Surface Water Supply 

of the United States 

1951

Part 9. Colorado River Basin

Prepared under the direction of C. G. PAULSEN, Chief Hydraulic Engineer 

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1213

Prepared in cooperation with the States 

of Arizona, Colorado, New Mexico, 

Utah, and Wyoming, and other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1953
UNITED STATES DEPARTMENT OF THE INTERIOR 

Douglas McKay, Secretary

GEOLOGICAL SURVEY 

W. E. Wrather, Director

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

Washington, 25 D. G. - Price $1.50 (paper cover)
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Arizona, Colorado, New Mexico, Utah, and 

Wyoming, and other agencies, by personnel of the Water Resources 

Division under the direction of:

C. G. Paulsen.___________________________.Chief Hydraulic Engineer

J. V. B. Wells-___.____-___-_-___...Chief, Surface Water Branch

B. J. Peterson_________________-______Chief, Annual Reports Section

District Engineers (Surface Water)

F. M. Bell__..__..___...____._.__________....-....--Denver, Colo.

J. H. Gardiner. _____________________________ ___--_---Tucson, Ariz.

Berkeley Johnson__________-___________-____-_---Santa Fe, N. Mex.

M. T. Wilson_-______.___________________-Salt Lake City, Utah

CONTENTS

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

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

Division of work..................................................................... 2

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

New downstream order of listing gaging stations...................................... 3

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................................................................ 12

Gaging-station records............................................................... 13

Colorado River near Grand Lake, Colo............................................... 13

Little Columbine Creek basin:

Little Columbine Creek above Shadow Mountain Reservoir, at Grand lake, Colo...... 14

Grand Lake Outlet basin:

North Inlet (head of Grand Lake Outlet) at Grand Lake, Colo...................... 15

Grand Lake: 

Alva B. Adams tunnel at East Portal, near Estes Park, Colo..................... 16

East Inlet near Grand Lake, Colo............................................... 17

Shadow Mountain Reservoir near Grand Lake, Colo.................................... 18

Colorado River below Shadow Mountain Reservoir, Colo............................... 19

Columbine Creek basin:

Columbine Creek above Granby Reservoir, near Grand Lake, Colo.................... 20

Arapaho Creek basin:

Arapaho Creek at Monarch 'Lake Outlet, Colo....................................... 21

Stillwater Creek basin:

Stiilwater Creek above Granby Reservoir, near Grand Lake, Colo................... 22

Granby Reservoir near Granby, Colo................................................. 23

Colorado River below Granby Reservoir, Colo........................................ 24

Colorado River near Granby, Colo................................................... 25

Willow Creek basin:

Willow creek near Granby, Colo................................................... 26

Fraser River basin:

Fraser Kiver near Winter Park, Colo................ ............................. 27

Vasquez Creek near Winter Park, Colo........................................... 28

St. Louis Creek near Fraser, Colo.............................................. 29

Ranch Creek near Fraser, Colo.................................................. 30

Ranch Creek near Tabernash, Colo............................................... 31

Meadow Creek near Tabernash, Colo............................................ 32

Fraser River at Granby, Colo..................................................... 33

Colorado River at Hot Sulphur Springs, Colo........................................ 34

Williams River basin:

Williams Kiver near Leal, Colo................................................... 35

Keyser Creek near Leal, Colo................................................... 36

Williams River near Paraha11, Colo............................................... 37

Williams Fork Reservoir near Parshall, Colo...................................... 38

Williams River below Williams Fork Reservoir, Colo............................... 39

Troublesome Creek basin:

Troublesome Creek near Troublesome, Colo......................................... 40

Blue River basin:

Blue River at Dillon, Colo....................................................... 41

Snake River at Dillon, Colo.................................................... 42

Tenmile Creek at Dillon, Colo.................................................. 43

Straight Creek near Dillon, Colo............................................... 44

Willow Creek near Dillon, Colo................................................. 45

Rock Creek near Diljon, Colo................................................... 46

Boulder Creek near Dillon, Colo................................................ 47

Slate Creek near Dillon, Colo.................................................. 48

Blue River above Green Mountain .Reservoir, Colo.................................. 49

Black Creek above Green Mountain Reservoir, Colo. .............................. 50

Otter Creek above Green Mountain Reservoir, Colo............................... 51

Cataract Creek above Green Mountain Reservoir, Colo............................ 52

Elliott Creek feeder canal to Green Mountain Reservoir, Colo................... 53

Green Mountain Reservoir near Kremmling, Colo.................................... 54

Blue River below Green Mountain Reservoir, Colo.................................. 55

Piney River basin:

e ine y Kiver below Piney Lake, near Minturn, Colo............................... 56

Piney River near State Bridge, Colo.............................................. 57

Eagle River basin:

Eagle River at' Hedcliff, Colo.................................................... 58

Turkey Creek at Redcliff, Colo................................................. 59

Homestake Creek at Gold Park, Colo............................................. 60

Homestake Creek near Redcliff, -Colo............................................ 61

Gore Creek at upper station, near Minturn, Colo................................ 62

Black Gore Creek near Minturn, Colo........................................... 63

Gore Creek near Minturn, Colo.................................................. 64

Brush Creek near Eagle, Colo................................................... 65

Gypsum Creek near Gypsum, Colo................................................. 66
'/I CONTENTS

Raging-station records Continued. 

Colorado River Continued.

Eagle River basin Continued. Page 

Eagle River below Gypsum, Colo.................................................. 67

Colorado River near Dotsero, Colo................................................. 68

Colorado River at Glenwood Springs, Colo.......................................... 69

Roaring Fork basin:

Hearing Fork at Aspen, Colo..................................................... 70

Hunter Creek near Aspen, Colo. ................................................ 71

Fryingpan Creek at Norrie, Colo............................................... 72

Lime Creek at Troutville, Colo.............................................. 73

Lime Creek at Thomasville, Colo............................................. 74

Crystal River near Redstone, Colo............................................. 75

Thompson Creek near Carbondale, Colo........................................ 76

Cattle Creek near Carbondale, Colo............................................ 77

Roaring Fork at Glenwood Springs, Colo.......................................... 78

Parachute Creek basin:

Parachute Creek near Grand Valley, Colo......................................... 79

Parachute Creek at Grand Valley, Colo........................................... 80

Colorado River near Cameo, Colo................................................... 81

Plateau Creek basin:

Plateau Creek at upper station, near Collbran, Colo............................. 82

Plateau Creek near Collbran, Colo............................................... 83

Buzzard Creek near Collbran, Colo............................................. 84

Big Creek:

East Fork Big Creek near Collbran, Colo..................................... 85

Big Creek at upper station, near Collbran, Colo............................... 86

Cottonwood Creek at upper station, near Molina, Colo.......................... 87

Bull Creek at upper station, near Molina, Colo................................ 88

Mesa Creek near Mesa, Colo.................................................... 89

Plateau Creek near Cameo, Colo.................................................. 90

Gunnison River basin:

Tayior Kiver (head of Gunnison River):

Taylor Park Reservoir at Tayior Park, Colo...................................... 91

Tayior River below Tayior Park Reservoir, Colo.................................. 92

Tayior River at Almont, Colo.................................................... 93

East River near Crested Butte, Colo........................................... 94

Slate River near Crested Butte, Colo........................................ 95

Cement Creek near Crested Butte, Colo....................................... 96

East River at Almont, Colo.................................................... 97

Gunnison River near Gunnison, Colo.............................................. 98

Tomichi Creek at Sargents, Colo............................................... 99

Tomichi Creek at Parlin, Colo................................................. 100

Gunnison River at lola, Colo.................................................... 102

Cebolla Creek near Lake City, Colo............................................ 104

........................................... 105

Curecanti Creek near Sapinero, Colo........................................... 108

Cimarron Creek below Squaw Creek, at Cimarron, Colo........................... 109

Crystal Creek near Maher, Colo................................................ 110

Gunnison River below Gunnison tunnel, Colo...................................... 112

Smith Pork near Crawford, Colo................................................ 113

Iron Creek near Crawford, Colo.............................................. 114

East Muddy Creek (head of North Pork Gunnison River) near Bardine, Colo....... 115

Muddy Creek at Bardine, Colo.................................................. 116

North Pork Gunnison River near Somerset, Colo................................. 117

Leroux Creek near Cedaredge, Colo........................................... 118

Currant Creek near Cedaredge, Colo............................................ 119

Surface Creek near Cedaredge, Colo............................................ 120

Surface Creek at Cedaredge, Colo.............................................. 121

Surface Creek at Eckert, Colo................................................. 122

Tongue Creek:

Ward Creek below Kiser Creek, near Cedaredge, Colo. ....................... 123

Uncompahgre River:

Red Mountain Creek near Ironton, Colo....................................... 124

Dallas Creek:

East Fork Dallas Creek near Ridgway, Colo................................. 125

Uncompahgre River at Colona, Colo............................................. 126

Uncompahgre River at Delta, Colo.............................................. 127

Roubideau Creek at mouth, near Delta, Colo.................................... 128

Kahnah Creek near Whitewater, Colo............................................ 129

Gunnison River near Grand Junction, Colo. ....................................... 130

Colorado River near Colorado-Utah State line...................................... 131

Dolores River basin: 

Dolores River:

West Fork Dolores River near Dunton, Colo..................................... 132

Dolores River at Dolores, Colo.................................................. 133

Dolores River near McPhee, Colo................................................. 134

La Sal Creek: 

Twomile Creek near La Sal, Utah............................................. 135

West Paradox Creek:

Buckeye Reservoir Outlet near Paradox, Colo................................. 136

West Paradox Creek near Paradox, Colo......................................... 137
CONTENTS VII

Ciaging-station records--Continued. 

Colorado River Continued.

Dolores River basin Continued. Page

West Paradox Creek near Bedrock, Colo.......................................... 138

San Miguel River:

Fall Creek near Fall Creek, Colo............................................ 139

San Miguel R3 ver near Placerville, Colo....................................... 140

Beaver Creek near Norwood, Colo............................................. 141

Horsefly Creek near Sams, Colo.............................................. 142

Cottonwood Creek near Nucla, Colo........................................... 143

Naturita Creek near Norwood, Colo........................................... 144

San Miguel River at Naturita, Colo............................................ 145

Tabeguache Creek near Nucla, Colo........................................... 146

Taylor Creek (head of Roc Creek) near Gateway, Colo........................... 147

Deep Creek near Paradox, Colo............................................... 148

Geyser Creek near Paradox, Colo............................................. 148

Roc Creek near Uranium, Colo. ................................................. 149

Dolores River at Gateway, Colo.................................................. 150

Dolores River near Cisco, Utah.................................................. 151

Colorado River near Cisco, Utah................................................... 152

Tributaries between Dolores River and Green River:

Hock Creek near Moab, Utah...................................................... 153

Castle Creek above diversions, near Moab, Utah.................................. 154

Castle Creek near Moab, Utah.................................................... 155

Mill Creek near Moab, Utah...................................................... 156

Indian Creek near Monticello, Utah.............................................. 158

Indian Creek above Cottonwood Creek, near Monticello, Utah...................... 159

Green River basin:

Green Kiver at Warren Bridge, near Daniel, Wyo.................................. 160

Beaver Creek near Daniel, Wyo................................................. 161

Horse Creek near Daniel, Wyo.................................................. 162

Cottonwood Creek near Daniel, Wyo............................................. 163

New Fork River below New Fork Lake, near Cora, Wyo............................ 164

Pine Creek at Pinedale, Wyo................................................. 165

Pole Creek below Little Half Moon Lake, near Pinedale, Wyo.................. 166

Fall Creek near Pinedale, Wyo............................................. 167

New Fork River near Boulder, Wyo.............................................. 168

Boulder Creek below Boulder Lake, near Boulder, Wyo......................... 169

East Fork near Big Sandy, Wyo............................................... 170

Silver Creek near Big Sandy, Wyo.......................................... 171

North Piney Creek near Mason, Wyo............................................. 172

Middle Piney Creek below South Fork, near Big Piney, Wyo...................... 173

La Barge Creek near La Barge Meadows ranger station, Wyo...................... 174

Green River near Fontenelle, Wyo .............................................. ^ . 175

Fontenelle Creek near Fontenelle, Wyo......................................... 176

Big Sandy Creek at Leckie Ranch, near Big Sandy, Wyo.......................... 177

Little Sandy Creek near Elkhorn, Wyo........................................ 178

Green River near Green River, Wyo............................................... 179

Blacks Fork near Millburne, Wyo............................................... 180

Blacks Fork near Urie, Wyo.................................................... 181

East Fork of Smith Fork near Robertson, Wyo................................. 182

West Fork of Smith Pork near Robertson, Wyo............................... 183

Smith Fork at Mountainview, Wyo............................................. 184

Blacks Fork near Lyman, Wyo................................................... 185

Hams Fork near Frontier, Wyo................................................ 186

Blacks Fork near Green River, Wyo............................................. 187

Green River near Linwood, Utah.................................................. 188

Henrys Fork near Lonetree, Wyo................................................ 189

Middle Fork Beaver Creek near Lonetree, Wyo................................. 190

East Fork Beaver Creek near Lonetree, Wyo................................. 191

West Fork Beaver Creek near Lonetree, Wyo................................. 192

Henrys Fork near Burnt forte, Wyo............................................... 193

Burnt Fork near Burntfork, Wyo.............................................. 194

Henrys Fork at Linwood, Utah.................................................. 195

Sheep Creek:

Sheep Creek upper canal near Manila, Utah................................... 196

Sheep Creek lower canal near Manila, Utah................................... 197

Sheep Creek near Manila, Utah................................................. 198

Sheep Creek at mouth, near Manila, Utah....................................... 199

Carter Creek near Manila, Utah................................................ 200

Carter Creek at mouth, near Manila, Utah...................................... 201

Green River near Greendale, Utah................................................ 202

Yampa River at Steamboat Springs, Colo........................................ 203

Elk River at Clark, Colo.................................................... 204

Yampa River near Maybell, Colo................................................ 205

Little Snake River near Slater, Colo........................................ 206

Battle Creek near Slater, Colo............................................ 207

Slater Fork near Slater, Colo............................................. 208

Savery Creek near Savery, Wyo. ........'.................................... 209

Little Snake River near Dixon, Wyo.......................................... 210

Little Snake River near Lily, Colo.......................................... 211

Green River near Jensen, Utah................................................... 212

Brush Creek above cave, near Vernal, Utah..................................... 213

Brush Creek near Vernal, Utah................................................. 214
VIII CONTENTS

Gaging-station records--Continued. 

Colorado River Continued. 

Green River basin--Continued.

Brush Creek Continued. Page

Little Brush Creek below East Park Reservoir, near Vernal, Utah............. 215

Little Brush Creek near Vernal, Utah........................................ 216

Brush Creek near Jensen, Utah................................................. 217

Ashley Creek below Trout Creek, near Vernal, Utah............................. 218

South Fork Ashley Creek near Vernal, Utah................................... 219

» Oaks Park Canal near Vernal, Utah........................................... 220

Ashley Creek near Vernal, Utah................................................ 221

Dry Fork above sinks, near Dry Fork, Utah................................... 222

North Fork of Dry Fork near Dry Fork, Utah................................ 223

East Fork of Dry Fork near Dry Fork, Utah................................. 224

East Fork of Dry Fort at mouth, near Dry Fork, Utah....................... 225

Ashley Creek at Sigh of the Maine, near Vernal, Utah.......................... 226

Ashley Creek near Jensen, Utah................................................ 227

Duchesne River at Provo River Trail, near Hanna, Utah......................... 228

Hades Creek near Hanna, Utah................................................ 229

Duchesne River near Hanna, Utah............................................... 230

West Fork Duchesne River below Dry Hollow, near Hanna, Utah................. 231

West Fork Duchesne River near Hanna, Utah................................... 232

Wolf Creek above Rhodes Canyon, near Hanna, Utah.......................... 233

Duchesne River near Tabiona, Utah............................................. 234

Rock Creek near Hanna, Utah................................................. 235

Rock Creek near Mountain Home, Utah......................................... 236

Duchesne River at Duchesne, Utah.............................................. 237

Strawberry Reservoir (head of Strawberry River) near Soldier Springs, Utah.. 238

Strawberry River near Soldier Springs, Utah................................. 239

Currant Creek below Red Ledge Hollow, near Fruitland, Utah................ 240

Water Hollow near Fruitland, Utah....................................... 241

Currant Creek near Pruitland, Utah........................................ 242

Strawberry River at Duchesne, Utah.......................................... 243

Lake Fork above Moon Lake, near Mountain Home, Utah......................... 244

Brown Duck Creek near Mountain Home, Utah................................. 245

Moon Lake Reservoir near Mountain Home, Utah................................ 246

Lake Fork below Moon Lake, near Mountain Home, Utah......................... 247

Yellowstone Creek below Swift Creek, near Altonah, Utah................... 248

Yellowstone Creek near Altonah, Utah...................................... 249

Lake Fork near Upalco, Utah................................................. 250

Duchesne River at Myton, Utah................................................. 251

Uinta River below Gilbert Creek, near Neola, Utah........................... 252

Uinta River above Clover Creek, near Neola, Utah............................ 253

Clover Creek near Neola, Utah............................................. 254

Uinta River near Neola, Utah................................................ 255

Farm Creek near Whiterocks, Utah.......................................... 256

Whiterocks River above Paradise Creek, near Whiterocks, Utah.............. 257

Paradise Creek near Whiterocks, Utah.................................... 258

Whiterocks River near Whiterocks, Utah.................................... 259

Deep Creek near Lapoint, Utah............................................. 260

Dry Gulch near Neola, Utah................................................ 261

Uinta River at Fort Duchesne, Utah.......................................... 262

Duchesne River near Randlett, Utah............................................ 263

Green River near Ouray, Utah.................................................... 264

White River near Meeker, Colo................................................. 265

White River near Watson, Utah................................................. 266

Willow Creek above diversions, near Ouray, Utah............................... 267

Willow Creek near Ouray, Utah................................................. 268

Minnie Maud Creek near Myton, Utah............................................ 269

Minnie Maud Creek at Nutter Ranch, near Myton, Utah........................... 270

Price River:

Gooseberry Creek near Scofield, Utah........................................ 271

Price River above Scofield Reservoir, near Scofield, Utah..................... 272

Scofield Reservoir near Scofield, Utah........................................ 273

Price River near Scofield, Utah............................................... 274

White River near Soldier Summit, Utah....................................... 275

Price River near Heiner, Utah................................................. 276

Price River near Wellington, Utah............................................. 277

Price River at Woodside, Utah................................................. 279

Green River at Green River, Utah................................................ 280

Browns Wash near Green River, Utah............................................ 281

Huntington Creek (head of San Rafael River) near Huntington, Utah............. 282

Cottonwood Creek near Orangeville, Utah..................................... 283

Cottonwood Creek near Castle Dale, Utah..................................... 284

Ferron Creek (upper station) near Ferron, Utah.............................. 285

Ferron Creek near Castle Dale, Utah......................................... 286

San Rafael River near Castle Dale, Utah....................................... 287

San Rafael River near Green River, Utah....................................... 288

Dirty Devil River basin:

J'remont Kiver (head of Dirty Devil River) near Fremont, Utah.................... 289
CONTENTS IX

Gaging-station records Continued. 

Colorado River--Continued

Dirty Devil River basin Continued. Page 

Fremont River near Blcknell, Utah............................................... 290

Muddy Creek:

Ivie Creek above diversions, near Emery, Utah............................... 291

Colorado River at Kite, Utah...................................................... 292

Escalante River basin: 

North GreelT: 

Birch Creek near Escalante.................................................... 293

Pine Creek near Escalante, Utah............................................... 294

Escalante River near Escalante, Utah............................................ 295

Boulder Creek: 

Deer Creek:

East Fork Deer Creek near Boulder, Utah................................... 296

Boulder Creek near Boulder, Utah.............................................. 297

San Juan River basin:

San Juan River near Pagosa Springs, Colo........................................ 298

West Fork San Juan River above Borns Lake, near Pagosa Springs, Colo.......... 299

West Fork San Juan River near Pagosa Springs, Colo............................ 300

San Juan River at Pagosa Springs, Colo.......................................... 301

Rio Blanco near Pagosa Springs, Colo.......................................... 302

Rito Blanco near Pagosa Springs, Colo....................................... 303

Navajo River at Banded Peak Ranch, near Chromo, Colo.......................... 304

Little Navajo River at Chromo, Colo......................................... 305

Navajo River at Edith, Colo................................................... 306

Piedra River at Bridge ranger station, near Pagosa Springs, Colo.............. 307

Piedra River near Piedra, Colo................................................ 308

San Juan River at Rosa, N. Mex.................................................. 309

Los Pinos River below Snowslide Canyon, near Weminuche Pass, Colo............. 310

Vallecito Reservoir near Bayfield, Colo....................................... 311

Los Pinos River near Bayfield, Colo........................................... 312

Los Pinos River at Ignacio, Colo.............................................. 313

Los Pinos River at La Boca, Colo.............................................. 314

Spring Creek at La Boca, Colo............................................... 315

Citizens ditch near Turley, N. Mex............................................ 316

San Ji }n River near- Blanco, N. Mex.............................................. 317

Animas River at Howardsville, Colo............................................ 318

Anlmas River above Tacoma, Colo............................................... 319

Hermosa Creek near Hermoaa, Colo............................................ 320

Animas River at Durango, Colo................................................. 321

Florida River near Durango, Colo............................................ 322

Animas River near Cedar Hill, N. Mex.......................................... 323

Animas River at Farmington, N. Mex............................................ 324

San Juan River at Farmington, N. Mex............................................ 325

La Plata River at Hesperus, Colo.............................................. 326

La Plata River at Colorado-New Mexico State line.............................. 327

La Plata River near Farmington, N. Mex........................................ 328

San Juan River at Ship Rock, N. Mex............................................. 329

West Mancos River near Mancos, Colo........................................... 330

East Mancos River near Mancos, Colo......................................... 331

Middle Mancos River near Mancos, Colo..................................... 332

Mancos River near Towaoc, Colo................................................ 333

McElmo Creek near Cortez, Colo................................................ 334

McElmo Creek near Colorado-Utah Sta te line.................................... 335

San Juan River near Bluff, Utah................................................. 336

Colorado River at Lees Ferry, Ariz. ................................................ 337

Paria River basin: 

Paria River: 

Henrieville Creek near Henrieville, Utah...................................... 338

Paria River at Lees Ferry, Ariz................................................. 339

Transmountain diversions from Colorado River basin above Lee Ferry................ 340

Little Colorado River basin:

Little Colorado River above Lyman Reservoir, near St. Johns, Ariz............... 343

Lyman Reservoir near St. Johns, Ariz............................................ 344

Lyman Canal below Lyman Reservoir, near St. Johns, Ariz....................... 345

Little Colorado River below Lyrnan Reservoir, near St. Johns, Ariz............... 346

Little Colorado River above Zuni River, near Hunt, Ariz......................... 347

Little Colorado River near Hunt, Ariz........................................... 348

Show Low Creek at Show Low, Ariz............................................ 350

Silver Creek near Snowflake, Ariz............................................. 351

Silver Creek near Woodruff, Ariz.............................................. 352

Little Colorado River at Woodruff, Ariz......................................... 353

Little Colorado River at Holbrook, Ariz......................................... 354

Chevelon Fork below Wildcat Canyon, near Winslow, Ariz........................ 355

Chevelon Fork near Winslow, Ariz.............................................. 356

Clear Creek below Willow Creek, near Winslow, Ariz............................ 357

Clear Creek near Winslow, Ariz................................................ 358

Little Colorado River at Grand Falls, Ariz...................................... 359

Moenkopi Wash near Tuba, Ariz................................................. 360

Little Colorado River near Cameron, Ariz........................................ 361
CONTENTS

Gaglng-station records Continued. Page

Colorado River near Grand Canyon, Aris............................................ 362

Bright Angel Creek basin:

Bright Angel Creek near Grand Canyon, Ariz...................................... 363

Virgin River basin: 

Virgin River:

North Fork Virgin River near Springdale, Utah................................. 364

Virgin River at Virgin, Utah.................................................... 365

Santa Clara River near Central, Utah.......................................... 366

Santa Clara River above Winsor Dam, near Santa Clara, Utah.................... 367

Santa Clara River at St. George, Utah......................................... 368

Virgin River at Littlefield, Ariz............................................... 369

Muddy River:

Meadow Valley Wash near Caliente, Nev........................................ 370

Muddy River near Overton, Nev................................................. 371

Lake Mead at Hoover Dam, Ariz.-Nev................................................ 372

Colorado River below Hoover Dam, Aris.-Nev........................................ 373

Lake Mohave at Davis Dam, Ariz.-Nev,.............................................. 374

Colorado River below Davis Dam, Ariz.-Nev......................................... 375

Colorado River at Needles, Calif.................................................. 376

Colorado River near Topock, Ariz.................................................. 377

Bill Willams River basin: 

BUT WilliamsTTverl 

Santa Maria River near Alamo, Aris............................................ 379

Bill Williams River near Alamo, ArLz............................................ 380

Bill Williams River at Planet, Ar iz............................................. 381

Havasu Lake near Parker Dam, Aris.-Calif.......................................... 382

Colorado River below Parker Dam, Ariz.-Calif............. ........................ 384

Diversions between Parker Dam and Imperial Dam:

Diversions for Colorado River Indian Reservation near Parker, Ariz.............. 385

Palo Verda Canal near Blythe, Calif ............................................. 386

Colorado River at Imperial Dam, Aris.-Calif....................................... 389

Gila River basin:

GTTa River near Gila, N. Mex.................................................... 390

Gila River near Cliff, N. Mex................................................... 391

Gila River near Red Rock, N. Mex................................................ 392

Gila River below Blue Creek, near Virden, N. Mex................................ 395

Sunset Canal near Virden N. Mex............................................... 396

Sunset Canal above New Mexico-Arizona State line, near Virden, N. Mex......... 397

Sunset Canal wasteway near Virden, N. Mex.................................... 398

Gila River at Virden Bridge, near Duncan, Ariz.................................. 399

Moddle Canal near- Virden, N. Mex.............................................. 400

Moddle Canal at New Mexico-Arizona State line, near Virden, N. Mex............ 401

Diversions from Gila River in Duncan Valley, N. Mex.-Ariz..................... 402

Gila River near Clifton, Ariz................................................... 403

San Francisco River near Glenwocd, N. Mex..................................... 404

San Francisco River at Clifton, Ariz.......................................... 407

Eagle Creek:

Willow Creek diversion from Black River, near Morenci, Ariz................. 408

Willow Creek near Point of Pines, near Morenci, Ariz........................ 409

Willow Creek near Double Circle Ranch, near Morenci, Ariz................... 411

Eagle Creek near Double Circle Ranch, near Morenci, Aris...................... 412

Eagle Creek above pumping plant, near Morenci, Ariz........................... 413

Gila River at head of Safford Valley, near Solomon, Ariz........................ 414

Diversions from Gila River in Safford Valley, Ariz............................ 415

San Simon Creek near Solomon, Aris............................................ 416

Gila River at Calva, Ariz....................................................... 41?

San Carlos River near Peridot, Aris........................................... 418

San Carlos Reservoir at Coolidge Dam, Aris...................................... 419

Gila River below Coolidge Dam, Aris............................................. 420

Gila River at Winkelman, Ariz................................................... 421

San Pedro River at Palominas, Ariz............................................ 422

San Pedro River at Charleston. Ariz........................................... 423

San Pedro River near Redington, Ariz.......................................... 425

Gila River at Kelvin, Ariz...................................................... 426

Gila River at Ashurst-Hayden Dam, near Florence, Ariz........................... 427

^ueen Creek at Whitlow dam site, near Superior, Airz.......................... 428

Gila River near Lateen, Ariz.................................................... 429

Santa Cruz River near Lochiel, Aris........................................... 430

Santa Crus River near Nogales, Aris........................................... 431

Sonoita Creek near Patagonia, Ariz.......................................... 433

Santa Cruz Hiver at Tucson, Ariz.............................................. 434

Tucson Arroyo at Vine Avenue, Tucson, Ariz.................................. 435

Rillito Creek:

Sabino Creek near Mount Lemmon, Ariz...................................... 436

Sabino Creek near Tucson, Ariz............................................ 437

Rillito Creek near Tucson, Ariz............................................. 438

Santa Cruz River at Cortaro, Ariz............................................. 439

Santa Cruz River near Laveen, Ariz............................................ 440

Black River (head of Salt River) near Fort Apache, Ariz ... ................... 441

White River near McNary, Ariz............................................... 442
CONTENTS XI

Gaging-station records--Continued. 

Colorado River Continued. 

Gila River basin Continued.

Black River Continued. Page

White River at White River, Ariz. ............................................ 443

East Fork White River at Fort Apache, Ariz................................ 444

White River at Fort Apache, Ariz............................................ 445

Carrizo Creek near Show Low, Ariz........................................... 447

Salt River near Chrysotile, Ariz.............................................. 448

Salt River near Roosevelt, Ariz............................................... 449

Tonto Creek above Gun Creek, near Roosevelt, Ariz........................... 450

Reservoir system on Salt River at and below Roosevelt Dam, Ariz............... 451

Salt River below Stewart Mountain Dam, Ariz................................... 452

Verde River near Clarkdale, Ariz. ........................................... 453

Oak Creek near Cornville, Ariz............................................ 454

Verde River at Camp Verde, Ariz............................................. 455

Beaver Creek at Camp Verde, Ariz.......................................... 459

Verde River at Childs, 'near Camp Verde, Ariz................................ 460

Verde River below Tangle Creek, above Horseshoe Dam, Ariz................... 461

Reservoir system on Verde River at and below Horseshoe Dam, Ariz............ 462

Verde River below Bartlett Dam, Ariz........................................ 463

Agua Fria River near Mayer, Ariz.............................................. 465

Agua Fria River at Lake Pleasant Dam, Ariz.................................... 466

Lake Pleasant at Lake Pleasant Dam, Ariz......................... 4............ 468

Hassayampa River at Box dam site, near Wickenburg, Ariz....................... 469

Gila River below Gillespie Dam, Ariz............................................ 470

Gila River near Dome, Ariz...................................................... 472

Colorado River at Yuma, Ariz...................................................... 473

Colorado River at international boundary above Morelos Dam, near Andrade, Calif... 474 

Diversions and return flows at and below Imperial Dam:

Uila Gravity Main Canal at Imperial Dam, Ariz.-Calif............................ 475

Ail-American Canal near Imperial Dam, Ariz.-Calif............................... 476

Yuma Main Canal at siphon-drop power plant, near Yuma, Ariz................... 477

Yuma Main canal wasteway at Yuma, Ariz...................................... 478

Yuma Main Canal below Colorado River siphon, at Yuma, Ariz.................... 479

All-American Canal above Pilot Knob Wasteway, Calif............................. 480

Pilot Knob wasteway near Pilot Knob, Calif.................................... 481

North Gila Valley Canal at Laguna Dam, Ariz.-Calif.............................. 482

Return surface flows from Yuma project, Ariz.-Calif............................. 483

Sulphur Spring Valley: 

Whitewater Draw basin:

Whitewater Draw near Douglas, Ariz.............................................. 485

Miscellaneous discharge measurements................................................ 486

Index............................................................................... 491

ILLUSTRATIONS

Page 

Gaging-station structures: A, Colorado River at Lees Ferry, Ariz.; B,

Crystal River near Redstone, Colo.................................7... 4

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

on surface water supply............................................... 9

Comparison of discharge at three key gaging stations during 1951 water

year with median discharge for 25-year period......................... 12

SURFACE WATER SUPPLY OP THE COLORADO RIVER BASIN, 1951

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, 1951. 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 12,400 gaging stations in the 48 States and at many others in the Territories of Alaska and Hawaii. On September 30, 1951, the Geological Survey and cooperating 

organizations were maintaining 6,730 gaging stations, including those in Alaska and Hawaii. 

Miscellaneous discharge measurements were made at many other points in the 1951 water year.

COOPERATION

Many State, municipal, and private organizations have cooperated with the Geological 

Survey in this work by either furnishing or helping to collect data. Organizations that 

(supplied data are acknowledged in station descriptions, and organizations that assisted in 

the collection of data through cooperative agreements with the Survey are:

Arizona: State Land Department, W. W. Lane, commissioner; Salt River Valley 

Water Users' Association; Metropolitan Water District of Southern California (for 

certain stations on Colorado River at and in vicinity of Parker Dam); San Carlos 

Irrigation and Drainage District; Maricopa County Municipal Water Conservation 

District No. 1; Gila Valley Irrigation District; and city of Tucson.

California: Imperial Irrigation District and Palo Verde Irrigation District. 

Colorado: Office of the State Engineer, M. C. Hinderlider, and the State 

Water Conservation Board, C. H. Stone, director.

New Mexico: Office of the State Engineer, J. H. Bliss; New Mexico Interstate 

Stream Commission, J. H. Bliss, secretary; State Highway Department, B. G. Dwyre, 

State Highway engineer.

Nevada: Office of the State Engineer, A. M. Smith, succeeded by H. A. Shamberger. 

Utah: Office of the State Engineer, J. M. Tracy; and Utah Water & Power Board, 

W. R. Wallace, chairman.

Wyoming: Office of the State Engineer, L. C. Bishop, and the State Planning 

and Water Conservation Board, L. C. Bishop, secretary.

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 six gaging stations in 

Arizona.

Assistance was also furnished by the Bureau of Reclamation, United States Department of 

the Interior.

The following organizations aided in collecting records:

Arizona: National Park Service of the United States Department of the Interior. 

Colorado: Denver Board of Water Commissioners, Bureau of Reclamation of the 

United States Department of the Interior, and Uncompahgre Valley Water Users' 

Association.

Utah: Moon Lake Water Users' Association.

Wyoming: Bureau of Reclamation of the United States Department of the Interior.

1
2 SURFACE WATER SUPPLY, 1951, PART 9

DIVISION OF WORK

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

Carl G. Paulsen, chief hydraulic engineer, and Joseph V. B. Wells, chief of the surface 

water branch. The data for stations in the several States were collected and prepared for 

publication under the supervision of the district engineers at the offices listed below. 

The records were reviewed and the manuscript prepared for publication under the direction 

of B. J. Peterson, chief, Annual Reports Section.

State District office Address

Arizona a/.................... Tucson......................... 210 Post Office Building.

CalifornTa.................... Tucson, Ariz................... 210 Post Office Building.

Colorado b/................... Denver......................... Federal Center.

New Mexico c/................. Santa Fe....................... 224 Federal Courthouse.

Nevada.....7.................. Salt Lake City, Utah........... 300 Federal Building.

Utah d/....................... Salt Lake City................. 300 Federal Building.

Wyoming....................... Denver, Colo................... Federal Center.

W a/ Including Gila River below Blue Creek, near Virden, N. Mex. Exo ------ B/ Except for Los Pinos River at Ignacio and at La Boca, and Spring Creek at La Boca, but Including 

Green River near Linwood, Utah, Twomlle Creek near La Sal, Utah, Sheep Creek near Manila, Utah, and 

White River near Watson, Utah. The work in Colorado was done in collaboration with M. C. Hinderlider, 

State engineer, and L. T. Burgess, State chief hydrographer.

o/ Except for Gila River below Blue Creek, near Virden, but including Los Pinos River at Ignaolo 

and at La Boca, Colo.', and Spring Creek at La Boca, Colo.

d/ Except for Green River near Linwood, Twomile Creek near La Sal, Sheep Creek near Manila, and 

White River near Watson.

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 

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

Cubic feet per second per square mile (ci'sm) 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 watsr 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 stage-discharge 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.
EXPLANATION OF DATA 3

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.

NEW 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 has been 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, 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 new 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 is used to supplement base data in determining the 

daily 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 

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

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

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

tables gives the daily 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 daily 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
SURFACE WATER SUPPLY, 1951, PART 9

A. COLORADO RIVER AT LEES FERRY, ARIZ. 

Note landing lower.

B. Crystal River Near Redstone, Colo. 

FIGURE 1. GAGING-STATION STRUCTURES.
EXPLANATION OP DATA 5

the gage heighfs 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 of 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 

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 

stage-discharge 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.

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 "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 of gages, locations, and datums of previous gages for which discharge records are 

generally equivalent to those at the present site. 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). 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 cr&st. 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."

256684 O - 53 - 2
6 SURFACE WATER SUPPLY, 1951, PART 9

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 followed 

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

number, 'W means water-supply paper. In listing the water years only one number is 

g3ven; 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: "(H)" 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.

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 values for the maximum day and the minimum day for 

each month are underlined. If the value 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 values; 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"). Values for cubic feet per second per
ACCURACY OF FIELD DATA AND COMPUTED RESULTS 7

square mile and runoff, in inches, are omitted if the drainage area includes large noncontributing 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 values 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 

most stations are listed below the table of daily 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 daily 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 daily contents or stage is given. A skeleton table of capacity at given 

stages is usually given in the first report in which data for the reservoir are published, 

but it is omitted from succeeding reports.

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 daily 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 daily 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, values 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.
SURFACE WATER SUPPLY, 1951, PART 9

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.

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 basinj 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; W = Water-Supply Paper)

Report

10th A, pt. 

llth A, pt.

B 131...... 

16th A, pt. 

B 140......

Z 

Z

"z

Character of data

Descriptive Information only. 

Monthly discharge and descriptive Information. ..............

Descriptions, measurements, gage heights, and ratings. ...... 

Descriptive Information only. 

Descriptions, measurements, gage heights, ratings, and 

monthly discharge.

Year

1884 to September 1890.

1884-92.

1893-94. 

1895.
PUBLICATIONS
10 SURFACE WATER SUPPLY, 1951, PART 9

Streamflow data for the years 1884-1901, In reports of the Geological Survey Continued 

(A Annual Reports; B « Bulletin; W - Water-Supply Paper)

Report

W 11.........

18th A, pt. 4

19th A, pt. 4

W 28.........

20th A, pt. 4

W 25 to 39...

W 47 to 52. . . 

22d A, pt. 4.

W 65, 66. .... 

W 75.........

Character of data

Descriptions, measurements, ratings, and monthly discharge..

of the Mississippi River, and Missouri River and tributaries above Kansas River.

of the Mississippi River, except Missouri River and tributaries above Kansas River. 

Descriptions, measurements, ratings, and monthly discharge.

the Mississippi River, and Missouri River and tributaries.

the Mississippi River, except Missouri River and tributaries.

Descriptions, measurements, gage heights, and ratings. ......

Descriptions, measurements, gage heights, and ratings. ......

Descriptions, measurements, gage heights, and ratings. ...... 

Monthly discharge. ..........................................

Year

1895-96.

1897.

1898.

1898.

1899.

1900.

1901. 

1901.

Reports on surface-water supply containing records from 1899 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

Year

1902.. ......

1907-8..

1912....... .

W.S.P.

a37, 38 

50 

66, 75 

85 

100 

133 

175, b!77 

211, b213 

249 

269 

289 

309 

329

Coloi

Year

1919-20. . ...

1923. .......

1926. .......

?ado River basin, 1899-191

W.S.P.

359 

389 

409 

439 

459 

479 

509 

529 

549 

569 

589 

609 

629

Year

1929

1939. .......

51 

W.S.P.

649 

669 

689 

704 

719 

734 

749 

764 

789 

809 

829 

859 

879

Year M.S.P.

899

929

959

979

1009

1039

1059

1089

1119

1149

1179

1213

a Green and Gunnlson Rivers and Colorado River above Gunnlson River, 

b Below mouth of Glla River.

The records at most of the stations discussed in these reports extend over many years. 

Miscellaneous measurements at many points other than regular gaging stations have been 

made each year and are published under "Miscellaneous discharge measurements" 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-Supply Paper 

879 for the Colorado River basin) 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 Colorado River basin.
RECORDS OP DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

Reports containing compilations of records of discharge by States and drainage basins

Water -Supply 

Paper

74

395

617

616

916

1045

Period

1884-1900

1888-1914

1897-1927

1894-1926

1691-1938

1868-1938

Report

Water resources of Colorado.

Colorado River (Ariz., Colo., N. Hex., Utah, Wyo.) and its utilization.

Upper Colorado River (Colo., Utah) and its utilization.

Green River (Colo., Utah, Wyo.) and its utilization.

Surface waters at base stations in Colorado River basin (Ariz., Calif

Colo., Utah, Wyo.).

Surface waters at stations on tributaries in lower Colorado River bas

(Ariz., Calif., Nev., N. Hex.. Utah).

.,

in

Records of discharge have been published also in State reports. Some of tnese 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

Colorado. .....

Do. ........

New Mexico ....

Utah. .........

Do .........

Period

1861-1935

1881-1938

1388-1925

1889-1905

1910-16

Report

Water resources of Colorado, Appendix 2,

Data on stream-gaging stations of

Colorado, a/

Water resources of Colorado, Appendix 5,

vols. 1 and 2, Stream-flow data of

Colorado.

Surface water supply of New Mexico......

10th biennial report ....................

Issued by

State Planning Commission,

Conservation Board, State

Engineer .

Do.

Office of the State Enginee

Do .

Do.

Water

r .

a_/ Contains records of yearly discharge only.

Note.--In addition to the records contained in the reports listed above, the States of Colorado, 

New Mexicc, and Wyoming have issued annual or biennial reports in which are contained records of 

discharge.

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 in 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 list gives the 

numbers and titles of these reports:

Title Water-Supply

Faper 

147.......... Destructive floods in the United States in 1904.

162......... Destructive floods in the United States in 1905.

771......... Floods in the United States, magnitude and frequency.

847......... Maximum discharges at stream-measurement stations through September 1938.

967-A....... Floods of September 1939 in Colorado River basin below Boulder (Hoover)

Dam. 

994......... Cloudburst floods in Utah, 1850 to 1938.

997......... Floods in Colorado.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The Western Colorado Power Co. continued, during the water year October 1950 to September 1951, to collect records of daily discharge for Cascade Creek near Tacoma, Colo., 

which now cover the years 1915-51. The records for the years 1934-40 are published in the 

surface water-supply papers of the Geological Survey covering the Colorado River basin 

for those years, and the records for the entire period are on file at the Office of the 

State Engineer of Colorado.
12 SURFACE WATER SUPPLY, 1951, PART 9

HYDHOLOGIC CONDITIONS

The water year 1951 was characterized by drought conditions over all of the lower Colorado River basin. In the upper basin, streamflow ranged from near normal in the northern 

part to drought conditions in the southern part. At many gaging stations in the lower 

basin, the annual discharge was the lowest during the period of record. There were no 

noteworthy floods in the area during the year. For three key stations in the area covered 

by this report, a comparison of monthly and annual mean discharges during the 1951 water 

year with the median discharge for the 25-year period 1921-45 is shown in figure 3 below.

! 15,000

Green River at Green River, Utah 

Drainage area, 40,600 sq mi.

5000

San Juan River at Farmington, N. Mex 

Drainage area, 6,580 sq mi.

7000

6000

5000

4000

3000

2000

1000

0

600

500

400

300

200

100

0 - _____________________________________________________ . 

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. The

Explanation year 

Median of monthly mean discharge for 25-year period 1921-45. 

Monthly mean discharge during water year 1951.

Figure 3.--Comparison of discharge at three key gaging stations during 1951 water year 

with median discharge for 25-year period.

Gila River at head of Safford Valley, near Solomon, Ariz. 

Drainage area, 7,950 sq mi.
GAGING-STATION RECORDS 13

COLORADO RIVER MAIN STEM

Colorado River near Grand Lake, Colo.

Location. Lat 40°14', long. 105°51', in sec. 13, T. 3 N., R. 76 W., on left bank 200 ft

downstream from bridge on U. S. Highway 34, a quarter of a mile upstream from high-water

line on Shadow Mountain Reservoir, and 3 miles southwest of town of Grand Lake. 

Drainage area. 103 sq mi. 

Hecords available. July 1904 to September 1909, September 1910 to September 1918, May 1934

to aeptemoer 1951. Published as North Pork Grand River near Grand Lake 1904-9, 1910-18. 

Gage. Water-stage recorder. Altitude of gage is 8,380 ft (from topographic map). Prior

fo June 15, 1934, staff gage at same site and datum. June 15, 1934, to Sept. 26, 1944,

water-stage recorder at site 1,100 ft downstream at different datum. 

Average discharge. 30 years, 105 cfs. 

jatrentes. Maximum discharge during year, 689 cfs June 20 (gage height, 5.68 ft); minimum

daily, 12 cfs Feb. 1.

1904-9, 1910-18, 1934-51: Maximum discharge observed, 1,840 cfs June 15, 16, 1918

(gage height, 7.0 ft); minimum, 1.6 cfs July 17, 1934 (gage height, 1.32 ft, site and

datum then in use). 

Remarks. Records good except those for periods of ice effect or no gage-height record,

wnicn are fair. Diversions above station for irrigation of about 200 acres of hay

meadows above station. Transmountain diversion by Grand River ditch through La Poudre

Pass to Cache la Poudre River basin (see p. 340). 

Revisions. W 1039: Drainage area. Revised figure's of discharge, in cubic feet pa- second for

period in water year 1914 are given herewith. They supersede those published in WaterSupply Papers 389, 617, and 879.

July 17........... 200 July 18........... 185

Month

Water year 1913-14. .... 

Calendar year 1914. ....

Maximum

1,700 

1,700

Minimum Mean

182 

180

Runoff in 

acre -feet

132,000 

130,600

Rating table, water year 1950-51, except periods of lee effect 

(gage height, In feet, and discharge, in cubic feet per second)

3.2 

3.4

3.6 

4.0

4.5

5.0 

5.7

190

355

700

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

.2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

35

42

TT

39

35

32

*32

30

32

32

31

30

28

28

27

27

28

27

25

. 25

25

24

22

22

23

23

22

21

21

21

2£

870

28.1

1,730

Nov.

 2T 20

23

22

22

29

27

30

*bW

b23

b24

b24

24

23

22

b21

22

22

22

23

b25

b26

b23

b22

b22

b22

b22

b22

b22

22

-

701

23.4

1,390

Dec.

21 b20"

b!9

20

b!6

b!3

bl£

19

19

b!9

b!9

b!9

*b!9

b!9

19

*19

b!9

b!8

b!8

18

b!8

b!7

b!6

b!6

b!6

b!6

b!6

16

16

16

16

548

17.7

1,090

Jan.

17

b!5

17

17

il

15

13

TJ

15

*16

16

17

17

17

17

17

17

16

16

16

15

15

16

16

16

17

17

16

16

15

14

496

16.0

984

Feb.

12

TJ

15

17

ii

18

 18

18

18

18

18

17

17

16

16

17

18

18

18

17

17

17

17

17

17

17

17

17

_

-

474

16.9

940

Mar.

17

16 T6"

16

16

16

16

17

17

18

18

b!8

18

18

*18

18

b!6

16

17

17

18

bTS- 20

b!7

b!7

b!7

18

blB

b!8

b!8

18.

537

17.3

1,070

Apr.

b!8 bTS"

b!8

18

18

18

*20

20

b20

20

b!9

b!9

b!9

20

22

b24

b29

35

39

42

50

52

57

70

81

90

93

111

120

ToTT

-

1,288

42.9

2,550

May

86

74

68SB"

113

177

199

205

169

153

*162

202

196

182

169

226

241

247

280

308

387

347

391

460

404

367

404

515

623

T&

618

8,665

280

17,190

June

650

575

460

347

294

256

262

259

232

232

229 m

256

256

323

*422

510

585

*612

662

650

606

485

408

404

450

465

422

363

347

-

12,263

409

24,320

July

351

rss

339

343

339

259

277

268

214

174

149

128

115

104

92

*95

96

101

75

66

87

87

54

41

36

28 2F

44

54

32

32

4,451

144

8,830

Aug.

81

103

146

33?

115

100

96

111

93

81

75

69

62

57

*49

38

TS

38

46

66

12S

90

72

63

62-

57

80

46

49

75

62

2,360

76.1

4,680

Sept.

46

4T

38

35

36

35

32

*32

38

39

39

42

42

41

38

36

33

32

39

40

41

42

38

34

32

30

28

27

TO

33

-

1,089

36.3

2,160

Calendar year 1950 : Max 368 Mln 3.8 Mean 53.4 Ac-ft 38,650

Water year 1950-51 : Max 662 Mln 12 Mean 92.4 Ac-ft 66,930

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

Note.. No gage-height record Jan. 5 to Mar. 

charge measurements and weather records.

5, Mar. 18-20; discharge estimated on basis of 2 dls-
14 LITTLE COLUMBINE CREEK BASIN

Little Columbine Creek above Shadow Mountain Reservoir, at Grand Lake, Colo.

Location. Lat 40°15, long. 105°50', in sec, 6, T. 3 N., R. 75 W., on left bank 300 ft 

east of U. S. Highway 34, a quarter of a mile upstream from Shadow Mountain Reservoir, 

and three-quarters of a mile west of town of Grand Lake.

Records available. April 1950 to September 1951.

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 8,380 ft (from topographic map). Prior to Oct. 28, 1950, at datum 0.56 ft lower.

Extremes.--Maximum discharge during year, 11 cfs May 5 (gage height, 1.38 ft), from rating 

curve extended above 7 cfs; minimum recorded, 1.1 cfs Nov. 11 (gage height, 0.31 ft).

1950-51: Maximum discharge, that of May 5, 1951; minimum recorded, 0.9 cfs Sept. 8, 

1950 (gage height, 0.28 ft, present datum).

Remarks.--Records fair. No diversion above station.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second} 

(Shifting-control method used Oct. 1-Z6)

0.4 1.8

.5 3.0

.7 6.2

Oct. Z8 to Sept. 30

0.3 1.0

.7 4.2

1.1 8.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.7

4.7

4.5

4.2

4.4

4.8

*4.4

4.7

4.7

4.5

4.8

4.4

4.2

4.4

4.2

4.4

4.0

4.0

4.0

4.0

3.4

3.4

3.3

3.0

2.5

2.5

2.4

2.3

2.3

2.5

Z__.\

117.7

3.80

233

Nov.

2.3

3.1

2.7

2.7

2.9

3.3

3.1

3.1

2.0

*1.3

1.1

*1.2

1.9

1.5

1.6

1.6

1.5

1.6

2.9

3.2

3.5

3.4

3.0

2.8

2.7

3.1

3.6

37?

3.1

3.0

-

76.0

2.53

151

Dec.

3.1

(*)

2.7

84.1

2.71

167

Jan.

(*)

' 2.0

62.0

2.0

123

Feb.

(*)

1.7

_

_

-

47.6

1.7

94

Mar.

(*)

2.0

62.0

2.0

123

Apr.

1.9 ;LI

1.9

1.9

1.9

2.0

*2.0

2.0

2.1

2.1

2.2

2.3

Z.3

2.3

2.4

2.7

3.4

*4.1

4.2

4.3

4.2

4.0

4.6

4.7

5.6

4.9

5.0

5.8

5.7

4.9

99.2

3.31

197

May

5.4

5.2

5.9

7.0

7.2

7.0

6.6

5.4

6.0

6.5

*6.3

6.7

6.5

6.7

6.0

6.7

6.2

6.5

6.3

6.0

6.0

6.2

5.8

6.2

5.8

6.3

6.5

6.2

6.2

5.8

5.9

193.0

6.23

383

June

6.2

6.2

6.5

6.9

675

5.6

5.5

5.4

5.6

5.6

5.6

5.5

5.4

5.4

*5.6

5.9

6.0

6.6

*6.7

6.7

6.7

5.8

6.0

5.7

4.9

5.2

5.6

4.9

4.8

573

174.0

5.80

345

July

4.9

5.1

5.3

5.3

5.6

5.6

5.1

4.9

5.1

5.4

5.1

5.3

*5.0

5.0

4.8

5.3

5.6

*5.6

5.5

5.4

5.7

574

5.2

5.2

5.0

4.9

4.9

5.2

5.2

5.1

5.1

161.8

5.Z2

321

Aug.

5.2

5.3

5.6

5.6

5.5

5.1

4.9

3.1

3.2

3.7

3.8

4.3

4.6

4.5

*4.5

3.8

3.1

3.1

3.6

4.4

4.9

5.7

5.4

4.8

4.3

3.2

2.4

373

4.9

5.6

5.3

136.7

4.41

271

Sept.

4.6

473

4.1

3.9

4.1

3.7

3.2

*3.0

2.7

3.1

2.2

2.2

2.5

2.4

2.3

2.1

2.0

1.9

273

2.3

3.1

3.8

3.5

3.7

3.8

2.3

2.6

3.1

4.3

3.9

93.0

3.10

184

Calendar year 1950: Max - Mln - Mean - Ao-ft -

Water year 1950-51: Max 7.2 Mln 1.1 Mean 3.58 Ao-ft 2,590

Peak discharge (base. 10 efs').--May 5 (3:30 p.m.) 11 cfs (1.38 ft.).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 27, Dec. 2 to Apr. 17 (stage-discharge relation affected by ice 

during most of period); discharge estimated on basia of 6 discharge measurements, weather records, 

and records for stations on nearby streams.
GRAND LAKE OUTLET BASIN 15

North Inlet at Grand Lake, Colo.

Location. Lat 40°15', long. 105°49', in NE£ sec. 5, T. 3 N., R. 75 W., on right bank 300 

rt downstream from Tonahutu Creek and 1,600 ft upstream from Grand Lake.

Drainage area.--46.6 sq mi.

Records available. August 1905 to August 1912 (fragmentary), October 1947 to September 

1351.

Gage. Water-stage recorder. Datum of gage is 8,434.48 ft above mean sea level (Bureau of 

Reclamation bench mark). Aug. 3, 1905, to Aug. 13, 1912, staff gage at site 1,300 ft 

downstream at different datum.

Extremes.--Maximum discharge during year, 824 cfs June 18 (gage height, 5.71 ft); minimum 

 daily, 2.6 cfs Feb. 2.

1905-9, 1910-12, 1947-51: Maximum discharge, 960 cfs June 18, 1949 (gage height,

6.18 ft), from rating curve extended above 650 cfs; minimum daily, 1.5 cfs Feb. 5, 6,

1949.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are fair. Transmountain diversion by Eureka ditch (see p. 340).

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge. In cubic feet per second)

3.5 

4.5

34

2.5

3.0 

4.0 

5.0 

5.8

140

315

585

860

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

18

IF

13

16

14

*11

12

12

11

10

TO

10

10

10

10

10

10

10

10

10

10

11

11

13

13

13

13

14

15

15

379

12.2

752

Nov.

15

16

IT

14

13

14

14

13

10

8.0

9.0

9.0

*9.2

9.6

9.6

8.2

8.8

9.2

9.6

9.2

9.4

9.2

9.8

8.2

8.2

8.6

8.6

8.6

8.6

8.6

-

310.2

10.3

615

Dec.

8.2 T7S7.0

7.0

7.2

5.0 5TB6.0

6.4

6.4

6.4

6.8

6.6

*6.6

6.6

6.4

6.0

5.8

5.8

5.8

5.6

5.4

5.2

5.4

5.2

5.4

5.6

5.6

5.6

5.6

5.6

189.4

6.11

376

Jan.

5.4

5T

.4

.4

.1

.8

.0

.2

.4

* .8

.6

.6

.8

.8

.8

.0

.0

.8

.7

.4

.0

.4

.4

.4

.4

4.4

4.2

4.2

4.2

3.8

3^.4

142.2

4.59

282

Feb.

2.8

2.6

S7T

2.7

2.8

. 2.9

*3.1

3.4

3.6

3.8

3.8

3.6

3.5

3.6

3.8

4.0

or

3.7

3.6

3.6

3.6

3.6

3.7

3.7

3.7

3.7

3.6

3.7

_

_

-

96.9

3.46

192

Mar.

3.7

37?

.8

.8

.9

.O

.0

.2

.2

.2

.2

.2

.1

.2

* .3

.3

.2

.2

.3

.3

.3

.3

.2

.2

.3

.4

.4 -.4

.5

.5

.7

130.1

4.20

258

Apr.

4.7

4.5

4.4 4T5-

4.9

4.9

*4.9

5.0

5.2

5.6

5.4

5.4

5.7

6.0

6.4

6.0

6.6

7.4

8.8

9.0

9.2

9.4

9.8

13

16

20

18

22

53- 24

-

279.7

9.32

555

May

20

17

TT

20

32

55

69

79

70

68

*72

93

104

92

88

130

162

180

183

199

206

220

289

289

245

247

320

442

462 3EE385

5,240

169

10,390

June

360

269

211

170

151

159

186

*204

183

189

186

183

189

211

*279

398

477

687

*S5"5

642

636

516

368

352

440

480

458

432

378

370

-

10,423

347

20,670

July

355

330

350

370 355"

322

340

307

266

234

211

229

*211

197

184

184

183

184

178

191

216

184

147

133

120

110 TTO135

189

151

133

6,819

220

13,530

Aug.

117

109

TTB- 127

112

98

87

78

65

56

51

47

44

42

*39

36

33

32

31

40

53

49

44

39

36

33

30

3T

32

56

52

1,816

58.6

3,600

Sept.

42

3T

29

27

24

23

22

*22

20

19

18

20

20

19

19

20

20

18

21

20

24

24

16

14

14

13

TT

13

16

18

-

622

20.7

1,230

Calendar year 195O : Max 506 Mln 4.6 Mean 47,9 Ac-ft 34,650

Water year 1950-51 : Max 687 Mln 2.6 Mean 72.5 Ac-ft 52,450

Peak discharge (base, 550 efs) . May 23 (ll:3O p.m.) 350 efs (4.14 ft); May 29 (l a.m.) 642 cfs 

(5.19 ft;; June Iff (10:3O p.m.) 824 cfs (5.71 ft); June 26 (l a.m.) 585 cfs (5.OO ft); July 4 (ll 

p.m.) 483 cfs (4.66 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 4 to Apr. 11 Apr. 14-17, 20-22 (no gage-height 

record Dec. 15 to Apr. 6; discharge estimated on basis of 3 discharge measurements, weather records, 

and records for stations on nearby streams).
16 GRAND LAKE OUTLET BASIN

Alva B. Adams tunnel at East Portal, near Estes Park, Colo.

Locatlpn.--Lat 40°20', long. 105°35', in wj sec. 9, T. 4 N., R. 73 W., on left bank at 

East Portal and 4j miles southwest of Estes Park.

Records available. August 1947 to September 1951.

Gage. Water-stage recorder and Cipolletti weir. Altitude of gage is 8,250 ft (from topographic map). Prior to Oct. 1, 1950, water-stage recorder and Parshall flume at different datum.

Extremes. Maximum discharge during year, 596 cfs May 18 (gage height, 8.37 ft), discharge 

measurement; no flow for many days.

1947-51: Maximum discharge, that of May 18, 1951; no flow for many days.

Remarks.--Records good. This is a transmountain diversion from Grand Lake and Shadow 

Mountain Reservoir for power and irrigation development in Big Thompson River basin. 

Diversion point is.at West Portal near Grand Lake, 13.07 miles west of East Portal.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

40

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

40

1.29

79

Nov.

0

0

0

96

*107

.4

0

0

0

0

0

0

0

0

0

0

0

0

 0

0

0

0

0

0

0

0

0

0

0

0-

203.4

6.78

403

Dec.

0

0

0

0

0

0

74

203

120

0

0

0

0

0

0

0

0

0

70

*187

6.4

0

0

0

0

0

0

0

0

0

0

660.4

21.3

1,310

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*41

64

*35

28

0

0

61

237

144

610

19.7

1,210

Feb.

0

0

0

0

14

40

25

25

24

18

0

0

0

0

*19

*14

14

14

14

14

11

12

10

13

13

13

8.2

12

_

-

327.2

11.7

649

Mar.

12

12

12

12

6.0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

40

187

198

~T6 212

0

0

0

0

0

0

86

853.0

27.5

1,690

Apr.

209

203

208

208

198

*197

*77

58

*143

102

165

163

164

163

162

*292

308

308

308

306

299

301

305

306

299

*164

*247

438

25

0

-

6,326

211

12,550

May

192

74

352

327

269

242

290

446

372

326

377

457

481

*326

*321

*283

*495

*336

190

192

193

194

195

195

194

194

195

68

192" 23

194

8,185

264

16,230

June

194

191

189

196

211

212

214

216

215

215

215

215

215

216

217

155

26

0

0

0

0

0

0

0

0

0

76

113

0

0

-

3,501

117

6,940

July

0

0

0

0

0

0

0

0

0

0

0

9.0

51

141

79

309

313

272

237

307

308

307

248

308

348

297

25"9 404

210

210

267

4,834.0

156

9,590

Aug.

448

270

143

69

0

0

83

4.0

0

0

0

0

0

0

0

0

241

2.6

0

0

0

0

0

0

0

0

0

0

0

98

0

1,358.6

43.8

2,690

Sept.

0

0

0

0

0

0

105

0

0

0

0

0

0

0

0

0

121

124

161

133

124

123

1.4

126

121

125

113

120

1.4

0

-

1,498.8

50.0

2,970

Calendar year 1950: Max 213 Mln 0 Mean 38.8 Ac-ft 28,060

Water year 1950-51: Max 495 Mln 0 Mean 77.8 Ac-ft 56,310

Discharge measurement made on this day.
GRAND LAKE OUTLET BASIN 17

East Inlet near Grand Lake, Colo.

Location. Lat 40°14 ! , long. 105°48', in NW£ sec. 9, T. 3 N., R. 75 W., on right bank 

i.auu ft upstream from mouth and 1 mile southeast of town of Grand Lake.

Drainage area. 27.1 sq mi.

Records available. October 1947 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,380 ft (from topographic map).

Extremes. Maximum discharge during year, 573 cfs June 21 (gage height, 3.37 ft); minimum 

 daily, 2.7 cfs Feb. 1, 2, Mar. 17, 18.

1947 T 51: Maximum discharge, 710 cfs June 17, 1949 (gage height, 3.90 ft); minimum 

daily determined, 1.5 cfs Mar. 11 to Apr. 1, 1949.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. No diversion above station.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.8

.9

1.0

2.5 

5.5 

9.Z

1.1 

1.3 

1.7

2.0 

3.0 

3.4

142

430

585

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

14

15

14

13

12

*11

11

10

10

9.2

8.8

8.8

8.1

8.1

8.1

8.1

7.7

7.4

7.4

7.0

6.6

6.2

6.6

6.2

6.2

6.2

6.2

6.2

5.9

5.5

273.5

8.82

542

Nov.

5.5

5.9

5.5

6.2

6.6

6.6

6.6

7.4

b8.0

*bB.5

b8.1

b7.6

b7.4

7.7

6.2

5.2

5.5

5.2

5.5

5.5

6.6

6.6

5.9

5.5

5.2

4.6

4.6

4.6

4.3

4TS

-

183.2

6.11

363

Dec.

4.3

4.6

4.6

T75- 4.9

3.7 "470

.4

.4

.3

.5

.3

.3

* .6

.5

.3

.2

.2

.2

.1

.1

.0

.0

.1

.0

4.0

4.1

4.2

4.2

4.3

4.2

132.5

4.27

263

Jan.

JL1

4.1

4.1

4.1

3.8

3.5

3.4

3.4

3.6

*3.7

3.6

3.5

3.4

3.5

3.8

3.8

3.8

3.8

3.8

3.6

3.2

3.3

3.3

3.4

3.4

3.4

3.4

3.4

3.4

3.3

3.0

110.9

3.58

220

Feb.

2.7

7TT

2.8

2.9

3.2

3.3

*3.4

371

3.4

3.4

3.4

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

_

-

89.3

3.19

177

Mar.

3.2

3.2

775- 3.3

3.2

3.1

3.1

3.3

3.3

3.3

3.3

3.1

3.0

3.0

*3.1

3.0

2.7

777

2.8

3.0

3.0

3.1

3.0

2.9

3.0

3.0

3.0

3.1

3.1

3.1

3.2

95.5

3.08

189

Apr.

3.1

TTT

3.2

3.3

3.5

3.3

3.1

3.3

3.7

4.0

3.6

4.0

3.8

4.2

5.6

4.5

4.9

*5.2

5.5

6.6

7.7

7.7

9.2

13

13

14

13

15

18

TS

-

210.1

7.00

417

Calendar year 1950: Max 427 Mln 1.7 Mean 35.7

May

16

16

14

TT

22

35

38

43

40

36

*41

54

55

52

53

81

102

118

111

133

138

131

182

195

151

138

172

317

350

76~ff

257

3,365

108

6,670

June

236

170

127

100

95

96

111

*140

131

147

138

124

116

140

*175

290

365

525

*4"5?

477

485

402

275

239

338

426

402

*371

308

314

-

7,725

258

15,320

July

305

269

287

320

529

275

305

299

236

208

172

195

*180

160

158

158

149

154

142

156

163

147

116

100

90

82

W

120

122

107

92

5,680

183

11,270

Aug.

82

79

102

92

1-07

82

71

62

52

44

41

39

36

34

*30

28

26

25

23

28

35

32

29

27

26

24

21

20

?C

47

44

1,408

45.4

2,790

Sept.

35

29

26

21

20

18

16

*15

15

12

12

14

13

12

11

10

9.7

8.8

8.8

9.2

11

12

11

9.7

8.8

8.1

7.0

6.6

977

13

-

412.4

13.7

818

Ac-ft 25,830

Water year 1950-51 : Max 525 Mln 2.7 Mean 53.9 Ac-ft 39,040

Peak discharge (base, 200 cfs). May 23 (12 p.m.) 230 cfs (2.35 ft); May 28 (8 p.m.) 493 cfs (3.17 

ft;; June Zl (3 a.m.) 573 cfs (3.37 ft); June 26 (2:30 a.m.) 497 cfs (3.18 ft); July 5 (2:30 a.m.) 

409 cfs (2.94 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Dec. 6 to Apr. 17 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of 5 discharge measurements, weather records, and records for stations on nearby streams.
COLORADO RIVER MAIN STEM

Shadow Mountain Reservoir near Grand Lake, Colo.

Location.--Lat 40°13', long. 105°50', in SWiNWi sec. 19, T. 3 N., T. 75 W., on upstream 

face of Shadow Mountain Dam on Colorado River, 1 mile (revised) upstream from Pole 

Creek, and 3-f miles south of town of Grand Lake.

Drainage area.--190 sq mi.

Kecords available. April 1947 to September 1951.

Crage.--atari' gage. Datum of gage is mean sea level (Bureau of Reclamation bench mark).

Extremes.--Maximum contents observed during year, 17,070 acre-ft Nov. 21-23 (elevation,

 8,366.57 ft); minimum observed, 15,750 acre-ft Apr. 29 (elevation, 8,365.85 ft).

1947-51: Maximum contents computed, 17,330 acre-ft July 21, 1949; minimum computed, 

2,630 acre-ft May 14, 1948; no storage prior to April 1947.

Remarks.--Figures given herewith are combined figures of usable contents for Shadow Mountain Reservoir and Grand Lake. Shadow Mountain Reservoir is used for stabilization of 

water level in Grand Lake, to which it is connected by canal. Reservoir is formed by 

earth- and rock-fill dam and dikes. Storage began in April 1947. Total combined capacity of system, 17,860 acre-ft, which includes capacity of reservoir between elevations 8,347 ft (sill of outlet gate) and 8,367 ft (crest of spillway) and capacity of 

Grand Lake above elevation 8,365 ft. Transmountain diversion from Colorado River and 

of water pumped from Granby Reservoir is effected through Grand Lake and Alva B. Adams 

tunnel, for power and irrigation in Big Thompson River basin. Capacity of 3,660 acreft usable for diversion through Alva B. Adams tunnel between elevations 8,365 (inlet 

crest of tunnel) and 8,367 ft (crest of Shadow Mountain Reservoir spillway). Dead storage in Shadow Mountain Reservoir, 506 acre-ft. Dead storage in Grand Lake not determined .

Cooperation.--Records furnished by Bureau of Reclamation.

Revisions (water years). W 1149: 1947-48.

Capacity table (elevation, in feet, and usable contents, in acre-feet) 

(Prepared by Bureau of Reclamation from surveys and maps by that organization)

8,347.0 0

8,349.0 494

8,350.0 794

8,352.0

8,356.0

8,360.0

1,560

4,230

8,090

8,365.0

8,367.0

14,2OO 

17,860

Usable contents, in acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

16,830

16,800

16,780

16,760

16,760

16,720

16,740

16,780

16,80O

16,830

16,850

16,870

16,890

16,890

16,910

16,920

16,910

16,910

16,910

16,910

16,890

16,870

16,850

16,850

16,850

16,85O

16,850

16,830

16,830

16,800

16,780

Nov.

16,800

16,8OO

16,820

16,800

16,690

16,580

16,580

16,540

16,500

16,540

16,580

16,670

16,890

16,980

17,050

17,050

17,050

17,050

17,050

17,050

17,070

17,070

17,070

16,920

16,820

16,720

16,520

16,320

16,340

16,360

-

Dec.

16,390

16,450

16,520

16,580

16,610

16,650

16,700

16,780

16,540

16,120

15,900

15,980

16,10O

16,130

16,170

16,210

16,240

16,240

16,280

15,910

15,910

15,900

15,900

15,880

15,860

15,860

15,840

15,900

15,900

15,930

15,970

Jan.

16,010

16,040

16,060

16,06O

16,100

16,130

16,150

16,170

16,190

16,210

16,230

16,240

16,260

16,280

16,300

16,300

16,320

16,320

16,340

16,360

16,370

16,390

16,300

16,190

16,100

16,040

16,040

16,060

16,170

16,320

16,280

Feb.

16,320

16,340

16,360

16,370

16,430

16,880

16,840

16,810

16,880

16,800

16,770

16,790

16,800

16,820

16,870

16,830

16,820

16,800

16,780

16,760

16,740

16,720

16,700

16,700

16,690

16,690

16,690

16,690

_

-

-

Mar.

16,670

16,670

16,650

16,690

16,720

16,700

16,700

16,700

16,700

16,700

16,720

16,780

16,760

16,760

16,760

16,760

16,760

16,760

16,760

16,740

16,650

16,610

16,360

16,230

16,610

16,760

16,760

16,78O

16,800

16,780

16,780

Apr.

16,540

16,450

16,360

16,260

16,170

16,080

16,020

16,010

16,210

16,340

16,280

16,300

16,280

16,280

16,280

16,280

16,120

16,130

16,210

16,230

16,150

16,120

16,130

16,240

16,080

16,170

16,190

16,210

15,750

16,100

-

May

16,780

16,820

16,610

16,370

16,230

16,300

16,610

16,780

16,720

16,560

16,390

16,150

15,970

16,410

16,390

16,610

16,700

16,800

16,820

16,760

16,830

16,910

16,820

16,85O

16,720

16,700

16,760

16,850

16,740

16,670

16,670

June

16,690

16,690

16,580

16,560

16,460

16,450

16,430

16,520

16,430

16,430

16,430

16,480

16,460

16,430

16,520

16,520

16,670

16, 700

16,780

16,260

16,230

16,240

16,150

16, 100

16,13O

16,210

16,170

16,150

16,120

16,120

-

July

16,130

16,130

16, 10O

16,170

16, 1OO

16,100

16,080

16,020

16,010

16,060

16,020

15,910

15,950

15,900

15,880

15,970

16,210

16,500

16,430

16,500

16,430

16,480

16,370

16,340

16,100

16,210

16,370

16,390

16,610

16,630

16,520

Aug.

16,150

16,150

16,580

16,76O

16,720

16,700

16,630

16,690

16,700

16,700

16,720

16,700

16,670

16,690

16,650

16,670

16,210

16,26O

16,340

16,61O

16,720

16,720

16,670

16,670

16,650

16,650

16,610

16,670

16,650

16,7OO

16,720

Sept.

16,700

16,670

16,650

16,700

16,700

16, 760

16,690

16,670

16,670

16,650

16,610

16,690

16, 700

16,670

16,650

16,650

16,340

16,080

15,840

15,820

15,950

15,990

16,240

16,170

16,260

16,280

16,240

16,240

16,610

16,630

-

Monthly elevation and contents, water year October 1950 to September 1951

Date

Dec. 31. ..................

Calendar year 1950. .....

Sept. 30. ..................

Water year 1950-51. .....

Elevation 

(feet)

8,365.97

_

8,366.33

-

Contents 

(acre -feet)

15,970

_

16,630

-

Change in contents 

during month 

(acre-feet)

-390

+7,350

-550

-90

-260
COLORADO RIVER MAIN STEM 19

Colorado River below Shadow Mountain Reservoir, Colo.

Location.--Lat 40°12', long. 105°50', in SE^ sec. 19, T. 3 N., R. 75 W., on right bank 

a quarter of a mile downstream from Shadow Mountain Dam, 0.7 mile (revised) upstream 

from Pole Creek, and 3j miles south of town of Grand Lake.

Drainage area.--190 sq mi.

Records available.--October 1947 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 8,320.00 ft above mean sea level (Bureau 

of Reclamation bench mark).

Extremes.--Maximum discharge during year, 2,940 cfs May 18 (gage height, 5.18 ft), from 

rating curve extended above 2,100 cfs; minimum daily, 16 cfs Nov. 10-14.

1947-51: Maximum discharge, that of May 18, 1951; minimum daily, 11 cfs Oct. 18, 

19, 1949.

Remarks.--Records good. Flow regulated by Shadow Mountain Reservoir (see p.18). Diversions 

for irrigation of about 200 acres of hay meadows above reservoir. Transmountain diversion by Grand River and Eureka ditches (see p.340 ) and by Alva B. Adams tunnel (see 16).

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Nov. 28 to Jan. 7,

Jan. 16 to May l)

1.2 

1.4 

1.6 

2.0

14

130

2.5 

3.0 

4.0 

5.0

305

600

1,510

2,710

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

Z

3

4

5

6

7

B

9

10

11

1Z

13

14

15

16

17

18

19

30

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

84

8T

84

78

72

58

44

*42

44

44

45

45

45

45

46

46

46

46

46

45

45

44

44

42

42

41

39

38

37

33

26_

1,520

49.0

3,010

Nov.

26

26

26

25

20

19

19

18

17

16_

16

*16

16

16

27

45

45

45

46

35

55

985B98

98

98

98

44

21

21

-

1,248

41.6

2,480

Dec.

21

2T

21

20

20

20

20

20

20

20

50- 19

*20

19

19

19

19

19

20

20

20

20

20

20

20

20

20

20

20

20

20

617

19.9

1,220

Jan.

20

20

20

20

20

20

20

20

20

20

20

*20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

620

20.0

1,230

Feb.

20

ro

20

20

20

20

20

20

*20

20

20

20

21

21

21

21

21

22

22

22

22

22

22

25

27

30

34

37_

_

-

630

22.5

1,250

Mar.

42

48

54

58

63

70

74

80

84

90

94

100 -53-

28

30

*30

30

30

30

27

25

5F

25

25

25

25

25

25

25

25

25

1,390

44.8

2,760

Apr.

24

2T

24

24

24

24

23

22

*22

22

22

22

22

23

23

23

23

23

23

22

22

22

21

21

20

20

21

20

20

19

-

665

22.2

1,320

May

101

119

23

2T

23

23

24

24

24

25

25

*25

26

26

26

26

27

301

399

422

523

579

690

848

652

558

682

1,150

1,560

rrrar

1,090

11,164

360

22,140

June

1,170

938

638

494

330

315

284

lET

330

404

305

320

330

366

558

*902

1,330

1,790

2,090

T7530~

*1,890

1,S80

1,200

1,020

1,150

1,510

1,460

1,170

1,150

1,090

-

28,608

954

56,740

July

1,050

965

1,010

992

1,130

920

947

929

750

652

506

579

452

*340

360

73

18

4T

177

69

187

93

116

18

28

57

57

58

58

60

65

12,762

412

25,310

Aug.

60

60

62

184

335

271

105

186

165

165

130

147

130

119

*117

84

63

63

63

63

153

123

147

112

92

86

92

57

ITT

112

76

3,819

123

7,570

Sept.

119

TC4T

88

72

78

60

60

60

60

60

*60

60

SO

60

60

60

60

62

62

62

57

49£5"

49

49

49

49

49

49

51

-

1,867

62.2

3,700

Calendar year 1950: Max 1,180 Min 16 Mean 94.3 Ac-ft 63,280

Water year 1950-51 : Max 2,090 Min 16 Mean 178 Ac-ft 128,700

Discharge measurement made this day.
20 COLUMBINE CREEK BASIN

Columbine Creek above Granby Reservoir, near Grand Lake, Colo.

Location. Lat 40°11', long. 105°48', in sec. 29, T. 3 N., R. 75 W., on right bank a quarter 

or a mile above high-water line of Granby Reservoir and 5 miles south of town of Grand 

Lake.

Drainage area. 7.3 sq mi, approximately. 

Records available. April 1950 to September 1951.

_. Water-stage recorder and concrete control. Datum of gage is 8,282,( 

sea level (levels by Bureau of Reclamation).

ft above mean

Extremes. Maximum discharge during year, 92 cfs June 19 (gage height, 2.15 ft). 

 1550-51: Maximum discharge, 93 cfs June 16, 1950 (gage height, 2.16 ft); minimum not 

determined.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversion or regulation above station.

Rating tables, water year 1950-51, except period of Ice effect 

(gage height, In feet, and discharge. In cubic feet per second)

Oct. 1 to June 18 June 19 to Sept. 30

0.2 

.3

0.5 

1.1 

2.2 

8.6

1.1 

1.4 

1.9

0.3 

.4

.5

1.1 

2.2

3.8

0.8 11

1.3 34

1.9 71

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

1.9

2.1

5TT

2.0

1.9

1.8

1.6

*1.6

1.6

1.6

1.5

1.5

1.4

1.3

1.3

1.4

1.3

1.2

1.1

rrr

i.i.i.i.i.

i.i.i.i.i.i.

43.4

1.40

86

Nov.

1.1

1.3

TTiT

1.3

1.2

1.2

1.2

1.3

1.1

1.1

1.1

1.2

*1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

bl.2

1.2

1.1

1.0

jJL

.9

.9

.9

.9

.9

-

34.4

1.15

68

Dec.

(*)

0.7

21.7

0.7

43

Jan.

(*)

0.5

15.5

0.5

31

Feb.

0.5

_

_

-

14.0

0.5

28

Mar.

0.5

(*)

15.5

0.5

31

Apr.

0.5 ~X

.6

.6

.6

.6

.6

.7

.7

.7

.7

.8

.9

.9

1.1

1.0

1.4

*1.6

1.8

2.2

2.1

1.9

2.5

3.0

2.9

3.3

3.0

3.9

4.4 2~T

-

49.6

1.65

98

May

3.6

3.2

2.9 57S"

5.2

7.0

7.7

8.4

7.5

7.2

7.3

8.2

*9.1

8.6

9.6

13

16

17

18

21

21

22

32

33

26

30

41

60

65

5T

57

628.1

20.3

1,250

June

SI

40

31

27

26

25SB30

28

31

30

26

27

*30

33

48

56

71

BT

68

*71

60

52

52

60

67

60

57

51

50

-

1,351

45.0

2,680

July

47

IT

42

42

40

37

37

34

30

28

25

24

21

*19

18

17

16

16

14

14

14

12

11

11

9.2

8.4

7.9

7.9

7.9

7.2

7.0

667.5

21.5

1,320

Aug.

6.7

7.2

7.9

BTT

7.4

5.8

5.6

5.1

4.7

4.7

4.5

3.8

3.5

3.3

*3.2

3.0

2.7

2.5

2TT

4.0

4.2

3.5

3.0

2.8

2.8

2.7

2.5

2.5

2.8

4.9

3.2

129.9

4.19

258

Sept.

2.4

2.4

2.2

2.1

2.0

2.0

1.9

1.9

1.9

*1.8

1.8

2.1

2.1

2.0

1.9

1.9

1.8

1.6

TTS

1.8

2.8

FT

2.1

2.0

1.8

1.8

1.6

1.6

2.1

2.1

-

59.5

1.98

118

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 71 Mln - Mean 8.30 Ac-ft 6,010

Peak discharge (base, 80 cfs). May 28 (11:30 p.m.) 85 cfs (2.07 ft); June 19 (ll p.m.) 92 cfi 

(2.15 ftj; June 25 (IV p.m.; 84 ofs (2.06 ft).

* Discharge measurement.made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 11, 12, Nov. 22 to Apr. 17 (stage-discharge relation affecte 

Ice during most of period), May 10-12; discharge estimated on basis of 3 discharge measurements, 

weather records, and records for nearby stations.

d by
ARAPAHO CREEK BASIN 21

Arapaho Creek at Monarch Lake Outlet, Colo.

Location.--Lat 40°07', long. 105°45', in northeast corner of sec. 26, T. 2 N., R. 75 ¥., 

on right bank a quarter of a mile downstream from Monarch Lake Outlet and 10 miles 

east of Granby.

Drainage area. 47.1 sq mi.

Records available.--October 1944 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,310 ft (from topographic map). Staff 

gage 1 mile downstream at different datum, read twice daily, used for winter records.

Average discharge.--? years, 82.0 cfs.

Extremes. Maximum discharge during year, 1,040 cfs June 18 (gage height, 4.38 ft); minimum daily, 7.6 cfs Feb. 14, 27.

1944-51: Maximum discharge, 1,040 cfs June 18, 1949, June 18, 1951; maximum gage 

height, 4.38 ft June 18, 1951; minimum daily discharge, 4.1 cfs Dec. 4-6, 11, 1944.

Remarks. Records good. Natural regulation by Monarch Lake.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9 "0

"1

'?.

"5

H

"5

'5

 7

18

19

20

51

,22

23

24

25

26

27

28

29

50

51

' otal

'' ;an

Ac- ft

Oct.

21

Tl

21

21

20

20

19

19

*18

18

18

17

16

16

15

15

15

14

14

14

14

13-

13

13

13

12

12

12

12

12

11

489

15.8

970

Nov.

12

TT

11

11

11

11

12

12

12

11

11

*11

11

11

11

11

11

11

11

12

11

11

11

10

TO

10

10

10

10

10

328

10.9

651

Dec.

10

TO

10

10

10

10

10

10

10

10

10

12 11

10

10

*10

10

1111

10

10

10

10

10

10

10

10

10

10

10

10

315

10.2

625

Jan.

10

TO

9.7

9.7

9.7

9.7

9.4

9.7

10

10

10

*9.4

9.4

9.2

9.4

9.7

9.4

8.9

8.6

8.6

8.6

8.9

8.9

8.1

7.8

7.8

7.8

7.8

8.3

8.3

8.1

280.9

9.06

557

Feb.

8.1

8.3

8.6

8.6

8.6

8.1

7.8

8.3

*8.6

8.6

8.6

7.8

7.8

7.6

7.8

8.3

8.9

876

8.3

7.8

8.1

.8

.8

.8

.8

.8

.6

775

_

-

227.6

8.13

451

Mar.

8.1

7.8

err

8.1

7.8

7.8

8.1

8.6

8.6

9.2

8.6

9.2

8.3

7.8

7.8

8.1

8.1

8.1

*8.3

8.1

7.8

8.1

8.6

8.1

8.1

8.3

8.6

8.9

9.2

8.9

9.2

258.4

8.34

531

Apr.

8.9

972

9.4

9.4

9.2

8.9

9.2

*9.2

10

10

10

11

10

10

9.7

10

*10

11

12

14

16

19

23

27

30

35

37

41

50

59

-

538.1

17.9

1,070

May

56

48

42

15

46

73

104

119

116

102

116

136

*142

129

129

184

223

242

248

282

314

311

356

384

300

226

328

555' 540

428

460

6,758

218

13,400

June

456

332

256

126 TBO"

178

206

228

276

248

242

228

234

254

279

*432

590

755" 875

754

*754

665

468

424

500

615

615

595

528

512

-

12,828

428

25,440

July

516

500

496

516

524

468

484

492

448

428

311

332

318

284

265

242

*242

265

256

279

279

268

217

195

170

147

T53

165

173

170

162

9,761

315

19,360

Aug.

152

144

165

178

T7S

160

131

112

93

76

69

62

59

58

53

*52

48

47

45

46

52

53

52

48

47

45

41

39

4T

48

60

2,454

79.2

4,870

Sept.

60

54

47

42

40

36

34

32

31

*29

27

27

26

25

24

22

22

21

20

19

20

20

20

20

19

19

18

17

TT

17

-

825

27.5

1,640

Calendar year 1950; Max 640 Mln 5.O Mean 60.9 Ac-ft 44,070

water year 195O-51: Max 875 Mln 7.6 Mean 96.1 Ac-ft 69,550

Peak discharge (base, 650 cfs).--June 18 (9:30 p.m.) 1,040 cfs (4.38 ft); June 27 (7 a.m.) 650 cfs 

l'3.68 ft).

* Discharge measurement made on this day.

256684 O - 53 - 3
22 STILLWATER CREEK BASIN

Stillwater Creek above Granby Reservoir, near Grand Lake, Coio.

Location. Lat 40°11', long. 105°53', in sec. 27, T. 3 N., R. 76 W., on left bank a quarter 

or a mile upstream from high-water line of Granby Reservior, half a mile upstream from 

U. S. Highway 34, and 6 miles southwest-of town of Grand Lake.

Drainage area.--18.8 sq mi.

Records available. June 1950 to September 1951.

Gage.--Water-stage recorder and Parshall flume. Altitude of gage is 3,310 ft (from topographic map). Prior to Oct. 26, 1951, water-stage recorder and concrete control at same 

site at datum 0.56 ft lower.

Extremes.--Maximum discharge during year, 108 cfs June 21 (gage height, 2.15 ft), from rating curve extended above 84 cfs; maximum gage height, 2.69 ft May 28; minimum discharge 

not determined.

1950-51: Maximum discharge, that of June 21, 1951; maximum gage height, that of May 

28, 1951; discharge not detremined.

Remarks.--Records fair except those for period of no gage-height record, which are poor. 

Small diversions for irrigation of hay meadows above station.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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 

2.5

TJL

2.3

2.2

2.2

*2.0 1.'9

1.9

2.0

1.9

1.9

1.9

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.8

1.7

1.7

1.7

1.8

1.6

1.6

1.6

1.6

1.5

T75

58.0

1.87

115

Nov.

1.5 

1.7

1.6

1.6

1.6

1.6

1.7

2.1

2.1

1.7

1.4

TTf

1.7

*1.7

1.7

1.9

2.1

2.1

2.4

2.3

 273 2.8

1.9

1.9

1.7

1.7

1.8

1.7

1.7

1.7

55.4

1.85

110

Dec.

(*)

1.5

46.5

1.5

92

Jan.

(*)

1.3

40.3

1.3

80

Feb.

(*)

1.3

_

_

-

36.4

1.3

72

Mar.

(*)

1.8

55. S

1.8

111

Apr.

132.3

2.4

2.6

2.7

2.8

3.0

*3.1

3.3

3.8

4.5

5.2

6.0

6.8

7.8

9.0

11

*12

14

16

14

22

Te

18

16

15

18

19

17

277.9

9.26

551

May

15 

14

TZ

14

17

23

26

31

31

26

*27

33

36

31

24

38

49

51

52

55

57

56

57

55

52

53

56

63

74

7?

72

1,276

41.2

2,530

June

69 

59

54

50

46

46

38

34

30 36

43

43

39

*38

40

45

53

74

74

77

*84

69

61

48

49

47

44

*52

36

31

1,509

50.3

2,990

July

28 

25

26

30

28

27

"22" 37

22

32

30

28

27

26

24

25

28

*28

20

il

21

20

18

18

17

21

21

26

33

30

34

"d9

25.5

1,560

Aug.

24 2-2

20

15

12

9.0

8.0

7.7

6.8

6.3

6.0

5.3

4.7

4.3

3.8

*3.5

3.3

3.4

3.5

5.7

8.6

5.2

4.3

3.9

3.8

3.5

3.2

3.0

3.8

6.5

4.2

224.3

7.24

445

Sept.

fc*

2.5

2.2

2.1

2.1

1.9

*270~

2.1

2.2

2.1

2.3

2.3

2.2

2.1

2.1

2.1

2.1

2.3

2.4

2.8

2.5

2.3

2.1

2.1

2.0

2.0

2.1

2.5

2.6

-

67.8

2.26

134

Calendar year 195O: Max - Mln - Mean - Ac-ft

Water year 1950-51: Max 84 Mln - Mean 12.2 Ac-ft 8,790

charge (base, 50 cfs). Apr. 23 (3:30 p.m.) 50 cfs (2.16 ft); May 28 (9 p.m.) 75 cfs 

(2.69 ft); June 21 (2 a.m.) 108 cfs (2.15 ft); June 28 (2 a.m.) 76 cfs (1.66 ftj

Peak disch , . . .. .

2.69 ft); June 21 (2 a.m.) 108 cfs (2.15 ft); June 28 (2 a.m.) 76 cfs (1.66 ftjj July 7 (12 m.) 

55 cfs (1.32 ft); July 31 (2 p.m.) 52 cfs (2.19 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 11, Nov. 25 to Apr. 18 (no gage-height record 

Dec. 7 to Apr. 16j discharge estimated on basis of 5 discharge measurements, weather records, and 

records for nearby stations).
COLORADO RIVER MAIN STEM 23

Granby Reservoir near Granby, Colo.

Location.--Lat 40°09' , long. 105°52', in sec. 11, T. 2 N., R. 76 W. , at upstream face of 

Uranby Dam on Colorado River, l£ miles upstream from Walden Hollow and 5^ miles northeast of Granby.

Records available.--June 1950 to September 1951.

Gage.--Staff gage. Datum of gage is mean sea level (Bureau of Reclamation bench mark).

Extremes.--Maximum contents observed during year, 220,300 acre-ft Sept. 19 (elevation, 

a,Ml.00 ft); minimum observed, 38,260 acre-ft Apr. 28 (elevation, 8,199.04 ft). 

195C-51: Maximum contents observed, that of Sept. 19, 1951.

Remarks.--Reservoir is formed by earth-fill dam and dikes. Regulation began Sept. 13,

iy«y, and usable storage began June 14, 1950, while dam was under construction. Usable 

capacity of reservoir, 467,500 acre-ft between elevations 8,186.00 ft (trashrack sills 

at outlet structures) and 8,280.00 ft (top of radial spillway gates). Dead storage, 

77,330 acre-ft. Reservoir is used to store water for pumping to Shadow Mountain Reservoir and transmountain diversion through Alva B. Adams tunnel for power and irrigation in Big Thompson River basin. Figures given herein represent usable contents.

Cooperation. Records furnished by Bureau of Reclamation.

Capacity table (elevation, in feet, and usable contents, in acre-feet) 

(Prepared by Bureau of Reclamation from surveys and maps by that organization)

2,520

38,120

8,224.0

8,250.0

8,280.0

135,800

270,800

467,500

Usable contents, in acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

43,760

44,100

44, 100

44,270

44,270

44,440

44,610

44,610

44,610

44,610

44,610

44,610

44,610

44,610

44,610

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,940

44,940

44,940

44,940

44,940

44,940

44,940

44,940

Nov.

44,740

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,770

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

44,810

-

Dec.

45,280

46,130

46,330

46,470

46,540

46,540

46,570

46,600

46,640

46,670

46,710

46,740

46,770

46,770

46,770

46,810

46,810

46,810

46,810

46,810

46,810

46,840

46,880

46,910

46,940

46,940

46,940

46,940

46,980

47,050

47,080

Jan.

47,080

47,110

47,150

47,180

47,220

47,250

47,250

47,280

47,320

47,320

47,320

47,320

47,350

47,390

47,390

47,390

47,390

47,420

47,420

47,420

47,460

47,460

47,490

47,490

47,490

47,490

47,490

47,520

47,660

47,460

47,010

Feb.

46,910

46,880

46,910

46,910

47,050

46,600

46,570

46,600

46,570

46,600

46,600

46,640

46,770

46,810

46,810

46,810

46,810

46,810

46,810

46,810

46,840

46,840

46,840

46,840

46,880

46,910

46,910

46 , 940

_

_

-

Mar.

46,980

46,980

46,940

46,980

47,010

47,010

47,010

46,940

46,940

46,940

47,050

47,080

47,080

47,110

47,150

47,220

47,220

47,250

47,320

47,320

47 , 220

46 , 880

46 , 740

46,370

46,060

45,860

45,860

45,920

45,920

45,960

45,960

Apr.

45,960

45,650

45,280

44,980

44,640

44,370

44,070

43,800

43,530

43,290

43,260

42,960

42,620

42,320

42,020

41,820

41,360

40,860

40,400

40,100

39,870

39,570

39,180

38,780

38,680

38,320

38,490

38,260

38,320

38,580

-

May

38,550

38,620

39,040

38,850

38,650

38,490

38,450

38,620

38,810

39,180

39,470

39,800

40,200

40,100

40,500

40,730

41,290

42,020

43,230

44,770

46,500

48,480

50,550

52,850

55,660

57,820

59,650

61,850

65,570

70,240

73,700

June

77,130

80 , 830

83,830

85,880

87,300

88,450

89,570

90,650

92,090

93,420

94,960

96,270

97,490

98,760

100,200

102,000

104,800

108,900

114,400

120,300

126,000

131,500

136,400

140,000

143,000

146 , 400

150,700

154,600

158,200

161,700

-

July

167,900

170,800

173,800

176,800

180,000

182,700

185,500

188,200

190,400

192,400

194,000

195,700

197,300

198,600

199,800

200,500

200,900

201,600

202,500

203,200

204,200

204,900

205 , 700

206,000

206,400

206,400

206,100

206,600

206,900

207,400

207,900

Aug.

208,300

208,700

209,200

210,000

210,900

211,700

212,300

212,800

213,200

213,600

213,900

214,200

214,400

214,600

214,800

214,900

215,000

215,100

215,200

215,700

216,100

216,400

216,700

217,000

217,200

217,400

217,500

217,600

218,200

218,500

218,600

Sept.

218,800

219,100

219,200

219,400

219,600

219,600

219,600

219,600

219,700

219,700

219,800

219,800

219,900

219,900

220,000

220,000

220,100

220,200

220,300

220,100

220,000

219,900

219,700

219,600

219,200

219,000

218,800

218,600

218,500

218,500

-

Monthly elevation and contents, water year October 1950 to September 1951

Date

Dec. 31. ..................

Calendar year 1950. .....

Water year 1950-51. .....

Elevation 

(feet)

8,201.68

_

-

Contents 

(acre-feet)

47,080

-

-

Change in contents 

during month 

(acre-feet)

-130

+2,270

+47,070

-70

-70

-980

+35,120

+174,700
24 COLORADO RIVER MAIN STEM

Colorado River below Granby Reservoir, Colo.

Location. Lat 40°09', long. 105°52', in SE^: sec. 11, T. 2 N., R. 76 W., on right bank 

a quarter of a mile downstream from Granby Dam, 1 mile upstream from Walden Hollow, 

and 5 miles northeast of Granby.

Drainage area. 311 sq mi.

Records available. October 1950 to September 1951.

Gager Water-stage recorder and Parshall flume. Altitude of gage is 8,050 ft (from topographic map).

Extremes.--Maximum discharge during year, 73 cfs June 13 (gage height, 1.47 ft); minimum 

 daily, 18 cfs Sept. 8-11, 13-15, 30.

Remarks.--Records excellent except those for period of no gage-height record, which are 

good. Flow completely regulated by Granby Reservoir (see preceding page). Several 

diversions for irrigation of hay meadows above station. Transmountain diversions by 

Eureka and Grand River ditches (see p.340) and Alva B. Admas tunnel (see p.340).

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, in cubic feet per second)

0.6 

1.0 

1.5

17.4

39.4

75.3

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

33 

32

33

33

32

32

32

*32

32

32

32 

32

32

32

32

32

32

32

32

31

303l)

30

30

30

30

30

30

30

30

30

972

31.4

1,930

Nov.

31 

31

31

31

31

31

31

31

31

*31

31 

31

31

31

31

31

31

31

31

31

32

37

32

32

32

32

32

32

32

32

-

940

31.3

1,860

Dec.

32 

32

32

32

32

32

32

33

33

33

33 

33

33

33

*33

33

33

33

33

32

30

30

30

30

30

30

30

30

30

30

30

982

31.7

1,950

Jan.

29 

29

29

29

29

29

29

29

29

29

29

29

*29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

899

29.0

1,780

Feb.

29

29

29

29

29

29

29

29

*29

29

29 

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

29

_

-

812

29.0

1,610

Mar.

29 

29

29

29

29

29

29

29

29

31

s33

33

33

33

33

33

*33

33

33

33

33

33

33

33

33

33

33

33

33

985

31.8

1,950

Apr.

33 

33

33

33

33

33

33

33

33

33

33 

33

33

34

35_

35

35

*35

35

35

33

33

33

33

33

32

32

32

32

32

-

998

33.3

1,980

May

32 

32

43

55

55

55

55

55

55

55

55 

*55

55

"51 56

56

56

56

56

55

55

55

55

55

55

54

54

54

51

47

47

1,630

52.6

3,230

June

51 

52

52

52

52

58

71

71

71

71

71 

72

72

*71

71

71

71

71

71

71

71

*71

71

71

71

71

71

71

71

72

-

2,024

67.5

4,010

July

72 

71

71

71

71

71

71

71

71

71

71 

71

71

71

71

71

71

71

*71

*71

71

71

71

71

IP71

71

70

70

70

70

2,197

70.9

4,360

Aug.

50 

35

34

35

38

38

38

38

38

39

39 

39

39

39

39

*39

39

39

39

39

39

39

39

39

39

39

39

39

39

39

39

1,202

38.8

2,380

Sept.'

30 

20

19

19

19

19

19

18

18

18

*18 

19

18

18

18

19

19

19

19

19

19

19

19

19

19

19

19

19

19

18

574

19.1

1,140

Calendar year 1950 : Max - Min - Mean _ Ac-ft -

Water year 1950-51 : Max 72 Mln is Mean 38.9 Ac-ft 28,180

* Discharge measurement made on this day. 

Note. No gage-height record Dec. 22 to Apr. 

ments and gate openings at Granby Reservoir.

7; discharge estimated on basis of 3 discharge measure-
COLORADO RIVER MAIN STEM 25

Colorado River near Granby, Colo.

Location. Lat 40°07', long. 105°54 I , in sec. 22, T, 2 N., R. 76 W., on right bank half a 

mile upstream from bridge on U. S. Highway 34, ij miles upstream from Willow Creek, and 

3 miles (revised) northeast of Granby.

Drainage area. 322 sq mi.

Gage. Water-stage recorder. Altitude of gage is 7,960 ft (from topographic map). June 

T908 to September 1911, staff gage at site 300 ft upstream at different datum.

Extremes. --Maximum discharge during year, 80 cfs June 14 (gage height, 1.15 ft); maximum 

gage height, 1.45 ft Dec. 19 (backwater from ice); minimum daily discharge, 15 cfs Sept. 

29, 30.

1908-11, 1934-51: Maximum discharge observed, 4,100 cfs June 20, 1909 (gage height, 

5.5 ft, site and datum then in use); minimum daily, 6.6 cfs Jan. 29, 1950; minimum observed, prior to starting construction of Shadow Mountain Reservoir, 20 cfs Apr. 6, 1936 

(discharge measurement).

Remarks . --Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow completely regulated by Granby Reservoir (see p. 23 ). Several 

small diversions for irrigation above station. Transaountain diversions by Eureka and 

Grand River ditches (see p. 340 ) and Alva B. Adams tunnel (see p. 340).

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

0.7 

.9

1.1

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

31

30

30

31

31

"3? 32

32

*32

31

30

30

30

30

30

30

29

27

29

29

30

30

31

31

29

26 "27

27

29

29

30

925

29.8

1,830

Nov.

32

32

32

31

30

32

32

32

*32

32

32

32

32

32

32

32

32

32

34

32

34

34

34

34

34

34

34

35

36

71

-

982

32.7

1,950

Dec.

35

b31

b28

32

29

b3o" b27

b34

b36

b34

b35

*32

32

34

32

32

b30

b30

b31

b33

b30

b28

b28

b30

b32

b32

b31

b31

b30

b32

b31

972

31.4

1,930

Jan.

b29

b27

b27

b29

31

28

24 "25

25

26

*27

27

27

26

33

35

33

34

32

32

30

30

32

33

35

35

35

35

32

28

25

927

29.9

1,840

Feb.

24

25

27

30

31

31

30

30

30

*31

32

32

29

28

31

31

31

31

31

32

32

31

31

31

30

28

29

30

_

_

-

839

30.0

1,660

Mar.

28

W

30

29

29

31

34

33

35

36

33

30

34

*34

34

34

34

30

32

33

33

33

31

29

31

33

33

31

29

31

31

988

31.9

1,960

Apr.

3030"

31

32

33

32

31

32

*32

32

30

31

31

31

33

31

33

32

37

38

33

34

39 33

39

39

38

38

38

38

-

1,017

33.9

2,020

May

38

37

4£

53

58

58

58

58

58

59

59

*59

59

"57 60

51

51

52

51

51

51

52

46

50

46

45

46

48

42

39

45

1,581

51.0

3,140

June

51

51

51

45

44

44

51

51

56

62

64

62

60

64

60

59

62

64

60

64

 gff 65

62

59

57

56

56

56

56

56

1,708

56.9

3,390

July

56

57

 57 59

56

54

50

48

15

48

48

48

48

48

48

*50

52

51

51

51

51

50

51

51

51

51

51

51

48

52

57

1,592

51.4

3,160

Aug.

40

"3T 27

31

35

36

36

38

40

40

40

4,0

40

*39

39

39

39

39

39

42

40

39

39

39

39

39

39

39

42

40

39

1,184

38.2

2,350

Sept.

"25 32

24

23

23

24

*24

25

25

25

25

25

25

25

24

24

24

24

24

24

23

16

16

16

18

20

19

17

15

15

671

22.4

1,330

Calendar year 1950: Max 52 Min 6.6 Mean 30.3 Ac-ft 21,940

Water year 1950-51: Max 65 Min 15 Mean 36.7 Ac-ft 26,560

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 4, 5, Jan. 5 to May 9; discharge estimated on basis of 4 discharge measurements, weather records, and records for station below Granby Reservoir.
26 WILLOW CREEK BASIN

Willow Creek near Granby, Colo.

Location. Lat 40°11', long. 106°00', in NWij sec. 34, T. 3 N., R. 77 W., on right bank at 

bridge on State Highway 125, 100 ft downstream from Gold Run Creek,and 7 miles northwest of Granby.

Drainage area.--105 sq mi.

Records available. April 1935 to September 1951.

Gage.--Water-stage recorder. Lutum of gage is 8,236.88 ft above mean sea level, unadjusted. Prior to June 3, 1935, staff gage, and June 3, 1935 to Sept. 30, 1937, waterstage recorder, at site 10 ft downstream at datum 1.53 ft higher. Oct. 1. 1937, to 

Sept. 20, 1946, water-stage recorder at site 10 ft downstream at datum 0.95 ft higher. 

Sept. 21, 1946, to May 19, 1948, water-stage recorder at site 110 ft downstream at datum 1.70 ft lower. May 20 to Sept . 30, 1948, water-stage recorder at site 10 ft downstream at datum 0.95 ft higher.

Average discharge. 16 years, 63.4 cfs.

Extremes. Maximum discharge during year, 688 cfs May 29 (gage height, 4.96 ft); minimum 

daily, 7.0 cfs Feb. 1.

1935-51: Maximum discharge, 811 cfs May 16, 1938 (gage height, 5.44 ft), from 

rating curve extended above 650 cfs; minimum daily, 6 cfs Feb. 17-24, 1938, Dec. 15, 

16, 27, 1941.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Water diverted above station for irrigation of hay meadows.

Rating tables, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 16

3.8 122

3.0 156

3.8 330

May 17 to Sept. 30

2 12 3.0

4 23 3.5

O 63 4.0

5 108 5.0

180

278

406

700

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

35

26

21

26

29

30

31

Total

Mean

Ac- ft

Oct.

14

16

T5

14

14

*13

12

12

13

13

13

13

12

12

12

13

12

12

12

12

12

12

12

12

12

12

10

1z

11

10

11

385

12.4

764

Nov.

13

13

11

12

12

13

13

14

12

11

11

12

*12

13

14

12

12

13

13

14

15

14

13

13

12

12

12

12

12

12

-

377

12.6

748

Dec.

13

12

11

12

12

11

11

12

13

13

13

13

13

13

13

13

*13

12

11

12

11

11

11

11

11

11

10

10

10

11

11

364

11.7

722

Jan.

11

To

10

11

11

9.5

8.6

8.0

8.6

9.4

9.4

9.0

*8.8

8.8

9.2

9.1

9.0

9.4

8.7

8.3

8.9

9.2

9.2

8.8

8.4

8.0

9.0

9.5

9.1

8.3

7.6

282.8

9.12

561

Feb.

7.0

8.7

9.2

10

11

TT

no

9.8

9.8

10

9.8

8.8

7.8

7.9

8.1

8.2

8.5

9.0

9.5

9.2

9.0

9.0

9.3

9.4

8.4

8.4

9.5

_

-

-

253.7

9.06

503

Mar.

9.0

9T^

10

9.6

9.0

9.5

9.8

10

11

11

11

11

11

*11

11

10

10

11

11

12

13

13

12

11

12

12

13

12

12

13

13

343.4

11.1

681

Apr.

13

13

13

15

16

16

16

15

*14

12

12

13

14

16

19

22

25

30

35

38

41

40

44

54

52

61

60

67

82

80

-

948

31.6

1,880

May

66

57

52

60

90

145

19O

234

212

180

230

*260

272

263

254

313

380

410

440

48O

500

530

550

604

580

595

598

*625

673

613

574

11,030

356

21,880

June

577

430

420

349

307

278

*274

271

269

263

252

244

242

250

256

285

302

347

344

349

357

319

290

263

252

246

*236

226

216

205

-

8,979

299

17,810

July

191

176

164

149

136

125

116

107

100

95

90

*81

74

70

66

64

67

76

59

56

64

62

50

46

44

41

40

45

60

43

40

3,597

83.8

5,150

Aug.

52

41

62

53

47

39

38

40

35

33

32

30

27

*26

34

33

22

22

23

32

51

34

30

27

27

27

24

23

24

33

27

1,028

33.2

2,040

Sept.

22

23

20

18

18

18

16

16

16

*15

15

17

15

16

16

15

15

15

17

16

18

18

16

15

M

14

14

14

18

18

-

495

16.5

983

Calendar year 1950: Max 382 Min 9.1 Mean 53.3 Ac-ft 38,580

Water year 1950-51: Max 673 Min 7.0 Mean 74.2 Ac-ft 53,720

Peak discharge (base, 500 cfs). May 29 (4 a.m.) 688 cfs (4.96 ft); June 21 (3:30 a.m.) 403 cfs 

(3.99 ft).

* Discharge measurement made on this day.

Note. No gage-height record Apr. 14-25, May 17-24; discharge estimated on basis of recorded range 

in stage and records for stations on nearby streams. Stage-discharge relation affected by ice Nov. 

9 to Apr. 8, Apr. 11 (no gage-height record Nov. 9-12, Nov. 16 to Dec. 17, Dec. 24 to Mar. 13, Mar. 

17 to Apr. 8j discharge estimated on basis of 3 discharge measurements, weather records, and records 

for stations on nearby streams).
PHASER RIVER BASIN 27

Fraser River near Winter Park, Colo.

Location.--Lat 39°54'00", long. 105°46'35", in NEi~ sec. 4, T. 2 S., R. 75 W., on left bank 

1UU ft downstream from bridge on U. S. Highway 40, ij miles northwest of Winter Park, 

and 21 miles downstream from point of diversion for Moffa't water tunnel.

Drainage area.--27.6 sq mi.

Kecords available.--September 1910 to September 1930 and September 1933 to September 1951 in 

reports or ueological Survey. September 1910 to September 1951 in reports of State 

engineer. Records since June 9, 1936, equivalent to earlier records if diversion to 

Moffat water tunnel is added to flow past station.

Gage.--Water-stage recorder. Altitude of gage is 8,900 ft (from topographic map). Sept. 

?3, 1910, to May 12, 1916, staff gage at trail bridge 1 mile upstream at different datum.

Average discharge.--41 years, 41.6 cfs (including diversion to Moffat water tunnel).

Extremes.--Maximum discharge during year, 318 cfs June 20 (gage height, 2.17 ft); minimum 

daily, 3.2 cfs Sept. 3-6.

1910-51: Maximum discharge, 820 cfs June 13, 1918 (gage height, 2.9 ft); minimum, 

2.0 cfs Mar. 30, 1912.

Remarks.--Records fair. Transmountain diversions'above station through Berthoud Pass ditch 

(see p.340), and to Moffat water tunnel (see adjustment figures below).

Cooperation.--Record of flow diverted to Moffat water tunnel furnished by State engineer.

Rating table, water year 195O-51, except periods of loe effect

(gage height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used June 18, 19)

3.3 2.0

.4 4.0

.6 10.5

1.0 52

1.2 82

1.6 166

2.1 298

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

1

3

4

5

g

7

8

9

10

11

12

13

14

IS

16

17

16

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Ac -ft

Oct.

3.8

4T5

5.2

ITS

*4.3

4.3

.3

.3

.3

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.3

.0

.0

.0

.0

.0

128.0

4.13

254

Nov.

3.8 4T3-

4.3

4.3

4.3

4.3

4.6

6.4

13

15_

10

9.2

8.8

8.6

*8.4

8.2

8.0

7.7

7.7

7.7

8.4

8.4

7.7

7.8

8.2

7.8

7.6

7.5

7.4

7.4

-

226.8

7.56

45O

Dec.

7.4

7.2

7.2

8.0

8.6

*8.7 775"

7.2

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

6.8

6.7

6.8

7.0

6.6

6.4

6.6

6.8

6.6

6.4

6.2 6T2-

6.4

6.4

7.4

217.5

7.02

431

Jan.

6.8

6.6

6.6

6.8

7.1

6.5

6.2 *5-78-

7.2

77T

6.9

6.8

6.8

6.8

6.9

6.8

6.8

6.8

6.7

6.6

6.6

6.8

7.0

7.0

6.8

6.7

6.6

6.7

6.8

6.9

6.9

210.4

6.79

417

Feb.

4.9 S70-

6.4

6.7

*6.9

7.2

7.6

8.0

3.2

3.4

8.3

8.2

8.2

8.2

8,1

7.9

7.6

7.6

7.7

7.9

7.9

7.9

7.8

7.6

7.6

7.6

7.7

7.8

_

_

-

211.9

7.57

420

Mar.

7.7

7.8 778-

7.6

7.6

7.3

7.3

7.4

7 .4

7.4

7.2

7.2

7.0

6.8

6.7

6.6 STB6.7

6.9

*7.4

7.4

7.2

7.1

6.9

6.7

6.8

6.8

6.9

6.9

6.9

6.7

220.7

7.12

438

Apr.

6.5

6.3

6.2

6.3

6.7

*6.4

6.4

6.1

5.5

5.3

5.4

5.7

6.2

6.7

6.7

6.6

6.8

7.7

8.4

9.1

10

9.8

10

11

11

12

12

16

IF

13

-

2s: .8

8.39

499

May

To- 10

12

14

22

26

26

24

19

18

*21

22

19

16

22

26

29

30

30

29

30

29

29

29

27

27

28

32SO"

32

32

750

24.2

1,490

June

34

32

32

32

28

25

24

22

21

24

21

19

*18

18

17

17

22

*170

*216

*264

276 *5Bo~

229

208

221

*185

140

92

79

68

-

2,804

93.5

5,560

July

65

67

64

61

35

12

11

10

10

*10

9.4

9.4

9.4

9.1

9.1

8.8

9.1

9.1

8.4

9.4

9.8

9.4

6.8

8.0

7.7

7.4

7.4

7.4

7.4

7.0

6.7

518.2

16.7

1,030

Aug.

6 4

B7T

6.4

6.4

6.4

6.1

5.8

5.5

5.5

5.5

5.5

5.2

*4.9

4.9

4.6

4.6

4.3

4.3

4.6

5.5

5.8

4.9

4.9

5.5

5.2

4.6

4.6

4.0

4 .3 s!s

4.0

162.4

5.24

322

Sept.

3.6

3.4

3.2 372-

3.2

*3.2

3.4

3.4

3.4

3.4

3.4

3.8

3.6

3.4

3.4

3.6

3.6

3.4

3.8

3.4

5.2

47F

4.3

4.0

3.8

3.6

3.6

3.6

3.6

3.8

-

108.9

3.63

2±n

Adjusted for diversion to Moffat water tunnel

Mean 

Ac-ft 11,8 

728

9.17 

545

7.02 6 

431 '

79 7.57 7.12 8.89 66.4 

117 420 438 529 4,08O

169 107 32.9 18.6 

10,060 6,570 2,020 1,11O

Observed

Calendar year 1950: Max 27 

Water year 195O-51: Max 276

Min 2.9 Mean 9.34 Ac-ft 6,76O 

Min 3.2 Mean 15.9 Ac-ft 11,530

Adjusted

Calendar year 195O: Mean 28.1 

Water year 1950-51: Mean 37.8

Cfsm - In. - Ac-ft 20,320 

Cfsm - In. - Ac-ft 27,350

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 9-14, 16, 17, 24-30, Dec. 2-11, 17-19, 21-28, 

Jan. 1-4, Mar. 6-19, Mar. 22 to Apr. 4, Apr. 10-13, 16, 17 (no gage-height record Jan. 5 to Mar. 5; 

discharge estimated on basis of 2 discharge measurements, weather records, and records for nearby 

stations).
28 PHASER RIVER BASIN

Vasquez Creek near Winter Park, Colo.

Location. La t 39°55'15", long. 105°47'05"', in NWi sec. 33, T. IS., R. 75 W. , on right 

bank 75 ft downstream from bridge on U. S. Highway 40, a quarter of a mile upstream 

from mouth, l| miles downstream from Moffat water tunnel diversion, and 2|- miles northwest of Winter Park.

Drainage area.--27.8 sq mi.

Records available.--June 1907 to October 1909, August 1934 to September 1951. Records since 

May Bb, 193V, equivalent to earlier records if diversion to Moffat water tunnel is added to flow past station.

Gage.--Water-stage recorder and concrete control. Datum of gage is 8,768.48 ft above mean 

sea level, unadjusted. June 1, 1907, to Oct. 31, 1909, staff gage at site threequarters of a mile upstream at different datum.

Average discharge. 17 years (1934-51), 33.3 cfs (including diversion to Moffat water tun- nel). 

Extremes. Maximum discharge during year, 314 cfs June 21 (gage height, 2.89 ft); minimun 

 daily, 0.4 cfs July 12-14.

1934-51: Maximum discharge, 396 cfs June 15, 1935 (gage height, 2.64 ft); no flow 

Sept. 9-24, 1944, July 17, 18, 1946;

Remarks.--Records good above 10 cfs and fair below. Transmountain diversion above station 

to Moffat water tunnel was 16,220 acre-ft during water year 1950-51.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Mar. 5-7, 10-15, 20-22, 27)

0.7 0.2

.8 .8

.9 2.0

1.0

1.1 

1.3

3.8

6.0

12

1.4 18

2.0 116

2.9 316

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.7

1.5

1.4

*1.3

1.1

1.2

1.1

1.1

1.1

1.1

1.0

1.0

1.0

.9

,=£

.8

.9

.9

.9

1.0

1.0

1.0

1.0

1.0

1.0

1.1

.9

.9

1.0

1.0

32.9

1.06

65

Nov.

0.9

T73

1.7

1.3

1.5

1.4

1.5

*2.5

b7.0

b5.0

b8.0

b8. 8

b8.8

b9.2

*b9.4

b8.2

b8.8

8.7

8.4

8.1

8.7

8.4

7.6

b8.4

b8.2

b8.0

b8.0

b8.0

b8.4

1)8.4

-

192.5

6.42

382

Dec.

8.1

b7.6

b7.4

b8. 8

7.8

*b6.2

bT.O

7.5

7.5

7.5

7.2

7.2

7.2

6.9

7.2

7.5

1)6.8

b6.8

b6.8

b7.0

b6. 6

b6. 6

b6.8

7.0

b6.8

b6.6

b6. 6

b6.8

b7.2

b7.8

b7.8

222.6

7.18

442

Jan.

b7.4

b7.0

b7.0

7.8

7.8

7.0

6.4

*8.0

7.6

7.6

7.2

7.4

7.0

7.2

7.4

7.2

7.2

7.2

6.8

6.6

6.6

6.6

6.8

6.8

6.6

 675 6.2

6.4

6.6

6.6

6.6

216.8

6.99

430

Feb.

3.6 575

6.0

6.0

*4.0

 BTe 8.0

6.2

6.2

6.2

6.4

6.4

6.2

5.8

6.0

6.2

6.2

6.4

6.4

6.4

5.8

6.0

6.2

6.2

6.2

6.2

6.2

6.2

_

-

170.0

6.07

337

Mar.

6.4

6.6

6.6

6.8

6.9

6.6

6.3

b6.6

b7.0

7.2

7.2

7.2

6.3

 673 6.0

b6.2

b6.0

b6.2

b6.6

*6.9

6.9

7.2

b7.2

b6. 4

b6.2

be. 4

6.9

b6. 4

b6.0

b6.0

b6.2

203.7

6.57

404

Apr.

b5.0

bS.O

b4.0

t>3.5

3.3

*3.3

3.8

3.1

TT7

4.0

4.2

3.8

4.0

3.8

4.0

b4.4

b4.8

5.1

5.8

6.3

7.2

7.5

6.3

6.9

7.5

9.3

10

13

16

T2

-

181.6

6.05

360

May

10

9.0

8.7

7.8

11

11

12

11

10

9.3

*10

11

11

10

11

15

17

18

18

18

17

17

16

17

14

14

14

14

11

10

9.9

392.7

12.7

779

June

9.9

9.6

9.0

7.8

6.0

5.3.

4.7

4.7

4.5

4,7

4.9

4.2

*4.0

3.8

3.6

3.3

4.0

*104

*222

237

280

*239

211

200

202

*211

200

200

168

150

-

2,718.0

90.6

5,390

July

148 -86

18

17

9.9

1.5

1.4

1.3

.8

.6

*.5

.4

.4

.4

21

30

.9

19

.9

2.2

1.9

1.5

3.0

3.6 3.6'

3.2

3.0

3.0

3.2

2.9

2.9

392.0

12.6

778

Aug.

2.9 "277

2.7

2.7

2.7

2.4

2.2

2.2

2.2

2.0

1.9

1.9

*1.9

1.9

1.9

1.7

1.5

T75

1.5

2.2

2.2

2.0

1.9

2.0

1.9

1.7

1.5

1.7

2.0

2.2

1.9

63.6

2.05

126

Sept.

1.5

1.4

1.4

1.4

1.3

*1.3

1.3

1.3

1.2

T7f

1.3

1.4

1.3

1.2

1.2

1.2

1.2

1.2

1.3

1.3

2.2

T75

1.7

1.5 1.*

1.4-

1.3

1.3

l.F

1.4

-

41.5

1.3f

8f

Calendar year 1950: Max 44 Min 0.3 Mean 7.19 Ac-ft 5,200

Water year 1950-51: Max 280 Min 0.4 Mean 13.2 Ac-ft 9,580

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 5 to Mar. 4 (stage-discharge relation affected by ice during part 

of period); discharge estimated on basis of 2 discharge measurements, veather records, and records 

for stations on nearby streams.
FRASER RIVER BASIN 29

St. Louis Creek near Fraser, Colo.

Drainage area.--32.8 sq mi.

Records available. August 1934 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 8,980.17 ft above mean sea level, unadjusted.

Average discharge.--17 years, 37.3 cfs.

Extremes.--Maximum discharge during year, 377 cfs June 21 (gage height, 2.61 ft); minimum dailx. 5.0 cfs Feb. 1.

1934-51: Maximum discharge, that of June 21, 1951; minimum, 3.2 cfs Apr. 9, 1935 

(gage height, 0.7G ft).

Remarks.--Records good except those for periods of ice effect, which are fair. No diversion or regulation.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

.9 

1.1

4.0 

6.5

21

1.3 

1.6 

2.0 

2.5

190

342

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

17

16

15

*14

14

12

12

13

12

12

12

12

12

12

12

12

12

12

12

11

11

10

11

11

11

10

11

11

10

10

376

12.1

746

Nov.

10

10

blO

13

blO

12

12

11

blO

b9.0

*b!2

b!3

13

12

12

bll

12

12

12

12

14

12

12

bll

blO

blO

blO

blO

blO

b9.6

-

336.6

11.2 '668

Dec.

10

b9.6

b9.6

bll

blO

blO

*11

12

10

10

10

9.6

9.6

9.6

9.6

9.3

b9.3

b9.3

b9.3

9.3

b8.8

b£_Q

b8.2

8.6

9.0

9.0

9.0

9.3

9.3

8.6

8.6

294.5

9.50

584

Jan.

8.6

8.2

8.6

8.6

*9.5

9.0

b8.0

8.6

*9.0

9.0

8.6

8.6

8.6

8.6

8.2

.9

.6

.6

.6

.6

.6

.6

.6

.6

.6

.9

.9

.9

.2

6.2

6.0

248.9

8.03

494

Feb.

b5.o

b5.6

b6.0

b6.4

6.5

*7.2

7.2

7.6

i^9

7.9

7.6

7.6

7.6

b7.6

b7.5

7.6

7.2

7.2

7.2

7.6

7.6

7.6

7.2

7.2

7.2

7.2

7.2

7.6

_

_

-

200.8

7.17

398

Mar.

7.2

7.6

7.2

7.2

7.2

6.8

6.8

6.8

6.8

6.8

6.5

6.8

6.5

6.5

6.5

6.5

b6.2

b6.2

6.5

6.5

6.5

6.5

b6.2

b6.2

b6.2

b6.4

6.8

b6.6

b6.6

b6.6

b6.6

206.3

6.65

409

Apr.

b6.2

b6.2

b6.2

6.8

*6.8

6.8

6.8

6.8

b6.8

b6.6

b6.4

b6.4

b7.0

7.6

7.9

b7.4

b7.6

8.6

9.0

9.3

10

10

10

12

11

12

12

16

17

16

-

269.2

8.97

534

May

12

14

14

15

22

27

29

29

25

23

*25

31

32

27

31

41

46

49

52

62

64

68

77

80

80

86

102

139

148

169

187

1,806

58.3

3,580

June

166

136

122

107

*102

100

102

104

104

107

104

102

109

125

139

169

217

*292

289

298

355

5T6

292

277

286

298

298

292

286

274

-

5,968

199

11,840

July

277

271

277

277

262

250

259

241

214

193

*175

163

154

148

145

142

139

133

125

127

136

122

104

100

98

92

90

88

86

82

88

5,058

163

10,030

Aug.

80

80

77

75

71

66

63

60

56

54

51

47

*45

44

43

40

38

37

38

44.

44

38

36

36

35

33

32

.31

32

38

31

1,495

48.2

2,970

Sept.

29

2T

26

25

24

*24

24

24

23

23

23

25

23

23

21

21

20

20

22

20

24

23

22

22

21

20

19

19

23

19

-

679

22.6

1,350

Calendar year 1950: Max 263 Mln 8.0 Mean 33.0 Ac-ft 23,870

Water year 1950-51: Max 355 Mln 5.0 Mean 46.4 Ac-ft 33,600

Peak discharge (base, 240 cfs). June 21 (5 a.m.) 377 cfs (2.61 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
30 PHASER RIVER BASIN

Ranch Creek near Fraser, Colo.

Location. Lat 39°55'15", lone. 105°47'05", in NW^ sec, 22, T. IS., R. 75 W., on right 

bank 450 ft downstream from South Fork and 3 miles east of Fraser.

Drainage area.--19.9 sq mi.

.--August 1934 to September 1951. Records since May 15, 1949, equivalent 

"ords if diversion to Moffat water tunnel is added to flow past station.

Records available. 

to earlier rec

Gage. Water-stage recorder. Altitude of gage is 8,6"0 ft (from topographic map). 

Average discharge.--17 years, 20.9 cfs (including diversion to Moffat water tunnel).

Extremes.--Maximum discharge during year, 232 cfs June 21 (gage neight, 2.91 ft); minimum 

 daily, 2.6 cfs Nov. 10.

1934-51: Maximum discharge, 299 cfs .Tune 15, 1935 (gage height, 3.37 ft); minimum 

daily, 1.5 cfs (estimated) Feb. b-7, Mar. 18-21, 1935.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

0.5 

.6

2.3 

3.5 

7.5

1.0 

1.3 

1.7

2.0 

2.5 

2.8

158

212

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

3

2

3

4

5

6

7

8

9

10

11

12

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

5.5

5.7

5.1

*4.8

4.6

4.2

4.2

4.4

4.2

4.0

3.9

3.9

3.9

3.9

4.0

3.9

3.9

3.9

3.9

3.7

3.7

3.7

3.7

3.7

3.7

3.5

3.5

3.5

3.5

3.5

126.2

4.07

250

Nov.

3.7

3.7

3.7

3.9

3.4

3.7

4.0

3.9

b3.6

b2.6

*b4.6

b4.2

b3.8

4.6

4.6

4.2

4.2

4.2

4.4

4.4

4.9

4.6

4.4

4.2

4.2

4.0

4.2

4.2

4.2

4.2

-

122.5

4.oa

243

Dec.

4.2

4.2

4.2

4.2

4.2

4.0

4.2

4.2

4.2

4.2

4.2

*4.2

4.2

4.0

4.0

4.0

3.9

3.9

3.9

3.9

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.9

3.7

3.5

375

122.5

3.95

243

Jan.

3.5

3.4

b3.4

3.5

3.5

3.5

3.5

3.5

*3.4

5.7

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.4

3.4

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.5

108.2

3.49

215

Feb.

b3.0

b3.2

b3.4

b3.4

Mar.

3.4

3.4

3.4

3.4

b3.6J 3.4 

!

3. 1 3.4

3.9 5.4

4.0 3.4

4.01 3.4

*4.0

4.0

3.9

3.9

3.9

b3.8

b3.6

b3.6

b3.8

b3.8

3.9

3.9

3.7

3.7

3.5

3.5

3.5

3.5

3.5

_

-

103.2

3.69

205

3.4

3.4

3.4

3.4

3.4

3.4

i.3

a3.3

33,3

a3.5

*3.3

3.3

3.3

3.3

3.3

3.4

3.5

3.4

3.4

3.4

3.5

3.5

104.8

3.38

208

Apr.

3.5

3.5

3.7

3.7

3.5

*3.4

3.4

3.4

3.4

3.4

3.4

3.5

3 . 9

4^2

4.0

4.0

4.4

4.8

4.9

5.3

5.5

5.3

5.7

6.8

6.4

7.1

7.5

9.8

12

To

153.4

5.11

304

May

7.8

8.8

8.5

9.8

14

17

16

17

15

14

17

June

101

80

67

60

52

46

44

45

45

48

46

*18 j 45

19

17

20

27

33

36

iO

42

44

45

51

52

52

53

61

77

80

85

102.

1,098.?

35.4

2,180

47

50

59

79

107

*174

192

1S2

20 :

*196

180

163

145

160

158

140

132

131

-

3,191

10 e

6,330

July

131

131

129

128

122

115

106

93

81

70

*57

52

47

45

44

41

Aug.

21

20

20

20

20

18

17

16

16

15

14

13

13

*12

12

12

41 11

40

37

39

42

36

32

30

29

26

26

26

26

24

23

1,870

60.3

3,710

11

11

14

15

12

11

12

12

10

10

12

11

15

11

437

14.1

867

Sept.

9.8

9.2

9.0

8.5

8.5

*8.0

8.2

7.8

7.8

7.3

7.1

8.0

8.2

7.8

7.5

7.3

7.1

7.1

7 .8

7.3

1C

8.8

9.0

9.0

8.5

7.8

7.1

7.1

7.5

6.8

240.9

8.03

478

Calendar year 1950: Max 107 Mln 2.6 Mean 12.8 Ao-ft 9,280

Water year 1950-51' Max 207 Mln 2.6 Mean 21.0 Ac-ft 15,230

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records.

b Stage-discharge relation affected by ice.
FRASER RIVER BASIN

Ranch Creek near Tabernash, Colo.

Location. on. Lat 39°59'55 39°59'55", long. 105°49'10", in see . 6 , T. 1 S . , R. 75 W. , on right bank

a quarter of a iplle upstream from Meadow Creek and ij miles east of Tabernash.

Drainage area. --50. 7 sq mi.

Records available. --September 1934 to September 1951. Records since May 15, 1949, equivalent to earlier records if diversion to Moffat water tunnel is added to flow past 

station.

Gage. --Water-stage recorder. Datum of gage is 8,338.01 ft above mean sea level, unadjusted. 

Average discharge . --17 years, 39.4 cfs (including diversion to Moffat water tunnel).

Extremes . --Maximum discharge during year, 402 cfs June 18 (gage height, 3.75 ft); minimum 

daily, 3.4 cfs Nov. 10.

1934-51: Maximum discharge, 506 cfs June 15, 1935 (gage height, 4.40 ft), from 

rating curve extended above 360 cfs; no flow Feb. 15 to Mar. 13, 1937, Feb. 13. 1947, 

and perhaps other days.

Remarks .--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Transmountain diversion above station to Moffat water tunnel was 1,890 

acre-ft during water year 1950-51. Several small diversions for irrigation of hay 

meadows above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In eublc feet per second)

1.5

1.6

1.7

1.8

2.0 

2.4 

3.0 

3.6

195

355

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

9.0

9.5 S70-

7.5

*7.5

7.5

7.0

7.0

7.0

7.0

6.6

6.2

5.8

5.8

6.2

5.8

5.8

6.2

6.2

6.2

6.2

6.2

6.2

6.2

5.8

5.4

STF

5.8

5.4

5.8

203.6

6.57

404

Nov.

6.2

6.6

7.0

7.5

7.0

7.5

7.5

8.5

8.0

5.4

*8.0

8.0

8.0

8.0

8.6

7.0

8.0

8.4

8.6

8.0

BTO- 9.2

.8

.8

.6

.4

.4

.2

.2

.4

-

226.8

7.56

450

Dec.

7.4

6.6

6.4

7.6 B-76-

5.2 S70-

6.8

6.6

6.0

6.4

*6.6

6.6

6.0

6.4

6.0

5.6

5.6

5.6

6.0

5.6

5.6

5.8

6.0

5.8

5.8

5.6

6.2

6.6

6.8

6.4

192.2

6.20

381

Jan.

5.8

5.6

5.8

6.2

6.4

5.6

5.0

*B78- 572-

6.6

6.0

6.2

6.0

6.2

6.4

6.2

6.2

6.4

6.0

5.8

5.8

6.0

6.2

6.0

5.6

5.2

5.4

5.8

5.8

5.6

5.4

184.2

5.94

365

Feb.

4.0

57T

4.6

4.8

4.8

*4.8

5.0

5.2

5.0

5.2

5.0

5.4 572-

4.6

4.8

5.0

5.0

5.2

5.4

5.4

4,6

4.8

5.0

5.2

5.2

4.6

4.8

5.0

_

_

-

138.0

4.93

274

Mar.

4.6 rrff

4.8

4.6

4.6

5.2

5.2

4.8

4.6

5.0

5.2

5.0

5.0

5.0

5.2

5.0

4.8

4.6

*4.6

5.0

5.0

5.2

5.2

5.0

5.2

5.4

5.8

5.6

5.6

5.8

6.0

157.4

5.08

312

Apr.

6.2

6.0 572"

6.4

7.0

*7.2

7.6

7.6

7.6

7.2

6.8

9.2

10

9.8

9.6

9.2

14

23

42

45

49

46

46

47

45

49

48

54

63

5TT

-

752.6

25.1

1,490

May

44

37

4T

47

63

79

74

76

72

63

64

*78

82

82

82

107

122

142

137

148

153

153

163

169

153

151

163

199

226

210

231

3,617

117

7,170

June

242

204

185

157

139

123

120 T23"

125

130

139

128

132

135

142

193

*224

334

319

324

355 3T9-

260

231

224

245

*252

226

202

185

-

6,117

204

12,130

July

177

T7T

167

159

150

135

127

118

107

96

86

*79

76

72

68

64

63

64

56

57

78

65

53

44

46

42

40

40

44

36

3T

2,616

84.4

5,190

Aug.

34

35

3T

32

34

28

27

25

24

24

22

20

18

*17

15

13

1212"

12

16

25

18

16

16

18

16

14

13

16

32

18

656

21.2

1,300

Sept.

16

13

13

13

12

12

*12

12

1112"

11

13

13

12

12

12

12

11

13

12

19

TB

16

15

14

12

12

12

13

12

-

388

12.9

770

Calendar year 1950 : Max 176 Mln _ Mean 23.2 Ac-ft 16,830

Water year 1950-51 : Max 355 Hln 3.4 Mean 41^8 Ac-ft 30,240

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 31, Nov. 3, Nov. 9 to Apr. 18 (no gage-height 

record Jan. 5 to Apr. 5; discharge estimated on basis of 3 discharge measurements, weather records, 

and records for stations on nearby streams).
32 PHASER RIVER BASIN

Meadow Creek near Tabernash, Colo.

Location.--Lat 40°02 I 55", long. 105°46'30", in sec. 15, T. IN., R. 75 W., on right bank 

b miles northeast of Tabernash.

Drainage area.--7.0 sq mi, approximately.

Records available.--May 1936 to September 1951 (no winter records 1937, 1941-44).

Gage.--Water-stage recorder. Altitude of gage is 9,780 ft (from topographic map). Prior 

 fo Sept. 23, 1940, at site 1,000 ft upstream at different datum.

Average discharge.--10 years (1937-40, 1944-51), 11.1 cfs.

Extremes.--Maximum discharge during year, 255 cfs June 17 (gage height, 3.72 ft), from 

rating curve extended above 160 cfs; minimum discharge not determined, occurred during 

period of no gage-height record.

1936-51: Maximum discharge, that of June 17, 1951; probably no flow at times during ice periods.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion above station.

Revisions (water years).--W 1089: 1945(M).

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.2

1.3

1.4

0.6 

1.2 

2.1

1.7 

1.9 

Z.Z

6.3

10.5

21

2.5 

2.8 

3.4

42

76

180

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.8

2.0

T76

1.5

*1.4

1.1

1.3

1.4

1.1

1.1

1.0

1.0

.9

.9

1.0

.9

.9

.8

.8

.8

.8

.8

.7

.8

.7

.6

.7

.7

.6

.6

31.6

10.2

63

Nov.

0.9

.8

.8

1.0

.7

.9

.9

(*)

1.0

-

29.0

0.97

58

Dec.

(*)

1.0

31.0

1.0

61

Jan.

(*)

0.9

27.9

0.9

55

Feb.

0.8

-

-

-

22.4

0.8

44

Mar.

0.7

(»)

21.7

0.7

43

Apr.

(*)

 2.0

-

60.0

2.0

119

May

5.0

5.0

4.5

4.5

7.0

10

12

13

12

12

13

*15

16

15

16

21

25

28

33

36

42

45

56

59

54

56

68

98

112

102

116

1,111.0

35.8

2,200

June

104

64

51

45

45

49

59

61

59

62

59

60

71

73

80

109

*135

180

I3T

124

*138

90

75

70

77

83

73

67

60

58

-

2,418

80.6

4,800

July

54

52

50

51

47

40

40

36

28

24

20

*19

18

16

15

14

14

14

12

13

15

14

10

8.7

8.1

7.3

6.7

6.9

8,1

7.1

7.7

676.6

21.8

1,340

Aug.

9.0

9.6

972

8.5

9.2

6.3

5.3

5.0

4.6

3.9

3.6

3.2

3.1

*2.8

2.7

2.6

2.3

2.3

2.2

2.8

4.1

3.2

2.7

2.8

2.8

2.2

2.0

1.9

2.5

7.1

4.0

133.5

4.31

265

Sept.

2.9

2.6

2.2

.9

.7

.6

* .5

.4

.4

.4

.3

.8

.8

.6

.3

.2

.1

.1

.5

.5

.1

.1

.0

.1

.8

.5

.4

.1

.6

.6

-

50.1

1.67

99

Calendar year 1950: Max us Mln - Mean 9.24 Ac-ft 6,700

Water year 1950-51: Max 180 Min - Mean 12.6 Ac-ft 9,150

Peak discharge (base, 150 cfs). June 17 (11:3O p.m.) 255 cfs (3.72 ft).

* Discharge measurement made on this day.

Note. Stage-disoharge relation affected by ice Nov. 8 to May 17 (no gage-height record Nov. 10 to 

May 11; discharge estimated on basis of 5 discharge measurements, weather records, and records for 

stations on nearby streams).
ERASER RIVER BASIN

Fraser River at Granby, Colo.

Location.--Lat 40°05', long. 105°57', in sec. 1, T. IN., R. 76j W., on left bank just

 3dwnstream from Tenmile Creek, half a mile southwest of Granby, and 85 miles upstream 

from mouth.

Drainage area.--285 sq mi.

Records available.-August 1904 to September 1909, September 1937 to September 1951. Rec-

 ords since September 1937 equivalent to earlier records if diversion to Moffat water 

tunnel is added to flow past station.

Gage. Water-stage recorder. Altitude of gage is 7,900 ft (from topographic map). July

 Z8, 1904, to Sept. 30, 1909, staff gage at former bridge near present site at different datum.

Average discharge.--19 years, 201 ofs (including diversion to Moffat water tunnel).

Extremes. Maximum discharge during year, 1,910 cfs June 21 (gage height, 3.37 ft); mini-

 mum daily, 25 cfs Oct. 24, 26, 27. 1904-9, 1937-51: Maximum discharge, that of June 21, 1951; minimum daily, 14 cfs 

Sept. 22, 1944.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 wFTTch are fair. Transmountain diversions (see p.340). Diversions above station for 

irrigation of about 6,250 acres above station and 1,580 acres below.

Cooperation. Records of flow diverted to Moftat water tunnel furnished by State engineer.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Apr. 16 to June 16)

0.4 

.7

2.0

152

560

2.5 

3.0 

3.3

840

1,320

1,780

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

33

39

44

41

37

*35

35

37

34

32

30

30

29

28

28

29

30

29

29

28

28

28 

28

25

26

25

25

28

29

28

32

959

30.9

1,900

Nov.

34

34

33

38

34

39

41

42

*30

35

39

42

38

42

4*7

42

50

48

52

52

54

60

ro

56

58

54

54

54

56

56

-

1,372

45.7

2,720

Dec.

54

52

48

54

50

50

52

54

54

52

52

*54

56

54

56

56

56

45

48

54

54

50 

41

42

39.

43

43

44

44

45

44

1,540

49.7

3,050

Jan.

43

43

43

43

43

40

37

38

#41

43

44

41

38

38

38

38

38

38

38

38

37

37 

37

37

37

37

37

38

38

38

36.

1,212

39.1

2,400

 [ 

Feb.

37

37

40

40

40

39

*39

39

40

40

40

40

40

40

41

42

42

42

41

41

42 

42

43

43

43

42

42

_

-

-

1,136

40.6

2,250

Mar.

41

43

44

44

43

43

43

43

43

43

47

43

46

46

46

45

*45

45

46

46

46

47 

49

45

50

52

54

60

58

58

56

1,460

47.1

2,900

Apr.

64

74

82

94

96

*105

105

94

78

66

62

64

74

90

150

191

234

265

288

308

336

340 

296

340

308

344

324

372

414

389

-

6,047

202

11,990

May

280

227

219

284

368

466

456

448

416

376

364

*430

438

434

420

520

590

690

650

680

716

752 

758

812

758

746

764

861

950

875

950

17,698

571

35,100

June

990

812

764

690

605

528

492

484

466

484

556

461

452

461

461

510

585

* ,070

,430

,360

* ,630

.640 

,390

,190

,170

,180

* ,080

*910

805

660

-

25,316

844

50,210

July

645

605

506

497

474

384

352

332

308

288

261

238

216

205

191

219

191

*201

180

180

223

212 

176

162

146

130

126

130

146

126

114

8,164

263

16,190

Aug.

117

117

120

123

150

108

102

99

88

88

90

81

72

*75

72

68

62

58

57

62

102

83

75

75

79

70

63

62

63

108

83

2,652

85.5

5,260

Sept.

65

60

58

54

52

51

*51

48

48

48

48

52

49

48

46

46

46

4546"

48

58

62 

55

54

52

48

45

45

49

51

-

1,528

50.9

3,030

Adjusted for diversions to Moffat water tunnel.

Mean

Ac-ft

46. 0 

2,830

48.7 

2,900

49.7 

3,050

39.1 

2,400

40.6 

2,250

47.1 

2,900

202

11,990

668 

41,080

999 

59,420

453 

27,850

150 

9,250

82.0 

4,680

Calendar year 1950 : Max 620 

Water year 1950-51 : Max l, 640 25

Mean 120 

Mean 189

Ac-ft 87,020 

Ac-ft 137,000

Adjusted

Calendar year 1950 : Mean 161 

Water year 1950-51 : Mean 236

Cf sm - 

Cf sm -

Ac-ft 116,400 

Ac-ft 170,800

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 9 to Apr. 15 (no gage-height record Jan 

" *-- . 28 to Apr. 5; discharge estimated on basis of 3 discharge measurements, weather : 

for stations on nearby streams).

Mar. 17, Mar. 

and records

7 to 

records
34 COLORADO RIVER MAIN STEM

Colorado River at Hot Sulphur Springs, Colo.

Location. Lat 40°05', long. 106°05', In sec. 1, T. 1 N., R. 78 W., on left bank about 

 1 ,UUU ft north of U. S. Highway 40, 1 mile east of Hot Sulphur Springs, and 3 miles upstream from Beaver Creek.

Drainage area.--782 sq mi.

Records available --July 1904 to September 1909, September 1910 to September 1924, October 

laab to September 1928, and October 1933 to September 1951 in reports of Geological Survey. July 1904 to September 1909, September 1910 to September 1924, and October 1925 to 

September 1951 in reports of State engineer. Prior to October 1918, published as Grand 

River at Hot Sulphur Springs.

Gage.--Water-stage recorder. Altitude of gage is 7,670 ft (from railroad elevations). 

July 1904 to April 1906, staff gage on bridge l£ miles downstream at different datum, 

April 1906 to September 1930, chain gage at bridge 1 mile downstream, datum of gage 

7',651.26 ft above mean sea level, unadjusted.

Extremes.--Maximum discharge during year, 2,530 cfs June 21 (gage height, 3.03 ft); minimum daily, 67 cfs Dee. 25, Jan. 8.

1904-9, 1910-24, 1925-51: Maximum discharge observed, 10,300 cfs June 15, 1921 (gage 

height, 8.7 ft, site and datum then in use); minimum daily determined, 36 cfs Dec. 30, 

31,-1931.

Remarks.--Records excellent except those for periods of ice effect or no gage-height re^- 

ord , which are fair. Flow affected by transmountain diversions (see p.340), storage 

reservoirs (see pp.340,341), and diversions for irrigation of about 13,000 acres above 

station. Records of chemical analyses and water temperatures for the water year 1951 

are given in Water-Supply Paper 1200.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.0

128

245

360

1.5 

2.0 

3.0

685

1,100

2,480

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

90

103

103

~TO 106

98

95

98

95

*95

88

90

88

88

88

93

93

90

88

88

C.3

88

88

86

86

83

81

81

83

81

78

2,795

90.2

5,540

Nov.

90

95

88

95

90

95

100

108

103

95

106

110

117

*100

130

96

117

110

124

124

130

144

T3T

111

120

117

117

111

111

120

-

3,308

110

6,560

Dec.

117

TC3

95

110

95

90

95

100

105

100

100

108

112

108

110

108

*100

80

86

99

86

73

70

73

iZ

76

76

75

79

81

83

2,860

92.3

5,670

Jan.

79

81

7?

79

77

79

69

67

7T

75

81

75

*75

73

73

71

71

73

73

69

70

69

70

70

70

70

70

71

73

73

70

2,266

73.1

4,490

Feb.

75

77

83

83

83

88

86

84

88

*86

86

86

88

84

84

88

93

97

9T

93

90

93

93

95

93

90

93

93

_

-

2,469

88.2

4,900

Mar.

90

93

95

93

88

95

92

90

93

99

104

88

99

99

99

99

86

99

86

*57

97

108

104

88

108

108

112

122

TT7

108

108

3,059

98.7

6,070

Apr.

134

149

173

211

211

231

240

196

147

*136

106

TIT

111

154

245

240

306

420

452

459

498

492

440

518

459

518

485

524

589

596

-

9,553

318

18,950

May

459

372

348

m

518

706

741

785

*748

671

664

770

808

808

755

910

1,050

1,260

1,220

1,290

1,390

1,530

1,560

1,630

1,540

1,520

1,540

1,670

1,810

1,680

1,670

32,837

1,059

65,130

June

1,700

1,530

1,390

1,240

1,020

886

*838

815

800

822

928

800

778

79T

80S

870

982

1,480

1,900

1,920

*2,250

2, 150

1,820

1,580

1,500

1,500

1,390

1,260

1,190

1,070

-

38,009

1,267

75,390

July

1,010 9~6~4

830

800

755

657

608

570

530

504

466

420

390

372

348

378

360

*390

360

330

372

408

360

336

300

272

267 '27?

289

278

278

14,474

467

28,710

Aug.

294

289

324 '259"

284

240

222

222

209

188

192

180

168

164

157

150

*144

147

141

T5T

227

196

172

16B

168

157

150

150

157

232

180

6,118

197

12,130

Sept.

150

120

114

106

106

106

100

98

95

95

95

*106

103

98

95

93

93

93

100

100

114

117

106

98

95

93

90

88

TO

95

-

3,057

102

6,060

Calendar year 1950: Max 1,050 Min 67 Mean 212 Ac-ft 153,800

Water year 1950-51: Max 2,250 Min 67 Mean 331 Ac-ft 239,6'00

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov. 10-21, Dec. 3 to Apr. 18 (no gage-height record Jan. 7 to Mar. 5; discharge estimated on basis of 2 discharge measurements, weather records, and 

unpublished records for station 1 mile downstream).
WILLIAMS RIVER BASIN 35

Williams River near Leal, Colo.

Location. Lat 39°50', long. 106°03, in sec. 31, T. 2 S., R. 77 W., on right bank Just 

downstream from Kinney Creek and 2 miles north of Leal.

Drainage area.--89.5 sq mi.

Records available.--October 1933 to September 1951 in reports of Geological Survey, July 

1933 to September 1951 in reports of State engineer. Records since May 10, 1940, 

equivalent to earlier records if diversion to Jones Pass tunnel is added to flow past 

station.

Gage. Water-stage recorder. Altitude of gage is 8,790 ft (from topographic map). 

Average discharge.--18 years, 106 cfs (including diversions to Jones Pass tunnel).

Extremes.--Maximum discharge during year, 1,240 cfs June 21 (gage height, 3.65 ft), from 

rating curve extended above 850 cfs; minimum daily, 16 cfs Apr. 11.

1933-51: Maximum discharge observed, 1,530 cfs June 21, 1938 (gage height, 3.81 ft), 

from rating curve extended above 1,000 cfs; minimum daily, 13 cfs Dec. 28, 29, 1939.

Remarks.--Records good except those for periods of ice effect, which are fair. Transmountain diversion above station to Jones Pass tunnel (see p. 340 ). Diversions upstream for irrigation of hay meadows, of which about 200 acres are above and about 

40 acres below station.

Revisions.--W 1039: Drainage area.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discnarge, in cubic feet per second)

.6 

1.0 85

1.5 

2.0 

3.0 

3.5

192

350

810

1,130

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

35

39

39

37

36

35

32

33

33

33

*32

31

30

30

30

31

30

29

29

29

28

28

28

26

27

26

25

26

26

25

25

943

30.4

1,870

Nov.

26

26

24

27

24

26

26

26

20

*19_

26

26

25

24

24

24

25

24

25

25

27

26

24

23

24

24

24

23

24

24

-

735

24.5

1,460

Dec.

24

20

20

b24

22

b20

25

25

25

24

24

24

24

*24

24

24

21

23

24

23

22

22

22

22

22

22

21

21

21

21

22

702

22.6

1,390

Jan.

22

21

20

20

21

21

22

21

20

20

20

20

20

*20

20

19

19

19

19

19

19

19

19

19

19

20

20

20

20

19

20

617

19.9

1,220

Feb.

b20

21

20

20

20

20

20

20

is

20

21

21

21

*23

20

21

20

20

20

20

21

20

20

20

20

20

19

19

_

_

-

566

20.2

1,120

Mar.

21

19

19

19

19

19

19

19

19

*19

19

19

19

19

19

19

17

18

18

18

18

18

17

17

18

18

20

18

18

18

19

576

-18.6

1,140

Apr.

17

17

17

19

19

19

17

17

17

*17

16

17

17

17

20

21

23

25

26

30

33

33

35

38

38

43

42

48

56

50

-

804

26.4

1,590

May

42

39

39

50

66

87

100

110

*99

88

97

126

133

114

114

142

170

178

182

213

205

205

218

235

205

210

247

350

390

398

450

5,302

171

10,520

June

422

350

312

267

241

232

232

254

254

264

241

232

244

287

318

398

502

900

900

*906

1.120

972

810

760

828

876

840

816

745

650

-

16,713

539

32,080

July

'520' 630

610

575

580

502

506

474

426

370

343

322

315

277

260

*250

257

235

215

213

224

210

190

178

166

156

151

149

163

137

140

9,844

318

19,530

Aug.

135

T2F

131

120

118

106

102

97

90

88

84

80

76

73

69

68

*66

65

64

76

80

69

65

63

63

60

56

56

57

65

54

2,522

81.4

5,000

Sept.

51

48

46

41

40

39

38

38

*37

35

35

40

40

38

42

42

42

42

44

43

54

51

50

48

46

43

41

40

48

43

-

1,285

42.8

2,550

Calendar year 1950 : Max 942 Min 18 Mean 8.25 Ac-ft 59,740

Water year 1950-51 : Max 1,120 Min 16 Mean 110 Ac-ft 79,470

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice
36 WILLIAMS RIVER BASIN

Keyser Creek near Leal, Colo.

Location. Lat 39°54'50", long. 106°01'00", In SE-J sec. 33, T. IS., R. 77 W., on right 

bank 200 ft upstream from Slmpson Creek and 7 miles northeast of Leal.

Drainage area. 13.7 sq mi.

Records available. August 1942 to September 1951 (no winter records 1942-43). 

Sage.--Water-stage recorder. Altitude of gage is 9,080 ft (from topographic map). 

Average discharge.--8 years (1943-51), 16.8 cfs.

Extremes.--Maximum discharge during year, 150 cfs June 21 (gage height, 3.01 ft); minimum 

not determined, occurred during period of no gage-height record.

1942-51: Maximum discharge, 167 cfs May 21, 1948 (gage height, 2.78 ft), from ratim 

curve extended above 60 cfs; maximum gage height, 3.01 ft June 21, 1951; minimum discharge not determined, occurred during period of no gage-height record.

Remarks.--Records fair except those for periods of Ice effect or no gage-height record, 

which are poor. No diversion or regulation.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.0

1.1 

1.3

1.5

3.4

5.8

13

23

2.0 

2.5 

3.0

55

92

149

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

6.8

6.8

6.5

6.1

5.8

5.3

5.6

5.8

5.6

*5.3

5.3

5.3

5.1

5.3

5.6

5.3

5.1

5.1

5.1

4.8

4.8

4.6

4.6

4.6

4.6

4.8

4.6

4.4

476

4.6

163.6

5.28

324

Nov.

4.6

379

b3.7

b4.0

b4.1

b4.3

b4.3

b4.0

3.8

*5.4

4.0

4.5

4.5

4.2

4.1

4.0

4.0

4.0

4.0

4.1

4.3

4.1

3.8

3.8

4.1

4.1

4.1

4.1

3.0

4.1

-

121.9

4.06

242

Dec.

(*)

4.0

124.0

4.0

246

Jan.

(*)

3.5

108.5

3.5

215

Feb.

(*)

3.0

_

-

-

84.0

3.0

167

Mar.

(*)

 2.8

86.8

2.8

172

Apr.

(*)

3.8

-

114.0

3.8

226

May

5.4

5.6

6.0

7.0

9.0

10

12

12

11

10

12

14

16

13

*16

22

28

30

33

36

36

37

46

43

47

48

58

75

75

86

90

949.0

30.6

1,880

June

80

70

61

58

52

50

50

51

50

52

53

50

52

55

59

68

81

113

*112

118

140

*123

111

103

109

111

110

106

102

95

-

2,445

81.5

4,850

July

9392"

93

92

86

85

85

81

76

70

63

61

57

54

51

49

49

*47

45

46

46

42

40

37

33

31

31

30

29

27

28

1,749

56.4

3,470

Aug.

30

28

27

25

25

22

21

20

19

18

16

15

14

14

13

12

*12

13

13

17

18

14

13

13

12

11

11

11

11

14

11

513

16.5

1,020

Sept.

11

10

9.5

8.5

8.0

.5

.2

.0

* .8

.2

.5

.2

.9

.2

.5

.2

.8

.5

.5

 5

8.9

8.5

8.5

8.2

8.2

7.2

6.8

-875 6.1

7.2

-

236.6

7.89

469

Calendar year 1950 : Max 130 Win - Mean 14.8 Ac-ft 10,740

Water year 1950-51 : Max 140 Mln - Mean 18.3 Ac-ft 13,280

Peak discharge (base, 100 cfs). May 30 {3 p.m.) 128 cfs (2.83 ft); June 21 (5 a.m.) 150 cfs (3.01

ft).

Discharge measurement made on this day.

b Stage-discharge relation affected by ice.
WILLIAMS RIVER BASIN 37

Williams River near Parshall, Colo.

Location. Lat 40°00', long. 106°11', in SEv sec. 36, T. IN., R. 79 ¥., on right bank 

IbU rt downstream from bridge on State Highway 286, 2| miles upstream from Battle 

Creek, and 4 miles south of Parshall.

Drainage area. 186 sq mi.

Hecords available.--July 1904 to September 1924 and October 1933 to September 1951 in 

reports of Geological Survey. July 1904 to September 1924 and June 1933 to September 

1951 in reports of State engineer. Records since May 10, 1940, equivalent to earlier 

records if diversion to Jones Pass tunnel is added to flow past station.

Gage. Water-stage recorder. Datum of gage is 7,805.00 ft above mean sea level, unad-

""^fusted. Prior to Oct. 18, 1919, staff g?ge, and Oct. 18, 1919, to Sept. 30, 1924, 

water-stage recorder at site lj miles downstream at different datum. October 1933 to 

August 1938, water-stage recorder at bridge 150 ft upstream from present site at datum 

1.00 ft higher.

Average discharge.--38 years (1904-24, 1933-51), 155 cfs (including diversion to Jones 

Pass tunnel).

Extremes. Maximum discharge during year, 1,310 cfs June 21 (gage height, 3.82 ft); mirtimum daily, 22 cfs Nov. 10.

1904-24, 1933-51: Maximum discharge observed, 2,570 cfs June 14, 1918 (gage height, 

6.0 ft, site and datum then in use), from rating curve extended above 1,400 cfs; a 

higher discharge probably occurred June 15, 1918, when gage was destroyed; minimum 

daily, 10 cfs Sept. 15-17, 1934.

Remarks. Records good except those for periods of ice effect or no gage-height reqord, 

which are fair. Transmountairt diversion by Jones Pass tunnel (see p. 340 ). Diversions above station for irrigation of about 1,040 acres above station and about 650 

acres below. About 140 acres above station irrigated by diversions into the drainage

area> Rating tables, water year 1950-51, except periods of lee effect 

(gage height, In feet, and discharge, In cubic feet per second) 

Oct. 1 to May 5 May 6 to Sept. 30

122

172

1.2 

1.4 

1.7 

2.0 

3.0 

3.7

46

78

146

242

770

1,230

Discharge, in cubic feet per second, water year.October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

55

59

60

58

56

55

53

53

*54

53

51

53

50

50

51

51

51

49

49

48

48

48

48

46

49

48

46

48

48

46

46

1,580

51.0

3,130

Nov.

48

49

44

45

47

48

49

48

35

*2_2

35

40

44

45

45

43

44

46

47

47

46

46

46

46

47

47

46

45

45

44

-

1,329

44.3

2,640

Dec.

43

43

43

44

39

35

38

41

42

39

39

39

39

*39

38

37

38

39

41

40

39

39

40

42

42

41

42

43

44

45

45

1,258

40.6

2,500

Jan.

44

43

45

46

46

44

42

43

*47

46

47

46

45

45

47

47

47

47

45

41

45

46

45

44

44

45

45

45

43

42

39

1,386-

44.7

2,750

Feb.

38

TJ

47

48

50

48

46

45

45

46

46

44

42

43

44

45

46

45

43

44

45

45

44

43

43

43

42

44

-

-

1,248

4-4.6

2,480

Mar.

42

41

43

43

43

44

44

45

45

*44

43

44

43

43

42

41

40

41

43

43

42

41

42

43

44

41

39

38

39

37

36

1,299

41.9

2,580

Apr.

38

41

46

43

42

40

40

38

39

*37

36

38

44

45

45

49

50

54

60

66

75

73

78

96

98

111

107

127

149

139

-

1,944

64.8

3,860

May

109

88

88

107

146

191

204

215

198

169

167

188

*201

178

159

198

238

276

276

326

340

355

350

390

345

350

405

573

650

644

722

8,846

285

17,550

June

716

606

568

480

405

360

335

340

335

360

385

335

326

365

400

502

612

957

964

*964

*1,200

1,120

908

830

830

890

920

920

*860

752

-

19,545

652

38,770

July

728

698

698

639

662

551

540

518

458

380

330

303

272

238

*219

208

219

208

178

167

219

285

246

231

204

191

191

382

191

167

164

10,485

338

20,800

Aug.

172

162

178

T54

159

141

134

129

122

120

122

118

111

109

100

*98

98

96

93

113

136

113

104

102

102

93

91

89

93

107

93

3,652

118

7,240

Sept.

85

80

78

73

71

69

67

65

*64

64

65

71

73

67

67

67

67

65

64

6Z

74

74

73

69

67

62

59

57 "67

67

-

2,053

68.4

4,070

Calendar year 1950 : Max 876 Min 22 Mean 101 Ac-ft 73,160

Water year 1950-51 : Max 1,200 Min 22 Mean 150 Ac-ft 108,400

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 4 to Mar. 26, Mar. 30, Apr. 1, 2 (no gage-height 

record Jan. 7 to Mar. 6; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for nearby stations).

256684 O - 53 - 4
WILLIAMS RIVER BASIN 

Williams Fork; Reservoir near Parshall, Colo.

Records available . October 1948 to September 1351 in reports of Geological Survey. Octooer lyaa to September 1951 in files of city engineer of Denver.

Gage.--Tape-weight gage. Datum of gage is mean sea level (levels by city engineer of 

Denver).

Extremes.--Maximum contents observed during year, 6,620 acre-ft July 15 to Sept. 15 (ele- 

 vatIon, 7,703.0 ft); minimum observed, 237 acre-ft Oct. 1 to May 11 (elevation, 7,656.0 

ft).

1948-51: Maximum contents observed, 6,620 acre-ft for periods each year (elevation,

7,656.0 ft

; minimum observed, 237 May 11, 1951 (elevation,

Remarks.--Reservoir is formed bv concrete arch dam. Dam completed in October 1938; storage 

 Eegan in April 193S. Capacity of reservoir, 7,180 acre-ft between elevations 7,633 ft 

(Invert of outlet pipe) arj 7,705 ft (top of tairitor gates on spillway). No dead storage. Figures given herein represent jsable contents. Water is used to compensate for 

diversions to Jones Pass tunnel (see p.340) made during periods when flow of Colorado 

River is insufficient to supply decreed prior water rights below Williams River. Contents computed from once-daily readings at 8 a.m.

Cooperation. Gage-height record furnished by city engineer of Denver.

Monthly elevation and contents, water year October 1950 to September 1951

Date

Dec. 31. ..................

Calendar year 1950. .....

Sept. 30. ..................

Water year 1950-51. .....

Elevation 

(feet)t

7,656.0

_

7,681.8

-

Contents 

(acre-feet)

237

237

237

_

237

237

2,430

-

Change in contents 

during month 

(acre-feet)

0

-440

-4,190

+2,190

t Elevation at 8 a.m.
WILLIAMS RIVER BASIN 

Williams River below Williams Fork Reservoir, Colo.

39

Location. La t 40°02', long. 106°12', in Nfi£ sec. 23, T. IN., R. 79 W. , on right bank a 

quarter of a mile downstream from Williams Fork Reservoir Ddm, about 2 miles upstream 

from mouth, and 2 miles southwest of Parshall.

Drainage area.--234 sq mi.

Records available.--October 1948 to September 1951 (no winter records 1949).

Gage.--Water-stage recorder. Altitude of gage is 7,600 ft (from reservoir elevations).

Extremes. Maximum discharge during year, 1,410 cfs June 21 (gage height, 6.24 ft); minimum 

 daily, 42 cfs Dec. 8.

1948-51: Maximum discharge, that of June 21, 1951; minimum daily recorded, 3.3 cfs 

Oct. 1, 1948, from rating curve extended below 50 cfs.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

FIW regulated by Williams Fork Reservoir (see preceding page). Transmountain diversion 

through Jones Pass tunnel (see p. 340 ). Diversions above station for irrigation of 

about 3,220 acres above station and 100 acres below. About 430 acres above station 

irrigated by diversion into drainage area.

Rating table, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second)

1.9 

2.4 

3.0 

4.0 

5.0

39

99

210

465

830

1,440

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

13

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27

28 

29

30

31

Total

Mean

Ac-ftj

Oct.

70

70

68

68

68

67

66

66

66

66

49

56

61 

66

66 

66 

66 

60 

57

57 

57 

59 

61 

61

61

60

56 

54

54

54

1,905

61.5

3,780

Nov.

54

54

54

56

54

54

60

61

 61

60

59

54 

53

53 

54

54 

58

60 

61 

61

67 

71 

71 

70 

7.0

68

67

66 

62

59

~

1,806

'60.2

3,580

Dec.

60

60

59

58

57

54

52

42

44

46

45

48 

54

 56 

56

57 

57 

57 

57 

56

56 

56 

56 

56 

56

56 

56

56 

56

54

54

1,687

54.4

3,350

Jan.

54

54

54

54

54

55

55

55

55

55

55

55 

55

 55 

55

55 

55 

55 

55 

55

54 

54 

54 

54 

54

54 

54

54 

53

53

52.

1,685

54.4

3,340

Feb.

52

48

45

43

43

43

43

43

43

43

43

43 

43

43 

43

43 

 43 

43 

43 

43

43 

43 

43 

43 

43

44 

44

44

-

-

1,223

43.7

2,430

Mar.

44

44

44

44

44

45

45

45

45

45

 45

45 

45

45

45

46 

47 

47 

47 

47

47 

47 

47 

47 

47

48 

48

48 

49

49

49

1,430

46.1

2,840

Apr.

49

49

50

51

54

56

57

57

58

59

59

59

65

71 

73

 85 

91 

91 

91 

92

93

121 

134 

208 

250

216 

200

118 

112

130

-

2,879

96.0

5,710

May

130

154

158

154

152

158

166

240

290

302

140

*7T

75 

76

78 

80 

82 

85 

88

89 

92 

95 

125 

288

338 

365

471 

584

553

634

6,380

206

12,650

June

658

570

536

480

417

*36b

338

342

345

358

400

368 

350

368 

402

459

546 

910 

1,050 

1,060

 1,250 

1,260 

1,070 

964 

938

1,000 

974

946 

 892

798

20,414

680

40,490

July

758

713

718

658

670

584

560

546

321

255

310

330 

305

252 

 245

290 

288 

282 

262 

232

260 

315 

338 

292

260

214 

206

252 

260

214

182

11,377

367

22,570

Aug.

206

212

224

210

196

190

150

150

139

137

143

145 

132

127 

114

 110 

110 

108 

108 

111

145 

143 

134 

123 

112

106 

98

99 

99

111

114

4,316

139

8,560

Sept.

Ill

99

85

72

66

70

72

72

 72

67

65

68 

75

75 

289

392 

352 

163

135 

168

172 

168 

166 

166 

164

164 

166

263 

302

 292

4,591

153

9,110

Calendar year 1950 : Max 1,040 Mln 17 Mean 121 Ac-ft 87,450

Water year 1950-51 : Max 1,260 Mln 42 Mean 164 Ac-ft 118,400

 Discharge measurement made on this day.

Note. No gage-height record Dec. 31 to Mar. 10 (stage-discharge relation affected by lee during 

part of period); discharge estimated on basis of 2 discharge measurements, weather records, and gate 

openings at Williams R>rk Reservoir.
TROUBLESOME CREEK BASIN

Troublesome Creek near Troublesome, Colo.

Location. Lat 40°04', long. 106°19', in sec. 12, T. IN., R.80 W., on left bank 50 ft

 upstream from bridge on U. S. Highway 40, half a mile upstream from mouth, and half 

a mile west of old Troublesome post office.

Hecords e available.--July 1904 to October 1905, April 1922 to September 1924, October 1941

 to September 1951. July 1937 to September 1941 in files of Bureau of Reclamation. 

Gage. Water-stage recorder at present site since Sept. 26, 1949. Datum of gage is

 7 344.13 ft above mean sea level, datum of 1929. July 22, 1904, to Oct. 31, 1905, staff 

gage about 300 ft downstream from old highway bridge a quarter of a mile upstream at 

different datum. Apr. 26, 1922, to Sept. 30, 1924 and July 1, 1937, to Oct. 23, 1942, 

staff gage at old highway bridge a quarter of a mile upstream at datums 6.85 and V-03 

ft higher, respectively. Oct. 24, 1942, to Sept. 25, 1949, water-stage recorder 30 ft 

downstream from old highway bridge a quarter of a mile upstream at datum 7.03 ft highAverage discharge.--14 years (1904-5, 1921-24, 1941-51), 54.6 cfs.

Extremes. Maximum discharge during year, 516 cfs May 29 (gage height, 5.57 ft); maximum

 gage height observed, 6.20 ft Feb. 18 (backwater from ice); minimum daily, 12 cfs

° 1922-24, 1941-51: Maximum discharge, 1,230 cfs July 23, 1945 (gage height, 4.80 ft, 

site and datum then in use), from rating curve extended above 370 cfs; minimum daily, 

1.4 cfs July 11, 1946. Remarks.--Records good except those for periods of ice effect or no gage-height record,

 which are poor. Diversions upstream from station for irrigation of about 6,500 acres

above station. 

Revisions. W 959: Drainage area.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 1-12)

Oct. 1 to Jan. 31

3.0 10

3.1 14

3.2 20

3.4 38

Peb. 1 to Sept. 30

2.8 

3.1

3.5 

4.0

28

70

138

4.5 230

5.0 350

5.5 495

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

*13

12

12

18

20

22

2T

*21

20

16

14

13

13

13

13

18

20

19

16

15

15

16

16

16

15

15

15

15

15

496

16,0

984

Nov.

16

16

18

22

22

22

23

23

21

*20

24

26

29

31

32

29

30

32

32

32

35

32

32

31

29

30

28

28

28

28

-

801

26.7

1., 590

Dee.

29

27

26

28

27

25

25

27

32

31

31

30

30

29

31

*32

30

27

27

29

28

26

27

26

26

26

25

24

26

26

26

859

27.7

1,700

Jan.

24

23

23

25

24

20

18

19

20

23

23

23

22

*21

23

23

23

23

22

21

20

22

24

23

22

22

23

24

23

21

19

686

22.1

1,360

Peb.

17

19

21

24

26

26

25

24

24

24

24

24

22

19

20

21

21

*21

21

21

21

22

23

23

22

23

24

23

_

_

-

625

22.3

1,240

Mar.

24

25

24

24

23.

24

25

26

27

*28

27

27

27

27

27

25

26

27

28

30

32

32

30

28

30

32

33

32

32

33

35

870

28.1

1,730

Apr.

34

34

36

39

40

40

38

37

36

36

37

39

*42

38

44

43

52

70

69

*77

87

76

89

107

98

118

97

98

118

128

-

1,897

63.2

3,760

May

98

84

77

86

108

188

200

236

208

177

183

228

*244

230

186

216

248

262

300

350

368

378

378

411

411

426

405

441

*495

435

360

8,417

272

16,690

June

352

312

265

*208

160

153

*138

136

140

141

133

126

*115

111

117

111

133

172

174

186

268

216

183

146

118

104

94

88

82

80

-

4,762

159

9,450

July

80

62

55

55

52

49

45

39

37

28

26

*24

21

19

23

24

34

*47

34

39

54

55

47

44

38

38

40

42

39

43

45

1,278

41.2

2,530

Aug.

63

62

80

64

62

48

54

57

42

35

34

30

28

28

28

*27

26

26

26

37

57

42

35

30

30

29

28

27

30

43

34

1,242

40.1

2,460

Sept.

28

26

26

26

26

25

24

24

24

24

24

*24

24

22

21

20

20

18

20

19

20

18

20

19

18

18

16

17

18

18

-

647

21.6

1,280

Calendar year 1950: Max 224 Mln 12 Mean 38.6 Ac-ft 27,970

Water year 1950-51: Max 495 Mln 12 Mean 61.9 Ac-ft 44,770

Peak discharKe (base, 350 cfs). May 29 (9 a.m. to 4 p.m.) 516 cfs (5.57 ft)j June 20^(11 p.m.)

. . 

Discharge measurement made on this day.

Dec. 2-14, Dec. 17 to 

affected by ice during 

weather records, and rec-
BLUE RIVER BASIN 41

Blue River, at Dillon, Colo.

Location. Lat 39"36'50", long. 106"03'05", In sec. 18, T. 5 S. , R. 77 W., on right bank

 5TT~upstream from bridge on U. S. Highway 6 at edge of Dillon, a short distance upstream from Snake River and Tenmile Creek.

Drainage area.--129 sq mi.

Records available . October 1910 to September 1951.

gage Water-stage recorder at present site since Oct. 25, 1939. Datum of gage is 8,821.42

 Ft above mean sea level, unadjusted.- Oct. 15, 1910, to Apr. 21, 1920, staff gage, Apr. 

22, 1920, to July 21, 1939, and Oct. 25, 1939, to Apr. 22, 1949, water-stage recorder 

at site 15 ft upstream, just below former bridge, at same'datum. July 22 to Oct. 24, 

1939, chain gage 400 ft upstream at same datum.

Average discharge.--41 years, 119 cfs.

Extremes.--Maximum discharge during year, 850 cfs June 21 (gage height, 3.77 ft); minimum

1910-51- Maximum'discharge observed, 1,180 cfs June 2, 1914 (gage height, 4.35 ft), 

June 14, 1924 (gage height, 3.6 ft); maximum gage height observed, that of June 2, 1914; 

minimum discharge observed, 7.4 cfs Mar. 22, 1933 (discharge measurement).

Remarks --Records good except those for periods of ice effect or no gage-height record,

 wTTTch are fair. Diversions for irrigation of about 150 acres of hay meadows above

station

Rating tables, water year 1950-51, except period of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 26 to July 23)

Oct. 1 to Nov. 9 Nov. 10 to Sept. 30

0.9 

1.1 

1.3 

1.6

18

28

170

315

500

950

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*42~ 42

42

»42

42

40

40

38

38

38

37

36

36

36

35

35

35

34

34

34

34

34

34

33

33

32

32

32

32

32

11

1,115

36.0

2,210

Nov.

31

32

31

30

30

30

31

32

31

29

29

32

32

30

28

29

30

*28

29

29

30

31

30

28

27.

27

27

28

28

28

-

887

29.6

1,760

Dec.

25

25

27

27

»24

22

26

28

27

27

28

28

28

27

26

25

25

26

27

26

24

23

23

24

24

23

23

24

25

25

25

787

25.4

1,560

Jan.

23

23

24

24

23

20

19

19

20

»21

22

22

21

22

23

23

23

23

22

22

21

23

23

23

22

22

23

23

22

20

19

680

21.9

1,350

Feb.

18

2TJ

22

26

25

25

25

24

25

25

25

23

»22

22

23

24

24

25

24

23

24

25

25

24

23

24

24

23

-

-

-

662

23.6

1,310

Mar.

24

25

23

22

27

26

26

27

*28

28

27

25

26

26

26

25

24

23

24

25

25

25

24

24

25

25

25

24

23

23

24

771

24.9

1,530

Apr.

23

23

24

24

24

23

23

23

22

IP.

20

20

24

25

28

29

*31

32

32

34

37

40

43

50

56

63

69

76

90

99

-

1,127

37.6

2,240

May

93

86

76

81

102

130

*166

187

199

199

192

201

224

224

213

218

235

243

246

290

329

322

329

368

354

343

374

472

564

592

616

8,268

367

16,400

June

652

572

516

460

428

385

368

385

410

413

*413

392

399

413

436

*480

592

724

*778

778

825

800

719

660

647

688

688

701

674

665

-

17,061

569

33,840

July

642

608

600

592

600

552

560

556

500

468

420

413

*410

396

382

374

402

399

346

385

399

346

315

298

270

240

232

256

343

-322

298

12,924

417

25,630

Aug.

287

266

280

298

263

232

211

196

189

172

163

155

146

137

130

»124

122

119

122

*124

130

139

150

139

128

126

117

111

106

104

104

5,090

164

10,100

Sept.

~9T 102

91

88

83

81

78

75

72

70

67

67

66

*66

66

64

62

59

57

56

60

60

62

62

60

55

52

51

51

50_

2,030

67.7

4,030

Calendar year 1950: Max 629 Min 18 Mean 95.1 Ac-ft 68,820

Water year 1950-51: Max 825 Min 18 Mean 141 Ac-ft 102,000

Peak discharge (base, 500 cfs).--June 1 (9 a.m.) 670 cfs (3.41 ft); June 21 (11 a.m.) 850 cfs 

(3.77 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 24 to Jan. 2. No gage-height record Nov. ID14, Jan. 3 to Apr. 8 (stage-discharge relation affected by ice during most of periods); discharge 

estimated on basis of 3 discharge measurements, weather records, recorded range in stage, and records 

for nearby stations.
42 BLUE RIVER BASIN 

Snake River at Dillon, Colo.

Location.--Lat 39°36'50", long. 106°03'05", in sec. 18, T. 5 S., R. 77 W., on right bank

 at private bridge at Dillon 300 ft upstream from mouth.

Drainage area.--92 sq mi, approximately.

Records available.--October 1910 to September 1919, December 1929 to September 1951.

Gage. Water-stage recorder. Datum of gage is 8,820.54 ft above mean sea level, unadjusted.

 act. 15, 1910, to Apr. 25, 1913, staff gage at datum 1.54 ft higher, and Apr. 26, 1913,

to Sept. 30, 1919, staff gage at datum 1.52 ft higher.

Average discharge.--31 years, 66.1 cfs.

Extremes. Maximum discharge during year, 948 cfs June 20 (gage height, 4.02 ft), from 

rating curve extended above 700 cfs; minimum daily, 7.6 cfs Feb. 1.

1910-19, 1929-51: Maximum discharge, 1,200 cfs June 13, 1935 (gage height, 4.25 ft), 

from rating curve extended above 700 cfs; minimum daily, 3 cfs Nov. 9, 1912.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 which are fair. Diversions for irrigation of about 350 acres above station. Diversion 

above station for power in sec. 19, T. 5 S., R. 76 "W. , on right bank 65 miles above 

station; water is discharged to Blue River just above mouth of Straight Creek. Discharge measurements of power ditch, in cubic feet per second, are given in following 

table:

Date

Oct. 2

Nov. 7

Dec. 6

Jan. 8

Feb. 13

Mar. 12

Discharge

29.1

17.6

19.1

8.2

7.1

11.4

Date

Apr. 9

May 7

June 4

July 9

Aug. 16

21

Sept. 15

Discharge

10,2

32.7

0

3.2

61.5

65.3

39.9

Rating tables, water year 195O-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.2

1.3 

1.5 

1.9

Oct. 1 to June 19

8.0 2.2 114

11 2.5 200

22 3.0 445

3.5 720

June 20 to Sept. 30

1.5 

1.7 

2.0 

2.2

2.6 

3.0 

3.9

195

380

875

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

11

TT

11 *ll

10

10

9.8

9.8

9.8

9.8

9.8

9.8

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

 8T? 8.9

8.9

8.9

298.5

9.63

592

NOV.

8.9

9.2

8.6

8.3

8.3

8.0

*87B~

9.2

b9.2

b9.2

bll

T2- b!2

12

12

bll

11

11

12

11

12

12

11

blO

blO

blO

blO

blO

blO

blO

-

307.5

10.2

610

Dec.

10

blO

b!2

bT2

b!2

*bll

b9.2

b9.2

b9.4

b9.2

b9.2

9.8

9.8

9.2

9.2

8.9

b8.8

b8.8

b9.2

b9.2

b9.2

b8.8

b8.8

b9.0

b9.0

b9.0

b8.8

 §76- 8.6

9.0

9.0

293.9

9.48

583

Jan.

8.6

8.6

8.8

8.8

8.8

8.6

8.0

876

9.2

*"9T?

9.2

9.0

8.6

8.6

8.6

8.6

8.8

8.8

8.8

8.6

8.8

9.0

9.0

9.0

8.8

8.8

9.2

9.2

9.2

9.0

9.0

273.8

8.83

543

Feb.

^72" 7.6

9.4

9.6

9.6

10

10

10

10

10

10

10

*10

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

9.0

8.8

_

-

262.8

9.39

521

Mar.

8.6

8.8

8.8

8.8

8.8

8.8

8.6

8.6

*8.6

8.6

8.6

8.4

8.4

8.8

9.2

9.2

9.0

8.6

8.8

9.0

9.0

9.0

8.8

9.2

9.2

9.2

9.0

9.0

8.8

8.8

8.8

273.8

8.83

543

Apr.

9.0

9TC

9.2

9.2

9.2

9.2

9.2

9.2

*9.8

9.5

b9.2

b9.2

b9.4

9.8

11

12

12

14

14

17

21

22

20

23

23

27

33

42

464"3

-

510.1

17.0

1,010

May

34

25

?5

32

46

70

*76

81

71

58

65

85

85

70

62

70

78

88

96

127

135

135

146

165

146

146

165

228

270

300

596

3,576

115

7,090

June

423

335

305

*265

236

216

212

236

255

255

250

265

290

335

396

*511

604

732

774

*803

'503 869

713

684

743

797

791

767

749

713

-

15,327

511

30,400

July

701

655

684

684

656

590

590

568

520

475

430

400

*365

335

325

335

375

315

305

320

231

203

181

174

147

134

132

144

248

178

178

11,618

375

23,040

Aug.

147

137

142

152 "134"

126

114

104

104

91

82

73

64

60

55

*51

46

*42

41

58

54

61

61

51

42

36

32

31

31

36

^0

2,288

73.8

4,540

Sept.

26

TZ

21

21

20

19

19

19

18

18

18

17

16

*14

T5

15

14

14

14

14

18

16

16

16

14

14

14

14

15

14

-

505

16.8

1,000

Calendar year 1950: Max 546 Min 6.6 Mean 47.3 Ac-ft 34,240

Water year 1950-51: Max 869 Min 7.6 Mean 97.4 Ac-ft 70,470

Peak discharge (base, 450 cfs) . June 20 (11:30 p.m.) 948 cfs (4.02 ft); July 16 (11 p.m.) 596 cfs 

(3.42 ft)j July 28 (11 p.m.) 563 cfs (3.36 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 28 to Apr. 7 (stage-discharge relation affected by Ice during 

most of period); discharge estimated on basis of 3 discharge measurements, weather records, and records for nearby stations.
43

Tenmile Creek at Dillon, Colo.

Location. Lat 39°36'45", long. 106°03'15", in sec. 18, T. 5 S., R. 77 W., on left Dank at 

Dillon, 250 ft downstream from bridge on U. S. Highway 6, and 600 ft upstream from mouth.

Drainage area.--115 sq. mi.

Records available.--October 1910 to September 1919, April 1930 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 8,817.97 ft above mean sea level (unadjust- 

 ed). Oct. 15, 1910, to Sept. 30, 1919, staff gage and Oct. 26, 1929, to Aug. 4, 1939, 

water-stage recorder, at site 300 ft upstream at different datum.

Average discharge.--31 years (1910-19, 1929-51), 124 cfs.

Extremes.--Maximum discharge during year, 1,270 cfs June 21 (gage height, 4.77 ft); maximum gage heigh1;, 4.88 ft June 19; minimum laily discharge, 16 cfs Feb. 7,

1910-19, 1930-51: Maximum discharge, 2,010 cfs June 1, 1933 (gage height, 5.82 ft, 

site and datum then in use), from rating curve extended above 900 cfs; minimum daily, 

2 cfs Feb. 15-17, 20, 1918.

Remarks.--Records good except those for periods of ice effect, which are fair. Flow partly regulated by Robinson Reservoir (capacity, 2,520 acre-ft). Diversions for irrigation of about 210 acres of hay meadow upstream from station.

Racing tables, water year 1950-51, except periods of Ice effect (gage

height. In feet, and discharge, Ln cubic feet per second)

(Shifting-control method used June 17-20)

Oct. 1 to May 4 May 5 to 3ept. 30

13 450

750

1,150

Discharge,

2.3 56

2.7 142

3.1 260

In cx'bio feet per second, water year October 1950 to September 1951

Day

^

2

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

23

30

31

Total

Mean

Oct.

29

32

33

32

*31

31

30

27

27

27

27

27

27

27

27

28

28

27

26

26

26

26

25

25

25

24

23

25

25

23

23

839

27.1

Ac-ftj 1,660

Nov.

25

23

23

26

25

30

2^

*30

28

27

28

30

30

30

27

27

28

27

27

28

28

28

27

27

26

26

26

26

27

27

-

818

27 .3

1,620

Dec. 1 Jan. Feb. Mar.

23

24

26

26

*24

22

23

25

26

25

26

27

26

25

25

25

25

25

25

24

23

22

23

23

23

22

22

23

24

24

23

75:

24.2

1,190

23 I 18

23

23

23

22

21

20

2T

21

22

22

22

21

22

22

23

2.3

20

22

23

23

22

16

54

29

56

21

21

*21

22

22

22

23

Zi 25

22

2,

20

22

23

22

22

22

22

23

23

21

20

679

25

24

25

26

26

24

23

23

24

22

-

-

-

642

21.9 ! 22.9

1,350 1,270

24

25

24

22

25

22

22

20

"19

21

Apr.

18

18

19

18

19

±8

19

19

*1S

18

]- TB~

20

18

17

12

17

17

IT

18

19

18

18

17

17

18

20

20

21

22

23

25

29

33

35

41

46

46

48

18 ! 51

17

17

17

18

595

19.2

1,180

75

May

64

59

586E~

94

167

*161

204

19O

17C

190

228

222 i9e

190

228

 

June

750

618

534

435

405

425

492

558

570

552

*516

534

576

*624

690

822

266 ! 893

Z'fci 1,010

340 *1,040

4C2

450

425

534

558

492

600

720

848

eeo

73 1 893

915

30.5

1,810

912

11,162

360

22,140

1,020

1 , 150

 §97

*867

846

893

912

893

893

828

763

-

22,108

737

43,850

July

708

696

714

714

684

630

636

606

540

510

435

445

*420

400

375

380

405

390

365

405

370

315

276

280

247

222

222

234

225

219

24T

13,309

429

26,400

 

Aug.

231

213

264 222"

210

187 ]-?S

164

153

142

135

130

120

116

109

*103

94

92

90

114

120

123

103

100

103

90

84

80

78

82

76_

4,104

132

8,140

Sept.

74

7T

67

65

62

60

58

55

54

52

50

54

54

 51

45

44

47

44

47

47

57

55

55

52

48

43

41

42

48

45

-

1,587

52.9

3,150

Calendar year 1950: Max 952 Min 15 Mean 117 Ac-ft 84,640

Hater year 1950-51: Max 1,150 Min 16 Mean 156 Ac-ft 114,100

Peak discharge (base, 700 efs).--May 30 (11 p.m.) 1,1.0 -,rs (4.54 ft); June 21 (10:30 p.m.) 1,270 

cfs (4.77 ft); June 25 (10 p.m.) 1,090 cfs (4.52 ft).

* Discharge measurement nade on this day.

Note.--Stage-discharge relation affected by Ice Nov. 9 to Feb. 5, Feb. 

23-26, 28-30, Apr. 11-13.

to Mar. 9, Mar. 12, 17-20,
44 BLUE RIVER BASIN

Straight Creek near Dillon, Colo.

Location. Lat 39°38 I 55", long. 106°01 I 05", in NWtr sec. 4, T. 5 S., R. 77 W., on left bank 

i.OUU ft upstream from Laskey Creek and 3j miles northeast of Dillon.

Drainage area. 12.8 sq ml.

Records available.--September 1943 to September 1951 (no winter records prior to 1947).

Gage.--Water-stage recorder. Datum of gage is 9,386.17 ft above mean sea level, unadjusted. 

 Prior to Sept. 22, 1949, at site 150 ft upstream at datum 6.52 ft higher.

Average discharge.--!, years (1946-51), 15.3 cfs.

Extremes.--Maximum discharge during year, 138 cfs June 21 (gage height, 2.29 ft); maximum 

gage height, 2.32 ft June 21; minimum discharge not determined.

1943-51: Maximum discharge, 167 cfs June 17, 1950 (gage height, 2.34 ft); maximum 

gage height, 2.71 ft July 6, 1949 (site and datum then In use); minimum discharge not 

determined.

Remarks.--Records fadr except those for periods of ice effect or no gage-height record, 

which are poor. Jo diversion above station.

Rating table, water year 195O-51, except periods of ice effect

(gas.e height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 21 to July 7)

1.2 1.8

1.3 3.2

1.4 6.0

1.5 10

2.1 

2.5 152

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

6.4

7.2

57S

6.4

*6.0

5.7

5.4

5.7

5.4

5.4

5.4

5.4

5.2

5.2

5.2

5.2

5.2

5.2

5.2

4.9

4.9

4.9

4.9

4.6 4T9~

4.6

4.6

4.6

4.6

4.6

4.6

164.3

5.30

326

Nov.

4.6

4.3

b3.8

b4.8

b5.6

5.2

4.9

4.9

b4.9

b3.0

*b7.0

5TS

5.0

5.0

4.8

4.5

4.2

4.2

4.6

4.3

4.6

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

-

137.9

4.60

274

Dec.

(*)

 3.9

120.9

3.9

240

Jan.

3.7

114.7

3.7

228

Feb.

. 3.3

_

_

-

92.4

3.3

183

Mar.

, 3.0

93.0

3.0

184

Apr.

3.4

-

102.0

3.4

202

May

5.6

5.0 570"

5.8

7.0

9.0

11

11

11

10

11

12

12

11

*11

14

14

14

18

21

19

20

22

23

21

22

25

32

37

41

45.

525.4

16.9

1,040

June

44

36

33

*31

29

28

57J

30

32

34

33

36

*40

48

*58

72

*85

92

*102

*94

106

114

110

112

114

110

108

114

116 TT4"

-

2,103

70.1

4,170

July

114

114

114

*116

IT?

108

104

92

81

*74

72

69

66

64

60

63

60

55

54

53

54

50

49

46

44

43

43

49

44

42

4T

2,153

69.5

4,270

Aug.

43

4T

41

40

36-

35

33

31

29

27

25

23

22

21

19

18

17

*18

18

21

19

18

16

16

15

14

14

14

14

15

12

726

23.4

1,440

Sept.

12

TT

11

10

9.6

9.6

9.2

8.8

8.4

8.4

8.4

9.2

8.8

*8.4

8.4

8.0

8.0

8T4- 7.6

7.6

9.6

9.6

9.2

8.8

8.4

7.6

7.6

7.6

8.8

7.6

-

265.6

8.85

527

Calendar year 1950: Max 130 Mln - Mean 12.3 Ac-ft 8,900

Water year 1950-51: Max 116 Mln - Mean 18.1 Ac-ft 13,080

Peak discharge (base, 12O cfs). June 21 (5 p.m.) 138 cfs (2.29 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 12-18, Nov. 27 to May 15 (stage-discharge relation affected by 

ice during part of periods); discharge estimated on basis of 2 discharge measurements, weather records, and records for nearby stations.
BLUE RIVER BASIN 45

Willow Creek near Dillon, Colo.

Location. Lat 39°39'00", long. 106°04'45", In NW£ sec. 1, T. 5 S., R 78 W., on right bank 

at bridge on State Highway 9, 700 feet upstream from mouth,and 3 miles northwest of 

Dillon.

Drainage area. 13.5 sq mi.

Records available. July 1942 to September 1951 (discontinued).

Gage. Water-stage recorder. Datum of gage is 8,691.59 ft above mean sea level, unadjust- ed.

Average discharge. 9 years, 15.9 cfs.

Extremes. Maximum discharge during year, 210 cfs June 21 (gage height, 2.35 ft), from rating curve extended above 130 cfs; maximum gage height, 2.64 ft July 7; minimum daily 

discharge, 0.7 cfs Oct. 30 to Nov. 3.

1942-51: Maximum discharge, that of June 21, 1951; maximum gage height, 2.64 ft July 

7, 1951; minimum daily discharge, 0.4 cfs July 29-31, Aug. 1, 6, 1942, Sept. 26, 28, 29, 

Oct. 4, 7, 1948.

Remarks. Records fair except those for period of no gage-height record, which are poor. 

Diversions for irrigation of about 50 acres of hay meadows above station.

Rating table, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used May 29 to June 10, June 15-17, 

June 21 to July 1, July 2-9, July 12 to Aug. 23)

0.5 0.3

.6 1.1

.7 3.0

1.1 14

1.5 

1.8 

2.5

38

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

3.8

 375 4.8

2.8

2.0

 1.7

1.3

1.5

1.5

1.5

.3

.1

.1

.1

.1

.1

.1

.0

a

.1

.0

.0

.0

.0

.0

1.0

1.0

.9

.9

tf

45.7

1.47

91

Nov.

0.7

[7

1.0

.9

1.0

1.5

2.6

(*)

 10

-

229.1

7.64

454

Dec.

(*)

7.5

232.5

7.5

461

Jan.

(*)

6.0

186.0

6.0

369

Feb.

(*)

4.5

_

_

-

126.0

4.5

250

Mar.

(*)

3.5

108.5

3.5

215

Apr.

3.9

IT?

4.5

4.5

4.5

4.3

4.2

4.1

4.2

4.3

4.2

4.2

4.3

4.4

5.0

6.4

6.0

*5.8

6.0

6.6

6.8

7.4

8.5

9.9

10

12

11

13

T2

12

-

198.2

6.61

393

May

10

9.0

T3

11

17

23

23

*23

23

19

21

28

28

25

23

29

35

29

32

37

37

37

48

53

53

52

58

76

74

71

_79

1,092.9

35.3

2,170

June

68

52

46

39

34

32

*34

36

36

36

32

32

*38

46

*59

71

*100

152

132

*146

164

T34

104

97

111

130

136

140

130

115

-

2,482

82.7

4,920

July

107

109

119

*122

109

104

128

m

100

*87

83

88

*83

77

70

74

80

59

59

68

74

59

47

41

38

36 35

36

36

36

40

2,316

74.7

4,590

Aug.

36

35

37

36

46

39

36

32

29

28

27

25

25

24

23

*23

22

21

20

23

23

21

20

18

18

16

16

15

T5

16

15

780

25.2

1,550

Sept.

13

13

12

12

11

10

9.0

8.8

8.8

8.2

7.9

7.9

7.4

*7.1

7.1

6.8

6.8

6.6

7.1

6.6

8.2

7.7

7.1

6.8

6.6

 STo 6.0

6.0

7.7

6.6

-

245.8

8.19

488

Calendar year 1950: Max 130 Mln 0.7 Mean 15.8 Ac-ft 11,470

Water year 1950-50: Max 164 Mln 0.7 Mean 22.0 Ac-ft 15,950

Peak discharge (baae. 100 cfs). June 21 (3:30 a.m.) 210 ofs (2.35 ft); June 27 (9 p.m.) 180 cfs 

(2.10 ft); July 7 (7:30 p.m.) 184 cfs (2.64 ft)j July 16 (9 p.m.) 136 ofs (2.01 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 9 to Apr. 17 (stage-discharge relation affected by Ice during 

most of period); discharge estimated on basis of 5 discharge measurements, weather records, and records for nearby stations.
46 BLUE RIVER BASIN

Rock Creek near Dillon, Colo.

Location. Lat 39°43'25", long. 106°07'4011 , in NE£ see, S, T. 4 S., R. 78 W., on left banl:

 bUU Tt upstream from bridge on State Highway 9, a quarter of a mile upstream from mouth, 

and 9 miles northwest of Dillon.

Drainage area. 15.8 sq mi.

Records available. July 1942 to September 1951.

Sage. Water-stage recorder. Datum of gage is 8,502.52 ft above mean sea level, unadjusted.

 Fri:r to Sept. 13, 1950, at site 500 ft downstream at datum 28.76 ft lower.

Average discharge. 9 years, 24.9 cfs.

Extremes. Maximum discharge during year, 260 cfs June 18 (gage height, 4.35 ft); minimum

 daily, 2.9 cfs Feb. 14.

1942-51: Maximum discharge, that of June 18, 1951; minimum daily discharge determired, 2.2 cfs Apr. 13, 17, 1945.

Remarks.--Records good except those for periods of ice effect, which are fair. A few small

 diversions for irrigation of hay meadows above station.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 2-15)

2.3

2.4

2.5 

2.7

3.3 

4.3

6.0

15

110

194

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.2

8.4

¥75

6.8

6.4

*6.0

5.7

5.8

5.7

5.7

5.5

5.3

5.3

5.2

5.3

5.3

5.3

5.5

5.2

5.2

5.2

5.2

5.0

5.0

4.6

4.8

4.6

4.6

4.6

4.5

TTS

171.7

5.54

341

Nov.

4.8

4.8

5.8

573

5.0

5.0

5.2

*5.3

5.0

4.6

4.5

4.5

4.7

4.8

5.0

4.8

4.8

4.6

5.2

5.2

5.8

5.5

5.0

5.0

4.8

4.8

4.8

5.0

4.6

4.5

148.7

4.96

295

Dec.

4.6

4.2

4.5

4.5

4.2

4.0

475

ITS

4.5

4.5

4.5

4.5

* .5

.5

.3

.3

.2

.3

.2

.2

.2

.2

.2

.5

.6

.6

.3

.1

.2

.2

.2

135.1

4.36

268

Jan.

4.2

4.2

4.2

4.2

4.2

4.2

3.8

3.6

3.8

4.0

*4.3

ITS

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

4.0

3.9

3.9

4.0

3.6

3.5

122.0

3.94

242

Feb.

3.3

3'. 5

3.7

3.8

3.9

3.7

3.4

3.2

3.2

3.3

3.4

3.4

3.0

2.9

*3.0

3.1

3.2

3.3

3.3

3.2

3.1

3.2

3.4

3.4

3.2

3.3

3.4

3.2

_

_

-

93.0

3.32

184

Mar.

3.5

ITS

3.3

3.3

3.3

3.4

3.5

3.5

*3.7

3.7

3.5

3.5

3.6

3.7

3.8

3.7

3.6

3.5

3.5

3.6

3.7

3.6

3.6

3.7

4.0

4.0

Apr.

.3

.6

.£

.6

 *

.5

' 73

.5

.3

* .2

.4

.0

.3

<4

.7

.5

.0

.4

7.6

8.0

10

11

12

12

4.11 13

Ttol 15

3.9 16

3.81 TJ

4.0

112.9

3.64

224

-

215.3

7.18

427

May

10

ID- 9.2

13

19

28

33

*36

33

27

36

48

50

44

42

50

52

53

62

76

74

76

94

90

83

83

106

124 m

110

112

1,796.2

57.9

3,560

June

100

72

58

*50

11

48

58

71

70

71

61

*53

61

83

*100

131

*146

*187

T55

*162

174

160

116

110

112

118

129

143

140

133

-

3,114

104

6,180

July

120

120

131

*T?4"

123

118

128

118

101

*94

83

90

88

84

84

89

102

90

90

95

101

88

74

70

65

65

68

74

60

57

55

2,852

92.0

5,660

Aug.

56

55

60

58

56

51

51

45

38

33

32

32

31

30

29

*26

27

26

25

32

46

35

27

26

24

21

20 55

21

27

22

1,082

34.9

2,150

Sept.

19

T5

17

16

15

14

14

13

12

12

12

14

*12

10

9.6

9 2

8 8

8 4

8 8

8 0

12

11

10

8.8

8.0

7.6

7.2

772

14

12

-

348.6

11.6

691

Calendar year 1950: Max 134 Min - Mean 21.8 Ac-ft 15,760

Water iter year year 1950-51: 1950-51: Max Max 187 187 Min Min 2.9 2.9 Mean Mean 27.9 27.9 Ac-ft Ac-ft 2O,220 2O,220

Peak discharge (base. 160 cfs). June 18 (1:30 a.m.) 26O efs (4.55 ft); June 21 (2;3O a.m.) 248 cfs 

4.21 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 5, 9-13, 

an. 3O to Mar. 31, Apr. 11-13.

-Dec. 2-6, 17, 18, 27-30, Jan. 7-10,
BLUE RIVER BASIN 47

Boulder Creek near Dillon, Colo.

Location. Lat 39°44'15", long. 106°08'05", in NWi sec. 4, T. 4 S., R. 78 W., on left bank 

SOTTTt upstream from bridge on State Highway 9, 500 ft upstream from mouth, and 10 

miles northwest of Dillon.

Drainage area. 9.7 sq mi , approximately.

Records available. July 1942 to September 1951 (discontinued).

Gage.--Water-stage recorder. Datum of gage is 8,456.79 ft above mean sea level, unadjusted. 

Prior to Apr. 22, 1943, staff gage at site 20 ft downstream at datum 2.50 ft lower.

Average discharge. 9 years, 13.8 cfs.

Extremes. Maximum discharge during year, 232 cfs June 21 (gage height, 3.47 ft), from 

rating curve extended above 120 cfs; minimum daily, 0.2 cfs Oct. 17 to Nov. 1.

1942-51: Maximum discharge, 255 cfs June 21, 1943 (gage height, 2.97 ft), from 

rating curve extended above 130 cfs; maximum gage height, 3.47 ft June 21, 1951; no flow 

at times.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Nine small diversions above station for irrigation of about 40 acres of 

hay meadows below station.

Rating tables, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 5-8, Sept. 14-29)

Oct. 1 to June 17 June 18 to Sept. 30

1.6

1.7

1.8

1.9

2.0

.3

.8

1.5

3.2

2.1

2.2 

2.4 

2.9 

3.2

5.8

9.0

20

70

113

1.8

1.9

2.0 

2.2

3.0

4.8

7.4

15

2.4 

2.6 

2.9 

3.2

27

47

94

153

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Oct.

0.5

.6

75

.4

.4

*.4

.3

.3

.4

.3

.3

.3

.3

.3

.3

.3

.2

75

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

8.9

0.29

Ac-ftl 18

Nov.

~75 0.2

.3

.5

.4

.6

.6

.6

1.2

3.0

*b4.6

*bT7S~

b2.5

bl.3

1.5

1.7

1.7

1.5

1.3

1.1

1.1

1.1

1.0

1.2

1.7

1.2

1.2

1.4

1.3

1.2

41.6

1.39

83

Dec.

(*)

1.0

31.0

1.0

61

Jan.

(*)

0.9

27.9

0.9

55

Feb.

(*)

0.7

_

_

-

19.6

0.7

39

Mar.

(*)

0.9

27.9

0.9

55

Apr.

1.2

T73

1.4

1.4

1.3

1.2

1.2

1.3

1.4

1.7

1.6

1.7

1.9

2.1

2.4

2.7

275

*2.4

2.0

2.0

2.0

1.8

2.0

2.0

2.0

1.8

1.7

2.4

2.5

1.5

54.4

1.81

108

May

1.1

T75

3.0

3.2

6.1

9.0

10

*12

12

10

10

12

15

14

13

17

20

18

23

24

25

26

34

35

35

37

45

56

5?

51

54

683.9

22.1

1,360

June

48

40

37

32

30

27

*25

30

30

32

32

31

31

41

56

84

107

134

122

*126

157 T2"5

98

92

103

99

98

92

84

82

2,132

71.1

4,230

July

*79

82

82

86 55

74

82

79

71

67

*64

75

69

60

58

58

72

58

55

58

67

61

45

39

35

33

35

38

33

29 J2

1,856

59.9

3,680

Aug.

29

26

30 "25

25

22

19

19

17

15

20

19

19

18

16

*14

9.9

7.1

5.1

5.8

11

9.0

7.4

6.4

6.8

5.8

5.4

5.0

4.8

770

7.6

437.1

14.1

867

Sept.

6.6

T7S

5.6

5.0

4.5

4.5

4.5

4.0

3.8

3.6

3.2

3.0

*4.0

3.5

3.4

3.2

3.2

3.4

3.4

3.4

3.9

3.9

3.4

3.0

2.8

2.5

2.2

1.6

1.3 575

108.9

3.63

216

Calendar year 1950: Max 102 Min 0.2 Mean 10.7 Ac-ft 7,780

Water year 1950-51 : Max 157 Min 0.2 Mean 14.9 Ac-ft 10,770

Peak discharge (base. 100 efs). June 18 (2:30 a.m.) 210 cfs (3.43 ft); June 21 (6 a.m.) 232 cfs 

(3.47 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Mote. Mo gage-height record Nov. 9, 10, Nov. 30 to Apr. 17 (stage-discharge relation affected by 

Ice during part of periods), May 9 to June 6, Aug. 22 to Sept. 13, Sept. 30j discharge estimated on 

basis of 5 discharge measurements, weather records, and records for nearby stations.
48 BLUE RIVER BASIN

Slate Creek near Dillon, Colo.

Location. Lat 39°46'55", long. 106°09'45", in NE£ SBC. 19, T. 3 S., R. 78 W., on left 

bank a quarter of a mile upstream from State Highway 9, 2,000 ft upstream from mouth, 

and 13 miles northwest of Dillon.

Drainage area. 16.8 sq mi.

Records available. July 1942 to September 1951.

Gage. Water-stage recorder. Datum of gage is 8,227.70 ft above mean sea level, unadjusted. 

 n?rior to May 3", 1943, staff gage at site a quarter of a mile downstream at different datum.

Average discharge. 9 years, 16.1 cfs.

Extremes. Maximum discharge during year, 246 cfs June 21 (gage height, 2.49 ft), from rating curve extended above 130 cfs; minimum daily, 0.1 cfs Oct. 1, 23-31.

1942-51: Maximum discharge, 288 cfs May 22, 1945 (gage height, 2.66 ft), from rating 

curve extended above 130 cfs; minimum daily, 0.1 cfs Sept. 30, Oct. 1, 23-31, 1950.

Remarks. Records good except those for period of no gage-height record, which are poor. 

Diversions above station for irrigation of about 40 acres of hay meadow upstream and 

about 450 acres downstream along Blue River, Squaw Creek, and Brush Creek.

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used June 18, July 28 to Sept. 30)

0.6 

.7 

.8 

.9

1.0

3.7 

6.8

1.1

1.2 

1.4 

1.8 

2.2

19

44

107

180

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

e

7

8

9

10

11

12

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.I

TS

1.1 Tn

1.0

*.9

.8

.6

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

12.1

0.39

24

Nov.

~TS O.2

.2

.2

.2

.2

.2

.5

1.5

5.2

*5.6

471

2.9

1.6

2.9

3.1

3.5

3.1

2.9

3.5

4.0

4.3

 4.3

3.3

4.6

4.9

3.5

4.6

4.0

3.5

-

83.0

2.77

165

Dec.

(*)

2.4

74.4

2.4

148

Jan.

(*)

2.2

68.2

2.2

135

Feb.

(*)

1.6

_

_

-

44.8

1.6

89

Mar.

(*)

2.0

62.0

2.0

123

Apr.

2.8

3T5

3.3

3.3

3.2

3.1

3.1

3.3

3.7

4.1

3.8

4.3

5.O

6.0

7.2

8.8

8.6

8.4

*8..2

8.2

9.2

9.7

11

12

13

15

14

14

18

H

£30.3

7.68

457

May

10

8,2

&TS

12

18

23

26

*26

18

19

19

24

29

28

24

27

31

31

38

46

50

50

59

58

48

53

68

93

~52 102

97

1,236.4

39.9

2,450

June

88

7O

47

38

22

14

*11

T2

13

17

18

12

15

22

29

56

85

*156

124

*117

174 m72

60

62

84

80

82

62

59

1,815

60.5

3,600

July

59

68

72

79

79

59

70

72

56

52

*41

53

50

44

43

48

74

52

53

58

70

68

47

4O

33

24

TF

48

47

58

90

1,734

55.9

3,440

Aug.

77

71

82

80

93

68

54

47

38

34

31

31

31

30

30

28

27

*23

23

26

41

33

28

24

26

23

20

19

18

75

29

1,211

39.1

2.40O

Sept.

23

TS

15

13

11

11

11

9.7

9.7

9.2

7.8

6.8

*9.7

8.7

8.2

7.8

7.3

6.8

6.8

6.5

9.7

9.7

8.7

7.3

6.8

6.5

6.2

5.9

15

293.8

9.79

583

Calendar year 195O: Max 104 Min O.I Mean 12.0 Ac-ft 8.66O

Water year 1950-51: Max 174 Min o.l Mean 18.8 Ac-ft 13,610

* Discharge measurement made on this day.

Note. No gage-height record Nov. 29 to Apr. 18 (stage-discharge relation affected by ice during 

part of period); discharge estimated on basis of 4 discharge measurements, weather records, and records for nearby stations.
BLUE RIVER BASIN 49

Blue River above Green Mountain Reservoir, Colo.

Location. Lat 39°49' I 55", long. 106°13'25",. in sec. 34, T. 2 S., R. 79 W., on left bank 

Just upstream from high-water line of Green Mountain Reservoir, 1 mile downstream from 

Brush Creek, and 18 miles southeast of Kremmling.

Drainage area. 514 sq mi.

Records available.--May 1944 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,946.56 ft above mean sea level, unadjusted.

Average discharge.--? years, 489 cfs.

Extremes. Maximum discharge during year, 4,520 cfs June 21 (gage height, 4.68 ft); minimum 

daily, 70 cfs Feb. 2.

1944-51: Maximum discharge, that of June 21, 1951; maximum gage height recorded, 

6.75 ft Dec. 16, 1949 (ice Jam); minimum daily discharge, 69 cfs Dec. 28, 1944, Jan. 4, 

1945.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

whTch are fair. Many small diversions for irrigation of about 1,740 acres of hay 

meadows above station.

Rating tables, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per seqond)

Oct. 1 to Jan. 31 Feb. 1 to Sept. 30

0.9 

1.2

110

194

1.1 

1.5 

2.0

170

353

665

3.0 

4.0 

4.5

1,650

3,190

4,160

Discharge, in cubic feet per second, water year October 1950 to' September 1951

Day

1

2

3 

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

160

167

170

TBT

160

157 

*154

152

152

149

149

146

146

143

140

140

140

140

140

138

135

135

135

132

132

132

128

128

128

ill T25

4,445

143

8,820

Nov.

128

128

117 

T5?

128

138 

138

146

143

125

b!30

*b!55

b!60

b!55

b!45

b!40

b!45

157

157

154

167

TBT

157

146

149

146

146

143

140

138

4,320

144

8,570

Dec.

146

bT30

135 

b!35

b!35

120 

T?0~ 105

130

120

120

120

125

125

120

*120

120

125

130

130

120

120

120

120

120

120

115

110

110

110

115

3,791

122

7,520

Jan.

110

100

105 

110

110

98 

82

 55 76

84

86

*82

82

90

100

115

T20" 120

120

115

105

110

115

120

115

110

115

120

120

120

110

3,245

105

6,440

Feb.

B8

70

75 

88

100

115 

125

125

120

120

130

T5B" 135

130

*120

110

110

120

125

125

125

125

130

130

125

120

120

115

_

_

-

3,259

116

6,460

Mar.

110

110

110 

105

Tff5

110 

115

120

*120

120

110

110

115

120

125

130

120

115

120

130

130

125

125

130

130

130

120

120

120

125

130

3,705

120

7,350

Apr.

125

T25

130 

140

140

145 

145

140

140

135

135

135

140

150

165

180

185

195

*199

206

248

253

273

314

309

353

364

422

482

TSZ

6,525

218

12,940

May

382

342

"339" 331 

512

665 

743

815

807

*714

735

869

914

851

791

869

981

1,010

1,090

1,330

1,410

1,390

1,510

1,650

1,500

1,580

1,830

2,320

2,510

2,460

2.620

35,930

1,159

71,270

June

2,560

2,120

1,880 

1,610

1,490

1.590 

1,420

*1,540

1,610

1,650

1,600

1,550

1,630

*1,780

1,970

2,410

*2,960

3,800

*3,610

3,840

4.080

3,550

2,980

2,770

2,820

3,050

3,010

2,980

2,810

2,690

-

73,160

2,439

145,100

July

2.590

2,5lO

2,530 

2,540

2,480

2,220 

2,290

2,240

2,020

1,860

*1,700

1,690

1,600

1,520

1,460

1,480

1,720

1,540

1,460

1,520

1,580

1,440

1,270

1,210

1,100

1,020

1.010

1,190

1,260

1,180

1,220

52,450

1,692

104,000

Aug.

1,160

1,100

1,200 

1,166

1,120

990 

905

833

791

735

686

658

630

595

576

556

543

530

512

569

644

616

582

543

543

500

470

452

440

TKJ

452

21,561

696

42,770

Sept,

428

4TJ4"

382 

364

348

336 

320

314

298

298

293

298

*298

283

268

253

248

244

244

240

273

278

268

263

248

235

223

'£"4"0" 214

248

-

8,651

288

17,160

Calendar year 1950: Max 2,850 Mln 71 Mean 407 Ac-ft 294,500

Water year 1950-51: Max 4,080 Mln 70 Mean 606 Ac-ft 438,400

ischarge (base, 2.600 cfs). May 21 (2 a.m.) 2,890 efs (5.83 ft); June 21 (5 a.m.) 4,520 cfs 

), June 26 (2 a.m.) 3,360 cfs (4.O9 ft).

Peak disc 

(4.68 ft),-

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 6 to Apr. 18 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 4 discharge measurements, weather records, and records for nearby stations.
50 BLUE RIVER BASIN

Black Creek above Green Mountain Reservoir, Colo.

Location. Lat 39°51'15", long. 106°15'10", in NEtj sec. 29, T. 2 S., R. 79 W., on right 

 h'arik"~30 ft upstream from bridge on State Highway 9, 400 ft upstream from high-water line 

of Green Mountain Reservoir, and 16 miles southeast of Kremmling.

Drainage area.--18.2 sq mi.

Records available.--May 1944 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,960 ft (from topographic map).

Average discharge.--? years, 32.7 cfs.

Extremes.--Maximum discharge during year, 390 cfs June 21 (gage height, 1.55 ft), from rating curve extended above 180 cfs; maximum gage height, 2.20 ft June 18; minimum discharge not determined.

1944-51: Maximum discharge, that of June 21, 1951; maximum gage height, 2.46 ft Jun? 

21, 1947; minimum daily discharge, 1.4 cfs Dec. 15-20, 1944.

Remarks.--Records poor. Small diversions above station for irrigation of about 20 acres o*1 

nay meadows below station.

Rating tables, water year 1950-51, except period of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used June 18 to July 18)

Oct. 1 to June 17 June 18 to Sept. 30

3.5

8.0

18

0.9 

1.4 100

180

-0.3 7

-.2 8.5

-.1 12.6

0.0 17

0.3 52

.8 146

1.6 348

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

25

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

6.5

7.2

7.2

7.2

7.0

6.5

*6.0

6.0

5.8

5.5

5.5

5.5

5.8

5.3

6.2

6.5

5.8

6.0

5.5

5.1

 S75- 7.5

5.3

4.9

4.9

4.7

4.5

4.9

4.5

"O3.9

177.1

5.71

351

Nov.

3.9

4.3

4.1

3.9

3.7

4.1

4.5

6.0

5.5

3.6

4.5

*4.9

4.5

4.7

4.9

5.3

5.3

4.9

5.3

5.1

 6.2

6.0

5.0

5.0

5.6

6.6

7.0

775

6.4

6.0

153.8

5.13

305

Dec.

(*)

5.5

170.5

5.5

338

Jan.

(*)

5.0

155.0

5.0

307

Feb.

(*)

3.0

_

_

-

84.0

3.0

167

Mar.

(*)

3.0

93.0

3.0

184

Apr,

"375 3.4

3.8

4.0

4.0

3.8

3.6

3.4

3.8

4.0

3.8

3.6

3.5

4.2

4.6

5.4

4.6

*6.8

7.5

7.5

8.4

8.9

8.4

9.4

11

11

11

12

17

T6

201.9

6.73

400

May

12

10

9.4

978

12

23

28

30

29

*23

20

29

33

30

24

31

43

35

47

81

78

65

85

86

57

65

114

151

T55

129

137

1,676.2

54.1

3,320

June

127

86

60

42

32

30

*33

46

55

67

75

50

49

78

*97

137

172

*294

260

255

"552" 331

*155

124

153

199

197

192

157

*139

-

3,944

131

7,820

July

155

170

197

204

206

202

204

202

182

166

133

*175

168

155

153

*159

190

164

157

166

180

161

114

101

98

94

107

153

135

109

126

4,882

157

9,680

Aug.

109

114

148

TTT

135

92

80

74

70

76

68

62

58

56

56

44

*41

39

36

46

50

62

47

42

44

36

34

33

33

62

60

2,018

65.1

4,000

Sept.

45

35

33

32

33

33

29

20

20

15

14

21

*16

11

10

8.8

8.5

8.5

8.5

8.5

10

12

11

10

8.8

8.8

8.0

30~7.6

62

-

578.0

19.3

1,150

Calendar year 1950: Max 188 Mln - Mean 28.3 Ac -ft 20 ,-520

Water year 1950-51: Max 331 Mln - Mean 38.7 Ac-ft 28,020
BLUE RIVER BASIN 51

Otter Creek above Green Mountain Reservoir, Colo.

ft (from topographic map).

Location. Lat 39°51'10, long. 106°16'00", in Mi sec. 29, T. 2 S., R. 79 W., on right bank 

at State Highway 9, 1,000 ft upstream from high-water line of Green Mountain Reservoir, 

and 16 miles southeast of Krernmling.

Drainage area.--9.4 sq mi, approximately. 

Records available.--May 1944 to September 1951. 

Gage.--Water-stage recorder. Altitude of gage is 7,J 

Average discharge.--? years, 5.15 cfs.

Extremes. Maximum discharge during year, 100 cfs June 21 (gage height, 1.59 ft), from 

rating curve extended above 50 cfs; minimum not determined, occurred during period of 

no gage-height record.

1944-51: Maximum discharge, that of June 21, 1951; maximum gage height, 2.55 ft Apr. 

23, 1948; minimum daily discharge, 0.1 cfs on many days during December 1944 and January 

1945.

Remarks.--Records fair except those for periods of ice effect or no gage-height record,

which are poor. Diversions for irrigation of about 100 acres of hay meadows above station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.4 

.5

.6

0

1.6 

5.4

0.7 

1.0 

1.4 78

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ao

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft^

Oct.

1.0

1.3 *T7T

l.i

l.i

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

.8

75

.8

1.0

.8

.8

.8

.8

.8

.8

.8

.8

.8

29.2

0.94

58

Nov.

0.8

T7C

.8

1.0

1.0

1.0

1.0

1.1

1.0

.9

.9

*.9

.9

1.0

1.1

1.0

1.0

1.1

1.4

1.3

1.3

1.3

1.1

1.1

1.5

1.6

1.7

T7S

1.6

1.7

-

34.7

1.16

69

Dee.

(*)

1.5

46.5

1.5

92

Jan.

(*)

1.0

31.0

1.0

61

Feb.

0.9

(*)

_

_

-

25.2

0.9

50

Mar.

(*)

1.3

40.3

1.3

80

Apr.

1.5

T7S

1.6

1.6

1.6

1.6

1.5

1.5

1.6

1.7

1.7

1.6

2.1

2.5

3.0

3.5

3.1

*3.5

3.9

3.9

4.3

3.5

3.9

4.6

T75

4.3

3.5

4.3

4.6

3.9

-

85.8

2.86

170

May

3.1

2.3 573

3.1

4.3

5.4

5.9

*6.3

5.9

5.0

6.3

6.3

6.3

6.3

7.2

9.1

9.5

10

12

15

20

20

20

20

18

21

26

 5528

26

26

381.5

12.3

757

June

24

19

16

13

11

10

*9.5 "STs

9.5

12

12

11

*10

12

15

19

30

*48

35

37

77

52

36

27

26

27

26

22

22

18

-

695.5

23.2

July

17

TS

17

17

16

15

15

15

12

10

8.6

*8.2

8.2

7.7

7.7

7.7

9.1

8.6

7.7

7.7

8.6

10

8.6

6.8

5.9

5.9

6.8

9.1

9.5

8.6

8.2

319,2

10.3

1,380 633

Aug.

8.2

8.2

10

9.1

11

9.1

7.2

6.3

5.4

5.0

5.0

4.3

3.5

3.1

3.1

2.4 *77T

2.7

2.4

4.3

7.7

5.0

4.3

3.9

3.5

3.1

2.7

2.4

3.1

7.2

5.9

162.2

5.23

322

Sept.

3.9

3.1

2.7

2.4

2.4

2.0

1.6

1.6

1.6

1.6

1.4

2.0

*1.6

1.4

1.3

1.3

1.1

1.1

1.3

1.1

1.6

2.0

1.4

1.6

1.1

1.1

T76" 1.0

3.9

3.9

-

55.1

1.84

109

Calendar year 1950: Max 43 Mln - Mean 4.15 Ac-ft 3,010

Water year 1950-51: Max 77 Mln - Mean 5.22 Ac-ft 3,780

Peak discharge (base, 50 efs). May 28 (8 p.m.) 32 cfs (0.95 ft); June 18 (3:30 a.m.) 69 cfs 

(1.32 ft}; June 21 (5 a.m.) 100 cfs (1.59 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 9-17, Nov. 25 to Dec. 9. No gage-height record Dec. 10 to Apr. 17 (stage-discharge relation affected by ice during most of period); discharge 

estimated on basis of 3 discharge measurements, weather records, and records for stations on nearby 

streams.
52 BLUE RIVER BASIN

Cataract Creek above Green Mountain Reservoir, Colo.

Location. Lat 39°51'00", long. 106°17'25", in NE-j sec. 25, T. 2 S. , R. 80 W. , on right 

DanK at Lawson Ranch, 1 mile upstream from high-water line of Green Mountain Reservoir, 

and 16 miles southeast of Kremmling.

Drainage area. 14.4 sq miles (revised).

Records available. May 1944 to September 1951.

gage.--Water-stage recorder. Altitude of gage is 8,320 ft (from topographic map).

Average discharge.--? years, 21.1 cfs.

Extremes.--Maximum discharge during year, 416 cfs June 21 (gage height, 2.69 ft), from 

rating curve extended above 250 cfs; maximum gage height, 2.75 ft June 21; minimum not 

determined.

1944-51: Maximum discharge, that of June 21, 1951; maximum gage height, that of 

June 21, 1951; minimum daily discharge, 0.2 cfs at times during 1944.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Small diversions for irrigation of hay meadows above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to June 21

0.4 

.5

1.0 

1.3

0.9

1.9

5.8

15

30

1.5 

1.7 

2.1 

2.7

50

83

200

420

June 21 to Sept. 30

0.7 1.6 1.5 37

.8 3.0 1.8 70

.9 5.0 2.0 115

1.0 8.0 2.4 245

1.2 17

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

W

11

12

13

14

15

16

n

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.3

4.8

4.3

4.3

4.1

*4.5

3.9

3.0

3.2

3.2

3.0

3.0

2.8

2.6

2.4

2.8

2.4

2.1

1.8

1.8

1.7

1.7

1.6

1.5

1.4

1.4

1.5

1.2

1.3

.9

175

79.5

2.56

158

Nov.

1.0

1.4

.8

79

1.1

1.2

1.5

1.6

1.2

1.4

1.6

*1.5

1,6

1.5

1.7

1.4

1.8

1.6

2.0

2.4

2.4

1.8

2.4

2.2

2.0

2.2

2.2

2.1

2.2

1.9

50.6

1.69

100

Dec.

(*)

1.7

52.7

1.7

105

Jan.

(*)

2.2

68.2

2.2

135

Feb.

(*)

2.0

_

_

-

56.0

2.0

111

Mar.

(*)

1.5

46.5

1.5

92

Apr.

1.8

TT8

2.0

2.2

2.4

2.3

2.2

2.1

2.3

2.4

2.3

2.2

2.7

3.0

3.5

3.9

*3.7

4.3

5.4

6.6

8.1

7.6

7.1

9.0

8.4

9.3

8.4

9.6

11

11

148.6

4.95

295

Hay

9.3

7.9

7.1

T7S 11

17

18

*21

21

18

18

22

25

23

21

25

34

29

38

46

54

58

88

77

61

58

79

110

128 10"2"

105

1,339.2

43.2

2,660

June

88

68

53

40

35

31

*34

41

48

50

51

*42

41

56

68

96

140

*194

140

134

311

238

166

139

154

175

172

157

136

*110

3,208

107

6,360

July

115

115

124

130

12T

108

121

121

100

92

70

*82

80

69

64

67

69

66

64

64

67

71

72

52

45

43

47

56

58

51

50

2,448

79.0

4,860

Aug.

49

49

534~8

50

41

35

31

27

26

23

20

17

15

15

12

*10

8.0

7.1

9.6

22

17

12

11

11

11

8.0

6.8

77T

12

12

675.9

21.8

1,340

Sept.

12

11

7.7

6.8

6.8

6.2

4.8

4.8

4.4

4.0

4.0

4.6

*4.4

4.6

3.6

3.2

2.9

2.6

2.9

3.0

3.6

3.8

3.6

2.9

2.7

2.6

2.3

2.0

TTff

8.8

141.2

4.71

280

Calendar year 1950: Max 187 Mln - Mean 16.8 Ac -ft 12,150

Water year 1950-51: Max 311 Mln - Mean 22.8 Ac-ft 16,500

Peak discharge (base, 180 cfs). Ka

(2.20 ft); June 21 110:30 a.m.) 416 c

y 29 (12:30 p.m.) 182 cfs (2.04 ft); June 18 (7 a.m.) 235 cfs 

fs (2.69 ft).

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov. 15, 16, Nov. 19 to Dec. 5. Ho gage-height record Dec. 6 to Apr. 16 (stage-discharge relation affected by Ice during part of period) July 19 to 

Aug. 16; discharge estimated on basis of 4 discharge measurements, weather records, and records for 

nearby streams.
BLUE RIVER BASIN 53

Elllott Creek feeder canal to Green Mountain Reservoir, Colo.

Location.--Lat 39°52'10", long. 106°20'00", in SE£ sec. 15, T. 2 S., R. 80 W., on left

bank at entrance to concrete flume 700 ft upstream from high-water line of Green Mountain 

Reservoir, 0.9 mile downstream from head gate, and 14 miles southeast of Kremmling.

Records available.--May 1944 to September 1951 (no winter records in 1947).

Gage. Water-stage recorder and concrete control. Datum of gage is 8,054.92 ft above mean 

sea level (levels by Bureau of Reclamation).

Average discharge.--6 years (1944-46, 1947-51), 14.3 cfs.

Extremes.--Maximum discharge during year, 277 cfs June 18 (gage height, 3.80 ft); minimum 

not determined.

1944-51: Maximum discharge, that of June 18, 1951; no flow at times during winter 

months.

Remarks.- Records good except those for periods of ice effect or no gage-height record, 

 which are fair. Elliott Creek feeder canal diverts flow of Elliott Creek to Green 

Mountain Reservoir except during extreme high water. Drainage area of Elliott Creek 

above head gate of canal, 15.4 sq mi. Diversions above station for irrigation of about 

260 acres of hay meadows below station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.1 0.8

.2 2.4

.3 4.5

.4 7.5

0.6 16

1.0 38

2.0 108

3.4 234

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

3.9

*3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.4

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.0

3.0

3.0

3.0

3.0

2.8

278

2.8

2.8

2.8

2.8

102.2

3.30

203

Nov.

2.8

2.S

2.6

2.2

2.4

2.4

2.4

2.4

2.1

2.0

2.1

2.2

*2.4

2.4

2.4

2.3

2.1

2.1

2.1

2.1

2.1

2.0

1.9

1.9

1.8

1.8

1.8

1.8

1.8

1.8

-

65.0

2.17

129

Dec.

(*)

1.6

49.6

1.6

98

Jan.

(*)

1.3

40.3

1.3

80

Feb.

0.8

(*)

'

-

-

22.4

0.8

44

Mar.

(*)

1.0

31.0

1.0

61

Apr.

1.2

*1.9

2.4

2.6

3.0

3.0

2.8

3.0

3.7

3.7

4.1

3.7

4.1

4.1

4.5

-

65.6

2.19

130

Hay

3.7

3.2

3.7

3.9

5.1

4.8

5.1

*5.4

5.7

6.0

6.0

6.0

6.3

6.0

6.6

13

21

22

27

37

45

48

49

53

54

52

59

118

136

123

133

1,067.5

34.4

2,120

June

106

90

85

51

*30

28

29

32

36

51

62

46

*46

70

87

*119

165

*219

171

161

232

182

135

117

138

159

152

134

111

98

3,142

105

6,230

July

104

91

101

102

95

77

79

66

54

38

24

28

32

*25

22

20

20

11

7.9

7.2

7.9

7.5

6.0

5.1

57T

5.4

6.0

6.9

6.3

6.3

6.3

1,072.9

34.6

2,130

Aug.

6.3

6.6

9.1

8.7

9.5

9.9

9.1

7.9

7.5

8.3

8.3

7.9

7.5

7.2

6.9

6.6

*6.6

6.0

4.8

6.6

5.4

5.1

4.8

4.8

4'. 5

4.3

4.3

4.3

4.8

5.7

5.4

204.7

6.60

406

Sept.

5.1

5.7

6.6

6.3

6.3

6.3

6.0

6.6

6.3

6.6

6.9

*6.6

6.3

6.0

6.0

6.0

6.0

6.0

6.6

6.0

7.2

673

6.0

5.7

5.7

5.4

5.4

5.4

4.8

4.5

180.4

6.01

358

Calendar year 1950: Max 174 Mln - Mean 13.1 Ac-ft 9,480

Water year 1950-51: Max 232 Min . Mean 16.6 Ac-ft 11,990

256684 O - 53 - 5
54 BLUE RIVER BASIN

Green Mountain Reservoir near Kremmling, Colo.

Location.--Lat 39°52'45", long. 106°19'15", in NE^ sec. 15, T. 2 S., R. 80 W., at Green 

Mountain Dam on Blue River, 0.6 mile upstream from Elliott Creek,and 13 miles southeast of Kremmling.

Records available. November 1942 to September 1951.

Gage.--Mercury gage, 

tion bench mark).

Datum of gage is 7,800 ft above mean sea level (Bureau of ReclamaGage heights have been reduced to elevations above mean sea level.

Extremes.--Maximum contents observed during year, 147,600 acre-ft July 17 (elevation, 

7,950.34 ft); minimum observed, 24,070 acre-ft May 15 (elevation, 7,856.28 ft). 

1942-51: Maximum contents observed, 148,600 acre-ft July 3, 1947 (elevation, 

7,950.81 ft); minimum observed, 40,690 acre-ft Apr. 25, 1943 (elevation, 7,877.85 ft); 

no storage prior to Nov. 16, 1942.

Remarks.--Reservoir is formed by an earth- and rock-fill dam. Dam completed in November 

1942. Capacity of reservoir, 146,900 acre-ft between elevations 7,800 ft (sill of 

outlet gate) and 7,950 ft (top of radial spillway gates). Dead storage, 7,760 acre-ft. 

Water is used for power development and storage for replacement of water diverted to 

South Platte River basin during late irrigation season. Figures given herein are of 

usable contents.

Cooperation.--Records furnished by Bureau of Reclamation.

Capacity table (elevation, In feet, and usable contents, In acre-feet) 

(Prepared by Bureau of Reclamation from surveys and maps of that organization)

7,800

7,805

7,810

1,180

2,520

7,820 5,710

7,840 14,560

7,870 34,040

7,9OO 64,020

7,930 108,100

7,960 169,100

Usable contents, In acre-fe , water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

119,200

118,800

118,500

118,200

118,100

118,000

118,300

118,500

118,000

117,600

117,600

117,700

118,700

117,900

118,200

118,100

118,100

118,400

118,500

118,600

118,300

118,500

118,600

118,700

118,300

117,800

117,300

117,200

117,300

117,200

117,300

Nov.

117,400

117,200

116,800

117,000

117,300

116,900

116,700

115,600

114,900

114, 400

114,400

114, 700

114,400

114,500

114,700

114,400

114,100

114,300

114,700

113,900

113,300

113,200

113,500

113,400

113,600

113,900

113,600

113,200

113,200

113,100

-

Dec.

113,300

113,500

113,800

113,600

113,400

113,100

112,900

112,800

112,400

112,600

112,600

112,000

111,400

110,900

110,400

110,300

109,800

109 , 200

108,600

108,000

107,400

106,800

106,700

106 , 500

106,500

105,900

105,300

104,700

104,000

103,800

103,700

Jan.

103,600

102,900

102,300

102,000

101,900

101,700

101,200

100,500

99,780

99,190

98,480

97,860

97,490

97,280

96,340

95,440

94,510

93,490

92,480

92,030

91,66O

90,730

89,870

88,940

87,960

86,990

86,170

85,750

84,610

83,300

82,110

Feb.

81,280

80,540

80,220

79,860

79,160

78,920

77,150

76,700

76,120

75,820

75,580

74,880

74,140

73,480

72,870

72,120

72,020

71,940

71,260

70,530

70,130

69,630

69,050

68,920

68,780

68,160

67,510

66,800

_

_

-

Mar.

65,870

64,980

64,930

64,880

64,570

63,980

63,610

63,020

62,630

62,300

62,200

61,300

60, 740

60,400

60,020

59,660

59,350

59,160

58,310

57,650

57,310

56,950

56,600

56,600

56,820

56,520

56,190

55,800

55,370

54,930

54,830

Apr.

65,770

64,470

64,160

63,810

63,460

52,990

52,910

52,610

52,220

51,700

51,000

50,330

49,670

49,310

49 , 000

48,300

47,490

46,780

46,490

45,900

45,990

46,420

46,150

44,980

43,460

42,090

40,520

39,150

37,950

36,600

-

May

35,240

33,780

32,400

30,940

29,870

29,560

29,670

27,810

26,590

25,200

24,380

24,460

24,590

24,260

24,070

24,170

24,720

24,880

24, 420

24,790

24,050

24,170

25,610

26,350

26,700

27,210

28,120

30,500

33,190

35,550

38,400

June

40,980

42,630

43,570

43,850

43,820

43,590

43,310

43,340

43,610

44,000

44,320

44,500

44,760

46,010

47,110

49,190

52,650

58,290

63,080

67,910

74,020

78,960

82,990

86,530

90,220

94,620

98,990

103,200

107,100

110, 100

-

July

114,000

117,500

121,400

125,800

129,500

132,400

135,600

138,800

140,900

142,800

143,900

145, 100

146,200

147,000

147,400

147,500

147,600

147,000

146,900

147,300

147,400

147,200

146,600

146,400

146,400

146,000

145,800

145, 700

146,000

145,900

146,000

Aug.

146,600

146,700

146,700

146,600

146,600

146,000

145,400

144,600

143,600

142,700

142,900

143,200

143,000

142,700

142,400

142,200

142,000

142,300

142,800

142,700

142,800

142,700

142,700

142,400

142,600

142,800

142,300

141,900

141,600

141,400

141,200

Sept.

141,200

141,500

141,600

141,500

141,400

141,400

141,000

140,400

140,300

140,000

139,600

139,200

139,800

138,300

138,000

137,600

137,000

136,400

135,900

135,300

134,800

134,700

134, 500

134, 200

134,000

133,400

132,900

132,600

132,300

132,300

-

Monthly elevation and contents, water year October 1950 to September 1951

Date

Calendar year 1950. .....

Water year 1950-51......

Elevation 

(feet)

-

3 942 * 9O

-

Contents 

(acre-feet)

-

-

Change In contents 

during month 

(acre-feet)

-25,800

+12,900
BLUE RIVER BASIN 55

Blue River below Green Mountain Reservoir, Colo.

Location. Lat 39°56' , long. 106°21', in NE£ sec. 33, T. 1 S. , R. 80 W. , on right bank 

just^downstream from Spring Creek, 4 miles downstream from Green Mountain Dam,and 

10 miles southeast of Kremmling.

Drainage area. 623 sq mi.

Records available. October 1937 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,510 ft (from topographic map).

Average discharge.--14 years, 508 cfs.

Extremes. Maximum discharge during year, 2,310 cfs July 17 (gage height, 4.60 ft); minimum daily, 16 cfs Dec. 2.

1937-51: Maximum discharge,. .4,000 cfs June 4, 1938 (gage height, 5.93 ft), from 

rating curve extended above 3,000 cfs; minimum daily (prior to construction of Green 

Mountain Reservoir), 80 cfs Feb. 18-24, 1938, Feb. 18, 19, 1940; no flow at times 

during 1943.

Remarks. Records good except those below 50 cfs, which are fair. Flow regulated by Green 

Mountain Reservoir (see preceding page). Diversions above station for irrigation of 

about 5,000 acres above station and about 110 acres below.

Rating tables, water year 195O-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Nov. 30 Dec. 1 to Sept. 30

1.0 

1.5

62

150

2.0 

2.5 

3.0

285

490

780 1.0 

1.5 

2.0

154

285

2.3

3.0 

3.5 

4.0 

4.5

490

740

1,110

1,650

2,200

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

268

334

381

369

282

259

*32

18

450 

*346

179

86

69

50

18

214

91

62

69

62

276

32

86

74

416

317

344

134

71

182

40

5,611

181

11,130

Nov.

76

230

375

36

18

372

268

684

'555 

340

112

18

*284

118

73

329

288

30

34

519

510

226

31

242

54

18

278

321

194

160

-

6,746

225

13,380

Dee.

100

16

18

219

218

280

175

148

314 

30

128

423

428

412

406

*213

392

404

402

401

424

404

150

183

120

401

384

411

415

169

158

8,346

269

16,550

Jan.

180

411

426

237

175

209

342

484

509 

446

482

465

*292

220

556

550

532

586

610

328

278

512

538

549

562

528

486

301

664

731

717

13,904

449

27,580

Feb.

478

402

248

256

412

4"50 681

336

354 

237

219

452

447

391

408

432

*166

146

*5Z

458

326

369

405

180

156

404

454

395

^

_

-

10,124

362

Mar.

608

546

159

160

258

359

294

388

308 

282

*155

520

411

274

300

269

214

236

524

432

280

292

263

114

IB

260

313

318

310

304

166

9,335

301

20,080 18,520

Apr.

140

298

268

317

349

358

185

310

317 

390

468

430

450

*332

332

530

582

568

447

577

308

96

430

946

1,130

1,130

1,140

1,170

1,180

1,160

-

16,338

545

32,410

May

1,140

1,120

1,120

1,170

1,040

895

1,200

1,280

1,470 

*1,470

1,190

874

926

1,090

963

842

828

?70

,440

,260

,460

,500

,500

,480

,510

,480

,530

,580

,610

1,620

1.670

39,228

1,265

77,810

June

1,650

1,640

1,640

1,630

*1,630

1,640

1,640

1,650

1,650 

1,650

1,640

1,610

1,630

1,220

1,620

1,630

1,650

1,700

1,700

1,730

1,780

1,690

1,390

1,360

1,340

1,330

1,320

1,300

1,280

1,290

-

46,630

1,554

92,490

July

1,020

972

956

'975 707

1,130

926

926

1,090 

1,300

1,290

1,290

1,320

*1,380

1,470

1,650

1,910

2,120

1,776

1,450

1,750

1,880

1,750

1,460

1,380

1,380

1,250

1,360

1,380

1,390

1,360

41,943

1,353

83,190

Aug.

1,080

1,190

1,400

1,400

1,410

1,410

1,410

1,420

1.450 

1,320

648

634

788

802

817

732

*622

338

334

755

718

700

646

755

490

459

682

660

670

694

630

27,039

872

53,630

Sept.

416

400" 286

424

434

448

466

444

490 

448

484

*514

496

582

45T

450

546

532

554

566

516

389

416

424

433

512

398

451

415

320

-

13,706

457

27,190

Calendar year 1950: Max 1,510 Min 16 Mean 520 Ao-ft 376,400

Water year 1950-51: Max 2,120 Min 16 Mean 655 Ac-ft 474,000

* Discharge measurement made on this day.
56 PINEY RIVER BASIN

Piney River "below Piney Lake, near Minturn, Colo.

Location.--Lat 39°42'30", long. 106°25'35", in W? sec. 14, T. 4 S., R. 81 W., on left 

bank \\ miles upstream from Dickson Creek, if miles downstream from Piney Lake, and 

8 miles north of Minturn.

Drainage area. 13.0 sq mi.

Records available. October 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 9,100 ft (from topographic map).

Extremes.--Maximum discharge during year, 324 cfs June 18 (gage height, 5.08 ft); minimum 

not determined, occurred during period of no gage-height record.

1947-51: Maximum discharge, that of June 21, 1951; maximum gage height, 5.23 ft 

June 17, 1949; minimum discharge not determined, occurred during period of no gageheight record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion above station.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

3.1

3.2

3.3 

3.6

2.0

4.2

7.2

20

3.8 

4.0 

4.3 

5.0

110

300

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Z4

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.8

5.7

6.3

*6.3

5.7

5.4

4.8

4.2

4.5

4.2

4.2

4.0

3.8

3.5

3.3

3.5

3.5

3.3

3.3

3.1

3.1

2.9

2.9

2.9

2.9

2.7

2.7

2.7

2.7

2.4

2.7

118.0

3.81

234

Nov.

2.7

2.7

2.1

2.5

2.5

2.5

2.5

2.5

2.5

2.1

*1.8

1.5

TTi

1.7

1.7

1.7

*1.6

1.6

1.6

1.6

1.7

1.7

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

-

56.9

1.90

113

Dec.

1.3

40.3

1.3

80

Jan.

1.2

37.2

1.2

74

Feb.

1.4

'

_

-

39.2

1.4

78

Mar.

(*)

2.2

68.2

2.2

135

Apr.

4.5

-

135.0

4.5

268

May

23

20

19

21

25

33

44

52

46

40

48

58

60

52

52

*69

79

69

79

93

85

79

95

93

73

81

142

210

210

162

185

2,397

77 .3

4,750

June

138

73

57

46

42.

*42

46

57

63

69

69

57

56

71

102

172

202

276

222

225

*264

228

145

120

182

237

219

202

155

152

-

3,989

133

7,910

July

160

*172

185

195

195

142

175

178

142

120

*85

115

100

85

77

75

104

79

71

71

89

81

53

44

44

40

47

69

52

46

53

3,144

101

6,240

Aug.

46

53

60

49

60

43

34

29

24

19

17

15

14

13

13

12

11

*11

11

13

24

17

13

13

13

11

11

11

12

15

13

700

22.6

1,390

Sept.

11

7.4

6.9

6.0

5.7

5.1

4.8

4.2

4.0

4.0

4.0

5.7

*6.3

5.1

4.2

3.8

3.5

3.3

3.5

3.3

5.4

6.3

5.7

4.5

4.0

3.5

3.3

3.3

9.9

13

-

160.7

5.36

319

Calendar year 1950: Max 2O2 Mln - Mean 20.6 Ac-ft 14,880

Water year 1950-51: Max 276 Mln - Mean 29.8 Ac-ft 21,590

Peak discharge (base, 150 efs). May 29 (3:30 a.m.) 261 cfs (4.87 ft); June 18 (6 a.m.) 324 cfs 

(5.08 ft); June 23 (4 a.m.) 285 cfs (4.95 ft); July 5 (3 a.m.) 255 cfs (4,83 ft); July 8 (3 a.m.) 31 

cfs (4.75 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 2 to Dec. 12. No gage-height record Dec. 13 

to May 7 (stage-discharge relation affected by ice during most of period); discharge estimated on 

basis of 1 discharge measurement, weather records, and records for nearby stations.
PINEY RIVER BASIN 57

Piney River near State Bridge, Colo.

Location. Lat 39°48', long. 106°35', in sec. 16, T. 33., R. 82 W., on left bank at 

 Ferry Olsen Ranch, just downstream from Rock Creek,and 6 miles southeast of State 

Bridge.

Drainage area.--£ sq mi.

Records available.--May 1944 to September 1951.

Gage.--Water-stage recorder. Datum of ge is 7,272.35 ft above mean sea level, unExtremes.--Maximum discharge during year, 590 cfs June 21 (gage height, 5.14 ft); minimum 

 ctaTTy, 4.8 cfs Oct. 12.

1944-51: Maximum discharge, 943 cfs May 19, 1948 (gage height, 5.29 ft), from 

ratine curve extended above 740 cfs; minimum daily, 2.9 cfs Sept. 21, 1944.

Rating tables, water year 195O-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Feb. 28

4.5

7.5

17

Mar. 1 to Sept. 30

3.4 

3.8 

4.4 

5.1

108

270

570

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

8.2

10

10

10

*8.6

7.5

6.3

6.3

6.3

6.0

5.4

10~~ 4.8

15

15

15

15

14

13

13

13

13

15

13

13

13

13

14

13

13

13

345.4

11.1

685

Nov.

13

13

13

13

13

16

16

15

12

11_

13

14

*14

16

16

15

16

16

16

16

17

18

17

17

17

16

16

16

16

16

-

453

15.1

899

Dec.

16

16

15

16

16

15

16

18

17

17

17

17

*17

16

16

16

16

16

16

16

15

14

14

14

15

15

14

15

15

15

14

485

15.6

962

Jan.

13

14

14

14

14

13

12

12

13

*13

13

13

13

13

13

13

13

13

13

12

13

13

13

13

13

13

13

13

13

13

12

403

13.0

799

Feb.

12

13

14

15

15

15

15

15

15

15

15

15

15

14

*15

17

16

16

16

16

16

16

15

15

15

15

15

15

_

_

-

421

15.0

835

Mar.

15

16

16

15

15

14

12

*10

6.8

6.0

5.0

5.8

5.4

5.4

5.6

6.6

7.9

8.5

7.6

7.6

7.6

8.2

8.8

9.7

10

9.4

9.4

10

11

10

10

295.3

9.53

586

Apr.

11

13

14

15

16

15

13

13

13

13

12

12

13

14

17

19

22

28

*34

34

39

46

56

65

61

64

64

72

82

78

-

968

32.3

1,920

May

70

64

66

86

110

140

150

160

150

*130

152

189

195

178

170

240

264

252

294

333

325

325

361

357

337

373

452

466

470

485

470

7,814

252

15,500

June

452

357

294

249

225

225

*240

264

270

277

274

249

249

267

294

361

413

461

480

475

545

495

421

373

405

434

405

381

313

298

-

10,446

348

20,720

July

291

288

291

291

288

237

255

252

219

204

*170

189

172

155

145

140

162

145

130

128

145

142

108

92

84

79

82

110

84

72

79

5,229

169

10,370

Aug.

66

74

88

76

85

71

56

50

43

38

34

30

26

24

22

22

20

19

19

22

36

*28

23

22

22

20

18

18

19

29

22

1,142

36.8

2,270

Sept.

19

17

16

15

14

14

12

12

11

10

10

14

*14

12

11

9.4

9.1

9.1

9.1

8.8

13

14

12

10

9.1

8.5

8.2

8.2

18

18

-

365.5

12.2

725

Calendar year 1950: Max 456 Mln 4.8 Mean 61.3 Ac-ft 44.350

Water year 1950-51: Max 545 Mln 4.8 Mean 77.7 Ac-ft 56,270

Peak discharge (base. 520 efs). May 27 (7:30 a.m.) 525 cfs (5.01 ft); June 21 (6 a.m.) 590 cfs 

(5 .14 f t) .

Discharge measurement made on this day.
58 EAGLE RIVER BASIN

Eagle River at Redcliff, Colo.

Location. Lat 39°30'25", long. 106°22 I 00", in sw£ sec. 20, T. 6 S., R. 80 W., on left 

came at Redcliff, a third of a mile upstream from Turkey Creek.

Drainage area.--72.2 sq mi.

Records available . October 1910 to September 1925, May 1944 to September 1951.

Gage. Water-stage recorder. Datum of gage is 8,652.02 ft above mean sea level, datum of

Jan. 8, 1911, to Sept. 30, 1925, chain gage at bridge a quarter of a mile downstream 

at different datum.

Average discharge. 22 years, 62.1 cfs.

Extremes. Maximum discharge during year, 510 cfs May 31 (gage height, 4.05 ft), from

 rating curve extended above 330 cfs; minimum daily, 11 cfs Jan. 7-9, 31.

1910-25, 1944-51: Maximum discharge observed, 1,010 cfs June 5, 1912 (gage height, 

4.0 ft, site and datum then in use), from rating curve extended above 500 cfs; minimum 

daily, 1 cfs Oct. 15, 1917.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 which are fair. Transmountain diversions above station, see p. 340 . Transbasin diversions above station from Robinson Reservoir (capacity, 2,520 acre-ft) for mining development on Tenmile Creek. Small diversions for hay meadow irrigation above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 31 June 1 to Sept. 30

2.2

2.3

2.4 

2.6

2,8 

3.1 

3.5 

4.0

66

135

265

485

2.4

2.5

2.7

2.8

2.9 

3.4

4.0

61

220

485

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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.

15

17

T6

*17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

17

16

16

16

16

16

16

16

15

15

16

16

496

16.0

984

Nov.

16

16

16

16

16

17

16

17

b!6

bl5

b!4

*b!4

b!4

b!5

b!5

b!4

b!5

b!5

16

16

16

17

16

b!5

b!5

b!5

b!5

b!5

b!5

b!5

-

461

15.4

914

Dec.

15

b!5

b!4

b!5

b!5

b!3

b!5

~lS b!7

16

16

15

15

15

15

15

15

*15

15

15

14

13

13

13

14

14

13

14

14

14

14

452

14.6

897

Jan.

12

13

13

13

13

12

11

TT

11

13

*13

13

13

12

13

13

13

13

13

12

13

14

T5

13

13

13

13

13

13

12

11

391

12.6

776

Feb.

12

T5

14

15

15

14

14

14

14

14

14

14

14

13

14

*I5

15

14

14

14

14

14

14

13

13

13

13

13

_

-

-

387

13.8

768

Mar.

13

13

13

13

13

14

14

14

15

14

13

13

*13

12

17

13

14

b!3

b!3

15

16

16

17

19

20

19

18

20

22

T7

16

468

15.1

928

Apr.

16

16

17

18

17

17

*17

15

15

14

24

22

21

20

21

24

26

26

26

29

34

36

40

47

44

47

46

58

63

55

-

871

29.0

1,730

May

47

424"2

52

66

91

105

112

110

*98

108

128

122

105

103

112

122

135

162

189

189

186

206

220

220

240

293

354

425

435

465

5,284

170

10,480

June

405

349

308

260

244

228

236

248

252

244

232

220

216

224

240

268

300

*312

308

292

300

268

244

220

216

212

196

184

174

162

-

7,562

252

15,000

July

150 T3"8

129

126

117

108

102

93

87

*81

73

70

64

58

54

56

*58

56

49

49

51

47

44

44

40

37

57

42

37

38

46

2,181

70.4

4,330

Aug.

51

52

67

5?

44

42

36

32

30

30

29

28

26

25

24

23

*23

20

TO

22

30

26

25

24

23

22

20

20

21

26

24

937

30.2

1,860

Sept.

22

?5

18

17

15

15

15

15

15

15

15

17

17

*15

15

15

14

15

15

15

18

17

16

14

14

14

14

14

16

14

-

471

15.7

934

Calendar year 1950: Max 278 Min 10 Mean 42.4 Ac-ft 30,660

Water year 1950-51: Max 465 Min 11 Mean 54.7 Ac-ft 39,600

Peak discharge (base. 280 efs) . May 31 (12:30 a.m.) 510 cfs (4.05 ft)j June 18 (8 p.m.) 336 cfe 

(3.69 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Dec. 9 to Mar. 12 (stage-discharge relation affected by ice during 

part of period), Aug. 18 to Sept. 13; discharge estimated on basis of 3 discharge measurements, 

weather records, recorded range in stage, and records for nearby stations.
EAGLE RIVER BASIN 

Turkey Creek at Redcliff, Colo.

59

Location.--Lat 39°30'50", long. 106°22'05", in sec. 19, T. 6 S., R. 80 W., on left bank 

at Kedcliff, 1,000 ft upstream from mouth.

Drainage area.--28.6 sq mi.

Records available.--June 1913 to September 1921, May 1944 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 8,641.79 ft above mean sea level, datum of

 of 1929. July 1, 1913, to Sept. 30, 1921, staff or chain gage at bridge 200 ft downstream at different datum.

May 25, 1944, to Oct. 26, 1947, water-stage recorder at bridge 200 ft downstream 

at datum 2.37 ft lower.

Average discharge.--15 years, 31.3 ofs.

Extremes.--Maximum discharge during year, 467 cfs June 21 (gage height, 4.63 ft), from

 raTTng curve extended above 250 cfs; minimum, 0.5 cfs Nov. 10 (gage height, 2.68 ft). 

1913-21, 1944-51: Maximum discharge observed, 670 cfs June 13, 1918 (gage height, 

4.7 ft, datum then in use); minimum discharge recorded, that of Nov. 10, 1950.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnTch are poor. Small diversions for irrigation of hay meadows above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 20, 21)

2.6

2.7

2.8

2.9

Oct. 1 to June

0.4 3.0 6.5

.9 3.1 10

2.0 3.3 22

3.7 3.5 42

3.8 

4.1 

4.6

165

355

2.6 

2.8 

3.0 

3.3

June 21 to Sept. 30

5.0 3.6

6 3.9

2 4.6

125

215

495

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

5.7

5.4

*5.4

5.4

5.4

5.1

5.1

5.1

4.8

4.8

4.5

4.5

4.3

4.3

4.5

4.3

4.3

4.3

4.0

4.3

4.0

4.0

4.0

4.0

3.7

3.7

3.7

3.5

3.5

3.2

138.7

4.47

275

Nov.

3.4

3.4

2.8

3.5

2.7

3.5

3.4

3.4

2.5

*il

B

3.2

3.4

3.2

3.2

2.7

2.7

3.0

2.8

3.7

3.4

3.0

2.8

3.0

3.0

2.7

2.7

3.2

3.7

-

93.9

3.13

186

Dec.

3.2

2.7

b2.6

b2.8

3.0

b2.8

b2.6

2.7

2.7

2.3

2.3

2.5

2.5

2.5

2.5

2.5

2.3

*2.3

2.2

2.2

2.2

2.5

b2.3

b2.3

b2.3

b2.5

b2.5

b2.5

b2.5

b2.4

2.3

77.5

2.50

154

Jan.

2.0

1.8

1.8

1.8

1.8

1.7

1.7

1.7

l.S

1.7

*1.7

1.6

1.3

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.1

1.1

3^0

1.1

1.0

1.1

43.1

1.39

85

Feb.

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.2

1.3

1.3

1.3

1.3

1.2

*1.2

1.2

1.3

1.3

1.3

1.4

1.4

1.4

1.4

1.4

1.5

1.5

1.5

.

-

35.8

1.28

71

Mar.

1.5

1.5

1.6

1.6

1.6

1.7

1.7

1.8

1.8

1.8

1.8

1.7

*1.8

1.8

2.0

1.9

1.8

1.7

1.7

1.7

1.8

2.2

b2.0

bl.9

b2.0

b2.0

2.0

1.7

1.4

1.4

1.7

54.6

1.76

108

Apr.

2.3

2.0

2.3

2.2

2.0

1.9

*2.2

1.7

1.9

1.9

bl.9

1.7

b2.5

b3.5

4.8

5.4

5.4

5.7

5.7

6.5

7.2

8.2

9.6

12

11

12

11

14

17

16

181.5

6.05

360

May

13

10

9.3

11

17

30

39

45

42

*35

36

45

48

46

42

47

52

56

64

79

81

79

84

88

84

86

120

168

179

193

196

2,124.3

68.5

4,210

June

196

168

135

108

97

92

97

106

112

115

112

112

115

125

138

179

218

*275

275

331

355

239

201

171

159

156

165

138

125

117

-

4,932

164

9,780

July

115

113

115

113

*115

113

107

95

83

*75

69

64

62

58

54

54

*53

46

41

41

40

38

38

36

36

35

36

35

34

34

35

1,983

64.0

3,930

Aug.

35

34

34

32

32

31

30

29

28

28

27

26

24

22

19

17

*16

15

16

19

18

15

14

14

13

12

11

11

12

12

10

656

21.2

1,300

Sept.

9.5

8.5

8.5

8.0

8.0

8.0

7.5

7.0

7.0

6.5

7.0

8.0

7.0

*6.5

6.5

6.5

6.5

6.5

6.5

6,0,

10

8.0

7.5

7.5

7.0

6.5

6.5

7.0

8.5

7.0

-

221.0

7.37

438

Calendar year 1950 : Max 259 Min 0.7 Mean 26.1 Ac-ft 18,860

Water year 1950-51 : Max 355 Min 0.7 Mean 28.9 Ac-ft 20,900

Peak discharge [base, 250 cfs). May 30 235 cfs (4.30 ft); June 21 (l a.m.) 467 cfs (4.63

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Feb. 1 to Mar. 12 (stage-discharge relation affected by ice during 

part of period); discharge estimated on basis of 1 discharge measurement, weather records, recorded 

range in stage, and records for nearby stations.
60 EAGLE RIVER BASIN

Homestake Creek at Gold Park, Colo.

Location (revised) . Lat 39°24'05", long. 106°26'20", in NW£ sec. 34, T. 7 S. , R. 81 W. , 

on lert DanK at Gold Park, 500 ft downstream from French Creek, three-quarters of a 

mile downstream from Missouri Creek, 2 miles downstream from confluence of East and 

West Forks, and 6-| miles southwest of Pando.

Drainage area. 35.7 sq mi.

Records available.--October 1947 to September 1951.

Gage. Water-stage recorder. Datum of gage is 9,245 ft above mean sea level (river-profile 

survey).

Extremes. Maximum discharge during year, 915 cfs June 21 (gage height, 6.05 ft), from 

rating curve extended above 500 cfs; minimum not determined, occurred during period of 

no gage-height record.

1947-51: Maximum discharge, that of June 21, 1951; maximum gage height, 6.10 ft 

June 16, 1949; minimum discharge not determined, occurred during period of no gageheight record.

Remarks. Records good except those for period of no gage-height record, which are poor. 

No diversion above station.

Rating tables, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge In cubic feet per second)

(Shifting-control method used June 18-21)

2.3

2.4

2.5

2.6

2.5 

4.0 

6.0 

9.5

Oct. 1 to June 20 

2.8 19

3.0 

3.3 

3.6

4.0

34 5.0

73 5.2

130

June 21 to Sept. 30

240

590

675

2.4

2.5

2.6 

2.8 

3.0

3.5 

5.5

3.3

3.7 

4.2

5.0 

6.0

124

235

500

940

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

8.1

11

TT

no

9.5

9.2

7.4

7.0

7.0

6.4

6,0

5.8

5.2

5.0

5.0

5.2

5.0

4.8

4.6

4.6

4.2

4.0

3.8

3.8

3.8

3.7

3.6

3.6

3.4

3.2

5.1

178.0

5.74

353

Nov.

3.2

3.0

4.0

5.2

5.8

4.4

4.4

4.6

3.0

*5.0

5.4

5.8

5.5

5.5

5.5

5.6

5.6

5.8

5.7

5.6

6.0

5TS

5.8

5.6

5.8

6.0

5.7

5.4

5.4

5,8

-

155.6

5.19

309

Dec.

5.4

167.4

5.4

332

Jan.

3.7

114.7

3.7

228

Feb.

3.5

_

.

-

98.0

3.5

194

Mar.

4.5

139.5

4.5

277

Apr.

5.2

575

6.9

6.3

6.3

*6.3

6.2

6.0

5.8

5.5

5.3

5.4

6.5

8.0

9.0

10

11

13

11

11

13

14

16

25

21

25

22

29

34

75

-

378.2

12.6

750

May

23

20

19

21

41

67

83

90

83

82

*99

126

126

94

87

115

152

170

204

249

225

219

258

240

198

270

382

446

35S

351

351

5,290

171

10,490

June

303

225

165

128

126

162

225

270

270

Z67

234

213

258

306

344

438

506

652

*614

648

755 sm

472

458

556

576

584

544

512

486

-

11,881

396

23,570

July

440

451

486

504

TI6

378

437

384

316

*259

241

265

238

220

205

220

253

244

225

220

253

191

156

144

124

113

133

. 128

124

113

134

8,001

258

15,870

Aug.

128

119

138

Tl9

108

87

75

61

52

46

42

38

36

34

30

27

*26

23

23

30

35

26

25

26

26

22

20

18

IS

25

21

1,504

48.5

2,980

Sept.

18

16

14

12

11

10

8.8

8.5

8.5

7.8

7.2

12

10

*8.5

7.5

6.8

6.2

5,3

5.3

4.9

9.2

9.2

7.8

6.5

5.5

5.1

4.5 4T5-

13

10

-

263.6

8.79

523

Calendar year 1950 : Max 449 Mln - Mean 53.5 Ac-ft 38,720

Water year 1950-51: Max 755 Mln - Mean 77.2 Ac-ft 55,880

Peak discharge (base, 700 cfs).--June 21 (8:30 p.m.) 915 ofs (6.05 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 9 to Apr. 17 (stage-discharge relation affected by Ice during 

most of period); discharge estimated on basis of 2 discharge measurements, weather records, and records for nearby streams.
EAGLE RIVER BASIN 61

Homestake Creek near Redcliff, Colo.

Location. Lat 39°29' , long. 106°22 ! , in sec. 6, T. VS., R. 80 W., on left bank 3 miles upstream from mouth and 3 miles south of Redcliff.

Drainage area. 58.9 sq mi.

Records available. October 1910 to September 1918, May 1944 to September 1951. Published

 as "at Hed Cliff" October 1910 to September 1916.

Gage. Water-stage recorder. Datum of gage is 8,783 ft above mean sea level (river-profile

 survey). Jan. 8, 1911, to Sept. 30, 1918, staff gage at three sites 2^ to 2j miles 

downstream at different datums.

Extremes.--Maximum discharge during year, 866 cfs June 21 (gage height, 3.96 ft); minimum

 daily, 4.5 cfs Jan. 31, Feb. 7, 8.

1910-18, 1944-51: Maximum discharge observed, 1,300 cfs June 24, 1918 (gage height, 

6.2 ft, site and datum then in use); minimum observed, 0.6 cfs Jan. 25, 1915 (discharge 

measurement).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. No diversion above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, apd discharge, in cubic feet per second)

1.5

1.6

1.7

1.9 31

2.1 

2.5 

2.9

4.0

63

152

285

890

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

12

13

»12

12

11

10

9.2

9.2

9.2

8.6

8.0

7.5

7.5

7.2

7.2

7.2

7.2

6.8

6.8

6.4

6.1

5.8

5.8

5.8

5.8

5.8

5.4

5.0

4.7

4.7

242.1

7.81

480

Nov.

5.0

5.4

4.7

6.4

7.5

6.2

6.2

6.8

5.8

*5.0

6.6

7.8

7.2

7.2

7.2

7.2

7.2

7.4

7.6

7.4

8.0

6.8

7.2

6.6

7.0

7.4

6.8

6.4

6.4

7.0

-

201.4

6.71

399

Dec.

8.2

7.2

6.4

f.4

8.6

7.4

7.0

7.6

8.6

7.6

8.0

8.6

9.2

97Z

9.2

9.2

8.8

*8.2

8.0

8.0

8.0

8.4

8.6

8.6

8.6

8.8

8.8

8.8

8.8

8.2

8.4

256.4

8.27

509

Jan.

7.8

6.8

6.2

6.4

7.0

6.8

6.2

5.8

5.4

5.2

*5.0

5.0

5.0

4.7

4.7

4.7

4.6

4.6

4.6

4.6

4.6

4.6

4.8

4.8

4.8

4.8

4.6

4.7

4.7

4.7

4.5

162.7

5.25

323

Feb.

4.7

4.7

4.7

4.7

4.7

4.7

4.5

TTS

4.6

4.9

5.2

5.4

5.4

5.4

5.4

5.2

*5.0

5.0

5.2

5.4

5.4

5.4

5.4

5.4

5.4

5.6

5.8

5^8.

-

-

143.5

5.12

285

Mar.

5.8

6.0

6.6

6.6

7.0

7.4

7.6

7.6

8.2

8.4

8.4

*8.4

8.4

8.6

8.4

8.4

8.8

8.8

8.2

7.8

.8

.4

.4

.2

.4

.6

.2

.0

7.0

7.4

7.2

236.0

7.61

468

Apr.

8.0

8.2

11

11

10

*9.2

8.0

9.0

9.0

9.0

11

10

12

15

18

17

22

28

38

42

54

58

69

85

75

87

79

100

~9T 111

-

1,117.4

37.2

2,220

May

73

67

61

77

111

134

150

201

183

*166

183

217

217

172

158

192

228

245

285

360

335

316

365

370

290

370

524

662

617

502

524

8,355

270

16,570

June

452

330

261

210

201

224

277

340

335

335

308

269

298

380

430

568

692

*770

704

728

782

674

556

524

584

612

595

584

540

529

-

14,092

470

27,950

July

496

485

502

518

458

390

441

410

340

*294

261

294

269

245

231

231

277

269

238

231

265

214

177

169

152

140 142-

163

169

147

163

8,781

283

17,420

Aug.

163

152

169

152

142

120

109

96

79

69

65

58

50

47

42

37

*34

30

29

37

52

45

35

35

31

30

27

24

24

30

30

2,043

65.9

4,050

Sept.

25

21

19

17

15

13

12

11

11

11

10

16

16

*12

11

10

9.7

8.6

8.6

7.5

12

13

11

9.2

8.6

7.5

7.2

6.8

14

15

-

368.7

12.3

731

Calendar year 1950: Max 635 Min 4.7 Mean 74.5 Ao-ft 53,970

Water year 1950-51: Max 782 Min 4.5 Mean 98.6 Ao-ft 71,400

Peak discharge (base, 710 cfs).--May 29 (12:30 a.m.) 776 cfs (3.81 ft); June 21 (4 a.m.) 866 cfs 

(3.96 ft).
EAGLE RIVER BASIN

Gore Creek at upper station, near Minturn, Colo.

Location. Lat 39°37'35", long. 106°16'40", in NW£ sec. 18, T. 5 S., R. 79 W. , on right 

baruc lOO ft downstream from bridge on D. S. Highway 6, a quarter of a mile upstream 

from Black Gore Creek, and 8-| miles northeast of Minturn.

Drainage area. 14.4 sq mi.

Records available. October 1947 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,620 ft (from topographic map).

Extremes. Maximum discharg'e during year, 514 cfs June 18 (gage height, 6.65 ft), from 

rating curve extended above 250 cfs; minimum daily, 2.3 cfs Nov. 2.

1947-51: Maximum discharge, that of June 18, 1951; minimum daily, 1.7 cfs Feb. 15- 

24, 1950.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. No diversion or regulation above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 29 to June 18, June 30 to July 23)

Oct. 1 to May 6 May 7 to Sept. 30

3.0

3.1

3.2

1.5 

2.5

4.0

3.5 

3.7 

4.0

3.3

3.4

3.6

3.7

2.6

4.8

12

4.5 

5.0 

5.5 

6.0

170

305

475

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*6.7

677

5.9

5.4

5.2

4.2

4.7

4.5

4.2

4.0

4.0

3.7

3.7

3.7

3.7

3.6

3.6

3.4

3.4

3.2

3.2

3.1

3.0

3.1

3.0

2.8

2.8

2.8

2.6

2.6

121.9

3.93

242

Nov.

2.8

2.3

F75

3.7

3.4

3.6

3.4

3.6

*b3.0

b2.7

b3.3

3.7

3.6

3.4

3.2

3.4

3.2

3.2

3.2

3.6

175

3.6

3.2

3.2

3.2

3.2

3.1

3.1

3.1

-

98.5

3.28

195

Dec.

3.1

3.2

b3.0

374

b3.7

b3.3

b3.2

b3.8

4.0

3.6

4.0

4.2

4.2

4.3

4.3

4.3

4.2

4.0

*4.0

4.0

4.1

4.1

4.2

4.2

4.2

4.3

4.3

4.2

4.1

4.0

4.1

121.6

3.92

241

Jan.

3.8

3.5

3.2

3.5

3.8

3.5

3.3

3.2

*3.1

3.1

2.9

2.8

2.8

2.7

2.6

2.6

2.6

2.6

2.6

2.6

2.

2.

2.

2.

2.

2.

2 .

2.

2.

2.

2.

90.0

2.90

179

Feb.

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

2.6

2.6

2.6

2.7

2.7

2.8

2.9

3.0

3.0

3.0

3.0

3.0

3.1

37T

_

-

75.1

2.68

149

Mar.

3.1

3.2

3.3

3.3

3.3

3.5

3.6

3.6

3.7

3.8

3.8

3.7

*3.7

3.8

3.6

3.5

3.7

3.6

3.4

3.4

3.3

3.2

3.1

3.1

3.1

3.3

3.2

3.1

3.1

3.3

3.2

105.6

3.41

209

Apr.

3.2

374

3.8

4.2

4.1

4.1

4.0

*4.0

3.8

3.7

3.6

3.4

3.6

4.5

5.0

5.7

6.9

6.9

6.9

7.7

8.7

9.0

11

13

11

11

11

15

17

15

-

214.2

7.14

425

May

12

10

10

13

22

31

*37

40

34

34

32

45

43

35

34

49

60

64

70

82

74

75

90

80

75

84

96

202

TTO

154

168

2,025

65.3

4,020

June

127

84

70

57

55

*59

71

86

86

85

73

73

85

111

164

233

272

370

335

*296

326

236

186

195

242

272

263

239

233

215

-

5,199

173

10,310

July

180

190

218

236

*208

205

239^

221

*186

138

136

136

128

122

119

124

*124

110

110

117

110

89

77

69

66

63

63

62

61

61

66

4,034

130

8,000

Aug.

64

60

66

63

63

54

46

40

34

31

28

27

26

25

23

22

21

20

*19

25

26

21

18

17

15

14

13

12

11

14

12

930

30.0

1,840

Sept.

12

10

9.6

8.8

7.7

7.4

7.0

6.4

6.1

5.8

5.4

*7.0

6.1

5.1

4.6

4.4

4.1

3.9

4.1

3.7

7.C

6.4

6.1

5.1

4.4

3.S

3.5

377

8.4

6.4

-

184.1

6.14

365

Calendar year 1950: Max 225 Min 1.7 Mean 24.3 Ac-ft 17,600

Water year 1950-51: Max 370 Min 2.3 Mean 36.2 Ac-ft 26,180

Peak discharge (base, 200 cfs).--Kz

(6.65 ft); June 27 (7:30 p.m.) 391 ci

y 28 (7 p.m.) 290 cfs (5.53 ft); June 18 (12:30 a.m.) 514 cfs 

-s (5.71 ft); July 4 (7:30 p.m.) 363 cfs (5:52 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice. 

Note. No gage-height record Dec. 11 to Apr. 7 (stage-discharge relation affected by Ice during mo^t

of period); discharge estimated on basis of 4 discharge measurements, weather records and records fonearby stations.
EAGLE RIVER BASIN 63

Black Gore Creek near Minturn, Colo.

Location. Lat 39°35'45", long. 106°15'50", in NW£ sec. 29, T. 53., R. 79 W., on right 

bank three-quarters of a mile upstream from Timber Creek, 2^ miles upstream from mouth, 

and 9 miles east of Minturn.

Drainage area.--11.8 sq mi.

Records available.--October 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 9,180 ft (from topographic map).

Extremes.--Maximum discharge during year, 234 cfs June 19 (gage height, 4.83 ft), from 

rating curve extended above 160 cfs; minimum daily, 1.2 cfs Nov. 10.

1947-51: Maximum discharge, 300 cfs May 22, 1948 (gage height, 5.15 ft), from rating 

curve extended above 160 cfs; minimum, 0.9 cfs Jan. 11, 1950 (gage height, 2.79 ft).

Remarks.--Records good above 10 cfs and fair below. No diversion or regulation above 

station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

2.8

2.9 

3.1 

3.3

1.0 

2.2 

6.4

3.5 

3.7 

4.0 

4.9

89

248

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

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.

2.1

*3.0

278

2.4

2.2

2.2

2.1

2.1

2.1

2.1

2.1

2.0

2.0

1.8

1.8

1.8

1.8

1.8

1.7

1.6

1.6

1.6

1.6

1.5

1.6

1.6

1.6

1.6

1.6

1.5

1.5

58.8

1.90

117

Nov.

1.6

1.8

bl.5

bl.9

b2.2

1.8

1.8

2.0

bl.5

bl.2

bl.7

*2.4

2.1

2.1

2.1

2.1

2.1

2.1

2.4

2.2

b2.6

bZ.O

2.1

bl.9

b2.0

b2.1

bl.9

bl.8

bl.8

2.1

-

58.9

1.96

117

Dec.

b2.5

b2.2

b2.1

b275

b2.8

b2.5

b2.2

b2.5

b2.8

b2.5

b2.8

b2.9

3.0

370

2.8

2.8

2.8

2.6

*2.6

2.6

2.6

2.6

2.6

2.6

2.6

3.0

3.0

3.0

3.0

2.8

3.0

83.3

2.69

165

Jan.

"274 2.8

2.2

2.4

2.6

2.4

2.2

2.1

*2.0

1.8

1.8

1.8

1.7

T7T

1-7

1.1.

1.

1.1.

1.7

1.7

1.8

1.8

1.8

1.8

1.7

1.8

1.8

1.7

1.7

59.4

1.92

118

Feb.

1.8

1.8

1.8

1.8

1.8

1.7

T77

1.8

2.1

2.2

2.2

*2.2

2.2

2.1

2.1

2.1

2.2

2.4

2.4

2.4

2.6

2.6

2.6

2.6

2.6

2.6

"278 2.8

-

-

62.0

2.21

123

Mar.

2.8

2.8

3.0

3.0

3.0

3.2

3.2

3.2

3.4

374

3.4

3.2

*3.2

3.4

3.0

3.0

3.4

3.0

3.0

3.0

2.8

2.8

2.8

2.6

2.8

b2.6

2.4

2.4

2.6

2.4

2jl2

91.0

2.94

180

Apr.

2.4

2.4

3.0

3.0

2.6

2.1

2.2

*2.2

2.4

2.4

2.8

2.6

2.8

3.4

3.8

b3.5

b4.1

4.4

4.6

5.1

5.7

5.5

6.2

7.2

5.5

7.0

6.2

7.8

9.2

S74

-

130.5

4.35

259

May

7.0

6.2

672

8.1

12

16

*22

23

20

19

28

36

35

30

32

44

55

58

76

94

86

91

114

107

103

120

163

187

TeT

158

151

2,068.5

66.7

4,100

June

114

94

86

76

75

*79

87

94

94

92

91

91

92

97

110

136

158

T5o" 190

*171

187

158

139

129

127

124

119

114

103

97

-

3,518

117

6,980

July

89

84

91

75

*S8

S4

61

55

*49

44

39

35

32

30

27

30

30

26

23

23

23

20

19

18

18

16

14

14

13

13

14

1,160

37.4

2,300

Aug.

14

14

14

13

12

11

11

9.2

8.9

8.6

8.4

7.8

7.5

7.2

7.2

7.0

7.0

6.7

6.7

*9.6

8.4

7.8

7.0

6.7

6.4

6.2

5.7

5.7

6.0

6.4

5.5

262.6

8.47

521

Sept.

5.1

4.9

4.9

4.6

4.2

4.2

4.0

4.0

4.0

5.6

4.0

*4.9

4.2

4.0

3.8

3.8

3.8

3.6

4,0

3.8

5.7

575

5.3

4.6

4.4

4.2

4.2

4.2

5.7

4.6

-

131.8

4.39

261

Calendar year 1950 : Max 160 Min 1.2 Mean 15.9 Ac-ft 11,520

Water year 1950-51 : Max 190 Min 1.2 Mean 21.1 Ac-ft 15,240

Peak discharge (base. 150 efs). May 27 (7:30 p.m.) 224 cfs (4.77 ft); June 19 (6 p.m.) 234 cfs 

(4.83 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
64 EAGLE RIVER BASIN

Gore Creek near Minturn, Colo.

Location. Lat 39°37 I 05", long. 106°26'00", in SWij sec. 14, T. 55., R. 81 W., on right 

bank: at private bridge, 1 mile upstream from mouth and 2 miles north of Minturn.

Drainage area.--100 sq mi.

Records available. July 1911 to September 1914 (fragmentary gage heights and discharge 

measurements), May 1944 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,780 ft (from topographic map). July 

15, 1911, to Sept. 30, 1914, staff gage at site 1 mile downstream at different datum.

Average discharge.--? years (1944-51), 137 cfs.

Extremes. Maximum discharge during year, 1,370 cfs June 18 (gage height, 4.76 ft), from 

rating curve extended above 1,100 cfs; minimum not determined.

1944-51: Maximum discharge, that of June 18, 1951; minimum not determined.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Small diversions for irrigation of hay meadows above station.

Rating table, water year 1950-51, except period of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

2.1

2.6

61

135

3.5 

4.0

250

490

820

1,400

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

31

28

28

26

26

26

26

25

24

24

24

24

23

23

23

23

22

22

22 

22

21

21

21

21

20

23

20

20

20

733

23.6

1,450

Mov.

20

21

19

22

21

22

21

21

*20

16

19

21

19

19

19

19

20

19

21

19

20 

21

20

21

21

21

22

19

19

21

603

20.1

1,200

Dec.

20

(»)

620

20

1,230

Jan.

(»)

19

589

19

1,170

Feb.

21

(»)

_

-

588

21

1,170

Mar.

(*)

20

620

20

1,230

Apr.

19

21

23

23

21

19

18

18

17

17

19

18

*16

19

26

25

32

36

39

41

51 

50

53

68

61

71

65

80

96

87

1,149

38.3

2,280

May

72

63

61

72

102

135

*153

177

166

146

169

215

209

209

203

243

286

298

335

400

380 

380

472

490

425

478

638

890

904

855

_911

10,543

340

20,910

June

806

631

520

430

390

*395

420

496

508

538

490

460

490

598

701

876

995

1,190

1,090

*1,070

1,200 

1,080

911

890

953

1,010

967

939

876

834

22,754

758

45,130

July

799

806

806

820 750-

687

729

687

610

*538

502

490

430

405

385

375

448

370

340

340

385 

322

258

240

226

212

206

209

197

191 225

13,992

451

27,750

Aug.

209

194

T9~4 215

200

180

163

146

132

121

113

110

105

100

98

93

87

80

*76

90

108 

92

83

79

72

66

62

60

60

72

61

3,521

114

6,980

Sept.

54

19

46

44

41

39

39

38

36

35

35

*39

37

35

32

31

30

29

30

29

36 

35

33

31

29

28

27

Tf

35

32

-

1,061

35.4

2,100

Calendar year 1950: Max 9OO Mln - Mean 114 Ac-ft 82,190

Water year 1950-51: Max 1,200 Mln - Mean 156 Ac-ft 112,600

Peak discharge (base, 900 efs). May 28 (9 p.m.) 1,100 cfs (4.4O ft); June 18 (l a.m.) 1,370 cfs 

(4.76 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 10 to Apr. 16 (stage-discharge relation affected by Ice during 

most of period); discharge estimated on basis of 5 discharge measurements, weather records, and records for nearby stations.
EAGLE RIVER BASIN 65

Brush Creek near Eagle, Colo.

Location. Lat 39°33'40", long. 106°46'20", in SEi sec. 1, T. 6 S., R. 84 tf., on left 

bank, 150 ft downstream from Beecher Creek, It miles downstream from confluence of 

East and West Brush Creeks, and 1\ miles southeast of Eagle.

Drainage area.--71 sq mi, approximately.

Records available.--October 1950 to September 1951.

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during year, 294 cfs June 21 (gage height, 3.70 ft); maximum 

 gage" height, 3.79 ft Feb. 3 (backwater from ice); minimum daily, 14 cfs Feb. 1, Mar. 

3, 4.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wTTTch are fair. Small diversions for irrigation of hay meadows above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to July 16 July 17 to Sept. 30

2.2 

2.4 

2.7 

3.0 

4.0 390

2.5 

2.8 

3.1 

3.5

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

a35

a36

a38

a37

a35

a34

a32

a31

a3C

*3C

31

32

29

28

29

23

28

28

28

28

27

27

26

25

25

25

24

24

24

23

24

901

29.1

1,790

Nov.

24

24

24

24

24

25

24

a24

a23

a?-l

a23

a23

*24

24

24

23

24

24

26

25

2'5

25

25

24

24

24

24

24

24

24

-

721

24.0

1,430

Dec.

24

22

21

24

23

b!9

24

24

24

22

22

22

22

22

21

22

*21

21

21

21

21

20

20

21

20

20

20

20

20

20

20

664

21.4

1,320

Jan.

20

20

20

20

20

b!9

bl8

b!7

b!7

b20

20

*20

20

20

19

19

19

19

19

19

b!7

18

18

18

18

18

18

18

18

18

b!7

581

18.7

1,150

Feb.

b!4

b!6

b!7

18

18

18

17

17

17

17

18

a!9

al8

al8

*a!7

16

16

16

16

16

16

16

15

15

15

16

16

15

.

-

463

16.5

918

Mar.

16

16

14

14

15

15

15

16

16

16

16

*16

16

16

16

16

16

16

16

16

17

17

16

17

17

17

17

17

17

17

17

499

16.1

990

Apr.

17

17

18

19

20

18

18

18

*18

18

17

18

18

20

21

21

23

24

24

24

25

24

25

28

28

28

26

28

29

28

-

660

22.0

1,310

May

26

24

24

26

31

35

*38

42

39

35

37

42

41

37

36

44

51

52

46

61

59

58

61

66

61

65

90

135

150

132

144

1,788

57.7

3,550

June

121

97

82

66

*5jj

57

70

95

92

106

99

*85

83

103

121

156

192

198

186

*224

224

183

174

174

183

159

153

127

127

130

-

3,923

131

7,780

July

118

108

116

121

113

106

110

116

106

99

83

*88

83

77

71

85

153

85

68

64

65

64

58

52

50

47

51

51

50

48

52

2,558

82.5

5,07O

Aug.

64

58

62

58

57

52

47

42

40

37

35

31

29

*30

31

29

29

28

29

35

41

38

36

35

35

33

31

31

33

33

32

1,201

38.7

2,380

Sept.

31

30

29

31

31

31

31

32

31

29

30

31

30

*28

28

27

27

26

26

26

28

26

26

26

26

26

26

25

26

25

-

845

28.2

1,680

Calendar year 1950 : Max - Min - Mean - Ac-ft -

Water year 1950-51 : Max 224 Min 14 Mean 40.6 Ac-ft 29,370

Peak discharge (base. 160 cfs).--May 29 (3 a.m.) 171 cfs (3.31 ft); June 21 (2:30 a.m.) 294 cfs 

(3.70 ft); July 17 (1:30 a.m.) 291 cfs (3.69 ft).

* Discharge measurement made on this day.

a No gage-height record (stage-discharge relation affected by ice during part of periods); discharge estimated on basis of 1 discharge measurement, weather records, recorded range in stage, and 

records for nearby stations.

b Stage-discharge relation affected by ice.
66 EAGLE RIVER BASIN

Location. Lat 39°33', long. 106°56', in sec. 9, T. 6 S., R. 85 W., on left bank 1 mile

 upstream from Sundell Creek and 7 miles south of Gypsum.

Drainage area.--63 sq mi, approximately.

Records available.--October 1950 to September 1951.

Gage.--Water-stage recorder.

Extremes.--Maximum discnarge during year, 256 cfs June 21 (gage height, 4.04 ft); maximum 

gage height, 4.08 ft June 22; minimum daily discharge, 14 cfs Feb. 1.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 wfiTch are fair. Water supply for town of Gypsum obtained from tributary about 1 mile 

upstream. Small diversions for irrigation of hay meadows above station.

Rating tables, water year 1950-51, except periods of loe effect

(gage height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used June 22, 23)

Oct. 1 to June 23

2.4

2.7

2.8 

3.0 

4.0

63

248

June 24 to Sept. 30

2.9 22

3.0 30

3.3 73

3.9 186

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

28

30

29

28

27

26

25

25

25

25

25

*24

24

24

24

24

23

23

23

23

23

23

23

23

22

22

22

22

22

22

756

24.4

1,500

Nov.

22

22

21

22

21

22

22

21

21

II

19

20

20

*20

20

20

20

20

23

21

22

22

21

20

22

21

21

20

20

20

-

624

20.8

1,240

Dec.

21

20

b!9

21

20

b!7

b!9

22

22

21

20

21

21

21

21

20

*20

b20

20

21

18

b!8

b!8

bis bis

18

18 bis

18

18

18

605

19.5

1,200

Jan.

18 bis

bis

18

18

18

b!7

b!6

b!7

b!8

19

*21

21

21

21

21

21

21

21

20

18

20

19

19

19

19

19

19

19

19

19

592

19.1

1,170

Feb.

14

16

18

19

19

19

18

18

18

18

18

19

18

18

*b!8

b!8

b!8

17

17

17

17

17

17

17

17

16

16

16

_

-

488

17.4

968

Mar.

15

16

16

18

18

IS

16

17

18

17

17

*16

18

18

18

18

17

16

16

17

18

17

16

16

17

18

18

17

16

17

16

524

16.9

1,040

Apr.

17

17

17

17

IB

17

17

16

*16

16

17

16

16

18

19

19

20

20

20

20

22

21

22

22

21

21

20

20

21

20

-

563

18.8

1,120

May

20

18

18

18

19

20

*20

20

19

18

18

IB

17

16

16

16

16

16

16

17

18

18

19

20

20

22

27

40

56

58

62_

716

23.1

1,420

June

65

57

48

42

*39

38

40

45

50

54

56

*54

57

63

68

81

109

148

163

*194

226

218

192

166

166

160

156

156

150

142

-

3,203

107

6,350

Calendar year 1950: Max - Mln - Mean - Ac-ft -

July

134

117

108

101

95

92

85

78

71

68

63

*60

57

54

52

51

51

46

45

44

46

45

42

41

40

40

41

42

40

.sa

38

1,925

62.1

3,820

Aug.

38

40

41

38

38

37

37

36

35

35

34

34

34

34

*32

32

32

32

31

36

36

34

32

32

32

31

31

31

32

34

31

1,062

34.3

2,110

Sept.

31

23

23

23

23

23

23

23

27

23

23

27

27

23

*27

23

23

23

23

26

23

23

25

24

24

24

23

24

23

24

-

801

26.7

1,59T

Water year 1950-51: Max 226 Mln 14 Mean 32.5 Ac-ft 23,530

Peak discharge (base. 100 cfs).--June 21 (5 a.m.) 256 cfs (4.04 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 1-12, Nov. 10-13, Jan. 11 to Feb. 14 (stage-discharge relation 

"fected by ice during part of periods); discharge estimated on basis of 1 discharge measurement,

weather records, and records for nearby stations
EAGLE RIVER BASIN 67

Eagle River below Gypsum, Colo,

Location. Lat 39°39 I , long. 106°57', in M^ sec. 5, T. 55., R. 85 W., on right bank 30 ft 

downstream from bridge on U. S. Highways 6 and 24 at Gypsum and 150 ft downstream from 

Gypsum Creek.

Drainage area. 957 sq mi.

Records available.--October 1946 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,270 ft (from railroad elevations).

Average discharge.--5,years; 647 cfs.

Extremes. Maximum discharge during year, 4,840 cfs June 21 (gage height, 8.19 ft); minimum 

dally, 130 cfs Feb. 1.

1907-9, 1946-51: Maximum discharge observed, 5,720 cfs June 20, 1909 (gage height, 

7.72 ft, site and datum then in use), discharge measurements; minimum daily, 60 cfs Dec. 

19, 1907, but may have been less during periods of ice effect.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, 

which are fair. Transmountain diversions above station, seepage 340. Many small diversions for irrigation of hay meadows above station. Records of chemical analyses and 

water temperatures for the water year 1951 are given in Water-Supply Paper 1200.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

3.0 

3.4 

3.8

145 

25O 

425

5.0 

7.0 

8.0

1,220

3,200

4,550

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

258

282

274

270

*270

258

250

250

247

244

241

235

226

223

220

220

211

208

205

205

202

193 1'90

T90~

193

196

196

196

202

199

199

6,953

224

13,790

Nov.

193

2T4

a220

a230

a230

a230

a220

a220

a210

a 200

a210

a220

238

*238

238

223

232

241

254

250

250

262

247

238

226

226

226

220

214

217

-

6,837

228

13,560

Dec.

226

220

188

223

220

"208 165

247

244

226

226

229

*226

217

217

217

205

185

208

214

199

182

178

180

188

190

185

172

193

196

205

6,379

206

12,650

Jan.

190

182

185

190

196

172

a!65

150

a!70

a200

a!90

*b!90

alSO

a 190

a200

b!90

b!90

b!90

b!90

blSO

196

220

208

193

185

185

199

185

175

159

a!4O

5,735

185

11,380

Feb.

a!30

alSO

a!60

190

190

180

180

185

175

180

180

*188

175

b!60

b!70

blSO

blSO

blSO

178

180

170

182

188

185

180

170

172

172

_

_

-

4,910

175

9,740

Mar.

161

172

172

161

*165

196

205

a210

a220

226

208

178

185

185

185

185

178

165

165

182

182

193

182

178

185

196

202

188

178

182

182

5,752

186

11,410

Apr.

IBS

185

188

202

226

220

211

196

*202

193

178

175

172

185

202

223

247

286

306

310

348

375

362

469

447

469

436

464

570

558

-

8,790

293

17,430

May

469

405

375" 362

469

702

821

961

940

*828

842

1,020

1,120

996

863

989

1,160

1,250

1,440

1,750

1,770

1,630

1,800

1,970

1,720

1,760

2,160

2,920

5,240

2,760

2,970

42,462

1,370

84,220

June

2,710

2,240

1,910

1,630

1,410

1.570

*1,440

1,690

1,720

1,810

1,760

1,600

1,640

1,830

2,070

2,500

3,160

3,750

*5,670

5,840

4,550

4,030

3,150

2,850

2,940

3,230

3,080

3,040

2,780

2,740

-

75,880

2,529

150,500

July

2,570

2,410

2,460

2,490

2,460

2,060

2,160

2,180

1.930

1,780

1,510

*1,570

1,470

1,350

1,500

1,250

1,840

1,460

1,510

1,260

1,570

1,320

1,110

996

919

856

835

926

954

856

919

47,881

1,545

94,970

Aug.

996

940

1.010

947

912

8O7

716

648

600

546

510

469

*436

400

566

559

518

506

302

330

405

375

330

322

330

310

290

282

278

322

344

15,486

500

30,720

Sept.

322

298

286

282

274

266

250

241 2'32

229

229

232

241

238

*22S

214

208

208

205

196

223

226

217

211

202

193

190

190

226

226

-

6,981

233

13,850

Calendar year 1950: Max 3,410 Mln 149 Mean 534 Ac-ft 386,300

Water year 1950-51: Max 4,330 Mln 130 Mean 641 Ac-ft 464,200

Peak discharge (base, 5,500 efs).--May 29 (6 a.m.) 3,600 cfs (7.31 ft); June 21 (12 m.) 4,840 cfs 

(8.19 ft); June 26 (8 a.m.) 3,510 cfs (7.24 ft).

* 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.
68 COLORADO RIVER MAIN STEM

Colorado River near Dotsero, Colo.

Location. Lat 39°39', long. 107°05', In sec. 6, T. 5 S., R. 86 W., on left bank about 500 

 i't south of U. S. Highways 6 and 24, \\ miles west of Dotsero, and If miles downstream 

from Eagle River.

Drainage area. 4,390 sq ml, approximately.

Gage.--Water-stage recorder. Altitude of gage Is 6,130 ft (from topographic map).

Records available. December 1940 to September 1951

Average discharge. 11 years (1940-51), 2,287 cfs.

Extremes. Maximum discharge during year, 13,500 cfs June 22 (gage height, 9.52 ft); mlnlmum daily, 590 efs Jan. 7.

1940-51: Maximum discharge, 16,100 cfs May 22, 1948 (gage height, 10.24 ft); minimum dally, 350 cfs Jan. 5, 1944.

Remarks. Records excellent except those for periods of Ice effect or no gage-height record, 

winch are good. Flow affected by tranemountaln diversions, storage reservoirs, power 

developments, and diversions for irrigation,

Cooperation. Gage-height record furnished by The Public Service Co. of Colorado.

Rating table, water year 1950-51, except period of loe effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.4 

2.0 

3.0 

5.0

595

865

1,630

4,000

7.0 

9.0 

9.3

7,400

12,000

12,800

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2 

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26 

27

28

29

30

31,

Total

Mean

Ac- ft

Oct.

944 

944 

910

986 "356

*891

835 

817

682

780

951

811

746

682

674

674

646

755

678

653

650

642 

765

623 sir

702 

823

853

750

682

658

23,840

769

47,290

Nov.

690 

638 

7/90"

859

775

666

728 

853

1,140

1,010

898

853

800

780

898

755

780

951

904

805

1,060

1,260 

1,036

*924 

795

841

746

710

924

872

-

25,635

854

50,850

Dec.

823 

835 

674

'S55" 642 

755

847 

917

872

841

917

755

930

1,060

1.100

1,040

*847

865

979

1,070*

958

1,000 

993

924 

790

898 

750

b950

bl.OOO

bl,020

951

27,693

893

54,930

Jan.

829 

865 

965

bl,010 

b980

924

b590 b6~5C"

740

960

900

920

880

780

780

1,050

1,200

1,150

1,100

1,150

900

900 

1,100

1,220 

1,200

1,200 

1,200

1,100

900

1,050

1,120

30,313

978

60,120

Feb.

1,050 

940 

1,100

1,000 

1,080

1,150

1,550 

1,280

1,180

1,100

1,010

1,000

1,080

960

1,020

980

980

900

840

950

1,040

1,020 

944

1,040 

847

702 

598

1,040

_

-

28,481

1,017

56,490

Mar.

859 

1,150 

1,100

737 

«719

910

904 

944

965

986

891

780

1,O6O

1,040

930

878

841

746

800

1,080

1,040

898 

829

855 

823

742

775

1,000

1,020

930

865

28,057

905

55,650

Apr.

805 

8T7 

979

986 

1,190

1,220

1,180 

1,020

*1,140

1,050

1,050

1,110

1,070

1,060

1,080

1,280

1,440

1,660

1,870

1,870

2,120

1,950 

1,680

2,110 

2,700

2,940 

2,940

2,920

3,050

5.200

-

49,467

1,649

98,120

May

3,170 

2,750 

2,560

2,540 

2,730

5,210

5,580 

4,240

4,460

4,520

4,150

4,020

4,050

4,030

4,090

*4,030

4,540

4,890

5,530

6,350

6,880

7,340 

7,540

7,860 

7,780

7,840 

8,540

9,770

10,600

1'0,4°0

10,400

174, 170

5,618

345,500

June

10,100 

 9,280 

8,560

7,560 

6,800

6,250

*6,030 

6,210

6,250

6,280

6,300

6,120

5,890

5,940

6,140

7,080

8,220

9,420

10,300

11,100

12,300

12,800 

10,700

9,130 

8,680

8,820

8,660

8,340

7,720

7,460

-

344,240

8,141

484,400

July

6,890 

6,340 

6,230

5,920 

5,550

5,230

5,180 

4,890

4,490

4,280

5,900

3,920

*3,800

3,680

3,570

3,550

4,300

4,540

4,510

3,890

3,750

4,210 

4,140

3,750 

5,270

3,070 

3,100

5,080

5,180

5,080

5^050

132,340

4,269

262,500

Aug.

3,020 

2,800 

3,090

5.250 

5,120

2,960

2,820 

2,680

2,600

2,510

2,350

1,770

1,680

1,730

*1,680

1,650

1,520

1,400

1,220

1.190

1,630

1,780 

1,730

1,580 

1,610

1,400 

1,280

1,540

1,690

1,840

1,870

62,990

2,032

124, 900

Sept.

1,820 

1,540 

1,400

1,300 

1,350

1,310

1,280 

1,280

1,240

1,280

1,130

1,060

1,130

1,130

*1,210

1,120

1,320

1,400

1,320

1,130

1,280

1,250 

1,100

1,120 

1,130

1,060 

1,090

1,080

1,160

1,240

-

37,260

1,242

73,900

Calendar year 195O : Max 8,260 Mln 623 Mean 1,835 Ac-ft 1,329,000

Water year 1950-51 : Max 12,800 Mln 590 Mean 2,368 Ac-ft 1,715,000

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Jan. 9 to Feb. 20 (stage-discharge relation affected by Ice during 

most of period); discharge estimated on basis of records for station at Qlenwood Springs.
COLORADO RIVER MAIN STEM 69

Colorado River at Glenwood Springs, Colo.

Location.--Lat 39°33', long. 107*19', in sec. 9, T. 6 S., R. 89 W., on right bank 10 ft 

J,rom " s; Highways 6 and 24, at power plant at Glenwood Springs, and half a mile upstream 

trom Roaring Pork.

Drainage area. 4,560 sq mi, approximately.

Records available. May 1899 to September 1951. Prior to October 1918, published as Grand 

rtiver at tuenwood Springs.

Gage. Water-stage recorder. Datum of gage is 5,720.71 ft above mean sea level, adjustment 

of 1912. Prior to Jan. 1, 1900, wire-weight gage at railroad bridge Just above Roaring 

Fork at different datum.

Average discharge. 52 years, 2,878 cfs.

Extremes. Maximum discharge during year, 14,400 cfs June 21 (gage height, 8.87 ft) {minimum 

daily, 484 cfs Jan. 7.

1899-1951: Maximum discharge, 30,100 cfs June 14, 15, 1918 (gage height, 12.55 ft); 

minimum dally, 286 cfs Jan. 22, 1935.

Remarks. Records excellent except those for periods of no gage-height record, which are 

goon. Flow affected by transmountain diversions, storage reservoirs, power developments, 

and diversions for irrigation. Low flow regulated by Shoshone power plant 6 miles above 

station*

Revisions (water years). W 617: 1900-1909 (monthly summaries only).

Rating table, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second)

2.7 450

3.0 610

3.5 1,010

4.0 1,540

5.0 2,920

6.0 5,100

8.0 11,200

9.0 14,900

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1 

2 

3 

4 

5

6

7

8 

9

10

11

12 

13

14

15

16 

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

847 

1.090 

960 

960 

1,070

*1,000

865

838 

712

656

990

1,020 

780

615

648

651 

642

796

694

645

603

693

694

750

530

637

938

919

1,040

596

640

24,519

791

48,630

Nov.

672

706 

586 

847 

936

648

658

840 

1,070

al,140

al,000

1,020 

760

845

900

884 

753

929

1,110

790

900

1,290

1.410 

*l,lOO

780

892

733

693

866

987

-

26,745

892

53,050

Dec.

937 

826 

780 

599 

7530"

670

722

940 

856

990

988

824 

772

1,220

1,160

*1.240 

1,070

860

990

1,080

1,070

1,000

970 

856

a 6 80

a675

a690

a 900

3960

al,010

1,040

28,005

903

55,550

Jan.

874 

713 

712 

1,010 

1,030

780

484

575 

610

855

1,000

950 

*990

863

781

780 

1,150

1,230

1,200

1,220

1,090

838

910 

1,230

1.260

1,260

1,230

1,260

1,160

791

1,110

29,946"

966

59,400

Feb.

1,180 

990 

933 

1,160 

975

1,060

1,150

1.450 

1,3'iO

1,140

1,140

998 

974

1,140

930

*1,040 

1,030

1,060

865

820

1,060

1,150

960 

1,110

1,070

748

H?

1,010

_

_

-

29,267

1,045

58,050

Mar.

950 

1,070 

1.230 

1/030 

591

*910

883

1,070 

970

1,070

950

892 

838

1,190

1,030

863 

1,020

793

836

868

1,170

1,020

930 

883

930

780

726

970

865

950

901

29,179

941

57,880

Apr.

930 

829 920" 

1,000 

1,260

1,290

1,330

1,220 

920

1,110

1,090

*1,200 

1,130

1,070

1,160

1,290 

1,550

1,720

*1,970

2,010

2,220

2,110

1,880 

2,210

2,760

3,230

3,210

3,170

3,300

3,500

-

52,589

1,753

104,300

May

3,410 

3,010 

2,700 

2,680 

2,840

3,350

3,880

4,680 

4,970

4,920

4,760

4,660 

4,630

4,630

4,560

*4,390 

4,920

5,280

5,860

6,890

7,820

7,940

8,420 

8,420

8,420

8,540

9,540

11,000

12.000

11,600

11,500

192,220

6,201

381,300

June

11,000 

10,300 

9,220 

8,300 

7,520

7,070

6,980

7,160 

7,160

7,160

*7,100

6,860 

6.620

6,740

6,920

8,000 

9,120

10,500

*11,300

12,200

13,500

15,800

11,600 

10,000

9,480

9,570

9,350

8,960

8,360

8,000

-

270,050

9,002

535,600

July

7.520 '6,95^0 

6,740 

6,500 

6,030

5,750

5,560

5,310 

4,840

4,630

4,200

4,220 

*4,120

3,970

3,840

3,810 

4,660

4,840

4,920

4,360

3,970

4,510

4,460 

4,170

3,810

3,300

3.230

3,390

3,390

3,300

3,260

143,560

4,631

284,700

Aug.

3,420 

3,010 

3,280 

5.480 

3,320

3,170

2,990

*2,860 

2,760

2,680

2,570

1,880 

1,780

1,780

1,780

1,730 

1,640

1,500

1,460

1,310

1,510 i.seo

1,890 

1,750

1,690

1,580

1,430

1,450

1,580

1,720

1,810

66,690

2,151

132,300

Sept

1.720 

1,540 

1,360 

1,260 

1,220

1,220

1,180

1,170 

1,130

1,100

1,190

1.020

1,180

1,300

1,220

1,320 

1,340

*1,430

1,500

1,400

1,350

1,400

1,400 

1,310

1,220

1,220

1,200

1,230

1,230

1,390

-

38,750

1,292

76,860

Calendar year 1950: Max 9,120 Mln 530 Mean 2,015 Ac-ft 1,458,000

Water year 1950-51: Max 13,800 Mln 484 Mean 2,552 Ac-ft 1,848,000

* Discharge measurement made on this day.

a No gage-height record} discharge estimated on basis of records of Shoshone power plant 6 miles 

upstream.

256684 O - 53 - 6
70 ROARING PORK BASIN

Roaring Fork at Aspen, Co3o.

Location. Lat 39°11'20", long. 106°48'55", In sec. 7, T. 10 S. , R. 84 W., on right bank

 at Aspen, three-quarters of a mile upstream from Hunter Creek.

Drainage area. 109 sq mi.

Records available. October 1910 to September 1921 and January 1934 to September 1951 in

 reports of ideological Survey. January 1911 to September 1921 and April 1932 to September 1951 in reports of State engineer. Records since Nay 24, 1935, equivalent to earlier records if flow through Twin Lakes tunnel is added to flow past station.

Gage. Water-stage recorder at present site since Oct. 6, 1935. Datum of gage is 7,884.58

 ^-ft above mean sea level, datum of 1929. Jan. 1, 1911, to Feb 23, 1915, staff gage at 

bridge 1,800 ft upstream at different datum. Peb. 24, 1915, to Sept. 30 1921, staff 

gage and Apr. 24, 1932, to Oct. 5, 1935, water-stage recorder at bridge hall a mile 

downstream at different datum.

Average discharge. 30 years (1910-21, 1932-51), 156 cfs, including diversion by Twin 

Lakes tunnel.

Extremes. Maximum discharge during year, 780 cfs June 20 (gage height, 3.90 ft); minimum

al19io-21, C 1932-5l! Maximum discharge, 3,170 cfs June 18, 1917 (gage height, 7,2 ft, 

site and datum then in use, from floodmarks), from rating curve extended above 1 200 

cfs; minimum daily prior to construction of Ttfin Lakes tunnel ,15 cfs July 15, 16, 

1934; minimum daily since diversion through Twin Lakes tunnel began, 3.2 cfs Aug. 15, 

1940.

Remarks Records good except those for periods of ice effect or no gage-height record, 

which ar,e fair Transmountain diversion at point 15 miles upstream through Twin Lakes 

tunnel to Arkansas River basin since May 24, 1935 (see p.340 ). Head gate of Salvation 

ditch, which diverts water for irrigation of about 2,100 acres below station is located a short distance upstream.

Ratirig table, iwater year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.0 8.0

1.3 19

1.5 32

1.8 

2.0 

2.5

65

95

190

3.0 

3.5 

4.0

340

560

840

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

35

39

40

38

36

34

*32

31

31

31

31

31

28

25

26

27

27

26

26

26

26

26

26

25i

25

24

24

24

24

24

24

892

28.8

1,770

Nov.

24

24

22

26

23

27

26

25

24

b21

1)22

1)23

24

25

25

*b24

26

25

28

26

28

27

26

24

25

25

24

24

24

24

-

741

24.7

1,470

Dec.

25

1)24

b25

b26

b24

b20

b24

b26

b26

b24

b24

28

27

27

27

*26

26

b22

b24

24

b22

b22

b?2

b23

b22

b22

b22

b21

b23

b23

b23

744

24.0

1,480

Jan.

b23

b22

b23

b23

b23

b21

18

17

T9

22

22

22

21

20

*21

21

20

20

20

19

18

21

21

20

20

19

19

20

21

19

18

633

20.4

1,260

Peb.

16

18

20

22

23.

22

22

20

20

20

21

21

*20

20

19

20

21

21

21

21

20

21

21

21

21

20

21

21

_

_

-

574

20.5

1,140

Mar.

20

22

21

20

22

22

22

22

23

21

*21

20

21

21

21

21

20

19

21

20

20

21

20

20

21

23

24

22

20

20

21

652

21.0

1,290

Apr.

21

20

21

24

25

22

22

24

23

23

21

*21

21

24

28

30

35

39

40

41.

46

45

50

60

53

60

55

63

Zi

63

-

1,096

36.5

2,170

May

54

48

45

54

70

110

128

*156

164

146

164

190

198

172

154

170

212

249

243

288

255

238

249

270

235

246

333

447

496

478

470

6,732

217

13,350

June

400

305

258

225

225

258

291

333

344

*316

270

255

288

326

348

412

*535

585

575

660

506

580

447

372

380

400

404

388

340

291

-

11,317

377

22,450

July

267

333

635

478

340

198

184

174

158

144

130

123

112

107

*98

98

97

97

88

88

105

86

80

107

80

71

72

71

80

64

64

4,829

156

9,580

Aug.

58

65

94

76

76

59

53

48

*44

41

38

34

32

29

28

26

28

27

28

40

33

32

31

27

27

24

23

22

22

25

22

1,212

39.1

2,400

Sept.

20

19

17

17

16

15

13

13

13

12

11

15

15

14

13

12

*11

11

18

14

14

12

11

9.5

9.2

8.6

8.3

9.2

14

13

-

397.8

13.3

789

Calendar year 1950: Max 480 Mln 6.5 Mean 68.0 Ae-ft 49,240

Water year 1950-51: Max 660 Mln 8.3 Mean 81.7 Ac-ft 59,150

Discharge measurement made on this day,

 . 9 (stage-discharge relation affected by ice during part 

2 discharge measurements, weather records, and records
ROARING PORK BASIN 71

Hunter Creek near Aspen, Colo.

Location. Lat 39°12i, long. 106°48', in SW£ sec. 5, T. 10 S., R. 84 W., on right bank 60 

rt upstream from head gate of Red Mountain ditch, 100 ft upstream from road bridge, lj 

miles upstream from mouth, and If miles northeast of Aspen.

Drainage area. 40 sq mi, approximately.

Records available. June 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,600 ft (from topographic map).

Extremes. Maximum discharge during year, 574 cfs June 21 (gage height, 6.17 ft), from 

rating curve extended above 320 cfs by velocity-area studies; minimum not determined.

1950-51: Maximum discharge, 592 cfs June 6, 1950 (gage height, 6.22 ft), from rating 

curve extended above 320 cfs by velocity-area studies;iminimum not determined.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are poor. Several small diversions above station for irrigation of hay meadows 

above and below station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to June 30

3.2 

3.5 

3.9

July 1 to Sept. 30

7.0

14

30

4.3 68

5.0 226

6.0 515

3.2 

3.4

4.0

4.2 52

4.5

11

4.6 132

5.0 226

6.0 515

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

11

13

15

13

14

14

*13

12

12

9.2

9.5

9.2

9.2

9.5

10

11

12

12

12

11

11

10

10

10

10

10

10

9.8

9.5

9.2

9.5

340.6

11.0

676

Nov.

9.5

10

B.8

~9.8 11

11

10

10

9.5

1.6

9.2

9.6

10

9.5

9.5

9.2

8.8

9.5

9.8

9.8

10

9.8

9.5

*8.6

9.2

9.3

9.2

9.0

9.0

9.2

-

385.9

9.53

567

Dec.

9.5

9.2

9.6

9.8

9.1

8.2

9*2

10

T5

10

9.5

9.2

9.2

9.2

9.2

8.8

9.2

10

9.2

8.8

8.6

8.4

8.2

8.4

8.4

8.3

 875 8.1

8.6

8.8

8.6

279.6

9.02

555

Jan.

7.6

235.6

7.6

467

Feb.

7.2

_

_

-

201.6

7.2

400

Mar.

7.0

217.0

7.0

430

Apr.

7.2

77?

7.8

8.4

8.4

8.0

8.0

8.4

8.2

8.2

8.0

7.8

7.8

7.8

10

12

14

15

16

*17

19

20

23

29

24

29

26

33

41

32

471.4

15.7

935

May

27

24

 55 23

42

66

82

*95

72

57

78

112

101

78

78

119

159

176

185

207

192

190

202

202

183

214

278

360 352"

349

346

4,675

151

9,270

June

273

209

180

159

T5F

214

247

278

281

*252

214

214

239

268

278

349

*417

396

381

405

429

351

332

307

315

332

312

299

286

255

8,668

289

17,190

July

242 ?2"9~

226

226

200

17H

180

164

136

121

112

108

95

84

*78

90

86

76

74

68

74

51

50

62

45

41

41

40

42

40

38

3,295

106

6,540

Aug.

37

50

56

52

45

36

33

31

*29

27

25

23

21

21

20

19

18

17

17

19

23

21

19

19

19

17

16

14

T§

18

15

792

25.5

1,570

Sept.

13

T?

11

10

9.2

8.6

8.2

8.0

7.8

7.6

8.6

11

10

9.6

8.2

7.6

*6.9

6,3

6.0

6.0

8.2

6.9

6.6

6.3

6.0

5.4

4.8

57T

11

11

-

246.9

8.23

490

Calendar year 1950: Max - Min - Mean - Ac-ft -

Water year 1950-51: Max 429 Min - Mean 54.0 Ac-ft 39,090

Peak discharge (base, 450 cfs). May 30 (9 p.m.) 477 cfs (5.89 ft): June 21 (9 p.m.) 574 cfs (6,17

ft).

* Discharge measurement made on this day.

Hote . Stage-discharge relation affected by Ice Hov. 10-12, 16, 17, 21-30, Dec. 2-8, 17-19, 21-29.

Ho gage-height record Jan. 1 to Apr. 19 (stage-discharge relation affected by ice during part of

period), July 26 to Aug. 8, Sept. 6-16j discharge estimated on basis of weather records, recorded

range in stage, and records for nearby stations.
72 ROARING FORK BASIN

Fryingpan Creek at Norrie, Colo.

Location. Lat 39°20', long. 106°40', in NE-ir sec. 28, T. 8 S., R: 83 W., on right bank 300 

ft south of State Highway 104 at Norrie, 1 mile upstream from North Fork, and 2 miles 

downstream from Chapman Gulch.

Drainage area. 89.5 sq mi.

Records available.--October 1910 to March 1917, October 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,410 ft (from river-profile map). Feb. 

 11, 1911, to Mar. 31, 1917, staff gage 200 ft upstream at different datum.

Average discharge.--10 years (1910-16, 1947-51), 141 cfs.

Extremes. Maximum discharge during year, 1,080 cfs June 21 (gage height, 4.69 ft), from 

rating curve extended above 910 cfs; minimum daily, 14 cfs Feb. 1.

1910-17, 1947-51: Maximum discharge observed, 1,440 cfs June 25, 26, 1912 (gage 

height, 6.40 ft, site and datum then in use), from rating curve extended above 730 cfs; 

minimum not determined, occurred during period of no gage-height record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Transmountain diversion above station through Busk-Ivanhoe tunnel 

(see p. 340).

Revisions. W 1119: Drainage area.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

1.5 

1.7 

2.0

2.5 136

3.0 

-t.O 

4.4

275

730

930

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

38

40

35

33

31

28

*28

29

28

27

27

25

24

24

25

26

25

24

24

23

23

22

22

22

22

21

21

21

20

20

808

26.1

1,600

Nov.

21

21

19

23

21

25

24

24

21

21

22

23

23

23

*24

23

24

25

21

26

26

26

25

24

24

23

23

£3

23

23

699

23.3

1,390

Dec.

24

23

22

25 ~?5

23

24

24

24

24

24

23

21

22

*23

22

21

20

21

21

21

20

20

21

21

21

20

20

21

21

21

681

22.0

1,350

Jan.

21

20

20

21

21

21

20

18

19

21

21

20

20

19

20

20

19

19

19

18

17

19

19

19

18

17

18

19

18

17

17

595

19.2

1,180

Feb.

14T§"

17

19

21

2220"

18

18

18

18

19

18

*16

16

17

18

18

18

18

17

18

18

17

17

16

17

17

_

-

496

17.7

984

Mar.

18

17

TT

19

19

19

*20

20

21

22

23

20

21

19

19

19

19

19

19

19

19

19

19

19

20

20

20

18

18

19

18

598

19.3

1,190

Apr.

18

18

18

19

20

19

19

19

19

19

*17

18

20

23

27

30

40

43

49

56

68

71

79

95

78

87

82

109

132

104

1,416

47.2

2,810

May

78

67

63

81

118

158

175

198

*183

168

201

247

258

225

228

296

33 1

359

372

444

436

413

426

462

395

454

660

805

780

725

745

10,554

340

20,930

June

615

476

408

358" 338

431

503

550

*565

521

462

426

494

545

585

715

850

*875

865

905

930

860

780

730

760

780

750

725

695

630

19,107

637

37,900

July

605

570

575

570

526

472

480

454

395

354

314

310

296

*282

280

300

530

430

360

330

330

320

260

200

150

170

190

200

200

200

190

10,843

350

21,510

Calendar year 1950: Max 815 Mln 17 Mean 106 Ac-ft 76,660

Aug.

195

210

210

210

190

160

135

115

105

*98

93

84

78

74

67

62

61

58

57

79

86

79

68

69

72

60

55

54

56

69

61

3,070

99.0

6,090

Sept.

50

46

44

41

40

38

37

36

34

33

32

48

45

40

35

*35

33

32

35

32

41

40

38

35

32

30

28

3o

55

43

1,138

37.9

2,260

Water year 1950-51: Max 930 Mln 14 Mean 137 Ac-ft 99,190

Peak discharge (base. 760 cfs). May 28 (11 p.m.) 930 cfs (4.40 ft); June 21 (11:30 p.m.) 1,080 

cfs (4.69 ft).

* Discharge measurement made on this day.

Kote. Stage-discharge relation affected by Ice Nov. 12, 13, Mar. 7 to Apr. 17. No gage-height 

record Nov. 10, 11, Nov. 16 to Mar. 6 (stage-discharge relation affected by Ice during most of periods), July 15 to Aug. 9; discharge estimated'on basis of 2 discharge measurements, weather records, 

and records for stations on nearby streams.
ROARING PORK BASIN 73

Lime Creek at Troutville, Colo.

Location. Lat 39°25" , long. 106°38' , in sec. 22, T. 7 S., R. 83 W., on right bank a 

quarter of a mile downstream from Woods Lake and three-quarters of a mile west of 

Troutville.

Drainage area.--8.4 sq mi, approximately. 

Records available-.--June 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 9,390 ft (from topographic map). Prior

 tTo July 31, 1950, staff gage at site 20 ft upstream at same datum.

Extremes.--Maximum discharge during year, 147 cfs June 22 (gage height, 5.79 ft); minimum

 daily, -0.3 cfs Oct. 29-31.

1950-51: Maximum discharge, that of June 22, 1951; minimum daily, 0.3 cfs Oct. 29-31, 

1950.

Remarks. Records good above 5 cfs and fair below except those for periods of ice effect 

or no gage-height record, which are poor. Some natural regulation of flow by several 

small lakes above station. No diversion above station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-7)

3.4 0.2

5.5 .4

3.6 1.0

3.7 2.4

4.0 16

5.0 82

5.8 148

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.3

2.3

2.1

2.1

2.1

2.0

2.1

*2.7 274-

2.4

2.3

2.1

2.1

2.0

2.0

2.0

2.0

2.0

2.0

1.8

1.8

1.7

1.7

1.7

1.7

2.0

1.0

.4

.3

.3

.3

55.7

1.80

110

Nov.

~T5 0.4

1.3

1.4

1.6

1.6

1.6

1.6

1.4

1.4

1.4

1.4

1.4

1.6

2.0

*1.7

1.4

1.4

2.4

37T

1.8

1.8

1.7

1.6

1.4

1.4

1.4

1.4

1.4

1.4

-

45.3

1.51

90

Dec.

1.7

T7¥

1.2

1.4

1.4

1.1

T73

1.4

1.4

1.5

1.6

1.6

1.6

1.6

1.7

1.7

1.6

1.6

1.4

1.4

1.2

1.1

1.2

1.2

1.2

1.2

1.1

1.2

1.2

1.1

1.1

42.4

1.37

84

Jan.

1.1

34.1

1.1

60

Feb.

1.0

_

_

-

28.0

1.0

Mar.

1.0

17T

l.l

1.0

1.0

1.1

1.1 1.1

*1.0

1.0

1.1

1.2

1.3

1.1

1.4

1.3

 £77 3.4

2.4

2.4

2.4

2.3

2.1

2.0

1.8

1.7

1.6

1.8

2.0

2.5

2.3

51.3

1.65

56 | 102

Apr.

2.1

KT

2.3

2.5

2.8

2.6

2.6

2.6

2.6

2.6

2.2

2.3

2.7

2.7

2.7

3.0

4.0

5.2

5.2

6.1

8.0

8.0

8.0

10

9.6

9.0

9.0

9.8

11

TT

-

154.3

5.14

306

Hay

10

9.4

ao

9.6

10

12

13

*16

15

12

10

12

15

14

13

19

25

29

32

41

46

38

36

41

39

39

61

94

101 ~7T

65

957.0

30.9

1,900

June

57

36

32

23

M

20

24

33

38

45

45

*37

33

39

52

81

112

118

114

*113

113

128 ~B3

68

84

109

107

103

95

103

-

2,063

 :8.8

4,090

July

m

79

82

87

87

69

68

76

68

60

50

48

50

*46

44

46

89

67

56

49

49

49

41

33

18

23

26

27

30

29

28

1,665

53.7

3,300

Aug.

28

36

3T

34

31

27

22

19

17

15

13

12

10

9.6

9.1

*8.2

8.2

7.7

7.2

9.1

9.6

10

9.6

9.6

8.6

7.2

6.7

5.8 57B6.7

9.1

444.8

14.3

882

Sept.

11 ~9".6

7.7

6.3

5.1

4.8

4.4

. 4.1

3.8

3.4

3.1

3.8

3.4

3.1

3.1

*2.7

2.7

2.4

2.4

2.3

3.1

3.4

3.1

3.4

3.1

3.1

3.1

3.1

4.8

4.4

-

123.8

4.13

246

Calendar year 1950 : Max - Mln - Mean - Ac-ft

Water year 1950-51: Max 128 Min 0.3 Mean 15.5 Ac-ft 11,230

, Peak discharge (base, 100 efs). May 29 (5 a.m.) 114 cfs (5.47 ft),- June 22 (6 a.m.) 147 cfs 

(5.79 ft); June 26 (8 a.m.) 117 cfs (5.45 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 9, 10, Dec. 2-10, 21-29, 31, Jan. 1-10, Mar. 

10-12. No gage-height record Jan. 11 to Mar. 8 (stage-discharge relation affected by ice during 

most of period), Mar. 30 to May 7; discharge estimated on basis of weather records and records for 

nearby stations.
ROARING FORK BASIN

Lime Creek at Thomasville, Colo.

Location. Lat 39°21', long. 106°41', in sec. 18, T. 8 S., R. 83 W. , on right bank 150 ft

 upstream from mouth, half a mile southeast of Thomasville, and If miles downstream from 

Spring Creek.

Drainage area. 32 sq mi, approximately.

Records available. June 1950 to September 1951.

Sage. Water-stage recorder. Altitude of gage is 8,050 ft (from topographic map).

Extremes. Maximum discharge during year, 256 cfs May 29 (gage height, 5.25 ft); minimum

 daily, 7.6 cfs Feb. 1.

1950-51: Maximum and minimum discharges, those of 1951.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 which are fair. Small diversions above station.

Rating tables, water ye'ar 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Dec. 31

2.7 7.4

2.8 9

2.9 12

Jan. 1 to Sept. 30

2.7 8.3

2.8 9.7

3.0 15

3.2 25

3.7 

4.0 

5.0 

5.3

81

215

264

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

11

12

T?

11

11

11

10

*10

10

10

9.9

10

11

10

10

10

9.9

9.9

9.6

9.6

9.6

9.3

9.3

9.0

9.0

9.0

9.9

8.4-

8.0

OJ

8.0

305.4

9.85

606

Nov.

8.0

8.4

8.5

8.8

8.8

9.0

9.0

9.0

8.2

7.6

8.4

9.0

9.4

9.6

*9.B

9.0

9.2

9.6

9.6

9. a

9.2

9.4

9.4

9.4

9.0

9.0

8.8

8.6

8.6

8.6

-

268.7

8.96

533

Dec.

8.8

8.6

8.0 "STJ

 STZ

8.2

8.6

9.0

9.0

9.0

8.8

8.8

8.6

8.8

*9.0

9.0

8.4

8.4

8.7

8.7

8.4

8.2

bB.O

bB.2

8.5

8.5

8.8

8.8

8.8

8.8

8.8

268.8

8.67

533

Jan.

8.6

8.4

8.6

8.8.

8.8

8.6

8.2

8.0

S7£

9.0

9.0

9.0

8.6

*9.0

8.9

8.9

8.9

8.7

8.9

9.0

bB.4

8.9

9.0

8.9

8.9

9.0

8.7

8.7

bB.6

b8. 4

bB.2

270.0

8.71

536

Feb.

BTz- 7.6

8. 8

9.4

9.8

~5.e 10

9.0

9.0

9.0

9.2

9.6

10

*9.7

9.4

9.4

9.0

8.9

8.9

8.7

8.7

8.7

8.7

8.9

8.9

9.0

9.0

9.0

_

_

-

254.1

9.08

504

Mar.

b8. 8

S7S

9.4

bB.B

9.6

9.6

*9.4

9.3

9.3

9.4

9.6

9.4

10

10

10

10

10

9.8

9.2

9.8

9.8

9.8

9.6

9.6

10

10

11

IB

10

10

10

300.8

9.70

597

Apr.

10

10

1011

12

11

11

11

11

11

*11

9.7

"9T5 9.3

11

11

12

13

13

14

15

15

15

16

17

16

16

18

22 TO

-

393. y

13.1

781

May

17

15

14

TT

24

36

40

45

*45

39

41

47

50

46

45

60

84

96

113

130

113

113

115

126

122

122

163

218

226

T7Z

164

2,658

85.7

5,270

June

146

118

97

78

j>6

66

71

86

*94

104

106

*89

77

85

105

142

190

*200

196

192

214

220

TST

134

150

178

175

168

156

164

4,028

134

7,990

July

147

1ST

131

135

133

109

103

112

103

93

75

67

67

»64

61

69

126

91

71

65

64

64

56

50

39

354"?

44

47

47

45

2,486

80.2

4,930

Aug.

48

51

W

50

47

42

37

33

30

*29

26

24

22

21

20

20

18

18

18

20

21

20

20

20

20

18

17

16

17

18

19

830

26.8

1,650

Sept.

21

T5

17

16

15

14

15

14

13

13

12

12

11

11

11

*11

11

11

11

10

12

12

11

11

11

11

9.9

S7?

12

11

378.8

12.6

751

Calendar year 1950 : Max - Mln - Mean - Ac-ft -

Water lateryear 1950-51 J.HOU-OI : Max w226 £<:oMln wi7.6 f.bMean 34.1 04. j.Ac-ftr 24,680 £oou

Pealcdlscharge (base, 170 cfa). May 29 (8 a.m.) 256 cfs (5.25 ft); June 22 (7 a.m.) 239 cfs (5.15ft)

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Nov. 9 to Dec. 14, Dec. 28 to Jan. 13, Feb'. 1-13, Mar. 12 to 

Apr~ITO (stage-discharge relation affected by Ice during part of periods), May 13-21, Sept. 5-15; 

discharge estimated on baals of 1 discharge measurement, weather records, recorded range In stage, 

and records for nearby stations.
ROARING PORK BASIN 75

Crystal River near Redstone, Colo.

Location (revised). Lat 39°19' , long. 107°13 ! , in NW£ sec. 34, T. 8 S., R. 88 W., on left 

DanK cjuu rt rrom State Highway 133, 1 mile upstream from Thompson Creek, and 10 miles 

downstream from Redstone.

Drainage area. 225 sq mi.

Records available. May 1935 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,400 ft (from river-profile map). Prior 

 fo Oct. 21, 1946, at site 1 mile upstream.

Average discharge. 16 years, 370 cfs.

Extremes. Maximum discharge during year, 3,250 cfs June 21 (gage height, 7.70 ft), from 

rating curve extended above 2,500 cfs; minimum daily, 45 cfs Sept. 28.

1935-51: Maximum discharge, 4,400 cfs June 21, 1938 (gage height, about 8.5 ft, 

from floodmark, present site and datum) , from rating curve extended above 2,500 cfs; 

minimum observed, 32 cfs Jan. 19, 1943 (discharge measurement).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Diversions above station for irrigation of about 115 acres above 

station and about 2,040 acres below station.

Rating table, water year 1950-51, except period of loe effect 

(gage height. In feet, and discharge, In cubic feet per second 

(Shifting-control method used July 6-20)

4.2 

4.4 

4.6

65

100

5.0 200

5.5 430

6.0 820

6.5 1,350

7.0 2,040

7.5 2,880

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4

S

6

7

8

9

10

11

13

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

82

82 

75

74

70

*72

70

68

67

65

64

64

60

60

64

60

60

59

58

56

56

54

53

7?

96 95-

95

93

93

91

2,208

71.2

4,380

Nov.

91

93

91

89

89

87

87

86

8420

80

80

79

84

84

80

84

84

107 ~53"

96

93

*87

84

82

82

80

80

80

80

-

2,566

85.5

5,090

Dec.

82

79

74 

89

50

70

64

75

86

84

86

87

86

*86

86

86

82

77

87

84

79

74

67

70

75

77

74

72

82

77

79

2,460

79.4

4,880

Jan.

77

72

80 

77

79

78

64

60

64

74

74

74

71

72

*b77

b75

68

67

65

60

68

70

67

65

64

65

65

70

74

67

64

2,167

69.9

4,300

Feb.

52 5T

64 

74

80

82

75

70

67

67

70

75

*70

59

60

65

67

68

68

66

65

69

69

68

67

65

66

60

-

-

-

1,882

67.2

3,730

Mar.

62

64

61 

59 B5

65

65

68

70

*74

72

64

68

67

68

74

68

64

62

67

67

70

67

67

74

84

86

S?

74

77

74

2,149

69.3

4,260

Apr.

74

7¥

82 

93

102

96

91

91

89

*87

79

80

79

93

113

136

153

158

160

173

194

191

200

239

218

243

221

235

284

255

4,383

146

8,690

May

228

194

170 

T3T

228

325

400

465

424

437

549

594

594

486

*418

500

674

775

847

892

970

970

950

940

1,000

1,280

1,700

2,040

1,660

1,560

1,590

24,251

782

48,100

June

1,470

1,080

829 

658

654

757

1,020

*1,230

1,270

1,400

1,250

1,030

1,140

1,250

1,360

*1,800

2,270

2,560

2,520

2,590

2,680

2,570

2,190

2,100

2,160

2,250

2,210

2,100

1,920

1,840

50,138

1,671

99,450

July

1,710

1,500

1,800 

1,660

1,590

1,340

1,460

1,460

1,230

1,080

940

960

883

811

766

*784

739

722

739

714

865

535

444

437

430

424

451

451

430

360

4TT6~

28,121

907

55,780

Aug.

400

394

437 325-

350

316

280

255

*228

218

218

210

191

163

156

146

144

134

134

165

144

136

118

118

124

102

96

1T50

113

267

221

6,403

207

12,700

Sept.

165

OT

136

124

113

107

102

96

84

86

79

82

79

74

67

62

*60

58

56

53

65

65

56

52

49

48

46

45

S?

74

2,413

80.4

4,790

Calendar year 1950 : Max 2,570 Mln 43 Mean 335 Ao-ft 242,600

Water year 1950-51 : Max 2,680 Mln 45 Mean 354 Ac-ft 256,200

Peak discharge (base, 2,000 cfs). Hay 27 (12 p.m.) 2,300 cfs (7.17 ft); June 21 (12 p.m.) 3,250 

OfS (7.7O ft}.

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 6-9, Jan. 6-14, Jan. 30 to Feb. 9, Feb. 15 to Mar. 4, Mar. 9 

(stage-discharge relation affected by loe during part of periods); discharge estimated on basis of 

weather records and records for stations on nearby streams.
76 ROARING FORK BASIN

Thompson Creek near Carbondale, Colo.

Location. Lat 39°20', long. 107°13', in sec. 28, T. 8 S., R. 88 W., on right bank 1 mile 

upstream from mouth and 5 miles south of Carbondale.

Drainage area.--76 sq mi, approximately.

Records available.--October 1950 to September 1951.

Gage. Water-stage recorder.

Extremes.--Maximum discharge during year, 318 cfs May 28 (gage height, 3.23 ft); minimum 

daily, 3.0 cfs Sept. 26, 27.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Small diversions for irrigation of hay meadows above station.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Jan. 13-28, Feb. 4 to Mar. 5,

Mar. 10-17, Mar. 2O to Apr. 2)

1.3 1.9

1.4 3.5

1.5 5.5

1.7 

2.0 

2.2

12

45

2.5 102

3.0 232

3.5 445

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

5.6 477"

4.9

5.1

5.0

4.6

4.6

4.0

3.8

4.1

*3.9

3.9

3.9

3.9

4.5

4.5

4.1

3.9

3.7

575" 3.5

3.5

3.5

3.9

3.9

3.9

3.7

3.9

3.7

3.7

128.4

4.14

255

Nov.

3.9

4.1

4.5

3.9

4.7

4.7

4.5

4.5

3.9

5.5

3.8

4.5

5.6

6.4

5.8

5.0

5.8

6.8

8.0

7.6

8.4

8.2

*7.9

7.6

8.5

7.9

7.0

7.6

7.6

8.2

-

180.4

6.01

558

Dec.

7.6

6.7

6.7

b7 .6

b6. 6

6.1

be. 4

be. 8

bS.O

b775

be. 6

b7.4

b7.2

*6.7

5.5

5.1

6.4

7.9

7.6

7.0

b6.7

b6.6

b6.6

be .7

b6. 8

be. 7

6.4

b6. 5

b7 .2

b7.3

b7.2

211.4

6.82

419

Jan.

b7 .O

775

6.7

6.4

6.1

5.5

5.5

5.3

5.3

5.3

5.5

5.1

5.1

5.1

 5.1

5.1

5.1

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.9

b4.8

b4.7

b4.5

163.9

5.29

325

Feb.

b4.5 b4~8"

b5.0

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.5

6.1

*B75

4.9

5.8

5.8

5.5

5.3

5.3

5.1

5.1

5.1

5.3

5.1

5.3

5.3

5.5

5.1

_

_

-

146.4

5.23

29O

Mar.

5.1

5.1

5.1

4.9

5.1

4.8

478

5.8

8.2

*9.2

7.6

8.5

7.9

7.0

7.3

8.2

7 .6

b7.0

b7 .0

7.6

7.3

8.5

7.9

8.5

9.6

10

15

8.8

8.2

8.2

7.6

228.4

7.37

455

Apr.

7.6

8.2

8.8

10

11

10

9.2

11

8.5

*8.5

7 .9

7.9

7.3 9TB~

12

15

16

20

21

23

26

26

27

37

52

53

30

33

48

43

-

567.5

18.9

1,130

May

33

28

IB- 25

55

66

98

151

112

116

156

156

128

107

 112

156

168

171

184

184

175

181

179

181

189

208

235

252

258 239"

239

4,468

144

8,860

June

226

T7T

148

119

102

102

109

*1O9

100

98

93

78

82

89

87

*100

124

136

155

158

184

135

100

80

66

57

50

44

41

21

-

3,156

105

6,260

July

33

29

26

23

22

20

18

17

16

16

15

14

13

12

11

*11

12

11

9.9

9.9

57

2T

14

12

9.9

9.6

14

16

11

7.9

6.1

497.5

16.0

986

Aug.

6.7

6.7

15

11

15

11

11

10

9.9

8.8

9.9

*7 .O

5.8

5.5

5.1

4.9

4.9

4.9

4.9

12

12

8.8

7.0

6.4

7.5

6.1

5.5

5.1

5.8

18

8.2

257.8

8.32

511

Sept.

6.1

5.1

4.7

4.3

4.1

5.?

3.7

3.7

3.E

3.3

3.5

3.5

3.7

3.E

5.5

5.E

5.5

*5.5

5.5

5.5

4.3

4.5

3.S

3.3

5.2

5.0

37C

3.2

S.S

BTT

-

120.0

4.0C

256

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 195O-51: Max 258 Mln 5.0 Mean 27.7 Ac-ft 20,080

Peak discharge (base, 2OO cfs). --May 19 (8 p.m.) 232 cfs (3.OO ft); May 28 (12 p.m.) 318 cfs (3.23

ft;; June 20 (2 a.m.) 239 cfs (3.02 ft); July 21 (6:30 p.m.) 285 cfs (3.15 ft).

Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 1-11, Nov. 9-22, Mar. 6-9 (stage-discharge relation affected by 

ice during part of periods); discharge estimated on basis of weather records, recorded range in 

stage, and records for nearby stations.
ROARING PORK BASIN

Cattle Creek near Carbondale, Colo.

Location. Lat 39°28', long. 107°03', in sec. 12, T. 7 S., R. 87 W., on left bank just

 downstream from Taylor Creek, half a mile upstream from Missouri Heights Reservoir diversion, and 10 miles northeast of Carbondale.

Drainage area. 34 sq mi, approximately.

Records available. October 1950 to September 1951.

Gage. Water-stage recorder.

Extremes.--Maximum discharge during year, 148 cfs May 27 (gage height, 3.48 ft); minimum

 daily, 2.8 cfs Feb. 1.

Remarks.--Records fair except those for periods of ice effect or no gage-height record,

 wnicn are poor. Small diversions for irrigation of hay meadows above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used May 8-29)

1.9 2.3

2.1 4.8

2.2 8.0

2.4 

3.0 

4.0 190

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.1

4.4

4.2

4.5

47S

4.3

4.2

4.1

4.1

4.1

4.0

*4.0

4.0

4.0

4.0

4.C

4.C

4.0

4.0

4.0

4.0

4.2

3.9

3T9

4.0

4.0

4.0

4.0

4.0

4.0

4.0

126.5

4.08

251

Nov.

4.0

4.2

4.0

4.2

4.2

4.2

4.2

4.0

3.5 3-75-

3.8

4.1

4.2

4.0

3.9

4.0

4.1

4.1

4.1

4.1

4.3

*T70

3.6

b3.8

b4.1

b4.1

b4.1

b4.1

b4.0

b3.9

-

120.5

4.02

239

Dec.

3.6

b3.6

b3.8

b3.8

b3.6

b3>6

b3.8

b3.9

378

b3.7

3.6

3.5

3.5

*3.5

3.6

3.6

b3.6

b3.6

3.4

3.4

b3.3

b3.2

bST?

3.3

3.4

3.4

3.4

3.5

3.6

3.6

3.5

109.9

3.55

218

Jan.

3.4

3.4

3.6

3.5

3.4

b3.4

b3.2

b3.2

b3.4

b3.5

b3.6

b3.6

*b3.6

b3.5

3.8

3.6

3.3

3.3

3.3

3.4

3.4

3.4

3.4

3.4

3.3

b3.3

3.1

3.1

3.4

b3.2

b3_.0

105.0

3.39

208

Feb.

b2.8

b37T

b3.3

b3.5

b3.5

b3.5

b3.4

3.4

3.3

3.3

3.4

3.1

b3.1

b3.4

b3.4

b3.4

3.4

3.3

3.1

3.5

3.8

y^

3.5

3.5

3.4

3.3

3.4

3.4

_

_

-

94.1

3.36

187

Mar.

3.3 BTB"

3.5

3.8 378"

3.4

3.4

3.5

3.7

3.5

3.5

3.3

3.7

3.7

3.7

3.7

3.5

3.3

3.3

3.5

3.7

3.5

3.3

3.3

3.5

3.7

3.7

3.5

3.3

3.5

3.3

108.9

3.51

216

Apr.

3.5

377

3.9

4.2

4.2

4.0

4.0

4.2

4.0

4.0

4.0

3.9

3.8

4.0

5.0

6.5

8.0

11

13

16

*22

20

24

24

21

22

20

23

28 SB"

-

343.9

11.5

682

May

23

21

2T

24

29

38

44

50

48

47

53

63

62

57

*54

59

64

67

81

91

86

88

97

99

100

102

126

136

T22

103

98

2,153

69.5

4,270

June

8668-

57

47

40

37

38

*40

39

37

35

33

*32

3?

33

35

39

45

47

56

64

61

53

46

44

42

40

38

36

35

-

1,335

44.5

2,650

July

32

375

26

22

21

18

16

14

12

12

10

10

12

11

10

*10

10

9.0

8.0

8.0

9.5

9.0

7.4

7.0

6.7

6.7

6.7

7.0

5.8

S75

5.8

378.4

12.2

751

Aug.

5.8

6.4

7.7

eTS

6.4

6.1

6.1

5.8

5.4

5.1

5.1

*4.8

4.8

4.8

4.7

4.7

4.7

4.7

4.7

6.4

6.1

5.1

4.8

5.1

4.5

4.5

4.4

4.5

4.7

5.4

4.5

164.0

5.29

325

Sept.

4.0

4.0

3.9

3.8

3.9

3.8

3.8

3.6

3.5

3.6

3.6

3.8

3.8

3.8

3.8

3.6

3.6

3.6

*3.6

3.5

3.8

3.6

3.6

3.5

3.5

3.4

T7I

3.6

4.4 3"78"

-

111.2

3.71

221

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 136 Mln 2.8 Mean 14.1 Ac-ft 10,220

Peak discharge (base, 100 umj. my <-1 

* Discharge measurement made on this day. 

v, <!<-.,.. J4«-^ relation affected by Ice

.~May 27 (12 p.m.) 148 cfs (3.48 ft).

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Oct. 1-11, Nov. 9-21, Feb. 20 to Apr. 20 (stage-dlschar 

affected by Ice during part of periods); discharge estimated on basis of weather recor 

range In stage, and records for nearby stations.

relation 

, recorded
78 ROARING FORK BASIN

Roaring Pork at Glenwood Springs, Colo.

Location. La t 39°33', long. 107°20', in sec. 9, T. 6 S., R. 89 W. , on left bank at 

uienwood Springs, 1,500 ft upstream from mouth.

Drainage area. 1,460 sq mi, approximately.

Records available . October 1905 to September 1909, September 1910 to September 1931, and 

octooer laai) to September 1951 in reports of Geological Survey. April 1906 to September 1909 and September 1910 to October 1951 in reports of State engineer.

Gage.--Water-stage recorder. Datura of gage is 5,720.73 ft above mean sea level, adjustment

 of 1912. Prior to Nov. 20, 1915, chain gage on highway bridge 900 ft downstream at

different datum. Nov. 20, 1915, to Oct. 22, 1917, staff gage at present site and datun.

Average discharge. 45 years (1905-9, 1910-51), 1,451 cfs.

Extremes. Maximum discharge during year, 8,290 cfs June 22 (gage height, 6.08 ft); minim-am 

daily, 255 cfs Feb. 1.

1905-9, 1910-51: Maximum discharge, 17,600 cfs June 14, 1918 (gage height, 8.45 

ft), June 14, 1921 (gage height, 8.7 ft); maximum gage height, that of June 14,'1921, 

from high-water marks; minimum discharge, 145 cfs Jan. 21, 1935 (gage height, 0.65 

ft); minimum daily, 179 cfs Jan. 21, 1935.

Remarks.--Records excellent except those for periods of ice effect, which are good. Di-

 versions above station for irrigation. Transmountain diversion through Twin Lakes and 

Busk-Ivanhoe tunnels to Arkansas River basin (see p. 340).

Revisions (water years). W 918: 1908.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

0.7 

1.0 

1.5 

2.0

240

360

660

1,130

3.0 

4.0 

5.0 

6.0

2,270

3,760

5,800

8,100

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

572 

611 "SIT

597

578

*560

566

554

548

530

500

494

488

482

482

494

494

482

470

476

470

464 

446

434

T5?

476

476

476

470 

470

470

15,693

506

31,130

Nov.

488 

494

506

494

506

494

500

494

488

428

446

500

518

512

518

464

512

512

542

542

524

*554 

515

488

476

482

464

464

458 

458

-

14,844

495

29,440

Dec.

482 

464

395

494 T70"

360

452

494

494

452

458

470

464

452

458

458

*422

400

440

446

400

380 

375

385

400

385

385

360

4TE 

405

410

13,326

430

26,430

Jan.

400 

380

375

400

405

380

320

302

b350~

b400

b385

b385

b365

b365

b410

*b395

b385

390

395

365

335

405 

385

375

365

350

370

380

395 

340

340

11,592

374

22,990

Feb.

255 

b25o"

b340

b390

b410

350" 440

360

350

355

365

390

*375

315

310

335

355

360

360

355

330

365 

360

365

360

335

365

360

-

-

9,920

354

19,680

Mar.

325 STB"

355

330

375

380

380

390

405

*434

428

375

400

390

395

410

385

360

350

395

375

400

375

370

335

416

434

422

375 

400

395

11,994

387

23,790

Apr.

390 

355" 385

428

476

464

440

440

428

440

385

*400

385

428

488

542

597

692

692

732

821

850 

850

1,010

930

960

900

930

1,130 

1,110

-

19,118

637

37,920

May

980 

870

794 530"

950

1,270

1,490

1,710

1,660

1,530

1,650

1,810

1,950

1,710

1,460

*1,630

1,950

2,200

2,270

2,750

2,820

2,700 

2,690

2,840

2,730

3,000

3,980

5,140

5,360 

4,580

4,760

72,064

2,325

142,900

June

4,360 

3,470

2,840

2,470

2,280

2,420

2,740

3,230

3,350

3,540

»3,320

2,890

3,070

3,420

3,710

*4,560

5,960

6,750

*6,530

7,330

7,330

7,450 

6,350

5,730

5,690

6,060

5,820

5,690

5,250 

4,920

-

138,550

4,618

274,800

July

4,780 

4,200

4,700

4,760

4,400

3,620

3,780

3,720

3,370

3,040

2,700

2,700

*2,560

2,420

2,330

2,320

2,390

2,340

2,290

2,290

2,530

2,340 

2,100

2,080

1,870

1,730

1,830

1,890

1,830 

1,670

1,620

86,200

2,781

171,000

Aug.

1,680 

1,630

2,210

1,950

1,810

1,620

1,460

*1,330

1,200

1,080

1,010

930

880

785

732

660

632

625

~3S8 604

776

740 

749

700

758

716

676

660

668 

1,080

990

32,009

1,033

63,490

Sept.

85C 

76T

684

625

578

554

536

518

506

488

470

524

518

494

458

452

434

*416

395

380

385

390 

390

395

385

380

350" 375

446 

500

-

14,673

489

29,100

Calendar year 1950 : Max 6,120 Mln 300 Mean 1,085 Ac-ft 785,200

Water year 1950-51 : Max 7,450 Mln 255 Mean 1,205 Ao-ft 872,700

Peak discharge (base, 6,500 efs).--June 22 (6 a.m.) 8,290 cfs (6.08 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
PARACHUTE RIVER BASIN 79

Parachute Creek near Grand Valley, Colo.

Location.--Lat 39°34'30", long. 108°06'35", in NE£ sec. 36, T. 5 S., R. 96 W., on right 

DanK lOO ft downstream from bridge, 0.1 mile downstream from confluence of West Pork 

and East Pork, and 9 miles north of Grand Valley.

Drainage area.--144 sq mi.

Records available.--October 1948 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 5,780 ft (from topographic map).

Extremes. Maximum discharge during year, 1'47 cfs July 21 (gage height, 3.24 ft); maximum 

gage neight, 3.30 ft Feb. 2 (ice jam); minimum daily discharge, 0.9 cfs Sept. 27, 28.

1948-51: Maximum discharge, 318 cfs May 4, 1949 (gage height, 3 62 ft); no flow 

Dec. 2, 1948 (field observation).

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Diversions for irrigation of about 75 acres above station. One diversion from East Pork bypasses station for irrigation of about 100 acres below station.

Rating table, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Aug. 4 to Sept. 30)

1.9

2.0 

2.2 

2.4

0.3 

1.0 

3.6 

8.0

2.5

2.6

2.8

12

19

42

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

5.9

5.9

5.7

*5.7

5.7

5.9

6.2

^77 5.7

5.7

5.5

5.5

5.5

5.3

5.3

5.3

5.3

5.5

5.5

5.3

5.3

5.3

5.1

5.3

5.3

4.9

4.4

4.2

TT?

*4.4

4.9

165.4

5.34

328

Nov.

5.1

5.3

T7S

5.1

4.9

5.1

4.6

4.9

3.6

2.9

3.2

3.3

3.3

3.6

3.6

3.6

3.8

4.0

4.4

4.0

4.4

3.8

3.8

4.0

3.8

4.0

4.0

3.8

3.8

4.0

122.3

4.08

243

Dec.

4.0

3.3

3.2 *T75

3.5

3.3

3.5

3.3

3.6

3.6

.6

.0

.0

.2

.4

.2

.2

.2

.4

.4

.0

.8

.6

.8

.8

3.6

3.6

3.4

3.5

3.5

3.3

116.4

3.75

231

Jan.

3.0 *?73-

2.5

2.5

2.5

2.3

2.1

2.0

272

2.4

2.4

2.3

2.3

2.3

2.5

2.6

2.6

*2.6

2.6

2.5

2.4

2.5

2.5

2.5

2.6

2.6

2.6

2.6

2.8

2.5

2.2

76.3

2.46

151

Feb.

1.8

271

a2.4

a2.4

a2.5

*2.5

2.5

2.5

2.6

2.5

2.6

2.8

2.5

2.3

2.3

2.5

2.6

2.6

2.6

2.6

3.2

3.3

3.6

3.6

3.5

3.8

4.2

TT?

_

_-

-

78.6

2.81

156

Mar.

4.4

57T

4.9

4.9

4.4

*5.3

5.5

6.2

6.8

6.2

5.1

5.3

6.8

7.1

7.5

7.1

6.2

6.2

6.2

7.3

9.6

11

10

12

17

22

T5

16

14

15

13

277.1

8.94

550

Apr.

13

13

16

17

*18

13

12

13

13

12

9.6

11

10

12

13

11

10

16

18

15

11

9.2 12~

16

12

11

11

22

27

rs

-

419.8

14.0

833

May

22

20

18

21

25

27

*24

27

25

24

25

30

5C

26

25

24

29

25

25

24

23

*26

22

23

21

20

18

16

16

14

il

708

22.8

1,400

June

13

16

15

14

*16

17

TS

16

16

16

15

13

11

9.6

8.0

7.8 e-TS

9.2

9.2

9.6

10

10

8.4

8.8

8.4

10

9.6

9.2

8.8

9.6

-

349.0

11.6

692

July

8.8

8.8

*8.8

8.8

8.0

7.8

7.8

8.0

7.8

7.8

7.5

7.5

6.8

6.8

7.3

7.8

8.4

8.0

7.8

7.8

12 -J.5

*6.4

5.5

5.7

6.2

5.7

3.8

4.0

3.6

375

222.1

7.16

441

Aug.

3.5

3.2

3.8

4.2

3.5

3.3

*3.6

3.5

3.8

3.8

3.5

3.5

3.6

4.0

4.2

4.0

3.5

3.0

3.0

4.2

4.8

4.8

4.4

5.1 275

2.6

2.6

2.8

2.9

3.0

2.2

110.4

3.56

219

Sept.

2.6

3.0

275

2.9

3.0

2.9

*2.8

2.6

2.6

2.6

2.6

2.5

2.5

2.5

2.5

2.3

2.5

2.3

2.2

2.2

2.2

2.2

2.2

2.1

2.1

1.8

.9

75

1.0

1.2

-

68.6

2.29

136

Calendar year 1950: Max 140 Mln 2.9 Mean 19.6 Ao-ft 14,180

Water year 1950-51: Max 30 Mln 0.9 Mean 7.44 Ac-ft 5,380

Peak discharge (baae, 150 efs). No peak above base.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

Note. Stage-discharge relation affected by Ice Nov. 10, Dec. 6, Dec. 28 to Jan. 24, Jan. 29 to 

FetrTT, Feb. 14-16, Feb. 20, Mar. 1.
PARACHUTE CREEK BASIN 

Parachute Creek at Grand Valley, Colo.

Location. Lat 39°27'10", long. 108°03'30", in NW£ sec. 12, T. VS., R. 96 W. , on right 

Dank at west edge of Grand Valley, half a mile upstream from bridge on U. S. Highways 

6

, .

Dank at west edge of Grand Valley, 

6 and 24, and 1-jj miles upstream from mcuth.

Drainage area. 200 sq ml.

Records available .--April 1921 to September 1927, October 1948 to September 1951.

Gage. --Water-stage recorder. Altitude of gage is 5,100 ft (from topographic map). April 

T921 to September 1927, staff gage abcut 50 ft upstream at different datum.

Average discharge. 9 years, 31.6 cfs.

Extremes. Maximum discharge during year, 600 cfs Aug. 3 (gage height, 4.32 ft, from flocdmarKs ) , on basis of slope-area determination of peak flow; minimum daily, 0.1 cfs Aug. 

14-19, 25-28, Sept. 16-27.

1921-27, 1948-51: Maximum discharge observed, 790 cfs May 9, 1922 (gage height, 3.0 

ft, site and datum then in use); no flow for short periods in 1926, 1927, and 1949.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Diversions for Irrigation of about 1,400 acres above station and about 

400 acres along Colorado River.

Revisions. W 1149: Drainage area.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.1

1.2

1.3

1.4

1.5

1.6 

1.8 

2.0

5.2

9.0

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

11

7.9

*6.7

7.9

6.7

6.0

10

7.5

4.6

1.9

1.9

3.0

4.1

4.4

4.1

4.6

6.3

6.0

4.9

3.8

3.5

3.0

3.5

3.5

1.4

272

4.1

4.9

*6.0

6.0

161.4

5.21

320

Nov.

5.6

775

8.2

8.6

16

17

18

18

16

b!4

16

16

16

17

16

]6

16

16

18

16

16

16

16

16

15

16

16

15

15

16

-

448.9

15.0

890

Dec.

16

TS

14

 15

15

12

13

13

13

14

14

14

14

14

15

15

14

14

14

14

14

14

14

14

14

14

14

13

14

14

14

435

14.0

863

Jan.

13 »To

12

12

12

11

b9.5

b8.5

9.5

11

11

10

10

10

10

10

10 *11

11

blO

b9.5

10

10

10

10

11

11

11

*b!2

blO

b8.5

324.5

10.5

644

Feb.

b7.0

b8.5

9.5

9.0

9.0

*8.6

9.5

9.5

10

11

10

14

12

10

10

10

11

12

12

12

12

12

12

12

12

12

14

14

_

-

304.6

10.9

604

Mar.

12

14

14

13

15

*16

16

15

17

17

16

14

15

15

15

16

15

15

15

16

17

22

18

18

22

27

3222"

20

23

21

543

17.5

1,080

Apr.

22

22

28

33

*32

31

25

27

25

29

22

25

24

20

19

15

10

13

22

14

14

9.5

8.2

14

7.9

3.2

1.3

.6

1.8

3.8

-

522.3

17.4

1,040

May

3.0

3.0

2.7

1.9

1.1

1.3

*1.0

2.2

3.0

2.7

1.6

2.2

4.6

3.2

4.4

5.2

12

7.9

8.2

7.9

6.7

*13

10

5.2

6.0

5.2

3.8

2.4

1.6

.7

.7

134.4

4.34

267

June

0.7

.7

.8

.7

*.7

.7

.7

.8

.8

.8

1.1

1.4

1.6

1.6

.7

.4

.4

.4

.5

1.8

2.2

1.8

1.9

1.8

1.9

2.7

3.2

3.0

1.8

1.4

-

39.0

1.30

77

July

1.1

.5

*.6

1.1

1.6

.6

.3

.3

.4

.3

.4

.2

72

.2

.3

.3

.4

.2

.3

4.6

12

16

*6.7

3.0

1.9

.5

.2

2.2

.7

.7

.7

58.5

1.89

116

Aug.

0.4

.6

*a6.0

a8.0

a6.0

a5. 5

*a7.0

6.3

5.2

4.6

3.8

1.3

.4

*.l

a.l

a.l

a.l

a.l

a.l

1.0

3.0

6.3

2.4

a. 6

a.l

a.l

a .1

a.l

6.0

~5.6 14

95.0

3.06

188

Sept.

a3.0

a5.0

a5.0

a5.0

a5.0

a4.9

*4.9

4.9

4.1

3.2

3.0

2.7

2.7

2.4

.6

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

1.4

.7

-

59.9

2.00

119

Calendar year 1950: Max 130 Mln 0.2 Mean 20.4 Ac-ft 14,740

Water year 1950-51: Max 33 Mln 0.1 Mean 8.57 Ac-ft 6,210

Peak discharge (base, 200 cfs). --Aug. 3 (6 p.m.) 600 cfs (4.32 ft). ** Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather rec 

and.records for nearby stations.

b Stage discharge relation affected by ice.

rds,
COLORADO RIVER MAIN STEM 

Colorado River near Cameo, Colo.

81

Location. Lat 39°13', long. 108°15', in sec. 6, T. 10 S., R. 97 W., on left bank 100 ft 

west "of U. S. Highways 6 and 24, 3 miles upstream from Grand Valley project diversion 

dam, 3.4 miles upstream from Plateau Creek, and 6.7 miles northeast of Cameo.

Drainage_area. 8,060 sq mi, approximately.

Records available.--October 1933 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,770 ft (by barometer).

Average discharge. 18 years, 4,083 cfs.

Extremes.--Maximum discharge during year, 22,800 cfs June 22 (gage height, 9.35 ft); 

minimum daily, 1,100 cfs Jan. 8.

1933-51: Maximum discharge, 36,000 cfs June 16, 1935 {gage height, 10.91 ft); minimum daily, 700 cfs Dec. 29, 1939.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow affected by transmountain diversions, storage reservoirs, power 

developments, and diversions for irrigation. Records of chemical analyses and water 

temperatures for the water year 1951 are given in Water-supply Paper 1200.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 28 May 29 to Sept. 30

4.0 

5.0

1,230

1,780

5,100

7,240

17,200

1.9 

3.0 

5.0 

7.0 

9.3

1,610

3,200

7,100

13,100

22,600

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

1,640

1,700

1,920

*1',?90 

1,830

1,830

1,780

1,700

1,680

1,530

1,450

1,780

1,680

1,540

1,430

1,410

1,430 

1,420

1,520

1,430

1,390

1,400

1,430

1,450

1,400

1,300

1,360

1,650

1,640

*1,710

1,410

48,630

1,569

96,460

Nov.

1,410

1,450

1,520

1,440 

1,660

1,730

1,500

1,500

1,600

1,800

1,800

1,700

1,800

1,550

1,600

1,700

1,600 

1,500

1,700

1,900

1,600

1,700

2,100

2,200

1,800

1,550

1,600

1,450

1,400

1,600

-

49,460

1,649

98,100

Dec.

1,700

1,650

1,550

*1,400 

1,450

1,410

1,360

1,480

1,730

1,660

1,680

1,730

1,500

bl,450

bl,800

bl,800

1,880 

1,560

1,540

1,730

1,780

1,660

1,650

1,550

1,570

1,400

1,410

1,370

1,560

1,620

bl,650

49,380

1,593

97,940

Jan.

bl,650

*bl,500

1,450

1,470 

1,710

bl,700

bl,400

bl,100

bl,200

1,350

1,500

1,600

1,550

1,550

1,450

1,400

1,400 

1,700

1,800

1,750

1,700

1,600

1,400

1,500

1,650

1,800

1,850

1,800

1,850

1,800

1,400

48,580

1,567

96,360

Feb.

1,600

1,600

1,400

1,400 

1,650

1,500

1,600

1,750

1,900

1,800

1,600

1,600

1,500

1,500

1,650

1,500

1,600 

1,600

1,700

1,500

1,450

1,700

1,800

1,600

1,700

1,600

1,300

1,400

_

-

-

44,500

1,589

88,260

Mar.

1,600

1,500

1,700

1,900 

1,600

*1,330

1,660

1,610

1,770

1,700

1,760

1,610

1,560

1,560

1,830

1,700

1,550 

1,580

1,390

1,450

1,550

1,780

1,660

1,560

1,540

1,590

1,500

1,480

1,670

1,530

1,620

49,840

1,608

98,860

Apr.

1,580

1,550

1,520

1,660 

*1,760

1,990

1,980

2,100

1,710

1,710

1,760

1,730

1,810

1,710

1,760

1,830

2,080 

2,380

2,710

2,940

3,000

3,350

3,100

2,910

3,500

4,180

4,420

4,270

4,400

4,760

-

76,160

2,539

151,100

May

4,720

4,430

4,000

3,730 

3', 800

4,270

*5,100

5,780

6,430

6,580

6,360

6,470

6,500

6,580

6,300

6,080

6,430 

7,340

8,040

9,530

10,800

11,300

11,400

11,900

12,200

12,200

13,500

16,000

*18,000

17,700

17,000

270,470

8,725

536,500

June

16,900

15,600

13,700

12,000 

10,700

9,860

9,990

10,600

11,200

11,300

11,400

10,600

10,200

10,500

11,100

12 , 500

15 , 000 

17,100

18,300

19,200

21,000

22,300

2o,500

17,500

16,300

16,400

*16,100

15,700

14,800

13,900

-

432,250

14,410

857,400

July

13,200

12,000

11,600

11,800 

11,100

10,100

9,740

9,300

8,830

8,100

7,480

6,990

6,920

6,660

6,420

6,200

6,400 

7,100

7,120

6,880

6,420

6,950

6,730

6,440

5,880

5,280

5,040

5,440

5,260

5,240

4,980

237,600

7,665

471,300

Aug.

4,980

4,890

5,080

5,840 

5,440

5,060

4,750

*4,440

4,230

4,050

3,870

3,520

2,870

2,690

2,690

2,580

2,500 

2,360

2,180

2,260

2,220

2,540

2,810

2,660

2,570

2,550

2,280

2,220

2,460

2,920

3,060

104,570

3,373

207,400

Sept.

2,890

2,680

2,320

2,170 

1,970

1,900

*1,850

1,790

1,760

1,700

1,710

1,710

1,630

1,770

1,790

1,720

1,740 

1,800

1,890

1,840

1,770

1,760

1,790

1,780

1,700

1,640

1,630

1,620

1,690

1,770

-

55,980

1,866

111,000

Calendar year 1950 : Max 16,700 Min 1,230 Mean 3,475 Ao-ft 2,516,000

Water year 1950-51 : Max 22,300 Min 1,100 Mean 4,020 Ao-ft 2,911,000

Peak discharge (base, 19,000 efs).--June 22 (7:30 p.m.) 22,800 cfs (9.35 ft).

* Discharge measurement madeon this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 9 to Dec. 4, Jan. 10 to Mar. 5 (stage-discharge relation affected 

by ice during part of period); discharge estimated on basis of 1 discharge measurement, recorded range 

in stage, and records for Colorado River and Roaring Fork at Glenwood Springs.
°<= PLATEAU CREEK BASIN

Plateau Creek at upper station, near Collbran, Colo.

Location. Lat 39°13', long. 107°49', in sec. 6, T. 10 S., R. 93 W., on right bank threequarters of a mile upstream from Park Creek and 8 miles southeast of Collbran.

Drainage area.--24 sq mi, approximately.

Records available.--August 1941 to September 1943 (no winter records). May to September 

1951.

Gage.. --Water-stage recorder.

Extremes. --Maximum daily discharge during period M=>y to September, 125 cfs May 28; minimum 

daily, 0.2 cfs Sept. 7.

1941-43, 1951: Maximum discharge, 450 cfs May 27, 1942 (gage height, 3.90 ft), from 

rating curve extended above 175 cfs; minimum daily, 0.2 cfs Sept. 3-5, 1941, Sept. 7, 

1951.

Remarks.--Records poor. One small reservoir (capacity, 200 acre-ft) and diversions for 

irrigation of about 730 acres above station. Erie Canal diverts water above station 

to Buzzard Creek drainage for irrigation of about 140 acres.

Cooperation.--Gage-height record and 13 discharge measurements furnished by Bureau of 

Keclamation.

Discharge, in cubic feet per second, May to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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. Mar. Apr.

(*)

May

16

12

10 *rr

13

19

*24

31

28

*26

30

36

34

*24

20

21

26

31

38

42

52

*49

50

53

*65

95

115

*125

*S!T

*70

69

1,327

42.8

2,630

June

*72

ST

48

37

*29

33

*39

44

39

35

33

32

30

28

26

26

26

29

29

29

33

31

24

19

*12

7.4

6.8

6.2

6.6

5.8

-

878.8

29.3

1,740

July

5.4

5.4

5.5

5.7 575-

4.6

3.5

2.3

2.1

2.3

1.7

.8

1.9

2.0

1.6

2.0

2.6

2.6

2.1

2.6

3.5

3.0

3.5

2.0

1.5

1.4

1.7

3.8

3.0

1.0

.5

87.1

2.81

173

Aug.

0.5

.5

.5

.5

^_4

.8

.6

.6

.9

1.1

1.1

1.0

.8

.7

.7

*.6

.6

.6

.6

1.9

1.6

1.3

1.2

.9

1.1

.9

.6

.4

1.1

1.7

5.5

29.1

0.94

58

Sept.

1.6

.9

.5

.4

*.3

.3

.2 74-

.8

.6

.7

.7

.8

.8

.8

.6

.5

.4

.4

.4

.5

.5

.4

.4

.4

.4

.4

.6

2.1 270-

-

19.8

0.63

39

Calendar year : Max Min Mean Ac-ft

Water year : Max Min Mean Ac-ft

Peak discharge (base, 150 cfs). May 27 or 28 (time and discharge unknown). 

* Discharge measurement made on this day.

Note. No gage-height record May 1 to 28, June 30 to July 3, July 12, 18-25; discharge estimated 

on basis of 7 discharge measurements, recorded range in stage, and records for nearby stations.
PLATEAU CREEK BASIN

Plateau Creek near Collbran, Colo.

Location. Lat 39°15', long. 107°50', in NE£ sec. 26, T. 93., R. 94 W. , on right bank 10 

ID downstream from private bridge, 1? miles downstream from Leon Creek, and 6 miles east 

of Collbran.

Drainage area. 88 sq mi, approximately.

Records available.--August 1921 to September 1927 (monthly discharge) and October 1933 to

 September lyfaj. in reports of Geological Survey. August 1921 to September 1951 in reports of State engineer.

Gage. Water-stage recorder. Altitude of gage is 7,170 ft (by barometer). 

Average discharge.--30 years (1921-51), 97.5 cfs.

Extremes. --Maximum discharge during year, 1,170 cfs May 2 17 (gage height, 4.76 ft); minimum 

daily, 4.0 cfs Nov. 10.

1921-51: Maximum discharge, 2,800 cfs May 28, 1922 {gage height, 6.72 ft), from 

rating carve extended above 1,300 cfs; minimum daily, 3 cfs Sept. 21, 1926.

Remarks. Records good except those for periods of ice effect, which are fair. Slight regu^

 lation by several small reservoirs. Diversions for irrigation of about 900 acres above 

station -ind about 400 acres below station or in Buzzard Creek drainage.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

Oct. 1 to Mar. 30

2.2 3.0

2.4 7.5

2.6 15

31 to Sept. 30

2.3

2.4

2.5

2.6

2.7

7.0 

9.5

27

3.0 

3.3

4.2 

4.5

65

140

300

540

850

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total,

Mean

Ac- ft

Oct.

12

11

*11

10

11

11

111111

10

9.6

9.6

9.6

9.6

9.6

10

10

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

8.9

8.2 8~T

8.6

*8.9

302.6

9.76

60C

Nov.

9.2

10

6.2

11

8.9

10

10

10

7.2

4.O

b6.0

b7 .5

b8.5

9.2

9.2

b8.5

11

11

b!2

bl?

b!2

b!2

bll

bll

bll

bll

bll

blO

bio

bll

-

291.4

9.71

578

Dec.

11

10

b9.5

bll

b!3_

*blO

bll

bll

bll

bll

bll

bll

bll

11

11

10

blO

blO

10

10

blO

blO

blO

10

11

11

bll

blO

bll

bll

bll

329.5

10.6

654

Jan.

bio

blO

11

*11

11

10

10

10

10

10

10

10

9.2

9.6

9.2

9.2

9.2

8.9

*8.9

8.6

9.6

9.2

9.2

9.2

8.9

8.9

8.9

8.9

8.9

*b7.8

b6.5

291.8

9.41

579

Feb.

b6.0

b6.0

b6.5

b7.5

b8.5

9.2

8.9

8.9

8.9

8.9

9.2

9.2

b9.2

b9.5

b9.5

b9.5

b9.5

b9.6

9.2

b8.9

b8.9

8.9

8.9

8.9

8.9

b9.2

9.2

9.6

-

-

245.1

8.75

486

Mar.

b8.9

7.8

8.6

b8. 6

*b8.6

8.2

8.9

9.2

10

9.6

9.2

b9.2

9.2

8.9

8.9

9.6

b9.0

b8.5

b8.5

10

9.2

9.2

b9.0

b9.0

bll

b!2

b!4

bl?

blO

bll

11

296.8

9.57

589

Apr,

12

14

*16

15

15

15

16

14

15

14

b!2

b!2

b!5

21

24

27

31

30

30

35

40

39

42

52

43

48

43

54

75

53

872

29.1

1,730

May

43

38

35

42

59

95

122

143

128

125

167

191

167

*152

131

152

191

218

260

320

32O

300

320

350

*492

7OO

806

817

*650

550

560

8,644

279

17,150

June

468

3TO

221

185

194

248

300

254

224

224

194

185

185

176

179

188

197

194

176

212

212

161

131

108

95

85

71

53

46

44

-

5,520

184

10,950

July

39

*34

28

24

21

21

21

19

18

20

21

18

18

16

I?

19

21

21

18

21

25

22

25

21

19

17

25

24

20

18

18

671

21.6

1,330

Aug.

20

21

25

19

22

*18

17

16

15

12

12

13

10

9.2

9.0

9.0

9.0

9.0

10

18

18

14

11

10

14

11

9.2

9.5

19

59

21

488.9

15.8

97O

Sept.

12

10

9.2

8.8

*8.2

15

15

12

12

8.0

7.8

8.0

8.2

8.2

8.0

7.0

7.0

7.5

11

8.0

9.5

9.0

8.5

7.8

7.2

7.0

7.0

7.5

20

32

-

306.4

10.2

608

Calendar year 1950: Max 958 Min 4.0 Mean 77.5 Ac-ft 56,080

Water year 1950-51: Max 817 Min 4.0 Mean 50.0 Ac-ft 36,220

Peak discharge (base, 830 cfs).--Hay 27 (7 p.m.) 1,170 cfs (4.76 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
84 PLATEAU CREEK BASIN

Buzzard Creek near Collbran, Colo.

Location. Lat 39°16', long. 107°52', in sec. 14, T. 9 S., R. 94 W., on right bank 150 ft 

above county bridge, half a mile upstream from Brush Creek,and 7 miles east of Collbran.

Drainage area.--139 sq mi.

Records available.--August 1921 to September 1927 (monthly discharge only) and October 

1933 to September 1951 in reports of Geological Survey. August 1921 to September 1951 

in reports of State engineer.

Gage.--Water-stage recorder.

Average discharge.--30 years (1921-51), 51.9 cfs.

Extremes.--Maximum discharge during year, 244 cfs May 28 (gage height, 3.32 ft); minimum 

daily, 0.2 cfs Aug. 18.

1921-51: Maximum discharge, 1,630 cfs May 14, 1941 (gage height, 7.80 ft), from 

rating curve extended above 900 cfs; minimum, 0.1 cfs Aug. 27, 1934 (gage height, 0.76 

ft).

Remarks.--Records good above 20 cfs and poor below. Diversions for irrigation of about 

1,300 acres above station. Erie Canal diverts water from Plateau Creek for irrigation 

of about 140 acres above station.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 T73~

*1.3

1.0

.9

.9

.9

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

.7

77

.8

.9

.9

.9

.8

.9

.7

.9

1.2

.9

1.2

*.9

28.5

0.92

57

Nov.

0.9 T70"

1.0

1.0

1.2

1.3

1.3

1.3

1.2

1.0

1.0

1.0

1.1

1.5

1.6

1.6

2.0

2.6

4.3

5.4

6.3

T7T

4.1

3.6

4.1

3.4

3.2

2.6

1.8

1.8

-

66.3

2.28

135

Dec.

2.6

2.4

273- 1.8

2.4

*3.0

3.4

3TT

3.4

3.4

3.2

3.2

3.2

3.0

2.8

3.0

3.4

3.2

2.4

2.6

3.0

2.4

2.1

2.0

2.1

?.l

2.4

2.1

2.0

2.1

2.1

82.5

2.66

164

Jan.

2.3

2.3

2.6

*2.8

3.0

2.8

2.6

2 .6

2.4

2.3

2.4

2.4

2.3

2.1

2.0

2.0

2.1

2.3

*2.3

2.8

3.2

3.7

4.1

4.8

5.7

6.3

7.5

8.8 STB"

*8.5

4.0

113.8

3.67

226

Feb.

2.1 ?73-

2.8

3.3

3.6

3.6

3.4

3.6

3.9

4.1

4.3

5.1 375-

4.0

4.1

3.9

4.5

4.5

4.3

3.9

3.9

4.3

4.5

4.1

3.6

4.5

3.7

3.6

_

_

-

107.4

3.84

2L3

Mar.

3.9

3.6

37T

3.9

*3.9

3.6

3.9

5.5

5.2

4.6

5.0

5.5

5.4

5.4

5.6

5.6

7.0

8.8

8.8

8.5

7.6

7.6

8.6

8.4

9.0

16

IT

12

10

10

9.1

221.7

7.15

440

Apr.

10

9.4

*11

17

17

14

12

13

9 .5

12

8.8

7.8

BTT

11

19

22

27

34

37

37

47

49

50

68

46

52

41

51

69

3T

-

861.5

28.7

1,710

May

38

32

26SB35

71

82

109

91

75

90

101

98

*82

70

75

98

107

113

137

131

124

115

117

*131

163

184

186

T4T

*115

120

3,091

99.7

6,130

June

109 ~9T

76

64

54

52

61

60

42

40

37

30

30

28

34

31

29

36

31

29

46

31

25

20

15

11

9.1

6.6

5.1

3.6

-

1,136.4

37.9

2,250

July

2.8 *274

2.3

2.3

2.1

2.1

2.1

2.0

2.1

2.1

2.1

2.1

2.0

2.0

1.8

2.0

2.1

2.3

2.1

2.3

2.4

1.8

1.8

2.0

1.3

.8

17F

1.3

1.3

1.5

1.0

59.8

1.93

119

Aug.

1.2

1.3

1.3

1.5

1 .5

*1.5

1.3

1.0

.9

2.3

2.3

1.8

2.0

1.8

1.3

1.2

.6

.2 73-

.8

1.0

.9

.8

1.3

1.3

.8

1.3

1.6

2.6

274

2.0

42.1

1.36

84

Sept.

1.3

.8

.6

.4

*74

.4

.4

.5

.6

_ f

.6

.7

.7

.6

.7

.7

.6

.7

.e

.7

.e

.6

.6

.e

.8

1.8

3.4

3.e

-

25.9

o.se

51

Calendar year 1950 : Max 264 Mln 0.3 Mean 29.6 Ac-ft 21,420

Water year 1950-51: Max 186 Min o.2 Mean is.o Ac-ft 11,530

Peal: discharge (base, 550 efs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected bv ice Nov. 2 to Jan. 27, Jan. 31 to Mar. 27.
PLATEAU CREEK BASIN 85

East Fork Big Creek near Collbran, Colo.

Location. Lat 39°06', long. 107°53', in SWi sec. 10, R. 94 W., T. 11 S., on left bank 150 

ft upstream from road bridge, a quarter of a mile upstream from mouth, and 9j miles 

southeast of Collbran.

Drainage area. 5 sqmi, approximately.

Records available.--October '1950 to September 1951.

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during year, 94 cfs May 27 (gage height, 5.64 ft); minimum not 

determined, but probably no flow at times during winter.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Regulation above station by Lambert Reservoir (capacity, about 200 

acre-ft). Diversion by Atchinson Reservoir feeder canal about 1 mile above station 

during winter and spring months only.

Cooperation.--Seven discharge measurements furnished by Bureau of Reclamation.

Rating table, water year 1950-51, except periods of loe effect 

(gage height, In feet, and discharge, in cubic feet per second)

3.8

3.9

4.0

4.1

4.2

4.4

4.5

4.6

2.1 

4.5 

6.3

9.0

4.8 

5.1 

5.4

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

31

33

33

34

35

36

37

28

29

30

31

Total

Mean

Ac- ft

Oct.

J.S

^W

.6

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.2 72"

.2

.2

.2

*.2

11.1

0.36

22

Nov.

0.2 ~7Z

.1

.2

_.!_

.1

.1

.1

.1

.1

b.l

.2

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

-

4.1

0.14

8.1

Dec.

, 0.1

3.1

0.1

6.1

Jan.

0.1

3.1

0.1

6.1

Feb.

0.-.

_

-

2.8

0.1

5.6

Mar.

 0.3

.8

.8

.8

.6

.5

.5

.5

.5

.5

.5

12.3

0.40

24

Apr.

0.5 ~75

.5

.6

.5

.6

.6

.6

.6

.6

.6

.6

.6

.6

.8

3 .0

1.0

1 .0

1.0 1.1

1.2

1.3

2.0

1.8

.9

1.1

.9

2.0

2.5

T73

28.9

0.96

57

May

l.l

TTT

l.l

bl.l

b2.0

b2.5

b3.4

b4.3

3.3

b4.5

b6.5

b6.8

5.8

*4.7

4.4

6.6

8.5

13

20

22

21

19

18

22

*35

50

60 *5S"

*45

35

34

517.7

16.7

1,030

June

25

16

9.4

7.9

*1T

16

*18

16

15

12

15

*21

24

22

*22

22

24

24

23

27

23

18

16

14

*13

11

11

9.8

9.0

8.7

-

503.8

16.8

999

July

8.2

*77¥

7.1

6.6

6.1

5.9

5.8

5.6

5.2

5.2

5.0

5.0

5.4

5.0

4.5

4.4

3.1

2.2

1.9 272"

2.5

2.2

2.1

2.0

2.0

2.0

2.2

2.4

2.1

2.0

1.9

125.2

4.04

248

Aug.

1.9

2.1

2.2

2.1

1.9

*1.8

1.7

1.5

1 .5

1.5

1.5

1.5

1.5

1.4

1.5

1.4

1.4

1.4

1.7

2.2

2.2

2.0

1.6

1.9

2.0

1.5

1.3

1.8

5.6

6.3

57 1

61.8

1.99

123

Sept.

1.4

T7T

.9

*.9

.9

.8

.3

.8

.8

.8

1.0

1.4

1.4

.9

-dl

.3

.3

.3

.3

.3

.4

.3

.3

.3

.3

.3

.3

.4

1.3

.8

-

20.4

0.68

40

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 60 Mln - Mean 3.55 Ac-ft 2,570

* Discharge measurement made on this day. 

b Stage-discharge relation affected b" ice.

Note.--No gage-height record Nov. 24 to Mar. 21 (stage-discharge relation affected by ice most of 

period); discharge estimated on basis of weather records and records for stations on nearby streams.

256684 O - 53 - 7
8R PLATEAU CREEK BASIN

Creek at upper station, near Collbran, Colo.

Location. Lat 39°08', long. 107°55', in NE^ sec. 5, T. 11 S. , R. 94 W. , on right bank at 

downstream side of bridge, about half a mile downstream from Barter Creek, 8 miles 

south of Collbran,, and 9 miles upstream from mouth.

Drainage area. 17 sq mi, approximately.

Records available.--June 1945 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,300 ft (by barometer).

Average discharge. 6 years, 27.7 cfs.

Extremes.--Maximum discharge durlna; year, 184 cfs May 27 (gage height, 3.77 ft); minimum

 daily, 3.3 cfs Mar. 29.

1945-51: Maximum discharge, 474 cfs May 21, 1948 (gage height, 4.67 ft), from rating 

curve extended above 130 cfs; maximum gage height, 4.91 ft May^29, 1947 (result of failure of small reservoir dam); minimum discharge not determined.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Plow regulated by several small storage reservoirs above station for 

irrigation. Diversion above station to Surface Creek in Gunnison River basin.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in 3ubie feet per second)

Oct. 1 to May 11 12 to Sept. 24 Sept. 25-30

2.0

2.1 

2.3

3.0 

4.2 

8.4

2.5 

2.8 

3.1

2.2

2.3 

2.6

7.0

9.5

24

3.0 

3.3 

3.6

55

88

143

2.7 

2.9

7.5

12

Discharge, in cubic feet per second, water year October 195O to September 1951

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

K9

30

31

Total

Mean

Oct.

13 *TS

11

9.9

9.6

8.4

7.2

6.2

5.5

5.3

5.6

5.6

5.6

5.6

5.5

5.6

5.6

5.3

5.3 

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.1

5.3

5.3

5.1

*4±g

200.6

6.47

Ao-ftj 398

Mov.

4.7

4.7

b4.4

4.6

b4.5

4.6

4.6

4.6

b4.4

b4.0

b3.6

W7o

b4.4

4.7

4.9

5.1

5.1

5.1

5.1

5.3 

5.6 B75

5.3

b5.1

5.1

5.1

5.1

5.1

5.1

4.9

-

144.1

4.80

286

Dec.

5.1

5TT

5.1

5.1

5.1

*5.1

5.1

5.1

5.1

5.1

5.1 5'.1

4.9

4.4

4.4

4.S

4.6

4.4

4.6

4.2

TT?

4.2

4.4

4.6

4.4

4.4

4.6

4.6

4.6

4.7

146.4

4.72

290

Jan.

4.7

T76

*4.6

4.4

4.4

4.4

4.6

4.6

4.6

4.7

4.6

4.2

4.4

4.4

4.4

4.2

4.2

4.2

4.2

3.5

375

4.0

4.2

4.2

4.0

4.0

4.5

4.5

4.2

3.8

132.9

4.29

264

Feb.

3.5

775

4.0

4.5

*Ii°

4.8

4.6

4.6

4.6

4.6

4.6

4.6

4.4

4.2

4.0

4.0

4.2

4.2

4.2

3.9

4.0

4.2

4.2

4.0

3.9

3.8

3.8

_

-

118.1

4.22

234

Mar.

3.7

3.7

3.7

3.9

4.0

*4.3

4.3

4.4

4.6

473

4.0

4.0

4.2

4.4

4.6

4.6

4.3

4.3

4.5

4.6 

4.6

*4.6

b3.6

b3.4

b3.5

3.7

3.7

3.6

b3.3 "775"

3.5

125.4

4.05

249

Apr.

3.5

3.6

*3.7

3.8

3.8

3.7

3.7

3.7

3.7

3.7

b3.6

3.6

4.0

4.2

5.3

6.5

12

11

11 

11

11

11

13

12

12

11

12

16

TF

14

-

237.1

7.90

470

May

12

1112-

11

18

21

29

38

30

40

58

62

55

*45

42

49

57

71

78 

79

80

71

71

82

102

139

143

TZS

*116

112

120

1,980

63.9

3,930

June

94

82

65

52

49

59

71

80

80

80

66

59

61

61

61

62

63

65

65 

67

65

55

51

47

46

44

41

40

37

3J>

-

1,804

60.1

3,580

July

36

*32

30

29

28

30

30

30

34

35

35

35

34

33

32

37

36

37

37 

40

40

40

42

43

44

44

40

37

37

37

37

1,111

35.8

2,200

Aug.

34

3£

30

27

25

*21

20

18

17

16

15

14

16

16

18

19

19

20

22 

22

22

17

14

16

16

14

12

T2

22

22

12

600

19.4

1,190

Sept.

10

10

10

10

*9.5

9.2

9.?

9.5

10

10

10

11

TT

10

10

9.5

10

11

10 

9.5

10

9.2

9.0

8.8

*8.5

8.5

8.7

8.7

11

10

-

291.8

9.73

579

Calendar year 1950: Max 163 Mln - Mean 25.2 Ac-ft 18,210

Water year 1950-51: Max 143 Mln 3.3 Mean 18.9 Ac-ft 13,670

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Jan. 21 to Mar. 

most of periodTj discharge estimated on basis 

ords for stations on nearby streams.

22 (stage-discharge relation affected by ice during 

>f 3 discharge measurements, weather records, and rec-
PLATEAU CREEK BASIN. 87

Cottonwood Creek at upper station, near Molina, Colo.

Location. Lat 39°08', long. 108°00', in SE^ sec. 3, T. 11 S. , R. 95 W. , on left bank 

o miles southeast of Molina and 7 miles upstream from mouth.

Drainage area. 16 sq mi, approximately. 

Records available.--May 1945 to September 1951.

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 7,500 ft (by barometer) .

Average discharge. 6 years, 16.4 cfs.

Extremes. Maximum discharge during year, 34 cfs May 20 (gage height, 2.08 ft); minimum 

daily, 2.5 cfs, Jan. 22.

1945-51: Maximum discharge, 101 cfs May 18, 1948 (gage height, 3.01 ft), from rating 

curve extended above 45 cfs; minimum daily, that of Jan. 22, 1951.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnich are fair. Flow regulated by several small storage reservoirs above station for 

irrigation (combined capacity, about 3,200 acre-ft). No diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 6-14) 

Oct. 1-31 Nov. 1 to May 5 May 6 to Sept. 30

1.2

1.4

1.5

4.0

9.0

12

2.1 

2.4 

2.8

3.0 

6.0 

11.7

1.5 

1.8 

2.1

8.3

19

35

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

12

IT *11

11

11

10

10

10

10

10

9.6

8.7

7.9

7.3

6.8

6 5

6.0

6.0

5.5

5.3

5.5

5.3

5.1

5.1

4.9

4.7

4.9

4.7

4.4

4.4

4.2

228.8

7.38

454

Nov.

*3.7

b3.7

3.6

b4.1

b4.3

4.7

4.7

4.7

b4.1

b3.8

b3.6

b4.0

b4.4

5.0

4.9

4.9

4.9

5.0

5.4

5.3

5.5

5.3

b4.9

b4.8

b4.7

4.8

4.9

b4.7

b4.5

4.9

-

137.8

4.59

273

Dec.

-375 b4.5

 375 3.0

4.0

3.7

*3.6

3.6

3.7

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.5

3.5

3.5

3.5

3.5

3.5

3.3

3.3

3.3

3.3

3.3

110.2

3.55

219

Jan.

3.1

3.0

*3.3

3.4

3.5

3.3

3.2

3.2

3.2

3.2

3.3

3.4

3.5

3.5

3.5

3.5

3.5

3.5

3.5

3.4

3.0

 ST5 2.5

3.5

3.5

3.5

3.7

4.0

TO

4.0

3.5

105.2

3.59

209

Feb.

770" 3.0

3.5

3.7

*4.0

4.0

4.0

4.2

4.4

4.5

4.5

4.3

4.2

4.0

4.0

4.0

4.3

4.5

4.5

4.5

4.7

5.0

5.5

575

5.5

5.5

5.5

5.0

_

_

-

123.3

4.40

245

Mar.

5.0

57?

5.4

5.6

5.8

*5.8

5.8

5.8

5.8

5.8

5.6

5.4

5.6

5.8

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.2

6.4

67?

6.2

6.2

6.2

182.0

5.87

361

Apr.

6.3

*6.4

6.5

6.5

6.5

6.2

6.6

6.5

6.6

6.6

b7.1

7.5

7.2

7.4

7.6

8.0

8.1

8.2

8.6

8.8

9.2

8.8

9.8

9.6

9.2

9.2

9.0

10

Iff

8.8

236.8

7.89

470

May

8.6

8.1

876

9.2

11

13

17

16

14

18

22

18

16

15

*19

20

20

22

24

25

27

23

22

24

24

23

23

28

29

215

26

599.5

19.3

1,190

June

26

28

26

26

26

28

*31

31

30

29

29

28

25

25

23

21

?T

22

22

22

22

24

24

24

24

27

30

28

26

26

774

25.8

1,540

July

24

75

*22

22

23

22

22

21

20

22

22

24

24

24

24

24

24

24

24

24

24

22

22

20

20

19

??

22

20

19

19

690

22.3

1,370

Aug.

18

15

18

18

17

17

*17

16

15

16

16

15

14

13

13

13

13

12

12

14

14

13

12

12

JL1

11

12

13

16

16

14

449

14.5

891

Sept.

14

T3

12

*13

12

11

11

11

11

11

11

11

11

11

10

10

10

9.9

9.7

9.7

9.9

9.3

8.9

8.9

8.6

8.6

8.6

8.6

9.9

9.3

-

312.9

10.4

621

Calendar year 1950: Max 59 Mln - Mean 14.9 Ac-ft 10,790

Water year 1950-51: Max 31 Mln 2.5 Mean 10.8 Ac-ft 7,840

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 13-31, Nov. 3, Dec. 2 to Apr. 1 (stage-discharge relation affected by Ice during most of period); discharge estimated on basis of 4 discharge measurements, weather 

records, and records for stations on nearby streams.
PLATEAU CREEK BASIN

Bull Creek at upper station, near Molina, Colo.

Location.--Lat 39°07' , long. 108°02', in SW^ sec. 5, T. 11 S. , R. 95 W., on right bank 

t> mlJ.es upstream from mouth and 6 miles south of Molina.

Drainage area. 10 sq mi, approximately.

Records available.--May 1945 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,200 ft (by barometer).

Average discharge. 6 years, 8.16 cfs.

Extremes. Maximum discharge during year, 30 cfs May 28 (gage height, 1.85 ft); maximum 

 gage neight, 2.16 ft Mar. 10 (ice jam); minimum daily discharge, 0.7 cfs Nov. 11.

1945-51: Maximum discharge, 82 cfs May 19, 1948 (gage height, 2.42), from rating

curve extended above 35 cfs; maximum gage height, 2.94 ft Oct. 12, 1946 (beaver dam);

minimum daily discharge, that of Nov. 11, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record. 

Which are fair. Plow regulated by several small reservoirs for irrigation. Diversions 

for irrigation of about 20 acres above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 1 Jan. 2 to Sept. 30

1.0

1.1

1.2

1.3

1.4

0.2 

1.0 

2.2 

4.0 

6.6

1.0

1.1

1.2

1.3

1.4

0.7 

1.4 

2.3 

4.0 

6.5

1.6

1.7 

1.9

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

4.3

4.3

*4.3

4.0

4.0

4.3

4.0

4.3

4.0

4.5

3.6

1.8

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.6

1.6

1.6

1.7

1.7

1.6

1.4 *T7l

78.7

2.54

156

Nov.

1.2

1.2

1.0

1.2

1.1

1.2

1.2

1.2

.9

b.8

b.7

b73

b.9

1.0

1.0

1.0

1.0

1.0

1.2

1.2

1.4

IT?

bl.l

bl.O

bl.O

bl.l

bl.O

b.9

b.9

bl.O

31.4

1.05

62

Dec.

bl.l

b.9

b.8

bl.2

bl.O

bl.O

*1.0

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.9

.9

1.0

b.9

b.9

b.8

b.9

bl.O

b.9

27.5

0.89

55

Jan.

bl.l

1.1

*1.Z

T7?

1.2

1.1

l.l

1.1

l;l

1.1

l.l

l.l

1.1

1.1

1.1

1.0

T7o

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

32.8

1.06

65

Feb.-

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

b.9

b79

b.9

1.1

1.0

1.0

1.0

1.0

1.0

1.0 1.1 1.1

1.2

1.1

1.1

1.0

_

-

28.4

1.01

56

Mar.

0.9 ~79

1.0

1.0

1.0

*1.0

1.0

1.1

1.1

b6.0

b!3

^bT.O

b3.0

b2.0

bl.8

1.8

bl.6

bl.4

bl.6

bl.7

1.8

1.8

bl.6

bl.6

bl.7

1.8

1.8

bl.8

bl.7

bl.8

1.9

69.2

2.23

137

1

Apr.

1.8

*bT75

bl.8

1.9

2.1

2.1

b2.0

2.0

2.0

2.0

bl.8

bl.8

b2.0

2.1

2.3

2.6

2.6

2.8

3.0

3.3

3.7

3.7

4.5

4.5

4.0

3.8

3.7

5.0

5.8

4T5

87.0

2.90

173

Hay

3.7

3.2

3.0

T^

4.8

6.2

7.9

8.6

8.6

10

12

11

9.3

8.2

*8.6

9.3

9.6

11

12

14

20

18

14

13

14

16

22

28

?2

*18

17

366.3

11.8

727

June

17

18

17

16

16

17

16

14

12

13

14

14

14

14

14

14

14

15

14

15

14

12

11

10

10

9.6

9.6

9.6

9.3

8.6

-

401.7

13.4

797

July

8.2

7.6

*8.2

8.2

9.0

9.3

11

11

11

12

14

To

9.6

9.3

9.3

9.3

9.3

9.0

9.0

10

9.3

9.3

9.6

9.3

9.0

9.0

7.6

6.5

7.6

7.2

8.2

286.9

9.25

569

Aug.

~~9.3 10

8.6

8.2

7.2

6.2

*7.6

9.6

10

8.6

7.2

6.5

6.5

5.8

6.0

6.0

5.8

5.5

5.5

6.0

5.5

5.2

4.2

3.8

4.8

4.5

4.0

4.8

6.2

5.8

5.4

200.3

6.46

397

Sept.

5.4

5.4

5.4

6.8

*8.4

5.0

5.0

5.0

5.0

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

2.5

3.5

2.5

-

104.9

3.50

208

Calendar year 1950: Max 30 Mln 0.7 Mean 6.62 Ac-ft 4,790

Water year 1950-51: Max 28 Mln 0.7 Mean 4.70 Ac-ft 3,400

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Feb. 22 to Mar. 5, Aug. 30 to Sept. 30; dlsch 

' 1 discharge measurement, weather records, and records for stations on nea

. 

of 1 di

arge estimated on basis 

earby streams.
PLATEAU CREEK BASIN

Mesa Creek near Mesa, Colo.

Location.- -La t 39°05', long. 108°07', in SWij sec. 16, T. 11 S., R. 96 W. , on right bank an 

eigntJi of a mile upstream from unnamed stream, 5| miles southeast of Mesa, and 7^ miles 

upstream from mouth.

Drainage area. 7 sq mi, approximately.

Records available .--April 1941 to September 1951.

Gage. Water-stage recorder and log control. Altitude of gage is 7,400 ft (by barometer). 

Prior to Apr. 29, 1943, staff gage at site half a mile upstream at different datum.

Average discharge .--10 years, 12.0 cfs.

Extreme s . Maximum discharge during year, 27 cfs June 1 (gage height, 1.54 ft); maximum 

gage neight, 3.41 ft Jan. 31 (ice jam); minimum daily discharge, 1.3 cfs Apr. 2.

1941-51: Maximum discharge observed, 140 cfs May 12, 1941 (gage height, 2.00 ft, site 

and datum then in use), from rating curve extended above 50 cfs; maximum gage height, 

that of Jan. 31 (ice jam); minimum daily discharge, 0.6 cfs Mar. 9, 11-14, 1946, Mar. 18- 

20, 1948.

Remarks . - -Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Flow partly regulated by small reservoirs above station. No diversion 

above station.

Rating table, water year 195O-51, except periods of ice effect

(gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method used Aug. 18-21, 24-29)

0.8 

2.3 

5.0

9.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

7.0

*7.4

7.0

6.6

7.0

6.6

6.6

7.0

7.4

3.2

-g-.o 10

9.0

9.0

9.0

3.6

8.6

8.6

8.S

3.6

8.6

3.6

8.2

3.6

3.6

3.6

8.6

3.2

3.2

3.6

3.6

253.2

3.17

502

Nov.

*7.4 STB5.4

5.4

5.4

5.0

4.7

4.7

5.0

b4.5

b4.0

b4.5

5.0

4.7

5.0

5.0

4.7

3.3

4.7

2.5

2.5

2.7

b2.7

b2.7

b3.0

3.2

3.2

b3.2

b3.5

3.3

-

127.5

4.25

253

Dec.

2.7

2.1

b2.0

b475

b5.0

*4.4

5.4

574

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.0

5.4

b5.4

5.4

5.4

b5.4

b5.4

b5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

5.4

155.3

5.01

303

Jan.

5.4

5.4

*5.4

5.4

5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

b5.4

5.4

*5.4

5.8

b5.3

b3.0

2.5

b2.5

2.5

2.5

2.5

2.5

2.5

b2.5

a4.0

*a3.0

143.3

4.64

235

Feb.

a7.0

a6.0

a5.0

a4.0

a47o"

34.2

a4.4

a4.6

a4.8

a5.0

4.7

4.4

b4.4

b4.2

b4.0

b4.5

5.0

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

b4.7

4.7

4.7

_

-

131.9

4.71

262

Mar.

5.0

4.7

4.7

4.7

*4.7

4.7

4.4

4.4

4.4

4.1

b4.1

b4.1

4.1

4.1

4.1

4.1

b4.1

b4.1

b4.1

4.4

4.4

4.4

b4.4

b4.4

b4.4

4.7

4.4

b4.4

b4.4

4.7

4.7

136.4

4.40

271

Apr.

3.5

*1.3 277

3.5

4.1

4.4

4.4

4.4

4.4

4.4

b4.4

b4.4

4.4

5.0

5.4

5.4

5.0

5.4

5.3

5.3

5.8

£.8

6.6

 ST6 7.0

7.0

6.2

7.0

7.0

6.2

-

153.3

5.11

304

May

5.0

2.5

4.4

6.6

10

12

12

12

10

11

12

10

7.0

6.6

*6.6

7.4

11

12

12

12

16

15

14

14

15

15

15

16

13

*21

rr

360.1

11.6

714

June

22

24

13

15

13

12

12

12

13

13

13

12

12

12

12

12

12

16

19

20

13

17

13ie

13

15

15

14

15

15

457

15.2

906

July

13

12

*12

13

14

16

13

13

17

21

22

22

22

22

21

21

19

13

17

15

14

12

13

12

12

14

12

10

"977 9.7

9.7

431.1

15.5

954

Aug.

3.6

9.7

9.7

9.7

9.7

*9.0

3.6

9.0

3.6

3.6

8.6

3.6

3.6

3.2

7.9

7.9

8.2

8.2

9.0

9.0

9.0

9.0

3.6

8.2

3.2

3.2

7.8

7.8

12

11

9.0

274.0

3.34

543

Sept.

3.6

872

3.2

7.4

*8.2

8.6

8.6

3.2

8.2

8.2

3.2

8.2

3.2

8.2

8.2

8.2

.3

.4

.4

.4

.4

.4

.4

~75.0

.0

.4

.8

8.6

3.2

-

236.3

7.39

47O

Calendar year 1950 : Max 2O Mln 2.o Mean 9.63 Ac-ft 6,97O

Water year 195O-51 : Max 24 Min 1.3 Mean 7.97 Ac-ft 5,770

* Discharge measurement made on this day.

a No gage-height record (stage-discharge relation affected by Ice during most of period); discharge 

stimated on basis of 1 discharge measurement, weather records, and records for stations on nearby

streams. ,

b Stage-discharge relation affected by ice
90 PLATEAU CREEK BASIN

Plateau Creek near Cameo, Colo.

Location. Lat 39°11', long. 108°16', in SW£ sec. 18, T. 10 S., R. 97 W., on left bank 1.1 

miles upstream from mouth and 4 miles northeast of Cameo.

Drainage area. 604 sq ml.

Records available.--April 1936 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,800 ft (by barometer). Prior to Aug. 

2~7, 1936, staff gage at same site and datum.

Average discharge. 15 years, 213 cfs.

Extremes.--Maximum discharge during year, 1,480 cfs May 28 (gage height, 4.94 ft); minimum 

daily, 18 cfs Aug. 16-19.

1936-51: Maximum discharge, 3,920 cfs May 27, 1942 (gage height, 7.73 ft), from rating curve extended above 3,000 cfs; minimum daily, 16 cfs July 14, 15, Aug. 17, 18,1940.

Remarks.--Records good except those for period of ice effect, which are fair. Natural flo-» 

of stream affected by storage reservoirs, diversions for irrigation of about 22,000 

acres, and return flow from irrigated areas.

Revisions (water years).--W 979: 1942.

Rating table, water year 1950-51, except periods of loe effect 

(gage height, Jn feet, and discharge, In cubic feet per second)

1.2

1.4

1.5 42

1.7 

2.0 

2.5

154

300

3.0 

4.0 

5.0

480

910

1,540

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

51

5T

*55

55

56

53

51

53

56

55

55

53

51

51

53

55

53

55

55

56

"SB" 58

56

53

55

53

55

56 

55

51

51

1,674

54.0

3,320

Nov.

*51

53

53

53

56

56

56

56

58

40

35

25

56

66

70

58

70

70

82

TO

78

78

70

68

68

72

70

66 

62

68

-

1,866

62.2

3,700

Dec.

78

68

53

*70

74

4050-

60

65

70

76

78

76

78

74

72

66

68

74

72

64

60

60

55

60

55

50

50 

50

45

45

1,956

63.1

3,880

Jan.

40

*35

35

40

35

35

35

35

35

35

45

40

40

40

45

50

50

*50

55

50

50

50

50

55

60

60

65

70 

*75

^5

50

1,475

47.6

2,930

Feb.

40

15

45

50

55

60

60

60

60

60

65

70

70

70

70

70

66

70

72

62

64

72

74

78 55

60

72

70

_

-

1,778

63.5

3,530

Mar.

56

72

64

58

*T6

74

74

74

74

72

72

55

68

64

64

66

55

51

49

62

66

64

55

55

60

64

72

62 

47 56-

56

1,957

63.1

3,880

Apr.

55

51

51

62

*70

68

62

58

56

51

42

T?

42

47

56

62

76

80

82

85

99

114

109

128

126

116

114

106

144

154

2,408

80.3

4,780

Hay

116

102

80

 §5 74

144

*196

249

243

204

234

291

282

261

202

204

258

307

370

472

516

484

492

512

*632

865

1,040

*1,160 

970

765

736

12,546

405

24,880

June

 552 712

402

321

279

324

*394

422

310

318

294

246

231

225

222

231

246

261

231

234

314

240

188

154

136

118

106

80 

68

60

-

7,919

264

15,710

July

 51 56

*38

31

28

28

27

24

24

24

24

24

23

23

21

22

24

24

25

25

24

23

24

24

23

21

21

21 

22

21

21

811

26.2

1,610

Aug.

21

23

24

28

82

31

26

*24

23

20

20

20

20

20

20

18

Te

18

18

26

28

24

23

23

24

24

22

28 

75

118

T5

935

30.2

1,850

Sept.

32

28

28

26

24

24

*23

22

 §T 21

21

21

23

a24

a24

a23

a22

a22

a22

a25

a25

a23

a22

a21

a21

a21

a22

a27 

a35

a50

743

24.8

1,470

Calendar year 1950: Max 1,190 Mln 30 Mean 155 Ao-ft 111,900

Water year 1950-51: Max 1,160 Mln 18 Mean 98.8 Ac-ft 71,540

Peak discharge (base. 1.150 cfs). May 28 (12:30 a.m.) 1,480 ofs (4.94 ft). 

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of recorded range In stage, weather records, 

and records for nearby stations.

Note. Stage-discharge relation affected by Ice Nov. 10-12, Dec. 6-10, Dec. 22 to Feb. 16.
GUNNISON RIVER BASIN 91

Location. Lat 38°49'05", long. 106°36'15", at dam in sec. 24, T. 14 S., R. 83 W. , on 

Taylor River, just downstream from Taylor Park, and 17 miles northeast of Almont.

Records available.--October 1938 to September 1951 in reports of Geological Survey. Sep-

 tember 1937 to September 1938 in files of Bureau of Reclamation.

Gage. Staff gage read once or twice daily. Datura of gage is 9,187 ft above mean sea level 

^TBureau of Reclamation bench mark); gage readings have been reduced to elevations above 

mean sea level.

Extremes. Maximum contents observed during year, 109,000 aore-ft June 27-30 (elevation,

 y,331.30 ft); minimum, 35,240 acre-ft Oct. 1, 2 (elevation, 9,282.85 ft).

1938-51: Maximum contents observed, 109,700 acre-ft June 7-12, 1948 (elevation, 

9,331.65 ft); minimum (after first filling), 9,950 acre-ft Sept. 20-22, 1940 (elevation, 

9,243.55 ft).

Remarks. Reservoir is formed by an earth-and rock-fill dam. Dam completed by Bureau of 

Reclamation in September 1937. Capacity of reservoir, 106,200 acre-ft between elevations 9,187 ft (bottom of outlet gates) -and 9,330 ft (crest of spillway). No dead 

storage. Water used for irrigation in Uncompahgre Valley. No other reservoirs of any 

consequence in Gunnison River basin. Figures given herein are of- usable contents.

Cooperation.--Records furnished by Uncompahgre Valley Water Users Association. 

Revisions (water years). W 1083: 1940(m) , 1942(M) , 1945-46.

Monthly elevation and contents, water year October 1950 to September 1951

Date

Calendar year 1950...

Water year 195O-51...

Elevation 

(feet)

-

9 319 75

-

Contents 

(acre-feet)

-

-

Change In contents 

during month 

(acre-feet)

-24,670

+10,930
GUNNISON RIVER BASIN

Taylor River below Taylor Park Reservoir, Colo.

Location. Lat 38 D 48'50", long. 106°36'40", in sec. 24, T. 14 S., R. 83 W., on left bank 

50 ft downstream from bridge on State Highway 306, a quarter of a mile downstream from 

Taylor Park Reservoir Dam, 3 miles upstream from Lottis Creek, and 16 miles northeast 

of Almont.

Drainage area.--245 sq mi.

Records available.--October 1938 to September 1951. September 1933 to August 1934 (in 

reports of Geological Survey), June 1929 to August 1934 (in reports of State engineer), 

at site at Taylor Park (records practically equivalent if flow of Texas and Willow 

Creeks is added).

Gage.--Water-stage recorder. Datum of gage is 9,168.67 ft above mean sea level (Bureau 

of Reclamation bench mark). Since Oct. 15, 1946, chain and staff gages just downstream 

from reservoir outlet at different sites and datums, read once daily during winter 

months.

Average discharge.--17 years (1929-33, 1938-51), 183 cfs.

Extremes.--KaxTmum discharge during year, 915 cfs Sept. 12 (gage height, 3.93 ft); minimum

 Sally, 16 cfs Dec. 3.

1938-51: Maximum discharge, 1,440 cfs June 4, 1948 (gage height, 4.80 ft); no flow 

May 1 to July 3, 1940, May 7-22, 1942, May 5-21, 1943.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Chain gage read once daily and each time reservoir gates were changed during periods 

Nov. 11 to Apr. 8, Apr. 17 to May 28. Flow regulated by Taylor Park Reservoir (see 

preceding page). One small diversion from Willow Creek above reservoir.

Cooperation.--Gage-height record and seven discharge measurements furnished by Uncompahgre 

Valley Water Users Association.

Revisions.--W 979: Drainage area.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Nov. 10,

May 29 to Sept. 30 

021 2.0

Nc 11 to May 28

13

1.5 142

1.9 220

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

106

TOT

75

58

56

*48

42

42

39

41

39

39

37

4T

41

41

42

43

43

42

44

42

44

44

44

42

43

46

46

43

*42

1,501

48.4

2,980

Nov.

42

42

42

42

42

42

42

43

IT

32

2055-

28

30

29

27

27

27

27

27

24

21

22

23

23

23

23

23

23

23

-

910

30.3

1,800

Dec.

23

27T

16TB"

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

590

19.0

1,170

Jan.

19

W

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

589

19.0

1,170

Feb.

19

W

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

21

21

225T"

22

22

22

_

_

-

551

19.7

1,090

Mar.

22

2T

29

29

29

29

29

29

29

29

29

33

40

40

40

40

40

40

40

40

42

46

46

46

46

46

52

54

595"9~

59

1,215

39.2

2,410

Apr.

59

52

52

52

52

52

52

52

a90

al90

a360

a460

a53TT

a350

a230

al30

45

23

100

220

88

28

29

29

29

29

21

17

IT

17

-

3,355

112

6,650

May

17

TT

17

18

19

20

21

21

21

21

21

21

21

21

21

21

21

21

21

21

21

21

21

20

19

19

19

21

24

2T

*23

633

20.4

1,260

June

23Z3"

23

27

26

23

23

23

23

23

23

23

23

23

24

30

32

33

33

35

*113

*269

198

444

590

670

700 593"

655

622

-

5,467

182

10,840

July

594

5W

524

507

500

476

454

437

406

378

*353

336

319

304

292

271

262

271

274

283

289

292

274

233

259

232

226

3T5T

304

289

301

10,843

350

21,510

Aug.

292

274

286

316

332

316

*274

223

153 THE"

426

430

*440

*521

521

521

560

670 STo~

665

665

665

665

665

665

665

660

665

650

650

650

15,311

494

30,370

Sept.

650

650

660

720

*735

785

785

785

790

835

880

910

9TU

905

905

900

890

890

880

830

825

815

740

630

582

578

582

578

578

566

-

22,769

759

45,160

Calendar year 1950: Max 900 Min is Mean 204 Ac-ft 147,800

Water year 1950-51: Max 910 Min is Mean 175 Ac-ft 126,400

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of valve openings, at dam and record fo 

station at Almont.

Note.--Discharge computed from chain-gage readings Nov. 11 to Apr. 8, Apr. 17 to May 28,
GUNNISON RIVER BASIN 93

Location. Lat 38°40', long. 106"SI 1 , in sec. 22, T. 51 N., R. IE., at Almont, on right

 bank 10 ft downstream from bridge on State Highway 306 and 800 ft upstream from confluence with East River.

Drainage area. 440 sq mi, approximately.

Kecoras available.--July 1910 tc September 1931 and October 1933 to September 1951 in reports or ueoiogical Survey. July 1910 to September 1951 in reports of State engineer.

Gage.--Water-stage recorder. Datum of gage is 8,010.76 ft above mean sea level, datum of

 T929. Prior to Apr. 16, 1922, staff gage on center pier of bridge 10 ft upstream at 

same datum. Apr. 16, 1922, to August 1934, water-stage recorder at same site and datum 

as staff gage.

Average discharge.--41 years (1910-51), 345 cfs.

JSXT:remes.--Maximum discharge during year, 1,040 cfs June 27 (gage height, 3.25 ft); mini-

 mum daily, 40 cfs Feb. 1.

1910-51: Maximum discharge observed, 3,760 cfs June 9, 1920 (gage height, 5.0 ft), 

from rating curve extended atove 2,300 cfs; minimum before storage began in Taylor Park 

Reservoir, 50 cfs on several days in August 1913 (gage height, 1.2 ft); minimum daily, 

24 cfs Mar. 12, 1938.

Remarks. Records good except tl"ose for periods of ice effect or no gage-height record,

 which are fair. Flow partly regulated by Taylor Park Reservoir (see p. 91 ), 24 miles

above station. Diversions for irrigation of about 360 acres above station. 

Revisions. W 509: Drainage area. Revised figures of gage height, in feet, and discharge,

 in cucic feet per second, for the periods July 16-22, Aug. 13-19, 1911, superseding 

those published in Water-Supply Paper 309, are given herewith:

Date

July 16 

17 

18 

19 

20

Gage 

height

2.8 

2.8 

2.8 

2.8 

2.7

Discharge

760 

760 

76O 

760 

670

Date

July 21 

22 

Aug. 13 

14 

15

Month

Ju 

An

Calendar year 1911 ..........

Gage 

height

2.7 

2.7 

2.2 

2.2 

2.2

Maximum

1,390 

450 

2,120

Discharge

670 

670 

330 

330 

330

Minimum

450 

280 

100

Date

Aug. 16 

17 

18 

19

Mean

831 

345 

461

Gage 

height

2.2 

2.2 

2.2 

2.2

Discharge

330 

330 

330 

330

Runoff In 

acre-feet

51,080 

21,230 

333,400

Rating table, water year 1950-51, except periods of lee effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.3 

1.6 

2.0

100

236

2.5 

3.0 

3.3

485

820

1,080

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

157

141

108

106

*100

87

85

85

85

85

85

85

85

89

93

91

91

89

89

89

89

91

98

106

106

103

100

100

98

98

3,064

98.8

6,080

Nov.

*100

103

100

106

106

106

106

106

103

80

75

80

85

93

89

85

80

75

96

91

80

85

80

76

78

89

78

78

85

93

-

2,687

89.6

5,330

Dec.

87

75

55

65

*55

45

65

75

80

70

68

68

60

68

78

76

62

60

68

68

66

66

66

66

68

66

66

66

70

70

70

2,083

67.2

4,130

Jan.

70

70

*70

7:5

75

7D

65

5}

FD

7}

63

63

63

64

73

63

63

63

69

6G

64

70

68

68

66

64

66

70

72

68

*68

2,091

67.5*

4,150

Feb.

40

50

60

70

75

76

68

65

65

65

68

72

68

64

64

66

68

68

70

70

70

70

72

72

74

75

75

75

_

-

1,895

67.7

3,760

Mar.

78

80

82

82

82

82

*82

78

74

74

74

80

82

84

84

82

76

76

74

80

82

86

96

96

96

93

100

103

103

106

Too

2,647

85.4

5,250

Apr.

103

89

*93

93

93

91

91

93

103

200

360

470

158

375

312

204

134

93

111

232

106

111

120

134

131

134

111

125

141

120

-

5,031

168

9,980

May

*108

103

100

117

144

196

204

212

178

189

212

224

208

182

182

182

192

204

224

271

280

271

280

294

312

386

503

624 szj

552

564

8,322

268

16,510

June

*539

468

414

380

350

350

360

386

386

370

365

38"0" 345

397

414

430

485

503

521

497

527

722

539

771

927

999

1,020

999

954

892

-

16,690

556

33,100

July

844

778

750

729

708

666

624

597

564

*533

509

480

458

452

430

408

397

408

414

419

436

424

397

408

386

365

350

424

446

419

430

15,653

505

31,050

Aug.

424

419

468

485

503

452

*419

350

271

224

497

533

533

604

610

604

617

743

750

764

764

764

764

750

750

743

743

743

736

743

736

18,506

597

 36,710

Sept.

729

729

715

757

750

*799

806

799

799

860

900

"9T5 945

945

945

936

936

927

927

868

876

868

806

708

652

645

645

645

652

645

-

24,159

805

47,920

Calendar year 1950: Max 927 Mln 45 Mean 300 Ac-ft 217,000

Water year 1950-51: Max 1,020 Mln 40 Mean 282 Ac-ft 204,000
GUMISON RIVER BASIN

East River near Crested Butte, Colo.

Location. Lat 38°51'50", long. 106°54'30", in NE^ sec. 5, T. 14 S., R. 85 W., on right

 bank at highway bridge, 1.2 miles downstream from Brush Creek, 4 miles upstream from 

Slate River, and 4j miles east of Crested Butte.

Drainage area.--89.2 sq mi.

Records available. October 1939 to September 1951 (discontinued).

Gage. Water-stage recorder. Altitude of gage is 8,880 ft (from river-profile map). May

 5 to Nov. 20, 1940, staff gage at site 1 mile downstream at different datum. Apr. 20 

to Oct. 16, 1941, staif gage at present site and datum.

Average discharge. 12 years, 134 cfs.

Extremes. Maximum discharge during year, 1,170 cfs June 18 (gage height, 2.90 ft); minimum

 daily, 13 cfs Feb. 1.

1939-51: Maximum discharge, 1,270 cfs May 19, 1948; maximum gage height, that of 

June 18, 1951; minimum not determined.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about 400 acres above station.

Revisions (water years). W 1179: 1941.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, J.n cubic feet per second)

0.0 

.2 

.5

.7

1.0 

1.5 

2.0 

2.7

136

260

480

1,010

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

39

41

3g

37

37

*35

34

34

34

32

32

32

31

30

31

33

32

30

30

30

29

28

28

26

26

26

25

25

25

26

26

963

31.1

1,910

Nov.

26

*28

25

28

27

29

29

29

26

22

b24

b27

b28

27

28

b25

28

28

30

32

31

T2" 33

30

b27

b27

t>26

b26

b25

b24

-

827

27.6

1,640

Dec.

25

b24

22

26

*1l3

"gy 20

26

26

25

25

25

25

25

25

25

23

22

23

24

21

21

21

22

22

21

21

20

22

22

22

717

23.1

1,420

Jan.

22 ~SI

22

22

21

*21

19

16

20

22

21

21

20

21

22

21

21

21

21

19

18

21

20

19

19

18

19

19

19

*16

16

618

19.9

1,230

Feb.

15

15

17

19

20

T§

16

16

16

17

18

17

14

14

15

16

16

16

16

15

16

16

16

16

15

16

16

_

-

449

16.0

891

Mar.

15

17

16

15

16

*17

17

17

18

20

19

18

19

19

19

19

18

17

17

19

18

19

18

18

19

20

21

*20

19

20

20

564

18.2

1,120

Apr.

20

20

*20

b21

b21

b20

b20

b20

b20

b20

b!9 b'50"

b20

b23

b25

b30

b35

41

43

47

52

55

60

63

69

78

75

98

~56 113

-

1,264

42.1

2,510

May

*78

72

71 "84

115

154

195

225

236

254

284

302

269

230

215

218

ZVf.

287

350

420

400

375

395

410

445

510

698

-S55 898

738

*650

10,670

344

21,160

June

582

450

380

318

294

314

380

450

470

470

420

455

*575

596

634

802

874

July

554

498

534

516

465

415

425

420

385

*360

330

314

287

272

263

254

242

986 2i2

1,000

91*

898

890

802

754

746

770

746

714

658

610

-

18,952

632

37,590

242

248

251

208

203

193

179

170

179

167

154

151

163

9,284

299

18,410

Aug.

151

167

T53" 310

186

163

136

*126

111

104

96

91

86

82

75

71

72

72

72

79

86

82

76

79

79

68

64 55

68

93

72

3,265

105

6,480

Sept.

63

65

55

53

52

*51

49

48

47

45

45

51

46

43

42

41

39

38

39

39

44

42

37

35

34

35

33

32

T6

39

-

1,323

44.1

2,620

Calendar year 1950: Max 800 Mln 12 Mean 127 Ac-ft 92,190

Water nauei year yeo-i. 1950-51: iaau-oi; Max l*lclA 1,000 i.,ULfU Mln P1J.I1 13 10 Mean Fieall 134 10* Ac-ft HU-10 96,980 9D,9OU

Peak discharge (base, 870 cfs). May 28 (2 a.m.) 1,000 cfs (2.69 ft); June 18 (11 p.m.) 1,170 cf 

(2.90 ft).
CJUNNISON RIVER BASIN 95

Slats River near Crested Butte, Colo.

Location. Lat 38°52'00", long. 106°57'50", in sec. 2, T. 14 S., R. 86 W., on right bank 

hair a mile downstream from Coal Creek and 1 mile east of Crested Butte.

Drainage area. 69.0 sq mi.

Records available.--October 1940 to September 1951 (discontinued). April to September 1940 

in files or .Bureau of Reclamation.

Sage. Water-stage recorder. Datum of gage is 8,826.88 ft above mean sea level, datum of 

T929. Prior to Oct. 16, 1941, staff gage at same site and datum.

Average discharge. 11 years, 138 cfs.

Extremes.--Maximum discharge during year, 1,020 cfs May 29, June 19 (gage height, 4,06 ft); 

minimum daily, 7.0 cfs Feb. 1.

1940-51: Maximum discharge observed, 1,240 cfs May 13, 1941; maximum gage height, 

4.13 ft May 22, 1948; minimum daily discharge, 3.9 cfs Nov. 26, 1942.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Diversions for irrigation of about 1,600 acres above station.

Rating table, w.iter year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.2 5.0

1.3 LO

1.5 25

1.6 

1.9 

2.5

37

95

255

3.0 

3.5 

4.1

425

655

1,050

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

"5T 25

19

18

*17

16

16

16

16

15

15

15

14

14

16

14

14

14

13

12

11

12

12

11

11

10

10 

 575 9.5

9.5

448.5

14.5

890

Nov.

10

*11

9.5

i5

10

11

11

11

11

b9.5

10

11

11

11

11

11

11

12

12

12

12

12

12

11

11

11

11

11 

11

11

-

329.0

11.0

653

Dec.

12

TT

10

12

*11

10

TT

12

12

12

12

12

12

12

12

11

11

11

11

11

11

11

10

10

11

11

11

10

11

11

12

347

11.2

688

Jan.

12

T?

*12

11

11

10

9.5

9.0

10

11

11

10

11

10

11

11

10

10

9.5

9.0

9.0

9.5

9.5

S.5

S.5

£.5

S',5

10 

10

*£l.5

JL£

31/1.5

10.1

(520

Feb.

7.0

775

8.0

9.0

10

10

9.5

8.5

8.5

8.5

8.5

9.0

8.5

7.5

7.5

8.0

8.5

8.5

8.5

8.0

8.0

8.5

8.5

8.5

8.0

8.0

8.5

8.5

_

-

235.5

8.41

467

Mar.

 §75 8.0

8.0

8.0

8.5

*9.0

9.5

10

10

10

10

10

11

11

12

12

12

12

12

13

14

15

15

17

18

21

23

*24 

23

25 "55

424.5

13.7

842

Apr.

26

Tf

*30

b31

b32

b31

b30

30

30

31

28

28

28

29

31

32

42

47

52

62

75

80

82

93

100

113

106

137 

152

T25

1,740

58.0

3,450

May

*113

97

W

111

155

219

279

318

336

378

437

461

425

350

309

312

371

474

555

660

620

524

546

575

620

752

889

1.000 

966

861

*812

14,622

472

29,000

June

805

590

429

350

322

350

409

496

532

550

478

465

*542

620

728

812

882

952

952

896

812

805

728

655

610

625

575

560 

532

496

-

18,558

619

36,810

July

461 5T7

429

409

374

326

329

315

288

*264

237

237

225

213

208

202

188

196

185

185

179

147

132

118

106

102

104

109 

93

86

M

6,948

224

13,780

Aug.

84

86

-5s 111

106

82

71

*60

49

44

39

36

33

30

29

27

26

26

25

29

31

30

26

32

30

24

22

27

65

40

1,429

46.1

2,830

Sept.

31 25

23

21

20

*19

18

16

16

15

15

19

16

15

14

13

14

13

14

14

19

18

15

14

13

12

11

T? 

24

22

-

512

17.1

1,020

Calendar year 1950: Max 833 Min 8.0 Mean 121 Ac-ft 87,660

Water year 1950-51: Max 1,000 Min 7.0 Mean 126 Ac-ft 91,050

Peak discharge (base. 950 cfs). May 29 (2 a.m.) 1,020 cfs (4.06 ft); June 19 (2:30 a.m.) 1,020 cf 

(4.05 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

ord

u otage-aiscnarge relation aneouea oy ice.

Note. No gage-height record Nov. 10 to Apr. 3, Apr. 8-15 (stage-discharge relation affected by ice 

>st of period); discharge estimated on basis of 6 discharge measurements, weather records, and rec- 

 ds for stations on nearby strearis.
96 GOTNISON RIVER BASIN

Cement Creek near Crested Butte, Colo.

Location. Lat 38°50'00 

near Pioneer Resort 

Butte.

0". long. 106°49'30", in sec. 13, T. 14 S., R. 85 W., on right bank 

, lv miles upstream from Ward Gulch,and 9 miles southeast of Crested

Drainage area.--27.7 sq mi.

Records available.--October 1910 to November 1913, October 1940 to September 1951 (discontinned).

Gage.--Water-stage recorder. Altitude of gage is 9,050 ft (from topographic map). Nov. 23, 

1910, to Nov. 30, 1913, staff gage at site 2 miles downstream at different datum. Apr. 

17, 1940, to Oct. 18, 1941, staff gage at site half a mile downstream at different 

datum.

Average discharge. 14 years (1910-13, 1940-51), 36.5 cfs.

Extremes. Maximum discharge during year, 265 cfs June 18 (gage height, 2.90 ft); minimum 

daily, 7.0 cfs Feb. 1.

1910-13, 1940-51: Maximum discharge, 358 cfs June 2, 1948 (gage height, 3.47 ft), 

from rating curve extended above 255 cfs by logarithmic plotting; minimum dally, 4.5 cfs 

Mar. 13, 14, 1950.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about SO acres above station.

Rating tables, water year 19JO-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to June 1 June 2 to Sept, 30

1.1 

1.3 

1.6 30

2.0 

2.5 

3.0

150

270

1.4 

1.7 

2.0

169

240

72

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

TS

15

15

15

*15

15

15

14

14

14

14

14

14

14

15

14

14

14

14

13

13

13

13

13

13

12

T3

13

13

13

433

14.0

859

Nov.

12

*13

bT3

b!3

b!3

b!3

bl3

13

12

9.0

9.5

10

10

10

10

9.5

10

10

10

11

11

11

10

10

10

10

10

10

10

10-

326.0

10.9

647

Dec.

10

T5

9.5

10

*9.5

8.5

975

10

10

10

10

10

10

10

10

10

9.5

9.5

9.5

10

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

9.5

10

10

301.0

9.71

597

Jan.

10

T5

*10

10

10

9.0

8.5

8.0

¥75

9.0

9.0

9.0

8.5

8.5

9.0

9.0

9.0

9.0

9.0

8.5

8.5

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

*9.0

8.5

279.5

9.02

554

Feb.

7.0

775

8.5

9.5

9.5

"9.5 10

8.5

8.5

8.5

8.5

8.5

8.0

7.5

7.5

7.5

7.5

8.0

8.0

7.5

7.5

8.0

8.0

7.5

7.5

7.5

8.0

8.0

_

-

227.5

8.12

451

Mar.

7.5

77S

7.5

8.0

8.0

*8.0

8.0

8.0

8.0

8.5

8.5

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.0

8.5

8.5

8.5

8.5

9.0

9.5

975

9.5

b9.0

9.4

9.4

258.8

8.35

513

Apr.

10

T5

*blO

11

11

11

10

11

11

11

blO

bll

bll

12

13

14

14

14

15

15

16

15

16

17

17

18

18

21

2T

b!8

-

412

13.7

817

May

*b!4

b!3

b!3

b!6

22

28

32

35

36

42

49

56

53

46

44

45

53

58

69

78

77

77

78

84

93

121

150

184

T77

170

*170

June

168

154

134

121

115

119

129

136

138

132

129

138

*149

162

178

192

213

220

 2TO 225

208

204

190

176

171

165

158

154

145

138

-

2,183! 4,869

70.4

4,330

162

9,660

July

^LTI5

111

107

100

93

88

83

77

*75

72

68

65

62

59

57

54

54

52

53

53

48

47

47

45

43

43

42

40

38

32.

2,059

66.4

4,080

Aug.

37

41

42

77

37

34

33

*31

31

30

30

29

28

27

26

26

26

26

26

27

27

27

27

26

26

24

24

24

24

26

_23

902

29.1

1,790

Sept.

23

7T

21

20

20

*20

20

19

19

19

19

21

19

19

19

18

19

18

18

18

20

19

18

18

11

17

17

17

20

18

-

571

19.0

1,130

Calendar year 1950: Max 150 Min 4.5 Mean 28.1 Ac-ft 20,330

Water year 1950-51: Max 225 Min 7.0 Mean 35.1 Ac-ft 25,430

Peak discharge (base, 160 efa). May 28 (10 p.m.) 225 cfs (2.82 ft); June 18 (10 p.m.) 265 cfs 

(2.90 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 10-13, Nov. 16 to Mar. 28 (stage-discharge relation affected by 

ice during most of period); discharge estimated on basis of 4 discharge measurements, weather records, 

and records for stations on nearby streams.
GUMISON RIVER BASIN

East River at Almont , Colo.

Location. La t 38 0 40', long. 106°51', in sec. 22, T. 51 N. , R. 1 E. , on left bank at

Almont , 200 ft upstream from bridge on State Highway 135,and 400 ft upstream from confluence with Taylor River. 

Drainage area. 295 sq mi, apprDximately . 

Kecoras available. --April to October 1905, July 1910 to April 1922, October 1934 to Septemoer iabi.

Gage. Water-stage recorder Datum of gage is 8,008.29 ft above mean sea level, datum of 

T929. Apr. 16 to Sept. 30, 1905, July 27, 1910, to Apr. 30, 1922, staff gage at bridge 

200 ft downstream at differeit datum.

Average discharge. 24 years (1910-13, 1916-20, 1934-51), 348 cf s . 

extremes . Maximum discharge during year, 2,520 cfs June 19 (gage he 

mum daily, 44 cfs Sept. 29.

1905, 1910-22, 1934-51: vjaximum discharge observed, 6,500 cfs June 15, 1921 (gage 

height, 6.6 ft, site and datjm then in use), from rating curve extended above 3,000 c 

minimum daily, 19 cfs Aug. 13, 1913.

Remarks Records good except t lose for periods of ice. effect or no gage-height record, 

are fair. Diversions for irrigation of about 7,400 acres above station.

of jage_height, in feet, and discharge, in cubic feet per

thogg pQbushg,} in water-Supply

. 

(gage height, 4.19 ft); miniDare

July 16

17

18

19

20

21

22

Month

Calendar year 1911

Gage height

2.1

2.1

2.1

2.1

2.0

2.0

2.0

Maximum

2,540

Discharge

670

670

670

670

585

585

585

Minimum

35

Mean

433

Runoff in 

acre-feet

313,600

Discharge, In cubic feeb per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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!08

a!20

al!2

allO

allO

*alOO

a98

a98

a98

a90

*90

90

90

87

82

85

82

77

77

74

70

70

67

67

64

64

62

62

62

6060"

2,586

83.4

5,130

Nov.

*62

60

62

62

62

62

62

62

60

56_

60

64

68

68

68

64

70

74

74

74

76

78

74

72

70

68

68

66.

66

68

-

2,000

66.7

3,970

Dec.

70

68

66

70

70

*60

66

70

72

70

70

70

70

70

70

70

68

66

68

70

68

64

60

62

64

64

62

62

68

68

68

2,084

67.2

4,130

Jan.

66

£14 *e;4

£16

66

£.4

54

Is- 50

{.4

£.4

£4

f.O

E,0

JJL

£16

64

64

KG

60

S.6

64

£14

£-2

f,2

f,0

£12

£14

06

c,Q

*:>s

1,9?8

62.2

3, 82'0

Feb.

46

50

58

64

68

7062-

58

58

58

60

62

60

62

62

64

66

68

68

68

67

68

64

62

62

60

56

56

_

_

-

1,727

61.7

3,430

Mar.

5256-

54

52

56

57

*57

60

60

62

60

57

64

60

60

64

57

56

56

62

62

67

64

62

67

70

77

80

72

77

80

1,940

62.6

3,850

Apr.

80

ST

*92

103

105

100

98

103

92

96

85

92

92

111

141

162

184

190

207

228

256

270

280

298

298

344

312

372

430

372

5,675

189

11,260

Calendar year 1950: Max 1,660 Mln 52 Mean 299

May

*316

277

263

29T

354

466

546

650

665

740

830

918

845

720

635

635

700

840

936

1,100

1,070

918

948

972

1,000

1,220

1,580

2,140

*2,130

1,720

1,590

28,015

904

55,570

June

1,650

1,340

1,070

860

750

745

830

978

1,060

1,110

1,010

966

*1,120

1,260

1,420

1,630

2,000

2,270

2,560

2,210

2,000

2,010

1,750

1,630

1,530

1,580

1,490

1,440

1,390

1,310

-

42,769

1,426

84,830

July

1,220

1,070

1,070

1,070

1,020

870

865

830

770

*720

645

605

575

554

538

522

478

482

478

478

522

454

414

596

556

312

316

322

305

294

288

18,819

607

37,350

Aug.

294

319

640

454

494

470

*422

578

347

316

288

266

246

218

200

197

200

218

228

218

221

224

210

197

200

178

162

162

165

204

184

8,500

274

16,860

Sept.

162

150

141

132

126

*127

110

87

60

58

62

64

66

66

64

62

62

64

62

62

62

62

62

60

60

60

58

53

44

46

-

2,354

78.5

4,670

Ac-ft 216,300

Water .teryear laau-bi: 1950-51: Max m2,360 £,it>uMln Ki44 Mean 324 Ac-ft 234,800 234,800

Peak discharge (base, 1,600 cfs).--May. 29 (6 a.m.) 2,380 cfs (4.18 ft); June 19 (7 a.m.) 2,520 cfs 

(4.19 .1ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measuremet, weather records, 

and records for nearby stations.

Note.--Stage-discharge relation Effected by Ice Nov. 4 to Feb. 20, Feb. 22, Feb. 27 to Mar. 5, Mar 

18, 19, Apr. 10.
GUNNISON RIVKR BASIN

Gunnison River near Gunnison, Colo.

Location. Lat 38°33', long. 106°57', in SWij sec..35 T. 50 N., R. 1 W., on right bank a 

quarter of a mile downstream from Antelope Creek and 1 mile west of Gunnison.

Drainage area.--1,010 sq mi, approximately.

Records available. October 1910 to November 1914, October 1915 to December 1928, October 

1944 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,670 ft (from river-profile map). November 1910 to November 1914, October 1915 to December 1928, water-stage recorder, 

staff or chain gages at bridge about a mile downstream at various datums.

Average discharge.--24 years, 839 cfs.

Extremes. Maximum discharge during year, 3,320 cfs May 29 (gage height, 4.91 ft); minimum 

observed, 110 cfs Feb. 1 (discharge measurement).

1910-14, 1915-28, 1944-51: Maximum discharge observed, 11,400 cfs June 13, 1918 

(gage height, 4.05 ft, site and datum then in use), from rating curve extended above 

5,000 cfs; minimum observed, that of Feb. 1, 1951, but may have been less during period 

of no gage-height record.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow partly regulated by Taylor Park Reservoir (see p.91 ), 37 miles 

above station. Diversions for irrigation of about 22,000 acres above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 27-30)

Oct. 31 to Sept. 30

1.3 

1.7

180

300

1.2 124

1.5 205

2.0 405

2.5 690

3.0 1,050

4.0 1,970

5.0 3,470

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

282

"555" 296

256

*262

272 

247

229

226

229

226

223

217

211

214

223

211

205

205

202

198

198

195

190

195

192

195

192

188

185

*T55

6,842

221

13,570

Nov.

185

188

183 

199

197

199 

202 '552

199

169

165

17o

180

194

191

169

170

170

190

185

180

185

175

170

170

175

170

165

174

177

-

5,448

182

10,810

Dee.

175

160

140 

155

145

*130 

W

175

180

170

170

170

160

170

175

170

160

155

160

165

160

155

150

155

155

160

155

155

165

165

165

4,985

161

9,890

Jan.

165

165

165 

170

*175

170 

150

14"5 130

165

160

160

155

155

165

160

160

160

160

155

150

160

160

160

155

155

160

165

170

160

155

4,940

159

9,800

Feb.

*110 130"

150 

165

170

175 

ISO

155

155

155

160

165

155

155

155

160

165

165

170

170

170

170

165

165

165

165

165

165

_

.

-

4,475

160

8,880

Mar.

165

TTO

170 

170

175

175 

*175

175

170

170

170

170

180

180

180

180

170

165

165

180

185

195

200

200

210

210

215

*220

214

223

238

5,765

186

11,430

Apr.

238

232

*252 

266

278

266 

256

274

246

330

460

580

570

612

612

494

425

385

410

606

494

522

534

570

504

588

504

570

'550 678

-

13,356

445

26,490

May

499

*450

415 

*55

540

755 

890

1,080

1,040

1,060

1,190

1,300

1,230

1,050

883

862

898

1,050

1,180

1,500

1,520

1,350

1,380

1,430

1,460

1,730

2,210

2,960

*2,990

2,470

2,270

40,092

1,293

79,520

June

2,290

1,950

1,640 

1,340

1,150

1.090 

1,1 40

1,270

1,400

1,500

1,480

1,350

1,470

*1,660

1,870

2,080

2,500

2,800

2.980

2,820

2,620

2,760

2,340

2,360

2,440

2,500

2,440

2,360

2,280

2,160

-

60,040

2,001

119,100

July

2.050

1,870

1,810 

1,800

1,700

1,510 

1,450

1,370

1,280

1,190

1,100

*994

970

938

890

848

814

834

834

848

946

855

794

807

742

672 "575

748

807

748

722

33,613

1,084

66,670

Aug.

722

794

1.240 

1,070

1,110

*1,030 

954

848

736

636

800

834

807

834

827

820

827

954

986

1,000

1,020

1,020

1,000

986

962

906

876

876

869

898

890

28,132

907

55,800

Sept.

869

848

834 

862

*855

883 

855

807

755

774

814

862

862

'555 898

855

855

855

855

834

827

834

807

722

690

684 "S8T

703

696

696

-

24,258

809

48,120

Calendar year 1950: Max 2,370 Hin 130 Mean 633 Ac-ft 458,400

Water year 1950-51: Max 2,990 Min 110 Mean 635 Ac-ft 460,100

Peak discharge (base, 3.400 efs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by lee Nov. 11-13, 17-28, Dee. 1, 2, 4, 5, Apr. 10-13. 

No gage-height record Dee. 6 to Mar. 28 (stage-discharge relation affected by lee during most of 

period); discharge estimated on basis of 5 discharge measurements, weather records, and records for 

nearby stations.
GUNNISON RIVER BASIN 99

Tomichi Creek at Sargents, Colo.

Location. Lat 38°24", long. 106°25', In SW£ sec. 21, T. 48 N., R. 5 E., on right bank half 

a mile downstream from Marshall Creek and three-quarters of a mile south of Sargents.

Drainage area.--155 sq ml.

Records available.--May 1917 to September 1922, April 1938 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,420 ft (from railroad elevation). May 

12, 1917, to Sept. 30, 1922, water-stage recorder or staff gage at railroad bridge 1,000 

ft upstream at different datum.

Average discharge.--18 years, 65.2 cfs.

Extremes. Maximum discharge during year, 440 cfs May 29 (gage height, 2.56 ft); maximum 

gage height recorded, 2.81 ft Mar. 28 (ice jam); minimum daily discharge, 10 cfs Feb. 1.

1917-22, 1938-51: Maximum discharge, 792 cfs June 9, 1921 (gage height, 4.05 ft, 

site and datum then in use), from rating curve extended above 600 cfs; minimum recorded, 

6 cfs Nov. 16, 1920.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about 1,900 acres above station. Larkspur 

ditch diverts water above station to Arkansas River basin (see p.340).

Revisions.--W 859: Drainage area.

Rating table, water year 195O-51, except periods of ice effect

(gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method used May 28 to June l)

0.5 

.6 

1.0 

2.0 

2.3

12

27

112

350

425

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

17

18

20

*19

18

16

15

15

15

15

16

16

15

20

20

24 "22

22

21

21

20

20

20

20

21

21

21

21

21

21

*21

592

19.1

1,170

Nov.

21

22

22

23

23

23

24

24

21

_16

20

24

25

25

23

21

23

25

25

.29

28

29

28

26

25

25

24

24

24

25

-

717

23.9

1,420

Dec.

26

22

21

23

22

*20

25

28

27

24

24

26

20

27

28

26

23

20

26

50

28

24

20

24

22

22

18

23

28

26

28

751

24.2

1,490

Jan.

26

21

24

26

*28

19

16

14

16

21

27

25

23

22

23

26

24

26

26

20

18

19

20

22

20

18

18

20

19

*16

15

658

21.2

1,310

Feb.

10

15

23

27

31

33

25

24

23

26

31

35

31

21

21

21

23

25

27

29

27

33

41

45

35

30

26

28

_

-

-

766

27.4

1,520

Mar.

 si 24

28

26

*32

38

37

38

39

44

44

40

40

42

43

44

40

34

36

37

35

35

35

36

37

38

40

33

28

Apr.

26

*25

30

40

50

55

60

55

35

30

25

22

24

30

51

51

49

49

58

66

90

103

101

101

99

103

94

101

108

28 ~~§0

29

1,111

35.8

2,200

-

1,821

60.7

3,610

May

77

72

*66

70

92

121

125

136

132

134

145

156

156

141

136

145

154

163

176

208

228

212

202

210

228

305

355

*402

412

350

362

5,901

190

11,700

June

348

325

275

242

220

210

210

210

205

198

193

*178

167

169

180

189

193

200

198

196

182

169

156

145

134

119

101

94

90

86

-

5,582

186

11,070

July

81

75

64

62

60

51

45

39

37

35

*39

39

37

35

35

37

35

35

39

37

43

37

37

39

35

31

31

35

31

31

_29

1,296

41.8

2,570

Aug.

27

60

75

72

68

45

*39

35

33

29

29

26

24

24

22

22

-n21

21

22

27

29

27

29

29

24

24

24

24

24

24

1,000

32.3

1,980

Sept.

22

21

21

21

*20

20

20

18

18

16

16

20

20

18

16

16

16

16

15

15

16

16

15

14

I2.

12

14

15

16

16

-

511

17.0

1,010

Calendar year 1950: Max 155 Min 10 Mean 38.2 Ac-ft 27,680

Water year 1950-51: Max 412 Win 10 Mean 56.7 Ac-ft 41,050

Peak discharge (base, 200 efs). May 21 (8:30 p.m.) 242 cfs (1.65 ft); May 29 (6 a.m.) 440 cfs 

(2.56 ft); June 19 (4 a.ra.J 218 cfs (1.45 ft). 

* Discharge measurement m_ade on this day.
100 GUNNISON RIVER BASIN

Tomlchl Creek at Parlin, Colo.

Location. Lat 38°29'55", long. 106°43'35", in NW^ sec. 23, T. 49 N., R. 2 E., on right

 oanK at Parlin and a quarter of a mile upstream from Quartz Creek.

Drainage area. 586 sq mi.

Records available.--October 1944 to September 1951 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 7,920 ft (from topographic map).

Average discharge. 7 years, 61.7 cfs.

Extremes. Maximum discharge during year, 454 cfs May 30 (gage height, 5.67 ft); minimum

 daily, 2.6 cfs Oct. 1.

1944-51: Maximum discharge, 669 cfs May 25, 1948 (gage height, 6.37 ft), from 

rating curve extended above 400 cfs; minimum daily, 0.5 cfs Sept. 10-12, 1950.

Remarks. Records good except those for periods of ice effect, which are poor. Diversions 

ror irrigation of about 11,000 acres above station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

2.9

3.1

3.2

1.2 

4.8 

7.2

3.5 

3.7 

4.0

4.5 

5.0 

5.6

146

258

430

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

37T

3.8

*3.7

3.3

3.1

3.7

4.4

3.8

3.8

4.4

4.6

5.0

5.3

5.8

6.7

8.3

8.3

8.3

8.3

8.3

8.7

10

9.9

9.9

9.9

9.9

9.5

9.5

10

*_!!_

206.9

6.67

410

Nov.

11

11

11

11

11

12

15

13

11

8.5

11

12

13

20

25

22

30

32

32

36

35

36

32

34

33

32

33

31

31

33

-

677.5

22.6

1,340

Dec.

32

24

23

26

24

*22

25

36

36

32

32

34

28

34

35

33

30

26

32

36

34

30

26

30

28

28

24

30

34

32

34

933

30.1

1,850

Jan.

32

27

30

32

*54

22

18

17

T8

26

32

30

28

27

28

31

29

31

31

25

23

24

25

27

25

23

23

25

24

*21

20

808

26.1

1,600

Feb.

1119"

27

31

35

37

29

28

27

30

35

39

35

25

25

25

27

29

31

33

31

37

45

50

40

34

30

32

_

_

-

877

31.3

1,740

Mar.

28

36

32

30

*35

42

40

41

44

51

49

51

52

52

49

48

46

45

46

48

49

48

48

51

53

58

63

60

56

56

58

1,465

47.3

2,910

Apr.

60 *7s

95

115

130

135

140

130

105

85

67

62

70

97

121

118

118

118

118

130

142

164

160

156

150

164

168

146

137

125

-

3,601

120

7,140

May

89

74

*65

70

79

95

113

116

125

120

123

133

146

162

152

133

142

158

154

170

215

242

230

206

204

206

245

*294

343

421

430

5,455

176

10,820

June

400

337

367

313

268

227

206

186

170

174

186

*164

148

132

130

128

130

133

132

135

137

125

105

94

90

82

66

57

40

34

-

4,956

165

9,830

July

"2T 29

16

11

13

13

13

12

11

9.5

*9.9

11

12

11

11

11

"877 8.3

11

12

14

16

17

20

23

20

20

19

22

19

24

471.4

15.2

935

Aug.

26

26

34

56

76

79 *5I

51

43

25

20

20

17

17

16

15

15

14

12

11

8.0

 §71 7.2

12

14

14

14

13

14

14

12

765.3

24.7

1,520

Sept.

12

13

T.5

9.1

*9.1

9.1

8.3

9.5

9.1

8.7

8.0

7.2

7.0

7.0

7.0

8.0

8.7

8.0

7.6

7.2

7.2

7.0

7.2

7.6

6.7

6.7

7.2

7.2

8.0

11

-

248.9

8.30

494

Calendar year 1950: Max 319 Min O.5 Mean 36.0 Ac-ft 26,110

Water year 1950-51: Max 430 Mln 2.6 Mean 56.1 Ac-ft 40,590

Peak discharge (base, 250 efs). May 30 (11:30 p.m.) 454 cfs (5.67 ft). 

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10-12, 16-18, 21-23, Dec. 3, Dec. 5 to Mar. 9, 

Mar. 17-21, Mar. 28 to Apr. 10.
101

Location.--Lat 38°32', long. 106°56', in SWij sec. 11, T. 49 N. , R. 1 W., on right bank 

300 ft downstream from highway bridge, 1 mile south of Gannison, and 2 miles upstream 

from mouth (revised).

Extremes.--Maximum discharge during year, 635 cfs May 31 (gage height, 2.83 ft); minimum 

 daily, 19 cfs Oct. 1.

1938-51: Maximum discharge, 1,530 cfs Mar. 24, 1939, from rating curve extended

above 1,200 cfs; maximum gage height, 3.97 ft May 28, 1942; minimum daily discharge,

13 efs Sept. 30, 1950.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Iota]

Mean

Ac- ft

Oct.

19

20

20

21

22

22

*23

23

24

24

32

37

36

38

39

43

48

48

52

53

53

53

55

E5

57

57

55

53

53

55

*53

1,243

40.1

2,470

Nov.

55

57

57

58

66

71

80

60

74

-52.

58

63

63

60

65

58

64

62

64

68

66

68

62

58

58

Dec.

60

56

50

*63

56

47

56

66

66

62

62

64

58

64

65

62

58

56

62

66

64

60

56

60

58

58 1 58

57

56

55

58

-

1,871

62.4

3,710

52

58

62

60

62

1,849

59.6

3,670

Jan.

60

55

58

60

*6J!

50

46

45

46

54

60

58

56

55

56

58

56

56

58

52

50

51

52

54

52

50

50

52

*53

45

40_

1,653

53.3

3, 280

Feb.

36

44

52

56

60

62

54

53

52

55

60

64

60

50

50

50

52

54

56

58

56

62

Mar.

58

66

62

60

66

72

*70

76

84

92

92

90

90

88

90

92

90

88

96

105

105

105

701 105

75

70

64

60

62

_

-

-

1,597

57.0

3,170

120

140

160

*170

151

148

148

Apr.

142

*161

187

222

226

218

226

229

187

180

121

109

133

161

204

218

215

208

215

226

246

268

274

271

260

260

271

257

250

240

142 j

3,121 6,385

101

6,190

213

12,660

May

198

164

*145

142

161

180

215

218

229

229

236

246

264

278

274

260

260

285

292

302

356

372

372

340

332

332

388

*484

575

June

595

575

530

472

436

400

364

348

352

352

368

*364

340

320

332

336

352

372

392

404

392

368

348

316

296

264

243

218

190

595 1 170

615

9,339

-

10,809

301 360

18,520 21,44C

July

164

151

139

121

88

71

66

66

68

68

*66

58

57

57

57

55

48

55

52

57

77

112

109

94

77

71

80

74

71

91

127

2,547

82.2

5,050

Aug.

130

167

236

264

292

258

240

201

*161

148

124

115

100

88

82

74

63

66

63

66

77

88

85

80

85

77

71

66

68

71

68

3,784

122

7,510

Sept.

60

57

52

48

*45

35

22

22

24

23

23

23

23

24

24

23

25

25

25

25

26

27

27

26

28

28

28

28

28

29

-

903

30.1

1,790

Calendar year 1950; Max 530 Mln 18 Mean 103 Ac-ft 74,320

Water year 1950-51; Max 615 Min 19 Mean 124 Ac-ft 89,460

Peak discharge (base. 520 cfs).--May 31 (l p.m.) 635 cfs (2.83 ft); June 2C (l p.m.) 412 cfs (2.33

* Discharge measurenent made on this day.

Mote.--Stage-discharge relation affeoted by ice Nov. 14 to Dec. 3, Dec. 5-22, Apr. 10. No gageheight record Dec. 23 to Mar. 27 (stage-discharge relation affected by ice during most of period); 

discharge estimated on basis of 4 discharge measurements, weather records, and records for nearby 

stations.

256684 O - 53 -
102 GUMISON RIVER BASIN

Gunnison River at lola, Colo.

Location.--Lat 38°28'50", long. 107°05'30", in NWij sec. 28, T. 49 N., R. 2 W., on right 

bankTl,000 ft upstream from bridge on State Highway 149 and 3,000 ft northeast of lola.

Drainage area.--2,490 sq mi, approximately.

Records available. October 1899 to December 1903, October 1937 to September 1951 (discontinued).

Gage.--Water-stage recorder. Datum of gage is 7,434.63 ft above mean sea level, datum of 

1929. Apr. 1, 1900, to Dec. 23, 1903, staff gage on pier of highway bridge 1,000 ft 

downstream at different datum.

Average discharge.--18 years, cfs

Extremes.--Maximum discharge during year, 4,170 cfs May 29 (gage height, 3.55 ft); maximum 

gage height recorded, 4.79 ft Dec. 21 (ice jam); minimum daily discharge, 180 cfs Feb. 1. 

1899-1903, 1937-51: Maximum discharge, 7,140 cfs May 22, 1948 (gage height, 5.11 ft), 

and June 19, 1949 (gage height, 4.89 ft); maximum gage height recorded, 5.55 ft Dec. 22, 

1949 (ice jam); minimum daily disiharge, 130 cfs Feb. 19, 1939.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow partly regulated by Taylor Park Reservoir (see p. 91 ). Diversions 

for irrigation of about 51,000 acres above station.

Revisions.--Revised figures of discharge for the water year 1900, superseding those publishecT in Twenty-second Annual Report, Part 4, are given herein.

Rating table, water year 195O-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.8 

1.0 

1.2 

1.5

240 

355 

490 

76O

2.0 

3.0 

3.5

1,330

3,000

4,060

Discharge, in cubic feet per second, 1899-190O, 195O-51 

1899-1900

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.

325

10,075

325

19,980

Nov.

310

-

9,300

310

18,450

Dec.

300

9,300

300

18,450

Jan.

280

8,680

280

17,220

Feb.

280

_

_

-

7,840

280

15,550

Mar.

370

11,470

370

22,750

Apr.

574 

S64

574

664

664

574

574

664

574

574

496

496

496

496

574

574

574

574

574

664

874

1,250

992

874

874

764

764

992

1,120

1,250

-

21,372

712

42,390

May

1,120

1J250

1,540

1,840

1,980

2,140

2,600

2,750

3,690

3,690

4,OOO

3,840

3,690

3,370

3,690

4,000

4,150

4,000

4,000

3,690

3,690

3,840

4,310

4,310

4,470

4,930

5,250

5,400

5,560

5,560

109 , 600

3,535

217,400

 

June

5,400 

4,780

4,930

4,620

4,470

4,47O

4,620

4,620

4,310

4,000

3,690

3,690

3,530

3,370

2,750

2,750

3,060

2,910

2,750

2,60O

2,600

2,750

2,750

2,750

2,600

2,290

1,980

1,840

1,690

1,540

-

100,110

3,337

198,600

July

1,590 

1,390

1,250

1,120

1,120

992

992

874

874

764

764

764

764

664

664

664

574

574

496

496

426

360 '365

360

360

360

360

426

426

360

360

21,348

689

42,340

Aug.

360 

360

360

360

360

380

36O

360

126" 426

426

360

360

360

360

360

360

360

360

36O

360

360

360

360

360

360

360

360

360

360

360

11,358

366

22,530

Sept.

360 

355

360

"355 300

300

3OO

3OO

300

300

300

300

300

300

300

300

300

3OO

300

300

300

300

300

300

300

300

300

300

3OO

300

-

9,180

3O6

18,210

Calendar year 1899: Max - Mln - Mean - Ac-ft -

Water year 1899-1900: Max 5,560 Mln - Mean 9O3 AO-ft 653,900
GUNNISON RIVER BASIN 103

Discharge, in cubic feet per second, of Gunnison River at lola, Colo., 1899-1900, 1950-51 Continued

1950-51

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

325

331

331 

313

*307

319

307

295

295

295

295

295

295

295

295

319

313

307

307

307

301

301

301

295

301

301

301

295

295

*295

2J>0

9,422

304

18,690

Nov.

284

284

284 

290

301

301

307

307

307

260

260

270

300

310

300

270

270

270

280

280

280

290

270

270

270

270

270

260

270

270

-

8,455

282

16,770

Dec.

270

260

230 

*250

240

220

260

"250 280

270

270

270

260

280

280

270

260

240

250

260

250

240

230

240

240

240

230

240

260

250

250

7,870

254

15,610

Jan.

250

250

250

*260

2JO

250

230

200

72o

250

250

250

240

240

250

250

250

250

250

240

230

240

240

240

240

230

240

240

250

240

220

7,510

242

14,900

Feb.

180

210

230 

250

260

270

240

240

240

240

250

260

240

230

230

240

250

250

250

260

260

260

270

"275 280

260

260

260

-

-

6,940

248

13,770

Mar.

250

270

270 

260

260

290

290

290

300

300

300

300

310

310

310

310

300

290

300

330

340

350

360

370

400

420

"420" 430

410

420

430

10,190

329

20,210

Apr.

462

*441

476 

530

538

522

514

522

476

554

597

710

740

740

790

710

642

606

624

780

740

770

790

830

750

820

770

800

893

830

-

19,967

666

39,600

May

710

*615

570 

579

660

882

1,060

1,240

1,190

1,200

1,320

1,480

1,460

1,290

1,120

1,070

1,090

1,250

1,400

1,800

1,940

1,810

1,810

1,840

1,890

2,190

2,780

3,660

*5,930

3,400

3,160

50,396

1,626

99,960

June

3,200

2,860

2,460 

2,020

1,730

1,560

1,590

1,750

1,890

1,990

*2,040

1,880

1,990

2,170

2,480

2,710

3,140

3,530

3.750

3,620

3,340

3,400

3,000

2,910

2,950

2,980

2,890

2,800

2,680

2,530

-

77,840

2,595

154,400

July

2,570

2,190

2,070 

2,020

1,910

1,700

1,620

1,500

1,410

1,290

1,210

*1,090

1,040

1,000

992

959

926

959

959

970

1,080

1,040

959

959

904

810

810

860

926

915

904

38,352

1,237

76,070

Aug.

904

981

1.590 

1,430

1,440

1,360

1,200

1,080

*915

790

893

948

915

904

915

904

893

1,000

1,060

1,080

1,120

1,120

1,100

1,070

1,060

992

959

937

915

926

937

32,338

1,043

64,140

Sept.

915

882

882 

*882

893

915

882

840

780

790

820

871

882

915

915

871

871

871

882

860

860

871

871

800

740

720

720

740

750

760

-

25,251

842

50,080

Calendar year 1950 : Max 2,800 Mln 220 Mean 791 Ac-ft 572,900

Water year 1950-51 : Max 3,930 Min 180 Mean 807 Ac-ft 584,200

Peak discharge (base, 5,400 cfs).--May 29 (10 a.m.) 4,170 cfs (3.55 ft); June 19 (11 a.m.) 3,950 

cfs (3.4,5 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10 to Mar. 31 (no gage-height record Dec. 23 

to Mar. 26; discharge estimated on basis of 1 discharge measurement, weather records, and records

for for* npar>bv nearby st:a-h-1 stations). i-ivio ^
aUNNISON RIVER BASIN

Legation.--Lat 37°59'00", long. 107°10'00", in sec. 14, T. 43 N., R. 3 in. , on left ba

downstream from Tumble Creek, 3i miles upstream from Brush Creek, and 9 mile

(revised) southeast of Lake City.

area. 25.5 so mi.

Records available.--July 1946 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 10,200 ft (from topographic map).

Average discharge.--5 years, 15.7 cfs.

Extremes.--Maximum discharge recorded during year, 130 cfs May 30 (gage height, 2.44 ft); 

minimum not determined, occurred during period of no gage-height record.

1946-51: Maximum discharge, 218 cfs June 12, 1949 (gage height, 2.99 ft); minimum 

not determined, occurred during period of no gage-height record.

Rating tables, water year 1950-51, except period of lee effect

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 29 May 30 to Sept. 30

1.2

1.3

1.4

3.9 

5.5 

9.3

1.3

1.4

1.5

4.0

7.5

13

1.7 

2.1

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

8.5

7.0

6.6

6.3

5.9

*5.5

5.5

5.5

5.5

5.5

5.5

5.3

5TS

5.5

5.5

6.3

5.9

5.9

5.9

5.9

5.9

5.9

6.3

6.3

6.3

6.3

5.9

5.9

5.9

6.3

5.9

185.7

5.99

368

Nov.

*b5.6

b5.6

b5.4

b5.2

4.7

> 5.4

-

161.5

5.38

320

Dec.

5.0

155.0

5.0

307

Jan.

4.5

139.5

4.5

277

Feb.

5.0

_

-

-

140.0

5.0

278

Mar.

5.5

170.5

5.5

338

Apr.

8.0

-

240.0

8.0

476

May

10

9.5

9.0

¥70

11

18

20

21

21

20

21

25

26

24

22

21

20

22

24

34

38

36

34

33

36

45

65

95

80

*70

43

962.5

31.0

1,910

June

*31 26

26

25

24

23

22

22

20

20

19

18

18

17

17

17

17

17

16

16

15

14

14

13

12

12

11

11

11

10

-

534

17.8

1,060

July

11

10

10

9.7

9.7

9.7

9.2

8.6

8.6

8.0

8.0

*7.5

870

7.5

7.5

8.0

8.6

8.6

8.0

11

10

8.6

8.0

9.2

8.0

7.5

9.7

11

9.7

8.0

8.0

274.9

8.87

545

Aug.

11

9.7

11

12

8.6

*8.6

8.0

6.8

6.8

6.8

6.8

6.4

6.1

6.1

5.4

5.4

5.3

6.4

7.2

8.0

7.5

6.8

6.4

7.2

6.1

5.4

5.8

5.8

6.4

6.4

5.0

221.7

7.15

440

Sept.

4.4

4.4

4.4

4.4

4.4

*4.4

4.4

4.7

4.4

4.0

4.0

4.4

4.7

4.4

4.4

4.4

4.7

4.7

4.7

4.7

6.4

5.8

5.4

5.4

5.0

5.0

5.0

5.8

7.5

6.4

-

146.7

4.89

291

Calendar year 1950: Max 52 Mln - Mean 10.5 Ae-ft 7,570

Water year 1950-51: Max 95 Mln - Mean 9.13 Ac-ft 6,610

Peak discharge (base, 180 efs).--May 27 or 28 (time and discharge unknown).

* Discharge measurement made on this day.

b Stage-discharge relation affected by lee.

Note.--Ho gage-height record Nov. 6 to May 30 (stage-discharge relation affected by lee during most 

of period); discharge estimated on basis of 1 discharge measurement, weather records, and records for 

nearby stations.
GUNNISON RIVER BASIN 105

Cebolla Creek at Powderhorn, Colo.

Location. Lat 38°17'30", long. 107°07'00", in SE^ sec. 29, T. 47 N., R. 2 tf., on left bank 

2UU i't downstream from bridge on State Highway 149, 250 ft downstream from Powderhorn 

Creek, and half a mile north of Powderhorn.

Drainage area.--334 sq mi.

Records available.--April 1938 to September 1951.

Sage.--Water-stage recorder. Altitude of gage is 8,000 ft (from topographic map).

Average discharge.--11 years (1939-43, 1944-51), 106 cfs.

Extremes.--Maximum discharge during year, 465 cfs May 28 (gage height, 2.70 ft); minimum 

daily, 20 cfs Nov. 11.

1938-51: Maximum discharge, £,150 cfs May 16, 1944, from rating curve extended above 

710 cfs; maximum gage height, 3.40 ft June 17, 1949; minimum daily discharge, that of 

Nov. 11, 1950.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

whicn are poor. Diversions for irrigation of about 2,400 acres above station. Tabor 

ditch diverts water to Rio Grande basin (see p. 340).

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 27)

Oct. 1 to May 27 May 28 to Sept. 30

35

58

100

175

270

1.4

1.5 

1.7 

2.0 

2.3 

2.5

15

25

59

135

245

345

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

40

45

42

40

*41

40

40

40

39

10

40

40

40

40

40

42

42

42

41

40

40

40

41

41

42

42

40

40

4O

40

40

1,260

40.6

2,500

Nov.

*40

41

38

b36

b35

b35

b35

b35

b36

b32

b20

b25

32

37

35

30

33

35

42

IT

41

41

40

39

40

42

40

40

40

40

-

1,096

36.5

2,170

Dec.

45

40

35

40

32

25

*31

45

42

38

40

42

40

41

41

38

35

37

38

39

37

36

36

38

38

36

32

30

37

35

38

1,157

37.3

2,290

Jan.

42

42

40

*48

11

45

35

35

37

36

38

40

40

39

37

39

40

40

40

38

36

37

39

37

36

36

37

39

39

38

*36

1,213

39.1

2,410

Feb.

30

35

40

41

40

39

39

39

40

45

50

54

45

4O

40

42

45

45

45

42

43

45

45

45

44

43

42

40

_

_

-

1,183

42.2

2,350

Mar.

35

40

36

40

42

*44

44

45

48

50

45

42

45

47

49

49

47

44

41

44

45

47

46

48

52

56

*53

50

47

45

44

1,410

45.5

2,800

Apr.

43

b42

b46

*50

50

47

50

50

48

50

44

50

51

55

60

60

62

65

67

71

81

86

93

~95 118

98

86

93

118

90

2,014

67.1

3,990

May

81

*76

71

81

100

143

132

147

128

118

110

104

100

88

76

67

62

57

58

72

104

114

107

98

88

159

270

328

30T

*272

272

3,984

129

7,900

June

209

T65

132

116

122

125

119

116

119

125

122

*109

109

103

98

98

109

113

103

103

96

94

87

82

76

63

61

55

46

M

3,114

104

6,180

July

46

44

42

44

42

42

42

34

30

26

28

*24

23

24

25

28

31

37

36

48

80

5T

50

67

51

44

59

61

67

61

51

1,338

43.2

2,650

Aug.

67

80

94

87

78

76

63

*61

57

61

59

55

53

55

55

53

53

53

51

63

76

76

70

67

67

57

53

57

57

59

51

1,964

63.4

3,900

Sept.

42

42

42

40

37

*34

22

23

26

31

30

30

30

24

25

31

32

34

34

36

40

42

38

37

36

36

36

36

40

50

-

1,036

34.5

2,050

Calendar year 1950 : Max 245 Mln 20 Mean 67.0 Ac-ft 48,490

Water year 1950-51 : Max 328 Min 20 Mean 56.9 Ac-ft 41,190

Peak discharge (base, 800 cfs). No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 13 to Mar. 27, Mar. 29 to Apr. 1 (stage-discharge relation affected by ice during most of period); discharge estimated on basis of 5 discharge measurements, weather 

records, and records for stations on nearby streams.
106 GUNNISON RIVER BASIN

Sapinero Creek at Sapinero, Colo.

Location.--Lat 38°28'30", long. 107°18iOO", In sec. 28, T. 49 N., R. 4 W., on right bank 

50 ft upstream from bridge on U. S. Highway 50, 500 ft upstream from mouth, and fiveeighths of a mile northeast of Sapinero.

Drainage area.--86 sq mi, approximately.

Records available.--October 1910 to September 1914, October 1945 to September 1951.

Gage. Water-stage recorder. Datum of gage is 7,226.84 ft above mean sea level, datum of 

1929. Mar. 17, 1911, to July 21, 1913, staff gage 50 ft downstream from bridge at datum 

5.5 ft higher; July 22, 1913, to Sept. 30, 1914, chain gage about 200 ft upstream, at 

different datum.

Average discharge. 10 years, 69.5 cfs.

Extremes.--Maximum discharge during year, 615 cfs Aug. 1 (gage height, 4.39 ft); minimum 

daily, 0.9 cfs Oct. 14, 15.

1910-14, 1945-51: Maximum discharge, 892 cfs May 22, 1948 (gage height, 4.49 ft), 

from rating curve extended above 300 cfs; minimum daily, 0.6 cfs Sept. 16, 1948.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about 300 acres above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 27 May 28 to Sept. 30

2.2

2.3

2.4

2.5

2.6

0.5 

1.0 

3.0 

6.5

11

2.8 26

3.0 51

3.2 87

3.5 168

4.2 445

2.0

2.1

2.3

2.4 

2.6

1.0

2.2

8.6

12

26

2.8

3.0

3.7

4.1

138

285

470

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.0

*4.8

5.8 578-

5.4

4.8

4.8

4.4

4.8

2.8

1.4

1.0

1.0

75" .9

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.4

1.4

1.4

1.6

1.6

*1.6

1.4

73.8

2.38

146

Nov.

1.4 T76-

1.6

1.8

2.2

2.4

3.0

3.4

3.7

2.0

3.0

4.0

5.0

6.5

6.2

4.2

6.0

6.0

14IS"

11

12

9.0

8.8

8.3

8.8

8.8

7.8

7.8

8.8

-

182.1

6.07

361

Dec.

9.0

6.5

6.0

*7.0

6.2

S70- 5.4

12

13

12

12

13

12

12

12

1413-

12

12

13

12

12

12

12

13

12

11

11

11

11

12

339.1

10.9

673

Jan.

12

TT

11

11

11

*10

10

9.0 10" 

11

11

11

10

10

11

11

10

10

10

10

9.0

10

10

9.5

9.0

9.0

9.0

9.5

*10

9.5

9.0

313.5

10.1

622

Feb.

7.0 H70-

9.0

9.0

10

11TO10

9.0

10

10

10

10

9.0

9.0

10

10

10

10

10

9.0

10

10

10

10

9.0

10

10

-

_

-

269.0

9.61

534

Mar.

9.0

ll

10

9.0

10

10

10

*10

10

11

12

13

14

15

16

15

14

16

18

21

20

19

25

30

34

3635"

33

*32

31

30

579.0

18.7

1,150

Apr.

28

*ZF

35

47

47

41

37

37

36

36

33

34

33

43

68

87

98

94

94

105

127

127

135

147

135

144

127

141

150

*T2T

2,418

80.6

4,800

May

101

87

81

5?

127

194

204

228

207

214

228

221

200

165

144

144

165

187

207

263

283

251

214

214

243

343

422

425

?OT

*334

316

6,906

223

13,700

June

290

221

165

138

130

130

141

165

171

185

*162

150

165

185

202

217

267

290

308

3oT

290

262

221

185

156

150

141

141

135

125

5,791

193

11,490

July

105 ~9T

78

70

66

59

53

47

*41

41

35

32

28

21

18

16

14

12

11

11

16

14

11

11

10

9.3

10

20

10

7.9 579-

982.1

31.7

1,950

Aug.

41

27

52

3?

25

*14

13

11

7.2 772"

9.3

12

12

11

11

11

11

10

10

14

14

17

12

12

12

12

12

12

12

12

12

479.7

15.5

951

Sept.

12

TT

10

*9.3

7.6

7.2

6.9

6.6

5.5

5.5

1.8

1.2

1.8

1.2

T7T

2.0

1.5

1.7

2.0

2.0

3.1

3.4

1.7

2.0

2.2

2.1

2.1

2.0

2.4

2.1

121.7

4.03

241

Calendar year 1950: Max 287 Mln 0.8 Mean 51.2 Ac-ft 37,060

Water year 1950-51 : Max 425 Mln 0.9 Mean 50.6 Ac-ft 36,620

Peak discharge (base, 500 cfs) . May 27 (10:30 p.m.) 494 cfs (4.23 ft); June 18 (12 p.m.) 330 cfs 

(3.80 ft); AugT 1 (7 p.m.) 615 cfs (4.39 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 11-13, 16-18, Nov. 23 to Mar. 30 (no gagehelght record Dec. 6 to Mar. 29; discharge estimated on basis of 4 discharge measurements, weather 

records, and records for stations on nearby streams).
GUNNISON RIVER BASE! 107

Lake Fork a I Gateview, Colo.

Drainage area.--333 sa mi (revises).

Records available.--April 193b to September 1951.

Gage.--Water-stage recorder. Daton of gage is 7.827.66 ft above mean sea level, datum ol

Prior to Oct. 1, 1938. at daturr. 2.00 ft higher, and Oct. 1, 1938, to Sept. 30,

1945, at datum 1.00 ft higher.

Extremes.--Maximum discharge during year, i,100

y, 30 cfs Nov. 11.

1338-51: Maximum discnai-ge, 2,620 cfs June 21, 1938 (gage height, u.OO ft, present

latutn), from rating curve extended atove 1,800 cfs; minimum daily, cfs Feb. IB, 1942.

Re:narko. --Record fchope for oeriod of efi'ec-T or no f?a. e-neigh t record,

Diversions for irrigation of aboat 1,700 acres above station.

Rating tables, water year 1350-51, except periods of Ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

Oct. 1 to May 27

1.5 

2.0

300

550

May 28 to Sept. 30

1.4 232

2.0 530

.8 88 2.5 880 i .0 110 3.0 1,160

] .0 150

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

62

64

64

65

*65

62

61

59

61

61

61

61

59

59

59

59

59

58

57

56

55

54

54

52

52

50

49

48

48

48

48

1,770

57.1

3,510

Nov.

*47

47

48

 !7

*7

47

48

48

48

42

30

40

50

55

50

40

50

55

60

55

51

51

49

49

52

54

52

49

49

43

-

1,453

48.4

2,880

D«.

50

48

42

55

45

35

*50

60

56

54

56

58

54

50

54

52

50

46

48

48

46

44

46

48

46

45

42

40

50

45

46

1,509

48.7

2,990

Jan.

50

46

48

*52

56

52

48

47

48

50

52

52

52

50

46

48

50

50

50

48

45

46

47

46

44

42

44

46

46

45

*43

1,489

48.0

2,950

Feb.

35

40

43

45

44

44

43

45

48

50

52

54

52

48

44

46

50

50

50

46

45

47

49

49

49

48

46

43

-

-

-

1,305

46.6

2,590

Mar.

46

54

45

48

49

*50

51

53

55

50

60

52

55

£8

61

61

59

55

52

53

55

60

56

58

62

1°

66

62

59

56

54

1,735

56.0

3,440

Apr.

54

54

56

*59

60

59

58

58

59

56

47

55

54

57

66

71

77

82

85

88

96

99

109

130

116

121'

116

116

130

125

-

2,412

80.4

4,780

May

116

*1C3

98

98

118

222

2?2

246

246

242

268

320

328

292

256

228

211

228

236

292

356

344

348

340

332

496

737

994

1.050

*981

981

11,309

365

22,430

June

818

632

530

497

508

620

692

776

818

830

728

*704

776

770

770

922

1,040

1,040

981

988

942

916

824

800

758

752

740

716

698

668

23,254

775

46,120

July

602

542

530

508

492

442

436

426

414

370

340

325

302

*284

279

266

255

251

262

270

270

274

259

240

222

205

201

198

218

198

201

10,082

325

20,000

Aug.

205

215

251

212

208

208

222

*198

179

166

154

145

131

123

115

108

103

100

103

110

110

105

100

98

110

103

98

98

98

103

100

4,379

141

8,690

Sept.

96

91

84

*79

75

73

72

72

68

67

65

64

64

64

64

62

61

60

58

57

61

61

60

57

55

53

50

52

57

61

1,963

65.4

3,890

Calendar year 1950 : Max 1,020 Mln 30 Mean 173 Ac-ft 125,000

Water year 1950-51 : Max 1,040 Mln 30 Mean 172 Ac-ft 124,300

Peak discharge (base, 1,550 cfs).--Ko peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10-2C, Nov. 30 Apr. 8 (no gage-height record 

Dec. 26 to Mar. 27; discharge estimated on basis of 3 discharge measurements, weather records, and 

records for stations on nearby streams).
Drainage area.--32 sq mi, approximately.

Records available.--April 1946 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,694.55 ft above mean sea level (Bureau of 

 Public Roads bench mark). Prior to Oct. 1, 1947, at datum 2.00 ft higher.

Average discharge.--5 years, 35.2 cfs.

Extremes. Maximum discharge during year, 263 cfs May 27 (gage height, 3.85 ft); minimum 

not determined.

1946-51: Maximum discharge, 422 cfs May 22, 1948, from rating curve extended above 

190 cfs; maximum gage height, 5.62 ft May 17, 1948; minimum daily discharge, 2.0 cfs 

Aug. 1-3, 1948, but may have been less during period of ice effect.

Rating tables, water year 195O-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Mar.28

1 .6

1.7

1.8 

1 .9

2.2

4.4 

7.2

Mar. 29 to Sept. 3O 

16 3.0 

3.5 

3.7

122

203

237

Note.--Same as preceding table below 1.8 ft.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

4.0

*4.0

3.7

3.7

3.5

3.5

3.3

3.5

3.3

3.3

3.1

373

3.3

3.1

4.0

8.6

5T5

5.0

4.4

4.2

4.4

4.4

4.4

4.2

4.4

4.4

4.4

4.4

4.4

*4.4

4.7

129.1

4.16

256

NOV.

5.0

5.2

4.4

4.0

4.4

4.7

5.0

5.0

5.2

5.5

4.0

4.5

5.0

5.2

5.5

4.0

4.3

5.0

9.2

TTs

6.1

7.0

6.0

5.5

5.0

5.4

5.0

4.8

4.5

4.5

-

154.4

5.15

306

Dec.

5.5

5.0

4.0

5.0

4.0

3.0 475

5.0

6.0

5.5

5.8

6.0

5.6

5.4

5.6

5.8

5.8

5.8

6.1

6.1

6.1

5.6

5.4

5.4

5.8

5.4

5.0

4.5

4.5

4.5

5.0

162.7

5.25

323

Jan.

4.5

139.5

4.5

277

Feb.

4.0

_

-

-

112.0

4.0

222

Mar.

7.5

*12

11

10

243.0

7.84

482

Apr.

11

12

15

*18

17

17

14

15

14

14

14

12

14

18

26

31

38

38

36

39

47

46

50

58

55

61

57

63

64

*BT

-

968

32.3

1,920

May

46

39

35

39

52

75

88

88

77

84

112

108

98

87

75

75

87

94

108

130

130

119

114

119

132

173

217

225

*222

201

198

3,447

111

6,84O

June

*188

157

124

103

92

97

106

120

124

127

*117

112

117

127

138

144

167

176

184

178

173

156

138

127

111

108

102

94

88

83

3,878

129

7,690

July

71

64

59

52

46

40

35

32

*29

26

25

22

20

19

18

17

17

17

15

14

18

15

12

13

11

11

12

9.9

9.1

8.0

7,6

764.6

24.7

1,520

Aug.

9.5

11

"9.9 13

8.0

*6.9

6.9

6.1

5.2

5.0

4.7

4.4

4.0

3.7

3.5

3.3

3.3

3.7

4.0

5.8

11

7.2

5.8

5.5

5.8

4.7

4.4

5.0

6.6

11

8.0

196.9

6.35

391

Sept.

5.5

5.0

5.0

*4.7

4.7

5.0

5.0

5.0

4.4

T74

4.4

4.4

5.0

5.0

4.7

4.7

4.7

5.0

5.0

5.0

6.9

7.6

575

5.0

5.0

5.0

4.7

5.0

6.9

6.9

155.1

5.17

308

Calendar year 1950: Max 230 Mln - Mean 30.5 Ac-ft 22,050

Water year 1950-51 : Max 225 Mln - Mean 28.4 Ac-ft 20,540

Peak discharge (base, 250 cfs).--May 27 (11 p.m.) 263 cfs (3.85 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 1O-13, 16-18, Nov. 21 to Dec. 15, Dec. 22 to 

Mar. 31 (no gage-height record Dec. 23 to Mar. 29; discharge estimated on basis of 1 discharge measurment, weather records, and records for stations on nearby streams).
GUNNISON RIVER BASIN 109

Cimarron Creek below Squaw Creek, at Cimarron, Colo.

Location. Lat 38°27'00", long. 107°33'30", in sec. 5, T. 48 N., R. 6 W., on left tank 150 

rt upstream from road bridge, 850 ft downstream from Squaw Creek, a quarter of a mile 

northeast of Cimarron, and three-quarters of a mile upstream from mouth.

Drainage area.--232 sq mi.

Records available.--April 1943 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 6,864.10 ft above mean sea level, datum of

 1929. Prior to Oct. 21, 1943, chain gage on bridge 150 ft downstream at different datum.

Average discharge.--8 years, 118 cfs.

Extremes.--Maximum discharge during year, 764 cfs June 17 (gage height, 5.32 ft); minimum

 daily, 8.6 cfs Sept. 13.

1943-51: Maximum discharge, 1,700 cfs June 19, 1949 (gage height, 7.40 ft), from rating curve extended above 1,200 cfs; minimum daily, that of Sept. 13, 1951.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wnicn are poor. Natural flow of stream affected by Cimarron and Owl Creek ditches 

(30,090 acre-ft diverted during water year 1950-51) for irrigation of about 5,000 acres 

in Uncompahgre River drainage; imported water from Blue River drainage; diversions for 

irrigation of about 3,000 acres; and return flow from irrigated areas.

Rating table, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Sept. 27-30)

1.9

2.0

2.2

2.3

2.5 

2.7 

3.0 

3.5

103

190

4.0 300

4.5 435

5.0 615

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

14

*15

14

16

15

15

16

16

17

17

18

16

16

17

16

20

18

17

16

17

18

18

*19

19

19

*18

18

17

18

*18

20

528

17.0

1,050

Nov.

21

22

21

20

22

25

26

25

20

14

11

T5

28

50

37

30

44

37

58

46

42

43

37

35

36

38

36

32

35

41

950

31.7

1,880

Dec.

39

29

28

*38

36

28

20

43

37

35

36

37

35

36

36

35

32

33

34

35

34

33

32

35

32

31

30

25

29

27

29

1,016

32.8

2,020

Jan.

32

*31

30

32

35

33

30

 31 28

31

32

33

33

30

29

31

32

33

32

31

30

36

35

34

33

32

34

35

*33

32

30

993

32.0

1,970

Feb.

22

26

30

36

34

33

32

32

34

35

36

38

37

33

33

34

35

36

35

33

32

34

35

36

35

33

33

32

_

-

934

33.4

1,850

Mar.

27

32

27

30

32

33

35

*42

46

49

44

39

46

48

50

50

40

37

34

40

44

48

39

40

43

43

42

35

30

37

35

1,217

39.3

2,410

Apr.

37

*40

43

47

55

49

45

43

40

40

31

33

36

46

53

55

64

64

54

47

60

61

60

82

64

77

62

72

92 *55

-

1,612

53.7

3,200

May

45

44

36

42

80

156

156

172

139

131

134

134

143

112

92

102

121

123

156

200

180

159

168

152

148

312

456

*571 '528"

459

493

5,944

192

11,790

June

405

265

192

176

170

254

281

355

288

293

*254

236

308

288

315

441

539

535

567

547

514

450

345

350

308

325

302

278

254

212

10,047

335

19,930

July

163

Til

141

108

115

73

80

79

*59

45

33

33

28

27

27

26

28

27

26

30

61

63

42

40

35

30

36

73

89

44

50

1,829

59.0

3,630

Aug.

52

84

~86 175

54

*45

37

31

26

23

20

18

17

16

13

12

11

TT

13

18

24

26

24

21

25

23

23

25

26

26

22

1,027

33.1

2,04O

Sept.

22

19

16

15

14

12

*12

12

11

10

11

8.9

8.6

978

11

12

14

14

15

14

18

22

21

23

30

38

33

33

42

45

-

561.3

18.7

1,110

Calendar year 1950 : Max 462 Mln 8.9 Mean 72.2 Ac-ft 52,270

Water year 1950-51 : Max 571 Mln 8.6 Mean 73. 0 Ac-ft 52,880

Peak discharge (base, 1,050 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 11, 12, Dec. 3, 4, Dec. 7 to Feb. 8, Feb. 16- 

25, Feb. 28 to Mar. 7, Mar. 18, 20, 21 (no gage-height record Oct. 23-25, Dec. 27 to Jan. 2, Jan. 4- 

29; discharge estimated on basis of 2 discharge measurements, weather records, and records for stations on nearby streams).
110 GUNNISON RIVER BASIN

Crystal Creek near Maher, Colo.

Location. Lat 38°33', long. 107 = 30', in SE^ sec. 35, T. 50 N., R. 6 W., on right bank 500 

rt downstream from private bridge, half a mile upstream from diversion to Iron Creek, 

1 mile downstream from North Fork, 7 miles ipstream from mouth, and 7 miles southeast 

of Maher.

Gage.--Water-stage recorder. Altitude of gage is 8,050 ft (by barometer). Prior to Sept. 

3"0 , 1919, staff gage at bridge a quarter of a mile downstream at different datum.

Extremes. --Maximum discharge durinfr year, 270 cfs May 27 (gage height, 3.96 ft); minimum 

dally, 3.5 cfs Feb. 1, Sept. Il7

1916-19, 1945-51: Maximum discharge, 542 cfs Apr. 29, 1948 (gage height, 5.05 ft), 

from rating curve extended above 200 cfs; no flow at times during August 1918.

Revisions. The dates of maximum observed discharge for the water year 1918 have 

been revised to 179 cfs May 5, 6, 7, and 18 (gage height, 1.9 ft). These figures supersede those published in Water-Supply Paper 479.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of a few acres of hay meadows above station.

Revisions.--W 1039: Drainage area. Revised figures of discharge for the water year 1918, 

superseding those published in Water-Supply Paper 479, are given herein.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 4 Apr. 5 to Sept. 30

2.0

2.1

2.2

2.3

3.0

5.0

10

2.1 

2.3 

£.5

3.0 

3.5 

4.0

170

280

Discharge, in cubic feet per second, 

1917-18

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

a!5

15

a 15

a!5

15

a!4

14

a!4

14

a 14

a!4

14

a!3

12

a!2

12

a!2

a!2

12

a!2

12

al2

12

all

alO

9

a9

9

a8

&

385

12.4

764

Nov.

a8

a7

7

a6

5_

a5

5

a5

a5

5

a5

5

a5

5

a5

a5

5

a5

5

a5

5

a5

a5

5

a5

5J

a5 j

5. a5'

a5

-

158

5.3

313

Dec.

a4

124

4

246

Jan.

a4

124

4

246

Feb.

a5

_

_

-

140

5

278

Mar.

-,

.. alO

12

15

15

18

19

18

22

22

12

5

7

5

12

22

22

26

35

51

51

46

35

51

611

19.7

1,210

Apr.

51

63

70

63

63

51

40

46

63

76

76

84

84

84

70

57

51

51

35

40

46

51

70

84

99

99

91

84

99

15£

2,080

69.3

4,130

May

139

139

147

163

171

171

163

132

116

100

86

72

72

108

140

157

157

157

134

137

116

111

127

124

121

111

100

111

108

96

76

3,862

125

7,660

June

56

66

86

90

96

93

96

105

100

108

111

121 10~8

100

82

76

56

69

64

60

60

69

96

76

54

37

30

26

18

14

-

2,223

74.1

4,410

July

5

2

2

2

2

2

2

2

2

2

2

2

6

10

8

8

8

6

6

6

6

6

5

5

5

4

4

4

4

3

3

134

4.3

266

Aug.

2

T

1

2

2

2

z

2

1

1

2

2

2

2

2

2

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

29

0.9

58

Sept.

2

3

3

3

4-

4-

4

4

4

_4?

1]

7

6

6

6

5

5

5

4

4

5

4

4

4

4

4

4

4

4

5

-

181

6.0

359

Calendar year 1917: Max - Mln - Mean - Ac-ft

Water year 1917-18: Max 171 Mln 0 Mean 27.5 Ac-ft 19,940

No gage-height record; discharge estimated.
GONNISON RIVER BASIN 111

Discharge, In cubic feet per second, of Crystal Creek near Maher, Colo., 1917-18, 1950-51--Contlnued

1950-51

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

4.8

4.8

4.6

4.6

4.6

4.6

4.6

4.6

*4.4

ITS

4.6

4.6

4.3

6.0 476-

4.6

4.6

4.8

4.6

4.8

4.8

5.0

5.0

4.8

4.8

4.8

4.8

4.8

4.8

147.0

4.74

292

Nov.

5.0

5.0

4.4

4.8

5.0

*5.5

5.0

5.0

4.8

5.8

4.2

4.8

5.0

5.0

4.8

4.8

4.8

4.8

8.0

77(5

6.0

6.5

5.5

5.5

5.0

5.0

5.0

4.8

4.5

5.0

-

154.3

5.14

306

Dec.

6.0

5.5

4.5

5.5

5.0

4.0

575

7.0

7.5

7.0

6.5

*7.3

7.0

7.5

8.5

8.5

8.0

7.5

8.0

8.5

8.0

7.0

7.0

7.0

7.5

7.0

6.5

6.5

6.5

6.5

6.5

210.8

6.80

418

Jan.

6.5

6.0

6.0

6.0

6.0

6.0

5.5

5.5

5.0

5.0

*6.0

6.0

5.5

5.5

5.5

5.5

5.5

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.5

5.0

4.5

167.0

5.39

331

Feb.

*3.5

T7o

4.5

5.0

5.0

6.0

575

5.5

5.0

5.0

5.5

5.5

5.5

5.0

4.0

5.0

5.0

5.0

5.0

5.0

4.5

5.0

5.5

5.0

5.0

4.5

5.0

5.0

-

_

-

139.0

4.96

276

Mar.

5.0

575

6.0

5.5

6.0

.0

.5

.0

.0

.5

.0

.0

.0

* .0

.0

.5

.5

.0

6.5

7.0

8.0

8.0

7.5

8.0

10

11

TT

10

9.5

8.5

8.0

232.0

7.48

460

Apr.

8.0

970

10

12

*11

14

14

11

11

8.4

8.0

8.0

10

15

21

27

30

30

30

33

37

35

39

43

¥5

41

38

40

37

30

700.4

23.3

1,390

May

29

27 27

32

39

55

57

67

60

67

67

68

64

*59

50

49

56

62

83

105

90

78

*79

83

106

156

208

212

T70

142

148

2,595

83.7

5,150

June

126

82

60

49

48

54

61

70

71

76

67

64

74

76

*82

89

101

108

110

103

90

79

63

55

46

44

39

34

29

!§

2,078

69.3

4,120

July

24

29

32

?8

27

25

24

22

21

19

16

14

13

13

12

*13

13

13

12

17

16

13

14

13

12

11

12

10

10

 9TI 8.9

516.3

16.7

1,020

Aug.

10

10

12

9.4

8.9

7.9

7.9

6.5

6.5

6.0

5.5

5.5

5.5

*4.5

4.5

4.5

4.5

4.5

5.0

7.9

9.4

7.0

6.0

5.5

5.5

4.5

4.2

575

7.4

16

7.0

215.0

6.94

426

Sept.

5.5

5.0

4.2

4.0

4.0

4.0

3.8

4.0

3.8

3.8

 375 3.5

4.0

*3.8

3.8

3.8

3.8

3.8

3.8

3.8

5.0

4.5

4.2

4.0

4.2

4.2

4.0

4.2

6.5

7.0

-

127.8

4.26

253

Calendar year 1950: Max 135 Mln - Mean 23.3 Ac-ft 16,850

Water year 1950-51: Max 212 Mln 3.5 Mean 20.0 Ac-ft 14,440

Peak discharge (base,' 160 cfs). May 27 (10 p.m.) 270 cfs (3.96 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10-13, 15-18, Nov. 21 to Apr. 5, Apr. 11, 1 

No gage-height record Dec. 29 to Apr. 5 (stage-discharge relation affected by Ice during most of 

period); discharge estimated on basis of 4 discharge measurements, weather records, and recor i f 

""ations on nearby streams.
GUffllSON RIVER BASIN

Gunnison River below Gunnison tunnel, Colo.

Location. Lat 38°32', long. 107°39' , in NWij sec. 10, T. 49 N. , R. 7 W. , on left bank a

quarter of a mile downstream from Gunnison tunnel, 5 miles downstream from Crystal

Creek, and 12 miles northeast of Montrose. 

Drainage area. 3,980 sq mi, approximately. 

Hecoras available.--January 1943 to September 1951. April 1905 to September 1911 at site

above uast .portal. Records since Jan. 20, 1943, equivalent to earlier records if flow

through Gunnison tunnel is added to flow past station. 

Gaze. --Water-stage recorder. Datum of gage is 6,527.06 ft above mean sea level, datum of

 TT929. Apr. 9, 1905, to Sept. 30, 1911, staff gage 300 ft upstream from East Portal

Gunnison tunnel at different datum. 

Average discharge. 14 years (1905-11, 1943-51), 1,909 cfs (adjusted for Gunnison tunnel);

a years (iyqa-51), 1,201 cfs (unadjusted). 

Extremes. Maximum discharge during year, 6,450 cfs May 29 (gage height, 7.62 ft); minimum

 dally, 0.3 cfs Oct. 13-17, Oct. 26 to Nov. 7.

1905-11, 1943-51: Maximum discharge observed, 15,000 cfs (discharge measurement) 

June 14, 1906 (gage height, 14.20 ft, site and datum then in use); minimum daily prior 

to construction of Gunnison tunnel not determined; no flow Oct. 8, 1949, Sept. 5, 6, 15, 

16, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

whicn are fair. Natural flow of stream affected by transbasin diversion ['see below), 

Taylor Park Reservoir (see p. 91 ), diversions for irrigation of about 63,000 acres and 

return flow from irrigated areas. Record of diversion through Gunnison tunnel during 

water year 1950-51 is published below:

Month

March. ......

Runoff ±n 

acre-feet

3,690

Month

June .....

Runoff in 

acre-feet

52,350

Month

September. . . .

Runoff in 

acre -feet

59 450

56,870

Cooperation. Two discharge measurements and record of diversion through Gunnison tunnel

rurnisned by Uncompahgre Valley Water Users Association. 

Correction.--A miscellaneous measurement was published in Water-Supply Paper 359 (p. 254)

under date of June 4, 1913, gage height, 3.29 ft, discharge, 168 cfs for Gunnison River,

old gaging station at River Portal, Colo. The correct stream is Uncompahgre River at

Montrose, Colo.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

-0.9 0.3 -0.4 5.0 0.0 32 2.0 860 6.0 4,220

-.8 .9 -.3 7.6 .3 98 3.0 1,460 7.0 5,500

-.7 1.7 -.2 12 .5 155 4.0 2,220 7.5 6,260

-.5 3.8 -.1 20 1.0 340 5.0 3,180 

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14,

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

81

67

67

50

49

98

*88

65

59

38

36

7.9

.3

75

.3

.3

.3

12

4.4

60

117

117

98

4.7

3.0

.3

.3

.3

.3

**.3

.3

1,125.3

36.3

2,230

Nov.

0.3

.3

.3

.3

.3

.3

.3

29

46

2.8

1.9

65

268

380

370

250

240

260

380

400

380

400

380

380

380

380

380

370

350

375

-

6,469.8

216

12,830

Dec.

400

380

332

360

340

310

320

*510

560

540

470

430

420

470

500

500

470

400

420

440

430

420

380

350

360

360

350

370

390

380

380

12,742

411

25,270

Jan.

420

*400"

400

410

420

400

380

350

380

410

410

400

390

390

410

400

400

400

400

390

370

380

390

390

390

380

390

390

400

390

370

12,200

394

24,200

Feb.

300 *35o

360

390

420

430

400

380

380

380

390

400

390

370

370

380

400

400

400

410

410

410

420

430

430

420

420

420

_

_

-

11,040

394

21,900

Mar.

420

ISO

460

450

450

470

480

*490

500

500

500

500

510

520

520

520

500

480

540

580

660

680

680

595

545

560

610

625

485

*505

550

16,345

527

32,420

Apr.

550

400

390

475

455

308

137

112

61

34

32

88

131

155

253

276

308

280

232

240

550

570

620

764

645

680

625

625

818

735

-

11,649

388

23,110

May

490

320

186

*131 '2^2

938

1,240

1,580

1,540

1,530

1,660

1,850

1,910

1,680

1,350

1,210

1,190

1,350

1,600

2,130

2,490

2,480

2,330

2,300

2,330

3,060

4,260

5,750

6,000

*5,580

5,230

65,987

2,129

130,900

June

4,920

4,110

3,260

2,690

2,340

2.270

2,420

2,730

2,880

3,010

2,970

2,680

2,900

3,100

3,400

3,870

5,020

6.240

*5,580

5,350

4,950

4,800

4,220

3,900

3,770

3,710

3,560

3,400

3,180

2,960

-

110,190

3,673

218,600

July

2,640

2,260

2,170

1,990

1,880

1,590

1,460

1,350

1,220

1,050

920

710

610

515

465

415

340

365

*385

400

595

645

455

420

332

211

156- 176

380

296

280

26,781

864

53,120

Aug.

332

490

1,030

1,060

914

872

700

555

*365

211

120

214

172

114

125

88

61

76

149

197

272

312

312

288

284

242

197

166

140

134

140

10,332

333

20,490

Sept.

100

70

65

60

70

90

*110

63

30

*9.5

9.5

30

72

84

125

70

63

70

70

74

67

93

96

98

30

7.1

5.5

BTT

125

186

-

I, 048.1

68.3

4,060

Calendar year 1950: Max 5,030 Min 0 Mean 782 Ac-ft 566,000

Water year 1950-51: Max 6,240 Min 0.3 Mean 786 Ac-ft 569,100

Peak discharge (base, 6,000 cfs) . May 29 (2 p.m.) 6,450 c'fa (7.62 ft); June 18 (ll a.m.) 6,420 

cfs (7.60 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

Mote. Ho gage-height record Oct. 5, 12-20, Oct. 24 to Nov. 8, Nov. 10, 11, Sept. 1-7, 9-12, 25} 

discharge estimated on basis of 2 discharge measurements, 1 field estimate, weather records, and records for nearby stations. Stage-discharge relation affected by ice Nov. 16-28, Dec. 1, 2, 5, 6, 

8-10. Dec. 13 to Mar. 24.
GUNNISON RIVER BASIN 113

location.--Lat 38 3 44', long. 107 3 31', in sec. 24, T. 15 S., R. 91 W., on left bank 6 ft upstream from, county "bridge, Just upstream from Second Creek, 6 miles northeast of Crawford, and 6-i- miles upstream from Iron Creek.

Orainage area.--42 sq mi, approximately.

Records available.--February 1941 to July 1944, April 1945 to September 1951. (April 1936 

to September 1940 in files of Bureau of Reclamation.)

ge.--Water-stage recorder. Altitude of gage is 7,200 ft (by barometer). Prior to Nov.

6, 1938, staff gage at same site and datum.

E-toenes.--Maximum discharge during year, C38 cfs May 28 (gage height, 4.22 ft); minimum

 cTaTTy, 3.5 cfs Feb. 1.

1941-44, 1945-51: Maximum discharge, 604 cfs May 19, 1948, from rating curve extended above 160 cfs; maximum gage height, 5.34 ft May 21, 1948; minimum daily discharge, 2.0 cfs Feb. 11, 1941.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of a few acres of hay meadow above station. 

Saddle Mountain ditch diverts water above station for irrigation of about 800 acres be 

low station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 2-24)

Oct. 1 to May 27

2.7 

3.0 

3.5 

15 4.0

140

215

May 28 to Sept. 30

5.5 3.0

8.0 3.5

17 4.2

60

130

235

35

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13:4

:.s

 6

' 7

'8

'9

20

21

22

23

34

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

r b.7

b.7

b.7

b.3

5.8

5.8

5.8

5.8

5.8

5.8

*5.8

5.8

Nov.

6.9

6.7

6.5

6.3

6.5

*6.5

6.5

fa. 5

6.7

b4.0

b6. 5

b5.8

5.8 ; 6.5

5.6

6.1

6.7

6.1

6.1

6.1

6.1

6.1

6.1

5.8

4.5

5.4

7 .2

772

6.9

6.9

7.2

7.2

191.9

6.19

381

6.5

6.5

b5.8

6.7

6.7

~8.2 10

7 .6

7.4

6.9

6.5

6.3

6.3

6.3

b6.1

b5.8

t>5.8

-

197.3

6.58

391

Bee.

b.5

bS.O

b4.5

b5.5

bS.O

b4.0

b5T4"

bb.2

6.5

b6. 2

b6. 4

*6.6

6.6

6.6

7.5

7.5

7.5

7.0

7.0

7.0

6.5

5.5

5.5

5.5

6.0

5.5

5.0

5.O

5.0

5.5

5 .5

185.0

5.97

3b7

Jan.

5.0

4.5

4.5

5.0

5.0

4.5

4.0

T7V

4.0

4.5

*4.6

4.5

4.0

4.0

4.5

4.5

4.5

4.5

4.5

4.0

4.5

*4.9

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4.5

*4.0

141.5

Feb.

3.5 47B5.0

5.5

5.5

5.0

5.0

5.0

4.5

5.0

5.0

5.0

5.0

4.5

4.5

5.0

5.0

5.0

5.0

4.5

4.0

4.5

4.5

4.5

4.5

4.5

4.5

4.5

_

.

-

132.5

4.56 4.73

231 263

Mar.

4.5

570

5.0

5.0

5.0

5.0

5.5

b.O

6.0

7.5

7.0

6.5

6.5

7.0

8.0

*9.0

8.5

8.0

8.0

10

12

12

11

11

12

15

T5

15

14

13

12

275.0

8.87

545

Apr.

11

T3

16

18

*18

16

14

15

14

14

13

11

15

22

30

37

42

42

43

48

53

52

57

64

62

68

67

73

74

64

-

1,086

36 .2

2,150

May

58

55

53

61

73

90

87

95

88

95

109

116

101

*88

78

77

87

92

109

136

140

130

*122

125

139

178

209

228

T87

145

133

3,484

112

6,910

June

127

107

80

65

64

63

77

86

80

81

77

77

80

81

*83

85

94

93

93

89

82

77

70

64

jj7_

65

69

64

61

57

2,344

78.1

4,650

July

55

55

46

43

43

42

39

36

34

33

30

27

26

23

23

*23

22

20

19

22

20

18

18

16

16

15

15

14

14

13 Tl"

629

2b.7

1,640

Aug.

1515"

15

14

15

14

13

12

11

11

10

9.6

9.6

*9.2

8.8

8.4

8.4

8.0

8.4

9.2

9.6

9.2

8.8

8.8

8.4

8.0

7.8

8.4

9.6

14

10

327 .2

10.6

649

Sept.

9.2

8.8

8.4

8.0

8.0

7 .8

7.8

7.5

7 .2

7.0

7.0

7.0

7.2

*7.0

7.5

7.2

7.2

7.2

7.0

7.0

7.5

7.2

7.0

6.5

6.5

6.2

6.0

6.2

7.2

7 .2

218.5

7.28

433

Calendar year 1950 : Max 22fa Min 4.0 Mean 36.3 Ac-ft 26,260

Water year 1950-51 :' Max 228 Min 3.5 Mean 25.8 Ac-ft 18,660

Peak discharge (base, 260 cfs).--No peak above tase.

* Discharge measurement made on this day.

t Stage-discharge relation affected by ice.

Note.--No gage-height record Dec. 12 to Apr. 4 (stage-discharge relation affected by ice most of 

period), Apr. 10 to May 4; discharge estimated on basis of 5 discharge mesurements, recorded range in 

stage, wsather records, and records for stations on nearby streams.
114 GUMISON RIVER BASIN

Iron Creek near Crawford, Colo.

Location. Lat 38°41', long. 107°36', in SW^ sec. 13, T. 51 N., R. 7 W., on right bank a 

quarter of a mile (revised) downstream from Clear Fork and 1.8 miles southeast of 

Crawford.

Drainage area.--67 sq mi, approximately.

Records available.--September 1947 to September 1951.

Gage. Water-stage recorder. Datum of gage is 6,443.73 ft above mean sea level (levels ly 

Bureau of Reclamation).

Extremes. Maximum discharge during year, 218 cfs Aug. 20 (gage height, 4.62 ft), from 

rating curve extended above 100 cfs on basis of slope-area determination at gage heigt t 

5.70 ft; minimum daily, 2.6 cfs Sept. 8, 9.

1947-51: Maximum discharge, 367 cfs Oct. 14, 1947 (gage height, 6.05 ft), from rating 

curve extended above 100 cfs on basis of slope-area determination at gage height 5.70 

ft ; minimum daily, that of Sept. 8, 9, 1951.

Remarks. Records poor. Natural flow of stream affected by diversions from Crystal Creel', 

storage in Gould Reservoir (capacity, 6,420 acre-ft), diversions for irrigation, and 

return flow from irrigated areas.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

6.7

7.0

6.7

6.4

6.7

6.7

7.0

7.0

7.0

*7.0

7.4

7.0

7.4

8.2

8.2

9.0

9.0

8.6

9.4

11

IT

9.8

8.6

8.6

8.6

8.2

8.2

8.6

8.6

9.0

249.3

8.04

494

Nov.

9.0

9.0

9.0

8.6

8.6

*8.6

8.2

8.2

8.6

6.7

7.8

b8. 2

10

11

9.4

8.2

9.4

9.4

18

T7

18

18

12

11

10

11

11

9.4

9.4

9.4

312.1

10.4

619

Dec.

13

7.0

5.2

7.0

b7.8

b5.0

7.4

9.4

14

12

12

*12

12

12

14

16

T3

12

13

10

9.0

9.4

9.4

8.6

9.8

b8. 6

b7.4

b7.0

9.4

9.0

9.8

311.2

10.0

617

Jan.

9.8

bTTI

b9.0

b9.0

9.0

b6.5

b6.0

b6.5

9.4

b7.5

*7.8

b7.O

b6.5

b6.5

b7.0

b7.5

9.0

9.4

b8.6

b7.0

b7.2

*9.4

9.0

9.4

9.4

b8.5

8.6

9.0

9.4

b8.0

*b7.0

251.3

8.11

498

Feb.

b5.0

b6.0

b6.5

b7.0

b7.5

8.2

b7.5

8.2

8.2

8.2

9.4

14

T5

be.o

b7.0

b8.0

9.4

b9.0

9.0

8.2

9.8

11

11

9.0

8.6

b7.0

7.4

7.6

_

_

-

235.9

8.42

468

Mar.

b7.O

b6.5

b6.5

b8.0

10

10

10

9.4

9.4

8.6

7.4

5.8

7.0

7.4

7.4

*8.2

6.4

5.8

7.4

10

7.8

8.6

6.4

6.4

6.4

7.4

8.2

6.4

5.2

67T

6.1

233.2

7.52

463

Apr.

6.7

6.1

6.4

6.4

*8.6

6.7

6.4

6.7

5.8

5.8

4.3

572

4.9

5.2

5.5

5.8

5.5

5.2

5.2

6.1

7.8

8.2

13

14

6.7

7.4

8.2

8.6

13

25

-

230.4

7.68

457

May

24

28

11

11

9.4

12

14

14

20

17

16

15

17

*20

18

9.4

9.8

12

15

14

29

23

*20

27

29

28

26

29

29

22

21

589.6

19.0

1,170

June

21

22

15

14

12

8.6

6.7

17

13

20

23

20

24

24

*27

26

29

37

34

33

32

33

29

34

32

27

24

20

16

14

-

687.3

22.9

1,360

July

12

11

12

9.0

10

10

11

12

12

12

11

11

11

10

9.8

*10

10

10

9.4

12

14

T2

10

10

8.6

8.2

9.0

8.2

7.8

7.4

774

317.8

10.3

630

Aug.

7.0

7.8

7.4

8.2

8.6

7.0

6.4

5.8

5.2

5.5

5.2

5.2

4.6

*776

4.6

5.2

7.4

8.2

13

32

19

12

12

10

12

12

13

13

14

14

9.4

299.3

9.65

594

Sept,

8.2

771

7.4

7.4

7.0

4.3

3.4

2.6

17F

3.2

3.1

3.4

3.8

*3.8

3.8

3.8

3.7

3.7

3.7

3.8

4.0

4.0

4.0

3.8

3.8

3.8

3.8

4.0

4.9

4.6

-

130.8

4.36

259

Calendar year 195O: Max 43 Mln 4.6 Mean 14.8 Ao-ft 10,750

Water year 195O-51: Max 37 Min 2.6 Mean 10.5 Ao-ft 7,630

Peak discharge (base, 150 cfs). Aug. 20 (9 p.m.) 218 cfs (4.62 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
GIMISON RIVER BASIN 115

East Muddy Creek near Sardine, Colo.

Location.--Lat 39°01', long. 107°S2 ! , in sec. 17. T. IS S., R. 89 W., on left bank a quarter of a mile downstream from Spring Creek, l=r miles upstream from West Muddy Creek, 

and 6j miles upstream from Bardine.

Drainage area. 136 sq mi.

Records available.--May 1935 to September 1951 (no winter records 1935-41).

Gage.--Water-stage recorder. Datum of gage is 6,654.78 ft above mean sea levej., datum of 

T929. Prior to Oct. 1, 1936, water-stage recorder at site 10 ft downstream at datum 

0.50 ft higher.

Average discharge. 10 years (1941-51), 91.4 cfs.

Extremes.--Maximum discharge during year, 480 cfs May 26 (gage neight, 1.40 ft); minimum 

daily, 9.0 cfs Nov. 10.

1935-51: Maximum discharge, :i,190 cfs May 13, 1941 (gage height, 3.41 ft), from 

rating curve extended above 800 cfs; minimum not determined.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of several hundred acres of hay meadow above 

station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 19

7

13

May 20 to Sept. 30

-0.2

-.1

.1 35

.3 72

0.7 180

1.0 282

1.2 370

-0.2 6

-.1 11

0 20

.1 32

0.3 68

.6 144

1.0 282

1.3 425

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

17

17

Ib

15 

15

16

15

15

15

14

*12

12

12

12

12

12

12

12

13

13

12

12

13

13

14

14

14

14

14

13

13

422

13.6

837

Nov.

15

15

16

16 

16

16

*15

15

12

9.0

14

18

17

17

18

14

15

15

27

23

22

21

17

17

18

18

17

16

15

16

-

500.0

16.7

992

Dec.

20

17

14

19

IB 

15

18

19

19

16

15

18

*18

17

17

16

14

13

16

16

13

12

13

13

14

14

13

12

14

14

14

481

15.5

954

Jan.

14

13

13

14

13

12

12

13

*14

14

14

13

13

14

14

14

14

14

14

13

14

14

14

13

13

14

14

15

13

419

13.5

831

Feb.

*11

12

13

14

15

14

14

14

15

16

18

18

16

14

15

15

15

15

15

14

15

16

15

15

15

14

14

_

-

411

14.7

Mar.

13

15

14

13

15

15

16

18

19

18

14

15

*16

17

19

18

16

14

17

17

21

20

21

24

30

29

28

27

28

30

591

19.1

815 | 1,170

Apr.

35

35

41

*51

43

40

40

35

34

30

30

31

49

68

85

98

98

103

127

134

140

153

193

153

168

150

177

215

174

2,778

92.6

5,510

May

153

134

129

145

196 

275

316

343

304

321

370

392

343

275

*239

243

304

325

343

381

366

348

343

*343

361

403

408

414

370

308

312

9,507

307

18,860

June

286 246"

203

160

141 

129

135

129

120

123

123

114

109

*112

114

112

135

163

147

163

170

154

123

109

102

95

88

81

72

12.

4,028

134

7,990

July

60

50

45

45

40 

35

32

31

28

26

25

22

22

21

21

20

*24

22

19

17

22

28

24

19

16

13

13

12

12

10

10

784

25.3

1,560

Aug.

11

10

21

17 

17

16

14

12

14

21

22

22

*21

22

20

19

19

19

19

24

30

31

27

20

26

20

16

16

18

35

28

627

20.2

1,240,

Sept.

21

17

18

16

16

16

16

16

16

16

16

16

*16

16

15

15

15

15

14

14

16

16

15

14

IS

13

13

13

16

17

-

466

15.5

924

Calendar year 1950: Max 530 Min 9.0 Mean 80.5 Ac-ft 58,250

Water year 1950-51: Max 414 Hln 9.0 Mean 57.6 Ac-ft 41,680

Peak discharge (base, 650 efs). No peak above base.

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 9-11, 15-18, 23-30, Dec. 2-11, Dec. 16 to 

Mar. 30 (no gage-height record Jan. 7 to Mar. 14; discharge estimated on basis of 3 discharge measurements, weather records, and records for North Fork Gunnlson River near Somerset).
116 GUNNISON RIVER BASIN

Location. Lat 38°56'25", long. 107°21'30", In NEij sec. 8, T. 13 S., R. 89 W. , on right 

 bank "30 ft downstream from bridge on State Highway 135 at Sardine, a quarter of a mile

upstream from confluence with Anthracite Creek, lj miles downstream from Deep Creek, aid

b\ miles east of Somerset.

Drainage area.--246 sq mi.

Records available.--October 1949 to September 1951.

Extremes.--Maximum discharge during year, 714 cfs May 8 (gage height, 3.79 ft); minimum

 daily, 14 cfs Sept. 27, 28.

1949-51: Maximum discharge, 1,110 cfs May 16, 1950 (gage height, 4.34 ft), from 

rating curve extended above 780 cfs; minimum daily, that of Sept. 27, 28, 1951, but may 

have been less during period of no gage-height record.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 which are poor. Natural flow of stream affected by small diversions for irrigation to 

nearby drainage areas, irrigation of about 900 acres above station, and storage in Overland Reservoir (capacity, 2,660 acre-ft).

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per aecond)

Oct. 1 to Apr. 3

1.2 12

1.5 29

1.9 71

1.2 

1.5 

1.7 

2.0

Apr. 4 to Sept. 30 

11

330

540

660

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

23

22

22

21

22

21

21

21

*21

21

20

21

21

21

21

20

21

19

18

2?

22

21

22

22

21

21

21

20

21

660

21.3

1,310

Nov.

20

21

21

21

22

22

*22

21

18

15_

20

22

26

27

28

27

28

b40

b50

b40

b38

35

29

25

25

30

26

25

25

b26

-

795

26.5

1,580

Dec.

27

24

20

27

24

22

26

28

28

24

23

*28

2T

27

26

23

21

20

25

25

20

17

17

19

20

20

19

17

20

21

21

707

22.8

1,400

Jan.

20

19

18

19

20

18

17

17

18

*19

19

19

18

18

19

19

19

20

20

20

19

*21

22

21

20

19

22

23

22" 24

20

609

19.6

1,210

Feb.

*17

19

20

22

23

24

22

21

21

22

25

28

28

24

21

22

23

23

23

22

21

22

23

23

22

22

22

21

_

_

-

626

22.4

1,240

Mar.

2023"

21

20

22

23

23

26

29

31

25

22

23

*24

26

31

28

26

25

28

32

34

32

34

36

39

43

40

38

40

44

908

29.3

1,800

Apr.

50

58

70

*76

70

66

64

60

56

56

b52

4848"

61

86

100

136

145

163

183

240

273

273

337

315

309

300

320

360

340

-

4,715

157

9,350

May

320

300

260

258

297

420

485

582

546

505

594

600

552

445

*404

420

510

540

570

624

600

570

535

*540

570

612

630

636

570

465

460

15,420

497

30,590

June

420

368

318

255

216

198

207

201

192

189

186

166

158

*161

173

192

219

252

231

258

255

222

183

168

156

152

143

126

112

105

-

6,182

206

12,260

July

78" 92

73

69

61

53

47

44

41

38

35

32

30

27

24

24

*28

27

24

23

29

35

33

26

21

20

22

20

19

17

16

1,128

36.4

2,240

Aug.

17

16

31

28

26

24

22

19

16

24

27

27

*25

25

24

22

22

22

23

28

36

34

33

25

30

24

20

20

22

44

33

789

25.5

1,560

Sept.

25

21

20

20

18

17

17

17

17

17

17

17

*17

18

17

16

16

16

16

16

18

18

16

16

16

15

14

14

19

19

-

5?0

17.3

1,030

Calendar year 1950 : Max 993 Mln 15 Mean 158 Ac-ft 114,400

Water year 1950-51: Max 636 Min 14 Mean 90.6 Ac-ft 65,570

Peak discharge (base, 1.100 cfsj_. No peak above base. 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
!! RIVER BASIN 117

35 east of Somerset and 4 miles upstream from Hubbard Creek. 

Drainage area.--521 sq ni. 

Recoris available.--March 1934 to Seotember 1951.

Gage.--ATater-stage recorder. Datum of gage is 6,038.6 ft above mean sea level, datum of

Extremes. Maximum discharge during year, 3,210 cfs May 27 (gage height, 4.26 ft); minim, an 

 daily, 17 cfs Nov. 10.

1934-51: Maximum discharge, 5,850 cfs May 13, 1941 (gage height, 6.30 ft), from 

rating curve extended above 3,200 cfs; minimum daily, that of Nov. 10, 1950.

Remarks. Records good except thase for periods of ice effect, which are fair. Natural 

flow of stream affected by small diversions for irrigation to nearby drainage areas, 

irrigation of about 1.200 acres above station, and storage in Overland Reservoir (capacity, 2,660 acre-ft).

Rating table, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used May 29 to June 29)

0.5 12

.6 19

.7 30

1.0 

1.3 

1.5

165

260

2.0 590

3.0 1,500

4.0 2,820

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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.

82

82

76

76

74

74

76

74

74

74

*74

72

70

68

68

72

70

70

68

68

64

68

68

68

68

68

66

64

64

62

60

2,182

70.4

4,330

Nov.

64

64

64

60

60

62

*64

62

58

11

40

54

64

64

64

44

70

68

117

104

90

92

76

70

70

72

70

66

57

62

-

1,989

66.3

3,950

Dec.

85

68

39

18

74

44

72

82

87

66

62

*85

80

80

82

76

57

48

74

74

44

42

45

56

60

58

57

51

68

70

68

2,032

65.5

4,030

Jan.

70

64

58

70

70

64

b50

b52

64

68

*66

68

62

60

64

62

62

62

62

62

58

*62

62

62

60

58

64

68

72

54

b50

1,930

62.6

3,830

Feb.

*b45

b50

b56

b64

b68

70

68

68

66

68

74

90

90

b65

b60

b68

b72

74

74

72

68

74

80

80

78

76

74

72

_

-

1,964

70.1

3,900

Mar.

62

74

66

60

68

74

74

87

97

109

104

82

92

*90

97

109

94

80

72

87

90

109

99

102

117

148

158

134

117

127

127

3,006

97.0

5,960

Apr.

134

137

162

*210

240

225

206

210

178

170

140

144

137

200

280

363

420

434

530

612

732

764

780

900

796

852

748

860

1.020

860

-

13,444

448

26,670

May

710

628

582

710

909

1,310

1,430

1,600

1,460

1,480

1,670

1,700

1,540

1,310

*1,190

1,270

1,490

1,600

1,740

2,000

1,960

1,820

*1,740

1,790

1,920

2,180

2,570

2.740

2,310

1,920

1,900

49,179

1,586

97,550

June

1.800

1,430

1,150

963

860

884

1,010

1, 1-20

1,130

1,140

1,040

990

1,080

*1,170

1,310

1,400

1,570

1,670

1,660

1,580

1,490

1,410

1,210

1,100

1,040

1,050

999

963

909

884

-

36,012

1,200

71,430

July

804

T56

748

718

650

568

560

530

462

420

369

363

333

304

282

*293

288

276

255

255

282

245

220

192

174

162

170

170

154

144

157

11,284

364

22,380

Aug.

151

137

288

196

192

162

144

130

122

122

117

114

*107

104

102

97

97

94

92

99

109

109

104

99

104

92

87

85

92

151

114

3,813

123

7,560

Sept.

102

97

90

85

97

102

102

97

92

74

68

68

*68

72

70

66

66

66

64

62

74

70

66

62

62

62

58

60

82

78

-

2,282

76.1

4,530

Calendar year 1950: Max 2,820 Mln 17 Mean 462 Ac-ft 334,200

Water year 1950-51: Max 2,740 Mln 17 Mean 354 Ac-ft 256,100

Peak discharge (base. 2.400 cfs).--May 27 (11:30 p.m.) 3,210 cfs (4.26 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

256684 O - 53 - 9
118

Leroux Creek near Cedaredge, Colo

Location,--Lat 38°55', long. 107 ' in sec. 16, T. 13 S., R. ¥. , on right bank

tip stream fron head gate of Overland ditch, 400 ft upstream from Cow Creek, and

7 miles northeast of Cedaredge.

Drainage area.--43 sq :ii, approximately.

Records available.--October 1936 to September 1951 (no winter records 1936-46).

Sage.--Water-stage recorder.

Average discharge.--5 years (1947-52), 48.0 cfs.

Extremes.--Maximum discharge during year, 765 cfs May £7 {gage height, 4.17 ft); minimum

 daily, 1.8 cfs Nov. 10.

1936-51: Maximum discharge, 1,310 cfs Hay 26, 1942, from rating curve extended abo"'e 

650 cfs; maximum gage height, 5.10 ft May 10, 1937; minimum daily discharge, that of 

Nov. 10, 1950, but may have been less during periods of no gage-height record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

whicti are poor. One small diversion and several small reservoirs above station for 

irrigation below station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 2 to Nov. 15, Nov. 18-27, 30)

1 to Mar. 14 Mar. 15 to Sept. 30

0.5 

.6

1.0

1.1

1.6 

2.4 

5.0 

8.5 

10.5

0.9 

1.0 

1.2 

1.5 

1.8

6.0 

7.5

45

70

160

280

445

680

Discharge, in cubic feet per second, water year October 195o to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

9.7

9.3

8.5

7.5

7.3

7.1

7.1

7.1

*7.1

7.1

6.9

6.7

6.0

6.0

6.2

5.8

5.6

5.6

5.6

5.6

5.6

5^4 

5.4

5.6

5.8

5.9

5.9

5.9

5.9

5.9

205.1

6.62

407

Nov.

5.9

6.0

4.9

5.9

5.2

*5.2

5.4

5.2

3.7

1 ,8

4.3

6.9

5.8

5.0

4.9

4.5

5.4

6.0

7.3

5.8

5.4

7.3

8.1 

7.5

7.3

6.7

6.7

6.9

6.4

6.9

-

174.3

5.81

346

Dec.

7.8

7.5

7.0

8.0

7.0

6.0

7.0

8.0

8.5

8.9

8.5

6.6

*6.6

8.1

8.3

7.5

6.0

7.0

8.1

8.1

8.0

7.5

8.0 

8.0

8.5

8.5

8.5

8.5

9.0

9.0

8.5

242.5

7.82

481

Jan.

8.5

8.0

8.0

8.5

9_.Q

6.0

5.0

4.5

5.0

*5.0

6.0

6.0

5.5

5.5

7.0

7.0

7.0

7.0

6.5

6.5

6.0

6.5

6.5 

6.

6.0

6.0

6.0

6.5

7 .C

6.0 *5.~

199.5

6.44

396

Feb.

3.5

4.5

5.0

5.5

6.0

1=0

6.5

6.5

6.0

6.0

6.5

7.0

6.5

6.0

6.0

6.0

6.5

6.5

6.5

6.5

6.0

6.0

7.0 

7.0

7.0

6.5

6.0

6.0

_

-

-

172.0

6.14

341

Mar.

5.5

6.0

5.5

5.0

5.0

5.5

5.5

6.0

S.O

6.5

S.O

5.0

5.0

5.5

*6.0

6.5

5.5

4.5

5^0

6.0

6.0

7.O

7.5 

7.0

7.0

8.0

8.5

8.0

7.5

7.5

6.9

192.4

6.21

382

Apr.

7.2

7.2

8.0

9.0

*8.5

8.0

7.8

7.5

7.2

7.2

1*0

7.2

7.8

11

15

19

22

19

20

22

23

22

30 

36

32

35

32

40

43

33

-

553.6

18.5

1,100

May

28

24

26

39

62

88

106

110

100

110

142

142

112

95

*85

110

144

158

215

240

210

212

210 

228

355

429

486

405

292

258

250

5,471

176

10, 850

June

225

188

148

134

136

142

144

138

138

138

129

112

99

94

*95

95

100

112

104

106

102

87

78 

63

47

44

41

41

39

35

-

3,154

105

6,260

July

33

32

32

31

32

28

26

26

29

36

35

35

35

36

36

38

*49

48

42

33

33

32

33 

32

29

27

30

28

28

35

36

1,035

33.4

2,050

Aug.

36

35

34

27

30

25

24

32

30

29

30

30

*31

32

31

32

32

33

33

35

35

33

30 

28

28

25

24

25

27

46

24

946

30.5

1,880

Sept.

19

19

19

23

23

22

19

2T

18

19

18

18

*19

19

20

19

19

19

18

19

21

19

19 

18

18

16

14

14

23

18

569

19.0

1,130

Calendar year 1950 : Max 413 Mln 1.8 Mean 47.7 Ac-ft 34,510

Water year 1950-51 : Max 486 Mln 1.8 Mean 35.4 Ac-ft 25,620

Peak discharge (base. 600 efs). May 27 (6:30 p.m.) 765 cfs (4.17 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 16, 17, 28, 29, Dec. 1-9, 17, 18, Dec. 21 to 

Mar. 22, Mar. 24-26 (no gage-height record Jan. 10 to Mar. 15; discharge estimated on basis of 3 discharge measurements, weather records, and records for stations on nearby streams).
GUMISON RIVER BASIN 119

Currant Creek near Cedaredge, Colo.

Location.--Lat 38°51', long. 107 C 53', in sec. 10, T. 14 S., R. 94 W., on right bank 4 miles 

southeast of Cedaredge and 6 miles upstream from mouth.

Drainage area.--36 sq mi, approximately.

Records available.--Hay 1948 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 5,700 ft (by barometer).

Extremes.--Maximum discharge during year, 77 cfs May 7 (gage height, 3.03 ft); minimum 

daily, 0.3 cfs Sept. 21-23.

1948-51: Maximum discharge, 162 cfs Apr. 24, 1949 (gage height, 3.58 ft), from 

rating carve extended above 50 cfs; minimum daily, that of Sept. 21-23, 1951.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

wKich are poor. Many diversions above station for irrigation, some of which are to or 

from nearby streams.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. I-f.)

Oct. 1 to Feb. 13 Feb. 14 to Sept. 30

Discharge

1.4 0.6 1.2 0.1 1.7 4.0

1.5 1.2 1.3 .4 1.9 8.0 

1.7 3.0 1.4 1.0 2.2 18 

1.6 2.8 2.5 34 

In cubic feet per second, water year October 1350 to September 1C51

-)ay

1

2

3

4

5

6

7

8

9

10

11

12

13

U

15

16

17

18

19

21

22" 3

24

25

26

27

28

29

30

31

^otal

"ean

Ac-ft

Oct.

0.7

.7

.8

.8

.8

.8

1.0

1.1

1.1

*1.4

1.4

1.4

1.4

1.4

1.4

1.1

1.0

.9

1.0

1.0

1.1

1.2

1.3

1.3

1.4

1.5

1.5

1.5

1.5

1.6

1.6

36.7

1.18

73

Nov.

1.5

1.4

*1.6

1.7

1.7

1.8

1.8

1.8

1.8

1.0

2.5

2.5

2.6

2.6

2.6

2.5

2.6

2.6

2.8

276

2.5

2.5

2.6

2.6

2.6

2.6

2.7

2.7

2.8

2.8

-

68.4

2.28

136

Dec.

2.7

2.7

2.6

2.7

2.5

2.2

2.3

2.3

2.1

1.9

*1.8

1.9

1.9

1.9

1.9

1.9

1.8

1.9

1.9

1.9

1.9

1.9

1.9

2.0

2.0

2.1

2.2

2.2

2.9

2.9

5.0

67.8

2.19

134

Jan.

2.9

2.6

5.0

279

*2.9

2.5

2.0

1.6

TTs

2.0

2.2

2.5

2.3

2.3

2.2

2.3

2.3

2.3

2.3

2.3

2.3

2.3

*2.4

2.4

2.5

2.4

2.5

2.5

2.6

2.4

*1.6

72.9

2.35

145

Feb.

1.5

1.6

2.0

2.0

2.2

2.2

2.4

2.5

2.2

2.3

2.5

3.0

2.8

2.7

2.6

2.6

2.7

2.8

2.9

2.9

3.2

3.2

3.2

5.4

3.4

3.0

3.2

5.3

_

_

-

73.9

2.64

147

Mar.

3.0

3.2

5.0

2.8

5.0

5_.5_

5.2

5.2

5.2

3.3

3.2

3.0

*3.2

3.2

3.0

5.5

3.2

2.7

2.7

3.2

3.2

5.2

5.0

2.8

2.9

2.6

2.9

2.8

2.6

2.6

2.7

95.2

5.01

185

Apr.

2.6

2.6

2.7

2.9

*2.0

2.7

2.3

2.2

1.6

1.4

1.4

1.4

1.2

172

1.2

1.4

1.5

1.4

1.4

*1.4

1.6

1.5

1.5

3.6

1.8

1.6

1.5

3.2

££2.4

60.3

2.01

120

May

1.7

1.2

1.0

4.4

20

24

18

17

7.1

6.9

7.3

12

5.6

3.5

2.5

*4.5

*0.5

9.2

9.5

20

*21

16

14

*12

18

29

18

24

17

14

15

590.7

12.6

775

June

11

9.0

8.0

6.5

6.0

6.0

6.0

6.0

6.0

6.5

7.0

6.0

5.0

4.5

*3.8

4.0

5.0

6.0

6.0

6.0

5.5

5.0

4.5

3.5

2.5

2.0

2.0

2.5

2.5

2.5

-

156.8

5.23

511

July

2.0

2.0

1.8

1.5

1.5

1.5

1.0

1.0

1.0

2.5

2.5

2.5

2.5

2.5

2.5

5.5

*3.9

5.9

3.8

3.8

3.8

5.9

5.8

5.8

3.6

2.6

1.4

1.4

1.5

1.4

1.2

75.6

2.44

150

Aug.

1.3

*1.4

3.4

3.2

2.9

3.0

3.4

3.5

3.2

*3.4

5.6

5.9

4.0

5.5

3.0

2.6

1.0

1.0

1.0

1.2

1.3

1.3

1.2

1.3

1.5

1.3

1.4

1.5

1.6

1.8

1.7

69.2

2.25

157

Sept.

1.6

1.4

1.2

1.2

1.2

1.2

1.5

1.4

1.5

1.6

1.6

*1.6

1.5

1.4

1.5

1.2

1.2

.8

.5

.4

.5

73

.3

.4

.4

.4

.5

.7

1.2

.9

-

30.5

1.02

60

Calendar year 1950: Max 51 Mln 0.7 Mean 5.55 Ac-ft 4,010

Water year 1950-51: Max 29 Mln 0.3 Mean 3.28 Ac-ft 2,370

* Discharge measurement made this day.

Note .--Stage-discharge relation affected by Ice Nov. 10, Dec. 24-28, Jan. 2, 6-22, Jan. 31 to 

7eb. 6. No gage-height record May 29 to July 16; discharge estimated on basis of 1 discharge measurement, weather records, and records for stations on nearby streams.
120 GUNNISON RIVER BASIN

Surface Creek near Cedaredge, Colo.

Location.--Lat 38°59', long. 107°51', In NW^NWi sec. 25, T. 12 S., R. 94 ¥., on left bank 

5 ft downstream from private "bridge, l| miles (revised) downstream from Caesar Creek, 

and 7 miles (revised) northeast of Cedaredge.

Drainage area.--28 sq mi, approximately.

Records available.--June 1939 to September 1951 (no winter records 1939-46).

Gage.--Water-stage recorder.

Average discharge.--5 years (1946-51), 42.6 cfs.

Extremes.--Maximum discharge during year, 192 cfs May 27 ({ 

daily, 3.0 cfs Feb. 1.

1939-51: Maximum discharge, 578 cfs May 12, 1941 (gage height, 3.62 ft), from rating 

curve extended above 300 cfs; minimum observed, 2.5 cfs Feb. 19, 1947 (discharge measurement), but may have been less during period of no gage-height record.

Fating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discnarge, In cubic feet per second)

0.8 5.0

1.0 10.5

1.2 20

1.3 2b

1.5 46

2.0 117

2.2 160

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

17

17

17

14

14

14

14

23

22

*22

22

28

26

16

16

14

14

14

13

33

35

36

34

463~6

18

14

13

12

11

11

636

20.5

1,260

Nov.

11

12

*bl2

13

13

11

11

b!2

bll

7.0

7 .5

9.0

11

7.5

7.0

6.5

8.0

9.0

9.0

9.0

9.0

8.0

7.0

6.5

6.5

6.0

675

6.5

6.5

6.5

-

2c 5 .5

S.8o

527

Dec.

8.0

8.0

3.0

8.0

9.0

8.0

7 .0

7.0

6.5

6.0

*G.O

6^2

6.2

b.2

6.2

6.0

5.8

5.8

5.8

5.8

Jan.

6.0

5.8

6.2

6.2

*6.4

5.5

4.0

3.5

tt

4.5

5.5

7.0

¥75

6.5

6.0

5.5

6.0

fe.O

6.5

6.5

6.5

5.5 6.5

5.8

6.0

6.2

6.2

6.2

6.5

7.0

6.8

6.5

204.4

6.59

405

7.0

7.0

6.5

6.5

6.5

6.5

6.5

6.5

5.5

185.4

5.98

368

Feb.

3.0

4.5

5 .5

6.0

6.5

7.0

6 .5

6 .5

6.0

6.0

6.5

7.0

6.5

6.5

6.0

6.5

6.5

7.0

7.0

7.0

6.5

6.0

7.0

7.0

7.0

6.5

6.5

6.0

_

_

-

176.5

6.30

350

Mar.

6.0

6.0

5.5

5.0

5^

6.0

6.5

6.5

7.0

7.0

7.0

6.5

6.5

5.5

*5.8

6.0

6.0

5.8

5.8

5.8

e.o

6.5

6.0

6.0

6.2

6.8

6.8

6.5

8.1 775-

7 .5

195.6

6.31

388

Apr.

7.5

7.5

7.5

*7.5

7.0

6.8

b6.5

6.5

b6.2

b5.8

b5.6

b6TS

b7.0

10

13

21

18

13

15

16

16

15

23

~U36

31

22

28

28

21

-

437.4

14. b

863

May

17

14

13

2T

34

57

64

70

64

79

92

85

66

56

53

*67

90

97

100

108

107

100

96

107

130

142

155

*T38

126

114

115

2,587

83.5

5,130

June

115

107

92

82

79

81

85

107

114

126

121

110

112

*105

100

100

105

105

100

95

90

90

90

85

80

75

75

70

70

65

-

2,831

94.4

5,620

July

65

65

62

62

62

65

64

62

67

7_4

71

61

59

54

50

47

46

*52

54

62

63

50

45

64

63

*58

54

40

39

24

*3t5

1,734

55.9

3,440

Aug.

*~S5 35

45

43

45

44

44

*37

37

42

42

40

40

*48

51

52

50

42

39

48

50

50

50

50

52

52

52

48

50

5445-

1,422

45.9

2,820

Sept.

44

44

43

4?

42

42

33

3S

3S

35

35

*37

37

37

35

29

28

22

21

22

22

18

16

16

16

14

12

T¥

?4

?6

-

887

29.6

1,760

Calendar year 1950: Max 167 Mln 3.9 Mean 41.2 Ac-ft 29,820

Water year 1950-51: Max 155 Mln 3.0 Mean 31.7 Ac-ft 22,940

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Nov. 10 to Dec. 9, Jan. 2 to Mar. 15 (stage-discharge relation affected by Ice most of period), June 15 to July 6, Aug. 21 to Sept. 4, Sept. 9-11; discharge estimated on 

basis of 2 discharge measurements, weather records, recorded range In stage, and records for nearby 

stations.
GDMISON RIVER BASIN 121 

Surface Creek at Cedaredge, Colo.

Location.--Lat 38°54' (revised), long. 107°55', in sec. 20, T. 13 S., R. 94 W., on right 

bank at Cedaredge, 500 ft east of State Highway 65,and 8^ miles upstream from mouth.

Drainage area.--43 sq mi, approximately.

Records available.--May 1917 to September 1927 and October 1933 to September 1951 in

reports or Ueological Survey. Kay 1919 to September 1950 in reports of State engineer.

aage.--Water-stage recorder and concrete control. Prior to June 8, 1917, staff gage at 

same site at datum 0.5 ft higher.

Extremes.--Maximum discharge during year, 132 cfs May 27 (gage height, 1.04 ft); minimum 

 Sally, 0.5 cfs Feb. 1.

1917-51: Maximum discharge, 1,190 cfs May 13, 1941 (gage height, 2.50 ft), from

rating curve extended above 640 cfs; no flow Sept. 25, 1939, and practically no flow

at times during some winters.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Natural flow of stream affected by diversions to and from nearby 

streams, storage reservoirs, diversions for irrigation, and return flow from irrigated 

areas.

year 1950-51, except periods of ice effect (gage 

et, and discharge, in cubic feet per second)

0.1 0.5 26

1.8 .7 51

6.0 1.0 120

Discharge, In cubic feet pe econd, water year October 1950 to September 1951

870

4.2 

2.8 

2.0

Apr. May

82

101

July Aug.

2313"

Sept.

Total 

Mean 

Ac-ft

220.5

7.11

121.5

4.05

241

1.73 

L06

Calendar year 1950: Max 112 

Water year 1950-51: Max 101

Mln '0. 

Mln 0.

Mean 20.8 

Mean 16.2

Ac-ft 15,040 

Ac-ft 11,700

* Discharge measurement made on this day.

b Stage-discharge relation affected by lee.

Note.--No gage-height record Oct. 9, 10, Nov. 15, lb, Dec. 12-15, Jan. 2 to Mar. 15, Apr. 1, 2 

(stage-discharge relptton affected by Ice during most of period); discharge estimated on the basis 

5 discharge measurements, weather records, and records for nearby stations.
GUNNISON RIVER BASIN

Surface Creek at Eckert, Colo.

Location.-Lat 38°50', long. 107°58<, in SE^ sec. 14, T. 14 S., R. 95 W. , on left bank

 U.b mile southwest of Eckert and H miles upstream from mouth.

Drainage area.--55 sq mi, approximately.

Records available.--April 1942 to September 1951 (discontinued).

Gage Water-stage recorder. Altitude of gage is 5,450 ft (by barometer). Prior to Sept. 

^Ti, 1944, staff gage, and Sept. 11, .1944, to Sept. 25, 1946, water-stage recorder at 

site 1,000 ft upstream at different datum.

Average discharge.--9 years, 4.52 cfs.

Extremes.-Maximum discharge during year, 53 cfs May 7 (gage height, 2.61 ft); minimum

Qal1942-51: C Maximum discharge observed, 466 cfs May 15, 1944 (gage height, 4.06 ft, 

site and datum then in use), from rating curve extended above 150 cfs; no flow Apr. 14, 

15, 1946.

Remarks.--Records fair. Natural flow of stream affected by diversions to and from nearby

 streams, storage reservoirs, and diversions for irrigation.

Rating tables, water year 1950-51, except period of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 23 

1.3 0.1

1.4

1.5

1.6

1.2 

2.2

1.3

1.4

1.5

1.6

pr. 24 to Sept. 30 

0.2 1.7

.6

1.4

2.8

5.0

8.0

2.0 16

2.4 38

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

0.9

1.0

1.1

1.2

1.3

1.1

1.1

1.2

1.3

*1.2

1.1

1.1

1.1

1.1

1.2

1.4

1.4

1.5

1.5

1.5

1.6

ITS

1.6

1.4

1.4

1.5

1.3

1.2

1.1

1.1

1.1

39.2

1.26

78

Nov.

.1

.1

* .0

.0

.0

1.0

.9

.9

.8

79

1.0

1.0

1.0

.9

.8

.8

.8

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

-

26.7

0.89

53

Dec.

0.8

.8

.8

**.

.8

.7

.7

.7

.7

.7

*.7

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.5

75

.5

.5

.5

.5

.5

.6

.6

19.8

0.64

39

Jan.

~76 0.6

.6

.6

*.6

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.5

.5

.5

.5

.5

.4

.4

*.4

.4

.4

.4

.4

.4

.4

.4

*b.4

14.6

0.47

29

Feb.

bO. 3

b.4

b.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

72

.2

.2

.2

.2

.2

_

_

-

8.5

0.30

17

Mar.

"72 0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.3

^

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.5

0.21

13

Apr.

0.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.2

.1

.1

.1

.2

.2

.2

16

.8

2.3

.5

2.6

3.0

.6

-

30.2

1.01

60

May

0.4

.4

.4

3.3

13

21

11

4.2

9.1

16

10

2.8

2.4

4.0

2.4

*10

18

12

8.3

9.3

8.1

5.0

5.0

12

7.1

5.0

7.7

5.9

7.4

*6.5

6.8

234.5

7.56

465

June

6.8

6.5

5.3

4.5

4.0

4.2

5.0

11 "T.O

4.7

4.7

4.7

5.6

4.0

2.6

5.9

5.9

6.8

5.3

5.3

4.7

3.8

3.8

2.2

1.6

4.5

3.4

2.0

3.4

4.2

-

140.4

4.68

278

July

0.6

1.8

1.0

1.4

.8

1.4

.5

.5

.4

75

.4

.5

.5

.5

.5

.6

*.6

2.7

.5

.8

.6

1.1

2.6

3.0

1.6

2.0

2.0

1.5

2.1

2.0

5.5

40.3

1.30

80

Aug.

10

13

4.2

2.6

4.0

2.8

1.8

1.4

2.2

*1.4

1.4

1.3

.5

.5

.5

.5

.5

.5

.5

.6

.6

.5

.4

.4

.4

.4

.5

.5

.5

3.5

.5

58.4

1.88

116

Sept,

H. b

.4

.6

.4

.4

.4

.4

.4

.4

.4

*.B

.8

1.2

iii

1.8

1.2

.6

.5

1.5

.8

.6

.6

.8

.6

.5

.5

.5

1.1

1.4

-

23.0

0.77

46

Calendar year 195O: Max 36 Mln 0.2 Mean 2.17 Ac-ft 1,570

Water year 1950-51: Max 21 Mln 0.1 Mean 1.76 Ac-ft 1,270

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice
GOTINISON RIVER BASIN L ' 

Ward Creek below Kiser Creek, near Cedaredge, Colo.

Location. Lat 38°53', long. 107°58', in SE£ sec. 26, T. 13 S., R. 95 W., on right bank

 lb ft downstream from highway bridge, 1 mile downstream from Kiser Creek,and 3 miles 

southwest of Cedaredge.

Drainage area. 58 sq mi, approximately.

Records available.--September 1944 to September 1951.

Gage.--Water-stage recorder.

Average discharge.--7 years, 8.08 cfs.

Extremes.--Maximum discharge during year, 21 cfs July 16 (gage height, 2.11 ft); minimum

 daily, 0.6 cfs Sept. 14-18.

1944-51: Maximum discharge, 168 cfs Apr. 21, 1948 (gage height, 3.68 ft), from 

rating curve extended above 65 cfs; no flow July 14-17, 1946.

Remarks.--Records fair except those for periods of ice effect, which are poor. Natural

 flow of stream affected by diversions to and from nearby streams, storage reservoirs,

diversions for irrigation, and return flow from irrigated areas.

Rating table, water year 195O-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.3

1.4

1.5

0.2 

.8

1.5

1.6

1.7

1.8

3.0 

5.0 

7.8

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

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.

2.2

2.2

2.2

2.2

2.2

2.2

2.1

2.1 

2.0

*2.1

2.0

1.8

ii§-

1.6

1.6

2.1 

2.1

2.0

1.8

2.0

2.0

2.0

1.8

1.8

2.0

2.0

2.1

2.1 

2.4

2.4

2.2

62.9

2.03

125

Nov.

2.4

2.2

*2.6

2.6

2.7

2.7

2.7

2.4 

b2 .2

bl.5

3.0

b3.0

b3.2

3.4

3.4

3.4 

3.6

3.8

4.4

3T¥

3.8

3.8

3.6

3.6

3.6

3.6

3.6

3.4

3.4

3.6

-

95.0

3.17

188

Dec.

3.8

b3.6

 b3.5

b4.4

b4.2

b3.3

b4.2

5.3 

5.6 573^

*5.3

.3

.3

.0

.O

.8 

.4

.2

.4

.6

.4

.2

.4

.6

.4

.2

.0

.0 

.4

.4

.4

138.9

4.48

276

Jan.

4.2

4.0

4.0

4.0

*4.0

b3.6

b3.0

b3.0 

b3.4

b3.5

3.6

3.6

b3.2

b3.2

3.4

3.4 

3.4

3.4

3.2

b2.9

b2.8

b3.2

*3.2

3.2

3.0

3.2

3.2

3.2 

3.0

2.6

*b2.5

103.1

3.33

204

Feb.

b2.0

b2.6

b3.4

b3.6

b3.8

b4.0

.0

.0 

.0

.4

.8

.3

.4

.0

b .2

b .0

.0

.8

.2

.2

.2

.4

.2

.2

.0

3.8

4.0

4.0

_

-

111.5

3.98

221

Mar.

3.8

4.0

3.8

3.8

kii.

4.0

4.0

4.4

4.2

4.0

3.8

*3.8

3.6

5.8

.8 

.6

.4

.4

.2

.0

.4

.O

.0

.0

.2

.2

-it

.8

2 .8

110.0

3.55

218

Apr.

2.8

2.2

1.6

1.4

1.5

*1.5

1.4

1.4

1.4

1.4

1.4

1.5

1.6

1.5

1.2 

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.4

1.3

1.2

1.2

ii

1.3

42.3

1.41

84

May

1.1

1.1

1.1

1.2

1.2

1.3

1.2

1.2 

1.2

1.2

1.2

1.2

1.1

1.1

1.2

*1.0

1.1

1.2

1.3

1.1

1.1

1.1

1.2

1.2

2.3

4.0

3.6

2.8

2.0

*1.8

1.6

46.0

1.48

91

June

1.4

1.8

1.6

1.8

2.0

1.6

1.8

1.6

1.8

2.2

ITT

1.8

1.8

2.0

1.5 

1.4

1.5

1.6.

1.4

1.4

1.4

1.5

1.8

1.8

1.6

1.5

1.5 

1.5

1.3

49.6

1.65

98

July

1.2

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.2 

1.4

1.2

1.0

1.1

1.1

1.0

fcf

*1.2

1.2

1.4

1.4

1.4

1.4

1.2

1.0

1.1

1.1

1.1 

.9"T?

!g

36.9

1.19

73

Aug.

0.9

*1 .1 i!o

.9

1.0

1.0

1.0

1.0

*1.0

1.0

1.1

1.1

1.2

1.2

1.2 

1.2

1.3

1 .4

TTT

1.4

1.4

1.4

1.3

1.1

1.0

1.1

1.1

1.3

1.2

.9

35.2

1.14

70

Sept.

0.9

.9

.9

.9

.7

.7

.7

.7

.7 

.7

.7

*.7

.7

.6

.6

.6 

.6

.5

.8

.7

.7

.7

.7

.7

.7

.8

.9

1.0 

1.2

1.1

22.9

0.76

45

Calendar year 1950 : Max 11 Min 1.2 Mean 3.89 Ac-ft 2,82o

Water year 1950-51 : Max 5.6 Mln 0.6 Mean 2.34 Ac-ft 1,690

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
124 GUNNISON RIVER BASIN

Red Mountain Creek near Ironton, Colo.

Location. Lat 37°57'45", long. 107°39<40", in N? sec. 29, T. 43 N., R, 7 W., on right 

bank 2 miles northeast of Ironton and 2 miles upstream from mouth.

Drainage area.--17.8 sq mi.

Records available.--August 1947 to September 1951.

Gage. Water-stage recorder. Datum of gage is 9,585.58 ft above mean sea level (Bureau 

of Reclamation bench mark).

Extremes. Maximum discharge during year, 229 cfs May 27 (gage height, 4.07 ft); minimum 

 dairy, 3.0 cfs Feb. 1.

1947-51: Maximum discharge, 331 cfs June 18, 1949; maximum gage height, 4.55 ft 

May 19, 1948; minimum daily discharge, that of Feb. 1, 1951.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are poor. Water is imported above station by Red Mountain ditch from Mineral 

Creek in San Juan River basin.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

oct. 1 to July 19 July 20 to Sept. 30

2.4

2.5

2.7 

3.0

6.5

9.0

17.5

36

3.2 

3.5

4.0

57

100

204

2.5 

2.7

3.0

8.5

16.5

36

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 *T3~

11

11

11

11

11

11

11

11

11

11

10

10

10

11

11

10

10

10

10

9.8

10

10

10

10

9.4

9.4

9.0

*9T4"

9.4

326.4

10.5

647

Nov.

9.4

9.0

8.5

9.4

9.0

9.0

9.8

9.0

8.2

6.5

7.4

8.0

8.3

8.5

8.8

8.5

8.5

8.5

10

T.4

9.8

8.8

8.8

9.2

8.5

8.0

8.0

8.2

8.2

8.0

-

259.2

8.64

514

Dec.

7.8

7.6

7.6

7.8

7.8

7.5

8.5

*STtf

7.8

7.0

7.2

7.8

8.0

7.5

8.0

8.2

7.5

7.2

7.5

7.2

7.0

6.5

srr

7.0

7.S

7.2

7.0

7.2

7.4

7.4

7.6

231.8

7.48

460

Jan.

7.2

TTT

7.0

7.0

6.6

*6.4

6.0

5.6

5.6

5.8

6.4

7.0

6.8

6.6

6.6

6.8

7.0

7.2

7.0

6.8

6.6

6.6

6.4

6.4

6.2

6.2

6.4

6.8

6.6

6.2

5.0

201.8

6.51

400

Feb.

3.0

OT

5.5

6.5

*7.0

8.0

8.2

8.4

8.6

8.8

9.0

B75" 9.2

8.0

8.0

8.5

9.0

9.0

8.8

8.6

8.8

9.0

9,0

8.8

8.6

*8.6

8.8

9.0

_

-

-

225.2

8.04

447

Mar.

8.8

8.4

8.2

B7S- 8.0

9.0

9.5

9.8

10.0

10

9.5

9.0

9.4

9.8

10

11

10

9.5

9.0

9.5

10

11

10

10

11

12

TT

10

9.0

10

9.5

300.4

9.69

596

Apr.

9.5

9.0

9.0

10

11

10

9.6

9.2

9.0

8.5

8.0 B7S9.0

11

13

14

15

16

*16

15

17

20

25

27

2T

26

24

25

25

*21

456.3

15.2

905

May

20

18

TS

23

33

41

49

52

52

55

62

69

58

46

40

37

40

46

57

73

73

55

52

53

82

126

169

*173

UJ

123

124

2,068

66.7

4,100

June

97

69

55

*80

86

100

120

134

136

124

100

104

118

106

122

146

T3S

134

138

134

130

120

110

104

98

98

96

92

88

76

-

3,267

109

6,480

July

66

67

S5

62

53

50

51

49

45

43

42

*40

37

35

34

34

33

33

37

36

36

36

34

28

25

27

27

28

31

28

25

1,238

39.9

2,460

Aug.

27

32

35

SB

28

24

22

22

*20

20

18

20

17

16

16

16

16

16

18

18

18

17

16

20

18

14

IT

16

25

23

21

638

20.6

1,270

Sept.

1815-

15

15

14

13

*14

14

13

13

13

13

12

12

12

12

12

12

11

11

16

14

10

9.6

IT

11

10

12

16

16

-

389.6

13.0

773

Calendar year 1950: Max 148 Mln 5.4 Mean 27.3 Ac-ft 19,800

Water year 1950-51: Max 173 Mln 3.0 Mean 26.3 Ac-ft 19,050

Peak discharge (base, 250 efs). No peak above base.

* Discharge measurement made on this day.

Note .--Stage-discharge relation affected by ice Nov. 4-6, 10-13, 16, 24, Dec. 1-3, 5, 6, 9-15, 

Dec"! TV to Jan. 2. No gage-height record Jan. 3 to Apr. 18 (stage-discharge relation affected by ice 

during most of period); discharge estimated on basis of 3 discharge measurements, weather records, 

and records for stations on nearby streams.
GUNNISON RIVER BASIN 125

East Fork Dallas Creek near Ridgway, Colo.

Location.--Lat 38°06', long. 107 0 49', in Nfi£ sec. 2, T. 44 N., R. 9 W., on left bank It 

miles upstream from Beaver Creek and 5 miles southwest of Ridgway.

Drainage area.--14.4 sq mi.

Records available.--October 1947 to September 1951.

Gage.--Water-stage recorder. Prior to Oct. 1, 1949, at site 130 ft downstream at datum 

 3~.0 ft lower.

Extremes.--Maximum discharge during year, 85 cfs June 16 (gage height, 3.46 ft); minimum 

daily not determined, occurred during period of no gage-height record.

1947-51: Maximum discharge, 297 cfs June 18, 1949 (gage height, 3.43 ft, site and 

datum then in use), from rating curve extended above 100 cfs; minimum daily not determined, occurred during period of no gage-height record.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. One small diversion aboi/e station which diverts water to Beaver Creek 

drainage for irrigation of about 50 acres of hay meadows.

Rating tables, water year 1950-51, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Ma Mar. 9 to Sept. 3O

2.5

2.7 13

3.0 

4.0

6.0

2.7 

2.9 

3.4

Discharge, in cubic feet per second, water year October 1950 to September 3951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

TT

10

11

11

10

10

10

*10

11

10

10

10

10

9.8

9.3

9.3

9.3

9.8

9.B

9.3

9.5

9.2

9.2

9.2

9.2

9.2

9.2

9.2

8.9

879

305.3

9.85

606

Nov.

8.9

9.2

9.2

9.2

8.9

8.9

9.2

9.2

*8.6

b6.0

b7.0

b8.0

b9.0

blO

11

12

13

12

11

9.2

8.9

8.6

8.0

8.0

8.0

8.0

8.0

8.0

8.1

8.2

-

271.3

9.04

538

Dec.

(*)

8.0

248.0

8.0

492

Jan.

(*)

6.0

(*)

(*)

186.0

6.0

369

Feb.

4.5

_

_

-

126.0

4.5

250

Mar.

3.7

377

3.7

3.7

3.7

3.7

3.7

3.8

*3.9

3.9

3.9

3.7

t3.9

4.0

379

3.9

3.8

3.8

3.7

13.9

4.0

3.9

3.8

3.8

3.9

4.0

3.9

3.8

3.8

3.8

4.0

118.7

I .83

235

Apr.

4.0

475

4.0

4.0

4.0

4.0

4.4

4.2

4.2

4.0

b4.0

4.4

*4.8

5.4

5.8

b.8

6 e'o3

6.0

6.3

6.6

7 .2

7.8

7.8

6.9

6.9

6.3

6.6

7.5

5.6

-

164.8

5.49

327

May

5.8

5.6

5.2

5.8

6.6

7.2

5.8

6.9

6.6

6.6

6.6

S.o

6.6

6.6

6.6

6.3

6.6

*6.9

6.9

7.2

7.8

7.8

8.1

8.1

8.1

8.7

16

31

*2¥

24

22

299.6

9.66

594

June

22

20

17

18

18

22

25

34

43

40

36

31

39

42

50

63

706"8

64

65

64,

68

59

56

55

58

59

6O

56

50

1,372

45.7

2,720

July

46

44

44

45

40

35

37

39

37

34

32

*40

45

43

43

44

42

41

42

11

45

41

33

27

25

30

30

32

33

29

24_

1,159

37.7

2,320

Calendar year 1950: Max 84 Mln - Mean 18.7 Ac-ft 13,550

Aug.

22

22

25

24

20

18

20

23

*23

22

21

20

19

18

18

18

17

T7

17

18

13

19

19

22

20

20

19

19

21

29

25

633

20.4

1,260

Sept.

22

20

19

18

17

*17

17

16

15

14

14

14

13

13

12

12

12

11

11

11

12

11

11

11

11

11

11

11

12

13

412

13.7

817

Water year 1950-51: Max 70 Mln - Mean 14.5 Ac-ft 10,530

Peak discharge (base, 120 cfs).--No peak above bas 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

Note.--Nc gage-height record Nov. 26 to Mar. 9 ME 

relation affected by ice during most of period); die

ments, weather rec rds, cords for stations on nearby streams.

: . 17-19, 24, 25, 29, Apr. 12 (stage-discharge 

:harge estimated on basis of 5 discharge measure-
Location.--Lat 38°19'50", long. 107°46'40", in NW^ sec. 17, T. 47 N., R. 8 W., on left 

bank 50 ft downstream from county highway bridge, a quarter of a mile north (revised) 

of Colona, and 1 mile upstream from Beaton Creek.

Drainage area.--437 sq mi.

Records available.--April 1903 to June 1906, April 1917 to November 1934, March 1935 to 

September 1915. Published as "near Colona" April 1904 to June 1906, April 1917 to November 1934 .

Gage.--Water-stage recorder. Datura of gage is 6,318.80 ft above mean sea level, datum of 

1929. Prior to Oct. 29, 1938, water-stage recorders, staff or chain gages at several 

sites within 5 miles of present site at various daturas. Oct. 29, 1938, to Aug. 2, 194?, 

at datum 2.00 ft higher, and Aug. 3, 1949, to Sept. 30, 1949, at datum 1 00 ft higher.

Average discharge.--35 years (1904-5, 1917-51), 284 cfs.

Extremes.--Maximum discharge during year, 996 cfs June 17 (gage height, 4.52 ft); minimum 

daily, 29 cfs Sept. 17-20.

1903-6, 1917-51: Maxim-urn daily discharge, 4,080 cfs June 13, 14, 1921; minimum daily, 

16 cfs Sept. 3, 1°13.

Remarks.--Records gooa except those for periods of ice effect, which are fair. Natural

flow of stream affected by diversions importing water from Cimarron Creek, Mineral Creek, 

and San Miguel River drainages, diversions for irrigation of about 19,000 acres, and 

return flow from irrigated areas.

Cooperation. --Nine discharge measurements 

Association. furnished by Uncompah?re Valley Water Users

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 28

2.5 36

2.8 75

3.C 125

3.5 355

4.0 680

4.5 1,040

May 29 to Sept. 30

2.6 29 3.5 250

2.8 48 4.0 580

3.0 75 4.5 980

3.2 125

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

54

54

48

51

47

47

51

51

*50

45

46

45

44

44

45

45

43

42

46

46

44

40

39

40

40

38

37

38

37

iS

40

1,373

44.3

2,720

Nov.

42

*42

44

44

45

45

45

45

*46

b_40

47

56

69

74

77

69

77

77

125

103

100

93

82

77

77

77

75

74

74

77

-

1,998

66.6

3,960

Dec.

84

75

64

84

79

56

*77

79

79

75

77

84

77

79

75

75

70

64

74

72

63

b60

b60

b65

74

72

69

68

75

b72

77

2,254

72.7

4,470

Jan.

74

b70

b70

b75

75

74

63

b60

b£5

*b60

b70

79

b78

b76

b74

b76

82 "5S

b80

b76

b72

b74

*b76

72

72

b70

b74

b80

b74

68

64

2,255

72.7

4,470

Feb.

*b36 bio"

b54

b70

b81

b82

b80

82

84

86

b90

b94

36

68

69

75

84

77

*77

69

69

74

75

72

70

62

68

64

_

_

-

2,038

72.8

4,040

Mar.

59

W

60

60

70

68

77

*79

84

77

75

63

72

72

72

77

68

68

64

72

72

77

72

70

79

100 ~86

86

70

*90

79

2,287

73.8

4,540

Apr.

77

72

70

84

90

77

68

66

60

60

48

5?

52

60

74

75

77

74

*77

*79

79

90

*103

*146 ~m

95

63

64

97

66

-

2,279

76.0

4,520

May

54

45

*38

T8

77

186

155

205

143

108

164

200

196

146

125

93

105

*125

152

295

295

230

255

210

225

428

617

*813

*"6C4

472

*458

7,267

234

14,410

June

406

274

220

220

215

334

400

486

486

458

394

364

437

*406

437

596

788 *552

660

692

700

668

564

556

479

532

532

500

465

458

-

14,411

480

28,580

July

388

346

340

322

328

268

256

245

220

188

164

*153

139

119

107

104

*ToT

110

132

176

304

322

235

210

188

164

188

240

230

188

180

6,661

215

13,210

Aug.

164

164

 225 340

215

176

156

128

*107

93

89

85

75

70

66

58

*53

46

43

17

55

58

55

59

75

63

63

63

70

98

101

3,180

103

6,310

Sept.

87

6?

62

58

55

3

* 2

Z

I

9

37

34

33

31

3C

31

2S

W

29

29

33

36

33

31

31

31

3C

31

38

46

1,19C

39.7

2,36C

Calendar year 1950: Max 862 Mln 27 Mean 164 Ac-ft 118,600

Water year 1950-51: Max 813 Mln 29 Mean 129 Ac-ft 93,590

Peak discharge (base, 1,250 efs). No peak above base. 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
127

Uncompahgre River at Delta, Colo.

Location.--Lat 38°45', long. 108°05', in SWi sec. 13, T. 15 S., R. 96 W., on right bank 

 100 ft upstream from bridge on State Highway 92, at west edge of Delta, and 1^ miles 

upstream from mouth.

Drainage area.--1,110 sq mi, approximately.

Records available.--April 1903 to September 1931, September 1938 to September 1951. (No 

winter records 1924 to 1931.)

Gage.--Water-stage recorder. Datum of gage is 4,929.92 ft above mean sea level, datum of 

T929. Prior to Apr. 26, 1946, water-stage recorders, chain or staff gages at several 

sites within 3j miles of present site at various daturns. Present datum used since October 1931.

Average discharge.--13 years (1938-51), 303 cfs.

Extremes.--Maximum discharge during year, 900 cfs May 28 (gage height, 4.30 ft); minimum 

daily, 40 cfs Mar. 24, 25.

1903-31, 1938-51: Maximum discharge recorded, 3,730 cfs May 5, 1941 (gage height, 

5.90 ft, site then in use), from rating curve extended above 1,900 cfs; minimum daily, 

7 cfs July 10-15, 17, 21, 24-28, 1910.

Remarks.--Records good except those for periods of ice effect, which are fair. Natural 

flow of stream affected by transbasin diversions, diversions for irrigation of about 

90,000 acres above station, and return flow from irrigated areas.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to June 16

1.8 

2.0 

2.5 

3.0 

4.0

196

367

750

June 17 to Sept. 30

2.2 95

2.5 165

3.0 330

3.7 610

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

Z7

28

29

30

31

Total

Mean

Ac-ft

Oct.

248

2T5

235

228

218

218

228

22Z

215

184

166

 135

133

160

169

193

206

206

184

187

169

128

122

115

T?5

125

1Z5

125

125

128

128

5,368

173

10,650

Nov.

130

122

*T35

141

149

Z02

Z45

283

245

b210

b220

b230

b250

b260

262

25C

262

266

297

504

238

222

199

202

209

193

193

187

181

187

-

6,474

216

1Z.840

Dec.

196

m

155

152

155

144

149

»152

146

138

135

138

133

122

1ZO

115

11Z

HZ

112

112

112

105

102

100 T0"2

107

105

112

102

105

115

3,940

127

7,810

Jan.

110

98

93

*100

110

95

b80

b70

54

84

95

88

84

b80

90

93

100

112

117

TC7

98

110

»110

110

110

98

98

110

110

b90

b75

3,009

97.1

5,970

Feb.

*b55

b£5

b75

84

112

128

133

135

135

133

135

b!50

bT2C

b9Z

95

105

112

117

»117

110

98

105

105

107

110

100

90

95

-

-

-

S.,018

108

5,990

Mar.

93

95

95

80

88

88

80

72

74

78

72

68

 64

63

63

59

44

45

45

45

48

50

45

48

40

102

158

169 146-

149

144

2,502

80.7

4,960

Apr.

133

90

86

66

*112

90

93

135

-53 146

80

70

122

86

74

84

74

57

7Z

 76

74

80

74

80

64

93

66

59

61

76

2,566

85.5

5,090

May

76

80

72

6466-

98

90

74

80

76

82

107

120

»120

125

107

102

125

144

190

255

196

181

 212

190

225

438

 636

5T7

300

235

5,383

174

10,680

June

»Z35

215

184

175

172

178

193

266

328

336

318

225

259

»300

297

398

606 302-

192

502

482

490

414

258

316

270

295

246

213

186

8,851

295

17,560

July

162

157

146

136

143

138

131

129

138

133

131

120

122

113

113

115

115

 113

111

TT5

198

250

2T5

171

149

131

133

141

154

149

138

4,442

143

8,810

Aug.

136

136

222

'2~42" 398

207

216

174

160

»146

133

129

124

124

117

115

115

115

113

T5?

186

146

133

133

136

133

131

133

143

168

174

4,867

157

9,650

Sept.

168

165

165

152

141

138

*141

138

133

133

138

131

T3S

152

157

168

180

186

198

195

192

267

302

312

309

292

284

270

312

526

5,983

199

11,870

Calendar year 1950: Max 522 Mln 90 Mean 193 Ac-ft 139,800

Water year 1950-51: Max 636 Mln 40 Mean 155 Ac-ft 111,900

Peak discharge (base, 900 efs). May 28 (12 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

a.) 900 cfs (4.50 ft).
128 GUNNISON RIVER BASIN

Roubideau Creek at mouth, near Delta, Colo.

Location. Lat 38°44', long. 108°09', in sec. 19, T. 15 S., R. 96 ¥., on left bank 90 ft 

upstream from railroad bridge a quarter of a mile upstream from mouth, and 5 miles west 

of Delta.

Drainage area.--245 sq mi.

Records available.--March 1939 to September 1951.

Sage.--Water-stage recorder. Datum of gage is 4,864.34 ft above mean sea level, datum of 

T929. Prior to Oct. 27, 1948, water-stage recorder at site a quarter of a mile upstream at datum 4.86 ft higher.

Average discharge.--12 years, 133 cfs.

Extremes.--Maximum discharge during year, 403 cfs May 12 (gage height, 2.88 ft); minimum 

observed, 11 cfs (discharge measurement) Feb. 1.

1939-51: Maximum discharge, 2,950 cfs Aug. 5, 1945 (gage height, 7.76 ft, site and 

datum then in use), from rating curve extended above 1,300 cfs; minimum, that of Feb. 

1, 1951.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Part of discharge is return flow from irrigated lands under lower end 

of Ironstone Canal from Uncompahgre River. Diversions for irrigation of a few hundred 

acres above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 6

l.o 12

1.2 25

1.5 55

1.8 98

2.1 158

May 7 to Sept. 30

146

375

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

a78

a70

a62

a64

a60

a60

a62

a62

a60

a58

a60

*a58

55

60

63

65

60

56

53

47

47

39

34

32

36

38

49

58

44

39

38

1,667

53.8

3,310

Nov.

34

35

*41

49

48

48

33

27

b25

b20

b40

51

47

49

51

45

45

45

50

53

51

49

47

51

49

54

55

58

56

56

-

1,362

45.4

2,700

Dec.

55

55

55

56

56

53

53

*55

51

47

48

47

48

48

47

44

38

37

37

34

32

30

28

29

30

31

35

35

36

39

43

1,332

43.0

2,640

Jan.

44

42

40

*38

43

38

b35

b40

b40

b35

b50

54

b52

b50

b50

b56

48

43

41

42

42

45

*44

38

39

49

53

55

51

b35

b25_

1,347

43.5

2,670

Feb.

*b!2

blS

b25

b35

b35

b38

b40

44

43

43

48

47

32

27

b28

b29

31

29

*29

26

31

27

24

25

27

25

24

23

_

-

-

862

30.8

1,710

Mar.

21

21

20

19

24

22

22

27

*28

30

31

31

31

32

30

28

31

35

37

36

31

25

17

24

23

28

30

33

43

31

33

874

28.2

1,730

Apr.

28

24

22

37

*45

35

29

27

34

2£

38

31

30

27

30

29

29

32

41

*48

48

59

65

82

85

85

87

78

102

105

-

1,432

47.7

2,840

May

88

84

74

69

92

156

212

292

262

274

298

340

283

*256

229

238

229

316

325

313

334

347

298

280

256

274

280

*286

247

200

180

7,412

239

14,700

June

165

139

114

100

90

77

74

72

70

74

84

80

86

*86

82

71

74

80

54

77

63

63

62

58

56

55

55

54

50

il

2,312

77.1

4,590

July

45

45

44

40

43

47

39

37

37

37

37

35

38

36

11

34

37

*36

35

52

59

57

50

52

47

43

39

40

47

54

54

1,330

42.9

2,640

Aug.

49

49

58

95

86

74

64

58

55

*50

48

43

43

42

39

37

39

40

39

45

49

58

51

49

49

46

47

50

59

64

58

1,633

52.7

3,240

Sept.

55

56

51

47

47

45

*44

50

50

50

57

55

66

71

77

82

93

88

99

104

118

108

100

93

78

70

78

88

110

100

-

2,230

74.3

4,420

Calendar year 1950 : Max 740 Mln 20 Mean 111 Ac-ft 80,410

Water year 1950-51 : Max 347 Min 12 Mean 65.2 Ac-ft 47,190

Peak discharge (base, 810 efs). No peak above base. 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, recorded range Ir 

In stage, and records for stations on nearby streams, 

b Stage-discharge relation affected by ice.
GDNNISON FIVER BASIN

Kahnah Creek near Whitewater, Colo.

Location. Lat 38°59" , long. 108°14', in sec. 34, T. 12 S., R. 97 W., on right bank at 

downstream side of private bridge, a quarter of a mile downstream from Intake of pipe 

line for Grand Junction water supply, and 17 miles east of Whitewater.

Drainage area.--55.0 sq mi.

Hecoras available. October 1917 to September 1921, August 1922 to September 1927, and 

octooer iaas to September 1951 in reports of Geological Survey. October 1917 to September 1921 and August 1922 to September 1951 in reports of State engineer.

Gage.--Water-stage recorder and concrete control. Prior to Sept; 30, 1932, staff gage,

 and Sept. 30, 1932, to Oct. 14, 1935, water-stage recorder at site 300 ft upstream at 

different datum.

Average discharge (combined flow). 33 years, 42.0 cfs.

extremes (comDinea now) .--Maximum discharge during year, 675 cfs May 27; minimum daily,

t).i CIS F6D. I.

1917-21, 1922-51: Maximum discharge, 1,630 cfs June 6, 1921 (gage height, 4.5 ft, 

site and datum then in use), from rating curve extended above 700 cfs; minimum daily, 

4.3 cfs Dec. 19, 1939.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Figures of flow diverted for Grand Junction water supply (obtained 

from several readings made each day on Cippoletti weir) and Raber ditch furnished by 

State engineer and added to monthly discnarge to give total flow of stream. Raber 

ditch diverts water for irrigation of about 60 acres below station. Regulation by a 

few small reservoirs above station.

Oct. 1 to Mar. 4

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second) 

(Shifting-control method used Aug. 24 to Sept. 6)

Mar. 5 to Sept. 23 Sept. 24-30

0.4 

.5

3.8

9.0

0.2 0.5 0.5 9.0 1.2 127 0.4

.3 1.5 .7' 28 1.5 235 .5

.4 4.0 I.G 80 1.7 330

Discharge, In cubic feet per second, water year October 1950 to September 1951

1.0 

2.4

Day

1

2

3

4

5

6

7

8

9

10

11

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.

2.4

1.8

2.4

2.4

*2.4

2.4

2.4

2.4

2.4

1.6

1.3

1.0

T70

1.0

1.0

1.3

1.0

1.3

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.3

1.6

1.6

2.1

5^

52.0

1.68

103

485

Nov.

3.5 *TTS1.6

1.3

1.3

1.3

1.8

2.4

1.3

b i§_

bl.O

bl.5

b2.2

2.7

2.4

b2.2

2.4

2.4

3.0

3.0

3.5

3.2

2.7

2.7

3.0

2.4

2.7

2.7

b2.4

2.7

-

67.5

2.25

134

379

Dec.

2.7

2.4

b2.2

b2.8

*3.5

b2.2

b2.6

b3.0

3.0

2.7

2.7

2.8

2.8

2.6

5.9

3.6

3.4

b3.2

b3.4

b3.2

b2.8

b2.4

b2.7

b3.2

b3.4

b3.2

b3.1

b3.1

b3.4

b3.6

b3^9

93.5

3.02

185

322

Jan.

b3.8

bTTg

b3.4

*b3.4

b3.8

b3.4

2.6

2.2

2.2

2.6

3.4

3.6

3.4

3.2

3.1

3.2

3.4

*3.2

3.0

2.5

2.5

2.6

3.1

3.7

3.4

3.5

3.7

3.8

3.4

2.6

l.J

97.2

3.14

193

280

Feb.

0.5 *774

3.0

3.4

4.0

3.9

4.0

4.2

4.5

4.8

5.2

5.4

FT?)

4.4

3.9

4.1

4.2

4.4

4.0

3.4

3.7

4.1

4.1

3.6

3.2

3.0

2.9

2.7

_

-

106.0

3.79

210

253

Mar.

2.2

2.4

2.4

2.5

*3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

4.0

4.0

4.0

4.0

3.5

4.0

5.5

5.0

3.2

3.2

2.8

2.0

?7o

2.2

2. "5

2.2

3.0

3.8

3.8

98.2

3.17

195

298

Apr.

3.8

*3.8

3.8

3.8

3.5

2.0

1.4

1.4

1.4

1.5

bl.3

bl.2

T75

2.5

2.8

3.0

3.0

3.0

3.5

3.5

5.0

5.0

5.0

T75- 6.5

5.0

4.5

4.0

5.5

5.0

101.7

3.39

202

402

May

4.5

4.0

 378 3.8

5.0

6.0

6.5

8.0

8.5

9.0

11

13

13

14

15

20

27

52

105

147

*147

130

125

130

204

305

315 '2T54"

135

*103

96

2,370.1

76.5

4,700

498

June

*92

75

74

65

52

49

50

57

67

54

47

44

47

47

44

42

41

39

36

36

35

29

29

27

26

25

24

22

20

.19

1,315

43.8

2,610

690

July

16

17

17

16

*13

12

6.0

 875- 5.0

9.9

9.9

9.0

9.9

11

14

17

20

22

"27 28

26

26

23

22

19

14

9.9

8.0

7.0

6.5

14

463.6

15.0

920

752

Aug.

14

7.5

11

13

13

11

9.9

8.0

9.0

9.9

9.5

7.0

*6.0

6.0

7.0

13

13

12

11

9.9

7.5

8.0

5.0

5.5

7.0

6.0

5.0

3.5 979"

2513"

296.1

9.55

587

650

Sept.

8.5

775

8.5

6.5

4.0

3.0

*2.2

2.0

1.8

2.2

2.2

2.2

2.0

1.8

1.4

1.2

1.3

2.5

3.0

3.5

4.0

3.0

2.0

*1.8

1.6

1.1

1.1

1.3

2.3

1.8

-

87.3

2.91

173

551

Adjusted for diversions

Mean

Cfsm

In.

Ac-fti

9.58

_

_

588

8.62

_

_

513

8.25

_

_

507

7.70

_

_

473

8.35

_

_

463

8.01

_

_

493

10.2

_

_

604

84.6

_

_

5,200

55.4

_

.

3,300

27.2

_

_

1,670

20.2

_

_

1,240

12.2

_

_

724

Calendar year 1950: 

Water year 1950-51:

Calendar year 1950: 

Water year 1950-51:

Max 262 

Max 315

Diversions

Ac-ft 6,080 

Ac-ft 5,560

MIn 0.6 

Min 0.5

Cfsm - 

Cfsm -

Mean 17.0 

Mean 14.1

Adjusted

Mean 25.4 

Mean 21.8

Ac-ft 

Ac-ft

Ac-ft 

Ac-ft

12,270 

10,210

18,340 

15,780

* Discharge measurement made on this day.

t Diversions above station, in acre-feet, for Grand Junction water supply and Raber ditch furnished 

by State engineer.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 12-17, Jan. 7 to Mar. 4 (stage-discharge relation affected by 

Ice during moat of period), Sept. 19-23j discharge estimated on basis of 2 discharge measurements, 

weather records, and records for stations on nearby streams.
130 GUMISON RIVER BASIN

Gunnison River near Grand Junction, Colo.

Location. Lat 39°02', long. 108°34', in NW£ sec. 35, T. 1 S., R. 1 W. Ute meridian, on left

 bank of river and right bank of canal half a mile downstream from point of diversion of 

Redlands power canal and 2 miles upstream from mouth and Grand Junction.

Drainage area.--8,020 sq mi, approximately.

Records available.--October 1894 to December 1895 (gage heights only), October 1896 to Sep-

 tember 1899,' October 1901 to September 1906 (published as "at Whitewater"), October 1916 

to September 1951.

Gage.--Water-stage recorders on river and canal. Datum of river gage is 4,555.14 ft above

 mean sea level, datum of 1929. Datum of canal gage is 4,567.14 ft above mean sea level, 

datum of 1929. Prior to Apr. 1, 1917, staff or chain gages at sites 1j miles downstream 

near mouth and 12 miles upstream at Whitewater at various datums. Apr. 1, 1917, to June 

25, 1934, staff gage, at present site and datum.

Average dlscharge_(river and power canal).--43 years (1896-99, 1901-6, 1916-51), 2,730 cfs.

Extremes (combined flow of river and power canal).--Maximum discharge during year, 9,950 

el's May 29; minimum daily, 380 el's sept. 13.

1896-99, 1901-6, 1916-51: Maximum discharge observed, 35,700 cfs May 23, 1920 (gage 

height, 14.95 ft), from rating curve extended above 21,400 cfs; minimum daily, 106cfs 

July 20, 1934.

Remarks.--Records good except those for periods of ice effect, which are fair. Combined 

now of river and Redlands power canal minus about 40 cfs diverted during irrigation 

season represents entire flow that enters Colorado River from Gunnison River Basin. 

Records include flow of power canal. Diversions for irrigation of about 233,000 acres 

above station. Records of chemical analyses and water temperatures for the water year 

1951 are given in Water-Supply Paper 1200.

Revisions.--W 509: Drainage area.

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

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.

777

735

744

7S1 

*748

719

6S8

644

650

S13

489

*524

5S6 

444

555

552

S51

540

SOI

5S8

574

560

585

572

548

524

504

522

528 

510

492

18,468

59S

36,630

Nov.

492

*472

466

486 

516

516

576

611

625

583

510

460

440 

540

669

655

904

952

1,080

1,370

1,440

1,320

1,290

1,220

1,150

1,100

1,100

1,100

1,080 

1,030

-

24,753

825

49,100

Dec.

1,010

1,140

1,170

1,OOO 

*976

1,040

982

907

1,080

1,240

1,190

1,060

1,040 

1,060

1,070

1,120

1,130

1,050

952

880

912

916

855

791

798

831

847

809

820 

810

800

3O,286

977

60,070

Jan.

790

800

810

800 

860

830

780

76O

*730

710

740

710

770 

780

790

720

800

600

800

750

760

*740

780

810

800

810

810

820

800

760

550

23,750

766

47,110

Feb.

500

*390

153

520 

510

560

870

910

940

1,050

1,090

1,140

1,180 

1,030

950

850

805

862

902

902

876

862

843

847

845

837

832

832

-

23,195

828

46,010

Mar.

832

823

809

815 

805

*809

846

858

880

911

914

893

844 

820

880

903

916

898

866

821

833

898

968

978

958

840

993

1,100

1.130 

1,010

949

27,798

897

55,140

Apr.

983

*983

880

805 

880

1,010

916

775

687

666

537

489

436 

48O

506

568

813

880

907

961

1,050

1,470

1,540

1,580

1,900

1,680

1,750

1,540

1,620 

2,080

-

31,372

1,046

62,230

May

1,940

1,550

1,290

1,110 

1,130

1,540

2,760

3,390

3,780

3,530

3,620

4,080

4,280 

4,O9O

3,570

*3,080

*3,010

3,390

3,750

4,400

5,270

5,580

5,120

5,020

5,140

5,430

6,890

*8,950

9,790 

9,120

7,840

133,440

4,305

264,700

June

7,480

7,080

5,780

4,780 

4,010

3,630

5,610

3,940

4,400

4,550

4,720

4,420

4,150 

4,480

4,680

5,070

5,870

7,760

7. 980

7,750

7,570

6,990

6,800

5,860

5,530

*5,210

5,220

4,890

4,570 

4,250

-

163,030

5,434

323,400

July

5,950

3,550

5,080

2,900 

2,780

2,63O

2,240

2,070

1,940

1,750

1,520

1,520

1,140 

1,020

925

849

819

803

740

758

1,230

1,150

1,550

1,090

929

816

686

657

 694 592 

812

46,710

1,507

92,650

Aug.

697

677

836

1,590 

1,960

1,600

1,500

1,270

1,070

912

728

611

*502 

588

529

470

470

461

446

524

657

88O

8§9

911

867

802

782

699

688 

1,050

855

26,519

855

52,600

Sept.

850

80f

710

651 

577

526

*50f

49C

49?

448

414

597

58C 

484

476

545

59e

635

651

66C

670

699

798

850

845

793

715

681

695 

804

-

18,850

628

57,590

Calendar year 195O: Max 7,920 Mln 418 Mean 1,844 Ac-ft 1,335,OOO

Water year 1950-51: Max 9,79O Mln 38O Mean 1,557 Ac-ft 1,127,000

Peak discharge (base, 1O,000 cfs). No peak above base.

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 11-14, Dec. 29 to Feb. 11, Feb. 14-16. No 

gage-height record for river station Oct. 10, Feb. 25 to Mar. 5, July 29, Aug. 2, 12, 19-21, 28, 29, 

Sept. 5, 9, 16, 22, 28, 29; no gage-height record for canal station Oct. 1, 8, 11, Feb. 2, 25, Mar. 

4, 11-14; discharge estimated on basis of 1 discharge measurement, weather records, records for Redlands power plant, and records for stations on nearby streams.
COLORADO RIVER MAIN STEM 131

Colorado River near Colorado-Utah State line

Location.--Lat 39°09', long. 108°57', in sec. 25, T. 10 S., R. 104 W., on right bank

4t miles downstream from Salt Creek, 6j miles southwest of Mack, Colo., and 7-J- miles upstream from Colorado-Utah State line.

Drainage area.--17,900 sq mi, approximately. 

Records available. May to September 1951. 

Gage.--Water-stage recorder. Altitude of gag is 4,370 ft (from river-profile map).

Extremes. Maximum discharge during period, 30,200 cfs June 23 (gage height, 11.24 ft); minimum daily, 1,900 cfs Sept. 14.

Remarks.--Records excellent except those for periods of no gage-height record, which are 

fair. Flow affected "by transmountain diversions, storage reservoirs, power developments, 

and diversions for irrigation. (Records include all return flow from irrigated areas).

Rating table, May to September 1951 (gage height, In feet, 

and discharge, in cubic feet per second)

3.2 1,910

3.5 2,240

4.0 2,920

5.0 5,000

6.0 7,800

8.0 15,000

10.0 24,000

11.3 30,500

Discharge, in cubic feet per second, May to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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. Mar. Apr. May

5,750 

5,380

4,280

5,660 

a3,700

a4,200

5,650 

7,500

*9,430

9,290

9,120

9,640

10,100

10,200

9,640

8,520

8,520

9,710

11,000

12,400

15,200

16,300

16,400

*16,500

17,200

17,300

19,400

24,200 

28,000

28,600

*25,800

382,590

12,340

June

25,500 

24, 200

20,500

17,500 

15,400

13,800

15,600 

14,300

15,500

15,900

16,200

15,700

14,400

14,600

15,600

16,800

19,400

25,800

26,200

26,600

28,400

28,800

28,700

24,800

22,000

21,100

21,500

20,800 

19,500

18,000

598,700

19.960

758,900 1,188,000

July

17.000

14*, 300

14,200 

13,800

12,800

11,300 

11,100

10,600

9,540

8,760

7,680

7,580

6,960

6,570

6,210

6,060

6,950

7,110

7,290

7,260

7,110

7,650

7,170

6,600

5,720

5,100

5,050 

5,200

*5,150

5,080

268,480

8,661

552,500

Aug.

4,800 

4,750

4,720

6,590 

7.410

6,560

5,780 

5,150

4,580

4,170

5,770

5,470

2,820

2,530

2,360

2,540

2,220

2,140

2,090

2.030

2,240

2,550

2,780

2,880

2,830

2,670

2,690

2,530 

5,210

4,680

5,570

112,110

5,616

222,400

Sept.

5,550 

5,370

3,060

2,700 

2,500

2,500

2,190 

2,110

2,040

al,950

al,950

al,950

al,950

a 1.900

a2,000

a2,000

a2,000

2,080

2,120

2,190

*2,200

2,160

2,240

2,510

2,300

2,220

2,120

2,090 

2,300

2,520

68,350

2,278

135,600

Calendar year : Max Min Mean Ac -ft 0

The period : Max - Min - Mean - Ae-ft 2,837,000

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of station near Cameo.
132 DOLORES RIVER BASIN

Location. Lat 37°46', long. 108°06', in NW^ s,ec . 5, T. 40 N. , R. 11 W. , a quarter of a 

mile downstream from Eagle Creek and 1.3 miles southwest of Dunton.

Drainage area. 39.4 sq mi.

Records available.--June 1941 to September 1943 (no winter records), discontinued.

Gage. Water-stage recorder. Altitude of gage is 8,860 ft (by barometer).

Extremes.--1941-43: Maximum discharge, 705 cfs May 26, 1942 (gage height, 3.20 ft), from 

 rating curve extended above 270 cfs; minimum daily, 2.0 cfs Nov. 21, 1942, but may have 

been less during periods of no gage-height record.

Remarks.--A few small diversions for irrigation above station.

Revisions.--Revised figures of discharge, in cubic feet per second, for April 1943, superseeling those published in Water-Supply Paper 979, are given herewith:

118

us

124

Apr. 23 150 

137 

150 

150 

178 

178 

2O9 

209

of records fc

Month Cfs -days Maximum Minimum Mean Runoff in 

acre-fee t
DOLORES RIVER BASIN 133 

Dolores River at Dolores, Colo.

Location. Lat 3-7°28', long. 108°30', in sec. 16 (revised),!. 37 N., R. 15 W., on left bank

 abO' i't upstream from bridge on State Highway 184 in Dolores and a quarter of a mile upstream from Lost Canyon Creek.

Drainage area.--556 sq mi.

Records available.--May 1922 to September 1927 (monthly discharge) and October 1933 to Sep-

 tember 19bl in reports of Geological Survey. April 1922 to September 1951 in reports 

of State engineer.

Gage.--Water-stage recorder at present site since Mar. 27, 1934. Datum of gage is 6,924.91 

ft above mean sea level, datum of 192a. Prior to Oct. 1, 1925, chain gage, and Oct. 1, 

1925, to Mar. 26, 1934, water-stage recorder, on downstream side of bridge 250 ft 

downstream at same datum'.

Average discharge.--30 years (1921-51), 472 cfs.

Extremes. Maximum discharge during year, 2,520 cfs May 28 (gage height, 5.04 ft); minimum

 dally, 17 cfs Dec. 3.

1922-51: Maximum discharge, 8,140 cfs June 19, 1949 (gage height, 7.04 ft), from 

rating curve extended above 5,800 cfs; maximum gage height, 7.72 ft May 14, 1941; minimum daily discharge, 16 cfs Dec. 24, 1939.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, 

which are fair. Diversions above station for irrigation.

Revisions (water years).--W 859: 1937. W 929: Drainage area.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

.e-ft

Oct.

61

74

68

61

58

57

54

50

50

48

*50

82

84

77

77

77

76

71

69

68

68

68

68

64

61

61

60

58

58

57

57

1,992

64.3

3,950

Nov.

57

57

57

54

52

52

52

45

36

M

21

25

*35

40

43

29

37

50

52

63

54

47

39

37

39

41

39

35

36

35

1,277

42.6

2,530

Dec.

54

40

 24 17

35

20

27

54

68

51

54

64

60

*68

J59

634 1?

21

30

44

32

22

25

39

44

48

42

42

45

38

b40

1,327

42.8

2,630

Jan.

42

39

37

39

*41

37

33

36

39

37

38

40

41

39

36

38

38

39

38

37

35

35

36

*33

32

33

35

37

33

27

28

1,128

36.4

2,240

Feb.

25

29

33

36

34

33

32

33

*34

35

39

44

40

34

36

38

42

43

43

39

40

42

45

42

43

43

43

40

-

_

-

1,060

37.9

2,100

Mar.

36

44

38

40

42

*t>40

b45

b52

t>60

b80

77

64

79

90

92

85

77

74

64

66

69

79

*75

69

79

100

119

102

85

96

90^

2,208

71.2

4,380

Apr.

75

71

83

106

109

96

92

98

94

106

86

96

100

122

155

176

*213

216

210

213

213

213

264

372

317

326

279

264

313

279

5,357

179

10,630

May

232

210

192

*291

509

669

649

688

656

708

720

775

720

580

*521

481

470

550

593

740

882

782

688

669

890

1,260

1,670

*2,060

1,810

1,590

1,550

24,805

800

49,200

June

1,220

926

*747

754

694

775

842

935

935

899

810

761

754

690

678

754

899

935

890

834

775

690

589

528

447

409

369

345

314

280

21,478

716

42,600

July

"225 246

198

187

176

159

145

145

159

152

*150

141

154

164

148

150

150

150

135

137

141

150

137

137

132

137

139

139

137

*128

T39

4,782

154

9,480

Aug.

152

179

206

T74

164

132

114

118

114

116

110

104

97

92

85

82

78

75

71

65

*65

68

65

65

78

64

54

52

70

157

*157

3,223

104

6,390

Sept.

~92 114

78

67

58

42

38

39

39

36

*36

32

30

29

28

27

26

24 "24

25

27

29

29

27

27

26

24

*25

33

76

-

1,207

40.2

2,390

Calendar year 1950: Max 1,750 Mln 17 Mean 316 Ac-ft 229,000

Water year 1950-51 : Max 2,060 Mln 17 Mean 191 Ac-ft 138,500

ea scarge ase, 1,80 es.--May 

Discharge measurement made on this day . b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 2 to Mar. 5 (stage-discharge relation affect 

f period); discharge estimated on basis of 3 discharge measurements, weather re 

for or nearby nearby stations. stations. 

256684 O - 53 - 10

ed by ice during most 

cords, and records
134 DOLORES RIVER BASIN

Dolores River near McPhee, Colo.

Location. Lat 37°34', long. 108°34', in NEi sec. 12, T. 38 N., R. 16 W., on right bank 0.8 

mile downstream from Beaver Creek and 4| miles northwest of McPhee.

Drainage area.--793 sq mi.

Records available.--October 1938 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 6,666.45 ft above mean sea level, unadjusted.

Average discharge.--13 years, 378 cfs.

Extremes.--Maximum discharge during year, 1,890 cfs May 28 (gage height, 3.91 ft); minimum 

daily, 0.2 cfs Sept. 12.

1938-51: Maximum discharge, 8,650 cfs Oct. 13, 1941 (gage height, 7.58 ft), from 

rating curve extended above 5,900 cfs; minimum daily, that of Sept. 12, 1951.

Remarks.--Records excellent above 60 cfs and fair below. Diversions for irrigation of 400 

acres above station and 37,000 acres in Montezuma Valley in the San Juan basin.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

2.5

91

155

240

560

3.0 

3.5 

4.0

970

1,450

1,990

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

-575 6.0

5.5

4.5

4.0

3.6

3.2

2.6

2.6

2.4

*2.8

2.8

3.2

4.5

4.0

4.0

4.0

3.8

3.8

3.6

3.6

3.2

3.4

3.6

3.8

3.6

3.6

3.6 

3.6

3.6

3.6

115.6

3.73

229

Nov.

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

*3.4

2.8

3.6

4.5

376

3.4

3.2

3.2

3.2

2.8

2.6

276

2.0

3.0

3.0

3.0 

4.0

3.2

103.5

3.45

205

Dec.

2.8

372

23

27

36

53

44

53

53

44

38

24

15

*15

16

16

12

15

12

19

27

14

6.0

8.5

b38

b52

45

36 

24

44

47

862.5

27.8

1,710

Jan.

45

23

33

38

*45

44

41

39

42

41

39

41

44

43

41

37

33

36

36

35

32

30

28

*26

26

26

26

29

25

24

25

1,073

34.6

2,130

Feb.

24

27

30

38

43

42

41

42

*45

46

48

50

51

41

37

39

46

50

49

47

42

45

46

46

46

45

49

45

_

-

1,200

42.9

2,380

Mar.

43

47

50

49

56

*62

59

44

34

33

12

16

15

16

30

39

33

32

17

15

23

57

*38

34

53

57

45

23

12

12

11

1,067

34.4

2,120

Apr.

9.0

8.0

15

22

14

15

16

15

13

13

8.5

7.0

3.8

1.6

T7T

*2.0

3.0

3.4

3.6

8.5

9.0

10

12

32

19

12

12

11 

13

27

340.1

11.3

675

May

22

15

34

*61

187

378

321

352

275

285

296

333

280

144

*111

91

63

138

187

280

458

390

275

240

416

856

1,210

1,580 

*1,410

1,180

1,130

12,990

419

25,780

June

824

508

315

309

250

309

384

472

486

458

378

309

296

218

*208

260

410

472

437

390

327

226

130

75

19

16

13

12 

T2

12

8,535

284

16,930

July

11

11

11

12

TT

10

7.5

7.0

6.5

6.5

*6.5

6.5

6.0

5.0

3.8

3.6

3.4

3.2

3.0

2.8

2.8

2.8

"470 2.6

6.0

5.5

6.0

7.0 

7.5

*7.0

8.5

197.0

6.35

391

Aug.

13

12

~27 100

12

8.5

8.0

6.0

6.0

6.0

6.0

6.0

5.5

6.0

3.0

2.4

2.8

1.6

1.4

T75

*1.8

1.8

1.7

2.6

2.8

2.4

3.0

2.6 

2.6

23

8.0

287.0

9.26

569

Sept.

3.6

2.2

1.7

1.4

.6

.5

.5

.5

.4

.3

*.3

.2

.5

.4

.4

.6

.6

.6

.6

.5

.4

.4

.5

.5

.4

.4

.4

*.4 

.8

1.6

22.2

0.74

44

Calendar year 1950: Max 2,280 Mln 1.5 Mean 185 Ac-ft 134,300

Water year 1950-51 : Max 1,580 Min 0.2 Mean 73.4 Ac-ft 53,160

Peak discharge (base, 1,900 cfs). No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 30, Jan. 3 to Mar. 6 (stage-discharge relation affected by ice 

during most of period); discharge estimated on basis of 4 discharge measurments, weather records, 

and records for nearby stations.
DOLORES RIVER BASIN 135

Twomile Creek near La Sal, Utah

Location. Lat 38°21', long. 109°07', in sea. 24, T. 28 S., R. 25 E., on left bank just 

downstream from Pole Springs Canyon, 2 miles upstream from mouth, and 8f miles northeast 

of La Sal.

Drainage area.--21.9 sq mi.

Records available.--August 1944 to September 1951 (discontinued).

Gage.--Water-stage recorder.

Average discharge.--? years, 2.22 cfs.

Extremes.--Maximum discharge during year, 2.6 cfs May 28 (gage height, 1.99 ft); minimum 

daily, 0.3 cfs on many days.

1944-51: Maximum discharge, 96 cfs May 1, 1945 (gage height, 3.07 ft), from rating 

curve extended above 57 cfs; minimum daily, 0.1 cfs July 1-8, July 10 to Sept. 17, 1946.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Two diversions for irrigation of hay meadows above station. One diversion above station which diverts water to West Paradox Creek drainage below Buckeye 

Reservoir.

Rating table, water year 1950-51, except period of loe effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.9

2.0

0.2 

0.9

2.8

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

12.4

0.40

25

Nov.

0.4

.4

.4

.4

.4

*.4

.4

.4

.4

b_.j5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

75

.5

.5

.5

.5

.5

.4

.4

.5

-

12.7

0.42

25

Dec.

0.5

.4

74

.5

*.5

b.5

.5

.5

.5

.5

.6

76

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

15.8

0.51

31

Jan.

0.5

b75

.6

.6

.5

.5

.5

.5

*.5

.5

.5

.5

.5

.5

.5

.6

.6

.5

.5

.5

.5

.6

.6

.6

.6

.7

77

.6

.6

*.6

.5

17.0

0.55

31

Feb.

~74 0.3

.5

.5

.5

.5

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

.5

.5

.5

.6

.6

.5

.5

.5

.4

.4

.4

_

-

-

14.1

0.50

28

Mar.

0.4

.4

.4

.4

.5

.6

.7

*.7

.7

.5

.5

.8

.5

.6

.7

.8

.7

b.5

.6

.6

.8

1.1

.7

.8

.9

1.3

T7l

.9

.7

.9

.8

21.6

0.70

43

Apr.

0.7

.7

.9

1.3

1.3

.9

1.1

1.1

.9

1.3

*.8

.8

.8

1.3

1.3

.9

.8

*.7

.5

.5

.5

.6

.5

.5

.5

.4

74

.4

.5

.6

-

23.5

0.78

47

May

~76 0.6

.6

.8

1.7

1.3

.9

.8

.7

.7

.7

.7

.6

.6

1.1

*1.5

1.5

1.5

1.3

1.3

1.1

1.3

1.7

1.7

1.5

1.3

1.8

2.2

T75

1.5

1.5

36.9

1.19

73

June

0.9 ~79

.9

.8

.7

.6

.6

.7

.5

.5

*.5

.5

.5

.4

.4

.4

.4

.4

.3

.3

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

-

14.9

0.50

30

July

0.

.

*. :

12.1

0.39

24

Aug.

0.4 ~74

.4

.4

.4

*.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

75

.5

.5

.5

.5

13.0

0.42

26

Sept.

~75 0.5

.5

*.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

-

11.9

0.40

24

Calendar year 1950: Max 27 Min 0.2 Mean 1.81 Ac -ft 1,310

Water year 1950-51: Max 2.2 Mln 0.3 Mean 0.56 Ao-ft 410

Peak discharge (base, 10 cfs). Ho peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note_.--No gage-height record Jan. 6 to Mar. 7 (stage-discharge relation affected by loe during most 

of period); discharge estimated on basis of 1 discharge measurement at station, 1 discharge measurement made 3 miles downstream, weather records, and records for stations on nearby streams.
136 DOLORES RIVER BASIN

Buckeye Reservoir Outlet near Paradox, Colo.

Location. Lat 38°26', long. 109°03', in sec. 11, T. 48 N., R. 20 W., on right bank 700 ft

 downstream from Buckeye Reservoir and 6f miles northwest of Paradox.

Records available.--October 1945 to September 1951 (discontinued). Records for monthly

 acre-feet, Hay to September 1945, published in rfater-Supply Paper 1039, with record for 

West Paradox Creek near Paradox.

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 7,550 ft (by barometer) .

Average discharge. 6 years, 6.60 cfs.

Extremes.--Maximum daily discharge during year, 16 cfs May 13-17. No flow Oct. 24, 1950, 

to Apr. 4, 1951.

1945-51: Maximum daily discharge, 59 cfs June 16-27, 1949. No flow at times during 

most winters.

Remarks.--Records excellent. Flow is all diverted from Deep and Geyser Creeks in Roc 

Creek basin and regulated by Buckeye Reservoir (capacity, 3,000 acre-ft).

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

0 0.5 4.5

.5 .7 8.0

1.0 1.0 15

2.0 1.1 17.6

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.0

3.8

3.8

3.8

*3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

2.5

1.0

1.0

1.0

.4

0

0

0

0

0

0

0

0

73.1

2.36

145

Nov.

C)

-

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

0

1.5

2.8

2.8

2.7

2.7

2.7

*2.

2.

2.

2.

2.

2.8

2.8

2.8

3.0

3.0

3.0

3.0

3.0

3.1

278

2.

2.

2.

2.

2.

-

71.5

2.38

142

May

2.7

3.6

4.5

5.2

5.4

5.0

5.0

5.0

5.0

4.7

4.5

12

16

16

16

*16

16

10

6.9

6.9

6.9

6.6

6.2

6.2

6.9

7.6

7.5

7.6

7.8

8.0

8.0

245.7

7.93

487

June

7.3

6.7

6.7

6.7

6.7

6.7

6.7

7.5

8.2

8.2

*8 . 2

8.0

8.0

8.0

6.6

5.5

5.4

575

6.7

7.6

7.6

7.6

7.6

7.6

7.6

9.5

11

11

9.3

8.7

-

228.4

7.61

453

July

8.9

8.9

9.3

9.5

9.5

10

11

11

*10

12

13

13

11

10

9.5

9.1

9.1

8.7

8.7

7.8

7.5

7.1

6.9

6.4

5.7

5.7

6.4

6.6

6.6

6.4

5.4

270.7

8.73

537

Aug.

4.0

4.1

4.5

5.0

5.0

*5.0

5.0

5.2

5.4

3.8

3.1

3.0

3.0

3.3

3.6

3.5

3.2

2.8

2.7

2.7

2.7

2.7

2.6

2.6

2.6

2.6

2.6

2.6

2.6

3.0

3.8

108.3

3.49

215

Sept.

4.7

4.7

4.5

*4.7

4.7

4.7

4.7

4.5

4.5

4.4

4.4

4.2

4.2

4.1

4.1

4.0

4.0

3.8

3.7

3.7

3.5

3.2

3.2

3.1

3.1

3.1

3.1

i*0

3.0

3.0

-

117.6

3.92

233

Calendar year 1950: Max 37 Min 0 Mean 7.20 Ac-ft 5,210

Water year 1950-51: Max 16 Min 0 Mean 3.06 Ac-ft 2,210

Discharge measures nade on this day.
DOLORES RIVER BASIN

West Paradox Creek near Paradox, Colo.

Location. Lat 38°23'00", long. 108°59'45", in NWfeW^ sec. 29, T. 48 N., R. 19 W. , on left 

bank at La Sal National Forest boundary and 2 miles northwest of Paradox.

Drainage area. --25 sq mi, approximately.

Records available. --August 1944 to September 1951.

Gage. --Water-stage recorder. Altitude of gage is 5,590 ft (from topographic map).

Average discharge.--? years, 7.46 cfs.

Extremes . --Maximum discharge during year, 18 cfs May 15 (gage height, 2.15 ft); minimum 

daily, 0.1 cfs Feb. 25, Mar. 18, 19.

1944-51: Maximum discharge not determined, occurred Sept. 27, 1948 (gage height, 

5.96 ft); minimum daily, 0.1 cfs Mar. 1-13, 1946, Jan. 28, 29, Dec. 2-10, 1948, Feb. 25, 

Mar. 18, 19, 1951.

Remarks . --Records fair. Diversions from Geyser and Deep Creeks in Roc Creek basin are 

stored in Buckeye Reservoir (capacity, 3,000 acre-ft) and released down West Paradox 

Creek for irrigation below station (see p. 148 ). One diversion for irrigation of about 

50 acres below station. One diversion imports water from Twomile Creek to West Paradox 

Creek "below Buckeye Reservoir.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.7

1.8

1.9

2.6 

4.5 

7.0

1.4

1.5

1.6

1.7

Oct. 20 to Sept. 30 

0

.16

.8

2.0

2.0 

2.2

4.0

10.5

20

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

4.5

4.3

4.5

5.0

*5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.2

5.2

5.2

5.2

5.0

1.4

1.4

1.4

1.4

.4

.4

.4

.5

.5

.5

.5

.5

103.4

3.34

205

Nov.

0.4

.4

.4

.4

.4

.4

*.4

.4

.4

b.5

.6

.6

.6

.7

.7

.5

.7

.7

1.2

.7

.7

.7

.7

.7

.7

.7

.7

.6

.6 

.6

17.6

0.59

35

Dec.

0.8

.5

.5

.8

*.3

.3

.4

.3

.2

.2

.2

.2

.3

.3

.3

.3

.2

.3

.3

.2

.2

.2

.3

.3

.3

.3

.2

.3

.4

.4 

.4

10.2

0.33

20

Jan.

0.3

b.3

.4

.3

JB.

b.2

b.3

*b.3

b.3

b.3

b.4

.4

.5

.3

.4

.6

.6

.6

.4

.3

.2

*b.3

b.4

.6

.5

.5

.5

.4

.6

.4

12.2

0.39

24

Feb.

0.3

.3

.4

.5

.5

.4

.4

.4

.4

.4

.4

.4

.3

.2

.2

.3

.3

.2

.2

.2

.2

.2

.2

.2

_a

.2

.2

.2

-

-

8.2

0.29

16

Mar.

0.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

6.0

0.19

12

Apr.

0.2

.2

.2

1.0

1.6

2.4

2.4

2.8

3.0

3.0

*3.2

5.4

3.4

3.4

3.4

3.6

3.4

*3.4

3.4

3.6

3.8

3.6

3.8

3.8

3.6

3.4

3.4

3.2

3.6

-

86.8

2.89

172

May

3.4

3.8

5.2

4.9

5.5

5.2

5.2

5.2

5.2

4.9

4.6

8.4

16

16

16

16

*16

11

6.7

6.7

6.

6.

6.

6.

6.

7.

7.

7.

7.7

7.7

243.8

7.86

484

June

7.

6.

6.

6.

6.

6.

6.

7.0

8.0

8.0

8.0

*8.0

8.0

8.0

7.0

£.5

5.5

5.5

6.4

7.7

7.4

7.4

7.4

7.4

7.4

8.8

9.8

9.8

9.1

-

222.8

7.43

442

July

8.4

8.4

8.4

8.8

8.4

8.8

9.4

9.4

9.4

*11

12

11

10

9.1

8.8

8.0

8.0

8.0

8.0

7.7

7.0

6.7

6.7

5.8

5.5

5.8

6.1

6.4

6.4

5.8

249.8

8.04

494

Aug.

4.3

4.3

4.9

5.2

5.2

5.2

*5.2

5.2

5.5

4.0

3.2

3.2

3.0

3.2

3.8

3.8

3.6

3.2

3.0

3.4

3.2

3.2

3.0

2.8

2.8

2.8

3.0

3.0

3.6

3.8

117.0

3.77

232

Sept.

5^2.

5.2

4.9

4.9

*4.6

4.6

4.3

4.3

4.0

4.0

4.0

4.0

4.0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.6

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

-

118.8

3.96

236

Calendar year 1950 : Max 33 Mln 0.2 Mean 7.22 Ac -ft 5,220

Water year 1950-51 : Max 16 Min 0.1 Mean 3.28 Ac-ft 2,370

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
138 DOLORES RIVER BASIN

West Paradox Creek near Bedrock, Colo.

Location. Lat 38°19'45", long. 108°52 I 15", in SE^NE^ sec. 17, T. 47 N., R. 18 W., on 

right bank 1 mile upstream from mouth and l| miles (revised) northeast of Bedrock.

Records available.--August 1944 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 4,940 ft (from topographic map).

Average discharge.--7 years, 4.06 ofs.

Extremes.--Maximum discharge during year, 19 cfs Nov. 19 (gage height, 4.76 ft); maximum 

gage height, 5.14 ft Jan. 8 (ice jam); no flow for many days.

1944-51: Maximum discharge not determined, occurred Aug. 27, 1945; maximum gage 

height, 5.92 ft Aug. 8, 1949; no flow at times in 1946, 1947, 1948, 1951.

Remarks.--Records poor. Natural flow of stream affected by water imported from Roc Creek 

EasTn through Buckeye Reservoir (see p.D36 ), diversions for irrigation of about 3,000 

acres, and return flow from irrigated areas.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Jan. 29, 30, June 1 to July 7)

3.7

3.9 .2

4.0 .6

4.2 3.5 

4.4 8.0 

4.6

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.3

.3

.3

*.4

.4

.5

.5

.6

.6

.6

.6

.3

.5

.4

.4

.5

.5

.6

.6

.6

.6

.7

.6

1.3

4.9

4.7

2.0

1.2

1.2

.3

27.2

0.88

54

Nov.

0.3

.3

.3

.3

.4

.5

*.6

.3

bti

b.3

b.9

2.2

6.5

5.8

8.3

8.0

8.3

11

9.5

8.3

8.3

7.5

6.5

5.8

6.2

5.3

4.7

4.3

4.3

-

125.4

4.18

249

Dec.

4.7

4.3

.7

.O

* .8

.2

t g

'.BQ

.2

.2

.0

.0

.2

.2

.2

.2

.8

.2

.2

.2

.0

b .0

.2

.2

b7.2

b6.8

b6.8

b6.8

b6.2

6.5

217.4

7.01

431

Jan.

7.0

8.6

9.5

9.6

9^8

9.2

b8.5

*b8.3

b8.2

b8.1

8.0

8.0

b8.0

b8.0

b7.8

b8.3

8.6

7.8

8.0

8.6

b8.4

*8.3

7.5

7.0

6.5

5.5

7.0

6.5

*8.9

6.0

b5.0

244.7

7.89

485

Feb.

b3.0

b5.0

b7.5

b9.0

b9.8

9.8

9.5

8.3

8.3

7.5

7.8

8.3

8.0

7.0

7.2

7.0

7.0

7.0

7.8

7.2

7.0

6.8

4.9

3.9

3.0

2.6

3J4

_

-

186.5

6.66

370

Mar.

3.2

2.9

3.0

5.1

3.9

3.2

*2.8

1.4

.2

.7

.3

.2

.4

.0

.4

.3

.2

.2

.2

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

37.2

1.20

74

Apr.

0.2

.2

.2

.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

-

6.2

0.21

12

May

'".2 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

.1

.1

.1

.1

5.8

0.19

12

June

0.1

.1

*]

.1

.2

.2

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

-

4.3

0.14

8.5

July

0.2

.2

.2

.1

.1

.1

0

0

o

*0

o

0

0

0

.1

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.1

0.04

2.2

Aug.

0

0

.1 o 

0

0

*0

0

0

o

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

0.3

0.01

0.6

Sept.

0.1

~Q0

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 195O: Max 18 Mln 0.1 Mean 3.13 Ac -ft 2,270

Water year 1950-51: Max 11 Mln 0 Mean 2.35 Ac-ft 1,700

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
DOLORES RIVER BASIN 

Pall Creek near Fall Creek, Colo.

139

Location. Lat 37°58', long. 108°01', in sec. 24, T. 43 N., R. 11 W., on left bank 2.7 

miles upstream from mouth and 2.8 miles south of Fall Creek.

Drainage area. 33.5 sq mi.

Records available.--October 1942 to September 1951. (July 1941 to September 1942 in files 

or Bureau of Reclamation.)

Gage.--Water-stage recorder. Datum of gage is 7,928.79 ft above mean sea level (Bureau of

 Reclamation bench mark). Prior to Aug. 25, 1949, at datum 2.00 ft higher.

Average discharge. 9 years, 24.2 cfs.

Extremes.--Maximum discharge during year, 97 cfs May 27 (gage height, 2.43 ft); maximum

 gage height recorded, 2.47 ft Dec. 7 (ice jam); minimum daily discharge, 1.6 cfs Sept. 

26-28, but may have been less during period of no gage-height record.

1942-51: Maximum discharge, 476 cfs Kay 14, 1944 (gage height, 4.36 ft, present 

datum, from floodmarks), from rating curve extended above 150 cfs; minimum not determined, occurred during period of no gage-height record.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

wnTch are poor. Slight regulation by Sylvan Lake Reservoir (capacity, 230 acre-ft). 

One diversion exports water above station to Beaver and Saltado Creek basins for irrigation of about 2,000 acres.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height in feet, and discharge, in cubic feet per second)

Oct. 1 to Mar. 8 Mar. 9 to Sept. 30

11 1.2 1.0 1.8 20

16 1.3 2.2 2.0 34

29 1.5 7.0 2.4 92

Discharge, In cubic feet per second, water year October 1950 to September 1951

1.3 0.5

1.4 2.5

1.5 6.2

1.6

1.7 

1.9

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

9.6

8.1

7.6

7.2

5.1

4.4

4.4

*4.7

4.7

4.7

5.5

5.8

5.8

6.2

6.2

5.8

5.8

5.8

5.8

5.5

5.5

5.1

5.1

5.5

5.8

5.5

5.1

5.1

5.1

4.7

181.2

5.85

359

Nov.

4.7

4.7

4.0

3.2

3.2

2.9

4.0

*2.9

2.5

2.0

2.5

3.5

4.0

5.0

7.0

18

20

15

25

15

8.0

3.6

4.4

6.2

4.4

4.4

4.4

6.7

11

12

-

214.2

7.14

425

Dec.

(*)

5.5

170.5

5.5

338

Jan.

(*)

3.0

(*)

(*)

93.0

3.0

184

Feb.

3.5

_

-

-

98.0

3.5

194

Mar.

3.5

3.6

3.6

3.5

3.6

3.6

3.5

3.5

*3.6

3.6

3.4

3.4

3.8

3.1

3.4

3.4

? Q £j_2.

2.9

3.5

4.5

5.5

5.0

4.5

5.0

5.8

5.8

5.6

5.4

6.0

6.2

6.4

131.1

4.23

260

Apr.

6.6

7.0

7.8

9.8

8.2

7.8

9.8

9.8

9.0

8.6

9.0

8.5

*8 . 2

7.8

9.4

11

12

11

12

13

13

13

15

17

15

15

13

13

15

13

-

328.3

10.9

651

May

11

11

10

13

16

18

19

20

19

19

19

22

20

17

16

15

*16

18

18

21

28

24

22

21

25

45

68

81

*68

68

68

856

27.6

1,700

June

51

37

29

30

28

33

40

41

44

45

42

40

*38

40

42

44

51

51

48

54

58

51

44

38

36

33

33

30

28

2£

-

1,204

40.1

2,390

July

23

21

20

20

20

18

17

16

14

14

*12

14

14

13

12

13

13

11

9.4

8.2

9.4

11

9.0

9.0

8.2

6.8

7.4

7.0

6.8

6.8

6.0

390.0

12.6

774

Aug.

5.8

5.2

5.2

6.0

6.8

6.8

6.8

*6.5

6.2

5.5

5.2

5.0

4.5

3.8

3.6

3.4

376

3.6

3.8

4.0

4.5

5.8

5.0

5.5

5.5

4.3

3.6

4.3

6.2

10

6.8

162.8

5.25

323

Sept.

5.0

3.8

3.1

2.9

2.7

*2.7

2.4

2.4

2.2

2.1

2.1

2.0

2.0

2.0

2.0

2.0

1.8

1.8

1.7

1.7

2.4

2.4

2.1

2.0

1.7

1.6

1.6

1.6

2.2

3.4

-

69.4

2.31

138

Calendar year 1950: Max 90 Mln - Mean 17.9 Ac-ft 12,950

Water year 1950-51: Max 81 Mln - Mean 10.7 Ac-ft 7,740
140 DOLORES RIVER BASIN

San Miguel River near Placerville, Colo.

Location.--La t 38°02', long. 108°07', in SE-J- sec. 30, T. 44 N., R. 11 W., on left bank 

5 ft downstream from county highway bridge, 100 ft downstream from Specie Creek, and 

3 miles northwest of Placerville.

Drainage area.--308 sq mi.

Records available.--January to September 1909 (monthly discharge), September 1910 to Novanber 1912, October 1933 to September 1934 (no winter record), and March 1942 to September 1951 in reports of Geological Survey (published as "at Placerville" January to 

September 1909, September 1910 to November 1912'. September 1910 to November 1912, 

April 1930 to September 1934 (no winter records,, and March 1942 to September 1950 in 

reports of State engineer.

Gage.--Water-stage recorder. Datum of gage is 7,096.44 ft above mean sea level (State 

Highway bench mark). Prior to September 1934, water-stage recorders or staff gages 

within 3 miles of present site at various datums.

Average discharge.--11 years (1910-12, 1942-51), 253 cfs.

Extremes.--Maximum discharge during year, 734 cfs May 28, June 17 (gage height, 2.36 ft); 

minimum daily, 35 cfs Feb. 1.

1909-12, 1930-34, 1942-51: Maximum discharge, 10,000 cfs Sept. 5, 1909 (failure of 

Trout and Middle Reservoir Dams); minimum daily, that of Feb. 1, 1951.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Several small diversions for irrigation above station. One small 

ditch exports water from Leopard Creek to Dncompahgre River basin. Slight regulation 

by Lake Hope and Trout Lake to Western Colorado Power Co. (combined capacity, 4,040 

acre-ft).

Rating table, water year 1950-51, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.5 

2.0 

2.3

318

530

695

1.0 154

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

82

81

79

76

*73

72

69

65

70

70

69

69

70

69

68

69

68

66

66

66

68

61

62

62

62

61

61

59

675

62

2,121

68.4

4,210

Nov.

61

60

59

58

57

57

59

*59

58

50

54

55

56

57

58

54

58

58

61

60

61

61

58

56

57

57

56

55

55

56

1,721

57.4

3,410

Dec.

59

55

b50

b58

b60

50

*65SB63

61

61

63

61

62

60

60

58

54

62

61

52

50

47

50

50

b46

b45 b49"

b52

b50

b56

1,735

56.0

3,440

Jan.

b54

47

b47

b56

58

b50

b45

blS

*b54

51

b58

60

57

53

56

62

6T

60

61

56

55

57

*58

57

54

55

59

60

55

*61

bSO

1,712

55.2

3,400

Feb.

3540"

50

55

60

65

65

60

60

65

65

70

65

60

55

55

60

60

60

55

55

55

55

55

55

50

50

55

_

_

-

1,590

56.8

3,150

Mar.

50

52

52

50

50

54

52

50

*56

55

53

49

52

53

54

56

56

52

52

56

58

60

62

60

60

62

62

56

60

64

65

1,718

55.4

3,410

Apr.

58

56

54

58

60

58

56

54

54

52

50

45

45

54

7O

*90

94

96

99

99

96

96

103

118

US

116

112

116

112

108

2,389

79.6

4,740

May

106

108

101 TOef

118

130

140

163

157

157

163

17.8

175

160

157

144

*149

166

178

2OO

235

229

229

226

245

360

5O6

653

*6T8

565

565

7,387

238

14,650

June

473

388

352

368

545

404

447

506

530

496

447

421

*460

430

43S

555

641

613

596

596

575

580

525

501

464

511

496

501

492

456

14,607

487

28,970

July

400

384

388

372

348

318

318

304

282

272

*251

232

203

210

190

181

187

181

190

200

216

213

181

172

154

154

152

TBT

175

169

154

7,338

237

14,550

Aug.

154

166

190

190

187

154

144

*132

122

114

108

99

92

90

87

84

79

5T

82

96

90

101

103

105

116

94

89

96

128

200

T5¥

3,720

120

7,380

Sept.

120

TOT

89

87

86

*82

84

84

75

78

76

78

76

75

73

66

66

68

68

65

73

72

63

65

65

65

63

65

73

90

-

2,293

76.6

4,560

Calendar year 1950: Max 738 Min 45 Mean 165 Ac-ft 119,300

Water year 1950-51: Max 653 Min 35 Mean 132 Ac-ft 95,870

Peak discharge (base, 900 cfs).--No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Feb. 1 to Mar. 9, Mar. n to Apr. 16 (stage-discharge relation 

affected by ice during part of period); discharge estimated on basis of 2'discharge measurements 

weather records, recorded range in stage, and records for nearby stations.
DOLORES RIVER BASIN

Beaver Creek near Norwood, Colo.

Location. Lat 37°58<, long. 108° 11", in sec. 28, T. 43 N., R. 12 W., on left bank 500 ft 

upstream from Goat Creek and 13 miles (revised) southeast of Norwood.

Drainage area. 35.2 sq mi.

Records available.--October 1942 to September 1951 (no winter records 1943, 1945).

Gage. Water-stage recorder. Datum of gage is 8,008.81 ft above mean sea level (Bureau of 

Reclamation bench mark). Prior to Oct. 1, 1948, at datum 2.00 ft higher.

Average discharge. 7 years (1944, 1945-51), 17.0 cfs.

Extremes. Maximum discharge during year, 60 cfs May 27 (gage height, 2.42 ft); maximum 

gage height recorded, 2.62 ft Dec. 17 (ice jam); no flow Aug. 6 to Sept. 30.

1942-51: Maximum discharge, 615 cfs June 18, 1949 (gage height, 5.00 ft), from rating curve extended above 370 cfs; no flow Sept. 9-17, 1946, Aug. 23, Sept. 5-7, 1950, 

Aug. 6 to Sept. 30, 1951.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Gurley ditch diverts water above station to Gurley Reservoir (capacity, 

8,800 acre-ft, 3,200 acre-ft prior to September 1948) for irrigation of about 10,000 

acres in Naturita Creek drainage.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. I to Apr. ZZ

1.3

1.4

1.5

1.6

0.2

.6

1.2

2.2

1.7

1.8

1.9

2.0

6.4

10

17

1.0

1.2

1.3

1.4

1.5

. 23 to Sept. 3O

O 

.2 

.3

.6 

1.2

1.6

1.7

1.8 

2.0

2.7 

4.8 

8.0

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2.0

1.4

1.1

1.1

*1.4

1.3

1.1

.8

.9

1.2

1.1

3.5

l.B

1.0

1.0

3j.fi

3.3

3.4

3.2

1.4

.9

.8

.8

3.0

3.2

2.5

1.1

.8

.7

JL&.

51.0

1.65

101

Nov.

0.6

.5

.5

.4

.4

.5

.5

*.6

.5

.3

.4

.5

.6

.7

.7

.8

1.0

2.7

3.6

3.6

3.5

3.2

2.5

2.7

2.8

3.0

2.7

2.8

2.8

3.3

-

48.7

1.62

97

Dec.

2.5

3.0

4.6

4.6

3.3

*5.5

4.8

3.0

2.2

1.7

2.2

2.2

2.0

2.2

1.9

2.1

1.5

1.2

2.5

3.5

2.7

4.3

3.5

4.1

4.1

4.0

4.0

4.1

4.2

4.3

4.3

100.1

3.23

199

Jan.

4.3

4.2

4.2

4.3

4.5

4.3

4.2

4.2

4.3

4.6

4.8 4T8-

4.6

4.3

4.3

4.6

4.6

4.3

4.3

4.3

4.1

3.8

3.5

3.2

2.8

2.7

2.7

2.8

2.7

2.8

2.1

121.2

3.91

240

Feb.

3.8

-

-

-

106.4

3.8

211

Mar.

> 35

*3.6

3.5

, 4.0

116.1

3.75

230

Apr.

5.0

*8.6

8.9

9.6

13

141?

9.4

9.4

7.4

7.0

9.8

7.4

-

206.5

6.88

410

May

6.4

6.1

7.0

11

12

11

11

11

10

9.4

8.9

8.9

8.0

7.7

8.4

7.4

*6.4

8.9

7.0

6.4

6.7

6.7

6.1

5.8

5.4

5.8

11

12

8.9

7.7

8.0

257.0

8.29

510

June

7.0

6 .7

5.4

4.4

4.0

3.8

4.0

4.2

4.2

4.2

4.4

3.3

*-2.7

2.7

2.6

2.2

2.1

2.4

2.2

2.4

3.1

2.6

2.4

2.0

1.6

1.2

1.1

1.0

.8

.7

-

91.4

3.05

181

July

0.6

.7

1.0

.8

.6

.5

.4

.4

.4

.3

*.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.2

.1

9.9

0.32

20

Aug.

0.1

, 1

.1

.1

.1

O

O

*0

0

0

0

0

0

0

0

0

0

0

o

o

o

0

0

0

0

0

o

0

0

o

0

0.5

0.02

1.0

Sept.

(*)

-

O

0

o

Calendar year 195O: Max 1O2 Min 0 Mean 7.55 Ac-ft 5,47O

Water year 1950-51: Max 14 Mln 0 Mean 3.04 Ac-ft 2,20O

Peak discharge (base, 2OO efs). No peak above base. 

* Discharge Discharge measurement measurement made on this day.a

Note.--Stage-discharge relation affected by ice Nov. 10, 11, Dec. 6, 9-13, 15-19, 21-23, Dec. 

to Jan. 9, Mar. 17. No gage-height record Jan. 29 to Mar. 14, Mar. 18 to Apr. 18 (stage-dlschar 

relation affected by ice during part of period); discharge estimated on basis of weather records 

recorded range in stage, and records for stations on nearby streams.
142

Location.--Lat 38°1£', long. 108°03', in NW£ sec. 35, T. 46 N., R. 11 W., on left bank 

 30 ft downstream from highway bridge, at boundary of Uncompahgre National Forest, and 

8 miles northwest of Sams.

Drainage area.--S3.3 sq mi.

Records available.--May 194J to September 1951 (discontinued).

Sage,--Water-stage recorder. Altitude of gage is 8,330 ft (by barometer).

Average discharge.--9 years, 9.19 cfs.

Extremes.--Maximum discharge during year, 16 cfs May 5 (gage height, 1.96 ft); no flow 

on many days.

1942-51: Maximum discharge, 1,030 cfs May 12, 1944 (gage height, 5.43 ft), from 

rating curve extended above 500 cfs; no flow at times each year.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 15, 16)

Oct. 1 to Mar

1.0 1.0

1.1

1.2

14 to Sept. 30

Q 1.4

.1 1.5

."I 1.8

2.5

4.0

11

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.3

.3

.4

.3

.2

.2

.3

.2

.1

.1

.1

-

2.5

0.08

5.0

Dec.

0.4

.3

.3

.4

.5

.5

.6

TF

.5

.5

.5

.6

.5

.5

.4

.4

.4

.5

.4

.4

.4

.3

.3

.5

.4

.3

.2

.1

.1

.1

.2

12.0

0.39

24

Jan.

0.3

.3

.3

> 3

9.3

0.30

18

Feb.

0,3

_

_

-

8.4

0.3

17

Mar.

-

0.3

_

*b.3

b.4

b.4

b.4

.6

,6

b.6

b.5

b.4

b.4

b.6

b.7

b.8

b.8

.8

1.0

.7

.7

14.6

0.47

29

Apr.

0.8

1.0

1.2

1.2

1.2

1.2

1.3

1.2

1.4

1.3

1.4

1.3

*1 .2

1.5

2.6

*2.5

2.4

2.5

2.4

2.5

3.4

3.2

3.0

3.1

2.3

3.0

3.4

3.1

4.0

4.4

-

65.0

2.17

129

May

3.8

5.0

6.8

8.6

10_

7.8

7.0

6.8

6.8

5.8

5.0

3.8

3.0

2.8

2.5

2.4

*2.2

2.3

2.2

1.9

2.5

3.1

2.5

2.8

2.0

1.3

.8

.5

.2

.2

.1

112.5

3.63

223

June

0.1

.1

.2

.1

.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

-

0.9

0.03

1.8

July

(*)

0

0

0

Aug.

0

0

0

Sept.

(*)

-

0

0

0

Calendar year 1950: Max 114 Mln 0 Mean 4.46 Ac-ft 3,230

Water year 1950-51: Max 10 Min 0 Mean 0.62 Ac-ft 447

Peak discharge (base. 280 cfa).--No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--Ho gage-height record Jan. 4 to Mar. 13 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of weather records, and records for stations on nearby 

streams.
DOLORES RIVER BASIN 

Cottonwood Creek near Nucla, Colo.

143

Location.--Lat 38°16', long. 108°22', in sec. 1, T. 46 N., R. 14 W., on right bank 10 ft

rrom State Highway 90, half a mile upstream from North Pork,and 10 miles east of Nucla. 

Drainage area.--43 sq mi, approximately.

Kecoras available --May 1942 to September 1951 (discontinued). 

gage.--water-stage recorder. Altitude of gage is 6,080 ft (by barometer). 

Average discharge.--9 years, 4.75 cfs . 

extremes.--Maximum discharge during year, 32 cfs May 5 (gage height, 2.20 ft); no flow

during most of winter.

1942-51: Maximum discharge, 321 cfs Apr. 16, 1948, from rating curve extended above

200 cfs; maximum gage heig'.t, 4.48 ft May 1, 1945; no flow at times.

Revisions.--The figures of maximum discharge for some water years have been revised,

as snown in the following table. They supersede those published in the water-supply

papers indicated.

Water-supply 

Paper

959. ........

979... ......

Water 

year

1-1942

1942-43

Date

May 9, 1942

Apr. 15, 1943

Gage height 

(feet)

2.55

2.78

Discharge 

(cfs)

7 C, 102

t Period May to September.

Remarks.--Records fair. A few small diversions for irrigation of about 150 acres above

station. 

Revisions.--Revised figures of discharge,in cubic feet per second,for a high-water period

in tne water year 1942, superseding those published in Water-Supply Paper 959, are

given herewith:

Day

May 1

2

3

4

5

6

7

8

9

Discharge

a45

a45

a45

a45

a45

46

48

51

58

Day

May 10

11

12

13

14

15

16

17

18

Discharge

59

58

54

42

38

37

36

36

38

Day

May 19

20

21

22

23

24

25

26

27

Discharge

37

39

44

45

45

43

41

40

39

a No gage-height record; discharge estimated on basis of 

records for stations on nearoy streams.

Month

The period May to September 1942..

Cfs-days

1,303

Maximum

59

Minimum

20

Mean

42.0

Kunorr in 

acre-fee^

2,580 

3,050

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-rq

Oct.

0.1 ~7T

*_

0

15

0

0

0

0

0

0

0

2.2

0.07

4.4

Nov.

(*)

0

0

0

Dec.

0

T3

0

.1

7T

*.l

.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

0.4

0.01

0.8

Jan.

(*)

0

0

0

Feb.

0

0

0

Mar.

(*)

(*)

0

0

0

Apr.

(*)

(*)

0

0

0

May

0

15

0

1.8

11

~9.2 14

7.3

5.5

5.8

7.3

6.2

5.3

4.9

5.5

3.8

*3.7

4.9

5.3

6.0

8.1

8.5

7.0

6.0

6.0

7.0

9.6

12

10

7.7

7.0

196.4

6.34

390

June

 575 6.6

4.7

3.5

3.7

3.0

2.2

1.9

1.7

1.7

1.6

1.5

*1.2

.9

.7

.6

.6

.6

.6

.6

.6

.4

.4

.4

.4

.4

.4

.4

.3

75

47.4

1.58

94

July

0.3 ~7S

.3

.3

.3

.3

.3

.3

.3

.3

*.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

7.8

0.25

15

Aug.

0.2

.2

.5

73

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.1

7T

.1

.1

.1

.2

.2

.1

.1

.1

.2

.1

.1

.1

.1

.4

.2

.1

5.5

0.18

11

Sept.

o.:.

*.

-

3.0

0.10

6.0

Calendar year 1950: Max 65 Mln 0 Mean 4.16 Ac-ft 3,010

Water year 1950-51: Max 14 Mln 0 Mean 0.72 Ac-ft 521

Peak discharge (base, 40 cfs). No peak above base. 

* Discharge measurement made on this day.

Note. No gage-height record Nov. 28 to Mar. 15; discharge estimated on basis of 3 discharge 

urements, weather records, and records for stations on nearby streams.
144 DOLORES RIVER BASIN

Naturita Creek near Norwood, Colo.

Location.--Lat 37°58', long. 108°19', in SE£ sec. 20, T. 43 N., R. 13 W., on right bank 

5U(J rt downstream from confluence of Middle and West Naturita Creeks (revised) and 11 

miles south of Norwood.

Drainage area. 27.7 sq mi.

Records available. October 1941 to September 1951 (no winter records 1941-45). (October 

to uecemoer ia40 and Hay to September 1941 in files of Bureau of Reclamation.)

Gage.--Water-stage recorder. Datum of gage is 7,601.12 ft above mean sea level (Bureau 

of Reclamation bench mark). Prior to May 5, 1942, at datum 1.00 ft higher.

Average discharge.--6 years (1945-51), 4.93 cfs.

Extremes. Maximum discharge during year, 430 cfs Aug. 3 (gage height, 3.49 ft), from 

rating curve extended above 130 cfs on basis of slope-area determination of peak flow; 

no flow for many days.

1941-51: Maximum discharge, 943 cfs July 24, 1945 (gage height, 5.19 ft), from 

rating curve extended above 200 cfs on basis of slope-area determination at gage height 

4.80 ft; no flow at times in 1945, 1948, 1950, and 1951.

Remarks --Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Many small diversions above station for irrigation of a few hundred 

acres above and below station. One diversion above station for irrigation of a few 

hundred acres in Dry Creek basin.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge , in cubic feet per second)

Oct. 1 to Mar. 14

0.0 0 O.3

.1 .1 .4

.2 .4 .5

Mar. 15 to Sept. 30

1.1 

2.0 

3.4

-0.1 

O 

.1 

.2

0.3 0.6

.5 2.6

.7 6.0

.9 12

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

SO

31

Total

Mean

Ac- ft

Gale

Oct.

~7j 0.2

0

C

o

*o

o

0

0

0

.1

0

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

.1

2 . 3

0.07

4.6

Nov.

0.1

.1

.1

.1

.2

.1

.1

*.l

.1

0

.1

.2

f 1

.1

.8

.5

.7

.9

3.3

1.6

.4

.2

.2

.2

.2

.2

'.2

.3

-

11.6

0.39

23

Dec.

0.3

KT

b.6

b.8

bl.O

*bl.3

2.4

2.6 573

1.6

1.7

2.1

1.9

1.9

Z.O

1.8

1.4

1.1

1.6

1.3

1.1

1.5

bl.O

bl.O

bl.O

44.7

1.44

89

Jan.

1.5

46.5

1.5

92

Feb.

2.0

-

_

-

56.0

2.0

111

Mar.

> s.o

*4.2

3.9

2.7

2.7

2.7

3.0

4.0

3.2

2.4

2.6

3.0

3.6

3.4

2.5

2.2

2.4

2.4

92.9

3.00

184

Apr.

2.6

2.7

2.7

276

2.5

2.2

1.9

1.8

1.6

1.4

1.0

.9

.9

.9

.8

.6

.6

.6

*.6

1.2

1.7

1.4

1.0

1.0

.9

.9

.8 

.5

175

1.6

-

41.1

1.37

82

May

1.6

2.6

2.7

1.9

1.0

.7

.7

.6

173

2.5

3.4

T75

.8

.9

3.0

2.0

*1.9

1.7

1.7

1.7

2.0

2.0

2.2

1.7

1.5

1.4

2.4 

2.6

1.9

1.0

.8

53.7

1.73

107

June

1.4

1.7

T75

.9

.4

.5

.5

.4

.1

.1

.1

.1

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

O

0

0 

0

0

0

-

8.7

0.29

17

July

0

C

0

0

0

0

0

o

0

0

*0

o

0

0

0

0

0

0

0

_.2_

.2

.1

0

0

0

0

0 

0

0

0

0

0.5

0.02

1.0

Aug.

0

C

*9.2

T75

.2

0

0

*o

o

0

0

o

o

0

0

0

0

0

0

0

.3

.2

0

1.5

.1

0

0 

.5

7.3

.6

0

20.9

0.67

41

Sept.

*)

-

0

0

0

idar year 1950 : Max 21 Mln O Mean 2.49 Ac-ft 1,800

Water year 1950-51 : Max 9.2 Min 0 Mean 1.O4 Ac-ft 752

Peak discharge (base, 210 cfs). Aug. 3 (7 p.m.) 43O cfs (3.49 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Dec. 26 to Mar. 15 (stage-discharge relation affected by ice during 

nost of period), Aug. 4-7, Aug. 31 to Sept. 5; discharge estimated on basis of 1 discharge measureBent, weather records, and records for stations on nearby streams.
DOLORES RIVER BASIN 145

San Miguel River at Naturita, Colo.

Location. Lat 38°13'10", long. 108°34'00", in SE&w£ sec. 19, T. 46 N., R. 15 W., on left 

bank"at downstream side of bridge on State Highway 97 in Naturita and 1.2 miles downstream from Naturita Creek.

Drainage area.--1,080 sq mi, approximately.

Records available.--October 1917 to September 1927, October 1940 to September 1951 in reports of Geological Survey. April 1918 to September 1929 and October 1940 to September 

1951 in reports of State engineer. April to September 1940 in files of Bureau of Reclamation.

Gage. --Water-stage recorder. Datuir, of gage is 5,392.85 ft above mean sea level, datum of 

1929. October 1917 to Sept. 2, 1926, chain gage, and Sept. 3, 1926, to Sept. 30, 1927, 

water-stage recorder, at present site and various datums. Oct. 1, 1940, to Dec. 9, 1941, 

staff gage at present site and datum.

Average discharge.--23 years (1917-29, 1940-51), 392 cfs.

Extremes.--Maximum discharge during year, 1,130 cfs Aug. 3 (gage height, 3.64 ft); minimum 

daily, 25 cfs Feb. 1.

1917-29, 1940-51: Maximum discharge, 7,100 cfs Apr. 15, 1942 (gage height, 9.80 ft), 

from rating curve extended above 3,800 cfs; minimum daily, 12 cfs Sept. 5, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Natural flow of stream affected by storage reserviors, diversions for 

irrigation, and return flow from irrigated areas.

Hating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shiftins-control irethod used Apr. 6-8)

0.6 

1.0 

1.5 

2.0 

3.0

190

340

780

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

45

58

65

62

52

*56

68

86

77

82

82

82

81

81

82

81

81

81

77

77

77

76

76

72

74

72

74

74

72

70

74

2,267

73.1

4,500

Nov.

72

72

72

71

70

66

*68

72

72

64

48

64

65

72

70

65

61

70

74

77

79

79

77

72

68

62

62

44

27

27

-

1,962

65.4

3,890

Dec.

42

81

68

81

88

*66

68

86

82

76

71

79

76

77

79

77

72

64

70

77

71

48

49

68

79

71

70

77

79

74

80

2,246

72.5

4,450

Jan.

76

74

59

88

95

79

52

30

*40

35

70

80

75

75

80

85

80

80

90

85

85

*80

80

85

80

75

70

62

41

*60

55

2,201

71.0

4,370

Feb.

25

30

40

45

60

70

65

65

70

80

80

8580"

65

65

70

70

70

70

70

65

65

70

70

70

65

65

70

_

_

-

1,815

64.8

3,600

Mar.

65

70

70

60

60

65

65

*62

82

12

79

72

70

76

76

79

79

71

68

70

76

79

82

77

77

79

79

59

31

26

33

2,119

68.4

4,200

Apr.

42

31

33

44

55

42

44

45

42

38

*38

30

28

3TT

41

55

62

68

68

72

77

71

72

86

90

84

91

82

86

97_

1,744

58.1

3,460

May

86

82

77

74

95

128

130

142

152

150

152

165

172

160

165

150

142

*160

170

190

224

248

224

233

233

302

440

658

586" 676

576

7,142

230

14,170

June

492

396

326

319

299

322

360

424

464

452

468

*364

388

372

360

444

586" 590

576

572

522

576

500

480

408

448

452

448

444

420

13,272

442

26,320

July

344

3t56"

312

299

275

242

221

224

195

*175

162

150

115

113

111

95

101

99

97

109

130

135

105

99

84

79

77

88

105

97

91

4,837

156

9,590

Aug.

84

91

225

227

£58

172

*152

138

122

113

109

101

90

90

84

81

77

Tf

81

118

105

99

103

97

111

101

86

90

215

221

175

3,843

124

7,620

Sept.

130

TTT

93

88

84

*81

77

76

72

64

68

65

66

48

45

42

35

35

37

35

35

45

41

34

31

33

33

33

37

54

1,728

57.6

3,430

Calendar year 1950: Max 641 Min 12 Mean 193 Ac -ft 139,900

Water year 1950-51: Max 676 Min 25 Mean 124 Ae-ft 89,600

Peak discharge (base, 1,760 efs).--No peak above base.

* Discharge tneasruement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 30 to Jan. 2, Jan. 9-27, Jan. 30 to Feb. 2. 

No gage-height record Feb. 3 to Mar. 8 (stage-discharge relation affected by ice during part 

of period); discharge estimated on basis of 1 discharge measurement, weather records, and records fa 

nearby stations.
146 DOLORES RIVER BASIN

Tabeguaohe Creek near Nucla, Colo.

Location.--Lat 38.°22', long. 108°20', in SE£ sec. 31, T. 48 N., R. 13 W., on right bank 

ifa ft downstream from bridge, 1 mile downstream from head gate of Glencoe ditch,and 

13 miles northeast of Nucla.

Drainage area.--20.7 sq mi.

Records available.--April 1946 to September 1951.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 8,010 ft (by barometer) .

Average discharge.--5 years, 11.6 cfs.

Extremes.--Maximum discharge during year, 140 cfs May 12 (gage height, 3.30 ft); no flow 

at times.

1946-51: Maximum discharge, 303 cfs May 15, 1949 (gage height, 3.83 ft), from 

rating curve extended above 170 cfs; no flow at times during most years.

Remarks.--Records good except those for period of no gage-height record, which are poor. 

Ulencoe ditch diverts water above station for irrigation of a few hundred acres in a

nearby basin.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

1.5

1.6

1.7

1.8 

2.0

1.7 

4.5

2.2

2.3

2.5 

2.7 

3.0

9.0 

12.5

85

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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

o

0

*o

0

0

0

o

0

0

0

0

.2

.7

.6

.6

.7

.7

.7

.7

.6

.7

.8

.9

.9

.8

.8

.8

.8

12.0

0.39

24

Nov.

0.8 

.8

.0

.0

.2

.2

.2

1.2

1.2

.8

.6

.6

.8

1.2

1.2

1.4

1.4

1.7

3_.0

2.0

1.3

.9

.8

.6

.4

.4

.5

.4

Ts~

-

30.2

1.01

60

Dec.

0.3 

.3

.2

.1

.2

*.3

.3

8.9

0.29

18

Jan.

0.3

9.3

0.3

18

Feb.

0.3

-

-

"

8.4

0.3

17

Mar.

0.4

12.4

0.4

25

Apr.

1.7 

2.1

2.6

2.6

2.6

2.6

2.6

2.6

3.0

2.8

3.0

*2.8

2.6

4.0

9.4

9.4

*9.4

9.0

8.2

8.5

10

9.4

11

11

9.7

9.4

7.8

8.0

9.4

7.5

-

184.7

6.16

366

May

8.8 

7.2

8.0

18

39

46

39

35

32

33

36

41

35

34

36

31

32

*42

48

53

63

62

56

53

56

63

74

72

53

41

36

1,283.0

41.4

2,540

June

30 

23

19

16

12

11

9.7

9.4

7.8

6.3

6.1

*5.7

5.1

4.4

3.4

2.2

2.2

2.5

1.6

1.4

1.5

1.2

1.5

1.2

.3

.3

1.0

.2

,5

.4

-

186.9

6.23

371

July

~0.3

.2

.2

.1

0

0

O

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

0.03

2.0

Aug.

0 

0

.4

lol

.6

.2

.1

*0

O

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

o

0

.7

.4

3.8

0.12

7.5

Sept.

F0

o

*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

-

0.1

0.003

0.2

Calendar year 1950 : Max 155 

Water year 1950-51 : Max 74 Min 0

Mean 13.1 

Mean 4.77

Ac-ft 9,490 

Ac-ft 3,450

Peak discharge (base. 110 efs).--May 12 (8 p.m.) 140 cfs (3.30 ft)j May 26 (8 p.m.) 124 cfs (3.22

* Discharge measurement made on this day.

Note. No gage-height record Dec. 5 to Apr. 16 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of 2 discharge measurements, weather records, and records for stations on nearby streams.
DOLORES RIVER BASIN " 

Taylor Creek near Gateway, Colo.

Location.--Lat 38°31, long. 109°07', In sec. 24, T. 26 S., R. 25 E., In Utah, on left 

bank at downstream side of county road bridge, a quarter of a mile downstream from 

South Taylor Creek,and 12 miles southwest of Gateway.

Drainage area.--12 sq mi, approximately.

Records available. October 1944 to September 1951 (no winter records 1944-46).

Gage.--Water-stage recorder. Altitude of gage is 8,120 ft (by barometer). Prior to Aug. 

31, 1949, water-stage recorder at site 770 ft downstream at datum 6.01 ft lower.

Average discharge. S years (1946-51), 4.72 cfs.

Extremes.--Maximum discharge during year, 19 cfs Aug. 1 (gage height, 2.83 ft); minimum 

daily, 0,1 cfs Aug. 15.

1944-51: Maximum discharge, 555 cfs Apr. 18, 1948; no flow at times June to August 

1946, Sept. 29, 1949.

Remarks.--Records good except those for periods of ice effect, which are poor. No diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge. In cubic feet per second)

Oct. 1 to Feb. 20 Feb. 21 to Sept. 30

2.0

2.1

2.2

0.2 

.7

1.6

2.0

2.1

2.2

0.1

.4

1.1

2.4

2.5 

2.7

4.1

6,0

12

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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.

0-4

.4

.4

.4

*.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.2

72

.2

.2

.3

.2

11.2

0.36

22

Nov.

0.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.4

.3

.4

.4

.3

.3

.4

.4

1.1

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.4

-

10.2

0.34

20

Dec.

0.4

.4

.4

*.5

.4

.4

.4

.5

.5

.4

.4

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.2

.3

.4

.4

.3

.3

.3

.4

.3

.4

12.2

0.39

24

Jan.

0.4

.4

75

.5

.4

.4

.4

.4

.4

.2

.4

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.5

.4

,3

12.7

0.41

25.

Feb.

0.2

.3

.4

.4

.4

.5

.5

.5

.5

.5

.6

.7

.7

.6

.6

.5

.5

.5

.5

.5

.6

.6

.6

.6

.8

.8

.8

.8

_

_

-

15.5

0.55

31

Mar.

~79 0.8

.8

.8

1.0

.8

.8

.8

.8

.8

.9

.9

.9

1.0

1.3

1.9

1.7

1.0

.8

1.1

2.1

2.5

2.1

2.3

3.6

5.0

4.6

2.8

1.9

1.8

1.5

50.0

1.61

99

Apr.

1.3

2.2

4.5

4.3

3.4

3.7

3.9

3.9

*4.1

3.0

2.1

2.1

2.3

3.2

3.2

2.5

2.7

2.7

2.5

2.1

2.7

2.3

1.9

1.7

1.5

1.3

1.2

1.0

1.7

3.0

-

78.0

2.60

155

May

2.2

2.3

2.7

3.4

3.7

3.7

2.8

2.5

2.5

2.3

2.3

2.5

2.3

3.0

5.2

*4.5

5.0

4.5

4.7

4.5

5.8

8.8

7.0

6.5

5.8

5.6

5.4

5.6

5.0

4.7

4.1

130.9

4.22

260

June

4.3

fcf

3.2

2.8

2.3

2.1

.7

.6

.6

* .6

.5

.5

.3

.2

.0

.0

.1

.0

.2

.3

.0

.0

.8

.7

.5

.4

.3

. 2

7?

-

47.0

1.57

93

July

0.2

.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

.4

.3

.3

.3

7.5

0.24

15

Aug.

2.0

t'.sB Q

.7

.6

*.3

.2

.2

.2

.2

.2

.2

.2

.2

-il

.2

.2

.2

.2

.7

.3

.2

.2

.3

.2

.2

.2

.4

1.5

1.0

.3

14.0

0.45

28

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

4.

7f

-

6.3

0.21

12

Calendar year 1950: Max 53 Min 0.2 Mean 3.87 Ac -ft 2,800

Water year 1950-51: Max 8.8 Mln 0.1 Mean 1.08 Ac-ft 784

Peak discharge (base, 40 efs"). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Jan. 2, 6, Jan. 30 to Feb. 20.
148 DOLORES RIVER BASIN 

Deep Creek near Paradox, Colo.

Records available.--August 1944 to September 1951 (no winter records In 1945).

Gage.--Water-stage recorder and log control. Datum of gage is 8,659.59 ft above mean sea 

level (Bureau of Reclamation bench mark).

Average discharge. 6 years (1945-51), 1.78 cfs.

Extremes. Maximum discharge recorded during year, 2.3 cfs Nov. 19 (gage height, 1.28 ft); 

minimum daily, 0.1 cfs on many days.

1944-51: Maximum discharge recorded, 29 cfs June 18, 1949 (gage height, 1.52 ft), 

from rating curve extended above 15 cfs; no flow Oct. 15-23, 27, Nov. 1, 4-6, 1948, and 

probably at other times during winter months.

Remarks.--Records fair except those for periods of no gage-height record, which are poor. 

Most of flow diverted a quarter of a mile above station to Buckeye Reservoir in West 

Paradox Creek basin.

Revisions (water years).--W 1149: 1947(M).

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

1.0

1.1

1.2

1.3

0.04 

.38 

1.1 

2.6

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

+L

4.3

0.14

8.5

Nov.

0.3

.3

.3

.3

.3

*.2

.2

.1

.1

.1

.1

.1

.2

1.3

1.4

1.4

1.4

1.6

1 .9

1.7

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

-

29.3

0.98

58

Dec.

1.5

46.5

1.5

92

Jan.

1.6

49.6

1.6

98

Feb.

1.7

_

_

-

47.6

1.7

94

Mar,

1.8

55.8

1.8

111

Apr.

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

1.6

1.4

.9

.6

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

-

34.4

1.15

68

May

0.3

.3

.3

.4

.4

.3

.3

.3

.3

.3

.3

- .3

.3

.3

.3

*.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

8.2

0.26

16

June

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

-

5.9

0.20

12

July

0.2

~.1 

.1

.1

.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

.2

3.7

0.12

7.3

Aug.

0.2

.3

73

.2

.2

*.l!i.1

a

.1

a

.1.1.1.1

.1.1.1.1.1

.1.1.1.1.1

.1.1

a

.2

.2

.2

4.1

0.13

8.1

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 1950: Max 3.O Min 0.1 Mean 1.09 Ac-ft 790

Water year 1950-51: Max - Min 0.1 Mean 0.80 Ac-ft 579

* Discharge measurement made on this day.

Note. No gage-height record Nov. 20 to Apr. 9 (stage-discharge relation affected by ice during 

part of period); discharge estimated on basis of weather records and records for stations on nearby 

streams.

Geyser Creek near Paradox, Colo.

Location.--Lat 38°28', long. 109°09', in NE£ sec. 15, T. 27 S., R. 25 E., in Utah, at 

spillway of Geyser Creek Reservoir, 11 miles northwest of Paradox.

Records available. August 1944 to September 1951 (discontinued).

liage.--water-stage recorder and sharp-crested weir. Datum of gage is 8,628.00 ft above 

mean sea level (Bureau of Reclamation bench mark).

Average discharge.--7 years, 0.28 cfs.

iixtremes . MO now during year.

TF44-51: Maximum discharge, 134 cfs June 18, 1949 (gage height, 2.88 ft), by computation of flow over broad-crested weir; no flow during most of every year.

Remarks. Flow diverted just above station to Buckeye Reservoir in West Paradox Creek
DELDRES RIVER BASIN 149

Roc Creek near Uranium, Colo.

Location.--Lat 38°26'05", long. 108°55'20", in NW-fNW^ sec. 12, T. 48 N., R. 19 W., on 

right bank at La Sal National Forest boundary 1-5- miles west of Uranium.

Drainage area.--69.5 sq mi.

Records available.--August 1944 to September 1951 (no winter records in 1945).

Gage.--Water-stage recorder. Altitj.de of gage is 5,200 ft (from topographic map). Prior 

fo July 26, 1946, at site a quarter of a mile downstream at different datum.

Average discharge.--6 years (1945-51), 8.82 cfs.

Extremes. Maximum discharge recorded during year, 18 cfs Aug. 20 (gage height, 1.21 ft); 

 minimum daily, 0.1 cfs Nov. 11, 12.

1944-51: Maximum discharge, 508 cfs Apr. 18, 1948 (gage height, 3.93 ft), from 

rating curve extended above 130 3fs; no flow July 7, 1946, Dec. 3-7, 13-2C, 1948.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Most of flow of Geyser and Deep Creeks in Roc Creek basin is diverted 

to Buckeye Reservoir in West Paradox Creek basin; release from Buckeye Reservoir 

(see p. 136 ) is approximately eqial to flow diverted from Roc Creek basin.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Sept. 6-3O)

Oct. 1 to Mar.

0.4 

.5

0.0 

.3 

1.0 

3.5 

7.0

0.4

.5 

.6 

.7

lar. 7 to Sept. 30

0.1 0.8 3.4

.4 .9 5.2

1.1 1.0 8.0

2.1 1.1 12

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.4

.4

* .4

.5

.5

.4

.5

.5

.5

.5

.4

.4

.4

.4

.5

.4

.4

.4

.4

.2

.1

.1

.1

.2

.2

.0

.1

.1

.0

.1

40.9

1.32

81

Nov.

1.2

1.1

.9

1.0

1.0

1.2

*1.2

1.1

.9

.3

.1

.1

.5

.9

1.5

1.8

2.3

2.8

5.0

4.4

3.5

3.0

2.5

2.5

3.1

3.2

3.1

3.1

3.1

3.1

59.5

1.98

118

Dec.

3.4

1.8

1.5

3.0

*b2.8

b2.6

2.5

3.2

3.0

b2.6

b2.6

3.1

b2.7

3.0

3.0

b2.6

b2,2

b2.2

b2.2

b2.2

b2.0

bl.6

b2.0

b2.5

b2.5

1.7

1.7

1.7

2.5

1.7

2.5

74.6

2.41

148

Jan.

2.5

2.5

3.3

3.3

3.3

2.7

2.7

*2.7

2.7

2.7

1.5

275

3.5

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

4.5

*475

4.5

2.5

93.9

3.03

186

Feb.

1.3

272

3.0

3.0

3.0

3.5

3.5

3.0

4.0

5.0

6.0

6.0

6.0

5.0

4.5

4.5

4.5

4.0

4.5

4.0

3.0

3.0

3.0

3.0

3.0

4.0

4.0

4.0

_

-

107.5

3.84

213

Mar.

4.1

4.5

4.3

4.4

5.0

4.0

*3.8

3.9

3.6

3.4

3.4

3.6

3.6

3.8

3.9

4.7

3.9

3.9

4.7

4.3

5,2

6.3

4.5

5.0

6.0

8.0

10

6.3

4.8

6.0

5.5

148.4

4.79

294

Apr.

5.2

5.2

6.9

10

10

8.4

8.8

9.2

8.0

*10

5.8

5.5

6.0

6.9

6.9

5.8

5.5

*4.8

4.3

3.9

4.3

4.3

3.6

3.1

3.0

2.9

3.0

2.8

3.3

4.8

172.2

5.74

342

May

4.3

3.9

3.9

4.7

4.7

4.5

4.3

3.8

3.8

3.4

3.3

3.0

3.4

3.8

7.4

6.9

*6.6

6.0

5.8

5.5

6.6

11

12

10

7.7

7.2

6.9

6.3

6.0

5.8

5.0

177.5

5.73

352

June

4.8

5.2

5.2

4.5

3.9

3.4

3.0

2.9

2.8

2.6

2.6

*2.4

2.4

2.2

2.2

2.0

1.8

1.9

1.8

1.7

2.0

1.9

1.7

1.5

1.4

1.2

1.0

.9

.8

_J_

72.4

2.41

144

July

0.6

.6

.5

.5

.5

.6

.5

.4

.3

*.4

.3

.3

.3

.3

.3

.5

.5

.5

.4

.4

.8

.8

.6

.8

.6

.6

.7

.8

.7

.5

.5

16.1

0.52

32

Aug.

0.5

1.6

3.1

2^6

1.9

1.5

*1.0

.8

.8

.6

.5

.5

.4

.4

jj>

.3

.3

.4

.4

3.0

2.1

1.2

1.0

.4

.3

.3

.5

.5

3.0

2.0

1.7

33.9

1.09

67

Sept.

1.5

1.2

1.1

1.1

*1.1

1.1

1.0

1.0

1.0

1.0

.9

.9

1.0

1.0

1.0

.8

79

.9

.9

.8

.8

.9

.9

.9

.9

.9

.9

.9

1.7

1.7

30.7

1.02

61

Calendar year 1950 : Max 73 Mln 0.1 Mean 8.24 Ac-ft 5,960

Water year 1950-51 : Max 12 Mln o.l Mean 2.82 Ac-ft 2,040

Peak discharge (base. 100 cfs). No peak above bas

ation affected by ice during 

3 discharge measurements,

256684 O - 53 - 11
150 DOLORES RIVER BASIN

Dolores River at Gateway, Colo.

Location. Lat 38°40'55" (revised), long. 108°58'50" (revised), in SW£ sec. 15, T. SIN., 

R. 19 W., on right bank 500 ft downstream from bridge on State Highway 141, 0.3 mile 

northwest of Gateway, 0.3 mile downstream from West Creek, and 8 miles upstream from 

Colorado-Utah State line.

Drainage area. 4,350 sq mi, approximately. 

Records available.--March 1937 to September 1951.

Sage.--Water-stage recorder. Datum of gage is 4,547.76 ft above mean sea level, datum of 

1929. Prior to Oct. 10, 1941, at site 300 ft upstream at same datum.

Average discharge.--14 years, 975 cfs.

Extremes. Maximum discharge during year, 1,830 cfs May 29 (gage height, 2.92 ft); minimum 

daily, 44 cfs Sept. 23.

1937-51: Maximum discharge, 15,400 cfs May 14, 1941 (gage height, 11.33 ft, present 

site); minimum daily, 23 cfs Sept. 6, 1950.

Remarks.--Records good except those for periods of ice effect or when chain gage was used, 

which are fair. Natural flow of stream affected by storage reservoirs, diversions to 

Montezuma Valley in the San Juan River basin, diversions for irrigation, and return 

flow from irrigated areas. Records of chemical analyses and water temperatures for the 

water year 1951 are given in Wpter-Supply Paper 1200.

Revisions (water years).--W 859: 1937.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. I to Jan. 15 Jan. 16 to Sept. 30

0 58 -0.3 40 0.7 270

.2 100 0 78 1.0 440

.4 155 .2 115 2.0 1,110

3.0 1,900

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

64

62

58 *T2

70

66

66

64

82

85

78

82

80

8U

78

898-5"

80

80

82

8282'

82

82

82

82

82

82

82

82

85

2,408

77.7

4,780

Nov.

82

91

87

87

89

*87

87

87

87

87

85

80

76

80

93

91

87

85

96

114

112

110

102

100

96

91

91

91

82

68

-

2,701

90.0

5,360

Dec.

6670-

91

*96

100

110

100

93

107

110

107

100

124

140

TW

140

127

122 ' 12

110

114

107

82

78

90

87

85

80

b85

78

b95

3,136

101

6,220

Jan.

blOO

b90

b80

blOO

bllO

bl!5

b80

*b707B"

72

91

bl!5

bl!5

b!20

1-115

113

122

145

145

135

132

*138

140

155

T5T

138

138

140

*148

b!20

b95

3,607

116

7 , 150

Feb.

b65 b90"

115

120

135

152

165

150

60

74

83

77

89

T5S

142

142

140

148

158

158

142

138

138

132

128

122

120

120

-

-

-

3,971

142

7,880

Mar.

122

118

115

109

105

111

*111

107

107

120

148

TIT

140

135

132

130

125

125

115

109

118

125

128

122

118

111

128

138

125

105 TT3-

Apr.

107

111

103

93

93

101

103

95

93

*90

88

81

81

78

m

83

92

103

111

115

118

120

. 122

120

125

142

132

142

150

155

-

3,760 3,227

121

' .460

108

6,4^0

May

174

165

160

155

T7T

275

295

548

596

584

566

524

560

584

620

*560

452

398

398

404

464

648

788

802

697

627

858

1,260

1,570

1,530

1,380

18,819

June

1,330

1,260

1^080

879

746

648

655

676

823

900

*928

872

767

732

683

634

718

830

914

970

956

893

879

753

662

548

560

530

500

476

-

23,802

607 793

37,330 47,210

July

434

350

305

305

285

262

234

212

*212

189

171

160

150

130

115

115

111

109

1C7

103

125

130

135

138

*132

115

99

ITT

113

118

125

5 , 402

174

10,710

Aug.

115

130

195

542

368

*258

192

186

160

145

132

120

111

103

97

90

88

86

85 170-

180

195

171

152

145

113

118

103

103

975

g690

6,318

204

12,530

Sept.

g404

g216

g!60

*122

111

105

105

99

95

92

8S

g75

S72

g75

g6'

g4<3

g46

g48

g48

g46

g45

g44

gST

S57

g49

g4<5

g46

g46

g49

-

2,623

87.4

5,200

Calendar year 1950: Max 4,660 Min 23 Mean 505 Ac-ft 365,900

Water year 1950-51: Max 1,570 Min 44 Mean 219 Ac-ft 158,200

Peak discharge (base, 4,000 cfs). No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

g Discharge computed from once or twice daily chain-gage readings.
DOLORES RIVER BASIN 151

Dolores River near Cisco, Utah

Location.--Lat 38°47'40", long. 109°12'25", in SW^SE^ sec. 18, T. 23 S., R. 25 E., 9 miles 

upstream from mouth and 14 miles southeast of Cisco.

Records available.--December 1950 to September 1951.

Gage.--Water-stage recorder. Altitade of gage is 4,165 ft (from river-profile map).

Extremes.--Maximum discharge during period December to September, 2.140 cfs May 28 (gage 

 height, 3.70 ft); minimum, 29 cfs Sept. 28 (gage height, 1.81 ft).

Remarks.--Records good except those for periods of ice effect or doubtful or no gageheight record, which are fair. Many diversions above station for irrigation. Records 

of chemical-analyses, water temperatures, and sediment loads I'or the water year 1951 

are given in Water-Supply Paper 1200.

Rating table, Dec. 6, 1950, to Sept. 30, 1951, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

28

37

53

107

198

2.6 

2.8 

3.0 

3.3 

3.6

344

565

850

1,350

1,890

Discharge, in cubic feet per second, December 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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.

}

I alOO

1

J

*131

131

119

119

135

131

*123

123

152

152

152

147

139

135

123

131

127

123

107

110

110

108

110

111

120

123

3,792

122

7,520

Jan.

131 

130

130

140

150

ISO

130

*127

115

115

131

140

150

150

155

150

150

165

TBo" 180

160

160

165

175

175

*160

150

150

155

135

110

4,574

148

9,070

Feb.

90 

lITJ

120

125

150

170

190

200

180

200

220 *'2"IT

204

193

172

157

152

157

172

172

162

152

139

147

135

131

131

127

_

_

-

4,463

160

8,860

Mar.

123 

127

119

115

107

107

107

*115

107

111

139

152

TTT

143

139

143

135

135

131

115

115

131

*139

135

135

123

123

135

139

123

119

3,934

127

7,800

Apr.

127 

119

*123

107

104

107

123

115

107

101

104

95

92

92

!§.

92

*98

111

127

135

143

143

143

139

139

162

157

162

157

172

-

3,684

123

7,310

May

188 

193

183

*172 TB3-

255

320

434

592

579

565

*504

504

541

579

565

456

384

394

394

414

579

751

835

*717

547

776

1,500

1,760

1 , 620

1,530

19,225

620

38,130

June

1,490 

1,440

1,210

978

776

534

a640

a660

a750

a8SO

*978

952

776

702

647

60S

620

761

866

*1,010

1,030

914

914

746

675

541

541

517

480

468

-

24,192

806

47,980

July

456 *1T4"

364

354

336

304

279

250

244

224

198

183

*162

152

127

123

123

107

111

107

119

127

139

*139

135

131

107

95

ITS

111

127

5,963

192

11,830

Aug.

127 

115

183

412

364

230

167

152

157

139

127

115

107

98

85

82

79

76

74

T£

218

188

*230

147

172

104

107

98

349

711 "J3?

5,781

186

11,470

Sept.

198

m

alOO

a95

a92

a90

a90

a85

a80

a76

a72

69

67

69

67

53

47

43

*40

35

35

34

32

33

39

36

32

31

3T

36

-

1,929

64.3

3,830

Calendar year : Max Mln Mean Ac -ft

Water year : Max Mln. Mean Ao-ft

Peak discharge (base, 5,000 efs). No peak above base. 

* Discharge measurement made on this day.

a Doubtful or no gage-height record; discharge estimated on basis of records for Dolores River at 

Gateway, Colo.

Note. Stage-discharge relation affected by ice Dec. 25-28, 30, Jan. 2-7, Jan. 12 to Feb. 11.
152 COLORADO RIVER MAIN STEM

Colorado River near Cisco, Utah

Location. Lat 38°49', long. 109°18', in NW£ sec. 17, T. 23 S., R. 24 E., on left bank 

1 mile downstream from Dolores River, 11 miles south of Cisco, 97 miles upstream from 

Green River, and 235 miles upstream from San Juan River.

Drainage area.--24,100 sq mi, approximately.

Records available.--October 1913 to November 1914 (published as Grand River near Moab), 

November 1914 to September 1917 (published as Grand River near Cisco), October 1922 to 

September 1951. Also calendar year estimates 1895-1910 and monthly estimates January 

1911 to September 1913 and October 1917 to September 1922.

Gage. Water-stage recorder. Altitude of gage is 4,090 ft (from river-profile map). Prior 

fo Nov. 10, 1914, several staff and chain gages at bridge near Moab, 31 miles downstream, 

at datum 3,937.73 ft above mean sea level.

Average discharge.--33 years (1913-17, 1922-51), 8,078 cfs.

Extremes.--Maximum discharge during year, 29,700 cfs May 30 (gage height, 10.81 ft); minimum daily, 1,400 cfs Feb. 2.

1913-17, 1922-51: Maximum discharge, 76,800 cfs June 19, 1917 (gage height, 19.7 ft); 

minimum recorded, 558 cfs July 21, 1934 (gage height, 0.44 ft).

Maximum discharge known, about 125,000 cfs July 4, 1884, from flood record at Fruita, 

Colo.

Remarks.--Records- excellent except those for periods of ice effect, or doubtful gage-height 

record, which are fair. Discharge measurements generally made once a week. Diversions 

above station for irrigation and power, including transmountain diversions. Records of 

chemical analyses, water temperatures, and sediment loads for the water year 1951 are 

given in Water-Supply Paper 1200.

Revisions (water years).--W 918: 1913, 1937.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7 

8

9

10

11

12

13

14 

15

16

17 

18

19

20

21 

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2,350 

2,220

2,200

2.400

2,370

2,320

2,300 

2,190

2,110

2,090

1,980

1,700

1,820

1,990 

1,770

1,780

1,800 

2,140

1,980

2,040

1,990 

1,980

1,860

1,980

1,960

2,010

liTOO

1, 78O

2,040

2,090

2,200

63,140

2,037

125,200

Nov.

1.950 

2,110

2,040

2,140

2,030

3,300

3,440 

2,200

2,200

2,340

2,500

2,690

2,690

2,830

3,590

2,920

2,900 

2,810

2,940

3,380

3,570 

3,250

3,230

3,550

3,470

3,080

2,850

2,990

2,740

2,640

-

81,350

2,712

161,400

Dec.

2,660 

2,800

2,740

2,810

2,660

2,520

2,520 

2,520

2,590

3,050

3,070

3,070

2,960

2,800 

2,850

3,190

5.260 

3,250

2,990

2,660

2,740 

2,830

2,760

2,560

2,450

2,420

2,280

2,220

2,250

2,470

2,470

84,420

2,723

167,400

Jan.

2,640 

2,690

2,400

2,300

2,370

2,730

2,490 

2,200

2,070

1,800

1.780

2,190

2,200

2,250 

2,300

2,270

2,250 

2,350

2,500

2,700

2,700 

2,780

2,800

2,780

2,810

3,010

5.140

2,980

3,030

2,500

2,000

77,010

2,484

152,700

Feb.

1,600 

1.400

1,600

1,900

2,300

2,950

3,300 

5.600

3,300

3,200

3,300

3,400

3,250

3,000 

2,750

2,650

2,570 

2,740

2,870

2,960

2,660 

2,500

2,680

2,800

2,730

2,810

2,800

2,560

_

_

-

76,180

2,721

151, 100

Mar.

2,440 

2,660

2,660

2,640

2,760

2,640

2,320 

2,640

2,710

2,850

2,800

2,830

2,810

2,560 

2,450

2,800

2,710 

2,540

2,610

2.280

2,300 

2,400

2,760

2,730

2,620

2,520

2,520

2,570

2,740

2.900

2,620

81,390

2,625

161,400

Apr.

2,620 

2,620

2,490

2,250

2,220

2,500

2,830 

2,710

2,590

2,370

1,950

1,960

1,800

1,700 

1,640

1.560

1,640 

1,960

2,390

2,640

2,900 

3,170

3,950

3,760

3,680

4,510

5,080

5,230

4,970

5,450

-

87,120

2,904

172,800

May

6,220 

5,850

5,170

4,430

5.950

4,190

5,360 

7,430

9,270

9,690

9,630

9,720

10,300

10,500 

10,400

9,560

 9, 040 

9,780

11,000

11, 900

14, 500 

15, 900

16,300

16,200

16,600

16,600

18,000

22, 100

27,400

2,9.100

26,400

382,090

12,330

757,900

June

25,500 

24,900

21,500

18,200

15,700

14,200

15.400 

13,800

15, 100

15, 800

16,300

16,000

14,700

14, 300 

15, 000

16,000

18,200 

22,000

25, 100

25,800

27,700 

28,400

28.800

25,400

21,900

20,500

20,700

20,300

19,000

17,500

-

591,500

19,720

1,173,000

July

16.600 

15,700

14, 000

13, 600

13,400

12,700

11, 400 

10,900

10, 500

9,750

9,040

8,030

7,460

7,100 

6,640

6,340

6,080 

6,400

7,000

7,230

7,180 

6,880

7,530

7,300

6,690

5,970

5,250

4.870

5,190

5,060

5,120

266,910

8,610

529,400

Aug.

4,890 

4,810

4,870

5,780

7.720

6,860

6,060 

5,500

4,890

4,470

4,050

3,700

3,280

2,590 

2,440

2,340

2,200 

2,110

1,980

1.950

2,150 

2,370

2,760

2,980

3,010

2,740

2,690

2,620

5,410

6,640

a4, 300

120, 140

3,875

238,300

Sept.

d4. 80C 

d3, 70C

d3,25C

d2,90C

d2, 60C

d2,40C

d2, 110 

dl, 98C

1,92C

1,840

1,750

1,590

1,650

1.560 

1,630

1,750

1,750 

1,840

1,870

1,960

2,060 

1,990

1,990

2,140

2,190

2,140

2,010

1,950

2,050

2,470

-

65,800

2,193

130,500

Calendar year 1950 : Max 23,300 Min 1,190 Mean 5,627 Ac-ft 4,074,000

Water year 1950-51: Max 29,100 Min 1,40O Mean 5,417 Ao-ft 3,921,000

Peak discharge [base. 26.OOP cfs). May 30 (1:30 p.m.) 29,700 ofs (10.81 ft); June 23 (11:30 a.m.) 

29,800 cfs (10.65 ft).

d Doubtful gage-height recordj discharge computed on basis of records for other Colorado River stations .

Note. Stage-discharge relation affected by ice Jan. 13-21, Feb. 1-16.
TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER 

Rock Creek near Moab, Utah

153

Location.--Lat 38°43'45", long. 109°22'30", in NEir sec. 16, T. 24 S., R. 23 E., on left

DanK a quarter of a mile upstream from mouth and 14 miles northeast of Moab. 

'Records available.--July 1950 to September 1951.

gage.--water-stage recorder. Altitude of gage is about 4,070 ft.

Extremes. 1950: Maximum discharge during period July to September, 1,270 cfs Sept. 19 

(gage height, 4.74 ft), from rating curve extended above 6 cfs on basis of slope-area 

determinations at gage heights 3.53 and 8.26 ft; minimum daily. 0.1 cfs on many days. 

1950-51: Maximum discharge during year, 3,330 cfs Aug. 29 (gage height, 8.26 ft), 

from rating curve extended above 6 cfs as explained above; no flow Sept. 6-15.

Remarks.--Records fair except those for periods of ice effect or doubtful or no gage-height 

record, which are poor. Diversions above station for irrigation.

Rating table, July 1, 195O, to Sept. 30, 1951 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used July 1 to Dec. 5, 1950,

Aug. 5 to Sept. 30, 1951)

1.1 0

1.2 .4

1.3 2.4

1.4

1.5

1.6

2.0 

2.4

50

91

212

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

9

10

Ac-f1

July

aO.l

a.l

.1

.1

.1

.1

.2

*46

ITS. 4

5.8

Aug.

dO.2

d.3

.4

.7

.3

.2

*.2

.1

.1

.1

Sept.

0.1

.1

** .

Day

11

12

13

14

15

16

17

18

19

20

July

7.2

4.9

6.2

7.2

11

11

5.3

4.5

4.5

2.2

Aug.

0.1

Sept.

0.2

.2

.2

.2

.1

.1

.1

.1

98

a2".0

Day

21

22

23

24

25

26

27

28

29

30

31

July

1.0

.2

d.2

d.l

d.l

d.l

d.2

d.2

d.l

d.2

d.2

3.95

243

Aug.

**0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4.3

0.14

9.0

Sept.

al.5

al.5

al.5

al.5

al.5

*al.5

1.4

3.8

3.4

2.8

-

122.6

4.09

243

Peak discharge- (base, 10O cfs) . July 8 (6:30 a.m.) 690 cfs (3.56 ft); Sept. 19 

(10 a.m.) 1,270 ofs (1.74 ftj.

* Discharge measurement made on this day.

** Field estimate made oa this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement 

and records for nearby streams.

d Doubtful gage-height record; discharge computed on basis of records for nearby 

stations.

1950-51

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2.8

3.1

3.8

5.8

7.2

5.8

5.3

7.2

7.8

7.8

a6.8

a6.0

a5.0

a4.0

a3.0

*a3.4

3.4

2.4

.8

.8

1.0

.8

.7

2.4

2.4

2.4

d2.0

dl.7

d2.2

d4.0

115.2

3.72

228

Nov.

4.9

T75

*3.8

4.1

2.8

d2.5

d2.5

d2.3

d2.0

dl.O

bl.O

bl.5

b2.0

b3.0

4.5

3.8

3.1

3.1

4.1

*2.8

2.8

2.2

1.9

1.9

1.9

1.9

1.9

1.9

1.6

1.4

-

78.7

2.62

156

Dec.

1.2

1.0

1.2

1.2

1.2

bl.O

bl.O

3.4

TTJ

3.4

3.4

*3.4

3.4

3.1

3.1

3.1

3.1

2.2

2.2

2.2

1.9

1.6,

1.3

.8

l.S

1.9

b2.0

b2.0

b2.0

b2.0

b2.2

66.4

2.14

132

Jan.

b2.5

2.8

3.4

3.8

*37S

2.4

1.9

1.9

1.6

2.4

3.8

3.4

3.1

a3.0

a3.1

a3.2

a3.3

3.4

3.4

*2.8

1.9

3.1

3.4

3.1

2.8

2.4

2.4

2.4

3.4.

b2.0

al.O

86.9

2.8Q

172

Feb.

aO.5

aO5

a2.0

a3.0

a3.5

a3.8

a4.0

*a4.0

4.1

3.8

3.8

4.1

3.4

2.8

2.8

3.4

3.4

3.8

4.1

3.8

3.8

3.4

3.8

4.9

ITT

3.1

4.5

4.1

_

-

-

96.8

3.46

192

Mar.

3.8

3TS

3.8

3.8

3.8

3.4

3.1

3.1

2.8

3,1

3.1

3.1

*3.8

3.4

3.4

2.8

2.8

2.2

1.9

1.9

1.6

1.4

.8

1.2

1.0

.4

.2

.3

.3

.3

.3

70.7

2.28

140

Apr.

0.2

aTZ

a. 2

a. 2

a. 3

**.3

.3

.2

.2

.2

.2

.2

.3

.3

.2

.3

.3

.3

**.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.3

.3

-

7.8

0.26

15

May

0.3

.3

**.3

.3

.3

.3

.3

.4

.4

.4

.4

.3

.3

.4

.3

.2

.2

.2

.2

.2

.3

.2

.2

.2

.2

.2

.2

.1

.T

.1

**.3

8.1

0.26

16

June

0.3 -T5

.3

July

0.2

.2

.2

.3 .2

.2 .2

.3

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.1."Z

.1

.1

.1

.1.1

*.2

.2

.2.'2

.2

.2

.2

-

5.9

0.20

12

.2

.2

.2

.2

.2

.2

,2

.2

.2

.2

.2

a.l

*.T

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

 1

6.1

0.20

12

Aug.

0.3

.3

.4

.4

5.9

.7

.3

.2

.?

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

3.3

1.0

.4

.2

.2

.2

.2

*182

 a. 3

a. 3

199.2

6.43

395

Sept.

0.3

.3

.2

*.2

.2

0

u

0

0

0

0

0

0

0

0

.2

1.0

1.2

3.8

I7Z

.6

.3

.7

.3

*.2

.1

.1

.1

3.4

3.4

17.8

0.59

35

Calendar year 1950 : Max - Mln - Mean - Ae-ft

Water year 1950-51: Max 182 Mln 0 Mean 2.08 Ac-ft 1,500

cfs Peak (8.26 discharge ft). (base, 100 efs). Aug. 22 (5:45 p.m.) 152 cfs (2.22 ft); Aug. 29 (2:20 p.m.) 3,330 

* Discharge measurement made on this day.

** Field estimate made on this day.

a No gage-height record; discharge estimated on basis of 2 discharge measurements, weather records, 

and records for nearby streams.

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge computed on basis of records for nearby stations.
154 TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER

Castle Creek above diversions, near Moat, Utah

Location. Lat 38°35'50", long. 109°16'10", in SE£ sec. 28, T. 25 S., R. 24 E., on left 

bank 1 mile east of La Sal National Forest boundary and 15 miles east of Moab,

Records available.--July 1950 to September 1951. 

Gage.--Water-stage recorder and concrete control.

Extremes. 1950: Maximum discharge during period July to September. 3.0 cfs Sept. 1 (gage 

height, 0.86 ft); minimum daily, 0.2 cfs Sept. 29.

1950-51: Maximum discharge during year 3.2 cfs Apr. 10 (gage height, 0.89 ft); mirimum daily, 0.1 cfs on several days in October and April, but may have been less during 

period of no gage-height record.

Remarks.--Records good except those for periods of doubtful or no gage-height record,

which are fair.

Rating table, July 11, 1950, to Sept. 30, 1951 (gage height, 

in feet, and discharge, in cubic-feet per second

.3

1.3

Discharge, in second-feet, 195O-51 

1950

Day

1

Z

3

4

S

6

7

8

July

_

_

_

_

_

_

_

Aug.

1.1

1.1

1.1

1.0

1.0

1.0

1.0

.9

Sept.

0.6

.6

.6

.6

.6

.6

.5

.5

Day

9

10

11

12

13

14

15

16

July

_

_

*2.7

2.5

2.3

2.3

2.3

2.3

Aug.

0.8

.8

.9

.9

.9

.8

*.6

.6

Sept.

0.5

.5

**.4

.4

.4

.4

.3

.3

Day

17

IB

19

20

21

22

23

24

July

2.3

2.3

2.3

2.0

2.0

2.0

1.8

1.8

Aug.

0.6

.6

.5

.6

.6

.5

.5

.4

Sept .

0.3

.3

.8

7F

.4

.3

.3

.3

Day

25

26

27

28

29

30

31

July

1.8

*: .7

.7

.7

.5

.3

: .3

Aug.

0.4

.4

.4

**.4

.5

.4

.5

Sept.

0.3

.3

.3

.3

.2 73"

_

12.7

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

7T

d.l

d.l

.1

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.2

.2

.3

7T

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.3

6.2

0.20

12

Nov.

0.3

.3

.2

7?

.2

.2

**.2

.3

d.2

d.2

d.2

d.2

d.2

.2

.3

.2

.3

.3

.5

7T

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

-

8.0

0.27

16

Dec.

0.3

d.3

d.3

.3

d.3

d.3

.3

.3

.3

.3

.3

.3

.3

(»«)

 d.3

9.3

0.30

18

Jan.

(**)

0.3

(**)

9.3

0.30

18

Feb.

0.2

*.2

.2

.2

_

_

-

5.6

0.20

11

Mar.

0.2 -T?

.3

TT

.3

.3

.3

.3

.3

.3

.3

d.3

.3

**.3

.3

.3

d.2

d.2

d.2

.3

.3

.2

.2

.2

.3

.2

.2

.2

.2

.2

.2

7.9

0.25

16

Apr.

0.2

.2

.2

.1

7T

*.l

.1

,l

.1

.3

.5

7T

.3

.3

.2

.2

.2

.2

.2

.2

.3

.2

.2

.2

**.2

.3

.3

.3

.3

.3

-

6.8

0.23

_ 13

May

0.3

.3

.3

.3

.3

.3

.272"

.2

.2

.2

.2

.2

.2

.3

.2

.2

.575"

.5

.5

.5

*.5

.5

.4

.4

.5

.5

.5

.4

.4

10.7

0.35

21

June

~X0.5

.5

.675-

.5

.5

*.5

.5

.5

.6

.6

.6

.6

.6

.5

.5

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.5

*.5

.5

-

16.2

0.54

32

July

0.5

.5

.6

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.5

.5

.87B"

.6

.6

*.6

.5

.5

.5

.5

.5

.5

.3

.2

7?

.2

.2

15.3

0.49

30

Aug.

0.3

.3

.3

.3

.3

.2

7?

.2

.5

.6

.6

.5

.5

*.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.6

.5

.3

13.3

0.43

26

Sept.

0.3

fy

.3

*.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

7T

.5

.5

.5

.5

.5

.5

-

12.1

0.40

24

Calendar year 1950 : Max - Mln - Mean - Ac-ft -

Water year 1950-51 : Max 0.8 Mln - Mean 0.33 Ac-ft 237

* Discharge measurement made on this day.

** Field estimate made on this day.

d Doubtful gage-height record; discharge estimated on basis of 1 field estimate, engineer's note 

weather records, and records for nearby streams.

Note. No gage-height record Jan. 1 to Feb. 25; discharge estimated on basis of 2 field estimate 

weather records and records for nearby streams.
TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER

Castle Creek near Moab, Utah

Location.--Lat 38°40'45", long. 109°26'55", in NE£ sec. 35, T. 24 S., R. 22 E., on right 

oanic at highway bridge half a mile upstream from mouth and 8f miles northeast of Moab.

Records available.--July 1950 to September 1951.

uage.--water-stage recorder. Altitude of gage is 4,060 ft (from river-profile map).

Extremes.--1950: Maximum discharge during period July to September, 539 cfs Sept. 19 

(gage height, 5.08 ft); minimum daily, 0.4 cfs Aug. 22.

1950-51: Maximum discharge during water year, 4,360 cfs Aug. 29 (gage height, 10.35 

ft), from rating curve extended above 9 cfs on basis of slope-area determinations at 

gage heights 4.45 and 10.35 ft; minimum daily, 0.1 cfs on many days during June and 

July.

Remarks.--Records fair except those for pericds of ice effect or no gage-height record, 

wnicn are poor. Small diversions above station for irrigation.

Rating tables, July 10, 1950, to Sept. 30, 1951 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used Dec. 31, 1950, to Jan. 19, 1951, 

Apr. 1-20, June 28 to Aug. 3, 1951)

July 10 to Sept. 18, 1950, 

Aug. 30 to Sept. 30, 1951 Sept. 19, 1950, to Aug. 29, 1951

1.1

1.2

5.1 

9.8

Discharge, In

.5 .2

.6 .9

.7 2.1

:ublc feet per s 

1950

1.0 

1.3 

1.6 34

1950-51

2.5 

2.7

100

120

Day

1

2

3

4

5

6

7

8

Tota

Ac-f

July

_

-

-

-

-

-

-

-

L. . . . .

Aug.

2.1

1.9

1.2

1.1

.9

.9

1.1

1.5

Sept.

0.8

.8

.7

.6

.¥

.7

.8

.8

Day

9

10

11

12

13

14

15

16

July

*3.4

3.6

3.9

3.1

2.2

2.5

2.5

Aug.

0.5

.6

.7

.8

.9

1.1

*.9

.7

Sept.

0.8

1.2

**!.!

.9

1.1

.8

.9

1.1

Day

17

18

19

20

21

22

23

24

July

2.5

2.5

3.4

3.1

2.8

3.1

2.5

*2.5

Aug.

0.7

.7

.7

.7

.7

.4. 5

.6

Sept.

1.4

.9

27

10

7.9

6.7

7.3

7.0

Day

25

26

27

28

29

30

31

July

1.5

27T

2.2

2.2

2.5

2.5

2.1

-

Aug.

0.6

.6

.6

**.7

.7

.7

.8

53

Sept.

6.4

*6.2

5.6

5.6

5.6

6.2

_

3 92

233

Peak discharge (base. 100 efs).--Sept. 19 (3:30 p.m. 

* Discharge measurement made on this day. 

* Field estimate made on this day.

539 cfs (5.08 ft).

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

5T4

5.4

5.6

5.6

5.6

5.6

5.6

5.4

5.4

5.1

4.8

4.8

4.8

4.8

4.8

5.1

4.0

4.0

3.9

3.9

3.9

3.9

3.9

3.7

3.9

3.9

3.7

3.7

3.5

143.6

4.63

285

Nov.

3.5

3.5

*3.3

373

3.7

4.3

4.6

4.3

4.8

6.2

6.7

7.3

7.3

7.0

7.0

7.3

7.3

7.3

7.3

7.6

7.9

7.9

7.9

7.9

7.6

*7.9

8.2 BT2

8.2

-

192.3

6.41

381

Dec.

8.2

775

.9

.6

.6

.6

.6

.0

6.4

6.4

6.

6.

6.

6.

6.

6.

6.

5.9

*5.4

5.6

5.9

5.6

5.9

6.2

6.4

7.3

7.0

6.4

5.9

6.2

207.5

6.69

412

Jan.

6.4

6.4

6.4

6.4

7.0

a6.4

aS.O

a5. 6

a5. 5

a575

a6.0

a6.6

aS.O

a6.0

a6.7

*7.3

7.0

7.1

7.0

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.3

7.6

7.6

7.9

210.1

6.78

417

Feb.

b7.5

b7.5

7.9

7.9

8.2

8.4

8.7

*8.7

8.7

8.7

9.3

¥7?

7.6

7.3

77§

7.6

7.6

8.4

7.9

8.2

8.2

7.9

8.2

8.2

*7.9

7.9

7.6

_

_

-

226.0

8.07

448

Mar.

7.3

7.0

7.3

7.3

7.3

7.0

7.0

7.0

7.0

7.0

7.0

7.6

7.9 *T75

7.6

7.3

7.3

7.0

7 .0

e.4

e.7

e.4

e.4

5.6

5.4

4.6

4.3

3.7

3.1

2.3

200.0

6.45

397

Apr.

0.4

.3

.3

.2.-?

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

1.4

2.0

2.0

3.5

5.4

-

19.7

0.66

39

May

5.6

BTS

*5.4

4.8

4.8

4.6

2.2

1.1

T73

1.4

1.4

1.4

1.4

1.4

1.5

2.6

3.5

5.1

4.6

4.0

4.0

*4.3

a4.0

a3.5

a3.0

a2.5

a2.2

a2.0

al.8

al.8

97.1

3.13

193

June

al.9

al.9

a2.0

a2.2

a2.3

a2.1

al.9

*1.9

1.9

1.7

1.9

1.6

.7

.5

.4

.4

.4

.4

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

-

28.2

0.94

56

July

0.1 *T7T

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.8

.5

.1

.1

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

*.2

4.7

0.15

9.3

Aug.

0.6 ~7E

*12

aS.O

a6.0

*5.1

4.8

3.1

2.1

2.1

2.3

2.0

i.9

1.7

1.6

1.4

1.3

1.3

1.1

2.1

2.1

3.1

3.3

3.1

2.1

1.1

.9

*116

a7.0

aS.O

206.1

6.65

409

Sept.

a4.5

T75

4.2

4.2

4.2

3.9

3.9

a3.7

a3.5

*3.4

3.4

3.1

2.5

2.8

2.8

2.5

2.2

1.6

1.2

.6

.4

.3

.3

.2 *. ?

.4

.4

.8

1.1

.4

-

67.2

2.24

133

Calendar year 1950: Max - Kin - Mean - Ac-ft

Water iter year year 1950-51: j.aso-si: Max wax 116 lib Mln win 0.1 u.j. Mean mean 4.39 4.3S Ac-ft AC-IT; 3,180 3,iau

Peak discharge (base, 100 efs). Aug. 3 (7 p.m.) 384 cfs (4.45 ft); Aug. 29 (2:45 p.m.) 4,360 of 

(10.35 .0.35ft) .

* Discharge measurement made on thi

** Field estimate made on this day. 

a No gage-height record; discharge estimated 01 

records for nearby streams, or interpolated. 

b Stage-discharge relation affected by ice.

an basis of engineer's notes, weather records, and
156 TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER

Mill Creek near Moab, Utah

Location. Lat 38°33'40", long. 109°30'45", In NE£ sec. 8, T. 26 S., R. 22 E., on left

 bank 800 ft downstream from North Fork, 2 miles southeast of Moab, and 4 miles upstream 

from mouth.

Drainage area. 76 sq ml, approximately.

Records available.--October 1914 to July 1919 (fragmentary), July 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage Is about 4,300 ft. Prior to Apr. 28, 1918,

 staff gage and Apr. 28, 1918, to Aug. 2, 1919, water-stage recorder In vicinity of 

present site at various datums.

Extremes. 1949: Maximum discharge during period July to September, 163 cfs July 9 (gage

 height, 3.44 ft); minimum, 12 cfs Aug. 27, 28, Sept. 12, 21.

1949-50: Maximum discharge during water year, 255 cfs Oct. 19 (gage height, 4.07 

ft), from rating curve extended above 56 cfs on basis of slope-area determinations at 

gage heights 5.26 and 8.24 ft; minimum recorded, 6.3 cfs Mar. 13, but may have been les<i 

durlng periods of ice effect. . ^.

1950-51: Maximum discharge during water year, 2,940 cfs Aug. 29 (gage height, 8.24ft), 

from rating curve extended above 56 cfs as explained above; minimum, 3.6 cfs Dec. 23.

Remarks.--Records good except those for periods of Ice effect or fragmentary or no gagehelght record, which are poor. No diversions above station.

Rating tables, July 1, 1949, to Sept. 30, 1951 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used Aug. 1-14, Sept. 4-30, 1950)

July 1, 1949, to Sept. 30, 1950 Oct. 1, 1950, to Sept. 30, 1951

1.6 

1.8 

2.0

5.8

9.4

15

2.3 

2.6 

3.0

29

54

102

1.6 

1.8 

2.0 

2.3

3.6

6.8

12

24

2.6 

3.0 

4.0 

5.3

45

220

482

Discharge, In cubic feet per second, 1949-51 

1949

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tote:

Mean

Ac- ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June July

a36

*38

40

40

36

33

31

28

41

2S

25

23

23

22

21

21

22

20

18

18

*19

19

20

22

29

23

21

20

19

18

17

791

25.5

1,570

Aug.

*17

16

16

16

16

20

21

22

26 ~Z2

20

19

19

18

*18

18

18

18

18

18

17

17

19

17

17

13 IBIS

13

13

*13

541

17.5

1,070

Sept.

13

TT

13

13

13

13

13

13

13

13

13

13

14

14

13

13

13

13

13

*13

13

13

13

13

13

13

13

13

14

*13

-

393

13.1

780

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

Peak discharge (base, 250 efs).--Ho peak above base. 

'* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.
"TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER

Discharge, in cubic feet per second, of Mill Creek near Moab, Utah, 1949-51--Continued

1949-50

157

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

12

12

12

11

TT

16

14

13

14

13

13

13

13

13

23

100

:*T5

14

13

14

15

15

15

15

15

15

14

14

522

16.8

1,040

Nov.

14

TJ

*14

14

13

13

13

13

13

13

13

13

14

14

14

14

14

14

13

13

13

13

13

13

13

13

13

13

13

13

-

400

13.3

793

Dec.

13

13

13

13

*13

13

13

13

13

13

11

10

10

10

10

10

11

12

14

T5

12

12

*13

13

13

10

9.5

9.0

8.5

 97T5

8.5

358.5

11.6

711

Jan.

(*)

' 8.0

 8.5

> 9.0

(*)

10

11

12

270.0

8.7

536

Feb.

12

11

IT

12

13

14

15

T?

*11

11

13

11

11

11

11

11

11

11

11

12

12

11

11

11

11

11

12

13

_

_

-

327

11.7

649

Mar.

11

12

TT

11

11

11

10

IT *11

11

11

11

10

11

12

11

11

11

11

11

11

11

*11

11

11

12

11

10

11

12

11

342

11.0

678

Apr.

12 T3"

14

14

14

14

17

20

20

17

16

17

20

21

22

19

21

22

24

*ZS

30

37

40

55

30

31

32

31

28

25

-

685

22.8

1,360

May

24

24

27

*48

?3

26

24

25

23

21

21

21

22

22

24

27

*32

32

34

34

34

35

35

36

35

33

29

28

27

26

28

886

28.6

1,760

June

Z9

30

30

29

27

26

28

27

*25

23

23

25

27

27

26

*26

26

26

25

24

23

23

22

22

22

21

20

19

*TS~ 18

-

737

24.6

1,460

July

17

16

15

14

14

*14

15

16

17

TS

15

15

14

14

13

13

13

13

13

12

11

TT

11

11

11

11

*12

12

11

11

11

412

13.3

817

Aug.

10~9~.9

9.9

9.6

9.6

9.9

9.6

9.4

*9.2

S7£

10

10

10

9.9

9.9

9.9

9.6

9.9

9.9

9.6

9.6

*9.6

9.6

9.6

9.6

9.9

9.6

9.6

9.4

9.2:

9.2

300.1

9.68

595

Sept.

8.8

8.8

8.6

8.4

8.6

8.6

8.6

*9.0

8.8

9.0

8.8

9.0

9.0

8.6

8.8

8.8

8.6

8.4

aTQ- 52

a9.0

a8. 5

8.2

8.2

8.2

8.2

8.0

*7.6

7.4

774

-

299.9

10.0

595

Calendar year 1949: Max - Min - Mean - Ac-ft -

Water year 1949-50: Max 100 Mln - Mean 15.2 Ac-ft 10,990

Peak discharge (base, 250 efs).--0et. 19 (7:40 a.m.) 255 cfs (4.07 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of engineer's notes.

Note.--Stage-discharge relation affected by ice Dec. 10, 13, 15-18, 22-24, Dec. 26 to Jan. 30,Feb. 2-4.

1950-51

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

7.5

8.0

8.2

8.2

7.5

6.8

7.0

7.3

7.3

7.3

7.0

6.8

*6 . 8

6.8

6.8

7.0

6.8

7.3

7.3

37.0

37.0

37.5

37.5

37.5

37.5

37.7

a8.0

38.0

a8.0

38.5

38.5

230.4

7.43

457

Nov.

a8.5

a8. 5

38.5 *8.4

8.4

8.4

8.4

8.4

8.0

6.8

7.3

8.3

8.6

8.6

8.6

8.0

8.9

8.6

9.7

971

8.6

8.0

7.5

7.5

7.7

7.7

7.5

7.5

7.5

7.7

-

245.2

8.17

486

Dec.

8.2

775

6.6

8.2

7.5

6.1

7.5

7.7

7.5

7.5

*7.5

7.5

7.5

7.5

7.5

7.3

7.3

6.8

8.0

7.3

6.7

6.4

5.9 srs

7.1

6.8

6.8

6.6 *7.7

7.2

8.0

224.3

7.24

445

Jan.

7.5

7.0

9.1

8.4

8.4

6.1

775

b8.5

b9.0

b9.0

b9.0 *8.0

b7.0

b7.0

b7.5

b8.0

8.6

8.4

8.2

6.8

7.7

9.1

8.4

8.2

8.2

7.7

8.0

8.6

9.4

S75

7.5

250.2

8.07

496

Feb.

b6. 5

b6.0

blTTS"

b7.5

bS.O

b8.5 *9.1

S7T

9.1

8.6

8.6

8.6

8.0

7.0

7.4

8.0

8.0

8.0

8.6

7.4

8.0

7.5

7.5

7.5

7.3

7.0

8.6

8.0

_

_

-

219.9

7.85

436

Mar.

*7.5

7.7

775

7.2

7.3

7.3

7.0

7.3

7.0

7.0

6.8

6.2

7.3

7.3

7.0

6.8

6.2

6.3

6.4

7.3

6.4

6.3

6.3

6.4

6.4

*6.4

6.1

5.7

573

6.8

6.8

209.9

6.77

416

Apr.

7.7

6.6

775

7.3

7.7

7.3

7.3

7.3

7.3

7.0

6.6

7.3

7.3

7.5

7.3

*7.3

7.5

7.5

7.7

8.9

10

9.1

8.4

8.6

8.6

14

11

10

15

18

-

260.4

8.68

516

May

13

12

11

10

TT

12 *11

11

11

12

12

13

12

12

12

12

11

10

10

12

14

13

14

12

12

15

17

19

*T7

16

16

395

12.7

783

June

*17TB~

14

14

12

10

10

11

11

12

12

11

10

9.7

8.9

9.7

11

12

12

13

13

13

13

12

11

11

10

*9. 9

9.9

9.7

348.8

11.6

692

July

9.7

1TT

8.9

8.6

8.2

8.2

8.0

8.2

*8.0

8.2

7.7

7.7

7.3

6.8

775

7.7

8.0

7.5

7.3

9.1

8.9

8.6

8.2

8.0

8.0

7.7

8.0

7.7

8.0

7.5

8.5

250.8

8.09

497

Aug.

8.4

13

20 *f22

320

310

alO

10

9.9

9.7

9.4

9.1

9.1

8.9

8.9

8.6

8.9

8.6

9.1

10

11

11

10

10 ' 10

9.4

9.1

9.7

*f407

"SBTJ

315

785.8

25.3

1,560

Sept.

314

sT2 *11

10

9.9

9.4

9.1

9.1

8.9

8.6

7.5

7.3

7.0

6.8

6.4

6.4

6.4

5.9 BTT

5.9

6.1

6.6

6.6

6.6

6.6

6.4

6.6

7.3

8.9

7.7

-

237 ;1

7.90

470

Calendar year 1950; Max 52 Mln Mean 13.6 Ac-ft 9,840

Water year 1950-51: Max 407 Mln 5.7 Mean 10.0 Ac-ft 7,250

Peak discharge (base, 250 efs). Aug. 4 (time unknown) 472 ofs (5.26 ft); Aug. 29 (time unknown) 

2,940 cfs (8.24 ftj.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of engineer's notes and records for nearby 

itreams.

b Stage-discharge relation affected by ice.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
158 TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER

Indian Creek near Montlcello, Utah

Location.--Lat 37°51', long. 109°31', in SWv sec. 4, T. 34 S., R. 22 E. (unsurveyed), on 

right bank 1 mile northwest of Indian Creek guard station and 10 miles west of Monticello.

Records available.--October 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,700 ft (from topographic map).

Extremes. Maximum discharge daring year, 20 cfs Aug. 29 (gage height, 1.74 ft), from 

rating curve extended above 10 cfs on basis of logarithmic plotting; minimum, 0.1 cfs 

Nov. 9, but may have been less during period of no gage-height; record.

1949-51: Maximum discharge, that of Aug. 29, 1951; minimum, that of Nov. 9, 1950.

Remarks. Records good except those for periods of no gage-height record, which are poor.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per secondl

0.8 

.9

1.0

1.1

1.0 

2.1

1.2 

1.4 

1.6

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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

.JL

.5

.5

.5

.5

*.5

.5

.5

.5

.5

.5

.5

.6

.6

.6

.6

.6

.5

.5

.6

.6

.6

.6

.5

.5

.5

.6

16.9

0.55

34

Nov.

0.6 

.6

.5

.5

.5

*.5

.5

.5

.3

.3

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

TS" .2

.2

.2

.2

-

9.9

0.33

20

Dec.

0.2 

.2

.2

.2

.2

.2

.3

.3

(*)

> .4

11.0

0.35

22

Jan.

 0.3

9.3

0.3

18

Feb.

 0.3

-

_

-

8.4

0.3

17

Mar.

. 0.3

, .4

10.9

0.35

22

Apr.

0.6 

.5

.6

.6

.6

.6

.6

.6

.7

.8

.7

.7

.8

.8

.9

1.0

1.0

1.0

1.1

1.2

1.2

1.1

1.2

1.3

1.3

1.3

1.2

1.5

1.8

l.f

-

29.0

0.97

58

May

1.6 

1.5

1.4

1.6

2.6

3.9

4.5

*4.3

4.5

4.7

4.9

4.7

3.9

3.5

3.2

2.9

3.2

3.7

4.1

4.5

5.5

5.7

6.0

6.0

6.8

7.6

8.1

8.3

8.6

8.3

8.1

148.2

4.78

294

June

fcf

6.8

6.2

5.7

5.3

5.1

4.9

4.9

4.9

4.9

*4.9

4.9

4.7

4.7

4.7

4.7

4.9

4.9

4.9

4.5

4.3

3.9

3.5

3.2

3.0

2.9

2.7

2.6

2.4

-

140.4

4.68

278

July

2.3

*2.0

1.9

1.9

1.8

1.7

1.7

1.6

1.5

1.5

1.4

1.4

1.4

1.3

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.8

.9

1.1

.9

.8

.8

.il

40.2

1.30

80

Aug.

0.8 

1.8

1.3

1.1

.9

.8

.7

.6

.6

.6

.5

.4

.4

.4

.3

.3

.4

.3

.3

.5

.5

.5

.4

.4

.3

.3

.3

.3

7 .2

3~7cf

1.9

28.1

0.91

56

Sept.

1.8 

1.7

1.7

1.6

*1.6

1.6

1.5

1.5

1.4

1.3

1.3

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.9

1.0

1.0

.9

.9

.9

.9

*.9

1.0

1.1

1.0

-

35.8

1.19

71

Calendar year 1950: Max 14 Min - Mean 3.06 Ac-ft 2 220

Water year 1950-51 : Max 8.6 Min - Mean 1.34 Ac-ft 970

* Discharge measurement made on this day.

Note. No gage-height record Dec. 3 to May 3, Sept. 3, 4; discharge estimated on basis of 1 discharge measurement, weather records, and records for other stations on Indian Creek.
TRIBUTARIES BETWEEN DOLORES RIVER AND GREEN RIVER 159

Indian Creek above Cottonwood Creek, near Monticello, Utah

Location.--Lat 37°59', long. 109°31>, in SW£ sec. 21, T. 32 S., R. 22 E., on right bank 

8 miles upstream from Cottonwood Creek and 12 miles northwest of Monticello.

Records available.--October 1949 to September 1951. 

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during year, 179 cfs July 27 (gage height, 6.31 ft); no flow 

for part of July 21.

1949-51: Maximum discharge, that of July 27, 1951; no flow for part of July 21,

Revisions.--The maximum discharge for the water year 1950 has been revised to 90 

cfs Sept. 19, 1950 (gage height, 5.58 ft), superseding figure published in Water-Supply 

Paper 1179.

Remarks.--Records good except those for periods of Ice effect or no gage-height record, 

which are fair. One diversion above station for irrigation of small farm.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

3.8

4.0

4.1

4.2

4.3

4.4

4.5

4.6

3.8

6.4

9.9

20

2.0

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.4

1.3

1.2

1.3

1.2

1.3

1.2

1.2

*1.2

1.2

1.2

1.2

1.2

1.3

1.3

1.3

1.4

1.4

1.4

1.5

T7S

1.5

1.5

1.4

1.4

1.4

1.5

1.5

1.5

41.6

1.34

B3

Nov.

1.5

1.6

TTtT

1.6

1.5

1.5

1.5

*1.5

1.5

1.3

1.2

1.2

1.3

1.4

1.4

1.4

1.4

1.5

1.4

1.6

1.4

1.4

1.4

1.4

i.q

1.0

1.0

1.0

1.0

1.0

-

40.6

1.35

81

Dec.

1.0

.9

7?

.9

.9

,9

1.0

1.0 1.1 1.1

1.2

1.2

1.2

1.3

1.3

*1.3

1.5

TTS

1.5

1.4

1.3

1.3

1.3

1.3

1.3

1.2

1.1

1.0

1.0

1.0

1.0

35.9

1.16

71

Jan.

(*)

, 1.0

.9

.9

.9

.9

.9

*.9

.9

.8

.8

.8

.8

.7

.7

.6

28.5

0.92

87

Feb.

0.5 75"

!e

.7

.7

.8

.9

.9

.9

1.0

1.0

.9

.8

.7

.7

.8

.8

.8

.8

*.8

.8

.9

.8

.7

.7

.7

.9

1.2 IT"

_

-

22.3

0.80

44

Mar.

0.9

1.0

.9

.8

.7

.8

.9

.8

.8

*.8

.8

.8

.8

.9

.9

.9

1.2

'.B

1.2

1.0

.9

.8

.9

.8

.9

.9

.8

1.2

.9

1.0

27.5

0.89

55

Apr.

1.3

1.0 Tn *1.2

1.2

1.2

1.0

1.2

1.3

1.3

1.2

1.2

1.4

1.4

1.6

1.8

1.9

1.9

2.0

*2.2

2.4

2.2

2.0

2.4

2.4

2.4

2.4

2.0

3.6 279"

-

53.2

1.77

106

May

2.7

2.5

 zTF 2.4

3.1

4.3

5.1

5.6

5.4

5.4

5.6

6.1

5.6

5.9

*5.6

5.1

4.8

4.8

5.9

6.1

6.8

7.8

8.8

8.8

9.6

10

12

*14

T?

14

13

213.3

6.88

423

June

13

T?

10

9.2

- 8.5

7.8

7.1

6.8

6.4

6.4

6.4

6.4

6.1

5.9

5.6

5.4

5.1

*5.4

5.4

5.1

4.8

4.6

4.3

3.8

3.4

2.9

2.5

2.2

1.9

1.8

-

176.2

5.87

349

July

1.8

1.6

1.5

1.3

1.0

1.0

.9

.8

.8

.7

.7

*.7

.7

.8

.7

.7

.6

.5

.2

^_1

.1

.8

.7

1.2

1.3

.8

*7.1 270"

1.6

1.5

1.4

35.6

1.15

71

Aug.

.0

.0

.5

.6

.0

.9

.9

*.8

.8

.8

.8

.7

.7

.6

75

.6

.6

.6

.6

4.6

1.0

4.0

1.0

.9

.8

.8

.7

.7

9.0

775

2.3

47.4

1.53

94

Sept.

2.2

m2.1

2.0

2.0

2.0

1.9

 1.9

1.9

1.9

1.8

1.7

1.7

1.6

1.5

1.5

1.4

.4

.2

.0

.0

.0

.9

.8

TtT

.8

.8

.9

1.0

1.0

-

43.8

1.46

87

Calendar year 1950: Max 26 Mln 0.4 Mean 5.23 Ac-ft 3,790

Water year 1950-51: Max 14 Mln o.l Mean 2.10 Ac-ft 1,520

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 18 to Jan. 22, Mar. 2-6. No gage-height record Nov. 10 to Dec. 15, Jan. 31 to Feb. 24, Aug. 21 to Sept. 7; discharge estimated on basis of 1 

discharge measurement, weather records, and records for nearby stations.
160 GREEN RIVER BASIN

Green River at Warren Bridge, near Daniel, Wyo.

Location. Lat 43°00', long. 110°07', in see. 8, T. 35 N., R. Ill W., on left bank 100 ft 

upstream from bridge on U. S. Highways 187 and 189 and 12 miles north of Daniel.

Drainage area. 468 sq mi.

Records available.--October 1931 to September 1951.

Gage. Water-stage recorder. Datum of gage is 7,468.09 ft above mean sea level, datum of T929.

Average discharge. 17 years (1933-36, 1937-51), 509 cfs.

Extremes.--Maximum discharge during year, 3,180 cfs June 19 (gage height, 4.93 ft); minimum 

daily, 92 cfs Nov. 10.

1931-51: Maximum discharge, 3,510 cfs June 26, 1932 (gage height, 5.08 ft); minimum 

recorded, 31 cfs Nov. 26, 1933 (gage height, 0.70 ft), from rating curve extended below 

120 cfs.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Diversions above station for irrigation of about 3,600 acres above 

station and 500 acres below station. Natural regulation by lakes.

Rating table, water year 1950-51, except period of loe effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used July 8 to Sept. 5)

1.3 105

1.8 230

2.0 310

3.0 930

4.0 1,930

5.0 3,290

Discharge, In cubic feet per second, water year' October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

330

301

292

306

310

310

320

301

296

292

283

274

274

283

278

283

278

*274

262

258

251

244

240

234

244

258

254

251

237

258

254

8,530

275

16,920

Nov.

251

25T

234

224

234

230

234

221

113

b92_

bllO

b!30

b!50

b!60

b!70

160

160

175

170

160

175

175

175

175

160

160

160

165

165

165

5,304

177

10,520

Dec.

165

160

140

135

120

125

145

160

170

170

165

165

170

170

170

165

160

*160

165

170

170

160

155

160

160

155

155

150

155

160

155

4,885

158

9,690

Jan.

140

145

150

150

140

135

135

135

135

135

140

140

145

150

*155

160

160

160

150

150

160

155.

160

150

150

150

150

150

145

135

125

4,550

147

9,020

Feb.

1-25

130

140

150

150

155

155

155

155

150

145

*140

140

140

140

145

150

150

150

150

150

150

150

150

150

140

140

135

_

-

4,080

146

8,090

Mar.

135

TW

145

150

150

155

160

160

165

165

165

165

170

ITO

165

160

155

150

150

*155

155

155

155

160

160

170

170

170

165

165

165

4,920

159

9,760

Apr.

165

170

180

185

195

190

180

175

170

165

160

170

190

220

255

260

255

250

260

315

400

380

340

360

*400

420

446

*500

632

626

8,614

287

17,090

May

554

470

434

482

644

881

970

923

*962

1,040

1,130

1,370

1,350

1,100

1,070

1,260

1,430

*1,680

1,870

1,890

2,000

2,150

2,290

2,440

2,550

2,510

2,500

2,730

*3,040

3.100

2,930

49,750

1,605

98,680

June

2,530

2,150

1,870

1,690

1,510

1,340

1,270

1,200

1,120

1.100

1,140

1,270

1,520

1,890

2,100

2,420

2,800

3,100

*5,170

3,050

2,870

2,700

2,430

2,150

1,980

1,910

1,880

1,890

1,940

1,940

-

59,930

1,998

118,900.

July

1,890

1,850

1,810

1,930

2,070

2,170

2,250

2,210

2,120

1,980

1,990

1,890

1,660

1,460

1,470

1,570

1,660

1,730

1,700

1,760

1,990

2,210

2,170

1,740

*1,470

1,410

1,460

1,540

1,570

1,650

1,670

56,050

1,808

111,200

Aug.

,560

,510

,500

,670

.690

,650

,590

1,380

1,190

1,030

888

790

748

734

720

685

644

626

632

644

678

650

*644

678

713

638

578

518

500

494

530

28,502

919

56,530

Sept.

572

596

566

518

476

460

450

440

440

430

420

410

390

375

360

330

315

*306

301

296

296

296

292

283

274

262

251

244

25T

254

-

11,154

372

22,120

Calendar year 1950: Max 3,160 Mln 86 Mean 647 Ac-ft 468,700

Water year 1950-51: Max 3,170 Mln 92 Mean 675 Ac-ft 488,500

Peak discharge (base. 1.800 cfs). May 30 (3 to 8 a.m.) 3,120 cfs (4.89 ft); June 19 (12 m.) 3,180 

cfs (4.93 ft); July 7 (3 p.m.) 2,270 cfs (4.37 ft); July 22 (12 p.m.) 2,300 cfs (4.47 ft); Aug. 4, 

(1 p.m.) 1,910 cfs (4.17 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Nov. 16 to Apr. 26 (stage-discharge relation affected by Ice during 

most of period;, Sept. 6-16; discharge computed on basis of 5 discharge measurements, weather records, recorded range in stage, and records for nearby stations.
GREEN RIVER BASIN 161

Beaver Creek near Daniel, Wyo.

Location.--Lat 43°00', long. 110°09', in sec. 18, T. 35 N., R. Ill W., on left bank at 

Mans on Ranch, half a mile downstream from forks, 1 mile upstream from mouth, 2 miles 

southwest of Warren Bridge, and 11 miles northwest of Daniel.

Drainage area.- 141 sq mi.

Records available.--.November 1938 to September 1951 (nc winter records 1943). 

Gage.--Water-stage recorder. Altitude of gage is 7,440 ft (from topographic map). 

Average discharge.--11 years (1939-42, 1943-51), 32.1 cfs.

Extremes.--Maximum discharge during year, 726 cfs May 12 (ga£

 daily, 7.5 cfs Oct. 23, 24.

1938-51: Maximum discharge, 1,540 cfs May 16, 1950 (gage height, 8.34 ft), from 

rating curve extended above 1,060 cfs; no flow at times in most years.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 wTTTch are fair. Water rights totaling 152.38 cfs (priorities 1897 to 1917) for irrigation of about 10,750 acres adjudicated by Wyoming for diversion above station.

Revisions (wafer years).- W 1149: 1942(M), 1943, 1944, 1947(M).

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 5 May 6 to Sept. 30

3.2

3.3

3.8 

4.5

50

132

5.0 204

6.0 420

7.0 695

3.0 5.0

3.1 8.5

3.4 24

4.0 76

4.5 138

5.0 214

7.0 706

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

17

14

12

10

10

10

11

12

11

10

9.5

9.0

9.5

10

10

9.5

9.5

*9.5

9.0

6.5

8.0

8.0

7.5

TTK

12

14

11

14

 5T 25

20

362.0

11.7

718

Nov.

16

17

15

18

20

20

24

28 2T

17

16

14

*TF

15

15

17

17

20

22

22

21

20

20

21

21

21

21

21

19

18

-

572

19.1

1,130

Dec.

C)

20

620

20

1,230

Jan.

18

(*)

558

18

1,110

Feb.

(*)

13

_

_

-

364

13

722

Mar.

16

(*)

496

16

984

Apr.

26

 2T 25

36

50

66

76

90

110

150

207

262

248

230

224

215

220

*252

325

320

290

201

224

256

210

224

242

300

335- 475

-

5,928

198

11,760

May

264

196 TS9"

250

398

497

434

391

*419

479

502

599 TS6~

258

234

266

319

*303

277

245

409

435

290

277

258

245

270

362

380

385

372

10,729

346

21,280

June

388

500

508 4~4"0~

331

*252

198

156

137

120

120

145

163

163

159

162

185

201

190

188

*177

160

166

145

145

114

94

82

69

7?

-

5,932

198

11,770

July

74

67

47

44

39

31

21

16

14

13

90

152 ~~58

28

18

13

9.8

*9.0

3T~7.8

58

30

18

12

9.0

9.4

12

14

13

14

13

987.0

31.8

1,960

Aug.

10

50

56

222

TT?

53

40

33

59

44

31

27

19

14

13

11

9.8

9.0

ID-8.5

22

*39

56

62

52

32

22

20

24

41

52

1,253.3

40.4

2,490

Sept.

47

33

25

20

18

16

20

21

16

14

13

19

19

18

18

16

16

*16

16

14

13

13

14

14

13

12

T?

12

14

16

-

528

17.6

1,050

Calendar year 1950: Max 1,020 Mln 0.4 Mean 73.4 Ac-ft 53,150

Water year 1950-51: Max 599 Mln 7.5 Mean 77.6 Ac-ft 56,200

Peak discharge 

(6.42 ft); May

ii: Max '599 Mln T'.S Mean 77!6 Ac-ft 56j200

(base, 140 efs). Apr. 20 (8:30 p.m.) 442 cfs (6.09 ft); Apr. 28 (8:30 p.m.) 525 cfs

x -.._ * ,, _, (4:30 a.m.) 656 cfs (6.87 ft); May 12 (7:30 a.m.) 726 cfs (7.07 ft); May 21 (9 p.m.) 

539 cfs (6.38 ft); June 2 (7 p.m.) 536 cfs (6.37 ft); June 18 (2 p.m.) 206 cfs (4.95 ft); July 12 

(5 a.m.) 225 cfs (5.06 ft); Aug. 4 (3 p.m.) 427 cfs (5.95 ft).

* Discharge measurement made_ on this day.

Note. Stage-discharge relation affected by Ice Nov. 18 to Apr. 10 (no gage-height record Jan. 

29-31, Mar. 13-19; discharge estimated on basis of 1 discharge measurement, weather records, and records for nearby stations).
162 GREEN RIVER BASIN

Horse Creek near Daniel, Wyo.

Location.--Lat 42°56', long. 110°12', in sec. 10, T. 34 N., R. 112 W., on left bank 12 

miles northwest of Daniel.

Drainage area. 124 sq mi.

Records available.- October 1931 to September 1951 (no winter records 1931-39, 1943, 1945).

Gage.--Mater-stage recorder. Datum of gage is 7,349.61 ft above mean sea level, datum of 

T929. Prior to Nov. 30, 1948, at site 350 ft downstream at datum 0.27 ft higher.

Average discharge.--10 years (1939-42, 1943-44, 1945-51), 63.2 cfs.

Extremes.--Maximum discharge during year, 1,230 cfs May 29 (gage height, 4.42 ft), from 

rating curve extended above 930 cfs; minimum daily, 16 ofs Dec. 5.

1931-51: Maximum discharge, 1,670 cfs May 31, 1936 (gage height, 3.53 ft, site and 

datum then in use), from rating curve extended above 800 cfs; maximum gage height, that 

of May 29, 1951; minimum daily discharge, 1 cfs July 22, 23, 1940.

Remarks. Records good except those for period of ice effect or no gage-height record, 

wHich are fair. Water rights totaling 232 cfs (priorities 1889 to 1937) for irrigation 

of about 16,300 acres adjudicated by Wyoming for diversion above station.

Revisions (water years).--W 1089: 1946.

Rating tables, water year 1950-51, except period of Ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

Oct. I to Apr. 25

1.4 17.5

1.5 27

1.6 39

Apr. 26 to Sept. 30

1.3

1.4 

1.6 

2.0

49

116

2.5 265

3.0 470

4.0 985

4.3 1,155

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

&

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

Oct.

~Z5 28

23

22

22

23

27

26

25

*25

24

24

23

22

21

20

20

19

19

19

19

18

TS

19

21

21

22

25

26

24

24

694

22.4

1,380

Nov.

23

25

24

25

24

24

25

38 *30"

21

22

24

24

23

20

21

22

23

24

25

23

24

25

25

25

25

25

23

25

24

-

731

24.4

1,450

Dec.

20

19

18

17

IS

17

*19

20

20

20

21

21

21

21

20

20

21

21

22

2T

21

20

20

20

20

21

21

21

21

21

20

621

20.0

1,230

Jan.

19

18

T5

20

21

20

19

19

19

19

19

19

20

20

20

20

*20

20

20

19

19

20

20

20

20

20

20

19

18

18

18

601

19.4

1,190

Feb.

18

15

20

21

21

22

23

23

24 5T

24

24

24

*24

23

23

23

23

23

23

23

23

22

22

22

22

22

22

_

_

-

627

22.4

1,240

Mar.

22

22

21

21

21

21

22

22

22

22

20

18 T8-

20

*20

20

21

20

20

20

21

21

21

21

21

22

23 ?r

22

21

21

648

20.9

1,290

Apr.

21 2T

28

37

56

70

90

110

130

160

140

138

155

185

205

*175

210

240

250

250

210

180

170

215

*208

196

*190

196

258

TK

-

4,707

157

9,340

May

169

145

138

T5S

206

248

251

240

240

*251

290

352

352

286

254

272

312

389

492

520

575

*605

675

745

*792

814

*880

1,030

1,140

514

853

14,588

471

28,930

June

776

665

545

452

389

340

316

290

279

308

364

474

510

610

655

798

'BT? 902

740

700

*605

550

466

416

398

380

344

340

324

272

-

15,050

502

29,850

July

 23T 234

227

234

220

193

175

153

135

114

199

193

135

108

94

112

130

*106

90

126

143

106

82

70

£7

67

91

104

86

88

91

4,207

136

8,340

Aug.

83

98

112

TSo" 161

104

93

86

94

83

75

69

62

58

55

52

48

45

45

48

55

*58

66

69

64

56

48

50

52

58

58

2,245

72.4

4,450

Sept.

54

T5

42

40

37

37

41

36

33

30

29

28

29

27

27

26

*25

26

26

25

24

26

26

25

24

23

27

23

24

23

-

907

30.2

1,800

Calendar year 1950: Max 746 Mln 11 Mean 110 Ac-ft 79,760

Water year 1950-51: Max 1,140 Mln 16 Mean 125 Ac-ft 90,490

Peak discharge (base, 500 cfs).--Hay 13 (6 a.m.) 380 cfs (2.80 ft); May 29 (11:30 a.m.) 1,230 cfs 

(4.4Z ft)j June 17 (1 p.m.) 1,030 cfs (4.09 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 9 to Jan. 24. No gage-height record Jan. 25 

to Apr. 25 (stage-discharge relation affected by ice during most of period); discharge estimated 

on basis of 4 discharge measurements, weather records and records for nearby stations.
GREEN RIVER BASIN 

Cottonwood Creek near Daniel, Wyo.

163

Location.--Lat 42°47' ) long. 110°09', in sec. 11, T. 32 N., R. 112 W., on right bank 

l| miles downstream from forks and 7 miles southwest of Daniel.

Drainage area.--2Q4 sq mi.

Records available .--October 1938 to September 1951 (no winter records 1943). 

Gage. --Water-stage recorder. Altitude of gage is ,",230 ft (from topographic map). 

Average discharge.--12 years (1938-42, 1943-51), 67.4 cfs.

Extremes.--Maximum discharge during year, 954 cfs May 30 (gage height, 6.66 ft), from 

rating surve extended above 870 cfs; minimum daily not determined.

1938-51: Maximum discharge, that of May 30, 1951; maximum gage height, 6.75 ft 

June 19, 1946; no flow Aug. 19-82, 1940.

Remarks.--Records fair except those for period of ice effect or no gage-height record, 

 wHTch are poor. Water rights totaling 258.6 cfs (priorities 1899 to 1941), for irrigation of about 18,310 acres, adjudicated by Wyoming for diversion above station.

Revisions (water years).--W 1119: 1941, 1943, 1946.

Rating tables, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Apr. 29 to May 12, July 14-25)

Oct. i to Mar. 31 Apr. 1 to Sept. 30

5.0

5.1

5.2 

5.4

20 5.0 

5.2 

5.4 

6.0 

6.7

38

68

125

460

990

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

59

46

41

40

40

36

41

41

41

*41

40

38

36

35

35

36

36

33

32

32

32

30

30

29

35

36

38

48

64

64

55

1,240

40.0

2,460

Nov.

46

53

46

48

53

50

53

b47

*44

36

35

38

43

45

41

41

45

45

45

42

47

47

47

46

44

41

38

37

38

38

-

1,319

44.0

2,620

Dec.

(*)

30

930

30

1,840

Jan.

20

(*)

620

20

1,230

Feb.

(*)

22

j

_

-

616

22

1,220

Mar.

<*)

35

1,085

35

2,150

Apr.

72

70

88

120

140

160

200

240

300

350

310

260

300

420

520

420

500

*560

660

*590

470

410

450

560

560

450

400

480

466

406

-

10,932

364

21,680

May

269

208

186

198

280

358

370

322

316

*346

394

460

454

364

274

286

334

394

460

473

506

*584

\ 518

564

*625

668

720

824

918

918

*866

14,457

466

28,680

June

858

883

783

682

564

506

448

406

376

564

364

400

412

412

454

558

660

720

712

690

698

690

759

653

570

*525

499

486

492

492

-

17,116

571

33,950

July

486

486

454

454

454

448

430

400

382

376

499

538

394

316

274

252

225

*208

186

274

352

298

236

214

186

198

214

225

203

176

148

9,986

322

19,810

Aug.

148

170

198

247

208

152

130

118

122

108

99

87

80

75

70

68

65

60

60

68

82

*85

87

92

82

70

63

63

70

82

90

3,199

103

6,350

Sept.

87

78

68

63

60

58

61

54

50

47

47

50

51

48

47

47

*46

44

46

42

41

43

46

46

44

39

41

43

44

47

-

1,528

50.9

3,030

Calendar year 1950 : Max 621 Min 12 Mean 132 Ac-ft 95,510

Water year 1950-51 : Max 918 Min - Mean 173 Ac-ft 125,000

Peak discharge (base, 250 cfs). Apr. 10 (time and discharge unknown); Apr. 15 (time and discharge 

unknown); Apr. 19 (time and discharge unknown); Apr. 25 (time and discharge unknown); Hay 12 (5 p.m.) 

525 cfs (6.00 ft); Hay 30 (l a.m.) 954 cfs (6.66 ft); June 23 (3 a.m.) 767 cfs (6.44 ft); July 12 

(3 a.m.) 604 cfs (6.28 ft); July 21 (7 p.m.) 388 cfs (5.98 ft); Aug. 4 (4 a.m.) 280 cfs (5.74 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 9 to Apr. 28 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of 7 discharge measurements, weather records, and records for nearby stations.
164 GREEN RIVER BASIN

New Fork River below New Fork Lake, near Cora, Wyo.

Location.--Lat 43°05' , long. 110°01', in sec. 20, T. 36 N., R. 110 W., on left bank 2 miles 

downstream from New Fork Lake and 9 miles north of Cora.

Drainage area.--36.2 sq mi.

Records available.--October 1938 to September 1951 (no winter records 1941, 1943).

Gage.--Water-stage recorder. Altitade of gage is 7,620 ft (from topographic map). Prior 

to Sept. 16, 1949, at site 70 ft downstream at same datum.

Average discharge. 13 years, 49.3 cfs.

Extremes.--Maximum discharge during year, 401 cfs June 10 (gage height, 5.25 ft); minimum 

 daily, 0.2 cfs Oct. 2, 3.

1938-51: Maximum discharge, 466 cfs June 18, 1948; maximum gage height, 5.39 ft

May 24, 1941; minimum daily discharge, 0.1 cfs May 13, 1941, Sept. 20-22, 1950, when

gates in dam at New Fork Lake were closed.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wTTTcTi are fair. Flow regulated for irrigation by New Fork Lake (capacity, 45,900 acreft). No diversion above station.

Rating tabaes, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Nov. 8 Nov. 9 to Sept. 30

2.5 0.0

2.6 1.0

2.7 3.0

2.9 9.0

3.2 22

3.4 36

4.0 113

2.5 1.1

2.6 3.2

2.9 12.5

3.2 28

3.5 55

4.0 128

5.0 340

5.3 414

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.2

7?

12

103

138" 105

105

103

103

103

102

102

102

100

*100

99

98

98

98

98

98

98

98

98

81

32

32

32

32

32

2,369.7

76.4

4,700

Nov.

32

32

32

32

32

32

33

TT

16

16

16

16

*16

16

16

16

16

16

16

16

16

16

16

16

16

14

9.4

?7¥

9.4

9.4

-

575.6

19.2

1,140

Dec.

8.4

260.4

8.4

516

Jan.

6.2

192.2

6.2

381

Feb.

5.0

(*)

_

-

-

140.0

5.0

278

Mar.

6.5

201.5

6.5

400

Apr.

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.1

KT

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.7

8.7

9.0

57JT

8.7

8.7

8.7

9.0

8.7

*8.7

8.7

8.7

9.0

8.7

-

257.1

8.57

510

May

8.1

8.1

7.8

7.8

7.8

7.8

7.8

7.5

7.2

6.9

*6.9

6.9

6.9

6.6

6.5

6.6

6.6

6.3

6.3

6.9

7.2

6.9

58

118

168

206

204

237

'238" 263

241

1,900.2

61.3

3,770

June

239

233

233

239

237

228

226 ??8~

244

270

388

35T

371

369

366

364

366

347

*330

328

328

326

326

323

321

321

318

318

318

316

-

9,222

307

18,290

July

314

3oT

309

309

311

311

311

311

311

309

309

309

306

304

304

*302

304

299

297

268

188

188

188

188

188

188

188

89

4.0

3.0

2.8

7,521.8

243

14,920

Aug.

2.6

2.6

370" 2.4

15

80

7S

47

46

47

47

46

47

46

46

46

46

46

46

47

47

*48

48

47

47

46

46

46

46

47

52

1,303.6

42.1

2,590

Sept.

47

47

48

48

47

48

47

48

48

48

48

48

48

48

48

48

48

*48

47

i§

46

46

96

TIB- 146

122

93

92

92

92

-

1,924

64.1

3,820

Calendar year 1950: Max 350 Mln 0.1 Mean 57.4 Ac-ft 41,520

Water year 1950-51: Max 388 Mln 0.2 Mean 70.9 Ac-ft 51,320

Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov. 27 to Apr. 3 (no gage-height record Jan. 1 to 

Mar. 2; discharge estimated on basis of 1 discharge measurement, weather 'records, and gate openings 

at New Pork Lake) Apr. 5, 9-11, 14, 15.
GREEN RIVER BASIN

Pine Creek at Pinedale, Wyo.

Location.--Lat 42°52', long. 109°52', at north edge of sec. 4, T. 33 N., R. 109 W., on 

left bank 30 ft downstream from bridge on 0. S. Highway 187 at Pinedale, 3 miles upstream from mouth.

Drainage area.--118 sq mi.

Records available.--April to October 1904, May 1915 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,162.34 ft above mean sea level, datum of 

T929. April to October 1904, staff gage at different datum. May 8, 1915, 'to Aug. 16, 

1917, staff gage a quarter of a mile downstream, Aug. 17, 1917, to May 3, 1926, staff 

gage at highway bridge, and May 4, 1926, to Nov. 11, 1948, water-stage recorder at 

sites just upstream from highway bridge at datum 3.06 ft higher.

Average discharge.--36 years, 134 cfs.

Extremes.--Maximum discharge during year, 923 cfs July 8 (gage height, 5.28 ft); minimum 

daily, 24 cfs Apr. 24.

1904, 1915-51': Maximum discharge, 2,310 cfs June 17, 1918 (gage height, 5.0 ft, 

site and datum then in use); minimum daily, 2 cfs Apr. 1-26, May 6-8, 1931.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Water rights totaling 86.18 cfs (priorities 1898 to 1937) for irrigation of about 6,040 acres, adjudicated by Wyoming for diversion above station. Most of 

the irrigated area lies below the station. Water rights for 1.92 cfs (priorities 1935, 

1941) for town of Pinedale municipal supply, adjudicated for diversion above station. 

Flow regulated by Fremont Lake (regulated capacity, 20,600 acre-ft, of which 9,840 

acre-ft is for power purposes arid 10,760 acre-ft is for irrigation).

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

2.8

2.9 

3.1 

3.5

3.8 

4.2 

4.6 

5.3

148

256

430

940

Discharge, In cubic feet per second, water year October 1950 to September 1951

Bay

1

2

3

4

5

6

7

8

9

10

11

12

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

42

43

44

44

43

44

44

*43

43

43

42

42

41

40

39

39

38

38

37

35

34

33

33

33

32

31

31

30

29.

1,198

38.6

2,380

Nov.

39

69

67

66

65

63

66

*70

70

62

64

66

66

66

66

66

66

65

63

65

65

65

63

65

65

65

65

66

b66

66

-

1,941

64.7

3,850

Dec.

62

60

60

56

54

56

58

60

60

58

*57

57

56

b55

54

53

52

51

51

51

49

b48

48

48

b50

b50

b49

b47

b45

43

b43

1,641

52.9

3,250

Jan.

b45

47

50

50

50

49

49

49

50

50

50

50

50

51

*b50

b46

*b47

b47

b48

b47

47

47

47

48

48

47

47

47

47

47

47

1,494

48.2

2,960

Feb.

45

44

45

45

47

48

48

49

49

48

48

*48

b48

48

48

47

47

47

47

47

46

46

46

46

45

45

45

45

_

_

-

1,307

46.7

2,590

Mar.

43

43

43

43

43

b42

b42

b42

b42

b42

b41

b41

40

*40

b40

b40

b40

b39

*b39

b39

38

38

b38

b38

b38

38

38

b38

b38

39

38

1,243

40.1

2,470

Apr.

38

39

38

38

38

38

39

39

39

41

51

51

52

BT

49

*48

46

45

48

49

50

46

38

24

2T

28

30

31

32

31

-

1,215

40.5

3,410

May

31

31

31

30

28

27

27

28

30

36

*74

73

54

58

57

48

50

53

60

67

80

91

107

128

165

182

238

618

678

*708

708

4,596

148

9,120

June

700

670

618

562

478

430

380

348

314

283

259

256

259

276

314

386

548

*700

760

880

*889

855

823

775

730

670

655

685

700

700

-

16,903

563

33,530

July

692

678

648

662

738

699

847

898

898

872

839

775

700

648

611

597

604

611

611

648

738

775

730

678

618

583

555

555

562

597

662

21,429

691

42,500

Aug.

648

618

569

536

555

569

562

548

522

472

430

397

366

344

318

276

188

132

134

*134

134

138

142

146

144

144

144

142

140

142

140

9,874

319

19,580

Sept.

140

140

140

140

140

138

136

134

130

126

121

117

119

114

112

110

*102

104

93

83

83

76

52

40

40

40

42

42

39

30

-

2,923

97.4

5,800

Calendar year 1950: Max 1,270 Mln 20 Mean 161 Ac-ft 116,400

Water year 1950-51: Max 898 Mln 24 Mean 180 Ac-ft 130,400

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Mo gage-height record Nov. 10-12, Nov. 30 to Dec. 10, Jan. 2-14, Jan. 21 to Feb. 11, Feb. 

14 to Mar. 5 (stage-discharge relation affected by Ice during most of periods), May 4, 5; discharge 

estimated on basis of weather records.

256684 O - 53 - 12
166 GREEN RIVER BASIN

Pole Creek below Little Half Moon Lake, near Pinedale, "fyo.

Location. Lat 42°53', long. 109°43', in sec. 26, T. 34 N., R. 108 W., on left bank lj 

miles downstream from Little Half Moon Lake and 7 miles east of Pinedale.

Drainage area .--87.5 sq mi.

Records available. October 1938 to September 1951 (no winter records 1943-45).

Gage.--Water-stage recorder. Altitude of gage is not determined. Prior to Oct. 27, 1948, 

at site a quarter of a mile upstream at different datum.

Average discharge.--9 years (1939-40, 1940-42, 1945-51), 110 cfs.

Extremes. Maximum discharge during year, 1,140 cfs June 18 (gage height, 6.39 ft); minimum 

daily, 17 cfs Mar. 30.

1938-51: Maximum discharge, that of June 18, 1951; maximum gage height, 6.73 ft 

(site and datum then in use) June 23, 1943; minimum discharge observed, 2.9 cfs Nov. 10, 

1944 (discharge measurement), but may have been less during period of no record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Natural regulation by several lakes above station. Water rights 

totaling 7.03 cfs (priorities 1927, 1928) for irrigation of about 490 acres adjudicated 

by Wyoming for diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Dec. 4

3.2 38

3.5 75

Dec. 5 to Sept. 30

2.8 16

3.0 30

3.5 85

4.0 175

4.5 305

5.0 475

6.0 940

6.5 1,210

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

42

44

45

46

4T

44

41

4T

42

*44

44

44

44

44

44

44

44

44

44

44

44

45

44

42

44

42

42

42

42

41

41

1,345

43.4

2,670

Nov.

41

42

42

40JO40

*44

53

52

50

50

50

50

52

52

52

54

57

58

59

63

63

66

68SB68

68

68

67

66

-

1,643

54.8

3,260

Dec.

65

63

62

63

61

59

60

60

59

57

56

54

*53

52

51

50

48

45

44

43

42

40

39

38

37

36

b36

b30

b3tf

31

32

1,496

48.3

2,970

Jan.

b30

b30

31

30

b30

b30

30

30

30

30

28

tt

b28

b28

b28

*28

28

28

28

29

30

33

35

3T

34

34

32

31

31

30

30

936

30.2

1,860

Feb.

35

46

56

5T

52

45

40

39

39

38

37

37

*b35

33

32

29

31

31

31

30

28

27

27

27

27

27

25

24_

_

-

982

35.1

1,950

Mar.

25

25

24

25

25

24

23

23

23

24

23

23

22

23

22

21

20

20

20

21

19

18

b!9

b!9

b!9

18

18

b20

b20

17

TF

661

21.3

1,310

Apr.

blS

bTF

18

18

18

19

20

21

21

23

24

25

27

29

30

33

*37

41

46

51

58

62

66

75

80

81

86

88

81

95_

1,319

44.0

2,620

May

92

89

86

85

§i

86

95

*105

117

129

147

169

205

220

222

222

220

228

255

299

356

388

440

*515

665

745

755

890

1,050

*1,050

975

10,984

354

21,790

June

890

805

665

535

444

377

329

296

275

272

287

332

394

483

595

780

990

*1,130

1,100

1,040

980

885

800

680

595

551

543

555

583

595

18,786

626

37,260

July

571

535

507

515

563

622

STB" 640

587

543

503

458

419

377

356

*356

366

380

391

402

405

426

419

374

329

299

281

SET

296

281

287

13,387

432

26,550

Aug.

281

270

262

260

268

293

308

2155"

270

245

218

192

171

153

141

129

117

110

104

*101

96

9335~

95

95

96

96

95

95

95

93

5,236

169

10,390

Sept.

91

m

84

81

80

77

74

72

68

65

61

58

54

52

49

48

46

45

44

*43

41

39

37

35

33

31

28

28

28

27

1,605

53.5

3,180

Calendar year 1950 : Max 904 Min 17 Mean 139 Ac-ft 100,900

Water year 1950-51 : Max 1,130 Min 17 Mean 160 Ac-ft 115,800

 Discharge measurement made on this day. 

b Stage-discharge Stage -discharge relation relation affected affected by ice.

Note. No gage-height record Jan. 7-11, Jan. 20 to Feb. 1, Feb. 14 to Mar. 20 ( 

elation affected by ice during part of periods); discharge estimated on basis of 

nd records for nearby stations.

stage-discharge 

weather records
GREEN RIVER BASIN 

Fall Creek near Pinedale, Wyo.

167

Location.--Lat 42*51', long. 109°43', in sec. 2, T. 33 N., R. 108 W., on right bank at 

McBrTde Ranch, half a mile downstream from Meadow Creek, 3 miles downstream from Burnt 

Lake, and 8 miles east of Pinedale.

Drainage area.--37.2 sq mi.

Records available.--October 1938 to September 1951 (no winter records 1943, 1944).

Gage.--Water-stage recorder. Altitude of gage not determined.

Average discharge. 10 years (1939-42, 1944-51), 38.4 cfs.

Extremes.--Maximum discharge during year, 546 cfs June 17 (gage height, 7.76 ft); minimum 

daily, 4.8 cfs Sept. 28, 30.

1938-51; Maximum discharge, 546 cfs June 22, 1943 (gage height, 7.83 ft), June 17, 

1951 (gage height, 7.76 ft); minimum daily, 0.1 cfs Sept. 21, 1942:

Remarks.--Records fair. Practically no diversion above station.

Rating tables, water year 195O-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to May 21 May 22 to Sept. 30

5.0 6.5

5.1 9.0

5.3 18

5.5 32

6.0 81

6.5 153

7.0 243

4.9

5.0

5.1

5.2

5.3

4.6 

6.2 

9.0

13

18 7.7

172

292

524

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

£3

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

9.8 ll 

11

11

11

11

11

11

11

*11

11

12

12

12

12

12

12

IS- 13

is

12

12

12

11

11

11

11

11

11

11

11

354.8

11.4

704

Nov.

11

T2

11

11

11

11

*12

18

22

a21

a21

a20

a20

al9

al9

a!9

a!9

a20

20

21

23 2S

23

22

21

20

19

19

18

19

-

545

18.2

1,080

Dec.

16

16

17

20

IS

al5

al5

al4

al4

a!4

al5

a!4

*14

14

13

13

13

12

12

11

11

11

11

11

11

11

1TT- 9.8

1111

12

409.8

13.2

813

Jan.

11

11

13

14

13

12

12

12

12

12

12

11

11

11

11

*11

11

12

12

12

12

14

15

T*

14

14

14

13

all

all

alO

378

12.2

750

Feb.

alO

aT2

al4

16

16

15

15

16

TB- 17

15

15

*14

14

13

12

11

12

12

12

11

11

11

11

11

11

10

10

_

-

363

13.0

720

Mar.

11

Iff

10

11

11

9.8

10

10

11

11

10

10

9.8

9.8

9.8

10

9.4

9.0

9T<5

9.0

9.4

9.4

9.8

9.8

9.8

9.8

9.0

a9.0

a9.4

a9.4

a9.4

304.8

9.83

605

Apr.

a8.4

aETT

8.5

8.5

8.8

8.8

9.4

9.8

11

10

11

11

14

13

14

16 *ie

19

23

26

30

30

30

35

38

37

36

36

36

40

-

604.6

20.2

1,200

May

39

36

33

31

3T

41

52

*60

64

69

74

92

106

98

92

88

87

99

129

153

172

178

248

*298

322

344

396

454

499 *m

403

5,238

169

10,390

June

370

328

275

236

192

164

145

134

130

m

146

165

199

259

325

440

524

BoT

457

413

364

328

289

246

226

228

228

246

261

248

-

8,202

273

16,270

July

224

207

207

236

270

270

251

236

212

188

178

165

150

140

138

*135

134

135

134

132

137

132

117

106

98

92

8939-

90

90

89

4,871

157

9,660

Aug.

84

78

74

85

107

118 1C9"

96

85

76

70

59

52

44

37

35

31

29

27

*24

23

22

23

22

22

19

19

18

16

IS

16

1,536

49.5

3,050

Sept.

16

T*

14

14

14

12

12

11

11

11

9.8

9.8

a9.S

a9.2

a8.8

a8.4

a8.0

a7.8

a7.5

*7.3

7.0

6.5

6.2

5.6

5.4

5.2

5.1

4.8

tt

4.8

-

270.7

9.02

537

Calendar year 195O: Max 420 Mln 5.9 Mean 51.7 Ac-ft 37,440

Water year 1950-51: Max 524 Mln 4.8 Mean 63.2 Ac-ft 45,78O

fty: Peak discharge (base, 200 efs).--May 29 (2 p.m.) 535 cfs (7.73 ft); June 17 (7 a.m.) 546 cfs (7.76

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage 

and records for nearby stations.
168 GREEN RIVER BASIN

New Fork River near Boulder, Wyo.

Location. Lat 42°45', long. 109°44', in sec. 9, T. 32 N., R. 108 W., on left bank 70 ft 

downstream from county highway bridge, an eighth of a mile upstream from Boulder Creek, 

and half a mile southwest of Boulder.

Drainage area.--552 sq mi.

Records available. May 1915 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,000 ft (by barometer). Prior to 

Sept. 7, 1936, staff gage at bridge 70 ft upstream at same datum.

Average discharge.--36 years, 403 cfs.

Extremes. --Maximum discharge during year, 3,100 cfs June 20 (gage height, 6.27 ft); miniirom 

daily, 115 cfs Mar. 1-3.

1915-51: Maximum discharge observed, 12,300 cfs June 17, 1918 (gage height, 8.7 ft), 

from rating curve extended above 6,000 cfs; minimum daily, 42 cfs Dec. 15-17, 1915.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Plow partly regulated by Fremont, New Fork and Willow Lakes (combined 

capacity, 81,500 acre-ft) and Little Half Moon Lake. Diversions above station for 

irrigation of hay meadows above and below station.

Revisions.--W 879: Drainage area.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

2.6 

3.0 

4.0

185

370

1,000

5.0 

6.0 

6.3

1,730

2,760

3,140

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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 

213

217

*217

213

205

2755-

205

209

213

217

225

230

230

234

*234

230

225

225

225

225

230

230

221

217

225

252

261 518"

238

234

6,962

225

13,810

Nov.

234 

266

280

280

275

275

275

*310 2BE225

250

255

260

256

256

252

261

261

275

270

295

280

295

270

270

270

261

261

252

266

-

8,021

267

15,910

Dee.

243

230

248

261

23T

210

220

240

240

225

230

235

 230

210

220

220

220

220

210

200

190

180

190

190

190

170

160

155

150

140

T4T5"

6,401

206

12,700

Jan.

135 

130

135

140

135

140

135

130

130

130

140

142

145

150

160

*160

150

162 155"

150

140

145

148

150

150

150

145

140

130

130

128

4,410

142

8,750

Feb.

130 

130

135

140

140

140

142

148

150 ISO145

140

130

*130

138

140

145

140

135

135

138

132

132

130

125

120

120

118

_

_

-

3,798

136

7,530

Mar.

115 ITSUS

118

118

120

120

130

130

120

118

125

128

135

*135

130

128

130

140

160

175

170

180

190

190

188

190

190

198

190

190

4,581

148

9,090

Apr.

215 

23TJ

230

230

238

252

285

320

370

360

320

310

365

466

472

376

 376

382

400

382

365

350

325

340

365

454

448

400

394

478

10,498

350

20,820

May

436 

365

335

315

m

484

460

 550

562

520

538

568

622

622

622

592

580

568

568

646

778

839

895

1,000

1,140

1,210

1,340

*1,800

2,260

2,530

2,490

26,659

860

52,880

June

2,420 

2,420

2,360

2,110

1,730

1,480

 1,260

1,080

965

902

874

55F

1,140

1,290

1,460

1,710

2,140

*2,690

2,940

5,080

3,030

2,910

2,660

2,360

2,150

2,000

1,870

1,850

1,890

1,920

57,699

1,923

114,400

July

1,910 

1,860

1,790

1,760

1,860

2,000

2,100

2,100

2,170

2,100

2,070

2,010

1,820

1,630

1,510

1,480

*1,480

1,520

1,540

1,600

,850

,910

,750

,560

,430

,360

,550

1,390

1,430

1,370

1,360

53,050

1,711

105,200

Aug.

1,320 

1,300

1,240

1,190

1,250

1,260

1,260

1,240

1,190

1,100

1,010

957

867

804

754

712

604

490

466

466

 472

466

502

502

472

454

442

456

424

23TT

460

24,500

790

48,600

Sept.

460 

47F

436

418

406

594

594

582

350

520

510

505

295

290

275

270

261

252

252

*iil

275

510 5E~0

370

360

355

3fO

5f5

3fO

335

-

10,135

338

20,100

Calendar year 1950: Max 3,130 Min 110 Mean 585 Ae-ft 423,600

Water year 1950-51: Max 3,080 Min 115 Mean 594 Ae-ft 429,800

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 10-13, Dec. 6 to Jan. 12, Jan. 16-19, Feb. 12- 

27, Mar. 16 to Apr. 4. No gage-height record Jan. 13-15, Jan. 20 to Feb. 11, Feb. 28 to Mar. 15 

(stage-discharge relation affected by Ice); discharge estimated on basis of 1 discharge measurement, 

weather records and records for nearby stations.
GREEN RIVER BASIN 169

Boulder Creek "below Boulder Lake, near Boulder, Wyo.

Location. Lat 42°50', long. 109°43', in sec. 14, T. 33 N., R. 108 W., on right bank 1 mile 

downstream from outlet of Boulder Lake and 5 miles north of Boulder.

Drainage area. 130 sq mi.

Records available. October 1938 to September 1951 (no winter records 1943, 1945).

Gage. Water-stage recorder. Altitude of gage not determined.

Average discharge.--10 years (1939-42, 1943-44, 1945-51), 196 cfs.

Extremes.--Maximum discharge during year, 2,450 cfs June 18 (gage height, 5.91 ft); minimum daily, 37 cfs Oct. 30.

1938-51: Maximum discharge, that of June 18, 1951; maximum gage height, 5.96 ft 

June 22, 1943; no flow Nov. 28, 1939, to Apr. 15, 1940, Nov. 18, 1944.

Remarks. Records excellent above 100 cfs and good below except those for periods of ice 

effect or no gage-height record, which are fair. Plow slightly regulated by Boulder 

Lake (capacity, 11,000 acre-ft). No diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

Oct. 1 to May 5

1.6 29

1.8 50

2.1 95

2.3 138

May 6 to Sept. 30

1.7 68

1.9 92

2.2 144

2.5 220

3.0 395

4.0

5.0 1,620

6.0 2,540

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

99

55

97

95

93

92

92

92

92

90

90

90

92

92

92

92

92

*92

92

90

86

85

83

81

83

81

80

78

64

37

35

2,651

85.5

5,260

Nov.

394TJ39

39

40

42

42

43

*50

48

46

46

46

46

46

46

48

48

48

46

46

46

48

48

49

49

50

50

51

53

1,378

45.9

2,730

Dec.

53

53

53

53

53

54

55

55

55

55

*55

55" 56

56

55

55

55

55

55

55

55

54

54

54

54

54

54

54

53

53

53

1,683

54.3

3,340

Jan.

54

54

58

58

58

58

58

58

58

58

58

60

60

62

ST

60

*59

59

62

60

60

58

58

56

56

56

56

52

BT

52

52

1,782

57.5

3,530

Feb.

56

BT

767B74

70

70

68

68

68

68

68

*68

68

64

62

62

62

60

60

60

60

60

60

60

60

60

60

_

-

-

1,814

64.8

3,600

Mar.

60

60

60

60

60

62

BIT

60

59

58

58

58

58

56

56

56

54

53

53

53

53

53

52

52

50

50

50

48

48

48

46

1,704

55.0

3,380

Apr.

46

45

44

44

43

42

42

42

40

39_

39

39

39

39

39

39

*39

39

40

40

40

40

40

43

44

44

45

46

48IB"

-

1,257

41.9

2,490

May

49

4T

55

68

125

178

178

178

*178

178

193

208

214

217

220

224

227

234

244

258

272

283

308

360

546

848

1,180

1,690

*2,080

1,970

1,820

14,832

478

29,420

June

1,720

1,520

1,230

976

800

681

*609

560

532

54T

564

618

695

878

1,170

1,610

2,060

2,390

*2,200

2,000

,770

,570

,390

,210

,120

,120

,100

,120

,140

,110

-

36,005

1,200

71,410

July

1,030

955

927

962

1,050

1,090

1,060

1,000

934

848

776

705

636

591

573

564

*560

564

564

564

578

586

555

510

478

458

442

434

423

527

423

21,263

686

42,170

Aug.

416

406

395

402

426

454 ISO"

434

412

392

374

353

332

314

300

290

283

280

272

272

*269

266

262

255

248

241

230

224

214

211

205

9,882

319

19,600

Sept.

199 m

193

190

188

185

182

178

172

165

159

152

148

140

134

126

119

116

110

*106

101

96

92

88

84

82

79

77

75

74

-

4,006

134

7,950

Calendar year 1950: Max 2,030 Min 20 Mean 252 Ac-ft 182, 30o

Water year 1950-51: Max 2,390 Min 37 Mean 269 Ac-ft 194,900

Discharge measurement made on this day.

9, Dec. 7, Jan. 1, 2, 5-14, 20, 21, 23, 26,
170 GREEN RIVER BASIN

East Fork near Big Sandy, Wyo.

Location. Lat 42°40', long. 109°25', in sec. 7, T. 31 N., R. 105 W., on left bank 1 mile 

downstream from Jim Creek and 4 miles northeast of Big Sandy.

Drainage area.--79.2 sq mi.

Records available.--October 1938 to September 1951 (no winter records 1942-45).

Gage.--Water-stage recorder. Altitude of gage not determined.

Average discharge.--8 years (1939-41. 1945-51), 103 cfs.

Extremes.--Maximum discharge during year, 1,470 cfs May 28 (gage height, 6.68 ft); minimum 

not determined.

1938-51: Maximum discharge, 1,600 cfs June 17, 1950 (gage height, 6.88 ft), from 

rating curve extended above 1,200 cfs on basis of slope-area determination of peak 

flow; minimum discharge observed, 1.2 cfs Jan. 4, 1940 (discharge measurement), but may 

have been less during period of ice effect.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion above station.

Rating table, water year 1950-51, except periods of loe effect 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 2-9)

2.8 

3.0 

3.2 

3.5 

4.0 170

4.5 310

5.0 490

6.C 1,010

6.6 1,410

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

48

43

45

43

43

43

43

48

5250"

50

50

52

50

50

48

*45 

43

39

38

36

33

32

31

32

32

32

28

3T

37

35

1,284

41.4

2,550

Nov.

30

36

32

37

37

32

32

29

24

21

26

29

30

*32

30

29

30 

31

30

27

30

29

25

25

24

24

24

23

22

21

-

846

28.2

1,680

Dec.

(*)

20

620

20

1,230

Jan.

18

558

18

1,110

Feb.

16

-

_

-

448

16

889

Mar.

17

527

17

1,050

Apr.

18 *TS

18

18

20

20

22

25

26

24

22

23

25

28

31

32

35 

43

53

53

52

47

47

47

45

50

53

56

6553"

1,079

36.0

2,140

May

56

52

4956-

79

112

128

123

*130

166

205

250

247

218

208

232

265 

340

462

514

557

620

*776

9Z6

1,030

1,020

1,160

1,410

*l,18o

872

938

14,381

464

28,520

June

830

539

410

347

319

298

286

280

2155"

364

392

462

502

705

878

1,060

1,120 520"

818

*730

598

530

442

434

474

446

438

478

458

389

16,242

541

32,220

July

368

354

403

430

458

386

354

325

280

253

238

200

192

198

202

192

*210 

232

200

208

295

215

170

152

141

137

134 T52"

156

168

148

7,531

243

14,940

Aug.

136

127

146

188

225

175

143

119

105

91

79

71

66

62

55

50

47 

45

43

44

*62

59

59

60

52

42

35

32

30

3T

43

2,520

81.3

5,000

Sept.

60

63

55

52

93_

86

93

82

68

59

48

39

33

31

27

27

25 

24

25

24

*22

22

20

20

18

If

15

1*

IT

if

1,191

39.7

2,360

Calendar year 1950: Max 1,350 Mln - Mean 151 Ac-ft 109,300

Water year 1950-51: Max 1,410 Mln - Mean 129 Ac-ft 93,690

Peak discharge (base, 700 efs).--May 28 (4 a.m.) 1,470 cfs (6.68 ft); June 17 (5 a.m.) 1,350 cfs 

(6.51 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 8 to Dec. 31, Apr. 1O-13. No gage-height 

record Jan. 1 to Apr. 1 (stage-discharge relation affected by Ice during most of period); discharge 

estimated on basis of weather records and records for nearby stations.
GREEN RIVER BASIN 171 

Silver Creek near Big Sandy, Wyo.

Location.--Lat 42°45', long. 109°31', in sec. 17, T. 32 N., R. 106 W., on right bank at

 Miller Ranch, 1 mile downstream from South Fork, 8 miles northwest of Big Sandy, and

11 miles east of Boulder. 

Drainage area.--45.4 sq mi.

Keeoras available.--October 1938 to September 1951 (no winter records 1942-45). 

uage.--water-stage recorder. Altitude of gage is 7,500 ft (from topographic map), 

"ffverage discharge.--8 years (1939-41, 1945-51), 43.4 cfs. 

Extremes.--Maximum discharge during year, 1,030 efs May 28 (gage height, 7.53 ft); minimum

 daily, 1.7 cfs Sept. 26-28.

1938-51: Maximum discharge, that of May 21, 1951; no flow at times in most years. 

Note.--The maximum discharge for the water year 1950, not previously published, has 

been~cTetermined as 1,000 cfs June 16, 1950 (gage height, 7.47 ft). 

Remarks.--Records fair except those for ceriod of no gage-height record, which are poor.

 JTwater right for 1.71 cfs (priority 1900), for irrigation of about 120 acres near the

station, adjudicated for diversion above station. 

Revisions. visions.--nevisea --Revised figures ngof 01 discharge aisenarge for lhigh-water nign-waT;er periods periuus in the tri wauer year ±3ou, 

superseding those published in W>ter-Supply paper 1179, and supplemental peak discharges 

for the water year 1950, not previously published, are given herewith:

Day

May 29 ..... 

June 6 ..... 

7 ..... 

13.....

Discharge 

(cfs)

334 

754 

732 

677

Month

June ..........................

Water year 1949-50. .........

Day

June 14. .... 

15.. ... 

16..... 

17.... .

Cfs-days

3,841 

16,680 

24,727.9

Discharge 

(cfs)

757 

785 

840 

785

Maximum

547 

840 

840

Day

June 18..... 

19 ..... 

21..... 

22. ....

Minimum

13 

323 

.4

Discharge 

(cfs)

647 

644 

644 

650

Mean

124 

556 

67.7

Runoff in 

acre-ft

7,620 

S3, 080 

49,040

Peak discharge (base, 380 cfs) . 1950: June 6 (9 p.m.) 924 cfs (7.26 ft); June 16 (7:30 

.m.J 1,000 cfs ^7.47 ft).

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 15 to Nov. 7, 

Hay 6-15, Sept. 8-30)

2.7

2.8

2.9 

3.1

1.0 

2.0 

3.5 

9.0

3.2

3.5 

4.0 

4.5

13

34

88

160

5.0 

6.0 

7.6

262

498

1,060

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

5.0

5.0

5.2

4.8

4.8

4.8

4.5

TT5

5.0

5.0

5.0

5.0

5.0

5.2

5.5

5.5

*5.2

7.8

8.4

8.1

9.0

9.0

9.0

9.0

9.8

10

11

11

11

11

12

221.4

7.14

439

Nov.

9.8

12

13~6.3

T3

12

13

11

9.5

8.5

9.5

9.5

10

11

10

 10

10

10

10

10

10

10

9.5

9.5

9.0

8.5

8.5

8.5

8.0

8.0

-

297.6

9.92

590

Dec.

7.0

217.0

7.0

430

Jan.

6.5

201.5

6.5

400

Feb.

6.0

_

_

-

168.0

6.0

333

Mar.

6.5

201.5

6.5

400

Apr.

*7.0 770-

7.0

7.4

7.8

7.8

8.5

9.0

9.5

8.5

8.5

9.5

9.5

10

11

12

14

17

20

20

18

18

18

18

17

18

19

21

24

VS

-

405.0

13.5

803

May

21

20

19

30

40

57

64

62

*62

70

93

118

111

110

115

125

147

200

238

260

284

376

*498

*610

664

668

788

964

*S55

668

675

8,985

290

17,820

June

552

390

277

218

190

168

170

170

190

224

232

286

340

410

467

604

610

STE

436

*376

310

262

216

190

194

182

162

156

147

132

-

8,777

293

17,410

July

119

TTO

104

99

95

87

76

67

60

54

49

43

36

30

25

52

*58

49

40

40

48

34

26

21

17

14

12

12

11

8.4

5.2

1,501.6

48.4

2,980

Aug.

3.5

3.4

3.4

8.4

KT

5.8

5.2

4.5

5.5

6.0

5.2

5.2

4.8

4.5

4.2

4.0

4.0

3.8

3.8

4.0

*4.0

4.0

4.2

4.5

4.0

3.2

2.9

 27S 2.6

2.9

3.8

136.5

4.40

271

Sept.

4.5

4.5

4.2

3.5

3.4

4.0

374" 4.8

2.9

2.6

2.4

2.4

2.4

2.4

2.3

2.2

2.0

2.2

2.3

2.2

*2.0

2.0

1.9

1.9

1.9

1.7

TTT

1.7

1.8

1.9

-

79.1

2.64

157

Calendar year 1950: Max 840 Mln - Mean 69.4 Ac-ft 50,250

Water year 1950-51: Max 964 Mln 1.7 Mean 58.1 Ac-ft 42,030

.Peak discharge (base. 380 cfs). May 28 (8 p.m.) 1,030 cfs (7.53 ft); June 16 (11:30 p.m.) 745 cfs 

(6.80 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 8 to May 5 (stage-discharge relation affected by ice during most 

of period); discharge estimated on basis of 1 discharge measurement, weather records, and records for 

nearby stations.
172 GREEN RIVER BASIN

North Piney Creek near Mason, Wyo.

Location. Lat 42°40', long. 110 0 21', sec. 19, T. 31 N., R. 113 W., on left bank 4 miles 

west of Mason.

Drainage area.--58 sq mi, approximately.

Records available.--May 1915 to October 1916, October 1931 to September 1951 (no winter 

records most years). Published as "near Marbleton" 1915-16.

Gage.--Water-stage recorder. Altitude of gage is 7,520 ft (from topographic map). Prior 

 Eb Oct. 12, 1931, at datum 1.05 ft lower.

Average discharge.--10 years (1915-16, 1939-41, 1943-45, 1946-51), 60.3 cfs.

Extremes.--Maximum discharge during year, 606 cfs June 17 (gage height, 4.27 ft); minimum 

not determined, occurred during period of no gage-height record.

1915-16, 1931-51: Maximum discharge, 613 cfs June 19, 1916 (gage height, 3.93 ft), 

from rating curve extended above 450 cfs; maximum gage height, that of June 17, 1951; 

minimum not determined, probably occurred during winter.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

wnTch are poor. Water rights totaling 16.11 cfs (priorities 1886 to 1920) for irrigation 

of about 1,130 acres adjudicated by Wyoming for diversion above station.

Rating table, water year 195O-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.3 

1.8

2.5 

3.0 

4.3

150

250

615

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

I

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.

37

3T

34

33

33

35

35

36

35

33

*33

32

31

30

30

30

29

28

28

28

27

26

Z&

26

28

28

30

30

36

36

33

972

31.4

1,930

Nov.

30

33

30

31

30

*30

31

b35

b32

b29

> 28

-

871

29.0

1,730

Dec.

(*)

24

744

24

1,480

Jan.

22

682

22

1,350

Feb.

26

-

_

-

728

26

1,440

Mar.

25

775

25

1,540

Apr.

24

24

*b24

b25

b26

b28

b28

b30

b33

b33

33

36

47

54

57

68

87

104

~85 109

74

62

64

74

65

63

61

64

78

68

-

1,628

54.3

3,230

!iay

61

56

56

63

83

105

116

102

118

*136

162

191

178

158

157

174

*199

250

268

265

295

270

318

355

396

399

432

507

531

480

444

7,325

236

14,530

June

438

381

322

278

245

*217

205

189

180

185

191

215

255

320

381

498

588

588

564

558

558

*540

500

510

505

490

480

500

480

460

-

11,821

394

23,450

July

460

460

450

430

430

410

390

380

370

360

330

310

310

290

27O

260

250

240

230

220

220

210

195

180

170

165

160

150

145

*139

152

8,716

281

17,290

Aug.

131

137

13Q

130

119

112

104

98

98

90

85

78

75

*74

72

68

65

62

62

63

64

62

66

63

58

54

52

51

57

56

56

2,487

80.2

4,930

Sept.

55

50

48

47

45

45

44

41

41

40

40

42

41

40

39

38

*36

40

39

35

36

37

36

34

33

32

33

33

34

33

-

1,187

39.6

2,350

Calendar year 195O: Max 502 Min 9.0 Mean 86.5 Ac-ft 62,61'0

Water year 1950-51 : Max 588 Min - Mean 104 Ac-ft 75,250

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 11 to Apr, 4 (stage-discharge affected by lee during most of 

period), June 23 to July 29; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for nearby stations.
GREEN RIVER BASIN 173

Middle Piney Creek "below South Fork, near Big Piney, Wyo.

Location. Lat 42°36', long. 110°28', in sec. 7, T. 30 N., R. 114 W., on left bank 1 mile 

downstream from South Fork and 18 miles northwest of Big Piney.

Drainage area.--34.3 sq mi.

Records available.--July 1939 to September 1951 (no winter records 1943, 1946). 

Gage.--Water-stage recorder. Altitude of gage is 7,980 ft (from topographic map). 

Average discharge.--10 years (1939-42, 1943-45, 1946-51), 26.7 cfs.

Extremes.--Maximum discharge during year, 244 cfs May 28 (gage height, 6.41 ft); minimum 

not determined.

1939-51: Maximum discharge, 254 cfs June 29, 1943 (gage height, 6.33 ft), from 

rating curve extended above 190 cfs; maximum gage height, that of May 28, 1951; minimum 

not determined, occurred during period of ice effect.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated "by Middle Piney Lake (usable capacity, 4,200 acre-ft). 

Small diversions for irrigation of hay meadows above station.

Rating table, water year 195O-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

4.6

4.7

5.0

3.4

5.8

9.4

20

5.3 

5.7 

6.5

102

264

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

£0

21

22

£3

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

16

lF

14

14

14

15

15

14

14

14

*13

13

13

13

13

12T2"

12

12

12

12

12

12

13

14

12

13

13

12

12

12

407

13.1

807

Nov.

12T2"

11

11

11

*10

11

]_1

8.0

7.0

7.4

8.3

8.3

8.3

6.1

6.5

8.3

8.7

9.4

9.9

10

9.9

10

10

10

10

9.8

9.6

11

9.6

-

285. 1

9.5

565

Dec.

(*)

7.5

232.5

7.5

461

Jan.

6.2

(*)

192.2

6.2

381

Feb.

(»)

6.4

_

_

-

179.2

6.4

355

Mar.

(*)

6.5

201.5

6.5

40O

Apr.

5.6

5.6

5 .6

5.6

*5.6

5.3 576-

6.2

6.2

7.2

7.6

7.6

9.0

11

15

18

19

24

25

2T

20

19

19

23

a21

a20

al9

a20

a24

a23

424.7

14.2

842

May

a21 *2T

21

24

28

a34

a40

a37

a37

a40

47

51

48

*46

47

54

62

75

83

88

94

92

102

116

131

144

172

218

222

5T3?

190

2,587

83.5

5,130

June

186

162

144

131

120

*111

111

102

100

21

100

109

120

138

164

207

240 2T5"

233

224

216

*207

196

209

205

205

202

213

213

209

5,114

170

10,140

July

205 isi

194

200

202

2OO

196

198

194

188

188

174

170

170

170

164

162

156

152

152

148

138

133

127

120

115

111

107

102

*99

96_

4,925

159

9,770

Aug.

96

99

9T

88

80

75

68

66

62

58

54

51

48

*47

45

44

42

40

40

39

39

37

39

36

33

32

29

29

28

2T

28

1,594

51.4

3,160

Sept.

27

2T

25

24

24

24

24

22

22

21

21

21

21

20

19

19

*19

19

18

17

17

18

17

16

16

15

T^

15

15

IS

592

19.7

1,170

Calendar year 1950: Max 229 Min 4.0 Mean 43.0 Ac-ft 31,150

Water year 1950-5rTTlax 24O Min - Mean 45.8 Ac-ft 33,180

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, 

and records for nearby stations.
GREEN RIVER BASIN

La Barge Creek near La Barge Meadows ranger station, Wyo.

Location.--Lat -J ^ . - -iJLLU 42°30', -10 r^w , long. -L^Jil^,. HOMO ±±v 1'_' 1 , , ±11 in OCl_. sec. U 8, , T. 1. Cj*J 29 N. M t , Jv R. J--L 116 1-" W. W » , , U±>- on -LC-l left l> bank UCUiiV half a

e~(revised) upstream from Crystal Creek, 2 miles southeast of La Barge Meadow

ranger station and 29 miles northwest of La Barge.

Records available.--October 1940 to September 1942 (no winter records), October 1950 tc

Gage.--Water-stage recorder. Altitude of gage is 8,410 ft (from topographic map). Oct. 1,

to Sept. 30, 1942, at site 300 ft upstream'at different datum.

Extremes.--Maximum discharge daring year, 188 cfs May 26 (gage height, 5.17 ft), from 

rating curve extended above 120 cfs; minimum daily not determined.

1940-42, 1950-51: Maximum discharge, that of May 26, 1951; maximum gage height, 

6.84 ft (site and datum then in use) May 26, 1942; minimum daily discharge not determined.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

3.6

5.4 

8.2

3.2 

4.0

5.0

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

 570 8.0

6.8

6.7

7.0

7.2

7.2

6.9

6.9

6.7

6 2

6.2

6.2

6.2

6.0

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.9

6.2

*6.5

5.6

5.8

6.0

6.0

5.8

*5.4

196.0

6.32

389

Nov.

5.2 TT9~

4.5

4.5

4.5

4.5

4.1

3.8 5TB3.8

4.0

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.

4.1

4.0

4.0

4.0

4.0

-

125.3

4.18

249

Dec.

3.7

5.6

5.4

3.4

5.2

5.5

4.0

4.2 TT2~

4.0

5.8

5.8

3.8

3.8

3.8

3.8

3.8

5.8

3.8

3.8

3.8

3.8

3.8

5.6

3.8

3.8

3.8

3.8

5.8

4.0

5.8

117.0

3.77

252

Jan.

5.5

108.5

5.5

215

Feb.

5.0

-

-

"

84.0

5.0

167

Mar.

2.7

85.7

2.7

166

Apr.

> 2.7

^ 4.0

1-

 10

-

104.5

5.48

207

May

11

11

"IU 10

*12

16

21

22

23

27

36

42

38

51

51

56

45

62

69

74

75

90

*108

121

152

145

146

158 TJO"

127

118

1,985

64.0

5,940

June

102

80

66

56

*55

52

51

49

54

57

61

67

80

94

102

*115

117

112

105

98

90

84

75

69

68

66

65

62

59

55

2,260

75.5

4,480

July

5249"

47

46

45

41

59

57

56

34

32

30

*28

27

26

24

24

23

24

25

22

22

21

20

19

18

18

17

15

14

15

884

28.5

1,750

Aug.

13

15

TT

15

14

13

15

12

12

12

12

11

11

11

11

11

10

10

10

10

10

10

11

11

11

10

10

9.2 9"76

9.8

*9.5

550.9

11.5

696

Sept.

8.6

8.2

7.9

8.2

7.1

7.6

7.6

7.4

7.4

6.8

7.4

7.4

6.5

7.6

7.9

9.0

375

6.2

"S7Z 6.0

6.5

7.1

6.5

*6.8

7.1

6.8

6.2

6.2

6.2

6.8

-

216.2

7.21

429

Calendar year 1950: Max - Mln - Mean - Ac.ft -

Water year 1950-51: Max 158 Mln - Mean 17.8 Ac-ft 12,920

Peak discharge (base, 120 cfs). --May 26 (5 p.m.) 188 cfs (5.17 ft); June 16 (8:30 p.m.) 124 cfs

(4.62 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 1-9, Dec. 31 to Jan. 6. No gage-height record1 

Oct. 1-30, Jan. 7 to May 4 (stage-discharge relation affected by ice during part of period), July 19

to Aug. 30; disc 

nearby stations.
GREEN RIVER BASIN 175 

Green River near Fontenelle, Wyo.

Location. Lat 42°07', long. 110°11' , in SW^- sec. 20, T. 25 N., R. L12 W. , on right bank 

15 miles downstream from Muddy Creek, and 4 miles northwest of Fontenelle.

Drainage area.--3,970 sq mi.

Record? available.--October 1946 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,480 ft (from highway elevations).

Average discharge.--5 years, 1,961 cfs.

Extremes.--Maximum discharge during year, 12,300 cfs May 31 (gage height, 8.11 ft); minimum 

daily, 395 cfs Dec. 5.

1946-51: Maximum discharge, that of May 31, 1951; minimum daily, 290 cfs Feb. 13-17, 

1948.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, 

wnTch are fair. Natural flow of stream affected by storage reservoirs, power developments, diversions for irrigation, and return flow from Irrigated areas.

Rating table, water year 195O-51, except periods of ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

2.8 

3.0 

3.5 

4.0

360

510

1,040

1,790

5.0 

7.0 

8.3

3,580

8,600

13,000

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,040

1.070

1,040

1,000

*975

962 94'9

962

962

949

949

936

936

910

910

910

923

910

866

886

874

874

874

862

862

874

898

949

975

975

975

29,057

937

57,630

Mov.

962

962

962

962

949

949

949

1,010

1,150

750

470

910

1,190

1,190

1,250

949

874

1,180

1,110

1,050

1,110

1,110

1,110

1,080

988

1,000

1,010

1,010

*1,040

975

-

30,211

1,007

59,920

Dec.

1,050

886

790

790

395

446

580

610

660

700

720

700

670

600

660

650

620

600

*650

660

660

620

620

620

640

640

609

555

546

600

600

20,127

649

39,920

Jan.

570

570

590

600

590

560

540

530

550

560

580

550

580

620

640

630

600

620

640

600

550

560

*610

640

630

620

630

600

560

550

540

18,210

587

36,120

Feb.

540

580

640

660

670

680

720

*730

740

750

750

720

650

620

615

630

650

670

670

640

660

670

680

680

660

660

690

665

_

_

-

18,690

668

37,070

Mar.

640

630 '630

640

660

650

650

660

680

650

640

645

660

*680

720

700

680

670

690

720

800

800

780

860

925

915

890

900

980

1,110

1,140

23,395

755

46,400

Apr.

1 , 290

1,'290

*1,490

1,630

1,850

2,O30

2,030

2,060

2,080

1,930

*1,760

1,760

2,110

2,420

2,390

2,300

2,340

2,590

2,960

2,900

2,680

2,270

2,390

2,680

2,680

2,720

2,560

2,590

5,280

-

66,380

2,213

131,700

May

3,100

2,590

2,240

2,010

2,030

2,470

3,000

*3,320

3,260

3,240

3,300

3,520

3,940

4,090

3,620

3,540

*3,460

3,540

3,810

4,340

4,890

5,310

5,690

5,960

*6,340

6,990

7,600

8,380

9,880

11,600

*12,200

149,260

4,815

296,100

June

12,000

12,200

11,200

9,850

8,100

6,650

5,740

5,050

4,470

4,150

4,130

4,180

4,520

5,050

5,910

5,760

7,860

9,340

10,900

11,500

*11,500

11,000

10,300

9,340

8,190

7,400

6,830

6,390

6,270

6,290

-

233,050

7,768

462,200

July

6,290

6,220

5,960

5,740

5,720

5,930

6,080

6,080

6,000

*5,910

5,760

5,960

6,050

5,330

4,680

4,360

4.270

4,290

4,450

4,590

5,160

5,910

5,910

5,640

4,980

4,430

4,270

4,450

4,590

4,610

4,500

164,120

5,294

325,500

Aug.

4,43O

4,430

4,470

4,820

5,090

5,000

4,680

4,400

4,150

3,870

*3,500

3,140

2,850

2,630

2,510

2,390

2,250

2,090

1,970

1,970

1,980

2,080

2,190

2,300

2,250

2,210

2,080

1,920

1,820

1,790

1,900

93,160

3,005

184,800

Sept.

2,110

2,030

1,950

1,850

1,730

1,630

1,580

1,550

1,490

1,400

1,320

*1,280

1,280

1,260

1,240

1,190

1,140

1,100

1,080

1,030

975

b62

1,030

1,050

1,050

1,000

975

988

988

988

-

39,246

1,308

77,840

Calendar year 1950 : Max 11, EDO Mln 34O Mean 2,416 Ac-ft 1,749,000

Water year 1950-51 : Max 12,20O Mln 395 Mean 2,424 Ac-ft 1,755,000

Peak discharge (base, 5,500 cfs). --May 31 (10 a.m. 

cfs (7.90 ft); July 22 (9 p.m.) 6,030 cfs (6.07 ft).

) 12,300 cfs (8.11 ft); June 2o (1O p.m.) 11,600 

.07 ft).

Discharge measurement made on this day. 

Mote. Stage-discharge relation affected by ice Dec. 7-26, Dec. 31 to Mar. 29 (no gage-height record Jan. 31 to Feb. 7; discharge estimated on basis of weather records and records for nearby stations) .
17(3 GREEN RIVER BASIN

Fontenelle Creek near Fontenelle, Wyo.

Location. Lat 42°06', long. 110°13', in sec. 3, T. 24 N., R. 113 W., on left bank 6 miles 

west"of Fontenelle.

Drainage area.--224 sq mi.

Records available.--May 1915 to September 1919, October 1931 to September 1951.

Gage.--Water-stage recorder. May 21, 1915, to Sept. 30, 1919, staff gage at different daurn, and Oct. 15, 1931, to July 29, 1938, staff gage at datum 0.90 ft higher than present datum, at bridge 150 ft upstream.

Extremes . --Maximum discharge during year, 680 cfs May 30 (gage height, 3.70 ft); minimum 

daily, 32 cfs Jan. 2, 30, 31.

1915-19, 1931-51: Maximum discharge observed, 922 cfs Apr. 19, 1938 (gage height, 

4.00 ft, site and datum then in use), from rating curve extended above 380 cfs; no flor<j 

Aug. 1-5, Aug. 23 to Sept. 15, 1934, June 27-30, Sept. 18-27, 1940.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.2 

1.4 

1.8 116

2.5 

3.0 

3.7

275

415

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

41

41

38

37 *37

37

38

38

39

41

41

Nov.

43

47

54

4T

45

45

45

54

42

34

40

411 44

41

40

39

39

40

39

39

40

40

40

39

38

39

41

41

46IB45

43

1,243

40.1

2,470

48

52

48

44

50

52

47

48

50

50

49

45

45

45

43

Dec.

41

45

4T

*39

34

38

41

43

41

40

40

41

41

41

39

39

40

43

44

44

38

37

38

38

36

37

39

41 ] 40

45

*47

-

1,386

46.2

2,750

40

40

38

1,238

39.9

2,460

Jan.

34

32

3T

38

*3T

35

33

33

33

33

34

33

35

36

36

35

35

36

35

33

33

34

35

36

37

37

37

36

34

32

32

1,075

34.7

2,130

Feb.

33

35

38

43

46

47

48

*50

52

5?

52

52

52

50

48

45

45

47

49

43

45

47

47

45

45

46

44

42

_

_

-

1,288

46.0

2,550

Mar.

39

39

38

40

41

42

43

45

46

42

37

36

12

*40

42

39

38

40

42

43

44

45

44

42

44

45

43

44

47

48 ~ZG

1,306

42.1

2,590

Apr.

45

HO

73

*95

109

141

159

185

220

258

175

*155

200

310

340

250

272

337

376

582

298

230

225

328

325

260

240

265

320

355

-

6,978

233

13,840

May

225

192

175

TBU

230

300

349

*358

298

302

320

320

346

*312

280

397

528

443

376

406

482

524

520

499

513

552

556

596

648

668 &T?

12,507

403

24,810

June

624

632

FT?

544

*496

415

367

340

320

312

318

315

328

352

376

376

409

446

436

400

376

358

331

315

282

255

*235

218

205

190

-

11,143

371

22,100

July

180

TTT

163

161

147

139

131

122

122

*120

118

116

109

98

90

83

64

64

59

58

62

70

62

54

49

49

52

67

76

78

79

3,013

97.2

5,980

Aug.

*70

71

73

88

90

76

71

70

70

68

65

62

62

64

64

62

61

58

57

59

59

62

67

67

61

57

55

-5Z 54

55

59

2,011

64.9

3,990

Sept.

64

6?

57

52

50

49

46

45

43

43

43

*45

46

45

43

43

41

40

40

39

38

W

41

40

39

38

38

39

39

39

1,329

44.3

2,640

Calendar year 1950: Max 632 Min 20 Mean 129 Ac-ft 93,230

Water year 1950-51: Max 668 Hln 32 Mean 122 Ac-ft 88,310

Peak discharge (base, 150 efs).--Apr 

(2.95 ft); May 7 (

, .. 4 p.m.) .. 443 cfs (3.08 ft); Apr. 30 (11 a.m.) 400 cfs

10 p.m.) 391 cfs (2.92 ft); May 17 (8:30 p.m 

.m.)

. . ..

. .. . ..) 552 cfs (3.38 ft); May 30 (11 a.m.)

680 cfs (3.70 ft); June 18 (11 a.m.) 660 cfs (3.65 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 8-22, Dec. 3 to Mar. 31 (no gage-height record Jan. 18 to Feb. 8; discharge estimated on basis of 1 discharge measurement, weather records, and 

records for nearby stations).
GREEK RIVER BASIN 177

Big Sandy Creek at Leckie Ranch, near Big Sandy, Wyo.

Location.--Lat 42°35', long. 109 0 !? 1 , in sec. 18, T. 30 N., R. 104 W., on left bank at

LecKie Ranch, half a mile downstream from Squaw Creek,and 9 miles southeast of Big Sandy.

Drainage area.--94 sq mi, approximately.

Records available.--July 1910 to August 1911, July 1939 to September 1951 (no winter records 1910-11, 1942-45).

Gage.--Water-stage recorder. Altitude of gage is 7,800 ft (by barometer). Prior to Sept. 

 2"7, 1910, staff gage, and Sept. 27, 1910, to Aug. 31, 1911, chain gage, at sites near 

present location but at different datum.

Average discharge.--8 years (1939-41, 1945-51), 88.2 cfs.

Extremes.--Maximum discharge during year, 984 cfs May 28 (gage height, 6.32 ft); minimum 

not determined.

1910-11, 1939-51: Maximum discharge, 1,180 cfs June 17, 1950 (gage height, 6.85 ft), 

from rating curve extended above 830 cfs on basis of slope-area determination of peak 

flow; minimum discharge observed, 4.8 cfs Jan. 4, 1940 (discharge measurement), but may 

have been less during period of ice effect.

Remarks.--Records good except those for period of no gage-height record, which are poor. 

Few diversions above station for irrigation of hay meadows.

Rating tables, water year 1950-51, except period of ice effect 

Igage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Dec. 31

3.2 25

3.4 39

3.6 59

Jan. 1 to Sept. 30

3.2 

3.6 

4.0 

5.0

130

375

5.5 

6.0 

6.3

555

800

970

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

49

45

44

44

42

41

40

42

43

40

37

36

36

34

33

31

*31

31

29

23

26

26

26

25

28

30

28

29

33

34

35

1,078

34.8

2,140

Nov.

30

32

33

37

34

31

29

28

25

2!

27

31

33

*35

34

31

32

33

33

30

30

32

30

28

28

27

27

26

25

24

-

896

29.9

1,780

Dec.

(*)

24

744

24

1,480

Jan.

22

682

22

1,350

Feb.

19

_

_

-

532

19

1,060

Mar.

20

(*)

620

20

1,230

Apr.

40

-

1,200

40

2,380

Calendar year 1950 : Max 934 Mln - Mean 127

May

66

60

60

75

85

100

115

110

115

*130

150

190

180

ISO

140

160

190

230

300

340

370

420

*527

605

615

625

740

922

TT5

564

625

9,774

315

19,390

June

564

405

324

285

265

248

*248

230

23B

265

278

295

330

422

503

680

745

620

564

*519

468

430

363

348

390

360

339

363

354

308

-

11,751

392

23,310

July

302

302

327

345

345

312

298

282

258

242

235

225

205

202

198

195

*200

200

182

188

248

208

176

160

150

146

146

148

150

148

140

6,863

221

13,610

Aug.

134

134

184

202

218

182

168

142

128

116

105

98

89

84

77

72

67

64

63

63

*70

66

72

76

64

59

54

53

54

56

76

3,090

99.7

6,130

Sept.

102

89

76

69

63

58

58

54

52

47

45

44

43

42

40

39

33

37

41

38

*35

33

33

32

30

28

25

zS

28

30

-

1,374

45.8

2,730

Ac-ft 92.170

Water year 1950-51 : Max 922 Mln - Mean 106 Ac-ft 76^590

Peak discharge (base, 400 cfs).--Hay 28 (4 a.m.) 984 cfs (6.52 ft); June 17 (5 a.m.) 916 cfs (6.21 tj:

* Discharge measurement made on this day.

Note. No gage-height record Nov. 9 to May 22 (stage-discharge relation affected by ice during 

ost of period); discharge estimated on basis of 4 discharge measurements, weather records, and recrds for stations on nearby streams.
GREEN RIVER BASIN

Little Sandy Creek near Elkhorn, Wyo.

Location. Lat 42°32', long. 109°13', in see. 35, T. 30 N., R. 104 W., on right bank 7 miles 

northeast of Elkhorn.

Drainage area.--20.9 sq mi.

Records available. July 1939 to September 1951 (no winter records 1942-45).

Gage.--Water-stage recorder. Altitude of gage is 8,000 ft (from Forest Service map).

Average discharge.--8 years (1939-41, 1945-51), 22.0 cfs.

Extremes. Maximum discharge during year, 178 cfs June 17 (gage height, 3.51 ft); minimum 

not determined.

1939-51: Maximum discharge, 234 cfs June 9, 1947 (gage height, 4.15 ft); maximum 

gage height, 4.25 ft June 26, 1944; minimum discharge observed, 0.9 cfs Jan. 4, 1940 

(discharge measurement), but may have been less during period of ice effect.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Continental Divide ditch diverts water above station to Lander Creek 

in North Platte River basin (appropriation 13.76 cfs) and to lands along Mitchell 

Slough in Little Sandy basin (appropriation 8.95 cfs). Water rights totaling 35.15 

cfs (priorities 1902-9) for irrigation of about 2,460 acres adjudicated by Wyoming for 

diversion above station.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 7 to Nov. 2, Nov. 5-7)

1.9 

2.1 

2.4 35

2.7 

3.0 

3.5

104

176

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

15

14

14

14

14

15

15

15

15

15

15

16

16

15

*15

15

15

14

14

13

T5

13

13

13

13

14

14

15

15

448

14.5

889

Nov.

15

15

15

17TB13

13

11

10

9.0

11

12

12

13

12

11

11

12

11

10

11

11

11

10

10

9.5

9.5

9.0

9.0

8.5

-

347.5

11.6

689

Dec.

8.0

248.0

8.0

492

Jan.

7.0

217.0

7.0

430

Feb.

6.0

_

_

-

168.0

6.0

333

Mar.

6.0

(*)

186.0

6.0

369

Apr.

10

-

300

10

595

May

14

13T3"

15

18

22

25

24

30

*39

34

41

31

25

29

35

30

39

45

45

48

51

*61

65

68

65

74

94

125

128

129

1,475

47.6

2,930

June

117

92

74

64

57

51

48

*42

40

39_

39

40

44

50

65

122

166

T5T

145

*136

122

107

87

87

81

88

90

99

101

92

-

2,539

84.6

5,040

July

86

84

95

118

148

131

124

118

104

92

84

73

64

64

69

72

*74

69

64

74

90

83

69

62

57

56

52

49

STf

51

49

2,475

79.8

4,910

Aug.

47

46

52

61

63

61

56

50

44

38

34

32

30

28

27

26

24

21

21

21

*22

22

22

22

20

20

20

19

IF

20

22

1,010

32.6

2,000

Sept.

22

2TT

19

19

18

17

17

17

16

16

15

16

15

15

15

14

14

14

14

13

*13

13

12

12

11

10

10

9.8

9.5

5TF

-

435.8

14.5

864

Calendar year 1950: Max 194 Mln - Mean 32.4 Ac-ft 23,470

Water year 1950-51: Max 166 Min - Mean 27.0 Ac-ft 19,540

Peak discharge (base 

(3.51 ft);July 5(8

120 cfa) . May 30 (1:30 a.m.) 136 cfs (3.23 ft); June 17 (10 a.m.) 178 cfs 

f t); J- .) 155 cfs (3.36 ft).

Discharge measurement made on this day 

Note. Stage-discharge relation affected by ice Nov. 3, 4, 8-30. No gage-height record D< 

May 9 (stage-discharge relation affected by ice during part of period); discharge estimated 

of 1 discharge measurement, weather records, and records for nearby stations.
GREEN RIVER BASIN 179

Green River near Green River, Wyo.

Drainage area.--About 10,000 sq mi, of which 300 sq mi is probably noncontributing.

Records available.--April to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 6,050 ft (from river-profile map).

Extremes.--Maximum discharge during period, 13,600 cfs June 3 (gage height, 7.37 ft); miniKun daily, 1.S40 cfs Sept. £1-23.

Remarks.--Records good. Natural flow of stream affected by transmountain diversions, storage reservoirs, power developments, diversions for irrigation, and return flow from irrigated areas. Records of chenical analyses, water temperatures, and sediment loads for 

the water year 1951 are given ri rfater-Supply Paper 1200.

Rating table, April to September 1951 (gage height, In feet, 

and discharge, In cubic feet per second)

Discharge, In cubic feet per second, April to September 1951

Apr. July Aug.

Total 

Mean 

Ac-ft

Ac-ft 

Ac-ft

3 (8

Discharge measurement made on this day. 

a No gage-height record; discharge estimat 

near Llnwood, Utah.

d on basis of records for static
180 GREEN RIVER BASIN

Blacks Fork near Millburne, Wyo.

Location. Lat 41°03', long. 110 "34', in sec. 35, T. 13 N., R. 117 W., on right bank Smiles 

downstream from Little West Fork, 4| miles north of Utah-Wyoming State line, and 15 miles 

southwest of Millburne.

Drainage area. 156 sq mi.

Records available.--July 1939 to September 1951 (no winter records 1942-45).

Gage.--Water-stage recorder. Altitude of gage not determined. Prior to Nov. 5, 1948, at 

site on left bank 150 ft upstream at different datum.

Average discharge.--8 years (1939-41, 1945-51), 152 c'fs.

Extremes. Maximum discharge during year, 1,590 cfs May 28 (gage height, 3.04 ft), from 

rating curve extended above 830 cfs; minimum not determined, occurred during periods of 

ice effect.

1939-51: Maximum discharge, 1,960 cfs June 26, 1944 (gage height, 3.46 ft, site and 

datum then in use), from rating curve extended above 1,000 cfs; minimum not determined, 

occurred during periods of ice effect or no gage-height record.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion above station.

Revisions (water years).--W 929: 1940.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 3O to July 15, Au<2. 24 to Sept. 30)

77

134

1.5 305

2.0 590

3.0 1,520

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

51

46

53

50

50

54

50

58

54

48

46

43

41

40

42

46

47

*41

41

41

39

39

39

39

39

37

37

39

54

50

47

1,401

45.2

2,780

Nov.

35

51

37

44

43

46

43

48

42

34

42

38

*47

44

41

39

41

42

41

39

38

38

39

39

37

35

34

35

34

32

-

1,198

39,9

2,380

Dec.

(*)

23

713

23

1,410

Jan.

18

558

18

1,110

Feb.

18

_

_

-

504

18

1,000

Mar.

22

682

22

1,350

Apr.

27

3T

34

34

36

36

37

39

39

37

39

41

45

50

54

54

63

61

65

67

61

51

59

70

61

65

67

82

89

74

-

1,568

52.3

3,110

May

64

65

64

83

127

*189

236

232

224

240

355

40O

332

282

*232

213

213

296

346

466

527

527

614

*697

823

886

1,150

1,410

1,280

1,170

1,010

14,753

476

29,260

June

841

679

527

436

*412

406

406

442

484

430

380

424

541

733

841

985

1,010

922

742

715

706

569

508

502

614

598

638

679

697

638

-

18,505

617

36,700

July

606

622

614

576

548

502

478

448

424

*406

390

370

341

318

305

280

260

240

250

270

280

240

190

140

150

160

170

160

180

210

180

10,308

333

20,450

Aug.

150

170

190

210

240

190

170

150

130

120

110

100

90

84

80

78

7F

80

94

120

150

170

170

*144

114

106

100

98

100

114

104

4,004

129

7,940

Sept.

~94 110

92

90

84

83

80

78

74

73

70

70

68

65

64

63

62

63

61

58

58

58

58

57

52

51

51

52

53

54

-

2,046

68.2

4,060

Calendar year 1950: Max 1,060 Mln - Mean 162 Ac-ft 117,600

Water year 1950-51: Max 1,410 Min - Mean 154 Ac-ft 111,600

Peak discharge (base. 1,100 efa) May 28 (11:30 p.m.) 1,590 cfs (3.04 ft); June 17 (12 p.m.) 1,180 

cfs (2.55 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 14 to Apr. 2. No gage-height record Oct. 6- 

17, Nov. 9-13 (stage-discharge relation affected by ice during most of period), July 16 to Aug. 23; 

discharge estimated on basis of 1 discharge measurement, weather records, recorded range in stage, 

and records for nearby stations.
GREEN RIVER BASIN 181

Blacks Fork near Urie, Wyo.

Location.--Lat 41°21', long. 110°20', In sec. 24, T. 16 N., R. 115 W., on left bank 2 miles 

downstream from Quartz Creek and 2j miles north of Urie.

Drainage area.--261 sq mi.

Records available.--August 1913 to September 1924 (no winter records-), October 1937 to September 1951.

Gage. Water-stage recorder at present site since Apr. 2, 1939. Altitude of gage is not

 determined. Aug. 21, 1913 to Sept. 30, 1924, staff gage at former bridge on abandoned 

channel 800 ft upstream at different datum (datum lowered 0.50 ft Aug. 19, 1915). Oct. 

21, 1937 to Apr. 1, 1939, water-stage recorder on abandoned channel 500 ft upstream at 

different datum.

Average discharge.--14 years (1937-51), 56.9 cfs.

Extremes.--Maximum discharge during year, 1,190 cfs May 29 (gage height, 6.44 ft); minimum

 daily, 6.5 cfs Oct. 25.

1913-24, 1937-51: Maximum discharge observed, 2,680 cfs June 20, 1917 (gage height, 

4.72 ft, site and datum then in use); minimum daily, 0.2 cfs Sept. 2, 3, 1939.

Remarks.--Records good except those for periods of ice effect, no gage-height record, or 

backwater from beaver dam, which are poor. Water rights totaling 736.43 cfs (priorities 

1862 to 1940), for irrigation of about 57,300 acres, adjudicated by Wyoming for diversion 

above station. Diversions above station for supplemental supply to about 1,950 acres 

along Smith Fork. Supplemental supply for 80 acres imported from Smith Fork. Four small 

reservoirs above station (total adjudication, 1,136.35 acre-ft) for irrigation.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 9,

Nov. 11-14, Nov. 24 to Dec. 5, Sept. 5-30)

Oct. 1 to Dec. 31

1.5 

1.7

1.9

6.5

16

1.4 

1.7 

2.0 

3.0

Jan. 1 to Sept. 30

7.0 4.0

21 5.0

47 6.5

355

635

1,210

October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

16

18

15

*14

14

15

17

13

14

14

12

12

13

13

14

14

12

9.6

8.8

8.8

8.8

8.8

6.5

7.0

10

11

11

12

14

387.3

12.5

768

Nov.

14

14

14

14

14

»14

14

15

17

I2_

14

14

18

16

19

16

15

17

22

20

25

23

22

22

21

21

20

19

18

14

-

518

17.3

1,030

Dec.

15

28

29

25

23

(*)

, 26

796

25.7

1,580

Jan.

(*)

23

713

23

1,410

Feb.

(*)

30

_

-

840

30

1,670

Mar.

32

*36

50

47

49

51

54

54

47

43

42

48

48

45

40

48

47

39

39

39

54

80

55

46

56

74

61

42

41

54

57

1,518

49.0

3,010

Apr.

63

70

80

91

92

88

88

87

*87

95_

70

63

68

74

66

61

63

68

42

36

33

28

25

28

31

26

25

24

34

51

-

1,757

58.6

3,480

May

45

37

32

26

27

37

*79

67

68

129

72

83

78

*59

50

62

32

30

33

76

150

144

180

244

388

582

775

*1,010

1,110

842

764

7,311

236

14,500

June

501

355

208

116

61

40

*33

26

20

21

24

22

21

24

56

168

311

398

351

323

277

254

113

74

84

84

75

70

74

71

-

4,255

142

8,440

July

52

41

33

33

25

24

22

21

*26

24

22

21

21

21

21

21

24

23

23

31

79

97

45

30

25

24

31

216

158

62

40

1,336

43.1

2,650

Aug.

31

28

49

183

133

80

79

74

56

46

35

*27

23

22

18.

18

18

18

18

20

24

28

30

27

27

23

19

18

19

20

25

1,236

39.9

2,450

Sept.

31

29

29

25

21

18

15

12

14

11

10

8.2

*8.2

7.S

9.0

8.6

8.4

8.2

8.2

7.8

8.6

8.6

9.8

9.4

8.2

7.8

7.4

7.4

7.4

8.2

-

372.0

12.4

738

Calendar year 1950 : Max 798 Min'2.5 Mean 82.8 Ac-ft 59,91O

Water year 1950-51 : Max 1,110 Min 6.5 Mean 57.6 Ac-ft 41,73O

Peak discharge (base, 45O cfs) May 29 (4:30 p.m.) 1,190 cfs (6.44 ft); June 18 (2 p.m.) 48O cfs 

(4.50 ft); July 28 (5:30 p.m.) 858 cfs (5.62 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10, 15-23, Dec. 6 to Mar. 11 (no gage-height 

record Dec. 7 to Mar. 1; discharge estimated on basis of 2 discharge measurements, weather records, 

and records for nearby stations). Backwater from beaver dam Sept. 4-30.

256684 O - 53 - 13
182 GREEN RIVBR BASIN

East Fork of Smith Fork near Robertson, Wyo.

Location.--Lat 41°03', long. 110°24', in NE-J- sec. 5, T. 12 N., R. 115 W., on left bank 

 i mile upstream from Gilbert Creek and 11 miles southeast of Robertson.

Drainage area.--53.0 sq mi.

Records available.--July 1939 to September 1951 (no winter records 1942-45).

Gage.--Water-stage recorder. Altitude of gage not determined.

Average discharge.--8 years (1939-41, 1945-51), 44.0 cfs.

Extremes.--Maximum discharge during year, 521 cfs May 29 (gage height, 2.49 ft), from 

rating curve extended above 310 cfs; minimum not determined.

1939-51: Maximum discharge, 644 cfs June 26, 1944 (gage height, 3.21 ft), from 

rating carve extended above 370 cfs; no flow part of each day Apr. 17-22, 24, 25, 1950; 

minimum gage height, -0.70 ft Apr. 22, 1950.

Remarks. Records poor. No diversion above station. 

Revisions.--W 979: Drainage area.

Rating tables, water year 195O-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Hay 29 to June 22}

Oct. 1 to Hay 24

0.2 

.3 

.6

6.0 

9.0

1.0 

1.4 

1.6

Hay 25 to Sept. 3O

66

126

170

0.2 

.4 

.6 

.9

1.5 

2.0 

2.5

148

290

485

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

13

13

13

13

13

12

11

12

12

12

12

12

11

*11

*9.8

11

11

9.0

8.7

8.4

8.4

8.1

8.1

8.1

10

11

11

348.6

11.2

691

Nov.

7.8

9.0

11

9.8

11

11

10

11

9.0

b7.0

b8. 5

blO

bll

*11

11

9.8

12

IS

10

11

11

9.8

11

11

10

9.4

9.4

9.4

9.0

9.0

299.9

10.0

595

Dec.

8.1

7.8

~9\4 11

8.7

*8.7

9.0

9.O

9.0

8.4

8.4

8.1

7.8

7.2

7.5

7.5

7.5

7.2

6.9

6.9

6.9

6.6

6.6

6.6

6.6

6.3

6.0

673

b6.5

b6.5

6.0

235.0

7.58

466

Jan.

(*)

6.0

186.0 '

6.0

369

Feb.

7.0

_

_

-

196.0

7.0

389

Mar.

8.5

263.5

8.5

523

Apr.

13

14

15

17

16

15

14

14

14

«15

15

13

13

14

14

14

13

12

*12

14

15

14

13

15

15

13

14

15

19

15

-

429

14.3

851

May

14

14

13

*20

27

38

41

45

45

41

47

49

48

*54

51

46

47

65

67

79

10O

92

118

158

*204

255

341

iil

405

389

385

3,715

120

7,370

June

283

230

194

166

143

*130

111

96

104

93

78

76

102

175

194

283

341 3"3T

294

262

204

146

140

130

160

155

160

180

185

165

-

5,317

177

10,550

July

160

160

170

ISO

140

130

125

120

115

*110

105

100

94

88

82

72

68

64

62

74

90

76

62

41

42

46

54

52

60

76

48

2,866

92.5

5,680

Aug.

52

58

70

~98 115

82

64

54

46

42

35

30

26

24

23

21

20

21

22

24

54

52

44

*36

34

32

31

31

32

33

32

1,338

43.2

2,650

Sept.

32

30

28

27

26

26

25

23

22

22

21

21

21

20

19

19

19

18

18

18

18

18

17

17

*16

15

15

15

16

16

-

618

20.6

1,230

Calendar year 1950: Max 357 Mln - Mean 42.3 Ac-ft 30,650

Water year 195O-S1: Max 417 Min _ Mean 43.3 Ac-ft 31,360

Peak discharge (base. 500 cfs).--Hay 29 (2 a.m.) 521 cfs (2.49 ft); June 18 (4 a.m.) 437 cfs 

(2.25 ft),

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 31 to Apr. 18 (stage-discharge relation affected by ice during 

most of period), June 23 to Sept. 30; discharge estimated on basia of 6 discharge measurements, weather 

records, recorded range in stage, and records for nearby stations.
GREEN RIVER BASIN 183

West Fork of Smith Fork near Robertson, Wyo.

Location. Lat 41°01', long. 110°29', in sec. 15, T. 12 N., R. 116 W., on left bank threequarters of a mile downstream from Archie Creek and 13 miles southwest of Robertson.

Drainage area.--37.2 sq mi.

Records available.--July 1939 to September 1951 (no winter records 1940, 1942-45).

Gage.--Water-stage recorder. Altitude of gage not determined.

Average discharge.--? years (1940-41, 1945-51), 21.9 cfs.

Extremes. Maximum discharge during year, 840 cfs May 29 (gage height, 3.00 ft); minimum 

not determined, occurred during period of no gage-height record.

1939-51: Maximum discharge, 920 cfs May 30, 1950 (gage height, 3.08 ft); minimum observed, 0.2 cfs Aug. 13, 1940, Feb. 25, 1941 (discharge measurement), but may have been 

less during winter.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion above station.

Revisions (water years).--W 929: 1940.

Rating tables, water year 1950-51, except periods of lee effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 15 to Nov. 9)

Oct. 1 to Nov. 30 Dec. 1 to Sept. 30

0.4

.5

1.8 

3.0 

5.6 

9.2

0.3 

.4 

.5 

.6

2.7 

3.3 

4.5 

8.0

1.7 

2.0 

2.4

60

125

210

385

Discharge, in cubic feet per second, water year October 195O to Septembe

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2.8

378

3.0

2.9

3.8

3.5

4.3

4.0

3.8

3.5

3.3

3.0

2.9

3.5

4.0

4.0

*3.0

2.9

2.9

2.9

2.8

2.9

3.0

3.0

2.8

3.3

4.8

6.7

6.7

5.6

112.4

3.63

223

Nov.

3.8

6.3

375

4.6

5.1

5.3

4.8

 .3

5.6

3.0

3.5

3.0

4.0

276

4.0

4.1

4.3

4.3

4.1

4.O

4.0

4.1

4.3

4.2

4.0

3.9

3.8

4.O

3.8

-

124.0

4.13

246

Dec.

3.8

5.0

472

4.5

4.8

*4.5

4.5

4.5

4.4

4.3

4.3

4.3

4.1

4.1

4.1

4.1

4.0

3.9

4.0

4.0

3.9

3.6

4.0

4.0

4.0

3.6

3.4

3.7

3.8

3.7

3.3

126.4

4.08

251

Jan.

3.0

93.0

3.0

184

Feb.

3.5

_

_

-

98.0

3.5

194

Mar.

4.5

139.5

4.5

277

Apr.

11

12

13

14

13

12

9.8

8.8

9.4

9.2

*8.0

871

10

13

15

17

18

17

18

18

22

22

20

24

23

21

23

30

29

24

-

492.6

16.4

977

May

22

20 55

30

44

60

69

62

65

71

110

110

105

*78

60

70

60

70

80

110

170

170

210

240

*316

341

363

273

253

204

156

4,034

130

8,000

June

~55 125

76

67

64

*67

74

74

73

64

54

54

65

80

85

100

108

102

85

71

82

69

53

47

56

50

44

43

39

36

-

2,100

70.0

4,170

July

33

3?

30

29

26

24

22

22

20

*19

18

17

16

14

14

14

14

12

12

15

24

18

12

10

IT

14

17

16

20

25

16

586

18.9

1,160

Aug.

18

21

29

36

24

20

15

12

10

8.4

7.0

6.2

5.6

4.8

4.5

4.3

±1°

4.3

4.3

8.4

18

20

14

*12

8.0

6.6

5.6

5.2

4.9

6.2

6.2

353.4

11.4

701

Sept.

7.0

57?

5.6

4.8

4.4

4.1

3.9

3.8

3.5

3.5

3.4

3.5

3.5

3.4

3.3

3.3

3.2

3.3

3.2

3.2

30.

372

3.2

3.2

3.2

3.1

*3.2

3.2

3.4

3.4

-

112.0

3.73

222

Calendar year 195O: Max 386 Mln - Mean 23.3 Ac-ft 16,900

Water year 1950-51 : Max 363 Mln - Mean 22.9 Ac-ft 16,6OO

Peak discharge (base. 28O efs). May 29 (6 p.m.) 840 efs (3.00 ft).

Discharge measurement made on this day.

records, recorded range in stage, and records for nearby stations,
184 GREEN RIVER BASIN

Smith Fork at Mountainview, Wyo.

Location.--Lat 41°16', long. 110°20', in sec. 23, T. 15 N., R. 115 W., on right bank at 

highway bridge on southwestern edge of Mountainview.

Drainage area. 192 sq mi.

Records available. October 1941 to September 1951.

Gage. Water-stage recorder. Altitude of gage not determined.

Average discharge. 10 years, 52.9 cfs.

Extremes. Maximum discharge during year, 840 cfs May 28 (gage height, 4.34 ft); minimum 

daily, 5.5 cfs Sept. 13.

1941-51: Maximum discharge, 1,060 cfs May 20, 1948 (gage height, 4.23 ft); maximum, 

gage height, that of May 28, 1951; minimum daily discharge, 2.5 cfs Aug. 30, 1948.

acreage Just listed includes about 1,950 acres that get supplemental supply diverted 

from Blacks Fork and also includes 80 acres along Blacks Fork that get supplemental 

supply form Smith Fork,

One small reservoir (adjudication for 305.66 acre-ft) used for irrigation above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 28 May 29 to Sept. 30

1.3 

1.5 

2.0

10 2.5 

3.0 

4.0

150

280

680

1.1 

1.3 

1.5 

1.7

4.5

11.5

23

41

2.0 80

2.5 168

3.0 290

4.0 680

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

13

12

*12

12

12

12

12

12

11

10

T3

11

12

11

11

12

12

14

14

14

14

14

14

15

18

18

18

18

410

13.2

813

Nov.

18

19

19

17

17

*17

16

16

17

I!

14

16

18

18

16

15

16

17

18

19

20

T5

20

19

19

19

19

17

19

20

-

527

17 .6

1,050

Dec.

19

29

Z6

27

22

21

*26

26

27

29

24

24

22

20

19

19

19

18

19

19

19

17

18

18

18

17

16

T7

17

18

16

646

20.8

1,280

Jan.

14

15

16

*16

16

15

14

13

14

14

16

14

16

17

18

17

18

18

16

15

15

16

17

18

li

19

19

18

16

17

15

501

16.2

994

Feb.

*16

IT

18

17

18

19

20

20

21

IS

21

20

20

21

21

21

20

20

19

19

20

21

21

20

20

19

20

19

_

-

-

550

19.6

1,090

Mar.

*18

20

19

20

21

20

23

23

25

22

22

23

25

26

26

24

23

23

25

27

28

27

28

30

31

30

29

28

29

30

32

777

25.1

1,540

Apr.

36

IF

56

65

BT

57

54

52

*52

58

43

41

43

54

57

50

52

55

54

65

63

50

46

54

52

45

42

43

54

62

-

1,563

52.1

3,100

May

51

48

40

4TT

50

72

*88

82

81

75

69

109

102

*87

82

93

68

78

88

144

232

220

253

277

392

496

572

»635

'576" 680

468

6,348

205

12,590

June

460

365

252

208

186

164

*150

143

141

137

125

104

91

94

135

183

235

278

230

188

188

202

139

99

101

108

93

79

74

72

-

5,024

167

9,960

July

56

44

38

33

29

28

30

25

20

*18

22

22

23

21

19

21

22

30

23

33

108

73

32

18

14

14

18

38

-5T 111

35

1,069

34.5

2,120

Aug.

29

28

45

137

ITS

72

52

46

41

34

26

*22

18

15

12

12

12

12

14

16

24

29

30

26

23

18

14

13

10

I?

14

969

31.3

1,920

Sept.

15

T?

11

9.6

8.9

8.2

8.2

8.2

8.5

8.5

7.5

6.5

*5.5

£7?

B.£

8.S

8.?

7.e

7.8

7.1

7.5

8.5

8.9

8.9

8.9

7.8

7.5

8.2

9.3

9.6

257.5

8.58

511

Calendar year 1950: Max 701 Mln 4.7 Mean 63.2 Ac-ft 45,780

Water year 1950-51: Max 680 Mln 5.5 Mean 51.1 Ao-ft 36,970

Peak discharge (base, 570 cfs).--May 28 (1:30 p.m.) 840 efs (4.34 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10, 11, 15-22, Dec. 5-8, Dec. 15 to Mar.
GREEN RIVER BASIN 185

Blacks Fork near Lyman, Wyo.

Location. Lat 41°27 I , long. 110°10', in sec. 21, T. 17 N., R. 113 W., on right bank 500

 ft downstream from bridge on U. S. Highway 30 S, 4 miles downstream from Cottonwood 

Creek, and 12 miles northeast of Lyman.

Drainage area.--821 sq mi.

Records available.--October 1937 to September 1940, October 1941 to September 1951.

Gage. Water-stage recorder. Altitude of gage is not determined.

Average discharge. 13 years, 135 cfs.

Extremes.--Maximum discharge during year, 1,940 cfs May 29 (gage height, 5.92 ft); minimum

 daily, 15 cfs Sept. 27, 28.

1937-40, 1941-51: Maximum discharge, 2,390 cfs June 12, 1947 (gage height, 6.58 ft), 

from rating curve extended above 1,400 cfs; no flow Aug. 8, 15-22, 1940.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 whTch are poor. Water rights totaling 1,097.51 cfs (priorities 1862 to 1940), for irrigation of about 84,900 acres, adjudicated by Wyoming for diversion above station. Seven 

small reservoirs above station (total adjudication, 1,456.705 acre-ft) for irrigation 

and recreation.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.5 

1.8 

2.1 

2.5

Oct. 1 to June 7

3.0 

4.0 

6.0

350

820

1,990

June 8 to Sept. 30

1.1 

1.4 

1.8 

2.4

13 3.0 

4.0 

6.0

350

820

1,990

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

33

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

32

32

31

32

33

*32

32

32

32

33

30

31

30

27

27

29

30

29

29

28

2535-

26

27

27

26

29

34

3T

33

34

931

30.0

1,850

Nov.

38

40

40

40

39

*39

40

41

43

30

40

45

56

52

56

70

86

82

76

74

70

64

70

74

66

67

63

59

57

59

-

1,676

55.9

3,320

Dec.

55

28

(*)

43

1,330

42.9

2,640

Jan.

(*)

36

1,116

36

3,310,

Feb.

(*)

50

1,400

50

2,780

Mar.

*52

60

56

60

64

62

66

70

72

68

66

72

76

74

83

88

94

100

96

94

110

140

130

160

202

241

253

165

134

179

165

3,351

108

6,650

Apr.

176

173

205

226

253

338

336

314

*199

196

184

139

139

148

148

137

124

143

143

129

163

140

108

116

148

136

111

100

TVs

173

-

4,795

160

9,510

May

176

148

*131

102

(36

94

183

333

193

336

330

170

338

196

*190

343

335

143

143

358

495

640

625

645

710

980

1,340

 1,640

1,900

1,730

1,510

15,990

516

31,730

June

1,550

1,560

1,030'

735

530

423

»366

390

333

343

284

333

180

149

TfS

366

570

810

836

695

635

685

535

366

278

317

281

348

333

333

-

14,916

497

39,590

July

333

186

145

151

134

111

95

80

*75

73

73

65

61

59

57.

57

59

64

61

84

153

355

184

131

96

88

94

103

493

654

344

4,484

145

8,890

Aug.

311

375

345

466

530

308

363

335

190

15S

131

*108

93

79

69

62

54

50

48

49

88

75

79

90

80

68

61

49

45

ST

83

4,485

145

8,900

Sept.

95

73

63

56

53

48

43

34

38

25

33

30

*30

30

30

19

18

18

31

31

17

17

17

18

18

17

15

T5

16

17

-

881

39.4

1,750

Calendar year 1950: Max 1,740 Mln 8.0 Mean 185 Ac-ft 133,800

Water year 1950-51: Max 1,900 Mln 15 Mean 152 Ac-ft 109,800

Peak discharge (base. 900 cfs).--May 39 (6:30 p.m.) 1,940 cfs (5.93 ft); June 18 (10:30 p.m.) 914 

cfs (4.17 ft); July 30 (4 a.m.) 1,760 cfs (5,61 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 10-23, Dec. 3 to Mar. 34 (no gage-height record Jan. 1 to Feb. 38, Mar. 3-30); discharge estimated on basis of 3 discharge measurements, weather 

records, and records for nearby stations.
GREEN RIVER BASIN

Hams Fork near Frontier, Wyo.

Location. Lat 41°51', long. 110°33', SEiSE£ sec. 27 (revised), T. 22 N., R. 116 W., on 

right bank 800 ft upstream from highway bridge, li miles upstream from Willow Creek, 

and 34 miles northwest of Frontier.

Drainage area.--298 sq mi.

Records available.--Hay 1945 to September 1951.

Gage. Water-stage recorder. Altitude of gage not determined.

Average discharge.--6 years, 192 cfs.

Extremes. Maximum discharge during year, 1,460 cfs May 31 (gage height, 5.70 ft); minimum 

daily, 19 cfs Sept. 14, 15.

1945-51: Maximum discharge, 2,450 cfs May 19, 1950 (gage height, 6.74 ft); minimum 

daily, 6.0 cfs Sept. 2, 1948.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, 

wTTTch are fair. Water rights totaling 100.356 cfs (priorities 1881 to 1939), for irrigation of about 7,080 acres, adjudicated by Wyoming for diversion above station. Water 

rights for 4.45 cfs (priorities 1897, 1917), for municipal supply town of Kemmerer and 

mining, adjudicated for diversion above station. One reservoir for Kemmerer water supply (capacity 1,058 acre-ft) above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct , 1 to Jan. 31 Feb. 1 to May 17 May 18 to Sept. 30

2.0

2.1

2.2

2.3

3.5 

5.1

460

1,210

1.9

2.0

2.1

2.2 

2.5

20

30

44

102

3.0 240

4.0 620

5.0 1,100

5.7 1,460

Ischarge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

34

34

34

34

*34

36

35

34

34

37

64

66

6T

64

64

64

60

30

27

27

27

27

2755"

28

28

30

31

31

31 

31

1,197

38.6

2,370

Nov.

32

36

3T

34

34

34

34

32

27

23

30

28

30

33

31

*30

31

33

,35

36

35

34

33

34

35

34

33

32

33

35

975

32.5

1,930

Dec.

(*)

36

1,116

36

2,210

Jan.

(*)

33

"*

1,023

33

2,030

Feb.

32

C!

_

-

896

32

1,780

Mar.

(*)

71

2,201

71

4,370

Apr.

220 540"

265

340

420

500

520

500

470

492

510

500

*577

775

*955

838

834

930

980 550"

*784

631

568

694

726

618

613

680

766

838

18,734

624

37,160

May

608

514

478

464

55TT

716

935

*1,080

1,000

925

906

970

1,000

*955

816

906

1,180

1,020

980

1,040

1,100

1,180

1,180

*1,200

1,240

1,240

1,280

1,350

1,410

1,440 

1,420

31,083

1,003

61,650

June

1,310

1,330

1,270

1,020

835

705

644

596

556

536

556

536

532

556

580

600

644

684

696

668

644

616

576

536

*488

456

428

392

370

558

19,698

657

39,070

July

310 SOT

282

261

240

214

193

181

170

*152

134

129

126

121

112

104

100

95

93

95

100

100

98

93

93

95

95

102

95

93 33"

4,472

144

8,870

Aug.

*93

98

98

100 ~98

95

98

95

95

91

91

91

91

89

89

87

84

84

82

82

80

78

74

74

58

52

50

50

56

33 

3T

2,450

79.0

4,860

Sept.

36

3T

34

34

*34

34

34

55

53

35

55

54

24

19

IT

21

21

21

22

21

22

22

22

25

23

2E

23

Zl

24-

25

803

26.8

1,59C

Calendar year 1950: Max 2,250 Mln 15 Mean 273 Ae-ft 197,300

Water year 1950-51: Max 1,440 Mln 19 Mean 232 Ac-ft 167,900

Peak discharge (base, 1,500 cfs).-^May 31 (4 a.m.) 1,460 cfs (5.70 ft). 

* Discharge measurement made on this day.

weather records, and records for nearby stations.

5-11, Apr. 5-S . 

arge relation afscharge measurements,
GREEN RIVER BASIN 187

Blacks Pork near Green River, Wyo.

Location. Lat 41°23', long. 109°37', in sec. 8, T. 1~6 N. , R. 108 W. , on left bank 200 ft 

downstream from Dry Creek, 14.3 miles (revised) upstream from mouth,and 12.5 miles southwest of Green River.

Drainage area. 3,670 sq mi.

Records available. August 1947 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,000 ft (from river-profile map).

Extremes. Maximum discharge during year, 3,390 cfs Jme 3 (gage height, 6.54 ft); minimum 

daily, 21 cfs Sept. 27-30.

1947-51: Maximum discharge, 4,290 cfs Mar. 26, 1948 (gage height, 6.93 ft); maximum 

gage height, 13.66 ft Feb. 28, 1950 (ice jam), from floodmarks; no flow Sept. 25, Oct. 

27, Nov. 5, 10, 11, 1948.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wTTTch are poor. Water rights totaling 1,515.586 cfs (priorities 1862 to 1940), for irrigation of about 114,300 acres, adjudicated by Wyoming for diversion above station. 

One reservoir for Kemmerer water supply (capacity, 1,058 acre-ft) and seventeen smaller 

reservoirs for irrigation, recreation, and railroad use (total adjudication, 2,344.855 

acre-ft) above station. Records of chemical analyses and water temperatures for the 

water year 1951 are given in Water-Supply Paper 1200.

Rating tables, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method, used July 31 to Aug. 5)

Oct. 1 to Mar. 23

2.2 38

2.3 56

2.5 106

2.7 162

Mar. 24 to Sept. 30

2.0 

2.2 

2.5

3.0

13

37

76

152

305

4.0 

5.0 

6.0 

6.4

510'

820

1,680

2,750

3,220

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac- ft

Oct.

73

68

66

70

73

73

70

70

*73

74

76

79

80

50

80

79

76

72

68

68

68

68

*70

68

58

54

52

36

54

54 

61

2,131

68.7

4,230

Nov.

63

68

70

75

78

78

*78

75

45

34

50

70

94

88

120

120" 156

120

114

*100

> 98

-

2,676

89. H

5,310

Dec.

(*)

(*)

110

3,410

110

6,760

Jan.

(*)

(*)

62

(»)

1,922

62

3,810

Feb.

)

105

(*>.

J

-

2,940

105

5,830

Mar.

130

126

T5~0~ 120

120

122

*128

151

128

146

178

178

160

150

148

154

185

240

232

230

270

*340

290

400

600

785

1,040

1.270

1,090

715 

590

10,536

340

20,900

Apr.

626 *m

778

940

1,12O

1,180

1,140

1,060

956

1,110

956

1,030

964

844

876

* ,020

,110

,110

,040

,100

,140

,180

,120

924

792

836

980

820

792

806

29,121

971

57,760

May

*924

1,060

900

729

632

572 572-

694

980

1,130

1,180

1,170

1,060

1,110

1,190

1,450

*1,350

1,250

1,210

1,360

1,760

1,760

1,830

1,790

2,020

2,000

2,180

2,490

*2,910

3,170 

3,150

45 , 583

1,470

90,410

June

3,090

*3,220

3', 120

2,510

2,120

1,920

1,530

1,230

1,060

972

876

876

860

792

*757

715

743

876

,210

,370

,350

,270

,270

,170

972

820

715

680

620

560

39,274

1,309

77,900

July

520

505

470

428

380

*360

316

284

249

231

207

180

160

152

144

134

123

121

116

T3T

180

147

195

*294

274

219

166

166

288

708 510"

8,388

271

16,640

Aug.

412

302

*267

821

56T

680

505

400

319

291

255

231

201

174

149

129

113

105

103

105

103

105

118

189

131

131

*131

113

1OO

93

88_

7,430

240

14,740

Sept.

98

255

TOT

149

121

*100

88

74

63

54

47

42

36

33

33

32

32

32

32

28

as

25

25

25

24

22

21

2T

21

21

1,786

59.5

3,540

Calendar year 1950: Max 3,730 Mln 4.7 Mean 608 Ac-ft 439,800

Water year 1950-51: Max 3,320 Mln 21 Mean 425 Ac-ft 307,800

Peak discharge (base, 2,200 cfs) . June 3 (1:30 a.m.) 3,390 cfs (6.54 ft).

Note. Stage-discharge relation affected by ice Nov. 10-15, Nov. 20 to Mar. 6, Mar. 10-14, 17-25.

No gage-height record Oct. 10-22; discharge estimated on basis of recorded range in stage, weather
GREEN RIVER BASIN

Green River near Linwood, Utah

Location. Lat 40°58', long. 109°35', in SWij- sec. 29, T. 3 N., R. 21 E., on right bank a 

quarter of a mile upstream from Henrys Fork, 2 miles south of Wyoming-Utah State line, 

and 5 miles southeast of Linwood.

Drainage area.--14,300 sq mi, approximately. 

Records available. October 1928 to September 1951.

Gage.--Water-stage recorder. Datum, of gage is 5,844.64 ft above mean sea level (Bureau of 

Reclamation benchmark). Prior to Oct. 17, 1930, at site three-quarters of a mile upstream at different datum. Oct. 17, 1930, to Oct. 22, 1933, at present site at datum 

0.77 ft higher.

Average discharge. 23 years, 1,952 efs.

Extremes.--Maximum discharge during year, 16,700 cfs June 3 (gage height, 11.12 ft); minimum daily, 480 cfs Jan. 7.

1928-51: Maximum discharge, 17,100 efs June 13, 1947 (gage height, 10.39 ft); maximum gage height, 13.47 ft Mar. 1, 1950 (backwater from ice); minimum discharge recorded, 196 cfs Nov. 27, 1934 (gage height, -0.10 ft).

Remarks. Records good except those for periods of ice effect, which are fair. Natural 

flow of stream affected by transmountain diversions, storage reservoirs, power developments, diversions for irrigation, and return flow from irrigated areas.

Rating table, water year 1950-51, except periods of Ice effect (gage

height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used Mar. 15-27, Sept. 6-30)

1.2 

2.0 '3.0

460

940

1,840

5.0

10.0

11.1

4,740

14,300

16,700

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

1,170

1,170

1,190

1,210

1,200

1,170

1,160

1,130

1,140

*1,150

1,150

1,150 

1,140

1,130

1,130

1,3,20

1,120

1,120

1 1£LO

1,1'gO

1,120

1,110 

1,100

 1,090

1,080

1,080

1,070

1,100

1,120

1,160

1,190

35,210

1,136

69,840

Nov.

,200

,200

,220

,200

,200

,200

,200

* ,180

,160

,150

900

700 

,20TS

,350

,400

,500

,300

,200

,500

* ,450

,380

" TsTo"

,460

,460

,420

,350

,310

,270

,240

-

3 ,320

 ,277

7 ,010

Dec.

1,290

1,220

1,210

1,130

964

700

750

840

960

1,060

*1,100

1,020 

*930

860

980

950

910

860

840

880

880

860 

820

840

860

800

740

700

680

7TC

720

28,064

905

55,660

Jan.

660

620

600

630

560

500

480

510

540

560

580 

610

630

680

660

640

700

720

7TO

640

600 

660

*700

690

680

660

640

600

590

560

19,100

616

37,880

Feb.

560

640

680

700

*720

780

830

900

1,000

1,100

1,200

1,150 

1,100

1,020

1,030

1,100

1,160

1,200

1,100

1,040

1,080

1,060 

1,010

*980

960

940

900

880

_

_

-

26,820

958

53,200

Mar.

860

88T7

860

940

960

860

880

940

 1,000

920

920

960 

1,050

1,140

1,200

1,160

1,120

1,120

1,330

1,140

1,240

*1,680 

2,240

2,420

2,530

2,330

2,480

2,640

2,800

2,570

2,430

45,600

1,471

90,450

Apr.

2 340

*2'340

2,430

2,630

3,100

3,550

3,500

3,550

3,520

3,360

3,380

3,380 

3,240

2,980

2,920

3,310

*3,760

3,760

3,700

3,890

4,320

4,480 

4737<J

4,050

3,620

3,740

4,050

4,000

3,870

3,740

-

104,880

3,496

208,000

May

4,080

*4,620

4,320

3,730

3,390

3,160

3,130

3,600

4,270

4,740

4,690

4,770 

4,860

5,080

5,740

*5,880

5,680

5,450

5,440

5,540

6,300

7,000 

7,640

8,140

8,580

8,960

9,760

10,900

12,100

13,300

15,100

199,950

6,450

396,600

June

*16,300

16,500

16,600

16,000

14,000

11,800

9,760

8,160

7,050

6,320

5,860

5,520 

5,540

*5,590

5,980

6,560

7,500

8,640

10,100

11,800

12,800

13,100 

12,900

12,300

11,300

10,100

8,900

8,100

7,450

7,070

-

299,600

9,987

594,200

July

7,010

7,070

Q } ggo

6,780

*6,490

6,290

6,320

6,410

6,460

6,360

6,250

6,100 

6,100

6,340

6,000

5,370

4,940

4,720

4,600

4,660

4,860

5,100 

5,930

*6,270

6,150

5,680

5,080

4,720

4,880

5,340

5,270

180,510

5,823

358,000

Aug.

5,340

5,000

*4,940

5,160

5,860

5,710

5,930

5,520

5,130

4,820

4,550

4,340 

4,030

3,700

3,420

3,220

3,040

2,920

2,770

2,640

2,480

2,350 

2,330

2,340

2,360

2,420

*2,400

2,350

2,230

2,110

2,050

113,460

3,660

225,000

Sept.

2,080

2,190

2,560

2738T

2,260

*2,170

2,070

1,970

1,880

1,830

1,770

1,660

1,590

1,540

1,510

1,480

1,460

1,43C

1,39C

1,350

1,310

1,280 

1,240

1,200

1,230

1,250

1,240

1,240

1,230

1,220

-

49,010

1,634

97,210

Calendar year 1950: Max 14,100 Mln 390 Mean 3,456 Ac-ft 2,502,000

Water year 1950-51: Max 16,600 Mln 480 Mean 3,125 Ac-ft 2,262,000

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 11-20, Dec. 6 to Mar
GREEN RIVER BASIN 189

Henrys Fork near Lonetree, Wyo.

Location. Lat 41°00', long. 110°17<, in SE^ sec. 20, T. 12 N., R. 114 W., on right bank

 at Utah-Wyoming State line, half a mile downstream from West Fork,and 8 miles southwest 

of Lonetree.

Drainage area.--55.2 sq mi.

Records available . April 1943 to September 1951 (no winter records 1944, 1945).

Gage.--Water-stage recorder. Altitude of gage is not determined.

Average discharge.--6 years (1945-51), 38.9 cfs.

Extremes. Maximum discharge during year, 629 cfs May 27 (gage height, 3.30 ft), from 

rating curve extended above 300 cfs; minimum not determined.

1943-51: Maximum discharge, 822 cfs June 26, 1944 (gage height, 3.78 ft), from 

rating curve extended above 200 cfs; minimum not determined.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 wnicn are poor. One diversion in Utah above station for irrigation cf land below

Rating table, water year 1950-51, except period of ice effect

(gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method used May 29 to June 2)

1.2 4.5

1.3 6.8

1.4 12

1.7 36

1.9 

2.1

3.0

120

485

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

9.6

8.5

9.6

9.6

8.5

9.1

9.1

11

TO

10

9.6

*9.1

9.1

8.5

8.5

8.5

8.5

7.4

7.4

6.8

6.8

6.6 6TB"

6.8

6.8

6.6

6.8

6.8

10

9.1

8.5

259.8

8.38

515

Nov.

6.3

9.1

7.9

8.5

7.4

7.9

7.4

9.1

(*)

^ 7.2

-

220.0

7.33

436

Dec.

(*)

6.4

198.4

6.4

394

Jan.

0

5.8

179.8

5.8

357

Feb.

5.6

_

_

-

156.8

5.6

311

Mar.

(*)

5.4

167.4

5.4

332

Apr.

5.6

577

*5.9

6.3

6.8

6.8

7.4

7.4

7.4

8.5

9.T

9.6

9.6

9.6

9.6

9.6

10

10

11

11

11

11

11

11

11

11

10

14

18

TS

-

287.9

9.60

571

May

13

11 *TT

16

23

31

33

28

29

25

31

37

33

32

31

29

28

35

39

59

98

92

109

117

141

211

315

436 400"

418

*335

3,246

105

6,440

June

255

175

167

141

TBT

152

141 T4"?

152

159

144

148

159

*215

215

267

299

23S

223

203

167

144

141 TJ4"

148

163

155

159

155

148

-

5,294

176

10,500

July

148

TJ4

141

134

127

106

103

98

*87

82

78

73

66

63

59

57

68

66

63

70

109

100

70

63

57

49

47

46

49

50

ii

2,517

81.2

4,990

Aug.

46

*50

87

112 "55"

70

61

54

47

42

37

33

35

32

31

29

27

27

29

32

35

42

33

33

29

27

24

 53 22

26

25

1,285

41.5

2,550

Sept.

26~U

22

21

19

18

16

16

16

15

14

13

13

13

13

12

12

12

11

11

11

11

11

9.6

9.6

9.6

 3TT 9.1

9.6

9.6

-

416.2

13.9

826

Calendar year 195O: Max 410 Min - Mean 39.0 Ac-ft 28,210

Water year 1950-51: Max 436 Mln - Mean 39.0 Ac-ft 28,220

Peak discharge (base, 3OO cfs). --May 27 (10:30 p.m.) 629 cfs (3.3O ft); June 17 (5 a.m.) 351 cfs

(2.69 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 9 to Jan. 3O. No gage-height record Jan. 31

to Apr. 2 (stage-discharge relation affected by Ice during most of period); discharge estimated on

basis of 1 discharge measurement, weather records, and records for nearby stations.
190 GREEN RIVER BASIN

Middle Fork Beaver Creek near Lonetree, Wyo.

Location.--Lat 40°57 I , long. 110°11', in SW-j sec. 31, T. 3 N., R. 16 E. Salt Lake meridlan, on left bank 500 ft north of forest boundary, 1 mile southwest of Hole-in-theRock ranger station,and 1\ miles south of Lonetree.

Records available. October 1948 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,600 ft (from topographic map).

Extremes.--Maximum discharge during year, 387 cfs May 27 (gage height, 3.19 ft); minimum 

not determined, probably occurred during period of ice effect or no gage-height record.

1948-51: Maximum discharge, 523 cfs June 18, 1949 (gage height, 3.57 ft), from 

rating curve extended above 162 cfs on basis of slope^area determination of peak flow; 

minimum not determined, probably occurred during period of ice effect or no gageheight record.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversions above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 4 

Q.I 5.0

1.0 

1.2 

1.5

May 5 to Sept. 30

7.0 2.0 99

2.5 190

3.0 325 '43

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

8.1

7.9

7.9

7.7

7.5

7.3

7.1

7.3

7.3

7.1

6.9

6.9

6.7

6.5

6.7

6.5

6.4

6.2

6.4

6.2

6.2

6.2

6.2

*6.2

6.4

6.0

5.9

b5.8

b5.7

b5.6

b5.5

206.3

6.65

409

Nov.

5.3

5.4

5.3

5.8

6.0

5.9

5.8

5.6

b5.4

b5.2

b5.0

> 5.0

(*1

 4 .5

-

152.7

5.09

303

Dec.

> 4.5

(*)

4.0

133.5

4.31

265

Jan.

> 4.0

. 3.5

(*)

116.0

3.74

230

Feb.

3.5

-

_

-

98.0

3.5

194

Mar.

(*)

4.0

124:0

4.0

246

Apr.

5.0

(*)

> 6.0

-

165.0

5.50

327

Calendar year I95o: Max 189 Mln - Mean 19.6

May

6.0

6.5

7.0

8.0

9.1

11

*12

12

10

10

13

17

14

13

12

11

11

14

17

29

42

41

52

65

92

147

214

216

TBT

144

121

1,533.6

49.5

3,040

June

88

69

55

55

*53

54

53

56

55

55

55

55

65

93

106

126

I2T

102

92

*84

85

68

62

54

56

57

57

55

52

48

2,086

69.5

4,140

July

44

41

40

36

34

30

29

27

25

24

24

23

21

20

±1

19

27

27

21

22

35

38

21

*21

23

21

21

22

24

21

20

820

26.5

1,630

Aug.

21

24

33

41

35

31

27

23

21

19

18

16

15

14

14

13

13

14

16

23

*24

26

22

23

19

17

16

15

17

20

19

649

20.9

1,290

Sept.

18

16

16

15

14

13

12

11

11

11

10

9.9

10

9.9

9.6

9.6

9.4

9.4

9.1

8.9

8.7

8.7

8.5

its'

8.3

*8.3

8.3

8.3

8.3

316.8

10.6

628

Ac-ft 14,210

Water year 1950-51: Max 216 Mln - Mean 17.5 Ac-ft 12,7OO

Discharge measurement made on this day

b Stage-discharge relation affected by ice. 

Note.--No gage-height record Nov. 12 to May 4; Sept. 25, 26, 30; discharge interpolated or estimated on basis of 5 discharge measurements, weather records, and records for other stations on nearby
GREEN RIVER BASIN 

East Pork Beaver Creek near Lonetree, Wyo.

191

Location. Lat 40°57', long. 110°10', in NEij sec. 6, T. 2 N., R. 16 E. Salt Lake meridian, 

on right bank at forest boundary, 1 mile south of Hole-in-the-Rook ranger station,and 

"\ miles south of Lonetree. Prior to Oct. 11, 1950, at site'50 ft upstream at different datum.

Records available.--October 1948 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,600 ft (from topographic map).

Extremes.--Maximum daily discharge during year, 58 cfs July 16; minimum daily, 2.9 cfs,

1948-51: Maximum daily discharge, that of July 16, 1951; minimum daily, 2.4 cfs, 

Mar. 30, 1950.

Remarks.--Records good below 15 cfs and fair above. No diversions above station. Flow 

partly regulated by Hoop Lake (capacity unknown), which receives water from Thompson 

Creek, a tributary to Burnt Fork.

Rating tables, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 4-29)

Oct. 11 to Sept. 30

1.1 2.3

1.2 3.6

1.3 5.5

0.8 2.5

.9 3.0

1.0 4.2

1.1 6.6

1.2 11

1.3 18

1.5 38

1.7 63

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

4.0

4.0

3.8

3.6

3.5

3.3

3.1

3.1

3.1

*3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

*3.0

2.9

2.9

2.9

2.9 

2.9

3.0

3.0

98.2

3.17

195

Nov.

3.1

3.1

3.1

3.1

3.1

3.2

572

3.2

3.1

3.0

3.1

3.2

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.2

3.2

3.2

3.2

3.2

3.2

*3.2

3.1 

3.1

3.1

-

94.0

3.13

186

Dec.

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.5

3.4

3.4

*3.4

3.5

3.5

3.5

3.5

3.5

3.5

3.4

3.4

3.5 

3.5

3.5

3.5

104.9

3.38

208

Jan.

3.5

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

3.5

3.5

3.5

3.5

3.6

3.6

3.6

3.7

*3.7

3.7

3.7

3.7

3.9

3.9 3 9

3.9

3.9

111.5

3.60

221

Feb.

3.7

3.7

3.6

576

3.7

3.7

3.7

3.9

4.0

4.0

4.0

4.0

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

I

-

108.4

3.87

215

Mar.

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

*3.7

3.6

3.6

3.6

3.7

3.7

3.6

3.6

3.6

3.5

3.6

3.6

3.6

3.6

3.9

579

3.9

3.9 

3.9

3.9

114.7

3.70

228

Apr.

3.9

579

4.0

4.2

4.2

4.2

4.0

4.0

*4.2

4.2

4.0

4.0

4.6

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.4

5.4

5.4

5.2

5.4

5.4

5 4

sii

-

141.4

4.71

280

May

5.2

5.2

5.2

5.4

6.0

6.6

*7.0

7.3

7.7

8.6

8.6

9.0

9.0

9.0

9.0

8.6

7.7

7.7

8.6

9.5

14

18

18

18

16

15

15

14

14 

12

12

316.9

10.2

629

June

12

11

11

11

*11

10

10

9.5

9.5

10

10

9.5

10

9.5

9.5

9.0

9.0

8.6

8.2

*8.2

7.7

7.7

7.3

7.0

6.6

6.3

6.3

6,0 

5.7

577

-

262.8

8.76

521

July

5.7

5.4

11

21

20

20

20

21

20

19

19

19

19

37

53

58

55

54

53

47

39

19

4.8

*4.6

4.6

^.6

4.6

4.6

4.4

4.4

676,3

21.8

1,341

Aug.

4.6

4.6

4.8

478

4.8

4.8

4.6

4.6

4.4

4.4

4.2

4.2

4.0

4.0

4.2

4.2

4.2

4.2

4.2

4.6

*4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.2

4.2

136.4

4.40

271

Sept.

172" 4.2

4.0

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

3.9

3.7

3.7

3.7

*3.7

3.7

3.7

-

116.7

3.89

231

Calendar year 1950 : Max 47 Min 2.4 Mean 8.50 Ac -ft 6,190

Water year 1950-51 : Max 58 Mln 2.9 Mean 6.25 Ac-ft 4,530

Discharge measurement made on this day.
192 GREEN RIVER BASIN

West Fork Beaver Creek near Lonetree, Wyo.

Location.--Lat 40°57', long. 110°13', in SWi sec. 35, T. 3 N., R. 15 E. Salt Lake meridian,

 on right bank at forest boundary, an eighth of a mile above confluence with Fellow Creek, 

and ?! miles southwest of Lonetree.

Records available. October 1948 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,700 ft (from topographic map).

Extremes.--Maximum discharge during year, 145 cfs June 17 (gage height, 2.43 ft); minimum

 not determined, probably occurred during period of ice effect or no gage-height record.

1948-51: Maximum discharge, 289 cfs June 18, 1949 (gage height, 3.13 ft); minimum 

not determined, probably occurred during period of ice effect or no gage-height record.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 which are fair. Station is above diversions. No regulation of flow.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 19 to July 2)

0.9 2.2

1.0 4.3

1.2 10

1.5 24

2.0 66

2.5 143

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

4.8

4.6

5.6

5.1

4.8

4.8

4.3

4.8

4.6

4.3

4.3

4.6

4.3

4.3

4.1

4.1

3.6

3.4

3.4

Nov.

, 3.5

3.4 1

3.4

3.4

3.4H

*3.4

3.4

5.0

3 .5

124.7

4.02

247

I"

*3.4

3.2

3.2

3.2

-

104.0

3.47

206

Dec.

3.6

3.4

3.4

3.6

3.8

3.6

3.6

3.6

3.6

3.6

3.4

3.4

3.4

3.2

3.2

3.2

3.4

3,2

*3.2

3.0

101.4

3.27

201

Jan.

» 3.0

> 2.5

( *)

85.0

2.74

169

Feb.

2.5

-

-

-

70.0

2.5

139

Mar.

(*)

2.5

77.5

2.5

154

Apr.

2.5

*2.8

3.2

4.3

4.3

5.6

4.8

4.1

5.3

4.8

4.3

5.6

5.6

5.6

6.4

4.3

4.8

7.2

5.6

5.3

-

121.4

4.05

241

May

5.3

6.1

6.9

7.9

11

12

*12

11

9.5

9.1

12

15

12

11

9.5

9.1

8.5

11

12

19

24

21

24

27

34

54

83

108

96

86

74

840.9

27.1

1,670

June

60

44

34

36

*37

35

33

33

35

36

31

29

38

61

73

102

116

100

92

*90

80

62

55

51

59

66

70

70

68

61

-

1,757

58.6

3,480

July

55

58

56

53

48

43

40

39

36

35

35

33

30

29

28

30

45

40

34

36

56

48

34

*32

30

29

28

28

29

29

2T_

1,173

37.8

2,330

Aug.

29

31

41

47

38

35

30

28

25

24

21

19

17

21

15

14

14

14

15

27

*21

20

17

16

14

13

12

12

14

14

13

671

21.6

1,330

Sept.

13

12

12

12

11

9.8

9.8

9.1

9.1

8.8

8.2

8.5

8.5

8.2

8.2

7.9

7.9

7.9

7.9

7.2

6.9

7.2

7.2

6.9

6.6

6.4

*6.1

6.6

7.2

7.2

-

Z55.3

8.51

506

Calendar year 1950: Max 90 Mln - Mean 14.2 Ac-ft lo,240

Water year 1950-51: Max 116 Mln - Mean 14.7 Ac-ft lo,670
GREEN RIVER BASIN 193

Henrys Fork near Burntfork, Wyo.

Location.--Lat 41*02', long 110°03' , in sec. 4, T. 12 N. , R. 112 W., on left bank at UintaSweeTwater county line, 2-5 miles upstream from Burnt Fork,and 2f miles west of Burntfork 

School.

Drainage area. 242 sq mi.

Records available. October 1943 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is not determined. Prior to Dec 22, 1948, 

at site 400 ft upstream at different datum.

Average d'scharge.--8 years, 67.1 cfs.

Extremes.--Maximum discharge during year, 751 cfs June 1 (gage height, 3.53 ft); minimum 

daily, 12 cfs Nov. 10.

1943-51: Maximum discharge, 1,190 cfs June 19, 1949 (gage height, 4.38 ft), from 

rating curve extended above 530 sfs; minimum daily, 3.5 cfs Sept. 16, 1948.

Renarks. Records good except those for periods of ice effect or no gage-height record, 

wfTTch are poor. Water rights for about 73 c-fs (priorities 1875 to 1939) for irrigation 

of about 5,100 acres adjudicated by Wyoming for diversion above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, In feet, and discharge. In cubic feet per second)

(Shifting-control method used Nov. 17-27,

29, 30, Dec. 1, 7-12, 20)

Oct. 1 to De

1.6

1.7

31 Jan. 1 to Sept. 30

1.9

2.0 52

1.7 22

1.8 36

2.1 96

2.6 230

3.0 410

3.5 730

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

19

21

2T

20

19

19

19

19

20

*19

19

19

19

19

16

15

T5

15

15

19

19

19

17

17

19

18

18

19

19

19

16

567

18.3

1,120

Nov.

16

18

19

19

19

19

18

*18

16

12

16

19

25

24

20

17

25

26

28

26

39

33

28

26

29

28

26

25

24

24

-

682

22.7

1.350

Dec.

26

17

24

41

37

34

38

39

33

30

33

*34

33

29

34

36

31

26

30

33

25

25

26

27

28

25

25

26

26

26

23

920

29.7

1,820

Jan.

20

22

22

23

25

18

17

17 *17

17

18

17

18

19

20

20

18

19

18

16

15

TT

20

19

22

21

20

18

16

17

16

577

18.6

1,140

Feb.

18

T5

22

21

22

*23

23

24

25

26

24

24

22

22

21

22

23

24

24

22

23

26

28

25

23

26

26

24

_

_

-

655

23.4

1,300

Mar.

23

29

24

27

30

22

*22

26

29

26

23

21

19

22

28

25

21

20

25

34

37

36

31

32

36

31

27

24

25

26

29

830

26.8

1,650

Apr.

23

32

*49

45

30

28

28

26

28

28

23

26

29

26

26

28

29

29

29

28

26

28

26

28

29

28

28

26

29

29

-

867

28.9

1,720

May

23

21

*18

T5

22

26

29

29

29

28

28

28

26

23

26

29

*26

22

22

28

78

96

128

118

108

138

244

464

654

SZT

506

3,657

118

7,250

June

614

*43*

281

215

183

167

175

156

151

178

209

162

156

197

227

297

410

452

289

237

237

244

156

130

143

164

143

138

128

120

-

6,793

226

13,470

July

113

98

89

89

83

74

68

56

*50

38

35

35

36

32

30

33

40

47

49

74

143

1315

87

54

47

43

47

74

115

141

72

2,122

68.5

4,210

Aug.

62

*96

180

209

T75

167

130

118

85

62

50

38

38

38

35

30

28

29

33

52

76

68

68

60

40

41

40

35

35

43

41

2,205

71.1

4,370

Sept.

62

5(3

41

45

43

41

35

29

28

29

29

28

28

28

28

28

26

22

21

22

21

23

25

22

18

16

16

18

15

T5

-

852

28.4

1,690

Calendar year 1950 : Max 452 Mln .7.6 Mean 52.6 Ac-ft 38,070

Water year 1950-51 : Max 654 Mln 12 Mean 56.8 Ac-ft 41,090

Peak discharge (base, 540 cfs) . June 1 (5 p.m.) 751 cfs (3.53 ft); June 18 (l p.m.) 543 cfs (3.22 

ft); July 29 (6:30 p.m.) 452 cfs (3.07 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov 10, 11, 15, 16, 28, Dec. 2-6, 13-19, Dec. 21 to 

Jan. 31, Feb. 6-21, 24, 25, 28, Mar. 1-4, 10-12, 16. No gage-height record Feb. 1-5, Mar. 17-29 

(stage-discharge relation affected by Ice during part of periods), Sept. 29, 30; discharge estimated 

on basis of weather records, recorded range In stage, and records for nearby stations.
GREEN RIVER BASIN

Burnt Fork near Burntfork, Wyo.

Location.--Lat 40°57', long. 110°04', in SWij sec. 31, T. 3 N., R. 17 E., in Utah on right 

DanK naif a mile west of Ashley National Forest boundary and 7 miles southwest of Burntfork.

Drainage area.--52.8 sq mi.

Records available.--April 1943 to September 1951 (no winter records prior to 1946).

Gage.--Water-stage recorder. Altitude of gage is not determined.

Average discharge. 6 years (1945-51), 30.2 cfs.

Extremes.--Maximum discharge during year, 201 cfs May 27 (gage height, 6.39 ft); maximum 

gage neight, 6.43 ft June 17; minimum not determined, occurred during period of no gageheight record.

1943-51: Maximum discharge, 740 cfs June 26, 1944, from rating curve extended above 

200 cfs; maximum gage height, 8.07 ft June 20, 1949; minimum not determined, occurred 

during period of no gage-height record.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. No diversion or regulation.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 5-26)

4.3 3.0

4.4 4.0

4.5 6.0

4.6 9.0

4.9 

5.5 

6.0 

6,5

128

206

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

17 14"

14

12

11

11

9.4

9.0

9.0

9.8

*11

11

11

11

9.4

7.2

6.0

5.2

5.0

5.0

5.0

4.8

4.6

T7S

5.0

4.8

4.8

5.0

5.4

5.2

4.8

252.2

8.14

500

Nov.

4.8

4.8

4.0

4.8

4.6

4.8

4.8

5.0

*4.2

5.6

b4.5

b6.0

b8.0

bTTK

6.9

7.5

7.8

7.2

6.9

6.3

6.3

5.8

5.6

5.. 6

5.8

5.6

5.6

5.4

6.0

5.4

-

171.1

5.70

339

Dec.

5.5

170.5

5.5

338

Jan.

5.0

155.0

5.0

307

Feb.

5.0

_

_

-

140.0

5.0

278

Mar.

5.5

170.5

5.5

338

Apr.

(*)

6.5

(*)

-

195.0

6.5

387

May

7.5

*5.6

5.2

4.8

S^

13

17

13

10

10

17

23

20

16

14

13

*14

23

32

46

48

50

58

69

88

114

142

150

I4T

125

*109

1,406.5

45.4

2,790

June

95

75

64

59

59

57

TO

57

57

66

77

76

84

115

*131

1^3

158

T3Z

119

109

108

101

96

92

119

115

109

107

103

96

-

2,849

95.0

5,650

July

89

SB" 90

81

75

68

60

56

*53

53

59

56

53

52

51

53

56

53

52

53

61

57

50

49

53

49

48

46

15

49

49

1,808

58.3

3,590

Aug.

50 *60

83

95

75

76

68

64

60

57

53

49

47

45

43

41

41

38

36

50

52

58

60

45

37

33

28

30- 27

32

32

1,568

50.6

3,110

Sept.

31

2iT

213

25

24

22

21

20

19

18

17

17

16

16

16

15

16

15

14

13

13

14

14

14

13

12

12

11

TT

11

-

514

17.1

1,020

Calendar year 1950: Max 205 Min - Mean 28.4 Ac-ft 20,570

Water year-_i950-51 : Max 158 Min . Mean 25.8 Ac-ft 18,650

Peak discharge (base, 100 cfs). --May 27 (6 p.m.) 201 cfs (6.39 ft); June 17 (12:30 a.m.) 195 cfs

(6.43 ftj; June 26 (1 a.m.) 1Z8 cfs (6.00 ft).

* * Discharge Discharge measurement measurement made made on on this this day. day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 1 to Apr. 30 (stage-discharge relation'affected by ice during

>st of period), Aug. 21 to Sept. 30; discharge estimated on basis of 6 discharge measurements, w

1 records, recorded ranee in staee. and records for nearbv stations.

mum. LH inu-±-juj, Hug. £j. 10 aept. au; aiscnarge estimated on oasis o 

er records, recorded range in stage, and records for nearby stations
GREEN RIVER BASIN 195

Henrys Fork at Linwood, Utah

Location.--Lat 41°00', long. 109°39', in sec. 23, T. 12 N., R. 109 W., on right bank 220 ft 

upstream from highway bridge, 300 ft north of Wyoming-Utah State line at Linwo&d.

Drainage area. 531 sq mi.

Records available.--October 1928 to September 1951.

Gage.--Water-stage recorder at present site since Dec. 14, 1948. Datum of gage is 5,995.24 

ft above mean sea level, adjustment of 1912. Oct. 10, 1928 to Aug. 3, 1936, staff gage 

at bridse 220 ft downstream at datum 2.67 ft lower, and Aug. 22, 1936 to May 7, 1937, at 

datum 1.67 ft lower. May 8, 1937 to Aug. 5, 1938, chain gage, and Aug. 6, 1938 to Aug.

23. 1944, water-stage recorder at bridge 220 ft downstream at datum 2.67 ft lower. Aug

24. 1944, to Dec.13, 1948, staff gage at site 100 ft upstream at present datum.

Extremes. Maximum discharge during year, 576 cfs June 2 (gage height, 3.21 ft); minimum daiiy, 4.4 cfs July 17.

1928-51: Maximum discharge, 6,750 cfs Aug. 3, 19S6 (gage height, 7.19 ft, from floodmarks, site and datum then in use), from rating curve extended above 570 cfs on basis of 

slope-area determination of peak flow; no flow for several days in 1934, 1935, 193a, 1940.

Remarks. --Records fair. Water rights totaling 260.867 cfs (priorities 1875 to 1939) for irrigation of about 19,220 acres adjudicated by Wyomine for diversion above station. Ore 

small reservoir (capacity 80 acre-ft ) used for irrigation above station. Records of chemical analyses and water temperatures for the water year 1951 are given in Water-Supcly 

Paper 1200. '

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, In cutic feet per second)

(SMf ting-control method used Mar. 28 to Apr. 2, Aug. 21 to Sept. 19)

0.7 

.8

1.2 

1.5

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

1Q

11

12

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

33

36

34

34

29

29

35

38

39

38

38

38

38

39

38

38

35

35

39

44

45- 46

»39

38

39

38

39

40

40

36

1,156

37.3

2,290

Nov.

36

36

34

36

39

39

*38

35

36

11

29

46

45

50

40

27

56

53

60

59

65

8156"

44

49

53

50

49

41

49

1,350

45.0

2,680

Dec.

46

25

4T

52

50

44

65

60

59

62

*68

58

44

50

56

44

36

45

50

35

35

40

42

44

36

42

42

43

44

39

1,463

47.2

2,900

Jan.

36

32

36

39

37

34

33

33

34

*35

36

35

37

38

40

40

38

36

38

34

31

32

36

*38

38

36

32

30

29

29

1,082

34.9

2,150

Feb.

33

35

44

48

*48

50

54

56

60

60

60

56

52

50

50

50

54

56

56

52

56

62

$4" 68

65

65

58

48

_

_

-

' 1,513

54.0

3,000

Mar.

58

68

59

56

62

62

*49

46

53

54

38

39

37

35

46

49

25

35

62

46

59

95

4?

49

64

79

93

82

62

86

66

1,767

57.0

3,500

Apr.

68

*62

105

~5l 115

44

42

40

42

42

38

47

46

42

41

43

*45

48

46

49

59

56

48

43

50

48

46

40

39

46

-

1,529

51.0

3,030

May

*43

34

32

28

26

26

29

34

33

32

32

29

32

30

35

*46

38

14

11

19

53

95

122

124

97

104

154

236

379

435

443

2,845

91.8

5,640

June

*459 4"BT

315

241

194

161

145

137

116

120

199

154

120

112

187

226

244

273

273

214

202

221

206

152

137

143

141

130

120

108

-

5,901

197

11,700

July

100

91

79

75

*72

59

39

33

23

13

9.6

7.7

6.5

6.2

5.3

4.8

4.4

FT5

6.8

6.8

93

161

TT5

64

29

17

13

34

110

143

81

1,510.7

48.7

3,000

Aug.

79

*95

175

228

TSS" 

137

120

99

90

104

99

82

48

24

18

12

10

9.2

7.7

BTTJ

70

95

102

100

56

26

18

12

11

11

13

2,115.9

68.3

4,200

Sept.

16

124

75

81

52

*50

48

38

28

26

24

22

22

20

19

19

19

18

18

18

17

17

18

19

18

17

16

17

13

13

-

902

30.1

1,790

Calendar year 1950: Max 740 Mln 11 Mean 73.8 Ac-ft 53,400

Water year 1950-51: Max 459 Mln 4.4 Mean 63.4 Ac-ft 45,880

Peak discharge (base, 650 cfs). No peak above base.

* Discharge measurement made on this day. _ 

Note Stage-discharge relation affected by ice Dec. 19 to Feb. 22, Mar. 13. No gage-height

rec^Fd" Oct. 8, 9, Apr. 3-16; discharge estimated on basis of weather records, recorded range In

stage, and records for nearby stations.
196 GREEN RIVER BASIN

Sheep Creek upper canal near Manila, Utah

Location.--lat 40°55', long. 109°57', in SWv sec. 18, T. 2 N., R. 18 E., on left bank 

/U rt downstream from bridge on Highway 165 and 14 miles southwest of Manila.

Records available.--September 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,700 ft (from topographic map).

Extremes.--Maximum discharge during year, 43 cfs June 4 (gage height, 2.18 ft); no flow 

at times each year.

1949-51: Maximum discharge, that of June 4, 1951; no flow at times each year.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Canal diverts water from Sheep Creek for irrigation in vicinity of 

Manila.

Rating table, water year 1950-51, except period of loe effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 22}

0.6 

.7

.9

1.0 1.5

1.1 

1.3 

1.5 

1.8 

2.2

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

2.4

2.6

274

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.2

2.2

2.1

2.2

2.1

1.5

1.1

1.1

1.1

1.0

.9

.9

*1.0

.9

.9

1.0

1.3

1.1

1.0

54.6

1.76

108

Nov.

0.9

.8

.7

.9

.9

.9

.9

.9

.9

.9

.8

.8

.8

.7

.9

1.1

1.1

1.1

1.1

.6

0

0

0

0

0

0

0

*0

0 

0-

17.7

0.59

35

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

0

0

.2

-

2.6

0.09

5.2

May

!1 '

|S. *al.O

j'

1.6

1.3

1.5

.8

.4

.4

.6

.5

.5

.9

2.9

2.4

3.2

3.1

2.4

7.6

31

39

36 

36

37

215.5

6.95

427

June

*35

32

30

33

35

32

29

26

25

28

35

32

28

30

29

31

30

28

26

27

*30

26

25

20

19

18

16

14

13 

12

-

794

26.5

1,570

July

11

9.4

8.5

8.3

7.1

6.4

6.9

6.2

6.2

5.6

5.6

5.0

6.2

8.8

7.3

6.2

9.9

14

12

12

16

13

11

11

*11

13

13

13

12 

12

12

299.6

9.66

594

Aug.

12

11

16

14

11

13

9.4

9.4

12

11

7.1

4.2

2.4

3.3

8.5

8.3

6.9

7.1

8.8

*12

13

11

11

11

7.6

5.2

3.2

2.4

2^2 

2.6

2.4

259.0

8.35

514

Sept.

2.6

2.4

2.9

2.6

2.2

1.8

1.6

1.4

1.2

1.2

1.2

1.1

1.1

1.1

1.1

1.1

1.1

1.0

l.C

1.7

4.E

4.8

4.6

4.2

4.0

*3.9

4.C

4.C

4.C 

4.0

-

73.9

2.4e

147

Calendar year 1950: Max 29 Mln 0 Mean 5.12 Ac-ft 3,710

Water year 1950-51: Max 39 Mln 0 Mean 4.70 Ac-ft 3,400

* Discharge measurement made on this day.

a No gage-height record,- discharge estimated on basis of 1 discharge measurement and records for 

Sheep Creek lower canal near Manila.

Note.--Stage-discharge relation affected by ice Apr. 18 to May 6.
GREEN RIVER BASIN 

Sheep Creek lower canal near Manila, Utah

Location.--Lat 40°54', long. 109°54', In SEi sec. 21, T. 2 N., R. 18 E., on left bank 

1 mile downstream from heading of canal and 11 miles southwest of Manila.

Records available.--September 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage Is 8,700 ft (from topographic map).

Extremes.--Maximum discharge during year, 89 cfs May 25 (gage height, 2.64 ft); no flow

 Nov. 21 to Apr. 17.

1949-51: Maximum discharge, 96 cfs June 12, 1950 (gage height, 2.79 ft); no flow 

at times each year.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 wnTch are fair. Canal diverts water from Sheep Creek for irrigation in vicinity of 

Manila.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.0

1.1

1.2

1.3

1.4

2.0 

3.0 

4.5 

6.8

i.e 2.0

2.7 90

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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.S

8.2

7.4

7.4

7.0

6.B

6.3

6.5

6.5

6.3

6.1

6.1

6.1

5.8

5.6

5.6

5.4

5.2

5.0

4.7

4.7

4.5

4.5

4.5

*4.5

4.5

4.5

b4.0

b4.5

4.7

4.5

175.0

5.65

347

Nov.

b4.4

b4.2

b3.9

b3.8

b3.9

b4.0

b4.0

bi.O

b4.0

bS.O

 b4.0

b2.0

0

0

0

0

0

0

0

*»0

0

0

-

77.2

2.57

153

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

0

0

.1

.3

.2

b.2

b.2

b.3

.3

b.3

.3

a. 3

a. 4

a. 4

a. 5

-

3.8

0.13

7.5

May

aO.5 ~

.6

.5

4.7

16

23

*22

19

21

24

37

37

30

26

24

27

39

44

56

66

66

68

75

83.

81

78

78

78

78

76

1,278.9

41.3

2,540

June

*71

61

53

53

56

50

44

45

54

59

67

66

63

67

69

70

66

73

77

76

*77

71

67

61

60

60

59

60

59

59

-

1,873

62 .4

3,720

July

56

52

51

49

47

43

41

40

37

36

35

35

43

38

38

42

47

34

29

31

37

31

26

24

*2_3

34

33

30

29

28

29

1,148

37.0

2,280

Aug.

29

35

48

60

44

42

37

37

32

31

31

31

31

28

21

19

18

19

23

*35

31

28

26

26

23

25

25

26

27

26

28

942

30.4

1,870

Sept.

27

26

2826-

23

21

20

20

20

20

19

19

18

19

18

18

18

17

17

16

14

13

12

12

12

11

11

*11

11

11

-

528

17.6

1,050

Calendar year 1950 : Max 92 Min 0 Mean 14.8 Ac-ft 10,730

Water year 1950-51: Max 83 Min 0 Mean 16.5 Ac-ft 11,970

* Discharge measurement made on this day.

** Field estimate made on this day.

a No gage-height record; discharge interpolated.

b Stage-discharge relation affected by Ice.

256684 O - 53 - 14
198 GREEN RIVER BASIN

Sheep Creek near Manila, Utah

Location.--Lat 40°53' , long. 109°54', in NEij sec. 28, T. 2 ». , R. 18 E. , on left bank 350

 ffdownstream from confluence of North and South Forks and 12 miles southwest of 

Manila.

Drainage area. 45.9 sq mi.

Records available.--October 1942 to September 1951 (no winter records 1943). 

Gage.--Water-stage recorder. Altitude of gage is 8,680 ft (from topographic map). 

Average discharge.--8 years (1943-51), 16.7 cfs.

Extremes.--Maximum discharge during year, 87 cfs May 27 (gage height, 4.29 ft); minimum

 daily, 0.2 cfs Oct. 26, Nov. 1-19.

1942-51: Maximum discharge, 1,020 cfs May 19, 1948 (gage height, 6.05 ft), from 

rating curve extended above 250 cfs; minimum daily, 0.1 cfs on many days in September 

and October 1946.

Remarks.--Records fair except those for periods of ice effect or no gage-height record,

 wnicn are poor. Transbasin diversions by Sheep Creek Canals (about 15,370 acre-ft in 

water year 1951) above station.

Rating tables, water year 1950-51, except period of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 15 Apr. 16 to Sept. 30

2.9 0.2

3.0 .8

3.1 2.6

3.2

3.3 

3.5

5.6 

9.2

19

2.9 0.4

3.0 1.1

3.1 2.2

3.2 4.5

3.3 8.0

3.5 19

4.0 60

4.5 110

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.3

.3

.3

.3

.3

.3

*.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

77

.3

.3

.3

.3

9.3

0.3O

18

Nov.

0.2

TZ

.2

.3

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

2.2

4.8

54.1

1.80

107

Dec.

(*)

3.5

108.5

3.5

215

Jan.

(*)

3.0

93.0

3.0

184

Feb.

(*)

3.5

_

_

-

98.0

3.5

194

Mar.

(*)

3.5

108.5

3.5

215

Apr.

3.8

4.0

4.2

*4.4

4.4

4.4

5.0

5.0

5.3

bS.O

b5.8

b7.0

bS.O

9.2

11

18

14

*11

12

12

13

13

14

18

15

11

12

9.0

2.3

37?

-

271.0

9.03

538

May

5.2

*12

14

15

17

10

4.1

3.4

3.0

2.7

4.1

6.6

3.0

2.3

1.9

*1.9

1.9

2.2

2.5

3.2

4.3

8.0

15

9.5

30

53

62

684"S

37

21

471.8

15.2

936

June

*8.5

2.1

1.7

1.9

1.8

1.7

1.6

1.5

1.7

1.9

5.6

4.5

3.0

5.6

8.0

22

-n23

21

15

16

6.2

3.4

1.8

1.5

1.2 TT3-

1.3

1.3

1.3

-

189.4

6.31

376

July

1.2

T7?

1.1

1.1 *1.1

1.0

1.0

1.0

1.0

1.0

1.0

.9

1.0

1.0

1.0

1.0 1.1

.9

.8

.8

1.0

.8

.8

.8

.7

.8

.8

.8

.8

.7

.8

29.0

0.94

58

Aug.

0.8

*.9

1.1

T7o~ 1.8

1.0

.8

.8

.7

.6

.6

.6

.7

.7

_J>

.5

.5

.5

.7

.9

. 8

.8

. 6

.7

.6

.5

.6

.6

.7

.7

.7

23.0

0.74

46

Sept.

0.8

.8

.8

.8

.7

*.8

.8

.8

.8

.8

.8

.3

.8

.8

.9

.9

.9

T70" 1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

-

26.8

0.89

53

Calendar year 1950: Max 140 Mln 0.2 Mean 8.50 Ac-ft 6,150

Water year 1950-51: Max 68 Mln 0.2 Mean 4.06 Ac-ft 2,940

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote. No gage-height record Nov. 9 to Apr. 3 (stage-discharge relation affected by ice during most 

of period); discharge estimated on basis of 4 discharge measurements, weather records, records of diversions above station, and records for nearby stations.
GREEN RIVER BASIN 

Sheep Creek at mouth, near Manila, Utah

199

Location. --Lat 40°55'50", long. 109°38'55", in NEir sec. 10 ( unsurveyed ) , T. 2 N., R. 20 E.

 on right bank 1 mile upstream from mouth and 6 miles southeast of Manila.

Drainage area. --Ill sq mi.

Records available. --October 1946 to September 1951.

Gage . --Water-stage recorder. Altitude of gage is 5,860 ft (from river-profile map).

Average discharge . --5 years, -28.1 cfs.

Extremes . --Maximum discharge during year, 86 cfs May 28 (gage height, 1.92 ft); minimum,

 5.3 cfs Sept. 27.

1946-51: Maximum discharge, 450 cfs May 20, 1948 (gage height, 3.49 ft), from rating 

curve extended above 230 cfs;' minimum, that of Sept. 27, 1951.

Remarks. --Records good except those for periods of ice effect or no gage-height record,

 wRTch are fair. Diversions above station for irrigation including transbasin diversions for irrigation in vicinity of Manila, via Sheep Creek canals. Some storage in 

several small mountain lakes .

Rating table, water year 1950-51, except period of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

0.9 

1.0 

1.2 

1.6

2.0

5.3 

8.7

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

li

14

14

14

14

14

13

13

13

13

13

13

12

12

12

12

12

12

12

12

12

*11

12

12

12

11

11

391

12.6

776

Nov.

11

11

11

11

11

11

11

11

10

b8.0

b9.0

blO

11

11

11

bll

11

11

12

11

13

14

14

13

14

14

14

*14

14

13

-

351.0

11.7

696

Dec.

14

b!3

b!3

14

14

b!3

b!4

14

14

14

14

13

13

13

13

13

(*)

> b!3

411

13.3

815

Jan.

bll

(*)

341

11

676

Feb.

> 9.0

> 12

_

-

-

321.0

11.5

637

Mar.

^ 11

*11

11

11

11

bll

bll

bll

11

11

11

bll

11

11

11

11

11

11

10

10

339

10.9

672

Apr.

10

10

1111

12

12

12

12

12

*14

13

13

12

16

21

28

29

24

24

30

21

18

18

25

20

22

18

20

16

18

-

522

17.4

1,040

May

18

19

16

23

26

26

21

*17

16

15

16

21

18

16

16

16

15

15

15

18

22

26

38

30

37

56

63

72

59

51

*41

858

27.7

1,700

June

37

33

36

35

34

34

37

34

27

29

30

32

26

23

24

34

42

45

*45

37

37

34

26

20

19

17

15

14

13

12

-

881

29.4

1,750

July

13

12

12

12

12

12

11

10

11

11

12

12

10

11

10

11

13

13

12

13

16

14

*12

11

11

10

11

11

11

11

18_

369

11.9

732

Aug.

20

17

23

24

1G

18

16

15

14

13

13

12

11

11

11

10

9.6

10

12

15

15

*14

13

12

12

11

10

9.1 976-

9.6

10

417.9

13.5

829

Sept.

11

11

12

11

11

9.6

9.1

8.7

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.3

8.7

8.7

7.5

7.5

7.9

7.1

7.5

6.8

6.2

6.2

*6.8

6.5

6.5

-

252^0

8.4

500

Calendar year 1950: Max 182 Mln 8.O Mean 22.4 Ac-ft 16,260

Water year 1950-51: Max 72 Mln 6.2 Mean 14.9 Ac-ft 10,820

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Feb. 1 to Mar. 12; discharge estimated on basis of weather records 

and records for stations on nearby streams.
200 GREEN RIVER BASIN 

Carter Creek near Manila, Utah

Location. Lat 40°50', long. 109°50', in NW£ sec. 7, T. IN., R. 19 E., (unsurveyed), on 

right bank 2 miles upstream from mouth of Beaver Creek, 3 miles southwest of Ute Mountain lookout tower, and 12 miles southwest of Manila.

Records available.--October 1948 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,600 ft (from topographic map).

Extremes.--Maximum discharge during year, 89 cfs May 26 (gage height, 2.29 ft); minimum 

not determined, occurred during period of no gage-height record.

1948-51: Maximum daily discharge, 130 cfs June 19, 1949; minimum not determined, 

occurred during period of no gage-height record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. No diversion or regulation above station.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used June 18-24)

0.6 1.4 1.0 8.2

.7 2.2 1.2 17

.8 3.4 1.5 35

.9 5.3 2.1 75

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.1

4.1

4.1

4.1

4.1

4.1

4.1

3.9

3.9

3.9

3,9

3.9

3.9

3.9

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.4

3.3

3.1

*3.3

3.4

3.3

3.3

3.4

2.9

2.7

113.3

3.65

225

Nov.

2.7

FT

2.7

2.7

2.7

2.7

2.7

2.7

b2.5

b2.0

b2.3

b2.5

2.6

2.6

2.6

2.6

2.7

2.7

2.6

2.6

2.6

2.6

2.5

2.4

2.5

2.5

2.5

*2.3

2.3

2.1

-

76.2

2.54

151

Dec.

2.1

2T3~ 2.3

2.1

2.0

1.9

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.1

*2.0

1.9

Ts" i.e

1.9

1.9

1.8

2.0

1.9

1.9

1.8

1.8

61.3

 1.98

122

Jan.

1.7

1.6

1.7

52.6

1.70

104

Feb.

1.5

_

_

-

42.0

1.5

83

Mar.

(«)

1.5

46.5

1.5

92

Apr.

(*)

2.5

-

75.0

2.5

149

May

2.8

2.7

2.5

279

3,3

4.0

4.0

3.8

*3.8

3.8

4.0

5.0

5.4

4.5

4.7

5.1

5.3

7.2

8.6

11

13

14

16

18

29

56

72

72

59

54

44

541.4

17.5

1,070

June

37

27

19

18

*19

18

18

14

14

16

18

21

21

26

30

40

43

39

33

34

*36

32

27

23

22

21

21

21

20

20

-

748

24.9

1,480

July

19

18

17

17

16

16

15

14

14

14

13

12

12

11

11

11

11

11

10

10

1111

10

9.4

*8.6

8.6

7.9

7.6

7.6

7.9

7.9

369.5

11.9

733

Aug.

10

13

21

28

23

20

17

16

14

14

14

13

11

10

9.8

8.6

8.6

8.2

9.4

*14

15

15

14

14

13

12

11

11

11

11

10

419.6

13.5

832

Sept.

10

11

9.8

9.8

9.8

8.6

8.2

7.9

7.2

6.9

7.2

6.3

6.3

6.6

6.3

6.3

6.3

5.8

6.3

5.5

5.5

5.5

5.5

5.5

5.5

5.3

5.3

*5.1

4.9

47?

-

205.1

6.84

407

Calendar year 1950: Max 74 Min - Mean 8.90 Ac -ft 6,440

Water year 195O-51: Max 72 Mln - Mean 7.54 Ac -ft 5,45O

Peak discharge (base. 8O ofa). May 26 (6 p.m.) 89 cfs (2.29 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Jan. 3 to May 15 (stage-discharge relation affected by ice during much 

of period); discharge estimated on basis of 3 discharge measurements, weathe.r records, and records 

for nearby stations.
GREEN RIVER BASIN 201

Carter Creek at mouth, near Manila, Utah

Location. Lat 40°53'25", long. 109°35'20", In SEtj sec. 19, T. 2 N., R. 21 E. (unsurveyed), on left bank 600 ft upstream from mouth and 10 miles southeast of Manila.

Drainage area. 110 sq mi, approximately.

Records available. October 1946 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 5,880 ft (from river-profile map).

Average discharge.--S years, 68.8 cfs.

Extremes.--Maximum discharge during year, 342 cfs May 23 (gage height, 2.71 ft); minimum 

not determined, occurred during period of no gage-height record

1946-51: Maximum discharge, 646 cfs June 12, 1949 (gage height, 3.71 ft); minimum 

not determined.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in ciToic feet per second)

(Shifting-control method used Oct. 1 to Nov. 9)

1.0 

1.3

1.6 

2.0 

3.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

29Z9~

29SB28

27

27

27

27

27

27

26

26

25

25

26

25

24

24

24

23

23

23

23

23

*22

22

22

21

19

18_

769

24.8

1,530

Nov.

18

19IB18

16

18

17

17

14

b!2

b!3

b!5

b!5

b!5

 15

(*)

-

463

15.4

918

Dec.

13

(*)

403

13

799

Jan.

12

(*)

372

12

738

Feb.

12

_

_

-

336

12

666

Mar.

12

*12

13

13

 13

390

12.6

774

Apr.

1313"

TT

20

16

17

17

17

16

*21

15

14

17

25

24

21

23

20

19

27

21

18

21

24

21

22

21

21

3055"

-

596

19.9

1,180

May

21

20

19

2T

24

29

29

*29

27

27

27

32

34

31

31

32

32

36

41

53

68

71

77

88

123

195

265

316

SW

290

*260

2,647

85.4

5,250

June

238 2To~

198

188

185

181

173

160

155

173

173

181

181

193

200

210

223

215

*205

198

202

193

183

166

157

153

144

135

131

127

-

5,431

181

10,770

July

127

12T

115

107

102

98

91

88

83

80

78

72

70

67

65

63

65

63

57

61

70

67

*55

52

51

.48

47

4615-

IB48

2,251

72.6

4,460

Aug.

52

51

72

78

BT

60

57

55

55

55

57

51

48

45

43

41

39

38

IT

59

59

*57

51

55

47

46

44

43

45

45

43

1,601

51.6

3,180

Sept.

44

4T

44

4T

40

38

37

35

34

32

32

31

31

30

29

29

29

29

28

27

26

26

25

25

24

24

23

*2T

23

23

-

926

30.9

1,840

Calendar year 1950: Max 463 Min - Mean 65.3 Ac-ft 47,300

Water year 1950-51: Max 316 Min - Mean 44.3 Ac-ft 32,100

Peak discharge (base, 40O cfs). No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 15 to Apr. 1 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of 4 discharge measurements, weather records, and records for nearby stations.
"^ GREEN RIVER BASIN

Green River near Greendale, Utah

Location.--Lat 40°55'00", long. 109 0 26'30", in N? sec. 16, T. 2 N., R. 22 E., on left bank 

4 miles northeasterly from Greendale and 12 miles southeasterly from Linwood.

Records available.- October 1950 to September 1951.

Gage.--Mater-stage recorder. Altitude of gage is 5,620 ft (from river-profile map).

Extremes.--Maximum discharge during year, 17,200 cfs June 3 (gage height, 10.04 ft); minimum daily, 434 cfs Dec. 7.

Rating table, water year 1950-51, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.2 

2.0 

3.0

420 

1,120 

2,2-40

4.0

7.0

10.0

3,740

9,890

17,100

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,250

1,270

1,270

1,270

1,520

1,270

1,220

1,220

1,220

1,220

1,220

1,270

1,270

1,270

1,270

1,270

1,220

1,220

*1,220

1,220

1,220

1,220

*1,Z10

1,190

1,180

1,160

1,150

1,180

1,210

1,220

1,280

38,200

1,232

75,770

Nov.

1,300

1,320

1,340

1,320

1,320

1,320

*1,340

1,330

1,330

1,110

1,090

960

767

570

557

1,200

1,150

1,250

1,330

1,740

1,890

1,636

1,790

1,660

1,640

1,630

1,550

1,420

1,370

1,420

-

40,144

1,338

79,620

Dec.

1,450

1,280

1,060

1,300

1,000

522

434

53U

902

866

1,270

1,400

1,450

1,380

1,240

1,140

1,090

970

950

1,190

1,100

902

893

875

875

875

902

950

704

570

562

30,632

988

60,760

Jan.

514

490

480

480

470

480

490

500

520

550

580

600

630

670

710

740

780

820

880

930

960

980

1,000

r, ooo

1,000

1,000

960

920

860

800

720

22,514

726

44,660

Feb.

700

730

eoO

850

900

980

1,000

1,050

1,100

1,150

1,200

1,250

1, 250

1,250

1,250

1,250

1,200

1,200

1,200

1,200

1,200

1,200

1,200

1,200

1,150

1,150

1,150

1,100

_

-

-

30,860

1,102

61,210

Mar.

1,100

1,000

1,050

1,100

1,150

1,190

1,120

1,010

1,040

1,020

920

940

1,140

1,100

1,150

1,080

875

848

I,t570~

1,130

1,170

1,580

2,240

2,500

2,600

2,450

2,550

2,700

2,850

2,650

2,500

46,823

1,510

92,870

Apr.

2,500

2,300

2,500

2,750

5,250

3,600

3,550

5,650

3,550

3,400

5,450

5,450

5,300

3,050

2,900

5,400

5,850

5,800

3,800

4,000

4,400

4,550

4,450

4,100

3,760

*5,720

4,080

4,120

5,970

3,810

-

106,810

3,560

211,900

May

5,920

4,690

4,520

3,880

3,560

3,070

2,940

3,310

*4,060

4,630

4,710

4,710

4,800

4,880

5,470

5,790

5,690

5,310

5,090

5,250

5,870

6,960

7,650

8,170

8,750

9,100

9,850

11,000

12,200

13,300

*14,800

197,710

6,378

392,200

June

16,200

16,700

16,900

15^000

*12,800

10, 700

8,880

7,650

6,870

6,430

*5,930

5,870

5,810

6,150

6,790

7,800

8,940

10,300

12,000

13,500

13,700

13,600

13,000

12,200

10,900

*9,670

8,770

8,110

7,650

-

315,520

10,510

625,400

July

7,500

7,460

7,400

7,100

6,740

6,450

6,410

6,560

6,580

6,490

6,390

6,270

6,170

6,370

6,210

5,510

4,970

4,710

4,500

4,570

4,820

5,110

5,750

6,310

*6,250

5,870

5,210

4,760

4,740

5,510

5,550

184,200

5,945

365,400

Aug.

d5, 490

d5,170

d5,090

d5,330

d6,030

d5,870

d6,170

d5,850

d5,390

d4,990

d4,690

d4,570

d3,970

d3,600

d3,280

d3,070

d2,890

d2, 700

d2,580

*d2,450

2,360

2,320

2,520

2,570

2,510

2,580

2,500

2,440

2,550

2,190

2,140

115,040

3,711

228,200

Sept.

2,140

2,500

2,680

2,610

2,380

2,210

2,090

1,970

1,850

1,790

1,740

1,660

1,560

1,510

1,480

1,460

1,440

1,410

1,590

1,330

1,290

1,270

1,250

1,190

1,180

*1,210

1,220

1,210

1,200

1,190

-

49,210

1,640

97,610

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 16,900 Mln 434 Mean 3,226 Ac-ft 2,336,000

Peak dlscharg (base, 9,000 efs).--June 5 (11 p.m.) 17,200 cfs (10.04 ft); June 22 (9 a.m.) 13,800

cfs (8.70 ft)

Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from recorder graph.

Note. Stage-discharge relation affected by ice Jan. 2 to Mar. 5. Ho gage-height record Oct. 3-18, 

- 2~4 K. to ,.- Apr. ._.. 24; .- discharg .__,_-._.. es timated on basis of weather records and records for other Green River

stations.
GREEN RIVER BASIN

Yampa River at Steamboat Springs, Colo.

Location. Lat 40°29', long. 106°50', in sec. 17, T. 6 H., R. 84 W., on right bank 30 ft 

downstream from First Street Bridge in Steamboat Springs, a quarter of a mile upstream 

from Soda Creek.

Drainage area.--604 sq mi.

Records available.--May 1904 to October 1906. October 1909 to December 1913, January 1914 

to September 1926 (monthly discharge only), and October 1933 to September 1951 in reports 

of Geological Survey. May 1904 to October 1906 and March 1910 to September 1951 in 

reports of State engineer.

Gage.--Water-stage recorder at present site since Mar. 8, 1910. Datum of gage is 6,696.23 

Tt above mean sea level, adjustment of 1912. prior bo May 8, 1905, staff gage at bridge 

a quarter of a mile upstream at datum 4.16 ft higher. May 8, 1905, to Mar. 7, 1910, chain 

gage on bridge 30 ft upstream at datum 0.44 ft higher. Mar. 8, 1910, to Sept. 11, 1934, 

at datum 0.44 ft higher.

Average discharge.--44 years (1904-6, 1909-51), 479 ofs.

Extremes.--Maximum discharge during year, 3,750 cfs May 29 (gage height, 5.43 ft); minimum 

 daily, 58 cfs Sept. 17.

1904-6, 1909-51: Maximum discharge, 6,820 cfs June 14, 1921 (gage height, 7.08 ft),

from rating curve extended above 4,800 cfs; minimum daily, 4 cfs Sept. 8, 1934, Sept. 10-

13, 1944.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Diversions for irrigation of about 19,700 acres above station.

Revisions.--W 7l54: Drainage area.

Rating table, water year 1350-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

0.8 

.9

1.3 160

1.7 

2.0 

3.0

300

435

1,060

1,900

3,080

3,860

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

105

140

146

154

I5T

135

132

138

*135

130

124

117

114

112

107

103

105

100

100

94

89

92

92

85

85

83

83

79

65

81

11

3,376

109

6,700

Nov.

81

92

92

94

103

112

122

130

TTT

79

735B80

105

90

*85

100

105

115

105

115

100

90

85

90

85

80

76

80

-

2,851

95.0

5,650

Dec.

82

65

68

72

66

64

*ST

70

80

90

95

3TT

95

90

85

80

82

86

88

90

85

82

85

90

90

85

82

80

90

95

95

2,563

82.7

5,080

Jan.

80

74

88

95

95

84

84

82

84

*85

95

90

88

90

105

100

105

105

95

78

74

90

85

90

100

100

90

90

85

76

70

2,752

88.8

5,460

Feb.

68

74

78

86

90

86

90

88

95

95

95

90

90

95

100

105

TDTT

95

90

*96

90

89

89

92

98

100

85

87

_

_

-

2,536

90.6

5,030

Mar.

98

89

85

94

87

75

BT

94

105

112

100

95

107

114

122

*124

110

105

107

107

120

135

157

152

146

157

169

178

175

175

187

3,762

121

7,460

Apr.

204 53"5~

284

354

372

430

524

524

390

340

284

256

268

*445

606

624

630

714

913

1,030

1,100

 BHS

878

1,030

1,05O

941

808

815

962

1,050

-

18,950

632

37,590

May

871

714

624 E4?

780

1,020

1,120

1,200

1,070

969

1,050

1,240

1,240

1,180

1,120

1,520

1,670

1,600

1,860

2,090

2,230

2,390

2,650

2,580

2,550

2,440

2,580

3,140

3,590

3", 220

3,180

54,130

1,746

107,400

June

3,080

2,390

1,870

1,600

1,520

1,590

1,740

1,870

1,800

1,700

1,550

1,570

1,800

2,030

*2,320

2,490

2,720

2,900

2,740

2,560

2,770

2,460

2,180

1,970

1,900

1,76O

1,640

1,480

1,360

1,280

-

60,640

2,021

130,300

July

1,150

1,080

990

927

815

738

678

606

540

502

*490

425

358

308

272

256

272

316

268

284

450

564

340

292

250

218

204 ~2~Z2

218

222

218

14,473

467

28,710

Aug.

*200

204

236

272

296

242

253

242

218

204

194

184

163

146

146

140

127

124

117

T27

187

187

172

175

184

163

143

140

175

242

204

5,807

187

11,520

Sept.

169 TJS"

132

122

112

105

98

83

73

75

77

*75

79

69

65

59

58 BT

83

79

75

79

77

73

69

71

75

73

81

92

-

2,588

86.3

5,130

Calendar year 1950 : Max 2,570 Min 47 Mean 387 Ac-ft 279,800

Water year 1950-51 : Max 3,59o Mln 58 Mean 478 Ac-ft 346,'000

Peak discharge (base, 5,000 cfs).--May 29 (2 a.m.) 3,750 cfs (5.43 ft).

* Discharge measurement made on -chia day.

Note. Stage-discharge relation affected by Ice Nov. 12 to Dec. 2, Dec. 7-17, Jan. 19-27, Feb. 21, 

MarTTl, 12, 17, 18. No gage-height record Dec. 3-6, Dec. 18 to Jan. 18, Jan. 28 to Feb. 19 (stagedischarge relation affected by ice during most of periods); discharge estimated on basis of 1 discharge measurement, weather records, and records for nearby stations.
204 GREEN RIVER BASIN

Elk River at Clark, Colo.

Loeation.--Lat 40°43', long. 106°55', in sec. 28, T. 9 N., R. 85 W., on left bank just 

downstream from bridge on State Highway 129 in Clark and 1 mile upstream from Cottonwood Gulch.

Drainage area.--206 sq mi.

Records available. May 1910 to November 1913, December 1913 to September 1922 (monthly 

discharge only in Water-Supply Paper 618), October 1933 to September 1951 in reports 

of Geological Survey. Published as "near Clark" 1910-13, May 1910 to September 1922, 

April 1930 to September 1951 in reports of State engineer.

Gage.--Water-stage recorder at present site aince Apr. 23, 1930. Datum of gage is 7,267.75 

ft above mean sea level (State Highway bench mark). Prior to Apr. 23, 1930, chain 

gage on bridge at datum 0.15 ft lower. Apr. 23, 1930, to Sept. 27, 1934, at datum 

0.15 ft lower.

Average discharge.--33 years, 358 cfs.

Extremes.--Maximum discharge during year, 2,400 cfs May 28 (gage height, 4.38 ft); minimum daily, 30 cfs Nov. 10.

1910-22, 1930-51: Maximum daily discharge, 4,470 cfs June 6, 9, 1912; minimum discharge observed, 22 cfs Apr 7, 1935 (gage height, 0.62 ft).

Remarks.--Records good except those for periods of ice effect, which are fair. Diversion 

above station for irrigation of about 230 acres above and about 460 acres below station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

0.6 

1.0 

1.4

1.8

28

68

142

260

2.0 

2.5 

3.0 

4.5

340

620

990

2,540

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

82

87

76

72

69

67

69

71

*66

62

60

58

56

54

53

50

49

49

49

49

49

49

48

49

48

46

48

50

46

44

1,780

57.4

3,530

Nov.

46

45

38

49

44

50

53

54

31

30

39

49

53

50

48

*40

52

61

61

55

60

70

5F

65

65

61

60

59

57

61

-

1,574

52.5

3,120

Dec.

59

60

60

64

58

54

*5T

60

62

64

66

ST

64

62

60

60

62

64

64

62

60

58

60

60

62

60

60

58

58

60

60

1,881

60.7

3,730

Jan.

58

BT

56

58

58

58

58

56

56

56

*56

56

56

56

58

58

56

56

54

49

49

52

50

50

52

50

49

46

44

41

39

1,645

53.1

3,260

Feb.

40

42

42

44

4T

43

43

43

43

44

43

41

40

40

42

43

43

41

40

40

39

38

38

37

*3T

38

38

38

_

-

-

1,144

40.9

2,270

Mar.

40JO42

45

43

41

40

44

48

52

50

48

49

52

54

*56

56

52

50

50

52

54

58

SB- 60

58

60

54

54

56

54

1,568

50.6

3,110

Apr.

56

58

64

67

68

69

79

86

86

76

75

71

71

*87

102

114

138

155

193

246

264

208

260

395

380

395

336

395

470

375

-

5,439

181

10,790

»y

288

236

S4TT

340

572

830

934

910

792

755

838

1,080

1,010

950

934

1,280

1,330

1,140

1,270

1,510

1,500

1,460

1,690

1,720

1,590

1,510

1,570

1,920

2,020

1,970

1,970

36,159

1,166

71,720

June

1,650

1,220

974

854

846

926

1,010

1,010

1,050

1,100

1,050

94,2

1,010

1,130

*1,310

1,520

1,670

1,830

1,770

1,730

1,700

1,520

1,440

1,300

1,400

1,470

1,420

1,370

1,320

1,240

-

38,782

1,293

76,920

July

1,170

1,190

1,120

1,170

1,170

1,090

1,050

966

846

778

*685

672

620

566

524

494

488

476

446

458

554

542

400

350

316

308

332

324

292

276

23T

19,965

644

39,600

Aug.

*328 272"

260

280

312

250

226

220

196

174

160

150

140

131

124

118

112

108

TOJT

131

147

179

152

196

160

127

110

112

112

196

147

5,438

175

10,790

Sept.

120

TolT

100

93

89

82

81

78

75

72

74

*78

78

72

65

65

62

62

66

62

66

64

62

58

57

52

50

5TT

53

50

-

2,144

71.5

4,250

Calendar year 1950 : Max 2,290 Mln 30 Mean 338 Ac-ft 244,800

Water year 1950-51: Max 2,020 Min 30 Mean 322 Ao-ft 233,100

Peak discharge (base, 1,900 cfs). May 28 (8 p.m.) 2,400 cfs (4.38 ft); June 19 (10 p.m.) 2,140 cfs 

(4.15 ft) .

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by ice Nov. 10, 11, 16, 17, 20-23, Dec. 3 to Mar. 26.
GREEN RIVER BASIN 205

Yampa River near Maybell, Colo.

Location.--Lat 40°30', long. 108°0£:', in sec. 2, T. 6 N., R. 95 W., on left bank 100 ft 

downstream from bridge on U. S. Highway 40, 3 miles east o:? Maybell.

Drainage area. 3,410 sq mi.

Records available.--April 1904 to October 1905, June 1910 to November 1912, April 1916 to 

September 1951 (monthly discharge only October 1917 to September 1933, no winter records 

prior to 1917).

Gage.--Water-stage recorder at present site since Oct. 30, 1936. Datum of gage is 5,900.23

 Ft above mean sea level, datum of 1929. Prior to 1916, staff or chain gage at Thornburgh Bridge about 14 miles downstream at different datum. Apr. 24, 1916, to Apr. 17, 

1919, chain gage, and Apr. 18, 1919, to Oct. 29, 1936, water-stage recorder at Fraker 

Ford Bridge 700 ft downstream at different datum.

Average discharge.--35 years (1916-51), 1,607 cfs.

Extreme s. Maximum discharge during year, 8,870 cfs May 30 (gage height, 7.49 ft); minimum

 daily, 125 cfs Dec. 6.

1904-5, 1910-12, 1916-51: Waximum discharge observed, L7.900 cfs May 19, 1917 (gage 

height, 10.4 ft, site and datum then in use, from floodmarks), from rating curve extended above 12,000 cfs; minimum daily, 2 cfs July 17-19, 1934.

Remarks.--Records good except those for periods of ice effect, which are fair. Many diversions for irrigation above station. Records of chemical analyses, water temperatures,

and sediment loads for the water year 1951 are given in Wa';er-Supply Paper 1200.

Rating table, water year 1950-51, except periods 3f ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.4 

1.6 

1.8 

2.5 

3.0

110

165

240

595

950

Discharge, In cubic feet per second, water year October 1350 to September 1951

Day

I

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

267

280

267

294

326

316

316

312

298

*290

294

294

280

272

254

244

240

*232

232

224

216

216

212

204

200

200

193 T53-

200

200

196

7,762

250

15,400

Nov.

208

220

224

232

240

236

244

258

230

180

200

220

193

258

326

321

258

272

303

366

*375

385

436

458 4TO~

339

321

321

303

285

-

8,622

287

17,100

Dec.

298

321

285

240

*262

125 170"

254

254

290

366

390 370"

357

352

362

316

228

232

330

294

208

215

230

236

236

228

190

210

230

225

8,304

268

16,470

Jan.

220

210

220

230

240

235

230

210

225

225

255

240

220

220

260

250

245

*250

255

260

230

25o~ 265

260

255

240

240

235

220

200

170

7,275

235

14,430

Feb.

145

T9TT

250

270

290

310

55(7

280

270

280

290

295

265

245

240

250

280

280

280

285

255

*265

260

285

230

285

295

295

_

_

-

7,505

268

:4,890

Mar.

280 3TO~

290

320

430

550

660

772

688

688

640

583

530

452

474

474

518

491

*474

458

442

565

583

595

565

547

608

674

654

589

614

16,518

533

32,760

Apr.

654 779-

800

863

1,060

1,150

1,330

1,450

1,630

*1,250

1,060

870

772

709

950

1,450

1,400

1,560

1,890

*2,520

2,860

3,350

2,960

2,740

3,050

3,570

3,410

3,220

3,050

3,200

 -

55,557

1,852

110,200

May

3,360

3,240

2,990

2,570

2,350

2,630

3,470

4,190

4,630

4,590

4,390

4,460

*4,910

4,860

4,500

4,320

5,580

*5,930

5,400

5,820

6,680

7,280

6,990

7,490

7,590

7,300

6,940

6,870

7,730

8,460

8,510

166,030

5,356

329,300

June

8,120

8,020

6,500

4,910

4,050

3,550

3,540

3,920

4,190

4,340

4,390

4,100

3,710

4,100

*4,610

5,040

5,780

6,650

7,180

7,180

7,320

7,040

6,570

5,780

5,140

4,930

*4,970

4,730

4,500

4,100

-

158,960

5,299

315,300

July

3,980

3,550

3,470

3,180

3,160

3,050

2,740

2,640

2,430

*2,140

1,940

1,730

1,660

1,480

1,320

1,160

1,090

1,070

1,100

1,020

977

1,240

1,680

1,240

968

863

779

716

751

765

709

54,598

1,761

108,300

Aug.

688

674

*681

660

723

765

793 574"

654

608

553

508

480

436

405

370

339

321

294

285

272

55(7

357

370

366

362

380

339

334

375

362

14,718

475

29,190

Sept.

496 JT7"

370

330

294

272

249

228

208

*186

172

162

156

159

165

168

162

156

156

150

162

176

179

182

186

182

172

165

165

176

-

6,431

214

12,760

Calendar year 1950 .- Max 8,000 Mln 61 Mean 1,301 Ac-ft 941,500

Water year 1950-51 : Max 8,510 Mln 125 Mean 1,404 Ac-ft 1,016,000

Peak discharge (base, 7,000 efs).--May 30 (7 p.m.) 8,870 cfs (7.49 ft); June 21 (5 p.m.) 7,710 cfs 

7.02 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 9-12, Dec. 7, 23, 24, Dec. 28 to Mar. 7.
206 GREEN RIVER BASIN

Little Snake River near Slater, Colo.

Location. Lat 41°00', long. 107°10', in SWi sec. 15, T. 12 N., R. 87 W., on left bank

 just downstream from highway bridge at Focus Ranch, a quarter of a mile downstream 

from Willow Creek, and 11 miles east of Slater.

Drainage area.--285 sq mi.

Records available.--October 1942 to September 1947, October 1950 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 6,829.57 ft above mean sea level, unadJusted.

Average discharge.--6 years, 226 cfs.

Extremes. Maximum discharge during year, 2,050 cfs May 28 (gage height, 7.26 ft), from

 rating curve extended above 1,400 cfs; minimum daily, 16 cfs Sept. 8, 9.

1942-47, 1950-51: Maximum discharge, 3,140 cfs June 1, 1943 (gage height, 8.22 ft), 

from rating curve extended above 1,400 cfs; minimum daily, 8.6 cfs Sept. 10, 1944.

Remarks.--Records excellent except those for periods of ice effect or no gage-height rec-

 oruT which are fair. Diversions for irrigation above station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

4.7 

5.0 

5.5 

6.0 

7.1

220

320

580

930

1,890

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

33

56

53

42

35

32

33

33

33

31

*28

28

26

26

25

26

26

25

24

24

24

24

24

24

25

25

26

26

32

28

27

924

29.8

1.830

Kov.

29

32

25

33

28

37

38

41

31

28

31

35

37

39

*38

32

34

36

37

39

37

41

37

34

34

35

33

32

31

32

-

1,026

34.2

2,040

Dec.

29

26

29

33

31

29

31

*33

35

11

36

36

35

36

35

34

33

32

32

33

34

34

35

34

33

33

32

30

32

33

35

1,020

32.9

2,020

Jan.

34

33

34

35

33

31

29

31

31

31

32

*32

32

30

29

31

31

31

29

28

28

29

30

31

30

29

27

26

26

26

25.

934

30.1

1,850

Feb.

22

23

25

25

25

25

26

26

26

26

24

23

22

22

21

21

22

22

22

21

20

21

*21

20

19.

19

20

20

_

_

-

629

22.5

1,250

Mar.

20

20

21

22

23

24

25

28

31

29

27

24

24

24

25

26

*29

34

39

44

47

50

52

50

50

54

64

66

60

56

58

1,146

37.0

2,270

Apr.

62

73

83

87

85

94

109

123

109

94

80

76

*87

128

142

145

175

196

241

292

271

226

296

445

390

400

336

395

496

420

-

6,156

205

12,210

May

332

285

278

365

550

745

858

922

836

794

938

*1,090

1,030

938

986

1,240

1,240

1,130

1,200

1,380

1,420

1,400

1,490

1,590

1,590

1,560

1,570

1,720

1,820

1,760

1,710

34,767

1,122

68,960

June

1,560

1,270

1,040

882

8O1

780

773

78O

801

866

946

815

815

*822

850

946

994

986

898

836

815

738

703

628

610

562

514

478

425

380

-

24,314

810

48,230

July

344

320

313

264

244

214

193

172

160

150

145

*133

116

103

94

90

90

96

83

78

123

135

89

73

66

62

67

76

62

56

58

4,2G9

138

8,470

Aug.

58

*49

56

85

94

73

58

61

53

42

34

32

30

30

29

25

24

24

24

27

35

42

41

44

46

35

28

27

33

73

48

1,360

43.9

2,700

Sept.

3835"

30

29

22

21

19

16

16

17

*19

21

21

20

20

19

19

19

20

20

20

21

21

21

20

19

18

18

19

20

-

638

21.3

1,270

Calendar year 1950 : Max - Min - Mean - Ac-ft -

Water year 1950-51 : Max 1,820 Min 16 Mean 211 Ac-ft 153,100

Peak discharge (base. 1.600 cfs).--May 28 (9 p.m.) 2,050 efs (7.26 ft)

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10 to Apr. 1 (no gage-height record Dec. 28 tc 

Mar. 16; discharge estimated on basis of 2 discharge measurements, weather records, and records for 

nearby streams).
GREEN RIVER BASIN 2C 

Battle Creek near Slater, Colo.

location.--Lat 41°00', long. 107°15', in NW£ sec. 14, T. 12 N., R. 88 W. (Colorado), on 

left tank 10 ft upstream from bridge on Colorado highway 129 at Wyoming-Colorado State 

line, a quarter of a mile upstream from mouth,and 7 miles east of Slater.

drainage area.--85.3 sq mi.

Records available.--October 1942 to September 1951 (discontinued).

Gage.--Water-stage recorder. Datum of gage is 6,696.10 ft above mean sea level, adjust-

 ment of 1912. Prior to Oct. 16, 1944, at datum 1.00 ft higher.

Average discharge.--9 years, 83.1 cfs.

Extremes.--Maximum discharge during year, 844 cfs May 28 (gage height, 2.82 ft), from

 rating curve extended above 370 cfs; minimum daily, 5.4 cfs Sept. 27, 28.

1942-51: Maximum discharge, 1,160 cfs May 21, 1948 (gage height, 3.43 ft), from 

rating carve extended above 370 cfs; maximum gage height, 5.64 ft June 1, 1943; minimum daily discharge, 2.8 cfs Sept. 14-17, 1948.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for Irrigation above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. I to Feb. 28

-0.2 7.5 

-.1 11

Mar. 1 to Sept. 30

-0.2 12

-.1 17

.2 38

.4 59

0.8 127

1.4 270

2.6 745

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

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.

11

13

10

8.6

8.6

8.6

8.6

8.6

8.6

8.6

*8.2

8.2

8.2

8.2

8.2

8.2

7.8

7.8

7.8

8.3

8.9

9.2

8.9

8.6

8.2

8.2

8.2

8.2

8.2

8.2

8.2

268.7

8.67

533

Nov.

8.2

8.2

8.2

8.2

8.2

8.2

8.6

8.2

8.2

6.0

7 .0

8.6

14

10

*9.2

8.6

8.8

9.6

10

10

10

11

9.6

10

11

11

11

10

10

9.6

-

279.2

9.31

554

Dec.

10

8.4

10

11

9.6

9.0

11

*12

13

13

13

13

10

10

11

9.2

9.6

10

10

8.9

8.6

8.8

9.4

9.8

9.8

9.4

9.0

8.8

9.4

10

11

315.7

10.2

626

Jan.

10

10

11

11

10

9.8

9.2

9.6

9.8

9.8

10

*10

9.4

9.6

10

11

10

11

9.6

8.6

8.8

9.0

8.8

9.6

9.4

8.8

8.4

8.0

7.8

8.0

7.6

293.6

9.47

582

Feb.

7.6

7.8

8.0

8.8

9.2

9.0

9.4

10

9.6

10

9.6

9.2

9.2

9.2

8.4

8.4

9.0

10

10

10

9.8

10

*11

10

10

10

9.8

9.8

_

_

-

262.8

9.39

521

Mar.

9.8

9,8

9,8

10

11

11

11

12

12

11

10

9.8

9.6

9.4

9.4

9.2

*9.2

9.4

9.4

9.4

9.6

9.8

11

11

12

13

16

18

17

18

21

358.6

11.6

711

Apr.

24

29

32

35

34

38

40

42

39

35

29

26

*28

42

49

48

58

62

72

90

88

68

80

131

118

123

110

103

116

114

-

1,903

63.4

3,770

May

94

85

76

95

June

578

434

333

270

123 249

185

225

220

208

202

228

*277

252

225

264

375

354

330

361

438

420

424

501

574 5-78

578

61S

686

732!

686.

664

11,080

357

21,980

243

240

243

249

277

284

261

277

*294

326

378

400

378

361

330

298

267

235

210

202

202

190

179

170

155

-

8,513

284

16,890

July

141

13T

121

112

101

90

84

76

70

70

65

*57

48

44

41

40

39

36

33

34

58

47

36

32

28

25

24

25

24

22

2i

1,775

57.3

3,520

Aug.

20

*19

19

29

2T

21

19

18

16

15

14

14

13

12

12

11

9.4

9.2

9.2

9.6

11

13

13

13

14

12

10

10

15

25

14

465.4

15.0

923

Sept.

12

10

9.2

8.8

7.4

6.8

6.2

6.0

6.0

6.0

*6.3

6.4

6.6

6.2

6.2

5.8

5.8

5.8

6.0

6.0

0.0

6.2

6.2

6.2

5.8

5.6

5*1

5.4

5.6

6.0

-

197.9

6.60

393

Calendar year 1950: Max 733 Mln 4.5 Mean 87.5 Ac-ft 63,350

Water year 1950-51: Max 732 Mln 5.4 Mean 70.4 Ac-ft 51,000

Peak discharge (base, 750 cfs).--May 28 (10 p.m.) 844 cfs (2.82 f;) .

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10, 1], 16-13, Dec. 2-10, Dec. 21 to Jan. 31, 

Feb. 23 to Mar. 31. No gage-height record Feb. 1-22 (stage-discharge relation affected by Ice during 

most of period), Aug. 13-24, 26-28, Sept. 1-30; discharge estimated on basis of 1 discharge measurement, weather records and records for nearby stations.
GREEN RIVER BASIN

Slater Pork near Slater, Colo.

Location. Lat 40°59', long. 107°23 T , in SWij sec. 21, T. 12 N., R. 89 W., on right bank 

about 1 mile upstream from mouth and l| miles south of Slater.

Drainage area. 161 sq mi.

Records available.--May 1910 to May 1912 and October 1933 to September 1951 in reports of 

Geological Survey. May 1910 to May 1912 and June 1931 to September 1951 in reports of 

State engineer.

Gage.--Water-stage recorder. Altitude of gage is 6,600 ft (from river-profile map). May 

1910 to May 1912, staff gage at site if- miles upstream at different datum.

Average discharge.--20 years (1931-51), 72.7 cfs.

Extremes. Maximum discharge during year, 445 cfs May 12 (gage height, 5.14 ft); minimum 

daily, 4.8 cfs Sept. 27, 28.

1910-12, 1931-51: Maximum daily discharge, 1,700 cfs May 19, 1912; no flow Aug. 2- 

10, 1934, Aug. 18, 25-27, 1936.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Diversions for irrigation of about 1,300 acres above station.

Revisions.--W 764: Drainage area.

Rating table, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1, 2, Apr. 8-27)

3.0 130

4.0 250

5.0 408

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

28

2?

19

17

16

15

14

14

14

*14

14

14

14

13_

14

14

14

14

14

15

16

15

15

14

14

15

16

16

16

15

485

15.6

962

Nov.

15

16

17

18

17

17

19

20

10

5.0

11

17

16

16

*15

12

b!5

17

b!9

blS

b22

b2T

blS

16

16

17

17

18

17

15

-

488.0

16.3

968

Dec.

14

12

TT

16

14

13

15

17

*18T3-

18

16

16

17

17

16

16

16

17

16

16

15

16

16

16

15

14

15

15

16

IS

488

15.7

968

Jan.

15

13

16

19

19

15

12

7.0 1C 

9.0

12

15

*17

15

17

17

18

19

20IB"

12

15

13

17

18

19

IS

17

16

14

10

469.0

15.1

930

Feb.

7.0 370-

12

13

17

15

16

18

b!7

b!9

blS

b!6

b!6

blS

b!4

b!7

b!9

bE2

b21

22

22

24

*2T

b20

18

'oil

blS

20

-

-

-

484.0

17.3

960

Mar.

23

22

21

2050-

21

22

22

b26

b30

b25

b22

b22

22

24

24

*b27

b28

26

25

29

b31

b28

b28

b29

b34

38

5T

37

32

29

821

26.5

1,630

Apr.

28

2F

33

38

38

38

39

17

40

39

32

*30

30

46

50

49

64

71

85

106

103

71

104

197

HT

153

122

134

182

148

-

2,293

76.4

4; 550

May

115

96

86 103"

164

270

302

322

282

247

302

*358 315"

254

247

334

3O6

244

256

293

339

299

283

302

307

278

254

310

*339

318

336

8,261

266

16,390

June

310 2T9"

165

137

130

133

135

138

148

160

193

164

*162

190

182

195

211

221

189

170

*186

176

142

124

110

107

94

82

70

68

-

4,721

157

9,360

July

58

5T

44

38

34

28

24

20

18

*14

16

*15

12

11

8.9

8.5

8.5

8.9

8.1

7.8

18

26

17

13

9.8

8.5

8.1

11

14

11

9.2

579.3

18.7

1,150

Aug.

20

13

*12

38

3?

30

18

16

13

11

11

10

9.2

8.3

7.4

7.2

6.7

6.5

6.7

7.8

10

12

11

12

12

9.4

7.0

6.1

S7T

27

19

418.0

13.5

829

Sept.

14TO8.7

7.6

7.0

6.5

6.0

5.6

5.4

5.6

*5.6

6.9

6.9

6.3

6.1

6.1

6.1

6.3

6.9

7.2

7.0

7.4

7.6

7.0

6.5

5.4

578- 4.8

5.1

5.4

-

201.8

6.73

400

Calendar year 1950: Max 811 Mln 2.3 Mean 92.5 Ac-ft 66,980

Water year 1950-51: Max 358 Mln 4.8 Mean 54.0 Ac-ft 39,100

Peak discharge (base, 450 efs).--May 12 (2 a.m.) 445 cfs (5.14 ft).

Discharge measurement made on thls day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Oct. 4-6, Nov. 26 to Feb. 8, Mar. 3 (stage-discharge relation affected 

r ice during part of periods); discharge estimated on basis of 2 discharge measurements, weather

records, 'f.nrrtFt. arH ani rpnnr'rtn records for fnr* npsiT'T-nr nearby Rf-.si-M stations. nna
GREEN RIVER BASIN 209

Savery Creek near Savery, Wyo.

Location.--Lat 41°06'00", long. 10?°22'50", in SW-f sec. 14, T. 13 N., R. 89 W., on right

 bank at downstream side of highway bridge, 1-f miles downstream from Loco Creek and 

6j miles northeast of Savery.

Drainage area.--330 sq mi.

Records available.--October 1941 to September 1946, October 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 6,680 ft (from topographic map). Prior

 fo October 1947, at site on abandoned channel 300 ft to right at different datum.

Average discharge.--9 years, 109 efs.

Extremes.--Maximum discharge during year, 602 cfs May 6 (gage height, 4.67 ft); minimum

 daily, 2.8 cfs Sept. 10.

1941-46, 1947-51: Maximum discharge, 1,630 efs May 17, 1949 (gage height, 6.07 ft), 

from rating curve extended above 730 cfs; minimum daily, 1.2 cfs Sept. 9, 1948.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 wFuch are fair. Diversions above station for irrigation o.f 1,400 acres above and 130 

acres below station.

Rating table, water year 1950-51, except periods of ice effect (gage height, in feet, 

and discharge, in cubic feet per second)

2.9

3.0 

3.2

3.7 

4.0 

4.5

160

260

505

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

13

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

24

3736-

30

25

23

22

23

23

*23

22

22

21

2T

21

22

22

21

21

21

21

23

22

21

22

21

22

24

26

27

23

732

23.6

1,450

Nov.

24

2F

27

27

27

27

28

29

26

25

24

24

27

*24

25

24

28

30

32

34

39

3T

36

32

30

29

28

30

32

30

-

863

28.8

1,710

Dec.

27

29

32

29

26_

26

30

*3736-

35

34

34

34

35

33

33

32

32

32

31

30

32

33

33

33

32

31

29

30

31

32

983

31.7

1,950

Jan.

31

29

29

31

32

31

29

29

30

31

31

*31

30

31

32

34

3T

33

33

30

30

33

31 "34

32

30

27

27

27

27

25_

943

30.4

1,870

Feb.

23

2T

27

30

32

31

32

33

32

34

33

31

31

32

29

29

30

32

34

32

33

35 *3S~

34

32

32

34

33

_

_

-

879

31.4

1,740

Mar.

333S35

36

38

40

43

46

50

42

40

38

37

37

37

39

42

*44

42

38

38

42

61

74

66

80

100

138 T2~2~

1OO

110

1,723

55.6

3,420

Apr.

152

178

200

253

268

315 2T5"

225

163

142

118

*100

94 ITS'

218

160

166

169

218

264

236

163

181

288

292

276

250

253

268

276

-

6,286

210

12,470

May

208

175

TST

228

315

405

456

32U

380

365

365

*400

360

300

300

435

425

360

340

360

375

335

315

325

330

305

310

315

34C

315

292

30,335

333

?0 , 500

June

272

2~3lT

211

:78

155

148

142

150

152

152

175

158

*145

145

142

145

146

152

145

135

128

145

132

115

100

94

86

76

70

65

-

4,300

143

8,530

July

59

5F

48

44

36

31

28

25

22

21

19

*17

17

15

14

14

15

14

14

13

14

16

15

14

12

12

12

11

17

12ia

664

21.4

1,320

Aug.

11

11

*13

17

TF

15

12

11

11

9.6

7.4

6.8

6.1

4.9

4.4

4.1

3.6

3T^

3.6

4.6

6.1

7.1

6.4

6.8

6.8

5.7

5.7

5.4

7.4

13

13

259.1

8.36

514

Sept.

10

T.I

7.4

7.4

6.8

6.1

5.1

4.6

3.6

2.8

*3.1

3.3

4.1

4.4

4.1

4.1

4.6

4.4

4.6

4.6

5.7

7.1

7.4

7.1

7.8

6.8

7.1

6.8

6.4

8.1

-

173.5

5.78

344

Calendar year 1950 : Max 922 Min 11 Mean 127 Ac-:?t 91,600

Water year 1950-51 : Max 456 Mln 2.8 Mean 77.1 Ac-?t 55,82O

Peak discharge (base, 500 efs).--Apr. 6 (7 a.m.) 385 cfs (4.27 ft); May 6 (10 p.m.) 6O2 cfs (4.67 

ft), May 17 (3 a.m.) 500 cfs (4.49 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10, Nov. 16 to Jan. 28. No gage-height record 

Jan. 29 to Mar. 17 (stage-discharge relation affected by ice during most of period); discharge computed on basis of 1 discharge measurement, weather records, and records for nearby stations.
210 GREEN RIVER BASIN

Little Snake River near Dixon, Wyo.

Location. Lat 41°02', long. 107°32', in sec. 6, T. 12 N., R. 90 W., on left bank 25 ft 

downstream from highway bridge, 600 ft upstream from Willow Creek,and 1 mile west of 

Dixon.

Drainage area.--£ sq mi.

Records available.--May 1910 to September 1923 (no winter records, monthly discharge only 

Marcn 1914 to September 1916), March 1938 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 6,332.81 ft above mean sea level, unadjusted. 

Hay 27, 1910, to Sept. 30, 1923, chain gage on bridge at same datum.

Average discharge.--13 years (1938-51), 479 cfs.

Extremes. --Maximum discharge during year, 3,290 cfs May 29 (gage height, 5.26 ft); minimum 

 cTaily, 4.1 cfs Sept. 11.

1910-23, 1938-51: Maximum discharge observed, 8,960 cfs May 23, 1920 (gage height,

8.3 ft), from rating curve extended above 6,000 cfs; minimum daily, 0.6 cfs Aug. 24-27,

1939.

Remarke.--Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Diversions above station for irrigation.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

3.8 

5.4 

7.5 160

290

455

3.5

4.0 

5.0 

5.2

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

61

90

~55 107

91

81

75

76

74

66

*62

59

57

53

54

54

54

53

50

!§.

52

54

56

54

54

54

58

64

74

79

74

2,033

65.6

4,030

Nov.

78

78

83

78

85

84

9,2

97

87

52

66

72

84

*90

90

78

84

92

100

92

124

IZT

116

95

95

100

95

91

84

96

-

2,682

89.4

5,320

Dec.

84

68

7F

94

84

78

92

1/10

*119

120

120

116

112

114

111

108

103

100

103

98

93

90

94

94

92

88

82

80

86

96

98

3,005

96.9

5,960

Jan.

94

94

98

102

98

92

86

90

90

94

*96

94

90

94

100

115

103

~9T 118

88

90

106

94

112

106

96

88

86

82

84

72_

2,948

95.1

5,850

Feb.

6672"

80

90

100

94

106

112

107

120

107

1UC

92

98

88

86

102

110

112

100

112

116

124

*TTB106

104

116

108

_

_

-

2,846

102

5,640

Mar.

110

TRT

110

118

120

120

138

160

170

130

120

116

110

110

110

130

138

*142

152

162

175

168

160

158

168

197

262

Z~4tT

209

229

240

4,782

154

9,480

Apr.

270

312

368

530

508

570

492

515

422

368

294

266

*243 3~5T

492

422

500

538

655

866

877

602

682

1,200

1,220

1,190

1,020

982

1,220

1,210

-

19,191

640

38,060

May

946

780

691

HTTO"

1,100

1,660

1,950

2,060

1,920

1,750

1,830

*2,130

2,190

1,880

1,780

2,330

2,430

2,090

2,130

2,320

2,570

2,340

2,500

2,640

2,720

2,720

2,710

2,860

3,160

5,960

2,860

64,807

2,091

128,500

June

2,740

2,27(5

1,840

1,540

1,370

1,300

1,260

1,230

1,270

1,340

1,560

1,450

1,450

*1,480

1,490

1,630

1,760

1,720

1,600

1,490

1,390

1,370

1,200

1,040

946

922

790

690

628

530

-

41,296

1,377

81,910

July

45j'

39T

322

274

243

197

172 146'

112

71

62

53

*38

24

19

16

14

14

12

12

14

4i

zi

11

8.6

6.7

6.4

6.0

BTT

6.0

6.4

2,781.5

89.7

5,520

Aug.

7.8

*8.2

7.1

12

22

a!8

a!3

all

9.2

6.7

6-. 4

6.2

5.8

5.2

4.9

4.9

4.9

4.6 575-

5.1

5.6

6.2

6.9

6.9

6.9

7.1

6.2

5.2

7.3

11

19

256.1

8.26

508

Sept.

12

T.2

7.8

7.3

7.5

7.1

5.6

5.2

4.9

4.3

*4.1

ITT

5.1

5.1

4.6

4.6

6.0

6.9

7.8

7.8

8.6

8.9

9.6

10

9.6

8.6

6.0

5.6

5.8

6.2

-

206.2

6.87

409

Calendar year 1950: Max 4,180 Mln 7.5 Mean 547 Ac-ft 396,200

Water year 1950-51: Max 3,160 Mln 4.1 Mean 402 Ac-ft 291,200

Peak discharge (base, 5,200 cfs).--May 29 (10 a.m.) 3,290 cfs (5.26 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

stations.

Note.--Stage-discharge relation affected by Ice Nov. 16, 17, 23, Nov. 30 to Mar. 19.
Little Snake River near Lily, Colo.

Location.--Lat 40°32', long. 108°25', in sec. 20, T. 7 N., R. 98 W., on left bank 300 ft 

downstream from highway bridge, 6 miles north of Lily, and 1.0 miles upstream from mouth.

Drainage area.--3,730 sq mi.

Records available.--June to August 1904, October 1921 to September 1951 (monthly discharge 

only, October 1927 to February 1934).

corder on highway bridge at datum 4.24 ft lower. 

Average discharge.--30 years (1921-51), 596 cfs.

Extremes.--Maximum discharge during year, 3,320 cfs May 30 (gage height, 4.63 ft); minimum 

daily, O.C cfs Sept. 27.

1904, 1921-51: Maximum discharge, 14,200 cfs May 27, 1926 (gage height, 10.5 ft), 

from rating curve extended above 3,600 cfs; no flow at times in many year?,

Remarks.--Records good except those for periods of ice effect, which are poor. Diversions 

for" irrigation above station.

Rating table, water year 1951-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic fest per second)

51

114

236

705

1,170

2,330

5,780

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

35

38

32

31

SF

53

64

68

ST

*64

62

64

62

60

55

51

53

53

49

51

49

49

49

48

51

53

53

59

59

60

60

1,637

52.8

3,250

Nov.

66

76

76

74

78

82

80

78

30

23

50

100

86

110

110

102

127

130

132

127

*132

146

117

146

146

152 TT9-

107

119

Dec.

117

TTi7

48

70

*31

25

4T

68

74

84

98

102

94

92

92

94

72

64

66

72

74

70

72

76

77

76

70

58

60

127 | 66

-

3,048

102

6,050

63

2,274

73.4

4,510

Jan.

58

54

58

62

54

51

49

49

52

57

66

62

58

58

60

64

68

*60

69

58

55

67

64

78

8_4

76

66

60

62

56

45

1,880

60.6

3,730

Feb.

40

5TJ

64

80

128

152

147

150

150

145

154

158

140

120

112

130

155

170

176

150

198

*180

184

198

208

190

168

165

_

_

-

4,062

145

8,060

Mar.

148

160

150

155

162

168

175

190

21C

232

228

218

215

230

244

270

236

130

*104 T8~B~

240

255

356

409 3TB278

305

318

376

387

37P

7,423

239

14,720

Apr.

356

342

327

323

332

387

457

496

536

523

*502

445

393

342

300

337

*4B9

482

523

602

722

890

890

739

773

1,220

1,170

1,100

975

946

-

17,914

597

35,530

May

1 , 120

1,130

994

880

799

835

1,250

1,950

2,150

2, 0^0

2,290

1,880

*2 02C

2^030

*1,S6C

],80C

2,1CC

2,36C

2,08C

1.94C

2,07C

2,47C

2,250

2,230

2,360

2,540

2,540

2,540

2,620

2,890

3 , 030

61,078

1,970

121,100

June

2,850

2,780

2,440

1,980

1,640

1,390

1,270

1,220

1,210

1,200

1,250

1,330

1,500

*1,410

1,380

1,380

1,400

1,580

1,660

1,600

1,470

*1,380

1,370

1,310

1,190

1,020

946

899

790

705

-

43,550

1,452

86,380

July

632

55(7

482

432

382

314

283

240

208

*176

149

135

104

80

80

72

64

49

35

43

90

201

57

30

22

32

41

35

28

22

27

5,095

164

10,110

Aug.

21

23

4055-

37

19

*15

10

10

16

' 21

13

11

10

8.5

7.6

7.2

6 .4

5.6

7 .2

8.0

8.5

7.6

9.5

9.5

6.4

4.4

3.4

STT

51

12

450.2

14.5

893

Sept.

13

17

T.O

6.4

6.4

5.2

7.6

6.8

5.2

*3.4

3.2

2.9

2.6

2.3

2.0

1 l'.55

*1.5

2.0

1.5

1.2

1.2

1.2

1.1

.9

.8

.6

TT

1.5

1.5

-

111.7

3.72

222

Calendar year 1950: Max 4,300 Min 3.1 Mean 594 Ac-ft 430,200

Water year 1950-51: Max 3,030 Min 0.6 Mean 407 Ac-ft 394,500

Peak discharge (base, 3,50O cfs). No peak above base.

* Discharge measurement made on this day.

Mote . Stage discharge relation affected by ice Nov. 10-15, Dec. t, to Mar. 14.
GREEN RIVER BASIN

Location.--Lat 40°24'30", long. 109°14 I 00", in SW^SE^ sec. 5, T. 5 S., R. 24 E., on right

 bank i mile below Cub Creek and Chew Ranch, 4 miles southeast of Dinosaur National 

Monument headquarters, 6i miles northeast of Jensen, and 12 miles upstream from Brush 

Creek.

Records available.--October 1903 to December 1904, June to August 1905 (gage heights only),

 March to September 1906, July 1914 to December 1915, October 1946 to September 1951. 

Prior to October 1946, published as "at Jensen," except October to December 1903, which 

was published as "near Vernal."

Gage.--Water-stage recorder. Altitude of gage is 4,760 ft (from river-profile map).

 Prior to Oct. 1, 1946, staff or chain gages at site 15 miles downstream at different 

da turns .

Average discharge.--6 years (1903-4, 1946-51), 5,277 cfs.

;mes.--Maximum discharge during year, 26,900 cfs June 

mm daily, 760 cfs Jan. 4-6.

1903-4, 1946-51: Maximum discharge observed, 32,100 cfs May 29, 1904 (gage height, 

L.80 ft, site and datum then in use); minimum observed, 236 cfs Dec. 6, 1904.

Extremes.--Maximum discharge during year, 26,900 cfs June 3 (gage height, 11.40 ft); minimuin daily, 760 cfs Jan. 4-6.

11.

Remarks. --Records excellent except those for periods of doubtful gage-height record, 

 wHTch are good, and periods of ice effect or no gage-height record, which are fair.

Discharge measurements generally made twice a month.

irrigation.

Diversions above station for

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Apr. 19 to May 6, July 29 to Aug. 29, Sept. 28-30)

1.5 

2.0 

3.0 

4.0

650

1,020

1,980

3,240

5.0

7.0

10.0

11.4

4,920

10,100

20,300

26,900

Discharge, in cubic feet per second, water year October 195o to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,700

1,730

1,730

1,720

1,720

1,730

1,730

1,720

1,710

1,700

1,690

1,690

1,700

1,690

1,680

1,670

1,650

1,620

1,610

1,610

1,610

1,610

1,600

1,580

1,580

1,550

1,530

1,550

1,540

1,560

1,580

51,090

1,648

101,300 i

Nov.

1,610

1,650

1,700

1,730

1,730

1,720

1,740

1,740

1,730

1,670

1,550

1,410

1,460

1,390

1,240

1.110

1,460

1,660

1,740

1,830

2,070

2,390

2.410

2,39O

2,340

2,290

2,290

2,160

2,000

1,940

54, 150

1,805

107,400

Dec.

1,940

1,920

1,780

1,660

1,600

1,380

1,160

1,010

940

1,170

1,420

1,530

1,970

2.130

2,070

1,950

1,810

1,700

1,610

1,450

1,540

1,700

1,430

1,240

1, 120

1,110

1,130

1,030

1,040

1,060

1,000

45,600

1,471

90,450

Jan.

860

800

770

760

760

760

770

790

810

850

880

840

1,OOO

1,080

1,150

1,220

1,280

1,310

1,350

1,400

1,450

1,450

1,450

1,450

1,500

1,500

1,450

1,400

1,350

1,300

1,200

35,040

1,130

69,500

Feb.

al, 100

al.OOO

al, 100

al., 200

al,300

1,400

1,500

1,550

1,620

1,700

1,770

1,850

1,940

2,020

2,100

2,000

1,920

1,950

1,950

1,9OO

1,880

1,890

1,860

1,950

1,900

1,870

1,910

1,890

_

-

48,020

1,715

95,250

Mar.

1,840

1,770

1,700

1,600

1,660

1,710

1,820

1,870

2,220

2,330

2,190

1,920

2,000

2,080

2,150

2,110

1,920

1,750

1,570

1,670

2,160

2,400

2,340

2,880

3,470

3,840

3,680

3,580

3,79O

4,140

3,890

74,050

2,389

146,900

Apr.

3,590

3,460

3^380

3,410

3,620

4,140

5,000

5,270

5,330

5,530

5,480

5,200

5,020

4,720

4,330

d4, 100

d4, 840

5,460

5,840

36,160

d6,940

d7,690

d8,450

8,190

7,490

d7,710

d8. 62Q

d8 500

<J8,270

d7,710

173,450

5,782

344, 000

May

7,970

8,330

8,560

7,910

6,810

6,180

6,370

8,020

9,380

10,400

10,500

dlO,20O

dlO,400

dll,300

dll,500

dll,800

dll,900

d!2,800

a!3,400

a!3, 600

a!4, OOO

al4, 400

a!5,400

16,600

17,600

18,200

18,600

19,100

20, 100

21,700

24,000

397,030

12,810

787,500

June

25,500

26,000

26,600

25,200

22,700

19,800

a!7,000

a!5,000

13, 800

13,000

12,600

12,10O

11,700

11.200

dll,200

d!2,200

al4,000

a!5, 500

d!7,000

18,800

20,100

21,300

21,100

20,60O

19,300

18,000

16,600

15,300

14,200

13,400

-

520,800

17,360

tl,033

July

12 . 400

12,100

dll,700

dll,400

dlO, 900

dlO, 300

dlO, 000

d9,530

d8,530

d9,380

d8,910

d8,560

8,190

7,910

7,990

7,690

6,880

6,210

5,860

5,660

5,770

5,950

6,540

7,170

7,990

7,550

6,990

6,250

5,660

5.590

6,400

252,960

8,160

501,700

Aug.

6,490

6,400

6,090

6,120

6,230

d6,910

d6,760

d6,990

d6,910

d6,180

d5,750

<J5,350

d4,980

d4,570

d4, 150

3,820

3,560

3,350

3,210

3,110

2,990

2,970

2,790

2,780

2,840

2,950

3,020

2,960

2,930

2,880

2,800

138,840

4,479

275,400

Sept.

2,670

2,580

2,800

3,060

3.100

2,820

2,610

2,460

2,340

2,190

2,O9O

2,050

1,970

1,890

1,820

1,780

1,760

1,750

1,730

1,690

1,660

1,600

1,570

1,560

1,530

1.490

1^500

1,540

1,570

1,530

-

60,710

2,024

120,400

Calendar year 1950: Max 23,800 Min 940 Mean 5,673 Ac-ft 4,107,000

Water year 1950-51: Max 26,600 Min 760 Mean 5,073 Ac-ft 3,673,000

cfs Peak (10.33 discharge ft). (base, 14.OOO cfs). June 3 (l p.m.) 26,900 cfs (11.40 ft); June 22 (4 p.m.) 21,600 

t Expressed in thousands.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for other Green River stations.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based on 

recorded graph.

Note.--Stage-discharge relation affected by ice Dec. 29 to Jan. 31, Feb. 6-20.
GREEN RIVER BASIN 213 

Brush Creek above cave, near Vernal, Utah

Location. --Lat 40°42', long. 109°35', in sec. 29, T. 1 S., R. 21 E., on right bank at road 

bridge a quarter of a mile downstream from Government Creek, 1 mile upstream from cave, 

and 17 j miles northwest of Vernal.

Records available. --April 1946 to September 1951.

Gage . --Water-stage recorder. Altitude of gage is about 8,500 ft.

Average discharge. --5 years, 11.1 cfs.

Extremes . --Maximum discharge during year, 124 cfs May 25 (gage height, 3.59 ft); minimum, 

not determined, occurred during period of no gage-height record.

1946-51: Maxim'jm discharge, 234 cfs May 8, 1947 (gage height, 4.22 ft); minimum re 

corded, 0.1 cfs Sept. 29, 30, 1947.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are poor. Oaks Park Canal diverts above station from Brush Creek to Ashley Creek 

basin. Flow regulated by Oaks Park Reservoir (capacity, 6,250 acre-ft). (See records 

for Oaks Park Canal, p. 220.)

Rating table, water year 195O-51, except 

(gage height, in feet, and discharge, in c

od of ice effect 

feet per second)

1.2 

1.7 

3.3 

7.3 110

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Oct.

3.4 373-

3.2

3.1

3.0

3.2

3.1

3.0

2.9

*3.0

2.9

2.9

2. 8

2.8

3.1

3.1

3.1

3.0

3.0

3.0

3.0

2.9

3.0

2.9

2.8

2.7

*2.8

2.6

2.4

2.2

1.9

90.1

2.91

AC-ftj 179

Nov.

1.6

TT5

.9

(*)

-

28.4

0.95

56

Dec.

0.8

(*)

24.8

0.8

49

Jan.

, 0.7

21.7

0.7

43

Feb.

0.8

-

-

-

22.4

0.8

44

Mar.

0.9

27.9

0.9

55

Apr.

(**)

1.0

30.0

1.0

6O

May

-.

1V 5.0

J (*)

12

12

21

32

30

24

23

24

38

46

59

67

63

*62

61

68

75

65

62

53

43

37

32

1,049.0

33.8

2,080

June

32 ?8

25

24

20

16

14

13

13

13

14

12

10

9.2

8.4

7.9

8.1

7.1

4.7

5.0

7.3

6.8

5.7

5.2

4.6

4.0

3.7

*3.3

3.1

3.0

-

331.1

11.0

657

July

3.0

2.8

2.7

2.3

2.3

2.1

2.0

7TT

5.9

4.8

5.0

6.0

6.2

4.3

5.6

5.6

7.0 ^

s'.9

5.9

7.0

6.5

5.3

5.6

6.3

6.3

6.0

6.0

5.6

5.3

5.6

153.2

4.94

304

Aug.

5.3

*TT9~

5.3

4.4

4.0

3.6

3,4

3.8

4.5

4.4

4.0

3.4

3.0

3.0

2.8

2.8

2.8

3.0

3.2

4.3

4.1

3.6

*3.8

3.8

3.1

2.9

2.8

2.8

3.1

3.5

2.8

112.2

3.62

223

Sept.

2.8

2.5

2.4

2.4

5.3

6.0

ZTT

2.6

2.6

2.6

2.5

2.6

2.5

2 . 5

2.4

2.4

2.4

2.4

2.7

2.8

2.8

2.6

2.7

2. '7

2.3

2.0 770"

2.1

2.2

2.3

-

80.5

2.68

160

Calendar year 1950: Max 127 Mln - Mean 12.9 Ac-ft 9,310

Water year 1950-51: Max 75 Min - Mean 5.40 Ac-ft 3,910

* Discharge measurement made on this day,

** Field estimate made on this day.

Note.--No gage-height record Nov. 3 to Apr. 10, Apr. 16 to May 6. Discharge estimated on basis of 

2 discharge measurements, an engineer's field estimate, weather records, and records for other stations on Brush Creek and nearby streams. Stage-discharge relation affected by ice Apr. 11-15.

256684 O - 53 - 15
GREEN RIVER BASIN

Brush Creek near Vernal, Utah

Location. Lat 40°35', long. 109°26', in NW^NE^ sec. 10, T. 3 S., R. 22 E., on left bank 

a miles upstream from Little Brush Creek and 10 miles northeast of Vernal.

Drainage area.--82 sq mi, approximately.

Gage.--Water-stage recorder.

Records available.--March 1939 to September 1951.

Average discharge.--12 years, 39.2 cfs.

Extremes.--Maximum discharge during year, 330 cfs July 28 (gage height, 4.19 ft); minimum, 

i.b cfs Mar. 12.

1939-51: Maximum discharge, 433 cfs June 23, 1947 (gage height, 5.08 ft), resulting 

when dam in fish pond upstream was blasted out, from rating curve extended above 250 

cfs; minimum recorded, that of Mar. 12, 1951.

, , - 

to Ashley Creek basin for irrigatio ee records for Oak Park Canal p. 220).

Rating table, water year 195O-51, except period of Ice effect

(gage height, In feet, and discharge, In c-ubic feet per second)

(Shifting-control method used Jan. 24 to May 7)

1.0 8.5

1.5 40

2.0 82

2.5 130

3.5 248

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

19

19

19

18

IS

18

18

18

18

19

*19

20 T9~

19

19

20

20

20

20

20

19

20

19

20

19

20

20

20

20

20

19

596

19.2

1,180

Nov.

19 T9-

19

18

18

19

18

*18

19

b!8

19

19

18

19

18

16

16

15

18

15

15

15

14

13 T3"

14

14

16

17

17

-

506

16.9

1,000

Dec.

18 18-

18

18

17

b!7

*16

1'6

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

15

IB

504

16.3

1,000

Jan.

b!4

b!4

b!4

b!4

b!4

b!5

b!6

b!6

*b!6

b!6

b!5

b!4

b!3

b!3

b!3

b!3

13

12

bTZ

b!2

bia

big

b!2

12

13

12

12

13

13

b!3

b!3

416

13.4

825

Feb.

b!3'

bT3"

b!3

b!3

b!3

13

13

14

*14

14

15 IB14

b!4

b!4

b!3

13

13

13

14

14

14

14

13

13

13

13

13

_

-

378

13.5

750

Mar.

13

13

12

T2

12

13

14

*14

14

14

14

b!4

13

13

13

13

IE

b!3

13

13

16

IB

13

13

14

15

16

15

14

14

13

420

13.5

833

Apr.

13

13

13

15

15

15

15

15

15

15

*15

14

14

14

15

16

17

18

18

19

19

19

18

19

20

21

20

20

22 2T

-

504

16.8

1,000

May

21

19

T5

19

20

23

36

46

37

35

*42

64

74

68

59

58

65

101

112

145

161

164

166

173

182

*193

198

200 *T57

190

172

3,059

98.7

6,070

June

160 T5B113

99

96

84

74

69

65

63

64

66

60

54

52

47

45

46

42

37

38

41

38

3P

3c

29

25

24

23

22

-

1,782

59.4

3,530

July

22

*22

21

21

21

20

19 T9"

21

32

32

34

33

31

31

30

30

27

24

23

23

24

21 >o

22

22

22

39

TT

25

24

782

25.2

1,550

Aug.

23 72"

23

*22

21

19

18

18

18

19

18

18

17

17

16

16

16

16

17

19

*19

18

20

17

16

15 IB15

16

16

15

555

17.9

1,100

Sept.

15

15

15

14

15

18

IS

14

14

14

14

15

15

15

14

14

14

12 T2-

13

13

13

13

13

14

13

12

12

12

13

-

416

13.9

825

Calendar year 1950: Max 260 Min - Mean 48.8 Ac-ft 35,350

Water year 1950-51: Max 200 Min 12 Mean 27.2 Ac-ft 19,660

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

Note. Doubtful gage-height record May 8-26; 

graph.

discharge computed from reconstructed gage-height
UREEN RIVER BASIN 

Little Bruan ureek below East Park Reservoir, near Vernal, Utah

215

Location. Lat 40°46', long. 109°32', in SW£ sec. 2, T. 1 S., R. 21 E., on right bank 

a miles downstream from East Park Reservoir and 20 miles north of Vernal.

Records available.--July 1949 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,650 ft (f:?om topographic map).

Extremes. Maximum discharge during year, 213 cfs May 27 (gage height, 3.58 ft); minimum, 

u.v cfs on several days in November and September, but probably was less during period 

of ice effect or no gage-height record.

1949-51: Maximum discharge, 409 cfs May 30, 1950 (gage height, 4.43 ft); minimum, 

that of November and September 1950.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicft are poor. Flow regulated by East Park Reservoir.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used)

0.8 

.9 

1.0 

1.2 

1.4

0.6

.8

1.5

4.8

10

1.7 

2.0 

2.5 

3.0 

3.5

113

186

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

 27T 2.1

1.9

1.9

1.6

1.4

1.4

1.4

*1.4

1.4

1.2

1.2

1.4

1.2

1.2

1.2

1.1

1.0

.9

.9

.9

.9

.9

.9

.9

.9

*.9

.9

.9

.8

TS

37.6

1.21

75

Nov.

0.8

4.0

1.0

.9

.9

.9

.9

' W

-

32.4

1.08

64

Dec.

0.9

27.9

0.9

55

Jan.

0.8

24.8

0.8

49

Feb.

0.9

_

_

-

25.2

0.9

50

Mar.

1.0

31.0

1.0

61

Apr.

1.0

1.5

-

35.0

1.17

69

May

15

(*)

42

50

64

79

91

86

88

92

109

130

146

169

166

141

115

96

1,889

60.9

3,750

June

86

7T

68

67

64

56

51

48

43

44

52

46

42

37

35

32

34

33

2928'

31

29

30

25

22

20

18

*17

16

21

1,192

39.7

2,360

July

14

13

13

12

11

11

10

19

45

44

42

41

40

39

38

36

31

26

25

25

25

24

22

20

19

17

14

5.0

3.8

3.3

*370

693.1

22.4

1,370

Aug.

6.2

6.0

772- 8.9

6.2

5.5

3.5

2.9

3.1

3.7

3.5

2.6

2.3

2.1

1.9

1.8

ITS

1.8

2.2

5.0

4.6

3.7

4.4

5.5

2.8

2.2

1.8

1.8

2.3

2.3

2.2

111.8

3.61

222

Sept.

1.8

T76

1.5

.4

.4

.2

.2

.2

.2

.1

1.1

1.1

.9

*.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.7

.8

.8

-

30.1

1.00

60

Calendar year 1950: Max 314 Win 0.8 Mean 19.9 Ac-ft 14,420

Water year 1950-51: Max 169 Min o.7 Mean 11.3 Ac-ft 8,180
216 GREEN RIVER BASIN

Little Brush Creek near Vernal, Utah

Lo cation.--Lat 40°43', long. 109°30', in SEij sec. 24, T. IS., R. 21 E., on right tank 

hair a mile upstream from cave, three-quarters of a mile upstream from Kane Hollow, 

and 17t miles north of Vernal.

Drainage area.--28 sq mi, approximately.

Records available.--October 1945 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 8,000 ft.

Average discharge.--6 years, 18.6 cfs.

Extremes.--Maximum discharge during year, 221 cfs May 27 (gage height, 2.93 ft); minimum 

U.I cfs Sept. 18. '

1945-51: Maximum discharge, 608 cfs May 30, 1950 (gage height, 3.71 ft); minimum, 

that of Sept. 18, 1951.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Flow regulated by East Park Reservoir. No diversions above station.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 11-20}

1.0 0

1.1 .3

1.2 1.0

1.3 2.5

1.4 5.0

1.5 

1.7 

2.0 

2.5 

3.0

9.0

21

51

128

256

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

T7B- 1.6

1.6

1.3

1.2

1.2

1.4

*1.3

1.4

1.4

1.3

1.4

1.6

1.4

1.6

1.6

1.3

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

38.8

1.25

77

Nov.

1.2

1.4

b2.0

bl.2

bl.l

*bl.3

bl.l

bl.3

bl.5

bl.5

bl.5

1.5

-

43.6

1.45

86

Dec.

(*)

1.4

43.4

1.4

86

N Jan.

1.0

31.0

1.0

61

Feb.

1.2

_

-

33.6

1.2

67

Mar.

1.4

43.4

1.4

86

Apr.

> I- 4

2.0

-

48.0

1.60

95

May

20

(*)

*43

44

53

70

84

115

112

105

119

132

142

161

150" 180

152

128

*105

2,205

71.1

4,370

June

95

8T

74

70

68

60

55

50

46

46

62

*51

43

39

35

32

34

35

30

27

34

33

34

28

24

21

19

17

16

14

-

1,274

42.5

2,530

July

14

13

12

11

11

10

10

14

51

BT

50

50

48

46

44

44

40

33

30

30

31

30

26

23

22

*19

17

5.4

2.5

271" 2.0

792.3

25.6

1,570

Aug.

6.2

5.4

9.0

BTZ

5.4

6.6

3.5

2.4

2.5

3.2

3.8

2.2

1.9

1.6

1.3

1.3

1.3

1.3

1.6

4.5

4.8

4.0

4.5

7.4

3.3

2.0

1.8

1.6

2.2

*3.8

2.4

111.0

3.58

220

Sept.

2.0

1.6

1.3

1.2

.9

.9

.8

.8

.6

.6

.5

.5

.4

.3

_JL

.2

.2

.2

1.4

1.3

1.3

1.2

1.2

.9

.9

.8

.8

.7

.7

.8

-

25.2

0.84

50

Calendar year 1950: Max 462 Mln - Mean 26.9 Ac-ft 19,480

Water year 1950-51: Max 180 Mln 0.2 Mean 12.8 Ac-ft 9,300

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 12 to May 14, July 24, 25; discharge estimated on basis or 2 discharge measurements, weather records, and records for other stations on Little Brush Creek and Brush 

Creek
GREEN RIVER BASIN

Brush Creek near Jensert, Utah

Location.--lat 40°24', long. 109°21', in SW£ sec. 4, T. 5 S., R 23 E., on left bank about 

a,000 ft above mouth and 2f miles north of Jensen.

Records available.--April 1939 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 4,730 ft (.from river-profile map). Prior 

fo Nov. 24, 1947, staff gages at same site at different datums.

Average discharge.--12 years, 23.5 cfs.

Extremes.--Maximum discharge during year, 156 cfs May 31 (gage height, 2.87 ft); no flow ' Sept. 30.

1939-51: Maximum discharge observed, 900 cfs Aug. 17, 1941 (gage height, 5.50 ft,

datum then in use), from rating curve extended above 250 cfs; no flow for many days in

some years.

Remarks.--Records fair except those fop periods of ice effect or doubtful or no gage-height 

record, which are poor. Many diversions above station for irrigation.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and- discharge, in cubic feet per second) 

(Shifting-control method used May 38 to June 6)

1.2

1.3

1.4

1.5

2.2 

2.5 

2 .0

108

222

2.1 1.9 22 

Discharge, In cubic reet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2.0

2.1

.6

* .2

.2

.4

.4

.1

.1

1.1

1.0

1.0

.3

170

1.0

1.0

2.1

3.0

4.2

1.7

1.7

1.6

*3.0

2.1

1.3

3.3

1.7

1.7

5.2

8.2

62.5

2.02

124

Nov.

2.8

3.0

2.8

1.7

1.6

1.6

1.4

T74

1.4

1.8

4.6

b!2

b!4

*14

14

15

17

IT

14

16

14

13

12

11

11

11

11

11

11

11

-

270.1

9.00

536

Dec.

11

T4

b!3

14

14

b!5

b!6

b!6

b!7

b!8

b!8

b!8

b!9

bT9

19

19

19

*18

17

17

16

16

16

16

~

 b!5

_

500

16.1

992

Jan.

*b!4

434

14

861

Feb.

(*)

b!5

_

_

-

420

15

833

Mar.

(»)

 b!6

16

17

17

16

15

15

13

17

11

3.3

1.3

1.3

.9

.6

.5

*.7

.8

.4

75

.5

323.8

10.4

642

Apr.

0.6

.5

.6

2.8

7

.4

.4

.2

.4

.4

.4

.2

.2

.2

.2

.2

.2

.4

d.7

d.7

d.6

d.6

*d.4

.5

.4

.6

.4

.4

.5

.4

-

15.2

0.51

30

May

0.4-

.4-

A

.5

73

.3'

-3>

.4

.(.,

.6

.7

. 9

3.3

3.0

.S

.7

.6

1.0

32

37

72

dllO

dlOS

d!06

*d!08

dl!6

d!24

d!30

d!32

d!34

d!36

1,360.3

43.9

2,700

June

dllO *a~9T

66

50

35

13

5.2

5.2

1.3

.3

.2

.3

.2

.3

.2

2

.2

.2

.1

.2

.2

.2

.1

.1

.2

.2

.2

.1

.1

.2

-

381.7

12.7

757

July

0.2

.1 

.1

**.!

.2

.1

.1

.1

.1

.2

.1

.1

.2

.3

.3

.3

.4

.4

.4

.6

.4

.3

.2

.3

.3

**.2

.2

.9

.4

.5

8.2

0.26

16

Aug.

0.4

.3

.3

.3

.3

.2

.2

.1

7T

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.9

1.3

8.2

3.5

a3.0

35.5

1.15

70

Sept.

. a2.0

- (»)

1.4

.6

.6

.5

.4

.2

.1

.1

.1

.2

.2

.1

.3

.4

.2

.1

0

-

31.5

1.05

62

Calendar year 1950: Max 212 Mln -0.9 Mean 30.5 Ac-ft 22,050

Water year 1950-51: Max 136 Mln 0 Mean 10.5 Ac-ft 7,620

* Discharge measurement made on this day.

** Field estimate made on this day.

a No gage-height record; discharge estimated on basis of records for other static 

and Little Brush Creek.

b Stage-discharge relation affected oy ice.

d Doubtful gage-height record; discharge computed from recorder graph.

is on Brush Creek
218 GREEN RIVER BASIN

Ashley Creek below Trout Creek, near Vernal, Utah

Location. Lat 40°44', long. 109°41', in NE£ sec. 16, T. 1 S. , R 20 E. , on right bank 1,000 

ft downstream from Trout Creek, 3 miles upstream from South Fork, and 21 miles northwest 

of Vernal.

Drainage area. 27 sq mi, approximately.

Records available. October 1943 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 9,200 ft (from topographic map).

Extremes. Maximum discharge during year, about 500 cfs May 27 or 28, occurred during period 

or no gage-height record; minimum not determined, occurred during period of no gageheight record.

1943-51: Maximum discharge, 630 cfs May 19, 1948; minimum, 1.2 cfs Feb. 24, 1950 

(discharge measurement), but may have been less during period of let effect or no gageheight record.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are poor. Flow slightly regulated by Long Park Reservoir. No diversions above 

station.

Revisions (water years). W 1059: 1945.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.3

1.4

1.5 

1.7

7.0

14

62

116

237

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

8$3(5'

31

Total

Mean

Ac- ft

Oct.

.7

.7

.9

.6

.4

.1

.5

.2

.1

* .1

.1

.1

.0

.0

.0

.0

.0

. 3

.1

.1

.1

.0

.0

.8

.0

.8

.7

.7

.a

.7

.6

126.7

4.09

251

Nov.

3.5

3.5

3.5

3.5

3.5

*3.4

3.3

3.1

2.9

2.5

2.7

2.9

3.0

3.0

3.1

3.1

3.0

3.1

3.1

3.2

3.2

3.2

3.1

3.1

3.1

3.2

3.1

3.0

3.0

3.0

-

93.9

3.13

186

Dec.

2.9

(*)

2.8

86.9

2.80

172

Jan.

2.5

77.5

2.5

154

Feb.

2.3

-

-

-

64.4

2.3

128

Mar.

2.1

65.1

2.1

129

Apr.

2.4

-

72.0

2.4

143

May

4.0

> 25

. 190

*222

178

2,400.0

77.4

4,760

June

140

T5T

82

91

91

*79

71

65

62

64

90

77

72

72

72

74

84

74

58

57

66

57

52

48

38

35

32

28

25

24

-

1,981

66.0

3,930

July

23

20.

20

18

18

16

16

15

15

14

14

14

13

16

30

34

28

*30

33

38

40

35

28

19

13

13

12

12

12

11

13

634

20.5

1,260

Aug.

14

14

20

19

16

14

12

12

13

16

14

11

10

9.7

9.1

8.8

8.8

9.7

14

32.

24

21

*18

27

16

14

13

14

18

20

16

478.1

15.4

948

Sept.

14

13

12

12

12

10

10

9.7

9.7

9.7

9.1

8.8

8.5

8.5

8.2

7.6

7.6

7.3

7.3

7.0

6.8

6.8

6.8

6.6

6.4

6.0

5.8

5.8

5.8

5.6

-

254.4

8.48

505

Calendar year 1950: Max 358 Mln - Mean 25.2 Ac-ft 18,240

Water year 1950-51: Max - Mln - Mean 17.4 Ac-ft 12,570

Peak discharge (base, 300 efs).--May 27 to 28 (time unknown), about 500 cfs. 

* Discharge measurement made on this day.
GREEN RIVER BASIN 219

South Fork Ashley Creek near Vernal, Utah

Location.--Lat 40°44', long. 109°42', in NEi sec. IV, T. 1 S., R. 20 E., on right bank at

 lower end of Hicks Park, 3-jj miles upstream from moutn,and 21 miles northwest of Vernal.

Drainage area. 20 sq mi, approximately.

Records available.--October 1943 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 9,400 ft (from topographic map).

Average discharge.--8 years, 20.V efs.

Extremes. Maximum discharge during year, 404 cfs May 27 (gage height, 3.54 ft); minimum 

not determined, occurred during period of no gage-height record.

1943-51: Maximum discharge, 460 cfs June 18, 1949 (gage height, 3.84 ft); minimum, 

0.8 cfs Feb. 23, 1950 (discharge measurement), but may have been less during periods of 

ice effect or no gage-height record.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 wnicn are poor. Flow slightly regulated at headwaters by TWin and Goose Lake Reservoirs (capacity, 500 acre-ft). No diversion above station.

Rating table, water year 1950-51, except period of ice effect 

(gage height, In feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 25-3:.)

1.4

1.5

1.6

1.7

3.2 

5.0 

8.0

2.0 33

2.3 67

2.8 157

3.4 315

October ]950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

4.8

5.0 4TB4.6

4.5

4.3

4.1

4.1

4.1

*3.9

3.7

3.6

3.7

3.7

3.7

3.9

3.6

3.7

3.6

3.6

3.4

3.4

3.4

3.7

3.6

3.2

3.1 ^n

3.2

3.2

3.2

117.5

3.79

233

Nov.

3.1

3.1

3.1

3.1

5.2

*3.1

3.0

2.8

2.6

2.0

2.4

2.5

2.7

2.7

2.8

2.8

2.8

2.8

2.8

2.9

2.9

2.9

2.8

2.8

2.8

2.8

2.8

2.8

2.7

2.7

-

84.3

2.81

167

Dec.

2.5

(*)

77.5

2.5

154

Jan.

2.2

68.2

2.2

135

Feb.

2.0

-

-

-

56.0

2.0

111

Mar.

1.8

55.8

1.8

111

Apr.

(**)

2.0

-

60.0

2.0

119

May

> 3.6

 24

90

197

241

277

288

*?%5

230

185

2,314

74.6

4,590

June

112

70

58

63

64

*56

66

68

67

59

66

70

102

122

124

130

T5T

105

90

93

90

70

63

57

54

52

48

45

42

37

-

2,277

75.9

4,520

July

35

3?

31

28

26

24

22

20

19

18

17

16

15

14

14

14

19

*16

13

16

24

22

14

13

TS

16

13

16

17

15

18

593

19.1

1,180

Aug.

16

20

~Z5 47

42

38

31

27

23

24

22

17

16

14

13

12

T?

14

18

32

29

30

*28

42

24

21

19

23

32

33

26

790

25.5

1,570

Sept.

23

^

20

19

17

16

16

15

14

13

12

12

12

11

10

10

10

10

9.6

8.8

8.4

8.0

8.0

7.7

7.4

6.8

77T

7.1

7.4

7.1

355.4

11.8

705

Calendar year 1950: Max 264 Min - Mean 23.4 Ac-ft 16,970

Water year 1950-51: Max 288 Min - Mean 18.8 Ac-ft 13,600

Peak discharge (base, 200 fs).--May 27 (7 p.m.) 404 cfa (3.54 ft].

Discharge measurement made on this day. 

** Field estimate estimate made on this day.

Note.--Stage-discharge relation affected by ice Oct. 28 to Nov. 15 and during much of period of no 

gage-height record during winter months. No gage-height record Nov. 14 to May 24, Aug. 5*8; discharge estimated on basis of 1 discharge measurement and a field estimate of flow, weather records, 

and records for stations on nearby streams.
220 GREEN RIVER BASIN

Oaks Park Canal near Vernal, Utah

Location.--Lat 40°44', long. 109°38', in SE^ sec. 12, T. IS., R. 20 E., on right bank 

1,OUU ft downstream from Oaks Park dam and 200 ft downstream from point of diversion 

from Brush Creek.

Records available. April 1946 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 9,200 ft (from topographic map).

Average discharge.--5 years, 6.94 cfs.

Extremes.--Maximum discharge during year, 64 cfs July 24 (gage height, 5.40 ft); no flow 

Nov.3 to July 9.

1946-51: Maximum discharge, that of July 24, 1951; no flow at times.

Remarks.--Records excellent. Canal diverts,from Brush Creek, water which has been stored 

in Oaks Park Reservoir (capacity, 6,250 acre-ft) for irrigation in Ashley Creek basin.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

9.7

9.7

9.7

9.7

9.5

9.5

9.5

*9.5

10

9.7

9.7

9.5

11

15

15

15

15

15

15

16

IS

16

15

14

14

14

14

11

10

10

376.7

12.2

747

Nov.

9.1

3.0

00"

0

0

o

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

0

0

-

12.1

0.40

24

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

July

0

u

o

0

0

o

o

0

0

23

33

37

53

57

57

57

57

*56

56

56

56

55

55

58

6JL

56

*5S

47

45

46

49

1,125

36.3

2,230

Aug.

36

*25

22

22

22

14

10

21

16

16

20

21

21

21

21

21

22

22

21

21

21

21

*21

21

20

12

6.4

674

6.4

6.4

6.4

563.0

18.2

1,120

Sept.

6.2 672"

6.2

6.2

6.4

b.4

6.7

8.5

8.7

8.7

8.7

8.9

8.9

8.9

8.9

8.9

8.9

9.8

14

U>

15

15

15

15

9.9

7.9

11

11

12

12

-

294.9

9.83

585

Calendar year 1950: Max 55 Min 0 Mean 7.15 Ac-ft 5,170

Water year 1950-51: Max 61 Min 0 Mean 6.50 Ac-ft 4,710

Discharge measureme ade on this day.
GREEK RIVER BASIN '"-L 

Ashley Creek near Vernal, Utah

Location. Lat 40°34 I 50", long. 109°37'20", in SEir sec. 1, T. 3 S., R. 20 E., on left bank 

three-quarters of a mile upstream from head of Utah Power & Light Co.'s canal, 4| miles 

upstream from Dry Fork, and 10 miles northwest of Vernal.

Drainage area.--101 sq mi.

Records available.--October 1911 to September 1951 (October 1911 to September 1914, fragmentary).

Gage. Water-stage recorder. Altitude of gage is 6,250 ft (^rom river-profile map). Prior 

to June 6, 1914, staff gages at site l| miles downstream at different datums. June 6, 

1914, to Nov. 13, 1917, staff gage or water-stage recorder at site about a quarter of a 

mile downstream at different datums.

Average discharge.--35 years (1914-16, 1918-51), 104 cfs.

Extremes.--Maximum discharge during year, 1,070 cfs May 25 (gage height, 3.14 ft); minimum, 

15 cfs Apr. 11.

1911-51: Maximum discharge, 2,050 cfs May 29, 1921; minimum, 14 cfs Apr. 2, 1949.

Remarks.--Records good. Flow is increased by water released from Oaks Park Reservoir (capacity, 6,250 acre-ft) on Brush Creek and diverted to Ashley Creek basin for irrigation 

(see p. 220). City of Vernal pipe line (capacity, approximately 5 cfs) diverts water 

from tributary spring 1,000 ft above station (diversion began Aug. 1, 1941). At times, 

part of this flow is returned to Ashley Creek half a mile below station.

Rating table, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

16 1.3 163

32 1.8 338

62 2.6 745

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

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.

59

*57

59

57

55

54

52

52

52

52

50

52

52

50

55

57

57

55

55

54

55

54

54

54

*52

54

52

50

52

48

il

1,658

53.5

3,290

Nov.

45

44

37

36

37

37

37

36

36

31

29

32

35

33

33

32

33

33

35

33

*33

33

32

31

32

31

31

31

30

31

1,019

34.0

2,020

Dec.

31

28

26

30

30

28

30

30

30

29

29

30

30

30

30

29

29

28

*30

30

26

26

26

28

28

28

27

27

27

27

28

893

28.8

1,770

Jan.

27

27

28

27

26

27

27

27

27

27

27

*26

26

26

25

26

25

25

25

25

26

26

26

25

25

24

24

23

23

23

*22_

795

25.6

1,580

Feb.

22

22

22

22

22

22

22

22

22

21

21

21

20

20

21

20

20

20

20

20

20

20

20

19

19

20

20

20

_

-

580

20.7

1,150

Mar.

20

20

20

19

*20

20

20

20

19

19

19

19

18

19

19

20

18

16

17

17

17

19

19

18

19

19

19

*17

17

17

17

579

18.7

1,150

Apr.

17

16

17

20

18

17

18

17

17

17

16

16

17

20

19

19

20

20

21

21

22

21

21

22

22

*22

23

23

25

26_

590

19.7

1,170

May

24

ZZ

ZZ

24

25

30

40

45

48

52

60

110

118

120

115

112

137

18i3

2513

376

346

406

442

*62-3

636

66L

703

*745

620

519

406

8,043

253

15,950

June

342

258

220

217

224

204

197

186

182

185

201

204

214

241

236

252

252

241

204

194

217

197

182

169

160

154

148

143

*137

154

6,099

203

12,100

July

131

126

123

120

115

110

107

105

102

112

129

129

140

146

163

157

157

151

146

151

154

163

146

140

134

134

129

126

126

126

129

4,127

133

8,190

Aug.

*123

110

126

137

115

105

97

102

100

102

102

97

95

93

90

86

88

90

95

123

120

112

110

137

110

100

90

90

102

115

102

3,266

105

6,480

Sept.

95

93

90

88

85

83

85

85

85

85

85

*83

81

79

79

79

79

77

79

61

79

79

79

77

72

*64

64

66

68

62

-

2,386

79.5

4,730

Calendar year 1950: Max 676 Min 22 Mean 120 Ao-ft 87,060

Water year 1950-51: Max 745 Min 16 Mean 82.5 Ac-ft 59,580

Peak discharge (base, 600 cfs). --May 25 (7:30 p.m.) 1,070 cfs (3.L4 ft).

Discharge easurement made on this day.
^ GREEN RIVER BASIN

Dry Fork above sinks, near Dry Fork, Utah

Location. Lat 40°38', long. 109°49', in sec. 20, T. 2 S., R. 19 E. (unsurveyed), on left 

bank 9 miles northwest of Dry Fork and 14 miles upstream from mouth.

Drainage area.--48 sq mi, approximately.

Records available.--March 1939 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 8,050 ft (from topographic map).

Average discharge.--12 years, 40.6 cfs.

Extremes.--Maximum discharge during year, 817 cfs May 27 (gage height, 4.65 ft); no flow 

for part of each day Apr. 22, May 1-3, caused by temporary storage behind ice jam upstream.

1939-51: Maximum discharge, 880 cfs June 18, 1949 (gage height, 4.85 ft), from 

rating curve extended above 330 cfs on basis of slope-area determination of peak flow; 

no flow for part of each day Apr. 22, May 1-3, 1951.

Remarks.--Records gooa except those for periods of ise effect or no gage-height record, 

wnich are fair,

Rating tables, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to June 14 June 15 to Sept. 3O

1.2 

1.4 

1.6 

1.8

1.4

3.0

5.8

10

2.1 

2.4 

2.7

3.0

3.5 

4.0 

4.5 

4.9

223

398

644

900

1.9 

2.2 

2.5 

3.0 

3.5

145

279

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

U

*13

14

13

13

13

12

12

12

12

11

11

11

11

11

10

10

10

9.7

9.2

9.5

9.5

8.9

57?

9.2

10

9.7

*9.2

350.1

11.3

694

Nov.

9.2

9.5

7.7

11

8.2

1C

9.2

9.5 ...

> 8.0

J

 V

1

1> 8.0

I

J

 7.O

(*)

-

238.7

7.96

473

Dec-.

6.5

(*)

201.5

6.5

400

Jan.

6.0

(*)

186.0

6.0

369

Feb.

5.0

_

_

-

140.0

5.0

278

Mar.

4.0

(*)

124.0

4.0

246

Apr.

3.0

6.6

2.5

2.0

2.4

2.3

2.7

3.4

3.5

3.5

4.1

3.8

4.4

4.8

5.0

-

99.0

3.30

196

May

4.1

*3.8 4T3"

5.5

5.8

7.9

14

14

10

8.4

12

19

18

18

16

June

256

172

*99

86

92

89

92

99

Ii8

110

105

117

159

232

*266

15

± c,

21

26

41

47

61

88

113

184

*278

464

650

SET

*497

382

3,609.8

116

7,160

272 24"9~

217

186

181

184

143

123

109

102

95

86

76

69

64

-

4,248

142

8,430

July

60S3"

48

44

41

37

34

32

29

29

28

27

26

26

25

25

32

34

27

*29

41

35

29

26

25

26

25

24

2T

27

25

996

32.1

1,980

Aug.

31

44

1O7

137 TOC"

76

65

60

54

50

48

39

34

32

30

29

28

7?

35

68

76

*81

71

104

71

60

49

48

72

93

68

1,889

60.9

3,750

Sept.

60

53

44

41

38

35

33

31

30

29

27

27

26

26

25

24

24

24

24

23

23

22

22

21

21

202D~

20

21

20

-

854

28.5

1,690

Calendar year 1950: Max 572 Min - Mean 44.6 Ac-ft 32,320

Water year 1950-51: Max 650 Min - Mean 35.4 Ac-ft 25,700

?eak discharge (base, 300 efs).--May 27 (7:30 p.m.) 817 cfs (4.65 ft); June 15 (10:30 p.m.) 344 

cfs (3.68 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10-13, Nov. 19-30. No gage-height record 

Nov. 14-18, Dec. 1 to Apr. 16 (stage-discharge relation affected by ice during most of period); discharge estimated on basis of 3 discharge measurements, weather records, and records for station on 

North Pork of Dry Fork near Dry Pork.
GREEN RIVER BASIN 223

North Fork of Dry Fork near Dry Fork, Utah

Location.--Lat 40°38', long. 109°48', in sec. 17, T. 2 S., R. 19 E., on left bank 2 miles 

upstream from mouth and 9j miles northwest of town of Dry Fork.

Drainage area.--12 sq ml, approximately.

Records available.--April 1946 to September 1951.

Gage, Water-stage recorder. Altitude of gage is S.,000 ft (from topographic map).

Average discharge.--5 years, 7.07 ofs.

Extremes. Maximum discharge during year, 101 cfs May 27 (gage height, 3.26 ft); minimum 

daily, 0.2 cfs Apr. 2-10, 12, but may have been less during period of ice effect or no 

gage-height record.

1946-51: Maximum discharge, 136 cfs May 7, 1947 (gage height, 3.60 ft); minimum 

daily recorded, that of Apr. 2-10, 12, 1951.

Remarks. Records good except those for periods of Ice effect or no gage-height record, 

which are fair. No diversion above station.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in fee", and discharge, in cubic feet per second)

Oct. 1 to May 29 May SO to Sept. 3O

1.5

1.6

1.7

1.8

1.9

0.1 

.3

1.9 

3.5

2.0 

2.2 

2.4 

2.8 

3.0

5.6

11

73

1.9

2.0

0.7 

1.6 

2.7 

4.3

2.1 

2.3 

2.6 

2.9

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.0

1.9

1.9

2.2 *2-7?

1.9

1.9

2.0

2.0

2.0

2.0

2.0

1.9

2.0

2.0

2.0

1.5

1.5

1.3 T73"

1.3

1.3

1.3

1.3

1.4

1.3

1.3

1.5

1.5

1.4

*1.4

52.5

1.69

104

Nov.

1.3

1.3

1.2

1.4 TTS"

1.4

1.4

1.4

1.2

1.0

1.1

1.2

1.2

1.2

1.3

1.3

1.2

1.1

1.1

.8

.8

.7

7T

.9

.9

.9

.9

*.9

.9

.9

-

32.9

1.10

65

Dec.

I 0.9

.8

(*)

25.3

0.82

50

Jan.

0.7

21.7

0.7

43

Feb.

0.5

.

_

-

14.0

0.5

28

Mar.

 0.4

(*)

.4

.4

.4

.4

.4

.3

.4

.4

.3

.3

12.1

0'.39

24

Apr.

0.3

.272"

.2

.2

.2

.2

.2

.2

.2

.3

.2

.3

.4

.4

.5

.5

.4

.4

.7

.6

.6

.7

.9

.8

.9

.9

1.0

T70~ 1.4

-

15.0

0.50

30

May

*1.0

Tnr

i!z:

i.;.

1.9

3.£i 4!''

4 .3 s!s

s.:;

4.7

7.4

6.13

6.15

5.4

5.L

6.5

9.2

13

21

24

27

30

36

50

*66

6955-

55

*49

41

623.2

20.1

1,240

June

33

28

25

24

23

21

18

17

16

16

15

14

13

15

*18

18

17

16

16

15

15

14

13

12

11

11

10

9.5

9.2

STF

-

492.2

16.4

976

July

9.2

878

8.5

8.2

7.9

7.9

7.6

7.2

6.9

6.9

6.6

6.6

6.4

5.9

5.9

5.7 B72-

9.2

8.5

*9.2

9.H

8.2

7.6

6.9

6.9

6.6

6.4

6.1

6.1

5.7

5.7

226.7

7.31

450

Aug.

5.4

ITT

11

T. 2

7.6

6.4

6.4

6.9

7.2

7.6

7.2

7.2

6.9

6.9

6.9

6.9

6.9

6.9

6.9

8.2

7.6

*7.2

6.9

8.2

6.6

6.1

6.4

6.6

7.9

8.5

7.6

224.3

7.24

445

Sept.

6.9 676-

6.6

6.1

5.9

5.2

4.1

3.8

3.7

3.3

2.9

2.7

2.6

2.4

2.3

2.2

2.0

1.9

1.9

1.7

1.5

1.4

1.3

1.2

1.1

1.1

1.1

1.1

i.l

1.1

-

86.8

2.89

172

Calendar year 1950 : Max 76 Mln - Mean 8.34 Ac-ft 6,03O

Water year 1950-51 : Max 69 Min - Mean 5.0O Ac-ft 3,630

Peak discharge (base, 70 efs). May 27 (6 p.m.) 101 cfs (3.26 ft).
224 OREEN RIVER BASIN

East Pork of Dry Pork near Dry Pork, Utah

Location. Lat 40°39', long. 109°46 1 , in sec. 14, T. 23., R. 19 E. (unsurveyed), on right 

bank 3% miles upstream from mouth and 8 miles northwest of town of Dry Fork.

Drainage area.--12 sq mi, approximately.

Records available.--April 1945 to September 1951.

G-age.--Water-stage recorder. Altitude of gage is 8,200 ft (from topographic map).

Average discharge.--5 years, 10.1 cfs.

Extremes.--Maximum discharge during year, 139 cfs May 28 (gage height, 3.55 ft); no flow 

 Nov.' 10 to May 16.

1946-51: Maximum discharge, 240 cfs June 18, 1949 (gage height, 4.27 ft), from

rating curve extended above 100 cfs on basis of slope-area determination of peak flow;

no flow at times.

Remarks.--Records good except those for periods of ice effect, backwater, or no gageheight record, which are fair. No diversion above station.

Rating tables, water year 1950-51, except period of ice effect

or backwater from debris (gage height, in feet,

and discharge, in cubic feet per second)

Oct. 1 to May 16 May 17 to Sept. 30

1.6

1.7

0.5 

.6

1.8 0.6

1.9 .8

2.0 1.7

2.1 3.2

2.2 5.1

2.4 

2.6 

2.9 

3.2 

3.6

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

V aO.7

1 (*)

.6

.6

.7

.7

.7

.7

.8

7F

.7

.7

.7

.6

.6

.6

.6

.6

.6

TS" .5

.5

.5

.5

.5

.5

.5

*.5

19.3

0.62

38

Nov.

 bO.3

0

0

0

0

o

0

0

0

0

0

0

o

o

0

0

0

0

0

0

0

0

-

2.7

0.09

5.4

Dec.

(*)

0

0

0

Jan.

O

0

0

Feb.

0

O

0

Mar.

(*)

0

0

0

Apr.

(*)

-

0

0

0

May

*06-

0

0

0

0

0

0

o

0

o

0

0

0

0

*0

0

.7

1.7

4.3

5.4

6.1

8.8

13

34

*69

98

114 TOE"

98

86

647.0

20.9

1,280

June

62

4T

35

32

30

30

32

33

30

28

28

32

41

44

*45

52

52

46

44

46

51

44

39

32

30

28

26

25

23

51

1,105

36.8

2,190

July

21

2TT

18

17

17

15

14

14

14

13

11

10

8.8

7.6

7.1

6.8

11

7.6

6.4

7.1

7.9

8.2

6.6

5.6

5.4

*4.9

4.7

4.3

4.5

4.2

4.5

307.2

9.91

609

Aug.

4.5

4.9

6.4

5.8

4.5

3.8

3.8

4.3

4.5

a4.6

a4.6

c4.4

c4.2

c4.0

C3.8

C3.7

C3.6

C3.6

C3.9

5.6

5.1

*4.9

5.4

6.4

3.8

3.4

3TT

3.4

5.8

7.4

STT

142.9

4.61

283

Sept,

4.7

4 '.3

4.2

4.2

4.2

4.2

4.2

4.0

3.8

3.8

4.0

4.0

3.6

3.6

3.4

3.4

3.2

3.2

3.0

2.9

2.9

2.6

2.4

2.4

2.4

2.4

2.4

2.4

2.2

-

102.3

3.41

203

Calendar year 195O: Max 141 Mln - Mean 11.6 Ac -ft 8,410

Water year 1950-51: Max 114 Mln - Mean 6.37 Ac-"t 4,610

Peak discharge (base, 100 efs).--May 28 (6 p.m.) 139 cfs (3.65 ft 

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basi 

mouth, near Dry Fork, and for other stations on nearby 

b Stage-discharge relation affected by ice. 

c Backwater from debris.

of records for East Fork of Dry Fork at 

treams.
GREEN RIVER BASIN 225

East Fork of Dry Fork at mouth, near Dry Fork, Utah

Location.--Lat 40°38', long. 109°46', In NW^r sec. 23, T. 2 S, , R. 19 E. Salt Lake meridian, 

on right bank about 1-f miles upstream from mouth and about 8| miles northwest of town 

of Dry Fork.

Records available.--July 1949 to September 1951.

Sage.--Water-stage recorder. Altitude of gage is 7,700 ft (from topographic map).

Extremes.--Maximum discharge during year, 147 cfs May 27 (gage height, 3.14 ft); no flow 

 Mov. 9 to May 18.

1949-51: Maximum discharge, 162 cfs June 1, 1950 (gage height, 3.31 ft), from rating 

curve extended above 80 cfs by logarithmic plotting; no flow at times each year.

Remarks.--Records good. No diversions above station.

Rating table, water year 1950-51.(gage height, in feet, 

and discharge, in cubic feet per second)

0.9

1.0

1.1

1.2

1.3

.4

.8

1.9

1.4 

1.7 

2.0 

2.4 

3.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 ~TZ~

.2

.1 **TT

.1.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.2

1

.1

.1

.2

.1

**.!

5.0

0.16

9.9

Nov.

0.1

.2

TT

.1

.1

.1

.1

.2

00"

0

0

0

0

0

o

0

0

0

o

0

o

0

0

0

0

o

0

0

0

-

1.0

0.03

2.0

Dec.

(*)

0

0

o

Jan.

0

O

0

Feb.

_

_

-

0

0

0

Mar.

(*)

0

0

o

Apr.

(*)

-

0

0

0

May

*c

r

0

0

0

o

0

0

0

0

0

0

o

0

o

*o

0

0

.1

2.9

3.1

3 .9

3.2

6.6

28

*39

103

119

TTT

*112

96

631.8

20.4

1,250

June

71

±5

38

35

32

31

33

33

30

28

28

32

39

42

*45

51

51

48

45

47

51

45

38

33

30

28

26

24

22

21

-

1,125

37.5

2,230

July

19

IT

17

15

14

14

13

12

11

10

LO

9.1

8.5

7.5

6.9

6.7

9.1

6.2

4.5

4.8

5.9

6.4

4.3

3.6

3.2

*2.9

2.5

2.0

2.2

1.9

277

252.9

8.16

502

Aug.

2.7

2.9

5.2

4.5

3.1

2.2

2.2

2.7

3.1

3.4

3.4

3.1

2.9

2.7

2.5

2.2

2.0

2.2

2.4

3.8

3.4

*2.9

*3.4

4.5

2.4

1.9

1.7 T79-

*3.8

5.4 375"

94.1

3.04

187

Sept.

3.1

27T

2.4

2.2

2.2

2.2

2.4

2.0

2.2

2.2

2.2

2.2

2.2

1.9

1.7

1.7

1.6

1.6

1.4

1.3

1.3

1.3

1.1

1.0

1.0

1.0

1.0

1.0

.979~

-

51.9

1.73

103

Calendar year 1950 : Max 119 Mln 0 Mean 9.87 Ae-ft 7,130

Water year 1950-51: Max 119 Mln o Mean 5.92 A = -ft 4,280

Peak discharge (base, 100 cfs).--May 27 (7:30 p.m.) 147 cfs (3.14 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.
"b GREEN RIVER BASIN

Ashley Creek at Sign of the Maine, near Vernal, Utah

Location.--Lat 40°31', long. 109°36', in NE^ sec. 31, T. 3 S., R. 21 E., on left bank 

three-quarters of a mile downstream from Dry Fork and 4f miles northwest of Vernal.

Records available.--March 1900 to December 1904 (fragmentary), June 1939 to September 

I9bl.Published as "near Vernal" 1900-1904 (also monthly summaries for this period 

published in Water-Supply Paper 618).

Gage.--Water-stage recorder. Altitude of gage is 5,750 ft (from topographic map). Mar. 5, 

T900, to Dec. 31, 1904, staff gages at sites about a quarter of a mile upstream at different daturas.

Average discharge.--16 years (1900-1904, 1939-51), 136 cfs.

Extremes.--Maximum discharge during year, 1,710 cfs May 28 (gage height, 4.90 ft); minimum, 17 cfs Apr. 26.

1939-51: Maximum discharge, 2,650 cfs July 21, 1945 (gage height, 5.40 ft), from 

rating curve extended above 1,500 cfs; minimum recorded, 14 cfs Feb. 26, 1949.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow increased by water released from Oaks Park Reservoir (capacity, 

6,250 acre-ft) on Brush Creek and diverted to Ashley Creek basin for irrigation (see 

p. 220). Diversions abo\?e station for irrigation and municipal water supply.

Rating tables, water year 1950-51, ex 

(gage height, in feet, and discharge,

;pt

(Shifting-control 

Oct. 1 to June 28

effect 

et per second)

 thod used June 2-30)

me 29 to Sept. 30

0.8 19

1.0 28

1.3 55

1.8 142

2.6 342

3.5 713

4.5 1,390

1.7 51

2.0 93

2.5 187

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

21

28

29

30

31

Total

Mean

Ac- ft

Oct.

58

*BT

55

54

53

51

50

50

484^5

48

50

50

51

53

56

56

55

55

54

56

55

54

55

*54

52

51

51

52

48

48

1,627

52.5

3,230

Nov.

45

47

37

36

38

37

37

36

37

32

30

37

37

39

39

37

37

39

43

40

*39

38

38

38

37

37

37

36

35

35

-

1,122

37.4

2,230

Dec.

36

37

32

35

35

33

34

34

34

33

33

33

34

33

34

33

33

33

*33

33

33

32

32

32

32

32

32

31

3T

31

32

1,023

33.0

2,030

Jan.

31

3T

31

31

31

31

30

30

30

30

30

*30

30

30

30

30

30

30

28

28

28

28

28

29

28

28

28

27

26

26

25

903

29.1

1,790

Feb.

23

tt

24

25

25

25

25

25

*25

25

25

25

25

25

25

25

25

25

25

25

25

25

25

25

25

25

26

V5

_

-

698

24.9

1,380

Mar.

26

27 57

26

*26

26

27

27

26

25

24

24

25

24

25

25

23

24

24

24

25

25

25

24

24

24

24

*22 57

22

22

764

24.6

1,520

Apr.

22

22

23

24

24

22

22

22

22

22

22

21

2T

22

22

22

23

23

22

23

23

22

22

22

*22

22

23

23

24

25

-

674

22.5

1,340

May

24

23

22

2¥

24

27

33

36

40

41

43

80

94

103

96

94

109

199

260

384

361

391

467

*494

622

832

1,060

*1,360

1,360

1,230

1,010

10,943

353

21,710

June

785

5S?

467

419

415

377

361

339

345

345

352

361

374

455

502

532

519

474

394

364

401

355

304

268

242

222

210

187

*176

161

-

11,268

376

22,350

July

143

*128

121

116

111

106

99

96

92

9T

107

107

116

123

134

136

141

139

136

141

147

155

T77

130

121

124

118

114

111

109

112

3,766

121

7,470

Aug.

116

 101

114

143

T55

116

103

101

99

101

103

99

92

88

86

84

32

81

M

111

114

107

112

136

118

106

93

90

103

123

111

3,253

105

6,450

Sept.

103 ~95

92

90

81

75

75

75

75

75

74

74

72

 71

71

71

70

68

71

71

71

70

70

68

65

59

58

B¥

59

58

-

2,189

73.0

4,340

Calendar year 1950: Max 1,550 Mln 28 Mean 162 Ac-ft 117,200

Water year 1950-51: Max 1,360 Win 21 Mean 105 Ac-ft 75,840

Peak discharge (base, 800 cfs). --May 23 (11 p.m.) 1,710 cfs (4.90 ft).

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Jan. 2, 13, 14, 20, 21, Jan. 26 to Feb. 25. 

gage-height record Dec. 21-26 and Jan. 6-12; discharge estimated on basis of 1 discharge meas 

weather records, and records for other stations on Ashley Creek.
GREEN RIVER BASIN 227 

Ashley Creek near Jensen, Utah

Location. Lat 40°22', long. 109°£5', in NE^ sec. 23, T. 5 S. , H. 22 E., on right bank

 immediately downstream from bridge on U. S. Highway 40, 3 miles upstream from mouth,and 

3 miles west of Jensen.

Drainage area.--386 sq mi.

Records available .--October 1946 to September 19E 1

Gage.--Water-stage recorder. Datum of gae-e is 4,795.36 ft above mean sea level, datum of

Average discharge .--5 years, 79.4 cfs.

Extremes.--Maximum discharge during year, 1,130 cfs May 29 (gage height, 4.35 ft); minimum,

 a.l cfs Aug. 19.

1946-51: Maximum discharge, 1,500 cfs May 31, 1950; minimum recorded, 1.5 cfs 

Sept. 8, 9, 1948.

Remarks.--Records good except those for periods of ice effect or doubtful gage-height rec-

 ora, which are fair. Flow increased by water released from Oaks Park Reservoir (capacity, 6,250 acre-ft) on Brush Creek and diverted to Ashley Creek basin for irrigation. Union Canal is only diversion between gage and mouth of Creek.

Rating table, water year 1950-51, except period of Ice effect

(gage height, In feet, and discharge, in cubic feet per second)

(Shifting-control method used June 20 to July 10)

1 .1 

1 .3

2.5 242

3.0 410

4.0 S10

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

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-ftj

Oct.

33

38

41

*42

40

38

38

40

38

37

35

32

30

29

28

27

3(3

32

28

31

32

33

36

36

36

37

40

42

4536-

29

1,089

35.1

2,160

Nov.

*32

35

40

37

37

40

40

36

30

30

41

43

46

49

52

49

49

50

65 35

50

47

47

45

45

45

44

43

43

44

1,310

43.7

Dec.

45

aT7

a50

*52

51

46

53

53

52

52

52

51

51

51

52

55

55

*50

52

52

52

52

50

50

51

51

49

55

56

53

52

1,595

51.5

2,600 3,160

Jan.

49

(»)

45

1,399

45.1

2,770

Feb.

1 -

1

1 ( *'

> 50

43

43

41

40

41

40

36

38

42

42

_

_

-

1,281

45.8

2,540

Mar.

42

*44

44

41

45

44

49

45

45

43

36

34

35

36

36

34

28

26

29

28

23

27

24

24

24

24

*20

19

18

T5

18

1,009

32.5

2,000

Apr.

19

T7

16

17

IB

17

16

14

13

11

11

11

11

11

10

9.4

8.9

8.9

9.4

7.2

10

11

*9.4

5.0

BT5

12

13

9.4

10

11

355.5

11.8

705

May

9.1

6.7

6.7

6.2

4.2

3.2

4.0

2.8

375

4.2

4.2

3.8

4.0

5.0

5.6

6.2

5.0

4.2

3.5

23

22

16

50

20

*96

200

422

770

801 6~8"0"

698

3,893.4

125

7,7!!0

June

*375

301

118

77

55

53

55

56

52

62

81

86

76

81

80

87

92

96

77

56

78

110

98

96

84

71

*58

*53

46

_37

-

2,747

91.6

5,450

July

35

24

15

15

11

10

8.4

7.2

6.2

6.2

7.8

6.7

8.4

6.7

5.0

4.2

5.6

4.2

3.5

3T3

6.2-

5.6

7.2

5.6

6.7

4.5

*4.5

4.5

8.9

6.7

4.5

258.8

8.35

513

Aug.

3.5

4.2

3.8

3.2

4.2

4.2

4.2

4.5

5.0

4.5

5.0

5.6

4.2

4.0

4.0

4.2

4.5

3.8

3T~2.8

16

7.8

40

25

18

21

21

19

24

31

*26

369.2

11.9

732

Sept.

24

28

25

26

25

20

16

13

11

TZ

12

13

13

14

16

16

18

16

16

16

18

20

21

21

22

20

20

20

23

23

-

558

18.6

1,110

Calendar year 1950: Max 1,190 Min 4.0 Mean 104 Ac-ft 75,670

Water year 1950-51: Max 801 Mln 2.8 Mean 43.5 Ac-ft 31,460

* Discharge measurement made on this day. 

a No gage-height record; discharge interpolated. 

Note. Stage-discharge relation affected ty ice Jan. 2 to Pec 

Oct. 14-31; discharge computed from recorder graph.

Doubtful gage-height record
228 GREEN RIVER BASIN

Duchesne River at Provo River Trail, near Hanna, Utah

Location. --Lat 40°37', long. 110°54 I , in SE^ sec. 27, T. 3 N. , R. 9 W. Uinta meridian, on 

right bank 400 ft downstream from Provo River Trail, 7 miles upstream from Hades Creek, 

and 12 miles northwest of Hanna.

Drainage area. 39 sq mi, approximately.

Records available . July 1929 to September 1933 (published as North Fork Duchesne River), 

October 1935 to September 1943, October 1944 to September 1951.

Gage . --Water-stage recorder. Datum of gage Is 8,135.97 ft above mean ssa level (levels 

Try Bureau of Reclamation).

Average discharge . --19 years, 56.0 cfs.

Extremes . --Maximum discharge during year, 1,020 cfs June 16 (gage height, 3.98 ft); minimum recorded, 4.3 cfs Nov. 1.

1929-33, 1935-43, 1944-51: Maximum discharge recorded, that of June 16, 1951; minimum recorded, 1 cfs Aug. 30, 1931, Nov. 28, 1941.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are fair. Records show flow of river at proposed diversion tunnel to Provo River. 

No diversion above station.

Rating table, water year 1950-51, except periods of ic< 

(gage height, In feet, and discharge, In cubic feet per

O.A 4..O 1 -R 99

effect 

econd)

1.0 

1.3

4.0

10

19

32

59

1.6 

2.0 

2.5 

3.0 

3.5

99

179

329

530

770

Discharge, In cubic feet per second, water year October 195O to September 1951

Bay

1

2

3

4

5

6

7

8

9

10

11

12

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

9.4

9.7

9.4

9.1

9.1

9.4

9.4

*9.4

9.1

8.8

8.5

8.5

8.2

8.5

8.5

8.5

8.2

8.2

7.9

7.9

7.6

7.3

7.3

7.3

7.0

7^

9.1

9.4

9.4

9.1

267.1

8.62

530

Nov.

8.2

10

9.7

10

10

9.7

9.4

11

7.9

b7.0

b8.0

b8.5

*8.8

8.2

9.4

11

10

10

12

14

22

T8

15

14

12

11

11

10

10

9.4

-

325.2

10.8

645

Dec.

9.4

b9.4

b9.2

b9.0

b9.0

b9.4

b9.6

blO

blO

bll

11

11

10

b9.8

9.7

10

b9.4

b9.0

b9.0

8.8

b8.6

b8.4

b8.4

8.5

8.5

b8.4

b8.2

b8.4

9.1

b8.8

b8.2

287.2

9.26

570

Jan.

b7.8

b8.0

b9.0

b9.2

b9.4

b9.4

9.5

290.3

9.36

576

Feb.

9.6

'

_

-

268.8

9.6

533

Mar.

9.6

297.6

9.6

590

Apr.

 17

24

31

35

38

38

34

34

*34

33

31

34

39

34

32

31

32

36

31

805

26.8

1,600

May

29

27

26

31

44

61

69

66

71

84

106

111

94

38

79

70

72

94

113

158

177

*216

257

305

407

530

680

*745

735

700

*598

6,843

221

13,570

June

464

312

233

208

202

213

*230

276

289

248

242

273

361

516

655

760

655

630

*598

630

606

460

427

423

447

464

460

435

*384

312

12,453

415

24, 700

July

276

263

248

230

211

184

165

141

124

114

106

94

84

76

71

*67

67

61

58

61

83

61

52

47

43

44

48

49

50

42

38_

3,258

105

6,460

Aug.

34

35

48

98

76

60

*52

44

41

38

34

31

28

27

26

24

23

23

22

26

28

33

33

30

24

21

20

19

21

23

23

1,065

34.4

2,110

Sept.

21

T8

18

17

16

16

*16

15

14

15

14

13

13

12

12

11

11

10

-

382

12.7

758

Calendar year 1950; Max 695 Mln - Mean 73.1 Ac-ft 52,93O

Water year 1950-51: Max 760 Mln - Mean 72.7 Ac-ft 52,640

Peak discharge (base, 5OO cfs).--May 27 (9 p.m.) 847 cfs (3.67 ft)j June 16 (6 p.m.) 1,020 cfs 

(3.98 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote. No gage-height record Jan. 7 to Apr. 12, Sept. 18-30 (stage-discharge relation affected by 

Ice during most of winter period); discharge estimated on basis of weather records and records for 

other stations on Duchesne River and nearby streams.
GREEN RIVER BASIN 22 

Hades Creek near Hanna, Utah

Location. Lat 40°32', long. 110 0 52', in SE£ sec. 26, T. 2 N., R. 9 W. Uinta meridian, on 

right bank a quarter of a mile upstream from mouth and 11 miles northwest of Hanna.

Records available. August 1949 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,460 ft (from river-profile map).

Extremes.--Maximum discharge during year, 90 cfs June 16 (gage height, 2.36 ft); minimum, 

0.4 cfs Apr. 14, but may have been less during periods of : ce effect or no gage-height 

record.

1949-51: Maximum discharge, 105 cfs June 20, 1950 (gage height, 3.07 ft); minimum 

recorded, 0.4 cfs Oct. 15, 16, 1949, Apr. 14, 1951, but may have been less during 

periods of ice effect or no gage-height record.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow is affected by two irrigation diversions above 2,000 ft above 

station.

Rating tables, water year 1950-51, except period of ice effect 

(gage height, In fee-t, and discharge, In cubic feet per second) 

(Shifting-control method used May 18-28)

Oct. 1 to May 28

1.0 0.6

1.1 1.0

1.2 1.8

3.0 

8.1

May 29 to Sept. 

0.8 3.8 1.4

1.0 6.0

1.2 8.9

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Oct.

4.6

4.4

4.4

4.4

4.4

4.6

4.6

4.6

4.8 4~8

4.6

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

3.9

4.2

3.9

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.2

135.4

4.37

Ac-ftj 269

Nov.

3.7

*3.7

3.7

3.7

3,9

3.9

3.9

4.4

bSTT

b3a

b3.5

b3.6

3.7

3.7

b3.6

b3.5

3.7

3.7

3.5

3.5

3.9

3.7

3.5

b3.5

3.5

3.5

3.7

3.5

b3.5

3.5

-

109.5

3.65

217

Dec.

3.5

b3.3

b3.2

b3.1

b3.0

b3.1

3.9

375

3.5

3.5

3.5

3.5

3.5

b3.5

3.5

3.5

b3.4

b3.3

b3.2

*3.2

b3.1

b3.1

b3.2

3.2

b3.2

b3.1

b3.0

b3.1

3.2

b3.1

b2.7

101.4

3.27

201

Jan.

b2.9

b3.0

3.2

3.2

3.0

3.0

3.0

3.0

3.0

 3.0

93.3

3.01

185

Feb.

 2.5

-

-

-

70.0

2.5

139

Mar.

2.5

77.5

2.5

154

Apr.

-

3.0

*3.2

4.2

3.0

1.8

.8

173

3.9

4.2

4.2

4.2

4.6

4.6

4.6

5.1

5.3

5.1

5.3

5.1

5.1

5.3

5.1

-

113.0

3.77

224

May

5.1

5.3

5.3

5.6

6.1

7.5

7.5

7.8

8.1

8.8

9.4

11

10

11

10

*10

12

14

16

18

21

24

30

33

39

44

57

60

*63

67

70

696.3

22.5

1,380

June

63

51

43

37

.33

33

34

36

39

36

*34

34

37

50

61

"62 76

62

62

56

58

61

62

61

58

58

57

53

55

53

-

1,515

50.5

3,000

July

49

45

41

37

34

32

31

29

27

26

25

24

22

21

20

19

18

17

17

16

19ia

18

*19

18

16

16

16

15

14

14

733

23.6

1,450

Aug.

14

14

14

22

ZZ

20

18

17

16

16

15

14

14

14

14

14

14

13

13

13

13

*13

13

12

H

11

11

11

11

11

11

439

14.2

871

Sept.

11

11

11

10

9.1

8.1

8.0

7.5

7.0

6.4

6.3

6.1

6.0

5.8

5.7

5.4

5.4

5.4

5.3

5.2

5.2

5.1

5.0

4.9

*4.9

4.9

4.8

4.5

4 c

iJL

193.9

6.46

385

Calendar year 1950 : Max 68 Min - Mean 11.8 Ae-Ct 8,500

Water year 1950-51 : Max 76 Min - Mean 11.7 Ac-Ct 8,460.

Peak discharge (base, 50 cfs). May 30 (6 a.m.) 76 cfs (2.19 ft); June 16 (9 p.m.) 90 cfs (2.36 ftT 

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 8-17, Jan. 19 to Apr. 9 (stage-discharge relation affected by ice 

during much of winter period); discharge estimated on basis of weather records and records for other 

stations on Duchesne River.

256684 0-53-16
230 GRjiEN RIVER BASIN

Dachesne River near Hanna, Utah

Location. Lat 40°32'00", long. 110°52<15", in NEf sec. 35, T. 2 N., R. 9 W. Uinta meridian, 

on right bank 250 ft downstream from Hades Creek and 7 miles northwest of Hanna.

Drainage area.--78 sq mi, approximately.

Records available.--August 1921 to September 1923 and June 1929 to September 1930 (published as wortn Fork Duchesne River), Marsh 1946 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,380 ft (from river-profile map). 

Frior to March 1946, staff gage at different datum.

Average discharge.--? years (1921-23, 1946-51), 124 cfs.

Extremes. Maximum discharge during year, 1,330 cfs May 27 (gage height, 5.33 ft); minimum, il cfs Nov. 10, but may have been less during periods of ice effect or no gageheight record.

1921-23, 1929-30, 1946-51: Maximum discharge observed, 1,490 cfs June 8, 9, 1982 

(gage height, 4.65 ft, datam then in use); minimum recorded, that of Nov. 10, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. One small diversion above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.6

1.7

2.1

2.5 

3.0

4.0 

5.1

141

271

652

1,200

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

26SB"

26

26

26

26

25

25

25

24

24

22

22

21

21

21

21

21

20

20

19

19

19

19

19

19

21

21

24

23

22

693

22.4

1,370

Nov.

19

*26

22

23

22

22

22

28

20

15

b!7

b20

20

20

20

23

23

23

27

28

50

37

28

b27

26

26

26

26

b26

25

-

737

24.6

1,460

Dec.

23

22

22

b22

b21

b21

b22

b23

b24

b25

26ZB"

25

25

24

24

b23

b23

24

*22

b22

b23

b23

23

22

22

b22

b22

23

22

b22

713

23.0

1,410

Jan.

b21

b!9

b21

b22

b22

b22

22

b22

b21

b20

b20

b20

b!9

b!9

b20

b20

20

21

b21

b20

^

> 20

632

20.4

1,250

Feb.

21

_

-

588

21

1,170

Mar.

21

651

21

1,290

Apr.

. 32

*54

54

56

68

87

95

99

106

100

102

108

106

95

102

115

10T

102

94

95

115

100

-

2,245

74.8

4,450

May

90

82

79

57

106

139

159

156

159

170

213

203

200

195

175

*159

159

200

235

303

373

403

495

551

687

866

1,090

1,180

1,150

1,100

*1,010

12,174

393

24,150

June

766

571

464

399

584

399

421

479

510

460

*433

479

534

687

835

995,

555

871

840

850

790

643

596

580

584

588

575

555

522

475

18,270

609

36,240

July

425 3"9~9~

366

334

303

271

250

227

210

195

185

168

156

148

139

137

133

125

121

123

159

129

112

*104

99

97

102

104

102

92

85

5,600

181

11,110

Aug.

82

83

104

163

TIB

121

108

97

92

87

83

79

74

72

69

66

64

63

62

68

71

*74

74

71

60

56

51

50

55

60

56

2,464

79.5

4,890

Sept.

5650-

47

44

41

39

38

36

36

36

33

32

31

30

29

28

27

27

28

26

26

26

26

26

*25

2455"

25

25

24

-

966

32.2

1,920

Calendar year 1950 : Max 1,060 Mln - Mean 128 Ac-ft 92,910

Water year 1950-51 : Max 1,180 Mln - Mean 125 Ac-ft 90,710

Peak discharge (base, 900 cfs). May 27 (10 p.m.) 1,330 cfs (5.33 ft); June 16 (11:30 p.m.) 1,230 

Cfs (5.14 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Jan. 21 to Apr. 9 (stage-discharge relation affected by Ice during 

much of period); discharge estimated on basis of weather records and records for stations on DuchesneRiver and nearby streams.
GREEN RIVER BASIN

West Fork Duchesne River below Dry Hollow, near Hanna, Utah

Location. Lat 40°27', long. 110°59' , in SE£ sec. 25, T. 1 N., R. 10 W., Ulnta meridian, 

on left bank 200 ft downstream drom Dry Hollow, 5 miles upstream from Wolf Creek, and 

8 miles west of Hanna.

Records available. August 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,600 ft.

Extremes. Maximum discharge during year, 631 cfs May 27 (gage height, 3,73 ft); minimum 

not determined, occurred during period of no gage-height record.

1949-51: Maximum discharge, 687 cfs May 30, 1950 (gage height, 3.93 ft); minimum 

recorded, 5.0 cfs Mar. 22, 1950.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Sept. 23-30)

3 .0 

1.2 

1.5 

1 .9

2.4 

3.0 

3.5

168

342

535

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

14

14

14

14

14

14

14

14

14

14

14

14

13

14

14

14

13

13

13

13

13

13

13

13

13

14

14

14

14

14

425

13.7

843

Nov.

13

16

13

*13

14

14

14

14

bll

blO

bll

b!2

14

13

14

b!4

14

14

14

14

21

Ts

b!6

bl3

b!4

15

b!2

b!3

b!3

b!6

-

417

13.9

827

Dec.

14

bll

bll

b!2

b!2

b!3

b!3

14

14

14

14

13

13

b!2

13

b!2

bll

b!3

b!4

13

b!3

399

12.9

791

Jan.

b!2

12

12

12

bll

11

359

11.6

712

Feb.

10

_

_

-

280

10.0

555

Mar.

10

310

10.0

615

Apr.

13

14

15

15

15

15

16

17

18

18

17

*18

23

26

29

28

34

37

36

36

34

31

34

39

35

35

32

34

36

33

783

26.1

1,550

May June

30 236

29 186

29 170

33 164

37 164

45

52

55

60

73

91

94

86

79

73

68

71

*85

106

141

168

180

214

256

294

372

433

*417

372

353

290

4,686

151

9,290

168

173

166

158

151

151

147

147

147

*151

143

139

136

125

134

136

114

106

99

93

87

81

76

72

61

4,087

136

8,110

July

63

60

56

54

50

47

44

43

41

41

38

35

34

32

31

32

30

28

28

34

34

31

26

26

*28

29

26

24

26

23

23

1,117

36.0

2,220

Aug.

23

23

25

31

ZB

23

21

20

19

19

18

18

17

17

17

16

16

17

16

18

19

19

*20

20

17

17

15

15

17

18

16

596

19.2

1,180

Sept.

15

14

14

14

14

14

13

13

13

13

13

13

13

13

13

12

12

12

13

12

12

12

12

12

12

*11

TT

12

12

12

-

381

12.7

756

Calendar year 1950: Max 498 Mln - Mean 52.0 Ac-ft 37,660

Water year 1950-51: Max 433 Min - Mean 37.9 Ac--ft 27,450

Peak discharge (base, 300 cfs).--Hay 27 (8 p.m.) 631 cfs (3.73 ft).

* Discharge measurement made on this day.

b Stage-discharge affected by ice.

Note.--No gage-height record Jan. 20 to Apr. 7 (stage-discharge relation affected by ice during 

part of period); discharge estimated on basis of weather records and records for other stations on 

West Fork Duchesne River and nearby streams.
232 GREEN RIVER BASIN

West Fork Duchesne River near Hanna, Utah

Location. Lat 40°27 I , long. 110°53', in SEi;- sec. 27, T. 1 N., R. 9 W. Uinta meridian, on 

 iet't bank 1,000 ft upstream from Wolf Creek and 4 miles west of Hanna.

Drainage area. 61 sq mi, approximately.

Records available.--May to October 1904 (fragmentary), August 1921 to September 1923, 

uctoDer lyis to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,220 ft (from river-profile map). 

Prior to October 1945, staff gages at approximately same site at different datums.

Average discharge.--7 years (1922-23, 1945-51), 52.2 efs.

Extremes. Maximum discharge during year, 619 cfs May 27 (gage height, 4.33 ft); minimum, 

b'.Y cfs Dec. 31, but may have been less during periods of ice effect or no gage-height 

record.

1904, 1921-23, 1945-51: Maximum discharge recorded, that of May 27, 1951; minimum 

recorded, that of Dec. 21, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversions above station.

Rating table, water year 1950-51, except periods of Ice effect

(gage height, in feet, and discharge, In cubic feet per second)

(Shifting-control method used May 23-28)

Oct. 1 to May 28 May 29 to Sept. 30

1.2

3.0

11

22

46

76

170

295

1.8 

2.0 

2.2 

2.5 

2.0 

3.7

29

54

108

223

412

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

IB

n

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

23

2?

22

22

21

21

21

21

21

21

21

21

21

20

20

20

20

20

20

20

20

19 IS"

19

19

19

21

21

20

20

20

635

20.5

1,260

Nov.

20

25

*21

20

20

202O'

21

15

bl£

b!5

b!7

19

19

18

21

21

20

21

21

29

2T

23

18

21

21

17

18

18

22

-

601

20.0

1,190

Dec.

20IB"

b!6

b!7

b!7

b!8

b!9

b20

b20

20

20

20

19

18

20

17

15

W

*20

18

16

18

18

19

18

17

17

16

19

19

18

563

18.2

1,120

Jan.

b!7

b!6

b!6

b!6

b!7

17

17

18

IS

18

18

17

18

18

18

17

17

17

16

16

17

17

16

16

16

14

IT

14

14

14

14

508

16.4

1,010

Feb.

14

14

14

_

.

-

392

14.0

778

Mar.

14

*18

18

442

14.3

877

Apr.

19

5T

23

23

23

24

26

28

31

31

27

29

35

40

42

42

47

49

48

49

46

43

46

51

46

46

44

45

52¥5"

1,122

37.4

2,230

May

43

41

40

*4T

47

54

62

67

70

87

105

112

101

98

87

78

79

94

118

166

191

207

252

306

388

442

448

457

*30T

378

345

5,408

174

10,730

June

2TS- 269

191

179

184

181

191

184

172

165

160

155

156

156

*158

153

149

142

133

140

144

125

116

108

102

96

90

84

83

77

4,460

149

8,850

July

74

TO

67

62

60

57

53

51

50

48

48

45

44

43

40

43

40

39

39

47

46

44

38

37

*36

39

36

33

34

31

3T

1,426

46.0

2,830

Aug.

32

30

34

41

3¥

31

27

27

27

26

25

24

23

23

22

22

21

23

22

24

26

26

*25

27

22

20

2T7

20

23

24

21

797

25.7

1,580

Sept.

20

IF

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

19

18

18

18

17

17

*16

17

16

16

15

549

18.3

1,090

Calendar year 195O: Max 550 Min - Mean 65.9 Ac-ft 47,710

Water year 1950-51 : Max 457 Mln - Mean 46.3 Ac-ft 33,540

Peak discharge 

* Dlschargi

ase, 300 cfs).--May 27 (10 p.m.) 619 cfs (4.33 ft), 

asurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--No gage-height record Feb. 3 to Mar. 29 (stage-discharge relation affected by Ice during 

part of period); discharge estimated on basis of weather records and records for other stations on 

West Fork Duchesne River and nearby streams.
GREEN RIVER BASIN 233

Wolf Creek above Rhodes Canyon, near Hanna, Utah

'location. Lat 40=28' , long. 110"55' , in NW£ sec. 21, T. 1 N., R. 9 W. Uinta meridian, 

on left bank lj miles upstream from Rhodes Canyon, 2f miles upstream from mouth, and 5? 

miles northwest of Hanna.

'ralnage area. 9 sq mi, approximately.

"ecords available. October 1945 to September 1951.

''rage. Water-stage recorder and masonry control. Altitude of gage is about 7,700 ft.

'verage discharge. 6 years, 8.09 cfs.

~!xt reme s. - -Maximum discharge during year, 61 cfs May 29 (gage height, 2.30 ft); minimum, 

 3.y cfs Mar. 29 (gage height, 1.40 ft).

1945-51: Maximum discharge, 72 cfs June 11, 1949 (gage height, 2.60 ft); minimum 

not determined.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

No diversion above station.

Rating tables, water year 1950-51 (gage height,^in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Sept. 10

1.3

1.4

1.5

1.6

3.1 

4.2 

6.1

Sept. 11 to Sept. 30

1.8 :;. 4

1.9 B.B

Discharge, in cubic feet per second, water year October 195.0 to September 1951

Tay

1

2

3

4

5

6

7

8

9

10

11

]2

13

: 5

: 'l

' 8

"9

20

;;i

22

23

24'25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

8.3

8.0

8.0

8.0

8.0

8.3

8.0

8.0

8.0

8.0

8.0

8.0

8.0

7.7

7.7

7.7

7.7

7.7

7.4

7.

7.

7.

7.

7.

7.2

7.2

7.2

6^9

6.9

6.9

237.5

7.66

471

Nov.

6.9

7.2

*6.9

6.6

6.6

6.6

6.6

6.9

6.4

6.6

6.6

6.6

6.6

6 .6

6.6

6.4

6.4

6.4

6.4

6.4

6.4

6.1

6.1

6.1

6.1

6.1

6.1

5.9

5.9

"

193.5

6.45

384

Dec.

5.9

579

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.7

5.7

5.9

5.9

5.9

5.9

5.9

5.7

*5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.5

5 .5

5.5

5.5

5.5

178.5

5.76

354

Jan.

5.3

5.5

5.5

5.3

5.5

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.2

5.0

5.2

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4.8

4.8

160.1

5.16

318

Feb.

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

4.8

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

4.4

4.4

-

-

-

130.6

4.66

259

Mar.

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.2

4.2

4.2

111

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

4.1

130.7

4.22

259

Apr.

4.1

4.1

4.1

4.2

4.2

4.2

4.1

4.1

4.4

4.1

4.2

*4.2

4.2

4.4

4.4

4.4

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.8

4.6

4.6

4.6

4.8

4.8

132.4

4.41

263

May

4.6

4.4

4.4

4.2

4.2

4.4

5.0

5.2

5.3

5.5

6.1

8.5

8.8

8.5

8.0

*7.4

8.8

11

15

18

21

25

27

33

39

47

*48

49

45

41

529.7

17.1

1,050

June

33

28

25

22

22

22

25

25

23

22

21

21

21

*22

23

23

24

24

24

26

27

24

22

21

20

18

18

18

18

18

July

18

18

18

17

17

16

16

16

15

15

14

14

14

13

13

13

12

11

11

13

13

12

11

IT

11

11

11

11

11

11

680 418

22.7

1,350

13.5

829

Aug.

11

11

11

13

TT

11

10

9.9

10

10

10

9.9

9.6

9.6

9.6

9.6

8.8 

8.5

8.8

8.8

8.5

8.5

8.5

*8.5

8.3

8.3

8.3

8.3

8.5

8.3

8.0

293.1

9.45

581

Sept.

8.0

a7.9

a7.8

a7.8

a7.7

a7.6

a7.6

a7.5

a7.4

a7.4

7.3

8.9

6.9

6.6

6.6

6.S

6 * S 

C.9

7.7

7.7

7.3

7.3

7.3

7.3

6.9

*6.3

6.3

6.0

6.0

6.0

213.8

7.13

424

Calendar year 1950: Max 46 Mln 3.4 Mean 10.2 Ac-ft 7,380

Water year 1950-51: Max 49 Min 4.1 Mean 9.04 Ac-ft 6,540

Peak discharge (base, 25 efs).--May 29 (6 p.m.) 61 cfs (2.30 ft); 

June 20 (5 p.m.) 31 cfs (2.02 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge interpolated.

p.m.) 32 cfs (2.03 ft);
234 GREEN RIVER BASIN

Duchesne River near Tabiona, Utah

Location. Lat 40°18'00", long. 110°36'10", in SW^SE-f see. 18, T. 2 S., R. 6 W. Uinta 

meridian, at downstream side of left abutment of bridge on State Highway 35, 6j miles 

upstream from Rock Creek,and 8 miles southeast of Tabiona.

Drainage area.--352 sq mi.

Records available.--January 1919 to September 1951.

Gage.--Water-stage recorder. Prior to Oct. 16, 1934, staff gage at same site and datum.

Average discharge.--32 years, 212 cfs.

Extremes.--Maximum discharge during year, 1,890 cfs May 29 (gage height, 8.24 ft); minimim, 

Yb el's Mar. 11.

1919-51: Maximum discharge observed, 2,500 cfs June 13, 1921, from rating curve 

extended above 1,100 cfs; minimum recorded, 27 cfs Oct. 17, 1934.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, 

wnieh are fair. Several diversions above station for irrigation.

Rating tables, water year 195O-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 12-26)

4.5 

5.0 

5.5

Oct. 1 to May 26

78 6.5

173 7.0

318 7.5

May 27 to Sept. 30

758

1,070

1,440

4.6 

5.0 

5.5 

6.0

140

263

430

7.5 

8.2

648

1,300

1,860

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

162 I5"9~

*157

146

146

140

133

129

125

123

120

118

110

114

112

107

107

107

107

105

102

102

96

8850"

90

92

96

98 

100

105

3,586

116

7,110

Nov.

108

110

*118

121

116

107

TOT

110

125

123

157

157

155

155

152

144

166

166

183

166

178

186

TB1T

157

159

155

148

148

146 

150

-

4,341

145

8,610

Dec.

148

T4TT

140

148

146

a!40

a!38

a!38

a!40

a!40

a!42

a!42

a!43

a!42

a!40

a!38

al37

a!36

*135

135

121

120

123

129

125

123

118

T2TT

125 

127

123

4,162

134

8,260

Jan.

no

b±OO

bTTO

125 155-

123

b!20

bllS

bl!2

bllO

bllO

bllO

bllO

112

112

*114

114

118

114

bl!2

bllO

114

118

118

116

118

116

114

112 

allO

allO

3,532

114

7,010

Feb.

blOO

bTOO"

b!05

bllO

bllO

114

116

140

T3T

129

127

121

*112

100

105

110

110

112

105

102

107

110

110

103

100

108

108

105

-

-

3,110

111

6,170

Mar.

98

110

102

102

105

105

107

108

*114

105

93SB'

110

105

110

110

93

98

102

107

114

120

98

105

116

120

118

103

105 

*116

118

3,315

107

6,580

Apr.

112

123

133

125

127

131

135

146

157

142

146

157

180

203

209

225

228

225

231

237

217

217

237

228

228

214

201

240

53T

-

5,501

183

10,910

May

201

190

176 *18"3~

190

228

260

270

273

282

339

379

360

360

336

305

276

308

364

479

605

610

726

775

948

1,180

*1,550

1,760

*1,800 

1,740

1,660

19,113

617

37,910

June

1,430

1,120

945

796

750

750

761

801

856

784

728

767

778

951

1,090

1,260

1,350

1,220

1,160

1,200

1,200

1,050

932

893

880

868

*844

807

761 

700

-

28,432

948

56,390

July

633 555"

553

514

485

430

400

376

351

332

309

287

252

230

222

214

225

207

202

217

263

232

212

*204

197

197

190

190

183

171

164

9,227

298

18,300

Aug.

162

164

190

309

255

238

225

217

212

195

178

171

162

155

142

130

126

124

140

*144

178

178

167

158

153

144

153 

162

153

5,507

178

10,920

Sept.

146

1ST

134

136

a!33

a!30

al27

a!24

a!21

alls

*116

ne

114

107

107

99

97

101

97

92

87

92

92

*87

87

83

81

BT

81

-

3,211

107

6,37C

Calendar year 1950 : Max 1,680 Mln 75 Mean 280 Ac-ft 202,400

Water year 1950-51 : Max 1,800 Mln 81 Mean 255 Ac-ft 184,500

Peak discharge (base, 900 cfs).--May 29 (11:30 a.m.) 1,890 cfs (8.24 ft); June 17 (7 a.m.) 1,500 

Cfs ^7 .75 ft) .

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and recorded range In 

stage, or Interpolated.

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 235

Rock Creek near Hanna, Utah

Location. Lat 40°33', long. HOMO 1 , in SEij sec. 27 (revised), T. 2 N., R. 7 W. Uinta 

 meridian, on right bank 1-f miles downstream from South Pork and 10.5 miles northeast 

of Hanna.

Records available.--July 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,620 ft (from river-profile map).

Extremes.--Maximum discharge.during year, 1,970 cfs June 16 (gage height, 7.67 ft); minimum not determined, occurred during period of no gage-heignt record.

1949-51: Maximum discharge, that of June 16, 1951; minimum, 16 cfs Dec. 4, 1949.

Remarks.--Records excellent except those for periods of doubtful or no gage-height record, 

which are fair.

Rating table, water year 1950-51 (gage'height, In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used May 27-30)

2.1 26

2.5 53

3.0 107

3.5 179

4.0 293

5.0 597

6.0 1,030

7.0 1,590

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

56

57

56

54

52

52

50

52

51

49

48

47

46

45

45

45

44 

43

42

41

41

40

40

40

*40

39

4T

43

45

45

43

1,428

46.1

2,830

Nov.

37

47

40

44

44

42

41

47

28

42

-

1,252

41.7

2,480

Dec.

> 40

*40

38

29

1,073

34.6

2,130

Jan.

29

899

29

1,780

Feb.

29

_

_

-

812

29

1,610

Mar.

27

837

27

1,660

Apr.

2729"

29

34

*30

31

33

33

36

38

32

38

44

54

58

60

66 

62

64

68

64

60

64

73

68

67

64

68

81

rr1,546

51.5

3,070

May

65

June

993

60 727

58 583

S7

82

110

124

123

128

*14i

190

208

177

174

154

139

140 

177

206

280

368

376

446

525

668

912

*1,200

1,460

*1,46C

1,460

1,340

486

457

443

446

489

535

512

480

538

653

941

1,250

1,540

1,580 

1,300

1,200

1,250

1,OOO

900

850

860

880

900

910

*874

R24"i

13,018 1 25,104

420 837

25,820 49,790

July

657

523

586

545

498

449

417

385

356

331

312

290

264

250

237

233

226

217

211

221

277

228

19B

185

179

176

172

176

179

170

156

9,402

303

18,650

Aug.

154

167

*233

379

315

280

228

202

185

167

158

147

139

129

124

119

115 

114

112

141

148

144

146

140

120

110

103

102

ro

124

108

4,968

160

9,850

Sept.

106 ~55~

93

89

85

83

79

75

73

71

70

68

*66

65

64

63

60 

61

61

58

58

57

57

55

53

52

51

5T

54

53

 -

2,030

67.7

4,030

Calendar year 1950 : Max 1,490 Mln - Mean 183 Ac -ft 132,500

Water later year year 1950-51 19bO-bl : : Max Max 1,580 1,580 Mln Mln - - Mean Mean 171 171 Ac-ft Ac-ft 123,700 123,700

Peak discharge (base, 1,100 cfs).--May 28 (11 p.m.) 1,640 cfs (7.19 ft); June 16 (1O p.m.) 1,970 

cfs (7.67 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 10 to Dec. 14, Dec. 17 to Apr. 4, June 18-27 (stage-discharge 

relation affected by Ice during part of winter period); discharge estimated on basis of weather re 

ords and records for Rock Creek near Mountain Home.
236 GREEN RIVER BASIN

Rook Creek near Mountain Home, Utah

Location. Lat 40°29'30", long. 110°34'40", in SWi sec. 9, T. 1 N., R. 6 W. Uinta meridian, 

at Lower Stillwater dam site "B ", on right bank a third of a mile upstream from Corral 

Creek, 7 miles downstream from South Fork, and 12 miles northwest of Mountain Home.

Drainage area. 149 sq mi.

Records available. November 1937 to September 1951.

uage . Water-stage recorder. Altitude of gage is about 7,250 ft. Prior to Apr. 12, 1939, 

 staff gage at site 300 ft upstream at different datum.

Average discharge. 13 years (1938-51), 171 cfs.

Extremes. Maximum discharge during year, 1,810 cfs June 17 (gage height, 5.34 ft); mininwm, 

3y cfs Nov. 10 (gage height, 1.35 ft).

1937-51: Maximum discharge, 2,170 cfs June 19, 1949 (gage height, 5.73 ft); minimum, 7 cfs Mar. 13, 1940, Mar. 20, 1942 (probably caused by ice jams above station).

Remarks. Records good. No diversions above station.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used May £5-27)

1.4 

1.7 

2.0 

2.5

3.0 

3.5

333

548

830

1,550

Discharge, in cubic feet per second, water, year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

76

74

78

77

73

73

72

72

71

70

68

68

55

65

65

65

64

61

60

60

60

60

57

57

*58

56

5E

58

6C 

59

56

2,019

65.3

4,OOC

Nov.

54

62

56

60

59

59

57

60

53

40

47

53

56

56

56

54

60

59

67

68

82

73

67

62

63

60

59

58

56 

57

1,773

59.1

3,520

Dec.

56

51

50

50

51

54

69

70

70

66

63

60

59

56

*57

56

51

50

53

52

49

45

47

49

49

48

45

44

47 

47

45

1,659

53.5

3,290

Jan.

39

41

48

49

52

45

45

48

49

46

49

45

45

47

48

48

47

48

49

45

51

53

50

56

55

*53

4£

49

49 

47

43

1,486

47.9

2,950

Feb.

41

45

50

50

51

53

53

53

53

53

52

51

49

44

49

49

48

47

45

42

45

*44

41

41

42

43

43

44

1,321

47.2

2,620

Mar.

42

42

42

43

44

45

48

49

48

45

45

45

45

46

47

45

43

45

45

44

45

45

46

48

48

48

46

*46

47 

44

43

1,404

45.3

2,780

Apr.

45

48

49

52

49

50

52

52

53

56

51

55

57

65

70

73

79

77

78

85

81

76

79

89

84

84

80

82

~5T 105 

-

2,047

68.2

4,060

May

84

79

76

BZ

93

119

140

138

148

*156

198

224

190

198

176

152

144

176

210

283

382

374

453

519

655

862

*1,160

1,380

*1.470 

1,450

1,450

13,221

426

26,220

June

1,210

921

752

628

558

564

558

ITT

677

644

590

660

788

1,030

1,280

1,440

1,520

1,330

1,280

1,320

1,160

954

895

902

928

960

967

*934

876 

788

-

27,725

924

54,990

July

704

6T7

638

606

558

504

467

427

390

370

352

323

306

286

270

270

277

255

240

264

330

280

232

218

210

205

202

202

205 

205

185

10,658

344

21,140

Aug.

185

188

*258

402

366

313

255

221

202

188

180

167

156

150

142

135

131

129

128

150

176

162

162

162

137

128

119

118

12?

144

124

5,607

181

11,120

Sept.

1Z2

m

103

107

103

97

915

93

90

89

813

84

*8<t

82

81

80

79

78

79

76

76

74

74

73

72

71

70

71

73 

72

-

2,554

85.1

5.07C

Calendar year 1950: Max 1,510 Min 40 Mean 207 Ac-ft 149,600

Water year 1950-51: Max 1,520 Min 39 Mean 196 Ac-ft 141,800

Peak discharge (base. 1,200 efs).--May 29 (3:30 a.m.) 1,520 ofs (4.89 ft); June 17 (2:30 a.m.) 

1,810 cfs (5.34 ft).

* Discharge measurement made on this day.
GREEN RIVER BASIN 237 

Duchesne River at Duchesne, Utah

Location.--Lat 40°09<55", long. 110°23'50", in SW^NE-q; sec. 1, T. 4 S., R. 5 ¥. Uinta meridian, on right bank at Duchesne, half a mile upstream from Strawberry River.

Drainage area. 660 sq mi, approximately.

Records available. December 1917 to September 1951.

Sage. Water-stage recorder. Altitude of gage is about 5,500 ft. Prior to Oct. 18, 1934, 

staff gage at site 1,200 ft upstream at different datum.

Average discharge. 34 years, 375 cfs.

Extremes. Maximum discharge during year, 3,130 cfs May 28 (gage height, 6.08 ft); minimum, 

 91 cfs Sept. 27, 28.

1917-51: Maximum discharge observed, 4,420 cfs June 10, 1922 (gage height, 8.65 ft, 

site and datum then in use); minimum observed, 15 cfs July 11, 1931.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnich are fair. Diversions above station for irrigation.

Rating tables, water year 1950-51, except period of loe effecrt 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 21-23, Mar. 20 to Apr. 9, May 26-30)

Oct. 1 to May 28 May 29 to Sept. 30

2.7 

3.0 

3.5

113

196

400

4.0 680

5.0 1,480

6.2 2,960

2.4 

3.0 

3.5

91

315

582

4.0 980

5.0 2,080

6.0 3,450

Discharge, In cubic feet per second, water year Octobsr 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

229

22?

226

216

209

203

199

190

190

184

180

174

168

127

143

137

140 

137

*137

132

132

132

130

123

118

120

120

130

132

135

*140

4,962

160

9,840

Nov.

145

143

157

157

159

151 148-

148

165

157

190

226

226

226

226

209

229 

233

265

251

247

265

247

236

229

226

219

216

212

216

-

6,124

204

12,150

Dec.

*216

206

203

229

222

203

236

240

240

229

222

216

219

212

216

212

206 

193

203

212

196

190

190

200

6,511

210

12,910

Jan.

190

(*)

180

187

180

174

151

5,632

182

11,170

Feb.

145

ISO

160

170

180

190

206

206

216

209

206

*203

190

171

174

184

180 

180

168

168

174

180

177

162

157

162

174

165

_

_

-

5,007

179

9,930

Mar.

159

174

162

162

171

*165

171

171

111

168

162

154

168

162

159

162

145 

145

162

159

159

162

145

145

159

171

174

162

162

165

171

5,033

162

9,980

Apr.

174

*162

157

159

162

157

159

162

162

184

180

162

162

177

193

206

216 

226

226

229

233

226

212

216

222

222

216

206

233

254

5,855

195

11,610

May

*226

203

187

177

187

212

June

2,520

1,960

1,600

1,330

1,190

1.110

226 1,120

281 1,180

297 1,300

310

360

440

450

460

470

*435

405 

425

5OO

668

943

990

1,180

1,350

1,600

2,010

*2,480

2,890

*5.050

2,960

*2,960

29,332

946

58, 180

1,300

1,200

1,200

1,280

1,590

1,960

2,400

2^560

2,370

2,340

2,290

2,040

1,730

1,650

1,650

1,670

*1,660

1,650

1,580

1,440

-

51,570

1,719

102,300

July

1.500

1,190

1,120

1,040

962

848

773

710

665

636

569

519

473

424

424

413

424

429

398

398

467

467

*394

360

342

333

328

320

320

311

285

17,642

569

34,996

Aug.

281

294

342

589

68,8

550

502

445

408

389

370

346

333

302

285

268

223

220

212

1_97

*243

252

252

360

281

264

243

231

239

281

264

10, 154

328

20, 140

Sept.

252

235

223

216

201

189

175

161

157

150

147

140

140

133

130

130

123 

117

120

120

107

104

107

*104

104

101

91

94

97

101

-

4,269

142

8,470

Calendar year 1950 : Max 2,950 Min 43 Mean 453 Ao-ft 331,800

Water year 1950-51 : Max 3,050 M111 91 Mean 417 Ac -ft 301,700

Peak discharge (base, 1.400 efs). May 28 (2 p.m.) 3,130 cfs (6.08 ft)} June 17 (4 p.m.) 3,120 cfs 

(5.77 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 24 to Jan. 8 (stage-discharge relation affected by Ice for part 

of period); discharge estimated on basis of weather records and records for other Duchesne River 

stations. Stage-discharge relation affected by Ice Jan. 9-27} Feb. 2-6.
238 GREEN RIVER BASIN

Strawberry Reservoir near Soldier Springs, Utah

Location. Lat 40°10'10", Jong. 111°10'45", in sec. 36, T. 33,, R. 12 W. Uinta meridian, 

at east portal of Strawberry tunnel, 7 miles southwest of Soldier Springs,and 22 miles 

east of Springville.

Drainage area. 170 sq mi (includes that portion of drainage areas of Indian Creek and 

Trail HOI .LOW above diversion dams), approximately.

Records available. October 1945 to September 1951. January 1913 to September 1945 in 

rues oi1 Bait Lake City District office, Geological Survey.

Gage. Staff gage read to half-tenths on last day of each month. Datum of gage is mean 

sea level (levels by Bureau of Reclamation).

Extremes. 1913-51: Maximum contents observed 265,800 acre-ft June 1, 1922 (elevation, 

Y ,5bu.2 ft), from capacity table then in use; minimum contents observed, 13,500 acre-f; 

Oct. 1, 1931 (elevation, 7,520.20 ft), from capacity table then in use.

Remarks. Reservoir is formed by a rock-faced, earth-fill dam with concrete core-wall in 

sec. 3, T. 43., R. 11 W. Uinta meridian, and Indian Creek dike, a rock-faced earth 

fill 37 ft in height with concrete core-wall, completed Sept. 20, 1913. Storage began 

July 14, 1912. Capacity at spillway crest, 283,000 acre-ft (elevation, 7,558.0 ft), 

gross contents. Dead storage below intake to tunnel, 13,000 acre-ft (elevation, 7,512.0 

ft). Dead storage prior to Jan. 1, 1934, when outlet was lowered, approximately 28,000 

acre-ft. Water diverted through Strawberry tunnel and used in the vicinity of Spanish 

Pork in Great Basin. Water diverted to reservoir from headwaters of Currant Creek 

through Currant Creek feeder canal since 1936. Small transmountain diversions from 

tributaries through Daniels Pass to Provo River Basin. Contents given herein represent 

usable storage.

Monthly elevations and contents, water year October 1950 to September 1951

Date

Calendar year 1950....

Water year 1950-51....

Elevation 

(feet)

-

7 539 50 *

-

Contents 

(acre-feet)

-

-

Change In contents 

during month 

(acre -feet)

+22,960

+8,870
GREEN RIVER BASIN 239

Strawberry River near Soldier Springs, 'Jtah

ta 

upstream

Location. Lat 40"08'15", long. 111°01'35", in NW^NW^ sec. 16, T. 4 S., R. 10 W. Uin 

menaian, on left bank half a mile downstream from Stinking Springs, 2^ miles ups 

from Willow Creek, and 3 miles south of Soldier Springs.

Drainage area. 212 sq mi (includes 170 square miles tributary to Strawberry Reservoir, 

wnicn includes area above diversion dams on Indian Creek and Trail Hollow).

Records available. October 1942 to September 1951.

Gage. Water-stage recorder. Datum of gage is 7,369.3 above mean sea level (levels by 

Bureau of Reclamation).

Average discharge. 9 years, 29.1 cfs.

Extremes.--Maximum discharge during year, 243 cfs Apr. 15 (gage height, 2.59 ft); minimum, 

 FrcTs Mar. 9-24.

1942-51: Maximum discharge, 458 cfs Apr. 22, 1950 (gage height, 3.22 ft); minimum 

recorded, 8.8 cfs Jan. 30, 194/7.

Remarks. Records excellent except those for period of no gage-height record, which are 

rair. Water is diverted from Strawberry Reservoir, 7 miles upstream, to Great Basir 

(see preceding page). Water is seldom released from reservoir into Strawberry River.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, in cubic feet per second)

1.0 

1.2 

1.5 

1.9 

2.5

95

219

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

U

12

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

24

24

24

23

23

23

23

22

f2

22

2?.

22

23

22

22

22

22

22

23

23

22

22

23

22

22

22

22

708

22.8

1,400

Nov.

*22

22

22

21

21

21

21

20

20

20

20

19

19

20

19

19

19

20

25

26

32

27

22

21

21

20

20

20

20

21

-

640

21.3

1,270

Dec.

20

20

20

20

20

20

20

20

21

21

21

21

»20

20

19

19

19

19

18

18

18

18

19

19

19

19

19

19

19

18

IT600

19.4

1,190

Jan.

17

17

17

17

17

17

17

17

17

17

17

17

18

18

18

18

18

18

18

18

18

16

»T6

16

16

16

17

17

16

17

17

530

17.1

1,050

Feb.

17

17

16

T6

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

16

_

_

-

450

16.1

893

Mar.

16

16

16

16

16

15

15

*15

15

1£

14

14

14

14

14

14

14

14

14

14

15

15

15

15

15

15

15

15

15

15

15

459

14.8

910

Apr.

15

15

16

18

19

22

25

26

30

34

36

52

*79

114

137

131

116

104

89

88

79

64

64

69

67

62

69

59

86

77

1,862

62.1

3,690

May

69

*67

56

54

54

55

55

54

55

58

53

56

56

60

67

61

*66

56

55

69

80

69

62

61

58

56

55

54

54

53

52.

1,830

59.0

3,630

June

54

56

58

56

54

53

52

51

51

51

50

48

*47

46

46

45

45

45

45

45

50

48

46

46

45

43

41

41

41

4£

1,439

48.0

2,850

July

40

39

38

38

38

37

37

36

36

36

36

36

36

35

35

35

35

34

33

36

37

36

34

33

33

*33

3232"

32

32

32

1,092

35.2

2,170

Aug.

31

32

33

38

35

34

32

32

32

31

31

31

30

30

30

30

30

30

30

30

31

30

30

29

29

28

28

28

*28

28

28

949

30.6

1,880

Sept.

28

27

> 26

(*)

_

783

26.1

1,550

Calendar year 1950: Max 273 Min 14 Mean 36.6 Ac-ft 26,460

Water year 1950-51: Max 137 Min 14 Mean 31.1 Ac-ft 22,480

* Discharge measurement made on this day.

Note. No gage-height record Sept. 3-30; discharge estimated on basis of weather records and records for Strawberry River at Duchesne and Currant Creek near Pruitland.
240 GREEN RIVER BASIN

Currant Creek below Red Ledge Hollow, near Fruitland, Utah

Location. Lat 40°20', long. 111°03', in NWi; sec. 8, T. 2 S.. R. 10 W. Uinta meridian, on 

right bank 600 ft downstream from Red Ledge Hollow and I3j miles northwest of Fruitland.

Drainage area. --48 sq mi, approximately.

Records available.--October 1945 to September 1951.

Gage. Water-stage recorder.

Average discharge. 6 years, 27.8 cfs.

Extremes.--Maximum discharge during year, 242 cfs May 20 (gage height, 2.88 ft); minimum, 

a.b cfs Nov. 10, but may have been less during periods of ice effect or no gage-height 

record.

1945-51: Maximum discharge, 520 cfs May 16, 1950 (gage height, 3.68 ft); minimum, 

2.5 cfs Sept. 7, 1948.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Currant Creek feeder canal, constructed by the Bureau of Reclamation 

in 1936, diverts water from headwaters to Strawberry Reservoir, from which it is diverted through Strawberry tunnel to Great Basin for irrigation in Strawberry Valley 

project.

Rating table, water year 195O-51, except periods of lee effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.1

1.2 

1.4 

1.7

2.8 

5.3

12

31

2.1 

2.5 

3.0

71

136

263

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

8.5

8.9

8.5

8.5

8.9

8.2

879

8.9

8.5

8.9

8.9

8.9

8.9

9.3

8.9

8.5

8.5

8.5

8.5

8.5

8.5

8.6

8.6

8.7

8.8

9.0

9.2

9.3

9.5

9.7

274.0

8.84

543

Nov.

*9.7

9.7

9.4

9.2

8.8

8.5

8.0

7.5

7.1

6.9

8.2

8.5

8.9

8.9

8.2

10

9.7

10

b!6

b!4

b!5

b!4

b!4

b!4

b!3

b!3

b!2

b!2

bll

12

-

317,2

10.6

629

Dec.

12

bll

11

12

b!2

bll

12

12

12

b!2

b!2

12

b!2

*bll

11

bll

bll

blO

blO

blO

blO

b9.8

b9.6

b9.4

b9.4

b9.4

b9.4

b9.4

9.3

9.3

11

333.0

10.7

660

Jan.

. b9.o

9.0

279.0

9.0

553

Feb.

9.0

-

252.0

9.0

500

Mar.

> 9.0

. 14

359.0

11.6

712

Apr.

36

*51

55

57

60

63

65

72

70

70

68

70

73

72

70

72

73

74

70

-

1,637

54.6

3,250

May

68.

38

68

69

72

75

82

95

93

90

100

115

100

92

100

94

*88

97

117

146

164

149

149

155

157

166

164

144

125

*115

103

3,420

110

6,780

June

91

84

77

71

66

61

58

56

54

52

51

50

*47

46

44

42

41

39

38

43

52

43

39

36

33

33

29

28

27

26.

-

1,457

48.6

2,890

July

23" 26

22

21

19

19

17

16

16

16

16

15

14

12

12

12

14

12

11

14

15

12

11

10

9.7

*9.7

11

9.7

9.7

8.2

lil

440.9

14.2

875

Aug.

7.5

8.5

11

JJS

14

10

8.5

7.5

7.5

6.9

6.6

6.3

6.6

5.6

5.3

5.3

5.0

573

5.9

7.5

8.5

8.5

8.5

8.5

6.9

6.3

5.6

5.6

*7.9

8.2

6.9

238.2

7.68

472

Sept.

6.6

7.2

T72

6.6

6.3

5.9

6.3

5.6

5.3

5.0

4.8

5.0

5.6

5.9

7.2

6.3

5.0

5.0

4.8

4.8

4.8

5.0

5.0

5.0

5.0

5.0

5.0

*5.3

5.6

5.6

-

167.7

5.59

333

Calendar year 1950 : Max 365 Mln - Mean 42.8 Ac-ft 30,960

Water year 1950-51 : Max 166 Mln - Mean 25.1 Ac-ft 18,200

Peak discharge (base. 150 efs). May 2o (ll p.m.) 242 cfs (2.88 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Oct. 19-31, Nov. 2-9, Jan. 7 to Apr. 12, Apr. 19 to May 16 (stagedischarge relation affected by lee during part of winter period); discharge estimated on basis of 

weather records and records for Currant Creek and Water Hollow, near Fruitland.
GREEN RIVER BASIN 241

Water Hollow near Fruitland, Utah

'ocatlon. Lat 40°14', long. 110P59' , between sees. 2 and 11 T 3 S R 10 W 

rlalan > on rlSnt bank 1? miles upstream from mouth and 1\ miles northwest of 

Iralnage area. 15 sq mi, approximately. 

Records available. April 1946 to September 1951.

Uinta meFruitland.

Gage . Water- stage recorder.

Average discharge. 5 years, 6.49 cfs.

Extremes. Maximum discharge during year, 81 cfs Aug. 4 (gage height, 2 15 ft)'

1951946 "51: Maxlmum dlscharge, that of Aug. 4, 1951; minimum recorded, that

Remwhlch"areCfalr g°°d th°Se f°r perlods of lce effect or n° gage-height

from ratina 

^^t^

of Dec. 17, 

record,

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 3

1.2 4.6

1.3 7.4

1.4 11

pr. 4 to Sept. 30

1.1 3.2

1.2 5.6

1.3 8.7

1.5 18

1.6 24

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

6.6

6.6

6.6

6.6

6.6

6.6

6.3

6.6

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

673- 6.0

6.0

6.3

6.3

6.3

6.0

6.0

6.3

6.6

6.0

6.0

6.0

6.0

195.3

6.30

387

Nov.

 6.0

6.6

6.0

6.3

6.3

5.7

6.0

5.7

5.7

bS.O

b5.2

b5.4

b5.6

b5.8

b5.6

b5.8

b6.0

6.0

iil

6.6

7.1

5.7

5,7

b5.6

b5.5

5.4

b5.4

b5.3

b5.2

5.4

-

175.7

5.86

348

Dec.

5.4

> »b5.5

5.5

5.5

170.4

5.50

338

Jan.

5.0

155.0

5.00

307

Feb.

5.0

_

-

-

140.0

5.00

278

Mar.

5.0

155.0

5.00

307

Apr.

5.1

5.2

5.2

»5.3

5.0

5.3

5.3

5.3

5.6

5.3

5.0

5.3

5.3

5.3

5.3

5.0

5.3

5.3

5.6

5.8

5.8

5.6

5.8

5.8

5.8

5.8

5.8

5.8

6.7

671

164.8

5.49

327

May

6.1

6.1

 5.8

5.6

5.8

5.8

6.1

6.1

6.7

7.0

7.0

7.3

7.6

9.0

9.0

8.3

8.7

8.7

9.8

12

16

16

June

19

18

17

15

14

14

13

12

13

12

12

 12

12

12

12

12

12

11

11

12

12

11

17 11

18

19

20

20

21

22

 21

20

358.5

11.6

711

11

11

11

10

10

10

10

372

12.4

738

July

10- 10

10

10

10

9.8

9.8

9.8

9.8

9.8

9.4

9.4

9.4

9.0

9.0

8.7

»8.7

8.3

8.0

8.7

8.3

7.6

7.3

7.3

7.3

7.3

7.3

7.3

7.0

6.7

67T

267.7

8.64

531

Aug.

6.7

6.7

9.2

~3.Z 11

8.5

7.7

7.4

7.4

7.4

7.4

7.4

7.4

7.3

7.0

6.8

6.5

6.5

6.6

7.2

7.8

7.8

7.8

7.7

7.6

7.6

7.6

7.6

*7.6

7.0

7.0

234.5

7.56

465

Sept.

L£

7.0

7.0

6.7

6.7

6.7

6.7

6.

6.

6.

6.

6.

6.

6.

6.

6.1

5.8

578

5.8

6.1

5.8

5.8

5.8

5.8

5.8

5.8

5.8

 5.8

5.8

5.8

-

187.5

6.25

372

Calendar year 1950: Max 26 Min - Mean 8.28 Ac-- ft 5,990

Water year 1950-51: Max 22 Min - Mean 7.06 Ac--ft 5,110

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--Ho gage-height record Dec. 30 to Apr. 3 and Aug. 5-28 (stage-discharge relation affected by 

ice during part of winter period); discharge estimated on basis of weather records and records for 

Currant Creek stations.
242 GREEN RIVER BASIN

Currant Creek near Fruitland, Utah

Location.--Lat 40°12', long. 110°54', in SE£ sec. 21, T. 3 S., R. 9 W. Uinta meridian, on 

rignt bank 600 ft downstream from Deep Creek, 300 ft downstream from bridge on U. S. 

Highway 40, and 3j miles southwest of Fruitland. Prior to Aug % 31, at site 100 ft upstream.

Drainage area.--142 sq mi.

Records available.--January 1935 to September 1951.

Gage.--Water-stage recorder. Prior to Sept. 11, 1938, staff gage and Sept. 11, 1938, to 

A~ug. 20, 1948, water-stage recorder at site 500 ft upstream at different datum. Aug. 20, 

1948, to Aug. 31, 1951, water-stage recorder at site 100 ft upstream at different datum.

Average discharge.--16 years, 47.9 cfs.

Extremes.--Maximum discharge during year, 304 cfs May 21 (gage height, 1.85 ft, site and 

datum then in use); minimum, 23 cfs on several days in December and March and on 

Sept. 11.

1935-51: Maximum discharge, 1,040 cfs July 26, 1941 (gage height, 5.85 ft, site and 

datum then in use), from rating curve extended above 425 cfs; minimum recorded, 4 cfs 

Mar. 12, 1941, but may have been less during periods of ice effect.

Remarks.--Records fair. Currant Creek feeder canal, constructed by Bureau of Reclamation 

in 1936, diverts water from headwaters of Currant Creek to Strawberry Reservoir, from 

which it is diverted through Strawberry tunnel to Great Basin for irrigation in Strawberry Valley project.

Rating tables, water year 195O-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-3, Apr. 13 to June 29)

Oct. 1 to Aug. 30 Aug. 31 to Sept. 30

0.6 

.8 

1.3 

2.0 

2.5

199

315

0.9

1.0

1.1

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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

Ae-fl

Oct.

34

34

34

34

33

33

33

33

33

34

33

33

32

33

33

34

35

34

34

35

34

35

35

36

36

36

36 

37 

37 

37

*37

1,067

34.4

2,120

Nov.

36

36

36

36

35

35

35

35

36

32.

34

34

34

36

35

33

36

36

43

39

43

4O

38

36

36

36

35 

35 

34 

36

"

1,081

36.0

2,140

Dec.

36

32

34

37

36

32

37

36

36

35

35

35

34

*35

35

34

34

33

34

34

31

3T

53

34

33

32

32 

33 

36 

34

34

1,057

34.1

2,100

Jan.

31

33

37

37

36

34

31

33

34

34

36

34

34

36

36

36

36

36

36

33

36

 38

37

37

37

36

36 

37 

36 

36

b35

1,OS4

35.3

2,170

Feb.

b36

38

40

40

41

42

42

43

4?

43

43

43

41

38

40

40

39

40

39

36

*40

40

40

3736'

36

38 

36

-

1,109

39.6

2,200

Mar.

34

34

33

35

*34

34

34

36

35

34

32

33

38

36

38

38

34

35

35

37

40

40

38

39

41

42

M40 

43

43

1,147

37.0

2,280

Apr.

43

45

48

50

49

50

54

56

*58

59

54

56

60

65

75

74

77

81

90

88

85

80

86

94

90

90

91 

96 

99 90"

-

2,133

71.1

4,230

May

86

*85

*83

91

95

108

118

129

124

124

142

159

145

129

145

*128

122

124

154

184

232

199

197

211

203

221

219 

*209 

190 

173

143

4,671

151

9,260

June

122

117

110

103

100

99

97

94

88

86

83

81

77

75

73

 72

71

68

65

67

77

73

70

65

60

57

53 

50 

49 

47,

2,349

78.3

4,660

July

47

44

43

42

42

41

41

40

39

39

38

37

37.

36

36

35

34

34

34

35

a37

a35

a33

a 32

831

 31

33 

34 

33 

31

30

'1,134

36.6

2,250

Aug.

30

30

38

46

36

39

33

31

31

30

30

30

29

28

28

27

25

25

26

28

31

31

31

*31

30

28

28 

28 

a28 

a28

 28

942

30.4

1,870

Sept.

27

?7.

f 6

25

25

25

25

24

24

24

24

24

25

25

25

25

23

25

25

24

2t

23

25

25

25

25

25 

*25 

25 

24

747

24.9

3,, 480

Calendar year 1950: Max 451 Mln 30 Mean 73.7 Ae-ft 53,330

Water year 1950-51: Max 232 Mln 24 Mean SO. 8 Ae-ft 36,760

Peak discharge (base. 200 cfs).--May 21 (5 a.m.) 304 cfs (1.85 ft). 

* Discharge measurement made on this day. 

a Mo gage-height record; discharge estimated on basis of records for Currant Creek below Red Ledg? 

Hollow and Water Hollow near Fruitland.
GREEN RIVER BASIN 243

Strawberry River at Duchesne, Utah

Location. Lat 40 0 10', long. 110°25', in SW-J-NEi sec. 2, T. 4 S,, R. 5 W. Uinta meridian, 

 on left bank at downstream side of bridge, three-quarters of a mile west of Duchesne, 

and l| miles upstream from mouth.

Drainage area.--1,040 sq mi, approximately (includes approximately 170 sq mi tributary to 

strawoerry Reservoir).

Records available. June 1908 to November 1910, March 1914 to September 1951.

Gage --Water-stage recorder. Altitude of gage is about 5,500 ft. Prior to Oct. 26, 1948, 

chain or staff gages at present site at various daturas.

Average discharge. 37 years (1914-51), 158 cfs.

Extremes --Maximum discharge during year, 840 cfs July 21; minimum observed, 40 cfs Jan. 9 

(uscharge measurement).

1908-10, 1914-51: Maximum discharge observed, 3,230 cfs May 27, 1922, from rating 

curve extended above 1,500 cfs; minimum observed, 1 cfs for several days in July 1931.

Remarks. Records good except those for periods of ice effect, which are fair. Diversions 

acove station for irrigation. Transmountain diversion from Strawberry Reservoir above 

station to Great Basin (see p. 238). Records of water temperatures and sediment loads 

are given in Water-Supply Paper 1200.

Revisions (water years).--W 1009: 1937-41(M).

Rating table, water year 1950-51, except periods of Ice effect

(gage height, In feet, and discharge, In cubic feat per second)

(Shifting-control method used May 24-:50)

0.7 

1.0 

1.5

51

80

163

2.0 

3.0 

3.5

288

611

795

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

93

93

94

94

96

94

93

93

96

92

92

90

88

86

86

88

86

85

*84 85

88

88

88

89

89

89

93

98

W

94

94

2,814

90.8

5,580

Nov.

96

96

96

96

94

93

92

90

90

76

73

55

94

98

99

83

94

102

111

127

111

123

113

111

98

98

96

96

93

98

-

2,930

97.7

5,810

Dec.

*100

90

83

108

99

79

110

115

TOT

102

99

99

99

98

99

98

94

84

92

90

89

76

73 76"

78

74

78

78

80

b90

b85

2,821

91.0

5,600

Jan.

83

62

80

(*)

. b85

2,605

84.0

5,170

Feb.

, *b92

90

84

85

96

96

_

_

-

2,567

91.7

5,090

Mar.

85

93

90

81

98

*94

94

94

100

93

79

80

98

92

92

96

83

76

SS

98

94

-g* 108

89

92

98

99

93

88

90

94

2,841

91.6

5^640

Apr.

98

93

S*

100

111

*105

108

115

116

125

130

125

134

161

199

226

230

228

223

226

220

220

201

208

226

226

223

220

216

249

-

5,156

172

10,230

Calendar year 1950: Max 863 Min - Mean 181

May

*230

223

210

201

'2T5T

206

226

249

274

300

320

353

June

487

m

422

384

350

329

311

285

271

268

260

246

381 230

387' 216

*406

378

341

335

359

454

597

618

600

618

622

647

*690 '579"

654

590

531

12,880

415

25,550

206

196

194

192

187

181

210

201

196

178

176

170

*163

151

139

134

-

7,381

246

14,640

July

130

128

122

120

111

110

100

93

89

89

85

83

80

77

73

72 76-

72

78

103

365

TBT

*136

122

118

110

105

106

115

106

99

3,434

111

6,810

Aug.

102

226

203

*421

m

320

123

113

110

105

98

98

93

90

88

83

80

77

BE

83

*93

98

96

139

100

92

86

81

83

88

86

3,846

124

7,630

Sept.

81

Tff

78

78

77

73

71

71

66

63

59

61

64

62

60

57

59

59

56

56

54

51

55

*56

56

56

56

59

63

65

-

1,903

63.4

3,770

Ac-ft 130,800

Water Water year year 1950-51: 1950-51: Max Max 690 690 Min Min - - Mean Mean 140 140 Ae--ft Ae--ft 101,500 101,500

Peak discharge (base. 700 efs). May 27 (8 p.m.) 709 cfs (5.12 ft); July 21 (5 a.m.) about 840 cfsj 

Hug. 2 (Z a.m.; 744 efs (3.31 ft); Aug. 4 (11 a.m.) 772 cfs (3.44 ft). 

* Discharge Discharge measurement measurement made on this day. 

b Stage-discharge relation affected by lee.
244 GREEN RIVER BASIN

Lake Pork above Moon Lake, near Mountain Home, Utah

Location. Lat 40°36', long 110°31', in NW^ sec. 1, T. 2 N., R. 6 W. Uinta meridian, on 

right bank 2,000 ft upstream from head of Moon Lake at maximum stage, 2 miles upstream 

from Brown Duck Creek, and 16 miles northeast of Mountain Home.

Drainage area.--78 sq mi, approximately.

Records available. July 1942 to September 1951. April 1933 to September 1934, published 

as West i'ork of Lake Fork above Moon Lake, near Mountain Home.

Sage.--Water-stage recorder. Altitude of gage is about 8,200 ft. April 1933 to Septembe1' 

T934 at site 2| miles upstream at different datum.

Average discharge. 9 years, 111 cfs.

Extremes.--Maximum discharge during year, 1,550 cfs June 16 (gage height, 4.09 ft); minimum not determined, occurred during period of ice effect or no gage-height record.

1933-34, 1942-51: Maximum discharge, 2,700 cfs June 26, 1944 (gage height, 4.27 

ft), from rating curve extended above 700 cfs; minimum daily recorded, 13 cfs Apr. 14, 

1933.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 25-27)

Oct. 1 to May 27 May 28 to Sept. 30

0.6 25

1.0 62

1.5 139

2.0 

2.5 

3.5

264

439

975

0.7

1.0 

1.5 159

2.0 

2.5 

3.6

305

500

1,140

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

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.

44

4T

44

42

41

40

39

40

39

38

38

38

37

38

38

38

37

36

36

36

35

34

34

34

34

*3335-

37

37

37

36

1,167

37.6

2,310

Nov.

32

37

33

35

34

34

35

35

29

b21_

b28

32

32

32

32

b31

32

33

34

34

38

3T

33

33

33

32

32

32

32

31

-

973

32.4

1,930

Dec.

30

b28

b27

b27

b28

1J29

*b30

31

3T

30

30

30

30

30

29

29

b26

b27

27

27

b26

b25

b26

26

b26

b25

b24

b24

25

b25

b2_2

850

27.4

1,690

Jan.

> b24

26

792

£5.5

1,570

Feb.

24

_

_

-

672

24

1,330

Mar.

23

713

23

1,410

Apr.

(*)

36

-

1,080

36

2,140

May

45

43

40

4T

47

54

66

64

*67

71

81

88

81

81

74

70

70

83

96

124

165

172

213

250

321

476

720

*850

537

844

790

7,020

226

13,920

June

580

408

330

285

266

263 2~6T

305

333

308

305

377

518

686

904

1,110

 59TT

874

832

714

566

457

457

478

518

546

570

551

514

457

-

15,779

526

31,300

July

428

436

4W

350

310

290

260

240

*221

207

198

180

162

152

148

145

152

143

138

150

193

148

128

124

120

111

107

103

102

103

£2.

6,049

195

12,000

Aug.

92

103

134

253 ITS'

157

*122

111

100

95

114

105

96

90

85

79

79

78

75

102

103

107

103

95

79

75

72

69

79

81

75

3,180

103

6,310

Sept.

74

7T

68

67

64

61 '58

57

55

55

54

*53

53

52

50

49

48

48

47

46

45

45

44

44

44

43

42

4T

43

42

-

1,564

52.1

3,100

Calendar year 1950: Max 928 Min - Mean 120 Ac-ft 87,070

Water year 1950-51: Max 1,110 Min - Mean 109 Ac-ft 79,010

Peak discharge (base, 1,000 cfs). May 30 (9 p.m.) 1,040 cfs (3.46 ft); June 16 (8:30 p.m.) 1,550 

cfs i*.09 rt;.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 8 to May 8, July 4-8 (stage-discharge relation affected by ice 

during part of winter period); discharge estimated on basis of 1 discharge measurement, weather records, and records for Rock Creek near Mountain Home.
GREEN RIVER BASIN 245

Brown Duck Creek near Mountain Home, Utah

Location. Lat 40°34', long. UO^Sl', in NE^ sec. 13, T. 2 N., R. 6 W. Uinta meridian, on 

rignt bank a quarter of a mile upstream from mouth, 1? miles northwest of Moon Lake 

Dam, and 12 miles northwest of Mountain Home.

Drainage area. 15 sq mi, approximately.

Records available. April 1933 to September 1934, October 1942 to September 1951.

Gage . Water-stage recorder and Parshall flume. Altitude of gage is about 8,200 ft. Prior 

 fo October 1942, at different datum.

Average discharge. 10 years, 9.30 cfs.

Extremes . Maximum discharge during year, 140 cfs May 27 (gage height, 2.52 ft), from 

rating curve extended above 90 cfs; minimum not determined, occurred during period of 

no gage-height record.

1933-34, 1942-51: Maximum discharge recorded, that of May 27, 1951; minimum recorded, 0.9 cfs Oct. 29, 1942, but may have been less during periods of no gage-height record.

Remarks . --Records good except those for periods of no gage-height record, which are poor. 

Flow regulated by Brown Duck Lake Reservoir (usable contents, 3,720 acre-ftj. Since 

July 1946, about 0.7 cfs diverted above station for power purposes.

Rating tables, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second! 

(Shifting-control method used May 24, 25)

Oct. 1 to May 25 May 26 to Sept. 30

.5

1.0 

2.0 60

0.04 

.1 

.3 

.5

3.9 

6.7

11

1.0 

2.0 

2.3

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

3.0

3.0

3.0

3.0

3.0

3.1

3.2

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

2.8

2.8

2.8

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.3 2~7F

*2.4

2.2

91.2

2.94

181

Nov.

2.2

2.5

-

74.7

2.49

148

Dec.

(*)

2.5

77 .5

2.5

154

Jan.

(*)

2.5

77 .5

2.5

154

Feb.

2.0

_

_

-

56.0

2.0

111

Mar.

2.0

62.0

2.0

123

Apr.

3.0

-

90.0

3.0

179

May

I"

J 6.3

6.5

*6.7

7.1

8.7

9.4

9.2

9.9

9.4

8.9

8.7

9.4

12

17

24

27

31

41

47

79

101

*83

*75

59

819.2

26.4

1,620

June

50

4T

38

33

30

29

30

32

32

29

30

31

32

34

36

38

37

35

33

34

35

31

29

27

25

24

23

22

20

~

19

940

31.3

1,860

July

18

17

16

15

14

13

13

13

*12Tg45

4T

41

39

38

37

40

36

36

36

37

35

34

34

33

33

33

33

32

32

31

909

29.3

1,800

Aug.

31

33

34

40

3T

33

(*)

 27

880

28.4

1,750

Sept.

27

2T

24

19

13

6.

5.

3.

3.

3.

3.-

*3.

3.

3.3-.

3.

3.

3T

3.

3.

3.'

3.,

3.

3.

3.

3.

3.

3.

3.

3.

-

200.

6.6

39

Calendar year 1950 : Max 63 Mln - Mean 11.2 Ac -ft 8,110 

Water year 1950-51 : Max 101 Mln - Mean 11.7 Ac-ft 8,480

Discharge measurement made on this day.

256684 O - 53 - 17
246 GREEN RIVER BASIN

Moon Lake Reservoir near Mountain Home-, Utah

Location. Lat 40°33'40", long. 110°29'30", in NE£ sec. 19, T. 2 N., R. 5 W. Uinta meriaian, at dam on Lake Fork, l| miles downstream from Brown Duck Creek, 11 miles upstream from Yellowstone Creek, and 12f miles northwest of Mountain Home.

Drainage area. 108 sq mi.

Records availably. December 1937 to September 1951.

Gage Mercury indicating gage. Datum of gage is mean sea level (levels by Bureau of 

Reclamation).

Extremes. Maximum contents observed during year, 36,770 acre-ft July 2, 3 (elevation, 

8,138.30 ft); minimum observed., 5,390 acre-ft May 22, 23.

1937-51: Maximum contents observed, 37,560 acre-ft July 10, 11, 1950 (elevation, 

8,139.30 ft); minimum observed, 226 acre-ft Sept. 30, 1946, but may have been less 

during October 1946 when gage was not read.

Remarks.--Reservoir formed by earth-fill, rock-faced dam with concrete core. Storage 

Began Dec. 9, 1937. Capacity, 35,800 acre-ft between elevations 8,072.00 ft (crest of 

original outlet of lake about 2,000 ft upstream from dam) and 8,137.00 ft (top of 

spillway gates). Elevation of spillway crest is 8,121.00 ft and elevation of sill of 

outlet works is 8,064.16 ft. Dead storage between sill of outlet and crest of original 

outlet of lake, 2,050 acre-ft. Dead storage below sill of outlet, 11,690 acre-ft. 

Total dead storage, 13,740 acre-ft. Figures given herein represent usable contents 

Water is used for irrigation on lands under Moon Lake Water Users 1 Association and 

Uinta Indian Irrigation projects. Cage usually read between 7 and 10 a.m.

Cooperation.--aage-helght record furnished by Moon Lake Water Users' Association.

Contents, In acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

31

Oct.

10,990

11,020

11,040

11,070

11,120

11,180

11,200

11,200

11,200

11,150

11,100

11,070

10,940

10,860

10,760

10, 700

10,780

10,880

10,960

10,960

11,020

11,040

11,070

11,100

11,150

11,200

11,260

-

-

-

11,520

Nov.

_

-

-

-

-

_

_

-

12,140

-

_

-

-

-

-

12,660

-

_

-

-

_

-

-

-

-

_

-

-

-

13,710

-

Dec.

_

-

_

_

-

_

14,220

-

-

14,330

_

_

-

-

-

14,840

_

_

_

-

_

_

-

_

-

.

-

15,510

-

_

15,740

Jan.

_

.

_

_

-

.

_

_

_

-

16,330

_

_

.

-

_

_

_

_

-

.

_

_

17,130

-

_

17,220

_

_

a!7,380

Feb.

al8,930

_

_

-

Mar.

_

_

19,150

_

_

_

-

_

_

_

-

_

_

_

_

-

_

_

_

-

_

_

_

20,410

20,470

Apr.

20,500

-

_

_

20,790

20,720

20,790

_

20,950

-

21,020

20,980

20,880

20,760

20,630

20,470

20,380

20,180

20,090

19,740

19,370

18,990

18,740

18,400

18,040

17,520

17,220

16,740

16,240

15,650

-

Hay

.

14, 700

14,190

13,770

13,290

12,820

12,200

11,570

10,960

10,360

9,880

9,340

8,840

8,460

7,860

_

6,790

6,300

5,900

5,460

5,410

5,390

5,390

5,410

5,460

6,100

7,160

9,190

10,760

12,330

14,270

June

15,360

16,150

16,650

17,040

17,160

17,130

17,130

17,310

17,490

17,670

17,760

17,950

18,280

18,950

20,470

21,920

24,040

25,620

27,040

-

29,500

30,340

31,000

31,740

32,640

33,620

34,680

35,420

36,150

36,500

-

July

36,700

36,770

36,770

36,620

36,460

36,380

36,230

36,070

35,960

35,760

35,530

35,220

34,910

34,570

34,110

33,660

33,240

32,940

32,420

31,820

31,560

31,120

30,710

30,270

29,830

29,470

29,060

28,600

28,060

27,680

27,180

Aug.

26,830

26,410

26,160

26,130

26,410

26,720

26,760

26,830

26,830

26,800

26,800

26,690

26,550

26,380

26,060

25,680

25,300

24,960

24,620

24,210

24,010

23,740

23,540

23,400

23,240

23,010

22,810

22,580

22,210

21,950

21,690

Sept.

21,500

21,050

20,820

20,6OO

20,340

20,090

19,810

19,520

19,080

18,960

18,590

18,280

18,010

17,550

17,190

_

16,270

15,300

15,020

14,730

14,440

14,130

13,490

13,150

12,880

12,600

Monthly elevation and contents, water year October 1950 to September 1951

Date

Dec. 31.. ..................

Calendar year 1950. ......

Elevation 

(feet)

8,107.65

-

8,107.50

8,125.40

Contents 

(acre-feet)

11,520

13,710

15,740

-

a!7,380

a!8,930

20,470

15,650

14,270

36,500

27,180

21,690

_

Change in contents 

during month 

(acre-feet)

+580

+2,190

+2,030

+ 720

+ 1,640

+1,550

+1,540

-4,820

-1,380

+22,230

-9,320

-5,490

-9,090

+1,660

a No record of elevation; contents interpolated.
GREEN RIVER BASIN 

Lake Fork below Moon Lake, near Mountain Home, Utah

247

Location. Lat 40°33 l 30lt , long. 110°29 I 30", in E| sec. 19, T. 2 N., R. 5 W. Uinta meridian, 

on right bank 2,000 ft downstream from Moon Lake Dam, 2 miles downstream from Brown Duck 

Creek, and 12 miles northwest of Mountain Home.

Drainage area. 110 sq mi, approximately.

Records available. April 1942 to September 1951. September 1921 to September 1934 (fragmentaryj puonshed as "West Pork of Lake Fork."

Sage. Water-stage recorder. Altitude of gage is 7,920 ft (from river-profile map). Prior 

 To April 1942, at dam site 2,000 ft upstream at different datum.

Average discharge. 9 years, 129 cfs.

Extremes. Maximum discharge during year, 642 cfs June 30 (gage height, 3.20 ft); no flow 

OeTT~28 to Apr. 4, Apr. 8-10 (gates closed).

1921-34, 1942-51: Maximum discharge recorded., 2,180 cfs June 19, 1949 (gage height, 

4.83 ft), from rating curve extended above 860 cfs; no flow at times when reservoir 

gates are closed.

Remarks. Records good. Flow regulated by Moon Lake Reservoir (see preceding page). "No 

diversion above station.

Rating table, water year 195O-51 (gage height, in feet, 

and discharge, In cubic feet per second)

1.2

1.3

1.4

1.5

3.0

9.0

19

33

1.7 

2.0 

2.5 

3.0

72

147

312

533

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

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.

30

30

30

30

30

33

37

37

77

90

90

90

90

90

90

33

4.2

4.2

7.8

13

15

15

15

15

15

15

11

0

C

0

0

1,037.2

33.5

2,060

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

c

0

0

9.6

20

6.9

0

0

0

17

81

105

108

108

108

123

134

170

198

195

195

195

220

244

240

272

290

TJ5C

290

3,619.5

121

7,180

May

290

286

286

282

279

347

376

372

367

*367

363

359

359

359

355

351

347

343

339

261

207

272

294

294

286

220

136

T47

173

182

188

9,082

293

18,010

June

192

192

195

247

312

328

250

364

294

294

294

290

290

171

134

147

150

153

153

156

156

159

112

95

35

123

150

188

286

572

6,245

208

12,390

July

427

432

TSZ

427

388

367

347

332

332

332

363

384

388

 384

384

380

396

401

401

396

384

376

351

335

335

335

347

351

351

328

316

11,502

371

22,810

Aug.

305 '279"

244

150

84

139

»147

147

*147

147

179

195

195

247

282

286

279

275

275

272

261

244

237

217

214

214

214

240

254

230

224

6,823

220

13,530

Sept.

204

198

188

185

182

182

182

182

182

182

182

 195

201

217

227

227

227

217

201

198

176 '173

182

182

179

179

179

179

176

132

-

5,696

190

11,300

Calendar year 1950 : Max 869 Mln 0 Mean 141 Ac-ft 102,100

Water year 1950-51 : Max 432 Mln 0 Mean 121 Ac-ft 87,280

* Discharge measurement made on this day.
248 GREEN RIVER BASIN

Yellowstone Creek below Swift Creek, near Altonah, Utah

Location. Lat 40 0 35', long. 110°21', in SE£ (revised) sec. 4, T. 2 N., R. 4 W, Unita meridian, on left tank a quarter of a mile downstream from Swift Creek and 13j miles 

north of Altonah.

Records available. August 1949 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,990 ft (from river-profile map).

Extremes. Maximum discharge during year, 1,130 cfs June 16 (gage height, 4.74 ft); minimum, 37 cfs May 2, but may have been less during periods of ice effect or no gage-height 

record.

1949-51: Maximum discharge, that of June 16, 1951; minimum recorded, that of May 2, 

1951.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

whicn are fair.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

2.4 

2.7 

3.0 131

3.5 

4.0 

4.5

282

525

896

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

67

7068"

67

66

64

64

64

63

63

63

62

62

61

61

59

59

59

58

58

57

57

*58

59

59

61

59

62

61

58

1,919

61.9

3,810

Nov.

56

58

5T

57

56

56

55

54

50

b42

b47

b50

52

51

50

51

51

51

52

52

*53

51

50

49

51

50

50

49

48

51

-

1,548

51.6

3,070

Dec.

48

47

b46

b46

b46

b46

b47

b48

49

49

49

48

48

48

48

47

47

46

47

47

b46

b46

b45

b45

b44

b43

b43

b44

b45

b46

b46

1,440

46.5

2,860

Jan.

b46

b44

b44

b45

*b43

b42

b42

b42

b43

b44

b45

b45

b45

b45

b45

b45

b45

b45

b43

b42

b44

46

1,384

44.6

2,750

Feb.

45

_

-

1,260

45

2,500

Mar.

( )

46

1,426

46

2,830

Apr.

44

*45

43

43

43

43

46

45

-

1,320

44.0

2,620

May

43

42

42

45

47

53

57

56

56

56

62

67

62

63

59

55

54

62

70

88

126

124

148

164

216

331

569

*738

753

671

582

5,531

178

10,970

June

430

318

260

226

207

198

25T

233

264

253

253

298

380

508

629

836

754

629

569

525

430

357

353

357

380

385

400

390

366

318

11,707

390

23,220

July

*302

294

282

271

250

226

213

201

189

178

172

164

156

151

148

148

170

167

151

164

189

161

146

141

134

126

131

126

126

129

I2i

5,528

178

10,960

Aug.

131

164

268

390

282

250

210

*192

172

151

144

134

124

117

113

108

106

106

124

167

159

154

156

156

136

136

124

126

144

148

136

5,028

162

9,970

Sept.

129

ISO

115

110

108

104

100

98

92

92

*90

88

86

85

85

85

96

94

90

85

78

76

74

74

21

71

71

71

73

71

2,682

89.4

5,32C

Calendar year 1950: Max 844 Mln 40 Mean 133 Ac-ft 96,150

Water year 1950-51: Max 836 Mln - Mean 112 Ac-ft 80,880

Peak discharge (base. 700 efs). May 27 (9 p.m.)'951 cfs (4.58 ft)j June 16 (9 p.m.) 1,130 cfs 

(4.74 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by lee.

Note. No gage-height record Jan. 22 to Apr. 23 (stage-discharge relation affected by Ice during 

part period); discharge estimated on basis of 1 discharge measurement, weather records, and records 

for Yellowstone River near Altonah.
GREEN RIVER BASIN 

Yellowstone Creek near Altonah, Utah

249

Location. Lat 40°31'00", long. 110°20'30", in SW^NE-j sec. 4, T. 1 N., R. 4 W. Uinta meridian, on left bank ij miles downstream from power plant of Moon Lake Electric Association, 2 miles downstream from Hell Canyon, 5 miles upstream from mouth, and 8-5- miles 

northwest of Altonah.

Drainage area. 131 sq mi.

Records available. October 1944 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,430 ft (from river-profile map).

Average discharge.--? years, 136 cfs.

Extremes. Maximum discharge during year, 1,110 cfs June 16 (gage height, 3.76 ft); minimum, 35 cfs Nov. 18, but may have been less during periods of ice effect or no gageheight record.

1944-51: Maximum discharge, 1,880 cfs June 19, 1949 (gage height, 4.55 ft); minimum 

recorded, 27 cfs Nov. 14, 1948.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wnTch are fair. Some diurnal fluctuation caused by power plant lj miles upstream.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.1 

1.4 

1.8

43

71

137

2.3

3.0 

4.0

273

608

1,340

Discharge, in cubic feet per second, water year October 1950 to September 1951

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

26

29

30

31

Total

Mean

Ac- ft

Oct.

83

81

80

80 

80

78

76

76

74

72

72

72

71

12

71

71

70

69

69

67

68

68

68

67

68

67

67

66

68

*67

61

2,219

71.6

4,400

Nov.

61

59

57

62 

61

62

61

60

56

b50

b53

b56

b56

56

b58

b60

62

63

62

64

*62

59

63

61

63

61

61

61

58

60

-

1,788

59.6

3,550

Dec.

60

b59

b58

b57 

b57

b57

b57

b58

b58

b59

59

59

59

59

57

b58

59

b58

58

b58

b57

b56

b55

b54

b53

b53

b53

b54

b55

b55

b54

1,763

56.9

3,500

Jan.

 b51

> 53

1,613

52.0

3,200

Feb.

» 51

(*)

J 55

54

54

b53

b52

b53

b52

b52

b53

53

b51

b50

b49

49

b49

b48

b49

b49

b49

_

.

-

1,433

51.2

2,840

Mar.

b49

b50

b50

b50 

bSO

b51-

51

53

.52

50

b50

b51

*b51

*b51

b51

b51

b51

b51

b52

b53

b54

b56

57

5855"

56

54

b54

b54

53

51

1,621

52.3

3,220

Apr.

47

48

48

49

i§

49

47

48

49

49

50

46

48

50

49

49

51

49

50

53

54

49

50

54

*52

56

51

51

§i

BT

-

1,504

50.1

2,980

May

52

48

48

51 

54

59

70

69

68

67

72

84

78

80

76

71

69

75

86

106

150

150

176

188

240

366

613

*875

84T

827

767

6,576

212

13,040

June

590

417

337

291 

256

247

24T

284

329

313

295

349

427

608

715

868

IBT

721

651

639

521

417

403

398

431

441

446

431

*403

367

-

13,696

457

27,170

July

333

35T

313

295

277

253

240

225

207

199

194

186

176

169

159

161

181

191

169

173

210

181

166

152

150

141

144

141

139

144

131

6,121

197

12, 140

Aug.

141

164

309

ill 

333

280

240

*225

200

180

165

150

140

130

128

126

125 "130

150

185

175

167

172

170

160

155

145

150

160

165

155

5,752

186

11,410

Sept.

150

140

130

125 

120

115

112

110

105

108

*102

99

94

93

94

90

106

1Q3

96

90

84

84

83

84

81

79

79

79

81

81

-

2,997

99.9

5,940

Calendar year 195O: Max 903 Mln 46 Mean 148 Ac-ft 107,400

Water year 1950-51: Max 875 Mln - Mean 129 Ac-ft 93,390

Peak discharge (base. 700 cfs). May 28 (10 p.m.) 996 cfs (3.58 ft); June 16 (11:30 p.m.) 1,110 cfs 

(3.76 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 16 to Feb. 9, Aug. 9 to Sept. 11 (stage-discharge relation 

affected by Ice during most of winter period); discharge estimated on basis of weather records and 

records for Yellowstone Creek below Swift Creek, near Altonah.
250 GREEN RIVER BASIN

Lake Fork near Dpalco, Utah

Location. Lat 40°15'30", long. 110°13'00", in NE^NE^ sec. 4, T. 3 S., R. 3 W. Dinta merldlan, on right bank a quarter of a mile upstream from bridge on State Highway 86, lj 

miles south of Upalco, 9 miles northwest of Myton, and 10 miles upstream from mouth.

Drainage area. 418 sq mi.

Records available.--October 1942 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 5,480 ft (from topographic map).

Average discharge.--8 years (1943-51), 60.8 cfs.

Extremes. Maximum discharge during year, 605 cfs June 21 (gage height, 3.12 ft); minimum, 

 O.y cfs Oct. 1-15.

1942-51: Maximum discharge, 4,520 cfs June 26, 1944 (gage heignt, 6.05 ft), from

rating curve extended above 1,400 cfs; minimum daily, 0.1 cfs Apr. 16, May 22, 1943,

May 8-10 (corrected), 1949.

Remarks. Records good except those for periods 01 ice effect or doubtful or no gageheight record, which are poor. Many diversions above and below station for irrigation. 

Flow partly regulated by Moon Lake Reservoir.

Rating table, water year 195O-51, except periods of Ice effect

(gage height. In feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 13, Aug. 1, 2)

0.2 

.4 

.6 

.7

0.1

.4

.6

1.5

3.0

0.9

1.1

74

2.1 140

2.4 245

3.0 540

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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? 0.2

..2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.4

TT

.4

.4

.4

.4

.4

.4

**.4

8.7

0.28

17

Nov.

0.4 ~74"

.4

'. .

.4

.4

.4

.4

29

61

65

71

76

71

-55 110

*59

52

47

47

49

47

47

46

45

46

-

1,057.8

35.3

2,100

Dec.

46

39

81

92

1e

59

114

77*

62

88

88

85

85

79

81

78

79

70

81

72

70

52

55

2,146

69.2

4,260

Jan.

(*)

60

1,860

60

3,690

Feb.

, 60

(*)

 70

58

58

58

64

57

_

-

1,795

64.1

3,560

Mar.

.56

65

54

64

68

64

64

68

*70

TT

41

43

46

46

47

40

30

30

42

39

42

40

30

29

32

27

22

8.0

4.9

*3.0

2.0

1,263.9

40.8

2,510

Apr.

0.9

.6

.9

.6

.6

.6

.6

.5

.5

_._4

.4

.4

.4

.4

.4

.5

.5

.6

.6

.6

.8

.6

.5

.5

.5

.6

.6

.6

5.8

4TJ

-

25.8

0.86

51

May

0.6

.6

.4

TT

.4

.5

.6

*1.5

.7

1.0

.6

.6

.6

.6

1.1

1.1

1.0

6.5

1.5

2.2

11

9.6

2.7

3.6

2.7

23

72

239

T7T

*152

132

841.1

27.1

1,670

June

40

12

8.0

4.3

3.0

3.C

2.8

2.2

14

15

9.8

6.6

14

106

58

204

298

TTZ

92

66

68

50

35

25

*16

11

3.8

5.4

1.5 STB"

-

1,322.2

44.1

2,620

July

8.2

12

4.8

2.7

2.0

1.5

1.4

1.8

2.7

1.8

1.4

2.0

2.2

2.1

2.0

2.2

2.6

6.6

2.8

12

16Tt~

9.4

6.0

4.5

3.5

3.0

2.5

10

.6

.5

144.8

4.67

287

Aug.

0.9

1.4

16

91

3tf

9.6

d3.6

d2.4

dl.6

dl.2

dl.O

d.8

d.7

d.6

dTS

d.6

d.6

d.6

d.7

d.9

dl.6

dl.5

dl.4

d6.2

d2.6

dl.8

dl.6

*d2.0

2.8

3.6

1.6

211.5

6.82

420

Sept.

9.3

T7T

1.0

1.0

.7

.7

.6

.6

..6

^_5

.6

.6

.5

.6

.6

.6

.6

1.1

.9

.6

.6

.6

.6

.6

.5

.5

.5

.6

1.0

.9

-

29.3

0.98

58

Calendar year 1950: Max 763 Min 0.2 Mean 52.8 Ac-ft 38,200

Water year 195O-51: Max 298 Mln 0.2 Mean 29.3 Ac-ft 21,240

* Discharge measurement made on this day.

** Field estimate made on this day.

d Doubtful gage-height record; discharge computed from recorder graph.

Note.--Stage-discharge relation affected by ice Dec. 23-31, Feb. 12-23. No gage-height record Jar. 

1 to Feb. 11, June 22-24, July 25-28, 31, Aug. 1; discharge estimated on basis of 2 discharge measurements, weather records, and records for Lake Fork below Moon Lake, near Mountain Home, and Yellowstone River near Altonah.
GREEN RIVER BASIN 251

Duchesne River at Myton, Utah

Location. Lat 40°12 I , long. 110°03', in NW£ sec. 25, T. 3 S., R. 2 W. Uinta meridian, on 

left bank at Myton, 3 miles downstream from Lake Pork.

Drainage area.--2,750 sq mi, approximately.

Records available. October 1899 to September 1951 (fragmentary 1903-11).

Gage.--Water-stage recorder. Datum of gage is 5,061.40 ft above mean sea level, datum of 

 T929. Prior to Oct. 14, 1933, staff and chain gages at several sites within half a mile 

of present site at various daturas.

Average discharge.--43 years (1899-1902, 1911-51), 600 cfs.

Extremes.--Maximum discharge during year, 3,700 cfs May 24 (gage height, 5.50 ft); minimum, 

aa crs Sept. 21, 24.

1899-1951: Maximum discharge observed, 12,800 cfs June 10, 1922 (gage height, 7.94 

ft), from rating curve extended above 8,000 cfs; minimum, less than 1 cfs July 16, 1931, 

and or several days in- August and September 1934.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Large diversions above station for irrigation. Plow affected by reservoirs above station.

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-28, May 28)

Oct. 1 to May 28 May 29 to Sept. 30

1.6 69

2.0 217

2.5 448

3.0 751

3.5 1,200

4.5 2,450

5.1 3,270

1.6 8

1.7 25

2.0 117

2.5 313

3.0 583

4.0 1,550

5.5 3,700

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

230 

242

538

230

221

213

201

205 

205

201

197

193

189

173

147

147

132

132

128

*132

135

128

125

117

107

114

117

128

177

177

181

5,262

170

10, 440

Nov.

205 

189

197

205

213

205

193

181 

185

189

213

308

363

417

392

354

378

443

502

525

459

475

443

412

392

392

378

*368

359

354

-

9,889

330

19,610

Dec.

368 

321

303

433

475

407

412

525 

448

443

448

453

448

428

428

433

417

373

392

397

*397

335

299

317

354

335

331

303

317

359

402

12,101

390

24,000

Jan.

340 

251

263

373

401

383

294

246

280

8,997

290

17,850

Feb.

340

*349

387

387

335

299

308

349

331

_

-

9,545

341

18,930

Mar.

317 

331

326

344

349

*349

340

349 

363

335

294

268

277

294

281

290

246

217

255

294

285

277

263

225

242

259

263

238

*213

201

221

8,806

284

17,470

Apr.

225 

209

185

177

189

185

169

169 

166

135

158

139

114

96

147

193

230

246

234

238

242

238

221

255

*Z!25~

189

185

166

162

234

-

5,721

191

11,350

May

205 

173

150

125

110

117

166

225

294

317

354

464

577

577

664

559

519

480 s-a

7*4

1,240

1,490

1,570

1,800

*2, 000

2,290

2,540

3,140

*3.630

3,620

3,460

34,171

1,102

67,780

June

3,100 

2,460

1,990

1,710

1,480

1,380

1,360

1.540 

1,420

1,500

1,420

1,370

1,400

1,680

2,040

2,510

2,940

2,940

2,560

2,480

2,620

2>310

1,950

1,800

1,790

1,770

1,740

1,670

1,520

1,410

-

57,660

1,922

114, 400

July

1.280 

1,160

1,060

882

808

*709

597

526 

473

461

388

341

309

274

262

245

205

213

201

*400

606

467

350

279

258

225

225

197

205

213

189

14,008

452

27,780

Aug.

193 

300

254

948

1.060

677

558

440 

345

*304

258

221

193

167

148

128

87

78

78

75_

81

100

124

258

217

178

167

145

117

156

156

8,211

265

16,290

Sept.

148 

138

124

128

114

107

97

81 

72

62

39

36

39

39

36

36

36

*33

25

25

23

23

25

22

53

25

25

36

36

36

-

1,689

56

3,350

Calendar year 1950: Max 3,640 Min 13 Mean 601 Ac-ft 434,900

Water year 1950-51: Max 3,630 Min 22 Mean 482 Ac-ft 349,200

* Discharge measurement made on this day. 

Note. No gage-height record Jan. 9 to Feb. 

records for other Duchesne River stations.

20j discharge estimated on basis of weather records and
252 GREEN RIVER BASIN

Dinta River below Gilbert Creek, near Neola, Utah

Location.--Lat 40°47'15", long. 110°14'15", in rf| sec. 33, T. 5 N., R. 3 rf., Dinta meridian, on left bank 27 miles northwesterly from Neola.

Records available. August 1950 to September 1951.

uage.--water-stage recorder. Altitude of gage is 9,950 ft (from topographic map).

Extremes. Maximum discharge during period August 1950 to September 1951, 561 cfs May 27 

(gage height, 4.03 ft), from rating curve extended above 230 cfs on basis of slope-area 

determination of peak flow; minimum not determine'!, occurred during period of no gageheight record.

Remarks.--Records good except those for period of no gage-height record, which are poor. 

Wo diversions above station.

Hating table, Aug. 24, 1950, to September 1951 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Aug. 25 to Sept. 18, 1950

1.5

1.7 

1.9 

2.1

2.4 

3.0

4.0

90

228

550

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

9

10

Ac-ft

Aug.

.

_

-

-

_

-

_

-

_

-

Sept.

21

21

20

20

20

21

21

22

 22 23

Day

11

12

13

14

15

16

17

18

19

20

Aug.

.

_

_

_

_

_

_

_

_

Sept.

23

23

20

19

19

19

19

18

17

19

Day

21

22

23

24

25

26

27

28

29

30

31

Aug.

.

_

_

22

*22

22

22

22

23

*23

22

-

Sept.

20

20

20

19

17

16

15

14

14

13

-

1,140

Discharge measurement made on this day.

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

T3

12

12

11

10

11

11

11

10

*10

9.0

310.0

10.0

615

Nov.

8.0

"

240.0

8.0

476

Dee.

7.0

217.0

7.0

430

Jan.

6.0

186.0

6.0

369

Feb.

6.0

-

-

~

168.0

6.0

333

Mar.

6.0

186.0

6.0

369

Apr.

> 6.0

7.0

-

195.0

6.50

387

May

10

30

35

40

50

50

105

245

*515 STO465

430

295

2,960

95.5

5,870

June

210

125

95

75

65

59

F?

102

114

96

86

116

184

257

312

'296" 336

242

*206

*174

142

110

108

112

125

135

144

14O

133

120

4,486

150

8,900

July

112

114

135

104

96

86

83

77

72

70

67

64

59

58

56

62

86

*77

64

67

104

76

64

66

61

58

58

56

58

55

£2

2,290

73.9

4,540

Aug.

69

100

129

195

T27

127

98

88

76

67

62

56

49

46

42

39

38

33

41

58

59

58

62

56

42

39

38

39

55

53

53

2,099

67.7

4,160

Sept.

45

10

39

35

31

*31

29

28

26

26

24

23

23

22

22

21

20

20

20

19

18

17

17

17

16

15

T5

15

15

*15

-

704

23.5

1,400

Calendar year 1950; Max - Mln - Mean - Ae-ft

Water water year year 1950-51: j-jjov-jj.; Max max 515 JJ-a Mln Kin - - Mean Mean 38.5 oo.c Ac-ft Ao-rt 27,850 c./,oju

Peak discharge (base, 250 cfs). May 27 (time unknown) 561 cfs (4.03 ft)j June 15 (8 p.m.) 470 cfs 

(3.77 ft); AugT 4 (2:30 a.m.) 299 cfs (3.21 ft).

* Discharge measurement made on this day.

No_te_. No gage-height record Oct. 13 to June 5; discharge estimated on basis of weather records 

and" records for other Unita River stations.
GREEN RIVER BASIN 

Uinta River above Clover Creek, near Neola, Utah

253

Location -Lat 40°38' , long. 110=10', in NW£ see. 30, T. 3 N., R. 2 W. Uinta meridian, on 

leit Dank d miles upstream.from Clover Creek and IS miles northwest of Neola.

Drainage area.--132 sq mi.

Records available.--October 1945 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,750 ft (from river-profile map).

Average discharge. 6 years, 144 cfs.

Extremes.--Maximum discharge during year, 1,530 cfs May 27 (gage height, 3.95 ft); minimum, 

cis Jan. l, buu may have been less during period of no gage-height record 

1 3 5 " 511, mx± um discharge, 2,300 cfs, June 18, 1949 (gage height, 5.10 ft); minimum 

recorded, that of Jan. 2, 1951.

Remarks.--Records good except those for periods of ice effect or no p-acr^height record 

wnTch are fair. Plow partly regulated by several small mountain lakes and reservoirs 

including Pox Lake, Crescent Lake, Atwood Lake, and Chain Lake (lota] caoac-nv, 9 bout 

3,600 acre-ft). No diversion atove station.

Rating tables, water year 1950-51, except periods of ioa effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 2 to May 27 May 28 to Sept. 30

0.4 21

.7 39

1.0 72

1.5 165

2.0 311

2.5 531

3.0 826

4.0 1,610

1.2 78

1.5 134

2.0 270

2.5 481

3.0 785

4.0 1,540

Discharge, in cubic feet per second, water year October 1350 to September 1951

Day

i

2 

3

4

5

6

7

8

3

10

11

12

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

80 

82

BT

76

76

74

76

76

74

72

72

71

68

68

67

67

*64

63

62

60

60

60

59

TO

60

60

60

63

63

60

2,112

68.1

4,190

Nov.

58

I

59

57

57

56

56

41

36

40

48

52

51

49

*51

54

55

56

55

56

56

52

52

54

54

52

51

49

50

1,572

52.4

3,120

Dec.

49

40

IT

50

TJ

40

50

48

48

46

46

46

47

47

47

46

46

44

46

46

44

41

*45

45

45

40

40

40

44

44

40

1,388

44.8

2,750

Jan.

26

24 

26

> 34

(»)

1,028

33.2

2,040

Feb.

35

(*)

_

_

-

980

35

1,940

Mar.

34

*32

31

31

31

31

1,040

33. -5

2,060

Apr.

31

33 

34

34

33

34

34

33

34

34

31

32

33

34

33

34

35

34

36

39

37

35

36

37

36

38

*37

38

41

3?

-

1,049

35.0

2,080

May

37

36 

 55 35

41

48

55

51

50

48

62

71

64

64

62

58

57

68

80

104

125

131

*161

179

263

542

1,030

*1,150

932

B55

646

7,123

230

14,130

June

466

305 

244

218

204

201

*2ZT

248

284

254

232

267

379

552

697

792

755

622

562 sia

452

352

328

313

332

343

360

356

339

309

-

11,508

384

22 , 830

July

264

250

274

264

248

224

212

204

187

180

172

*164

155

148

T55

201

235

254

221

221

264

232

212

206

204

187

196

201

198

190

193

6,563

212

,13,020

Aug.

221

253 

373

557

418

373

313

284

257

241

226

212

198

*190

182

178

172

THO

180

218

218

224

218

224

201

182

172

172

204

224

198

7,463

241

14,600

Sept.

190

T7I 

164

155

146

139

132

128

124

122

118

118

112

*108

108

103

101

101

97

94

94

90

90

89

85

82

80

80

80

78

-

3,382

113

6,710

Calendar year 1950: Max 1,050 Min 39 Mean 153 Ac-ft 110,800

Water year 1950-51: Max 1,130 Mln - Mean 124 Ac-ft 89,670

Peak discharge (base. 600 cfs). May 27 (9 p.m.) 1,530 ofs (3'.95 ft); June 15 (11 p.m.) 1,070 cfs 

(3.40 ft); Aug. 4 15 a.m.} 691 cfs (2.84 ft).

* Discharge measurement made on this day.

Note. No gage-height record Jan. 4 to Mar. 26, Aug. 16, Sept. 12, 13; discharge estimated on basis 

of 2 discharge measurements, weather records, and records for other Uinta River stations.
254 GREEN RIVER BASIN

Clover Creek near Neola, Utah

Location. Lat 40°37'30", long. 110°07'40", In SE£ sec. 29, T. 3 N., R. 2 W. Uinta meridlan, on right bank approximately three-quarters of a mile upstream from mouth and 14 

miles northwest of Neola.

Records available. August 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,900 ft (from topographic map).

Extremes. 1950-51; Maximum discharge for period, 120 cfs May 27 (gage height, 2.68 ft); 

no now at times.

Remarks. Records, poor.

Discharge, in cubic feet per second, 1950-51 

1950

Day

Aug. 21

-22

23

24

Discharge

0.1

.1

.1

.1

Day

Aug. 25

26

27

28

Discharge

0

0

0

0

Day

Aug. 29

30

31

Discharge

0

0

0

Note. No flow during month of September.

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

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

Calendar year 1950 : Max -

Jan.

0

0

0

Feb.

0

0

0

Mln -

Mar.

0

0

0

Apr.

0

0

0

May

0-5

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.5

1.9

*5.5

15

34

44

52

*69

51

44

32

351.9

11.4

698

June

22

IT

5. 4

6.7

6.0

5.7

5.5

*5.2

7.4

6,. 7

6.4

6.4

7.4

13

12

13

12

9.2

6.7

6.4

8.4

6.4

5.2

4.0

3.3

2.9

2.5

2.2

2.1

1.8

218.9

7.30

434

July

1.6

T^

1.4

1.2

1.1

1.0

.8

.8

.7

.6

.5

.4

.4

.2

.1

.1

.3

.6

.4

.4

.5

.3

.1

.2

.3

.1

.1

»0

7J

0

0

15.7

0.51

31

Aug.

0 5

.4

7.0

BTS

4.5

3.8

3.0

2.5

2.2

1.8

1.4

1.1

.6

.5

.3

.1

0

0

.6

.9

1.3

1.4

1.4

.8

.2

0

.4

1.9

5.2

4.0

53.1

1.71

105

Sept.

2.9

771

1.6

1.4

1.0

.5

.3

.5

0

7J

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

10.3

0.34

20

Mean - Ac-ft -

Water year 1950-51 : Max 69 Mln 0 Mean 1.78 Ac-ft 1,290

Peak discharge (base, 50 efs). May 27 (7:30 p.m.) 120 cfs (2.68 ft). 

* Discharge measurement made on this day.
GREEN RIVER BASIS 

Uinta River near Neola, Utah

255

Location. lat 40°32'10", long. 110°03'40", In SE&Wii sec. 25, T. 2 N., R. 2 W. TJinta meridian, on left bank 300 ft downstream from bridge, three-quarters of a mile upstream 

from Pole Creek, and 7 miles north of Neola.

Drainage area.--181 sq ml.

Kecorqs available.--July 1921 to September 1927 (fragmentary), September 1929 to September 

1951.

Gage. Water-stage recorder. Altitude of gage is 6,910 ft (from river-profile map). Prior 

to Sept. 9, 1927, water-stage recorder, staff gages or chain gages at several sites within 2,000 ft of present site at various datums. Sept. 11, 1929, to Nov. 9, 1938, waterstage recorder at site 200 ft upstream at different datum. Nov. 9, 1938, to Aug. 3, 

1951, water-stage recorder at site 300 ft downstream at different datum.

Average discharge. 23 years (1925-36, 1929-51), 173 cfs.

Extremes. Maximum discharge during year, 1,470 cfs May 27 (gage height, 5.26 ft); minimum, 

4U cfs Mar. 17, 19, Apr. 11, but may have been less during periods of ice effect.

1929-51: Maximum discharge, 3,320 cfs June 26, 1944 (gage height, 5.20 ft, site and 

datum then in use,), from rating curve extended above 1,600 cfs; minimum recorded, 32 cfs 

Mar. 10, 1941.

Remarks. Records good except those for periods of Ice effect or no gage-height record, 

which are fair. Water diverted from Pole Creek and Unlta River and used at Ulnta Power 

& Light Co.'s power plant, enters river about 1,000 ft above station. Uinta power 

canal diverts from river 6 miles above station. Enlargement of canal completed In 

August 1944. Flow through canal increased Oct. 12, 13, 1944, and held nearly constant 

thereafter. Power canal and Pole Creek diversion feed to common forebay. Water not 

used through power plant wastes through spillway of forebay at penstock intake and 

enters river a short distance above station. Prior to Nov. 18, 1948, spill entered 

river half a mile below station. Considerable spill occurs at times when one of two 

power units is not operating. Summer flow slightly regulated by several small mountain 

lakes and reservoirs.

Rating tables, water year 1950-51, except periods of ice e"fect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Jan. 18-19, 23-3O, Feb. 2O-23, Feb. 27

to Mar. 3, Mar. 5 to July 30.

Oct. 1 to Aug. 3 Aug. 4 to Sept. 30

2.0 

2.4 

3.0

46

117

279

4.0 

5.4

694

1,440

1.1 

1.7

252

623

Discharge, In cubic feet per second, water year October 1950 to September 1951

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

Ao-ft

Oct.

105

103

107

TC5

103

103

101

105

105

103

105

101

101

99

97

97

95

*95

93

93

91

91

89

8?

89

89

91

89 

95

95

93

3,017

97.3

5,980

Nov.

89

93

67

a93

a90

aSS

a88

aS5

a? 2

a64

a? 8

a82

a82

a81

a76

*b78

80

80

86

80

82

78

78

76

78

78

78

76 

75

76

-

2,429

81.0

4,820

Dec.

75

66

b64

b72

b70

b62

b72

75

73

71

76

73

73

70

71

71

71

68

b66

b64

b62

b62

*b63

b63

b62

b61

b60

b58 

b57

b56

b53_

2,060

66.5

4,090

Jan.

. b52

50

50

b51

b52

b53

54

55

56

55

54

54 

 54

55

b54

1,631

52.6

3,240

Feb.

. b54

56

56

56

56

b56

b55

b55

*55

56

_

-

1,527

54.5

3,030

Mar.

5S~ 60

54

b54

56

54

54

54

54

55

50

54

54

52

54

52

49

48

4?

52

55

56

54

52

52

56

*55

55 

50

54

52

1,655

.53.4

3,280

Apr.

52

55

58

61

56

56

58

55

54

55

46

4?

54

55

54

52

54

54

54

66

63

55

56

56

54

61

 63

60 

70

68

-

1,704

56.8

3,380

May

58

50

5C

55

56

64

76

76

73

68

91

95

88

91

86

78

68

76

95

132

166

168

206

*244

317

595

1,080

*1.210 

1,050

955

*868

8,385

270

16,630

June

684

458

356

*299

286

273

?5T

303

360

338

303

331

390

613

743

asi

833

738

665

604

585

462

413

386

398

406

417

409 

409

379

13,976

466

27,720

July

331 324"

320

299

289

260

247

238

226

214

214

*209

200

195

189

223

250

299

253

238

273

266

232

214

226

211

206

2J4 

211

209

a220

7,500

242

14,880

Aug.

a270

a350

a540

536" 596

472

404

373

343

302

2£0

252

242

*232

220

207

202 2?2~

212

269

286

302

286

332

274

242

232

227 

269

326

274

9,594

309

19,030

Sept.

258

23T

222

212

194

181

168

157

150

144

141

141

138

*128

128

124

121

117

119

117

115

113

113

110

106

106

104

TOT 

106

106

4,280

143

8,490

Calendar year 1950: Max 1,070 Mln - Mean 186 Ac-ft 134, 6OO

Water year 1950-51: Max 1,210 Mln - Mean 158 Ac-ft 114,600

Peak discharge (base, 700 cfs).--May 27 (12 p.m.) 1,470 cfs (5.26 ft); June 17 (2:30 a.m.) 1.O10 

cfs (4.14 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for other 

stations on Uinta River.

b Stage-discharge relation affected by ice.
256 GREEN RIVER BASIN

Farm Creek near Whiterocks, Utah

Location. Lat 40°34', long. 109°58', in SE^ sec. 14, T. 2 N., R. 1 W. Uinta meridian, on 

rignt bank 0.7 mile upstream from Hominy Creek and 7 miles northwest of Whiterocks.

Records available.--July 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,300 ft (from topographic map).

Extremes. Maximum discharge during year, 204 cfs May 25 (gage height, 3.05 ft), from 

rating curve extended above 43 cfs; minimum, 3.1 cfs Aug. 14-19.

1949-51: Maximum discharge, that of Way 25, 1951; minimum, 1.8 cfs Feb. 12, 1950.

Remarks. Records good.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6 

7

8

9 

10

11

12

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

472

4.2

4.3

4.3

4.2

4.3

4.2

4.3

4.3

4.4

T74

4.4

4.4 *4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.4

4.4

4.4

4.4

4.4

4.4

4.4

133.8

4.32

265

Nov.

4.4

T7I

4.4

4.4

4.4

4.<4

4.6

4.6

4.6

4.6

4.4

4.4

4.4 *4.4

4.4

4.6

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

133.0

4.43

264

Dec.

4.4

TTS

473

4.4

4.3

4.3

4.3

4,3

*4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.3

133.5

4.31

265

Jan.

4.3

T72

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

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.0

3.9

130.1

4.20

258

Feb.

3.8

475

4.2

470

4.0

4.0

4.0

4.0

4.0

4.0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

*4.0

4.0

3.8

_

_

-

109.4

3.91

217

Mar.

3.8

3.8

3.8

4.0 

475

3.8

3.8

3.8 

3.8

3 8

3.8

3.8

3.7

577

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

3.7

*3.8

3.8

3.7

3.7

3.7

3.8

116.6

3.76

231

Apr.

3.7

377

3.8

3.8 

3.3

3 . 3

3.3

3.3 

3.8

3.8

3.7

3.7

3.8

3.8

3.7

3.7

3.7

3.7

3.7

4.0

3.8

3.8

3 8

3.8

3.8

4.0

4.0

4.0

4.0

4.0

-

114.3

3.81

227

May

4.0

3.8

375

*3.8 

3.3

3.3

3.8

3.8 

3.3

4.0

4.0

4.0

4.0

4.0

4.3

5.0

5.6

6.5

8*4

12

18

34

45

50

92

90

*73

53

36

28.

£3

638.2

20.6

1,270

June

21

2U

18

18 

19

18

17

16 

15

15

14

13

12

11

10

9.4

8.8

8.6

8.4

8.6

9.4

8.8

8.1

8.1

*7.6

7.1

7.1

6.9

6.7

6.5

-

357.1

11.9

708

July

6.5

B7Z

6.0

6.0 

5.3

5. 8

5.4

5.2 

5.2

5.0

4.6

4.6

4.6

4.4

4.3

4.2

4.2

4.2

4.2

4.0

4.2

4.2

4.0

4.0

3.8

3.7

3.7

3.6

3.6

*3.6

5.5

142.3

4.59

282

Aug.

3.5

375

3.5

3.5 

3.5

3 5

3.3

3.3 

3.3

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.1

371

3.2

3.3

3.3

3.3

3.3

3.5

3.3

3.3

3.3

3.3

3.5

3.3

3.3

103.0

3.32

204

Sept.

3.2

37T

TTS

3.2 

3.2

3 2

3.2

3.2 

3 2

3.2

3.2

*3.2

3.2

3.2

3.2

3.? 3."

3."

3."

3."

3. 3."

3."

3.

3.Z

3.2

3.2

3.2

3.3

3.3

-

96.4

3.21

191

Calendar year 1950: Max 99 Mln 3.0 Mean 9.90 Ac-ft 7,170

Water year 1950-51: Max 92 Mln 3.1 Mean 6.05 Ac-ft 4,380

Peak discharge (base, 100 cfs).--May 25 (6 p.m.) 204 cfs (3.05 ft). 

* Discharge measurement made on this day.
GREEN RIVER BASIN 257

Whiterocks River above Paradise Creek, near Whiterocks, Utah

Location. Lat 40°38' , long. 109°58 I , in S¥ij sec. 23, T. 3 N., R. 1 W. Uinta meridian, on 

right "bank 2-jj miles upstream from Paradise Creek and 12 miles northwest of Whiterocks.

Records available.--October 1945 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,£ ft (from river-profile map), ^rior

 fo Oct. 1, 1950, at datum 1.0 ft lower.

Average discharge.--6 years, 103 cfs.

Extremes. Maximum discharge during year, 1,600 cfs May 27 (gage height, 3.48 ft), from 

rating curve extended above 700 cfs; minimum, 16 cfs Apr. 11, but may have been less 

during periods of ice effect or no gage-height record.

1945-51: Maximum discharge, 1,780 cfs June 18, 1949 (gage height, 3.42 ft, present 

datum), from rating curve extended above 820 cfs; minimum recorded, that of Apr. 11, 

1951.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. No diversions above station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.2 18

.3 24

.6 45

1.0 92

1.5 189

2.0 346

2.5 626

3.0 1,030

3.5 1,630

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

46

46

46

45

45

44

41

44

43

*42

41

41

41

41

40

39

40

39

39

39

38

39

36

35

36

36

36

35

36

37

36

1,244

40.1

2,470

Nov.

35

35

32

37

36

36

34

34

*b31

b28.

b29

b30

b32

a33

b34

t>36

a35

a34

34

33

33

33

32

32

31

30

30

30

b29

b28

-

976

32.5

1,940

Dec.

b27

» a27

. b27

a27

837

27

1,660

Jan.

a25

775

25

1,540

Feb.

a24

-

-

-

672

24

1,330

Mar.

> a23

, a21

671

21.6

1,330

Apr.

a21

a2T

a21

*a21

21

21

21

21

21

21

25

24

22

23

23

23

25

24

24

27

27

24

25

27

25

27

27

27

31

30

-

720

24.0

1,430

May

28

2J_

28

28

33

46

53

46

42

*41

49

63

55

54

51

47

49

68

84

112

126

144

182

208

404

725

1,100

al, 150

a950

*a830

586

7,409

239

14,700

June

383

252

208

187

189

196

195

205

215

205

198

260

319

418

499

626

554

402' 493

397

397

296

246

221

218

"216

211

203

194

185

-

8,788

293-

17 , 430

July

174

163

152

148

138

128

132

148

140

136

130

126

124

122

121

122

152

152

134

136

154

138

124

122

128

122

112

113

115

119

*131

4,156

134

8,240

Aug.

165

185

393

750

355

274

229

206

194

178

169

150

138

128

121

122

138

138

144

187

189

187

171

185

144

130

121

122

150

167

150

6,080

196

12,060

Sept.

148

144

132

122

115

108

105

98

95

90

89

86

83

81

80

77

*77

78

77

72

71

68

67

66

65

60

59

59

59

59

-

2,590

86.3

5,140

Calendar year 1950: Max 956 Min - Mean 108 Ac-ft 78,230

Water year 195O-51: Max 1,150 Min - Mean 95.7 Ac-ft 69,270

Peak discharge (base. 500 cfs). May 27 (9:30 p.m.) 1,600 cfs (3.48 ft); June 15 (11 p.m.) 75O cfs 

(2.67 ft); Aug. 4 (2 a.m.) 1,290 cfs (3.15 ft).

* Discharge measurement made on this day.

a No gage-height record (stage-discharge relation affected by ice during part of periods); discharge 

estimated on basis of weather records and records for Whiterocks River and Paradise Creek near Whiterocks.

b Stage-discharge relation affected by ice.
258 GREEN RIVER BASIN

Paradise Creek near Whiterocks, Utah

Location. Lat 40°37', long. 109°56', in NE£ sec. 36, T. 3 N., R. 1 W. Uinta meridian, on 

right bank 1,000 ft upstream from mouth and 10 miles north of Whiterocks.

Drainage area.--10 sq mi, approximately.

Records available.--April 1946 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,500 ft (from river-profile map).

Average discharge.--5 years, 7.74 cfs.

Extremes. Maximum discharge during year, 87 cfs May 25 (gage height, 2.32 ft); no flow 

during months of March and April.

1946-51: Maximum discharge, 112 cfs May 16, 1948; maximum gage height, 2.56 ft 

May 8, 1947; no flow Aug. 17-20, 1946, March and April 1951.

Remarks.--Records good except those for period of no gage-height record, which are poor. 

Flow regulated by Paradise Park Reservoir, capacity, 3,100 acre-ft.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

0.8 

.9

1.0

1.1

1.2

0 4

6

1.3

1.5 

1.7 

1.9 

2.1

5.5

12

23

39

59

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4

5

6

7

8

9

10

11

12

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

T73

fc*

1.2

1.3

1.3

1.3

1.3

*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

1.2

1.2

1.2

1.2

1.2

1.1

1.1

37.6

1.21

75

.Nov.

1.1

1.1

1.1 

1.2

1.2

1.2

1.1

C)

> 0.7

-

24.1

0.80

48

Dec.

0.6

18.6

0.60

37

Jan.

0.4

12.4

0.40

25

Feb.

0.2

_

_

-

5.6

0.20

11

Mar.

0

0

0

Apr.

(*)

0

0

0

May

0.2

.6

.6

.5

*.5

.7

1.0

1.2

1.1

1.0

2.1

27

25

29

34

37

43

48

47

48

57

56

51

40

*31

23

606.5

19.6

1,200

June

19

16

14 

14

14

13

11

11

11

11

10

10

9.6

8.9

8.2

7.9

7.6

6.9

6.3

6.6

7.9

6.6

5.8

5.2

4.8

*4.3

3.9

3.7

3.3

3.1

-

264.6

8.82

525

July

2.9

2.8

2.6 

2.5

2.3

2.2

2.2

8.7

19

19

19

19

18

20

22

22

23

23

25

25

25

25

25

25

25

25

25

24

24

24

*24

551.2

17.8

1,090

Aug.

24

20

14 

6.0

2.2

1.5

1.1

1.0

1.0

1.0

.9

.8

.8

.8

.8

.7

.7

.7

.7

1.9

10

11

11

7.9

1.3

1.0

.9

.8

1.3

1.7

1.2

128.7

4.15

255

Sept.

1.0

.9

.9 

.9

.8

.8

.8

.8

.8

.8

.8

~.7

.7

.7

.7

*1.0

5.5

5.8

5.8

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6^3

6.0

6.3

-

91.5

3. Of

181

Calendar year 1950: Max 73 Mln - Mean 10.3 Ac-ft 7,420

Water year 1950-51: Max 57 Min 0 Mean 4.77 Ac-ft 3,450

* Discharge measurement made on this day.

Note. No gage-height record Nov. 8 to May 6; discharge estimated on basis of weather records, records for stations on Whiterocks River, and 1 observation of no flow.
GREEN RIVER BASIN 259

Whiterocks River near Whiterocks, Utah

Location. Lat 40°34 1 , long. 109°56', In SW£ sec. 18, T. 2 N., IE. Ulnta meridian, on 

lel't Dank three-quarters of a mile upstream from heading of United States Whiterocks 

Canal and 6j miles north of Whiterocks.

Drainage area.--115 sq mi.

Records available. September 1899 to August 1904, April 1907 to November 1910, August 

19^1 to September 1928, February 1930 to September 1951. November 1917 to June 1921 at 

site downstream from diversion of United States Whiterocks Canal and above that of Farm 

Creek Canal (records equivalent if flow of Whiterocks Canal is included).

Gage.--Water-stage recorder. Altitude of gage is 6,980 ft (from river-profile map). Prior 

fo Oct. 16, 1930, staff and chain gages at several sites within 1 mile, of present site 

at various datums. Oct. 16, 1930, to Nov. 7, 1949, water-stage recorder at site 100 ft 

downstream at different datum.

Average discharge.--27 years (1899-1903, 1908-10, 1930-51), 116 cfs.

Extremes.--Maximum discharge during year, 1,660 cfs lyjay 27 (gage height, 4.07 ft); minimum, 

i!0 el's Mar. 23, 24, but may have been less during periods of ice effect or no gage-height 

record.

1921-28, 1930-51: Maximum discharge, 2,750 cfs June 21, 1922, from rating curve extended above 1,700 cfs; minimum recorded, 10 cfs Dec. 5, 1933.

Remarks.--Records good except those for periods of ice effect, which are fair, 

slightly regulated by small mountain lakes. One diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Flow

Oct. 1 to June 24 June 25 to Sept. 30

87

141

2.0 271

2.5 466

3.6 1,140

1.5 

2.0 

2.5 

3.0

54

107

251

454

730

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

53

53

56

55

55

52

49

52

52

50

49

50

50

48

47

47

48

*47

45

45

46

45

44

44

44

46

46

46 

48

48

46

1,506

48.6

2,990

Nov.

44

46

39

45

40

42

40

41

34

31,

31

33

34

35

36

42

*42

41

45

42

42

40

40

38

38

38

38

37 

35

37

-

1,166

38.9

2,310

Dec.

35

(*)

32

995

32.1

1,970

Jan.

(*)

30

930

30

1,840

Feb.

 29

*28

28

29

-

-

810

28.9

1,610

Mar.

27

> 25

(*)

795

25.6

1,580

Apr.

, 25

.

29

28

26

25

25

26

27

26

27

28

28

27

27

28

27

28

28

30 

33

32

-

805

26.8

1,600

May

31

30

33

*32

35

47

56

52

48

46

52

65

60

59

58

55

72

92

112

150

165

]87

233

250

408

706

*1,050

1,120 

941

856

688

7,786

251

15,440

June

476

308

256

230

233

230

224

232

247

230

224

259

301

392

480

608

5W

504

421

392

413

308

265

241

*241

231

225

212 

202

190

-

9,373

312

18,590

July

175

T64

158

150

142

138

142

152

145

139

134

132

130

129

130

140

155

155

140

145

160

140

130

128

132

128

125- 123

132

*139

142

4,374

141

8,680

Aug.

187

187

351

710

355

279

231

E02

187

170

161

142

129

119

109

105

124

129

129

184

193

190

175

187

139

119

107

109 

134

167

142

5,852

189

11,610

Sept.

134

13T

121

109

103

95

89

85

82

80

78

*78

77

75

73

70

68

75

73

70

68

68

67

65

64

61

62

61 

62

62

-

2,406

80.2

4,770

Calendar year 1950: Max 1,060 Mln 31 Mean 125 Ac-ft 90,770

Water year 1950-51: Max 1,120 Mln - Mean 101 Ac-ft 72,990

Peak discharge (base, 600 efsl.--May 27 (10 p.m.) 1,660 cfs (4.07 ft); June 16 (l a.m.) 712 cfs 

(3.00 ft;; AugT 4 (4 a.m.) 1,160 cfs (3.62 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10-16, Dec. 2 to Jan. 31, Mar. 1-31. No gageheight record Feb. 1-25, Apr. 1 to May 4 (stage-discharge record affected by ice during most of winter period); discharge estimated on basis of weather records and records for Whiterocks River above 

Faradise Creek and Paradise Creek near Whiterocks.
260 GREEN RIVER BASIN

Deep Creek near Lapoint, Utah

Location.--Lat 40°20 r , long. 109°51', in SEv sec. 2, T. 2 S., R. 1 E. Uinta meridian, on 

rignt bank three-quarters of a mile upstream from mouth and 5 miles southwest of 

Lapoint.

Drainage area.--75 sq mi, approximately.

Records available.--July 1942 to September 1945, July 1949 to September 1951.

C-age.--Water-stage recorder. Altitude of gage is 5,150 ft (from topographic map). July

 n, 1942, to Sept. 30, 1945, staff gages at site about 3 miles upstream at different 

datums.

Average discharge.--5 years, 8.01 cfs.

Extremes.--Maximum discharge during year, 22 cfs May 23 (gage height, 3.08 ft); minimum 

noT~cfeterniined, uccurred during period of no gage-height record.

1942-45, 1949-51: Maximum discharge, 200 cfs Aug. 29, 1943 (gage height, 8.2 ft, 

from floodmarks, site and datum then in use), from rating curve extended above 14 cfs 

on basis of discharge graph determined from record for Uinta River at Port Duchesne; 

no flow Apr. 17, 1950.

Remarks.--Records fair except those for periods of doubtful or no gage-height record,

 wnicn are poor. Many diversions above station for irrigation.

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

2.7

2.7

2.7

2.6

2.6

*2.6

3.0

3.1

2.9

3.1

3.6

375

3.2

2.8

2.7

> 2.2

78.7

2.54

156

Nov.

(*)

2.2

-

66.0

2.2

131

Dec.

2.5

(*)

77.5

2.5

154

Jan.

1"

12

336.0

10.8

666

Feb.

1-

*13

T2

12

12

11

11

8.5

2.0

> 2.0

*1.9

_

_

-

171.4

6.12

340

Mar.

2.0

2.0

2.6

4.0

5.9

6.2

6.6

7.4

9.6

11

9.1

8.5

7.8

6.7

9.6

9.8

8.0

6.8

6.8

7.6

*8.5

9.1

7.0

6.8

4.9

2.3

2.2

1.8

1.8

1.8

1.7

187.9

6.06

373

Apr.

1.7

1.5

1.8 ITS

1.5

1.5

1.5

1.4

*1.4

1.8

1.5

1.5

1.4

1.5

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.4

1.4

1.3

T73

1.4

1.3

1.3

1.3

1.3

-

43.9

1.46

87

May

1.3

1.3

1.3

1.3

1.2

1.2

1.2

*1.3

1.3

1.2

1.2

1.3

1.3

1.4

1.5

1.3

1.3

1.4

1.4

1.5

1.9

6.0

12"2.4

2.1

2.1

1.5

1.5

2.0

2.0

2.0

61.7

1.99

122

June

2.3

2.1

2.0

2.1

2.2

2.3

2.3

2.1

2.2

2.6

2.6

2.6

2.4

2.6

2.5

2.6

2.7

*5.1

16

15

17

18

T3

9.6

6.6

1 2 ' 8

1 " 4

J -

149.1

4.97

296

July

. 1.4

1.5

.6

.7

.8

.8

.8

1.9

2.0

*2.0

2.3

2.4

274

49.8

1.61

99

Aug.

2.5

2.8

2.7

3.2

277

2.6

2.6

2.6

2.6

*2.6

2.6

2.5

2.3

275

2.3

2.3

2.3

2.3

2.3

2.4

2.6

2.9

2.8

2.8

2.6

2.5

2.6

2.6

2.7

2.6

*2.6

79.8

2.57

158

Sept.

2.9

275

2.5

2.4

2.4

2.3

2.4

2.5

2.4

2.4

2.5

2.6

2.4

2.3

2.3

2.3

2.3

2.2

2.2

2.1

2.1

2.1

2.1

2.1

2.0

2.0

2.0

2.0

2.0

1.9

-

68.2

2.27

135

Calendar year 1950: Max 26 Mln - Mean 6.08 Ac-ft 4,410

Water year 1950-51: Max 18 Mln - Mean 3.75 Ac-ft 2,720

* Discharge measurement made on this day.

Note. Doubtful or no gage-height record Oct. 16 to Feb. 5, Feb. 14 to Mar.-19, June 27 to July 19; 

discharge estimated on basis of recorded graph, 3 discharge measurements, weather records, or records 

for nearby streams.
GREEN RIVER BASIN 

Dry Gulch nearNeola, Utah

261

Location. Lat 40°28 I , long. 110°10', in SW£ sec. 19, T. 1 N., R. 2 W., on right bank 

 i 1/3 miles above Hlghline Canal crossing, 7 miles west northwest from Neola, and 

8 miles northeast from Altonah.

Records available.--October 1950 tD September 1951. 

Gage.--Water-stage recorder. Altitude of gage is 6,£ ft (from topographic map).

Extremes. --Maximum discharge during year, 66 cfs my 30 (gage height, 2.23 ft); no flow 

during most of year.

Remarks.--Records good. No diversions or regulation above station.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

0.8 

.9

1.1 1.2

1.2 2.5

1.3 4.6

1.4 7.2

1.6 16

1.9 37

2.3 73

Discharge, In oublo feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

0

0

Apr.

0s

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

.1

.1

.1

_._2

.2

.2

.1

.2

.1

*.2

.2

.2

.2

.2

-

2.5

0.08

5.0

May

0.2

.2

.1

71

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.1

.1

.2

.4

.6

.7

*1.0

1.8

4.8

13

30

*48

50

*35

191.7

6.18

380

June

25

*TS

11

8.2

7.9

6.6

5.8

5.3

6.1

6.4

5.3

5.0

5.3

8.2

6.9

7.9

11

9.7

5.8

2.7

5.3

4.1

1.8

.8

.5

.3

.3

.2

72

.2 -

179.8

5.99

357

July

-72 0.2

.1

.1

.1

.1

0

3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

**.2

.1

.2

.1

0

0

0

0

0

0

0

0

0

3.4

0.11

6.7

Aug.

0

S

0

.1

71

.1

.1

**!i

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 1950 : Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 50 Mln 0 Mean- 1.04 Ac-ft 751

Peak discharge (base. 30 cfs).--May 30 (6:30 a.m.) 66 cfs (2.23 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

256684 O - 53 - 18
262 GREEN RIVER BASIN

Uinta River at Port Duohesne, Utah

Location Lat 40°18' , long. 109°51' , in NW£ sec. 23, T. 2 S., R. 1 E. Uinta meridian on 

leri; oank a quarter of a mile downstream from bridge on U. S. Highway 40, half a mile 

north of Port Duohesne, and 7 miles east of Roosevelt.

Drainage area. 672 sq mi.

Records available.--September 1899 to December 1904, April to June 1906, April 1907 to 

iNovemoer isiu (fragmentary); May 1917 to September 1920, fragmentary (published as 

near Port Duchesne ), October 1942 to September 1951.

ent datums. Oct. 23, 1917, to Sept. 30, 1920, water-stage recorder at site 2i miles 

downstream at different datum.

Average discharge. 14 years (1899-1902, 1908-10, 1942-51), 143 cfs.

Extremes --Maximum discharge during year, 1,430 cfs May 28 (gage height, 3.66 ft); minimum, 0.2 cfs May 19.

1899-1904, 1906-10, 1917-20, 1942-51: Maximum discharge, more than 7,500 cfs in 

June 1917; no flow at times.

Remarks. Records good except those for periods of no gage-height record, which are fair 

Many diversions above station for irrigation.

Revisions (water years).--W 918: 1900, 1903, 1909, 1917-18.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used June 15-21)

0.4 0

.5 .5

.6 1.0

.7 2.5

.8 5.0

0.9

1.0

1.2

1.5 60

1.8 113

8.5

13

2.0 165

2.5 370

3.0 695

3.5 1,220

Discharge, In cubic feet per second, water year October 1950 to September 1951

Bay

1

2

3

4

5

6

7

8

9

10

11

12

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

3.5

3.0

3.0

3.0

*2.8 BTo

4.0

3.0

3.2

4.0

3.8

3.2

4.0

5.0

3.2

3.0

3.5

3.5

3.5

3.5

3.5

3.8

4.0

4.5

4.2

3.8

4.0 

4.0

4.0

4.5

112.0

3.61

222

Nov.

4.8

4.5

4.2

4.5

6.4

5.4

5.4

5.4

4.5

3.5

13

31

36

*63 47J

35

39

38

47

41

59

60

52

51

51

51

50

46 

46

47

944.6

31.5

1,870

Dec.

48

46

57

57

59

54

70

89

S?

70

66

68

66

51

48

51

46

39

47

41

*41

38

38

48

56

44

19

19 

63

69

68

1,658

53.5

3,290

Jan.

56

52

62

69

91

80

2,410

77.7

4,780

Feb.

(*1 V 90

35

(*)

_

-

1,640

58.6

3,250

Mar.

21

20

18

29

32

31

30

29

33-zs

23

21

21

20

21

20

14

11

12

13

14

14

12

11

10

6.4

6.4

5.4 

*5.0

BTE

5.7

542.3

17.5

1,080

Apr.

5.0

4.5

5.0

5.4

5.4

5.4

5.7

4.8

4.2

4.2

2.8 372"

3.5

3.5

3.0

3.0

2.8

3.5

4.0

4.8

6.4

^TJ

5.0

4.8

4.2

4.8

5.0

5.0 

4.8

5.4

-

135.1

4.50

268

May

5.4

4.5

3.0

.8

.8

.8

.6

**.6

.6

.7

.6

.6

.4

.4

.4

.4

.4

.3

.2

TE

3.5

8.5

17

2.4

1.8

144

650

*L,170 

557

720

500

4,226.3

136

8,380

June

195

*40

12

8.5

6.4

6.4

5.4

7.4

4.0

9.4

13

16

13

40

90

261

342

*2BTT

163

113

188

143

70

34

21

13

5.7

4.0 

4.0

3.5

-

2,119.7

70.7

4,200

July

2.8

2.8

3.2

6.4 5TO~

5.7

3.2

2.2

2.8

2.5

1.9

1.3

1.4

1.2

1.2

1.2

1.3

1.0 TTtr

1.6

1.4

1.3

1.2

1.0

1.2

1.0

1.0

1.0 

1.0

1.0

1.0

61.8

1.99

123

Aug.

1.0

*T70-

9.8

~5D161

16

12

7.1

6.8

7.4

8.2

6.0

*5.0

5.0

5.2

5.4

5.8

6.4

7.8

16

28

18

14

19

13

7.4

7.1

5.7 

5.4

18

13

521.5

16.8

1,030

Sept.

9.4

11

9.4

8.2

6.0

8.5

7.1

4.5

4.8

6.0

6.4

7.4

7.1

6.4

7.8

8.5

8.5

*7.8

9.8

9.4

4.8

4.0

4.2

2.8

2.5

2.5

6.0

6.0 

3.8

3.5

-

194.1

6.47

385

Calendar year 1950: Max 1,460 Mln 1.9 Mean 88.6 Ac-ft 64,140

Water year 1950-51: Max 1,170 Mln O.2 Mean 39.9 Ac-ft 28,880

* Discharge measurement made on this day.

** Field estimate made on this day.

Note. No gage-height record Jan. 6 to Feb. 28, Aug. 12-17; discharge estimated on basis of 3 

charge measurements, weather records, and records for other stations on Uinta River and nearby 

streams.
GREEN RIVER BASIN 

Duchesne River near Randlett, Utah

263

Location. Lat 40 0 13 I , long. 109°47', in SEij-SEi sec. 17, T. 3 S., R. 2 E. Uinta meridian, 

on left bank a quarter of a mile downstream from Uinta River, l£ miles southeast of 

Randlett, and 6| miles southeast of Fort Duchesne.

Drainage area. 3,920 sq mi, approximately. 

Records available. October 1942 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,750 ft (from river-profile map). Prior

 to Aug. 23, 1944, at site 500 ft downstream at different datum.

Average discharge. 9 years, 675 cfs.

Extremes. Maximum discharge during year, 4,880 cfs May 29 (gage height, 5.48 ft); minimum,

 «y cfs Sept. 28.

1942-51: Maximum discharge, 8,500 cfs June 19, 1949 (gage height, 7.55 ft); minimum, 

12 cfs Sept. 14, 1948.

Remarks-. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Flow regulated by several reservoirs. Diversions above station for 

irrigation. Records of chemical analyses and water temperatures for the water year 1951 

are given in Water-Supply Paper 1200.

Hating table, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.5 100

1.7 136

2.0 216

2.5 

3.0 

3.5

448

810

1,340

4.0 

5.0 

5.5

2,040

3,890

4,920

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

303 

308

312

3758"

299

*277

260

265

265

269

265

256

252

241

227

227

230

227

216

216

230

223

220

220

216

213

220

241

269

269

277

7,821

252

15,510

Nov.

299 

299

286

312

312

312

294

290

286

260

290

376

485

550

536

*491

498

563

634

679

612

605

598

556

536

536

517

510

504

498

-

13,524

451

26,820

Dec.

510 

467

425

543

648

523

536

703

648

648

634

619

612

*590

563

590

563

523

523

536

523

479

437

437

479

460

425

391

TO

454

536

16,439

530

32,610

Jan.

460 

360

350

454

523

536

420

13,183

425

26,150

Feb.

, 470

_

-

13,160

470

26,100

Mar.

448 

454

467

402

479

498 ¥B5~

479

*485

479

408

366

360

402

381

376

335

290

303

366

366

340

331

294

281

294

299

281

260

245

SIS

11,502

371

22,810

Apr.

260 

252

227

213

223

223

220

223

227

*174

187

181

171

T76" 156

230

252

281

277

286

290

299 '550"

299

286

277

260

248

238

290

-

7,216

241

14,310

May

331 

286

248

227

210

216

*248

286

331

381

408

504

656

687

785

703

641

563

619

776

1,260

1,570

1,540

1,700

1,890

2,270

*3,090

4,350

*4,600

4,460

4,080

39,916

1,288

79,170

June

3,500 

2,760

2,140

*1,820

1,570

1,440

1,430

1,580

1,430

1,560

1,520

1,420

1,470

1,700

2,070

2,680

3,240

5,360

2,900

2,720

2,940

3,000

2,500

2,100

1,900

1,800

1,700

1,600

*1,510

1,390

62,550

2,085

124,100

July

1,260 

1,190

460

15,796

509

31,320

Aug.

250 

500

*391

954

1,420

1,020

846

734

563

510

414

376

545

286

234

216

184

151

TB"6" 147

168

223

260

491

517

397

360

*308

290

350

386

13,247

427

26,260

Sept.

322 

3758"

277

252

245

213

190

168

145

158

156

156

156

154

134

130

136

130

130

*130

130

130

130

130

130

122

TT3" 113

138

132

4,858

162

9,640

Calendar year 1950: Max 5,170 Min 71 Mean 794 Ac-ft 574,500

Water year 1950-51: Max 4,600 Min 113 Mean 601 Ac-ft 434,800

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Jan. 7 to Feb. 28. No gage-height record June 23- 

28, July 3 to Aug. 2; discharge estimated on basis of records for other Duchesne River stations.
264 GREEN RIVER BASIN

Green River near Ouray, Utah

Location. Lat 40°04', long. 109°44', in NE^ sec. 11, T. 5 S., R. 2 E., Uinta meridian, 

 on right bank 2f miles upstream from Willow Creek and 3 miles southwest of Ouray.

Records available.--October 1947 to September 1951. 

Gage.--Water-stage recorder. Altitude of gage is 4,£ ft (from river-profile map).

Extremes. Maximum discharge during year, 30,600 cfs May 31 (gage height, 12.27 ft); mini- 

 mum daily, 1,100 cfs Jan. 5-7.

1947-51: Maximum discharge, 33,700 cfs June 21, 1949 (gage height, 12.62 ft); minimum daily, 700 cfs Dec. 15, 1949, occurred during period of ice effect.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Discharge measurements made once or twice a week. Diversions above 

station for irrigation.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.470

2,450

2,440

2,450

2,440

2,380

2,370

2,420

2,460

2,460

2,440

2,410

2,400 

2,380

2,340

2,330

2,320

2,320

2,310

2,310

2,310

2,290

2,290

2,280

2,280

2,250

2,220

2.200

2,240

2,270

2,290

72,820

2,349

144,400

Nov.

2,330

2,360

2,370

2,470

2,610

2,670

2,600

2,530

2,530

2,490

2,420

2,360

2.180 

2,310

2,530

2,420

2,190

2,190

2,650

2,920

3,040

3,170

3,490

5.750

3,650

3,530

3,420

3,390

3,320

3,140

-

83,010

2,767

164,600

Dec.

2,990

2,960

2,960

2,980

2,900

2,800

2,650

2,500

2,400

2,220

2,240

2,540

2,610 

2,960

3,320

5.420

3,300

3,060

2,840

2,740

2,600

2,490

2,540

2,570

2,320

2,100

1,950

1,900

1,850

1,800

1,650

80,160

2,586

159,000

Jan.

1,600

1,400

1,300

1,150

1.100

1,100

1,100

1,120

1,160

1,200

1,250

1,550

1,450 

1,600

1,750

1,900

2,000

2,100

2,200

2,250

2,500

2,250

2,250

2,220

2,220

2,220

2,260

2,500

2,200

2,150

2,100

54,550

1,760

108,200

Feb.

1,950

1,850

1,800

1.700

1,850

2,000

2,200

2,450

2,600

2,800

2,900

5,000

5,150 

5,500

5,500

5,600

5.750

5,700

5,600

5,500

5,500

5,500

5,400

3,350

3,400

5,500

5,450

5,400

_

-

82,700

2,954

164,000

Mar.

5,500

5,200

5,100

5,100

5,100

5,060

5,040

5,170

5,490

3,470

3,600

3,420

3,070 

3,010

5,140

5,250

3,280

3,120

2,800

2,600

2.580

2,720

3,370

3,420

5,460

4,560

4,960

5.110

4,740

4,700

5,000

107,740

5,475

215,700

Apr.

5,150

4,780

4,490

4,540

4,540

4,510

4,780

5,550

6,180

6,560

6,520

6,590

6,000 

5,770

5,460

5,090

4,760

5,070

6,520

6,870

7,010

7,650

8,870

9,930

9,510

8,950

8,870

9.960

9,690

9,460

-

198,590

6,620

395,900

May

9,000

9,090

9,200

9,540

9,050

7,980

7,270

7.220

8,500

10,400

11,600

11,900

11,800 

12,200

15,800

14,000

14,100

14,100

15,600

15,800

15,600

16,700

18,800

20,200

20,700

21,900

23,500

25,600

28,100

29,700

50.200

473,150

15,260

958,400

June

50,000

28,700

28,300

28,200

27,100

24,500

22,000

19,900

18,600

17,200

16,300

15,800

15,400 

14.800

14,900

15,500

17,000

18,900

21,600

24,100

26,400

27,900

27,400

26,100

24,900

25,800

22,200

20,400

19,000

18,100

-

654,800

21,830

1,299,000

July

16.800

15,800

15,200

14,500

14,000

13,400

12,600

12,100

11,400

11,300

11,000

10,300

9,750 

9,230

8,790

8,730

8,500

7,680

6,940

6,640

6,850

7,880

7,780

7,900

8,220

9,110

8,730

8,220

7,460

6,920

6.590

510,520

10,010

615,500

Aug.

7,010

7,680

7,510

7,750

8.580

8,580

8,450

8,400

8,520

8,020

7,570

6,920

6,480 

6,090

5,550

5,090

4,650

4,540

4,120

5,990

4,160

4,220

4,240

4,400

4,100

5,840

3,840

3.820

3,860

5,460

3,930

180,530

5,824

358,100

Sept.

4.180

3,840

3,580

5,490

5,670

5,860

5,640

5,540

5,110

2,960

2,840

2,700

2,600 

2,560

2,470

2,410

2,560

2,550

2,310

2,270

2,200

2,140

2,070

2,010

2,000

1,960

1,890

1.860

1,910

1,960

-

80,520

2,684

159,700

Calendar year 1950: Max 31,600 Mln 1,500 Mean 7,523 Ac-ft 5,447,OOO

Water year 1950-51: Max 30,200 Mln 1,100 Mean 6,517 Ac-ft 4,718,000

Peak discharge (base, 16.000 efsi. May 31 (8 p.m.) 30,600 cfs (12.27 ft); June 22 (11 p.m.) 

28,200 cfs (12.00 ft).

Note. Stage-discharge relation affected by Ice Dec. 26 to Jan. 29, Feb. 7-28. No gage-height record Dec. 6-8, Jan. 30 to Feb. 6, Mar. 1-5; discharge estimated on basis of 2 discharge measurements, 

weather records, and records for other stations on Green River.
GREEN RIVER BASIN 

White River near Meeker, Colo.

265

Location. Lat 40°03', long. 107°52' , sec. 30, T. 1 N., R. 93 W., on left bank 1 mile upstream from Curtls Creek and 2-| miles (revised) east of Meeker.

Drainage area.--762 sq mi.

Records available. May 1901 to October 1906, May 1910 to November 1913, and October 1933 

to aeptemoer 1951 in reports of Geological Survey. May 1901 to October 1906 and May 

1910 to September 1951 in reports of State engineer.

Gage.--Water-stage recorder at present site since Oct. 20, 1913. Altitude of gage is 

F.320 ft (from topographic map). Prior to Oct. 20, 1913, staff gage or water-stage 

recorder at site 2? miles downstream at different datum. Oct. 20, -1913, to June 27, 

1934, at datum 1.00 ft higher.

Average discharge. 46 years (1901-6, 1910-51), 636 cfs.

Extremes.--Maximum discharge during year, 3,160 cfs May 29 (gage height, 3.70 ft); minimum 

daily, 220 cfs Feb. 1.

1901-6, 1910-51: Maximum daily discharge, 6,070 cfs June 16, 1921; minimum daily, 

112 cfs July 17, 1934.

Remarks.--Records excellent except those for periods of ice effect or no gage-height recora, which are fair. Diversions for irrigation above station.

Revisions. W 764: Drainage area.

Rating table, water year 1950-51, except period of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

0.9 

1.0 

1.5

220

246

455

2.0 

3.0 

3.7

800

1,850

3,160

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

370 

402

475?

393

384

379

379

379

*379

374

370

374

365

365

365

370

365

352

348

348

348

348

348

348

352

352

352

348

352

343

313

11,297

364

22,410

Nov.

348 

356

343

352

343

352

352

352

343

267

322

339

339

348

356

314

356

352

374

374

*384

388

3J3

318

318

327

322

314

314

327

10,237

341

20,300

Dec.

339 

331

291

361

348

*284

335

365

36T

339

348

348

352

348

352

348

314

310

339

343

314

310

295

314

314

303

295

280

357

335

331

10,174

328

20,180

Jan.

318 

314

306

314

527

306

287

a270

a290

306

314

310

273

b300

314

*314

303

299

299

273

258

318

291

306

306

287

295

299

299

284

a250

9,230

298

18,310

Feb.

a220 a'S'SO"

a290

32Z

3IS

303

295

291

287

295

291

299

291

246

258

273

284

280

295

276

273

280

287

295

287

267

295

287

_

_

-

7,935

283

15,740

Mar,

276 

a300

a285

a270 a'ESB"

a300

318

322

327

531

306

280

318

310

314

310

284

284

295

314

*318

322

303

299

314

322

331

314

284

318

310

9,474

306

18,790

Apr.

310 

299 325"

335

335

335

331

331

327

327

306

*318

314

339

352

361

379

393

413

450

499

494

472

477

523

510

499

499

568

582

-

12,000

400

23,800

May

556 

530

499

523

603

776

864

1,010

925

934

1,070

1,220

1,260

*1,090

1,020

1,190

1,390

1,320

1,480

1,640

1,840

1,880

1,950

2,010

2,020

2,020

2,430

2,770

2,990

2,790

2,640

45,240

1,459

89,730

June

2,740 

2,270

1,820

1,520

1,340

1,360

1,470

1,660

1,560

1,600

1,480

1,340

*1,520

1,420

1,680

1,930

2,150

2,340

2,360

2,700

2,850

2,510

2,370

2,220

2,150

2,240

2,200

2,040

1,930

1,800

-

58,670

1,956

116,400

July

1,650 

1,520

1,380

1,300

1,230

1,100

1,010

943

*864

824

744

690

645

617

562

549

549

582

542

624

705

698

603

562

530

516

523

610

536

499

482

24,189

780

'47,980

Aug.

477 

488

523

499

499

494

*499

488

477

466

460

444

428

407

402

397

379

365

365

374

423

393

379

370

374

361

348

379

407

568

ISTT

13,421

433

26,620

Sept.

418 

357

388

393

379

370

365

361

356

352

348

*352

361

356

348

348

343

331

295

287

284

287

287

284

284

276

TTS

280

303

327

-

10,036

335

19,910

Calendar year 1950: Max 3,310 Mln 267 Mean 585 Ac-ft 423,800

Water year 1950-51: Max 2,990 Mln 220 Mean 608 Ac-ft 440,200

Peak discharge (base, 2,100 cfa). May 29 (3 a.m.) 3,160 cfs (3.70 ft); June 22 (8 a.m.) 3,060 cfs (3.66 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for Roaring 

Fork at Qlenwood Springs.

b Stage-discharge relation affected by Ice.
266 GREEN RIVER BASIN

White River near Watson, Utah

Location. Lat 39°58', long. 109°10', in sec. 2, T. 10 S., R. 24 E. Salt Lake meridian, on 

ngnt bank just downstream from Evacuation Creek, 250 ft downstream from highway bridge, 

and 7 miles north of Watson.

Drainage area. 4,020 sq mi, approximately.

Records available. April to October 1906 (published as "near Dragon") and October 1933 to 

sepiemoer istu in reports of Geological Survey. April 1923 to September 1951 in reports of State engineer of Colorado. Records of monthly discharge prior to October 

1938 have been republished, with some revisions and additions, in Water-Supply Paper 918.

Gage.--Water-stage recorder. Datum of gage is 4,949.78 ft above mean sea level, datum of 

 T929. April to October 1906, chain gage on bridge at different datum. April 1923 to 

Oct. 3, 1938, water-stage recorder at bridge at datum 1.48 ft higher. Oct. 4, 1938, to 

Mar. 22, 1939, water-stage recorder 1,100 ft upstream from bridge at different datum. 

Mar. 23 to Apr. 17, 1939, temporary gage on bridge at present datum.

Average discharge.--28 years (1923-51), 733 cfs.

Extremes.--Maximum discharge during year, 5,820 cfs Aug. 29 (gage height, 5.45 ft); minimum daily, 160 cfs Feb. 1.

1906, 1923-51: Maximum daily discharge, 8,160 cfs July 15, 1929; minimum discharge, 

52 cfs July 19, 20, 1934.

Remarks. Records good except those for periods of ice effect, which are fair. Diversions 

ror irrigation above station. Records of chemical analyses and water temperatures for 

the water year 1951 are given in Water-Supply Paper 1200.

Revisions. W 764: Drainage area.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to July 21 July 22 to Sept. 30

0.5 265

1.0 550

2.0 1,420

3.0 

3.2

2,550

2,790

0.6 270

1.0 465

1.5 830

2.0 1,350

3.0 2,500

3.5 3,150

3.7 3,410

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

408 

420

446

459

446

433

420

414

*414

414

408

402

402

402

396

396

396

396

390

384

384

384

384

384

378

372 378"

390

390

390 

390

12,470

402

24,730

Nov.

384 

390

402

414

390

402

396 

402

390

360

355

296 3T6"

420

408

396

402

378

426

*426

446

426

459

m

396

378

378

384

372

372

11,828

394

23,460

Dec.

384 

396

360

335

515

*325

345 

330

384

440

420

402

402

402

402

402

414

396

350

355

384

372

330

340

340

350

366

345

325

320 

330

11,361

366

22,530

Jan.

285 

275

290

310

320

280

255 

245

2"57J

260

280

275

260

280

300

300

*300

305

300

290

300

330

320

320

330

320

330" 340

325

310 

260

9,145

295

18,140

Feb.

160 '52C

270

300

330

370

460 

480

440

425

440

450

480

470

440

410

415

430

450

470

*480

500

511

518

571

518

452

396

~

11,856

423

23,520

Mar.

466 

420

402

420

426

452

550 

748 7JB"

635

498

446

440

402

446

452

402

372

340 *3"?0~

366

378

420

378

360

355

372

396

390

360 

350

13,530

436

26,840

Apr.

355 

350

350

355

372

360

390 

384

384

384

*360

360

335 3"?0~

340

360

372

390

433

452

492

571

571

511

550

650

SW

592

578

635

13,175

439

26,130

May

702 

642

585

537

504

544

658 

810

922

940

922

985

1,100

*1,190

1,100

1,000

1,060

1,220

1,280

1,370

1,500

1,730

1,820

1,800

1,830

1,850

1,850

2,060

2,320

2,530 

5,490

39,851

1,286

79,040

June

2,380 

2,470

2,240

1,830

1,550

1,310

1,250 

1,310

1,450

1,560

1,550

1,480

1,320

*1,280

1,340

1,530

1,750

1,980

2,190

2,210

2,610

2,790

2,690

2,390

2,150

2,070

2,110

2,070

1,950

1,860

56,670

1,889

112,400

July

1,760 

1,630

1,480

1,340

1,240

1,170

1,080 

985

913

*842

786

732

658

628

59!'

56<: 53'

51(1

51:.

530

989

1,450

790

626

549

500

479

459 T79-

493 

459

25,776

831

51,130

Aug.

640 

486

675

668

798

*626

619 

556

500

453

417

378

366

328

336

341

336

323

294 3C5~

385

528

735

682

535

441

417

405

1,650

3,350 

 5TT

19,484

629

38,650

Sept.

668 

507

453

429

423

411

388 

366

361

*372

366

356

350

356

350

341

336

336

328

314

288

284

TBT

284

291

291

288

288

298

302

10,709

357

21,240

Calendar year 1950: Max 2,730 Mln 222 Mean 603 Ac-ft 436,900

Water year 1950-51: Max 3,350 Mln 160 Mean 646 Ac-ft 467,800

Peak discharge (base, 2,850 cfs). June 21 (10 p.m.) 2,990 cfs (3.37 ft); July 21 (11:30 p.m.)

4,4OO cfs (4.44 £t); Aug. 23 (7 p.m.) 5,820 cfs (5.45 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 3-7, Dec. 31 to Feb. 22.
GREEN RIVER BASIN

Willow Creek above diversions, near Ouray, Utah

Location. Lat 39°34', long. 109°35', in NW£ sec. 32, T. 14 S., R. 21 E., on right bank

nair a mile upstream from Reid Ranch and 48 miles southerly from Ouray. 

Records available.--August 1950 to September 1951. 

uage.--water-stage recorder.

Extremes.--1950: Maximum discharge during period August to September,.38 cfs Sept. 20 

(gage height, 4.67 ft); minimum, 12 cfs Sept. 3.

1950-51: Maximum discharge during water year, 131 cfs July 16 (gage height, 6.19 

ft); minimum, 3.4 cfs July 30.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wnTc~h are poor.

Rating tables, Aug. 1, 1950, to Sept. 30, 1951, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Aug. 1, 1950, to 

Apr. 1, 1951

4.2 9.4 4.2 3.0 4.7 27

4.3 14 4.3 6.7 5.0 46

4.5 25 4.5 16

Discharge, in cubic feet per second, 1949-50 

1949

Apr. 2 to Sept. 30, 1951

Day

1

2

3

4

5

6

7

8

Ac -ft

Aug.

Ul6

*16

16

16

Sept.

14

13

13

13

13

14

14

15

Day

9

10

11

12

13

14

15

16

Aug.

14

T5

16

16

15

15

15

15

Sept.

16

16

18

17

17

17

16

16

Day

17

18

19

20

21

22

23

24

Aug.

15

15

14

14

14

14

15

14

Sept.

16

15

*16

19

T7

17

16

17

Day

25

26

27

28

29

30

31

Aug.

14

15

17

IS

15

15

14

932

Sept.

17

16

15

15

14

14

_

924

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and 

records for Willow Creek near Ouray.

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

15

16

15

15

14

Tl

14

14

14

14

15

15

15

16

16

*17

17

17

17

17

17

18

T7

18

17

18

18

18

18

18

499

16.1

990

Nov.

20

20

20

19

18

20

20

21

19

11

18

19

20

21

*19

17

18

19

20

20

23

20

18

18

18

19

17

17

19

21

575

19.2

1,140

Dec.

22

17

22

21

20

19

20

23

20

17

18

20

*17

17

20

18

14

15

535

17.3

1,060

Jan.

16

(»)

15

15

494

15.9

980

Feb.

15

15

16

16

17

18

19

20

21

22

23

24

):_

-

566

20.2

1,120

Mar.

1 '"

) "

27

28

31

32

30

25

21

?2

26

28

31

30

25

24

25

29

34

36

28

30

34

34

32

26

26

29

27

870

28.1

1,730

Apr.

26

*26

27

34

34

33

30

28

26

32

25

26

26

27

25

25

23

23

22

22

22

22

21

18

17_

17

19

17

21

30

-

744

24.8

1,480

Calendar year 1950: Max - Mln - Mean -

May

20

21

25

*25

25

24

23

22

22

21

21

21

20

20

22

22

21

22

21

20

20

19

20

19

17

17

17

*17

16IB16

632

20.4

1,250

June

17

22

23

2T

19

17

16

15

14

14

14

13

13

14

13

13

12

16

13

11

13

11

11

10

10

10

9.5

9.0

8.1

S7T

-

409.7

13.7

813

Ac-ft -

July

7.2

7.2

6.7

6.3

6.0

5.6

5.6

5.2

4.8

5.2

4.8

*4.5

F75

5.6

5.6

19

T3

12

8.6

8.6

11

9.5

10

9.0

9.0

7.6

8.1

7.2

6.7

6.0

7.6

238.4

7.69

473

Aug.

*12

17

23

16

12

9.0

8.1

6.3

6.3

6.7

6.7

6.0

5.2

5.2

4.5

4.8

*4.5

4.5

5.2

6.7

14

11

7.6

7.6

6.3

6.0

5.2

6.0

19

41

TS

311.4

10.0

618

Sept.

13

1C

9.5

9.5

9.0

8.1

~S7T 7.6

7.6

7.6

.7.6

7.6

8.1

8.1

8.1

8.6

8.6

8.6

*9.0

9.0

9.0

9.5

9.5

10

10

10

10

11

13

12

-

277.3

9.24

550

Water year 1950-51: Max 41 Min 4.5 Mean 16.9 Ac-ft 12,200

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Willow 

Creek near Ouray.

Note.--Stage-discharge relation affected by ice Nov. 10-14, 16, 17, 19, 20, Dec. 5-8, Dec. 18 to 

Apr. 1 (no gage-height record during part of period; discharge computed on basis of 3 discharge 

measurements, weather records, and records for nearby streams).
268 GREEN RIVER BASIN

Willow Creek near Ouray, Utah

Location. Lat 39°56'30", long. 109°39'00", in sec. 32, T. 10 S., R. 20 E. Salt Lake merldian, on left bank 8 miles upstream from mouth and 10 miles south of Ouray.

Drainage area.--967 sq mi.

Records available.--July 1947 to September 1951.

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during year, 64 cfs Mar. 26 (gage height, 1.66 ft); no flow 

 for part of July 8, 24, 25.

1947-51: Maximum discharge, 905 cfs Aug. 6, 1947 (gage height, 5.56 ft), from rating

curve extended above 200 cfs on basis of slope-area determinations at gage heights 4.27

and 5.18 ft; no flow at times.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation above station. Records of chemical analyses 

and water temperatures for the. water year 1951 are given in Water-Supply Paper 1200.

Rating table, water year 1S5O-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.6 

.7

1.4 

3.4

1.0 

1.2 

1.4 

1.7

6.5

16

32

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

15

17

21

21

21

*20

19

20

*21

21

21

22

*23

21

22

21

22

22

22

*22

23

22

22

23

22

*23

23

24

24

*24

24

668

21.5 

1,320

Nov.

24

26

*27

28

27

*29

28

28

28

11

23

25

*29

32

*38

29

31

34

36

45

49

*38

35

31

28

28

*29

28

28

34

-

916

30.5 

1,820

Dec.

*37

31

24

36

*38

21

24

*37

45

43

40

*35

35

30

31

38

33

21

24

23

*23

22

21

20

> *18

858

27.7 

1,700

Jan.

17

16

16

525

16.9 

1,040

Feb.

16

16

17

18

19

20

21

22

23

1"

N

> 30

_

_

-

650

23.2 

1,290

Mar.

a30~ 30

a30

a3O

a35

*43

42

48

50

49

33

32

34

40

42

*49

49

37

37

41

47

52

*59

4?

46

*54

53

52

40

38

47

1,317

42.5 

2,610

Apr.

42

*42

39

42

51_

*49

48

43

46

43

48

38

 41

42

43

*40

39

39

38

37

36 '37

32

22

19

14

 13

14

14

20

-

1,071

35.7 

2,120

May

20

17

*13

9.9

10

8.6

5.6

4.6

4.3

3.2

*3.4

3.0

278" 2.6

3.0

4.0

*5.9

6.2

9.1

14

11

9.9

8.2

10

9.5

8.2

6.5

5.9

5.6

4.6

3.7

233.3

7.53 

463

June

3.0

4.6

4.6

10

11

6.9

6.2

5.3

4.0

1.6

1.4

2.4

2.6

3.0

3.2

1.6

1.8

1.3

2.2

3.7

3.4

3.0

2.4

1.8

1.6

1.6

.4

7T

.4

.4

94.2

3.14 

187

July

0.3-

.3

.3

.5

.3

.3

.2

.1

.2

*.2

.2

.2

.1

.1

.1

.1

.2

.2

.1

.3

.3

^Z

t \

.2

.2

.1

.1

.2

.2

.2

8.2

0.26 

16

Aug.

0.3

.4

2.1

11

6.5

4.3

3.2

2.2

1.4

 1.0

.8

.9

.8

.7

.4

.3

.2 72"

.3

.4

.6

2.0

2.6

1.3

1.4

1.2

.6

.6

1.1

4.1

16

68.9

2.22 

137

Sept.

476" 6.9

1.3

.9

.3

.8

.7

178

1.1

1.6

2.C

1.3

l.C

.9

1.0

.1

.4

.3

* .4

.4

.4

.6

.3

..3

.3

.6

.3

.6

.0

48.0

1.60 

95

Calendar year 1950: Max 122 Min 4.7 Mean 35.6 Ac-ft 25,780

Water year 1950-51: Max 59 Min o.l Mean 17,7 Ac-ft 12,800

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and weather records.

Note.--Stage-discharge relation affected by ice Nov. 11-14, 17, 18, Dec. 19 to Mar. 1.
GREEN RIVER BASIN 269

Minnie Maud Creek near Myton, Utah

Location.--Lat 39°48', long. 110°34', in SW^- sec. 3, T. 12 S., R. 12 E. Salt Lake meridlan, on left bank 40 miles southwest of Myton.

Records available. August 1950 to September 1951. 

Gage.--Water-stage recorder.

Extremes. 1950: Maximum discharge during period August to September, 12 efs Sept. 7 (gage 

 height, 4.37 ft); minimum, 1.5 efs Sept. 3.

1950-51: Maximum discharge during year not determined, occurred during period of no 

gage-height record; minimum, 0.2 cfs on several days in September.

Rating table, period Aug. 1, 1950, to Sept. 30, 1951 (gage height, 

in feet, and discharge, in cubic feet per second]

3.8 0.1 4.1 3.4

3.9 .7 4.2 5.9

4.0 1.7 4.3 9.6

Day

1

2

3

4

5

6

7

8

9

10

Ac-f1

Aug.

\

>a4.0

J

*3.9

3.6

3.6

3.4

3.2

3.2

3.2

Sept.

1.9

1.9

1.7

1 .7

1.7

1.7

3.0

*2.6

2.2

2.4

Day

11

12

13

14

15

16

17

18

19

20

Aug.

3.4

3.2

3.4

3.2

3.1

3.1

2.9

2.7

2.6

2.6

Sept.

2.4

2.2

2.0

2.4

2.4

2.6

2.2

2.4

2.6

2.7

Day

21

22

23

24

25

26

27

28

29

30

31

Aug.

2.4

2.6

2.6

2.6

2.6

2.6

2.2

2.0

1.9

1.7 1'.9

181

Sept.

2.2

2.0

2.4

2.4

2.2

2.0

2.0

1.9

1.9

1.7

-

2.18

130

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.0

2.2

T79

1.7 

*1.9

1.7

1.9

1.7

1.7

1.7

1.6

TTS

1.6

1.7

1.9

2.2

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.2

2.2

2.0

2.2

2.2

2.2

2.2

2.2

60.4

1.95

12C

Nov.

2.2

2.2

> 2.2

2.2

2.0

*2.0

1.8

1.7

1.6

L.1.5

J 1.6

1.7

1.6

1.5

1.4 "

-

49.5

1.65

98

Dec.

1.3

1.3

. 1.3

(*)

» 1.2

38.7

1.25

77

Jan.

1.0

.9

.8

.7

30.4

0.98

60

Feb.

0.7

(*)

.8

.9

. 1.0

-

-

-

25.6

0.91

51

Mar.

1.1

1.2

1.3 

1.4

1.5

2.0

3.0

3.3

2.5

2.6

2.8

3.0

3.3

(*)

> 3.5

76.0

2.45

151

Apr.

> 4.0

5.0

. 4.0

4.5

*5.2

-

131.7

4.39

261

May

4.4

3.4

3.9 

3.6

4.2

5.2

5.9

5.9

5.4

5.2

5.4

5.4

*5.6

5.4

,

I a6.0

f

J

 a9 .0

*8.1

7.8

199.2

6.43

395.

June

7.4

T70

7.4 

5.9 

5.4

5.2

4.6

4.4

4.4 4.6-

4.2

3.9

3.9

3.6

3.2

3.2

3.2

3.2

3.1

4.2

4.6

3.6

3.6

3.2

3.1

2.9

2.7

2.6

2.4

27£

-

123.1

4.10

244

July

2.4

772

*2.2 

2.2

1.9

1.9

1.6

1.6

1.6

1.6

1.5

1.6

1.4

1.4

1.4

1.4

1.6

1.5

1.3

1.6

1.6

1.7

1.4

1.2

1.1

.7

l.T

1.0

1.1

1.1

*.9

46.8

1.51

93

Aug.

0.9

1.0

1.6 

3.6

T77

1.3

1.2

1.0

1.0

1.0

1.0

1.0

.9

.8. s

.9

.9

.9

.9

1.5

1.3

1.2

a2.0

a3.0

a2.5

a2.5

a2.5

a2.5

*2.4

1.7

1.2

46.7

1.51

93

Sept.

1.0

T^

1.0 

.7 

.7

.7

.6

.6

.6

.6

.6

.6

.6

.4

.4

.3

.3

.3

.3

.Z

.2

.3

.3

.3

.2

.2

.2

.2

.3

.4

-

14.1

0.47

28

Calendar year 1950: Max - Mln - Mean - Ao-ft -

Water year 1950-51: Max - Mln 0.2 Mean 2.31 Ao-ft 1,670

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

Note. Stage-discharge relation affected by ice Oct. 31, Nov. 1, 3-5, Nov. 9 to Apr. 29 (no gage 

height record Dec. 3 to Apr. 29; discharge estimated on basis of 4 discharge measurements, weather 

records, and records for nearby streams).
270 GREEN RIVER BASIN

Minnie Maud Creek at Nutter Ranch, near Myton, Utah

Location. Lat 39°48'45", long. 110°15'00", in SE£ sec. 32, T. 11 S., R. 15 E., on left 

Dank: three-quarters of a mile upstream from Gate Canyon, 18 miles north of Sunnyside, 

22 miles upstream from mouth, and 29 miles south of Myton.

Drainage area. 231 sq ml.

Records available. July 1947 to September 1951.

Gage. Water-stage recorder.

Extremes.--Maximum discharge during year, 143 cfs May 21 (gage height, 2.93 ft); no flow 

July 20, Aug. 1.

1947-51: Maximum discharge, 704 cfs Aug. 22, 1947 (gage height, 5.96 ft), from rating curve extended above 180 cfs on basis of slope-area determination at gage height 

5.50 ft; no flow July 20, Aug. 1, 1951.

Remarka.--Records good except those for periods of ice effect'or no gage-height record, 

which are fair. Some diversions above station for irrigation.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Apr. 19 to May 13, July 27 to Aug. Z)

1.0 

l.Z 

1.3 

1.5

.5 

1.1 

3.5

1.7 

1.9 

Z.I

7.9

16

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Zl

2Z

23

24

25

26

27

28

Z9

30

31

Total

Mean

Ac-ft

Oct.

16

15

15

15

*15

15

15

15

15

a!5

a!6

a!6

16

17

*TT

16

16

16

16

16

16

16

16

16

15

15

48Z

15.5

356

Nov.

16

16

15

16

16

16

16

*16

14

11

13

14

14

14

14

14

14

15

19

IF

15

14

13

12

13

13

13

*13

13

1Z

-

431

14.4

855

Dec.

13

) -

1"

1Z

1Z

1Z

1Z

11

10

(*)

10

346

11. Z

686

Jan.

9

279

9

553

Feb.

1 

1

10 *n

11

all

_

_

-

Z97

10.6

589

Mar.

 alZ

*1Z

1Z

1Z

11

10

9.9

1Z

1Z

12

14

10

11

13

13

15

*16

12

13

14

15

15

1Z

1Z

13

14

386.9

1Z.5

767

Apr.

13

12

10

1Z

11

10

9.6

8.9

8.Z

9.Z

*9.Z

8.6

.6

.3

.4

.4

.Z

.1

.O

.1

.1

.1

.0

.0

.9

.8

.7

.5

.5

*.4

-

148.8

4.96

Z95

May

~O.4

.5

.5

.6

.7

.9

.9

1.5

1.0

.9

1.3

1.5

*Z.4

7.5

11

8.Z

6.9

9.Z

14

Z4

Z3

Zl

zz

Z3

Z3

Z3

ZZ

Zl

*Z1

17

310.3

10.0

615

June

13

14

14

13

10

9.9

7.6

5.Z

4.6

5.0

4.4

4.1

3.4

Z.8

Z.4

Z.5

Z.5

Z.5

Z.5

Z.4

3.1

Z.I

1.4

*1.0

1.0

1.0

.7

7T

1.3

1 .6

-

139.7

4.66

Z77

July

Z.4

ZTT5

1.1

1.1

1.0

1.0

.8

.7

.8

.8

.7

.4

.4

.3

.3

.4

.3

.2

.1

0

.5

.6

.4

.3

1.3

.3

.4

.Z

.Z

.2

*.l

19.3

0.6Z

38

Aug.

O

.Z

.7

Z.9

Z.8

1.3

.4

.Z

.4

.3

.5

1.4

1.4

l.Z

Z.O

3.4

Z.7

2.5

2.8

Z.8

Z.8

Z.9

13

~9.6 18

8.6

7.9

7.6

*7.4

8.Z

9.6

1Z5.5

4.05

Z49

Sept.

9.Z

BT¥

8.Z

8.2

7.6

7.4

7.Z

6.6

6.4

5.4

4.8

4.8

4.6

3.7

3.4

2.8

Z.4

1.6

1.1

.8

.5

1.0

.9

.9

.6

.5

.4

.3

8

1.0

-

112.0

3.73

222

Calendar year 195O: Max 170 Min 3.4 Mean 30. Z Ac-ft zi,88O

Water year 195O-51: Max Z4 Min o Mean 8.43 Ac-ft 6,1OO

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records 

and records for nearby stations.

Note. Stage-discharge relation affected by ice Nov. 10-17, Dec. Z-ll, Dec. 18 to Feb. Zl (no gageheight record Jan. 5 to Feb. 7; discharge estimated on basis of 1 discharge measurement, and weather 

records).
GREEN RIVER BASIN 271

Gooseberry Creek near Scofield, Utah

Location. Lat 39°43' , long. 111°18', in SW^ sec. 6, T. 13 S., R. 6 E., on right bank 300 

re downstream from old Mammoth Dam, £>^ miles upstream from mouth, and 7 miles west of 

Scofield.

Drainage area. 16.4 sq mi.

Records available . October 1930 to September 1931, May 1940 to September 1951.

Gage. Water-stage recorder. Altitude of gage Is 8,300 ft (from topographic map). OctoE'er 1930 to September 1931, water-stage recorder at different datum.

Average discharge. 12 years, 19.1 cfs.

Extremes. --Maximum discharge during year, 189 cfs May 20 (gage height, 1.68 ft); minimum 

not determined, occurred during period of ice effect or no gage-height record.

1930-31, 1940-51: Maximum discharge, 366 cfs May 18, 1941 (gage height, 2.25 ft); 

minimum recorded, 1.6 cfs Aug. 30, 1946.

e effect or no gage-height record, 

tion to Sevier River basin for irriRating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.0 

.1

.5

0.3

3.6

8.5

27

0.8 

1.2

1.6

54

105

180

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2 

3

4

5

6

7

8

9

10

11

12

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

4.1 

4.1

4.1

5.1

*3.6

3.3

3.6

3.3

3.3

3.3

3.3

 575 2.9

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

4.1

4.1 

4.6

4.1

4.1

3.6

4.1

112.2

3.62

223

Nov.

4.6

5.1 

5.1

4.6

4.6

4.1

4.1

4.1 3.6'

3TE

3.6

3.6

3.6

*5.6

5.6

5.6

4.6

5.6

17

IF

17

14

9.0

6.5

5.6

Si4.1

3.6

4.1

-

187.4

6.25

372

Dec.

4.6

4.1 } ^

> 3.5

3

2.5

102.2

3.30

203

Jan.

 2.5

} *

76.0

2.45

151

Feb.

} *

2.5

_

_

-

68.5

2.45

136

Mar.

1 -.

j

3

^ 3.5

1 4

4.5

*4.6

4.6

4.6

101.8

3.28

202

Apr.

4.6 476- 

4.6

5.6

6.0

11

8.0

9.0

11

15

15

16

19

24

29

32

35

36

35

36

36

35

46

52

33

31

39

44

34

-

744.4

24.8

1,480

May

27

24 

22gS"

35

42

50

57

57

*77

101

107

84

71

77

84

99

121

134

151

163

141

134

159

161

165 T53"

155

135

118

104

3,046

98.3

6,040

June

95

74

63

*57

52

50

48

46

44

41

41

39

36

35

34

36

*43

37

35

35

34

33

29

27

25 

24

22

21

20

-

1,261

42.0

2,500

July

19

17

16

16

15

15

14

14

14

13

13

12

12

12

12

15

12

12

13

19

14

12

11 *TT

11 

12

11

11

11

11

418

13.5

829

Aug.

11

12 

16

20

TS

14

11

9.6

9.6

9.0

8.5

8.0

7.5

*7.5

7.0

6.5

7.0

7.0

7.0

7.0

7.5

8.0

8.0

9.6

8.0

7.0 

6.5

-575 6.0

7.5

7.0

282.8

9.12

561

Sept.

6.5

 B75 

6.0

5.6

5.6

5.6

5.1

5.1

5.1

5.1

5.1

4.6

4.6

4.6

4.6

4.6

*4.6

4.6

4.6

4.1

3.6

4.1

3.6

3.6

3.6

3.3 

376

3.6

4.1

4.1

-

138.9

4.63

276

Calendar year 1950: Max 200 Min - Mean 16.5 Ac-ft 11,920

Water year 1950-51: Max 165 Min - Mean 17.9 Ac-ft 12,970

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 3 to Mar. 28 (no gage-height record Feb. 28 to 

Mar"!2~8; discharge estimated on basis of weather records and records for nearby stations).
272 GREEN RIVER BASIN

Price River above Scofield Reservoir, near Scofield, Utah

Location. Lat 39°46'35", long. 111°10'35", in SE£ sec. 18, T. 12 S., R. 7 E., on left 

DanK at mouth of canyon, 800 ft upstream from bridge, half a mile upstream from Pontown 

Creek, and 4 miles north of Scofield.

Drainage area. 62 sq mi, approximately.

Records available. June 1931 to September 1932 (fragmentary, published as Pish Creek 

aoove reservoir, near Scofield), October 1938 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,630 ft (from topographic map). June 

T931 to September 1932 at site 300 ft downstream at different datum.

Average discharge. 13 years (1938-51), 45.1 cfs.

Extremes. Maximum discharge during year, 433 cfs May 20 (gage height, 2.37 ft); minimum 

riot determined, probably occurred during period of no gage-height record.

1931-32, 1938-51: Maximum discharge, 673 cfs May 19, 1932; minimum recorded, 3 cfs 

Sept. 10-30, 1932, Nov. 9, 1942, Oct. 24, 1945.

Remarks. Records excellent except those for periods of ice effect or no gage-height recoroT which are fair. Small transmountain diversions in headwaters for irrigation in 

Sevier Lake basin, and one diversion above station for irrigation.

Rating table, water year 1950-51, except period of ice effect 

(gage height, In feet, and discharge, in cubic feet per second)

0.0 

.1 

.2 

.4

4.5

7.6

13

0.8 

1.4 

1.9 

2.3

172

283

406

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

12

IT

11

11

*11

9.8

9.8

9.8

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.8

9.8

10

10

11

11

11

11

10

11

311.4

10.0

618

Nov.

12

12

13

11

11

10

*10

10

9.8

7.0

b8.0

b8.4

b8.6

8.7

b8.5

b8.0

b8.7

9.8

b20

b23

b22

b!7

b!3

bll

blO

blO

blO

b9

b8

b8

335.5

11.2

665

Dec.

 b8

(*)

> 8

7

6

6

243

7.8

482

Jan.

(*)

6

5

4

4

181

5.8

359

Feb.

} '

4.5

5

6

(*)

-

_

-

159.5

5.70

316

Mar.

1 .

I

> 7

(*)

1 9

} »

11

12

14

244

7.9

484

Apr.

 2T 17

28

33

40

50

40

50

60

67

64

70

*76

82

94

99

105

107

107

110

108

104

123

TED" 140

112

105

120

137

120

-

2,509

83.6

4,980

May

107

98

96 10~8"

123

142

172

196

194

*231

280

305

270

242

237

242

263

302

324

365

'S5S 399

336

361

*374

382

368

339

302

268

242

8,026

259

15,920

June

220

T9F

180

159

144

130

121

*120

113

107

104

98

93

88

86

81

81

92

81

79

77

73

69

62

57

52

49

44

42

40

-

2,940

98.0

5,830

July

38

36

34

33

31

30

29

28

29

28

28

*28

27

27

27

27

37

31

27

30

' 3150

28

26

26

25

26

26

26

23 27

918

29.6

1,820

Aug.

23

25

31

41

35

29

24

21

*20

19

18

17

16

16

14

14

*14

17

16

16

19

20

16

18

16

14

13

12 IB"

16

16

599

19.3

1,190

Sept.

14

TT

13

12

12

12

12

11

11

11

*11

11

11

11

9.8

10

9.8

8.7

9.2

8.1

7.6

8.1

8.1

7.6

7TT

7.6

7.6

8.1

9.2

9.8

-

302.9

10.1

601

Calendar year 1950: Max 432 Mln - Mean 44.2 Ao-ft 32,010

Water year 1950-51: Max 399 Mln - Mean 45.9 Ao-ft 33,260

Peak discharge (base, 550 efa). May 20 (I0i30 p.m.) 433 ofs (2.37 ft).

* Discharge measurement made oh this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 10, Dec. 21 to Apr. 9, Apr. 11-13, Sept. 10 (stage-discharge relation affected by ice during part of winter period)} discharge estimated on basis of 4 discharge 

measurements, weather records, and records for nearby streams.
GREEN RIVER BASIN 273

Scofield Reservoir near Scofield, Utah

Location.--Lat 39°47', long. 111°08', in sec. 10, T. 12 S., R. 7 E., on right bank 200 ft 

rrom face of dam on Price River and 5 miles northeast of Scofield.

Drainage area. 163 sq mi.

Kecoras available. October 1941 to September 1951. Fragmentary records 1926 to 1941 on 

rue in orrice of State engineer.

Sage. Inclined staff gage read to tenths about 9 a.m. daily. Datum of gage is mean sea 

level (levels by Bureau of Reclamation). Prior to Nov. 8, 1945, at site 800 ft upstream (200 ft upstream from old dam) at datum 4.51 ft higher.

Extremes. Maximum net contents during year. 54,560 acre-ft June 3-7 (elevation, 7,613.4 

rt); minimum, 25,040 acre-ft Oct. 26-28 (elevation, 7,601.1 ft).

1941-51: Maximum net contents, 54,560 acre-ft June 9, 10, 1950, June 3-7, 1951. 

Maximum contents known, about 56,500 acre-ft at time partial failure of dam occurred 

[fey 21, 1928 (elevation, about 7,607.2 ft).

Remarks.--Reservoir is formed by earth and rock fill, rock-faced dam 800 ft downstream 

rrom old dam in use to Nov. 7, 1945. Usable capacity of reservoir formed by new dam 

is 65,780 acre-ft between elevations 7,586.0 ft (bottom of outlet works) and 7,617.5 

ft (crest of spillway). Dead storage, 8,000 acre-ft below elevation 7,586.0 ft. Figures given herein represent usable contents at time gage is read. Water used for irrigation in vicinity of Price.

Cooperation. Capacity table furnished by Bureau of Reclamation.

KevisionsTwater years).--¥ 1089: 1946.

Contents, in acre-feet, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

26,940

26,520

26,520

26,520

26,520

26,300

26,300

26,090

26,090

26,090

26,090

26,090

25,880

25,880

25,880

25,670

25,880

25,670

25,670

25,460

25,250

25,250

25,250

25,250

25,250

25,040

25,040

25,040

25,250

25,250

25,250

Nov.

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,250

25,460

25,460

25,460

25,460

25,460

25,670

25,670

25,880

25,880

25,880

26,090

26,090

26,090

26,300

26,300

26,300

26,520

-

Dec.

26,520

26,520

26,730

26,730

26,940

26,940

26,940

26,940

27,160

27,160

27,160

27,160

27,160

27,160

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

27,370

Jan.

27,590

27,590

27,800

27,800

27,800

28,020

28,020

28,020

28,240

28,240

28,240

28,240

28,450

28,450

28,450

28,450

28,450

28,450

28,670

28,670

28,670

28,670

28,890

28,890

28,890

28,890

29,110

29,110

29,110

29,110

29,330

Feb.

29,330

29,330

29,330

29,550

29,550

29,550

29,550

29,770

29,770

29,770

29,990

29,990

29,990

29,990

30,210

30,210

30,210

30,210

30,430

30,430

30,430

30,430

30,660

30,660

30,660

30,660

30,880

30,880

_

_

-

Mar.

30,880

30,880

31,100

31,100

31,100

31,100

31,100

31,330

31,330

31,330

31,330

31,330

31,550

31,550

31,550

31,550

31,550

31,550

31,550

31,550

31,780

31,780

31,780

31,780

31,780

31,780

31,780

31,780

32,010

32,010

32,230

Apr.

32,460

32,690

32,910

33,140

33,370

33,370

33,600

33,600

33,600

33,600

33,830

33,830

34,060

34,300

34,530

34,530

34,760

34,990

35,230

35,230

35,460

35,700

35,930

36,170

36,170

36,400

36,400

36,640

36,890

37,120

May

37,350

37,830

38,070

38,310

38,550

38,790

39,030

39,280

39,760

40,000

40,250

40,740

41,230

41,720

42,460

42,960

43,460

43,960

44,710

45,220

46,230

47,250

48,280

49,310

49,830

50,870

51,650

52,440

52,970

53,500

53,760

June

54,030

54, 300

54,560

54,560

54,560

54,560

54,560

54,300

54,030

54,030

53,760

53,500

53,500

53,500

53,230

52,970

52,710

52,970

52,440

52,180

52,180

51,920

51,920

51,920

51,920

51,650

51,650

51,650

51,390

51,390

-

July

51,130

50,870

50,610

50, 350

49,570

49,310

48,790

48,280

47,760

47,250

46,740

46,230

45,720

45,220

44,710

44,210

43,710

43,460

42,960

42,460

42,220

41,970

41,480

41,230

40, 740

40,250

40,000

39,760

39,520

39,280

39,030

Aug.

38,790

38,550

38,310

38,310

38,310

38,310

38,310

38,310

38,310

38,070

38,070

37,830

37,590

37,350

37,350

37,120

36,890

36,400

36,170

35,930

35,700

35,460

35,230

35,230

35,230

35,230

34,990

34,760

34,530

34,530

34,300

Sept:

34,060

33,600

33,600

33,370

33,140

33,140

32,690

32,690

32,230

32,230

31,780

3.., 330

30,880

30,430

30,210

29,990

29,550

29,330

29,110

28,890

28,450

28,240

28,020

27,800

27,590

27,370

27,160

26,940

26,730

26,52O

-

Monthly elevations and contents, water year October 195O to September 1951

Date

Calendar year 1950....

Water year 1950-51....

Elevation 

(feet)

-

-

Contents 

(acre-feet)

-

-

Change In contents 

during month 

(acre-feet)

-1,690

+6,050

-420

Note.--8,OOO acre-ft of dead storage not included In contents.
GREEN RIVER BASIN

Price River near Scofield, Utah

Location. Lat 39°47' , long. Ill"07', in SE£ sec. 10, T. 12 S., R. 7 E., on left bank 800 

rt aownstream from Scofield Reservoir Dam, 5 miles northeast of Scofield, and 9 miles 

upstream from White River.

Drainage area. 163 sq mi.

Records r-ds available.--November 1917 to September 1921, June to September 1925, April 1926 

._ jpTemEer~T93T, October 1938 to September 1951. Prior to October 1938 published as ] 

Creek near Scofield.

Gage. Water-stage recorder and concrete control at present site since Nov. 2, 1945. Dafum of gage is 7,570.13 ft above mean sea level (levels by Bureau of Reclamation). Nov. 

17, 1917, to Sept. 30, 1921, Oct. 25, 1938, to Nov. 1, 1945, water-stage recorder, and 

June 15 to Sept. 30, 1925, Apr. 27, 1926, to Sept. 30, 1931, staff gage, at various 

datums.

Average discharge.--18 years (1926-31, 1938-51), 58.9 cfs.

Extremes.--Maximum daily discharge during year, 284 cfs July 15, 16; practically no flow 

during winter when reservoir gates were closed.

1917-21, 1925, 1926-31, 1938-51: Maximum discharge, 1,000 cfs on or about May 24, 

1920 (gage height, 10.4 ft from floodmark, site and datum then in use), from rating 

curve extended above 500 cfs. Practically no flow each winter while reservoir gates are 

closed.

Remarks. Records good except those for periods of no gage-height record and those affected 

5J~Eackwater, which are fair. Plow completely regulated by Scofield Reservoir (see 

preceding page). Small diversions above Scofield Reservoir for irrigation.

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-28, July 9 to Aug. 4, Aug. 16)

0.4

.5

0.1 

1.0

0.9 

1.1 

1.4 

1.8 

2.1

131

231

286

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1

\ a43

1

J

*43

43

43

43

43

43

37

26

18

6.2

22

34

32

32

32

24

14

14

14

14

14

14

9.0

5.8

5T&

5.8

846.6

27.3

1,680

Nov.

5.8

57S

5.8

5.8

2.4

.4

**.4

. a. 2

-

31.0

1.03

61

Dec.

(**)

. ao.2

6.2

0.20

12

Jan.

(**)

aO.2

6.2

0.20

12

Feb.

 aO.2

(**)

.

-

5.6

0.20

11

Mar.

> aO.3

**.3

.3

.3

 5

.3

.3

.3

.3

.3

.3

.3

9.3

1.30

18

Apr.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.2 **7Z

.3

.4

32

50

50

50

50

50

50

50

59

93

9T

91

50

.9

.9

.9

-

774.9

25.8

1,540

May

0.9

.9

.8 28 

50

75

77

79

89

66

*68

68

68

45

30

30

43

75

86

47

1.8

1.8

2.0

2.0

*20

75

85

111

114

124

184

1,747.2

56.4

3,470

June

165

162

165

176

193

202

202

*202

202

202

202

202

200

204

TBlf

204

202

184

184

184

137

123

123

100

91

91

91

93

*140

45

-

4,857

162

9,630

July

52sr

71

86

*246

231

208

250

270

254

244

*266

272

266

' 284

284

264

254

254

253

228

247

263

264

257

252

255

255

222

213

227

7,073

228

14,030

Aug.

231 S3T

139

85

32

32

12

.9

*38 

60

79

79

79

79

101

159

*184

167

150

150

120

103

94

60

75

79

86

93

93

101

111

3,102.9

100

6,150

Sept.

Ill

111

114 ioi

9£

12C

12S

123

134

16?

*17S

173

17f

T7F

15S

14f

143

12? 12?

12?

131

131

13]

131

131

131

131

12C

101

105

-

3,972'

13?

7,88C

Calendar year 1950: Max 252 Mln - Mean 55.3 Ac-ft 40,040

Water year 1950-51: Max 284 Mln - Mean 61.5 Ac-ft 44,490

Discharge measurement made on this day.

Field estimate made on this day.

. readings and time of 

id July 6 to Sept. 30.
GREEN RIVER BASIN 

White River near Soldier Summit, Utah

275

Location (revised) . Lat 39°55'20", long. 111°03'25", in NEij sec. 30, T. 10 S., R. 8 E., 

on leii banlc bUO ft downstream from North Pork and 1 mile southeast of Soldier Summit.

Records available.--April 1938 to September 1951.

Gage. Water-stage recorder and concrete control. Altitude of gage is 7,340 ft (from topographic map).

Average discharge. 12 years (1939-51), 18.3 cfs.

Extremes. Maximum discharge during year, 130 cfs May 12 (gage height, 1.55 ft); minimum 

not determined, probably occurred during period of no gage-height record.

1938-51: Maximum discharge, 288 cfs May 10, 1941 (gage height, 3.70 ft); no flow at 

times in July, August, September 1939.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wmcn are fair. Two small diversions from North Fork for irrigation.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in eubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 7)

0.2 1.2

.3 2.8

.4 5.3

.5 9.1

0.7 

.9

1.5

78

136

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

3.3

3.3

3.3

*3.0

37CT

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.3

3.0

3.3

3.3

3.3 

3.8 

375

96.5

3.11

191

Nov.

3.3

3.6

2.8

3.0

3.0

3.0

*3.0

3.0

3.0

2.6

2.8

2.8

2.8

3.0

3.3

3.3

3.5

3.5

6.1

577

1

> b5 C

j

, b4.5

.

113.7

3.79

226

Dec.

b4.5

b4.5

. b4

(*)

4

\ ->

123.5

3.98

245

Jan.

(*)

3.5

1 '

107.0

3.45

212

Feb.

r 

3.5

(*)

.

96.5

3.45

191

Mar.

i

[ 3.5

1I'

4.5

 5

1 ..

1

7

i

1

9

169.0

5.45

335

Apr.

10T5"

21

27

29

30

34

41

50

55

45

*44

*46

56

63

66

66

69

69

69

69

69

78

89

W

*76

69

70

85 

82

1,672

55.7

3,320

May

73

64

"S3 60

69

87

106

122

118

*116

122

126 150"

116

100

89

83

87

69

94

110

110

108

*102

100

94

91

83

76 

70 

66

2,914

94.0

5,780

June

635~9~

56

51

47

46

43

*42

41

38

37

35

31

26

26

25

23

22

21

22

23

20

20

19

17

17

16

15

15 

14

930

31.0

1,840

July

14

TS

14

13

13

13

12

12

11

11

11

*10

10

a. e

9-.1

9.1

8.7

7.2

6.8

8.3

10

8.0

7.2

6.4

6.4

6.4

6.4

7.2

7.2 

6.1 

5.7

292.8

9.45

581

Aug.

6.1

6.1

7.6

135".0

7.6

6.1

*5.3

5.0

5.0

4.8

4.6

5.3

4.3

4.0

4.0

*4.3

4.0

4.6

4.6

4.6

4.6

4.3

4.3

3.8

3.6

3.0

3 . 0

3.8 

4.3 

3.8

157.4

5.08

312

Sept.

373- 3.6

3.0

3.0

3.0

3.0

3.0

3.0

2.8

*3.0

3.0

3.3

3.6

3.3

3.3

3.6

3.3

3.6

3.3

3.3

3.0

3.3

3.6

3.3

3.3

3.0

3.0

3.3

3.6 

3.6

97.3

3.24

193

Calendar year 1950: Max 198 Min - Mean 22.6 Ac-ft 16,380

Water year 1950-51: Max 126 Min - Mean 18.5 Ac-ft 13,430

Peak discharge (base, 90 cfs). May 12 (9 a.m.) 130 cfs (1.55 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 21 to Apr. 5 (stage-discharge relation affected by ice during 

most of period); discharge estimated on basis of 3 discharge measurements, weather records, and records for nearby stations.
GREEN RIVER BASIN

Price River near Heiner, Utah

Location.--Lat 39°43'05", long. 110°51'55", in SVf£ sec. 1, T. 13 S., R. 9 E., on left 

bank two-thirds of a mile north of Heiner and three-quarters of a mile downstream from 

Willow Creek.

Drainage area. 455 sq mi.

Records available.--June 1934 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,000 ft (from topographic map).

Average discharge. 17 years, 109 cfs.

Extremes.--Maximum discharge during year, 528 cfs Aug. 4 (gage height, 2.85 ft); minimum, 

7.1 cfs Nov. 9, but may have been less during periods of ice effect.

1934-51: Maximum discharge, 9,340 cfs Sept. 13, 1940 (gage height, 7.98 ft), from 

rating curve extended above 900 cfs on basis of slope-area determination of peak flow; 

minimum, less than 1 cfs at times Sept. 1-10, 1934.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

 which are fair. Station is above diversions from main stream for irrigation. Several

small diversions from tributaries above station for irrigation and municipal supply.

Flow affected by Scofield Reservoir (see p. 273).

Rating table, water year 1950-51, except period of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

0.4 

.5

1.0

6.4 

3.1

38

1.4 

1.9 

2.4

178

325

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

74

73

62

55

*54

55

55

55

55

54

54

45

37

28

23

58

62

60

60

63

38

35

34

34

35

35

35

23

21

20

2T

1,413

45.6

2,800

Nov.

21

21

21

20

20

17

14

*12

9.4

8_

9

10

10

11

1

1 n

|

40

49

43

a25

a20

a!7

al6

15

15

14

13

12

14

-

529.4

17.6

1,050

Dee.

16

11

13

*15

13

13

13

15

17

17

17

15

15

14

14

13

13

13

*15

14

14

15

15

14

15

15

15

15

15

13

13

445

14.4

883

Jan.

12

(*)

 10

11

11

12

12

11

12

12

12

12

13

14

14

13

11

356

11.5

706

Feb.

9

10

11

12

14

17

21

1*

' 20

(*)

20

19

16

19

16

16

15

_

-

480

17.1

952

Mar.

15

17

14

18

15

15

27

68

53

32

22

37

*58

70

83

52

23

25

33

63

allO

a90

a50

a25

a35

a50

a35

a40

a30

a30

a45

1,280

41.3

2,540

Apr.

a45

a55

a62

*68

73

83

92

140

150

154

160

167

167

163

163

201

216

216

211

128

142

146

-

3,402

113

6,750

May

128

121

110

108

162

185

224

246

272

243

*246

252

249

246

211

185

178

201

235

246

199

196

190

*192

178

218

238

255

249

238

278_

6,479

209

12,850

June

268

268

272

272

278

'585" 292

281

281

278

272

265

265

*262

' 249

246

265

232

221

232

214

176

174

167

152

150

150

146

150

196

-

6,959

232

13, 800

July

194

238

246

221

265

246

268

234

*285

281

262

262

288

268

288

299 295"

265

262

268

240

201

218

240

238

208

221

218

206

178

ITS

7,581

245

15,040

Aug.

187

187

198

235

aloo

a90

a50

*28

23

62

81

89

87

87

92

132

*185

185

169

174

156

114

165

96

74

89

*90

103

107

108

117

3,660

118

7,260

Sept.

121

117

115

112

100

105

123

121

119

158

178

178

178

18C

174

158

156

136

13C

13C

*12S

13C

128

128

128

128

126

126

108

102

4,022

134

7,98C

Calendar year 1950 : Max 357 Mln 8 Mean 113 Ac-ft 82,050

Water year 1950-51 : Max 299 Mln 8 Mean 100 Ae-ft 72,610

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for other 

Price River stations.

Note. Stage-discharge relation affected by ice Nov. 10-13, 15,17, Dec. 3, 6-8, Jan. 1-16, 20-22, 

26, 27, Jan. 30 to Feb. 7, Feb. 10-21.
GREEN RIVER BASIN 277

Price River near Wellington, Utah

Location.--Lat 39°31', long. 110°41', in NW£ sec. 22, T. 15 S., R. 11 E., on left bank 

0.3 mile upstream from Miller Creek and 4.3 miles southeast of Wellington.

Records available.--October 1949 to September 1951.

Gage. Water-stage recorder. Altitude of gage is about 5,350 ft.

Extremes.--1949-50: Maximum discharge during water year, 1,170 cfs July 8 (gage height, 

5.12 ft, from floodmark), from rating curve extended above 140 cfs on basis of slopearea determinations at gage heights 5.37 and 8.87 ft; minimum, 16 cfs Dec. 3.

1950-51: Maximum discharge during water year, 3,250 cfs Aug. 4 (gage height, 8.87 

ft), from rating curve extended above 140 cfs on basis of slope-area determinations at 

gage heights 5.37 and 8.87 ft; minimum, 11 cfs Jan. 1.

Remarks Records good except those for periods of ice effect or doubtful or no gageheight record, which are fair. Many diversions above station for irrigation. Flow 

affected by storage in Scofield Reservoir (see p. 273).

Rating table, Oct. 1, 1949, to Sept. 30, 1950,, except period of ice effect 

[gage height, in feet, and discharge, in cubic feet per second)

1.1 

1.4

9.9

17.6

34.6

65.0

2.0 

3.0 

5.0

Discharge, in cubic feet pe 

1949-50

158

390

1,110

second, 1949-51

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

> a45

. a6O

a30

1,455

46.9

2,890

Nov.

28

*25

26

25

25

24

24

25

24

25

24

22

22

*23

23

23

22

22

23

22

21

21

21

21

25

23

22

21

22

21

-

696

23.2

1,380

Dec.

23

22

 22 20

21

25

22

22

32

54

25

25

26

*27

28

30

31

32

33

32

30

30

32

34

33

31

30

30

31

32

33

878

28.3

1,740

Jan.

(*)

32

992

32.0

1,970

Feb.

32

(»)

35

40

_

_

-

990

35.4

1,960

Mar.

37

3T

39

42

45

47

*50

54

58

61

58

49

41

44

50

44

45

37

41

41

41

56

46

39

40

41

37

47

51

57

61

1,436

46.3

2,850

Apr.

156" 86

*147

107

118

123

156

210

210

171

166

175

203

249

208

195

214

233

227

218

216

240

268

277

Z53

220

187

179

166

138

-

5,671

189

11,250

May

112

*95

78

84

82

77

84

75

57

56

51

47

42

45

77

123

101

125

144 *TBT

120

112

101

92

75

68

64

68

56

42

3J3

2,529

81.6

5,020

June

37

37

35

38

41

47

*47

65

72

46

41

36

36

36

35

34

3235-

35

35

*79

105

41

41

37

38

36

37

38

40

-

1,312

43.7

2,600

July

41

51

49

53

48

49

85

d250

TTO

d80

d90

*46

35

34

34

29

30

61

94

46

32

29

28

34

36

37

36

100

115

d50

41

1,813

58.5

3,600

Aug.

36

*3I

30

30

30

28

27

24

22

23

25

26

25

25

25

25

26

27

27

28

26

*29

32

30

30

28

26

24

24

22

J21

835

26.9

1,660

Sept.

21

21

21

21

12

20

41

115

T5

38

53

*29

26

26

27

26

26

25

65

47

33

28

26

32

33

28

27

26

26

25

-

996

33.2

1,980

Calendar year 1950: Max - Hin - Mean - Ao-ft -

Water year 1949-50: Max 277 Hin 19 Mean 53.7 Ao-ft 38,900

Peak discharge (base, 500 efs).--July 8 (about 5 p.m.) 1,170 cfs (5.12 ft); July 18 (10 p.m.) 553 

cfs (3.51 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for other 

Price River stations.

d Doubtful gage-height record; discharge computed on basis of recorder graph and records for other 

Price River stations.

Note.--Stage-discharge relation affected by ice Dec. 11 to Mar. 7 (no gage-height record Feb. 8 to 

Mar. 7, discharge computed on basis of 2 discharge measurements, weather records, and records for 

other Price River stations).

256684 O - 53 - 19
GREEN RIVER BASIN

Discharge, in cubic feet ver second, of Price River near Wellington, Utah, 1949-51 Continued

1950-51

Day

1

2

3 

4 

5

6

7

8

9

10

11

12

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

*28

28 

28

28

26

26

26

24

22

21

22

22

21

21

21

21

21

2_0

20

21

21

21

21

22

22

24

24

24

23

724

23.4

1,440

Nov.

23

23

23 

23 

24

24

24

23

22

20

*24

21

b22

24

22

b21

b23

30

48

36

28

26

22

21

21

21

21

21

21

21

-

723

24.1

1,430

Dec.

21

20

19 

*21 

21

20

b!7"21

21

21

21

21

21

21

21

21

21

21

21

21

21

20

19

21

21

20

20

21

22 ^2"

21

640

20.6

1,270

Jan.

20

\ b20 

J (*)

b!7

-.

 b!8

 b!9

b20

b21

b21

b!9

b!7

580

18.7

1,150

Feb.

b!4

b!5

b!5 

b!6 

b!8

b20

b22

> b25

(*)

-

-

"

645

23.0

1,280

Mar.

I'

40

60

100

60

46

36

*50

88

100

91

60

37

40

40

57

149

60

39

43

53

45 -i

1>

J

1,604

51.7

3/180

Apr.

4040"

38 

34 

28

24

22

21

*20

21

24

18

17

17

li

16

18

21

21

28

30

25

22

22

25

26

35

26

28

38

761

25.4

1,510

May

25

21

21 

19 

18

19

21

22

32

34

25

*26

26

69

91

98 "58

42

41

54

46

42

41

*39

38

44

34

29

28

24

25

1,182

38.1

2,340

June

29

31

53 

41 

36

40

41

39

36

40

40

42

44

*44

40

40

39

44

35

35

*266

13?

58

45

35

31

25

21 £2

22

-

1,446

48.2

2,870

July

22

TT5

24 

27 

30

32

39

37

*36

37

36

36

41

42

37

41

~50 118

33

74

76

32

28

28

30

24

38

102

88

52

34

1,349

43.5

2,680

Aug.

*26

29

191 

*790 

3575

200

100

70

29

28

27

25

25

22

21

*21

23

24

26

46

146

70

97

127

37

35

34

26

32

*33

29

2,689

86.7

5,330

Sept.

25

23

30 

23

25

22

20

18

T5

20

21

22

22

21

21

22

24

21

21

20

21

22

22

23

22

22

22

24

25

-

673

22.6

1, 350

Calendar year 1950: Max 277 Mln 17 Mean 51.1 Ac-ft 37,030

Water year 1950-51 : Max 790 Mln - Mean 35.7 Ac-ft 25,830

Peak discharge (base, 500 efs) . June 21 (6 p.m.) 1,280 cfs (5.37 ft)j Aug. 4 (5:30 p.m.) 3,250 cfs 

(8.87 ft); Aug. 21 (11:30 ^.m.) 70 704 cfs " (3.95 .-.._-.ft).

* Discharge measurement.jmade on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 1, Mar. 1-8, Mar. 27 to Apr 

Aug. 5-8, 22; discharge 'estimated on basis of weather records a

June 11-13,. 24, 25, July 7, 8, 

ecords for nearby stations.
GREEN RIVER BASIN 279

Price River at Woodside, Utah

Location. Lat 39°17', long. 110 0 21', in SE^ sec. 9, T. 18 S., R. 14 E., on left bank on 

downstream side of bridge on U. S. Highway 50 at Woodside and 20 miles upstream from 

mouth.

Drainage area.--1,500 sq mi, approximately.

Records available (revised).--September 1909 to December 1910, January to August 1911 

(gage neignrs only), November 1945 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 4,600 ft. September 1909 to August 1911 reference point at site about 100 ft upstream at different datum.

Average discharge.--5 years (1946-51), 82.5 cfs.

Extremes. Maximum discharge during year, 7,720 cfs Aug. 4 (gage height, 7.34 ft); minimum, 11 cfs Nov. 12 (gage height, 0.37 ft).

1909-11, 1945-51: Maximum discharge observed, 8,100 cfs Sept. 1, 1909, by float 

measurement; no flow on several days during July, August, September 1910.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Many diversions above station for irrigation. Plow affected by storage in Scofield Reservoir (see p. 273). Records of chemical analyses and water temperatures for the water year 1951 are given in Water-Supply Paper 1200.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

34

5?

67

67 

63

56

50

50

50

54

48

42

42

38

37

38

37

54

6939"

69

69

46

38

37

35

37

37

43

46

43

1,517

48.9

3,010

Nov.

42

38

38

40 

38

38

37

35

34

29

19 "2*4"

27

38

42

43

74

84

63

108

97

79

82

82

65

54

50

46

46

45

-

1,539

51.3

3,050

Dec.

46

43

43

38 

38

43

32

42

50

50

54

56

54

56

56

56

585"B"

56

54

54

54

54

50

40

1,493

48.2

2,960

Jan.

\ 35

30

 35

30

25

1,040

33.5

2,060

Feb.

20TT2"

25

30

> 35

I

r

50

80

60

1

j

70

85

86

S3

61

54

54

54

_

_

-

1,455

52.0

2,890

Mar.

56

56

58

63 

58

65

67

69

76

108

82

63

52

76

118

134

126

72

46 38"

63

174

94

67

111

115

74

82

61

61

2,533

81.7

5,020

Apr.

106

76

65

56 

52

50

45

37

27

23

32

37

34

24

23

23

22 39"

45

45

61

56

43

37

37

42

103

120

89

82

-

1,531

51.0

3,040

Calendar year 1950: Max 1,020 Min 19 Mean 91.0

May

114

79

46

37 

26

22

TO

34

70

84

76

43

40

69

230

202

157

138

89

97

126

123

117

108

86

72

69

65

56

50

56

2,609

84.2

5,170

June

43

61

69

106 

94

89

94

100

94

92

106

94

97

97

94

92

100

117

132

102

135

338

T3F

129

117

97

67

50

40

~

31

3,012

100

5,970

July

34

35

43

40 

38

38

45

38

37

35

38

40

38

38

42

37

44

108

69

159

234

TTO

69

50

48

52

73

179

160

97

74

2,171

70.0

4,310

Aug.

76

60

761

4,220 

922

a600

a300

126

89

65

52

45

54

58

43

37.

34

35

79

86

105

284

634

a200

alOO

a 70

a60

56

226

152

108

9,748

314

19,330

Sept.

84"S?

63

61 

52

45

38

35

32

31_

32

43

46

61

69

65

56

50

58

56

50

43

48

56

58

56

56

67

74

84

-

1,640

54.7

3,250

Ae-ft 65,850

Water year 1950-51: Max 4,220 Mln 19 Mean, 83.0 Ae-ft 60,060

Peak discharge (base, 1.000 cfs). Aug. 4 (9 p.m.) 7,720 cfs (7.34 ft); Aug. 23 (5:30 p.m.) 3,130 

cfs J3.77 ft).

a No gage-height record; discharge estimated on basis of records for other Price River stations.

Note. Discharge measurements made at weekly Intervals. Stage-discharge relation affected by Ice 

Dec. 25 to Feb. 22.
280 OREEN RIVER BASIN

Oreen River at Oreen River, Utah

Location.--La t 39°00', long. 110°09i, in NWijSWij sec. 15, T. 21 S., R. 16 E., on right

 bank 100 ft upstream from old highway bridge, 1 mile southeast of town of Green River, 

22 miles upstream from San Rafael River, and 117 miles upstream from mouth.

Drainage area.--40,600 sq mi, approximately.

Records available.--October 1894 to October 1899, October 1904 to December 1911, June 1924

 to September 1951. December 1910 to June 1924, published as "at Little Valley, near 

Green River." Records of monthly discharge prior to October 1938 have been republished 

in Water-Supply Paper 918.

gage.--Water-stage recorder. Datum of gage is 4,040.18 ft above mean sea level, datum of

 TT929. Prior to Nov. 6, 1914, staff, wire-weight, or chain gages at several sites within 7 miles of present site at various datums. Nov. 6, 1914, to June 20, 1924, waterstage recorder 7 miles downstream at different datum. June 21 to Sept. 18, 1924, chain 

gage, and Sept. 19, 1924, to May 7, 1947, water-stage recorder, 100 ft downstream at 

same datum.

Average discharge.--52 years (1894-99, 1904-51), 6,733 cfs.

Extremes.--Maximum discharge during year, 30,600 cfs June 2 (gage height, 12.30 ft); minimum, 992 cfs Jan. 7.

1894-99, 1904-51: Maximum discharge, 68,100 cfs June 27, 1917 (gage height, 14.53 

ft, site and datum then in use); minimum, 255 cfs Nov. 26, 1931; minimum gage height, 

4.08 ft Aug. 1, Dec. 5, 1934.

Remarks.--Records excellent except those for periods of ice effect, which are good. Dis-

 charge measurements generally made once a week. Diversions above station for irrigation. 

Records of chemical analyses, water temperatures, and sediment loads for the water year 

1951 are given in Water-Supply Paper 1200.

Revisions (water years). W 918: 1895-1900.

Rating table, water year 195O-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Mar. 20 to Apr. 2O, June 11-23)

5.4 1,170

6.0 2,280

7.0 5,060

8.0 8,660

9.0 13,100

10.0 18,000

11.0 23,200

12.0 28,600

12.3 30,300

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

2.760

2,660

2,610

2,580

2,610

2,610

2,610

2,560

2,560

2,580

2,610

2,580

2,580

2,560

2,540

2,510

2,490

2,460

2,490

2,460

2,420

2,370

2,370

2,370

2,350

2,330

2,330

2.500

2,300

2,330

2,370

77,260

2,492

153,200

Nov.

2.570

2,370

2,400

2,460

2,460

2,510

2,580

2,610

2,560

2,540

2,540

2,540

2,490

2,490

2,510

2,560

2,710

2,580

2,440

2,460

2,860

3,050

3,100

3,210

3,490

5.680

3,650

3,570

3,510

3,460

-

83,760

2,792

166,100

Dec.

5,40O

5,260

3,130

5,050

3,050

3,1OO

2,920

2,680

2,710

2,610

2,580

2,440

2,460

2,610

2,710

2,990

3,320

3,400

3,320

3,160

2,990

2,890

2,760

2,640

2,640

2,640

2,460

2,400

2,300

2,040

1, 500

86,160

2,779

170,900

Jan.

1,480

1,450

1,500

1,480

1,460

1,480

1.290

1,300

1,400

1,500

1,600

1,480

1,400

1,430

1,550

1,700

1,800

1,900

1,850

2,000

2,100

2,370

2,370

2,400

2,400

2,400

2,500

2,580

2,460

2,300

2,200

57,130

1,843

113,300

Feb.

2,110

2,050

2,020

2,000

1,930

1,770

1,830

2,130

2,370

2,640

2,970

2,860

3,130

3,180

3,550

3,430

3,630

3,650

5,850

3,770

3,680

3,740

3,770

3,680

3,650

3,630

3,710

3,790

_

_

-

84,320

3,011

167,200

Mar.

3,680

3,630

3,460

3,180

5,070

2,920

2,860

3,020

3,070

3,210

3,460

3,510

3,600

3,460

3,160

3,100

3,240

3,240

3,240

3,050

2,740

2.560

2,560

2,610

3,070

3,160

3,240

4,020

4,690

4,750

4,560

103,120

3,326

204, 500

Apr.

4,780

5,000

4,870

4,500

4,320

4.2OO

4,260

4,410

4,940

5,810

6,160

6,330

6,400

6,160

5,850

5,610

5,380

5,060

4,900

5,610

6,650

6,870

7,120

7,990

9,070

9,240

8,700

8,660

9,280

9,280

-

187,410

6,247

371,700

May

9,110

8,860

8,820

9,070

9,200

9,030

8,180

7,380

7,160

7,990

9,920

11,400

11,900

11,800

12,500

13,500

13,900

13,800

14,200

15,400

15,700

15,500

16,800

18,800

20,000

20,700

22,000

23,400

25,000

26,500

27.400

444,720

14,350

882,100

June

28,700

30,000

50 , 500

30,200

29,500

27,600

24,600

21,800

19,600

18,200

17,300

16,500

15,800

15,200

14.600

14,600

15, 400

16,900

18,800

20,600

22,500

25,200

26,400

26,500

25,700

24,400

23,100

21,500

19,900

18,600

-

660,000

22,000

tl, 309

July

17,500

16,400

15,300

14,600

14,000

13,500

12,800

12,200

11, 5OO

10,800

10,600

10,500

10,100

9,620

9,200

8,820

8,740

8,780

8,220

7,490

7,420

7,190

7,450

8,140

7,680

7,720

8,540

8,580

8,140

7,600

7.080

316,210

10,200

627,200

Aug.

6,720

7,300

7,830

11,100

10,100

8,580

8,420

8,100

8,060

7,990

7,870

7,380

6,900

6,47O

6,050

5,610

5,220

4,780

4,500

4,260

4,050

4,140

4,290

4,780

4,530

4,470

4,050

3.880

4, 750

4,320

4,410

190,910

6,158

378,700

Sept.

6.120

4,870

4,260

3,910

3,680

3,650

3,820

3,940

5,680

5,400

5,180

3,020

2,890

2,790

2,710

2,640

2,580

2,490

2,420

2,370

2,300

2,260

2,210

2,170

2,100

2,060

2,040

2,020

2,020

1,980

-

89,580

2,986

177,700

Calendar year 195O: Max 29,800 Mln 1, 5OO Mean 7,564 Ac-ft 5,476,000

Water year 195O-51: Max 30,5OO Min 1,290 Mean 6,522 Ac-ft 4,722,000

Peak discharge (base. 17.000 cfs). June 2 (5:30 p.m.) 50,600 cfs (12.5O ft); June 25 (5:15 p.m.) 

26,800 cfs (11.58 ft). 

t Expressed in thousands. 

Note. - -Stage-discharge relation affected by ice Jan. 1-3, Jan. 8 to Feb. 4.
GREEN RIVER BASIN 281

Browns Wash near Green River, Utah

Location. Lat 38°59', long. 110"09' , in SW£ sec. 14, T. 21 S., R. 16 E,, on right bank 

at upstream side of railroad bridge 1 mile upstream from mouth and lj miles east of 

Green River.

Records available. February 1949 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,075 ft (from river-profile map).

Extremes. Maximum discharge during year, 2,120 cfs Aug. 29 (gage height, 4.45 ft); no 

now most of year.

1949-51: Maximum discharge, 2,400 cfs Aug. 9, 1949 (gage height, 4.95 ft) by slope 

area method; no flow most of time.

Remarks. Records fair. No diversions above or below station.

Discharge, In cubic feet per second, water year October 1950 to September 1951

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

0

Dec.

(*)

C)

0

0

0

Jan.

(»)

0

0

0

Feb.

(»)

(*)

-

-

0

0

0

Mar.

(»)

0

0

0

Apr.

(*)

(»)

(»)

-

0

0

0

May

0

0

0

0

0

0

0

0

0

0

0

0

0

4.5

**.3

0

0

0

0

0

.5

.3

*0

0

0

0

0

0

0

0

0

5.6

0.18

11

June

0

0

0*o

0

0

0

0

0

0

0

0

0

0

0

0

4.7

*76

0

0

0

0

0

0

0

0

0

0

0

0

0

5.3

0.18

11

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

1.2

».l

.2

0

0

0

0

0

0

0

0

*0

1.5

0-.05

3.0

Aug.

*32"0

*125

49

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*293

**.!

0

499.1

16.1

990

Sept.

(*)

0

0

0

Calendar year 1950 : Max 13 Mln 0 Mean 0.04 Ac-ft 27

Water year 1950-51 : Max 293 Mln o Mean 1.40 Ac-ft 1,020

Peak discharge (base, 300 efs). Aug. 2 (6 r 

(3.87 ft) and (10:30 p.m.) 1,020 cfs (3.98 ft) 

a.m.) 2,120 cfs (4.45 ft).

* Discharge measurement made on this day.

** Field estimate made on this day.

m.) 701 cfs (3.17 ft); Aug. 3 (5:15 a.m.) 976 cfs 

Aug. 4 (3 p.m.) 378 cfs (3.08 ft); Aug. 29 (11:45
282 GREEN RIVER BASIN

Huntington Creek near Huntington, Utah

Location. Lat 39°22'15", long. 111 0 03'45", in SE£ sec. 6 T. 17 S., R. 8 E., on left bank

 at upstream side of farm road bridge, 1 mile upstream from Fish Creek and,7 miles northwest of Huntington.

Drainage area.--188 sq mi.

Records available.--May 1909 to September 1917, October 1918 to November 1920 (fragmentary), April 1921 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,200 ft (from river-profile map). Prior

 fo Apr. 30, 1913, staff gages at approximately same site but different datum. Apr. 30, 

1913, to Sept. 9, 1917, water-stage recorder 100 ft upstream at different datum.

Average discharge.--36 years (1910-17, 1921-29, 1930-51), 97.6 cfs.

Extremes.--Maximum discharge during year, 800 cfs Aug. 23 (gage height, 3.97 ft); minimum,

 7.7 cfs Mar. 12.

1909-51: Maximum discharge, 2,500 cfs Aug. 2 or 3, 1930 (gage height, 7.5 ft, from 

floodmark), from rating curve extended above 600 cfs; minimum determined, 2 cfs Nov. 5, 

1926.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 whTch are fair. Small diversions above station for irrigation, including transmountain 

diversions to Sevier Lake basin. Flow slightly regulated by small reservoirs above 

station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, discharge, in cubic feet per second) 

(Shifting-control method used Sept. 19-25)

1.4 

1.6 

1.9

2.3 

2.9 

3.5

158

340

596

Discharge, in cubic feet per second, water year October 1950 to September 1951

Bay

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

35

*33

32 

31

31

31

32

35

35

35

35

35

34

35

35

36

35

36

36

36

34

34

36

37

37

36

34

36

34

33

33

1,067

34.4

2,120

Nov.

31

31

31 

30

30

30

29

*28

25

20

23

^

> ?i

f

>

25

25

26

66

55

57

50

30

\ 9Q > 28

J

-

940

31.3

1,860

Dec.

.

> 26

J

(*)

30

918

29.6

1,820

Jan.

(*)

27

837

27.0

1,660

Feb.

25

22

> 24

_

_

-

669

23.9

1,330

Mar.

24

28

31

31

31

31

30

25

25

35

*31

32

31

22

25

35

32

32

32

28

30

31

35

33

29

30

33

33

917

29.6

1,820

Apr.

33

33

36 

42

39

39

43

48

*54

63

52

57

63

80

87

96

102

104

110

116

112

108

125

141

116

110

106

121

130

114

2,480

82.7

4,920

May

106

100

94 

110

123

136

158

181

190

224

*256

260

221

192

176

171

192

224

244

275

322

298

288

340

377

437

511

567

*525

498

454

8,250

266

16,360

June

400

355

350 

295

253

226

224

218

226

275

285

288

282

302

319

333

316

373

326

308

279

238

209

192

179

166

153

*163

171

150

7,814

260

15, 500

July

123

158

201 

195

187

181

176

176

*174

171

171

166

168

184

181

187

190

179

176

179

179

163

163

161

158

156

171

177

161

156

153

5,321

172

10, 550

Aug.

160

144

163 

136

104

68

59

*52

51

46

46

46

44

*43

43

89

96

96

98

98

100

100

123

119

108

102

100

98

100

98

96

2,826

91.2

5,610

Sept.

92

87

89

89

83

a8t

a.B?

a81

*80

74

63

63

63

6?

60

60

59

5<5

*53

55

5S

51

5?

48

47

42

31

31

3?

1,93?

64.4

3, 830

Calendar year 1950 : Max 344 Min 18 Mean 85.7 Ac-ft 62,010

Water year 1950-51 : Max 567 Min - Mean 93.1 Ac-ft 67,380

Peak discharge (base. 400 cfs). May 28 (1:30 a.m.) 646 cfs (3.59 ft); Aug. 3 (10 p.m.) 458 cfs 

(3.22 ft); Aug. 23 (7 p.m.) 800 cfs (3.97 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge interpolated.

Note.. Stage-discharge relation affected by ice Nov. 10-17, Nov. 23 to Mar. 5 (no gage-height recJ Jan. 18-21 and Jan. 26 to Feb. 7; discharge estimated on basis of weather records and records for 

nearby by streams).
GREEN RIVER BASIN 283

Cottonwood Creek near Qrangeville, Utah

Location.--Lat 39°15'55", long. 111°07'40 M , In SWi sec. 10, T. 18 S., R. 7 E., on right 

5anTT"2 miles upstream from Grimes Wash and 5 miles northwest of Orangevllle.

Drainage area.--SOO sq ml, approximately.

Records available. May 1909 to September 1927 (fragmentary), May 1932 to September 1951.

Gage.--Water-stage recorder. Altitude of gage Is about 6,050 ft (from topographic map). 

Prior to July 16, 1921, staff gages at several sites in the immediate vicinity of the 

present gage at different datums. Aug. 11, 1921, to May 29, 1934, water-stage recorder at site 250 ft upstream at different datum.

Average discharge.--35 years (1910-20, 1921-27, 1932-51), 102 cfs.

Extremes. Maximum discharge during year, 1,420 cfs Aug. 23 (gage height, 5.77 ft); minimum recorded, 10 cfs Mar. 12, but may have been less during periods of ice effect.

1909-27, 1932-51: Maximum discharge, 2,870 cfs Aug. 9, 1941 (gage height, 6.38 ft), 

from rating curve extended above 780 cfs; minimum observed, 4 cfs Jan. 24, 1933 (discharge measurement).

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wKTch are fair. Small diversions above station for irrigation. Ephraim and Spring 

City tunnels constructed by the Bureau of Reclamation in 1936 and 1938, respectively, 

and several small canals divert from headwaters of Cottonwood Creek to Great Basin for 

irrigation in San Pitch River basin.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*24

26

27

VS

25

25

25

25

25

25

25

25

25

24

24

24

24

24

23

24

24

24

26

23

23 

22

2Z

23

23

23

753

24.3

1,490

Nov.

23

23

23

23

23

23

22

*22

20

15

20

22

22

£6

23

23

24

24

53

35

36

35

28

25

26

24 

22

21

21

21

-

745

24.8

1,480

Dec.

21

20

21

22

)-

23

23

23

23

23

23

23

24

720

23.2'

1,430

Jan.

(*)

23

713

23.0

1,410

Feb.

22

(*)

20

"

-

_

-

591

21.1

1,170

Map.

} -

20

21

25

2B

26

22

19

21

27

*28

30

25

19?y

22

23

29

2B

22

25

28

28 

25

21

23

24

24

740

23.9

1,470

Apr.

25

26

28

27

25

24

25

27

*28

29

24

26

28

34

34

37

43

45

44

44

45

42

44

504"5

42 

42

42

48

42

-

1,065

35.5

2,110

May

38

37

36

TT

43

53

57

62

70

86

108

126

117

110

*117

110

100

119

133

169

232

*226

245

269

336

480 

832

783

*844

S3?

756

7,567

244

15,010

June

'5n> 617

433

373

360

340

356

364

360

320

320

332

336

368

398

424

424

411

373

352

332

298

280

255

238

226 

213

*2Cr4

192

180

-

10,195

340

20,220

July

166

T57

143

136

128

126

117

115

108

102

*102

98

92

96

94

92

98

*88

85

90

86

79

81

76

72

72

81

*111

98

72

74

3,131

101

6,210

Aug.

74

68

144

184

a!30"

alOO

a7O

a60

a52

a50

a 48

a47

a46

a45

a 43

*42

41

IT

43

47

47

47

*137

53

45

44 

43

42

44

44

41

1,962

63.3

3,890

Sept.

40

3S

37

36

35

34

34

35

34

33

32

32

32

32

32

32

31

31

30

*30

30

30

31

30

30

29 

29

29

29

28

-

965

32.2

1,910

Calendar year 1950: Max 550 Mln - Mean 70.1 Ac-ft 50,710

Water year 1950-51: Max 844 Mln - Mean 79.9 Ac-ft 57,800

Peak discharge (base. 900 cfs).- May 30 (9 p 

(5.14 ft); AugT Z3 (3:30 p.m.) 1,420 cfs (5.77

7s].- Hay 50 (9 p.m.) 997 cfs (4.59 ft); Aug. 5 (12 p.m.) 1,020 cfs

Discharge measure

.m.) 

ft).

" uiscnarge measurement made on -cms aay.

a No gage-height record; discharge estimated on basis of records for nearby stations.

Note.--Stage-discharge relation affected by ice Nov. 10-16, Dec. 3-9, 11, 12, Dec. 17 to Mar. 4.
284 GREEN RIVER BASIN

Cottonwood Creek near Castle Dale, Utah

Location. Lat 39°10', long. 110°56", in sec. 8, T.,19 S., R. 9 E., on right bank half a 

le upstream from Rock Canyon and 6 miles east of Castle Dale.

ge area. 261 sq mi.

Records available. July 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 5,500 ft.

Extremes.--Maximum discharge during year, 872 ofs Aug. 4 (gage height, 5.19 ft); minimum, 

TTV" cfs Apr. 14.

1947-51: Maximum discharge, 1,150 ofs (revised) Aug. 22, 1947 (gage height, 6.14 

ft), from rating curve extended above 820 cfs by logarithmic plotting; minimum, 1.0 ofs 

Sept. 18, 19, 21, 1948, Sept. 18, 1950.

Revisions. The figures of maximum discharge for some water years have been revised 

as shown in the following table. They supersede those published in the water-supply 

papers indicated.

Water-Supply 

Paper

1119. .......

1119........

1149........

1179. .......

Water 

year

1947-48

1948-49

1949-50

Date

Aug 22

May 18

June 1

Gage height 

(feet)

6.14

3.65

4.58

3.40

Discharge 

(cfs)

1,150

468

704

409

t Period July to September 1947.

Remarks. Records good except those for periods of ice effect or doubtful or no gageheight record, which are fair. Many diversions above station for irrigation. Ephraim 

and Spring City tunnels constructed by Bureau of Reclamation in 1936 and 1938, respectively, and several small canals divert from headwaters of Cottonwood Creek to Great 

Basin for irrigation in San Pitch River basin.

Rating table, water year 195O-51, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

0.5 

.6

1.0 

1.3

2.0

3.5

8.0

15

37

1.8 

2.5 

3.0 

4.0 

5.0

93

212

318

554

819

Discharge, in cubic feet per second, water year October 195O to September 1951

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.

6.8

7.5

*8.9

9.2

9.2

7.5

6.0

S75

9.6

8.6

8.6

8.3

7.2

7.8

8.0

7.5

7.5

8.6

9.9

9.9

9.9

10

10

11

IT

11

10

10

11

11

10

278.3

8.98

552

Nov.

10

10

10

11

11

11

11

11

*10

b9

11

11

12

10

10

10

11

12

19T6~

14

16

15

12

12

12

12

11

11

12

-

353

11.8

700

Dec.

12

(*)

blO

312

10.1

619

Jan.

(*)

b9

279

9.0

553

Feb.

b9

1 (*)

y b!5

J

blO

, b8

_

_

-

262

9.36

520

Mar.

b8

8.9

8.9

8.9

9.2

8.9

7.2

6.8

6.8

6.8

6.8

*6.2

5.3

B75

6.2

6.8

6.0

6.0

5.8

5.8

6.2

6.8

6.2

5.5

6.2

7.8

11

222.8

7.19

442

Apr.

12 ~9.6

8.6

8.3

8.6

6.5

5.3

4.9

5.1

*5.3

4.5

4.3

3.0

2.4

374

3.4

4.7

6.0

6.2

6.5

5.3

4.1

3.7

3.4

5.8

7.2

7.8

6.2

6.2

6.2

-

174.5

5.82

346

May

5.3

5.5

4.7

5.3

5.3

5.1

5.3

5.5

5.0

8.0

*9.6

12

13

26

28

17

13

15

22

62

69

73

80

151

298

539

620

6754"

584

*559

3,851

124

7,640

June

468 375"

296

245

190

173

162

16O

162

166

164

164

164

164

173

186

204

228

232

222

212

198

179

155

135

*100

81

70

56

45

5,526

184

10,960

July

30

75

16

13

15

12

13

12

19

17

*17

15

14

12

15

15

17

15

13

23

20

13

14

14

12

*12

13

13

31

17

9.9

499.9

16.1

992

Aug.

10

16

174

*333

T21?

100

70

40

25

20

17

15

14

*13

12

11

11

11

10

10

46

20

25

40

25

18

14

13

12

*12

12

1,271

41.0

2,520

Sept.

12-5.9

9.9

9.6

9.6

8.9

8.3

6.0

6.2

6.5

7.0

6.8

7.2

6.8

7.0

7.5

7.0

6.5

5.5

6.0

6.0

6.8

7.0

5.5

7.2

6.f

5.3

or

9.7

7.2

221.4

7.38

439

Calendar year 195O: Max 347 Min 1.5 Mean 24.9 Ac-ft 18,05O

Water year 195O-51: Max 620 Min 2.4 Mean 36.3 Ac-ft 26,28O

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Doubtful gage-height record June 1-26 ; discharge computed on the basis of recorded pen trace 

and records for nearby stations. No gage-height record Aug. 5-2O, 22-3O; discharge estimated on 

basis of records for nearby stations.
GREEN RIVER BASIN 285

Perron Creek (upper station) near Perron, Utah

Location. --Lat 39°05'55", long. 111°11'05", In NW£ sec. 7, T. 20 S., R. 7 E. Salt Lake me-

 riaian, on right bank 300 ft upstream from Upper South and Upper North Canal diversions 

and 3 miles west of Perron.

Drainage area.--157 sq mi.

Records available .--May 1911 to September 1923, December 1947 to Septemoer 1951. Records

 ror station at site half a mile downstream published as Perron Creek near Perron April 

1909 to October 1911, not equivalent because of diversions just below present site.

Gage. --Water-stage recorder. Altitude of gage is 6,090 ft (from topographic map). May 6,

 1911, to Sept. 30, 1923, staff gages at site l| miles upstream at different daturas 

(drainage area, 140 sq mi).

Average discharge . --16 years (1911-23, 1947-51), 74.6 cfs.

Extremes .--Maximum discharge during year, 1,150 cfs Aug. 3 (gage height, 6.82 ft), from

 rating curve extended above 400 cfs on basis of slope-area determination of peak flow; 

minimum daily, 5 cfs Nov. 10.

1911 r 23, 1947-51: Maximum discharge observed, 2,100 cfs July 25, 1920 (gage height, 

10.00 ft, site and datum then in use), from rating curve extended above 290 cfs by 

logarithmic plotting; minimum observed, 1 cfs Mar. 22, 23, 1912.

Remarks . --Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Flow slightly regulated by small reservoir above station (capacity not 

known). Small diversions above station for irrigation. Greater part of flow diverted 

by Upper North and Upper South Canals 300 ft below station.

Rating tables, water year 1950-51, except periods of lee effect

(gage height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Mar. 21-26, May 1-ZZ)

Oct. 1 to Mar

1.7 

2.0

2.5

27 to Sept. 30

8.9

13.4

21.7

44.7

92.5

3.0 

4.0 

5.0

197

443

693

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

ZO

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

11

10

*11

11

11

10

9.5

13

19

IS

14

13

12

12

11

12

12

11

11

11

12

11

11

11

11

11

11

14

13

13

13

371.5

12.0

737

Nov.

11

15

12

11

11

10

10

9

*6

5

b6

b8 } b9

blO

blO

11

69

34

30

26

19

b!5

b!6

b!5

b!4

b!4

b!3

b!3

-

451

15.0

895

Dec.

b!2

bll

bll

b!2

bio

(*)

b!2

> bll

blO

351

11.3

696

Jan.

*b9

> 9

279

9.0

553

Feb.

1 

1

(*)

11

» 9

-

-

-

266

9.5

528

Mar.

I

I g

[

I

10

I 11

f

]

9

9

10

11 

12

*12

11

9.5

15

12

12

17

21

14

17

23.

23

18

12

12

15

13

397.5

12.8

788

Apr.

13

14

22

27

14

11

TC

22

14

*15

17

23

31 

32

35

42

52

55

5?

48

50

49

53

53

41

33

33

41

48

42

-

1,000

33.3

1,980

May

2929-

29

40

55

65

78

90

97

115

100

89

87 

80

100

*121

109

123

146

163

206

183

202

234

276

391

472

516 4"SS

443

*403

5,537

179

10,980

June

326 '576"

227

234

244

258

266

276

276

263

249

246

246 

274

274

280

306

303

290

298

300

266

244

222

204

190

179

*172

161

150

-

7,500

250

14,880

July

142

148

163

m

148

131

119

113

107

105

*98

100

119

111

104

96

73

58 SB94

80

75

69

70

69

65

*75

86

72

62

65

3,055

98.5

6,060

Aug.

62

67

*174 T53"

55

50

45

42

38

35

33

30

28 

27

*26

37

41

41

42

46

46

46

45

28

22

21 -25

40

43

*42

28

1,428

46.1

2,830

Sept.

24

22

21

20

5S

38

3TT

37

36

35

35

35

33 

33

33

32

32

31

30

30

30

29

29

27

26

25

24

25

27

24

-

897

29.9

1,780

Calendar year 1950: Max 333 Min - Mean, 48.8 Ac-ft 35,270

Water year 1950-51: Max 516 Min 5 Mean 59.0 Ac-ft 42,710

Peak discharge (base, 600 cfs). May 27 (9 p.m.) 708 efs (5.10 ft); Aug. 3 (9 a.m.) 1,150 cfs 

(6.82 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 4-10, Jan. 18 to Mar. 16, May 14, 15, Aug. 6-11 (stage-discharge 

relation affected by ice during most of winter period); discharge estimated on basis of 2 discharge 

measurements, weather records, and records for nearby stations.
iab GREEN RIVER BASIN

Perron Creek near Castle Dale, Utah

Location. Lat 39°06'25", long. 111 0 01'20", in SE£ sec. 4, T. 20 S., R. 8 E. Salt Lake

 meridian, on left bank 6 miles east of Perron and 7 miles south of Castle Dale.

Drainage area. 210 sq mi, approximately.

Records available.--June 1911 to September 1914, December 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 5,550 ft (from topographic map). June

 9", 1911, to Sept. 30, 1914, inclined staff gage at site 1? miles downstream at different datum.

Average discharge.--6 years (1911-14, 1948-51), 36.9 cfs.

Extremes.--Maximum discharge during year, 1,630 cfs Aug. 3 (gage height, 6.52 ft), from

 rating curve extended above 300 cfs on basis of slope-area determinations at gage 

heights 3.90 and 6.52 ft; minimum, 0.4 cfs May 10.

1947-51: Maximum discharge, that of Aug. 3, 1951; minimum daily, 0.1 cfs Aug. 30 

to Sept. 6, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record,

 whTch are fair. Flow slightly regulated by small reservoir in mountains (capacity not 

known). Many diversions above station for irrigation.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

0.5 

3.6

.6 10

0.8 

1.0 

1.2 66

1.5 

2.0 

3.0

120

234

504

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.7

3.4

4.2

*4.2

3.6

3.9

4.7

5.3

5.3

5.0

4.7

5.0

5.0

5.6

5.3

5.0

5.0

5.8

5.8

6.1

6.1

6.8

7.2

7.9

7.9

7.5

7.9

8^3

8.3

-

172.5

5.56

342

Nov.

8.3

7.9

7.9

8.3

8.3

7.9

7.9

7.9

5

4_

*5

6

> *

8

8.7

9.4

14

9.8

10

11

9.8

10

11

11

10

9.8

9.4

9.4

256.7

8.56

509

Dec.

9.8

9.4

8.7

10

12.

7.9

(»)

7

232.8

7.51

462

Jan.

(*)

6

186

6.0

369

Feb.

1 .

1

7 uI

6

_

_

-

181

6.5

359

Mar.

)'

9.1 ~57T

8.3

8.3

7.9

6.8

6.7

8.3

8.0

8.3

*7.5

5.7

5.3

6.4

7.7

6.8

8.3

6.7

6.4

7.2

8.4

7.2

5.2

Z.B

1.2

2.8

205.8

6.64

408

Apr.

2.6

1.6

1.5

4.1

7.5

5.8

5.3

5.3

5.3

3.9

2.8

*2.6

2.8

2.8

2.6

4.3

2.1

9.9

375

3.4

2.5

1.9

1.5

1.6

1.7

2.4

1.9

2.5

3.4

2.8

101.9

3.40

202

May

1.3

1.1

1.1

1.1

1.0

1.1

1.2

2.1

1.6

1.1

.5

3TT

1.9

2.5

*17

13

10

5.7

7.0

9.7

49

156

178

103

166

249

361

399

328

*313

268

2,653.1

85.6

5,260

June

212

138

87

61

47

46

50

56

64

67

54

52

50

73

94

95

137

168

147

169

177

168

124

93

87

74

*65

53

48

ii

2,797

93.2

5,550

July

33

7.9

20

16

16

13

13

9.8

7.2

*6.2

3.2

3.6

3.2

6.1

5.4

5.0

3.6

3.4

2.5

T7T

6.9

3.8

2.8

4.2

3.6

2.5

2.5

*2.9

2.8

2.8

3.0

223.0

7.19

442

Aug.

3.0

4.9

*278

219

41

31

a24

a!9

a!5

a!4

a!2

alO

a9

a8.5

a8

*7.2

7.9

7.5

7.2

8.3

18

12

11

9.6

8.7

7.9

7.5

12

30

23

*13

887.2

28.6

1,760

Sept.

9.8

9.8

10

9.8

10

10

9.4

9.1

7.4

6.1

6.1

6.8

7.5

7.5

6.4

5.3

5.8

6.1

5.8

5.6

5.3

5.8

5.8

4.4

4.4

4.2

3.6

5.3

13

T.5

-

213.6

7.12

424

Calendar year 1950: Max 168 Mln 0.1 Mean 14.6 Ac-ft 10,600

Water year 1950-51: Max 399 Mln 0.5 Mean 22.2 Ac-ft 16,090

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby stations.

Note. Stage-discharge relation affected by Ice Nov. 9-16, Dec. 7 to Mar. 5.
GREEN RIVER BASIN 287

San Rafael River near Castle Dale, Utah

Location. Lat 39°09', long. 110°54', in NW-j sec. 27, T. 19 S., R. 9 E., on right bank 

half a mile downstream from Perron Creek and 8 miles southeast of Castle Dale,

Drainage area. 927 sq mi,

Records available.--October 1947 to September 1951.

Gage. Water-stage recorder. Altitude of gage is about 5,400 ft.

Extremes.--Maximum discharge during year, 2,020 cfs Aug. 4 (gage height, 5.53 ft), from 

rating curve extended above 1,000 cfs on basis of slope-area determination at gage 

height 5.18 ft; minimum, 13 cfs Nov. 12.

1947-51: Maximum discharge, that of Aug. 4, 1951; minimum recorded, 3.5 cfs Aug. 30, 

1948.

Remarks. Records good except those for period of ice effect, which are fair. Diversions 

above station for Irrigation.

Rating table, water year 1950-51, except period of ioe effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 22 to June 8J

1.2 15

1.4 29

1.6 49

1.9 100

2.5 275

5.5 735

4.5 1,340

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

18

17

*18

20

20

18

16

IT

21

21

21

20

18

19

21

21

21

21

23

25

25

25

25

26

26

27

27

27

28

5F

28

688

22.2

1,360

Nov.

27

26

26

28

28

28

28

28

*28

25_

25

26

32

34

34

31

32

35

53

80_

59

56

48

42

42

46

47

46

46

47

1,133

37.8

2,250

Dec.

48

42

38

45

50

41

53

53

*65

68_

60

65

62

60

60

60

57

47

40

1,494

48.2

2,960

Jan.

(*)

35

1,085

35.0

2,150

Feb.

30

35

40

50

*65

45

30

_

_

-

1,030

36.8

2,040

Mar.

'

' 38

40

I I?

f

41

34

32

35

36

36

*33

24

23

25

28

27

26

23

23

25

26

26

22

22

21

?5

969

31.3

1,920

Apr.

35

?5

24

25

29

26

22

21

21

*23

19

18 IB18

18

18

22

29

26

26

26

23

21

21

24

26

26

23

25

27

709

23.6

1,410

May

23

21

19

18 IB18

19

20

22

23

27

*32

35

37

86

82

60

44

46

56

122

268

397

258

386

585

1,020

1,140

1,010

966

*960

7,818

252

15,510

June

784

5155"

458

378

310

286

292

326

350

362

346

362

350

378

435

462

500

585

540

490

505

462

412

342

326

*265

229

189

157

138

-

11,604

387

23,020

July

105

90

65

65

66

56

55

52

52

53

*52

45

46

42

45

44

44

44

36

144

80

49

45

41

40

*37

39

39

58

44

34_

1,707

55.1

3,390

Aug.

35

42

738

 1,240 555"

194

124

86

65

60

50

44

37

*34

29

28

30

29

27

3tr

128

70

72

281

70

46

37

41

90

70

55

4,438

143

8,800

Sept.

*47

40

39

38

36

36

34

32

30

28

28

28

28

28

28

27

26

26

25

24

2325"

27

25

26

26

23

24

45

63

-

935

31.2

1,850

Calendar year 1950 : Max 550 Min 10 Mean 69.2 Ac-ft 50,100

Water year 1950-51 : Max 1,240 Min is Mean 92.1 Ac-ft 66,660

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 19 to Mar. 9.
GREEN RIVER BASIN

San Rafael River near Green River, Utah

Location. Lat 38°52 r , long. 110°22' , in SW£ sec. 27, T. 22 S., R. 14 E., on left bank 

15 rt upstream from bridge on State Highway 24, 15 miles southwest of Green River, and 

35 miles upstream from mouth.

Drainage area. 1,690 sq mi, approximately.

Kecoras available.--May 1909 to September 1918, September 1919 to July 1920 (gage heights 

only), uctooer 1945 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 4,100 ft (from topographic map).

 Hay 1909 to September 1918, staff gage and September 1919 to July 1920, tape-weight 

gage at approximately present site at different datums. Nov. 28, 1945, to Aug. 23, 

1947, water-stage recorder 400 ft downstream at different datum, and Sept. 10, 1947, 

to Apr. 16, 1950, 50 ft downstream at present datum.

Average discharge.--15 years (1909-18, 1945-51), 210 cfs.

Extremes. Maximum discharge during year, 3,740 cfs Aug. 4 (gage height, 7.78 ft); mini-

 mum, 2.7 cfs Sept. 7.

1909-20, 1945-51: Maximum discharge, 8,640 cfs Aug. 22, 1947, from rating curve 

extended above 800 cfs by logarithmic plotting; no flow at times.

Revisions.--The maximum discharge for the water year 1950 has been revised to 2,230 

cfs July a, 1950 (gage height, 6.56 ft), superseding figure published in Water-Supply 

Paper 1179.

Remarks. Records fair. Discharge measurements generally made once a week. Small diversions for irrigation above and below station. Records of chemical analyses, water 

temperatures, and sediment loads for the water year 1951 are given in Water-Supply 

Paper 1200.

Revisions.--Revised figures of discharge, in cubic feet per second, for the water year 

iabu are given herewith. They supersede figures published in Water-Supply Paper 1179.

Feb. 27.......... 245

May 23.......... 245

24.......... 315

25.......... 325

26.......... 353

27.......... 357

28.......... 357

29.......... 371

30.......... 382

31.......... 460

June 1.......... 527

July 8.

484

434

353

315

315

315

284

892

758

304

176

127

396

185

102

Month

May. ...................

July. ..................

Water year 1949-50. . .

Cfs -days

27,799.5

Maximum

892

Minimum

29

0

Mean

112

141

139

76.2

Runoff In 

aore-feet

8,680

10,490

8,520

55,150

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

11

11

13

13

13

13

14

14

13

13

16

16

15

15

14

16

16

16

16

17

19

20

22

22

23

25

26

27

26

26

532

17.2

1,060

Nov.

27

27

26

27

26

a26

a21

a21

a 2-2

a26

a26

26

33

34

34

36

40

64

~6T 69

59

53

48

47

50

49

44

-

1,100

36.7

2,180

Dec.

45

49

42

39

37

39

42

35

42

50

. 50

> 45

1,410

45.5

2,800

Jan.

40

1,240

40.0

2,460

Feb.

35

35

36

38

40

44

50

70

50

45

50

55

55

56

55

51

45

52

-

-

-

1,437

51.3

2,850

Mar.

44

52

54

50

50

52

55_

55

52

48

43

40

36

32

33

34

33

33

27

28

27

30

28

26

26

25

24

24

25

24

26

1,136

36.6

2,250

Apr.

26

29

35

32

25

22

24

23

20

17

18

18

18

13

II_

11

11

11

13

15

29

24

24

22

19

19

19

21

21

20

610

20.3

1,210

May

18

18

19

16

15

14

12

9.9

9^

9.5

9.9

9.9

10

21

35

69

69

67

55

52

59

a!30

a220

287

245

378

643

1,130

1,510

1,230

1,190

7,360.2

237

14,600

June

975

736

531

411

339

311

301

291

328

325

332

328

353

346

371

437

445

519

555

476

460

426

393

325

284

266'

225

200

182

165

-

11,637

388

23,080

July

138

108

85

67

52

45

47

36

33

31

30

30

27

26

25

24

26

27

30

a30

alOO

a40

a35

a32

29

26

29

38

54

30

40

1,370

44.2

2,720

Aug.

62

55

287

2 .250

1,130

331

207

154

117

85

72

59

45

37

30

26

23

22.

22

24

22

57

100

102

164

72

52

40

63

186

98

5,994

193

11,890

Sept.

_5§

45

38

33

31

28

23

25

22

21

19

16

15

15

15

14

14

13

12

12

12

11

12.

10

11

13

12

14

16

15

593

19.8

1,180

Calendar year 1950 : Max 1,240 Mln 0 Mean 75.1 Ac-ft 54,370

Water year 1950-51 : Max 2,250 Mln 9.0 Mean 94.3 Ac-ft 68,280

Peak discharge (base, 1,800 cfs).--Aug. 4 (7:50 a.m.) 5,740 ofs (7.78 ft).

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records 

and records for station near Castle Dale, Utah.

Note.--Stage-discharge relation affected by Ice Dec. 11 to Feb. 21.
DIRTY DEVIL RIVER BASIN 289

Fremont River near Fremont, Utah

Location.--Lat 38°29', long. 111°35', in NEi sec. 9, T. 27 S., R. 3 E., on left bank 800 

rt downstream from road bridge, about if miles downstream from East Fork, and 2| miles 

northeast of Fremont.

Drainage area.--205 sq mi.

Records available.--July 1949 to September 1951. March 1939 to September 1942 in files of 

State engineer's office.

Gage.--Water-stage recorder. Altitude of gage is 7,000 ft (from topographic map). Prior 

Tfo July 1949, at same site on opposite bank and at different datum.

Extremes. Maximum discharge during year, 127 cfs May 30 {gage height, 2.04 ft); minimum, 

4.a cfs Mar. 4, but may have been less during periods of ice effect.

1949-51: Maximum discharge, 133 cfs July 30, 1949 (gage height, 2.10 ft); minimum 

recorded, that of Mar. 4, 1951.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

whicn are fair. Several diversions below station for irrigation; none above. Flow 

regulated by Fish Lake and Johnson and Forsythe Reservoirs.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

3.9

6.4

15

1.3 

1.7 

2.0

75

117

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

32

32

32

31

32

31

25

23

22

22

22

22

22

22 

22

22

22

22

23

18

9.6

9.3

973

9.3

9.3

9.3

10

690.1

22.3

1,370

Nov.

10

10

10

10

9.6

9.6

9.6

9.6

9.3

a7.0

a7.6

a8.1

a9.0

no

13

To

10

9.6

9.3

8.9

8.9

8.9

8.9

8.9

8.9

8.9

-

279.6

9.32

555

Dec.

8.9

b8.6

b8.0

973

8.7

b9.0

9.3

8.9

8.9

8.6

8.9

8.9

8.2

8.2

8.2

8.2

*8.2

8.7 

8.9

8.9

8.6

8.6

8.9

9.0

8.8

8.8

b8.6

8.4

8.9

8.6

b8.4

269.1

8.68

534

Jan.

b8.0

b8.0

9. fa

b9.0

b8.6

b8.3

b8,l

bS.O

bS.O

bS.O

8.9

8.6

b8.6

8.6

8.6

8.6

8.2

8.2 

8.2

*b8.0

bS.O

8.6

8.2

8.6

8.2

7.8

8.2

8.2

8.2

8.2

bt^.O

256.3

8.27

508

Feb.

b7.0

bS.O

bS.O

8.9

8.9

8.2

8.6

8.6

8.2

8.6

8.6

8.6

8.2

bS.O

*8.2

V bS.O

\

7.8

8.2

bS.O

bS.O

8.2

8.2

b8.4

_

_

-

229.4

8.19

455

Mar.

b8.6

8.9

8.9

9.0

8.6

8.6

8.6

8.9

9.6

9.3

b9.0

b9.0

10

9.6

9.6

9.6

~»

V b9.0

10

*9.6

9.6

9.9

9.6

10

9.6

10

.

I alO

]

291.1

9.39

577

Apr.

L

S- alO

I

1

all

all

a!2

a!4

a!9

a27

31

32

*32

31 

30

30

29

26

27

28

28

26

26

26

28

42

-

646

21.5

1,280

May

41

40

415

40

45

91

87

87

88

88

87

87

87

88

90

*86

84

84 

84

84

87

86

86

86

88

99

112

117

TTT

noe

110

2,596

83.7

5,150

June

99

"96 104

79

83

101

101

101

101

101

101

101

99

99

87

98

101

83 

*67

87

95

95

94

92

92

92

91

91

91

91

-

2,813

93.8

5,580

July

91

915

90

88

87

87

86

86

84

84

*86

87

87

87

87

87

86

84 

82

82

81

79

78

77

75

77

77

74

73

74

73

2,566

82.8

5,090

Aug.

73

71

74

1Z

68

68

67

65 *65

63

61

59

55

55

53

51

48

44 

44

43

44

42

41

42

42

43

42

42

45

43

41

1,666

53.7

3,300

Sept.

3938"

38

38

*38

37

38

37

36

35

35

35

35

35

35

35

34

34 

33

32

32

31

31

30

30

29

2?

31

32

32

1,024

34.1

2,030

Calendar year 1950: Max 99 Mln 7.0 Mean 38.0 Ac-ft 27,530

Water year 1950-51: Max 117 Mln 6.0 Mean 35.5 Ac-ft 26,430

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for other 

nearby stations.

b Stage-discharge relation affected by ice.
290 DIRTY DEVIL RIVER BASIN

Fremont River near Bicknell, Utah

Location.--Lat 38°18', long. 111°31', in NE£ sec. 7, T. 29 S., R. 4 E., on left bank 600 

Ft upstream from highway bridge, 1,500 ft downstream from Torrey Canal and Mill ditch 

headings, 1 mile downstream from Government Creek, and 3 miles southeast of Bicknell.

Drainage area.--776 sq mi.

Records available.--May 1909 to December 1912 published as "near Thurber"; October 1937 to 

September 1951 [1944-46, fragmentary).

Gage.--Water-stage recorders. Altitude of gage is 6,800 ft (from topographic map). May 

1909 to December 1912, staff gage 500 ft above canal headings at different datum. October 1937 to June 28, 1949, staff gages at present site and datum.

Average discharge.--14 years (1909-12, 1937-43, 1946-51), 93.8 cfs.

Extremes.--Maximum discharge during year, 191 cfs Jan. 6 (gage height, 2.77 ft); minimum 

 cfaTIy, 61 cfs July 6, 8, 11, 12, 14.

1909-12, 1937-51: Maximum discharge, 1,200 cfs about Apr. 5, 1942 (gage height, 5.8

ft, present datum, from floodmarks), from rating curve extended above 700 cfs; minimum

observed, 18 cfs June 2, 4, 13-15, 17, 18, 1912.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Records include flow of Torrey Canal and Mill ditch and represent flow 

of Fremont River above these diversions. Discharge computed by combining flow in canals 

with that in river below canals. Several diversions above station for irrigation. Flor 

affected by Fish Lake and Johnson and Forsythe Reservoirs.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

B

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.

81

79

80

*81

80

80

78

80

80

80

80

80

78

79

81

81

81

78

78

79

80

79

79

80

80

79

77

77

76

Te

79

2,456

79.2

4,870

Nov.

81

81

81

80

80

79

80

79

75

78

76

80

86

94

*105

112

ITT

105

99

96

96

96

94

96

94

97

98

-

2,669

89.0

5,290

Dec.

100

92

97

108

102

95

110

T58

103

100

100

100

98

100

100

98

*98

95

98

95

94

91

92

95

95

94

92

89

34

93

91

3,017

97.3

5,980

Jan.

85

89

94

102

102

97

94

93

90

90

91

94

93

91

96

96

97

99

97

*93

94

102

101

105

107

109

107

110

TOT

bB2

bTO

2,974

95.9

5,900

Feb.

b70

bT4

bB2

b90

114

119

TTT

116

110

112

110

107

97

96

94

91

101

(*)

> 100

_

_

-

2,800

100

5,550

Mar.

> 100

, 90

1 "

J (*)

86

82

83

83

84

80

78T5"

82

83

2,786

89.9

5,530

Apr.

86

83

86

89

101

90

86

83

81

79

79

79

79

78

77

77

*79

77

78

80

79

77

74

T4

76

76

77

77

78

78

-

2,413

80.4

4,790

Calendar year 1950: Max 131 Mln 62 Mean 84.8

May

78

78

77

76

71

70

71

71

71

71

71

70

71

77

98_

*80

76

76

77

77

78

78

77

75

70

70

70

67

5T

*68

69

2,296

74.1

4,550

June

70

72

74

T4

72

70

70

70

71

71

70

69

67

67

65_

66

67

67

*66

67

67

68

68

68

70

70

69

68

68

69

-

2,070

69.0

4,110

July

72

70

69

70

82

61

62

61

62

63

*61

61

62

61

62

68

77

71

69

75

91

95

80

74

72

73

81

96

8?

79

82

2,244

72.4

4,450

Aug.

82

82

89

99

90

86

82

79

*78

78

79

78

7ft

78

77

78

78

80

83

82

83

83

80

77

73

74

75

75

94

106 ~55

2,544

82.1

5,050

Sept.

81

76

74

TT

*76

75

75

79

79

79

80

76

78

80

80

80

81

83

82

79

75

76

78

75

77

76

76

82

8552"

2,352

78.4

4,670

Ac-ft 61,360

Water year 1950-51: Max 119 Mln gl Mean 83.9 Ac-ft 6O.74O

Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 12-17, Feb. 18 to Mar. 21; discharge estimated on basis of 2 discharge measurements, weather records, and records for nearby stations.
DIRTY DEVIL RIVER BASIN 291

Ivie Creek above diversions, near Emery, Utah

Loeatlpn.--Lat 38°45'30", long. 111°25'15", in SW^ sec. 36, T. 23 S., R. 4 E., on right 

bank, 1-jj miles downstream from Clear Creek, and 14 miles southwest of Emery.

Records available.--August 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 7,000 ft (from topographic map).

Extremes. Maximum discharge during period August 1950 to September 1951, 418 cfs July 31 

(gage height, 7.21 ft), from rating curve extended above 12 cfs on basis of slope-area 

determination of peak flow; no flow for part of several days.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

which are poor.

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

Z

3

4

5

6

7

8

Ac -ft

Aug.

_

_

-

_

_

_

_

-

Sept.

7.7

7.7

7.7

7.1

6.5

6.3

3.6

2.5

Day

9

10

11

12

13

14

15

16

Aug.

.

_

-

-

_

_

_

*10

Sept.

2.0

1.7

1.7

1.8

1.8

*1.5

1.4

1.3

Day

17

18

19

20

21

22

23

24

Aug.

11

10

10

9.9

9.6

9.6

9.9

9.2

Sept.

1.5

1.5

1.7

1.7

1.7

1.8

1.8

1.9

Day

25

26

27

28

29

30

31

Aug.

*9.2

9.6

9.6

9.2

9.2

8.5

7.9

-

Sept.

1.9

1.9

*1.9

2.2

1.9

1.9

_

174

Discharge measurement made on this day.

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-fti

Oct.

1.9 

1.9 

1.8

*1 2~.0§"

2.0

2.0

2.2

2.4

2.2

2.2

2.2

2.4

2.4

2.4

2.5

2.5

2.5

2.5 

2.6

2.6

2.6

2.6

2.8

2.8

2.8

2.6

2.8

2.6

2.8

3..0

74.5

2.40

148

Nov.

3.0 

3.0 

3.0

3.0

3.0

2.8

3.0

2.8

1.8

*bl.S

b2.0

b2.2

b2.4

b2.7

b3.0

b3.0

3.0

3.2

9.6 

T7T

3.9

3.1

2.0

1.9

2.5

2.0

2.0

2.5

2.6

3.1

87.7

2.92

174

Dec.

2.4 

2.2

b2.2

*b2.4

2.6

. b2.6

b2.0

b2.0

76.6

2.47

152

Jan.

> b2.0

(*)

 2.0

1.7

1.7

61.4

1.98

122

Feb.

3.0

(*)

 2.5

^

_

-

72.1

2.58

143

Mar.

1"

1-

(*)

. 3.5

101.5

3.27

201

Apr.

3.0 

2.6 

2.7

2.5

2.2

1.4

1.5

1.2

1.0

.7

*2.4

3.0

3.1

3.4

37?

3.1

3.0

2.6

2.5 

2.5

2.0

1.7

1.1

.8

 5

1.5

1.4

.9

.9

.7

-

59.1

1.97

117

May

0.3 

.1 

.1

.1

.1

.1

0

ZJ

1.8

.7

.5

.3

.1

1.3

3.9

*4.1

4.3

4.1

4.0 

8.0

6.0

5.0

3.5

3.0

I , 5

t *2.5

2.8

69.2

2.23

137

June

2.6 

2.1

1.6

1.0

.9

.8

> . 7

1-

r 4.5

5.2

B7T 

4.9

4.7

4.5

4.4

1

I 4.3

J

*4. 3

4.8

4.6

4.3

-

79.5

2.65

158

July

4.3

4.1

4.1

3.9

3.6

3.4

3.4

3.4

3.4

*3.6

3.6

3.6

3.6

3.6

3.9

4.1

4.6

3.9

3.4 

3.9

3.6

1.5

1.1

TTff

1.1

1.1

*1.4

1.6

1.4

1.2

*21

112.2

3.62

223

Aug.

1-

j

13

10

8.0

7.0

6.0

(*)

> 5.0

(*)

224.0

7.23

444

Sept.

4.0 

3.0 

2.7

> 2.5

-

77.2

2.57

153

Calendar year 1950: Max - Mln - Mean, - Ac-ft

Water year 1950-51: Max 21 Min o Mean' 3.00 Ac-ft 2,170

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 10 to Apr. 1, May 19-29, June 2-17, 19-26, Aug. 1 to Sept. 30j 

discharge estimated on basis of 4 discharge measurements, weather records, and records for nearby 

streams.
292 COLORADO RIVER MAIN STEM 

Colorado River at Kite, Utah

Location. Lat 37°SO', long. 110°30', in sec. 35, T. 34 S., R. 13 E., on left bank at

 HTfeT a quarter of a mile upstream from Trachyte Creek, 1 mile downstream from White 

Canyon, 8 miles downstream from Dirty Devil River, and 84 miles upstream from San Juan 

River.

Drainage area. 76,600 sq mi, approximately.

Records available. August 1947 to September 1951

gage.--Water-stage recorder. Altitude of gage is 3,440 ft (from river-profile map).

Extremes. Maximum discharge during year, 56,800 cfs May 31 (gage height, 12.89 ft); mini-

 mum, 2,440 cfs Feb. 3 (gage height, 0.13 ft).

1947-51: Maximum discharge, 88,200 cfs June 21, 1949 (gage height, 15.67 ft); minimum, that of Feb. 3, 1951

Remarks.--Records excellent. Discharge measurements generally made about twice a week.

 Records of chemical analyses, water temperatures, and sediment loads for the water year 

1951 are given in Water-Supply Paper 1200.

Rating table, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used Dec. 2-4, Mar. 3 to Apr. 4, 

May 11 to June 1, June 7-22, Aug. 9 to Sept. 8, Sept. 13-23)

2,400

3,580

19,200

28,700

41,700

59,300

Discharge, in cubic feet per second, water year October 1950 to September 1951

Pay

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

6,250

6,OOO

5,720

5,410

5,260

5,240

5,240

5,170

5,150

5,120

5,010 

5,010

5,000

4,840

4,630

4,810

4,770

4,520

4,500

4,660

4,840

4,710

4,770

4,660

4,600

4,530

4,550 

4,530

4,440

4,500

4,390

152,610

4,920

302,700

Nov.

4.650

4,71O

4,710

4,690

4,710

4,740

4,790

4,820

5,100

5,060

4,930

5,030

5,150

5,340

5,470

5,480

5,400

5,610

5,770

5,850

5,680

6,080

6,310

6,550

6,630

6,900

7.150 

7,040

6,820

6,860

-

167,990

5,600

333,200

Dec.

6,530

5,410

6,350

6,370

6,290

6,150

6,060

5,870

5,870

5,720

5,570 

5,830

6,090

6,080

5,810

5,740

5,750

6,150

6,570

6,920

6,800

6,37O

6,130

6,090

5,940

5,590

5,280 

5,050

5,000

4,810

4,770

183,960

5,930

364,900

Jan.

4,930

4,890

4,520

4,520

4,500

4,600

4,110

3,970

3,870

3,380

2,920 

2,§70

3,570

3,920

4,060

4,020

3,940

3,920

4,160

4,470

4,770

4,960

4,910

4,880

5,120

5,400

5,560 

5,450

5,750

5,880

5,560

139,480

4,500

276,700

Feb.

4,930

3,770

2^580

2,850

3,210

3,990

4,930

5,590

6,530

6,230

5,960 

6,330

6,680

6,740

6,650

6,630

6,530

6,510

6,410

6,860

7,110

7,210

6,980

6,610

6,720

6,880

6,800 

6,800

-

_

-

165,020

5,890

327,300

Mar.

6,880

6,74O

6,410

6,490

6,550

6,110

6,020

5,900

5,480

5,540

5,980 

6,060

6,270

6,490

6,630

6,370

6,060

5,930

5,980

5,920

6,000

5,740

5,470

5,260

5,450

5,660

5,770 

6,060

6,040

6,230

7 , 080

188,560

6,080

374,000

Apr.

7,910

7,750

7,510

7,710

7,730

7,320

6,940

6.920

7,080

7,300

7,270 

7,860

8,160

8,440

8,440

8,210

7,820

7,470

7,250

7,150

7,270

7,820

9,080

9,880

10,800

12,000

13,200 

13,700

13,500

15,900

-

263,390

8,780

522,400

Hay

14,600

14,700

15,200

14,700

14,000

13,500

13,200

15.000

13,200

14,800

16,500 

17,800

20,200

21,800

22,400

22,700

23,000

22,900

22,400

23,500

25,600

28,300

31,300

32,400

34,200

35,800

36,900 

39,200

44,400

51,600

55,700

769,500

24,820

1,526,000

June

55,500

55,10O

54,700

52,200

48,700

45,800

42,100

38,100

34,700

33,400

33,400 

32,800

32,200

30,700

29,000

28,800

29,800

32,100

37,600

43,100

46,300

50,000

53,000

55,200

52,400

47,900

44,900 

43,200

41,100

38,800

-

1,262,400

42,080

2,504,000

July

36,200

33,700

31,800

29,400

27,700

26,900

25,800

24,600

22,900

21,800

21,000 

20,000

19,100

17,900

16,800

16,100

15,600

15,100

14,800

15,000

15,000

14,800

14,800

14,200

15,100

15,600

14,800 

14,200

14,300

13,900

15,500

612,400

19,750

1,215,000

Aug.

12,900

12,800

12,300

19,000

21,300

22,000

18,600

16,200

14,600

13,800

12,800 

12,300

11,900

11,100

10,300

9,380

8,800

8,350

7,980

7,490

7,170

7,110

6.840

7,020

6,980

7,510

7,660 

7,440

7,340

8,120

13,200

350,290

11,300

694,800

Sept.

11,500

9,380

9,540

9,030

7,980

7,270

6,840

6,530

6,290

6,190

5,960 

5,540

5,170

4,890

4,760

4,680

4,500

4,600

4,580

4,470

4,450

4,380

4,400

4,340

4,220

4.210

4,260 

4,270

4,300

4,240

172,770

5,760

342,700

Calendar year 1950: Max 54,500 Min 3,280 Mean 13,210 Ac-ft 9,552,000

Water year 1950-51: Max 55,700 Min 2,580 Mean 12,130 Ac-ft 8,784,000

Peak discharge (base. 40,000 efs).--Hay 31 (3:30 p.m.) 56,£ 

56,200 cfs (12.68 ft).

cfs (12.89 ft); June 24 (12:30 p.m.)
ESCALANTE RIVER BASIN 293

Birch Creek near Escalante, Utah

Location.--Lat 37°46', long. 111°42 I , in HE^ sec. 17, T. 35 S., R. 2 E. , Salt Lake meridlan, on left bank 400 ft south of highway, and 6 miles west of Escalante, Utah.

Records available. July 1950 to September 1951 (discontinued).

uage.--water-stage recorder. Altitude of gage is 6,200 ft (from topographic map).

.Extremes . Maximum discharge during period July 1950 to September 1951, 249 cfs July 31, 

lybi (gage height, 3.20 ft), from rating curve extended above 30 cfs on basis of slopearea determination of peak flow; no flow on many days.

Remarks.--Records poor.

Rating tables, July 17, 1950, to Sept. 30, 1951, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.0

1.1 

1.3

4.2

9.2

25

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

9

10

Ac-ft.

July

_

_

-

_

-

-

_

_

Aug.

1.4

T71

.9

.5

.5

.5

.5

.4

0

S

Sept.

1

)

j

.8

.8

.9

Day

11

12

13

14

15

16

17

18

19

20

July

_

_

_

_

_

~5.9 15

a4

*a3

Aug.

1.1

.7

1.1

.9

.8

.4

.9

1.0

1.0

.7

Sept.

0.7

.7

.7

.4

0

S

.6

.7

.9

*.9

Day

21

22

23

24

25

26

27

28

29

30

31

July

3.5

3.2

3.2

8.2

2.2

1.7

al.6

* 1.6

1.4

1 .4

1.4

_

Aug.

0.8

1.1

1.0

.9

*a.5

> a 5

21.8

43

Sept.

0.9

.9

.9

 9

.9

.9

.8

.9

.9

.9

-

43

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated 

weather records.

basis of 2 discharge measurements and

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.6

.1

.5

.8

.7

.8

.8

.8

.8

.8

.8

.9

.9

.9

1 0

.9

.6

.5

.9

n.o

1.0 1.1 1.1 1.1

1.1 1.1 1.1 1.1 1.1

1.2

27.2

0.88

54

Nov.

1.2 rr?.1.1

.2

.1

.1

.1

.5

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

9.6

0.32

19

Dec.

(*)

0

0

0

Jan.

0

.1

0

0

0

.1

.1

.4

.2

.2

.1

(»)

3.2

0.10

6.3

Feb.

0.1

*0

0

0

0

0

0

0

0

0

0

0

0

0

.6

> b.6

-

-

-

7.5

0.27

15

Mar.

*0.1

.2

00"

0

0

0

0

.1

.1

0

0

0

.1

*.2

.2

0

0

0

.2

.7

.5

.4

.2

.1

.2

.4

.2

.4

.7

.8

5.8

0.19

12

Apr.

0.8

*.9

.8

.8

.8

.9

.8

.8

.8

.8

.7

.9

.8

.2.4"

.9

.9

*.9

1.0

1.1

1.0

.9

.9

.9

1.0

1.2

1.1

1.1

1.4

TT2

-

26.7

0.89

53

May

0.3

.5

.7

.6

.7

.7

.7

.8

.8

.8

.7

.7

.9 n.i

1.4

1.1

.4

.6

.8

.8

1.0

1.0

1.0

1.0

1.0

1.1

1.1

1.1

1.2

1.4

J" 5

27.6

0.89

55

June

1.6

1 .4

3

.5

1.4

1.6

1.6

1.6

1.4

1.1

1.4

1.4

1.4

1.4

*1.2

1.2

1.1

1.1

1.1

.3

.5

1.0

.9

.9

.9

.9

 8

'.G

.3

-

31.7

1.06

63

July

0.2

.2

.1

.1

.2

.2

.1

.1

*0

V

0

.1

.1

,1

.1

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0 *16~

17.6

0.57

35

Aug.

2

*6.1

*13"5.4

.8

.6

.7

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

9

1

0

39.6

1.28

79

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

0

0

0

 \

> . 2

J

-

0.6

0.20

1.2

Calendar year 1950: Max - Mln - Mean - Ac-ft

Water year 1950-51: Max 16 Min 0 Mean 0.54 Ac-ft 392

Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Jan. 11 to Feb. 3, Aug. 1, 29, 30, Sept. 28,30; discharge estimated on 

isis of engineer's and observer's notes, weather records, and records for nearby stations.

256684 O - 53 - 20
294 ESCALANTE RIVER BASIN

Pine Creek near Escalante, Utah

Location.--Lat 37°51'45", long. 111°38'1S", in SWi; sec. 12, T. 34 S., R. 2 E. Salt Lake 

meridian, on left bank about a quarter of a mile upstream from an unnamed right bank 

tributary and 7 miles north of Escalante.

Records available.--July 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,400 ft (from topographic map).

Extremes.--Maximum discharge for period July 1950 to September 1951, 285 cfs Aug. 3, 1951 

(gage height, 4.16 ft), from rating curve extended above 8 cfs on basis of slope-area 

determination of peak flow and logarithmic plotting; no flow for part of Jan. 2.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Rating table, July 27, 1950, to Sept. 30, 1951, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Aug. 5 to Sept. 30, 1951)

0.9

1.0

1.1

1.2 .7

1.3 

1.5 

1.7 

2.0

1.4

3.2

5.8

12

2.2 

2.4 

2.6

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

Ac- ft

July

_

_

-

_

_

_

_

-

Aug.

7.3

7.2

7.2

7.0

7.2

7.0

7.0

6.8

Sept.

5.1

4.8

4.7

4.5

4.4

4.5

4.5

5.1

Day

9

10

11

12

13

14

15

16

July

_

_

_

_

_

_

_

-

Aug.

6.8

6.8

8.7

7.7

7.3

7.2

7.0

7.0

Sept.

4.8

4.7

5.0

4.4

4.0

3.8

3.5

3.3

Day

17

18

19

20

21

22

23

24

July

-

_

-

_

-

-

-

-

Aug.

6.7

6.5

6.5

6.2

6.0

6.7

6.7

6.3

Sept.

3.9

5.3

3.2

3.0

3.0

3.0

*2.9

4.8

Day

25

26

27

28

29

30

31

July

_

_

* .9

.9

.5

.2

.2

-

Aug.

*6.3

5.8

5.8

5.5

5.4

5.4

5.1

206.1

6.65

409

Sept.

4.8

3.0

2.8

2.7

2.6

2.2

-

118.3

3.96

235

Peak discharge (base, 100 cfs).--No peak abov 

Discharge measurement made on this day.

Day

1 

2

3

4

5

G

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

2.4 275" 

2.6

2.7

2.6

2.6

2.6

2.6

2.6

2.5

2.5

2.6

2.6

2.6

2.7

2.7

2.7

2.7

2.7

2.8

2.8

2.8

2.8

2.9 TT9~

2.9

*2.9

2.9

2.9

2.8

2.9

83.9

2.71

166

Nov.

3.0 

3.0 

3.0

3.0

3.0

2.9

2.9

2.9

2.6

.4

.6

.8

1.5

3.2

-

3.0

(*)

3.0

2.7

2.7

2.6

2.5

-

76.3

2.54

151

Dec.

2.0

(*)

62.0

2.0

123

Jan.

1.5

0

46.5

1.5

92

Feb.

} "

2.0

_

_

-

54.5

1.95

108

Mar.

\ ( )

2.5

2.3

2.0

2.2

2.3

*2.3

2.2

\ 2.0

J

2.3

2.3

*2.1

2.1

2.1

2.2

2.1

2.0

2.0

2.2

2.3

68.5

2.21

136

Apr.

2.2 272" 

2.2

2.4

2.3

2.3

2.3

2.3

2.4

2.8

2.7

2.6

2.9

4.5

4.9

5.2

*375-

3.8

3.7

3.5

3.1

2.8

2.7

2.8

2.7

2.9

2.7

2.9

3.6

2.9

-

90.1

3.00

179

May

2.8 

2.6 

2.9

3.5

3.5

4.5

474

3.5

3.0

2.8

2.7

2.9

2.9

*3.1

*4.0

3.3

3.1

3.5

3.7

3.9

4.3

4.5

3.6

3.2

3.0

2.5

2.2

2.0

270

2.0

2.0

97.9

3.16

194

June

2.1 

3.3 

3.7

3.6

3.5

3.2

3.0

3.1

3.3

2.9

2.9

2.8

3.6

4.3

*4.4

4.0

3.8

3.6

3.3

3.2

2.7

2.8

2.9

2.6

2.4

2.2

2.0

1.8

1.5

T75

-

90.0

3.00

179

July

1.3 

172 

.9

.7

.6

.6

.6

.6

*.6

.6

.6

.6

.5

75

.6

.6

.6

.6

.6

1.0

.8

.9

.8

.6

.7

.6

.6

.6

.5

.5

.6

21.1

0.68

42

Calendar year 1950 : Max - Mln - Mean - Ac-f t -

Aug.

0.8 

27T 

*33

*alO

2.0

.4

.1

.5

.5

.5

.4

.3

.2

.2

.2

.2

.3

.3

.4

.5

.5

* .6

.7

.5

.2

.2

.2

.5

.1

.1

2.0

90.5

2.92

180

Sept.

.8 

.6 

.5

; .c-

: .f

* .5

.4

.4

.3

: .3

.3

' £ ~!r

.4

.2

.2

.2

.2

.2

.2

.2

.3

.4

.4

.3

.2

.2

.8

.0

1.7

-

41.8

1.39

83

Water ter year year 1950-51 issu-si: : Max max 33 35 Mln Kin - - Mean Mean 2.26 2.26 Ac-ft Ac-It 1,630 1,630

j:Peak discharge (base, 100 efs).- Aug. 5 (6 a.m.) 285 cfs (4.16 ft) ; Aug. 3 (5 p.m.) 125 cfs (5.41

* Discharge measurement made on this day.

a No gage-height e>«&^-n^.i.£^iu record; -LCUW.LU, discharge u-Lo^iiaig,c estimated cou.Liiia^eu on uubasis u±aof UA discharge u.i.auua-L-ge measurement and engineer's notes. 

Note.--Stage-discharge relation affected by ice Nov. 11-13, 15-19, Nov. 24 to Mar. 14, Mar. 17-20, 

24, 25 (no gage-height record Nov. 26 to Dec. 21; discharge estimated on basis of 1 discharge measurement, weather records, and records for nearby stations).
ESCALANTE RIVER BASIN 295

Escalante River near Escalante, Utah

Location.--La t 37°46', long. 111°34 I , in NE£ sec. 9, T. 35 S., R. 3 E., on left bank 150 

ft below Pine Creek and 2 miles northeast of Escalante.

Drainage area.--315 sq mi.

Records available.--August 1909 to April 1913, October 1942 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 5,700 ft (from topographic map). Prior 

fo Apr. 30, 1913, staff gage at approximately same site but different datum.

Average discharge.--12 years (1909-12, 1942-51), 21.6 cfs (11 years, 23.1 cfs; figure 

published in Water-Supply Paper 1179 in error).

Extremes.--Maximum discharge during year, 1,560 cfs July 31 (gage height, 6.23 ft), from 

rating curve extended above 540 cfs on basis of slope-area determinations at gage 

heights 5.50 and 7.34 ft; minimum not determined, occurred during period of no gageheight record.

1909-13, 1942-51: Maximum discharge, 2,790 cfs Sept. 28, 1949 (gage height, 7.34 

ft), from rating curve extended above 540 cfs as explained above; minimum, 0.1 cfs Aug. 

20, 1946, July 15, 1950.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Many diversions above station for irrigation.

Revisions (water years).--W 1149: 1943(M), 1944, 1945(M).

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 6 to Nov. 9, Nov. 20 to Dec. 2)

1.4 

1.6 

1.8 

2.0

1.0 

5.0

25

2.2 44

2.5 82

3.0 158

3.5 249

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.8

3.8

4.2

4.C

3.2

3.0

3.2

3.4

3.4

3.6

3.4

3.2

3.0

3.2

3.2

3.0

3.2

3.2

3.2

3.2

*3.0

2. .8

278

2.8

2.8

2.8

2.8

3.0

3.4

3.4

3.0

100.0

3.23

198

Nov.

3.0

3.6

3.8

4.4

4.2

3.6

3.6

3.6

3.0

2_,8

3.2

3.4

3.. 8

4.3

4.0

4.0

4.6

5.7

*6.3

6.5

5.3

3.6

3.6

3.4

3.6

3.6

3.8

3.8

3.4

3.6

-

119.1

3.97

236

Dec.

3.0

3.4

 4.5

(*)

136.9

4.42

272

Jan.

, 4.0

p. 6.0

(*)

3.5

3.5

141.0

4.55

280

Feb.

/ 3.5

4.0

4.5

5.0

7.0

8.4

7 .1

6.2

6.2 1"6.2

r3.2

4.2

3.8

3.4

3.0

4.4

4.6

5.0

_

_

-

133.0

4.75

264

Mar.

] (*)

> 5.0

6.2

5.9

5.3

5.3

4.8

4.6

3.9

3.6

3.8

3.8

*4.0

3.6

3.5

3.3

3.1

4.0

4.6

4.4

3.8

3.2

3.2

2.8

2.6

37T

2.9

3.8

3.8

127.5

4.11

253

Apr.

3.6

*3.0

2.8

3.4

3.2

2.8

2.8

2.8

2.8

2.4

2.6

2.6

2.8

2.4

2.0

2.2

2.0

2.2

2.8

3.2

2.4

2.0

*2.0

2.2

2.8

2.6

2.4

2.4

4.6

2.6

-

80.4

2.68

159

May

2.6

2.4

2.4

2.2

2.4

2.4

2.2

*2.2

2.2

2.2

2.2

2.2

2.2

2.6

11

3.3

a3.3

a3.2

3.2

2.0

3.0

3.2

3.4

2.5

2.1

2.8

1.9

1.6

2.2

1.4

1.5

83.8

2.70

166

June

2.2

2.8

2.1

2.4

1.8

1.7

1.6

2.0

2.6

1.5

2.0

2.0

2.2

6.7

*77C

1.8

1.8

1.8

2.0

1.8

1.4

1.8

2.0

1.8

1.6

1.4

1.4

1.6

1.4

1.4

-

60.6

2.02

120

July

1.4

1.2

1.2

1.2

1.4

1.2

1.2

1.2

*1.4

1.2

1.0

1.0

1.0

1.2

1.4

1.8

1.8

1.6

1.6

1.8

15

2.6

1.2

1.2

1.6

1.8

2.5

1.4

1.0

1.4

72.

128.5

4.14

254

Aug.

a 10

*a2o

205

a40

al2

a8

a6

a4

2.6

2.0

1.8

2.0

2.0

1.8

1.8

1.6

*1.6

5.6

7.1

6.4

7.9

5.4

2.4

2.8

2.6

2.4

2.6

3.2

76

a23

4.7

468.3

15.1

929

Sept.

2.4

1.8

1.2

3.0

3.0

*2.2

2.4

2.2

2.2

2.2

2.2

2.0

2.2

2.0

1.8

1.8

1.8

1.6

1.6

1.6

1.6

1.8

1.6

1.8

1.8

1.8

1.8

3.6

7.1

3.0

-

67.1

2.24

155

Calendar year 1950 : Max 46 Min 0.2 Mean 8.40 Ac-ft 6,080

Water year 1950-51; Max 203 Min 1.0 Mean 4.51 Ac-ff 3,260

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement and records for 

station at mouth of Escalante River.

Note..--Stage-discharge relation affected by ice Nov. 10-19, Dec. 3 to Feb. 7, Feb. 14-20, Feb. 28 

to Mar. 4, Mar. 17, 18 (no gage-height record Dec. 20-22, Jan. 8-13, Feb. l).
^96 ESCALANTE RIVER BASIN

East Pork Deer Creek near Boulder, Utah

Location. Lat 38°00'15", long. Ill"23'00", In SW£ sec. 20, T. 32 S., R. 5 E. Salt Lake 

meriaian, on right bank 8 miles north of Boulder.

Records available. July 1950 to September 1951. 

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during period, 7.3 cfs Aug. 4, 1951 (gage height, 1.36 ft); 

minimum, 0.7 cfs Sept. 24, 1951, but may have been less during period of ice effect.

Remarks. Records fair except those for periods of ice effect, which are poor. 

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

9

10

Ae-ft

July

_

-

_

_

-

-

-

-

-

-

Aug.

1.4

1.4

1.4

1.5

1.5

1.5

1.5

1.5

1.5

1.5

Sept.

1.6

1.6

1.6

1.4

1.0

1.2

1.5

1.6

1.5

1.6

Day

11

12

13

14

15

16

17

18

19

20

July

_

-

_

_

_

_

_

_

_

_

Aug.

.6

.5

.5

.5

.5

.5

.4

.5

.5

.5

Sept.

1.5

1.5

1.5

1.4

1.4

1.4

1.4

1.4

1.4

1.6

Day

21

22

23

24

25

26

27

28

29

30

31

July

_

1.5

1.6

1.5

1.6

1.6

*1.6

1.4

1.4

1.4

1.4

Aug.

1.6

1.6

1.6

*1.6

1.7

1.7

1.6

1.6

1.6

1.6

1.6

47 5

94

Sept.

1.6

*1.6

1.6

1.7

1.6

1.6

1.6

1.6

1.6

1.6

-

90

Peak discharge (base, 10 ef s) . No peak: above base. 

* Discharge measurement made on this day.

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.8

T?7

1.7

1.7

1.7

1.8

1.8

1.8

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

1.6

1.6

*1.6

1.6

1.6

1.6

1.7

51.0

1.65

101

Nov.

1.7

1.4

1.2

1.2

1.0

1.0

1.0

1.0

__

(*)

. 1.0

-

31.5

1.05

62

Dec.

_

_

" 1.2

 1.4

(*)

41.4

1.34

82

Jan.

1.6

(*)

.

49.6

1.6

98

Feb.

1.4

(*)

_

_

-

39.2

1.4

78

Mar.

_

_J

> 1.2

, 1.3

1.5

1.6

38.9

1.25

77

Apr.

1.7

1.8

2.1

1.8

1.7

1.8

2.1

2.1

*2.1

2.2

2.3

2.3

2.4

2.5

2.7

2.6

*2.4

2.1

2.1

2.4

2.2

2.2

2.1

1.9

1.8

1.8

1.9

1.8

 2TT 1.5

-

62.5

2.08

124

May

1.9

2.3

^TT

2.1

2.1

1.7

1.6

1.5

1.4

*1.4

1.4

1.3

1.3 i!e

1.7

1.8

2.0

1.8

1.8

1.5

1.5

1.6

1.8

1.5

1.4

1.4

1.4

1.3

1.3

1.3

1.3

50.1

1.62

99

June

1.3

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.2

*1.3

1.3

1.4

1.3

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.1

1.1

1.0

TTO

1.0

1.0

-

36.9

1.23

73

July

1.0

TTo

.9

..9

.9

.9

.9

.8

.9

*.9

.9'.9

.9

.9

.9

.9

.9

.9

.9

1.0

1.0

1.0

.9

.9

.9

.9

.9

.9

1.0

.9

.9

28.4

0.92

56

Aug.

1.0

1.5

1.8

3.1

T72

1.1

1.0

1.0

*1.0

1.0

1.0

1.0

.9

79

.9

.9

1.0

.9

.9

1.0

1.0

.9

1.0

.9

.9

.9

*.9

.9

1.4

1.0

.9

33.8

1.09

67

Sept.

0.9

.9

.9

.9.9-

.9

.9

.9

.9

.9

.9

.9

.8

.7

.7

.8

.7

.8

.8

.8

.8

.8

.7

.7

.7

.7

.7

1.0

TTo

1.0

-

25.0

0.83

50

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 2.7 Mln - Mean 1.34 Ac-ft 967

Peak discharge (base, 10 cfs). No peak: above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 9 to Mar. 31, Apr. 9-13.
ESCALANTE RIVER BASIN 297

Boulder Creek near Boulder, Utah

Location. Lat 37 C 48 1 , long. 111°23 1 , in s| sec. 32, T. 34 S., R. 5 E., on right bank

12 miles northeast of Escalante and 6 miles south of Boulder. 

Records available.--July 1950 to September 1951. 

ijage. --water-stage recorder. 

Extremes.--Maximum discharge during period July 1950 to September 1951, 486 cfs Aug. 3,

labi (gage height, 4.10 ft), from rating curve extended above 55 cfs on basis of si05

area determination of flow at gage height 3.70 ft; minimum, 6.2 cfs June 29, 1951. 

Remarks.--Records good except those for periods of ice effect or no gage-height record,

wnicn are fair.

Rating table, period July 21, 1950, to Sept. 30, 1951, except period of ice 

effect (gage height, in feet, and discharge, in cubic feet per second)

1.1 

L.3 

1.5

.3 1.7 34 2.8 2C

,7 2.1 87

2.5 151

Discharge, in cubic feet per second, 1950-51 

1950

Day

1

2

3

4

5

6

7

8

9

10

Total

Mean.

Ac-ft

July

_

_

_

-

_

_

-

_

_

_

Aug.

8.4

8.0

7.7

8.0

8.4

8.0

7.7

7.7

7.7

7.7

Sept.

7.7

1.1

7.7

7.7

8.0

8.4

8.2

14

13

23

Day

11

12

13

14

15

16

17

18

19

20

July

_

_

_

_

_

_

_

_

_

-

Aug.

9.0

9.0

8.2

8.2

8.0

7.7

7.7

7.4

7.4

7.4

Sept.

10

9.2

9.2

9.0

9.0

8.7

8.7

8.7

9.0

9.0

Day

21

22

23

24

25

26

27

28

29

30

31

July

*9.7

9.7

9.0

8.7

8.2

*8.0

8.2

7.7

8.0

8.2

9.0

_

-

Aug.

7.4

7.7

8.9

*8.7

8.0

8.0

8.0

7.7

7.7

7.7

7.7

246.8

7.96

490

Sept.

9.0

*9.0

9.0

9.4

9.4

9.4

9.2

9.2

9.4

9.2

-

288.1

9.60

571

Peak discharge (base, 300 cfs).--Mo peak s 

* Discharge measurement made on this day.

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.0

9.0

9.0

9.0

9.2

9.4

16

11

9.7

10

*9.7

10

12

12

12

12

12

12

12

12

13

14

326.8

10.5

648

Nov.

14

13

T5

17

18

19

21

21

20

b!3

b!5

bl9

31

31

25

28

30

*34

38

32

27

24

24

24

23

22

22

21

22

22

-

683

22.8

1,350

Dec.

21

b20

32

31

24

b22

36

28

28

36

31

25

24

25

25

25

27

27

28

28

*28

32

32

36

37

38

36

36

43

38

39

938

30.3

1,860

Jan.

32

b3?

b43

45

43

b40

b40

> a40

b40

b40

b43

47

45

*45

44

46

44

42

44

a38

1,273

41.1

2,520

Feb.

a3o

a32

a34

a35

a36

a37

38

39

38

37

36

33

28

23

34

36

38

35

32

32

36

34

29

30

31

32

35

*34

_

_

-

949

33.9

1,880

Mar.

39

35

37

38

36

34

*35

37

29

27

26

29

31

28

28

*28

27

32

36

28

23

24

20

20

20

20

15

14

T6

17

17

849

27.4

1,680

Apr.

15

13

13

15

14

*13

12

12

12

12

11

10

TO

11

11

12

11

11

13

13

12

11

12

12

11

20T2"

10

17

12

373

12.4

740

May

11

11

12

11

12

12

10

T5

*11

11

10

10

10

12

38

14

12

12

12

11

10

37

a20

a!2

a!2

a50

*204

1*31

122

84

25

1,029

33.2

2,040

June

» a9

*8.4

8.4

8.4

8.4

9.0

9.2

8.4

8.2

7.7

8.0

8.2

8.2

7.7

7.2

7.2

7.0

6.8

675

-

251.2

8.37

498

July

7.0

6.8 *77D7.2

7.4

7.4

7.4

7.4

7.7

7.7

7.7

7.7

7.7

7.7

7.7

8.0

8.0

8.0

8.0

S.O

15

TU

8.0

8.0

8.0

8.0

8.0

7.7

8.0

10

8.2

250.4

8.08

497

Aug.

8.4

22

123

124

a20

*9.0

9.0

8.7

8.4

8.4

8.7

9.0

8.7

8.7

8.4

8.4

8.4

8.4

9.0

9.4

13

18

36

a!5

a9

129

22

*12

709.0

22.9

1,410

Sept.

10

9.7

9.0

9.0

*8.7

8.2

8.0

8.2

8.4

8.2

8.2

8.0

57*

9.0

8.7

8.7

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.4

8.2

32

14

11

-

287.6

9.59

570

Calendar year 1950 : Max - Min - Mean - Ac-ft -

Water year 1950-51: Max 204 Min 6.8 Mean'21.7 Ac-ft 15,690

Peak discharge (base, 500 cfs).--May 22 (4:00 p.m.) 320 cfs (gage height, 3.35 ft); May 28 (12:05 

a.m.) 398 cfs fgage height, 3.71 ft); Aug. 3 (9:15 p.m.) 486 cfs (gage height, 4.10 ft); Aug. 23 

(11:50 a.m.) 367 cfs (gage height, 3.55 ft); Aug. 29 (2:50 p.m.) 449 cfs (gage height, 3.90 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 

streams .

b Stage-discharge relation affected by ice .

eather records and records for nearby
298 SAN JOAN RIVER BASIN

San Juan River near Pagosa Springs, Cole

Location. Lat 37°22'05", long. 106°53'40", in SE£ sec. 12, T. 36 N., R. 1 W., on right 

oanK a quarter of a mile upstream from private highway bridge, half a mile upstream 

from West Fork, and 9.5 miles northeast of Pagosa Springs.

Drainage area. 86.9 sq mi.

Records available.--May 1935 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,597.63 ft above mean sea level, datum of 

T929. Prior to Sept. 8, 1938, water-stage recorder at site a quarter of a mile downstream at different datum.

Average discharge. 16 years, 127 cfs.

Extremes.--Maximum discharge during year, 709 cfs May 27 (gage height, 3.05 ft); minimum 

 daily, 6.0 cfs Jan. 30, 31, Feb. 1.

1935-51: Maximum discharge, 2,070 cfs May 12, 1941 (gage height, 4.84 ft), from 

rating curve extended above 1,300 cfs; minimum daily, 5.5 cfs Dec. 20, 1939.

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records good except those for periods of ice effect, which are fair. Diversions 

aoove station for Irrigation of a few hundred acres of hay meadows below station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.8

1.0

1.1 

1.3 34

1.5 

1.7 

2.0 

2.7

98

180

540

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

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.

40

35

*£8

26

25

23

22

£1

20

20

19

19

18

18

18

18

18

17

17

17

16

16

16

15

15

16

15

~tt 14

14

14

604

19.5

1,200

Nov.

*13

T5

1£

12

12

11

11

11

11

7.0

7.5

8.0

9.0

9.5

9.0

8.5

9.0

9.5

10

9.5

9.5

9.5

9.5

9.5

9.5

10

10

10

10

11-

301.0

10.0

597

Dec.

12

IT

10

1£

*11

10

10

12

11

11

11

11

11

11

11

11

11

10

10

10

10

10

9.0

10

9.5

9.0

8.5

7.5

37TT

7.5

7.5

313.5

10.1

6£2

Jan.

7.5 7^5 *7.0

7.0

7.5

7.0

6.5

6.5

6.5

6.5

7.0

7.0

7.0

7.0

7.0

7.0

7.0

6.5

6.5

6.5

7.0

7.5

7.5

7.0

7.0

7.0

7.0

6.5

6.5

 O5 6.0

212.5

6.85

421

Feb.

6.0

TjS

7.0

8.0

8.0

8.0

*9.0

8.0

8.5

9.0

9.5

10

11

12

11

10

11

11

12

1£

14

15

13

12

12

11

11

11

_

-

£85.0

10.2

565

Mar.

*11

10

TZ

13

12

12

12

13

17

18

16

14

13

14

17

18

17

17

18

16

£0

24

£2

25

32

39

52

£7

£2

£2

£1

576

18.6

1,140

Apr.

 £? £0

28

31

*27

£6

27

28

28

30

27

28

32

46

53

59

64

64

60

65

72

83

105

116

TD7T

98

87

9£

90

79

-

1,687

56.2

3,350

May

70

64

*55

87

128

162

176

180

180

176

189

216

194

166

145

138

135

14£

194

255

305

216

220

265

365

392

441

490

?5S

430

*402

7,046

227

13,980

June

375 56"5

355

305

*285

340

360

355

355

340

£60

£40

270

£80

290

305

305

270

245

216

216

194

156

140

128

118

109

102

96

90

-

7,465

249

14,810

July

83

77

74

67

64

59

56

52

47

42

46

*39

42

43

40

38

35

38

40

37

32

32

30

38

32

29

^

32

32

31

46

1,385

44.7

£,750

Aug.

39

39

48

67

46

43

33

*29

26

25

23

21

19

18

17

16

TS

17

16

19

27

42

30

60

53

33

£9

*30

65

"TO 130

1,136

36.6

2,250

Sept.

4<5

57

3?

28

26

24

23

23

2£

20

19

17

18

17

17

16

15

15

15

14

14

15

14

14

14

13

13

13

14

16

584

19.5

1,160

Calendar year 1950: Max 414 Mln 7.0 Mean 79.7 Ac-ft 57,670

Water year 1950-51: Max 490 Mln 6.0 Mean 59.2 Ac-ft 42,840

Peak discharge (base, 600 cfs). May 27 (10 p.m.) 709 cfs (3.05 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 10 to Feb. 18, Feb. 28 to Mar.
SAN JUAN RIVER BASIN 299

West Fork San Juan River above Borns Lake, near Pagosa Springs, Colo.

Location. Lat 37°29'00", long. 106°55'45", in sec. 36, T. 38 N. , R. 1 W., on right bank 

nair a mile downstream from Beaver Creek, 1-J miles upstream from Borns Lake, and 16 

miles northeast of Pagosa Springs.

Drainage area. 41.2 sq mi.

Records available.--April 1937 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 8,400 ft (from topographic map).

Average discharge. 14 years, 83.4 cfs.

Extremes.--Maximum discharge during year, 60S cfs May 27 (gage height, 3.80 ft); minimum 

 daily, 6.0 cfs Jan. 30, 31, Feb. 1.

1937-51: Maximum discharge, 1,290 cfs June 18, 1949 (gage height, 5.24 ft), from 

rating curve extended above 750 cfs; minimum daily, that of Jan. 30, 31, Feb. 1, 1951.

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnicn are poor. No diversion above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Apr. 6 to May 27)

Oct. 1 to July 25 July 26 to Sept. 30

1.2 8.0

1.4 14

1.5 19

1.7 31

2.0 64

2.5 138

3.0 250

3.6 470

1.5 

1.8 

2.0

14

116

200

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

89

B?

*41

36

32

29

27

25

24

22

22

20

20

19

18

19

18

18

16

16

16

15

15

14

IS

16

15

15

14

15

15

736

23.7

1,460

Nov.

*16

16

13

15

14

14

15

14

13

b8.0

blO

12

12

13

13

14

14

14

14

15

16

17

IS

16

16

16

16

16

16

16

430.0

14.3

853

Dec.

16

15

b!6

16

*15

b!5

16

14

14

14

14

15

15

15

14

14

14

b!4

14

14

b!4

14

14

13

14

14

b!3

b!2

T?

12

12

438

14.1

869

Jan.

12

13

*T?

12

13

12

11

11

11

11

10

10

10

10

10

10

10

9.0

8.0

8.0

8.0

9.0

10

9.0

9.0

8.0

8.0

7.0

7.0

6.0

tt

300.0

9.68

595

Feb.

T7o- 6.0

8.0

8.0

8.0

9.0

*9.0

9.0

9.0

9.0

10

11

12

11

10

9.0

10

11

12

11

12

13

TT

12

12

12

11

10

_

_

-

284.0

10.1

563

Mar.

*9.0

STTJ

9.0

10

11

11

12

13

14

15

14

13

13

14

15

16

15

14

14

15

16

17

17

18

20

23

7T

19

18

17

16

458.0

14.8

908

Apr.

15

TT

21

22

*22

18

19

20

20

22

20

20

25

40

51

54

51

42

40

44

52

63

86

W

71

71

62

67

59

45

-

1,243

41.4

2,470

May

40

35

*3?

64

102

132

148

150

160

162

176

189

162

133

119

111

109

122

171

236

250

219

226

2 '35

370

454

466

4TO

310

270

*240

3,040

195

11,980

June

220 '500"

195

190

*180

200

210

205

205

200

185

180

180

180

180

185

185

175

160

145

130

120

105

95

90

80

70

. 65

60

57

-

4,632

154

9,190

July

53SO"

45

43

40

37

35

33

*30

28

26

25

27

25

26

25

25

25

23

22

22

22

21

*24

20

*18

12

17

19

22

24

869

28.0

1,720

Aug.

20

21

23

96

64

71

40

30

25

23

22

21

19

18

Iff

18

18

18

18

20

19

*26

25

112

75

43

38

*55

156

195

TT¥

1,461

47.1

2,900

Sept.

82

M

52

42

37

32

29

31

27

23

22

21

20

19

19

18

18

18

18

17

18

17

17

16

TS

16

16

16

18

18

-

777

25.9

1,540

Calendar year 1950: Max 398 Mln 8.0 Mean 64.1 Ac-ft 46,400

Water year 1950-51: Max 466 Min 6.0 Mean 48.4 Ac-ft 35,050

Peak discharge (base, 500 cfs).--May 27 (6 p.m.) 605 cfs (3.80 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 30 to Apr. 5 (stage-discharge relation affected by ice during 

most of period), May 28 to June 30, July 24, 25; discharge estimated on basis of 4 discharge measurements at station, 3 discharge measurements made 3 miles downstream, weather records, and records for 

nearby stations.
300 SAN JUAN RIVER BASIH

West Pork San Juan River near Pagosa Springs, Colo.

Location.--Lat 37°22'30", long. 106°53'45", in HBi~ sec. 12, T. 36 N., R. 1 W. , on right 

ban>T~30 ft downstream from abandoned highway bridge, a quarter of a mile downstream 

from bridge on D. S. Highway 160, 0.6 mile upstream from mouth, and 10 miles northeast 

of Pagosa Springs.

Drainage area.--87.9 sq mi.

Records available.--April 1935 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,605.57 ft above mean sea level, datum of 

T929. Prior to Sept. 9, 1938, water-stage recorder at site 30 ft upstream at same datum.

Average discharge.--16 years, 164 cfs.

Extremes.--Maximum discharge during year, 1,020 cfs May 27 (gage height, 4.05 ft); minimum 

daily, 8.2 cfs Nov. 10.

1935-51: Maximum discharge, 2,300 cfs June 23, 1941, from rating curve extended 

above 1,300 cfs; maximum gage height, 6.45 ft June 18, 1949; minimum daily discharge, 

that of Hov. 10, 1950.

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wRToh are fair. Diversions for irrigation of about 800 acres above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. I to Apr. 3,

Aug. 30 to Sept. 30

5.0 1.4

9.0 1.7

14 2.1

1.2

1.5

2.0

Apr. 4 to Aug. 29

28 2.5

74 3.0

152 3.6

220

400

600

840

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

90

74

*60

52

49

45

43

42

40

40

38

36

35

35

34

36

35

34

30

30

29

28

26

26

26

26

24

23

22

22

22

1,152

37.2

3,280

Nov.

*21

20

18

18

18

18

18

18

14

6.2

9.0

blO

b!2

b!4

12

b!3

b!6

16

19

20

22

23

23

23

23

23

24

24

24

24

547.2

18.2

1,090

Dec.

24

24

25

25

*24

24

24

24

23

23

23

23

24

24

23

23

23

23

23

24

23

24

24

24

24

24

23

23

24-

23

23

732

23.6

1,450

Jan.

25

28

*27

27

28

26

25

24

23

22

23

21

19

18

17

18

17

16

15

14

15

16

17

16

15

14

13

12

11

10

Iff

582

18.8

1,150

Feb.

10

11

12

13

13

13

*13

13

14

15

16

20

21

20

18

17

18

19

20

19

20

21

22

2T

21

21

20

20

-

_

-

481

17.2

954

Mar.

»19

19

19

20

22

22

23

24

25

30

28

27

27

28

30

32

31

29

28

32

33

33

33

37

46

50

43

37

34

32

31

924

29.8

1,830

Apr.

30

35

42

44

*41

38

38

39

41

41

37

37

45

64

70

75

78

75

75

80

90

100

120

130

T5T3

110

100

96

93

90

2,074

69.1

4,110

May

86

85

*TOo~

122

166

203

230

234

227

210

227

241

269

244

227

203

200

203

266

332

356

322

346

392

516

684

804

836

764

684

*568

10,347

334

20,520

June

476

40T)

400

376

*353

408

428

408-

396

368

342

314

297

290

283

297

308

283

269

269

258

234

196

176

162

152

128

104

96

89

-

8,560

285

16,980

July

83

72

63

61

60

58

56

56

*52

48

47

48

48

44

44

44

41

44

42

41

39

36

36

36

35

36

36

34

34

36

44

1,454

46.9

2,880

Aug.

41

39

39

96

96

87

64

*60

58

55

53

50

47

45

44

42

42

42

39

44

44

*50

52

96

101

61

60

*71

114

204

TOTT

2,042

65.9

4,050

Sept.

78SBsi

45

42

40

42

42

38

36

36

36

35

32

32

30

29

29

26

26

26

24

23

23

2_i

22

22

22

28

29

-

1,024

34.1

2,030

Calendar year 1950: Max 660 Min 8.2 Mean 112 Ac-ft 81,310

Water year 1950-5,: Max 836 Min 8.2 Mean 82.0 Ac-ft 59,320

Peak discharge (base, 900 cfs).--May 27 (9 p.m.) 1,020 cfs (4.05 ft). 

* Discharge measurement made on this dav.
SAN JUAN RIVER BASIN 301

San Juan River at Pagosa Springs, Colo.

Location. Lat 37°15'50", long. 107°00'40", in Sj sec. 13, T. 35 N., R. 2 W., on right bank 

under lower bridge, 200 ft from D. S. Highway 160 at town of Pagosa Springs.

Drainage area. 298 sq mi.

Records available. January 1911 to November 1914, May 1935 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,052.04 ft above mean sea level, datum of 

1929. Jan. 29 to Mar. 6, 1911, staff gage half a mile upstream at different datum. 

Mar. 7 to Oct. 4, 1911, and Nov. 23, 1911, to Nov. 14, 1914, staff gages at present site 

at different datums.

Average discharge.--16 years (1935-51), 382 cfs.

Extremes.--Maximum discharge during year, 2,260 cfs May 28 (gage height, 6.15 ft); minimum 

 daily, 13 cfs Nov. 11.

1911-14, 1935-51: Maximum discharge, 5,790 cfs May 13, 1941, from rating curve extended above 4,500 cfs; maximum gage height, 7.97 ft June 19, 1949; minimum daily discharge, that of Nov. 11, 1950.

Maximum stage known, 17.8 ft Oct. 5, 1911 (discharge, about 25,000 cfs).

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Diversions for irrigation of several thousand acres above station.

Rating tables, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

2.4

2.5 

2.7

Oct. 1 to May 27

3.0 89

3.5 190

4.0 375

May 28 to Sept. 30

4.5 640

5.0 1,000

5.9 1,930

3.5

105 

21O

4.0 400

4.5 680

5.0 1,070

5.9 1,990

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

110 

131 *TCs

98

59

80

79

75

72

69

58

55

53

52

50

50

46

45

43

42

42

40

4O

a40

a40

a39

a38

as 8

as 8

as 7

a5_6

1,833

59.1

3,64O

Nov.

*35 

35

32

29

30

30

30

30

30

20

1318-

25

36

34

26

34

36

49

45

43

46

41

41

43

46

45

43

45

43

-

1,053

35.1

2,09O

Dec.

53 

46

24

52

37

20

*42

53

46

40

45

49

41

45

45

42

36

36

41

41

38

37

34

42

40

38

34

25

37

30

34

1,223

39.5

2,430

Jan.

38 

37

*32

40

48

40

30

32

35

32

35

37

38

34

31

36

37

37

37

32

32

32

35

32

31

30

31

35

32

24

2T

1,058

34.1

2,100

Feb.

30" 23 

37

41

37

*37

36

37

38

40

48

58

45

34

36

38

42

42

43

37

38

42

45

41

42

41

41

35

_

-

1,108

39.6

2,200

Mar.

*34 

42

34

37

43

42

42

46

55

82

77

62

67

79

87

89

75

61

58

67

77

87

79

87

106

124

111

101

82

84

80

2,197

70.9

4,360

Apr.

77 

75

99

117

*106

103

98

104

106

117

99

101

113

150

179

196

214

2 O2

190

208

217

241.

323

384

319

323

267

299

291

252

-

5,570

186

11,050

May

214 

*193

193

267

393

532

604

646

640

640

658

728

694

568

515

445

420

411

544

791

1,010

826

833

928

1,180

,620

,870

,970

1,810

,640

* ,450

25,233

814

50,050

June

1,140 

 924

9OO

*813

750

813

876

916

892

884

778

694

680

694

674

708

778

743

674

644

608

518

435

380

340

3O8

27.2

234

210

190

-

19,470

649

38,620

July

T65- 177 

145

141

135

125

121

119

109

96

91

*82

74

74

69

73

66

73

71

69

60

58

54

60

50

48

48

48

50

49

*81

2,681

86.5

5,320

Aug.

71

69

69

155

157

133

105

84

74

68

60

55

50

44

42

36

35

39

38

*42

48

79

69

115

195

107

89

*91

*129

524

213

3,088

99.6

6,120

Sept.

161 133-

115

101

92

85

79

77

77

66

60

55

54

50

48

42

*39

36

35

27_

33

38

34

34

33

33

32

32

36

44

-

1,781

59.4

3,530

Calendar year 1950: Max 1,440 Mln 13 Mean 248 Ae-ft 179,300*

Water year 195O-51: Max 1,970 Mln 13 Mean 182 Ac-ft 131,500

Peak discharge (base, 1,510 efs).--Hay 28 (1 a.m.) 2,260 cfs (6.15 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage and records fo 

earby stations.
302 SAN JUAN RIVER BASIN

Rio Blanco near Pagosa Springs, Colo.

Location. --La t 37°12i45", long. 106°47'40", in center of sec. 1, T. 34 N. , R. 1 E., on

left bank 5 ft downstream from county highway bridge, 0.4 mile upstream from Leche Creek 

(revised), l| miles downstream from Fish Creek, and 12.5 miles southeast of Pagosa 

Springs.

Drainage area.- -58.0 sq mi.

Records available. --May 1935 to September 1951.

Gage . --Water-stage recorder. Altitude of gage is 7,950 ft (from topographic map).

Average discharge. --16 years, 87.8-cfs.

Extremes . --Maximum discharge during year, 590 cfs May 27 (gage height, 3.20 ft); minimum 

 daily, 6.0 cfs Jan. 30, 31, Feb. 1.

1935-51: Maximum discharge, 1,490 cfs Oct. 12, 1941, from rating curve extended 

above 450 cfs; maximum gage height, 4.12 ft June 18, 1949; minimum daily discharge, 6.0 

cfs Sept. 3, 1942, Jan. 30, 31, Feb. 1, 1951. 

Maximum flood known occurred Oct. 5, 1911.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation of about 350 acres above station.

Rating tables, water year 195O-51, except periods 

(gage height, in feet, and discharge, in cubic fe

1 to Mar. 25 26 to Aug. 23

ice effect

Aug. 30 to Sept. 30

1.0 

1.3 54

1.6 100

2.0 180

2.5 320

2.3 470

1.3

1.6

53 

100 

2O5

Discharge, in cubic feet per second, water year October 1350 to September 1351

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2S

12

13

*15

14

13

13

12

12

12

11

11

10

10

10

10

10

3.8

1O

3.8

3.5

3.5

9.5

9.5

3.8

3.5

3.5

3.2

9.2

3.2

353.0

11.4

70O

Nov.

9.5

*9.5

9.0

3.0

9.0

9.0

3.2

9.2

3.0

6.5

6.8

8.0

8.5

8.5

8.5

8.0

3.0

3.5

11

12

13

14

15

14

14

15

15

15

15

15

323.7

10.8

642

Dec.

15

15

15

15

14

13

*13

12

12

13

14

14

12

13

12

12

12

13

13

13

12

13

13

13

13

13

13

12

12

12

12

4O3

13.0

793

Jan.

13

13

14

*14

14

14

13

13

13

13

13

13

12

11

11

11

3.5

3.8

3.0

8.8

9.0

9.0

3.0

3.0

8.5

8.5

8.0

7.5

7.0

6.0

6.0

329.6

1O.6

654

Feb.

6.0

6.5

6.5

7 .5

7.5

*7.5

7.5

7.5

7.5

8.O

3.0

10

11

13

12

11

9.5

10

10

10

11

10

11

12

12

12

*11

12

_

_

-

268.5

9.59

533

Mar.

12

12

14

14

13

12

14

15

14

15

14

12

13

14

13

20

18

17

16

18

23

24

25

36

51

60

42

33

34

30

27

681

22.0

1,350

Apr.

26

3S

*40

42

35

32

31

32

34

36

34

34

42

61

60

60

63

56

49

53

61

82

126

ToTT

90

84

74

74

64

53

1,660

55.3

3,290

May

46

+43

54

102

164

176

174

180

188

185

200

202

168

136

134

118

110

124

192

251

245

208

228

263

332

418

450

434

*350

308

272

6,461

208

12,820

June

200

T76

178

*162

154

170

178

188

185

172

158

146

152

154

154

166

172

166

154

142

140

114

34

82

72

64

58

53

46

40

-

4,090

136

8,110

July

38

36

33

30

27

24

24

22

20

*18

12

13

14

16

18

13

22

28

25

22

22

20

18

16

16

18

18

17

18

22

13

665

21.5

1,320

Aug.

18

22

26

35

30

38

*23

19

16

14

13

11

10

8.7

8.1

8.1

8.1

8.4

8.4

3.6

15

23

30

105

46

26

21

23

*30

190

TOT)

349.4

30.6

1,880

Sept.

7152"

40

32

26

22

20

18

17

15

15

14

14

13

13

13

12

12

12

11

11

11

11

11

11

11

10

3.1

8.8

9 . 1

-

545.0

18.2

1,O80

Calendar year 195O: Max 284 Min 6.5 Mean 54.8 Ac-ft 33,700

Water year 1350-51; Max 45O mn 6.O Mean 45.8 Ac-ft 33,180

Peak discharge (base, 800 efs). No peak above bas
SAN JUAN RIVER BASIN 303

Rito Blanco near Pagosa Springs, Colo.

Location.--Let 37°11'40", long. 106°54 I 20", in SWij sec. 12, T. 34 N., R. 1 W., on left 

bank at downstream side of county highway bridge, 600 ft upstream from Sheep Cabin 

Creek,and 7f miles southeast of Pagosa Springs.

Drainage area.--23.3 sq mi.

Records available.--May 1935 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,330 ft (from topographic map). Nov. 

21, 1939, to June 20, 1941, water-stage recorder at site 100 ft downstream at datum 

2.00 ft lower.

Average discharge.--16 years, 17.9 cfs.

Extremes.--Maximum discharge during year, 105 cfs May 28 {gage height, 2.21 ft); no flow 

for many days.

1935-51: Maximum discharge, 475 cfs May 13, 1941 (gage height, 3.21 ft, site and 

datum then in use), from rating curve extended above 350 cfs; no flow at times in 1939, 

1940, 1943-44, 1948, 1950, 1951.

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of no gage-height record, which are poor. 

Diversions for irrigation of about 150 acres above station. Diversions above station 

to adjoining drainages for irrigation of about 600 acres.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

7?

.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

0.6

0.02

1.2

Nov.

0*0~

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

0

0

.1

.z_

.2

.2

.1

.1

.1

.2

.2

.2

.1

.1

-

2.0

0.07

4.0

Dec.

0.1

.2

.3

.4

.3

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

6.1

0.20

12

Jan.

0.1

.2

*.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

4.1

0.13

8.1

Feb.

~0.1

.3

.4

.6

*.8

.8

.8

.8

1.0

1.2 TTS"

1.1

1.0

1.0

1.0

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

*1.0

1.0

_

_-

24.6

0.88

49

Mar.

1.0

175

1.0

1.0

1.0

1.0

2.0

3.0

4.0

5.0

6.0

6.0

5.5

5.5

5.0

5.0

4.5

4.5

4.5

5.0

5.5

5.0

5.0

6.0

6.5

7 .0

675

6.5

6.0

6.0

5.5

137.0

4.42

272

Apr.

5.5

5.0

*5.0

4.8

4.6

4.6

4.6

4.6

4.4

478

5.0

5.0

5.0

8.0

9.5

11

12

11

10

12

13

17

24

25

Z2

22

18

18

18

15

-

328.4

10.9

651

May

14

*12

12

17

28

38

38

42

42

42

44

49

44

34

30

27

25

26

37

49

51

43

41

47

58

65

74

79

*69

56

49

1,282

41.4

2,540

June

39

ZS

17

*15

14

11

6.5

5.5

4.8

4.4

4.Z

4.0

4.2

3.6

3.4

3.6

3.6

3.8

3.6

2.3

1.9

1.6

1.6

1.5

1.5

1.4

1.2

.9

.5

174

-

195.0

6.50

387

July

2.0

T79

1.6

1.5

.9

.6

.4

.3

.2

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

9.4

0.30

19

Aug.

O

.1

.8

1.3

1.4

.4

*0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

.6

1.6

0

0

0

*0

12

.6

18.8

0.61

37

Sept.

5 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

-

0.1

0.003

0.2

Calendar year 1950: Max 76 Mln 0 Mean 6.68 Ac -ft 4,840

Water year 1950-51: Max 79 Mln 0 Mean 5.50 Ac-ft 3,980

Peak discharge (base, 90 efa).--May 28 (l a.m.) 105 cfs (2.21 ft).

* Discharge measurement made on this day

Note.--No gage-height record Nov. 15, 16, Nov. 23 to Dec. 23, Dec. 30 to Apr. 2 (stage-discharge 

relation affected by ice during most of period), July 5-9, Aug. 2, 3, 6, 31, Sept. 1; discharge estimated on basis of 4 discharge measurements, weather records, recorded range in stage, and records 

for stations on nearby streams.
304 SAN JUAN RIVER BASIN

Navajo River at Banded Peak Ranch, near Chromo, Colo.

Location. Lat 37°05'00", long. 106°41 T 30", in NW£ sec. 24, T. 33 N., R. 2 E., on left bark 

1U rt downstream from private bridge on Banded Peak Ranch, half a mile downstream from 

Aspen Creek, 4 miles downstream from East Fork, and 9 miles northeast of Chromo.

Drainage area. 69.8 sq mi.

Records available. April 1937 to September 1951 (no winter records in 1943).

Gage. Water-stage recorder. Altitude of gage is 7,950 ft (from topographic map). Prior 

 fo Oct. 1, 1949, at same site at datum 3.00 ft higher.

Average discharge.--13 years (1937-42, 1943-51), 109 cfs.

Extremes. Maximum discharge recorded during year, 640 cfs May 27 (gage height, 4.55 ft); 

minimum daily discharge, 14 cfs Jan. 31.

1937-51: Maximum discharge, 1,340 cfs May 13, 1941 (gage height, 7.02 ft, present 

datum); minimum recorded, 10 cfs Sept. 26, 1950. 

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records fair. Diversions for irrigation of about 430 acres above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used May 30 to Aug. 10)

3.4 

4.0 

4.8

110

270

640

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3630"

20 2T

*29

30

26

27

25

26

24

25

24

25

24

24

24

24

22

23

22

22

24

23

22

24

24

23

22

22

22

762

24.6

1,510

Nov.

22

*22

21

20

20

20

21

21

20

16

16

16

17

19

17

16

17

19

23

23

24

25 2T

24

24

24

25

24

23

24

-

627

20.9

1,240

Dec.

25

2T

20

TZ

20

20

*20

20

20

20

22

23

21

22

23

23

22

22

22

22

20

21

21

22

22

22

21

20

20

20

20

660

21.3

1,310

Jan.

21

23

25

*28 ZB

26

22

20

19

18

19

19

19

19

18

19

19

18

17

16

17

18

19

18

16

18

17

17

16

15

ii

600

19.4

1,190

Feb.

1518-

22

25

24

*24

24

24

25

25

26 25

23

21

20

20

21

20

20

19

19

19

19

18

17

17

*16

16

_

_

-

582

20.8

1,150

Mar.

16

T7

17

18

19

20

21

22

23

25

24

23

24

26

27

29

28

27

26

29

32

32

32

34

38

48 ~S5

40

35

36

36

867

28.0

1,720

Apr.

3539-

*46

48

44

41

42

46

47

47

42

42

47

58

64

64

68

67

61

66

73

85

108

~m112

94

82

84

76

71

-

1,897

63.2

3,760

May

70

*6670-

98

144

158

161

168

171

174

181

192

174

144

129

117

122

117

156

201

206

181

192

206

243

314

450

520 *35o~

425

374

6,404

207

12,700

June

290

21ST

258

*226

215

240

261

270

278

261

243

226

223

223

223

232

246

229

212

198

184

161

136

122

110

100

90

80

76

73

-

5,947

198

11,800

July

59

64 B3

56

55

55

54

50

48

*45

36

32

32

32

32

32

39

48

47

41

36

34

36

36

37

35

34

36

36

46

47

1,335

43.1

2,650

Aug.

48

54

54

64

54

47

*43

45

42

39

38

36

34

32

32

31

31

29

25

30

39

48

50

92

7T

45

36

37

*43

71

45

1,389

44.8

2,760

Sept.

38

35

34

32

31

31

29

29

28

26

26

25

26

25

24

24

24

24

22

20

20

20

20

20

21

21

20

22

22

22

-

761

25.4

1,510

Calendar year 1950: Max 282 Mln 16 Mean 67.0 Ac-ft 48,470

Water year 1950-51: Max 520 Mln 14 Mean 59.8 Ac-ft 43,300

Peak discharge (base, 550 cfs). May 27 (4 p.m.) 640 cfs (4.55 ft).

14,

eather record
SAN JUAN RIVER BASIN 305

Little Navajo River at Chromo, Colo.

Location.--Lat 37°02'10", long. 106°50'35", in SE^ sec. 4, T. 32 N., R. 1 E., on left bank 

4uu rt upstream from bridge on U. S. Highway 84 at Chromo and a quarter of a mile upstream from mouth.

Drainage area. 21.9 sq mi.

Records available.--May 1935 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 7,293.52 ft (corrected) above mean sea 

 level, datum of 1929. Prior to Nov. 22, 1939, water-stage recorder at site 800 ft

downstream at different datum. Nov. 22, 1939, to Oct. 31, 1947, water-stage recorder

at site 400 ft downstream at datum 5.00 ft lower.

Average discharge. 16 years, 12.9 cfs.

Extremes.--Maximum discharge during year, 77 cfs May 26 (gage height, 3.01 ft); no flow 

ror many days in July and August.

1935-51: Maximum discharge, 399 cfs Fay 14, 1941 (gage height, 4.32 ft, site and 

datum then in use), from rating curve extended above 250 cfs; no flow at times in 1938, 

1939, 1946, 1950, 1951.

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

wnicn are poor. Diversions for irrigation of about 600 acres above station. One diversion above station for irrigation of about 50 acres below station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.7

1.8

1.9

2.0

0

.05 

.2

1.0 40

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

.272"

.2

3.3

0.11

6.5

Nov.

0.2

*.3

.3

.3

.3

.4

.4

.4

.2

.JL

.1

.5

1.4

1.7

2.3

1.9

2.6

2.3

3.0 274-

2.4

2.3

2.1

1.9

2.1

1.7

1.7

1.7

1.7

40.4

1.35

80

Dec.

2.3

2.3

2.3

3.2 276-

1.7

*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

1.1

1.1

1.1

1.1

1.1

1.1

1.0

.979"

41.6

1.34

83

Jan.

~rs- 0.9

.9

*.9

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.1

1.1

1.1

1.2

1.2

1.1

1.1

1.1

1.2

1.3 T73-

1.3

1.2

1.2

.2

.1

.1

.0

33.7

1.09

67

Feb.

1.1

Y7T

1.2

1.3

1.3

*1.3

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

TTff

1.6

1.6

1.6

1.6

1.6

1.6

1.7

1.8

1.7

1.6

1.5

*1.4 

1.4

_

-

43.0

1.54

85

Mar.

TTi" 1.4

1.5

1.5

2.0

3.0

4.0

5.0

6.0

7.0

8.0

S7C

7.0

7.0

7.0

6.0

5.6

5.9

5.6

5.3

5.6

5.6

4.8

5.6

6.8

8.0

6.5 

5.0

5.0

5.0

4.1

160.2

5.17

318

Apr.

4.1

47T

*5.0

6.2

6.5

7.1

6.2

6.2

5.6

6.2

4.8

4,6

5.0

6.8

7.7

9.5

10

10

9.5

11

13

16

22

24 277

18

15 

12

9.0

9.0

-

294.1

9.80

583

May

10

*9.0

9.0

13

20

26

25

23

22

25

28

29

27

20

15

12

12

9.5

14

19

22

17

16

1C

19

33

3T

27

*17

10

7.1

582.6

18.8

1,160

June

4.6 778-

2.6

*1.9

.9

.6

.7

.7

.5

.5

.4

.5

.5

.4

.5

.2

.1

7T

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.1

.1

.1

-

19.7

0.66

39

July

0.1 ~7T

.1

.1

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

.1

0.6

0.02

1.2

Aug.

0.1

.1

.1

.2

.2

.1

*.l

.1

0Q0

0

0

0

0

0

0

0

0

0

.1

.2

.2

.5

T?

.1

.1 

.2

*.3

.3

.1

3.3

0.11

6.5

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

-

3.0

0.10

6.0

Calendar year 1950; Max 56 Mln 0 Mean 4.51 Ac-ft 3,260

Water year 1950-51 : Max 33 Mln 0 Mean 3.36 Ac-ft 2,430

Peak discharge (base, 80 efs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10-12, Dec. 6 to Mar. 16 (no gage-height record Jan. 17 to Mar. 9; discharge estimated on basis of 2 discharge measurements, weather records, and 

records for stations on nearby streams).
306 SAN JUAN RIVER BASIN

Location. Lat 37°00'10", long. 106°54'20" J In NWij sec. 24, T. 32 N., R. 1 W., on right 

bank 340 ft downstream from highway bridge at Colorado-New Mexico State line, a quarter 

of a mile east of Edith, and 1 mile upstream from Coyote Creek.

Records available. --September 1912 to December 1914 and Jane 1935 to September 1951 in 

reports or Geological Survey. September 1912 to December 1928 and June 1935 to September 1950 in reports of Colorado State engineer. September 1912 to December 1928 in 

reports of New Mexico State engineer.

Gage. --Water-stage recorder. Datum of gage is 7,033.00 ft above mean sea level (Bureau of 

Reclamation bench mark). Prior to June 2, 1935, staff gage at site 250 ft upstream at 

different datum. June 2, 1935, to June 27, 1941, water-stage recorder at site 250 ft 

upstream at datum 2.00 ft higher.

Average discharge .--32 years (1912-28, 1935-51), 172 cfs.

Extremes . --Maximum discharge during year, 690 cfs May 28 (gage height, 4.44 ft); minimum 

observed, 11 cfs (discharge measurement) Dec. 7.

1935-51: Maximum discharge, 2,840 cfs Apr. 23, 1942 (gage height, 6.55 ft), from 

rating curve extended above 1,100 cfs; minimum observed, that of Dec. 7, 1950. 

Maximum flood known occurred Oct. 5, 1911.

Remarks . --Records good except those for periods of ice effect, which are fair. 

above station for irrigation of about 1,700 acres.

Diversions

Rating table, water year 1950-51, except periods of Ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

3.0 

3.5 

4.3

125 

27O 

620

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

13

13

14

15

16

17

18

19

20

21

22

33

24

25

36

37

38

39

30

31

Total

Mean

Ac- ft

Oct.

56

58

46

41

*40

38

33

33

33

33

31

32

31

29

25

26

26

26

30

32

32

31

32

32

29

32

32

30

30

30

28

1,037

33.5

2,060

Nov.

25

*26

28

28

28

28

29

29

29

22

19

21

23

25

23

22

28

28

33

30

32

32

31

31

31

31

32

32

29

28

-

833

27.8

1,650

Dec.

33

31

28

29

25

24

*24

24

24

25

26

27

26

27

28

28

28

27

27

27

26

25

26

27

27

27

26

25

24

24

24

819

26.4

1,620

Jan.

26

26

27

*28

30

29

27

26

26

£5

25

25

24

24

23

24

23

22

21

20

21

22

24

23

22

22

22

21

20

18

18

734

23.7

1,460

Feb.

18

23

27

30

28

*28

28

28

29

29

30

30

27

25

23

24

25

24

23

22

23

24

24

21

20

19

*18

18

_

_

-

688

24.6

1,360

Mar.

18

19

19

21

23

25

27

30

35

40

38

36

37

39

41

43

42

40

40

45

50

52

53

54

61

74

67

58

48

50

48

1,273

41.1

2,520

Apr.

48

48

*56

68

67

68

61

65

63

68

53

54

58

72

82

87

91

89

85

89

96

1O8

132

152

US

135

110

112

102

100

-

2,564

85.5

5,090

May

98

*93

89

125

172

217

208

211

211

223

229

278

346

270

134

152

160

158

217

290

306

270

260

286

358

448

512

605

*556

467

426

8,425

272

16,710

June

342

270

270

*256

242

252

22O

266

322

322

274

274

286

269

252

232

249

235

217

246

205

178

158

145

130

120

102

87

78

72.

-

6,571

219

13,030

July

56

61

67

63

54

52

47

46

44

*40

32

28

SI

29

32

32

29

35

43

37

34

34

33

35

34

34

33

32

38

36

54

1,251

40.4

2,480

Aug.

44

50

52

63

65

54

*47

43

40

37

35

34

29

23

22

22

22

22

20

20

25

42

47

72

108

61

46

46

*50

82

59

1,382

44.6

2,740

Sept.

48

43

41

38

35

29

28

28

28

24

22

22

26

27

26

22

21

21

22

19

16

17

16

16

16

15

16

15

18

20

-

735

24.5

1,460

Calendar year 1950; Max 370 Mln 18 Mean 89.5 Ac-ft 64,780

Water year 1950-51: Max 605 Mln 15 Mean 72.1 Ac-ft 52,180

Peak discharge (base. 600 cfs).--May 28 (1:30 a.m.) 690 cfs (4.44 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 10-16, 29, 30, Dec. 4, 5, Dec. 7 to Mar. 22.
SAN JUAN RIVER BASIN 307

Piedra River at Bridge ranger station, near Pagosa Springs, Colo.

Location Lat 37°25'40" (revised), long. 107°11'30", in sec. 22, T. 37 N., R. 3 rf. ( on

lert Dank 350 ft upstream from county bridge, 1,000 ft downstream from Bridge ranger

station, 1 mile downstream from Middle Fork, 'and 15 miles northwest of Pagosa Springs.

Drainage area.--82.3 sq mi.

Records available.--April 1937 to September 1941, July 1946 to September 1951.

Gage. Water-stage recorder. Datum of gage is 7,640.35 ft above mean sea level (Bureau of 

Reclamation bench mark). Prior to July 10, 1946, water-stage recorder at site 350 ft 

downstream at different datum.

Extremes.--Maximum discharge during year, 750 cfs May 27 (gage height, 5.17 ft); minimum 

 daily, 8.8 cfs Nov. 10.

1937-41, 1946-51: Maximum discharge, 1,800 cfs June 18, 1949 (gage height, 7.52 ft), 

from rating curve extended above 1,100 cfs; minimum not determined, occurred during 

period of no gage-height record.

Greatest flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for period of ice effect or no gage-height record, 

wnicn are poor. A few small diversions above station for irrigation of about 1,800 

acres.

Rating tables, water year 1950-51, except periods of ice effect 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 4

51

Apr. S to Sept. 30

14 3.5

22 4.0

46 4.7

225

365

585

120

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

48

5C *3-9

34

31

26

25

24

24

22

22

21

19

19

19

20

19

19

20

20

19

19

19

18

17

17

IS

IS

15

T6

711

22.3

1,410

Nov.

15

15

*14

13

13

14

14

14

13

8.8

blO

bll

b!4

re

18

b!7

b!7

blB

b!9

bTF

17

18

18

19

19

18

18

18

19

19

-

474.8

15. B

942

Dec.

18

TG

b!6

b!6

b!5

13

14

*15

15

15

15

15

15

15

15

15

15

14

15

15

15

14

14

15

15

13

12

11

T?

11

12

446

14.4

885

Jan.

11

10

*9.5 1T5~~

11

10

10

10

11

11

11

12

12

11

10

11

12

12

12

12

11

12

13

TZ

12

11

11

12

12

10

10

344.5

11.1

6B3

Feb.

9.0

12

13

14

14

 14

14

14

15

15

16 T6"

14

14

15

15

16

16

15

16

16

15

15

15

15

15

15

_

_

-

404.0

14.4

801

Mar.

*14

T5

14

15

15

16

IS

16

16

17

17

16

17

13

19

20

20

18

17

18

19

21

24

27

33_

30

27

24

22

25

23

609

19.6

1,210

Apr.

22

^

30

38

*36

34

37

36

36

36

27

23

32

43

54

60

64

53

49

52

54

5670'

84 ST

64

52

54

54

48

-

1,390

46.3

2,760

May

44

41

*TT

54

87

113

126

136

136

144

150

168

156

126

120

108

100

105

144

196

245

196

215

281

371

4B2

543

578

5739-

449

386

6,550

211

12,990

June

314

265

260

240

*230

258

270

272

268

260

232

ZOO

196

196

198

215

218

205

198

184

176

148

118

103

93

81

71

S3

54

49

-

5,635

188

11,180

July

4642"

34

32

31

29

26

25

23

22

20

*17

18

18

17

17

17

18

17

18

16

16

16

16

15

15

15

15

15

15

*16

657

21.2

1,300

Aug.

21

28

39

100

89

63

44

36

27

24

22

20

17

T£- 16

16

16

16

16

18

17

24

30

121

120

64

54

70

120

*275

TBTS

1,6B9

54.5

3,350

Sept.

112 ~9TT

74

60

53

46

43

42

40

35

33

31

30

29

26

23

24

22

21

21

21

22

19

18

18

17

T7

18

20

27

-

1,052

35.1

2,090

Calendar year 1950: Max 387 Mln 8.8 Mean 68.3 Ao-ft 49,440

Water year 1950-51: Max 578 Min 8.8 Mean 54.7 Ac-ft 39,600

Peak 

Disch

seharge (base, 600 

leasurement

b Stage-clscharge relation affected by ice.

Note.--No gage-height record Dec. 6 to Apr. 5 (stage-discharge relation affected by ice during 

lost of period); discharge estimated on basis of 5 discharge measurements, weather records, and 

>rds for nearby stations.
308 SAN JUAN RIVER BASIN

Pledra River near Piedra, Colo.

Location. Lat 37°14 1 00", long. 107°20'30", in sec. 8, T. 34 N., R. 4 W., on left bank 50

 ft downstream from bridge on U. S. Highway 160, three-quarters of a mile upstream from 

Yellow Jacket Greenland l|- miles north of Piedra.

Drainage area.--371 sq mi.

Records available.--November 1911 to July 1912, October 1939 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,530 ft (from topographic map). Prior

 to Sept. 26, 1941, water-stage recorder, staff and chain gages at several sites within 

1-| miles of present site at various datums.

Average discharge.--12 years, 346 cfs.

Extremes.--Maximum discharge during year, 1,780 cfs May 28 (gage height, 4.85 ft); minimum

 daily, 17 cfs Nov. 11.

1911-12, 1933-51: Maximum discharge, 5,400 cfs May 13, 1941 (gage height, 8.0 ft, 

from floodmarks, site and datum then in use), from rating curve extended above 3,040 

cfs; minimum daily, that of Nov. 11, 1950.

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

wnicn are fair. Diversions for irrigation of about 2,200 acres above station. Two 

small ditches divert water above station for irrigation of land below station.

Rating table, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

2.0 

2.5

3.0 

4.0 

5.0

205

435

1,030

1,950

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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.

120

*175

TZ5

105

92

85

75

72

68

66

66

62

56

56

55

54

52

52

54

54

52

52

52

50

46

46

43

43 

42

41

TT

2,052

66.2

4,070

Nov.

42

42

*41

37

38

39

39

39

38

27

b!7 b'ST

27

35

38

30

29

38

46

49

44

44

41

42

43

46

46

44 

44

42

1,148

38.3

2,280

Dec.

51 ~S5

35

50

40

*30

40

47

51

44

42

46

46

43

46

43

37

35

40

40

40

35

35

40

40

35

30

25 

3F

30

35

1,231

39.7

2,440

Jan.

35

35

35

*35

40

35

30

30

35

30

35

35

35

35

30

35

35

35

35

35

35

35

35

35

30

30

30

35 

30

25 55-

1,030

33.2

2,040

Feb.

25

30

35

40

35

b35

*b35

b37

b39

42

46

51

BT

b40

b42

b44

b45

46

46

42

42

44

44

44

44

42

43

41

_

-

1,150

41.1

2,280

Mar.

42

*43

43

41

13

43

46

47

53

64

66

54

57

62

66

76

76

68

60

62

70

92

95

104

128

158

T3?

118 

76

94

86

2,273

73.3

4,510

Apr.

77

*77

122

155

120

130

108

137

118

150

110

108

122

155

187

199

222

199

196

196

190

196

256

360 '276

276

230

233 

248

226

-

5,379

179

10,670

May

*196

178

168 159"

300

474

518

567

545

572

578

618

600

496

457

418

386

365

435

589

792

648

642

678

876

1,200

1,390

1,450 

1,290

1,170

1,030

19,825

640

39,320

June

*858 ~5TS

630

578

540

594

*618

636

584

600

523

468

457

457

435

452

501

452

420

390

360

310

250

216

196

170

152

139 

126

116

-

12,906

430

25,600

July

106

TOT

92

81

76

72

66

62

57

53

46

*39

39

41

39

38

36

39

42

42

37

37

35

36

39

35

35

3?. 

31

31

*35

1,552

50.1

3,080

Aug.

39

66

74

108

205

118

94

72

57

50

46

42

38

35

33

*33

36

37

35

36

43

57

79

137

272

137

112

150 

270

*600

355

3,466

112

6,870

Sept.

230 T75-

150

124

112

103

94

92

95

83

76

70

. 69

68

64

58

*53

51

49

46

46

46

44

42

42

383B38 

43

58

-

2,297

76.6

4,560

Calendar year 1950: Max 995 Mln 17 Mean 199 Ac-ft 144,300

Water year 1950-51: Max 1,450 Mln 17 Mean 149 Ac-ft 107,700

Peak discharge (base, 1,500 efs). May 28 (1 a.m.) 1,780 cfs (4.85 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 1-4, 6-26, Dec. 2-7, Dec. 18 to Feb. 5 (stage-discharge relation 

affected by ice during part of period), June 19-23, Aug. 28-30; discharge estimated on basis of 4 

,,-< = , . _. _ ^_ .. ,.,._____.__ , . . , , . ... .ecofds for station at Bridge range discharge measurements, weath 

station, and records fo

records, recorded range in stage, 

at Pagosa Springs.
SAN JUAN RIVER BASIN 309

San Juan River at Rosa, N. Mex.

Location.--Lat 37°00'20", long. 107°24'10 U , in sec. 20, T. 32 N., R. 5 W., on right bank 

about 75 ft upstream from highway bridge, a quarter of a mile downstream from Piedra 

River, and 1 mile north of Rosa.

Drainage area. 1,990 sq mi, approximately.

Records available. October 1930 to September 1951 in reports of Geological Survey. September 1920 to December 1931 in reports of State engineer.

Gage.--Water-stage recorder. Altitude of gage is 5,980 ft (from river-profile map). Prior 

 £o Dec. 23, 1949, at datum 1.0 ft higher. October 1930 to Nov. 25, 1933, and May 14,

1937, to Sept. 1, 1938, at site 200 ft upstream, datum 1 ft higher. Nov. 25, 1933, to

May 14, 1937, at site 300 ft upstream, datum 1 ft higher.

Average discharge. 31 years (1920-51), 1,157 cfs.

Extremes. Maximum discharge during year, 5,250 cfs May 28 (gage height, 6.13 ft); minimum 

daily, 67 cfs Sept. 28.

1930-51: Maximum discharge, 17,200 cfs Apr. 23, 1942 (gage height, 9.50 ft, present 

datum), from rating curve extended above 11,000 cfs by logarithmic plotting; minimum 

daily, 59 cfs Dec. 12, 1949.

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Discharge measurements generally made four times a month. Diversions 

for irrigation of about 14,000 acres above station.

Rating table, water year 1950-51, except period of Ice effect 

(gage height, in feet, and discharge, In cubic feet per second) 

(Shifting-control method used July 30 to Sept. 30)

0.7

.9

1.1

1.4

127

202

1.7 291

2.0 394

2.5 604

3.0 870

3.5 1,210

4.0 1,640

5.0 2,840

6.0 4,680

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

227

432 555-

294

263

236

213

194

191

186

180

168

168

165

152

145

148

145

145

148

148

148

148

145

145

143

141

TS5

145

145

141

5,742

185

11,390

Nov.

132

121

114

110

105

108

110

108

110

96

a77

37175"

119

152

108

88

103

141

155

138

136

134

123

123

129

136

136

136

129

-

3,527

118

7,000

Dec.

155

160

116

116

145

7476-

101

168

16?

150

165

165

145

160

148

125

108

108

121

110

100

85

90

95

95

95

90

80

85

90

3,683

119

7,310

Jan.

95

8055-

100

100

95

85

90

100

100 ' 100

100

100

85

90

1OO

120

120

110

110

110

110

110

110

110

110

120

140

TZG

130

100

3,255

105

6,460

Feb.

80

9TT

100

120

130

150

150

150

160

160

170

180

200

1ST

155

158

165

162

170

178

158

165

178

188

183

162

162

155

_

_

-

4,362

156

8,650

Mar.

127

155

138

101

HT

148

162

180

216

344

387

317

285

327

362

398

355

272

219

216

233

304

324

301

341

432

476 TO9"

321

272

272

8,537

275

16,930

Apr.

276

245

2BT

380

394

394

4O9

402

387

421

398

344

355

428

536

572

628

628

604

599

604

652

728

997

50T

870

783

755

755

755

16,457

549

32,640

May

677

604

5So~ 540

811

,290

,500

,590

,590

,590

,590

,740

,790

,500

,330

,210

,060

,030

,140

,640.

,120

,950

,840

,950

,290

3,150

3,860

4,460

4,250

3,760

3,320

57,762

1,863

114, 600

June

2,690

2,170

2,060

1,900

1,690

1,690

1,790

1,900

1,900

1,900

1,740

1,540

1,500

1,450

1,410

1,450

1,590

1,590

1,450

1,370

1,290

1,170

997

870

783

728

652

572

514

468

42,524

1,427

84,940

July

409 376"

344

311

294

276

245

213

197

175

155

138

125

118

121

119

123

118

132

178

143

121

118

112

118

121

123

127

116

113

108

5,487

177

10,880

Aug.

378

186

291

254

554

405

338

251

205

172

148

136

123

allO

96

94

84

81

82

79

76

llff

202

317

729

421

304

269

351

1,210

 7BJ

8,677

280

17,210

Sept.

536

23?

365

317

285

257

233

216

208

191

165 1'43

127

129

119

110

101

93

88

86

84

81

79

77

75

71

69

67

7£

91

-

4,971

166

9,860

Calendar year 1950: Max 3,070 Mln 60 Mean 637 Ac-ft 460,900

Water year 1950-51: Max 4,460 Mln 67 Mean 453 Ac-ft 327,900

eak discharge (base, 4,000 cfs). May 28 (7:20 a.m.) 5,250 cfs (6.13 ft), 

o No gage-height record; discharge estimated on basis of recorded range in st 

and records for stations at Pagosa Springs and near Blanco.

Note. Stage-discharge relation affected by ice Dec. 22 to Feb. 13.

;age, weather records,

256684 O - 53 - 21
310 SAN JUAN RIVER BASIN

Los Pinos R3ver below Snowslide Canyon, near Weminuche Pass, Colo. 

(Locally known as Pine River)

Location.--Lat 37°38'20" (revised), long. 107°20'00", in sec. 5, T. 39 N., R. 4 V., on 

right bank 100 ft downstream from Snowslide Canyon, 3^ miles south of Weminuche Pass, 

and 7 miles southwest of Rio Grande Reservoir Dam.

Drainage area.--25.3 sq mi.

Records available.--October 1937 to September 1941, May 1945 to September 1951 (no winter 

records 1937-4!, 1945-46).

Gage.--Water-stage recorder. Altitude of gage is 10,120 ft (from topographic map). 

Average discharge.--5 years (1946-51), 32.5 cfs.

Extremes.--Maximum discharge recorded during year, 134 cfs June 7 (gage height, 1.80 ft); 

minimum daily recorded', 3.2 cfs Nov. 10, but may have been less during period of no 

gage-height record.

1937-41, 1945-51: Maximum discharge, 650 cfs May 29, 1938, from rating curve extended above 300 cfs; maximum gage height, 4.38 ft June 18, 1949; minimum discharge 

not determined, occurred during period of no gage-height record.

Remarks.--Records good except those for period of ice effect or no gage-height record, 

which are poor. Two small diversions above station from Los Pinos River basin to 

Rio Grande basin.

Revisions. W 1089: Drainage area.

Rating tables, water year 1950-51, except periods of loe effect 

(gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to June 2

0.5 

.6

2.5 

4.0 

7.0

1.1 

1.4 

1.6

ne 3 to Sept. 30 

0.6 5.0

.9 

1.2 

1.7 117

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

34

25

36

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

16

15

12

11

9.4

8.6

*8.2

7.8

7.4

7.0

6.7

6.7

6.4

6.4

7.0

7.0

6.7

6.4

6.1

6.1

6.1

5.8

5.8

5.8

5.5

5.2

5.2

5.0

^0

5.0

5.2

227.5

7.34

451

Nov.

5.4

5.0

4.6

4.4

4.4

4.6

4.6

4.6

4.4

3.2

3.4

3.7

4.0

4.3

4.2

4.0

4.3

4.9

4.6

4.0

4.0

4.0

4.0

4.0

3.8

3.8

4.0

3.9

3.7

3.5

125.3

4.18

249

Dec.

3.6

3.9

3.9

3.9

3.7

3.9

3.9

3.7

3.6

3.7

3.7

3.6

3.9

3.7

3.7

4.0

4.0

4.0

3.9

3.9

3.9

3.8

3.8 3.9

3.5

116.1

3.75

230

Jan.

3.5

108.5

3.5

215

Feb.

4.0

_

_

-

112.0

4.0

222

Mar.

V

 7.5

232.5

7.5

461

Apr.

18

-

54O

18

1,070

May

65

2,015

65

4,000

June

100

85

*73

70

78

102

103

90

74

62

51

51

50

48

45

48

54

44

42

41

38

33

28

26

25

23

22

21

21

25

-

1,573

52.4

3,120

July

24

22

21

21

20

20

19

18

17

17

17

16

*16

15

14

14

16

15

15

14

14

14

12

12

12

11

11

11

10

10

10

478

15.4

948

Calendar year 195O: Max 94 Mln - Mean 18.1 Ac-ft 13,140

Aug.

10

13

15

23

17

18

*14

12

12

10

10

9.5

9.0

8.5

8.0

7.7

7 .7

7.7

7.7

12

11

14

11

20

17

12

12

17

31

34

23

433.8

14.0

860

Sept.

19

17

15

14

*14

13

13

13

12

12

11

10

10

9.5

9.5

9.5

9.5

9.5

9.0

8.0

9.0

8.0

8.5

8.0

1+L

7.7

7.7

8.0

12

10

-

324.1

10.8

643

Water year 1950-51: Max - Mln - Mean 17.2 Ac-ft 12,470

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 25 to Nov. 16, Nov. 28-30, Dec. 21-24. No 

gage-height record Dec. 25 to June 2 (stage-discharge relation affected by Ice during part of period); discharge estimated on basis of weather records and records for stations on nearby streams.
SAN JUAN RIVER BASIN 311

Vallecito Reservoir near Bayfield, Colo.

Location.--lat 37°23', long. 107°34', in sec. 19, T. 36 N., R. 6 W., at Vallecito Dam on 

Los Pinos (Pine) River, 1,000 ft upstream from Little Red Creek,and 11 miles northeast 

of Bayfield.

Records available.--April 1941 to September 1951.

Gage. Float gage read once a day. Datum of gage is 7,580 ft above mean sea level (Bureau of Reclamation bench mark); gage readings have been reduced to elevations above 

mean sea level.

Extremes.--Maximum contents observed during year, 63,410 acre-ft June 22 to 26 (elevation, 

7,639.2 ft); minimum observed, 21,390 ft Nov. 13 to 19 (elevation, 7,612.9 ft).

1941-51: Maximum contents observed, 113,100 acre-ft July 10, 1947 (elevation, 

7,660.05" ft); minimum observed, 1,520 acre-ft Oct. 24, 25, 1944 (elevation, 7,584.1 ft).

Remarks.--Reservoir is formed by an earth and rock-fill dam; dam completed in March 1941. 

Capacity of reservoir, 126,280 acre-ft between elevations 7,580 ft (sill of outlet 

gate) and 7,665 ft (crest of spillway). Dead storage, 3,395 acre-ft. Water is used 

for irrigation in Pine River basin. Figures given herein are usable contents.

Cooperation.--Records furnished by Bureau of Reclamation. 

Revisions (water year).--W 959: 1941.

Monthly elevation and contents, water year October 1950 to September 1951

Date

Oct. 31.. .................

Calendar year 1950 ......

Feb . 28 ...................

Sept. 30...................

Water year 1950-51......

Elevation 

(feet)

,616.1

,613.7

-

,615.1

,615.0

,634.0

-

Contents 

(acre-feet)

25,040

-

-

Change in contents 

during month 

(acre-feet)

-2,770

-24,550

-2,320
312 SAN JUAN RIVER BASIN

Los Pinos River near Bayfield, Colo. 

{Locally known as Pine River)

Location.--Lat 37°21', long. 107°36', in sec. 26, T. 36 N., R. 7 W., on right bank a 

quarter of a mile downstream from Red Creek and 9 miles north of Bayfield.

Drainage area.--284 sq mi.

Records available.--October 1933 to September 1951 in reports of Geological Survey. May 

to September 1926, published as "Pine River above Bayfield, October 1927 to September 

1951, published as Pine River near Bayfield," in reports of State engineer.

Gage.--Water-stage recorder. Datum of gage is 7,415.08 ft above mean sea level, adjustment of 1912. May 25 to Sept. 30, 1926, at site 2 miles upstream at different datum. 

Oct. 26, 1927, to Oct. 14, 1936, at site 300 ft downstream at present datum.

Average discharge.--24 years (1927-51), 362 cfs.

Extremes.--Maximum discharge during year, 588 cfs June 19, 21, 22 (gage height, 2.81 ft); 

minimum daily, 26 cfs Jan. 31 to Feb. 2.

1926-51: Maximum daily discharge, 5,070 cfs May 26, 1926; minimum daily, 3.2 cfs 

Feb. 11, 1941 (result of storage in Vallecito Reservoir); minimum daily prior to construction of Vallecito Reservoir, 38 cfs Dec. 21, 22, 1937. 

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records excellent. Discharge regulated by storage in Vallecito Reservoir (see 

preceding page). Diversions above station for irrigation of about 100 acres below 

station.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

0.9 

1.1 

1.4 

1.7

69

122

2.0 

2.5 

3.0

206

413

706

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

174

160

160

160

160

160

157

157

154

154

154

*154

154

152

152

149

149

146

146

146

146

144

*141

134

134

134

134

134

124

116

He

4,555

147

9,030

Nov.

116

108

95

84

76

76

76

76

76

76

76

76

76

70

57

57

57

49

34

34

*34

34

34

34

34

34

34

34

34

34

-

1,785

59.5

3,540

Dec.

34

3T

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

34

31

28

28

1,039

33.5

2,060

Jan.

28

28

28

*28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

28

26

28

28

27

27

*27

27

27

27

28

27

ZB,

859

27.7

1,700

Feb.

a26

a26

27

27

27

27

27

*27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

27

_

_

-

754

26.9

1,500

Mar.

27

28

28

28

28

28

28

*28

28

28

28

28

28

28

28

28

28

28

28

28

26

28

28

26

28

29

29

29

29

29

30

674

28.2

1,730

Apr.

30

30

30

30

30

30

30

30

30

30

*30

30

31

31

31

31

32

32

32

32

32

32

32

32

32

32

32

32

41

76

-

985

32.8

1,950

May

59

59

*59

59

59

74

163

168

*168

184

269

325

338

338

338

343

343

343

361

424

450

455

455

455

461

488

511

534

546

552

558

9,939

321

19,710

June

558

558

558

*558

558

558

564

564

564

570

570

570

570

576

576

576

582

582

588

582

588

588

534

505

528

546

*558

558

552

552

-

16,891

563

33,500

July

558

558

558

552

552

552

552

552

552

552

552

546

546

546

546

552

546

*546

540

540

546

546

546

540

500

483

494

500

500

500

500

16,653

537

33,030

Aug.

505

500

488

434

399

399

385

366

*366

366

366

366

375

375

375

375

375

371

371

366

366

*366

361

352

320

320

320

311

289

272

269

11,469

370

22,750

Sept.

269

258

254

*254

254

247

244

244

244

244

244

*244

244

244

240

240

240

240

244

247

247

247

251

269

*269

269

265

265

265

269

-

7,555

252

14,990

Calendar year 1950: Max 691 Min 28 Mean 262 Ac-ft 189,500

Water year 1950-51: Max 5S8 Min 26 Mean 201 Ac-ft 145,500

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of gate openings at Vallecito Reservoir
SAN JUAN RIVER BASIN 313

Los Pinos River at Ignacio, Colo. 

(Locally known as Pine River)

Location.--Lat 37°07'45", long. 107°37'50", in sec. 5, T. 33 N., R. 7 W., on downstream 

wingwall of left abutment of highway bridge, three-quarters of a mile upstream from 

Ignacio, 2 miles upstream from Rock Creek, and 6 miles south of Bayfield.

Drainage area. 448 sq mi.

Records available.--April 1899 to October 1903, September 1910 to December 1914, and OctoDer J.93U to September 1951 in reports of Geological Survey. April 1899 to October 1903, 

September 1910 to November 1912 and March 1913 to December 1931 in reports of State 

engineer of New Mexico.

Gage. Water-stage recorder. Datum of gage is 6,468.85 ft above mean sea level, datum of 

1929, supplementary adjustment of 1940. April 1899 to October 1903, staff gage on bridge 

just downstream at different datum. September 1910 to 1925, chain gage at present site 

at different datum.

Average discharge.--28 years (1910-11, 1913-40), 373 cfs (prior to completion of Vallecito 

 Dam); 11 years (1940-51), 253 cfs.

Extremes. Maximum discharge during year, 282 cfs Aug. 3 (gage height, 2.95 ft); minimum 

daily, 11 cfs Feb. 24, 25.

1910-14, 1930-51: Maximum discharge recorded, 5,570 cfs Aug. 27, 1932 (gage height, 

6.19 ft), from rating curve extended above 2,600 cfs by logarithmic plotting; minimum 

daily observed, 0.1 cfs Aug. 11, 1913.

Maximum flood known, occurred Oct. 5, 1911 (discharge not determined), when gage was 

destroyed.

Remarks.--Records good except those for period of ice effect, which are poor. Discharge 

measurements generally made four times a month. Flow regulated by Vallecito Reservoir 

(see p. 311). Diversions for irrigation of about 25,000 acres above station.

Rating table, water year 1950-51, except periods of tee effect

(gage height, in feet, and discharge, in cubic feet Lier second)

(Shifting-control method used Jan. 9-30, Aug. 24 to Sept. 26)

1.6

1.7

1.8

1.9 42

2.0 57

2.1 75

2.2 96

2.3 118

2.4 143

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

E2

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

57

TO

40

32

23

23

26

26

26

26

24

22

Nov.

24

26

26

22

22

19

14

12

TZ

14

16

33

24 1 44

281 61

32

30

26

26

24

26

26

24

20

273

20

24

26

28

28

28

26

871

28.1

1,730

6_4

48

44

42

57

44

45

45

44

42

44

41

44

46

46

48

-

1,089

36.3

2,160

Dec.

50

46

46

56

59

48

56

56

56

54

54

54

51

51

50

50

51

52

50

41

44

45

44

46

45

46

51

44

48

42

52

1,538

49.6

3,050

Jan.

48

17

34

45

36

28

30

35

42

36

44

41

37

26

15

46

48

46

45

41

42

45

41

36

36

33

37

26

28

38

28

1,174

37.9

2,330

Feb.

b20

b!7

b!9

b26

b42

b43

b44

b45

44

44

45

46

48

TS

40

40

42

42

44

42

40

36

13

11

IT

38

41

40

_

-

1,005

35.9

1,990

Mar.

38

42

40

35

5T

43

50

52

56

73

68

56

51

52

54

56

50

45

41

44

45

50

50

45

44

45

44

40

38

37

37

1,477

47.6

2,930

Apr.

423"8

35

14

15

15

16

15

17

15

13

12

TZ

13

12

13

16

15

14

14

13

13

12

14

15

13

20

19

17

32

-

524

17.5

1,040

May

28

36

49

22

26

30

54

57

30

26

28

44

32

38

40

37

33

32

31

35

56

40

28

26

20

24

28

31

34

28

24

1,047

33.8

2,080

June

31

37

37

34

31

26

22

ZI

24

26

32

38

38

31

34

41

41

42

48

45

40 34

38

31

31

33

42

37

36

32

-

1,037

34 .«

2,060

July

36

33

2870-

li

68

38

32

33

37

44

42

45

44

36

38

38

45

45

40

42

42

41

44

45

40

38

40

38

36

37

1,306

42.1

2,590

Aug.

49

75

~56~ 128

59

52

44

36

34

33

33

32

34

31

30

28

31

33

34

42

48

59

64

95

81

51

51

61

61

56

44

1,598

51.5

3,170

Sept.

41

42

38

33

33

32

32

33

30

28

24

19

20

20

20

20

22

18

15

15

16

12

TE

20

22

22

24

28

34

48

-

777

25.9

1,540

Calendar year 1950 : Max 232 Mln 12 Mean 70.9 Ac-ft 51,360

Water year 1950-51 : Max 128 Mln n Mean 36.8 Ac-ft 26,670

b Stage-discharge relation affected by Ice
314 SAN JUAN RIVER BASIN

Los Pinos River at La Boca, Colo. 

(Locally known as Pine River)

Location. lat 37°00'40", long. 107°35'55", in Sj sec. 15, T. 32 H., R. 7 W., on downstream 

end of right abutment of Denver & Rio Grande Western Railroad bridge, 0.1 mile upstrean 

from Spring Creek, at southeast edge of La Boca, about 13 miles upstream from mouth.

Drainage area.--510 sq mi, approximately.

Records available. January to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 6,140 ft (from topographic map).

Extremes.--Maximum discharge during period, 326 cfs Aug. 3 (gage height, 4.13 ft); minimum 

 daily, 14 cfs Apr. 23, 24, 26.

Maximum flood known, occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Discharge measurements generally made once a week. Flow is regulated 

by Vallecito Reservoir (see p. 311 ). Diversions for irrigation of about 33,000 acres 

above station.

Rating table, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

2.7

2.8 

3.0 

3.2

9.4

15

59

3.4 

3.6 

3.8 

4.1

145

207

330

Discharge, In cubic feet per second, January to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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.

60

60

45

50

50

35

55

40

45

45

45

45

40

40

45

50

50

50

50

45

45

48

b45

b45

b40

b40

b45

t>40

t>40

b45

b40

1,398

45.1

2,770

Feb.

30

25

25

40

b50

b55

b55

55

55

55

58

60

62

55

48

46

49

46

49

45

46

49

29

23

5?

36

49

51

_

_

-

1,271

45.4

2,520

Mar.

51

53

46

39

5Z

51

53

56

59

73

73

66

61

62

61

62

53

49

44

45

43

46

48

44

44

45

45

41

41

43

45

1,594

51.4

3,160

Apr.

59

55

55

31

23

27

27

25

23

20

18

17

16

16

15

15

15

18

15

17

18

15

14

IT

16

14

18

21

21

25

684

22.8

1,360

May

40

33

56

30

27

33

43

61

37

32

33

46

45

53

53

52

46

49

45

41

6953~

44

39

35

34

40

46

55

51

53

1,374

44.3

2,730

June

55

FT

66

73

68

68

64

69

69

71

86

98

§T

82

82

86

90

92

90

88

92

86

90

84

84

82

78

78

73

71

2,368

78.9

4,700

Calendar year : Max Mln Mean Ac -ft

July

74

80

71

94

90

88

73

69

Tff

80

78

73

76

88

78

84

78

84

90

90

92

96

57

96

94

86

86

82

84

78

78

2,580

83.2

5,120

Aug.

90

137

182

T3F

127

110

96

84

76

74

74

69

68

61

58_

58

61

69

68

76

82

96

110

144

157

108

110

119

145

142

108

3,107

100

6,160

Sept.

96

3T

94

84

73

73

71

69

63

64

55

48

415

48

44

46

49

46

40

4TT

41

41

41

45

45

48

46

46

59

86

1,750

58.3

3,470

Water year : Max Mln Mean Ac-ft

b Stage-discharge relation affected by Ice.

Note . No gage-height record Jan. 1-22, Feb. 1-4, 8-12; discharge estimated on basis of recorded 

'ange In stage, weather records, and records for station at Ignaclo.
SAN JUAN RIVER BASIN 315

Spring Creek at La Boca, Colo.

Location.--Lat 37°00'50", long. 107°35'40", in S| sec. 15, T. 32 N., R. 7 W., on right 

banlc in an excavated channel, a quarter of a mile upstream from mouth,and £ mile east 

of La Boca.

Drainage area.--58 sq mi, approximately.

Records available. January to September 1951.

Gage. Water-stage recorder. Altitude of gage is 6,160 ft (from topographic map).

Extremes. Maximum discharge during period, 123 cfs Aug. 5; maximum gage height, 2.37 ft 

Aug. 2; minimum daily discharge, 1 cfs Feb. 25, 26.

Remarks.--Records good except those for periods of ice effect, which are poor. Discharge 

measurements generally made four times a month. Part of flow is return waste from 

irrigation.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

1.4 

2.6 

4.5. 

7.0 

10

1.2 

1.4 

1.6 

1.8 

2.0 83

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

B

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

25

27

28

29

30

31

Total

Mean

Ac- ft

Oct. Nov. Dec. Jan.

> a3

3

3

3

2.5

2

?

2.5

3

2.5

2

88.5

2.85

176

Feb.

1.5

2

2.5

3.5

4

4.5

5

6

7

9

12

W

9

8

7

6

5.5

5

4

3

2.5

2

1.5

1.5

1

1

1.5

1.5

_

_

-

127.0

4.54

252

Mar.

2

3.5

6

5\5

4.1

4.5

3.8

3.6

3.6

4.3

3.9

3.4

3.4

3.6

3.2

3.0

2.8

2.6

2.5

2.3

2.3

2.1

2.0

1.7

1.6.

1.7

1.9

2.0

2.5

3.6

3.9

96.9

3.13

192

Apr.

8.5

11

8.8

13

23_

6.8

9.7

5.0

3.8

3.6

4.1

4.5

4.8

5.8

5.2

5.0

6.2

6.5

7.3

7.9

8.8

7.0

6.8

5.8

5.0

5.2

4.8

4.8

5.0

6.5

-

Z10.2

7.01

417

May

12

14

12

9.1

12

9.1

7.9

is 6.8

20

14

14

16

23

22

20

20

22

19

20

26

31

32

2?

22

22

22

24

26

27

27

598.9

19.3

1,190

June

31

34

36

37

3T

35

29

31

29

28_

30

32

34

31

31

31

29

31

28

29

34

30

31

30

30

30

34

35

36

37

957

31.9

1,900

July

39

43

37

39

45

43

39

38

39

37

54

ST

4142'

43

43

41

44

48

49

48

48

50" 50

45

45

47

46

46

41

43

1,327

42.8

2,630

Aug.

47

66

67

71

83_

61

55

48

52

39

37

37

36

35

30

28

29

29

27

2?

30

31

41

52

50

39

36

41

47

45

38

1,356

43.7

2,690

Sept.

35

3T

34

32

30

31

29

29

28

25

 26

25

24

24

22_

23

24

24

22

22

22

22

22

25

28

27

25

24

26

31

-

796

26.5

1,580

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

Peak discharge (base, 120 efs). Aug. 2 (8:20 p.m.) 122 cfs (2.37 ft); Aug. 5 (1:00 a.m.) 123 cfs 

(2 .36 ft}.

Note. Stage-discharge relation affected by ice Jan. 22 to Mar. 4, 17-19 (no gage-height record 

PeBTT-5).
316 SAN JUAN RIVER BASIN

Citizens ditch near Turley, N. Mex.

Location. Lat 36°46'35", long. 10V 0 44'05", in NEiNEir sec. 35, T. 30 N. , R. 9 W. , on right 

Danfc:, 2.3 miles downstream from head,and 3.0 miles northeast of Turley.

Records available. April to September 1938, February to September 1951.

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 5,650 ft (from river- 

 profile map).

Remarks. Records excellent. Discharge measurements generally made three times a month. 

Diversions for irrigation of about 300 acres above station. Part or all of flow may be 

wasted back to San Juan River above Blanco station.

Monthly discharge, In cubic feet per second, March to September, 1951

Month

September. .......

Maximum

145

Minimum

123

Mean

25.5

137

152

134

Runoff In 

acre-feet

1,570

7,720

8,180

9,330

7,990
SAN JUAN RIVER BASIN 317

San Juan River near Blanco, N. Mex.

Location. Lat 36°43'50", long. 107°48'50", in NE^ sec. 18, T. 29 N., R. 9 W., on left 

bank half a mile upstream from highway bridge, 1 mile upstream from Canyon Largo, and 

la miles east of Blanco.

Drainage area. 3,560 sqmi, approximately.

Records available. December 1908 to October 1910 (gage heights only January to October 

lyio) and October 1930 to September 1951 in reports of Geological Survey. December 

1908 to December 1909 and June 1927 to December 1931 in reports of State engineer.

Gage.' Water-stage recorder. Altitude of gage is 5,540 ft (from river-profile map). Prior 

 £o Dec. 21, 1950, at datum 1.0 ft higher. From December 1908 to August 1909, chain

gage half a mile downstream, September 1909 to October 1910, temporary staff gage at

same site, both at different daturns.

Average discharge. 23 years (1928-51), 1,425 cfs.

Extremes. Maximum discharge during year, 5,100 cfs May 28 ('gage height, 5.95 ft); minimum 

daily, 32 cfs Aug. 21.

1930-51: Maximum discharge, 23,300 cfs May 14, 1941 (gage height, 8.46 ft); minimum 

daily, 17 cfs Aug. 18, 24, 25, 1939.

Maximum stage known, 20 ft Oct. 5 or 6, 1911.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Discharge measurements generally made four times a month. Diversions 

for irrigation of about 48,000 acres above and 4,500 below station. Records of chemical 

analyses,water temperatures, and sediment loads for the water year 1951 are given in 

Water-Supply Paper 1200.

Rating table, water year 1950-51, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

0.3

.5 

.7

1.0

45

69

115

1,5 

2.0 

2.5 

3.0

236

430

710

1,080

4.0 

5.0 

6.0

2,030

3,380

5,200

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

283

345

560

52T

365

329

309

291

273

266

252

233

224

206

192

177

172

172

162

160

162

169

179

160

144

136

155

134

128

126 T3D"

7,015

226

13,910

Nov.

119

119

113

103

1OO

98

100

100

98

103

98

96

95

101

151

155

119

98

92

ITT

144

138

136

134

128

130

130

138

153

155

-

3,561

119

7,060

Dec.

172

206

T7T

142

155

138

98

128

126

172

172

160

162

167

157

167

160

140

126

136

126

110

106

101

115

113

110

100

90

5CT

100

4,222

136

8,370

Jan.

110

100 TDD'

110

120

120

120

110

110

120

120

120

130

120

120

110

110

130

140

14O

130

130

140

140

140

140

130

140

160 IBO"

130

3,900

126

7,740

Feb.

llo- 90

120

150

170

ISO

190

190

200

200

210

230

260 230"

190

190

200

209

212

215

198

157

130

134

134

130

121

121

_

_

-

4,871

174

9,660

Mar.

113

98

1DT

113

113

147

149

162

174

215

398

440

369

341

377

416

455

394

301

.259

259

283

353

357

337

377

500 5DD"

435

337

301

9,178

296

18,200

Apr.

294

227

195 2T5"

345

341

390

349

341

309

341

276

230

243

333

435

460

530

505

505

590

608

638

808

920

738

773

638

680

704

13,958

465

27,690

May

674

602

530 530"

745

1,160

1,460

1,560

1,560

1,510

1,510

1,560

1,710

1,610

1,330

1,240

l.OBO

1,040

1,000

1,380

1,920

2,140

1,810

1,810

2,030

2,850

3,700

4,510

4,310

3,7SO

3,380

55,891

1,803

110,900

June

2,850

2,200

a2,000

al,800

al,700

al,600

1,710

1,860

1,920

1,920

1,810

1,710

1,560

1,510

1,510

1,510

1,610

1,610

1,560

1,460

1,460

1,420

1,200

1,010

850

a780

692

602

510

a450

44,384

1,479

88,030

July

a4OO

a55Q~

317

280

287

269

236

192

174

162

136

110

 101

94

90

88

86

82

BT

96

134

206

119

105

112

121

106

117

112

95

88

4,948

160

9,810

Aug.

117

224

512

470

721

614

426

345

252

212

187

177

155

108

75

53

a45

a 40

a37

a34

32

4?

132

345

767

808

430

353

377

960

1,380

10,437

337

20,700

Sept.

794

5BTT

470

390

a300

236

212

184

169

155

121

113

96

82

77

a70

a62

a56

54

48

41

40

42

40

50

47

46

39

4T

70

4,714

157

9,350

Calendar year 1950: Max 3,180 Min 90 Mean 709 Ac-ft 513,100

Water year 1950-51: Max 4,310 Min 32 Mean 458 Ac-ft 331,400

Peak discharge (base, 5,000 cfs). Hay 28 (3 p.m.) 5,100 cfs (5.95 ft).

a NO gage-height - record; discharge computed on basis of recorder trace, weather records, and

records for main-stem and tributary stations above and below.

Note . Stage-discharge relation affected by ice Dec. 27 to Feb. 17.
318 SAN JUAN RIVER BASIN

Animas River at Howardsville, Colo.

Location.--Lat 37°50'00", long. 107°36'00", in sec. 12, T. 41 N., R. 7 W. , on right 

bank 1,000 ft downstream from bridge on State Highway 110, 0.4 mile southwest of 

Howardsville, and half a mile downstream from Cunningham Creek.

Drainage area. 55.9 sq mi.

Records available.--May 1936 to September 1951 (no winter records 1936-39).

Gage.--Water-stage recorder. Datum of gage is 9,616.98 ft above mean sea level, adjustment of 1912. Prior to Aug. 18, 1939, at same site at datum 1.0 ft higher.

Average discharge.--12 years (1939-51), 111 cfs.

Extremes. --Maximum discharge during year, 862 of s'June 16 (gage height, 3.18 ft); minimum daily, 11 cfs Feb. 1.

1936-51: Maximum discharge, 1,980 cfs June 18, 1949, from rating curve extended 

above 950 cfs; maximum gage height, 4.50 ft June 21, 1938; minimum daily discharge, 

11 cfs Feb. 27, 28, 1941, Mar. 17-20, 1945, Feb. 1, 1951.

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect, which are fair. No diversion above station.

Rating tables, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 26 May 27 to Sept. 30

1.5 88

2.0 190

2.5 345

0.9 

1.0 

1.2 

1.5 83

2.0 190

2.5 380

3.0 700

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

34

*31

33

32

31

29

28

27

27

26

26

26

26

26

26

27

26 

26

25

25

24

23

24

23

23

24

22

21

21

*20

20

802

25.9

1,590

Nov.

20

19

18

19

18

18

18

18

18

bl3_

b!6

b!6

16

16

b!5

b!5

b!5 

b!6

17

16

16

17

b!5

b!5

b!5

b!5

b!5

b!5

b!5

b!5

490

16.3

972

Dec.

b!5

b!4

b!4

b!5

b!5

b!3

b!5

*b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6 

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!6

b!5

b!5

483

15.6

958

Jan.

b!5

b!5

b!4

b!3

b!4

*b!3

b!2

b!2

b!2

b!2

b!3

b!4

b!4

b!4

b!3

b!4

b!5 

b!4

b!4

b!4

b!4

15

15

15

b!4

b!3

b!41=1

b!4

b!3

b!2

425

13.7

843

Feb.

bll

b!2

b!2

b!2

*b!2

b!2

b!3

b!4

b!4

b!4

15

15

15

b!3

b!3

b!3

b!4 

b!4

14

b!3

b!3

b!3

14

15

14

*b!4

b!4

b!3

_

-

375

13.4

744

Mar.

b!2

b!3

12

13

14

14

14

b!3

13

14

13

b!2

b!3

b!3

b!4

14

b!3 

b!2

b!2

b!3

14

14

b!3

b!3

b!4

b!4

15

15

b!3

b!4

15

415

13.4

823

Apr.

15

*b!4

b!5

b!6

16

16

b!5

b!5

b!5

b!6

b!5

b!7

b!7

b!9

21

22

23 

24

26

27

30

34

39

44

46

49

47

51

55

49

-

808

26.9

1,600

May

47

44

41

*48

64

85

100

116

116

125

144

162

146

118

100

88

96 

105

127

166

173

148

144

144

192

321

510

*620

538

484

425

5,737

184

11,380

June

311

227

217

248

287

362

*425

472

484

420

348

415

430

390

442

557

571 

538

520

508

496

454

405

366

358

366

358

353

335

295

-

11,958

399

23,720

July

259

252

241

230

208

193

199

188

170

152

142

130

120

112

106

*100

102 

104

118

104

110

104

90

82

76

77

74

72

67

68

68

4,118

133

8,170

Aug.

68

90

118

136

112

98

85

74

65

60

55

49

*46

42

4O

38

37 

36

35

37

37

35

35

44

40

35

35

39

47

72

57

1,797

58.0

3,560

Sept.

48

44

40

*38

36

36

34

32

31

30

28

28

27

26

26

25

24 

24

24

24

26

25

24

24

23

23

22

23

34

31

-

880

29.3

1,750

Calendar year 1950 : Max 492 Mln 12 Mean 74.7 Ac-ft 54,070

Water year 1950-51 : Max 620 Mln n Mean 77.5 Ac-ft 56,110

Peak discharge (base'. 700 efs). May 27 ,. 

(3.18 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ic<.

p.m.) 799 cfs (3.11 ftl; June 16 (8 p.m.) 862 cfs
SAN JUAN RIVER BASIN 319

Animas River above Tacoma, Colo.

Location.--Lat 37°34'10", long. 107°46'40" (revised), in sec. 8, T. 38 N., R. 8 W., on

 left bank 0.8 mile upstream from Tank Creek, 2.4 miles downstream from Cascade Creek, 

 and 3.3 miles north of Tacoma.

Drainage area.--348 sq mi.

Records available.--January 1946 to September 1951.

Page.--Water-stage recorder. Altitude of gage is 7,520 ft (from topographic map).

Average discharge.--5 years, 581 cfs.

Extremes. Maximum discharge during year, 4,760 cfs May 27 (gage height, 6.65 ft); minimum

 daily, 60 cfs Feb. 1.

1946-51: Maximum discharge, 9,500 cfs June 18, 1949 (gage height, 8.86 ft), from 

rating curve extended above 5,700 cfs; minimum daily, 60 cfs Jan. 4, 1949, Feb. 1, 1951. 

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good except those for periods of ice effect, which are fair. Most of

 flow of Cascade Creek and Little Cascade Creek diverted around station (11,840 acreft in water year 1950-51) for power development.

Cooperation.--Records of diversion furnished by Western Colorado Power Co.

Rating table, water year 195O-51, except periods of ice effect 

(gage height, in feet, and discharge, In cubic feet per second)

2.2 69 4.0 890

2.6 140 5.0 1,850

3.0 280 6.1 3,660

5.5 560

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

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

Ac-ft

Oct.

218

224

214

*200

187

178

168

160

157

154

148

143

145

140

140

143

138

156

151

129

127

127

125

122 

122

122

118

118 

114

113

*114

4,573

148

9,070

Nov.

114

115

105

107

105

105

107

105

102

70

80

90

100

116

111

105

100

109

111

105

105

102

95

97

100

100

97

95 

97

100

-

5,048

102

6.O5O

Dec.

104

95

80

105

95

*75

100

110

113

100

109

109

104

109

105

102

95

100

98

104

98

94

100

110 

105

100

95

90 

95

100

100

5,099

100

6,150

Jan.

100

95

90

85

*95

90

80

85

90

90

95

100

95

90

85

90

95

100

100

95

95

95

100

100 

95

90

95

102 

98

90

80

2,885

95.1

5,720

Feb.

60

70

80

90

90

85

85

90

90

95

95

97

92

80

80

85

90

92

94

81

87

90

94

87 

90

82

82

*75

_

-

2,408

86.0

4,780

Mar.

70

80

70

80

90

95

loo

84

100

98

94

84

95

100

98

107

97

90

90

102

105

111

107

111 

125

146

158

155 

120

129

127

5,186

103

6,320

Apr.

118

116

127

*151

151

143

138

138

143

151

151

138

146

181

221

253

285

285

271

266

266

285

570

446 

545

560

505

505 

550

290

-

6,855

228

13,600

May

262

24O

232

*315

494

632

662

729

687

792

869

930

841

656

554

494

500

572

687

938

1,010

827

778

792 

1,190

2,100

3,170

5.570 

2,960

*2,510

2,210

33,203

1,071

65,86O

June

1,530

1,120

1.060

,140

,190

* ,490

,700

,970

,060

,860

,510

,660

,680

,470

,530

,220

.460

,330

,120

,030

,960

,730

,480

,570 

,290

,560

,500

,270 

,23.0

,100 -

48,220

1,607

95,640

July

962

914

890

840

771

687

694

687

652

596

*554

556

482

458

454

410

404

404

452

452

500

470

404

565 

340

335

340

560 

540

530

520

16,364

528

32,460

Aug.

*510

428

596

715

638

512

428

355

510

280

258

232

214

197

187

178

174

171

165

174

184

190

181

224 

271

218

200

210 

380

806

512

9,898

519

19,630

Sept.

375

305

258

232

2O7

200

*197

2OO

184

171

165

160

154

151

146

140

136

156

133

131

156

158

155

129 

125

122

118

120 

174

207

-

5,185

173

10, 280

Calendar year 195O: Max 2,450 Mln 70 Mean 398 Ac-ft 288,400

Water year 1950-51: Max 3,570 Mln 60 Mean 581 Ac-ft 275,600

Peak discharge (base. 5.600 efa).--May 27 (11 P.m.) 4,760 cfs (6.65 ft). 

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 1O-13, 16-17, Dec. 3-8, Dec. 23 to Jan. 27, 

Jan. 50 to Feb. 11, Feb. 15-17, Feb. 27 to Mar. 6.
320 SAN JUAN RIVER BASIN

Hermosa Creek near Hermosa, Colo.

Location.- -La t 37°25'30", long. 107°50'20" (revised), in NW£ sec. 3, T. 36 N. , R. 9 W. , 

on right bank 20 ft downstream from private bridge, 1 mile northwest of Hermosa, and 

2 miles upstream from mouth.

Drainage area. 172 sq mi.

Records available. --November 1911 to June 1912, April 1913 to September 1914 (fragmentary),

 ana uctooer iy40 to September 1951 in reports of Geological Survey. April 1913 to September 1914, April 1920 to September 1928 (no winter records prior to 1928), and October 1940 to September 1951 in reports of State engineer. Figures for flood of May and 

June 1920, published in reports of State engineer, are considered too high from information by his office.

Gage. Water-stage recorder. Datum of gage is 6,705.88 ft above mean sea level, datum of

 T929. Prior to September 1914, staff gage, and April 1920 to September 1928, waterstage recorder at sites half a mile upstream at different datums.

Average discharge. 11 years (1940-51), 145 cfs.

Extremes. --Maximum discharge during year, 588 cfs May 27 (gage height, 2.46 ft); minimum 

ooserved, 4.1 cfs (discharge measurement) Dec. 6.

1920-28, 1940-51: Maximum discharge , 3,040 cfs Sept. 12, 1927 (gage height, 8.50 

ft, from floodmarks, site and datum then in use), by slope-area method; minimum observed that of Dec. 6, 1950.

Remarks . Records good except those for periods of ice effect, which are fair. 

ror irrigation of a few hundred acres above station.

Diversions

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 22

0.7 9.0

.9 16

1.1 32

Jan. 23 to Sept. 30

0.8 

1.0 

1.3

1.5

1.8 165

2.0 255

2.4 540

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*31

?S

22

20

20

20

20

20

19

17

1616-

16

16

16

16

16

16

16

20

19

16

16

16

17

17

16

16

*16

16

569

18.4

1,130

Nov.

16

16

16

15

15

15

16

15

15

b9.5

blO

bll

b!2

14

14

b!4

15

b!5

16

17

17

17

16

15

16

16

16

16

16

b!6

-

447.5

14.9

888

Dec.

TB- 17

b!4

b!6

b!4

*blO bT3~

b!6

16

b!5

b!6

16

b!5

15

16

15

b!5

b!6

blS

b!6

b!5

15

15

b!6

b!6

16

15

16

b!5

15

b!5

471

15.2

934

Jan,

b!6

bI5

b!5

b!5

*b!6

b!3

bll

bll

b!2

b!2

b!2

b!3

b!3

b!3

b!2

b!3

b!4

b!4

b!4

b!4

b!4

b!5

15

13

13

13

b!2

13

b!2

b!2

bll

411

13.3

815

Feb.

b9.0 bil 

b!3

b!4

*b!4

b!3

13

13

13

13

15

T6- 16

b!4

b!4

b!4

15

15

15

b!4

b!4

15

14

14

13

*b!4

13

b!3

_

_

-

384.0

13.7

762

Mar.

b!3

bTI

13

13

b!4

b!5

b!5

15

17

18

17

b!6

18

20

23

b25

25

24

b21

23

24

30

27

27

31

38

38

36

30

32

30

702

22.6

1,390

Apr.

26

tt

29

*39

35

33

33

34

33

39

33

35

38

50

60

68

73

70

65

63

63

66

84

~8T 104

80

68

66

73

*66

-

1,634

54.5

3,240

May

62

57

54

75

131

181

177

181

169

173

173

177

162

146

140

134

137

156

193

230

250

220

197

201

261

392

484

*48T

438

392

350

6,581

212

13,050

June

 SIS 279

189

185

169

*177

177

185

185

169

159

156

146

134

131

137

146

146

134

126

120

102

88

80

71

63

60

56

53

49

-

4,087

136

8,110

July

46

TS

40

38

36

35

34

31

30

28

*28

27

26

28

26

26

28

28

26

26

28

26

26

28

26

26

26

33

30

26

24

929

30.0

1,840

Aug.

*34

57

5?

48

44

35

30

27

26

23

23

22

20

20

20

18

18

19

17

T9

*19

22

21

26

28

23

21

22

33

45

31

863

27.8

1,710

Sept.

26

T5

20

*19

18

17

16

17

16

15

15

15

14

14

13

13

13

13

13

13

14

15

14

14

14

13

12

T?

23

25

-

479

16.0

950

Calendar year 1950: Max 392 Mln 9.5 Mean 72.1 Ac-ft 52,230

Water year 1950-51: Max 484 Mln 9.0 Mean 48.1 Ac-ft 34,820

Peak discharge (base, 800 efs). No peak above base. 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
SAN JUAN RIVER BASIN 321

Animas River at Durango, Colo.

Location (revised). Lat 37°16'45", long. 107°52'25", in sec. 20, T. 35 N. , R. 9 W. , on 

lert DanK at western Colorado Power Co.'s plant at Durango, three-quarters of a mile 

upstream from Lightner Creek.

Drainage area.--692 sq mi.

Records available.--June 1895 to December 1905, January 1910 to December 1914, and October 

iad<3 to septemcer 1951 in reports of Geological Survey. June 1895 to December 1905 and 

December 1910 to September 1951 in reports of State engineer.

Gage. Water-stage recorder at present site since 1922. Datum of gage is 6,501.57 ft

above mean sea level, datum of 1929. Prior to 1922, water-stage recorder, chain, wireweight, or staff gages at several sites within a short distance at various datums.

Average discharge.--50 years (1895-1900, 1901-5, 1910-51), 894 cfs.

Extremes. Maximum discharge during year, 4,320 cfs May 28 (gage height, 5.27 ft); minimum 

 daily, 112 cfs Mar. 1.

1895-1900, 1901-5, 1910-51: Maximum discharge, 25,000 cfs Oct. 5, 1911 (gage height,

11 ft), from rating curve extended above 10,000 cfs; minimum daily, 50 cfs Dec. 22,

1917.

Remarks.--Records excellent above 300 cfs and good below except those for periods of ice 

errect or no gage-height record, which are fair. Diversions for irrigation of about 

4,000 acres above station. Natural regulation by many lakes and artificial regulation 

for power above station.

Revisions. W 764: Drainage area.

Rating tables, water year 1950-51, except periods of ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Sept. 2, 3)

Oct. 1-27, May 29 to Sept. 2 Oct. 28 to May 28, Sept. 3-30

1.5 158

2.0 316

2.5 560

3.0 950

4.0 2,130

5.0 3,720

1.5 102

2.0 220

2.4 375

3.0 778

3.5 1,300

4.0 2,010

5.0 3,720

6.0 5,810

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

271

312

301

293

286

274

260

253

236

242

236

223

*216

213

207

200

205

197

189

187

187

202

181

176

174

'2T52' 168

199

205

190

202

6,887

222

13,660

Nov.

188

196

193

188

199

*183

196

199

205

202

176

183

185

205

211

188

178

188

199

190

190

*196

193

165

169

174

160 T53"

176

176

-

5,634

188

11,170

Dec.

185

185

169

176

193

185

193

208

T§9

196

183

190

*193

193

196

193

185

162

185

183

178

169

165

172

153

140

T32

160

165

153

158

5,507

178

10,920

Jan.

153

151

151

165

172

174

ISO

*a!61

160

160

160

158

162

149

155

156

165

160

156

155

156

157

167

165

*158

153

149

156

142

169

162

4,873

157

9,670

Feb.

120

b!30

b!40

b!50

b!68

b!60

b!60

167

160

*153

162

165

162

149

120

T33" 118

146

144

140

118

124

129

129

129

131

122

120

_

_

-

3,949

141

7,830

Mar.

112

12U

120

116

140

149

144

146

*149

158

158

146

142

151

149

158

165

158

140

151

158

162

169

165

174

183

202 *T9"9~

193

185

196

4,858

157

9,640

Apr.

188

178

176

187

211

199

199

205

211

211

217

205

208

220

254

292

328

352

*347

347

342

347

375

468

135

414

397

375

402

408

8,714

290

17,280

May

397

352

352- 324

468

654

730

770

730

*794

858

960

960

794

676

605

578

605

691

909

1,140

1,070

899

858

1,090

1,980

*3,060

5.860

3,620

3,030

2,870

36,684

1,183

72,760

June

2,200

1,570

*1,260

1,260

1,250

1,490

1,640

1,960

2,050

2,120

1,680

1,630

1,780

1,600

1,440

1,960

2,550

2,350

2,270

2,280

1,900

1,910

1,500

1,600

1,350

1,560

1,350

1,280

1,230

1,120

50,940

1,698

101,000

July

950

980 56~$-

797

746

676

655

655

*655

602

572

543

515

488

477

461

450

*455

450

461

477

477

450

430

400

391

387

391

391

378

374

17,003

548

33,720

Aug.

370

415

526

620

706

602

532

466

*420

391

366

349

328

305

293

286

282

278

271

260

267

271

271

278

341

336

312

320

349

*608

634

12,053

389

23,910

Sept.

472

rrs

320

280

258

244

235

226

223

a210

202

*I96

190

188

188

a!82

alSO

176

178

181

176

178

183

178

176

176

174

169

155

205

6,491

216

12,870

Calendar year 1950 : Max 2,850 Mln 140 Mean 551 Ac-ft 399,200

Water year 1950-51 : Max 3,860 Mln 112 Mean 448 Ac-ft 324,400

Peak discharge (base, 4,000 cfs).--May 28 (7 a.m.) 4,520 cfs (5.27 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records; 

and records for nearby stations.

b Stage-discharge relation affected by ice.
322 SAN JUAN RIVER BASIN

Florida River near Durango, Colo.

Location.--Lat 37°20', long. 10V45', in sec. 4, T. 35 N. , R. 8 W. , on left bank just

 downstream from Red Creek and 9 miles northeast of Durango.

Drainage area.--96 sq mi, approximately.

Records available.--May to July 1899, April 1901 to October 1903, September 1910 to Sep-

 tember iyj.H, and October 1933 to September 1951 in reports of Geological Survey. May 

to July 1899, April 1901 to October 1903, September 1910 to September 1924, and April 

1927 to September 1951 in reports of State engineer.

Gage.--Water-stage recorder. Datum of gage is 7,301.88 ft above mean sea level, datum of

 T929. Prior to Mar. 26, 1-928, staff gages at several sites nearby at various datums. 

Mar. 26, 1928, to Sept. 9, 1934, water-stage recorder at site a quarter of a mile downstream at different datum.

Average discharge.--33 years (191Q-12, 1917-24, 1927-51), 117 cfs.

Extremes.--Maximum discharge during year, 887 cfs May 27 (gage height, 3.71 ft); minimum

 daily, 3.2 cfs Sept. 22.

1899, 1901-3, 1910-24, 1927-51: Maximum discharge observed, 4,640 cfs June 28, 1927 

(gage height, 4.50 ft, site and datum then in use); maximum gage height, 5.30 ft June 

19, 1949; minimum daily discharge, 0.4 cfs Feb. 15, 1918. 

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records good except those for periods of ice effect or no gage-height record,

 which are poor. Diversions for irrigation of about 160 acres above station.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, in feet, and discharge, In cubic feet P'.r second)

2.3 

5.8 

8.2

1.0

1.3

1.6 

2.0 

2.5 

3.0 

3.5

93

170

280

460

740

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

38

45

43

38

34

31

27

25

22

18

16

*14

14

14

14

14

14

14

14

12

11

9.6

9.2

8.7

8.2

8.2

8.2

 872 8.0

9.6

578.9

18.7

1,150

Nov.

8.0

6.0

6.3

6.5

6.8

*6.5

7.0

7.2

5.8

4.7

5.3

6.8

5.3

 578 4.7

5.4

6.3

6.0

8.2

777

*7.2

7.2

6.8

6.8

6.8

6.8

7.0

6.8

6.8

6.5

195.0

6.50

387

Dec.

6.5

675

6.0

6.0

6.0

6.0

5.5

5.0

5.0

5.0

5.0

5.0

4.5

4.5

*4.5

4.5

4.2

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

146.1

4.71

290

Jan.

(*)

4.0

(*)

124.0

4.0

246

Feb.

(*)

4.1

_

_

-

114.8

4.1

228

Mar.

4.0

470

4.0

4.0

4.5

5.0

5.5

6.0

*6.3

7.5

7.0

6.5

6.0

7.5

9.2

10

9.2

8.0

7.7

8.0

9.6

12

12

12

14

16

TS

15

*12

14

12

274.5

8.85

544

Apr.

10

9.6

14

16

15

16

16

15

14

16

13

13

13

14

15

16

18

20

20

*20

21

18

19

26

26

32

75

29

31

29

-

563.6

18.8

1,120

May

30

"S9 29

32

35

50

57

65

70

*81

90

100

104

95

86

73

68

68

81

119

*170

144

126

128

214

379

*584

686 555"

485

411

5,244

169

10,400

June

286

221

208

*223

223

263

301

316

304

289

230

208

206

193

204

243

234

234

216

202

189

168

140

120

109

102

95

84

75

66

-

5,952

198

11,810

July

60

52

46

43

35

*34

25

22

20

18

17

16

14

14

14

14

14

*14

13

15

15

14

14

12

12

13

9.6

11

13

14

14

641.6

20.7

1,270

Aug.

15

30

35

70

78

55

43

36

27

21

18

15

14

11

8.0

6.8

6.0

 575 5.8

6.5

7.2

7.7

9.2

13

22

18

*18

20

39

*148 ~5T

900.7

29.1

1,790

Sept.

6249"

38

29

22

20

19

18

17

16

14

*12

8.0

6.3

5.6

5.4

5.6

4.?

4.?

3.?

3.3

3.?

37T

4.7

4.F

4.f

4.4

4.4

6.8

17

-

415.8

13. f

82?

Calendar year 1950 : Max 384 Mln 1.2 Mean 56.4 Ac-ft 40,850

Water year 1950-51 : Max 686 Mln 3.2 Mean 41.5 Ac-ft 30,060

Peak discharge (base, 550 cfs). May 27 (11:30 p.m.) 887 cfs (3.71 ft).

* Discharge measurement .made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 28 to Dec. 14. No gage-height record Dec. 15 

to Mar. 8, Mar. 11-13 (stage-discharge relation affected by ice during most of periods), May 4-9, 

July 19-22, Aug. 1-8; discharge estimated on basis of 4 discharge measurements, weather records, and 

diversion records below station at Florida and Farmers Canals.
SAN JUAN RIVER BASIN

Anlmas River near Cedar Hill, N. Mex.

Location. Lat 37°02 I 15", long. 107°52'25", in seo. 7, T. 32 N., R. 9 W., on right bank 

tnree-quarters of a mile downstream from Florida River, 2.5 miles upstream from Colorado-New Mexico State line, and 8.5 miles north of Cedar Hill.

Drainage area.--1,090 sq mi, approximately.

Records available.--November 1933 to September 1951.

Gage.--Water-stage recorder. Altitude of gage Is 5,960 ft (from topographic map) Nov. 

12, 1933, to Sept. 14, 1937, at datum between 1.52 and 1.36 ft higher. Sept. 15, 1937, 

to Sept. 30, 1946, at datum 1.36 ft higher

Average discharge.--17 years (19S»-51), 969 cfs.

Extremes.--Maximum discharge during year, 4,690 cfs May 28 (gage height, 7.26 ft); minimum 

daily, 136 cfs Mar. 2.

1933-51: Maximum discharge, 13,100 cfs June 19, 1949 (gage height, 11.45 ft); minimum daily, 90 cfs Jan. 21, 1935.

Maximum flood known occurred Oct. 5 or 6, 1911.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are poor. Discharge measurements generally made three times a month. Diversions 

for irrigation of about 20,000 acres above station. During water years 1944-49, Twin 

Rocks Canal diverted above station for irrigation below.

Rating table, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1 to May 28)

3.5 126

3.7 178

3.9 255

4.2 415

4.5 630

5.0 1,100

5.5 1,690

6.0 2,400

7.0 4,190

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

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.

367 

385

J55

367

345

340

330

325

310

315

310

305

290

280

275

255

255

234

230

226

234

238

230

226

226

221

217

206 

202

2To~ 199

8,538

275

16,930

Nov.

192 

TS8" 185

192

196

199

202

210

213

213

221

210

213

226

247

217

210

221

260

265

242

242

230

210

199

202

202

213 

217

217

-

6,454

215

12,800

Dec.

213 

217

213

202

213

b215

b205

234

226

221

221

226

238 230"

226

221

217

206

202

210

217

210

202

202

188

185

178 T99" 

196

206

196

6,535

211

12,960

Jan.

192 

188

210

b210

185

172

188

213

217

192

206

206

192

185

1S6

b!60

bT§0"

b200

213

199

206

185

185

182

175

182

188

188 

188

210

226

6,019

194

11,940

Feb.

b200 

b!60

b210

b230

b23o"

b230

a220

a210

202

185

185

192

188

170

153

140

145

156

161

164

148

143

148

145

145

145

148

145

_

-

4,901

175

9,720

Mar.

140 

136

T43

138

148

156

156

158

161

164

167

167

153

156

161

170

172

170

164

158

167

170

175

172

178

188

210

221 

226

230

238

5,313

171

10,540

Apr.

251 

221

210

206

237)

230

226

217

221

213

226

213

217

217

247

305

350

373

373

367

373

373

391

494

515

422

422

373 

409

441

9,326

311

18,500

May

428 

379

350

ysr

467

774

846

940

950

960

1,050

1,130

1,160

1,010

855

738

684

720

864

1,160

1,370

1,300

1,120

1,040

1,290

2,200

3,420

4,200 

4,090

3,520

3,330

42,706

1,378

84,710

June

2,640 

1,960

1,550

1,510

1,520

1,760

2,030

2,320

2,480

2,480

2,100

1,960

2,100

1,890

1,760

2,100

2,720

2,720

2,480

2,480

2,320

2,320

1,960

1,820

1,620

1,620

1,590

1,520 

1,480

1,580

-

60,190

2,006

119,400

July

1,250 

1,120

1,080

1,000

920

819

783

785

738

666

606

590

566

515

487

467

460

467

454

467

467

474

460

448

597

567

355

567 

567

555 3"5S~

18,630

601

56,950

Aug.

579 

561

536

695

837

729

606

494

441

597

561

525

500

270

242

236

231

213

213

199

202

210

231

255

305

535

500

510 

567

632

837

12,007

587

25,820

Sept.

598

m

422

579

540

510

295

280

270

247

221

215

206

199

199

132

188

185

182

182

182

182

188

182

167

164

156

155 

T57

247

7,590

246

14,660

Calendar year 1950 : Max 3,050 Mln 178 Mean 627 Ac-ft 454,200

Water year 1950-51 : Max 4,200 Hin 136 Mean 515 Ac-ft 372,900

Peak dischaharge ( 

-height

base, 4.000 efs). May 28 (11 a.m.) 4,690 cfs (7.26 ft).

a No gage-height record; discharge computed on basis of recorder trace, weather records, and records 

for station at Farmington.

b Stage-discharge relation affected by ice.
324 SAN JUAN RIVER BASIN

Anlmas River at Farming-ton, N. Mex.

Location. Lat 36°43'20", long. 108°12'00", in SE£ sec. 16, T. 29 N., R. 13 W., on left 

bank at bridge on State Highway 17, 0.6 mile southeast of Farmington,and 1.3 miles 

(revised) upstream from San Juan River.

Drainage area. 1,360 sq mi, approximately.

Records available.--June 1904 to October 1905 (published as near Farmington), September

 19iy to December 1914, and October 1930 to September 1951 in reports of Geological 

Survey. June 1904 to October 1905 (published as near Farmington) and September 1912 

to December 1931 in reports of State engineer.

Gage. Water-stage recorder. Altitude of gage is 5,278 ft (from bridge-profile plans).

 Tune 1904 to October 1905, chain gage at old bridge about a quarter of a mile upstream 

at different datum. September 17, 1912, to October 4, 1938, water-stage recorder 0.6 

mile downstream at different datum.

Average discharge.--38 years (1912-25, 1926-51), 1,002 cfs.

Extremes.--Maximum discharge during year, 4,560 cfs May 28 (gage height, 5.26 ft); minimum

 daily, 19 cfs Aug. 19.

1930-51: Maximum discharge, 12,800 cfs May 14, 1941 (gage height, 8.9 ft, from graph 

based on gage readings), from rating curve extended above 7,700 cfs by logarithmic plotting; minimum daily, 5.4 cfs Sept. 1, 1950.

Maximum flood known occurred Oct. 5, 1911; stage was about 16.5 ft as determined from 

a field study made in 1949. The flood of Sept. 6, 1909, peaked at about 19,000 cfs 

(gage height, 11.1 ft, (1904-5 site and datum).

Remarks.--Records good except those for December through February, which are fair. Discharge measurements generally made once a week. Diversions for irrigation of about 

30,000 acres above station. Records of chemical analyses, water temperatures, and sediment loads for the water year 1951 are given in Water-Supply Paper 1200.

Rating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-28)

1.1 

1.3 

1.5 

1.7 

2.0

146

260

2.5 

3.0 

3.5 

4.0 

5.0

520

910

1,450

2,150

4,010

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

330

330

375 

375

365

350

335

330

320

296

288

272

260

240

236

232

228

236

220

212

196 

216

240

232

200

196

188

170

153

153

140

7,914

255

15,700

Nov.

127

115

118 

130

140

146

146

143

137

134

146

149

166

177

204

216

204

196

196

232

244 

236

236

232

224

208

208

196

200

208

-

5,414

180

10, 740

Dec.

204

212

216 

208

212

220

208

236

228

228

216

204

204

212

220

220

224

216

208

208

212 

200

204

204

2CT4

200

200

196

515

210

216

6,560

212

13,010

Jan.

220

220

204 

192

200

196

200

196

192

216

196

20O

212

196

216

177

150

185

196

204

188 

188

188

188

192

208

204

204

208

216

228

6,180

199

12,260

Feb.

210

180

166 

236

252

260

248

248

236

212

208

220

200

188

173

163

156

177

188

192

200 

166

163

173

188

188

196

177

_

-

5,564

199

11,040

Mar,

170

153

140 

149

173

180

188

184

180

184

180

188

192

177

180

184

177

160

160

153

160 

173

184

192

196

200

220

232

228

216

184

5,647

182

11,200

Apr.

184

180

165 

146

140

149

146

156

143

140

118

115

93

77

77

85

87

115

149

170

160 

153

146

163

240

228

208

177

134

200

-

4,444

148

8,810

Bay

216

208

163 

104

109

212

508

653

684

660

716

829

928

892

732

604

508

478

508

639

1,010 

1,130

937

838

856

1,540

2,820

3,800

4.010

3,490

3,190

33,972

1,096

67,380

June

.640

,980

,530 

,310

,330

,350

,620

,920

,090

,150

,940

,64O

,700

,660

,490

,590

,150

,310

,230

,230

,100 

,080

,810

,610

,450

,350

,330

,250

1,180

1,070

-

52,090

1,736

103, 300

July

964

820

740 

692

639

576

478

490

520

460

406

355

296

305

280

272

264

252

212

204

180 

180

188

188

204

146

137

112

109

112

104

10,885

351

21,590

Aug.

112

153

281 

555

660

700

534

390

284

200

143

112

93

73

75

42

29

27

19

22

22 

36

46

77

127

121

127

115

166

260

707

6,308

203

12,510

Sept.

562

390

330 

260

196

143

130

101

95

82

73

68

42

35

32

30

32

30

29

27.

28 

35

82

109

107

98

87

85

98

121

-

3,537

118

7,020

Calendar year 1950: Max 2,710 Mln 5.4 Mean 532 Ac-ft 385,400

Water year 1950-51: Max 4,010 Mln 19 Mean 407 Ac-ft 294,600

Peak discharge (base. 5.000 efs).--May 28 (6:30 p.m.) 4,560 cfs (5.26 ft).
SAN JUAN RIVER BASIN 325

San Juan River at Farmington, N. Mex.

Location. Lat 36°43'25", long. 108°13'30", in SE£ sec. IV, T. 29 N., R. 13 W., on left

 bank 360 ft downstream from highway bridge, 4,000 ft downstream from Animas River, and 

1 mile west of Farmington.

Drainage area.--7,240 sq mi, approximately.

Records available.--June 1904 to September 1906, September 1912 to December 1914, and Oc-

 tober 1930 to September 1951, in reports of Geological Survey. September 1912 to July 

1918 and November 1921 to December 1931 in reports of State engineer.

Gage.--Water-stage recorder. Altitude of gage is 5,230 ft (from river-profile map). June

 T9. 1904, to May 10, 1906, wire-weight gage l| miles downstream at datum about 15 f.t 

lower. May 11 to Sept. 22, 1906, chain gage, and Sept. 19, 1912, to July 18, 1918, 

staff gage, at site of old bridge half a mile upstream at different datums. Nov. 1, 

1921 to Sept. 12, 1932, water-stage recorder at datum 1.04 ft higher, and Sept. 12, 

1932, to Nov. 18, 1933, water-stage recorder at datum 0.53 ft higher, at site 360 ft upstream.

Average discharge.--28 years (1922-35, 1926-51), 2,435 cfs.

Extremes.--Maximum discharge during year, 8,900 cfs, May 28 (gage height, 4.54 ft); mini-

 mum daily, 108 cfs Aug. 19, 21. '

1930-51: Maximum discharge, 32,800 cfs Sept. 28, 1935 (gage height, 8.0 ft, estimated), from rating curve extended above 18,000 cfs; minimum daily, 2V cfs Aug. 22, 1939. 

Maximum flood known occurred Oct. 6, 1911.

Remarks --Records good except those for periods of ice effect or no gage-height record,

 wRTch are poor. Discharge measurements generally made once a week. Diversions above 

station for irrigation of about 86,000 acres, 4,000 acres of which are below station.

Revisions.--W 1119: Drainage area.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft^

Oct.

670

680

970

934

767

680

610

572

536

460

452

444

436

420

406

392

378

364

357

338

338

344

371

350

326

314

308

302

296

302

296

14,413

465

28,590

Nov.

285

285

275

280

270

265

260

255

250

240

255

224

224

232

290

392

371

326

332

371

452

413

385

378

357

357

350

350

357

364

-

9,445

315

18,730

Dec.

357

392

378

378

350

326

344

385

436

444

484

484

468

500

500

500

500

484

452

460

452

436

420

a400

a400

a420

a410

a390

380

370

370

13,070

422

25,920

Jan.

440

430

380

400

390

380

360

360

380

4OO

440

450

490

390

380

370

320

420

460

476

436

452

452

452

436

428

413

428

452

484

436

12,985

419

25,760

Feb.

400

350

380

420

518

484

492

500

536

509

509

527

545

500

476

436

413

436

452

468

444

399

364

338

378

392

392

385

_

-

12,443

444

24,680

Mar.

385

344

314

344

371

357

428

406

420

460

581

723

660

581

590

640

650

640

554

484

468

492

563

640

590

600

712

822

800

701

581

16,901

545

33,520

Apr.

572

554

492

460

518

640

630

660

600

590

554

554

428

392

413

545

620

690

778

767

778

855

877

994

1.240

1,100

1,070

922

822

934

-

21,049

702

41,750

May

970

899

767

630

670

1,020

1,700

2,OOO

2,150

2,060

2,120

2,180

2,490

2,530

2,080

1,770

1,590

1,430

1,430

1,680

2,570

3,210

2,830

2,770

3,000

4,390

6,140

7,660

7,900

7,200

6,550

86,386

2,787

171,300

June

6.140

5,030

3,780

3,350

3,140

2,940

3,330

3,700

4,100

4,100

3,960

3,400

3,330

3,230

3,070

3,100

3,650

3,960

3,830

3,600

3,480

3,400

3,050

2,550

2,270

2,050

1,970

1,810

1,660

1.4BO

-

98,460

3,282

195,300,

July

1.550

1,150

1,030

946

888

811

660

745

789

701

630

554

399

332

308

290

265

240

216

208

212

240

265

228

228

200

200

182

182

172

156

14,777

477

29,310

Aug.

159

260

832

1,270

1,650

1,530

1,080

822

590

452

326

245

208

176

162

141

120

115

108

110

108

110

165

616

1,580

1,250

670

509

500

822

2.150

18,836

608

37,360

Sept.

1.560

1,040

800

660

536

413

364

320

290

270

240

220

200

186

172

165

156

153

150

147

144

138

141

144

138

138

135

138

147

172

-

9,477

316

18,800

Calendar year 1950: Max 5,940 Mln 224 Mean 1,258 Ac-ft 910,700

Water year 1950-51: Max 7,900 Mln 108 Mean 899 Ac-ft 651,000

Peak discharge (base. 8.000 ofs). May 28 (6:40 p.m.) 8,900 cfs (4.54 ft), 

a No gage-height recordj discharge estimated on basis of weather records and records for stations 

near Blanco and at Ship Rock.

Note. Stage-discharge relation affected by Ice Dec. 29 to Jan. 18, Feb. 1-4.

256684 O - 53 - 22
326 SAN JUAN RIVER BASIN

La Plata River at Hesperus, Colo.

Location.--Lat 37°17', long. 108°02', in sec. 14, T. 35 N., R. 11 W., on right bank a short 

distance upstream from U. S. Highway 160 and an eighth of a mile northwest of Hesperus.

Drainage area.--37 sq mi, approximately.

Records available.--June to August 1904, May to December 1905, April to August 1906, August 

to LJecemDer lylO, and October 1933 to September 1951 in reports of Geological Survey. 

June to August 1904, April to August 1906, August to December 1910, and May 1917 to 

September 1951 in reports of State engineer.

Gage.--Water-stage recorder. Datum of gage is 8,104.71 ft above mean sea level, datum of 

192°. Prior to May 25, 1927, staff gage at several sites nearby at different datum. 

May 25, 1927, to Sept. 11, 1938, water-stage recorder at site 60 ft downstream, and 

Sept. 12, 1938, to Sept. 30, 1941, at present site at datum 1.00 ft higher.

Average discharge.--34 years (1917-51), 46.8 cfs.

Extremes.--Maximum discharge during year, 520 cfs May 27 (gage height, 2.80 ft); minimum 

daily, 3.2 cfs Dec. 28, Feb. 2.

1904-6, 1910, 1917-51: Maximum discharge, 1,880 cfs Sept. 22, 1941 (gage height, 

4.30 ft), from rating curve extended above 620 cfs on basis of slope-area determinatior 

of peak flow; no flow Apr. 4, 1906.

Maximum flood known occurred Oct. 5, 1911.

Remarks,--Records good except those for periods of ice effect or no gage-height record, 

which are fair. One diversion above station for irrigation of land along Cherry Creek 

below station.

Rating tables, water year 1950-51, except period of Ice effect

(gage height, In feet, and discharge, In cubic feet per aecond)

(Shifting-control method used May 25-28)

Oct. 1 to May 26 May 27 to Sept. 30

1.4 

1.6

2.3 

2.5 

2.8

118

178

290

2.0 

2.5 

3.0

110

285

500

Discharge, In cubic feet per aecond, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

10

9.2

*9.7

9.7

9.2

10

10

9.7

9.2

9.2

8.3

8.3

9.2

8.8

8.3

7.9

7.9

6.6

7.4

7.4

7.0

7.0

*7.0

6.6

6.6

6.6

6.2

5.8

5^

254.6

8.21

505

Nov.

5.8

5.4

5.0

5.4

5.4

5.4

5.8

*6.2

6.2

5.8

5.8

5.8

5.8

5.8

5.4

4.6

3,1

3.8

5.0

*6.6

6.6

6.6

6.6

*6.2

5.8

5.8

5.8

5.8

5.4

5.0

-

168.4

5.61

334

Dec.

5.0

b4.6

4.1

6.0

8.4

*8.0

8.2

8,8.

6.4

5.2

5.5

*5.8

5.1

5.5

5.7

5.1

4.6

4.6

5.1

5.4

5.3

4.7

4.4

5.2

4.7

4.7

4.0

3.2

4.2 3.7'

4.0

165.2

5.33

328

Jan.

4.5

4.4

4.0

4.2

5.5

4.8

4.0

4.2

4.5

4.2

4.3

4.5

4.7

4.3

3.8

4.1

4.4

*4.3

4.2

4.0

4.0

4.0

4.2

4.1

4.0

4.2

4.5

4.4

4.1

3.4

3.9

131.7

4.25

261

Feb.

3.7

3.2

3.4

3.7

4.1

4.5

*4.6

4.7

5.0

5.4

6.2

LA

5.6

4.2

4.5

4.6

4.8

4.9

4.9

4.5

4.7

5.0

5.4

4.8

4.8

4.8

4.7

4.5

_

_

-

132.3

4.72

262

Mar.

4.2

4.6

4.3

4.5

4.8

5.2

*5.5

6.0

7.0

7.8

6.6

5.6

5.8

6.6

7.0

7.2

6.5

5.4

5.0

5.7

*6.3

7.8

7.2

8.2

11

13

12

11

10

13

12

226.8

7.32

450

Apr.

11

*15

16

18

17

16

18

19

*20

21

*20

20

20

20

20

21

33

*36

36

36

34

35

45

57

*51

48

40

*37

38

35

-

853

28.4

1,690

May

3?.

27

25

28

40

79

*85

90

*90

95

102

*113

97

81

72

57

*40

33

44

81

108

83

74

*81

196

*275

*383

388

269

202

*160

3,530

114

7,000

June

105

*72

*66

94

101

*134

128

119

*119

105

92

103

96

74

52

*62

72

76

74

*61

48

35

30

*35

64

61

55

50

46

46

-

2,275

75.8

4,510

July

40

34

*31

31

28

24

23

22

22

*21

20

18

18

18

19

18

18

16

*15

15

16

16

17

*18

17

17

17

17

15

15

15

631

20.4

1,250

Aug.

14

15

18

28

.29

*23

21

20

19

17

16

15

14

12

*11

11

11

11

10

9.0

9.0

9.0

*8^

9.5

9.0

8.5

8.5

10

10

11

15

432.0

13.9

857

Sept.

11

17

15

*13

12

10

9.5

9.5

9.5

9.0

8.0

*6.5

6.5

7.5

7.0

6.5

6.5

6.5

6.0

6.0

6.0

7.0

7.0

*6.0

5.5

5.0

LJ. *4.7

6.0

6.0

-

246.4

8.21

489

Calendar year 1950: Max 205 Mln 3.0 Mean 27.1 Ac-ft 19,620

Water year 1950-51 : Max 388 Mln 3.2 Mean 24.8 Ac-ft 17,940

Peak discharge (base. 230 efs). May 27 (9 a.m.) 520 cfs (2.80 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 5, 19, Dec. 3 to Apr. 1 (stage-discharge relation affected by 

Ice during most of periods), Apr. 4-8; discharge estimated on basis of 6 discharge measurements,

weather* T'^nnfris. anri T^>p.rtTvlH fi-tT» noar»>nr nt-.af.-1 r»n« .

, . - 

weather records, and records for nearby stations
SAN JUAN RIVER BASIN 

La Plata River at Colorado-New Mexico State line

327

Location.--Lat 37°00', long. 108°11', in see. 10, T. 32 N., R. 13 W., on right bank at 

Colorado-New Mexico State line and 3 miles north of Pendleton, N. Mex.

Drainage area. 331 sq mi.

Records available.--October 1933 to September 19S1 in reports of Geological Survey. February I9au to September 1951 in reports of Colorado State engineer.

Gage.--Water-stage recorder. Datum of gage is 5,975.15 ft above mean sea level, datum of 

 T929. Prior to Oct. 5, 1927, at site 1,300 ft upstream at different datum. Oct. 5, 

1927, to Mar. 16, 1934, at datum 0.26 ft higher.

Average discharge.--31 years, 36.3 cfs.

Extremes.--Maximum discharge during year, 211 cfs Sept. 30 (gage height, 2.40 ft); no flow

1920-51: Maximum discharge, 4,750 cfs Aug. 24, 1927 (gage height, 11.36 ft), from 

rating curve extended above 710 cfs on basis of slope-area determination of peak flow; 

no flow at times in many years.

Remarks.--Records good above 10 cfs and fair below except those for periods of no gageheight record, which are poor. Diversions above station for irrigation of about 15,000 

acres, mostly above station.

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Dec. 8-17, Mar. 12)

Oct. 1 to Feb. 1, 

June 6 to Sept. 30 Feb. Z to June 5

0

1.0 

2.0 

3.0

9.0

0.9 

1.0 

1.5 

2.0

69

134

.7 5.9

1.0 

1.4 

1.9

18

51

109

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

23

30

31

Total

Mean

Ac- ft

Oct.

5.1

5.1

5.1

4.2

*4.2

3.9

379

3.9

4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.8

5.4

5.7

«5T7

5.4

4.8

5.1

5.1

5.1

*5.1

5.4

5.1

5.1

4.8

5.1

5.1

147.6

4.76

293

Nov.

5.4

376

4.8

5.1

5.1

5.1

3.9 *2.8

2.5

2^5

2.5

3.0

3.0

2.8

3.3

3.3

2.9

2.8

3.0

*2.8

3.0

4.2

4.2

*4.2

4.2

4.2

4.2

4.2

5.1

5.1

-

112.8

3.76

224

Dec.

5.4

4.8

3.9

6.0

478

*3.0

5.1

2.4

2.1

2.0

2.0

*2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.7

2.6

*2.8

2.7

4.5

6.0

5.6

5.0

4.0

4.8

4.0

4.4

106.6

3.44

211

Jan.

5.2

4.2

5.0

8.0

*9.5

7.5

6.0

5.2

5.6

5.0

5.2

5.4

5.6

5.0

4.5

*4.0

3.4

*3.0

3 . 2

3.6

4.0

4.3

4.7

5.0

6.0

7.8

6.9

6.3

6.3

6.9

4.5

166,8

5.38

331

Feb.

2.8

3.8

5.0

6.2

7.6

8.4 *g.s *S7I

7.3

6.2

6.2

6". 2

5.9

4.4

3.2

4.0

*4.2

4.6

6.2

5.7

5.5

5.1

4.8

4.0

3.6

*3.6

2.6

2.4

_

_

-

147.2

5.26

292

Mar.

.4

.4

.2

.O

 2

.2

* .4

.8

.7

.6

.7

* .7

.4

1.1

1.0

.8

.8

.9

.6

.4

*.3

.2

.2

.1

0

0

0

0

0

0

0

45.1

1.45

89

Apr.

0

<5

0

/°'o

1.0

1.4

1.2

*1.3

2.6

*4.6

5.3

5.9

7.0

7.0

7.0

7.0

*10

18

29

24

22

22

31

*38

32

30

25

29

37

-

398.3

13.3

790

May

31

*28

22

14

11

25

*92

105

*112 T0~8"

102

*101

91

91

86

75

29

1.3

0

t5

0

0

0

0

0

0

0

33

46

62

*106

1,371.2

44.2

2,720

June

84

63

*51

60

92

*107

~ST 108

*97

93

76

80

80

69

3.3

O

<5

0

0

0

0

o

0

0

4.8

27

31

29

28

24

-

1,304.1

43.5

2,590

July

23

*21

19

17

12

.3

0

5

0

0

0

0

0

0

0

0

0

0

*.6

0

.5

0

0

*.l

.6

.4

.7

0

O

0

1.4

96.6

3.12

192

Aug.

0.9

2.3

11 "S.4

11

*4.8

3.0

2.5

*2.0

1.9

1.6

1.0

.2

0

<5

0

0

.6

.6

.8

.8

1.3

*1.4

.8

.8

.4

.3

.8

2.2

2.1

1.6

70.1

2.26

139

Sept.

1.3

1.1

.8

*.9

1.1

1.0

1.0

1.0

1.0

.6

.9

* 5

76

.5

.5

.5

.5

.6

.6

.5

.7

.7

.9

*.8

.8

.9

1.0

1.2

2.6

27

-

52.1

1.74

103

Calendar year 1950: Max 256 Mln 0 Mean 17.2 Ac-ft 12,440

Water year 1950-51: Max 112 Mln 0 Mean 11.0 Ac-ft 7,970

Peak discharge (base, 500 cfs). No peak above base.

* Discharge measurement made on this day.

Note.--Ho gage-height record Dec. 25 to Jan. 25, Feb. 2-6 (stage-discharge relation affected by ice 

during most of periods); discharge estimated on basis of 3 discharge measurements, weather records, 

and records for nearby stations.
328 SAN JUAN RIVER BASIN

La Plata River near Farmington, N. Mex.

Location.--Lat 36°44'30", long. 108°14 ! 45", in SW£ sec. 7, T. 29 N., R. 13 W., on right 

bank at downstream end of old concrete bridge abutment, 40 feet upstream from bridge 

on U. S. Highway 550, 1,800 ft upstream from mouth,and 2-| miles northwest of Farmington.

Drainage area.--583 sq mi.

Records available. March 1938 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 5,215 ft (from river-profile map).

Average discharge.--13 years, 32.2 ofs.

Extremes.--Maximum discharge during year, 315 cfs Sept. 30 (gage height, 4.19 ft); maximum gage height, 4.31 ft Jan. 23 (ice jam); no flow for many days.

1938-51: Maximum discharge and gage height not determined; no flow for long 

periods.

Remarks. Records, fair except those for November through February, which are poor.

Discharge measurements or field estimates generally made four times a month. Diversions for irrigation of about 24,000 acres above station.

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

T

2

2

2

1

1

1

1

1

1

1

1

00"

0

0

0

o

0

0

1

1

1

1

1

2

2

2

1

1

30

1.0

60

Nov.

1

?

?

2

2

2

2

2

2

aZ

a2

a2

a2

aZ

aZ

al

al

al

al

al

al

al

al

al

al

al

al

al

al

aZ

-

45

1.5

89

Dec.

2

1r

i

i

i

2

2

1

2

2

2

2

2

2

2

1

1

1

1

1

1

1

1

1

2

4

3

11

T

6

66

2.1

131

Jan.

3

13

7

b!3

b20

6

1

bT

b5

b5

b6

b8

b7

a6

a8

alO

blO

b!2

b!5

bl5

b20

b25

b30

b30

b30

a35 a!B"

a30

a30

a20

alO

472

15.2

936

Feb.

a7

a6

b!2

b!5

blT.

blS

12

16

16

10

10

9

8

7

7

7

7

6

7

6

6

55"

6

11

6

5

5

_

-

Z49

8.9

494

Mar.

4

4

3

3

7

5

5

5

5

5

5

5

4

4

4

3

3

4

3

4

3

2

1

00~

0

0

0

0

0

0

91

2.9

180

Apr.

0

0

0

May

1

T

0o0

0

0

0

o

o

o

0

0

0

0

o

o

0

o

0

1

1

I

11

1

1

0

0

0

0

9

0.3

18

June

O0~

0

O

!_

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

0

0

0

-

23

0.8

46

July

00~

O

0

0

0

0

0

0

0

O

O

O

O

O

0

0

1

1

o

1

1

1

1

1

1

7

T

0

0

0

16

0.5

32

Aug.

0

T

23

~T37

1

0

0

0

0

0

0

o

o

0

0

0

o

0

o

0

2

1

6

7

1

1

1

1

21

3

113

3.6

224

Sept.

a2

al

aO0~

0

0

0

0

0

0

O

0

0

0

O

0

0

0

0

o

o

0

0

0

0

0

0

0

0

79

-

82

2.7

163

Calendar year 1950: Max 259 Mln 0 Mean 7.2 Ac-ft 5,250

Water year 1950-51m Max 79 Min 0 Mean 3.3 Ac-ft 2,370

Peak discharge (base, 500 cfs). Mo peak above base.

a No gage-height record; discharge estimated on basis of recorder trace, recorded range in stage, 

weather records, and records for nearby stations, 

b Stage-discharge relation affected by Ice.
SAN JUAN RIVER BASIN 329

San Juan River at Ship Rock, N. Mex.

Location. Lat 36°47'35", long. 108°43'55", in SW£ sec. 22, T. 30 N., R. 18 W., on left 

canK 3 miles northwest of Ship Rock and about 6 miles downstream from Chaco River.

Drainage area. 12,900 sq mi, approximately.

Records available.--January to October 1911, October 1930 to September 1931, and October 

isaa to Beptemoer 1951 in reports of Geological Survey. January to October 1911 and 

November 1915 to December 1931 in reports of State engineer.

Gage. Water-stage recorders. Datum of middle gage is 4,850.45 ft above mean sea level 

Triver-prof lie survey). Auxiliary gages on left bank 400 ft upstream at same datum and 

400 ft downstream at datum 1.85 ft lower. January to October 1911, November 1915 to 

Apr. 3, 1928, chain gage; Apr. 4, 1922 to Oct. 24, 1933, water-stage recorder at site 

about 3 miles upstream at different datums.

Average discharge. 31 years (1916-20, 1921-25, 1927-31, 1932-51), 2,681 cfs.

Extremes. Maximum discharge during year, 9,300 cfs May 29 (gage height, 4.55 ft, middle 

gage); minimum daily, 31 cfs Aug. 22.

1930-31, 1932-51: Maximum discharge, 44,200 cfs Sept. 28, 1935 (gage height, 9.44 

ft, middle gage, from floodmark), from rating curve extended above 20,000 cfs by logarithmic plotting; minimum daily, 8 cfs Aug. 25, 26, 1939.

A stage of abput 6.5 ft, site and datum then in use, occurred Aug. 11, 1929 (discharge, about 80,000 cfs). A greater discharge probably occurred Oct. 6, 1911, when a 

stage of about 22 ft occurred at site then in use (gage washed away).

Remarks. Records good except those for periods of no gage-height record, which are fair, 

ana thdse for period of ice effect, which are poor. Discharge measurements generally 

made twice a week. Diversions for irrigation of about 118,000 acres above station. 

Records of water temperatures and sediment loads are given in Water-Supply Paper 1200.

Revisions. W 1119: Drainage area.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

745 

730

768

970

331

808

730

692

608

526

468

479

479

400

380

354

349

349

354

362

362

380

390

415

385

344 

322

313

313

356" 300

15,309

494

30,360

Nov.

336" 322

344

331

331

336

336

336

349

358

385

415

410

400

425

430

544

508

490

496

563

622 576"

563

526

496 

479

474

474

508

-

13,163

439

26,110

Dec.

514 

502

520

520

479

484

474

490

474

474

496

538

508

502

508

520

520

532

496

457

474

452

446

435

430

446 

4?0

415

380

43U

395

14,731

475

29,220

Jan.

440 

435

457

430

435

430

372

336" 336

344

415

457

468

446

340

367

376

410

479

496

474

462

474

484

508

496 

484

452

462

T79" 514

13,558

437

26,890

Feb.

b400 

b300

b356"

b400

b450

bSOO

b600

622

62T

570

544

563

608

602

538

526

490

502

508

508

520

484

430

415

395

425

410

400

_

_

-

13,682

489

27,140

Mar.

405 

395

380

362

355

380

380

430

420

440

484

664

752

664

596

643

664

692

657

538

468

474

502

576

643

622 

664

808

865

75?

615

17,320

559

34,350

Apr.

550

556

532

484

462

576

643

615

576

538

514

508

457

362

554

376

474

526

615

671

643

700

715

657

840

1,080 

832

824

671

715

-

18,066

602

35,830

May

824 

832

722

629

544

657

1,570

2,090

2,400

2,110

2,030

1,990

2,320

2,400

2,140

1,790

1,620

1,400

1,380

1,430

2,050

3,070

2,320

2,680

2,980

3,630 

6,120

7,900

8.500

7,700

6,700

84,528

2,727

167,700

June

6,120 

4,810

3,730

3,010

3,320

3,040

3,190

3,790

4,310

4,140

4,280

3,960

3,730

3,570

3,100

2,790

3,790

4,070

3,630

3,930

3,760

3,700

3,630

2,870

2,320

1,800 

1,820

1,740

1,640

1,490

-

101,080

3,369

200,500

July

1.380 

i,26d

997

916

824

792

664

636

715

615

526

496

435

331

367

304

248

196

187

160

132

168

208

196

165

173 

150

154

137

116

93

13,681

441

27,140

Aug.

91 

89

297

1,520

2,280

1,700

1,200

840

685

308

354

271

227

190

a!20

80

74

66

57

60

43

31

35

121

2^760

2,190 

980

560

475

533

1,040

19,477

628

38,630

Sept.

2.490

1,620

1,130

806

576

435

358

331

308

271

238

190

132

130

121

119

116

93

85

aSO

a74

aTF

a78

87

114

119 

123

121

240

607

-

11,268

376

22,350

Calendar year 1950: Max 5,730 Mln 86 Mean 1,268 Ac-ft 917,900

Water year 1950-51: Max 8,500 Mln 31 Mean 920 Ac-ft 666,200

Peak discharge (base. 8,500 cfa).--May 29 (2 a.m.) 9,300 cfs (4.55 ft).

a No gage-height record) discharge estimated on basis of 1 discharge measurement and weather 

records.

b Stage-dlschange relation affected by Ice.
330 SAN JUAN RIVER BASIN

West Mancos River near Mancos, Colo.

Location.--Lat 37°22'30", long. 108°15'20", in sec. 14, T. 36 N., R. 13 W., on right bank 

Ij miles upstream from confluence with East Mancos River and 3=r miles northeast of 

Mancos.

Drainage area.--42.1 sq mi.

Records available.--September 1910 to December 1911, April 1938 to September 1951 (no 

winter records most years).

Gage.--Water-stage recorder. Altitude of gage is 7,500 ft. September 1910 to December 

T911, staff gage about half a mile upstream at different datum. April 1938 to Oct. 22, 

1944, water-stage recorder at present site at datum 0.66 ft lower.

Extremes.--Maximum discharge during year, 119 cfs June 19 (gage height, 2.12 ft); minimum 

daily recorded, 0.1 cfs Apr. 11-13.

1910-11, 1938-51: Maximum discharge, 1,080 cfs May 13, 1941 (gage height, 3.89 ft), 

from rating curve extended above 260 cfs; minimum daily recorded, that of Apr. 11-13, 

1951.

Remarks.--Records fair except those for periods of no gage-height record, which are poor. 

Diversions above station for irrigation. During water year 1951, 6,380 acre-ft were 

diverted to storage reservoir above station, and 5,970 acre-ft were returned to river 

above station.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-,control method used Oct. 22-24)

Oct. 1 to Nov. 10

0.9

1.1

1.2

1.3

1.4

Z.O 

3.5 

8.0

14

Apr. 3 to Sept. 30

3 0 1.3

4 .2 1.6 

7 2.6 1.9 

5.0 2.1

9.5

17

39

78

115

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ZO

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

7.1

*8.6

8.0

8.0

8.6

8.6

9.8

8.6

7.6

7.6

7.1

15 6.6

13

11

9.8

12

14

T4

14

13

13

13

*10

8.6

8.6

8.6

8.6

8.6

8.6

9.8

306.4

9.88

608

Nov.

3.0

T75

1.5

1.1

.9

.6

78

1.0

1.1

.8

a. 8

al.l

*a2.0

al.3

al.4

.

_

_

_

-

_

_

_

-

.

_

_

_

_

-

_

_

-

Dec. Jan. Feb. Mar. Apr.

al.7

a .7

.7

.7

.7

.8

.7

.4

.3

.8

.1

TT

.1

.3

.8

1.7

*1.7

2.5

2.4

2.6

2.6

2.8

3.2

2.7

1.9

1.8

2.5

1212"

10

-

79.3

2.64

157

Calendar year : Max Min Mean

May

6.4

6.2

6.6

*7.8

8.5

9.8

8.0

8.0

6.8

6.8

5.2

4.9

l£ 4.2

21

20

20

20

28

34

33

34

36

37

38

17

11

11

*25

46

54

586.2

18.9

1,160

June

66

63

56

51

55

74

78

89

94

94

78

78

76

80

83

92

a97

a 102

*TU2~

100

89

80

70

66

59

59

56

53

53

50

-

2,243

74.8

4,450

July

49

49

46

42

40

37

37

39

39

40

41

*41

42

44

42

42

42

40

40

47

49

49

47

42

39

39

39

40

40

39

41

1,303

42.0

2,580

AC-ft

Aug.

41

47

50

47

37

*33

32

28

26

23

21

23

21

22

22

22

24

23

22

23

23

23

21

19

18

19

17

15

14

12

*ii

779

25.1

1,550

Sept.

11

15

14

13

10

9.C

TT

10

10

9.C

10

11

11

11

12

13

13

12

11

11

16

20

275

*20

19

a!8

a!6

a!5

a!4

a!2

-

395. C

13.2

783

Water year : Max Min Mean Ac-ft

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for nearby stations.
SAN JUAN RIVER BASIN 331

East Mancos River near Mancos, Colo.

Location. La t 37°22'10", long. 108°13'35", in NE^ sec. 24, T. 36 N., R. 13 W., on right 

bank 800 ft upstream from Middle Mancos River and 4 miles northeast of Mancos.

Drainage area.--11.1 sq mi.

Records available.--March 1938 to September 1951 (no winter records most years), discontinued.

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during year, 102 cfs May 28 (gage height, 1.27 ft); minimum 

daily recorded, 0.1 cfs Sept. 25, 26.

1938-51: Maximum discharge, 642 cfs May 8, 1941 (gage height, 2.67 ft), from rating 

curve extended above 130 cfs; no flow Aug. 17-27, 1939, Sept. 25, 26, Oct. 3, 1945.

Remarks.--Records fair except those for period of no gage-height record, which are poor. 

Diversions above station for irrigation.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

0.3 0 0.8 14

.4 .2 .9 28

.5 .8 1.0 45

.6 2.5 1.3 109

.7 5.8

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

ITS

1.0

.8

.8

1.0

1.0

.7

.7

.8

.8

.8

.7

.7

.7

.7

.7

.7

.7

.7

.6

.6 *.6

.7

.7

.7

.7

.7

.7

.7

24.5

0.78

46

Nov.

0.6

.6

.6

.6

.6

.5

75

.5

.5

.5

.5

.6

.6

.6

_.!_

.7

.7

.7

-

-

_

_

_

-

_

_

_

_

-

_

_

-

Dec. Jan. Feb. Mar. Apr.

al.8

T78

1.8

1.8 1.8

1.8

1.8

2.0

2.0

2.5

2.3

2.5

2.8

3.8

5.5

5.8 5.8

5.8

5.8

5.8

5.5

5.8

9.9

12

TT

9.9

8.3

7.4

8.3

8.3

-

151.4

5.05

300

May

7.4

5.8

5.5

 8.3

17

25

24

24

21

22

24

25

22

17

a!6

a!4

a!3

a!2

a!3

a20

28

22

18

22

47

63

74

 IB- 78

31

27

791.0

25.5

1,570

June

17-9-.1

5.5

5.5

4.8

4.2

4.5

5.5

5.5

5.1

3.8

3.5

3.2

4.2

4.8

5.8

7.4

12

 12

12

9.1

8.3

5.5

4.5

3.2

2.2

2.2

2.3

2.2

2.0

-

176.9

5.90

351

July

1.8

1.8

2.2

3.2

3.2

2.8

2.5

2.5

2.3

2.5

2.5

*2.2

2.3

2.3

2.2

2.0

1.6

1.6

1.8

1.6

2.0

2.2

1.6

1.6

1.6

1.6

1.5

1.3

T73

al.3

al.3

62.2

2.01

123

Aug.

al.O

a7.0

alO

aT5

aS.O

»a4.1

a3.0

a3.0

a2.0

al.5

al.5

al.5

al.O

al.O

al.O

al.O

al.O

a. 9

a. 9

a. 8

*.7

175

.8

1.1

1.5

1.0

.8

1.3

2.5

5.5

4.2

80.6

2.60

160

Sept.

2.8

273

2.0

1.3

1.1

1.0

1.0 1.1

1.0

.7

».7

.7

.7

.7

.7

.7

.6

.4

.3

.3

.4

.4

.4

*.3

_a

.1

.1

.3

.7

1.8

-

24.8

0.83

49

Calendar year : Max Mln Mean Ac -ft

Water year : Max Mln Mean Ac-ft

Peak discharge (base, 60 efs).--May 28 (1 a.m.) 102 cfs (1.27 ft). 

» Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and records for nearby stations.
332 SAN JUAN RIVER BASIN 

Middle Mancos River near Mancos, Colo.

Location. lat 37°22'15", long. 108°13'35", in SE^ sec. 13, T. 36 N., R. 13 W., on left 

bank 1,300 ft upstream from mouth and 4 miles northeast of Mancos.

Drainage area. 13.7 sq mi.

Records available. March 1938 to May 1941, October 1941 to September 1951, discontinued 

(no winter records most years).

Gage.--Water-stage recorder. Altitude of gage is 7,450 ft (from topographic map). Prior 

fo Oct. 25, 1941, at site 800 ft downstream at different datum.

Extremes. Maximum discharge during year, 37 cfs May 26 (gage height, 1.35 ft); no flow 

 Aug. 15-17.

1938-51: Maximum discharge, 297 cfs May 15, 1944 (gage height, 2.38 ft), from

rating curve extended above 78 cfs; maximum gage height, 2.85 ft June 18, 1949; no flow

at times for several years.

Remarks.--Records fair. Three small diversions above station for irrigation.

Rating table, water year 195O-51 (gage height, in feet, 

and discharge, in cubic feet per second)

0.1 

.2

1.0 

2.5

1.0

1.2

1.3

4.3

6.8

13

Discharge, in cubic feet per second, water year October 1950 to September 1951

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

Z5

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

0.3

*.3

.3

.2

72

.4

.4

.4

.4

.4

.3

.3

.3

.4

.4

.4

.4

.4

.3

.3

.4

.5

7F

* .5

.3

.Z

.3

.2

.Z

.2

.2

10.3

0.33

20

Nov.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

_._!

_

-

-

-

-

_

-

-

_

-

.

-

_

_

-

_

-

-

-

-

-

_

-

-

Dec. Jan. Feb. Mar. Apr.

aO.6

.9

.6

.4

*.6

.5

.5

.3 73

.4

.4

.4

.3

.6

.7

.8

*.6

.5

.7

.9

.7

.7

1.9

T79~ 2.9

2.0

1.3

1.6

2.2

1.4

-

27 .6

0.92

55

May

1.8

1.4

1.8

*4.1

9.4

12

12

12

12

15

17

19

14

12

12

11

10

10

12

17

22

18

15

14

22

30

5U

29

 24

18

14

451.5

14.6

896

June

"9.7 12

7.8

7.4

5.8

5.0

5.3

5.6

5.0

4.6

3.2

3.0

2.4

3.4

5.6

5.3

5.3

5.3

 4.8

3.4

3.2

2.7

2.5

3.2

3.6

3.8

2.9

1.3

1.0

1.0

135.1

4.50

268

July

~T9 1.0

.9

.8

.8

.6

.4

.4

.3

.4

.4

*.4

.4

.5

.4

.4

.3

.3

.3

.3

.3

.4

.3

.4

.4

.4

.5

.4

.3

72~ .2

14.0

O.45

28

Aug.

0.2

.2

-75- 1.0

.3

*.3

.3

.2

.2

.1

.1

.1

.1

.1

o

0

0

.1

.1

.1

*.i

.2

.1

.2

2

.1

.1

.2

.2

.3

.2

5.9

0.19

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

.1

7T

.2

.3

.JL

6.2

0.21

12

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ac-ft

Peak discharge (base, 50 cfs). No peak above base.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for nearby
SAN JUAN RIVER BASIN

Mancos River near Towaoc, Colo.

Location. Lat. 37°02', long. 108°45', in NW£ see. 18, T. 32 N., R. 17 W., on right bank 

15U l't upstream from bridge on U. S. Highway 666, 6 miles upstream from Azteo Creek, 

and 12 miles south of Towaoc.

Drainage area.--550 sq mi, approximately.

Records available.--October 1933 to September 1943, February 1951 to September 1951 in

reports or Geological Survey. February 1921 to September 1943 in reports of State engineer.

Gage. Water-stage recorder. Datum of gage is 5,051.03 ft above mean sea level, datum of 

T929. Prior to Sept. 30, 1943, water-stage recorders at several sites within 2§- miles 

of present site at various datums.

Average discharge.--22 years (1921-43), 60.8 cfs.

Extremes.--Maximum discharge during period 1,160 cfs Sept. 29 (gage height, 5.71 ft); minimum, no flow on many days.

1921-43, 1951: Maximum discharge, 5,300 cfs Oct. 14, 1941 (gage height, 9.50 ft, 

present site and datum), on basis of slope-area determination of peak flow; no flow at 

times.

Remarks.--Records good except those for periods of no gage-height record, which are poor. 

Diversions for irrigation of about 10,000 acres above station. One diversion above 

station for irrigation of about 50 acres below station.

Rating table, February to September 1951 (gage height. In feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Apr. 28 to May 30)

2.5

2.6

2.7

2.8 

3.0

0.7 

1.5 

2.7 

4.2

3.1 

3.4 

3.7 

4.0

90

155

Discharge, In cubic feet per second, February to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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.

.

-

_

_

-

_

-

_

_

-

_

_

_

_

*-

13

14

14

14

11

10

11

11

13

14

11

9.1

9TT

_

-

.

_

-

Mar.

8.5

9.1

7.6

6.7

7.9

13

9.1

8.8

9.7

9.7

9.4

8.5

6.4

6.7

7.0

6.7

6.7

5.3

4.8

5.0

5.3

5.3

5.0

5.0

4.0

4.0

4.2

4.0

3.9

3.8

478

205.9

6.64

408

Apr.

6.2

6.2

5.0

4.5

4.8

*5.6

6.4

575

4.8

3.9

3.4

3.0

3.0

2.8

2.6

2.7

2.6

2.6

2.7

3.3

3.0

3.4

2.8

2.3

2.0

2.0

2.0

1.6

FT>

2.8

105.9

3.53

210

May

*4.0

3.6

3.2

2. .7

2.2

1.4

1.0

4.5

4.5

3.6

3.3

3.2

2.8

2.5

3.2

3.4

2.6

2.3

1.9

1.7

1.3

1.6

3.3

1.5

.8

.6

677

3.8

3.0

1.9

.8

82.9

2.67

164

June

(«)

0

0

0

July

(»)

0

0

0

Aug.

0

».4

24

43

32

6.7

3.6

1.3

.7

.5

.4

.3

.2

.2

.2

.2.

.1

.1

.1

.1

.5

1.5

3.5

*4.0

2.2

1.9

1.7

1.7

76

54

*7.0

238.1

7 .68

472

Sept.

3.9

3.0

1.7

1.2

.9

.9

.9

.8

.8

.7

.6

.6

.5

.5

.5

.4

.4

.3

.3

.2

.2

 .2

.1

.1

.1

.1

.1

62

122

204.1

6.80

405

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ao-ft

Peak discharge (base, 7OO efs). Sept. 29 (11 p.m.) 1,160 cfs (5.71 ft). 

* Discharge measurement made on this day.

Note.-- No gage-height record May 7, 26, 31, June 1, Aug. 9-24, Sept. 4-28; discharge estimated on 

basis of 1 discharge measurement, weather records, and records for stations on nearby streams.
334 SAN JUAN RIVER BASIN

McElmo Creek near Cortez, Colo.

Location.--Lat 37°19' (revised), long. 108MO' (revised), NE£ sec. 1, T. 35 N., R. 17 W. , 

on left bank half a mile downstream from Alkali Canyon and 5 miles southwest of Cortez.

Drainage area .--223 sq mi.

Records available.--October 1940 to September 1943, October 1950 to September 1951 in 

reports or JJeological Survey. May 19^6 to September 1929, October 1940 to September 

1943 in reports of State engineer.

Gage. Water-stage recorder. Prior to September 1929, water-stage recorder at site 3 miles 

downstream at different datum. Oct.. 1, 1940, to Nov. 3, 1941, water-stage recorder at 

site 150 ft upstream at datum 4.20 ft higher. Nov. 3, 1941, to Sept. 30, 1943, at present site at datum 4.00 ft higher.

Extremes.--Maximum discharge during year, 653 cfs Sept. 30 (gage-height, 7.46 ft), from 

rating curve extended above 165 cfs by logarithmic plotting; minimum daily, 3.4 cfs Aug. 

17-19.

1926-29, 1940-43, 1951: Maximum discharge, 4,540 cfs Sept. 22, 1941 (gage height, 

6.85 ft, from floodmarks), site and datum then in use, from rating curve extended above 

165 cfs on basis of slope-area determination of peak flow; no flow Dec. 30, 31, 1926, 

Jan. 6, 7, 13, 1927.

Remarks.--Records fair except for periods of ice effect or no gage-height record, which 

are poor. Diversions for irrigation of about 200 acres above station. Flow is mainly 

return water from irrigated lands of Montezuma irrigation district.

Rating table, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Aug. 5-25)

3.5

3.6 

3.8 

4.0

3.0 

5.0

56

114

184

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

n

IB

13

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

12

372

12

738

Nov.

18

-

540

18

1,070

Dec.

27

24

22

25

*24

19

21

21

20

18

18

21

27

27

24

24

16

16

17

17

16

20

20

24

21

27

25

24

25

25

. 24

687

22.2

1,360

Jan.

20

*16

18

27

23

18

12

16

18

15

32

29

18

16

19

25

25

24

32

17

19

23

28

25

24

23

28

31

34

25

15

695

22.4

1,380

Feb.

7.0

15

18

20

22

20

18

*18

18

17

18

19

18

17

15

17

18

18

21

27

27

28

25

25

23

*21

18

18

_

.

-

546.0

19.5

1,080

Mar.

23

19

24

18

20

23

22

20

20

22

19

16

16

16

17

18

20

16

14

14

14

14

13

12

12

12

16

16

13

9.6

10

518.6

16.7

1,030

Apr.

13

12

9.6

8.0

8.4

*12

11

11

10

12

7.7

7.4

5.3

5.6

6.2

7.4

8.4

8.0

6.5

8.0

6.2

5.0

4.6

12

3_6

29

20

15

21

34

-

360.3

12.0

715

May

*28

18

31

24

18

29

29

22

17

16.

20

20

26

32

49

38

56

91

69

61

67

69

65

64

51

45

43

43

41

44

42

1,268

40.9

2,520

June

37

*42

41

41

36

33

33

31

30

29

36

33

32

33

37

38

36

40

38

38

43

39

40

40

40

32

25

21

19

11

-

1,030

34.3

2,040

July

16

12

12

8.0

8.4

9.2

6.8

6.5

6.5

6.2

4.6

4.8

*11

12

5.9

5.3

5.3

5.6

5.0

4.8

5.9

8.4

5.6

5.3

5.3

5.9

5.3

6.5

5.0

4.6

4.8

218.5

7.05

433

Aug.

5.0

*12

118

26

14

12

10

9.2

6.8

5.6

5.0

4.6

4.4

3.8

3.8

3.6

3.4

3.4

3.4

3.6

3.6

6.2

13

*7.1

7.7

4.2

3.8

4.2

19

30

*16

372.4

12.0

739

Sept.

17

12

8.4

7.7

6.8

7.4

6.8

6.8

6.2

5.6

5.9

5.6

5.6

5.9

5.9

5.9

5.6

5.3

5.3

5.3

5.6

5.3

5.6

5.6

5.6

5.6

5.6

5.6

12

175

372.5

12.4

739

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51 : Max 175 Mln 3.4 Mean 19.1 Ac-ft 13,840

Peak discharge (base. 550 cfal.--Aug. 3 (3 a.m.) 478 cfs (6.85 ft); Sept. 30 (3 a.m.) 653 cfs 

(7.46 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 31 to Jan. 28, Jan. 30 to Feb. 3, Feb. 10-15. 

No gage-height record Oct. 1 to Dec. 4, Feb. 4-9; discharge estimated on basis of 1 discharge measurement and weather records.
SAN JUAN RIVER BASIN 335

McElmo Creek near Colorado-Utah State line

Location.--Lat 37°19', long. 109°01', sec. 2, T. 35 N., R. 20 W., on right bank Ij miles

 above Colorado-Utah State line, 2 miles above mouth of Yellowjacket Creek, and 2 miles 

west of former town of McElmo.

Drainage area.--350 sq mi, approximately. 

Records available.--Mar. 1 to Sept. 30, 1951. 

Gage.--Water-stage recorder.

Extremes.--Maximum discharge during period, 1,700 cfs Aug. 29 (gage height, 7.05 ft), from

 rating curve extended above 130 cfs on basis of slope-area determination of peak flow; 

minimum daily, 0.1 cfs on Aug. 20, Sept. 11, 12, 14, 21-23, 25, 27, 28.

Remarks.--Records good except those for periods of ice effect, no gage-height record, or

 those above 200 cfs, which are poor. Diversions for irrigation of about 1,000 acres 

above station. One diversion above station for irrigation of about 60 acres below 

station.

Rating table, period Mar. 1 to Sept. 30, 1951, except period of ice effect 

(gage height, in feet, and discharge, in cubic feet per second)

2.3

2.4

0.1

.5

1.0

2.0

2.7

2.8

5.0

9.0

15

3.5

4.0 

4.5

142

270

430

Discharge, in cubic feet per second, March to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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. Mar.

*26

23

20

20

20

22

20

20

20

20

20

16

16

15

14

14

17

b!5

b!6

b!5

15

16

14

12

11

10

7.4

6.6

ti

11

486.3

15.7

965

Apr.

13

10

10

7.4

7.0

*6.6

7.4

5.0

4.7

5.0

6.6

4.4

2.0

1.5

1.3

1.2

1.1

1.0

1.0

1.7

1.0

1.0

1.0

.8

1.3

15

6.2

1.5

1.9

9.6

137.2

4.57

272

May

*14

7.4

1.8

5.0

7.0

6.2

13

8.6

3.5

2.9

2.6

5.0

6.2

11

38

31

20

110

35

60

75

85

80

80

65

50

45

45

35

35

45

1,028.2

33.2

2,040

June

36

*34

44

40

36

25

24

23

22

22

22

22

22

22

23

24

24

25

24

24

25

25

25

25

21

15

11

8.0

6.0

5.0

-

704.0

23.5

1,400

July

3.8

3.5

3.2

2.6

2.6

2.0

1.7

1.6

1.5

1.1

1.0

1.0

*1.0

1.2

1.0

1.0

.9

.7

.6

.6

.6

.6

.5

.5

.4

.3

.3

.4

.4

.2

72

37.0

1.19

73

Aug.

0.2

*9.9

287

85

30

15

8.0

4.0

2.3

1.5

1.2

1.0

1.2

.8

.8

.3

.2

.2

.3

^1

.6

1.7

.5

108

21

6.6

7.8

6.2

*98

82

*25

806.4

26.0

1,600

Sept.

11

4.4

1.8

.8

.6

.4

.5

.4

.4

.6

.1

.1

*.4

.1

.2

.2

.3

.3

.5

.3

.1

.1

.1

.3

.1

.3

.1

.1

161

400

-

585.6

19.5

1,160

Calendar year : Max Min Mean Ac-ft

Water iteryear : Max Min Mean Ac-ft

Peak discharge (base. 1.200 efs). Aug. 5 (5 p.m.) 1.550 cfs (6.77 ft); Aug. 24 (4 p.m.) 1,580 efs

i.52 ft); Aug. 29 (5 p.m.) 1,700 cfs (7.05 ft); Sept. 29 (8:30 p.m.) 1,440 cfs (6.62 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Apr. 5, May 18 to June 30, Aug. 4-9; discharge estimated on basis of

discharge measurement and records for nearby stations.
336 SAN JUAN RIVER BASIN

San Juan River near Bluff, Utah

Location.--Lat 37°09', long. 109°52', in SW£ sec. 7, T. 42 S. , R. 19 E. , on left bank 1,600 

rt downstream from Gypsum Creek, 1,800 ft upstream from bridge, 20 miles southwest of 

Bluff, and 114 miles upstream from mouth.

Drainage area. 23,000 sq mi, approximately.

Records available.--October 1914 to September 1917, March 1927 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,050 ft (from river-profile map). Oct.

 30, 1914, to Sept. 30, 1917, chain gages at sites 1,650 ft and 1,700 ft downstream at

different datums. Feb. 19 to Mar. 15, 1927, staff gage at same site and datum.

Average discharge.--27 years, 2,766 cfs.

Extremes.--Maximum discharge during year, 15,900 cfs Sept. 30 (gage height, 12.30 ft); minimum, 46 cfs Aug. 23.

1914-17, 1927-51: Maximum discharge, 70,000 cfs Sept. 10, 1927 (gage height, 32.0 

ft), from rating curve extended above 30,000 cfs; no flow July 3-13, 1934, Aug. 24-27, 

29, 1939.

Flood of Oct. 6, 1911, which is greatest known at Ship Rock, New Mex., probably exceeded that of Sept. 10, 1927, at this station, but stage was not accurately determined.

Remarks.--Records good except those for periods of fragmentary or no gage-height record, 

wnicn are fair. Discharge measurements generally made four times a week. Diversions 

for irrigation of about 190,145 acres above station. No diversions between station 

and mouth of river. Records of chemical analyses, water temperatures, and sediment 

loads for the water year 1951 are given in Water-Supply Paper 1200.

Revisions (water years). W 918: 1917. Revised figures of discharge, in cubic feet per 

second, ror period in the water year 1940, superseding those published in Water-Supply 

Paper 899, are given herewith:

Aug. 28 .......... 1,780

Month

Calendar year 1940. .........

Cfs -days

598,447

Maximum

12; 150

Minimum

31

Mean

693

1,635

Runoff in 

acre-feet

1,187,000

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Ac-ft

Oct.

756 

738

617

f595

f720

858

774

708

628

628

542

536

500

480

476

451

432

f400

f382

335

331

344

331

340

352

348

335

fSll

f292

f273 

303

15,116

488

29,980

Nov.

276 

273

?84

307

311

335

335

340

315

315

323

352

364

382

378

391

409

485

526

510

495

485

574

640

54?

531

521

505

490

476

12,470

416

24,730

Dec.

471 

510

542

526

557

557

531

516

516

516

510

505

568

584

579

579

584

590

579

579

568

552

542

485

476

f451

f446

f428

418

f563 

536

16,364

528

32,460

Jan.

552 

531

f437

f471

471

466

f446

f446

f395

f428

348

373

480

f536

f536

f442

f418

f391

446

f510

f526

f542

521

552

536

531

516

f495

521

531 

590

14,984

483

29,720

Feb.

f601 

f284

f!83

f!66

266

461

651

816

758

662

656

623

606

612

623

601

547

552

552

563

542

531

536

516

485

476

471

480

_

-

14,770

528

29,300

Mar.

f451 

485

428

461

f451

a420

"458 f382

432

451

461

485

480

568

645

628

590

601

617

651

651

601

595

612

606

601

640

590

584

656 

72J5

16,977

548

33,670

Apr.

762 

628

595

547

536

485

428

490

568

547

552

fSOO

476

490

461

f356

352

319

413

500

557

640

634

612

651

656

928

888

816

810

17,197

573

34,110

May

697 

750

858

810

66Z

595

542

702

1,680

1,880

1,910

1,880

2,000

2,310

2,460

2,140

1,820

1,670

1,580

1,470

1,470

2,050

2,580

2,550

2,390

2,400

3,070

5,380

6,990

7,290 

6,740

71,326

2,301

141,500

June

6,040 

S,4lO

4,240

3,310

2,900

2,760

2,590

2,850

3,230

3,570

3,700

3,660

3,170

3,020

3,090

2,850

2,660

3,340

3,810

3,680

3,340

3,170

3,210

3,110

2,750

2,380

2,040

1,910

1,700

1,570

95,060

3,167

188,500

July

1,410 

1,270

1,120

984

852

786

697

656

584

536

617

574

f531

f476

f391

f352

319

296

f244

f208

f335

a390

f476

f!80

f!77

166

148

fl!2

alOO

a 100 

a90

15,177

490

30,100

Aug.

f!38 

f!40

501

1,520

1,060

1,340

1,380

1,050

900

786

674

552

a395

a305

f231

a!95

a!83

a!74

a!55

a!30

f!57

f517

f70

TBT

1,240

1,680

1,630

998

1,070

4,250 

1,320

24,895

803

49,380

Sept.

1,340 

1,940

1,36C

95f

858

720

521

f49f

f437

f43f

f331

31f

a250

a200

a!60

a!30

allO

f!06

fllS

11*

fllf

f!09

f99

194-

f99

f88

TOT

IIP

1,180

9.720

22,617

754

44,860

Calendar year 1950: Max 4,900 Mln 83 Mean 1,180 Ao-ft 854,200

Water year 1950-51: Max 9,720 Mln 70 Mean 923 Ac-ft 668,300

Peak discharge (base. 12,000 efs). Sept. 30 ( 3 p.m.) 15,900 cfs (12.30 ft).

a Ho gage-height record; discharge estimated on basis of discharge measurements, appearance of 

chart, and records for station at Ship Rock, New Mex.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
COLORADO RIVER MAIN STEM 337

Colorado River at Lees Ferry, Ariz.

Location. Lat 36°51'45", long. Ill"36'15", in NEi;SEir sec. 13, T. 40 N., R. 7 E., on left 

bank at head of Marble Gorge at Lees Ferry, just upstream from Paria River, 28 miles 

downstream from Utah-Arizona State line, 61,5 miles upstream from Little Colorado 

River, and 79 miles downstream from San Juan River.

Drainage area. 107,900 sq mi, approximately.

Hecoras available. June 1921 to September 1951. Also calendar year estimates 1895-1910, 

and monthly estimates January 1911 to May 1921, published in Water-Supply Paper 918 

(estimates for 1898, 1899, 1912, 1913 supersede figures published in Water-Supply Paper 

556).

Gage. Water-stage recorder since Jan. 19, 1923. Datum of gage is 3,106.16 ft above mean 

sea level, datum of 1929. Prior to Jan. 19, 1923, staff gages or reference points 

within 400 ft of present gage, at various daturas.

Average discharge. 30 years (1921-51), 17,290 cfs

Kxtrernes. --Maximum discharge during year, 67,300 cfs June 1 (gage height, 15.27 ft); minimum, 3,020 cfs Feb. 6 (gage height, 5.96 ft).

1921-51: Maximum discharge, 220,000 cfs June 18, 1921 (gage height, 26.5 ft, from 

floodmarks), from rating curve extended above 120,000 cfs on basis of discharge computed 

for station near Grand Canyon; minimum, 750 cfs Dec. 27, 1924 (gage height, 4.2 ft).

Maximum discharge known, about 300,000 cfs July 7, 1884 (gage height, 31.5 ft, present 

site and datum, from floodmark at mouth of Paria River), from rating curve extended 

above 120,000 cfs on basis of discharge computed for flood of June 18, 1921, at station 

near Grand Canyon.

Remarks. Records excellent. Natural flow of stream affected by transmountain diversions, 

storage reservoirs, power developments, ground-water withdrawals and diversions for 

irrigation, and return flow from irrigated areas. Discharge measurements generally 

made once a week during normal flow and more often during high water, 92 made during 

year. Records of chemical analyses, water temperatures, and sediment loads for the 

water year 1951 are given in Water-Supply Paper 1200.

Revisions (water years).--W 859: 1921-23. See also Records available.

Rating table, water year 1950-51, (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used May 10-31, June 5-15, 

22-26, Aug. 5-9)

6.0 3,080

6.5 4,150

7.0 5,430

7.5 7,010

8.0 8,810

9.0 13,130

10.0 18,570

11.0 25,260

12.0 33,380

14.0 52,880

15.0 63,940

16.0 75,110

Discharge, in oubio feet per second, water year October 1950 to September 1951

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

7,250 

7,280 

6,910

6,700

6,410

6,050

5,810

5,960

6,020

5,870

5,720

5,720

5,720

5,520

5,400

5,260

5,070

5,020

5,180

5,050

4,890

4,890

5,100

5,180

5,050

5,070

4,940

4,820

4,760 

4,790

4,790

172,200

5,555

341,600

Nov.

4,640 

4,640 

4,760

4,990

5,020

4,970

4,970

5,050

5,120

5,150

5,260

5,520

5,490

5,430

5,460

5,660

5,870

5,960

5,990

5,960

6,280

6,500

6,500

6,470

6,94O

7,320

7,350

7,490

7,840 

7,770

-

176,370

5,879

349,800

Dec.

7,460 77350" 

7,350

7,040

7,110

7,180

7,080

6,840

6,770

6,770

6,700

6,570

6,310

6,340

6,570

6,740

6,670

6,440

6,340

6,570

7,040

7,460

7,560

7,180

6,770

6,670

6,670

6,370

6,020 

5,750

5,550

209,270

6,751

415,100

Jan.

5,430 

5,350 

5,370

5,490

5,430

5,230

5,320

5,210

b5,020

b4,760

b4,520

4,270

3,790

b3,600

b3,640

b4,250

4,690

4,860

4,860

4,660

4,690

4,920

5,260

5,630

5,840

5,310

5,810

6,020

6,310 

6,370

6,540

158,950

5,127

315,300

Feb.

6,810 

6,700 

b6,120

b4,820

3,550

3,060

3,320

3,970

,070

,120

,080

,420

,940

,010

,380

,460

,380

,380

,420

,210

,04O

,110

,660

,950

7,950

,380

,180

,320

:

-

181,780

6,492

360,600

Mar.

7,380 

7,380 

7,490

7,520

7.21TT

7,040

7,150

6,870

6,570

6,440

6,240

6,020

6,500

7,080

6,980

7,040

7,350

7,490

7,040

6,700

6,700

6,770

6,770

6,770

6,440

6,150

5,960

6 , 08U

6,240 

6,470

6,700

210,540

6,792

417,600

Apr.

6,840 

7,700 

8,850

8,930

8,280

8,100

8,280

8,060

7,490

7,250

7,280

7,600

7,660

8,060

8,700

8,930

9,040

8,770

8,540

8,510

8,100

7,700

7,810

7,920

8,850

10,400

11,500

13,100

14,600 

14,900

-

267,750

8,925

531,100

May

14,900 

L5.400 

15,700

16,200,

16,200

15.40C

14.60C

14,40C

14,100

14,100

15,700

18,OOQ

20,100

22,700

25,300

26 , 400

26,000

26,OOC

25.60C

24,90C

25.30C

23,OOC

32,100

37,000

37,900

39,300

41,200

42,100

47,100 

55,000

62,80C

829, 50C

26,76C

1,645 POO

June

66,200 

63 , 90C 

63,900

61.70C

58,300

54,000

50,200

46,600

43,100

39,800

38,800

38,800

37,900

37,000

35,200

33,600

33,400'

34,300|

37,400,'

43.6001

49,700

52,900

57,200

60,600

61,700

58,300,

54,000

30,200

47,600 

45,100

~

1,455,20C

48,5K

2,886, OOC

July

43,100 

39,300 

37,000

34,700

31,600

30,000

29,200

28,000

26,000

24,200

23,100

21,700

21,100

20,400

19,200

18,000

17,700

17,100

16,000

15,700

15,700

16,500

16,200

15,400

".5,400

15,100

16,500

15,700

15,100 

14,400

14,900

684,000

22,060

1,357 ,000

Aug.

14,100 

13,600 

13,600

21,100

22,400

23,400

22,700

18,300

16,800

15,700

14,600

14,100

13,600

12,900

12,000

11,100

10,200

9,400

8,770

8,360

8,130

8,020

7,840

7,320

7,320

7,770

7,420

9,080

11,500 

13 , 400

12,200

396,730

12,800

786,900

Sept.

13,900 

14,400 

12,200

11,100

11,100

9,930

8,730

8,060

7,380

6,910

6,570

6,600

6,500

6,150

5,750

5,430

5,070

4,940

4,760

4,660

4,660

4,590

4,560

4,560

4,540

4,590

4,490

4,390

4,690 

5,840

-

207,050

6,902

110,700

Calendar year 1950 : Max 58,300 Min 3,600 Mean 14,920 Ac-ft 10,800,000

Water year 1950-51 : Max 66,200 Mln 3,060 Mean 13,560 Ac-ft 9,817,000

Peak discharge (base, 55,000 efs).--J 

62,800 cfs (14778 ft).

b Stage-discharge relation affected by ice.

(l p.m.) 67,300 cfs (15.27 ft); June 25 (2:30 p.m.)
338 PARIA RIVER BASIN 

 Henrieville Creek near Henrieville, Utah

Location.--Lat 37°34' ( long. 111°59', in SEi; seo. 23, T. 37 S. , R. 2 W. , on right bank 

i.a miles northeast ol Henrieville.

Records available.--August 1950 to September 1951. 

Sage. Water-stage recorder and concrete contol.

Extremes.--1950: Maximum discharge during period August to September, 86 cfs Sept. 6

 (gage height, 1.63 ft); minimum, 1.6 cfs Aug. 20, 21.

1950-51: Maximum discharge during water year, 526 cfs Aug. 3 (gage height, 2.50 ft) 

from rating curve extended above 10 cfs on basis of slope-area determination of peak 

flow; minimum, 0.2 cfs Mar. 4, but may have been less during period of fragmentary 

gage-height record.

Remarks.--Records good except those for periods of fragmentary or no gage-height record, 

whicn are fair. No diversions above station.

Discharge, In cubic feet per second, 1950-51 

1950

Day

1

2 5

4

b

6

7

8

Aug.

-

-

-

-

-

_

-

-

Sept.

2.8

2.8

2.8

2.7

2.8

6.9

a6.0

a3.0

Day

9

10

11

12

13

14

15

16

Aug.

-

-

-

-

-

-

-

-

Sept.

a3,0

a2.9

a2,9

a2,9

a2.9

a3.0

a3.0

Day

17

18

19

20

21

22

23

24

Aug.

-

-

*2.5

2.5

2.5

2.7

3.0

3.0

Sept.

a3.o

a3.0

*3.0

3.0

3.2

3.2

3.2

3.2

Day

25

26

27

28

29

30

31

Ac-ft. ...................................................

Aug.

3 0

3.0

2.7

2.5

2.5

2.5

2.7

~

-

Sept.

3.2

3.0

3.0

3.0

2.8

2.8

190

Peak discharge (base, 100 cf3).--No peak above the base. 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of engineer's 

notes.

1950-51

Day

1

2

3

4

5

6

7

8

9

10

11

12 

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

3.4

3.4

3.2

372

3.4

3.4

3.4

3.4

3.4

3.4

3.4 

3.4

3.7 

3.7

3.7

3.7 

3.7

3.7

3.7

*3.7

3.7 

3.7

3.9

377

3.7

3.7

3.9

3.9

3.7

3.9

111.2

3.59

221

Nov.

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.9

3.0

575

3.7

3.5

4.5

3.9

4.7

7.2

*573

4.7

4.4 

3.9

3.9

3.9

3.7

4.1

4.4

4.2

3.9

-

125.3

4.18

249

Dec.

4.2

3.4

4.6

5.0

375

3.8

4.7

4.4

4.2

4.2

4.3

4.2

4.2

4.3

4.0

4.3

3.8

3.9

3!?

4.1

3.7

3.4

3.3

375.

3.9

4.1

4.5

126.4

4.08

251

Jan.

2.9

f2.5

475

*3.7

3.8

f2.6

f2.8

2.5

2.6

3.3

4.7

4.2

5.7

6.0

6.0

6.0

6.0

4.7

6.8 

9.1

8.1

8.5

6.5

*7.6

9.1

9.6 B7C

3.6

163.0

5.26

323

Feb.

f4.1

f5.5

f9.2

flO~5.1

6.4

6.4

6.8

6.4

6.4

6.8

7.2

4.9

4.7

4.4

4.7

5.0

4.8

4.4 

4.2

4.6

4.8

3.9

375

4.8

_

_

-

157.8

5.64

313

Mar.

4.5

*4.4

4.5

4.1

5.3

7.2 BT*

6.0

6.0

5.7

4.4

4.7

5.3

5.0

T7Z

3.9

*4.4

4.7

4.2

3.9

3.9

4.4

4.4

3.8

3.9

5.3

6.4

148.0

4.77

294

Apr.

5.7

5.7

5.7

5.7

6.4

6.0

5.3

5.0

4.7

4.7

*4.7

4.7 

4.7

4.7

4.7

4.7 

4.7

5.0

4.7

4.7

4.7

4.7

a4.6

a4.5

*a4.2 T74-

~r.e 14

-

160.3

5.34

318

May

6.4

6.0

6.0

5.0

5.0

4.7

4.7

5.0

5.0

5.0

4.7

4.7 

5.3

ii

*9.1

5.7 

9.4

6.0

5.0

5.0

5.7

4.7

4.2

3.9

3.7

3.4

377

3.4

3.4

177.0

5.71

351

June

3.4

3.7

377

3.4

3.4

3.2

3.2

3.2

3.2

3.0

3.0

3.0 

5.0

3.2

3.0

3.4 

3.0

3.0

*2.7

2.3

2.7 

2.7

2.5

2.5

2.5

2.3

2.3

2~2

2.5

-

88.4

2.95

175

July

2.2

2.0

2.2

2.0 270-

2.2

2.2

2.3

2.3

2.3

2.3

2.5 

2.5

2.8

*2.8

2. 8 

3.4

3.0

5.4

5.3

A. 4 

7>'.9

3.4

3.4

3.9

3.9

3.7

3.4

3.4

3.2

93.8

3.03

186

Aug.

4.2

f4.9

*f26

aS.O

*3.9

3.7

3.4

3.4

- 3.4

3.4

3.2

3.2 

3.2

3.4

3.4

3.4 

3.4

4.2

3.4

3.7

3 2 

*3'.2

3.0

3.0

2.8 372-

4.4

f36

15. 0

a4.0

167.0

5.39

331

Sept.

*3.7

377

3.7

3.7

3.7

3.

3.

3.

3.

3.

3.

3. 

3.

3.7 

3.7

3."

3 9

3!?

3.7

3.9

3.9 

3.7

3.7

3.7

3.7

3.7

3.7

12

a4.5

a3.7

-

120.9

4.03

240

Calendar year 1950 : Max - Mln - Mean - Ac-ft -

Water ter year year 1950-51 1950-51 : : Max Max 36 36 Mln Mln 2.0 2.0 Mean Mean *-* 4-*9 s Ac-ft Ac-ft 3,250 3,250 ________________ 

Peak discharge (base, 100 of a). Aug. 5 (5:50 p.m.) 526 cfs(2.50ft>, Aug. 29-(2 p.m.) 208 cfs (l.9S)7 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, engineer's notes 

and records for nearby streams.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
PARIA RIVER BASIN 339

Paria River at Lees Ferry, Ariz.

Location. Lat 36°52'15", long. 111°36'30", In NW^NE^ sec. 13, T. 40 N., R. 7 E., on left 

oanic, half a mile upstream from mouth and 1 mile northwest of Lees Ferry.

Drainage area. 1,570 sq mi, approximately. 

Records available.--October 1923 to September 1951.

Gage. Water-stage recorder. Datum of gage is 3,123.4 ft above mean sea level, datum of 

T929. Prior to Oct. 5, 1925, staff gage 2,000 ft upstream at different datum. Oct. 13, 

1925, to Sept. 11, 1929, staff gage at present site and datum.

Average discharge.--28 years, 32.6 cfs.

Extremes. Maximum discharge during year, 4,480 cfs Aug. 4 (gage height, 11.5 ft), from 

rating curve extended above 2,000 cfs; minimum, 0.5 cfs Jan. 10, result of freeze-up; 

minimum daily, 2.9 cfs July 6, 11.

1923-51: Maximum discharge, 16,100 cfs Oct. 5, 1925 (gage height, 16.3 ft, revised, 

present datum, from rating curve extended above 2,000 cfs on basis of float-area determination of peak flow; no flow during periods in several winters prior to 1928.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

wnich are fair, and those above 500 cfs, which are poor. Discharge measurements generally made once a week. Diversions above station for irrigation of about 3,300 acres. 

Records of sediment loads for the water year 1951 are given in Water-Supply Paper 1200.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge> in cubic feet per second)

Oct. 1 to Aug. 3 Aug. 4 to Aug. 29 Aug. 30 to Sept. 3O

4.5

4.6

5.2 

5.5

2.0 

5.0

18

5.5

2.6

5.3

13

25

53

6.0 124

6.5 236

7.0 397

8.0 880

5.1

5.2

5.3 

5.5 

5.8

2.7

5.4

9.6

23

53

6.4 164

7.0 339

8.0 785

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ffl

Oct.

4.7

4.7

5.0

5.0

5.0

5.4

6.1

6.1

6.9

7.3

£4TTT

6.1

5.8

5.4

5.0

4.7

6.1

6.1

5.8

a6

a6

a6

a6

a6

6.1

6.5

6.9

7.7

7.7

7.7

189.1

6.10

375

Nov.

8.0

571

8.0

8.8

9.6

10

11

10

10

10

9.6

9.2

13

18

23

25

22

22

23

25

23" 26

22

21

20

20

20

20

21

22

-

498.6

16.6

989

Dec.

23

22

21

19

20

20

19

20

20

19

20

21

22

20

22

22

21

20

19

21

20

20

20

20

21

22

20

29

24

25

?3

646

20. 8

1,280

Jan.

25

16

11

9.2

21

24

b!6

b7

b!2

b9

bll

blS

b!4

b!4

bO.8

b!9

blS

23

28

35

23

19

30

37

3T

28

26

25

28

32

25

652.2

21.0

1,290

Feb.

b7

b8

b8

blO

35

46

32

29

25

23

23

22

20

14

12

15

16

18

19

16

16

18

16

16

17

19

21

23

-

-

-

544

19.4

1,080

Mar.

23

22

24

23

22

23

27

5s

25

23

20

16

14

17

16

15

13

11

10

14

14

12

11

12

12

11

10

8.8

878

8.8

13

504.4

16.3

1,000

Apr.

48

25

17

13

12

11

14

11

9.2

7.7

6.5

6.9

6.5

5.4

5.0

5.4

5.4

6.1

6.5

17

26

21

16

12

8.4

7.7

6.9

9.6

10

28

-

384.2

12.8

762

May

32

22

20

16

11

9.2

7.3

5.0

4.7

5.0

4.7

4.4

4.1

5.4

59

65

3T

24

17

25

18

13

12

32

22

14

8.8

5.8

3.8

3.8

1.5

516.5-

16.7

1,020

June

3.2

378

4.1

±J.

4.1

4.1

4.1

4.1

4.1

3.8

3.2

3.5

3.5

4.1

4.4

4.7

4.7

3.8

3.5

4.1

4.1

4.1

4.1

4.4

4.1

3.8

3.8

3.2

3.5

3.2

-

117.9

3.93

234

July

3.8

3.8

3.2

3.5

3.2

2.9

375

3.5

3.2

3.2

2.9

3.2

3.5

3.8

3.8

4.1

5.0

4.1

4.4

7.2

22

6.1

4.4

7.7

5.8

4.7

4.4

4.7

4.7

4.4

4.4

149.1

4.81

296

Aug.

5.0

4.4

41

762

12TT

44

18

12

7.8

5.6

4.5 -3.7

3.7

3.7

4.0

4.0

4.2

4.0

4.0

4.0

4.0

18

16

12

7.8

5.0

4.5

5.3

758

503

65

2,464.2

79.5

4,890

Sept.

25

17

13

10

8.8

7.5

5.8

4.9

4.3

4.0

3.8

3-. 5

3.8 4'.0

4.0

3.8

4.0

4.0

4.0

4.0

3.8

3.8

4.0

4.3

4.3

4.3

4.3

5.8

105

69

347.8

11.6

690

Calendar year 1950 Max 4O4 Mln 3.3 Mean 17.7 Ac-ft 12,8OO

Water year 1950-51: Max 762 Mln g.9 Mean 19.2 Ac-ft 13,910

Peak discharge (base. 1.400 efs). Aug. 4 (9:30 a.m.) 4,480 cfs (11.5 ft); Aug. 29 (9 p.m.) 4,180 

cfs (11.5 ft).

a No gage-height record; discharge estimated on basis of recorded range in stage, 

b Stage-discharge relation affected by ice.
340 COLORADO RIVER MAIN STEM

Transmountain diversions from Colorado River basin above Lee Ferry

Records of all the transmountain diversions from the Colorado River basin above Lee 

Ferry (the division point between the upper and lower basins of the Colorado River Compact) 

are given herein. They are listed and tabulated separately by States.

In Colorado there are 21 tunnels or ditches all of which are equipped with water-stage 

recorders"; Records furnished by State engineer. The location of these diversions are 

given in the following list.

Grand River ditch diverts water from tributaries of Colorado River to Long Draw (tributary of Cache la Poudre River) in the Platte River basin. Two collection ditches from 

head gates in sec. 34, T. 5 N., R. 76 W., and sec. 29, T. 6 N., R. 75 W., intercept all 

tributaries upstream on each side of the Colorado River and converge at La Poudre Pass.

Eureka ditch diverts water from right bank of Tonahutu Creek, in sec. 7, T. 4 N., R. 7^ 

W., to Big Thompson River in the Platte River basin.

Alva B. Adams tunnel diverts water from Shadow Mountain Reservoir and Grand Lake, in 

sec. 4, T. 3 N., R. 75 W., to Lake Estes (Big Thompson River) in the Platte River basin. 

For daily discharge, see page 16.

Berthoud Pass ditch diverts water from tributaries of Fraser River between the head 

gate, in sec. 34, T. 23., R. 75 W., and Berthoud Pass, to West Fork of Clear Creek in the 

Platte River basin.

Moffat water tunnel diverts water from tributaries of Praser River to South Boulder 

Creek in the Platte River basin by means of three collection ditches extending from the 

tunnel portal to right bank of Vasquez Creek in sec. 18, T. 23., R. 75 W., right bank of 

Fraser River in sec. 14, T. 23., R. 75 W., left bank of Middle Ranch Creek in sec. 25, T. 

1 S., R. 75 W., and intercepting intermediate tributaries (additional collection ditches 

to be constructed).

Jones Pass tunnel diverts water from tributaries of Williams River between the head 

gate on right bank of Bobtail Creek in sec. 28, T. 3 3., R. 76 W., and head gate on left 

bank of McQueary Creek in sec. 16, T. 3 3., R. 76 W., to West Fork Clear Creek in the 

Platte River basin.

Boreas Pass ditch diverts water from tributaries of Blue River between the head gate in 

sec. 26, T. 73., R. 77 W., and Boreas Pass, to Tarryall Creek in the Platte River basin.

Fremont Pass ditch diverts water from tributaries of Tenmile Creek in sec. 2 and sec. 3, 

T. 83., R. 79 W., to East Fork Arkansas River.

Columbine ditch diverts water from tributaries of Eagle River in sec. 5, T. 83., R. 79 

W., to Chalk Creek (tributary of East Fork Arkansas River).

Ewing ditch diverts water from left bank of Eagle River in sec. 11, T. 83., R. 80 W., 

to Tennessee Fork Arkansas River.

Wurtz ditch diverts water from tributaries of Eagle River between the head gate in 

sec. 32, T. 73., R. 80 W., and Tennessee Pass, to Tennessee Fork Arkansas River.

Twin Lakes tunnel diverts water from tributaries of Roaring Fork between the two head 

gates located in sec. 21, T. 11 3., R. 83 W., sec. 11, T. 11 S., R. 83 W., and west portal 

of Twin Lakes tunnel located in sec. 24, T. 11 S., R. 83 W. , to Lake Creek in Arkansas 

River basin.

Busk Ivanhoe tunnel diverts water from Ivanhoe Lake (Fryingpan River) in sec. 13, T. 3 

S., R. 83 W., to Lake Fork Arkansas River.

Larkspur ditch diverts water from tributaries of Tomichi Creek between Marshall Pass and 

the two head gates located in sec. 11, T. 48 N., R. 6 E., and, sec. 1, T. 47 N., R. 6 E. , to 

South Pork Arkansas River.

Tarbell ditch diverts water from a tributary of Cochetopa Creek in sec. 12, T. 43 N., 

R. 1 E., to tributary of Saguache Creek in the Rio Grande basin.

Tabor ditch diverts water £rom Cebolla Creek in sec. 27, T. 43 N., R. 3 W., to a tributary of Clear Creek in the Rio Grande basin.

Treasure Pass ditch diverts water from tributaries of Wolf Creek between Wolf Creek 

Pass and the two head gates located in sec. 31, T. 38 N., R. 2 E., and sec. 6, T. 37 N., 

R. 2 E., to a tributary of South Fork in the Rio Grande basin.

Piedra Pass ditch (Harley Fuchs ditches 1 and 2) diverts water from tributaries of 

Piedra River between Piedra Pass and the two head gates located in NW-^ sec. 4, T. 38 N., 

R. 1 W., and SWij sec. 33, T. 39 N., R. 1 W., to South River In the Rio Grande basin.

Squaw Pass ditch diverts water from Williams Creek in sec. 13, T. 39 N., R. 3 W., to a 

tributary of Rio Grande (additional collection ditches to be constructed).

Fuchs ditch diverts water from North Fork Los Pinos River in sec. 3, T. 39 N., R. 4 W., 

to Weminuche Creek in the Rio Grande basin.

Raber-Lohr ditch diverts water from Rincon la Vaca Creek (tributary of Los Pinos River) 

in sec. 5, T. 39 N., R. 4 W., to Weminuche Creek in the Rio Grande basin.
COLORADO RIVER MAIN STEM 341 

Transmountain diversions from Colorado River basin above Lee Ferry--Continued

In Wyoming in the Green River basin, Continental Divide ditch diverts water from Little 

Sandy UreeTTTn sec. 25, T. 30 N. , R. 104 W., to land along Lander Creek (tributary to 

Sweetwater River in Platte River basin). The appropriation permit is for 13.76 cfs, but 

no discharge record is available.

In Utah there are 17 tunnels or ditches all of which are equipped with water-stage 

recorders. Records collected by Geological Survey. The locations of these diversions 

are given in the following list.

Strawberry River and Willow Creek ditches divert water from the Strawberry River basin 

to Daniels Creek (a tributary of Provo River). The combined flow is gaged in SEij sec. 34, 

T. 5 S., R. 6 E.

Upper Hobble Creek ditch diverts water from tributary of Strawberry River to Daniels 

Creek. Gage is located in NWij sec. 15, T. 6 S. , R. 6 E,

Lower Hobble Creek.ditch diverts water from tributary of Strawberry River to Daniels 

Creek. Gage is located in NW£ sec. 15, T. 6 S., R. 6 E.

Strawberry tunnel whose west portal is in SW-f sec. 34, T. 7 S. , R. 6 E. , diverts water 

from Strawberry Reservoir on Strawberry River to Diamond Pork in the Jordan River basin. 

Records furnished by Spanish Pork Water Users' Association and include tunnel seepage.

Pairview ditch diverts water from tributaries of San Rafael River and Price River to 

San Pitch River in Sevier River basin. Gage is located in SEt; sec. 26, T. 13 S., R. 5 E.

Candland ditch diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in NW£ sec. 1, T. 15 S., R. 5 E.

Coal Pork ditch diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in SW£ sec. 24, T. 15 S., R. 5 E.

Twin Creek tunnel diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in SE£ sec. 35, T. 15 S., R. 5 E.

Spring City tunnel diverts water from tributary of San Rafael Riv er to San Pitch River.

Gage is located in SE£ sec. 16, T. 16 S., R. 5 E.

Black Canyon ditch diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in SE^ sec. 10, T. 16 S., R. 5 E.

Cedar Creek tunnel diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in SE£ sec. 10, T. 16 S., R. 5 E.

Reeder ditch diverts water from tributary of San Rafael River to San Pitch River. Gage 

is located in NW^ sec. 32, T. 16 S., R. 5 E.

John August ditch diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in NW^ sec. 35, T. 17 S., R. 4 E.

Madsen ditch diverts water from tributary of San Rafael River to San Pitch River. Gage 

is located in SWij sec. 23, T. 17 S., R. 4 E.

Ephraim tunnel diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in NW£ sec. 24, T. 17 S., R. 4 E.

Larsen tunnel diverts water from tributary of San Rafael River to San Pitch River. Gage 

is located in SE£ sec. 10, T. 17 S., R. 4 E.

Horseshoe tunnel diverts water from tributary of San Rafael River to San Pitch River. 

Gage is located in SW£ sec. 2, T. 17 S., R. 4 E.

In Arizona and New Mexico there are no transmountain diversions from the Colorado River 

basin aoove Lee .t'erry.

256684 O - 53 - 23
342 COLORADO RIVER MAIN STEM

Transmountain diversions, in acre-feet, from Colorado River basin above Lee Ferry 

water year October 1950 to September 1951

Colorado

Grand River ditch...

Eureka ditch. .......

Alva B. Adams tunnel

Berthoud Pass ditch.

Moffat water tunnel.

Jones Pass tunnel...

Boreas Pass ditch. . .

Fremont Pass ditch. .

Columbine ditch. ....

Ewing ditch. ........

Wurtz ditch. ........

Twin Lakes tunnel...

Busk-Ivanhoe tunnel.

Larkspur ditch. .....

Tarbell ditch. ......

Tabor ditch. ........

Treasure Pass ditch.

Piedra Pass ditch. . .

Squaw Pass ditch. . . .

Fuchs ditch. ........

Raber-Lohr ditch. . . .

Total in Colorado.

Utah

Strawberry River

and Willow Creek

ditches.

Upper Hobble Creek

ditch.

Lower Hobble Creek

ditch.

Strawberry tunnel

Fairview ditch. .....

Candland ditch. .....

Coal Fork ditch.

Twin Creek tunnel...

Spring City tunnel..

Black Canyon ditch. .

Cedar Creek tunnel..

Reeder ditch. .......

John August ditch. . .

Madsen ditch. .......

Ephraim tunnel. .....

Larsen tunnel .......

Horseshoe tunnel....

Total in Utah.

Oct.

0

0

79

0

930

0

0

0

0

0

0

221

0

0

0

0

0

0

0

0

0

1,230

135

0

0

486

0

C

3

0

0

1

6

6

0

0

15

0

0

652

Nov.

0

0

403

0

179

0

0

0

0

0

0

100

0

0

0

0

0

0

0

0

0

682

0

0

0

268

0

0

0

0

0

0

3

4

0

0

18

0

0

293

Dec.

0

0

1,310

0

0

0

0

0

0

0

0

157

0

0

0

0

0

0

0

0

0

L,470

0

0

0

246

0

0

C

0

0

0

0

0

0

0

12

0

0

258

Jan.

0

0

1,210

0

0

0

0

0

0

0

0

123

0

0

0

0

0

0

0

0

0

1,330

0

0

0

246

0

0

0

0

0

0

0

0

0

0

6

0

0

252

Feb.

0

0

649

0

0

0

0

0

0

0

0

128

0

0

0

0

0

0

0

0

0

777

0

0

0

250

0

0

0

0

0

0

0

0

0

0

6

0

0

256

Mar.

0

0

1,690

0

0

0

0

0

0

0

0

113

0

0

0

0

0

0

0

0

0

1,800

0

0

0

307

0

0

0

0

6

0

0

0

0

0

12

0

0

325

Apr.

0

0

12,550

0

0

0

0

0

0

0

0

155

65

0

0

0

0

0

0

0

0

12,770

0

0

0

591

0

0

0

0

21

0

0

0

0

0

24

0

0

636

May

192

0

16,230

0

5,980

1,120

0

0

0

288

805

5,750

857

24

0

132

0

0

0

0

0

31,380

20

372

373

1,460

0

6

13

26

268

22

61

6

0

0

1,030

90

123

3,870

June

9,200

21

6,940

154

9,210

2,840

42

0

990

763

1,530

22,020

2,120

97

0

149

147

34

109

175

735

57,280

1,200

293

277

16,190

121

145

145

153

1,140

215

200

50

169

47

1,810

738

518

23,411

July

11,630

60

9,590

435

11,660

5,350

114

0

701

272

476

12,680

1,660

0

0

77

13

33

50

0

0

54,800

638

15

4

21,850

704

62

34

23

158

22

40

32

118

22

155

78

60

24,015

Aug.

3,630

43

2,690

127

3,990

1,570

20

0

53

86

130

3,000

431

0

0

38

0

0

0

0

0

15,810

335

0

0

15,520

776

10

8

3

13

0

22

12

12

0

55

4

2

16,772

Sept.

315

0

2,970

0

1,850

256

0

0

0

10

0.8

478

1

0

0

0

0

0

0

0

0

5,880

169

0

0

10,760

216

1

6

0

24

0

6

6

0

0

37

0

0

11,225

Water 

year

24,970

124

56,310

716

33,800

11,140

176

0

1,740

1,420

2,940

44,920

5,130

121

0

393

160

67

159

175

735

185, 200

2 , 500

680

651

68,170

1,820

224

203

205

1,630

260

338

116

299

69

3,180

910

703

81,970

Note.--There is one diversion from the Great Basin to the Colorado River basin. This diversion is 

Tropic and East Fork Canal which diverts water from East Fork Sevier River to tributary on Paria 

River. Gage is located in SWj- sec. 17, T. 36 S., R. 3 W. Figures of diversion, in acre-feet, for 

the 1951 water'year are as follows: October, 68; total for the calendar year, 3,970; May, 691; June, 

837; July, 427; August, 289; September, 84; total for the water year, 2,400.
LITTLE COLORADO RIVER BASIN 343

Little Colorado River above Lyman Reservoir, near St. Johns, Arlz.

Location. Lat 34°20', long. 109°22', in NE-jSE-f sec. 27, T. 11 N., R. 28 E., on right bank 

1 mile downstream from Coyote Creek, 4j miles upstream from Lyman Dam, and 13 miles 

south of St. Johns.

Drainage area.--747 sq mi,

Records available.--April 1940 to September 1951.

Page.--Water-stage recorder at present site since Oct. 28, 1940. Staff gages at various 

sites and daturas within 1 mile upstreanf Apr. 10-26, Aug. 2 to Oct. 27, 1940. Apr. 27 

to July 25, 1940, water-stage recorder at site 600 ft upstream at datum 1.70 ft higher. 

Altitude of gage, about 6,050 ft, from topographic map.

Average discharge. 11 years, 21.5 cfs.

Extremes. Maximum discharge during year, 3,200 cfs Aug. 2 (gage height, 12.4 ft), from 

rating curve extended above 500 cfs on basis of slope-area determination of peak flow; 

no flow for many days.

1940-51: Maximum discharge, 16,000 cfs July 25, 1940 (gage height, 17.1 ft, present 

datum from floodmarks) by slope-area determination of peak flow and reservoir inflow 

studies; no flow for many days in 1950, 1951.

Remarks.--Records poor. Flow regulated by many small reservoirs, combined capacity about 

157500 acre-ft. Diversions for irrigation of about 6,700 acres above station.

Rating tables, water year 1950-51, except periods of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1 to Nov. 2, July 21

to Aug. 2, Sept. 6-13, 19-30)

Oct. 1 to Jan. 31

2.7

2.8

2.9

3.0

3.1

3.2

.1

.4

1.1

2.5

4.5

Feb. 1 to Aug. 2 Aug. 2 to Sept. 30

3.4 

3.8

2.5

8.4

25.5

4.2 

5.0 

6.0 

7.0

133

282

506

4.65 

4.7 

4.S 

5.0

0 

.13

1.9 

8.0

5.3

5.5 

6.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.3

.3

.2

.2

.2

.1

7?

.2

.1

.1

.1

.1

.1

.2

.2

.2

.3

.3

J3

.4

.3

.3

.3

.2

.2

*.2

.2

.3

.3

.3

7.9

0.25

16

Nov.

0.3

'.5

1.5

1.5

1.8

T77

1.7

.9

.8

.8

.8

.8

.7

.6

.7

.7

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

*.8

.9

.9

-

26.7

0.89

53

Dec.

0.8 ~T9~

.9

.8

.8

1.0

.9

1.0

1.0

1.0

1.0

1.0

1.5

2.4

5.1

2.7

2.4

2.5

*1.9

1.2

1.5

1.4

1.1

1.5

a. 7

2.1

2.1

2.1

2.1

2.1

2.2

48.7

1.57

97

Jan.

2.7

3.9

3.3

2.9

2.9

2.5

3.3

3.5

3.3

3.1

2.2

27T

2.7

3.5

3.7

2.7

2.9

2.7

2.7

2.9

2.5

2.7

*2.7

2.7

2.5

2.4

2.4

2.4

2.2

3.1

4. _1

89.5

2.89

178

Feb.

6

7

7

7

8

7.1

6.5

6.2

6.2

5.2

5.8

5.2

5.5

*5.5

5.8

6.5

5.8

5.5

6.2

5.8

6.2

4.3

TTS

4.6

5.2

5.5

5.2

5.2

_

-

164.4

5.87

326

Mar.

5.2

5.2

BT2- 5.8

5". 5

5.2

4.9

4.9

5.2

4.9

4.9

4.6

*4.6

4.6

4.6

4.6

5.2

5.2

5.2

5.5

5.5

5.5

5.2

2.1 Z7T

2.7

*4.0

4.0

3.2

2.7

2.3

140.3

4.53

278

Apr.

2.1

2.0

1.8

1.8

1.8

1.5

1.3

1.3

1.2

1.0

*1.0

.8

.7

.7

.7

.4

.1

0

.4

2.7

2.1

1.3

*1.0

2.5

2.5

3.7

5.2

3T7

3.4

3.7

-

52.4

1.75

104

May

4.3

5.2

5.2

4.6

4.9

4.3

4.0

7.4

5.8

5.2

4.9

4.3

3.4

tt

*3.7

4.3

5.2

4.6

4.9

5.5

6.8

8.1

7.4

8.4

9.5

11 "S.4

6.5

5.8

5.2

4.3

176.5

5.69

350

June

4.6

ITS

4.0

3.7

3.7

4.0

3.0

2.5

2.1

1.8

1.3

1.5

1.2

1.3

.9

.7

.6

*.4

.1

0

0

0

0

0

0

0

0

0

0

0

-

41.4

1.38

82

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

*0

0

168

T3

2.1

*.4

19

17

2.0

3.4

1.8

2.1

4.9

233.7

7.54

464

Aug.

57

*315

TBT

61

21

11

*8.0

5.7

6.4

4.7

3.6

2.7

1.4

.5

*.5

.1

.1

0

U

0

5.3

1.9

1.5

2.2

4.4

3.9

2.5

*6.4

9.8

13

14

620.6

20.0

1,230

Sept.

13 -^.5

7.3

6.4

6.0

4.7

4.1

3.6

2.2

1.5

1.4

1.2

1.0

al

a. 9

a. 8

a. 7

a. 6

*.5

.3

.1

.1

0

0

0

0

0

0

0

0

-

66.9

2.23

133

Calendar year 1950: Max 33 Min 0 Mean 4.95 Ac-ft 3,590

Water year 1950-51: Max 315 Min 0 Mean 4.57 Ao-ft 3,310

Peak discharge (base, 400 cfs).. July 21 (7 p.m.) 1,550 cfs (9.7 ft); Aug. 2 (8 p.m.) 3,200 cfs 

(12.4 ft); AugT 4 (6 p.m.) 484 cfs (7.95 ft).

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of adjoining good record.

Note. Stage-discharge relation affected by Ice Nov. 26-30, Dec. 2, 3, 6, 7, 11-13, 17-31, Jan. 

2-22, 24-27, Jan. 31 to Feb. 4, Feb. 14-16, 18, 20, 28, Mar. 4, 5, 12, 18, 19.
344 LITTLE COLORADO RIVER BASIN

Lyman Reservoir near St. Johns, Ariz.

Location. Lat 34°22", long. 109°23' , in SW^NEv sec. 9, T. 11 N., R. 28 E., in control 

tower of Lynian Dam on Little Colorado River, 9 1/3 miles south of St. Johns.

Drainage area. 790 sq mi.

Hecorda available . --May 1940 to September 1951.

uage. water-stage recorder. Altitude of gage is about 5,920 ft (from river-profile map).

Extremes . --Maximum contents during year, 4,500 acre-ft Oct. 1 (gage height, 30.2 ft); no 

storage available to Lynian Canal July 28 to Aug. 1, Aug. 23 to Sept. 17, Sept. 29, 30, 1951 

except by pumping; reservoir empty Sept. 18-28.

1940-51: Maximum contents, 25,500 acre-ft May 25-31, 1941 (gage height, 52.80 ft); 

reservoir empty Sept. 18-28, 1951; no storage available to Lyman Canal Sept. 11 to 

Oct. 7, 1944, July 28 to Aug. 1, Aug. 23 to Sept. 17, Sept. 29, 30, 1951 except by 

pumping; reservoir empty Sept. 18-28, 1951.

Remarks . --Reservoir is formed by an earth and rock-fill dam, rubble faced; dam completed 

ana storage began in 1920; original dam washed out Apr. 14, 1915. Crest of permanent 

spillway raised from 50.0 ft to 56.8 ft during March and April 1949. Capacity, 31,000 

acre-ft between gage heights 20.0 ft (bottom of Lyman Canal) and 56.8 ft (average elevation of spillway crest). No spill occurred this year. Contents between 2.0 ft, sill 

of outlet gates, and 20.0 ft, 4,500 acre-ft (based on survey in 1920), not available 

for release to Lyman Canal but can be released to river channel. Figures given herein 

represent contents above gage height 20.0 ft (bottom of Lynian Canal). Water used 

for irrigation in vicinity of St. Johns. During July to September 1951 water was 

pumped to Lyman Canal when reservoir stage was below 20.0 ft.

Contents at 12 p.m., in acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

,480

,460

,460

,450

,440

,400

,390

,390

,370

,370

,360

,350

,330

,320

,300

,300

,300

,290

,290

,280

,280

,260

,250

,240

,240

,230

,230

,220

,210

4,200

4,200

Nov.

4,190

4,180

4,180

4,170

4,160

4,160

4,150

4,140

4,130

4,130

4,130

4,110

4,100

4,090

4,090

4,080

4,080

4,080

4,070

4,070

4,070

4,060

4,060

4,060

4,050

4,050

4,040

4,050

4,040

4,030

-

Dec.

4,020

4,010

4,010

4,000

4,000

4,000

3,980

3,980

3,980

3,980

3,980

3,980

3,980

3,980

3,970

3,970

3,970

3,970

3,970

3,970

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

Jan.

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,960

3,970

3,970

3,970

3,970

3,970

a3,970

a3,970

a3,970

a3,970

a3,970

a3,970

a3,970

3,970

a3,970

a3,970

a3,970

a3,980

a3,980

3,980

4,010

4,010

Feb.

,020

,O2O

,030

,050

,070

,080

,100

,100

,110

,120

,130

,130

,140

,150

,160

,170

,180

,180

,190

,200

,230

,230

,230

,240

,250

,260

,260

,260

_

_

-

Mar.

4,270

4,290

4,300

4,310

4,310

4,320

4,320

4,330

4,340

4,340

4,350

4,360

4,360

4,370

4,380

4,370

4,370

4,370

4,370

4,370

4,370

4,380

4,380

4,380

4,380

a4,400

4,410

4,410

4,410

4,410

4,400

Apr.

,390

,390

,380

,380

,380

,370

,370

,370

,350

,340

,340

,320

,310

,310

,280

,280

,270

,250

,260

,270

,270

,260

,260

,230

,200

,200

,200

,200

,200

,2OO

-

May

4,200

4,200

4,200

4,200

4,190

4,190

4,180

4,130

4,100

4,060

4,020

3,980

3,940

3,900

3,850

3,830

3,790

3,750

3,740

 3,740

3,740

3,730

3,730

3,730

3,730

3,730

3,720

3,700

3,690

3,670

3,650

June

3,620

3,610

3,590

3,540

3,450

3,370

3,300

3,220

3,140

3,060

2,990

2,900

2,820

2,760

2,710

2,640

2,570

2,480

2,420

2,340

2,280

2,210

2,130

2,050

1,980

1,920

1,850

1,770

1,690

1,610

-

July

1,550

1,470

1,4OO

1,330

1,270

1,200

1,100

1,020

935

841

756

683

604

525

460

4O9

345

a280

a220

a!60

a500

a430

a350

275

185

122

60

0

0

0

0

Aug.

0

804

,200

,280

,290

,290

,250

,210

,140

,070

1,020

946

848

745

651

562

484

389

312

227

185

79

O

0

o

o

0

o

0

0

0

Sept.

a No gage-height record; contents interpolated.

Monthly gage height and contents, water year October 195O to September 1951

Date

Dec. 31. ...................

Jan. 31, 1951. .............

May 31....................

Water year 1950-51. ......

Gage height 

(feet)t

29.69

29.39

29.25

29.35

30.02

28.69

18.55

_

Contents 

(acre-feet)

4,200

4,030

3,960

4,010

4,260

4,400

3,650

_

Change in contents 

during month 

(acre -feet)

-300

-170

-70

-13,840

+50

+250

+140

-200

-550

-2,040

-1,610

0

0

-4,500

t Oage height at 12 p.m.
LITTLE COLORADO RIVER BASIN 345

Lyman Canal below Lyman Reservoir, near St. Johns, Ariz.

Location.--Lat 34°22', long. 109°23', in SW^NE^- sec. 9, T. 11 N., R. 28 E., 45 ft downstream from outlet tunnel in Lyman Dam and 9 1/3 miles south of St. Johns.

Records available. June 1950 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 5,940 ft (from river-profile map).

Extremes.- Maximum daily discharge during year, 29 cfs June 5; no flow for several months. 

IF50-51: Maximum daily discharge, 45 cfs Aug. 31, 1950; no flow for several months.

Remarks. Records good to July 17, poor thereafter. Canal diverts water from Lyman Reservoir for irrigation of about 1,500 acres in vicinity of St. Johns. No diversion between intake and station. Water pumped from river channel to canal above gage July 17 

to Aug. 2 and Aug. 18 to Sept. 7, 1951, periods when elevation of Lyman Reservoir was 

below canal intake.

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

"75 0.5

.5

.5

.5

.4

.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

3.2

.10

6.3

Nov.

(*)

-

0

0

0

Dec.

(*)

0

0

0

Jan.

(*)

0

0

0

Feb.

(*)

0

0

0

Mar.

(*)

(*)

0

0

0

Apr.

(*)

0

0

0

May

0

U

0

0

0

0

7.2

16

TS

15

15

15

15

15

*15

15

15

15

6.9

0

0

0

0

0

0

0

0

0

0

0

0

181.1

5.84

359

June

0

U

7.2

23

29_

28

28

28

28

28

28

28

28

19

17

21

21

*23

23

23

23

22

22

22

22

21

22

26

*25

25

660.2

22.0

1,310

July

24

24

23

23

22

24

28

77

26

24

22

21

19

17

16

12

15

11

8.9

7.5

8.7

alO

all

*12

14

15

14

14

14

14

14

535.1

17.3

1,060

Aug.

13

14

24

T?

11

11

12

*12

11

11

12

16

20

22

*21

18

15

14

13

13

13

13

12

12

12

11

11

12

12

8.5

8.3

426.8

13.8

846

Sept.

*11

10

12

IT

10

9.3

9.1

0

rr

0

0

0

0

0

0

0

0

0*o

0

0

0

0

0

0

0

0

0

0

0

72.4

2.41

144

Calendar year 1950: Max - Mln - Mean - Ac-ft

Water year 1950-51: Max 29 Mln 0 Mean 5.15 Ac-ft 3,730

* Discharge measurement or observation of no flow made on this day. 

a No gage-height record; discharge estimated.
346 LITTLE COLORADO RIVER BASIN

Little Colorado River below Lyman Reservoir, near St. Johns, Ariz.

Location. Lat 34°22', long. 109°23', in SW^NE^ sec. 9, T. 11 N., R. 28 E., 65 ft down-

 stream from outlet tunnel in Lyman Dam and 9 1/3 miles south of St. Johns.

Drainage area. 790 sq mi.

Records available.--April 1941 to September 1951.

Gage Water-stage recorder and concrete control for determination of quantity of water

 released to river channel. Altitude of gage is 5,920 ft (from river-profile map). 

Water-stage recorder on Lyman Reservoir for determination of flow in spillway channel 

three-eighths of a mile north in SW£ sec. 4, T. 11 N., R. 28 E.

Average discharge. 10 years, 2.71 cfs.

Extremes.--Maximum daily discharge during year, 15 cfs Aug. 7-10: no flow Sept. 20-28.

 1341-51: Maximum discharge observed, 603 cfs May 8, 1941 (including 546 cfs of 

spilled water); no flow at times.

Remarks.--Records fair. Record of daily discharge shows all water spilled and released

 From Lyman Reservoir to the river channel, but does not include flow diverted to 

Lyman Canal. See monthly table for combined flow of river and canal.

No flow over Lyman Dam spillway this year. Since 1929 spill has occurred only during 

period Apr. 8 to about May 6, 1932, and Apr. 30 to May 13, 1941. Flow completely regulated by many reservoirs (combined capacity, 51,000 acre-ft, the largest of which is 

Lyman Reservoir (capacity, 35,500 acre-ft). Diversions above station for irrigation 

of about 8,200 acres, including 1,500 acres served by Lyman Canal. Flow past this 

station supplemented by spring inflow downstream used to irrigate an additional 2,000 

acres in vicinity of St. Johns.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, in cubic feet per second)

0.4 

.5 

.6 l.E

3.9

7.0

17

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

T75

.4

.4

.5

.4

.2

.0

1.0

1.0

1.0

.9

.9

.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.6

.2

*.2

.2

.2

.2

.2

25.9

0.84

51

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

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

4.1

0.13

8.1

Jan.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

*.l

.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

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

_

_

-

2.8

0.10

5.6

Mar.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

*.l

.1

.1

.1

.1

3.1

0.10

6.1

Apr.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

5.0

0.17

9.9

May

0.2

T?

.2

.2

.2

.2

.4

.5

.5

.5

.5

.5

.5

.5

*.5

.5

.5

.5

.5

.5

.5

.5

2.2

3.4

37T

3.4

3.4

3.4

3.2

3.2

3.0

37.7

1.22

75

June

3.0

3.2

3.2

3.2

3.0

2.8

2.8

2.0

1.1

1.1

1.2

1.7

2.4

3.4

3.4

3.0

3.2

*3.4

3.4

3.2

2.6

1.5

3.7

4.8

5.1

2.3

1.0

.9

75

.9

-

77.4

2.58

154

July

0.9

.8

.8

.8

.8

.7

.7

.7

.7

.6

.6

.7

1.4

2.4

2.6

2.2

1.8

*1.4

1.8

1.7

3.2

3.2

4.3

6.0

3TT

2.6

2.4

2.6

2.8

3.0

2.0

59.9

1.93

119

Aug.

4.8

6.7

7.8

7.8

7.8

11

15

*I5

15

15

13

8.6

8.6

6.4

*1.8

1.8

1.4

1.1

1.1

1.2

1.2

4.2

2.0

5.4

9.0

9.0

5.2

4.3

3.0

.3

175

195.8

6.32

388

Sept.

.7

.4

.4

. ^§

.8

.5

.2

.7

.8

.8

.9

.2

.7

.0

.8

1.5

.5

.1 *Tl

0

0

0

0

0

0

0

0

0

.1

.2

-

54.2

1.81

108

Combined flow of Little Colorado River and Lyman Canal below Lyman Reservoir.

Mean

Cfsm

In.

Ac-ft

0.94

_

_

58

0.20

_

_

12

0.13

_

_

8.1

0.10

_

_

6.1

0.10

_

_

5.6

0.10

_

_

6.1

0.17

_

_

9.9

7.06

_

_

434

24.6

_

_

[ 1,460

19.2

_

_

1,180

20.1

_

_

1,230

4.22

_

_

251

Calendar year 1950; 

Water year 1950-51:

Max 7.0 

Max 15

Min 

Min

River

0.1 

0

only

Mean 2.28 

Mean 1.30

Ac-ft 

Ac-ft

1,650 

943

Combined

Calendar year 1950: 

Water year 1950-51:

Mean 

Mean 6.45

Cfsm 

Cfsm _

In. - 

In. -

Ac-ft 

Ao-ft 4,660

* Discharge measurement made on this day.
LITTLE COLORADO RIVER BASIN 347

Little Colorado River above Zunl River, near Hunt, Ariz.

Location. Lat 34°38', long. 109MO', in SW^NW^ sec. 2, T. 14 N., R. 25 E., on right 

banR 500 ft upstream from Zuni River and 3 miles northwest of Hunt.

Drainage area.--3,680 sq mi, approximately, including 830 sq mi in closed basin surrounding Quemado, N. Mex.

Records available.--March 1940 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 5,400 ft (from river-profile map).

Average discharge.--11 years, 6.12 cfs.

Extremes. Maximum discharge during year, 70 cfs Aug. 28 (gage height, 2.19 ft); no flow 

for many days.

1940-51: Maximum discharge, 1,100 cfs Aug. 13, 1945 (gage height, 4.13 ft); no 

flow at times in most years.

Remarks. Records fair. Diversions for irrigation of about 11,100 acres above station. 

Considerable regulation by many reservoirs (combined capacity, 54,000 acre-ft), the 

largest of which is Lyman Reservoir (see p. 344).

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

1.1

1.2

1.3

1.4 

1.7

0.0

.6

2.4

6.2

24

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tote]

Mean

Ac- ft

Oct.

0

0

0

0

0

0

.3

0

.4

0

0

0

.3

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.0

0.03

2.0

Nov.

(*)

-

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

^2.

.2

.2

.1

0

0

0

0

0

*0

0

0

0

0

o

0

0

0

0

0

0

0

0.7

0.02

1.4

Jan.

0

0

0

0

.2

.2

.2

.2

.2

.2

.2

.3

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

*.l

.1

.1

.1

.1

.1

.1

.4

.3

4.3

0.14

8.5

Feb.

0.1

.1

.1

.2

.2

.3

1.1

.6

.4

.3

.2

.2

.2

*.l

.2

.2

.2

.2

.3

.3

.4

.4

.2

.2

.4

.8

.4

.2

_

_

-

8.5

0.30

17

Mar.

0,2.

.2

.2

.2

.2

.2

.1

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.1

0

0

0

0

0

0

0

.1

.2

*.2

.2

.2

.2

.1

4.4

0.14

8.7

Apr.

O

0

0

0

0

.1

.1

0

0

0

*0

0

.1

.1

0

0

0

0

.1

.5

.2

.8

*.l

.1

.2

.2

.2

0

0

0

-

2.8

0.09

5.6

May

0

0

0

0

0

0

o

0

0

.1

.1

.1

.1

*.2

.1

.2

.2

.2

.2

.1

0

0

0

0

0

0

0

0

0

.1

.2

1.9

0.06

3.8

June

0.2

.2

.1

0

0

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

-

0.5

0.02

1.0

July

(*)

0

0

0

Aug.

0

0

*0

.5

0

0

0

*0

0

0

0

0

0

0

*0

0

0

0

.1

0

0

1.4

0

0

0

0

.1

19

1.3

0

*0

22.4

0.72

44

Sept.

(*)

-

0

0

0

Calendar year 1950: Max 9.5 Mln 0 Mean 1.05 Ac-ft 763

Water year 1950-51: Max 19 Mln 0 Mean 0.13 Ac-ft 92

Peak discharge (base, 70 efs). AUK. 28 (3 p.m.) 70 efs (2.19 ft).

* Discharge measurement or observation of no flow made on this day.
348 LITTLE COLORADO RIVER BASIN

Little Colorado River near Hunt, Ariz.

Location. Lat 34°39' , long. 109M2', in NE^NW-f sec. 4, T. 14 N. , R. 85 E. , near left 

bank on upstream side of pier of bridge on U. S. Highway 260, 2 miles downstream from 

Zuni River, and 5 miles northwest of Hunt.

Drainage area.--6,280 sq mi, approximately, including 830 sq mi in closed basin surrounding Quemado, N. Mex.

Records available.--May 1929 to October 1933, March 1940 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 5,371.59 ft above mean sea level, datum of 

1929. May 1929 to Aug. 31, 1931, water-stage recorder at site of former bridge 40 ft 

downstream, at datum 0.16 ft lower and Sept. 1, 1931, to October 1933, at datum 2.16 ft 

lower.

Average discharge.--15 years, 22.2 cfs.

Extremes.--Maximum discharge during year, 531 cfs Aug. 28 (gage height, 9.74 ft); no flow 

for many days.

1929-33, 1940-51: Maximum discharge, 8,000 cfs July 28, 1929 (gage height, 16.8 ft, 

present datum); no flow at times in several years.

Remarks. Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Diversions for irrigation above station of about 14,600 acres. Considerable regulation by many reservoirs (combined capacity, about 63,000 acre-ft). 

Zuni River contributes practically all inflow between this station and station above 

Zuni River, near Hunt.

Revisions (water years).--W 1179: 1931-32.

Rating tables, water year 1950-51, except period of ice effect

(gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used June 12-15, Aug. 9-2o)

Oct. 1 to June 15 June 16 to Aug. 19 Aug. 2o to Sept. 3O

3.7 0.02

3.8 .09

3.9 .23

4.0 .5

4.1 0.9

4.3 2.3

4.5 4.6

4.7 8.4

3.9 0.04

4.0 .12

4.2 .62

4.4 2.0

4.6 

4.9 

5.2 

5.6

4.7

12

4.3

4.4

4.5

4.6 

4.8

0

1.0

4.1

5.1 

5.5 

6.0 

7.0 

9.0

170

419

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

0.1

.1

.1

.1

.1

.1

.1

.2

.2

.1!

.1

.1

.2

.2

.1

a.l

a.l

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

3.7

0.12

7.3

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

.1

.1

.1

*.l

.1

.1

.1

-

3.0

0.10

6.0

Dec.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.1

.1

.1

.1

.1

*.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.2

3.6

0.12

7.1

Jan.

 0.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.3

-.6.

7.8

0.25

15

Feb.

0.4

.3

.3

.3

.3

6.0

.8

.5

.5

.3

.2

.1

.1

*.l

.1

.1

.1

.1

.2

.2

.2

.3

.3

.4

.4

.4

.4

.4

_

_

-

13.8

0.49

27

Mar.

0.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.3

.3

*.3

.3

.4

.3

.2

.2

.2

.2

.2

.2

.2

.2

.3

*.3

.3

.3

.4

.4

10.5

0.34

21

Apr.

0.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.2

.5

it

*.3

.2

.2

.2

.2

.2

.2

.2

-

8.1

0.27

16

May

0.2

.2

.2

.2

.2

.1

.1

.2

.2

.2

.2

.2

.2

*.2

.2

.2

^1

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

5.2

0.17

10

June

p.: .

o'

o

0

*0

0

0

0

0

0

0

0

0

0

0

o

0-

1.4

0.05

2.8

July

0

0

0

0

0

0

0

0

0

o

0

0

0

0

o

0

.5

*30

*.2

.1

0

0

0

*0

0

0

0

0

0

0

0

30.8

0.99

61

Aug.

0

0

7.6

50

49

8.0

4.0

«1.0

.2

.2

.1

0

0

0

*0

o

0

0

0

3.0

a. 2

14

2.2

a. 3

a. 2

a.l

1.5

*4O7

71

1.9

*.4

621.9

20.1

1,230

Sept.

0.1

.1

0

o

0

0

o

0

0

0

0

0

0

0

0

0

0

.1

*0

0

0

0

0

0

0

0

0

0

1.1

6.8

-

8.2

0.27

16

Calendar year 195O : Max 18 Min 0 Mean 1.23 Ac-ft 892

Water year 1950-51 : Max 407 Mln o Mean 1.97 Ac-ft 1,420

Peak discharge (base. 600 cfs). No. peak above base 

* Discharge measurement or observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of adjoining good record and records for 

station above Zuni River, near Hunt.

Note. Stage-discharge relation affected by ice most of period Feb. 7-24.
LITTLE COLORADO RIVER BASIN 349 

Silver Creek near Shumway, Ariz.

Location. Lat 34°22'30", long. 110°00'30", in SW^SE^ sec. 4, T. 11 N., R. 22 E., on right

 bank 1,000 ft downstream from overflow channel from Mexican Lake, 1 mile downstream 

from dam forming Daggs Reservoir, 4| miles southeast of Shumway, and Bj miles north 

of Show Low.

Drainage area. 172 sq mi, of which 53 sq mi are considered as noncontributing.

Records available.--March 1942 to September 1951. Monthly records only prior to October 

1944.

Gage.--Water-stage recorder at present site and datum since May 12, 1945. Datum of gage

 Ts 5,913.48 ft above mean sea level, datum of 1929. Prior to May 12, 1945, staff gage 

three-quarters of a mile upstream at different datum.

Average discharge.--9 years, 11.2 cfs.

Extremes. Maximum daily discharge during year, 25 cfs May 9-14; minimum daily, 0.7 cfs 

on several days.

1942-51: Maximum discharge, 174 cfs Mar. 8, 1949; minimum daily, 0.2 cfs on many 

days in 1945, 1946.

Remarks.--Records fair except those for period of no gage-height record, which are poor. 

Flow regulated by Daggs Reservoir and Mexican L»ke (combined capacity, 4,630 acre-ft 

below elevation 5,965.5 ft, bottom of spillway channel from Mexican Lake to Silver 

Creek). No overflow from Daggs Reservoir and Mexican Lake this year. No diversions 

for irrigation above Daggs Reservoir.

Discharge, in cubic feet per second, water year October 1950 to September 1951

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.

12

12

12

12

12

12

12

11 

11

12

12

12

12

12

12

12

13

12

12

12

9.4

6.2

11

11

11

*11

11

11

11

11

11

353.6

11.4

701

Nov.

11

11

11

11

11

9.5

8.6

11 

11

11

11

11

11

ri

12

11

11

11

9.0

10

11

11

11

7.7

-i!

1.1

1.2

1.3

*1.4

1.4

-

262.1

8.74

520

Dec.

.4

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

* .3

1.3

1.3

1.2

.9

79

.9

.9

.9

.9

.9

.9

38.0

1.22

75

Jan.

Q

To'.0

.0

.0

.0

.0

.0 

.0

.0

.0

.0

.0

.0

.0

1.0

1.0

.9

.9

.9

.9

.9

.9

*.9

.9

.9

.9

.8

78

1.0

.9

29.5

0.95

59

Feb.

0.9

1.0

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

.9

*1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.9

.9

1.0

1.0

1.0

1.0

1.0

_

_

-

26.6

0.95

53

Mar.

1.0

1.0

1.0

1.0

.9

.9

.9

.8 

.9

.9

.9

.9

*.9

.9

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

il

*.8

.8

.8

26.

0.8

52

Calendar year 1950 : Max 32. Min 0.6 Me

Apr.

0.8

.8

.7

.7

.8

.8

.8

.1 

.8

.8

.8

.8

.8

.8

.8

.8

.8

.9

.9

.2

3.2

6,8

6.5

*6.2

6.5

6.8

6.8

6,8

7.2

18

-

103.5

3.45

205

May

21

22

22

23

24

24

24

24 

25

25

25

25

25

25

24

*19

16

16

16

16

16

IS

16

17

19

18

18

19

22

22

22

646

20.8

1,280

June

22

22

22

22

22

22

22

21 

21

21

21

21

21

21

21

21

21

21

*21

21

31

21

20

20

20

20

21

22

22

22

-

636

21.2

1,260

July

22

22

22

22

22

22

22

H23

23

23

23

23

23

23

23

19

a. 8

a. 8

a. 7

a. 7

a8.6

a!4

*16

16

16

19

19

19

19

552.6

17.8

1,100

Aug.

19

19

13

13

13

13

13

13 

12

12

12

16

16

16

15

*15

15

15

15

14

14

14

14

14

13

13

13

13

1.4

1.3

1.2

400.9

12.9

795

Sept.

irl

1.2

1.3

1.3

5.0

9.0

9.0 

9.0

9.0

7.2

3.3

3.5

4.6

6.6

6.6

6.7

6.7

13

*il

17

17

17

16

16

16

16

16

16

16

-

285.4

9.51

566

in 11.5 Ac-ft 8,300

Water year 1950-51 : Max 25 Min 0.7 Mean 9.21 Ac-ft 6,670

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and release from 

Daggs Reservoir.
350 LITTLE COLORADO RIVER BASIN

Show Low Creek at Show Low, Ariz.

Location. Lat 34°15'10", long. 110°01'40", in NEj sec. 20, T. 10 N., R. 22 E., on left 

bank at downstream side of bridge on U. S. Highway 60 at Show Low.

Drainage area. 87 sq mi, approximatley.

Records available.--January 1941 to September 1951. Monthly records only prior to October 

1944.

Gage.--Water-stage recorder prior to July 27, 1951. Datum of gage is 6,309.22 ft above mean 

sea level, datum of 1929. Temporary staff gage 200 ft upstream at different datum used 

after July 26. All peak elevations converted to datum in use prior to July 27, 1951.

Average discharge. 10 years (1941-51), 8.55 cfs.

Extremes.--Maximum discharge during year, about 170 cfs Aug. 28 (gage height 3.10 ft, fron 

high-water mark); no flow for many days.

1941-51: Maximum discharge, 3,200 cfs Mar. 14, 1941 (gage height, 9.30 ft), from 

rating curve extended above 600 cfs on basis of velocity-area studies and logarithmic 

plotting; no flow at times in most years.

Remarks.--Records poor. Diversions above station for irrigation of about 1,600 acres of 

which part is below station. Flow regulated by several small reservoirs, largest of 

which are Lakeside and Scott Reservoirs (combined capacity, 2,400 acre-ft).

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11 

12

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

.2

.2

.2

.2

.2

.1

.2

.2

.2 

.4

.4

.2

.4

.4

.4

.6

.4

.4

.4

.4

.4

.2

a. 3

*.4

.2

.2

.2

.2

.4

8.8

0.28

17

Nov.

0.2

.1

0

.

t

.

t

.2

.2

.2

.2

i5.

.2

.3

.3

.2

.2

.2

.2 *.2

.1

.1

-

4.7

0.16

9.3

Dec.

0.1

.1

.1

.1

.3

.4

.3

.2

.2

.2

.3

.2

.3

.3

.2

.3

.9

.9

.8 *.8

.8

.8

.8

.8

.8

.8

1.1

T7T

!9.9'

.9

16.7

0.54

33

Jan.

0.9

.8

.6

.7

.5

.5

.5

.6

.6

.4

.4 

.5

3.7

274

2.7

3.0

2.0

.9

.9

.5

.6

.6

.4 *.4

.2

.2

.1

7T

.1

.3

.2

26.3

0.85

52

Feb.

~7T 0.1

.2

.3

.2

.2

.2

.1

.1

.1

.1 

.1

.2

*.2

.1

.1

.1

.1

.1

^4

.2

.1

.1

.2

.2

.2

.2

.2

_

_

-

4.5

0.16

8.9

Mar.

0.2

.2

.4

.4

.2

.2

.2

.4

.2

1.7

3.8 

277

*1 . 1

is

.3

.4

.4

.1

7?

.2

.2

.2

.1

.1

.2

*.3

.2

.1

.2

.1

.1

15.6

0.50

31

Apr.

0.1

.1

.1

.1

.1

.2

tf

.2

.2

.2 

*.2

.2

.2

.2

.1

.1

.1

.2

.1

O

O

0

*0

0

O

0

0

.2

.2

-

3.6

0.12

7.1

May

0.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1 

.2

.2

.2 *.2

.2

.3

.2

.2

.2

.1

.3

.5

.3

4.0

.9

.2

.5

.3

.1

.1

10.5

0.34

21

June

0.1

.2

.2

.4

i§L

.4

.5

.4

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.3 *.l

a.l

a.l

a.l

a.l

o

0

0

o

0

0

0

-

4.4

0.15

8.7

July

0

O

0

0

0

O

0

o

0

0

0

o

a.l

0

o

o

 if2- *o

o

0

.1

0

.1

.1.1

.1

o

0

0

0

0

0.8

0.03

1.6

Aug.

0.1

3.8 * .1

O

0

0

0

0

0

o

o 

o

0

o

0

o

0

o

o

0

0

0

0

0

0

0

o

*30

15

4.6

.2

57.8

1.86

115

Sept.

*0

0

0

0

.3

.6

9.6

a3.5

al.O

.4

.2 

.2

.3

0

0

a.l

.2

.2

.2 *.2

.1

.7

a. 6

.4

.2

O

0

0

17~S".7

-

44.7

1.49

89

Calendar year 1950 : Max 132 Min O Mean 1.94 Ac-ft 1,400

Water year 1950-51 : Max 3O Min 0 Mean 0.54 Ao-ft 394

Peak discharge (base. 150 cfs) T -- Aug. 28 (12 m.) about 170 cfs (3.10 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge interpolated or estimated on basis of adjoining good record, 

recorded range in stage, and weather records.
LITTLE COLORADO RIVER BASIN 351

Silver Creek near Snowflake, Ariz.

Location. Lat 34°40'00", long. 110°02'30", in SW^NW^ sec. 29, T. 15 N., R. 22 E., on left 

bank 6 miles upstream from mouth and 14 miles north of Snowflake.

Drainage area.--886 sq mi.

Records available.--October 1950 to September 1951.

Gage. Water-stage recorder since Dec. 16, 1950. Altitude of gage is 5,245 ft, from riverprofile map.

Extremes. Maximum discharge during year, 3,780 cfs Aug. 28 (gage height, 10.5 ft); minimum 

discharge, 0.5 cfs July 5, 11-14.

Remarks.--Records good. Diversions for irrigation above station of about 6,600 acres.

Flow regulated by several reservoirs, combined capacity about 7,500 acre-ft, not including 

Lone Pine Reservoir.

Rating table, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second)

1.3 0.3

1.4 .7

1.5 1.9

1.7 7.0

1.9 14

2.2 34

2.5 67

3.O 145

4.0 370

5.0 694

7.0 1,570

9.0 2,730

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

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.

1

31

1

61

Nov.

2

-

60

2

119

Dec.

, 2

*1.9

1.6

1.7

1.9

*2.1

1.9

1.6

1.4

1.4

1.3

1.7

2.6

1.4 

1.3

1.1

1.4

56.3

1.82

112

Jan.

2.6

1.7

1.6

2.8

3.3

3.5

276

2.4

1.9

1.6

2.4

3.3

5.5

3.5

1.9

2.4

2.8

2.4

2.1

1.6

1.4

*1.6

2.6

2.1

1.9

1.6

1.7

1.7 

1.6

2.4

3.5

72.0

2.32

143

Feb.

1.6

1.0

1.1

1.9

5.7

3.7

7.3

5.5

2.8

2.6

2.1

1.7

*1.9

2.6

1.7

2.4

3.5

2.1

2.1

2.4

1.9

2.1

1.9

1.7

2.1

*2.1

1.9

1.6

_

-

62.8

2.24

125

Mar.

1.6

2.1

1.9

1.6

1.6

1.4

1.4

1.6

1.6

1.4

1.6

1.3

1.1

TTs

*1.9

1.4

1.4

1.4

1.7

1.9

1.6

1.3

1.9

1.7

1.7

*2.4

3.5

i!e

2.1

2.6

53.7

1.73

107

Apr.

1.9

1.7

1.7

1.7

1.7

1.7

1.9

1.7

1.6

1.3

1.0

1.6

1.4

1.6

1.6

1.4

.9

1.1

.9

1.4

1.4

1.1

.9

*.9

.8

.7

78

.9

.8

.9

-

59.0

1.3

77

Calendar year 195O: Max - Mln - Mean -

May

1.3

1.3

1.6

1.0

.9

1.3

1.3

.9

.9

1.4

1.6

1.4

1.1

1.4

2.4

*2.4

5.0

276

1.3

.9

.9

1.0

1.1

.9

.9

.9

.9

.7 

.7

i. o

39.2

1.26

78

June

~~7T 0.6

.7

.7

1.0

.9

.8

1.1

1 .0

.9

1.0

.9

1.1

1.0

.9

.9

.9

.9

.9 *.7

.7

.7

.8

.8

.9

.8

.7

.8 

.8

.7

-

25.3

0.84

50

July

0.7

.8

.7

.6

.6

.9

.8

.7

.6

.6

.5

.5

.5

1.0

11

*40

*7.6

*21

*54

7.8

3.3

5.3

3.7

1.3

1.4

2.1

1.6

2.8 

6.5

4.9

1.1

249.9

8.06

496

Aug.

1.1

*102

*79

7.6

56

55

8.0

6.0

1.7

1.5

2.1

1.0

.8

.9

1.9

*1.1

1.0

.8

475

4.5

2.1

1.6

1.5

2.8

3.3

1.4

2,220 

594

128

53

5,324.9

107

6,590

Sept.

*23

18

15

11

8.3

5.9

4.5

3.7

5.0

6.2

5'. 6

3.3

5.2

6.2

3.5

2.4

5.0

5.7

2.1

*1.6

1.7

1.4

1.7

1.4

1.5

1.4

1.7

1.4 

1.7

9.1

-

159.2

5.31

316

Ac-ft -

Water year 195O-51: Max 2,220 Mln O.5 Mean 11.4 Ac-ft 8,27O

Peak discharge (base, 1.OOO efs).--Aug. 28 (5:30 p.m.) 3,78O cfs (1O.5 ft). 

* Discharge measurement made on this day.

Note. Discharge Oct. 1 to Dec. 15 estimated on basis of records for station near Woodruff and 

Little Colorado River near Woodruff and at Holbrook.
352 LITTLE COLORADO RIVER BASIN

Sliver Creek near Woodruff, Arlz.

Location.--Lat 34°44', long. 110°02', In NWiNEir sec. 5, T. 15 N., R. 22 E., on left bank

hair a mile upstream from mouth and 3 miles south of Woodruff. Control for station

except at medium stages Is crest of diversion dam 1,700 ft downstream.

Drainage area. 942 sq ml,

Records available.--April 1929 to October 1933, October 1935 to September 1951 (fragmentary 

since 194Y).

Gage. Water-stage recorder. Altitude of gage is 5,196 ft {from river-profile map). 

Average discharge.--16 years (1929-33, 1935-46, 1950-51), 25.0 cfs.

Extremes.--Maximum discharge during year, 4,440 cfs Aug. 28 (gage height, 8.25 ft), from 

rating curve extended above 1,900 cfs on basis of slope-area determination at gage height 

12.37 ft; no flow for many days.

1929-51: Maximum discharge, 11,000 cfs July 26, 1940 (gage height, 12.37 ft), from 

rating curve extended above 3,700 cfs on basis of slope-area determination of peak flow; 

no flow during periods In spring and summer of most years.

Remarks.--Records fair. Diversions above station for irrigation of about 7,200 acres ineluding 600 acres served by Woodruff Canal. Flow regulated by several reservoirs upstream. Records show discharge over dam and do not include flow In Woodruff Canal that 

diverts at dam. Canal flow Aug. 8 was 7.13 cfs.

Revisions (water years).--W 1089; 1929(M).

Rating tables, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second)

o Nov. 13, Apr. 3 to 

May 21 to Sept. 3O

May 17,

2.0 

2.4 

3.0

4.0 670

5.0 1,190

6.0 2,000

7.0 3,010

. 14 to Apr. 

May 18-20

2.9 

6.2 

9.8

Discharge, in cubic feet -per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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

0

1.7

~3.1

0

0

.1

.2

.1

.2

0

0

0

*0

0

0

0

1.0

1.0

.1

0

0

0

0

0 

.2

.2

.1

8.5

0.27

17

Nov.

0

0

0

0

0

.5

2

2

1.5

1

1

2

3

7

6

6

6

9

15

10

8

8

8

B

8

* .2

.2

-

147.4

4.91

292

Dec.

7.2

7.0

6.7

6.5

6.7

6.8

6.5

6.8

7.0

6.5

7.0

7.4

8.1

7.6

7.0

6.B

6.7

*6.5

6.5

6.7

6.8

6.7

6.3 

6.2

6.5

6.3

7.2

7.0 

6.5

6.2

6.2

209.9

6.77

416

Jan.

7.6

7.6

7.9

7.4

B.5

8.5

8.3

7.6

7.9

7.4

7.2

8.5

9.0

8.1

6.8

7.0

7.6

7.4

7.0

6.7

6.2

»6.0

7.0 

7.2

6.8

6.3

6.2

6.3 

6.0

7.7

9.4

229.1

7.39

454

Feb.

7.7

6.2

6.5

6.8

B.I

873" 9.2

8.1

7.7

7.4

7.0

6.2

*6.1

6.2

6.5

6.2

7.7

6.8

7.0

6.5

6.3

6.2

5.7 

5.7

6.2

6.0

5.7

5.7

_

-

189.7

6.7B

376

Mar.

5.3

6.2

6.2

6.5

5.3

5.7

5.2

5.3

5.7

5.5

5.3

5.5

5.3

5.3

*5.B

6.0

5.7

5.2

5.2

5.8

5.B

5.3

5.5 

6.3

5.7

*7.2

9.0

7.7 

6.2

5.7

5.1

181.5

5.85

360

Apr.

6.8

672

1.5

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 

0

0

-

14.5

0.48

29

May

0

0

0

0

0

0

0

0

0

0

0

o

0

0

0

*0

0

2.7

5.8

1.0

0

0

0 

0

0

0

0

0 

0

0

0

9.5

0.31

19

June

(*)

-

0

0

0

July

0

0

0

0

0

0

0

0

o

0

o

0

0

o

30

~T.6 90

19

48

10

6.4

4.5

2.4 

.1

0

0

0

0 

4.3

4.5

.2

227.0

7.32

450

Aug.

1.1

110

122

18

25

55

11

5.2

2.0

0

.3

0

0

O

0

*0

0

o

0

.4

7.6

2.4

1.7 

0

12

3.8

3.8

2.770 

843

90

51

4,135.3

133

8,200

Sept.

*30

21

19

12

9.2

*6.B

6.0

5.2

6.0

6.0

6.0

5.2

5.2

8.4

6.0

4.5

4.5

4.5

4.5

3.B

3.8

3.B

3a 

3.1

3.1

3.1

3.8

3.1 

3.8

5.2

-

209.7

6.99

416

Calendar year 1950: Max - Min - Mean - Ac-ft -

Water -year 1950-51 : Max 2,770 Min 0 Mean 15.2 Ac-ft 11,030

Peak discharge (base, 1,000 cfs). Aug. 28 (6:30 p.m.) 4,440 cfs (8.25 ft). 

* Discharge measurement or observation of no flow made on this day.

Note. No gage-height record Oct. 29 to Nov. 28; discharge estimated on basis of records for related 

stations.
LITTLE COLORADO RIVER BASIN 353

Little Colorado River at Woodruff, Arlz.

Location. Lat 34°47' , long. 110-03', In IffiiSWi sec. 17, T. 16 N. , R. 22 E., on left bank 

on county bridge In Woodruff and 3f miles downstream from Silver Creek

Drainage area. --8, 100 sq mi, approximately.

riecoras aWTTable March 1905 to December 1908, December 1915 to December 1919 (fragmentary) , April 1929 to December 1933, September 1935 to September 1951

Gage. --Water-stage recorder at present site since Sept. 22, 1949. Datum of gage is 

5,129.0 ft above mean sea level (from river-profile survey, based on datum of 1929) 

Prior to December 1908, staff gages at various datums within quarter of a mile upstream 

?ooA ' ' ° Deo - 31> 1919> water-stage recorder, 1.5 miles downstream, and July 4, 

1929, to Sept. 21, 1949, water-stage recorder, 1.7 miles downstream at datum 5 5 ft 

lower.

Average discharge. 22 years, 1905-6, 1916-17, (1929-33, 1935-51), 61 8 cfs

iax re me s.- -mximum discharge during year, 8,290 cfs Aug. 28 (gage height, 19 75 ft)- no 

now for several days during April to July

1929-51: Maximum discharge, 13,000 cfs July 26, 1940; no flow for some days in 

spring or summer of most years.

Maximum discharge recorded, 25,000 cfs Dec. 5, 1919 (gage height, 12.0 ft, datum 

then in use), from rating curve extended above 2,000 cfs; maximum gage height recorded 

12.7 ft, datum then in use, Jan. 19, 1916 (discharge not determined).

Revisions . --The maximum discharge for the water year 1919 has been revised to 4 600 

Pa °rU=oV a ' gS helght ' 5 ' 4 ft)l superseding figure published in Water-Supply

Remarks . --Records good except those for periods of ice effect or no gage-height record, 

wTiTch are fair. Diversions above station for irrigation of about 22,000 acres. Some 

regulation by reservoirs above station, (combined capacity, about 71,000 acre-ft, not 

including Lone Pine Reservoir). Records of chemical analyses, water temperatures, and 

sediment loads for the water year 1951 are given in Water-Supply Paper 1200.

Revisions (water years). --W 1049: 1917. Revised figures of discharge, in cubic feet per second, 

ror my 1-ia, iyub, are given herewith. They supersede those published in Water-Supply 

Papers 211 and 1049.

Day

May 1 

2 

3

4 

5

Discharge

99 

112 

120 

131 

112

Month

Water year 1905-6... 

Calendar year 19O6..

Day

May 6 

7 

8 

9 

10

Cfs-days

1,346 

53,821 

42,572

Discharge

92 

140 

102 

81

70

Maximum

140 

10,000 

2,280

Day

May 11 

12 

13

Minimum

5 

1 

1

Mean

43.4 

147 

117

Discharge

45 

25 

21

Runoff in 

acre-feet

2,670 

106,800 

84,450

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.6

78

.9

1.1

1.5

T74

1.2

1.0

1.0

1.0

1.0

1.2

1.4

1.0

1.0

*.8

1.0

1.0

1.2

1.2

1.4

1.2

1.0

1.0

.8

.8

.8 

1.0

1.2

1.2

32.6

1.05

64

Nov.

1.0

1.0

.8

75

.8

.8

1.4

2.0

1.8

1.2

1.2

1.6

2.4

6.6

5.1

5.1

5.1

7.2

14

TT

7.8

7.2

7.2

8.5

7.8

7.2

6.6

6.6 

*6.6

6.6

-

143.0

4.77

284

Dec.

6.6

6.6

6.6

6.1

6.1

6.1

6.1

6.1

6.1

5.6

5.6

6.1

6.6

6.1

6.1

5.6

5.6

*5.6

5.1

4.3

4.3

4.0

4.0

3.3

bTTe

b3.6

b4.7

b4.3 

b4.0

4.7

4'. 7

163.9

5.29

325

Jan.

5.6

b6.6

b5.1

bTTl

b7.2

6.6

b6.6

b6.1

b6.6

b6. 6

b5.6

6.1

7.2

b6.3

b6.1

5.1

b5.6

5.6

6.1

5.6

5.6

*5.6

5.6

5.6

5.1

5.1

5.1

5.1 

5.6

5.6

5.6

182.0

5.87

361

Feb.

a6

a6

a6

a6

a7

7.2

7.2

6.6

7.8

7.8

7.2

6.6

*5.6 671

6.1

6.1

6.6

7.2

7.2

6.6

6.6

6.6

6.1

6.1

6.6

6.1

5.6

5.6

_

-

182.2

6.51

361

Mar.

5.6

6.1

6.

6.

5.

5.

4.

4.

5.

5.

4.

4.

4.

*5.

5.

5.

5.

4.

5.

5.

5.

4.

4.

5.

5.

*5.6

7.2

^75 

6.1

5.1

4_._3

164.2

5.30

326

Apr.

6.6

6.1

4.7

2.2

1.8

1.8

1.8

1.6

1.4

1.0

.8

.7

.8

.6

.6

.5

.1

0

0

.4

.4

.2

.2

*.l

.1

.2

.2

.2 

.2

.2

-

35.5

1.18

70

May

0.2

.3

.3

.3

.3

.4

.4

.3

.3

.4

.3

.3

.4

.5

.6

*.8

1.0

1.6

5.6 375-

1.0

.4

.2

.1

.1

0

0

0 

0

0

0

19.1

0.62

38

June

(*)

0

0

0

July

0.1

0

0

0

0

0

0

0

0

0

0

0

0

.1

.7

*100

*15

*175

*131

170

26

14

a2

al

*.4

.3

.6

6.1 

14

21

7.0

684.3

22.1

1,360

Aug.

6.2

257

289

415

124

55

a20

*12

3.4

1.3

.6

.6

.2

.2

.1

*.2

.2

.2

.2

34

19

3.7

16

14

13

5.6

4.6

1-4,740 

*2,820

a200

alOO

9,155.3

295

18,160

Sept.

*65

3T

23

14

12

*8.6

7.2

6.5

5.8

5.2

5.2

3.5

3.0

7.9

6.5

3.5

3.0

4.0

4.0

*3.0

2.5

2.2

1.8

T78

1.8

1.8

1.8

1.8 

3.5

5.2

-

252.1

8.40

500

Calendar year 1950: Max 766 Mln o Mean 9.66 Ao-ft 7,000

Water year 1950-51: Max 4,740 Mln o Mean 30.2 Ac-ft 21,850

Peak discharge (base. 1.900 efs).--Aug. 28 (9 p.m.) 8,290 cfs (19.75 ft). 

* Discharge measurement or observation of no flow made on this day.

a No gage-height record} discharge estimated on basis of adjoining good record and records for 

stations near Hunt and on Silver Creek near Woodruff, 

b Stage-discharge relation affected by ice.
354 LITTLE COLORADO RIVER BASIN

Little Colorado River at Holbrook, Ariz.

Location.--Water-stage recorder, lat. 34°53 I 50", long. 110°09i40", in SW&5W£ sec. 6, T. 

17 N., R. 21 E., near right bank on downstream side of bridge on U. S. Highway 260 

at Holbrook and 2j miles downstream from Puerco River.

Drainage area.--11,300 sq mi (approximately).

Records available.--March 1905 to December 1909 (May 1907 to December 1909, gage heights 

only), September 1949 to September 1951.

Gage.--Water-stage recorder at present site since Sept. 14, 1949. Datum of gage is 

5",062.87 ft above mean sea level, datum of 1929. March 1905 to December 1909, staff 

gage at former highway bridge Just upstream from present bridge, at different datum.

Extremes.--Maximum discharge during jear, 8,700 cfs Aug. 28 (gage height, 8.80 ft); no 

flow at times during summer months.

1905-9, 1949-51: Maximum daily discharge, 20,200 cfs Nov. 27, 1905; no flow at 

times May to July 1951.

Peak of flood of Sept. 19, 1923, was 60,000 cfs computed from cross section and 

slope of water surface by Corps of Engineers, whose studies indicate that this was 

probably the greatest flood since 1870.

Remarks.--Records fair except those for periods of ice effect or no gage-height record, 

which are poor. Diversions above station for irrigation of about 23,000 acres. Some 

regulation by reservoirs (combined capacity, about 71,000 acre-ft).

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Apr. 16 to May 4, May 28 to July 16, 

July 24 -28, Aug. 3-5)

Oct. 1 to Aug. 28 Aug. 29 to Sept. 30

5.4 0

5.5 .7

5.6 2.0

5.7 4.5

5.8

5.9

6.0

6.1

6.2 66

6.3 100

6.4 156

6.6 365

7.0 970

7.5 1,980

8.0 3,750

8.5 6,350

1.8

100

4.7 

5.0 

5.5 

6.0

7.0

Discharge, In cubic feet per second, water year October 1950 to September 1951

194

432

1,040

1,840

3,820

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21?o

23

24

25

26

27

28 

29

30

31

Total

Mean

Ac- ft

Oct.

1.4

2.2

1.7

1.9

1.7

1.2

275

2.9

77?

Z.I

2.7

2.9

2.9

2.7

2.3

2.5

Z.3

2.3

2.3

2.3

2.3

2.3

2.9

2.9

2.7

*Z.7

2.5

Z.7 

2.3

2.3

Z.9

74.6

2.41

148

Nov.

3.5

3.5

3.5

3.2

372

3.2

4.1

5.3

5.3

4.5

a4

a4

a5

a6

a8

a7

a6

a6

12

17

12

11

10

10

10

10

*10

8.6 

8.6

8.0

212.5

7.08

421

Dec.

7.4

8.6

8.6

8.0

8.6

8.0

9.3

9.3

9.3

9.3

9.3

8.6

8.6

8.6

8.6

8.6

8.6

*8.0

7.4

7.4

7.4

7.4

b6. 8

b8.0

b9.3

bll

b!2

b9.3 

8.0

5.8

678

261.9

8.45

519

Jan.

8.6

b!2

b!2

b9.3

8.6

7.4

blO

b!6

24

b24

21

12

8.6

14

16

7.4

8.0

8.0

8.0

7.4

7.4

7.4

8.0 *9.3

9.3

9.3

8.6

8.6 

8.6

13

59.

390.8

12.6

755

Feb.

18

b!5

b!2

bll

28

97

46

29

14

10

6.8

876

*8.6

8.0

8.0

7.4

7.4

7.4

8.0

13

34

16

12

12

9.3

7.4

*7.4

8.0

_

-

469.3

16.8

931

Mar.

6.3

8.0

9.3

8.6

8.6

8.0

8.0

8.0

8.0

6.8

7.4

6.8

7.4 *8.0

7.4

6.3

7.4

8.0

8.0

8.6

8.0

6.8

7.4

6.8

8.0

*9.3

8.6

8.6 

8.0

6.8

6.3

240.0

7.74

476

Apr.

6.3

7.4

6.8

4.9

3.8

2.9

2.7

2.3

3.2

2.9

2.9 *2.9

2.5

2.3

2.2

2.0

1.7

1.6

2.0

2.2

2.7

2.9

1.2 *.6

.7

1.2

1.3

.9 

1.4

1.6

-

80.0

2.67

159

May

1.4

1.7

1.9

1.7

1.9

1.7

1.7

1.6

2.2

2.2

1.9

1.4

2.3

*2.5

2.9

2.9

2.9

2.7

3.5

5.5

3.8

2.7

2.2

1.7

1.6

1.4

.8

1.0 

1.0

.8

.7

64.0

2.06

127

June

0.7

1^,

1.1

.5

.5

.5

.4

.6

.5

.4

.4

.5

.4

.3

.3

.2

oi.1.1 *.2

.4

.3

.3

.2

.2

.1

.1

.1 

.1

.2

-

11.0

0.37

22

July

0.2

.1

.1

.1

.2

.4

.1

0-Q

0

0

.1

0

.1

o

*60

*30

*243

*153

207

66

19

4.9

2.7

*2.0

1.6

.8

76 

34

7.4

9.3

918.1

29.6

1,820

Aug.

1.6

*302

178

562

117

51

27

*21

5.3

1.7

.9

.5

.4

.4

.4

*.5

.4

.3

.4

5.3

30

11

3.5

14

13

140

5.3

*4.020 

3,650

177

121

9,460.0

305

18,770

Sept.

*69

86

43

86

*17

12

9.4

7.6

5.1

6.7

3.8

5.9

4.4

3.8

8.5

5.9

3.3

2.9

*3.3

3.8

2.9

2.5

2.5

2.5

2.1

2.5

2.5

2.1 

6.7

23

-

436.7

14.6

866

Calendar year 1950 : Max 840 Mln 0.6 Mean 19.3 Ac -ft 13,980

Water year 1950-51 : Max 4,020 Mln 0 Mean 34.6 Ac-ft 25,030

Peak discharge (base, 5,000 cfs).--Aug. 28 (8 p.m.) 8,700 cfs (8.80 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and records for 

station at Woodruff.

b Stage-discharge relation affected by ice.
LITTLE COLORADO RIVER BASIN 3 

Chevelon Fork below Wildcat Canyon, near Winslow, Ariz.

Location. Lat 34°38', long. 110°43', in sw£ sec. 36, T. 15 N., R. 15 E., on right bank, 

three-eighths of a mile downstream from Wildcat Canyon and 25 miles south of Winslow.

Drainage area.--275 sq mi,

Records available.--May 1947 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 5,905.16 ft above mean sea level, datum of 

1929 (Bureau of Reclamation bench mark).

Extremes.--Maximum discharge during year, 8,100 cfs Aug. 29 (gage height, 13.7 ft), from 

rating curve extended above 800 cfs on basis of slope-area determination of peak flow; 

no flow for extended periods.

1947-51: Maximum discharge, that of Aug. 29, 1951; no flow for extended periods.

Remarks. Records good. The station is just downstream from Wildcat Reservoir site. No 

diversion above station.

Revisions (water years).--W 1213: 1949(P).

Rating table, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

1.45

1.5

1.6 

1.8 

2.1

0 

.3

1.0 

3.2 

8.2

2.4 

2.7 

3.0 

3.5 

4.0

66

145

270

5.0

6.0

8.0

10

640 

1,15O 

2,480 

4,200

Discharge, In cubic feet per second, water year October 1950 to September 1951

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

o

Dec.

(*)

0

0

0

Jan.

(*)

-

0

0

0

Feb.

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

.5

_

-

-

0.5

0.02

1.0

Mar.

3.3

5.9

6.8

6.0

4.9

6.4

7.6

8.0

22

65

126

*109

92

96

121

134

141

104

70

53

56

71

74

74

70

61

58

*71

69

49

38

1,872.9

60.4

3,710

Apr.

32

27

24

24

24

27

69

70

54

*40

30

24

18

12

9.0

6.8

5.6

4.8

A r> *_iS.

4.5

12

44

29

18

*12

9.0

7.2

6.2

7.2

11

-

665.5

22.2

1,320

May

10

9.0

98

386

244

130

79

49

34

24

17

11

7.8

6.2

6.0

6.4

*6.4

31

62

38

24

16

11

7.6

5.7

4.6

3.5

2.6

2,0

1.3

j8

1,333.9

43.0

2,650

June

0.4

.1

0

0

0

o

*o

0

0

o

0

o

o

0

0

o

0

0

0

0

0

0

0

0

0

o

0

0

0

0-

0.5

O.O2

1.0

July

(*)

0

0

0

Aug.

0

0

0

0

O

0

0

0

o

o

0

0

0

o

0

o

0

0

o

0

0

o

0

o

0

o

o

893

*2.810

2,320

329

6,352

205

12,600

Sept.

139

Te

48

33

22

14

10

8.2

6.4

5.4

4.3

3.3

2.6

2.2

1.8

1.3

.9

.7

.6

.4

.2

.1

0

0

0

o

0

o

0

0-

380.4

12.7

755

Calendar year 1950 : Max 568 Mln 0 Mean 23.8 Ac-ft 17,230

Water year 1950-51 : Max 2,810 Mln 0 Mean 29.1 Ac-ft 21,040

Peak discharge (baae. 400 cfs). May 4 (6:30 a.m.) 618 cfs (4.97 ft); Aug. 29 (12 p.m.) 8,10O cfs 

(13.7 ft).

* Discharge measurement or observation of no flow made on thla day.
356 LITTLE COLORADO RIVER B£SDf

Chevelon Fork near Wlnslow, AriT.

Location. Lat 34°56', long, 110°31', in SE^SW^ sec. 27, T. 18 N., P.. 17 E., on right 

bank, 3 miles upstream from mouth and 12 miles southeast of Wlnslow.

Drainage area.--1,010 sq mi, approximately, including some area which is probably noncontributing.

Records available.--December 1905 to December 1908 (January 1907 to December 1908, gage 

neignis ana some discharge measurements only), December 1915 to December 1919, March 

1929 to February 1934, September 1935-to September 1951.

Gage.--Water-stage recorder at present site and datum since July 3, 1929. Altitude of 

 gage is 4,905 ft (from river-profile map). Dec. 18, 1905, to Dec. 12, 1908, waterstage recorder about a mile upstream at different datum. Dec. 18, 1915, to Dec. 5, 

1919, water-stage recorder, and Mar. 30 to July 2, 1929, staff gage 500 ft downstream, 

at different datum.

Average discharge.--25 years (1916-19, 1929-33, 1935-51), 50.2 cfs.

Extremes.--Maximum discharge during year, 7,200 cfs Aug. 30 (gage height, 13.4 ft), from 

rating curve extended above 4,000 cfs by logarithmic plotting; minimum daily 1.0 cfs 

June 22-25.

1916-19, 1929-51: Maximum discharge, 16,100 cfs Apr. 4, 1929 (gage height, 17.8 

ft), from rating curve extended above 4,000 cfs; minimum, about 1 cfs at times in each 

of several years.

Remarks.--Records fair above 10 cfs and poor below prior to Mg. 31 and good thereafter. 

No diversions above station. Chevelon Canal diverts 2 miles downstream from station. 

Canal flow was measured as follows: Nov. 22, 3.07 cfs; Dec. 20, 3.76 cfs; Jan. 15, 

3.91 cfs; Mar. 23, 2.06 cfs; July 16, 2.90 cfs; Aug. 16, 1.54 cfs.

Revisions (water years). W 1049; 1916, 1918 (M).

Dlschargej in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

 

Oct.

e2.6

2.5

3.3

3.5

3.5

e3.5

3.3

3.7

3.8

3.7

4.0

4.0

4.0

4.0

3.7

3.8

4.0

4.0

4.0

4.0

4.0

4.0

4.0

5.8

3.5

3.5

3.8

4.0

4.0

3.8 

3.7

115.0

3.71

228

Nov.

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

4.0

3.8

3.8

3.7

3.3

i^O

3.0

3.5

3.7

3.5

3.3

3.5

3.8

*4.3

4.9

4.9

4.9

4.9

4.9

4.9

4.6

4.6

119.2

3.97

236

Dec.

e3.8

e3.7

3.8

3.8

4.0

.3

.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

123.7

3.99

245

Jan.

e4.0

4.3

4.0

3.8

3.8

3.8

3.8

3.8

3.8

3.8

4.0

4.0

4.0

4.0

*4.0

e3.8

e3.7

3.5

e3.3

3.3

3.3

3.3

3.5

3,5

3,5

3.5

3.3

e3.2

e3.0

3.7 

5,5

115.8

3.74

230

Feb.

4.9

4.3

4.3

4.3

4.3

4.3

4.3

4.6

4.6

4.6

4.6

4.3

5.8

5.2

*4.9

4.9

4.6

4.3 60.

5.8

4.9

e5.2

e4.3

e4.B

4.9

4.9

e4.3

4.6

_

"

132.7

4.74

263

Mar.

e4.6

e4.6

4.6

4.6

3.8

3.7

3.8

4.6

4.0

e4.0

e4.6

4.6

4.6

4.6

*5.0

77

110

*130

112

80

55

41

48

60

63

63

55

*46

40

56

47

1,148.7

37.1

2,280

Apr.

33

24

20

16

15

14

15

13

*41

§1

39

*27

20

15

11

8.7

7.3

5.9

5.5

6.1

5.9

5.5

e5.2

*e4.6

4.8

8.1

9.8

6.8

5.9

8.4

455.5

15.2

903

May

5.7

5.7

5.5

5.2

260

250

154

90

62

43

e28

e!8

14

12

12

*11

9.4

7.8

7.0

5.5

17

23

18

15

12

8.6

e6.1

4.0

e3.7

e2.8 

el. 8

1,117.8

36.1

2,220

June

e2.2

2.8

3.2

3.2

2.8

2.8

*2.8

2.8

3.0

3.3

3.7

4.3

4.3

4.3

4.3

3.8

3.5

e2.8

2.5

e2.3

el. 3

i*£ T^

1.0

1.0

1.3

2.2

2.3

2.3

2.8

80.9

2.70

160

July

2.8

2.8

2.8

2.8

3.2

3.3

3.3

3.2

3.0

e2.8

e2.5

2.8

2.8

2.8

2.8

*3.0

3.2

3.2

19

13

5.5

6.4

4.0

3.3

3.0

3.3

4.0

6.7

6.1

4.9

4.0

136.3

4.40

270

Aug.

4.0

4.0

3.7

3.7

3.2

3.3

3.2

2.6

3.0

3.0

3.2

3.2

3.2

3.2

3.0

*3.0

3.3

3.5

3.5

3.7

3.7

3.7

3.3

3.0

3.3

e3.5

e3.2

27

*852

3,450 

*872

5,291.2

171

10,490

Sept.

*332

165

93

60

*40

31

22

*15

11

8.3

6.5

5.4

5.2

4.9

4.7

4.4

4.4

4.2

4.2

*4.0

4.2

4.0

4.0

4.0

5.7

3.7

3.7

e3.7

3.7

3.7

863.6

28.8

1,710

Calendar year 1950 : Max 478 Mln 2.5 Mean 23.5 Ac-ft 16,990

Water year 1950-51 : Max 3,450 Mln 1.0 Mean 26.6 Ac-ft 19,240

Peak discharge (base. 500 efs). Aug. 30 (8:30 a.m.) 7,200 cfs (13.4 ft). 

* Discharge measurement made on this day.

e Stage-discharge relation affected by wind; discharge computed from estimated non-wlnd-affected 

gage heights.
LITTLE COLORADO RIVER BASIN 357

Clear Creek below Willow Creek, near Wlnslow, Ariz.

Location. Lat 34°40', long. 111°00', in NW^NE^ sec. 30, T. 15 N., R. 13 E., on right

 bank, 2 miles downstream from Willow Creek and 30 miles southwest of Winslow.

Drainage area. 321 sq mi.

Records available.--June 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 6,000 ft (from Forest Service map).

Extremes.--Maximum discharge during year, 8,090 cfs Aug. 29 (gage height, 16.3 ft), from

 rating curve extended above 1,900 cfs by logarithmic plotting; no flow for extended 

periods. . . , 

1947-51: Maximum discharge, that of Aug. 29, 1951; no flow for extended periods.

Remarks.--Records good except those above 2,000 cfs, which are fair. No diversion above 

station. Station is downstream from Willow Reservoir site.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Apr. 11 Apr. 12 to Sept. 30

2.7

2.8

2.9

3.0

0.0 

.2

1.5

3.1 

3.3 

3.5 

3.8

2.8 

7.0

4.2 

4.6

5.0

59

102

158

2.7

2.8

2.9

3.0

3.1

3 3

3 6

4 0

4 5

5 0

8.0

20

47

6.0

8.0

10.0

12.0

351

1,020

2,050

3,500

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

3

9

10

11

12

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

0

0

0

0

0

0

0

0

13

56

*66

56

49

56

68

84

70

47

36

34

44

*68

86

96

95

98

103

92

68

57

1,442

46.5

2,860

Apr.

50

37

43

52

72

83

126

121

130

*142

144

124

85

71

65

58

52

45

38

49

119

133

92

63

*46

36

31

33

33

41

-

2,214

73.8

4,390

May

40

41

95

376

574

388

226

135

92

65

47

34

26

21

21

28

*30

34

43

39

30

20

16

12

8.4

6.1

4.2

2.8

1.6

.8

,Z_

2,457.1

79.3

4,870

June

(*)

-

0

0

0

July

0

0

0

Aug.

0

0

.4

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

5,270

2,650

674

6,594.4

213

13,080

Sept.

285

15?

92

57

38

27

21

*14

16

10

7.2

4.7

2.8

1.7

.9

.4

.2

0

0

0

0

0

0

0

0

0

0

0

0

0

-

729.9

24.3

1,450

Calendar year 1950 : Max 942 Mln 0 Mean 37.2 Ac-ft 26,960

Water year 1950-51 : Max 3,270 Mln 0 Mean 36.8 Ac-ft 26,650

Peak discharge (base. 500 cfs). May 5 (11:30 a.m.) 708 cfs (7.21 ft); Aug. 29 (8 p.m.) 8,090 cfs 

(16.3 ft J.

* Discharge measurement or observation of no flow made on this day.

256684 O - 53 - 24
358 LITTLE COLORADO RIVER BASIN 

Clear Creek near Winslow, Ariz.

Location.--Lat 34°58', long. 110°38, in SE^ sec. 9, T. 18 N., R. 16E., on right bank ij miles 

upstream from mouth and 5 miles southeast of Winslow.

Drainage area.--607 sq mi.

Records available.--June to December 1906, January 1907 to January 1909 (gage heights only), 

jylarcn lyza to February 1934, September 1935 to September 1951.

Gage.--Water-stage recorder at present site and datum since July 10, 1931. Control for 

station is crest of diversion dam 1,200 ft downstream. June 3, 1906, to Jan. 31, 1909, 

water-stage recorder at site 2f miles upstream at different datum. Mar. 25 to July 2, 

1929, staff gage, and July 3, 1929, to July 9, 1931, water-stage recorder at same site, 

at datum 4.03 ft higher.

Average discharge.--20 years (1929-33, 1935-51), 83.1 cfs.

Extremes.--Maximum discharge during year, 8,530 cfs Aug. 30 (gage height, 9.95 ft); no flov 

for long periods.

1929-51: Maximum discharge, 50,000 cfs Apr. 4, 1929 (gage height, 18.1 ft, present 

datum), from rating curve extended above 13,500 cfs on basis of velocity-area studies 

and verified by slope-area determination at gage height 13.4 ft; no flow on many days in 

each year.

Floodmarks 3 ft higher than stage of flood Apr. 4, 1929, were found in 1929 1,850 ft 

downstream from gage.

Remarks.--Records good above 100 cfs and poor below. Water diverted above station for municipal and railroad use. Records show discharge over dam and do not include flow in 

canal that diverts at dam or leakage through dam. Leakage below dam was measured June 

7, 2.24 cfs.

Revisions (water years). W 859: 1929.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Au Aug. 31 to Sept. 30

4.7 0.0

4.8 .2

4.9 4.9

5.0 23

6.O 685

7.0 1,900

8.0 3,600

9.0 5,820

4.4 O.O

4.5 .3

4.6 1.6

4.7 5.0

4.8 13

5.0 

5.2 

5.5 

6.0 

7.0

44

107

262

685

1,900

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.1

.1

.1

0

0

0

.1

.2

.1

.1

.1

.1

.1

.2

.2

.1

.1

.1

.1

.1

.2

.3

*.2 *.2

.3

.2

.2

.2

.3

.2

4.5

0.15

8.9

NOV.

0.2

.4

.2

.6

.4

 a. 5

.6

.6

.6

.6

.6

.6

.6

.6

.6

15.2

0.51

30

Dec.

, aO.5

*.3

14.2

1.46

28

Jan.

0.4

.4

.4

.4

.4

.3

.3

.4

.4

.3

.3

.4

.3

.3

.3

.3

.3

.4

.4

.4

.4

.6

.8

.6

.8

.8

.6

.6

.8

~78 1.0

14.9

0.48

30

Feb.

0.6

.4

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

_

_

-

16.6

0.59

33

Mar.

0.6

.6

.6

.6

.6

.6

.6

.6

.4

.4

.4

.6

.6

.4

a.l

0

0

0

0

0

0

*0

0

0

0

34

*59

62

69

66

298.3

9.62

592

Apr.

50

36

27

27

19

21

42

62

*96

92

101

111

~96 116

69

53

44

42

36

34

27

23

80

96

*69

47

36

25

21

11

1,615

53.8

3,200

May

15

17

21

21

147

541

423

280

181

125

87

59

42

32

25

21

*17

11

7.9

9.5

13

21

23

17

11

7.9

3.8

2.0

.8

.4

_.£

2,182.5

70.4

4,330

June

0.1

.1

.1

.1

.1

0

*o

o

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0.5

0.02

1.0

July

(*)

0

0

0

Aug.

0

5

.4

.4

.4

.1

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

.2

»5,690

1,570

5,261.5

170

10,440

Sept.

269" 542

160

103

66

47

35

31

22

19

15

10

8.1

4.6

3.4

3.7

2.6

1.6

1.3

1.3

1.0

176- .8

1.6

1.1

1.8

1.0

.8

15

3.7

1,374.0

45.8

2,730

Calendar year 1950: Max 871 Mln 0 Mean 33.1 Ac-ft 23,950

Water year 1950-51: Max 3,690 Mln o Mean 29.6 Ac-ft 21,420

ft-j- Peak discharge (base, 500 efs).--Hay 6 (1 p.m.) 647 cfs (5.96 ft); Aug. 30 (9 a.m.) 8,530 cfs (9.95 

* Discharge measurement or field observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of recorded range In sta,ge, weather records, 

and adjoining good record.
LITTLE COLORADO RIVER BASIN 359 

Little Colorado River at Grand Falls, Ariz.

Location. Lat 35°26', long. 111°12', in T. 24 N., R. 11 E., unsurveyed, on left bank 

1,000 ft downstream from Grand Palls on Navajo Indian Reservation, 4§ miles upstream 

from Dinnebito Wash, 30 miles northeast of Flagstaff, and 96 miles upstream from mouth.

Drainage area.--21,200 sq mi, approximately.

Records available. October 1925 to September 1951 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 4,440 ft (from river-profile map).

Average discharge.--26 years, 277 cfs.

Extremes.--Maximum discharge during year, 10,200 cfs Aug. 30 (gage height, 15.2 ft); no 

now for many days.

1925-51: Maximum discharge, 50,500 cfs Apr. 5, 1929 (gage height, 30.0 ft); no flow 

during some periods in each year.

A discharge of about 120,000 cfs occurred Sept. 19, 1923 (gage height, 47.0 ft, from 

floodmarks).

Remarks.--Records good above 100 cfs and poor below. Diversions for irrigation of about 

ay,1)00 acres above station. Flow regulated by many small reservoirs above station, 

combined capacity, about 71,000 acre-ft, not including Lone Pine Reservoir and Lake 

Mary.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, in cubic feet per second)

4.7 

4.9 

5.1 

5.3 

5.5

0

1.0

3.9

9.2

18

30

6.0 

6.3 

6.5 

7.0 

7.5

151

206

400

655

8.0

9.0

11.0

13.0

16.0

950

1,690

3,670

6,360

11,800

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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

0

0

0

0

0

0

0

3.1

12

11

10

8.6

5.7

4.8

4.6

4.4

3.4

2.9

2.2

1.7

1.5

1.4

.9

.7

.5

_

_

-

79.4

2.84

157

Mar.

0.3 

.2

.1

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.8

*24

22

16

9.2

5.3

4.5

4.0

4.0

10

25

127 .4

4.11

253

Apr.

40 

45

*47

33

24

19

16

13

10

11

19

35

50

60

61

60

46

*29

22

18

19

37

36

21

17

35

41

31

20

10

-

925

30.8

1,830

May

5 

2

1

.5

.2

.1

0

380

245

164

104

70

50

30

20

12

8

4

2

1

.5

*0

0

0

0

0

0

0

0

0

0

1,099.3

35.5

2,180

June

0

0

0

July

0 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

2.2

17

4.4

2.4

19

3.0

487

348

84

967.0

31.2

1,920

Aug.

68 

50

111

317

380

399

174

118

70

40

30

22

15

12

10

9

8

8

7

6

6

5

**4

4

4

3

3

10

212

6,350

6.970

15,425

498

30, 600

Sept.

2.180 

928

522

330

206

142

106

76

48

30

15

8

4

2

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

67

-

4,665

156

9,250

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 6,970 Mln o Mean 63.8 Ac-ft 46,190

Peak discharge (base. 4.000 cfs). Aug. 30 (11 a.m.) 10,200 cfs (15.2 ft).

* Discharge measurements or observation of no flow made on this day.

** Field estimate made on this day.

Note. No gage-height record Mar. 27 to Apr. 2, Apr. 29 to May 6, May 13-21, Aug. 2, 9-28, Sept. 

10-15; discharge estimated on basis of weather records and records for station near Cameron and 

Moenkopi Wash near Tuba.
360 LITTLE COLORADO RIVER BASIN 

Moenkopi Wash near Tuba, Ariz.

Location. Lat 36°02 I , long. 111°24 I , In T. 31 N., R. 9 E., unsurveyed, on Navajo Indian 

Reservation at downstream side of left pier of bridge on U. S. Highway 89, 9 miles 

upstream from mouth, 11 miles north of Cameron, and 11 miles southwest of Tuba.

Drainage area.--2,490 sq mi, approximately. 

Records available.--July 1926 to September 1951.

Gage.--Water-stage recorder at present site since June 23, 1941. Datum of gage is 4,310.96 

 Ft above mean sea level (Arizona Highway Department bench mark). Prior to Aug. 18,

1929, staff gages, and Aug. 18, 1929, to June 22, 1941, water-stage recorder, at site

8 miles upstream at different datums.

Average discharge. 25 years, 19.8 cfs.

Extremes.--Maximum discharge during year, 5,000 cfs Sept. 30 (gage height, 8.5 ft), from 

rating curve extended above 1,200 cfs on basis of slope-area determination of peak 

flow; no flow for many days.

1926-51: Maximum discharge, 15,100 cfs Aug. 4, 1929, from rating curve extended 

above 200 cfs on basis of slope-area determination of peak flow; no flow for many days 

in each year.

Revision.--The figure of maximum discharge for the water year 1943 has been revised 

to 7,150 cfs Aug. I? (gage height, 8.10 ft), superseding figure published in WaterSupply Paper 979.

Remarks.--Records fair. Diversions above station for irrigation of about 2,500 acres; 

none below.

Revisions (water years ).--W 1935-39.

Rating table, water year 1950-51, except period of Ice effect 

(gage height, in feet, and discharge, in cubic feet per second) 

[Shifting-control method used Apr. 13 to May 24, July 15-25)

0.50 

.70

4.7

1.1 

1.4 

1.7 

2.0

62

114

2.5

5.0 

4.0 

6.0

260

460

1,000

2,500

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

*.4

.7

1.0

1.4

1.3

1.0

1.0

1.3

1.5

1.7

1.8

1.8

1.8

1.8

1.7

*1.7

1.7

1.8

1.9

1.9

2.0

2.2

2.2

2.0

2.3

F^

2.2

2.2

2.3

2.3

51.6

1.66

102

Nov.

*2.3

2.6

2.6

2.6

2.7

2.7

2.7

2.7

2.7

2.3

1.9

1.5

*2T2

3.7 3T3-

2.9

2.6

2.6

2.6

2.7

2.7

2.6

2.4

2.4

2.4

2.4

2.2

2.0

1.9

2.2

-

75.1

2.50

149

Dec.

*2.6

2.6

1.7

2.0

2.9

1.9

2.2

2.9

2.9

2.9

2.6

3.1

3.3

3.3

*3.7

3.5

3.3

2.4

3.1

3.1

1.9

1.2

1.1

ITS

1.4

2.2

2.9

3.5

3.9

4.1

*4.1

84.1

2.71

167

Jan.

4.1

2.0

2.9

4.1

4.1

3.9

2.7

2.7

2.7

2.0

. *3

5

120.2

3 ,88

238

Feb.

*2.7

1.7

.7

.8

*1.9

3.1

3.3

1.8

1.0

.2

.3

3.5

T^

.2

0

0

0

.5

*2.3

*.l

0

0

0

0

0

1.5

1.0

1.4

_

-

29.5

1.05

59

Mar.

*3.3

2.6

2.9

2.7

1.5

.2

O

0

0

0

0

0

0

o

*0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

13.2

0.43

26

Apr.

0

*0

*0

0

0

11

15

7.3

3.9

2.6

1.5

1.2

1.0

.6

.5

.4

.1

0

*4.2

11

3.1

1.9

2.0

1.9

1.5

1.0

.4

0

0

.3

-

72.4

2.41

144

May

*2.6

3.1

3TT

1.4

*.4

.6

0

*0

0

0

0

0

0

0

*0

.3

2.6

2.7

1.8

.5

.1

.9

*.4

0

0

0

0

0

0

*0

*0

20.5

0.66

41

June

(»)

(*)

-

0

0

0

July

0

*0

0

0

0

0

0

0

0

0

0

0

0

*0

.3

.1

0

.4

O

0

.5

0

*8.0

1.7

0

*0

0

131

27

11

6.2

186.2

6.01

369

Aug.

*37

12

*68

*106

39

9.5

2.7

1.5

.4

0

0

0

0

0

0

0

0

*0

0

*0

0

0

0

5.0

2.2

1.4

1.0

.6

*65

*56

31

438.3

14.1

869

Sept.

10

5.0

*1.8

1.1

.4

*1.1

1.5

1.0

a. 5

a.l

0

0

0

0

0

0

0

0

*0

0

0

0

0

o

o

*0

0

0

3.1

*1.890

-

1,915,6

63.9

3, SCO

Calendar year 1950: Max 262 Mln o Mean 5.08 Ac-ft 3,670

Water year 1950-51: Max 1,890 Mln 0 Mean 8.24 Ac-ft 5,960

Peak discharge (base. 1,400 cfs).--Sept. 30 (4 a.m.) 5,000 cfs (8.5 ft). 

* Discharge measurement or obaervation of no flow made on this day. 

a No gage-height record; discharge estimated on basis of adjoining good record and records for 

Little Colorado River near Cameron.

Note. Stage-discharge relation affected by ice Dec. 21-28, Jan. 1-6, Jan. 8 to Feb. 2.
LITTLE COLORADO RIVER BASIN 

Little Colorado River near Cameron, Ariz.

361

Location.--Lat 35°56', long. 111°34', on left bank, in Navajo Indian Reservation, 3 miles 

downstream from Coconino dam site, 9| miles downstream from Moenkopi Wash, 9j miles 

northwest of Cameron, and 45.5 miles upstream from mouth.

Drainage area.--26,500 sq mi, approximately.

Records available.--June 1947 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 3,900 ft (from river-profile map).

Extremes. Maximum discharge during year, 11,700 cfs Aug. 30 (gage height, 14.0 ft); no 

now for many days.

1947-51: Maximum discharge, 21,900 cfs Aug. 9, 1947 (gage height, 19.60 ft); no 

flow during some periods in each year.

Remarks.--Records good except those below 50 cfs and those for period of no gage-height 

record, which are fair. Diversions above station for irrigation of about 32,000 acres, 

and for municipal and railroad uses. Some regulation by reservoirs above station (combined capacity, about 71,000 acre-ft, not Including Lone Pine Reservoir and Lake Mary).

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Aug. 6-28)

2.1 

2.3

2.5 

2.7 

2.9

.2

2.5 

8.2

3.2 

3.5

4.0 

4.5 

5.0

124

270

485

780

6.0 1,540

7.0 2,400

9.0 4,460

11.0 7,070

Discharge, In cubic feet per second,' water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.3

.8

.8

.7

.8

.8

.8

.8

.!§.

.9

.8

.9

.9

.7

-

10.9

0.36

22

Dec.

*0.7

1.4

2.2

2.0

1.3

1.8

2.0

1.6

2.0

2J3

2.4

2.4

2.2

2.5

2.5

2.5

2.5

2.4

2.0

1.8

1.9

1.2

.7

.4

.3

0

0

0

0

0

*2.1

47.6

1.54

94

Jan.

3.2

2.6

1.7

1.6

2.8

1.6

.8

.5

0

TS

0

0

1.6

.8

.7

.8

1.8

2.5

5.0

5.0

4.5

4.2

3.0

4.5

4.5

4.5

3.0

2.5

3.0

4.8

5.5

76.8

2.48

152

Feb.

*0.9

.7

.2

.5

.2

.1

.9

1.9

174

.2

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

_

-

-

7.1

O.E5

14

Mar.

(*)

0

0

0

Apr.

0

*0

0

0

0

2.1

8.6

14

12

5.0

.8

.1

0

.7

4.8

6.9

9.9

12

*11

72.

17

6.9

2.0

6.6

9.5

5.0

2.0

2.6

10

7.E

-

228.7

7.62

454

May

*4.0

1.3

.4

.2

.1

.1

0

0

71

215

138

80

62

35

24

a!5

a8

a4

a2

al

a. 5

a.l *0

0

0

0

0

0

0

0

*0

661.7

21.3

1,310

June

0

0

0

July

0

0

*0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

35

22

10

4.2

5.0

3.5

3.0

.8

.6

98

905

699

E16

2,002.1

64.6

3,970

Aug.

*54

413

375

*460

426

353

307

127

*69

39

35

26

18

16

14

12

11

9.9

8.6

8.2

7.9

7.2

6.6

6.3

5.6

5.3

5.3

5.0 18T~

*3,590

*6640

33,243.9

427

26,270

Sept.

4.070

1,380

*673

376

248

171

127

84

56

33

18

8.2

3.2

.5

0.

0

0

0

*0

0

0

0

0

0

0

0

0

0

14

1,770

-

9,031.9

301

17,910

Calendar year 1950: Max 1,210 Mln 0 Mean 55.8 Ac -ft 40,400

Water iter year year 1950-51: 1350-51: Max Max 6,640 6,640 Mln Mln 0 u Mean Mean 69.3 69.3 Ac-ft Ac-ft 50,200 bo.zoo

Peak discharge (base. 4.000 cfs). July 29 (5:30 a.m.) 4,100 cfs (8.7 ft): Aug. 30 (6:30 p.m.) 

.1,700 cfs (14.0 ft); Sept. 30 (12 m.) 4,460 cfs (8.96 ft). 

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of comparable recession periods.
362 COLORADO RIVER MAIN STEM 

Colorado River near Grand Canyon, Ariz.

Location. Lat 36°05'55", long. 112°05'30", on left bank at Kaibab Bridge, a quarter of a 

mile upstream from Bright Angel Creek, 11 miles by trail northeast of Grand Canyon, 

Coconino County, 26 miles downstream from Little Colorado River, and 267 miles upstrearr 

from Hoover Dam.

Drainage area.--137 ,800 sq mi, approximately.

Records available. October 1922 to September 1951. Gage-height records collected l| 

miles downstream, 1908-13, published in reports of United States Weather Bureau.

Gage.--Two water-stage recorders, one on left bank for ordinary flows since Oct. 1, 1934, 

and one on right bank 400 ft downstream since Dec. 9, 1922, used for high water only 

since 1934. Datum of gages is 2,418.7 feet above mean sea level, preliminary datum of 

1929.

Average discharge. 29 years, 17,610 cfs.

Extremes.--Maximum discharge during year, 63,700 cfs June 1 (gage height, 21.00 ft); minimum, 3,370 cfs Feb. 7 (gage height, 1.80 ft).

1922-51: Maximum discharge, 127,000 cfs July 2, 1927 (gage height, 29.25 ft); minimum, 700 cfs Dec. 28, 1924 (gage height, -0.70 ft).

Maximum discharge known, 300,000 cfs about July 8, 1884 (computed on basis of flood 

studies at Lees Ferry). Crest discharge of flood of June 19, 1921, 220,000 cfs (gage 

height, 37.5 ft, from floodmarks), from rating curve extended above 120,000 cfs by logarithmic plotting.

Remarks.--Records excellent. Discharge measurements generally made once a week. Natural 

now of stream affected by transmountain diversions, storage reservoirs, power developments, ground-water withdrawals and diversions for irrigation, and return flow from irrigated areas. Records of chemical analyses, water temperatures, and sediment loads 

for the water year 1951 are given in Water-Supply Paper 1200.

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Apr. 12 to May 21, May 25 to June 2, 

June 11-24, July 11-31)

Oct. 1 to May 25, July 14-31

3,400 7.0

3,630 10.0

4,830 13.0

7,550 16.0

10,800

17,000

25,800

37,400

May 26 to July 13

11.0 21,300 16.0 38,800 2.0

12.0 24,300 18.0 48,000 3.0

14.0 31,000 21.0 64,300 5.0

Aug. 1 to Sept. 30

3,600 7.0

4,830 10.0

7,570 13.0

10.90C 

17,40C 

26,OOC

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

AC- ft

Oct.

7,660 

7,380

7,280

7,100

6,890

6,590

6,260

6,040

6,200

6,240

6,160

6,040

5,970

5,870

5,730

5,650

5,510

5,280

5,260

5,390

5,270

5,100

5,100

5,230

5,-500

5,180

5,210

5,100

5,020

5,010

5,050

181,070

5,841

359,100

Nov.

5,050 

4,870

4,750 

4,830

5,100

5,160

5,120

5,190

5,220

5,280

5,380

5,530

5,730

5,650

5,640

5,740

5,910

6,120

6,210

6,210

6,190

6,450

6,700

6,680

6,690

7,050

7,420

7,540

7,680 

7,970

-

179,060

5,969

355,200

Dec.

7,910 

7,660

7,660 

7,580

7,320

7,300

7,360

7,320

7,170

7,100

6,910

6,860

6,760

6,580

6,610

6,910

7,010

6,890

6,730

6,680

6,940

7,360

7,680

7,700

7,310

7,050

6,940

6,830

6,560 

6,260

6,050

218,980

7,064

434,300

Jan.

5,940 

5,830

5,730 

5,730

5,820

5,650

5,470

5,470

5,470

5,220

4,910

4,810

4,580

4,150

3,870

3,850

4,390

4,780

4,950

4,970

4,780

4,790

5,050

5,490

5,820

5,970

5,900

5,950

6,160 

6,470

6,580

164,550

5,308

326,400

Feb.

6,720 

6,930

6,750 

6,060

4,970

3,930

3,420

3,596

4,170

5,270

6,370

7,280

7,490

7,030

7,100

7,480

7,600

7,580

7,540

7,420

7,280

7,210

7,360

7,760

 7,840

7,730

7,400

7,380

;

-

184,660

6,595

366,300

Mar.

7,600 

7,600

7,540 

7,610

7,580

7,300

7,150

7,280

7,100

6,930

6,820

6,580

6,340

6,650

6,840

6,970

7,140

7,440

7,540

7,190

6,870

6,910

6,940

6,910

6,900

6,550

6,240

6,140

6,340 

6,480

6,730

216,210

6,975

428,800

Apr.

6,900 

7,070

7,880 

8,810

8,870

8,500

8,550

8,690

8,280

7,850

7,660

7,73O

8,080

8,120

8,490

8,950

9,230

9,260

9,080

8,810

8,610

8,230

8,000

8,030

8,450

9,810

11,000

12,100

13,800 

15,100

-

269,940

8,998

535,400

May

15,000 

15,100

15,800 

15,800

16,200

15,900

15,000

14,500

14,300

14,000

14,600

16,500

18,900

20,900

23,800

26,500

26,300

26,000

25,800

25,100

24,500

25,600

28,400

32,80O

35,700

36,800

38,000

38,800

41,400 

48,000

56,300

782,300

25,240

1,552,000

June

61,900 

61,900

60,200 

59,600

57,400

53,000

49,900

46,000

43,200

40,600

39,300

38,800

38,400

38,000

36,400

34,800

55,600

34,000

54,800

59,500

46,000

49,900

55,000

56,500

58,500

56,500

52,000

48,400

46,000 

44,200

-

1,411,700

47,060

2,800,000

July

42,500 

39 , 700

57,200 

55, 200

52,800

50,600

29,700

28,800

27,700

25,800

24,500

25,400

22,500

21,200

20,500

19,200

18,400

17,600

16,800

16,100

15,900

16,200

16,800

16,100

15,700

15,200

15,700

16,800

15,700 

15,400

15,300

704,200

22,720

1,397,000

Aug.

15,000 

14,200

14,700 

18,200

21,300

23,800

24,000

22,300

18,800

17,500

15,900

14,900

14, 200

13,700

15,100

12,200

11,400

10,600

9,740

9,150

8,660

8,290

8,020

7,720

7,520

7,560

7,660

7,510

9,950 

13,200

19,400

419,780

15,540

832,600

Sept.

18,500 

17,10f

14,100 

12,600

11,500

11,500

10,000

8,900

8,130

7,510

7,080

6,750

6,600

6,480

6,170

,820

,570

,280

,130

,930

,820

,820

,790

,750

,740

,710

,740

,750

4,700 

5,74C

-

227,770

7,592

451 , 800

Calendar year 1950: Max 56,100 Min 3,850 Mean 14,970 Ac-ft 10,840,000

Water year 1950-51 : Max 61,900 Min 3,420 Mean 13,590 Ac-ft 9,839,000

Peak discharge (base, 55,000 cfs). June 1 (7 to 10 p.m.; 

9 p.m.) 59,000 cfs (20.05 ft).

65,700 cfs (21.00 ft); June 25 (4 to
BRIGHT ANGEL CREEK BASIN 363

Bright Angel Creek near Grand Canyon, Ariz.

Location. Lat 36°05'55", long. 112°05'40", on right bank 1,000 ft upstream from mouth

ana 11 miles by trail from Grand Canyon, Coconino County. 

Drainage area. 100 sq mi.

Keeoras available.--October 1923 to September 1951. 

uage.--water-stage recorder at present site and datum since Apr. 22, 1943. Datum of gage

 Ts 2,452.1 ft above mean sea level, preliminary datum of 1929. Oct. 20, 1923, to Jan. 

29, 1933, and Aug. 25, 1936, to Apr. 21, 1943, staff gages at several sites within 

3,200 ft of mouth at various datums. Jan. 30, 1933, to Aug. 19, 1936, water-stage recorder 200 ft upstream from present site at datum 4.5 ft higher.

Average discharge.--28 years, 38.0 cfs.

Extremes. Maximum discharge during year, 193 cfs Aug. 29 (gage height, 3.30 ft); minimum

 daily, 16 cfs Aug. 17, Sept. 17.

1923-51: Maximum discharge, 4,400 cfs Aug. 19, 1936, from rating curve extended

above 250 cfs on basis of slope-area determination of peak flow; minimum daily, 15 cfs

for several days during summers of 1934 and 1949. 

Remarks.--Records good. Minor diversion for irrigation of a few acres above station. Discnarge measurements generally made once a week. Some fluctuation in flow caused by

power plant 9 miles above station; no regulation by storage. 

Revisions.--Revised figures of discharge, in cubic feet per second, for period in the

water year 1941, superseding figures published in Water-Supply Paper 929, are given

herewith:

Day

Sept. 13 

14 

15 

16 

17

Discharge

42 

38 

38 

36 

36

Day

Sept. 18 

19 

ZO 

21 

22

Month

September 

Water ye 

Calendar

ar 1940-41.. . 

year 1941.. .

Discharge

36 

36 

36 

36 

36

Cfs -days

1,091 

32,607 

33,155

Day

Sept. 23 

24 

25 

26 

27

Maximum

42 

784 

784

Discharge

36 

37 

35 

35 

35

Minimum

35 

23 

27

Day

Sept. 28 

29 

30

Mean

36.4 

89.3 

90.8

Discharge

35 

35 

35

Runoff In 

acre-feet

2,160 

64,680 

65,760

Rating tables, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second)

Oct. 1 to Nov. 8 Nov. 9 to Sept. 30

1.8

1.85

1.9

1.95

2.0

2.25

2.3

Z.5

2.7

2.9 99

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

19

19

19

18

19

19

19

18

19

19

18

19

19

19

2fl

19

19

19

19

19

19

19

19

19

19

20

20

19

19

19

20

590

19.0

1,170

Nov.

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

20

a20

a20

a20

a20

a20

a20

20

20

20

20

20

20

20

-

600

ZO.O

1,190

Dec.

20

20

20

20

11

21

21

ZO

20

20

20

20

20

20

20

ZO

20

20

20

20

20

20

20

20

ZO

20

20

20

20

19

20

622

20.1

1,230

Jan.

22

22

22

21

21

21

21

20

25

20

20

20

20

20

20

20

20

ZO

20

20

20

20

20

20

20

20

20

20

22

23

2T

636

20.5

1,260

Feb.

20 50

20

20

20

20

ZO

19

T5

19

19

20

20

20

20

20

20

20

20

20

20

ZO

20

20

20

20

20

20

-

_

-

556

19.9

1,100

Mar.

20

20

20

20

ZO

20

20

20

20

20

20

19

15

19

19

19

20

20

20

20

19

20

20

20

20

20

20

20

20

20

13

617

19.9

1,220

Apr.

22

Zl

21

21

21

22

21

20

2T

21

22

23

23

Z3

24

24

25

25

25

26

27

27

26

28

28

28

26

26

28

29

724

24.1

1,440

May

Z8

28

27

27

33

38

4"3" 43

39

37

34

32

34

38

36

30

28

27

26

26

27

27

27

26

24

23

23

23

23

23

23

923

29.8

1,830

June

24

24

24

23

23

23

22

22

22

21

21

20

2T

21

21

20

20

20

20

20

20

20

20

20

20

ZO

20

20

20

20

632

21.1

1,250

July

20

25

20

20

20

20

20

19

20

19

20

20

19

19

19

20

19

20

20

19

20

20

19

19

19

19

19

20

18 rs

18

602

19.4

1,190

Aug.

20

19

23

22

18

18

18

18

18

18

18

18

18

17

17

17

18~

18

18

18

18

17

17

17

17

18

21

73

a22

20

625

Z0.2

1,240

Sept.

20

19

18

18

18

18

18

18

18

18

18

18

18

17

17

17

16

17

18

18

18

18

18

18

17

18

18

20

21

25

543

18.1

1,080

Calendar year 1950: Max 142 Mln 17 Mean 29.7 Ac-ft 21,500

Water year 1950-51: Max 73 Mln 16 Mean 21.0 Ac-ft 15,200

Peak discharge (base, 125 cfs). Aug. 29 (3 p.m.) 193 cfs (3.30 ft).

a No gage-height record; discharge Interpolated or estimated on basis of trend of adjoining record.
364 VIRGIN RIVER BASIN

North Fork Virgin River near Springdale, Utah

Location.--Lat 37°12'35", long. 112°58'40", in SWijWW-f sec. 22, T. 41 S., R. 10 W., on

right bank in Zion National Park, 0.2 mile downstream from point of diversion of Springdale Canal, 0.5 mile downstream from Pine Creek, and 1.9 miles northeast of Springdale.

Drainage area. 336 sq mi.

Records available. May 1913 to June 1914, June to November 1923, April 1925 to September 

1951.Published as Zion Creek 1913-14 (flow of Springdale Canal not included) and as 

Mukuntuweap River 1923, 1925-32.

Gage. Water-stage recorder. Altitude of gage is about 3,500 ft. Prior to Dec. 15, 1949, 

staff gages at several sites within 1 mile of present site at various daturas.

Average discharge.--26 years (1925-51), 104 cfs.

Extremes. Maximum discharge during year, 833 cfs Aug. 29 (gage height, 4.42 ft); minimum

 3aTTy, 35 cfs Aug. 16, 17, 25-27.

1925-51: Maximum discharge, 7,000 cfs Mar. 3, 1938 (gage height, 12.29 ft, present 

datum, from floodmark), on basis of slope-area determination of peak flow; minimum observed, 24 cfs Dec. 17, 31, 1928.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Figures given herein include Springdale Canal which diverts water in NW-s-NWj- sec. 22, T. 

41 S., R. 10 W., for irrigation in vicinity of Springdale. Flow affected by diversions 

above station for irrigation.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

40

»4T

42

42

41

41

40

40

41

41

41

42

43

43

43

43

44

43

44

44

44

44

44

45

45

45

45

45

45

45

4_6

1,332

43.0

2,640

Nov.

48

48

48

48

48

46

 47

48

48

42_

43

43

47

64

49

47

49

51

74

67

59

57

53

51

50

50

51

52

52

52

-

1,532

51.1

3,040

Dee.

52

49

50

53

50

»47

53

52

51

51

51

51

51

51

51

50

49

49

52

50

49

49

48

49

49

48

47

47

49

49

54

1,551

50.0

3,080

Jan.

43

41

46

52

51

46

40

4T

»42

42

47

52

49

46

48

51

52

53

55

52

47

50

54

54

54

54

55

55

71

57

44

1,544

49.8

3,060

Feb.

42

44

53

59

55

55

55

55

»56

57

53

56

53

47

52

51

54

56

49

47

54

58

55

44

49

55

54

52

_

_

-

1,475

52.7

2,930

Mar.

49

55

54

54

56

56

59

62

»63

61

56

54

62

64

66

66

57

53

57

63

64

65

64

63

65

68

67

62

62

65

68

1,880

60.6

3,730

Apr.

65

65

66

68

71

69

69

74

76

85

»66

66

68

72

72

76

76

72

90

89

78

70

68

66

64

75

75

94

~9T 243

-

2,385

79.5

4,730

May

78

7O

»94

131

151

133

120

104

96

93

84

81

74

76

168

94

103

96

84

78

76

83

79

76

68

63

60

59

58

57

5J5

2,743

88.5

5,440

June

56

58

57

54

52

51

52

51

51

49

»49

48

47

47

48

46

43

42

42

42

42

42

42

42

42

41

39

38

38

39

-

1,390

46.3

2,760

July

39

38

38

38

37

37

37

37

37

»3£

36

36

36

36

36

37

38

44

42

38

41

42

45

W

38

37

38

40

39

37

37

1,187

38.3

2,350

Aug.

82

91

»124

77

48

44

42

41

40

40

38

37

36

37

36

35

35

42

38

38

39

38

39

36

35

35

35

»38

393

aTT2

a52

1,853

59.8

3,680

Sept.

a46 a"43

a41

a41

41

»42

42

41

41

40

39

39

39

39

39

38

38

38

3£

38

37

37

37

37

37

363~6

58

56

43

1,217

40.6

2,410

Calendar year 1950: Max 354 Mln 36 Mean 78.1 Ae-ft 56,510

Water year 1950-51: Max 393 Mln 35 Mean 55.0 Ac-ft 39,850

Peak discharge (base, 800 efs).--Aug. 29 (4:25 p.m.) 833 efs.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for other Virgin River stations.
VIRGIN RIVER BASIN 365

Virgin River at Virgin, Utah

Location.--Lat 37°12', long. 113° 12', inNEl~sec. 28, T. 41 S., R. 12 W., on right bank 

I? miles southwest of Virgin and about 2 miles downstream from North Creek.

Drainage area.--934 sq mi.

Records available.--April 1909 to September 1951 (fragmentary prior to October 1926).

Gage.--Water-stage recorder. Altitude of gage is about 3,500 ft. Prior to Dec. 19, 1949, 

staff or chain gages at several sites within 3 miles of present site at various datums.

Average discharge . 34 years (1909-14, 1915-16, 1917-18, 1923-24, 1925-51) 206 cf s.

Extremes.--Maximum discharge during year, 2,010 cfs Aug. 29 (gage height, 4.95 ft); minimum, 41 cfs July 10.

1909-51: Maximum discharge observed, 13.500 cfs Mar. 3, 1938 (gage height, 10.7 ft, 

from floodmarks, site and datum then in use), from rating curve extended above 530 cfs 

on basis of slope-area determinations at gage heights 8.04 and 10.7 ft; minimum observed, 23 cfs Sept. 30, 1931.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Diversions above station for irrigation. Records of chemical analyses and water 

temperatures for the water year 1951 are given in Water-Supply Paper 1200.

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

155

322

2.0 521

2.5 732

3.0 959

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

71

*76

74

76

73

70

67

67

70

70

68

71

70

74

78

78

73

73

73

73

74

76

76

80

80

80

83

86

83

86

86

2,340

75.5

4,640

Nov.

88

90

90

96

96

96

*96

94

94

90

90

92

98

132

130

112

115

115

158

158

135

130

126

126

123

119

119

123

130

130

-

3,391

113

6,730

Dec.

128

128

121

123

119

*110

112

115

119

115

115

117

115

117

119

117

112

108

115

117

117

115

115

115

117

110

100

100

100

102

117

3,550

115

7,040

Jan.

110

96

110

119

119

110

102

104

106

*108

117

130

119

110

117

123

123

121

123

121

115

119

123

126

126

126

130

130

152

142

117

3,694

119

7,330

Feb.

98

106

128

140

132

130

130

130

*130

132

132

128

121

119

117

121

119

119

117

110

117

121

128

115

119

121

130

126

-

_

-

3,436

123

6,820

Mar.

119

128

130

128

135

132

132

140

*140

135

128

123

126

128

132

130

123

112

112

117

117

117

115

115

119

121

121

115

106

110

132

3,838

124

7,610

Apr.

132

123

117

126

128

132

126

128

128

138

*121

110

102

106

102

102

104

104

171

176

138

117

108

108

102

126

138

115

500

160

-

4,088

136

8,110

May

140

155

*172

189

240

195

163

135

128

126

110

104

94

94

*412

150

152

142

130

121

119

135

152

132

119

104

88

85

80

76

78

4,320

139

8,570

June

76

80

80

80

74

71

70

76

74

71

*70

67

61

61

67

63

56

53

52

52

52

53

53

55

57

56

57

58

*57

58

-

1,910

63.7

3,790

July

53

52

50

53

52

55

53-

49

47

46.

46

49

51

50

47

47

52

21

63

55

53

67

68

61

56

56

56

70

58

51

56

1,696

54.7

3,360

Aug.

110

200

*246

176

100

75

60

58

58

58

56

55

54

56

54

52

52

60

55

55

55

90

55

50

46

49

49

52

802

318

100

3,356

108

6,660

Sept.

80

72

70

70

72

*74

70

67

61

65

60

56

58

64

57

53

56

57

55

60

58

61

57

60

61

60

57

171

123

85

-

2,070

69.0

4,110

Calendar year 1950: Max 726 Min 51 Mean 133 Ac-ft 96,270

Water year 1950-51: Max 802 Min 46 Mean 103 Ac-ft 74,770

Peak discharse (base, 900 cfs). --May 15 (4:45 a.m.) 1.080 cfs (2.86 ft): AUK. 22 (2:45 p.m.) 1.020

cfs (3.12 ft); Aug. 29 (3:15 p.m.) 2,010 cfs (4.95 ft).

* Discharge measurement made on this day.

Note.- -Mo gage-height record Apr. 30 to May 2, May 16, Aug. 5-24, Aug. 31 to Sept. 5; discharge

estimated on basis of appearance of chart and records for other Virgin River stations.
366 VIRGIN RIVER BASIN

Santa Clara River near Central, Utah

Location.--Lat 37°24', long. 113°37', in SE£ sec. 11, T. 39 S., R. 16 W., on right bank 

izu rt upstream from road bridge, 1 mile southeast of Central, and li miles upstream 

from Kane Spring Draw. Prior to July 9, 1951, at site 40 ft upstream at same datum.

Drainage area.--97 sq mi, approximately.

Records available.--April 1909 to September 1930, November 1938 to September 1951.

Gage.--Water-stage recorder and rock-masonry control. Altitude of gage is about 5,170 ft.

 Prior to Jan. 5, 1939, staff gages at several sites within 100 ft of present site at 

various datums. Jan. 5, 1939, to Apr. 9, 1949, water-stage recorder 40 ft upstream 

at datum 1 ft higher and Apr. 9, 1949, to July 9, 1951, 40 ft upstream at same datum.

Average discharge.--34 years (1909-30, 1938-51), 19.0 cfs.

Extremes.--Maximum discharge during year, 22 cfs Apr. 29 (gage height, 1.47 ft); minimum,

 2T2 c~f s Aug 27

1909-30/1938-51: Maximum discharge, 1,450 cfs Oct. 6, 1916 (gage height, 5.0 ft, 

from floodmarks, site and datum then in use), from rating curve extended above 200 cfs; 

minimum daily, 2 cfs on many days in 1939, 1940, 1941.

Remarks.--Records good. Many diversions above and below station for irrigation. Some 

water is diverted from Grass Valley to Pinto Creek for irrigation in Escalante Valley 

in Great Basin.

Revisions (water years).--W 1149: 1946(M).

Discharge, In cubic feet per second, water year October 1950 to September 1951

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

Oct.

.0

.9

.9

.0

* .0

.0

.0

.0

.0

.0

.0

.9

.9

.0

.0

.9

.9

.4

.5

.5

.5

.5

.2

.2

.2

.2

.0

.0

.2

.9

.9

126.6

4.08

251

Nov.

3.9

47o

4.0

4.4

4.4

4.2

3.9

3.9

*4.2

4.2

4.4

4.2

4.4

4.4

4.4

4.4

4.4

4.4

5.0

4.6

4.5

4.2

4.2

4.2

4.0

4.0

4.0

4.0

4.0

4.0

-

126.8

4.23

252

Dec.

4.5

4.4

4.4

4.4

4.5

4.0

3.9

3.6

3.6

3.6

3.5

3.5

3.5

3.4 3_a

3.2

3.5

3.5

*3.6

3.5

3.5

3.6

3.6

3.5

3.6

3.2

3.4

3.4

3.5

3.8

4.0

114.3

3.69

227

Jan.

3.8

4.0

4.2

4.0

4.0

3.9

3.6

3.8

3.9

3.9

4.0

4.2

4.2

4.0

4.0

4.0

4.0

4.0

*4.2

4.0

4.0

4.0

4.0

4.O

4.0

4.0

4.0

4.0

4.4

3.8

3.8

123.7

3.99

245

Feb.

3.9

4.0

4.O

4.0

3.8

3.5

3.5

3.8

4.4

4.4

5.0

5.0

4.6

4.5

5.0

5.0

5.0

4.8

4.6

4.6

5.0

5.0

5.0

4.8

5.0

5.1

5.0

5.1

_

-

-

127.4

4.55

253

Mar.

4.8

5.1

5.1

5.1

5.1

5.4

5.2

*5.2

5.2

5.2

5.0

4.8

4.8

3.9

3.8

4.2

6.0

5.6

6.0

5.8

5.6

4.8

3.8

3.9

4.2

4.2

4.2

4.0

3.9

3.9

4.0

147.8

4.77

293

Apr.

4.0

3.9

3.9

3.8

3.9

3.8

3.6

3.4

3.0

*3.1

3.1

3.0

3.0

3.0

2.9

3.1

3.2

3.6

4.0

4.2

4.O

3.9

3.9

3.9

4.2

5.4

4.6

4.5

15

8.9

-

127.8

4.26

253

May

6.5

5.8

sTs

6.0

8.6

13

16

14

12

li:

11

11

10

9.6

14

15

10

*11

10

9.9

14

17

16

16

15

15

17

14

11

11

12

369.2

11.9

732

June

13

12

9.9

7.6

8.1

7.. 8

6.5

5.6

5.0

5.0

4.4

4.5

4.5

4.4

4.6

4.5

4.5

4.5

*4.5

4.4

4.0

3.5

3.5

3.5

3.4

3.5

3.4

3.4

3.4

3^0

159.9

5.33

317

July

3.0

3.1

3.2

3.0

3.0

*2.9

3.0

3.0

2.7

2.9

*2.9

2.7

2.7

2.7

2.7

2.7

2.9

3.1

3.1

3.1

3.2

3.2

4.4

4.0

3.6

3.5

3.4

3.4

3.4

3.2

3.1

96.8

3.12

192

Aug.

3.2

3.5

6.2

5.6

4.8

3.9

3.8

3.6

3.4

3.4

3.4

3.2

3.0

3.1

3.1

3.1

3.2

*3.0

3.0

2.6

2.9

2.7

2.6

2.6

2.6

2.6

2.4

2.7

2.9

3.2

3.1

102.4

3.30

203

Sept.

2.7

2.6

2.3

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.3

2.3

2.3

2.3

2.4

*2.4

2.4

2.5

2.5

2.5

2.5

2.5

2.5

2.9

3.2

2.9

-

74.4

2.48

148

Calendar year 195O: Max 31 Mln 3.1 Mean 8.77 Ac-ft 6,350

Water year 1950-51: Max 17 Min 2.3 Mean 4.65 Ac-ft 3,37O

Peak discharge (base. 60 cfs).--No peak above base. 

* Discharge measurement made on this day.
VIRGIN RIVER BASIN 367

Santa Clara River above Winsor Dam, near Santa Clara, Utah

Location.--Lat 37°13', long. 113°47', near center of sec. 17, T. 41 S., R. 17 W., on right 

Dank 2 miles upstream from Winsor Dam, 2j miles downstream from Sandy Wash, 8 miles 

downstream from Magotsu Creek, and 9 miles northwest of Santa Clara. Prior to July 28, 

1951, at sitt 30 ft upstream at same datum.

Drainage area. 338 sq mi.

Records available .--March 1942 to September 1951'.

Gage.--Water-stage recorder. Prior to July 28, 1951, at site 30 ft upstream at same datum.

Average discharge.--9 years, 24.0 cfs.

Extremes.--Maximum discharge during year, 242 cfs Aug. 3 (gage height, 3.11 ft); minimum, 

 i.'O cfs July 24.

1942-51: Maximum discharge, 2,730 cfs July 17, 1950 (gage height, 6.50 ft), from

rating curve extended above 90 cfs on basis of slope-area determinations at gage heights

6.25 and 6.50 ft; minimum, that of July 24, 1951.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Many diversions above station for irrigation. Flow slightly regulated by plants of 

Southern Utah Power Co. Records of chemical analyses and water temperatures for the 

water year 1951 are given in Water-Supply Paper 1200.

Revisions (water years).--W 1179: 1945-47(M), 1948(P), 1949(M).

Rating table, water

and discharge, in cubic fe 

(Shifting-control method us

:ar 1950-51 (gage height, in feet, 

- - - :r second) 

ily 17-28)

1.2

1.3 1.8 

2.0

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

8.8

11

12

*9.6

9.2

11

9.6

11

10

10

7.4

8.6

9.2

9.6

8.6

9.6

10

8.8

7.7

8.4

8.8

10

9.2

10

12

9.2

10

7.1

8.8

12

297.6

9.60

590

Nov.

14

13

12

11

11

12

12

12

*11

10

10

11

13

14

13

12

11

11

13

14

14

13

13

13

12

12

13

12

12

12

-

366

12.2

726

Dec.

12

14

13

13

13

14

14

15

16

16

*16

16

16

16

18_

16

14

14

12

12

10

12

13

12

12

12

11

9.6

10

8.8

9.6

410.0

13.2

813

Jan.

10

11

*12

12

14

14

14

14

15

16

16

16

18

16

16

16

16

16

16

16

16

16

16

16

16

16

15

15

16

11

5.6

452.6

14.6

898

Feb.

9.6

*13

13

13

12

12

12

12

12

12

12

14

14

14

16

16

16

16

15

16

14

14

14

14

14

14

14

15

.

_

-

382.6

13.7

759

Mar.

16

16

17

16

16

16

15

*16

16

16

15

14

13

12

12

12

12

12

14

14

14

13

12

13

14

12

12

12

13

14

16

435

14. -0

863

Apr.

1-J:

1C

11

1J

14

14

12

\c

*12

10

11

11

10

10

11

9.2

8.8

10

12

14

10

12

10

12

15

16

17

18

21

25.

-

387.0

12.9

768

May

-0

15

12

12

13

16

18

20

19

16

15

14

14

13

15

17

19

*17

16

16

16

15

15

17

1 =

16

18

17

17

18

2_1

502

16.2

996

June

20

19

18

14

15

16

16

16

14

13

12

*10

11

11

11

10

10

*7.4

7.1

6.8

7.7

6.8

8.0

8.0

7.7

7.4

6.8

6.2

6.2

6.5

-

328.6

11.0

652

July

6.8

5.9

5.3

5.3

5.3

*5.0

6.2

5.9

4.8

5.0

4.2

4.6

5.0

6.2

5.9

4.4

5.0

3.7

5.3

2.8

3.7

6.2

5.3

2.8

5.6

6.8

*7.4

8.6

8.4

5.3

4.6

167.3

5.40

332

Aug.

8.8

9.2

17

5.0

5.6

7.1

9.2

8.4

8.0

9.6

10

7.1

8.4

8.0

8.8

8.4

8.8

8.4

7.4

9.6

6.8

6.5

6.5

7.4

5.6

5.3

7.4

8.4

7.7

7.1

7.7

249.2

8.04

494

Sept.

*7.1

5.3

5.6

7.1

5.3

7.4

7.1

5.6

4.8

6.5

6.2

8.4

6.8

6.8

7.1

4.0

8.4

a.o

5.9

6.5

6.5

5.9

4.2

7.4

7.4

6.8

6.5

13

8.8

6.5

-

202.9

6.76

402

Calendar year 1950 : Max 88 Mln 3.3 Mean 17.5 Ao-ft 12,630

Water year 1950-51 : Max 25 Mln 2.8 Mean 11.5 Ao-ft 8,290

Peak discharge (base. 500 cfs).--No peak above base. 

* Discharge measurement mad3 on this day.

Note.--No gage-height record Nox. 14-25, Apr. 27 to May 18; discharge estimated on basis of 1 discharge measurement, weather records, and records for other stations on Santa Clara River.
VIRGIN RIVER BASIN

Santa Clara River at St. George, Utah

Location.--Lat 37°04'30", long. 113°35'15", in NE£ sec. 1, T. 43 S., R. 16 W., on right 

bank half a mile above mouth and 2 miles south of St. George.

Records available.--October 1950 to September 1951. 

Gage.--Water-stage recorder.

Extremes.--Maximum discharge daring year, 1,270 cfs Sept. 28 (gage height, 7.31 ft), from 

rating curve extended above 350 cfs on basis of velocity-area study; no flow Sept. 21, 

23-27.

Remarks.--Records good. Many diversions above station for irrigation. Records of chemical 

analyses and water temperatures for the water year 1951 are given in Water-Supply Paper 

1200.

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1-31, Jan. 21 to Feb. 13, 

Mar. 28 to Apr. 13, May 29 to June 9, Sept. 28-30)

1.0

1.1

1.2

1.3

1.4

1.5 

1.7 

2.0

3.8

6.5

14

2.3 

2.6 

3.0

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8 

9

10

11

12

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

.3

.4

.4 

.4

.4

.4

.4

.8

.6

.4

.4

.4

.5

.4

.4

.4

.4

.4

*.4

.4

.4

.4 

.4

.4

.4

.4

12.0

0.39

24

Nov.

0.4

.4

.6

1.0

.8

.7

.9

1.4

. 8 

.8

2.9

1.5

2.0

5.2

3.5

3.3

3.7

3.3

3.3

4.6

5.7

5.4

8.9

7 .5

6.5

6.5 

5.2

4.4

3.7

-

99.5

3.32

197

Dec.

2.5

2.0 3~3

6.2

*7.2

3.8

3.5

4.6

2.7

2.7

4.6

7.5

6.0

6.2

4.6

5.4

7.5

6.0

4.9

6.5

7.5

5.7

6.2

6.0

3.5 

5.2

5. -7

3.8

2.1

151.3

4.88

300

Jan.

1.7

2.3

2.7

3.5

4.6

4.6

5.2

6.5

*8.5

6.0

5.7

5.2

3.8

4.1

4.1

4.4

2.7

4.6

2.3

2.1

2.5

2.1

3.3

5.7

3.5 

1.1

T75

4.4

5.7

125.6

4.05

249

Feb.

6.5

4.6

3.1

4.1

3.5

2.0

.9

1.5

1.0

1.2

1.1

*.9

1.0

1.1

1.2

1.0

1.1

1.7

1.8

1.0

1.4

1.5

1.2

1.4

1.7 

3.7

_

-

53.6

1.91

106

Mar.

2.5

8.5

6.8

8.2

9.6

7.9

3.8

*6.2

To

6.8

8.2

7.2

4.6

2.1

7.2

6.0

2.9

3.1

2.5

1.6

2.1

6.5

4.9

1.6

z'.3

1.8

1.6

2.3

151.6

4.89

301

Apr.

1.8

1.2

1.0

1.4

1.5

2.3

2.9

1.1

*1.2

1.1

1.0

2.1

1.2

1.1

1.4

1.7

1.2

1.5

1.8

1.4

1.6

2.0

1.4

1.6

1.6 

1.4

3.5

5.4

-

51.5

1.72

1.2

May

5.4

4.4

1.6

1.4

1.6

1.4

1.5

1.6

1.8

1.5

1.4

1.6

1.5

3.8

2.3

1.6

*3.7

5.2

4.1

3.5

1.7

1.5

1.2

1.4

1.1

l!2

1.1

1.1

65.2

2.10

129

June

1.8

1.5

1.8

1.6

1.4

1.4

1.4

1.4

1.6

1.0

.9

.9

.9

.8

.7

.9

*1.4

.9

.8

.8

.7

.7

.7

.6

.6 

.6

.5

.4

.5

-

30.8

1.03

61

July

0.5

.6

.5

.4

.4

.4

.3

.3

.3 

.3

.2

.2

.2

.2

.2

**13

1.7

.8

.3

.2

.2

6.9

.5

.3

.3

.2 

.2

~2.1 77

.5

.3

109.5

3.53

217

Aug.

0.2

100

120

6.0

1.4

.9

.7

.6

.6 

.6

.5

.4

.4

.5

.5

.4

.4

.4

.4

.3

.3

*.4

.3

.2

.2

.2 

.2 

.3

.9

.4

.3

238.9

7.71

474

Sept.

0.3

.3

.2

.2

.2

.2

.2

.3

.2 

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

0

.1

0

*0

0

0 

0 

*144

4.4

2.1

-

154.5

5.1?

306

Calendar year 1950: Max - Min - Mean - Ac-ft -

Water laseyear 1950-51: IMSU-SI: Max 144 Mln run0 oMean 3.41 Ac-ftI 2,470,4YO

Peak discharge (base, 400 cfs).--July 17 (time unknown) 807 cfs (5.69 ft); July 28 (7 p.m.) 1,160 

!fs (6.93 ft); Aug. 2 (10:30 p.m.) 1,090 cfs (6.71 ft); Sept. '28 (2:15 p.m.) l',270 cfa (7.29 ft). 

* Discharge Discharge measurement measurement marie made nn on this this riav. day. 

" Field estimate made on this day
VIRGIN RIVER BASIN 369

Virgin River at Littlefield, Ariz.

location. Lat 36°53 I , long. 113°56', in SWiSW£ sec. 4, T. 40 N., R. 15 W., on right bank,

 Cn"ree~-eighths of a mile downstream from Beaverdam Wash, three-eighths of a mile upstream from Littlefield, and 36 miles upstream from water line of Lake Mead at elevation 1,221 ft above mean sea level.

Drainage area. 5,090 sqmi, approximately. 

Records available. October 1929 to September 1951.

Gage. Water-stage recorder at present site since Apr. 1, 1942. Datum of gage is 1,763.68

 Tt above mean sea level, datum of 1929. Prior to May 27, 1933, staff gage at site 300 

ft upstream and May 28, 1933, to Nov. 7, 1939, at present site, both at datum 2.53 ft 

higher. Nov. 8, 1939, to Mar. 31, 1942, staff gage at present site at datum 2.00 ft 

higher.

Average discharge. 22 years, 250 cfs.

Extremes. Maximum discharge during year, 12,000 cfs Aug. 4 (gage height, 10.53 ft); mini-

 mum, 56 cfs July 3, 21.

1929-51: Maximum discharge, 22,000 cfs Mar. 3, 1938 (gage height, 12.8 ft, present 

datum, from floodmarks), by slope-area determination of peak flow; minimum observed, 

50 cfs on many days in several years, resulting from nearby fairly uniform spring inflow.

Remarks. Records good to Aug. 2, fair thereafter. Diversions above station for irrigat'.on 

or about 18,000 acres of which 600 are below station. See miscellaneous measurements for 

occasional determinations of spring inflow in this vicinity. Records of chemical analyses, water temperatures, and sediment loads for the water year 1951 are given in 

Water-Supply Paper 1200.

Revisions (water years).--W 959: 1932. W 979: 1930-31, 1933-37.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

i

5

6

7

8

9

10

11

12

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

66

64 inr

69

69

69

71

71

74

74

74

72

74

75

74

75 

SO

82

83

82 

83 

88 

93 

95

90 

90 

88 

95 

101

2,450

79.0

4,860

Nov.

99

10T

104

110

110

110

108

112

114

116

119

119

121

136

168

193

179 

179

182

226

226 

187 

176 

173 

176

160 

166 

160 

160 

*166

4,456

149

8,840

Dec.

171

158

171

166

173

171

184

179

168

153

163

166

179

182

182

171

166 

160

160

153

155 

166 

166 

150 

166

182 

176 

163 

155 

153 

163

5,171

167

10,260

Jan.

168

182

*182

179

190

201

193

173

171

168

184

204

207

IT?

176

182

190 

187

187

184

179 

176 

176 

179 

176

163 

153 

148 

TSZ 

184 

190

5,564

179

11,040

Feb.

*168

150

158

182

201

173

160

148

145

134

132

134

125

121

119

123

132 

125

125

145

143 

114 

112 

155 

129

125 

125 

129

3,902

139

7,740

Mar.

134

*166

207 r?r

168

150

148

148

145

127

166

187

173

168

163

163

168 

155

150

138

110 

95 

77 

74 

75

72 

69 

68 

68 

66 

74

4,051

131

8,040

Apr.

*90

90

78

75

72

71

72

74

72

68

65

65

74

68

66

68

69 

69

106

202

258 

160 

121 

82 

74

85 

110 

104 

295 

*598

3,501

117

6,940

May

337

261

232

198

229

248

196

158

125

85

77

75

75

77

267

*434

T9T 

193

187

158

132 

148 

155 

150 

112

83 

69 

68 

68 

65 

*64.

4,922

159

9,760

June

64

65

66

65

66

66

66

64

62

61

61

62

61

59

58

55 

59

62

62

61 

62 

62 

62 

61

62 

64 

64 

64 

62

1,877

62.6

3,720

July

62

*61

57

57

58

58

58

59

59

61

61

59

61

61

61

59

58 

58

58

61

57 

*349 

146 

90 

71

71 

68 

66 

578 

*207 

*71

2,961

95.5

5,870

Aug.

68

72

*1,170

*3.230

*141

99

85

80

74

69

68

63

61

63

65

65 

65

60

63

66 

66 

88 

86 

73

68 

61 

62 

66 

*1,580 

*290

8,415

271

16,690

Sept.

173

124

118

103

94

87

85

76

72

66

62.

66

67

67

67

66

67 

66

66

66

65 

65 

63 

65

63

63 

63 

293 

559 

152

3,111

104

6,170

Calendar year 1950: Max 1,470 Mln 62 Mean 163 Ac-ft 118,000

Water year 1950-51= Max 3,230 Mln 57 Mean 133 Ac-ft 99,930

Peak discharge <base, 1,600 cfs). AUR. 4 (6 a.m.) 12,000 cfs (10.53 ft); Aug. 30 (4 a.m.) 4,260

cfs i a(8.05 \ o . w*j ft) J. u ) .

* Discharge measurement made on this day.

Note.--Discharge Aug. 5, Sept. 5-27, 29-30 computed from one or more staff-gage readings dally
370 VIRGIN RIVER BASIN

Meadow Valley Wash near Caliente, Nev.

Location. Lat 37°33'00", long. 114°34'30", in NE^ sec. 3, T. 5 S., R. 66 E., on right 

bank 1 mile south of Etna and 7 miles southwest of Caliente.

Records available.--January to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 4,200 ft.

Extremes. Maximum discharge during period, 50 cfs Feb. 5 (gage height, 1.41 ft), from 

rating curve extended above 15 cfs; minimum daily, 0.6 cfs Aug. 24.

Remarks.--Records good except those for period of no gage-height record, which are poor. 

Several diversions above station for irrigation.

Rating table, Jan. 19 to Sept. 3O, 1951 (gage height, In feet,

and discharge, in cubic feet per second) 

(Shifting-control methotl used July 1 to Sept. 30)

0.5 

.6 

.7

3.4 

6.2

1.1 17

1.2 26

1.3 37

Discharge, in cubic feet per second, January to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

^7

28

29

30

31

Total

Mean

Ac- ft

Oct. Nov. Dec. Jan.

_

_

_

-

.

_

_

_

-

_

_

.

-

_

_

*16

13

9.7

10

13

16

16

16

16

19

22

9.3

8.8

_

_

-

Feb.

8.4

875

10

16

29

28

26

23

21

20

18

18

16

13

12

11

11

11

9.7

*9.3

11

11

12

10

8.8

8.8

9.7

13

_

-

403.5

14.4

800

Mar.

14

12

12

16

19

29

19

18

17

14

11

9.7

11

9.7

8.0

6.6

5.9

5.4

5.6

4.8

*4_i O

4.0

4.2

4.5

5.1

5.4

5.6

5.1

5.4

5.4

5.9

302.3

9.75

600

Apr.

8.0

7.1

5.6

4.5

4.8

5.6

5.6

6.6

7.1

7.5

5.9

5.9

5.9

5.4

4.0

4.

4 .

3.

3.

5.

12

7.

5.

5.

*5.

9.

9.

9.

27

27

227.5

7.58

451

May

20

15

11

8.8

7.1

5.1

3.7

2.7

2.7

2.7

2.6

2.6

2.6

2.7

3.2

4.8

4.8

5.1

4.5

3.1

2.6

2.6

2.6

2.6

*2.6

? T iii

2.1

2.6

2.6

2.6

2.4

142.2

4.59

282

June

2.1

2.1

2.1

2.2

2.4

2.4

2.2

2.2

2.2

2.2

2.1

2.2

2.2

2.4

2.4

2.6

2.7

2.4

2.1

2.1

2.4

2.6

2.9

3.1

5.1

2.2

*2.1

2.1

1.6

1.6

-

69.0

2.30

137

July

1.6

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.4

1.6

al.7

al.6

al.5

al.6

al.9

a2.0

al.8

al.8

a2.2

a5_.a

a3.0

a4.0

a3.0

a2.0

al.6

*al.5

1.4

1.4

1.4

1.4

i.1

57.4

1.85

114

Aug.

1.4

1.2

1.9

1.4

1.0

1.2

1.4

1.6

1.6

1.8

1.6

1.6

1.8

1.8

1.6

1.6

1.6

1.6

1.6

1.6

1.4

2.1

1.6

.6

.8

.8

1.0

1.0

1.4

1.4

1.4

44.4

1.43

88

Sept.

*1.4

1.4

1.4

1.4

1.4

1.4

1.4

2.2

1.8

1.2

1.2

1.2

1.4

1.4

1.4

1.4

1.4

.4

.6

.e

.e

.8.S1 .e

.e

.e

.e

1.8 i.e

1.6

-

45. S

1.53

91

Calendar year : Max Min Mean Ae-ft

Water year : Max Min Mean Ae-ft

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

ecorded range in stage, and records for nearby stations.
VIRGIN RIVER BASIN 371

Meadow

Control Pont^ni for f 

Muddy River near Overton, Nev.

36°38', long. 114 '30',. in NW^NEi sec. 21, T. 15 S., R. 67 E. , near left end 

' \^le t n?rthwest of Logandale, 5 miles downstream from 

n2 rthwest of Overton, and 7^ miles southeast of Moapa 

of Wells Siding diversion dam. P

rOXlmately) - ° f Whl° h ° nly ab ° Ut 4 < 23 ° ^ ml contributes 

toa Septembe"^5l 913 September 1916 (publiahed as "near St. Thomas"), December

Gage Water-stage recorder at present site since Dec. 13, 1947. Datum of gage is 1 433 16 

Tt above mean sea level , datum of 1929 (Bureau of Reclamation bench mark! May 1913 to

.

D n' 194? -51: Maximum discharge , 6,500 cfs Feb. 22, 1914 (gage height b<=>twe°n 

8 and 9 ft, datum then in use), from rating'curve extended above 300 cfs on basis of 

slope-area determination of peak flow; no flow at times in most years

mated! Aug 11 1941° ' 10 '° 0 ° 

' Recor s

(estimateti > Mar. 3 . 1938 , and 12,000 cfs (estiflow below Wells Siding diversion dam and inflow 

dralnaSe retu from irrigated lands entering below 

M ? irrigation downstream or for storage in Bowman 

dSd> Miscellaneous measurements of diversions in cubic feet per

*"* "-"^ ab-e stationPfor

Date

1951 

Jan. 31 

July 2

Bowman Reservoir ditch

1.7 

O

East Canal

14.0 

6.6

West Canal

17.3 

29.5

Rating table, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

2.5

7.0

17 1.1

86

155

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

.1.1

.3

.4

.5

.6

.4

.6

.7

.8

1.0

1.4

1.4

1.4

1.6

2.0

2.0

2.0

2.0

2.2

2.5

2.8 2TE

2.8

2.2

1.8

36.4

1.17

72

Jan.

1.6

1.8

*1.6

1.6

1.4

1.6

1.8

2.0

1.6

1.8

1.8

4.8

4.8

5.2

8.4

7.0

7.0

7.0

35

il

49

49

46

46

26

20

26

28

28

24

*20

508.8

16.4

1,010

Feb.

18

20

22

TZ

21

20

10

7.7

9.2

9.2

10

8.4

6.4

5.8

5.2

5.2

9.2

8.4

8.4

6.4

6.4

6.4

5.8

4.8

2.8

2.8

1.4

.8 T~

_

-

263.7

9.42

523

Mar.

0,3

T?

.2

.2

.2

0

*TJ

0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.1

0.04

2.2

Apr.

*0

TJ

0

0

0

.7

.4

0

0

0

0

0

0

0

0

0

50

100

0

0

0

0

0

0

0

0

0

*0

-

151.9

5.06

301

May

(*)

(»)

0

0

0

June

0

0

0

July

(»)

(»)

0

0

0

Aug.

0

TJ

.1

7T

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

*0

0.3

0.01

0.6

Sept.

0

0

0

Calendar year 1950: Max 28 Mln 0 Mean 2.33 Ac-ft 1,680

Water year 1950-51: Max 100 Mln 0 Mean 2.64 Ac-ft 1,910

* Discharge measurement or observation of no flow made on this day.

Mote.--Ho gage-height record Apr. 7-30; discharge estimated on basis of floodmark and records
COLORADO RIVER MAIN STEM

Lake Mead at Hoover Dam, Ariz.-Nev.

Location.--Lat 36°00 1 59", long. 114°44'10", in SW^ sec. 3, T. 30 N., R. 23 W. Gila and 

Salt River meridian, in center of Hoover Dam on Colorado River.

Drainage area.--167,800 sq mi, approximately.

Records available. February 1935 to September 1951.

Gage.--Water-stage indicator read at 12 p.m. daily. Datum of gage is mean sea level, 

powerhouse datum, which is datum in use locally and originally based on adjustment of 

1912; or 0.40 ft above mean sea level, datum of 1929, leveling of 1950.

Extremes.--Maximum contents during year, 19,763,000 acre-ft Aug. 12 (gage height, 1,168.£7 

ft); minimum, 16,483,000 acre-ft May 11 (gage height, 1,141.19 ft).

1935-51: Maximum contents, 27 790,000 acre-ft July 29, 30, 1941 (gage height, 

1,220.45 ft); minimum (since 1940), 16,218,000 acre-ft Apr. 25, 1947 (gage height, 

1,133.91 ft).

Remarks.--Reservoir is formed by concrete arch-gravity type dam; storage began Feb. 1, 

1935; dam completed Mar. 1, 1936. Total capacity, 31,047,000 acre-ft, consisting of 

the following: dead storage, 2,6SO,000 acre-ft below gage height, 895.0 ft (gate sills 

in outlet towers); usable contents, 27,207,000 acre-ft between gage heights 895.0 and 

1,221.4 ft (top of automatic spillway gates in raised position); and uncontrolled storage, 1,220,000 acre-ft between gage heights 1,221.4 and 1,229.0 ft. Reservoir is used 

to store water for flood control, irrigation, municipal water supply, and power development. Figures given herein represent usable contents. Records of chemical analyses 

and water temperatures for the water year 1951 are given in Water-Supply Paper 1200.

Diversions.--Water is pumped from point 6 miles upstream from Hoover Dam to Henderson, 

Nev., area for municipal and industrial use. Discharge measured by venturi meter. 

Diversion started Apr. 7, 1942. Two pumping plants in the Nevada side of the power 

plant at Hoover Dam pump water to Boulder City, Nev., for municipal use. Water is obtained from penstock and measured by venturi meter. Pumping began in March 1932 but 

records available only since October 1935.

Cooperation.--Records of Lake Mead collected and prepared in cooperation with Bureau of 

Reclamation. Records of diversions from Lake Mead furnished by Bureau of Reclamation.

Revisions (water years).--W 899: 1935-39.

Usable contents at 12 p.m., in thousands of acre-feet, water year Octooer 1950 to Septemoer 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

19,733

19,714

19,696

19,678

19,654

19,633

19,625

19,617

19,596

19,574

19,553

19,532

19,511

19,497

19,487

19,468

19,450

19,431

19,411

19,390

19,379

19,374

19,353

19,334

19,309

19,285

19,365

19,249

19,341

13,216

19,201

Nov.

19,176

19,157

19,132

19,116

19,110

19,089

19,072

19,049

19,021

18,991

18,972

18,964

18,933

18,909

18,888

18,869

18,853

18,828

18,824

18,808

18,790

18,777

18,776

18,765

18,757

18,749

18,735

18,721

16, 704

18,686

-

Dec.

18,673

18,663

18,661

18,649

18,633

18,617

18,605

18,586

18,579

18,578

18,559

18,538

18,517

18,497

18,478

18,471

18,467

18,443

18,433

18,411

18,387

18,372

18,367

18,365

18,364

18,343

18,323

18,305

18,284

18,262

18,259

Jan.

18,250

18,229

18,200

18,173

18,151

18,130

18,117

18,092

18,067

18,035

18,013

17,989

17,975

17,968

17,951

17,919

17,896

17,866

17,846

17,826

17,817

17,795

17,783

17,759

17,745

17,727

17,715

17,707

17,687

17,669

17,654

Feb.

17,630

17,614

17,597

17,599

17,590

17,576

17,555

17,538

17,514

17,499

17,492

17,477

17,459

17,446

17,434

17,420

17,415

17,412

17,398

17,380

17,362

17,345

17,324

17,315

17,314

17,294

17,276

17,255

_

-

Mar.

17,236

17,203

17,201

17,196

17,175

17,154

17,140

17,125

17,108

17,103

17,097

17,083

17,066

17,052

17,031

17,016

17,004

16,996

16,982

16,967

16,951

16,938

16,921

16,909

16,909

16,890

16,877

16,854

16,838

16,817

16,806

Apr.

16,804

16,790

16,772

16,757

16,744

16,734

16,729

16,727

16,715

16,699

16,680

16,666

16,650

16,640

16,640

16,623

16,611

16,595

16,386

16,574

16,565

16,565

16,548

16,539

16,527

16,515

16,505

16,505

16,508

16,500

-

May

16,496

16,497

16,492

16,488

16,493

16,502

16,507

16,509

16,503

16,493

16,483

16,486

16,500

16,506

16,520

16,536

16,556

16,571

16,591

16,621

16,638

16,654

16,668

16,694

16,725

16,767

16,819

16,861

16,909

16,976

17,043

June

17,129

17,235

17,342

17,434

17,524

17,612

17,689

17,759

17,832

17,900

17,953

17,999

18,048

18,096

18,145

18,195

18,243

18,281

18,322

18,356

18,403

18,466

18,547

18,627

18,712

18,802

18,885

18,955

19,025

19,091

-

July

19,158

19,211

19,264

19,318

19,360

19,394

19,427

19,466

19,489

19,508

19,524

19,543

19,556

19,571

19,597

19,606

19,612

19,617

19,620

19,625

19,631

19,647

19,641

19,642

19,643

19,640

19,657

19,652

19,663

19,664

19,663

Aug.

19,658

19,658

19,661

19,677

19,696

19,704

19,720

19,732

19,741

19,743

19,751

19,763

19,756

19,750

19,736

19,728

19,717

19,710

19,712

19,692

19,682

19,660

19,638

19,617

19,606

19,600

19,580

19,560

19,542

19,529

19,518

Sept.

19,528

19,549

19,568

19,563

19,551

19,535

19, 522

19,516

19,518

19,498

19,472

19,45C

19,426

19,404

19,385

19,379

19,358

19,328

19,304

19,277

19,251

19,235

19,227

19,205

19,181

19,159

19,138

19,151

19.12C

19, lie

-

Monthly gage height, contents, and diversions, water year October 195O to September 1951

Date

Calendar year 1950 . .

May...................

Water year 1950-51..

Gage height 

(feetjt

1,156.62

-

-

Lake Mead

Contents 

(acre-feet) t

19 201 000

18,259,000

-

-

Change in contents 

during month 

(acre-feet)

-427,000

-1,641,000

-620,000

Diversions

Henderson 

area 

(acre-feet)

329

5,718

6,416

to Nevada

Boulder City 

(acre-feet)

87.6

2,163

1 T*,

2,303

t Gage height and contents at 12 p.m. on last day of month.
COLORADO RIVER MAIN STEM 373

Colorado River below Hoover Dam, Ariz.-Nev.

Location. Lat 36°00'15", long. 114°44'35", in SW^NE-f sec'. 10, T. 30 N., R. 23 W. Gila 

and Salt River meridian, or NW^NE^ sec. 32, T. 22 S., R. 65 E. Mount Diablo meridian, 

on right bank 1 mile downstream from Hoover Dam.

Drainage area. --167,800 sq mi, approximately, at Hoover Dam.

Records available. October 1933 to September 1951. Prior to October 1939, published as 

"near Willow .Beach."

Gage. Water-stage recorder at present site and datum since Nov. 1, 1939. Datum of gage 

Ts 600.35 ft above mean sea level, datum of 1929, leveling of 1950; used locally as 

600.00 ft as originally determined. Prior to Nov. 1, 1939, water-stage recorder at 

site 9 miles downstream, 2 miles upstream from Willow Beach, at datum about 5 ft lower.

Average discharge. 17 years (1934-51), 14,640 cfs (not adjusted for storage in Lake Mead),

Extremes. --Maximum discharge during year, 28,100 cfs Jan. 10 (gage height, 49.74 ft); 

minimum daily, 5,880 cfs Sept. 30.

1933-51: Maximum discharge, 51,200 cfs Feb. 13, 1939 (gage height, 54.96 ft); no 

flow Feb. 10, 1935.

Remarks . Records excellent. Flow completely regulated by Hoover Dam since Feb. 1, 1935 

( see preceding page). Many diversions above Hoover Dam for irrigation and industrial 

uses. Discharge measurements generally made six times a month. Records of chemical 

analyses and water temperatures for the water year 1951 are given in Water-Supply 

Paper 1200.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Calendar year 1950 : 

Water year 1950-51 :

16,600 

Mean 13,790

Ac-ft 12,020,000 

Ac-ft 9,981,000

256684 O - 53 - 25
374 COLORADO RIVER MAIN STEM

Lake Mohave at Davis Dam, Ariz.-Nev.

Location. Lat 35°11'50", long. 114 0 34'00", in SW£sw£ sec. 18, T. 21 N., R. 21 W. Gila 

ana Halt River meridian, on forebay structure on Arizona side of Davis Dam on Colorado 

River, 29 miles west of Kingman, Ariz., and 67 miles downstream from Hoover Dam.

Drainage area. 169,300 sq mi, approximately, at Davis Dam, of which 1,520 sq mi is below 

Hoover i)am.

Records available. January 1950 to September 1951.

Gage. Water-stage recorder. Datum of gage is mean sea level, datum of 1929.

Extremes. Maximum contents during year, 1,697,000 acre-ft May 29 (elevation, 642.94 ft); 

minimum, 412,600 acre-ft Oct. 2 (elevation, 583.61 ft). 

1950-51: Maximum contents, that of May 29, 1951.

Remarks. Reservoir is formed by earth- and rock-fill dam; dam was completed April 1949 

ana storage began Jan. 17, 1950. Usable contents, 1,809,800 acre-ft (neglecting slope 

in lake) between elevations 533.39 ft (lowest point of penstock outlet) and 647.0 ft 

(top of spillway gates). Dead storage, 8,530 acre-ft below elevation 533.39 ft. Lake 

is used for power development, re-regulation for irrigation demand, and to satisfy the 

requirements of the Treaty of 1944 with Mexico. Figures given herein represent usable 

contents.

Usable contents at 12 p.m., In thousands of acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

415.3

423.7

430.1

436.7

443.1

450.1

450.8

444.0

446.3

452.8

459.8

465.4

470.5

470.3

464.6

462.5

467.9

474,3

479.4

488.3

488.0

485.1

488.0

495.1

503.0

521.9

532.1

534.7

532.8

538.5

554.9

Nov.

562.4

572.8

579.0

579.5

574.9

586.1

599.9

601.5

612.6

609.0

608.1

603.5

611.7

624.1

636.4

650.1

666.8

679.1

686.5

697.9

713.8

726.1

727.8

735.1

743.2

748.9

761.6

777.0

788.2

796.9

-

Dec.

804.0

805.2

799.7

808.2

819.0

827.4

835.7

847.1

852.4

848.7

857.5

869.3

887.6

899.3

909.9

914.4

914.8

922.7

934.5

945.5

957.0

968.5

970.2

966.8

962.4

971.5

993.3

1,005

1,018

1,027

1,030

Jan.

1,027

1,039

1,055

1,070

1,086

1,091

1,088

1,105

1,122

1,139

1,155

1,172

1,180

1,179

1,188

1,202

1,216

1,230

1,242

1,250

1,249

1,259

1,270

1,278

1,283

1,290

1,296

1,295

1,309

1,319

1,329

Feb.

1,336

1,343

1,347

1,343

1,349

1,356

1,362

1,369

1,375

1,376

1,372

1,380

1,387

1,394

1,402

1,408

1,405

1,401

1,411

1,420

1,433

1,442

1,456

1,459

1,454

1,465

1,480

1,494

_

_

-

Mar.

1,507

1,522

1,526

1,523

1,536

1,546

1,557

1,563

1,572

1,571

1,566

1,570

1,576

1,582

1,588

1,594

1,586

1,574

1,577

1,579

1,581

1,582

1,583

1,577

1,561

1,560

1,563

1,560

1,558

1,559

1,549

Apr.

1,534

1,528

1,523

1,517

1,512

1,507

1,497

1,483

1,480

1,481

1,475

1,478

1,475

1,473

1,465

1,468

1,474

1,480

1,489

1,495

1,498

1,495

1,497

1,498

1,503

1,506

1,507

1,506

1,503

1,509

May

1,517

1,528

1,538

1,547

1,549

1,549

1,556

1,563

1,570

1,581

1,592

1,592

1,593

1,601

1,613

1,622

1,630

1,642

1,649

1,648

1,657

1,666

1,672

1,681

1,688

1,690

1,691

1,697

1,696

1,681

1,679

June

1,677

1,670

1,666

1,660

1,654

1,650

1,647

1,647

1,643

1,639

1,637

1,634

1,626-

1,617

1,607

1,599

1,591

1,581

1,569

1,560

1,552

1,541

1,532

1,523

1,512

1,498

1,486

1,481

1,476

1,470

-

July

1,461

1,452

1,444

1,424

1,414

1,417

1,412

1,404

1,396

1,391

1,384

1,376

1,368

1,362

1,353

1,345

1,338

1,334

1,324

1,318

1,311

1,301

1,294

1,288

1,282

1,275

1,276

1,276

1,274

1,271

1,270

Aug.

1,266

1,264

1,264

1,256

1,247

1,242

1,242

1,240

1,238

1,238

1,227

1,213

1,211

1,213

1,215

1,219

1,221

1,214

1,202

1,199

1,202

1,206

1,210

1,214

1,210

1,196

1,204

1,230

1,250

1,269

1,282

Sept.

1,281

1,272

1,256

1,260

1,269

1,280

1,288

1,287

1,279

1,286

1,302

1,310

1,323

1,334

1,339

1,336

1,343

1,356

1,367

1,378

1,388

1,389

1,381

1,390

1,390

1,391

1,390

1,394

1,386

1,374

-

Monthly elevation and contents, water -year October 1950 to September 1951

Date

Sept. 30................

Water year 1950-51...

Elevation 

(feet)t

630.60

-

Contents 

(acre-feet)

1,374,000

Change In contents 

during month 

(acre-feet)

+92,000

+949,500

t Elevations at 12 p.m.
COLORADO RIVER MAIN STEM 375

Colorado River below Davis Dam, Ariz.-Nev.

Location. Lat 35°11'30", long. 114°34'15", in SEijNEir sec. 1, T. 32 S., R. 66 E. Mount 

Ciablo meridian, on right bank, half a mile downstream from Davis Dam, 29 miles west of 

Kingman, Ariz., and 68 miles downstream from Hoover Dam.

Drainage area.--169,300 sq mi, approximately. 

Records available.--March 1949 to September 1951.

Gage. Water-stage recorder at present site since May 3, 1949. Datum of gage is 500.00 ft 

above mean sea level, datum of 1929. Prior to May 3, 1949, water-stage recorder at site 

half a mile downstream at same datum.

Extremes. Maximum discharge during year, 26,000 cfs June 25 (gage height, 13.64 ft); minimum, 10 cfs Dec. 27 (gage height 3.34 ft).

1949-51: Maximum discharge, 26,400 cfs Apr. 15, 1949; no flow at Davis Dam parts of 

several days July to September, and Dec. 27, 1950, when gates in dam were closed.

Remarks.--Records excellent. Flow regulated by Hoover and Davis Dams (see preceding 

pages). Many diversions above station for irrigation and industrial uses. Discharge 

measurements generally made once a week.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

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.

15.50O 

7,550

12,300

12,400

12,600

12,700

12,80O 

12,9OO

12,900

13,OOO

13,100

13,100

13,20O 

13,20O

13,2OO

13,100

12,50O

11,900

12,000

11,600

10,800

10,800

10,700

10,800

10,900

5,990

10,466

10,400 

10,400 

10,400

6,090

357,230

11,520

708,600

Nov.

11.2OO 

11,300

11,200

11,400

11,40O

6,460

7,O8O 

14,400

14,160

14,1OO

13,400

12,800

11,10O 

10,000

10,100

8,940

7,100

6,640

7,280

7,100

6,960

7,250

6,870

5,970

5,600

6,410

6,900

5.570 

9,570 

10,400

-

278,400

9,280

552,200

Dec.

11. OOP 

10,400

1O.300

9,780

8,97O

9,330

9,690 

9,540

9.3OO

9.36O

9,330

9,69O

7,420 

10,600

10,300

9,180

9,210

9,480

9,990

10,20O

10.4OO

10,200

9,480

9,360

9,480

9,?40

5.150

16,806 

10,300 

9,390

9,450

296,500

9,558

587,700

Jan.

9,510 

9,63O

9,810

10,400

10,100

1O,8OO

12.200 

8,500

9,570

9,700

9,600

9,39O

8,850 

8.520

8,940

8.75O

9,050

9.56O

9,420

9,350

9,690

9,480

9,180

9,75O

9,490

9,510

9,540

9,540 

9,480 

9,450

9,810

296,130

9,553

587,400

Feb.

9,54O 

9.6OO

9,570

9,650

9,480

9,510

9.54O 

9,966

9,420

9,45O

9,480

9,450

9,450 

9,510

9,870

10,2OO

1O.200

10.4OO

10.2OO

1O.30O

10,100

10,400

10,300

10,200

10,3OO

10,300

10,400

10,500

-

276,800

9,886

549,000

Mar.

10,5OO 

1O.5OO

16,666

10,400

10,700

1O,7OO

10,8OO 

11,000

11,500

11,7OO

1O,800

11,100

11,3OO 

11,200

11.5OO

14,400

14.00O

15,500

15,900

15,800

15,700

14,300

14,400

14,400

15,000

15,500

15,600

15,400 

16,300 

16.400

16,106

400,600

12,920

794,600

Apr.

16.6OO 

17,000

17,500

17.700

17,600

16,80O

16,700 

16.9OO

16,800

16,900

17,1OO

15,300

16,600 

14,200

12,500

14,200

11.8OO

11,90O

11,500

11,900

12,000

11,000

12,800

12,700

12,400

12,100

12,500

12,400 

10.700 

11,566

-

427,600

14,250

848,100

May

11,600 

11,600

12,000

11,9OO

11,600

1O,80O

11,500 

12,500

12,500

12,000

11,60O

11,500

9.270 

10,966

10,500

11,400

11,500

11,6OO

11,500

10,OOO

12,000

12,400

12,100

12,900

12,800

12,100

9,800

13,400 

14,200 

14,400

14.700

367,370

11,850

728,700

June

14,400 

12,800

9.810

15,200

15,400

15,900

15,800 

13,40O

15,OOO

10,000

15,500

16,000

17,100 

16,7OO

17,100

14,200

12,2OO

17,600

18,500

17,600

17,900

17,800

14,600

12,500

19.400

19,100

18,800

16,300 

16,300 

14,600

-

463,310

15,44'0

919,000

July

12,300 

17,200

17,700

17,600

17,900

14,OOO

14,200 

12,700

17,700

18,70O

18,3OO

18,700

19,OOO

14,966

15,500

17,800

18,30O

17,80O

17,900

18,400

14,900

14,300

16,800

17,900

18,200

18,000

15,800

12,000 

10.200 

15,566

16,500

504,500

16,270

LJSOL.OOO

Aug.

16,80O 

16,9OO

14,90O

14,800

12,900

15,6OO

16.4OO 

16.40O

17,OOO

16.1OO

16,OOO

16,000

17.400 

16,860

16,800

16,2OO

16,2OO

15,900

16,700

16,700

15,900

15,600

15,600

15,400

15,300

15,200

11,6OO

5.710 

6.S70 

6,500

10,100

455,980

14,710

904,400

Sept.

15,200 

12,600

15,900

13,800

13,200

15,100

15,100 

15,800

15.9OO

12,600

12,lOO

12,500

11,4OO 

11,900

11,900

11,500

11 , 7OO

11,400

11,400

11,700

11,500

11,500

11.200

11,366

14.800

14,800

14,600

14,400 

13,800 

13,100

-

381,700

12,720

757,100

Calendar year 1950: Max 23,200 Min 285 Mean 14,970 Ac-ft 10,830,000

Water year 1950-51: Max 19,400 Min 5,130 Mean 12,340 Ac-ft 8,938,000
COLORADO RIVER MAIN STEM

Colorado River at Needles, Calif.

Location. --La t 34 0 51'05", long. 114°36'25", in SE^SEt sec. 19, T. 9 N. , R. 23 E. San 

Eernardino meridian, on right bank at Needles, 18 miles upstream from gaging station 

near Topock, Ariz., 31 miles downstream from Davis Dam, and 98 miles downstream from 

Hoover Dam.

Drainage area. 170,600 sqmi, approximately. 

Records available.--April 1931 to September 1951 slevations only).

Gage. Water-stage recorder at present site since May 15, 1942. Datum of gage is 466.23 

Ft above mean sea level, datum of 1929; gage readings have been reduced to elevation 

above mean sea level. Prior to May 15, 1942, at site 750 ft downstream at same datum.

Extremes.--Maximum elevation during year, 474.53 ft June 20; minimum, 466.95 ft Aug. 29. 

 1931-51: Maximum elevation, 475.77 ft Nov. 30, 1944; minimum, 466.11 ft Aug. 4, 

1950.

Remarks. Flow regulated by Hoover and Davis Dams (see four preceding pages). 

Revisions (water years). W 1119: 1931-47.

Elevation, In feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

472.56

472.11

470.72

472.19

472.23

472.25

472.28

472.28

472.27

472.27

472.31

472.33

472.36

472.39

472.39

472.36

472.33

471.96

471.91

471.93

471.62

471.48

471.47

471.47

471.49

470.11

469.87

471.33

471.36

471.35

470.99

Nov.

470.02

471.65

471.68

471.70

471.77

471.36

469.93

470.62

472.78

472.67

472.65

472.30

472.18

471.35

471.28

471.28

470.40

469.88

469.92

470.12

469.86

470.11

469.89

469.84

469.30

469.43

469.71

469.89

470.04

471.28

-

Dec .

471.59

471.61

471.48

471.45

470.05

470.01

471.13

471.25

470.09

471.11

471.10

471.17

470.94

470.87

471.67

471.30

471.11

471.12

471.33

471.43

471.51

471.60

471.35

471.22

471.19

472.20

470.23

470.50

471.77

471.35

471.25

Jan.

471.26

471.29

471.34

471.44

471.50

471.63

472.04

471.39

470.83

471.37

470.21

471.17

471.00

470.76

470.90

470.88

470.97

471.03

471.28

471.21

471.35

471.27

471.16

471.13

471.44

471.23

471.29

471.28

471.24

471.25

471.31

Feb.

471.40

471.30

471.31

471.32

471.34

471.29

471.08

471.54

471.32

471.25

471.25

471.23

471.24

471.23

471.19

471.33

471.53

471.46

471.40

471.49

471.38

471.44

471.49

471.45

471.45

471.47

471.44

471.43

-

-

-

Mar.

471.48

471.48

471.44

471.49

471.50

471.58

471.58

471.71

471.67

471.78

471.97

471.59

471.74

471.73

471.76

472.19

472.77

472.36

472.71

472.64

472.58

472.70

472.80

472.58

473.06

473.10

473.08

473.03

473.13

473.35

473.22

Apr.

473.34

473.28

473.51

473.52

473.53

473.42

473.28

473.30

473.33

473.34

473.40

473.32

472.74

473.52

472.13

472.89

472.32

471.94

472.09

471.62

472.11

471.78

471.84

472.30

472.19

472.04

472.19

472.13

471.98

471.56

May

472.08

471.92

471.97

472.05

472.04

471.92

471.66

471.92

472.51

472.18

472.21

471.98

471.91

471.21

471.81

471.71

471.90

472.21

472.14

471.86

471.66

472.24

472.42

472.46

472.66

472.45

472.08

471.79

472.81

473.15

473.22

June

473.02

473.04

472.36

472.09

473.27

473.62

473.27

473.27

472.74

472.37

471.83

473.28

473.47

473.84

473.63

473.49

472.65

472.64

474.10

473.65

473.87

473.59

473.56

472.65

472.33

471.19

470.73

470.46

469.80

469.78

July

469.00

469.38

469.53

469.48

469.58

469.35

469.09

469.08

469.09

469.86

469.64

469.90

469.77

469.63

469.65

469.57

470.13

470.02

470.02

470.22

469.98

469.69

469.60

469.93

469.98

469.62

469.51

468.74

468.50

468.51

469.22

Aug.

469.04

469.35

469.34

469.17

469.12

468.96

469.42

469.41

469.58

469.52

469.47

469.30

469.48

469.41

469.77

469.60

469.58

469.56

469.86

469.28

469.65

469.36

469.42

469.16

469.27

469.51

469.02

467.87

467.35

468.01

467.51

Sept.

468.47

468.46

463.56

468.59

468.40

468.36

468.36

468.24

468.41

468.20

468.16

468.25

467.95

468.06

468.19

468.35

468.20

468.09

468.01

467.97

468.04

467.99

468.09

467.92

468.24

468.76

468.63

468.53

468.47

468.47
COLORADO RIVER MAIN STEM 377

Colorado River near Topock, Ariz.

Location Lat 34°41'15", long. 114°27 1 4S", in w£ sec. 13, T, 15 H. , R. Si W Gila and 

salt Kiver meridian, on left bank in Mohave Canyon, 3 miles downstream from Topock, 39 5 

miles upstream from Parker Dam, and 49 miles downstream from Davis Dam.

Drainage area. 172 ,300 sq mi, approximately. 

Records available . January 1917 to September 1951.

Gage Water-stage recorder at present site since Dec. 3, 1922. Datum of gage is 423 02 

Ft above mean sea level, datum of 1929. Gage readings have been reduced to elevations 

above_mean sea level. Prior to Dec. 3, 1922, at-site about 1 mile upstream at different 

datum, iince May 1, 1939, auxiliary water-stage recorder at bridge at Topock, 2 7 miles 

upstream from base gage.

Average discharge. 17 years (1917-34), 20,260 cfs; 17 years (1934-51), 14,080 cfs (unadJ USLSQ) .

Extremes. Maximum daily discharge during year, 22,200 cfs June 26; maximum elevation, 

44JFIn ft June 27; minlmum daily discharge, 5,600 cfs Aug. 30; minimum elevation,

1917-34: Maximum discharge probably exceeded 200,000 cfs June 22, 1921; minimum, 

1,480 cfs Aug. 17, 1934.

1935-51: Maximum discharge, 35,700 cfs Jan. 29, 1942; maximum elevation, that of 

June 27, 1951; minimum discharge, 375 cfs Feb. 14, 1935; minimum daily, 422 cfs Feb. 14, 

19o5.

Discharge of about 300,000 cfs (based on determination at Lees Ferry gaging station) 

occurred about July 10, 1884. Discharge in excess of 400,000 cfs (estimated) probably 

occurred within the period 1857-68 and most likely in 1862.

Remarks.--Records excellent. Discharge measurements generally made twice a month. Many 

diversions above station for irrigation and industrial uses. Discharge regulated by 

Hoover Dam since Feb. 1, 1935, and by Davis Dam since Jan. 17, 1950. Elevations given 

are to datum of 1929.

Revisions water year?).-- W 918: 1921.

Elevation, In fe er year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

450.63

450.82

450.60

449.63

450.13

450.35

450.43

450.50

450.56

450.57

450.60

450.67

450.69

450.76

450.84

450.91

450.94

450.95

450.81

450. 7b

450.79

450.70

450.63

450.58

450.60

450.63

450.36

450.00

450.28

450.28

450.36

Nov.

450.08

449.78

450.16

450.45

450.57

450.72

450.55

450.08

450.13

450.99

451.51

451.78

451.87

451.84

451.64

451.55

451.52

451.29

451.01

450.76

450.61

450.36

450.26

450.07

449.87

449.52

449.27

449.17

449.02

449.11

-

Dec.

449. 5E

449.67

450.05

450.05

449.99

449.86

449.76

449.77

449.81

449.78

449.76

449.74

449.76

449.64

449.60

449.87

449.85

449.74

449.71

449.80

449.88

449.93

449.99

449.94

449.86

449.82

449.80

449.33

449.28

449.80

449.78

Jan.

449.59

449.71

449. 72

449.72

449.77

449.79

449.93

450.25

450.10

449.78

449.87

449.89

449.86

449.78

449.63

449.62

449.59

449.60

449.63

449.64

449.63

449.72

449.71

449.53

449.64

449.74

449.76

449.76

449.78

449.72

449.67

Feb.

449.75

449.84

449.72

449.82

449.84

449.84

449.83

449.74

449.88

449.88

449.86

449.84

449.74

449.80

449.82

449.80

449.83

449.86

449.80

449.82

449.90

449.95

449.95

449.95

449.96

450.05

450.06

450.04

_

-

Mar.

450.08

450.12

450.07

450.12

450.17

450.16

450.17

450.20

450.27

450.30

450.28

450.41

450.36

450.33

450.40

450.43

450.57

451.00

451.04

451.18

451.24

451.20

451.26

451.32

451.26

451.41

451.57

451.60

451.64

451.72

451.88

Apr.

451.91

451.97

452.00

452.16

452.32

452.44

452.39

452.29

452.27

452.28

452.28

452.29

452.22

451.98

452.12

451.62

451.65

451.48

451.30

451.28

451.17

451.26

451.21

451.22

451.39

451.47

451.45

451.55

451.51

451.39

May

451.29

451.34

451.33

451.40

451.48

451.56

451.47

451.41

451.47

451.65

451.75

451 67

451.61

451.44

451.20

451.21

451.23

451.26

451.33

451.29

451.06

450.96

451.14

451.22

451.25

451.32

451.24

450.98

450.91

451.22

451.44

June

451.57

451.60

451.61

451.32

451.23

451.59

451.90

451.95

451.89

451.62

451.25

451.01

451.42

451.81

452.18

452.26

452.12

451.58

451.54

452.34

452.49

452.59

452.54

452.38

452.40

453.74

453.75

453.66

453.14

452.86

-

July

452.31

452.05

452'. 47

452.68

452.79

452.77

452.15

451.99

451.63

452.34

452.56

452.83

452.92

452.75

452.47

451.95

452.52

452.67

452.78

452.87

452.93

452.65

452.31

452.48

452.92

453.04

453.18

452.69

452.06

451.46

452.04

Aug.

452.20

452.42

452.69

452.49

452.33

451.92

452.21

452.39

452.51

452.67

452.59

452.54

452.48

452.67

452.74

452.76

452.64

452.54

452.73

452.56

452.77

452.52

452.54

452.49

452.43

452.44

452.29

451.36

450.04

449.22

450.05

Sept.

450.60

. 451.14

451.24

451.53

451.46

451.28

451.36

451.33

451.57

451.46

451.30

451.21

451.14

450.95

450.94

451.00

450.94

450.98

450.97

450.93

450.97

450.84

450.84

450.80

450.78

451.49

451.73

451.81

451.74

451.58

-
378 COLORADO RIVER MAIN STEM

Discharge, in cubic feet per second, of Colorado River near Topock, Arlz., 

water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 , 500

14 , OOP

12,200

10,000

11,600

12,400

12,600

12,800

12,800

12,800

12,800

12,800

12,800

12,900

15,000

13,000

13,000

12,900

12,200

11,800

11,700

11,100

10,600

10,500

10,400

10,400

9,170 

8,260 

9,390

9,870

9,810

363,100

11,710

720,200

Nov.

8, 680

8,170

9,670

10,400

10,700

10,800

9,560

7,750

8,850

11,800

12,800

15,200

12,700

12,000

10,800

10,500

10,000

8,830

7,840

7,500

7,410

7,020

7,060

6,930

6,620

5,970

5,940 

6,160 

6,230

6,980

268,650

8,955

532,900

Dec.

8,770

9,890

10,400

10,300

10,200

9,570

9,290

9,390

9,530

9,320

9,290

9,260

9,340

8,790

8,840

9,870

9,580

9,130

9,050

9,310

9,790

9,760

9,950

9,630

9,370

9,280

9,210 

7,570 

7,7SO

9,560

9,540

290,500

9,371

576,200

Jan.

9,310

9,300

9,240

9,350

9,560

9,690

10,000

11,300

10,400

9,180

9,470

9,630

9,490

9,260

8.760

8,790

8,780

8,810

9,020

9,050

9,100

9,470

9,520

9,140

9,180

9,500

9,450 

9,390 

9,530

9,480

9,260

591,390

9,400

578,000

Feb.

9,470

9,660

9,600

9,580

9,580

9,540

9,450

9,070

9,610

9,580

9,530

9,410

9,230

9,230

9,360

9,330

9,450

9,630

9,650

9,530

9,680

9,700

9,880

9,900

9,840

9,880

9,960 

9,960

_

-

268,290

9,582

532,100

Mar.

9,980

10,100

10,100

10,200

10,200

10,200

10,300

10,300

10,500

10,700

10,600

11,000

10,600

10,600

10,400

10,400

11 , 500

13,000

12,800

13,300

13,400

13,300

13,600

13,800

13,600

14 , 200

14,800 

15,000 

14,900

15,300

15,900

574,580

12,080

743,000

Apr.

16,000

16,300

16,300

16 , 900

17,400

17,800

17,500

17,000

16,900

16,800

16,700

16,800

16,300

15,500

15,700

13,500

13,700

12,700

11,700

11,500

11,100

11,600

11.100

11,500

12,100

12,200

11,900 

11,800 

11 , 600

11,100

429,000

14,300

850,900

May

10,500

10,800

10,700

10,900

11,000

11,100

10,800

10,500

11,000

11,400

11,500

11,500

11,000

10,700

10,200

10,500

10,600

10,800

11,100

11,200

10,400

10,400

11,100

11,600

11,700

12,200

11,900 

11,000 

10,900

12,300

15,400

344,700

11,120

683,700

June

13,900

13,800

13,600

12,000

12,100

13,800

15,200

15,200

14,800

13,800

12,300

11,700

13,600

15,000

16,400

16,600

15,800

13,800

13,800

16,800

17,100

17,600

17,100

16,700

16,600

22,200

20,600 

19,800 

18,000

16,900

466, 600

15,550

925,500

July

15,000

14,000

15,700

16,500

16,800

16,600

14,600

14,000

13,100

15,800

16,600

17,500

17,200

16,700

15,600

14,100

15,900

16,400

16,700

17,000

17,000

16,100

14,900

15,600

16,700

17,300

17,400 

15,600 

13,700

11,700

14,400

486, 200

15,680

964,400

Aug.

14,900

15,600

16,200

15,500

15,100

13,700

14 , 900

15,300

15,800

16,400

16,000

15,700

15,600

15,800

16,200

16,100

15,800

15,500

16,500

IS, 600

16,300

15,200

15,500

15,300

15,100

15,300

14,600 

11,700 

7,680

5,600

6,920

451,400

14,560

395,300

Sept.

9,550

ll , 300

11 , 900

12,900

15,000

12,500

12,700

12,800

13,400

13,000

12,600

12,200

11,800

11,300

11,200

11,500

11,000

11,100

11,000

10,800

11,000

10,800

10,800

10,600

10,800

12,900

13,500 

13,800 

13 , 600

13,400

358,550

11,950

711,200

Calendar year 1950: Max zz 200 Min 803 Mean 14,700 Ac-ft 10,640,000

Water year 1950-51: Max 22,200 Mln 5,600 Mean 12,040 Ac-ft 8,713,000
BILL WILLIAMS RIVER BASIN 379

Santa Maria River near Alamo, Ariz.

Location. Lat 34°18', long. 113°31', in NEijSWij sec. 9, T. 11 N., R. 12 W., on right bank 

hall' a mile upstream from confluence with Big Sandy River and 5-5- miles upstream from 

Alamo.

Drainage area.--1,520 sq mi, approximately.

Records available.--December 1939 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 1,124.1 ft above mean sea level (from riverprofile survey). Prior to Apr. 1 at site 800 ft upstream at datum 2.50 ft higher.

Average discharge.--11 years, 42.6 cfs.

Extremes.--Maximum discharge during year, 33,600 cfs Aug. 29 (gage height, 12.95 ft); minimum daily, 0.9 cfs on several days in October and August.

1939-51: Maximum discharge, that of Aug. 29, 1951; minimum, less than 1 cfs on many 

days in most years.

Remarks.--Records poof. Diversions above station for irrigation of about 2,000 acres, 

most of which are pumped from ground water.

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

1.0

1.0

1.0

*1.0

_.£

.9

.9

.9

.9

1.0

.9

.9

.9

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

30.7

0.99

61

Nov.

*1.2 T75

1.2

1.2

1.2

1.3

1.3

1.3

'1/3

1.3

1.3

1.4

1.4

1.4

1.5

1.5

1.6

1.6

1.6

1.6

1.7

1.7

1.7

1.7

1.8

1.8

1.8

1.8

1.8 

1.8

45.0

1.50

89

Dec.

1.9

T79

1.9

2.0

2.0

*2.0

2.0

2.0

2.1

2.1

2.2

2.2

2.2

2.3

2.3

2.4

2.4

2.4

2.5

2.5

2.5

2.5

2.5

2.5

2.6

2.6

2.6

2.7

 S77 

2.7 

2.7

71.9

2.32

143

Jan.

2.7

277

2.7

2.7

*2.7

2.7

2.7

2.7

2.7

2.8

2.8

4.7

4.0

3.4

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

5.1 

6.1 

TT?

103.0

3.32

204

Feb.

*3.7

777

3.7

3.7

3.7

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.5

3.5

3.4 774"

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

:

98.5

3.52

Mar.

'*3.4 774"

3.4

3.3

3.3

3.3

3.3

3.2

373

3.3

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2 

3.2 

3.2

100.6

3.25

195 j 200

Apr.

3.2

*3.2

3.3

3.3

3.3

3.3

3.3

3.3

3.2

3.1!

3.1

3.1

3.0 "376

3.0

3.0

3.0

3.0

3.0

4.4

3.6

3.3

3.2

3.2

3.3

3.3

3.2

3.2 

5.3

123.8

4.13

246

May

16 -8.5

*3-.0

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.9

2.9

2.8

2.8

2.6

2.6

2.5

2.4

2.5

2.5

2.4

2.3

2.3

2.4

2.3

2.3

2.2 

272 

2.2

99.8

3.22

198

June

2.2

2.2

2.3

2T2

2.2

2.1

*2.0

2.0

2.0

2.1

1.9

2.0

2.0

1.9

1.9

1.9

1.9

1.8

1.7

1.7

1.8

1.6

1.6

1.5

1.7

1.8

1.8

i!s

56.4

1.88

112

July

1.4

1.3

1.3

1.2

1.2

1.2

*1 I'.Z.1

1.2

1.2

1.3

1.3

1.3

1.1

1.1

1.0

T7T

i!o

1.3-

1.1

1.0

1.0

1.0

1.0

1.0

1.0

2.7

5.0

l!l 

1.0

41.2

1.33

82

Aug.

*0.9

92

24

28

5.9

4.0

3.2

2.7

2.2

1.9

1.7

1.5

1.4

1.2

1.2

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.9

.9

.9

.9

1.2

*15,500 

*3.310 *302

19,338.8

624

38,360

Sept.

*70

*22

20

18

16

15

15

13

13

11

10

9.4

11

10

8.5

8.5

8.5

7.6

6.7

6.7

5.8

6.7

6.7

6.7

5.8

4.9 "575

4.9 

4.9

377.1

12.6

748

Calendar year 1950: Max 42 Mln 0.8 Mean 3.33 Ac-ft 2,410

Water year 1950-51: Max 15,500 Mln 0.9 Mean 56.1 Ac-ft 40,640

Peak discharge (base, 200 efs). Aug. 2 (12 p.m.) 1,180 cfs (7.85 ft); Aug. 29 (4:30 p.m.) 33,600 

cfs (12.95 ft)T

* Discharge measurement made on this day.
BILL WILLIAMS RIVER BASIN

Bill Williams River near Alamo, Ariz.

Location.--Lat 34°14 T , long. 1I3°35', in SW^NW^ sec. 2, T. 10 N. , R. 13 W. , on left bank

l.b miles downstream from Alamo, 2.0 miles downstream from Dullard Wash, and 6 miles

downstream from confluence of Santa Maria and Big Sandy Rivers. 

Drainage area.--4,730 sq mi, approximately, of which 400 sq mi is below confluence of

santa Maria and Big Sandy Rivers. 

Records available. December 1939 to September 1951. Prior to October 1943, published as

"Williams Kiver." 

Gage. Water-stage recorder. Datum of gage is 1,003.95 ft above mean sea level, datum of

Average discharge. 11 years (1940-51), 121 cfs.

extremes.--Maximum discharge during year, 65,100 cfs Aug. 29 (gage height, 30.8 ft); mini-

 mum daily, 4.4 cfs July 3-8.

1939-51: Maximum discharge, that of Aug. 29, 1951; minimum, 3 cfs Aug. 21, 1942, 

several days in May and July 1943, and July 24, 1946.

Revisions.--Maximum discharge for the water year 1941 has been revised to 46,000 cfs 

Mar7"J.4, 1941 (gage height, 23.0 ft), superseding figure published in Water-Supply Pape 

929.

Flood of Sept. 6, 1939, reached a sta

Rem

oo o ep. , , reace a sage of 39.6 ft, from floodmarks (discharge, 

86,000 cfs, revised, from rating curve extended above 50,000 cfs on basis of slope-area 

determination of peak flow made just below confluence of Santa Maria and Big Sandy 

Rivers). Floodmarks indicated a previous stage of about 46 ft.

arks. --Records poor. Diversions above station for irrigation of about 3,000 acres, most 

or wnich are pumped from ground water. During year the Big Sandy River at mouth was 

measured as follows: Apr. 1, 0.80 cfs; May 3, 0.29 cfs; June 7 and Aug. 1, no flow. 

At low stages some ground-water inflow occurs below this station as shown by the following measurements.

Date

Apr. 1 

May 3 

June 7

At 

gage

8.81 

9.34 

6.08

500 ft 

below 

gage

9.65 

10.6 

6.47

800 ft 

below 

gage

9.49 

10.2 

6.47

1,200 ft 

below 

gage

8.75 

10.0 

6.34

Revisions.--Revised peak discharges for the water year 1941, superseding figures published 

in Water-Supply Paper 929, are given herewith:

1940-41: Dec. 25 (5:40 a.m.) 32,900 cfs; Mar. 2 (2:30 a.m.) 44,800 cfs; Mar. 14 

(9:40 p.m.) 46,000 cfs; Apr. 13 (11:20 p.m.) 32,800 cfs.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

6.5

6.7

6.8

*6.8

6.8

6.8

6.7

6.7

6.7

6.5

6.5

6.5

6.5

6.4

6.4

6.4

6.3

6.3

6.2

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.2

^73

6.2

6.2

200.3

6.46

397

Nov.

*6.0

6.5

6.7

6.8

6.9

6.9

7.0

7.0

7.2

7.2

7.3

7.4

7.6

7.8

7.8

8.0

8.0

8.0

8.0

8.1

8.1

8.1

8.2

8.1

8.2

8.2

8.2

8.2

8.4

226.2

7.54

449

Dec.

8.4

874

8.5

8.5

8.7

*8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.8

8.8

9.0

9.1

9.1

9.3

9.3

9.3

9.4

9.4

9.5

9.7

97Z

9.7

9.7

9.7

279.0

9.00

553

Jan.

9.7

9^7

9.8

*9.8

9.8

9.8

9.8

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

1011

15

309.1

9.97

613

Feb.

no

TO

10

10

10

10

10

10

10

10

9.8

9.8

9.8

9.8

9.7

9.5

9.5

9.4

9.4

9.4

9.3

9.3

9.3

9.3

9.3

9.1

9.1

9.1

_

-

269.9

9.64

535

Mar.

*9.1

9.1

9.1

9.1

9.1

9.1

9.1

9.3

975

9.1

9.1

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

9.0

8.8

878

8.8

8.8

8.8

8.8

8.8

8.8

8.8

8.8

278.5

8.98

552

Apr.

*8.8

9.0

9.1

9.1

9.5

9.5

9.7

9.4

9.3

9.0

9.0

9.0

9.0

9.0

9.0

9.0

*9.0

8.7

8.8

*_13

10

9.3

9.0

8.8

8.8

9.0

9.0

8.8

8.8

8.8

-

276.2

9.21

548

May

1512-

*9.1

9.0

8.5

8.4

8.2

8.2

8.1

8.1

8.0

8.0

8.0

8.2

8.2

8.1

7.8

7.8

7.6

7.4

7.3

7.3

7.2

7.2

7.0

6.9

6.8

6.7

6.5

6.5

6.4

249.5

8.05

495

June

6.4

173

6.3

6.2

6.2

6.0

*5.9

5.8

5.8

5.7

5.5

5.4

5.3

5.2

5.2

5.1

5.1

5.0

5.0

5.0

4.9

4.8

4.8

4.8

4.8

4.7

4.7

4.6

4.6

4.5

159.6

5.32

317

July

.5

.5

~.4

.4

* .4

,4

.4

.5

.5

.5

.6

.7

.7

.7

.8

.7

.6

.7

.6

.5

.5

.6

.7

.9

.5

.1

.0

57T

5.0

5.0

145.9

4.71

289

Aug.

*5.0

8.9

203

19

92

11

8.2

7.0

6.4

6.2

5.8

5.5

5.4

5.3

5.2

5.2

5.2

5.0

4.9

4.9

5.7

5.0

4.9

4.8

T78

4.8

5.0

5.5

"23,400

5,300

730

29,889.6

964

59,280

Sept.

*435

213

*119

103

96

86

76

68

60

50

40

-

I »_

|

J

 20

15

-

1,881

62.7

3,730

Calendar year 1950: Max 211 Mln 4.8 Mean 9.87 Ac-ft 7,150

Water year 1950-51: Max 23,400 Mln 4.4 Mean 93.6 Ac-ft 67,760

Peak discharge (base. 900 cfs).--Aug. 3 (3 a.m.) 1,340 cfs (6.48 ft); Aug. 29 (6 p.m.) 65,100 cfs 

(30.8 ft).

* Discharge measurement made on this day.

Note. No gage-height record Sept. 9-30; discharge estimated on basis of weather records, and record for Santa Maria River near Alamo.
BILL WILLIAMS RIVER BASIN 381

Bill Williams Hiver at Planet, Ariz.

Location.--Lat 34°16', long. 113°59', in NE^ sec. 36, T. 11 N., R. 17 W., on left bank, at 

neaa of narrows 1 mile west of Planet and 6 miles upstream from water line of Havasu 

Lake at elevation 450 ft above mean sea level.

Drainage area.--5,140 sq mi, approximately.

Records available. October 1910 to December 1912 (gage heights only), January 1913 to 

Decemoer iyit>, October 1928 to September 1946 (discontinued). Prior to October 1943, 

published as Williams River at Planet.

Gage. Water-stage recorder since Nov. 13, 1928. Datum of gage is 556.33 ft above mean sea 

revel, datum of 1929. Prior to Nov. 12, 1928, staff gages at same site and approximately 

same datum (exactly same datum since Oct. 1, 1928).

Extremes. 1928-45: Maximum discharge, 92,500 efs Feb. 7, 1937 (gage height, 13.1 ft), 

1'rom ratine; curve extended above 51,000 cfs on basis of velocity-area study; minimum, 

7 cfs Sept. 30, Oct. 1, 1934.

Higher known floods and estimated discharges occurred as follows: 125,000 cfs Feb. 

16, 1927; 175,000 cfs about Jan. 19, 1916; 200,000 cfs about Feb. 21, 1891.

Revisions.--The figures of maximum discharge for the water years 1929-31 have been 

revised as snown in the following table. They supersede figures published in watersupply papers listed.

Water-Supply 

Paper

689. ........

704. ........

719.. .......

Water 

year

1928-29

1929-30

1930-31

Date

Aug. 5

Gage height 

Tfeet)

11.15

12.3

Discharge 

(cubic feet 

per second)

25,000

64,000

80,000

Remarks. S;veral small .iiveisionc for irrigation above station. No regulation or storage 

aoove station.

Revisions. Revised figures of discharge for water years 1929-31, 1939, are given herewith. 

They supersede figures published in Water-Supply Papers 689, 704, 719, 879, 1049.

Day 

(water year)

1928-29 

Sept. 2..... 

4. .... 

5.....

1929-30 

Sept. 8..... 

9.....

Month

Water year 1928-29.....

Water year 1929-30.....

Water year 1930-31 .....

Water year 1938-39..... 

Calendar year 1939 .....

Discharge 

(cubic feet 

per second)

1,680 

5,670 

1,990

15,100 

1,390

Cf s-days

:. 1,293

18,596

17,101 

26,657

36,584 

59,110

109,673 

115,673 

116,565

Day 

( water year)

1930-31 

Aug . 5 ......

1938-39 

Sept. 25.. ..

Maximum

5,670 

5,670

15,100 

15,100

16,600 

16,600

31,500 

31,500 

31,500

Discharge 

(cubic feet 

per second)

16,600 

4,120

Minimum

17

12

10 

10

33

10

13

11 

11

Mean

376 

60.9

570 

 73.0

1,180 

162

3,656 

317 

319

Acre-feet

22,400 

36,880

33,920 

52,880

72,560 

117^,200

217,500 

229,400 

231,200
382 COLORADO RIVER MAIN STEM

Havasu Lake near Parker Dam, Ariz.-Calif.

Location.--Lat 34°19', long. 114°09', in SW£ sec. 28, T. 3 N., R. 27 E. San Bernardino

 meridian at intake pumping plant for Colorado River aqueduct of Metropolitan Water 

District of Southern California, 1.8 miles upstream from Parker Dam on Colorado River, 

which is 156 miles downstream from Hoover Dam.

Drainage area. 178,800 sq mi, approximately, at Parker Dam, 

Records available.--July 1938 to September 1951.

Gage. Water-stage recorder. Datum of gage is 400.54 ft above mean sea level, datum of 

T929. Gage readings have been reduced to elevations above mean sea level.

Extremes.--Maximum contents during year, 686,800 acre-ft Nov. 17 (elevation, 450.49 ft); 

minimum, 588,800 acre-ft Oct. 1 (elevation, 446.19 ft).

1938-51: Maximum contents, 693,000 acre-ft (by temporary use of flashboards) Apr. 

18, 1943 (elevitlon, 450.76 ft); minimum, 71,400 acre-ft June 25, 1942 (elevation, 

412.09 ft) .

Diversions. Water is pumped to the Colorado River aqueduct of the Metropolitan Water 

District of Southern California at intake pumping plant. Diversion first started Jan. 

7, 1939. Record shown below is that of total diversion measured by venturi meters. 

During this year 1,065 acre-ft of cooling water which is included in the record of diversions was returned to the lake at the pumping plant. Percolation from Gene and 

Copper Basin Reservoirs was measured in 4 washes between pumping plant and Copper Basir 

Wash by means of weirs, each about a mile from the Colorado River, and totalled 5,250 

acre-ft during the water year.

Remarks.--Lake is formed by concrete-arch dam; dam was completed and storage began July 1,

 T338. Usable capacity, 688,000 acre-ft (neglecting slope in lake), between elevation 

400.54 ft (sill of regulating gates) and 450.54 ft (top of regulating gates) above mean 

sea level. Dead storage, 28,600 acre-ft below elevation 400.54 ft. About 0.07 ft fall 

indicated between Parker Dam and gage under normal operating conditions. Draw-down 

below elevation 440.54 ft (contents, 472,000 acre-ft) not legally permissible except by 

consent of the Metropolitan Water District of Southern California or in an emergency 

affecting the safety of the dam. Lake is used for flood control, power development, 

re-regulation of river for irrigation demand, and as a basin from which water is pumped 

by Metropolitan Water District of Southern California to Colorado River aqueduct. 

Figures given herein represent usable contents.

Cooperation.--Record of diversion to Colorado River aqueduct and percolation and direct

 return riows, furnished by Metropolitan Water District of Southern California.

Elevation at 12 p.m., in feet, water year October 1948 to September 1949

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

446 . 34

446.39

446.49

446.27

446.27

446 . 30

446.40

446.54

446 . 71

446.36

446 . 97

447.04

447 . 15

447.38

447.69

447.70

447.90

448.11

448.29

448.44

448.57

448.65

448.67

448.67

448.70

448.73

448.67

448.53

448.49

448.36

448.44

Nov.

448.37

448.24

448.30

448.46

448.63

448.84

448.93

448.80

448 . 96

449. 06.

449.43

449.83

449.93

450.16

450.33

450.36

450.39

450.24

450.05

449.86

449.69

449.46

449.22

448.99

448.74

448.42

448.08

447.81

447.50

447.31

-

Dec.

447.30

447.40

447.52

447.66

447.73

447.70

447.67

447.66

447.66

447.66

447 . 64

447.63

447 . 64

447.57

447.49

447.56

447.55

447.55

447.55

447.55

447.58

447 . 60

447.66

447.74

447.75

447.74

447.71

447.52

447.31

447.33

447.37

Jan.

447 . 36

447.23

447.22

447.22

447.31

447.38

447.50

447.62

447.71

447.71

447.66

447.72

447.72

447.71

447.66

447.59

447.51

447.42

447.40

447.40

447.36

447.38

447.39

447.39

447.38

447.40

447.39

447.40

447.43

447.61

447.54

Feb.

447.50

447.50

447.53

447 . 55

447 . 59

447.61

447.62

447.63

447.65

447.69

447.69

447.69

447.64

447.62

447.55

447.60

447.25

447.44

447.43

447.44

447.49

447 . 50

447.51

447.56

447.61

447.61

447.64

447.71

-

-

-

Mar.

447.69

447.78

447.77

447.79

447.78

447.82

447.85

447.88

447.92

447.94

448.03

448.00

448.01

448.01

447.97

447.87

447.72

447.68

447.62

447.60

447.59

447.62

447.53

447.42

447.21

447.07

447.00

446.88

446.83

446.81

446.90

Apr.

446.87

446.91

446.88

446 . 97

447.18

447.46

447.66

447.83

447.91

448.04

448.09

448.22

448.44

448.57

448.82

448.95

449.07

449.16

449.22

449 . 24

449 . 24

449.30

449.26

449.18

449.29

449.41

449.47

449.46

449.48

449.47

-

Bay

449.44

449.50

449.58

449.68

449.75

449.81

449.80

449.79

449.87

449.94

449.97

450.03

449.79

449.79

449.57

449.55

449.55

449.47

449.42

449.33

449.24

449.04

449 . 04

449.04

448.98

448.96

449.06

448.96

448.74

448.78

448.99

June

449.07

449.14

449.28

449.09

448.91

448.89

449.06

449.16

449.23

449.20

449 . 00

448.75

448.71

448 . 84

448.86

448.91

448.94

448.74

448.55

448.66

448.81

448.69

448.60

448.49

448.55

449. OS

449.60

450.05

450.05

450.05

-

July

449 . 86

449.67

449.63

449.69

449.78

449.70

449.52

449.30

448.98

448.94

449.02

449.25

449 . 34

449.46

449.46

449.35

449 . 34

449.46

449.64

449.71

449.84

449.84

449.66

449.67

449 . 74

450.01

450.10

450.02

449.67

449 . 20

449.03

Aug.

448.97

449.19

449.43

449.49

449.39

449.24

449.19

449.20

449.22

449.20

449.15

449.12

449.11

449.14

449.22

449.26

449.24

449 . 14

449.15

449.21

449.16

449.07

449.04

449.02

448.96

448.88

448.65

448.01

448.08

448.82

448.44

Sept.

448.13

448 . 00

447.76

447.77

447.92

447.92

447.94

447.87

447 . 91

447.92

447.86

447.82

447 . 92

447.90

447.87

447 . 90

447.85

447 . 80

447.80

447.78

447.78

447.70

447.59

447.54

447 . 10

446.87

446.76

446 . 73

446.67

446 . 70

-

Note. Elevations are mean sea level, datum of 1929.
COLORADO RIVER MAIN STEM 383

Contents at 12 p.m., in acre-feet, of Havaau Lake near Parker Dam, Ariz.-Calif., 

water year October 195CT to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

592,100

593,200

595,400

590,800

590,600

591,200

593,400

596,500

600,200

603,500

606,000

607,500

609,900

615,000

622,000

622,200

626,600

631,600

635,600

639,200

642,200

644,000

644,500

644,500

645,200

645,900

644,500

641,300

640,400

637,400

639,200

Nov.

637,600

634,600

636,000

639,700

643,700

648,400

650,500

647,500

651,200

653,500

662,000

671,200

673,500

676,900

663,000

663,700

684,400

680,600

676,200

671,900

666,000

662,700

657,100

651,900

646,100

638,700

630,900

624,700

617,600

613,400

Dec.

613,200

615,400

616,100

621,300

622,900

622,200

621,500

621,300

621,300

621,300

620,800

620,600

620,600

619,200

617,400

619,000

616,700

616,700

616,700

616,700

619,500

619,900

621,700

623,100

623,300

623,100

622,400

616,100

613,400

613,900

614,800

Jan.

614,500

611,700

611,500

611,500

613,400

615,000

617,600

620,300

622,400

622,400

621,300

622,600

622,600

622,400

621,300

619,700

617,600

615,900

615,400

615,400

614,500

615,000

615,200

615,100

615,000

615,400

615,100

615,400

616,100

620,100

618,500

Feb.

617,600

617,600

616,300

618,700

619,700

620,100

620,300

620,600

621,000

622,000

622,000

622,000

621,600

620,300

616,700

619,900

612,100

616,300

616,100

616,300

617,400

617,600

617,600

619,000

620,100

620,100

620,600

622,400

_

_

-

Mar.

622,000

624,000

623,600

624,300

624,000

624,900

625,600

626,600

627,200

627,700

629,600

629,100

629,300

629,300

626,400

626,100

622,600

621,700

620,300

619,900

619,700

620,300

616,300

615,900

611,700

608,200

606,600

604,000

602,900

602,400

604,400

Apr.

603,600

604,600

604,000

606,000

610,600

616,700

621,300

625,200

627,000

630,000

631,200

634,100

639,200

642,200

647,900

650,900

653,700

655,600

657,100

657,600

657,600

659,000

658, 10i3

656,200

656,800

661,500

662,900

662,700

663,100

662,900

-

May

662,200

663,600

665,400

667,700

669,300

670,700

670,500

670,300

672,100

673,700

674,400

675,600

670,300

670,300

665,200

664,700

664,700

662,900

661,700

659,700

657,600

653,000

653,000

653,000

651,600

651,200

653,500

651,200

646,100

647,000

651,600

 

June

653,700

655,300

656,500

654,200

650,000

649,600

653,500

655,600

657,400

656,700

652,100

646,300

645,400

648,400

646,900

650,000

650,700

646,100

641,700

644,300

647,700

645,000

642,900

640,400

641,700

654,200

665,900

676,200

676,200

676,200

-

July

671,900

667,500

666,600

666,000

670,000

666,200

664,000

659,000

651,600

650,700

652,500

657,600

659,900

662,700

662,700

660,100

659,900

662,700

666,600

666,400

671,400

671,400

667,300

667,500

669,100

675,300

677,400

675,500

667,500

656,700

652,600

Aug.

651,400

656,500

662,000

663,400

661,000

657,600

656,400

656,700

657,100

656,700

655,500

654,600

654,600

655,300

657,100

658,100

657,600

655,300

655,500

656,900

655,600

653,700

653,000

652,500

651,200

649,300

644,000

629,300

630,900

647,900

639,200

Sept.

632,100

629,100

623,600

623,800

627,200

627,200

627,700

626,100

627,000

627,200

625,900

624,900

627,200

626,600

626,100

626,800

625,600

624,500

624,500

624,000

624,000

622,200

619,700

616,500

606,600

603,800

601,400

600,700

599,400

600,000

-

Monthly elevation, contents, and diversions, water year October 1950 to September 1951

Date

Calendar year 1950.......

May........................

Water year 1950-51. ......

Elevation 

(feet)t

-

Havasu Lake

Contents 

(acre-feet) t

-

Change in contents 

during month 

(acre-feet)

-52,900

'

+11.200

Diversions to

Colorado River 

aqueduct 

(acre-feet)

179,426

210.315

t Elevations and contents at 12 p.m. on last day of month.
384 COLORADO RIVER MAIN STEM

Colorado River below Parker Dam, Ariz.-Calif.

Location. Lat 34°15'30", long. 114°09'10", in NE^SWi sec. 16, T. 2 N., R. 27 E. San

 Bernardino meridian, on right bank 3.9 miles (revised) downstream from Parker Dam, 10.4 

miles upstream from Headgate Rock Dam, and 11 miles northeast of Parker, Ariz.

Drainage area.--178,800 sq mi, approximately.

Records available.--February to September 1934 (gage heights and fragmentary discharge records}, Uctocer 1934 to September 1951.

Gage..-Water-stage recorder. Datum of gage is 346.16 ft above mean sea level, datum of T929.

Average discharge.--17 years (1934-51), 13,960 cfs (unadjusted); 14,010 cfs (adjusted to

 include storage in Havasu Lake, but not in Lake Mead and Lake Mohave).

Extremes. Maximum discharge during year, 21,100 cfs Aug. 29 (gage height, 22.07 ft); mini-

 mum, 2,880 cfs Apr. 16; minimum daily, 8,190 cfs Jan. 7.

1935-51: Maximum discharge, 42,400 cfs Feb. 8, 1937; no flow at Parker Dam parts of 

several days in 1942 when gates in dam were closed; minimum daily, 1,440 cfs Feb. 15, 

1935.

An unregulated discharge of probably less than 1,350 cfs occurred Aug. 18, 1934 (lowest unregulated discharge since 1917 and probably since a much earlier date).

Remarks.--Records excellent. Discharge measurements generally made 3 times a month. Many

 diversions above station. Flow regulated at Hoover Dam since Feb. 1, 1935, at Lake 

Mohave since Jan. 17, 1950, and at Parker Dam since July 1, 1938. For record of diversion to Colorado River aqueduct and return flows see record for Havasu Lake near Parker 

Dam.

Rating tables, water year 1950-51 (gage height. In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Feb. 14 to Mar. 18 and after June 25)

Oct. 1 to Jan. 8, 

June 26 to Sept. 30

18.2 7,820

19.0 10,890

20.0 14,330

21.0 17,730

22.0 21,130

Jan. 9 to June 25

18.2 7,970

19.0 11,520

20.0 15,220

21.0 18,920

22.0 22,620

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27 

28

29

30

31

Total

Mean

Ac- ft

Oct.

10,900

12,600

11,100

12,000 

11,200

11,700

11,300

11,000

10,500

10,900

10,900

11,900

11,200

9,820

9,530

12,700

10,900

10,500

10,400

10,000

9,810

9,940

10,100

10,100

9,610

9,600 

9,640 

9,270

9,250

10,800

9,120

328,290

10,590

651,200

Nov.

9,580

9,320

8,670

8.230 

9,000

8,580

8,660

9,140

8,790

8,750

9,040

8,580

11.100

9,650

8,790

9,720

9,120

9,270

9,110

9,210

9,220

8,940

9,220

9,030

9,030

8,980 

9,130 

8,940

9,600

8,690

-

273,090

9,103

54,1,700

Dec.

9,200

9,140

8,870

9,170 

8,920

9,320

9,280

9,250

9,030

9,050

9,180

8,920

9,020

9,090

9,220

8,940

9,310

8,850

8,960

9,180

9,000

9.420

8,880

8,730

8,910

9,190 

8,940 

8,900

9,420

8,690

8,940

280,920

9,062

557,200

Jan.

8,720

9.540

9,120

9,280 

8,370

8,480

8.190

9,110

8,930

9,330

9,460

9,150

9,220

8,890

9,000

9,010

8,830

9,230

9,090

8,950

9,080

8,880

9,120

8,880

8,870

8,750 

8,850 

9,000

8,920

8,500

8,700

277,450

8,950

550,300

Feb.

8,470

8,870

8,890

9,020 

8,790

8,760

8,840

8.290

8,910

8,700

8,670

8,760

8,960

8,750

9,520

8,980

12.000

9,200

8,960

8,910

9,010

9,200

9,000

8,980

9,040

9,230 

9,060 

8,720

_

-

252,490

9,018

Mar.

9,090

9,220

9,080

8.920 

9,686

9,410

9,650

9,430

10,100

10,000

9,840

10,300

10,500

10,100

10,500

12,100

11,800

12,600

12,700

13,100

13,100

12,600

13,700

14,700

14,900

15,000 

15.800 

15,50(5

14,400

15,000

15,000

367,820

11,870

500,800 729,600

Apr.

15.800

15,366

15,700

15,300 

14,800

14,300

15,000

14,500

15,500

15,200

15,200

14,000

14,000

12,800

12,600

11,600

11,500

11,700

10,600

10,600

10,700

10,600

11,200

11,400

10.500

10,500 

10,500 

11,400

11,500

11,200

-

385,500

12,850

764,600

May

10,400

10,600

9,650

9,630 

10,200

10,400

10,900

10,500

9.160

10,000

10,900

11,600

11,300

12,100

11,600

10,300

10,100

11,100

10,900

11,800

10,800

11,500

10,900

11,800

12.200

11,800 

11,900 

11,700

11,700

11,600

11,400

340,440

10,980

675,300

June

12,000

12,000

11,700

12,800 

12,900

13,100

13,000

13,200

13,400

13,100

13,700

13,500

13,200

13,200

15,000

15,400

14,900

15,300

14,900

15,700

14,900

18,200

17.500

17,300

16,200

16,600 

15,100 

14,300

16,500

15,900

434,500

14,480

861,800

July

15,400

15,000

15,400

14,800 

15,400

16,200

15,900

15,700

15,200

15,600

15,300

14,600

15,300

15,200

14,800

15,100

15,400

15,100

14,500

15,400

15,000

15,100

15,200

15,400

15,400

14.400 

16, S66 

16,000

16,400

16,166

15,900

476,400

15,370

944,900

Aug.

15,200

15,100

14,100

14,900 

16,000

14,800

14,800

14,700

14,700

16,000

15,900

15,700

15,400

14,900

1 i,900

15,700

15,100

16,100

16,100

15,600

15,700

15,900

15,300

15,000

15,500

15,700 

15,900 

20.300

15,900

13,400

11,900

476,200

15,360

944,500

Sept.

12,300

13,100

14,500

12,500 

11,300

11,700

12,400

13,200

12,200

12,100

12,300

11,600

10,800

10,700

11,100

10,900

11,100

11,300

10,700

10,700

10,900

11,100

11,100

10,800

14,400

14.700 

14,566 

14,200

13,600

12,800

364,600

12,150

723,200

Calendar year 1950: Max 21,700 Mln 8,230 Mean 14,460 Ac-ft 10,470,000

Water year 1950-51: Max 20,300 Mln 8,190 Mean 11,660 Ac-ft 8,445,000
COLORADO RIVER MAIN STEM 

DIVERSIONS BETWEEN PARKER DAM AND IMPERIAL DAM

385

Diversion for Colorado Riv3r Indian Reservation near Parker, Ariz .

Location. Diversion for Colorado River Indian Reservation is made at the Arizona end of 

 Headgate ROCK Dam, lat 34°10'05", long. il4°16'30", in NEij sec. 31, T. 10 N. , R. 19 W. 

Gila and Salt River meridian, on Colorado River Indian Reservation, 1 ? miles northeast 

of Parker and 14-|- miles downstream from Parker Dam. The diversion is measured at check 

gatet structure about 3j miles downstream from intake.

cords available.--January 1915 to December 1936 (cal 

eptemoer ±951 (monthly discharge).

endar year discharge), January 1937

Remarks. Figures given herein show water diverted to project. Discharge ^j.ov,uui 3 - is j.o the *.i- flow + +^.. 

past check gate structure combined with the flow of two laterals which divert at this 

Flow over check sates is computed by weir rule and in laterals_by pressure

total of 32,645 irrigable acres on east sid

Cooperation.--Records furnished by Office of Indian Affairs.

Monthly diversion, water year October 1950 to September 1951

Month

July. ..........................

September. .....................

Water year 1950-51. ..........

Cfsdays

7,895 

7,432 

5,312

105,732

3,512 

4,514 

9,202 

11,781 

10,515 

16,047 

19,151 

14,454 

10,904

120,709

Cubic feet per second

Maximum

470 

330 

202

665

260 

337 

420

470 

523 

629 

727 

695 

536

727

Minimum

0 

214 

80

0

25 

0 

212 

240 

0 

200 

497 

0 

0

0

Mean

255 

247 

171

290

113 

161 

297 

393 

339 

535 

618 

466 

363

331

Diversions 

acre-feet

15,660 

14,720 

10,540

209,700

6,970 

8,950 

18,250 

23,370 

20,860 

31,830 

37,980 

28,670 

21,630

239,400

Water returned 

to river by 

drainage canal 

(acre-feet)

4,420 

4,640 

5,630

51,370

4.980 

5,080 

5,880 

5,730 

7,590 

7,970 

7,430 

7,790 

7,510

74,650
186 COLORADO RIVER MAIN STEM

DIVERSIONS BETWEEN PARKER DAM AND IMPERIAL DAM

Palo Verde Canal near Blythe , Calif.

Location. Lat 33°44'05", long. 114°30'45", in SE^SW^ sec. 18, T. 55., R. 24 E., San

 Bernardino merdian, 300 ft downstream from canal intake structure, 10 miles northeast

of Blythe, and 43 miles downstream from Headgate Roflk Dam. 

Records available .--January 1922 to December 1923, January 1925 to September 1951 (monthly

aisenargei^ only prior to October 1950). 

Gage and determination of discharge . --Water-stage recorder at present site since Aug. 7,

 19bU. Datum of gage is yyu.t)9 ft above mean sea level, datum of 1929; 280.0 ft, Palo 

Verde Irrigation District datum; or 280.7 ft, Bureau of Reclamation datum. Prior to 

1950, discharge determined by various methods such as combined deliveries to laterals 

downstream (estimates based on gate openings) supplemented by gage heights from a waterstage recorder or staff gage and some discharge measurements. During 1950 prior to 

Aug. 7, recorders above and below gate openings used. Auxiliary water-stage recorder 

half a mile downstream.

Re marks. --Re cords for 1951 fair. Figures given herein represent flow diverted from

 Colorado River for irrigation of 62,800 acres in 1951, an increase from 44,800 in 

1946. Discharge measurements of canal diversion generally made two or three times a 

month, with additional measurements made in January and June. Since Aug. 7, 1950, 

regulatory return flow from spillway basin about 500 ft downstream has been subtracted 

from these records. There is appreciable return from six wasteways extending throughout the project and from Outfall drain which has not been subtracted. Total water 

returned to the Colorado River through the wasteways and drains, based on water inventories made in 1950 and 1951, amounted to 469 cfs January 1950, 518 cfs July 1950, 

516 cfs January 1951, and 577 cfs June 1951. Return flow through Outfall drain, as 

measured in 

table below.

, . 

sec. 11, T. 93., R. 21 E. , 1 mile south of Palo Verde, is given in

Discharge measurements of Outfall drain 

1946-51

Date

1947

Jan. 16

Feb. 20

Apr. 16

July 15

Dot. 15

1948

Feb. 11

Mar. 8

Apr. 15

July 13

22

Dot. 12

13

Dec. 15

Discharge 

(cfs)

200

t243

269

244

288

290

t345

288

245

t345

t353

309

258

Date

1949

Jan. 4

Feb. 17

17

Mar. 15

Apr. 14

May 14

June 14

17

July 15

Aug. 4

16

Sept. 14

Oct. 2

No-. 15

Dec. 21

Discharge 

(cfs)

t216

288

t318

t323

317

t338

333

t363

t343

303

t325

t249

329

t260

t329

Date

1950

Jan. 12

Feb. 7

Mar. 8

Apr. 3

6

May 2

June 3

July 4

19

Aug. 3

Sept. 6

Oct. 4

19

Nov. 2

Dec. 2

Discharge 

(cfs) -

278

329

t391

t393

386

395

320

361

314

321

t255

t301

331

t276

t334

Date

1951

Jan. 3

18

Feb. 2

Mar. 1

Apr. 9

17

May 4

June 5

28

Aug. 2

Sept. 5

Discharge 

(cfs)

t325

297

t352

t307

t416

360

t361

t441

t416

380

t350

t Furnished by Palo Verde Irrigation District.

Cooperation.--Records prior to Aug. 7, 1950, and 27 discharge measurements since then,

rurnisned by Palo Verde Irrigation District. 

Revisions.--Revised figures of monthly discharge, in cubic feet per second, for water

years 1946-48, superseding those published in Water-Supply Papers 1059, 1089, 1119,

and monthly discharge for the water years 1949-50, not previously published, are given

herein.

Month

Dec ember .............................

September. ...........................

Water year 1945-46 .................

Maximum

460

760

920

Minimum

250

100

200

550

370

330

200

Mean

476

462

381

458

348

651

702

591

582

602

538

Runoff In 

acre-feet

29,290

27,520

23,430

331,400

21,410

25,070

40,000

41,780

42,200

35,170

32,100

35,760

35,840

389,600
COLORADO RIVER MAIN STEM 387

Discharge, In cubic feet per second, of Palo Verde Canal near Blythe, Calif., 

water year October 1950 to September 1951

Day

1 

2 

3

4

5

6

7

8 

9

10

11 

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac- ft

Oct.

1,220 

1,300 

1,240

1,290

1,290

1,200

1,160

1,210 

1,260

1,260

1,200 

1,210

1,160

1,160 

1,210

1,130

1,080

1,080

1,050

1,100

1,060

1,040

1,050

1,020

1,030

1,000

1,040

1,080

1,020 

1,050

958

35,158

1,134

69,730

Nov.

1,040 

1,040 

1,080

1,160

1,050

1,080

1,090

1,050 

963

858

918 

927

1,010

865 

905

1,030

997

976

888

912

950

1,030

914

734

777

796

848

901

824 

820

28,433

948

56,400

Dec.

1,010 

9THJ 

896

993

971

950

997

924 

924

915

855 

864

874

882 

866

818

827

878

931

918

875

890

877

342

833

822

811

829

794 

756

714

27,305

881

54,160

Jan.

704 

691

691

720

785

730

665

'BBT 

736

724

731 

682

696

737 

715

757

748

769

764

738

723

749

732

728

713

751

790

74T

726 

706

699

22,527

727

44,680

Feb.

685 

659 

647

640

637

608

SZJ

607 

709

758

839 

864

884

886 

899

919

940

1,020

925

935

951

993

1,010

1,050

1,100

1,080

1,090

1,090

-

24,049

859

47,700

Mar.

1,090 

1,100 

1,110

1,120

1,130

1,140

1,130

1,130 

1,140

1,160

1,140 

1,150

1,140

1,120 

1,100

1,210

1,220

1,210

1,180

1,230

1,240

1,220

1,260

1,230

1,250

1,180

1,200

1,200

1,210 

1,210

1,210

36,360

1,173

72,120

Apr.

1,180 

1,220

1,200

642

BT55"

918

1,050

1,130 

1,110

1,100

1,140 

1,110

1,150

1,160 

1,160

1,190

1,150

1,180

1,180

1,160

1,140

1,080

1,100

1,100

1,090

1,080

1,080

1,070

1,040 

1,030

-

32,795

1,093

65,050

May

1,030 

1,070 

1,120

1,180

1,170

1,050

1,100

1,230

1,260

1,260

1,500 

1,230

1,180

1,130 

1,140

1,100

1,120

1,160

1,160

1,070

1,080

1,220

1,220

1,270

1,270

1,240

1,140

1,180

1,210

1,250

1,140

36,280

1,170

71,960

June

1,190 

1,190 

1,150

1,210

1,220

1,140

1,360

1,390 

1,340

1,320

1,320 

1,320

1,440

1,490 

1,410

1,370

1,270

1,240

1,320

1,380

1,450

1,390

1,340

1,320

1,320

1,350

1,300

1,420

1,470 

1,270

-

39,700

1,323

78,740

July

1,260 

1,260 

1,330

1,310

1,230

1,350

1,420

1,280 

1,370

1,450

1,460 

1,390

1,350

1,370 

1,350

1,300

1,310

1,300

1,250

1,240

1,290

1,290

1,330

1,400

1,420

1,310

1,300

1,220

1,120 

1,260

1,270

40,790

1,316

80,910

Aug.

1,320 

1,310 

1,300

1,350

1,310

1,360

1,400

1,420 

1,380

1,260

1,220 

1,070

1,140

1,240 

1,200

1,070

1,150

1,240

1,040

1,210

1,080

1,060

1,120

1,140

1,140

927

630

551

412 

446

335

35,829

1,091

67,100

Sept.

451 

544 

299

345

389

450

657

638 

694

717

722 

712

975

870 

948

897

944

1,000

1,090

1,100

1,080

1,040

,080

,050

,050

,060

,050

,050

1,040 

1,060

-

24,781

826

49,150

Calendar year 1950: Max 1,560 Mln 400 Mean 1,060 Ac-ft 767,700

Water year 1950-51: Max 1,490 Mln 299 Mean 1,047 Ac-ft 757,700
COLORADO RIVER MAIN STEM

Monthly discharge, in cubic feet per second, of Palo Verde Canal near 

Blythe,'Calif., 1945-50--Continued

Month

May ..............................

August ...........................

September. .......................

May..... .........................

June ........................ ....

July. ............................

September. .......................

February .........................

April. ...........................

May.... ..........................

June. ..................

July. ............................

Maximum

720

600

920

820

900

800

900

1,200

1,300

Minirnum

330

440

414

ZOO

290

450

460

750

580

640

720

500

530

290

560

410

360

290

620

500

510

0

1,010

480

Mean

638

508

485

564

623

684

877

759

SOS

812

650

726

668

705

533

411

670

943

908

152

991

732

993

Runoff in 

acre-feet

39,250

30,250

29,840

408,700

£7,690

34.610

42,030

52,190

46,680

48,120

49,950

39,940

43,190

483,700

43,360

31,730

25,290

484,800

40,220

54,010

58,990
COLORADO RIVER MAIN STEM 389

Colorado River at Imperial Dam, Ariz.-Calif.

Location.--lat 32°53'00", long. 114°27'50", at Imperial Dam. The California end of dam 

is in Wj sec. 9, T. 15 S., R. 24 E. San Bernardino meridian; the Arizona end in SW^NW-J 

sec. 30, T. 6 S., R. 21 W. Gila and Salt River meridian. The dam is 5 miles upstream 

from Laguna Dam, 15 miles northeast of Yuma, 90 miles downstream from intake of Palo 

Verde Canal, and 147 miles downstream from Parker Dam.

Records available.--July 1934 to September 1951 (monthly discharge only since October 1942). 

Prior to October 1942, published as "near Picacho, Calif." Estimates of annual discharge for the years 1903-34 published in Water-Supply Paper 918.

Gage.--Ko gage on river at this site. Discharge figures published for this site are based 

on the combined daily records of discharge obtained at gaging station on Colorado River 

at Yurna, Ail-American Canal near Imperial Dam, Gila Gravity Main Canal at Imperial Da.m, 

and North Gila Valley Canal at Laguna Dam. less that of Gila River near Dome. Drainage 

and waste return flows and channel losses between these stations and Imperial Dam have 

been neglected. Prior to October 1942, water-stage recorder at site 14j miles upstream.

Average discharge.--17 years (1934-51), 13,110 cfs.

17,700 cfs Aug. 31; minimum daily, 7,570

3, 1934;

Extremes.--Maximum daily discharge during year 

cfs Dec. 1.

1934-51: Maximum discharge, 40,800 cfs Sept. 5, 1939; minimum, 538 cfs A 

minimum daily since regulation of Hoover Dam began, 1,450 cfs Feb. 17, 1935.

Remarks.--Records show flow of Colorado River reaching Imperial Dam, which is above all 

diversions in the vicinity of Yuma. Many diversions from Colorado River and tributaries 

upstream. Flow regulated by many reservoirs, principally Lake Mead,since 1935.

Monthly discharge, in cubic feet per second, water year 

October 1950 to September 1951

Month

Calendar year 1950. ....

September. ...............

Water year 1950-51. ....

Maximum

21,800

17,500

17,700

Minimum

7,570

12,700

9,980

7,570

Mean

13,680

11,710

10,730

Run off in 

acre-feet

9,906,000

696,800

7,766,000

256684 O - 53 - :
390 GILA RIVER BASIN

Gila River near Glla, N. Mex.

Location.- -La t 33°04'05", long. 108°32'10", In SE^SWi sec. 19, T. 14 S., R. 16 W. , on left 

tank at Hooker dam site, 1 mile upstream from Mogollon Creek and 7 miles northeast of 

Glla.

Drainage area. --1,870 sq ml, approximately.

Records available. --April to December 1914 and October 1930 to September 1951 In reports 

or ideological Survey. April to December 1914 and November 1927 to December 1931 In reports of State engineer.

Gage . --Water -stage recorder. Datum of gage Is 4,655.8 feet above mean sea level (riverprofile survey), Prior to Dec. 31, 1928, at site 5 miles upstream at different datum. 

Dec. 31, 1928, to Jan. 7, 1942, on right bank 200 ft upstream at same datum.

Average discharge. --23 years (1928-51), 131 cfs.

Extremes . --Maximum discharge during year, 105 cfs Mar. 11 (gage height, 2.75 ft); minimum 

dally, 19 cfs July 9-12.

1930-51: Maximum discharge, 25,400 cfs Sept. 29, 1941 (gage height, 17.2 ft, from 

floodmark), from rating curve extended above 1,100 cfs on basis of velocity-area studies 

and logarithmic plotting; minimum dally, 19 cfs July 15, 1948 July 9-12, 1951.

Remarks . --Records good. Discharge measurements generally made three times a month. Diversions for Irrigation of about 500 acres above station.

Rating table, water year 195O-51 (gage height, in feet, 

and discharge in cubic feet per second)

2.2

2.3

2.4

2.5

2.6

2.7

2.8

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

54

54

49

52

56.

52

48

46

44

43

42

42

40

4T

42

42

43

42

42

43

44

44

44

44

44

44

44

44

43

43

44

1,400

45.2

2,780

Nov.

44

4T

44

44

44

44

44

44

44

44

44

44

46.

48

48

48

49

49

49

49

49

50

52

52

52

52

52

52

54

54

-

1,433

47.8

2,840

Dec.

54

31

54

54

54

54

-Sz 52

52

54

54

54

54

54

54

54

54

54

52

54

54

54

54

52

54

52

52

52

52

54

54

1,656

53.4

3,280

Jan.

57

61

57

56

54

54

54

54

54

54

54

57

59

57

56

56

57

57

57

56

57

57

57

57

57

57

57

57

57

61

74_

1,769

57.1

3,510

Feb.

72

66

65

65

65

65

65

63

63

63

61

61

63

66

65

63

61

63

65

66

63

61

59

63

68

66

66

65

_

_

-

1,797

64.2

3,560

Mar.

63

63

65

61

59_

59

61

61

63

72

89

96

87

83

80

78

76

74

74

72

68

66

66

65

63

68

83

98

9T

87

83

2,274

73.4

4,510

Apr.

76

74

72

72

74

72

76

80

78

76

72

72

72

72

72

72

70

715

72

80

80

78

76

74

72

72

74

76

78

87

-

2,241

74.7

4,440

May

89

m

83

80

76

72

72

74

76

78

80

76

76

74

72

70

70

68

66

66

61

59

57

57

57

56

54

52

52

50

49_

2,109

68.0

4,180

June

46

44

43

42

42

40

37

37

37

37

34

33

35

31

31

30

29

27

26

26

24

23

22

22

23

24

23

22

21

21

-

930

31.0

1,840

July

21

21

20

20

20

21

22

21

1-9

1?

19

19

21

24

26

26

26

22

20

26

29

30

31

31

43_

40

37

34

37

36

34

815

26.3

1,620

Aug.

42

43

50

52

52

49

49

43

37

34

31

29

29

29

29

27

27

29

27

24

26

30

31

33

34

38

48

59

63

55

63

1,216

39.2

2,410

Sept.

63

56

49

44

43

40

38

38

42

38

36

36

34

31

56

52

42

36

33

31

29

27

27

27

27

27

26

27

27

27

-

1,109

37.0

2,200

Calendar year 1950: Max 260 Hln 24 Mean 62.1 Ac-ft 44,930

Water year 1950-51: Max 98 Hln 19 Mean 51.4 Ac-ft 37,170

Peak discharge (base, 600 efs). No peak above base
GILA RIVER BASIN 391

Gila River near Cliff, N. Mex.

Location. La t 32°56'20", long. 108°36'20", in S? sec. 4, T. 16 S., R. 17 W., on downstream 

end of pier nearest left end of bridge on U. S. Highway 260, If miles downstream from 

Bear Creek, If miles south of Cliff, 2? miles southwest of Gila, and 6| miles upstream 

from Mangas Creek.

Drainage area.--2,490 sq mi, approximately.

Hecoras available. January 1942 to October 1951 (discontinued). September 1904 to Decemoer lauv (iauq, gage heights only; 1907 gage heights and discharge measurements) at site 

SY miles downstream, records not equivalent.

Gage.--Water-stage recorder. Datum of gage is 4,454.5 ft above mean sea level, datum of

Average discharge.--9 years, 119 cfs.

Extremes.- -Maximum discharge during period October 1950 to October 1951, 684 cfs Oct. 4 

(gage height, 3.62 ft); minimum dally, 7.2 cfs July 11.

1942-51: Maximum discharge, 17,200 cfs Jan. 14, 1949 (gage height, 12.6 ft), by 

slope-area method; minimum daily, 5.8 cfs July 2,7, 1946, Aug. 8, 1947. 

Maximum stage known, 14.0 ft Sept. 29, 1941.

Revisions.--Revised figures of maximum discharge for some water years are given in 

the following table. They supersede those published in the water-supply papers 

indicated.

Water-Supply 

Paper

959. .......

979........

1039........

Water 

year

*1942

1943

1945

Date

Sept. 12

Aug. 1

Gage height 

(feet)

7 9^

4 50

4.77

Discharge 

(cfs)

4,600

1,800

1.940

* Period January to September.

Remarks.--Records good. Discharge measurements generally made about once a week. DiversTons for irrigation of about 5,700 acres above station. 

Revisions.--Revised figures of peak discharge for the water years 1942, 1944-45, superseaing those published in water-supply papers 959, 1009, and 1039, are given herewith: 

1941-42: Sept. 4 (7 p.m.) 2,500 cfs; Sept. 12 (7 p.m.) 4,600 cfs.

1943-44: July 8 (7:30 p.m.) 2,000 cfs.

1944-45: Aug. 1 (5 p.m.) 1,940 cfs; Aug. 16 (8 p.m.) 1,860 cfs.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

65

94

~n121

65

56

50

54

57

50

40

37

27

35

38

35

35

31

32

31

40

40

35

31

33

34

31

35

35

37

1,448

46.7

2,870

Nov.

38

38

39

34

35

37

38

41

45

54

62

69

54

60

56

56

58

56

56

58

67

65

62

60

51

51

50

56

60

54

1,574

52.5

3,120

Dec.

56

54

44

52

46

46

46

48

51

52

56

51

52

48

50

50

50

48

44

48

44

43

48

58

T55

51

46

45

40

43

37_

1,505

48.5

2,990

Jan.

41

IE

50

50

58

57

64

62

51

45

46

52

67

58

52

50

52

43

51

54

54

48

50

56

46

44

51

48

48

51

M

1,627

52.5

3,230

Feb.

86

W

76

74

65

67

74

73

73

69

62

SZ

67

76

71

69

67

64

67

67

67

65

67

71

76

76

73

73

-

_

-

1,977

70.6

3,920

Mar.

71

71

74

74

69

65

67

67

58

67

105

111

T5

86

80

80

78

80

73

69

65

64

57

48

44

44

60

88

88

82

76

2,259

72.9

4,480

Apr.

74

57

50

46

56

52

48

56

62

46

50

50

38

39

44

39

26

30

26

40

57

58

52

52

48

39

32

38

50

69

1,424

47.5

2,820

May

67

SZ

41

40

44

46

45

44

31

33

41

54

48

56

60

64

64

64

57

48

38

41

52

48

43

34

37

25

24

20

24

1,395

45.0

2,770

June

23

25

31

27

32

29

26

23

24

24

21

17

18

17

16

16

16

16

14

12

12

12

12

11

10

10

9.6

9.2

9TS

9.2

531.6

17.7

1,050

July

10

10

10

11

11

12

10

8.8

8.0

7.6

7.2 r^

7.6

8.0

9.6

8.4

8.4

8.4

9.2

10

10

11

13

43

T3

9.6

14

14

12

12

12

346.4

11.2

687

Aug.

12

12

17

14

13

14

17

14

13

13

14

14

14

12

10

9.6

12

10

2T~8.4

23

11

9.6

20

21

18

67

35

38

32

25

566.6

18.3

1,120

Sept.

23

20

20

20

17

15

15

16

19

17

14

16

15

15

19

26

?T

18

16

16

16

15

14

14

13

13

14

13

13

14

-

497

16.6

986

Calendar year 1950: Max 442 Min n Mean 59.0 Ac-ft 42,750

Water year 1950-51 : Max 121 Min 7.2 Mean 41.5 Ae-ft 30,000

Peak discharge (base, 2,500 efs). No peak above base.

Discharge, in cubic feet per second, October 1951

Date

Oct. 1

2

3

4

5

Discharge

13

13

13

13

13

Date

Oct. 6

7

8

9

10

Discharge

13

13

13

14

14
392 GILA RIVER BASIN

Gila River near Red Rock, N. Mex.

Location. Lat 32°43'30", long. 108°40'30", in W? sec. 23, T. 18 S., R. 18 W., on left bank 

a quarter mile upstream from lower end of a box canyon, 4 miles northeast of Red Rook, 

and 14 miles downstream from Mangas Creek.

Drainage area.--2,860 sq mi, approximately.

Kecords available.--September 1904 to December 1914 (gage heights, fragmentary, and discnarge measurements only September 1904 to May 1905, January 1907 to October 1908, January 1911 to July 1912, published as "near Cliff" 1904-7) and October 1930 to September 

1951 in reports of Geological Survey. November 1908 to December 1910 and August 1912 

to December 1931 in reports of State engineer.

Gage. tfater-stage recorder. Altitude of gage is 4,080 ft (from river-profile map). Prior

 to Dec. 31, 1907, staff gage 13? miles upstream at different datum. May 14, 1908, to

July 16, 1909, staff gage a quarter mile downstream at different datum. 

Average discharge.--33 years (1909-10, 1912-14, 1918-24, 1927-51), 178 cfs. 

Extremes.--MaxTImlm discharge during year, 454 cfs Oct. 4 (gage height, 6.82 ft); minimum

 daily, 4.1 cfs June 29-30, Aug. 12.

1905-51: Maximum discharge, 40,000 cfs Sept. 29, 1941 (gage height, 31 ft, from 

floodmark^, computed on basis of known peak flow for station below Blue Creek; minimum 

daily, 3 cfs Aug. 2-7, 1947.

Revisions.--Revised figures of maximum discharge for some water years are given in 

the renewing table. They supersede those published in the water-supply papers 

indicated.

Water-Supply 

Paper

734. .......

809. .......

1009........

1039........

1059.. ......

1089. .......

Water 

year

1931

1945

1946

1947

Date

Sept. 21

16

Sept. 4

AUK. 22

Gage height 

(feet)

11.46

10.20

8.3

10.97

11.30

Discharge 

(cubic feet 

per second)

7,800

1,810

5,500

6.100

Remarks. Records good. Discharge measurements generally made three or four times a month. 

Diversions for irrigation of about 5,000 acres above the station.

Revisions.--Revised figures of discharge for periods in water years 1906, 1911-14, 1931, 

iacJb-37, 1939, 1941, 1944, 1947 are given herewith. They supersede those published in 

previous water-supply papers.

Day 

(water year)

1905-6

Nov. 26.....

27.... .

28.. ...

29.. ...

30. ....

Dec. 1.....

2. ....

3. ....

4. ....

5. ....

6. ....

7. ....

8.....

9. ....

10.....

11. ....

12.....

13.....

14. ....

15. ....

16. ....

17.... .

18.. ...

19. ....

20... ..

21.....

22.. ...

23.... .

24.. ...

25.....

26.....

27:....

28.....

29.. ...

30. ....

31.....

1910-11

Nov. 22. ....

23.....

24.....

25.....

26. ....

27.....

28.....

29.. ...

30. ....

Dec. 1.....

2. ....

3..-.. .

4. ....

5. ....

6. ....

7.....

Discharge 

(cfs)

1,100

10,000

5,700

3,400

2,100

1,450

1,070

780

680

550

480

430

370

330

320

320

320

300

290

290

275

260

260

360

295

280

265

240

210

190

190

190

200

205

205

205

73

73

73

73

73

73

73

73

73

73

67

67

67

67

67

67

Day 

(water year)

1910-11

Dec. 8.....

9. ....

10. ....

11. ....

12.....

13....

14.... .

15. ....

16.. ...

17 .....

18.....

19. ....

20. ....

21.....

22.....

23. ....

24. ....

25. ....

26.....

27. ....

28.... .

29.. ...

30. ....

31.....

1911-12

lug. 10-15..

16-20..

21-27. .

1912-13

Oct. 1-5 ..

6-10..

11-14. .

Mar . 2 .....

3. ....

4. ....

5.. ...

6. ....

7. ....

Aug. 13-24..

1913-14

Oct. 3.....

4. ....

5. ....

6. ....

7.....

8. ....

9. ....

10. ....

11. ....

12.. ...

13.....

Discharge 

(cfs)

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

67

140

170

140

90

110

100

90

90

90

100

130

180

80

382

290

253

201

158

146

137

128

120

112

110

Day 

(water year)

1913-14

Oct. 14. ....

15. ....

16. ....

17. ....

18.....

19.....

20 .....

21. ....

22... ..

23. ....

24. ....

25. ....

26. ....

27.....

28.....

29.....

30.....

31.....

Nov. 1.....

2.....

3.... .

4... ..

5.....

6. ....

7.. ...

8. ....

9.....

10.....

11.....

12.....

1914-15

Nov . 11 .....

12.....

13 .....

14.....

15.....

16. ....

17. ....

18.....

19. ....

20 .....

21.....

22.. ...

23.....

24... ..

25.....

26. ....

27.. ...

28. ....

29.....

30.....

Dec. 1.....

2.....

Discharge 

(cfs)

106

106

102

102

100

102

100

102

100

100

99

99

98

98

96

96

95

95

93

93

92

91

91

88

85

85

85

85

85

85

700

1,200

811

600

452

369

335

308

288

266

246

233

222

212

205

198

187

183

176

174

174

210

Day 

(water year)

1914-15

Dec. 3....

4. ...

5. ...

6. ...

7. ...

8.. ..

9... .

10....

11....

12....

1930-31

July 3 ....

Aug. 6....

1 ....

8. ...

9. ...

1935-36

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....

Sept. 11....

12....

21....

1936-37

Feb. 8....

16....

Discharge 

(cfs)

215

198

181

174

168

163

155

149

147

143

1,020

450

350

300

1,000

220

235

245

238

252

265

262

273

258

240

208

205

202

198

215

205

189

171

161

161

161

155

143

135

135

140

140

135

700

379

768

2,610

5,100
GILA RIVER BASIN 393

Revised figures of discharge of Glla River near Red Rock, N. Mex. Continued

Day 

(water year)

1936-37

Feb. 17.....

Mar . 17 .....

18.....

19.....

1938-39

Mar. 26.. ...

27... ..

28.....

29.....

30 .....

31.....

Discharge 

(cfs)

6,660

4,090

4,160

2,400

481

409

365

330

312

292

Day 

(water year)

1938-39

Apr . 1 .....

2.....

3.....

4... ..

5.....

6.... .

7.....

8. ....

9.... .

10.... .

11.....

12.....

Discharge 

(cfs)

286

280

280

280

289

306

309

280

268

250

227

204

Day 

(water year)

1938-39

Apr . 13 .....

14.....

15., ...

16.....

17 .....

18., ...

19.....

20.....

1940-41

Sept. 29.....

30.,...

Discharge 

(cfs)

204

164

157

162

162

127

129

133

25,000

11,000

Day 

(water year)

1943-44

Aug. 18.....

19.....

20... ..

1946-47

Aug. 22.....

24.....

30.....

31.....

Discharge 

(cfs)

1,930

2,440

870

740

961

794

800

Aug. 22 (3 a.m.) 1,240 cfs.

1946-47:. June 19 (12:40 a.m.) 1,050 cfs; Aug. 22 (4:40 p.m.) 6,100 ofs; Aug. 24 (4:35 a.m.)

4,040 cfs; Aug. 30 (4:50 p.m.) 1,640 cfs.

Month

Water year 1905-06 .........

Water year 1912-13. ........

Water year 1913-14 .........

July 1931....................

April 1936 ...................

September ....................

Calendar year 1937. ........

March 1939 ...................

September 1941 ...............

Cf s-days

148,384

2,215

4,236

48,054

96,281

8,565

142,189

3,893

79,246

6,480

4,945

106,822

106,696

9,202

51,603.8

40, 640

230,248

10,639

25,896

Maximum

10,000

87

-

655

1,200

-

1,020

1,070

273

768

6,660

6,660

802

6,190

25,000

25,000

961

Minimum

32

60

~

18

55

31

15

171

80

25

25

25

25

101 

105

6.0

6.0

70 

36

36

32

15

3

Mean

407

73.8

137

132

264

286

390

126

217

216

165

128

1,028

293

292

297 

190

112

141

1,355 

592

631

343

105

111

70.9

Runoff in 

acre-feet

294,300

4,390

8,4OO

95,310

112,200

191,000

16,990

282,000

7,720

157,200

12,850 

6,420

9,810

93,480

93,070

63,210

211,900

211,600

18,250 

11,300

102,400

80,610 

428,400

456,700

21,100

76,030

80,880

59,140

51,370
394 GILA RIVER BASIN

Discharge, In cubic feet per second, of Gila. River ne^r Red Rock, N. Hex., 1950-51

Day

1

£

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

£1

22

23

24

25

£6

£7

£8

29

30

31

Total

Mean

Ac- ft

Oct.

100

73

80

134

144

77

73

67

65

65

63

56

48

35

37

40

33

30

£5

25

27

33

45

44

40

31

27

31

37

34

45

1,665

53.7

3,300

Nov.

47

45

41

TT

45

50

50

53

48

55

65

69

73

67

65

67

65

67

65

69

73

77

73

71

63

58

53

60

60

50

-

1,791

59.7

3,550

Dec.

53

55

47

47

50

51

50

55

75

77

81

77

71

71

71

71

73

63

67

60

65

56

6£

62

67

58

53

60

55

47

45

1,895

61.1

3,760

Jan.

Eo- 53

6£

6£

63

63

63

71

65

6£

58

58

69

67

65

58

69

67

63

69

69

65

63

65

67

60

60

62

6£

60

73

1,973

63.6

3,910

Feb.

85

87

87

85

81

79

85

87

85

83

85

83

83

9£

59

85

83

81

81

79

77

75

75

81

87

89

85

83

_

-

2,337

83.5

4,640

Mar.

83

83

83

85

85

77

77

77

77

79

94

117 T0~9

105

94

89

87

87

85

77

73

73

71

65

12

63

65

9£

105

96

75

2,588

83.5

5,130

Apr.

56

41

34

35

55

48

45

51

65

63

45

51

55

60

55

44

34

37

38

55

73

75

75

69

65

6£

58

48

34

55

-

1,581

5£.7

3,140

May

83 m

67

63

41

41

44

47

33

34

41

42

47

44

58

69

71

83

62

69

55

32

35

53

4£

35

30

40

33

34

21

1,530

49.4

3,030

June

26

£6

£1

£4

30

33

28

35

40

57

33

30

£8

13

6.8

5.4

7.£

9.9

11

12

7.7

6.8

9.2

9.2

1£

11

6.8

5.0

4.1 TTT53E.2

17.7

1,060

July

4.6

BT4

6.8

7.2

13

6.8

8.2

14

8.2

5.0

9.9

8.2

9.2

8.2

1£

1£

9.9

7.7

7.2

8.2

8.6

17

12

18

33

23

20

24

12

6.8

5.9

352.0

11.4

698

Aug.

6.4

11

1£

16

9,£

18

28

£3

18

17

6.4

4.1

772

6.8

7.£

6.4

11

15

17

17

£4

32

£4

17

28

35

63

TO

40

44

31

634.7

20.5

1,260

Sept.

£7

24

24

£1

£3

1£

8.?

177

11

11

11

18

13

16

13

15

14

14

16

14

16

15

18

15

14

12

11

12

12

8.6

-

448.0

14.9

889

Calendar year 1950: Max 586 Mln 9.2 Mean 68.3 Ao-ft 49,460

Water year 1950-51: Max 144 Mln 4.1 Mean 47.5 Ao-ft 34,370

Peak discharge (base, 5,000 cfs). No peak above base.
GILA RIVER BASIN 395

Gila River below Blue Creek, near Virden, N. Mex.

Location. Lat 32°39', long. 108"51' , in SE^SW^ sec. 18, T. 19 S., R. 19 W., on left bank

 or canyon l£ miles downstream from Blue Creek, 10 miles east of Virden, and 16 miles 

upstream from State line.

Drainage area. 3,220 sq mi, approximately (excluding Animas River basin).

Records available. May 1914 to September 1915, June 1927 to September 1951. June 1927

 to May 1931 computed as sum of flow at Virden Bridge, 8i miles downstream, and in Sunset Canal (see Water-Supply Paper 1049).

Gage. Water-stage recorder at present site and datum since July 8, 1931. Altitude of

 ^age is 3,875 ft (from river-profile map). May 11, 1914, to Sept. 30, 1915, waterstage recorder at site 6 miles downstream, 1,000 ft upstream from intake of Sunset 

Canal.

Average discharge. 24 years (1927-51), 169 cfs.

Extremes --Maximum discharge during year, 440 cfs Aug. 28 (gage height, 4.40 ft); minimum, 1.6 cfs Aug. 21.

1927-51: Maximum discharge, 41,700 cfs Sept. 29, 1941 (gage height, 25.78 ft); 

minimum, 1 cfs July 14, 1934.

Remarks. Records good except those for period of fragmentary gage-height record, which

 are fair. Diversions for irrigation of about 6,200 acres above station. Station is 

above all diversions for Duncan Valley. Discharge measurements generally made twice 

a month.

Rating table, water year 1950-51 (gage height-, In feet,

and discharge. In cubic feet per second) 

(Shifting-control method used Apr. 22-27, May 1-4, July 23-24, Aug. 2-9, 27-31)

1.5

1.6

1.7

0.5 

3.0 

5.5

1.8 

2.0 

2.3 44

2.6 

3.0 

3.5

76

134

232

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

2728-

29

30

31

Tota:

Mean

Ac-ft

Oct.

f203

f!34

f!43

134

198

92

80

74

66

64

63

60

54

50

44

40

38

32

29 

25

27

26

37

41

40

34

24

22

Z9

31

35

1,969

63.6

3,910

Nov.

42

42

40

4T

43

44

45

46

48

47

58

63

6564"

59

60

61

60

58 

62

63

65

64

63

62

60

55

56

59

53

-

1,648

54.9

3,270

Dec.

52

53

52

49

5T

52

52

52

63

69

72

7T

69

68

66

66

66

66

65 

62

62

61

60

62

64

63

59

59

59

53

53

1,871

60.4

3,710

Jan.

53

58

59

62

63

65

65

65

66

66

68

68

66

66

66

65

66

71

69

69

69

65

64

65

64

61

63

63

65

71

2,012

64.9

3,990

Feb.

79

81

81

81

81

80

81

80

80

81

81

82

82

90

92.

88

84

81

82 

82

80

77

77

80

86

89

86

85

-

_

-

2,309

82.5

4,580

Mar.

85

85

88

90

89

85

82

84

81

88

90

110 T59~

103

96

88

86

84

79

76

75

70

66

65

64

64

64

77

93

96

82

2,594

83.7

5,150

Apr.

68

58

48

41

49

58

51

52

57

59

51

47

52

49

52

45

35

30SO" 

37

47

54

55

52

52

52

54

49

42

41

1,467

48.9

2,910

May

68

69

64

56

46

37

34

35

34

30

26

30

32

40

42

62

57

61

59

56

58

41

30

35

33

25

24

20

22

19

19

1,264

40.8

2,510

June

16

15

13

13

12

10

10

10

10

12

16

16

if12

10

9.2

7.3

6.1 

7.7

7.3

7.7

8.0

7.3

6.7

5.8

6.1

5.5

5.2

5.0

303.9

10.1

603

July

4.2

4.2

4.2

4.0

3.8

4.0

4.0

3.8

3.8

4.0

3.8

3.8

3.5

3.5

3.0

3.5

2.6

2.6

2.3 

2.3

2.3

3.0

11

~6.7 28

3.5

8.6

6.4

5.2

2.6

2.3

150.5

4.85

299

Aug.

2.6

22

8.2

28

6.1

5.5

5.0

4.0

3.5

3.2

3.0

2.8

2.6

2.3

2.0

1.8

2.0

2.6

2.6 

1.8

1.8

1.8

1.8

2.0

2.6

9.1

14

58

33

28

26

289.7

9.35

575

Sept.

20

19

16

18

15

14

10

7.7

6.4

5.2

4.5

2.8

2.3

2.6

2.6

2.0

2.3

3.2

3.0 

3.0

3.0

3.0

3.2

3.0

2.6

2.0

2.6

2.8

3.0

3.2

-

188.0

6.27

373

Calendar year 1950: Max 586 Mln 3.5 Mean 67.5 Ac-ft 48,910

Water year 1950-51: Max 203 Mln 1.8 Mean 44.0 Ac-ft 31,880

Peak discharge (base. 1,900 efs).--No peaks above base.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
396 GILA RIVER BASIN

Sunset Canal near Virden, N. Mex.

Location. Lat 32°29'20", long. 108°56'00", in NWi sec. 17, T. 19 S., R. 20 W., on left 

bank 4.5 miles southeast of Virden.

Records available.--October 1914 to September 1915, July 1922 to September 1931, and January 1939 to September 1951 in reports of Geological Survey. January 1936 to December 

1938 and May 1942 to September 1951 in files of Gila Water Commissioner, appointed by 

United States District Court of Arizona.

Gage. Water-stage recorder and Parshall flume. Altitude of gage Is 3,790 ft (from topographic map). Prior to 1936, staff gage, and 1936 to February 1942 at site 300 feet 

downstream at different datum.

Extremes.--Maximum daily discharge during year, 19 cfs Aug. 4; no flow at times.

1339-51: Maximum daily discharge, 58 cfs Apr. 12, 13, 1940; no flow at times.

Remarks. Records good. Discharge measurements generally made three or four times a mont'i 

Canal diverts from right tank: of Gila River in SW^NW^ sec. 21, T. 19 S., R. 20 W., for 

irrigation in Virden Valley. No diversions between intake and station.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

0

0

0

0

0

0

0

o

2.8

0

O

0

0

3.5

5.3

4.6

5.3

5.8

6.2

6.5

7.7

6.2

5.5

6.0

6.7

12

13

T2

12

121.1

3.91

240

NOV.

11

6.5

672" 6.2

6.5

6.7

7.0

7.0

7, .0

7.0

7.4

7.4

7.4

7.4

12

15

15

15

15

15

15

15

15

15

14

14

14

14

14

14

-

331.7

11.1

658

Dec.

14

14

14

14

14

14

14

14

14

13

13

13

13

13

13

13

16

Te

15

14

14

14

14

14

14

14

14

15

16

16

15

438

14.1

869

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

¥.4

12

TZ

12

12

12

12

12

3.9

0

8.£

12

11

10

9.5

9.8

9.0

7.4

6.7

3.5

0

0

0

0

0

0

0

0

0

0

184.8

5.96

367

Apr.

0

0

o

May

0

3

0

0

0

0

0

o

0

o

o

0

0

5.6

15

16

11

0

0

0

O

0

0

0

0

o

0

4.4

IB- 17

16

100.0

3.23

198

June

13

IT

10

a. 2

7.7

6.2

 5.8

5.5

4.6

4.6

7.7

11

12

13

9.0

6.2

4.8

4.0

2.2

2.3

2.3

2.0

3.0

2.5

2.2

1.4

1.2

1.0

.5

_^3

166.2

5.54

330

July

0

3

0

O

0

0

0

0

0

o

0

0

0

0

o

0

0

0

0

0

0

0

0

5.5

4.4

2.7

5.5

¥.6

3.7

1.4

0

27.9

0.90

55

Aug.

0.4

2.1

2.3

19

IT

4.6

3.8

1.4

.9

.7

.5

.4

.2

.4

1.0

.2

~

.1

4.3

3.5

.7

.3

.2

.3

.3

.9

7.0

16

15

15

14

126.6

4.08

251

Sept.

14

TT

13

13

13

12

7.9

5.3

4.0

2.8

2.0

.9

.3

.2

.2

.2

0

3

.1

0

.2

.9

1.0

1.0

.8

.6

.5

.8

.8

1.2

110.7

3.63

220

Calendar year 1950: Max 36 Mln 0 Mean 11.4 Ac-ft 8,270

Water year 1950-51: Max 19 Min 0 Mean 4.40 Ac-ft 3,190
GILA RIVER BASIN

397

Sunset Canal above New Mexico-Arizona State line, near Virden, N. Mex.

Location. La t 32°41' , long. 109 °02' , in NE^SEi sec. 31, T. 18 S., R. 21 W., a quarter of 

 a mile east of State line and 2.5 miles west of Virden.

records available. --February 1939 to July 1951 (discontinued).

i-age. --Water-stage recorder and Parshall flume. Altitude of gage is 3,730 ft (from topo- 

" graphic map ) .

Extremes . --Maximum daily discharge during period October 1950 to July 1951, 8.0 cfs Dec. 

' 1; no flow for many days.

1939-51: Maxiiium daily discharge, 17 cfs Sept. 16, 1939; no flow at times.

S., R. 20 W., for irrigation in Virden Valley. Diversions for irrigation above and 

below station, and flow may at times be supplemented by pumping above station.

Discharge, in cubic feet per second, October 1950 to July 1951

Day

1

2

3

4

5

6

7

8

9

:- o

:i 2

 3

 4

'5

16

37

]8

19

;:o

21

22"3

;:4

25

26

27

H8

£9"0

31

^otal

"ean

'c-ft

Oct.

00~

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.2

0

.1

.4

0

0

0

0

0

0

0

0

2.7

7.1 379"

14.4

0.46

29

Nov.

1.2

00~

0

0

0

0

0

0

0

0

0

0

2.0

.3

.1

6.2

7.3

777

3.5

2.1

0

0

0

0

0

.6

6.1

3.9

3.7

-

40.7

1.36

81

Dec.

8.0

TTS

2.0

00~

0

0

0

0

.4

7.0

7.6

5.4

6.1

1.7

2.1

2.2

.7

0

0

.8

0

.3

6.9

6.4

1.8

0

0

0

0

0

63.2

2.04

125

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

£

2.5

2.0

0

0

0

0

.3

.3

0

.1

.1

0

0

0

1.0

2.2

0

0

.1

0

2.1

~TZ 4.7

0

0

0

0

3.0

1.3

19.9

0.64

39

Apr.

0Q0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

1.3 tf 

0

-

1.4

0.05

3.8

May

0

£

0

0

0

0

2.2

1.7

0

0

0

0

0

0

2.4

5.0

6.4

T7T

.1

.1

.2

0

0

0

0

0

0

0

3.3

4.6

.7

30.8

0.99

61

June

0

£

0

0

1.1

4.3

3.9

4.5

T77

.1

0

0

0

0

2.4

4.4

2.8

3.3

2.4

0

.3

1.0

0

0

0

0

0

0

0

0

-

34.2

1*14

68

July

0.7

3.7

-

_

-

_

-

.

-

_

-

-

-

-

_

_

-

_

-

_

-

_

_

-

_

-

_

-

-

-

_

-

-

Aug. Sept.

Calendar year 1950: Max 13 Mln 0 Mean 1.63 Ac-ft 1,18O

water year 1950-51: Max - Ilin - Mean - Ac-ft -
398 GILA RIVER BASIN 

Sunset Canal wasteway near Virden, N. Mex.

Location. Lat 32°41'40", long. 109°02'55", in NW£SE£ sec. 31, T. 18 S., R. 21 W. , Just 

Below intake, at New Mexico-Arizona State line, and 2j miles west of Yirden.

Records available. February 1939 to June 1951 (discontinued).

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 3,730 ft (from topographic map).

Extremes. Maximum dally discharge during period, 2.6 cfs Mar. 3; no flow most of period. 

 1939-51: Maximum daily discharge, 11 cfs Feb. 23, 1940; no flow at times.

Remarks. Records fair. Discharge represents waste from Sunset Canal to Gila River by way 

or uarlyle Canyon. Intake of wasteway is between State line and station on Sunset 

Canal above State line.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Bay

1

2

3

4

5

6

7

8

9

10

11

12

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

0

0

0

0

^4

0.4

0.01

0.8

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

0

0.5

0.02

1.0

Dec.

0.5 o 

0

0

0

0

0

0

0

0

.3

.3

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1.1

0.04

2.2

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

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

p

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

_-

0

0

0

Mar.

0

0

2.6

IT?

0

0

0

0

.1

.2

0

.1

0

0

0

0

0

0

0

0

0

0

.3

.1

0

0

0

0

0

0

0

5.3

0.17

11

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

0

0

0

0

May

0

0

0

0

0

o

0

0

0

0

0

0

0

0

0

0

o .1

0

0

0

0

0

0

0

0

0

0

0

0

0

0.1

0.003

0.2

June

00"

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

0

.0

0

0

0

0

0

0

0

0

0

0

0

0-

0.1

0.003

0.2

July

0

0

-

-

-

_

_

-

-

-

_

-

-

_

-

_

-

_

_

-

.

_

_

_

-

_

_

_

_

_

-

0

0

0

Aug. Sept.

Calendar year 1950: Max 1.2 Min 0 Mean 0.02 Ac-ft 12.4

Oct. 1 to -June 30 : Max - Min - Mean - Ac-ft 14.9
GILA RIVER BASIN 399

Gila River at Virden Bridge, near Duncan, Ariz.

Location.--Lat 32°39'20", long. 108°57'20", in SE-fNE^- sec. 13, T. 19 S., R. 21 W., on 

downstream end of pile bent of highway bridge at Virden Bridge, 3 miles downstream 

from intake of Sunset Canal, 7 miles upstream from State line, and 10 miles southeast 

of Duncan.

Drainage area.--3,290 sq mi, approximately.

Records available.--June 1927 to September 1931 (discontinued). January 1923 to May 1927 

at site half a mile upstream, discharge measurements only, published as "near Duncan."

Gage.--Water-stage recorder. Altitude of gage is 3,770 ft (from topographic map).

Extremes.--1927-31: Maximum discharge, 7,400 cfs Aug. 11, 1930 (gage height, 9.43 ft), 

rrom rating curve extended above 4,400 cfs; no flow on some days of most years.

Remarks.--No storage above station. Diversions above station in 1950 for irrigation of 

about 8,900 acres, including about 2,700 acres under Sunset Canal; part of the acreage 

under Sunset Canal is downstream from the station. Records show inflow to VirdenDuncan Valley except for diversion by Sunset Canal 3 miles upstream.

Revisions. Revised figures of discharge, in cubic feet per second, for the water year 

ly^y are given herewith. They supersede figures published in Water-Supplv Papers 689 

and 1049.

Day

Aug. 2.

Discharge 

350 

300 

325 

350 

325 

425

Month

Water year 1928-29.. 

Calendar year 1929..

Cfs -days

38,440 

42,281

Maximum

2,890 

2,890

Minimum

0 

0

Mean

105 

116

Runoff in 

acre-feet

76,300 

83,900
400 GILA RIVER BASIN

Moddle Canal near Virden, N. Mex.

Location. La t 32°40'30", long. 108°59'30", in NE£ sec. 10, T. 19 S., R. 21 W., 1 mile 

downstream from intake and 1 mile southeast of Virden.

Records available.--October 1914 to September 1915, July 1922 to September 1931, and January laaa to September 1951 in reports of Geological Survey. January 1936 to December 

1938 and May 1942 to September 1951 in files of office of Gila Water Commissioner, appointed by United States District Court of Arizona.

Gage. Water-stage recorder and Parshall flume. Altitude of gage is 3,745 ft (from topographic map). Prior to February 1942 (staff gage prior to October 1926), at two or 

more sites from a quarter to half a mile upstream at different datum.

Extremes. Maximum daily discharge during year, 21 cfs Oct. 4; no flow for many days. 

 1339-51: Maximum daily discharge, 70 cfs (estimated) Sept. 30, 1941; no flow at 

times.

Remarks. Records good. Discharge measurements or field estimates generally made four 

rimes a month. Canal diverts from left bank of Gila River in HWiSE-J sec. 11, T. 19 

S., R. 21 W., for irrigation in Virden Valley.

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

25

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

11

11

16

21 2Cr

16

13

12

12

12

9.6

5.2

3.8

4.0

4.5

4.3

4.0

1.5

0

a

0

0

0

0

o

0

0

0

0

0

o

180.9

5.84

359

Nov.

0

0

0

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

a

0

O

0

0

0

o

0

o

0

0

0

3.8

7.9

8.2 B72"

2.6

0

0

0

0

0

0

0

0

0

0

_

_

-

30.7

1.10

61

Mar.

0

0

0

Apr.

0

0

0

Calendar year 1950: Max 28 Mln 0 Mean 3.20

May

0

a

0

0

0

0

0

0

0

0

0

0

0

0

1.6

4.3 375"

0

0

0

0

0

0

0

0

0

0

0

0

0

0

9.4

0.30

19

June

0

0

0

July

00~

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

o 1.2

0

0

1.2

0.04

2.4

Aug.

0

a

0

1.2

3.2

0

0

o

aO

aO

aO

aO

0

0

0

0

0

0

1.3

2.5

1.1

0

0

0

0

0

.9

9.2

9.9

sn

5.9

41.6

1.34

83

Sept.

4.9

ITS

.5

2.2

.2

O

a

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0-

9.4

0.31

19

Ac-ft 2,310

Water year 1950-51 : Max 21 Min 0 Mean 0.75 Ac-ft 543

a No gage-height record; discharge estimated on basis of notes by resident engineer.
GILA RIVER BASIN 401

Moddle Canal at Hew Mexico-Arizona State line, near Virden, N. Mex.

 ocation.--Lat 32°41', long. 109°02', in NE^-SEr sec. 6, T. 19 S., R. 21 W., on left bank 

aFouT 500 ft upstream from State line and 2f miles west of Virden.

''ecords available. February 1939 to September 1951.

"age.--Water-stage recorder and Parshall flume. Altitude of gage is 3,730 ft (from topographic map).

"jctremes Maximum daily discharge during year, 20 cfs Oct. 5; no flow at times. 

T939-51: Maximum daily discharge, 34 cfs Aug. 13, 1944; no flow at times.

'Remarks. Records poor. Discharge measurements generally made four times a month Canal 

STverts from left bank of Gila River.

Discharge, In cubic feet per second, water year October 1950 to September 1951

r*y

2

.5

\

'5

IJ

7

1

3

30

:i

32

]3

3.4

].5

16

]7

]B

:920

HI

zz

23

24

1-5

26

27' 8

29'0

= 1

' ->tal

"°an

.'c-ft

Oct.

11

7.8

12

19

20

16

11

7.6

6.2

6.0

6.2

2.9

1.9

2.7

2.8

2.8

3.5

2.0

a.

0

0

0

0

0

0

0

0

0

0

0

0

141.4

4.56

280

Nov.

0 5

0

o

0

o

0

0

0

0

0

0

.2

7T

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

-

0.3

0.01

0.6

Dec.

0

0

0

Jan.

O

TJ

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.5 o 

0

o

0

0

0

.1

0

0

0

0.6

0.02

1.2

Feb.

0

(5

0

.1

o

0

0

0

0

0

0

0

0

o

0

0

4.8

377

o

0

0

0

0

0

0

0

0

0

_

-

-

8.2

0.29

16

Mar.

O

TJ

0

0

O

0

O

0

0

0

0

0

0

o

0

0

0

0

0

0

0

o

0

0

0

0

.8

.9

7T

0

0

1.8

0,6

3.6

Apr.

0

0

0

May

0

0

0

June

0

0

0

July

0

0

0

Aug.

0

TJ

0

0

0

0

o

0

0

0

0

' 0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0

4.9

9.6

4.1

11

29.6

0.95

59

Sept.

12 "J.I

2.8

3.7

1.5

0

(5

0

0

0

0

0

0

0

0

0

0

0

0

0

O

0

0

0

0

o

0

0

0

0

-

24.1

0.80

48

"'alendar year 1950: Max 24 Mln 0 Mean 2.31 Ac-ft 1,670

'''ater year 1950-51: Max 20 Mln o Mean 0.56 Ac-ft 408
402 GILA RIVER BASIN

Diversions from Gila River in Duncan Valley, N. Mex.-Ariz.

Location. Duncan Valley lies along Gila River in Hidalgo County, N. Mex., and Greenlee 

County, Ariz. The part in New Mexico is also known as Virden Valley. The valley extends from a point about 8 miles east of State line to vicinity of Guthrie, Ariz. 

Nine canals, listed in the following table according to their position from east to 

west, and several pumps, have rights to divert water from Gila River for irrigation in 

the valley. The first 3 canals listed divert in New Mexico, with the Duncan Canal receiving water from the Moddle Canal, and the others divert in Arizona. Intake of Sunset Canal, at eastern end of valley, is 6 miles downstream from station on Gila River 

below Blue Creek,,near Virden, N. Mex. Intake of York Canal at western end is about 14 

miles upstream from station on Gila River near Clifton, Ariz.

Records available.--October 1936 to September 1951 (combined monthly diversions in Duncar 

vaney ana annual diversion by each canal). Records of daily diversion are available 

for Sunset and Moddle Canals, 1914, 1915, 1922-31, 1939-51 (see pp.396, 400' for 1951 

records); for Gosper-Windham Canal, 1914, 1915, 1922-27 (included with records for Surset Canal since October 1935); for Valley Canal, 1914, 1915, 1923-31; for Duncan Cana], 

1923-28; for Black-McClesky and Colmenero Canals, 1923-31. Monthly records for these 

canals have been published in Water-Supply Paper 1049 for water years prior to 1939.

Gages.--Water-stage recorders and Parshall flumes on canals, and rated pumps for pumped 

water.

Cooperation.--All records except those for Sunset and Moddle Canals furnished by Gila Water 

Commissioner. Combined monthly diversions compiled by Gila Water Commissioner and'Geclogical Survey.

Annual diversions, In acre-fe

and

;t, to each canal during calendar year 1950 

rater year 1950-51

Canal

Miscellaneous Pumping. ....

Total. ..................

Calendar year 1950

0

12,820

Water year 1950-51

0

3,980

All water received through Moddle Canal and not Included in that 

record.

Combined monthly discharge of canals diverting from Gila River

In Duncan valley, New Mex.-Ariz., during water year

October 1950 to September 1951

Month

December. .................

Calendar year 1950. .....

September .................

Water year 1950-51......

Discharge in cubic feet per second

Maximum

30

14 

16

82

0 

8.2 

12 

0 

23 

13 

5.6 

32 

19

32

Minimum

4.6 

6.5 

13

0

0 

0 

0 

0 

0 

.1 

0 

.2 

C

0

Mean

12.9 

11.1 

14.1

17.7

0 

1.1 

6.0 

0 

3.8 

5.5 

.93 

6.0 

4.0

5.5

Diversions In 

acre-feet

793 

658 

869

12,820

0 

61 

367 

0 

234 

330 

57 

369 

239

3,980
RIVER BASIN 403

Cfila River near Clifton, Ariz.

Location. --La t 32°57'50", long. 109°18'15", in SW^-SW^ sec. 30, T. 5 S., R. 30 E., on left 

DanK 1 ,100 ft upstream from highway bridge, 6 miles upstream from San Francisco River, 

and 7 miles south of Clifton.

drainage area. 4,040 sq mi, approximately.

Records available. November 1910 to July 1918 (published as Cfila River at Cfuthrie), March

 lyyy to Uctober 1933, May 1935 to June 1947, May 1948 to September 1951.

Gage . Water-stage recorder since Mar. 29, 1928. Datum of gage is 3,339.3 ft above mean

 sea level, datum of 1929, unadjusted. Nov. 6, 1910, to July 11, 1918, staff gages at 

2 sites Sj miles upstream at Cfuthrie at different datums. March 1928 to October 1933, 

May 1935 to June 1947 at site 1,100 ft downstream at datum 4.03 ft lower.

Average discharge. 25 years (1911-17, 1928-33, 1935-46, 1948-51), 231 cfs.

l&tremes. Maximum discharge during year, 4,600 cfs Aug. 3 (gage height, 7.75 ft); minimum,

 fa.b cfs July 9.

1910-18, 1928-51: Maximum discharge, 28,200 cfs Sept. 29, 1941 (gage height, 20.12 

ft, site and datum then in use); minimum, that of July 9, 1951.

Remarks . Records good. Diversions for irrigation of about 14,300 acres above station. 

StaTion is below all Duncan Valley diversions. Discharge measurements generally made 

twice a month.

Revisions (water years). W 1059: 1911, 1912, 1915, 1917. W 1179: 1929(M), 1934(M) .

Rating tables, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1 to Dec. 31, Feb. 28 to Mar. 8, 

May 26 to June 30)

Oct. 1 to Dec. 31 Jan. 1 to Sept. 30

1.8 

2.0 

2.2 

2.5 

3.0

16

34

64

135

336

1.5

1.6

1.7 

1.9 

2.2

2.0

8.0

16

42

108

2.6 

3.0 

4.0 

5.0

247

445

1,130

1,920

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4

5

6

7

8

9

10

11

12

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

m68 

57

82

142

80

62

49

44

40

38

43

44

39

33

31

27

25

24

22

22

22

25

28

28

28

24

21

18

Ts

1,563

50.4

3,100

Nov.

18

215

25 

27

28

30

32

34

35

34

34

39

47

50

JiS.

46

43

46

46

46

44

47

47

47

47

49

47

44

44

47

-

1,195

39.8

2,370

Dec.

44

40

40 

42

40

39

40

39

38

f5

46

50

52

5?

52

50

52

50

52

52

52

50

50

49

49

50

50

50

50

49

44

1,452

46.8

2,880

Jan.

42

5T5

53 

59

63

65

65

68

70

75

70

70

68

63

65

65

63

61

63

61

61

61

61

59

57

57

57

57

57

59

68

1,908

61.5

3,780

Feb.

63

6?

74 

76

76

79

74

72

70

70

72

74

79

86

88

88

88

81

83

79

81

81

74

72

76

79

81

76

_

-

2,157

77.0

4,280

Mar.

76

72

65 

68

65

63

59

59

61

74

98

TT

83

88

86

79

72

65

63

52

50

52

52

46

44

42

53

50

50

59

70

1,990

64.2

3,950

Apr.

61

55

46 

35

27

25

32

40

39

39

42

44

35

33

33

30

30

24

22

rs

33

27

33

36

36

36

36

33

32

35

1,056

35.2

2,090

May

30

36

46 

4T

40

33

25

23

20

19

18

17

17

16

17

17

17

17

18

25

24

26

26

18

15

16

15

15

14

14

15

689

22.2

1,370

June

13

T3

13 

13

12

11

11

11

11

11

12

12

11

11

11

11

11

11

375- 9.6

10

10

11

12

12

12

11

10

9.6

10

335.8

11.2

666

July

10

8.8

8.0 

8.0

8.0

8.0

T74~ 7.4

7.4

7.4

7.4

8.0

8.0

8.0

8.0

11

11

8.8

9.6

12

16

12

13

13

14

28

33

~SS 457

25

14

859.2

27.7

1,700

Aug.

31

101

1.250 

46

18

16

13

12

12

11

10

IS

10

14

63

14

13

13

14

12

13

15

13

12

11

10

14

74

88

31

14

1,958

63.2

3,880

Sept.

14

Tf

14

14

14

14

14

14

14

14

14

14

13

12

10

10

10

 srs 8.8

8.8

9.6

8.8

8.8

8.8

8.8

9.6

9.6

9.6

11

13

-

347.0

11.6

688

Calendar year 1950: Max 630 Mln 11 Mean 55.0 Ac-ft 39,790

Water year 195O-51: Max 1,230 Mln 7.4 Mean 42.5 Ac-ft 30,750

Peak discharge (base, 2,500 efs). Aug. 3 (5 a.m.) 4,6oO cfs (7.75 ft).
GILA RIVER BASIN

San Francisco River near Glenwood, N. Mex.

Location. --Lat 33°15'05", long. 108 0 5S'40", in NE-fNW^ sec. 23, T. 12 S. , R. 20 W. , on left 

DanK a quarter mile upstream from hot springs, 5 miles (revised) south of Glenwood, and 

6 miles downstream from White^ater Creek.

Drainage area. --1,660 sq mi, approximately.

Hecoras available . October 1930 to September 1951 in reports of Geological Survey. Octo-

. ror o eruary , , a se mes ups 

Average discharge .--22 years (1928-31, 1932-51), 62.4 cfs.

iixt reme s . - - maximum discharge during year, 1,320 cfs Aug. 4 (gage height, 4.12 ft); minimum 

daily, 5.6 cfs Aug. 18.

1930-51: Maximum discharge, 7,800 cfs Jan. 13, 1949 (gage height, 10.74 ft), on 

basis of slope-area determination of peak flow; minimum daily, 3.0 cfs June 18, 19, 

1950.

Major floods occurred Jan. 1& and "Oct. 14, 1916, when discharges of 90,000 cfs (or 

greater) were computed for the station at Clifton, Ariz.

Revisions . --Revised figures of maximum discharge for gome water years, superseding 

those published in the water-supply papers Indicated, are given in the following table:

Water -Supply 

Paper

734. .......

764, 879. . . 

829. .......

899

959........

Do ........

1009.... ....

1039. .......

1059. .......

1089. .......

Water 

year

1933-34 

1336-37

1942-43

1945-46

1946-47

Date

Feb . 10 or 11

Aug. 27

Dec. 11

July 15

n c n 4- 07

Aug. 21

Oct. £9, Aug. 23

Gage height 

(feet)

7.0

6.64 

8.07

7.32

6.64

5.64

3.71

7.02

5.70

*4.88

Discharge 

(cfs)

3,200

3,150 

4,710

2,300

t893

2,040

3,520

2,320

1,530

t Not previously published, 

t Occurred Aug.'23, 194'7 .

Remarks.--Records fair. Discharge measurements generally made three or four times a 

irtontn. Diversions for irrigation of about 2,000 acres above station.

Revisions.--Revised figured of discharge for periods in water years 1931, 1934, 1936-37, 

194U-42, 1945-47 are given herewith. They supersede those published in previous watersupply papers.

Day 

(water year)

1930-31

Apr . 14 .....

15. ....

17. ....

19. ....

?o£-J .....

21... ..

22.... .

23. ....

24.....

25.....

26.....

27 .....

28.....

29.....

30. ....

Aug . 8 .....

9.....

10... ..

28.....

?Q £3 . v . . .

30... ..

31... ..

Sept. 1.....

2 : ....

3.. ...

4.. ...

5.. ...

6..,. .

7. ....

9. ....

10. ....

11.....

12.... .

13.....

16.....

17.....

18.. ...

19..... 

20.. ...

21.....

22. ....

23.....

24.....

1933-34

July 21.....

23... ..

~

Diseharge 

(cfs)

52

50

90

110

100

100

100

150

130

110

100

100

200

300

250

300

400

350

50

46

51

67

89

63

57

49

57

378

100

63

52

46

42

38

420

240

221

820 

300

200

150

130

120

48

172

Day 

(water year)

1933-34

July 24 .....

25. ....

26 .....

27,....

28. ....

29.....

30... ..

31.....

Aug. 1.....

2.. ...

3.. ...

4. ....

5.....

6. ....

7.....

8... . .

9.....

10... ..

11... ..

12.. ...

13... ..

14.....

15... ..

16.. ...

17.. ...

18.. ...

19 .....

20. ....

21. ....

22 .....

23. ....

24.....

25 .....

26.....

27 .....

1935-36

Sept. 29. .... 

30.....

1936-37

Dot . 1 .....

2.....

3. ....

4.....

6. ....

7.....

Discharge 

(efB )

90

45

39

42

37

36

34

33

31

30

32

73

35

31

73

61

41

37

37

47

83

194

83

66

69

111

37

33

90

72

96

81

117

806

1,430

50

40

38

36

35

34

32

31

Day 

(water year)

1936-37

Oct. 8....

9.. ...

10....

11.. ..

12....

13....

14....

15....

16....

17....

18....

19....

20....

21....

22....

23....

24 ....

25.. ..

26....

27....

28.. ..

29.. ..

30 ....

31.. ..

Peb . 7 ....

16....

1939-40

July 25.. ..

26.. ..

Aug . 1 ....

13.. ..

14.. ..

15....

17....

Sept. 5....

6....

1940-4L

Dec. 12....

13.. ..

25....

26....

30....

31....

Jan . 1 ....

2. ...

Discharge 

(cfs)

31

31

30

30

30

30

30

30

30

30

30

30

31

12

33

34

37

42

41

40

38

36

50

70

1,530

1,550

413

341

214

517

507

1,410

319

238

477

694

733

1,570

574

244

1,220

800

500

Day 

(water year)

1940-41

Jan . 3 ....

4.. . .

5.. ..

6....

7....

8. ...

28....

Peb . 7 ....

8....

22....

23 ....

Mar . 14 ....

15....

1 6 ....

17 ....

18. ..

IS... .

20 ....

21....

22.. ..

23. ...

Apr. 26....

27....

28....

29....

30....

May 1 ....

2....

Sept. 29. . . .

30... .

1941-42

Dec. 11....

12....

1944-45

Aug. 21....

1945-46

Aug . 9 ....

26....

29....

1946-47

Oct. 29....

Aug . 23 ....

Discharge 

(cfs)

350

250

200

160

130

110

721

523

796

681

629

1,080

2,530

2,000

1,300

1,000

900

800

700

700

650

940

1,920

1,540

1,240

920

855

1,080

1,290

614

814

773

526

234

326

140

481

784
405

San Francisco River iear Glenwood, N. Mex.--Continued

Revised peak discharge.--1939-40: July 25 (8 p.m.) 3,850 cfs; Aug. 1 (8 p.m.) 2,280 ofs; Aug. 13 

(9 p.m.) 3,250 cfs; Aug. 15 (l a.m.) 2,710 cfsj Aug. 15 (10 a.m.) 3,160 cfs; Sept. 5 (5 p.m.) 1,420 

cfs.

1940-41: Dec. 25 (6:15 a.m.) 3,160 cfs; Dec. 31 (l a.m.) 2,890 ofs; Jan. 28 (1:40 p.m.) 2,000 

cfs; Mar. 15 (8:30 a.m.) 2,800 ofs; Apr. 27 (8:30 a.m.) 2.200 cfs; Sept. 29 (3 p.m.) 1,690 cfs.

1941-42: Dec. 11 (10 p.m.) 2,280 cfs; July 22 (11 p.m.) 920 cfs; Aug. 12 (9 p.m.) 1,240 ofs.

1945-46: Aug. 9 (9 p.m.) 1,580 ofs; Aug. 26 (8 p.m.) 2,320 cfs; Aug. 29 (10 p.m.) 1,100 cfs; 

Sept. 11 (9 p.m.) 1,000 ofs.

1946-47: Oct. 29 (2:40 p.m.) 1,530 cfs; Aug. 22 (10 p.m.) 1,040 cfs; Aug. 23 (8 a.m.) 1,530 cfs.

Month

September .....................

July 1934. ....................

Calendar year 1934 ..........

Water year 1935-36 ..........

Calendar year 1936 ..........

Calendar year 1937 ..........

July 1940.... ................. 

August ........................

Water year 1939 40 ..........

March.......... ...............

September .....................

Water year 1940-41 ..........

Calendar year 1945. .........

Water year 1945-46. .........

October 1946 ..................

Calendar year 1946 ..........

August 1947 ...................

Cf s-days

2 931

4,632

868.4

13,613.9

18,163

13,285

37,408

1,413

21,036

3,661

89,301

19,731

12,936.7

1,411 

13,566.7

2,233.2

10,170.2

Maximum

320

172

1,430

361

361

1,550

1,550

413

1,410

2,530

1,290

2,530

814

526

421

481 

481

784

Minimum

38

8.8

7.7

23

11

11

35

13

11 

22

11

132

260

40

24

72

13

8.3

22 

8.3

8.6 

8.2

Mean

154

37.3

63.6

49.6

50.0

367

104

102

45.6 

176

103

57.5

241

246

398

669

512

455

122

245

146

85.8

54.2

54.1

102

35.6

45.5 

37.2

72.0 

27.9

Runoff in 

acre-feet

9,190

27,000

3,790

36,030

2,160

36,270

20,390

75,110

74,180

2,800 

10,840

41,710

55,320

15,100

22,080

41,130

30,480

27,970

7,260

177,100

9,000

177,000

62,080

5,230

39,250

39,140

6,280

25,760

2,800 

26,900

4,430 

20,170

17,170

256684 O - &3 - 27
406 GILA RIVER BASIN 

San Francisco River near Glenwood, N. Hex.--Continued

Rating table, water year 195O-51 (gage height, in feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Aug. 13-22)

1.0

1.1

1.2 

1.4 

1.6

3.6

11

19

40

70

2.0 

2.2 

2.4 

2.6

118

178

246

322

406

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

267 ~2T

18

17

16

13

14

13

13

14

13

14

15

14

13

14

14

13

13

15

14

12

T2

13

13

14

12

14

13

13

13

688

22.2

1,360

Nov.

14

14

14

13

11

9.1

9.1

7.0

9TT

12

13

14

14

14

16

13

12

16

16

16

16

16

16

16

17

17

17

16

18

T5

-

423.3

14.1

84O

Dec.

17

17

18

20

19

20

20

21

2T

20

20

20

20

20

17

15

T£

16

17

18

18

18

17

18

17

17

17

18

16

17

17

562

18.1

1,110

Jan.

19

21

21

19

19

18

16

14

13

T5

17

23

21

18

20

22

22

22

23

23

23

24

24

23

22

23

23

23

23

27

_30

650

21.0

1,290

Feb.

29

2Z

17

23

25

25

24

23

23

22

22

20

19

23

25

25

24

25

25

26

26

25

24

25

26

27

27

26

_

_

-

673

24.0

1,330

Mar.

2£

26

24

24

23

23

22

21

19

21

22

21

20

16

16

16

15

14

13

12

12

12

12

11

11

8.4

37T

12

11

11

12

515.5

16.6

1,020

Apr.

15

14

13

13

14

16

16

16

14

12

12

15

15

12

15

14

15

16

14

17

17

18

19

T7

15

16

16

16

18

18

-

458

15.3

908

May

17

16

16

17

15

19

18

17

17

19

18

17

19

21

21

19

22

2Z

22

21

20

19

19

19

18

16

16

15

16

18

19

568

18.3

1,130

June

20

T?

20

18

17

15

13

14

15

18

15

11

16

15

15

14

16

13

16

14

13

16

14

14

16

15

14

12

9.1

37T

-

446.2

14.9

885

July

9.1

7.7

7.7

6.3

S7J

9.1

12

9.1

9.1

9.1

7.0

9.1

11

12

8.4

7.7

8.4

9.9

12

9.9

12

24

86

47

20

20

17

48

23

19

16

515.0

16.6

1,020

Aug.

17

83

40

271

72

63

20

18

16

16

16

14

12

8.4

9.9

8.4

7.0

15~ 5.6

16

13

66

19

17

114

399 ~9"4

150

224

85

41

1,950.3

62.9

3,870

Sept.

24" 30

24

21

18

13

15~7.7

14

14

13

14

12

12

13

16

16

19

19

16

15

17

15

16

14

14

13

12

13

13

-

472.7

15.8

933

Calendar year 195O: Max 267 Mln 3.0 Mean 22.2 Ac-ft 16,O3O

Water year 1950-51 : Max 399 Mln 5.6 Mean 21.7 Ac-ft 15,70O

Peak discharge (base, 800 cfs). Aug. 4 (3 a.m.) 1,320 cfs (4.12 ft); Aug. 26 (lo p.m.) 1,160 cfs 

(3.95 ft}.
GILA RIVER BASIN 407

San Francisco River at Clifton, Ariz.

Location. Lat 33°03'00", long. 109°17'45", in SW^SEv sec. 30, T. 4 S., R. 30 E., on downstream side of right pier at Railroad Boulevard Bridge in Clifton, 8j miles upstream

from mouth.

Drainage area.--2,790 sq mi, approximately.

Records available.--October 1910 to July 1918 (fragmentary), July 1927 to October 1933, May 

1935 to September 1951.

Gage.--Water-stage recorder since July 20, 1927. Datum of gage is 3,431.67 ft above mean 

sea level, datum of 1929. Oct. 23, 1910 to May 14, 1914 and March 8 to June 10, 1916, 

staff or chain gages at several sites within 2j miles upstream at different datums. May 

15, 1914 to Jan. 19, 1916, water-stage recorder 60 ft upstream and June 11, 1916, to 

July 12, 1918, 2,000 ft upstream, at different datums.

Average discharge.--25 years (1913-15, 1916-17, 1927-33, 1935-51), 196 cfs.

Extremes.--Maximum discharge during year, 735 cfs Aug. 29 (gage height, 5.31 ft); minimum, 

T2~~cTs July 8.

1927-51: Maximum discharge, 24,100 cfs Jan. 13, 1949 (gage height, 15.4 ft); minimum, 

8 cfs June 18, 19, 1939.

A peak discharge of 90,000 cfs occurred Jan. 19, 1916 (gage height, 16.8 ft, from 

floodmark, at gage 60 ft upstream from present gage) by slope-area determination, computed in 1940 on basis of data compiled from 1916 records. A greater flood occurred 

Oct. 14, 1916.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Discharge measurements generally made twice a month. Diversions above station for mining, municipal use and for irrigation of about 4,400 acres.

Revisions (water years). W 1049: 1911, 1913-15, 1917.

Rating table, water year 1950-51 (gage height , In feet,

and discharge, in cubic feet per second)

(Shifting-control method used Dec. 5 to Apr. 1. May 13-25, 

July 24 to Aug. 2, Aug. 4-11, 25-28)

2.2

2.3 

2.5 

2.8

3.1 94

3.5 162

4.0 275

5.0 610

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

195

103

62

52

46

42

39

37

36

35

34

33

32

32

29

28

29

28

28

29

29

30

29

29

28

29

29

28

28

28

li

1,262

40.7

2,500

Nov.

26

27

28

29

29

28

27

27

26

26

29

30

31

33

33

33

36

34

35

36

37

38

37

37

37

37

38

38

37

37

-

976

32.5

1,940

Dec.

37

37

38

38

41

41

42

4T

40

40

40

40

40

40

39

37

35

34

35

34

a34

a34

a35

a36

a36

a36

a37

a38

a38

a38

a40

1,170

37.7

2,320

Jan.

a40

a40

40

40

39

38

38

37

35

36

38

40

46

45

40

40

40

40

40

40

41

41

42

44

45

48

50

51

53

57

62.

1,326

42.8

2,630

Feb.

59

55

50

40

43

44

45

45

45

44

43

42

41

44

44

45

43

43

47

47

45

45

45

45

50

48

46

45

_

-

1,278

45.6

2,530

Mar.

45

45

46

44

41

40

40

40

40

44

44

44

45

44

45

44

45

43

44

45

43

46

46

45

43

45

53

44

44

43

41

1,361

43.9

2,700

Apr.

40

40

40

40

40

40

41

42

41

41

39

39

38

40

39

39

40

3738-

43

45

41

39

39

39

38

37

37

38

46

1,196

39.9

2,370

May

52

47

43

40

40

40

38

40

38

37

40

40

40

40

44

45

42

40

40

37

35

35

33

33

34

34

33

27

26

25

26

1,164

37.5

2,310

June

28

29

30

31

3T

29

29

26

26

24

25

26

21

21

25

24

24

21

22

19

20

18

19

20

19

21

21

19

20

19

-

707

23.6

1,400

July

17

16

16

14

14

13

14

12

14

13

13

16

16

22

21

19

19

18

17

18

24

27

51

~75 178

65

54

43

50

48

41

982

31.7

1,950

Aug.

50

96

178

170

182

92

72

a50

a35

a31

a27

a25

a23

a21

a27

28

28

24

21

23

31

33

63

42

51

139

221

436

518

211

112

3,060

98.7

6,070

Sept.

a71

a51

a40

a37

33

28

26

25

28

26

25

25

24

24

23

21

23

26

24

26

26

25

25

24

24

25

24

24

25

29

-

857

28.6

1,700

Calendar year 1950: Max 255 Mln 12 Mean 47.2 Ac-ft 34,140

Water year 1950-51: Max 518 Mln 12 Mean 42.0 Ac-ft 30,420

Peak discharge (base, 2,000 cfs). No peak above base.

a No gage-height record] discharge estimated on basis of recorded range in stage and records 

nearby stations.
408 GILA RIVER BASIN

Willow Creek diversion from Black River, near Morenci, Ariz.

Location.--Lat 33°24'45", long. 109°42'45", in SW£ sec. 23, T. 1 N., R. 25 E., unsurveyed, 

nr~San Carlos Indian Reservation, on left bank Just downstream from end of diversion 

pipe line, 3 miles northeast of Point of Pines, 5f miles southeast of pumping plant 

(on Black River 2,100 feet downstream from Freezeout Creek), and 29 miles northwest of 

Morenci.

Records available. April 1945 to September 1951.

Gage.--Water-stage recorder and steel-edged rectangular weir. Datum of gage is 5,985 19 

ft above mean sea level (Phelps Dodge bench mark).

Average discharge. 6 years, 11.2 cfs.

Extremes. Maximum discharge during year, 21.9 cfs May 8 ('gage height, 2.80 ft): no flow 

ror many days Nov. 20 to Mar. 15.

1945-51: Maximum discharge, 22.7 cfs Mar. 18, 1947 (gage height, 2.82 ft); no flow 

for some periods in each year.

Remarks. Records excellent. The entire flow consists of Black River (head of Salt River) 

water which is pumped into headwaters of Willow Creek (tributary of Eagle Creek) for 

mining, metallurgical treatment of ores, and domestic supply in vicinity of Morenci.

Rating tables, water year 195O-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Dec. 31

1.75

1.8

1.9 

2.1

.3 

1.2 

4.0

2.3 

2.5 

2.8

8.0

13.1

21.9

Jan. 1 to Sept. 30

2.3 

2.5 

2.8

8.0

13.0

21.9

Note. Same as 

preceding table 

below 2.3 ft.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

12.0

*12.0

11.9

11.9

11.9

12.0

12.0

12.0

12.0

13.2

14.3

14.3

14.6

14.2

14.0

14.2

14.2

14.0

14.4

16.5

17.8

*18.2

19.0

T4T5-

11.1

11.2

11.4

11.3

11.1

10.9

To79~

413.0

13.3

819

Nov.

13.1

13.5

13.4

13.5

13.6

13.2

13.4

12.9

16.3

17.9

*17.6

17.6

17.6

17.6

17.6

17.6

17.8

17.6

*17.6

4.4

0

0

0

0

0

0

0

0

0

0

-

303.8

10.1

603

Dec.

0

(T

0

O

0

0

.2

72

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

Feb.

0

<T

0

0

0

0

0

0

0

0

0

0

0

.1

71

.1

0

.1.1

.1

.1

0

.1.1.1

.1

.1.1

_

_

-

1.3

0.05

2.6

Mar.

0

<T

0

0

0

0

0

0

0

0

0

0

0

0

10.5

*19.4

19.7

1571

18.7

19.1

19.6

19.1

19.6

19.4

19.6

19.6

19.1

19.

19.

16.

*13.

312.

10.

619

Apr.

14.5

14.9

14.8

16.6

16.6

16.7

16.4

16.6

16.6

16.9

16.7

16.7

16.7

16.7

16.7

16.6

16.7

16.9

16.1

14.9

*11.6

T2TS12.5

15.2

16.9

15.9

13.4

14.8

14.9

16.0

469.1

15.6

930

May

17.4

16.1

14.7

13.4

13.3

13.2

16.7

21.0

197T

*17.2

*14.9

15.4

15.3

15.3

15.4

15.4

15.3

15.6

13.0

10.9

11.1

11.0

15.0

16.4

14.0

14.5

14.9

15.6

15.4

15.2

15.4

467.1

15.1

926

June

*15.0

15.2

15.2

14.5

12.2

12.4

12.1

12.4

12.5

12.5

12.6

12.9

13.5

15.7

TBTo

15.4

15.3

15.4

15.0

*15.3

14.8

11.4

8.7

8.3

8.3

6.9

779" 6.1

8.8

8.2

-

369.5

12.3

733

July

8.4

8.3

8.4

8.2

FT?

8.2

13.2

18.0

17.8

18.0

*17.8

17.9

17.8

17.6

18.2

17.9

19.0

19.9

1977

19.7

19.6

19.6

19.6

19.6

19.6

19.6

19.4

19.9

19.3

19.9

19.3

517.6

16.7

1,030

Aug.

*19.9

T877

17.2

17.9

17.8

16.0

15.2

15.2

14.9

15.3

14.8

12.4

13.0

12.5

12.6

12.6

12.8

12.9

13.4

14.8

*13.9

12.5

12.6

12.4

12.6

12.6

12.6

12.5

12.5

12.5

7.7

434.3

14.0

861

Sept.

4.0

2.4

37T

3.3

2.7

12.5

19.0

19.6

T97T

*15.1

12.4

12.5

12.5

12.5

13.2

13.8

13.7

13.7

14.1

13.8

13.5

13.5

13.5

16.4

17.3

15.5

16.4

14.1

12.0

12.1

377.3

12.6

748

Calendar year 1950: Max 20.5 Mln o Mean 9.98 Ac-ft 7,230

Water year 1950-51: Max 21.0 Hin 0 Mean 10.0 Ac-ft 7,270

* Discharge measurement made on this day.
GILA RIVER BASIN 409

Willow Creek near Point of Pines, near Morencl, Ariz.

Location. Lat 33°22'45", long. 109°39 I 00", in NW£ sec. 2, T. IS., R. 26 E., unsurveyed, 

 in S'an Carlos Indian Reservation, on right bank at head of box canyon, 4 miles east of 

Point of Pines, 10 miles west of Double Circle Ranch, and 23 miles northwest of Morenci.

Gage. --Hater-stage recorder and concrete control. Altitude of gage is 5,804 ft (by 

barometer) .

Average discha'rge . --7 years, 11.0 cfs.

Extremes. --Maximum discharge during year, 878 cfs Aug. 5 (gage height, 6.75 ft), from 

 rating curve extended above 60 cfs on basis of slope-area determinations at gage heights 

7.96, 8.75, and 10.1 ft; no flow for many days from November to March.

1944-51: Maximum discharge, 1,390 cfs July 10, 1946 (gage height, 7.96 ft), from 

rating curve extended above 60 cfs on basis of slope-area determinations at gage heights 

7.96, 8.75, and 10.1 ft; no flow for .many days each year.

Revisions. --The figures of maximum discharge for some water years have been revised 

as shown in the following table. They supersede those published in water-supply papers 

indicated.

1039.

1059.

1089.

1119.

1149.

Water 

year

1944-45

1945-46

1946-47

1947-48

1948-49

Date Gage height 

(feet)

Discharge 

(cfs)

"'emarks .--Records excellent except those above 30 cfs, which are poor. Almost all base 

flow past this station is water pumped from Black River (see record on preceding page).

evisions.--Revised figures of discharge for high-water periods in water years 1945 to 

1947, 1949, and peak discharges for the water year 1948, superseding those published in 

previous Water-Supply Papers 1039, 1059, 1089, 1119, and 1149, are given herewith.

Day 

(water year)

1944-45

Mar . 26 ....

27. ...

1945-46

July 10. ...

Discharge 

(cfs)

52

71

148

Day 

(water year)

1946-47

July 22 ....

Aug. 12....

1948-49

Jan. 11. ...

Discharge 

(cfs)

87

67

56

Day 

(water year)

1948-49

Jan. 12. ...

13. ...

14. ...

23... .

24. ...

Discharge 

(cfs)

loo

518

147

78

61

Revised peak discharge.--1944-45: Mar. 26 (7:30 p.m.) 168 cfs (3.95 ft);

July 28 (

1945-46 

cfs (3.67

1946-47

.) 174 cfs (3.99 ft); Aug. 3 (5 a-.m.) 101 cfs (3.45 ft).

cfs (7.96 ft); Sept. 11 (9:3O p.m.) 128

6.S ft)

(4.27 ft);

1947-48: 

ft).

1948-49: 

(6.37 ft); 

(4.53 ft).

July 22 

Aug. 22

3:30 p.m.) 705 cfs (6.25 ft); Aug. 12 (3:20 p.m.) 935 cfs

8 p.m.) 351 cfs 

7 p.m.) 276 cfs 

July 24 (6 p.m.) 93 cfs

Jan. 11 (7:30 p.m.) 

Jan. 23 (6:30 p.m.-)

.92 ft 

.56 ft 

.38 ft

(3.67 

(4.51

Aug. 28 

Sept. 8 

Aug. 20

5:30 

12

i.) 222 

) 90 cfs (3.36 ft). 

.) 428 cfs (5.25

ft); Jan. 13 (2 p.m.) 

ft); July 24 (7 p.m.)

744 cfs 

27O cfs

Month

water year 1944-45.. 

Calendar year 1945..

Water year 1945-46.. 

Calendar year 1946..

Water year 1946-47.. 

Calendar year 1947 . .

Water year 1948-49.. 

Calendar year 1949..

Cf s-days

497 3

2,876.4 

3,911.0

3,171.6 

3,382.8

4,836.2 

4,858.7

5,148 

5,189.6

Maximum

71 

71

158 

158

87 

87

518 

518

Minimum

0 

O

0 

0

0 

0

0 

0

Mean

7.88 

10.7

8.69 

9.27

13.2 

13.3

14.1 

14.2.

Runoff in 

acre-feet

5,700 

7,750

6,290 

6,710

9,600 

9,640

10,210 

10,290

Rating tables, water year 1950-51 (gage heignt, in feet, 

and discharge, in cubic feet per second)

i Dec. 31 Jan. 1 to Sept. 30

72

108

Hote. Same as pr 

ceding table below 

2.5 ft.
410 GILA RIVER BASIN

Discharge, in cubic feet per second, of Willow Creek near Point of Pines, Morenci, Ariz. 

water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*13.0

11.5

11.5

11.5

11.5

11.3

11.5

11.5

11.5

11.5

13.8

13.6

14.1

13.8

13.6

13.8

13.8

13.6

13.8

16.6

*16.0

17.7

18.3

TS70"

10.4

10.6

10.6

10.6

10.1

TlTZ

10.6

398.9

12.9

791

Nov.

11.8

13.0

13.0

13.0

13.3

13.0

13.3

12.5

15.1

17.4

*17.4

17.2

17.0

17.1

17.1

17.1

17.1

17.1

17.1

*9.2

.2

0

3

0

0

0

0

0

0

0

299.0

9.97

593

Dec.

0

0

0

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

3

0

0

0

0

0

0

0

0

0

0

0

0

3.6

*18.0

19.1

18.8

18.4

18.8

19.1

18.8

19.1

19.1

19.1

19.7

T977

19.1

19.1

17.1

*13.3

299.9

9.67

595

Apr.

13.8

14.1

14.1

15.6

16. S

16.5

16.2

16.2

15.9

16.2

15.9

15.9

15.9

15.9

15.9

15.9

15.9

15.9

16.5

15.0

11.3

*Tr75

11.8

12.9

16.8

15.3

12.5

13.8

14.7

15.4

-

450.4

15.0

893

May

17.8

15.6

14.7

11.8

12.3

12.3

14.3

20.1

1574"

17.1

*14.1

14.7

14.4

14.7

15.0

14.7

14.4

15.0

13.5

10.2

10.6

10.6

13.0

16.5

13.5

14.1

14.4

15.0

15.0

14.7

15.0

447.5

14.4

888

June

*14.7

14.7

15.0

TI7T

11.5

12.3

12.3

12.0

12.0

12.0

12.0

12.0

12.1

14.7

14.1

14.4

14.4

14.4

13.8

14.4

*13.8

12.6

6.7

7.6

7.4

7.0

5.2

575

7.8

7.4

-

348.8

11.6

692

July

7.4

7.4

7.3

TTZ

7.6

7.4

9.8

17.1

17.1

17.1

*17.1

17.4

17.4

17.1

18.4

18.1

18.1

19.7

19.1

19.4

19.4

19.4

19.4

19.4

19.4

19.4

19.4

20.7

T9T4

20.4

19.7

503.4

16.2

998

Aug.

27.7

20.1

17.1

18.1

7j>

16.5

14.1

13.8

13.8

14.1

13.8

10.9

11.8

11.5

11.8

11.5

11.3

11.8

11.8

19.0

*13.8

11.8

11.5

12.0

11.8

12.0

29.0

26.1

14.7

12.0

8.S

519.0

16.7

1,030

Sept.

3.6

2.0

777

2.6

2.1

8.3

18.1

19.4

T9TT

*16.7

11.0

11.5

11.8

11.8

11.5

12.8

12.5

12.8

12.8

12.8

12.8

12.5

12.5

15.0

17.1

15.7

15.9

15.0

11.7

12.0

-

356.1

11.9

7C6

Calendar year 1950: Max 18.8 Min 0 Mean 9.49 Ac-ft 6,870

Water year 1950-51: Max 75 Min 0 Mean 9.93 Ac-ft 7,190

ise, 60 cfs). Aug. 1 (6 p.m.) 138 cfs (3.72 ft); Aug. 5 (3:30 p.m.) 878 cfs (6.75 

i.m.J 103 cfs (3.46 ft). Figures of peak discharge include water from Black 

follows: Aug. 1, 19 cfs; Aug. 5, 17 cfs; Aug. 27, 12 cfs.

Peak discharge (ba 

ft); Aug. 27 (1:30 

River, estimated as ____.._. __^= . _, _ 

* Discharge measurement made on this day.
GILA RIVER BASIN 411 

Willow Creek near Double Circle Ranch, near Morenci, Ariz.

Location. Lat 33°21'15", long. 109°31'30", in NE£ sec. 13, T. IS., R. 27 E., unsurveyed, 

in San Carlos Indian Reservation on left bank 1 mile upstream from lower end of box 

canyon, 2^ miles northwest of Double Circle Ranch, 2| miles upstream from mouth, and 

19 miles northwest of Morenci.

Drainage area.--149 sq mi.

Records available.--August 1944 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 4,969 ft (by barometer).

Average discharge.--? years, 11.7 cfs.

Extremes. Maximum discharge during year, 1,370 cfs Aug. 5 (gage height, 7.1 ft), from 

rating curve extended above 70 cfs by logarithmic plotting; minimum, 0.4 cfs Jan. 14. 

1944-51: Maximum discharge, 2,010 cfs Jan. 13, 1949 (gage height, 6.49 ft), from 

rating curve extended above 70 cfs on basis of slope-area determination at gage height 

5.90 ft; no flow Sept. 1-10, 1944, and part of June 29, 1946.

Remarks. Records excellent except those for periods of ice effect, which are fair, and 

 those above 30 cfs, which are poor. Major portion of flow past this station is water 

pumped from Black River (see p. 441).

Tating table, water year 1950-51, except periods of lee effect or Indefinite stage-discharge relation 

(gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Aug. 5 to Sept.25)

2.8 0.8

2.9 1.9

3.0 3.6

3.1 6.2

3.3 

3.5

3.9

4.3 115

14.3

26.0

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

 11.8

10.9

11.1

10.9

10.4

10.6

10.6

10.6

10.9

12.9

13.3

13.6

13.8

14.0

13.8

14.0

14.0

14.0

15.0

15.2

*17.5

17.5

18.0

1272

11.5

11.5

11.8

11.8

11.8

11.5

397.4

12.8

788

Nov.

11.3

13.6

13.8

13.8

13.8

14.0

14.0

14.0

14.0

*16.2

17.0

17.5

17.8

18.3

1873

18.0

18.0

18.0

18.3

18.3

*7.6

3.7

2.7

*2.0

1.8

1.7

1.6

1.6

1.5

1.4

-

343.6

11.5

682

Dec.

1.2

T72

.2

* .2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

Ooi

.3

.3

.3

.3

.3

.3

.3

.3

b .2

b .2

b .2

.3

.3

.3

.3

.3

38.6

1.25

77

Jan.

1.4

bl.l

*bl.3

1.3

1.2

1.1

bl.l

bl.2

bl.3

bl.3

1.2

1.1

b.9

bl.O

bl.O

.0

.0

.0

.0

.0

.0

b .0

.0

.0

.0

1.1

1.2

1.2

1.3

1.6

1.5

35.4

1.14

70

Feb.

*1.3

1.3

1.1

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

1.6

1.7

1.6

1.6

1.6

1.6

1.8

2.0

2.0

1.9

1.8

_

_

-

41.2

1.47

82

Mar.

.8

.O

.8

.4

.5

* .5

.4

.4

.4

.3

.3

.3

.3

* .3

.3

1.7

11.6

14.5

15.7

*16.2

16.7

17.2

17.5

17.8

18. 0

19.2

22.3

19.5

19.2

19.2

15.7

284.0

9.16

563

Apr.

*15.0

14.5

14.5

14.7

16.7

17.0

17.0

17.0

16.2

15.9

15.7

16.2

16.2

16.2

15.9

15.9

15.9

15.9

17.2

20.7

14.7

*13.3

13.6 isa

16.2

16.7

14.7

14.7

15.9

15.9

-

473.1

15.8

938

May

17.8

17.0

16.4

13.3

12.9

12.9

12.9

17.8

18.3

1873

*15.2

15.2

15.2

15.5

15.7

15.5

15.5

14.7

14.7

11.4

10.8

10.4

10.2

1475

13.4

12.9

13.1

13.1

13.3

13.3

13.1

444.3

14.3

881

June

*13.3

13.6

13.6

13.6

12.3

 11.6

*11.2

11.1

10.9

1O.9

10.9

10.9

10.9

12.2

12.9

12.

12.

12.

12.

12.

*12.

12.

8.

6.

6.

6.

*5.

4.

5.

6.

-

316.7

1O.6

628

July

6.2

672

6.3

6.3

6.5

6.8

6.5

1O.6

14.0

14.7

*15.2

15.7

17.0

16.4

16.7

17.2

17.2

17.8

17.8

18.3

18.3

18.9

19.2

19.2

19.2

19.2

18.6

19.5

20.7

20.1

19.8

466.1

15.0

924

Aug.

*50

36

19.5

*19.2

105

37

17.5

15.9

15.5

*15.2

14.7

13.1

12.2

12.7

12.4

12.7

12.4

12.7

12.7

15.0

*17.6

12.0

11,3.

11.8

11.8

12.2

32.7

99

*26.0

15.9

14.3

724.0

23.4

1,440

Sept.

9.0

5.6

3.8

4.1

4.0

3.4

12.5

19.9

1975

18.3

*12.5

12.0

12.0

12.0

11.8

12.9

12.7

12.7

12.7

12.7

12.4

12.4

12.2

12.7

14.7

14.9

14.7

15.0

13.6

12.7

-

359.4

12.0

713

Calendar year 1950: Max 18.6 Mln O.7 Mean 9.72 Ac-ft 7,04O

Water year 1950-51: Max 103 Mln 0.9 Mean 10.8 Ac-ft 7,790

Peak discharge (base. 60 efs). Aug. 1 (7:30 p.m.) 377 cfs (5.72 ft); Aug. 5 (6 p.m.) 1,370 cfs 

(7.1 ft); Aug. 28 (8:30 a.m.) 314 cfs (4.95 ft). Figures of peak discharge include Balck River 

pumped water, estimated as follows: Aug. 1, 18 cfs; Aug. 5, 17 cfs; Aug. 28, 12 cfs.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.
41 ^ GILA RIVER BASIN

Eagle Creek near Double Circle Ranch, near Morenci, Ariz.

Location. La t 33°18'00", long. 10»°29'30", in SE^ sec. 32, T. 1 S. , R. 28 E., unsurveyed, 

on left bank half a mile upstream from head of box canyon, 2f miles downstream from 

Willow Creek, 3£ miles downstream from Double Circle Ranch, and 17 miles northwest of 

Morenci.

Drainage area. 377 sq mi.

Kecoras available. August 1944 to September 1951.

oage.--water-stage recorder. Altitude of gage is 4,724 ft (by barometer).

5ve"rage discharge. 7 years, 19.0 cfs.

Extremes.--Maximum discharge during year, 1,470 cfs Aug. 28 (gage height, 4.15 ft), from 

rating curve extended above 270 cfs on basis of slope-area determination for high water 

of Sept. 11, 1944, at gage height 4.80 ft; minimum, 1.5 cfs Sept. 5.

1944-51: Maximum discharge, 2,400 cfs Sepf. 11, 1944, and Jan. 13, 1949 (gage heigrt, 

4.80 ft), by slope-area determination of peak flow; minimum, that of Sept. 5, 1951.

Remarks.--Records excellent except those for periods of ice effect, which are fair, and 

tnose above 50 cfs, which are poor. Diversions above station for irrigation of about 

500 acres; negligible diversion to one ditch between mouth of Willow Creek and this 

station. Water pumped from Black River into Eagle Creek basin 25 miles upstream is an 

appreciable part of flow past this station (see p. 441).

Inflow between station and point 2-J- miles downstream, below Sheep Wash, as determined 

by discharge measurements, was 4.4 cfs Nov. 10, 4.7 cfs Jan. 31, 4.0 cfs on May 10, and 

4.6 cfs on Aug. 10. Discharge measurements, in cubic feet per second, of the combined 

flow of Eagle Creek 900 feet above Willow Creek and Double Circle ditch are given below.

Day

1950 

Oct. 2 

22 

Nov. 10

Discharge

2.87 

1.9 

2.70

Day

1951 

Jan. 3 

Mar. 6 

Apr. 1 

22

Discharge

2.35 

2.21 

2.67 

2.12

Day

May 11 

June 1 

21

Discharge

2.32 

1.53 

.89

Day

July 11 

Aug. 4 

Sept. 11

Discharge

0.61 

1.06 

.50

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used May 20 to June 7, Aug. 1-28)

1.9

2.0

Oct. 1 to Aug. 5

3.5 2.2 

5.8 2.4 

9.2 2.7 

14.1

Aug. 5 to Sept. 30

30.4

59

131 1.0

1.2

2.1 

2.5

109

190

345

Discharge, In cubic feet per second, urater year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16,

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

14.8

*14.8

13.6

14.1

14.1

12.6

12.1

1375

12.1

12.6

13.6

14.1

13.6

14.1

14.8

13.6

14.1

14.8

15.5

16.2

18.2

*18.9

19.6

20.3

1679"

14.1

14.1

13.6

13.1

13.1

13.1

453.7

14.6

900

Nov.

13.6

16.2

16.2

16.9

16.9

16.9

16.9

16.9

17.6

*19.6

19.6

19.6

19.6

20.3

20.3

19.6

20.3

20.3

20.3

20.3

*13.1

7.8

6.8

*6.1

5.8

5.6

5.3

575

5.3

5.3

-

434.3

14.5

861

Dec.

5.3

571

5.1

*5.1

5.1

4.6 4"79

5.1

5.1

5.1

4.9

5.1

5.1

5.1

5.3

5.1

5.1

5.1

5.1

5.3

5.3

5.3

5.3

5.3

5.3

5.1

5.3

5.1

5.1

5.1

5.3

159.2

5.14

316

Jan.

5.8

573

*b5.0

5.1

5.1

5.1

5.1

b5.1

5.1

5.3

5.5

4.2 478"

b4.2

4.2

4.4

4.4

4.2

4.2

4.2

4.2

4.4

4.6

4.9

4.9

4.9

4.9

5.1

5.1

5.8

*5.3

149.8

4.83

297

Feb.

4.9

4.9

4.6 4"79

5.1

5.1

4.9

4.9

4.9

4.9

5.1

4.6

4.6

4.6

4.9

4.9

4.9

4.9

5.1

5.3

5.1

5.1

5.1

5.1

5.8

5.6

5.3

5.3

_

-

140.4

5.01

278

Mar.

5.3

6.1

5.8

5.6

5.6

*5.6

5.6

5.6

5.6

5.3

5.3

5.3

5.3

5.1

57T

*5.1

8.1

12.1

13.6

*14.8

15.5

16.2

16.9

17.6

18.2

19.6

21.9

'2T75

21.0

21.0

18.9

343.7

11.1

682

Apr.

*17.6

17.6

17.6

18.2

19.6

21.0

20.3

20.3

19.6

20.9

17.6

17.6

18.2

18.2

18.2

18.2

18.2

18.2

18.2

21.9

18.9

*16.2

15.5

15.5

17.6

18.2

17.6

16.9

18.2

19.6

551.4

18.4

1,090

May

20.3

19.6

18.9

16.9

14.8

14.8

15.5

17.6

19.6

*19.6

*16.9

15.5

15.5

16.2

17.6

16.2

16.2

16.2

16.2

13.1

11.6

127T

12.1

14.1

15.5

14.1

14.1

14.1

14.8

14.8

14.8

489.3

15.8

971

June

*14.8

14.8

14.8

14.1

13.6

12.6

12.6

12.6

12.6

12.1

12.1

12.1

12.1

12.1

14.1

14.1

14.1

14.1

14.1

14.1

*13.6

14.1

12.1

8.2

8.5

8.2

7.5

5.8

578

7.5

-

358.9

12.0

712

July

6.8

6.8

6.8

6.5

6.8

6.8

6.5

T75

11.2

11.6

*13.1

13.6

14.8

14.8

14.1

14.8

14.8

14.8

14.8

14.8

14.8

22.7

17.6

17.6

19.6

18.9

18.2

18.2

50

20.3

20.3

459.9

14.8

912

Aug.

*92

58

24.8

*22.9

113

53

17.9

15.9

14.6

*13.9

13.9

12.6

11.1

TT7T

n.l

11.6 11.1 11.1 11.1

11.6

*17.5

13.9

12.6

12.6

27.6

29.4

72

371 inr

22.0

15.2

1,198.1

38.6

2,380

Sept.

10.1

6.9

5.2

4.2

4.0

3.8

^73

16.5

20.1

T777

*13.9

12.1

12.1

11.6

11.6

12.1

12.6

12.6

11.6

12.1

12.1

12.1

12.1

12.1

14.6

15.?

13. f

14. 6

15.2

13.3

-

353. 8

11. e

70?

Calendar year 195O: Max 62 Mln 2.4 Mean 13.2 Ac-ft 9,54O

Water year 1950-51: Max 371 Min 3.8 Mean 14.0 Ac-ft 10,100

Peak discharge (base. 150 efs). July 22 (2 p.m.) 242 cfs (3.00 ft); July 29 (6 p.m.) 605 cfs (3.60 

ft); Aug. 1 (9 p.m.) 997 cfs (3.98 ft); Aug. 5 (7:30 p.m.) 1,090 cfs (3.94 ft); Aug. 25 (11 p.m.) 451 

cfs (3.06 ft); Aug. 28 (10 a.m.) 1,470 cfs (4.15 ft). Figures of peak discharge include Black River 

pumped water, estimated as follows: July 22, 15 cfsj July 29, 18 cfsj Aug. 1, 18 cfs; Aug. 5, 16 

cfs; Aug. 25, 11 cfs; Aug. 28, 11 cfs.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.
GILA RIVER BASIN 413

Eagle Creek above pumping plant, near Morenci, Ariz.

'.location. Lat 33"04"00", long. 109°26'45", in sec. 22, T. 4 S. , R. 28 E., on right bank 

'£\ miles upstream from Phelps Dodge Corp. pumping plant, 5 miles west of Morenci, and 

13 miles upstream from mouth.

"Drainage area. 613 sq mi.

Records available. April 1944 to September 1951.

"age.--Water-stage recorder, Parshall flume and weir. Auxiliary water-stage recorder 

75 feet downstream at different datum. Altitude of gage is 3,650 ft (from topographic 

map) .

Extremes.--Maximum discharge during year, 1,260 cfs Aug. 28 (gage height, 5.55 ft at auxmary gage), from rating curve extended above 300 cfs by logarithmic plotting; minimum, 4.6 cfs Sept. 8.

1944-51: Maximum discharge not determined, occurred Sept. 26, 1944 (stage, about 

10 feet, from floodmarks); minimum, 3.2 cfs July 1, 1946.

A discharge of 13,000 cfs (by slope-area determination of peak flow) occurred Feb. 

10, 1932, at a stage of 11 feet above normal low water at foot bridge 2\ miles downstream; the stage of the flood of Sept. 26, 1944, was about 2.5 feet lower at the same 

site.

Remarks. Records excellent below 50 cfs, fair above. Diversions above station for irrigat ion of about 500 acres, mostly above Willow Creek. Water from Black River was 

pumped into Eagle Creek basin, 5l| miles upstream from this station, for about threequarters of the year (see p. 441). Diversions by pumping for mining, metallurgical 

treatment of ore, and domestic use in and near Morenci and Clifton are made from Eagle 

Creek, 2-J miles downstream from this station, and from San Francisco River near Clifton. 

The monthly quantities diverted are shown in table below. Slightly less than 97 percent of the pumpage was from Eagle Creek.

cubic feet pe 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

:.o

: i

: 2

:s

: 4

: 5

] 6

] 7

: s

: 9

20

21

22

23

24

25

26

27

28

29

?0

n

TMtal

Mean C"sm

i't)

i -,-f t

Oct.

*18.9

18.9

18.4

18.9

19.7

19.7

18.9

18.4

19.3

18.0

17.2

T9T3-

18.9

19.3

19.7

19.7

18.9

19.3

19.7

20.1

*20.1

20.6

22,4

22.8

25.5

20.1

18.9

18.9

18.9

18.9

18,9

605.0

19.5

757

1,200

Nov.

18.9

19.3

19.7

21.5

21.5

22.4

22.4

22.4

22.4

22.8

24.6

*25.1

25.1

25.6

26.1

26.1

26.1

26.1

26.1

26.1

26.1

19.8

15.6

*14.1

13.3

13.3

13.0

13.0

12.6

T57¥

623.7

20.8

_

857

1,240

Dec.

12,6

T2T2"

12.2

12.2

*12.6

12.6

12.6

12.6

12.6

12.6

12.6

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.6

12.6

382.2

12.3

_

990

758

Jan.

13.7

1373

13.0

*12.6

12.6

12.6

12.6

12.6

12.6

12.6

12.6

13.3

12,6

12.2

TS72"

12.2

12.6

12.6

12.6

12.6

1Z.6

12.6

12.6

12.2

12.2

12.2

12.2

12.2

12.2

13.3

13.7

391.7

12.6

_

694

777

Feb.

*13.3

1370

13.0

12.6

12.6

12.6

12.6

12.2

11.9

T2T2"

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

13.3

13.0

12.6

12.6

12.6

12.6

13.3

13.0

12.2

12.2

_

_

-

351.0

12.5

_

688

696

Mar.

12.2

12.2

12.6

12.6

12,2

12.2

*12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.2

11.9

TT79"

13.3

15.6

*18.4

19.3

19.7

21.0

21.9

22.4

24.6

31.0

2575"

27.5

27.5

27.5

526.3

17.0

_

789

1,040

Apr.

25.6

*25.1

24.6

25.1

27. 0

28.5

28.0

28.5

28.0

27.0

27.5

26.5

26.1

26.1

26.1

26.1

26.1

26.1

26.5

55.6

31.5

27.0

*25.1

24.2

2T7?

26.1

26.1

25.1

26.5

31.5

805.4

26.8

_

797

1,600

May

30.0

30.0

28.0

27. 0

24.2

22.8

21.9

21.5

22.4

22.8

22.8

*21.5

21.5

21.9

22.8

22.8

22.8

21.9

21.5

21.0

18.9

17.6

17.2

16.8

19.3

18.9

16.8

16.4

TBTs

17.2

17.2

664.2

21.4

_,

813

1,320

June

16.8

*17,6

18.0

1370"

18.0

17.2

16.8

16.8

16.8

16.4

16.0

15.6

15.2

14.8

15.2

16.0

15.6

16.0

15.6

14.8

14.5

*14.8

14.8

13.7

10.5

9.8

9.5

9.5

9.2

8.6

442.1

14.7

_

628

877

July

9.2

8.6

8.6

8.9

8.9

8.6

8.9

7.9

872

9.5

10.8

*13.0

13.3

14.5

14.5

14.8

15.6

15.2

16.4

17.2

16.8

17.2

23.2

33.1

27.9

26.1

23.7

22.8

21.9

*60

"2T.5

532.8

17.2

_

703

1,060

Aug.

40

*169

54

35

31.0

*138

35

24.2

a22

a20.5

a!9.5

a!9

a!7.5

a!6

a!6

a!6

*33.4

20.4

18.6

16.4

18.8

*20.6

18.4

21.0

21.3

36

54

347

*T36~

44

25.1

1,503.7

48.5

_

767

2,980

Sept.

21.9

IF7£

11.5

8.6

5.9

5.4

4.9

875

17.6

18.4

18.0

*16.0

15.2

15.2

15.2

15.2

15.2

15.6

15.6

15.2

15.6

15.6

15.6

15.6

15.6

16.0

16.4

16.0

17.6

18.4

-

437.7

14.6

_

668

868

Calendar year 1950: Max 79 Mln 9.8 Mean is. 8 Cfsm - In. - Ao-ft 13,630

I'ater year 1950-51: Max 347 Mln 4.9 Mean 19.9 Cfsm - In. - Ac-ft 14,420

Peak discharge (base. 250 efs).--Aug. 2 (3:30 a.m.) 745 cfs (3.95 ft); Aug. 6 (2 a.m.) 585 cfs 

l'3.34 ft); AugT 28 (4 p.m.) 1,260 cfs (5.55 ft).

* Discharge measurement made on this day.

t Pumpage to Clifton and Morenci from San Francisco River and Eagle Creek In acre-feet. (Total pump- 

-rse for calendar year 1950, 8,910 acre-ftj for water year 1950-51, 9,150 acre-ft.)

a No gage-height record! discharge computed on basis of 1 discharge measurement, weather records, 

ind records for station near Double Circle Ranch, near Morenci.
414 GILA RIVER BASIN

Gila River at head of Safford Valley, near Solomon, Ariz. 

(Formerly published in supplementary table under Gila River near Solomon)

Location. Lat 32°52', long. 109°31', in SE^-NE^ sec. 31, T. 6 S., R. 28 E., on left bank 

0.6 mile downstream from intake of Brown Canal, 8 miles northeast of Solomon, and 13 

miles downstream from San Francisco River.

Drainage area. 7,950 sq mi, approximately.

Records available. February 1932 to September 1933, May 1935 to September 1951. Record 

includes now of Brown Canal. Published as Gila River below Bonita Creek, near 

Solomonsville February 1932 to September 1933, May 1935 to September 1940, in supplementary table under Gila River near Solomonsville October 1940 to September 1949, and in 

supplementary table under Gila River near Solomon October 1949 to September 1951. Records of monthly discharge June 1914 to September 1938 published as Gila River at head of 

Safford Valley near Solomonsville in Water-Supply Paper 1049.

Gage. Water-stage recorder on river and water-stage recorder and Parshall flume on Brown 

tTanal. Datum of river gage, 3,065.09 ft above mean sea level, datum of 1929, since 

December 1940. Prior to Sept. 13, 1917, at datum 1.89 ft higher, and Sept. 13, 1917, 

to Sept. 30, 1932, at datum 0.89 ft higher. Oct. 1, 1932, to Dec. 31, 1940, 3 miles 

upstream and three -eighths of a mile below Bonita Creek at different datum.

Average discharge. 37 years (1914-51), 479 cfs.

Extremes. Maximum discharge during year, 4,240 cfs Aug. 3 (gage height, 6.98 ft); minimum, 13 cfs July 9.

1914-51: Maximum discharge, 100,000 cfs Jan. 19, 1916, by slope-area determination 

of peak flow; minimum, that of July 9, 1951.

Remarks . Records good. Records show water reaching head of Safford Valley. Discharge 

measurements of river generally made twice a month. Diversions above station for mining, municipal use, and for irrigation of about 19,000 acres, much of it by pumping 

from ground water.

Cooperation. --Record for Brown Canal furnished by Gila Water Commissioner.

Revisions (water years) .--W 1059: 1914, 1916-17, 1923(M), 1924-25, 1929, 1929-31(M). 

W 1179: 1914 (M), 1915, 1918(M), 1919(M).

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

297

373

207 

159

147

198

164

136

112

97

89

87

79

86

86

72

71

69

67

67

64

63

61

59

61

65

72

72

65

63

61

3,369

109

6,680

Nov.

62

62

70 

71

77

79

83

83

83

81

81

86

97

99

104

104

99

101

101

101

101

104

104

104

101

101

101

101

99

99

-

2,739

91.3

5,430

Dec.

99

92

90 92"

92

90

92

94

94

92

96

101

103

152

102

102

101

99

99

101

101

99

100

98

97

98

100

102

102

102

102

3,034

97.9

6,020

Jan.

101

108

116 

118

118

121

118

118

118

118

121

124

124

124

124

121

124

121

121

121

121

121

121

121

118

116

116

114

111

116

152

3,686

119

7,310

Feb.

132

132

134 

134

132

132

129

129

129

124

124

121

121

126

129

134

134

129

129

129

126

126

124

121

129

134

137

137

_

_

-

3,617

129

7,170

Mar.

134

134

132

129

134

132

129

126

126

132

154

143

143

151

151

137

132

124

118

116

116

111

116

111

106

104

121

121

114

116

124

3,937

127

7,810

Apr.

121

114

104 

97

90

90

92

99

101

99

99

99

99

92

90

90

88

86

86

104

104

106

101

101

104

101

99

94

94

97

-

2,941

98.0

5,830

May

104

101

104 

104

99

90

88

77

73

71

70

68

66

70

71

75

75

71

71

68

70

68

68

62

60

60

55

52

46

44

41

2,242

72.3

4,450

June

44

44

47 

52

49

47

47

47

44

41

38

39

40

36

33

34

34

31

29

29

28

27

27

27

29

27

26

27

26

26

-

1,075

35.8

2,130

July

26

25

23 

21

19

18

18

17

15

16

18

19

21

23

26

27

28

27

24

25

26

32

36

140

181

117

99

365 1'39

135

127

1,833

59.1

3,640

Aug.

92

331

1.460 

263

266

237

155

94

78

65

55

49

44

l59~ 41

64

51

119

172

82

56

64

72

90

82

126

185

534

1,030

489

208

6,843

221

13,570

Sept.

149

117

93 

73

61

53

47

47

45

45

45

45

43

43

41

40

39

39

39

36

37

38

36

36

3_4

35

37

37

40

46

-

1,516

50.5

3,010

Calendar year 1950: Max 694 Mln 30 Mean 121 Ao-ft 87,290

Water year 1950-51 : Max 1,460 Mln 15 Mean 101 Ao-ft 73,050

Peak discharge Ibaee, 4.000 cfs). Aug. 3 (10 a.m.) 4,240 cfs (6.98 ft).
GILA RIVER BASIN 415

Diversions from Gila River in Safford Valley, Ariz.

Location.--Safford Valley lies along Gila River in Graham County, Ariz., extending from 

vicinity of Bonita Creek on the east to San Carlos Indian Reservation on the west. 

Twelve canals, listed in following table in downstream order, and one pump divert water 

from Gila River for irrigation in the valley. Intake of Brown Canal, at upper end of 

valley, is 0.6mile upstream from station on Gila River near Solomon. Intake of ColvinJones Canal, at lower end, is 25.8miles upstream from station at Calva. Records of 

canals obtained below wasteways used for regulation.

Records available.--1936-51 (records of. combined monthly diversions in Safford Valley, and 

annual diversions by each canal); records of monthly diversion for all canals except 

Fourness and Colvin-Jones, 1914-15; records of daily and monthly diversions for all the 

canals except Colvin-Jones, 1920-31; records for Brown Canal, 1931-32. Tidwell Canal 

was published as Michelana Canal in records for 1914-15, 1920-31.

Gages.--Water-stage recorders and Parshall flumes on canals and rated pump.

Remarks.--Figures shown are total diversions unadjusted for return flows. Decreed area 

For~irrigation in Safford Valley is 32,512 acres. Water obtained by pumping from 

ground water for irrigation in the valley is not included.

Cooperation. Records furnished by Gila Water Commissioner.

Annual diversions. In acre-feet, to each canal during calendar year 1950 

and water year 1950-51

Canal

Tidwell.................

Miscellaneous direct

Total. ................

Calendar year 1950

3,410

3,470

45

68,500

Water year 1950-51

402

1,360

14

29,350

nonthly discharge of canals diverting from Gila River In Safford Valley, Ariz. 

during water year October 1950 to September 1951

Month

December. .......................

Calendar year 1950. ...........

June .........

July............................

Water year 1950-51 ............

Discharge Ir

Maximum

102

375

401

cubic feet p

Minimum

77.2

0

0

er second

Mean

93.6

94.6

40.5

Diversions In

acre feet

5,760

68,500

37

2,490

29,350
416 GILA RIVER BASIN

San Simon Creek near Solomon, Arlz.

Location.--Lat 32°48'06", long. 109°38'19", in NW^NE^ sec. 25, T. 7 S., R. 26 E., 1 mile 

southwest of Solomon and 2} miles upstream from mouth.

Drainage area.--2,280 sq mi, approximately.

Records available. June 1931 to September 1932, May 1935 to September 1951. Prior to 

October 1949, published as near Solomonsville.

Gage.--Water-stage recorder and concrete control. Datum of gage is 2,960.15 ft above 

mean sea level, datum of 1929.

Average discharge.--17 years (1931-32, 1935-51), 12.7 cfs.

Extremes.--Maximum discharge during year, 7,390 cfs Aug. 2 (gage height, 14.15 ft); no 

flow for many days.

1931-51: Maximum discharge, 27,500 cfs Aug. 9, 1931 (gage height, 19.0 ft), by 

slope-area determination of peak flow; no flow for many days in each year.

Remarks.--Records good except those for periods of fragmentary gage-height record, which 

 are~poor. Diversions above station for irrigation of about 1,600 acres, mostly by

pumping from ground water. Records do no include waste water passing station from San

Jose Canal, which diverts from Gila River.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

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

*46

0

0

0

0

46

1.5

91

Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

3.1

f3.8

f.2

0

0

0

0

0

0

0

0

0-

7.1

0.24

14

May

0

0

0

June

0

0

0

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*21

0

0

0

0

0

0

0

 119

*30

123

*231

*375

*73

48

49

.5

1,069.5

34.5

2,120

Aug.

0

*829

*560

*321

f!2

f.l

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

18

f.9

0

0

1,741.0

56.2

3,450

Sept.

0

0

0

Calendar year 1950: Max 861 Min 0 Mean 7.73 Ac-ft 5,600

Water year 1950-51j Max 829 Mln 0 Mean 7.85 Ac-ft 5,680

Peak discharRe (base. 2,500 ofs). 

cfs (14.15 ft); Aug. 3 (11:30 p.m.) I

July 27 (9 p.m.) 3,260 cfs (9.2 ft); Aug. 2 (10:30 p.m.) 7,390 

,800 cfs (8.54 ft).

* Discharge measurement made on this day. Many observations of no flow made throughout the year. 

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 417

Gila River at Calva, Ariz.

Location.--Lat 33 0 11'10", long. 110°13'10", in sec. 5, T. 3 S., R. 21 E., unsurveyed, on 

SarTTTarlos Indian Reservation, on various piers of railroad bridge at head of San Carlos 

Reservoir, 1-| miles northwest of Calva.

Drainage area.--11,490 sq mi, approximately.

Records available. March to September 1929 (discharge measurements only), October 1929 to 

beptemoer iabi.

Gage. Water-stage recorder since Nov. 6, 1929. Datum of gage is 2,514.77 ft above mean 

sea level, datum of 1929.

Average discharge.--22 years, 271 cfs.

Extremes. Maximum discharge during year,,2,970 cfs Aug. 4 (gage height, 5.97 ft); no flow 

ror many days June to September.

1929-51: Maximum discharge, 27,900 cfs Oct. 1, 1941 (gage height, 11.82 ft); no flow 

for short periods in most years.

Maximum discharge known, probably in excess of 100,000 cfs occurred Jan. 20, 1916, 

computed on basis of peak discharge at stations near Solomon and at Kelvin.

Remarks. Records good. Discharge measurements generally made three times a month. Diversion above station for metallurgical treatment of ores, municipal uses, and irrigation 

of about 55,000 acres, partly by pumping from ground water.

Rating tables, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Jan. 4 to Apr. 3, Aug. 3, 4)

Oct. 1 to April 18 

0.6 7.0

125

241

1.0 

4.8

Apr. 19 to Sept. 30

0.9 30

1.2 60

1.5 108

2.0 229

2.5 410

3.0 665

4.0 1,430

5.0 2,510

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

10

~42~ 147

15

8.2

5.3

2.2

1.3

1.0

.9

.3

.3

.5

.2

-ill 7T

.3

.3

.1

^

.1

.1

.2

.8

.7

.5

.4

.4

.4

.6

241.9

7.80

480

Nov.

0.9

.8

1.4

1.1

1.1

2.3

2.0

2.2

2.2

1.6

3.0

3.8

3.2

2.8

3.2

3.4

3.6

3.4

3.4

3.2

3.4

3.6

3.6

3.6

3.6

3.6

5.0

5.3

~i7a 5.6

90.7

3.02

180

Dec.

4.8

sTo

5.0

5.0

5.3

4.8

5.0

5.6

5.6

5.3

5.6

6.1

6.1

6.1

6.1

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

8.2

9.8

7.0

6.4

6.1

6.4

191.1

6.16

379

Jan.

8.6

19

53

66

69

70

74

72

74

74

76

79

82

81

81

81

81

77

79

79

79

79

79

79

77

76

74

72

72

76

77

2,215.6

71.5

4,390

Feb.

81

82

84

88

90

90

88

86

86

86

86

82

82

79

79

94

101

101

~99 103

97

95

92

95

97

95

95

77

T

_

-

2,510

89.6

4,980

Mar.

94

95

95

97

95

95

95

92

90

90

84

84

101

103

105

101

97

94

94

94

92

86

79

77

69

72

166

143

105

94

86

2,964

95.6

5,880

Apr.

90

95

92

81

76

66

63

69

61

56

56

54

59

60

53

52

46

235- 41

177

63

59

55

48

49

45

50

49

52

56

2,108

70.3

4,180

May

53

53

53

47

49

52

49

46

36

31

26

23

21

20

23

24

24

23

24

19

16

14

12

11

8.3

7.8

6.2

4.6

3.2

2.5

1.8

783.4

25.3

1,550

June

1.6

TTs

1.4

.9

.4

.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-

6.4

0.21

13

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

5.9

182

102

285 1-38

43

89

844.9

27.3

1,680

Aug.

99

508

1,220

1.950

240

90

124

119

41

19

3.3

.2

0

0

45

5.0

0

0

24

126

34

14

1.4

9.7

38

4.1

146

158

326

346

133

5,823.7

188

11,550

Sept.

~4.6 18

.9

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

-

23.5

0.78

47

Calendar year 1950: Max 1,040 Mln 0 Mean 41.0 Ac-ft 29,710

Water year 1950-51: Max 1,950 Mln 0 Mean'48.8 Ac-ft 35,310

Peak discharge (base, 3,000 efs) . No peak above base.
418 GILA RIVER BASIN

San Carlos River near Peridot, Ariz.

Location. Lat 33°19'20", long. 110°26'50", in NW^ sec. 30, T. 1 S., R. 19 E. , unsurveyel,

 in San Carlos Indian Reservation, at downstream side of pier near right end of highway 

bridge, 2 miles downstream from San Carlos, and 2 miles upstream from Peridot.

Drainage area.--1,040 sq mi, approximately.

Records available.--August 1910 'to January 1911 (gage heights only) and April 1914 to

 September 19lb (fragmentary), published as San Carlos River at San Carlos (former-site 

at mouth), March to September 1929 (discharge measurements only), October 1929 to September 1951.

Gage --Water-stage recorder at present site since Feb. 1, 1942. Datum of gage is 2,582.71

 Tt above mean sea level, datum of 1929. Staff gage, Aug. 17, 1910, to Jan. 11, 1911, 

at former railroad bridge 10 miles downstream at different datum. Water-stage recorder, 

Apr. 26, 1914, to July 31, 1915, 9j miles downstream at different datum, and Nov. 14, 

1929, to Feb. 1, 1942, at railroad bridge 4 miles downstream at different datum.

Average discharge.--22 years (1929-51), 46.9 cfs.

Extremes.--Maximum discharge during year, 2,940 cfs Aug. 29 (gage height, 7.13 ft), from

 rating curve extended above 1,700 cfs by logarithmic plotting; no flow for many days 

during summer.

1929-51: Maximum discharge, 40,600 cfs Mar. 14, 1941 (gage height, 11.4 ft, site 

and datum then in use), from rating curve extended above 23,000 cfs on basis of records fo inflow to San Carlos Reservoir; no flow for some days in most years.

Remarks.--Records good except those for periods of fragmentary or no gage-height record,

 which are poor. Discharge measurements generally made three times a month. Diversions 

above station for irrigation of about 600 acres.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Aug. 27-29)

Oct. 1 to Dec. 31

2.5 0

2.6 .2

2.7 .9

2.8 2.7

2.9 9.0

Jan. 1 to Sept. 30

2.5

2.6

2.7

2.8

4.0 

4.5

5.0

6.0

188

373

635

1,460

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2.0

2.0

2.4

2.7

2.7

2.7

1.6

T75

1.6

1.8

2.0

2.0

2.0

2.0

2.2

2.2

2.4

2.4

2.4

2.7

2.4

3.0

2.4

2.7

2.7

2.7

2.7

2.7

2.7

2.7

72.5

2.34

144

Nov.

Z.I

2.4

2.7

2.7

3.0

3.0

3.4

3.9

3.4

3.0

3.0

4.4

5.0

5.7

5.0

6.4

5T7

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

-

130.4

4.35

259

Dec.

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

5.0

5.0

5.0

5.7

TA

5.0

5.7

5.7

5.0

5.0

5.0

5.0

5.0 5.0

5.0

5.0

5.0

5.7

157.2

5.07

312

Jan.

7.3

7.9

6.8

6.3

6.3

6.3

5.8

5.4

578

6.3

6.3

6.8

8.5

7.9

7.9

7.9

7.9

7.9

7.9

7.3

7.3

7.3

7,9

7.3

7.3

7.3

7.3

7.9

7.9

11

il

235.0

7.58

466

Feb.

10"9.2

8.5

8.5

8.5

7.9

7.9

7.9

6.8

6.5

6.8

6.8

6.8

6.3

6.8

6.8

6.8

6.8

6.8

7.3

7.3

7.3

7.3

7.9

9.2

9.2

8.5

7.9

_

_

-

214.1

7.65

425

Mar.

7.9

8.5

9.9

9.2

9.2

8.5

7.9

7.9

7.9

7.9

7.3

6.8 773"

7.3

7.3

7.3

7.3

7.9

7.9

7.3

7.9

8.5

8.5

8.5

8.5

18

31

57

26

16

12

330.4

10.7

655

Apr.

11

9.9

9.2

9.2

9.2

10

10

13

16

14

10

7.3

3.6

3.0

3.0

2.6

2.0

1.3

T78

7.1

3.6

3.0

2.1

2.1

2.6

2.6

3.3

3.3

3.6

7.3

186.7

6.22

370

nay

8.5

20

3019"

13

9.2

7.3

5.8

4;6

4.2

2.8

2.6

2.6

3.6

6.3

6.3

3.0

1.3

.9

.8

.8

.8

.5

.5

.2

.1

.2

.2

.1

0

0

155.2

5.00

308

June

O

.1

0

0

0

0

0

o

.4

.9

.2

.4

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

2.0

.07

4.0

July

0

0

0

0

0

0

o

0

0

0

0

3.0

0

0

f!4

fl.l

0

0

0

0

0

34

f .3

.4

118

4.8

202 3.9

14

44

24

463.5

15.0

919

Aug.

3.6

64

147

2.3

1.4

.7

.6

.4

.2

0

0

0

0

0

.2

.1

.3

0

.1

.1

0

0

0

0

.8

106

705

873

649

57

18

2,629.8

84.8

5,220

Sept.

9.2

577

3.0

a2

al.E

al

al

al

aZ

al.5

1.0

.4

.4

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

29.4

.98

58

Calendar year 1950: Max 2O2 Mln 0 Mean 8.04 Ac-ft 5,820

Water year 1950-51: Max 873 Mln o Mean 12.6 Ac-ft 9,140

Peak discharge (base, 2,200 cfs).--July 27 (7 p.m.) 2,420 cfs (6.81 ft); Aug. 27 (1:30 a.m.) 2,280 

cfs (6.70 ft); Aug. 29 (12:30 a.m.) 2,940 cfs (7.13 ft).

a No igage-neight gage-height record; record; discharge discharge estimated estimated on basis oofr records " "* nearoyb stations, stations.

 agmentary gage-height record; discharge computed from partly estimated gage heights
GILA RIVER BASIN 419

San Carlos Reservoir at Coolidge Dam, Ariz.

Location. Lat 33°10'30", long. 110°31'45", in NW£ sec. 17, T. 3 S., R. 18 E., unsurveyed, 

at right intake tower of Coolidge Dam on Gila River.

Drainage area. 12,890 sq mi, approximately. 

Records available. November 1928 to September 1951.

Gage. Water-stage recorder since Jan. 15, 1937. Datum of gage is at mean sea level, da- 

 turn of 1929; prior to Jan. 1, 1948, at datum 0.72 ft lower.

Dec. 7, 1928, to Jan. 14, 1937, series of stakes-with tops-at known elevations for 

reference points on right bank about 1,000 ft upstream from dam.

Extremes .--Maximum contents during year, 8,060 acre-ft Sept. 1 (elevation, '2,391.15 ft); 

no usable contents June 1 to July 27.

1928-51: Maximum contents, 819,200 acre-ft Mar. 18, 1942 (elevation, 2,501.62 ft, 

present datum); minimum (since appreciable storage was attained in 1929), no storage 

part of each summer in 1939, 1946-48, 1951.

Remarks. Reservoir is formed by concrete multiple-dome dam; dam completed Oct. 25, 1928; 

storage began Nov. 15, 1928. Total usable capacity, 1,205,000 acre-ft between elevations 2,382.63 ft (sill of lowest outlet gate) and 2,523.0 ft (top of automatic spillway gates in raised position). Dead storage below elevation 2,382.63 ft, 3,834 acre-ft 

according to 1947 survey. Figures given herein represent usable contents. Water is 

used for irrigation of San Carlos project and for power development, dependent on irrigation demands.

Revisions (water years). W 1049: 1929, 1934, 1937-38.

Usable contents, in acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

498

435

477

533

512

456

407

345

296

255

241

£28

207

200

200

200

200

200

214

221

214

221

221

228

234

234

234

241

248

248

248

Nov.

248

255

248

248

248

248

248

248

248

241

241

248

255

262

262

269

276

282

289

296

303

310

310

317

324

324

331

338

345

352

-

Dec.

345

345

352

352

358

352

317

262

234

214

194

180

167

160

146

140

133

126

120

120

106

106

100

100

100

100

100

100

100

100

133

Jan.

133

126

126

187

269

331

386

428

449

470

484

505

512

519

526

533

540

533

533

533

540

533

533

533

533

540

540

533

554

734

799

Feb.

785

792

799

814

756

719

727

727

734

734

734

727

727

698

705

712

748

785

807

814

829

821

814

829

843

850

843

836

_

-

Mar.

829

872

872

887

887

887

894

902

894

880

880

829

843

858

872

887

894

880

887

887

872

872

858

843

821

880

961

1,110

1,110

1,100

1,040

Apr.

1,020

991

976

968

961

931

887

872

836

807

734

719

698

669

655

626

597

576

626

1,030

984

909

843

763

727

669

633

611

633

669

-

May

647

647

669

676

662

640

611

597

569

526

470

414

372

352

331

310

289

276

262

241

228

214

194

173

153

126

113

100

80

59

20

Junr July

0

O

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

241

519

662

611

Aug.

741

1,350

2,690

5,980

6,700

6,790

6,630

6,410

6,130

5,790

5,360

4,970

4,580

4,190

3,800

3,480

3,100

2,740

2,380

2,230

2,130

1,990

1,800

1,620

1,410

1,260

3,300

5,120

6,890

7,650

8,000

Sept.

8,020

7,780

7,370

6,900

6,430

6,090

5,530

4,990

4,470

3,920

3,240

2,660

2,130

1,690

1,390

1,070

756

540

400

317

255

207

180

160

126

113

100

93

140

133

-

Note . Dally contents May 14-20, Aug. 6-10, Sept. 

graph based on daily 8 a.m. tape gage readings.

4-10 computed from constructed gage-height

Monthly elevation and contents, water year October 1950 to September 1951

Date

Dec. 31.. .................

Calendar year 1950. .....

Water year 1950-51 ......

Elevation 

(feet)t

2,382.83

-

-

Contents 

(acre-feet)

352

133

-

-

Change in contents 

during month 

(acre-feet)

-219

- 89 , 100

-429

t Elevation at 12 p.m.
420 GILA RIVER BASIN

Gila River below Coolidge Dam, Arlz.

Location. Lat 33°10'15", long. 110°31'45", in SWi~ sec. 17, T. 3 S. , R. 18 E., unsurveyed, 

orrTeft bank, 2,200 ft downstream from Coolidge Dam.

Drainage area. 12,890 sq ml , approximately.

Kecoras available. --July 1899 to November 1905 (fragmentary), August 1910 to February 1911

tgage" neignts and discharge measurements only), April 1914 to September 1951. 

'Gage . --Water-stage recorder and 30-foot concrete Pnrshall flume. Datum of gage Is 2,309.33 

Ft above mean sea level, datum of 1929. Prior tc Feb. 5, 1911, staff or chain gages at 

various sites and daturas above,, mouth of San Carlos River. Apr. 29, 1914, to Mar. 8, 

1937, water-stage recorder at-' various sites and daturas, within 1 mile upstream from 

present site.

Average discharge .--39 years (1901, 1904, 1914-51 , 398 cfs (adjusted for storage).

.Extremes . --Maximum discharge during year, 321 cfs Sept. 13 (head on flume, 1.90 ft); miriimum daily, 0.4 cfs on many days.

1914-51: Maximum discharge, 130,000 cfs Jan. 20, 1916, estimated on basis of peak 

discharge near Solomon and at Kelvin; no flow for several periods.

Maximum discharge since completion of CoTilidge Dam, 1,240 cfs July 31, 1937 (head en 

flume, 4.35 ft); no flow at Coolidge Dam at times in most years when gates in dam were 

closed.

Remarks .--Records excellent. Discharge measurements generally made three times a month. 

Large diversions above San Carlos Reservoir for irrigation, metallurgical treatment of 

ore, and municipal supply. About 55,500 acres of land were irrigated, a considerable 

portion by pumping from ground water. Flow regulated by San Carlos Reservoir at Coolidge Dam since Nov. 15, 1928 (see preceding page). Record Includes flow of Warm Springs 

which enters between dam and gage and was measured as 0.59 cfs Oct. 21, 0.58 cfs Dec. 1, 

and 0.60 cfs June 29.

Revisions (water years). W 1049: 1899-1904. W629: 1915-16. W 1149: 1917(M) , 1921,

Rating table, water year 1950-51 (gage neight, in feet, 

and discharge, in cubic feet per second)

0.0 0

.1 1.6

.2 6.6

.3 15

0.6 51

1.0 115

1.4 197

1.9 321

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

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]

Kean

Oct.

33

31

33

34

33

32

32

31

25

20

17

14

11

6.5

1.0

.8

.6

.6

.6

.6

.6

.4

.4

.4

.6

.6

.6

.6

.6

.6

.6

362.7

11.7

Ac-ft| 719

Nov.

0.4

.4

.6

.8

,8

.8

.8

.8

.8

.6

.6

.6

.6

.6

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

1.0

To

1.0

1.0

1.0

_

23.0

0.77

46

Dec.

1.0

170

1.0

1.0

1.0

1.0

22

28

20

17

14

12

11

9.6

8.8

7.3

s'. ;

6. ;

6 .

5.

5.

5.

5.

5.

5.

5.

5.

5.

5.

5.

241.

7.7

479

Jan.

6.6

6.0

6.0

8.0

16

28

39

47

51

58

62

66

68

71

71

72

74

74

72

72

72

72

72

72

72

74

74

72

71

44

45

1,707.6

55.1

3,390

Feb.

82

80

80

82

115

107

85

85

83

83

82

82

83

83

78

77

77

80

82

83

85

87

87

87

87

88

88

88

-

-

-

2,386

85.2

r Mar.

87

90

90

90

90

90

88

88

88

87

87

87

83

85

87

88

88

87

87

87

87

85

83

82

80.

80

88

111

119

117

111

2,797

90.2

4,730| 5,550

Apr.

106

101

95

92

92

90

85

82

77

74

71

66

65

62

61

59

57

54

54

90

111

99

88

76

68

62

58

55

55

55

-

2,260

75.3

4,480

May

55

57

BT

57

55

51

50

47

43

41

36

31

28

24

23

22

20

19

19

18

17

15

13

11

8.0

7.3

5.4

3.7

2.8

2.0 ;UL

839.8

27.1

1,670

June

0.8

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.4

.4

.4

.6

.6

.6

.6

.6

.6

.6

July

0.8

.8

.8

.8

.6

'.8

.6

.8

.8

1.0

1.0

1.0

1.0

1.6

.6 4.1

.8 1 36

,8

-

18.0

0.60

36

57

54

169.9

5.48

337

Aug.

57

87

100

1.6

1.6

3.6

136

197

197

197

197

157

197

197

197

197

197

184

175

138

97

95

99

92

110

111

43

8.0

7.3

7.3

7.3

3,530.7

114

7,000

Sept.

7.3

133

227

242

239

242

244

254

284

290

298

287

273

214

150

146

150

102

62

39

25

17

11

9.6

8.0

7.3

5.4

5.4

6.6

8.0

-

3,986.6

133

7,910

Calendar year 1950: Max 531 Mln 0.4 Mean 170 Ac-ft 123,200

Water year 1950-51: Max 298 Min 0.4 Mean 50.2 Ac-ft 36,350
GILA RIVER BASIN 421

Gila River at Winkelman, Ariz.

Location. Lat 33 0 00'10", long. 110°45'55", in NW^NEt sec. 13, T. 5 S., R. 15 E., on right

 bank: it miles north of Winkelman, 2 miles upstream from San Pedro River, and 29 miles 

downstream from Coolidge Dam.

Drainage area. --13, 280 sq mi, approximately, of which 390 sq mi is below Coolidge Dam.

Records available. --September 1917 to June 1918 (prior to closing of Coolidge Dam), Decem-

 ber iy^B to February 1935 (discharge measurements only), September 1941 to September 

1951.

Gage. Water-stage recorder since Sept. 11, 1941. Datum of gage is 1,920.95 ft above mean

 sea level, datum of 1929, supplementary adjustment of 1949. Prior to 1941 chain gage 

at bridge 1.5 miles downstream.

Average discharge. 10 years (1941-51), 174 cfs, adjusted for storage.

Extremes. Maximum discharge during year, 26,200 cfs Aug. 2 (gage height, 15.15 ft); no flow 

parts of June and July.

1941-51: Maximum discharge, 55,000 cfs Aug. 9, 1944 (gage height, 18.40 ft), by 

slope-area method; no flow parts of June, July, and August 1947, and June and July 1951.

Remarks . - -Records good except those below 10 cfs, which are fair. Large diversions above

 station for irrigation, metallurgical treatment of ore, and municipal supply, but none 

between Coolidge Dam and this station. About 55,500 acres irrigated in the basin above 

Coolidge Dam, a considerable portion by pumping from ground water. Flow regulated by 

San Carlos Reservoir (see p. 419 ). Discharge measurements generally made twice a month.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Aug. 4-26)

1.7 0

1.8 .7

1.9 3.1

2.0 7.8

2.2 22

2.4 47

2.8 124

3.4 316

4.0 585

5.0 1,190

7.0 3,020

Discharge, in cubic feet per second, water year October 1950 t^ September 1S51

Day

1

2 

3

4

S

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

AC- ft

Oct.

29

28 

28

30

30

28

26

27

26

22

18

16

13

12

10

7.8

5.0

Nov.

1.4

1.4 

1.2

172

1.2

1.4

1.4

1.4

1.4

1.2

1.2

1.4

1.9

2.1

2.1

2.4

2.4

4.5J 2.1

3.S 2.2

3.1

2.6

2.6

2.4

2.4

2.1

2.1

2.1

1.9

1.9

1.7

1.4

390.2

12.6

774

2.2

2.2

2.2

2.2

2.2

2.2

2.2

2.4

2.4

2.4

2.4

56.0

Dec.

2.4

"27? 

2.6

2.6

2.6

2.4

2.6

2.6

15

ii

18

15

14

13

12

11

10

9.8

9.1

8.4

7.8

7.8

7.8

7.8

7.8

7.8

8.4

8.4

8.4

8.4

8.4

263.5

1.87 8.50

111 523

Jan.

10

T2 

12

11

11

14

25

39

49

58

63

70

72

72

72

74

76

77

77

76

76

76

77

77

77

77

77

77

76

"Ss 97

1,822

'5BiB

3,610

Feb.

56

83 

83

85

89

~§5 127

87

87

83

83

81

79

79

77

76

76

77

31

85

85

89

87

87

89

89

87

87

.

-

2,369

84.6

4,700

Mar.

"89 87

91

91

91

91

91

91

91

91

91

89

89

87

89

89

91

91

91

91

91

91

91

91

89

95

"55 129

112

115

112

2,913

94.0

5,780

Apr.

110

10o 

99

97

99

103

93

89

83

77

74

70

68

65

63

63

60

57

133

130

115

112

97

83

76

67

60

55

^0

72

2,533

84.4

5,020

May

60

55 

55

55

55

52

52

50

47

44

40

36

31

28

27

25

22

20

20

18

16

14

12

11

9.8

7.8

6.4

5.9

5.0

4.5

5.1

887.5

28.6

1,760

June

175" 2.4

1.4

1.2

.6

.e

.4

.4

.1

.1

.1

.1

.1

O

0

o 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

9.4

0.31

19

July

0

0 

0

0

0

0

0

0

0

0

0

0

4.4

4.7

0

0

O

0

13

2.6

.1

0

10

1.5

0

0

"5.4 25

.5

.2

7.2

77.6

2.50

154

Aug.

35

~914 2,050 

71

11

5.4

13~2.4

178

178

181

184

181

178

181

181

181

190

177

167

93

76

63

68

55

192

1,540

367

70

31

21

7,959.8

257

15,790

Sept.

18

18 

158

222

229

229

235

232

256

274

'256 286

274

249

170

140

145

134

91

61

44

32

25

20

IS

14

13

12

IS

14

-

3,912

130

7,760

Calendar year 1950: Max 1,130 Min 1.2 Mean 169 Ac-ft 122,600

Water year 1950-51: Max 2,050 Min 0 Mean 63.5 Ac-ft 46,000

Peak discharge (base r 1.300 cfs).--Aug. 2 (10:3O p.m.) 26,200 cfs (15.15 ft); Aug. 27 (12:30 p.m.) 

2,910 cfs (6.90 ft).Coolidge Dam release at time of these peaks was as follows: Aug. 2, 80 cfs; 

Aug. 27, 100 cfs.

Mote. Ho gage-height record Nov. 19-3O; discharge computed on basis of records at upstream and 

downstream stations.

256684 O - 53 - 28
422 GILA RIVER BASIN

San Pedro River at Palominas, Ariz.

Location. Lat 31°22'45", long. 110°06'45", in SE£ sec. 33, T. 23 S., R. 22 E., on down-

 stream side of pier near left end of highway bridge 0.7 mile east of Palominas, 2? miles 

upstream from Greenbush Creek, 4j miles downstream from international boundary, and 13 

miles southwest of Bisbee.

Drainage area. 741 sq mi, of which 649 sq mi is in Mexico.

Records available.--May 1930 to October 1933, May 1935 to July 1941, July 1950 to September 

lysi.

Gage.--Water-stage recorder. Altitude of gage is 4,200 ft (from topographic map). Prior

 Eb Oct. 18, 1936, at datum 3.71 ft higher; Oct. 18, 1936, to Oct. 10, 1939, at datum 

3.91 ft higher; Oct. 11, 1939, to July 16, 1941, at datum 0.29 ft lower.

Average discharge. 9 years (1930-33, 1935-40, 1951), 34.0 cfs.

Extremes.--Maximum discharge during year, 5,710 cfs July 2 (gage height, 8.10 ft); minimum, 

less than 0.05 cfs on several days in June.

1930-41, 1950-51: Maximum discharge, 22,000 cfs Aug. 14, 1940 (gage height, 16.16 ft, 

present datum), from rating curve extended above 5,600 cfs on basis of slope-area determination of peak flow; practically no flow at times during summers of several years.

Greatest flood known occurred Sept. 28, 1926 (gage height, about 23.9 ft, present 

datum; discharge not determined).

Remarks.--Records good except those for periods of fragmentary or no gage-height record,

 which are poor. Minor diversions for irrigation above station both in Arizona and in 

Mexico. Record shows approximate flow of river at international boundary.

1.8

1.9

2.0

Rating tables, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Sept. 20-30)

Oct. 28 to June 29 June 3O to Sept. 3O

1.6

1.65

1.7

1.75

1.0 

1.8

1.8

1.85

1.9

2.7 

3.7

4,7

1.6

1.7

0.2 

1.1 

3.6 

9.3

2.0 

2.2

2.5 

2.8

106

197

3.1 

3.5 

4.0 

4.5

Discharge, In cubic feet per second, water year October 1950 to September 1951

32O

540

905

1,330

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

1.4

1.2

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2"z

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

*.2

.2

.2

.2

8.5

0.27

17

Nov.

~TT 0.1

.1

.1

.2

.2

.1

.2

.2

.2

.2

.2

1.3

1.8

2.0

2.3

2.5

2.7

277

2.3

1.2

.9

1.8

2.3

2.3

2.5

2.5

2.7

2.3

2.0

-

40. 0

1.33

79

Dec.

2.5

*2.7

2.7

2.7

2.5

 272 2.2

2.2

2.7

2.9

3.1

3.3

3.3

3.1

3.3

3.5

3.5

3.5

3.5

3.5

3.5

3.3

2.9

2.9

2.9

2.7

 2.3

3.3

3.5-

3.7

3.9

93.8

3.03

186

Jan.

4.1

3.7

4.3

4.1

4.1

3.7

3.1

3.1

3.5

3.7

3.7

5.1

F7T

4.5

4.5

4.3

3.9

3.9

3.5

3.3

3.5

3.5

3.5

3.7

3.5

3.5

3.3

3.3

 2.7

379

4.5

118.1

3.81

234

Feb.

4.3

3.9

4.1

4.3

4.3

4.5

4.5

4.9

5.1

477

4.3

4.1

3.9

4.1

4.3

4.7

4.3

4.5

4.5

4.3

4.3

4.1

3.7

TTT

5.1

4.7

 4.3

4.3

_

-

122.2

4.36

242

Mar.

3.9

3.7

3.3

2.5

2.5

 272 2.0

2.7

2.9

2.9

2.3

2.0

2.2

2.2

2.0

2.0

2.3

2.3

2.5

2.9

3.1

3.1

3.1

2.7

2.9

3.9

4.3

375

2.9

2.7

2.7

86.2

2.78

171

Apr.

2. -2

1.7

*1.3

1.8

2.7

2.9

2.9

2.9

2.5

2.7

1.8

1.7

1.3

1.5

1.8

1.8

1.8

1.5

2.2

5.5

2.5

2.2

1.5

1.0 375

1.3

1.8

1.8

2.2

2.7

60.5

2. 02

120

May

 TTff

1.3

1.0

.7

.7

.6

.4

.6

.7

.6

.4

.2

.17?

.7

.9

1.0

l.O

.9

1.0

1.2

fl.2

fl.O

fl.O

f.9

f.7

f.6

f.6

f.4

f.4

25.7

O.83

51

June

fO.3

f.2

f.2

*. I

.2

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

0

0

O

O

.1

.1

O

0

0

0

0

*. 1

0

0

39

42.1

1.40

84

July

636

936

fTT9~

f!8

 6.4

 27

6.4

2.6

1.4

.6

.5

15

8.7

5.9

3.6

20

 9.4

3.1

2.1

.8

29~.3

45

*143

103

16

127

42

31

20

15

2,393.8

77.2

4,750

Aug.

10

 46

 275

48

91

74

17

17

7.6

8.7

fS.3

f4.2

f3.4 76 

65

f51

f7.0 *38

8.2

3.4

32

 260

49

22

47

ess

fT36"

f49

 24

8.7

4.2

2,142.7

69.1

4,250

Sept.

"STT 3.1

1

.8

.6

.5

.5

.4

.4

.4

.5

.S

.3

.3

.3

.2

.2

.2

.2

*.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

14.3

0.48

28

Calendar year 1950 : Max - Mln - Mean - Ac-ft -

Water year 195O-51 : Max 936 Mln 0 Mean 14.1 Ac-ft 10, 210

Peak discharge (base, 2,400 cfs). July 2 (7 p.m.) 5,710 cfs (8.10 ft)j Aug. 26 (9 a.m.) 2,76O cfs 

(5.80 ft).

* Discharge measurement made on this day.

f Fragmentary gage-height records discharge computed from partly estimated gage heights.

Note. No gage-height record July 3O to Aug. 1 and Sept. 3-20j discharge estimated on basis of 

recessions of similar periods and records for station at Charleston.
GILA RIVER BASIN 423

San Pedro River at Charleston, Ariz.

Location.--Lat 31°37'40", long. 110°10'30", in NE^NE^ sec. 11, T. 21 S., R. 21 E., in 

Spanish land grant of San Juan de las Boquillas y Nogales, at downstream side of pier 

near center of highway bridge a quarter of a mile south of Charleston, l| miles upstream 

from Charleston dam site, 8f miles upstream from Babocomari River, and 29 miles upstream 

from Benson.

Drainage area.--1,220 sq mi, approximately, of which 696 sq mi is in Mexico.

Records available.--January 1904 to August 1906 (January and February 1904, gage heights 

only), (jctcoer 1910 to August 1912 (discharge measurements and some gage heights), September 1912 to September 1951. Published as "near Lewis Springs" 1910-11; "near Fairbank" 1911-26; and "at Fairbank" 1912. (

Gage.--Water-stage recorder and concrete control since Dec. 1, 1942. Datum of gage is 

3",954.26 ft above mean sea level, datum of 1929. Jan. 27, 1904, to Aug. 31, 1906, and 

Oct. 18, 1910, to Nov. 26, 1911, staff gages at various datums and sites within 1 mile 

downstream. Nov. 15, 1911, to Oct. 28, 1924, staff gages at various datums and sites 

about 6 miles downstream. Oct. 29, 1924, to Sept. 27, 1926, water-stage recorder at 

site about 6 miles downstream. May 12 to June 16, 1928, staff gage and June 17, 1928, 

to Dec. 21, 1933, and May 1, 1935, to Nov. 30, 1942, water-stage recorder at site l| 

miles downstream at datum 24.01 ft lower. Sept. 28, 1926, to May 11, 1928, and Dec. 21, 

1933, to Apr. 30, 1935, no gage; estimates of discharge.

Average discharge.--40 years (1904-5, 1912-51), 66.9 cfs.

Extremes. Maximum discharge during year, 5,730 cfs July 2 (gage height, 7.4 ft); minimum, 

 U.y cfs June 26, 27.

1916-51: Maximum discharge, about 98,000 cfs Sept. 28, 1926 (gage height, 21.9 ft, 

site and datum in use in 1928, by slope-area determination of peak flow; minimum since 

1928, that of June 26, 27, 1951.

Revisions.--The figures of maximum discharge for some water years have been revised 

as snown in the following table. They supersede those published in water-supply papers 

indicated.

Water-Supply 

Paper

439. ........

459. ........

479. ........

509. ........

549. ........

569.........

Water 

year

1916-17

1917-18

1922-23

1933-34

Date

Aug 16

Aug. 12

July 1

Sept. 9

Tt)

Gage height 

(feet)

5 7

7.3

3.9

14.2

Discharge 

(cfs)

1-13,000

a4,000

3,720

5,200

ta5.000

t Not previously published.

$ Sometime in August.

a No gage-height record; discharge estimated.

Remarks.--Records good except those for periods of fragmentary or no gage-height record, 

wnicn are poor. Diversions, mostly by pumping from ground water, for irrigation of 

about 1,600 acres above station, including an estimated 200 acres in Mexico. Record 

shows flow at Charleston dam site.

Revisions (water years). W 1119: 1939(m). Revised figures of discharge, in cubic feet 

per second, ror periods in the water years 1914, 1919 are given herewith. They supersede those published'in Water-Supply Papers 389, 509, and 1049.

Day 

(water year)

1914

Aug . 5 .....

17.....

18.....

19. ....

20.. ...

21. ....

22.....

23.....

Discharge

1,500

.

1

\ 3,000

f

J

Month

Water year 1913-14 ......

Calendar year 1914 ......

Calendar year 1918......

Water year 1918-19 ......

Day 

C*ater year)

1918

Oct. 8. ....

9.....

10. ....

11. ....

12. ....

13. ....

14.....

15. ....

Cf s-days

38,586.5

77,076

10,489

46,892

Discharge 

(cfs)

2

2

2

2

2

2

2

2

Maximum

_

-

920

6 , 050,

Day 

(water year)

1918

Oct. 16. ....

17.....

18. ....

19.....

Minimum

2.0

2

1

1

Mean

106

211

28.7

128

Discharge 

(cfs)

2

2

2

2

Runoff in 

acre-feet

76,540

152,900

20,810

92,940

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second) 

(Shifting-control method used Aug. 11)

2.3 1.0

3.0 2.5

3.1 5.0

3.2 9.0

3.3 16

3.5 38

3.7 76

4.0 164

4.5 402

5.0 780

5.5 1,310
424 GILA RIVER BASIN

Discharge, in ubic feet per second, of San Pedro River at Charleston, Ariz 

water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.8

*3T5

4.2

4.5

5.0

5.4 574"

4.8

4.5

4.2

4.2

3.8

4.0

4.0

4.2

4.5

4.5

4,5

4.2

4.8

4.8

4.8

4.5

4.8

4.8

4.8

5.0

*4.8

5.0

5.0

4.8

141.4

4.56

280

Nov.

5.0

KT0

5.4

5.4

5.8

5.8

6.2

6.2

6.2

6.2

6.2

6.2

6.6

7.0

7.4

7.8

7.8

8.2

8.6

9.0

9.0

9.0

8.6

8.6

9.0

9.6

9.6

10

10

11

-

226.4

7.55

449

Dec.

10

11

*12

12

11

12

11

11

11

12

12

12

12

10

9.6

9.0

O5

9.6

9.6

9.6

10

11

12

12

13

13

*15

14

14

16

T5

361.4

11.7

717

Jan.

16

16

15

16

16

15

13

13

13

14

13

17

17

17

16

14

13

13

13

13

12

12

11

T£

12

11

12

12

*13

15

19_

434

14.0

861

Feb.

19

T5

18

16

14

13

12

12

9.6

8.6

7.0

6.2

STB

6.6

6.6

7.4

7.4

7.4

7.4

7.4

7.8

8.2

9.0

11

14

17

*17

16

_

_

-

311.2

11.1

617

Mar.

T5" 16

16

16

15

14

14

14

14

14

14

13

12

10

9.6

9.6

 BTB" 8.6

8.6

9.0

8.6

9.6

9.0

8.6

9.6

12

12

11

12

12

10

366.4

11.8

727

Apr.

12

13

*12

12

12

14

14

14

13

12

14

12

11

11

10

10

11

11

13

14

16

14

12

12

11

11

12

12

12

M

373

12.4

740

May

15

*T3

12

10

9.6

8.6

9.6

10

9.6

9.6

8.6

8.6

8.2

8.2

9.0

9.0

9.0

8.2

7.8

7.0

6.6

6.6

6.2

5.4

5.4

5.4

5.4

5.0

4.8

ST2

5.8

253.4

8.17

503

June

4.8

TT5

4.8

*4.5

4.5

4.5

4.2

3.8

3.8

4.5

3.8

3.2

3.5

3.5

3.2

3.0

3.2

3.2

3.0

2.8

2.5

2.2

2.2

2.4

2.2

2.0

*1.9

TTS

3

3

-

100.1

3.34

198

July

500

800

5073

50

*26

19

19

9.6

7.0

6.2

5.4

6.8

9.6

10

12

8.2

*12

10

9.1

5.8

4.8

S5~4.5

*98

*251

73

166

flOO

f60

f40

f40

2,902.0

93.6

5,760

Aug.

f70

*162

330

105

227

f!50

f50

f30

182

f40

f20

f!5

flB

220

f80

flOO

f40

*101

47

109

*121

*378

78

114

111

1,010

 2751

70

*50

29

18

4,276

138

8,480

Sept.

14

TZ

10

9

8

7

6

6

5

5

5

5

5

4

4

4

4

4

4

*4.0

3.8

3.8

3.5

3.5

3.5

3.0

375

3.5

7.0

7.4

-

167.2

5.57

332

Calendar year 1950: Max 1,950 Min 2.8 Mean 41.0 Ac-ft 29,710

Water year 1950-51: Max 1,010 Mln 1.9 Mean 27.2 Ao-ft 19,660

Peak discharge (base, 3.000 cfs). July 2 (about 11:30 p.m.) 5,730 cfs (J7.4 ft, from recorded 

range in stage); Aug. 26 (3 p.m.; 4,180 cfs (6.9 ft).

* Discharge measurement made on this day.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.

Note. No gage-height record June 29 to July 4 and Sept. 2-19; discharge June 29 to July 4 estimated on basis of a normal recession curve.
GILA RIVER BASIN 425

San Pedro River near Redington, Ariz.

Location. Lat 32°22'50", long. 110°26'40", in NEijNWif sec. 19. T. 12 S., R. 19 E., on right 

Dame naif a mile upstream from Cochise-Pima County line, <±\ miles upstream f rom Redlngton, 

and 30 miles downstream from Benson.

Dra'inage area.--2,940 sq mi, approximately, of which 696 sq mi is in Mexico.

Records available.--June 1943 to June 1947, July 1950 to September 1951. Also extremes for

 water years 1948-50, published in Water-Supply Paper 1179.

Gage. Water-stage recorder. Datum of gage is 2,940.51 ft above mean sea level, datum of

 1929. Prior to July 1950, at site 400 ft downstream at datum 2.98 ft lower.

Extremes. Maximum discharge during water year, 28,600 cfs Aug. 2 (gage height, 18.0 ft), 

rrom rating carve extended above 1,400 cfs on basis of slope-area determination of peak 

flow; no flow for many days.

1943-51: Maximum discharge, that of Aug. 2, 1951; no flow at times in each year.

Maximum discharge known, 90,000 cfs Sept. 28, 1926 (gage height, 21.5 ft, former 

datum, from floodmark) computed on basis of peak discharge of same flood at stations at 

Charleston and on Gila River at Kelvin.

Remarks. Records fair except those for periods of fragmentary or no gage-height record, 

wnich are poor. Diversions above station for irrigation of about 4,000 acres, including 

an estimated 200 acres in Mexico.

Rating table, water year 1950-51 (gage height. In feet, 

and discharge, In cubic feet per second) 

(Shifting-control method used Feb. 13-2O, 

Aug. 2, 3, 14, 16-24)

2.5 0

2.6 0.3

2.7 1.6

2.8 3.9

2.9 7.3

3.1 

3.3 

3.6 

4.0

4.5

18

135

260

5.0 430

6.0 910

7.0 1,590

8.0 2,500

Discharge, In cubic feet per second, water year October 1950 to September 1951

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

0

O

0

0

0

0

0

0

0

0

0

O

> 0.1

-

1.5

0.05

3.0

Dec.

0.1

.1 

*.l

.1

.1

.2

.2

.1

.1

0

0

0

0

0

.1

.1

.1

.1.1

.1

.1

.1.1

.1

.4

.1

.1

.1

.2

.2

.3

3.5

0.11

6,9

Jan.

1.6

.4 

.4

.2

*.6

1.1

1.2

.6

.9

1.9

.6

1.3

.3

.3

.2

.3

.2

.3

.3

.3

.2

.2

.2

.2

.1

.1

.1

.1

.1

.6

.2

15.1

0.49

30

Feb.

0.3

*.7 

.8

.6

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.5

.2

*.l

.1

.2

.1

0

0

.1

.1

.2

.1

.2

.2

_

_

-

6.4

0.23

13

Mar.

0.2

.2

.1

.1

0

0

0

0

0

0

0

0

0

0

0

o

0

~1.1

.5

,5

.5

4.6

0.15

9.1

Apr.

0.5

.5 

.5

.5

*1

1.0

.3

.2

.2

^

.2

.5

.3

.3

.3

.3

.3

.3

1.1

1.6

.3

.3

.2

.2

.4

.4

.3

.4

1.1

1.6

-

15.2

0.51

30

May

~0.8

.3

*.3

.3

.2

.2

.2

.2

.2

.1

.1

.1

.2

.2

.1

.1

.1

.1

0

0

0

0

.3

0

0

0

0

0

0

*0

4.7

0.15

9.3

June

(*)

0

o

0

July

0

94 

356

*T54

7.4

f4

7.0

.4

0

0

0

0

o

o

0

0

0

0

9.0

.4

.4

.4

.3

*13

28

*117

35

67

47

f6

17

913.3

29.5

1,810

Aug.

f3

*1,970 

297

150

150

50

10

10

10

30

10

5

5

*30

165

*68

17

277

342

56

144

152

198

*35

*462

573

704

223

102

48

24

6,320

204

12,540

Sept.

7.3

3.0 

1.6

.7

*.7

~027

0

0

0

0

0

0

0

o

0

0

o

o

0

o

0

0

0

o

0

*o

0

0

0-

40.3

1.34

80

Calendar year 1950: Max - Mln - Mean - A<J-ft

Water year 1950-51: Max 1,970 Mln O Mean 2O.1 Ac-ft 14,530

Peak discharge (base, 3,5OO cfs). Aug. 2 (8:3O p.m.) 28,600 cfs (18.0 ft). 

* Discharge measurement made on this day.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights. 

Note. No gage-height record Nov. 15 to Dec. 3, Mar. 27 to Apr. S, July 21-23, Aug. 4-13; discharge 

estimated on basis of weathrer records and records for related stations.
426 GILA RIVER BASIN 

Gila River at Kelvin, Ariz.

Location. Lat 33°06'15", long. 110°58'45", in NWvNW^ sec. 12, T. 4 S., R. 13 E., on left

 bank at Kelvin, 1,000 ft downstream from Mineral Creek, 17 miles downstream from San 

Pedro River, and 19\ miles upstream from Ashurst-Hayden Dam. Auxiliary recorder on left 

bank, 900 ft upstream since May 27, 1951.

Drainage area. 18,000 sq mi of which 5,140 sq mi is below Coolidge Dam.

Kecords available.--January 1911 to September 1951.

Uage.--Water-stage recorder June 15 to Nov. 30, 1914, and since Sept. 1, 1915. Auxiliary

 recorder installed 900 ft upstream May 27, 1951. Datum of gage is 1,743.22 ft (1,745.02

ft for auxiliary gage) above mean sea level, datum of 1929, supplementary adjustment of

1949. Prior to June 15, 1914, and Dec. 1, 1914, to Aug. 31, 1915, staff gages at several

sites within two miles of present site at various datums. 

Average dls charge.--40 years (1911-51), 533 cfs (adjusted for storage in San Carlos Reservoir). 

Extremes.--Maximum discharge during year, 13,200 cfs Aug. 3 (gage height, 9.99 ft); minimum daily, 0.5 cfs June 17-21.

1911-51: Maximum discharge, about 132,000 cfs Jan. 20, 1916 (gage height, 19.5 ft),

from rating curve extended above slope-area measurement at 82,000 cfs; minimum daily,

that of June 17-21, 1951.

Maximum discharge since completion of Coolidge Dam, 42,800 cfs Aug. 8, 1930 (gage

height, 12.6 ft); minimum daily, that of June 17-21, 1951. 

Remarks.--Records good. Discharge measurements generally made three times a month. Large

diversions above station for irrigation, of which more than 90 percent are above Coolidge

Dam. About 61,000 acres irrigated, a considerable portion by pumping from ground water.

Flow regulated by San Carlos Reservoir (Coolidge Dam) since Nov. 15, 1928 (see p. 419);

no other regulation. San Pedro River contributes major portion of unregulated inflow.

Records of chemical analyses, water temperatures, and sediment loads of the water year

1951 are given in Water-Supply Paper 1200. 

Revisions (water years).--W 329: 1911. W 609: 1916(M). Vf 629: 1914-17. W 1119: 1913,

1915, 1917(M), 1921(M), 1922, 1923, 1927(M).

 Rating tables, water year 1950-51 (gage height, in feet,

and discharge, In cubic feet per second)

(Shifting-control method used Nov. 24 to Jan. 10, May 21 to July 3, 

July 18 to Aug. 3, Aug. 17-22, Sept. 4-20)

2.5 1.3

2.6 3.1

2.8 12.2

3.0 28

Oct. 1 to May 26

Aug. 3-5 

Aug. 26-28

3.3 70

3.6 142

4.0 300

4.5 615

May 27 to Aug. 2

Aug. 6-25 

Aug. 29 to Sept. 30

5.0 1,065

6.0 2,340

8.0 6,640

1.3 0.2

1.5 3.1

1.7 13

1.9 34

2.2 82

2.5 150

3.0 310

3.5 513

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

22

22

23

24

24

23

21

21

18

17

13

11

10

9.0

8.5

6.9

6.5

5.8

5.8

4.6

4.2

4.2

4.2

4.2

4.2

3.1

3.9

3.1

2.9

4.6

356.7

11.5

708

Nov.

4.6

3.9

3.9

5.0

5.4

4.2

3.9

4.6

5.4

4.2

3.5

5.0

6.1

sTa

5.8

5.8

5.8

5.4

6.1

5.8

5.0

4.2

4.6

5.0

5.0

5.4

5.8

5.4

6.1

6.1

152.8

5.09

303

Dec.

6.5

6.9

7.4

6.5

6.1

6.1

7.4

7.4

6.9

8.5

12

12

12

13

14

14

14

14

13

12

11

12

12

11

12

12

14

13

12

12

13

333.7

10.8

662

Jan.

15

14

T6

15

15

14

17

23

32

40

49

65

67

68

70

70

74

76

80

80

78

78

78

78

76

76

76

76

76

95

100

1,787

57.6

3,540

Feb.

42

78

82

84

88

107

107

88

88

88

88

88

88

88

88

86

86

86

90

90

92

95

95

97

97

97

97

97

_

-

2,497

89.2

4,950

Mar.

97

104

104

102

104

104

102

104

104

104

102

100

100

100

97

100

97

100

100

102

102

102

102

100

100

102

138

109

109

122

122

3,235

104

6,420

Apr.

128

125

122

122

129

162

134

109

95

86

80

76

72

68

67

65

63

62

92

195

100

102

95

86

76

68

63

58

67

76

2,843

94.8

5,640

May

74

65

58

55

55

53

50

49

47

47

40

36

31

27

30

25

21

18

16

14

12

9.6

8.5

6.9

5.8

4.2

3.1

2.5

1.6

1.4

1_,_0

867.6

28.0

1,720

June

1.0

1.0

1.0

1.0

1.0

.9

.8

.8

.8

.8

.7

.7

.6

.6

.6

.6

.5

.5

.5

.5

.5

.6

.7

.6

.6

.6

.6

,7

.8

.7

-

21.3

0.71

42

July

0.7

.7

.7

101

95

24

6.5

2.7

.8

.7

.7

.7

.7

^6

7.7

140

~24 367

22

38

7.6

2.3

1.0

142

28

17

62

118

69

64

28

1,373.1

44.3

2,720

Aug.

57

246

6,570

711

293

202

61

114

181

181

178

190

184

178

181

297

224

178

378

380

203

139

142

196

173

404

2,030

1,160

417

161

77

15,886

512

31,510

Sept.

47

32

73

199

208

214

234

227

250

274

281

288

271

240

199

148

135

138

104

69

50

35

27

20

16

13

11

7.0

10

11

-

3,831.0

128

7,600

Calendar year 1950: Max 2,800 Mln 2.9 Mean 215 Ao-ft 155,600

Water year 1950-51: Max 6,370 Mln 0.5 Mean 90.9 Ac-ft 65,820

Peak discharge (base. 4.000 efs). Aug. 5 (10:00 a.m.) 15.200 efs (9.99 ft).
GILA RIVER BASIN 

Gila River at Ashurst-Hayden Dam, near Florence, Ariz.

Location. Lat 33°06'00", long. 111°14 I 50", in SW^NWi sec. 8, T. 4 S., R. 11 E., on left 

oam at Ashurst-Hayden Dam, 9 miles northeast of Florence.

Drainage area. 18,300 sq mi, approximately.

Keeoras available. July 1923 to September 1951 (head on crest of dam only). Records of 

montniy diversions to Florence-Casa Grande Canal available January 1928 to September 

1951.

Gage. Water-stage recorder since Apr. 12, 1932. Prior to Apr. 12, 1932, chain gage at 

same site and datum read two or more times daily. Permanent crest of dam is 1,562.6 ft 

above mean sea level, datum of 1929. Crest height, 1.7 ft higher during the year by 

use of flashboards.

Water-stage recorder and Parshall flume used since Jan. 12, 1937, to obtain records 

of diversions, located on Florence-Casa Grande Canal, 2.6 miles downstream at China Wash. 

Prior to Jan. 12, 1937, water-stage recorder 900 ft downstream from Ashurst-Hayden dam.

Extremes. Maximum head on dam during year 3.2 ft July 27; no flow over dam greater part 

or year.

1923-51: Maximum head on dam, 8.0 ft Sept. 28, 1926; no flow over dam greater part 

of each year.

Remarks . Records show daily mean head on dam and monthly diversions to Florence-Casa 

Grande Canal. Mean head is often not representative of flow passing dam because of 

extensive sluicing. Florence-Casa Grande Canal diverts water at dam for irrigation' of 

land under 100,000-acre San Carlos project. Canal records adjusted for intervening 

sluicing and pumping (but not natural, losses) , to show water available at the dam, except 

for flow sluiced through the dam or passed over the dam during times of flood runoff. 

Flow regulated at Coolidge Dam except for intervening tributary inflow mostly from San 

Pedro River. Diversions above station for irrigation of about 60,000 acres. A considerable portion are by pumping from ground water.

Cuoperat Ion. --Records collated and prepared ji cooperation with Office of Indian Affairs.

Daily mean head, in feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct. Nov. Dec. 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

0

0

0

.08

0

Feb.

0

0

0

0

0

0

.01

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

-

-

"

Mar. Apr.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.05

0

eO

0

0

0

0

0

0

0

0

-

May June July

0

0

0

0

.02

0

0

0

0

0

0

0

0

0

0

0

.09

0

0

0

0

0

0

eO

0

0

.16

0

0

0

0

Aug.

0

eO

1.08

.08

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.13

.18

.14

0

0

0

Sept.

e Flow over crest of dam for short time, but mean head for day was less than 0.01 foot. 

Note. Water below crest of dam during months left blank and on days shown by zero.

Monthly diversions to Plorence-Casa Grande Canal, water year October 1950 to September 1951

Month

Calendar year 1950....

July....................

September. ..............

Water year 1950-51....

Cfs-days

94.8 

0 

0

59,195.2

1,547 

2.189 

2,605 

2,554 

676 

0 

878 

6,766 

5,195

20,302.8

Discharge, in cubic feet per second

Maximum

14 

0 

0

1,030

115 

102 

125 

187 

72 

0 

359 

775 

226

775

Minimum

0 

0 

0

0

0 

51 

76 

54 

0 

0 

0 

13 

8

0

Mean

3.06 

0 

0

162

45.4 

78.2 

84.0 

85.1 

21.8 

0 

28.5 

218 

106

55.6

Diversions 

acre-feet

188 

0 

0

117,400

2 670 

4 540 

5 170 

5 070 

1 340 

0 

1 740 

13 420 

6 530

40,270

Water sluiced 

above flume 

(aore-feet)t

0 

0 

0

1,570

20 

18 

24 

23 

2.4 

0 

83 

296 

41

507

t 'Included in first four columns of table.
428 GILA RIVER BASIN

Queen Creek at Whitlow dam site, near Superior, Ariz.

Location. Lat 33°18'10", long. 111°17'30", in sec. 36, T. 1 S., R. 10 E., on left bank 

at Whitlow dam site, 2j miles upstream from Whitlow Canyon, 4 miles northeast of 

Florence Junction, and 10 miles west of Superior.

Drainage area. 143 sq. mi.

Records available.--January 1896 to August 1899, February 1915 to September 1920 (gage 

heights only .February to September 1915), May 1948 to September 1951.

Gage.--Water-stage recorder since May 1, 1948. Datum of gage is 2,048.96 ft above mean 

sea level, datum of 1929, supplementary adjustment of 1949. Staff gages, Jan. 25, 

1896, to Aug. 11, 1899, at present site, and Feb. 14, 1915, to Sept. 30, 1920, at site 

about one mile downstream, at different datums.

Extremes.--Maximum discharge during year, 1,510 cfs Aug. 3 (gage height, 5.51 ft); no 

flow most of year.

1915-20, 1948-51: Maximum discharge, 10,000 cfs Aug. 1, 1919 (gage height, 11.0 

ft, datum then in use, from floodmark) from rating curve extended above 600 cfs on 

basis of slope-area determination of peak flow; no flow at times in each year.

A peak discharge of 13,200 cfs occurred Aug. 6, 1939 (by slope-area determination 

of peak flow). Floodraarks indicate a previous stage ij ft higher.

Remarks.--Records fair. Record shows water available at Whitlow dam site. Small diversions above station for irrigation, municipal and mining uses, mostly by pumping from 

ground-water basin.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

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

0

0

Nov.

0

0

0

Dec.

0

0

0

Jan.

O

0

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

o

0

0

0

0

0

0

0

0 

0

0

0

*170 -27

197

6.4

391

Feb.

0

0

0

Mar.

0

0

0

Apr.

0

0

0

May

0

0

0

June

0

0

0

July

0

0

0

0

0

0

0

0

O

O

0

0

0

0

2.5

0

0

0

.5

0

0

0

0

0

0

0 

~2.8 25

0

0

0

3O.8

0.99

61

Aug.

0

4.3

105

0

0

0

0

0

0

0

O

0

o

0

0

0

0

0

0

o

o

0

0

0

0

si82

7.5

.2

0

447.0

14.4

887

Sept.

0

0

0

Calendar year 1950: Max 455 Mln 0 Mean 2.1 Ac-ft 1,490

Water year 1950-50: Max 170 Mln 0 Mean 1.85 Ao-ft 1,340

Peak discharge (base. 500 ofs).--Jan. 31 (2:30 p.m.) 840 flfs (4.70 ft); July 27 (8:00 p.m.) 664 cfs 

(4.59 ft)j Aug. 3 (1:30 a.m.) 1,510 cfs (5.51 ft); Aug. 26 (9:30 p.m.) 1,320 (Jfs (5.30 ft). 

* Two discharge measurements made on this day.
GILA RIVER BASIN 429

Gila River near Laveen, Ariz.

Location. Lat 33 0 15', long. 112°10', in SW^NWi sec. 16, T. 2 S., R. 2 E., on Gila River 

Indian Reservation, on left abutment of highway bridge, 1^ miles south of Komatke, 

8 miles south of Laveen, and 8 miles upstream from Santa Cruz River.

Drainage area .--20 ,200 sq mi, approximately.

Records available. January 1940 to September 1946, December 1947 to September 1951.

Gage.--Water-stage recorder above concrete diversion dam on main channel since Jan. 1, 

T940, and auxiliary recorder on overflow channel at highway bridge a quarter of a mile 

south since Mar. 18, 1942. Datum of principal gage is 1,018.90 ft above mean sea level, 

datum of 1929, supplementary adjustment of 1949, and datum of auxiliary gage is 0.23 ft 

lower. Staff gage at site of auxiliary gage Oct. 16, 1940, to Mar. 17, 1942.

Average discharge.--9 years (1940-46, 1948-51), 36.2 cfs.

Extremes. Maximum discharge during year, 1,210 cfs Aug. 29 (gage height, 7.29 ft); no flow 

ror many days.

1940-51: Maximum discharge, 11,900 cfs Jan. 2, 1941 (gage height, 9.33 ft); no flow 

at times in many years.

Remarks. Records fair except those for period of no gage-height record, which are poor. 

Records include flow over dam, through sluice gate in dam, and in overflow channel, but 

do not include flow in Cooperative Canal, which diverts at dam (see table below). Overflow channel had flow Aug. 3-5, 27-30 (total runoff, 926 acre-ft). Discharge measurements generally made 2 or 3 times a month with additional measurements during periods of 

high water. Large diversions above station for irrigation. Plow partly regulated by 

storage in San Carlos Reservoir (see p. 419).

Discharge measurements of Cooperative Canal, 1950-51

Date

1950

Oct. 19

Mov. 8

21

30

Dec. 14

21

1951

Jan. 10

Discharge

4.31

4.99

5.93

10.3

5.97

6.40

5.28

Date

Feb. 6

20

Mar. 5

15

27

Apr. 6

18

May 8

18

Discharge

10.4

8.63

8.06

0

8.77

**6

6.89

5.38

4.30

Date

May 28

June 20

28

July 9

19

28

29

31

Aug. 3

Discharge

4.25

3.06

2.52

2.95

**.Z

34.4

**18

4.09

3.46

Date

Aug. 4

5

8

13

28

29

Sept. 2

10

25

Discharge

**35

27.2

6.83

6.74

**5

**6

**.5

1.82

6.91

** Field estimate of flow.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

' 

aa

a

0

TJ

0

0

0

.3

0

0

0

0

0

0

0

64.3

2.07

128

Nov.

0

15

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.9

1

T

.9

.6

.6

-

5.1

0.17

10

Dec.

0

.6

0

.2

3

1

1

1

1

2

.9

3

2

2

2

2

2

2

1

1

2

3

4

f

4

4

4

4

4

4

4

68.7

2.22

136

Jan.

2

2

2

2

2

2

3

3

3

3

3

3

3

3

4

4

4

4

1

1

1

1

1

.2

0

0

0

0

0

.1

11

74.3

2.40

147

Feb.

7

.3

.1

0

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

.2

.2

.3

.3

.4

_

_

-

9.1

0.32

18

Mar.

0.4

.5

.6

.6

.7

.8

.8

.9

.9

1

1

1

1

3

1C)

9

9

9

9

4

.8

.6

.2

TZ

.2

.2

.2

.2

.2

.2

.2

66.4

2.14

132

Apr.

 73" 0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.4

7J

.4

.3

.4

.4

.4

.4

.4

.4

8.1

0.27

16

May

0.4

.3

.3

.2

7Z

.2

.2

.2

.2

.2

.3

.2

.2

.3

.3

.3

.3

.2

.2

.3

.2

.2

.3

.3

.3

.3

.3

.4

.4

.4

.5

8.6

0.28

17

June

0.5

.5

.5

.6

.5

.6

.6

.6

.6

.6

.5

.7

77

.6

.6

.6

.6

.6

.6

.6

.5

.5

.4

.4

.3

.2

7?

.2

.2

.2

-

14.8

0.49

29

July

0.1

.1

.1

.1

.1

.1

.1

.1

.1

1

3

3

3

3

3

3

3

3

4

3

3

3

3

3

3

3

3

^m225

0

15

356.9

11.5

708

Aug.

0

15

21

808

480

.1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

53

752

838

2f7

19

3,198.1

103

6,340

Sept.

-S13

13

13

13

13

9

9

9

9

13

9

9

9

9

9

4

0

15

0

0

0

.2

.3

.4

.7

2

3

3

2

-

183.6

6.12

364

Calendar year 1950: Max 1,120 Mln 0 Mean 16.7 Ao-ft 12,100

Water year 1950-51: Max 838 Mln o Mean 11. 1 Ao-ft 8,040
430 GILA RIVER BASIN

Santa Cruz River near Lochiel, Ariz.

Location.--Lat 31°21>30", long. 110°35'40", in SWv sec. 11, T. 24 S., R. 17 E., unsurveyed, 

 near left bank on downstream side of pier of bridge on county road on southern border of

Spanish land grant of San Rafael, ij miles upstream from international boundary and

Zj miles northeast of Lochiel.

Drainage area. 83 sq. mi.

Records available. January 1949 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 4,620 ft (from topographic map).

Extremes. Maximum discharge during year, 2,560 cfs Aug. 2 (gage height, 5.65 ft); no flow 

for many days.

1949-51: Maximum discharge, 4,520 cfs July 30, 1950 (gage height, 6.75 ft), from 

rating curve extended above 40 cfs on basis of slope-area determination of peak flow; no 

flow for many days.

Remarks.--Records good prior to July 20, fair thereafter, except for periods of fragmentary 

or no gage-height record, which are poor.

Rating table, water year 1950-51 (gage height. In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Mar. 10 to Apr. 19, July 23 to Aug. 21)

1.0

1.1

1.2

1.3

1.4

.2 

1.4 

4.4

9.1

1.5 

1.7 

2.1 

2.5 

3.0

16

34

87

158

292

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

2.9

2.6

3.5

3.5

3.5

3.8

4.1

378

3.8

4.1

4.1

3.8

3.8

3.2

2.6

2.3

2.3

2.3

2.0

2.0

1.7

1.4

1.2

1.0

.9

.8

.9

*.9

.9

i£

76.9

2.48

153

Nov.

0.6

.6

.6

.4

.6

.6

.7

74

.3

i£

.2

.3

.3

.3

.3

.4

.6

.6

.6

.4

.6

.6

.6

.6

.7

.7

.7

.7

.7

.6

-

15.5

0.52

31

Dec.

0.7

.7

*.8

75" .9

.7

.6

.4

.7

.6

.3

.6

.4

.2

7?

.2

.2

.2

.2

.2

.2

.2

.2

.2

.4

.6

.3

*.4

.6

.4

.8

14.0

0.45

28

Jan.'

1.7

l!o

.9

.9

.9

.7

.6

.7

.6

.6

1.3

1.2

.7

.6

.6

.4

.4

.6

.6

.4

.3

7T

.4

.6

.6

.6

.7

*.7

1.0

.8

22.7

0.73

45

Feb.

0.8 ~rr

.6

.6

.7

.7

.7

.7

.7

.7

.4

.3

.3

.3

.2

.3

.3

.2

.2

.2

.17T.1

.2

.4

*.4

.2

.2

_

_

-

11.3

0.40

22

Mar.

0.1

. 2

.1

.1

.1

.1

.1

.2

.6

.6

.3

.2

.3

.4

.3

.3

.3

.2

.2

.2

.1

.1

.1

.2

.3

1.0

'.4

.2

.2

.2

8.4

0.27

17

Apr.

0.2

.2

.2

*.3

.2'

.2

.2

.2

.3

.3

.2

.2

.1TT

.2

.2

.2

.2

.4

1.0

.6

.4

.7

.2

.2

.2

.1

.1

.4

2.0

-

10.0

0.33

20

May

0.8 "TT

*.4

.4

.4

.6

.6

.2

.1

rr

.1.1

0

0

0

0

0

.1

.1.1

.1.1

0

0

0

0

.1.1

0

0

0

5.1

0.16

10

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

0

0

0

-

0

0

0

July

0

7J

0

0

2.1

.1

0

0

0

0

0

.4

.4

0

.7

.2

.1

.1

.1

.1

.1

1.0

34.0

3.6

3.8

*.3

31.0 irsrr

a2

al

17

100.6

3.24

200

Aug.

11

291

fBT

*f2.3

.8

.7

.7

.6 ITT

3.6

3.8

4.1

4.4

5.3

8.7

4.1

4.1

5.3

*3.6

3.8

*4.6

*3.7

.9

.9

5.3

6.3

12

15

6.8

*6.8

7.2

493.6

15.9

979

Sept.

7.7

8.2

7.7

8.2

8.2

8.2

8.6 srg8.2

7.7

7.7

6.8

5.8

5.3

4.4

4.1

3.8

2.9

2.3

2.0

*2.3

2.3

1.4

1.4

1.0

79" .6

.9

.9

2.0

-

142.0

5.03

282

Calendar year 1950 : Max 552 Mln 0 Mean 8.37 Ac-ft 6,060

Water year 1950-51 : Max 291 Mln 0 Mean 2.49 Ac-ft 1,790

Peak discharge (base. 1,000 cfs). Aug. 2 (8 p.m.) 2,560 cfs (5.65 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records for stations at Nogales and on 

Sonoita Creek near Patagonia.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 431

Santa Cruz River near Nogales, Ariz.

Location. Lat 31°20'40", long. 110°51'05", in NW£ sec. T. 24 S. , R. 15 E. , unsurveyed,

 in Spanish land grant of Buena Vista, on left bank three-quarters of a mile downstream 

from international boundary, 5-J- miles upstream from Yerba Buena dam site, and 5i miles 

east of Nogales.

Drainage area. 542 sq mi, of which 357 sq mi is in Mexico.

Records available.--March to November 1907 and April 1909 to December 1912 (discharge measurements ana fragmentary gage-height record), January 1913 to June 1922 (October 1915 

to September 1915, monthly discharge only), May 1930 to December 1933, July 1935 to September 1951.

Gage.--Water-stage recorder. Altitude of gage is about 3,700 ft (from topographic map).

 Prior to June 30, 1922, several staff gages and water-stage recorders at various datums 

located at or within three-quarters of a mile from Yerba Buena dam site, 5-j miles downstream.

Average discharge.--19 years (1930-33, 1935-51), 17.9 cfs.

.Extremes .--Maximum discharge during year, 3,040 cfs Aug. 3 (gage height, 7.95 ft); minimum

 daily, 0.1 cfs June 28 to July 4.

1930-51: Maximum discharge, 12,000 cfs Aug. 31, 1935 (gage height, 12.3 ft), from 

rating curve extended above 2,300 cfs on basis of slope-area determinations at gage 

heights 9.5 and 10.9 ft; no flow for several days or parts of days in most years.

Revisions.--The figures of maximum discharge for some water years have been revised, 

as snown in the following table. They supersede those published in the water-supply 

papers indicated.

Water-Supply 

Paper

704. ........

719. ........

734. ........

809....... ..

829. ........

Water 

year

1930

1931

1932

1934

1936

1937

Date

July 8

Aiio- Q

Aug. 16

Gage height 

(feet)

8.55

7.45

9.5

9.0

7.34

6.80

Discharge 

(cfs)

5,400

4,150

6,400

5,900

4,050

2,400

t Date unknown.

Remarks.--Records good. Diversions for irrigation of about 2,200 acres above station,

almost entirely in Mexico. No regulation above station. 

Revisions (water years). W 959: 1935(M). Revised figures of daily discharge for the

water year iaib ana monthly discharge only for the water year 1916 are given herein.

They supersede those published in Water-Supply Papers 409 and 439.

Discharge, in cubic feet per second, 1914-15, 1915-16, 1950-51 

1914-15

Day

1

2

3

4

5

6

7

8

9

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

6

6

4

4

4

4

4

4

4

4

2

2

1

1

1

2

2

2

2

2

2

2

2

Z

6

6

6

28

T

1

124

4.0

246

Nov.

1

T

1

l

l

l

42

6

4

4

4

4

4

4

2

2

6

6

9

24

24

24

24

24

24

30

30

16

1

1

325

10.8

643

Dec.

1

T

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

26

_

-

_

_

_

_

160

160

160

160

160

160 

160

_

-

-

Jan.

160

160

160

160

160

160

160

160

160

160

160

130

130

130

107

107

107

107

8989"

89

89

110

130

130

130

130

130

188

3,000 

1,200

8,082

261

16,000

Feb.

400

310

290

290

275

275

220

220

180

180

288

330

185

165

150

130

120

115

110

110

220

185

160

140

130

115

105

100

_

-

5,498

196

10,910

Mar.

95

90

90

150

150

140

130

125

125

120

120

180

180

150

140

120

115

110

95

90

85

80

70

90

70

65

65

65

65

60

6TJ

3,290

106

6,530

Apr.

ED- 60

55

50

50

50

50

50

50

45

45

45

45

45

45

40

35

35

25

25

25

2020-

20

20

20

20

20

20

20

1,110

37.0

2,200

May

20

2U

20

20

20

20

20

20

15

15

15

15

15

15

15

15

12

12

12

12

12

12

12

10

9

9

9

9

9

9

G_

434

14.0

861

June

B- 6

5

5

5

5

5

5

5

5

5

5

5

5

3

3

3

3

3

3

3

3

3

3

1

0

1

1

1

1

107

3.6

212

July

1

1

1

00"

0

0

0

0

0

35

10

2

2

15

2

255

295

215

125

65

35

30

27

25

23

760 215"

50

35 

30

2,254

72.7

4,470

Aug.

27

25

23

21

295

125

50

30

25

22

20

18

17

85

60

50

40

35

30

25

20

17

14

12

10

8

7

6

5

4 

4

1,130

36.4

2,240

Sept.

4

7

4

4

4

4

2

4

4

4

4

4

4

4

4

4

4

4

4

2

1

1

2

2

1

1

1

1

1

1

86

2.9

171

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft
GILA RIVER BASIN

Discharge, in cubic feet per second, of Santa Cruz River near Nogale 

1914-15, 1915-16, 1950-51 Continued 

1915-16

Month

December ......................

April. ........................

Cf 3-days

657

729

Maximum

60

100

Minimum

0

Mean

21.2

Runoff in 

acre -feet

1,300

301

99

Note.--Daily discharge for water year 1916 not sufficiently accurate for publication.

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 "77

.7

1.3

175

.7

.7

.7

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

.6

*.6

.6

.6

20.2

.65

40

Nov.

0.7

.7

.7

.6

.6

.6

.6

.6

.5

75

.6

.7

.7

1.0 "77

.6

.6

.7

.7

.7

.6

.7

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

-

22.4

.75

44

Dec.

1.3

T7S

*1.5

2.1

2.4

2.7

2.9

2.9

3.2

3.5

4.6

5.2 T76-

5.2

5.2

4.6

4.6

4.0

4.6

4.0

4.0

5.2

5.2

5.2

5.2

.6

.6

* .6

.6

.6

.0

122.4

3.95

243

Jan.

6.2

5.7

4.6

3.5

5.2

3.2

3.2

3.2

3.5

4.6

4.6

8.4

9.0

67?

6.2

6.2

5.7

6.8

6.2

5.7

5.7

5.7

5.7

5.7

5.7

5.2

5.2

*4.6

4.6

6.8

6.8

167.6

5.41

332

Feb.

5.2

4.0

3.5

3.2

2 A 9

2.9

3.2

2.9

2.9

3.2

3.2

3.5

4.0

3.5

4.0

5.2

5.7

6.2

6.8

STff

6.8

4.0

3.5

4.0

5.2

*4.6

3.2

3.2

_

-

117.3

4.19

233

Mar.

2.9

2.7

2.7

2.7

2.9

2.9

2.9

3.2

3.5

3.5

3.2

2.9

2.9

2.4

2.4

2.4

2.4

2.1

1.8

771

2.7

3.2

3.5

3.5

4.0

4.0

3.2

2.9

2.7

2.7

2.7

89.9

2.90

178

Apr.

2.7

2.4

2,4

*2.7

3.E

4.6

5.2

5.2

4.0

5.5

3.2

2.9

2.1

1.8

1.8

1.8

1.8

1.8

6.7

3.2

2.4

1.5

T75

1.5

2.1

2.1

2.4

2.4

4.0

9.8

-

92.7

3.09

184

May

5.2

37?

*2.4

1.8

1.8

2.1

1.8

1.8

1.5

1.3

1.3

1.0

,7

1.0

1.0

.7

.6

.5

.5

.5

.4

.5

.5

.6

.5

.4

71

.4

.4

.4

.5

35.7

1.15

71

June

0.5

.5

.4

.4

*.4

.4

.4

.3

.3

.4

.675-

.6

.6

.6

.5

.5

.5

.4

.4

.3

.4

.3

.3

.3

*.2

.2

.1

7T

.1

-

11.6

0.39

23

July

0.1

. 1

.1

.1

40

.8

.5

.4

.4

.4

42

1.7

.6

.5

18

*37

.5

.4

.5

.4

.4

64

20

4.0

8.6

*52

2.1

~IS 185

2.4

1.5

494.5

16.0

981

Aug.

1.0

254

*653 ~2T

5.2

3.2

2.1

1.3

1.3

1.0

2.3

1.9

1.3

1.3

1.0

.6

.7

1.0

*.7

39

*2.3

.475"

.4

.4

28

6.2

146

46

6.4

1.3

1,233.8

39.8

2,450

Sept.

~rs 0.7

.6

.5

.5

.6

.6

.6

.6

.5

.5

.5

.e

.5

.4

.4

.5

.5

.5

.5

*.S

.4

.5

.5

.4

.4

.373-

.6

.6

-

15.2

0.51

30

Calendar year 1950: Max 1,470 Mln 0.5 Mean 27.0 Ac-ft 19,570

Water year 1950-51: Max 653 Min 0.1 Mean 6.64 Ac-ft 4,810

Peak discharge (base, 2,000 efs).--July 28 (4 p.m.) 2,840 cfs (7.85 ft)j Aug. 3 (4:30 a.m.) 3,040 

cfs (7.95 ft).

* Discharge measurement made on this day.
GILA RIVER BASIN 433

Sonoita Creek near Patagonia, Ariz.

Location. Lat 31°30'00", long. 110°49'00", in SE&3W£ sec. 21, T. 22 S., R. 15 E., on left 

aoutment of former railroad bridge, 5 miles downstream from Patagonia.

Drainage area. 210 sq mi.

Records available.--June 1930 to December 1933, July 1935 to September 1951.

Gage. Water-stage recorder. Datum of gage is 3,818.61 ft above mean sea level, datum of 

T929. Prior to Mar. 6, 1940, at site 2,700 ft downstream at datum 18.00 ft lower.

Average discharge.--19 years (1930-33, 1935-51), 6.99 cfs.

Extremes. Maximum discharge during year, 5,030 cfs Aug. 2 (gage height, 8.65 ft); no flow 

ror parts of many days.

1930-51: Maximum discharge, 14,000 cfs Sept. 30, 1946 (gage height, 13.0 ft), from 

rating curve extended above 1,500 cfs on basis of slope-area determination of peak flow; 

no flow for all or parts of several days during summer of each year since 1940 when 

station was moved to present site.

Revisions.--The figures of maximum discharge for some water years have been revised 

as shown in the following table. They supersede those published in the water-supply 

papers indicated.

Water-Supply 

Paper

789. .........

829.. ........

879. .........

Water 

year

1937

1939

Date

Aug. 8

Gage height 

(feet)

9.8

8.70

8.4

Discharge 

( second-feet)

3,600

3,300

Remarks. Records good except those for periods of fragmentary gage-height record, which 

are poor. Several small diversions above station for irrigation and mining.

Revisions (water years). W 1059: 

lyay, nas oeen revised to 2,80( 

879.

1934(M). The supplemental peak discharge for Aug. 2, 

cfs, superseding figure published in Water-Supply Paper

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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 T74-

1.4

1.3

1.2

1.2

1.2

1.1

T7T

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.2

1.1

1.2

1.2

1.2

1.2

1.3

1.1

1.1

*1.3

1.4

1.4

37.0

1.19

73

Nov.

1.6

T7T

1.7

1.7

1.7

1.7

2.0

2.0

2.0

2.1

2.2

2.2

2.2

2.2

2.2

2.2

2.3 ^72"

2.3

2.2

2.2

2.2

2.2

2.2

2.3

2.3

2.3

2.3

2.3

2.3

-

63.0

2.10

125

Dec.

2.3 Z75"

*2.5

2.5

2.5

2.8

3.4

3.6

3.8

4.0

4.0

4.0

3.8

3.8

3.6

3.6

4.0

3.8

3.6

3.6

3.6

3.6

4.0

4.2

4.2

4.6

4.9

*5.2

4^2

4.2

115.3

3.72

229

Jan.

5.2

5.2

5.2

4.9

4.9

4.6

4.6

4.4

4!9

4.9

5.8

6.0

BTS

4.9

4.6

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.6

4.9

4.9

4.6

*4.6

5.5

5.8

5.8

155.5

5.02

308

Feb.

5.5

5.5

5.5

5.2

5.2

5.2

5.2

5.2

4.9

4.2

3.6

3 < g

3.8

4.2

4.9

5.2

5.2

5.2

5.5

4.6

4.4

4.6

4.9

4.9

5.5

*5.8

6.0

5.8

-

-

-

139.3

4.98

276

Map.

5.8

5.8

5.8

5.5

5.2

4.9 T79-

5.2

5.2

5.5

5.5

5.5

5.5

5.5

5.5

5.5

5.8

5.8

5.5

5.5

5.5

5.5

5.5

5.5

6.0

5.8

5.8

5.5

5.5

5.5

5.5

171.0

5.52

339

Apr.

5.5

5.5

5.2

*5.5

5.5

6.0

5.8

5.2

5.2

5.2

5.2

4.9

4.9

4.4 ~ETS

4.4

4.6

4.6

6.0

5.8

5.5

4.9

4.6

4.6

4.9

4.6

4.6

4.6

5.5

6.6

-

154.2

5.14

306

May

6.0

4,9

*4.

4.

4.

3.

3.

3.

3.

3.

3.

3.

3.

3.

2.

1.

1.

1.6

1.3

1.3

1.2

2.1

2.1

2.0

1.7

1.3

1.3

1.1

1.2

.9

_._8j

SI. 3

2.62

161

June

0.5

.4

TT

.4

*.5

.5

.5

.6

.6

.6

.5

.6

.6

.7

.8

.8

.8

.9

.8

.7

.8

1.0 ~Tff

.8

1.0

.6

*.6

.6

.7

.5

-

19.6

.65

39

July

0.6

.4

.4

.3

.5

.5

.4

.3

.3

±L

.3

.3

.3

.2

.5

*.5

.3

.3

.3

.3

.2

.4

1.3

1.6

1.3

*1.1 i!o

6.3

13

2 , 6

2.1

38.1

1.23

76

Aug.

4.0

526 "49

f5.2

22

3.6

2.2

2.0

1.8

1.8

1.7

1.6

T76

49

18

f!3

f3.6

f2.3

*4.1

25

*6.6

3.8

3.8

3.8

7.3

6.0

7.5

12

9.1

*4.3

3.6

805.3

26.0

1,600

Sept.

3.2

4.4

4.0

3.5

2.5

96"" B". 9

5.5

4.9

4.4

4.0

3.8

3.4

3.0

2.6

2.5

2.1

1.8

1.7

1.4

*1.4

1.3

1.1

1.1

1.1

1.0

1.0

.9 179-

1.7

-

174.1

5.80

345

Calendar year 1950: Max 1,480 Mln 0 Mean 12.3 Ac-ft 8,&80

Water year 1950-51; Max 526 Mln .2 Mean 5.35 Ac-ft 3,880

Peak discharge (base, 1,200 cfs). Aug. 2 (12:30 a.m.) 5,030 cfs (8.65 ft); Aug. 14 (7:30 p.m.)

1,290 cfs (6.40 ftj; Sept. 6 (5 p.m.) 2,200 cfs (6.97 ft). 

* Discharge measurement made on this day.
434 GILA RIVER BASIN

Santa Cruz River at Tucson, Ariz.

Location. Lat 32°13'15", long. 110°58'50", in NE^NEir sec - 14, T. 14 S., R. 13 E., on 

downstream side of pier of Congress Street Bridge in Tucson.

Drainage area. 2,190 sq mi, approximately, of which 403 sq mi is in Mexico.

Records available . October 1905 to September 1951. Prior to October 1917 daily discharge 

record fragmentary; monthly discharge frequently estimated from partial record.

Gage. Water-stage recorder since Nov. 27, 1929. Datum of gage is 2,327.16 ft above mean 

sea level, datum of 1929. Prior to Nov. 27, 1929, staff gage or reference points for 

measuring to water surface at various places on bridge (former bridge prior to Sept. 7, 

1916) at various daturas.

Average discharge. 46 years (1905-51), 21.5 cfs; median of yearly mean discharges, 16 cfs.

Extremes. Maximum discharge during year, 5,020 cfs Aug. 2 (gage height, 6.51 ft); no flow 

during most of year.

1905-51: Maximum discharge, about 15,000 cfs Dec. 23, 1914, from rating curve extended above 9,000 cfs; no flow during most of each year.

Remarks. Records good. Large diversions above station, mostly by pumping from ground 

water, for irrigation of about 2,200 acres in Mexico and about 18,000 acres in the 

United States, and small diversions for municipal supply and mining.

Revisions (water years). W 859: 1915(M).

Rating table, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used July 28, Aug. 1, 

16-21, 26-28, Sept. 7, 8)

1.3

1.4

1.5 

1.7 

2.0

0 

2.5

2.3

2.6 

3.0 

4.0 

5.0

164

293

510

1,290

2,360

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2 

3

4

5

6

7

8

9

10

11

12

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

0

0

Apr.

0

tf 

0

0

0

.3

0

0

0

0

0

0

0

0

0

0

0

0

14

0

0

0

0

0

0

0

0

0

*.l

-

16.4

.55

33

May

0

3

0

June

0

0

0

July

0

tf 

0

0

0

0

0

0

0

0

0

*68

1

0

*58

*195

*123

0

0

0

0

0

.5

19

2

17

*344

T

23

4

0

855.5

27.6

1,700

Aug.

2-5

*1,750 

*512

*58

6

212

1

0

tf

0

0

0

0

23

*89

10

.1

13

4

15

1

0

0

0

0

4

3

1

0

0

0

2,707.1

87.3

5,370

Sept.

0

tf 

0

0

0

0

622"

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

64

2.1

127

Calendar year 1950: Max 3,120 Mln 0 Mean 39.9 Ac-ft 28,880

Water year 1950-51: Max 1,730 Mln 0 Mean 9.98 Ac-ft 7,230

Peak discharge (base, 1.700 efs). July 16 (11 p.m.) 2,300 cfs (5.20 ft)j July 27 (10 a.m.) 1,900 

cfs 14.70 ft;j Aug. 2 (1:30 p.m.) 5,020 cfs (6.51 ft).

* Discharge measurement made on this day. In addition 23 field estimates of observations of no 

flow were made during July and August.
GILA RIVER BASIN 435

Tuoson Arroyo at Vine Avenue, Tucson, Ariz.

Location. Lat 32°13'05", long. 110°57 I 00", in SW&JEi sec. 18, T. 14 S., R. 14 E,, on 

rignt bank at Vine Avenue, a quarter mile downstream from Arroyo Chioo and 2-j miles 

upstream from mouth.

Drainage area. 21.5 sq mi.

Records available. June 1944 to September 1951.

Gage. Water-stage recorder and concrete control. Datum of ge is 2,411.9 ft above mean

sea level (city of Tucson bench mark).

Average discharge. 7 years, 0.65 cfs.

Extremes. Maximum discharge during year, 676 cfs Aug. 2 (gage height, 6.43 ft); no flow 

during most of year.

1944-51: Maximum discharge, 4,100 cfs July 24, 1948 (gage height, 9.9 ft), by slopearea method; no flow during most of each year.

Remarks . Records good.

Rating table, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

3.0

3.1

3.2

0.2 

1.5 

4.9

3.3

3.6 

4.C

9.6

33

82

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

0

0

Apr.

O0~

0

0

0

0

0

0

0

0

0

0

O

0

0

0

0

0

17 ~Z.8

0

0

O

0

0

0

0

0

0

*1.0

-

20.8

0.69

41

May

0

0

0

June

0

0

0

July

0

TJ

O

0

0

0

0

0

0

0

0

0

0

0

9.5

.2

0

0

0

0

0

0

.1

0

6.2

1.0

0

0

0

0

0

16.8

0.54

33

Aug.

0

*8?~C

0

0

O

0

0

0

0

0

0

.2

0

0

1.8

0

0

O

4.3

0

0

0

0

0

O

.1

0

0

0

0

88.4

2.85

175

Sept.

0

0

0

Calendar year 1950: Max 165 Mln 0 Mean 0.80 Ac -ft 581

Water -uci year y c&i 1950-51: j.j^w-oj.; Max I'KUl 82 ut. Mln ru.Ii 0 V Mean i'leiiu 0.34 V . *>t Ac-ft AU i O 249 c.ty

Peak discharge (base. 150 cfs).--Apr. 19 (9:30 p.m.) 198 cfs (4.68 ft); Aug. 2 (3 a.m.) 676 cfs 

(6.43 i. 43 f ft). 11 .

* Discharge measurement made on this day.
436 GILA RIVER BASIN

Sabino Creek near Mount Lemmon, Ariz.

Location. Lat 32°25'15", long. 110°45'15 M , in M£W£ sec. 6, T. 12 S., R. 16 E., on left 

Bank 250 ft below Bear Wallow Creek, ij miles south of Mount Lemmon post office, and 

18 miles northeast of Tucson.

Drainage area. --3. 2 pq mi, approximately.

Records available.--May to September 1951.

Gage.--Water-stage recorder. Altitude of gage is 7,250 ft (from topographic map).

Extrenes.--Maximum discharge during period, 268 cfs July 23 (gage height, 8.5 ft), from 

rating curve extended above 50 cfs by logarithmic plotting and velocity-area studies; 

no flow for an extended period in June and July.

Remarks. Records good. Small diversions for domestic use above station.

Rating table, Hay 1 to Sept. 30. 1951 (gage height, In feet, 

and discharge, In cubic feet per second)

4.6

4.7

4.8

4.9

5.0

0.01 

.02 

.07

5.1

5.2 

5.4 

5.7 

6.0

2.1

3.5

7.6

16

29

Discharge, in cubic feet per second, May to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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. Mar. Apr. May

al

alO"SS

al

a. 5

}..,

.3

.3

.3

.3

.3

.3

.3

*.3

.3

.2

.2

.2

.2

.1

.1

.09

.09

.09

.07

.05

.C5

21.14

0.682

42

June

0.04 "TT33-

.03

.03

.02

.02

*.02

.02

.02

.02

.01

.01

.01

.01

.01

.01

.01

.01

0

ff

0

0

0

0

0

0

0

0

0

0

-

0.33

0.011

0.7

July

0

ff

0

0

0

0

0

*0

o

0

0

0

0

.01

.2

.1

.02

.01

.02

.01

.01

.01

4.8

1.9

2.1

1.8

1.2

.7

*.3

.3

.3

13.79

0.445

27

Aug.

0.3 2? 

TT

3.7

2.0

1.6

1.2

.8

.7

.7

.5

.5

.6

*.V

1.1

2.3

1.4

.7

2.1

1.6

1.4

.9

.7

5

.4

.6

14

25

12

6.2

3.7

127.9

4.13

254

Sept.

2.2

TTS

*1.1

.9

.7

.6

.6

.8

.5

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.06

.05

*.F" .04

.3

-

13.15

0.438

26

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft

Peak discharge (base, 100 efs). July 23 (8:30 p.m.) 268 cfs (8.5 ft); Aug. 2 (7 p.m.) 158 cfE 

(7.65 ft}.

* Discharge measurement or field observation of no flow made on this day.

a No gage-height record; discharge estimated on basis of records for station near Tucson.
GILA RIVER BASIN

Sabino Creek near Tucson, Ariz.

Location Lat 32°19'00", long. 110°48'35", In SE^NEir sec. 9, T. 13 S., R. 15 E., on right

sank naif a mile north of Coronado National Forest boundary and 12 miles northeast of

Tucson.

Drainage area.--35.0 sq mi. 

Kecpras available.--July 1904 to June 1912 (monthly discharges only), June 1932 to Septemoer lybj.. 

Gage.--Water-stage recorder and concrete control since June 27, 1932. Water-stage recorder

and sharp-crested weir half a mile upstream July 1904 to June 1912. 

Average discharge.--26 years (1904-11, 1932-51), 11.5 cfs. 

extremes.--Maximum discharge during year, 750 cfs Aug. 2 (gage height, 5.11 ft); no flow

ror parts of June and July.

1932-51: Maximum discharge, 3,200 cfs (revised) Mar. 3, 1938 (gage height, 7.13 ft),

from rating curve for spillway of dam 1,000 feet downstream; no flow at times during

most years.

Revisions. The figures of maximum discharge for water years 1938 and 1946 have been

revised to a,200 cfs Mar. 3, 1938 (gage height, 7.13 ft) and 2,000 cfs Aug. 23, 1946

(gage height, 6.30 ft), superseding figures published in the Water-Supply Papers 859,

1059, respectively. 

Remarks.--Records excellent. No diversions above station except for domestic supply.

Slight regulation since 1933 by several small dams constructed to provide recreational

lakes.

Revisions (water years).--Revised figures of discharge in cubic feet per second, for 

periods in water years 1938 and 1946 are given herewith. They supersede those 

published in Water-Supply Papers 859 and 1059.

Day 

(water year)

1938 

Mar. 3...... 

4. .....

Discharge 

(cubic feet 

per second)

670 

524

Day 

(water year)

1946 

Aug. 23.....

Discharge 

(cubic feet 

per second)

215

Revised figures of peak discharge for 1938, superseding those published in Water-Supply 

Paper 859 are as follows: Mar. 3 (4:55 p.m.) 2,800 cfs; Mar. 3 (11;10 p.m.) 3,200 cfs.

Month

Water year 1937-38..... 

Calendar year 1938.....

Water year 1945-46 ..... 

Calendar year 1946.....

Cfs-days

2,260.84 

2,348.88

1,946.57 

2,083.30

Maximum

670 

670

215 

215

Minimum

1.6

0 

0

.7

0 

0

Mean

52.3

6.19 

6.44 

20.6

5.33 

5.71

Runoff in 

acre-feet

3,220

4,490 

4,660 

1,260

3,860 

4,130

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

*0.02

 To2

.02

.02

.02

.02

.02

.02

.01 ."51

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

0

0

0

o

o

0

0

0.32

o.oio

0.63

Nov.

*0.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

-

0.30

o.oio

0.60

Dec.

o.oi

.01

.01

.01

.01

.01

.01

.01

.02

.02

.02

.02

.02

.02

.02

.02

.02

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

0.40

0.013

0.79

Jan.

0.02

*T03

.03

.03

.03

.03

.04

.04

.04

.04

.04

.04

.03

.03

.03

.03

.03

.03

.03

.03

.03

.03

.02

.02

.02

.02

.03

.03

.04

.03

.02

0.94

O.O3O

1.9

Feb.

*0.02

.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

-

-

0.56

O.02O

1.1

Mar.

0.02

T02

.02

.02

.02

.02

.02

.02

.02

.03

.03

.02

.03

.02

.02

.02

.03

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

2.0

3.1

m1.4

10.98

0.354

2.2

Apr.

1.0

*.8

.7

.7

1.2

27

?4

25

19

12

9.4

6.6

4.4

3.7

2.9

2.1

1.8

1.5

2.2

2.9

6.0

3.9

2.9

2.1

1.8

1.5

1.3

.8

.8

2.1

-

172.1

5.74

341

May

*4.4

9.2

19

12

7.6

5.2

3.7

2.7

2.1

1.6

1.4

1.0

.9

.9

.8

.8

.8

.6

.5

.3

.3

.2

.2

.1

.08

.06

.04

.03

.02

.02

 21

76.56

2.47

152

June

*0.02 -702

.02

.02

.02

.01

.01

.01

.01

.01

.01

0

O

0

O

O

O

0

0

0

0

o

o

0

0

0

0

0

0

0

-

0.16

0.005

0.32

July

£

O

0

0

0

0

0

0

0

0

0

0

0

0

0

o

0

o

0

0

0

0

6.9

7.3

474

3.0

2.7

1.6

1.4

1.0

.5

28.8

0.93

57

Aug.

*0.3

176

TT5

24

11

11

5.7

3.7

3.1

2.4

1.9

1.5

1.3

1.2

*5.9

4.4

18

9.0

10

8.6

6.0

4.7

3.3

2.6

1.9

1.6

50

161

69

33

*18

763.1

24.6

1,510

Sept.

11

7.2

5.2

4.2

3.5

2.9

2.6

7.3

15 -f.4

2.6

1.9

1.4

1.0

.8

.6

.4

.3

.2

.2

.1

.1

.06

.04

.04

.04

.03

.03

753

.03

-

73.20

2.44

145

Calendar year 1950: Max 175 Mln O Mean 2.27 Ac-ft 1,640

Water year 195O-51: Max 176 Mln 0 Mean 3.09 Ac-ft 2,230

Peak discharge (base. ISO efs).--July 23 (8:30 p.m.) 340 cfs (4.1 ft); Aug. 2 (4:30 a.m.) 750 cfs 

(5.11 ft); AugT 27 (9 p.m.) 346 cfs (4.12 ft). 

* Discharge measurement made on this day.

256684 O - 53 - :
438 GILA RIVER BASIN

Rillito Creek near Tucson, Ariz.

Location. Lat 32°17'40", long. 110°59'05", in SW^SE^ sec. 14, T. 13 S., R. 13 E., on 

right bank 1,100 ft downstream from Pima Canyon, 2,300 ft downstream from bridge on 

U. S. Highway 89, 4f miles upstream from mouth.and 5 miles north of Tucson.

Drainage area. 916 sq mi.

Records available. October 1908 to September 1951 (prior to October 1917, monthly discharges only).

Gage. Water-stage recorder. Datum of gage is 2,288.23 ft above mean sea level, datum of 

1929, supplementary adjustment of 1949. July 25, 1930, to July 19, 1945, at former 

highway bridge 1,800 ft upstream. Prior to fall of 1911, and July 22, 1916, to July 

25, 1930, staff gages on various piers of bridge. Water-stage recorder fall of 1911 to 

July 21, 1916. Datum of gages 3.91 ft higher July 22, 1916, to July 22, 1926; 7.59 ft 

lower July 23, 1926, to July 25, 1930, and 2.53 ft higher July 25, 1930, to July 19, 

1945.

Average discharge. 43 years (1908-51), 20.2 cfs; median of yearly mean discharges, 8.3

Extremes.--Maximum discharge during year, 9,500 cfs July 25 (gage height, 6.93 ft); no flow 

during most of year.

1908-51: Maximum discharge, 28,000 cfs Dec. 23, 1914, estimated by the Arizona 

Agricultural Experiment Station in 1941 on basis of their original flood record; no flow 

most of each year.

A discharge of 24,000 cfs occurred Sept. 23, 1929.

Remarks. Records good except those for periods of fragmentary gage-height record, which 

are fair. Several small diversions above station for irrigation and municipal and 

domestic supply, mostly by pumping from ground water.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

0

0

Apr.

0

0

0

May

0

0

o

June

0

0

0

July

0

0

0

0

0

0

0

0

o

0

0

o

0

0

0

0

0

0

0

0

0

o

0

62

*667

*240

*141

28

0

0

0

1,138

36.7

2,260

Aug.

8.6

*623 ~SS

*2.6

0

0

0

0

0

2.1

0

0

49

56

.7

*57

1.9

0

f21

f6.7

O

0

O

0

0

0

0

38

28

0

0

947.6

30.6

1,880

Sept,

0

0

0

Calendar year 1950 : Max 2,O1O Min o Mean lo.O Ac-ft 7,260

Water year 1950-51 : Max 667 Min o Mean 5.71 Ac-ft 4,140

Peak discharge (base. 1,000 cfs). July 25 (10 p.m.) 9.5OO cfs (6.93 ft); Aug. 2 (8 a.m.) 4,200 cfs 

(4.55 ft); Aug. 13 (11 p.m.) 2,280 ofs (3.40 ft). 

* Discharge measurement made on this day. 

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 

Santa Cruz River at Cortaro, Ariz.

439

Location. Lat 32 0 21'10", long. 111 0 05'45", in SW^SWi sec. 26, T. 12 S., R. 12 E., on downstream side of bridge pier half a mile southwest of Cortaro, 3 miles downstream from 

Canada del Oro, and 4 miles downstream from Rillito Creek.

Drainage. 3,480 sq mi, approximately.

Records available. October 1939 to June 1947 (published as "at Rillito" 

septemoer ia&i.

July 1950 to

Gage. Water-stage recorder. Datum of gage is 2,137.13 ft above mean sea level, Arizona 

Highway Department bench mark. Prior to June 30, 1947, at site 4f miles downstream at 

different datum.

Average discharge. 8 years (1939-46, 1950-51), 22.9 cfs.

Extremes. Maximum discharge during year, 6,820 cfs July 25 (gage height, 6.50 ft); no flow 

ror many days.

1939-47, 1950-51: Maximum discharge, 17,000 cfs Aug. 14, 1940 (gage height, 9.9 ft, 

site and datum then in use); no flow during greater part of each year.

Remarks. Records fair except those for periods of fragmentary gage-height record, which are 

poor. During year 20 discharge measurements and 2 field estimates were made, of which 

all except 2 discharge measurements were made during July and August. Many diversions 

above station, mostly by pumping from ground-water basin, for irrigation of about 25,000 

acres.

Rating table, water year 1950-51 (gage height, In feet,

and discharge, in cubic feet per second)

(ShiftIng-control method used July 23, Aug. 15,

22-24, 25-29, Sept. 6-8)

1.8 0

1.9 .3

2.0 1.6

2.1 ' 5.4

2.2 17

2.3 40

2.4 73

2.6 171

3.0 478

3.5 1,045

4.0 1,780

5.0 3,530

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2 

3

4

5

6

7

8

9

10

11

1213 '

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

Jan.

0

0

0

Feb.

0

0

0

Mar.

0

U 

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

TT~ 2.4

0

0

0

0

0

0

0

0

.8

1.4

.7

5.3

.17

11

Apr.

 * 

0.7

1.4 

0

3.0

3.4

4.8

3.5

2.1

*1.6

1.4

1.2

1.0

.8

.6

.1

0

.4

.7

1.1

6.6

0

0

0

0

0

0

0

0

0

2.6

-

37.0

1.23

73

May

0.2

0 

U

0

0

0

.1

.2

.5

.4

.1

0

0

.2

.5

.5

.2

.4

1.0

1.1

1.3

.4

.1

.6

.6

.6

.3

.6

2.4

T7T

.9

14.6

.47

29

June

*0.8

3.0 

TS- 3.4

.9

.9

1.0

.9

.6

^4

.6

.9

1.4

1.9

.7

1.4

1.4

1.2

1.9

1.0

1.2

1.2

.9

1.2

1.4

1.6

1.4

1.6

1.9

2.1-'

39.4

1.31

78

July

2.1

*2.1 

1.9

3.4

3.8

3.4

2.7

3.0

5.4

4.3

3.8

*39

1.1

3.9

*51

37

*327

f.l

f34

0

0

0

30

*147

292

*648

*5S4-

*39»

14

6.9

**1.9

2,191.8

70.7

4,350

Aug.

47

»1,B60 

*735

*68

7.7

221

**2.0

.2

.1

.4

.3

.1

.2

*115

132

117

2.0

31

28

46

*15

.8

.3

.2

£

.5

1.6

14

14

0

0

3,459.4

112

6,860

Sept.

0

u

0

0

0

10

f39~T.8

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

f5

0

-

54.8

1.83

109

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 1,860 Mln o Mean 15.9 Ac-ft 11,510

Peak discharge (base, 2,700 cfs).-

6,820 cfs J6.50 ft;; Aug. Z ^2:3O p.i

-July 17 (1:30 a.m.) 2.700 cfs (4. 82 ft); July 25 (11:30 p.m.) 

n.) 4,560 cfs (5.48 ft).

* Discharge measurement made on this day.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights
440 GILA RIVER BASIN

Santa Cruz River near Laveen, Ariz.

Location. Lat 33°13', long. 112°10', in UE^NEi sec. 29, T. 2 S., R. 2 E., on Gila River 

Indian Reservation, on downstream side of highway bridge 3 miles south of Komatke, 

9 miles upstream from mouth, and 9j- miles south of Laveen.

Drainage area. 8,970 sq mi, approximately.

Records available. January 1940 to September 1946, December 1947 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 1,020.86 ft above mean sea level, datum of 

1929, Phoenix-Picacho supplementary adjustment of 1949.

Average discharge.-- 9 years (1940-46, 1948-51), 24.4 cfs.

Extremes. Maximum discharge during year, 5,060 cfs, including an estimated 1,000 cfs in 

overflow channel bypassing gage, Aug. 28 (gage height, 17.00 ft); no flow for many days.

1940-46, 1947-51: Maximum discharge, that of Aug. 28, 1951; no flow for many days 

in 1950, 1951 and negligible seepage flow amounting to less than 0.05 cfs in 1940, 1948, 

1949.

Remarks. Records good except those below 5 cfs and above 2,000 cfs, which are fair.

He cord includes overflow bypassing gage which occurred Aug. 6, 7, 28-31. Msny diversion 

above station, mostly by pumping from the underground basin, for municipal uses and for 

irrigation of about 240,000 acres, not including San Carlos project. Discharge measurements generally made twice a month.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

'11

12

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

.4

.1

.1

.1

.3

.1

0

0

0

0

0

0

.5

.4

.1

.4

.3

.3

.1

1-

1

1

1

.5

.2

.1

.1

0

0

0

9.9

0.32

20

Nov.

0.0

0

0

o

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.1

.1

.1

.1

.1

?

tf

.2 

.2

.1

-

1.5

0.04

2.6

Dec.

0.1

.1

.1

.1

.1

.1

.1

.1

.2

.2

.1

.1

.2

.2

.2

.2

.2

.5

.3

.5

.5

.3

.3

.4

.4

.4

.4

.6 

.6

.7

76

8.3

0.27

16

Jan.

0.5

T6

.6

.7

.7

.7

.7

.6

.6

.7

.6

4

.8

 .8

.7

.8

.8

.7

.7

.7

.6

.7

.6

.6

.6

.6

.6

.6 

.6

21

*169

212.5

6.85

421

Feb.

"66 142

11

4

2

!

* I

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

2

2

1

-

251

9.0

498

Mar.

1

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

5

3

2

4

5

5

2

2

2

7

14

4 

3

4

4

95

3.1

188

Apr.

4

4

4

4

9

8

8

6

7

5

4

5

5

4

5

2

5

5

5

5

3

4

3

3

4

5

4

5 

8

9

-

140

4.7

278

May

11

12

15

9

7

4

6

6

6

6

4

4

5

5

7

6

4

5

4

5

4

2

3

3

3

3

3

3 

4

4

5

164

5.5

325

June

2

2

3

4

5

2

2

5

4

4

7

7

6

7

7

8

6

7

8

8

7

5

6

6

5

4

5

5 

4

4

-

155

5.1

505

July

6

5

5

4

5

8

6

6

7

8

6

4

5

2

2

2

5

6

11

5

4

5

2

1

.9

.7

90

370 

114

82

94

867.6

28.0

1,720

Calendar year 1950 : Max 320 Min 0 Mean 6.38 Ac-ft 4,620

Aug.

55

57

451

1,070

294

1,250

1,850

189

602

41

54

22

22

24

227

51

29

26

24

17

15

15

18

18

11

10

486

5.590 

2,100

2,470

734

15,538

501

30,820

Sept.

46

12

8

9

10

12

15

15

14

14

11

12

11

11

10

9

8

7

, 6

7

8

7

8

7

7

5

5

5 

4

25

-

524

10.8

643

Water year 1950-51 : Max 5,390 Min 0 Mean 48.7 Ac-ft 35,250

Peak discharge (base, 380 cfs). Ju

(15.85 ft); Aug. 7 (4 a.m.) 2,810 cfs

ly 28 (8 a.m.) 502 cfs (9.50 ft); Aug. 4 (5 a.m.) 1,510 cfs 

(15.73 ft); Aug. 15 (5 p.m.) 527 cfs (9.70 ft); Aug. 28 (2 p.m.)

5,060 cfs (17.00 ft).
GILA RIVER BASIM

Black River near Fort Apache, Ariz.

Location.--Lat 33°43', long. 110°12', in sec. 29 or 30, T. 5 N., R. 21 E., unsurveyed, on 

San Uarlos Indian Reservation, three-quarters of a mile upstream from bridge on San 

Carlos-Fort Apache highway, 5j miles upstream from White River, and 14 miles west of 

Fort Apache.

Drainage area.--1,230 sq mi, approximately (revised).

Kecords available. November 1912 to May 1918 (fragmentary; monthly discharge only for 

water year 1916), discontinued.

Gage.--Water-stage recorder at described site Dec. 8, 1916, to Jan. 19, 1917, Oct. 10,

 1917, to May 2, 1918. Altitude of gage is 4,360 ft (from river-profile map). Nov. 24, 

1912, to May 13, 1913, and May 12-29, Sept. 3-30, 1916, staff gages about 0.7 mile 

downstream, 400 ft upstream from highway bridge, at different datum. Oct. 16, 1913, 

to Dec. 19, 1914, water-stage recorder, and Jan. 20, 1915, to Jan. 8, 1916, staff gage, 

1 mile downstream at different datum.

Extremes. 1912-18: Maximum discharge not determined, probably occurred in January 1916; 

minimum recorded, 30 cfs Jan. 14, 1918, result of freeze-up.

Greatest flood recorded 1912-18 was 18,000 cfs Dec. 20, 1914 (gage height, 15.9 ft, 

from floodmarks, datum then in use), from rating curve extended above 1,000 cfs. Flood 

of Jan. 28, 1915, is known to have exceeded this by an unknown amount.

Remarks.--Mo diversion or storage above station.

Kevisio'ns.--Revised figures of discharge for the water years 1914-16 are given herewith.

 They supersede figures published in Water-Supply Papers 389, 409, 439, 1049.

Day 

(water year)

1914-15 

Dec. 5.... 

6. ... 

7 .... 

8. ... 

9. ... 

10. ...

Discharge 

(cubic feet 

per second)

200 

2OO 

200 

200 

180 

180

Month

Water year 1 

Calendar yea

September 1916

r 1915........

Day 

(water year)

1914-15 

Dec. 11. .... 

12..... 

13. .... 

14.. ... 

15.... . 

16. ....

Cfs-days

40,885

28,255 

438,095 

388,091

_

Discharge 

(cubic feet 

per second)

180 

180 

180 

180 

180 

150

Maximum

12,000 

12,000

10,OOO 

12,000

_

Day 

(water year)

1914-15 

Dec. 17.. ... 

18.. ... 

20. .... 

21..... 

Jan. 28..... 

29.....

Minimum

150 

61

130 

70 

70

_

Mean

1,320 

435

911 

1,200 

1,063

*321

Discharge 

(cubic feet 

per second)

150 

150 

12,000 

8,000 

10,000 

8,OOO

Runoff In 

acre-feet

81,090 

315,000

56,040 

868,990 

769,800

19,120

* Only monthly figures revised; revised dally flgures*^ot available. 

Discharge, In cubic feet per second, water year October 1913 to September 1914

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

90

72

72

73

71

70

69

68

68

68

68

67

66

66

66

66

66

2,446

79

4,850

Nov.

5B~ 66

66

68

68

68

70

71

70

68

68

67

68

68

69

71

74

78

82

85

93

91

91

91

94

96

100

115

TIC

100

2,392

79.7

4,740

Dec.

94

91

88

88

86

86

85

78

w

83

83

80

82

86

93

93

91

90

93

93

82

86

84

78

89

90

79

83

80

85

87

2,666

86.0

5,290

Jan.

86

90

91

92

93

89

92

93

92

92

93

85

82 SB86

93

180

215

204

180

155

143

143

143

143

167

197

155

155

205

243

4,063

131

8,060

Feb.

235

215

195

180

155

143

134

130

122

122

120

122

120

117

123

216

2,050

_

_

-

_

_

_

-

.

_

_

_

_

-

_

t700

38,880

Mar.

500

520

544

575

580

750

875

845

735

670

665

685

735

750

775

755

750

740

690

625

640

750

820

880

20,354

657

40,370

Apr.

955

'5BH 960

810

740

690

625

600

560

528

532

515

463

410

370

343

330

313

288

270

245

223

212

196

183

167

166

155

152

143

-

13,029

/434

25,840

May

135

T27

127

127

127

127

127

125

125

122

122

114

113

105

105

101

98

98

98

98

98

92

88

84

84

84

92

92

88

84

80

3,287

106

6,520

June

70

TO

69

68

67

66

65

65

65

64

64

64

63

62

62

62

62

62

65

63

62

62

62

62

62

63

61

BT

61

61

-

1,915

64

3,800

July

61

6T

66

71

72

72

72

70

67

65

65

65

65

65

84

120

180

226

265

310

375

324

288

305

348

388

388

388

565

650

110

6,851

221

13,590

Aug.

540

400

335

400

310

475

550

540

490

415

350

328

305

308

285

388

215

212

155

620

500

980

1,470

1,370

1,250

975

890

910

690

795

955

18,701

603

37,090

Sept.

1,000

SSO

655

560

530

525

460

405

360

335

405

420

400

370

350

310

285

265

245

235

225

225

225

225

220

220

220

220

220

220

-

11,185

373

22,190

Calendar year : Max Mln Mean Ac-ft

Water year : Max Mln Mean Ac-ft

t Monthly discharge estimated on basis of records for Salt River near Roosevelt.
442 GILA RIVER BASIN

White River near McNary, Ariz.

Location. Lat 34°02'45", long. 109°44'15", in Ei sec. 31, T. 8 N., R. 25 E., unsurveyed,

 on left tank, on Port Apache Indian Reservation, 2 miles downstream from Paradise Creek,, 

and 6f miles south of McNary.

Drainage area. 74 sq mi, approximately.

Gage. Water-stage recorder. Altitude of gage is 7,750 ft (from Indian Irrigation Service 

river-profile map).

Records available.--June 1945 to September 1951.

Extremes. Maximum discharge during year, 167 cfs Aug. 28 (gage height, 2.13 ft); minimum

 ODserved, 4.0 cfs Nov. 29, but may have been lower during other periods of ice effect. 

1945-51: Maximum discharge, 1,290 cfs Sept. 19, 1946 (gage height, 5.36 ft), from 

rating curve extended above 350 cfs by logarithmic plotting; minimum recorded, 4 cfs 

Nov. 19, 1948, and Nov. 29, 1950, caused by ice jam upstream.

Remarks.--Records good except those for periods of ice effect, which are poor, 

sion or storage above station.

No diverRating table, water year 1950-51, except periods of Ice effect 

(gage height, In feet, and discharge, In cubic feet per second)

1.0 

1.3

1.6 

2.0 

2.5

70

137

262

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

TF

10

10

10

10

9.8

9.8

9.8

9.4

9.4

9.4

9.4

9.4

9.0

9.0

9.0

9.8

9.4

9.0

9.0

9.0

9.0

9.0

9.0

9.0

*8.7

8.7

8.3

8.7

SjS

295.3

9.53

586

NOV.

8.3

8.3

8.3

8.3

8.0

8.0

8.0

7.5

7.8

7.5

8.3

9.0

9.4

7.0

9.5

10

11

TT

7.8

9.0

7.5

7.5

111

8.7

9.3

8.9

8.3

7.8

*7.4

7.6

-

252.3

8.41

500

Dec.

7.0

6.0

8.5

6.1

5.7

5.9

11

12

9.2

8.0

8.4

8.1

7.7

8.7

8.6

7.4

8.6

9.6 *9.7

8.3

7.8

6.4

6

232.7

7.51

462

Jan.

4

> 6

8

208

6.7

413

Feb.

8

(*)

10

10

10

10

10

11

10

12

_

_

-

243

8.7

482

Mar.

14

11

10

To

10

10

24

22

32

28

28

26

*24

20

16

14

13

12

14

14

19

20

22

25

25

26

25

21

19

21

20

595

19.2

1,180

Apr.

18

20

23

26

24

27

28

26

28

31

31

*28

28

28

28

28

30

28

31

33

31

32

35

*37

33

28

28

30

31

28

-

857

28.6

1,700

May

28

31

43

48

52

55

53

52

49

46

44

44

40

39

*37

33

28

27

27

29

31

31

33

35

36

41

43

45

44

42

41

1,227

39.6

2,430

June

37

33

31

28

25

23

21

19

18

17

16

15

15

14

13

13

12

12

*11

11

10

9.4

9.4

9.4

9.0

8.3

8.3

8.0

7.8

7TS

-

471.4

15.7

935

July

7.8

7.2

7.E

TT§

7.5

7.5

7.2

7.2

6.4

7.0

8.3

12

14

16

13

12

12

*10

15

9.4

8.7

9.8

9.8

12

11

15

16

17

14

12

326.2

10.5

647

Aug.

18

29

21

14

13

15

12

10

9.4

9.8

8.7

8.0

8.0

8.0

9.0

*9.8

10

9.0

9.0

11

12

14

15

10

12

13

25

126.

84

57

45

654.7

21.1

1,300

Sept.

37

31

26

23

21

19

20

19

20

16

15

14

13

12

12

12

11

11

*11

12

12

13

12

11

11

11

TO" 10

22

19

-

486

16.2

964

Calendar year 1950: Max - Mln - Mean - Ac-ft -

Water year 1950-51: Max 126 Mln - Mean 16.0 Ac-ft 11,600

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 4 to Feb. 21, Mar. 4-6, 18-20.
GILA RIVER BASIN 443

White River at White River, Ariz. 

(Formerly published as North Pork of White River at Whiteriver, Ariz.)

Location. Lat 33°50'30", long. 109°57'30", in SW£ sec. 7, T. 5 N., R. 23 E., Just downstream from tailraoe of power plant at White River, half a mile east of Fort Apache 

Indian School at White River, and 4§ miles upstream from East Fork White River.

Drainage area. 357 sq mi (revised).

Records available.--October 1916 to June 1922 (discontinued).

Gage. Staff gages 75 to 140 ft downstream from tallrace of power plant at different 

cTatums. Altitude of gages was 5,140 ft (from river-profile map).

Extremes. 1916-22: Maximum discharge observed, 2,700 cfs Aug. 4, 5, 1921 (gage height, 

TTTTTt, datum then in use), from rating curve extended above 700 cfs; minimum observed, 

10 cfs June 22, 27, 1921.

Remarks. Several small diversions for irrigation above station. Slight regulation by 

power plant.

Revisions.--Revised figures of discharge for the water years 1917, 1921-22 are given herewitn. They supersede figures published in Water-Supply Papers 459, 529, 549, 1049.

Day 

(water year)

1916-17

Mar. 26. ....

Zl .....

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.....

27.....

28.....

29 .....

30.....

May 1 .....

2. ....

3.....

4.. ...

5.....

6. ....

7. ....

Discharge 

(cfs)

227

227

327

348

497

435

376

348

295

248

295

348

435

562

630

530

497

435

435

497

530

435

405

376

376

376

405

435

376

405

435

376

465

405

465

435

435

465

405

348

376

348

348

Day 

(water year)

1916-17

May 8 ....

9. ...

10. ...

11....

12....

13....

14....

15....

16....

17....

18....

19....

20....

21....

22 ....

23 ....

24....

25....

26 ....

27 ....

28....

29 ....

30....

31....

July 19....

Sept. 7....

1920-21

Apr . 1 ....

2....

3....

4....

5. ...

6....

7... .

8....

9....

10....

11....

12....

13 ....

14. ...

15....

Discharge 

(cfs)

327

295

327

272

248

295

248

295

348

295

272

248

295

327

272

272

248

248

248

248

248

207

207

207

216

81

68

68

68

68

68

68

68

68

68

68

68

68

68

78

78

Day 

(water year)

1920-21

Apr. 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.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

Discharge 

(cfs)

78

78

78

78

68

78

78

78

78

78

89

89

102

102

102

78

78

89

89

78

78

78

78

68

78

68

68

78

78

78

68

68

68

78

68

68

68

68

68

68

78

78

78

Day 

(water year)

1920-21

May 29 .....

30.....

31 .....

June 1 .....

2... ..

3.... .

4.....

5.... .

Aug . 1 .....

3.....

4.....

5.... .

10.....

11.....

12.....

13.....

20... ..

21.....

23 .....

25.....

26... ..

27.....

28.....

29 .....

30.....

31.. ...

Sept. 1.....

1921-22

Apr . 3 .....

4.... .

5.....

21.....

22.....

23.....

24.....

25.....

26.....

27.....

28.....

29.....

30 .....

June 10. ....

Cfs-days Maximum Minimum Mean

March 1917.. .......................... 5,029 497 85 162

April........... ...................... 12,631 630 248 421

May. .................................. 9,222 465 207 297

July...... ............................ 3,523 216 75 114

September............ ................. 1,716 81 35 57.2

Water year 1916-17............. ..... 55,243 635 23 151

Calendar year 1917.................. 47,922 630 24 131

April 1921.. .......................... 2,294 102 68 76.5

May.. ................................. 2,300 89 68 74.2

June. ................................. 1,198 108 10 39.9

August.. .............................. 21,140 1,250 395 682

September...................... ....... 5,118 830 55 171

April 1922............................ 14,553 760 270 485

June.................................. 3.409 192 55 114

Discharge 

(cfs)

78

68

68

58

58

58

58

58

760

720

1,250

1,250

860

830

900

860

900

1,100

780

620

555

860

650

620

1,250

940

830

555

555

580

520

580

720

760

760

720

580

520

520

520

130

Runoff in 

acre -feet

9,970

25,050

18,290

6,990

3,400

109,600

95,050

4,550

4,560

2,380

41,930

10,150

28,870

6,760
444 GILA RIVER BASIN

East Pork White River at Port Apache, Ariz .

Location. --Lat 33°48', long. 109°59 r , in S| sec. 26, T. 5 N., R. 22 E., on Port Apache 

Indian Reservation at north edge of Port Apache, half a mile upstream from mouth.

Gage.--Staff gage. Altitude of gage is 4,990 ft (from river-profile map). Prior to 

 Tan. 20, 1915, at datum 4.6 ft lower. Jan. 20, 1915, to Aug. 4, 1917, at datum 0.40 

ft higher.

Extremes.--1912-20: Maximum discharge not determined, probably occurred Jan. 17 or 18, 

ibti'b, and was probably greater than 1,000 cfs; minimum observed, 2 cfs in September 

and October 1918,

Remarks.--Several small diversions for irrigation above station.

Revisions --Revised figures of discharge for the water year 1913-14, superseding figures 

puDiished in Water-Supply Paper 389, are given herewith:.

(wate

Day 

r year)

1913-14

Feb.

Sept.

14....

15....

16....

17. ...

20. ...

Month

Water year 1913-14.

Discharge 

(cubic feet 

per second)

67

67

67

72

35

Maximum

160

Minimum

16

Mean

52.5

Runoff in 

acre-feet

3,630

38,020
GILA RIVER BASIN 445

White River at Fort Apache, Arlz.

Location. Lat 33°47', long. 110°00', In NW£ sec. 35, T. 5 N. , R. 22 E. , on Fort Apache 

Indian Reservation, at highway bridge, 0.2 miles downstream from East Fork White River, 

half a mile west of Fort Apache, and 18 miles (revised) upstream from confluence with 

Black River.

Drainage area.--499 sq mi (revised).

Records available. October 1912 to June 1922 (fragmentary), discontinued.

Gage. Staff gage. Altitude of gage is 4,940 ft (from river-profile map). Datum of gage

 raised 4.4 ft Jan. 20, 1915, lowered 0.64 ft Dec. 5, 1915, and changed an undetermined 

amount June 6, 1921.

Extremes.--1912-22: Maximum discharge not determined, probably occurred Jan. 19, 1916; 

maximum daily discharge recorded, 3,830 cfs Jan. 28, 1916; minimum daily recorded, 

25 ^fs Nov. 3, 4, 1915.

Remarks.--Several small diversions for irrigation above station. Ho regulation or storage 

aoove station.

Revisions.--Revised figures of discharge for the water years 1913, 1919, 1921-22 are given

 Herewith. They supersede figures published in Water-Supply Papers 389, 509, 529, 549, 

and 1C49.

Day 

(water year)

Discharge 

(cubic feet 

per second)

72

72

72

113

Month

December 1912 .......... 

March 1913.. ...........

Cf s-days

1,647 

4..9SS

Maxim-urn

72 

64R

Minimum

30 

36

Mean

53.1 

160

Runoff in 

acre-feet

3,270 

9.B4O

Discharge, in cubic feet per second, 1918-19, 1921-22

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

Tota:

Mean

Ac-ft

1918-19

Dec .

62

63

62

63

62

65

67

150

100

90

80

67

56

63

. 55

1,985

64.0

3,940

May

670

670

700

730

730

750

73C

700

650

620

590

580

560

550

520

520

490

470

480

460

460

490

480

490

450

410

420

470 

430

420

400

17,090

551

33,900

June

400

363

315

290

270

245

230

230

225

200

190

190

190

162

157

157

145

133

133

122

120

111

109

105

100

96

96

96 

92

1TJ5

-

5,374

179

10,660

Jftly

162

?T5

325

265

275

275

450

450

480

470

650

70O

750

670

1,780

1,100

980

1,480

1,350

1,150

1,450

1,220

785

710

508

476

508

508 

508

418

378

21,476

693

42,600

1921

June

88

80

80

80

71

71

62

62

71

71

90

102

76

71

62

62

53

45

45

39

39

39

32

32

32 

'SU 28

-

1,875

62.5

3,720

July

28

28

39

45

32

28

32

32

45

53

62

53

90

62

80

80

80

125

137

loo

100

114

210

370

370

348

1,400 

490

1,000

610

6,271

202

12,440

Aug.

9ffiO

7QO

550

WQ

670

580

580

610

670

670

770

800

800

820

880

700

58O

610

640

640

1.470

1,150

1,120

880

1,120

1,000

910

1,000 

910

1,300

1,070

26,120

842

51,810

Sept.

1,070

S'ffO

750

610

530

460

390

360

500

300

275

245

245

220

195

195

175

175

150

150

150

133

150

175

150

133

133

113 

TT3

113

-

9,038

301

17,930

Calendar year 1918: Max 2,5OO Min - Mean 153 Ac-ft lll.OOO

Water year 1918-19: Max - Min 39 Mean 307 Ac-ft 222, 3OO
446 GILA RIVER BASIN

Discharge, in cubic feet per second, of White River at Fort Apache, Ariz., 

1918-19, 1921-22 Continued

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

133

150

T33

113

98

98

98

98

98

98

82

82

82

82

82

82

82

82

82

&8

68

68

68

133

133

113

98

82

82

82

82

2,932

94.6

5,820

Nov.

Se- 82

es

68

68

68

68

68

68

68

68

68

68

68

68

68

68

68

46

FT

68

68

68

68

68

68

68

68

68

68

-

2,021

67.4

4,010

Dec.

68

68

68

38

IS

82

68

57

46

46

68

68

68

57

68

68

38

57

68

57

57

68

68

46

57

98 300'

T75

133

113

113

2,432

78.5

4,820

Jan.

98

150

175 -S3

82

82

82

98

98

82

68

46

57

57

57

57

82

82

82

82

57

57

57

57

82

57

57

57

57

68

82

2,403

77.5

4,770

Feb.

57

FT

57

57

57

57

57

82

150

500

250

250

200

200

150

200

200

220

250

275

300

250

220

200

220

200

200

175

_

_

-

4,891

175

9,700

Mar.

150

98

133

150

175

113

175

133

98

175

150

150

150

113

200

250

660

130

330

360

430

495

430

610

495

570

610

610

570

570

570

10,153

328

20,140

Apr.

610

610

750

750

790

660

570

495

495

430

430

460

495

460

530

610

570

495

495

570

660

750

750

790

790

750

750

700

700

700

-

18,615

620

36,920

May

500

410

380

410

380

410

380

355

380

355

355

380

355

380

380

380

355

380

330

330

330

355

330

305

280 3"30~

12,015

388

23,830

June

330

3t55

305

280

258

218

218

182

200

182

182

150

135

150

135

122

110

110

100

TO5

100

100

110

110

110

135

150

150

135

122

4,994

166

9,910

July

Calendar year : Max Min Mean Ac-ft

Aug. Sept.

Water year : Max Mln Mean Ac-ft
GILA RIVER BASIN

Carrizo Creek near Show Low, Ariz.

Location. Lat 33"59'15", long. 110°17'00", in sec. 24, T. 7 N., R. 19 E., unsurveyed, on 

Apacne Indian Reservation, on upstream side of center pier of bridge on U. S. Highway 

60, 23-j miles southwest of Show Low and 24 miles upstream from mouth.

Drainage area. 453 sq mi.

Records available. June to September 1951.

Gage. Water-stage recorder. Datum of gage is 5,225.11 ft above mean sea level, Arizona 

Tlighway Department bench mark.

Extremes. Maximum discharge during period, 3,260 cfs Aug. 28 (gage height, 6.91 ft); miriimum, 0.2 cfs July 11, 12. Maximum discharge for period June to September 1951 is also 

maximum for the water year 1951.

Remarks. Records good. Diversions for irrigation above station of less than 300 acres.

Rating table, water year 1950-51 (gage height, In feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Aug. 10-28, Sept. 11-29)

2.1

2.2

2.3

2.4

2.5

1.5 

2.5

2.6

2.7

2.8 

3.0 

3.2

4.2

6.8

11

3.5 

4.0 

4.5 

5.0 

6.0

91

219

430

745

1,780

Discharge, in cubic feet per second, June to September 1951

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

Ao-ft

Oct. Nov. Dec. Jan. Feb. Mar. Apr. May June

_

_

_

.

-

.

_

-

_

-

_

_

_

_

-

_

_

_

_

-

.

"re" 0.6

.5

.4

.4

.4

.4

.3

.3

-

-

-

-

July

0.3

.3

.3

.3

.3

*.3

.3

.3

.3

.3

.3

.2

7S

.3

.3

21

T.6

*1.1

1.0

.9

.8

1.0

1.1

1.2

*1.0

1.1

1.2

2.4

1.2

1.2

12.0

54.2

1.75

107

Aug.

2.3

54

2.4

1.0

.9

3.0

1.0

.9

.8 78"

.8

.9

.9

.9

.9

*1.9

1.2

1.1

1.0

1.4

1.2

1.2

1.0

1.4

1.2

.9

12

*962

*355

209

38

1,715.0

55.3

3,400

Sept,

*11

6.5

4.5

3.9

2.8

2.4

2.4

2.3

2.1 i.e

r.s

1.6

1.5

1.5

1.6

1.5

1.4

1.4

1.4

*1.3

1.4

1.4

1.3

1.2

T7Z

1.2

1.2

1.2

18-5.0

-

90.6

3.02

180

Calendar year : Max Mln Mean Ao-ft

Water year : Max Mln Mean Ao-ft

Peak discharge (base, 1,000 efs). Aug. 2 (5:30 p.m.) 1,380 cfs (5.67 ft)} Aug. 28 (6 p.m.) 3,260 

cfs (6.91 ft;.

* Discharge measurement made on this day.
448 GILA RIVER BASIN 

Salt River near Chrysotile, Ariz.

Location. Lat 33°48', long. 110°30' , in sec. 25, T. 5 N., R. 17 E. (revised), unsurveyea,

 on left bank, on San Carlos Indian Reservation, 1,200 ft upstream from bridge on D. S. 

Highway 60, 5i miles northeast of Chrysotile, 8 miles upstream from Cibecue Creek, and 

33 miles downstream from confluence of Black and White Rivers.

Drainage area.--2,830 sq mi, approximately.

Records available.--September 1924 to September 1951.

Gage. Water-stage recorder since Oct. 2, 1924. Datum of gage is 3,354.57 ft above mean

 sea level, datum of 1929.

Average discharge.--27 years, 605 cfs.

Extremes.--Maximum discharge during year, 5,150 cfs Aug. 29 (gage height, 5.79 ft); mini-

 mum," 58 cfs July 11 (gage height, 1.19 ft).

1924-51: Maximum discharge, 52,900 cfs Feb. 7, 1937 (gage height, 15.18 ft); minimum, that of July 11, 1951.

Flood peak of 74,000 cfs (gage height, 18 ft, from floodmarks), from rating curve extended above 52,000 cfs by logarithmic plotting, occurred prior to 1924 and is believed 

to be the peak of flood of Jan. 19, 1916.

Remarks.--Records excellent except those for periods of no gage-height record, which are 

fair. Several small diversions above station for irrigation of about 3,100 acres and 

one transmountain diversion from Black River to Eagle Creek basin for mining and treatment of ore (see p. 441).

Revisions (water years).--W 859: 1926-27, 1929-30, 1934, 1936. 1938 CM). W 899: 1927, 1932, 1937,

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Aug. 31

2.5

60

133

333

643

3.0 1,070

4.0 2,145

5.0 3,590

Sept. 1-30

1.3 77

1.5 121

2.0 328

2.5 640

Discharge, In cubic fee-t per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

108

111

122

125

122

116

116

113

113

111

108

108

105

105

103

100

100

103

100

103

103

103

103

103

105

103

100

103

105

108

108

3,336

108

6,620

Nov.

103

TOT

103

103

103

103

105

105

105

*105

105

108

103

103

111

119

122

116

125

125

122

119

122

130

130

133

136 m

136

136

3,475

116

6,890

Dec.

136

133

136

113

133

136

133

127

133

139

139

139

139

143

TSS

139

143

139

136

136

136

136

133

133

133

*125

T?5

125

127

130

130

4,164

134

8,260

Jan.

136

149

143

133

122

122

135

135

130

130

145

155

160

140

130

130

139

152

149

143

143

143

146

146

149

146

146

149

180

 5T5 220

4,561

147

9,050

Feb.

190

TB5

160

160

160

165

165

162

*162

162

162

165

165

165

162

155

149

TBT

159

159

152

152

152

155

162

165

165

162

_

-

4,509

161

8,940

Mar.

159

159

172

159

143

155

165

*179

187

187

197

209

209

213

217

225

229

221

205

197

209

201

197

201

213

229

272

"272 285

254

245

6,365

205

12,620

Apr.

233

~Sl7 217

221

241

272

299

369

759" 385

354

343

319

309

.95

281

267

263

263

276

309

328

349

*358

343

323

299

281

285

309

8,977

299

17,810

May

314

323

323

454

621

"6T9" 666

558

498

448

414

385

364

338

338

333

309

290

263

245

237

233

233

225

221

217

221

225

221

213

201

10,560

341

20,950

June

187

T73

169

159

152

146

136

130

125

122

119

*119

113

105

103

100

98

93

88

83

81

79

77

75

73

73

73

73

70

7tJ

-

3,270

109

6,490

July

70

70

68

68

63

*68

68

68

64

62

62

62

80

98

73

77

123

115

86

83

83

95

120

139-

113

113

134

195

TT?

146

149

2,992

96.5

5,930

Aug.

224

197

411

338

241

197

165

155

146

127

116

108

103

98

93

 55 86

103

164

113

103

163

226

141

185

139

172

886

2,630

*1,610

852

10,378

335

20,580

Sept.

*563

4T4

339

282

239

209

*196

177

159

156

146

133

127

121

116

111

106

101

96

94

92

90

86

86

86

85

83 53

138

163

-

4,887

163

9,690

Calendar year 1950: Max 760 Min 81 Mean 215 Ac-ft 155,600

Water year 1950-51: Max 2,630 Min 62 Mean 185 Ac-ft 133,800

Peak: discharge (base. 3.500 cfs). Aug. 29 (12:30 a.m.) 5,150 cfs (5.79 ft). 

* Discharge measurement made on this day.

Note. No gage-height record Jan. 6-14, Jan. 29 to Feb. 8, June 26 to July 5; discharge estimated 

n basis of records for station near Roosevelt.
GILA RIVER BASIN

Salt River near Roosevelt, Ariz.

Location. Lat 33°37', Ions. 110°55', in NE£ sec. 9, T. 3 N., R. 14 E., unsurveyed,, on left bank 

IDTTTt downstream from bridge on Globe-Young Highway, a quarter of a mile downstream 

from Final Creek, 1 mile upstream from diversion dam for power canal, 14 miles east of 

village of Roosevelt, and 17 miles upstream from Roosevelt Dam.

Drainage area. 4,310 sq mi, approximately. 

Records available. January 1913 to September 1951.

Gage. Water-stage recorder. Datum of gage is 2,177.14 ft above mean sea level, datum of 

T929. Prior to 1925, staff gages at diversion dam about 1 mile downstream, at different 

datum. 1925 to Jan. 17, 1935, staff gage at present site and datum.

Average discharge.--38 years, 900 cfs.

Extremes. Maximum discharge during year, 27,600 cfs Aug. 28 (gage height, 18.10 ft); mini- 

 mum, 60 cfs July 12.

1913-51: Maximum discharge, 117,000 cfs Mar. 14, 1941 (gage height, 24.4 ft), from 

rating curve extended above 55,000 cfs on basis of velocity-area studies and float-area 

measurements at 66,000 and 102,000 cfs; minimum, that of July 12, 1951. 

Minimum discharge known, about 42 cfs Aug. 5, 1911.

Remarks.--Records excellent. Several small diversions above station for irrigation of

acout 4,000 acres and one transmountain diversion from Black River to Eagle Creek basin. 

Discharge measurements generally made once a week. Records show inflow to Roosevelt 

Reservoir. See page450 for record for Tonto Creek, which also contributes to Roosevelt 

Reservoir.

Revisions (water years).--W 1049: 1914, 1916, 1918-19, 1926.

Rating tables, water year 1950-51 (gage height, In feet,

and discharge, In cubic feet per second) 

(Shifting-control method used Dec. 4 to Feb. 8, Aug. 3, 4, Aug. 27-30)

Oct. 1 to Aug. 2 Aug. 2 to Aug. 26 Aug. 27 to Sept. 30

49

96

190

440

855

83

167

367

647

1,080

99

192

410

705

1,490

12.0

14.0

16.0

18.0

3,690

7,320

13,800

24,700

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

124

121

130

155

127

124

124

124

118

116

115

110

115

115

107

107

110

110

110

115

115

115

115

113

116

115

110

107

110

110

5,581

116

7,100

Nov.

115

115

115

113

116

116

118

121

121

121

118

121

124

124

130

143

143

143

140

149

146

146

143

140

152

155

155

152

152

155

-

5,996

153

7,930

'Dee.

155

155

155

155

155

149

155

152

149

152

155

149

149

155

152

152

152

152

155

152

152

152

152

152

152

152

149

152

152

149

149

4,718

152

9,360

Jan.

158

158

166

162

155

146

145

155

155

143

149

169

180

180

166

155

158

162

166

169

166

162

166

166

169

172

176

180

183

239

262

5,256

169

10,390

Feb.

257

226

198

183

183

185

194

194

190

190

185

183

185

183

186

183

180

172

185

194

186

183

176

186

198

202

202

202

_

-

5,363

192

10,640

Mar.

198

206

210

214

194

176

183

194

206

222

226

259

252

262

262

266

275

275

262

252

248

244

244

239

244

262

295

310

315

295

275

7,545

243

14,970

Apr.

266

257

248

257

266

290

520

558

416

422

404

380

364

347

325

315

300

290

295

315

325

347

358

374

380

569

552

310

295

520

-

9,865

529

19,570

May

542

552

552

404

585

715

715

644

570

518

475

434

404

386

386

380

364

325

305

285

270

257

248

248

239

234

226

230

234

226

214

11,567

375

22,940

June

202

194

186

180

172

166

152

149

145

156

153

127

124

118

110

102

99

99

95

91

86

80

78

75

75

78

78

78

75

75

-

3,554

118

7,050

July

75

75

70

.68

70

70

68

68

68

64_

64

64

64

66

99

119

118

136

118

91

86

83

262

186

220

214

146

121

169

196

164

5,482

112

6,910

Aug.

198

571

664

476

367

284

221

164

152

159

125

114

111

108

98

98

88

98

176

231

298

140

170

213

145

161

350

15.500

5,870

3,950

. 1,690

32,970

1,064

65,400

Sept.

1,010

724

556

448

380

515

518

282

241

222

203

192

172

161

158

149

159

127

124

121

116

113

110

107

105

105

102

96

107

427

-

7,428

248

14,730

Calendar year 1950: Max 1,040 Min 88 Mean .252 Ac-ft 182,300

Water year 1950-51: Max 15,500 Min 64 Mean 272 Ac-ft 197,000

Peak discharge (base, 4,000 ofs).--AuK. 2 (11:30 p.m.) 7,070 cfs (15.40 ft); Aug. 28 

27,600 cfs (IsTlO ft).

(6 p.m.)
450 GILA RIVER BASIN

Tonto Creek above Gun Creek, near Roosevelt, Ariz.

Location. Lat 33°59', long. 111°18', in NEijSW^ sec. 2, T. 7 N., R. 10 E,, on left bank,

 in Tonto National Forest, 600 feet upstream from Gun Creek, 23j miles northwest of village of Roosevelt, and 26 miles upstream from Roosevelt Dam.

Drainage area. 678 sq mi.

Records available. --December 1940 to September 1951.

Gage . --Water-stage recorder since Jan. 29, 1941. Datum of gage is 2,523.14 ft above mean

 sea level, datum of 1929.

Average discharge. 10 years (1941-51), 83.8 cfs.

Extremes . --Maximum discharge during year, 31,100 cfs Aug. 28 (gage height, 14.10 ft); mini-

 mum, 0.5 cfs July 14, 15.

1940-51: Maximum discharge, 32,000 cfs Mar. 14, 1941 (gage height, 15.1 ft), from 

rating curve extended above 3,000 cfs on basis of slope-area determination of peak flow, 

confirmed by sDope of rating developed in 1951 from measurements to 27,000 cfs; no flow 

for short periods in several years.

Remarks . Records excellent except those for Aug. 28-30, which are good. Small diversions 

above station for irrigation. Discharge measurements generally made twice a month 

except that 12 measurements were made during August, mostly on flood flows.

Revisions (water years ).--W 879: 1937-38. W 1049: 1916-17, 1922, 1926, 1935.

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

773

2.9

2.9

2.9

2.9

3.3

2.9

2.9

3.3

3.3

3.3

3.3

2.3

1.9

1.7

T75

1.9

1.9

2.1

2.1

2.1

2.1

2.3

2.1

2.3

2.3

2.3 

2.3

2.3

2.3

79.0

2.55

157

Nov.

2.6

s'.3

3.6

3.6

3.6

3.6

3.6

4.2

4.5

4.9

4.9

4.9

5.5

7.3

11

TT

10

10

9.6

9.6

9.6

9.6

8.6

8.2

7.3

6.8

7.8 

7.8

6.8

196.7

6.56

390

Dec.

7.8

a!2

8.2

8.2

9.1

9.1

9.1

9.1

11

11

10

9.1

9.6

9.6

11

11

12

11

11

11

13

T?

13

13

11

11

11 

11

11

11

322.3

10.4

639

Jan.

12

TS

14

14

13

13

12

12

12

12

12

15

16

15

14

14

15

16

15

14

14

14

14

14

14

14

14

12

14

123

T2S

643

20.7

1,280

Feb.

66

35

33

34

34

32

29

27

26

24

22

20

19

18

17

16

15

16

18

16

16

14

T5

16

29

37

37

_

-

727

26.0

1,440

Mar.

34

37

42

46

55

62"61

56

54

56

52

47

41

33

29

29

31

32

32

29

27

"5J 24

25

25

28

32

31 

29

26

25

1,154

37.2

2,290

Apr.

24

22

21

22

26

28

27

29

30

32

30

26

25

20

20

18

17

T7

20

22

25

23

22

23

19

21

22

20 

22

Ji§

-

711

23.7

1,410

May

81

77

89

110

m

81

59

48

40

35

30

26

25

26

29

32

31

28

27

26

26

23

21

19

15

12

12

11 

9.2

8.2

1.0

1,166.4

37.6

2,310

June

6.1

5.7

6.1

6.6 "575"

5.7

5.7

5.3

4.9

4.3

4.3

3.8

4.0

4.3

3.1

3.1

3.1

2.8

2.1

2.1

2.0

1.8

2.0

1.8

1.8

1.5

1.5

1.4 

1.3

T7S

-

106.1

3.54 '210

July

1.1

1.1

.8

.8

1.0

1.1

1.1

.8

.6

.6

.6

.6

.6

.5

75

.6

1.7

15

2*. 7

1.4

1.2

1.1

1.2

1.4

1.8

1.8

1.6

1.9 

1.9

2.7

11

60.8

1.96

121

Aug.

8.6

56

84

39

21

9.4

5.5

5.2

4.5

3.9

3.2

3.2

2.9

2.9

2.6

2.4 275

38

11

188

30

18

16

11

8.4

7.3

347

14.700 

12,900

4,370

927

33,828.4

1,091

67,100

Sept.

446

269

186

133

96

78

66

55

46

42

36

34

32

29

27

25

24

21

20

17

16

15

14

13

13

12

10

T5 

33

36

-

1,854

61.8

3,680

Calendar year 1950: Max 579 Kin 0.4 Mean 32.2 Ao-ft" 23,280

Water year 1950-51: Max 14,700 Mln 0.5 Mean 112 Ac-ft 81,030

Peak discharge (base, 1,700 cfa). Aug. 28 (11:30 a.m.) 31,100 cfs (14.10 ft).
GILA RIVER BASIN 451

Reservoir system on Salt River at and below Roosevelt Dam, Ariz.

Location.--This system comprises four storage reservoirs created by four separate dams on 

Salt River; Roosevelt Lake, formed by Roosevelt Dam, in sec. 20, T. 4 N.^R. 12 E., 

unsurveyed; Apache Lake, formed by Horse Mesa Dam, 17 miles downstream from Roosevelt 

Dam; Canyon Lake, formed by Mormon Flat Dam, 27 miles (revised) downstream from Roosevelt 

Dam; Sahuaro Lake, formed by Stewart Mountain Dam, 37 miles (revised) downstream from 

Roosevelt Dam.

Drainage area. 6,220 sq mi, approximately, at Stewart Mountain Dam.

Records available. July 1910 to September 1951 (prior to October 1934, contents at end of 

each month only, published in Water-Supply Paper 1049).

Gages.--Roosevelt Lake: water-stage recorder operates above elevation 2,024 ft, staff gage 

used below; Apache Lake: water-stage indicator in power plant connected to long distance transmitter on lake since April 1949. Prior to that date staff gage or reference 

mark; Canyon and Sahuaro Lakes: mercury column gages.

Extremes.--Maximum contents of system during year, 302,300 acre-ft Oct. 1; minimum contents, 

45,920 acre-ft Aug. 26.

1910-51: Maximum contents, 1,764,000 acre-ft May 22, 1941; minimum contents, 20,680 

acre-ft Sept; 16, 1940.

Remarks.--Total capacity of the four reservoirs is 1,755,000 acre-ft, divided as follows: 

Roosevelt Lake, 1,382,000 acre-ft; Apache Lake, 245,000 acre-ft; Canyon Lake, 58,000 

acre-ft; Sahuaro Lake, 70,000 acre-ft. Dams forming these reservoirs were built as 

follows: Roosevelt 1905-11; Horse Mesa 1924-27; Mormon Flat 1923-25; Stewart Mountain 

1928-30. Records given herein represent usable contents. Dead storage negligible. 

Water from this system is used for irrigation of Salt River Valley and for generation of 

power. The four dams forming these reservoirs completely develop fail in Salt River 

from Roosevelt Lake to Stewart Mountain Dam. Elevation of water surface varies from 

1,422.0 ft, sill of lowest outlet in Stewart Mountain Dam, to 2,136 ft, top of spillway 

gates in raised position on Roosevelt Dam. Since 1910, spill over Roosevelt Dam because 

of capacity storage has occurred only during the following periods: Apr. 15 to June 21, 

1915, Jan. 19 to May 30, 1916, Apr. 21 to June 7, 1917, Feb. 17 to June 3, 1920, and Apr. 

13 to July 24, 1941.

Cooperation. Records of daily contents furnished by Salt River Valley Water Users' Association.

Contents at 12 p.m., in thousands of acre-feet, water year October 1950 to September 1951

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

Oct.

302.3

300.7

298.5

297.3

297.0

296.3

295.9

295.6

294.7

293.8

292.8

291.8

290.6

289.5

288.7

287.6

286.5

285.5

284.4

283.4

282.6

281.9

281.3

281.0

279.8

278.9

278.0

277.5

277.0

276.6

275.8

Nov.

275.1

274.4

273.8

273.1

272.7

272.2

271.1

270.0

269.2

268.4

267.8

267.6

267.3

266.9

266.5

266.1

265.7

265.5

265.4

265.0

265.1

265.4

265.6

265.7

265.8

266.0

266.1

266.4

266.4

266.6

-

Dec.

266.7

267.0

267.3

267.6

267.4

266.9

266.6

266.2

265.9

265.5

265.0

264.5

264.0

263.5

263.1

262.6

262.2

261.9

262.0

262.2

262.6

262.4

262.8

263.1

263.3

263.2

262.4

261.4

260.2

259.0

258.1

Jan.

256.8

256.4

256.0

256.1

256.7

257.1

257.7

258.0

258.2

258.5

258.7

259.3

259.5

259.9

260.3

260.6

260.9

261.2

261.3

261.8

262.1

262.4

262.6

262.9

263.3

263.5

263.7

264.0

264.5

265.5

266.0

Feb.

266.3

266.6

266.9

267.2

267.5

267.7

268.0

268.3

268.5

268.8

269.0

269.2

269.4

269.7

269.8

270.1

270.4

270.6

270.9

271.3

271.3

270.9

270.5

270.1

270.5

270.8

271.0

271.4

_

-

Mar.

271.7

272.0

271.8

271.8

271.7

271.5

271.0

270.3

269.8

269.1

268.5

267.8

267.1

265.7

264.1

262.7

261.0

259.4

257.3

256.1

254.3

253.2

251.9

250.7

249.8

248.9

247.3

245.9

244.7

243.4

242.5

Apr.

241.3

240.2

238.6

237.1

236.3

235.8

235.6

235.1

235.8

235.9

234.6

233.8

232.6

230.9

230.9

230.1

228.9

227.8

226.8

226.2

225.9

225.4

225.8

225.7

224.8

224.1

224.3

224.4

223.9

223.3

-

May

225.2

226.5

227.0

227.2

227.1

227.5

228.3

229.0

229.8

230.5

230.3

229.8

229.4

229.0

229.2

229.7

230.5

231.1

231.8

232.1

232.0

231.6

231.0

230.3

229.4

229.4

228.7

229.1

227.4

225.7

223.6

June

221.6

220.2

218.6

217.3

215.6

213.4

211.5

209.2

207.8

206.1

204.4

202.9

200.8

198.6

196.4

194.5

192.6

190*9

188.9

186.6

183.9

181.3

178.9

176.7

174.7

172.4

169.7

166.8

163.9

161.6

-

July

159.2

157.0

154.9

152.6

150.1

147.9

145.6

143.4

140.9

138.2

135.0

131.9

128.8

126.0

123.4

121.0

118.5

116.0

113.0

110.3

107.7

105.4

103.6

101.1

98.59

96.19

93.79

92.09

91.06

90.19

89.26

Aug.

87.89

87.31

87.83

88.08

88.47

88.45

87.50

86.80

85.35

83.57

81.52

79.62

77.60

75.29

72.38

69.46

66.71

64.06

61.87

60.32

58.15

55.98

53.27

50.50

47.83

45.92

58.74

111.1

161.5

183.0

189.6

Sept.

192.4

194.9

196.5

197.3

197.8

198.3

199.4

200.6

200.7

200.8

200.8

201.1

201.4

201.6

202.6

203.8

203.2

203.2

203.4

203.1

203.4

203.6

203.3

203.8

204.4

204.8

205.7

206.8

205.7

205.9

-
452 GILA RIVER BASIN

Salt River below Stewart Mountain Dam, Ariz.

Location. Lat 33°33'00", long. Ul°34'35" , in N|NW^ sec. 6, T. 2 N. , R. 8 E. , unsurveyed, 

on left bank 3j miles downstream from Stewart Mountain Dam and 6 miles upstream from 

Verde River.

Drainage area. 6,240 sq mi, approximately, of which 22 sq mi is below Stewart Mountain 

uam.

Records available. October 1934 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 1,370 ft (from topographic map). Prior 

fo Jan. 21, 1950, water-stage recorder at site 2* miles upstream at datum 1,396.33 ft 

abo^e mean sea level, datum of 1929.

Average discharge. --17 years, 891 cfs.

Extremes. Maximum discharge during year, 2,200 cfs July 19 (gage height, 5.02 ft); mini- 

 cfs Set. 22-27.

15.97 ft, site

ys in January

. 

mum daily, 8.3 cfs Sept. 22-27.

1934-51: Maximum discharge, 11,700 cfs May 7, 1941 (gage height, 15.97 

and datum then in use); minimum, 3 cfs Jan. 8-20, 1935, and for several da 

and February 1943 .

Remarks . Records excellent except those below 50 cfs, which are good. Discharge measurements generally made once a week. Plow regulated at Stewart Mountain Dam and three 

other dams (combined capacity, 1,755,000 acre-ft, see preceding page). Entire flow is 

diverted at Granite Reef Dam, 10 miles downstream, for irrigation in Salt River Valley. 

Records of chemical analyses and water temperatures for the water year 1951 are given 

in Water-Supply Paper 1200.

Rating tables, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

Oct. 1 to Jan. 4

2.1

2.2

2.3

2.4 

2.6

2.8 164

3.0 270

3.5 600

4.0 1,020

4.5 1,540

2.1

2.2

2.3

2.4 

2.6

Jan. 4 to Sept. 30

2.8 

3.0 

3.5 

4.0 

92 5.0

175

280

615

1,060

2,140

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

780

858

1,050 

1,000

867

764

638

570

570

645

652

652

652

668

600

592

668

660

608

622

548

448-

448

429

511

592

548

469

324

294 4"50

19,197

619

38,080

Nov.

511

469

429 

422

318

336

638

652 575

422

324

169

£13

336

348

248

294

248

242

225

62

20

14

12

10

10

10

10

10

10

-

7,590

253

15,050

Dec.

10TO"

10 

10

252

384

354

3B6

366

384

403

429

455

416

422

448

403

373

33

19

16

14

13

13

13

41

448

615

755

747

683

8,905

287

17,660

Jan.

683

¥03

312 

81

16

12

10

10

10

10

10

12

11

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

10

19

13

1,772

57.2

3,510

Feb.

10

TO

10 

10

10

10

12

13

13

13

13

13

14

14

13

13

13

14

15

15

85

394

3S3

346

61

17

15

14

_

_

-

1,574

56.2

3,12O

Mar.

13

36

322 

322

304

310

413

510

518

518

502

532

695

898

1,080

,090

,090

,090

,100

,200

1,200

1,180

1,110

965

729

936

1,120

984

965

1,110

994

23,836

769

47,280

Apr.

834

789

1,020 

 1,120 750"

488

292

286

328

465

852

936

936

712

754

754

984

974

956

704

525

439

439

439

439

432

432

370

316

214

-

19,009

634

37,700

May

39

19

51 

358

370

328

310

328

346

388

400

587

608

520

364

148

19

16

14

ZZB

322

532

631

600

548

400

400

413

879

1,090

1,220

12,476

402

24,750

June

1,230

1,090

974 

898

1,080

1,170

1,180

1,100

1,070

1,020

918

1,010

1,250

1,430

1,390

1,230

1,080

1,060

1,210

1,370

1,560

1,500

1,320

1,240

1,140

1,340

1,550

1.660

1,640

1,570

37,280

1,243

73,940

July

1,320

1,300

1,320 

1,280

1,310

,270

,340

,340

,420

,580

,750

,700

,760

,700

,600

,550

,720

,680

,710

,590

,440

,280

,240

,460

,610

,640

,480

1,030

754

687

663

43,524

1,404

86,330

Aug.

870

780

425 

154

103

232

562

623

898

1,050

1,140

1,070

1,240

1,500

1,740

1,740

1,660

1,580

1,340

1,250

1,330

1,410

1,540

1,650

1,570

1,430

1,180

218

117

38

25

30,465

983

60,430

Sept.

19

TT

15

13

12

11

11

11

10

10

10

10

10

10

9.4

9.4

8.8

8.8

8.8

8.8

9.4

8.3

BTS

8.3

8.3

8.3

8.3

9.4

9.4

8.8

309.8

10.3

614

Calendar year 1950: Max 1,750 Min 10 Mean 729 Ac-ft 528,000

Water year 1950-51: Max 1,760 Mln e.3 Mean 554 Ac-ft 408,500
GILA RIVER BASIN 

Verde River near Clarkdale, Ariz.

453

Location.--Lat 34°50', long. 112°03', in seo. 28, T. 17 N., R. 3 E., on left bank 4 miles 

downstream from Sycamore Creek and 4 miles north of Clarkdale.

Drainage area.--3,530 sq mi, approximately (includes 344 sq mi in Aubrey Valley Playa, a 

closed basin).

Records available.--June 1915 to July 1921 (discontinued).

Gage.--Water-stage recorder. Altitude of gage is 3,460 ft (from topographic map). Datum 

lowered 0.65 ft Dec. 8, 1917.

Extremes.--1915-21: Maximum discharge, 50,600 ofs Feb. 21, 1920 (gage height, 19.1 ft), 

from rating curve extended above 2,500 cfs on basis of velocity-area determination at 

35,000 cfs; minimum, 55 cfs Aug. 31 and Sept. 1, 1920.

Remarks.--Diversions for irrigation of about 3,f acres above station in 1947, mostly by

pumping from ground water.

Cooperation. Gage-height record and many discharge measurements furnished by United Verde 

t'opper Company.

Revisions.--Revised figures of discharge for periods in the water years 1917 and 1920 are 

given herewith. They supersede figures published in Water-Supply Papers 459, 509, and 

1049.

Day 

(water year)

1916-17

May 22 .

23. , .

24 ....

25. ...

26.. ..

27. ...

28. ...

29. ...

30. ...

31. ...

June 1 ....

2. ...

3. ...

4. ...

5 , .

6. ...

7 ....

8. ...

9....

10. ...

11. ...

12. ...

13....

14. ...

15.. ..

16. ...

17. ...

18.. ..

19. ...

20. ...

21... .

22. ...

23 ....

Discharge 

(cfs)

105

'-*, o

B^

88

88

88

90

88

88

90

88

85

88

90

88

88

88

88

90

86

85

88

86

86

86

85

85

85

83

86

88

86

86

Month

June 1917. ....................

July. .........................

August ........................

September .....................

February 1920 .................

March. ........................

Water year 1919-20. .........

Calendar year 1920. .........

Day 

(water year)

1916-17

June 24 .....

25. ....

26. ....

27. ....

28. ....

29 .....

30. ....

July 1 .....

2. ....

3. ....

4. ....

5. ....

6. ....

7. ....

8. ....

9.... .

10. ....

11. ....

12. ....

13. ....

14. ....

15. ....

16. ....

17. ....

20 .....

21. ....

22. ....

23. ....

24. ....

25. ....

26 .....

27. ....

28. ....

Discharge 

(cfs)

88

85

86

85

83

86

83

90

107

107

94

92

94

94

99

100

105

105

109

109

107

109

132

106

170

117

163

163

120

202

170

243

370

Cfs-days Maximum

2,590 88

4,553 370

6,060 820

2,792 120

70,661 15,000

6,770 80O

153,997 15,000

117,804 15,000

Day 

(water year)

1916-17

July 29 .....

30 .....

31. ....

Aug . 1 .....

2. ....

3. ....

4. ....

7. ....

8. ....

9 ......

10. ....

11. ....

12. ....

Sept. 23. ....

24. ....

25.... .

26. ....

27. ....

28. ....

29. ....

30 .....

1919-20

Feb. 22.. ...

23. ....

24..'. ..

25. ....

26 . . I . .

27 .....

28. ....

Mar . 1 .....

2. ....

3.....

4. ....

Discharge 

(cfs)

188

186

184

294

153

132

126

210

160

160

200

170

160

120

110

105

100

95

90

88

86

"\

1

1

\ 4,000

1

J"J

> 800

J

Minimum Mean nun in

83 86.3 5,140

90 147 9,030

90 195 12,020

79 93.1 5,540

136 2,437 140,200

73 218 13,430

55 421 305,500

\ 55 322 233,700

256684 O - 53 - 30
454 aiLA RIVER BASIN

Oak Creek near Cornville, Ariz.

Location. Lat 34°46', long. 1110 53', in SE^ sec. 23, T. 16 N., R. 4 E., near left bank 

on downstream side of pier of county highway bridge, 0.2 mile upstream from Page Springs, 

4 miles northeast of Cornville, and 11 miles upstream from mouth.

Drainage area. 357 sq mi.

Records available.--July 1940 to September 1945, April 1948 to September 1951. 

Qage. Water-stage recorder. Altitude of gage is 3,470 ft (from topographic map). 

Average discharge.--8 years (1940-45, 1948-51), 94.0 cfs.

Extremes. Maximum discharge during year, 3,440 cfs Aug. 29 (gage height, 8.12 ft); mini- 

 mum, 13 cfs July 14, 15 (gage height, 2.14 ft).

1940-45, 1948-51: Maximum discharge, 6.400 cfs Oct. 19, 1949 (gage height, 10.3 ft 

in gage well, floodmarks on banks, 11.7 ft); minimum, 6 cfs July 27, 1940 (gage height, 

1.98 ft).

Maximum stage known, 23 ft Mar. 3, 1938, from floodmarks.

Remarks. Records good. Several small diversions above station for irrigation. 

Revisions (water years).--W 1149: 1948(M).

Rating table, water year 1950-51 (gage height, in feet, 

and discharge, in cubic feet per second)

2.1

2.5 

3.0

3.5 

4.0 

5.0 

6.0

224

380

855

1,590

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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

21

21

21

23

23

21

22

22

22

23

25

25

24

25

26

26

26

27

27

28

29

30

29

*28

28

760

24.5

1,510

Nov.

29

29

29

31

30

30

30

29

29

30

32

36

37

40

48

44

41

41

40

4O

40

37

37

39

39

39

37

34

*34

32

-

1,063

35.4

2,110

Dec.

34

36

36

36

36

36

36

36

36

36

34

34

35

36

36

36

35

35

35

35

35

*35

35

34

34

34

34

35

*35

35

41

1,096

35.4

2,170

Jan.

41

40

39

39

36

39

36

37

35

36

37

42

42

40

40

40

39

39

37

37

37

36

35

36

36

36

36

35

35

64

65

1,217

39.3

2,410

Feb.

41

39

37

36

*36

36

36

36

36

37

37

36

36

36

36

36

37

37

36

35

*34

34

34

41

46

48

4?

42

_

-

1,059

, 37.8

2,100

Mar.

41

42

42

41

40

*40

39

39

39

80

110

T4

50

56

74

69

66

56

48

39

36

35

33

32

30

30

29

28

33

34

34

1,439

46.4

2,850

Apr.

35

34

34

32

33

44

. 45

45

35

33

*32

32

32

31

32

31

29

26

26

36

35

32

30

29

29

35

39

33

37

58

1,034

34.5

2,050

May

67

173

530

421

130

79

54

41

42

40

*31

27

29

32

40

39

36

48

37

39

30

26

26

25

23

21

20

20

18

20

19

2,183

70.4

4,330

June

20

19

21

21

21

20

19

20

20

19

18

18

*18

19

18

19

19

18

18

18

19

19

18

18

18

17

18

18

17

16

561

18.7

1,110

July

15

14

15

15

14

14

15

16

16

16

16

15

15

15

15

16

16

18

18

17

16

16

17

18

21

*22

2T

21

19

18

16

516

16.6

1,020

Aug.

19

23

25

26

27

23

21

20

20

19

19

18

17

Tr

17

17

17

17

21

21

21

21

*21

21

21

20

20

92

*1,190

*816

172

2,819

90.0

5,590

Sept.

92

*54

44

39

35

32

48

58

60

60

54

45

39

35

34

31

28

28

27

26

26

25

24

21

*2T

22

22

21

23

27

1,101

36.7

2,180

Calendar year 1950 : Max 956 Mln 13 Mean 57.4 Ac-ft 41,550

Water year 1950-51 : Max 1,190 Mln 14 Heart 40.7 Ac-ft 29,430

Peak discharge (base, 1.500 cfa).--Aus. 29 (8 p.m.) 3,44o cfs (8.12 ft). 

* Discharge measurement made on this day.
GILA RIVER BASIN 455

Verde River at Camp Verde, Ariz.

Location. Lat 34°34'25", long. 111 0 51'25", in SE£ sec. 30, T. 14 N., R. 5 E. , at highway cridge just upstream from Beaver Creek and 1 mile north of Camp Verde.

Drainage area. 4.220 sq mi, approximately (Includes 344 sq mi in Aubrey Valley Playa, 

a closed oasin).

Records available. December 1912 (gage heights and discharge measurements), January 1913 

to March iaau (discontinued).

Gage.--Chain gage after Nov. 12, 1915. Prior to Nov. 12, 1915, staff gage at same site 

 at datum 1.80 ft lower. Altitude of gage is 3,070 ft (from topographic map).

Average discharge. 6 years (1913-19) 435 cfs.

Extremes. 1913-20: Maximum discharge not determined, probably exceeded 60,000 cfs Feb. 

21, i920, from comparison with related stations (figure published in Water-Supply Paper 

509 considered to be in error); minimum observed, 31 cfs June 28, 29, 1914.

Remarks. Diversions for irrigation above station.

Revisions. Revised figures of discharge for the water years 1914-15, 1917-20, are given 

Herewith. They supersede figures published in Water-Supply Papers 359, 389, 409, 459, 

479, 509, and 1049.

Day 

(water year)

1913-14

Oct. 1.....

2. ....

3.....

4.... .

5. ....

6.....

7.....

8.....

9. ....

10. ....

11.. ...

12.....

13... ..

14.....

15. ....

16.. ...

17.....

18.....

19. ....

20. ....

21.....

22.....

23. ....

24. ....

25.. ...

26. ....

27. ....

28... ..

29. ....

30.....

31. ....

Nov. 1.....

2.....

3. ....

4. ....

5.....

6.. ...

7.. ...

8. ....

9. ....

10 .....

11. ....

12. ....

13.....

14.....

15.....

16.....

17.....

18. ....

19. ....

20... ..

21.....

Feb. 18.....

19 .....

Discharge 

(cfs)

95

95

200

200

140

125

140

125

125

125

125

110

110

95

95

95

95

95

95

95

95

95

95

95

95

95

95

110

110

110

95

95

95

95

95

100

105

110

115

120

120

125

160

160

160

160

160

180

175

170

185

200

4,400

4,700

Day 

(water year)

1913-14

Feb . 20 .....

21.....

22.. ...

23.....

24. ....

Mar . 1 .....

2.....

3.. ...

4. ....

5. ....

6. ....

8.! ...

9. ....

10 .....

11.....

12.....

13. ....

14.....

15.....

16.. ...

17.. ...

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 .....

18. ....

Discharge 

(cfs)

4,600

3,700

6,100

3,200

1,800

400

715

645

515

400

455

485

485

485

548

455

548

455

350

300

300

255

235

215

195

195

215

215

175

158

125

110

110

96

85

175

175

140

140

110

96

96

85

85

96

96

96

85

69

64

58

62

65

58

Day 

(water year)

1913-14

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.. ...

26. ....

27. ....

28.. ...

29. ....

30. ....

1914-15

July 4 .....

5. ....

6. ....

7.....

8.. ...

9. ....

10 .....

11.....

18.....

19. ....

20.....

21 .....

22.....

23. ....

24. ....

25. ....

26. ....

27.....

28. ....

29 .....

30.. ...

31. ....

Discharge 

(efs)

255

175

140

125

110

96

85

85

85

85

85

85

85

85

85

75

75

75

75

75

75

65

65

65

65

65

65

75

125

325

60

60

60

60

60

60

60

60

60

85

120

160

225

360

540

905

1,340

790

530

380

280

230
456 GILA RIVER BASIN

Revised figures of discharge. In cubic feet per second, of Verde River at Camp Verde, Arlz., 

1913-15, 1916-20 Continued

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

140

130

140

140

150

1,050

3,980

2,750

2,250

1,700

1,000

300

233

212

233

192

173

173

173

192

173

173

154

154

154

154

154

154

154

154

154

Nov.

135

135

135

135

135

135

135

135

135

135

135

135

135

135

135

135

135

135

154

154

154

154

154

154

154

154

154

154

154

154

-

Dec.

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

154

172

192

192

192

192

192

Jan.

192

192

192

192

212

192

192

192

192

192

192

192

192

192

192

192

212

212

212

2,150

2,500

2,050

1,100

610

325

233

233

233

233

212

212

Feb.

192

192

192

192

192

233

255

277

277

300

350

350

375

325

277

233

233

255

233

233

233

233

233

515

820

1,250

1,520

1,060

_

_

-

Mar.

820

550

430

375

375

490

430

430

490

460

515

490

430

375

322

300

300

300

430

680

900

1,020

940

680

820

1,680

1,630

2,050

2,680

2,900

2,200

Apr.

1,200

820

615

490

490

490

715

550

580

580

550

490

550

460

430

490

4,000

6,000

5,300

3,950

5,000

5,900

7,600

6,000

5,750

4,600

4,150

3,800

2,900

2,700

May

1,860

900

780

780

500

440

380

330

302

410

330

208

168

168

168

168

168

187

230

255

230

208

208

208

208

208

187

187

168

168

149

June

149

149

149

149

149

130

130

113

113

113

113

96

96

96

96

80

80

80

80

80

96

96

80

80

80

80

80

80

80

80

-

July

96

96

96

96

113

208

187

187

149

149

130

113

130

113

96

113

113

355

255

208

208

187

149

130

500

568

440

280

280

208

330

Aug.

230

208

208

705

1,400

780

440

280

280

380

305

280

1,400

705

410

355

280

230

230

230

208

187

149

149

149

130

130

130

113

113

96

Sept.

96

96

96

80

80

80

80

80

130

280

280

168

355

255

208

187

168

168

168

168

168

168

208

187

168

168

168

149

149

149

-

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

148

130

130

130

130

130

130

115

115

115

115

115

130

115

115

130

130

130

130

130

130

130

130

130

130

130

130

130

115

115

115

Nov.

 115

115

115

115

115

115

115

115

130

115

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

-

Dec.

130

130

130

130

130

130

125

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

Jan.

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

148

148

210

195

167

167

155

148

Feb.

148

148

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

130

167

167

167

188

1,800

 3,000

1 200

800

_

_

-

Mar.

600

450

400

350

300

300

3,000

15,000

8,000

1,700

3,150

13 , 000

11 , 500

1,400

1,050

660

530

385

265

235

210

210

180

180

180

160

160

160

160

160

135

Apr.

265

208

182

182

182

160

160

160

160

137

137

137

137

137

137

137

137

137

137

137

117

117

117

137

117

117

117

98

98

98

-

May

98

98

98

98

80

80

80

80

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

64

50

50

June

50

50

50

50

50

50

50

37

37

37

50

50

50

50

50

50

50

50

50

60

60

60

80

120

120

90

72

48

48

48

-

July

48

48

48

72

72

48

48

72

72

100

132

150

150

150

132

150

150

115

115

115

168

185

168

150

132

100

100

85

85

72

60

Aug.

60

60

60

80

250

215

319

480

340

317

283

275

200

450

350

250

156

122

107

107

94

94

94

94

80

69

69

58

58

40

40

Sept.

40

49

58

112

410

170

138

107

94

94

94

80

80

80

69

69

62

58

58

58

58

58

58

58

58

58

58

49

49

49

-
GILA RIVER BASIN

Revised figures of discharge, in cubic feet per second, of Verde River at Camp Verde, Ariz., 

1913-15, 1916-20 Continued

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

49

58

58

58

69

69

69

69

69

SO

SO

BO

69

80

80

SO

80

93

93

13B

120

107

93

93

93

93

93

93

93

93

107

Nov.

107

107

107

107

120

138

120

120

107

107

120

136

13B

13B

13B

13B

13B

13B

138

13B

13B

107

120

120

120

120

107

107

107

107

Dec.

93

93

93

93

93

120

13B

170

180

190

190

190

190

170

170

170

170

170

153

153

153

170

153

155

153

138

13 B

13 B

13 B

13B

145

Jan.

138

138

138

138

13B

138

13B

138

138

138

13B

120

120

120

120

120

120

120

107

107

107

107

107

107

107

120

138

13B

138

13 B

170

Feb.

210

210

170

170

170

153

13B

138

13B

138

13B

153

170

170

153

153

153

165

163

153

153

150

145

140

140

13B

13B

138

.

«

-

Mar.

138

13B

13B

13B

138

. 200

260

350

1,050

1,140

1,430

1,430

1,230

720

5 BO

BBO

1,530

1,530

2,060

2,&80

2,620

Apr.

2,750

2,530

1,870

1,760

920

840

662

400

265

230

215

215

166

175

175

150

136

125

100

90

73

73

73

73

67

67

56

56

56

62

-

May

56

54

50

54

46

46

50

46

46

50

50

46

42

46

42

42

42

46

42

42

42

42

46

4fr

42

42

42

42

42

42

42

June

44

44

44

44

44

44

44

44

44

44

44

44

44

44

44

43

43

43

43

43

43

43

43

43

43

43

43

43

43

43

-

July

43

43

45

326

138

136

150

265

150

150

162

425

1,360

1,760

2,530

1,460

1,670

3,410

1,670

1,560

1,610

1,270

960

598

550

230

215

1,540

1,360

660

305

Aug.

400

1,460

920

450

305

248

246

246

248

. 275

75

150

236

Sept.

210

210

210

210

210

210

297

560

520

485

453

360

250

196

196

175

175

175

175

146

146

146

175

148

148

125

125

465

275

224

-

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

Oct.

173

173

173

146

148

146

146

146

146

146

146

146

148

146

148

146

146

146

146

146

148

146

146

173

2,750

1,450

1,670

1,140

400

215

175

Nov.

162

136

136

150

150

150

150

150

150

150

136

138

138

138

136

136

138

138

138

162

188

175

166

155

175

565

16,000

6,660

2,530

2,080

-

Dec.

1,900

1,500

1,000

1,000

2,060

1,760

1,500

1,250

610

410

325

290

225

225

225

225

215

215

215

215

215

200

200

200

200

200

200

200

200

200

200

Jan.

200

200

255

465

4,620

4,020

1,150

526

437

343

300

273

255

255

255

255

290

535

490

475

900

610

650

1,350

930

660

437

410

410

437

437

Feb.

437

490

740

526

410

343

343

3,200

6,200

7,380

4,650

3,450

3,100

2,680

1,540

610

490

490

970

3,620

16,300

22,200

12,000

6,200

2,330

970

610

810

610

_

-

Mar.

810

730

2,250

1,550

1,220

630

660

500

430

430

465

470

430

400

335

305

305

305

260

260

280

280

366

335

335

366

400

430

465

740

970

Apr. May June July Aug. Sept.
458 GILA RIVER BASIN

Revised monthly discharge, In cubic feet per second, of Verde River at Camp Verde, Ariz., 

1913-15, 1916-20--Contlnued

Month

Calendar year 1913 ..........

February 1914 .................

September .....................

Calendar year 1914 ..........

Water year 1914-15. .........

Calendar year 1915 ..........

October 1916 ..................

December ......................

Calendar year 1916 ..........

September .....................

Water year 1916-17 ..........

October 1917 ..................

December ......................

September .....................

Water year 1917-18. .........

December ......................

Calendar year 1918 ..........

January 1919 ..................

September .....................

Water year 1918-19 ..........

December ......................

Calendar year 1919 ..........

Cfs-days

75,300

34,059

3,031

96,983

193,390

189,034

17,043

4,982

276,107

11,030

4,905

190,806

3,898

4,025

4 299

2,533

109,579

4,608

108,753

3,949 

4,348

10,215

7,450

103,574

11,652

17,820

155,812

Maximum

3,620

6,100

325

6,100

3,400

3,400

3,980

192

_

1,520

355

7,600

148

130

410

15,000

190

15,000

170 

210

1,460

580

3,410

2,750

2,080

18,000

4,820

22,200

Minimum

95

38

131 

85

65

31

31

42

40

154 

135

154

100

192

192

300

430

80

96

80

80

115 

115

125

130

135

98

37

48

40

40

37

107

93

37

107 

138

138

58

42

43

75

125

42

148

138

200

42

200

343

280

Mean

206

1,216 

326

101

266

530

518

550 

143

161

754

446

394

855

2,572

102

351

164

523

126 

126

130

362

143

106

170

84.4

300

83.8

122

149

298

127 

155

723

482

45.5

43.5

877

330

248

284

376

1,121

575

427

756

3,810

578

Runoff In 

acre-feet

149,300

67,560

6,010

192,300

383,400

375,000

33,800

9,880

547,700

27,410

21,880

52,550

153,000

6,100

21,600

9,730

378,400

7,730 

7,470

7,980

8,580

20,080

127,300

8,530

4,280

3,410

6,530

10,450

5,020

217,400

5,160

7,250

9,140

215,700

7,830 

8,620

44,430

26,680

2,800

2,590

53,900

20,360

14,780

205, 500

23,110

66,700

35,300

309,100

46,470

219,200

35,540
GILA RIVER BASIN 

Beaver Creek at Camp Verde, Ariz.

459

L.ocation.--Lat 34°34'30", long. 111°51'30", In E| sec. 30, T. 14 N. , R. 5 E. , a quarter of 

a mile upstream from mouth and 1 mile north of Camp Verde.

Drainage area. 413 sq mi.

Hecoras available.--December 1912 to March 1920 (discontinued).

uage. atari gages, all within 600 ft of each other. Altitude of gage is 3,090 ft (from 

typographic map). Datum raised 0.9 ft Feb. 23, 1920, but gage heights converted to 

former datum.

Average discharge.--6 years (1913-1919), 122 cfs.

axcremes. laiz^ZO: Maximum discharge observed, about 17,000 cfs (revised) Feb. 22, 1920 

(gage height, 16.7 ft, affected by backwater from Verde River), from rating curve extended above 1,300 cfs by logarithmic plotting and comparison with related station; minimum observed, 4 cfs (revised) on several days in 1915 and 1919.

Remarks.--Several small diversions for irrigation above station. A small amount of water 

was sometimes discharged into creek above gage by irrigation ditch which diverts from 

Verde River above Beaver Creek. Stage-discharge relation affected by backwater from 

Verde River during short periods of most years.

Revisions. Revised figures of discharge for the water years 1913-16, 1918-20 are given 

nerewith. They supersede those published in Water-Supply Papers 359, 389, 409, 439, 

479, 509 and 1049.

Day 

(water year)

1912-13 

Mar . 13 .... 

Apr. 26.... 

27. ... 

28. ... 

29.... 

30. ... 

May 1 .... 

2... .

1913-14 

Feb. 18.... 

19.... 

20.. .. 

21. ... 

22.. .. 

23.. .. 

Mar. 16. ... 

17. ... 

18. ...

1914-15 

Oct. 21. ... 

Jan. 29 .... 

Mar . 3 .... 

7..., 

15. ... 

16... . 

17. ... 

18. ... 

19. ... 

20. ... 

21. ... 

22. ... 

23.. .. 

24. ... 

25. ... 

26.... 

27.... 

28. ... 

29.... 

30. ...

Discharge 

(cfs)

249 

8 

8 

8 

8 

8 

8 

8

3,000 

4,000 

1,850 

1,450 

1,800 

1,000 

130 

130 

130

4 

1,850 

250 

300 

680 

845 

785 

962 

1,220 

1,025 

845 

962 

1,025 

845 

1,950 

2,100 

1,800 

1,370 

900 

1,220

Day 

(water year)

1914-15 

Mar . 31 .... 

Apr . 1 .... 

2. ... 

3. ... 

4. ... 

5.... 

6. ... 

30....

1915-16 

Jan. 18.... 

19.... 

28. ... 

29....

1916-17 

Apr. 17. ... 

18. ...

1917-18 

Mar . 8 .... 

9.. .. 

10. ... 

11... . 

12. ... 

13. ...

1918-19 

Apr. 11.... 

12. ... 

13.. .. 

14. ... 

15.. .. 

16.... 

17. ... 

18. ... 

19. ... 

20. ... 

21. ... 

22... . 

23 ....

Month

Calendar year 1913. ............

February 1914

March ............................

Water year 1913-14 .............

October 1914 ..................... 

Calendar year 1914 .............

January 1915

April. ...........................

Water year 1 

Calendar yea

January 1916

r 1915. ............

Water year 1 

Calendar yea 

Water year 1

Water year 1 

Calendar yea

916-17. ............

r 1918. ............

April 1919 ....................... 

May .......

Water year 1 

Calendar year 1919. ............

March. ...........................

Discharge 

(cfs)

845 

785 

962 

962 

962 

900 

680 

3,000

6,000 

6,000 

3,000 

3,000

3,500 

3,500

7,000 

1,050 

700 

450 

6,000 

3,600

39 

33 

28 

28 

24 

21 

14 

14 

10 

10 

10 

10 

14

Cf s-days

3,887 

5,951 

- . .252. . . 

13,460

15,574 

4,455 

28,444

452 

28,578

3,240 

23,319 

14,743

67,209 

66,944

35,370 

18,850 

81,546 

83,280 

42,250

20,945 

27,319.0 

27,185.5

2,975 

305 

18,620 

36,026

39,474 

11,090

Day 

(water year)

1918-19 

Apr . 24 ..... 

25. .... 

26. .... 

27. .... 

28. .... 

29. .... 

30 ..... 

May 1 ..... 

2. .... 

3.... . 

4. .... 

5..... 

6. .... 

7. .... 

8. .... 

9. .... 

10 ..... 

11..... 

12..... 

13. .... 

14. .... 

15. .... 

16. .... 

17..... 

18. .... 

19. .... 

20..... 

21. .... 

22. .... 

23. .... 

24. .... 

25. .... 

26..... 

27. .... 

28. .... 

29. .... 

30..... 

31 .....

1919-20 

Feb. 21. ....

Maximum

300 

1,410 

- - - - 12 . . 

1,410

4,000 

540 

4,000

200 

4,000

1,850 

2,650 

3,000

3,000 

3,000

6,000 

3,500

7,000

632 

18 

1,820 

10,000

12,200 

2,000

Discharge 

(cfs)

14 

14 

13 

13 

13 

13 

13 

13 

14 

14 

13 

14 

14 

13 

13 

14 

13 

13 

13 

13 

13 

13 

18 

10 

13 

8 

8 

5 

5 

4 

4 

5 

5 

4 

4 

4 

4 . 

4

10,000

Minimum

12 

8 

. - - .8- - 

4

20 

25

5

4 

4

8 

180 

32

4

8

17

7 

7 

6

10 

7 

7

10 

4 

4 

4

4 

200

Day 

(water year)

1919-20 

Fet. 22 .... 

23.. .. 

24 .... 

25.... 

26. ... 

27... . 

28. ... 

29. ... 

Mar . 1 .... 

2. ... 

3. ... 

4. ... 

5. ... 

6.... 

7. ... 

8. ... 

9. ... 

10. ... 

11. ... 

12.. .. 

13. ... 

14. ... 

15... . 

16. ... 

17. ... 

18. ... 

19. ... 

20. ... 

21. ... 

22. ... 

23. ... 

24. ... 

25. ... 

26... . 

27. ... 

28. ... 

29. ... 

30... . 

31. ...

Mean

125 

198 

- . . .9.4. 

36.9

556 

144 

77.9

14.6 

78.3

105 

752 

491

184 

183

1,141 

650 

223 

228 

116

676 

74.8 

74.5

99.2 

9.8 

51.0 

98.7

1,361 

358

Discharge 

(cfs)

12,200 

7,000 

3,000 

900 

400 

350 

300 

250 

250 

2,000 

900 

500 

400 

350 

300 

270 

270 

300 

390 

390 

350 

300 

250 

250 

230 

210 

200 

200 

200 

200 

250 

220 

200 

200 

200 

210 

250 

350 

500

Runoff in 

acre-feet

7,710 

11,800 

- - -579. 

26,700

30,890 

8,820 

56,410

897 

56,670

6,430 

46,250 

29,240

133,300 

132,800

70,160 

37,390 

161,700 

165,100 

83,820

41,540 

54,180 

53,910

5,900 

605 

36,920 

71,440

78,300 

22,000

t Daily gage-height record discredited, monthly figures only available
GILA RIVER BASIN

KL -LZ .

prior to 1914)

Location.--Lat 34°21, long. lil°42', in sec. 36, T. ll| N., R. 6 E., unsurveyed, on left 

Dank 300 ft downstream from Childs power plant, 3§ miles upstream from Fossil Creek, and 

18 miles southeast of Camp Verde.

Drainage area.--5,090 sq mi, approximately (includes 344 sq mi in Aubrey Valley Playa, a 

closed casin).

Records available.--February 1911 to December 1912 (gage heights and discharge measurements), January 1913 to September 1914; October 1914 to September 1917 (gage heights 

only), discontinued.

Gage.--Staff gage. Altitude of gage is 2,610 ft (from topographic map).

Extremes (revised).--1913-14: Maximum discharge not determined; maximum daily discharge 

1U,2U<J crs ifeo. 22, 1914 (gage height, 13.75 ft), from rating curve extended above 600 

cfs on basis of high-water records at other Verde River stations; minimum daily, 100 cfs 

on several days in 1914.

Remarks. Water diverted from Fossil Creek for development of power enters river above

station and is included in records herewith. These diversions consist largely of spring 

flow of about 48 cfs. Diversions for irrigation above station.

Cooperation. Gage-height records furnished by Bureau of Reclamation except those for 1917 

wnicn were furnished by Arizona Power Company.

Revisions. Revised figures of discharge for the water years 1913-14 are given herewith. 

 Tfiey supersede figures published in Water-Supply Papers 359, 389, and 1049.

Day 

(water year)

1912-13

Mar . 6 ....

7. ...

8. ...

9. ...

10. ...

11. ...

12. ...

13. ...

14. ...

15....

16. ...

17....

IB. ...

19. ...

20. ...

21. ...

22. ...

23. ...

24. ...

25. ...

26. ...

29... .

30. ...

31. ...

Apr . 1 ....

2. ...

3. ...

4. ...

5. ...

6. ...

7. ...

8. ...

9. ...

10... .

11. ...

12.. ..

13... .

14. ...

15. ...

Sept. I....

2. ...

8. ...

Discharge 

' (cfs)

663

970

1,440

1,940

2,240

2,760

2,870

1,740

1,340

880

663

512

622

1,020

970

1,020

1,790

2,870

1,740

880

622

835

2,340

4,360

5,750

5,100

2,760

2,040

1,890

1,940

1,790

1,340

880

704

663

584

546

546

546

1,100

622

622

Day 

(water year)

1913-14

Jan. 18. ...

19 ....

20. ...

21. ...

26. ...

27. ...

28. ...

29. ...

30. ...

31. ...

Feb . 1 ....

2. ...

3. ...

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. ...

18....

Discharge 

(cfs)

2,980

1,590

1,020

704

2,700

2,140

4,240

2,040

1,060

747

622

622

546

6,490

7,760

7,190

6,140

10,200

5,560

2,540

2,190

1,240

925

704

512

1,020

1,200

790

546

512

790

880

790

747

925

747

512

447

388

360

360

388

Day 

(water year)

1913-14

Mar. 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. ...

18. ...

19. ...

20. ...

21. ...

22. ...

Aug . 30 ....

31. ...

Discharge 

(cfs)

388

360

315

278

278

246

278

262

182

170

170

182

205

218

337

360

262

218

193

170

159

149

140

131

131

131

123

115

107

107

107

107

107

107

100

2,820

622

Month

September .....................

Calendar year 1913 ..........

January 1914 ..................

August. .......................

Cf s-days

8,496

136,356

24,831

7,242

Maximum

1,100

5,750

4,240

2,820

Minimum

174

120

245

100

Mean

283

374

801

234

Runoff In 

acre-feet

16,850

270,500

49,250

14,360
GILA RIVER BASIN 461

Verde River below Tangle Creek, above Horseshoe Dam, Arlz.

Location. Lat 34°04'25", long. 111°42'50", in sec. 35, T. 9 N. , R. 6 E., unsurveyed, on

 left bank, in Tonto National Forest, l£ miles downstream from Tangle Creek, and 9 miles 

upstream from Horseshoe Dam.

Drainage area. 5,860 sq mi, approximately (including 344 sq mi in Aubrey Valley Playa, a 

closed Dasin) .

Records available. August 1945 to September 1951.

Gage. Water-stage recorder. Datum of gage is 2,029.0 ft above mean sea level, datum of T929.

Average discharge. 6 years (1945-51), 367 cfs.

Extremes.--Maximum discharge during year, 16.400 cfs Aug. 30 (gage height, 12.40 ft); minimum, 52 cfs July 10 (gage height, 1.25 ft), caused by power regulation on Fossil Creek.

1945-51: Maximum discharge, that of Aug. 30, 1951; minimum, that of July 10, 1951.

Greatest flood since 1924 occurred Mar. 3, 1938, discharge, 100,000 cfs (gage height, 

19.0 ft, from floodmarks), computed from comparison of peak discharge at other stations 

on Verde River.

Remarks.--Records excellent except those above 2,000 cubic feet per second, which are 

good. Diversions above station for irrigation of about 12,500 acres, some of which 

is by pumping from ground water. Discharge measurements made twice a month except 

that additional measurements are made during floods. Low flow slightly regulated by 

power plant 32 miles above station, using water from Fossil Creek. This station is 

above all major reservoirs on Verde River.

Rating tables, water year 195O-51 (gage height, In feet, 

and discharge, In cubic feet per second)

Oct. 1 to Apr. 16

1.5 76

2.0 151

2.5 269

3.0 424

May 3 to Aug. 28 Aug. 30 to Sept. 30

1.4 

2.0 

3.0 

4.C

67

156

420

825

5.0 1,430

2.0 

3.0 

4.0 

5.0

173

455

890

1,550

6.0 2,390

7.0 3,510

9.0 6,790

11.0 11,500

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Ac-ft

Oct.

T3"2" 124

137

134

139

142

144

146

146

146

149

153

146

149

144

134

155

160

164

157

164

162

164

168

170

172

168

170

174 

193

1ST

4,797

155

9,510

Nov.

187

187

185

174

172

183

183

187

187

178

183

187

198

205

218

223

225

228

223

223

225

225

228

231 ~TS5

218

218

215

218 

213

-

6,147

205

12,190

Dec.

210 213"

213

218

225

218

218

220

223

220

215

228

233

233

236

233

236

236

233

231

231

231

231

225

231

238

'538" 241

228 

225

236

7,047

227

13,980

Jan.

233

238

249

249

247

247

241

249

252

247

241

249

252

261

263

261

258

249

249

252

252

249

255

244

228

215

210

201

2^0 

319

340

7,720

249

15,310

Feb.

319

30T

286

278

284

284

263

252

244

236

225

m

258

252

252

247

249

252

255

247

249

244

233

244

263

289

295

292

-

-

7,337

262

14,550

Mar.

298

307

310

310

310

316

316

310

298

289

269

337

353

315

284

261

249

233

236

252

231

223

225

208

208

198

201

193

189 

187

180

8,091

261

16,050

Apr.

189

205

198

198

210

215

231

'232" 269

241

220

210

193

191

203

164

m

168

174

181

209

236

236

220

205

197

189

209

214 

220

-

6,221

207

12,340

May

322

317

449

1,020

965

524

381

298

221

183

158

142

140

131

162

205

226

226

224

210

194

191

185

176

164

145

136

123

121 

112

108

8,159

263

16,180

June

109

108

120

TOT?

106

103

98

98

102

106

105

100

95

89

84

82

80

77 50"

82

82

86

87

95

89

99

99

93

89 

88

-

2,837

94.6

5,630

July

83

80

80

80

69

84

83

77

69

82

68

73

82

79

74

98

91

108

150

96

86

91

122

142

98

89

95

108

118 

110

157

2,928

94.5

5,810

Aug.

185

262

444

279

284

290

236

203

185

166

145

131

120

126

109

102

103

254

136

106

98

108

120

118

138

173

468

5,270

11,500 

10,800

4,260

36,719

1,184

72,830

Sept.

1,420

865

605

480

403

362

356

329

289

256

237

217

205

177

163

159

144

144

142

140

137

137

132

132

132

121

125

121

126 

132

-

8,388

280

16,640

Calendar year 1950: Max 3,020 Mln 76 Mean 284 Ac-ft 205,600

Water year 1950-51 : Max 11,300 Mln 68 Mean 291 Ac-ft 211,000

Peak discharge (base, 4,000 efs).--Aug. 30 (3 p.m.) 16,400 cfs (12.40 ft).
462 GILA RIVER BASIN

Reservoir system on Verde River at and below Horseshoe Dam, Ariz.

Location.--This system comprises two storage reservoirs created by Horseshoe and Bartlett 

Dams on Verde River. Horseshoe Reservoir, formed by Horseshoe Dam, lat 33°S9'15", 

long. 111°42'45", in sec. 2, T. 7 N., R. 6 E., unsurveyed; and Bartlett Reservoir, 

formed by Bartlett Dam, lat 33°49', long. 111°38', in sec. 34, T. 6 N., R. 7 E., 

unsurveyed.

Drainage area. 6,160 sqmi, approximately, at Bartlett Dam.

Records available. July 1939 to September 1951. Prior to 1946, published as Bartlett 

Keservoir at Bartlett Dam.

Gages. Water-stage recorders on dam structures. Datum of gage on Horseshoe Reservoir is 

 T7900.00 ft and on Bartlett Reservoir, 1,609.46 ft above mean sea level, datum of 1929.

Extremes. Maximum contents during year, 76,380 acre-ft Sept. 5; minimum, 1,420 acre-ft

1939-51: Maximum contents, 206,200 acre-ft Apr. 17, 18, 1949; no storage at times 

when natural flow of river was passed through reservoir system.

Remarks. Horseshoe Reservoir is formed by earth- and rock-fill dam; dam completed and 

storage began Nov. 15., 1945. Bartlett Reservoir is formed by concrete multiple-arch 

dam; dam completed May 1939 and storage began Feb. 5, 1939. Total capacity of the 

two reservoirs is 322,300 acre-ft divided as follows: Horseshoe Reservoir, 142,800 

acre-ft between elevation 1,915.0 ft (sill of outlet gate) and 2,026.0 ft (top of 

spillway gates); Bartlett Reservoir, 179,500 acre-ft between elevation 1,619.46 ft 

(10 ft above sill of outlet gates) and 1,797.46 ft (top of spillway gates). New capacity tables based on sediment survey in fall of 1950 put into use May 1, 1951. No 

dead storage. Records given herein represent usable contents. Water is used for irrigation of Salt River Valley and for municipal supply.

Contents at 12 p.m., in acre-feet, water- year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

3,730

3,040

3,010

3,010

2,960

2,940

2,910

2,880

3,510

3,770

3,890

4,010

4,170

3,940

3,310

3,270

3,510

3,700

3,800

3,930

3,840

3,930

3,320

3,540

4,040

4,370

4,520

4,660

4,770

4,920

5,110

Nov.

5,280

5,440

5,580

5,690

5,770

5,910

6,060

6,220

6,380

6,490

6,620

6,790

7,040

7,300

7,580

7,870

8,060

8,240

8,420

8,500

8,170

7,880

7,610

7,260

6,820

6,390

5,990

5,590

5,140

4,710

~

Dec.

4,400

4,220

4,030

4,O60

4,510

4,920

5,300

5,690

6,080

6,460

6,840

7,240

7,670

8,090

8,500

8,890

9,300

9,400

8,700

8,110

7,990

7,750

7,210

6,670

6,170

5,550

5,240

4,890

4,540

4,220

4,270

Jan.

4,610

5,000

5,310

4,990

5,270

5,310

5,340

5,340

5,300

5,210

5,090

5,110

5,130

5,190

5,300

5,160

5,550

5,710

5,890

6,070

6,200

6,330

6,430

6,490

6,510

6,400

6,260

6,040

5,910

6,710

7,380

Feb.

7,640

7,900

8,160

8,460

8,780

9,150

9,480

9,780

10,050

10,310

10,590

10,850

10,960

10,770

9,720

9,700

9,520

9,690

9,720

9,440

9,130

9,160

9,280

9,540

9,740

9,940

10,130

10,240

-

-

-

Mar.

10,350

10,530

10,920

11,350

11,640

11,800

11,660

11,420

11,090

10,640

10,120

9,560

9,170

8,560

8,120

,970

,710

,630

,560

,600

,530

,430

,340

,300

,190

,060

,990

,890

,930

7,090

7,480

Apr.

7,870

7,930

8,170

8,380

8,470

8,650

8,920

9,230

9,330

9,370

9,610

9,880

10,010

9,950

9,770

9,530

9,370

9,150

9,030

8,890

8,930

9,160

9,350

9,250

8,940

8,740

8,800

8,900

8,980

9,050

Hay

8,660

8,340

8,070

9,270

10,520

10,860

10,840

10,660

10,130

9,360

8,560

8,140

8,010

7,930

7,970

7,620

7,230

6,830

6,390

6,460

6,410

6,330

6,240

6,140

5,960

5,720

5,160

4,420

3,860

3,740

3,730

June

3,750

3,750

3,770

3,740

3,740

3,200

3,370

3,400

3,420

3,450

3,470

3,490

3,480

3,440

3,400

3,360

3,340

3,310

3,280

3,250

3,220

3,180

3,160

3,130

3,100

3,060

3,020

2,990

2,920

2,740

July

2,550

2,380

2,220

2,080

2,000

1,940

1,870

1,790

1,710

1,660

1,620

1,590

1,540

1,500

1,460

1,420

1,450

1,450

1,470

1,540

1,540

1,510

1,540

1,570

1,620

1,630

1,660

1,720

2,010

2,200

2,370

Aug.

2,290

2,570

3,460

3,740

4,020

4,330

4,540

4,690

4,790

4,850

4,800

4,720

4,840

4,900

4,970

4,900

4,760

4,830

,740

,750

,640

,540

,440

,350

4,240

4,320

5,120

22,380

44,640

63,100

70,380

Sept.

72,870

74,410

75,340

75,990

76,380

76,200

75,490

74,440

72,890

69,630

66,600

63,580

60,120

56,930

54,070

51,530

49,050

46,600

44,230

41,870

39,930

38,400

37,350

36,360

35,230

34,150

33,130

32,230

31,710

31,200
GILA RIVER BASIN 463

Verde River below Bartlett Dam, Arlz.

Location.--Lat 33°48'30", long. 111°40'00", in NE£ sec. 6, T. 5 N., R. 7 E., on right

 bank 2-j miles downstream from Bartlett Dam and 3-5 miles upstream from Camp Creek.

Drainage area.--6,160 sq mi, approximately. 

Records available. August'1888 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 1,572.34 ft above mean sea level, datum of

 T929. prior to Feb. 17, 1925, staff gages at several sites about 20 miles downstream 

at various datums. Feb. 17, 1925, to Dec. 31. 1941, water-stage recorder at two sites 

above and within half a mile of Camp Creek, 3f miles downstream at various datums.

Average discharge.--63 T 

tiorsesnoe Keservoirs,

ears (1888-1951), 719 cfs (adjusted for storage in Bartlett and

Extremes.--Maximum discharge during year, 2,080 cfs Sept. 13 (gage height, 5.85 ft); mini- 

 mum daily, 2 cfs Apr. 3.

1888-1939: Maximum discharge not determined (probably over 150,000 cfs, Feb. 24, 

1891); minimum daily, 29 cfs July 11, 13, 1901. Floods of Nov. 27, 1905, and Mar. 4, 

1938, reached maximum discharges of 96,000 and 95,000 cfs respectively.

1939-51: Maximum discharge, 45,800 cfs Mar. 15, 1941 (gage height, 17.5 ft, present 

site and datum, from floodmarks); no flow at Bartlett Dam at times in several years 

when Kates in dam were closed.

pre except during periods of spill. Discharge measurements generally

one

eding page), except uuring perioua 01 apiii. uj-sciiarge uieaBureiiicuiys g^uei &±J-y i"°

week. Records of chemical analyses and water temperatures for the water year

1951 are given in Water-Supply Paper 1200.

Revisions (water years).--W 1049: 1893, 1913-14, 1917-18, 1925-27, 1929. Revised figures 

 of discharge 1'ot- the water years 1915-16 are given herewith. They supersede figures

published in Water-Supply Papers 409, 439, and 1049, published as Verde River near

McDowell, Ariz.

Day 

(water year)

1914-15

Mar. 2.....

5.....

6. ....

10. ....

11.... .

12.... .

13. ....

14. ....

16.....

17... ..

IB.....

19.....

20. ....

21. ....

22, ....

23.... .

24.....

25. ....

26. ....

27. ....

28.....

29. ....

30. ....

31. ....

Apr. 1..... 

2. ....

3. ....

4. ....

5. ....

6. ....

7. ....

8. ....

9.. ...

11... ..

12. ....

21. ....

25. ....

26. ....

27.....

28. ....

29. ....

30.....

May 1 .....

2. ....

3. ....

Discharge 

(cfs)

1,610

1,900

2,160

1,590

1,440

1,440

1,340

1,240

2,000

4,000

4,500

5,000

8,500

5,000

4,500

3,500

3,000

2,000

1,450

1,340

900

4,200

5,000

2,500

1,100

1,000

1,000

7,500

Day 

(water year)

1914-15

May 4 .....

5. ....

6. ....

7.. ...

8. ....

9.. ...

10.. ...

11. ....

15... ..

16.. ...

1915-16

Jan . 2 .....

12. ....

19.... .

20. ....

21. ....

22. ....

23.....

24. ....

25. ....

26. ....

27. ....

28. ....

29. .... 

30. ....

31i . . . . Feb. 1.....

2. ....

3. ....

4. ....

5. ....

6. ....

7. ....

8. ....

9. ....

10. ....

11. ....

12. ....

13. ....

14. ....

15. ....

16. ....

17. ....

18. ....

Discharge (cfsr

7,500

5,500

3,500

2,500

1,310

1,030

1,560

1,180

53,400

44,900

8,000

5,000

3,500

3,000

2,500

2,000

2,600

25,000

30,000 

14,000

5,000

3,500

2,800

2,300

2,000

1,700

1,500

1,400

1,500

2, SCO

3,000

3,200

3,500

3,500

3,900

3,800

3,900

4,000

5,000

Day 

(water year)

1915-16

Feb. 19.....

20. ....

21. ....

22. ....

23.. ...

24. ....

25. ....

26. ....

27.. ...

28. ....

29. ....

Mar. 1.....

2. ....

3. ....

4. ....

5. ....

6. ....

7. ....

8. ....

9. ....

10. ....

11. ....

12. ....

13. ....

14. .... 

15. ....

1C. ....

17.. ...

18.'. ...

19. ....

20... ..

21. ....

2C. ... .

27. ....

28. ....

29. ....

30. ....

31. ....

Aug. 21.....

26.... .

Sept. 2.....

6. ....

9. ....

14. ....

25. ....

Discharge 

(cfs)

5,200

5,OOO

4,800

5,000

6,000

4,200

3,500

3,500

4,000

6,000

9,000

5,000

3,000

2,500

2,500

2,700

4,000

7,600

4,500

3,700

4 , 000

9,000

9,000

6,000

5, COO 

4,300

3, COO

3,000

2,800

2,500

2,400

2,400

5,500

5,500

5,000

3,500

3,000

2,500

390

295

425

303

1,050

555

373
464 GILA RIVER BASIN

Revised figures of discharge, of Verde River below Bartlett Dam, Ariz., 1915-16 Continued

Month

Calendar year 1916. ................

Cfs-days

111,320

425,523

109,200

661,596

Maximum

8,500

5,000

7,500

15,675

15,675

53,400

9,000

18,500

20,700

53,400

53,400

Minimum

1,240

552

300

95

95

525

1,400

2,400

250

115

115

Mean

3,591

2,180

2,663

1,202

1,166

8,231

3,766

5,184

508

1,296

1,759

1,808

Runoff In 

acre-feet

220,800

129,700

163,700

870,400

844,000

506,100

216,600

318,700

31,210

77,120

1,277,000

1,312,000

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

158

158

156

156

154

151

149

149

147

145

143

134

107

105

103

111

109

107

107

105

107

109

111

103

9B

98

100

100

100

102

102

3,784

122

7,510

Nov.

102

102

102

102

102

102

103

103

105

105

105

107

109

109

109

109

111

111

111

169

408

379

351

386

420

416

404

412

448

432

-

6,234

208

12,360

Dec.

368

309

309

223

11

26

26

26

27

27

26

27

28

29

29

28

29

147

582

542

292

342

464

456

472

548

396

393

390

382

224

7,180

232

14,240

Jan.

64

51

120

291

240

240

237

252

284

297

288

235

226

232

204

202

186

168

156

161

170

178

191

204

196

255

258

281

281

135

42

6,325

204

12,550

Feb.

199

178

149

122

111

83

83

87

87

87

88

106

199

342

383

373

303

223

232

335

394

243

202

102

202

173

168

218

_

_

-

5,472

195

10,850

Mar.

237

223

95

79

130

236

409

439

451

517

496

625

6l5

584

504

428

362

240

266

266

266

-266

263

263

260

258

255

235

156

122

8

9,554

308

18,950

Apr.

4

3

2

1(7

120

124

124

124

167

211

34

39

114

258

278

278

278

275

275

263

239

158

168

210

300

288

163

170

170

229

-

5,076

169

10,070

May

416

491

560

306

306

260

316

432

543

640

602

391

229

196

140

357

416

428

435

188

218

218

218

218

267

432

471

449

196

166

166

10,671

344

21,170

June

120

116

115

111

109

95

79

79

79

79

79

77

83

97

97

87

80

82

82

82

83

83

85

85

92

97

97

97

109

166

-

2,822

94.1

5,600

July

158

156

154

147

109

106

106

104

104

88

75

79

83

83

83

82

82

83

82

82

80

80

79

79

80

80

80

80

80

77

J2

2,913

94.0

5,780

Aug.

72

74

85

82

85

87

82

79

82

82

85

87

87

87

102

163

163

163

163

163

161

161

158

156

156

156

142

160

121

Cl2

olO

3,466

112

6,870

Sept.

08

07

55

140

298

500

675

842

1,040

1,410

1,750

1,850

2,050

1,930

1,750

1,500

1,490

1,510

1,430

1,400

1,210

981

800

782

912

925

836

746

573

427

-

29,807

994

59,120

Calendar year 1950: Max 1,610 Min 13 Mean 328 Ac-ft 237,500

Water year 1950-51: Max 2,030 Min 2 Mean 256 Ac-ft 185,100

o Backwater from debris; discharge estimated on basis of records of flow released at Bartlett Dam.
GILA RIVER -BASIN 465

Agua Pria River near Mayer, Ariz.

Location. Lat 34°19', long. 112 0 04', in NWij-SE-f sec. 20, T. 11 N., R. 3 E., on left bank 

at sycamore dam site, 700 ft downstream from Bigbug Creek,and 12 miles southeast of 

Mayer.

Drainage area.--588 sq mi.

Records available. January 1940 to September 1951.

Gage. Water-stage recorder. Altitude of gage is 3,434 ft (levels by Maricopa County Municipal Water Conservation District No. 1).

Average discharge.-- 11 years, 15.8 cfs.

Extremes. Maximum discharge during year, 8,180 cfs Aug. 28 (gage height, 9.70 ft), from 

rating curve extended above 1,600 cfs on basis of slope-area determination at gage 

height 9.3 ft; no flow except for negligible seepage on many days.

1940-51: Maximum discharge, 13,000 cfs Mar. 1, 1941 (gage height, 11.97 ft), from 

rating curve extended above 1,600 cfs on basis of slope-area determination of peak 

flow; negligible flow at times during summer months in most years when entire flow was 

diverted to Perry Canal above station, seepage flow only past gage.

Remarks. Records fair except those for periods of fragmentary or no gage-height record, 

wnicn are poor. Diversions above station for mining and irrigation of about 600 acres. 

Figures of daily discharge do not include water diverted just above station to Perry 

Canal.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

lean

Ac-ft

(t)

Oct.

0.4 1"4~

.3

.3

.3

.2

.1

TT

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1 *.l

.1

.1

.1

.1

.1

.1

.1

.1

4.4

0.14

8.7

13

Nov.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

*.l

.1

.1

.1

.1

.1

.1

.1

.1

-

3.0

0.10

6.0

31

Dec.

o 0.1

ff

0

0

0

0

0

*.'..

2.4

0.08

4.8

50

Jan.

0.1 ~.T

.1

.1

.1

.1

o'

(J

0

0

.1.1

.1

.1

.1 *.l

0

0

0

0

0

.1

.1

.1

.1

.1.1.1.1

.1

2.2

0.07

4.4

78

Feb.

0.1 TT~

15

0

O

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

0

0

0

.1

.1

.1.1

.1

_

_

-

0.6

0.02

1.2

92

Mar.

0.1

0

(J

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

0.01

0.4

119

Apr.

(*)

-

0

0

0

101

May

0

(J

0

0

0

0

0

0

0

0

0

0

0

0

0

0

*0

0

0

0

0

.1

TT

.1

.1

.1

.1

.1

.1

.1

.1

1.0

0.03

2.0

56

June

0.1 -n:

.1.1.1

.1.1.1.1.1

.1.1.1.1.1

.1.1

0

(J

0

0

*0

0

0

0

0

0

0

0

0

-

1.7

0.06

3.4

30

July

0

(J

0

0

0

0

0

0

0

0

0

0

0

0

0

0

20

6

f3.2

f.4

f.4

f.4

*f .4

.6

.6

.7

.7

.6

.7

.7

206

241.4

7.79

479

11

Aug.

136

fie

*f32

f2.8

a. 6

a. 5

a. 4

a. 4

a. 4

*.4

.4

.3

73

.3

39

f7

f.4

f!6

*618

*52

1.9

fl.l

f .6

.5

.5

105

f5

*2,080

4,080

324

a30

7,553.8

244

14,980

0

Sept.

a2O

alO

a5

a3

a2

a2

589

aS0

a5

a4

a3

*a2

2.0

2.2

2.4

1.3

1.0

.9

.9

.8

.8

.8

.8

.8

.7

.7

.7

.6

.6

.5

-

683.5

22/8

1,360

0

Adjusted for diversion to Perry Canal

Mean

Cfsm

In.

Ac-ft

0.36

-

-

22

0.62

-

-

37

0.90

-

_

55

1.34

_

_

82

1.68

-

_

93

1.95

_

_

119

1.70

_

_

101

0.94

-

_

58

0.56

-

_

33

7.96

-

-

490

244

-

_

14,980

22.8

-

-

1,360

Calendar year 1950: Max 239 

Water year 1950-51: Max 4,080

Min 

Min

Mean 

Mean

3.76

23.3

Ac-ft 2,720 

Ac-ft 16,850

Adjusted

Calendar year 195O: Mean 4.62 

Water year 1950-51; Mean 24.1

Cfsm - 

Cfsm -

Ac-ft 3-,350 

Ac-ft 17,430

Peak discharge (base, 1,50O cfs). July 31 (5 p.m.) 3,040 cfs (6.86 ft); Aug. 19 (4:30 p.m.) 6,230 

cfs (9.23 ft); Aug. 28 (10 a.m.) 8,180 cfs (9.70 ft); Aug. 29 (8:30 a.m.) 8,010 cfs (9.65 ft); Sept. 

7 (4:30 a.m.) 4,380 cfs (7.16 ft).

* Discharge measurement or observation of no flow made on this day.

t Diversion to Perry Canal in acre-feet.

a No gage-height record; discharge estimated on basis of weather records.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
466 GILA RIVER BASIN

Agua Fria River at Lake Pleasant Dam, Ariz.

Location. Lat 33°51', long. 112°16', in NW£ sec. 21, T. 6 H., R. IE., at left upstream 

end of Lake Pleasant Dam, 22 miles northwest of Glendale, 24^ miles upstream from 

mouth of New River.

Drainage area.--1,460 sq mi, approximately.

Kecoras available. November 1910 to September 1914 (gage heights and discharge measurements only), October 1914 to September 1919, October 1919 to September 1924 (gage 

heights only and some discharge measurements), and October 1933 to September 1951 

(monthly discharge).

Gage.--Staff gage on Lake Pleasant read to hundredths twice daily. Datum of gage is 

T.431.2 ft above mean sea level, datum of 1929. Prior to Sept. 30, 1924 staff gage 

or water-stage recorder at several sites in the vicinity of diversion dam 1-5- miles 

downstream from Lake Pleasant Dam, at different datum.

Average discharge.--23 years (1914-19, 1933-51), 110 cfs.

Extremes. iaiu^74, 1933-51: Maximum discharge, about 105,000 cfs Nov. 27, 1919 (gage 

neignt, 33 ft, datum then in use, from floodmarksj, from rating curve extended above 

13,000 cfs on basis of velocity-area studies; no flow during springs and summers of 

several years.

A discharge of about 105,000 cfs (gage height, 30 ft, same datum as in 1919, from 

floodmarks) occurred Jan. 28, 1916 (revised). On basis of comparative gage heights, 

the flood of Nov. 27, 1919, is believed to have been the greater.

Remarks. Records poor. Figures given herein represent flow into Lake Pleasant. Discnarge computed on basis of three factors as follows: 1. Change in contents of 

Lake Pleasant and in contents of small reservoir behind diversion dam l£ miles downstream from Lake Pleasant. 2. (a) Release from Lake Pleasant as measured by waterstage recorder and sharp-crested rectangular weir in canal 650 ft downstream from 

intake at diversion dam, rated by current-meter measurements and frequently checked 

by a Clausen-Pierce weir rule; and (b) spill from Lake Pleasant as measured over 

diversion dam (none since May 13, 1941). 3. Effect of rainfall and evaporation on 

lake; evaporation assumed as 0.85 of that measured once daily in 3-foot-square land 

pan buried 1 ? ft in ground near left end of Lake Pleasant Dam. Effect of bank 

storage and bank release in Lake Pleasant is not taken into account. Diversions for 

irrigation above Lake Pleasant of probably not over 1,000 acres. Records of chemical 

analyses and water temperatures for the water year 1951 are given in Water-Supply 

Paper 1200.

Cooperation. Records collected and prepared in cooperation with Maricopa County Municipai water Conservation District No. 1.

Revisions. Revised figures of discharge, in cubic feet per second, for the water years 

1915-16, 1918-19 are given herewith. They supersede figures published in WaterSupply Papers 409, 439, 479, 509, and 1049, published as Agua Pria River near Glendale, Ariz.

Day 

(water year)

1914-15

Jan. 28.....

29.....

30.....

31.....

2. ....

3.. ...

4. ....

5... . .

8... . .

9.....

10.....

11... ..

12.....

13.....

14... ..

Discharge 

(cfs)

11

20,000

15,000

1,750

37

34

32

31

29

70

50

37

32

27

23

20

Day 

(water year)

1914-15

Aug. 15.....

16.....

17.... .

18 .....

19.....

20.....

21.....

22.. ...

23.....

24. ....

25.....

26. ....

1915-16

Jan. 16.....

17. ....

Discharge 

(cfs)

18

16

15

13

12

11

10

10

10

9

9

9

3,000

16,500

Month

January 1915. .........................

Water year 1914-15. .................

Calendar year 1915. .................

Calendar year 1916 ..................

Water year 1917-18. .................

Calendar year 1918 ..................

July 1919. ........................ ...

Water year 1918-19. .................

Day. 

(water year)

1915-16

Jan. 18.....

19.... .

20.....

26.....

27.....

28 .....

29.....

30. ....

1917-18

Mar. 8.....

9.. ...

13.....

Aug. 6.....

7. ....

8.....

Cfs-days

87,279

242 545

241,036

8,514

26,092.8

13,452.0

45,668.4

Discharge 

(cfs)

50,000

21,000

3,100

1,000

5,000

50,000

15,000

3,200

1,800

1,300

1,580

3,170

526

1,430

Maximum

20,000

-

1,800

4,270

3,430

8,430

Day 

(water year)

1917-18

Aug. 10.....

1918-19

July 12.....

14.....

15.....

17.....

18.....

19.....

Sept. 8.....

9. ....

27. ....

28 .....

Minimum

2

3

32

2

2.5

.6

Mean

239

659

275 

359

71.5

434

125

Discharge 

(cfs)

4,270

1,990

1,020

1,230

3,430

879

1,020

8,430

454

4,010

633

acre-feet

173,100

478,200

16,890

51,760

26,680

90,570
GILA RIVER BASIN 467

Monthly discharge of Agua Frla River at Lake Pleasant Dam, Arlz.. 

water year October 1950 to September 1951

Month

Calendar year 1950. .........

September .....................

Mean (cubic 

feet per second)

.8

7.8

9.4

Runoff In 

acre-feet

47

5,670

562
468 GILA RIVER BASIN

Lake Pleasant at Lake Pleasant Dam, Ariz.

Location.--Lat 33°51', long. 112°16' , in NWi sec. 21, T. 6 N., R. 1 E., at left upstream 

end of Lake Pleasant Dam on Agua Fria River.

Drainage area.--1,460 sq mi, approximately.

Records available. February 1928 to September 1951. (Yearly data only prior to 1939.)

Gage. Staff gage. Datum of gage is 1,431.2 ft above mean sea level, datum of 1929.

Extremes.--Maximum contents during year, 102,900 acre-ft Sept. 8 (gage height, 150.25 ft); 

minimum, 207 acre-ft Dec. 16 to Jan. 1.

1928-51: Maximum contents, 178,500 acre-ft Apr. 19, 1941 (gage height, 170.13 ft), 

of which 500 acre-ft was uncontrolled storage; no storage Sept. 5, 1933, July 19 to Aug. 

13, 1940.

Remarks. Lake is formed by multiple-arch dam; dam completed and storage began in 1927.

 Capacity, 163,800 acre-ft between gage heights 59 ft (25 ft above center line of outlet 

works) and 170.0 ft (top of spillway gates). There is no storage belon' gage height 59 

ft because of accumulated sediment. Water released from reservoir flows down river 

channel l£ miles to diversion dam where it is diverted for irrigation near Beardsly. 

Figures given herein represent usable contents in Lake Pleasant. Contents of small reservoir formed by diversion dam is not included.

Cooperation.--Gage height record furnished by Maricopa County Municipal Water Conservation 

District No. 1.

Usable contents at 5 p.m., in acre-feet, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

217

217

216

216

216

216

216

216

216

216

216

214

214

214

214

214

214

214

213

213

213

213

213

213

213

213

211

211

211

211

211

Nov.

211

210

210

210

210

210

210

210

210

210

210

210

210

210

210

210

210

210

210

209

209

209

209

209

209

209

209

209

209

209

Dec.

209

209

209

209

209

209

209

209

209

209

209

209

209

209

209

207

207

207

207

207

207

207

207

207

207

207

207

207

207

207

207

Jan.

207

209

209

209

209

209

209

209

209

209

209

211

211

211

211

211

211

211

211

211

211

211

211

211

211

211

211

211

214

670

984

Feb.

988

988

988

992

996

996

996

996

996

996

996

996

996

996

996

996

996

996

996

996

996

996

996

998

998

998

998

1,000

_

-

Mar.

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

1,000

Apr.

1,000

1,000

1,000

1,000

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

May

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,060

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,050

1,040

1,040

1,040

1,040

1,040

1,030

1,030

1,030

1,030

1,020

1,020

1,020

1,020

June

1,020

1,010

1,010

1,010

1,010

1,010

1,000

1,000

998

992

986

980

975

967

961

956

948

942

936

930

924

918

910

902

895

887

880

872

864

856

-

July

849

841

834

826

819

812

804

799

795

793

789

786

782

778

775

771

767

764

887

956

956

954

952

971

982

1,380

1,390

1,480

1,480

1,480

1,480

Aug.

2,180

3,000

8,580

8,990

9,030

9,030

9,030

9,030

9,030

9,020

9,000

8,990

8,970

8,940

8,920

8,890

8,870

8,860

8,870

9,550

9,840

9,760

9,400

8,450

8,990

8,780

8,630

38,500

84,490

100,000

101,900

Sept.

102,200

102,400

102,400

102,400

102,300

102,200

102,300

102,900

102,800

102,800

102,700

102,600

102,500

102,400

102,300

102,200

102,100

102,000

101,900

101,800

101,700

101,600

101,500

101,400

101,300

101,200

101,000

100,900

100,800

100,900

-

Monthly gage height and contents, water year October 1950 to September 1951

Date

Dec. 31. ...................

Water year 1950-51. ......

Gage height 

(feet)t

62.03

_

149 90

-

Contents 

(acre-feet)

207

_

-

Change in contents 

during month 

(acre-feet)

-2

-5,320

+100,700

t Gage height at 5 p.m.
GILA RIVER BASIN 469

Hassayampa River at Box dam site, near Wickenburg, Ariz.

Location.--Lat 34°02'35", long. 112°42'35", in SE£ sec. 7, T. 8 N., R. 4 W., unsurveyed,

 at BOX dam site, 1\ miles upstream from Wickenburg.

Drainage area. 417 sq mi.

Records available.--January to June 1938, May 1946 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 2,236.12 ft above mean sea level, datum

 of 1929. January to June 1938 at site 1 mile downstream at datum 23.76 ft lower. May 

1, 1946, to Nov. 17, 1949, at present site at datum 2.16 ft higher than present datum.

Average discharge. 5 years (1946-51), 12.5 cfs.

Extremes.--Maximum discharge during year, 27,000 cfs Aug. 29 (gage height, 18.3 ft), from

 rating curve extended above 2,000 cfs on basis of slope-area determination of peak flow; 

minimum daily, 0.8 cfs on many days throughout year.

1938, 1946-51: Maximum discharge, that of Aug. 29, 1951; minimum, 0.2 cfs, Oct. 3, 

1948.

Remarks.--Records fair except those for period of no gage-height record, which are poor.

 amall diversions above station for irrigation and mining.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

3.2

2.6

2.4

2.1

2.1

1.8

1.5

1.5

1.3

1.5

1.5

1.5

*1.5

1.0

.JL

.9

1.0

.9

1.3

2.1

2.6

2.9

3.2

2.4

1.8

1.5

1.0

.9

1.0

1.0

1.0

51.8

1.67

103

Nov.

1.0

1.0

.9

.9

.9

1.0

1.3

1.3

1.3

1.5

1.8

1.8

1.8

*1.5

1.5

1.3

1.0

.9

.9

1.0

.9

7S

.8

.8

.8

.9

.9

.9

1.0

33.2

1.11

66

Dec.

.0

.0

.3

.3

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

* .5

.5

.5

.5

.5

.8

.8

.1

.1

.1

.1

.1

.1

49.3

1.59

98

Jan.

.1

.1

.8

.8

.8

.8

.5

.5

.3

.3

.3

.8

.5

.5

.5

.3

.3

.3

.3

.3

.3

* .3

.3

.8

.5

.5

.8

.8

.8

.1

.4

49.7

1.60

99

Feb.

.5

.5

.5

.5

* .5

1.0

.9

,fl

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

.9

.9

.0

.3

.3

.3

* .5

73

.0

_

-

29.5

1.05

59

Mar.

0.9

* - 9

.8

.8

.8

.8

.8

.8

.9

1.0

.0

.0

.0

.3

.0

.3

.3

.3

.5

.3

.3

* .5

.5

.5

.3

.5

.3

.5

.5

.5

.5

36.4

1.17

72

Apr.

1.8

2.1

1.8

2.1

2.1

2.1

4.8

2.9

2.9

3.2

2.6

2.4

2.4

2.4

2.1

2.1

2.1

1.8

-) (*)

, 2

-

67.7

2.26

134

May

, 2

1.5

n.s

1.5

1.8

1.8

2.1

2.4

2.S

2.6

2.6

2.6

2.6

2.4

60.0

1.94

119

June

2.4

2.1

2.1

1.8

1.5

1.5

1.3

1.0

.9

J3

.8

.8

.8

.8

.8

.8

.9

1.0

1.3

1.3

1.3

1.3

1.3

1.3

1.0

*.9

.8

.8

.9

.9

-

35.2

1.17

70

July

0.9

.9

1.0

1.3

1.3

1.3

1.3

1.8

1.8

1.5

1.3

1.3

1.0

1.0

1.0

1.3

1.0

1.3

*35

2.1

1.5

1.2

*1 .1

1.0

i.l

*13

7.2

1.1

' .9

.9 *ii.

69.2

2.88

177

Aug.

61

4.8

*327

6.8

1.1

*.9

1.0

1.0

.9

^8-

.8

.8

.8

.8

.8

.8

.8

.9

6.5

32

6.8

*.9

.9

.9

.9

334

*75

2,030

*8j470

107

64

11,540.7

372

22,890

Sept.

52

32

21

10

5.9

*4.0

4.0

4.0

3.3

3.7

3.3

3.3

3.1

2.9

2.7

2.7

2.5

2.5

2.3

2.1

2.1

1.7

1.2

1.5

1.3

1.2

1.2

1.1

1.2

1.1

-

180.9

6.03

359

Calendar year 1950: Max 1,170 Min 0.8 Mean 3.01 Ac-ft 2,180

Water year 1950-51: Max 8,470 Mln 0.8 Mean 33.5 Ac-ft 24,250

Peak discharge (base. 500 efs).--AuK. 1 (l p.m.) 362 cfs (4.25 ft); Aug. 3 (12 m.) 2,130 cfa (6.05 

ft); Aug. 20 (10 p.m.) 750 cfs (4.80 ft); Aug. 26 (9 p.m.) 4,910 cfs (7.7 ft); Aug. 29 (11:30 a.m.) 

27,000 cfs (18.3 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Apr. 19 to May 19; discharge estimated on basis of adjoining good record and recorded range in stage.

256684 O - 53 - 31
470 GILA RIVER BASIN 

Gila River below Gillespie Dam, Ariz.

Location. Lat 33 0 13'45", long. 112°45'30", in SE^-NE^ sec. 28, T. 2 S., R. 5 W., at left

 end of Gillespie Dam, 8 miles downstream from Hassayampa River. Gila Bend Canal diverts from left bank and Enterprise Canal diverts from right bank at Gillespie Dam. 

Drainage area. 49,600 sq mi, approximately. 

Records available. August 1921 to September 1951 (river below dam only). Records for

 Gila Bend Canal May 1935 to September 1951 (published as Gillespie Canal prior to October 1950); for Enterprise Canal June 1935 to September 1939 (discharge measurements and 

monthly estimates only) and October 1939 to September 1951.

Gages. Gila River: Water-stage recorder since July 28, 1924. Datum of gage is 5.00 ft 

Below average elevation of crest of dam, which is 753.46 ft above mean sea level, datum 

of 1929. Prior to July 23, 1932, datum of gage was at elevation of dam crest. Aug. 4, 

1921, to Nov. 10, 1924, depth of water read on crest at left end of dam. 

Gila Bend Canal: Water-stage recorder 200 ft downstream from head gates. 

Enterprise Canal: Water-stage recorder since Nov. 29, 1939, 600 ft downstream from 

intake.

Extremes. Maximum discharge during year, 16,600 cfs Aug. 28 (height over crest of dam, 

275"ET~ft); no flow most of year.

1921-51: Maximum discharge observed, 70,000 cfs Dec. 28, 1923 (height over crest of 

dam, 6.0 ft), from rating curve extended above 60,000 cfs on basis of computation of 

peak flow over dam; no flow for extended periods each year.

Maximum discharge known, 250,000 cfs (estimated) in February 1891. 

Remarks. River records good. Records include flow over crest and through sluice gates of

 STITespie Dam but do not include flow in Gila Bend and Enterprise Canals which divert 

from river immediately above dam. Other large diversions above station for irrigation. 

Flow of Gila River and tributaries above this station is regulated by San Carlos Reservoir on Gila River (capacity, 1,205,000 acre-ft); by a series of reservoirs on Salt 

River (capacity, 1,755,000 acre-ft); by Bartlett and Horseshoe Reservoirs on Verde 

River (capacity. 322,300 acre-ft); and by Lake Pleasant on Agua Fria River (capacity, 

163,800 acre-ft).

For records of combined flow of Gila River, Gila Bend Canal and Enterprise Canal, 

and for monthly records of Gila Bend Canal and Enterprise Canal, see tables on following page.

Records of chemical analyses and water temperatures for the water year 1951 are 

given in Water-Supply Paper 1200.

Revisions.--Revised figures of discharge, in cubic feet per second, for period in the water 

939, superseding those published in Water-Supply Paper 879, are given herewith:

Day

Sept. 4

Month

Discharge 1! Day

300 || Sept. 5

Calendar year 1939 ..........

Cf s-days

10,993 

18,527 

17,373

Discharge

1,430

Maximum

2,720 

2,720 

2^720

Day

Sept. 6

Discharge

Minimum

0 

0 

0

1,340

Mean

366 

50. S 

47.6

Runoff In 

acre-ft

21,800 

36,740 

34,450

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

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.

a

0

0

0

O

0

O

0

O

0

0

0

0

O

0

o

0

0

0

0

0

0

0

0

0

0

0

0 

0

*71

250

321

10.4

637

Feb.

14.

7

0

0

0

0

o

0

0

0

0

0

0

o

0

0

0

o

0

0

0

0

0

0

0

o

0

0

_

-

21

0.8

42

Mar. Apr. May June July

0

0

0

0

o

o

o

0

0

o

0

o

0

0

0

0

0

o

0

o

0

0

0

o

o

0

0

1,000 

260

255

40

1,555

50.2

3,080

Aug.

0

0

224

*1,920

1,990

943

*610

505

760

223

28

0

0

0

2

81

O

0

0

0

0

12

6

0

0

0

478

10,900 

8,070

9,150

*5,650

41,552

1,340

82,400

Sept.

4.600

2,500

599

355

305

255

140

120

160

80

80

80

65

65

65

50

50

28

20

10

7

5

2

0

CT

O

o

0 

0

0

0

9,641

321

19,100

Calendar year 195O : Max 380 Mln O Mean 3.9 Ac-ft 2,810

Water year 1950-51 : Max 1O,90O Mln 0 Mean 145 Ac-ft 105,300

Peak discharge (base, 1,OOP efs). July 28 (11 a.m.) 2,34O cfs (during period of sluicing); Aug. 4 

(9 p.m.J 2,880 cfs ("5.96 ftjj Aug. 28 (11:30 a.m.) 16,6OO cfs (7.55 ft). 

* Discharge measurement made on this day.
GILA RIVER BASIN 471

Combined discharge, in cubic feet per second, of Gila River below Gillesple Dam, and of Gila Bend 

and Enterprise Canals at Gillespie Dam, Ariz., water year October 1950'to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

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 

28

29

29

28

29

28

27

28

27

27

26

26

26

26

26

26

27

26

26

28

26

27

27

28

28

29

30 

25

28

29

852

27.5

1,690

Nov.

29 

28

. 25

28

28

30

30

31

29

31

32

35

37

37

40

37

35

37

38

38

37

37

36

36

36

38

38

37 

37

38

-

1,029

34.3

2,040

Dec.

38 

38

37

W

40

40

40

42

41

43

45

44

47

43

42

45

47

48

T5

43

46

47

44

43

46

46

43

42 

43

44

47

1,339

43.2

2,660

Jan.

49 

5?

53

53

52

52

52

52

50

50

57

59

61

58

58

54

53

59

55

51

52

63

60

63

55

55

53

50 

52

144

370

2,097

67.6

4,160

Feb.

145 

168

m

133

96

79

78

86

78

85

83

85

72

62

64

61

66

61

58

53

64

66

61

68

65

64

61

60

_

-

2,278

81.4

4,520

Mar.

57 

66

64

55

61

63

67

55

56

60

66

63

54

56

54

53

53

54

55

55

55

54

51

BT

56

57

79

94 

6T

60

62

1,847

59.6

3,670

Apr.

56 

50

50

51

52

51

52

53

54

56

53

58

57

53

50

55

55

52

48

51

52

50

52

50

49

48

46

TT 

47

57

-

1,551

51.7

3,080

May

54 

55

44

43

42

44

42

45

46

47

46

44

42

45

46

47

46

42

35

37

38

36

38

37

37

33

33

35 

35

36

33

1,283

41.4

2,540

June

32 

32

34

32

30

29

29

28

26

26

27

26

26

26

23

22

22

21

20

20

18

18

18

17

19

16

T7

18

19

20

-

711

23.7

1,410

July

21

21

18

15

T5

15

17

18

18

19

19

20

20

20

21

20

18

20

21

39

25

23

23

22

22

23

22

1.060 

' 599

338

131

2,383

76.9

4,730

Aug.

94 

79

320

2,040

2,110

1,060

734

628

887

359

169

133

112

82

85

220

131

95

68

68

81

53

81

83

49

55

586

11,000 

8,120

9,190

5,690

44,462

1,434

88,190

Sept.

4,640 

2,540

630

384

334

284

233

236

202

200

200

203

190

190

191

174

172

148

138

129

123

116

109

103

100

100

99

91 

85

77

-

12,421

414

24,640

Calendar year 1950: Max 489 Mln 19 Mean 54.7 Ao-ft 39,620

Water year 1950-51: Max 11,000 Mln 15 Mean 198 Ao-ft 143,300

Monthly diversion, In cubic feet per second, by Glla Bend and Enterprise Canals 

at Gillesple Dam, Ariz., water year October 1950 to September 1951

Month

December ..............

Calendar year 1950..

July..................

Water year 1950-51 . .

Gila Bend Canal

Maximum

20 

28 

37

112

115 

139 

59 

47 

42 

22 

68 

124 

106

139

Minimum

16 

16 

28

2

37

45 

35 

30 

20 

5 

5 

12 

6

5

Mean

17.8 

23.8 

32.2

39.1

45.6 

66.6 

43.8 

35.3 

27.7 

12.4 

15.6 

73.3 

72.7

38.7

Runoff in 

acre-feet

1,090 

1,420 

1,980

28,300

,2,810 

3,700 

2,690 

2,100 

1,710 

736 

962 

4,500 

4,330

28,030

Enterprise Canal

Maximum

12 

14 

13

25

18 

22 

23 

19 

15 

13 

25 

46 

28

46

Minimum

7.5 

8.4

9.4

7.5

4.7 

11 

14 

8.6 

12 

10 

5.4 

6.3 

11

4.7

Mean

9.60 

10.4 

11.0

11.8

11.6 

14.0 

15.8 

16.4 

13.6 

11.3 

11.2 

19.5 

19.8

13.7

Runoff in 

acre-feet

590 

621 

677

8,510

714 

778 

972 

973 

839 

674 

688 

1,200 

1,180

9,910
472 GILA RIVER BASIN

Gila River near Dome, Ariz.

Location. Lat 32°45'40", long. 114°25'10", in SWij sec. 4, T. 8 S., R. 21 W., on right bank 

44U rt upstream from bridge on State Highway 95, 3 miles west of Dome and 12 miles upstream from mouth.

Drainage area. 58,100 sq mi, approximately [includes 344 sq mi in Aubrey Valley Playa, a 

closed oasin, and excludes all other closed basins).

Records available. January 1903 to September 1951. (January 1907 to April 1929, monthly 

discharge only, published in Water-Supply Papers 918 and 1049).

Gage. Water-stage recorder since May 1929. Datum of gage is 148.18 ft above mean sea 

level, datum of 1929. Prior to October 1903 and 1907-28, no gage; discharge estimated. 

October 1903 to December 1906, staff gages 4 miles upstream at Gila City. Datum of 

principal gage, 157.6 ft above mean sea level.

Extremes. Maximum discharge during year, 1,100 cfs Sept. 7 (gage height, 7.94 ft); no flow 

most of year.

1929-51: Maximum discharge, 20,700 cfs Feb. 15, 1932 (gage height, 16.75 ft); no 

flow during part or all of each year.

Maximum daily discharge, 200,000 cfs (roughly estimated) Jan. 22, 1916.

Remarks. Records good. This is first flow since 1947. Six discharge measurements made 

during period Sept. 6-12 and many observations of no flow during remainder of year. 

Many diversions above station for irrigation. Plow above station regulated by reservoirs at and above Gillespie Dam (see Remarks for that station).

Revisions (water years).--W 918: 1905.

Rating table, water year 1950-51 (gage height, In feet, 

and discharge, In cubic feet per second) 

(Shlftlng-oontrol method used Sept. 5-9)

2.5

2.6

2.7 

2.9 

3.4

0.3

2.1

6.0

19

54

4.0 

5.0 

6.0 

7.0 

8.0

109

248

455

735

1,100

Discharge, In cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7 

8

9

10

11

12

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

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

0

1

593

1.080 

7ST

394

143

38

8

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0-

3,045

102

6,040

Calendar year 1950: Max - Mln - Mean 0 Ao-ft o

Water year 1950-51: Max 1,080 Mln 0 Mean 8.3 Ac-ft 6,040
COLORADO RIVER MAIN STEM 

Colorado River at Yuma, Ariz.

473

Location.-- Lat 32°43'45", long. 114°37'15", in NW^-NE^ sec. 35, T. 16 S. , R. 22 E. San 

Bernardino meridian, on left bank 1,800 ft downstream from highway bridge at Yuma, half 

a mile upstream from Yuma Main Canal wasteway, 4 miles downstream from Gila River, 

7 miles upstream from boundary between California and Mexico, and 19 miles downstream 

from Imperial Dam.

Drainage area. 242,900 sq mi, approximately, including all closed basins entirely within 

tne drainage boundary.

Records available. January 1878 to December 1901 (gage heights only), January 1902 to 

September 1951.

Gage. Water-stage recorder at present site since July 20, 1934. Datum of gage is 102.32 

it above mean sea level, Yuma project datum, or 102.86 ft, datum of 1929, leveling of 

1941. Prior to May 1922, staff gages at several sites 600 to 1,000 ft upstream of 

present site, all believed to be at same datum. May 1922 to October 1933, water-stage 

recorder or automatic transmitter at site 800 ft upstream at same datum. Nov. 11, 1933, 

to July 19, 1934, staff gage at present site and datum.

Extremes. Maximum discharge during year, 16,100 cfs Apr. 5 (gage height, 15.57 ft), occurred during period of sluicing at Laguna Dam; maximum gage height, 16.40 ft Aug. 31, 

Sept. 1; minimum discharge, 156 cfs Nov. 4 (gage height, 9.11 ft).

1902-51: Maximum discharge, 250,000 cfs Jan. 22, 1916 (gage height, 34.0 ft); minimum daily, 18 cfs Aug. 25-27, 1934, caused by diversion of river flow at Laguna Dam; 

minimum gage height, 8.36 ft July 16, 1947.

Remarks. Records excellent. Many diversions from Colorado River and tributaries. Principal diversions below Parker Dam are Colorado River Indian Reservation Canal, Palo 

Verde Canal, All-American Canal, Gila Gravity Main Canal, and North Gila Valley Canal. 

Flow of Colorado River regulated by Hoover, Davis, Parker, Headgate Rock, and to a 

small extent by Imperial and Laguna Dams. No regulation on Gila River below Gillespie 

Dam. Discharge measurements generally made three times a week.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

875 

765

515

372

1,560

370

690

770

1,090

1,620

1,540

1,180

1,040

900 

1,360

1,780

1,300

845

2,760

366

620

900

850

1,000

1,040

890

990

920

1,110

1,160

1,220

32,398

1,045

64,260

Nov.

880 

2,900

365

T57J

1,040

945

770

885

770

1,340

740

1,100

1,490

1,280 

1,120

3,970

 5TC

2,280

2,620

2,760

2,820

2,510

2,360

2,500

2,320

2,540

2,850

2,630

2,530

3,700

-

55,435

1,848

110,000

Dec.

1,560 

2,660

2,670

2,940

3,390

2,960

2,720

2,600

2,860

3,160

3,160

3,190

3,380

4,580 

2,520

3,180

3,500

3,700

3,430

3,460

2,980

2,920

3,180

3,640

4,040

3,840

3,250

4.S70

4,290

3,820

3,180

101,130

3,262

200,600

Jan.

3,490 

3,320

2,960

2,930

3,120

3,400

3,590

3,560

3,320

2,980

4,800

2,560

3,480

4,040 

4,100

3,960

3,700

3,420

3,340

3,460

3,520

3,840

3,630

3,580

4,080

2^,220

2,540

2,790

2,920

3,540

3,510

105,700

3,410

209,700

Feb.

3,540 

3,400

3,480

3,720

3,720

3,160

2,980

4,140

1,860

2,390

2,400

2,790

3,990

4, 520 

'2,720

2,000

1,960

1,280

1,420

1,740

1,940

2,580

800 1,'2TO"

1,420

1,940

2,070

1,940

_

-

71,170

2,542

141,200

Mar.

2,100 

2,110

1,880

2,120

1,990

1,680

1,420

2,800

335 H3B"

1,560

1,680

1,640

1,720 

1,160

1,080

1,390

1,380

1,940

2,520

3,020

3,990

3,120

3,660

4,010

4,380

4,720

5,160

4,860

5,740

6,260

82,260

2,654

163,200

Apr.

5,700 

5,680

5,130

5,300

6,880

6,440

7,400

7,620

6,460

5,460

5,410

4,850

4,940

4,490 

4,480

4,480

3,540

3,040

3,800

1,280

2,060

2,280

1,940

1,780

1,380

1,840

2,240

2,500

2,240

1,760

122,400

4,080

242,800

May

1,680 

1,530

3,120

380

1=50"

780

980

900

1,100

1,040

530

420

395

455 

1,280

1,640

3,620

375

1,710

1,250

1,290

1,300

1,770

1,880

1,600

1,340

1,180

1,450

1,340

1,270

3,190

42,045

1,356

83,400

June

1,040 

1,560

1,520

1,990

2,120

2,120

2,060

2,040

2,290

2,340

2,740

2,720

2,510

3,570 

1,460

2,110

2,200

2,670

3,540

3,650

4,060

4,070

3,980

4,010

4,590

5,420

5,310

6,140

4, 560

4,270

92,660

3,089

183,800

July

3,820 

4,600

5,210

5,250

5,080

4,340

4,120

4,280

4,440

5,280

4,920

5,280

3,640

3,580 

5,580

3,900

4,580

4,290

3,980

4,080

4,140

4,220

4,310

3,910

3,770

3,950

4,120

 4,300

4,950

5,380

5j520

136,620

4,407

271,000

Aug.

5,380 

5,430

5,280

4,990

4,800

4,660

4,440

4,570

5,700

5,460

3,760

4,050

4,480

4,670 

5,220

5,230

4,940

4,800

4,920

4,870

4,970

5,440

6,970

4,640

4,550

4,960

9,260

8,710

10,700

10,300

11,600

177,750

5,734

352,600

Sept.

11,500

7*330

6,840

6,160

6,980

5,460

5,390

4,650

4,360

4,600

4,520

4,000

3,840 

3,320

3,300

2,900

3,000

2,640

3,720

2.200

2,500

2,440

2,510

2,650

2,640

2,380

3,080

3,960

4,900

-

133,030

4,434

263,900

Calendar year 1950; Max 16,500 Min 265 Mean 4,785 Ac-ft 3,464,000

Water year 1950-51: Max 11,600 Mln 335 Mean 3,158 Ae-ft 2,286,000
474 COLORADO RIVER MAIN STEM

Colorado River at international boundary above Morelos Dam, near Andrade, Calif.

Location. Lat 32"43"00", long. 114°43'00", KE^SE^ sec. 21, T. S., R. 24 W. Gila and 

lie e 

Gate,

salt River meridian, on left bank at northerly international boundary, half a mile east 

of Andrade, 1 mile upstream from Morelos Dam, ij- miles downstream from Rockwood 

and 7f miles downstream from gaging station on Colorado River at Yuma.

Drainage area.--243,OOP sq mi, approximately, including all closed basins entirely within 

the drainage boundary.

Records available.--January 1950 to September 1951.

Gage. Water-stage recorder. Datum of gage is mean sea level, datum of 1929, leveling of 

T941. Auxiliary water-stage recorder 1,450 ft upstream at same datum.

Extremes.--Maximum discharge during year, 17,300 cfs Apr. 5; maximum elevation, 109.77 ft 

Sept. 1; minimum discharge, 1,640 cfs May 14; minimum elevation, 103.79 ft Oct. 5.

Remarks. This record when combined with that of Alamo Canal at Andrade (no diversion since 

Nov. 8, 1950) shows water passing northerly international boundary. No diversions to 

the United States below this station. Discharge measurements generally made three 

times a week.

Cooperation. Records furnished by International Boundary and Water Commission, United 

states section.

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14 

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac-ft

Oct.

2,450 

2,150

1,930

1,72O 

2, 870

2.O70

2,130

2,35O

2,630

3,200

3,170

2,89O

2,710

2,530 

2,870

3,220

2,710 

2,260

5.640

2,l4'0

1,970

2,430

2,230

2,250

2,540

2,480

2,650

2,580

2,820

2,650

2,660

78,900

2,545

156,500

Nov.

2,390 

3,940

2,340

2,010 

2,600

2,330

2,140

2,280

2,490

2,590

2,580

2,630

2,770

2,810 

2,650

4,410

2,870 

4,140

4,380

4,080

4,230

4,080

3,960

4,200

4,110

4,310

4,420

4,400

4,520

5,260

-

101,920

3,397

2O2.1 6O

Dec.

5,260 

4,360

4,400

4,430 

4,770

4,65O

4,52O

4,450

4,64O

4,930

4,790

4,700

4,94O

6,290 

4,260

4,940

5,280 

5,520

5,250

5,520

4,860

4,760

5,080

5,500

5,960

5,400

4,950

5,940

5,810

5,830

5,150

154,720

4,991

3O6.880

Jan.

5,150 

5,130

4.93O

4,74O 

4,88O

5.11O

5,270

5,040

4,840

4,540

5,750

4,040

5,110

5,66O 

5,540

5,440

5,32O 

5,O60

5,010

5,20O

5,350

5,330

5,200

5,270

5,660

5.S5O

4,110

4,450

4,360

4,910

5,O5O

155,260

5,008

5O7.95O

Feb.

5,150 

5,1OO

5,180

5,420 

5,28O

4,840

4,620

6.51O

37280

3,750

5,760

4,20O

4,570

5,200 

4,C90

3,780

3,660 

3,36O

2,960

5,280

3,410

4,O8O

2,380

3,250

3,360

3,4OO

3,460

3,36O

_

-

114,470

4,088

227 , 050

Mar.

3,560 

5,560

3,6OO

3,810 

3,51O

2,940

2,760

4,16O

2.160

2,330

3,190

3,130

2,96O

3,O8O 

2,780

2,700

2,850 

2,900

5,230

3,570

4,230

5,230

4,450

5,350

5,690

5,670

5,980

6.42O

6.12O

7.23O

7,510

126,720

4,088

251,350

Apr.

7.5OO 

7,010

6,3OO

6,600 

8.34O

7,770

8,650

8,600

7,580

7,200

6,86O

6,570

6,460

6,26O 

6,220

5,490

4,920 

4,66O

5,440

3,230

3,57O

3,770

3,480

3,500

2.760

5.4OO

4,010

4.55O

4,410

5.14O

-

167,850

5,595

332,930

May

3,030

2,92O

4,350

1,960 

2,450

2,520

2,320

2.O7O

2,140

2,310

1,910

1.81O

1,930

1,770 

2,600

2,910

4,650 

2,510

3,320

2,940

2,670

2,660

2,910

3,190

2,970

2,81O

2,790

2,630

2,470

2,540

3,870

83,910

2,7O7

166,430

June

2,540 

2,850

3,180

3,130 

3,170

3.2OO

3,290

3,310

3,720

3,930

3,730

3,680

3,500

4,640 

2,950

3,570

3,760 

3,860

4,570

4,700

5.11O

5,330

5,500

5,500

5,510

6,310

6,300

6,6OO

5,720

5,79O

-

128,750

4,292

255,370

July

5,670 

5,61O

6, ISO

6,320 

6,120

5,580

5,720

5,920

5,480

6,26O

6,1OO

6,270

4,710

5,250 

5.12O

4,930

5,570 

5,380

4,850

5,100

5,470

5,630

5,270

4,880

4,920

4,990

5,030

5,580

6,38O

6,520

6j_5OO

173,110

5,584

343,360

Aug.

6i5OO 

6,420

6.45O

6,340 

6,270

5,780

5,300

5.52O

6,760

4.47O

4,850

5,340

5,320

5,4OO 

6,190

6,35O

6,06O 

5,980

6,09O

5,720

5,82O

6,280

8,150

5,940

5,80O

6,620

10,110

9,550

12,260

11,70O

1.2,320

211,660

6,828

419,820

Sept.

15,56O 

10,580

8,580

7.65O 

7,000

7,900

6,260

6,270

5,880

5.45O

5,590

5,730

5,100

4,88O 

4,600

4,710

4,210 

4,120

3,930

4,640

3,280

3,720

3,80O

3,610

3,660

3,82O

3,68O

4.18O

5,220

6,160

167,370

5,579

331,970

Calendar year 195O: Max 17,360 Mln l,32O Mean 6,155 Ao-ft 4,456,250

Water year 1950-51: Max 13,36O Mln l,72O Mean 4,561 Ac-ft 3,31O,77O
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 475

Gila Gravity Main Canal at Imperial Dam, Ariz.-Calif.

Location. Lat 32°52'35", long. 114°27'15", in SE^SW^ sec. 30, T. 6 S., R. 21 W. Gila and 

Salt Kiver meridian, on right bank, 3,200 ft downstream from intake at east end of 

Imperial Dam.

Records available.--August 1943 to September 1951.

 T929. Gage.--Water-stage recorder. Datum of gage is 160.00 ft above mean sea level, datum of 

Extremes.--Maximum discharge during year, 469 cfs July 13 (gage height, 16.00 ft); minimum 

daily, 2 cfs Oct. 5.

1943-51: Maximum discharge, 776 cfs Sept. 7, 1945 (gage height, 16.44 ft); no flow 

at canal intake at times in several years when intake gates were closed.

Remarks.--Records good except those below 50 cfs, which are fair. Discharge measurements 

generally made once a week prior to Feb. 1, twice a week thereafter. Gila Gravity Main 

Canal diverts water from Colorado River at left end of Imperial Dam. Water is used for 

irrigation of lands in Arizona. Diversion to this canal began Aug. 17, 1943.

Discharge, in cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

357

T69

9

4

2

70

261

279

283

270

263

284

281

279

286

252

192

172

131

193

164

161

176

222

265

260

207

214

213

205

213

6,307

203

12,510

Nov.

175

80

156

179

261

270 2TO"

163

233

223

237

250

255

266

264

182

214

212

214

218

217

216

216

218

216

215

217

219

225

179

-

6.4OO

213

12,690

Dec.

220

157

153

79

7_7_

274

295

263

179

153

155

153

155

121

134

121

163

263

220

145

123

109

107

109

112

145

160

161

155

131

142

4,934

159

9,790

Jan.

219

253

243

163

95

96

iTO" 95

130

132

105

107

107

109

110

10O

119

193

185

102

96

101

153

157

131

146

121

138

179

180

146

4,322

139

8,570

Feb.

108

106

TST

122

194

241

232

207

239

167

176

268

221

218

212

211

238

253

271 2"2~4

175

136

148

149

149

151

152

153

_

_

-

5,228

187

10,370

Mar.

162

158

156

177

182

187

197

168

262

262

165

177

246

227

237

212

176

213

251

239

73

6

3

24

183

294

220

359

372

342

397

6,327

204

12,550

Apr.

363

3lT

274

196

184

179

T9T

246

260

254

271

303

354

361

347

333

325

352

3O5

241

201

218

254

285

286

255

274

310

298

277

-

8,308

277

16,480

May

333

316

328

297

254

259

261

250

284

295

289

275

274

298

309

263

281

380

279

321

377

329

319

338

344

311

263

277

291

310

328

9,213

297

18,270

June

313

292

253

265

272

281

264

279

271

280

329

366

389

342

278

328

334

343

357

356

319

293

290

311

361

385

378

355

360

335

9,579

319

19,000

July

348

356

331

279

32?

361

344

287

317

322

363

359

411

457

4BT

407

428

372

308

292

334

355

366

390

374

373

374

392

372

304

302

11,051

356

21,920

Aug.

344

315

309

328

302

256

266

293

280

347

377 350"

348

347

344

342

324

308

303

301

317

342

335

348

381

357

339

271

131

79

91

9,375

302

18,600

Sept.

165 179"

242

275

321

316

321

364

310

275

273

269

290

365

377

342

325

333

360

374

363

343

296

272

255

289

310

263

286

272

9,025

301

17 , 90O

Calendar year 1950: Max 388 Min o Mean 2O7 Ac-ft 15O.2OO

Water year 195O-51: Max 457 Min 2 Mean 247 Ac-ft 178, 6OO
476 DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 

All-American Canal near Imperial Dam, Ariz.-Calif.

Location. Lat 32°52'15", long. 114°28i50", in SE^NW^ see. 17, T. 15 S., R. 24 E. San 

Eernardino meridian, on left bank 6,000 ft downstream from intake at west end of 

Imperial Dam and 13j miles upstream from turnout to Yuma Main Canal.

Records available .-October 1939 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 150.00 ft above mean sea level, datum of 

1929 (subject to undetermined changes caused by earthquake of May 18, 1940).

Average discharge.--10 years (1941-51), 6,915 cfs.

Extremes.--Maximum discharge during year, 10,500 cfs Oct. 5 (gage height, 21.28 ft); minimum daily discharge, 3,930 cfs Feb. 14.

1939-51: Maximum discharge, 13,100 cfs Apr. 7, 1949 (gage height, 22.16 ft); no flow 

on some days of several years.

Remarks.--Records excellent. Discharge measurements generally made twice a week. AllAmerican Canal diverts water from Colorado River at Imperial Dam. Water is used for 

power development, for irrigation in Yuma, Coachella, and Imperial Valleys, and until 

Nov. 8, 1950, for release to Alamo Canal through Pilot Knob wasteway, which water was 

available for irrigation in Mexico. First diversion to All-American Canal began February 1939 but prior to October 1940 was used only for priming canal.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3 

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28 

29 

30 

31

Total

Mean

Ac- ft

Oct.

9,160

9,470

9,770 

9.890 

9,600

9,66O

9,610

9,360

8,770

8,260

8,OOO

7,980

8,250

8,320

8,080

8,100

8,220

8,350

7,870

8,760

8,5.10

8,330

8,070

7,840

7',920

7,970

8,290 

8,090 

7,710 

7,640 

7.520

263,370

8,496

522,400

Nov.

7,820

7,510

7,730 

7,510 

7,220

7,06O

7,060

7,060

6,87O

6,720

6,890

6,480

6,290

6,830

6,930

6,440

6,590

6,160

5,910

5,620

5,650

5,860

5,800

5,560

5,790

5,550

5,410 

5,550 

5,740 

5,850

195,220

6,441

585,200

Dec.

5,920

5,77(5

5,610 

5,390 

5,300

5,310

5,540

5,540

5,550

5,280

5,290

5,340

5,160

5,270

5,290

5,350

5,000

4,880

5,210

5,420

5,800

5,760

5,480

5,020

4,650

5,150

5,350 

4,420 

4,47° 

5,200 

5,600

164,300

5,300

525,900

Jan.

5,540

5,410

5,880 

5,760 

5,710

5,570

5,260

5,080

5,520

5,550

5,510

5,640

5,290

5,140

5,100

5,560

5,460

5,550

5,560

5,530

5,570

5,210

5,420

5,450

5,820

5,850

5.950 

5,650 

5,560 

4.990 

5,096

169,120

5,455

555,400

 Feb.

5,180

5,250

5,240 

4,970 

5,040

5,750

6,O6O

6,OOO

6,310

6,51X5

6,470

5,810

4,530

5.95_Q

6,020

6,300

6,640

7,240

7,240

7,290

7,400

7,580

6,770

7,160

, 6,850

6,470

6,680 

6,470

172,940

6,176

545,000

Mar.

6,560

6,620

6,460 

6,550 

6,510

7,160

7,540

7,190

7,500

7,460

6,800

6,780

7,220

7,28O

8,150

8,140

8,150

7,750

7,590

7,890

8,210

8,240

7,810

7,600

7,220

7,240

7,590 

7,540 

7,680 

7,670 

7,640

229,520

7,597

454,800

Apr.

7,710

7,770

8,660 

8,900 

8,260

8,150

7,850

7,550

7,250

8,060

8,250

8,790

8,790

8,80O

8,170

8,140

8,490

8,720

8,620

8,580

8,110

7,800

8,060

8,090

8,250

,920

,590 

,100 

,476 

,450

242,890

8,096

481,800

May

7,750

8,250

8,050 

8,490 

8,590

8,170

7,750

7,880

7,750

8,480

8,660

8.72O

8,250

7,810

7,620

7,760

7,790

8,260

3,530

8,260

7,870

7,910

7,970

8,080

8,000

8,290

8,460 

8,200 

8,760 

8,750 

7,660

252,550

8,146

500,900

June

8,580

8,400

8,550 

7,960 

7,940

7,760

7,980

8,190

7,980

8,180

7,610

7,930

8,230

8,540

8,740

8,590

8,390

8,280

8,460

8,570

8,120

8,090

8,260

8,220

8,540

8,640

9,110 

8,866 

9,080 

8,930

250,050

8,535

496,000

July

8,580

8,160

8,140 

8,210 

8,000

8,860

8,920

8,670

8,570

8,520

8,820

9,000

8,920

9,070

8,926

8,640

8,460

8,660

8,840

8,880

8,850

8,590

8,590

8,570

8,790

8,650

8,550 

8,200 

7,650 

7,470 

8,050

265,960

8,515

525,600

Aug.

8,390

8,710

9.010 

8,790 

8,500

8,070

8,110

8,470

8,690

8,880

8,690

8,300

8,390

8,590

8,550

8,250

8,200

7,990

7,770

7,720

7,980

8,240

8,040

8,440

8,110

7,690

4,550 

4,670 

4,190 

5,640 

5,920

240,700

7,765

477,400

Sept.

,770

,800

,600 

,740 

,600

,790

,06O

,240

,540

,460

,440

,190

,270

,170

,160

,840

,060

,090

,550

,250

,500

,290

,180

,180

,150

,510

,540 

,490 

,440 

,220

210,480

7,016

417,500

Calendar year 1950 : Max 12,400 Min 4,170 Mean 8,633 Ac-ft 6,250,000

Water year 1950-51: Max 9,890 Mln 3,930 Mean 7,268 Ac-ft 5,262,000
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM, ARIZ.-CALIF. 477

Yuma Main Canal at siphon-drop power plant, near Yuma, Ariz.

Location.--Lat 32°46'35", long. 114°38'05", in SE^SE^ sec. 10, T. 16 S., R. 22 E., San

Bernardino meridian, on right bank at downstream end of power plant, 500 ft from turnout in Ail-American Canal to Yuma Main Canal, 4 miles north of Yuma, and 14? miles 

downstream from intake of All-American Canal at Imperial Dam.

Records available. July 1926 to September 1951 (prior to October 1938, monthly discharge 

only, published in Water-Supply Paper 1049).

Gage.--Differential recorder registering head between forebay and tailrace and rated turbines of power plant. Prior to Jan. 12, water-stage recorders or staff gages on forebay and tailrace. Datum of each gage is mean sea level, Yuma project datum, or 0.70 

ft above mean sea level, datum of 1929 (subject to undetermined changes caused by 

earthquake of May 18, 1940).

Average discharge.--25 years, 1,710 cfs.

Extremes.--Maximum daily discharge during year, 2,010 cfs Nov. 26; minimum daily, 10 cfs

£930-51: Maximum daily discharge, 2,040 cfs Nov. 11, 1943; no flow for some days 

in 1937, 1938, 1939, 1945.

Remarks.--Records excellent. Daily discharge determined from flow through turbines, com- 

 puted from relation between discharge, head, and gate openings as logged by power-plant 

operators. Bypass discharge through waste gates is included in record. Rating of 

turbines checked by two or more current-meter measurements a month. Records show quantity of water diverted from All-American Canal to Yuma Main Canal, except that diverted 

from forebay of power plant to Walapai Canal. The water not needed for irrigation on 

Yuma project is returned to Colorado River through Yuma Main Canal wasteway, 3J- miles 

downstream.

The combined diversions by several small canals from the All-American Canal and by 

Walapai Canal from Yuma Main Canal, above the power plant, and the combined diversions 

by several small canals from the Yuma Main Canal between siphon-drop power plant and 

Yuma Main Canal wasteway are shown in the monthly table below.

Cooperation.--Record of turbine gate openings and diversions furnished by Bureau of Reclanation.

Discharge, in cubic feet per second, water year October i960 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30 

31

Ttotal

Mean

Ac-ft

(t)

(*)

Oct.

1,920

1,850

1,840

1,830

1,880

1,910

1,940

1,930

1,860

1,850

1,890 

1,930

1,940 

1,950

1.960

1,850

1,840

1,880

1,900

1,910

1,93C

1,950

1,85C

1,81C

1, 86C

1, 93C

1.96C

1,96C

1,96C 

1,87C 

1,890

58,830

1,898

116,700

5,380

353

Nov.

1,910

1,970

1,980

1,980

1,980

1,890

1,890

1,960

1,980

1.770

2,000 

2,000

1,870 

1,920

1,970

1,990

2,000

2,000

2,000

1,880

1,910

1,970

2,000

2,000

2,OOC

2.010

1,880

1,950

1,970 

1,970

58, 600

1,953

116,200

3,620

60

Dec.

1,980

2.000

2,000

1,880

1,900

1,930

1,980

1,980

1,980

1,980

1.810 

1,850

1,950 

1,950

1,960

1,980

1,980

1,860

1,890

1,910

1,930

1,920

1,910

1,930

1,980

1,860

1,870

1,890

1,920 

1,940 

1,940

59,840

1,930

118,700

3,360

97

Jan.

1,860

1,870

1,900

1,910

1,920

1,930

1,930

1,870

1,900

1,920

1,950 

1,950

1,960 

1,960

1.850

1,860

1,940

1,930

1,950

1_,990

1,990

1,890

1,910

1,970

1,980

1,980

1,990

1,990

1,870 

1,920 

1,940

59,780

1,928

118,600

4,150

87

Feb.

1,980

1,980

1.990

1,990

1,900

1,940

1,960

1,940

1,950

1,960

1,960 

1,460

454 

12

1,630

1,940

1,950

1,960

1,830

1,810

1,850

1,880

1,890

1,900

1,950

1,820

1,810

1,810

-

49,504

1,768

98,190

4,690

113

Mar.

1,860

1,910

1,930

1.950

1,820

1,810

1,820

1,860

1,860

1,900

1,940 

1,800

1.760 

1,830

1,860

1,890

1,930

1,950

1,810

1,800

1,790

1,840

1,890

1,900

1,910

1,810

1,770

1,820

1,840 

1,910 

1,950

57,720

1,862

114,500

7,290

664

Apr.

1,950

1,810

1,850

1,920

1,930

1,980

1,980

1,980

1,880

1,890

1,920 

1,970

1,980 

L.990

1,990

1,870

1,900

1,920

1,910

1,980

1,980

1,980

1,920

1,890

1,880

1,940

1,940

1,960

1,980 

1,830

57,900

1,930

114, 800

5,650

202

May

1,830

1,910

1,930

1,950

1,970

1,980

1,840

1,830

1,850

1,840

1,890 

1,920

1.980 

1,850

1,880

1,890

1,910

1,970

1,980

1,980

1,860

1,820

1,820

1,910

1,950

1,920

1,950

1,790

1.740 

1,750 

1,780

58,470

1,886

116,000

7,710

379

June

1,820

1,860

1,940

1,760

1,760

1,790

1,830

1,870

1,910

1.950

1,790 

1.750

1,740 

1,780

1,870

1,900

1,940

1,900

1,760

1,770

1,770

1,800

1,890

1,940

1,790

1,770

1,820

1,840

1,830 

1,850

54,970

1,832

109,000

8,720

595

July

1.950

1,790

1,780

1,800

1,810

1,840

1,880

1,890

1,780

1,790

1,810 

1,810

1,790 

1,860

1.950

1,810

1,780

1.770

1,800

1,850

1,890

1,900

1,810

1,770

1,780

1,800

1,800

1,850

1,910 

1,820 

1,820

56,650

1,827

112,400

11,080

708

Aug.

1,820

1,810

1,900

1,940

1,940

1,800

1,770

1,800

1,830

1,870

1,930 

1,940

1,820 

1,810

1,810

1,800

1,810

1,880

1,910

1,820

1,850

1,850

1,870

1,920

1,940

1,950

1,820

1,840

1,960 

1.970 

1,960

57,940

1,869

114,900

7,750

466

Sept.

1.970

1,970

1,870

1,910

1,940

1,940

1,950

1,950

1,950

1,830

1.8.10 

1,820

1,850 

1,840

1,910

1,940

1,850

1,820

1,850

1,870

1,920

1,930

1,930

1,810

1,810

1,880

1,890

1,900

1,930 

1,940

56,740

1,891

112, 500

5,310

597

Calendar year 1950 : Max 2,010 Min 10 Mean 1,857 Ac-ft 1,344,000

Water year 1950-51 : Max 2,010 Min 10 Mean 1,882 Ac-ft 1,362,000

t Diversions in aore-ft above power plant. Total for calendar year 1950, 62,060 aere-ftj for water 

year 1950-51, 74,710 acre-ft.

* Diversions in aore-ft between power plant and wasteway. Total for calendar year 1950, 3,120 

acre-ft; for water year 1950-51, 4,120 acre-ft.
478 DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 

Yuma Main Canal wasteway at Yuma, Ariz.

Location. Yuma Main Canal wasteway receives water from Yuma Main Canal at gages, lat 

 32T4'00", long. 114°37'20", In SW^SE^ sec. 26, T. 16 S., R. 22 E., San Bernardino 

meridian, 1,645 ft upstream from intake of Colorado River siphon on Yuma Main Canal, 

half a mile north of Yuma, and 3-jj- miles downstream from siphon-drop power plant on 

Yuma Main Canal. The wasteway discharges Into Colorado River in SW-J- sec. 26, T. 16 

S., R. 22 E., half a mile downstream from station on Colorado River at Yuma.

Records available. April 1913 to September 1951.

Average discharge. 23 years (1928-51), 1,259 cfs.

Extremes.--Maximum daily discharge during year 1,960 cfs Dec. 25; minimum daily, 10 cfs

1930-51: Maximum daily discharge, 2,020 cfs Dec. 24, 25, 1948; no flow several days 

In 1937, 1938, 1939, 1945, and 1950.

Remarks.--Record good. Discharge computed as difference between discharge of Yuma Main 

Canal at siphon-drop power plant and that of same canal below Colorado River siphon, 

with deduction for small Irrigation diversions from canal between those stations. Records do no Include flow of California Drainage Canal which discharges Into the wasteway 

a quarter of a mile above Its mouth.

Discharge, In cubic feet per second, water year October 1950 to September 1951

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.

1,350

1,170

1,170

1,160

1,250

1,300

1,320

1,320

1,220

1,370

1,300

1,310

1,310

1,320

1,390

1

1,190

1,140

1,150

1,170

1,220

1,320

1,380

1,140

IjlOO

1,200

1,340

1,440

1,440

1,500

1,260

1,280

39,530

1,275

78,410

Nov.

1,320

1,450

1,490

1,500

1,510

1.250

1,240

1,350

1,380

1,230

1,540

1,590

1,280

1,370

1,430

1,520

1,800

1.850

1,810

1,270

1,300

1,380

1,460

1,520

1,580

1,660

1,400

1,520

1,540

1,560

-

44,060

1,469

87,590

Dec.

1,670

1,760

1,740

1,470

1,480

1,560

1,650

1,660

1,670

1,680

1.570

1,380

1,500

1,570

1,670

1,720

1,750

1,440

1,500

1,550

1,640

1,670

1,880

1,910

1.960

1,590

1,420

1,440

1,540

1,630

1,670

49,900

1,610

98,980

Jan.

1,480

,510

,640

,560

,600

,600

,620

,390

1,470

1,560

1,670

1,720

,750

,720

,510

,510

,660

,670

,720

,770

.810

,490

,540

,560

,570

,520

,550

,560

.520

,420

1,420

48,850

1,576

96,890

Feb.

1,470

1,560

1.650

1,650

1,390

1,560

1,270

1,200

1,230

1,500

1,400

1,580

454

10

1,250

1,610

1,540

1,540

1,170

1,120

1,120

1,240

1,340

1,420

1,570

1,240

1,200

1,240

_

.

-

55,884

1,282

71,170

Mar.

1,270

1,560

1,410

1,460

1,240

1,240

1,280

1,540

1,570

1,530

1.580

1,250

1,200

1,500

1,540

1,410

1,480

1,510

1,190

1.170

1,250

1,320

1,440

1,490

1,540

1,170

1,180

1,530

1,360

1,450

1,530

41,970

1,354

83,250

Apr.

,550

.200

,260

,380

,470

,570

,570

,560

,290

,500

,560

,500

,600

,580

,610

,260

,510

,550

,520

,470

,550

,610

,330

,320

,310

,440

,750

.850

,790

1,230

-

43,650

1,455

86,580

May

1,200

1,260

,290

,580

,480

,520

,200

,180

,240

,220

,260

,420

.590

,210

,260

,280

,290

,410

,460

,560

,220

,150

,200

,290

,510

,570

,470

,060

990 We

1,060

39,826

1,285

78,990

June

1,180

1,280

1,470

1,060

1,050

1,050

1,120

1,200

1,360

1,450

1,090

984

1,040

1,120

1,270

1,360

1,420

1,180

1,020

1,060

1,110

1,200

1.550

1,540

1,060

1,020

1,060

1,060

1,110

1,500

-

55,974

1,199

71,550

July

1.590

1,010

1,020

1,060

1,070

1,110

1,480

1,460

1,000

995

996

995

978

1,480

1,500

999

952

957

998

1,110

1,560

1,550

972

940 962"

975

979

1,440

1,480

1,090

1,070

35,372

1,141

70,160

Aug.

1,070

1,040

1,170

1,280

1,310

967

915

991

1,050

1,110

1,210

1,280

1,010

982

991

1,060

1,150

1,260

1,520

1,020

1,080

1,070

1,060

1,130

1,260

1,350

1,160

1,320

1,620

1.680

1,670

36,564

1,179

72,520

Sept.

1,700

1.710

1,420

1,440

1,450

1,570

1,340

1,360

1,420

1,150

1,070

1,580

1,190

1,120

1,250

1,570

1,090

1,030

1,050

1,090

1,120

1,250

1,290

985

996

1,160

1,200

1,250

1,510

1,310

-

57,771

1,259

74,920

Calendar year 1950: Max 1,960 Mln 0 Mean 1,354 Ac-ft 980,100

Water year 1950-51: Max 1,960 Mln 10 Mean 1,341 Ac-ft 970,600
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 479

Yuma Main Canal below Colorado River siphon, at Yurna, Ariz.

Location.--Two gages, one at each end of canal siphon passing under Colorado River to determine head. At intake, lat 32°43'50", long. 114 0 37'10", in SW^-SE^ sec. 26, T. 16 S., 

R. 22 E. San Bernardino meridian, at center of intake structure, on California side of 

river, 1,645 ft downstream from center of Yuma Main Canal Wasteway gates, and 3j miles 

downstream from siphon-drop power plant. At outlet, NW-pNE-j sec. 35, T. 16 S., R. 22 E. 

San Bernardino meridian, on right bank, on Arizona side of river. Both gages are a 

quarter of a mile downstream from highway bridge over Colorado River at Yuma.

Records available.--January 1924 to September 1951 (prior to October 1938 monthly discharge 

only, published in Water-Supply Paper 1049).

Gage. Water-stage recorder at each end of siphon. Datum of each gage is 100.03 ft above 

mean sea level, Yuma project datum, or 100.57 ft, datum of 1929. Elevation of sill of 

inlet is 125.5 ft above mean sea level, datum of 1929. Prior to Oct. 29, 1938, staff 

gages at approximately same site, read simultaneously.

Average discharge.--27 years, 477 cfs.

Extremes.--Maximum daily discharge during year, 839 cfs Aug. 7; no flow Feb. 13, 14.

1930-51: Maximum daily discharge, 855 cfs Mar. 2, 4, 1941; no flow during short 

periods in most years.

Remarks.--Records excellent except those for periods of fragmentary gage-height record, 

which are fair, and those below 100 cfs, which are poor. Daily discharge computed from 

relation between discharge and head on siphon, which is the difference between intake 

and outlet gages. Discharge measurements made twice a month during winter and three 

times a month during summer. Records show quantity of water delivered through Colorado 

River siphon for irrigation of 46,130 acres in the Valley division of the Yuma project. 

and 2,310 acres in the unit B auxiliary project, and for supplementary municipal supply 

for city of Yuma. Records of chemical analyses for the water year 1951 are given in 

Water-Supply Paper 1200.

Cooperation.--Record of diversion for supplementary municipal supply for city of Yuma furnisnea t>y Arizona Edison Co.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

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.

574

668

660

653

626

605

610

595

635

473

588

623

626

626

572

660

694

710

751

682

600

566

704

701

662

586

520

517

463

6T0

609

19,126

617

37,940

1.0

Nov.

592

523

481

482

470

650

64lf

611

601

539

465

411

585

550

537

469

204

170

194

610

605

586

544

481

416

353

473

425

428

414

-

14,515

484

28,790

0

Dec.

307

245

258

406

415

375

348

317

308

304

437

469

?55

384

287

261

249

418

390

356

282

237

35

20

25

464

443

446

377

312

267

9,892

319

19,620

0

Jan.

382

352

255

347

320

333

315

477

430

356

282

234

234

241

337

345

282

259

234

216

179

335

370

410

410

452

458

426

549

495

513

10,888

351

21,600

.8

Feb.

506

318

356

356

512

584

693

741

TTf

660

557

77

0

T5

372

333

406

418

651

688

726

637

554

478

382

567

601

557

_

_

-

03,547

484

26,870

.8

Mar.

576

535

509

470

563

560

532

504

472

353

348

53S

539

514

500

462

440

439

617

608

520

505

442

396

368

633

555

489

483

476

422

15,390

496

30,530

0

Apr.

396

'555 609

534

448

403

409

417

584

595

560

460

375

408

382

602

579

577

594

506

434

368

593

572

566

497

182

133

153

592

-

14,150

472

28,070

0

May

626

654

640

561

486

457

635

640

601

616

619

489

377

£25

622

607

620

561

515

425

634

660

608

607

f33

538

481

716

744

748

7W

18,452

595

36,600

52

June

632

578

473

692

706

731

707

669

548

497

686

727

686

645

583

532

516

700

710

697

650

595

335

405

721

737

742

761

fW

f346

-

18,714

624

37,120

127

July

'331

755

749

737

740

719

390

429

764

773

790

797

799

365

416

803

816

801

788

736

525

548

827

813

801

811

809

398

428

719

732

20,912

675

41,48O

186

Aug.

744

773

725

661

631

821

839

795

769

747

713

653

801

809

806

727

650

611

579

789

764

768

811

792

675

603

660

519

341

f294

f292

21,162

683

41,970

143

Sept.

f265

f262

446

462

492

554

598

578

524

692

729

430

629

705

655

557

744

778

780

780

803

704

643

Sgl

809

719

685

668

f619

f629

-

18,760

625

37,210

149

Calendar year 1950: Max 763 Min 0 Mean 498 Ac-ft 360,700

Water year 1950-51: Max 839 Min 0 Mean 536 Ac-ft 387,800

t Diversion, In acre-feet, for Yuma municipal supply; also included in canal record. Dl 

for calendar year 1950, 1,220 acre-ft; for water year 1950-51, 660 acre-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
wash

480 DIVERSIONS AND RETURN PLOWS AT AND BELOW IMPERIAL DAM 

Ail-American Canal above Pilot Knob wasteway, Calif.

Location. Lat 32°45 I 00", long. 114°42'20", in NW^SE^ sec. 24, T. 16 S., R. 21 E. San

 Bernardino meridian, near right bank on downstream side of pier of bridge on U. S. 

Highway 80, 1.1 miles upstream from Pilot Knob wasteway, 5 miles downstream from 

turnout to Yuma Main Canal, 5| miles northwest of Yuma, and 19j miles downstream 

from intake at Imperial Dam.

Records available.--October 1938 to September 1951.

Gage.--Water-stage recorder. Datum of gage is 148.52 ft above mean sea level, datum of

 1929. Auxiliary water-stage recorder, in NEtNW£ sec. 15 T. 16 S., R. 22 E., on was 

overshoot structure 4.4 miles upstream.

Average discharge.--10 years (1941-51), 4,891 cfs.

Extremes.--Maximum daily discharge during year, 7,550 cfs Oct. 4, maximum gage height,

 17712 ft Apr. 19, minimum daily discharge, 2,200 cfs Aug. 29.

1938-51: Maximum daily discharge, 10,600 cfs Aug. 4, 1950; maximum gage height, 

19.91 ft Apr. 1, 1945; no flow for several days since continuous operation began Sept. 

18, 1940.

Remarks.--Records excellent except those for periods of doubtful or no gage-height record,

 which are fair. Discharge measurements generally made once a week. First flow in 

All-American Canal at this point began Feb. 5, 1939.

The water passing this station, except for the flow through Pilot Knob wasteway 

(p. 481 ) is used for irrigation in the Imperial and Coachella Valleys in the Salton 

Sea basin.

Discharge, in cubic feet per second, water year October 1950 to September 1951

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

219

50 

51

Total

Mean

Ac-ft

Oct.

6,910 

7,100

7,420

7,550 

7,440

7,470

7,360

7,140

6,720

6,170

5,890

5,850

6,050

6,120

5,910

5,900

5,990

5,990

5,810

6,550

6,280

6,100

5,910

5,700

5,750

5,720

6,000 

5,870

5,550

5,490 

5.550

195,000

6,290

586, 800

Nov.

5.580 

5, 380

5,540

5,390 

5,080

4,960

4,880

4,870

4,650

4,660

4,770

4,500

4,580

4,730

4,810

4,400

4,450

4,120

5,850

3,680

3,650

5,740

5,730

5,570

5,680

3,420

5.590 

5,480

5,590

5,660

150, 550

4,552

258,900

Dec.

5.730 

3,590

5,450

3,550 

3,220

5,230

5,540

5,270

5,350

3,140

5,180

3,260

5,050

5,140

3,040

5,150

2,960

2,830

5,050

5,120

5,490

5,520

3,360

2,990

2,640

2,920

5,280 

2,620

2,440

2,940 

5,450

98,040

5,163

194, 500

Jan.

5,510 

5,500

5,780

5,740 

5,690

3,550

5,500

5,070

5,260

5,560

5,440

5,610

3,280

5,060

3.020

3,280

5,520

3,420

5,450

3,360

3,260

3,100

3,280

3,290

3,680

3,670

5.820 

3,590

3,350

3,050

3,030

104,689

3,577

207, 600

Feb.

5,080 

5,250

5,210

3,010 

3,060

5,650

3,980

4,080

4,280

4,440

4,500

4,200

5,690

5,580

4,480

4,460

4,610

5,160

5,190

5,220

5,220

5.400

4,720

4,980

4,750

4,490

4,660 

4,440

-

:

119,770

4,278

257, 600

Mar.

4,500 

4,610

4,450

4.340 

4,470

4,990

5,140

5,140

5,550

5,280

4,790

4,790

5,160

5,150

5,810

5,860

5,820

5,550

5,420

5,680

5,960

6.040

5,660

5,510

5,160

5,180

5,490 

5,460

5,500

5,570 

5,540

165,330

5,269

324,000

Apr.

5,520 

5,640

6,260

6,510 

6,150

5,920

5,680

5,500

5,260

5,950

6,080

6,570

6,570

6.640

6,150

5,990

6,110

6,560

6,550

6,510

5,950

5,600

5,910

5,930

6,100

5,810

5,430 

5.130

5,540

5,490

178,110

5,957

555, 300

May

5,660 

5,990

5,900

6,210 

6,510

5,990

5,620

5,770

5,600

6,200

6,580

6,450

6,060

5,690

5,490

5,520

5,670

5,970

6,040

6,060

5,760

5,770

5,810

5,860

5,760

6,040

6,210 

5,990

6,420

6.480 

5,650

184,550

5,946

565,600

June

6,070 

6,150

6,220

5,780 

5,770

5,610

5,800

6,010

5,800

5,900

5.550

5,730

5,960

6,330

6,420

6,530

6,120

5,990

6,210

6,200

5,970

5,840

5,890

5,840

5,990

6,250

6,640 

6,480

6.690

6,620

182,120

6,071

561,200

July

6,550 

5,960

5,980

6,050 

5,850

6,500

6,690

6,440

6,130

6,100

6,650

6.780

6,700

6,680

6,540

6,250

6,050

6,280

6,550

6,690

6,680

6,180

6,530

6,630

6,560

6,540

6,580 

6,110

5,460

5.250 

5,820

194,880

6,286

386,500

Aug.

6,150 

6,480

6,740

6,550 

6,260

5,840

5,980

6,290

6,420(

6,680

6,450

6,100

6,090

6,240

6,160

6,080

6,120

5,850

5,700

5,650

5,800

6,040

5,920

6,500

5,970

5,650

2,650 

5,060

2.200

2,820 

5,670

175,850

5,608

344, 800

Sept.

5,500 

3,540

5.410

5,480 

4,260

4,650

4,880

5,000

5,080

5,070

5,090

4,880

5,020

4,970

5,050

4,690

4,890

4,910

5,070

4,920

5,220

5,000

4,870

4,910

4,900

5,050

5.520 

5,510

5,510

5,080

145,310

4,777

284,500

Calendar year 1950: Max 10,600 Min 2,440 Mean 6,459 Ac-ft 4,676,000

Water year 1950-51 : Max 7,550 Min 2,200 Mean 5,118 Ac-ft 3,705,000

Note. Doubtful or no gage-height record at auxiliary gage Dec. 14-50, Aug. 8-15; discharge estimated on basis of recorder graph for main gage and records for station near Imperial Dam.
DIVERSIONS AND RETURN FLOWS' AT AND BELOW IMPERIAL DAM 481

Pilot Knob wasteway near Pilot Knob, Calif.

Location. Lat 32°44 I 15", long. 114°42'55", inNV^SWisec. 25, T. 16 S., R. 21 E. San 

Bernardino meridian, 2 miles east of suimnit of Pilot Knob, 6 miles west of Yuma, Ariz., 

and 20.8 miles downstream from intake of All-American Canal at Imperial Dam.

Records available.--February 1939 to September 1951. Prior to 1944, flow, by periods, 

puDiisned in Water-Supply Paper 1009.

Gage.--Tape gages on wasteway gates to show openings read at time of each gate change. 

Water-stage recorder on right bank of All-American Canal, 550 ft upstream from wasteway 

gates, to show head. Datum of gage is at mean sea level, datum of 1929. Elevation of 

sill of wasteway gates is 147.88 ft, datum of 1929.

Extremes.--Maximum daily discharge during year, 1,460 cfs Oct. 3; no flow Nov. 9 to 

 Sept. 30.

1939-51: Maximum daily discharge, 4,650 cfs Aug. 10, 1950; no flow during long 

periods.

Remarks.--Records excellent. Daily discharge computed from head, and openings of wasteway gates, rated by current-meter measurements made In Alamo Canal, and by difference of 

flow measured above and below wasteway in All-American Canal. Record shows water diverted from All-American Canal to Alamo Canal for use in Mexico or for return to Colorado River through Rockwood gate. Pilot Knob Wasteway completed in summer of 1938 and 

first flow occurre'd Feb. 5, 1939.

Cooperation.--Record of gate openings furnished by Bureau of Reclamation.

Discharge, In cubic feet per second, water year October 195O to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

1,430

1,450

1,460 

1,450

1,360

1,230

1,160

1,200

1,130

84O

809

763

761

781

662

637

599

634

664

695

652

649

647

590

458

342

259

259

258

258

256

24,343

785

48,280

Nov.

264

?B7J

204 

204

239

253

253

10

0

O

O

O

0

0

O

0

0

0

0

0

o

0

o

0

0

0

0

0

0

0

-

1,677

55.9

3,330

Dec.

0

0

0

Jan.

0

0

O

Feb.

0

0

O

Mar.

0

0

O

Apr.

0

O

O

May

0

0

0

June

0

0

0

July

0

O

0

Aug.

0

O0

Sept.

0

O

0

Calendar year 1950: Max 4,650 

Water year 195O-51: Max 1,46O

Mean 1,803 Ac-ft l,3O5,OOO 

Mean 71.3 Ao-ft 51,610
482 DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM

North Gila Valley Canal at Laguna Arlz.-Calif.

Location.--Canal diverts from Arizona end of Laguna Dam, lat 32°49'05", long 114°29'H 

in sw£ sec. 14, T. 7 S., R. 22 W. , 5 miles downstream from Imperial Dam, 9 miles upstream from Gila River, and 10 miles northeast of Yuma, Ariz.

Records available. March 1935 to September 1951 (monthly discharge).

Remarks. Water is used for irrigation of about 6,200 acres in the North Gila Valley,

wmcn lies north of the G;ila River in Arizona. Records show quantity of water diverted 

from Colorado River less that wasted back to river by regulation 500 ft below the head 

gate. Records are poor. Discharge estimated by gate tenders in the employ of the 

North Gila Valley Irrigation District, unsupported by discharge measurements or use of 

gages.

Drain No. 1 returns some water from North Gila Valley District to Colorado River in 

NEjNW£ sec. 9, T. 8 S., R. 22 W., 5 miles downstream from Laguna Dam and 14 miles upstream from gage on Colorado River at Yuma. Record of drainage flow estimated by Geological Survey from 53 discharge measurements and recorder graph furnished by Bureau of 

Reclamation.

Two wasteways return excess water at lower end of North Gila Valley District to 

Colorado River in SEi;SW£ sec. 4, T. 8 S. , R. 22 W. , and in SW^SE^ sec. 17, T. 8 S., R. 

22 W., and one wasteway returns water to Gila River channel in NE-fNW£ sec. 22, T. -8 S. , 

R. 22 W. Record computed from daily estimates by watermaster. Approximately a quarter 

of the total wasteway flow was returned to Colorado River and three-quarters to Gila 

River channel. Return flow to Gila River channel that reached Colorado River as surface flow was negligible.

Cooperation.--Records of discharge except for Drain No. 1 furnished by'Bureau of Reclamation.

Monthly diversion, water year October 1950 to September 1951

Month

December ......................

Calendar year 1950. .........

September .....................

Discharge in cubic 

feet per second

Maximum

70 

70 

70

70

70 

70 

70 

70 

70 

70 

70 

70 

70

70

Minimum

0 

0 

0

0

ooooooooo

0

Mean

58.1 

59.0 

63.5

56.9

65.5 

66.3 

64.5 

64.2 

59.7 

60.3 

65.2 

58.7 

64.3

62.4

Runoff 

in 

acre-feet

3,570 

3,510 

3,910

41,180

4,030 

3,680 

3,970 

3,820 

3,670 

3,590 

4,010 

3,610 

3,830

45,200

Return flows in 

acre-feet

Drain 

No. 1

373 

387 

319

4,130

260 

248 

311 

305 

290 

333 

456 

512 

563

4,360

Canal 

wasteways

317 

377 

476

4,350

555 

422 

476 

407 

377 

397 

496 

436 

456

5,190
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 483 

Return surface flows from Yuma project, Ariz.-Calif.

Yuma project lies on both sides of the Colorado River in the vicinity of Yuma. Prior to 

May 1, 1951, Bureau of Reclamation operated all three divisions. On May 1, 1951, Yuma 

County Water Users Association assumed operation of Valley Division in Arizona. Bureau of 

Reclamation continued to operate Reservation Division in California and auxiliary Unit-B 

Division in Arizona.

Water is diverted from the Colorado River at Imperial Dam by the Ail-American Canal 

which supplies the distribution canals for the entire project. See records of Yuma Main 

Canal at siphon-drop power plant and below Colorado River siphon. The California drainage 

canal and Araz drain return surface flows from the Reservation Division and the Cooper, 

Eleven-Mile, and Twenty-one Mile wasteways, Main drain, and East Main Canal return surface 

flows from the Valley Division. None of these return flows are included in the record of 

the Colorado River at Yuma. For record of return flows from the North Gila Valley District 

see record of North Gila Valley Canal at Laguna Dam. Records of monthly discharge prior to 

October 1938 are published in Water-Supply Paper 1049.

California drainage canal.

Location.--water-stage recorder just upstream from crossing of U. S. Highway 80. 

Drainage canal enters Yuma Main Canal wasteway 500 feet above mouth, in SE-qrSW-q; 

sec. 26, T. 16 S., R. 22 E. San Bernardino meridian.

Records available.--Monthly discharge January 1913 to April 1920, October 1921 to 

March lyab, January 1934 to September 1951.

Remarks.--Record shows waste and drainage water from area east of Yuma Main Canal on 

preservation Division. Flow is not included in the record of Yuma Main Canal 

wasteway.

Cooperation.--Record furnished by Bureau of Reclamation.

Araz drain.

 Location.--Enters the Colorado River in NE^NWv sec. 30, T. 16 S., R. 22 E. San

Bernardino meridian, 4 miles downstream from outlet of Yuma Main Canal wasteway.

Records available.--Monthly discharge March 1948 to September 1951.

Remarks.--Record shows waste and drainage water west of Yuma Main Canal on Reserva- 

£Ton Division. There is no gage but due to fairly constant drainage flow record 

is obtained by interpolation between discharge measurements, of which 48 were 

obtained during year.

Cooperation.--Record furnished by Bureau of Reclataation.

Cooper wasteway.

Location. Water-stage recorder and weir, in NW£ sec. 33, T. 8 S., R. 24 W., half a 

mile downstream from Morelos Dam.

Records available.--Monthly discharge January 1934 to September 1951. 

Remarks. Shows waste water from Valley Division returned to Colorado River. 

Cooperation.--Record furnished by International Boundary and Water Commission.

Eleven-mile wasteway.

Location.--Wafer^stage recorder and regulating gate in SW-q- sec. 8, T. 9 S., R. 24 

W., 3-q- miles downstream from Morelos Dam.

Records available.--January 1924 to September 1951.

Remarks.--Discharge computed from gate openings and head, checked occasionally by 

current-meter measurements. Record shows waste water from Valley Division returned to Colorado River.

Cooperation.--Record furnished by Bureau of Reclamation to Apr. 30, by Yuma County 

Water Users Association May 1 to Aug. 31, and by International Boundary and Water 

Commission Sept. 1-30.

Twenty-one mile wasteway.

Location.--Hecordlng gage and flume, in NWi sec. 35, T. 10 S., R. 25 W., 13 miles by 

airline downstream from Morelos Dam.

Records available.--October 1938 to September 1951.

Remarks.--Record shows waste water from Valley Division returned to Colorado River.

Cooperation. Record furnished by Bureau of Reclamation to Apr. 30, by Yuma County 

Water Users Association May 1 to Aug. 31, and by International Boundary and Water 

Commission Sept. 1-30.

Main Drain.

Locatlo'n. Pumping plant in SE^NE-j sec. 11, T. 11 S., R. 25 W., half a mile west of 

ban Luis. Water-stage recorder at outlet and staff gage at inlet.

Records available ..--Monthly discharge January 1919 to September 1951.

Remarks.--Record computed from rated pumps checked by occasional discharge measurements. Flow consists mostly of drainage water from the Valley Division which is 

pumped across the Arizona-Sonora boundary for use in Mexico.
1 DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM

Return surface flows from Yuma project, Ariz.-Calif.--Continued

Cooperation.--Record furnished by Bureau of Reclamation to Apr. 30, since then by 

Yuma County Water Users Association.

East Main Canal.

location.--Water-stage recorder and weir, in NW-fSW^ sec. 12, T. 11 S., R. 25 W., a 

quarter of a mile east of Main drain pumping plant and a quarter of a mile west 

of San Luis.

Records available.--Monthly discharge January 1924 to June 1928, January 1932 to 

September lybi.

Remarks.--Record shows amount of unused water at the extreme end of the Valley

Division which is discharged across the Arizona-Sonora boundary for use in Mexico.

Cooperation.--Records furnished by Bureau of Reclamation to Apr. 30, since then by 

the Yuma County Water Users Association.

Monthly return flows, In October 1950 to September 1951

Month

December ...................

Calendar year 1950.......

July.......................

September. .................

Water year 1950-51. ......

California 

drainage 

canal

4,340

53,890

4,990

59.510

Araz 

Drain

678

7,440

549

940

9.100

Cooper

wasteway

199

3,850

343

462

3.960

Elevenmile

wasteway

3,930

36,150

1,430

26.010

Twentyone mile 

wasteway

492

8,480

192

522

5.170

Main 

Drain

8,290

88,310

7,090

94.550

East 

Main 

Canal

716

10,550

662

13.550
SULPHUR SPRING VALLEY 

WHITEWATER DRAW BASIN

485

Whitewater Draw near Douglas, Arlz.

Location. Lat 31°21'15", long. 109°35'00", in SWijSEij sec. 10, T. 24 S., R. 27 E. , at downstream side of pier on bridge on U. S. Highway 80, l| miles upstream from international 

boundary and 2 miles west of Douglas.

Drainage area.--1,023 sq mi.

Records available.--August to October 1911 (gage heights and discharge measurements only),

 July to October 1912 January 1913 to September 1919, October 1919 to April 1922 (gage 

heights and discharge measurements only), June 1930 to December 1933, May 1935 to September 1951.

Page. Water-stage recorder since June 17, 1930. Datum of gage is 3,907.10 ft above mean

 sea level, datum of 1929 since May 14, 1938. Datum 0.03 ft higher prior to May 14, 1938.

Prior to Apr. 30, 1922, staff gage at various sites within three-quarters of a mile at

various datums.

Average discharge .--24 years (1913-19, 1930-33, 1935-46, 1946-51), 11.6 cfsj. 

Ext rentes. - -Maximum discharge during year, 1,230 cfs Aug. 20 (gage height, 9.06 ft); minimum

dally, 0.1 cfs on many days.

1930-51: Maximum discharge, 3,450 cfs Aug. 10, 1931 (gage height, 12.15 ft); minimum,

0.1 cfs at times during several years.

Maximum discharge known, 4,050 cfs (estimated) July 27, 1919. 

Remarks.--Records fair. Diversions above station for irrigation of 12,500 acres (1947),

mostly by pumping from ground water. Whitewater Draw discharges into Gulf of California

through Yaqui River in Mexico. Record shows flow at international boundary except for

smelter waste water (measured Aug. 18 as 0.67 cfs) which joins stream below station.

Rating tables, water year 1950-51 (gage height, in feet,

and discharge, in cubic feet per second) 

(Shifting-control method used Mar. 26 to Apr. 4)

Oct. 1 to June 30 July 1 to Sept. 30

4.9 0

5.0 .2

5.1 .9

5.2 3.6

5.3 

5.5 

5.7

5.5 

5.7 

6.0

6.5 150

7.0 282

8.0 655

Note. Same as preceding table below 5.5 ft.

Discharge, in cubic feet per second, water year October 1950 to September 1951

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Ac- ft

Oct.

3.1

*.4

.4

.4

2JL

.9

.3

.2

72

.3

.2

.2

.2

.2

.3

.3

.3

.3

.3

.3

.4

.4

.4

.5

.5

.5

.5

*.6

.4

.4

.3

34.7

1.12

69

Nov.

0.3 

.4

.3

.3

.3

.3

.3

.4

.4

.3

.4

.4

.4

^5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

12.4

0.41

25

Dec.

0.

#^

*'. >

11.9

0.38

E4

Jan.

"76 0.6

.5

.5

.5

.5

.5

.5

.5

.6

.5

.6

.6

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

*.3

.4

.6

14.1

0.46

28

Feb.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.5

.5

.5

*.4

.4

_

_

-

12.5

0.45

25

Mar.

0.3

.3

.4

.3

.3

.3

.3

.3

.4

.5

.4

.3

.3

.3

.3

.3

.4

.3

.3

.4

.4

.4

.3

.3

J_§

.6

.5

.3

.3

.3

.2

10.9

0.35

22

Apr.

0.3

.3

*.3

.2

72

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.4

.6

~8.4 11

1.7

.5

.3

.2

.2

.2

.2

.3

.3

.4

28.4

0.95

56

May

0.3

.3

*.3

.3

.3

.2

.3

.2

72

.2

.2

.2

.2

.2

.3

.3

.3

.4

.4

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

1.2 

9.3

0.30

18

June

0.2

.2

.2

*.3

75

.2

.2

.2

.2

.3

.3

.3

.2

.2

.2

.2

.2

.2

J.

.1

.1

.1

.1

.1

.1

.1

*.l

.1

.1

5.4

0.18

11

July

8.3

9.5

25

.3

_._!

*1.3

.2

.1

.1

.1

.5

.1

.1

1.6

.1

.1

5.0

*.3

.2

14

.9

.2

7.0

95

*126

~3Z 173

58

89

9.7

4.3

662.1

21.4

1,310

Aug.

4.0

*222

*121

2.8

.6

.3

.2

.2

.2

.2

.2

.2

.2

.2

_._!

.1

.1

*.l

.1

416

82

*6.8

1.4

.6

8.4

294

13

5.7

 1.7

.7

.6

1,183.7

38.2

2,350

Sept.

0.5 -74

.4

.3

.3

.3

.3

.4

.5

.3

.2

.2

.2

.2

.2

.1

.1

.1

.1

*.l

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

6.5

0.22

13

Calendar year 1950: Max 618 Min 0.1 Mean 11.6 Ac-ft 8,430

Water year 1950-51: Max 416 Min 0.1 Mean 5.46 Ac-ft 3,950

Peak discharge (base, 1,000 

* Discharge measurement made

efs).--Aug. 20 (6:30 a.m.) 1,230 cfs (9.06 ft), 

on this day.

256684 O - 53 - 32
486 MISCELLANEOUS DISCHARGE MEASUREMENTS

Measurements of stream flow in the Colorado River basin made at points other than gaging 

stations are given in the following table:

Miscellaneous discharge measurements in Colorado River basin during water year 

October 1950 to September 1951

Williams River basin, Colo.

Date

Oct. 11

June 20 

July 1C 

Aug. 17 

Sept. 9 

Oct. 11

May 15 

June 19 

22 

July 18 

Aug. 17 

Sept. 9

a Same 

b Same

Stream

South Fork Williams 

River.

Simpson Creek. .......

... .do. .............

Tributary to or 

diverting from--

Williams River. . . .

Keyser Creek. .....

.... do ............

Locality

Sec. 17, T. 3 S., R. 77 W. , at mouth, 

near Leal. a

Sec. 33, T. 1 S., R. 77 W. , at mouth, 

near Leal.

.... do ................................

Discharge 

(cfs)

9.6

284 

96.2 

30.6 

13.5 

.3

6.0 

13.3 

11.1 

1.4 

.8 

.4

location as that described as "Sec. 12. T. 33., R. 77 W. ," in Water-Supply Paper 1179. 

location as that described as "Sec. 25, T. IS., R. 77 W. ," in Water-Supply Paper 1179.

Blue River basin, Colo.

Oct. 4

Oct. 5

Sept. 14

North Forlc Tenmile 

Creelc.

Laslcey Gulch. .......

.. . .do. .............

Tenmile Creelc. ....

Straight Creelc. . . .

. . ..do. ...........

Sec. 34, T. 5 S., R. 78 W. , near 

Frisco.

Sec. 4, T. 5 S., R. 77 W. , at mouth, 

near Dillon.

.... do ................................

3.3 

4.5

3.1

1.1 

1.9

2.6

7.7

10.1

14.1

19.4

I.e.

2.2

Eagle River basin, Colo.

Sept. 30 

30

Homestake Creek. .... 

... .do. .............

Eagle River. ...... swtswi

near

SW^-NEj

near

sec. 13, T. 

Redcliff. 

sec. 30, T.

Redcliff.

7 S. , R. 

6 S. , R.

81 W. , 

80 W.,

15.2

16.8

Gunnison River basin, Colo.

Sept. 4

4

Lake Forlc. ..........

Henson Creelc. .......

Gunnison River. . . .

Lalce Fork. ........

NWj sec. 34,

ft above m

Lake City.

NWj sec. 34,

mile above

T.

outh

T.

mou

44

o

44

th

N. ,

f He

N. ,

, at

R. 4

is on

R. 4

Lake

W. ,

:reek

W. ,

City

100

, at

1/8

26.2

30.4

Indian Creelc basin, Utah

Oct. 10

Dec. 18

27

Five Creek. .........

.. . .do. .............

. .. .do. .............

Indian Creek. .....

.... do ............

SWj sec. 4. T.

surveyed), 1

Indian Creek

10 miles west

.... do .........

34 S. , R. 22 E

mile northwest

Guard Station <

of Monticello

(unof

and

*0.1

* 1

* 1

1.27

.03

Field estimate.

Green River basin, Utah

Nov. 2

May 29 

June 11 

July 24 

Aug. 22 

Sept. 25 

Nov. 2

May 29 

June 11 

July 24 

27 

Aug. 22 

Sept. 25 

May 10

* Flel

North diversion of 

Hades Creelc.

South diversion of 

Hades Creelc.

South Forlc. ......... 

d estimate.

Hades Creelc. ......

... .do. ...........

Rock: Creek. .......

Sec. 26, T. 2 N. , R. 9.W. , Uinta 

special meridian, about £ mile above 

station Hades Creek near Hanna.

Sec. 26, T. 2 N., R. 9 W. , Ulnta 

special meridian, about 1/8 mile 

above station Hades Creek near 

Hanna .

SW£ sec. 21, T. 2 N., R. 7 W. , Uinta 

special meridian.

0.42

1.62 

* . 2 

*2.2 

*.9 

»1.9 

.32

.66 

2.60 

2.00 

2.03 

1.24 

.36 

17.1
MISCELLANEOUS DISCHARGE MEASUREMENTS 487

Miscellaneous discharge measurements In Colorado River basin during water year 

October 1950 to September 1951--Continued

Green River basin, Utah--Continued

Date

June 28

Oct. 5

28

Stream

Unnamed stream. .....

canal.

Paradise ditch. .....

... .do... ...........

Tributary to or 

diverting from--

Rock Creek. .......

Perron Creek.". ....

... .do. ...........

Locality

SEi sec. 22, T. 2 H. , R. 7 W. , Ulnta 

special meridian, about 100 ft above 

station Rock Creek near Hanna.

above confluence of Uinta power canal 

and Pole Creek power canal.

SEi sec. 4, T. 20 S., R. 8 E. , Salt 

Lake meridian, about 6 miles east of 

Perron.

. ...do... .............................

Discharge 

(cfs)

1.60

7.09

6.01

21.4

10.4

8.74

.78 

1.90

5.21

4.96

5.42

Little Colorado River basin, Arlz.

June 19 

19

18 

20

20

Oct. 21

21

Little Colorado 

River.

Concho Creek. .......

River.

. .. .do. .............

. . ..do.. ............

Colorado River. . . .

Little Colorado 

River.

....do. ...........

At bridge on Arizona State Highway 73, 

3 miles southwest of Sprlngervllle.

Coyote Creek, about 2 miles above 

station Little Colorado River above 

Lyman Reservoir, near St. Johns. 

Sec. 18, T. 12 H. , R. 26 E. , below 

springs at head of Concho Reservoir, 

3 miles southeast of Concho.

At mile 10.0 from mouth. ..............

2. 60

2.88

98.5

162

200

Tapeats Creek basin, Ariz.

June 27 

?7

27

Tapeats Creek. ......

... .do. .............

Colorado River. . . .

.. ..do...... ......

NEi sec 

above 

above

below 

above 

NWi sec 

above

36, T. 

Thunder 

mouth.

Thunder 

mouth. 

1, T. . 

mouth.

35 H. 

Sprin

Sprin 

54 H. ,

, R

gs =

gs £ 

R.

2 W. 

md 2i

2 W

md 2 

2 W. ,

, 500 ft 

miles

miles 

J mile

37.3

59.7

Havasu Creek basin, Ariz.

Oct. 20

Oct. 19

16

Havasu Creek. .......

.... do ..............

Colorado River....

....do.. ..........

Below spring inflow, 1-J miles south of 

Supai and 9j miles above mouth.

NW£ sec. 10, T. 33 H. , R. 4 W. , above 

Hualpal (Mooney) Palls, 2 miles 

northwest of Supai, and 5? miles 

above mouth.

west of Supai.

63.8

59.1

Virgin River basin

July 1 Beaver Dam Wash.....

Camp Wash Palls 

Springs.

Slim Creek 

Springs.

Petrified Springs

Llttlefield Springs.

Llttlefleld Canal... 

Bunkerville Canal...

Virgin River...... SW£ sec. 4, T. 40 N., R. 15 W., at 

mouth. Enters river or Llttlefield 

Canal on right side -J mile above 

station Virgin River at Llttlefield, 

Ariz.

Si sec. 4, T. 40 H., R. 15 W., at 

mouth. Enters river on left bank 

about i mile above station Virgin 

River at Littlefield, Ariz.

Si sec. 4, T. 40 H., R. 15 W., at 

mouth. Enters river on left bank 

Just below mouth of Beaver Dam 

Wash, about ^ mile above station 

Virgin River at Littlefield, Ariz.

Si sec. 4, T. 40 H., R. 15 W., at

canal on left side 800 ft above 

station Virgin River at Littlefield, Ariz.

SWi sec. 4, T. 40 H., R. 15 W., at 

mouth. Enters river on right side 

about 500 ft above station Virgin 

River at Littlefield, Aria.

SWi sec. 4, T. 40 N. , R. 15 W., 300 

ft above station virgin River at 

Littlefield, Ariz.

Ei sec. 19, T. 13 S., R. 71 E. , at 

bridge on U. S. Highway 91. 1-J 

miles southwest of Mesquite, Hev.

1.18

23.4
MISCELLANEOUS DISCHARGE MEASUREMENTS

Miscellaneous discharge measurements in Colorado River basin during water year 

October 1950 to September 1951--Continued

Virgin River basin--Continued

Date

July 2

Stream

Virgin River. .......

Tributary to or 

diverting from--

Colorado River. . . .

Locality

Ei sec. 19, T. 13 S., R. 71 E. 

bridge on U. S.' Highway 91, 

southwest of Mesquite, Nev. , 

all diversions for Mesquite 

Bunkerville.

, at 

If miles 

below and'

Discharge 

(cfs)

30.6

Bill Williams River basin, Ariz.

Nov. 23

July 4 

12

Santa Maria River. . .

Bill Williams River. 

.... do ..............

Bill Williams River

Colorado River. . . .

Wj sec. 22, T. 12 N. , R. 9 W. , at 

bridge on State Highway 93, 15 miles 

southwest of Bagdad.

veyedj, just below Bonanza Wash, 

10 miles southwest of Bagdad. 

NEi see. 36, T. 11 N. , R. 17 W. , at 

site of former gaging station, 

1 mile west of Planet. 

SEf sec. 20, T. 11 N. , R. 17 E. , at 

base of prominent red bluff on 

north bank about 1 mile upstream 

from Havasu Lake.

*0.2 

0

7.11 

.48

Field estimate.

Gila River basin, Ariz.t

1951 

June 29

29

27

27 

27 

29 

28

28

28

May 28'

June 1 

Apr. 11

June 29 

1950 

Oct. 18

20 

20

1951 

Mar. 28

27 

28 

June 27

Apr. 10 

10 

3 

3 

3

t Incl 

previous

Gila River. .........

Blue Hiver. ......... 

Eagle Creek. ........ 

.... do ..............

Bonita Creek. .......

East Turkey Creek. . .

Warm Springs. .......

... .do. .............

.... do ..............

San Pedro River. ....

P. Z. ditch. ........

.. ..do. .............

... .do. .............

tides discharge measure 

ly published.

San Francisco 

Hiver.

Gila River. ....... 

... .do.. ..........

San Simon Creek. . .

San Carlos River. .

Colorado River. . . .

.... do ............

Gila River. .......

ments made in the wa

SW^NE-j sec. 5, T.. 7 S. , R. 31 E. , 1.0 

mile above Apache Grove, near York. 

NWi see. 32, T. 6 S. , R. 31 E. , 

i mile below Apache Grove, near York 

Sec. 31, T. IS., R. 31 E. , at road 

crossing 2j miles above Juan Miller 

Creek and 85 miles above mouth. 

Sec. 7, T. IN., R. 28 E. , 7 miles upstream from Eagle ranger station, 

near Morenoi. 

Sec. 31, T. IN., R. 28 E. , 2.6 miles

upstream from Eagle ranger station, 

near Morenci.

mile below intake of Safford water 

supply and 4 miles above mouth. 

SW-J-SEt sec. 34, T. 17 S. , R. 31 E. , 

diverts from left side of Cave 

Creek at Portal ranger station, 

4 miles southeast of Paradise. 

SW^SEi sec. 34, T. 17 S. , R. 31 E. , 

at Portal ranger station, 4 miles 

southeast of Paradise. 

SWj see. 19, T. 17 S., R. 31 E. , at 

Paradise. 

Lat 33°12', long. 110°18', on San 

Carlos Indian Reservation, 5 miles 

downstream from station Gila River 

at Calva and 8 miles upstream from 

San Carlos River.

On San Carlos Indian Reservation, 

£ mile below county road crossing of 

San Carlos River and 15 miles northeast of San Carlos.

Sec. 17, T. 3 S., R. 18 E. , above Warm 

Springs, 0.2 mile below Coolidge Dam. 

NWf sec. 6, T. 4 S., R. 17 E. , below 

gap, 13.0 miles below Coolidge Dam.

Warm Springs, 14.9 miles below 

Coolidge Dam. 

SW£ sec. 15, T. 4 S., R. 16 E. , 0.20 

mile above Dripping Springs Wash, 

near Christmas.

mile above Dripping Springs Wash, 

near Christmas. 

Ei sec. 7, T. 5 S., R. 16 E. , above a

lime hill about lj miles above 

station Gila River near Winkelman. 

NW£ sec. 3, T. 20 S. , R. 21 E. , in 

San Juan de las Boquillas y Nogales 

land grant, just below Babacomari 

River at bridge on State Highway 82, 

at Pairbank. 

NWi sec. 22, T. 7 S., R. 16 E. , if 

miles above moutl^of Aravaipa Creek.

above Aravaipa Creek. 

NW-J sec. 35, T. 6 S. , R. 19 E. , 3jmiles northwest of Klondike.

below Turkey Creek.

ft below Parsons Canyon, 

cer year October 1949 to September 1950,

0

4.49 

3.58

4.08 

0 

.79 

0

0

0 

1.85

0 

7.42

7.24 

0 

0. 

2.60

91.5 

88.8 

97.7 

0

5.40 

4.86 

.84 

10.8

12.4 

not
MISCELLANEOUS DISCHARGE MEASUREMENTS

Miscellaneous discharge measurements In Colorado River basin during water year 

October 1950 to September 1951--Continued

Qlla River basin, Arlz. -(---Continued

Date

1951 

Apr. 3

3

4

4

4

4

4

4

4

4

July 2

Apr. 4

4

12

10

10

12

11

11

11

11

Mar. 29

29

Apr. 11

Mar. 30

30

30

31

31

31

June 19

19

19

Stream

Aravaipa Creek. .....

.. ..do. .............

... .do. .............

Diversion ditch. ....

.... do ........ ......

Aravaipa Creek ......

Diversion ditch. ....

.... do ..............

Aravaipa Creek. .....

Diversion ditch. ....

Aravaipa Creek. .....

.... do ..............

Diversion ditch. ....

Putman Spring. ......

Diversion ditch. ....

Combined flow of

P. Z. ditch and

San Pedro River.

Cooks Lake. .........

Young Spring. .......

Combined flow of

Young Spring ditch

(lower end) and

San Pedro River.

Combined flow of

Paul Adam flitch

and San Pedro

River.

San Pedro River. ....

... .flo. .............

. ...do. .............

... .do. .............

Tailings dump drainage.

Qila River. .........

. . . .do. .............

....do... ...........

.. ..do... ...........

.... do ..............

East Fork Black

River.

. ...do... ...........

West Fork Black

River.

Tributary to or 

diverting from--

San Pedro River. . .

. . . .do. ...........

do

Aravaipa Creek. . . .

.... do ............

San Pedro River. . .

Aravaipa Creek. . . .

.... do. ...........

San Pedro River. . .

Aravaipa Creek. . . .

San Pedro River. . .

... .do. ...........

Aravaipa Creek. . . .

San Pedro River. . .

... .do. ...........

Gila River. .......

San Pedro River. . .

.... do ............

Qila River. .......

... .do. ...........

do

.... do ............

.... do. ...........

do

... .do. ...........

Colorado River. . . .

do

. . ..do... .........

... .do. ...........

... .do. ...........

Black River. ......

... .do. ...........

. . . «ao. ...........

Locality

HW-J sec. 16, T. 6 S. , R. 18 E. , 100

ft below Horse Camp Canyon.

SE-t sec. 13, T. 6 S., R. 17 E., about

J mile above Buzan Canyon.

.... do ................................

SWi sec. Z4, T. 6 S., R. 17 E. , at

Woods Ranch, 0.5 mile below Buzan

Canyon.

SEi sec. Z3, T. 6 E. , R. 17 E. , at

La Jolla Ranch, 0.8 mile below Buzan

Canyon.

NE-J sec. 26, T. 6 S. , R. 17 E. , at

Lewis Ranch, 1.7 mile below Buzan

Canyon.

SEi sec. 27, T. 6 S. , R. 17 E. , 0.8

mile above Oak Spring Canyon.

SWi sec. 34, T. 6 S. , R. 17 E. , at

ranch 0.4 mile below Oak Spring Canyon. 

NEi sec. 4, T. 7 S. , R. 17 E. , 0.1

mile above Aravaipa Farms and 0.3

mile below Holy Joe Canyon.

NEj sec. 4, T. 7 S. , R. 17 E. , 0.1

mile below Aravaipa Farms and 0.4

mile below Holy Joe Canyon.

NEj- sec. 8, T. 7 S. , R. 17 E. , at

site of former gaging station, 2.0

miles below Holy Joe Canyon and

6 miles above mouth. 

NW-J sec. 8, T. 7 S. , P. 17 E. , 0.5

station and 5j miles above mouth.

H¥j sec. 8, T. 7 S. , R. 17 E. , 0.8

mile below former gaging station

and 5.Z miles above mouth of Aravaipa

Creek.

NE£ sec. 18, T. 7 S. , R. 16 E. , at

mouth of Camp Grant Wash, 2j- miles

above mouth of Putman Wash.

SWi sec. 4, T. 7 S. , R. 16 E. , J mile

below Aravaipa Creek.

NEi sec. 5, T. 7 S. , R. 16 E. , about

lj miles below Aravaipa Creek.

SWi sec. 33, T. 6 S. , R. 16 E. , 0.7

mile southwest of P. Z. Ranch and

ij miles below Aravaipa Creek.

SE£ sec. 17, T. 6 S., R. 16 E. , at

base of Malpais 'Hill and 1.1 miles

below Dodson Wash.

SWi sec. 8, T. 6 S., R. 16 E. , £ mile

below ford and 2 miles below Dodson

Wash.

NW£ sec. 8, T. 6 S., R. 16 E. , at

mouth of Eskiminzin Wash.

SWi sec. 31, T. 5 S., R. 16 E. , about

1 mile below Swingle Wash and 3^

miles above mouth.

SE£ sec. 23, T. 5 S., R. 15 E. , 0.1

mile west of ford and ^ mile above

mouth, near Winkelman.

NEi sec. 23, T. 5 S. , R. 15 E. , 100

ft above mouth, near Winkelman.

.. ..do... .............................

N¥£ sec. 16, T. 53., R. 15 E. , at

tailrace below Tailings dump, 2 ndles

west of Hayden.

Sec. 1, T. 4 S., R. 12 E^ (unsurveyed) ,

5-j miles upstream from Cochran.

Sec. 2, T. 4 S. , R. 12 E. (unsurveyed),

4 miles above Cochran.

.. . .do. ...............................

Sec. 6, T. 4 S., R. 12 E. (unsurveyed),

at Cochran, 3 miles above Buttes

Reservoir site.

Sec. 11, T. 4 S., R. 11 E. , about

i mile below Donnelly Wash and if

miles above Big Wash.

SWi sec. 14, T. 6 N. , R. Z8 E. , at

road crossing below Big Lake, 14

miles south of Eagar.

NWi sec. 12, T. 4 N. , R. 28 E. , at

Buffalo Crossing, 1 mile above

confluence with West Fork Black

River and 14 miles southwest of

Alpine.

NWA sec. 11, T. 4 N. , R. 28 E. , at

road crossing, l£ miles above confluence with East Fork Black River

and 15 miles southwest of Alpine.

Discharge 

(cfs)

1Z.5

11.9

13.9

.Z7

.57

13.3

.63

.49

11.7

.91

0

8.74

6.19

.30

1.49

3.91

4.Z8

3.05

Z.6G

5.74

3.63

8.91

8.29

Z.21

5.51

120

132

1Z1

119

111

.24

5.55

3.75

t Includes discharge measurements made In the water year October 1949 to September 1950, not

previously published.
490 MISCELLANEOUS DISCHARGE MEASUREMENTS

Miscellaneous dlscha 

Oc

rge measurements In Colorado Elver basin during water year 

tober 1950 to September 1951--Continued

Olla Elver basin, Ariz. -(---Continued

Date

1950 

Mar. 20

1951

Sept. 20

20 

21

June 12

Mar. 8

25

Feb. 14 

14

June 13 

13

13 

13 

12

12

12

12

22

22 

22

Stream

Black Elver. ........

do

White Elver. ........

... .do........ ......

Salt River Draw. ....

Salt Elver. ......... 

.. ..do. .............

Verde River. ........ 

Sycamore Creek. .....

Oak Creek. .......... 

....do.. ............

Montezuma Well (outflow).

Beaver Creek. ....... 

West Clear Creek. . . .

Verde River. ........

Agua Frla Elver. ....

Black Canyon. ....... 

Agua Fria Elver. ....

Tributary to or 

diverting from--

Salt Elver. .......

do

do

Black River. ......

. ...do.... ........

Gila River. .......

Verde Elver. ...... 

.. ..do. ...........

Wet Beaver Creek. . 

Verde River. ......

.... do ............

Gila River. .......

Agua Fria Elver. . . 

Gila River. .......

Locality

Sec. 32, T. 2 N. , R. 25 E. , below 

pumping plant, 2,500 ft below Freezeout Creek and 8 miles north of Point 

of Pines.

do

do

do

Road, about \ mile below large 

spring, j mile below site of former 

gaging station, 5-J miles above mouth. 

Lat 33°44'30", long. 110°13'30", 25

ft above confluence with White River 

and at mile 93.6 on Salt River profile map.

Apache Road, 5 miles above mouth.

of White and Black Rivers. 

Lat 33°44'30", long. 110°13'30", 150 

ft above confluence with Black 

River.

Trough Creek, 0.6 mile above Carrizo 

Creek and at mile 83.4 on Salt River 

profile map.

Fort Apache Indian Reservation, 100 

ft below road crossing at Cibecue.

ervation near Chrysotile,at mile 

53.1 on Salt River profile map.

ervation near Chrysotile, at mile 

51.2 on Salt River profile map.

Ranch and 2j miles above mouth. 

Sec. 33, T. 3 N., R. 7 E. ., 3/8 mile 

above Coon Bluff and l.i miles above 

Verde River. 

Sec. 4, T. 2 N. , R. 7 E. (unsurveyed) ,

200 ft above Coon Bluff and -J mile 

above Verde River.

right bank of Salt River, 0.6 mile 

above Verde River. 

Sec. 36, T. 18 N. , R. IE., at highway bridge J mile above Perkinsville. 

SW-J sec. 8, T. 17 N. , R. 3 E. , J mile 

above mouth and 6 miles northwest 

of Clarkdale. 

SEiSEj sec. 7, T. 17 N., R. 6 E. , at 

bridge at Sedona. 

SE-fSWi sec. 3, T. 15 N. , R. 4 E. , at 

bridge at Cornville. 

NE-J sec. 31, T. 15 N. , R. 6 E. , at 

Montezuma Well, 85 miles northeast 

of Camp Verde. 

SW-iNW-J- sec. 29, T. 14 N. , R. 5 E. , 

at ford I/a nile above mouth and 

1/8 mile below site of former 

gaging station at Camp Verde. 

SE? sec. 18, T. 13 N. , R. 6 E. , 

above all diversions at mouth of 

canyon, 1 mile above Clear Creek 

ranger station and 5 miles above 

mouth.

at site of former gaging station, 

750 ft upstream from Chasm Creek and 

9 miles southeast of Camp Verde. 

85 sec. 34, T. 9 N. , R. 2 E. , at bridge 

on State Highway 69 at Canon, above" 

mouth of Black Canyon. 

Ei sec. 33, T. 9 N. , R. 2 E. , i mile 

above mouth, near Canon. 

Sec. 4, T. 8 N. , R. 2 E. , below mouth 

of Black Canyon, about 1 mile below 

bridge on State Highway 69 at Canon.

Discharge 

(cfs)

127

15.4

32.7

62.4

22.8

5.11

1.47

9.03

28.6

10.1

1.96

52.2 

2.64

4.11

9.01

6.32

*1.5

.78

14.2 

15.8

20.3 

10.1

24.0 

37.6 

'2.79

6.22 

6.46

0

0 

.22

* Field estimate.

t Includes discharge measurements made in water year October 1949 to September 1950, not previously 

published.
INDEX

Accuracy of field data and computed

results......................... 7-8

Acre-foot, definition of.............. 2

Agencies other than Geological Survey,

records collected by............ 11

Agua Fria River at Lake Pleasant Dam,

Ariz...........................466,467

discharge measurements of........... 490

near Mayer, Ariz.................... 465

Alamo, Ariz., Bill Williams River near 380 

Santa Maria River near.............. 379

All-American Canal above Pilot Knob

wasteway, Calif................. 480

near Imperial Dam, Ariz.-Calif...... 476

Almont, Colo., East River at.......... 97

Taylor River &t..................... 93

Altonah, Utah, Yellowstone Creek near.248,249 

Alva B. Adams tunnel at East Portal,

near Estes Park, Colo........... 16

diversion by.......................340,342

Andrade, Calif., Colorado River near.. 474 

Animas River above Tacoma, Colo....... 319

at Durango, Colo.................... 321

at Farmington, N. Mex............... 324

at Howardsville, Colo............... 318

near Cedar Hill, N. Mex............. 323

Arapaho Creek at Monarch Lake Outlet,

Colo............................ 21

Aravaipa Creek, Ariz., discharge measurements of....................488-489

Araz drain, Ariz., return surface

flows from, to Colorado River... 483 

Ashley Creek at Sign of the Maine,

near Vernal, Utah............... 226

below Trout Creek, near Vernal, Utah 218 

near Jensen, Utah................... 227

near Vernal, Utah................... 221

South Fork, near Vernal, Utah....... 219

Aspen, Colo., Hunter Creek near....... 71

Roaring Fork at..................... 70

Sardine, Colo., East Muddy Creek near. 115 

Muddy Creek at...................... 116

Bartlett Dam, Ariz., Verde River

below..........................463-464

Battle Creek near Slater, Colo........ 207

Bayfield, Colo., Los Pinos River near. 312 

Vallecito Reservoir near............ 311

Beaver Creek (tributary to Green River

in Wyoming) near Daniel, Wyo.... 161

Beaver Creek, East Fork (tributary to 

Henrys Fork), near Lonetree, 

Wyo............................. 191

Middle Fork, near Lonetree, Wyo..... 190

West Fork, near Lonetree, Wyo....... 192

Beaver Creek (tributary to San Miguel

River) near Norwood, Colo....... 141

Beaver Creek (tributary to Verde

River) at Camp Verde, Ariz...... 459

discharge measurement of............ 490

Beaver Dam Wash, Ariz., discharge

measurement of.................. 487

Bedrock, Colo., West Paradox Creek

near..'.......................... 138

Berthoud Pass ditch, of Colo., diversion by........................340,342

Bicknell, Utah, Fremont River near.... 290

Big Creek at upper station, near

Collbran, Colo.................. 86

East Fork, near Colbran, Colo....... 85

Big Piney, Wyo., Middle Piney Creek

near............................ 173

Big Sandy, Wyo., Big Sandy Creek' near. 177 

East Fork near....................... 170

Silver Creek near................... 171

Big Sandy Creek at Leckie Ranch, near

Big Sandy, Wyo.................. 177

Page 

Bill Williams River at Planet, Ariz.... 381

discharge measurements of............ 488

near Alamo, Ariz..................... 380

Bill Williams River basin, Ariz., discharge measurements in........... 488

gaging-station records in...........379-381

Birch Creek near Escalante, Utah....... 293

Black Canyon Creek, Ariz., discharge

measurement of................... 490

Black Canyon ditch, Utah, diversion by 341,342 

Black Creek above Green Mountain

Reservoir, Colo.................. 50

Black Gore Creek near Minturn, Colo.... 63

Black River, Ariz., discharge measurements of 490 

East Fork, discharge measurements of. 489 

near Fort Apache, Ariz............... 441

West Fork, discharge measurement of.. 489 

Willow Creek diversion from, near

Morenci, Ariz.................... 408

Black & McClesky Canal, Ariz., diversion by.......................... 402

Blacks Fork near Green River, Wyo...... 187

near Lyman, Wyo...................... 185

near Millburne, Wyo.................. 180

near Urie, Wyo....................... 181

Blanco, N. Mex., San Juan River near... 317 

Blue River above Green Mountain .Reservoir, Colo....................... 49

at Dillon, Colo...................... 41

below Green Mountain Reservoir, Colo. 55 

discharge measurement of............. 488

Blue River basin, Colo., discharge.

measurements in.................. 486

gaging-station records in............ 41-55

Bluff, Utah, San Juan River near....... 336

Blythe, Calif., Palo Verde Canal near.386-388 

Bonita Creek, Ariz., discharge measurement of.......................... 488

Boreas Pass ditch, Colo., diversion by340,342 

Boulder, Utah, Boulder Creek near...... 297

East Fork Deer Creek near............ 296

Boulder, Wyo., Boulder Creek near...... 169

New Fork River near.................. 168

Boulder Creek (tributary to Blue River)

near Dillon, Colo................ 47

Boulder Creek (tributary to Escalante

River) near Boulder, Utah........ 297

Boulder Creek (tributary to New York 

River) below Boulder Lake, near 

Boulder, Wyo..................... 169

Bright Angel Creek near Grand Canyon,

Ariz............................. 363

Brown Canal, Ariz., diversion by....... 415

Brown Duck Creek near Mountain Home,

Utah............................. 245

Browns Wash near Green River, Utah..... 281

Brush Creek above cave, near Vernal,

Utah............................. 213

near Eagle , Colo..................... 65

near Jensen, Utah.................... 217

near Vernal, Utah.................... 214

Buckeye Reservoir Outlet near Paradox,

Colo.. ........................... 136

Bull Creek at upper station, near

Molina, Colo..................... 88

Bunkerville Canal, Nev., discharge

measurement of................... 487

Burntfork, Wyo., Burnt Fork near....... 194

Henrys Fork near...................... 193

Burnt Fork near Burntfork, Wyo......... 194

Burro Creek, Ariz., discharge measurement of.......................... 488

Busk Ivanhoe tunnel, Colo., diversion

by..............................340,342

Buzzard Creek near Collbran, Colo...... 84

Caliente, Nev., Meadow Valley Wash

near............................. 370

491
492 INDEX

California drainage canal, Calif., 

return surface flow from, to 

Colorado River...............

Calva, Ariz., Gila River at........

Cameo, Colo., Colorado River near.. 

Plateau Creek near.

483 

417 

81 

90 

Cameron, Ariz., Little Colorado River

 near. .....'....................... 361

Camp Verde, Ariz., Beaver Creek at..... 459

Verde River at......................455 ,458

Verde River at Childs, near.......... 460

Camp Wash Falls Springs, Ariz., discharge measurement of............ 487

Candland ditch, Utah, diversion by....341,342

Carbondale, Colo., Cattle Creek near... 77 

Thompson Creek near.................. 76

Carrizo Creek near Show Low, Ariz...... 447

Carter Creek at mouth, near Manila,

Utah............................. 201

near Manila, Utah.................... 800

Casa Grande Ca-nal. See Florence-Casa

Grande Canal.

Castle Creek (tributary to Colorado 

River) above diversions, near 

Moab, Utah....................... 154

near Moab, Utah...................... 155

Castle Dale, Utah, Cottonwood Creek

near............................. 284

Perron Creek near.................... 286

San Rafael River ne.ar. ............... 287

Cataract Creek above Green Mountain

Reservoir, Colo.................. 52

Cattle Creek near Carbondale, Colo..... 77

Cave Creek, Ariz., discharge measurement of.......................... 488

Cave Creek Canal, Ariz., discharge

measurement of................... 488

Cebolla Creek at Powderhorn, Colo...... 105

near Lake City, Colo. ................ 104

Cedar Creek tunnel, Utah, diversion by 341,842

Cedar Hill, N. Mex., Animas River near. 323

Cedaredge, Colo., Currant Creek near... 119

Leroux Creek near.................... 118

Surface Creek at..................... 121

Surface Creek near................... 120

Ward Creek near....................... 123

Cement Creek near Crested Butte, Colo.. 96 

Central, Utah, Santa Clara Creek near.. 366 

Cfs-day, definition of................. 2

Charleston, Ariz., San Pedro River at 423,424 

Cherry Creek (Gila River basin), Ariz.,

discharge measurement of.......... 490

Chevelon Fork below Wildcat Canyon,

near Winslow, Ariz............... 355

near Winslow', Ariz ................... 356

Chromo, Colo., Little Navajo River at.. 305 

Navajo River near.................... 304

Chrysotile, Ariz., Salt River near..... 448

Cibecue Creek, Ariz., discharge measurements of...................... 490

Cimarron Creek below Squaw Creek, at

Cimarron, Colo................... 109

Cisco, Utah, Colorado River near....... 158

Dolores River near................... 151

Citizens ditch near Turley, N. Mex...,. 316 

Clark, Colo., Elk River at............. 204

Clarkdale, Ariz., Verde River near.,,,. 453 

Clear Creek below Willow Creek, near

Winslow, Ariz.................... 357

near Winslow, Ariz................... 358

Cliff, N. Mex., Gila River near..,,.,.. 391 

Clifton, Ariz., Gila River near........ 403

San Francisco River at............... 407

Clover Creek near Neola, Utah.......... 254

Coal Fork ditch, Utah, diversion by...341,342 

Collbran, Colo., Big Creek near........ 85,86

Buezard Creek near................... 84

Plateau Creek near................... 82,83

Colmenero Canal, Ariz., diversion by... 402 

Colona, Colo., Uncompahgre River at.... 126

Colorado River at Glenwood Springs,

Colo............................. 69

at Kite, Utah........................ 292

at Hot Sulphur Springs, Colo. ........ 34

at Imperial Dam, Ariz.-Calif......... 389

at international boundary above

Morelos Dam, near Andrade, Calif. 474

Page 

Colorado River at Lees Ferry, Ariz.... 4, 337

at Needles, Calif................... 376

at Yuma, Ariz....................... 473

below Davis Dam, Ariz.-Nev.......... 375

below Granby Reservoir, Colo........ 24

below Hoover Dam, Ariz.-Nev......... 373

below Parker Dam, Ariz.-Calif....... 384

below Shadow Mountain Dam, Colo..... 19

diversion from.....................340-342

near Cameo, Colo.................... 81

near Cisco, Utah.................... 152

near Colorado Utah State line....... 131

near Dotsero, Colo.................. 68

near Granby, Colo................... 25

near Grand Canyon, Ariz............. 362

near Grand Lake, Colo............... 13

near Topock, Ariz..................377-378

return surface flows to............483-484

Colorado River aqueduct, diversion to. 384 

Colorado River Indian Reservation, diversion for, near Parker, Ariz. 385 

Columbine Creek above Granby Reservoir, near Grand Lake, Colo..... 20

Columbine ditch, Colo., diversion by.340,342 

Colvin-Jones Canal, Ariz., diversion

by.............................. 415

Computations, accuracy of results of.. 7-8 

Concho Creek, Ariz., discharge measurement s of..................... 487

Contents, definition of............... 2

Continental Divide ditch, Colo., diversion by......'................ 341

Control, definition of................ 2

Cooks Lake, Ariz., discharge measurements of........................ 489

Coolidge Dam, Ariz., Gila River below. 420 

San Carlos Reservoir at............. 419

Cooper wasteway, Ariz., return surface

flows from, to Colorado River... 483 

Cooperation, record of................ 2

Cooperative Canal, Ariz., discharge of 429 

Cora, Wyo., New Fork River near....... 164

Cornville, Ariz., Oak Creek near...... 454

Cortaro, Ariz., Santa Cruz River at... 439 

Cortez, Colo., McElmo Creek near...... 334

Cottonwood Creek (tributary to Green

River) near Daniel, Wyo......... 163

Cottonwood Creek (tributary to Plateau 

Creek) at upper station, near 

Molina, Colo.................... 87

Cottonwood Creek (tributary to San

Miguel River) near Nucla, Colo.. 143 

Cottonwood Creek (tributary to San

Rafael River) near Castle Dale,

Utah............................ 284

near Orangeville, Utah.............. 283

Crawford, Colo., Iron Creek near...... 114

Smith'Fork near..................... 113

Crested Butte, Colo., Cement Creek

near............................ 96

East River near..................... 94

Slate River near.................... 95

Crystal Creek near Maher, Colo.......110-111

Crystal River near Redstone, Colo..... 4,75

Cubic feet per second per square mile,

definition of................... 2

Cubic foot per second, definition of.. 2 

Curecanti Creek near Sapinero, Colo... 108 

Currant Creek (Gree.n River basin) 

below Red Ledge Hollow, near 

Fruitland, Utah................. 240

near Fruitland, Utah................ 242

Currant Creek (Gunnison River basin)

near Cedaredge, Colo............ 119

Curtis Canal, Ariz., diversion by...... 415

Dallas Creek, East Fork, near Ridgway,

Colo....'........................ 125

Daniel, Wyo., Beaver Creek near....... 161

Cottonwood Creek near............... 163

Green River near. .................... 160

Horse Creek near.................... 162

Data, accuracy of..................... 7-8

explanation of...................... 3-7

Davis Dam, Ariz.-Nev., Colorado River

below........................... 375

Lake Mohave at...................... 374
INDEX

Page 

Deep Creek near Lapoint, Utah.......... 260

near Paradox, Colo................... 148

Deer Creek, East Pork, near Boulder,

Utah............................. 296

Delta, Colo., Roubideau Creek near..... 128

Unoompahgre River at................. 127

Dillon, Colo., Blue River at........... 41

Boulder Creek near................... 47

Rock Creek near...................... 46

Slate Creek near..................... 48

Snake River at....................... 42

Straight Creek near.................. 44

Tenmile Creek at..................... 43

Willow Creek near.................... 45

Dirty Devil River basin, Utah, gagingstation records in..............289-291

Dixon, Wyo., Little Snake River near... 210 

Dodge-Nevada Canal, Ariz., diversion by 415 

Dolores, Colo., Dolores River at....... 133

Dolores River at Dolores, Colo......... 133

at Gateway, Colo..................... 150

near Cisco, Utah..................... 151

near McPhee, Colo.................... 134

tributaries between, and Green River,

gaging station records of.......153-159

West Pork near Dunton, Colo.......... 132

Dolores River basin, Colo., gagingstation records in..............132-151

Dome, Ariz.., Gila River near........... 472

Dotsero, Colo., Colorado River near.... 68

Douglas, Ariz., Whitewater Draw near... 485 

Drainage area, definition of........... 3

Dry Fork above sinks, near Dry Pork,

Utah............................. 222

East Fork of, at mouth, near Dry

Pork, Utah....................... 225

near Dry Fork, Utah................ 224

North Pork of, near Dry Fork, Utah... 223 

Dry Gulch near Neola, Utah.;........... 261

Duchesne, Utah, Duchesne River at...... 237

Strawberry River at.................. 24^3

Duchesne River at Duchesne, Utah....... 23*7

at Myton, Utah....................... 251

at Provo River Trail, near Hanna,

Utah............................. 228

near Hanna, Utah..................... 230

near Randlett, Utah.................. 263

near Tabiona, Utah................... 234

West Fork, below Dry Hollow, near

Hanna, Utah...................... 231

near Hanna, Utah................... 232

Duncan, Ariz., Gila River near.......... 399

Duncan Canal, Ariz., diversion by...... 402

Duncan Valley, N. Hex.-Ariz., diversions from Gila River in......... 402

Dunton, Colo., West Pork, Dolores River

near............................. 132

Durango, Colo., Animas River at........ 321

Florida River near................... 322

Eagle, Colo., Brush Creek near......... 65

Eagle Creek (tributary to Gila River) 

above pumping plant, near 

Morenci, Ariz.................... 413

dischargte measurements of............ 488

near Double Circle Ranch, near

Morenci, Ariz.................... 412

pumpage from......................... 413

Eagle River at Redcliff, Colo.......... 58

below Gypsum, Colo................... 67

Eagle River basin discharge measurements in. 486 

gaging station records jn............ 58-67

East Pork near Big Sandy, Wyo.......... 170

East Inlet near Grand Lake, Colo....... 17

East Main Canal, Ariz., return surface

flows from....................... 484

East Mancos River near Mancos, Colo.... 331

East Muddy Creek near Bardine, Colo.... 115

East River at Almont, Colo............. 97

near Crested Butte, Colo............. 94

East Turkey Creek, Ariz., discharge

measurement of................... 488

Eckert, Colo., Surface Creek at........ 122

Edith, Colo., Navajo River at.......... 306

El-even-mile wasteway, Ariz., return

surface flows from, to Colorado

River............................ 483

Page 

Elk River at Clark, Colo............... 204

Elkhorn, Wyo., Little Sandy Creek near 178 

Elliott Creek feeder canal to Green

Mountain Reservoir, Colo......... 53

Emery, Utah, Ivie Creek near........... 291

Enterprise Canal, Ariz., monthly diversion by....................... 471

Ephraim tunnel, Utah, diversion by...341,342 

Escalante, Utah, Birch Creek

near............................ 293

Esclanate River near................ 295

Pine Creek near..................... 294

Escalante River basin, Utah, gagingstation records in.............293-297

Estes Park, Colo., Alva B. Adams

tunnel near..................... 16

Eureka ditch, Colo., diversion by....340,342

Ewing ditch, Colo., diversion by.....340,342

Pairview ditch, Utah, diversion by...341,342 

Fall Creek (Dolores River basin) near

Pall Creek, Colo................ 139

Fall Creek (Green River basin) near

Pinedale, Wyo................... 167

Farm Creek near Whiterocks, Utah...... 256

Parmington, N. Mex., Animas River at.. 324

La Plata River near................. 328

San Juan River at................... 325

Perron Creek near Castle Dale, Utah... 286

(upper station) near Perron, Utah... 285 

Five Creek, Utah, discharge measurements of........................ 486

Floods, special reports on............ 11

Florence, Ariz., Gila River near...... 427

Plorence-Casa Grande Canal, diversions

to.............................. 427

Florida River near Durango, Colo...... 322

Fontenelle, Wyo., Pontenelle Creek

near............................ 176

Green River near.................... 175

Fontenelle Creek near Pontenelle, Wyo. 176 

Fort Apache, Ariz., Black River near.. 441

White River near...............444^445-446

Port Duchesne, Utah, Uinta River at... 262 

Fort Thomas Canal, Ariz., diversion by 415 

Pourness Canal, Ariz., diversion by... 415 

Fraser, Colo., Ranch Creek near....... 30

St. Louis Creek near................ 29

Praser River at Granby, Colo.......... 33

near Winter Park, Colo............... 27

Fraser River basin, Colo., gaging

station records in.............. 27-34

Premont Pass ditch, Colo., diversion .

by.............................340,342

near Bicknell, Utah................. 290

near Fremont, Utah.................. 289

Frontier, Wyo., Hams Fork near........ 186

Pruitland, Utah, Currant Creek near..240,242

Water Hollow near................... 241

Fryingpan Creek at Norrie, Colo....... 72

Puchs ditch, Colo., diversion by.....340,342

Gateview, Colo., Lake Fork at......... 107

Gateway, Colo., Dolores River at...... 150

Taylor Creek near................... 147

Geyser Creek near Paradox, Colo....... 148

Gila Bend Canal, Ariz., monthly diversion by...................... 471

Gila Gravity Main Canal at Imperial

Dam, Ariz.-Calif................ 475

Gila River at Ashurst-Hayden Dam, near

Florence, Ariz.................. 427

at Calva, Ariz...................... 417

at head of Safford Valley near

Solomon, Ariz.................... 414

at Kelvin, Ariz..................... 426

at Virden Bridge, near Duncan, Ariz. 399 

at Winkelman, Ariz.................. 421

below Blue Creek, near Virden,

N. Mex.......................... 395

below Coolidge Dam, Ariz............ 420

below Gillespie Dam, Ariz..........470-471

discharge measurements'of..........488,489

diversions from, in Duncan Valley,

N. Mex.-Ariz.................... 402

in Safford Valley, Ariz........... 415

near Cliff, N. Mex.................. 391
494 INDEX

Page

Gila River near Clifton, Ariz........... 403

near Dome, Ariz...................... 472

near Gila, N. Mex.................... 390

near Laveen.......................... 429

near Red Rock, N. Mex...............392-394

near Solomon, Ariz................... 414

See also Gila River and canals.

Gila Kiver basin, N. Mex.-Ariz., discharge measurements in..........488-490

gaging-station records in...........390-472

Gillespie Dam, Ariz., Gila River below 470-471

Glenwood, N. Mex., San Francisco River

near............................404-406

Glenwood Springs, Colo., Colorado River

at............................... 69

Roaring Pork at...................... 78

Gold Park, Colo., Homestake Creek at... 60

Gooseberry Creek near Scofield, Utah... 271

Gore Creek at upper station, near

Minturn, Colo.................... 62

near Minturn, Colo................... 64

Graham Canal', Ariz., diversion by...... 415

Granby, Colo., Colorado River near..... 25

Eraser River at...................... 33

Granby Reservoir near................ 23

Willow Creek near.................... 26

Granby Reservoir, Colo. , Colorado River

below............................ 24

near Granby, Colo.................... 23

Grand Canyon, Ariz., Bright Angel Creek

near............................. 363

Colorado River near.................. 362

Grand Falls, Ariz., Little Colorado

River at......................... 359

Grand Junction, Colo., Gunnison River

near............................. 130

Grand Lake, Colo., Colorado River near. 13 

Columbine Creek near................. 20

East Inlet near...................... 17

Little Columbine Creek at............ 14

North Inlet at....................... 15

Shadow Mountain Reservoir near....... 18

Stillwater Creek near................ 22

Grand Lake basin, Colo., gaging-station

records in....................... 15-17

Grand River ditch, Colo.,diversion by 340,342

Grand Valley, Colo., Parachute Creek

at............................... 80

Parachute Creek near................. 79

Green Mountain Reservoir, Colo., Black

Creek above...................... 50

Blue River above..................... 49

Blue River below..................... 55

Cataract Creek above................. 52

Ell-lot t Creek feeder canal to........ 53

near Kremmling, Colo................. 54

Otter Creek above.................... 51

Green River, Utah, Browns Wash near.... 281

Green River at....................... 280

San Rafael River near................ 288

Green River, Wyo., Blacks Fork near.... 187 

Green River near..................... 179

Green River at Green River, Utah....... 280

at Warren Bridge, near Daniel, Wyo... 160 

near Fontenelle, Wyo................. 175

near Green River, Wyo................ 179

near Greendale, Utah................. 202

near Jensen, Utah.................... 212

near Linwood, Utah................... 188

near Ouray, Utah..................... 264

tributaries between, Dolores and 

Green Rivers, gaging-station 

records of......................153-159

Green River basin, Wyo.-Utah-Colo.,

discharge measurements in........ 486

gaging-station records in...........160-288

Greendale, Utah, Green River near...... 202

Gunnison, Colo., Gunnison River near... 98 

Tomichi Creek at..................... 101

Gunnison River at Tola, Colo..........102-103

below Gunnison tunnel, Colo.......... 112

near Qrand Junction, Colo............ 130

near Gunnison, Colo.................. 98

North Pork, near Somerset, Colo...... 117

Gunnison River basin, Colo., discharge

measurements in.................. 486

gaging-station records in............91-130

Page 

Gunnison tunnel, Colo., Gunnison River

below........................... 112

diversion through................... 112

Gypsum, Colo., Eagle River below...... 67

Gypsum Creek near................... 66

Gypsum Creek near Gypsum, Colo. ....... 66

Hades Creek near Hanna, Utah.......... 229

north diversion of, Utah, discharge

measurements of................. 486

south diversion of, Utah, discharge

measurements of................. 486

Hams Fork near Frontier, Wyo.......... 186

Hanna, Utah, Duchesne River near.....228,230

Hades Creek near.................... 229

Rock Creek near..................... 235

West Pork Duchesne River near......231,232

Wolf Creek above Rhodes Canyon, near 233 

Hassayarapa River at Box dam site, near

Wickenburg, Ariz................ 469

Havasu Creek, Ariz., discharge measurement of...................... 487

Havasau Lake near Parker Dam, Ariz. ,

Calif..........................382-382

Heiner, Utah, Price River near ....... 276

Henrieville Creek near Henrieville,

Utah............................ 338

Henrys Fork at Linwood, Utah.......... 195

near Burntfork, Wyo................. 193

near Lonetree, Wyo.................. 189

Henson Creek, Colo., discharge measurement of...................... 486

Hermosa Creek near Hermosa, Colo...... 320

Hesperus, Colo., La Plata River at.... 326

Hite, Utah, Colorado River at......... 292

Hobble Creek ditch (lower), Utah, diversion by.....................341,342

Hobble Creek ditch (upper), Utah, diversion by.....................341,342

Holbrook, Ariz., Little Colorado River

at. ............................. 354

Homestake Creek at Gold Park, Colo.... 60

discharge measurements of........... 486

near Redcliff, Colo................. 61

Hoover Dam, Ariz.-Nev., Colorado River

below........................... 373

Lake Mead at........................ 372

Horse Creek near Daniel, Wyo.......... 162

Horsefly Creek near Sams, Colo........ 142

Horseshoe Dam, Ariz., Reservoir system

on Verde River at and below..,.. 462 

Verde River above................... 461

Horseshoe tunnel, Utah, diversion by.341,342 

Hot Sulphur Spring, Colo., Colorado

River at........................ 34

Howardsville, Colo., Animas River at.. 318 

Hunt, Ariz., Little Colorado River

near...........................347,348

Hunter Creek near Aspen, Colo......... 71

Huntington Creek near Huntington, Utah 282 

Hydrological conditions............... 12

diagram of.......................... 12

Ignacio, Colo., Los Pinos River at.... 313

Imperial Dam, Ariz.-Calif., AllAmerican Canal near............. 476

Colorado River at................... 389

diversions and return flows at and

below. .........................475-484

Gila Gravity Main Canal at.......... 475

Indian Creek above Cottonwood Creek,

near Monticello, Utah........... 159

near Monticello, Utah............... 158

Indian Creek basin, Utah, discharge

measurements in. .............. , f 486

lola, Colo., Gunnison River at.......* 102

Iron Creek near Crawford, Colo........ 114

Ironton, Colo., Red Mountain Creek

near............................ 124

Ivie Creek above diversions, near

Emery, Utah..................... 291

Jensen, Utah, Ashley Creek near....... 227

Brush Creek near.................... 217

Green River near. .................... 212

John August ditch, Utah, diversion by341,342

Jones Canal. See Colvln-Jones Canal..

Jones Pass tunneT, Colo..diversion by340,342
INDEX 495

Page 

Kahnah Creek near Whitewater, Colo...... 129

Kelvin, Ariz., Gila River at............ 426

Keyser Creek near Leal, Colo............ 36

Kremmling, Colo., Green Mountain Reservoir near......................... 54

La Barge Creek near La Barge Meadows

ranger station, Wyo............... 174

La Boca, Colo., Los Pinos River at...... 314

Spring Creek at....................... 315

La Plata River at Colorado-New Mexico

State line........................ 327

at Hesperus, Colo..................... 326

near Parmington, N. Mex............... 328

La Sal, Utah, Twomile Creek near........ 135

Laguna Dam (Colorado River), Ariz.,

North Gila Valley Canal at........ 482

Lake City, Colo., Cebolla Creek near.... 104

Lake Pork (Green River basin) above Moon

Lake, near Mountain Home, Utah.... 244

below Moon Lake, near Mountain Home,

Utah.............................. 247

near Upaloo, Utah..................... 250

Lake Pork (Gunnison River basin) at

Gateview, Colo.................... 107

discharge measurement of.............. 486

Lake Mead at Hoover Dam, Ariz.-Nev...... 372

Lake Mohave at Davis Dam, Ariz.-Nev..... 374

Lake Pleasant at Lake Pleasant Dam,

Ariz.............................. 468

Lake Plessant Dam, Ariz., Agua Fria

River at.........................466-467

Lake Pleasant at...................... 468

Lapoint, Utah, Deep Creek near.......... 260

Larkspur ditch, Colo., diversion by....340,342

Larsen tunnel, Utah, diversion by......341,342

Laskey Gulch, Colo., discharge measurements of.......................... 486

Laveen, Ariz., Gila River near.......... 429

Santa Cruz River near................. 440

Leal, Colo., Keyser Creek near.......... 36

Williams River near................... 35

Lees Perry, Ariz., Colorado River at....4, 337

Paria River at........................ 339

Leroux Creek near Cedaredge, Colo....... 118

Lily, Colo...Little Snake River near.... 211

Lime Creek at Thomasville, Colo......... 74

at Troutville, Colo................... 73

Linwood, Utah, Green River near......... 188

Henrys Fork at........................ 195

Little Brush Creek below East Park Reservoir , near Vernal, Utah......... 215

near Vernal, Utah..................... 216

Little Colorado River above Lyman Reservoir, near St. Johns, Ariz........ 343

above Zuni River, near Hunt, Ariz..... 347

at Grand Palls, Ariz.................. £59

at Holbrook, Ariz..................... 354

at Woodruff, Ariz..................... 353

below Lyman Reservoir, near St. Johns,

Ariz......:....................... 346

discharge measurements of............. 487

near Cameron, Ariz........ i ........... 361

near Hunt, Ariz....................... 348

Little Colorado River basin, Ariz.-

N. Mex., discharge measurements in 487 

gaging-station records in............343-361

Little Columbine Creek above Shadow

Mountain Reservoir, at Grand Lake, 

Colo.............................. 14

Little Navajo River at Chromo, Colo..... 305

Little Sandy Creek near Elkhorn, Wyo.... 178

Little Snake River near Dixon, Wyo...... 210

near Lily, Colo....................... 211

near Slater, Colo........'............. 206

Littlefield, Ariz., Virgin River at..... 369

Littlefield Canal, Ariz., discharge

measurement of.................... 487

Littlefield Springs, Ariz., discharge

measurement of.................... 487

Lochiel, Ariz., Santa Cruz River near... 430 

Lonetree, Wyo., East Fork Beaver Creek

near.............................. 191

Henrys Pork near...................... 189

Middle Pork Beaver Creek near......... 190

West Pork Beaver Creek near........... 192

Los Pinos River at Ignacio, Colo........ 313

Page 

Los Pinos River at La Boca, Colo..... 314

below Snowslide Canyon, near Weminuche Pass, Colo................ 310

near Bayfield, Colo................ 312

Lyman, Wyo., Blacks Pork near........ 185

Lyman Canal below Lyman Reservoir,

near St. Johns, Ariz........... 345

Lyman Reservoir near St. Johns, Ariz. 344

McElmo Creek near Colorado-Utah State

line........................... 335

near Cortez, Colo.................. 334

McNary, Ariz., White River near...... 442

McPhee, Colo., Dolores River near.... 134

Madsen ditch, Utah, diversion by....341,342

Maher, Colo., Crystal Creek near....110-111

Main drain, Ariz., return surface

flows from....................483-484

Mancos, Colo., East Mancos River near 331 

Middle Mancos River near........... 332

WeWest Mancos River near............. 330

Mancos River near Towaoc, Colo....... 333

Manila, Utah, Carter Creek near.....200 ,201

Sheep Creek near..........196,197,198,199

Map of the United States............. 9

Mason, Wyo., North Piney Creek near.. 172 

Maybell, Colo., Yampa River near..... 205

Mayer, Ariz., Agua Pria River near... 465 

Meadow Creek near Tabernash, Colo.... 32

Meadow Valley Wash near Caliente,

Nev............................ 370

Meeker, Colo., White River near...... 265

Mesa Creek near Mesa, Colo........... 89

Middle Mancos River near Mancos, Cola 332 

Middle Piney Creek below South Fork,

near Big Piney, Wyo............ 173

Mill Creek near Moab, Utah..........156-157

Millburne, Wyo., Blacks Pork near.... 180

Minnie Maud Creek at Nutter Ranch,

near Myton, Utah............... 270

near Myton, Utah................... 269

Minturn, Colo., Black Gore Creek near 63 

Gore Creek near.................... 62,64

Piney River near................... 56

Moab, Utah, Castle Creek near.......154,155

Mill Creek near...................156-157

Rock Creek near.................... 153

Moddle Canal at New Mexico-Arizona 

State line, near Virden, 

N. Mex......................... 401

diversion by....................... 402

near Virden, N. Mex................ 400

Moenkopi Wash near Tuba, Ariz........ 360

\Moffat tunnel, Colo., diversion by..340,342 

\Molina, Colo., Bull Creek near....... 88

Cottonwood Creek near.............. 87

Monarch Lake Outlet, Calif., Arapaho

Creek at....................... 21

Montezuma Canal, Ariz., diversion by. 415 

Montezuma Well outflow, Ariz., discharge measurement of.......... 490

Monticello, Utah, Indian Creek near.158,159 

Moon Lake Reservoir near Mountain

Home, Utah..................... 246

Morenci, Ariz., Eagle Creek near... .412,413

Willow Creek near.............409-410,411

Willow Creek diversion from Black

River, near..................... 408

Mount Lemmon, Ariz., Sabino Creek

near........................... 436

Mountain Home, Utah, Brown Duck Creek

near........................... 245

Lake Pork near....................244,247

Moon Lake Reservoir, near........... 246

Rock Creek near.................... 236

Mountainview, Wyo., Smith Fork at...'. 184 

Muddy Creek at Sardine, Colo......... 116

Muddy River near Overton, Neb........ 371

Myton, Utah, Duchesne River at....... 251

Minnie Maud Creek near............269,270

Naturita, Colo., San Miguel River at. 145 

Naturita Creek near Norwood, Colo.... 144

Navajo River at Banded Peak Ranch,

near Chromo, Colo.............. 304

at Edith, Colo..................... 306

Needles, Calif., Colorado River at... 376
496 INDEX

Page 

Neola, Utah, Clover Creek near......... 254

Dry Gulch near........................ 261

Uinta River near................252,253,255

Nevada Canal. See Dodge-Nevada Canal.. 

New Fork River T5eTow New Pork Lake,

near Cora, Wyo................... 164

near Boulder, Wyo.................... 168

Nogales, Ariz., Santa Cruz River near.431-432 

Norrie, Colo., Fryingpan Creek at...... 72

North Gila Valley Canal at Laguna Dam,

Ariz.-Calif...................... 482

North Inlet at Grand Lake, Colo........ 15

North Piney Creek near Mason, Wyo...... 172

Norwood, Colo., Beaver Creek near...... 141

Naturita Creek near.................. 144

Nuola, Colo., Cottonwood Creek near.... 143

Tabeguache Creek near................ 146

Oak Creek, Ariz., discharge measurements of......................... 490

near -Cornville , Ariz................. 454

Oaks Park Canal near Vernal, Utah...... 220

Orangeville, Utah, Cottonwood Creek

near............................. 283

Order, new downstream list of gaging

stations......................... 3

Otter Creek above Green Mountain Reservoir, Colo. .................... 51

Ouray, Utah, Green River near.......... 264

Willow Creek near...................267,268

Overton, Nev., Muddy River near........ 371

P. Z. ditch, Ariz., discharge measurement of......................... c\

Pagosa Springs, Colo., Piedra River

near.............................

Rio Blanco near..;...................

Rito Blanco near.....................

San Juan River at....................

San Juan River near..................

307

302

303 

301 

298 

West Fork San Juan River near.......299,300

Palo Verde Canal near Blythe, Calif.. .386-388

Palominas, Ariz., San Pedro River at... 422

Parachute Creek at Grand Valley, Colo.. 80

near Grand Valley, Colo.............. 79

Parachute Creek basin, Colo., gagingstation records in............... 79-80

Paradise Creek near Whiterocks, Utah... 258 

Paradise ditch, Utah, discharge measurements of......................... 487

Paradox, Colo., Buckeye Reservoir Outlet near......................... 136

Deep Creek near...................... 148

Geyser Creek near.................... 148

West Paradox Creek near.............. 137

Paria River at Lees Perry, Ariz........ 339

Paria River basin, Ariz., Utah, gagingstation records in..............338-339

Parker, Ariz., diversion for Colorado

River Indian Reservation-near.... 385

Parker Dam, Ariz.-Calif., Colorado

River below...................... 384

diversions between, and Imperial Dam 385-386 

Havasu Lake near................... .382-383

Parlin, Colo., Tomichi Creek at........ 100

Parshall, Colo., Williams Pork Reservoir near........................ 38

Williams River near.................. 37

Patagonia, Ariz.., Sonoita Creek near... 433 

Paul Adam ditch, Ariz., discharge measurement of....................... 489

Peridot, Ariz., San Carlos River near.. 418 

Petrified Springs, Ariz. , discharge

measurements of..'................ 487

Piedra Pass ditch, Colo., diversion by340,342 

Piedra River at Bridge ranger station,

near Pagosa Springs, Colo........ 307

near Piedra, Colo.................... 308

Pilot Knob wasteway, Calif., AilAmerican Canal above............. 480

near Pilot Knob, Calif............... 481

Pine Creek (Green River basin) at Pinedale , Wyo........................ 165

pine Creek (Escalante River basin) near

Escalante, Utah. .................. 294

Pine River. See Los Pinos River.

Pinedale, Wyo., .b'all Creek near........ 167

Page 

Pinedale, Wyo., Pine Creek at......... 165

Pole Creek near..................... 166

Piney River below Piney Lake, near

Minturn, Colo................... 56

near State Bridge, Colo............. 57

Piney River basin, Colo., gagingstation records in.............. 56,57

Placerville, Colo., San Miguel River

near............................ 140

Planet, Ariz., Bill Williams River

near............................ 381

Plateau Creek at Upper station near

Collbran, Colo.................. 82

near Cameo, Colo.................... 90

near Collbran, Colo................. 83

Plateau Creek basin, Colo., gagingstation records in.............. 82-90

Pole Creek below Little Half Moon

Lake near Pinedale, Wyo......... 166

Pole Creek power canal, Utah, discharge measurements of.......... 487

Powderhorn, Colo., Cebolla Creek at... 105 

Price River above Scofield Reservoir,

near Scofield, Utah............. 272

at Woodside , Utah................... 279

near Heiner, Utah................... 276

near Scofield, Utah................. 274

near Wellington, Utah..............277-278

Publications on stream flow by Geological Survey................... 8-11

by State agencies................... 11

Putman Spring, Ariz., discharge measurements of..................... 489

Queen Creek at Whitlow dam site, near

Superior, Ariz.................. 428

Raber-Lohr ditch, Colo., diversion by340,342 

Ranch Creek near Praser, Colo......... 30

near Tabernash, Colo................ 31

Randlett, Utah, Duchesne River near... 263 

Red Mountain Creek near Ironton, Colo. 124 

Red Rock, N. Mex. , Gila River near... 392-394 

Redcliff, Colo., Eagle River at........ 58

Homestake Creek near................ 61

Turkey Creek at..................... 59

Redington, Ariz., San Pedro River near 425 

Redstone, Colo., Crystal River near... 4, 75 

Reeder ditch, Utah, diversion by.....341,342

Ridgway, Colo., East Pork Dallas

Creek near...................... 125

Rillito Creek near Tucson, Ariz....... 438

Rio Blanco near Pagosa Springs, Colo... 302 

Rito Blanco near Pagosa Springs, Colo. 303 

Roaring Pork at Aspen, Colo. .......... 70

at Glenwood Springs, Colo........... 78

Roaring Pork basin, Colo., gaging

station records in.............. 70-78

Robertson, Wyo., East Pork of Smith

Pork near....................... 182

West Pork of Smith Pork near........ 183

Roc Creek near Uranium, Colo.......... 149

Rock Creek (tributary to Blue River), 

near Dillon, Colo

Rock Creek

River 

Rock Creek

tributary to Colorado 

near Moab, Utah, 

tributary to Duchesne

River) near Hanna, Utah, 

near Mountain Home, Utah............

Roosevelt, Ariz., Salt River near.....

Tonto Creek near....................

Roosevelt Dam, Ariz., Reservoir system 

on Salt River at and below......

Rosa, N. Mex., San Juan River at......

Roubideau Creek at mouth, near Delta, 

Colo............................

Runoff in inches, definition of.......

46

153

235

236

449

450

451

309

128

2

Sabino Creek near Mount Lemmon, Ariz.. 436 

near Tucson, Ariz................... 437

Safford Valley, Ariz., diversions from

Gila River in................... 415

St. George, Utah, Santa Clara River at 368 

St. Johns, Ariz., Little Colorado

River near.....................343,346

Lyman Canal near.................... 345

Lyman Reservoir near................ 344
497

St. Louis Creek near Fraser, Colo...... 29

Salt River below Stewart Mountain Dam,

Ariz............................. 452

discharge measurements of............ 490

near Chrysotile, Ariz................ 448

near Roosevelt, Ariz................. 449

reservoir system on, at and below

Roosevelt Dam, Ariz.............. 451

Salt River Draw, Ariz., discharge measurements of...................... 490

Salt Spring, Ariz., discharge measurement of.......................... 490

Sams, Colo., Horsefly Creek near....... 142

San Carlos Reservoir at Coolidge Dam,

Ariz............................. 419

San Carlos River near Peridot, Ariz.... 418

San Francisco River at Clifton, Ariz... 407

pumpage from

San Jose Canal, Ariz.,'diversion by...

San Juan River at Farmington, N. Mex..

at Pagosa Springs, Colo.............

at Rosa, N. Mex.....................

at Ship Rock, N. Mex................

near Blanco, N. Mex.................

near Bluff, Utah....................

near Pagosa Springs, Colo...........

West Fork, above Borns Lake, near

Pagosa Springs, Colo............. 299

near Pagosa Springs, Colo.......... 300

San Juan River basin, Colo.-N. Mex.-

Dtah, gaging-station records in.298-336 

San Miguel River at Naturita, Colo..... 145

near Placerville, Colo............... 140

San Pedro River at Charleston, Ariz...423-424 

at palominas, Ariz................... 422

discharge measurement of............488 ,489

near Redington, Ariz................. 425

San Rafael River near Castle Dale, Utah 287 

near Green River, Utah............... 288

near Solomon, Ariz................... 416

Santa Clara River above Winsor Dam,

near Santa Clara, Utah,.......... 367

at St. George, Utah.................. 368

near Central, Utah................... 366

Santa Cruz River at Cortaro, Ariz...... 439

at Tucson, Ariz...................... 434

near Laveen, Ariz.................... 440

near Lochiel, Ariz................... 430

near Nogales, Ariz..................431-432

Santa Maria River, Ariz., discharge

measurements of.................. 488

near Alamo, Ariz..................... 379

Sapinero, Colo., Curecanti Creek near.. 108 

Sapinero Creek at Sapinero, Colo....... 106

Sargents, Colo., Tomichi Creek at...... 99

Savery Creek near Savery, Wyo.......... 209

Scofield, Utah, Gooseberry Creek near.. 271 

Price River near.................... 272,274

Scofield Reservoir near.............. 273

Scofield Reservoir near Scofield, Utah. 273 

Sexton Canals, Ariz., diversion by..... 402

Shadow Mountain Reservoir, Colo.,

Colorado River below............. 19

near Grand Lake,

Colo................................ 18

Sheep Creek at mouth, near Manila, Utah 199 

lower canal near Manila, Utah........ 197

near Manila, Utah.................... 198

upper canal near Manila, Utah........ 196

Ship Rock, N. Mex., San Juan River at.. 329 

Show Low, Ariz., Carrizo Creek near.... 447

Show Low Creek near Show Low, Ariz..... 350

Shumway, Ariz., Silver Creek near...... 349

Silver Creek (tributary to East Fork)

near Big Sandy, Wyo.............. 171

Silver Creek (tributary to Little 

Colorado River) near Shumway, 

Ariz............................. 349

near Snowflake, Ariz................. 351

near Woodruff, Ariz.................. 352

Simpson Creek, Colo., discharge measurements of...................... 486

Slate Creek near Dill on, Colo.......... 48

Slate River near Crested Butte, Colo... 95 

Slater, Colo., Battle Creek near....... 207

Little Snake River near.............. 206

Slater Fork near..................... 208

Slater Fork near Slater, Colo.......... 208

Page

Slim Creek Springs, Ariz., discharge

measurement of.................. 487

Smith Fork (tributary to Blacks Fork)

at Mountainview, Wyo............ 184

East Fork, near Robertson, Wyo...... 182

West Fork, near Robertson, Wyo...... 183

Smith Fork (tributary to Gunnison

River) near Crawford, Colo...... 113

Smithville Canal, Ariz., diversion by. 415

Snake River at Dillon, Colo........... 42

Snowflake, Ariz., Silver Creek near... 351

Soldier Springs, Utah, Strawberry

Reservoir near.................. 238

Strawberry River near............... 239

Soldier Summit, Utah, White River near 275

Solomon, Ariz., Gila River near....... 414

San Simon Creek near................ 416

Somerset, Colo., North Fork Gunnison

River near...................... 117

Sonoita Creek near Patagonia, Ariz.... 433

South Fork, Utah, discharge measurements of........................ 486

Spring City tunnel, Utah, diversion

by.............................341,342

Spring Creek at La Boca, Colo......... 315

Springdale, Utah, North Fork Virgin

River near...................... 364

Squaw Pass ditch, Colo., diversion by340,342

Stage-discharge relation, definition

of.............................. 2

State Bridge, Colo., Piney River, near. 57

Steamboat Springs, Colo., Yampa River

at.............................. 203

Stewart Mountain Dam, Ariz., Salt

River below..................... 452

Stillwater Creek above Granby Reservoir, near Grand Lake, Colo..... 22

Straight Creek near Dillon, Colo...... 44

Strawberry Reservoir near Soldier

Springs , Utah................... 238

Strawberry River at Duchesne, Utah.... 243 

near Soldier Springs, Utah.......... 239

Strawberry River ditch, Utah, diversions by.......................341,342

Strawberry tunnel, Utah, diversion

by.............................341,342

Sulphur Spring Valley, Ariz., gagingstation record in............... 485

Sunset Canal above New Mexico-Arizona

State line, near Virden, N. Mex. 397 

diversion by........................ 402

near Virden, N. Mex................. 396

Sunset Canal wasteway near Virden,

N. Mex.......................... 398

Superior, Ariz., Queen Creek near..... 428

Surface Creek at Cedaredge, Colo...... 121

at Eckert, Colo...................... 122

near Cedaredge, Colo................ 120

Sycamore Creek, Ariz., discharge

measurement of.................. 490

Tabeguache Creek near Nucla, Colo..... 146 

Tabernash, Colo., Meadow Creek near... 32

Ranch Creek near.................... 31

Tabiona, Utah, Duchesne River near.... 234

Tabor ditch, Colo., Diversion by.....340,342

Tacoma, Colo., Animas River above..... 319

Tapeats Creek, Ariz., discharge .measurements of..................... 487

Tarbell ditch, Colo., diversion by...340,342 

Taylor Creek near Gateway, Colo....... 147

Taylor Park Reservoir at Taylor Park,

Colo............................ 91

Taylor River below.................. 92

Taylor River at Almont, Colo.......... 93

below Taylor Park Reservoir, Colo... 92 

Tenmile Creek at Dillon, Colo......... 43

North Fork, Colo., discharge measurements of..................... 486*

Terms, definition of.................. 2-3

Thomasville, Colo., Lime Creek at..... 74

Thompson Creek near Carbondale, Colo.. 76 

Tidwell Canal, Ariz., diversion by.... 415

Tomichi Creek at Gunnison, Colo....... 101

at Parlin, Colo..................... 100

at Sargents, Colo.'.................. 99

Tonto Creek above Gun Creek, near

Roosevelt, Ariz................. 450

Topock, Ariz., Colorado River near.. .377-378
498 INDEX

Towaoc, Colo. , Mancos River near........ 333

Treasure Pass ditch, Colo., diversion

by..............................430,342

Tributaries between Dolores River and

Green River, Utah, gaging station

records of......................153-159

Troublesome Creek near Troublesome,

Colo..........'................... 40

Troutville, Colo., Lime Creek at....... 73

Tuba, Ariz., Moenkopi Wash near........ 360

Tucson, Ariz., Rillito Creek near...... 438

Sabino Creek near.................... 43?

Santa Cruz River at.................. 434

Tucson Arroyo at Vine Avenue......... 435

Tucson Arroyo at Vine Avenue, Tucson,

Ariz............................. 435

Turkey Creek at Redcliff, Colo......... 59

Turley, N. Hex., Citizens ditch near... 316 

Twenty-one mile wasteway, Ariz., return

surface flows from, to Colorado

River............................ 483

Twin Creek tunnel, Utah, diversion by.341,342 

Twin Lakes tunnel, Colo., diversion

by..............................340,342

Twomile Creek near La Sal, Utah........ 135

Uinta River above Clover Creek, near

Neola, Utah...................... 253

at Fort Duchesne, Utah............... 262

below Gilbert Creek," near Neola, Utah 252

near Neola, Utah..................... 255

Uncompahgre River at Colona, Colo...... 126

at Delta, Colo....................... 127

Union Canal, Ariz., diversion by....... 415

Upalco, Utah, Lake Fork near........... 250

Uranium, Colo., Rock Creek near........ 149

Urie, Wyo., Blacks Fork near........... 181

Vallecito Reservoir near Bayfield, Cola 3ll 

Valley Canal, N. Mex., diversion by.... 402

Vasquez Creek near Winter Park, Colo... 28 

Verde River at Camp Verde, Ariz.......455-458

at Childs, near Camp Verde, Ariz..... 460

below Bartlett Dam, Ariz............. 463,

low Tangle Creek, above Horseshoe 

Dam, Ariz........................ 461

discharge measurement

of................................ 490!

near Clarkdale, Ariz................. 453

reservoir system on, at and below

Horseshoe Dam, Ariz.............. 462

Vernal, Utah, Ashley Creek near...218,221,226 

Brush Creek near..................... 213 ,214

Little Brush Creek near.............215,216

Oaks Park Canal near................. 220

South Fork Ashley Creek near......... 219

Virden, N. Mex., Gila River near....... 395

Moddle Canal near...................400,401

Sunset Canal near................... 396 ,397

Sunset Canal wasteway near........... 398

Virgin River at Littlefield, Ariz...... 369

at Virgin, Utah...................... 365

discharge measurement of............. 488

North Fork, near Springdale, Utah.... 364

Virgin River basin, Utah-Ariz.-Nev.,

discharge measurements in........ 487

gaging-station records in...........364-371

Ward Creek below Riser Creek, near

Cedaredge, Colo.................. 123

Warm Springs, Ariz., discharge measurements of........................488,490

Water Hollow near Fruitland, Utah...... 241

Watson, Utah, White River near......... 266

Wellington, Utah, Price River near....277-278

Weminuche Pass, Colo., Los Pinos River

near............................. 310

West Clear Creek, Ariz., discharge

 measurement of................... 490

West Mancos River near Mancos, Colo.... 330

West Paradox Creek near Bedrock, Colo.. 138 

near Paradox, Colo................... 137

Page 

White River (tributary to Green River),

near Meeker, Colo................ 265

near Watson, Utah................... 266

White River (tributary to Price River)

near Soldier Summit, Utah....... 275

White River (tributary to Black River)

at Fort Apache, Ariz...........445-446

at White River, Ariz................ 443

discharge measurements of........... 490

East Fork, at Fort Apache, Ariz..... 444

near McNary, Ariz................... 442

Whiterocks, Utah, Farm Creek near..... 256

Paradise Creek near................. 258

Whiterocks River near..............257,259

Whiterocks River above Paradise Creek,

near Whiterocks, Utah........... 257

near Whiterocks, Utah............... 259

Whitewater, Colo., Kahnah Creek near.. 129 

Whitewater Draw near Douglas, Ariz.... 485

Wickenburg, Ariz., Hassayampa River

near............................ 469

Williams Fork Reservoir near Parshall,

Colo............................ 38

Williams River below................ 39

Williams River below Williams Fork

Reservoir, Colo................. 39

near Leal, Colo..................... 35

near Parshall, Colo................. 37

South Fork, Colo., discharge measurements of........................ 486

Williams River basin, Colo., discharge

measurements in................. 486

gaging-station records in........... 35-39

Willow Creek (tributary to Blue River)

near Dillon, Colo............... 45

Willow Creek (tributary to Colorado

River) near Granby, Colo........ 26

Willow Creek (tributary to Eagle Creek 

Creek), near Double Circle Ranch, 

near Morenci, Ariz.............. 411

near Point of Pines, near Morenci,

Ariz...........................409-410

Willow Creek (tributary to Green

River) above diversions, near

Ouray, Utah..................... 267

near Ouray, Utah.................... 268

Willow Creek ditch, Utah,diversion by 341,342 

Willow Creek diversion. See Black River. 

Winkelman, Ariz., Gila River at....... 421

Winslow, Ariz., Chevelon Fork near...355,356 

Clear Creek near...................357,358

Winter Park, Colo., Fraser River near. 27 

Vasquez Creek near.................. 28

Wolf Creek above Rhodes Canyon, near

Hanna, Utah..................... 233

Woodruff, Ariz., Little Colorado River

at.............................. 353

Silver Creek near................... 352

Woodside , Utah, Price River at........ 279

Work, division of 

scope of

2 

1 

Wurtz'ditch, Colo., diversion by.... .340 ,342

Yampa River at Steamboat Springs, Colo. 203 

near Maybell, Colo.................. 205

Yellowstone Creek below Swift Creek,

near Altonah, Utah.............. 248

near Altonah, Utah^................. 249

York Canal, Ariz., diversion by....... 402

Young Spring, discharge measurements of 489 

Yuma, Ariz., Colorado River at........ 473

municipal supply, diversion for..... 479

Yuma Main Canal at.................. 479

Yuma Main Canal near................ 477

Yuma Main Canal wasteway at......... 478

Yuma Main Canal at siphon-drop power

plant, near Yuma, Ariz.......... 477

below Colorado River siphon, at

Yuma, Ariz...................... 479

Yuma Main Canal wasteway at Yuma, Ariz. 478 

Yuma project, Ariz.-Calif., return

surface flows from.............483-484

U. S GOVERNMENT PRINTING OFFICE : O 1953