlle

Creek.

Lost River. . .

Buck Creek. . .

Lost River. . .

Spencer Creek

Beaver Creek.

Tributary to

Wllliamson

River In

Klamath

Marsh.

Upper Klamath

Lake.

Wllliamson

River.

....do.......

North Pork

Sprague

River.

Sprague River

....do.......

Wood River. . .

Upper

Klamath

Lake.

Wood River.. .

....do.......

....do.......

Upper

Klamath

Lake.

Klamath River

via Lost

River diversion

canal.

Lost River.. .

Klamath River

via Lost

River diversion

canal.

Klamath River

....do.......

Location

Sec. 22, T. 30 S., R. 8 E.,

below tributary on Lenz Ranch,

Oreg.

At former gaging station above

Spring Creek, 6 miles north

of Chlloquln, Oreg.

At mouth, In sec. 9, T. 34 S.,

R. 7 E., 4 miles north of

Chlloquln, Oreg.

Sec. 14, T. 34 S., R. 7 E.,

4 miles north of Chlloquln,

Oreg.

At former gaging station near

Beatty, Oreg.

At former gaging station near

Beatty, Oreg.

Sec. 25, T. 34, S., R. 8 E.,

8 miles east of Chlloquln,

Oreg.

At former gaging station, 5.5

miles northwest of Fort

Klamath, Oreg.

At former gaging station at

Port Klamath, Oreg.

Sec. 3, T. 33 S., R. 7i E.,

2 miles north of Port

Klamath, Oreg.

Sec. 26, T. 33 S., R. 7i E.,

at highway crossing below

diversion (but Includes diversion of 0.78 cfs), 2 miles

southeast of Port Klamath,

Oreg.

Sec. 1, T. 34 S., R. 7£ E.,

100 ft above highway bridge,

2 miles northwest of Klamath

Agency, Oreg.

Ntfi-SWi- sec. 36, T. 33 S., R.

6 E., 4^ miles southwest of

Port Klamath, Oreg.

Sec. 13, T. 39 S., R. 11 E.,

300 ft below Big Springs

pump, 2i miles southeast of

Bonanza, Oreg,

NE£ sec. 18, T. 39 S., R. 11 E.,

0.5 mile above mouth, 3 miles

southwest of Bonanza, Oreg.

SE£ sec. 19, T. 39 S., R. 11 E.,

250 ft below Harpold Dam,

1 1/6 miles below Buck Creek

and 4 miles southwest of

Bonanza, Oreg.

At former gaging station 5 miles

northwest of Keno, Oreg.

Wi sec. 30, T. 47 N. , R. 8 W.,

2.0 miles above mouth and 15

miles northwest of Yreka,

Calif.

Drainage 

area 

(sq ml)

b80

1,290

21.0

_

b40

-

(c)

b40

b90

(o)

(o)

(o)

b50

_

b75

bl,380

b90

103

Measured 

previously 

(water 

years)

1915-23,

1925-27,

1949-54

1942,

1949-54

1905,

1914-17,,

1919-20,

1922-29,

1931,1934,

1949-54

1924-25,

1950-53

1922-23,

1925-26,

1949-54

1926,

1949-54

1949,

1951-54

1931,

1949-53,

1955

1904-10,

1949-55

1906-11,

1915-18,

1920-21,

1923-25,

1931,

1949-53,

1955

1905-9,

1923-25,

1949-50,

1952-53,

1955

1905-7,

1909-14,

1916,

1923-27,

1931,

1949-53,

1955

1951

1951-52,

1954-55

1927,

1929-32,

1934,

1949-53,

1955

1953-55

Date

Oct. 5

Oct. 6

Oct. 4

Oct. 4

Oct. 3

Oct. 3

Oct. 4

Oct. 6

Oct. 5

Nov. 4

Dec. 21

Jan. 23

July 16

Aug. 27

Oct. 6

Oct. 5

Oct. 5

Oct. 6

Nov. 11

Nov. 7

Nov. 7

Oct. 5

Sept. 22

Oct. 4

Oct. 17

May , 10

May '25

June 7

June 21

July 21

Aug. 30

Discharge 

(cfs)

*58.9

*26.4

*310

*11.8

*19.3

10.2

*58.0

*47.0

*259

*256

*361

*360

312

304

*226

*82.7

*90.5

77.4

*21.7

*.82

*10.4

*10.6

*36.6

*17.2

*18.2

505

786

*385

*287

*105

53.5

* Base flow.

b Approximately.

c Spring fed.
586 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations In the Pacific slope basins 

In California and Oregon, during the water year 1956 Continued

Klamath River basin Continued

Stream

Indian Creek.

Elk Creek....

South Pork

Salmon

River.

North Pork

Salmon

River.

Bluff Creek..

South Pork

Trinity

River.

Do ........

Hayfork Creek

Tributary to

Klamath River

....do.......

Salmon River.

....do.......

Klamath River

Trinity River

....do.... ...

South Pork

Trinity

River.

Location

SE£ see. 16, T. 17 N. , R. 7 E.,

100 ft below Luther Gulch, 4.8

miles north of Happy Camp,

Calif., and 5.7 miles above

mouth.

Wj see. 25, T. 16 N., R. 7 E. ,

3.2 miles above mouth and 3.2

miles southeast of Happy Camp,

Calif.

NE£ sec. 31, T. 39 N. , R. 12 W.,

100 ft below Methodist Creek

and 4.5 miles southeast of

Porks of Salmon, Calif.

SE£ see. 29, T. 40 N. , R. 11 W. ,

Just below Jessops Gulch In

Sawyers Bar, Calif.

NW£ sec. 30, T. 10 N. , R. 5 E. ,

0.8 mile above mouth, 4 miles

northeast of Weltehpee, Calif.

SE£ see. 13, T. 1 S., R. 7 E.,

at highway bridge at Forest

Glen, 1.0 mile below Rattlesnake Creek, Calif.

N£ see. 36, T. 3 N. , R. 6 E. ,

1.0 mile above Hayfork Creek

and 1.2 miles south of Hyampom, Calif.

SEj- see. 22, T. 31 N. , R. 11 W. ,

3.7 miles above Carr Creek and

5.7 miles southeast of Hayfork,

Calif.

Drainage 

area 

(sq ml)

118

91.1

251

98.6

74.6

208

342

87.2

Measured 

previously 

(water 

years)

1953-55

1953-55

1953-55

1954-55

1932-35,

1937-39,

1942-45,

1947-48,

1951-55

1953-55

1951-55

1953-55

Date

Oct. 5

Oct. 18

June 8

June 20

July 21

Aug. 30

Oct. 5

Oct. 18

Jan. 22

May 9

May 25

June 8

June 20

July 21

Aug. 29

Oct. 10

Oct. 25

May 1

May 24

June 12

June 30

July 24

Aug. 23

Oct. 10

Oct. 25

May 24

June 12

June 30

July 24

Aug. 24

Oct. 11

Oct. 24

May 25

June 13

July 23

Aug. 23

Oct. 7

Oct. 18

Dee. 20

Apr. 16

May 7

May 23

June 21

July 25

Sept. 18

Oct. 6

Oct. 17

July 26

Oct. 6

Oct. 17

May 8

May 23

June 5

June 21

July 26

Discharge 

(efs)

*42.5

*44.2

524

*336

*126

*61.8

*25.4

*30.8

1,310

466

605

*374

*310

*103

*45.5

*55.5

*29.2

913

1,400

781

*556'

*240

*69.5

109

17.6

1,510

670

*353

*90.4

*34.3

*81.4

*41.6

*261

*138

*69.2

*51.0

*17.5

*18.1

4,590

609

757

*449

*146

*50.3

*23.2

*31.9

*31.9

*84.1

*3.96

*4.45

402

*106

*61.7

*39.3

*11.9

Smith River basin, Calif.

Middle Pork

Smith River

North Pork

Smith River

Smith River..

....do.......

NE£ see. 28, T. 17 N., R. 2 E.,

0.9 mile southeast of Gasquet

and 1.0 mile above mouth.

NE£ sec. 20, T. 17 N., R. 2 E. ,

0.7 mile above mouth and 0.7

mile north of Gasquet.

130

158

1952-55

1952-55

Oct. 4

Oct. 25

Dee. 22

Jan. 31

May 7

May 21

June 15

June 27

July 21

Aug. 25

Oct. 4

Oct. 25

May 7

May 21

June 15

June 27

July 21

Aug. 25

*57.9

*53.0

17,000

1,220

585

*446

*224

*151

*82.6

*62.5

*80.2

*107

533

*294

*165

*127

*81.0

*60.2

* Base flow.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 587

The following table contains determinations of peak discharge made at crest stage by 

indirect methods or by current meter or computed from rating curve at points other than 

regular gaging stations.

Determinations of peak discharge during water year October 1955 to September 1956

Stream

Carmel River.

San Lorenzo

Creek.

San Benito

River.

Corralitos

Creek

Scott Creek..

Purisima

Creek.

San Antonio

Creek.

Arroyo Mo oho.

Arroyo Valle.

Arroyo de la

Laguna

Dry Creek

(Lime Kiln

Creek) .

Sand Creek. . .

North Fork

Kings River

Warthan Creek

Panoche Creek

Los Banos

Creek.

San Luis

Creek.

North Fork

Tuolumne

River.

Stanislaus

River.

North Fork

Cosumnes

River.

iJeer Creek. . .

Carson Creek.

Tributary to

Pacific Ocean

Ballnas River

Pajaro River

....do.......

*

Pacific Ocean

....do.......

Alameda Creek

....do. ......

....do.......

....do.......

Kaweah River.

Tulare Lake

basin.

Kings River..

Los Qatos

Creek.

San Joaquin

River.

. ...do.......

....do.......

Tuolumne

River.

San Joaquin

River.

....do.......

Cosumnes

River.

.do .......

Deer Creek. . .

Location

Lat 36°28'15", long 121°43'OO", In

Los Tularcitos Grant, 1,OOO ft

below Klondike Canyon and 13

miles southeast of Carmel, Calif,

At former gaging station, 0.2

mile south of King City,

Monterey County, Calif.

At former gaging station, 0.5

mile above Gomez Creek and

6 miles west of Herandez,

Calif. 

Lat 36°56'20", long 121°46'10",

in Corralitos Grant, 1.1 miles

below unnamed tributary and

2 miles north of Watsonville,

Santa Cruz County, Calif.

Lat 37 0 04'10", long 122°13'50",

in Rancho Aqua Puerca Y las

Trancas Grant, ^ mile above

Big Creek and 3.5 miles northwest of Davenport, Santa Cruz

County, Calif.

SE£ sec. 10, R. 5 W., T. 6 S.,

3.0 miles above mouth and 4.O

miles south of Half Moon Bay,

Calif.

At former gaging station near

Sunol, Calif., 1.5 miles

above mouth.

At former gaging station near

Livermore, Calif., 4 miles

above mouth.

600 ft below former gaging station and 4.5 miles south of

Livermore, Alameda County,

Calif. . .

At former gaging station, 3f

miles south of Pleasanton,

Alameda County, Calif.

E| sec. 15, T. 17 S., R. 27 E.,

3.1 miles upstream from mouth

and 4.6 miles north of Lemoncove, Calif.

NWj sec. 15, T. 15 S., R. 25 E. ,

O.6 mile upstream from discontinued gaging, station and

3.8 miles east of Orange Cove,

Calif.

At former gaging station, 1 mile

below Rancheria Creek, Calif.

SEj sec. 7, T. 21 S., R. 15 E.,

2.2 miles southwest of Coalinga, Calif.

SWi sec. 16, T. 15 S., R. 12 E.,

1.1 miles downstream from

Silver Creek, 9 miles east of

Panoche, and 18 miles southwest of Mendota, Calif.

SEj sec. 11, T. 11 S., R. 9 E.,

3.8 miles upstream from Bureau of Reclamation gaging

station and 5 miles southwest

of Los Banos. Calif.

Lat 37 "03 '55", long 121°04'15",

in San Luis Gonzaga Grant, 3OO

ft downstream from Cottonwood

Creek and 11.5 miles west of

Los Banos, Calif.

SW£ sec. 22, T. 3 N. , R. 17 E. ,

2 miles east of Long Barn,

Calif.

SEi sec. 10, T. IS., R. 12 E. ,

at Goodwin Dam, 3.8 miles

northeast of Knights Ferry,

Calif.

NE£NE£ sec. 13, T. IN., R. 9 E.,

4 miles east of Farmlngton,

Calif.

SW-£ sec. 34, T. 10 N. , R. 13 E.,

4.3 miles upstream from Steely

Fork and 15 miles southeast of

Placerville, Calif.

Near center of sec. 16, T. 8 N.,

R. 8 E., J mile upstream from

Little Deer Creek and 6 miles

northeast of Sloughhouse, Califi

SWiNWt sec. 8, T. 8 N., R. 8 E.,

0.8 mile upstream from Coyote

Creek and 5.5 miles northeast

of Sloughhouse, Calif.

Drainage 

area 

(sq ml)

188

262

108

27.1

13.6

6.11

58.4

36.7

149

406

75.5

32

225

112

299

156

84.7

21.6

973

8.25

36.9

46.4

23.7

Measured 

previously 

(water 

years)

1942-45

1949-53

1912-28

1912-28

1912-28

1912-28

1944-54

1926-50

1915-32

Date

Dec. 23

Dec. 23

Dec. 24

Dec. 22

Dec. 23

Dec. 22

Dec. 23

Dec 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 22

Dec. 23

Dec. 23

Dec. 23

Discharge 

(cfs)

6,930

3,100

3,140

3,620

6,430

683

5,810

1,880

18,200

24,800

6,070

749

24,600

783

1,890

11,400

2,640

2,590

62,900

940

6,160

4,460

2,480
588 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Determinations of peak discharge during water year October 1955 to September 1956 Continued

Stream

Kellogg Creek

Little Cow

Creek.

North Fork

Cottonwood

Creek.

Dry Creek. . . .

Red Bank

Creek.

Little

Antelope

Creek.

Pine Creek. . .

Mud Creek. . . .

Llndo Channel

Little Chlco.

Creek.

Stony Creek. .

Dry Creek. . . .

Conoow Creek.

North Yuba

River.

Rook Creek. . .

Woodruff

Creek.

South Yuba

River.

Dry Creek. . . .

Yankee Slough

Plum Creek. . .

Elder Creek. .

Middle Creek.

Clover Creek.

Sootts Creek.

Do...... ..

Tributary to

San Joaquln

River.

Cow Creek. . . .

Cottonwood

Creek.

South Fork

Cottonwood

Creek.

Sacramento

River.

....do.......

Antelope

Creek.

Sacramento

River.

Big Chlco

Creek.

....do.......

Sacramento

River.

Butte Creek. .

West Branch

Feather

River.

Yuba River. . .

North Yuba

River.

....do.......

Yuba River. . .

Bear- River. ..

....do.......

South Fork

American

River.

Morris on

Creek.

Clear Lake. . .

Middle Creek.

Clear Lake...

....do.......

Location

SEiSEi sec. 12, T. 1 S. , R. 2 E. , ,

0.9 mile below unnamed tributary and 3.2 miles west of

Byron, Calif.

NEi sec. 5, T. 31 N., R. 3 W.,

0.6 mile downstream from French

Creek and 0.8 mile northeast of

Palo Cedro, Calif.

Kj sec. 17, T. 30 N., R. 6 W.,

300 ft upstream from Hullng

Creek and 3.4 miles southeast

of Ono, Calif.

SEi sec. 16, T. 28 N., R. 6 W.,

0.8 mile upstream from Spring

Gulch and 1 mile downstream

from Salt Creek, Calif.

SEi sec. 15, T. 26 N., R. 6 W.,

200 ft upstream from Last

Chance Creek and 10 miles north

of Paskenta, Calif.

Lat 40°12'45", long 122°07'40", In

El Primer Canon Grant, 6 miles

northeast of Red Bluff, Calif.

Lat 40°10'45", long 122°05'42",

In El Primer Canon Qrant, 300

ft downstream from Dehaven

Qulch and 6.2 miles east of Red

Bluff, Calif.

NEi sec. 33, T. 24 N., R. 1 E.,

11 miles north of Chlco, Calif.

SEiSEi sec. 23, T. 23 N., R. IE.,

2.8 miles southwest of Richardson Springs, Calif., and 7.9

miles north of Chlco Post Office

Lat 39°45'10", long 121°49'35", In

Arroyo Chlco Qrant, at Longfellow Avenue bridge, 1.8 miles

north of Chloo, Calif.

Ei sec. 29, T. 22 N., R. 2 E. ,

0.8 mile upstream from bridge

on Bruce Road and 3.5 miles

east of Chlco Post Office, Calif.

SEi sec. 35, T. 18 N. , R. 7 W.,

at East Park feed-canal diversion dam, 3 miles west of Stonyford, Calif.

NWi sec. 36, T. 21 N., R. 3 E.,

1.3 miles upstream from Horse

Thief Canyon and 8.9 miles north

of Oroville, Calif.

NEi sec. 16, T. 22 N., R. 4 E.,

at Lake Wllenor Dam, 4 miles

north of Yankee Hill Post Office.

NWi sec. 32, T. 20 N., R. 12 E.,

1.5 miles west of Sierra City,

Calif.

NWi sec. 8, T. 19 N. , R. 10 E.,

600 ft upstream from Woodruff

Creek and 0.3 mile south of

Qoodyears Bar, Calif.

NWj sec. 8, T. 19 N. , R. 10 E. ,

0.2 mile above mouth and 0.4

mile south of Qoodyears Bar,

Calif.

SEi sec. 5, T. 17 N. , R. 11 E. ,

0.2 mile downstream from Canyon

Creek and 2.3 miles east of

Washington, Calif.

W-i sec. 32, T. 15 N. , R. 6 E. ,

In Camp Beale Military Reservation, 8 miles northeast of

Wheatland, Calif.

On line between sees. 13 and 14,

T. 13 N. , R. 4 E., at Pleasant

Grove Road crossing, 3 miles

east of Rio Oso, Calif.

NEiSEi sec. 32, T. 11 N. , R. 14

E. , ij miles upstream from

mouth and 2 miles southeast of

Rlverton, Calif.

SEj sec. 2, T. 7 N., R. 5 E., at

Franslnettl Road crossing,

1 mile south of Florin, Calif.

SEi sec. 25, T. 16 N. , R. 10 W. ,

at bridge 3 miles north of

Upper Lake, Calif.

SEi sec. 5, T. 15 N., R. 9 W.,

at bridge 1.7 miles northeast

of Upper Lake, Calif.

NWiSEi sec. 14, T. 14 N. , R. 10

W., at bridge 2 miles northwest

of Lakeport, Calif.

Lat 39 0 09'05", long 122°59'45",

In NWi sec. 17, T. 15 N. , R.

10 W. , about 5 miles above

mouth and 5.1 miles west of

Upper Lake, Calif.

drainage 

area 

[sq ml)

24.1

145

36.8

130

40.4

30.6

38.2

20.9

22.4

-

25.4

97

17.7

14.7

91.8

4.83

4.12

198

55.9

6.8

15.8

46

14

54

75.4

Measured 

previously 

(water 

years)

1914,

1918-34

1923-44

1910-33

1942-53

1922-39

Date

Dec. 23

Jan. 15

Dec. 21

Jan. 15

Jan. 15

Dec. 19

Dec. 19

Jan. 15

Jan. 15

Dec. 22

Dec. 22

Dec. 22

Dec. 22

or 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Dec. 23

Jan. 26

Dec. 23

Dec. 22

Dec. 21

Dec. 21

Dec. 22

Dec. 22

Discharge

(Of 8)

1,310

13,700

12,100

8,180

2,990

3,160

3,410

2,130

1,890

6,220

1,680

13,000

2,120

2,300

11,400

1,570

786

26,300

13,900

2,200

2,200

1,400

806

5,600

2,280

7,660

7,540
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS 589

Determinations of peak discharge during water year October 1955 to September 1956 Continued

Stream

Ulatls Creek.

Unnamed

tributary.

North Pork

Walker

Creek.

Feliz Creek. .

Big Sulphur

Creek.

Frans Creek. .

Mark West

Creek.

Santa Rosa

Creek.

Garoia River.

Pudding Creek

Outlet Creek.

Black Butte

River.

Short Creek. .

Mill Creek...

Tenmlle Creek

South Pork

Van Duzen

River.

North Pork

Mad River.

Little Shasta

River.

Shasta River.

Beaver Creek,

East Pork

Scott River

South Pork

Scott River

Tributary to

Sacramento

River.

Coyote Creek.

Walker Creek.

Russian River

....do.......

....do.......

....do.......

....do.......

Laguna de

Santa Rosa.

Pacific Ocean

....do.......

....do.......

....do._. .....

Eel River. . . .

Middle Pork

Eel River.

Mill Creek...

Middle Pork

Eel River.

South Pork

Eel River.

Van Duzen

River.

Mad River....

Shasta River.

Klamath River

....do.......

Scott River..

....do.......

Location

Lat 38 e24'35", long 122°02'35",

In Los Putos Grant, 5 miles

northwest of Vacavllle, Solano

County, Calif.

Lat 37°52'10", long 122°31'29", , 0.6 mile above mouth and 2.7

miles south of Mill Valley,

Calif.

NEi sec. 9, T. 4 N., R. 9 W. ,

1 mile above mouth and 4 miles

southeast of Tomales, Calif.

Lat 38°58'20"-, long 123°08'30",

in Rancho de Sanel Grant, 0.2

mile above Johnson Creek and

1.4 miles west of Hopland,

Mendoclno County, Calif.

NE£ sec. 9, T. 11 N., R. 10 W.,

-E.I miles northeast of Cloverdale, Calif., and 2.2 miles

above mouth.

SW£ sec. 24, T. 9 N. , R. 8 W.,

0.2 mile below right bank

tributary and 2 miles southwest of Kellogg, Calif.

At former gaging station, 0.5

mile above mouth and 10 miles

northwest of Healdsburg, Calif.

At former gaging station, 5 miles

above Laguna de Santa Rosa,

Calif.

At former gaging station at Santa

Rosa, Calif.

Lat 38°55'40", long 123°37'50",

at ford, 0.6 mile below North

Pork Garcia River and 3.5 miles

northeast of Point Arena,

Calif.

Lat 38°59'45", long 123°40'50",

at ford, 1.3 miles above mouth

and 1.9 miles north of Manchester, Calif.

Lat 39°18'50", long 123°42'15",

150 ft above Little Pork Big

River and 5.0 miles east of

Mendocino, Calif.

NEi sec. 3, T. 18 N., R. 11 W. ,

£ mile below Little Valley

Creek and 4.8 miles east of

Fort Bragg, Calif.

NEi sec. 33, T. 20 N. , R. 14 W. ,

0.2 mile above Long Valley

Creek and 0.5 mile south of

Longvale, Calif.

SE£ sec. 28 T. 23 N. , R. 11 W. ,

0.5 mile above mouth and 9.1

miles east of Covelo, Calif.

NW£ sec. 27, T. 23 N. , R. 12 W.,

3.5 miles above mouth and 4.4

miles northeast of Covelo,

Calif.

Lat 39°44'45", long 123°10'15",

in SWj sec. 23, T. 22 N., R.

12 W., 1.5 miles above mouth

and 5.2 miles southeast of

Covelo, Calif.

NWj sec. 16, T. 22 N. , R. 15 W. ,

0.15 mile above Spring Creek

and 6.3 miles northwest of

Laytonville, Calif.

HEi sec. 30, T. 1 N., R. 5 E.,

0.3 mile above Butte Creek and

8 miles east of Brldgevllle,

Calif.

SWi sec. 28, T. 6 N., R. 2 E.,

0.2 mile below Sullivan Gulch

and 0.3 mile south of Korbel,

Calif.

SE-J- sec. 17, T. 45 N., R. 4 W. ,

1.2 miles below Dewey Gulch

and 3.7 miles northeast of

Little Shasta, Calif.

At former gaging station, J mile

below Little Shasta River.

Wi sec. 30, T. 47 N., R. 8 W. ,

2.0 miles above mouth and 15

miles northwest of Yreka,

Calif.

SWi sec. 16, T. 40 N., R. 8 W. ,

at Oallahan ranger station,

Calif., Just above mouth.

SEj sec. 20, T. 40 N. , R. 8 W. ,

1 mile southwest of Callahan,

Calif., and 1.3 miles above

mouth.

Drainage 

area 

(sq mi)

4.29

.57

19.9

31.2

81.7

14.4

131

49

53

98.2

26.6

152

11.8

101

161

15.4

97.1

50.3

36.2

46.9

54.9

670

103

57.6

42

Measured 

previously 

(water 

years)

1939-42

1940-41

1939-41

1951-55

1951-55

1951-55

1951-55

1952-54

1951-55

1911-13,

1917-22,

1923-33

1953-55

Date

Dec. 22

Jan. 14

Dec. 22

Dec. 21

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 23

Dec. 23

Dec. 21

Dec. 21

Dec. 21

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Discharge 

(cfs)

972

159

2,720

2,710

20,000

4,130

28,900

11,000

7,940

26,300

5,03O

31,300

1,940

23,100

25,000

3,780

11,100

16,300

8,990

11,600

1,430

4,870

4,120

6,600

3,320
590 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Determinations of peak discharge during water year October 1955 to September 1956 Continued

Stream

Indian Creek.

Elk Creek. . . .

South Pork

Salmon

River.

North Pork

Salmon

River.

Bluff Creek..

Trinity River

North Pork

Trinity

River.

South Pork

Trinity

River.

Do........

Hayfork Creek

©

Middle Pork

Smith River

North Pork

Smith River

Tributary to

Klamath River

....do.......

Salmon River.

....do.......

Klamath River

....do.......

Trinity River

....do.......

....do.......

South Pork

Trinity

River.

Smith River..

....do.......

....do.......

Location

SE-J sec. 16, T. 17 N., R. 7 E.,

100 ft below Luther Gulch,

4.8 miles north of Happy Camp,

Calif., and 5.7 miles above

mouth.

Wj sec. 25, T. 16 N., R. 7 E.,

3.2 miles above mouth and 3.2

miles southeast of Happy Camp,

Calif.

NEj- sec. 31, T. 39 N., R. 12 W. ,

100 ft below Methodist Creek

and 4.5 miles southeast' of

Porks of Salmon, Calif.

SEj- sec. 29, T. 40 N., R. 11 W.,

Just below Jessops Gulch In

Sawyers Bar, Calif.

NWi sec. 30, T. 10 N. , R. 5 E.,

0.8 mile above mouth and

4 miles northeast of Weltohpec,

Calif.

At former gaging station, 2 miles

upstream from highway bridge at 

Cedar Plat, Calif., and 7 miles

upstream from Burnt Ranch Post

Office.

SEJ sec. 20, T. 34 N., R. 11 W. ,

500 ft above East Pork and 0.8

mile north of Helena, Calif.

SEj- sec. 13, T. IS., R. 7 E.,

at highway bridge at Forest

Glen, Calif., 1.0 mile below

Rattlesnake Creek.

N| Sec. 36, T. 3 N., R. 6 E.,

1.0 mile above Hayfork Creek

and 1.2 miles south of Hyampom,

Calif.

SEjf sec. 22, T. 31 N., R. 11 W.,

3.7 miles above Carr Creek and

5.7 miles southeast of Hayfork,

Calif.

NEj- see. 28, T. 17 N., R, 2 E.,

0.9 mile southeast of Gasquet,

C.allf. , and 1.0 mile above mouth.

NE£ sec. 20, T. 17 N., R. 2 Ei,

0.7 mile above mouth and 0.7

mile north of Gasquet, Calif.

Lat 41°55'18", long 124°08'45",

in NWiSVli sec. 26, T. 18 N.,

R. 1 W., 0.5 mile south of

town of Smith River, Calif. ,

and 1.3 miles above mouth.

Drainage 

area 

(sq ml)

118

91.1

251

98.6

74.6

1,429

105

208

342

87.2

. 130

158

34

Measured 

previously 

( water 

years)

1953-55

1953-55

1953-55

1954-55

1932-35,

1937-39,

1942-45,

1947-48,

1951-55 

1931-40

1953-55

1951-55

1953-55

1952-55

1952-55

Date

Dec. 21

Dec. 21

Dec. 22

Dec. 22

Dec. 21

Dec. 22

Dec. 21

Dec. 22

Dec. 21

Dec. 22

Dec. 22

Dec. 22

Dec. 22

Discharge 

(cfs)

23,000

14,400

24,000

19,200

20,200

172,000

21,600

42,400

39,400

3,880

26,000

50,600

4,760
INDEX

 Page 

"A" Canal at Klamath Palls, Oreg...... 558

Accuracy of field data and computed

results......................... 7

Acre-foot, definition of.............. 2

Adobe Creek near Kelseyville, Calif..183-184 

Agencies other than Geological Survey,

records collected by............ 11-14

Alameda Creek near Niles, Calif....... 217

Alameda storm drain near Orange,

Calif........................... 11

Alamitos Creek near Edenvale, Calif... 210 

Alamo Creek near Santa Maria, Calif... 173 

Alder Creek near White Hall, Calif...470-471 

Alderpoint, Calif., Eel River at...... 536

Alhambra Wash at Wilmar, Calif.......

Aliso Creek at El Toro, Calif........

Aliso Wash near Northridge, Calif....

Almanor-Butt Creek tunnel, diversion

by.............................

Alpine, Calif., Sweetwater River near 

American River, at Pair Oaks, Calif., 

at Sacramento, Calif...............

Middle Pork, at French Meadows,

Calif..........................

near Auburn, Calif...............

North Pork at North Pork Dam, Calif 

South Pork, near Camino, Calif

Barrett Reservoir, Calif., monthly

Bass Lake, Calif., North Pork Willow 

Creek near.....................

Pacific Gas & Electric Co. conduit 

No. 3 near.

11

45

11

423

24

480

481

457 

462 

456 

476 

near Kyburz, Calif...............468-469

near Lotus, Calif................. 477

American River flume near Camino,

Calif........................... 475

Angel Creek near McCloud, Calif....... 386

Annapolis, Calif., South Fork Gualala

River near..............:....... 522

Antelope Creek (Lower Klamath Lake

basin) near Tennant, Calif...... 551

Antelope Creek (Sacramento River

basin), near Red Bluff, Calif... 399 

seepage investigation of............ 500

Arcadia Wash near Arcadia, Calif...

Batavia storm drain near Orange, Calif.

Battle Creek near Cottonwood, Calif....

Bautista Creek near Hemet, Calif.......

Bear Creek (tributary to San Joaquin

River) near Lockeford, Calif.....

Bear Creek (tributary to South Pork 

San Joaquin River) near Lake 

Thomas A. Edison, Calif.

Bear Reservoir near Planada, Calif...., 

Bear River (tributary to Feather

River) near Auburn, Calif........ 450

near Wheatland.Calif................ 451

Bear River (tributary to North Fork

Mokelumne River) near Salt

Springs Dam, Calif............... 354

Beatty, Oreg., Sprague River near...... 554

Beaumont, Calif., Little San Gorgonio

Creek near

Beryl Avenue storm drain near Alta

Bidwell Bar, Calif., Feather River at., 

Bieber, Calif., Pit River near.........

Big Bar, Calif., North Fork Feather

Arcata, Calif., Mad River near. 

Arlington, Calif., Santa Ana River

near............................

Arnold Meadow, Calif., Chiquito Creek

near............................

Arrowhead Springs, Calif., East Twin

Creek near......................

Waterman Canyon Creek near..........

Arroyo de la Cruz near San Simeon,

Calif...........................

Arroyo Grande at Arroyo Grande, Calif. 

Arroyo Nicasio near Point Reyes

Station, Calif......:...........

Arroyo Seco (Los Angeles River basin)

546

69

266

58

180

179

513

near Pasadena, Calif.........11,15,110

Arroyo Seco (Salihas River basin)

near Soledad, Calif.............

Arroyo Simi, near Moorpark, Calif.....

near Simi, Calif....................

Artesia, Calif., Coyote Creek near....

Ashland, Oreg., Keene Creek near......

Atascadero Creek near Goleta, Calif... 

Auberry, Calif., San Joaquin River

near............................

Willow Creek at mouth near..........

Auburn, Calif., Bear River near.......

Middle Fork American River near. 

Avery, Calif., Middle Pork Stanislaus 

River near......................

North Fork Stanislaus River near.... 

Azusa, Calif., Rogers Creek near......

San Gabriel River near..............

Azusa conduit diversion, Calif........

193

11

11

102

565

144

274

277

450

462

324

327

90

89

11

Bagby, Calif., Merced River at.......296-297

Baldwin Park, Calif., San Gabriel

River near...................... 91

Ballona Creek, at Los Angeles, Calif... 11 

near Culver City, Calif............. 122

near Playa del Rey, Calif........... 11

Bangor, Calif., South Honcut Creek

near............................ 434

contents of.

Page

17

276

275

11

396

77

348

261

11

Loma, Calif.,

River at.

56

11

421

379

431

47

382

Big Bear Lake near Big Bear Lake,

Calif.........................

Big Bend, Calif., Pit River at......

Big Chico Creek, Lindo Channel of,

seepage investigation of......... 504

near Chico, Calif.................... 405

seepage investigation of............. 504

Big Creek, Calif., Florence Lake near.. 258 

Huntihgton Lake near................. 269

Lake Thomas A. Edison near..........262-263

San Joaquin River above.............. 267

Shaver Lake near..................... 273

Big Creek (San Joaquin River basin)

below Huntington Lake, Calif.....

Big Creek (Tulare Lake basin) above 

Pine Plat Reservoir, Calif.

Big Dalton Creek.near Glendora, Calif.,

59 Big Dry Creek Reservoir, Big Dry 

Outlet, near Clovis, Calif.

Little Dry Outlet, near Clovis,

Calif............................

Big Grizzly Creek near Portola, Calif.. 

Big Sand Creek at Patton, Calif........

Big Sur, Calif., Sur River at.......... 181

Big Trees, Calif., San Lorenzo River

270

249

11

12

12

413

12

at. 203

12

285

548

37

228

26

12

444 

near Graniteville, Calif............. 442

Big Tujunga Creek near Sunland, Calif.. 

Biola, Calif., San Joaquin River near., 

Blue Lake, Calif., Redwood Creek near.. 

Bonsall, Calif., San Luis Rey River

near.............................

Borel Canal below Isabella Dam, Calif.. 

Boulder Creek at Cuyamaca Reservoir,

near Julian, Calif.

Bouton Creek near Long Beach, Calif..., 

Bowman Lake, Calif., Canyon Creek

below.

Bowman-Spaulding Canal at intake,

Calif

Boyes Hot Springs, Calif., Sonoma Creek

at.

Bradley, Calif., Salinas River near.... 

Branciforte Creek at Santa Cruz,

Calif.

Branscomb, Calif., South Fork Eel River

443

509

192

205

near............................537-538

100 

99 

98

542

Brea, Calif., Pullerton Creek near.....

Brea Creek, at Fullerton, Calif........

below Brea Dam, near Pullerton, Calif. 

Bridgeville, Calif., Van Duzen River

591
592 INDEX

Brownsville, Calif., Dry Creek near... 447 

Bryson, Calif., Nacimiento River

near............................ 189

Buchanan dam site, Calif., Chowchilla

River at........................ 288

Bucks Lake near Bucks Lodge, Calif.... 430

Buellton, Calif., La Zaca Creek at.... 159

Santa Ynez River at................. 158

Santa Ynez River near..............160,161

Bullards Bar Dam, Calif., North Yuba

River below..................... 440

Burbank western storm drain near

Glendale, Calif................. 12

Burns Reservoir near Planada, Calif... 12 

Butt Creek, above Almanor-Butt Creek

tunnel, near Prattville, Calif.. 424 

below Almanor-Butt Creek tunnel,

near Prattville, Calif.......... 425

Butte City, Calif., Sacramento River

at.............................. 408

Butte Creek (Lower Klaraath Lake basin)

near Macdoel, Calif............. 552

Butte Creek (Sacramento River basin)

near Chico, Calif............... 410

Byron, Calif., Marsh Creek near....... 372

Cache Creek, at Yolo, Calif........... 492

near Capay, Calif................... 491

near Lower Lake, Calif.............. 489

North Pork, near Lower Lake, Calif.. 490 

seepage investigation of............ 505

Cachuma Creek near Santa Ynez, Calif.. 151 

Cachuma Reservoir near Santa Ynez,

Calif........................... 152

Cajon Creek near Keenbrook, Calif..... 64

Calabasas, Calif., Malibu Creek near.. 124

Calaveras River, at Jenny Lind, Calif. 347

North Fork, near San Andreas, Calif. 344

South Pork, near San Andreas, Calif. 340

Calaveritas Creek near San Andreas,

Calif........................... 341

Calleguas Creek near Camarillo,

Calif........................... 12

Calpella, Calif., East Pork Russian

River near...................... 515

Camino, Calif., American River flume

near............................ 475

Camp Creek near..................... 365

South Pork American River near...... 476

Camino conduit, diversion by.......... 366

Camp Bonita, Calif., East Fork San

Gabriel River near.............. 87

Camp Creek, near Camino, Calif........ 365

near Somerset, Calif................ 366

Camp Rincon, Calif., West Pork San

Gabriel River at................ 88

Campo Creek near Campo, Calif......... 19

Canby, Calif., Pit River near........377-378

Canyon Creek below Bowman Lake,

Calif............................ 444

Capay, Calif., Cache Creek near....... 491

Carbon Creek, near Chino, Calif....... 12

near Yorba Linda, Calif............. 102

Carlotta, Calif., Yager Creek near.... 543

Carpinteria Creek near Carpinteria,

Calif........................... 143

Cascade Canal near Pish Lake, Oreg.... 557

Casitas Springs, Calif., San Antonio

Creek at........................ 139

Casmalia, Calif., San Antonio Creek

near............................ 170

Castaic Creek near Castaic, Calif..... 12

Cattle Mountain, Calif., Granite Creek

near............................ 257

Cedar Grove, Calif., South Fork Kings

River near...................... 243

Cfs-days, definition of............... 2

Cherry Creek near Hetch Hetchy,

Calif........................... 307

Chico, Calif., Big Chico Creek near... 405 

Butte Creek near.................... 410

Chiloquin, Oreg., Sprague River near.. 555 

Williamson River near............... 556

Chino Creek near Chino, Calif......... 12

Chiquito Creek near Arnold Meadow,

Calif........................... 266

Chittenden, Calif., Pajaro River at... 201 

Chowchilla River at Buchanan dam site

Calif........................... 288

Cisco, Calif., South Yuba River

near............................ 441

City Creek near Highland, Calif........ 60-61

old channel, near East Highlands,

Calif............................ 12

City Creek Water Co.'s canal near

Highland, Calif.................. 61

Claremont, Calif., San Antonio Creek

near............................. 79-80

Clear Creek, at French Gulch, Calif.... 392

near Igo, Calif...................... 393

seepage investigation of............. 497

Clear Lake at Lakeport, Calif.......... 488

Clear Lake Reservoir near Langell

Valley, Oreg..................... 12

Clements, Calif., Mokelumne River

near............................360-361

Cliff Camp, Calif., North Pork Kings

River near....................... 247

Clio, Calif., Middle Pork Feather

River near......................414-415

Clipper Mills, Calif., Lost Creek

near............................. 418

Cloverdale, Calif., Dry Creek near..... 520

Russian River near................... 518

Coalinga, Calif., Los Gatos Creek

near....................'......... 254

Colby Ranch, Calif., Tujunga Creek

near............................. 105

Cold Creek near Mokelumne Peak, Calif.. 353 

Colton, Calif., Warm Creek near......... 67-68

Colton southwest storm drain near

Colton, Calif.................... 12

Colusa, Calif., Sacramento River at.... 409

Compton Creek, at Compton, Calif....... 12

at Watts, Calif...................... 12

Computations, accuracy of results of... 7 

Concord, Calif, Galindo Creek at....... 222

Pine Creek at........................ 223

Conn Creek near St. Helena, Calif...... 507

Contents, definition of................ 2

Contra Costa Canal near Oakley, Calif.. 371 

Control, definition of................. 2

Cooperation, record of................. 1

Copco, Calif., Pall Creek at........... 563

Klamath River near................... 564

Corona, Calif., Santa Ana River near... 72,73 

Temescal Creek near.................. 78

Corte Madera Creek at Ross, Calif...... 512

Cosgrove Creek near Valley Springs,

Calif............................ 346

Cosumnes River, at McConnell, Calif.... 370

at Michigan Bar, Calif............... 369

near Plymouth, Calif................. 368

North Pork, near El Dorado, Calif.... 367

Cottonwood, Calif., Battle Creek near.. 396 

Cottonwood Creek near................ 395

Cottonwood Creek (Goose Lake basin)

near Lakeview, Oreg.............. 374

Cottonwood Creek (Sacramento River

basin), near Cottonwood, Calif... 395 

seepage investigation of............. 498

Cottonwood Creek (Tia Juana River

basin), above Tecate Creek, near

Dulzura, Calif................... 18

at Barrett Dam, near Dulzura, Calif.. 17 

at Morena Dam, Calif................. 16

Covelo, Calif., Middle Pork Eel River

near............................. 532

Cow Creek near Millville, Calif........ 394

Coyote Creek (tributary to San Francisco Bay), near Edenvale, Calif. 216 

near Madrone, Calif.................. 215

Coyote Creek basin, Calif., gagingstation records in..............215-216

Coyote Creek (tributary to San Gabriel

River) near Artesia, Calif....... 102

Coyote Creek (tributary to Ventura

River) near Ventura, Calif....... 140

Crannell, Calif., Little River at...... 547

Crescent City, Calif., South Fork

Smith River near................. 579

Smith River near..................... 580

Crescent Mills, Calif., Indian Creek

near............................. 426

Cubic feet per second per-square mile,

definition of.................... 2

Cubic foot per second, definition of... 2

Cucamonga Creek, near Ontario, Calif... 12

near Upland, Calif................... 74

Culver City, Calif., Ballona Creek

near............................. 122

Cupertino, Calif., Stevens Creek near.. 209
INDEX 593

Cuyama River, near Santa Maria, Calif. 172 

near Ventucopa, Calif............... 171

Cuyamaca Reservoir, Calif., monthly

contents of..................... 26

Daley Creek at Del Rosa, Calif........ 12

Dalton Creek near Glendora, Calif..... 93

Dalton Wash near Baldwin Park, Calif.. 12 

Dardanelle, Calif., Clark Pork

Stanislaus River near........... 322

Data, accuracy of..................... 7

explanation of...................... 3-7

Daulton, Calif., Fresno River near.... 287

Davis, Calif., Putah Creek near....... 496

Day Creek.near Etiwanda, Calif........ 70-71

' near Mira Loma, Calif... ............. 12

Deer Creek (tributary to Sacramento

River), near Vina, Calif........ 404

seepage investigation of............ 503

Deer Creek (tributary to Yuba River)

near Smartville, Calif.......... 446

Del Rosa Channel near San Bernardino,

Calif........................... 12

Delta, Calif., Sacramento River at.... 375

Delta-Mendota Canal near Tracy, Calif. 349 

Democrat Springs, Calif., Kern River

near............................ 232

Denny, Calif., New River near......... 58

Devil Canyon Creek near San Bernardino

Calif........................... 62

Dinsmores, Calif., Van Duzen River

near............................ 541

Discharge measurements: 

Eel River basin..................... 584

Jacoby Creek basin.................. 584

Klamath River basin.. ..............585-586

Peak discharges....................587-590

Sacramento and Eel River basins,

small basins between............ 584

San Joaquin River basin............583-584

Santa Ana River basin............... 582

Santa Maria River basin............. 582

Santa Ynez River basin.............. 582

Smith River basin................... 586

Tulare Lake basin..................582-583

Note. Streams for which only discharge measurements are available 

are not entered by name in this 

index. 

Dog Creek at Academy, Calif........... 12

Dog Creek diversion near Clovis,

Calif........................... 12

Dominquez Channel at Torrance, Calif.. 12 

Don Pedro Reservoir near La Grange,

Calif........................... 314

Dos Rlos, Calif., Eel River above..... 531

Eel River below.................4, 533-534

Downey, Calif., Los Angeles River

near............................ Ill

Rio Hondo near...................... 120

Drainage area, definition of.......... 2

Drew Creek near Lakeview, Oreg........ 373

Drew Creek Reservoir, Oreg., contents

of.............................. 373

Dry Creek (tributary to Bear River)

near Wheatland, Calif........... 452

Dry Creek (tributary to Mokelumne

River basin) near Gait, Calif... 364 

Dry Creek (tributary to Napa River)

near Napa, Calif................ 508

Dry Creek (tributary to Russian River)

near Cloverdale, Calif.......... 520

Dry Creek (tributary to San Joaquin

River) at Academy, Calif........ 12

Dry Creek (tributary to Yuba River),

at Virginia Ranch, Calif........ 448

near Brownsville, Calif............. 447

Duarte, Calif., Pish Creek near....... 4, 91

Duck Creek diversion at Parmington,

Calif........................... 12

Dulzura, Calif., Cottonwood Creek

near............................ 17,18

Dulzura conduit near................ 18

Tia Juana River near................ 20

Dulzura conduit near Dulzura, Calif... 18 

Dume Creek near Malibu, Calif......... 12

Dunneville, Calif., Pacheco Creek

near............................ 195

East Etiwanda Creek near Etiwanda, 

Calif........................ 12

East Highlands, Calif., Plunge Creek

near............................. 53-54

East Twin Creek near Arrowhead

Springs, Calif................... 58

Saton Creek near Pasadena, Calif....... 115

Saton Wash near Pasadena, Calif........ 12

Echo Lake conduit near Phillips, Calif. 463

Edenvale, Calif., Alamitos Creek near.. 210

Coyote Creek near.................... 216

Eel River, above Dos Rios, Calif....... 531

at Alderpoint, Calif................. 536

at Scotia, Calif..................... 540

at Van Ardsdale Dam, near Potter

Valley, Calif.................... 530

below Dos Rios, Calif............4, 533-534

below Scott Dam, near Potter Valley,

Calif............................ 528

Middle Pork, below Black Butte River

near Covelo, Calif............... 532

North POi-k, near Mina, Calif......... 535

South Pork near Branscomb, Calif....537-538

near Miranda, Calif................ 539

Eel River basin, Calif., gagingstation records in..............527-543

Eighth Street east conduit at Upland,

Calif............................ 12

Eighth Street west spreading grounds

at Upland, Calif................. 12

El Capitan Dam, Calif., San Diego

River at......................... 27

El Capitan Reservoir, Calif., monthly

contents of...................... 27

El Dorado, Calif., North Pork Cosumnes

River near....................... 367

51 Dorado Canal near Kyburz, Calif..... 467

El Portal, Calif., South Pork Merced

River near....................... 295

El Toro, Calif., Allso Creek at........ 45

Elder Creek, at Gerber, Calif.......... 402

near Paskenta, Calif................. 401

seepage investigation of............. 501

Eleanor Creek near Hetch Hetchy,

Calif............................ 309

Elsinore, Calif., Elsinore Lake at..... ?8

San Jacinto River near............... 77

Elsinore Lake at Elsinore, Calif.."..... 78

Englebright Dam, Calif., Yuba River at. 445

Enterprise, Calif., Palermo Canal at... 419

South Pork Feather River at.......... 420

Esperanza Creek near Mokelumne Hill,

Calif............................ 342

Estrella Creek near Estrella, Calif.... 188

Etiwanda, Calif., Day Creek near....... 70-71

Etiwanda Water Co. diversion near

Etiwanda, Calif.................. 71

Exchequer, Calif., Lake McClure at..... 298

Merced River at...................... 299

Pair Oaks, Calif., American River at... 480 

Pallbrook, Calif., Santa Margarita

River near....................... 41

Pall Creek at Copco, Calif............. 563

Palls Creek near Hetch Hetchy, Calif... 304

Feather River, at Bidwell Bar, Calif... 421

at Nicolaus, Calif................... 453

Feather River, Middle Fork, below

Sloat, Calif..................... 416

Middle Pork, near Clio, Calif.......414-415

near Merrimac, Calif............... 417

near Oroville, Calif................. 433

North Pork, at Big Bar, Calif........ 431

East Branch of, near Rich Bar,

Calif............................ 429

near Prattville, Calif............. 423

South Fork, at Enterprise, Calif..... 420

West Branch, near Yankee Hill, Calif. 432 

Fifteenth Street storm drain at

Upland, Calif.................... 12

Pillmore, Calif., Sespe Creek near....132-133

Pillmore Irrigation Co.'s canal near

Fillmore, Calif.................. 133

Pine Gold Creek near Friant, Calif..... 279

Fish Creek near Duarte, Calif.......... 4, 91

Pish Lake, Oregon., Cascade Canal

near............................. 557

Floods, special reports on............. 11

Florence Lake, near Big Creek, Calif... 258 

South Pork San Joaquin River near.... 260

Polsom Reservoir near Polsom, Calif.... 479

Pontana, Calif., Lytle Creek

near............................. 63
594 INDEX

Pontana pipeline. See Lytle Creek

near Pontana.

Forest Glen, Calif., Mad River near... 545 

Port Bragg, Calif., Noyo River near... 524 

Port Jones, Calif., Scott River near.. 567 

Pourmile Lake, Oreg., contents of..... 578

Premont Pord Bridge, Calif., San

Joaquin River at......'...,...... 290

French Gulch, Calif., Clear Creek at.. 392 

French Meadows, Calif., Middle Pork

American River at............... 457

Freshwater, Calif., Jacoby Creek

near............................ 544

Presno River, near Daulton, Calif,.... 287

near Knowles, Calif................. 286

Friant, Calif., Pine Gold Creek near.. 279 

Friant-Kern Canal at................ 282

Priant-Madera Canal near............ 281

Little Dry Creek near............... 284

Millerton Lake at................... 280

San Joaquin River below............. 283

Friant-Kern Canal at Friant, Calif.... 282

Friant-Madera Canal near Friant, Calif. 281 

Pullerton, Calif., Brea Creek at...... 99

Brea Creek near..................... 98

Pullerton Creek at.................. 101

Fullerton Creek, at Fullerton, Calif.. 101 

below Pullerton Dam, near Brea,

Calif........................... 100

Fullerton relief channel at

Pullerton, Calif................ 12

Galindo Creek at Concord, Calif....... 222

Gait, Calif., Dry Creek near.......... 364

Garey, Calif., Sisquoc River near..... 178

Georgetown, Calif., Georgetown

Divide ditch near..............459,460

Pilot Creek near.................... 461

Rubicon River near.................. 458

Georgetown Divide ditch, above Pilot

Creek near Georgetown, Calif.... 459

near Georgetown, Calif............... 460

Gerber, Calif., Elder Creek at........ 402

Gerber Reservoir near Lorella, Oreg... 12 

Gibraltar Reservoir, Calif., monthly

contents of..................... 147

Glendora, Calif., Dalton Creek near... 93 

Little Dalton Creek near............ 94

Goleta, Calif., Atascadero Creek near. 144 

San Jose Creek near................. 145

Goodyears Bar, Calif., North Yuba

River below..................... 439

Goose Lake basin, Oreg., gagingstation records in.............373-374

Granite Creek near Cattle Mountain,

Calif........................... 257

Graniteville, Calif., Bowman Lane

near............................ 442

Grayson Creek near Hookston, Calif.... 224

near Pacheco, Calif................. 225

Guadalupe, Calif., Guadalupe Creek at. 211 

Santa Maria River at................ 178

Guadalupe Creek at Guadalupe, Calif... 211 

Guadalupe River at San Jose, Calif.... 213

Guadalupe River basin, Calif., gagingstation records in.............210-214

Gualala River, South Pork, near

Annapolis, Calif................ 522

Guejito Creek, at San Pasqual, Calif.. 33 

near San Pasqual, Calif............. 32

Guenoc, Calif., Putah Creek near...... 494

Guerneville, Calif., Russian River at. 521

Haines Creek near Tujunga, Calif...... 107

Hamilton City, Calif., Stony Creek

near............................ 407

Hansen Dam Calif., Tujunga Creek

below........................... 108

Harrison Creek at Del Rosa, Calif..... 12

Hat Creek near Hat Creek, Calif....... 380

Hayfork Creek near Hyampom, Calif..... 572

Hayward, Calif., San Lorenzo Creek at. 218 

Healdsburg, Calif., Russian River

near............................ 519

Hells Half Acre Bridge, Calif.,

Middle Pork Stanislaus River at. 323 

Helms Creek at Sand Meadows, Calif.... 246 

Hemet, Calif., Bautista Creek near.... 77 

Hetch Hetchy, Calif., Cherry Creek

near............................ 307

Eleanor Creek near.................. 309

Page

Hetch Hetchy, Calif., Falls Creek near. 304 

Hetch Hetchy Reservoir at............ 305

Lake Eleanor near.................... 308

Tuolumne River near.................. 306

Hetch Hetchy Reservoir at Hetch Hetchy,

Calif............................ 305

Highland, Calif., City Creek near...... 60-61

Highland Creek (Sacramento River basin)

near Kelseyville, Calif.........485-486

Highland Creek (San Joaquin River

basin) below Spicer Meadows

Reservoir, Calif................. 326

Hollister, Calif., San Benito River

near............................. 200

Hookston, Calif., Grayson Creek near... 224 

Hoopa, Calif., Trinity River near...... 574

Hopland, Calif., Russian River near.... 517

Hopper Creek near Piru, Calif.......... 130

Huasna River near Santa Maria, Calif... 174 

Hume, Calif., Kings River near......... 244

Huntington Lake, Calif., Big Creek

below............................ 270

Huntington Lake near Big Creek, Calif.. 269 

Huntington-Shaver conduit at outlet,

Calif............................ 272

Hyampom, Calif., Hayfork Creek near.... 572

Hyatt Prairie Reservoir, Oreg.,

contents of...................... 578

Hydrologic conditions.................. 14

graph................................ 15

Ice House, Calif., South Pork Silver

Creek near....................... 473

Igo, Calif., Clear Creek near,......... 393

Indian Creek near Crescent Mills,

Calif............................ 426

Iron Creek, Calif., North Fork San

Joaquin River below.............. 255

Irvine, Calif., San Diego Creek near... 46 

Isabella Dam, Calif., Borel Canal

below............................ 228

Kern River below..................... 231

Isabella Reservoir near Isabella,

Calif............................ 230

"J" Canal, Oreg........................ 12

Jack Creek near Templeton, Calif....... 186

Jackass Creek near Jackass Meadow,

Calif............................ 265

Jacksonville, Calif., Woods Creek near. 313 

Jacoby Creek near Freshwater, Calif.... 544

Jameson Lake, Calif., monthly contents

of............................... 146

Jamul Creek near Jamul, Calif.......... 21

Jenkinson Lake, change in contents in.. 366 

Jenny Lind, Calif., Calaveras River.at. 347 

Jesus Maria Creek near Mokelumne Hill,

Calif............................ 343

Julian, Calif., Boulder Creek near..... 26

Kaweah River, Marble Fork, at Potwisha

Camp, Calif...................... 240

near Three Rivers, Calif............. 242

North Fork, at Kaweah, Calif......... 241

Keddie, Calif., Spanish Creek at....... 428

Keenbrook, Calif., Cajon Creek near.... 64 

Lone Pine Creek near................. 65

Keene Creek at Hyatt Prairie, near

Ashland, Oreg.................... 565

Kelsey Creek near Kelseyville, Calif... 487

Kelseyville, Calif., Adobe Creek

near............................183-184

Highland Creek near.................485-486

Kelsey Creek near.................... 487

 Kennedy Meadows, Calif., Middle Pork

Stanislaus River at.............. 321

Keno, Oreg., Klamath River at.......... 562

Kerckhoff powerhouse, Calif., San

Joaquin River below.............. 278

Kern River, at Kernville, Calif........ 227

below Isabella Dam, Calif............ 231

below Kern Canyon powerhouse, Calif.. 233 

near Democrat Springs, Calif......... 232

near Kernville, Calif................ 226

South Fork, near Onyx, Calif......... 229

,Kern River basin, Calif., gagingstation records in..............226-233

Kernville, Calif., Kern River at....... 227

Kern River near...................... 226

Keswick, Calif., Sacramento River at... 391

Kings County, Calif., Tulare Lake in... 234
INDEX 595

Page 

Kings River, above North Pork, Calif.. 245 Lakes and reservoirs Continued

at Pledra, Calif....................15,253

below North Pork, Calif, 

below Pine Plat Dam, Calif.

248 

252 

near Hume, Calif.................... 244

North Fork, near Cliff Camp, Calif.. 247 

South Fork, near Cedar Grove,

Calif........................... 243

Klrkwood, Calif., Silve-r Lake Outlet

near............................ 465

Twin Lakes Outlet near.............. 466

Klamath Agency, Oreg., Wllllamson

River near...................... 553

Klamath Palls, Oreg., "A" Canal at.... 558

Link River at....................... 560

Upper Klamath Lake near............. 559

Klamath River, at Keno, Oreg.......... 562

at Somesbar, Calif.................. 570

below Pall Creek, near Copco, Calif. 564 

diversion from, to Lost River near

Olene, Oreg..................... 561

near Klamath, Calif................575-577

near Selad Valley, Calif............ 568

Klamath River basin, Calif.-Oreg.,

gaglng-statlon records In......553-577

smaller reservoirs In............... 578

Knights Ferry, Calif., Oakdale Canal

near............................ 335

South San Joaquln Canal near........ 334

Knights Landing, Calif., Sacramento

River at........................ 412

Knowles, Calif., Fresno River near.... 286

Kyburz, Calif., El Dorado Canal

near............................. 467

South Pork American River near.....468-469

La Brea Creek, Calif., near Slsquoc,

Calif....................;...!.. 176

La Grange, Calif., Don Pedro Reservoir

near............................ 314

Modesto Canal near.................. 316

Tuolumne River near................. 315

Turlock Canal near.................317-318

La Tuna Creek near Sun Valley, Calif.. 12 

La Veta Avenue storm drain at Orange

Calif.......................;... 12

La Zaca Creek at Bue^lton, Calif...... 159

Lake Alraanor near Prattvllle, Calif... 

Lake Eleanor near Hetch Hetchy, Calif. 

Lake Henshaw, Calif., monthly contents

of..............................

Lake Hodges, Calif., monthly contents

of..............................

San Dlegulto River at...............

Lake Loveland, Calif., monthly

contents of.

422

308

35

34

34

24 

Lake McClure at Exchequer, Calif ...... 298

Lake Plllsbury near Potter Valley,

Calif........................... 527

Lake Piru near Plru, Calif............ 127

Piru Creek above.................... 126

Lake Thomas A. Edison, Calif., Bear

Creek near..................... 261

near Big Creek, Calif..............262-263

Mono Creek below.................... 264

Lakeport, Calif., Clear Lake at....... 488

Lakes and reservoirs:

Almanor, Lake, near Prattvllle, Calif. 422 

Barrett Reservoir, Calif............. 17

Bear Reservoir near Planada,

Calif........................... 11

Big Dry Creek Reservoir near

Clovls , Calif................... 12

Bowman Lake near Granltevllle,

Calif........................... 442

Bucks Lake near Bucks Lodge,

Calif........................... 4so

Burns Reservoir near Planada,

Calif........................... 12

Cachuma Reservoir near Santa Ynez,

Calif........................... 152

Clear Lake at Lakeport, Calif....... 488

Clear Lake Reservoir near Langell,

Oreg............................. 12

Cuyamaca Reservoir, Calif........... 26

Don Pedro Reservoir near La Grange

Calif........................... 314

Drew Creek Reservoir, Calif......... 373

El Capltan Reservoir, Calif......... 27

Eleanor, Lake, near Hetch Hetchv ,

Calif......................:.... 308

Elslnore Lake at Elslnore, Calif..... 78

Florence Lake near Big Creek, Calif.. 279 

Polsom Reservoir near Folsom, Calif.. 479 

Pourmlle Lake, Calif.....'............ 578

Gerber Reservoir near Lorella, Oreg.. 12 

Gibraltar Reservoir, Calif........... 147

Henshaw, Lake, Calif................. 35

Hetch Hetchy Reservoir at Hetch

Hetchy, Calif.................... 305

Hodges, Lake, Calif., ............... 34

Huntlngton Lake near Big Creek,

Calif............................ 269

Hyatt Prairie Reservoir, Oreg........ 578

Isabella Reservoir near Isabella,

Calif............................ 230

Jameson Lake, Calif.................. 146

Jenklnson Lake, Calif., change In

contents......................... 366

Lost Creek Reservoir, Calif., change

In contents...................... 418

Loveland, Lake, Calif................ 24

McClure, Lake, at Exchequer, Calif... 298 

Marlposa Reservoir near Le Grand,

Calif............................ 13

 Matlllja Reservoir at Matlllja Hot

Springs, Calif................... 136

Melones Reservoir, Calif............. 332

Mlllerton Lake at Prlant, Calif...... 280

Otay Reservoirs, Calif............... 22-23

Owens Reservoir near Planada, Calif.. 13 

Plllsbury, Lake, near Potter Valley,

Calif............................ 527

Pine Plat Reservoir near Pledra,

Calif............................ 251

Plru, Lake, near Plru, Calif......... 127

Sallnas Reservoir near Pozo, Calif... 182 

Salt Springs Reservoir near West

Point, Calif..................... - - - - 35083

390 

273 

29 

25 

261

Santiago Reservoir, Calif..

Shasta Lake near Redding, Calif......

Shaver Lake near Big Creek, Calif..., 

Sutherland Reservoir, Calif..........

Sweetwater Reservoir, Calif..........

Thomas A. Edison, Lake, Calif........

Upper Klamath Lake near Klamath

Falls, Oreg......................

Vail Lake, Calif.....................

559

38

374

373

359

Lewlston, Calif., Trinity River at.....15,571

Lakevlew, Oreg., Cottonwood Creek near. 

Drew Creek near.

Lanoha Plana, Calif., Mokelumne River 

at.

Likely, Calif.,'South Pork Pit River

376

Limekiln Creek near Chatsworth, Calif.. 12

Llndo Channel. See Big Chloo Creek,

Llndo ChanneJ. 

Link River at Klamath Falls, Oreg...... 560

Little Dalton Creek near Glendora,

Calif............................

Little Dry Creek near Prlant, Calif....

Little River at Crannell, Calif.

Little San Gorgonlo Creek near Beaumont, Calif...

Little Sand Creek at Del Rosa, Calif.., 

Little Santa Anita Creek near Sierra 

Madre, Calif.

Little Tujunga Creek near San Fernando,

Calif.

Littlejchn Creek at Farmlngton, Calif.., 

Live Oak Creek near La Verne, Calif..., 

Live Oak Wash at La Verne, Calif.......

Llagas Creek near Morgan Hill, Calif... 

Lockeford, Calif., Bear Creek near....,

Loma Linda, Calif., San Tlmoteo Creek

near.............................

Lompoc, Calif., Salslpuedes Creek

near.

94

284

547

56

12

114

108

12

12

12

196

348

57

Santa Ynez River hear 162,163, 165,166, 167, 163- 

Lone Pine Creek near Keenbrook,

Calif............................ 65

Long Barn, Calif., South Fork Stanislaus River near.................

Tuolumne Canal near.................

Long Beach, Calif., Los Angeles River 

at.

331

330

Los Alamltos, Calif., San Gabriel River 

near.............................

Los Angeles River at Long Beach, Calif.

121

98

121
596 INDEX

Page 

Los Angeles River, at Los Angeles,

Calif........................... 109

at North Hollywood, Calif........... 12

at Sepulveda Dam, Calif............. 103

at Studio City, Calif............... 12

near Burbank, Calif................. 12

near Downey, Calif.................. Ill

Los Angeles River basin, Calif.,

gaglng-station records in......103-121

Los Banos, Calif., Salt Slough

near............................ 289

Los Cerritos Channel near Long Beach,

Calif........................... 12

Los Gatos Creek (Guadalupe River

basin) at Los Gatos, Calif...... 212

Los Gatos Creek (Tulare Lake basin) 

above Nunez Canyon, near 

Coalinga, Calif................. 254

Los Molinos, Calif., Mill Creek

near............................ 400

Lost Creek near Clipper Mills, Calif.. 418 

Lost Creek Reservoir, monthly change

in contents in.................. 418

Lost River, at Lost River diversion

dam............................. 13

near Bonanza, Oreg.................. 12

near Merrill, Oreg.................. 13

Lost River diversion canal near Olene,

Oreg............................ 550

Lotus Calif., South Fork American

River near...................... 477

Lower Klamath Lake basin, Calif.,

gaging-station records in......551-552

Lower Lake, Calif., Cache Creek near.. 489 

North Fork Cache Creek near......... 490

Lytle Creek, east channel of, at San

Bernardino, Calif ................ 66

near Fontana, Calif................. 63

McCloud, Calif., Angel Creek near..... 386

McCloud River near.............385,387,388

McCloud River, above Panther Creek near

McCloud, Calif.................. 388

above Shasta Lake, Calif............ 389

below Big Springs near McCloud,

Calif........................... 385

near McCloud, Calif................. 387

McConnell, Calif., Cosumnes River at.. 370 

Macdoel, Calif., Butte Creek near..... 552

Macey debris basin near San

Bernardino, Calif............... 13

Mad River, near Forest Glen, Calif.... 545

near Arcata, Calif.................. 546

Mad River basin, Calif., gagingstation records in.............545-546

Madrone, Calif., Coyote Creek near.... 215

Malibu Creek at Crater Camp, near

Calabasas, Calif .....m .......... 124

Map of the United States.............. 9

Mariposa Reservoir near Le Grand,

Calif............'............... 13

Marsh Creek near Byron, Calif......... 372

Marysville, Calif., Yuba River at..... 449

Matadero Creek at Palo Alto, Calif.... 208

Matilija Creek, above reservoir, near

Matilija Hot Springs, Calif..... 135

at Matilija Hot Springs, Calif...... 137

North Fork, at Matilija Hot Springs,

Calif........................... 138

Matilija Reservoir at Matilija Hot

Springs, Calif.................. 136

Mattole River, near Petrolia, Calif... 525 

North Fork at Petrolia, Calif....... 526

Mattole River basin, Calif., gagingstation records in.............525-526

Meeks & Daley Canal near Colton,

Calif........................... 68

Melones powerhouse, Calif., Stanislaus

River below..................... 333

Melones Reservoir at Melones Dam,

Calif........................... 332

Mentone, Calif., Mill Creek near...... 52

Santa Ana River near................ 48-49

Merced River, at Bagby, Calif........296-297

at Exchequer, Calif................. 299

at Happy Isles Bridge, near

Yosemite, Calif................. 291

at Pohono Bridge, near Yosemite,

Calif........................... 294

near Stevinson, Calif............... 300

South Fork, near El Portal, Calif... 295

Merced River Slough near Newman,

Calif............................ 301

Merrimac, Calif., Middle Fork Feather

River near....................... 417

Mesa Grande, Calif., San Luis Rey

River at......................... 35

Michigan Bar, Calif., Cosumnes River

at............................... 369

Middle Creek near Upper Lake, Calif.... 13

Middle Tuolumne River at Oakland

Recreation Camp, Calif........... 312

Middle Yuba River, above Oregon Creek,

Calif............................ 437

at Milton, Calif..................... 436

Midland Canal, diversion by............ 562

Mill Creek (Sacramento River basin),

near Los Molinos, Calif.......... 400

seepage investigation of............. 500

Mill Creek (Santa Ana River basin),

near Mentone, Calif.............. 52

near Yucaipa, Calif.................. 50-51

Mill Creek power canals Nos .1,2, and 3 51 

Miller Crossing, Calif., San Joaquin

River at......................... 256

Millerton Lake at Friant, Calif........ 280

Millville, Calif., Cow Creek near...... 394

Milton, Calif., Middle Yuba River at... 436 

MiIton-Bowman tunnel at outlet,

Calif............................ 435

Mina, Calif., North Fork Eel River

near............................. 535

Miranda, Calif., South Fork Eel River

near............................. 539

Mission Creek, below Whittier Narrows

Dam, Calif....................... 119

near Montebello, Calif............... 118

Mission ditch,near Loma Linda, Calif... 13 

near Montebello, Calif............... 13

Modesto, Calif., Tuolumne River at..... 320

Modesto Canal near La Orange, Calif.... 316

Mokelumne Hill, Calif., Esperanza

Creek near....................... 342

Jesus Maria Creek near............... 343

Mokelumne River near................ 357-358

Mokelumne Peak, Calif., Cold Creek

near............................. 353

Mokelumne River, at Lancha Plana,

Calif............................ 359

at Woodbridge, Calif................. 363

Middle Fork, at West Point, Calif.... 355

near Clements, Calif................360-361

near Mokelumne Hill, Calif........... 357

North-Fork, below Salt Springs Dam,

Calif............................ 352

South Fork, near West Point, Calif... 356 

Mono Creek below Lake Thomas A. Edison,

Calif............................ 264

Monrovia, Calif., Sawpit Creek near.... 112

Monrovia Creek near Monrovia, Calif.... 13

Monrovia storm drain at Monrovia,

Calif............................ 13

Montebello, Calif., Mission Creek

near............................. 118

Rio Hondo near....................... 117

Montebello storm drain at Montebello,

Calif............................ 13

Montecito, Calif., Santa Ynez River

near............................. 146

Montgomery Creek, Calif., Pit River

near............................. 383

Morena Dam, Calif., Cottonwood Creek

at............................... 16

Morena Reservoir, Calif., monthly

contents of...................... 16

Morgan Hill, Calif., Llagas Creek

near............................. 196

Uvas Creek near...................... 197

Murray Creek near San Andreas, Calif... 345 

Murrieta Creek at Temecula, Calif...... 39

Nacimi'ento River, near Bryson, Calif... 189 

near San Miguel, Calif............... 190

Napa, Calif., Dry Creek near........... 508

Napa River near St. Helena, Calif...... 506

Napa River basin, Calif., gagingstation records in..............506-508

Navarro River near Navarro, Calif...... 523

Nestor, Calif,, Tia Juana River near... 21 

New River near Denny, Calif............ 581

Newman, Calif., Merced River Slough

near............................. 301
INDEX 597

Newman, Calif., Orestimba Creek near.. 303 

San Joaquln River near.............. 302

Nicolaus, Calif., Feather River at.... 453

Miles, Calif., Alameda Creek near..... 217

Nineteenth Street storm drain at

Upland, Calif................... 13

North Drew Canal, Oreg., diversion

by.............................. 373

North Pork, Calif., Kings River above. 245 

Kings River below................... 248

North Fork Dam, Calif., North Pork

American River at............... 456

North San Juan, Calif., Oregon Creek

near............................ 438

North Yuba River, below Bullards Bar

Dam, Calif...................... 440

below Goodyears Bar, Calif.......... 439

Novato Creek near Novato, Calif....... 511

Noyo River near Port Bragg, Calif..... 524

Oakdale Canal near Knights Perry,

Calif........................... 335

Oakland Recreation Camp, Calif.,

Middle Tuolumne River at........ 312

South Pork Tuolumne River near.....310-311

Oakley, Calif., Contra Costa Canal

near............................ 371

Oceanside, Calif., San Luis Rey River

at.............................. 38

Olene, Oreg., diversion from Klamath

River to Lost River near........ 561

Lost River diversion canal near..... 550

O'Neill ditch near Ysidora, Calif..... 42

Onyx, Calif., South Pork Kern River

near............................ 229

Order, downstream, of listing gaging

stations........................ 2-3

Oregon Creek, Calif., Middle Yuba

River above..................... 437

near North San Juan, Calif.......... 438

Orestimba Creek near Newman, Calif.... 303

Orick, Calif., Redwood Creek at....... 549

Orland, Calif., Stony Creek near...... 406

Oroville, Calif., Feather River near.. 433 

Oroville-Wyandot Canal, diversion to.. 418 

Otay Reservoirs, Calif., monthly

contents of..................... 22-23

Otay River at Savage Dam, Calif...... 22-23

Otay River basin, gaging-station

records in...................... 21-23

Owens Reservoir near Planada, Calif... 13

Pacheco, Calif., Grayson Creek near... 225 

Pacheco Creek near Dunneville,

Calif........................... 195

Pacheco Creek basin, gaging-station

records in..................... 219-225

Pacific Gas & Electric Co. conduit

No. 3 near Bass Lake, Calif..... 275 

Pacoima Creek near San Fernando,

Calif........................... 104

Pacoima diversion near Van Nuys,

Calif........................... 13

Pacoima Wash near Van Nuys, Calif..... 13

Pajaro River at Chittenden, Calif..... 201

Pajaro River basin Calif., gagingstation records in.............195-201

Pala, Calif., San Luis Rey River

near............................ 36,37

Palermo Canal at Enterprise, Calif.... 419

Palo Alto, Calif., Matadero Creek at.. 208 

Pasadena, Calif., Arroyo Seco near....15,110

Eaton Creek near.................... 115

Paskenta, Calif., Elder Creek near.... 401

Thomes Creek at..................... 403

Paso Robles, Calif., Salinas River at. 187 

Paynes Creek near Red Bluff, Calif.... 397

Pescadero Creek near Pescadero,

Calif......... .................. 206

Petaluma Creek near Petaluma, Calif... 510 

Peters Canyon Wash near Santa Ana,

Calif........................... 13

Petrolia, Calif., Mattole River near.. 525 

North Fork Mattole River at......... 526

Philadelphia Canal near Strawberry,

Calif........................... 329

Phillips, Calif., Echo Lake conduit

near............................ 463

Pyramid Creek near.................. 464

Pico, Calif., San Gabriel River at.... 971

493801 O - 59 - 39

Page 

Piedra, Calif., Kings River at.........15,253

Pine Plat Reservoir near............. 251

Pilot Creek near Georgetown, Calif..... 461

Pine Creek (Pacheco Creek basin) at

Concord, Calif................... 223

Pine Creek (Sacramento River basin),

seepage investigation of......... 503

Pine Flat Dam, Calif., Kings River

below............................ 252

Pine Flat Reservoir, Calif., Big Creek

above............................ 249

near Piedra, Calif................... 251

Sycamore Creek above................. 250

Piru, Calif., Hopper Creek near........ 130

Piru Creek near...................... 129

Lake Piru near....................... 127

Piru Creek above Lake Piru, Calif...... 126

below Santa Felicia Dam, Calif....... 128

near Piru, Calif..................... 129

Pit River, at Big Bend, Calif.......... 382

below Pit No. 4 Dam, Calif........... 381

near Bieber, Calif................... 379

near Canby, Calif...................377-378

near Montgomery Creek, Calif......... 383

South Pork, near Likely, Calif....... 376

Pitman Creek below Tamarack Creek,

Calif............................ 271

Placer!ta Creek near Saugus, Calif..... 13

Placerville, Calif., Silver Creek near. 474 

Pleyto, Calif., San Antonio River

at............................... 191

Plunge Creek near East Highlands,

Calif............................ 53-54

Plymouth, Calif., Consumnes River

near............................. 368

Point Reyes station, Calif., Arroyo

Nicasio near..................... 513

Porterville, Calif., Tule River

near........................236-237,239

Portola, Calif., Big Grizzly Creek

near............................. 413

Potato Creek near Yucaipa, Calif....... 13

Potter Valley, Calif., Eel River

near............................ 528,530

Lake Pillsbury near.................. 527

Potter Valley powerhouse tailrace

near............................. 529

Potter Valley powerhouse tailrace near

Potter Valley, Calif............. 529

Potwisha Camp, Calif., Marble Fork

Kaweah River at.................. 240

Pozo, Calif., Salinas Reservoir near... 184 

Salinas River near................... 182

Toro Creek near...................... 183

Prado Dam, Calif., Santa Ana River

below............................ 81,82

Prattville, Calif., Butt Creek near...424,425 

Lake Almanor near.................... 422

North Pork Feather River near........ 423

Publications, on streamflow by Geological Survey....................... 8-11

by State agencies.................... 11

Puddingstone Creek near San Dimas,

Calif............................

Puddingstone diversion channel at La

Verne, Calif.....................

Putah Creek, near Davis, Calif.........

near Guenoc, Calif...................

near Winters, Calif..................

Pyramid Creek near Phillips, Calif.....

Ramona, Calif., Santa Maria Creek

near.............................

Santa Ysabel Creek near..............

Reche Canyon Creek near Loma Linda,

Calif............................

Red Bank Creek, Calif., seepage investigation of......................

Red Bluff, Calif., Antelope Creek

near............................. 399

Paynes Creek near.................... 397

Sacramento River near................ 398

Redding, Calif., Shasta Lake near...... 390

Redlands, Calif., San Timoteo Creek

near............................. 56

Redwood Creek, at Orick, Calif.......... 549

near Blue Lake, Calif................ 548

Redwood Creek basin, Calif., gagingstation records in..............548-549

Reservoirs. See Lakes and reservoirs.

13

13

496

494

495

464

33

30

13

499
598 INDEX

Rlalto baseline storm drain near

San Bernardino, Calif........... 13

Rich Bar, Calif., East Branch of North

Pork Feather River near......... 429

LJ.O Hondo above Whittier Narrows Dam,

Calif........................... 116

near El Monte, Calif................ 13

near Downey, Calif.................. 120

near Montebello, Calif.............. 117

Rio Hondo bypass channel near

Whittier, Calif................. 13

Ripon, Calif., Stanislaus River at.... 336

Rogers Creek near Azusa, Calif........ 90

ROBS Calif., Corte Madera Creek at.... 512

Rubicon River near Georgetown, Calif.. 458 

Rubio Wash near San Gabriel, Calif... 13 

Runoff in inches, definition of....... 2

Russian River, at Guerneville, Calif.. 521 

East Pork, near Calpella, Calif..... 515

near Ukiah, Calif................. 516

near Cloverdale, Calif.............. 518

near Healdsburg, Calif.............. 519

near Hopland, Calif................. 517

near Ukiah, Calif. .................. 514

Russian River basin, Calif., gagingstation records in.............514-521

Sacramento, Calif., American River

at.............................. 481

Sacramento River at................. 482

Sacramento weir near................ 455

Sacramento River, at Butte City,

Calif..................... ...... 408

at Colusa, Calif.................... 409

at Delta, Calif..................... 375

at Keswick, Calif................... 391

at Knights Landing, Calif........... 412

at Sacramento, Calif................ 482

at Verona, Calif.................... 454

below Wilklns Slough, Calif......... 411

near Red Bluff, Calif............... 398

Sacramento River basin, Calif.,

gaging-station records in......375-496

seepage investigations in..........497-505

Sacramento weir near Sacramento,

Calif. .......................... 455

St. Helena, Calif., Conn Creek near... 507 

Napa River near..................... 506

Salinas Reservoir near Pozo, Calif.... 184

Salinas River, above Pilitas Creek,

near Santa Margarita, Calif..... 185

at Paso Robles, Calif............... 187

near Bradley, Calif................. 192

near Pozo, Calif.................... 182

near Spreckels, Calif............... 194

Salinas River basin, Calif., gagingstation records in.............182-194

Salmon Palls, Calif., Weber Creek

near............................ 478

Salmon River at Somesbar, Calif. ...... 569

Salslpuedes Creek near Lompoc,

Calif. 

Salt Creek near Elsinore, Calif.......

Salt Slough near Los Banos, Calif....,

Salt Springs Dam,' Calif., Bear River 

near............................

North Pork Mokelumne River below....

Tiger Creek powerhouse conduit

below...........................

Salt Springs Reservoir near West

Point, Calif.................. ..

Salyer, Calif., South Pork Trinity

River near......................

San Andreas, Calif., Calaveritas

Creek near......................

Murray Creek near...................

North Fork Calaveras River near.....

San Antonio Creek near.............

South Fork Calaveras River near.

San Antonio Creek (San Joaquin River 

basin) near San Andreas, Calif..

San Antonio Creek (Santa Ana 'River

basin) near Claremont, Calif....

San Antonio Creek (tributary to

Pacific Ocean) near Casmalia, 

Calif...........................

San Antonio Creek (ventura River 

basin) at Casitas Springs, 

Calif...........................

San Antonio River at Pleyto, Calif...

340

339

79-80

170

139

191

San Benito River, near Hollister,

Calif............................ 200

near Willow Creek School, Calif...... 198

San Bernardino, Calif., Devil Canyon

Creek near....................... 62

Lytle Creek (east channel) at........ 66

Santa Ana River near................. 55

3an Diego Creek near Irvine, Calif..... 46

San Diego River, at El Capitan Dam,

Calif............................ 27

near Santee, Calif................... 28

San Diego River basin, Calif., gagingstation records in............... 26-28

San Dieguito River, at Lake Hodges,

Calif............................ 34

near San Pasqual, Calif.............. 34

San Dieguito River basin Calif.,

gaging-station records in........ 29-34

San Dimas Creek near San'Dimas, Calif. 13,92 

San Dimas Wash near San Dimas, Calif... 13 

San Domingo Creek near San Andreas,

Calif............................ 338

San Fernando, Calif., Little Tujunga

Creek near....................... 108

Pacoima Creek near................... 104

San Francisquito Creek at Stanford

University, Calif................ 207

San Gabriel-Azusa conduit diversion

near Azusa, Calif........:....... 13

San Gabriel-Azusa Duarte tunnel diversion near Azusa, Calif........... 13

San Gabriel bypass channel near

Whittier, Calif.................. 13

San Gabriel River, above Whittier

Narrows Dam, Calif............... 95

at Pico, Calif....................... 97

at Spring Street, near Los Alamltos,

Calif............................ 98

below Santa Pe Dam, near Baldwin

Park, Calif...................... 91

East Pork, near Camp Bonita, Calif... 87 

near Azusa, Calif.................... 13,89

near El Monte, Calif................. 13

near Santa Fe Springs, Calif......... 13

West Pork, at Camp Rincon, Calif..... 88

at Cogswell Dam, Calif............. 14

San Gabriel River basin, Calif.,

gaging-station records in........87-102

San Jaclnto River, near Elsinore,

Calif............................ 77

near Perris, Calif................... 13

near San Jacinto, Calif............13,75-76

San Joaquin River, above Big Creek,

Calif............................ 267

above Willow Creek, near Auberry,

Calif............................ 274

at Premont Ford Bridge , Calif........ 290

at Miller Crossing, Calif............ 256

below Priant, Calif.................. 283

below Kerckhoff powerhouse, Calif.... 278

near Biola, Calif.................... 285

near Newman, Calif................... 302

near Vernalis, Calif................. 337

North Fork, below Iron Creek, Calif.. 255 

South Pork, near Florence Lake,

Calif............................ 260

,San Joaquin River basin, Calif.,

gaging-station records in.......255-372

San Jose, Calif., Guadalupe River at... 213 

San Jose Creek (tributary to Pacific

Ocean) near Goleta, Calif........ 145

San Jose Creek (tributary to San

Gabriel River) near Whittier,

Calif............................ 96

San Juan Capistrano, Calif., San Juan

Creek near....................... 43-44

Trabuco Creek near................... 45

San Juan Creek near San Juan Capistrano , Calif..................... 43-44

San Juan Creek basin, Calif., gagingstation records in............... 43-45

San Lorenzo Creek at Hayward, Calif.... 218

San Lorenzo River, at Big Trees,

Calif............................ 203

at Santa Cruz, Calif................. 204

San Lorenzo River basin, Calif.,

gaging-station records in.......203-205

San Luls Rey River, at Lake Henshaw,

near Mesa Grande, Calif.......... 35

at Monserate Narrows, near Pala,

Calif............................ 37
INDEX 599

San Luis Rey River, at Oceanside,

Calif........................... 38

below Pala diversion dam, near Pala,

Calif........................... 36

near Bonsall, Calif................. 37

San Luis Rey River basin, Calif.,

gaging-station records in....... 35-38

San Miguel, Calif., Naoimiento River

near............................ 190

San Pasqual, Calif., Guejito Creek

at. ............................. 33

Guejito Creek near.................. 32

San Dieguito River near............. 34

Santa Ysabel Creek near............. 31

San Ramon Creek, at San Ramon, Calif.. 219 

at Walnut Creek, Calif.......'....... 220

San Sevaine Creek near Pontana,

Calif........................... 13

San Simeon, Calif., Arroyo de la Cruz

near............................ 180

San Timoteo Creek, near Loma Linda,

Calif........................... 57

near Redlands, Calif................ 56

Sand Meadows, Calif., Helms Creek at.. 246 

Santa Agueda Creek near Santa Ynez,

Calif........................... 154

Santa Ana, Calif., Santa Ana River at. 86 

Santiago Creek at................... 85

Santa Ana-Delhi drain near Costa

Mesa, Calif..................... 13

Santa Ana River, at Auburndale Bridge,

near Corona, Calif.............. 73

at county line, below Prado Dam,

Calif...,....................... 82

at Hamner Avenue, near Corona,

Calif........................... 72

at Riverside Narrows, near

Arlington, Calif................ 69

at Santa Ana, Calif................. 86

below Prado Dam, Calif.............. 81

near Mentone, Calif................. 48-49

near Olive, Calif................... 13

near San Bernardino, Calif.......... 55

Santa Ana River basin, Calif., gagingstation records in............... 47-86

Santa Anita Creek, near Arcadia,

Calif........................... 13

near Sierra Madre, Calif............ 113

Santa Barbara, Calif., Santa Ynez

near...........................147,148

Santa Clara River, at Long, Calif..... 13

at Los Angeles-Ventura County line,

Calif........................... 125

near Montalvo, Calif................ 13

near Saugus, Calif.................. 13

Santa Clara River basin, Calif.,

§ aging-station records in..... .125-134 ruz, Calif., Branciforte Creek 

at.............................. 205

San Lorenzo River at................ 204

Santa Cruz Creek near Santa Ynez,

Calif........................... 150

Santa Fe Channel below Santa Fe Dam,

Calif........................... 13

Santa Felicia Dam, Calif., Piru Creek

below........................... 128

Santa Margarita, Calif., Salinas

River near...................... 185

Santa Margarita River, at Ysidora,

Calif........................... 42

near Fallbrook, Calif............... 41

near Temecula, Calif................ 40

Santa Margarita River basin, Calif.,

gaging-station records in....... 38-42

Santa Maria, Calif., Alamo Creek near. 173 

Cuyama River near................... 172

Huasna River near................... 174

Santa Maria Creek near Ramona, Calif.. 33 

Santa Maria River at Guadalupe,

Calif........................... 178

Santa Maria River basin, Calif.,

gaging-station records in..... .171-178

Santa Paula Creek near Santa Paula,

Calif.........................;. 134

Santa Ynez, Calif., Cachuma Creek

near............................ 151

Cachuma Reservoir near.............. 152

Santa Agueda Creek near............. 154

Santa Cruz Creek near............... 150

Santa Ynez River near..........149,153,156

ZanJa Cota near..................... 155

Page 

Santa Ynez River, above Gibraltar Dam,

near Santa Barbara, Calif........ 147

at barrier, near Surf, Calif......... 169

at Buellton, Calif................... 158

at Cooper's Reef, near Lompoc,

Calif.. .......................... 162

at Grand Avenue, near Santa Ynez,

Calif............................ 156

at H Street, near Lompoc, Calif...... 167

at Jameson Lake, near Montecito,

Calif............................ 146

at narrows, near Lompoc, Calif....... 165

at Santa Rosa Dam site, near

Buellton, Calif.................. 161

at Solvang, Calif.................... 157

at Thirteenth Street, near Lompoc,

Calif............................ 168

below Gibraltar Dam, near Santa

Barbara, Calif................... 148

below Los Laureles Canyon, near

Santa Ynez, Calif................ 149

below Santa Rita Creek, near Lompoc,

Calif............................ 163

near Buellton, Calif................. 160

near Lompoc, Calif................... 166

near Santa Ynez, Calif............... 153

Santa Ynez River basin, Calif., gagingstation records in..............146-169

Santa Ysabel Creek, at Sutherland Dam,

Calif............................ 29

near Ramona, Calif................... 30

near San Pasqual, Calif.............. 31

Santee, Calif., San Diego River near... 28 

Santiago Creek, at Santa Ana, Calif.... 85

at Santiago Dam, near Villa Park,

Calif.......... .................. 83

near Little Rock, Calif.............. 13

near Villa Park, Calif............... 84

Santiago Reservoir, Calif., change in

contents in...................... 83

Saratoga Creek at Saratoga, Calif...... 214

Savage Dam, Calif., Otay River at...... 22-23

Sawpit Creek near Monrovia , Calif......13,112

Sawtelle-Westwood Channel near Culver

City, Calif...................... 13

Scotia, Calif., Eel River at........... 540

Scott River near Fort Jones, Calif..... 567

Seepage investigation, of Antelope

Creek, Calif..................... 500

Big Chico Creek, Calif............... 504

Lindo Channel of................... 504

Cache Creek, Calif................... 505

Clear Creek, Calif................... 497

Cottonwood Creek, Calif.............. 498

Deer Creek, Calif.................... 503

Elder Creek, Calif. .................. 501

Mill Creek, Calif.................... 500

Pine Creek, Calif.................... 503

Red Bank Creek, Calif................ 499

Thomes Creek, Calif.................. 502

Seiad Valley, Calif., Klamath River

near............................. 568

Sepulveda Dam, Calif., Los Angeles

River at......................... 103

Sespe Creek, near Fillmore, Calif.....132-133

near Sespe Hot Springs, Calif........ 13

near Wheeler Springs, Calif.......... 131

Shasta Lake, Calif., McCloud River

above. ........................... 389

near Redding, Calif.................. 390

Squaw Creek above .................... 384

Shasta River near Yreka, Calif......... 566

Shaver Lake near Big Creek, Calif...... 273

Sierra Madre, Calif., Little Santa

Anita Creek near................. 114

Santa Anita Creek near............... 113

Sierra Madre Wash at Sierra Madre,

Calif............................ 13

Silver Creek, Calif., North Fork

Stanislaus River below........... 325

Silver Creek, at Union Valley, Calif... 472 

near Placerville, Calif. ............. 474

South Fork, near Ice House, Calif.... 473

Silver Lake Outlet near Klrkwood,

Calif............................ 465

Sisquoc, Calif., La Brea Creek

near............................. 176

Sisquoc River near................... 175

Tepusquet Creek near................. 177

Sisquoc River, near Gary, Calif........ 178

near Sisquoc, Calif.................. 175
600 INDEX

Sloat, Calif., Middle Fork Feather

River below..................... 416

Smartville, Calif., Deer Creek near... 446 

Smith River, near Crescent City,

Calif...................... ..... 580

South Fork, near Crescent .City,

Calif........................... 579

Smith River basin, Calif., gagingstation records In.............579-581

Soledad, Calif., Arroyo Seco near..... 193

Solvang, Calif., Santa Ynez River at.. 157 

Somerset, Calif., Camp Creek near..... 366

Somesbar, Calif., Klamath River at.... 570

Salmon River at..................... 569

Sonoma Creek at Boyes Hot Springs,

Calif........................... 509

Soquel Creek at Soquel, Calif......... 202

South Honcut Creek near Bangor, Calif. 434 

South San Joaquin Canal near Knights

Ferry, Calif..................... 334

South Yuba River near Cisco, Calif.... 441

Southern California Edison Co.'s

canal below powerplant No. 2.... 49 

Southern California Edison Co.'s

conduit near Claremont, Calif... 80 

Spanish Creek above Blackhawk Creek

at Keddie, Calif................ 428

Spicer Meadows Reservoir, Calif.,

Highland Creek below............ 326

Sprague River, near Beatty, Oreg...... 554

near Chiloquin, Oreg................ 555

Spreckels, Calif., Salinas River

near............................ 194

Springville, Calif., North Fork of

Middle Fork Tule River near..... 235 

Squaw Creek above Shasta Lake, Calif.. 384 

Stage-discharge relation, definition

of.............................. 2

Stanford University, Calif., San

Francisquito Creek at........... 207

Stanislaus River, at Ripon, Calif..... 336

below Melones powerhouse, Calif..... 333

Clark Fork, near Dardanelle, Calif.. 322 

Middle Fork, at Hells Half Acre

Bridge, Calif................... 323

at Kennedy Meadows, Calif......... 321

at Sand Bar Flat, near Avery,

Calif........................... 324

North Fork, below Silver Creek,

Calif........................... 325

near Avery, Calif................. 327

South Fork, at Strawberry, Calif.... 328

near Long Barn, Calif............. 331

Stevens Creek near Cupertino, Calif... 209 

Stevinson, Calif., Merced River

near............................ 300

Stony Creek, at Black Butte Dam site,

near Orland, Calif.............. 406

near Hamilton City, Calif........... 407

Strawberry, Calif., Philadelphia

Canal near...................... 329

South Fork Stanislaus River at...... 328

Success, Calif., South Fork Tule

River near...................... 238

Sunland, Calif., Tujunga Creek near... 106 

Sur River at Big Sur, Calif........... 181

Surf, Calif., Santa Ynez River near... 169 

Sutherland Dam, Calif., Santa Ysabel

Creek at........................ 29

Sutherland Reservoir, Calif.,

contents of..................... 29

Sweetwater Dam, Calif., Sweetwater

River at........................ 25

Sweetwater Reservoir, Calif., monthly

contents of..................... 25

Sweetwater River, at Loveland Dam,

near Alpine, Calif.............. 24

at Sweetwater Dam Calif............. 25

Sweetwater River basin, Calif.,

gaging-station records in....... 24-25

Sycamore Canyon Channel at Glendale,

Calif........................... 13

Sycamore Creek above Pine Flat Reservoir, Calif..................... 250

Tamarack Creek, Calif., Pitman Creek

below........................... 271

Temecula, Calif., Murrieta Creek at... 39 

Santa Margarita River near.......... 40

Temecula Creek at Vail Dam, Calif..... 38

Temescal Creek near Corona, Calif..... 78

Page 

Templeton, Calif., Jack Creek near..... 186

Tenaya Creek near Yosemite, Calif.....292-293

Tennant, Calif., Antelope Creek near... 551 

Tepusquet Creek near Sisquoc, Calif.... 177

Terms and abbreviations, definition of. 2 

Thomas Creek near Lakeview, Oreg....... 13

Thomes Creek, at Paskenta, Calif....... 403

seepage investigation of............. 502

Thompson Creek near Claremont, Calif... 14 

Thompson Creek spreading ground intake

near Claremont, Calif............ 14

Three Rivers, Calif., Kaweah River

near............................. 242

Tia Juana River, near Dulzura, Calif... 20 

near Nestor, Calif................... 21

Tia Juana River basin, Calif., gagingstation records in............... 16-21

Tiger Creek powerhouse conduit below

Salt Springs Dam, Calif.......... 351

Timber Creek near San Bemardino,

Calif............................ 14

Topanga Creek near Topanga Beach,

Calif............................ 123

Toro Creek near Pozo, Calif............ 183

Town Creek near San Bernardino,

Calif............................ 14

Trabuco Creek near San Juan Capistrano,

Calif............................ 45

Tracy, Calif., Delta-Mendota Canal

near............................. 349

Tres Pinos Creek near Tres Pinos,

Calif ............ .............. 199

Trinity River]'at'Lewiston, Calif '.'.'... .15,571

near Hoopa, Calif.................... 574

South Fork near Salyer, Calif........ 573

Tujunga, Calif., Haines Creek near..... 107

Tujunga Creek, below Hansen Dam,

Calif............................ 108

below Mill Creek, near Colby Ranch,

Calif............................ 105

near Sunland, Calif.................. 106

Tujunga Wash,at Studio City, Calif..... 14

central branch, at North Hollywood,

Calif............................ 14

Tulare Lake in Kings County, Calif..... 234

Tulare Lake basin, Calif., gagingstation records in.............. 234-254

Tule River, at Worth Bridge, near

Porterville, Calif............... 239

near Porterville, Calif.............236-237

North Fork of Middle Fork, near

Springville, Calif............... 235

South Fork, near Success, Calif....... 238

Tuolumne Canal near Long Barn, Calif... 330 

Tuolumne River, above La Orange Dam,

near La Grange, Calif............ 315

at Modesto, Calif.................... 320

near Hetch Hetchy, Calif............. 306

South Fork, near Oakland Recreation

Camp, Calif.....................310-311

Turlock Canal near La Orange, Calif...317-318 

Twin Creek near Del Rosa, Calif........ 14

Twin Lakes Outlet near Kirkwood, Calif. 466

Ukiah, Calif., East Fork Russian River

near............................. 516

Russian River near................... 514

Union Valley, Calif., Silver Creek at.. 472 

Upland, Calif., Cucamonga Creek near... 74 

Upper Klamath Lake near Klamath Falls,

Oreg............................. 559

Uvas Creek near Morgan Hill, Calif..... 197

Vail Dam, Calir., Temecula Creek at.... 38 

Vail Lake, Calif., monthly contents of. 38 

Valley Springs, Calif., Cosgrove Creek

near............................. 346

Van Duzen River, near Dinsmores,

Calif............................ 541

near Bridgeville, Calif.............. 542

Ventucopa, Calif., Cuyama River near... 171 

Ventura, Calif., Coyote Creek near..... 140

Ventura River near..................141-142

Ventura River near Ventura, Calif.....141-142

Ventura River basin, Calif., gaging

station records In..............135-142

Verdugo storm drain at Olendale,

Calif............................ 14

Vernalis, Calif., San Joaquin River

near............................. 337

Verona, Calif., Sacramento River at.... 454
INDEX 601

Villa Park, Calif., Santiago Creek Page 

near............................ 83,84

Villa Park storm drain at Villa

Park, Calif..................... 14

Vina, Calif., Deer Creek near......... 404

Virginia Ranch, Calif., Dry Creek at.. 448

WSP, definition of.................... 2

Walnut Avenue storm drain near

Orange, Calif................... 14

Walnut Creek, Calif., San Ramon Creek

at.............................. 220

Walnut Creek at..................... 221

Walnut Creek (Pacheco Creek basin)

at Walnut Creek, Calif.......... 221

Walnut Creek (San Gabriel River basin)

at Baldwin Park, Calif.......... 14

Ward tunnel, at intake, Calif......... 259

at outlet, Calif.................... 268

Warm Creek, near Colton, Calif........ 67-68

near San Bernardino, Calif.......... 14

Waterman Canyon Creek near Arrowhead

Springs, Calif.................. 59

Weber Creek near Salmon Falls, Calif.. 478 

West Anaheim storm drain at Anahelm,

Calif........................... 14

West Point, Calif., Middle Pork

Mokelumne River at.............. 355

Salt Springs Reservoir near......... 350

South Fork Mokelumne River near..... 356

Wheatland, Calif., Bear River near.... 451

Dry Creek near...................... 452

Wheeler Springs, Calif., Sespe Creek

near.................:.......... 131

White Hall, Calif., Alder Creek near.470-471 

Whittier, Calif., San Jose Creek near. 96 

Whittier Narrows Dam, Calif.,

Mission Creek below............. 119

Rio Hondo above..................... 116

San Gabriel River above............. 95

Page 

Wildwood Creek near Yucaipa, Calif..... 14

Wilkins Slough, Calif., Sacramento

River below...................... 411

Williamson River, below Sprague River,

near Chlloquln, Oreg............. 556

near Klamath Agency, Oreg............ 553

Willow Creek, at mouth, near Auberry,

Calif............................ 277

North Fork, near Bass Lake, Calif.... 276

Willow Creek School, Calif., San Benito

River near....................... 198

Wilson Creek near Yucaipa, Calif....... 14

Winters, Calif., Putah Creek near...... 495

Woodbrldge, Calif., Mokelumne River at. 363 

Woodbridge Canal at.................. 362

Woodbridge Canal at Woodbridge, Calif.. 362 

Woodland, Calif., Yolo bypass near..... 493

Woods Creek near Jacksonville, Calif... 313 

Work, division of...................... 1-2

scope of............................. 1

Yager Creek near Carlotta, Calif....... 543

Yankee Hill, Calif., West Branch

Feather River near............... 432

Yolo, Calif., Cache Creek at........... 492

Yolo bypass near Woodland, Calif....... 493

Yorba Linda, Calif., Carbon Creek near. 102 

Yosemite, Calif., Merced River near...291-294

Tenaya Creek near...................292-293

Ysidora, Calif., O'Neill ditch near.... 42

Santa Margarita River at............. 42

Yreka, Calif., Shasta River near....... 566

Yuba River, at Englebright Dam, Calif.. 445

at Marysville, Calif................. 449

Yucaipa, Calif., Mill Creek near....... 50-51

Yucaipa Creek tributary near Yucaipa,

Calif............................ 14

Zanja Cota Creek near Santa Ynez, 

Calif....................... 155

U. S. GOVERNMENT PRINTING OFFICE : 1959 O - 493801