Surface Water Supply 

of the United States 

1950

Part 9. Colorado River Basin

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

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1179

Prepared in cooperation with the States 

of Arizona, Colorado, New Mexico, 

Utah, and Wyoming, and other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1952
UNITED STATES DEPARTMENT OF THE INTERIOR 

Oscar L. Chapman, Secretary

GEOLOGICAL SURVEY 

W. E. Wrather, Director

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

Washington 25, D. C. - Price $1.00 (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

1 MI
CONTENTS

Page

Seope of work........................................................................ 1

Definition of terms.................................................................. 1

Explanation of data.................................................................. 2

Accuracy o'f field data and computed results........................................... 5

Publications.....................................................:................... 6

Records of discharge collected by agencies other than the Geological Survey.......... 12

Cooperation.......................................................................... 12

Division of work..................................................................... 12

Gaging-station records............................................................... 14

Colorado River Basin............................................................... 14

Colorado River main stem......................................................... 14

Colorado River near Grand Lake, Colo........................................... 14

Shadow Mountain Reservoir near Grand Lake, Colo................................ 15

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

Colorado River below Shadow Mountain Dam, Colo................................. 17

tjranby Reservoir near Granby, Colo............................................. 18

Colorado River near Granby, Colo............................................... 19

Colorado River at Hot Sulphur Springs, Colo.................................... 20

Colorado River near Dotsero, Colo.............................................. 21

Colorado River at Glenwood-Springs, Colo....................................... 22

Colorado River near Cameo, Colo................................................ 23

Colorado River near Cisco, Utah................................................ 24

Colorado River at Kite, Utah................................................... 25

Colorado River at Lees Ferry, Ariz............................................. 26

Transmountain diversions from Colorado River Basin above Lees Perry............ 27

Colorado River near Grand Canyon, Ariz......................................... 30

Lake Mead at Hoover Dam, Ariz.-Nev............................................. 31

Colorado River below Hoover Dam, Ariz.-Nev..................................... 33

Lake Mohave at Davis Dam, Ariz................................................. 34

Colorado River below Davis Dam, Ariz.-Nev...................................... 35

Colorado River at Needles, Calif............................................... 36

Colorado River near Topock, Ariz............................................... 37

Havasu Lake near Parker Dam, Ariz.-Calif....................................... 39

Colojrado River below Parker Dam, Ariz.-Calif................................... 41

Diversions between Parker Dam and Imperial Dam................................. 42

Diversion for Colorado River Indian Reservation near Parker, Ariz............ 42

Colorado River at Imperial Dam, Ariz.-Calif.................................... 43

Colorado River at Yuma, Ariz................................................... 44

Colorado River and Pilot Knob wasteway at Rockwood gate, Calif................. 46

Colorado River at international boundary, above Morelos Dam, near Andrade,

Calif........................................................................ 47

Diversions and return flows at and below Imperial Dam. ........................... 48

Gila Gravity Main Canal at Imperial Dam, Ariz.-Calif. ................... f ...... 48

All-American Canal near Imperial Dam, Ariz.-Calif.............................. 49

All-American Canal above Pilot Knob wasteway, Calif............................ 50

Yuma Main Canal at siphon-drop plant, near Yuma, Ariz.......................... 51

Yuma Main Canal below Colorado River siphon, at Yuma, Ariz..................... 52

Yuma Main Canal wasteway at Yuma, Ariz......................................... 53

Pilot Knob wasteway near Pilot Knob, Calif..................................... 54

North Gila Valley Canal at Laguna Dam, Ariz.-Calif............................. 55

Alamo Canal at Andrade, Calif.................................................. 56

Return surface flows from Yuma project, Ariz.-Calif............................ 57

Tributaries above Gunnison River................................................. 58

North Inlet at Grand Lake, Colo................................................ 58

East Inlet near Grand Lake, Colo................................................ 59

Little Columbine Creek above Shadow Mountain Reservoir, at Grand Lake, Colo.... 60

Columbine Creek above Granby Reservoir, near Grand Lake, Colo.................. 61

Arapaho Creek at Monarch Lake Outlet, Colo..................................... 62

Stillwater Creek above Granby Reservoir, near Grand Lake, Colo................. 63

Willow Creek near Granby, Colo................................................. 64

Praser River near Winter Park, Colo............................................ 65

Praser River at Granby, Colo. ................................................. 66

Vasquez Creek near Winter Park, Colo........................................... 67

St. Louis Creek near Praser, Colo.............................................. 68

Ranch Creek near Fraser, Colo.................................................. 69

Ranch Creek near Tabernash, Colo............................................... 70

Meadow Creek near Tabernash, Colo.............................................. 71

Williams River near Leal, Colo................................................. 72

Williams River near Parshall, Colo............................................. 73

Williams Pork Reservoir near Parshall, Colo.................................... 74

Williams River below Williams Pork Reservoir, Colo............................. 75

Keyser Creek near Leal, Colo................................................... 76

Troublesome Creek near Troublesome, Colo....................................... 77

Blue River at Billon, Colo..................................................... 78

Blue River above Green Mountain Reservoir, Colo................................ 79

Green Mountain Reservoir near Kremmling, Colo.................................. 80
VI CONTENTS

Gaging-station records Continued. 

Colorado River Basin Continued.

Tributaries above Gunnison River Continued. Page

Blue River below Green Mountain Reservoir, Colo................................ 81

Snake River at Dillon, Colo.................................................... 82

Tenmile Creek at Frisco, Colo.................................................. 83

Tenmile Creek at Dillon, Colo.................................................. 84

Straight Creek near Dillon, Colo............................................... 85

Willow Creek near Dillon, Colo................................................. 86

Rock Creek near Dillon, Colo................................................... 87

Boulder Creek near Dillon, Colo................................................ 88

Slate Creek near Dillon, Colo..............................'.................... 89

Black Creek above Green Mountain Reservoir, Colo............................... 90

Otter Creek above Green Mountain Reservoir, Colo............................... 91

Cataract Creek above Green Mountain- Reservoir, Colo............................ 92

Elliot Creek feeder canal to Green Mountain Reservoir, Colo.................... 93

Piney River below Biney Lake, near Minturn, Colo............................... 94

Piney River near State Bridge, Colo...........;................................ 95

Eagle River at Redcllff, Colo.................................................. 96

Eagle River below Gypsum, Colo................................................. 97

Turkey Creek at Redcliff, Colo................................................. 98

Homestake Creek at Gold Park, Colo............................................. 99

Homestake Creek near Redcliff, Colo............................................ 100

Gore Creek at upper station near Minturn, Colo................................. 101

Gore Creek near Minturn, Colo.................................................. 102

Black Gore Creek near Minturn, Colo............................................ 103

Roaring Pork at Aspen, Colo.................................................... 104

Roaring Pork at Glenwood Springs, Colo......................................... 105

Hunter Creek near Aspen, Colo.................................................. 106

Pryingpan Creek at Norrie, Colo................................................ 107

North Fork Pryingpan Creek near Norrie, Colo................................... 108

Lime Creek at Troutville, Colo................................................. 109

Lime Creek at Thomasville, Colo................................................ 109

Crystal River near Redstone, -Colo.............................................. 110

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

Parachute Creek at Grand Valley, Colo.......................................... 112

Plateau Creek near Collbran, Colo.............................................. 113

Plateau Creek near Cameo, Colo................................................. 114

Buzzard Creek near Collbran, Colo.............................................. 115

Big Creek at upper station, near Collbran, Colo................................ 116

Cottonwood Creek at upper station, near Molina, Colo........................... 117

Bull Creek, at upper station, near Molina, Colo................................. 118

Mesa Creek near Mesa, polo..................................................... 119

Gunnison River Basin............................................................. 120

Taylor Park Reservoir at Taylor Park, Colo..................................... 120

Taylor River below Taylor Park Reservoir, Colo................................. 121

Taylor River at Almont, Colo................................................... 122

Gunnison River near Gunnison, Colo............................................. 123

Gunnison River at lola, Colo................................................... 124

Gunnison River below Gunnison tunnel, Colo..................................... 125

Gunnison River near Grand Junction, Colo....................................... 126

East River near Crested Butte, Colo............................................ 127

East River at Almont, Colo..................................................... 128

Slate River near Crested Butte, Colo........................................... 129

Cement Creek near Crested Butte, Colo.......................................... 130

Ohio Creek near Baldwin, Colo.................................................. 131

Ohio Creek near Gunnison, Colo................................................. 132

Castle Creek near Baldwin, Colo................................................ 133

Tomichi Creek at Sargents, Colo................................................ 134

Tomichi Creek near Doyleville, Colo............................................ 135

Tomichi Creek at Parlin, Colo.................................................. 136

Tomichi Creek at Gunnison, Colo................................................ 137

Quartz Creek near Ohio, Colo................................................... 138

Cebolla Creek near Lake City, Colo............................................. 139

Cebolla Creek at Powderhorn, Colo.............................................. 140

Sapinero Creek at Sapinero, Colo............................................... 141

Lake Fork at Gateview, Colo.................................................... 142

Curecanti Creek near Sapinero, Colo............................................ 143

Cimarron Creek below Squaw Creek, at Cimarron, Colo............................ 144

Crystal Creek near Maher, Colo................................................. 145

Smith Pork near Crawford, Colo................................................. 146

Iron Creek near Crawford, Colo................................................. 147

East Muddy Creek near Bardine, Colo....... ...................................... 148

Muddy Creek at Bardine, Colo................................................... 149

North Pork Gunnison River near Somerset, Colo.................................. 150

Leroux Creek near dedaredge, Colo.............................................. 151

Currant Creek near Cedaredge , Colo.....................'........................ 152

Surface Creek near Cedaredge, Colo............................................. 153

Surface Creek at Cedaredge, Colo................................................ 154

Surface Creek at Eckert, Colo................................................'.. 155

Ward Creek below Riser Creek, near Cedaredge, Colo............................. 156

Uncompahgre River at Colona , Colo.............................................. 157

Uncompahgre River at Delta, Colo............................................... 158

Red Mountain Creek near Ironton, Colo.......................................... 159

East Fork Dallas Creek near Ridgway, Colo...................................... 160

Roubideau Creek at mouth, near Delta, Colo..................................... 161

Kahnah Creek near Whitewater, Colo............................................. 162
	VII

Gaging-station records--iContinued.

Colorado River Basin Continued. Page

Dolores River Basin............................................................... 163

Dolores River at Dolores, Colo ............................................... ,\. 163

Dolores River near McPhee, Colo................................................. 164

Dolores River at Gateway, Colo...........................,............."......... 165

Twomile Creek near La Sal, Utah................................................. 166

West Paradox Creek near Paradox, Colo............................................ 167

West Paradox Creek near Bedrock, Colo........................................... 168

Buckeye Reservoir Outlet near Paradox, Colo..................................... 169

San Miguel River near Placerville, Colo......................................... 170

San Miguel River at Naturita, Colo.............................................. 171

Fall Creek near Pall Creek, Colo................................................ 172

Beaver Creek near Norwood, Colo................................................. 173

Horsefly Creek near Sams, Colo.................................................. 174

Cottonwood Creek near Nucla, Colo............................................... 175

Naturita Creek near Norwood, Colo............................................... 176

Tabeguache Creek near Nucla, Colo............................................... 177

Taylor Creek near Gateway, Colo..........:...................................... 178

Roc Creek near Uranium, Colo.................................................... 179

Deep Creek near Paradox, Colo................................................... 180

Geyser Creek near Paradox, Colo................................................. 180

Indian Creek Easin................................................................ 181

Indian Creek near Monticello, Utah.............................................. 181

Indian Creek above Cottonwood Creek, near Monticello, Utah...................... 182

Cottonwood Creek near Monticello, Utah.......................................... 183

Green River Basin................................................................. 184

Green River at Warren Bridge, near Daniel, Wyo.................................. 184

Green River near Fontenelle, Wyo................................................ 185

Green River near Linwood, Utah.................................................. 186

Green River near Jensen, Utah................................................... 187

Green River near Ouray, Utah.................................................... 188

Green River at Greeri River, Utah................................................ 189

Beaver Creek near Daniel, Wyo................................................... 190

Hore* Creek near Daniel, Wyo.................................................... 191

Cottonwood Creek near Daniel, Wyo............................................... 192

New Pork River below New Pork Lake, near Cora, Wyo.............................. 193

New Pork River near Boulder, Wyo................................................ 194

Pine Creek at'Pinedale, Wyo..................................................... 195

Pole Creek below Little Half Moon Lake, near Pinedale, Wyo...................... 196

Fall Creek near Pinedale, Wyo................................................... 197

Boulder Creek below Boulder Lake, near Boultor, Wyo............................. 198

East Pork near Big Sandy, Wyo................................................... 199

Silver Creek near Big Sandy, Wyo................................................ 200

North Piney Creek near Mason, Wyo............................................... 201

Middle Piney Creek below South Pork, near Big Piney, Wyo........................ 202

Pontenelle Creek near Pontenelle, Wyo............"............................... 203

Big Sandy Creek at Leckie Ranch, near Big Sandy, Wyo............................ 204

Little Sandy Creek near Elkhorn, Wyo............................................ 205

Blacks Pork near Millburne, Wyo................................................. 206

Blacks Pork near Urie, Wyo...................................................... 207

Blacks Pork near Lyman, Wyo..................................................... 208

Blacks Pork near Green River, Wyo............................................... 209

East Pork of Smith Pork near Robertson, Wyo..................................... £HO

Smith Pork at Mountainview, Wyo................................................. 211

West Pork of Smith Pork near Robertson, Wyo..................................... 212

Hams Pork near Frontier, Wyo.................................................... 213

Henrys Pork near Lonetree, Wyo.................................................. 214

Henrys Pork near Burntfork, Wyo................................................. 215

Henrys Fork at Linwood, Utah.................................................... 216

Middle Pork Beaver Creek near Lonetree, Wyo..................................... 217

East Pork Beaver Creek near Lonetree, Wyo....................................... 218

West Pork Beaver Creek near Lonetree, Wyo....................................... 219

Burnt Pork near Burntfork, Wyo.................................................. 220

Sheep Creek near Manila, Utah..................................:................ 221

Sheep Creek at mouth, near Manila, Utah......................................... 222

Sheep Creek upper canal near Manila, Utah....................................... 223

Sheep Creek lower canal near Manila, Utah....................................... 224

Garter Creek near Manila, Utah................................................... 225

Carter Creek at mouth, near Manila, Utah......................................... 226

Yampa River at Steamboat Springs, Colo.......................................... 227

Yampa River near Maybell, Colo................................................... 228

Elk River at Clark, Colo............................................/........... 229

Little Snake River near Dixon, Wyo.............................................. 230

Little Snake River near Lily, Colo.............................................. 231

Battle Creek near Slater, Colo.................................................. 232

Slater Pork near Slater, Colo................................................... 233

Savery Creek near Savery, Wyo................................................... 234

Brush Creek above cave, near Vernal, Utah....................................... 235

Brush Creek near Vernal, Utah................................................... '236

Brush Creek near Jensen, Utah................................................... 237

Oaks Park Canal near Vernal, Utah............................................... 238

Little Brush Creek below East Park Reservoir near Vernal, Utah.................. 239

Little Brush Creek near Vernal, Utah............................................ 240

Ashley Creek below Trout Creek, near Vernal, Utah............................... 241

Ashley Creek near Vernal, Utah.................................................. 242

Ashley Creek at Sign of the Maine, near Vernal, Utah............................ 243
VIII CONTENTS.

Gaging-station records Continued. 

Colorado River Basin Continued.

Green River Basin Continued. Page

Ashley Creek near Jensen, Utah................................................... 244

South Pork Ashley Creek near Vernal, Utah....................................... 245

Dry Pork above sinks, near Dry Pork, Utah....................................... 246

North Fork of Dry Pork near Dry Fork, Utah...................................... 247

East Fork of Dry Pork near Dry Fork, Utah....................................... 248

East Fork of Dry Pork at mouth, near Dry Fork, Utah............................. 249

Duchesne River at Provo River Trail, near Hanna, Utah........................... 250

Duchesne River near Hanna, Utah................................................. 251

Duchesne River near Tabiona, Utah............................................... 252

Duchesne River at Duchesne, Utah................................................ 253

Duchesne River at Myton, Utah................................................... 254

Duchesne River near Randlett, Utah. .............................................. 255

Hades Creek near Hanna, Utah.................................................... 256

West Pork Duchesne River below Dry Hollow near Hanna, Utah...................... 257

West Fork Duchesne River near Hanna, Utah....................................... 258

Wolf Creek above Rhodes Canyon, near Hanna, Utah................................ 259

Rock Creek near Hanna, Utah..................................................... 260

Rock Creek near Mountain Home, Utah............................................. 261

Strawberry Reservoir near Soldier Springs, Utah................................. 262

Strawberry River near Soldier Springs, Utah..................................... 263

Strawberry River at Duchesne, Utah.............................................. 264

Currant Creek below Red Lodge Hollow, near Pruitland, Utah...................... 265

Currant Creek near Pruitland, Utah.............................................. 266

Water Hollow near Pruitland, Utah............................................... 267

Lake Pork above Moon Lake, near Mountain Home, Utah............................. 268

Moon Lake Reservoir near -Mountain Home, Utah.................................... 269

Lake Pork below Moon Lake, near Mountain Home, Utah............................. 270

Lake Pork near Upalco, Utah..................................................... 271

Brown Duck Creek near Mountain Home, Utah....................................... 272

Yellowstone Creek below Swift Creek, near Altonah, Utah......................... 273

Yellowstone Creek near Altonah, Utah............................................ 274

Uinta River above Clover Creek, near Neola, Utah................................ 275

Uinta River near Neola, Utah.................................................... 276

Uinta River at Port -Duchesne, Utah.............................................. 277

Farm Creek near Whiterocks, Utah................................................ 278

Whiterocks River above Paradise Creek, near Whiterocks, Utah.................... 279

Whiterocks River near Whiterocks, Utah.......................................... 280

Paradise Creek near Whiterocks, Utah............................................ 281

Deep Creek near Lapoint, Utah................................................... 282

White River near Meeker, Colo................................................... 283

White River near Watson, Utah................................................... 284

Willow Creek near Ouray, Utah................................................... 285

Minnie Maud Creek at Nutter Ranc-h, near Myton, Utah............................. 286

Price River above Scofield Reservoir, near Scofield, Utah....................... 287

Scofield Reservoir near Scofield, Utah.......................................... 288

 Price River near Scofield, Utah................................................. 289

Price River near Heiner, Utah................................................... 290

Price River at Woodside, Utah................................................... 291

Gooseberry Creek near Scofield, Utah............................................ 292

White River near Soldier Summit, Utah........................................... 293

 Browns Wash near Green River, Utah.............................................. 294

Huntington Creek near Huntington, Utah.......................................... 295

San Rafael River near Castle Dale, Utah......................................... 296

San Rafael River near Green River, Utah......................................... 297

Cottonwood Creek near Orangeville, Utah......................................... 298

Cottonwood Creek near Castle Dale, Utah......................................... 299

Perron Creek "(upper station) near Ferron, Utah.................................. 300

Perron Creek near Castle Dale, Utah............................................. 301

Dirty Devil River Basin........................................................... 302

Premont River near Premont, Utah................................................ 302

Premont River near Bicknell, Utah............................................... 303

Escalante River Basin............................................................. 304

Escalante River near Escalante, Utah............................................ 304

San Juan River Basin.............................................................. 305

San Juan River near Pagosa Springs, Colo........................................ 305

San Juan River at Pagosa Springs, Colo.......................................... 306

San Juan River at Rosa, N. Mex.................................................. 307

San Juan River near Blanco, N. Mex.............................................. 308

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

San Juan River at Ship Rock, N. Mex............................................. 310

San Juan River near Bluff, Utah................................................. 311

West Pork San Juan River above Borns Lake, near Pagosa Springs, Colo............ 312

West Pork San Juan River near Pagosa Springs, Colo...............'............... 313

Rio Blanco near Pagosa Springs, Colo............................................ 314

Rito Blanco near Pagosa Springs, Colo........................................... 315

Navajo River at Banded Peak Ranch, near Chromo, Colo............................ 316

Navajo River at Edith, Colo..................................................... 317

Little Navajo River at Chromo, Colo............................................. 318

Piedra River at Bridge ranger station, near Pagosa Springs, Colo................ 319

Piedra River near Piedra, Colo.................................................. 320

Los Pinos River below Snowslide Canyon, near Weminuche Pass, Colo............... 321.

Vallecito Reservoir near Bayfield, Colo......................................... 322

Los Pinos River near Bayfield, Colo. ............................................ 323

Los Pinos River at Ignacio, Colo................................................ 324
CONTENTS IX

Gaging-station recjjrds Continued. 

Colorado River Basin Continued.

San Juan River Basin Continued. Page

Animas River at Howardsville, Colo.............................................. 325

Animas River above Tacoma, Colo................................................. 326

Animas River at Durango, Colo................................................... 327

Animas River near Cedar Hill, N. Hex............................................ 328

Animas River at Parmington, N. Hex.............................................. 329

Hermosa Creek near Hermosa, Colo................................................ 330

Florida River near Durango, Colo................................................ 331

La Plata River at Hesperus, Colo................................................ 332

La Plata River at Colorado-New Mexico State line................................ 333

La Plata River near Farmington, N. Hex.......................................... 334

Cherry Creek near Red Mesa, Colo................................................ 335

West Maneos River near Mancos, Colo............................................. 336

East Mancos River near Mancos, Colo............................................. 337

Middle Mancos River near Mancos, Colo............................................ 338

Paria River Basin................................................................. 339

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

Little Colorado River Basin....................................................... 340

Little Colorado River above Lyman Reservoir, near St. Johns, Ariz............... 340

Lyman Reservoir near St. Johns, Ariz............................................ 341

Little Colorado River below Lyman Reservoir, near St. Johns, Ariz............... 342

Little Colorado River above Zuni River, near Hunt, Ariz......................... 343

Little Colorado River near Hunt, Ariz........................................... 344

Little Colorado River at Woodruff, Ariz......................................... 345

little Colorado River at Holbrook, Ariz......................................... 346

Little Colorado River near Cameron, Ariz......................................... 347

Lyman Canal below Lyman Reservoir, near St. Johns, Ariz......................... 348

Silver Creek near Shumway, Ariz................................................. 349

Silver Creek near Woodruff, Ariz................................................ 350

Show Low Creek at Show Low, Ariz................................................. 351

Chevelon Fork below Wildcat Canyon, near Winslow, Ariz.......................... 352

Chevelon Fork near Winslow, Ariz................................................ 353

Clear Creek below Willow Creek, near Winslow, Ariz.............................. 354

Clear Creek near Winslow, Ariz.................................................. 355

Moenkopi Wash near Tuba, Ariz................................................... 356

Bright Angel Creek Basin.......................................................... 357

Bright Angel Creek near Grand Canyon, Ariz....................................'.. 357

Virgin River Basin................................................................ 358

Virgin River at Virgin, Utah.................................................... 358

Virgin River at Littlefield, Ariz............................................... 359

North Fork Virgin River near Springdale, Utah................................... 360

Santa Clara River near Central, Utah............................................ 361

Santa Clara River above Winsor Dank, near Santa Clara, Utah...................... 362

Muddy River near O'verton, Nev................................................... 363

Meadow Valley Wash near Panaca, Nev............................................. 364

Bill Williams River Basin......................................................... 365

Bill Williams River near Alamo, Ariz............................................ 365

Santa Maria River near Alamo, Ariz.............................................. 366

Gila River Basin................................................................... 367

Gila River near Gila, N. Mex....................................................' 367

Gila River near Cliff, N. Mex................................................... 368

Gila River near Red Rock, N. Mex................................................ 369

Gila River below Blue Creek, near Virden, N. Mex................................ 370

Diversions from Gila River in Duncan Valley, N. Mex.-Ariz....................... 371

Gila River near Clifton, Ariz................................................... 372

Gila River near Solomon, Ariz................................................... 373

Diversions from Gila River in Safford Valley, Ariz..............'................ 375

Gila River at Calva, Ariz....................................................... 376

San Carlos Reservoir at Coolidge Dam, Ariz...................................... 377

Gila River below Coolidge Dam, Ariz............................................. 378

Gila River at Winkelman, Ariz................................................... 379

Gila River at Kelvin, Ariz...................................................... 380

Gila River at Ashurst-Hayden Dam, near Florence, Ariz........................... 381

Gila River near Laveen, Ariz.................................................... 382

Gila River below Gillespie Dam, Ariz............................................ 383

Gila River near Dome, Ariz...................................................... 385

Sunset Canal near Virden, N. Mex................................................ 385

Sunset Canal above New Mexico-Arizona State line, near Virden, N. Mex........... 386

Sunset Canal wasteway near Virden, N. Mex....................................... 387

Moddle Canal near Virden, N. Mex................................................ 388

Moddle Canal at New Mexico-Arizona State line, near Virden, N. Mex.............. 389

San Francisco River near Glenwood, N. Mex....................................... 390

San Francisco River at Clifton, Ariz............................................ 391

Eagle Creek near Double Circle Ranch, near Morenci, Ariz........................ 392

Eagle Creek above pumping plant, near Morenci, Ariz.............................. 393

Willow Creek diversion from Black River, near Morenci, Ariz..................... 394

Willow Creek near Point of Pines, near Morenci, Ariz............................ 395

Willow Creek near Double Circle Ranch, near Morenci, Ariz....................... 396

San Simon Creek near San Simon, Ariz............................................ 397

San Simon Creek near Solomon, Ariz.............................................. 399

San Carlos River near Peridot, Ariz............................................. 400

San Pedro River at Palominas, Ariz.............................................. 401

San Pedro River at Charleston, Ariz............................................. 402

San Pedro River near Redington, Ariz............................................ 403

Queen Creek at Whitlow dam site, near Superior, Ariz............................ 404
X CONTENTS

Gaging-station records Continued. 

Colorado River Basin Continued.

Gila River Basin Continued. Page

Santa Cruz River near Lochiel, Ariz............................................. 406

Santa Cruz River near Nogales, Ariz............................................. 407

Santa Cruz River at Tucson, Ariz................................................ 408

Santa Cruz River at Cortaro, Ariz............................................... 409

Santa Cruz River near Laveen, Ariz.............................................. 410

Sonoita Creek near Patagonia, Ariz.............................................. 411

Tucson Arroyo at Vine Avenue, Tucson, Aria...................................... 412

Rillito Creek near Tucson, Ariz................................................. 413

Sablno Creek near Tucson, Ariz.................................................. 414

Salt River near Chrysotile, Ariz................................................ 415

Salt River near Roosevelt, Ariz................................................. 416

Reservoir system on Salt River at and below Roosevelt Dam, Ariz................. 417

Salt River below Stewart Mountain Dam, Ariz..................................... 418

White River near McNary, Ariz................................................... 419

Tonto Creek above Gun Creek, near Roosevelt, Ariz............................... 420

Verde River below Tangle Creek, above Horseshoe Dam, Ariz........................ 421

 Reservoir system on Verde River at and below Horseshoe Dam, Ariz................ 422

Verde River below Bartlett Dam, Ariz............................................ 423

Diversion for city of Phoenix from Verde River at McDowell, Ariz................ 424

Diversions from Salt River at Granite Reef Dam, Ariz............................ 424

Oak Creek near Cornville, Ariz.................................................. 425

Agua Pria River near Mayer, Ariz................................................ 426

Agua Pria River at Lake Pleasant Dam, Ariz...................................... 427

Lake Pleasant at Lake Pleasant Dam, Ariz........................................ 428

Hassayampa River at Box dam site, near Wickenburg, Ariz......................... 429

Sulphur Spring Valley............................................................... 430

Whitewater Draw Basin.............................................................. 430

Whitewater Draw near Douglas, Ariz.............................................. 430

Miscellaneous discharge measurements.................................................. 431

Index................................................................................. 435

ILLUSTRATION

Page 

Figure 1. Gaging-station structures: A, Colorado River at Lees Perry, Ariz.; B,

Crystal River near Redstone', Colo........................................ 3

2. Gaging stations in viQinity of Yutna, Ariz.................................. 45
SURFACE WATER SUPPLY OP THE COLORADO RIVER BASIN, 1950

SCOPE OF WORK

This volume is one of a series of 14 reports presenting results of measurements of 

stage and flow made on streams, lakes, and reservoirs in the United States during the 

water year ending September 30, 1950. The work was begun in 1888 in connection with 

special studies relating to irrigation. Measurements of the flow of streams and of the 

stage and contents of lakes and reservoirs have been made at about 12,060 gaging stations 

in the 48 States and also at many in the Territories of Alaska and Hawaii. On September 

30, 1950, 6,540 gaging stations, including those in Hawaii and Alaska were being maintained by the Geological Survey and cooperating organizations. Miscellaneous discharge 

measurements were made during the water year at many other points.

In the execution of the work many State and private organizations have cooperated, 

either by furnishing data or'by assisting in collecting data. Cooperation of the first 

kind is acknowedged in connection with the description of each station affected; cooperation of the second kind is acknowledged, under the heading "Cooperation," in the introductory matter that precedes the gaging-station records in each volume. In the present 

volume, the section on cooperation of the second kind appears on page 12.

DEFINITION OF TERMS

The units in which stream-flow data are presented in this report and other terms used 

herein are defined as follows:

"Second-feet" is an abbreviation for "cubic feet per second." A second-foot 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.

"Second-feet per square mile" is the average number of cubic feet of water flowing per 

second from each square mile of area drained, on the assumption that the runoff is distributed uniformly both as regards 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. It is used

i 

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

An "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 connection 

with storage for irrigation.

"Seaond-foot-day" is the volume of water represented by a flow of 1 second-foot 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 an abbreviation for the term "relation between gage height 

and discharge."

"Control" is a term used to designate a feature downstream from the gage that determines the stage-discharge relation at the gage. This feature may be a natural section, 

a reach of the channel, or an artificial structure.

''Contents" is a term applied to the volume of water in a reservoir. Unless otherwise 

indicated, it is computed on the basis of a level pool and does not include bank storage.

1
2 SURFACE WATER SUPPLY, 1950, PART 9

"Drainage area" of a stream at a specified location is that area, measured in a horizontal plane, which is enclosed by a topographic divide such that direct surface runoff from 

precipitation normally would drain by gravity into the river basin above the specified 

point. Figures of drainage area given herein include all closed basins or non-contributing areas within the area unless otherwise noted.

EXPLANATION OF DATA

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

of discharge, and general information used to supplement the records of stage and discharge 

measurements 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 con-, 

tinuous record of the fluctuations. Measurements of discharge are made with a current 

meter by the general methods outlined in standard textbooks on the measurement of river 

discharge. Typical structures in use at gaging stations are shown in figure 1.

Rating tables giving the discharge for any stage are prepared from the discharge measurements . 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 the 

gage heights to the rating tables. At times the stage-discharge relation for a station 

may be temporarily changed by the presence of aquatic growth or debris on the control. 

For such times the daily mean discharge is computed by what is essentially the "shiftingcontrol" method, described above.

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

reservoirs, tributary streams, or other sources, which necessitates ths use of the "slope 

method," in which the slope or fall in a reach of the stream is a factor in the determination of 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 stage-discharge relation is affected by changing stage, and for them 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 Unite;! States and at some in the 

mountainous regions of other parts the stage-discharge relation is affected by ice during 

the winter, which makes it 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 stations in the same or nearby basins. For those 

stations at which the stage-discharge relation j,s affected by ice, the days included in 

the periods of ice effect either are indicated in the table by symbols referring to a 

footnote that states this fact or are given in a general note following the table. The 

days on which discharge measurements were made during or between periods of ice effect, 

shortly before the first period, or shortly after the last period are similarly indicated 

by a footnote.

For most of the Raging stations on streams in the area covered by this report the data 

presented comprise a description of the station, a table showing the daily discharge of
EXPLANATION OF DATA

A. COLORADO RIVER AT LEES FERRY, ARIZ. 

Note landing tower.

B. CRYSTAL RIVER NEAR REDSTONE, COLO.

FIGURE 1. GAGING-STATION STRUCTURES.
4 SURFACE WATER SUPPLY, 1950, PART 9

the stream, and a table of monthly and yearly discharge and runoff. Skeleton rating 

tables are published for all stations except those at which the dally discharge for the 

greater part of the year was determined by the shifting-control method, the slope method, 

or other special methods.

The description of the station gives the type of gage, location, drainage area, records 

available, average discharge, extremes of discharge, general remarks, and notations of revisions of previously published record. The location of the gaging station and the drainage area are obtained from the most accurate maps available. Under "Average discharge" Is 

given the average discharge for the number of years Indicated. It Is not given for stations having less than 10 complete years of.record or for stations where changes In water 

development during the periqd 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 dally 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 crest. Information pertaining to the accuracy of 

the records and conditions which affect the natural flow at the gaging station is given 

under "Remarks."

For some stations previously published records have been found to be in error on the 

basis of data or information obtained subsequently. 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 station description of all stations for which revised records have been 

published. Listed therein are all the reports In which revisions appear, 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 years, water years are indicated by 

only 1 year, for instance, 1933 stands for the water year October 1, 1938, to September 30, 

1933. If there were no daily, monthly, or annual figures of discharge involved in the 

revision, that fact is brought out by notations after the year dates as follows: (M) means 

that only the instantaneous maximum discharge was revised; (m) that only the instantaneous 

minimum was revised; and (P) that only peak discharges were revised. If the drainage area 

has been revised, the report in which the revised figure was first published is given. It 

should be noted that for all stations for which second-feet 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 second-feet 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.

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

sudden or rapid fluctuation, the 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 

dally 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
ACCURACY OF FIELD DATA AND COMPUTED RESULTS 5

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

or 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 monthly discharge the column headed "Second-foot-days" gives the sum 

for each month'of the figures given in the table of daily discharge. The column headed 

"Maximum" gives the maximum daily discharge, not the momentary discharge when the water 

surface was at crest stage. Likewise, in the column headed "Minimum" the quantity given 

is the minimum daily discharge. The column headed "Mean" gives the average flow in cubic 

feet per second during the month.

Peak discharges with the times of their occurrence are listed below the table of monthly 

discharge for most stations. All independent peaks above the selected base are given. The 

base discharge, which is given in parentheses, is seleetea 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.

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 a station are published 

but is omitted from succeeding reports.

ACCURACY OF FIELD DATA AND COMPUTED RESULTS

The accuracy of stream-flow data depends primarily on (1) the permanency 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 flow, and interpretation of 

records.

The station description gives a statement in regard to the general 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 accurate than the daily records.

Yield at some stations as Indicated by monthly means may vary widely from natural yield, 

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

due to artificial causes, or other factors. For such stations figures of "second-feet per 

square mile" and "runoff in inches" are not published unless storage or diversion records 

are included indicating the extent of the regulation or diversion or unless satisfactory 

adjustments can be made for changes in contents or reservoirs or for other changes incident 

to use and control. Evaporation from a reservoir is not included in the adjustments for 

changes in resiervoir contents, unless its inclusion is indicated. Even at those stations 

where adjustments are made, in some instances large errors in computed yields may occur 

when relatively large negative adjustments are applied or when evaporation is large in 

comparison with the observed discharge. Figures of second-feet per square mile and runoff 

in inches are also omitted if the drainage area includes large noncontributing areas or if 

the average annual rainfall over the drainage area is less than 20 inches.
6 SURFACE WATER SUPPLY, 1950 , 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 show the water supply available for further development, as prior appropriations below 

the station must first be satisfied.

The table of monthly discharge presents in summary the distribution of the flow past the 

station. The table of daily discharge affords opportunity for more detailed studies of the 

variation in flow. As further observations in each succeeding year may be expected to 

throw new light on data previously published, it should be borne in mind that such data are 

subject to revision in succeeding water-supply papers.

PUBLICATIONS

The results of stream-flow measurements are now published annually in 14 parts, each 

part covering an area whose boundaries coincide with natural drainage features as indicated 

below:

Part 1. North Atlantic slope basins "(St. John River to York River).

2. South Atlantic slope and eastern Gulf of Mexico basins (James River to Mississippi 

	River).

3. Ohio River Basin.

4. St. Lawrence River Basin.

5. Hudson Bay and upper Mississippi River Basins.

6. Missouri River Basin.

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 obtained or consulted as explained below.

1. Copies may be purchased at nominal cost from the Superintendent of Documents, Government Printing Office, Washington, D. C., who will, on application, furnish lists giving 

prices.

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 as follows:

East of the Mississippi River:

Albany, N. Y., 526 Federal Building.

Asheville, N. C., 220 Post Office Building.

Atlanta, Ga., 644 Peachtree Seventh.

Augusta, Maine, 420 Statehouse.

Baton Rouge, La., 850 North 5th Street.

Boston, Mass., 939 Post Office Building.

Champaign, 111., 605 South Neil Street.

Charleston, W. Va., 408 Union Building.

Charlottesville, Va., Cabell Hall, University of Virginia.

Chattanooga, Term., 442 Post Office Building.

College Park, Md., 106 Engineering Building, University of Maryland.

Columbia, S. C., 207 Creason Building.

Columbus, Ohio, 1509 Hess Street.

Harrisburg, Pa., 490 Education Building.

Hartford, Conn., 203 Federal Building.

Indianapolis, Ind., 311 West Washington Street.

Jackson, Miss., Room I, Fidelity Building.

Knoxville, Term., 337 Post Office Building.

Lansing, Mich., 611 Capitol Saving & Loan Building.

Louisville, Ky., 531 Federal Building.

Madison, Wis., 666 State Office Building.

Montgomery, Ala., 507 Post Office Building.

New Philadelphia, Ohio, Muskingum Watershed Conservancy District Building.

Ocala, Fla., Building 211, Camp Roosevelt.

Pittsburgh, Pa., 515 Plaza Building.

Raleigh, N. C., 908 Capitol Club Building.

St. Paul, Minn., 1427 New Post Office Building.

Trenton, N. J., 228 Federal Building.

Washington, D. C., General Services Administration Building.
PUBLICATIONS 7

West of the Mississippi River:

Austin, Tex., 302 West Fifteenth Street. 

'Bismarck, N. Dak., 7 Eltinge Building. 

Boise, Idaho, 429 Federal Building. 

Denver, Colo., Federal Center, 

Fort Smith, Ark., 6 Post.Office Building. 

Helena, Mont., 408 Federal Building. 

Honolulu, Hawaii, 225 Federal Building. 

Idaho Falls, Idaho, 204 Federal Building.

Iowa City, Iowa, 508 Hydraulic Laboratory, University of Iowa. 

Juneau, Alaska, Sub Port. 

Lincoln, Nebr., 510 Rudge-Guenzel Building.

Los Angeles, Calif., 429-F United States Post Office and Courthouse. 

Oklahoma City, Okla., 405 Post Office Building. 

Pierre, S. Dak., 207 Federal Building. 

Portland, Oreg., 606 Post Office Building. 

Rolla, Mo., 211 Rarasey Building. 

St. Louis, Mo., 1004 New Federal Building. 

Salt Lake City, Utah, 303 Federal Building. 

San Francisco, Calif., 541 Federal Office Building. 

Santa Fe, N. Mex., 228 United States Courthouse. 

Tacoma, Wash., 207 Federal Building. 

Topeka, Kans., 305 Federal Building. 

Tucson, Ariz., 210 Post Office Building.

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

Geological Survey, Washington, D. C.

Prior to publication, records of discharge in provisional form for individual stations 

may usually be obtained from the district offices listed above.

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.

Stream-flow data for the years 1884-19O1, In reports of the Geological Survey

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

Report

10th A, pt. 

llth A, pt. 

12th A, pt. 

13th A, pt. 

14th A, pt.

16th A, pt.

W 11

18th A, pt.

W 16.......

19th A, pt.

W 28.........

2 

2 

2 

3 

2

2

4

4

2Oth A, pt. 4 

W 35 to 39... 

21st A, pt. 4 

W 47 to 52... 

22d A, pt. 4. 

W 65, 66..... 

W 75.........

Character of data

Descriptive Information only.

Descriptive Information only. 

Descriptions, measurements, gage heights, ratings, and 

monthly discharge.

Descriptions, measurements ratings, and monthly discharge... 

Descriptions, measurements and gage heights of streams east 

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

Descriptions, measurements and gage heights of stream west 

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

Descriptions, measurements, ratings, and monthly discharge. 

Measurements, ratings, and gage heights of streams east of 

the Mississippi River, and Missouri River and tributaries. 

Measurements, ratings, and gage heights of str ferns west of 

the Mississippi River, except Missouri River and tributaries.

Year

1884 to September 1890. 

1884 to June 30, 1891. 

1884-92. 

1S88-93. 

1893-94.

1895.

1896. 

1895-96. 

1897.

1897.

1897. 

1898.

1898.

1898. 

1899. 

1899. 

1900. 

1900. 

1901. 

1901.

Papers on surface water supply containing records from 1899 to date, grouped by years 

and drainage basins, are listed by number on page 8. The data for any particular gaging 

station will, in general, be found in the reports covering the years during which the 

station was maintained. For example, the data for 1910 to 1920 for any station in the 

area covered by part 3 are published in Water-Supply Paper-s 283, 303, 323, 353, 403, 433, 

453, 473, and 503, which contain records for the Ohio River Basin for those years.

207364 0-52-2
Numbers of water-supply papers containing results of stream measurements. 

Year

1899 a. .................

1902

1905. ...................

1904. ...................

1909.... ................

1910. ...................

1914. ...................

131F........... .........

1919-20... ..............

1921. ...................

1925.............. ......

1926. ...................

1950.... ................

1931.. ..................

1955. ...................

1936. ...................

1940. ...................

1941 ....................

1945. ...................

isie. ...................

1949. ...................

1950...... ..............

1 "" " "-" 35 

47, h48 

65, 75 

82 

97

0165, p!66, q!67 

0201, p202, q205 

241 

261

281 

501 

521 

351 

381

431 

451 

471 

501

521 

541 

561 

581 

601

641 

661 

681 

696

711 

726 

741 

756 

781

8O1 

821 

851 

871 

891

951 

971 

1001 

1031

1051 

1081

1111 

1141 

1171

b35, SB48

65, 75 

b82, 83 

b97, 98

(J167, 168 

q205, 204 

242 

262

282 

502 

522 

552 

382 4732-

452 

452 

472 

502

522 

542 

562 

582 

602

642 

662 

682 

697

712 

727 

742 

757 

782

802 

822 

852 

872 

892

952 

972 

1002 

1052

1052 

1082

1112 

1142 

1172

5

36

48, 149 

65, 75 

85 

98

169 

205 

245 

265

283

505 

523 

355 

585

403 

455 

455 

 473 

505

523 

545 

565 

583 

603

645 

665 

685 

698

713 

728 

743 

758 

785

S03 

823 

853 

875 

895

953 

973 

1005 

1055

1053 

1085 

1115 

1143 

1173

4

33 

49 

65, 75 

m82, 83 

97

170 

206 

244 

264

284 

504 

524 

354 

384

404 

434 

454 

474 

504

524 

544 

564 

584 

604

644 

664 

684 

699

714 

729 

744 

759 

784

8O4 

824 

854 

874 

894

954 

974 

1004 

1054

1O54 

1084 1114" 

1144 

1174

5

36 

49 

k65, 66, 75 

k85, 85 

k98, 99, nlOO

171 

207 

245 

265

285 

305 

325 

355 

385

405 

435 

455 

475 

505

525 

545 

565 

585 

605

625 

645 

665 

685 

700

715 

750 

745 

760 

785

8O5 

825 

855 

875 

895

925 

955 

975 

1005 

1055

1055 

1085 

1115 

1145 

1175

1 ""cSS, 37 

49, J50 

66, 75 

84 

99

172 

208 

246 

266

286 

306 

326 

356 

586

1 406

456 

456 

476 

506

526 

546 

566 

586 

606

626 

646 

666 

686 

701

716 

751 

746 

761 

786

806 

826 

856 

876 

896

926 

956 

976 

1006 

1056

1056 

1086 

1116 

1146 

1176

7

37 

50 

k65, 66, 75 

k83, 84 

k98, 99

k!69, 173 

k205, 209 

247 

267

Z87 

307 

527 

357 

587 TOT

457 

457 

477 

507

527 

547 

567 

587 

607

627 

647 

667 

687 

702

717 

752 

747 

762 

787

807 

827 

857 

877 

897

927 

957 

977 

1007 

1037

ids?

1087 

1117 

1147 

1177

a Rating tables and Index to WSP 55-59 e Mojave River only. J Loup, Platte, and 

contained In WSP 39. Monthly discharge f 

for 1899 In 21st Annual Report, part 4. g

b James River only.

c Oallatln River.

d Oreen and Ounnlson Rivers and Colorado h 

River above Ounnlson River. 1

Kings and Kern Rivers and south Pacific slope

Rating tables and Index to WSP 47-52 

contained In WSP.52. Monthly discharge 

for 1900 In 22d Annual Report, part 4.

Schuylklll River to James River.

Scloto River.

tributaries below 

k Tributaries of Mis

m Lake Ontario and t

Lawrence River pr

n Hudson Bay only, 

o New England rivers 
PUBLICATIONS

The records at most of the stations discussed in these reports extend over a series of 

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 listed appearing in the same 

relative order as the streams and gaging stations in the body of the report. An index of 

the records obtained prior to 1904 has been published in Water-Supply Paper 119.

Each of the reports on surface water supply for the year 1939, issued as Water-Supply 

Papers 871 to 884 (see table on p. 8), contains, for the area covered by that report, a 

sunniary of yearly discharge at gaging stations at which 10 or more complete years of record 

have been collected. These summaries are available also as separate reprints.

Reports 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 have been revised), as well as some records not contained in the annual 

series of water-supply papers. The following table gives the numbers and titles of these 

reports, arranged alphabetically, some by States and some by drainage basins.

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

Report Period Water-Supply 

Paper

STATE 

Alabama, Water powers of, with an appendix on stream measurements in 1895-19O3

Mississippi. 

California, Water resources of, part 1, Stream measurements in Sacra- 1887-1912

mento River Basin. 

California, Water resources of, part 2, Stream measurements in San 1878-1912

Joaquln River Basin. 

California, Water resources of, part 3, Stream measurements in the Great 1891-1912

Basin and Pacific Coast river basins. 

California, southern, Surface water supply of Pacific slope of........... 189O-1918

California, Surface water supply of Sacramento River Basin............... 1895-1927

California, Surface water supply of San Joaquln River Basin.............. 1895-1927

California, southern, Surface water supply of Pacific slope basins in.... 1894-1927

California, Surface water supply of minor San Francisco Bay, northern 1895-1927

Pacific, and Great basins In. 

Colorado, Water resources 'of............................................. 1884-190O

Georgia, Water resources of.............................................. 1895-19O5

Massachusetts, Surface waters of..........'............................... 1848-1915

Massachusetts, Hydrology of, part 1, Summary of stream-flow and preoipi- 1863-1945

tation records. 

Nebraska, Surface water supply of........................................ 1S94-19O6

Oregon, Surface water supply of.......................................... 1878-1910

Texas, Summary of records of surface waters of........................... 1898-1937

Vermont, Surface waters of............................................... 1875-1916

Washington, Summary of hydrometric data in............................... 1878-1919

Washington, Summary of records of surface waters of...................... 1919-35

Wisconsin, northern. Water power of...................................... 1895-19O5

Wyoming, Surface waters of, and their utilization........................ 1894-1921

DRAINAGE BASIN

Colorado River (Arlz., Colo., N. Hex., Utah, Wyo.) and its utilization... 1888-1914 

Colorado River, upper (Colo., Utah), and its utilization................. 1897-1927

Colorado River Basin (Ariz., Calif., Colo., Utah, Wyo.), Surface waters 1891-1938

at base stations in. 

Colorado River Basin (Ariz., Calif., Nev., N. Hex., Utah), Surface waters 1888-1938

at stations on tributaries in lower. 

Columbia River Basin, upper (Mont., Idaho), Surface waters of............ 1898-1938

Great Salt Lake Basin, Water powers of........'........................... 1889-1920

Green River (Colo., Utah, Wyo.) and its utilization.,.................... 1894-1926

Kennebec River Basin (Maine), Water resources of......................... 1890-1906

Milk River. See St. Mary and Milk Rivers................................

Missouri and SET Mary River Basins (Mont.), Surface waters of............ 1881-1938

New-Kanawha River Basin (N. C., Va., W. Va.), Surface water supply of.... 1895-1920

Penobscot River Basin (Maine), Water resources of........................ 19O4-9

Potomao River Basin (D. C., Md., W. Va.)................................. 1895-19O6

Rio Orande Basin (Colo., N. Hex., Tex.). Water resources of.............. 1888-1913

St. Mary and Milk Rivers (Mont., Canada), Water supply of................ 1898-1917

St. Mary River. See St. Mary and Milk Rivers; Missouri and St. Mary

River Basin. 

Sevier Lake Basin (Utah), Utilization of surface water resources of...... 1889-1937

Susquehanna River Basin (Fa., Md.) Hydrography of........................ 189O-1904

300

447

597-E

636-D

636-E

637-A

74

197

415

1105

230

370

850

424

492

870

156

469

395

617

918

1049

918

517

618

198

917

536

279

192

358

491

920

109

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

not contained in the publications of the Geological Survey or are revisions of records 

previously published in its water-supply papers. The following table contains a list of 

these reports. _
10 SURFACE WATER SUPPLY, 1950, PART 9 

State reports containing compilations of records of discharge

State

Do. ........ 

Colorado... ...

Connecticut.. .

Illinois......

Kentucky. ..... 

Louisiana.. ...

Minnesota.. ... 

Mississippi. . .

Do.........

New Hampshire. 

New Jersey... .

New Mexico... . 

North Carolina

North Dakota. .

Do.........

Period

1895-1915 

1904-47

1857-1928 

1903-48

1881-1935 

1881-1938

1900-1927

1912-33 

1898-1946 

1895-1906

1908-11 

1900-1934 

1923-27 

1927-30 

1873-1932 

1873-1940

1941-42 

1895-1919

1924-28 

1928-35 

1935 39

1910-20 

1903-38

1887-1920 

1929-37

1892-1943

1931-48 

1909-12

1900-1948 

1857-1926

1927-39

1889-1911 

1881-1938

1894-1914

1914-28 

1889-1922 

1892-1928

1928-34 

1934-40

1888-1925 

1889-1923

1889-1936

1866-1945 

1820-1945

1866-1945 

1872-1945 

1857-1945 

1919-21

1882-1938 

1882-1944

1898-1921

1898-1944 

1902-39

1898-1939 

1878-1914 

1914-24 

1924-80

Report

Special Report 20, Mater Resources and Hydrology of southeastern Alabama.

Water resources of Colorado, Appendix 2, 

Data on stream-gaging stations of 

Colorado.^ 

Hater resources of Colorado, Appendix 3, 

vols. 1 and Z, Stream-flow data of 

Colorado. 

Hull. 44, Water resources of Connecticut...

*ub. 72, Surface water supply of Indiana... 

Mb. 112, Surface water supply of Indiana..

Water-Supply Bull. 1, Summaries of yearly 

and flood flow relating to* Iowa streams.. 

Hater-Supply Bull. 2, Surface water 

resources of Iowa.

Report of Division of Water Resources......

Surface waters of Kentucky. ................ 

Oeol. Bull. 16, Surface water supply of 

Louisiana.

Flow data and draft storage curves for 

major streams In Maryland. 

Bull. 1, Summary of records of surface 

waters of Maryland and the Potomac 

River Basin. 

Bull. 5, Anne Arundel County Hater Resources 

Hater-resources Investigation of Minnesota. 

Bull. 68, Surface Haters of Mississippi.... 

Vol. 20, 2d series. Water resources of 

Missouri. 

Vol. 26, 2d series, Surface waters of 

Missouri.

sources of Montana.

Annual and statistical report, vol. 12..... 

Bull. 33, Surface water supply of New 

Jersey . 

Special Hept. 5, Surface water supply of 

New Jersey. 

Special Hept. 9, Surface water supply of 

New Jersey. 

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

Bull. 34, Discharge records of North 

Carolina streams. 

Bull. 39, Discharge records of North 

Carolina streams. 

Hydrologlc Data on the Neuse River Basin, 

Hydrologic Data on the Cape Fear River 

Basin. Hydrologic Data on the Yadkln-Pee Dee River 

Basin. 

Hydrologic Data on the Catawba and Broad 

River Basins. 

Hydraulic Data on The French Broad River 

Basin. 

Report to Governor of North Dakota on 

flood control.

Supplement B, 4th biennial report ..........

Bull. 200, Compilation of stream-flow 

records of Ohio.

Bull. Ill, Ohio stream-drainage areas and 

flow-duration tables. 

Bull. 4, Hater resources of the State of 

Oregon . 

Bull. 7, Water resources of the State of 

Oregon . 

Bull. 8, Hater resources of the State of 

Oregon .

Issued by

Geological Survey of Alabama. 

Do

Arkansas Geological Survey. 

Arkansas Resources and Development Commission; 

University of Arkansas, 

Institute of Science and 

Technology. 

State Planning Commission, 

Hater Conservation Board, 

State engineer. 

Do.

State Geological and Natural 

History Survey. 

State Hater Commission. 

Florida Geological Survey. 

Geological Survey of Georgia. 

Do. 

Rivers and Lakes Commission.

Department of Conservation. 

Do. 

State Planning Board, 

[owa Geological Survey.

Do.

Kansas Hater Commission. 

Do. 

State Board of Agriculture. 

Do.- 

Do. 

Kentucky Geological Survey. 

Department of Conservation.

Maine Hater Power Commission. 

State Planning Commission and 

Hater Resources Commission. 

Department of Geology, Mines, 

and Hater Resources.

Do. 

State Drainage Commission.

Mississippi Geological Survey. 

Missouri Bureau of Geology 

and Mines. 

Missouri Geological Survey 

and Water Resources. 

Office of the State Engineer. 

Montana Agricultural Experiment Station. 

Bureau of Water Power, Irrigation, and Drainage. 

Do. 

Public Service Commission. 

Department of Conservation 

and Development. 

State Hater Policy Commission.

Do. .

Office of the State Engineer. 

Department of Conservation 

and Development.

Do. 

Do. 

Do.

Do. 

Do. 

Do. 

State chief engineer.

State Planning Board. 

State Hater Conservation 

Commission. 

Engineering Experiment Station, 

Ohio State University. 

Do. 

Department of Agriculture, 

Division of Conservation 

and Natural Resources. 

Engineering Experiment Station, 

Ohio State University. 

Office of the State Engineer.

Do. 

Do.

1 Contains records of yearly discharge only.

fe Contains records of maximum and minimum dally, weekly, and monthly discharge and yearly mean 

discharge.
PUBLICATIONS 

State reports containing compilations of records of discharge Continued

11

State

Oregon ........

Pennsylvania. .

Rhode Island. . 

South Carolina

Tennessee. .... 

Do.........

Washington. . . . 

Wisconsin. ....

Period

1930-36 

1936-41 

1890-1911 

1928-32

1929-41 

1884-1946

1874-1924 

1920-30 

1889-1905 

1906-10 

1911-16 

1895-1927 

1927-42

1927-42 

1927-42 

1927-42

1878-1933 

1888-1914 

1914-23

Report

Bull. 9, Water resources of the State of 

Oregon . 

Bull. 10, Water resources of the State of 

Oregon . 

Report of the Water Supply Commission of 

Pennsylvania.

Bull. 17, Summary of records of surface 

water supply of South Carolina.

Bull. 34, Water resources of Tennessee3 .... 

Bull. 40, Surface waters of Tennessee......

Bull. 4, Surface water supply of Virginia 

(Potoraao, Rappahannock, and York River 

Basins). 

Bull. 5, Surface water supply of Virginia 

(James River Basin). 

Bull. 6 ; Surface water supply of Virginia 

(Roanoke and Chowan River Basins). 

Bull. 7, Surface water supply of Virginia 

(Hew, Tennessee, and Big Sandy River 

Basins). 

Bull. 5, Monthly and yearly summaries of 

hydrometrlc data. 

1st report of Railroad Commission of Wisconsin to Legislature on water powers. 

2d report of Railroad Commission of Wisconsin to Legislature on water powers.

Issued by

Office of the State Engineer. 

Do.

Water Supply Commission of 

Pennsylvania. 

Department of Forests and 

Waters . 

Department of Public Works. 

South Carolina Research, 

Planning and Development 

Board. 

Department of Education. 

Do. 

Office of the State Engineer. 

Do. 

Do. 

Virginia Geological Survey. 

Virginia Conservation Commission.

Do. 

Do. 

Do.

Department of Conservation 

and Development. 

Railroad Commission of Wisconsin. 

Do.

3 Includes records of discharge *or all stations in Horth Carolina in the Tennessee River Basin. 

Hote.- In addition to the records contained in the reports listed above, the following States

Colorado, Connecticut, Idaho, Indiana, Kansas, Maine, Missouri, Montana, Nebraska, Nevada, Hew 

Mexico, Hew York (also Hew York City Board of Water Supply and city of Rochester ), North DaKota, 

Oregon, Pennsylvania, Rhode Island,1 South Dakota, Washington, and Wyoming.

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 noteworthy floods. The following list gives the numbers and titles of these reports:

Water-Supply 

Paper

147

162

334

426

487

488 

520-G 

KQK p

771 

773-E 

796-B 

796-C irlr843

914

ffiS

994

997

inan 

1134-A 

1134-B 

1137-A

Title 

The Passaic flood of 1902.

D^stSe flofds^tneVited States in 1903.

Destructive floods in the United States in 1904.

Destrustive floods in the United States in 1905.

The Ohio Valley flood of March-April 1913.

Southern California floods of January 1916.

The Arkansas River flood of June 3-5; iswi.

The floods in central Texas in September 1921.

Some floods in the Rocky Mountain region.

The New England flood of November L\)&t. .

F^ooarif theUnited states, magnituda and frequency.

The New York State flood of July 1935.

Flood on Republican and Kansas Rivers, May and June 1935.

Flood in La Canada Valley, Calif., January 1, 1934.

Floods of December 1937 in northern California.

tlon. through September 1938.

Basin, Ohio.

«-.

Texas floods of 1938 and 1939.

8S3 Cloudburst floods in Utah, 1850 to 1938.

Floods in Colorado.

Ssfo0f0Aug0ust191946 in the southeastern States .

Floods of May-June 1948 in Columbia River Basin.

Floods of August 4-5, 1943 in Central West Virginia

Floods of July 18, 1942 in North Central Pennsylvania.

Missouri Rive? Basin Floods of April -May 1950 in North and South Dakota.
12 SURFACE WATER SUPPLY, 1950, PART 9

RECORDS OP DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The Western Colorado Power Co. continued, during the water year October 1949 to September 1950, to collect records of daily discharge for Cascade Creek near Tacoma, Colo., which 

now cover the years 1915-50. 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.

COOPERATION

The work in the several States was done under cooperative agreements with the organizations listed below:

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.

Utah: Office of the State Engineer, H. A. Linke, succeeded by 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, Gov. A. G. Crane, president.

Financial assistance was furnished by the Corps of Engineers for the operation of six 

gaging stations in Arizona.

Financial assistance was also furnished by the Bureau of Reclamation, United States 

Department of the Interior.

Assistance in collecting the records was rendered by the following organizations: 

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

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

Association.

Utah: National Park Service of 'the United States Department of the Interior and 

Moon Lake Water Users' Association.

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

DIVISION OF WORK

The stream-gaging work was conducted 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 the stations in the several States were collected and 

prepared for publication under the supervision of district engineers as follows: In
DIVISION OF WORK 13

Arizona, In California, and for Gila River below Blue Creek, near Vlrden, N. Mex., J. H. 

Gardiner; In Colorado (except for Los Plnos River at Ignaclo) F. M. Bell, the work being 

done In collaboration with M. C. Hlnderllder, State engineer, and L. T. Burgess, State 

chief hydrographer; In New Mexico (except for Glla River below Blue Creek, near Vlrden) and 

for Los Plnos River at Ignaclo, Colo., Berkeley Johnson.; In Utah (except for Green River 

near Llnwood, Sheep Creek near Manila, Twomlle Creek near La Sal, and White River near 

Watson), and for Nevada, M. T. Wilson; In Wyoming and for Green River near Llnwood, Utah, 

Sheep Creek near Manila, Utah, Twomile Creek near La Sal, Utah, and White River near Watson, 

Utah, F. M. Bell.

The records were reviewed and the manuscript prepared for publication under the direction of B. J. Peterson, chief, annual reports section.
14 GAGING-STATION RECORDS

COLORADO RIVER MAIN STEM 

Colorado River near Grand Lake, Colo.

Location.--Water-stage recorder, lat. 40°14', long. 105°51', in sec. 13, T. 3 N., R. 76 

W., 200 feet downstream from bridge on U. S. Highway 34, a quarter of a mile upstream 

from high-water line of Shadow Mountain Reservoir, and 3 miles southwest of town of 

Grand Lake.

Drainage area.--103 square miles.

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

to September 1950.

Average discharge.--29 years, 106 second-feet.

Extremes.--Maximum discharge during year, 418 second-feet June 18 (gage height, 5.24 feet); 

minimum daily, 3.8 second-feet July 26, 27.

1904-9, 1910-18, 1934-50: Maximum discharge observed, 1,840 second-feet June 15, 16, 

1918 (gage height, 7.0 feet); minimum, 1.6 second-feet July 17, 1934 (gage height, 1.32 

feet, site and datum then in use).

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

which are fair. Diversions above station for irrigation. Transmountain diversion by 

Grand River ditch through La Poudre Pass to Cache la Poudre River Basin (see p. 27).

Revisions. W 1039: Drainage area.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

32 

32 

30 

27 

26

26 

30 

28 

26 

30

29 

28 

33 

35 

33

32 

32 

33 

36 

35

32 

27 

29 

29 

28

27 

26 

28 

28 

27 

b26

Nov.

25 

28 

25 

25 

25

26 

24 

23 

23 

23

22 

22 

b20 

b!8 

b!7

b!7 

*b!7 

b!6 

b!6 

b!6

b!6 

b!6 

b!6 

b!6 

b!4

bI4 

b!4 

b!4 

b!4 

b!4

Dec.

b!4 

b!3 

b!3 

b!3 

b!3

b!3 

b!3 

*b!3 

b!3 

b!3

b!3 

b!4 

b!4 

b!4 

blS

bis 

blS 

blS 

blS 

blS

b!4 

b!3 

b!3 

b!4 

b!3

b!4 

b!4 

blS 

bis 

b!6 

b!6

Jan.

b!6 

b!6 

blS 

b!3 

b!2

b!3 

b!3 

a!4 

a!6 

18

17 

*17 

18 

18 

18

18 

18 

18 

18 

18

b!8 

b!8 

b!8 

b!8 

b!7

b!6 

b!6 

b!6 

18 

18 

17

Feb.

b!6 

blS 

b!4 

a!5 

a!5

a!7 

17 

16 

*b!6 

b!5

b!5 

b!6 

b!6 

b!6 

b!6

b!6 

blS 

blS 

b!6 

b!7

b!8 

b!7 

18 

16 

16

18 

18 

17

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

ber

lendar year 1949

ember ...................................

ter year 1949-50 .......................

Mar.

blS 

b!7 

18 

18 

b!9

b!8 

b!8 

b!8 

18 

18

17 

17 

b!6 

b!7 

18

*17 

18 

18 

19 

b20

b!9 

b!8 

18 

17 

17

16 

b!6- 

b!7 

b!7 

b!6 

17

Apr.

16 

16 

16 

b!6 

b!6

16 

16 

18 

19 

*19

b20 

b28 

36 

38 

44

56 

78 

93 

82 

90

117 

146 

160 

135 

90

82 

69 

68 

74 

57

Secondfoot-days

920 

576 

433

35,030

514 

452 

542 

1,731 

4,382 

7,308 

740.1 

534.7 

1,153

19,285.8

May

56 

78 

104 

128 

106

87 

80 

72 

69 

63

64 

82 

93 

101 

117

142 

169 

200 

178 

176

190 

232 

295 

283 

228

192 

185 

167 

150 

133 

162

Maximum

36 

28 

16

921

18 

18 

20 

160 

295 

368 

84 

27 

93

368

June

202 

250 

274 

222 

210

280 

332 

342 

262 

277

328 

364 

368 

339 

350

332 

353 

328 

256 

230

200 

185 

169 

158 

156

135 

117 

104 

95 

90

July

84 

78 

78 

72 

66

57 

36 

28 

25 

22

25 

20 

16 

12 

10

8.2 

6.0 

5.8 

7.6 

7.2

6.0 

5.5 

5.2 

5.0

4.2

3.8 

3.8 

4.0 

4.5 

9.3 

25

Minimum

26 

14 

13

13

12 

14 

15 

16 

56 

90 

3.8 

6.5 

16

3.8

Aug.

13 

14 

15 

16 

16

15 

16 

16 

14 

22

19 

20 

17 

14 

11

8.2 

6.5 

10 

18 

18

20 

20

18 

16 

17

19 

27 

25 

26 

23 

20

Mean

29.7 

19.2 

14.0

96.0

16.6 

16.1 

17.5 

57.7 

141 

244 

23.9 

17.2 

38.4

52.8

Sept.

18 

18 

18 

16 

16

16 

16 

16 

16 

18

28 

50 

40 

34 

41

57 

52 

44 

47 

93

78 

66 

57 

53 

50

45 

40 

36 

38 

36

Runoff In 

acre-feet

1,820 

1,140 

859

69,480

1,020 

897 

1,080 

3,430 

8,690 

14,500 

1,470 

1,060 

2,290

38,260

* Winter discharge measurement made on this day.

tlons.

b Stage-discharge relation affected by Ice.
COLORADO RIVER MAIN STEM 15

Shadow Mountain Reservoir near Grand Lake, Colo.

Location. --Staff gage, lat. 40°13', long. 105°50 I , in SW^NWt sec. 19, T. 3 N., R. 75 W., 

on upstream face of Shadow Mountain Dam on Colorado River, about a quarter of a mile 

upstream from Pole Creek and 3£ miles south of town of Grand Lake. Datum of gage is 

mean sea level (Bureau of Reclamation bench mark).

Records available. --April 1947 to September 1950.

Extremes . --Maximum contents computed during year, 17,070 acre-feet Sept. 21; minimum 

computed, 6,280 acre-feet May 30.

1947-50: Maximum contents computed, 17,330 acre-feet July 21, 1949; minimum computed, 2,630 acre-feet May- 14, 1948; no storage prior to April 1947.

Remarks .--Reservoir is formed by earth and rock-fill dam and dikes. Storage began in 

April 1947 while dam was under construction. Capacity of reservoir, 17,860 acre-feet 

(including usable capacity of Grand Lake above elevation 8,365 feet), between elevations 

8,347 feet (sill of outlet gate), and 8,367 feet (crest of spillway). Dead "storage in 

Shadow Mountain Reservoir, 506 acre-feet. Dead storage in Grand Lake not determined. 

Reservoir is used for stabilization of water level in Grand Lake, to which it is connected by canal. Transmountain diversion of Colorado River water and water to be 

pumped from Granby Reservoir is effected through Grand Lake and Alva B. Adams tunnel, 

for power and irrigation in Big Thompson River Basin. Figures given herewith are 

combined figures of usable contents for Shadow Mountain Reservoir and Grand Lake.

Cooperation. --Records furnished by Bureau of Reclamation. 

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

Monthly contents, water year October 1949 to Septembe

Date

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

Calendar year 1949 .............

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

Water year 1949-50. ............

Contents 

(acre-feet)

83620

_

7,540

15,870

16,890

-

Change In 

contents 

during month 

(acre-feet)

-6,570

-400

+4,290

-410

+ 750

-1,480

-1,200

+10,180

-650

+1,030

+2,910
16 COLORADO RIVER MAIN STEM

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

Location.--Water-stage recorder and Parshall flume, lat. 40°20', long. 105°35 ! , in Wj 

sec. 9, T..4 N., R. 73 W., at East Portal and 4j miles southwest of Estes Park.

Records available.--August 1947 to September 1950.

Extremes.--Maximum daily discharge during year, 213 second-feet June 17; no flow at times. 

T9"47-50: Maximum daily discharge, that of June 17, 1950; no flow at times.

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 second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apri 

May.

June 

July 

Augu 

Sept

Ua

lendar year 1949

ter year 1949-5O .......................

Mar.

,

Apr.

Secondfoot-days

0 

0 

0

8,029.0

0 

0 

0 

0 

2,483 

6,021 

3,970 

590 

18B

13,250

May

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

o

0

0 

22 

135 

185 

185

185 

199 

201 

204 

201

192 

187 

159 

124 

122 

182

Maximum

O 

0 

0

185

0 

0 

0 

0 

204 

213 

202 

42 

54

213

June

196 

204 

205

197 

193

203

210 

201 

19B 

200

207 

209 

203 

201 

205

203 

213 

208 

197 

190

191 

196 

196 

198 

201

201 

201 

198 

198 

200

Minimum

July

173 

202 

202 

202 

189

177 

180 

172 

198 

18B

170 

202

177 

176 

182

160 

122 

68 

117 

107

104 

93 

93 

83

68

76 

64 

0 

0 

0 

27

0 

0 

0

O

0 

0 

0 

0 

0 

190 

0 

0 

0

0

Aug.

42 

,' 38 

28 

28 

28

28 

28 

28 

28 

28

28 

28 

28 

14 

29

29 

23 

20

17 

15

15 

15 

15 

10 

0

0 

0 

0 

0 

0 

0

Mean

0 

0 

0

22.0

0 

0 

0 

0 

80.1 

201 

128 

19.0 

6.20

36.3

Sept.

0 

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

26 

54 

54

26 

0 

0 

0 

0

0 

0 

0 

0 

26

Runoff in 

acre-feet

0 

0 

0

15,920

0 

0 

0 

0 

4,920 

11,940 

7,870 

1,170 

3B9

26,270
COLORADO RIVER MAIN STEM 17

Colorado River below Shadow Mountain Dam, Colo.

Location.--Water-stage recorder, lat. 40°12', long. 1050 50', in SE£ sec. 19, T. 3 N., R. 

'tb w., Just upstream from Pole Creek, about a quarter of a mile downstream from Shadow 

Mountain Dam, and 3j miles south of town of Grand Lake. Datum of gage is 8,320.00 feet 

above mean sea level (Bureau of Reclamation bench mark).

Drainage area. 190 square miles.

Records available.--October 1947 to September 1950.

Extremes.--Maximum discharge during year, 2,190 second-feet Nov. 15 (gage height, 4.58 

feet); minimum daily, 11 second-feet Oct. 18, 19.

1947-50: Maximum discharge, that of Nov. 15, 1949; maximum gage height, 4.81 feet 

June 20, 1949; minimum dailyJdischarge, that of Oct. 18, 19, 1949.

Remarks.--Records excellent above 100 second-feet and good below. Flow regulated by 

Shadow Mountain Reservoir (see p. 15). Diversions aboye reservoir for'irrigation. 

Transmountain diversion by Grand River ditch (see p. 27) and by Alva B. Adams tunnel 

(see preceding page).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

14 

14 

14 

14 

14

14 

14 

15 

15 

15

15 

14 

14 

14 

13

13 

12 

11 

11 

33

57 

57 

54 

36 

19

20 

19 

25 

32 

31 

30

Nov.

30 

31 

32 

30 

30

30 

30 

30 

28 

40

40 

40 

40 

40 

295

34 

38 

38 

38 

38

54 

88 

325 

463 

520

579 

530

440 

294 

56

Dec.

46 

36 

32 

24 

25

25 

25 

25 

25 

25

25 

24 

24 

24 

23

23 

24 

24 

23 

24

24 

24 

24 

24 

24

24 

24 

24 

24 

24 

24

Jan.

24 

24 

25 

26 

25

25 

26 

26 

26 

28

26 

26 

28 

28 

26

26 

28 

28 

26 

26

28 

28 

26 

26 

26

26 

26 

26 

26 

26 

25

Feb. .

25 

25 

26 

25 

25

25 

25 

23 

23 

22

22 

23 

24 

24

23

23 

24 

24 

25 

24

25

26 

26 

26 

26

26 

28 

26

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

1..... ..................................

ter year 1949-50 .......................

Mar.

26

26 

28 

29 

29

29 

29 

29 

30 

30

30 

30 

30 

31 

31

31 

31 

31 

31

31

31 

31 

31 

31 

31

31 

30 

30 

30 

30 

30

Apr.

30 

30 

30 

30 

30

30 

30 

31 

31 

42

51 

31 

34 

39 

42

45 

46 

48 

63 

96

171 

371 

321 

215 

215

184 

130 

130 

- 136

133

Secondfoot-days

673 

4,301 

790

73,682

812 

689 

928 

2,815 

7,614 

13,871 

2,023 

764 

1,529

36,809

May

133 

133 

130 

130 

142

168 

168 

168 

168

142

126 

110 

82 

82 

100

208 

345 

399 

340 

222

222 

280 

488 

572 

698

530 

315 

284 

259 

244 

226

Maximum

57 

579

46

1,730

28

28 

31 

371 

698 

1,180 

162 

30 

156

1,180

June

172 

98 

102 

104 

174

438 

848 

1,180 

814 

503

551 

974 

992 

1,010 

1,010

485 

121 

588 

947 

782

459 

288 

225 

115 

90

92

177 

278 

133 

121

July

112 

112 

133 

162 

162

159 

119 

76 

50 

36

36 

60 

74 

54 

40

48 

46 

45 

46 

45

45 

45 

45 

46

46

31 

30 

30 

30 

30 

30

Minimum

11 

28 

23

11

24 

22 

26 

30 

82 

90 

30 

22 

20

11

Aug.

30 

30 

30 

30 

30

30 

30 

30 

30 

26

24 

23 

23 

23 

23

22 

22 

22 

22 

22

22 

22 

22 

22 

22

~2Z 

22 

22 

22 

22 

22

Mean

21.7 

143 

25.5

202

26.2 

24.6 

29.9 

93.8 

246 

462 

65.3 

24.6 

51.0

101

Sept.

22 

22 

22 

22 

22

22 

21 

21

21 

21

21 

21 

21 

21 

21

20 

20 

21 

22 

94

142 

156 

156 

153 

95

17 

58 

86 

84 

84

Runoff In 

acre-feet

1,330 

8,530 

1,570

146,100

1,610 

1,370 

1,840 

5,580 

15,100 

27,510 

4,010 

1,520 

3,030 -

73,000
18 COLORADO RIVER MAIN -STEM

Granby Reservoir near Granby, Colo.

Location.--Staff gage, lat. 40<> 09' > long. 105°52'. in sec.' 11, T. 2 N., R. 76 W., at upstream face of Granby Dam on Colorado River, ! £ miles upstream from Walden Hollow and 

5¥ miles northeast of Granby. Datura of gage is mean sea level (Bureau of Reclamation 

bench mark).

Records available.--June to September 1950.

Extremes.--Maximum contents during period, 43,760 acre-feet Sept. 30 (elevation, 8,200.70 

i'eet); no storage prior to June 14.

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

1949, and usable storage began June 14, 1950, while dam was under construction. Usable 

capacity of reservoir, 467.500 acre-feet between elevations 8,186.00 feet (trashrack 

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

storage 77,330 acre-feet. 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.

Monthly elevation ntents, June to September 1950

Date

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

The period. ..............

Elevation 

(feet)

8,200.70

-

Contents 

(acre-feet)

43,760

-

Change in contents 

during month 

(acre-feet)

+2,500

+43,760
COLORADO RIVER MAIN STEM 19

Colorado River near Granby, Colo.

Location.--Water-stage recorder, lat. 40°07', long. 105°54 I , in sec. 22, T. 2 N., R. 76 W., 

about half a mile upstream from bridge on U. S. Highway 34, ij miles upstream from 

Willow Creek, and 4 miles northeast of Granby.

Drainage area.--322 square miles.

Records available.--June 1908 to September 1911, May 1934 to September 1950.

Extremes.--Maximum discharge during year, 59 second-feet July 23; maximum gage height, 1.84 

feet Dec. 28, backwater from ice; minimum daily discharge, 6.6 second-feet Jan. 29.

1908-11, 1934-50: Maximum discharge observed, 4,100 second-feet June 20, 1909 (gage 

height, 5.5 feet, datum then in use); minimum daily, that of Jan. 29, 1950; minimum 

observed, prior to starting construction of Shadow Mountain Reservoir, 20 second-feet 

Apr. 6, 1936 (discharge measurement).

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

which are fair. Diversions above station for irrigation. Transmountain diversions by 

Grand River ditch (see p. 27) and Alva B. Adams tunnel (see p. 27). Flow regulated by 

Granby Reservoir (see preceding page).

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

27 

27 

26 

26 

26

26 

27 

29 

26 

25

24 

24 

24 

25 

25

25 

27 

25 

27 

29

29 

30 

30

31 

31

31 

31 

32 

32 

34 

35

Nov.

34 

34 

35 

35 

35

38 

39 

34 

24 

13

30 

30 

32 

29 

22

29 

*31 

30 

24 

30

31 

30 

30 

27 

29

30 

30 

30 

31 

30

Dec.

29 

30 

32 

30 

31

32 

34 

32 

30 

*35

25 

16 

17 

35 

25

27 

31 

35 

37 

36

36 

35 

34 

35 

34

35 

35 

34 

35

36 

33

Jan.

33 

34 

33 

34 

35

33 

31 

33 

31 

29

29 

27 

*31 

32 

35

35 

35 

34 

33 

32

29 

24 

19 

16

13

11 

9.4

8.6 

6.6 

8.6 

27

Feb.

32 

38 

39 

41 

42

42 

40 

39 

38 

*40

41 

42 

44 

42 

43

41 

40 

40 

42 

43

42 

41 

42 

42 

42

40 

40 

40

Month

Goto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mov

June 

July 

Augu 

Sept

Wa

lendar year 1949

1... ....................................

ter year 1949-5Q .......................

Mar.

39 

39 

40 

40 

42

40 

40 

40 

40 

40

40 

40 

44 

46 

48

47 

45 

*45 

48 

45

50 

50 

48 

45 

46

45

42 

44 

48 

51 

46

Apr.

46 

46 

46 

48 

50

46 

48 

52 

52 

51

52 

52 

52 

52 

51

51 

51 

42 

39 

40

39 

26 

22 

18 

17

24 

38 

36 

38 

36

Secondroot-days

866 

906 

981

124,512

821.2 

1,138

1,363 

1,261 

1,012 

694 

453 

594 

843

10,932.2

May

36 

36 

35 

35 

35

36 

36 

35 

35 

35

35 

35 

35 

32 

30

30 

30 

30 

30 

29

30 

30 

29 

29 

32

36 

34 

31 

31 

30 

30

Maximum

35

39 

37

2,870

35 

44 

51 

52 

36 

39 

17 

29 

32

52

June

30 

32 

39 

32

31

30 

32 

31 

32 

30

27 

23 

24 

10 

29

25 

22 

19 

20 

19

18 

17 

17 

16 

16

16 

15 

14 

14 

14

July

14 

14 

15 

14

14

14

16 

15 

14 

14

15 

14 

14 

14 

15

14 

14 

15 

17

16

16 

14 

17 

16 

15

15

15 

14 

13 

13

13

Minimum

24 

13 

16

13

6.6 

32 

39 

17 

29 

10 

13 

13 

26

6.6

Aug.

13 

14 

14 

14 

14

14 

14 

14 

14

15

15 

16 

16 

15 

14

14 

15 

18 

17 

20

25 

27 

27 

27 

27

27 

26 

26 

29 

27 

26

Mean

27.9 

30.2 

31.6

341

26.5 

40.6 

44.0 

42.0 

32.6 

23,1 

14.6 

19.2 

28.1

30.0

Sept.

26 

26 

ZB 

26 

26

26 

26 

26 

26 

26

26 

26 

26 

26 

29

29 

29 

29 

30 

30

30

31 

31 

31 

32

32 

30 

26 

30 

30

Runoff in 

acre -feet

1,720 

1,800 

1,950

247,000

1,630 

2,260 

2,700 

2,500 

2,010 

1,380 

899 

1,180 

1,670

21,700

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 30 to Dee. 5, Dec. 8, Deo. 16 to Jan. 19, Feb. 

3 to Mar. 17 (no gage-height record Jan. 2-12, Mar. 15-17; discharge computed on basis of weather 

records and records for nearby stations}.
20 COLORADO RIVER MAIN STEM

Colorado River at Hot Sulphur Springs, Colo.

Location.--Water-stage recorded, lat. 40°05', long. 106°05', in sec. 1, T. IN., R. 78 W., 

atout 1,000 feet north of U. S, Highway 40, 1 mile east of Hot Sulphur Springs, and 3 

miles upstream from "Beaver Creek.

Drainage area. 782 square miles.

Records available.--July 1904 to September 1909, September 1910 to September 1924, October 

i92b to September 1928, October 1933 to September 1950 in reports of Geological Survey. 

July 1904 to September 1909, September 1910 to September 1924, October 1925 to September 1950 In reports of State engineer.

Average discharge. 44 years (1904-9, 1910-24, 1925-50), 660 second-feet.

extremes. Maximum 'discharge during year. 1,140 second-feet June 2; maximum gage height, 

<i.43 "feet Mar. 21 (backwater"from ice); minimum daily, 51 second-feet Dec. 13, 14.

1904-9, 1910-24, 1925-50: Maximum discharge observed, 10,300 second-feet June 15, 

1921 (gage height, 8.7 feet, site and datum then in use); minimum daily determined, 36 

second-feet Dec. 30, 31, 1931.

Remarks.--Records excellent except those for periods of ice effect, which are Pair. Flow 

arrected by tj?ansmountain diversions, storage reservoirs, and diversions J"or irrigation^ 

Records of chemical analyses, water temperatures, and sediment loads for the water ye"ar" 

1950 are given in Water-Supply Paper 1189.

Hating table, water year 1949-5O, except-periods of Ice effect 

(gage height, in feet, and discharge, In second-feet) 

(Shifting-control method used Oct. 1-20, 

Novi. 26 to Dec. 2, Dec. 9, 10)

0.2 55 0.9 285 

.3 76 1.3 490 

.5 128 1.6 680 

.6 160 2.1 1,110

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

106 

111 

103 

95 

90

90 

90 

93 

95 

103

106 

103 

108 

114 

114

111 

111 

125 

131 

128

120 

111 

114 

120 

120

120 

111 

114 

117 

122 

120

Nov.

134 

134 

131 

125 

122

122 

122 

117 

128 

128

122 

114 

111 

120 

138

108 

111 

 114 

120 

122

112 

112 

118 

119 

119

108 

122 

122 

117 

100

Dec.

108 

111 

109 

100

92

110 

123 

118 

128 

*125

122 

90 

51 

51 

58

55 

77 

110 

103 

104

100 

100 

100 

92 

95

94 

96 

92 

96 

90 

80

Jan.

94 

92 

96 

91 

95

94 

87 

83 

82 

82

78 

77 

70 

*76 

85

92 

92 

92 

86 

79

79 

81 

84 

86 

86

86 

85 

87 

90 

89 

89

Feb.

87 

86 

87 

92 

96

95 

94 

91 

86 

80

*85 

90 

87 

91 

90

83 

82 

82 

86 

85

90 

95 

96 

92 

94

97 

95 

99

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Ma TT

June 

July 

Augu 

Sept

Wa

ber. ................ ....................

lendar year 194S 

ary

ter year 1949-50 .......................

Mar.

88 

90 

95 

95 

94

96 

92 

92 

95 

94

94 

91 

85 

83 

89

90 

*97 

98 

99 

101

102 

99 

100 

97 

108

105 

107 

85 

95 

100 

110

Apr.

120 

135 

146 

119 

130

170 

270 

370 

474

335

276 

*300 

355 

415 

395

320 

375 

410 

345 

330

430 

484 

532 

462 

305

320 

285 

300 

335 

295

Secondfoot-days

3,416 

3,592 

2,980

241,222

2,665 

2,513 

2,966 

9,538 

16,919 

21,823 

6,170 

3,019 

2,978

78,579

May

295 

335 

420 

526 

446

400 

415 

395 

375 

360

370 

425 

446 

462 

520

550 

598 

680 

645 

645

659 

715 

806 

830 

830

736 

729 

638 

568 

520 

580

Maximum

131 

138 

128

5,060

96 

99 

110 

532 

830 

1,050 

310 

125 

154

1,050

June

715 

848 

1,050 

8S4 

790

857 

965 

965 

848 

806

848 

911 

938 

884 

893

893 

947 

848 

743 

687

610 

580 

532 

484 

452

425 

400 

370 

335 

315

July

300 

295 

310 

295 

258

228 

224 

232 

244 

228

249 

224 

188 

200 

188

192 

188 

208 

244 

220

188 

154 

138 

144 

138

134 

128 

117 

111 

103 

100

Aug.

95 

83 

88 

98 

93

103 

108 

95 

93 

90

93 

98 

93 

93 

95

93 

90 

90 

90 

90

98 

100

95 

95 

95

108 

125 

117 

114 

106 

95

Minimum Mean

90 110 

100 120 

51 96.1

51 661

70 86.0 

80 89.8 

83 95.7 

119 318 

295 546 

315 727 

100 199 

83 97.4 

70 99.3

51 215

Sept.

90 

88 

86 

81 

76

72 

70 

72 

74 

83

86 

100 

114 

111 

103

111 

108 

100 

111 

147

154 

12* 

120 

108 

106

103 

100 

93 

93 

90

Runoff in 

acre-feet

6,780 

7,120 

5,910

478,400

5,290 

4,980 

5,880 

18,920 

33,560 

43,290 

12,240 

5,990 

5,910

1S5.900

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 21-25, Dec. 3-8, Dec. 11 to Apr. 7.
COLORADO RIVER MAIN STEM 21

Colorado River near Dotsero, Colo.

Location.--Water-stage recorder, lat. 39°39', long. 1Q7°05', in sec. 6, T. 5 S., R. 86 ¥.,

 aoout 500 feet south of U. S. Highways 6 and 24, ij miles west of Dotsero, and If miles

downstream from Eagle River. 

Drainage area. 4,390 square miles. 

Hecords available. December 1940 to September 1950. 

Average discharge.--10 years (1940-50), 2,278 second-feet. 

Extremes.--Maximum discharge during year, 9,020 second-feet June 13 (gage height, 7.80

 feet); minimum daily, 629 second-feet Dec. 13.

1940-50: Maximum discharge, 16,100 second-feet May 22, 1948 (gage height, 10.24

feet); minimum daily, 350 second-feet Jan. 5, 1944. 

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

wHTch are fair. Plow affected by transmountain diversions, storage reservoirs, power

developments, and diversions for irrigation. 

Cooperation.--Gage-height record furnished by The Public Service Co. of Colorado.

Rating tables, vater year 1949-50, except period of loe'effect 

Tgage height, In feet, and discharge, In second-feet) 

(Shifting-control method used Apr. 8-26, Sept. 15-30)

Oct. 1 to July 4 July 5 to Sept. 30

1.5 585 4,9 3,860 1.9 750 

2.0 870 6.5 6,480 2.4 1,120 

2.9 1,560 7.8 9,020 3.1 1,720 

3.8 2,440 4.0 2,680

Discharge, In second-feet, water year October 1949 to September 1950

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 

38 

29 

30 

31

Oct.

1,210 

1,080 

1,040 

1,020 

1,220

1,090 

926 

891 

828 

846

1,040 

1,050 

852 

852 

877

926 

822 

840 

891 

1,100

1,090 

982 

891 

858 

828

905 

847 

968 

947 

961 

858

Nov.

852 

898 

1,020 

1,040 

996

933 

792 

822 

1,030 

996

1,020 

947 

858 

768 

891

1,020 

968 

926 

846 

798

722 

840 

870 

1,100 

919

852 

780 

756 

884 

961

Dec.

852 

884 

940 

822 

*695

870 

1,050 

1,080 

1,300 

1,070

870 

634 

629 

1,040 

bl,050

850 

830 

960 

840 

830

1,000 

1,'040 

810 

740 

840

910 

950 

960 

900 

830 

840

Jan.

900 

800 

870 

650 

740

700 

750 

730 

680 

660

720 

1,050 

940 

960 

800

670 

660 

1,100 

1,040 

1,060

1,100 

900 

830 

900 

950

820 

850 

950 

880 

800 

730

Feb.

1,020 

980 

820 

850 

820

1,070 

1,080 

1,000 

940 

880

920 

840 

730 

700 

860

880 

900 

980 

850 

760

800 

1,000 

1,080 

1,120 

1,200

1,080 

380 

860

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Unn

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-30 .......................

Mar.

1,320 

1,280 

1,310 

1,260 

1,150

1,020 

1,000 

1,180 

1,370 

1,440

*1,500 

1,340 

858 

1,500 

1,320

1,210 

1,300 

1,120 

1,040 

877

1,140 

1,280 

1,260 

1,350 

1,270

1,300 

1,360 

940 

1,220 

1,220 

1,220

Apr.

1, 

1, 

1, 

1, 

1,

1, 

1, 

2, 

2, 

2,

2, 

2, 

2, 

2, 

2,

2, 

2, 

2, 

2, 

2,

2, 

2, 

3, 

2, 

2,

z,

2, 

2, 

2,

1,

Secondfoot -days

29,636 

27,105 

27,916

955,858

26,190 

25,900 

37,955 

68,340 

117,660 

190,170 

61,044 

36,031 

29,311

677,258

340 

420 

440 

520 

320

380 

580 

460 

550 

540

410 

330 

410 

600 

840

6^0 

300 

620 

750 

410

430 

640 

200 

750 

930

620 

230 

400 

420 

810

May

1,650 

2,240 

2,430 

2,810 

3,220

2,820 

2,670 

2,120 

2,210 

2,370

2,060 

2,240 

2,540 

3,140 

3,820

4,030 

4,350 

5,040 

5,020 

4,760

4,830 

5,100 

6,120 

6,730 

6,320

5,670 

4,910 

4,430 

3,960 

3,930 

4,120

Maximum

1,220 

1,100 

1,300

14,200

1,100 

1,200 

1,500 

3,200 

6,730 

8,260 

3,450 

1,380 

1,260

8,260

June

5,130 

6,370 

7,060 

6,300 

5,890

7,190 

7,840 

7,700 

6,710 

6,480

6,550 

7,020 

8,060 

8,080 

8,040

7,960 

8,260 

7,860 

6,930 

6,480

6,320 

6,160 

5,520 

5,310 

4,960

4,520 

4,280 

3,860 

3,750 

3,580

July

3,450 

3,020 

2,870 

2,790 

2,580

2,546

2,340 

2,370 

2,280 

2,050

2,400 

2,370 

2,190 

2,060 

1,890

1,500 

1,410 

1,880 

2,020 

2,030

1,820 

1,680 

1,330 

1,190 

1,240

1,510 

1,400 

1,420 

1,360 

1,070 

984

Aug.

1,290 

1,310 

1,280 

1,300 

1,250

1,020 

1,O60 

1,190 

1,220 

1,240

1,180 

1,150 

925 

976 

1,160

1,200 

1,100 

984 

1,000 

946

820 

1,200 

1,190 

1,230 

1,190

1,260 

1,160 

1,230 

1,380 

1,310 

1,280

Minimum Mean

822 956 

722 904 

629 901

510 2,619

650 845 

700 925 

858 1,224 

1,320 2,278 

1,650 3,795 

3,580 6,339 

984 1,969 

820 1,162 

771 977

629 1,856

Sept.

1,260 

1,220 

1,020 

904 

1,020

1,180 

1,030 

925 

900 89O

980 

1,080 

1,050 

1,270 

1,040

890 

820 

771 

. 841 

1,230

1,020 

1,000 

1,020 

876 

641

841 

960 

820 

778 

834

Runoff In 

acre-feet

58,780 

53,760 

55,370

1,896,000

51,950 

51,370 

75,280 

135,600 

233,400 

377,200 

121,100 

71,470 

58, 140

1 , 343 , 000

Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Hote. Ho gage-height record Dec. 16 to Mar. 8 (stage-discharge relation affeoted by Ice during 

period), Sept. 9-11; discharge computed on basis of veather records and records for station at Glenvood Springs.
22 COLORADO RIVER MAIN STEM

Colorado River at Glenwood Springs, Colo.

Location.--Water-stage recorder, lat. 39°33', long. 107°19', in sec. 9, T. 6 S., R. 89 W. ; 1U reet from U. S. Highways 6 and 24 at power plant at Glenwood Springs, half a mile 

upstream from Roaring Fork. Datum of gage is 5,720.71 feet above mean sea level, adjustment of 1912.

Drainage area.--4,560 square miles.

Records available.--May 1899 to September 1950.

Average discharge. 51 years, 2,885 second-feet.

Extremes. Maximum discharge during year, 10,100 second-feet June 13 (gage height, 7.67 

reet); minimum daily, 610 second-feet Dec. 13.

1899-1950: Maximum discharge, 30,100 second-feet June 14, 15, 1918 (gage height, 

12.55 feet); minimum daily, 286 second-feet Jan. 22, 1935.

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

good. Flow affected by trartsmountain diversions, storage reservoirs, power developments, and diversions for irrigation. Low flow regulated by Shoshone power plant 6 

miles above station.

Rating table, water year 1949-50 (gage height, in feet, 

and discharge, in second-feet)

3.0 610 5.3 3,460 

3.3 82O 6.0 5,1OO 

3.9 1,430 7.4 9,220 

4.6 2,280

Discharge, in second-feet ; water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1,190 

1,150 

1,120 

892 

1,230

1,290 

1,030 

901 

856 

874

883 

1,250 

883 

856 

901

990 

838 

865 

a 940 

al,150

al,160 

al,030 

950 

883 

865

950 

990 

980 

980 

1,010 

874

Nov.

856 

940 

1,020 

1,010 

1,070

1,050

856 

804 

1,020 

1,080

1,020 

1,000 

883 

772 

820

1,050 

1,020 

1,020 

883 

829

726 

796 

865 

970 

1,170

847 

796 

764 

733 

1,000

Dec.

920 

820 

93O 

930 

705

705 

1,080 

1,100 

1,280 

1,230

1,040 

719 

610 

1,090 

970

1,040 

874 

1,020 

874 

883

1,100 

1,140 

1,040 

796 

883

a940 

a970 

al,OOO 

a980 

a880 

a910

Jan.

990 

865 

910 

698 

804

719 

838 

804 

756 

691

756 

1,070 

960 

1,000 

892

740 

698 

1,030 

1,140 

1,090

1,230 

1,060 

892 

93O 

1,P50

892 

892 

1,040 

1,120 

847 

764

Feb.

1,030 

1,040 

865 

940 

820

1,030 

1,110 

1,090 

1,030 

883

910 

990 

764 

726 

892

892 

920 

1,030 

1,080 

796

829 

1,010 

1,130 

1,130 

1,280

1,280 

950 

883

Month

Octo 

Nove 

Dece

Ce

Jenu 

Pebr 

Marc 

Aprl

June

July 

Augu 

Sept

Wa

lendar year 1949

ter yeer 1949-50 .......................

Mar.

1,400 

1,300 

1,390 

1,320 

1,250

1,090 

1,040 

1,410 

1,570 

1,460

1,610 

1,400 

1,310 

1,130 

1,480

1,250

1,360 

1,210 

1,150 

1,030

1,000 

1,400 

1,330 

1,310 

1,330

1,340 

1,340 

1,340 

1,100 

1,240 

1,260

Apr.

1 

1 

1 

1 

1

1

1 

1 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

3 

3 

3

2 

2 

2 

2 

2

Secondfoot-days

30,761 

27,670 

29,459

1,026,412

28,168 

27,330 

40,150 

70,960 

130,560 

216,270 

69,040 

40,140 

33,414

743,922

300 

430 

470 

630 

470

410 

550 

970 

520 

620

440 

410 

470 

650 

900

860 

420 

65O 

890 

570

540 

780 

300 

080 

140

860 

490 

520 

600 

020

May

1,870 

2,180 

2,550 

2,970 

3,440

3,140 

2,860 

2,410 

2,330 

2,550

2,310 

2,390 

2,810 

3,260 

4,060

4,460 

4,760 

5,530 

5,610 

5,360

5,420 

5,780 

6,770 

7,460 

7,100

6,440 

5,640 

5,130 

4,580 

4,630 

4,760

Maximum

1,290 

1,170 

1,280

15,400

1,230 

1,280 

1,610 

3,300 

7,460 

9,120 

3,810 

1,450 

1,420

9,120

June

6,030 

7,340 

8,180 

7,490 

7,040

8,360 

8,960 

8,660 

7,790 

7,490

7,580 

8,210 

9,060 

9,060 

8,960

8,900 

9,120 

8,840 

7,790 

7,250

7,O4O 

6,920 

6,200 

5,890 

5,560

5,050 

4,840 

4,360 

4,220 

4,080

July

3,810 

3,410 

3,300 

3,140 

2,900

2,920 

2,620 

2,65O 

2,580 

2,390

2,580 

2,650 

2,470 

2,250 

2,110

1,780 

1,600 

1,870 

2,220 

2,250

2,O9O 

1,890 

1,640 

1,420 

1,380

1,580 

1,640 

1,620 

1,570 

1,460 

1,250

Aug.

1,210 

1,390 

1,410 

1,420 

1,440

1,380 

1,230 

1,230 

1,340 

1,360

1,210 

1,400 

1,320 

1,060 

1,110

1,310 

1,380 

1,200 

1,020 

1,180

990 

1,090 

1,390 

1,230 

1,390

1,410 

1,420 

1,350 

1,380 

1,450 

1,440

Minimum Mean

838 992 

726 922 

610 950

564 2,812

691 909 

726 976 

1,000 1,295 

1,300 2,365 

1,870 4,212 

4,080 7,209 

1,250 2,227 

990 1,295 

829 1,114

610 2,038

Sept.

1,420 

1,400 

1,330 

1,110 

1,120

1,160 

1,250 

1,160 

1,010 

1,150

1,040 

1,120 

1,200 

1,280 

1,410

1,130 

910 

847 

865 

1,200

1,410 

1,040 

1,150 

1,170 

865

910 

1,020 

1,070 

838 

829

Runoff in 

acre-feet

61,010 

54,880 

58,430

2,036,000

55,870 

54,210 

79,640 

140,700 

259,000 

429,000 

136,900 

79,620 

66,280

1,476,000

a No gage-height records discharge computed on basis of weather records, recorded range in stage, 

and records for station near Dotsero.
COLORADO RIVER MAIN STEM 83 

Colorado River near Cameo, Colo.

Location.--Water-stage recorder, lat. 39°13 I , long. 108°15', in sec. 6, T, 10 S., R. 97 

w., 100 feet 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. 8,055 square miles.

Records available. October 1933 to September 1950.

Average discharge. 17 years, 4,087 second-feet.

Extremes.--Maximum discharge during year, 17,600 second-feet June 13 (gage height, 8.10 

reet); minimum daily, 1,230 second-feet Jan. 7.

1933-50: Maximum discharge, 36,000 second-feet June 16, 1935 (gage height, 10.91 

feet); minimum daily, 700 second-feet Dec. 29, 1939.

Remarks.--Records excellent 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.

Rating table, water year 1949-50, except period of lee effect 

(gage height, in feet, and discharge, in second-feet)

1.5 1,830 5.4 8,320 

2.0 1,780 7.0 13,400 

2.9 3,130 8.1 17,600 

4.5 6,100

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

Z 

3 

4 

5

6 

7 

8 

9 

10

11 

13 

13 

14 

15

16 

17 

18 

19 

30

21 

ZZ 

23 

34 

35

26 

27 

38 

29 

30 

31

Oct.

2,240 

2,320 

2,160 

2,100 

2,030

2,220 

2,120 

1,970 

1,970 

1,980

1,950 

2,100 

2,120 

1,970 

 1,940

1,970 

2,020 

1,920 

2,050 

2,060

2,180 

2,200 

2,060 

1,990 

1,940

1,910 

1,950 

1,980 

1,980 

1,980 

1,950

Nov.

1,830 

1,840 

1,870 

1,990 

1,970

1,940 

1,910 

1,740 

1,730 

1,970

2,080 

2,010 

1,870 

1,810 

1,710

1,780 

1,970 

1,880 

1,860 

1,760

1,710 

1,600 

1,670 

1,730 

1,910

1,860 

1,710 

1,640 

1,6OO 

1,660

Dec.

1,760 

1,670 

1,610 

1,720 

1,650

1,480 

*1,610 

1,840 

1,880 

2,120

1,970 

1,720 

1,500 

1,320 

1,620

1,580 

1,620 

1,550 

1,680 

1,6OO

1,650 

1,710 

1,680 

1,630 

1,500

1,500 

1,520 

1,63O 

1,580 

1,400 

1,360

Jan.

1,450 

1,560 

1,530 

1,510 

1,400

1,340 

1,330 

1,310 

1,300 

1,260

1,240 

1,350 

1,600 

1,580 

1,540

1,400 

1,420 

1,500 

1,600 

1,560

1,400 

1,470 

1,630 

1,680 

1,720

1,800 

1,780 

1,700 

1,560 

1,320 

1,400

Feb.

1,500 

1,540 

1,560 

1,480 

1,5OO

1,580 

1,640 

1,660 

1,600 

1,520

1,470 

1,630 

1,500 

1,400 

1,370

1,400 

1,460 

1,540 

1,600 

1,550

1,440 

1,480 

1,580 

1,700 

1,850

3,050 

1,840 

2,060

Month

Octo 

Hove

Dece

Ca

Janu 

Pebr 

Hare 

Apr!

UBTT

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1,910 

2,020 

2,060 

1,980 

2,040

*1,820 

1,740 

1,820 

2,060 

2,340

2,110 

2,260 

1,950 

1,760 

1,990

2,010 

1,870 

1,970 

1,810 

1,770

1,680 

1,680 

1,940 

1,910 

1,94O

2,010 

1,980 

1,950 

1,310 

1,740 

1,840

Apr.

1, 

1, 

2, 

2, 

2,

2, 

2, 

2, 

3, 

3,

3, 

3,

3, 

3, 

3,

4, 

3, 

3, 

4, 

4,

3, 

4, 

4, 

5, 

4,

4,

4, 

4, 

4, 

4,

Secondfoot-days

63,220 

54,60O 

50,660

1,698,140

46,120 

44,500 

59,670 

107,010 

210,770 

396,540 

137,430 

62,750 

55,970

1,289,240

Peak discharge (base, 19,000 sec . -f t . ) . No ueak above

840 

940 

140 

220 

240

05O 

110 

46O 

160 

730

530 

35O 

320 

480 

880

200 

880 

530 

070 

310

950 

270 

880 

540 

880

850 

490 

090 

310 

310

Hay

3,480 

3,13O 

3,950 

4,540 

5,200

5,240 

4,690 

4,360 

3,710 

3,770

3,860 

3,590 

4,090 

4,540 

5,580

6,630 

7,100 

8,180 

8,960 

8,570

8,690 

9,650 

11,100 

12,400 

12,600

11,200 

9,590 

8,540 

7,840 

7,500 

8,490

Maximum

2,240 

2,080 

2,120

26,700

1,800 

2,060 

2,260 

5,540 

12,600 

16,700 

7,470 

2,300 

2,320

16,700

June

10,800 

13,200 

14,700 

14,100 

12,700

14,100 

16,300 

15,900 

14,100 

13,300

14,000 

15,400 

16,300 

16,6OO 

16,400

16,300 

16,700 

16,500 

14,900 

13,200

12,400 

12,40O 

11,300 

10,600 

10,600

10,000 

9,200 

8,660 

8,210 

7,870

July

7,470 

7.O50 

6,540 

6,170 

5,940

5,520 

5,320 

5,480 

5,560 

5,240

5,380 

5,520 

5,120 

4,720 

4,430

4,150 

3,680 

3,500 

4,060 

4,020

3,930 

3,570 

3,300 

2,950 

2,68O

2,620 

2,840 

2,780 

2,830 

2,620 

2,440

Aug.

2,180 

2,180 

2,290 

2,290 

2,300

2,230 

2,180 

2,100 

2,060 

2,160

2,200 

2,120 

2,240 

2,010 

1,830

1,880 

2,040 

2.O5O 

1,830 

1,720

1,790 

1,730 

1,670 

1,860 

1,910

1,910 

2,010 

2,030 

1,990 

1,960 

2,000

Minimum Mean

1,910 2,039 

1,600 1,820 

1.32O 1,634

1,060 4,652

1,230 1,488 

1,370 1,589 

1,680 1,925 

1,840 3,567 

3,130 6,799 

7,870 13,220 

2,440 4,433 

1,670 2,024 

1,590 1,866

1,230 3,532

base.

Sept.

2,030 

2,010 

1,980 

1,910 

1.76O

1,680 

1,67O 

1,720 

1,600 

1,590

1,67O 

1,640 

1,780 

1,910 

2,080

2,100 

1,820 

1,620 

1,700 

! 2,080

2,290 

2,320 

1,970 

2,040 

2,020

1,780 

1,790 

1,860 

1,880 

1,670

Runoff in 

acre-feet

125,400 

108,300 

100,500

3,368,000

91,480 

88,260 

118,400 

212,300 

418,100 

786,500 

272,600 

124,500 

111,000

2,557,000

3omput

Soaring Fork at Glenwood Springs.

207364 O - 52 - 3
24 COLORADO RIVER MAIN STEM

Colorado River near Cisco, Utah

Location.--Water-stage recorder, lat. 38°49', long. 109°18', in NW£ sec. 17, T. 23 S., R.

 5J4 E., 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 square miles.

Records available.--November 1914 to September 1917, October 1922 to September 1950.

October 1913 to November 1914 at site 31 miles downstream, published as Colorado River 

near Moab; records equivalent. Also calendar year estimates 1895-1910 and monthly estimates January 1911 to September 1913 and October 1917 to September 1922.

Average discharge.--32 years (1913-17, 1922-50), 8,161 second-feet.

Extremes.--Maximum discharge during year, 24,400 second-feet June 4 (gage height, 9.33

 feet); minimum, 1,150 second-feet Sept. 7, 8 (gage height, 1.02 feet).

1914-17, 1922-50: Maximum discharge, 76,800 second-feet June 19, 1917 (gage height, 

19.7 feet); minimum recorded, 558 second-feet July 21, 1934 (gage height, 0.44 foot).

Maximum 'discharge known, about 125,000 second-feet July 4, 1884, from flood record 

at Fruita, Colo.

Remarks. Records excellent except those for period of ice effect, which are fair. Diversions above station for irrigation and power, including transmountain diversions. 

Records of chemical analyses, water temperatures, and sediment loads for the water 

year 1950 are given in Water-Supply Paper 1189.

Revisions (water years). W 918: 1913, 1937.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

3,410 

3,170 

3,210 

3,170 

3,100

2,900 

3,120 

3,280 

3,990 

3,280

3,160 

3,320 

3,490 

3,680 

3,490

3,530 

3,550 

3,580 

7,200 

4,390

4,130 

4,050 

4,110 

3,790 

3,760

3,700 

3,660 

3,660 

3,660 

3,570 

3,640

Nov.

3,790 

3,620 

3,510 

3,580 

3,790

3,740 

3,680 

3,620 

3,410 

3,530

3,760 

3,790 

3,850 

3,640 

3,470

3,430 

3,550 

3,700 

3,640 

3,600

3,490 

3,380 

3,250 

3,250 

3,280

3,450 

3,530 

3,260 

3,160 

3,120

Dec.

3,070 

3,170 

3,070 

2,870 

2,940

2,890 

2,660 

2,660 

3,170 

3,340

3,510 

3,340 

3,030 

2,440 

2', 250

2,140 

2,490 

3,070 

3,140 

3,430

3,170 

2,990 

3,100 

3,030 

2,940

2,710 

2,850 

*2,730 

2,800 

2,780 

3,100

Jan.

3,190 

3,450 

3,200 

2,990 

2,700

2,500 

2,300 

2,260 

2,400 

*2,50ff

2,700 

2,900 

2,820 

3,000 

3,190

3,200 

3,300 

3,400 

3,400 

3,400

3,300 

3,500 

3,950 

4,300 

4,170

*4,030 

3,900 

3,750 

3,600 

3,4.00 

*3,500

Feb.

3,800 

3,700 

3,500 

3,350 

3,450

3,600 

*3,700 

3,800 

4,OOO 

4,290

4,250 

4,000 

3,800 

3,600 

*3,400

3,400 

3,400 

3,500 

3,600 

3,600

3,500 

*3,350 

3,250 

3,210 

3,320

3,400 

3,620 

*3,870

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ma

lendar year 1949

ter year 1949-50

Mar.

3,990 

3,680 

3,790 

3,720 

3,620

3,550 

3,300 

3,300 

3,190 

3,510

3,700 

3,550 

3,680 

3,320 

3,190

3,160 

3,400 

3,210 

3,260 

3,280

3,170 

2,900 

3,100 

3,260 

3,260

3,410 

3,570 

3,640 

3,280 

3,320 

3,050

Apr.

3,010 

3,160 

3,450 

5,060 

5,470'

5,100 

5,250 

6,400 

8,700 

10,400

8,750 

7,230 

6,740 

6,980 

8,000

9,220 

8,950 

8,750 

9,480 

10,800

10,900 

12,000 

14,100 

15,800 

15,900

13,800 

12,900 

12,800 

11,900 

11,700

Secondfoot-days

113,750 

105,870 

90,880

3,195,790

100,200 

101,260 

105,360 

272,700 

385,060 

561,000 

174,740 

55,170 

69,420

2,135,410

May

10,700 

8,920 

8,610 

10,600 

12,400

11,800 

10,500 

8,950 

7,920 

6,690

6,270 

6,220 

6,620 

7,850 

8,610

11,200 

12,600 

14,000 

15,500 

15,700

15,500 

16,100 

17,900 

19,700 

21,300

20,200 

17,500 

15,100 

14,100 

13,000 

13,000

Maximum

7,200 

3,850 

3,510

53,200

4,300 

4,290 

3,990 

15,900 

21,300 

23,300 

9,990 

2,340 

4,250

23,300

June

15,700 

19,700 

22,200 

23,300 

20 , 900

18,800 

20,800 

22,800 

21,600 

18,800

18,400 

19,800 

21,900 

23,100 

22,400

21,900 

21,800 

22,500 

22,000 

19,700

17,500 

16,800 

17,100 

15,500 

14,300

14,300 

13,300 

12,300 

11,200 

10,600

July

9,990 

9,420 

8,810 

8,190 

7,610

7,000 

6,400 

7,850 

7,300 

7,230

7,430 

7,230 

7,360 

6,710 

5,990

5,720 

5,390 

5,080 

4,450 

5,040

4,740 

4,390 

3,780 

3,340 

2,870

2,540 

2,390 

2,570 

2,590 

2,760 

2,570

Minimum

2,900 

3,120 

2,140

2,140

2,260 

3,210 

2,900 

3,010 

6,220 

10,600 

2,390 

1,190 

1,260

1,190

Aug.

2,340 

2,070 

1,930 

2,030 

2,030

2,030 

2,060 

2,010 

1,960 

1,930

1,930 

2,140 

2,040 

1,990 

2,010

1,750 

1,650 

1,680 

1,680 

1,540

1,320 

1,310 

1,240 

1,190 

1,460

1,590 

1,540 

1,670 

1,750 

1,650 

1,650

Mean

3,669 

3,529 

2,932

8,756

3,232 

3,616 

3,399 

9,090 

12,420 

18,700 

5,637 

1,780 

2,314

5,850

Sept.

1,650 

1,640 

1,600 

1,510 

1,460

1,340 

1,260 

1,270 

1,500 

1,510

1,500 

1,680 

1,750 

2,090 

2,490

2,570 

2,350 

2,070 

3,010 

4,250

3,470 

3,570 

3,550 

3,140 

3,170

3,080 

2,780 

2,760 

2,760 

2,640

Runoff In 

acre-feet

225,600 

210,000 

180,300

6,338,000

198,700 

200,800 

209,000 

540,900 

763,800 

1,113,000 

346,600 

109,400 

137,700

4,236,000

Peak discharge (base, 26,000 sec. -ft.). No peak above base.

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Jan. 3 tc
COLORADO RIVER MAIN STEM

Colorado River at Hlt/e, Utah

Location. Water-stage recorder, lat. 37°50', long. 110°30', In sec. 35, T. 34 S., R. 13 

ii., at Hlte, 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 square miles.

Records available.--August 1947 to September 1950.

Extremes. Maximum discharge during'year, 55,200 second-fe^t June 5 (gage height, 12.39 

feet); minimum, 3,160 second-feet Jan. 9.

1947-50: Maximum discharge, 88,200 second-feet June 21, 1949 (gage height, 15.67 

feet); minimum recorded, 2,580 second-feet Sept. 13, 1948 (gage height, 0.19 foot), 

but was probably less during period of no gage-height record when water was below 

intake.

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

Fair. Records of water temperatures and sediment loads for the water year 1950 are 

given in Water-Supply Paper 1189.

Discharge, In second-feet, water year October 1949 to September 195O

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

3O 

31

Oct.

6,210 

7,980 

7,320 

6,740 

6,860

6,530 

5,940 

5,680 

5,770 

6,060

6,900 

7,000 

6,630 

8,210 

7,750

7,270 

6,650 

6,630 

8,590 

10,600

13,200 

9,360 

8,780 

8,980 

8,640

,980 

,710 

,490 

,400 

,400 

7,400

Nov.

7,300 

7,300 

7,470 

7,380 

7,170

7,150 

7,250 

7,230 

7,110 

6,960

6,700 

6,630 

6,920 

6,980 

6,900

6,860 

6,680 

6,510 

6,510 

6,720

6,700 

6,650 

6,490 

6,310 

6,230

6,190 

6,230 

6,350 

6,530 

6,250

Dec.

6,080 

5,980 

5,900 

6,020 

5,980

5,880 

5,850 

3,830 

5,680 

5,570

5,750 

6,040 

6,110 

6,040 

5,470

4,690 

3,980 

3,420 

3,450 

4,050

4,520 

4,710 

4,580 

4,150 

3,910

4,090 

4,320 

4,180 

3,980 

3,980 

3,970

Jan.

4,08O 

4,440 

4,760 

5,130 

4,940

4, 530 

4,120 

3,320 

3,280 

3,420

3,520 

3,990 

4,240 

4,710 

4,960

4,790 

4,890 

5,050 

4,860 

4,910

5,430 

5,750 

5,720 

6,020 

6,190

6,170 

5,920 

5,830 

5,470 

5,340 

5,240

Feb.

5,480 

5,870 

5,560 

5,220 

5,150

5,290 

5,380 

5,410 

5,880 

6,090

6,630 

6,650 

6,310 

6,020 

5,920

5,940 

a5,900 

a5,900 

5,940 

6,250

6,370 

6,330 

6,490 

6,390 

6,270

6,230 

6,370 

6,530

Month

Ooto 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ....... ,\ ..............

Mar.

6,760 

7,OOO 

7,150 

7,080 

7,210

8,070 

13,100 

13,300 

12,600

12,500

12,600 

12,600 

12,800 

11,400 

10,600

9,990 

9,100 

8,420 

8,520 

8,210

8,070 

8,090 

7,960 

7,620 

7,660

8,140 

8,280 

8,560 

8,660 

8,490 

7,960

Apr.

,730 

,380 

,270 

,130 

,040

8,090 

9,180 

9,160 

12,000 

13,700

16,300 

15,800 

14,300 

18,900 

18,600

17,100 

17,300 

18,100 

19,700 

23,200 *

23,500 

24,300 

25,600 

28,000 

30,300

30,700 

30,800 

31,300 

30, 600 

27,500

Secondfoot-days

235,660 

203,660 

154,160

5,773,270

151,020 

167,770 

288,500 

550,580 

885,400 

1,350,600 

579,810 

191,080 

151,450

4,909,690

Peak discharge (base, 40,000 sec. -ft.). May 26 (11:45

May

25,30O 

23,800 

21,000 

20,800 

21,100

22,600 

23,200 

22,600 

21,600 

20,800

19,600 

17,600 

16,60O 

16,000 

16,100

16,800 

18,500 

22,800 

27,900 

34, 100

37,000 

37,700 

38,000 

39,300 

40,400

45,000 

46,100 

44,600 

43,600 

43,700 

40,400

Maximum

13,200 

7,470 

6,110

87,200

6,190 

6,650 

13,300 

31,300 

46,100 

54,400 

31,500 

8,020 

7,980

54, 400

June

37,900 

39 , 400 

46,000 

52,200 

54, 400

50,800 

48,000 

48,800 

52,300 

51,600

47,900 

45,600 

45,100 

46,900 

49 , 000

48,500 

47,400 

47,300 

48,000 

48,100

46,600 

44,300 

42,700 

41,900 

40,700

38,200 

37,100 

36,000 

34,500 

33,400

July

31,500 

29 , 500 

27,400 

a25,000 

a23,000

a23,000 

a24,000 

23,000 

30,500 

25,200

23,400 

22,400 

22,400 

21,800 

20,900

19,400 

18,200 

17,300 

16,700 

15,600

14,700 

14,300 

13,300 

12,300 

11,300

10,400 

9,620 

8,980 

8,440 

8,180 

8,090

Minimum

5,680 

6,190 

3,420

2,700

3,280 

5,150 

6,760 

7,040 

16,000 

33,400 

8,090 

4,360 

3,450

3,280

p.m.) 47,000 sec. -ft.

Aug.

8,020 

7,930 

7,690 

7,420 

7,270

7,640 

7,930 

7,770 

7,580 

7,250

6,960 

6,610 

6,390 

6,410 

6,470

6,190 

6,170 

5,980 

5,660 

5,450

5,340 

5,190 

5,120 

4,980 

4,840

4,580 

4,450 

4,580 

4,470 

4,360 

4,380

Mean

7,602 

6,789 

4,973

15,820

4,872 

5,992 

9,306 

18,350 

28,560 

45,020 

18,700 

6,164 

5,048

13,450

; June 5 (1

Sept.

4,320 

4,160 

4,120 

4,040 

3,950

3,800 

3,750 

3,700 

3,680 

3,460

3,450 

3,680 

3,780 

3,790 

4,010

4,040 

4,390 

4,640 

5,520 

6,170

7,690 

7,980 

6,820 

6,860 

6,= 920

6,630 

6,610 

6,590 

6,470 

6,430

Runoff In 

acre-feet

467,400 

404,000 

305,800

11,452,000

299,500 

332,800 

572,200 

1,092,000 

1,756,000 

2,679,000 

1,150,000 

379,000 

300,400

9,738,000

:30 p.m.)

55,2OO sec.-ft7; July 9 (9 a.m.) 40,800 sec.-ft.

a No gage-height record; discharge computed on basis of 1 discharge measurement and records for 

stations near Cisco, Utah, and at Lees Ferry, Arlz.
26 COLORADO RIVER MAIN STEM

Colorado River at Lees Ferry, Ariz.

Location. Water-stage recorder, lat. 36°51'45", long. 111°36'15", in NE^SE^ sec. 13, T. 

4U N., R. 7 E., at head of Marble Gorge at Lees Ferry, Just upstream from Parla 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. Datum of gage is 3,106.16 feet 

above mean sea level, datum of 1929.

Drainage area. 107,900 square miles.

Records available.--June 1921 to September 1950. Also, calendar year estimates 1895-1910, 

 ma montniy 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).

Average discharge. 29 years (1921-50), 17,420 second-feet.

Extremes --Maximum discharge during year, 60,600 second-feet June 6 (gage height, 14.81 

reet); minimum daily, 3,600 second-feet Jan. 11.

1921-50; Maximum discharge, 220,000 second-feet June 18, 1921 (gage height, 26.5 

feet, from floodmarks), from rating curve extended above 120,000 second-feet on basis of 

rating curve for station near Grand Canyon; minimum, 750 second-feet Dec. 27, 1924 (gage 

height, 4.2 feet).

Maximum discharge known, about 300,000 second-feet July 7, 1884 (gage height, 31.5 

feet, present site and datum, from floodmark at mouth of Paria River], from rating 

curve extended above 120,000 second-feet, verified at 220,000 second-feet by comparison 

with rating curve for station near Grand Canyon.

Remarks. Records excellent except those for periods of ice effect, which are fair. Diversions above station for irrigation. Records of chemical analyses, water temperatures, 

and sediment loads for the water year 1950 are given in Water-Supply Paper lltid.

Revisions (water years). W 859: 1921-23. (See also Records available.)

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

5,460 

5,400 

5,600 

7,600 

7,380

6,870 

6,600 

6,640 

6,440 

6,150

5,840 

5,840 

6,310 

7,110 

6,470

7,520 

8,430 

8,280 

9,080 

11,500

12,200 

15,700 

12,000 

10,200 

10,400

10,200 

9,800 

9,280 

9,040 

8,810 

8,470

Nov.

8,470 

8,470 

8,360 

8,210 

8,390

8,320 

8,130 

8,130 

8,240 

8,240

8,210 

8,130 

7,950 

7, 770 

7,950

8,060 

8,210 

8,240 

7,920 

* 7,770

7,740 

7,840 

7,810 

7,700 

7,600

7,460 

7,280 

7., 210 

7,210 

7,350

Dec.

7,520 

7,350 

7,210 

7,040 

6,980

6,980 

7,040 

6,810 

6,570 

6,540

6.64O 

6,540 

6,640 

6,940 

6,980

6,910 

6,280 

5,430 

4,840 

4,290

4,130 

4,590 

5,350 

*5,690 

5,600

b5,120 

b4,720 

b4,490 

*b4,720 

b4,920 

b4,660

Jan.

*4,640 

4,620 

4,890 

b5,400 

b5,400

b5,300 

b5,000 

b4,700 

b4,400 

b4,000

b3,600 

*3,660 

*b3,990 

b4,590 

4,970

*b5,460 

5,870 

5,810 

5,960 

*6,310

6,410 

6,210 

6,570 

7,010 

7,210

7,700 

8,170 

7,740 

7,150 

6,980 

6,640

Peb.

6,410 

6,440 

6,470 

6,840 

6,600

6,470 

6,440 

6,500 

6,600 

6,670

7,420 

7,920 

8,390 

8,280 

7,660

7,460 

7,150 

7,040 

7,150 

6,980

7,010 

7,250 

7,460 

g7,660 

87,770

87,770 

87,700 

7,460

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mfl v

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

7,490 

7,950 

8,210 

8,770 

9,040

9,000 

9,000 

12,200 

15,700 

15,100

13,900 

14,400 

14,600 

14,600 

13,600

12,700 

11,800 

10,600 

9,720 

9,240

9,440 

8,890 

8,620 

8,620 

8,660

9,040 

8,850 

8,970 

9,200 

9,760 

9,930

Apr.

9,560 

8,970 

8,580 

8,320 

8,130

8,100 

9,040 

10,200 

11,300 

12,000

16,500 

19,800 

19,500 

17,100 

20,100

21,700 

20,400 

20,100 

21,100 

21,700

26,000 

26,800 

28,000 

20,000 

32,900

34,700 

36,500 

36,000 

36,000 

34,300

Secondfoot-days

256,620 

238,370 

185,520

7,363,290

176,360 

200,970 

327,600 

613,400 

993,500 

1,501,700 

694,390 

212,610 

166,370

5,567,410

May

31,600 

30,000 

28,000 

25,600 

24,900

25,300 

26,800 

27,200 

26,000 

24,500

23,400 

22,100 

20,100 

19,200 

18,300

18,300 

19,200 

20,400 

25,300 

30,000

37,400 

40,200 

41,700 

30,100 

46,100

48,100 

51,800 

51,800 

50,800 

48,700 

47,600

Maximum

15,700 

8,470 

7,520

115,300

8,170 

8,390 

15,700 

36,500 

51,800 

58,300 

36,500 

9,560 

9,600

58,300

June

44,100 

41,700 

44,600 

49,700 

56,100

58,300 

56,100 

54,000 

56,100 

58,300

56,100 

51,800 

50,800 

50,800 

54,000

55,000 

55,000 

52,900 

52,900 

52,900

51,800 

50,200 

48,100 

48,100 

47,100

45,100 

41,700 

40,700 

39,800 

37,900

July

36,500 

34,300 

32,900 

30,400 

28,800

27,200 

27,200 

28,400 

27,200 

35,600

29,600 

25,600 

25,600 

24,900 

24,500

23 , 800 

22,100 

20,800 

21,100 

19,500

18,300 

16,800 

16,200 

15,700 

14,400

13,400 

12,200 

11,300 

10,400 

9,970 

9,720

Minimum

5,400 

7,210 

4,130

1,510

36,00 

6,410 

7,490 

8,100 

18,300 

37,900 

9,720 

4,560 

3,620

3,600

Aug.

9,560 

9,400 

9,400 

9,000 

8,580

8,280 

7,920 

7,920 

8,130 

8,020

7,840 

7,880 

7,460 

7,150 

6,740

6,540 

6,600 

6,600 

6,340 

6,240

5,900 

5,660 

5,630 

5,520 

5,550

5,120 

4,970 

4,820 

4,640 

4,560 

4,640

Mean

 8,278 

7,946 

5,985

20.1701

5,689 

7,178 

10,570 

20,450 

32,050 

50,060 

22,400 

6,858 

5,546

15,250

Sept.

4,520 

4,460 

4,490 

4,420

4,270

4,250 

4,320 

4,290 

4,290 

3,920

3,880 

3,850 

3,680 

3,620 

3,810

4,130 

4,170 

4,340 

4,390 

5,100

7,740 

9,000 

9,480 

9,600 

8,320

7,920 

7,810 

7,600 

7,320 

7,380

Runoff In 

acre-feet

509,000 

472,800 

368,000

14,600,000

349,800 

398,600 

649,800 

1,217,000 

1,971,000 

2,979,000 

1,377,000 

421,700 

330,000

11,040,000

Peak discharge (base, 55.000 sec.-ft.). June 6 (11:30 a.m.) 60,600 sec.-ft.; Apr. 27 (2 p.m.) 

7,400 sec.-rt.; July 10 l&:30 a.m.) 40,700 sec.-ft. 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice. 

g Computed from graph based on twice-daily staff-gage readings.
COLORADO RIVER MAIN STEM 27 

Transmountain diversions from Colorado River Basin above Lees Perry

In Colorado the following twenty-one tunnels or ditches, which are equipped with waterstage recorders, are the total transmountain diversions from the Colorado River Basin. 

Records furnished by State engineer.

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. 74 

W., to Big Thompson River in the Platte River Basin.

Alva B. Adams tunnel diverts water from Shadow Mountain Reservoir, in sec. 4, T. 3 N., 

R. 75 W., to Wind River (tributary of 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. 2 S., R. 75 W., and Berthoud Pass, to West Fork Clear Creek in the Platte 

River Basin.

Moffat water tunnel diverts water from tributaries of Fraser 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. 2 S., R. 75 W., right bank of 

Fraser River in sec. 14, T. 2 S., 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 S., R. 76 W., and head gate on left 

bank of McQueary Creek in sec. 16, T. 3 S., 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. 7 S., R. 77 W., and Boreas Pass, to Tarryall Creek in the Platte River 

Basin.

Fremont Pass ditch diverts water from tributaries of Tenmlle Creek in sec. 2 and sec. 

3, T. 8 S. , R. 79 W., to East Fork Arkansas River.

Columbine ditch diverts water from tributaries of Eagle River in sec. 6, T. 8 S., R. 79 

W., and Fremont Pass, to East Fork Arkansas River.

Ewing ditch diverts water from left bank of Eagle River in sec. 11, T. 8 S., R. 80 W., 

to Tennessee Rork Arkansas River.

Wurtz ditch diverts water from tributaries of Eagle River between the head gate in sec. 

32, T. VS., 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. US., R. 83 W., sec. 11, T. US., 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. 9 

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 Fork Arkansas River.

Tarbell ditch diverts water from a tributary of Cochetopa Creek in sec. 12, T. 43 N., 

R. IE., to tributary of Saguache Creek in the Rio Grande Basin.

Tabor ditch diverts water from 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 loca-ted in NWij sec. 4, T, 38 N., 

R. 1 W., and SW£ 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. 4W., 

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.

In Wyoming in the Green River Basin, Continental Divide ditch diverts water from Little 

Sandy Creek in 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 second-feet 

but no discharge record is available.
28 COLORADO RIVER MAIN STEM 

Transmountain diversions from Colorado River Basin above Lees Ferry Continued

In Utah the following seventeen tunnels or ditches, which are equipped with water-stage 

recorders, are the total transmountain diversions from the Colorado River Basin.

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 SE¥ sec. 34, 

T. 5 S., R. 6 E.

Strawberry tunnel whose west portal is in SW£ sec. 34, T. 7 S., R. 6 E., diverts water 

from Strawberry Reservoir on Strawberry River to Diamond Fork in the Jordan River Basin. 

Records furnished by Spanish Fork Water Users' Association and include tunnel seepage.

Upper 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.

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.

Fairview ditch diverts water from tributaries of San Rafael River and Price River to 

San Pitch River in Sevier River Basin. Gage is located in SE^- 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 Fork 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 Hafael 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 Hafael River 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 Hafael River to San Pitch River. 

Gage is located in SEtr sec. 10, T. 16 S., R. 5 E.

Cedar Creek tunnel diverts water from tributary of San Hafael 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 NWi|- sec. 32, T. 16 S., R. 5 E.

John August ditch diverts water from tributary of San Rafael Hiver 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'sw£ sec. 23, T. 17 S., R. 4 E.

Ephraim tunnel diverts water from tributary of San Rafael River to San Pitch Hiver. 

;e 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 SWj sec. 2, T. 17 S., H. 4 E.

There are no transmountain diversions from the Colorado River above Lees Ferry in the 

States of New Mexico and Arizona.

Transmountain diversions, In acre-feet, water year October 1949 to September 195O

Gag

Name

Colorado 

Grand River ditch. . .

Alva B. Adams tunnel 

Berthoud Pass ditch. 

Moffat water tunnel. 

Jones Pass tunnel... 

Boreas Pass ditch. . . 

Fremont Pass ditch. . 

Columbine ditch. ....

Twin Lakes tunnel... 

Busk-Ivanhoe tunnel. 

Larkspur ditch. .....

Treasure Pass ditch. 

Pledra Pass ditch. . . 

Squaw Pass ditch. . . .

Raber-Lohr ditch. . . . 

Total In Colorado. . .

Oct.

0

0 

0 

1,330 

0 

0 

0 

0

0

137 

133 

0

0 

0 

0 

0

0 

1,620

Nov.

0

0 

0 

5 

0 

0 

0 

0 

0

0

255 

0 

0

0 

" 0 0 

0

0 

260

Dec.

0 

0

0 

0 

0 

0 

0 

0 

0 

0

0

165 

0 

0 

0

0 

0 

0 

0

0 

165

Jan.

0 

0

0 

0 

0 

0 

0 

0 

0 

0

0

147 

0 

0 

0

0

0 

0 

0 

0

0 

147

Feb.

0 

0

0 

0 

0 

0 

0 

0 

0 

0

0

110 

0 

0 

0

0

0 

0 

0 

0

0 

110

Mar.

O

0 

0 

0 

0 

0 

0 

0

0

122 

0 

0

0 

0 

0 

0

0 

122

Apr.

0

0 

0 

0 

0 

0 

0 

0

224 

45 

0

0 

0 

0

0 

269

May

297

4,920 

0 

4,200 

300 

0 

0 

0

5,540 

551 

20

0 

0 

0 

0

C 

16,530

June

10,990

11,940 

275 

15,870 

5,460 

53 

0 

1,060

21,340 

2,290 

4

69 

0 

135

621 

72,280

July

4,350

7,870 

215 

4,880 

2,650 

16 

0 

208

5,680 

387 

0

0 

0 

73

214 

27,030

Aug.

524

1,170 

0 

1,940 

624 

0 

0 

0

817 

0 

0

0 

0 

0 

48

104 

5,260

Sept.

0

369 

0 

1,340 

56 

0 

0 

0

343 

0 

0

0 

0 

0 

0

37 

2,140

Water 

year

16,160

26,270 

490 

29,560 

9,090 

69 

0 

1,270

34,880 

3,410 

24

69 

0 

208 

361

976 

125,900
COLORADO RIVER MAIN STEM 29

Transmountain diversions from Colorado River Basin above Lees Ferry Continued

Transmountaln diversions, In acre-feet, water year October 1949 to September 1950

Name

Utah 

Strawberry River & Willow Creek ditches

Upper Hobble Creek ditch 

Lower Hobble Creek ditch

Total In Utah. ..........

Oct.

145

0 

0

15

3,180

Nov.

0 

298

O 

0

0

6

358

Dec.

0

O 

0

0

340

Jan.

0 

307

0 

0

0

0

331

Feb.

0 

278

0 

0

0

0

301

Mar.

0 

338

0 

0

0

0

371

Apr.

0 

357

0 

0

0

469

May

117

8 

35

2

4,980

June

1,020

324 

235

140

97

438

22,060

July

825

23 

24

10

39

16,570

Aug.

387

0 

2

18

19,640

Sept.

235

0 

0

6

O

0

8

18

O

0

0

12,720

Water 

year

2,730

355 

296 

1,490

133

158

163

206

314

266

7

698

81,330

Note. There Is one diversion from the Great Basin to the Colorado River Basin. This diversion is 

Tropic and East Pork Canal which diverts water from East Pork Sevier River to tributary of Paria 

River. Gage is located in SW^- sec. 17, T. 36 S., R. 3 W. Figures of diversion, In acre-feet, for the 

1949 water year are as follows: April, 138; May, 1,130; June, 1,110; July, 612; August, 65O; September, 263; total for water year, 3,910.
30 COLORADO RIVER MAIN STEM

Colorado River near Grand Canyon, Ariz.

Location.--Two water-stage recorders, lat. 36°05'55", long. 112°05'30", 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 S67 

miles upstream from Hoover Dam. Datum of gages Is 2,418.7 feet above mean sea level, 

preliminary datum of 1929.

Drainage area. 137,800 square miles.

Records available. October 1922 to September 1950. Gage-height records collected ij miles 

downstream, 1908-13, published in reports of U. S. Weather Bureau.

Average discharge.--28 years, 17,750 second-feet.

Extremes.--Maximum discharge during year, 58,400 second-feet June 6 {gage height, 20.55 

feet); minimum, 3,770 second-feet Jan, 13.

1922-50: Maximum discharge, 127,000 second-feet July 2, 1927 (gage height, 29.25 

feet); minimum, 700 second-feet Dec. 28, 1924 (gage height, -0.70 foot).

Maximum discharge known, 300,000 second-feet about July 8, 1884 (computed on basis 

of flood studies at Lees Ferry). Crest discharge of flood of June 19, 1921, 220,000 

second-feet (gage height, 37.5 feet, from floodmarks), from rating curve extended above 

120,000 second-feet by logarithmic plotting.

Remarks. Records excellent. Diversions above station for irrigation. Records of chemical 

analyses, water temperatures, and sediment loads for the water year 1950 are given in 

Water-Supply Paper 1189.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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.

5,470 

5,730 

5,660 

5,860 

7,700

7,520 

7,000 

6,820 

6,820 

6,610

6,420 

6,120 

6,210 

6,700 

7,310

6,790 

7,910 

8,450 

8,930 

10,900

12,700 

13,200 

15,300 

11,600 

10,400

10,600 

10,500 

9,860 

9,360 

9,140 

8,920

Nov.

8,740 

8,690 

8,660 

8,580 

8,630

8,820 

8,680 

8,420 

8,420 

8,550

8,570 

8,420 

8,360 

8,200 

8,090

8,340 

8,420 

8,340 

8,250 

8,000

,860 

,840 

,960 

,940 

,850

,720 

,490 

,360 

,300 

7,380

Dec.

7,480 

7,550 

,360 

,180 

,030

,96O 

,980 

,000 

,910 

,790

,700 

,730 

,650 

,700 

,000

,100 

,000 

,400 

,610 

,120

,600 

,490 

4,990 

5,530 

5,770

5,770 

5,320 

4,830 

4,590 

4,860 

5,090

Jan.

5.OOO 

5,000 

4,950 

5,020 

5,470

5,530 

5,400 

5,180 

4,840 

4,580

4,150 

3,850 

3,990 

4,180 

4,810

5,300 

5,880 

6,240 

6,120 

6,050

6,380 

6,340 

6,380 

6,910 

7,380

7,460 

7,920 

8,100 

7,730 

7,280 

7,170

Feb.

6,890 

6,690 

6,580 

6,650 

6,970

6,800

6,560 

6,440 

6,580 

6,660

6,910 

7,6 0 

8,550 

9,050 

8,850

8,230 

7,790 

7,460 

7,340 

7,310

7,210 

7,250 

7,640 

8,000 

8,100

8,280 

8,260 

8,080

Month

Ooto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

7,940 

8,090 

9,260 

9,430 

9,880

9,820 

9,600 

9,650 

14,000 

15,900

14 , 900 

14,300 

14,800 

14,700 

14,700

13,200 

12,300 

11,600 

10,700 

9,930

9,550 

9,570 

9,110 

9,060 

9,O9o

9,230 

9,330 

9,090 

9,400 

9,500 

10,000

Apr.

10,000

9,550 

9.OOO 

8,690 

8,630

8,660 

8,630 

9,550 

10,700 

11,500

13,200 

17,500 

20,900 

18,900 

17,300

22,100 

21,500 

20,300 

20,700 

21,500

23,500 

26,300 

27,4OO 

28,600 

31,600

33,600 

35,200 

35,700 

35,700 

34,400

Secondfoot-days

262,510 

245,870 

192,090

7,371,250

180,590 

208,790 

337,630 

600,810 

978,500 

1,474,700 

706,400 

223,750 

172,970

5,584,610

May

32,400 

29,700 

28,800 

26,800 

25,100

25,000 

26,000 

27,700 

27,000 

25 , 600

24,300 

23,000 

21,300 

19,400 

18,400

18,000 

18,400 

19,400 

21,300 

27,000

34,000 

40,100 

41,500 

41,900 

43,800

46,200 

48,800 

50,800 

50,300 

48,800 

47,700

Maximum

15,300 

8,820 

7,550

110,400

8,100 

9,050 

15,900 

35,700 

50,800 

56,100 

36,500 

9,640 

9,940

56,100

June

45,300 

42,400 

42,400 

46,200 

51,800

56,100 

54,500 

51,800 

51,800 

55,000

56,100 

52,400 

49,800 

49,800 

51,300

53,400 

54,000 

52,400 

51,800 

52,400

52,900 

51,300 

48 , 800 

48,200 

46,700

45,300 

42,400 

40,500 

39,600 

38,300

July

36,500 

34,800 

32,800 

30,400 

28,600

27,000 

26,000 

26,800 

26,700 

31,700

32,400 

27,400 

25,300 

25,300 

24,500

24,000 

23,000 

21,600 

22,700 

21,300

19,300 

18.OOO 

16,800 

16,600 

15,300

14,200 

13,200 

12,200 

11,400 

10,600 

10,000

Minimum

5,470 

7,300 

4,490

2,000

3,850 

6,440 

7,940 

8,630 

18,000 

38,300 

10,000 

4,910 

3,890

3,850

Aug.

9,640 

9,450 

9,250 

9,230 

8,930

8,58O 

8,310 

8,000 

8,030 

8,250

8,210 

8,210 

8,210 

7,670 

7,380

6,970 

6,830 

6,870 

6,790 

6,580

6,470 

6,170 

5,970 

5,960 

5,960

5,900 

5,510 

5,350 

5,190 

4,970 

4,910

Mean

8,468 

8,196 

6,196

20,200

5,825 

7,457 

1O.89O 

20,030 

31,560 

49,160 

22,790 

7,218 

5,766

15 , 300

Sept.

4,950 

4,790 

4,760 

4,750 

4,690

4,590 

4,590 

4,700 

4,700 

4,700

4,280 

4,190 

4,160 

3,980 

3,890

4,060 

4,330 

4,410 

4,550 

4,590

5,650 

8,580 

9,360 

9,940 

9,590

8,490 

8,210 

8,080 

7,800 

7,610

Runoff In 

acre-feet

520,700 

487,700 

381 , 000

14,620,000

358,200 

414,100 

669,700 

1,192,000 

1,941,000 

2,925,000 

1,401,000 

443,800 

343,100

11,080,000

Peak discharge (base, 55.000 see.-ft.). Apr. 28 (3 a.m.) 37,000 sec.-ft.; June 6 (10 p.m.) 58,400 

sec.-ft.; July 10 111 p.m.) 40,500 sec.-ft.
COLORADO RIVER MAIN STEM 31 

Lake Mead at Hoover Dam, Ariz.-Nev.

Location. Water-stage indicator, lat. 36°00<59", long. 114°44'10", in SW£ sec. 3, T. 30 

«., K. 23 W. Gila and Salt River meridian, in center of Hoover Dam on Colorado River. 

Datum of gage is mean sea level, powerhouse datum, which is datum in use locally and 

originally based on adjustment of 1912; or 0.55 foot above mean sea level, datum of 

1929, leveling of 1935; or 0.43 foot above mean sea level, datum of 1929, leveling of 

1940. Capacity table referenced to powerhouse datum and sediment volumes to datum of 

1929, leveling of 1935.

Drainage area. 167,800 square miles.

Records available. February 1935 to September 1950.

Extremes.--Maximum contents during year, 22,081,000 acre-feet Oct. 1 (gage height, 1,186.65 

 feet); minimum, 17,477,000 acre-feet Apr. 13 (gage height, 1,149.95 feet).

1935-50: Maximum contents, 27,790,000 acre-feet July 29, 30, 1941 (gage height,

1,220.45 feet); minimum (since 1940), 16,218,000 acre-feet Apr. 25, 1947 (gage height,

1,133.91 feet).

Remarks. Reservoir is formed by concrete arch-gravity type dam; storage began Feb. 1, 

HJ33; dam completed Mar. 1, 1936. New capacity table based on 1948-49 sedimentation 

survey put into use Oct. 1, 1949. Total capacity, 31,047,000 acre-feet, consisting 

of the following: dead storage, 2,620,000 acre-feet below gage height 895.0 feet (gate 

sills in outlet towers): usable contents, 27,207,000 acre-feet between gage heights 

895.0 and 1,221.4 feet [top of automatic spillway gates in raised position); and uncontrolled storage, 1,220,000 acre-feet between gage heights 1,221.4 and 1,229.0 feet. 

Reservoir is used to store water for irrigation, municipal water supply, power development, and for flood control. Figures given herein represent usable contents. Table 

of sediment volumes gives sediment accumulation since storage began Feb. 1, 1935. 

Records of chemical analyses and water temperatures for the water year 1950 are given 

in Water-Supply Paper 1189.

Cooperation. Records collected and prepared in cooperation with Bureau of Reclamation. 

Revisions (water years).--W 899: 1935-39.

Capacity table (elevations, in feet, and contents, in thousands of acre-feet)

(Based on 1948-49 sedimentation survey- by Bureau of Reclamation,

Geological Survey, and Navy Department)

S95 0 1,000 4,642 1,100 12,232 1,150 17,483 1,200 23,963

920 86S 1,020 5,874 1,110 13,201 1,160 18,663 1,210 25,445

940 1,663 1,040 7,239 1,120 14,210 1,170 19,892 1,220 26,986

960 2,552 1,060 8,748 1,130 15,261 1,180 21,186 1,229 28,427

980 3,539 1,080 10,414 1,140 16,351 1,190 22,543

Elevations, In feet, and sediment volume, In thousands of acre-feet, 

based on sedimentation survey of 1948-49

650 0 800 463.8 1,050 953

680 21.4 850 524 1,100 1,100

700 73.0 900 609 1,150 1,276

730 207.2 950 705 1,200 1,418

760 354.0 1,000 824 1,230 1,426
COLORADO RIVER MAIN STEM

Usable contents at 12 p.m., in thousands of acre-feet, of Lake Mead at Hoover Dam, 

water year October 1949 to September 1950

Ariz.-Nev.,

Day

1

2

3

4

5

6

7

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.

22,081

22,057

23,030

21,996

21,959

21,921

21,888

21,858

21,845

21,816

21,785

21,756

21,728

21,694

21,667

"21,654

21,613

21,575

21,554

21,523

21,494

21,480

21,477

21,468

21,451

21,431

21,411

21,389

21,375

21,370

21,344

Nov.

21,322

21 , 300

21,275

21,254

21 , 235

21,227

21,198

21,173

21,144

21,131

21,127

21,127

21,127

21,109

21,091

21,070

21,045

21,020

21,008

20,997

20,972

20,9*4

20,917

20,912

20,888

20,872

20,864

20,838

20,809

20,782

-

Dec.

20,752

20,722

20,694

20,674

20,647

20,616

20,582

20,547

20,515

20,486

20,449

20,429

20,395

20,364

20,331

20,300

20,277

20,264

20,236

20,204

20,170

20,137

20,10O

20,081.

20,065

20,052

20,022

19,990

19,957

19,921

19,900

Jan.

19,888

19,862

19,837

19,800

19,760

19,722

19,696

19,677

19,650

19,615

19,574

19,538

19,499

19,461

19,437

19,406

19,373

19,344

19,315

19,283

19,260

19,240

19,205

19,175

19,142

19,108

19,078

19,044

19,016

18,987

18,953

Feb.

18,924

18,883

18,851

18,830

18,812

18,781

18,755

18,731

18,703

18,674

18,655

18,644

18,616

18,587

18,562

18,535

18,509

18 , 491

18,475

18,449

18,424

18,396

18,367

18,342

18,333

18,316

18,293

18,268

-

-

-

Mar.

18,242

18,212

18,181

18,164

18,147

18,127

18,099

18,073

18,043

18,019

18,015

18,015

17,994

17,976

17,961

17,943

17,931

17,912

17,909

17,893

17,874

17,858

17,834

17,803

17,793

17,783

17,766

17,747

17,728

17,708

17,686

Apr.

17,683

17,678

17,662

17,634

17,612

17,590

17,564

17,539

17,542

17,526

17,510

17,493

17,477

17,488

17,497

17,506

17,511

17,513

17,514

17,513

17,509

17,520

17,546

17,562

17,576

17,593

17,616

17,648

17,683

17,730

May

17,759

17,778

17,793

17,811

17,821

17,841

17,862

17*879

17,892

17,908

17,921

17,933

17,948

17,963

17,960

17,960

17,958

17,950

17,949

17,957

17,984

18,009

18,042

18,080

18,121

18,164

18,222

18,293

18 , 360

18,436

18,491

June

18,541

18,591

18,645

18,705

18,759

18,808

18,889

18,965

19,032

19,105

19,194

19,269

19,336

19,400

19,462

19,524

19,601

19,683

19,748

19,811

19,870

19,954

20,015

20,079

20,140

20,210

20,264

20,313

20,354

20,397

-

July

20,442

20,488

20,532

20,567

20,581

20,615

20,638

20,655

20,688

20,705

20,730

20,757

20,775

20,782

20,799

20,816

20,826

20,838

20,842

20,849

20,860

20,851

20,855

20,862

20,858

20,851

20,843

20,833

20,824

20,825

20,811

Aug.

20,801

20,783

20,769

20,752

20,740

20,739

20,721

20,700

20,683

20,677

20,651

20,639

20,643

20,626

20,611

20,594

20,576

20,555

20,542

20,540

20,523

20,496

20,473

20,452

20,430

20,418

20,411

20,390

20,368

20,345

20,320

Sept.

20,297

20,283

20,266

20,266

20,248

20,225

20,196

20,172

20,155

20,147

20,121

20,093

20,069

20,038

20,011

19,994

19,978

19,954

19,931

19,903

19,874

19,848

19,830

19,831

19,817

19,804

19,790

19,770

19,741

19,738

Monthly gage height and contents, water year October 1949 to September 1950

Date

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

Calendar year 1949 ........

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

Gage height 

(feet)t

1,170.06

-

1,152.13

1,168.77

Contents 

(acre-feet)

21,344,000

20,782,000

19,900,000

-

18,953,000

18,268,000

17,686,000

17,730,000

18,491,000

20,811,000

20,320,000

19,738,000

Change in contents 

during month 

(acre-feet)

_

-766,000

-562,000

-882,000

i+647,000

-947,000

-685,000

-582,000

+44,000

+761,000

+1,906,000

+414,000

-491,000

-582,000

-2,372,000

 t Gage height at 12 p.m.

t Based on new capacity table.
COLORADO RIVER MAIN STEM d' 

Colorado River below Hoover Dam, Ariz.-Nev.

Location.--Water-stage recorder, lat. 36°00'15", long. 114°44'35", in SW^NE^ sec. 10, T. 

' 3D ¥7, R. 23 W. Gila and Salt River meridian, or NW^NE^ sec. 32, T. 22 S., R. 65 E. 

Mount Diablo meridian, 1 mile downstream from Hoover Dam. Datum of gage is 600.16 

feet above mean sea level, approximate datum of 1929, leveling of 1950, used locally 

as 600.00 feet as originally determined.

Drainage area.--167,800 square miles at Hoover Dam.

Records available.--April 1934 to September 1950. Record of diversions to Henderson area 

(iu mlies northwest of Boulder City, Nev.), April 1942 to September 1950.

Average discharge.--16 years (1934-50), 14,700 second-feet (not adjusted for storage in 

Lajce Mead).

Extremes.--Maximum discharge during year, 30,200 second-feet Mar. 13 (gage height, 50.50 

feet); minimum, 4,280 second-feet Nov. 13 (gage height, 39.97 feet); minimum daily, 

7,130 second-feet Sept. 10.

1935-50: Maximum discharge, 51,200 second-feet Feb. 13, 1939 (gage height, 54.96 

feet); no 'flow Feb. 10, 1935.

Remarks. Records excellent. Flow completely regulated by Hoover Dam since Feb. 1, 1935 

(see preceding page). Diversions above Hoover Dam for irrigation and industrial uses. 

Divers-oii by pumping from Lake Mead, 6 miles above Hoover Dam, to Henderson area in 

Nevada (10 miles northwest of Boulder City) for municipal and industrial use began 

Apr. V, 1942. Records of chemical analyses and water temperatures for the water year 

1950 are given in Water-Supply Paper 1189.

Cooperation. Record of diversions to Henderson, Nev., area furnished by Bureau of 

Keciamation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

19,900 

15,300 

20,000 

20,600 

21,000

21,100 

21,000 

18,000 

12,800 

20,100

20,600 

20,000 

20,600 

20,900 

18,100

14,100 

20,600 

21,900 

22,400 

22,500

21,600 

17,300 

13,200 

 20,000 

20,600

20,500 

20,800 

19,900 

15,800 

12,500 

19,300

Nov.

19,900 

19,600 

20,200 

19,400 

16,700

12,300 

19,400 

20,300 

20,400

14,800

11,000 

9,290 

7,430 

17,700 

17,200

18,600 

19,600 

19,900 

14,300 

12,800

20,800 

21,000 

20,200 

12,300 

17,200

16,100 

12,600 

21,000 

21,500 

21,100

Dec.

22,100 

21,900 

19,900 

16,900 

21,100

23,100 

23,000 

23,600 

23,000 

21,700

19,200 

23,000 

22,000 

21,600 

21,200

21,600 

16,400 

13,200 

21,000 

22,300

22,500 

22,200 

20,800 

15,400 

12,000

12,400 

20,900 

21,700 

21,900 

21,500 

15.200

Jan.

11,400 

13,200 

21,800 

23,100 

23,000

23,400 

16,700 

12,800 

22,000 

23,200

23,400 

23,400 

23,400 

20,300 

16,200

20,800 

19,900 

20,600 

21,900 

22,100

18,800 

14,800 

22,700 

22,200 

23,300

24,300 

24,700 

23,600 

19,000 

23,700 

24,300

Month

Octc 

Move 

Dece

Ci

Jam 

Febi 

Marc 

Aprj

June 

Julj 

Augi 

Sept

WE

lendar year 194J ..........

....

ember. ....................

ter -year 1949-50. .........

Se 

foe

Feb.

24,700 

24,300 

22,800 

18,600 

15,300

22,000 

21,400 

21,100 

21,300 

21,200

17,400 

14,600 

21,000 

21,700 

22,100

22,700 

23,000 

18,100 

16,500 

19,600

20,40.0 

21,200 

21,700 

21,800

17,200

15,100 

21,800 

22,000

t-days

593,000 

515,120

624,100

6,839,990

644,000 

570,600 

628,100 

549,200 

564,900 

483,800 

495,000 

439, PSO 

415,330

6,522,810

Mar

22,800 

23,200 

23,200 

18,100 

15,000

22,000 

23,100 

22,800 

23,100

23,600

19,400 

15,900 

23,600 

23,600 

23,600

23,600 

23,000 

19,000 

13,200 

20,100

19,600 

19,500 

20,100 

21,000 

17,000

12,600 

20,800 

19,900 

18,200 

18,300 

19,200

Apr.

14,400 

12,60>"i 

19,600 

20,900 

20,600

20,100 

20,000 

16,600 

 12,000 

20,100

19,900 

19,600 

20,500 

19,500 

14,900

13,000 

20,200 

20,500 

20,400 

20,700

21,300 

16,600 

12,800 

20,300 

20,900

21,300 

21,100 

20,700 

15,500 

12,600

May

20, 

20, 

21, 

21, 

20,

16, 

12, 

17, 

19, 

18,

18,

18, 

16, 

12, 

20,

19, 

18, 

19, 

20, 

16,

13, 

19, 

20, 

21, 

20,

21, 

16, 

12, 

18, 

12, 

19,

500 

900 

000 

400 

800

100 

700 

600 

100 

000

800 

500 

000 

400 

100

300 

500 

700 

800 

400

100 

900 

800 

100 

700

100 

600 

600 

000 

600 

800

June

20,200 

17,400 

14,700 

10,600 

17,900

17,900 

18,100 

17,100 

16,600 

13,300

10,700 

16,200 

16,900 

16,800 

17,100

17,100 

13,200 

11,200 

17,000 

17,800

18,700 

18,400 

18,100 

13,200 

10,200

16,400 

17,400 

17,700 

17,900 

18,000

Discharge in second-feet

Maximum Minimum

22,500 12,500 

21,500 7,430 

23,600 12,000

25,000 7,430

24,700 11,400 

24,700 14,600 

23,600 12,600 

21,300 12,000 

21,400 12,400 

20,200 10,200 

18,700 10,300 

16,100 7,410 

17,700 7,130

24,700 7,130

Mean

19,130 

17,170 

20,130

18,740

20,770 

20,380

20,260 

18,310 

18,220 

16,130 

15,970 

14,180 

13,840

17,870

July

14,700 

10,400 

15,800 

10,400 

17,400

18,700 

18,600 

15,700 

10,600 

17,000

17,300 

17,700 

17,900 

18,500 

15,600

11,800 

17,800 

18,400 

18,200 

18,100

18,000 

15,500 

11,800 

17,800 

18,200

18,000 

17,500 

17,500 

14,100 

10,300 

15,700

Aug.

15,400 

15,800 

15,900 

15,800 

11,800

8,540 

15,300 

16,100 

16,000 

16,000

15,500 

11,300 

7,990 

15,600 

15,400

15,500 

15,900 

15,900 

12,400 

8,720

15,500 

15,800 

15,600 

15,500 

15,700

11,200 

7,410 

14,800 

15,700 

15,900 

15,700

Runoff in 

acre-feet

1,176,000 

1,022,000 

1,238,000

13,570,000

1,277,000 

1,132,000 

1,246,000 

1,089,000 

1,120,000 

959,600 

981,800 

872,100 

823,800

12,940,000

Sept.

15,800 

11,400 

7,700 

8,000 

15,000

15,700 

16,800 

16,200 

10,900 

7,130

15,500 

15,500 

16,000 

16,700 

15,800

11,000 

8,060 

14,300 

15,400 

16,800

17,200 

17,700 

13,600 

7,640 

15,100

15,800 

16,200 

16,000 

15,900 

10,500

Diversions t 

Henderson, 

Nev. , area 

(acre-feet )

396 

214 

209

4,511

184 

250 

307 

422 

539 

709 

691 

717 

661

5,299
34 COLORADO RIVER MAIN STEM

Lake Mohave at Davis Dam, Ariz.-Nev.

Location. Water-stage recorder, lat. 35°ll'50", Ions. 114°34'00", In SW^SW^ sec. 18, T. 

21 w., R. 21 W. Gila and Salt River meridian, on forebay structure on Arizona side of 

Davis Dam on Colorado River, 29 miles west of Kingman, Arizona, and 67 miles downstream 

from Hoover Dam. Datum of gage is mean sea level, datum of 1929.

Drainage area. 169,300 square miles at Davis Dam, of which 1,520 square miles is below 

Hoover uam.

Records available. January to September 1950.

Extremes. Maximum contents during period, 433,000 acre-feet Sept. 30 (elevation, 585.10 

reet); no storage prior to Jan. 17.

Remarks.--Reservoir is formed by earth and rock fill dam; storage began Jan. 17, 1950. 

Usable contents, 1,809,800 acre feet (neglecting slope on lake) between elevations 

533.39 feet (lowest point of penstock outlet) and 647.0 feet (top of spillway gates). 

Dead storage, 8,530 acre feet below elevation 533.39 feet. 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.

Capacity table, October 1949 (elevation, in feet,

and contents, in acre-feet)

(Prepared by Bureau of Reclamation from topography 

by the Bureau and the Geological Survey)

533.39

536

540

545

550

2,980

8,890

20,480

39,360

555

560

565

570

580

68,050

108,200

158,400

217,500

354,800

590

600

620

640

647

513,200

693,600

1,117,700

1,617,500

1,809,800

Usable contents at 12 p.m., in thousands of acre-feet, January to September 1950

Day

1

2

3

4

5

6

7

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.

_

_

-

-

-

_

-

_

-

-

_

_

_

_

-

_

4.7

10.8

31.5

61.4

83.5

93.3

104.5

122.3

139.1

155.6

169.7

182.1

185.8

194.8

205.5

Feb.

215.6

223.3

228.0

226.8

219.1

219.4

222.5

225.9

227.1

227.7

226.1

216.8

213.7

217.6

221.3

225.5

230.7

229.2

222.5

219.7

220.9

221.5

224.2

227.2

224.4

214.9

214.4

219.9

_

-

Mar.

225.2

230.3

235.7

232.9

222.8

223.9

227.1

231.1

235.0

239.0

240.0

231.1

229.6

235.7

240.7

244.9

247.5

243.5

233.2

226.9

225.5

223.8

222.5

222.5

218.7

209.5

206.5

210.1

208.9

207.1

206.7

Apr.

201.7

192.7

203.7

216.1

226.3

234.2

240.7

241.4

238.8

239.0

244.5

248.4

252.1

257.4

254.2

247.1

246.1

252.3

256.9

262.0

266.8

265.0

256.5

256.0

259.5

264.0

268.4

273.8

267.1

256.3

May

253.2

256.5

261.8

265.4

266.7

263.0

253.0

247.5

247.5

247.7

245.9

246.6

243.2

234.6

233.3

236.8

237.4

239.2

243.5

242.4

234.6

233.3

- 237.4

243.3

249.2

252.0

248.8

240.6

236.7

249.3

248.6

June

254.6

254.8

246.4

231.2

227.1

232.4

235.4

237.7

239.0

236.3

228.2

225.1

228.8

233.1

237.4

242.0

240.7

234.6

234.0

239.8

245.7

251.2

255.8

254.7

246.2

243.3

246.9

250.4

254.7

259.1

-

July

258.3

250.2

246.2

240.9

240.1

244.1

249.9

254.6

248.8

248.4

251.5

256.0

260.4

265.2

266.8

262.3

260.4

265.8

271.5

274.9

278.4

280.8

272.8

279.7

282.9

286.8

289.5

290.4

288.4

276.8

295.4

Aug.

324.5

352.0

380.6

407.8

414.0

409.6

411.1

417.6

420.6

423.0

421.1

413.2

398.9

392.6

391.1

388.4

386.2

384.3

377.6

364.3

356.2

354.3

352.1

365.2

363.8

354.5

338.3

329.9

328.0

327.2

325.2

Sept.

324.5

316.7

303.2

287.0

281.0

283.1

285.8

292.0

293.1

286.1

289.0

298.2

306.9

317.7

326.2

327.8

323.3

336.4

356.4

365.0

373.6

384.8

388.6

379.2

377.0

398.1

421.6

424.8

428.4

424.5

-

Monthly elevation and contents, January to September 1950

Date

Mar . 31 ....................

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

Elevation 

(feet)t

533.39 

569.04 

570.19 

569.14 

572.99 

572.41 

573.20 

575.87 

577.97 

584.56

-

Contents 

(acre-feet)

0 

205,500 

219,900 

206,700 

256,300 

248,600 

259,100 

295 , 400 

325 , 200 

424,500

-

Change In contents 

during month 

(acre-feet)

+205,500 

+14,400 

-13,200 

+49,600 

-7,700 

+10,500 

+36 , 300 

+29,800 

+99 , 300

+424,500

t Elevations at 12 p.m. except on Jan. 17 when dead storage was filled at 

12:30 a.m.-
COLORADO RIVER MAIN' STEM 35

Colorado River below Davis Dam, Arlz.-Nev.

Location.--Water-stage recorder, lat. 35°11 I 30", long. 114°34 l 15n ) in SE^NE^ sec. 1. T. 

 3ii S., R. 66 E.'Mount Diablo meridian, half a mile downstream from Davis Dam, 29 miles

(revised) west of Kingman, Ariz., and 68 miles downstream from Hoover Dam. Datum of

gage is 500.00 feet above mean sea level, datum of 1989.

Drainage area.--169,300 square miles.

Records available. March 1949 to September 1950.

Extremes.--Maximum discharge during year, 25,400 second-feet Jan. 14; maximum gage height, 

14.8'J feet Oct. 20; no flow at Davis Dam parts of several days July to September, when 

gates in dam were closed.

1949-50: Maximum discharge recorded, 26,400 second-feet Apr. 15, 1949; maximum gage 

height recorded, 16.08 feet Mar. 18, 1949, site then in use; minimum discharge, that of 

July to September 1950.

Remarks. Records excellent. Plow regulated by Hoover Dam and, since Jan. 17, 1950, by 

Davis Dam (see preceding pages). Many diversions above station for irrigation and industrial uses.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

6 

7 

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.

21,400 

20,100 

15,900 

19,800 

2O.60O

21.20O 

21,000 

20,9OO 

18,000 

13,300

19,400 

20,700 

20,100 

20,800 

20,800

18,300 

14,500 

19,900 

21,600 

22,200

21,900 

21,100 

17,500 

13,500 

19,100

20,200 

20,300 

20,400 

19,700 

16,100 

12,600

18,500 

19,400 

19,300 

19,700 

19,300

16,700 

12,600 

18,700 

20,000 

20,000

15,200 

11,100 

9,170 

7,720 

16,700

17,300 

18,800 

19,600 

19,800 

15,500

13,200 

20,100 

21,000 

20,300 

13,200

16,800 

16,400 

13,000 

20,400 

21,400

21,300 

22,200 

21.9OO 

20,100 

17,000

21,200 

22,800 

23,000 

23,200 

22,800

21,500. 

19,500 

22,400 

21,800 

21,300

21,100 

21,200 

17,100 

14,100 

20,700

22,200 

22,300 

22,000 

20,700 

16,000

12,400 

12,500 

20,000 

21,300 

21,600 

21,000

16,100 

12,100 

13,500 

21,100 

22,800

23.OOO 

22,800 

17,600 

13,700 

21,000

22,900 

22,900 

23,000 

23,200 

20,800

15,900 

17,700 

17,100 

12,300 

7,570

7,570 

8,660 

9,490 

11,200 

21,800

14,300 

15,800 

16,900 

17,700 

17,900 

18,600

19,300 

19,800 

20,200 

20,500 

20,200

19,700 

20,100 

20,200 

20,300 

20,400

20,400 

20,000 

19,300 

19,600 

19,800

20,200 

20,600 

20,800 

20,600 

20,100

20,100 

20,100 

20,200 

20,400 

20,500

20,100 

19,600 

19,800

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year

ter year 1949-50 .......................

2O.10O 

20.5OO 

20,800 

21,000 

20,600

20,000 

20,200 

20,500 

20,700 

21,000

21,200 

21,000 

20,400 

20,700 

21,100

21,300 

21,500 

21,500 

21,200 

20,300

20,200 

20,200 

20,100 

20,000 

20,100

19,700 

18,800 

19,000 

19,000 

19,000 

18,900

18,800 

18,200 

12,700 

12,400 

15,200

15,800 

16,300 

16,600 

16,600 

16,200

16,800 

17,300 

17,500 

17,600 

17,700

17,500 

17,200 

17,500 

17,600 

17,900

18,300 

18,800 

18,600 

18,200 

18,300

18,500 

18,700 

19,200 

19,700 

19,400

Secondfoot-days

592,900 

510,890 

628,200

-

517,990 

562,900 

630,600 

521,100 

564,420 

476,800 

474,920 

418,310 

363,480

6,262,510

May

18,9OO 

19,000 

19,200 

19,300 

19,500

19,500 

19,200 

18,700 

18,500 

18,600

18,600 

18,600 

18,600 

18,300 

17,800

18.OOO 

18,100 

18,200 

18,300 

18,500

18,300 

18,000 

18,100 

18,400 

18,500

18,800 

18,800 

18,600 

18,300 

7,920 

17,300

Maximum

22,200 

21,400 

23,200

-

23,200 

20,800 

21,500 

19,700 

19,500 

19,500 

16,300 

17,300 

16,800

23,200

June

17,500 

18,400 

19,500 

19,000 

17,300

16,100 

16,200 

16,300 

16,200 

15,900

15,700 

15,400 

15,000 

14,500 

14,700

14,800 

14,900 

14,800 

14,600 

14,700

14,900 

15,100 

15,400 

15,900 

15,700

15,400 

15,500 

15,700 

15,800 

15,900

July

16,000 

16,000 

15,600 

15,600 

15,400

15,500 

15,500 

15,400 

15 , 400 

15,200

15,300 

15,400 

15,500 

15,600 

15,700

15,700 

15,600 

15,700 

15,800 

15,800

16,000 

16,100 

16,000 

12,100 

16,100

16,100 

16,300 

16,300 

16,300 

16,200 

5,720

Minimum

12,600 

7,720 

12,400

-

7.5701 

19,300 

18,800 

12,400 

7,920 

14,500 

5,720 

285 

3,000

285

Aug.

989

1,010 

285 

516 

8,060

11,100 

11,200 

12,700 

14,200 

15,200

15,600 

16,600 

16,300 

16,200 

16,300

16,800 

16,800 

16,700 

16,900 

17,100

16,900 

16,800 

16,800 

8,750 

16,800

17,000 

17,300 

16,900 

16,900 

16,800 

16,800

Mean

19,130 

17,030 

20,260

-

16,710 

2B.100 

20,340 

17,370 

18,210 

15,890 

15,320 

13,490 

12,120

17,160

Sept.

16,800 

16,800 

16,500 

16,100 

15.50O

15,20O 

15,200 

14,000 

12,000 

12,000

11,500 

10,800 

11,000 

11,100 

11,300

11,300 

11,300 

5,340 

5,970 

11,90O

12,000 

12,100 

13,000 

13,500 

13,400

5,070 

3,000 

13,900 

14,000 

13,900

Runoff in 

acre-feet

1,176,000 

1,013,000 

1,246,000

-

1,027,000 

1,116,000 

1,251,000 

1,034,000 

1,120,000 

945,700 

942,000 

829,700 

721,000

12,420,000
36 COLORADO RIVER MAIN STEM

Colorado River at Needles, Calif.

Location. Water-stage recorder, lat. 34°51'05", long. 114°36<25", in SE^SE-f sec. 19, T. 

an., R. 23 E. San Bernardino meridian, at Needles, 18 miles upstream from gaging 

station near Topock, Ariz., 31 miles downstream from Davis Dam, and 98 miles downstream 

from Hoover Dam. Datum of gage is 466.23 feet above mean sea level, datum of 1929; 

gage readings have been reduced to elevation above mean sea level.

Drainage area. 170, 600 square miles.

Records available. --April 1931 to September 1950 (elevations only).

Extremes . Maximum elevation during year, 474.55 feet Oct. 20; minimum, 466.11 feet Aug. 4, 

1931-50: Maximum elevation, 475.77 feet Nov. 30, 1944; minimum, that of Aug. 4, 1950.

Remarks. --Flow regulated by Hoover and Davis Dams (see p. 33). 

Revisions (water years ) . W 1119: 1931-47.

Elevation, In feet, water* year October 1949 to September 1950

Day

1

2

3

4

5

6

7

8

9

10

11

IE

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

474.23

474.20

473.72

473.73

474.27

474.33

474.28

474.21

474.01

473.28

473 . 32

474.16

474.21

474.21

474.26

474.10

473.51

473.54

474.35

474. 41

474.25

473.86

473.55

473.08

473.30

474.04

474.07

474.06

473.95

473.55

472.93

Nov.

473.21

473.94

473.92

473.90

473 . 83

473.48

472.83

473 . 08

473.88

473.94

473.35

472.33

471.65

471 . 00

471.89

473.22

473.45

473.69

473.65

473.25

472.73

473.02

473.91

473.74

473.02

472.67

473.21

472.74

473 . 04

473.97

-

Dec.

473.84

473.92

473.89

473 . 66

473.39

473.51

474.11

473.99

474.08

474.09

473.92

473.60

473.77

473.61

473.26

473.16

473.12

472.86

472 . 53

473.07

473.50

473.53

473.49

473.31

472.76

472.18

471.73

472.62

473.13

473.15

473.13

Jan.

472.65

471.68

471.96

472.88

473.23

473.38

473.40

472.99

472.57

472.89

473.47

473.58

473.66

473.75

473.52

472.89

472.83

473.05

472.26

471.19

470.42

470.67

470.97

471.28

471.76

472.05

472.31

472.52

472.70

472.64

472.77

Feb.

472.94

472.95

472.91

472.96

472.99

472.98

473.06

473 . 15

473.14

473.17

473.23

473.19

473.14

473.16

473.22

473.25

473.34

473.34

473.25

473.13

473.08

473 . 05

473.04

473.05

473.09

483.09

473.03

473.06

_

-

Mar.

473.07

473 . 09

473.17

473.28

473.37

473.33

473.25

473.21

473.15

473.10

473.10

473.01

472.76

472.66

472.68

g472.73

g472.78

g472.83

g472.88

g472.83

g472.78

g472.78

g472.73

g472.73

g472.73

g472.73

472.62

472.51

472.62

472 . 66

472.72

Apr.

472.72

472.70

472.26

471.13

472.16

472.29

472.41

472.43

472.43

472.40

472.45

472.58

472 T63

472.71

472.82

472.85

472.81

472.82

472.87

472.93

473.00

473.16

473.20

473.21

473.19

473.23

473.29

473.32

473.43

473.35

May

473.24

473 . 19

473 . 20

473.19

473.20

473.25

473.25

473.22

473.16

473.17

473.24

473 . 25

473.31

473.27

473.18

473.10

473.12

473.14

473.17

473.22

473.25

473.19

473.17

473.25

473.31

473.37

473 . 45

473.40

473.33

472.29

471.02

June

473.15

473.17

473.45

473.40

473.21

472.63

472 . 64

472.68

472.68

472.58

472.54

472.46

472.40

472.20

472.18

472.21

472.26

472.26

472.21

472.20

472.26

472.28

472.32

472.45

472.49

472.43

472.38

472.43

472.48

472.53

-

July

472.57

472 . 59

472.52

472.44

472.40

472.40

472.43

472.37

472.39

472.36

472.34

472.37

472.41

472.45

472.50

472.52

472.50

472.47

472.52

472.58

472.60

472.65

472.67

472.19

471 . 89

472 . 75

472.77

472 . 80

472.80

472.80

471.89

Aug.

467.33

466.77

466.61

466.40

467.91

471.59

471.92

472.13

472.49

472.83

472.92

473.16

473.25

473.19

473.17

473.29

473.34

473.35

473.35

473.43

473.45

473.40

473.39

472 . 89

471 . 79

473.44

473.57

473.53

473.46

473.45

473.42

Sept.

473.38

473.36

473.33

473.25

473.13

472.98

472.94

472.93

472.16

471.97

471.92

471.60

471.57

471.61

471.64

471.69

471.72

471.27

468.70

470.04

471.87

471.97

472'. 05

472.42

472.42

471.82

467.93

470.23

472.54

472.60

-

g Computed from graph -baaed on once-daily gage readings, recorded range in stage, and records for 

Colorado River at Topock.
COLORADO RIVER MAIN STEM 37

Colorado River near Topock, Ariz.

Location. Water-stage recorder, lat. 34 0 41'15", long. 114°27'45", in NW£ sec. 13, T. 15 

N., ti. 21 W. Gila and Salt River meridian, in Mohave Canyon, 3 miles downstream from 

Topock, 39.5 miles upstream from Parker Dam, and 49 miles downstream from Davis Dam. 

Datum of gage is 423.02 feet above mean sea level, datum of 1929. Gage readings have 

been reduced to elevations above mean sea level. Auxiliary water-stage recorder at 

highway bridge at Topock, 2.7 miles upstream, used in determining fall.

Drainage area. 172,300 square miles.

Records available. January 1917 to September 1950.

Average discharge.--17 years (1917-34), 20,260 second-feet; 16 years (1934-50), 14,210 

second-feet (not adjusted for storage in Lake Mead and Lake Mohave).

Extremes.--Maximum daily discharge during year, 22,800 second-feet Dec. 11; maximum

elevatibn, 453.65 feet Jan. 15; minimum daily discharge, 803 second-feet Aug. 5; minimum elevation, 445.11 feet Aug. 6.

1917-34: Maximum discharge probably exceeded 200,000 second-feet June 22, 1921; 

minimum, 1,480 second-feet Aug. 17, 1934.

1934-50: Maximum discharge, 35,700 second-feet Jan. 29, 1942; maximum elevation, 

that of Jan. 15, 1950; minimum discharge, 375 second-feet Feb. 14, 1935; minimum daily, 

422 second-feet Feb. 14, 1935.

Discharge of about 300,000 second-feet (based on determination at Lees Ferry gaging 

station) occurred about July 10, 1884. Discharge in excess of 400,000 second-feet 

(estimated) probably occurred within the period 1857-68 and most likely in 1862.

Bemarks. Records excellent. Discharge computed by using fall as determined by auxiliary 

water-stage recorder as a factor. 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 feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Dot.

452.13

452.19

452.08

451.47

451.40

451.73

451.99

452.16

452.27

451.95

45O.97

451.04

451.56

451.75

451.91

452.02

451.36

451.14

451.30

452.02

452.52

452.74

452.60

452.01

451. 2O

451.23

451.72

451.99

452.13

452.05

451.48

Nov.

450.72

450.98

451.45

451.69

451.33

451.32

451.44

450.59

450.95

451.55

451.90

451.26

450.06

449.03

443.30

449.36

450.24

450.79

451.23

451.43

45O.3S

450.26

450.32

451.61

451.73

450.33

450.60

450.64

450.18

450.83

-

Dec.

451.70

452.07

452.35

452.50

452.30

451.34

452.05

452.56

452.33

-453.03

453.15

453. OS

452.36

453.02

453.16

453.15

453.03

452.92

452.30

451.51

451.97

452.57

452.92

453. O7

452.93

452.29

451.54

451.23

451.90

452.36

452. 7E

Jan.

452.35

452.40

451.49

451.35

452.04

452.72

'453.15

453.34

452.79

452.16

452.52

452.96

453.23

453.54

453.62

453.36

452.72

452.66

452.45

451.72

450.79

450.30

450.09

449.79

449.71

449.79

450.02

450.47

450.90

451.19

451.35

Feb.

451.55

451.78

451.93

452.06

452.17

452.15

452.06

452.07

452.15

452.23

452.26

452.27

452.27

452-. 14

452. OS

452.11

452.15

452.24

452.32

452.36

452.30

452.30

452.33

452.34

452.41

452.47

452.48

452.33

_

_

-

Mar.

452.41

452.47

452.53

452.64

452.73

452.76

452.74

452.74

452.84

452.92

453.00

453.05

453.08

453.02

452.99

453.01

453.03

453.14

453.20

453.13

453.O2

452.99

452.95

452.95

452.91

452.96

452.91

452.75

452.63

452. 70

452.70

Apr.

452.65

452.66

452.61

451.77

451.48

451.53

451.59

451.73

451. SI

451. S9

451.34

451.90

452.00

451.99

452.07

452.17

452.19

452.10

452.04

452.03

452.15

452.23

452.32

452.38

452.33

452.40

452.49

452.57

452.67

452.83

Hay

452.85

452.79

452.80

452.32

452.33

452.92

452.99

453.02

452.99

.453.OO

452.99

452.97

452.96

452.93

453.02

452.96

452.96

452.95

45E.94

452.97

453.03

453.04

453.03

453.04

453.04

453.06

453.12

453.13

453.19

453.12

452.13

June

452.31

452.63

452. 3O

453.04

453.14

453. O3

452.72

452.64

452.60

452.60

452.60

452.59

452.59

452.50

452.39

452.35

452.31

452.32

452.34

452.32

452.33

452.34

452.40

452.38

452.33

452.39

452.35

452.34

452.33

452.37

Muly

452.43

452.52

452.56

452.53

452.51

452.43

452.49

452.53

452.52

452.51

452.43

452.40

452.39

452.43

452.47

452.54

452.56

452.53

452.51

452.50

452.53

452.55

452.62

452.66

452.19

452.29

452.48

452.59

452.66

452.75

452.80

Aug.

451.62

450.04

448.81

447.48

446.04

445.35

447.54

449.06

449.67

450.17

450.63

450. S3

451.01

451.06

450.97

450.89

450.95

450.93

451.00

451.00

451.05

451.09

451.11

451.16

45O.71

450.16

451.01

451.43

451.55

451.57

451.65

Sept.

451.67

451.70

451.76

451.79

451.79

451. 7S

451.74

451.77

451.31

451.48

451.23

451.16

450.99

450.93

450.39

450.83

450.33

450.75

45O.35

449.24

449.22

449.33

450.15

-450.36

450.62

450.77

450.29

448.48

448.74

450.07
38 COLORADO RI7ER MAIN STEM

Discharge, In second-feet, of Colorado River near Topock, Arlz. 

water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oot.

20,400 

20,600 

20,000 

17,600 

17,900

191,100 

20,000 

20,600 

20,600 

19,100

15,800 

17,200 

18,900 

19,400 

19,800

20,100 

18,800 

16,300 

17,900 

20,400

21,900 

22,300 

21,500 

19,300 

15,600

17,400 

19,200 

20,200 

20,600 

19,900 

17,500

Nov.

14,500 

16,700 

18,300 

18,800 

19,500

19,400 

17,700 

14,900 

16,800 

18,900

19,900 

17.10C 

13,200 

11,000 

9,790

13, 700 

16,000 

17,500 

18,600 

18,900

17,000 

15,300 

17,800 

18,800 

19,000

15,SOC 

16,800 

16,800 

15,500 

18,OOC

Dec.

20,100 

20,700 

21,400 

21,700 

20,600

19,000 

19,800 

21,600 

22,300 

22,600

22,800 

22,300 

21,300 

22,000 

22,200

22,000 

21,600 

20,900 

18,400 

16,300

18,800 

20,800 

21,600 

21,800 

20,700

17,700 

14,400 

14,100 

17,900 

19,800 

20,900

Jan.

20,500 

17,600 

14,400 

14,800 

19,400

21,200 

22,200 

21,flOO 

19,500 

17,400

19,800 

21,300 

22,200 

22,200 

22,100

21,000 

18,600 

18,800 

17,400 

13,600

9,680 

8,400 

8,280 

8,400 

9,380

10,800 

13,400 

15,200 

16,700 

17,500 

17,600

Feb. ,

17,800 

18,300 

18,800 

19,600 

20,000

19,400 

19,500 

19,700 

20,100 

20,200

20,300 

20,200 

19,900 

19,700 

19,600

19,500 

19,600 

19,800 

20,300 

20,400

20,400 

20,000 

19,800 

19,700 

19,900

20,000 

19,800 

19,400

Month

Oot 

Nov 

Dec

C

Jan 

Peb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

slendar year 19

ater year 1949-50 ......................

Mar.

19,300 

19,500 

19,700 

20,000 

20,200

20,200 

20,000 

20,000 

20,200 

20,500

20,700 

20,900 

20,800 

20,600 

20,600

20,700 

20,700 

20,800 

20,700 

20,700

20,500 

20,300 

20,300 

20,200 

20,100

20,200 

19,900 

19,400 

19,300 

19,300 

19,100

Apr.

19,100 

18,900 

18,400 

14,600 

13,800

14,500 

15,100 

15,800 

16,100 

16,400

16,200 

16,500 

16,700 

16,900 

17,300

17,400 

17,400 

17,200 

16,900 

17,200

17,300 

17,600 

17,800 

18,100 

17,»00

17,900 

18,000 

18,100 

18,600 

18,900

Secondfoot -day 3

595,900 

502,090 

628,100

6,716,090

521,140 

551,700 

625,400 

512,600 

558,600 

457,600 

472,000 

381,985 

363,390

6,170,505

Hay

18,700 

18,700 

18,400 

18,700 

18,800

18,700 

18,900 

18,700 

18,600 

18,500

18,400 

18,300 

18,300 

18,100 

18,100

17,9OO 

17,800 

17,800 

17,700 

17,900

18,000 

17,800 

17,600 

17,600 

17,700

17,9OO 

18,000 

18,100 

18,100 

17,800 

13,000

Maximum

22,300 

19,900 

22,800

23,400

22,200 

20,400 

20,900 

19,100 

18,900 

18,100 

16,300 

16,600 

16,600

22,800

June

14,500 

15,800 

17,OC(0 

18,000 

18,100

17,300 

16, 3JOO 

16,000 

15*900 

15,700

15,400 

15,200 

15,000 

14,800 

14,300

14,200 

14,200 

14,300 

14,200 

14,200

14,100 

14,200 

14,400 

14,600 

15,000

15,100 

14,900 

14,900 

14,900 

15,100

July

15,200 

15,400 

15,400 

15,200 

15,100

15,100 

15,100 

15.100 

15,000 

15,000

14,800 

14,700 

14,700 

14,900 

14,900

15,100 

15,200 

15,200 

15,200 

15,300

15,300 

15,400 

15,700 

15,700 

13,800

14,700 

15,500 

15,800 

16,000 

16,300 

16,200

Minimum

15,600 

9,790 

14,100

9,790

8,280 

17,800 

19,100 

13,800 

13,000 

14,100 

13,800 

803 

4,840

803

Aug.

10,100 

4,650 

2,940 

1,380 

803

822 

3,990 

8,100 

10,400 

12,300

14,000 

14,800 

15,600 

16,000 

15,700

15,500 

15,700 

15,800 

15,800 

15,900

16,100 

16,100 

16,100 

16,200 

14,300

12,100 

15,100 

16,300 

16,400 

16,400 

16,600

Mean

19,220 

16,740 

20,26Q

18,400

16,810 

19,700 

20,170 

17,090 

18,020 

15, 250 

15,230 

12,320 

12,110

16,910

Sept.

16,500 

16,500 

16,600 

16,500 

16,400

16,100 

15,600 

15,500 

15,200 

13,600

12,400 

11,900 

11,200 

10,800 

10,800

11,000 

11,000 

11,100 

9,550 

5,690

6,540 

9,690 

11,000 

11,800 

12,900

13,500 

11,100 

4,840 

6,480 

11,600

Runoff In 

acre -feet

1,182,000 

995,900 

1,246,000

13,320,000

1,034,000 

1,094,000 

1,240,000 

1,017,000 

1,108,000 

907,600 

936,200 

757,700 

720,800

12,240,000
COLORADO RIVER MAIN STEM 39

Havasu Lake near Parker Dam, Ariz.-Calif.

Location.- -Water-stage recorder, lat. 34°19', long. 114°09>, In SW£ sec. 28, T. 3 N., R. 

27 E. San Bernardino meridian, at Intake pumping plant 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. Datum of gage is 400.54 feet above mean sea 

level, datum of 1929, or 400.83 feet above mean sea level, datum of Metropolitan Water 

District of Southern California. Gage readings have been reduced to elevations above 

mean sea level, datum of 1929.

Drainage area.--178,800 square miles at Parker Dam. 

Records available. July 1938 to September 1950.

Extremes. Maximum contents during year, 689,000 acre-feet May 30 (elevation, 450.58 feet); 

 minimum, 479,100 acre-feet Aug. 11 (elevation, 440.92 feet).

1938-50: Maximum contents, 693,000 acre-feet (by temporary use of flashboards) Apr.

18, 1943 (elevation, 450.76 feet); minimum, 71,400 acre-feet June 25, 1942 (elevation,

412.09 feet).

Remarks. Lake Is formed by concrete-arch dam; dam completed and storage began July 1,

1938. Usable capacity, 688,000 acre-feet (neglecting slope In Lake), between elevations 

400.54 feet (sill of regulating gates) and 450.54 feet {top of regulating gates) above 

mean sea level. Dead storage, 28,600 acre-feet below elevation 400.54 feet. About 

0.07 foot fall Indicated between Parker Dam and gage under normal operating conditions. 

Draw-down below elevation 440.54 feet (contents, 472,000 acre-feet) 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 ftfom 

which la pumped by Metropolitan Water District of Southern California to Colorado River 

aqueduct (see p. 41). Figures given herein represent usable contents.

Elevation at 12 p.m.., In feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

!1

Oct.

447.33

447.43

447.46

447.24

446.99

446.86

446.93

447.03

447.18

447.19

446.91

446.79

446.64

446.77

447.01

447.27

447.33

447.21

447.16

447.31

447.71

446.11

446.40

448.43

448.14

446.04

446.02

448.07

446.14

448.17

447.99

NOT.

447.55

447.28

447.19

447.19

447.27

447.36

447.24

446.60

446.56

446.56

446.62

446.56

446.14

445.43

444.52

444.09

444.14

444.35

444.92

445.56

445.72

445.66

445.91

446.31

446.79

446.71

446.64

446.55

446.35

446.36

-

Dec.

446.64

447. 04

447.33

446.80

448.11

448.20

448.38

448.63

446.87

449.22

449.49

449.68

449.74

449.34

449.73

449.62

449.54

449.45

449.1O

446.62

446.54

446.66

446.92

449.46

449.77

449.73

449.48

449.21

449.22

449.03

449.68

Jan.

450. 1O

450.01

449.54

449.06

449.06

449.27

449.72

450.04

450.12

449.62

449. SI

449.93

450.19

450.35

450.44

450.43

450.40

450.43

450.24

449.95

449.50

449.13

448.51

447.76

447.10

446.65

446.32

446.32

446.47

446.51

446.52

Feb.

446.57

446.60

446.62

446.71

446.67

447.05

447.18

447.33

447.41

447.50

447.74

447.63

447.64

447.66

447.36

447.66

447.92

447.96

448.06

448.28

448.38

448.33

448.42

446.47

446.57

448.70

448.73

448.76

_

-

Har.

448.77

448.83

448.90

449.03

449.19

449.36

449.41

449.46

449.53

449.60

449.74

449.65

449.58

449.53

449.51

449.50

449.52

449.54

449.53

449.54

449.51

449.56

449.62

449.62

449.63

449.67

449.66

449.65

449.60

449.53

449.49

Apr.

449.66

449.61

449.92

449.68

449.29

449.02

448.61

448.71

448.91

448.84

448.80

448.80

448.78

448.78

449.05

449.25

449.14

449.04

448.39

448.63

448.77

448.77

448.89

449.04

449.09

449.16

449.20

449.30

449.36

449.39 "

Hay

449.39

449.26

449.42

449.45

449.49

449.66

449.66

450.04

450.20

450.23

450.14

450.11

450.09

450.22

450.25

450.23

450.20

450.23

450.24

450.30

450.36

450.40

450.40

450.37

450.40

450.42

450.42

450.45

450.48

450.46

450.19

June

450.16

450.16

450.14

450.19

450.24

450.24

450.22

450.17

450.13

450.23

450.25

450.32

450. 28

450.26

450.21

450.13

450.13

450.17

450.16

45O.13

450,05

450.00

449.97

449.96

449.97

449.96

449.97

449.97

449.96

449.97

-

July

450.07

450.09

450.11

450.04

449.96

449.96

450.06

450.16

450.20

450.16

450.12

450.04

450.03

450.03

450.04

450.07

450.10

450.09

450.05

450.07

450.03

450.08

450.16

450.19

450.04

450.04

450.00

450.03

450.14

450.26

450.46

Aug.

450.04

449.14

447.84

446.47

444.99

443.56

442.46

441.81

441.36

441.01

440.97

441.13

441.29

441.51

441.72

442.16

442.39

442.51

442.92

443.26

443.40

443.78

444.05

444.41

444.57

444.54

444.80

445.16

445.59

445.84

446.34

Sept.

446.59

446.99

447.44

447.64

447.94

448.23

448.56

448.65

449.16

449.35

449.35

449.27

449.21

449.12

449.06

448.90

448.77

446.58

448.44

447.91

447.37

447.22

447.14

447.10

447.24

447.31

447.21

446.56

446.09

446.09

-

207364 O- 52 - 4
40 COLORADO RIVER MAIN STEM

Usable contents at 12 p.m., In thousands of acre-feet, of Havaau Lake near Parker Dam, Artz.-Calif., 

water year October 1949 to September 1950

Day

1

2

3

4

5

6

r

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.

615.0

616.1

616.7

611.9

606.*

604.0

60S.]

607.3

610.6

610.8

604.6

6O2.0

698.7

601.6

606. S

612. e

613.9

611. Z

610.1

613.4

622.4 631. e

638.2

639. (

632.2

630. 0

629.5

630.7

632.3

633.0

628.8

Nov.

618.7

63.2.8

610. -8

610.8

612.6

614.5

611.9

602.2

596.9

596.9

598.3

596.9

587.7

572.2

553. J

544.0

545.1

549.5

561. 5

574.9

578. 5

577.1

582. (

591.4

602.C

600.2

598.7

596.7

592.3

592. S

-

Dec.

598.7

607.5

615.0

624.5

631.6

633.7

637.8

643.6

649.1

657.1

663.4

667.7

669.1

671.4

668.9

666.3

664.5

662.4

654.4

643.3

641.5

644.7

650.2

662.7

669.8

668,9

663.1

656.9

657.1

65?. 8

667.7

Jan.

677.*

675.3

664.5

653.9

653.5

658.3

668.6

676.0

677.9

670.9

670.7

674.6

679.6

683.4

685.6

685.4

684.6

685.4

680.8

673.9

663.6

655.1

640.8

623.6

608.8

598.9

591.7

591.7

595.0

595.8

596.1

Feb.

S97..2

597.8

598.3

600.2

603.8

607.7

610.6

613.9

615.6

617.6

623.1

625.2

625.4

625.9

625.9

626.3

627.2

628.6

630.5

635.5

637.8

637.8

638.7

639.9

642.2

645.2

645.9

646.6

_

-

Mar.

646.8

648.2

649.8

652.8

656.4

660.4

661.5

662.7

664.3

665.9

669.1

667.0

665.4

664.3

663.8

663.6

664.0

664.5

664.3

664.5

663.8

665.4

666.3

666.3

666.6

667.5

667.7

667.0

665.9

664.3

663.4

Apr.

667.3

670.7

673.2

667.7

658.8

652.5

647.7

645.4

650.0

649.4

647.5

647-. 5

647.0

647.0

653.2

657.8

655.3

653.0

649.6

E48.2

646.8

646.8

649.6

653.0

654.2

655.8

656.7

659.0

660.4

661.0

-

May

661.0

658.5

661.7

662.4

663.4

667.7

672.3

 676.0

679.8

680.6

678.4

677.7

677.2

680.3

681,0

680.6

679.8

680.6

.680.8

682.2

683.7

684.6

684.6

683.9

684.6

685.1

685.1

685.8

686.6

686.1

679.6

June

678.9

678.9

678.4

679.6

680.8

680.8

680.3

679.1

678.2

680.6

681.0

682.7

681.8

681.3

680.1

678.2

678.2

679.1

678.9

678.2

676.2

675.1

674.4

674.2

674.4

674.6

674.4

674.4

674.2

674.4

-

July

676.7

677.2

677.7

676.0

674.2

674.6

677.0

679.4

679.8

679.4

677.9

676.0

675.8

675.8

676.0

676.7

677.4

677.2

676.2

676.7

675.8

677'. 0

878,9

679.6

676.0

676.8

675.1

675.8

678.4

681.3

686.1

Aug.

676.0

655.3

625.4

595.0

563.0

533.3

509.9

496.9

488.3

480.9

480.1

483.3

486.5

490.9

495.1

504.3

508.5

510.9

519.5

526.6

529.6

537.5

543.2

550.8

 554.1

553.5

559.0

566.9

575.6

581.1

592.1

Sept.

597.6

606.4

616.3

625.4

627.7

634.4

642.0

648.6

655.8

660.1

660.1

658.3

656.9

654.8

653.5

649.8

646.8

642.4

639.2

627.0

614.8

611.5

6O9.7

608.8

611.9

613.4

611.2

597.4

586.6

586.6

-

Monthly elevation ana Contents, water year October 1949 to September 1950

Date

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

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

Feb. 28....................

Mar. 31....................

Apr. 30....................

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

Materjrear 1949-50.......

Elevation 

(feet)t

447 99

449.68

_

449 49

449 39

450 19

449 97

446.09

-

Contents 

(acre-feet)

592 500

667,700

.

592 100

586,600

-

Change in contents 

during month 

(acre-feet)

+75,200

+71,200

+50 500

+18 600

-5,500

-28,400

t Elevations at 12 p.m.
COLORADO RIVER MAIN STEM

41

Colorado River below Parker Dam, Ariz. -Calif .

Location.-Water-stage recorder, lat. 34°15<30", long. 114°09'10", in NE&Wi sec. 16 T.

 2TT77 R 27 E. San Bernardino meridian, 4.1 miles downstream from Parker Dam, 10.4 

miles upstream from Headgate Rock Dam, and 11 miles northeast of Parker, Ariz. Datum 

of gage is 346.16 feet above mean sea level, datum of 1929.

HecOTdflavaiTable!--Pebr^rtoniSeptember 1934 (gage heights and fragmentary discharge

 records), October 1934 to September 1950. Records of diversion to Colorado River

h16yearS j.lO second-feet (not adjusted for storage); 

years (1934-50), 14,160 second-feet (adjusted to include storage in Havasu Lake, 

but not in Lake Mead and Lake Mohave). 

Extremes. -Maximum discharge during year, 23,300 second-feet Dec 18 (gage height 22.65

 FeeTT- minimum, 7,010 second-feet Sept. 28; minimum daily, 10,800 second-feet Sept. 30.

1935-50- Maximum discharge, 42,400 second-feet Feb. 8, 1937; no flow at Parker 

Dam parts of several days in 1942 when gates in dam were closed; minimum daily, 1,440

36Cto unregulated discharge of probably less than 1,350 second-feet occurred Aug. 18. 

1934 (lowest unregulated discharge since 1917 and probably since a much earlier date). 

Remarks. -Records excellent. Many diversions above station. Flow regulated by Hoover

 Dam-since Feb. 1, 1935, by Davis Dam since Jan. 17, 1950, and by Parker Dam since 

July 1 1938 (see pp. 31, 39). Diversion to Colorado River aqueduct, 1.8 miles upstream from Parker Dam, is water pumped from Havasu Lake. As a result of percolation 

from Gene and Copper Basin Reservoirs, some return flow occurs above and below station.

Cooperation. Record of diversions to Colorado River aqueduct furnished by Metropolitan

 Water District of Southern California.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

19,600 

19,600 

19,60O 

19,600 

19,700

19,600 

19,60O 

19,200 

18,400 

19,000

18,800 

18,300 

19,100 

18,700 

16,900

16,900 

17,900 

18,000 

17,900 

17,900

18,200 

17,800 

17,900 

18,600 

18,800

18,300 

18,300 

19,100 

19,300 

19,300 

18,700

Nov«

19,300 

19 , 200 

13,900 

18,700 

18,400

18,400 

18.60O 

19.OOO 

18,800 

18,900

18,900 

17,500 

17,600 

17,700 

18,000

17,200 

15,300 

15,100 

13,200 

13,200

15,000 

15,400 

15,200 

14,900 

15,200

16,400 

16,400 

16,500 

16,400 

16,600-

Dec.

16,600 

16,400 

17,400 

17,100 

17,500

17,400 

17,200 

18,200 

19,300 

19,500

19,500 

19,600 

19,800 

19,900 

22,700

22,600 

22,3OO 

21,300 

22,800 

20,900

19,300 

19,300 

19,300 

17,000 

16,200

18,100 

16,400 

16,800 

17,400 

18,000 

18,100

Jan.

16,000 

18 , 300 

18,900 

18,800 

-18,800

18,900 

17,900 

17,600 

18,20O 

19,100

19,300 

19,500 

19,600 

19,800 

21,700

21,000 

19,000 

16,900 

19,100 

16,900

14,000 

12,000 

14,OOO 

17,000 

17,000

16,500 

16,400 

14,500 

14,200 

16,600 

17,000

Month

Oct 

Nou 

Dec

C

Jan 

Pet 

Mar 

Apr 

Maj 

Juri 

Jul 

Aug 

Sep

V,

ember .......................

alendar year 1949. ..........

nary

11..........................

ust .........................

ater year 1949-5

Feb".

17,400 

18,100 

18,700 

18,6OO 

18,200

17,900 

18,200 

18,000 

18,600 

18,600

18,800 

18,400 

18,600 

19,000 

lf,000

19,000 

19,000 

19,100 

19,000 

18,300

19,000 

13,800 

19,100 

19,100 

18,700

18,800 

18,900 

19,200

Secondfoot-days

578,600 

509,900 

583,900

6,584,700

544,500 

522,100 

609,500 

503,100 

537,300 

453,800 

452,300 

419,800 

354,900

6,069,700

Mar.

19,1OO 

19,200 

19,100 

18,600 

18,400

18,400 

19,300 

19,400 

19,100 

19,500

20,300 

20,600 

20,600 

20,600 

20,500

20,500 

20,500 

20,900 

20,900 

20,800

'20,700 

19,300 

19,200 

19,300 

19,400

19,100 

19,300 

19,300 

19,200 

19,200 

19,200

Apr.

17,600 

16,600 

17,100 

16,400 

17,000

17,300 

17,000 

16,300 

14,500 

16,500

16,200 

16,400 

16,900 

16,300 

14,300

14,600 

18,300 

18,100 

17,900 

17,800

17,600 

16,900 

16,700 

16,400 

16,400

16,400 

16,600 

16,900 

17,800 

18,300

May

18,300 

18,400 

18 , 100 

18,100 

18,000

16,800 

16,600 

16,500 

16,500 

16,800

18,800 

18,300 

17,900 

16,700 

17,100

17,800 

17,300 

17,300 

17,500 

16,700

16,900 

17 , 200 

17,100 

17,200 

17 , 200

17,100 

17,400 

17,300 

17,400 

17,300 

15,700

June

14,800 

15,300 

17,500 

17,300 

17,200

17,100 

16,500 

16,300 

16,100 

14.60O

14,600 

14,500 

14,900 

15,100 

14,700

14,700 

14,200 

13,700 

14,000 

14,400

14,400 

14,200 

14,100 

14,900 

14,900

14,700 

14,800 

14,800 

14,900 

14,600

Discharge In second-feet

Maximum

19,700 

19,300 

22,800

25,100

21,700 

19,200 

20,900 

18,300 

18,800 

17,500 

15,600 

14,700 

14,800

22,800

Minimum

16,900 

13,200 

16,200

13,200

12,000 

17,400 

18,400 

14,300 

15,700 

13,700 

13,900 

12,300 

10,800

10,800

Mean

18,660' 

17,000 

18,840

18,040

17,560 

18,650 

19,660 

16,770 

17,330 

15,130 

14,590 

13,540 

11,830

16,630

July

14,400 

14,200 

15,200 

15,600 

15,500

15,100 

14,100 

14,000 

14,300 

14.60&

15,100 

14,9OO 

14,700 

13,900 

14,200

14,100 

14,300 

14,900 

14,800 

14,700

15,200 

14,700 

14,400 

14,700 

14,700

14,600 

14,800 

14,200 

14,500 

13,900 

14,000

Runoff in 

acre-feet

1,148,000 

1,011,000 

1,158,000-

13,060,000

1,080,000 

1,036,000" 

1,209,000 

997,900 

1,066,000 

900,100 

897,100 

832,700 

703,900

12,040,000

Aug.

14,200 

14,500 

13,900 

14,600 

14,100

14,300 

13,900 

14,700 

14,100 

13,300

13,60O 

13,800 

13,100 

13,600 

13,900

13,500 

13,600 

13,300 

13,600 

13,600

13,300 

13,500 

13,800 

13,100 

13,000

12,300 

12,400 

12,500 

12,900 

12,800 

13,000

Sept.

12,000 

11,900 

12,500 

12,800 

14,800

12,300 

112,300 

111,700 

111,200 

111,000

11,800 

12,000 

11,400 

11,300 

11,1OO

11,700 

12,300 

12,500 

11,600 

11 , 300

11,700 

11,900 

11,700 

11,700 

10,900

11,700 

12,000 

11,600 

11,400 

10,800

Diversion to 

Colorado River 

aqueduct 

(acre-feet)

15,911 

13,154 

12,755

178,597

12,955 

12,193 

13,469 

12,933 

23,768 

11,507 

22,697 

18,519 

13,269

183,130

a No gage-height record 5 discharge computed on basis of power-plant records.
42 COLORADO RIVER MAIN STEM 

DIVERSIONS BETWEEN PARKER DAM AND IMPERIAL DAM

Diversion for Colorado River 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. 114°16'30", in NE£ sec 31, T. 10 N., R. 19 

W. Gila and Salt River meridian, on Colorado River Indian Reservation, l| miles northeast of Parker and 14-| miles downstream from Parker Dam. The diversion is measured 

at check gate structure about 3-| miles downstream from intake.

Records available. January 1915 to December 1936 (calendar year discharge), January 1937 

to September i960 (monthly discharge).

Remarks. Figures given herein show water diverted to project. Discharge is the flow 

past check gate structure combined with the flow of two laterals which divert at this 

point. Flow over check gates is computed by weir rule and in laterals by pressure 

gages, checked occasionally by current-meter measurements. Water is used for irrigation on Colorado River Indian Reservation on east side of Colorado River between Parker 

and Ehrenberg. Plow returned to Colorado River through drainage canal at lower end of 

project based on discharge measurements made about every 10 days

Cooperation.--Records furnished by Office of Indian Affairs.

Monthly diversion, water year October 1949 to September 1950

Month

December ........................

Calendar year 1949 ............

May.............................

September .......................

Water year 1949 -50 ............

Second-feet

Maximum

259 

213 

230

485

258 

318 

333 

314. 

372 

517 

510 

665 

483

665

Minimum

105 

96 

100

0

0 

30 

59 

50 

0 

295 

230 

389 

125

0

Mean

186 

157 

166

222

117 

212 

239 

285 

288 

398 

416 

448 

397

276

Diversions 

In 

acre-feet

11,420 

9,320 

10,230

161,000

7,180 

11,760 

14,710 

16,960 

17,740 

23,710 

25,610 

27,540 

23,600

199,800

Water returned 

to river by 

drainage canal 

(acre-feet)

4,460 

3,520

4,110

42 , 470

3,580 

3,290 

3,970 

4,150 

4,680 

4,390 

5,070 

3,580 

3,970

48,770
COLORADO RIVER MAIN STEM 43

Colorado River at Imperial Dam, Ariz.-Calif.

Imperial Dam on Colorado River is located in lat. 32°53'00", long. 114°27'50". The 

California end is in W| sec. 9, T. 15 S., R. 24 E. San Bernardino meridian. The Arizona 

end is in SW&JW£ 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. Drainage area of 

the River at Imperial Dam Is 184,600 square miles.

At the California end of the dam, water is diverted by the Ail-American Canal for use 

in Arizona and California. At the Arizona end, water is diverted by the Gila Gravity 

Main Canal for use in Arizona. Water was first diverted by Ail-American Canal in October 

1938 and by Glla Gravity Main Canal in August 1943.

No records of flow of Colorado River have been collected at site of the dam either 

before or after its construction. The discharge figures published herewith are based on 

the combined daily records of discharge obtained at gaging stations on Colorado River at 

Yuma, All-American Canal near Imperial Dam, and Gila Gravity Main Canal at Imperial Dam, 

Dlus records of diversions by North Gila Valley Canal at Laguna Dam furnished by the 

Bureau of Reclamation, minus record for Gila River near Dome, neglecting drainage and 

waste return flow and channel losses between those stations and Imperial Dam. The com- « 

bination of records shows the flow of Colorado River at Imperial Dam and above all diversions in the vicinity of Yuma.

Records available, October 1942 to September 1950 (monthly discharge only). Records 

of daily and monthly discharge were obtained for July 1934 to September 1942 at a gaging 

station 14 \ miles upstream, and published as Colorado River near Picacho, Calif. Estimates of annual discharge for the years 1903-34, derived from records of Colorado River at 

Yuma, Gila River near Dome, and diversions at Laguna Dam, were published in Water-Supply 

Paper 918.

Monthly discharge, water year October 1949 to September 195O

Month

December. ................

Calendar year 1949.....

September. ...............

Water year 1949 -5O. ....

Maximum

22,400

24,600

12,600

22,400

Minimum

16,100

12,600

9,860

9,860

Mean

18,640

17,360

10,810

15,890

Run-off In 

acre-feet

1,146,000

12,570,000

757,500

643,400

11,5OO,OOO
^ COLORADO RIVER MAIN STEM

Colorado River at Yuma, Ariz.

Location.--Water-stage recorder, lat. 32°43'45", long. 114°37'15", in NW^NE^ sec. 35, T. 

a.5 i>., R. 22 E. San Bernardino meridan, 1,800 feet 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 boundry between California and Mexico, and 19 miles downstream from Imperial Dam. Datum of gage is 102.32 feet above mean sea level, Yuma project datum, .or 102.86 feet above mean sea level, datum of 1929, leveling of 1941.

Drainage area. 242,900 square miles, including all closed basins entirely within the 

drainage boundary.

Records available. January 1878 to December 1901 (gage heights only), January 1902 to September 1950.

Extremes.--Maximum discharge during year, 22,900 second-feet Jan. 12, occurred during period or sluicing at Laguna Dam; maximum gage height, 17.60 feet Nov. 3; minimum discharge, 

 256 second-feet June 23; minimum gage height, 9.00 feet Nov. 3.

1902-50: Maximum discharge, 250,000 second-feet Jan. 22, 1916 (gage height, 34.0 

feet); minimum daily, 18 second-feet Aug. 25-27, 1934, caused by diversion of river flow 

at Laguna Dam; minimum gage height, 8.36 feet 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, Ail-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, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9,050 

9,530 

9,380 

9,910 

10,200

10,200 

9,840 

9,970 

9,960 

10,500

9,970 

9,350 

10,100 

9,830 

10,200

9,870 

9,590 

9,900 

9,670 

9,930

9,950 

11,200 

10,800 

11,000 

10,000

10,100 

9,870 

9,760 

10,900 

11,100 

10,600

Nov.

11,600 

11,400 

11,400 

11,300 

12,000

11,800 

10,400 

11,000 

11,100 

11,600

12,600 

13,400 

12,400 

11,300 

11,300

11,100 

11,200 

10,800 

9,690 

9,650

8,, 930 

7,470 

7,380 

8,760 

9,280

9,790 

9,730 

9,610 

10,900 

11,200

Dec.

11,100 

11,100 

11,900 

11,300 

11,000

11,700 

11,700 

12,000 

12,900 

14,100

14,900 

14,600 

15,100 

15,200 

14,500

14,500 

16,200 

17,500 

17,500 

16,800

16,900 

16,200 

14,600 

15,000 

14,600

12,900 

11,600 

11,700 

10,900 

10,100 

11,100

Jan.

12,400 

12,500 

11,900 

10,500 

13,500

13,100 

13,800 

13,700 

13,200 

12,400

13,100 

14,200 

13,100 

14,000 

14,100

14,600 

16,100 

16,500 

14,900 

10,600

12,700 

11,900 

9,330 

7,090 

6,150

10,50O 

10,400 

10,800 

10,800 

9,330 

8,740

Feb.

9,750 

11,000 

10,300 

11,800 

13,400

13,200 

12,800 

11,900 

14,600 

12,500

13,100 

13,000 

12,700 

12,200 

12,000

11,500 

10,50O 

10,900 

11,500 

11,500

11,300 

11,000 

12,300 

9,790 

11,500

12,400 

12,400 

12,400

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Ha

lendar year 194S

ember ...................................

ter year 1949-50 .......................

Mar.

12,800 

13,200 

12,300 

13,200 

13,300

12,300 

11,100 

10,300 

11,200 

10,500

12,600 

12,200 

12,100 

12,400 

11,000

10,600 

8,O3O 

8,520 

9,330 

8,740

8,810 

8,590 

8,310 

5,710 

6,010

7,340 

7,030 

6,970 

6,910 

6,850 

5,130

Apr.

6,270 

6,770 

5,990 

4,040 

3,280

3,980 

3,050 

3,580 

4,510 

4,380

3,580 

2,610 

3,390 

2,290 

2,850

3,860 

4,590 

3,380 

3,350 

5,040

4,740 

5,950 

6,080 

5,650 

5,390

5,550 

6,220 

4,730 

5,970 

7,090

Secondfoot-days

312,230 

320,090 

421,200

3,309,740

375,940 

333,240 

303,380 

138,160 

227,350 

84,742 

47,260 

14,864 

32,687

2,611,143

May

7,340 

7,310 

8,170 

8,940 

8,810

9,060 

8,280 

7,930 

7,630 

7,470

7,060 

5,900 

6,6.80 

7,930 

8,030

7,800 

7,240 

8,530 

6,980 

7,830

7,930 

7,630 

6,660 

6,320 

6,820

5,020 

6,440 

6,500 

6,170 

6,550 

6,390

Maximum

11,200 

13,400 

17,50O

20,600

16,500 

14,600 

13,300 

7,O9O 

9,060 

6,9OO 

3,670 

1,120 

2,460

17,500

June

6,900 

4,570 

4,690 

3,580

4,120

5,070 

5,410 

5,880 

4,770 

4,690

4,430 

4,070 

2,860 

2,310 

3,020

1,710 

2,040 

2,320 

2,300 

1,630

1,060 

1,070 

265 

596 

683

584 

774 

1,140 

1,140 

1,060

July

1,210 

1,330 

1,250 

1,190 

990

1,210 

2,800 

3,160 

3,670 

3,240

2,230 

1,570 

2,170 

1,570 

1,780

- 1,620 

1,030 

676 

608 

697

608 

1,010 

1,180 

1,350 

1,580

1,530 

1,810 

778 

823 

1,150 

1,440

Minimum

9,050 

7,380 

10,100

1,270

6,150 

9,750 

5,130 

2,290 

5,020 

265 

608 

3OO 

299

265

Aug.

1,120 

718 

586 

606 

530

460 

854 

1,060 

774 

415

344 

336 

344 

368 

372

440 

368 

336 

364 

560

465 

352 

328 

384 

356

300 

332 

348 

352 

340 

352

Mean

10,070 

10,670 

13,590

9,068

12,130 

11,900 

9,786 

4,605 

7,334 

2,825 

1,525 

479 

1,090

7,154

Sept.

299 

340 

410 

676 

546

700 

1,280 

2,460 

1,120 

1,4OO

1,470 

1,240 

870 

870 

1,140

1,340 

1,130 

788 

542 

1,500

2,210 

1,100 

1,520 

1,440 

1,270

1,270 

1,250 

774 

846 

886

Runoff In 

acre-feet

619,300 

634,900 

835,400

6,565,000

745,700 

661,000 

601,700 

274,OOO 

450", 900 

168,100 

93,740 

29,480 

64,830

5,179.000
45

POINTS AT WHICH STREAM-FLOW RKCORDS ARE TAKEN

1. Colorado River at Imperial Dam

2. Colorado River at Yuraa

3. Colorado River and Pilot Knob waateway at 

Rockwood gate

4. Colorado River at International Boundary 

above Moreloa Dam,near Andrade, Calif.

5. Olla Gravity Main Canal at Imperial Dam

6. All-American Canal near Imperial Dam

7. All-American Canal above Pilot Knob wasteway

8. Yuma Main Canal at alphon-drop power plant

9. Yuma Main Canal below Colorado River siphon

10. Yuma Main Canal wasteway at Yuma

11. Pilot Knob wasteway near Pilot Knob

12. North Olla Valley canal at Laguna Dam

13. Alamo Canal at Andrade

Return surface flows from Yuma project: 

To Colorado River:

14. California drainage canal

15. Araz drain

16. Cooper wasteway

17. Elevenmlle wasteway

18. Twenty-one mile wasteway 

Across Arizona-Sonora boundary

19. Main drain

20. East Main Canal 

21. Olla River near Dome

R.20E.

Detail of area A.

IMPERIAL DAM

UNITED_XSTATES

MEXICO 

MORELOS DA

Figure 2. - Gaging stations in vicinity of Yuraa, Arlz.
46 COLORADO RIVER MAIN STEM

Colorado River and Pilot Knob wasteway at Rockwood gate, Calif.

Location. Lat. 32°44'00", long. 114°42'40", in SE^SW^ sec. 25, T. 16 S., R. 21 E. San 

Eernardino meridian, at Rockwood gate, 1 mile upstream from international boundary, 

5 miles west of Yuma, Ariz., and 6 miles downstream from gaging station on Colorado 

River at Yuma.

Drainage area. 243.000 square miles for Colorado River at California-Mexico boundary.

Kecoras available.--1934 to November 1950, discontinued (1934-36, yearly discharge only; 

January 193Y to September 1945, monthly discharge only).

Remarks. Records good. Records show total flow at Rockwood gate, and are the sum of 

records obtained at gaging stations on Colorado River at Yuma, Yuma Main Canal wasteway at Yuma, and Pilot Knob wasteway near Pilot Knob, plus records of California drainage canal and Araz drain furnished by Bureau of Reclamation. Rockwood gate, at nead 

of Alamo Canal, which also receives water from All-American Canal through Pilot Knob 

wasteway, can be used to control the flow of Colorado River water into the canal or to 

return water from Pilot Knob wasteway to Colorado River. This point is below all diversions for use within the United States. For additional water available below this 

point see record of Return surface flows from Yuma project. Station was discontinued 

Nov. 8, 1950, when Morelos Dam was completed and diversion to Alamo Canal at Rockwood 

gate was discontinued.

Discharge, In second-feet, 1949-5O 

1949-50

'Day

1

2

3

4

5

6

7

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.

13,000

12,100

11,700

12,200

12,300

11,900

11,200

11,400

11.3OO

11,900

11,400

1O,8OO

11,500

11,200

11,600

11,3OO

11,000

11,300

11,100

11,300

11,300

12,6OO

12,3OO

11,900

11,400

11,500

11,300

11,300

12,500

12,6OO

12,100

Nov.

13,100

12,90O

12.9OO

12,700

13,6OO

13,300

11.6OO

12,100

12,300

13,OOO

14,000

15,000

13.9OO

12,600

12,600

12,500

12,600

12,400

11,3OO

11,300

10,300

8,910

S,830

10,300

10,900

11,40O

11,400

11,OOO

12,3OO

12,700

-

Dec.

12,700

12,700

13,500

12,900

12.30O

13,100

13,200

13,7OO

14,600

15,8OO

16,300

16,600

17,000

16,900

16,100

16,2OO

17,800

19,1OO

19,OOO

18,2OO

18,400

17,8OO

16,3OO

17,000

16,60O

15,000

13,OOO

13,100

12,400

11,700

12,700

Jan.

14,100

14,OOO

13.40O

11,900

14,9OO

14,600

15,30O

15,40O

14 , 9OO

14,100

14,900

16,000

14,900

15,600

15,700

15,9OO

17,40O

17,900

16,4OO

12,2OO

14,300

13,7OO

11,000

8,770

7,910

12,3OO

12 , 1OO

12,400

12,300

10,600

10,000

Feb.

11 , 2OO

12,500

11,800

13,3OO

14,900

14,400

14,OOO

13,200

14,700

12,600

13.8OO

14,6OO

14,OOO

13,400

13.2OO

12,700

11,900

12,300

13,OOO

12,700

12,500

12,200

13,700

11,400

13,200

14,100

13,7OO

13,700

_

_

-

liar.

14,300

14,900

14,100

14,900

14,900

13,600

12,500

11,8OO

12,700

12,000

14,200

13,900

13,400

13,7OO

13,700

14,800

12,700

13,900

14,3OO

14,000

14,OOO

13,800

13,600

11,100

11,600

13,000

12,300

12,200

12,100

12,20O

10,600

Apr.

11,800

12,400

11,200

9,150

8,47O

9,250

8,47O

9,120

lO.lOO

9,62O

8,750

7,760

8,42O

7,43O

8,150

9,140

9,O6O

7,6SO

7.55O

9,020

8,700

9,91O

9,910

9,120

8,70O

8,860

9,540

8.O50

9,020

10,200

-

May

10,100

9,98O

10,700

11,200

11,000

11,300

1O,5OO

10,100

9,620

9,420

9,070

7,950

9,O4O

10,600

10,600

10,000

9,37O

10,700

9.36O

1O,500

10,800

10,2OO

9,460

9,330

1O.OOO

8,330

9.9OO

10,lOO

9,460

9,84O

9,900

June

10,600

8,260

8,56O

7,780

8,220

9,250

9,76O

10,300

9,33O

9,270

9,140

8,740

,63O

,17O

,910

,70O

,2SO

,86O

,66O

,95O

,43O

,580

,720

,030

6,390

6,21O

6,320

6,680

6,750

6.77O

-

July

7,210

7,360

7,O60

6,91O

6,400

6,710

S,35O

8,880

9.38O

9,08O

8,130

7,440

7,340

6.52O

6,680

6,44O

5,870

5,530

5,440

6,OOO

6,100

6,64O

7, ISO

7,210

7,39O

7,450

7.67O

6,350

6,910

7,320

7.25O

Aug.

6,790

6,46O

5,950

5,620

6,270

6,67O

6,680

6,75O

6,660

6,460

6,460

6,370

6,260

5,920

5,890

6,O40

5,870

6,060

6,200

6,570

6, ISO

5,840

5,93O

6,050

6,220

6,29O

6,3OO

5,860

5,510

5,180

5,090

Sept.

5,220

5,740

5,810

5,700

5,600

5,740

6,310

7,470

6,020

6.21O

5,700

5,330

4,S4O

4,590

4,620

4,65O

4,39O

3,870

3,570

3,100

4,640

3,950

3,510

4,230

4,O2O

3,740

3,710

3,330

3,560

3,670

Day

1

2

3

4

5

6

Oct.

3,750

3,500

3,230

3,070

4.27O

3,010

Nov.

2,56O

4,700

2, ISO

2,240

2,87O

2,510

Day

1

8

9

10

11

12

Oct.

3,270

3,380

3,530

3,920

3,740

3.35O

Nov.

2,360

2,340

_

_

_

-

Day

13

14

15

16

17

18

Oct.

3,210

3,09O

3,500

3,69O

3,130

2,720

Nov.

_

_

_

_

_

-

Day

19

2O

21

22

23

24

Oct.

4,70O

2,39O

2,680

3,O1O

2,720

2,780

Nov.

_

_

_

_

_

-

Day

25

26

27

28

29

30

31

Oct.

2,790

2,670

2.78O

2,710

2,960

2,76O

2,840

Nov.

_

.

.

_

_

_

-

Monthly discharge, In second-feet, 1949-50

Month

December. ...................................

Calendar year 1949 .......................

February

May.........................................

September. ..................................

Water year 1949-50 .......................

Movnbar 1-8. ...............................

Seoondfoot-daya

471,700

4,425,170

232 250

142,840

3,770,090

99,150

21,73O

MaxiMHi

12,600

15,000

19, 1OO

22,70O

7,470

19,100

4,700

4,700

Minium

10,800

8,830

11,700

6,620

5 44O

3,100

3,1OO

2,390

2, ISO

Mean

11,660

12,120

15,220

12,120

13 25O

4,761

10,330

3,198

2,716

Runoff inacre-feet

717,200

721,500

935,600

S,777,OOO

283,300

7,478,000

196,700

43,100
COLORADO RIVER MAIN STEM 47

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

Location. Water-stage recorder, lat. 32°43'00", long. 114°43tOO", NE^SE^ sec. 21, T. 8 

S77~R. 24 W. Oila and Salt River meridian, at northerly international boundary, half a 

mile east of Andrade, 1 mile upstream from Morelos Dam, 1^ miles downstream from Rockwood Gate,, and 7f miles downstream from gaging station on Colorado River at Yuma. 

Datum of gage is mean sea level, datum of 1929.

Drainage area.--243,OOP square miles.

Records available. January to September 1950.

Extremes. Maximum discharge during period, 22,570 second-feet Feb. 23 (elevation, 111.09 

FeeT/; minimum, 1,090 second-feet Aug. 4 (elevation, 103.30 feet).

Remarks. This record when combined with that of Alamo Canal at Andrade shows water

passing northly international boundary. No diversions to the United States below this 

station.

Cooperation.--Records furnished by International Boundary and Water Commission, United 

states Section.

Discharge, In second-feet, Mater year October 1949 to September 195o

Day

1 

2 

3 

4 

5

6 

7 

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. Uov. Dec. Jan.

13,440 

13,390 

12,890 

12,470 

14,890

13,780 

14,820 

14,680 

14,490 

13,530

14,050 

14,860 

14,050 

15,110 

15,450

16,120 

17,360 

17,260 

16,390 

12,750

15,210 

14,870 

11,610 

8,560 

8,050

11,890 

11,790 

12,380 

12,430 

10,570 

9,300

Feb.

10,690 

12,620 

11,650 

13,490 

15,110

14,530 

14,490 

13,210 

14,490 

12,980

13,910 

15,010 

14,100 

13,300 

12,890

12,660 

11,790 

12,430 

12,660 

11,880

11,570 

11,390 

12,710 

10,990 

12,060

12,980 

12,430 

12,150

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu

Sept

W

nber. ....................................

lendar year 

ary

Mar.

12,570 

13,810 

12,890 

12,890 

, 12,840

11,700 

10,230 

9,690 

10,840 

10,340

11,830 

11,970 

11,390 

11,430 

11,570

11,510 

9,940 

10,050 

10,810 

10,150

10,270 

10,340 

10,760 

7,690 

8,090

8,480 

8,370 

8,030 

7,870 

8,170 

6,670

Apr.

7,470 

7,920 

7,270 

4,590 

4,690

5,450 

4,650 

5,060 

5,950 

5,900

5,060 

4,060 

4,960 

3,830 

4,330

5,450 

5,880 

4,820 

4,590 

6,480

6,400 

7,190 

7,270 

6,750 

6,630

6,940 

7,520 

6,470 

7,300 

8,540

Seoondfoot-days

418,440 

360,170 

323,190 

180,320 

272,720 

133,440 

91,730 

58,250 

72,890

-

May

8,610 

8,580 

9,050 

10,390 

10,080

10,580 

9,800 

9,520 

9,180 

8,920

8,700 

6,930 

7,860 

9,760 

10,080

9,760 

9,050 

9,780 

8,130 

9,590

10,120 

9,150 

7,880 

7,540 

8,060

6,740 

7,960 

8,350 

7,490 

7,610 

7,470

Maximum

17,360 

15,110 

13,810 

8,540 

10,580 

8,390 

5,370 

2,480 

4,070

-

June

8,390 

5,850 

6,100 

5,270 

5,310

6,540 

7,080 

7,610 

6,540 

6,640

6,400 

5,840 

4,720 

3,920 

4,630

3,470 

3,840 

4,130 

3,990 

3,190

2,630 

2,660 

2,060 

2,180 

2,340

2,080 

2,070 

2,630 

2,660 

2,670

July

3,120 

3,430 

3,100 

2,980 

2,610

2,700 

4,260 

5,060 

5,370 

5,040

4,110 

3,380 

3,400 

2,080 

2,330

2,130 

1,810 

1,450 

1,340 

1,680

2,050 

2,290 

2,880 

2,940 

3,290

3,300 

3,400 

1,970 

2,580 

2,780 

2,820

Minimum

8,050 

10,690 

6,670 

3,830 

6,740 

2,060 

1,340 

1,320 

1,490

-

Aug.

2,480 

2,130 

1,860 

1,320 

2,030

2,310 

2,380 

2,450 

2,270 

2,060

2,000 

1,960 

1,980 

1,750 

1,700

1,830 

1,570 

1,660 

1,750 

2,050

1,840 

1,530 

1,600 

1,710 

1,830

2,020 

2,140 

1,740 

1,420 

1,430 

1,450

Mean

13,500 

12,860 

10,430 

6,011 

8,797 

4,448 

2,959 

1,879 

2,430

-

Sept.

1,490 

1,820 

1,980 

1,980 

1,880

1,980 

2,780 

4,070 

2,690 

3,060

2,760 

2,460 

2,110 

2,140 

2,430

2,650 

2,460 

1,950 

1,640 

2,580

3,310 

2,270 

2,730 

2,970 

2,670

2,540 

2,630 

2,190 

2,320 

2,350

Runoff In 

acre-feet

829,960 

714,390 

641,040 

357,660 

540,930 

264,670 

181,940 

115,540 

144,580

3,790,710
48 DIVERSIONS AND RETURN PLOWS AT AND BELOW IMPERIAL DAM

Gila Gravity Main Canal at Imperial Dam, Ariz.-Calif.

Location.--Water-stage recorder, lat. 32°52'35", long. 114°27'15", in SE^SW^ sec. 30, T. 

6 t>., R. 21 W. Gila and Salt River meridian, 3,200 feet downstream from intake at east 

end of Imperial Dam. Datum of gage is 160.00 feet above mean sea level, datum of 1929.

Records available. August 1943 to September 1950.

Extremes.--Maximum discharge during year, 435 second-feet May 25 (gage height, 13.32 feet); 

no flow May 22, 23.

1943-50: Maximum discharge, 776 second-feet Sept. 7, 1945 (gage height, 16.44 feet); 

no flow for several days in 1947, 1949, 1950.

Remarks. Records good except those below 50 second-feet, which are fair. 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 second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

184 

162 

187 

280 

298

259 

197 

124 

158 

180

181 

196 

201 

204 

182

151 

132 

150 

143 

127

146 

110 

67 

142 

213

252 

235 

184 

190 

231 

297

Nov.

299 

294 

246 

167 

133

89

183 

188 

185

186

82

115 

247 

232 

54

5 

254 

184 

163 

177

192 

177 

168 

170 

168

137 

139

160 

177 

160

Dec.

150 

140 

125 

124 

135

149

160 

111 

56 

19

42 

108 

79 

43 

43

27 

26 

44 

69 

129

145 

75 

21 

20 

20

58 

168 

131 

145 

128 

120

Jan.

65 

120 

54 

84 

186

164 

38 

36 

61 

111

124 

82 

85 

46 

43

87 

75 

94 

72 

42

52 

84 

159 

110

145

132 

89 

35 

93 

240 

231

Feb.

182 

61 

39 

39 

115

191 

166 

191 

169

113

92 

61 

60 

136 

169

174 

155 

180 

180 

213

223 

174 

123 

118 

108

133 

135

138

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

105 

96 

120 

105 

154

188 

239 

286 

295 

278

276 

250 

178 

138 

172

167 

138 

139 

144 

171

164 

172 

235 

197 

208

193

199 

109 

178 

239 

266

Apr.

278 

241 

254 

254 

271

285 

193 

229

261 

66

217 

341 

292 

276 

263

188 

188 

55 

293 

322

333

310 

322 

309 

297

274 

266 

247 

215 

219

Secondroot-days

5,763 

5,131 

2,810

67,911

3,039 

3,838 

5,799 

7,559 

7,445 

7,537 

6,257 

7,523 

9,064

71,765

May

261

236 

207 

207 

246

141 

202 

219 

201 

264

284 

265 

230 

222 

225

224 

264 

312 

310 

112

1 

0 

23 

168 

381

388 

341 

375 

382 

382 

372

Maximum

298 

299 

168

381

240 

223 

295 

341 

388 

374 

308 

321 

348

388

June

374 

280 

220 

239 

265

263 

275 

269 

264 

223

196 

256 

239 

232 

255

238 

240 

206 

238 

245

249

261 

277 

242 

214

242 

262 

242 

248 

283

July

286 

255

223 

250 

270

255 

188 

30 

23 

71

131 

139 

158 

242 

308

277 

298 

306 

300 

258

188 

128 

168 

159 

236

229 

238 

225 

237 

178 

3

Minimum

67 

5 

19

0

35 

39 

96 

55 

0 

196 

3 

4 

236

0

Aug.

4

80 

193 

222 

221

228 

266 

278 

294 

288

259 

256 

258 

260 

264

271 

271 

242 

179 

179

282 

292 

321 

300 

265

280 

302 

268 

225 

229 

246

Mean

186 

171 

90.6

186

98.0 

137 

187 

252 

240 

251 

202 

243 

302

197

Sept.

275 

294 

320 

316 

3O8

313 

308 

278 

325 

304

300 

307 

322 

327 

328

326 

330 

330 

327 

325

! 333 

324 

250 

240 

238

237 

236 

251 

344 

348

Runoff in 

acre-feet

11,430 

10,180 

5,570

134,700

6,030 

7,610 

11,500 

14,990 

14,770 

14,950 

12,410 

14,920 

17,980

142 , 300
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 49

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

Location. --Water-stage recorder, lat. 32°52'15", long. 114°28'50", in SE^NWi sec. 17, T. 

15 S. , R. 24 E. San Bernardino meridian, 6,000 feet downstream from intake at west end 

of Imperial Dam and 13? miles upstream from turnout to Yuma Main Canal. Datum of gage 

is 150.00 feet above mean sea level, datum of 1929 (subject to undetermined changes 

caused by earthquake of May 18, 1940).

Records available. --October 1939 to September 1950.

Extremes. --Maximum discharge during year, 12,400 second-feet Aug. 4, 5; maximum gage 

height, 23.53 feet Aug. 4; minimum daily discharge, 3,880 second-feet Dec. 11.

1939-50: Maximum discharge 13,100 second-feet Apr. 7, 1949 (gage height, 22.16 

feet); no flow on some days of several years.

Remarks. --Records excellent. Ail-American Canal diverts water from Colorado River at 

Imperial Dam. Water is used for power development, -for irrigation in Yuma, Coachella, 

ana Imperial Valleys. Water is diverted from Ail-American Canal wasteway to Alamo 

Canal for irrigation in Mexico. First diversion to Ail-American Canal began February 

1939 but prior to October 1940 was used only for priming canal.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9,660 

8,800 

8,800 

8,570 

8,310

8,060 

8,440 

8,580 

8,260 

7,890

7,540 

7,690 

7,500 

7,480 

7,450

7,530 

7,280 

7,010 

7,260 

7,210

7,240 

7,050 

6,770 

6,350 

6,930

7,040 

7,560 

7,620 

7,290 

6,860 

6,940

Nov.

6,790 

6,960 

6,720 

6,810 

6,930

6,640 

6,420 

6,330 

6,220 

6,200

5,830 

5,440 

5,910 

5,920 

5,860

6,000 

6,080 

5,970 

5,980 

5,360

5,340 

5,690 

5,570 

5,220 

5,290

5,500 

5,170 

5,140 

5,050 

4,930

Dec.

,970 

,070 

,980 

,890 

,910

,980 

,210 

,890 

,390 

,310

,880 

,350 

,690 

,960 

,100

,250 

,000 

,820 

,810 

,020

,920 

,530 

,430 

,740 

,380

,550 

,910 

,7flO 

,500 

,830 

,500

Jan.

5,150 

5,160 

5,220 

5,810 

5,690

5,610 

5,530 

5,370 

5,150 

5,390

5,4-30 

5,590 

5,550 

5,490 

5,250

4,900 

4,850 

5,090 

5,020 

5,280

5,200 

5,170 

5,020 

5,560 

6,370

6,010 

5,970 

5,710 

5,490 

5,390 

5,490

Feb.

5,410 

5,620 

5,790 

5,340 

5,110

5,140 

5,370 

5,580 

4,170 

4,240

4,870 

5,720 

5,590 

5,790 

6,080

6,720 

6,720 

6,690 

6,310 

6,420

6,800 

6,680 

6,310 

7,010 

6,370

5,870 

5,740 

5,530

Month

Goto 

Nove 

Deoe

Ca

janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

5,340 

5,300 

5,380 

5,400 

5,290

5,780 

6,470 

6,960 

7,310 

7,180

6,270 

7,090 

7,000 

7,260 

8,820

9,810 

10,700 

11,000 

10,700 

11,200

11,200 

11,500 

11,500 

11,800 

11,800

11,400 

11,400 

11,700 

11,700 

12,000 

12,200

Apr.

11,800 

11,500 

11,600 

12,000 

12,000

12,100 

12,'100 

12,100 

11 , 500 

11,200

11,500 

11,400 

11,600 

12,100 

11,800

10,800 

10,200 

10,700 

11,000 

10,600

10,500 

10,100 

9,960 

9,930 

9,700

9,500 

9,480 

9,240 

8,570 

7,910

Secondfoot-days

236,970 

177,270 

152,470

2,937,870

167,910 

162,990 

278,460 

324,490 

268,670 

330,090 

358,700 

358,000 

280,770

3,096,790

May

8,430 

8,740 

9,120 

8,520 

7,350

7,670 

7,960 

7,630 

7,600 

7,660

8,130 

8,710 

8,980 

8,820 

8,760

8,460 

8,850 

8,710 

8,780 

8,540

8,410 

8,530 

9,050 

9,200 

9,470

9,790 

9,520 

9,480 

9,280 

9,130 

9,390

Maximum

9,660 

6,960 

5,830

12,200

6,370 

7,010 

12,200 

12, 100 

9,790 

12,200 

12,000 

12,400 

10,700

12,400

June

9,930 

10,300 

9,940 

10,200 

9,840

9,880 

10,100 

10,300 

10, 200 

10, 500

10, 500 

10,300 

10,900 

11,300 

10,800

10,900 

10,800 

10, 700 

10, 600 

11,300

11,800 

11,900 

12,000 

12,100 

12,200

12,200 

12,200 

12,200 

12,100 

12,100

July

11,900 

11,800 

11,800 

11,800 

11,800

11,600 

10,400 

10,4OO 

10,200 

10,100

11,200 

11,600 

11,800 

12,000 

11,900

11,900 

11,800 

11,900 

11,800 

11,800

12,000 

12,000 

12,000 

11,700 

11,400

11,600 

11,600 

12,000 

12,000 

11,600 

11,300

Minimum

6,350 

4,930 

3,880

3,660

4,850 

4,170 

5,290 

7,910 

7,350 

9,840 

10,100 

10,600 

7,970

3,880

Aug.

11,800 

11,900 

12,000 

12,200 

12,400

12,100 

11,900 

12,000 

12,100 

12,000

12,000 

11,900 

11,700 

11,500 

11,300

11,500 

11,400 

11,500 

11,600 

11,400

11,200 

11,300 

11,400 

11,400 

11,300

11,100 

11,100 

11,000 

10,800 

10, 600 

10,600

He an

7,644 

5,909 

4,918

8,049

5,416 

5,821 

8,983 

10,820 

8,667 

11,000 

11,570 

11,550 

9,359

8,484

Sept.

10,700 

10,700 

10,500 

10,100 

10, 200

10,300 

10,400 

9,840 

9,940 

9,510

9,070 

8,810 

8,970 

9,040 

8,880

8,670 

8,740 

9,000 

9,420 

7,970

9,090 

9,200 

8,460 

8,980 

9,120

9,020 

9,160 

9,130 

8,850 

9,000

Runoff In 

acre-feet

470,000 

351,600 

302,400

5,827,000

333,000 

323,300 

552,300 

643,600 

532,900 

654, 700 

711,500 

710,100 

556,900

6,142,000
50 DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM

All-American Canal above Pilot Knob wasteway, Calif.

Location.--Water-stage recorder, lat. 32°45'00", long. 114 e 42'20", in NW^SE^ sec. 24, T. 

TF~S7, R. 21 E. San Bernardino meridian, at bridge on U. S. Highway 80, 1.1 miles upstream from Pilot Knob wasteway, 5 miles downstream from turnout to Yuma Main Canal, 

5j miles northwest of Yuma, and 19| miles downstream from intake at Imperial Dam. Datum of gage is 148,52 feet above mean sea level, datum of 1929. Auxiliary water-stage 

recorder, in NE^NW^- sec. 15, T. 16 S., R. 22 E., on wash overshoot structure 4.4 miles 

upstream.

Records available.--October 1938 to September 1950.

Extremes. Maximum daily discharge during year, 10,600 second-feet Aug. 4, maximum gage 

height, 16.35 feet Apr. 20; minimum daily discharge, 2,070 second-feet Dec. 11.

1938-50: Maximum daily discharge, that of Aug. 4, 1950; maximum gage height, 19.91 

feet Apr. 1, 1945; no flow on several days since continuous operation began Sept. 18, 

1940.

Remarks. Records excellent. Discharge computed by using fall as determined by auxiliary 

water-stage recorder as a factor. First flow in All-American Canal g,t this point 

began Feb. 5, 1939. The water passing this station, except for the flow through Pilot 

Knob wasteway (p. 54), is used for irrigation in the Imperial and Coachella Valleys 

in the Salton Sea Basin.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

7,310 

6,490 

6,390 

6,180 

6,000

5,660 

6,110 

6,200 

5,850 

5,500

5,150 

5,480 

5,330 

5,280 

5,410

5,400 

5,140 

4,970 

5,100 

5,050

5,070 

4,880 

4,500 

4,220 

4,510

4,620 

5,230 

5,450 

5,200 

4,700 

4,620

Nov.

4,540 

4,610 

4,440 

4,590 

4,640

4,400 

4,250 

4,200 

4,130 

4,100

3,840 

3,440 

3,760 

3,870 

3,860

3,920 

3,930 

3,850 

3,860 

3,320

3,290 

3,530 

3,490 

3,160 

3,150

3,340 

3,040 

3,020 

2,930 

2,860

Dec.

2,870 

2,940 

2,880 

2,800 

2,820

2,890 

3,100 

2,810 

2,270 

2,200

2,070 

2,140 

2,470 

2,740 

2,920

3,030 

2,880 

2,720 

2,580 

2,910

2,750 

3,400 

3,390 

2,660 

2,120

2,330 

2,610 

3,190 

3,330 

3,590 

3,310

Jan.

2,990 

3,010 

2,900 

3,530 

3,520

3,430 

3,350 

3,190 

2,910 

3,100

3,140 

3,440 

3,380 

3,350 

3,100

2,710 

2,660 

2,880 

2,830 

3,080

2,990 

2,990 

2,800 

3,470 

4,120

3,840 

3,830 

3,690 

3,070 

3,120 

3,530

Feb.

3,360 

3,470 

3,710 

3,400 

3,020

3,080 

3,300 

3,440 

3,690 

3,830

3,960 

3,730 

3,500 

3,730 

4,030

4,570 

4,570 

4,520 

4,190 

4,300

4,600 

4,480 

4,090 

4,720 

4,190

3,780 

3,750 

3,460

Month

Octo 

Move 

Dece

Ca

Janu 

Pebn 

Hare 

Aprl 

Hay.

June 

July 

Augu 

Sept

Wa

lendar year 1949 

siry

.......................

nary

ter year 1949-5O .......................

Har.

3,280 

3,190 

3,260 

3,290 

3,230

3,490 

4,180 

4,600 

4,990 

4,920

4,040 

4,720 

4,630 

4,980 

6,600

7,840 

8,510 

8,960 

8,460 

8,770

8,840 

8,990 

9,000 

9,390 

9,320

8,990 

9,060 

9,340 

9,370 

9,590 

9,860

Apr.

9,480 

9,120 

9,150 

9,590 

9,660

9,850 

9,820 

9,800 

9,260 

8,960

9,200 

9,130 

9,340 

9,880 

9,560

8,730 

8,060 

8,460 

8,900 

7,730

8,340 

,880 

,740 

,880 

,500

,190 

,140 

,000 

6,330 

5,760

Secondfoot-days

167,000 

113,360 

86,720

2,110,000

99,950 

108,470 

207,690 

256,440 

197,650 

263,130 

294,910 

292,270 

213,340

2,300,930

May

5,960 

6,420 

6,800 

6,380 

5,360

5,600 

5,860 

5,520 

5,530 

5,460

5,870 

6,390 

6,590 

6,520 

6,450

6,190 

6,350 

6,430 

6,280 

6,1OO

6,030 

6,170 

6,710 

6,900 

7,100

7,440 

7,160 

7,100 

6,930 

6,940 

7,110

Maximum

7,310 

4,640 

3,590

9,830

4,120 

4,720 

9,860 

9,880 

7,440 

10,000 

10,500 

10,600 

8,570

10,600

June

7,440 

7,930 

7,590 

7,910 

7,610

7,630 

7,800 

7,950 

7,910 

8,180

8,190 

8,080 

8,690 

8,930 

8,930

8,790 

8,750 

8,590 

8,540 

9,240

9,670 

9,840 

9,890 

9,940 

10,000

9,930 

9,930 

9,890 

9,760 

9,600

Minimum

July

9,450 

9,320 

9,450 

9,450 

9,430

9,310 

8,090 

7,970 

7,820 

7,680

8,740 

9,320 

9,910 

10,400 

10,400

10,500 

10,300 

10,300 

10,400 

9,940

9,940 

10,000 

9,920 

9,580 

9,160

9,250 

9,640 

10,300 

10,100 

9,620 

9,220

4,220 

2,860 

2,070

1,520

2,660 

3,020 

3,190 

5,760 

5,360 

7,440 

7,680 

8,510 

5,640

2,070

Aug.

9,690 

9,850 

10,100 

10,600 

10,500

1O,OOO 

9,760 

9,980 

10,000 

9,800

9,830 

9,660 

9,410 

9,260 

9,090

9,430 

9,400 

9,400 

9,520 

9,020

8,970 

9,080 

9,280 

9,320 

9,080

8,860 

8,780 

8,830 

8,750 

8,510 

8,510

Mean

5,387 

3,779 

2,797

5,781

3,224 

3,874 

6,700 

8,548 

6,376 

8,771 

9,513 

9,428 

7,111

6,304

Sept.

8,570 

8,380 

8,140 

7,790 

7,800

8,010 

8,02O 

7,560 

7,710 

7,330

6,770 

6,660 

6,850 

6,830 

6,680

6,380 

6,430 

6,730 

7,240 

5,640

6,660 

7,000 

6,060 

6,700 

6,990

6,830 

6,990 

6,980 

6,770 

6,840

Runoff In 

acre-feet

331,200 

224,800 

172,000

4,185,000

198,200 

215,100 

411,900 

508,600 

392,000 

521,900 

584, 900 

579,700 

423,200

4,564,000
DIVERSIONS AND RETURN PLOWS AT AND BELOW IMPERIAL DAM 51

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

Location.--Water-stage recorders on forebay and tailrace at power plant, lat. 32°46'35", 

long. 114°38 I 05", In SE^SEf sec. 10, T. 16 S., R. 22 E. San Bernardino meridian, 500 

feet from turnout in All-American Canal to Yuma Main Canal, 4 miles north of Yuma, and 

14j miles downstream from intake of All-American Canal at Imperial Dam. Datum of each 

gage is at mean sea level, Yuma project datum, or 0.70 foot above mean sea level, datum 

of 1929 (subject to undetermined changes caused by earthquake of May 18, 1940).

Records available. July 1926 to September 1950 (prior to October 1938 monthly discharge 

only, puoiished in Water-Supply Paper 1049).

Extremes. Maximum daily discharge during year, 2,010 second-feet on several days in 

October and July 2; minimum daily, 10 second-feet Feb. 9, 10.

1930-50: Maximum daily discharge, 2,040 second-feet Nov. 11, 1943; no flow on some 

days in 1937, 1938, 1939, 1945.

Remarks.--Records excellent. Daily discharge determined from flow through turbines, computed from relation between discharge, head, and gate openings. Bypass discharge 

through waste gates is included in record. Rating of turbines checked by current-meter 

measurements. 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. Water 

not needed for irrigation on Yuma project is returned to Colorado River through Yuma 

Main Canal wasteway, 3t 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 last two columns of monthly table.

Cooperation. Record of turbine gate openings and diversions furnished by Bureau of 

Reclamation.

Discharge, in second-feet, water year October 1949 to September 195O

Day

a

2

3

4

5

6

7

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.

2,000

2,OOO

2,000

2,000

2,OOO

2,010

2,000

2,OOO

2,000

2,010

2,010

2,010

2,010

2,010

2,01O

2,010

1,990

1.99O

1,99O

1,990

1,990

1,990

1,990

1,51O

1,990

1,990

1,990

2,OOO

2,000

2,OOO

2,000

Nov.

2,000

2,000

2,000

2,000

2.OOO

2,000

1.8OO

1,770

1,840

1,880

1,910

1,920

1,910

1,850

1,850

1,88O

1,920

1,960

1,980

1,990

1,860

1,860

1,910

1,93O

1,94O

1,950

1,980

1,870

1,850

1,910

-

Month

October. ............

November. ...........

December. ...........

Calendar year 1949

January. ............

March. ..............

April..... ..........

May. ................

July. ...............

September. ..........

Water year 1949-5O

Dec.

1,94O

1,960

1,970

1,980

1,840

1,870

1,930

1,960

1,980

1,980

1,470

1,930

1,950

1,950

1,980

1,990

1,960

1,960

1,910

1,940

1,980

1,98O

1,980

1,980

1,990

1,980

1,920

1,910

1,95O

1,960

1,970

Jan.

1,980

1,900

1,9OO

1,910

1,910

1,95O

1,970

1,960

1,85O

1,850

1,910

1,940

1,960

1,960

1,960

1,840

1,920

1,910

1,940

1,970

1,970

1,970

1.85O

1,850

1,890

1,920

1,960

1,970

1,960

1,830

1,830

Secondfootdays

61,490

57,520

60.O5O

727,600

59,490

^47,877

57,770

55,860

58,970

57,010

51,970

55 , 080

56,450

679,637

Feb.

1,880

1,920

1,950'

1,960

1,970

1,830

1,830

1,850

10

10

607

1,940

1,840

1,84O

1,860

1,900

1,930

1,95O

1,960

1,810

1,790

1,810

l,88fl

1,950

1,970

1,960

1,85O

1,82O

_

_

-

Maximum

2,O10

2,, OOO

1,990

2,030

1,980

1.97O

1,970

1,940

1,960

1,960

2,010

2.0OO

2,000

2,010

Mar.

1,850

1,930

1,940

1,940

1,940

1,820

1,830

1,900

1,95O

1,960

1,960

1,970

1,820

1,81O

1,820

1,88O

1,940

1,96O

1,300

1,800

1,790

1,810

1,820

1,89O

1,920

1,930

1,820

1,810

1,870

1,880

1,910

Minimum

1,51O

1,770

1,470

1,470

1,830

10

1,300

1,75O

1,820

1.8OO

1,OOO

1,100

1,690

10

Apr.

1,910

1,910

1,790

1,750

1,780

1,820

1,900

1,910

1,920

1,800

1,780

1,800

1,820

1,860

1,920

1,930

1,810

1,800

1,880

1,890

1,900

1,920

1,920

1.8OO

1,810

1,850

1,870

1,930

1,940

1,940

-

Mean

1,984

1,917

1,937

1,993

1,919

1,710

1,864

1,862

1,902

1,900

1,676

1,777

1,882

1,862

May

1,830

1,850

1,910

1,940

1,940

1,940

1,940

1,860

1,850

1,88O

1,940

1,95O

1,960

1,960

1,840

1,830

1,860

,920

,960

,960

,960

,84O

,850

,890

1,950

1,960

1,960

1,960

1,830

1,820

1,830

June

1,910

1,950

1,960

1,960

1,840

1,830

1,860

1,89O

1,950

1,960

1,960

1,850

1,830

1,840

1,900

1,950

1,960

1,960

1,830

1,800

1,850

1,890

1,93O

1,950

1,950

1,870

1,850

1,87O

1,910

1,950

Runoff in 

acre-feet

122,000

114,100

119,100

1,443,000

118,000

94.96O

114,600

110,800

117,OOO

113,100

1O3.100

109,2OO

112,000

1,358, OOO

-

July

2,000

2,O1O

1,850

1,840

1,870

1,950

1,970

1,990

2,OOO

1,910

1,910

1,890

1,380

1,010

1,030

1,000

1,080

1,020

1,010

1,430

1,600

1,610

1,830

1,850

1,880

1,940

1,850

1,520

1,980

1,990

1,770

Aug.

1,780

1,880

1,530

1,100

1,710

2,000

1,790

1,650

1,770

1,88O

1,930

1,930

1,960

1,810

1,830

1,790

1,65.0

1,790

1,880

1,990

1,810

1,62O

1,780

1,840

1,970

1,99O

1,990

1,770

1,53O

1,53O

1,600

Sept.

1,69O

1,950

2,000

1,860

1,850

1,910

1,930

1,970

1,990

1,99O

1,840

1,82O

1,86O

1,910

1,960

1,930

1,930

1,800

1,790

1,820

1,840

1,900

1,910

1,940

1,80Q

1,780

1,820

1,860

1,900

1,900

-

Diversions in acre-feet

Above power 

plant

3,850

4,890

2,650

55,740

4,080

4,950

6,160

6,28O

5,150

5,640

5,730

6,24O

5,470

61,O9O

Between power 

plant and

wasteway

133

218

216

4,650

145

282

307

301

264

242

309

381

377

3,180
52 DIVERSIONS AND RETURN FLOyS AT AND BELOW IMPERIAL DAM

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

Location. Two gages determine head on Colorado River siphon. At Intake, water-stage 

 recorder, lat. 32°43'50", long. 114°37'10", In SW&Ef sec. 26, T..16 S., R. 22 E. 

San Bernardlno meridian, on California side of river, 1,645 feet downstream from 

center of-Yuma Main Canal wasteway gates, and 3i miles downstream from siphon-drop 

power plant. At outlet, water-stage recorder In NW^NE^ sec. 35, T. 16 S., R. 22 E. 

San Bernardlno meridian, on Arizona side of river. Botk."gages are a quarter of a 

mile downstream from highway bridge over Colorado River at Yuma. Datum of each gage 

Is 100.03 feet above mean sea level, Yuma project datum, or 100,57 feet, datum of 

1929.

Records available. January 1924 to September 1950 (prior to October 1938 monthly discharge only, published In Water-Supply Paper 1049).

Extremes.--Maximum dally discharge during year, 763 second-feet Sept. 19, 20; no flow

1930-50: Maximum dally discharge, 855 second-feet Mar. 2,4, 1931; no flow during 

short periods In most years.

Remarks. Records excellent except those below 100 second-feet, which are poor. Dally 

discharge computed from relation between discharge and head on siphon, which Is the 

difference between stages at Intake and outlet gages. Records show quantity of water 

delivered through Colorado River siphon for Irrigation on the Valley division of the 

Yuma project and for supplementary municipal supply for city of Yuma. Records for 

chemical analyse* for the water year 1950 are given In Wate'r-Supply Paper 1189.

Cooperation.--Record of diversion for supplementary municipal supply for city of Yuma 

collected by Arizona Edison Co.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

690

693

687

685

680

677

680

678

697

684

675

674

683

686

665

643

627

675

672

676

676

666

644

628

699

693

674

594

552

554

598

Nov.

603

577

617

611

600

593

691

693

678

648

554

469

450

584

590

521

529

499

430

395

512

506

550

479

446

423

406

567

566

515

-

Dec.

473

433

432

392

544

555

528

433

323

302

163

65

109

336

505

437

405

375

533

540

536

471

308

5

5

14

553

549

524

454

408

Month

October ...................

November ..................

December ..................

Calendar year 1949 ......

January ...................

February. .................

March .....................

April .....................

May.... ...................

June ......................

July... ...................

August ....................

September .................

Water year 1949-50......

Jan.

363

495

523

583

538

568

559

337

207

236

202

167

274

448

436

633

641

585

502

468

434

204

197

240

212

199

288

475

477

619

598

Feb.

531

496

474

485

485

648

681

647

15

0

22

406

603

669

705

732

655

615

558

628

665

657

554

455

369

355

599

540

_

-

Secondfoot -days

20,505

16,302

11,710

199,939

12,708

14,239

15,671

16,272

14,330

14,885

12,646

18,309

19,267

186,844

Mar.

454

3.49

242

309

448

583

497

495

526

517

432

331

608

624

575

510

410

342

286

581

662

652

632

608

420

350

637

675

707

646

563

Apr.

424

371

667

736

667

625

578

464

.397

647

680

610

577

527

417

279

643

674

672

603

524

462

396

597

693

594

545

478

423

312

-

May

503

573

553

522

467

276

258

302

429

515

514

499

539

482

525

525

521

518

436

264

204

529

526

504

496

455

364

321

540

598

572

Discharge in second-feet

Maximum

699

693

555

744

641

722

707

726

598

596

549

694

763

763 '

Minimum Mean

627 661

395 543

5 378

5 548

197 410

0 509

242 506

279 542

204 462

340 496

69 408

392 591

383 642

0 512

June

532

557

526

422

509

518

470

505

481

400

340

542

565

525

553

521

448

350

488

511

563

568

473

401

364

509

562

596

581

595

-

July

94

69

127

202

536

538

490

393

334

355

346

375

332

398

482

511

549

508

506

454

454

421

338

472

537

520

533

494

386

366

526

Runoff in

acre-feet

40,670

32,330

23,230

396,600

25,210

28,240

31,080

32,280

28,420

29,520

25,080

36,320

38,220

370,600

Aug.

614

632

655

598

475

392

584

584

581

565

536

525

506

634

638

694

684

636

644

562

668

680

660

658

587

436

406

620

620

615

620

Sept.

535

409

383

576

552

517

533

541

526

472

656

675

680

702

744

718

706

744

763

763

760

758

734

718

744

725

722

710

622

579

-

Diversion for

Yuma municipal

supply 

(acre-feet)t

24

0

.5

1 1,500

1.4

141

201

116

70

450

77

126

38

1,240

t Included in first five columns of table.
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 53

Yuraa Main Canal wasteway at Yuma, Ariz.

Location.--Yuma Main Canal wasteway receives water from Yuma Main Canal at gates, lat.

a^"44'00", long. 114°37'20", in SW^SE^ sec. 26, T. 16 S., R. 22 E. San Bernardino meridian, 1,645 feet upstream from intake of Colorado River siphon on Yuma Main Canal, half a 

mile north of Yuma, and STT miles downstream from siphon-drop power plant on Yuraa Main 

Canal. The wasteway discharges into Colorado River half a mile downstream from station 

on Colorado River at Yuma.

Records available. April 1913 to September 1950.

Extremes.--Maximum daily discharge during year, 1,980 second-feet Dec. 24, 25; no flow Feb.

1930-50: Maximum daily discharge, 2,020 second-feet Dec. 24, 25, 1948; no flow for 

several days in 1937, 1938, 1939, 1945, 1950.

Remarks.--Records good. Discharge computed as difference between discharge of Yuraa 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 not include flow of California drainage canal which discharges into the 

wasteway a quarter of a mile above its mouth.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4

5

6 

7 

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.

1,310 

1,310 

1,310 

1,310 

1,310

1,320 

1,310 

1,310 

1,300 

1,320

1,330 

1,340 

1,330 

1,320 

1,350

1,370 

1,360 

1,310 

1,320 

1,310

1,310 

1,320 

1,350 

880 

1,290

1,300 

1,320 

1,410 

1,450 

1,450 

1,400

Nov.

1,390 

1,410 

1,380 

1,390 

1,400

1,410 

1,110 

1,060 

1,160 

1,230

1,350 

1,450 

1,460 

1,260 

1,250

1,360 

1,390 

1,460 

1,550 

1,590

1,340 

1,350 

1,360 

1,440 

1,490

1,530 

1,570 

1,300 

1,280 

1,390

Dec.

1,460 

1,530 

1,530 

1,590 

1,300

1,310 

1,400 

1,530 

1,560 

1,680

1,310 

1,870 

1,840 

1,610 

1,460

'1,550 

1,560 

1,580 

1,370 

1,390

1,440 

1,510 

1,670 

1,980 

1,980

1,970 

1,360 

1,350 

1,420 

1,500 

1,550

Jan.

1,620- 

1,400 

1,380 

1,330 

1,370

1,380 

1,410 

1,620 

1,640 

1,610

1,700 

1,770 

1,680 

1,510 

1,520

1,200 

1,270 

1,320 

1,440 

1,500

1,540 

1,770 

1,650 

1,610 

1,680

1,720 

1,670 

1,500 

1,480 

1,200 

1,220

Feb.

1,340 

1,420 

1,470 

1,470 

1,480

1,180 

1,150 

1,200 

0 

10

585 

1,530 

1,230 

1,170 

1,150

1,170 

1,270 

1,330 

1,390 

1,170

1,120 

1,140 

1,320 

1,490 

1,590

1,600 

1,240 

1,270

Month

Goto 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lender year 1949

ter year 1949-50 .......................

Mar.

1,390 

1,580 

1,700 

1,630 

11 490

1,230 

1,330 

1,400 

1,420 

1,440

1,530 

1,640 

1,210 

1,180 

1,240

1,370 

1,530 

1,620 

1,010 

1,200

1,110 

1,150 

1,180 

1,270 

1,500

1,580

1,180 

1,120 

1,150 

1,230 

1,340

Apr.

1,490

1,540 

1,120 

1,020 

1,100

1,190 

1,310 

1,450 

1,520 

1,140

1,080 

1,180 

1,240 

1,330 

1,500

1,650 

1,160 

1,120 

1,200 

1,280

1,370 

1,460 

1,520 

1,190 

1,110

1,250 

1,320 

1,450 

1,520 

1,630

Secondfoot-days

40,930 

41,110 

48,160

525,220

46,710 

33,485 

41,950 

39,440 

44,510 

42,020 

38,960 

36,564 

37,000

490,839

May

1,320 

1,270 

1,350 

1,420 

1,470

1,660 

1,680 

1,560 

1,410 

1,360

1,420 

1,440 

1,420 

1,480 

1,310

1,300 

1,330 

1,400 

1,520 

1,700

1,760 

1,300 

1,310 

1,380 

1,450

1,500 

1,600 

1,640 

1,280 

1,210 

1,260

Maximum

1,450 

1,590 

1,980

2,010

1,770 

1,600 

1,700 

1,650 

1,760 

1,620 

1,940 

1,610 

1,600

1,980

June

1,370 

1,390 

1,430 

1,540 

1,320

1,300 

1,380 

1,380 

1,470 

1,560

1,620 

1,300 

1,260 

1,310 

1,340

1,430 

1,510 

1,610 

1,340 

1,290

1,290 

1,320 

1,460 

1,550 

1,590

1,360 

1,270 

1,270 

1,320 

1,440

Minimum

July

1,910 

1,940 

1,710 

1,620 

1,320

1,410 

1,480 

1,590 

1,460 

1,550

1,560 

1,510 

1,050 

610 

550

490 

520 

500 

500 

970

1,140 

1,190 

1,490 

1,380 

1,330

1,410 

1,300 

1,020 

1,590 

1,620 

1,240

880 

1,060 

1,300

880

1,200 

0 

1,010 

1,020 

1,210 

1,260 

490 

500 

1,030

0

Aug.

1,150 

1,240 

870 

500 

1,240

1,610 

1,190 

1,050 

1,180 

1,300

1,380 

1,400 

1,450 

1,170 

1,170

1,080 

970 

1,150 

1,240 

1,430

1,130 

519 

1,100 

1,180 

1,380

1,550 

1,580 

1,150 

910 

915 

980

Mean

1,320 

1,370 

1,554

1,439

1,507 

1,196 

1,353 

1,315 

1,436 

1,401 

1,257 

1,179 

1,233

1,345

Sept.

1,160 

1,540 

1,600 

1,260 

1,270

1,390 

1,390 

1,420 

1,460 

1,520

1,170 

1,130 

1,160 

1,200 

1,210

1,200 

1,220 

1,050 

1,030 

1,050

1,070 

1,140 

1,180 

1,220 

1,050

1,060 

1,100 

1,150 

1,280 

1,320

Runoff in 

acre-feet

81,180 

81,540 

95,520

1,042,000

92,650 

66,420 

83,210 

78,230 

88,280 

83,350 

77,280 

72,520 

73,390

973,600
54 DIVERSIONS AND RETURN PLOWS AT AMD BELOW IMPERIAL DAM

Pilot Knob wasteway near Pilot Knob, Calif.

Location,--Tape gages on wasteway gates to show openings, lat. 32°44'15", long. 114 0 42'55", 

in NW^SW-J- sec. 25, T. 16 S., R. 21 E. San Bernardino meridian, 2 miles east of summit 

of Pilot Knob, 6 miles west of Yuma, Ariz., and 20.8 miles downstream from intake of 

All-American Canal at Imperial Dam. Auxiliary water-stage recorder on Ail-American 

Canal, 550 feet upstream from wasteway gates, to show head. Datum of auxiliary gage is 

at mean sea level, datum of 1929.

Records available.--February 1939 to September 1950. Prior to 1944, flow, by periods, 

pudiisned in water-Supply Paper 1009.

Extremes. Maximum daily discharge during year, 4,650 second-feet Aug. 10; no flow Oct. 7

1939-50: Maximum daily discharge, that of 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 

measured flow made above and below the 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 occurred Feb. 5, 1939.

Cooperation.--Record of gate openings furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 1'5

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1,58O 

1,15O 

953 

90O 

698

2O4 

0

0 

O 

0

0 

0 

0

o 

o

o 

o

0 

0 

0

0 

0 

0 

0 

0

o 

o

0 

0 

0 

0

Nov. Dec. Jan. Feb.

Month

Octo 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1941 

apy

1.......................... .............

ter year 1949-so .......................

Mar.

0 

0 

O 

0 

0

0 

0 

0 

0 

0

o 

o 

o 

o

1,410

2,770 

3.07O 

3,650 

3,910 

4,030

4,000 

4,000 

4,OOO 

4,010 

4,010

4,010 

4,010 

4,010 

3,990 

4,000 

4,010

Apr.

3,980 

3,990 

4.OOO 

4,010 

4,01O

3,990 

4,010 

4,OOO 

3,990 

4,010

4,OOO 

3,880 

3,700 

3,710 

3,700

3,540 

3,BZO 

3,090 

2,910 

2,610

2,500 

2,400 

2,220 

2,2OO 

2,110

1,970 

1,910 

1,760 

1,440 

1,400

Secondfoot-days

5,485 

0 

0

559,901

0 

0 

62,890 

94,260 

34,081 

103,020 

131,080 

136,160 

70,499

637.475

May

1,400 

1,310 

1,110 

765 

610

545 

5O2 

499 

5OO 

494

499 

520 

863 

1,120 

1,15O

839 

704 

702 

752 

897

1,010 

1,230 

1,400 

1.54O 

1,680

1,720 

1,780 

1,840 

1,940 

2,000 

2,160

Maximum

1,580 

0 

0

4,020

0 

0 

4,010 

4,010 

2,160 

4,200 

4,480 

4,650 

3,760

4.650

June

2,210 

2,210 

2,35O 

2,580 

2,71O

2,8OO 

2,880 

2,990 

3,000 

2,940

3,020 

3.30O 

3,430 

3,470 

3,460

3,470 

3,650 

3,860 

3,950 

3,960

4,000 

4,100 

3,900 

3,800 

4,04O

4,190 

4,200 

4,190 

4,200 

4,160

Minimum

July

0 

0 

0

0

0 

0 

0 

1,400 

494 

2,210 

3,970 

3,660 

472

0

4,000 

4,000 

4,010 

4,010 

4,OOO

4,000 

3,970 

4,030 

4,160 

4.2OO

4,250 

4,270 

4,020 

4,250 

4,260

4,250 

4,240 

4,260 

4,240 

4,240

4,260 

4,330 

4,40O 

4,390 

4,390

4,400 

4,450 

4,450 

4,410 

4,460 

4,480

Aug.

4,430 

4,400 

4,400 

4,41O 

4,410

4,510 

4,55O 

4,550 

4,620 

4,650

4,640 

4,540 

4,370 

4,290 

4,260

4,430 

4,420 

4,470 

4,500 

4,490

4,500 

4,480 

4,410 

4,400 

4,400

4,360 

4,310 

4,290 

4,170 

3,840 

3,660

Mean

177 

0 

0

1,534

0 

0 

2,029 

3,142 

1,099 

3,434 

4,228 

4,392 

2,350

1.747

Sept.

3,660 

3,760 

3,710 

3,690 

3,700

3,570 

3,540 

3,460 

3,360 

3,210

2,980 

2,870 

2,720 

2,430 

2,180

2,O20 

1,960 

1,950 

1,920 

472

1,280 

1,620 

717 

1,480 

1,610

1,320 

1,270 

1,320 

1,350 

1,370

Runoff In 

acre-feet

10,880 

0 

0

1,111,000

0 

0 

124, 700 

187,000 

67,600 

204,300 

260,000 

270,100 

139,800

1.264.000
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 55

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

Location,--Canal diverts from Arizona end of Laguna Dam, lat. 32°49 I 05", long. 114°29'15", 

 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 1950. Prior to October 1948, published as 

Diversions at Laguna Dam, Ariz.-Calif.

Remarks. Water is used for irrigation of North Gila Valley, which lies north of Gila 

RTver in Arizona. Records, show quantity of water diverted from Colorado River less 

that wasted back to river by regulation 500 feet below headgate. Records 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 NE£NW£ sec. 9, T. 85., R. 22 W., 5 miles downstream from Laguna Dam and" 14 miles 

upstream from gage on Colorado River at Yuma. Record of drainage flow computed by 

Geological Survey from 50 discharge measurements furnished by Bureau of Reclamation.

Two wasteways return excess water at lower end of North Gila Valley District to 

Colorado River in SEjSW-j 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 the Gila River channel in NE-jjNWir sec. 22, 

T. 8 S., R. 22 W. Record computed from daily estimates by watermaster. Approximately one half of the total wasteway flow was returned to Colorado River and one half to 

Gila River channel. None of the return flow to Gila River channel reached Colorado 

River as surface ,flow this year.

Cooperation.--Records of discharge except for Drain No. 1 furnished by Bureau of Reclamation.

Monthly diversion, water year October 1949 to September 1950

Month

Calendar year 1949.

May. .................

September ............

Water year 1949-5O.

Discharge In second-feet

Maximum

70 

70 

7O

70

70 

70 

70 

70 

70 

70 

70 

60 

70

70

Minimum

0 

O 

O

0

ooooooooo

*

0

Mean

49.3 

55.9 

46.8

55.5

57.1 

58.2 

58.7 

59.0 

56.8 

50.3 

56.1 

48.4 

57.3

54.4

Runoff In

aore-feet

3,030 

3,320 

2,880

40,180

3,510 

3,230 

3,610 

3,510 

3,490 

3.00O 

3,450 

2,980 

3,410

39,420

Return flows In acre-feet

Drain 

No. 1

609

446 

371

4,418

325 

284 

349 

357 

311 

329 

313 

307 

474

4,480

Canal 

wasteways

218 

298 

337

4,840

456 

476 

397 

258 

476 

238 

327 

119 

436

4,040
56 DIVERSIONS AND RETURN PLOWS AT AND BELOW IMPERIAL DAM

Alamo Canal at Andrade, Calif.

Location. Staff gage supplemented by water-stage recorder, lat. 32"43'10", long.

114"43'30", In SW$SE£ sec. 35, T. 16 S., R. 21 E. San Bernardino meridian at Andrade, 

200 feet upstream from International boundary, 800 feet downstream from Hanlon heading, 

and ITT miles downstream from Rockwood gate.

Records available. January 1908 to November 1950 (discontinued).

Remarks.--Figures given herein are those of total flow and are generally computed as the 

mean of two current-meter measurements made daily.

In accordance with the Treaty of 1944 with Mexico, delivery of water to Mexico 

through Rockwood and Hanlon gates stopped on Nov. 8, 1950, and began at Morelos Dam.

Canal received most of its water from Pilot Knob wasteway (see p. 54 ), and also 

received some water from right side of Colorado River in SE|sw£ sec. 25, T. 16 S., 

R. 21 E. San Bernardino meridian, at Roekwood gate, 24^ miles downstream from Imperial 

Dam. All water from Oct. 1 to Oct. 5, 1949, and Mar. 16 to Nov. 7, 1950, was received 

from Pilot Knob wasteway. Water was used for irrigation of lands in Imperial Valley 

in Mexico. Waste and return flows from these lands flow Into Salton Sea by way of 

Alamo and New Rivers.

Hanlon heading is a separate set of gates on Alamo Canal, 1 mile below Pilot Knob 

wasteway, used to allow Pilot Knob wasteway water either to pass down canal or to be 

returned to Colorado River.

Cooperation. Records furnished by Imperial Irrigation District; seven discharge measurements made and records reviewed by Geological Survey.

Monthly discharge, In second-feet, 1949-SO

Month

December. ...............

Calendar year 1949....

February ................

April ...................

Water year 1949-50....

November 1-7 ............

Maximum

555

4,040

499

3,810

4,650

257

Minimum

297

O

23

497

0

171

Mean

412

1,814

3 442

4 379

2,330

1,963

2?4

Runoff in 

acre-feet

25,350

1,313,000

172 3OO

138,600

1,421,000

3.110
DIVERSIONS AND RETURN FLOWS AT AND BELOW IMPERIAL DAM 

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

57

Yuma project of the Bureau of Reclamation lies on both sides of the Colorado River In 

the vicinity of Yuma. The project has two parts, the Reservation Division in California 

and the Valley 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.

Records furnished by Bureau of Reclamation except Cooper wasteway March to September 

which was furnished by International Boundary and Water Commission. Nqne of these return 

flows are included in the record of the Colorado River x 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^SW^

sec. 26, T. 16 S., R. 22 E. San Bernardino meridian. 

Records available.--Monthly discharge January 1913 to April 1920, October 1921 to

March 1925, January 1934 to September 1950. 

Remarks. Record shows waste and drainage water from area east of Yuma Main Canal

on Reservation Division. Flow is not included in the record of the Yuma Main

Canal wasteway.

Araz drain.

Location. Enters the Colorado River in NE£NW£ 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 1950. 

Remarks.--Record shows waste and drainage water west of Yuma Main Canal on the

Reservation Division. Due to fairly constant drainage flow, record is obtained

by interpolation between discharge measurements, of which 44 were obtained

during year.

Cooper wasteway.

Location. water-stage recorder and weir, in NW^ sec. 33, T. 83., R. 24 W., half

a mile downstream from Morelos Dam.

Records available. Monthly discharge January 1934 to September 1950. 

Kemartcs. SnowiPwaste water from Valley Division returned to Colorado River.

Elevenmile wasteway.

Location. water-stage recorder and regulating gate, in SW^- sec. 8, T. 9 S., R. 24 

w., a£ miles downstream from Morelos Dam.

Records available. January 1924 to September 1950.

Kemarks. Discharge computed from gate openings and head, checked occasionally by 

current-meter measurements. Record shows waste water from Valley Division returned to Colorado River.

Twenty-one mile wasteway.

Location. Recording gage and weir, in NW£ sec. 35, T. 10 S., R. 25 W., 13 miles by

air line downstream from Morelos Dam. 

Records available October 1938 to September 1950. 

Kemartcs. Hecord shows waste water from Valley Division returned to Colorado River.

Main drain.

Location. Pumping plant in SE^NE^ 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 1950.

Kemarks. HecoWcomputed 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.

East Main Canal.

Location. Water-stage recorder and weir, in NW£SW£ 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 195U. 

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.

Monthly return flows, in acre-feet, from Yuma project, Arlz.-Calif., 

water year October 1949 to September 195O

Month

Calendar year 1949. ....

Water year 1949-5O. ....

California 

 drainage 

canal

55,490

4 7 9O

4,60O

53,380

Araz 

drain

5,50O

708

7,180

Cooper 

wasteway

2,160

419

3,350

Elevenmile 

wasteway

70,250

2 2 9O

1,420

42,020

Twentyone mile 

wasteway

571

12,550

591

122

1O.96O

Main 

drain

95,660

7,710

6,930

85,360

East 

Main

Canal

14,550

726

11,080
58 TRIBUTARIES ABOVE GUMISON RIVER

North Inlet at Grand Lake, Colo.

Location.--Water-stage recorder, lat. 40°15', long. 105°49', in NE^ sec. 5, T. 3 N., R. 75 

W., 300 feet downstream from Tonahutu Creek and 1,600-feet upstream from Grand Lake. 

Datum of gage is 8,434.48 feet above mean sea level (Bureau of Reclamation bench mark).

Drainage area.--46.6 square miles.

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

lybu.

Extremes. Maximum discharge during year, 758 second-feet June 16 (gage height, 5.61 feet), 

rrom rating curve extended above 650 second-feet; minimum daily, 4.6 second-feet Mar. 

12-18, 24, 25.

1905-9, 1910-12, 1947-50: Maximum discharge, 960 second-feet June 18, 1949 (gage 

height, 6.18 feet), from rating curve extended above 650 second-feet; minimum daily, 

1.5 second-feet Feb. 5, 6, 1949.

Remarks. Records good except those for periods of ice effect, which are fair. No diversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

17 

18 

17 

17 

17

16 

15 

13 

12 

*10

11 

12 

12 

12 

12

11 

12 

15 

17 

14

10 

10 

10 

10 

10

11 

9.5 

9.0 

9.2 

8.2 

8.2

Nov.

9.0 

9.8 

9.2 

9.2 

9.2

9.0 

9.0 

9.0 

9.2 

9.0

*9.0 

8.5 

.8 

.8 

.8

.8 

.5 

.4 

.5

.5

.0 

.0 

.0 

.0 

.0

6.6 

6.6 

6.6 

6.6 

6.5

Dee.

6.4 

6.3

6.2 

6.2 

6.1

6.0 

6.0 

*6.0 

5.9 

5.8

5.8 

5.8 

5.8 

5.8 

5.8

S.8 

5.8 

5.8

5.7 

5.5

5.4 

5.4 

5.4 

5.4

5.5

5.6 

5.6 

5.8 

5.9 

6.0 

6.0

Jan.

6.0 

5.8 

5.6 

5.5 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

*5.4

5.5 

5.5 

5.6

5.7 

5.8 

5.8 

5.8 

5.8

5.8 

5.8 

5.8 

5.8 

5.8

5.8 

5.8 

5.8 

5.8 

5.8 

5.8

Feb.

5.7 

5.6 

5.6 

5.6 

5.6

5.6 

5.8 

5.8 

*5.8 

5.8

5.8

5.7 

5.7 

5.6 

5.6

5.5

5.5 

5.5

5.5 

5.3

5.2 

5.1 

5.1 

5.1 

5.1

5.1 

5.1 

5.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

h. ......................................

1..... ..................................

ter year 1949-50 .......................

Peak discharge (base, 35O sec. -ft.). June

Mar.

5.0 

5.0 

5.0 

5.0 

5.0

4.9 

4.S 

4.7 

4.7

4.7

4.7 

4.6 

4.6 

4.6 

4.6

*4.6 

4.6 

4.6 

4.7 

4.8

4.8 

4.7 

4.7 

4.6 

4.6

4.7 

4.7 

4.8 

5.0 

5.2 

5.2

Apr.

5.7 

5.9 

5.8 

5.8 

5.8

5.8 

6.0 

6.1 

6.3 

*6.6

6.7 

6.9 

.O 

.1 

.2

.4 

.9 

8.7 

10 

12

13 

16 

20 

24 

31

25

21 

18 

15 

15

Secondfoot-days

385.1 

238.1 

180.5

27,073.3

175.4 

153.4 

148.2 

338.7 

2,767 

8,991 

2,805 

582 

636.8

17,401.2

6 (12 p.m.)

May

13 

15 

*21 

32 

32

31 

26 

23 

20 

18

22 

32 

43 

59 

85

96 

129

165 

129 

125

151 

204 

237 

223

176

129 

99 

82 

72 

88 

190

Maximum

18 

9.8 

6.4

707

6.0 

5.8 

5.2 

31 

237 

506 

165 

32 

63

506

579 sec. -ft

June

257 

288 

239 

176 

224

387 

432 

329 

237 

290

409 

453 

429 

434 

429

476 

506 

375 

304 

253

242 

231 

231 

242 

230

200 

185 

172 

169 

162

July

158 

150 

165 

146 

137

133 

127 

116 

116 

125

160 

133 

111 

96 

82

74 

67 

69 

74 

60

57 

60 

53 

50 

47

45 

42 

41 

40 

37 

34

Minimum

8.2 

6.5 

5.4

1.5

5.4 

5.0 

4.6 

5.7 

13 

162 

34 

13 

8.5

4.6

Aug.

32 

31 

28 

27 

25

24 

23 

22 

21 

20

21 

20 

19 

19 

18

17 

17 

16 

15 

15

15 

15 

13 

13 

13

14 

15 

13 

15 

13 

13

Mean

12.4 

7.94 

5.82

74.2

5.66 

5.48 

4.78 

11.3 

89.3 

300 

90.5 

18.8 

21.2

47.7

.; June 16 (11:30 p.m

Sept.

13 

14 

14 

13 

12

11 

9.5 

8.5 

8.8 

10

13 

19 

17 

17 

21

23 

25 

23 

26 

63

45 

42 

36 

31 

28

22 

20 

19 

17 

16

Runoff in 

acre-feet

764 

472 

358

53,710

348 

304 

294 

672 

5,490 

17,830 

5,560 

1,150 

1,260

34,500

.) 758 sec.-

ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Oct. 22-24, 31, Nov. 1, 6-8, Nov. 12 to Apr. 24 

(no gage-height record Dec. 10 to Mar. 15j discharge computed on basis of 2 discharge measurements, 

weather records, and records for nearby stations).
TRIBUTARIES ABOVE GUNNISON RIVER 

East Inlet near Grand Lake, Colo.

59

Location.--Water-stage recorder, lat. 40°14 I , long. 105°48', In Nw"£ sec. 9, T. 3 N , R 75 

w -. 1,200 feet upstream from mouth and 1 mile southeast of town of Grand Lake.

Drainage area. 27.1 square miles.

Records available.--October 1947 to September 1950.

Extremes.--Maximum discharge during year, 609 second-feet June 16 (gage height 3 64 feet)- 

minimum dally, 1.7 second-feet Jan. 4-6.

1947-50: Maximum discharge, 710 second-feet June 17, 1949 (gage height, 3.90 feet): 

minimum dally determined, 1.5 second-feet Mar. 11 to Apr. 1, 1949.

Remarks. Records good except those for periods of Ice effect, which are fair, wo dlversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

8.8 

8.8 

8.8 

8.5 

8.1

8.1 

8.1 

7.7 

7.7 

*9.7

10 

10 

11 

13 

12

11 

12 

13 

15 

13

10 

10 

10 

9.2 

8.8

8.8 

8.1 

7.7 

8.1 

7.7 

7.7

Nov.

.0 

.0 

.0 

.0 

.0

.0 

.0 

.0 

.0 

6.6

*6.6 

6.6 

6.0 

5.5 

5.5

5.4 

5.4 

5.2 

5.2 

5.2

5.2 

5.0 

5.0 

4.9 

4.6

4.3 

4.0 

4.0 

4.0 

5.5

Dec.

3.6 

3.4

3.1 

3.1 

3.1

3.0 

2.7 

*2.4 

2.3 

2.3

2.3 

2.3 

2.2 

2.2 

2.2

2.2 

2.1 

2.2 

2.0 

2.0

1.9 

1.9 

1.9 

1.9 

1.9

2.0 

2.0 

2.0 

2.0 

2.0 

2.0

Jan.

2.0 

2.0

1.9 

1.7 

1.7

1.7 

1.8 

1.8 

1.8 1.'8

1.8 

*1.8 

1.8 

1.9 

1.9

1.9 

1.9 

1.9 

1.9 

1.9

1.9 

1.9 

1.9 

1.9 

1.9

1.9 

1.9 

1.8 

1.8 

1.8 

1.8

Feb.

1.8 

1.8 

1.9 

1.9 

2.0

2.1 

2.1 

2.1 

*2.1 

2.1

2.1 

2.2 

2.3 

2.3 

2.3

2.4 

2.5 

2.6 

2.6 

2.6

2.6 

2.7 

2.9 

3.0 

3.0

3.0 

3.0 

3.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 200 sec. -ft.}. May

June 16 UH30 p.m.; 609 sec. -ft.; June 24 ( 

* Winter discharge measurement made on th: 

Note. --Stage-discharge relation affected I 

(no gage-height record Dec. 9 to Apr. 9] die 

weather records, and records for nearby stat

Mar.

3.0 

3.0 

3.0 

3.0 

3.1

3.2 

3.3 

3.4 

3.6 

3.7

3.7 

3.7 

3.7 

3.8 

3.8

*3.8 

3.8 

3.8 

3.8 

3.8

3.8 

3.8 

3.6 

3.6 

3.5

3.4 

3.3 

3.3 

3.3 

3.4 

3.5

Apr.

3.6 

3,8 

4.0 

4.0 

3.8

3.8 

3.8 

3.9 

3.9 

4.0

4.2 

4.4

4.7 

4.7 

4.8

5.0 

6.6 

7.1 

8.0 

9.4

12 

15 

18 

17 

21

19 

17 

15 

14 

12

Secondfoot -day 3

300.4 

172.7 

72.2

18,659.1

57.4 

67.0 

108.5 

257.5 

1,826 

6,917 

2,217 

481.2 

503.3

12,980.2

nay

12 

11 

*14 

22 

22

20

16 

16 

16

16

16 

20 

24 

29 

42

54 

72 

94 

84 

85

94 

127 

168 

190 

139

92 

67 

52 

44 

58 

110

Maximum

15 

7.0 

3.6

588

2.0 

3.0 

3.8 

- 21 

190 

427 

139 

27 

50

427

June

164 

215 

202 

123 

127

235 

314 

248 

168 

218

335 

359 

338 

338 

362

394 

427 

320 

251 

200

183 

183 

179 

195 

183

154 

141 

Iw7 

118 

115

July

113 

111 

120 

105 

102

94 

92 

88 

91 

99

139 

113 

91 

78 

68

61 

55 

52 

55 

50

47 

48 

44 

43 

44

42 

39 

36 

35 

33 

29

Aug.

27 

26 

25 

24 

23

20 

21 

20 

20 

18

18 

18 

IS 

IS 

14

14 

14 

13 

12 

12

11 

11 

10 

9.7 

9.2

11 

11 

10 

10 

8.8 

8.S|

Minimum Mean

7.7 9.69 

4.0 5.76 

1.9 2.33

51.1

1.7 1.85 

1.8 2.39 

3.0 3.50 

3.6 8,58 

11 58.9 

116 231 

29 71.5 

8.5 15.5 

6.2 16.8

1.7 35.6

Sept.

7.7 

7.7 

7.7 

7.7 

6.6

6.6 

6.2 

6.6 

6.6 

8.5

8.8

13 

14 

13 

18

20 

20 

17 

21 

50

38 

38 

32 

26 

23

20 

17 

16 

14 

13

Runoff In 

acre-feet

596 

343 

143

37,010

114 

133 

215 

511 

3,620 

13,720 

4,400 

954 

998

25,750

23 (12 p.m.) 220 sec. -ft.; June 7 ( 2 a.m.) 369 sec. -ft.; 

1:30 a.m.) 230 sec. -ft. 

s day. 

y ice Oct. 22, 31, Nov. 1-8, 13, 16-23, Nov. 30 to May 4 

charge computed on basis of 3 discharge measurements, 

ions) .
60 TRIBUTARIES ABOVE GUNNISON RIVER

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

Location. Water-stage recorder and concrete control, lat. 40G 15 I , long. 105°SO | , in sec. 

 6, T. 3 N., R. 75 W., 300 fest 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 to September I960.

Extremes. Maximum discharge during period, 9.8 second-feet June 3 (gage height, 0.87 foot), 

rrom rating curve extended above 4.1 second-feet; minimum recorded, 0.9 second-foot Sept. 

8 (gage height, 0.28 foot).

Remarks. Records fair. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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. Hov. Dec. Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Th

lendar year

 period ................................

Peak discharge (base, 10 sec. -ft.)

Mar. Apr.

3.3 

3.3 

3.8 

3.2

3.4 

5.0 

4.Z 

3.8 

4.5

4.2 

4.0 

3.O 

2.2 

a2.1

a2.0 

a2.0 

a2.0 

a2.3 

a2.3

May

4.0 

3.9 

3.8 

4.5 

4.7

5.9 

5.0 

»4.7 

a4.4 

a4.2

4.5 

4.2 

5.4 

5.5 

6.6

6.2 

6.0 

6.2 

7.2 

6.6

4.5 

5.2 

5.4 

6.0 

5.7

5.4 

4.2 

2.4 

2.9 

2.8 

3.2

r^oT-Says -*» 

60.6 5.0 

151.2 7.2 

141. 0 6.8 

115.0 4.5 

70.0 3.2 

98.9 5.9

-

. No peak above base.

a No gage-height record; discharge computed on basis of weather rec

June

4.O 

4.7 

6.8 

5.7 

4.7

5.2 

4.8 

4.5 

5.4 

5.4

4.8 

5.0 

5.2 

4.7 

4.4

5.4 

4.5 

4.8 

4.8 

5.2

4.7 

4.2 

4.2 

4.2 

3.8

4.2 

4.0 

4.0 

3.9 

3.8

July

3.9 

4.0 

4.2 

4.2 

3.8

4.2 

4.0 

3.9 

4.4 

4.5

4.4 

3.9 

3.3

3.4 

3.0

2.8 

3.0 

3.2 

3.8 

3.8

4.0 

4.2 

3.9 

3.9 

3.2

3.3 

3.9 

3.6 

2.9 

3.2 

3.2

Aug.

3.2 

2.8 

2.2 

2.6 

3.0

3.O 

2.8 

2.8 

2.8 

2.4

2.5 

2.6 

2.4 

2.2 

2.2

1.9 

1.6 

1.6 

1.6 

2.0

2.3 

2.4 

2.2 

1.8 

1.8

2.0 

2.0 

2.0 

2.0 

1.7 

1.6

Sept.

1.4 

1.3 

1.2 

1.0 

1.0

1.2 

1.3 

l.O 

1.2 

1.6

2.4 

3.3 

3.6 

3.2 

3.9

4.8 

5.7 

5.0 

5.O 

5.9

5.4 

4.7 

4.2 

4.5 

4.0

3.9 

3.8 

4.2 

4.7 

4.5

Mini, Hean %£*£

2.O 3.19 120 

2.4 4.88 30O 

3.8 4.70 280 

2.8 3.71 228 

1.6 2.26 139 

1.0 3.20 196

1,260

ords and records for stations

on nearby streams.
TRIBUTARIES ABOVE GUHNISON RIVER 61

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

Location. Water-stage recorder and concrete control, lat. 40°ll t , long. 105°48', in sec. 

za, T. 3 N., R. 75 W., a quarter of a mile above high water line of Granby Reservoir 

and 5 miles south of town of Grand Lake.

Drainage area. 7.3 square miles.

Records available. April to September 1950.

Extremes. Maximum discharge during period, 93 second-feet June 16 (gage height, 2.16 

reet); minimum daily, 0.8 second-foot Apr. 1-4.

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

wo diversion or regulation above station.

Discharge, In second-feet, Mater year October 1949 to September 1950

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. Hov.. Dec. Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Th

lendar year

Mar. Apr.

0.8 

.8 

.8 

.8 

.9

.9 

.9 

.9 

.9 

1.0

1.0 

*1.0

l.o

1.0

1.3

1.6 

1.8 

2.0 

2.2 

2.5

3.6 

4.6 

5.0 

3.9 

3.5

2.6 

2.4 

2.2 

2.1 

2.1

Secondfoot-days

56.1 

283.7 

1,062 

195.2 

53.5 

58.5

-

May

2.1 

3.5 

4.9 

5.2 

4.7

4.1 

3.9 

3.8 

3.6 

3.8

4.4 

5.2 

4.9 

5.2

6.2

7.0 

8.8 

11 

9.1 

10

12 

16 

22 

24 

19

14 

12 

11 

9.3 

12 

21

Maximum

5.0 

24 

61 

11 

2.5 

5.2

-

June

31 

38 

34 

22 

26

47 

51 

40 

35 

42

55 

57 

54 

55 

54

61 

59 

44 

38 

3O

27 

24 

24 

23 

20

17 

15 

14 

13 

12

July

MlniBum

0.8 

2.1 

12 

2.6 

1.0 

.9

-

11 

11 

11 

9.8 

9.3

8.6 

8.2 

8.2 

7.9 

8.2

9.8 

7.7 

6.8 

6.2 

5.8

5.4 

5.2 

5.2

5.4 

4.9

4.4 

4.1 

3.9 

3.8 

4.2

3.9 

3.5 

3.3 

3.0 

2.9 

2.6

Aug.

2.5 

2.3 

2.3 

2.3 

2.2

2.2 

2.1 

2.0 

1.9 

2.0

2.2 

2.2 

1.9 

1.8 

1.6

1.5 

1.6 

1.4 

1.4 

1.4

1.3 

1.3 

1.2 

1.2 

1.2

1.6 

1.9 

1.4 

1.4 

1.2 

l.O

Mean

1.87 

9.15 

35.4 

6.30 

1.73 

1.95

-

Sept.

1.0 

1.0 

1.0 

.9 

.9

.9 

.9 

.9 

1.0 

1.1

1.2 

2.1 

1.9 

1.9 

2.5

2.6 

2.2 

1.9 

2.6 

5.2

3.3 

3.3 

3.0 

2.6 

2.5

2.2 

2.1 

2.1 

1.9 

1.8

Runoff in 

acre-feet

111 

563 

2,110 

387 

106 

 116

3,390

Peak discharge (base, 8O sec.-ft.). June 16 (7 p.m.) 93 sec.-ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Apr. 1-2O, Apr. 25 to May 1 (stage-discharge relation affected by Ice 

during part of periods); discharge computed on basis of 1 discharge measurement, weather records, 

and records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISION RIVER 

Arapaho Creek at Monarch Lake Outlet, Colo.

Location.--Water-stage recorder, lat. 40°OV', long. 105°45', in northeast corner of sec. 

 lit!, T. 2 N., R. 75 W., a quarter of a mile downstream from Monarch Lake Outlet and 10 

miles east of Granby.

Drainage area.--47.1 square miles.

Records available. October 1944 to September 1950.

Extremes. Maximum discharge during year, 781 second-feet June 16 (gage height, 3.82 feet); 

minimum dally, 5.0 second-feet Feb. 1-3..

1944-50: Maximum discharge, 1,040 second-feet June 18, 1949 (gage height, 4.19 

feet); minimum daily, 4.1 second-feet Dec. 4-6, 11, 1944.

Remarks. Records good except those for period of ice effect, which are fair. Flow partly 

regulated by Monarch Lake. Staff gage at winter station read twice daily Dec. 19 to 

Apr. 13.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

14 

14 

15 

15 

15

15 

14 

13 

13 

13

13 

14 

15 

16 

17

16 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

16 

16 

16 

16 

15

Nov.

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

14 

13 

13

13 

13 

12 

12 

12

11 

11 

11 

11 

10

10 

10 

9.9 

9.9 

9.9

Dec.

9.5 

9.5 

9.1 

8.7 

8.7

8.7 

8.7 

8.3 

*8.3 

8.3

7.9 

7.9 

7.5 

7.5 

7.5

7.5 

7.5 

7.2 

7.2 

6.9

6.8 

6.8 

6.5 

6.4 

6.2

6.2 

6.4 

6.4 

6.6 

6.6 

6.6

Jan.

6.6 

6.6 

6.2 

6.0 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.2 

*5.2 

5.2 

5.2

5.4 

5.4 

5.4 

5.6 

5.6

5.6 

5.6 

5.6 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4 

5.3

Feb.

5.0 

5.0 

S.'O 

5.2 

5.2

5.2 

 5.6 

5.6 

5.6 

*5.7

5.8 

5.8 

5.8 

5.3 

5.8

5.3 

5.8 

5.3 

5.8 

5.7

6.0 

6.0 

6.0 

6.0 

6.0

6.0 

5.8 

5.8

Month

Octo 

Hove 

Dece

Ca

janu 

Febr 

Marc 

Aprl

MAV

June 

July 

Augu 

Sept

Wa

mber. ....... ......... .................

lender year 1949

ter year 1949-5O .......................

Mar.

5.8 

5.8 

6.0 

6.0 

6.0

6.4 

6.4 

6.4 

7.0 

7.O

7.0 

7.0 

7.0 

7.1 

7.4

7.4 

*7.7 

7.6 

7.8 

7.7

7.6 

7.6 

7.2 

7.1 

6.8

6.8 

6.6 

6.8 

7.0 

7,4 

8.5

Apr.

8.2 

9.8 

9.2 

9.8 

9.5

9.2 

9.5 

9.8 

9.8 

10

11

11 

11 i 

11 

11

13 

14 

15 

16 

18

19 

22 

28 

33 

42

42 

37 

36 

33 

31

Secondfoot-days

481 

385.7 

233.9

33,970.6

171,3 

158.6 

215.9 

548.8 

4,147 

11,051 

3,288 

826 

679

22,186.2

May

29 

28 

30 

51 

78

78 

64 

54 

50 

46

46 

64 

78 

104 

148

163 

185 

248 

202 

176

190 

284 

366 

331 

270

195 

130 

94 

96 

100 

169

Maximum

17 

15 

9.5

931

6.6 

6.0 

8.5 

42 

366 

640 

178 

46 

46

640

June

307 

425 

358 

227 

224

407 

520 

452 

303 

340

535 

550 

540 

500 

535

570 

640 

495 

412 

335

307 

311 

254 

270 

267

213 

202 

192 

180 

180

July

174 

163 

178 

165 

158

152 

146 

142 

134 

132

140 

134 

124 

112 

1O2

94 

87 

85 

85 

82

78 

76 

71 

69 

65

62 

60 

57 

56 

54 

51

Minimum

13 

9.9

6.2

5.1

5.2 

5.0 

5.8 

8.2 

28 

180 

51 

17 

12

5.0

Aug.

46 

42 

41 

40 

38

37 

36 

35 

33 

32

31 

30 

29 

28 

26

25 

24 

21 

20 

18

18 

18 

18 

18 

17

17 

18 

18 

18 

17 

17

Mean

15.5 

12.9 

7.55

93. f

5.53 

5.66 

6.96 

18.3 

134 

368 

106 

26.6 

22.6

6O.8

Sept.

16 

15 

15 

14 

13

13 

12 

12 

12 

12

13 

14 

15 

18 

20

23 

23 

22 

24 

40

46 

45 

41 

37 

35

31 

28 

26 

23 

21

Runoff In 

acre-feet

954 

765 

464

67,380

340 

315 

428 

1,O9O 

8,230 

21,920 

6,520 

1,640 

1,350

44,020

Peak discharge (base, 630 sec. -ft.). June 16 (12 p.m.) 781 sec. -ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 19 to Mar. 16.
TRIBUTARIES ABOVE GUNNISON RIVER 63

Stillwater Creek above Grariby Reservoir, near Grand Lake, Colo.

Location.--Water-stage recorder and concrete control, lat. 40°11', long. 105°53', in sec. 

V'f, T. 3 N., R. 76 W., a quarter of a mile upstream from high-water line of Grariby 

Reservoir, half a mile upstream from U. S. Highway 34, and 6 miles southwest of town 

of Grand Lake.

Drainage area.--18.8 square miles.

Records available. June to September 1950.

Extremes. Maximum discharge during period, 62 second-feet June 2 (gage height, 2.34 feet 

from rating curve extended above 20 second-feet by weir formula; minimum daily, 1.4 

second-feet Sept. 6-9.

Remarks. Records fair. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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. Feb.

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

MRV

June 

July 

Augu 

Sept

Th

Lendar year

Peak discharge (base, 50 sec. -ft.). June

a No gage-height record; discharge compute

Mar. Apr.

Secondfoot -days

947 

541.3 

89.9 

72.9

-

May

Maximum

50 

25 

4.9 

5.8

-

June

a45 

50 

48 

31 

34

41 

42 

33 

27 

29

34 

35 

32 

31 

33

35 

35 

26 

27 

27

27 

27 

27 

26 

26

25 

25 

24 

23 

22

July

22 

21 

22 

22 

20

20 

22 

22 

25 

23

25 

22 

20 

19 

19

18 

16 

16 

18 

16

14 

14 

14 

14 

12

13 

13 

12 

11 

9.5 

6.8

Aug.

4 

3 

3 

3

3

3 

2 

2 

2 

2

4 

4 

3 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2 

2

Minimum Mean

22 31.6 

6.8 17.5 

2.2 2.90 

1.4 2.43

-

2 (11:30 p.m.) 62 sec. -ft. 

d on basis of records for stations on nearby

.9 

.9 

.9 

.8 

.4

.6 

.8 

.6 

.6 

.8

.1 

.3 

.2 

.8 

.6

.5 

.6 

.5 

.6 

.4

.4 

.2 

.2 

.3 

.2

.5 

.7 

.5 

.5 

.3 

.2

Sept.

2.1 

2.1 

2.1 

1.8

1.6

1.4 

1.4 

1.4 

1.4 

1.7

2.0 

2.8 

2.7 

2.5 

2.6

3.0 

. 2.6 

2.2 

2.3 

5.8

3.8 

2.8 

2.8 

2.7 

3.0

2.8 

2.6 

2.4 

2.3 

2.2

Runoff In 

acre -feet

1,880 

1,070 

178 

145

3,270

streams.
64 TRIBUTARIES ABOVE GUNNISON RIVER

Willow Creek near Granby, Colo.

Location.-^Water-stage recorder, lat. 40°11', long. 106°00', in HW£ see. 34, T. 3 N., R. 77 

 W.," at bridge on State Highway 125, 100 feet downstream from Gold Run Creek and 7 miles 

northwest of Granby. Datum of gage is 8,236.88 feet above mean sea level, unadjusted.

Drainage area. 105 square miles.

Records available. April 1935 to September 1950.

Average discharge. 15 years, 62.7 second-feet.

Extremes. Maximum discharge during year, 402 second-feet June 7 (gage height, 4.07 feet); 

minimum daily, 9.1 second-feet Sept. 1.

1935-50: Maximum discharge, 811 second-feet May 16, 1938 (gage height, 5.44 feet), 

from rating curve extended above 530 second-feet; minimum dally, 6 second-feet Feb. 17- 

24, 1938, Dee. 15, 16, 27, 1941.

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

which are fair. Water diverted above station for Irrigation of hay meadows.

Discharge, In second-feet, water year October 1949 to September 195O

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 

3O 

31

Oct.

18 

17 

15 

15 

14

15 

15 

14 

14 

15

14 

14 

17 

16 

15

14 

15 

15 

16 

15

13 

14 

14 

14 

13

14 

13 

13 

15 

14 

13

MOT.

14 

15 

15 

15 

15

15 

13 

14 

14 

*16

14 

17 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

17 

14

15 

15 

15 

14 

12

Dec.

11 

11 

11 

11 

12

13 

13 

13 

14 

*11

11 

10 

18 

10 

10

10 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

12 

12 

12 

12 

12

Jan.

12

11 

10 

10 

10

10 

10 

10

11 

11

11 11 11 11 

11

11

12 

12 

12 

13

12 

12 

12 

12 

12

11 

11 

10 

10 

10 

11

Feb.

11 

10 

10 

10 

10

11 11 11

10 

10

*11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11

12 

12 

12

12 

11 

11

Kmth

Octo 

Hovei 

Decei

Ca

Janu 

Febr 

Mure 

Aprl

June 

July 

Augu 

Sept

Ha

 Tier. ...........----------- ------------

lendar year 1949

ter year 1949-5O .......................

Mar.

11 

11 

11 

11 

12

12 

12 

12 

12 

12

12 

11 

11 

11 

12

12 

13 

*13 

13 

13

13 

13 

13 

12 

a!3

a!3 

a!3 

a!3 

a!2 

a!3 

a!4

Apr.

815 

a!7 

al8 

a!6 

a!9

a25 

a33 

a33 

26 

26

28 

29 

33 

37 

37

43 

58 

61 

59 

63

77 

99 

117 

101 

83

67 

58 

55 

54 

48

Secondroot-days

453 

455 

351

30,263.4

343 

306 

379 

1,435 

6,054 

7,445 

1,491 

421.5 

442.2

19,575.7

»y

48 

59 

85 

116 

105

93 

85 

86 

83 

S2

98 

116 

135 

160 

194

225 

270 

289 

287 

282

289 

320 

361 

372 

346

292 

256 

234 

2O6 

212 

268

Maximal

18 

17 

14

589

13 

12 

14 

117 

372 

3S2 

89 

18 

29

382

June

333 

374 

372 

323 

301

338 

382 

369 

308 

282

282 

304 

301 

289 

277

275 

270 

256 

234 

210

190 

176 

167 

151 

138

125 

117 

107 

99 

95

July

89 

82 

86 

78 

7O

67 

63 

66 

66 

63

60 

53 

49 

46 

44

41 

38 

42 

43 

38

36 

34 

31 

30 

28

27 

26 

26 

24 

24 

21

Minima

13 

12 

10

8.6

10 

10 

11 

15 

48 

95 

21 

9.5 

9.1

9.1

Aug.

18 

17 

17 

17 

17

17 

17 

15 

15 

14

15 

13 

11 

12 

12

13 

13 

13 

12 

12

12 

12 

12

11 

11

13 

14 

12 

13 

12 

9.5

Mean

14.6 

15.2 

11.3

82.9

11.1 

1O.9 

12.2 

47.8 

195 

248 

48.1 

13.6 

14.7

53.6

Sept.

9.1 

11 

11 

9.8 

9.8

9.5 

10 

11 

12 

12

15 

24 

18 

15 

16

20 

16 

14 

15 

29

22 

17 

16 

16 

15

14 

14 

14 

14 

13

Runoff In 

acre-feet

899 

902 

696

6O.O3O

680 

607 

752 

2,850 

12,010 

14,770 

2.96O 

836 

877

38,840

Peak discharge (base, 5OO sec. 

June 7 (1O p.m.) 4O2 sec.-ft.

-ft.). Hay 23 (11 p.m.) 396 sec.-ft.; June 2 (1O p.m.) 399 sec.-ft.;

Winter discharge measurement made on this day.

s Ha gage-height record; discharge computed on basis of 1 discharge measurement, weather records, 

and records for nearby stations.

Hote. Stage-discharge relation affected by Ice Oct. 31, Bov. 1, 7-9, 13, 14, 17-23, Hov. 30 to 

Mar. 24 (no gage-height record Jan. 6-13, Feb. 3 to Mar. 17; discharge computed as explained In footnote a).
TRIBUTARIES ABOVE GUNNISON RIVER 65

Fraser River near Winter Park, Colo.

Location. Water-stage recorder, lat. 39°54'00", long. 105 046'35n , in NE$ sec. 4, T. 2 S.,

 h". Vb W., 100 feet downstream from bridge on D. S. Highway 40, 1? miles northwest of 

Winter Park, and 2| miles downstream from point of diversion for Moffat water tunnel.

Drainage area. 27.6 square miles.

Records available. September 1910 to September 1930 and September 1933 to September 1950

 in reports of Geological Survey. September 1910 to September 1950 in reports of State 

engineer. Records since June 9, 1936, equivalent to earlier records If diversion 

through Moffat water tunnel is added to flow past station.

Average discharge. 40 years, 41.7 second-feet (including diversion through Moffat water 

tunnel).

Extremes. Maximum discharge during year, 46 second-feet May 3; maximum gage height, 2.32

 feet Dec. 5 (backwater from Ice); minimum daily, 2.9 second-feet Sept. 4-6.

1910-50: Maximum discharge, 820 second-feet June 13, 1918 (gage height, 2.9 feet); 

minimum, 2 second-feet Mar. 30, 1912.

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

 which are fair. Snail transmountain diversion through Berthoud Pass ditch (see p. 27). 

Considerable portion of flow above station diverted through Moffat water tunnel.

Cooperation. Records of flow diverted through Moffat water tunnel furnished by State 

engineer.

Discharge, in second-feet, watsr year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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. Dec. Feb. Mar. Apr. Hay July Aug. Sept.

a4.1 

a4.1 

a4.1 

a3.8 

a3.8

a3.8 

a3.7 

a3.7 

a4.0 

a4.6

a5.5 

6.5 

6.O 

5.4 

5.1

5.1 

5.7 

6.0 

5.4 

5.4

6.O 

7.0 

5.4 

4.8 

4.5

5.1 

5.1 

4.8 

5.7 

20 

b27

20

19

18

17 

*17 

17 

14 

14

14 

b!3 

b!3 

b!3

14

b!3 

b!3 

b!3 

b!3 

b!2

bll

b!2

b!2

13

12

12

12

12

12

11

b8.6 

b8.3 

b8.4 

bS.l 

bS.l

*b6.2 

b8.6 

b8.8 

1)9.0 

b9.0

b9.0 

b8.6 

b8.5 

b8.5 

a8.5

a9.0 

a9.0 

a9.0 

a9.0 

a9.o

a8.2 

a8.2 

a8.2 

a8.2 

a8.5

a9.1 

a9.1 

a9.1 

a9.1 

a9.1 

a9.0

a8.5 

a7.7 

a7.6 

a7.6 

7.8

aS.O 

aS.O 

aB.O 

 b'S.O 

b8.0

bS.O 

bS.O 

bS.O 

bS.O 

bS.O

b8.5 

b6.5 

b8.5 

b8.5 

b6.5

b8.5 

b8.2 

b8.1 

bS.l 

bB.l

aT.7 

a7.7 

a8.5 

a8.5 

a8.5 

a8.5

a8.3 

a7.8 

a7.6 

a7.8 

a7.9

 8.0

8.0

8.0

aS.O

a8.2

a8.6 

a8.6 

a8.6 

a8.6 

a8.6

aB.6 

aB.6 

aB.6 

a8.6 

aS.6

a8.8 

a8.7 

a9.2 

a9.2 

a9.2

a9.4 

a9.5 

a9.6

a9.O 

a9.3 

a9.4 

a9.5 

9.5

9.5 

9.5 

9.0 

9.0 

9.0

a8.8

a8.4

 9.5

8.5

7.5

7.5

8.0

aS.l

aS.l

aS.l

aS.l 

aB.O 

aB.O 

aS.O 

aS.l

a8.6 

a9.1 

a9.7

alO

alO

alO

all 

all 

alo 

alO 

alO

all 

alZ 

a!3 

a!3 

al2

a!4

al7

20

22

21

20

20

20

20

21

20

18

20

20

20

20

21

21

20 

819 

al8 

ale 

a!9 

aZO

aZ2 

a23 

a22 

a22 

a22

a22 

a21 

a21 

aZl 

aZO

a!9 

19 

19 

19 

18

21 

20 

18 IT" 

17

17

16

15

14

14

15

12

12

11

11

10

9.5

9.5

9.0

8.5

8.0 

8.0 

8.0 

8.5 

9.0

8.5 

7.0 

6.5 

6.5 

8.5

6.5 

6.0 

6.5 

7.0 

5.7

5.7 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.1 

5.1 

4.8 

4.8

4.5 

4.2 

4.5 

4.5 

4.Z

4.2 

4.2 

3.9 

3.9 

3.9

3.9 

3.9 

3.9 

3.9 

3.8

3.8 

3.6 

3.3 

3.3 

3.3

5.3 

3.3 

3.3 

3.3 

3.3

5.1 

4.2 

3.8 

3*3 

3.0 

3.0

3.0 

3.0 

.3.0 

2.9 

2.9

2.9

3.0 

3.0 

3.0 

3.6

3.6 

4.5 

3.9 

3.9 

3.9

3.9 

3.6 

3.8 

4.8

6.0

4.5 

4.S 

4.2 

4.2 

4.2

4.2 

3.9 

3.9 

5.6 

3.8

Second- Discharge In aeeend-feet Runoff In 

foot-daya Maximum Minimum Mean acre-feet

Diversions 

to Moffat 

rater tunnel 

acre-feet)

Adjusted for diversion

. Mean 

I secondfeet)

October.. 

Roveaber. 

December.

191.2

427

269

27 

21 

9.]

3.7

11e.i

6.17

14.2

8.68

379

847

534

656

0

1,O40 

847 

534

16.9

14.2

8.68

Calendar year 1949 11,132.9 287 30.5 22,090 10,000 32,090 44.3

January... 

February.. 

March.....

April.....

May.......

June......

July......

August....

September.

252.1

239

272.8

456

637

538

212.6

117

112.8

8.5 

9.6

10

25

27

23

10 

5.] 

6.0

7.6 

7.6 

7.5

1O

15

11 

4.8 

3.0 

2.9

8.13 

8.54 

8.SO 

15.2 

20.5 

17.9 

6.86 

3.77 

3.76

500

474

54i

904

1.26O

1,070

422

232

ZZ4

0

1.97O

7,130

2,380

877

636

5OO

474

541

904

3.Z3O

8.2OO

2,800

1,110

862

8.13

8.54

8.80

15.2

52.5

138

45.6

18.1

14.5

Water year 1949-5O 3,724.5 27 2.9 iO.2 7,390 13,650 21,040 29.1

* Winter discharge measurement made en this day.

a No gage-height record; dlscharga computed on basis of recorded range in stage, weather records, 

and records for nearby stations.

b Stage-discharge relation affected by '.ce.
66 TRIBUTARIES ABOVE GDNNISON RIVER

Fraser River at Granby, Colo.

Location. Water-stage recorder, lat. 40°05' , long.. 105°57', in sec. 1, T. 1 N., R. 76? W.,

 Just downstream from Tenmile Creek, half a mile southwest of Granby, and 2? miles upstream from mouth.

Drainage area. 285 square miles.

Records available. September 1937 to September 1950. August 1904 to September 1909 at 

site just below Tenmile Creek. Records since September 1937 equivalent to earlier 

records if diversion through Moffat water tunnel is added to flow past station.

Average discharge. 18 years, 200 second-feet (including diversion through Moffat water 

tunnel).

Extremes. Maximum discharge during year, 718 second-feet June 17 (gage height, 2.23 

reet); minimum daily, 18 second-feet Sept. 6.

1904-9, 1937-50: Maximum daily discharge, 1,860 second-feet June 14, 15, 1906; minimum daily, 14 second-feet Sept. 22, 1944.

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

 which are fair. Transmountain diversions (see p. 27) and diversions for irrigation 

above station.

Cooperation.--Records of flow diverted through Moffat water tunne/1 furnished by State 

engineer.

Discharge, in second-feet, water year October 1949 to September 1950

Day Dot. Nov. Apr. May June July Aug. Sept.

66

70

60

56

60

60

54

58

60

62

62

56

52

64

58

58 

*60 

60

49

48

49

47

44

47

52

51

52 

*56

54

45

38

40

42

39

36

37

38

38

36

33

35

34

32

32

34

36

37

36

37

19

19 

*20

20

20

21

21

22

23

25

27

28

28 ' 27

26

26

27

28

29

30

29

80

88

96

84

95

130

175

260

256

166

152 

170 

202 

*268 

232

180

210

256

213

213

288

336

364

296

191

177

149

180

206

170

188

225

312

372

350

330

330

325

315

310

320

330

350

370

380

400

430

470

450

440

460

480

500

500

500

470

430

415

408

400

440

495

540

568

510

440

525 

S75 

540 

458 

458

525

570

585

565

560

580

620

545

481

436

388

384

340

316

296

276

256

229

213

202

191

184

188

166

149

129

126

129

126

120

13S 

108 

94 

117 

102

99

91

105

117

99

30

29

28

25

23

18

20

21

21

24

26

31

36

40

35

36

34

32

38

50

43

41

38

36

35

35

34

32

Second- Discharge In second-feet Runoff in 

foot-days Maximum Minimum Mean acre-feet

Diversions

to Moffat

water tunnel

(acre-feet)

Adjusted for diversion

Runoff in 

acre-feet

October.. 

November. 

December.

1,384

1,751

1,284

44.6

58.4

41.4

2,750

3,470

2,550

1,330

5

4,080

3,480

2,550

66.2

58.5

41.4

Calendar year 1949 .. 70,110 1,420 192 139,100 24,890 164,000 226

January... 

February.. 

March.....

April.....

May.......

June......

July......

August....

September.

766

863

1,684

5,883

12,000

13,476

3,176

1,139

1,017

38

40

75

364

500

620

191

62

19

23

35

80

188

202

24.7

30.8

54.3

196

387

449

102

36.7

33.9

1,520

1,710

3,340

11,670

23,800

26,730

6,300

2,260

2,020

0

4,200

15,870

4,880

1,940

1,340

1,520

1,710

3,340

11,670

28,000

42,600

11,180

4,200

3,360

24.7

30.8

54.3

196

455

716

181

68.2

56.5

Water year 1949-50 44,423 122 88,120 29.560 117,700 163

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 22-24, Dec. 1-14, Jan. 19 to Feb. 8, Feb, 10 

to Mar. 5, Mar. 20 .to Apr. 3. No gage-height record Dec. 15 to Jan. 18, Feb. 9, Mar. 6-19, (stagedischarge relation affected by ice during periods), Apr. 4-7, May 5 to June 4; discharge computed on 

basis of 1 discharge measurement, recorded range in stage, weather records, and records for nearby 

stations.
TRIBUTARIES ABOVE GUNNISON RIVER 67

Vasquez Creek near Winter Park, Colo.

Location,--Water-stage recorder and concrete control, lat. 39°55'15", long. 105°47i05", 

irTNwV sec. 33, T. IS., R. 75 W., 75 feet downstream from bridge on U. S. Highway 40, 

a quarter of a mile upstream from mouth, ij miles downstream from Moffat water tunnel 

diversion, and 2f miles northwest of Winter Park. Datum of gage is 8,768.48 feet 

above mean sea level, unadjusted.

Drainage area.--27.8 square miles.

Records available.--June 1907 to October 1909, August 1934 to September 1950. Records 

since May 26, 1937, equivalent to earlier records if diversion through Moffat water 

tunnel is added to flow past station.

Average discharge.--16 years (1934-50), 33.2 second-feet (including diversion through 

worrat water tunnel).

Extremes.--Maximum discharge during year, 50 second-feet July 13 (gage height, 1.51 feet); 

minimum daily, 0.3 second-foot July 21.

1934-50: Maximum discharge, 396 second-feet June 15, 1935 (gage height, 2.64 feet); 

no flow Sept. 9-24, 1944, July 17, 18, 1946.

Remarks.--Records fair. Transmountain diversion above-station through Moffat water tunnel 

was 14,980 acre-feet during water year 1949-50.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.8 

1.8 

l.« 

1.7 

1.7

1.7 

1.7 

1.7 

1.8 

2.0

2.0 

2.6 

2.3 

2.1 

2.1

2.0 

2.1 

2.3 

2.1 

2.4

2.6 

3.7 

5.2 

3.3 

3.5

3.1

3.1 

3.1 

2.8 

10 

20

. Nov.

22 

22 

22 

23 

24

24 

*24 

22 

17 

17

16 

16 

16 

16 

16

16 

16 

16 

16 

15

14 

15 

15 

15 

15

15

15 

14 

14 

14

Dec.

13 

11 

10 

9.8 

9.6

*9.5 

9.7 

9.8 

9.8 

9.6

8.7 

8.2 

8.0 

8.0 

8^3

8.3 

8.3 

8.3 

8.3 

8.0

7.6 

7.6 

7.6 

7.7 

7.8

7.8 

7.9 

7.9 

7.9 

7.9 

7.8

Jan.

7.3 

6.9 

6.7 

6.8 

6.9

7.0 

6.9 

6.7 

*6.7 

6.8

6.9 

7.0 

7.0 

7.0 

6.9

7.1 

7.2 

7.2 

7.2 

7.2

7.2 

7.0 

7.0 

7.0 

6.7

6.5 

6.6 

7.0 

7.0 

7.0 

7.1

Feb.

6.9 

6.7 

6.7 

6.7 

6.8

*6.8 

6.8 

6.8 

6.8 

6.8

6.9 

7.0 

7.0 

7.0 

7.0

7.0 

7.0 

7.0 

6.8 

6.5

6.4 

6.4 

6.5 

6.5 

6.6

6.6 

6.6 

6.6

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Appl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

6.4 

6.4 

6.5 

6.5 

6.6

6.6 

6.6 

6.6 

6.4 

6.4

6.4 

6.2 

6.1 

*6.0 

5.9

6.0

6.1 

6.1 

6.2 

6.2

6.2 

6.2 

6.2 

6.2 

6.2

6.3 

6.4 

6.5 

6.7 

6.7 

6.7

Apr.

.0 

.2 

.0 

.0

.2

7.7 

8.7 

9.8 

10 

10

11 

13 

*15 

13 

12

9.5 

9.0 

9.0 

9.0 

9.7

12 

17 

20 

19 

25

10 

10 

11 

11 

15

Secondfoot-days

100.1 

522 

269.7

5,591.3

215.5 

189.2 

196.5 

341.8 

562 

265.3 

318.0 

50.1 

38.1

3,068.3

May

11 

15 

23 

32 

19

15

11 

12 

12 

12

13 

13 

14 

15

16

16 

18 

19 

18 

19

20 

21 

23 

25 

25

23 

25 

27 

19 

15 

16

Maximum

20 

24 

13

226

7.3 

7.0 

6.7 

25 

32 

25 

44 

3.0 

1.9

44

June

18 

20 

23 

25 

24

20 

19 

18 

14 

13

12 

9.0 

4.9 

4.9 

4.2

6.1 

7.6 

5.4 

2.8 

2.1

1.8

1.6 

1.1 

1.0 

.9

1.4 

1.7 

1.0 

.9 

.9

July

0.9 

.9 

.8 

.8 

.8

1.6 

.8 

.8 

.8 

.9

2.6 

1.1 

9.7 

42 

39

39 

42 

40 

44 

24

.3 

.8 

1.0 

2.4 

3.2

3.2 

3.0 

3.0 

3.0 

2.9 

2.7

Aug.

2.7 

2.7 

3.0 

2.9 

3.0

1.9 

1.7 

1.5 

1.4 

1.3

1.4 

. 1.4 

1.3 

1.3 

1.3

1.3

1.3 

1.3 

1.3 

1.3

1.3

1.3 

1.3 

1.1

1.2

2.0 

1.5 

1.4 

1.3 

1.2 

1.2

Minimum Mean

1.7 3.23 

14 17.4 

7.6 8.70

.5 15.3

6.5 6.95 

6.4 6.76 

5.91 6.54 

7.0 11.4 

11 18.1 

.9 8.84 

.3 10.3 

1.1 1.62 

1.1 1.27

.3 8.41

Sept.

1.2 

1.2 

1.2 

1.1 

1.1

1.1 

1.1 

1.1 

1.3 

1.3

1.4 

1.9 

1.7 

1.5 

1.4

1.4 

1.3 

1.3 

1.4 

1.9

1.3 

1.1 

1.1 

1.1 

1.1

1.1 

1.1 

1.1 

1.1 

1.1

Runoff In 

acre-feet

199 

1,040 

535

11,100

427 

375 

390 

678 

1,110 

526 

631 

99 

76

6,090

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 31 to Apr. 17 (stage-discharge relation affected by Ice during 

part of period;; discharge computed on tasis of 6 discharge measurements, weather records, and records for stations on nearby streams.
68 TRIBUTARIES ABOVE GUNNISON RIVER

St. Louis Creek near Fraser, Colo.

Location.--Water-stage recorder, lat. 39°54'45", long. 105°52'35", in sec. 34, T. 1 S., 

K. YD W., a third of a mile downstream from confluence of East and West Branches and 

$2 miles southwest of Fraser. Datum of gage is 8,980.17 feet above mean sea level, 

unadjusted.

Drainage area.--32.8 square miles.

Records available. August 1934 to September 1950.

Average discharge. 16 years, 36.8 second-feet.

Extremes. Maximum discharge during year, 293 second-feet June 17 (gage height, 2.46 

reet); minimum daily, 8.0 second-feet Feb. 3-7.

1934-50: Maximum discharge, 353 second-feet June 15, 1935 (gage height, 2.58 feet), 

from rating curve extended above 220 second-feet; minimum, 3.2 second-feet Apr. 9, 1935 

(gage height, 0.75 foot).

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

which are fair. No diversion or regulation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

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

Oct.

23 

23 

22 

21 

20

20 

19 

19 

21 

20

20 

22 

20 

19 

19

18 

19 

20 

19 

16

19 

23 

23 

20 

21

18 

18 

18 

18 

18 

b!6

Nov.

25 

24 

26 

27 

27

28 

*28 

25 

20 

17

16 

b!5 

b!5 

b!5 

16

b!5 

b!5 

b!5 

b!5 

b!5

b!3 

b!4 

b!4 

b!4 

14

13 

13 

13 

13 

13

Dec.

12 

11 

11 

11 

12

*12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

11 

11 

11 

11 

12

13 

13 

13 

13 

13 

13

Jan.

12 

11 

11 

11 

12

12 

12 

12 

12 

*12

12 

12 

12 

12 

13

13 

13 

13 

13 

13

13 

12 

12 

12 

12

11 

10 

10 

11 

11 

11

Feb.

10 

11 

8.0 

8.0 

8.0

8.0 

*8.0 

8.5 

9.0 

9.0

9.3 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

11 

11 

11

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-50 .......................

Mar.

11 

11 

11 

11 

11

10 

10 

10 

10 

10

10 

10 

10 

9.8 

*9.2

9.2 

9.2 

9.2 

9.2 

8.8

9.2 

8.8 

8.8 

8.4 

8.4

8.8 

9.2 

b9.2 

8.8 

b9.0 

8.8

Apr.

8.8 

8.8 

8.8 

139.0 

b9.0

9.2 

*10 

12 

12 

10

13 

11 

11 

12 

12

9.6 

10 

11 

11 

12

14 

17 

18 

16 

24

13 

12 

13 

14 

15

Secondfoot-days

612 

533 

371

14,374.6

368 

269.8 

297.0 

366.2 

1,226 

5,107 

2,101 

760 

529

12,540.0

May

14 

18 

26 

28 

21

21 

18 

18 

20 

18

21 

23 

24 

27 

30

33 

42 

45 

42 

45

55 

65 

74 

77 

70

58 

51 

52 

52 

59 

79

Maximum

23 

28 

13

241

13 

11 

11 

24 

79 

263 

124 

34 

24

263

June

96 

113 

111 

92 

102

135 

158 

140 

135 

160

188 

209 

212 

227 

230

254 

263 

254 

221 

200

194 

185 

180 

180 

172

155 

145 

135 

133 

128

July

124 

117 

113 

107 

102

94 

91 

87 

86 

82

79 

74 

71 

70 

66

62 

58 

58 

55 

52

48 

46 

45 

44 

42

40 

40 

40 

38 

36 

34

Aug.

33 

32 

34 

32 

31

.31 

29 

28 

27 

26

27 

25 

24 

24 

23

22 

22 

21 

21 

20

20 

20 

20 

20 

23

27 

22 

20 

20 

18 

18

! 

Minimum 1 Mean

16 19.7 

13 17.8 

11 12.0

7.61 39.4

10 I 11.9 

8.0 1 9.64 

8.4 9.58 

8.8 12.2 

14 39.5 

92 170 

34 67.8 

18 24.5 

15 17.6

8.0 34.4

Sept.

18 

17 

17 

16 

16

16 

16 

16 

18 

18

19 

22 

20 

20 

19

18 

17 

16 

20 

24

20 

18 

18 

17 

16

16 

15 

16 

15 

15

Runoff In 

acre-feet

1,210 

1,060 

736

28,510

730 

535 

589 

726 

2,430 

10,130 

4,170 

1,510 

1,050

24,880

Peak discharge (base. 240 sec.-ft.). June 17 (9 p.m.) 293 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 25 to Mar. 14 (stage-discharge relation affected by Ice during 

part of period;; discharge computed on basis of 3 discharge measurements, weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GDHHISON RIVER 69

Ranch Creek near Praser, Colo.

location. Water-stage recorder, lat. 39°55 ! 15n , long. 1050 47 ! 05n , in NWi sec. 22, T. IS., 

K. 75 W., 450 feet downstream from South Fork and 3 miles east of Fraser.

Drainage area. 19.9 square miles.

Records available. August 1934 tp September 1950. Records since May 15, 1949, equivalent 

to earlier records if diversion through Moffat water tunnel is added to flow past station.

Average discharge. 16 years, 20.7 second-feet (including diversion through Moffat water 

tunnel).

Extremes. Maximum discharge during year, 124 second-feet June 16 (gage height, 2.30 feet); 

minimum daily, 4.1 second-feet Jan. 31 to Feb. 3.

1934-50: Maximum discharge, 299 second-feet June 15, 1935 (gage height, 3.37 feet); 

minimum daily, 1.5 second-feet (estimated) Feb. 3-7, Mar. 18-21, 1935.

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

which are fair. Transmountain diversion above station through Moffat water tunnel was 

1,020 acre-feet during year 1949-50.

Discharge, In second-feet, Mater year October 1949 to September 1950

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

Oct.

11 

10 

10 

9.1 

8.5

8.2 

8.2 

7.9 

7.9 

7.6

7.9 

8.5

9.4 

8.5

8.5 

9.1 

10 

9.4 

7.6

9.1 

9.7 

10 

9.4 

9.4

8.8 

8.8 

7.9 

7.6 

7.6 

7.O

Hov.

7.4 

8.1 

8.7 

8.0 

S.3

8.4 

8.4 

 8.2 

7.6 

7.6

7.9 

7.6

7.5 

B.I

7.7 

7.5 

7.5 

7.0 

7.0

6.4 

6.0 

6.1 

6.5 

6.7

6.5 

6.1 

5.6 

5.1 

4.8

Dec.

4.6 

4.8 

4.7 

4.4 

4.5

4.5 

 4.6 

4.6 

4.7 

4.9

4.9 

4.9

5.O 

5.0

5.0 

5.0 

5.0 

4.8 

4.8

4.8 

4.8 

4.9 

5.1 

5.2

5.1 

5.1 

5.2 

5.2 

5.2 

5.0

Jan.

5.O 

4.8 

4.8 

4.8 

4.8

4.8 

4.8 

4.8 

4.8 

4.8

 4.8 

5.0

4.7 

4.8

4.8 

4.8 

4.7 

4.7 

4.7

4.7 

4.7 

4.7 

4.6 

4.6

4.6 

4.6 

4.6 

4.6 

4.4 

4.1

Feb.

4.1 

4.1 

4.1 

4.2 

4.2

4.2 

4.2 

 4.2 

4.2 

4.2

4.4

4.2

4.6 

4.6

4.6 

4.6 

4.6 

4.ff 

4.7

4.7 

4.7 

4.7 

4.7 

4.7

5.O 

5.0 

5.0

Month

OCto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Hav

June 

July 

Align 

Sept

Ha

ber. ....................................

 ber. ...........---.-.....---......--.-.

lendar year 1949

ter year 1949-50 .......................

Mar.

5.0 

5.0 

5.0 

5.0 

5.2

5.4 

5.4 

5.2 

5.2 

5.2

5.4 

5.4 

5.4 

 5.4 

5.4

5.4 

5.6 

5.6 

5.6 

5.4

5.2 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4 

5.4

Apr.

5.4 

5.4 

5.4 

5.4 

5.4

5.6 

5.8 

6.4 

6.6 

5.8

5.0 

5.4 

6.4 

7.3 

6.8

5.6 

6.2 

6.4 

6.2 

7.3

9.1 

12 

14 

11 

15

7.8 

7.2 

8.5 

8.2 

9.0

Secondfoot-days

272.0 

215.7 

151.2

9,449.4

146.1 

125.3 

165.4 

219.6 

697.5 

1,958 

616 

219.6 

163.5

4,949.9

May

8.5 

12 

18 

18 

15

15 

13 

13 

13 

13

14 

14 

15 

16 

19

20 

24 

27 

24 

26

29 

36 

42 

42 

35

32 

28 

27 

26 

27 

36

Maxima

11 

8.7 

5.2

230

5.0 

5.0 

5.6 

14 

42 

107 

37 

11 

10

107

June

44 

50 

45 

39 

46

70 

79 

70 

65 

74

86 

88 

89 

95 

95

1O6 

107 

92 

82 

70

61 

56 

52 

50 

46

43 

4O 

40 

4O 

38

July

37 

36 

35 

32 

32

31 

30 

28 

29 

28

27 

20 

16 

16 

15

15 

16 

16 

16 

15

14 

13 

11 

12 

11

12 

11 

11 

10 

10 

11

MlnlnuB

7.0 

4.8 

4.4

3.4

4.1 

4.1 

5.0 

5.0 

8.5 

38 

10 

5.3 

4.2

4.1

Aug.

10 

9.3 

11 

11 

11

11 

10 

8.0 

6.5 

6.8

7.2 

6.5 

6.8 

6.1 

5.5

5.9 

6.1 

6.1 

5.3 

5.3

5.5 

5.7 

4.9 

5.5 

5.7

7.5 

7.0 

5.9 

5.7 

5.5 

5.3

Mean

8.7T 

7.19 

4.88

25.9

4.71 

4.48 

5.34 

7.32 

22.5 

65.3 

19.9 

7.08 

5.45

13.6

Sept.

5.1 

5.1 

4.9 

4.9 

4.5

4.5 

4.5 

4.5 

4.7 

4.7

5.3 

7.0 

7.0 

6.5 

6.8

6.3 

5.1 

5.1 

6.1 

10

6.5 

5.5 

5.3 

4.7 

4.9

5.1 

5.1 

5.1 

4.5 

4.2

Runoff In 

acre-feet

540 

428 

300

18,740

290 

249 

328 

436 

1,380 

3,880 

1,220 

436 

324

9,810

* Winter discharge neasureBent Bade on this day.

Kate. Stage-discharge relation affected by ice Oct. 31, Kov. 1-7, 12-14, Dec. 7-29. Ho gageheight record HOT. 15 ta Dec. 6 (stagBi-dlscharge relation affected by Ice during Boat of period); 

discharge computed ou basis of weather records and records fop stations on nearby streams.
70 TRIBUTARIES ABOVE (HOTISON RIVER

Ranch Creek near Tabernash, Colo.

Location.--Water-stage recorder, lat. 39°59'55", long. 105°49'10", In sec. 6, T. IS., R. 

Yt> W., a quarter of a mile upstream from Meadow Creek and \\ miles east of Tabernash. 

Datum of gage is 8,338.01 feet above mean sea level, unadjusted. '

Drainage area. 50.7 square miles.

Records available. September 1984 to September 1950. Records since May 15, 1949, equivaient to earlier records If diversion through Moffat water tunnel is added to flow past 

station.

Average discharge. 16 years, 39.1 second-feet (including diversion through Moffat water 

tunnel).

Extremes.--Maximum discharge during year, 248 second-feet June 11 (gage height, 3.29 feet); 

minimum not determined, occurred during period of no gage-height record.

1934-50: Maximum discharge, 506 second-feet June 15, 1935 (gage height, 4.40 feet), 

from rating curve extended above 250 second-feet; no flow Feb. 15 to Mar. 13, 1937, 

Feb. 13, 1947, and perhaps other days in winter months.

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

which are poor. Transmountain diversion through Moffat water tunnel and several small 

diversions for irrigation above station.

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Discharge, in second-feet, water year October 1949 to September 1950

Oct.

13 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

15 

15 

13

12 

13 

17 

17 

14

11 

13 

12 

13 

12

12 

10 

10 

10 

10 

10

Nov.

11 

11 

11 

11 

11

11 

16 

*18 

11 

10

9.5 

9.5 

9.7 

10 

9.8

9.5 

9.7 

10 

10 

10

9.8 

9.3 

9.1 

9.2

9.2

9.2 

9.2

8.6 

8.2

7.7

Dec.

(*)

(*) 

6.4

Jan.

(*> 

5.4

Feb.

(*) 

4.5

Month

Octo 

Nove 

Deoe

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

ber

lendar year 1949

ter year 1949-5O ...............

Mar.

8.5 

( )'

Apr.

13 

15 

17 

15 

20

28 

40 

50 

58 

50

40 

44 

50 

*58 

46

40 

42 

45 

40 

33

37 

44 

48 

38 

30

32 

28 

30 

29 

28

Secondfoot-days

384 

308.2 

198.4

16,238.0

167.4 

126 

263.5 

1,088 

1,677 

3,353 

700 

268.2 

214.9

8,748.6

May

27 

28 

35 

46 

42

37 

37 

34 

34 

34

35 

37 

40 

43 

45

48 

56 

58 

56 

60

65 

78 

92 

92

90

82 

80 

72 

62 

60 

72

Maximum

17 

18

386

58 

92

176 

39 

14 

16

176

June

94 

114 

125 

110 

102

118 

128 

120 

135 

154

176 

168 

160 

158 

152

160 

160 

133 

122 

108

97 

90 

79 

72 

65

59 

55 

50 

47 

42

July

38 

37 

39 

34 

32

29 

28 

29 

29 

28

28 

27 

25 

22 

19

19 

18 

22 

23 

19

17 

16 

14 

14 

14

14 

14 

14 

13 

13 

12

Minimum

10

7.7

-

13 

27 

42 

12 

5.8 

3.8

-

Aug.

11 

11 

11 

14 

12

12 

13 

12 

10 

10

10 

9.5 

9.0 

8.5 

7.5

7.5 

7.0 

7.0 

6.6 

6.2

6.6 

6.6 

6.2 

5.8 

7.0

8.5 

5.4 

7.5 

7.0 

6.6 

6.2

Mean

12.4 

10.3 

6.4

44.5

5.4 

4.5 

8.5 

36.3 

54.1 

112 

22.6 

8.65 

7.16

24.0

Sept.

5.4 

5,4

5.0 

5.0 

4.2

3.8 

4.2 

4.2

4.2 

5.0

5.4

7.5 

8.0 

8.5 

8.0

8.0 

7.0 

7.0 

8.5 

16

12 

10 

9.0 

8.5 

8.0

8.0 

7.5 

7.5 

7.5 

6.6

Runoff in 

acre-feet

762 

611 

394

32,200

332 

250 

523 

2,160 

3,330 

6,650 

1,390 

532 

426

17,360
TRIBUTARIES ABOVE GUNNISON RIVER 71

Meadow Creek near Tabernash, Colo.

Location.--Water-stage recorder, lat. 40°02'55", long. 105°46'30", in sec. 15, T. IN., 

R. 75 W., 5 miles northeast of Tabernash.

Drainage area. 7.0 square miles.

Records available. May 1936 to September 1950 (no winter records 1937, 1941-44).

Extremes.--Maximum discharge during year, 186 second-feet June 7, from rating curve extended above 100 second-feet; maximum gage height, 3.64 feet May 7, backwater from ice; 

minimum discharge not determined, occurred during period of no gage-height record.

1936-50: Maximum discharge, 244 second-feet June 9, 1944 (gage height, 3.72 feet), 

from rating curve extended above 85 second-feet; probably no flow at times during ice 

periods.

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

which are poor. No diversion above station.

Revisions (water years). W 1089: 1945(M).

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.8 

2.9 

2.8 

2.3 

2.1

2.0 

1.9 

1.8 

2.0 

2.3

»2.5 

2.5 

3.5 

3.8 

3.0

2.6 

2.8 

4.1 

3.8 

2.9

2.3 

b2.3 

2.6 

2.6 

2.3

2.3 

2.2 

2.2 

2.2 

bl.9 

bl.7

Nov.

bl.8 

bl.8 

bl.9 

b2.0 

b2.0

b2.0 

b2.0 

*2.0 

2.0 

2.0

2.0 

2.0 

2.0 

1.8 

1.6

1.6 

1.6 

1.6 

1.6 

1.6

1.5 

1.4 

1.4 

1.4 

1.4

1.4 

1.'3 

1.2 

1.2 

1.1

Dec.

(«) 

1.0

Jan.

(«) 

0.9

Feb.

(») 

0.5

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

0.4 

(«)

Apr.

0.9 

1.0 

1.0 

1.1 

1.0

1.0 

*bl.O 

bl.l 

bl.3 

1.5

1.5 

1.6 

1.8 

1.8 

1.8

1.8 

2.3 

2.7 

2.8 

2.9

3.4 

3.8 

6.2 

8.9 

8.9

9.1 

9.4 

11 

13 

13

Secondfoot-days

79.0 

50.2 

31.0

5,129.1

27.9 

14.0 

12.4 

118.6 

1,007 

1,794 

203.9 

49.9 

54.0

3,441.9

May

12 

12 

12 

12 

13

18 

b21 

b28 

b23 

19

18 

19 

18 

20 

22

26 

30 

34 

40 

48

66 

84 

86 

76 

41

32 

22 

20 

22 

35 

78

Maximum

4.1 

2.0

138

13 

86 

115 

15 

2.6 

5.3

115

June

105 

107 

69 

54 

72

110 

115 

81 

70 

78

94 

88 

78 

75 

72

84 

72 

56 

49 

41

35 

33 

28 

25 

21

19 

18 

16 

15 

14

July

13

13 

15 

12

11

10 

9.8 

10 

9.5 

8.5

8.8 

7.7 

6.7 

6.0 

5.6

5.1 

4.5 

5.1 

5.8 

4.4

4.0 

3.7 

3.4 

3.2 

3.0

3.0 

2.8 

2.6 

2.4 

2.2 

2.1

Minimum

1.7 

1.1

-

.9

12 

14 

2.1 

1.0 

.8

-

Aug.

1.9 

1.9 

2.0 

2.6 

2.1

2.1 

2.1 

2.3 

1.9 

1.8

1.9 

1.8 

1.7 

1.5 

1.4

1.4 

1.2 

1.1 

1.2 

1.5

1.1 

1.1 

1.1 

1.1 

1.1

1.9 

2.0 

1.5 

1.4 

1.2 

1.0

Mean

2.55 

1.67 

1.0

14.1

.9 

.5 

.4

3.95 

32.5 

59.8 

6.58 

1.61 

1.80

9,43

Sept.

1.0 

1.0 

1.0 

.8 

.8

.8 

.8 

.8 

.9 

1.1

1.2 

2.0 

Z.Z 

2.4 

2.3

2.1 

1.7 

1.5 

2.4 

5.3

4.0 

3.2 

2.6 

2.2 

2.0

1.8 

1.7 

1.6 

1.5 

1.3

Bunoff in 

acre-feet

157

100 

61

10,160

55

28 

25 

235 

2,000 

3,560 

404 

99 

107

6,830

Peak discharge (base. 150 sec.-ft.). June 1 (6 p.m.) 168 sec.-ft.j June 7 (5 p.m.) 186 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

'Note. No gage-height record Nov. 8 to Apr. 6 (stage-discharge relation affected by Ice during part 

of period); discharge computed on basis of 5 discharge measurements, weathr records, and records for 

stations on nearby streams.

207364 O - 52 . 6
72 TRIBUTARIES ABOVE GDNHISON RIVER

Williams River near Leal, Colo.

Location.--Water-stage recorder, lat. 39°50', long. 106°03', in sec. 31, T. 2 S., R. 77 W., 

Just downstream from Klnney Creek and 2 miles north of Leal.

Drainage area. 89.5 square miles.

Keeords available October 1933 to September 1950 in reports of Geological Survey, July 

1933 to September 1950 in reports of State\ engineer. Records since Hay 10, 1940, equivalent to earlier records if diversion to Jones Pass tunnel is added to flow past station.

Average discharge. 17 years, 104 second-feet (including diversions through Jones Pass 

tunnel).

Extremes. Maximum discharge during year, 1,200 second-feet June 17 (gage height, 3.60 

reet); minimum daily, 18 second-feet Jan. 16-27, Feb. 2, 3, 5-21, 23, 24.

1933-50: Maximum discharge observed, 1,530 second-feet June 21, 1938 (gage height,, 

3.81 feet), from rating curve extended above 1,000 second-feet; minimum daily, 13 

second-feet 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. 27).

Revisions. W 1039: Drainage area.

Bating table, water year 1949-5O, except periods of Ice effect

(gage height, In feet, and discharge, In second-feet) 

(Shifting-control Method used Dec. 5 to Bar. 15, Apr. 7-20)

.0.3 13 1.0 88 2.5 56O 

.4 19 1.1 106 3.1 870 

.5 28 1.4 178 3.6 1.2OO 

.8 61 2.0 360

Discharge, In eecond-f eet , Hater year October 1949 to September 1950

Day

1 

Z

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

Oct.

44

43 

4O 

38 

36

37 

35 

35 

4O 

40

39 

4O 

46 

43 

37

35 

36 

39 

4O 

4O

34 

35 

37 

36 

35

34 

35 

32 

34 

31 

28

Hov.

31 

31 

31 

30 

28

29 

28 

28 

31 

*32

31 

27 

24 

30 

29

27 

27 

27 

26 

25

24 

24 

26 

30 

b24

b25 

b24 

b24 

b24 

b24

Dec.

b24 

b23 

b22 

b22 

22

24 

24 

24 

25 

24

 22 

21 

21 

21 

21

21 

21 

21 

22 

22

22 

22 

21 

22 

21

20 

20 

20 

20 

20 

20

Jan.

20 

20 

b20 

b20 

21

21 

20 

19 

19 

19

19 

19 

19 

21 

 21

18 

18 

18 

18 

18

18 

18 

18 

b!8 

b!8

b!8 

18 

19 

19 

19 

19

Feb.

20 

bis 

bis 

19 

IS

18 

18 

18 

18 

18

18 

18 

*18 

18 

18

18 

18 

18 

18 

18

18 

20 

18 

18 

19

19 

20 

20

»

Month

Octo 

Hove 

Dece

Ca

Janu 

flebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Va

 her. ...........-----------------------_

lendar year 1949

ter year 1949-SO .......................

Mar.

21 

21 

21 

21 

20

20 

20 

21 

21 

20

20 

20 

22 

21 

21

21 

21 

22 

21 

22

21 

22 

21 

22 

22

21 

21 

21 

21 

21 

21

Apr.

21 

22 

20 

19 

19

22 

24 

29 

35 

32

29 

31 

38 

43 

4O

37 

38 

38 

35 

38

46 

53 

56 

47 

42

42 

39 

43 

42 

37

Secondfoot-days

1,154 

S21 

675

4O,214

590 

515 

651 

1,057 

4,326 

14,093 

3,997 

1,319 

1,189

30,387

May

4O 

52 

78 

S7 

66

61 

58 

56 

53 

54

65 

80 

85 

1O6 

135

128 

173 

192 

165 

183

226 

280 

322 

319 

271

200 

152 

14O 

133 

152 

214

Maxima.

46 

32 

25

888

21 

20 

22 

56 

322 

942 

259 

59 

64

942

June

271 

319 

525 

259 

280

395 

475 

415 

37S 

427

533 

62O 

700 

695 

700

750 

942 

770 

64O 

524

459 

435 

411 

411 

395

36O 

325 

307 

295 

277

July

259 

250 

232 

226 

211

192 

178 

178 

168 

157

145 

135 

126 

117 

113

1O4 

101 

101 

95 

90

84 

82 

80 

. 78 

77

73 

73 

77 

69 

65 

61

Aug.

59 

57 

57 

58 

54

54 

51 

49 

47 

44

46 

44 

43 

39 

38

37 

36 

35 

34 

32

32 

31 

31 

32 

39

47 

46 

39 

3S 

36 

34

i 

Minimum Mean

28 37.2 

24 27.4 

20 21. S

17 110

18 19.0 

18 I 18.4 

20 21.0 

19 35.2 

4O 14O 

259 470 

61 129 

31 42.5 

24 39.6

18 83.3

Sept.

32 

31 

30 

24 

24

24 

28 

29 

4O 

40

41 

52 

50 

48 

47

43 

41 

41 

48 

64

50 

47 

43 

42 

41

4O 

39 

39 

36 

35

Runoff In 

acre-feet

2,290 

1,630 

1,340

79,770

1,170 

1.020 

1,290 

2,1OO 

8,580 

27,950 

7,930 

2,620 

2,360

60,280

* Winter discharge easuraaent made on this day. 

b Stage-discharge relation affected by Ice.
TRIBUTARIES ABOVE GUNNISON RIVER 73

Williams River near Parshall, Colo.

Location. Water-stage recorder, lat. 40°00', long. IDS 0 !! 1 , in SE£ sec. 36, T. IN., R. 

79 W., 150 feet downstream from bridge on State Highway 286, 2^ miles upstream from 

Battle Creek, and 4 miles south of Parshall. Datum of gage is 7,805.00 feet above mean 

sea level, unadjusted.

Drainage area. 186 square miles.

Kecords available. July 1904 to September 1924 and October 1933 to September 1950 in reports of Geological Survey. July 1904 to September 1924 and June 1933 to September 1950 

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.

Average discharge. 37 years (1904-24, 1933-50), 155 second-feet (including diversion to 

Jones Pass tunnel).

Extremes.--Maximum discharge during year, 960 second-feet June 18 (gage height, 3.55 feet); 

minimum daily, 24 second-feet Dec. 14, 15.

1904-24, 1933-50: Maximum discharge observed,"2,570 second-feet June 14, 1918 (gage 

hiehgt, 6.0 feet, site and datum then in use), from rating curve exterifled above 1,400 

second-feet; a higher discharge probably occurred June 15, 1918, when gage was destroyed; minimum daily, 10 second-feet Sept. 15-17, 1934.

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

wnich are fair. Transmountain diversions (see p. 27) and diversions for irrigation 

above station.

Rating table, vater year 1949-50, except periods of ice effect 

(gage height, in feet, and discharge, In second-feet)

1.0 21 1.7 122 

1.1 29 2.O 200 

1.2 38 3,5 395 

1.4 63 3.6 645 

1.5 80 3.6 990

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

63 

62 

60 

63 

62

60 

59 

56 

60 

65

63 

63 

72 

72 

63

60 

60 

66 

65 

66

59 

59 

62 

60 

59

59 

59 

58 

6O 

59 

49

Nov.

60 

60 

56 

55 

54

54 

54 

55 

55 

*55

54 

51 

48 

56 

54

51 

53 

54 

54 

53

48 

47 

46 

48 

54

51 

50 

49 

48 

42

Dec.

33 

28 

26 

26 

27

28 

29 

29 

29 

29

28 

26 

25 

24 

24

25 

26 

27 

28 

27

26 

25 

26 

26 

25

25 

25 

26 

27 

67 

28

Jan.

28 

27 

26 

25 

25

27 

29 

30

31 

31

30 

30 

30 

30 

«Sl

30 

33 

34 

35 

35

34 

33 

34 

34 

33

29 

28 

29 

33 

31 

33

Feb.

32 

29 

29 

29 

31

32 

32 

31 

29 

29

31 

32 

*32 

33 

34

34 

34 

34 

35 

35

35 

35 

36 

37 

38

38 

38 

38

Month

Octo 

Move

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Ha

her. .....................................

lendar year 1949

ter year 1949-50 .......................

Mar.

38 

38 

36 

37 

38

38 

36 

35 

35 

36

36 

35 

34 

34 

35

35 

 36 

42 

47 

39

36 

37 

38 

4O

36

38 

40 

37 

36 

38 

42

Apr.

38 

40 

39 

40 

42

43 

53 

62 

70 

63

*56 

59 

70 

92 

94

77 

80 

92 

80 

84

120 

146 

151 

127 

92

96 

84 

107 

100 

86

Secondfoot-days

1,903 

1,569 

830

55,464

948 

932 

1,158 

2,383 

5,629 

15,122 

3,118 

1,785 

1,642

37,019

May

88 

111 

159 

194 

151

127 

122 

111 

111 

100

100 

107 

113 

127 

2O7

186 

167 

235 

192 

192

228 

307 

355 

367 

315

243 

186 

167 

159 

167 

235

Maximum

72 

60

33

1,060

35 

38 

47 

151 

367 

876 

21O 

73 

94

876

June

315. 

387 

490 

363 

347

440 

575 

540 

455 

485

590 

694 

766 

760 

755

777 

876 

788 

667 

560

460 

422 

395 

404 

387

351 

311 

283 

251 

228

July

210 

192 

180 

172 

162

139 

127 

136 

129 

120

115 

98 

80 

75 

73

72 

63 

63 

62 

58

54 

53 

51 

50 

59

94 

92 

94 

86 

82 

77

Aug.

73 

70 

70 

73 

68

70 

66 

63 

59 

56

55 

55 

53 

50 

48

48 

44 

48 

51 

51

50 

50 

49 

49 

54

63 

68 

59 

59 

58 

55

Sept.

46 

28 

28 

27 

26

26 

26 

333 

343 

345

351 

376 

374 

70 

68

65 

62 

59 

66 

94

75 

70 

66 

65 

63

62 

59 

58 

56 

55

Mini Hean «££

49 61.4 3,770 

42 52.3 3,110 

24 26.8 1,650

24 152 110,000

25 30.6 1,880 

29 33.3 1,850 

34 37.4 2,300 

38 79.4 4,730 

88 182 11,160 

228 504 29,99O 

50 101 6,180 

44 57.6 3,540 

26 54.7 3,26O

24 1O1 73,420

* Winter discharge measurement made on this day.

3 No gage-height record} discharge computed on basis of veather records and records for station 

near Leal.

Hote. Stage-discharge relation affected by Ice Nov. 22-24, Dec. 1 to Mar.23, Mar. 28-30.
74 TRIBUTARIES ABOVE GUNNISON RIVER

Williams Fork Reservoir near Parshall, Colo.

Location.--Tape gage, lat. 40°02', long. 106°12', at dam on Williams River in sec. 23, T.

 T¥77 R. 79 ¥., 2 miles abbve mouth of Williams River and 2£ miles southwest of 

Parshall. Datum of gage is mean sea level (levels of city engineer of Denver).

Records available. October 1948 to September 1950 in reports of Geological Survey.

 October 1939 to September 1950 in files of city engineer of Denver.

Extremes.--Maximum contents observed during year, 6,620 acre-feet July 2 to Aug. 18 (ele-

 vation, 7,703.0 feet); minimum observed, 237 acre-feet Sept. 5-30 (elevation, 7,656.0 

feet).

1948-50: Maximum contents observed, 6,620 acre-feet July 19 to Sept. 3, 1949, July 

2 to Aug. 18, 1950 (elevation, 7,703.0 feet); minimum observed, those of Sept. 5-30, 

1950.

Remarks. Reservoir is formed by concrete arch dam. Dam completed in October 1938; storage

 Began in April 1939. Capacity of reservoir, 7,180 acre-feet between elevations 7,633 

feet (invert of outlet pipe) and 7,705 feet (top of taintor gates on spillway). No 

dead storage. Figures given herein represent usable contents. Water Is used to compensate for diversions to Jones Pass tunnel (see p. 27) made during period 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 1949 to September 1950

Date

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

Calendar year 1949....

Water year 1949-5XJ. . . .

Elevation 

(feet)t

,664.4

-

,701.8

-

Contents 

(acre- feet)

677

677

-

677

577

5,350

6,300

6,620

237

-

Change in contents 

during month 

(acre-feet)

0

-533

0

0

0

+3,210

+1,460

+950

+320

-4,450

-1,930

-440

t Elevation at 8 a.m.
TRIBUTARIES ABOVE GUNNISON RIVER 75

Williams River below Williams Pork Reservoir, Colo.

Location. Water-stage recorder, lat. 40°02i, long. 106°12', in NE^ sec. 23, T. IN., R. 79 

*., a quarter of a mile downstream from Williams Pork Reservoir Dam, about 2 miles upstream from mouth, and 2 miles southwest of Parshall.

Drainage area. 234 square miles.

Records available. October 1948 to September 1950 (no winter records 1949).

Extremes. Maximum discharge during year, 1,150 second-feet June Iff (gage height, 5.54 

reet), from rating curve extended above 640 second-feet; minimum daily, 17 second-feet 

May 4, from rating curve extended below 50 second-feet.

1948-50: Maximum discharge, 1,240 second-feet June 18, 1949 (gage height, 5.70 feet), 

from rating curve extended above 640 second-feet; minimum daily recorded, 3.3 second-feet 

Oct. 1, 1948, from rating curve extended below 50 second-feet.

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

Flow regulated by Williams Pork Reservoir (see preceding page). Diversions above station 

for irrigation. Transmountain diversion through Jones Pass tunnel (see p. 27).

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

65 

71 

80 

85 

85

84 

84 

83 

70 

61

62 

74 

80 

80 

80

80 

80 

82 

82 

82

83 

82 

82 

82 

82

82 

82 

82 

82 

82 

80

Nov.

79 

79 

79 

79 

78

66 

59 

59 

59

61

61 

62 

62 

62 

62

62 

62 

62 

61 

61

61 

70 

75 

75 

63

56 

56 

56 

56 

56

Dec.

56 

56 

56 

56 

42

36 

36 

36 

36 

37

37 

37 

37 

37 

37

37 

37 

41 

45 

45

45 

45 

45 

45 

44

45 

46 

47 

48 

48 

48

Jan.

48 

48 

49 

49 

50

51 

52

 Feb.

53

Month

00 to 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lender year

ter year 1949-50 .......................

Mar.

62

Apr.

62

50

50 

50

49 

49 

28

18 

18

Seeondfoot-days

2,451 

1,939 

1,343

-

1,581 

1,484 

1,922 

1,568 

5,102 

16,073 

3,968 

4,425 

2,565

44,421

May

18 

18 

18 

17 

83

145 

141 

134 

125 

122

113 

113 

122 

128 

180

205 

169 

213 

203 

193

209 

264 

323 

355 

325

253 

209 

173 

164 

162 

205

Maximum

85 

79 

56

-

355 

1,040 

210 

266 

246

1,040

June

274 

358 

458 

388 

338

419 

539 

565 

486 

479

546 

688 

776 

835 

820

825 

955 

1,040 

855 

688

561 

500 

455 

442 

445

338 

280 

250 

245 

225

Minimum

July

210 

195 

185 

175 

165

160 

155 

150 

171 

182

157 

142 

125 

96 

94

109 

102 

89 

101 

112

96 

76 

70 

76 

79

109 

139 

125 

106 

108 

109

61 

56 

36

-

18 

17 

225 

70 

47 

24

17

Aug.

99 

96 

82 

85 

96

92 

92 

92 

82 

63

57 

75 

89 

83 

57

47 

47 

134 

192 

195

193 

193 

197 

219 

236

244 

244 

255 

266 

266 

257

Mean

79.1 

64.6 

43.3

-

51.0 

53 

62 

52.3 

165 

536 

128 

143 

85.5

122

Sept.

246 

236 

221 

201 

66

25 

24 

31 

39 

48

38 

37 

45 

56 

68

72^ 

74 

84 

88 

89

92 

91 

92 

91 

91

57 

54 

67 

71 

71

Runoff In 

acre -feet

4,860 

3,850 

2,660

-

3,140 

2,940 

3,810 

3,110 

10,120 

31,880 

7,870 

8,780 

5,090

88,110

Note. No gage-height record Jan. 4 to Apr. 23, June 27 to July 7; discharge computed on basis of 

discharge measurement made July 7, weather records, and records for station near Parshall.
76 TRIBUTARIES ABOVE GUNNISON RIVER

Keyser Creek near Leal, Colo.

Location. Water-stage recorder, lat. 39°54'50", long. 106°01'00", in SE^ sec. 33, T. IS., 

H. YY W., 200 feet upstream from Slmpson Creek and 7 miles northeast of Leal.

Drainage area. 13.7 square miles.

Records available. August 1942 to September 1950 (no winter records 1942-43).

Extremes. Maximum discharge during year, 149 second-feet June 17 (gage height, 2.82 feet), 

from rating curve extended above 90 second-feet; minimum not determined, occurred during 

period of no gage-height record.

1942-50: Maximum discharge, 167 second-feet May 21, 1948, from rating curve extended 

above 60 second-feet; maximum gage height, 2.89 feet June 21, 1947; minimum discharge 

not determined, occurred during period of no gage-height record.

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

Mo diversion or regulation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

8.6 

8.9 

8.3 

7.7 

7.4

7.1 

6.8 

6.5 

7.1 

7.4

8.O 

7.4 

8.9 

8.9 

8.0

7.4 

8.3 

8.9 

8.6 

8.0

7.7 

11 

11 

11 

11

10 

10 

10 

1O 

9.9 

9.6

Nov.

(») 

9.0

Dec.

(*) 

4.5

Jan.

(») 

1.5

Feb.

(») 

4.5

Month

Octo 

Move

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Hay.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

5.5 

(»)

Apr.

(») 

6.0

Secondfoot-days

269.4 

270. O 

139.5

6,941.6

46.5 

126.0 

170.5 

180.0 

768 

2,382 

855 

272.7 

205.2

5,684.8

May

10 

10 

13 

14 

12

11 

12 

11 

11 

11

12 

15 

17 

18 

23

25 

32 

35 

28 

26

3O 

35 

40 

42 

36

33 

32 

33 

34 

47 

60

Maximum

11

128

60 

130 

52 

13 

9.5

130

June

60 

63 

62 

51 

60

68 

77 

70 

67 

70

80 

90 

98 

110 

107

120 

130 

114 

96 

89

83 

79 

78 

75 

74

67 

63 

63 

60 

58

July

52 

51 

46 

44

43

41 

38 

38 

36 

34

33 

31 

29 

26 

26

25 

23 

24 

21 

20

19 

18 

17 

17 

16

16 

15 

15 

14 

14 

13

Minimum

6.5

-

10 

51 

13 

6.2 

5.8

-

Aug.

13 

12 

13 

12 

12

12 

11 

10 

9.8 

9.5

9.8 

9.2 

8.9 

8.6 

8.0

7.7 

7.4 

7.1 

7.1 

7.1

7.1 

6.8 

6.8 

6.8 

7.4

8.9 

7.7 

7.1 

6.5 

6.2 

6.2

Mean

8.69 

9.0 

4.5

19.0

1.5 

4.5 

5.5 

6.O 

24.8 

79.4 

27.6 

8.80 

6.84

15.6

Sept.

6.2 

6.2 

6.0 

6.0 

6.0

6.0 

5.8 

6.0 

6.8 

7.1

7.1 

8.6 

8.3 

8.0 

7.7

6.8 

6.5 

6.5 

9.2 

9.5

7.7 

6.8 

6.P 

6.8 

6.5

6.5 

6.0 

6.0 

6.O 

5.8

Bunoff In 

acre -feet

534 

536 

277

13,780

92 

250 

338 

357 

1,520 

4,720 

1,700 

541 

407

11,270

Peak discharge (base. 100 see.-ft.). June 7 (6:30 p.m.) 101 sec.-ft.; June 17 (8 p.m.) 149 sec.-ft.

* Winter discharge measurement made on this day.

Note. Ho gage-height record Oct. 22 to May 2 (stage-discharge relation affected by Ice durlng'partof 

period), May 6, 7, 2O-30; discharge computed on basis of 7 discharge measurements, recorded range In 

stage, veather records, and records for St. Louis Creek near Fraser.
TRIBUTARIES ABOVE GOMISOH RIVER 77 

Troublesome Creek near Troublesome, Colo.

Location. Water-stage recorder,- lat. 40°04', long. 106°19', In sec. 12, T. 1 H., R. 80 

 W., bO feet upstream from bridge on U. S. Highway 40, half a mile upstream from mouth,

and half a mile west of old Troublesome post office. Datum of gage is 7,344.13 feet

above mean sea level, datum of 1929.

Drainage area. 178 square miles.

Records available. July 1904 to October 1905, April 1922 to September 1924, October 1941 

to September 1950. July 1937 to September 1941 in files of Bureau of Reclamation.

Average discharge. 13 years (1904-5, 1921-24, 1941-50), 54.1 second-feet.

Extremes. Maximum discharge during year, 275 second-feet May 22, from rating curve-extended above 130 second-feet; maximum gage height, 5.55 feet Feb. 13 (backwater from ice): 

minimum daily, 13 second-feet July 16, 17, Sept. 30.

1922-24, 1941-50: Maximum discharge, 1,230 second-feet July 23, 1945 (gage height, 

4.80 feet, site and datum then in use), from rating curve extended above 370 secondfeet; minimum daily, 1.4 second-feet July 11, 1946.

Remarks. Records fair. Diversions above station for irrigation. 

Revisions. M 959: Drainage area.

Discharge, in second- f set , water year October 1949 to September 1950

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 

3O 

31

Oct.

34 

34

21 

25 

23

25 

25 

22 

23 

26

26 

26 

27 

26 

23

22 

22 

25 

26 

30

28 

26 

21 

22 

22

ZZ

19 

19 

22 

2O 

IB

MOT.

2O 

22 

22 

23 

25

24 

24 

22 

24 

25

24 

23 

23 

25 

27

27 

28 

 30 

30 

30

27 

25 

30 

35 

28

30 

26 

25 

22 

22

Dec.

2O 

2O 

20 

21 

22

22 

25 

27 

28 

27

25 

 24 

23 

22 

25

23 

23 

23 

24 

24

22 

21 

21 

22 

22

21 

2O 

20. 

21 

21 

21

Jan.

22 

20 

16 

15 

14

14 

14 

14 

14 

14

15 

15 

15 

 15 

15

15 

16 

16 

16 

16

17 

16 

16 

16 

16

15 

15 

15 

16 

16 

16

Feb.

15 

15 

15 

15 

16

17 

17 

16 

15 

16

 16 

16 

16 

16 

16

16 

16 

16 

16 

17

17 

17 

17 

17 

18

18 

IB 

19

Month

Octo 

HOTC 

Dece

Ca

Jaau 

Febr 

Marc 

Aprl 

"ay.

June 

July 

Augu 

Sept

Ma

 her

lendar year 1949

ter year 1949-50 .......................

Mar.

19 

19 

2O 

20 

21

21 

21 

21 

22 

23

23 

23 

24 

25 

27

3O 

33 

 35 

32 

31

32 

33 

33 

34 

35

31 

31 

32 

32 

31 

35

Apr.

44 

47 

42 

36 

42

6O 

72 

 85 

67 

46

42 

50 

62 

72 

73

69 

72 

92 

80 

85

117 

158 

156 

119 

103

93 

92 

89 

85 

72

Secondfoot-days

750 

768 

TOO

23,529

485 

459 

849 

2,322 

3,492 

2,463 

673 

622 

581

14.164

May

65 

61 

66 

104 

94

81 

69 

67 

66 

56

62 

78 

87 

109 

132

136 

148 

180 

128 

136

156 

212 

224 

208 

176

130 

109 

99 

82 

78 

93

Maxim*

34

35 

28

367

22 

19 

35 

158 

224 

180 

40 

25 

27

224

June

132 

174 

180 

144 

132

136

130 

97 

82

78 

87 

90 

83 

77

78 

SO 

Bl 

78 

61

48 

46 

41 

35 

29

29 

24 

24 

24 

23

July

19 

19 

19 

19 

18

19 

21 

27 

40 

31

31 

23 

15 

15 

14

13 

13 

16 

26 

26

22 

19 

18 

20 

28

26 

26 

25 

22 

22 

21

Minimal

18 

2O 

2O

18

14 

15 

19 

36 

56 

23 

13 

15 

13

13

Aug.

19 

17 

19 

21 

22

24 

22 

22 

22 

20

25 

24 

22 

22 

22

23 

22 

21 

2O 

19

19 

18 

18 

18 

19

19 

17 

17 

18 

16 

15

Mean

24.2 

25.6 

22.6

64.5

15.6 

16.4 

27.4 

77.4 

113 

82.1 

21.7 

20.1 

19.4

38.8

Sept.

14 

14 

17 

17 

16

16 

15 

15 

19 

22

21 

26 

25 

22 

22

27 

24 

2O 

19 

26

26 

21 

20 

19 

2O

18 

16 

16 

15 

13

Runoff In 

acre-feet

1,490 

1,520 

1,390

46,680

962 

910 

1.68O 

4,610 

6,930 

4,890 

1,330 

1,230 

1,150

28,090

teak discharge (base, 350 aec.-ft.K Ho peak above base.

Winter discharge easureBent made on this day. 

Hote. Stage-discharge relation affected by Ice far. 19-22, Dec. 1-6, Jan. 21 to Feb. 3, Mar. 18 to 

AprTT. Ho gage-height record Oct. 31 to HOT. 17, Dec. 1O to Jan. 2O, Feb. 4 to Mar. 17 (stage-discharge relation affected by Ice during ost of periods); discharge computed on basis of 3 discharge 

weather records, and records for stations on nearby stream-
78 TRIBUTARIES ABOVE GUWISON RIVER

Blue River at Dillon, Colo.

Location.--Water-stage recorder, lat. 39°36'50", long. 106 0 03'05", in sec. 18, T. 5 S., R. 

 77 W., 5 feet upstream from bridge on U. S. Highway 6 at edge of Dillon, a short distance

upstream from Snake River and Tenmile Creek. Datum of gage is 8,821.42 feet above mean

sea level, unadjusted.

Drainage area. 129 square miles.

Records available. October 1910 to September 1950.

Average discharge. 40 years, 118 second-feet.

Extremes.--Maximum discharge during year, 656 second-feet June 17; maximum gage height, 

4.10 feet Apr. 5 (ice Jam); minimum daily discharge, 18 second-feet Feb. 3.

1910-50: Maximum discharge observed, 1,180 second-feet June 2, 1914, June 14, 1924; 

maximum gage height observed, 4.35 feet June 2, 1914; minimum discharge observed, 7.4 

second-feet Mar. 22, 1933 (discharge measurement).

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

which are fair. Diversions above station for irrigation are of little significance.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

52 

54 

52 

51 

49

48 

57 

60 

62 

64

63 

62 

62 

63 

63

62 

63 

62 

63 

64

60 

55 

54 

54 

55

54 

52 

51 

51 

47 

46

Nov.

49 

48 

48 

48 

48

45 

45 

44 

44 

44

42 

43 

42

40 

 39

41 

40 

39 

40 

41

39 

42 

42 

38 

38

38 

37 

38 

37 

39

Dec.

38 

39 

39 

38 

41

39

34 

39 

34 

35

32 

32 

 30 

27 

25

27 

28 

27 

29 

27

26 

25 

27 

26 

25

25 

26 

27 

27 

27 

27

Jan.

26 

26 

22 

20 

20

2O 

21 

21 

21 

21

20 

21 

21 

21 

21

22 

22 

23 

 23 

23

21 

20 

20 

21 

22

21 

21 

22 

22 

23 

23

Feb.

22 

21 

18 

19 

20

21 

21 

23 

22 

20

22 

22 

21 

23 

24

26 

 26 

24 

23 

23

24 

24 

24 

24 

24

24 

24 

24

Month

Octo 

Nove 

Dece

Ca

Janui 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

Lendar year 1949 

Bry

ter year 1949-50 .......................

Mar.

24 

24 

25 

25 

26

25 

24 

24 

26 

26

26 

26 

25 

25 

26

26

26 

25 

25 

25

25 

25 

26 

 26 

26

25 

25 

25 -25 

24 

24

Apr.

26 

27 

28 

*29 

28

29 

31 

32 

34 

34

38 

37 

38 

42 

45

42 

43 

44 

46 

47

56 

73 

91 

91 

88

80 

76 

83 

81 

83

Secondfoot-days

1,755 

1,258 

948

48,568

671 

633 

780 

1,522 

5,697 

13,135 

5,803 

2,185 

1,484

35,871

May

83 

90 

1O6 

133 

141

124 

113 

108 

108 

108

113 

126 

146 

152 

159

175 

182 

208 

208 

196

206 

229 

301 

346 

343

294 

263 

246 

240 

226 

224

Maximum

64 

49

41

9OO

26 

26 

26 

91 

346 

629 

304 

99 

56

629

June

266 

336 

413 

385 

350

388 

480 

488 

440 

428

472 

536 

544 

544 

548

552 

629 

6 2O 

532 

484

452 

432 

388 

374 

385

360 

343 

332 

322 

312

July

304 

287 

273 

253 

240

232 

232 

238 

229 

221

240 

232 

213 

199 

184

175 

170 

175 

187 

172

159 

148 

133 

126 

122

117 

115 

113 

1O8 

104 

102

Minimum

46 

37 

65

22

20 

18 

24 

26 

83 

266 

102 

56 

42

18

Aug.

99 

99 

95 

90 

88

86 

83 

78 

76 

72

70 

70 

72 

72 

70

68 

66 

65 

63 

62

62 

60 

59 

57 

57

57 

57 

60 

59 

57 

56

Mean

56.6 

41.9 

30.6

133

21.6 

22.6 

25.2 

50.7 

184 

438 

187 

70.5 

49.5

98.3

Sept.

54 

52 

50 

50 

48

48 

47 

51 

49 

49

50 

54 

55 

56 

56

54 

50 

48 

48 

48

48 

49

49 

48 

48

48 

47 

45 

43 

42

Runoff In 

acre-feet

3,480 

2,500 

1,88O

96,340

1,330 

1,260 

-, 1,550 

3,020 

11,30O 

26,050 

11,510 

4,330 

2,940

71,150

Peak discharge (base, 5OO sec . -f t . ) . June 8 (7 a.m.) 508 sec. -ft.! June 17 (12 ra.) 656 sec. -ft. Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Oct. 31, Dec. 12 to Apr. 6 (no gage-height record 

Jan. 16 to Mar. 31; discharge computed on basis of 3 discharge measurements, weather records, and 

records for nearby stations).
TRIBUTARIES ABOVE GUNNISON RIVER 79

Blue River above Green Mountain Reservoir, Colo.

Location.--Water-stage recorder, lat. 39°49'55", long. 106°13'25", in sec. 34, T. 2 S., R. 

79 w., 300 feet north of State Highway 9, Just upstream from high-water line of Green 

Mountain Reservoir, 1 mile downstream from Brush Creek, and 18 miles southeast of Kremmling. Datum of gage is 7,946.56 feet above mean sea level, unadjusted.

Drainage area. 514 square miles (revised). 

Records available. May 1944 to September 1950.

Extremes. Maximum discharge during year, 3,260 second-feet June 17; maximum gage height 

recorded, 6.75 feet Dec. 16 (ice Jam); minimum daily discharge, 71 second-feet Jan. 11, 

12, Feb. 3.

1944-50: Maximum discharge, 3,750 second-feet June 21, 1947; maximum gage height 

recorded, that of Dec. 16, 1949; minimum daily discharge, 69 second-feet Dec. 28, 1944, 

Jan. 4, 1945.

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

which are fair. Many small diversions above station for irrigation.

Discharge, In second^feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

228 

221 

209 

205 

198

194 

194 

194 

224 

221

217 

217 

228 

228 

224

221 

224 

245 

236 

228

205 

194 

205 

198 

198

194 

187 

187 

191 

191 

177

Nov.

190 

190 

190 

185 

184

178 

170 

170 

170 

164

167 

162 

161 

*160 

170

154 

160 

154 

152 

154

b!53 

b!50 

b!55 

b!60 

152

149 

149 

152 

146 

138

Dec.

140 

b!38 

b!37 

b!38 

b!46

b!38 

bl20 

b!30 

b!36 

b!27

bl!6 

bllO 

b!02 

b94 

b87

*b85 

97 

100 

96 

100

93 

90 

95 

93 

90

92 

94 

95 

95 

94 

94

Jan.

92 

90 

85 

78 

75

74 

76 

76 

76 

76

71 

71 

74 

74 

77

82 

*84 

86 

88 

88

84 

80 

80 

83 

85

83 

83 

85 

88 

90 

90

Feb.

87 

81 

71 

75 

80

83 

84 

87 

88 

80

85 

85 

83 

91 

*97

98 

97 

93 

89 

88

89 

90 

92 

94 

94

94 

94 

94

Month

Goto 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl

Mftv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

95 

96 

96 

97 

99

98 

95 

97 

100 

100

100 

97 

94 

95 

100

100 

100 

96 

96 

95

*95 

95 

94 

96 

100

106 

112 

112 

112 

110 

110

Apr.

122 

131 

140 

152 

149

150 

200 

*254 

262 

209

184 

205 

241 

300 

290

236 

245 

280 

258 

280

370 

463 

497 

468 

360

350 

325 

370 

386 

325

Secondfoot-days

6,483 

4,889 

3,362

183,988

2,524 

2,463 

3,088 

8,202 

23,668 

59,360 

21,739 

8,999 

5,880

150,657

Peak discharge (base, 2,600 sec. -ft.). June 7 (1 a.m.

May

325 

397 

521 

618 

509

441 

402 

392 

392 

397

468 

575 

624 

670 

788

764 

909 

1,040 

876 

844

972 

1,220 

1,420 

1,520 

1,280

1,020 

884 

812 

780 

788 

1,020

Maximum

245 

190 

146

3,330

92 

98 

112 

497 

1,520 

2,850 

1,220 

375 

241

2,850

June

1,320 

1,650 

1,860 

1,370 

1,460

2,280 

2,760 

2,390 

1,940 

2,120

2,460 

2,690 

2,610 

2,540 

2,520

2,590 

2,850 

2,610 

2,200 

1,950

1,850 

1,780 

1,580 

1,610 

1,580

1,470 

1,410 

1,360 

1,300 

1,250

July

1,220 

1,140 

1,080 

1,040 

999

945 

918 

927 

884 

836

852 

820 

756 

712 

650

605 

575 

612 

593 

563

533 

527 

497 

480 

468

446 

430 

424 

419 

402 

386

Minimum

177 

138 

85

80

71 

71 

94 

122 

325 

1,250 

386 

213 

160

71

Aug.

375 

370 

360 

360 

355

355 

345 

330 

320 

315

315 

320 

310 

295 

285

285 

275 

266 

262 

258

249 

245 

241 

236 

241

254 

254 

241 

241 

228 

213

Mean

209 

163 

108

504

81.4 

88.0 

99.6 

273 

763 

1,980 

701 

290 

196

413

Sept.

205 

202 

194 

187 

184

180 

184 

180 

194 

194

194 

232 

241 

228 

217

209 

198 

194 

194 

236

209 

177 

191 

191 

191

187 

180 

177 

170 

160

Runoff In 

acre-feet

12,860 

9,700 

6,670

364,900

5,010 

4,890 

6,120 

16,270 

46,940 

117,700 

43,120 

17,850 

11,660

298,800

) 3,190 sec. -ft. s June 17 (1:30 a.m.) 3,260

sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 2-13, Dec. 17 to Apr. 7 (stage-discharge relation affected by 

Ice during most of period); discharge computed on basis of 3 discharge measurements, recorded range 

In stage, weather records, and records for nearby stations.
80 TRIBUTARIES ABOVE GUNNISON RIVER

Green Mountain Reservoir near Kremmling, Colo.

Location. Mercury gage, 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. Datum of gage is 7,800 feet above mean sea level (Bureau 

of Reclamation bench mark). Gage heights have been reduced to elevations above mean 

sea level.

Records available. November 1942 to September 1950.

Extremes. Maximum contents observed during year, 146,800 acre-feet July 30 (elevation, 

 7,949.98 feet); minimum observed, 41,840 acre-feet May 9 (elevation, 7,879.07 feet). 

1942-50: Maximum contents observed, 148,600 acre-feet July 3,-1947 (elevation,

7,950.81 feet); minimum observed, 40,690 acre-feet Apr. 25, 1943 (elevation, 7.877.85

feet); no storage prior to Nov. 16, 1942.

Remarks. Reservoir is formed by an earth- and rock-fill dam. Dam completed in November 

T932. Capacity of reservoir, 146,900 acre-feet between elevations 7,800 feet (sill of 

outlet gate) and 7,950 feet (top of radial spillway gates). Dead storage, 7,760 acrefeet. 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."

Monthly elevation and contents, water year October 1949 to September 1950

Date

Calendar year 1949. . . .

Feb. 28.................

Mar. 31.................

Apr. 5tT. ................

l"Bry 31.................

Water year 1349-50. . . .

Elevation 

(feet)

* 941 49

-

-

Contents 

(acre-feet)

-

-

Change In contents 

during month 

(acre-feet)

-1-34,920

-15,900

-21,500
TRIBUTARIES ABOVE GUNNISON RIVER 81

Blue River below Green Mountain Reservoir, Colo.

Location. Water-stage recorder, lat. 39°56', long. 106°21', in NE^ sec. 33, T. IS., R. 

BO w., Just downstream from Spring Creek, 4 miles downstream from Green Mountain Dam, 

and 10 miles southeast of Kremmling.

Drainage area. 623, square miles.

Records available. October 1937 to September 1950.

Average discharge. 13 years, 497 second-feet.

Extremes. Maximum discharge during year, 1,860 second-feet June 15 (gage height, 4.17 

reet); minimum daily, 16 second-feet Oct. 22, 23.

1937-50: Maximum discharge, 4,000 second-feet June 4, 1938 (gage height, 5.93 

feet), from rating curve extended above 3,000 second-feet; minimum daily (prior to construction of Green Mountain Reservoir), 80 second-feet Feb. 18-24, 1938, Feb. 18,19, 

1940; no flow at times during 1943.

Remarks. Records good except those for period of no gage-height record and those below 50 

second-feet, which are fair. Flow regulated by Green Mountain Reservoir (see preceding 

page). Many small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

278 

80 

417 

494 

238

190 

89 

90 

66 

538

86 

46 

74 

137 

17

17 

35 

50 

334

127

56 

16 

16 

120 

156

136 

176 

163 

60 

59 

112

Hov.

211 

179 

240 

195 

200

44

218 

331 

204 

203

194 

35 

71 

344 

209

276 

184 

137 

20 

186

256 

218 

470 

70 

30

29 

17 

341 

230 

180

Dec.

364 

334 

129 

52 

572

400 

415 

782 

363 

122

19 

616 

508 

504 

380

457 

191 

139 

428 

660

534 

308 

455 

249 

254

261 

444 

439

415 

455

191

Jan.

188 

196 

592 

666 

397

466 

147 

191 

215 

215

201 

2O8 

196 

139 

213

428 

433 

435 

580 

412

197 

185 

386 

397 

486

558 

457 

169 

170 

596 

508

Feb.

402 

442 

290 

348 

280

450 

344 

£85 

300 

316

129 

140 

302 

284 

314

388 

436 iao

170 

438

562 

456 

582 

555 

202

77 

681. 

710

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Mflv

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-5O .......................

Mar.

738 

704 

658 

380 

222

680 

901 

866 

868 

991

708 

333 

1,000 

738 

736

768 

413 

431 

110 

864

639 

656 

676 

697 

630

718 

374 

670 

672 

645 

687

Apr.

604 

532 

670 

585 

678

650 

674 

879 

844 

1.12O

1,170 

1,150 

1,140 

1,080 

1,090

805 

1,O6O 

1,110 

894 

776

582 

719 

66 

869 

904

578 

902 

854 

206 

76

Secondfoot-days

4,473 

5,522 

11,450

193,694

10,627 

10,063 

20,173 

23,266 

25,841 

29,992 

18,646 

18,050 

12,411

190,514

Nay

840 

675 

490 

934 

768

750 

170 

501 

788 

364

329 

355 

824 

1,030 

1,020

896 

974 

1,100 

1,110 

1,080

851 

1,050 

1,250 

1,170- 

1,220

1,170 

1,150 

1,000 

946 

.536 

500

Maximum

538 

470 

782

2,700

666 

710 

1,000 

1,170 

1,250 

1,510 

942 

746 

786

1,510

June

658 

658 

272 

110 

740

632 

668 

711 

642 

251

220 

1,260 

1,210 

1,850 

1,300

1,510 

1,360 

1,120 

1,350 

1,460

1,500 

1,470 

1,430 

1,320 

1,110

1,300 

1,110 

1,130 

1,130 

1,110

Minimum

July

912 

835 

836 

652 

746

692 

733 

579 

253 

755

706 

637 

656 

608 

216

198 

856 

942 

923 

674

626 

226 

278 

612 

735

544 

584 

456 

238 

304 

634

16 

17 

19

7

139 

77 

110 

66 

170 

110 

198 

282 

76

16

Aug.

572 

658 

661 

631 

4O8

424 

638 

708 

662 

624

649 

372 

395 

712 

746

606 

530 

556 

282 

300

687 

596 

836 

673 

682

491 

551 

734 

632 

615 

619

Mean

144 

184 

369

531

343 

359 

651 

776 

834 

1,000 

6Q1 

582 

414

522

Sept.

616 

482 

391 

502 

69S

688 

572 

664 

514 

584

629 

596 

786 

436 

334

218 

140 

376 

574 

142

294 

262 

123 

76 

29S

304 

172 

204 

326 

410

Runoff in 

acre-feet

8,870 

10,950 

22,710

384,200

21,080 

19,960 

40,010 

46,150 

51,250 

59,490 

36,980 

35,800 

24,620

377,900

Note. No gage-height record Dec. 13 to Jan. 18; discharge computed on basis of kilowatt hours 

generated by Green Mountain power plant.
82 TRIBUTARIES ABOVE GUNNISON RIVER

Snake River at Dillon, Colo.

Location.--Water-stage recorder, lat. 39°36'50", long. 106°03'05", in sec. 18, T. 5 S., R.

 VV W., at private bridge at Dillon, 100 feet north of U. S. Highway 6 and 300 feet up- ' 

stream from mouth. Datum of gage is 8,820.54 feet above mean sea level, unadjusted.

Drainage area. 92 square miles.

Kecoras available. October 1910 to September 1919, December 1929 to September 1950.

Average discharge. 30 years, 65.1 second-feet.

Extremes. Maximum discharge during year, 678 second-feet June 16 (gage height, 3.57 feet), 

rrom rating curve extended above 500 second-feet; minimum daily, 6.6 second-feet Mar. 12, 

13, 17-19.

1910-19, 1929-50: Maximum discharge, 1,200 second-feet June 13, 1935 (gage height, 

4.25 feet), from rating curve extended above 500 second-feet; minimum daily, 3 secondfeet Nov. 9, 1912.

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

which are poor. One diversion above station by a ditch which diverts water for power. 

This diversion is in sec. 19, T. 5 S., R. 76 W., 6j miles above station; water is returned to Blue River Just above mouth of Straight Creek. Discharge measurements of 

power ditch are given in following table:

Date

Oct. 16 

Nov. 15 

Dec. 13 

Jan. 19 

Feb. 17 

Mar. 24

Second-feet

35.3 

21.2 

15.8 

11.6 

10.4 

9.8

Date

Apr. 4 

May 1 

June 7 

July 5 

Aug. 7 

Sept. 9

Second-feet

10.4 

16.0 

0 

66.8 

46.6 

27.2

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7

e

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

37 

36 

36 

36 

36

31 

24 

21 

22

21

19 

a!7 

a!7 

a!6 

a!5

15 

16 

a!6 

a!6

a!7

alS 

a!4 

13 

12 

12

a!2 

al2 

a!2 

a!2 

12 

b!2

Nov.

a!2 

a!3 

a!3 

a!3 

a!4

a!4 

a!5 

16 

14 

a!2

alo 

alO 

alO 

10 

*13

b!4 

b!4 

b!3 

b!2 

bll

blO 

bio 

blO 

10 

10

10 

10 

10 

9.8 

b9.8

Dec.

bll 

bll 

bll 

blO 

b9.2

8.6 

9.2 

b9.2 

9.2 

9.2

b9.2 

b9.0 

b8.6 

b8.3 

b8.2

b8.4 

b8.4 

*8.6 

8.6 

8.3

8.6 

b8.8 

b9.0 

b8.6 

b8.4.

b8.4 

b8.6 

b8.6 

b8.8 

b8.8 

tf8.8

Jan.

8.3 

8.3 

7.7 

b6.7 

b6.8

b7.0 

b7.3 

7.3 

7.3 

7.2

6.8 

7.0 

7.0 

7.0 

7.0

7.0 

7.2 

7.2 

*7.2 

7.2

7.0 

7.0 

7.2 

7.4 

7.6

7.4 

7.2 

7.6 

7.8 

7.6 

7.4

Feb.

7.4 

7.4 

7.8 

8.2 

S.4

8.8 

9.0 

8.4 

8.8 

9.0

9.0 

9.2 

9.4 

9.6 

10

10 

*10 

10 

10 

10

9.8 

9.6 

9.2 

9.2 

9.2

9.0 

8.8 

8.6

Month

Goto 

Hove 

Deoe

Ca

Janu 

PebiMarc 

Apr!

June 

July 

Augu 

Sept

Wa

nber. ...................................

lendar year 19 49 .......................

1.......................................

ter year 1943-50 .......................

Mar.

8.5 

8.5 

8.5 

8.5 

8.4

8.2 

8.0 

8.0 

7.8 

7.4

7.0 

6.6 

6.6 

6.8 

7.0

6.8 

6.6 

6.6 

6.6

7.0

7.0 

7.0 

7.0 

*6.8 

7.0

7.0 

7.0 

7.0 

7.0 

7.0 

7.4

Apr. '

7.8 

8.2 

8.8 

*9.5 

b9.8

10 

13 

33 

35 

25

24 

24 

32 

34 

24

17 

18 

24 

20 

22

40 

49 

50 

37 

29

21 

21 

29 

29

18

Secondfoot-days

602 

352.6 

278.6

23,597.0

225.7 

253.8 

226.6 

722.1 

2,052 

9,863 

2,161 

496 

366

17,599.4

Peak discharge (base, 450 sec. -ft.). June 7 (9 p.m.)

May

20 

26 

34 

36

18

16 

16 

16

15

14

24 

36 

38 

48 

60

64 

78 

93 

74 

81

102 

145 

165 

160 

129

110 

92 

86 

78 

74 

104

Maximum

37 

16 

11

589

S.3 

10 

8.5 

50 

165 

546 

162 

24 

20

546

574 sec. -ft

June

143 

194 

194 

155 

191

345 

430 

390 

335 

400

475 

505 

490 

475 

470

500 

546 

445 

385 

335

315 

295 

258 

262 

280

a250 

a230 

a210 

a!90

a!70

July

a!62 

150 

143 

139 

127

112 

108 

102 

88 

76

76 

71 

67 

63 

55

49 

49 

58 

47 

44

44 

46 

42 

40 

38

32 

28 

28 

28 

25 

24

Minimum

12 

9.8 

8.2

7.6

6.7 

7.4 

6.6 

7.8 

14 

143 

24 

13 

10

6.6

Aug.

24 

23 

23 

21 

20

20 

19 

17 

16 

16

16 

16 

15

14 

14

14 

14 

14 

13 

14

14 

14 

14 

14

14

14

14 

14 

14 

14 

13

Mean

19.4 

11.8 

8.99

64.6

7.28 

9.06 

7.31 

24.1 

66.2 

329 

69.7 

16.0 

12.2

48.2

Sept.

12 

12 

12 

12 

12

12 

12

13 

13 

13

14 

14 

14 

12 

11

11 

12 

12

12 

14

20 

12 

10 

11 

11

11 

11 

10

10

11

Runoff In 

acre -feet

1,190 

699 

553

46,800

448 

503 

449 

1,430 

4,070 

19,560 

4,290 

984 

726

34,900

; June 11 (10 p.m.) 673 sec. -ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of recorded range in stage, weather records, 

and records for stations on nearby streams.

b Stage-discharge relation affected by ice.

Mote. No gage-height record Jan. 8 to Apr. 3 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 3 discharge measurements, weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GUMJISON RIVER 83

Tenmile Creek at Frisco, Colo.

Location. Water-stage recorder, lat. 39°34'30", long. 106°06'35", in sec. 34, T. 5 S., 

H. YH W., 100 feet upstream from bridge on U. 3. Highway 6, 200 feet upstream from North 

Pork, and half a mile west of Frisco. Datum of gage is 9,099.32 feet above mean sea 

level, unadjusted.

Drainage area. 79 square miles.

Records available.--July 1942 to September 1950 (discontinued).

Extremes.--Maximum discharge recorded during year, 1,260 second-feet June 6 (gage height, 

3.4U feet); from rating curve extended above 800 second-feet; minimum daily, 14 secondfeet Nov. 8, Feb. 3-12.

1942-50: Maximum discharge recorded, that of June 6, 1950; maximum gage height, 3.43 

May 20, 1948; minimum daily, 8.1 second-feet Jan. 4, 1945.

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

Flow partly regulated by Robinson Reservoir (capacity, 2,520 acre-feet). Diversions 

above station for irrigation are of little significance.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

38 

35 

33 

31 

30

29 

 27 

27 

32 

31

33 

34 

32 

32 

30

29 

33 

34 

34 

28

26 

b25 

b25 

34 

25

25 

24 

24 

24 

24 

b21

Nov.

b22 

22 

20 

20 

18

16 

16 

14 

15 

21

21 

21 

22 

22 

*23

24 

21 

22 

23 

23

23 

24 

24 

23 

23

22 

23 

23 

22 

23

Dec.

24 

24 

24 

24 

24

23 

22 

23 

23 

23

22 

21 

*21 

21 

20

21 

21 

21 

21 

21

20 

21 

21 

21 

20

20 

21 

21 

21 

21 

21

Jan.

20 

19 

18 

16

16

17 

17 

17 

17 

17

16 

17 

17 

17 

17

17 

17 

17 

*17 

16

16 

16 

17 

17 

16

16 

17 

17 

17 

17 

16

Feb.

16 

15 

14 

14 

14

14 

14 

14

14 

14

14 

14 

15 

15 

*16

17 

17 

17 

16 

17

17 

17 

17 

17 

17

17 

17 

17

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May. 

June 

July 

Augu 

Sept

wa

Lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 600 sec. -ft.). May

Mar.

18 

18 

18 

18 

18

18 

18 

18 

18 

19

19 

19 

19 

19

19

20 

20 

20 

20 

20

20 

20 

*20 

20 

21

21 

20 

20 

20 

20 

20

Apr.

20 

21 

21 

21 

*21

17 

20 

24 

26 

25

25 

25 

25 

29 

41

37 

34 

35 

36 

38

46 

62 

72 

70 

47

54 

46 

48 

56 

51

Secondfoot-days

909 

638 

672

40,263

524 

437 

598 

1,O93 

7,939 

17,363 

3,455 

1,166 

851

35,645

May

49 

68 

108 

141 

103

86 

74 

76 

83 

101

147 

185 

198 

230 

280

265 

359 

359 

270 

308

395 

530 

579 

616 

460

313 

265 

240 

240 

302 

509

Maximum

38. 

24 

24

872

20 

17 

23 

72 

616 

880 

230 

51 

38

880

June

640 

736 

664 

551 

680

880 

880 

680 

608 

712

816 

880 

835 

805 

790

775 

752 

579 

502 

46O

428 

389 

359 

347 

318

302 

280 

250 

235 

230

July

230 

203 

182 

164 

154

147 

147 

150 

141 

138

129 

118 

108 

108 

101

94 

96 

126 

103 

86

81 

79

72 

70 

68

65 

64 

64 

59 

56 

52

Minimum

21 

14 

20

10

16 " 

14 

18 

17 

49 

230 

52 

26 

24

14

Aug.

49 

48 

49 

51

46

48 

47 

43 

41 

41

47 

47 

42 

40 

38

37 

34 

32 

31 

30

30 

29 

28 

28 

31

33 

32 

30 

30 

28 

26

Mean

29.3 

21.3 

21.7

110

16.9 

15.6 

19.3 

36.4 

256 

579 

111 

37.6 

28.4

97.7

Sept.

26 

26 

24 

24 

24

24 

25 

24 

28 

31

31 

37 

38 

34 

32

29 

28 

24 

29 

36

31 

30 

28 

30 

30

28 

26 

26 

24 

24

Runoff in 

acre -feet

1,800 

1,270 

1,330

79,860

1,040 

867 

1,190 

2,170 

15,750 

34,440 

6,850 

2,310 

1,690

70,710

23 (9 p.m.) 760 see. -ft.; June 2 (9 p.m.) 920 sec. -ft.;

June 6 (8 p.m.J 1,260 sec.-ft.; June 11 (9 p.m.) 1,120 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 18 to Apr. 4 (stage-discharge relation affected by ice during 

most of period), June 12-16; discharge computed on basis of 4 discharge measurements, weather records, 

and records for nearby stations.
84 TRIBUTARIES ABOVE GUNNISON RIVER

Tenmile Creek at Dillon, Colo.

Location.--Water-stage recorder, lat. 390 36'45", long. 106°03'15", In sec. 18,T. 5 S., R. 77 

W., at Dillon, 250 feet downstream from bridge on U. S. Highway 6 and 600 feet upstream 

from mouth. Datum of gage Is 8,817.97 feet above mean sea level, unadjusted.

Drainage area. 113 square miles.

Hecords available. October 1910 to September 1919, April 1930 to September 1950.

Average discharge.--30 years (1910-19, 1929-50), 123 second-feet.

Jjxtremes.--Maximum discharge during year, 1,180 second-feet June'11 (gage height, 4.48 

reet}; minimum daily, 15 second-feet Feb. 3-7, 10, 11.

1910-19, 1930-50: Maximum discharge, 2,010 second-feet June 1, 1933 (gage height, 

5.82 feet,, site and datum then in use), from rating curve extended above 1,000 secondfeet; minimum daily, 2 second-feet Feb. 15-17, 20, 1918.

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

which are fair. Flow partly regulated by Robinson Reservoir (capacity, 2,520 acrefeet). Diversions above station for irrigation are of little significance.

Rating tables, water year 1949-50, except periods of ice effect 

(gage height, in feet, and discharge, In second-feet)

Oct. 1 to Mar. 31 Apr. 1 to Sept. 3O

1.8 15 1.9 19 2.8 ISO 

1.9 22 2.0 26 3.0 245 

2.0 31 2.1 36 3.3 390 

2.1 42 2.2 48 4.2 98O 

2.2 56 2.4 82

Discharge, in second- feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

52 

49 

46 

45 

42

41 

40 

39 

48 

45

42 

42 

48 

48 

45

41 

46 

55 

52 

46

40 

40 

42 

42 

40

39 

39 

39 

40 

40 

33

Nov.

36 

36 

32 

34 

32

32 

31 

32 

36 

35

33 

33 

33

36 

*34

32 

32 

31 

32 

32

32 

34 

34 

33 

32

30 

29 

31 

3O 

30

Dec.

31 

31 

31 

31 

32

29 

27 

30 

28 

28

27 

26 

25 

*24 

22

23 

24 

24 

25 

24

23 

23 

24 

23 

23

23 

23 

24 

24 

24 

24

Jan.

23 

22 

20 

18 

18

L8 

19 

19 

19 

19

18 

19 

19 

19 

19

19 

19 

19 

*19 

18

18 

18 

18 

18 

19

18 

18 

19 

19 

19 

18

Feb.

17 

16 

15 

15 

15

15 

15 

16 

16 

15

15 

*16 

16 

16 

17

18 

19 

19 

18 

19

2O 

20 

20 

20 

20

20 

20 

2O

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

nber. ...................................

lendar year 1949 

ary

ter year 1949-5O .......................

Peak discharge (base, 7OO sec. -ft.). May

ft.j June 6 (lO p.m.; 1,170 sec.-rt.j June 1

Mar.

21 

21 

21 

21 

21

21 

21 

21 

22 

22

22 

22 

21 

22 

23

23 

23 

23 

23 

23

23 

24 

*24 

24 

24

24 

23 

23 

23 

23 

23

Apr.

23 

24 

24 

25 

*26

24 

28 

35 

38 

34

31 

34 

43 

56 

59

53 

51 

54 

51 

54

75

no

125 

120 

87

80 

77 

80 

91 

73

Secondfoot-days

1,346 

979 

800

48,7O1

585 

488 

695 

1,685 

8,813 

20,219 

5,188 

1,529 

1,O67

43,394

S3 (11 P.m.) 

1 (9:30 p.m.

May

75 

1OO 

155 

186 

148

122 

105 

105 

112 

128

170 

214 

220 

263 

305

29O 

402 

414 

3OO 

330

432

575 

627 

653 

492

335 

286 

254 

245 

290 

480

Maximum

55 

36 

32

973

23 

20 

24 

125 

653 

952 

325 

73 

48

952

June

640 

738 

770 

556 

66O

931 

952 

770 

712 

805

91O 

924 

903 

882 

875

875 

868 

764 

666 

608

582 

523 

486 

486 

456

426 

396 

375 

35O 

330

July

325 

3OO 

276 

254 

242

231 

224 

224 

21O 

204

201 

180 

168 

162 

155

148 

145 

175 

152 

135

125 

120 

110 

103 

98

94 

91 

94 

87 

80 

75

Minimum

33

29 

22

12

18 

15 

21 

23 

75 

330 

75 

31 

29

15

Aug.

73 

68 

69 

71 

64

68 

68 

61 

56 

54

59 

61 

56 

51 

48

47 

42 

41 

38 

38

38 

36 

34 

35 

37

4O 

40 

36 

36 

33 

31

Mean

43.4 

32.6 

25.8

133

18.9 

17.4 

22.4 

56.2 

284 

674 

167 

49.3 

35.6

119

791 sec. -ft.; June 3 (l:3O a.m.) 

1.18O sec. -ft.

Sept.

31 

31 

30 

29 

29

29 

29 

30 

33 

36

36 

48 

48 

44 

41

38 

36 

33 

35 

46

42 

38 

36 

38 

37

35 

34 

33 

32 

30

Runoff in 

acre-feet

2,670 

1,940 

1,590

96,610

1,160 

968 

1,380 

3,340 

17,480 

40,100 

10,290 

3,030 

2,120

86,070

966 sec.-

* Winter discharge measurement made on this day.

Note . Stage-discharge relation affected by ice Nov. 22-24, Dec. 1-11, 14-31, Jan. 1-5, 19-27. No 

gage-height record Dec. 12, 13, Jan. 6-18, Jan. 28 to Apr. 3 (stage-discharge relation affected by 

ice during most of periods); discharge computed on basis of 2 discharge measurements, weather records, 

and records for stations on nearby streams.
TRIBUTARIES ABOVE GDNNISON RIVER 85

Straight Creek near Dillon, Colo.

Location. Water-stage recorder, lat. 390 38'55M , long. 106°01 I 05M , In NVf£ see. 4, T. 5 S., 

frr~77 W., 1,000 feet upstream from Laskey Creek and 3j miles northeast of Dillon. Datum 

of gage is 9,386.17 feet above mean sea level, unadjusted.

Drainage area. 12.8 square miles.

Records available. September 1943 to September 1950 (no winter records 1943-46).

Extremes. Maximum discharge during year, 167 second-feet June 17, from rating curve extended above 90 second-feet; maximum gage height, 2.40 feet June 11; minimum discharge 

not determined.

1943-50: Maximum discharge, that of June 17, 1950; ma-rimim gage height, 2.71 feet 

July 6, 1949 (site and datum then in use); minimum discharge not determined.

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

wnich are poor. No diversion abovS station.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

8.8 

8.0 

7.2 

7.2 

6.8

6.8 

6.4 

6.4 

8.4 

7.6

07.6 

bS.O 

8.0 

7.6 

7.6

»7.6 

7.6 

7.6 

7.6 

8.8

b7.6 

b6.0 

b6.0 

b6.0 

bg.O

bS.O 

b6.0 

b6.0 

6.0 

b6.0 

b6.0

Nov.

be.o

b6. 4 

b6. 4 

b6. 4 

b6.6

b6. 6 

b6.6 

b7.4 

b7.0 

6.4

6.4 

b6.4 

*b6.4 

b6.4 

6.4

b6.8 

b6. 8 

6.4 

6.8 

b6.2

b5.6 

b5.0 

bS.O 

5.0 

5.0

4.8 

4.6 

4.6 

4.6 

4.6

Dec.

3.5

Jan.

3.0

Feb.

2.5

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

I. ......................................

ter year 1949-50 .......................

Mar.

2.5

Apr.

3.0

Secondfoot -day 8

219.2 

179.6 

108.5

5,111.5.

93.0 

70.0 

77.5 

90.0 

395.3 

2,061 

756 

315.8 

202.4

4,568.3

May

4.5 

5.5 

7.0 

7.5 

»6.5

4.0 

3.7 

3.7 

3.5 

3.5

5.7 

7.2 

8.4 

11 

11

9.6

13 

13 

12 

15

22 

26 

33 

30 

22

20 

15 

14 

14 

17 

27

MaxlHun

8.8 

7.4

100

33 

130 

44 

15 

8.8

130

June

35 

41 

38 

34 

41

57 

66 

57 

52 

71

100 

104 

100 

104 

110

118 

130 

102 

83 

78

71 

60 

55 

54 

53

53 

50 

49 

49 

46

July

44

41 

38 

36 

32

27 

25 

23 

22 

22

23 

24 

23 

22 

22

22 

22 

22 

22 

22

22 

22 

22 

22 

22

20 

20 

19 

19 

18 

16

MlnlHun

6.0 

4.6

-

3.5 

34 

16 

6.0 

5.7

-

Aug.

15 

14 

15 

14 

14

14 

12 

12 

12 

12

12 

12 

12 

11 

10

9.6 

9.2

8.S 

8.0 

7.6

7.6 

7.£ 

7.2 

7.2 

8.0

8.8 

7.6 

7.6 

7.6 

6.4 

6.0

Mean

7.07 

5.99 

3.5

14.0

3.0 

2.5 

2.5 

3.0 

12.8 

68.7 

24.4 

10.2 

6.75

12.5

Sept.

6.0 

6.0 

5.7 

5.7 

5.7

6.0 

6.0 

8.0 

8.8 

7.2

7.2 

8.8 

8.0 

7.2 

6.8

6.4 

6.0 

5.7 

7.2 

8.4

7.2 

6.8 

6.4 

6.4 

6.4

6.4 

6.4

e.s

6.4 

6.4

Runoff in 

acre-feet

435 

356 

215

10,140

184 

139 

154 

179 

784 

4,090 

1,500 

626 

401

9,060

Peak discharge (base, 120 see.-ft.). June 11 (5:30 p.m.) 152 sec.-ft.; June 17 (5 p.m.) 167 sec.-

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record NOT. 24 to Hay 8 (stage-discharge relation affected by Ice during most 

of period), July 8-12; discharge computed on basis of 1 discharge measurement, weather records, and 

records for stations on nearby streams.
86 TRIBUTARIES ABOVE GUNNISON RIVER

Willow Creek near Dillon, Colo. . '

Location.--Water-stage recorder, lat. 39°39'00", long. 106°04'45", in NW£ sec. 1, T. 5 S., 

K. YB W., at bridge on State Highway 9, 700 feet upstream from mouth and 3 miles northwest of Dillon. Datum of gage is 8,691.59 feet above mean sea level, unadjusted.

Drainage area. 13.5 square miles.

Records available. July 1942 to September 1950.

Extremes.--Maximum discharge during year, 166 second-feet June 16 (gage height, 2.28 feet), 

from rating curve extended above 80 second-feet; minimum daily, 0.7 second-foot Sept. 3.

1942-50:' Maximum discharge, that of June 16, 1950; maximum gage height, 2.32 feet 

June 20, 1947; minimum daily discharge, 0.4 second-foot July 29-31, Aug. 1, 6, 1942, 

Sept. 26, 28, 29, Oct. 4, 7, 1948.

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

wmcn are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 195O

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

Oct.

9.0 

8.8 

8.8 

9.0 

9.3

9.0 

8.8 

8.8 

10 

9.3

9.6 

9.6 

9.6 

9.6 

9.3

9.0 

10 

10 

9.3 

8.2

9.3 

9.6 

8.8 

7.9 

8.2

7.9 

7.7 

7.4 

7.1 

b7.0 

6.7

7.0 

7.0 

6.8 

6.8 

6.8

6.6 

6.5 

6.5 

6.4 

6.3

6.1 

6.2 

6.2 

6.2 

*b6.3

b6. 4 

b6.5 

6.6 

6.6 

6.6

6.3 

6.3 

6.3 

6.1 

6.0

6.2 

6.4 

6.5 

6.4 

5.7

5.0 

5.0 

4.9 

4.7 

4.4

4.6 

5.0 

4.9 

5.0 

5.2

5.0 

4.6 

4.0 

3.5 

3.2

3.5 

3.5 

*3.7 

3.9 

3.8

3.7 

3.6 

3.7 

3.7 

3.6

3.5 

3.5 

3.7 

3.8 

3.9 

3.8

3.8 

3.5 

3.3 

3.3 

3.3

3.4 

3.6 

3.6 

3.6 

3.6

3.4 

3.5 

3.5 

3.5 

3.5

3.6 

*3.6 

3.7 

3.7 

3.6

3.5 

3.5 

3.5 

3.7 

3.8

3.7 

3.7 

3.8 

3.9 

4.0 

4.0

3.9 

3.8 

3.7 

3.7 

3.7

3.8 

.1 

.1 

.0 

.8

.0 

.0 

.O 

.2 

*4.2

4.3 

4.2

4.1 

4.0 

4.1

4.1 

4.1 

4.1 

4.0 

4.1

4.1. 

4.1 

4.1

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

4.1 

4.1 

4.2 

4.3 

4.3

4.2 

4.1 

4.2 

4.3 

4.3

4.2 

4.1 

4.1 

4.2 

4.3

4.3 

4.3 

4.3 

4.2

4.1

4.1 

*4.2 

4.4 

4.4 

4.3

4.2 

4.2 

4.2 

4.1 

4.1 

4.2

Apr.

4.4 

4.7 

4.9 

5.2 

*5.5

6.0 

7.1 

8.8 

8.2 

7.1

7.9 

8.5 

9.0

10 

1O

9.6 

9.9

1O 

10

11

14 

20 

20 

16 

14

13

12 

12 

12 

12

Secondfoot -days

272.6 

192.6 

127.9

6,O48.1

111.7 

112.4 

130.6 

302.8 

855 

2,715 

778.5 

91.3 

175.7

5,866.1

Peak discharge (base, 10O sec. -ft.). June 6 (8 p.m.)

May

13 

14 

21 

22 

18

14 

13 

13 

13 

14

17 

22 

25 

26 

31

32 

42 

47 

38

30

34 

47 

54 

53 

40

32 

26 

23 

21 

25 

35

Maximum

1O 

7.0 

5.2

123

4.0 

4.3 

4.4 

20 

54 

130 

62 

6.6 

11

130

111 sec. -ft

June

48 

62 

7O 

57 

64

93 

100 

88 

77 

85

97 

106 

107 

104 

98

107 

130 

111 

106 

1OO

104 

100 

93 

1OO 

97

90 

93 

88 

74 

66

July

62 

53 

50 

49 

46

41 

41 

40 

36 

33

32 

30 

28 

26 

22

2O 

18

17 

15 

14

13 

12 

12 

11 

10

9.9 

8.8 

8.2 

8.5 

7.9 

4.2

Minimum

6.7 

5.7 

3.2

-

3.3 

3.7 

4.1 

4.4 

13 

48 

4.2 

.9 

.7

.7

; June 16

Aug.

1.9 

1.7 

1.9 

1.7 

1.7

1.9 

1.5 

1.5 

3.2 

6.6

6.O 

5.5 

5.0 

5.0 

4.8

4.5 

4.2 

4.2 

4.8 

4.8

2.8 

.9

1.0 

1.7 

1.9

2.4 

1.9 

1.7 

2.0 

1.5 

1.1

Mean

8.79 

6.42 

4.13

16.6

3.60 

4.01 

4.21 

10.1 

27.6 

90.5 

25.1 

2.95 

5.86

16.1

Sept.

0.9 

.8 

.7 

2.8 

5.2

5.0 

6.6 

6.8 

8.2 

7.9

8.8 

11 

10 

9.6 

9.6

9.9 

9.9 

7.7 

5.8 

7.4

5.5 

5.0 

4.8 

4.8 

4.2

4.0 

3.5 

3.5 

3.0 

2.8

Runoff in 

acre -feet

541 

382 

254

12,010

222 

223 

259 

601 

1,7OO 

5,390 

1,540 

181 

348

11,640

(12 p.m.) 166 sec. -ft.

Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Oct. 31 to Nov. 14, Nov. 18 to Apr. 4 (stage-discharge relation 

affected by ice during most of periods), Apr. 25-30; discharge computed on basis of 4 discharge 

measurements, weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISON RIVER 87

Rook Creek near Dillon, Colo.

Location.--Water-stage recorder, lat. 39°43'25", long. 106°07'40", in NE-f sec. 9, T. 4 S., 

H. VB W., 500 feet upstream from bridge on State Highway 9, a quarter of a mile upstream 

from mouth, and 9 miles northwest of Dillon. Prior to Sept. 13, 1950,at site 500 feet 

downstream, at different datum.

Drainage area. 15.8 square miles.

Records available. July 1942 to September 1950.

Extremes. Maximum discharge during year, 172 second-feet June 16 (gage height, 2.41 feet, 

site and datum then in use), from rating curve extended above 130 second-feet; minimum 

not determined, occurred during period of no gage-height record.

1942-50: Maximum discharge, 236 second-feet June 20, 1947, from rating curve extended above 160 second-feet; maximum gage height, 2.44 feet June 17, 1949, site and 

datum then in use; minimum daily discharge determined, 2.2 second-feet Apr. 13, 17, 

1945.

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

A few small diversions above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

14 

13 

12 

11 

10

10 

9.7 

9.7 

11 

10

12

11 

11 

11 

10

no

1011 11

10

10 

12 

12 

10 

10

9.7 

9.7 

9.3 

8.2 

8.6 

7.8

Nov.

(*) 

7.0

Dec.

3.5

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

MAV

June 

July 

Augu 

Sept

Wa

Jan.

4,5 

(*)

Feb.

(*) 

4.5

lendar year 1949

ter year 1949-5O .......................

Mar.

4.O

Apr.'

(*) 

10

Secondfoot-days

324.7 

210.0 

1O8. 5

9,613.2

139.5 

126.0 

124.0 

3OO 

1,399 

3,197 

1,552 

362.2 

292.0

8,134.9

May

13 

15 

26 

28 

*24

20 

15 

15 

15

17

25 

33 

34 

38 

47

47 

66 

69 

60 

60

74 

90 

103 

103 

75

53 

40 

34 

33 

47 

80

Maximum

14

153

103 

134 

82 

19 

19

134

June

100 

110 

102 

66 

91

125 

121 

100 

87 

103

125 

128 

127 

127 

125

130 

134 

128 

114 

109

105 

105 

96 

103 

100

92 

91 

87 

83 

83

Minimum

July

7.8

-

13 

66 

20 

7.2 

6.O

-

80 

71 

70 

70 

70

61 

64 

76 

82 

78

82 

75 

64 

54 

49

46 

43 

43 

40 

37

36 

36 

31 

28 

26

24 

22 

25 

26 

23 

20

Aug.

19 

17 

16 

16 

16

14 

13 

12 

12 

12

14 

13 

12 

11 

10

10 

10 

9.0 

10 

11

9 2 

8 0 

8 0 

9 6 

9 8

11 

12 

11 

11 

8.4 

7.2

Mean

10.5 

7.0 

3.5

26.3

4.5 

4.5 

4.0 

10 

45.1 

107 

50.1 

11.7 

9.73

22.3

Sept.

7.0 

7.0 

7.0 

6.6 

6.6

6.3 

6.C 

6.6 

8.0 

12

11 

12 

14 

13 

11

9.8 

8.9 

8.9

13 

19

15 

13

11 

11 

10

8.9 

8.0 

7.6 

7.1 

6.7

Runoff In 

acre-feet

644 

417 

215

19.O6O

277 

25O 

246 

595 

2,770 

6,340 

3,080 

718 

579

16,130

Peak discharge (base, 160 sec.-ft..). June 16 (1O:3O p.m.) 172 sec.-ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 31 to May 2 (stage-discharge relation affected by Ice during 

part of period), Aug. 19 to Sept. 12; discharge computed on basis of 6 discharge measurements, 

weather records, and records for stations on nearby streams.

207364 O - 52 - 7
88 TRIBUTARIES ABOVE GDNNISON RIVER

Boulder Creek near Dillon, Colo.

Location. Water-stage recorder, lat. 39°44'15", long. 106°08«05", in NW£ sec. 4, T. 4 S., 

K. 78 W., at bridge on State Highway 9, 500 feet upstream from mouth and 10 miles northwest of Dillon. Datum of gage is 8,456.79 feet above mean sea level, unadjusted.

Drainage area. 9.7 square miles.

Records available. July 1942 tp September 1950.

Extremes. Maximum discharge during year, 118 second-feet June 17 (gage height, 3.23 feet), 

rrom rating curve extended above 65 second-feet; minimum daily, 0.4 second-foot Sept. 

30.

1942-50: Maximum discharge, 255 second-feet June 21, 1943, from rating curve extended above 130 second-feet; maximum gage height, 3.23 feet June 17, 1950; no flow 

at times.

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

which are poor. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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.

4.9 

4.8 

4.5 

4.4 

4.3

4.0 

3.8 

3.8 

3.9 

3.9

4.3 

4.5 

4.4 

4.4 

4.3

*4.0 

4.0 

4.3 

4.4 

3.9

3.9 

4.5 

3.9 

3.8 

3.7

3.5 

3.4 

3.5 

3.4 

4.0 

3.2

Nov.

2.2 

(*)

Dec.

1.8 

(*)

Jan.

1.6 

(*)

Feb.

1.3 

(*)

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

Iteir

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-50 ...............

Mar.

1.5 

(*)

Apr.

1.6 

1.8 

2.2 

2.0 

1.8

*2.0 

2.4 

2.7 

2.9 

2.2

2.2 

2.0 

2.7 

3.0 

3.0

2.5 

2.5 

2.9 

3.0 

3.2

5.5 

6.8 

7.4 

6.8 

4.5

4.8 

4.2 

4.2 

3.7 

3.7

Secondfoot-days

125.6 

66.0 

55.8

5,743.2

49.6 

36.4 

46.5 

100.2 

543.2 

2,106 

848.9 

70.9 

39.0

4,088.1

Peak discharge (base, 100 sec. -ft.). June 17 (12:30 a

Nay

3.7

6.1 

11 

14 

11

10 

7.1 

7.1 

6.1 

6.1

8.0 

13 

15 

15 

18

19 

22 

26 

19 

19

22 

32

41 

40 

30

20 

19 

19 

18 

18 

28

Maximum

4.9

125

7.4 

41 

102 

58 

6.1 

2.7

102

.m. ) 118 see

June

46 

57 

57 

32 

38

70 

81 

70 

58

71

87 

92 

94 

95 

95

95 

102 

91 

77 

73

63 

62 

59 

70 

70

62 

61 

61 

57 

60

July

58 

50 

51 

47 

46

43 

42 

41 

41 

36

40 

37 

31 

25 

22

20 

19 

19

19 

19

18 

18 

18 

16 

15

12 

9.5 

10 

10 

9.0 

7.4

Minimum

3.2

-

1.6 

3.7 

32 

7.4 

1.2 

.4

.4

.-ft.

Aug.

6.1 

5.S 

5.3 

4.8 

4.2

3.7 

3.0 

2.2 

2.0 

1.8

2.0 

2.0 

1.8 

1.7 

1.7

1.5 

1.4 

1.4 

1.4 

1.4

1.4 

1.2 

1.2 

1.2 

1.3

1.4 

1.7 

1.8 

1.7 

1.4 

1.4

Mean

 1.05 

2.2 

1.8

15.7

1.6 

1.3 

1.5 

3.34 

17.5 

70.2 

27.4 

2.29 

1.30

11.2

Sept.

1.3 

1.3 

1.3 

1.3 

1.2

1.2 

1.2 

1.1 

1.2 

1.2

1.2 

2.0 

2.0 

1.5 

1.4

1.2 

1.2

1.1 

1.4 

2.7

2.2

1.8 

1.4 

1.4 

1.2

.9 

.6 

.6 

.5 

.4

Runoff In 

acre-feet

249 

131 

111

11,380

f 98 

72 

92 

199 

1,080 

4,180 

1,680 

141 

77

8,110

Winter discharge "measurement made on this day. 

Note. Stage-discharge relation affected by Ice Oct. 31 to Dec. 7, Apr. 25. No gage-height 

record Dec. 8 to Apr. 5 (stage-discharge relation affected by Ice during most of period); discharge 

computed on basis of 4 discharge measurements, weather records, and records for stations on nearby 

streams.
TRIBUTARIES ABOVE GUNNISON RIVER 89

Slate Creek near Dlllon, Colo.

Location. Water-stage recorder, lat. 39°46'55", long. 1060 09'45n , In KEv sec. 19, T. 3 S., 

RT~7B W., a quarter of a mile upstream from State Highway 9, 2,000 feet upstream from 

mouth, and 13 miles northwest of Dlllon. Datum of gage Is 8,227.70 feet above mean sea 

level, unadjusted.

Drainage area. 16.8 square miles.

Records available. July 1942 to September 1950.

Extremes . Maximum discharge during year, 142 second-feet June 12 (gage height, 2.01 feet); 

minimum dally, 0.1 second-foot Sept. 30.

1942-50: Maximum discharge, 288 second-feet May 22, 1945 (gage height, 2.66 feet), 

from rating curve" extended above 130 second-feet; minimum dally, that of Sept. 30, 1950.

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

wnich are poor. Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9.2 

8.2 

6.8 

6.8 

6.8

6.8 

6.5 

5.9 

6.2 

5.9

6.Z 

6.5 

6.5 

6.8 

 6.5

6.5 

6.8 

7.3 

7.3 

6.8

6.Z 

5.9 

5.6 

5.Z 

4.9

4.9 

4.6 

4.3 

4.3 

4.6 

1)4.0

Nov.

M.I 

4.3 

4.0 

4.O 

3.7

4.0 

4.3 

4.3 

3.5 3.5

3.7 

4.0 

*6.5 

5.2 

3.3

4.3 

4.9 

5.2 

5.Z 

D4.2

b3.6 

4.3 

4.0 

3.7 

4.3

3.1 

3.1 

3.5 

Z.6 

b2.4

Dec.

bZ.8 

1)2.2 

b2.7 

D2.3 

bZ.9

1)3.5 

3.1 

3.5 

3.5 

3.1.

2.9 

Z.7 

Z.S 

2.3 

*2.Z

2.4 

Z.7 

2.5 

3.0 

Z.S

Z.6 

3.0 

2.7 

2.4 

Z.6

Z.3 

3.2 

Z.9 

3.3 

3.5 

3.7

Jan.

3.5 

(«)

Feb.

(«) 

3.0

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

Z.S

(«)

Apr.

3.0 

2.9 

3.8 

4.7 

5.8

*5.2 

6.Z 

8.7 

9.7 

6.5

6.5 

6.Z 

8.7 

11 

11

8.7 

10 

10 

1Z 

15

Zl 

ZZ 

21 

16 

15

13 

13 

14 

1Z 

9.7

Secondfoot -day s

190.8 

1Z0.8 

87.8

6,897. Z

108.5 

84.0 

77.5 

312.3 

887 

1,883 

389.6 

277.5 

177. Z

4,596.0

»y

10 

14 

18 

18 

16

14 

13 

13 

12 

1Z

15 

18 

2O 

ZZ 

.28

30 

36 

43 

37 

34

37 

50 

64 

64 

52

38 

31 

28 

26 

Z7 

47

Maxlmm

9.2 

6.5 

3.7

1Z4

22 

64 

104 

34 

13 

17

104

June

62 

72 

75 

48 

52

82 

90 

70 

46 

56

90 

104 

85 

80 

77

82 

87 

76 

6O 

54

54 

52 

44 

52 

52

41 

37 

36 

33 

34

Mlnlmm

July

4.0 

Z.4 

Z.2

-

2.9 

10 

33 

.2 

.2 

.1

.1

34 

28 

27 

27 

27

26 

24 

24 

23 

24

Z7 

28 

24 

21 

9.7

4.6 

3.3 

Z.2 

1.6 

1.1

.8 

.4

.3

.Z 

.Z

.Z 

.Z 

.2 

.Z 

.Z 

.Z

Aug.

O.Z 

.Z 

.Z 

3.1 

9.2

11 

9.7 

7.8 

9.Z 

11

11 

11 

10 

9.2 

10

11 

11 

11 

11 

10

9.2 

9.2 

8.7 

9.2 

10

13 

13 

11 

10 

9.2 

8.Z

Mean

6.15 

4.03 

2.83

18.9

3.5 

3.0 

Z.S 

10.4 

28. 6 

6Z.8 

1Z.6 

8.95 

5.91

1Z.6

Sept.

7.3 

6.8 

6.8 

6.5 

6.Z

6.Z 

6.Z 

5.9 

6.5 

6.8

8.2 

11 

11 

10 

9.Z

8.7 

8.2 

8.7 

10 

17

5.9 

1.0 

.6 

.5 

.5

.5 

.4

.3

.2 

.1

Runoff In 

acre-feet

378 

Z40 

174

13,690

Z15 

167 

154 

619 

1,760 

3,73O 

773 

550 

351

9,110

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote. Ho gage-height record Dec. 10 to Apr. 5 (stage-discharge relation affected by Ice during 

most of period); discharge computed on basis of 4 discharge measurements, weather records, and records for stations on nearby streams.
90 TRIBUTARIES ABOVE GUNNISON RIVER

Black Creek above Green Mountain Reservoir, Colo.

Location. Water-stage recorder and concrete control, lat. 39C 51'15", long. 106°15'10", in 

 NE£ sec. 29, T. 2 S., R. 79 W., at bridge on State Highway 9, 400 feet upstream from 

high-water line in Green Mountain Reservoir and 16 miles southeast of Kremmllng.

Drainage area. 18.2 square miles.

Records available.--May 1944 to September 1950.

Extremes.--Maximum discharge during year, 218 second-feet June 17 (gage height, 2.12 feet) 

minimum not determined.

1944-50: Maximum discharge, 266 second-feet June 21, 1947 (gage height, 2.46 feet); 

minimum daily, 1.4 second-feet Dec. 15-20, 1944.

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

which are poor. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

?5

26 

27

28 

29 

30 

31

Oct.

16 

14 

12 

11 

9.8

8.2 

7.5 

6.0 

6.0 

8.2

6.5 

7.0 

6.5 

7.0 

*7.5

8.2 

8.2 

9.0 

12 

9.8

7.5 

6.0 

5.5 

5.5 

5.5

4.5 

4.0 

3.5 

3.5 

4.5 

4.0

Nov.

3.7 

3.5 

3.0 

2.5 

2.5

2.5 

2.5 

2.5 

1.8 

2.1

2.1 

2.1 

3.3 

*3.3 

2.5

2.5 

2.5 

3.0 

3.4

3.6

3.0 

3.0 

3.0 

3.0 

3.0

3.0 

3.0 

3.5 

1.8 

2.0

Dec.

2.8 

(*)

Jan.

3.0 

(*)

Feb.

(*) 

4.0

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lender year 1949

h. ......................................

ter year 1949-50 ...............

Mar.

3.5 

(*)

Apr.

3.2 

3.7 

3.0 

2.6 

2.3

*2.1 

1.8 

4.O 

3.5 

3.0

4.5 

4.0 

4.5 

6.5 

-P. 2

9.8 

9.8 

9.8

15 

17

18 

23 

30 

27 

21

14 

12 

15 

14 

11

Secondfoot-days

234.4 

83.2 

86.8

12,348.1

93.0 

112.0 

108.5 

303.3 

1,443 

4,576 

2,329 

475.2 

403.3

10,247.7

Peak discharge (base, 185 see.-ft.l.--June 7 (3 a.m.)

May

10 

13 

16 

26 

28

21 

17 

14 

13 

12

13 

23 

31 

31 

44

51 

70 

97 

63 

55

67 

100 

118 

126 

98

61 

43 

35 

31 

31 

85

Maximum

16 

3.7

215

30 

126 

188 

143 

27 

30

188

June

129 

150 

156 

102 

110

169 

188 

156 

110 

132

167 

187 

182 

180 

182

177 

187 

177 

158 

148

145 

145 

129 

148 

153

143 

143 

140 

140 

143

July

143 

124 

113 

116 

111

106

114 

118 

116 

113

113 

113 

100 

75 

65

57 

49 

47 

49

51

52 

51 

46 

37 

35

34 

31 

38 

43 

40 

29

Aug.

26 

26

27 

25 

21

21 

20 

16 

15 

15

15 

15 

14 

13 

13

13 

13 

13 

13 

12

11 

11 

10 

11 

13

14 

15 

13 

13 

10 

8.2

Minimum Mean

3.5 7.56 

1.8 2.77 

2.8

33.8

3.0 

4.0 

3.5 

1.8 10.1 

10 46.5 

102 153 

29 75.1 

8.2 15.3 

6.0 13.4

28.1

Sept.

8.2 

8.2 

8.2 

8.2 

7.5

7.5 

7.0 

7.5 

11 

14

13

15 

16 

17 

15

13 

11 

12 

14 

30

30 

29 

23

19 

15

13 

9.8 

8.2 

7.0 

6.0

Runoff In 

acre-feet

465. 

165 

172

24,490

184 

222 

215 

602 

2.86O 

9,O80 

4,620 

943 

800

20,330

212 seci-ft.j June 17 (1:30 a.m.) 218 sec.--
TRIBUTARIES ABOVE GUNNISON RIVER 91

Otter Creek above Green Mountain Reservoir, Colo.

Location. Water-stage recorder, lat. 39°51'10", long. 106°16'00", in NW£ sec. 29, T. 2 S., 

K. yy W., at State Highway 9, 1,000 feet upstream from high-water line of Green Mountain 

Reservoir and 16 miles southeast of Kremmling.

Drainage area. 9.4 square miles.

Records available. May 1944 to September 1950.

Extremes. Maximum discharge during year, 47 second-feet June 3; maximum gage height, 1.18 

reet Apr. 7 (ice Jam); minimum not determined, occurred during period of no gage-height 

record.

1944-50: Maximum discharge, 63 second-feet June 17, 1949; maximum gage height, 2.55 

feet Apr. 23, 1948; minimum daily discharge, 0.1 second-foot on many days during December 1944 and January 1945.

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

wnich are poor.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.4 

2.0 

1.8 

1.6 

1.6

1.6 

1.6 

1.6 

1.6 

1.6

1.8 

1.8 

1.8 

1.8 

 1.8

1.8 

1.8 

2.0 

2.0 

1.8

1.6 

1.8 

1.8 

1.6 

1.6

1.6 

1.6 

1.6 

1.6 

1.6 

1.5

Nov.

1.5 

1.3

1.3 

1.3 

1.3

1.2 

1.2 

1.2 

1.2 

1.2

1.2 

1.4 

1.4 

*1.1 

1.2

1.0 

1.0 

1.0 

1.1 

1.1

1.1 

1.1 

1.1 

1.1 

1.1

1.1 

1.1 

1.2 

.7 

.6

Dec.

. 0.6 

(*)

Jan.

0.2 (*)

Feb.

(*)

0.8

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mnv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

0.8 

(*)

Apr.

0.8 

.9 

1.1 

1.0 

.8

*1.9 

1.7 

1.5 

1.3 

.9

.8 

1.6 

3.4 

2.9 

1.6

1.6 

2.9 

2.9 

2.0 

2.0

3.8 

5.6 

5.2 

3.8 

3.8

2.0 

2.0 

3.4 

2.4 

1.8

Secondfoot-days

53.7 

34.4 

18.6

2,275.2

6.2 

22.4 

24.8 

67.4 

274.2 

694 

205.8 

67.7 

42.4

1,511.6

May

2.0 

3.4 

4.7 

5.2 

3.4

2.4 

1.8 

1.6 

1.6 

1.6

1.8 

2.9 

3.4 

5.2 

6.0

7.9 

11 

15 

13 

11

12 

16 

20 

26 

20

14 

11 

10 

9.3 

11 

20

Maximum

2.4 

1.5

55

5.6 

26 

43 

12 

2.9 

2.0

43

June

31 

36 

43 

23 

14

26 

41 

33 

16 

14

22 

33 

31 

26 

23

25 

25 

24 

22 

21

21 

20 

18 

18 

17

15 

14 

14 

14 

14

July

12 

11

11 

11 

12

10 

8.6 

10 

11 

10

8.6 

7.9 

6.5 

5.6 

5.2

5.6 

5.2 

5.2

4.7 

4.7

4.2 

3.8 

3.4 

3.4 

4.2

3.8 

3.8 

4.7 

3.4 

2.9 

2.4

Minimum

1.5 

.6

-

.8 

1.6 

14 

2.4 

1.6 

1.0

-

Aug.

2.0 

2.0 

2.4 

2.4 

2.4

2.4 

2.9 

2.9 

2.4 

2.0

2.9 

2.9 

2.4 

2.4 

2.0

2.0 

2.0 

2.0 

1.8 

1.8

1.8 

1.8 

1.8 

1.6 

2.0

2.9 

2.4 

2.0 

2.0 

1.8 

1.6

Mean

1.73 

1.15 

.6

6.23

.2 

.8 

.8 

2.25 

8.85 

23.1 

6.64 

2.18 

1.41

4.14

Sept.

1.6 

1.4 

1.4

1.2 

1.2

1.0 

1.0 

1.0 

1.4 

1.6

1.4 

2.0 

1.8 

1.8 

1.6

1.6 

1.4 

1.2 

1.4 

2.0

1.8 

1.6 

1.6 

1.6 

1.4

1.4 

1.0 

1.0 

1.0 

1.0

Runoff In 

acre-feet

107 

68 

37

4,520

12 

4* 

49 

134 

544 

1,380 

408 

134 

84

3,000

Peak discharge (base, 30 sec.-ft.).--June 3 (7 a.m.) 47 sec.-ft. ; June 7 (9 a.m.) 44 sec.-ft.; 

June 13 (3 a.mT) 41 sec.-ft.

* Winter discharge measurement made on this day.
92 TRIBUTARIES ABOVE GUNNISON RIVER

Cataract Creek above Green Mountain Reservoir, Colo.

Location. Water-stage recorder, lat. 39°51'00", long. 106°17'25", in NE^ sec. 25, T. 2Z., 

K. BU W., at Lawson Ranch, 1 mile upstream from high-water line of Green Mositain Reservoir and 16 miles southeast of Kremmling.

Drainage area. 15.5 square miles.

Records available. May 1944 to September 1950.

Extremes . Maximum discharge during year, 220 second-feet June 17 (gage height, 2.01 feet), 

rrom rating curve extended above 100 second-feet; minimum not determined.

1944-50: Maximum discharge, 333 second-feet June 8, 1946 (gage height, 2.45 feet), 

from rating curve extended above 140 second-feet; minimum daily, 0.2 second-foot on 

several days during 1944.

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

which are poor. A few small diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

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 

2S 

29 

30 

31

Oct.

4.8 

4.8 

3.9 

3.7 

3.5

4.1 

3.7 

2.4 

2.6 

3.9

3.0 

3.9 

3.9 

4.1 

4.6

4.6 

4.8 

6.1 

5.8 

6.1

5.1 

4.6 

5.1 

4.6 

3.9

3.7 

3.3 

2.8 

3.0 

3.7 

3.3

Nov.

3.3 

2.6 

2.4 

2.4 

2.3

2.3 

2.3 

2.4 

2.4 

2.6

1.8 

2.0 

*2.2 

2.0 

2.0

2.2 

2.0 

1.8 

1.8 

1.7

1.6 

1.4 

1.4 

1.4 

1.4

1.4 

1.2 

1.7 

.6 

.7

Dec.

(») 

1.5

Jan.

1.3 

(»)

Feb.

(») 

1.5

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mev

June 

July 

Augu 

Sept

Ha

lendar year 1949

1.......... .............................

ter year 1949-50 ...............

Mar.

1.8 

(»)

Apr.

1.9 

2.2 

2.1 

2.0 

1.5

3.0 

4.1 

*5.9 

5.9 

6.5

3.8 

3.3 

4.4 

5.9 

7.2

5.6 

5.6 

6.5 

4.4 

6.S

9.3 

12 

14 

13 

12

9.6 

10 

9.6 

9-.0 

7.6

Secondroot-days

127.4 

57.3 

46.5

8,443.8

40.3 

42.0 

55.8 

194.7 

853.8 

3,369 

1,045 

208.5 

138.4

6,178.7

Peak discharge (base, ISO sec. -ft.). June 17 (3 a.m.)

May

7.6 

10 

12 

17 

16

13 

11 

9.6 

9.3 

9.3

11 

14 

16 

22 

23

29 

39 

50 

34 

30

37 

54 

61 

71 

50

40 

32 

28 

24 

24 

50

Maximum

6.1 

3.3

224

14 

71 

187 

69 

13 

9.3

187

June

70 

100 

106 

66 

80

100 

140 

100 

81 

110

135 

158 

160 

166 

166

166 

187 

160 

125 

98

96 

96 

88 

106 

102

92 

82 

81 

78 

74

July

69 

64 

56 

44 

51

47 

48 

47 

47 

45

43 

44 

40 

33 

30

27 

24 

24 

24 

23

22 

22 

22 

20 

17

16 

16 

18 

18 

17 

16

Aug.

13 

12 

11 

11 

11

12 

11 

10 

8.6 

7.2

7.6 

7.6 

7.2 

6.2 

5.9

5.3 

4.4 

4.1 

5.0 

4.7

4.1 

3.5 

3.5 

3.5 

3.8

4.4 

5.0 

4.4 

4.4 

3.8 

3.3

Sept.

2.7 

2.5 

2.5 

2.5 

1.9

1.7 

1.5 

1.4 

1.7 

2.3

2.7 

4.1 

4.1 

4.4 

4.4

5.6 

5.0 

4.1 

5.3 

9.0

9.3 

8.2 

8.6 

S.2 

7.6

6.5 

5.9 

5.3 

5.0 

4.4

Minimum Kean »£*£

2.4 4.11 253 

.6 1.91 114 

1.5 92

23.1 16,750

1.3 SO 

1.5 83 

1.8 111 

1.5 6.49 386 

7.6 27.5 1,690 

66 112 6,680 

16 33.7 2,07O 

3.3 6.73 414 

1.4 4.61 275

16.9 12,250

220 sec. -ft.
TRIBUTARIES ABOVE GDNNISON RIVER 93

Elllott Creek feeder canal to Green Mountain Reservoir, Colo.

Location. Water-stage recorder, lat. 39°52'10", long. 106°20<00", In SE£ sec. 15, T. 2 

s:, H. 80 W., just upstream from high-water line of Green Mountain Reservoir, threequarters of a mile downstream from head gate, and 14 miles southeast of Kremmllng.

Records available. May 1944 to September 1950 (no winter records In 1947).

Extremes. Maximum discharge during year, 206 second-feet June 12 (gage height, 3.13 feet); 

minimum not determined.

1944-50: Maximum discharge, 249 second-feet June 18, 1949 (gage height, 3.73 feet); 

no flow at times during winter months.

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

which are poor. Elliott Creek feeder canal diverts flow of Elllott Creek to Green Mountain Reservoir except during extreme high water. Drainage area of Elllott Creek above 

head gate of canal, 15.4 square miles.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

2.8 

2.6 

2.4 

2.4 

2.4

2.4 

2.4 

2.4 

2.4 

2.4

2.2 

2.2 

2.2 

2.2 

*2.2

2.2 

2.4 

2.6 

2.6 

2.6

2.2 

2.2 

2.3 

2.4 

2.4

2.4 

2.4 

2.4 

2.2 

1.9 

2.1

Nov.

1.3

Dec.

(*) 

0.8

Jan.

0.3 

(*)

Feb.

(*)

0.6

Month

Octo 

Hove 

Deoe

Ca

Janu 

Pebr 

Hare 

Aprl 

Hay.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1.1

1.0 

1.1 

1.2 

1.1

1.2 

1.1

l.o

1.1 

1.2

1.3 

1.1 

1.1 

1.2 

1.5

1.4 

1.6 

1.7 

1.7 

1.6

1.9 

*2.4 

2.2 

2.5 

2.7

2.6 

2.4 

2.3 

2.2 

1.8 

2.0

Apr.

2.2 

2.S 

2.1 

1.8 

1.7

2.2 

2.5 

*2.8 

3.0 

2.1

1.9 

2.1 

2.2 

2.6 

2.4

2.2 

2.6 

2.6 

2.6 

2.6

3.7 

4.5 

4.5 

3.7 

3.9

3.0 

3.7 

4.3 

4.1 

3.9

Secondfoot-days

7 

Z

?.S

9.0 

4.8

6,288.8

9.3 

16.8 

50.3 

85,8 

686.4 

3., 301 

224.6 

97.4 

92.3

4,700.6

May

4.1 

5.1 

5.7 

5.7 

5.7

S.4 

5.4 

S.4 

5.4 

5.7

11 

29 

28 

22 

8.3

8.3 

8.7 

9.5 

12 

18

>0 

31 

38 

51 

66

63 

59 

54 

50 

30 

16

Maximum

2.8

216

2.7 

4.5 

66 

174 

20 

4.5 

3.9

174

June

36 

118 

126 

86 

81

115 

157 

131 

88

loo

147 

174 

171 

160 

155

162 

164 

155 

124 

1O7

106 

1O6 

93 

94 

88

74 

63 

42 

46 

32

July

20 

10 

14 

13 

13

13 

14 

13 

13 

12

9.9 

7.5 

5.4 

4.5 

4.5

4.3 

4.3 

4.5 

4.8 

4.5

4.1 

3.9 

3.2 

3.0 

3.0

3.0 

3.0 

3.2 

3.0 

3.0 

3.0

Minimum

1.9

0

1.0 

1.7 

4.1 

32 

3.0 

2.6 

2.4

-

Aug.

2.8 

3.7 

4.1 

4.1 

4.3

3.9 

3.4 

3.2 

3.2 

3.4

3.7 

3.4 

3.2 

3.2 

3.2

3.0 

3.0 

3.0 

3.0 

2.8

2.8 

2.8 

2.8 

2.6 

2.6

3.0 

2.8 

2.6 

2.6 

2.6 

2.6

Mean

2.35 

1.3 

.8

17.2

.3 

.6 

1.62 

2.86 

22.1 

110 

7.25 

3.14 

3.08

12.9

Sept.

2.6 

2.6 

2.4 

2.4 

2.4

'2.4 

2.4 

2.4 

2.4 

2.6

2.8 

3.2 

3.2 

3.4 

2.8

3.O 

3.2 

3.2 

3.4 

3.9

3.7 

3.4 

3.2 

3.4 

3.4

3.7 

3.7 

3.7 

3.7 

3.7

Runoff In 

acre-feet

145 

77 

49

12,460

18 

33 

100 

170 

1,360 

6,550 

445 

193 

183

9,320

* tfinter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 21-24, Oct. 29 to Nov. 2, Nov. 13 to Dec. 5, 

Apr. 8. No gage-height record Nov. 3-12, Dec. 6 to Apr. 7 (stage-discharge relation affected by Ice 

during most of period); discharge computed on basis of 4 discharge measurements and weather records.
94 TRIBUTARIES ABOVE GUNNISON RIVER

Piney River Below Piney Lake, near Minturn, Colo.

Location.--Water-stage recorder, lat. 39°42'3011 , long. 106°25'35", in wi sec. 14, T. 4 S., 

K. HI W. , l£ miles upstream from Diokson Creek, 1* miles downstream from Piney Lake, 

and 8 miles north of Minturn.

Drainage area. 13.0 square miles*.

Records available. October 1947 to September 1950.

Extremes.--Maximum discharge during year, 284 second-feet June 6 (gage height, 5.12 feet), 

rrom rating curve extended above 190 second-feet; minimum not determined, occurred during period of no gage-height record.

1947-50: Maximum discharge, 291 second-feet June 17, 1949 (gage height, S-.23 feet), 

from rating curve extended above 190 second-feet; 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, 

wnicn are poor. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

7.0 

6.7 

6.7 

5.7 

5.1

4.8 

4.1 

3.6 

3.6 

4.1

4.4 

5.4 

7.0 

8.0 

7.7

7.4 

7.0 

8.0 

9.1 

8.8

7.7 

6.7 

7.0 

6.7 

6.0

5.4 

5.4 

4.8 

5.1 

4.8 

4.6

Nov.

5.1 

5.1

5.4 

5.4 

5.4

5.4 

5.4 

5.1 

*5.1 

4.8

4.5 

4.5 

4.9 

5.0 

5.1

5.0 

4.9

4.7 

4.6 

4.5

4.5 

4.5 

5.0 

5.4 

4.8

4.4 

3.8 

3.8 

3.4 

3.2

Dec.

3.2

Jan.

3.0

Feb.

2.9

Month

Goto 

Nove 

Dace

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

uary

ter year 1949-50 ...............

Mar.

2.7 

(*)

Apr.

10

Secondfoot-days

188.6 

142.7 

99.2

10,369.3

93.0 

81.2 

83.7 

3OO

1,369 

4,135 

917 

136.7 

170.0

7,716.1

May

12 

17 

23 

27 

24

21 

18 

18 

17 

19

22 

29 

33

40 

47

49 

57 

63 

50 

51

70 

102 

105 

95 

72

47 

40 

35 

32 

40 

94

Maximum

9.1

5.4

234

105 

202 

63 

9.1 

13

202

June

152 

162 

140 

82 

130

202 

190 

130 

86 

130

175 

195 

186 

183 

181

186 

188 

172 

150 

140

132 

115 

90

117 

112

95 

86 

82 

74 

72

July

Minimum

3.6 

3.2

-

12 

72 

10 

2.4 

1.7

-

63 

55 

50 

50 

47

47 

47 

50 

52 

50

45 

38 

32 

26 

23

22 

20 

18 

18 

17

16 

16 

15 

14 

13

12 

12 

14 

13 

12 

10

Aug.

9.1 

8.4 

8.0 

8.0 

7.0

7.0

6.4 

5.7 

5.1 

4.4

4.8

5.1 

4.4 

4.1 

3.4

3.3 

3.1 

3.3 

2.7 

2.5

2.5 

2.5 

2.4 

2.4 

2.4

2.9 

3.4 

3.3 

3.3 

3.1 

2.7

Mean

6.08 

4.76 

3.2

28.4

3.0 

2.9 

2.7 

10 

44.2 

138 

29.6 

4.41 

5.67

21.1

Sept.

2.4 

2.2 

2.0 

1.9 

1.8

1.7 

1.7 

1.8 

2.4 

2.9

3.3 

5.1 

6.4 

6.7 

6.7

6.4

6.0 

5.7 

6.7 

13

12 

12 

10 

9.8 

8.8

7.7 

7.0 

5.7

5.4 

4.8

Runoff in 

acre-feet

374 

283 

197

20,560

184 

161 

166 

595 

2,720 

8,200 

1,820 

271 

337

15,310

Peak dlacharge (ba 

ne 17 (2 a.m7) 272

ee, 150 sec.-ft.). June 2 (l a.m.) 210 sec.-ft.; June 6 (3 a.m.) 284 sec.-ft.;

June 17" (2 a.m.) "272 see.-Tt.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 11-24, Nov. 30 to Dec. 8. No gage-height 

record Dec. 9 to May 11 (stage-discharge relation affected by ice during part of period); discharge 

computed on basis of 1 discharge measurement, weather records, and records for nearby stations.
TRIBUTARIES ABOVE GUNNISON RIVER 95

Piney River near State Bridge, Colo.

Location.--Water-stage recorder, lat. 39°48 I , long. 106°35', in sec. 16, T. 3 S., R. 82 

W., at Perry Olsen Ranch, just downstream from Rock Creek and 6 miles southeast of 

State Bridge. Datum of gage is 7,272.35 feet above mean sea level, unadjusted.

Drainage area. 82.6 square miles.

Records available. May 1944 to September 1950.

Extremes.--Maximum discharge during year, 490 second-feet June 6 (gage height, 4.94 feet, 

from recorded range in stage); minimum daily, 4,8 second-feet Sept. 6.

1944-50: Maximum discharge, 943 second-feet May 19, 1948*(gage height, 5.29 feet), 

from rating curve extended above 740 second-feet; minimum daily, 2.9 second-feet 

Sept. 21, 1944.

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

which are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

20 

19 

16 

15 

13

13 

12 

11 

15 

17

16 

18 

21 

22 

19

16 

16 

21 

25 

28

25 

22 

26 

22 

22

21 

20 

19 

21 

20 

19

Nov.

24 

22 

22 

21 

21

22 

24 

21 

»20

21

21 

20 

b!9 

b20 

b21

b21 

b21 

b21 

b21 

b21

b20 

b!8 

b20 

b21 

21

20 

19 

19 

19 

21

Dec.

16 

20 

»b22 

b21 

b!9

b20 

22 

21 

22 

20

19 

19 

17 

16 

15

16 

17 

16 

17 

17

15 

14 

14 

15 

15

15 

15 

16 

16 

17 

17

Jaa.

17 

17 

15

13 

14

14 

16 

15 

15 

14

15 

15 

15 

15 

14

15 

15

»15 

15 

16

16 

16 

16 

16 

15

13 

15 

16 

17 

16 

16

Feb.

15 

14 

14 

14 

15

15 

15 

15 

14 

14

14 

14 

15 

16 

16

*16 

16 

15 

15 

15

15 

14 

14 

14 

14

14 

14 

14

Month

Octo 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr! 

Mnv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Nar.

14 

15 

16 

16 

16

14 

14 

15 

15 

14

13 

12 

12 

13 

13

»14 

15 

16 

15 

15

15 

16 

16 

16 

16

16 

16 

18 

17 

19 

17

Apr.

20 

23 

21 

18 

19

20 

27 

32 

27 

25

25 

»30 

33 

43 

43

37 

40 

52 

54 

64

88 

122 

140 

120 

90

81 

74 

81 

79 

67

Secondfoot-days

590 

622 

541

29,926.6

472 

410 

469 

1,595 

5,949 

9,663 

1,839 

368.2 

310.5

22,828.7

May

65 

90 

129 

152 

125

104 

90 

92 

90 

81

104 

136 

148 

185 

208

215 

257 

266 

242 

248

282 

334 

349 

353 

303

236 

200 

178 

172 

205 

310

Maximum

28 

24 

22

546

17 

16 

19 

140 

353 

456 

133 

22 

22

456

June

383 

417 

443 

361 

393

456 

425 

365 

400 

420

440 

420 

405 

395 

381

377 

377 

342 

289 

257

242 

233 

202 

205 

200

188 

175 

162 

155 

145

July

133 

120 

106 

100 

92

88 

88 

90 

88 

85

77 

70 

62 

56 

50

48 

44 

41 

39 

39

36 

34 

32 

30 

30

28 

27 

29 

28 

26 

23

Minimum

11 

18 

14

7.8

13 

14 

12 

18 

65 

145 

23 

6.0 

4.8

4.8

Aug.

22 

19 

19 

19 

20

19 

18 

15 

14 

13

15 

15 

14 

12 

11

10 

9.9 

7.8 

7.8 

7.2

6.6 

6.3 

6.0 

6.0 

6.3

8.6 

9.6 

8.2 

8.9 

7.8 

7.2

Mean

19.0 

20.7 

17.5

82.0

15.2 

14.6 

15.1 

53.2 

192 

322 

59.3 

11.9 

10.4

62.5

Sept.

7.2 

6.6 

5.7 

5.7 

5.7

4.8 

5.1 

5.4 

6.6 

6.9

8.6 

15 

15 

15 

12

10 

8.2 

8.2 

10 

22

19 

16 

15 

15 

13

10

1011

10 

7.8

Runoff in 

acre-feet

1,170 

1,230 

1,070

59,350

936 

813 

930 

3,160 

11,800 

19,170 

3,650 

730 

616

45,280

Peak discharge (base, 520 sec.-ft.) . Ko peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Dec. 7 to Mar. 15, Mar. 19 to Apr. 11 (stage-discharge relation affected by ice during part of periods), June 7-14j discharge computed on basis of 2 discharge measurements, recorded range in stage, weather records, and records for nearby stations.
96 TRIBUTARIES ABOVE GDNNISON RIVER

Eagle River at Redcliff, Colo.

Location. Water-stage recorder, lat. 39°30 I 25", long. 106°22'00", In S*£ sec. 20, T. 6 

S., K. 80 V., at Redcliff, a third of a mile upstream from Turkey Creek. Datum of 

gage is 8,652.02 feet above mean sea level, datum of 1929.

Drainage area.--72.2 square miles.

Records available. October 1910 to September 1925, May 1944 to September 1950.

Average discharge. 21 years (1910-25, 1944-50), 62.5 second-feet.

Extremes. Maximum discharge during year, 374 second-feet June 6 (gage height, 3.70 feet); 

minimum daily, 10 second-feet Dec. 1-4, 15, Jan. 5-8.

1910-25, 1944-50: Maximum discharge observed, 1,010 second-feet June 5, 1912 (gage 

height, 4.0 feet, site and datum then in use), from rating curve extended above 500 

second-feet; minimum daily, 1 second-foot 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. 27).

Day

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

IS 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

24 

20 

20 

19 

IS

18 

17 

17 

20 

21

20 

19 

20 

20 

19

18 

21 

21 

22 

ZO

18 

17 

17 

17 

16

17 

16 

15 

17 

17 

18

MOT.

17 

17 

17 

16 

17

16 

15 

 15 

15 

15

15 

14 

14 

15 

15

15 

15 

15 

15 

15

15 

14 

14 

16 

14

15 

14 

14 

14 

12

Dec.

10 

10 

 10 

10 

11

11 

11 

12 

12 

12

11 

11 

11 

11 

10

11 

12 

12 

12 

12

11 

11 

11 

11 

11

11 

11 

11 

11 

11 

11

Jan.

12 

12 

11 

11 

10

10 

1O 

10 

11 

*11

11 

11 

11 

11 

12

12 

12 

13 

13 

13

13 

13 

13 

12 

11

11 

11 

12 

1Z 

12 

11

Fteb.

11 

11 

11 

11 

11

12 

 12 

12 

12 

11

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

1Z 

12 

12

12 

13 

13

Month

Octo 

Move 

Dece

Ca

Janu 

Ftebr 

Hare 

Aprl 

 ay.

June 

July 

Augu 

Sept

Ha

 ber. ...................................

 ber. ...........----------------------.

lendar year 194S

ter year 1949-50 ........................

Mar.

12 

12 

12 

12

13

13 

13 

*13 

14 

13

12 

12 

12 

13 

14

14 

15 

13 

14 

13

13 

15 

15 

15 

15

14 

18 

20 

18 

26 

20

*pr.

25 

32 

26 

24 

23

26 

37 

50 

46 

33

33 

46 

66 

74 

48

 39 

41 

48 

44 

47

64 

7S 

86 

72 

60

53 

52 

64 

70 

60

Secondfoot-days

579 

450 

343

18,223

358 

332 

448 

1,467 

3,836 

5,300 

1,321 

559 

428

15,421

nay

62 

83 

108 

108 

S3

72 

70 

72 

72 

76

95 

1O5 

105 

108 

120

125 

142 

142 

132 

140

168 

204 

226 

232 

187

156 

135 

130 

115 

118 

145

**t1m,n.

24 

17 

12

3S2

13 

13 

26 

86 

232 

278 

70 

23 

18

278

June

198 

243 

243 

198 

226

278 

265 

240 

210 

24O

250 

260 

236 

204 

1S7

184 

ISO 

168 

150 

140

130 

122 

112 

108 

102

93 

93 

86 

78 

76

July

70 

70 

68 

64 

60

56 

53 

54 

54 

50

52 

44

41 

40 

39

38 

38 

44 

37 

34

33 

34 

31 

32 

30

27 

27 

26 

26 

25 

24

Kln-1-.n.

15 

12 

10

10

10 

11 

12 

23 

62 

76 

24 

14 

12

1O

Aug.

22 

21 

22 

22 

20

23 

23 

20 

19 

19

19 

19 

19 

18 

18

IS 

IS 

17 

15 

16

15 

15 

15 

15 

17

18 

17 

15 

16 

14 

14

Mean

18.7 

15.0 

11.1

49.9

11.5 

11.9 

14.5 

48.9 

124 

177 

42.6 

18.0 

14.3

42.2

Sept.

14 

14 

13 

13 

13

13 

14 

12 

14 

14

15 

IS 

17 

15 

14

14 

13 

13 

15 

IS

15 

15 

14 

14 

14

14 

14 

14 

14 

14

Runoff In 

acre-feet

1,150 

893 

6 SO

36,130

710 

659 

889 

2,910 

7,610 

10,51O 

2,620 

1,110 

849

30,590

Peak discharge (base, 280 sec. -ft.). Mar 23 (9 p.m.) 294 sec. -ft.; June 6 (8 p.m.) 374 sec. -ft.

Winter discharge measurement made on this day. 

note. Stage-discharge relation affected by Ice HOT. 12, 13, 22, 23, MOT. 30 to Dec. 31, Mar. 9, 

10, 12-14-, 19, 21. Mo gage-height record Jan. 1 to Mar. 8 (stage-discharge relation affected by Ice 

during most of period), June 7-12; discharge computed on basis of 3 discharge measurements, recorded 

range In stage, Heather records, and records for nearby stations.
TRIBUTARIES ABOVE GUNNISON RIVER 97

Eagle River below Gypsum, Colo.

Location. Water-stage recorder, lat. 39°39', long. 106°57', in NW£ sec. 5, T. 5 S., R. 85

 W.,"at bridge on U. S. Highways 6 and 24 at Gypsum, 150 feet downstream from Gypsum 

Greek.

Drainage area. 957 square miles.

Records available. October 1946 to September 1950. February 1907 to December 1909 at 

 site above uypsum Creek, 800 feet upstream, published as Eagle River at Gypsum (excludes flow of Gypsum Creek).

Extremes. Maximum discharge during year, 3,840 second-feet June 7 {gage height, 7.25

 i'eet); miHimum daily, 149 second-feet Sept. 6,7.

1907-9, 1946-50: Majximum discharge observed, 5,720 second-feet June 20, 1909 (gage 

height, 7.72 feet, site and datum then in use), discharge measurement; minimum daily, 

60 second-feet Dec. 19, 1907, but may have been less during periods of ice effect.

Remarks. Records excellent. Transmountain diversions above station (see p. 27). Recoras of chemical analyses and water temperatures for the water year 1950 are given in 

Water-Supply Paper 1189.

Rating table, water year 1949-5O (gage height, in feet,

and discharge, In second-feet) 

(Shifting-control method used Oct. 1-6, 

Oct. 15 to Jan. 14)

3.0 145 4.5 870 

5.3 210 5.1 1,340 

3.6 32O 5.9 2,150 

3.9 465 7.3 3,900 

 

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

324 

329 

329 

334 

334

329 

304 

28O 

288 

312

316 

320 

312 

316 

316

312 

316 

347 

360 

370

338 

324 

342 

338 

320

316 

316 

308 

308 

316 

296

Nov.

300 

308 

312 

312 

308

30O 

296 

300 

312 

308

312 

292 

288 

300 

304

288 

284 

276 

270 

266

259 

248 

256 

276 

276

270 

266 

259 

262 

256

Dec.

245 

234 

234 

231 

214

231 

248 

238 

242 

245

^34 

200 

181 

185 

165

181 

228 

231 

238 

242

224 

190 

205 

205 

181

195 

214 

205 

192 

198 

200

Jan.

220 

214 

192 

163 

159

151 

151 

163 

192 

183

175 

185 

183 

190 

183

190 

200 

195 

190 

190

188 

185 

188 

188 

181

155 

157 

183 

198 

192 

185

Feb.

173 

163 

161 

177 

205

198 

198 

192 

181 

177

190 

192 

181 

183 

179

177 

179 

181 

177 

181

188 

169 

179 

185 

200

200 

202 

210

Month

Octo 

Move

Dece

Ca

Janu 

Pebr 

Hare 

Apr! 

Mav

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

...... ......... .....

1.......................................

ter year 1949-50 .......................

Mar.

183 

181 

188 

190 

192

195 

181 

171 

190 

183

179 

175 

155 

185 

181

175 

185 

202 

179 

185

175 

179 

181 

183 

185

192 

177 

171 

171 

179 

185

Apr.

192 

220 

252 

210 

198

214 

248 

312 

388 

334

276 

273 

329 

421 

538

426 

388 

448 

432 

438

525 

709 

821 

786 

570

525 

460 

507 

564 

489

Secondfoot-days

9,970 

8,564 

6,656

237,664

5,669 

5,178 

5,633 

12,493 

35,715 

75,390 

21,641 

6,422 

6,473

199,804

Peak discharge (base, 3,500 sec. -ft.). June 7 (7 a.m.

May

454 

525 

723 

954 

842

674 

611 

544 

525 

507

570 

758 

842 

919 

1,150

1,150 

1,410 

1,770 

1,510 

1,500

1,640 

2,020 

2,250 

2,440 

2,050

1,550 

1,260 

1,070 

975 

982 

1,540

Maximum

370 

312 

248

4,260

220 

210 

202 

821 

2,440 

3,410 

1,340 

312 

3O8

3,410

June

2,270 

2,740 

2,860 

2,080 

2,230

3,090 

3,410 

2,960 

2,380 

2,540

3,030 

3,370 

3,290 

3,250 

3,180

3,180 

3,330 

3,180 

2,650 

2,330

2,270 

2,160 

1,830 

1,940 

1,950

1,750 

1,670 

1,580 

1,480 

1,410

July

1,340 

1,220 

1,140 

1,070 

1,010

 968 

940 

940 

947 

884

891 

835 

772 

709 

639

604 

570 

611 

611 

544

507 

489 

454 

426 

396

374 

352 

356 

356 

352 

334

Aug.

312 

288 

280 

273 

256

252 

256 

238 

224 

214

21O 

210 

210 

205 

198

192 

192 

188 

185 

188

183 

173 

161 

159 

161

167 

173 

171 

171 

171 

161

Minimum Mean

280 322 

248 285 

165 215

162 651

151 183 

161 185 

155 182 

192 416 

454 1,152 

1,410 2,513 

334 698 

159 207 

149 216

149 547

3,840 sec. -ft.; June 12 (7 a.m.

Sept.

161 

159 

155 

153 

151

149 

149 

151 

161 

171

173 

188 

202 

214 

214

210 

205 

210 

228 

288

308 

292 

292 

292 

288

280 

270 

262 

252 

245

Runoff In 

acre-feet

19,780 

16,990 

13,200

471,400

11,240 

10,270 

11,170 

24,780 

70,840 

149,500 

42,920 

12,740 

12,840

396,300

) 3,810
98 TRIBUTARIES ABOVE GUNNISON RIVER

Turkey Creek at Redcliff, Colo.

Location.--Water-stage recorder, lat. 39°30'50", long. 106°22 I 05", in sec. 19, T. 6 S., R. 

80 W., at Redcliff, 1,000 feet upstream from mouth. Datum of gage is 8,641.79 feet 

above mean sea level, datum of 1929.

Drainage area.--28.6 square miles.

Records available.--June 1913 to September 1921, May 1944 to September 1950,

Average discharge.--14 years, 3,1.5 second-feet.

Extremes.--Maximum discharge during year, 299 second-feet June 13 (gage height, 4.46 feet), 

from rating curve extended above 250 second-feet; minimum daily, 1.3 second-feet Jan. 5.

1913-21, 1944-50: Maximum discharge observed, 670 second-feet June 13, 1918 (gage 

height, 4.7 feet, datum then in use); minimum discharge, 1 second-foot Oct. 21, 1919 

(gage height, 1.34 feet, datum then in use).

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

which are fair. A few small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

6 

7 

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.

6.8 

6.5 

6.5 

6.2 

6.2

5.9 

5.9 

5.9 

6.5 

6.2

5.7 

5.4 

5.7 

5.7 

5.4

5.4 

5.4 

5.7 

5.7 

4.8

4.0 

3.0 

4.5 

3.7 

4.3

4.5 

4.3 

4.3 

5.4 

4.8 

2.8

Nov.

5.1 

5.1 

4.8 

4.8 

4.3

4.0 

4,0 

4.5 

4.5 

4.5

4.3 

2.8 

3.7 

4.3 

4.5

4.0 

3.5 

4.0 

3.4 

3.2

2.7 

2.8 

3.5 

4.3 

3.7

3.5

3.5 

3.5 

3.5 

3.4

Dec.

3.2

2.7 

*3.7 

3.2 

3.2

4.3 

4.0 

3.4 

3.4 

3.2

3.2

2.7 2.5" 

' 2.2 

1.7

1.7 

1.8 

1.9 

2.0 

2.0

1.8 

1.7 

1.7 

1.7 

1.7

1.6 

1.6 

1.6 

1.6 

1.6 

1.5

Jan.

1.5 

1.5 

1.6 

1.4 

1.3

1.4 

1.4 

1.5 

1.5 

 1.5

1.4 

1.6 

2.0 

2.0 

2.0

2.0 

2.0 

2.0 

2.0 

2.0

2.0 

2.0 

2.3 

2.3 

2.2

1.8 

1.7 

1.8 

2.0 

2.0 

1.9

Feb.

1.8 

1.5 

1.4 

1.6 

1.8

2.0 

1.9 

*1.8 

1.7 

1.7

1.8

1.8 

1.8 

1.8 

1.8

2.0 

1.9 

1.9 

2.0 

1.9

1.8 

1.8 

1.7 

1.8 

2.0

2.2 

2.0 

2.0

Month

Octo 

Hove 

Decs

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

'

ter year 1949-50 .......................

Peak discharge (base, 230 sec. -ft.). June

Mar.

2.0 

1.8 

1.7 

1.9 

2.2

2.5 

2.0 

*1.8 

1.8

1.8

1.7 

1.6 

1.6 

1.6 

1.8

2.0 

2.3 

2.2 

2.2 

2.2

2.2 

2.2 

2.4 

2.5

2.5

2.4 

2.4 

2.4 

2.5 

2.8 

3.2

Apr.

4.0 

4.5 

4.3 

4.0 

4.2

5.0 

5.8 

6.6 

5.6 

5.4

6.0 

7.4 

10 

16 

16

*9.6 

10 

13 

13 

16

22 

33 

38 

30

27

20

19 

19 

21 

20

Secondfoot-days

163.1 

117.7 

74.1

10,002i4

55.6 

51.2 

66.2 

415.4 

1,892 

5,109 

1,064 

355.5 

191.9

9,555.7

May

21 

27 

42 

50 

41

33 

29 

26 

26 

27

34 

46 

52 

58 

62

66 

75 

81 

74 

79

88 

106 

118 

118 

103

83 

67 

58 

55 

61 

86

Maximum

6.8 

5.1

4.3

259

2.3 

2.2 

3.2

38 

118 

259 

66 

17 

8.6

259

June

122 

162 

165 

156 

176

207 

218 

210 

200 

207

224 

243 

259 

247 

239

235 

235 

224 

200 

172

153 

130 

118 

106 

101

92 

84 

79 

75 

70

July

Minimum

2.8 

2.7 

1.5

1.4

1.3 

1.4 

1.6 

4.0 

21 

70 

16 

6.5 

4.8

1.3

66 

62 

58 

54 

52

50 

48 

47 

43 

41

39 

36 

34 

33 

31

31 

31 

31 

27 

26

26 

24 

23 

22 

21

19 

19 

19 

18 

17 

16

Aug.

16 

15 

16 

16 

16

16 

17 

16 

15 

14

14 

14 

13 

12 

11

10 

10 

9.5 

9.0 

9.0

9.0 

8.0 

7.5 

7.5

8.5

9.0 

8.5 

8.0 

7.5 

7.0 

6.5

Mean

5.26 

3.92 

2.39

27.4

1.79 

1.83 

2.14 

13.8 

61.0 

170 

34.3 

11.5 

6.40

26.2

Sept.

6.5 

6.0 

5.5 

5.5 

5.5

5.0 

4.8 

5.5 

6.5 

6.5

7.6 

8.6 

7.6 

6.8 

6.5

6.. 5 

6.5 

6.5 

7.2 

8.2

' 6.8 

6.5 

6.5 

6.5 

6.5

6.2 

5.9 

5.9 

5.9 

5.9

Runoff In 

acre-feet

324 

233 

147

19,830

110 

102 

131 

824 

3,750 

10,130 

2,110 

705 

381

18,950

6 (4 p.m.) 267 sec. -ft.; June 13 (6 p.m.) 299 sec. -ft. Winter discharge measurement made on this day. 

Note.--Stage-discharge relation affected by Ice Dec. J2 to Jan. 12, Feb. 9, 10. No gage-height 

record Jan. 26 to Feb. 7, Mar. 14 to Apr. 15 (stage-discharge relation affected by Ice during part 

of periods), Aug. 9 to Sept. 10; discharge computed on basis of recorded range In stage, weather 

records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISON RIWR 99

Homestake Creek at Gold Park, Colo.

Location.--Water-stage recorder, lat. 39°24', long. 106°26', in SW£ sec. 27, T. 7 S., R. 81 

 w., at Gold Park, half a mile downstream from confluence of East and West Porks and 1\ 

miles southwest of Pando.

Drainage area. 35.7 square miles.

Records available.--October 1947 to September 1950.

Extremes. Maximum discharge during year, 570 second-feet June 16 (gage height, 4.95 feet), 

i'rom"rating curve extended above 350 second-feet; minimum, 3.8 second-feet Sept. 5 (gage 

height, 2.38 feet).

1947-50: Maximum discharge, 910 second-feet June 16, 1949 (gage height, 6.10 feet), 

from rating curve extended above 460 second-feet; minimum not determined, occurred 

during period of no gage-height record.

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

which are poor. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

21 

20 

20

18 

16

*14 

12 

10 

18 

17

21 

20 

23 

28

27

27 

28 

32 

30 

26

23 

23 

23 

20 

18

17 

16 

16 

14 

b!4 

b!4

Nov.

(*) 

14

Dec.

(*) 

12

Jan.

10

Feb.

8

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

7

Apr.

8.0 

9.0 

7.0 

3.8 

6.6

7.5 

9.5 

12 

10 

7.0

7.0 

*7.8 

13 

21 

28

14 

16 

19 

19 

21

35 

62 

53 

48 

36

27 

25 

25 

28 

29

Secondfoot-days

626 

420 

372

27,296.2

310 

224 

217 

617.2 

4,292 

10,098 

2,588 

362.4 

314.5

20,441.1

May

33 

46 

78 

88

66

54 

44 

40 

36 

34

53 

73 

87 

121 

160

175 

249 

246 

160

172

246 

306 

354 

334

237

138 

99- 

80 

76 

119 

288

Maximum

32

672

62 

354 

449 

183 

22 

21

449

June

379 

407 

365 

267 

340

449 

424 

321 

285 

348

407 

421 

407 

404

421

442 

449 

379 

324 

309

315 

282 

249 

276 

273

252 

246 

234 

219 

204

July

183 

162 

158 

138 

138

132 

126 

115 

112 

112

121 

104 

90 

80 

70

67 

67 

83 

70 

61

52 

49 

44 

40 

34

32 

32 

32 

32 

28 

24

Minimum

10

-

6.6 

33 

204 

24 

5.4 

4.2

-

Aug.

22 

20 

20 

19 

18

18 

18 

16 

14 

14

15 

14 

13 

11 

11

10 

9.2 

8.4 

8.1 

7.4

7.0 

7.0 

6.4 

6.7 

7.4

8.8 

8.1 

7.0 

6.7 

5.8 

5.4

Mean

20.2 

14 

12

74.8

10 

8 

7 

20.6 

138 

337 

83.5 

11.7 

10.5

56.0

Sept.

5.0 

4.8 

4.6 

4.4 

4.2

4.2 

4.4 

4.4 

6.4 

6.0

6.4 

16 

16 

16 

14

13 

12 

11 

12 

21

18 

18 

16 

14 

14

13 

10 

9.5 

8.4 

7.8

Runoff In 

acre-feet

1,240 

833 

738

54,140

615 

444 

430 

1,220 

8,510 

20,030 

5,130 

719 

624

40,530

Peak discharge (base. 700 see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--Ho gage-height record Nov. 1 to Apr. 11 (stage-discharge relation affected by ice during most 

of period); discharge computed on basis of 2 discharge measurements, weather records, and records for 

stations on nearby streams.
100 TRIBUTARIES ABOVE G1BINISON RIVER

Homestake Creek near Redcliff, Colo.

Location. Water-stage recorder, lat. 39°29', long. 106°22', in sec. 6, T. 7 S., R. 80 W., 

a miles upstream from mouth and 3 miles south of Redcliff.

Drainage area. 58.9 square miles.

Records available --May 1944 to September 1950. October 1910 to September 1918 at sites 

near mouth, published as Homestake Creek at Redeliff 1911-16, and near Redcliff 1917-18. 

Records practically equivalent.

Average discharge. 14 years, 95.9 second-feet.

Extremes.--Maximum daily discharge during year, 635 second-feet June 6; minimum discharge, 

4.4 second-feet Sept. 7 (gage height, 1.55 feet).

1910-18, 1944-50: Maximum discharge observed, 1,300 second-feet June 34, 1918 (gage 

height, 6.2 feet, site and datum then in use); minimum observed, 0.6 second-foot Jan. 25, 

1915 (discharge measurement).

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

which are fair. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

28 

26 

25 

24 

22

20 

*19 

17 

24 

24

27 

26 

3O 

35 

35

34 

34 

40 

38 

34

3O 

36 

35 

32 

29

26 

24 

24 

22 

21 

20

Nov.

2O 

2O 

20 

19 

19

19 

2O 

*22 

2O 

17

19 

19 

18 

19 

20

2O 

19 

19 

19 

19

19 

18 

18 

19 

2O

19 

18 

18 

18 

17

Dec.

(*) 

15

Jan.

(*) 

12

Feb.

(*)

10

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 1949

ter year 1949-5O ...............

Mar.

(*) 

1O

Apr.

15 

20 

19 

18 

18

23 

3O 

37 

33 

29

34 

*42 

58 

79 

79

58 

63 

70 

70 

77

106 

133 

133 

116 

92

71 

68 

77 

84 

77

Secondfoot -days

861 

571 

465

34,418.2

372 

2SO 

31O 

1,829 

6,704 

13,021 

3,159 

467.9 

362.2

28,402.1

May

80 

111 

150 

173 

136

111 

94 

84 

82 

77

96 

136 

150 

192 

258

266 

352 

376 

242 

245

348 

420 

490 

5OO 

360

215 

155 

125 

115 

170 

395

Maximum

4O 

22

688

133 

500 

635 

214 

24 

21

635

June

535 

565 

525 

4?5 

460

635 

61O 

465 

400 

475

560 

600 

550 

49O 

5O8

57O 

585 

485 

392 

364

364 

328 

284 

3O4 

300

273 

266 

256 

266 

231

July

214 

193 

189 

174 

165

165 

159 

148 

148 

145

159 

128 

114 

100 

88

86 

78 

104 

90 

74

61 

58 

49 

45 

39

35 

33 

35 

32 

28 

24

Minimum

17 

17

4.0

15 

77 

231 

24 

7.2 

4.9

4.9

Aug.

22 

2O 

20 

21 

20

21 

24 

23 

21 

20

2O 

2O 

18 

16 

14

13 

13 

12 

11 

11

11 

9.6 

9.O 

9.O 

11

12 

11 

10 

9.6 

8.5 

7.2

Mean

27.8 

19.0 

15

94.3

12 

10 

10 

61. 0 

216 

434 

102 

15.1 

12.1

77.8

Sept.

6.7 

6.2 

5.8 

5.8 

5.8

5.4 

4.9 

5.4

7.2 

8.5

8.5 

16 

20 

19 

16

15 

13 

13 

12 

20

21 

19 

17 

16 

16

15 

13 

11 

11 

9.0

Runoff In 

acre-feet

1.71O 

1,130 

922

68.28O

738 

555 

615 

3,630 

13,3OO 

25,830 

6,270 

928 

718

56,350

Peak discharge (base, 710 see.-ft.) . June 2 (time unknown) about 72O. sec.-ft.; June 6 or 7 (time 

unknown) about 8OO sec.-ft.; June 12 (time unknown) about 77O sec.-ft.

* Winter discharge measurement made on this day.

Note . Stage-discharge relation affected by Ice Oct. 3O to Nov. 8, Nov. 12-21, Nov. 23 to Dec. 4. 

Ho gage-height record Dec. 5 to Apr. 11 (stage-discharge relation affected by Ice during most of 

period), Hay 22 to June 12, June 16, 17; discharge computed on basis of 3 discharge measurements, 

weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GONKISON RIVER 101

Gore Creek at upper station, near Hinturn, Colo.

Location. Water-stage recorder, lat. 39°37'35n , long. 106°16'40n , In NWi sec. 18, T. 5 S., 

H. 79 W., 100 feet downstream from bridge on U. S. Highway 6, a quarter of a mile upstream from Black Gore Creek, and 8j miles northeast of Hinturn.

Drainage area. 14.4 square miles.

Records available. October 1947 to September 1950.

Extremes. Mariam discharge during year, 331 second-feet June 16 (gage height, 5.92 feet), 

 from rating curve extended above 220 second-feet; minimum dally, 1.7 second-feet Feb. 15- 

24.

1947-50: Maximum and minimum discharges, those of 1950.

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

wnich are fair. Bo diversion or regulation above station.

Discharge/ In second-feet, Hater year October 1949 to September 195O

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

Oct.

8.2 

8.2 

8.2 

7.7 

7.2

6.7 

5.9 

5.4 

5.9 

5.4

7.4 

8.2 

8.5 

7.2

6.9 

7.7 

8.5 

7.7 

6.9

6.4 

8.5 

6.7 

5.9 

5.7

5.4 

5.4 

5.0 

4.7 

5.2 

4.0

Mov.

4.O 

4.0 

4.O 

4.O 

4.0

4.O 

4.O 

4.3 

4.0 

3.8

*4.2 

3.9 

3.5 

3.2

3.2 

3.6 

3.4 

3.2 

3.2

2.9 

2.9 

2.9 

2.9 

2.5

2.2 

2.2 

2.0 

2.0 

2.0

Dec.

2.0 

2.0 

2.0 

2.0 

l.S

2.2 

2.1 

2.1 

2.2 

2.2

2.2 

2.2 

 2.2 

2.4

2.4 

2.4 

2.3

2.1 

2.O

2.O 

2.0 

2.O 

2.0 

2.2

2.2 

2.2 

2.2 

2.2 

2.2 

2.2

Jan.

2.2 

2.2 

2.2 

2.2 

2.0

2.0 

2.0 

2.0 

1.9 

2.1

2.1 

2.1 

2.3 

2.5

2.3 

2.5 

 2.5 

2.3 

2.0

2.0 

2.0 

2.0 

2.3 

2.5

2.5 

2.4 

2.2 

2.2 

2.1 

2.4

Feb.

2.4 

2.4 

2.2 

2.2 

2.1

2.1 

2.1 

1.9 

1.9 

1.9

1.9 

1.8 

1.8 

1.7

 1.7 

1.7 

1.7 

1.7 

1.7

1.7 

1.7 

1.7 

1.7 

1.3

2.0 

2.1 

2.1

Mmth

Octo 

Move 

Dece

Ca

janu 

Febr 

Bare 

Apr!

June 

July 

Augu 

Sept

wa

 her. ...........-----_------------------

lendar year 1949 

ary

ter year 1949-5O .......................

Peak discharge (base, 200 sec. -ft.). June

Mar.

2.1 

2.1 

2.1 

2.4 

2.5

2.4 

2.4 

2.4 

2.5 

2.4

2.2 

2.2 

2.2 

2.2

 2.4 

2.7 

3.0 

2.5 

2.5

2.4 

2.4 

2.4 

2.4 

2.4

2.6 

2.5 

2.6 

2.5 

2.5 

2.5

Apr.

2.4 

2.5 

2.5 

2.5 

2.5

3.5 

6.4 

7.7 

7.2 

5.4

4.T 

5.0 

 9.3 

13 

11

8.7 

9.6 

12 

11 

13

19 

25 

28 

25 

20

14 

12 

12 

12 

11

Secondfoot-days

207.9 

100.1 

66.3

11,499.4

68. O 

53.7 

74.6 

317.9 

1,540 

4,719 

1,302 

262.8 

198.7

8,911.0

M

»y

10

16 

30 

34

26

20 

17 

16 

14 

14

19 

30 

38 

46 

56

59 

73 

74 

62 

65

36 

111 

118 

104 

75

55 

45 

39 

37 

53 

98

rrl^Tm

8.5 

4.3 

2.4

260

2.5 

2.4 

3.0 

28 

118 

225 

84 

14 

14

225

June

133

142 

116 

90 

138

206 

197 

147 

14O 

179

216 

223 

220 

216 

210

225 

208 

185 

160 

151

156 

133 

132 

136 

130

119 

116 

104 

97 

94

mn|»|»

July

84

75 

74 

68 

65

63 

62 

61 

61 

59

57 

53 

48 

42 

40

36 

36 

36 

31 

30

2S 

26 

23 

20 

2O

18 

18 

18 

18 

17 

15

4.O 

2.0 

1.8

-

1.9 

1.7 

2.1 

2.4 

1O 

90 

15 

5.O 

4.0

1.7

Aug.

14 

13 

13 

12 

12

11 

11 

9.9 

9.6 

9.3

9.9 

9.3 

8.7 

8.2 

8.0

7.7 

7.2 

6.9 

6.7 

6.4

6.4 

6.2 

6.2 

6.2 

6.4

7.4 

6.9 

6.4 

6.2 

5.7 

5.0

Mean

6.71 

3.34 

2.14

31.5

2.19 

1.92 

2.41 

10.6 

49.7 

157 

42.0 

8.48 

6.62

24.4

Sept.

4.7 

4.5 

4.5 

4.2 

4.O

4.0 

4.O 

4.O 

5.4 

5.7

5.7 

8.5 

8.2 

7.7 

7.7

6.9 

6.4 

6.4 

8.7 

14

11 

9.6 

8.5 

8.O 

7.4

6.7 

6.2 

5.7 

5.4 

5.0

Runoff In 

acre-feet

412 

199 

132

22,810

135 

1O7 

148 

631 

3,050 

9,360 

2,580 

521 

394

17,670

1 (7:30 p.B.) 2O6 sec. -ft.; June 6 (7 p.B.) 275 sec 

ft.; June

* Winter discharge BeaaureBent Bade on this day.

Mote. Stage-discharge relation affected by Ice Oct. 31 to Dec. 6. Ho gage-height record Dec. 7 to 

Apr. 6 (stage-discharge relation affected by Ice during Boat of period); discharge coBputed on hasIB 

of 4 discharge eaaureMenta, weather records, and records for nearby stations.
102 TRIBUTARIES ABOVE GUNNISON RIVER

Gore Creek near Minturn, Colo.

Location.--Water-stage recorder, lat. 39°37'05", long. 106°26'00", in Sltf£ sec. 14, T. 5 S., 

 R. 81 W., at private bridge, 1 mile upstream from mouth, 2 miles north of Minturn.

Drainage area. 100 square miles.

Records available. May 1944 to September 1950.

Extremes. Maximum discharge during year, 1,130 second-feet June 11 (gage height, 4.43 feet), 

from rating curve extended above 830 second-feet; minimum daily, 13 second-feet Jan. 5.

1944-50: Maximum discharge, 1,340 second-feet June 8, 1947 (gage height, 4.75 feet), 

from rating curve extended above 830 second-feet; minimum daily, 11 second-feet Jan. 20, 

1945.

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

which are fair. A few small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

Zl 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

41 

38 

37 

37 

34

34 

33 

31 

32 

32

34 

34 

37 

38 

35

34 

35 

39 

39

37

33 

35 

34 

33 

33

33 

31 

30 

32 

31 

30

Nov.

30 

30 

28 

26 

26

24 

22 

22 

23 

22

20 

 20 

22 

22 

22

20 

20 

20 

20 

19

19 

20 

20 

20 

19

19 

19 

19 

18 

18

Dec.

18 

17 

17 

16 

16

17 

18 

18 

18

18

17 

17 

16 

*15 

15

17 

17 

17 

17 

17

16 

17 

17 

17 

16

16 

16 

16 

16 

16 

16

Jan.

17 

16 

15 

14 

13

14 

15 

16 

16 

16

 17 

17 

17 

17 

18

19 

19 

19 

19 

18

18

18 

18 

18 

17

15 

16 

17 

16 

16 

15

Feb.

15 

14 

14 

L5 

16

15 

15 

*15 

14 

14

16 

16 

15 

15 

15

15 

14 

14 

14 

14

15 

14 

15 

15 

15

15 

16 

16

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 194S

ter year 1949-5O .......................

Peak discharge (base, 90O sec. -ft.). June

Mar.

15 

15 

15 

15 

16

15 

15 

15 

 15 

15

14 

14 

14 

15

16

16 

16 

15 

15

14

14 

16 

16 

16 

16

16 

16 

18 

17 

22 

19

Apr.

21 

26 

22 

22 

24

28 

34 

50 

42 

35

35 

 38 

47 

66 

65

50 

53 

64 

63 

74

103 

122 

134 

119 

104

89 

82 

82 

84 

79

Secondfoot-days

1,066 

649

517

48,976

516 

416 

486 

1,857 

8,418 

20,415 

5,041 

1,389 

944

41,714

6 (9 p.m.)

May

74 

89 

128 

155 

130

114 

106 

103 

103 

101

119 

157 

187 

229

270

274 

354 

404 

348 

348

458 

572 

608 

590 

492

365 

296 

253 

237 

274 

480

Maximum

41 

30 

18

961

19 

16 

22 

134 

608 

900 

326 

70 

45

900

June

650 

722 

704 

578 

686

886 

893 

764 

698 

770

865 

900 

872 

858 

844

879 

858 

782 

710 

644

638 

572 

542 

542 

502

464 

442 

409 

387 

354

July

326 

296 

270 

249 

233

225 

225 

225 

214 

2OO

197 

187 

177 

164 

151

144 

138 

136 

130 

122

117 

112 

104 

98 

95

92

87 

87 

84 

82 

74

Minimum

30 

18 

15

15

13 

14 

14 

21 

74 

354 

74 

30 

26

13

Aug.

70 

66 

62 

64 

59

58 

56 

52 

49 

48

49 

49 

48 

47 

43

41 

41 

40 

39

37

36 

34 

34 

34 

34

36 

36 

33 

33 

31 

30

Mean

34.4 

21.6 

16.7

134

16.6 

14.9 

15.7 

61.9 

272 

680 

163 

44.8 

31.5

114

1,120 sec. -ft.; June 11 (10 pirn.)

Sept.

29 

29 

28 

27 

26

26 

26 

26 

28 

30

30 

38 

37 

34 

33

32 

31 

30 

30 

45

41 

38 

35 

34 

34

31 

31 

29 

28 

28

Runoff In 

acre-feet

2,110 

1,290 

1,030

97,130

1,020 

825 

964 

3,680 

16,700 

40,490 

10,000 

2,760 

1,870

82,740

1,130 sec.

* Winter discharge measurement made on this day.

Hote . Stage-discharge relation affected by ice Oct. 31 to Dec. 2. No gage-height record Dec. 3 

to Apr. 11 (stage-discharge relation affected by Ice during most of period); discharge computed on 

basis of 4 discharge measurements, weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISON RIVER 

Black Gore Creek near Minturn, Colo.

103

Location.--Water-stage recorder, lat. 39°35'45", long. 106°15'50", In NWtr sec. 29, T. 5 S., 

K - ''y W., three-quarters of a mile upstream from Timber Creek, 2i miles upstream from 

mouth, and 9 miles east of Minturn.

Drainage area.--11.8 square miles.

Records ^available.--October 1947 to September 1950.

Extremes.--Maximum discharge during year, 240 second-feet June 1 (gage height, 4.89 feet), 

rrom rating curve extended above 160 second-feet; minimum, 0.9 second-foot Jan. 11 (gage 

height, 2.79 feet).

1947-50: Maximum discharge, 300 second-feet May 22, 1948 (gage height, 5.15 feet), 

from rating curve extended above 160 second-feet; minimum, that of Jan. 11, 1950.

Remarks. Records good above 10 second-feet and fair below. No diversion or regulation 

above station.

Discharge,'In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

4.9 

4.2 

3.9 

3.7 *3.7

3.4 

3.0 

3.0

3.0 

4.1 

4.6 

4.2 

3.7

3.0 

3.7 

3.9 

3.4 

2.7

2.8 

2.8 

2.7 

2.7 

2.7

2.7 

3.0 

2.4 

2.7 

2.7 

3.2

Nov.

3.0 

3.0 

3.0 

2.9 

2.9

2.9 

3.5 

3.7

3.7 

*3.9 

3.5 

3.2 

3.0

3.0 

3.3 

3.2 

3.0 

3.0

2.7 

2.7 

2.7 

2.7 

2.2

2.1 

2.1 

1.9 

1.9 

1.9

Dec.

1.9 

1.9 

1.9 

1.9 

1.5

2.1 

1.9 

1.9

1.9 

2.1 

2.1 

*2.2 

2.4

2.4 

2.4

2.1 

1.9 

1.8

1.8 

1.8 

1.8 

1.8 

2.1

2.2 

2.2 

2.1 

2.1 

2.1 

2.1

Jan.

2.1 

2.1 

2.1

2.1

1.9

1.9 

1.9 

1.8

1.8 

1.9 

1.9 

2.0 

2.2

2.0 

2.2 

*2.2 

1.9

1.8

1.8 

1.8 

1.8 

2.0 

2.3

2.3 

2.2 

2.0 

2.0 

1.9 

2.2

Feb.

2.2 

2.0 

2.0 

1.9

1.9

1.9 

1.7 

1.8

1.8 

1.7 

1.7 

1.6 

1.6

 1.6 

1.6 

1.5 

1.6 

1.6

1.6 

1.6 

1.6 

1.6 

1.6

1.6 

1.6 

1.6

Month

Goto 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50" .......................

Mar.

1.6 

1.6 

.6 

.5 

.6

.5 

.5 

.5

1.5 

1.5 

1.5 

1.4 

1.4

 1.4 

1.8 

2.3 

1.6 

1.6

1.5

1.5 

1.5 

1.5 

1.5

1.7 

1.6 

1.7 

1.6 

1.6 

1.6

Apr.

1.5 

1.6 

1.6 

1.5 

1.6

2.2 

3.5 

4.5

3.2

3.4 

4.8 

*5.6 

5.6 

5.6

3.7 

4.2 

5.0 

5.0 

6.8

10 

15 

19 

18 

12

9.3 

8.6 

9.3 

9.3 

7.8

Secondfoot-days

103.3 

86.7 

62.6

6,781.2

61.7 

48.1 

48.7 

193.7 

1,765.2 

2,851 

453.0 

112.0 

79.3

5,865.3

Peak discharge (base, 150 sec. -ft.) .--May 23 (8 p.m.)

Jun4 5 (9 p.m. 7 235 sec. -ft.

May

8.2 

15 

27 

32 

22

18 

15 

15 

15 

17

26 

39 

50 

63 

65

68 

84 

80 

69 

74

89 

116 

133 

116 

92

70 

60 

53 

53 

69 

112

Maximum

4.9 

 3.9 

2.4

178

2.3 

2.2 

2.3 

19 

133 

160 

33 

5.6 

4.8

160

June

149 

147 

119 

98 

131

160 

133 

112 

103 

109

117 

133 

127 

120 

117

114 

103 

93 

82 

76

71 

65 

60 

56 

51

47 

44 

40 

38 

36

July

.33 

31 

28 

27 

25

23 

23 

23 

21 

19

17 

15 

14 

12 

11

11 

11 

12 

10 

9.3

8.6 

8.2 

7.5 

7.1 

7.1

6.8 

6.8 

6.8 

6.8 

6.4 

5.6

Aug.

5.3 

5.0 

5.6 

5.3 

5.0

5.0 

4.5 

4.2 

4.2 

4.2

4.5 

4.0 

3.7 

3.7 

3.5

3.2 

3.0 

2.8 

2.8 

2.8

2.7 

2.7 

2.5 

2.5 

2.7

3.2 

2.8 

3.0 

2.8 

2.5 

2.3

Minimum Mean

2.4 3.33 

1.9 2.89 

1.5 2.02

18.6

1.8 1.99 

1.5 1.72 

1.4 1.57 

1.5 6.46 

8.2 56.9 

36 95.0 

5.6 14.6 

2.3 3.61 

2.0 2.64

1.4 16.1

188 sec. -ft.; June 1 (6 p.m.) 240

Sept.

2.3 

2.3 

2.2 

2.2 

2.2

2.0 

2.0 

2.3 

2.8 

2.8

3.0 

4.8 

4.2 

3.5 

2.8

2.5 

2.3 

2.3 

2.8 

4.5

3.0 

2.7 

2.5 

2.5 

2.3

2.3 

2.2 

2.0 

2.0 

2.0

Runoff in 

acre -feet

205 

172 

124

13,450

122 

95 

97 

384 

3,500 

5,650 

899 

222 

157.

11,630

sec. -ft.)

* Winter discharge measurement made on this day 

Note. Stage-discharge relation affected by Ice Oct. 11, 12, Oct. 20 to Nov. 8, Nov. 11-23, Nov. 

3oT5~Deo. 3, Mar. 6-8, Apr. 3, 5, 7, 10, 11.

207364 O- 52 - 8
104 TRIBUTARIES ABOVE G0NHISON RIVER

Roaring Fork at Aspen, Colo.

Location. Water-stage recorder, lat. 39°11 I 20", long.. 1060 48 l 55n , in sec. 7, T. 10 S., R. 

B4 H., at Aspen, three-quarters of a mile upstream from Hunter Creek. Datum of gage is 

7,884.58 feet aobve mean sea level, datum of 1929.

Drainage area. 109 square miles.

Records available. October 1910 to September 1921 and January 1934 to September 1950 in 

reports or Geological Survey. January 1911 to September 1921 and April 1932 to September 1950 in reports of State engineer. Records since May 24, 1935, equivalent to earlier records if flow through Twin Lakes tunnel is added to flow past station.

Average discharge. 29 years (1910-21, 1932-50), 156 second-feet, including diversion by 

 rwin Lakes tunnel.

Extremes. Maximum discharge during year, 625 second-feet June 7 (gage height, 3.57 feet): 

minimum daily, 6.5 second-feet Sept. 6.

1910-21, 1932-50: Maximum discharge, 3,170 second-feet June 18, 1917 (gage height, 

7.2 feet, site and datum then in use, from high^water marks), from rating curve extended above 1,200 second-feet; minimum daily prior to construction of Twin Lakes 

tunnel, 15 second-feet July 15, 16, 1934; minimum dally since diversion through Twin 

Lakes tunnel began, 3.2 second-feet Aug. 15, 1940.

Remarks. Records excellent except those for periods of ice effect or no gage-height recoroT which are fair. Transnountain diversion at point 15 miles upstream through Twin 

Lakes tunnel to Arkansas River Basin since May 24, 1935 (see p. 27). Head gate of 

Salvation ditch, which diverts water for irrigation of about 2,100 acres, is located a 

short distance upstream.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

41 

40 

33 

38 

34

3* 

33 

32 

45 

41

42 

40 

47 

50 

46

42 

45 

47 

45 

4O

36 

34 

40 

37 

35

36 

33 

35 

33 

34 

28

Hbv.

 33 

31 

31 

31 

31

28 

27 

28 

29 

30

 31 

28 

30 

30 

31

29 

30 

2S 

2S 

2S

28 

2S 

28 

31 

30

29 

3O 

30 

30 

29

Dec.

30 

30 

30 

 30 

27

27 

28 

27 

26 

26

26 

25 

23 

23 

22

26 

26 

27 

27 

27

26 

25 

26 

26 

27

25 

26 

26 

25 

25 

25

Jan.

27 

27 

26 

24 

24

23 

23 

23 

24 

24

24 

 24 

24 

25 

26

27 

27 

27 

27 

27

26 

26 

27 

26 

22

24 

24 

25 

24 

24 

24

Feb.

24 

23 

24 

26 

25

26 

24 

23 

 23 

24

23 

23 

22 

23 

22

22 

22 

22 

21 

22

23 

21 

23 

23 

23

23 

23 

23

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Hnv

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

ember. ..................................

ter year 1949-50 .......................

Mar.

22 

23 

23 

23 

23

24 

22 

22 

24 

 23

23 

23 

21 

21 

23

22 

23 

24 

21 

23

21 

21 

21 

21 

21

21 

2O 

21 

21 

20 

20

Apr.

21 

23 

25 

22 

20

24 

28 

36 

37 

31

27 

28 

40 

51 

52

42 

42 

52 

51 

52

66 

85 

94 

94 

72

69 

75 

79 

93 

82

Secondfoot -day s

1,199 

885 

815

38,373

775 

646 

681 

1,513 

5,063 

10,177 

2,518 

506.0 

568.6

25,346.6

May

86 

104 

132 

142 

112

99 

94 

88 

86 

85

101 

115 

120 

136 

163

157 

193 

210 

169 

193

215 

a25O 

3310 

335O 

aZSO

alSO 

161 

145 

145 

176 

296

Maximal

50 

33 

30

972

27 

26 

24 

94 

350 

480 

167 

28 

40

480

June

376 

420 

420 

313 

348

475 

48O 

36S 

324 

356

408 

44O 

432 

432 

416

42S 

450 

392 

316 

2S5

285 

269 

232 

247 

241

223 

21S 

2O8 

195 

181

July

167 

151 

151 

13S 

127

113 

118 

122 

112 

105

HO 

97 

39 

83 

79

72 

66 

77 

66 

56

SO 

46 

42 

4O 

42

37 

35 

36 

32 

31 

28

*«-

25 

23 

24 

23 

21

23 

28 

23 

21 

19

21 

22 

19 

18 

17

16 

16 

15

al3' 14 

a!2 

all 

alO 

a9.0 

a9.6

10 

9.8 

9.2 

8.6 

8.3 

7.5

I 

Minimum Mean

28 38.7 

27 29.5 

22 26.3

20 105

22 25.0 

21 23.1 

2O 22.0 

20 50.4 

85 163 

1S1 339 

28 81.2 

7.5 16.3 

6.5 19.0

6.5 69.4

Sept.

7.0 

7.2 

7.8 

7.5 

6.8

6.5 

7.2 

7.O 

8.6 

12

13 

21 

27 

26 

23

19 

18 

17 

18 

24

20 

IS 

17 

18 

26

4O 

39 

39 

35 

33

Runoff In 

acre-feet

2,380 

1,760 

1,620

76,140

1.54O 

1,280 

1,350 

3.00O 

10,040 

20,190 

4,990 

l.OOO 

1,130

50,280

* Winter discharge measurement made- on this day.

a Ho gage-height record; discharge computed on basis of recorded range In stage, weather records, 

and records for station at Clernrood Springs.

Note. Stage-discharge relation affected by Ice Dec. 5, 6, Dec. 11 to Jan. 24, Mar. 13, 14.
TRIBUTARIES ABOVE GDNNISON RIVER 105

Roaring Fork at Glenwood Springs, Colo.

Location.--Water-stage recorder, lat. 39°33', long. lt)7°20', in sec. 9, T. 6 S., R. 89 W.,

 at (Jlenwood Springs, 1,500 feet upstream from mouth. Datum of gage is 5,720.73 feet 

above mean sea level, adjustment of 1912.

Drainage area. 1,460 square miles.

Records available. October 1905 to September 1909, September 1910 to September 1931, and 

October 1939 "to September 1950 in reports of Geological Survey. April 1906 to September 

1909 and September 1910 to October 1950 in reports of State engineer.

Average discharge.--44 years (1905-9, 1910-50), 1,457 second-feet.

Extremes.--Maximum discharge during year, 7,090 second-feet June 17 (gage height,.5.39

 feet); minimum daily, 300 second-feet Jan. 7.

1905-9, 1910-50: Maximum discharge, 17,600 second-feet June 14, 1918, June 14, 1921; 

maximum gage height, 8.7 feet June 14, 1921, from high-water marks; minimum discharge, 

145 second-feet Jan. 21, 1935 (gage height, 0.65 foot); minimum daily,, 179 second-feet 

Jan. 21, 1935.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Diversions above station for irrigation. Transmountain diversion through Twin Lakes and Busk-Ivanhoe tunnels to Arkansas River Basin (see p. 27).

Revisions (water years). W 918: 1908.

Rating table, water year 1949-50, except period of Ice effect 

(gage height, In feet, and discharge, In second-feet)

0.8 270 2.6 l.SOO 

1.1 41O 3.5 3,O80 

1.5 660 4.2 4,340 

2.0 1,130 5.4 7,120

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

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

Oct.

758 

70S 

6C4 

668 

653

639 

618 

6O4 

639 

708

684 

684 

684 

700 

708

684 

692 

724 

732 

724

684 

653 

668 

6S4 

668

646 

632 

61S 

611 

618 

584

Nov.

597 

597 

584 

578 

578

566 

560 

554 

572 

572

590 

542 

536 

548 

560

548 

542 

536 

530 

530

518 

494 

500 

530 

51S

506 

500 

500 

494 

470

Dec.

464 

434 

434 

434 

416

*440 

464 

452 

464 

476

446 

400 

38O 

375 

350

422 

476 

464 

470 

470

446 

400 

416 

428 

434

395 

422 

416 

405 

416 

400

Jan.

440 

440 

416 

345 

355

310 

b300 

b305 

b310 

b325

*b320 

b330 

b325 

b320 

b350

b375 

b40O 

416 

405 

395

3S5 

3SO 

3S5 

405 

380

320 

330 

428 

410 

400 

385

Feb.

365 

350 

325 

370 

416

395 

400 

380 

325 

*315

385 

3S5 

355 

360 

350

340 

360 

35O 

345 

365

370 

320 

370 

360 

355

365 

375 

410

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Vtov

June 

July 

Augu 

Sept

Ha

lendar year 194S .......................

ter year 1949-50 .......................

Mar.

365 

375 

370 

365 

385

395 

365 

335 

395 

370

360 

355 

302 

375 

380

350 

355 

385 

350 

375

340 

36O 

355 

365 

375

380 

360 

345 

335 

355 

365

Apr.

1, 

1, 

1, 

1, 

1,

1, 

1, 

1, 

1, 

1,

Secondfoot-days

20,761 

16,250 

13,309

488,037

11,390 

10,161 

11,242 

25,525 

61,370 

141,070 

57,021 

17,695 

16,068

402,362

Peak discharge (base, 6,300 sec. -ft.). June 7 (6 a.m.

sec. -ft.; June 17 (5 a.m.) 7,090 sec. -ft.

370 

42S 

512 

428 

400

434 

518 

692 

767 

632

560 

548 

604 

740 

83O

758 

724 

910 

97O 

980

140 

430 

610 

540 

230

170 

130 

150 

210 

110

Hay

1,050 

1,120 

1,300 

1,700 

1,470

1,210 

1,130 

1,030 

96O 

91O

900 

1,O90 

1,250 

1,410 

1,900

2,OOO 

2,400 

2,680 

2,380 

2,420

2,800 

3,370 

3,720 

4,000 

3,56O

2,810 

2,300 

2,030 

1,860 

2,030 

3,080

Maximum

758 

597 

476

9,660

440 

416 

395 

1,610 

4,OOO 

6,120 

3,130 

776 

840

6,120

June

4,180 

4,910 

5,200 

4,000 

4,000

5,460 

5,860 

4,890 

4,060 

4,410

5,260 

5.9SO 

5,790 

5,730 

5,630

5,840 

6,120 

5,950 

5,OOO 

4,360

4,380 

4,470 

3,630 

3,940 

4,180

3,810 

3,710 

3,530 

3,450 

3,270

July

3,130 

33,080 

a3,000 

32,940 

32,860

a2,790 

a2,710 

2,680 

2,500 

2,330

2,450 

2,310 

2,070 

1,830 

1,680

1,610 

1,490 

1,580 

1,460 

1,340

1,260 

1,230 

1,130 

1,07O 

1,010

98O 

930 

93O 

900 

870 

321

Aug.

767 

749 

724 

724 

684

684 

716 

692 

776 

637

637 

660 

639 

604 

584

560 

536- 

513 

494 

432

47O 

458 

446 

428 

440

446 

446 

428 

428 

416 

422

Minimum Mean

584 670 

47O 542 

350 429

280 1,337

300 367 

315 363 

302 363 

370 851 

900 1,996 

3,270 4,702 

821 1,339 

416 571 

360 536

300 1,102

) 6,760 sec. -ft.; June 12 (6 a.m.

Sept.

410 

385 

375 

370 

360

370 

365 

365 

380 

395

410 

500 

584 

618 

590

573 

566 

560 

584 

840

785 

716 

676 

653 

646

639 

625 

597 

578 

548

Runoff 'In 

acre-feet

41,180 

32,230 

26,400

963,000

22,590 

20,150 

22,300 

50,630 

122,700 

279,800 

113, 100 

35, 100 

31,870

798,000

) 6,960

» Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of recorded range in stage, weather records, 

and records for nearby stations.

b Stage-discharge relation affected by Ice.
106 TRIBUTARIES ABOVE GUNNISON RIVER 

Hunter Creek near Aspen, Colo.

Location.--Water-stage recorder, lat. 39°12', long. 106°48', in SW£ sec. 5, T. 10 S., R. 84 

W. ,|bO feet upstream from head gate of Red Mountain ditch, 100 feet upstream from road 

bridge, Ij miles upstream from mouth, and If miles northeast of Aspen.

Drainage area. 40 square miles,

Records available. June to September 1950.

Extremes. Maximum discharge during period, 592 second-feet June 6 (gage height, 6.22

i'eet), from rating curve extended above 320 second-feet by velocity area studies; minimum daily, 6.7 second-feet Sept. 6.

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

several small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 '.5

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Octo 

Hove 

Dece

Ca

janu 

Pebr 

Hare 

Aprl 

May

June 

July 

Augu 

Sept

Th

lendar year

Mar. Apr.

Secondfoot-days

7,574 

1,266 

347.3 

441.5

-

May

Maximum

432 

108 

20 

28

-

June

320 

360 

330 

300 

340

432 

372 

281 

268 

312

366 

352 

321 

301 

296

304 

301 

247 

200 

185

188 

164 

147 

159 

150

128 

128 

119 

108 

95

July

Minimum

95 

14 

7.4 

6.7

-

82 

74 

74 

62 

58

54 

55 

57 

49 

57

108 

50 

42 

36 

34

32 

31 

40 

31 

27

25 

23 

22 

21 

20

19 

18 

18 

17 

16 

14

Aug.

13 

13 

13 

13 

12

14 

20 

16 

14 

13

13 

15 

13 

12 

11

11 

11 

9.8 

9.5 

9,0

9.0 

9.0 

8.6 

8.6 

9.0

10 

7.8 

7.4 

7.6 

7.6 

7.4

Mean

252 

40.8 

11.2 

14.7

-

Sept.

7.6 

7.4 

7.2 

7.0 

6.8

6.7 

8.6 

8.4 

9.8 

12

12 

23 

28 

26 

22

19 

18 

17 

17 

26

23 

21 

19 

16 

15

13 

12 

11 

11 

11

Runoff In 

acre -feet

15,020 

2,510 

689 

876

19,100

ft" Peak discharge fbaae, 450 sec.-ft.).--June 6 (9 p.m.) 592 sec.-ft.; June 11 3:3O p.m.J 585 sec.-

Note. No gage-height record June 1-5, July 14 to Aug. 1; discharge computed on basis of discharge 

measurement made on July 15, weather records, and records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISON RIVER 107

Fryingpan Creek at Norrie, Colo.

Location.--Water-stage recorder, lat. 39°20', long. 106°40', in NE£ sec. 28, T 8 S R 83 

« . 300 feet south of State Highway 104 at Norrie, 1 mile upstream from North Pork, and 

2 miles downstream from Chapman Gulch.

Drainage area.--89.5 square miles.

Records available. October 1910 to March 1917, October 1947 to September 1950.

Extremes. Maximum discharge during year, 1,070 second-feet June 11 (gage height, 4.74 feet), 

from"rating curve extended above 910 second-feet; minimum daily, 17 second-feet Feb. 9,

1910-17, 1947-50: Maximum discharge observed, 1,440 second-feet June 25, 26, 1912 

(gage height, 6.40 feet, site and datum then in use), from rating curve extended above 

730 second-feet; minimum not determined, occurred during period of no gage-height record.

Remarks.--Records good except those for periods of ice effect, which are fair. Transmountain diversion above station through Busk-Ivanhoe tunnel (see p. 27).

Revisions.--W 1119: Drainage area.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

57 

54 

47 

42 

41

40 

37 

35 

53 

46

45 

43 

55 

60 

56

53 

55 

61 

57 

50

46 

45 

47 

44 

42

42 

40 

39 

39 

38 

38

Nov.

41 

38 

38 

36 

37

35 

35 

36 

37 

36

»36 

34 

34 

36 

35

34 

33 

33 

33 

32

30 

31 

31 

31 

30

30 

29 

28 

26 

28

Dec.

27 

26 

26 

*25 

24

24 

24 

24 

24 

24

24 

24 

24 

23 

23

23 

24 

24 

24 

24

22 

21 

24 

21 

21

21 

21 

21 

21 

21 

20

Jan.

21 

21 

21

21 

21

20 

20 

20 

20 

20

20 

 20 

20 

20 

20

20 

19 

20 

20 

19

19 

19 

19 

20 

20

20 

20 

20 

20 

20 

20

Feb.

19 

19 

19 

18 

18

18 

18 

18 

*17 

17

18 

18 

18 

18 

18

18 

18 

18 

18 

18

18 

18 

18 

18 

18

18 

18 

19

Month

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949 

apy

ter year 1949-50 .......................

Mar.

19 

20 

20 

20 

20

20 

20 

20 

20 

 20

20 

20 

20 

20 

20

20 

20

21 

21 

21

21 

21 

20 

20 

19

20 

19 

21 

20 

20 

19

Apr.

20 

21 

21 

21 

22

24 

29

33 

34 

32

31 

33 

*40 

47 

57

49 

57 

75 

70 

78

101 

122 

139 

119 

90

85 

85 

103 

115 

95

Secondfoot-days

1,447 

1,005 

719

51,419

620 

506 

622 

1,848 

8,822 

17,147 

4,322 

1,370 

1,204

39,632

May

98

134 

179 

192 

141

122 

120 

127 

122 

119

150 

177 

182 

206 

258

289 

404 

418 

346 

359

454 

575 

665 

650 

490

332 

258 

218 

206 

281 

550

Maximum

61 

41 

27

900

21 

19 

21 

139 

665 

815 

258 

75 

68

815

Peak discharge (base. 760 see. -ft.). May 23 (9 p.m.) 845 sec. -ft.

June

745 

810 

740 

508 

625

810 

815 

640 

565 

680

795 

780 

720 

700 

680

690 

705 

615 

508 

454

462 

408 

354 

390 

377

346 

332 

323 

297 

273

July

258 

237 

230 

218 

209

190 

182 

179 

167 

177

240 

163 

145 

134 

122

119 

117 

147 

124 

109

99 

93 

87 

82 

79

75 

74 

74 

68 

64 

60

Minimum

35 

28 

20

13

19 

17 

19 

20 

98 

273 

60 

29 

26

17

Aug.

56 

54 

53 

54 

50

56 

75 

61 

52 

47

52 

60 

53 

48 

44

42 

42 

37 

36 

36.

34 

33 

32 

32 

33

39 

36 

32 

32 

30 

29

Mean

46.7

33.5 

23.2

141

20.0 

18.1 

20.1 

61.6 

285 

572 

139 

44.2 

40.1

109

Sept.

28 

28 

26 

26 

26

26 

28 

27 

32 

35

36 

56 

68 

61 

55

48 

44 

43 

44 

68

55 

52 

44 

42 

42

38 

34 

31 

31 

30

Runoff In 

acre-feet

2,870 

1,990 

1,430

102,000

1,230 

1,000 

1,230 

3,670 

17,500 

34,010 

8,570 

2,720 

2,390

78,610

; June 6 (10 p.m.) 1,040 sec. -ft.

June 11 (10 p.m.) 1,070 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 13, Nov. 17 to Dec. 8, Dec. 11-22, Feb. 1 to 

Mar. i, Apr. 2-15.
108 TRIBUTARIES ABOVE GUNNISON RIVER

North Fork Fryingpan Creek near Norrie, Colo.

Location.--Water-stage recorder, lat. 39°21', long. 106°40', in N| sec. 21, T. 8 S., R. 83 

W., 1,000 feet upstream from bridge on State Highway 104, a quarter of a mile upstream 

from mouth, half a mile downstream from Last Chance Creek, and 1 mile northwest of 

Norrie. Prior to Oct. 1, 1949, at datum 2.00 feet higher.

Drainage area. 41.2 square miles.

Records avaialble.--October 1910 to March 1917, October 1947 to September 1950.

Extremes. Maximum discharge during year, 459 second-feet June 12 (gage height, 4.36 feet); 

minimum daily, 0.7 second-foot Sept. 5, 6.

1910-17, 1947-50: Maximum discharge, 625 second-feet June 12, 1949; maximum gage 

height, 5.80 feet May 21, 1948; minimum daily discharge, that of Sept. 5, 6, 1950.

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

which are fair. One small diversion above station.

Revisions. W 1119: Drainage area.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

12 

10 

9.2 

7.8 

6.8

6.5 

5.6 

4.6 

7.8 

8.5

9.0 

*9.0 

12 

13 

13

12 

13 

15 

16 

14

12 

20 

16 

14 

12

11 

10 

9.5 

8.8 

10 

10

Nov.

11 

10 

9.8 

9.5 

9.2

9.0 

8.7 

8.6 

8.4 

8.2

*7.8 

7.5 

7.4 

7.6 

7.4

7.3 

7.1 

7.0 

6.9 

6.8

6.6 

6.4 

6.4 

6.2 

6.0

.5.7 

5.3 

4.8 

4.4 

4.3

Dec.

4.2 

4.3 

4.3 

*4.3 

4.5

4.7 

4.9 

5.0 

5.2 

5.0

4.8 

4.5 

4.2 

3.8 

3.6

3.7 

4.0 

4.1 

4.1 

4.1

3.9 

3.6 

3.6 

3.7 

3.6

3.6 

3.7 

3.7 

3.7 

3.6 

3.7

Jan.

3.7 

3.7 

3.5 

3.3 

3.1

2.9 

2.9 

2.9 

2.9 

2.9

2.9 

*3.0 

3.0 

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 

3.1 

3.2 

3.2 

3.2 

3.1

Feb.

3.1 

3.0 

3.0 

3.1 

3.2

3.2 

3.2 

3.2 

*3.2 

3.2

3.2 

3.2 

3.2 

3.1 

3.1

3.1 

3.1 

3.1 

3.0 

3.0

3.0 

3.0 

3.1 

3.1 

3.1

3.2 

3.2 

3.2

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 1949 ..... ... ...

h. ......................................

ter year 1949-5O .......................

Mar.

3.2 

3.1 

3.1 

3.2 

3.2

3.1 

3.0 

2.9 

2.9 

*3.0

2.9 

2.9 

2.9 

3.1 

3.2

3.2 

3.2 

3.2 

3.2 

3.3

3.3 

3.3 

3.3 

3.3 

3.3

3.3 

3.2 

3.2 

3.3 

3.4 

3.7

Apr.

5.6 

7.5 

10 

9.5 

9.0

10 

12 

16 

29 

27

26 

26 

*30 

39 

37

25 

24 

34 

37 

41

58 

69 

76 

64 

51

34 

32 

36 

43 

36

Secondfoot-days

338.1 

221.3 

127.7

21,039.7

97.5 

87.4 

98.4 

953.6 

3.4OO 

6,921 

1,333 

154.0 

149.7

13,881.7

May

39 

62 

101 

110 

71

54 

43 

39 

36 

35

51 

76 

78 

91 

116

125 

168 

174 

135 

138

174 

195 

210 

214 

174

128 

103 

85 

80 

103 

192

Maximum

20 

11 

5.2

502

3.7 

3.2 

3.7 

76 

214 

343 

99 

11 

13

343

June

252 

276 

287 

256 

276

343 

312 

252 

224 

252

280 

315 

301 

280 

287

280 

284 

252 

217 

198

198 

180 

156 

162 

165

142 

138 

128 

118 

110

July

99 

87 

81 

73 

73

66 

64 

63 

60 

56

54 

49 

43 

37 

33

33 

32 

50 

40 

.32

26 

24 

22 

20 

19

17 

17 

17 

17 

16 

13

Minimum

4.6 

4.3 

3.6

-

2.9 

3.Q 

2.9 

5.6 

35 

110 

13 

1.4 

.7

.7

Aug.

11 

10 

10 

11 

9.0

9.6 

11 

8.3 

6.4 

4.6

5.5 

7.6 

6.4 

5.2 

4.2

3.9 

3.0 

2.5 

2.3 

2.2

2.0 

1.8 

1.7 

2.0 

1.8

2.2 

2.2 

1.8 

1.8 

1.6 

1.4

Mean

10.9 

7.38 

4.12

57.6

3.15 

3.12 

3.17 

31.8 

110 

231 

43.0 

4.97 

4.99

38.0

Sept.

1.3 

1.3 

1.1 

.8 

.7

.7 

.9 

.9 

1.2 

1.3

1.6 

7.6 

12 

11 

8.6

6.1 

4.3 

3.9 

4.2 

13

13 

11 

8.3 

7.0 

6.7

5.2 

4.3 

4.2 

3.9 

3.6

Runoff In 

acre-feet

671 

439 

253

41,730

193 

173 

195 

1,890 

6,740 

13,730 

2,640 

305 

297

27,530

Peak discharge (base. 420 sec.-ft.). June 6 (10:3O p.m.) 443 sec.-ft.; June 12 (1O:3O p.m.) 459 

sec,-ft.

* Winter discharge measurement- made on this day.

Mote. Stage-discharge relation affected by ice Oct. 31 to Nov. 9, Hbv. 12-28, 30, Dec. 2-8, Apr. 

13, 14. Mo gage-height record Dec. 9 to Apr. 12 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 3 discharge measurements, weather records, and 

records for nearby stations.
TRIBUTARIES ABOVE GDNNISON RIVER 109

Lime Creek at Troutville, Colo.

Location. Water-stage recorder, lat. 39°25', Iqng. 106°38', In sec. 22, T. 7S., R. 83 W.

 a quarter of a mile downstream from Woods Lake and three-quarters of a mile west of 

Troutville. Prior to July 31, 1950, staff gage at site 20 feet upstream at same datum.

Drainage area. 8.4 "square miles.

Hecords available. June to September 1950.

Extremes. Maximum discharge observed during period, 114 second-feet June 12 (gage height, 

5.42 feet); minimum daily, 2.3 second-feet Sept. 30.

Remarks. Records good above 5 second-feet and fair below. Staff gage read twice daily

 June 7 to July 30. Flow slightly regulated by several small lakes above station. No 

diversion above station.

Discharge, In second-feet, June to September 195O

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

June

a60

a9O

alOO

a70

a75

alOO

106

95

54

62

93

106

98

95

96

July

44

38

35

32

31

31

33

31

33

30

32

30

29

24

21

Aug.

10

9.1

8.2

7.7

7.2

6.7

6.7

6.3

5,5

5.1

5.5

5.S

5.5

5.1

5.1

Sept.

2

3

3

3

3

3

2

2

2

2

3

4

4

4

4

Month Secondfoot-days

June......... 2,250

July......... 692.7

August....... 152.6

September.... 1O1.4

Ttu? period. -

.4

.1

.1

.1

.1

.1

.7

.4

.4

.7

.1

.4

.4

.4

.1

Day

16

17

IS

id

20

21

22

23

24

25

26

27

28

29

30

31

lfe.Tl.nim

1O6

44

10

4.S

-

June

92

98

98

77

6O

57

59

50

54

6O

56

50

50

46

43

-

July

20

17

IS

21

IS

17

16

16

14

13

10

6.3

5.1

S.2

9.1

10

Aug.

4.8

4.1

4.1

4.1

3.4

3.8

3.1

2.7

2.4

2.4

2.7

3.1

3.1

3.1

3.1

3.1

Sept.

3.4

3.1

3.1

3.4

4.S

4.1

4.1

4.1

4.1

4.1

3.S

3.4

2.7

2.4

2.3

-

 a^!fe£

43 75 .0 4,460

5.1 22.3 1,37O

2.4 4.92 303

2.3 3.38 201

6,330

Peak discharge (base. 1OO sec. -ft.). ,

sec. -ft. i June 12 (7 p.m.

a No gage-height record

) 114 sec.-ft.

Tune 7 (11 a.m.) 1O6

; discharge computed on basis of

records for station at Thomasvllle.

Lime Creek at Thomasvllle, Colo.

S., R. 83 W., 

miles downLocation. Water-stage recorder, lat. 39°21', long. 106°41', in sec. 18, T.

150 reet upstream from mouth, half a mile southeast of Thomasvllle, and

stream from Spring Creek. 

Drainage area. 32 square miles. 

Kecoras available. June to September 1950. 

Extremes. Maximum discharge during period, 202 second-feet June 7 (gage height, 5.10 feet);

minimum daily, 9.9 second-feet Sept. 6-10. 

Remarks. Records good. Small diversions above station.

Discharge, In second-feet, June to September 195O

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

June

126

161

173

135

136

1S2

187

158

119

121

140

172

158

150

148

July

63

60

56

55

52

52

52

54

54

51

48

48

45

43

39

Month

August......

September...

Ttie period

Aug.

22

21

20

20

19

19

IS

la

IS

17

17

17

16

IS

15

Secondfoot-days

3,727

1,232

453

36S.5

-

Sept.

11

10

10

10

10

9.9

9.9

9.9

9.9

9.9

10

14

14

14

13

Day

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30

31

Maximum

1S7

63

22

16

-

June

143

152

143

117

1O3

95

94

85

77

83

82

77

74

7O

66

-

Minimum

66

IS

1O

9.9

-

July

38

38

36

37

35

32

30

30

28

26

24

20

IS

22

24

24

Aug.

12

12

12

11

11

11

11

11

1O

11

11

12

12

11

11

11

Mean

124

39.7

14.6

12.3

-

Sept.

12

12

12

13

16

15

15

15

15

15

14

14

12

12

U

-

Runoff in 

acre-feet

7,390

2,440

S99

731

11,460

Peak discharge (base. 17O sec.-ft.). June 3 (9 a.m.) 1S2 

sec.-ft.| June 7 (7 a.m.] 2O2 sec.-ft.; June 12 (9 a.m.) 185

sec.-ft. nj»«» ft-
110 TRIBUTARIES ABOVE GUMISON RIVER

Crystal River near Redstone, Colo.

location. Water-stage recorder, lat. 39°19', long. 107°13', in Sw£ sec. 34, T. 8 S., R. 

8« w., 1? miles upstream from Thompson Creek, 8 miles dovmstream from Redstone'.

Drainage area. 225 square miles.

Records available. May 1935 to September 1950. 1908-9 at site 2 miles dovmstream; records 

not equivalent.

Average discharge. 15 years, 371 second-feet.

Extremes. Maximum discharge during year, 3,090 second-feet June 17 (gage height, 7.55

reetj, from rating curve extended above 2,500 second-feet; minimum daily, 48 second-feet 

Sept. 6, 7.

1935-50: Maximum discharge, 4,400 second-feet June 21, 1938 (gage height, about 8.5 

feet, from floodmark, present site and datum), from rating curve extended above 2,400 

second-feet; minimum observed, 32 second-feet Jan. 19, 1943 (discharge measurement).

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

which are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

110 

99 

90 

86 

85

86 

83 8-1 

88 

94

99

103 

103 

101 

97

94 

99

128 

128 

122

122 

105 

112 

117 

120

122 

115 

112 

108 

108 

112

Nov.

122 

115 

105 

110 

115

112 

103 

103 

105 

101

105 

94 

99 

103 

103

101 

101 

101 

101 

99

94 

92 

92 

94 

92

90 

90 

90 

88 

88

Dec.

86 

85 

86 

81 

*79

83 

81 

81 

81 

85

83 

83 

72 

64 

76

94

85 

86 

86 

85

79 

76 

82

81 

82

80 

84 

82 

78 

79 

79

Jan.

81 

79 

70 

72 

70

71 

71 

74 

74 

66

66 

68 

*68 

' 68 

63

68 

70 

70 

a68 

a68

69 

69 

69 

74 

74

76 

70 

76 

79 

79 

70

'Feb.

64 

62 

64 

66 

70

76

81 

72 

56 

53

*76 

74 

67 

69 

66

64 

70 

67 

67 

70

72 

59 

69 

66 

66

69 

72 

76

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

MA v

June 

July 

Augu 

Sept

Wa

lendar year 194

ter year 1949-50 .......................

Mar.

69 

69 

66 

67 

70

76 

67 

61 

70 

67

66 

64 

50 

66 

66

61 

66 

70 

64 

70

66 

66 

66 

69 

69

69 

66 

61 

61 

64 

62

Apr.

69 

86 

101 

88 

86

103 

97 

167 

170 

144

133 

144 

188 

235 

226

186 

208 

275 

285 

250

275 

346 

379 

300 

226

212 

204 

204 

199 

183

Secondfoot-days

3,229 

3,008 

2,524

132,260

2,210 

1,903 

2,044 

5,769 

17,322 

59,030 

20,651 

3,624 

2,513

123,827

Peak discharge (base. 2,000 sec. -f t. ). --June 6 (11 p.m

May

165 

226 

320 

478 

368

310 

265 

212 

186 

166

186 

275 

335 

352 

456

494 

634 

666 

642 

722

837 

1,020 

1,080 

1,240 

1,200

864 

690 

602 

549 

682 

1,100

Maximum

128 

122 

94

3,580

81 

81 

76 

379 

1,240 

2,570 

1,410 

226 

260

2,570

June

1,580 

2,000 

2,010 

1,620 

1,740

2,270 

2,110 

1,710 

1,590 

1,790

2,120 

2,330 

2,280 

2,300 

2,360

2,500 

2,570 

2,460 

2,110 

1,880

1,980 

1,870 

1,590 

1,880 

1,980

1,780 

1,750 

1,710 

1,630 

1,530

July

1,410 

1,320 

1,170 

1,000 

960

920 

960 

1,130 

1,020 

920

920 

819 

 738 

658 

570

556 

535 

542 

462 

434

418 

412 

390 

352 

315

310 

305 

305 

280 

270 

250

Minimum

81 

88 

64

44

63 

53 

50 

69 

165 

1,530 

250 

62 

48

48

Aug.

226 

212 

199 

180 

162

166 

155 

149 

143

133

149 

149 

124 

114 

112

105 

1OO 

89 

87 

82

78 

76 

75 

73 

72

80 

75 

68 

65 

64 

62

Mean

104 

100 

81.4

362

71.3 

68.0 

65.9 

192 

559 

1,968 

666 

117 

83.8

339

) 2,690 sec. -ft.; June 17 (11:30

Sept.

59 

56 

54 

54 

49

48 

48 

49 

52 

61

65 

89 

93 

91 

75

70 

67 

67 

105 

260

169 

150 

119 

105 

98

85 

76 

72 

65 

62

Runoff In 

acre -feet

6,400 

5,970 

5,010

262,300

4,380 

3,770 

4,050 

11,440 

34,360 

117,100 

40,960 

7,190 

4,980

245,600

p.m.) 3,09C

sec.-ft.; June 24 (11:3O p.m.} 2,380 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for stations on 

nearby streams.

Note. Stage-discharge relation affected by Ice Dec. 17, 23-30, Jan. 1-18, 28, 29, Feb. 1-5.
TRIBUTARIES ABOVE GUNNISON RIVER 111

Parachute Creek near Grand Valley, Colo.

Location.--Water-stage recorder, lat. 39°34'30", long. 108°06'35", in NE£ sec. 36, T. 5 

S., K. 96 W., 0.1 mile downstream from confluence of West Fork and East Fork, and 9 

miles north of Grand Valley.

Drainage area.--144 square miles.

Records available. October 1948 to September 1950.

Extremes.--Maximum discharge during year, 148 second-feet May 14 (gage height, 3.27 feet); 

minimum daily, 2.8 second-feet Oct. 31.

1945-50: Maximum discharge, 318 second-feet May 4, 1949 (gage height, 3.62 feet); 

no flow Dec. 2, 1948 (field observation).

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

whicn are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

 5

26 

2T 

28 

29 

30 

31

Oct.

6.7 

6.7 

6.4 

6.7 

6.7

6.4 

6.1 

6.9 

7.2 

6.1

5.4 

5.4 

5.1 

4.8 

4.8

4.8 

4.8 

5.4 

5.6 

4.8

4.3 

4.3 

4.3 

4.3 

4.3

4.1 

4.1 

3.2 

3.0 

3.2 

2.8

Nov.

3.4 

5.1 

4.3 

4.6 

4.8

4.6 

4.6 

4.6 

5.1 

5.9

5.4 

3.5 

3.7 

3.8 

5.1

4.6 

4.6 

4.6 

4.8 

4.8

4.3 

4.3 

3.7 

4.8 

4.3

4.8 

4.6 

4.3 

4.3 

3.7

Dec.

3.8 

3.3 

3.5 

3.2 

*3.2

3.3 

3.4 

3.3 

3.5 

3.8

3.3 

2.9 

3.0 

3.0 

3.0

3.1 

3'. 2 

3.3 

3.4 

3.3

3.0 

3.2 

3.1 

3.1 

3.1

3.1 

3.3 

3.5 

3.6 

3.7 

3.7

Jan.

3.7 

3.8 

3.6 

3.5 

*3.4

3.4 

3.4 

3.3 

3.3 

3.2

3.3 

3.3 

3.3 

3.4

3.6

3.6 

3.4 

3.4 

3.6 

4.0

4.0 

3.9 

3.9 

3.8 

3.8

3.8 

3.6 

3.7 

3.9 

3.8 

*b3.8

-Feb.

b3.8 

b3.5 

b3.2 

b3.5 

b3.7

b4.0 

b4.4 

b4.4 

b4.1 

b4.0

4.8 

4.6 

bS.l 

4.8 

4.8

5.1 

5.4 

5.4 

5.6 

6.1

5.9 

5.9 

5.9 

6.1 

6.4

6.4 

7.2 

7.2

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

mber. ...................................

lendar year 1949

1..... ..................................

ter year 1949-50 .......................

Mar.

6.4 

*6.9 

7.2 

7.4 

7.4

7.4 

6.7 

6.7 

7.4 

7.4

7.4 

7.2 

8.5 

7.4 

7.4

7.4 

8.0 

8.0 

7.4 

8.0

7.7 

8.0 

8.0 

8.2 

8.2

8.2 

7.4 

7.4 

7.2 

7.2 

8.0

Apr.

8.5 

9.4 

9.4 

7.7 

8.2

12 

17 

28 

20 

18

18 

22 

25 

27 

30

28 

42 

51 

73 

83

88 

121 

115 

109 

111

105 

105 

103 

94 

75

Secondfoot-days

158.7 

135.0 

102.2

10,493.5

111.5 

141.3 

233.1 

1,563.2 

3,156 

862 

315.7 

201.4 

163.5

7,143.6

May

73 

78 

83 

101 

94

94 

92 

83 

78 

77

80 

90 

109 

131 

140

135 

135 

138 

128 

119

128 

131 

121 

115 

107

96 

88 

85 

80 

77 

70

Maximum

7.2 

5.9 

3.8

296

4.0 

7.2 

8.5 

121 

140 

67 

21 

7.4 

8.0

140

June

67 

64 

62 

56 

43

39 

36 

32 

34 

33

30 

26 

27 

28 

25

25 

23 

25 

22 

20

14 

14 

16 

15 

16

16 

16 

14 

12 

12

July

13 

13 

12 

11 

9.8

8.7 

8.5 

11 

9.4 

11

14 

21 

13 

12 

11

11 

10 

9.8 

9.0 

9.0

8.2 

7.7 

7.7 

8.7 

8.5

8.5 

8.2 

8.2 

7.7 

7.4 

7.7

Aug.

7.4 

6.9 

7.4 

7.2 

7.4

6.4 

6.7 

7.4 

7.2 

7.4

6.7 

6.4 

5.9 

6.1 

6.1

6.1 

6.7 

6.9 

7.2 

6.1

6.1 

5.9 

5.6 

5.6 

5.1

6.7 

6.7 

6.4 

6.4 

5.9 

5.4

Minimum Mean

2.8 5.12 

3.4 4.50 

2.9 3.30

28.7

3.2 3.60 

3.2 5.05 

6.4 7.52 

7.7 52.1 

70 102 

12 28.7 

7.4 10.2 

5.1 6.50 

4.6 5.45

2.8 19.6

Sept.

5.4 

4.8 

4.6 

4.6 

4.6

5.6 

5.9 

5.4 

5.4 

5.4

5.1 

4.8 

4.8 

4.8 

4.6

4.6 

4.6 

4.6 

8.0 

7.4

6.1 

5.6 

5.9 

5.9 

6.1

6.1 

5.9 

5.9 

5.6 

5.4

Runoff in 

acre-feet

315 

268 

203

20,800

221 

280 

462 

3,100 

6,260 

1,710 

626 

399 

324

14,170

Peak discharge (base, 150 sec. -ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 14 to Jan. 30 (stage-discharge relation affected by ice during 

part of period), July 12-15; discharge computed on basis of 1 discharge measurement, weather records, 

and records for station at Grand Valley.
112 TRIBUTARIES ABOVE GuTflilSON RIVER

Parachute Creek at Grand Valley, Colo.

Location. Water-stage recorder, lat. 390 27'10n , long. 108°03'30", in NWi sec. 12, T. 7 S., 

K. 96 W., at western edge of Grand Valley, half a mile upstream from bridge on U. S. 

Highways 6 and 24 and if miles upstream from mouth.

Drainage area. 200 square miles.

Records available. April 1921 to September 1927, October 1948 to September 1950.

Extremes. Maximum discharge during year, 139 second-feet May 19 (gage height, 2.66 feet); 

minimum daily, 0.2 second-foot Aug. 26, 27.

1921-27, 1948-50: Maximum discharge observed, 790 second-feet May 9, 1922 (gage 

height, 3.0 feet, site and datum then in use); no flow for short periods in 1926, 1927, 

1949.

Remarks. Records fair except those for periods of ice effect, which are poor. Diversions 

above station for irrigation.

Revisions. V 1179: Drainage area.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9.0 

9.3 

9.9 

12 

12

12 

11 

12 

16 

16

15 

14 

14 

12 

13

14 

14

13 

15 

14

15 

15 

16

16 

16'

16 

15 

14 

13 

13 

12

Nov.

12 

13 

14 

13 

13

13 

13 

12 

13 

15

15 

14 

14 

14 

14

14 

14 

15 

15 

14

14 

14 

14

14 

14

15 

16 

15 

15 

15

Dec.

15 

14 

14 

14 

 14

14 

14 

14 

14 

14

14 

14 

13 

13 

13

13 

13 

13 

13 

13

12 

13 

12 

12 

12

12 

12 

13 

13 

12 

13

Jan.

13 

b!6 

15 

b!2 

«14

b!3 

bll 

bll 

12 

i2

b!2 

13 

13 

13

b!4

b!4 

13 

13 

14 

14

14 

13 

b!4 

b!5 

15

b!4 

b!3 

b!3 

13 

13 

*13

Feb.'

14 

b!3 

b!3 

14 

15

15 

20 

18 

16 

15

15

15 

15 

15 

16

18 

20

20 

21

21

20 

18 

18 

20 

20

20 

21 

24

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

mber. ...................................

lendar year 1949

ember ...................................

ter year 1949-50 .......................

Mar.

19 

 18 

18 

18 

18

IS 

18 

18 

18 

18

18 

18 

15 

16 

16

16 

16

16 

16

16

16 

16 

16 

16 

17

17 

16 

16 

16 

17 

18

Apr.

18 

19 

20 

19 

19

20 

22 

34 

46 

35

31 

28 

32 

34 

38

33 

37 

44 

45 

44

51 

47 

60 

70 

65

68 

63 

64 

61 

60

Secondfoot-days

418.2 

420 

409

12,688.8

412 

490 

525 

1,227 

2,711 

615.3 

214.2 

56.1 

139.0

7,636.8

May

58 

58

61 

77 

78

80 

77 

71 

64 

60

58

61 

70 

82 

96

103 

120 

130 

128 

118

115 

111 

113 

108 

100

98 

90 

94 

83 

78 

71

Maximum

16 

16

15

270

16 

24 

19 

70 

130 

68 

47 

3.8 

19

130

June

68 

61 

57 

54 

48

37 

26 

21 

22 

21

19 

18 

17 

14 

14

11 

11 

9.9 

10 

9.6

8.5 

7.8 

7.2 

6.8 

6.5

6.2 

6.2 

6.2 

5.9 

5.5

July

4.4

2.7 

2.2 

1.6 

1.6

1.6 

1.6 

3.2 

2.7 

6.2

47 

25 

19 

14 

12

9.2 

5.9 

6.5 

4.9 

4.6

4.6 

3.5 

2.4 

2.4 

3.0

3.0 

3.8 

4.4 

4.4 

3.8 

3.0

Aug.

3.5 

3.8 

2.7 

2.4 

2.4

2.4 

2.2 

2.2 

2.1 

1.8

1.9 

1.4 

.8 

1.1 

2.2

3.2 

1.4 

1.9 2.4' 

2.4

2.4 

4.1 

2.1 

.6 

.5

.2 

.2 

.3 

.4 

.5 

.6

Minimum Mean

9.0 13.5 

12 14.0 

12 13.2

0 34.8

11 13.3 

13 17.5 

15 16.9 

18 40.9 

58 87.5 

5.5 20.5 

1.6 6.91 

.2 1.81 

.4 4.63

.2 20.9

Sept.

0.6 

.4

.4 

.4 

.6

1.1 

1.8 

2.7 

3.8 

3.5

2.2 

l.S 

1.0 

.8 

.5

.5 

.5 

.5 

2.7 

19

11 

9.2 

8.8 

8.8 

9.2

10 

10 

9.2 

8.8 

9.2

Runoff in 

acre-feet

829 

833 

811

25,170

817 

972 

1,040 

2,430 

5,380 

1,220 

425 

111 

276

15,140

Peak discharge (base, 2OO sec. -ft.). Ho peak- above base.

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
TRIBUTARIES ABOVE GUMISON RIVER 113

Plateau Creek near Collbran, Colo.

Location.--Water-stage recorder, lat. 39°15', long. 107°SO' , in NE-£ sec. 26, T. 9 S., R. 

sk w., l| miles downstream from Leon Creek and 6 miles (revised) east of Collbran.

 

Drainage area. 88 square miles.

Records available. August 1921 to September 1927 (monthly discharge) and October 1933 to 

September J.95U in reports of Geological Survey. August 1921 to September 1950 in reports of State engineer.

Average discharge. 29 years.(1921-50), 99.1 second-feet.

Extremes. Maximum discharge during year, 1,270 second-feet May 31 (gage height, 4.84 

reet); minimum daily, 7.5 second-feet Sept. 6.

1921-50: Maximum discharge, 2,800 second-feet May 28, 1922 (gage height, 6.72 feet, 

site and datum then in use), from rating curve extended above 1,300 second-feet; minimum dally, 3 second-feet Sept. 21, 1926.

Remarks. Records good except those for periods of ice effect, which are fair. Five small 

diversions above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

6 

7 

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.

17 

14 

13 

12 

11

12 

12 

11 

13 

15

15 

16 

20 

24 

21

18 

17 

26 

22 

16

18 

18 

19 

16 

14

14 

13 

12 

12 

12 

12

Nov.

*15 

13 

12 

12 

11

11 

11 

12 

12 

12

11 

11 

11 

12 

12

12 

11 

11 

11 

11

11 

11 

11 

12 

11

11 

11 

11 

10 

10

Dec.

11 

10 

11 

9.6 

10

*11 

12 

11 

12 

11

10 

9.8 

9.6 

9.2 

9.0

9.8 

10 

11 

11 

10

9.8 

9.6 

10 

9.6 

9.2

10 

14 

14 

13 

13 

13

Jan.

13 

13 

14 

13 

13

13 

13 

14 

14 

 14

13 

13 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

13 

14 

14

14 

13 

13 

13 

13 

13

Feb.

13 

13 

13 

13 

13

13 

 13 

13 

13 

13

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

13 

13

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

1.......................................

ter year 1949-5O .......................

Mar.

13 

13 

13 

13 

13

14 

13 

 14 

14 

14

14 

13 

13 

13 

13

13 

14 

14 

13 

14

14 

13 

13 

14 

14

14 

13 

12 

12 

13 

13

Apr.

16 

19 

23 

22 

*25

20 

31 

54 

48 

34

28 

27 

33 

41 

35

31 

34 

43 

43 

48

65 

85 

98 

104 

90

104

125 

129 

119 

90

Secondfoot-days

485 

343 

333.2

31,668.7

410 

348 

413 

1,664 

1O.617 

11,580 

1,391 

488.7 

434.7

28,507.6

May

80 

95 

145 

162 

125

98 

82 

75 

61 

58

68 

101 

129 

152 

218

265 

350 

402 

434 

506

554 

651 

66O 

660 

579

483 

522 

597 

615 

732 

958

Maximum

26 

15 

14

664

14 

13 

14 

129 

958 

958 

119 

25 

53

958

June

958 

850 

705 

588 

669

741 

678 

483 

441 

469

498 

476 

420 

360 

335

325 

310 

261 

214 

194

204 

204 

194 

194 

186

155 

138 

122 

110 

98

July

85 

75 

68 

SO 

53

46 

47 

113 

87 

80

119 

6O 

42 

38 

35

31 

29 

42 

46 

32

26 

23 

2O 

19 

19

17 

16 

16 

16 

15 

14

Minimum

11 

10 

9.0

8.5

13 

12 

12 

16 

58 

98 

14 

8.9 

7.5

7.5

Aug.

19 

22 

22 

21 

2O

23 

23 

19 

16 

19

25 

20 

17 

15 

16

17 

16 

15 

14 

13

13 

13 

10 

1O 

11

11 

11 

10 

9.6 

9.2 

8.9

Mean

15.6 

11.4 

1O.7

86.8

13.2 

12.4 

13.3 

55.5 

342 

386 

44.9 

15.8 

14.5

78.1

Sept.

8.6 

8.2 

7.8 

7.8 

7.8

7,5 

10 

14 

13 

14

11 

16 

16 

16 

12

11 

10 

13 

26 

53

27 

17 

15 

16 

17

14 

13 

12 

11 

1O

Runoff In 

acre-feet

962 

68O 

661

62,810

813 

690 

819 

3,3OO 

21,O6O 

22,970 

2,760 

969 

862

56,550

Peak discharge (base, 83O sec. -ft.). May 31 (7 p.m.) 1.27O sec. -ft.; June 5 (8 p.m.) 1.O1O sec.-

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Hov. 6-9, Hov. 12 to Dec. 26, Mar. 8, 12-14, 26-30.
114 TRIBUTARIES ABOVE GUNNISON RIVER 

Plateau Creek near Cameo, Colo.

Location. Water-stage recorder, lat. 39°11', long. 108°16', in SW£ sec. 18, T. 10 S., 

 _K. 9V W., 1.1 miles upstream from mouth, 4 miles northeast of Cameo.

Drainage area. 604 square miles.

Records available. April 1936 to September 1950.

Average discharge. 14 years, 222 second-feet.

Extremes. Maximum discharge during year. 1,490 second-feet June 1; maximum gage height, 

5.17 feet Feb. 10 (backwater from ice); minimum daily discharge, 30 second-feet Aug. 5, 

6, 9, 10.

1936-50: Maximum discharge, 3,920 second-feet May 27, 1942 (gage height, 7.73 feet), 

from rating curve extended above 3,000 second-feet; minimum daily, 16 second-feet July 

14, 15, Aug. 17, 18, 1940.

Remarks. Records good except those for period of ice effect, which are fair. Many diversions above station for irrigation.

Revisions (water years). W 979: 1942.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

92 

80 

78 

76 

80

78 

76 

78 

106 

111

111 

104 

109 

114 

114

114 

114 

111 

128

123

118 

106 

109 

111 

106

104 

102 

102 

99 

99 

92

Nov.

94 

94 

90 

87 

87

87 

94 

94 

92 

87

111 

85 

90 

94 

102

94 

94 

90 

87 

87

85 

80 

80 

97 

85

85 

87 

82 

80

74

Dec.

78 

66 

72 

68 

68

74 

*82 

80 

87 

87

76 

66 

62 

60 

62

68 

70 

74 

76 

72

68 

66 

72 

76 

70

74 

80 

92 

94 

105 

110

Jan.

110 

98 

86 

84 

82

84 

90 

94 

*100

90

94 

96 

86 

84 

76

76 

84 

92 

98 

96

100 

105 

100 

68 

66

88 

98 

90 

90 

84 

84

Feb.

9O 

88 

94 

110 

110

105 

*100 

90 

94 

80

84 

90 

85 

80 

78

78 

82 

82 

80 

90

94 

76 

85 

90 

94

102 

104 

168

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

109 

*99 

99 

102 

106

109 

82 

76 

99 

94

87 

82 

58 

82 

85

80 

82 

94 

76 

90

76 

78 

78 

78 

85

90 

74 

68 

74 

85 

85

Apr.

99 

118 

151 

109 

99

116 

144 

204 

246 

174

138 

136 

144 

179 

234

179 

162 

196 

204 

210

246 

332 

356 

356 

276

288 

324 

338 

328 

285

Secondroot-days

3,143 

2,675 

2,355

80,562

2,815 

2,603 

2,662 

6,371 

17,496 

14,019 

2,368 

1,139 

1,439

59,085

Peak discharge (base, 1,150 sec. -ft. ) . May 23 (7 a.m.

May

255 

249 

318 

448 

363

279 

258 

237 

213 

193

202 

252 

342 

366 

472

556 

672 

704 

724 

790

840 

955 

1,000 

975 

910

704 

692 

796 

796 

845 

1,090

Maximum

128 

111 

110

1,150

110' 

168 

109 

356 

1,090 

1,190 

199 

53 

116

1,190

June

1,190 

1,100 

920 

696 

724

845 

820 

624 

536 

552

564 

556 

496 

433 

398

366 

366 

324 

291 

246

243 

246 

243 

225 

225

199 

176 

154 

138 

123

Minimum

July

111 

99 

84 

76 

70

66 

64 

154 

151 

123

199 

136 

94 

82 

78

66 

55 

58 

74 

66

56 

51 

47 

46 

41

41 

38 

37 

37 

35 

32

76 

74 

60

56

82 

76 

58 

99 

193 

123 

32 

30 

31

30

) 1,170 sec. -ft.; June

Aug.

31 

31 

31 

31 

30

30 

32 

32 

30 

30

47 

53 

46 

44 

41

42 

44 

41 

40 

38

38 

37 

37 

36 

35

36 

37 

36 

35 

34 

34

Mean

101 

89.2 

76.0

221

90.8 

93.0 

85.9 

212 

564 

467 

76.4 

36.7 

48.0

162

Sept.

34 

32 

31 

31 

31

31 

32 

36 

40 

37

38 

49 

42 

44 

46

42 

41 

42 

51 

116

82 

64 

56 

58 

58

58 

58 

55 

55 

49

Runoff In 

acre-feet

6,230 

5,310 

4,670

159,800

5,580 

5,160 

5,280 

12,640 

34,700 

27,810 

4,700 

2,260 

2,850

117,200

1 (1 a.m.) 1,490 sec. ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 13 to Feb. 12.
TRIBUTARIES ABOVE-GUNNISON RIVER 115

Buzzard Creek near Collbran, Colo.

Location.--Water-stage recorder, lat. 39°1G', long. 107°52i, In sec. 14, T. 9 S., R. 94 

W., half a mile upstream from Brush Creek and 7 miles east of Collbran.

Drainage area. 139 square miles.

Records available. August 1921 to September 192? (monthly discharge only) and October 

1933 to September 1950 In reports of Geological Survey. August 1921 to September 1950 

In reports of State engineer.

Average discharge. 29 years (1921-50), 53.1 second-feet.

Extremes.--Maximum discharge during year, 346 second-feet May 23 (gage height, 3.81 feet); 

minimum dally, 0.3 second-foot Sept. 5-10.

1921-50: Maximum discharge, 1,630 second-feet May 14, 1941 (gage height, 7.80 

feet), from rating curve extended above 900 second-feet; minimum, 0.1 second-foot 

Aug. 27, 1934 (gage height, 0.76 foot).

Remarks.--Records good above 10 second-feet and poor below. Diversions above station for 

Irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.6 

2.3 

2.0 

1.5 

1.0

1.0 

1.2 

1.6 

3.2 

3.9

4.5 

4.5 

4.8 

.5 

.3

.3 

.5 

.5 

7.0 

8.8

7.3 

6.2 

5.2 

5.2 

5.2

5.2 

4.5 

4.1 

3.9 

3.9 

3.7

Nov.

3.2 

3.6 

3.6 

3.4 

3.4

3.2 

3.0 

3.2 

3.4 

3.9

4.8 

3.7 

3.6 

4.8 

5.6

4.5 

4.3 

4.3 

3.9

4.1

4.1 

3.4 

3.7 

4.8 

4.1

3.7 

4.1 

3.9 

3.9 

3.9

Dec.

3.9 

3.9 

3.9 

3.9 

3.9

*3.9 

4.1 

4.1 

5.2 

5.6

4.3 

b3,6 

b3.4 

b3.4 

b3.5

b4.1 

b4.9 

5.6 

6.2 

6.0

5.0 

4.8 

5.0 

5.4 

5.0

5.4 

5.4 

5.6 

6.0 

6.0 

6.2

Jan.

6.2 

6.0 

5.0 

4.1 

4.7

3.8 

3.9 

.0 

.O 

* .2

.4

.8 

.3 

.3

.1

.3 

.6 

.7 

5.0 

5.2

5.4 

5.6 

5.8 

5.8 

4.2

3.8 

4.2 

3.9 

4.3 

4.7 

4.9

Feb.

4.6 

4.3 

4.1 

4.5 

5.4

5.6 

*5.4 

4.8 

4.5 

4.3

5.2 

4.4 

4.3 

5.0 

5.0

5.4 

5.6 

6.0 

6.2 

6.6

6.8 

6.4 

6.8 

7.0 

7.6

8.8 

11 

16

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mo v

June 

July 

Augu 

Sept

Wa

lendar year 194£

ter year 1949-50 .......................

Mar.

13 

12 

12 

13

14

14 

*13 

blO 

12 

10

10 

7.3 

7.0 

9.0 

9.6

8.8 

9.6 

9.2 

11 

9.6

9.6 

8.8 

9.6 

10 

14

b!3 

12 

12 

S.8 

10 

12

Apr.

b!6 

b21 

b31 

20 

*20

38 

61 

91 

89 

48

44 

42 

58 

77 

77

58 

63 

84 

76 

83

109 

137

144 

137 

97

109 

124 

124 

121 

92

Secondfoot-days

126.4 

117.1 

147.2

17,594.7

144.2 

171.6 

333.9 

2,291 

5,197 

2,123 

252.0 

60.5 

47.5

11,011.4

Peak discharge (base, 350 sec. -ft.). No peak above ba

May

89 

99 

152 

191 

125

95 

94 

94 

80 

74

87 

124 

155 

150 

. 188

218 

256 

238 

244 

244

246 

254 

264 

246 

215

155 

150 

163 

156 

153 

198

Maximum

8.8 

5.6 

6.2

374

6.2 

16 

14 

144 

264 

184 

20 

2.6 

3.9

264

se.

June

184 

171 

152 

111 

107

122 

131 

99 

84 

79

75 

73 

69 

67 

62

58 

60 

55 

49 

42

41 

41 

33 

28 

28

26 

22 

21 

18 

15

Minimum

July

12 

9.7 

9.4 

9.4 

9.4

8.8 

7.8 

13 

18 

14

20 

20 

13 

9.7

8.1

7.5 

6.9 

7.2 

6.3 

6.0

5.7 

4.1 

3.6 

3.0 

3.2

3.2 

3.0 

3.2 

3.0 

2.0 

1.8

1.0 

3.0 

3.4

.8

3.8 

4.1 

7.0 

16 

74 

15 

1.8 

.8 

.3

.3

Aug.

1.5 

1.3 

1.6 

2.4 

2.4

2.4 

2.3 

2.1 

1.6 

1.6

2.0 

2.3 

2.1 

1.8 

1.3

1.8 

2.0 

2.3 

2.6 

2.6

2.4 

2.3 

2.3 

2.1 

2.1

2.3 

2.1 

1.6 

1.3 

1.2 

.8

Mean

4.08 

3.90 

4.75

48.2

4.65 

6.13 

10.8 

76.4 

168 

70.8 

8.13 

1.95 

1.58

30.2

Sept.

0.8 

.7 

.6 

.4 

.3

.3 

.3 

.3 

.3 

.3

.5 

1.0 

1.3 

1.3 

1.3

1.3 

1.3 

1.3 

' 2.6 

3.7

3.9 

3.9 

3.4 

3.4 

2.8

2.6 

2.6 

2.0

1.5 

1.5

Runoff in 

acre-feet

251 

232 

292

34,900

286 

340 

662 

4,540 

10,310 

4,210 

500 

120 

94

21,840

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 18 to Mar. 6, Mar. 13-16 (stage-discharge relation affected by 

ice during most of period); discharge computed on basis of 2 discharge measurements, weather records, 

and records for stations on nearby streams.
116 TRIBUTARIES ABOVE GUNNISON RIVER

Big Creek at upper station, near Collbran, Colo.

Location. Water-stage recorder, lat. 39°08', long. 107°55', in NE£ sec. 5, T. 11 S., R. 

94 W., about half a mile downstream from Barter Creek and 8 miles south of Collbran.

Drainage area. 17.3 square miles.

Records available. June 1945 to September 1950.

Extremes. Maximum discharge during year, 200 second-feet June 6 (gage height, 3.83 feet), 

rrom rating curve extended above 150 second-feet; minimum not determined, occurred 

during period of no gage-height record.

1945-50: Maximum discharge, 474 second-feet May 21, 1948, from rating curve extended above 130 second-feet; maximum gage height, 4.91 feet May 29, 1947 (result of 

failure of small reservoir dam); minimum discharge not determined.

Remarks. Records good except those for Oct. 20 to Apr. 11, which are fair. No diversion 

above station. Several small storage reservoirs above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

7.2 

6.7 

6.7 

7.0 

 6.2

6.2 

5.5 

5.3 

6.0 

B.O

6.0 

5.6 

6.0 

6.0 

5.6

5.6 

5.6 

6.7 

6.2 

5.4

6.1 

7.2 

6.7 

6.7 

6.7

6.0 

5.8 

5.6 

5.1 

4.9 

4.4

Nov.

*4.1 

4.1 

4.2 

4.3 

4.3

4.1 

3.8 

3.9 

4.0 

3.8

4.2 

3.9 

4.0 

4.4 

4.2

4.2 

4.1 

4.1 

4.1 

4.0

4.0 

4.0 

4.0 

4.0 

4.0

4.0 

4.0 

4.0 

3.8 

3.8

Dec.

3.9 

4.3 

4.4 

4.8 

5.0

*5.5 

5.1 

4.7 

4.6 

4.4

4.6 

4.6 

4.6 

4.4 

4.4

4,4 

4.4 

4.4

4.6 

4.6

4.4 

4.4 

4.4 

4.4 

4.4

4.4 

4.4 

4.4 

4.4 

4.4 

4.4

Jan.

3.6

Feb.

3.4

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

wa

mbei1 ...... ...---..-------------------

lendar year 1949

ember. ..................................

ter year 1949-50 .......................

Mar.

3.1

Apr.

3.3 

315 

3.9 

4.3 

4.7

4.7 

4.1 

4.7 

4.1 

3.5

3.3 

3.6 

3.6 

4.1 

4.1

3.6 

4.0 

4.9 

5.1 

6.0

9.3 

13 

14 

13 

15

14 

15 

14 

13 

12

Secondfoot-days

186.7 

121.4 

140.1

10,531.8

111.6 

95.2 

96.1 

215.4 

2,162 

3,175 

1,600 

973.7 

262.6

9,139.8

May

16 

26 

33 

30 

22

21 

18 

16 

19 

20

20 

26 

32 

39 

50

58 

79 

90 

102 

111

122 

132 

120 

134 

114

100 

112 

122 

126 

128 

124

Maximum

7.2 

4.4

5.5

186

15 

134 

163 

74 

59 

15

163

June

126 

143 

136 

130 

149

163 

161 

132 

126 

130

130 

128 

122 

114 

109

106 

102 

94 

90 

86

84 

82 

79 

78 

75

66 

63 

59 

56 

56

July

54

53 

56 

60 

50

48 

47 

54 

50 

52

52 

41 

39 

35 

32

31 

37 

39 

39 

40

50 

50 

48 

63 

73

74 

74 

69 

65 

63 

62

Minimum

4.4

3.8 

3.9

-

3.3 

16 

56 

31 

6.7 

4.4

-

Aug.

59 

58 

58 

55 

55

53 

43 

32 

38 

37

32 

29 

29 

29 

29

29 

29 

27 

26 

27

22 

20 

22 

24 

24

24 

22 

16 

12 

6.7 

7.0

Mean

6.02 

4.05 

4.52

28.9

3.6 

3.4 

3.1 

7.18 

69.7 

106 

51.6 

31.4 

8.75

25.0 '

Sept.

6.7 

6.7 . 

6.7 

7.0 

7.0

7.2 

7.9 

8.2 

7.9 

7.7

8.4 

10 

9.9 

6.0 

4.4

4.6 

5.8 

6.7 

15 

13

11 

9.6 

9.3 

9.9 

11

10 

10 

11 

12 

12

Runoff In 

acre-feet

370 

241 

278

20,880

221 

189 

191 

427 

4,290 

6,300 

3,170 

1,930 

521

18,130

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 20-23, Oct. 31 to Mov. 8, Nov. 12, 13, 22, 

23, 30, Dec. 1-6, Jan. 1-19, Apr. 10, 11. Ho gage-height record Jan. 20 to Apr. 4 (stage-discharge 

relation affected by Ice during most of period); discharge computed on basis of weather records and 

records for stations on nearby streams.
TRIBUTARIES ABOVE GUNNISOH RIVER 117

Cottonwood Creek at upper station, near Molina, Colo.

Location. Water-stage recorder and Parshall flume, lat. 39°08', long. 108°00', in SE^ 

 sec. 3, T. 11 S., R. 95 W,, 6 miles southeast of Molina.

Drainage area. 16.3 square miles.

Records available.--May 1945 to September 1950.

Extremes.- -Maximum discharge during year, 61 second-feet June 3 (gage height, 2.43 feet);

" "JfliniBixiin not dstsmiinsd.

1945-50: Maximum discharge, 101 second-feet May 18, 1948 (gage height, 3.01 feet), 

from rating curve extended above 45 second-feet; minimum daily recorded, 3.2 secondfeet Nov. 4, 5, 1948.

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

which are fair. No diversion above station. Several small storage reservoirs above 

station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

10 

9.9 

10 

12 

*11

11 

11 

12 

12 

12

12 

11 

10 

11 

11

11 

11 

11 

9.4 

7.8

9.0 

10 

9.0 

8.3 

8.6

8.3 

8.0 

7.5 

6.9 

6.3 

5.8

.Nov.

(*) 

5.7

Dec.

(») 

6.3

Jan.

(*) 

5.4

Feb.

(») 

6.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Ua

lendar year 1949

ter year 1949-50 ...............

Mar.

(*) 

7.4

Apr.

7.7 

8.6 

9.6 

*8.2 

1O

8.2 

8.7 

10 

8.4 

7.8

7.6 

7.7 

8.4 

9.6 

9.3

8.4 

9.0 

10 

10 

9.6

11 

14 

14 

13 

14

14 

14 

14 

13 

12

Secondfoot-days

303.8 

171.0 

195.3

7,038.0

167.4 

19O.4 

229.4 

309.8 

772 

1,259 

988 

644 

403

5,633.1

May

12 

15 

17 

16 

12

12 

11 

11 

10 

11

12 

16 

18 

22 

24

28 

34 

35 

36

37

37 

36 

36 

37 

31

29 

34 

34 

33 

36 

40

Maximum

12

64

14 

40 

59 

39 

27 

18

59

June

41 

47 

58 

59 

59

56 

54 

54 

46 

36

34 

34 

36 

36 

36

36 

37 

36 

36 

35

34 

33 

38 

45 

43

42 

41 

39 

39 

39

Minimum

July

39 

36 

34 

34 

33

33 

34 

36 

33 

33

33 

29 

29 

28 

28

27 

28 

30 

30 

29

31 

31 

30 

30

33

36 

36 

34 

33 

30 

28

5.8

-

7.6 

10 

33 

27 

15 

12

-

Aug.

27 

26 

26 

24 

22

19 

20 

24 

24 

24

26 

25 

22 

21 

23

25 

24 

20 

18 

18

20 

18 

16 

15 

16

17 

16 

16 

18 

17 

17

Mean

9.80 

5.7 

6.3

19.3

5.4 

6.8 

7.4 

10.3 

24.9 

42.0 

31.9 

20.8 

13.4

15.4

Sept.

15 

14 

14 

14 

13

13 

13 

13 

13 

13

13 

14 

13 

13 

13

13 

12 

13 

18 

17

13 

12 

13 

15 

14

13 

12 

12 

12 

13

Runoff in 

acre-feet

603 

339 

387

13,97O

332 

378 

455 

614 

1,530 

2,500 

1,960 

1,280 

799

11,180

* Winter discharge measurement made on this day.

Kote. Stage-discharge relation affected by ic'e Oct. 31, Nov. 6, 7, 12-14, 22, 23, Dec. 1-9. No 

gage-height record Oct. 14-2O, 24-3O, Nov. 1-5, 8-11, 15-21, 24-30, Dec. 1O to Apr. 3, Apr. 10-12 

(stage-discharge relation affected by ice during most of periods); discharge- computed on basis of 

4 discharge measurements, weather records, and records for stations on nearby streams.
118 TRIBUTARIES ABOVE QUNNISON RIVER

Bull freek at upper station, near Molina, Colo.

Location.--Water-stage recorder, lat. 39°07', long. 108°02', In SW^ sec. 5, T. 11 S., R. 

95 W., 6 miles south of Molina.

Drainage area. 9.7 square miles.

Records available.--May 1945 to September 1950.

Extremes.--Maximum discharge during year, 38 second-feet May 21 (gage height, 1.93 feet); 

minimum not determined.

1945-50: Maximum discharge, 82 second-feet May 19, 1948, from rating curve extended 

above 35 second-feet; maximum gage height, 2.94 feet Oct. 12, 1946 (beaver dam); minimum dally discharge, 0.8 second-foot Nov. 16-23, 1946, Nov. 5, 1949.

Remarks.--Records good except those for periods of Ice effect, which are fair. One diversion and several small reservoirs above station for Irrigation.

Rating table, water year 1949-5O, except periods of Ice effect

(gage height. In feet, and discharge, In second-feet)

(Shifting-control method used Oct. 1 to Nov. 9)

1.1 1.0 1.5 10 

1.2 2.2 1.6 15 

1.3 4.0 1.8 27 

1.4 6.6 1.9 35

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

14 

13 

8.1 

5.0 

*5.0

5.0 

4.8 

5.0 

5.6 

5.3

5.6 

5.8 

6.1 

5.8 

5.6

5.6 

4.3 

4.3 

3.6 

3.5

2.2 

2.4 

1.8 

1.6 

1.6

1.7 

1.7 

1.7 

1.7 

1.7 

1.5

Nov.

1.7 

*1.7 

1.7 

1.7 

1.7

1.7 

1.8 

1.7 

1.8 

1.8

1.6 

1.4 

1.4 

1.4 

1.5

1.5 

1.5 

1.5 

1.6 

1.6

1.6 

1.4 

1.4 

1.4 

1.4

1.4 

1.4 

1.4 

1.4 

1.4

Dec.

(*) 

1.5

Jan.

1.7 

1.7 

1.6 

1.5 

1.4

1.4 

1.4 

1.5 

1.6 

*2.0

2.0 

1.8 

1.8 

1.8 

2.1

2.1 

1.8 

1.9 

2.1 

2.3

2.4 

2.4 

2.4 

2.4 

2.4

2.2 

2.2 

2.3 

2.4 

2.5 

2.4

Feb.

2.2 

2.2 

2.2 

2.3 

2.4

*2.7 

2.6 

2.6 

2.5 

2.4

2.4 

2.6 

2.6 

2.4 

2.4

2.4 

2.4 

2.2 

2.2 

2.2

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.6

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Aprl

June 

July 

Augu 

Sept

Wa

mber. ................-...---.-..-...-...

lendar year 1949

ter year 1949-50 .......................

Mar.

2.6 

2.4 

2.4 

2.4 

2.4

*2.4 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.1 

2.2 

2.4

2.4 

2.4 

2.6 

2.4 

2.6

2.6 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.3 

2.3 

2.6 

2.4

Apr.

2.7 

2.9 

3.1 

*3.6 

3.6

2.7 

3.3 

4.0 

3.6 

3.3

2.9 

2.9 

3.5 

4.0 

4.3

3.6 

3.6 

4.3 

4.3 

4.5

6.1 

7.4 

7.7 

7.0 

7.4

7.7 

8.1 

8.1 

7.7 

7.0

Secondfoot-days

140.6 

46.5 

46.5

3,713.5

61.5 

65.9 

72.3 

144.9 

561.3 

586 

346.6 

248.3 

192.7

2,513.1

May

7.4 

8.9 

10 

10 

9.3

8.1 

6.6 

6.1 

5.8

6.1

7.0 

10 

12 

15 

18

22 

27 

29 

29 

30

30 

30 

28 

29 

27

22 

22 

22 

22 

24 

28

Maximum

14 

1.8

57

2.5 

2.7 

2.6 

8.1 

30 

29 

15 

15 

16

30

June

28 

28 

26

21 

19

22 

29 

26 

22 

20

21 

23 

25 

25 

23

22 

22 

21 

19 

18

17 

16 

12 

12 

11

11 

12 

13 

12 

10

July

13 

12 

11 

10 

9.3

9.3

12 

15 

13 

13

13 

12 

12 

11 

11

10 

9.6 

9.6 

9.3 

8.9

9.6

13 

15 

13 

12

12 

11 

9.6 

9.3 

8.5 

9.6

Aug.

13 

12 

12 

12 

13

13 

15 

13 

12 

12

12 

9.3 

8.1 

7.0

8.1

7.0 

6.6 

5.6 

4.0 

3.8

3.4 

4.8 

5.3 

5.3 

5.3

5.3 

5.0 

4.8 

4.0 

3.5 

3.1

Minimum Mean

1.5 4.54 

1.4 1.55 

1.5

10.2

1.4 1.98 

2.2 2.35 

2.1 2.33 

2.7 4.83 

5.8 18.1 

10 19.5 

8.5 11.2 

3.1 8.01 

2.9 6.42

6.89

Sept.

2.9 

2.9 

2.9 

2.9 

4.3

7.0 

7.4 

7.4 

7.4 

7.4

7.0 

6.6 

6.1 

5.6 

4.3

4.8 

4.5 

4.5

13 

16

9.3 

7.0 

6.3 

6.1 

6.3

6.1 

5.6 

6.6 

8.9 

5.6

Runoff In 

acre -feet

279 

92 

92

7,360

122 

131 

J.43 

287 

1,110 

1,160 

687 

492 

382

4,980

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 31, Nov. 10-14, 21-23, 26-28, Nov. 30 to 

Jan. 9, Jan. 18 to Feb. 5, Feb. 9, 10, 21-23, Mar. 7, 8, 12-14, 19, 26-29.
TRIBUTARIES ABOVE GUMISON RIVER 119

Mesa Creek near Mesa, Colo.

Location.--Water-stage recorder, lat. 39°05 I , long. 108°07', in SVf£ sec. 16, T. 11 S., R. 

9ETT, an eighth of a mile upstream from unnamed stream and 65 miles southeast of Mesa.

Records available.--April 1941 to September 1950.

Extremes.--Maximum discharge during year, 23 second-feet May 16 (gage height, 1 20 feet)- 

minimum daily, 2.2 second-feet Nov. 6, 9, Apr. 3.

1941-50: Maximum discharge observed, 140 second-feet May 12, 1941, from rating 

curve extended above 50 second-feet; maximum gage height, 2.45 feet Dec. 31, 1946 (ice 

jam); minimum daily discharge, 0.6 second-foot Mar. 9, 11-14, 1946, Mar. 18-20, 1948.

Remarks.--Records fair. Flow partly regulated by small re&ervoirs above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

15 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

8.4 

8.0 

8.0 

8.0 

8.0

8.0 

8.0 

8.0 

8.4 

8.4

8.7 

8.0 

8.0 

8.0 

_ 8.0

7.6 

7.6 

8.0 

8.0 

8.4

8.0 

8.7 

7.6 

7.6 

7.3

6.9 

6.9 

6.9 

6.9 

6.9 

7.3

Nov.

6.9 

*6.9 

6.9 

6.9 

5.0

2.2 

2.5 

2.5 

2.2 

2.4

3.3 

b2.9 

3.9 

3.6 

3.1

3.1 

3.3 

3.3 

3.3 

3.3

3.9 

3.6

3.6 

3.6 

3.9

3.9 

3.9 

3.9 

3.9 

4.5

Dec.

4.5 

b4.2 

b4.6 

b4.4 

b4.6

4.8 

*4.8 

4.8 

5.0 

5.3

b4.0 

b3.8 

b4.0 

4.2 

3.8

4.2 

4.8 

5.2 

6.0 

5.5

4.8 

4.6 

4.8 

4.8 

4.3

4.6 

5.0 

5.0 

5.4 

5.8 

6.0

Jan.

6.0 

6.2 

5.5 

4.8 

5.0

4.4

4.6 

6.2 

*7.3 

7.3

6.9 

6.6 

6.6 

6.6 

6.6

6.2 

5.9 

5.9 

5.9 

5.9

5.6 

5.6 

5.6 

5.9 

5.9

b4.4 

b5.0 

b4.8 

5.3 

5.6 

5.6

Feb.

5.6 

5.3 

5.3 

5.3 

5.3

*5.0 

5.3 

5.3 

b5.2 

b4.8

5.3 

5.3 

5.9 

5.9

Z.9

5.9 

6.2 

6.2 

6.2 

6.2

6.6 

b6.7 

6.6 

6.6 

6.9

6.9

6.9 

6.9

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

7.6 

7.3 

7.3 

7.3 

7.6

*7.3 

8.4 

b9.0 

7.6 

7.6

7.6 

b7.0 

b6.4

7.3 

7.3

7.3 

7.3 

7.3 

b7.3 

6.9

7.3 

6.9 

6.6 

6.6 

6.6

6.6 

6.9 

b5.8 

b6.0 

6.6 

6.6

Apr.

6.9 

5.9 

2.2

*2.7 

5.0

5.3 

6.6 

7.3 

6.9 

6.6

5.9 

5.9 

6.6 

6.9

7.6

6.9 

6.2 

6.6 

6.6 

6.9

8.4 

9.4 

10 

9.1 

9.1

9.4 

9.8 

9.8 

9.1 

8.4

Secondfoot-days

242.5 

116.2 

147.6

4,450.6

179.7 

165. S 

221.2 

214.0 

446.2 

535 

531 

421.7 

265.2

3,485.8

May

8.7 

11 

11 

11 

9.8

8.7 

8.4 

8.0 

7.6 

7.6

8.4 

11 

12

14 

16

18 

19 

18 

19 

19

18 

20 

20 

20

18

17 

17 

18 

17 

17 

18

Maximum

8.7 

6.9 

6.0

32

7.3 

6.9 

9.0 

10 

20 

19 

20 

17 

10

20

June

17 

15 

16 

17 

17

18 

18 

18 

18 

19

18 

19 

18 

18 

18

18

18 

18 

19 

18

18 

18 

18 

18 

19

19 

18 

18 

17

17

July

17 

17 

17 

16 

17

16 

16 

17 

17 

15

18 

20 

19 

18 

18

18 

19 

20 

20 

19

18 

17 

16 

15

15

15 

15 

17 

18 

16 

14

Minimum

6.9 

2.2 

3.8

1.1

4.4 

4.8 

5.8 

2.2 

7.6 

15 

14 

8.7 

7.9

2.2

Aug.

14 

14 

15 

' 16 

15

14 

14 

14 

15 

17

17 

16 

16 

16 

16

16 

15 

14

14 

14

13 

13 

12 

11 

8.7

11 

11 

10 

10 

10 

10

Mean

7.82 

3.87 

4.76

12.2

5.80 

5.91 

7.14 

7.13 

14.4 

17.8 

17.1 

13.6 

8.84

9.55

Sept.

10 

9.5 

10 

9.5 

9.0

9.0 

9.0 

9.0 

9.0 

9.0

8.6 

9.0 

9.0 

9.0 

8.3

8.3 

8.3 

8.3 

9.0 

9.0

8.6 

9.0 

8.6 

8.3 

8.3

9.5 

9.0 

7.9 

7.9 

8.3

Runoff In 

acre-feet

481 

230 

293

8,820

356 

328 

439 

424 

885 

1,060 

1,050 

836 

526

6,910

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 14 to Jan. 8 (stage-discharge relation affected by Ice during 

most of period}; discharge computed on basis of weather records and records for stations on nearby 

streams.

207364 O - 52 - 9
120 GUMISON RIVER BASIN

Taylor Park Reservoir at Taylor Park, Colo.

Location.--Staff gage, lat. 38°49', long. 106°36', 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. 

Datum of gage is 9,187 feet above mean sea level (Bureau of Reclamation bench mark); 

gage readings have been reduced to elevations above mean sea level.

Records available.--October 1938 to September 1950 in reports of Geological Survey, 

tember 193Y to September 1938 in files of Bureau of Reclamation.

SepExtremes.--Maximum contents observed during year, 109,000 acre-feet June 26 (elevation, 

9,331.30 feet); minimum, 35,200 acre-feet Sept. 29 (elevation, 9,282.80 feet).

1938-50: Maximum contents observed, 109,700 acre-feet June 7-12, 1948 (elevation, 

9,331.65 feet); minimum, 9,950 acre-feet Sept. 20-22, 1940 (elevation, 9,243.55 feet).

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-feet between 

elevations 9,187 feet (bottom of outlet gates) and 9,330 feet (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 1089: 1940(m), 1942(M), 1945, 1946.

Monthly elevation and contents, water year October 1949 to September 1950

Date

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

Calendar year 1949 .....

Jan. 31... ...............

May 31 ..................

Water year 1949-50.....

Elevation 

(feet)

9 3O9 25 * *

-

9 310 90

9 330 95

-

Contents 

(acre-feet)

-

-

Change in contents 

during month 

(acre-feet)

+9,000

-30,800
GUMNISON RIVER BASIN 121

Taylor River below Taylor Park Reservoir, Colo.

Location.--Water-stage recorder, lat. 38°49", long. 106°36', in sec. 24, T. 14 S., R. 83 

W., 50 feet downstream from bridge on State Highway 306, a quarter of a mile downstream 

from Taylor Park Reservoir Dam, and 16 miles-northeast of Alraont. Datum of gage is 

9,168.67 feet above mean sea level (Bureau of Reclamation bench mark). Chain gage 

1,000 feet upstream used during winter periods.

Drainage area. 245 square miles.

Recoras available.--October 1938 to September 1950. September 1933 to August 1934 (in 

reports or 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).

Average discharge.--16 years (1929-33, 1938-50), 183 second-feet.

Extremes.--Maximum discharge during year, 905 second-feet Sept. 8 (gage height, 3.88 feet); 

minimum daily, 48 second-feet Oct. 25 to Nov. 4.

1938-50: Maximum discharge, 1,440 second-feet June 4, 1948 (gage height, 4.80 feet); 

no flow May 1 to July 3, 1940, May 7-22, 1942, May 5-21, 1943.

Remarks.--Records excellent. Chain gage read once daily and each time reservoir gates were 

changed during winter. Flow regulated by Taylor Park Reservoir (see preceding page). 

One small diversion from Willow Creek above reservoir.

Cooperation. Gage-height record furnished by Uncompahgre Valley Water Users Association.

Rating tables, water year 1949-50 (gage height, in feet,

and discharge, in second-feet) 

(Shifting-control method used Aug. 19 to Sept. 30)

May'29" 11 SSt."5o

1.3 43 Z.Z 235 O.7 44 

1.4 58 2.6 360 .9 69 

1.7 112 3.4 650 1.5 16C 

1.9 155 S 4.0 950 1.8 218 v 

2.2 324

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

262 

262 

256 

198 

148

144 

101 

101 

101 

102

101 

101 

101 

101 

101

101 

101 

101 

101 

99

49 

49 

49 

49 

48

48 

48 

48 

48 

48 

46

Nov.

48 

48 

48 

48 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

49 

49 

49 

49 

49

Dec.

49 

49 

49 

49 

49

51 

51 

51 

51 

51

51 

51

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

Jan.

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51 

51

Feb.

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

51 

51 

51 

51

51 

54 

54 

54 

54

54 

54 

54

Month

Goto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

Lendar year 1949

ter year 1949-50 .......................

Mar.

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

54 

54 

54

54

54 

54 

54 

54 

54 

54

Apr.

54 

54 

54 

54 

54

54 

54 

54 

54 

54

54 

184 

268 

268 

263

263 

263 

Z63 

263

160

104 

104 

104 

104 

104

104 

160 

205 

205 

205

Secondfoot-days

3,215 

1,466 

1,571

74,869

1,581 

1,449 

1,674 

4,188 

5,676 

8,752 

10,506 

20,026 

17,670

77,774

May

205 

205 

250 

25S 

290

318 

258 

209 

209 

209

192 

157 

157 

157 

157

150 

150 

150 

150 

150

154 

154 

154 

154 

154

154 

154 

154 

155 

153 

155

Max! mum

262 

49

51

1,120

51 

54 

54 

268 

318 

504 

630 

800 

900

900

June

153 

153 

158 

158 

158

158 

162 

165 

168 

168

168 

168 

168 

168 

168

168 

217 

416 

504 

504

468 

490 

479 

472 

476

458 

440 

426 

409 

384

July

374 

353 

350 

336 

319

304 

292 

307 

301 

286

319 

304 

271 

244 

223

211 

200 

198 

195 

195

185 

238 

339 

356 

367

510 

549 

630 

598 

574 

578

Aug.

614 

622 

626 

622 

618

570 

538 

510 

504 

465

465 

546 

542 

538 

542

538 

535 

546 

665 

745

800 

800 

795 

795 

790

785 

7S5 

785 

780 

780 

780

Minimum Mean

48 104 

48 48.9 

49 50.7

28 205

51 51.0 

51 51.8 

54 54.0 

54 140 

150 183 

153 292 

185 339 

465 646 

104 589

48 213

Sept.

775 

775 

770 

770 

800

810 

865 

900 

900 

890

845 

830 

770 

765 

745

634 

638 

638 

626 

535

486 

367 

298 

292 

262

148 

150 

148 

134 

104

Runoff In 

acre-feet

6,380 

2,910 

3,120

148,500

3,140 

2,870 

3,320 

8,310 

11,260 

17,360 

20,840 

39,720 

35,050

154,300

Hote. Discharge computed from chain-gage readings Dec. 6 to May 28.
122 RIVER BASIN

Taylor River at Almont, Colo.

Location.--Water-stage recorder, lat. 38°40', long. 106°51', in sec. 22, T. 51 N., R. 1

 E., in Almont, 10 feet downstream from bridge on State Highway 306 and 800 feet upstream 

from confluence with East River. Datum of gage is 8,010.76 feet above mean sea level, 

datum of 1929.

Drainage area. 440 square miles.

Records available. July 1910 to September 1931 and October 1933 to September 1950 in

 reports or tieological Survey. July 1910 to September 1950 in reports of State engineer.

Average discharge. 40 years (1910-50), 347 second-feet.

Extremes.--Maximum discharge during year, 945 second-feet Sept. 8; maximum gage height,

 3.49 feet Jan. 7 (ice Jam); minimum daily discharge, 82 second-feet Dec. 13, 14.

1910-50: Maximum discharge, 3,760 second-feet June 9, 1920 (gage height, 5.0 feet),

from rating curve extended atiove 2,300 second-feet; minimum before storage began in

Taylor Park Reservoir, 50 second-feet on several days in August 1913 (gage height, 1.2

feet); minimum daily, 24 second-feet Mar. 12, 1938. 

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

which are fair. Flow partly regulated by Taylor Park Reservoir (see p.120), 24 miles

above station. Small diversions above station for irrigation.

Rating table, water year 1949-50, except periods of Ice effect

(gage height, in feet, and discharge, In second-feet)

(Shifting-control method used Mar. 19 to Apr. 11)

1.5 78 2.7 620 

1.6 100 3.0 820 

1.8 160 3.2 990 

2.0 245

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

356 

350 

345 

305 

240

222 

184 

168 

192 

180

172 

172 

176 

172 

168

168 

172 

176 

172 

164

125 

108 

111 

111 

108

108 

108 

106 

106 

108 

103

Nov.

106 

*103 

103 

100 

103

103 

103 

100 

106 

108

106 

98 

103 

108 

108

103 

103 

103 

100 

103

103 

103 

103 

103 

108

100 

106 

98 

96 

96

Dec.

Ill 

98 

96 

90 

92

96 

98

100 

*106 

106

93 

88 

82 

82 

86

92

loo

110 

110 

110

110 

100 

98 

94 

94

94 

96 

98

100 

98 

100

Jan.

100 

105 

105 

105 

105

100 

100 

100 

aloo 

a 105

allo 

*allO 

alls 

a!20 

a!20

Sl2o

120 

120 

120 

120

110 

105 

100 

105 

110

110 

100 

96 

94 

96 

100

Feb.

92 

90 

90 

94

loo

100 

100 

*94 

90 

a84

a86 

94 

94 

94 

94

90 

90 

90 

90 

92

98 

98 

100 

100 

98

92 

90 

90

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Ma v

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

90 

89 

94 

90 

92

92 

90 

98 

*94 

96

96 

92 

90 

88 

92

98 

98 

100 

106 

103

98

100 

100 

103 

100

103 

100 

100 

106 

103 

106

Apr. -

111 

120 

122 

*111 

106

108 

122 

138 

131 

120

111 

147 

350 

378 

383

367 

378 

411 

350 

255

a200 

&230 

356 

330 

285

295 

325 

383 

389 

362

Secondfoot-days

5,456 

3,086 

3,028

123,765

3,326 

2,614 

3,007 

7,474 

12,695 

17,728 

14,249 

21,412 

19,052

113,127

May

367 

394 

450 

494 

494

444 

356 

362 

362 

362

362 

330 

335 

325 

345

367 

400 

400 

389 

389

416 

466 

488 

499 

466

428 

411 

406 

406 

450 

532

Maximum

356 

108 

111

1,910

120 

100 

106 

411 

532 

757 

708 

813 

927

927

June

570 

582 

570 

499 

482

560 

570 

538 

510 

516

543 

543 

532

516 

504

504 

532 

662 

757 

743

694 

715 

701 

680 

674

650 

620 

604 

592 

565

July

538 

516 

510 

488 

466

450 

438 

455 

a460 

a430

a480 

a450 

400 

372 

345

340 

320 

325 

320

315

295 

315 

422 

460 

455

576 

620 

708 

680 

650 

650

Aug.

674 

680 

701 

701 

701

656 

609 

548 

548 

521

521 

614 

614 

609 

609

609 

604 

604 

694 

764

606 

813 

813 

806 

806

806 

806 

799 

799 

792 

785

Minimum Mean

103 176 

96 103 

82 97 . 7

82 339

94 107 

84 93.4 

88 97.0 

106 249 

325 410 

482 591 

295 460 

521 691 

154 635

82 310

Sept.

785 

785 

785 

778 

813

828 

876 

918 

927 

918

863 

876 

813 

806 

792

687 

680 

680 

680 

614

576 

472 

367 

367 

362

227 

209 

209 

200 

154

Runoff In 

acre -feat

10,820 

6,120 

6,010

245,500

6,600 

5,180 

5,960 

14,820 

25,180 

35,160 

28,260 

42,470 

37,790

224,400

* Winter discharge measurement made on this day.

a No gage-height record (stage-discharge relation affected by Ice during part of periods); discharge 

computed on basis of 1 discharge measurement, weather records, and records for stations on nearby 

streams.

Note. Stage-discharge relation affected by Ice Dec. 4-8, 12, Dec. 14 to Jan. 8, Jan. 17 to Feb. 9, 

Fe'BTT2 to Mar. 18.
GUNNISON RIVER BASIN 123

Gunnlson River near Gunnlson, Colo.

Location.--Water-stage recorder, lat. 38°33', long. 106°57', in sec. 35, T. 50 N., R. 1 W., 

a quarter of a mile dovmstream from Antelope Creek and 1 mile west of Gunnison.

Drainage area. 1,010 square miles.

Kecords available.--October 1910 to November 1914, October 1915 to December 1928, October 

1944 to September 1950.

Average discharge.--23 years, 847 second-feet.

Extremes. Maximum discharge during year, 2,560 second-feet June 3 (gage height, 4.31 

reet); minimum daily, 146 second-feet Dec. 15.

1910-14, 1915-28, 1944-50: Maximum discharge observed, 11,400 second-feet June 13, 

1918 (gage height, 4.05 feet, site and datum then in use), from rating curve extended 

above 5.000 second-feet; minimum observed, 119 second-feet Jan. 18, 1945 (discharge measurement), but may have been less during period of no gage-height record.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Plow partly regulated by Taylor Park Reservoir (see p. 120), 37 

miles above station. Diversions above station for irrigation.

Rating tables, water year 1949-50, except period of loe effect

(gage height, In feet, and discharge. In second-feet)

(Shifting-control method used Dec. 1-20)

Oct. 1 to Feb. 28 ar. 1 to Sept. 30

1.2

1.5 

1.8 

2.1

140

210

310

435

1.4 

1.7 

2.1 

2.6

205

300

465

740

3.2 

3.8 

4.3

1,250

1,870

2,550

Discharge, In second-feet, water year October 1949 to September 1950

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.

422 

417 

404 

378 

342

330 

300 

275 

280 

290

292 

300 

306 

318 

314

310 

314 

326 

326 

326

310 

27O 

260 

260 

260

250 

250 

250 

250 

250 

268

Nov.

278 

275 

268 

264 

264

258 

258 

264 

282 

286

289 

244 

261 

268 

282

258 

261 

258 

250 

247

240 

234 

234 

264 

244

240 

240 

240 

234 

216

Dec.

210 

190 

185 

178 

*170

178 

180 

185 

198 

200

180 

165 

158 

148 

146

158 

198 

205 

205 

202

200 

190 

180 

180 

180

180 

190 

1"90 

190 

190 

190

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Ma v

June 

July 

Augu 

Sept

Wa

Jan.

190 

210 

210 

210 

210

210 

200 

190 

180 

180

180 

190 

210 

210 

220

*220 

220 

220 

220 

220

220 

210 

190 

190 

200

210 

200 

190 

180 

190 

200

Feb.

200 

190 

180 

190 

200

 210 

210 

210 

210 

180

180 

190 

190 

190 

190

180 

170 

170 

170 

170

180 

180 

180 

190 

190

180 

180 

180

lendar year 194=

ter year 1949-50 .......................

Mar.

180 

180 

180 

180 

180

190 

 190 

190 

180 

180

190 

190 

170 

160 

170

170 

170 

180 

180 

180

180 

180 

»bl80 

bl80 

b!80

b!80 

b!80 bieo

b!80 

b!90 

b200

Apr.

232

272 

304 

268 

 276

324

372 

456 

452 

388

360 

388 

630 

747 

789

740 

826 

971 

908 

842

1,120 

1,440 

,570 

,450 

,140

,120 

,170 

1,140 

1,150 

998

Secondfoot-days

9,448 

7,701 

5,699

273,910

6,280 

5,240 

5,600 

22,843 

43,103 

59,730 

24,918 

26,456 

19,666

236,684

May

1,010 

1,170 

1,420 

1,480 

1,250

1,100 

908 

882 

850 

789

874 

1,020 

1,090 

1,220 

1,480

1,540 

1,740 

1,750 

1,630 

1,600

1,740 

1,990 

2,130 

2,110 

1,920

1,580 

1,340 

1,260 

1,160 

1,320 

1,750

Maximum

422 

289 

210

5,000

220 

210 

200 

1,570 

2,130 

2,370 

1,310 

944 

874

2,370

June

2,150 

2,370 

2,370 

2,020 

1,950

2,250 

2,340 

2,120 

1,850 

1,840

2,040 

2,260 

2,200 

2,190 

2,120

2,130 

2,190 

2,290 

2,250 

2,040

1,940 

1,990 

1,800 

1,730 

1,760

1,650 

1,570 

1,500 

1,450 

1,370

July

1,310 

1,220 

1,210 

1,090 

1,020

935 

899 

989 

1,020 

935

944 

926

796 

722 

680

669 

630 

647 

636 

608

554 

526 

559 

581 

559

630 

674 

768 

761 

680 

740

Minimum

250 

216 

146

145

180 

170 

160 

232 

789 

1,370 

526 

722 

293

146

Aug.

803 

810 

850 

858 

874

917 

926 

796 

761 

722

728 

818 

810 

810 

803

810 

789 

775 

834 

899

944 

935 

935 

926 

926

926 

917 

908 

890 

882 

874

Mean

305 

257 

184

750

203 

187 

181 

761 

1,390 

1,991 

804 

853 

656

648

Sept.

866 

858 

834 

810 

834

803 

818 

858 

874 

866

834

810 

775 

775 

761

686 

664 

652 

652 

636

586 

510 

438 

420 

429

364

328 

320 

312 

293

Runoff in 

acre -feet

18,740 

15,270 

11,300

543,200

12,460 

10,390 

11,110 

45,310 

85,490 

118,500 

49,420 

52,470 

39,010

469,500

Peak discharge (base, 5,400 sec.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note.--Ho gage-height record Oct. 9. 10, 21-30, Dec. 21 to Mar. 22 (stage-discharge relation 

affected by Ice during most of period)j discharge computed on basis of 3 discharge measurements, 

weather records, and records for stations on nearby streams.
124 GUNNISON RIVER BASIS

Gunnison River at lola, Colo.

Location. Water-stage recorder, lat. 38°29', long. 107°06', in NW^ sec. 28, T. 49 N., R.

 y W., 1 000 feet upstream from bridge on State Highway 149 and 3,000 feet northeast of 

.lola. Datum of gage Is 7,434.63 feet above mean sea level, datum of 1929.

Drainage area. 2,490 square miles.

Records available.--October 1899 to November 1903, April 1938 to September 1950.

Average discharge. 16 years, 879 second-feet.

Extremes. Maximum discharge during year, 2,940 second-feet June 7; maximum gage height

 recorded, 5.55 feet Dec. 22 (ice jam); minimum daily discharge, 230 second-feet Dec. 15, 

16.

1899-1903, 1938-50: Maximum discharge, 7,140 second-feet May 22, 1948, June 19, 

1949; maximum gage height recorded, that of Dec. 22, 1949; minimum dally discharge prior 

to construction of Taylor Park Reservoir, 221 second-feet at times July to October 1902; 

minimum daily discharge, 130 second-feet Feb. 19, 1939.

Remarks. Records excellent except those for periods of ice effect or no gage-height 

record, which are fair. Plow partly regulated by Taylor Park Reservoir (see p. 120). 

Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

522 

513 

495 

468 

435

412 

398 

368 

390 

405

420 

420 

420 

412 

412

412 

428 

450 

450 

450

435 

412 

405 

412 

412

428 

420 

450 

450 

459 

*442

Hov.

442 

442 

442 

435 

428

428 

420 

428 

459 

468

486 

428 

412 

428 

468

442 

435 

428 

412 

405

398 

398 

398 

428 

412

398 

398 

405 

405 

375

Dec.

375 

360 

340 

330 

*280

290 

290 

300 

300 

310

310 

290 

260 

240 

230

230 

240 

270 

290 

290

290 

290 

280 

270 

260

260 

260 

260 

270 

270 

270

Jan.

270 

280 

290 

290 

290

280 

270 

260 

260 

260

*260 

270 

290 

300 

300

310 

310

310 

310 

310

310 

300 

290 

270 

290

310 

290 

270 

260 

270 

280

Feb.

280 

270 

260 

270 

290

300 

300 

300 

300 

280

270 

280 

290 

290 

270

260 

250 

250 

250 

260

260 

260 

270 

270 

270

260 

260 

260

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-50 .......................

Bar.

260 

260 

260 

260 

260

270 

270 

270 

260 

260

260 

250 

250 

240 

240

240 

240 

250 

260 

270

260 

270 

270 

270 

280

280 

290 

300 

*320 

350 

430

Apr.

600 

750 

838 

717 

717

816 

*882 

1,040 

1,010 

838

717 

706 

859 

1,140 

1,270

1,170 

1,220 

1,390 

1,360 

1,250

1,480 

1,870 

2,120 

2,070 

1,660

1,600 

1,620 

1,560 

1,560 

1,390

Secondfoot-days

13,405 

12,751 

8,805

398,146

8,860 

7,630 

8,450 

36,220 

51,750 

71,420 

27,940 

29,007 

21,840

298,078

May

1,350 

1,450 

1,720 

1,790 

1,600

1,420 

1,250 

1,170 

1,100 

1,030

1,030 

1,220 

1,300 

1,410 

1,680

1,780 

1,970 

2,050 

1,930 

1,850

1,970 

2,260 

2,410 

2,430 

2,260

1,980 

1,700 

1,580 

1,480 

1,550 

1,980

Maximum

522 

486 

375

6,970

310 

300 

430 

2,120 

2,430 

2,800 

1,480 

1,040 

926

2,800

June

2,440 

2,730 

2,800 

2,530 

2,390

2,640 

2,790 

2,570 

2,260 

2,210

2,440 

2,710 

2,660 

2,660 

2,570

2,590 

2,640 

2,710 

2,660 

2,440

2,340 

2,390 

2,260 

2,100 

2,100

1,980 

1,850 

1,740 

1,670 

1,550

July

1,480 

1,360 

1,340 

1,190 

1,120

1,010 

982 

1,070 

1,120 

1,070

1,080 

1,050 

937 

860 

805

772 

739 

761 

739 

695

640 

590 

610 

610 

590

662 

717 

838 

849 

816 

838

Minimum

368 

375 

230

220

260 

250 

240 

600 

1,030 

1,550 

590 

860 

368

230

Aug.

904 

915 

937 

959 

982

1,030 

1,040 

926 

904 

860

871 

948 

948 

937 

915

915 

893 

871 

904 

97d

994 

994 

982 

959 

959

937 

937 

915 

904 

904 

893

Mean

432 

425 

284

1,091

286 

272 

273 

1,207 

1,669 

2,381 

901 

936 

728

817

Sept.

893 

882 

860 

827 

838

838 

838 

871 

926 

915

915 

904 

882 

860 

849

805 

761. 

750 

728 

739

684 

630 

550 

513 

522

477 

420 

405 

390 

368

Runoff In 

acre-feet

26,590 

25,290 

17,460

789,700

17,570 

15,130 

16,760 

71,840 

102,600 

141,700 

55, 420 

57,530 

43,320

591,200

Peak discharge (base, 3,400 sec. -ft.). Ho peak above base.

Winter discharge measurement made on this day. 

Hote. Stage-discharge relation affected by Ice Dec. Z to Apr. 1 (no gage-height record Dec. 23 

to Mar. 28| discharge computed on basis of 1 discharge measurement, weather records, and records 

for stations on nearby streams).
GUNNISON ROTH? BASIN 125

Gunnison River below Gunnlson tunnel, Colo.

Location.--Water-stage recorder, lat. 38°32', long. 107°39', In NW^ sec. 10, T. 49 N., R. 

7 W., a quarter of a mile downstream from Gunnlson tunnel and 12 miles northeast of 

Montrose. Datum of gage Is 6,527.06 feet above mean sea level, datum of 1929.

Drainage area. 3,980 square miles.

Records available. January 1943 to September 1950. April 1905 to September 1911 at site 

above East Fortal. Records since Jan. 20, 1943, equivalent to earlier records If flow 

through Gunnlson tunnel Is added to flow past station.

Extremes.--Maximum discharge during year, 5,360 second-feet June 13 (gage height, 6.68 

 feet); no flow Oct. 8, Sept. 5, 6, 15, 16.

1905-11, 1943-50: Maximum discharge observed, 15,000 second-feet June 14, 1906

(discharge measurement); minimum dally prior to construction of Gunnlson tunnel not

determined; no flow Oct. 8, 1949, Sept. 5, 6, 15, 16, 1950.

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

which are fair. Record of diversion through Gunnlson tunnel during water year 1949-50 

is given below:

Month

October 

March 

April 

May

Runoff In 

acre-feet

25,590 

1,700 

44,180 

58,200

Month

June 

July 

August 

September

Runoff In 

acre-feet

55,200 

59,360 

58,920 

49,380

Cooperation. Record of diversion through Gunnison tunnel furnished by Uncompahgre Valley 

Water users Association.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

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

Oct.

114 

137 

122 

114 

83

64

alO 

aO 

alO 

120

158 

158 

184 

276 

28O

264 

3 2O 

367 

426 

480

502 

448 

43O 

448 

444

448 

444 

349 

421 

535 

516

Hov.

655 

665 

660 

65O 

645

64O 

625 

63O 

655 

695

725 

675 

605 

645 

690

70O 

665 

65O 

640 

615

590 

565 

565 

650 

670

635 

610 

625 

640 

650

Dec.

506 

475 

421 

394 

362

394

535 

550 

*615 

625

320 

362 

288 

a30O 

a320

3390 

3420 

a440 

a46O 

a460

3460 

3440 

3420 

3380 

a360

a350 

340 

340 

340 

350 

360

Jan.

36O 

37O 

380 

380 

38O

380 

370 

36O 

360 

350

360

36O 

380 

400 

410

410 

*410 

410 

41O 

400

400 

380 

370 

360 

370

380 

370 

360 

35O 

35O 

360

Feb.

380 

38O 

37O 

360 

380

420 

43O 

430 

430 

430

42O 

410 

420 

430 

43O

43 O 

*420 

410 

400 

410

410 

420 

420 

,430 

44O

430 

420 

42O

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194 3 .......................

h.......................................

ter year 1949-50 .......................

Mar.

410 

410 

400 

410 

420

430 

440 

43O 

420 

410

410 

400 

40O 

39O 

380

380 

38O 

360 

3OO 

*4OO

390 

420 

36O 

370 

370

380 

385 

430 

421 

448 

502

Apr.

511 

635 

8OO 

60O 

585

83O 

974 

1,220 

1,190 

818

516 

426 

69O 

1.18O 

1,450

1,170 

1,180 

1,590 

1,65O 

1,540

1,980 

2,640 

2,980 

2,920 

2,260

2,080 

2,080 

1,91O 

1,980 

1,670

Secondfoot-days

8,672 

19,33O 

12,977

576,100

11,690 

11,580 

12,456 

42, 055 

62,410 

100,810 

16,249 

6,168 

1,589

305,986

Peak discharge 'base, 6,OOO sec. -ft.). Ho peak above

May

1,510 

1,590 

1,980 

2,300 

1,980

1,620 

1,330 

1,150 

93S 

794

848 

1,080 

1,240 

1,3OO 

1,64O

1,940 

2,270 

2,580 

2,480 

2,250

2,4OO

2,930 

3,360 

3,570 

3,290

2,740 

2,260 

2,19O 

1,930 

1,980 

2,94O

Maximum

535 

725 

625

12,100

410 

440 

502 

2,980 

3,570 

5,030 

1,520 

372 

137

5,030

base.

June

3,900 

4,41O 

4,51O 

3,750 

3,070

3,370 

3,9EO 

3,60O

3,150 

3,170

3,570 

4,200 

5,030 

4,110 

3,940

4,OOO 

4,100 

4,O5O 

3,77O 

3,27O

3.OOO 

3,050 

2,80O 

2,46O 

2,500

2,360 

2,160 

2,020 

1,86O 

1,710

July

Minimum

O

565 

288

O

350 

360 

300 

426 

794 

1,710 

10 

88 

O

O

1,520 

1,370 

1,24O 

1,O8O 

938

755 

650 

710 

776 

745

83O 

782 

615 

457 

448

484 

380 

416 

403 

3OO

218 

10O 

68 

78 

al5

alO 

106 

187 

242 

171 

155

Aug.

194 

214 

222 

256 

264

304 

372 

272 

208 

168

146 

228 

260 

232 

2OO

180 

168 

122 

108 

184

211 

218 

208 

194 

2OO

184 

180 

149 

131 

103 

88

Mean

280 

644 

419

1,578

377 

414 

402 

1,402 

2,O13 

3,36O 

524 

199 

53.0

838

Sept.

72 

7O

58 

alO 

aO

aO 

alO 

62 

122 

125

118 

103 

88 

32 

O

30

30 

32 

45 

137

93

54 

2O 

40 

83

66 

3O 

36 

15 

38

Runoff In 

acre-feet

\7,20O 

38,340 

25,740

1,143,000

23,19O 

22,970 

24,710 

83,410 

123,800 

2OO, OOO 

32,23O 

12,230 

3,150

607, OOO

Winter dlsehsrge measurement made on this day. 

s Ho gsge-height record; dischsrge computed on basis of recorded range in stage, records of diversions, weather records, and records for stations on nearby streams. 

Hote. Stage-discharge relstion sffected by Ice Dec. 27 to Mar. 26.
126 GDNNISON RIVER BASIN

Gunnison River near Grand Junction, Colo.

Location.--Water-stage recorders on river and canal, lat. 39°02', long. 108°34', in NWij 

 sec. 35, T. 1 S., R. 1 W. Ute meridian, half a mile downstream from point of diversion

of Redlands power canal and 2 miles upstream from mouth and Grand Junction. Datum of

river gage is 4,555.14 feet above mean sea level, datum of 1929.

Drainage area.--8,020 square miles.

Records available. October 1894 to December 1895 (gage heights only), October 1896 to 

September 1899 (at site near mouth), October 1901 to September 1906 (at site at Whitewater), October 1916 to September 1950 (at present site).

Average discharge (river and power canal). 42 years (1896-99, 1901-6, 1916-50), 2,758 

second-reet.

Extremes (combined flow of river and power canal). Maximum discharge during year, 8,240 

second-feet Apr. 24; minimum daily, 418 second-feet Sept. 4, 5.

1896-99, 1901-6, 1916-50: Maximum discharge observed, 35,700 second-feet May 23, 

1920 (gage height, 14.95 feet), from rating curve extended above 21,400 second-feet; 

minimum daily, 106 second-feet July 20, 1934.

Remarks. Records excellent except those for Dec. 9-12, Dec. 18 to Feb. 16, which are fair. 

Diversions above station for irrigation. Combined flow of river and Redlands power 

canal minus about 40 second-feet diverted during irrigation season represents entire 

flow that enters Colorado River from Gunnison River Basin. Records include flow of 

power canal. Records of chemical analyses and water temperatures for the water year 

1950 are given in Water-Supply Paper 1189.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

919 

959 

937 

937 

906

892 

847 

808 

843 

919

1,030 

1,110 

1,180 

1,220 

1,260

1,250 

1,240 

1,290 

1,380 

1,490

1,480 

1,440 

1,350 

1,300 

1,260

1,200 

1,180 

1,190 

1,180 

1,240 

1,270

Nov.

1,240 

1,200 

1,240 

1,290 

1,240

1,230 

1,310 

1,200 

1,200 

1,250

1,340 

1,420 

1,310 

1,200 

1,250

1,330

1,320 

1,270 

1,260 

1,240

1,220 

1,200 

1,170 

1,140 

1,200

1,260 

1,200 

1,170 

1,170 

1,170

Dec.

1,130 

1,070 

1,010 

978 

919

888 

906 

*1,000 

940 

980

1,030 

1,000 

910 

794

777

657 

807 

820 

930 

940

780 

860 

780 

850 

860

860 

810 

780 

750 

730 

750

Jan.

780 

810 

830 

780 

*712

690 

680 

690 

720 

740

810 

830 

880 

950 

1,000

980 

880 

860 

880 

950

980 

980 

1,000 

1,020 

1,050

1,000 

910 

880 

950 

*1,050 

1,070

Feb.

1,000 

960 

960 

960 

1,000

,060 

,120 

,210 

,200 

,180

,020 

,070 

1,060 

970 

930

960 

946 

928 

946 

964

1,010 

1,040 

978 

946 

969

992 

1,000 

1,090

Month

Octo 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949 

at*y

uary

ter year 1949-50 .......................

Mar.

1,17.0 

1,120 

1,060 

1,030 

1,030

1,030 

1,060 

1,010

964 

982

987 

1,010 

977 

923 

928

982 

973 

959 

1,010 

982

997 

1,020 

926 

934

986

1,020 

1,020

748 

856 

*888 

862

Apr.

871 

928 

1,340 

1,810 

1,550

1,470 

1,760 

2,420 

3,660 

3,280

2,340 

1,830 

1,840 

2,580 

3,420

3,490

3,060 

3,520 

4,500 

4,580

4,980 

6,370 

7,500 

7,920

6,870

5,570 

5,540 

5,460 

5,100 

4,930

Secondfoot -day s

35,507 

37,140 

27,296

1,069,164

27,342 

28,469 

30,444 

110,489 

155,910 

160,980 

44,277 

18,545 

23,022

699,421

Peak discharge (base, 10,000 sec. -ft. . No peak above

May

4,120 

3,980 

4,700 

5,670 

5,780

4,600 

3,840 

3,340 

3,030 

2,700

2,620 

3,180 

3,890 

4,180 

4,710

5,360 

5,920 

6,440 

6,460 

6,320

6,180 

6,700 

7,180 

7,520 

7,430

6,630 

5,280 

4,660 

4,580 

4,210 

4,700

Maximum

1,490 

1,420 

1,130

18,500

1,070 

1,210 

1,170 

7,920 

7,520 

7,630 

2,570 

748 

1,280

7,920

base.

June

6,350 

7,430 

7,630 

7,300 

5,950

5,390 

5,990 

6,330 

5,570 

5,060

5,340 

6,100 

6,750 

6,500 

5,980

5,910 

6,070 

6,160 

5,900 

5,260

4,640 

4,410 

4,600 

4,040 

3,740

3,840 

3,590 

3,290 

3,050 

2,810

Minimum

July

2,570 

2,400 

2,190 

2,060 

1,880

1,710 

1,540 

1,590 

1,870 

2,020

1,950 

2,020 

1,890 

1,630 

1,460

1,400 

1,460 

1,400 

1,530 

1,450

1,260 

1,050 

883 

742 

680

640 

587 

558 

551 

630 

676

808 

1,140

657

520

680 

928 

748 

871 

2,620 

E,810 

551 

456 

418

418

Aug.

619 

556 

572 

624 

624

634 

670 

725 

748 

652

628 

619 

579 

715 

719

673 

604 

566 

540 

492

456 

481 

511 

543 

550

558 

592 

617 

599 

557 

522

Mean

1,145 

1,238 

881

 ' 2,929

882 

1,017 

982 

3,683 

5,029 

5,366 

1,428 

598 

767

1,916

Sept.

514 

479 

445 

418 

418

444 

435 

460 

512 

580

640 

720 

731 

741 

767

739 

761 

758 

734 

1,030

1,280 

1,210 

1,160 

1,130 

1,080

1,030 

1,040 

1,010 

892 

864

Runoff In 

acre-feet

70,430 

73,670 

54,140

2,121,000

54,230 

56,470 

60,380 

219,200 

309,200 

319,300 

87,820 

36,780 

45,660

1,387,000

winter discharge measurement made on this day. 

Note. Stage-discharge relation at river station affected by Ice Dec. 9-12, Dec. 18 to Feb. 16. No 

gage-height record for river station Jan. 24-29, Aug. 23 to Sept. 11; discharge computed on basis of 

discharge measurement made Sept. 5 (which represents seepage and leakage from canal diversion) and 

records for Redlands power canal.
GUNNISON RIVER BASIN 127

East River near Crested Butte, Colo. 

Location.--Water-stage recorder, lat. 38°52', long. 106°54', in NE-f sec. "5, T. 14 S., R.

85 W., at highway bridge, 1.2 miles downstream from Brush Creek and 4? miles east of

Crested Butte.

Drainage area.--89.2 square miles. 

Kecprds available. April 1941 to September 1950 (no winter records in 1942). (April to

November 194(Ffor station 1 mile downstream in files of Bureau of Reclamation.) 

Extremes.--Maximum discharge during year, 960 second-feet June 16 (gage height, 2.55 feet),

minimum daily, 12 second-feet Mar. 16.

1941-50: Maximum discharge, 1,270 second-feet May 19, 1948 (gage height, 2.88 feet);

minimum daily, that of Mar. 16, 1950. 

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

wnich are fair. Several small diversions above station for irrigation. 

Revisions.--Revised figures of discharge, in second-feet, for April 1941, superseding those

published in Water-Supply Paper 929, are given herewith:

Apr. 1 Apr. 

2 

3 

4

I 

7 

8

9 

10..

Month

AF

11 1 

12 

13 

14 . 35 

15 

16 

17 

18.......... 37

19.......... 35

Apr

fcT-fays «-*"-

1,288 150

21 .......... 39

22.......... 52

25.......... 3S

28.......... 120

29.......... 110

Minimum Mean

42.9

Runoff in 

acre-feet

2,550 

89,550

Note. No gage-height record Apr. 1-30, discharge computed on basis of 1 discharge measurement and records for stations on nearby streams. 

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

50 

46 

43

41 

41

43 

41 

41 

57 

50

49 

50 

51 

49 

47

46 

50 

58 

54 

48

49 

43 

44 

43 

40

40 

40 

38 

39 

39 

38

Nov.

*38 

31 

31 

31 

30

29 

29 

31 

34 

34

34 

31 

b35 

b36 

b40

b34 

b35 

b35 

35 

34

34 

32 

36 

34 

33

33 

34 

31 

29 

26

Dec.

29 

29 

b29 

b30 

b27

b28 

*29 

b26 

24 

26

b25 

24 

23 

23 

23

24 

26 

28 

28 

27

26 

25 

25 

25 

25

25 

25 

25 

25 

25 

25

Jan.

27 

29 

28 

26 

25

25 

25 

25 

27 

25

25 

25 

25 

24 

24

23 

23 

23 

83 

23

23 

24 

24 

25 

24

22 

21 

23 

84 

35 

35

Feb.

24 

23

19 

16 

14

14 

15 

15 

14 

14

14 

15 

15 

14 

13

13 

13 

13 

13 

13

14 

14 

13 

13 

13

13 

13 

15

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

14 

13 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

13 

13 

13

12 

13 

13 

13 

13

13 

13 

14 

13 

14

13 

13 

13

13 

14 

16

Apr.

17 

19 

20 

21 

20

23 

25 

34 

38 

36

34 

50 

*56 

64 

70

72 

82 

94 

102 

115

161 

216 

259 

225 

188

191 

181 

183 

181 

171

May

199 

248 

279 

256 

196

176 

166 

164 

161 

168

219 

292 

370 

454 

526

550 

599 

538 

490 

496

578 

683 

732 

690 

550

412 

337 

315 

310 

448 

648

Second- MO V I , foot-days Maximum

1,408 58 

989 40 

804 30

52,049 1,120

760 29 

412 24 

409 16 

2,948 259 

12,250 732 

18 , 230 800 

5,703 370 

1,874 83 

1,383 65

47,170 800

June

732 

732 

662 

544 

662

746 

718 

578 

532 

606

690 

739 

746 

753 

732

746 

800 

739 

641 

571

571 

544 

424 

484 

472

424 

436 

424 

400 

382

July

370 

332 

332 

270 

256

241 

248 

266 

245 

225

219 

210 

191 

178 

168

166 

156 

168 

152 

136

130 

124 

118 

112 

108

107 

103 

99 

98 

91 

84

Aug.

83 

78 

77 

74 

72

78 

78 

70 

65 

66

69 

70 

63 

62 

60

60 

57 

54 

53 

52

51 

49 

48 

48 

51

56 

52 

48 

45 

43 

42

Minimum Mean

38 45.4 

26 33.0 

23 25.9

17 143

21 24.5 

13 14.7 

12 13.2 

17 . 98.3 

161 395 

382 608 

84 184 

42 60.5 

37 46.1

12 129

Peak discharge (base, 870 sec. -ft.) . June 1 (11 p.m.) 904 sec. -ft.; June 16 (12 p.m.)

Sept.

42 

41 

39 

39 

40

41 

42 

41 

52

49

52 

62 

65 

58 

51

46 

43 

44 

45 

63

52 

47 

44 

45 

44

42 

40 

39 

38 

37

Runoff in 

acre-feet

2,790 

1,960 

1,590

103,200

1,510 

817 

811 

5,850 

24,300 

36,160 

11,310 

3,720 

2,740

93,560

960 sec. -ft

Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 12 to Apr. 12 (stage-discharge relation affected by ice during 

most of period) ; discharge computed on basis of 3 discharge measurements made 3 miles downstream, 

weather records, and records for stations on nearby streams.
128 aUNNISON RIVER BASIN

East River at Almont, Colo.

Location.--Water-stage recorder, lat. 38°40', long. 106°51', In sec. 22, T. 51 N., R. 1

 E., at Almont, 200 feet upstream from bridge on State Highway 135 and 400 feet upstream

from mouth. Datum of gage is 8,008.29 feet above mean sea level, datum of 1929.

Drainage area. 295 square miles.

Records available. April to October 1905, July 1910 to April 1922, October 1934 to September i9tiU.

Average discharge. 23 years (1910-13, 1916-20, 1934-50), 349 second-feet.

Extremes . Maximum discharge during year, 1,770 second-feet June 2,-(gage height, 3.82 

reet); minimum daily, 52 second-feet Mar. 13, 19, 21, 28.

1905, 1910-22, 1934-50: Maximum discharge observed, 6,500 second-feet June 15, 1921 

(gage height, 6.6 feet, site and datum then in use), from rating curve extended above 

3,000 second-feet; minimum daily, 19 second-feet Aug. 13, 1913.

Remarks. 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 1949-5O, except period of ice effect 

(gage height, in feet, and discharge, in second-feet) 

(Shifting-control method used Oct. 1-8)

0.6 

.7

1.0 108

1.1 133

1.3 192

1.6 300

Z.O 465

2.6 780

3.3 1,300

3.9 1,840

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

84 

79 

75 

76 

83

86 

81 

81 

86 

89

86 

91 

97 

106 

104

1O4 

113 

125 

130

115

HO 

1OO 

102 

102 

1O6

104 

104 

127 

125 

125 

113

Nov.

118 

113 

1O6 

1OO 

1OO

1OO 

98 

104 

115 

113

115 

93 

100 

1O4

113

98 

1OO 

97 

93 

89

86 

81 

83 

97 

86

86 

86 

86 

81 

73

Dec.

72 

64 

69 

76 

72

79 

81 

69 

*83 

83

72 

80 

80 

80 

80

80 

83 

84 

84 

82

77 

76 

74 

74 

74

75 

76 

76 

76 

75 

75

Jan.

80 

85 

85 

82 

78

7S 

75 

76 

84 

78

78 

*78 

78 

82 

78

76 

76 

76 

76 

76

76 

76 

76 

80 

76

73 

12 

72 

76 

77 

78

Feb-.

72 

72 

64 

56 

58

6O

*65 

62 

58 

55

56 

58 

58 

57 

56

56 

56 

56 

56 

58

58 

54 

55 

56 

57

58 

59 

59

Month

Ooto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ai*y

ter year 1949-5O .......................

Peak discharge (base, 1.6OO sec. -ft. ). Ma

sec. -ft. j June 7 (4 a.m.; 1,680 sec. -ft.; Ju

Mar.

57 

58 

59 

57 

57

57 

56 

56 

 59 

57

57 

57 

52 

57 

58

54 

56 

57 

52 

58

52

56 

57 

54 

58

56 

54 

52 

54 

53 

57

Apr.

64 

73 

76 

66 

68

84 

98 

135 

141 

125

118 

12O 

155 

213 

252

230 

27 O 

348 

360 

400

540 

726 

871 

794 

620

625 

600 

575 

590 

535

Secondfoot-days

3,109 

2,914 

2,381

123,593

2,4O5 

1,645 

1,734 

9,872 

28,600 

38,498 

12 , 1O5 

4,6O3 

2,930

110,796

y 23 (4 a.m. 

ne 12 (4:30

May

57 O 

676 

822 

8Z2 

645

565 

53O 

510 

485 

465

56O 

665 

732 

9O6 

1,110

1,160 

1,27O 

1,250 

1,140 

1,130

1,250 

1,410 

1,49O 

1,480 

1,32O

1,050 

864 

794 

750 

899 

1,280

Maximum

130 

118 

84

2,570

85 

72 

59 

871 

1,490 

1,66O 

744 

238 

150

1,660

) 1,600 sec. 

a.m.) 1,640

June

1,570 

1,66O 

1,620 

1,39O 

1,390

1,57O 

1,590 

1,420 

1,24O 

1,280

1,430 

1,530 

1,530 

1,520 

1.49O

1,490 

1.48O 

1,450 

1,300 

1,16O

1,130 

1,140 

947 

955 

990

92O 

885 

85O 

815 

756

July

744 

67O 

67O 

61O 

565

515 

515 

565 

555 

515

510 

475 

429 

392 

368

368 

348 

356 

340 

320

296 

277 

258 

241 

220

192 

170 

167 

155 

155 

144

Minimum

75 

73 

64

54

72 

54 

5Z 

64 

465 

756 

144 

95 

6O

52

-ft.; June 

sec. -ft.

Aug.

132 

130 

127 

120

152

2O6 

238 

2 2O 

199 

189

199 

199 

186 

ISO 

173

176 

167 

155 

146 

135

12O 

115 

1O6 

102 

106

110 

108 

110 

104 

98 

95

Mean

10O 

97.1 

76.8

339

77.6 

58.8 

55.9 

329 

923 

1,280 

390 

148 

97.7

3O4

Sept.

91 

87 

86 

83 

73

63 

61 

6O 

76 

78

90 

100 

118

no

102

97 

92 

92 

110 

150

138 

125 

120 

115 

11Z

1O8 

102 

1OO

96 

95

Runoff in 

acre-feet

6,170 

5,780 

4,72O

245,100

4,77O 

3,260 

3.44O 

19,580 

56,730 

76,36O 

24,010 

9,130 

5,810

219,800

2 (3:30 a.m.) 1,77O

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Dec. 12 to Feb. 28. No gage-height record Sept. 

9-30; discharge computed on basis of weather records and records for stations on nearby streams.
GDNNISON RIVER BASIN 129

Slate River near Crested Butte, Colo.

Location, Water-stage recorder, lat. 38°52', long. 106°58', in sec. 2, T. 14 S., R. 86 

w., naif a mile downstream from Coal Creek and 1 mile east of Crested Butte. Datum of 

gage Is 8,826.88 feet above mean sea level, datura of 1929.

Drainage area. 69.0 square miles.

Records available. April 1941 to September 1950. 

bureau or Keclamation.)

(April to November 1940 in files of

Extremes. Maximum discharge during year, 882 second-feet June 2 (gage height, 3.86 feet); 

minimum daily, 8.0 second-feet Feb. 19, 20, 23-27, Mar. 3-20.

1941-50; Maximum discharge observed, 1,240 second-feet May 13, 1941; maximum gage 

height, 4.13 feet May 22, 1948; minimum daily discharge, 3.9 second-feet Nov. 26, 1942.

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

wnicn are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

24 

20 

19 

17 

17

18 

16 

15 

26 

23

23 

23 

24 

26 

24

24 

32 

44 

4O 

32

32 

29 

30 

29

27

25 

24 

23 

23 

23 

19

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl

MA IT

June 

July 

Augu 

Sept

Ha

Nov.

 21 

21 

19 

19 

19

19 

18 

18 

19 

21

21 

19 

18 

17 

19

19 

18 

17 

16 

15

14 

13 

14 

15 

14

14 

14 

13 

13 

13

Dec.

13 

13 

13 

12 

11

12 *13 

13 

13 

13

12 

12 

12 

12 

12

13 

14 

15 

15 

14

13 

12 

11 

11 

11

11 

11 

11 

11 

11 

11

Jan.

12 

12 

11 

10 

10

10 

10 

1011 11

11

11 

11 11

11 11 

11 11 11

11 11 

11

12 

11

11 

11 

11 

11 

11 

11

Month

Feb.

10 

10 

10 

10 

10

11

11 

10 

9.2

9.5 

10 

10 

1O 

10

9.0 

8.8 

8.4 

8.0 

8.0

8.6 

8.6 

8.0 

8.0 

8.0

8.O 

8.0 

8.8

lendar year 194S

ter year 1949-50 .......................

Mar.

8.6 

8.4 

8.0 

8.0 

8.0

8.0 

8.0 

*8.O 

8.0 

8.0

8.0 

8.0 

8.0 

8.0 

8.O

8.0 

1 8.O 

8.0 

8.O 

8.O

8.2 

8.6 

9.0 

9.0 

9.0

9.2 

1O 

10 

10 

1O 

10

Apr.

15 

19 

20 

*20 

20

23 

30 

36 

41 

38

35 

39 

49 

91 

109

100

125 

163 

185 

210

273 

346 

374 

326 

280

28O 

279 

249 

255 

234

Secondfoot-days

771 

510 

381

50,960.5

339 

259.9 

264.0 

4,264 

13,646 

17,940 

4,946 

718 

697.0

44,735.9

May

252 

309 

360 

343

264 

Z25 

213 

208 

225

Z67 

326 

354 

461 

546

580 

625 

605 

565 

555

635 

728 

758 

722 

630

429 

364 

343 

346 

457 

660

Maximum

44 

21 

15

1,080

12 

11 

10 

374 

758 

833 

329 

39 

62

833

June

784 

833 

819 

660 

650

758 

784 

672 

575 

610

688 

74O 

740 

716 

699

694 

666 

650 

565

501

496 

483 

393

417 

437

417 

401 

382 

364 

346

Minimum

July

329 

303. 

294 

261 

237

228 

231 

243 

234 

222

225 

199 

176 

155 

142

145 

137 

150 

135 

116

102 

97 

86 

82 

77

69 

64 

60 

54 

49 

44

15 

13

11

8.0

10 

8.0 

8.0 

15 

208 

346 

44 

11 

9.5

8.0

Aug.

39 

35 

35 

31 

31

35 

36 

32 

29 

26

31 

37 

30 

23 

21

20 

20 

19

16 

16

16 

15 

14 

14 

14

19 

15 

13 

13 

12 

11

Mean

24.9 

17.0 

12.3

14O

10.9 

9.28 

8.52 

142 

440 

598 

160 

23.2 

23.2

123

Sept.

10 

10 

10 

9.5 

9.5

12 

13 

12

16 

16

18 

27 

35 

29 

23

20 

19 

20 

22

62

46 

42 

36 

33 

31

26 

24 

23

22

21

Runoff in 

acre-feet

1,530 

1,010 

756

101,100

672 

516 

524 

8,460 

27,070 

35,580 

9,810 

1,420 

1,380

88,730

Peak discharge (base, 950 sec. -ft.). No peak above base.

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Nov. 13 to Dec. 2, Apr. 4-13. Ho gage-height record Dec. 3 to Apr. 3 (stage-discharge relation affected by ice during most of period), Apr. 25, 26; 

discharge computed on basis of 4 discharge measurements, weather records, and records for stations 

on nearby streams.
130 GUNNISON RIVER BASIN

Cement Creek near Crested Butte, Colo.

Location.--Water-stage recorder, lat. 38°50', long. 106°50', in sec. 13, T. 14 S., R. 85 

w., near Pioneer Resort, l£ miles upstream from Ward Gulch and 9 miles southeast of 

Crested Butte.

Drainage area.--27.7 square miles.

Records available. November 1910 to November 1913, April 1941 to September 1950. (April 

to Beptemoer 1940 in files pf Bureau of Reclamation.)

Average discharge.--12 years (1910-13, 1941-50), 37.3 second-feet.

Extremes. Maximum discharge during year, 189 second-feet June 6 (gage height, 2.67 feet); 

minimum daily, 4.5 second-feet Mar. 13, 14.

1910-13, 1941-50: Maximum discharge, 358 second-feet June 2, 1948 (gage height, 

3.47 feet), from rating curve extended above 255 second-feet by logarithmic plotting; 

minimum daily, that of Mar. 13, 14, 1950.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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.

20 

19 

18 

18 

18

18 

18 

18 

22 

20

19 

19 

19 

19 

18

18 

19 

20 

19

17

17 

17 

17 

17 

17

16 

16 

16 

16 

16 

16

Nov.

*15

15 

16 

15 

15

15 

15

15 

16 

16

15 

b!4 

b!3 

12 

15

15 

14 

14 

14 

13

13 

13 

13 

13 

12

1Z 

12 

12 

12 

12

Dec.

12 

11 

11 

11 

10

11

*12 

12 

12 

12

11 

11 

11 

11 

11

11 

11 

12 

12 

12

11 

10 

10 

10 

10

10 

10 

10 

10 

10 

10

Jan.

12

13 

12 

11 

11

11 

11 

11 

13 

11

12 

*13 

13 

13 

13

12 

13 

13 

13 

13

13 

13 

13 

15 

10

10 

9.0 

9.8 

10 

10 

10

Feb.

10 

9.6 

9.0 

9.4 

10

11 

*12 

11 

10 

8.2

8.2 

8.8 

8.2 

7.4 

6.8

6,0 

5,8 

5.2 

5.0 

5.0

5.6 

5.0 

4.9 

5.0 

5.0

5.0 

5.0 

5.6

Month

Octo 

Nove 

Dece

ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

wa

lendar year 1949

ter year 1949-5O .......................

Mar.

^.0 

5.0 

5.0 

5.0 

5.0

4.9 

4.9 

 4.9 

5.0 

5.0

5.0 

4.7 

4.5 

4.5 

4.9

5,0 

5.2 

5.4 

5.6 

5.6

5.6 

6.0 

6.2 

6.4 

-7.0

7.0 

7.0 

7.0 

7.0 

*b8.0 

b8.6

Apr.

b9.0 

bio 

blO 

*blO 

blO

bll 

b!3 

b!4 

14 

13

12 

12 

16 

18 

17

16 

20 

22 

20 

Z4

30 

36 

36 

34 

30

32 

32 

32 

31 

30

Secondfoot-days

557 

416 

338

13,743

366.8 

207.7 

175.9 

614.0 

2,105 

3,272 

1,292 

668 

489

10,501.4

May

32 

38 

46 

45 

38

35

35 

35 

35 

37

46 

56 

61 

68 

78

86 

94 

88 

81 

86

99 

109 

119

94 

81

71 

67 

69 

72 

90 

114

Maximum

22 

16 

12

240

15 

12 

8.6 

36 

119 

150 

62 

28 

20

150

June

134

138 

126 

119 

128

150 

144 

130 

126 

134

138 

125 

117 

116 

117

119 

117 

109 

102 

96

93 

92

86 

84 

80

76 

74 

71 

67 

64

July

62 

60 

56 

54 

51

50 

54 

54 

50 

49

47 

44 

42 

42 

41

42 

40 

40 

37 

36

54 

34 

32 

32 

32

31 

30 

30 

30 

28 

28

Minimum

16 

12 

10

io

9.0 

4.9 

4.5 

9.0 

32 

64 

28 

16 

14

4.5

Aug.

28 

27 

28 

26 

26

26 

26 

25 

24 

25

25 

24 

22 

21 

21

20 

20 

20 

19 

19

19 

18 

18 

18 

18

19 

18 

18 

17 

17 

16

Mean

18.0 

13.9 

10.9

37.7

11.8 

7.42 

5.67 

20.5 

67.9 

109 

41.7 

21.5 

16.3

28.8

Sept.

16 

16 

15 

15 

15

15 

15 

16 

19 

17

18 

19 

20 

19

17

16 

16 

16 

16 

18

17 

16 

16 

16 

16

IS 

15 

15 

15 

14

Runoff In 

acre-feet

1,100 

825 

670

27,250

728 

412 

349 

1,220 

4,180 

6,490 

2,560 

1,320 

970

20,820

Peak discharge (base, 160 sec.-ft.). June 1 (9 p.m.) 172 sec.-ft.; June 6 (8 p.m.) 189 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 14 to Mar. 29 (stage-discharge relation affected by Ice during 

entire period); discharge computed on basis of 4 discharge measurements, weather records, and records 

for stations on nearby streams.
GUNNISON RIVER BASIN 131

Ohio Creek near Baldwin, Colo.

Location.--Water-stage recorder, lat. 38°42', long. 107°00', In SW£ sec. 34, T. 15 S., R. 

Bb W., 800 feet downstream from Mill Creek and 5| miles southeast of Baldwin.

Drainage area.--124 square miles.

Records available.--April 1941 to September 1950 (discontinued). April to November 1940 

in riles or iiureau of Reclamation.

Extremes.--Maximum discharge during year, 493 second-feet May 22 (gage height, 2.77 feet); 

minimum daily, 14 second-feet Mar. 13, 14, 27.

1941-50: Maximum discharge, 1,260 second-feet May 19, 1948 (gage height, 4.65 

feet), from rating curve extended above 560 second-feet by logarithmic plotting; minimum daily, 10 seconfl-feet Dec. 31, 1944, Jan. 3, 1945, Jan. 17-26, 1947.

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

which are fair. Many small diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

23 

22 

21 

21 

21

21 

21 

21 

27

Z6

27 

*26 

27 

26 

24

24 

28 

31 

29 

27

26 

26 

29 

28 

26

26 

25 

24 

25 

24 

21

Nov.

23

*23 

22 

22 

22

22 

22 

23 

22 

22

22 

19 

21 

22 

23

22 

22 

22 

22

22

22 

22 

23 

25 

22

22

22 

22 

20 

18

Dec.

ZO 

18 

18 

18 

18

18 

*19 

19 

19 

19

19 

19 

19 

19 

19

19 

19 

19

ZO

20

19 

19 

19 

20 

20

20 

20 

19 

19 

19 

20

Jan.

2O 

20 

20 

19 

19

18 

18 

18 

19 

19

18

ZO *zo

19

20

20 

20 

ZO 

21 

21

20 

20 

20 

21 

20

19 

19 

19 

20 

20 

21

Feb.

21 

20 

19 

21 

21

21 

*21 

21 

ZO 

2O

21

21 

21 

20 

20

19 

18 

18 

18 

18

19 

18 

18 

18 

19

19 

18 

17

Month

Octo 

Move 

Dece

Ca

janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

17 

17 

17 

17 

17

*17 

18 

17 

16

16

16 

15 

14 

14 

15

15 

15 

15 

16 

16

15 

15 

15 

15 

15

15 

14 

15 

 15

17 

16

Apr.

19 

21 

27 

25 

*30

45 

64 

80 

78 

68

62 

68 

94 

146 

127

129 

170 

190 

180 

205

277 

325 

325 

271 

212

226 

229 

212 

212 

195

Secondfoot-days

773 

658 

592

38,400

608 

545 

487 

4,312 

9,739 

9.631 

2,757 

958 

56O

31,620

May

208 

265 

316 

307 

238

205 

192 

190 

185 

190

235 

286 

313 

343 

382

397 

412 

409 

40O 

388

4O6 

424 

424 

4O3 

373

307 

289 

286 

265 

313 

388

Maximum

31 

25. 

20

751

21 

21 

18 

325 

424 

430 

178 

42 

24

430

June

418 

430 

430 

343 

331

382 

385 

340 

301 

319

361 

382 

370 

367 

361

376 

379 

358 

319 

295

295 

280 

250 

259 

253

229 

218 

210 

2OO 

190

July

178 

165 

151 

132 

127

117 

132 

153 

129

124

146 

112 

92 

88 

84

84 

78 

75 

75 

61

55 

47 

42 

40 

41

38 

40 

40 

39 

38 

34

Minimum

21 

18 

18

16

18 

17 

14 

19 

185 

190 

34 

20 

15

14

Aug.

33 

30 

30 

30 

33

38 

38 

36 

35 

34

40 

42 

36 

36 

35

34 

33 

31 

30 

29

27 

27 

26 

26 

29

29 

26 

22

21 

20

Mean

24.9 

21.9 

19.1

105

19.6 

19.5 

15.7 

144 

314 

321 

88.9 

30.9 

18.7

86.6

Sept.

2O 

19 

19 

18 

18

18 

20 

20 

24 

20

21 

24 

24 

22 

20

19 

17 

16 

16 

20

17 

17 

17 

17 

18

17 

16 

16 

15 

15

Runoff in 

acre-feet

1,530 

1,310 

1,170

76,160

1,210 

1,08O 

966 

8,550 

19,320 

19,100 

5,470 

1,900 

1,110

62,720

Peak discharge (base, 450 sec.-ft.).--May 22 (11:30 p.m.) 493 sec.-ft.; June 3 (3 a.m.) 490 sec.-

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Oct. 31 to Apr. 11 (no gage-height record Dec. 6 

to Mar, 28; discharge computed on basis of 4 discharge measurements, weather records, and records for 

stations on nearby streams).
132 GUNNISON RIVER BASIN

Ohio Creek near Gunnison, Colo.

Location. Water-stage recorder, lat. 38°35', long. 106°56', in sec. 23, T. 50 N., R. 

1 W., half a mile upstream from mouth and 2 miles northwest of Gunnison.

Drainage area. 150 square miles.

Records available.--October 1944 to September 1950 (discontinued).

Extremes.--Maximum discharge during year, 410 second-feet May 23 (gage height, 4.72 feet); 

minimum daily, 15 second-feet Jan. 14.

1944-50: Maximum discharge, 992 second-feet May 20, 1948 (gage height, 6.15 feet), 

from rating curve extended above 540 second-feet by logarithmic plotting; minimum 

daily, 12 second-feet Jan. 16, 1947.

Remarks. Records good except those for periods of ice effect, which are fair. Diversions 

above station for irrigation.

Revisions (water years). W 1089: 1945.

Discharge, In second-feet, water year October 1349 to September 1950

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.

29 

26 

25 

24 

24

23 

23 

21 

24 

24

26 

26 

30 

29 

29

29 

32 

35 

35 

35

37 

34 

36 

37 

36

34

31 

31 

32 

32 

27

Nov.

28 

28 

27 

26 

26

26 

24 

26 

32 

31

34 

24 

26 

28 

32

27 

27 

26 

26 

26

26 

26 

27 

37 

28

27 

26 

27 

28 

22

Dec.

26 

20 

20 

20 

20

21 

25 

*24 

26

26

20 

19 

19 

b!9 

20

18 

19 

20 

21 

22

b20 

b!8 

b!9 

b!9 

b20

b!9 

*bl9 

b!9 

b!8 

b!8 

b!9

Jan.

20 

19 

19 

b!7 

b!8

b!6 

b!6 

b!7 

17

17

b!6 

17 

*16 

15 

b!6

*b!6 

16 

16 

17 

17

16 

17 

17 

19 

19

b!8 

b!7 

b!8 

b!8 

20 

20

Feb.

b20 

b!9 

b!6 

b!8

21

*21 

21 

20 

b!8 

b!7

21 

20 

20 

20 

b!9

b!7 

b!7 

b!8 

b!8 

b!9

20 

b21 

b20 

b21 1 22

24 

21 

22

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

20 

20 

20 

21 

21

*21 

23 

b20 

19 

19

18 

18 

b!7 

b!8

19

20 

21 

21 

22 

23

b22 

24 

24 

25 

25

25 

22 

25 

25 

25 

27

Apr.

35 

52 

66 

56 

*66

82 

98 

130 

130 

98

85 

89 

123 

163 

175

145 

186 

219 

195 

201

252 

315 

321 

306 

225

219 

237 

204 

207 

186

Secondfoot-days

916 

824 

633

40,937

537 

551 

670 

4,866 

7,939 

7,663 

3,044 

1,622 

1,062

30,327

May

183 

237 

288 

303 

240

204 

183 

183 

175 

163

195 

237 

249 

255 

303

288 

324 

326 

323 

309

323 

358 

358 

323 

306

267 

224 

218 

185 

185 

224

Maximum

37 

37 

26

742

20 

24 

27 

321 

358 

309 

168 

84 

61

358

June

267

281 

302 

270 

245

270 

298 

270 

236 

233

284 

309 

292 

288 

281

292 

309 

309 

298 

251

239 

251 

242 

209 

212

197 

194 

185

179 

170

July

168 

163 

158 

131 

128

120 

112 

133 

142 

135

144 

142 

120 

100 

94

94 

88 

104 

98 

88

74 

69 

57 

46 

36

38 

43 

56 

57 

52 

54

Minimum

21 

22 

18

18

is"!

16 

17 

35 

163 

170 

36 

26 

16

15

Aug.

50 

54 

63 

71 

78

84 

80 

73 

/ 69 

65

61 

73 

59 

59 

54

54 

54 

46 

43 

42

40 

38 

36 

36 

40

45

42 

32 

28 

27 

26

Mean

29.5 

27.5 

20.4

112

17.3 

19.7 

21.6 

162 

256 

255 

98.2 

52.3 

35.4

83.1

Sept.

24 

24 

22 

22 

16

16 

16 

17 

22 

22

24

32 

33

31

35 

38 

42 

48 

54

57 

54 

50 

52 

61

56 

46 

43 

43 

35

Runoff In 

acre-feet

1,820 

1,630 

1,260

81,210

1,070 

1,090 

1,330 

9,650 

15,750 

15,200 

6,040 

3,220 

2,110

60,170

Peak discharge (base, 450 sec. -ft.). Ho peak above base.

Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
GUNNISON RIVER BASIN

Castle Creek near Baldwin, Colo.

133

Location. Water-stage recorder, lat. 38°46', long. 107°06', in sec. 2, T. 15 S., R. 87 

w., if miles upstream from mouth and 2 miles southeast of Baldwin.

Drainage area.--17.-5 square miles.

Records available. October 1944 to September 1950, no winter records 1944-45 (dlscontinuea).

Extremes. Maximum discharge during year, 209 second-feet June 17 (gage height, 5.63 

FeeTfT; minimum not determined.

1944-50: Maximum discharge, 384 second-feet June 23, 1949, from rating curve extended above 90 second-feet; maximum gage height, 6.62 feet July 23, 1945; minimum 

discharge not determined.

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

which are poor. No diversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

4.2 

3.8 

4.0 

4.2 

4.5

4.5 

4.5 

5.2 

6.8 

6.5

7.2 

*9.0 

9.3 

9.0 

7.9

7.6 

9.3 

10 

9.0 

7.6

7.4 

7.8 

7.2 

6.8 

6.4

6.0 

5.6 

.5.6 

5.8 

5.2 

3.O

Nov.

(") 

4.5

Dec.

C) 

4.O

Jan.

4.2

Feb.

(") 

3.8

Month

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-50 ...............

Mar.

C)

4.2

Apr.

5.4 

6.6 

8.0 

6.2 

6.6

7.2 

8.4 

10 

10 

7.8

7.2 

8.0 

9.0 

*10 

10

9.1 

11 

14 

14 

15

19 

Z3 

27 

28 

26

25 

28 

28 

27 

27

Secondfoot-days

200.9 

135. 0 

124.0

12,660. 8

130.2 

106.4 

13O.2 

441.5 

2,390 

4,2Z3 

1,723 

449.2 

289.4

10,342. 8

May

35 

47 

54 

51 

44

38 

37 

37 

36 

34

43 

61 

67 

82 

86

96 

100 

107 

103 

103

112 

117 

117 

110 

97

82 

84 

8? 

88 

107 

133

Maximum

10

300

28 

133 

178 

102 

23 

14

178

June

150 

154 

139 

105 

115

150 

137 

121 

117 

137

162 

173 

169 

158 

152

160 

178 

173 

148 

137

143 

129 

123 

143 

139

129 

125 

123 

119 

115

July

1O2 

97 

96 

8S 

82

80 

79 

88 

80 

76

91 

70 

62 

56 

51

53 

44 

44 

42 

37

35 

32 

31 

Z9 

27

26 

27 

26 

25 

24 

23

Minimum

3.0

-

5.4 

34 

105 

23 

8.2 

7.O

-

Aug.

23 

22 

22 

21 

20

20 

19 

18 

17 

16

18 

2O 

16 

15 

14.

13 

13 

12 

11 

11

11 

10 

10 

10 

11

11 

10 

9.4 

9.1 

8.5 

8.2

Mean

6.48 

4.5 

4.0

34.7

4.2 

3.8 

4.2 

14.7 

77.1 

141 

55.6 

14.5 

9.65

28.3

Sept.

.9 

.6 

.3 

.0 

.0

9.1 

9.1 

10 

13 

9.7

11 

12 

13 

11 

10

9.7 

9.1 

9.1 

10 

14

10 

- 10 

9.7 

9.7 

10

9.4 

8.8 

8.8 

8.5 

7.9

Runoff in 

acre -feet

398 

268 

246

25,110

258 

211 

258 

876 

4,740 

8,380 

3,420 

891 

574

2O.520
134 GUNNISON RIVER BASIN

Tomlchi Creek at Sargents, Colo.

Location.--Water-stage recorder, lat. 38°24[, long. 106°25', in Sw£ sec. 21, T. 48 N., R. 

b jj., half a mile downstream from Marshall Creek and three-quarters of a mile south of 

Sargents.

Drainage area. 155 square miles.

Records available.--May 1917 to September 1922, April 1938 to September 1950.

Average discharge.--17 years, 6.5.6 second-feet.

Extremes.--Maximum discharge during year, 178 second-feet June 3; maximum gage height recorded, 2.20 feet Apr. 2 (ice jam); minimum daily discharge, 10 second-feet Aug. 30.

1917-22, 1938-50: Maximum discharge, 792 second-feet June 9, 1921 (gage height, 

4.05 feet, site and datum then in use), from rating curve extended above 600 secondfeet; minimum recorded, 6 second-feet Nov. 16, 1920.

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

which are fair. Diversions above station for irrigation.

Revisions.--W 859: Drainage area.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

33

31 

31 

31 

31

31 

31 

31 

38 

*38

42 

42 

40 

35 

33

33 

33 

33 

33 

35

35 

33 

33 

33 

35

33 

33 

33 

35 

29 

35

Nov.

36 

38 

*35 

30 

26

24

23 

23 

25 

27

27 

20 

24 

27 

26

25 

24 

24 

24 

24

24 

25 

25 

24 

24

24 

24 

24

23 

22

Dec.

22 

21 

21 

20 

19

*20 

20 

21 

21 

22

22 

22 

22 

21 

21

21 

21 

21 

22 

22

22 

22 

22 

23 

23

23 

23 

23 

23 

23 

23

Jan.

24

23 

23 

22 

22

22 

22 

22

23 

23

23 

23 

23 

24 

25

25 

*25 

25 

25 

25

25 

25 

25 

25 

24

23 

23 

23 

23 

23 

23

Feb.

22 

22 

22 

22

23

23 

24 

*25 

25 

25

24 

23 

23 

23

23

23 

23 

23 

23 

22

22 

22 

22 

23 

23

23 

23 

24

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 200 sec. -ft.). Ho D

Mar.

25 

25 

25 

24 

24

24 

*23 

23 

23 

23

23 

23 

23 

23 

23

24 

24 

24 

24 

25

25 

25 

25 

25 

26

26 

26 

*26 

27 

30 

35

Apr.

45 

52 

56

60 

60

*60 

80 

74 

72 

70

70 

72 

75 

82 

82

78 

78 

80 

78 

85

98 

118 

110 

118 

98

102 

105 

100 

108 

95

Secondfoot-days

1,052 

771 

672

28,823

731 

645 

771 

2,461 

3,063 

2,496 

902 

425 

404

14,393

May

92 

95 

*110 

105 

90

92 

86 

86

78 

78

78 

80 

84 

84 

90

96

105 

105 

110 

100

110 

120 

130 

130 

120

110 

100 

98 

95 

98 

108

Maximum

42

38 

23

378

25 

25 

35 

118 

130 

155 

38 

18 

19

155

June

110 

115 

155 

122 

115

115 

118 

112 

100 

98

98 

98 

95 

88 

85

82 

75 

72 

68 

66

63 

68 

63 

57 

52

50 

48 

42 

35

31

July

27 

27

33 

33 

31

33 

35 

35 

29 

29

31 

29 

33 

29 

27

27 

31 

38 

35 

31

31 

27 

26 

26 

27

26 

26 

27 

24 

21 

18

Minimum

29 

20 

19

19

22 

22 

23 

45 

78 

31 

18 

10 

11

10

Aug.

15 

14 

14 

13 

12

13 

12 

12 

12 

12

12 

15 

14 

14 

14

18 

16 

16 

15 

15

14 

14 

14 

14 

15

18 

15 

11 

11 

10 

11

Mean

33.9 

25.7

21.7

79.0

23.6 

23.0 

24.9 

82.0 

98.8 

83.2 

29.1 

13.7 

13.5

39.4

Sept.

11 

11 

11 

11 

11

11 

12 

14 

16 

12

11 

12 

14 

11 

11

11 

11 

11 

13 

14

15 

14 

15 

16 

19

19 

18 

17 

16 

16

Runoff In 

acre-feet

2,090 

1,530 

1,330

57,170

1,450 

1,280 

1,530 

4,880 

6,080 

4,950 

1,790 

843 

801

28,550

eak above base.

Winter discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Oct. 23, 24, Nov. 1, 3-9, Nov. 12 to Dec. 1, Mar. 28 

to Apr. 9. No gage-height record Dec. 2 to Mar. 27 (stage-discharge relation affected by ice most of 

period), May 7-28, Aug. 2-15, Sept. 17-30; discharge computed on basis of 4 discharge measurements, 

recorded range in stage, weather records, and records for stations on nearby streams.
GUNNISON RIVER BASIN 135

Tomichi Creek near Doyleville, Colo.

Location.--Water-stage recorder, lat. 38°25', long. 106°30', in NE^ sec. 22, T. 48 N., 

K. 4 E., a quarter of a mile downstream from Tie Creek and 6 miles southeast of 

Doyleville.

Drainage area. 228 square miles.

Records available.--November 1944 to September 1950 (discontinued).

Extremes.--Maximum discharge during year, 189 second-feet June 3 (gage height, 4.67 feet); 

minimum daily, 10 second-feet Aug. 29 to Sept. 6, Sept. 11, 14-18.

1944-50: Maximum discharge, 437 second-feet May 22, 1948 (gage height, 6.66 feet); 

minimum daily, that of Aug. 29 to Sept. 6, Sept. 11, 14-18, 1950.

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

which are fair. Diversions above station for irrigation.

Rating table, water year 1949-50, except period of lee effect 

(gage height, In feet, and discharge, In second-feet) 

(Shifting-control method used Oct. 1-4, Apr. 2-7)

2.8 8 3.9 77 

3.0 16 4.1 100 

3.3 31 4.6 178 

3.6 50

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7

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.

35 

33 

32 

32 

31

31 

32 

31 

36 

*37

38 

41 

41 

39 

38

37 

37 

38 

38 

36

35 

30 

36 

34 

33

32 

32 

32 

33 

37 

27

Nov.

33 

29 

*26 

23 

22

22 

22 

24 

28 

27

26 

20 

25 

27 

27

26 

25 

24 

24 

25

26 

26 

26 

26 

26

26 

26 

26 

25 

23

Dec.

22 

20 

19 

18 

16

*16 

19 

20 

22 

23

22 

21 

21 

20 

20

21 

22 

22 

23 

23

22 

22 

22 

23 

23

23 

23 

23 

23 

23 

23

Jan.

23 

23 

23 

22 

22

22 

22 

22 

23 

23

24 

24 

24 

24 

25

25 

*25 

24 

24 

24

25 

25 

25 

25 

24

24 

24 

24 

24 

24 

23

Feb.

23 

23 

23 

23 

23

24 

24 

*24 

25 

25

24 

24 

24 

24 

24

24 

24 

23 

23 

23

23 

22 

23 

24 

24

25 

25 

25

Month

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

mber. ...................................

lendar year 1949

ter year 1949-50 .......................

Mar.

25 

24 

24 

23 

23

23 

*23 

23 

24 

24

24 

24 

23 

24 

25

26 

27 

28 

28 

28

28 

29 

30 

31 

32

32 

32 

33 

35 

41 

45

Apr.

61 

62 

70 

74 

68

*87 

118 

112 

94 

77

69 

81 

9& 

98 

92

77 

78 

85 

78 

84

103 

121 

126 

128 

106

106 

114 

103 

120 

96

Secondfoot-days

1,074 

761 

660

30,906

735 

665 

861 

2,778 

3,290 

2,660 

868 

404 

379

15,135

May

93 

98 

114 

122 

99

92 

86 

87 

79 

81

80 

85 

87 

85 

98

102 

114 

118 

120 

110

121 

133 

146 

143 

136

130 

118 

102 

98 

98 

115

Maximum

41 

33 

23

368

25 

25 

45 

128 

146 

165 

39 

16 

19

165

June

122 

126 

165 

144 

124

130 

130 

121 

109 

102

102 

103 

100 

94 

89

87 

79 

74 

72 

68

65 

67 

67 

59 

53

49 

48 

44 

35 

32

July

28 

23 

26 

28 

30

33 

36 

39 

34 

29

32 

30 

32 

28 

27

26 

27 

38 

33 

30

29 

27 

24 

24 

26

24 

24 

24 

21 

18 

18

Aug.

16 

14 

14 

13 

12

12 

13 

12 

12 

12

12 

15 

14 

14 

14

15 

16 

15 

15 

14

13 

13 

12 

12 

13

14 

12 

11 

10 

10 

10

Minimum Mean

27 34.6 

20 25.4 

16 21.3

16 84.7

22 23.7 

22 23.8 

23 27.8 

61 92.6 

79 106 

32 88.7 

18 28.0 

10 13.0 

10 12.6

10 41.5

Sept.

10 

10 

10 

10 

10

10

11 

11

13 

12

10 

11 

11 

10 

10

10 

10 

10

11 

14

15 

14 

15 

16 

19

19 

18 

17 

16 

16

Runoff In 

acre-feet

2,130 

1,510 

1,310

61,300

1,460 

1,320 

1,710 

5,510 

6,530 

5,280 

1,720 

801 

752

30,030

Peak discharge (base, 220 sec.-ft.J. No peak above base.

Winter discharge measurement made on this day. 

Hote. Stage-discharge relation affected by Ice Nov. 2 to Mar. 31 (no gage-height record Jan. 18 

to Feb. 7; discharge computed on basis of weather records and records for stations on nearby streams).

207364 O - 52 - 10
136 GUNNISON RIVER BASIN

Tomlchi Creek at Parlin, Colo.

Location. Water-stage recorder, lat. 38°30', long. 106°44', in NWij sec. 23, T. 49 N., R. 

2~~E77 at Parlin, a quarter of a mile upstream from Quartz Creek.

Drainage area. 586 square miles.

Records available. November 1944 to September 1950.

Extremes. Maximum discharge during year, 373 second-feet Apr. 8 (gage height, 5.30 feet); 

minimum daily, 0.5 second-foot Sept. 10-12.

1944-50: Maximum discharge, 669 second-feet May 25, 1948 (gage height, 6.37 feet), 

from rating curve extended above 400 second-feet; minimum daily, that of Sept. 10-12, 

1950.

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

whTch are fair. Diversions above station for irrigation.

Rating table, water year 1949-50, except periods of Ice effect

(gage height, in feet, arid discharge, in second-feet)

(Shifting-control method used Oct. 22 to Nov. 27, Dec. 16-20,

Jan. 16-25, Mar. 29 to Apr. 17, Sept. 24-30)

2.8 0.2 3.4 15 4.3 111 

2.9 1.2 3.6 25 4.6 166 

3.0 2.9 3.7 32 4.9 232 

3.1 4.8 3.8 41 5.3 340 

3.2 7.2 4.0 66

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

23 

20 

19 

18 

19

20 

19 

19 

20 

20

23 

23 

23 

23 

22

22 

22 

23 

24 

24

24 

22 

25 

28 

30

30 

38 

42 

42 

42 

40

Nov.

39 

48 

*43 

42 

37

36 

35 

34 

48 

49

48 

36 

29 

36 

39

41 

37 

35 

31 

31

31 

35 

40 

41 

37

35 

37 

37 

39 

31

Dec.

28 

28 

32 

28 

28

*31 

30 

37 

28 

34

32 

29 

27 

26 

25

28 

26 

28 

30 

32

30 

26 

28 

30 

29

28 

29 

29 

28 

28 

28

Jan.

30 

30 

29 

28 

26

25 

26 

27 

27 

27

27 

28 

28 

28 

29

30 

*30 

29 

28 

28

29 

31 

30 

31 

28

28 

29 

29 

28 

27 

27

Feb.

27 

27 

27 

28 

28

28 

29 

*30 

30 

32

29 

30 

30 

30 

30

29 

29 

29 

29 

30

29 

28 

29 

31 

31

32 

32 

32

Month

Ooto 

Hove 

Dece

Ca

janu. 

Febn 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

uai*y

ter year 1949-50 .......................

Mar.

33 

33 

32 

32 

32

32 

*32 

31 

32 

32

33 

31 

30 

31 

32

34

36 

37 

38 

39

40 

40 

40 

40 

42

45 

45 

45 

*47 

56 

51

Apr.

57 

72 

154 

210 

248

230 

289 

319 

230 

174

133 

130 

150 

158 

162

141 

137 

144 

141 

135

154 

164 

166 

168 

148

142 

126 

121 

118 

114

Secondfoot -days

789 

1,137 

900

35,120

877 

825 

1,153 

4,835 

2,203 

1,126.9 

153.8 

119.3 

47.7

14,166.7

May

105 

101 

105 

111 

98

92 

84 

77 

62 

60

54 

39 

47 

53 

52

69 

70 

67 

67 

69

58 

62 

66 

82 

86

89 

77 

67 

57 

41 

36

Maximum

42 

49 

37

414

31 

32 

56 

319 

111 

100 

8.0 

6.5 

3.3

319

June

37 

51 

73 

100 

94

77 

70 

63 

58 

53

46 

43 

38 

34 

31

30 

24 

14

13 

16

17 

16 

18 

22 

21

19 

15

13 

11 

9.9

July

8.0 

6.7 

6.2 

5.5 

4.8

4.4 

4.2 

4.2 

4.0 

3.8

3.5 

2.9 

2.7 

2.7 

2.7

2.7 

3.1 

3.8 

4.0 

6.0

7.0 

7.0 

7.0 

6.0 

5.8

5.8 

6.0 

6.2 

6.0 

5.8 

5.3

Aug.

4.6 

4.6 

4.2 

5.0 

6.0

6.O 

6.5 

6.2 

5.3 

3.8

4.4 

6.2 

5.8 

3.8 

3.7

3.7 

3.5 

3.7 

3.7 

3.3

3.1 

2.7 

2.7 

2.6 

2.4

1.9 

2.6 

2.0 

1.9 

1.7 

1.7

Sept.

1.5 

1.4 

1.1 

.9 

.7

.6 

.6 

.6 

.6 

.5

.5 

.5 

1.0 

1.5 

1.7

1.7 

1.4 

1.7 

2.0 

1.9

1.5 

2.2 

2.7 

2.9 

3.1

2.2 

1.9 

2.4 

3.3 

3.1

Minimum Mean »£%£

18 25.5 1,560 

29 37.9 2,260 

25 29.0 1,790

14 96.2 69,660

25 28.3 1,740 

27 29.5 1,640 

30 37.2 2,290 

57 161 9,590 

36 71.1 4,370 

9.9 37.6 2,240 

2.7 4.96 305 

1.7 3.85 237 

.5 1.59 95

.5 38.8 28,120

Peak discharge (base, 250 sec. -ft.). Apr. 8 (2 a.m.) 373 sec. -ft.

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Dec. 1-5, 11-15, Dec. 21 to Jan. 15, Jan. 26-30. 

No gage-height record Jan. 31 to Mar. 28 (stage-discharge relation affected by ice most of period); 

discharge computed on basis of 2 discharge measurements, weather records, and records for stations 

on nearby streams.
GUNNISON RIVER BASIN 137

Tomichi Creek at Gunnison, Colo.

Location.--Water-stage recorder, lat. 38°32 I , long. 106°56', in sec. 11, T. 49 N., R. 

i W-., half a mile upstream from mouth and 1 mile south of Gunnison. Datum of gage is 

7,628.58 feet above mean sea level, datum of 1929.

Drainage area.--1,020 square miles. ,

Records available. April 1938 to September 1950. November, December 1910 (gage heights 

only, datum then in use).

Average discharge. 12 years, 182 second-feet.

Extremes.--Maximum discharge during year, 570 second-feet Apr. 8 (gage height, 2.49 feet); 

minimum daily, 18 second-feet Sept. 30.

1938-50: Maximum discharge, 1,530 second-feet Mar. 24, 1939, from rating curve extended above 1,230 second-feet; maximum gage height, 3.97 feet May 28, 1942; minimum 

daily discharge, that of Sept. 30, 1950.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

8S 

90 

87 

82 

81

79 

78 

76 

81 

87

98 

98 

96 

95 

95

92 

92 

93 

93 

96

95 

93 

93 

102 

102

103 

102 

109 

116 

120 

118

Nov.

112 

120 

123 

120 

120

112 

HI 

111 

125 

127

12,7 

109 

102 

107 

118

118 

111 

111 

102 

102

98 

98 

102

107 

112

103 

102 

107 

109 

95

Dec.

87 

88 

85 

81 

*78

78 

75 

88 

88 

90

b84 

74 

70 

66 

64

66 

70 

74 

76 

78

74 

70 

68 

72 

72

70 

68 

64 

62 

64 

66

Jan.

66 

66 

82 

60 

56

52 

52 

54

54 

56

*56 

56 

58 

60 

60

60 

60 

58 

56 

56

58 

60 

60 

60

56

58 

60 

60 

58 

56 

56

Feb.

56 

54 

54

56 

56

56 

56 

58 

58 

*56

54 

56 

56 

56 

56

56 

56 

60 

62 

64

60 

58 

60 

62 

64

68 

72 

74

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Ma IT

June 

July 

Augu 

Sept

Wa

lendar year 194E

ter year 1949-50 .......................

Mar.

74 

74 

72 

72 

74

76 

*76 

76 

76 

78

80 

76 

74 

74 

74

76 

78 

80 

84 

86

88 

88 

*88 

94 

97

109 

109 

115 

115 

109 

115

Apr. '

160 

256 

364 

346 

410

470 

48C 

530 

470 

368

296 

282

318 

341 

359

332 

314 

323 

318 

305

328 

354 

386 

390 

346

310 

296 

278 

260 

260

Secondroot-days

2,930 

3,321 

2,310

95,495

1,800 

1,854 

2,657 

10,250 

5,482 

5,438 

1,914 

2,353 

951

41,060

May

232 

216 

232 

228 

216

206 

188 

174 

150 

140

140 

128 

128 

131 

134

147 

147 

160 

160 

157

150 

170 

191 

224 

232

232 

213 

195 

177 

144 

140

Maximum

120 

127 

90

1,310

66 

74 

115 

530 

232 

282 

97 

112 

43

530

June

174 

206 

248 

282

256

244 

252 

240 

220 

209

209 

228 

224 

216 

198

191 

191 

174 

157 

128

137 

150 

174

153 

131

118 

106 

85 

74 

£3

July

57 

58 

58 

55 

53

52 

53 

60 

66 

71

82 

97 

74 

58 

57

55 

53 

74 

74 

68

60 

60 

60 

58 

57

57 

57 

60 

57 

58 

55

Minimum

76 

95 

62

62

52 

54 

72 

160 

128 

63 

52 

45 

18

18.

Peak discharge (base, 320 see. -ft. }. Apr»8 (10:30 a.m.) 570 sec. -ft.; Apr.

Aug.

55 

57 

60 

66 

71

74 

85 

100 

109 

100

97 

112 

103 

97 

91

88 

91 

88 

80 

77

71 

66 

60 

60 

63

63 

63 

58 

53 

50 

45

Mean

94.5 

111 

74.5

262

58.1 

59.1 

85.7 

342 

177 

181 

61.7 

75.9 

31.7

112

Sept.

43 

41 

37 

35 

35

35 

33 

33 

35 

33

33 

32 

32 

31 

30

29 

29 

29 

29 

32

31 

30 

31 

31 

31

32 

31 

30 

20

18

Runoff In 

acre-feet

5,810 

6,590 

4,580

189,400

3,570 

3,280 

5,270 

20,330 

10,870 

10,790 

3,800 

4,670 

1,890

81,450

15 (10 p.m.) 377

see.-ft.; Apr. 23 (10 P-m.) 400 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Dec. 12 to Mar. 22 (stage-discharge relation affected by lee most of 

period); discharge computed on basts of 3 discharge measurements, weather records, and records for 

stations on nearby streams.
138 (JUNNISON RIVER BASIN

Quartz Creek near Ohio, Colo.

Location. --Water-stage recorder, lat. 38°33'35", long. 106°38'05", in SWjSW^ sec. 27, T. 

50 M. , R. 3 E., 75 feet upstream from bridge on State Highway 162, half a- mile downstream from Willow Creek, and 1 mile southwest of Ohio.

Drainage area. 106 square miles.

Records available. April 1938 to September 1950 (discontinued).

Average discharge. --12 years, 54.1 "second-feet.

Extremes .--Maximum discharge during year, 247 second-feet June 1 (gage height, 2.82 feet); 

minimum daily, 8.5 second-feet Sept. 30.

1938-50: Maximum discharge, 640 secoond-feet May 26, 1942, from rating curve extended above 470 second-feet; .maximum gage height, 5.73 feet (present datum) July 31, 1945 

(backwater from Flick Gulch, 300 feet below station); minimum daily discharge, that of 

Sept. 30, 1950.

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

which are fair. Small diversions above station for irrigation.

Revisions. --W 11«49: Drainage area.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6

7

e

9 

10

11

12 

13 

14 

15

16 

17 

16

US 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

29 

29 

29 

28 

28

28 

26 

28 

31 

34

36 

38 

36 

34 

32

31 

33 

32 

31 

30

30 

28 

30 

30 

29

28 

26 

24 

23 

23 

20

Nov.

22 

22 

*23 

23 

22

22 

22 

23

26 

27

28 

19 

22 

25 

26

23 

25 

24 

23 

23

23 

23 

23

25 

24

23 

24 

26 

23 

18

Dec.

bl8 

bl8 

bl7 

b!7 

b!7

*b!7 

b!8 

b!8 

b!8 

b!9

bis 

b!7 

17 

17 

IS

19 

20 

20 

20 

20

19 

17 

18 

18 

18

IS 

18 

18 

18 

18 

18

Jan.

19 

21 

21 

18 

19

20 

18 

18 

22 

21

20 

21 

23 

22 

21

21 

*b23 

b23 

b22 

21

20 

20 

20 

20 

22

b20 

20 

21 

21 

21 

21

Feb.

b20 

b!9

17 

18

18

18 

b!9 

*b!9 

blB 

b!7

b!8 

b!9 

b!9 

b!9 

b!9

b!8 

b!8 

18 

18 

18

19 

17 

17 

17 

18

18 

19 

20

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

18 

18 

18 

18 

18

18 

*18 

18 

17 

17

18 

19 

19 

18 

19

20 

20 

21 

23 

23

22 

24 

25 

25

25

24 

23 

25 

*26 

29 

22

Apr.

23 

29 

28 

26 

27

32 

44

50 

42 

35

34

38 

47 

56 

53

46 

53 

63 

64 

75

88 

96 

99 

91 

78

81 

80 

76 

76 

69

Secondfoot-days

913 

702 

561

23,484

640 

512 

648 

1,699 

3,256 

4,151 

1,201 

734 

396.9

15,413.9

May

67 

76 

88 

88 

75

70 

66 

66 

64 

66

75 

83 

78 

72 

78

84 

107 

115 

1O8 

110

132 

166 

176 

176 

164

136 

122 

115 

115 

136 

182

Maximum

38 

28 

20

436

23 

20 

29 

99 

182 

205 

62

 ??

205

June

203 

205 

196 

154 

150

186 

188 

172 

152 

158

168 

172 

166 

160 

154

152 

146 

136 

125 

118

112 

115 

105 

99 

92

84 

76 

72 

69 

66

July

62 

57 

62 

53 

53

50 

51 

52 

46 

56

53 

43 

42 

38 

33

35 

34 

38 

38 

32

30 

28 

26 

26 

26

24 

22 

22 

21 

23 

25

Minimum

.20 

18 

17

17

18 

17 

17 

23 

64 

SB 

21 

16 

8.5

8.5

Aug.

24 

24 

26 

27 

27

28 

26 

28 

29 

28

29 

29 

26 

25 

24

26 

26 

24 

23 

22

22 

21 

20 

20 

20

20

19 

19 

18 

18 

16

Mean

29.5 

24.4 

18.1

64.3

20.6 

18.3 

20.9

56. 6 

105 

138 

38.7 

2-3.7 

13.2

42.2

Sept.

16 

17 

16 

17 

14

12

12 

14 

14 

13

13 

13

14 

14 

14

12 

11 

11 

12 

14

14 

13

13 

13 

14

16 

13 

10 

9.4 

8.5

Runoff in 

acre -feet

1,810 

1,390 

1,110

46,560

1,270 

1,020 

1,290 

3,370 

6,460 

8,230 

2,380 

1,460 

787

30,580

Peak discharge (base, 220 see.-ft.) . June 1 (11 p.m.) 247 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Oct. 22-28, Nov. 21-25, Dec. 13 to Jan. 16, Jan. 27-31, Feb. 3-6, 

Feb. 18 to Mar. 28 (stage-discharge relation affected by ice during part of periods); discharge computed on basis of 1 discharge measurement, recorded range in stage, weather records, and records 

for stations on nearby streams.
GUNNISON RIVER BASIN 139

Cebolla Creek near Lake City, Colo.

Location. Water-stage recorder, lat. 37°59', long. 107"10' , in sec. 14, T. 43 N., R. 3 

 W., just downstream from Tumble Creek, 26 miles southeast of Lake City.

Drainage area. 25.5 square miles.

Records available.--July 1946 to September 1950.

Extremes. Maximum discharge during year, 79 second-feet May 21 (gage height, 2.03 feet); 

minimum not determined, occurred during period of no gage-height record.

1946-50:. Maximum discharge, 218 second-feet June 12, 1949 (gage height, 2.99 feet): 

minimum not determined, occurred during period of no gage-height record.

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

Transmountain diversion above station (see p. 27).

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

9.2 

8.8 

8.8 

8.8 

8.8

8.8 

8.8 

9.6 

*12 

13

10 

12 

12 

12 

10

10 

10 

10 

10 

blO

10 

10 

10 

10 

10

10 

11 

11 

12 

13 

13

Nov.

(*) 

9.6

Dec.

(*) 

7.0

Jan.

6.6

Feb.

6.0

Month

Ooto 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

6.0

Apr.

7.0 

12 

12 

10 

8.5

10 

14 

14 

13 

10

8.2 

10 

13

15 

15

13 

12 

14 

13 

18

22 

23 

26 

26 

*24

26 

25 

28 

23 

22

Secondfoot -days

322.6 

288.0 

217.0

8,545.7

204.6 

168.0 

186.0 

486.7 

1,034 

534 

320.0 

202.8 

178.8

4,142.5

May

26 

29 

33 

27 

2O

2O 

20 

20 

19 

20

23 

26 

30

32 

33

36 

50 

42

37 

37

49 

51 

SO 

52 

45

38 

39 

37 

30 

31 

32

Maximum

13

182

28 

52

27 

17 

8.5 

8.5

52

June

27 

25 

26 

24 

22

23 

25 

21 

20 

20

20 

19 

19 

18 

16

16 

15 

15 

15 

15

14 

20 

17 

14 

13

12 

11 

11 

11 

10

Minimum

July

10 

11 

11 

10 

9.3

9.3 

9.3

11 

17 

15

12

11 

11 

11 

15

11 

11 

13 

11 

11

9.3 

8.9 

8.5 

8.5 

8.5

7.8 

8.2 

8.2 

7.4 

7.4 

7.4

8.8

-

7.O 

19 

10 

7.4 

5.2 

5.2

-

Aug.

7.O 

7.O 

7.8 

7.4 

7.4

8.2 

8.5 

7.4 

7.O 

7.0

7.8 

7.8 

7.8 

7.4 

7.0

7.0 

6.6 

5.9 

5.3 

5.3

5.2- 

5.2 

5.3 

5.5 

6.3

6.3 

5.5 

5.3 

5.2 

5.2 

5.2

Mean

10.4 

9.6 

7.0

23.4

6.6 

6.0 

6.0 

16.2 

33.4 

17.8 

10.3 

6.54 

5.96

11.3

Sept.

5.2 

5.2 

5.2 

5.2 

5.3

5.5 

6.3 

5.9 

5.9 

5.5

5.9 

5.5 

5.5 

5.3 

5.3

5.2 

5.3 

6.3 

8.5 

7.4

6.3 

6.6 

7.0 

7.0 

6.6

6.3 

5.9 

5.9 

5.5 

6.3

Runoff In 

acre-feet

640 

571 

430

16,960

406 

333 

369 

965 

2,050 

1,O6O 

635 

402 

355

8,220

Peak discharge (base. 180 see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 22 to Apr. 24 (stage-discharge relation affected by Ice most of 

period); discharge computed on basis of 2 discharge measurements, weather records, and records for 

stations on nearby streams.

20 7364
140 GUNNISON RIVER BASIN

Cebolla Creek at Powderhorn, Colo.

Location.--Water-stage recorder, lat, 38°17'30", long. 107°07'00", In SE£ sec. 29, T. 47 

H., K. 2 W., 200 feet downstream from bridge on State Highway 149, 250 feet downstream 

from Powderhorn Creek, and half a mile north of Powderhorn.

Drainage area. 334 square miles.

Records available. April 1938 to September 1950.

Average discharge. 10 years (1939-43, 1944-50), 111 second-feet.

Extremes.--Maximum discharge during year, 305 second-feet June 3 (gage height, 2.27 feet); 

minimum daily, 35 second-feet Sept. 1.

1938-50: Maximum discharge, 2,150 second-feet May 16, 1944, from rating curve extended above 710 second-feet; maximum gage height, 3.40 feet June 17, 1949; minimum dally 

discharge, 22 second-feet July 14, 1940.

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

which are fair. Diversions for irrigation and small transmountain diversion above 

station.

Discharge, In second-feet, water year October 1949 to September i960

Day

1 

2 

3 

4 

5

6 

7 

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.

74 

72 

72 

72 

72

72 

72 

74 

89 

80

78 

77 

80 

80 

77

75 

75 

74 

74 

70

70 

69 

72 

70 

69

69 

69 

66 

67 

69 

60

Nov.

63 

61 

59 

*60 

59

58

60 

60 

60 

62

64 

62 

56 

60 

64

62 

60 

60 

60 

58

56 

56 

58 

64 

60

60 

58 

56 

54 

52

Dec.

52 

50 

50 

50 

50

54 

56 

*58 

60 

62

60 

56 

54 

50 

48

52 

54 

56 

56 

54

52 

SO 

50 

50 

50

50 

50 

50 

50 

50 

50

Jan.

54 

56 

56 

52 

50

50 

52 

54 

56 

54

50 

52 

56 

54 

51

50 

58 

*60 

62 

62

60 

60 

62 

68 

58

52 

50 

56 

58 

58 

58

Feb.

54 

52 

50 

52 

56

58 

60 

50 

*43 

42

48 

54 

56 

48 

45

44 

43 

42 

42 

45

46 

40 

41 

41 

42

42 

43 

44

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

44 

44 

43 

42

41

41 

40 

*40 

40

41

41 

40 

38 

38 

39

44 

46 

48 

50 

52

54 

56 

57 

*57 

57

57 

b57 

b58 

b60 

b66 

71

Apr.

98 

121 

118 

74 

71

76 

128 

143 

104

72

71 

83 

110 

139 

139

93 

88 

110 

107 

121

175 

211 

230 

225 

171

167 

184 

159 

184 

135

Secondfoot-days

2,259 

1,782 

1,634

62,068

1,729 

1,323 

1,502 

3,907 

4,117 

3,512 

1,865 

1,704 

1,274

26,608

May

139 

155 

184 

198 

139

121 

110 

10O 

93 

93

10O 

110 

110 

100 

107

98 

1OO 

143 

135 

118

124 

175 

198 

198 

175

139 

124 

151 

121 

100 

159

Maximum

89 

64 

62

924

68 

60 

71 

230 

198 

245 

81 

65 

48

245

June

193 

184 

245 

193 

147

124 

155 

135 

118 

118

124 

135 

132 

121 

118

110 

107 

100 

95 

88

86 

100 

114 

93

76

69

65 

58 

57 

52

July

51 

55 

55 

55 

55

54 

55 

55 

62 

81

71 

60 

57 

60 

67

71 

67 

76 

63 

57

55 

60 

63 

63 

65

6O 

58 

63 

55

48 

48

Aug.

48 

54 

57 

60 

60

62 

63 

62 

63 

58

60 

62 

65 

65 

62

60 

58 

54 

=52 

52

51 

48 

48 

50 

55

57 

50 

48 

45 

39 

36

1 

Minimum Mean

6O 72.9 

52 59.4 

48 52.7

37 170

50 55.8 

40 47.2 

38 48.5 

71 130 

93 133 

52 117 

48 60.2 

36 55.0 

35 42.5

35 72.9

Sept.

35 

37 

39 

38 

40

42 

45 

47 

47 

44

44 

43 

42 

42 

41

40 

40 

40 

43 

48

45 

43 

47 

47 

48

44 

42 

41 

41 

39

Runoff In 

acre-feet

4,480 

3,530 

3,240

125,100

3,430 

2.62O 

2,98O 

7,750 

8,170 

6,970 

3,700 

3,380 

2,530

52,780

Peak discharge (base, 800 sec.-ft). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 10 to Mar. 23 (stage-discnarge relation affected by ice most of 

period); discharge computed on basis of 4 discharge messurements, weather records, and records for 

stations on nearby streams.
GUMISON RIVER BASIN 141

Sapinero Creek at Sapinero, Colo.

Location.--Water-stage recorder, lat. 38 0 28'30", long. 107°18'00", in sec. 28, T. 49 N., 

K. 4' vJ., 50 feet upstream from bridge on U. S. Highway 50, 500 feet upstream from mouth, 

and five-eighths of a mile northeast of Sapinero.

Drainage area. 85.5 square miles.

Records available. October 1910 to 'September 1914, October 1945 to September 1950.

Extremes.--Maximum discharge during year, 315 second-feet May 22; maximum gage height, 

4. Ob feet Mar. 31 (ice Jam); minimum daily discharge, 0.8 second-foot Sept. 19.

1910-14, 1945-50: Maximum discharge, 892 second-feet May 22, 1948 (gage height, 4.49 

feet), from rating curve extended above 300 second-feet; minimum daily, 0.6 second-foot 

Sept. 16, 1948.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

6.2 

4.8 

3.7 

4.3 

5.2

6.6 

6.6 

5.6 

5.6 

7.6

11 

9.8 

9.8 

9.8 

9.8

9.8 

10 

12 

12 

12

11 

11 

10 

10 

10

10 

10 

10 

9.2 

9.8 

*9.0

Nov.

8.8 

8.8 

8.6 

8.6 

9.0

9.6 

8.8 

8.2 

8.6. 

9.2

9.8 

8.2 

8.O 

8.0 

8.6

8.6 

8.6 

8.2 

8.0 

7.8

7.8 

7.8 

8.0 

8.2 

8.2

8.2 

8.0 

8.0 

8.0 

8.0

Dec.

7.8 

7.8 

7.8 

7.8 

7.8

8.2 

8.4 

8.6 

*8.8 

8.8

8.6 

8.2 

7.8 

7.6 

7.4

7.8 

8.2 

8.6 

8.2 

8.0

7.8 

7.6 

7.8 

8.4 

8.2

8.0 

8.0 

8.0 

8.0 

8.0 

8.0

Jan.

8.6 

9.6 

9.0 

8.4 

8.2

8.4 

8.4 

8.6 

8.8 

9.0

*9.0 

9.0 

6.6 

8.6 

8.6

8.0 

8.2 

8.4 

8.6 

8.6

8.6 

.0 

.2 

.4

.6

.4 

.2 

.2 

7.4 

7.4 

7.4

Feb.

7.4 

7.6 

6.6 

6.4 

6.8

*6.6 

6.6 

7.0 

6.6 

6.8

7.2 

7.2 

7.2 

7.0 

6.6

6.4 

6.6 

6.6 

6.8 

7.0

7.2 

7.4 

7.4 

7.4 

7.6

8.2 

8.0 

8.2

Month

Octo 

Hove 

Dece

Ca

janu 

Pebr 

Marc 

Aprl

MHV

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 300 sec. -ft.). Apr.

ft.; May 22 (12 p.m.] 315 sec. -ft.

Mar.

8.2 

8.2 

8.0 

8.0 

7.8

*8.0 

7.8 

7.6 

8.0 

8.4

8.6 

8.4 

8.0 

8.2 

8.8

8.6 

9.2 

9.4 

9.4 

9.4

9.4 

9.0 

9.6 

10 

10

11 

10 

*10 

10 

13 

16

Apr.

23 

35 

48 

48 

45

57 

92 

*134 

107 

70

57 

68 

131 

200 

192

138 

170 

244 

232 

232

268 

275 

267 

228 

184

187 

207 

178 

178 

156

May

165 

187 

214 

221 

162

127 

105 

96 

92 

89

113 

156 

181 

168 

207

255 

287 

255 

251 

239

259 

279 

279 

255 

239

181 

150 

162 

144 

181 

232

Second- MB-I,.,,,,, foot-days Ma*!"" 

272.2 12 

252.2 9.8 

250.0 8.8

25,973.7 474

254.4 9.6 

198.4 8.2. 

286.0 16 

4,451 275 

5,931 287 

5,839 275 

822.0 89 

212.5 14 

98.6 5.4

18,867.3 287

22 (8: SO a.m.) 311 sec

June

267 

271 

275 

235 

214

224 

239 

239 

207 

200

214 

232 

232 

232 

224

228 

247 

243 

224 

184

171 

153 

135 

127 

127

113 

103 

98 

94 

87

July

89 

78 

72 

61 

54

48 

43 

41 

37 

33

33 

28 

21 

20

21

19 

17 

17 

19 

13

10 

9.2 

8.3 

6.2 

4.4

3.7 

3.0 

3.7 

2.8 

3.7 

3.0

Aug.

4.4 

5.4 

4.4 

3.0 

5.4

8.3 

6.2 

8.8 

10 

9.2

10 

14 

11 

10 

9.2

8.8 

8.3 

7.8 

7.4 

7.4

6.5 

6.5 

6.2 

6.5 

6.5

5.8 

2.8 

3.4 

3.7 

3.0 

2.6

Minimum Mean

3.7 8.78 

7.8 8.41 

7.4 8.06

3.5 71.2

7.0 8.21 

6.4 7.09 

7.6 9.23 

23 148 

89 191 

87 195 

2.8 26.5 

2.6 6.85 

.8 3.29

.8 5V. 7

Sept.

2.6 

2.6 

2.6 

2.4 

2.8

5.1 

5.4 

4.0 

3.4 

3.0

2.8 

2.2 

3.0 

3.4 

2.2

1.6 

1.4 

1.0 

.8 

1.0

3.7 

4.0 

4.4 

5.1 

5.4

5.1 

5.1 

4.8 

3.7 

4.0

Runoff In 

acre-feet

54O 

500 

496

51,520

505 

394 

567 

8,830 

11,760 

11,580 

1,630 

421 

196

37,420

-ft.; May 17 (3 a.m.) 311 see.-

* iflnter discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Oct. 31 to NOT. 8, HOT. 12 to Mar. 31 (no gagehelght record Dec. 7 to Mar. 29; discharge computed on basis'of 5 discharge measurements, weather 

records, and records for stations on nearby streams).
142 OKJOTISON RIVER BASIN

Lake Pork at Gateview, Colo.

Location. Water-stage recorder, lat. 38°17'50", long. 107°13'25", In sec. 29, T. 47 N., R. 

 3 W., at old village of Gateview, a quarter of a mile upstream from Indian Creek and

about 15 miles upstream from mouth. Datum of gage is 7,827.66 feet above mean sea level,

datum of 1929.

Drainage area. 370 square miles.

Records available. April 1938 to September 1950 (no winter records 1939, 1943, 1944).

Average discharge. 12 years, 266 second-feet.

Extremes.--Maximum discharge during year, 1,180 second-feet June 17 (gage height, 2.86 

reet); minimum daily, 39 second-feet Mar. 13.

1938-50: Maximum discharge, 2,620 second-feet June 21, 1938 (gage height, 6.00 feet, 

present datum), from rating curve extended above 1,800 second-feet; minimum daily, 28 

second-feet Feb. 18, 1942.

Remarks, Records excellent except those for period of ice effect or no gage-height record, 

which *e fair. Diversions above station for irrigation.

Rating table, water year 1949-50, except period of Ice effect 

(gage height, In feet, and discharge, In second-feet)

0.9 

1.0 

1.2 

1.4

107

130

190

260

1.8 

2.4 

2.7

430

800

1,040

Discharge, In second-feet, water year October 1949 to Septemberl950

Day

 1 

2 

3 

4

5

6 

7 

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.

86 

85 

83 

83 

82

82 

80 

78 

86 

86

86 

86 

86 

88 

85

85 

86 

86 

88 

86

82 

80 

85 

86 

83

83 

82 

80 

80 

82 

78

Nov.

77 

75 

74 

*72 

72

72 

72 

71 

74 

72

72 

65 

62 

68 

72

61 

62 

62 

64 

64

62 

62 

61 

65 

65

65 

64 

65 

64 

59

Dac.

56 

52 

52 

52 

52

58 

62 

*62 

62

62

60 

58 

56 

54 

52

54

62 

62 

62 

62

58 

54 

54 

56 

58

56 

56 

58 

58 

58 

58

Jan.

60 

60 

60 

56 

52

50 

50 

50 

50 

50

49 

49 

49 

49

52

56 

60 

*60 

60 

60

60 

60 

60 

60 

56

52 

56 

60 

58 

56 

52

Feb.

50 

50 

48 

52 

56

54 

52 

48 

*45 

45

50 

49 

48 

47 

46

45 

45 

45 

45 

45

45 

45 

45 

45 

45

45 

46 

50

Month

Octo 

NovS 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

45 

45 

45 

45 

45

45 

43 

*45 

45 

44

44 

43 

39 

43

43

41 

40 

41 

42 

42

41 

41 

42 

*42 

45

45 

44 

43 

42 

45 

54

Apr.

60 

70 

*90 

82 

70

74 

84 

90 

82 

71

66 

72 

85 

105 

107

98 

99

123 

128 

139

184 

239 

276 

320 

308

276 

272 

260 

280 

242

Secondfoot-days

2,594

2,015 

1,776

118,879

1,712 

1,331 

1,349 

4,452 

10,847 

23,263 

10,200 

3,172 

1,983

64,694

May

225 

239 

296 

316 

276

236

208 

178 

157 

151

151 

157 

166 

166 

184

208 

276 

336 

344 

316

356 

448 

610 

670 

664

598 

574 

592 

490 

508 

751

Maximum

88

77 

62

2,140

60 

56 

54 

320 

751 

1,020 

550 

157 

74

1,020

June

928 

1,000 

976 

700 

568

610 

706 

652 

652 

744

872 

1,010 

984 

968 

944

992 

1,020 

968 

856 

737

712 

712 

604 

586 

640

646 

640 

634 

610 

592

July

550 

508 

448 

410 

390

372 

352 

344 

348 

385

390 

372 

348 

324

410

400 

364 

376 

348 

324

296 

268 

253 

239 

228

211 

204 

204 

190 

175 

169

Minimum

78 

59 

52

32

49 

45 

39 

60 

151 

568 

169 

69 

56

39

Aug.

157 

148 

145 

139 

130

133 

128 

118 

116

109

109 

112 

107 

103 

99

99 

98 

92 

88 

85

82 

80 

78 

77 

80

83 

85 

77 

74 

72 

69

Mean

83.7 

67.2 

57.3

326

55.2 

47.5 

43.5 

148 

350 

775 

329 

102 

66.1

177

Sept.

68 

66 

65 

65 

66

69 

69

71 

74 

71

69 

66 

64 

64 

61

58 

57 

56 

62

72

69 

68 

71 

71 

69

68 

65 

64 

64

61

Runoff In 

acre-feet

5,150 

4,000 

3,520

235,800

3,400 

2,640 

2,680 

8,830 

21,510 

46,140 

20,230 

6,290 

3,930

128,300

Peak discharge (base, 1,550 sec.--ft.). No peak above base.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 3 to Apr. 9 (no gage-height record Dec. 17 to 

Mar. 23, Mar. 27 to Apr. 2; discharge computed on basis of 3 discharge measurements, weather records, 

and records for stations on nearby streams).
GUNNISON RIVER BASIN 143

Curecantl Creek near Sapinero, Colo.

Location. Water-stage recorder, lat, 38°29", long. 107°25 I , In sec. 21, T. 49 N., R. 5 

ST., 50 feet upstream from bridge on State Highway 92, 2\ miles upstream from mouth, and 

6 miles west of Saplnero.

Drainage area. 31.8 square miles.

Records available.--Apr11 1946 to September 1950.

Extremes. Maximum discharge during year, 268 second-feet May 17 or 22 (gage height, 3.61 

reet, from recorded range In stage), from rating curve extended above 200 second-feet; 

minimum daily recorded, 2.6 second-feet Sept. 4.

1946-50: Maximum discharge, 422 second-feet May 22, 1948, from rating curve extended above 190 second-feet; maximum gage height, 5.62 feet May 17, 1948; minimum 

daily discharge recorded, 2.0 second-feet Aug. 1-3, 1948.

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

which are poor.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

6.2 

4.9 

4.9 

4.9 

5.2

4.6 

4.6 

4.6 

5.2 

6.2

6.9 

6.9 

7.6 

8.0

7.6

6.9 

8.3 

8.3 

8.0 

7.0

7.0 

7.8 

7.2 

6.0 

5.8

5.8 

5.2 

4.6 

4.6 

4.6 

*4.6

Nov.

4.9

5.5 

5.2 

5.5 

5.8

6.2 

6.2 

6.2

.5

.5 

.5 

.5 

.6

.5 

.5 

.4 

.3 

.3

.3 

.3 

.4

.4 

.3

.1 

.0 

4.0 

3.9 

3.8

Dec.

(») 

4.0

Jan.

4.0

Feb.

3.5

Month

Ooto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Via

lendar year 1949

ter year 1949-50 .......................

Mar.

4.5

Apr.

11 

16 

25 

28 

27

33 

39

43 

37 

29

23 

30 

50 

*64 

62

50 

58 

83 

86 

93

126 

152 

152 

128 

92

93

107 

90 

90 

74

Secondfoot-days

190.0 

145.0 

124.0

13,448.5

124.0 

98.0 

139.5 

1,991 

3,939 

3,525 

611.5 

124.1 

122.4

11,133.5

May

71 

74 

94 

100 

86

74 

64 

58 

56 

54

68 

90 

120 

120 

140

170 

230 

220 

210 

200

210 

230 

200 

170 

140

120 

100 

110 

100 

120 

140

Maximum

8.3

6.2

273

152 

230 

176 

49 

7.9 

5.8

230

June

150 

158 

176 

150 

138

146 

158 

142 

117 

108

121 

152 

148 

146 

142

142 

142 

138 

117 

103

103 

99

86 

77 

74

66 

61 

58 

55 

52

July

49 

45 

42 

38 

35

32 

30 

30 

26 

24

25 

21 

19 

18 

18

16 

15 

15 

14 

12

11 

9.9 

9.2 

8.9 

8.6

7.5 

7.2 

7.2 

6.4 

6.1 

5.5

Minimum

4.6 

3.8

-

11 

54 

52 

5.5 

2.9 

2.6

-

Aug.

5.2 

5.0 

4.7 

4.4 

4.2

5.0 

4.7 

4.4 

4.2 

3.7

5.5 

7.9 

5.2 

4.4 

4.0

3.7 

3.7 

3.3 

3.1 

3.1

3.1 

3.1 

3.1 

3.1

3.1

3.5 

3.7 

3.1 

3.1 

2.9 

2.9

Mean

6.13 

4.83 

4.0

36.8

4.0 

3.5

4.5 

66.4 

127 

118 

19.7 

4.00 

4.08

30.5

Sept.

2.9 

2.9 

2.9 

2.6 

3.3

3.3 

5.8 

4.2 

4.2 

4.2

4.7 

5.2 

5.2 

5.2 

4.0

3.5 

3.5 

3.5 

3.7 

5.8

5.2 

4.4 

4.4 

4.0 

4.7

4.0 

4.0 

3.7

3.7 

3.7

Runoff In 

acre-feet

377 

288 

246

26,680

246 

194 

277 

3,950 

7,810 

6,990 

1,210 

246 

243

22,080

Peak discharge (base, 250 see.-ft.). May 17 or 22 (time unknown) 268 sec.-ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 20-30, Dec. 2 to Apr. 13 (stage-discharge relation affected by 

Ice during most of period), May 2 to June 1; discharge computed on basis of 1 discharge measurement, 

recorded range In stage, weather records, and records for stations on nearby streams. Stage-discharge 

relation affected by ice Nov. 12 to Dec. 1.
144 GUNNISON RIVER BASIN

Cimarron Creek below Squaw Creek, at Ciraarron, Colo.

Location. Water-stage recorder, lat. 38°26'40", long. 107°33'30", in sec. 5, T. 48 N., 

RTTTW., 850 feet downstream from Squaw Creek, a quarter of a mile northeast of 

Cimarron, and three-quarters of a mile upstream from mouth. Datum of gage is 6,864.10 

feet above mean sea level, datum of 1929.

Drainage area. 232 square miles.

Records available. April 1943 to September 1950.

Extremes. Maximum discharge during year, 764 second-feet June 16 (gage height, 5.33 

reec); minimum daily, 8.9 second-feet Sept. 6.

1943-50: Maximum discharge, 1,700 second-feet June 19, 1949 (gage height, 7.40 

feet), from rating curve extended above 1,200 second-feet; minimum daily, that of Sept. 

6, 1950.

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

 which are fair. Records of diversion above station to Uncompahgre River Basin by

Cimarron and Owl Creek ditches were not obtained during water year 1949-50. Several

small diversions in Cimarron Creek Basin for irrigation.

Rating table, water year 1949-5O, except periods of ice effect

(gage height, in feet, and discharge, in second-feet) 

(Shifting-control method used Oct. 1 to Nov. 15, Sept. 19-30)

1.9

2.0

2.2

2.3

2.5 42

2.7 63

3.O 1O3

3.2 134

3.6 210

4.1 325

4.6 465

Discharge, in second-feet', water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

33 

36 

37 

36 

37

26 

21 

20 

28 

31

33 

3O 

32 

32 

30

31 

33 

37 

37 

37

38 

34 

40 

38 

36

37 

36 

26 

26 

26 

23

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

MAv

June 

July 

Augu 

Sept

Wa

Nov.

25 

23 

23 

23 

22

22 

*23 

23 

25

26

29 

28 

43 

49

51

46 

47 

42 

43 

42

40 

40 

39 

47 

40

40 

40 

41 

39 

32

Dec.

36 

28 

39 

36 

b41

b44 

b45 

48 

*48 

4O

38 

b34 

b29

30 

31

32 

33 

34 

37 

4O

39 

36 

33 

35 

33

32 

33 

30 

30 

31 

31

Jan.

31 

31 

31 

31 

30

*28 

29 

31 

32

30

31 

32 

32 

32 

29

30 

31 

31 

31 

31

30 

29 

31 

32 

30

30 

32 

33 

32 

29 

29

Feb.

28 

27 

24 

26 

26

28 

30 

30 

29 

*28

3O 

31 

31 

31 

30

30 

3O 

31 

32 

32

30 

29 

28 

28 

29

30 

32 

33

Honth

lendar year 1949 

ary

1.. .....................................

ter year 1949-50 .......................

Mar.

33 

32 

31 

31 

33

35 

34 

34 

*b35 

b34

33 

33 

b32

b35 

38

36 

37 

39 

36 

40

38 

b36 

b35 

b37 

b39

40 

35 

34 

38 

42 

66

Apr.

1O2 

114 

89 

63 

64

88 

118 

156 

129 

84

76 

84 

104 

123 

129

102 

1O6 

148 

150 

161

210 

234 

228 

2O6 

178

188 

182 

152 

2OO 

139

Secondfoot -days

997

1,053 

1,106

55,051

951 

823 

1,131 

4,107 

4,916 

9,357 

1,520 

606 

450.5

27,017.5

May

123 

166 

225 

256 

184

152 

136 

124 

85 

80

97 

103 

82 

67 

89

106 

170 

168 

161 

109

141 

212 

241 

243 

214

143 

145 

192 

115 

2OO 

387

Maximum

4O 

51 

48

1,290

33 

33 

66 

234 

387 

462 

120 

40 

23

462

June

441 

426 

396 

230 

165

3O5 

352 

281 

288 

355

42O 

444 

408 

405 

4O8

456 

462 

4O2 

345 

278

256 

305 

188 

206 

247

214 

194 

186 

156 

138

Minimum

July

120 

 99 

77 

63 

42

39 

4O

51 

51 

52

56 

49 

46 

39

50

49 

44 

68 

61 

47

44 

41 

37 

34 

34

34 

34 

34 

3O 

28 

27

20 

22 

28

16

28 

24 

31 

63 

67 

138 

27 

10 

8.9

8.9

Aug.

23 

20 

22 

20 

20

21 

23

24 

22 

22

4O 

34 

28 

23 

22

20 

19 

18 

18 

17

15 

12 

12 

14 

16

17 

18 

14 

11 

10 

11

Mean

32.2 

35.1 

35.7

151

30.7 

29.4 

36.5 

137 

159 

312 

49. 0 

19.5 

15. 0

74. 0

Sept.

11 

9.8 

9.2 

9.8 

9.8

8.9 

11 

12 

16 

15

15 

14 

14 

14 

14

15 

16 

14 

16 

20

20 

21 

21 

23 

22

18 

15 

16 

16 

14

Runoff In 

acre-feot

1,980 

2,090 

2,190

109,200

1,890 

1,630 

2,240 

8,150 

9,75O 

18,560 

3.O1O 

1.2OO 

894

53,58O

Peak discharge (base, 1,O5O see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 14 to Mar. 8 (stage-discharge relation affected by ice most of 

period); discharge computed on basis of 2 discharge measurements, weather records, and records for 

stations on nearby streams.
GUNNISON RIVER BASIN 145

Crystal Creek near Maher, Colo.

Location --Water-stage recorder, lat. 38°33', long. 107°30', In SE£ sec. 35, T. 50 N., 

R. b" W., 1 mile downstream from North Pork and 7 miles southeast of Maher.

Drainage area.--39.1 square miles.

Records available.--October 1916 to September 1919, July 1945 to September 1950.

Extremes.--Maximum discharge during year, 186 second-feet Apr. 21 (gage height, 3.58 

I'eet); minimum daily recorded, 3.8 second-feet Sept. 4.

1916-19, 1945-50: Maximum discharge, 542 second-feet Apr. 29, 1948 (gage height, 

5.05 feet), fpom rating curve extended above 200 second-feet; no flow at times during 

August 1918.

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

which are poor. One diversion above station for irrigation.

Revisions.--W 1039: Drainage area.

2.0

2.1

2.2

1.5 

4.5 

9.5

Rating tables, water year 1949-50, except periods of lee effect

(gage height, In feet, and discharge, In second-feet)

(Shifting-control method used May 31 to June lo)

Oct. 1 to June 1 June 2 to Sept. 30

2.4 23

2.5 31

2.7 51

3.1

3.3

3.4

101

131

150

2.0

2.1

2.2

3.0 2.3 17

5.0 2.4 25

10 2.5 34

2.6 

2.8 

3.2

45

71

131

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

5.5 

5.0 

5.0 

5.0 

5.0

5.5 

5.5 

4.5 

6.0 

6.5

7.5 

8.0 

8.5 

8.0 

6.5

6.0 

7.0 

7.5 

7.0 

6.5

6.5 

8.0 

7.0 

6.0 

6.0

6.0 

5.5 

5.0 

5.0 

5.0 

6.0

Nov.

6.0 

5.5 

5.0 

5.0 

5.5

6.0 

5.5 

4.2 

*5.0 

5.0

5.0 

5.2 

5.2 

5.2

5.4

5.4 

5.4

5.4 

5.6 

5.6

5.6 

5.5 

5.5 

5.5 

6.0

7.0 

7.0 

7.0 

6.0 

5.4

Dee.

7.0 

(»)

Jan.

 "6.6

Feb.

7.0

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 .......................

Mar.

8.0 

(*)

Apr.

15 

21 

27 

27 

26

31 

*39 

43 

34 

29

27 

30 

46 

64 

58

44 

53 

73 

76 

92

121 

135 

125 

105 

83

84 

85 

74 

76 

62

Secondfoot-days

192.0 

166.6 

217.0

12,228.2

204.6 

196.0 

248.0 

1,805 

2,458 

2,207 

537.5 

163.5 

156.6

8,551.8

May

56 

55 

70 

85 

69

57 

48 

48 

46 

48

58 

78 

87 

87 

93

107 

111 

101 

93 

88

101 

121 

117 

102 

84

63 

62 

67 

64 

83 

109

Maximum

8.5 

7.0

215

135 

121 

126 

34 

8.0 

7.5

135

June

126 

125 

118 

94 

92

106 

104 

90 

82 

84

91 

92 

86 

86 

79

72 

68 

67 

58

52

48 

45 

40 

44 

52

46 

44 

42 

38 

36

July

34 

32 

31 

30 

27

24 

23 

25 

22 

23

33 

22 

19 

17 

19

16 

15 

14

13 

11

9.0 

9.0 

9.0 

8.5 

8.5

7.5 

7.5 

7.5 

7.5 

7.0 

6.5

Minimum

4.5 

4.2

-

15 

46 

36 

6.5 

4.0 

3.8

-

Aug.

6.5 

6.0 

6.5 

7.0

6.5

7.0 

6.5 

5.5 

5.0 

5.0

7.5 

8.0 

6.0 

5.5 

4.8

.8 

.6 

.6 

.6 

.4

.4

.2 

.2 

.4 

.4

.8 

.6 

.2 

.0 

.0 

.0

Mean

6.19 

5.55 

7.0

33.5

6.6 

7.0 

8.0 

60.2 

79.3 

73.6 

17.3 

5.27 

5.22

23.4

Sept.

4.0 

4.0 

4.0 

3.8 

4.0

4.8 

7.5 

6.0 

5.0 

5.0

6.0 

6.0 

5.5 

5.0 

4.8

4.8 

4.8 

4.8

5.5 

8.5

6.0 

5.5 

5.0 

5.5 

6.5

5.5 

4.8 

4.8 

4.6 

4.6

Runoff In 

acre-feet

381 

330 

430

24,250

406 

389 

492 

3,580 

4,880 

4,380 

1,070 

324 

311

16/970

Peak discharge (base. 160 see,-ft.). Apr. 21 (6 p.m.) 186 sec.-ft. ; June 1 (8 p.m.) 184 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 12-23, Nov. 30 to Dee. 6. No gage-height 

record Dec. 7 to Apr. 6 (stage-discharge relation affected by lee during part of period)! discharge 

computed on basis of 2 discharge measurements, weather records, and records for stations on nearby 

streams.
146 GUNNISON RIVER BASIN

Smith Fork near Crawforti, Colo.

location.--Water-stage recorder, lat. 38°44', long. 107°31', In sec. 24, T. 15 S., R. 91 

w., Just upstream from Second Creek and 6 miles northeast of Crawfoid. .Altitude of gage, 

7,200 feet (by barometer).

Drainage area. 42.3 square miles.

Records available.--February 1941 to July 1944, April 1945 to September 1950. 

to September 1940 In files of Bureau of Reclamation.) (April 1936

Extremes . Maximum discharge during year, 2-33 second-feet May 23 (gage height, 4.12 feet); 

minlm'jn daily, J.5 se.qond-feet Oct. 2, 3, 6, 7.

-"* " 1941-44, 1945-50: Maximum discharge, 604 second-feet May 19, 1948, from rating curve 

extended above 160 second-feet; maximum gage height, 5.34 feet May 21, 1948; minimum 

daily discharge, 2.0 second-feet Feb. 11, 1941.

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

which are fair. A few small diversions above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

4.7 

4.5 

4.5 

5.2 

5.6

4.5 

4.5 

4.7 

5.4 

5.8

6.7 

6.3 

6.5 

6.5 

6.5

7.2 

9.1 

10 

11 

10

9.7 

9.1 

9.4 

9.7 

9.4

9.4

9.1 

9.1 

8.8 

8.8 

8.8

Nov.

8.5 

8.5 

8.2 

7.9 

8.2

8.8 

8.8 

9.1 

*9.1 

8.8

9.1 

b6.7 

b7.2 

bS.O 

8.5

8.5 

8.5 

8.5 

8.5 

8.5

bS.O 

b7.4 

b7.4 

7.6 

7.4

7.2 

7.2 

7.2 

7.4 

b6. 6

Dec.

b6.6 

b5.6 

b5.3 

b4.9 

b5.4

b6.3 

6.7 

7.6 

6.7 

6.9

b6.2 

4.7 

4.6 

5.0 

5.4

6.0 

6.8 

6.6 

*6.6 

6.2

6.2 

5.7 

5.2 

5.4 

5.5

5.6 

5.8

6.0 

6.0 

6.1 

6.2

Jan.

6.4 

6.5 

5.8 

5.3 

5.5

5.2 

5.5 

5.8 

6.1 

6.0

6.0 

6.2 

6.4 

6.3 

5.9

*6.2 

6.3 

6.2 

6.1 

6.0

6.3 

6.6 

6.8 

6.8 

6.4

6.1 

6.0 

6.7 

7.1 

7.4 

7.4

Feb.

7.2 

7.2 

6.6 

6.8 

7.6

7.8 

8.2 

8.4 

8.0 

7.6

8.0 

8.4 

*8.2 

7.8 

7.4

7.4 

7.8 

8.0 

8.0 

8.6

9.0 

8.2 

8.5 

8.4 

8.2

8.4 

8.8 

9.1

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year. 1949-50 .......................

Mar.

8.8

8.1 

7.9 

7.8 

8.2

8.5 

8.2

8.5 

8.0 

7.6

6.8 

6.0 

5.6 

6.2 

*7.2

6.9 

6.9 

7.4 

7.9 

8.2

8.2 

8.2 

8.2 

8.8 

9.7

b9.5 

b8.6 

bS.O 

bS.O 

b8.2 

b8.8

Apr.

14 

29 

34 

29

28

41 

62 

101 

81 

*59

49

60 

84 

106 

106

91 

97 

120 

127 

134

170 

203 

202 

184 

150

148 

161 

142 

133 

116

Secondfoot-days

230.5 

241.3 

183.8

15,047.4

193.3 

223.6 

244.9 

3,061 

4,452 

2,975 

956 

322.2 

238.6

13,322.2

May

105 

113 

134 

137 

106

90 

70 

67 

60 

69

88 

105 

126 

136 

168

197 

214 

203 

208 

210

216 

222 

226 

212 

192

146 

118 

125 

108 

123 

158

Maximum

11 

9.1 

7.6

221

7.4 

9.1 

9.7 

203 

226 

182 

59 

14 

11

226

June

178 

182 

176 

154 

139

146 

139 

126 

106 

98

102 

106 

102 

95 

91

88 

85 

81 

76 

70

67 

64 

62 

64 

66

64 

60 

62 

64 

62

Minimum

July

59 

55 

53 

48 

45

41 

42 

48 

42 

38

41 

36 

32 

30 

29

27 

26 

25 

23 

22

21 

20 

19 

19 

19

18 

17 

16 

16 

15 

14

4.5

6.6 

4.6

4.5

5.2 

6.6 

5.6 

14 

60 

60 

14 

7.9 

6.5

4.5

Aug.

14 

13 

13

12 

12

13 

12 

12 

11 

11

12 

12 

11 

11 

10

10 

10 

9.7 

9.4 

9.4

9.1 

8.8 

8.8 

8.8 

8.8

9.1 

8.8 

8.5 

8.2 

7.9 

7.9

Mean

7.44 

8.04 

5.93

41.2

6.24 

7.99 

7.90 

102 

144 

99.2 

30.8 

10.4 

7.95

36.5

Sept.

.4 

.4 

.2 

.4 

.4

7.9 

8.5 

8.5 

8.2 

8.5

9.7 

8.8 

9.1 

7.9 

7.6

7.6 

7.4 

7.4 

8.5 

11

8.8

8.5 

7.9 

7.9

7.6

7.2 

7.2 

6.9 

6.5 

6.7

Runoff in 

acre -feet

457 

479 

365

29,850

383 

444

486 

6,070 

8,830 

5,900 

1,900 

639 

473

26,430

Peak discharge (base, 260 sec. -ft.). Ho peak above base.

Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Dec. 12 to Mar. 14 (stage-discharge relation affected by ice most of 

period); discharge computed on basis of 3 discharge measurements, weather records, and records for 

stations on nearby streams.
GUOTISON RIVER BASIN 147

Iron Creek near Crawford, Colo.

Location.--Water-stage recorder, lat. 38°41', long. 107°36', In SW£ sec. 13, T. 51 N., 

K. 7 W., 600 feet downstream from Clear Fork and 1.8 miles southeast of Crawford.

Records available. September 1947 to September 1950.

Extremes.--Maximum discharge during year, 183 second-feet July 11 (gage height, 4.30 

reet), from rating curve extended above 100 second-feet on basis of slope-area determination at gage height 5.70 feet; minimum dally, 4.6 second-feet Sept. 3-5.

1947-50; Maximum discharge, 367 second-feet Oct. 14, 1947 (gage height, 6.05 

feet), from rating curve extended above 100 second-feet on basis of slope-area 

determination at gage height 5.70 feet; minimum dally, that of Sept. 3-5, 1950.

Remarks.--Records fair. Diversions above station for Irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 -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.

10 

9.8 

9.8 

9.8 

9.8

9.8 

9.8 

9.0 

11 

12

12

12 

11 

11 

11

11 

11 

13 

14 

14

14 

12 

12 

12 

12

12 

12 

12 

12 

11 

10

Nov.

12 

12 

12 

12 

11

11

11 

12 

*12 

12

13 

11 

11 

11 

12

12 

12 

12 

12 

12

12 

11 

12 

13 

12

12 

12 

12 

12 

11

Dec.

11 

10 

9.8 

9.2 

9.4

9.4 

12 

10 

12 

12

9.4 

8.2 

8.2 

8.8 

9.0

9.4 

9.4 

9.4 

*9.4 

9.8

9.8 

9.0 

8.2 

8.6 

8.6

8.8 

9.2 

9.8 

10 

10 

10

Jan.

11 

11 

10 

9.8 

10

9.8 

10

11 

11 

11

11 

12. 

12 

12 

13

*13 

13 

12 

12 

12

12 

13 

13 

13 

13

12

11 

11 

12 

13 

13

Feb.

13 

13 

12 

12 

12

13 

13 

13 '13 

12

13 

13 

*13 

13 

12

12 

12 

13 

13 

14

14 

13 

14 

14 

13

14 

15 

15

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 194S .... ..... . . .......

ter year 1949-50 .......................

Mar.

14

14 

14 

14 

15

15 

15 

15 

15 

13

12 

12 

11 

13 

*20

15 

17 

17 

15 

17

15 

15 

18 

17 

17

14 

14 

12 

14 

14 

17

Apr.

21 

23 

20 

15 

16

19 

23 

30 

26 

20

18 

19 

23 

27 

29

23 

23

29 

29 

31

37 

37 

38 

36 

24

20 

18 

16 

20 

17

Secondfoot-days

351.8 

354 

297.8

6,409.4

362.6 

366

460 

727 

825 

916 

474.8 

233.0 

182.9

5,550.9

May

17 

21 

27 

36 

29

26 

21 

21 

19 

17

20 

19 

19 

27 

32

23 

23 

28 

30 

27

33 

34 

32 

26

29

34 

30 

32 

32 

32 

29

Maximum

14 

13 

12

85

13 

15 

20 

38 

36 

43 

37 

9.4 

7.8

43

June

30 

33 

38 

38 

38

29 

27 

27 

25 

28

43 

40 

39 

38 

29

27 

26 

29 

32 

29

29 

33 

32 

27

29

29 

25 

22 

23 

22

July

20 

20 

19 

15 

14

14 

14 

18 

14 

14

37 

21 

17 

19 

18

16 

16 

15 

14 

14

12 

12 

12 

12 

12

11 

12 

11 

11 

11 

9.8

Minimum

9.0

11 

8.2

7.5

9.8 

12 

11 

15 

17 

22 

9.8 

4.6 

4.9

4.6

Aug.

9.4 

8.6 

8.6 

8.2 

8.2

8.2 

8.2 

8.2 

8.2 

8.2

9.0 

9.4 

8.6 

8.2 

7.8

7.8 

7.4 

6.7 

6.4 

6.4

6.4 

6.4 

6.4 

6.4 

7.0

4.6 

6.1 

6.4 

7.0 

8.2 

6.4

Mean

11.3 

11.8 

9.61

17.6

11.7 

13.1 

14.8 

24.2 

26.6 

30.5 

15.3 

7.52 

6.10

15.2

Sept.

5.5 

5.8 

4.9 

4.9 

4.9

6.4 

6.7 

6.4 

6.1 

6.4

6,4 

6.1 

5.8 

5.2 

5.2

5.2 

5.8 

6.1 

7.0 

7.8

6.4 

6.4 

6.1 

6.7 

6.7

6,4 

6.7 

6.4 

6.1 

6.4

Runoff in 

acre-feet

698 

702 

591

12,710

719 

726 

912 

1,440 

1,640 

1,820 

942 

462 

363

11,020

Peak discharge (base, 150 sec. -ft.). July 11 (7 p.m.) 183 sec. -ft.

Winter discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Dec. 2, 4, 5, 12-15, Dec. 22 to Mar. 14.
148 GUNNISON RIVER BASIN

East Muddy Creek near Bai-dine, Colo.

Location. Water-stage recorder, lat. 39°01', long. 107°22', in sec. 17, T. 12 S., R. 89 

w., a quarter of a mile downstream from Spring Creek, 6-| miles upstream from Bardine. 

Datum of gage is 6,654.78 feet above mean sea level, datum of 1929.

Drainage area.--136 square miles.

Records available.--May 1935 to September 1950 (no winter records 1935-41).

Extremes4 Maximum discharge during year, 680 second-feet May 16 or 17 (gage height, 1.70 

FeeT7 from recorded range in stage), from rating curve extended above 400 second-feet 

on basis of shape of former curve; minimum daily, 10 second-feet Mar. 13.

1935-50r Maximum discharge, 2,190 second-feet May 13, 1941 (gage height, 3.41 

feet), from rating curve extended above 800 second-feet; minimum daily, 6 second-feet 

Aug. 28, 1936.

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

which are fair. Diversions above station for irrigation.

Discharge, in second-feat, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

20 

16 

15 

15 

15

15 

14 

12

13 

17

15 

17 

18 

16 

15

15 

16 

23 

25 

21

20

19 

19 

18 

16

17 

17 

17 

17 

17 

20

Nov.

20 

18 

17 

18 

19

19 

20 

21 

*17 

20

19 

b!7 

bl8 

b!9 

20

b!9 

b20 

b!9 

b!9 

bis

b!7 

b!7 

bis 

20 

20

20 

19 

17 

18 

18

Dec.

17 

13 

14 

12 

12

14 

16 

15 

16 

16

14

12 

12 

13 

14

15 

17 

17 

16 

*16

16 

14 

13 

13 

14

14

14 

15 

15 

15 

15

Jan.

16 

16 

16 

12 

13

12 

12 

13 

13

13

14 

14 

14 

14 

13

*14 

14 

14 

14 

13

14 

14 

14 

15 

15

14 

14 

14 

15 

16 

16

Feb.

16 

16 

16 

14 

15

16 

18 

18 

17 

16

17 

17 

*18 

18 

18

18 

19 

20 

20 

21

22 

20 

18 

19

19

20 

21 

22

Month

Octo 

Nove 

Decs

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

21 

19 

19 

19 

20

21 

20 

18 

18 

17

16 

15 

10 

13 

12

*bll 

b!2 

b!4 

b!3 

b!5

b!4 

b!4 

b!5 

b!7 

b!9

b!8 

b!6 

b!5 

ID 15 

b!7 

25

Apr.

35 

53 

64 

46

48

72 

111 

193 

156

114

98 

*116 

153 

186 

177

156 

190 

212 

220 

250

400 

400 

420 

370 

340

370 

380 

370 

360 

300

Secondfoot-days

530 

561 

449

33,077

435 

509 

508 

6,360 

12,203 

5,293 

1,434 

657 

571

29,510

May

270 

330 

420 

440 

350

290 

250 

229 

220 

235

310 

360 

380 

430 

470

510 

530 

480 

510

490

510 

510 

500 

480 

460

420 

360 

350 

350 

361 

398

Maximum

25 

21

17

621

16 

22 

25

420 

530 

410 

88 

25 

33

530

June

410 

390 

330 

280 

260

270 

250 

210 

180 

200

180 

170 

160 

155 

155

155 

150 

160 

140 

130

120 

114 

108 

103 

98

90 

88 

85 

80 

72

July

76 

72 

68 

64 

6O

58 

62 

72 

64 

64

88 

58

48 

44 

42

40 

38 

43 

48 

41

38 

35 

31 

30 

29

23 

20 

22

20 

19 

17

Aug.

16 

16 

16 

18 

23

23 

25 

24 

23 

21

24 

23 

24 

24 

23

22 

?1 

21 

21 

22

21 

20 

20 

20 

21

25 

22 

21 

20 

19 

18

Minimum Mean

12 17.1 

17 18.7 

12 14.5

12 90.6

12 14.0 

14 18.2 

10 16.4 

35 212 

220 394 

72 176 

17 46.3 

16 21.2 

15 19.0

10 80.8

Sept.

17 

16 

15 

15 

15

15 

16 

16 

17 

22

19 

24 

25 

25 

20

18 

18 

18 

23 

33

24 

20 

20 

20 

20

18 

17 

15 

15 

15

Runoff in 

acre-feet

1,050 

1,110 

891

65,6OO

863

1,010 

1,010 

12,610 

24,200 

10,500 

2,840 

1,300 

1,130

58,510

Peak discharge (base, 650 sec.-ft.). May 16 or 17 (time unknown) 680 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Mote.--No gage-height record Nov. 30 to Mar. 15 (stage-discharge relation affected by ice most of 

period), Apr. 19 to May 7, May 9-29, June 1-21, June 29 to July 18j discharge computed on basis of 

5 discharge measurements, recorded range in stage, weather records, and records for stations on 

nearby streams.
GUNNISON RIVER BASIN 149

Muddy Creek at Bardine, Colo.

Location.--Water-stage recorder, lat. 38°56'25", long. 107°21'30", in NE£ sec. 8, T. 13 

S., R. 89 W., 30 feet downstream from bridge on State Highway 135 at Bardine, a quarter 

of a mile upstream from confluence with Anthracite Creek, li miles downstream from Deep 

Creek, and 5j miles east of Somerset. Datum of gage is 6,266.07 feet above mean sea 

level, datum of 1929.

Drainage area. 246 square miles.

Records available.--October 1949 to September 1950.

Extremes. Maximum discharge during year, 1,110 second-feet May 16 (gage height, 4.34 

reetj, from rating curve extended above 780 second-feet; minimum not determined.

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

which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

6 

7 

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.

25

Nov.

27

Dec.

20

(*)

Jan.

24

(*)

Feb.

(*) 

27

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year

ter year 1949-5O .......................

Mar.

22

(*)

Apr.

58 

100 

160 

110 

120

150 

240 

400 

350 

280

22O 

*261 

354 

424 

390

358 

470 

612 

6O6 

666

804 

93O 

972 

902 

708

769 

811 

797 

790 

630

Seeondfoot-days

775 

810 

6 2O

-

744 

756 

682 

14,442 

24,245 

10,587 

2,311 

950 

813

57,735

May

588 

690 

881 

930

734

612 

540 

500 

465 

490

624 

720 

755 

853 

916

972 

993 

944 

951 

958

986 

993 

993 

972 

902

748 

684 

678 

660 

709 

804

Maximum

'-

-

972 

993 

818 

138

44 

51

993

June

818 

790 

666 

570 

5 2O

540

510 

424 

376 

390

365

348 

330 

321 

321

312 

306 

315 

285 

246

234 

225 

243 

201 

216

201 

156 

130 

118 

110

July

116 

109 

105 

100 

95

91 

92 

114 

1OO 

101

138 

91 

76 

69 

66

62 

61 

83 

95 

73

67 

60 

49 

47 

45

38 

34 

37 

35 

33 

29

Minimum

~

-

58 

465 

110 

29 

23 

18

-

Aug.

27 

27 

27 

28 

32

34 

40 

44 

40 

35

37 

36 

36 

37 

35

33 

30 

28 

27 

28

28 

26 

25 

25 

25

31 

28 

27 

27 

24 

23

Mean

25 

27 

20

-

24 

27 

22 

481 

782 

353 

74.5 

30.6 

27.1

158

Sept.

21 

20 

19 

18 

18

19 

20 

21 

22 

28

27 

30 

34 

34 

28

25 

24 

24 

28 

51

45 

36 

33 

32 

31

28 

26 

23 

24 

24

Runoff in 

acre-feet

1,540 

1,610 

1,230

-

1,480 

1,500 

1.35O 

28,65O 

48,09O 

21.OOO 

4,580 

1,880 

1,610

114,500

Peak discharge (base, I.IOO see.-ft.).--May 16 (4 p.m.) 1,110 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 4-20. No gage-height record Oct. 1 to Dec. 3, 

Dec. 21 to Mar. 31 (stage-discharge relation affected by ice during most of period), Apr. 2-11; discharge computed on basis of 3 discharge measurements, weather records, and records for East Muddy 

Creek near Bardine.
150 GUNNISON RIVER BASIN

North Pork Gunnison River near Somerset, Colo.

Location. Water-stage recoruer, lat. 38°56' , long. 107°26' , In sec. 10, T. 13 S., R. 90 

w., a miles east of Somerset. Datum of gage Is 6,038.6 feet above mean sea level, 

datum of 1929.

Drainage area. 521 square miles.

Records available.--March 1934 to September 1950.

Average discharge.--16 years, 468 second-feet.

Extremes.--Maximum discharge during year, 3,240 second-feet May 21 (gage height, 4.28 feet); 

minimum daily, 42 second-feet Dec. 4, 5.

1934-50: Maximum discharge, 5,850 second-feet May 13, 1941 (gage height, 6.30 feet), 

from rating curve extended above 3,200 second-feet; minimum daily, 28 second-feet Sept. 

19, 1934.

Remarks. Records good except those-for periods of ice effect, which age fair. Diversions 

above station for irrigation.

Rating table, water year 1949-50, except periods of ice effect

(gage height, in feet, and discharge, In second-feet^ 

(Shifting-control method used Oct. 1 to Nov. 6, Nov. 16 to Mar. 31)

O.7 36 1.2 13O 2.4 900 

.8 50 1.3 165 2.9 1,390 

1.0 82 1.5 260 3.6 2,250 

1.1 104 1.8 440 4.0 2,820

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

93 

84 

82 

80 

79

79 

77 

76 

79 

89

86 

89 

91 

91 

89

84 

93 

117 

130 

112

104 

89 

95 

95 

89

86 

84 

80 

82 

82 

74

Nov.

76 

76 

76 

74 

71

69 

68 

69 

79 

86

89 

63 

69 

76 

84

77 

79 

79 

74 

74

72 

68 

71 

84 

74

72 

72 

72 

72 

64

Dec.

64 

43 

49 

42 

42

56 

74 

64 

72 

72

56 

44 

44 

49

58

66 

74 

74 

72 

* 72

71 

66 

b56 

b58 

b57

b6O 

b62 

b64 

b64 

b64 

b66

Jan.

69 

71 

71 

b56 

b60

b56 

b60 

b62 

b66 

b64

b64 

66 

68 

66 

b62

b66 

*69 

69 

69 

68

68 

69 

71 

72 

69

63 

58 

68 

69 

71 

71

Feb.

68 69- 

b60 

61 

72

74 

77 

80 

77 

69

72 

79 

71 

*72 

69

69 

72 

76 

77 

82

86 

72 

82 

80

77

82 

102 

109

Month

OCtO

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

97 

95 

93 

93 

104

122 

104 

84 

97 

91

82 

79 

52 

79 

76

71 

79 

97 

89 

100

91 

91 

97 

114 

122

117 

97 

84 

84 

89 

95

Apr.

1

1

1 

1, 

1, 

1,

1 

2, 

2, 

1,

1,

1, 

1, 

1,

1, 

1,

Secondfoot-days

2,760 

2,229 

1,875

171,662

2,051 

2,136 

2,865 

31,654 

59,720 

46,400 

11,347 

3,301 

2,795

169,133

137

266 

327 

230 

245

363 

568 

040 

812 

545

440 

522 

764 

020 

999

836 

O10 

320 

380 

460

790 

150 

250 

900 

510

560 

640 

600 

610 

360

May

1,3OO 

1,560 

1,920 

1,940 

1,520

1,260 

1,120 

1,070 

1,010 

1,040

1,280 

1,620 

1,740 

1,890 

2,260

2,420 

2,630 

2,500 

2,460 

2,560

2,730 

2,820 

2,790 

2,700 

2,530

1,960 

1,720 

1,630 

1,620 

1,860 

2,260

Maximum

130 

89 

74

2,58O

72

109 

122 

2,250 

2,820 

2,500 

732 

125 

162

2,820

June

2,460 

2,500 

2,330 

1,990 

1,920

2,110 

1,990 

1,760 

1,570 

1,670

1,760 

1,800 

1,740 

1,69O 

1,670

1.S30 

1,620 

1,540 

1,360 

1,240

1,210 

1,160 

1,070 

1,080 

' 1,090

1,020 

936 

876 

828 

780

July

732 

680 

650 

590 

545

508 

508 

582 

530 

478

530 

440 

382 

345 

321

315 

288 

321 

333 

288

250 

230 

210 

" 196 

188

170 

158 

158 

151 

14O 

130

Aug.

122 

122 

120 

12O 

117

122 

125 

122 

117 

112

120 

125 

114 

112 

104

102 

122 

112 

1O9 

109

107 

104 

91 

84 

82

95 

89 

84 

82 

79 

76

Sept.

74 

72 

72 

71 

72

79 

77 

76 

77 

89

93 

100 

107 

102 

91

86 

84 

84 

93 

162

134 

120 

112 

109 

107

102 

95 

89 

84 

82

M-ini , m M=on Runoff In Minimum Mean acre . feet

74 89.0 5,470 

64 74.3 4,42O 

42 60.5 3,720

42 470 340,400

56 66.2 4,070 

60 76.3 4.24O 

52 92.4 5,680 

137 1,055 62,780 

1,010 1,926 118,500 

780 1,547 92,030 

130 366 22,51O 

76 1O6 6,550 

71 93.2 5,54O

42 463 335,500

Peak discharge (base. 2,400 sec.-ft.).--Apr. 22 (10:30 p.m.) 2,670 sec.-ft.; May 21 (10 p.m.) 

3,240 sec.-ft.; June 1 (12 p.m.) 2,800 sec.-ft. 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
GOMISON RIVER BASIN 151

Leroux Creek near Cedaredge, Colo.

Location.--Water-stage recorder, lat. 38°55', long. 107°48', In sec. 16, T 13 S. R 93 

w 2 °0 feet upstream from head gate of Overland ditch and 7.2'miles northeast of' 

Cedaredge.

Drainage area.--43.0 square miles.

Records available.--October 1936 to September 1950 (no winter records 1936-46).

Extremes.--Maximum discharge during year, 625 second-feet May 31 (gage height 3 89 feet)' 

minimum daily, 5.0 second-feet Nov.- 11, 12.

1936-50: Maximum discharge, 1,310 second-feet May 26, 1942, from rating curve extended above 650 second-feet; maximum gage height, 5.10 feet May 10, 1937; minimum 

daily discharge, 3.6 second-feet Mar. 13, 1940, but may have been less during periods 

of no record.

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

which are poor. One small diversion and several small reservoirs above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9.5 

8.7 

8.7 

8.3 

8.1

8.3 

8.1 

" 7.3 

8.5 

8.1

*7.9 

8.3

10 

11 

9.3

8.7 

8.9 

13 

11 

9.7

10 

10 

10 

8.9 

8.3

7.9 

7.5 

7.3 

7.1 

7.0 

9.6

Nov.

9.6 

9.3 

8.7 

8.9 

8.9

8.9 

9.7 

*8.5 

8.9 

8.7

5.0 

5.0 

5.2 

5.6 

6.2

6.2 

6.1 

6.1 

6.1 

6.0

6.0 

6.0 

6.1 

6.0 

5.8

6.0 

6.0 

6.0 

6.1 

6.2

Dec.

6.2 

6.2 

6.0 

6.0 

6.0

6.0 

6.2 

6.2 

6.2 

6.2

6.2 

6.1 

6.0 

5.6 

5.8

5.8 

6.0 

6.0 

6.2 

6.2

6.0 

6.0 

6.1 

6.1 

5.8

5.8 

5.8 

5.8 

6.0 

6.0 

6.3

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

Jan.

6.4 

6.4 

6.2 

6.0 

5.5

5.5 

5.6 

6.0 

6.2 

5.8

6.0 

6.0 

6.0 

5.8 

5.6

5.8 

6.0 

6.0 

6.0 

6.0

6.0 

6.0 

6.0 

6.0 

6.0

6.2 

5.6 

5.6 

5.8 

6.0 

6.0

Feb.

5.8 

5.4 

5.6 

6.0 

6.4

6.4 

6.3 

6.2 

6.2

6.1

6.2 

6.2 

6.0 

*6.2 

6.3

6.4 

6.4 

6.5 

6.5 

6.5

6.4 

6.0 

6.1 

6.2 

6.4

6.4 

6.3 

6.3

lendar year 1949

ter year 1949-50 .......................

Mar.

6.4 

6.4 

6.6 

6.6 

6.8

6.8 

6.7 

6.6 

6.8 

7.6

7.4 

7.4 

7.6 

7.8 

*8.1

8.3 

8.5 

8.9 

8.9 

8.5

8.7 

8.9 

8.7 

8.7 

8.9

9.5 

9.7 

10 

9.5 

9.1 

8.7

Apr.

10 

12 

13 

13 

12

12 

18 

30 

26 

20

19 

22 

33 

46 

34

25 

30 

55 

66 

80

105 

121 

124 

116 

110

132 

129 

106 

94 

80

Seoondfoot-days

275.0 

207.8 

186.8

20 , 256 . 9

184.0 

173.7 

249.1 

1,693 

6,672 

4,654 

1,631 

1,021 

493

17,440.4

May

83 

106 

138 

131 

100

84 

73 

66 

62 

67

94 

126 

138 

172 

202

205 

278 

275 

298 

343

370 

355 

384 

398 

295

255 

286 

275 

275 

325 

413

Maximum

13 

9.7 

6.3

364

6.4 

6.5 

10 

132 

413 

358 

82 

43 

.25

413

Peak discharge (base, 600 sec. -ft.) .--May 23 (8 p.m.) 600 sec. -ft.

June

358 

328 

280 

240 

240

235 

215 

170 

164 

176

188 

180 

170 

156 

145

141 

134 

124 

' 112 

106

98 

97 

90 

86 

82

73 

63 

64 

70 

69

July

67 

66 

64 

63 

59

62 

63 

82 

67 

62

70 

62

53 

49 

47

47 

46 

47 

53 

47

44

43 

41 

39 

42

41 

40 

41 

42 

43 

39

Minimum

7.0 

5.0 

5.6

5.0

5.5 

5.4 

6.4 

10 

62 

63 

39 

20 

10

5.0

Aug.

43 

42 

40 

39 

40

40 

39 

40 

38

38

36 

35 

34

34 

31

31 

30 

30 

31 

31

31 

31 

31 

30 

30

29 

28 

25 

23 

20 

21

Mean

8.87 

6.93 

6.03

55.5

5.94 

6.20 

8.04 

56.4 

215 

155 

52.6 

32.9 

16.4

47.8

Sept.

21 

19 

18 

17 

16

16 

16 

22 

20 

22

19 

21 

22 

18 

16

16 

13 

14 

19

25

16 

13 

13 

13 

13

12 

12 

10 

11 

10

Runoff in 

acre-feet

545 

412 

371

40,180

365 

345 

494 

3,360 

13,230 

9,230 

3,240 

2,030 

978

34,600

j May 31 (6:30 p.m.) 625 sec. -ft

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Oct. 30 to Nov. 1, Nov. 12 to Mar. 14 (no gagehelght record Dec. 14 to Feb. 13; discharge computed on basis of weather records and records for stations on nearby streams).

207364 O- 52- 11
152 aUNNISON RIVER BASIN

Currant Creek near Cedaredge, Colo.

Location.--Water-stage recorder, lat. 38°51', long. 107°53', in sec. 10, T. 14 S., R. 94 

W., 4 miles southeast of Oedaredge and 6 miles upstream from mouth.

Drainage area. 36 square miles.

Records available.--May 1948 to September 1950.

Extremes. Maximum discharge during year, 100 second-feet Apr. 22 (gage height, 3.25 feet); 

minimum daily, 0.7 second-foot Sept. 22, 23, 26-30.

1948-50: Maximum discharge, 162 second-feet Apr. 24, 1949 (gage height, 3.58 feet), 

from rating curve extended above 50 second-feet; minimum daily, that of Sept. 22, 23, 

26-30, 1950.

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

which are poor. Many diversions above station for irrigation.

Discharge, In second-feet, Mater year October 1949 to September 1950

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

Oct.

3.4 

3.2 

3.2 

3.0 

3.0

2.7 

2.5 

2.3 

2.6 

2.6

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.7 

3.7 

4.5 

4.3

4.3 

4.9 

4.7 

4.7 

4.9

5.3 

6.5 

6.8 

6.8 

6.5 

6.5

Nov.

6.2 

6.2 

6.2 

6.2 

6.2

6.8 

6.2 

*4.9 

5.1 

5.5

6.8 

4.7 

4.7 

5.8 

5.8

5.5 

5.5 

5.5 

5.8 

6.0

5.8 

5.8 

.5.5 

5.8 

5.8

5.8 

3.7 

3.7 

3.7 

3.5

Dec.

3.7 

3.4 

3.5 

3.7 

3.2

3.4 

3.5 

3.5 

3.7

3.9

3.7 

3.5 

3.2 

3.2 

3.4

3.6 

3.7 

3.9

*3.9 

3.9

3.9 

3.6 

3.6 

3.6 

3.6

3.8 

3.8 

3.9 

4.0 

4.0 

4.0

Jan.

4.1 

4.4 

4.4 

3.8 

3.6

3.5 

3.5 

3.8 

4.1 

3.6

4.0 

4.4 

*4.4 

4.2 

3.8

4.0 

4.2 

4.4 

4.7 

4.9

4.9 

4.9 

5.1 

5.3 

4.5

4.0 

4.7 

4.7 

4.7 

4.3 

4.3

Feb.

4.2

4;o

3.9

4.1 

4.4

4.7 

5.0 

5.2 

4.9 

5.3

4.9 

4.1 

3.9 

*3.5 

3.4

3.7 

3.7 

3.5 

3.7 

3.9

4.1 

3.4 

3.4 

3.4 

3.4

3.5

3.7 

5.1

Month

Octo 

Move

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

biflV

June 

July 

Augu 

Sept

Wa

lendar year 194E 

ary

ter year 1949-50 .......................

Mar.

3.9 

3.7 

3.7 

3.5 

3.5

3.9 

3.5 

3.5 

3.7 

3.5

3.2 

3.9 

3.5 

3.5 

3.2

3.1 

3.4 

3.4 

3.2 

3.4

3.1 

3.5 

3.9 

3.7 

4.1

4.7 

4.3 

3.9 

3.9 

2.6 

2.6

Apr.

2.5 

3.5 

7.2 

4.3 

4.5

5.5 

8.6 

18 

14 

6.5

5.5 

7.5 

16 

27 

21

11 

16 

26 

20 

22

51 

51 

41 

a25 

a30

a38 

29 

17 

9.3 

5.1

Secondfoot-days

119.4 

164.7 

113.3

3,034.8

133.2 

114.0 

109.6 

543.0 

546.8 

158.8 

130.2 

48.9 

67.8

2,249.7

May

4.0 

a6.0 

aB.O 

a!2 

a9.0

a6.8 

a4.8 

a4.0 

a4.0 

4.8

8.4 

20 

18 

22 

27

27 

28 

27 

30

31

35 

39 

28 

30 

24

18 

15 

18 

12 

12 

14

Maximum

6.8 

6.8 

4.0

91

5.3 

5.3 

4.7 

51 

39 

14 

7.2 

4.0 

4.1

51

June

14 

11 

9.3 

7.2 

5.1

7.8 

8.4 

7.5 

5.7 

4.8

5.9 

6.6 

6.2 

5.5 

5.3

4.8 

4.8 

4.3 

3.4 

3.6

3.4 

3.3 

3.0 

2.8 

2.7

2.5 

2.4 

2.9 

2.6 

2.0

Minimum

July

1-.9 

2.8 

4.4 

4.4 

4.3

4.3 

4.8 

7.2 

5.1 

4.4

5.3 

4.4 

4.4 

4.4 

4.6

4.4 

4.4 

4.4 

4.4 

4.0

3.6 

3.7 

3.6 

4.0 

3.7

3.7 

3.8 

4.0 

4.0 

4.0 

3.8

2.3 

3.5 

3.2

2.0

3.5 

3.4 

2.6 

2.5 

4.0 

2.0 

1.9 

.8 

.7

.7

Aug.

3.7 

2.1 

.9 

1.0 

.9

.9 

1.0 

1.0 

1.0 

1.0

1.0 

1.1 

1.0 

.9 

.9

.8 

1.0 

1.0 

.9 

1.0

1.0 

1.1 

.8 

1.1 

1.2

2.3 

3.3 

3.6 

3.6 

3.8 

4.0

Mean

3.85 

5.49 

3.65

8.31

1 

]

4.30 

4.07 

3.54 

8.1 

7.6 

5.29 

4.20 

1.58 

2.26

6.16

Sept.

4.0 

4.0 

4.1 

4.0 

4.1

4.1 

4.0 

3.8 

3.7 

3.7

3.8 

2.8 

1.4 

1.2

1.2

1.4 

1.4 

2.0 

2.3 

2.6

1.7 

.7 

.7 

.8 

.8

.7 

.7 

.7 

.7 

.7

Runoff In 

acre-feet

237 

327 

225

6,020

264 

226 

217 

1,080 

1,080 

315 

258 

97. 

134

4,460

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for nearby 

stations.

Note. Stage-discharge relation affected by Ice Dec. 5, 12-17, Dec. 21 to Jan. 18, Jan. 26, Feb.
OUNNISON RIVER BASIN 153

Surface Creek near Cedaredge, Colo.

Location. Water-stage recorder, lat. 38°59', long. 107° 51, in NW^NW^r sec. 25, T. 12 S 

KT9? W., 1 mile downstream from- Caesar Creek and 8f miles northeast of Cedaredge.

Drainage area. --28. 5 square miles.

Records available. --June 1939 to September 1950 (no winter records 1939-46).

Extremes . --Maximum discharge during year, 202 second-feet May 21 (gage height 2 34 feet)- 

minimum daily, 3.8 second-feet Nov. 30.

1939-50: Maximum discharge, 578 second-feet May 12, 1941 (gage height, 3.62 feet), 

from rating curve extended above 300 second-feet; minimum observed, 2.5 second-feet 

Feb. 19, 1947 (discharge measurement), but may have been less during period of no gageheight record.

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

which are fair. Flow regulated by many small reservoirs.

Hating table, water year 1949-50, except period of ice effect 

(gage height, In feet, and discharge, In second-feet) 

(Shifting-control method used Sept. 19-30)

0.8 6.0 1.3 27 1.8 86 

.9 8.2 1.4 35 2.0 123 

1.0 12 1.5 45 2.2 167 

1.2 21 1.6 57

Discharge, In second- feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

20 

26 

26 

22 

21

15 

13 

12 

14

15

17 

16 

16 

16 

14

13 

14 

18 

16 

16

20 

20 

17 

15 

14

13 

10 

10 

9.8 

9.5 

13

Nov.

13 

12 

10 

10 

11

10 

10

9.8

15

15 

12 

11 

12 

13

11 

9.6 

8.5 

8.4 

8.3

7.4 

6.0 

5.8 

6.5

5.4

5.8 

5.0 

4.5 

4.1 

3.8

Dec.

5.0 

4.1 

4.0 

3.9 

4.4

4.9 

4.9 

4.3 

4.1 

4.5

4.5 

4.4 

4.2 

4.1 

4.2

4.3 

4.4 

4.7 

5.2 

 5.0

.6 

.2

.4 

.5 

.3

.4

.4 

.5 

4.5 

4.6 

4.6

Jan.

4". 8 

5.0 

4.9 

4.7 

4.5

4.2 

4.3 

4.5 

5.0 

4.7

4.8 

4.8 

*4.5 

4.1 

3.9

4.0 

4.5 

4.5 

4.5 

4.5

4.5 

4.5 

4.5 

4.5 

4.5

4.4 

4.0 

4.3 

4.5 

4.5 

4.4

Feb.

4.4 

.0 

.3 

.5 

.0

.2 

.0 

.8 

.6 

.5

.7 

.7 

.5 

» .7 

4.8

4.9 

5.0

5.1 

5.1 

5.2

5.0 

4.6 

4.7 

5.0 

5.2

5.4 

5.2 

5.0

Month

Octo 

Hove 

Deoe

Ca

Janu 

Pebr 

Marc 

Aprl

MAV

June 

July 

Augu 

Sept

Wa

mber. ... ........ .....................

lendar year 1949

ter year 1949-50 .......................

Mar.

5.0 

5.0

5.1 

5.2 

5.5

5.4 

5.2 

5.0 

5.2 

5.4

5.2' 

5.1 

5.0

5.4 

5.7

5.8 

6.0 

6.0 

6.0 

*6.2

6.4 

6.7 

6.7 

6.7 

6.7

6.9 

6.7 

6.7 

6.7 

6.7 

6.9

Apr.

7.8 

9.5 

10 

8.9 

8.5

8.9 

13 

18 

15

13

12 

12 

18 

25 

21

18 

23 

43 

50 

57

89 

107 

96 

80 

82

93 

91 

71 

57 

49

May

53 

65 

76 

71 

51

44 

41 

41 

40 

49

76 

94 

100 

117 

123

134 

153 

140 

146 

156

167 

167 

167 

156 

134

121 

125 

121 

119 

134 

142

foot°dts Maximura

491.3 26 

274.9 15 

138.1 5.2

16,232.2 165

139.3 5.0 

135.1 5.4 

182.2 6.9 

1,206.6 107 

3,323 167 

3,607 167 

2,132 98 

1,974 78 

1,230 72

14,833.5 167

June

142 

134 

123 

134 

153

167 

162 

136 

127 

129

125 

123 

119 

113 

115

109 

109 

129 

125

123

123 

121 

111 

103 

98

94 

91 

89 

86 

94

July

96 

96

88 

71 

67

83 

83 

98 

88 

58

63 

55 

52 

46 

44

42 

41 

60 

60 

70

65 

71 

72 

67 

67

76 

76 

84 

80 

58 

55

Aug.

52 

61 

61 

68 

72

64 

61 

72 

72 

64

64 

57 

52 45"

51

72 

74 

78 

78 

68

65 

71 

71 

72 

74

71 

67 

47 

47 

52 

51

Minimum Mean

9.5 15.8 

3.8 9.16 

3.9 4.45

3.8 44.5

3.9 4.49 

4.0 4.82 

5.0 5.88 

7.8 40.2 

40 107 

86 120 

41 68.8 

45 63.7 

17 41.0

3.8 40.6

Sept.

52 

70 

71 

63 

61

71 

72 

68 

65 

51

49 

44 

41 

29 

28

32 

33 

26 

33 

40

33 

23 

23 

25 

24

22 

22 

21 

21 

17

ac^e-fee?

974 

545 

274

32,190

276 

268 

361 

2,390 

6,590 

7,150 

4,230 

3,920 

2,440

29,420

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice. Nov. 12 to Dec. 12. No gage-height record Dec. 

13 to Mar. 19 (stage3dlscharge relation affected by Ice most'of period); discharge computed on basis 

of 3 discharge flseasurements, weather records, and records for stations on nearby streams.
154 GUNNISON RIVER BASIN

Surface Creek at Cedaredge, Colo.

Location. Water-stage recorder and concrete control, lat. 38°52", long. 107°55" in sec 

20TT. 13 S., R. 94 W., at Cedaredge, 500 feet east of State Highway 65.

Drainage area.--43 square miles.

Records available. May 1917 to September 1927 and October 1933 to September 1950 in reports or geological Survey. May 1917 to September 1950 in reports of State engineer.

Average discharge.--33 years (1917-50), 29.4 .second-feet.

Extremes.--Maximum discharge during year, 154 second-feet Apr. 21 (gage height, 1.11 feet')- 

minimum daily, 1.0 second-foot on many days. ' 

1917-50: Maximum discharge, 1,190 second-feet May 13, 1941 (gage height, 2 50 feet) 

from rating curve extended "above 640 second-feet; no flow Sept. 25, 1939, and practically no flow at times during some winters.

Remarks.--Records good except those for periods of no gage-height record or those below 

su second-feet, which are fair. Natural flow of stream affected by diversions to and 

irom nearby streams, storage reservoirs, and diversions for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

7.8 

8.4 

8.9 

8.9 

8.9

6.7 

4.5 

3.6 

2.4 

2.1

2.4 

3.6 

5.0 

4.5 

3.3

4.2 

5.6 

8.9 

5.0

5.6

7.2 

5.0 

6.2 

6.2 

6.2

6.2 

3.9 

3.6 

3.0 

2.7 

2.4

Nov.

2.4

2.1 

2.1 

2.4 

2.7

2.4 

2.7 

3.0 

3.0 

3.9

2.1 

2.1 

5.0 

4.5 

7.2

6.2 

5.6 

4.5 

4.5 

4.5

3.0 

3.0 

3.3 

3.6 

2.4

3.0 

2.7 

2.4

2.1 

1.5

Dec.

2.1 

1.5 

1.5 

1.4 

1.5

2.1 

2.1 

1.2 

1.5 

1.5

1.5

1.3 

1.2 

1.1 

1.0

1.2 

1.6 

2.0 

2.3 

3.3

3.1 

1.0 

1.0 

1.0 

1.0

1.0 

1.1 

1.2 

1.2 

1.3 

1.3

Jan.

1.4 

1.4 

1.0 

1.0 

1.0

1.1 

1.3 

1.5 

1.5 

1.5

1.5 

1.5 

1.4 

1.3 

1.3

1.4 

1.6 

1.6 

1.6 

1.6

1.6 

1.6 

1.6 

1.6 

1.4

1.1 

1.1 

1.4 

1.4 

1.4 

1.4

Feb.

1.4 

1.2 

1.1 

1.6 

2.1

2.1 

2.0

1.8 

1.6 

1.5

1.9 

1.9 

1.7 

2.0 

2.0

2.0 

2.0 

2.0 

2.2 

2.2

2.0

1.8 

1.9 

2.0 

. 2.1

2.3

2.1 

1.9

Month

Ooto 

Hove 

Dace

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

1............ ...........................

ter year 1949-50 .......................

Mar.

1.7 

1.6 

1.7 

1.9 

2.2

2.0 

1.6 

1.8 

2.1 

2.1

1.5 

1.8 

1.0 

1.0 

1.9

1.1 

1.5 

2.1 

1.5 

2.1

1.8 

1.5 

1.3 

1.2 

1.0

1.0 

1.2 

1.2 

1.2 

i:2 

1.0

Apr.

1.0 

1.6 

3.9 

2.8 

2.1

1.3 

8.9

21 

16 

12

8.9 

7.2 

18 

33 

25

20 

25 

55 

60 

80

112 

112 

82 

54 

63

71 

61 

48 

41 

34

Second- 

 foot-days

162.9 

99.9 

47.1

8,058.1

43.1 

52.4 

47.8 

1,080.7 

2,176 

1,752 

779.4 

715 

522.9

7,479.2

May

42 

58 

58 

58 

41

36 

33 

33 

37 

52

73 

80 

73 

80

66

73 

102 

84 

84 

84

84 

86 

95 

84 

77

84 

91 

86 

82 

80 

80

Maximum

8.9

7.2 

3.3

154

1.6 

2.3 

2.2 

112 

102 

98 

48 

32 

34

112

June

7O 

71 

73 

84 

95

98 

86 

61 

64 

68

68 

64 

64 

61 

59

42 

34 

61 

59 

54

50 

58 

50 

46 

41

40 

40 

33 

25 

33

July

36 

42 

41 

29

31

37 

38 

48 

38 

26

37 

28 

25 

22 

21

17 

15 

13 

8.4

16

16 

17 

19 

19 

16

19 

16 

25 

24 

19 

21

Minimum

2.1 

1.5 

1.0

-

1.0 

1.1 

1.0 

.1.0 

33 

25 

8.4 

17 

8.9

1.0

Aug.

20 

21 

19 

20 

El

22 

24 

28 

28 

28

32 

28 

26

17 

18

22 

19 

22 

22 

24

23 

23 

23 

25 

27

27 

26 

19 

20 

22 

19

Mean

5.25 

3.33 

1.52

22.1

1.39 

1.87 

1.54 

36.0 

70.2 

58.4 

25.1 

23.1 

17.4

20.5

Sept.

19 

16 

11 

18 

22

28 

33 

34 

32 

24

21 

22 

23 

12 

10

10 

8.9 

10 

20 

22

12 

12 

14 

16 

16

12 

10 

12 

12 

11

Runoff In 

acre-feet

323 

198 

93

15,970

85 

104 

95 

2,140 

4,320 

3,480 

1,550 

1,420 

1,040

14,850

Note. No gage-height record Dec. 11 to Mar. 8, Mar. 12-17, 19, Mar. 21 to Apr. 2, Apr. 4-6, 14- 

dlscharge computed on basis'of 3 discharge measurements, recorded range in stage, weather records, 

and 1 records for stations on nearby streams.
GUNNISON RIVER BASIN 155

Surface Creek at Ecke'rt, Colo.

Location. Water-stage recorder, lat. 38°50', long. 107°58', in SE£ sec. 14, T. 14 S., R. 

95 w.. a quarter of a mile west of State Highway 65, 0.5 mile southwest of Eckert,. 

and 8-5 miles upstream from mouth.

Drainage area. 55 square miles.

Records available.--April 1942 to September 1950.

Extremes. Maximum discharge during year, 78 second-feet Apr. 20 (gage height, 2.93 feet); 

minimum daily, 0.2 second-foot Mar. 18-20.

1942-50: Maximum discharge observed, 466 second-feet May 15, 1944 (gage height, 4.06 

feet, site and datum then In use), from rating curve extended above 150 second-feet; 

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.

Discharge, In second-feet, water year October 1949 to September 1950

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.

1.0

1.1 

1.2 

1.2 

.9

.9 

.9

1.1 

1.3 

1.1

1.2 

1.2 

1.4 

1.9 

1.1

1.1 

1.4 

2.7 

2.9 

1.7

2.0 

2.4 

2.2 

2.2 

1.8

1.4 

1.4 

1.4 

1.4 

1.5 

1.5

Nov.

1.5 

1.5 

1.6 

1.6 

1.6

1.6 

1.6 

1.5 

1.5 

1.5

1.6 

1.4 

1.4 

1.4 

1.4

1.4 

1.4 

1.4 

1.3 

1.4

1.3 

1.3 

1.4 

1.3 

1.3

1.3 

1.3 

1.3 

1.3 

1.3

Dec.

1.3 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

1.3 

1.2 

1.1

1.1 

1.0 

1.0 

.8 

.9

.9 

.9 

.9 

.8 

.8

.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.8 

.8

Jan.

0.8 

.8 

.8 

.8 

.8

.8 

.7 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.5 

.4'.4

.4 

.4 

.4 

.5 

.5

.5 

.5 

.5 

.5 

.5 

.5

Feb.

0.5 

.6 

.6 

.6 

.8

.8 

.7 

.6

.6 

.6

.6 

.6 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

a. 4 

a. 4

a. 4

a. 4 

a. 4 

a. 4

Month

Octo 

Nove 

Dece

C&

Janu 

Febr 

Marc 

Apr! 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

aO.4 

a. 4 

a. 4 

.3 

.3

.3

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.2 

.2 

.2

.3 

.3 

.3 

.3 

.3

.3 

.3

.3 

.3 

.3 

.3

Apr.

0.3 

.3 

1.0 

1.6 

1.7

.8 

.4 

6.0 

2.0 

.9

.4

.8 

4.0 

1.4

.4 

2.7 

18 

16 

19

36 

29 

8.0 

1.5 

10

20 

8.3 

2.1 

1.7 

1.2

Secondfoot-days

46.5 

42.7 

30.6

1,248.3

18.0 

15.0 

9.3 

195.9 

180.2 

107.8 

75.4 

54.9 

48.8

825.1

May

2.0 

3.6 

3.8 

5.1 

1.8

1.4 

1.3 

1.3 

2.0 

12

19

7.9 

14 

6.8

1.8 

4.8 

5.1 

6.2 

4.8

7.2 

6.2 

9.4 

7.2 

5.4

6.0 

8.6 

5.1 

4.0 

3.4 

3.6

Maximum

2.9

1.6 

1.3

78

.8 

.8 

.4 

36 

19 

6.0 

9.8 

4.0 

4.0

36

June

3.4 

3.0 

3.2 

4.6 

6.0

5.1 

5.4 

3.0 

3.2 

3.8

3.8

4.0 

4.0 

4.0

3.8

2.6 

3.8 

4.0

3.4

3.0 

5.1 

4.3 

2.9 

2.4

2.0 

2.1 

2.4 

2.1 3.4

Minimum

July

2.7 

3.6 

3.8 

3.0

3,4

3.6 

1.8 

6.8

1.4 

1.2

9.8

.8 

.8 

.8

.9 

.9 

2.0 

.9 

1.9

2.6 

2.2 

2.2 

2.2 

1.9

4.0 

1.8 

2.0 

1.9 

1.3 

1.7

0.£

1.3 

.8

.3

.4 

.4 

.2 

.3 

1.3 

2.0 

.8 

.9 

.8

.2

Aug.

1.6 

1.9

1.0 

1.4 

1.2

1.3 

1.6 

1.3 

1 1 

1.1

1.1

1.1 

.9 

.9

2.7 

1.7 

2.2 

2.1

1.7

1.8 

1.5 

1.6 

1.6 

2.2

3.4 

2.9

2.0 

2.7 

4.0 

2.2

Mean

1.50 

1.42 

.99

3.42

.58 

.54 

.30 

6.53 

5.81 

3.59 

2.43 

1.77 

1.63

2.26

Sept.

2.0 

2.4 

1.8 

2.4 

2.0

2.4 

4.0 

3. '8 

3.0 

1.8

1.1

1.0 

1.0 

.8

.9 

.9 

1.1 

1.7 

3.4

1.0 

1.0 

.9 

.9 

1.0

1.1 

1.6 

1.0 

.9

Runoff In 

acre-feet

92 

85

61

2,480

36 

30 

18 

389 

357 

214 

150 

109 

97

1,640

a No gage-height record; discharge Interpolated.
156 GUNHISON RIVER BASIN

Ward Creek below Kiser Creek, near Cedaredge, Colo.

Location.--Water-stage recorder, lat. 38°53', long. 107°58', in SE£ sec. 26, T. 13 S., R. 

9S~B7, 1 mile downstream from Kiser Creek and 3 miles southwest of Cedaredge.

Drainage area. 57.8 square miles.

Records available.--September 1944 to September 1950.

Extremes.--Maximum discharge during year, 20 second-feet May 4; maximum gage height, 2.39 

reet Feb. 3 (ice jam); minimum daily discharge, 1.2 second-feet Sept. 1-4.

1944-50: Maximum discharge, 168 second-feet Apr. 21, 1948 (gage height, 3.68 feet), 

from rating curve extended above 65 second-feet; no flow July 14-17, 1946.

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

which are fair. Natural flow of stream affected by diversions to and from nearby 

streams, storage reservoirs, and diversions for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

6.2 

6.0 

6.0 

6.0 

6.0

6.5 

6.2 

6.5 

7.5 

7.8

7.5 

8.2 

8.0 

7.5 

7.2

7.0 

7.0 

6.8 

7.2 

7.5

8.0 

8.0 

8.2 

8.0 

8.0

7.8 

7.8 

7.8 

7.8 

7.5 

6.8

Nov.

6.5 

6.5 

6.8 

7.0 

7.2

7.2 

7.5 

*7.8 

7.8 

8.5

8.5 

7.8 

8.0 

7.8 

8.0

8.5 

8,2 

8.2 

8.2 

7.8

7.2 

7.0 

7.2 

7.5 

7.8

8.1 

8.2 

8.3 

8.2 

7.8

Dec.

7.6 

7.6 

7.5 

7.4 

7.5

7.7 

8.0 

8.0 

8.2 

8.0

7.7 

7.4 

6.6 

6.0 

6.5

7.5 

8.0 

8.5 

9.0 

*8.0

7.8 

7.0 

.0 

.0 

.0

.0 

.0 

.0 

.0 

.0 

.0

Jan.

7.2 

7.2 

7.2 

7.0 

b6. 4

be.i b6. 6 ' 

7.2 

7.2 

7.0

7.0 

6.8 

*6.0 

6.0 

6.2

6.5 

6.0 

6.5 

6.5 

6.5

6.5 

6.8 

7.0 

7.0 

6.5

b6.0 

b5'.8 

7.0 

7.0 

7.0 

7.0

- Feb.

7.8 

b6. 6 

b7.2 

7.8 

9.2

11 

9.8 

8.5 

7.8 

8.0

.8 

.2 

.8 

* .5 

.2

.2 

.5 

.2 

.2 

.5

.5 

.2

G'.B

6.8 

7.5 

8.2

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ai*y

ter year 1949-50 .......................

Mar.

6.5 

6.5 

6.5 

6.2 

6.2

6.2 

5.8 

5.8 

6.5 

*5.8

5.8 

5.8 

b5.8 

5.8 

5.8

5.5 

5.5 

5.5 

5.2 

5.8

5.5 

5.8 

5.8 

5.5 

5.5

6.0 

5.? 

5.2 

5.2 

5.8 

6.0

Apr.

6.2 

7.8 

7.8 

5.2 

4.4

5.2 

7.2 

11 

8.5 

5.5

4.0 

4.0 

7.0 

8.0 

7.2

7.5 

7.8 

8.8 

8.8 

8.2

8.5 

11 

8.2 

4.8 

4.4

4.2 

4.0 

4.4 

4.6 

4.2

Secondfoot-days

224.3

231.1 

230.5

3,027.4

206.7 

214.8 

180.0 

198.4 

98.0 

70.0 

58.8 

46.7 

49.8

1,809.1

May

3.6 

2.7 

2.4 

7.3 

7.2

2.7 

2.4 

2.4

2.1

2.8 

3.2 

4.0 

2.8 

3.0

3.4 

5.2 

2.4 

2.4 

2.7

5.5 

3.7 

2.8

2.3 

2.5

2.3 

2.4 

2.4 

2.3 

2.3 

2.4

Maximum

8.2 

8.5 

9.0

37

7.2 

11 

6.5 

11 

7.3 

3.7 

3.5 

2.2 

2.4

11

June

2.2 

2.0 

2.2 

2.3 

2.2

2.2 

2.2 

2.5

2.2

1.8

1.9 

2.2 

2.0 

2.3

2.3 

2.4 

2.4 

2.5

2.7

3.3 

3.7 

2.7 

2.3 

2.3

2.3 

2.3 

2.3 

2.0 

1.9

July

1.8 

1.6 

1.8 

3.0 

2.0

2.2 

2.5 

3.5

2.0

2.2 

1.8 

1.6 

1.8 

1.9

1.9 

1.9 

2.0 

1.9 

1.8

1.8 

1.8 

1.6 

1.8 

1.8

1.6

1.6 

1.6 

1.5 

1.5 

1.6

Minimum

6.0 

6.5 

6.0

3.2

5.8 

6.5 

5.2 

4.0 

2.1 

1.8 

1.5 

1.3 

1.2

1.2

Aug.

1.5 

1.6 

1.6 

1.8 

2.0

1.9 

2.0 

2.2

1.4

1.5 

1.4 

1.4 

1.3 

1.3

1.4 

1.3 

1.3 

1.3 

1.4

1.4 

1.5 

1.4 

1.4 

1.4

1.4 

1.4 

1.4 

1.4 

1.3 

1.3

Mean

7.24 

7.70 

7,44

8.2"9

6.67 

7.67 

5.81 

6.61 

3.16 

2.33 

1.90 

1.51 

1.66

4.96

Sept.

1.2 

1.2 

1.2 

1.2 

1.3

1.4 

1.4 

1.3

1.5

1.5 

1.5 

1.8 

1.6 

1.6

1.5 

1.5 

1.6 

2.4 

2.3

1.9 

1.8 

1.9 

2.0 

1.9

2.0 

1.9

2.0 

2.0 

2.0

Runoff In 

acre-feet

445 

458 

457

6,000

410 

426 

357 

394 

194 

139 

117 

93 

99

3,590

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 26 to Dec. 19; discharge computed on basis of recorded range in 

stage, weather records, and records for stations on nearby streams.
GUNNISON RIVER BASIN 157

Uncompahgre River at Colona, Colo.

Location.--Water-stage recorder,-lat. 38°19'50", long. 107°46'40", in NW£ sec. 17, T. 47 

N., K. 8 W., just downstream from county highway bridge and a quarter of a mile east 

of Colona. Datum of gage is 6,318.80 feet above mean sea level, datum of 1929. Prior 

to Oct. 1, 1949, at datum 1.00 foot higher.

Drainage area. 437 square miles.

Records available. March 1935 to September 1950. April 1903 to June 1906, April 1917 to 

November 1934 to site 3 miles upstream.

Average discharge.--34 years (1904-5, 1917-50), 288 second-feet.

Extremes.--Maximum discharge during year, 1,260 second-feet June 12 (gage height, 4.62 

feet); minimum daily, 27 second-feet Sept. 5.

1903-6, 1917-50: Maximum daily discharge, 4,080 second-feet June 13, 14, 1921; minimum daily, 16 second-feet Sept. 3, 1918.

Remarks. Records good. Diversions above station for irrigation.

Cooperation.--Twenty-eight discharge measurements furnished by Uncompahgre Valley Water 

Users Association.

Dl.soharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

68 

67 

65 

64 

70

83 

82 

71 

107 

112

125 

134 

134 

125 

118

116 

123 

125 

130 

132

136 

134 

134 

132 

130

130 

130 

123 

125 

130 

121

Nov.

121 

123 

121 

119 

114

112 

116 

116 

118 

118

127 

109 

119 

127 

132

127 

123 

118 

118 

114

109 

107 

104 

112 

102

99 

100 

100 

99

93

Dec.

92 

86 

86 

78 

76

84 

88 

88 

93 

93

7O 

a66 

a70 

376 

a8O

386 

H90 

a96 

a98 

388

a82 

80 

84 

86 

84

83 

80 

81 

80 

80 

81

Jan.

78 

74 

71 

57 

64

53 

54 

61 

73 

67

69

76 

75 

74 

71

75 

82 

84 

82 

86

87 

90 

96 

102 

87

71 

72 

88 

90 

90 

88

Feb.

76 

74 

68 

82 

82

92 

112 

100 

81 

75

90 

87 

82 

81 

78

81 

88 

92 

96 

99

109 

82 

90 

90 

105

116 

119 

116

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

107 

99 

96 

100 

112

116 

88 

80 

92 

88

88 

80 

68 

92 

88

84 

99 

114 

90 

98

87 

87 

93 

99 

104

92 

86 

78 

78 

92 

94

Apr.

125 

155 

204 

138 

145

180 

256 

330 

284 

210

198 

180 

192 

236 

242

213 

204 

268 

250 

256

345 

400 

406 

400 

284

284 

300 

256 

350 

264

Secondfoot-days

3,476 

3,417 

2,575

117,008

2,387 

2,543 

2,869 

7,555 

6,672 

18,950 

9,990 

1,914 

1,292

63,640

May

236 

264 

3OO 

340 

236

192 

175 

162 

1ST 

112

118 lie

121 

116

175

ISO 

196 

201 

185 

145

198 

256 

296 

234 

280

198 

201 

280 

204 

239 

565

Maximum

136 

152 

98

2,600

102 

119 

116 

406 

565 

862 

512 

137 

72

862

June

677 

663 

705 

424 

300

345 

502 

442 

474 

635

782 

852 

750 

750 

736

806 

BBS 

841 

764 

666

652 

694 

533 

547 

610

624 

610 

589 

568 

547

July

512 

458 

404 

388 

360

311 

316 

328

360 

372

382 

360 

338 

350 

416

372 

344 

477 

410 

360

300 

270 

255 

240 

225

205 

196 

191 

178 

160 

152

Minimum

64 

93 

66

64

53 

68 

66 

125 

112 

300 

152 

43 

27

27

Aug.

137 

123 

1O6 

95 

75

69 

66 

63 

60 

59

66 

68 

63 

59 

54

51 

50 

45 

46 

44

44 

43 

46 

44 

43

51 

57 

48 

48 

46 

45

Mean

112

114 

83.1

321

77. 0 

90.8 

92.5 

252 

215 

632 

322 

61.7 

43.1

174

Sept.

42 

38 

36 

31 

27

28 

31 

28 

31 

32

33 

36 

36

37 

39

38

35 

31 

40 

72

55 

56 

57 

59 

66

63 

56 

55 

54 

50

Runoff in 

acre-feet

6,890 

6,780 

5,110

232,100

4,730 

5,040 

5,690 

14,990 

13,230 

37,590 

19,810 

3,8OO 

2,560

126,200

Peak discharge (base, 1,250 sec. -ft.). June 12 (l a.m.) 1,260 sec. -ft.

a No gage-height record; discharge computed on bssls of 1 discharge measurement, weather records, 

and records for stations on nearby streams.
158 OUNNISON RIVER BASIN 

Uncompahgre'River at Delta, Colo.

Location. Water-stage recorder, lat. 38°45', long. 108°05', in Sw£ sec. 13, T. 15 S., R. 

9b w., 100 feet upstream from bridge on State Highway 92, at west edge of Delta, and H 

miles upstream from mouth. Datum of gage is 4,929.92 feet above mean sea level, datum 

of 1929.

Drainage area.--1,110 square miles.

Records available.--April 1924 to September 1931 (no winter records), September 1938 to 

September 195U. April 1903 to October 1923 at site 3? miles upstream.

Average discharge.--12 years (19*38-50), 315 second-feet.

Extremes. Maximum discharge during year, 780 second-feet June 12 (gage height, 3.92 feet); 

minimum daily, 83 second-feet Dec. 15.

1903-31, 1938-50: Maximum discharge recorded, 3,730 second-feet hay t>, 1941 (gage 

height, 5.90 feet, at same datum, site then in use), from rating curve extended above 

1,900 second-feet; minimum daily, 7 second-feet July 10-15, 17, 21, 24-28, 1910.

R'emarks.--Records fair. Natural flow of stream affected by transbasin diversions, diversions for irrigation, and return flow from irrigated areas.

Discharge, In second-feet, mater year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

253 

246 

250 

253 

250

246 

234 

243 

285 

378

397 

397 

438 

438 

403

368 

381 

387 

390 

394

381 

333 

304 

298 

301

288 

278 

282 

323 

282 

227

Nov.

212 

180 

145 

128 

118

116 

116 

112 

108 

108

112 

112 

112 

114 

128

130

128 

126 

123 

126

128 

135 

140 

128 

118

118 

112 

110 

104 

102

Dec.

102 

98 

104 

104 

104

104 

106 

104 

106 

108

102 

90 

86 

86 

83

118 

143 

140 

133 

133

*126 

116 

bl!2 

b!24 

b!20

130 

138 

138 

143 

140 

138

Jan.

143 

148 

145 

138 

b!25

b!18 

b!25 

b!38 

b!44 

138

140 

153 

143 

143 

138

135 

*14S 

135 

140 

140

143 

140 

148 

174 

156

bl35 

b!42 

b!55 

161 

150 

148

Feb.

145 

133 

b!20 

b!32 

145

145 

177 

209 

166 

140

140 

145 

*135 

130 

130

128 

128 

133 

143 

158

172 

153 

135 

140 

148

153 

163 

138

Month

Octo 

Nove 

Deee

Ca

Janu 

Pebn 

Hare 

Aprl

Mn v

June 

July 

Augu 

Sept

Wa

lendar year 194E 

apy

.......................

ter year 1949-50 .......................

Mar.

172 

150 

143 

135 

133

138 

128 

112 

110 

112

110 

114 

102 

100 

128

130 

121 

110 

114 

266

172 

108 

110 

100 

90

96 

135 

246 

174 

145 

126

Apr.

102 

197 

282 

333 

323

301 

250 

330 

426 

355

250 

212 

188 

177 

194

200 

161 

153 

180 

186

256 

320 

397 

422 

291

234 

218 

191 

224 

188

Secondfoot -days

9,928 

3,749 

3,579

114,589

4,426 

4,134 

4,130 

7,541 

4,709 

10,143 

6,936 

4,524 

8,132

71,931

May

161 

143 

148 

186

215

126 

114 

114 

112 

106

108 

121 

133 

123 

133

130 

128 

153 

140 

138

143 

166 

186 

200 

186

172 

158 

177 

169 

158 

262

Maximum

438 

212 

143

2,460

174 

209 

266 

426 

262 

522 

371 

172 

502

522

June

374 

368 

413 

317 

224

174 

218 

230 

227

310

406 

522 

400 

285 

384

432 

515 

509 

477 

378

333 

368 

355 

275 

301

314 

294 

282 

243 

215

July

197 

180 

166 

153 

143

138 

145 

191 

240 

269

336 

326 

262 

282 

291

349 

288 

371 

362 

288

256 

200 

172 

188 

169

169 

172 

166 

161 

153 

153

Mlnlnum

227 

102 

83

80

118 

120 

90 

102 

106 

174 

138 

128 

135

83

Aug.

150 

150 

153 

150 

145

150 

153 

145 

143 

143

148 

166 

172 

166 

166

143 

143 

138 

133 

130

128 

130 

130 

133 

140

145 

148 

150 

145 

143 

145

Mean

320 

125 

115

314

143 

148 

133 

251 

152 

338 

224 

146 

271

197

Sept.

143 

143 

138 

138

135

135 

140 

145 

161 

158

169 

186 

194 

221 

209

237 

278 

227 

250 

467

477 

486 

502 

477 

448

422 

435 

387 

342 

282

Runoff In 

acre -feet

19,690 

7,440 

7,100

227,300

8,780 

8,200 

8,190 

14,960 

9,340 

20,120 

13,760 

8,970 

16,130

142,700

Peak discharge (base, 900 sec. -ft.). No peak above base.

Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
GUNNINSON RIVER BASIN 159

Red Mountain Creek near Ironton, Colo.

Location.--Water-stage recorder, lat. 37°57°45", long. 107°39'40", in N| sec. 29, T. 43 N., 

 K. V W., 2 miles northeast of Ironton, 2 miles upstream from mouth. Datum of gage is 

9,585.58 feet above mean sea level (Bureau of Reclamation bench mark).

Drainage area.--17.8 square miles.

Records available.--August 1947 to September 1950.

Extremes.--Maximum discharge during year, 178 second-feet May 30 (gage height, 3.88 feet); 

minimum daily, 5.4 second-feet Feb. 21-24, 27.

1947-50: Maximum discharge, 331 second-feet June 18, 1949; maximum gage height, 4.55 

feet May 19, 1948; minimum daily discharge, that of Feb. 21-24, 27, 1950.

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

which are fair. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

14 

14 

13 

13 

13

13 

12 

13 

16 

14

16 

16 

16 

16 

16

15 

16

17 

16 

15

14 

15 

17 

17 

17

16 

16 

16 

17 

18 

*18

Nov.

17 

17 

16 

17 

17

16 

17 

17 17' 

17

b!6 

b!5 

b!6 

b!6 

17

16 

16 

16 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

Dec.

14 

14 

14 

14 

*14

12 

12 

12 

12 

12

10 

11 

9.6 

blO 

bll

bll 

b!2 

b!2 

b!3 

b!2

bll 

bll 

bll 

12 

11

10 

11 

11 

11 

11 

11

Jan.

11 

11 

10 

9.0 

9.4

b8.8 

b8.8 

b9.6 

*blO 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

11

11 

11 

11 

11 

10

7.0 

7.2 

7.8 

8.2 

8.6 

7.8

Feb.

.2

.O 

.0 

.0 

.8

*8.4 

8.0 

8.8 

11 

8.8

7.6 

8.0 

8.0 

6.8 

7.2

6.4 

6.0 

b6.0 

5.7 

5.7

5.4 

5.4 

5.4 

5.4 

6.8

6.0 

5.4

5.7

Month

Goto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May. 

June 

July 

Augu 

Sept

Wa

Lendar year 1949

uary. . . . 

h

ter year 1949-5O .......................

Mar.

6.0 

6.0 

6.6 

7.0 

9.0

8.0 

7.0 

7.0 

*S.O 

8.0

8.0 

7.4 

7.0 

7.5 

7.4

7.4 

8.0 

9.0 

9.0 

9.0

8.4 

8.4 

8.4 

8.4 

8.9

8.4 

8.0 

8.0 

8.0 

9.0 

10

Apr.

11 

13 

13 

12 

15

20 

*34 

26 

23 

20

20 

21 

26 

31 

26

23 

24 

26 

26 

31

47 

66 

81 

72 

66

75 

66 

67 

62 

49

Secondfoot-days

475 

476 

362.6

15,091.4

299.2 

193.9 

246.2 

1,092 

2,004 

3,267 

1,163 

513 

387

10,478.9

May

53

56 

60 

60 

45

40 

36 

31 

30 

31

35 

44 

27 

33 

40

45 

55 

50 

50 

60

79 

94 

104 

96 

98

91 

97 

100 

92 

124 

148

Maximum

18 

17 

14

300

11 

11 

10 

81 

148 

148 

70 

21 

18

148

June

148 

140 

126 

90 

76

97 

100 

91 

98 

118

130 

140 

136 

134 

134

140 

144 

136 

120 

104

102 

102 

78 

76 

95

88 

88 

86 

82 

7S

July

70 

61 

53 

52 

50

45 

42 

41 

40 

42

52 

45 

40 

37 

50

39

36 

36 

33

31

29

27 

25

25 

24

22 

24 

25 

23 

22 

22

Minimum

12 

15 

9.6

7.6

7.0 

5.4 

6.0 

11 

27 

76 

22 

13 

11

5.4

Aug.

21 

20 

21 

19 

19

20 

18 

18 

17 

17

20 

19

17 

18 

17

16 

15 

15 

15 

15

15 

14 

14 

14 

14

17 

15 

14 

13 

13 

13

Mean

15.3 

15.9 

11.7

41.3

9.65 

6.92 

7.94 

36.4 

64.6 

109 

37.5 

16.5 

12.9

28.7

Sept.

13 

13 

12 

12 

12

12 

13 

13 

12 

12

12 

12 

12 

12 

11

11 

12 

13 

18 

18

14 

14 

13 

14 

14

14

13 

12 

12 

12

Runoff In 

acre-feet

942 

944 

719

29,940

593 

385 

488 

2,170 

3,970 

6,480 

2,310 

1,020 

768

20,790

Peak discharge (base, 250 see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Nov. 19 to Dec. 4, Dec. 24 to Jan. 5, Jan. 1O to Feb. 5 {stage-discharge relation affected by Ice during part of periods) Mar. 2 to'Apr. 6j discharge computed on 

basis of 1 discharge measurement, recorded range In stage, weather records, and records for stations 

on nearby streams.
160 GUNNISON RIVER BASIN

East Fork Dallas Creek near Ridgway, Colo.

Location. Water-stage recorder, lat. 36°06', long. 107°49', in NE£ sec. 2, T. 44 N., R. 

9 W., l£ miles upstream from Beaver Creek and 5 miles southwest of Ridgway. Prior to 

. Oct. 1, 1949, at site 130*feet downstream, at datum 3 feet lower.

Drainage area.--14.4 square miles.

Records available.--October 1947 to September 1950.

Extremes. Maximum discharge during year, 97 second-feet June 16 (gage height, 3.55 feet); 

minimum not determined, occurred during period of no gage-height record.

1947-50: Maximum discharge, 297 second-feet June 18, 1949 (gage height, 3.43 feet, 

site and datum then in use), from rating curve extended above 100 second-feet; minimum 

daily, 4.5 second-feet Jan. 16, 1948.

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

which are poor. One diversion above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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 

16 

15 

15 

15

15 

15 

15 

15 

15

16 

16 

17 

16 

14

14 

15 

15 

15 

15

16 

16 

16 

15 

15

15 

15 

14 

14 

15 

14

Nov.

13 

13 

13 

13 

12

12 

11 

1O 

*8.9 

8.6

8.6 

9.O 

8.4 

8.O 

7.8

.6 

.4 

.4 

.6 

.6

.4 

.2 

.2 

.2 

.4

.6 

.6 

.4 

.6 

.6

Dec.

( )

8.O

Jan.

0

7.O

Feb.

( )

5.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Via

lendar year 1949

ter year 1949-50 .......................

Mar.

6.0 

5.6 

5.4 

5.4 

5.6

6.0 

6.0 

5.8 

6.2 

6.2

6.2 

6.0 

6.0 

6.2 

6.2

6.4 

*6.2 

5.9 

5.8 

5.9

5.4 

5.8 

5.8 

6.0 

6.0

5.6 

5.8 

5.8 

6.2 

5.9 

6.2

Apr.

6.4 

7.4 

7.7 

6.5 

6.8

8.2 

9.5 

11 

9.5 

8.0

7.4 

8.6 

8.9 

9.2 

9.2

8.3 

8.6 

8.9 

8.3 

8.6

9.2 

9.5 

9.5 

9,5 

8.6

9.2 

9.2 

9.2 

9.5 

9.2

Secondfoot-days

470 

268.1 

248.0

1O,O43.4

217. 0 

162.4 

183.5 

259.7 

393.1 

1,884 

1,737 

770 

397

6,989.8

May

9.2 

9.5 

9.8 

10 

9.2

9.2 

9.2 

9.2 

8.9 

8.9

8.9 

9.5 

9,5 

9.5 

9.8

9.8 

11 

11 

11 

11

12 

12 

13 

15 

16

15 

17 

20 

2O 

23 

36

Maximum

17 

13

222

6.4 

11 

36 84' 

72 

38 

16

84

June

41 

51 

54 

4O 

33

38 

47 

45 

49 

64

75 

78 

80 

8O 

82

84 

83 

79 

76 

68

65 

68 

53 

56 

65

65 

65 

64 

67 

69

July

72 

70 

65 

64 

62

62 

65 

65 

64 

64

68 

65 

62 

58 

68

64 

58 

6O 

53 

50

48 

47 

46 

45 

42

41 

43 

43 

41 

42 

40

Minimum

14 

7.2

-

5.4 

6.4 

8.9 

33 

4O 

17 

10

-

Aug.

38 

36 

34 

32 

32

31 

30 

29 

29 

27

29 

31 

27 

26 

25

24 

23 

22 

21 

21

20 

19 

18 

18 

18

20 

20 

18 

18 

17 

17

Mean

15.2 

8.94 

8.0

27.5

7.0 

5.8 

5.92 

8.66 

12.7 

62.8 

56.0 

24.8 

13.2

19.2

Sept.

16 

16 

16 

15 

15

15 

16 

15 

15 

15

14 

14 

13 

13 

12

12 

12 

12 

13 

13

12 

12 

12 

12 

12

12 

11 

11 

11 

10

Runoff In 

acre-feet

932 

532

492

19,920

430 

322 

364 

515 

780 

3,740 

3,450 

1,530 

787

13,870

Peak discharge (base, 120 sec.-ft.). Ho peak above base.

* Winter discharge measurement made on this day.

Note. No gage-height record Octx 1O to Nov. 8, Dec. 3 to Mar. 16 (stage-discharge relation affected by Ice most of period); discharge computed on basis of 3 discharge measurements, recorded 

range In stage, weather records, and records for stations on nearby streams. Stage-discharge relation affected by Ice Nov. 12 to Dec. 2.
GUMISON RIVER BASIN 161

Roubideau Creek at mouth, near Delta, Colo.

Location.--Water-stage recorder, lat. 38°44', long. 108°09', in sec. 19, T. 15 S., R. 96 

W., a quarter of a mile upstream from mouth and 5 miles west of Delta. Datum of gage 

is 4,864.34 feet above mean sea level, datum of 1929.

Drainage area. 245 square miles.

Records available.--March 1939 to September 1950.

Average discharge.--11 years, 139 second-feet.

Extremes.--Maximum discharge during year, 804 second-feet Apr. 24 {gage height, 3.93 feet); 

minimum daily, 29 second-feet Mar. 28.

1939-50: Maximum discharge, 2,950 second-feet Aug. 5, 1945 (gage height, 7.76 feet, 

site and datum then in use), from rating curve extended above 1,300 second-feet; minimum daily, 17 second-feet Mar. 20, 1940.

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. A few small diversions above station for irrigation.

Rating tables, water year 1949-50, except periods of ice effect

(gage height, In feet, and discharge, In second-feet)

(Shifting-control method used Dec. 17 to Jan. 4,

Feb. 18 to Mar. 25, Apr. 1-9)

Oct. 1 to Apr. 8 Apr. 9 to Sept. 30

1.4

1.5

1.6

1.7 58 2.4

109

205

1.4

1.6

1.7

98

136

255

420

745

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

36 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

130 

134 

141 

120 

118

120 

125 

137 

125 

134

137 

137 

134 

114 

109

123 

123 

123 

111 

111

99 

95 

99 

97 

101

89 

93 

91 

105 

105 

101

Nov.

84 

72 

62 

64 

62

65 

65 

*69 

79 

79

86 

91 

72 

66 

65

64 

56 

59 

64 

58

56 

56 

53 

57 

72

79 

71 

69 

66 

64

Dec.

62 

62 

66 

64 

65

68 

74 

75 

72 

77

77 

b58 

b46 

b49 

b50

b51 

52 

56 

65 

77

*65 

62 

58 

62 

57

56 

58 

53 

51 

52 

52

Jan.

51 

52 

52

50 

b50

b44 

b46 

b49 

b54 

b51

b54 

b56 

b54 

b54 

b47

b47 

*b50 

b52 

50

51

48 

45 

48 

61 

51

46 

48 

53 

37 

35 

35

Feb.

35 

b34 

b32 

b34 

b35

35 

44 

48 

42 

35

41 

40 

*40 

38 

37

36 

35 

36 

36 

38

38

31 

30 

30

30

30 

33 

39

Month

Goto 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

wa

lendar year 1949

ter year 1949-50

Mar.

37 

34 

33 

31 

34

36 

36 

31 

33 

32

33 

35 

30 

34 

35

34 

34 

34 

35 

36

37 

33 

31 

33 

39

44 

40 

29 

30 

34 

30

Apr.

Secondfoot-days

3,581 

2,025 

1,892

51,562

1,521 

1,012 

1,057 

10,275 

12,078 

3,747 

2,434 

1,684 

2,366

43,672

53

75 

97 

87 

66

69

107 

202 

303 

236

182 

156 

192 

267 

297

264 

261 

354 

413 

448

532 

648 

704 

740 

656

588 

628 

616 

548 

484

May

440 

452 

596 

604 

516

436 

368 

322 

270 

248

258 

368 

392 

396 

500

504 

504 

488 

492 

472

424 

420 

406 

388 

357

297 

261 

245 

230 

212 

212

Maximum

141 

91 

77

856

61 

48 

44 

740 

604 

235 

107 

92 

168

740

June

230 

235 

230 

220 

198

169 

173 

162 

136 

124

122 

116 

103 

82 

95

87 

81 

82 

88 

92

81 

96 

114 

114 

124

116 

75 

68 

68 

66

July

55 

58 

57 

55 

61

58 

63 

87 

87 

93

105 

107 

96 

98 

96

90 

90

105 

103 

96

87 

93 

96 

87 

74

64 

55 

53 

57 

54 

54

Aug.

Minimum Mean

89 116 

53 67.5 

46 61.0

25 141

35 49.1 

30 36.1 

29 34.1 

53 342 

212 390 

66 125 

53 78.5 

38 54.3 

37 78.9

29 120

52 

53 

55 

54 

47

49 

55 

53 

54 

54

54 

63 

64 

58 

52

47 

44 

42 

42 

41

39 

38 

40 

39 

39

54 

92 

90 

78. 

72 

70

Sept.

64 

55 

47 

42 

37

38 

37 

39 

42 

43

58 

70 

87 

87 

87

69 

58 

66 

92 

168

130 

110 

118 

122 

126

120 

100 

90 

84 

80

Runoff In 

acre-feet

7,100 

4,020 

3,750

102,300

3,020 

2,010 

2,100 

20,380 

23,960 

7,430 

4,830 

3,340 

4,690

86,630

Peak discharge (base, 810 sec. -ft.). No peak above base.

* Winter discharge measurement, made on this day. 

b Stage-discharge relation affected by Ice. 

Note. No gage-height record Aug. 12 to Sept. 12, Sept. 15-30; discharge computed on basis of 

recorded range In stage, weather records, and records for stations on nearby streams.
162 GUNNISON RIVER BASIN

Kahnah Creek near Whitewater, Colo.

Location. Water-stage recorder and concrete control, lat. 38°59 | , long. 108°14', in 

 sec. 34, T. 12 S., R. 97 W., a quarter of a mile downstream from intake of pipe line 

for Grand Junction water supply and 17 miles east df Whitewater.

Drainage area. 55.0 square miles.

Records available. October 1917 to September 1921 and October 1933 to September 1950 in 

reports or geological Survey. October 1917 to September 1921 and August 1922 to 

September 1950 in reports of State engineer.

Average discharge (combined flow). 32 years, (1917-21, 1922-50), 42.6 second-feet.

Extremes (combined flow) . Maximum discharge during year, 538 second-feet May 21; minimum 

daily, Y.I secona-reet Mar. 11.

1917-21, 1922-50: Maximum discharge, 1,630 second-feet June 6, 1921 (gage height, 

4.5 feet, site and datum then in use), from rating curve extended above 700 secondfeet; minimum daily, 4.3 second-feet Dec. 19, 1939.

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

wnien are fair. Figured 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 discharge to give total flow of stream. Regulation by a few small reservoirs above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6

7 

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.

9.9 

9.0 

6.4 

5.9 

5.4

5.4 

4.8 

5.4 

7.4 

8.0

9.0 

9.9

18 

21 

18

16

16 

16 

19 

18

17 

15 

13 

14 

14

15 

16 

17 

18 

19 

*17

Nov.

16 

16 

16 

14 

7.4

7.4 

8.0 

9.0 

8.0 

6.4

6.9 

b5.5 

b6.5 

b6.5 

6.4

5.9 

5.9 

6.4 

7.4 

6.9

6.9 

6. -9 

b6.8 

6.9 

6.9

6.9 

6.9 

6.9 

6.9 

6.9

Dec.

6.9 

b7.8 

b7.8 

b7.8 

*7.4

6.9 

5.9 

5.9 

5.9 

6.4

6.4 

b5.4 

b5.2 

b5.0 

b4.8

b5.2 

b6.4 

b6.4 

b7.4 

b7.4

b7.4 

b6.4 

b6.4 

7.4 

6.4

6.4

7.4 

7.4 

7.4 

7.4 

7.4

Month

Octo 

Nove 

Decs

Ca

Janu 

Febn 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

nber. ..............

lendar year 1949 . .

ti. ................

St..... ............

amber. .............

ter year 1349-50 .

Jan.

8.4 

8.4 

7.4 

6.4

5.4

5.4

5.4 

5.4 

*7.4 

7.4

7.4 

7.4 

7.4 

6.4 

6.4

6.4 

6.4 

6.4 

6.4 

5.4

5.4 

5.4 

6.8 

6.8 

6.8

6.8 

6.8 

6.0 

6.0 

6.0 

6.0

Feb.

5.8 

5.5 

5.5 

5.5 

5.5

*5.5 

5.5 

6.0 

6.0 

5.8

5.6 

5.3 

5.3 

4.7 

4.6

4.5 

4.4 

4.2 

4.2 

4.2

6.1 

4.0 

5.0 

3.6 

3.6

3.5 

4.2

4.2

_ -1

liar.

*4 

4 

4 

4 

4

4 

4 

4 

3 

3

3 

b3 

3

4 

4

4

4 

4 

4 

4

4 

3 

2 

1

1

1 

1 

2 

2

1 

2

.3 

.3

.8 

.8 

.8

.8 

.8 

-8 

.8 

.5

.2 

.6 

.5 

.8 

.3

.3 

.3 

.8 

.8 

.3

.3 

.8 

.4 

.8 

.8

.8 

.3

.4 

.4 

.6 

.4

Apr.

3 

4 

5 

5 

3

3

5 

6 

4 

4

4 

6 

8 

5

5

5 

5 

8 

8 

9

14 

21 

26 

25 

22

22 

28 

25 

24

21

.5 

.8 

.9 

.4

.0

.5 

.4 

.4 

.3 

.3

.8 

.4 

.0 

.9 

.9

.4 

.9 

.5 

.5 

.0

May

21 

22 

28 

30 

24

23

20 

19 

16 

14

15 

24 

39 

51 

72

132 

172 

180 

183 

199

248 

262 

217 

166 

119

90 

92 

95 

88 

101 

119

Observed

Secondfoot-days

403.5 

241.4 

205.7

12,453.3

201.8 

137.8 

112.6 

342.8 

2,881 

1,308 

614.3 

263.1 

114.1

6,826.1

Discharg

Maximum

21 

16 

7.8

336

8.4 

6.1 

4.8 

28 

262 

104 

38 

23 

7.4

262

? in second-feet

Minimum

4.8 

5.5 

4.8

2.2

5.4 

3.6 

1.3 

3.0 

14 

15 

7.4 

1.6 

1.6

1.3

Peak discharge, combined flow (base, 450 sec. -ft

Mean

13.0 

8.05 

6.64

34.1

6.51 

4.92 

3.63 

11.4 

92.9 

43.6 

19.8 

8.49 

3.60

18.7

Runoff in 

acre-feet

800 

479 

408

24,710

400 

273 

223 

680 

5,710 

2,590 

1,220 

522 

226

13,530

June

104 

104 

104 

98

67

70 

64 

51 

48 

44

39 

36 

35 

34 

40

36 

35 

34 

35 

34

29 

26 

24 

19

17

16 

16 

15 

17 

17

July

23 

23 

26 

25 

25

22 

30 

38 

34 

23

21 

17 

15 

14 

14

12 

16 

16 

17 

9.9

7.4 

8.5 

8.5 

18 

19

20 

23 

23 

23 

20 

23

Diversions 

(acrefeet)

366 

321 

291

6,350

263 

206 

323 

534 

873 

699 

707 

708 

577

5,870

Aug.

23

20 

13 

14 

14

13 

11 

14 

13 9-.0

13 

12 

9.9 

5.9 

3.8

5.4 

6.4 

5.9 

5.4 

6.4

7.4 

7.4 

6.9 

3.8 

4.3

3.5 

3.2

2.7 

1.6 

2.4 

1.8

Sept.

1.6 

1.6 

1.6 

3.8 

4.3

7.4 

6.9 

6.9 

6.4 

6.4

3.5 

5.4 

4.8 

3.8 

3.5

3.5 

3.5 

2.7 

3.2 

4.S

3.0 

2.7 

2.7 

2.7 

2.7

2.7 

3.0 

3.0 

3.0 

3.0

Adjusted for 

diversion

Runoff in 

acre-feet

1,170 

800 

699

31,060

663 

479 

546 

1,210 

6,580 

3,290 

1,'930 

1,230 

803

19,400

, Mean (secondfeet)

19.0 

13.4 

11.4

42.9

10.8 

8.62 

8.89 

20.4 

107 

55.4 

31.3 

20.0 

13.5

26.8

.).-- May 21 (7 p.m.) 538 sec. -ft.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 22-30, Dec. 24 to Feb. 28 (stage-discharge relation affected by 

Ice most of period); discharge computed on basis of 2 discharge measurements, recorded range In stage

weather records, and records for stations earby streams.
DOLORES RIVER BASIN 163

Dolores River at Dolores, Colo.

Location.--Water-stage recorder, lat. 37°28', long. 108°30', In sec. 9, T. 37 N., R. 15 

w., 250 feet upstream from bridge on State Highway 184 in Dolores and a quarter of a 

mile upstream from Lost Canyon Creek. Datum of gage is 6,924.91 feet above mean sea 

level, datum of 1929.

Drainage area. 556 square miles.

Records available. June 1895 to October 1903, August 1910 to December 1912 (at site Just 

downstream rrom Lost Canyon Creek), May 1922 to September 1927 (monthly discharge), and 

October 1933 to September 1950 in reports of Geological Survey. June 1895 to October 

1903, August 1910 to December 1912 and April 1922 to September 1950 in reports of State 

engineer.

Average discharge. 29 years (1921-50), 482 second-feet.

Extremes.--Maximum discharge during year, 2,040 second-feet Apr. 23 (gage height, 4.69 

feet); minimum daily, 31 second-feet Dec. 4.

1895-1903, 1910-12, 1922-50: Maximum discharge, 10,000 second-feet Oct. 5, 1911 

(gage height, 10.2 feet, site and datum then in use), from rating curve extended above 

2,800 second-feet; minimum dally, 8 second-feet Aug. 16, 1896.

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

Diversions above station for Irrigation.

Revisions (water year).--W 859: 1937.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

119 

109 

104 

119 

124

124 

121 

119 

132 

92

77 

77 

77 

77 

75

73 

77 

116 

168 

124

102 

99 

106 

99 

90

90 

88 

84 

79 

79 

73

Nov.

73 

73 

73 

71 

71

69 

69 

69 

73 

79

88 

64 

68 

77 

88

77 

79 

71 

71 

68

*66 

62 

57 

73 

69

57 

54 

59 

59 

48

Dec.

50 

49 

39 

31 

37

56 

55 

55 

60 

54

37 

36 

39 

*43 

45

47 

47 

48 

49 

48

41 

35 

40 

42 

41

42 

46

52 

54 

*56 

58

Jan.

60 

64 

56 

35 

38

36 

38 

40 

45

41

43 

44 

43 

42 

4O

*2

45 

*48 

48 

45

40 

45 

50 

48 

45

40 

44 

47 

50 

47 

45

Feb.

42 

40 

47 

52 

58

60 

*59 

54 

53 

52

54 

52 

52 

56 

60

64 

67 

70 

68 

74

7O 

66 

70 

80 

82

87 

92 

100

Month

Octo 

Nove 

Deee

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 194£

ter year 1949-50 .......................

Mar.

96 

90 

92 

92 

97

*102 

99 

84 

104 

90

79 

86 

56 

69 

90

63 

75 

1O2 

94 

119

109 

129 

134 

147 

190

179 

163 

132 

129 

139 

142

Apr.

185 

288 

425 

393 

43O

5 2O 

610 

1,110 

953 

629

584 

636 

658 

760 

716

638 

738 

984 

1,090 

1,190

1,520 

1,740 

1,750 

1,730 

1,490

1,480 

1,500 

1,360 

1,37O 

1,110

Secondroot-days

3,093 

2,075 

1,432

192,570

1,394 

1,781 

3,377 

28,577 

32,548 

' 27,709 

7,994 

4,920 

2,585

117,485

Peak discharge (base. 1,800 sec. -ft. ) .--Apr. 23 (1:30

May

1,120 

1,170 

1,250 

1,340 

1,030

885 

816 

753 

665 

686

760 

840 

730 

7b3 

867

792 

939 

957 

1,O20 

975

1,170 

1,210 

1,250 

1,220 

1,300

1,290 

1,300 

1,34O 

1,190 

1,290 

1,640

Maximum

168 

88 

60

5,930

64 

10O 

19O 

1,750 

1,64O 

1,690 

366 

220 

131

1,750

June

1,630 

1,530 

1,690 

1,340 

1,140

1,260 

1,420 

1,210 

1,090 

1.O80

1,130 

1,170 

1,100 

1,040 

975

930 

912 

832 

730 

638

584 

672 

723 

558 

496

436 

390 

366 

I 331 

3O6

July

235 

259 

297 

289 

282

263 

322 

366 

293 

255

340 

282 

244 

274 

335

285 

230 

266 

259 

238

234 

227 

214 

205 

220

214 

205 

202 

205 

2 OS 

196

Minimum

73 

48 

31

31

35 

40 

56 

185 

665 

306 

196 

69 

54

31

a.m.) 2,040 sec. -ft.;

Aug.

190 

?14 

217 

214 

214

217 

211 

196 

199 

196

208 

220 

2O5 

199 

193

190 

193 

193 

193 

173

86 

76 

71 

69 

86

102 

93 

86 

76 

71 

69

Mean

99.8 

69.2 

46.2

528

45. 0 

63.6 

1O9 

953 

1,050 

924 

- 258 

159 

86.2

322

Sept.

69 

69 

74 

72 

76

82 

95 

129 

131 

91

81 

71 

68 

58 

71

89 

82 

86 

95 

117

112 

108 

112 

106 

102

81 

77 

66 

71 

54

Runoff in 

acre-feet

6,130 

4,120 

2,840

382,000

2,760 

3,53O 

6.70O 

56,68O 

64,560 

54,96O 

15,860 

9,760 

5,13O

233,000

May 31 (4:3O a.m.)

1,88O sec.-ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Dec. 7-10, Dec. 12 to Mar. 5 (stage-discharge relation affected by ice 

most of period); discharge computed on basis of 4 discharge measurements, weather records, and records for stations on nearby streams.
164 DOLORES RIVER BASIN

Dolores River near McPhee, Colo.

Location.--Water-stage recorder, lat. 37°34', long. 108°34', in NEj sec. 12, T. 38 N., R. 

16 w., 0.8 mile downstream from Beaver Creek and $.\ miles northwest of McPhee. Datum 

of gage is 6,666.45 feet above mean sea level, unadjusted.

Drainage area.--793 square miles.

Records available. October 1938 to September 1950.

Average discharge. 12 years, 404 second-feet.

Extremes. Maximum discharge during year, 2,320 second-feet Apr. 8 (gage height, 4.28 feet, 

from recorded range in stage); minimum daily, 1.3 second-feet Oct. 22-26.

1938-50; Maximum discharge, 8,650 second-feet Oct. 13, 1941 (gage height, 7.58 

feet), from rating curve extended above 5,900 second-feet; minimum daily, 0.6 secondfoot Sept. 19-24, 1949.

Remarks.--Records excellent above 50 second-feet and good below except those for periods 

or ice effect or no gage-height record, which are fair. Montezuma Canal diverts water 

just below station at Dolores to irrigate 30,000 acres in Montezuma Valley.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.9 

1.8 

1.7 

1.7 

1.8

1.8 

1.9 

1.8 

2.4 

2.4

1.9 

1.8 

1.8 

1.8 

1.7

1.7 

1.8

1.9 

2.8

2.2

1.7 

1.3 

1.3 

1.3 

1.3

1.3

4.0 

53 

36 

5.0 

2.8

Nov.

2.4 

2.0 

2.0 

1.9 

1.9

1.9 

1.9 

1.9 

2.8 

3.8

22 

63 

61 

65 

49

9.0 

7.0 

6.0 

5.5 

5.0

*5.0 

5.0 

5.0 

4.0 

4.0

4.5 

4.5 

4.0 

4.5 

4.5

Dec.

4.0 

8.0 

7.0 

42 

45

53 

55 

53 

65

b56

b40 

b40 

b43 

*43 

45

45 

40 

40 

40 

40

35 

33 

40 

40 

40

40 

40 

40 

40 

*40 

40

Jan.

50 

55 

50 

30 

30

30 

30 

35 

40 

35

35 

40 

40 

38 

35

37 

40 

*35 

20 

10

5 

5 

10 

10 

10

20 

35 

40 

40 

40 

38

Feb.

35 

35 

42 

45 

50

50 

*50 

45 

45 

45

45 

45 

45 

48 

50

54

60 

65

63 

70

65 

56 

55 

65 

65

70 

75 

75

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

Mov

June 

July 

Augu 

Sept

Wa

lendar year 1949

1..................................... ..

ter year 1949-50 .......................

Mar.

71 

65 

67 

84 

92

*98 

111 

103 

78 

63

44 

45 

36 

44

29

20 

22

27 

32 

46

40 

43 

41 

45 

85

95 

75 

61 

58 

58 

60

Apr.

2 

1 

1

1

1 

1

1 

2 

2

2

1

1 

1 

1 

1

Secondfoot-days

147.6 

360.0 

1,232.0

162,538.0

968 

1,513 

1,838 

33,357 

16,391 

11,996.2 

316.5 

97.3 

132.6

68,349.2

100 

200 

360 

340 

500

620 

900 

280 

700 

100

800 

840 

860 

907 

880

800 

900 

050 

200 

400

700 

000 

210 

120 

850

600 

300 

050 

070 

720

May

735 

745 

752 

840

736

430 

371 

290 

222 

222

260 

327 

265 

245 

327

290 

378 

430 

479 

437

584 

648 

672 

632 

704

696 

704 

744 

592 

664 

970

Maximum

53 

65 

65

5,480

55 

75 

111 

2,280 

970 

1,090 

61 

6.5 

14

2,280

June

1,030 

952 

1,090 

792 

576

656 

856 

648 

523 

501

530 

576 

523 

465 

403

358 

340 

285 

204 

127

78 

86 

231 

83 

27

14 

12 

12 

9.7 

8.5

July

7.0 

7.0 

7.0 

7.5 

7.0

8.5 

16 

61

17

9.7

30 

13 

10 

9.0 

9.0

15

9.0 

7.5 

7.5 

7.0

7.0 

6.0 

6.0 

6.0 

6.0

6.0 

3.4 

2.4 

2.6 

2.8 

3.6

Aug.

3.2 

3.2 

3.2 

3.4 

3.2

3.4 

3.4 

3.0 

3.2 

3.6

3.8 

3.6 

3.6 

3.4 

3.4

3.0 

2.8 

2.8 

2.8 

2.8

2.4 

2.6 

2.8 

2.8 

2.4

3.4 

6.5 

2.4 

2.8 

2.4 

2.0

Sept.

1.8

l.s

1.8 

1.9 

2.0

2.2 

2.4 

3.6 

6.0 

5.5

3.6 

2.4 

1.7 

1.5 

1.6

1.5 

1.5 

2.4 

3.4 

5.0

14 

8.0 

8.0 

9.0 

9.0

7.5 

6.5 

6.0 

5.5 

5.5

Minimum Mean ££«.£

1.3 4.76 293 

1.9 12.0 714 

4.0 39.7 2,440

.6 445 322,400

5 31.2 1,920 

35 54.0 3,000 

20 59.3 3,650 

100 1,112 66,160 

222 529 32,510 

8.5 400 23,790 

2.4 10.2 628 

2.0 3.14 193 

1.5 4.42 263

1.3 187 135,600

Peak discharge (base, 1,900 sec. -ft.). Apr. 8 (time unknown) 2,320 sec. -ft.; Apr. 23 (time un-

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 14 to Mar. 6 (stage-discharge relation affected by ice most of 

period), Mar. 17 to Apr. 13, Apr. 15 to May 2; discharge computed on basis of 4 discharge measurements, recorded range In stage, weather records, and records for station at Dolores.
DOLORES RIVER BASIN 165

Dolores River at Gateway, Colo.

Location. Water-stage recorder, lat. 38°41', long. 108°58', in SW£ sec. 15, T. 51 N., R. 

19 W., 500 feet 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. Datum of gage is 4,547.44 feet above mean sea level, unadjusted.

Drainage area. 4,350 square miles.

Records available. March 1937 to September 1950.

Average discharge. 13 years, 1,033 seoond-feet.

Extremes. Maximum discharge during year, 5,600 second-feet Apr. 9 (gage height, 5.81 

feet); minimum daily, 23 second-feet Sept. 6.

1937-50: Maximum discharge, 15,400 second-feet May 14, 1941 (gage height, 11.33 

feet, present site); minimum daily, that of Sept. 6, 1950.

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 1950 are given in Water-Supply Paper 1189.

Rating table, water year 1949-50 (gage height, in feet,

and discharge, in second-feet)

(Shifting-control method used Nov. 21 to Dec. 13, 

Jan. 30 to Apr. 8, July 31 to Aug. 15)

-0.3 18 0.3 124 2.7 1,630 

-.2- 26 .4 155 3.5 2,420 

-.1 40 .8 330 4.5 3,620 

0.0 58 1.2 540 5.3 4,300 

.2 100 1.7 860

J>ay

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

?3 

24 

25

26 

27 

28 

29 

30 

31

Oct.

110 

110 

100 

91 

89

82 

72 

74 

S5 

105

136 

146 

143 

143 

143

146 

140 

143 

262 

294

267 

218 

195 

187 

183

175 

175 

167 

167 

167 

163

Nov.

155 

152 

167 

183 

179

171 

163 

167 

167 

171

187 

191 

183 

159 

159

155 

159 

191 

218 

195

159 

146 

140 

136 

163

159 

155 

152 

155 

152

Dec.

149 

143 

140 

130 

127

122 

124 

146 

155 

183

187 

159 

117 

112 

112

122 

149 

204 

231 

231

183 

122 

159 

133 

187

208 

183 

159 

149 

140 

167

Jan.

208 

213 

236 

208 

146

110 

102 

124 

133 

152

163 

163 

175 

208 

222

249 

187 

183 

195 

222

226 

231 

231 

276 

272

222 

183 

149 

171 

183 

200

Feb.

195 

191 

187 

187 

213

303 

455 

588 

430 

326

303 

316 

298 

267 

258

267 

187 

262 

262 

258

280 

290 

262 

267 

280

267 

262 

303

Month

Octo 

Kove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50

Mar.

326 

345 

4OO 

335 

303

290 

294 

285 

308 

303

285 

290 

290 

258 

240

249 

236 

226 

226 

204

218 

222 

222 

236 

272

316 

480 

455 

380 

326 

316

Apr.

1, 

1,

1, 

1, 

2, 

4, 

3,

1, 

1, 

1, 

2, 

2,

1, 

1, 

1, 

2, 

2,

2, 

3, 

3, 

3, 

3,

2, 

2, 

2, 

2, 

2,

Secondfoot-days

4,678 

4,989 

4,S33

414,419

5,943 

8,049 

9,136 

64,662 

39,163 

33,776 

10,867 

2,221 

2,403

190,720

Peak discharge (base, 4,000 sec. -ft.). Apr. 9 (l p.m.

312 

345 

755 

330 

380

370 

720 

340 

660 

120

920 

800 

860 

080 

000

890 

800 

900 

110 

160

360 

050 

630 

720 

260

700 

540 

420 

120 

010

May

1,820 

1,600 

1,610 

1,610 

1,690

1,670 

1,430 

1,180 

1,050 

937

867 

839 

902 

965 

993

1,060 

1,150 

1,170 

1,180 

1,190

1,190 

1,190 

1,290 

1,350 

1,380

1,330 

1,320 

1,320 

1,340 

1,310 

1,230

Maximum

294 

218 

231

8,890

276 

588 

480 

4,660 

1,820 

1,730 

666 

130 

440

4,660

June

1,470 

1,730 

1,690 

1,690 

1,590

1,310 

1,180 

1,300 

1,370 

1,230

1,200 

1,250 

1,30O 

1,320 

1,270

1,210 

1,180 

1,150 

1,100 

1,000

881 

818 

797 

769 

769

i 748 

1 678 

1 636 

58S 

552

July

534 

516 

455 

425

420

400 

370 

405 

435 415-

480 

440 

425 

405 

395

666 

480 

350 

335 

312

280 

240 

213 

191 

167

155 

163 

146 

280 

226 

143

Aug.

124 

114 

105 

92 

91

89 

87 

102 

98 

112

130 

89 

87 

82

70

64 

68 

63 

57 

50

45 

41 

36 

33 

30

35 

34 

54

S

41

Minimum Mean

72 151 

136 166 

112 156

64 1,135

102 192 

187 2S7 

204 295 

312 2,155 

839 1,263 

552 1,126 

143 351 

30 71.6 

23 80.1

23 523

) 5,600 sec. -ft.; Apr. 24 (10 a.ra

Sept.

37 

33 

30 

27 

25

23 

35 

45 

43 

41

40 

37 

37 

34 

32

32 

29 

26 

72 

440

345 

222 

122 

93 

S9

85 

S2 

93 

82 

72

Runoff in 

acre-feet

9,230 

9,900 

9,590

822,000

11,790 

15.96O 

18,120 

128,300 

77,680 

66,990 

21,550 

4,410 

4,770

378,300

.) 4,220

sec.-ft.

Note. No gage-height record Apr. 17, 18, July 6, 7, Aug. 16 to Sept. 10j discharge computed on 

basis of discharge measurement Sept. 5, limit of stage, and records for Gunnison River near Grand 

Junction.
lb° DOLORES RIVER BASIN

Twomile Creek near La Sal, Utah

Location. Water-stage recorder, lat. 38°21', long. 109°07', in sec. 24, T. 28 S., R. 25 E. 

Just downstream 'from Pole Springs .Canyon and 85 miles northeast of La Sal.

Drainage area..-T21.9 square miles.

Records available. August 1944 to September 1950.

Extremes.--Maximum discharge during year, 43 second-feet Apr. 7 (gage height, 2.59 feet); 

minimum daily, 0.2 second-foot Sept. 12, 13.

1944-50: Maximum discharge, 96 second-feet May 1, 1945 (gage height, 3.07 feet), 

from rating curve extended above 57 second-feet; minimum daily, 0.1 second-foot 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. Three diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

0.4 

.4 

.4 

.4 

.4

.4 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

 5

.5 

.5 

.5 

.8 

.6

.7 

.7 

.8 

.8 

.8

.8 

.8 

.8 

.7 

.7 

.6

Hov.

0.6 

.6 

.6 

.6 

.6

.6

.6 

*.7 

.7 

.7

.8

.7 

.7 

.7 

.7

.7 

.7 

.7 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

Dec.

0.6 

.6 

.5 

.5 

.6

.6 

.6 

.6 

.7 

.7

b.6 

b.5 

b.5 

b.5 

*b.5

b.5 

b.5 

b.5

b.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5 

.5

Jan.

0.5 

.5 

.5

.5

.5 

.5 

.5 

.5 

.5

.5 

*.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.4 

.4 

.4 

.4 

.4 

.4

Feb.

0.4 

.4 

.4 

.4 

.4

.4 

.4 

.4 

*.4 

.4

.4 

.4 

.4 

.4 

.4

.5 

.5 

.5 

.5 .5'

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mnv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Peak discharge (base, lo sec. -ft. }. Apr.

* Winter discharge measurement made on thl

Mar.

0.5 

.5 

.5 

.6 

.6

.6 

.6 

.6 

.8 

*1.0

1.1 

1.1 

1.2 

1.3 

1.4

1.4 

1.6 

2.3 

2.3 

2.3

2.3 

2.4 

2.3 

*2.6 

2.4

2.2

1.7 

2.0 

1.3 

1.5 

3.1

Apr.

8.0 

13 

16

13 

13

19 

27 

26 

20

12

10 

15 

20 

20 

15

13 

16 

17 

13 

12

14 

15 

15 

13 

10

9.5

9.5 

9.1 

7.6 

7.3

Secondfoot-days

18.0 

19.2 

16.6

1,629.7

14.9 

12.5 

46.3 

428.0 

61.4 

18.9 

13.6 

11.0 

11.4

671.8

May

6.5 

2.0 

1.3 

1.3 

1.8

2.0 

2.0 

2.0 

1.3 

1.1

1.1 

.9

1.1 

1.1

1.7

2.8

3.1 

3.7 

3.7 

3.7

3.7

3.1 

1.3 

.8 

1.1

1.1 

1.1 

1.1 

.9 

1.3 

1.7

1 

Maximum

0.8 

.8 

.7

49

.5 

.5 

3.1 

27 

6.5 

1.7 

1.1 

.4 

.5

27

7 (8 p.m.) 43 Bee. -ft. 5 

s day.

June

0.9 

.8

.7

.7 

.7

.7 

.6 

.8 

.9

1.7

1.3 

.8 

.5 

.5 

.5

.5 

.7 

.5

July

0.4 

.4 

.3 

.3 

.3

.3 

.4 

.4

1.1 

1.1

.6 

.8 

.5 

.4 

.4

.4 

.4 

.4

.3 

.3

.3 

.3 

.3 

.4 

.4

.4 

.4 

.4 

.4 

.4 

.4

Aug.

0.4 

.4 

.4 

.4 

.4

.3 

.3 

.3 

.3 

.3

.4 

.3 

.3

.3 

.3

.3 

.3 

.3 

.3 

.3

.4 

.4 

.4 

.4 

.4

.4 

.4 

.4

.1 

.4

Minimum Mean

0.4 0.58 

.6 .64 

.5 .54

.2 4.46

.4 .48 

.4 .45 

.5 1.49 

7.3 14.3 

.8 1.98 

.4 .63 

.3 .44 

.3 .35 

.2 .38

.2 1.84

Sept.

0.4 

.4 

.3 

.4 

.4

.4 

.5 

.4 

.4 

.4

.4 

.2 

.2 

.3 

.3

.3 

.3 

.4 

.5 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4 

.4 

 4

Runoff In 

acre -feet

36 

38 

33

3,230

30 

25 

92 

849 

122 

37 

27 

22 

23

1,330

Apr. 13 (8 p.m.) 35 sec. -ft.

b Stage-discharge relation affected by ice. 

Note. Ho gage-height record Jan. 12 to Mar. 23; discharge computed on basis of 3 discharge measurements made 3 miles downstream, weather records, and records for stations on nearby streams.
DOLORES RIVER BASIN 167

West Paradox Creek near Paradox, Colo.

Location.--Water-stage recorder, lat. 38°23'00", long. 108°59'45", In NW^SW^ sec. 29, T. 

48 N., R. 19 W., at La Sal National Forest boundary and 2 miles northwest of Paradox.

Records available. August 1944 to September 1950.

Extremes. Maximum discharge during year, 41 second-feet Apr. 7 (gage height, 2.58 feet); 

minimum daily, 0.2 second-foot Jan. 27, 28, Feb. 2-5, 8-10.

1944-50: Maximum discharge not determined, occurred Sept. 27, 1948 (gage height, 

5.96 feet); minimum dally, 0.1 second-foot Mar. 1-13, 1946, Jan. 28, 29, Dec. 2-10, 

1948.

Remarks. Records good above 15 second-feet and fair below. Diversions from Geyser and 

Deep Creeks in Roc Creek Basin are stored in Buckeye Reservoir (capacity 3,000 acrefeet) released down West Paradox Creek for irrigation (see p. 180). One diversion above 

station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

3.9

3.7 

3.9 

3.7 

3.7

3.7 

3.7 

3.9 

4.1 

3.9

3.7 

3.5 

3.4 

3.4 

2.5

1.5 

1.5 

1.7 

3.0 

1.5

1.3 

1.1 

1.1 

1.2 

1.2

1.2 

1.2 

1.3 

1.3 

1.3 

1.3

Nov.

1.3

1.2 

1.2 

1.1 

1.0

1.0 

1.0 

*.9 

.9

1.1

1.2 

1.1 

.9 

.9 

.9

.9 

.9 

.9 

.3 

.8

.3 

.8 

.8 

.8 

.3

.3 

.3 

.3 

.8 

.3

Dec.

0.7

.6 

.5 

.4 

.3 

*.4

.4 

.4

.4 

.4 

.4

.5 

.5 

.5 

.5 

.4

.3 

.3 

.3 

.4 

.4 

.4

Jan.

0.5 

.7 

.5 

.4 

.4

.4 

.4

.5 

.5 

.5

.5 

*.6 

.5 

.5 

.5

.4 

.4 

.4 

.4 

.3

.3 

.3 

.4 

.4 

.3

.3 

.2 

.2 

.3 

.3 

.3

Feb.

0.3 

.2 

.2 

.2 

.2

.3 

.3 

.2 

*.2 

.2

.3 

.3 

.3 

.3 

.3

.4 

.4

.4 

.4 

.4

.3 

.4 

.4 

.4 

.4

.4 

.4 

.4

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Ua

lendar year 1949

ter year 1949-50 .......................

Mar>.

0.4 

.4 

.4 

.5 

.5

.5 

.5 

.5 

*.6

.7

.3 

.7 

.3 

.9 

1.0

.9 

1.3 

2.2 

2.2 

2.3

2.3 

2.3 

2.3 

3.2 

3.4

3.0 

2.2 

1.7 

1.6 

2.0 

3.4

Apr.

9.1 

17 

15 

3.8 

3. 3

13 

20 

22 

17 

9.1

9.1 

14 

19 

17 

15

14 

18

17 

14 

13

 14 

15 

14 

12 

10

9.7 

9.4 

9.4 

3.5 

3.2

Secondfoot -days

77.4 

23.0 

15.7

5,403.9

12.6 

8.9 

45.5 

405.1 

586.2 

605.4 

386 

304.3 

148.5

2,623.6

May

3.2 

14 

25 

26 

26

26 

25 

24 

23 

23

23 

22 

22 

22 

22

22 

22 

22 

18 

15

15 

15 

14 

14 

14

14 

14 

14 

14 

14 

14

Maximum

4.1

1.3 

.7

74

.7 

.4 

3.4 

22 

26 

33 

16 

14 

6.2

33

June

14 

15 

21 

32 

33

32 

31 

31 

31 

30

30 

30 

26 

21 

21

22 

23 

23 

23

18

12 

12 

11 

9.7 

9.7

9.7 

9.4 

7.9 

7.9

9.1

July

10 

10 

10 

10 

10

10

11

12 

12

12

12 

11

11 

13 

14

14 

14 

14 

13 

12

12 

11 

11 

11 

14

16 

16 

16 

15 

15 

14

Minimum

1.1 

.8 

.3

.2

.2 

.2 

.4 

8.2 

8.2 

7.9 

10 

6.5 

4.5

.2

Aug.

14 

13 

12 

11 

9.4

8.8 

8.5 

7.3 

6.8 

6.8

6.3 

7.0 

7.3 

6.3 

7.9

9.4 

9.4 

11 

13

13

13 

12 

11

10 

11

12 

12 

12 

9.1 

6.5 

6.5

Mean

2.50 

.93 

, -51

14.8

.41 

.33 

1.47 

13.5 

18.9 

20.2 

12.5 

9.83 

4.95

7.19

Sept.

6.2 

5.5 

5.5 

5.8 

5.5

5.0 

5.0 

5.0 

4.3 

4.3

4.8 

5.2 

6.2 

6.0 

5.2

4.5 

4.5 

4.5 

5.0 

4.5

4.5 

4.5 

4.5 

4.5 

4.5

4.5 

4.5 

4.5 

4.5 

4.5

Runoff in 

acre-feet

154 

56 

31

10,720

25 

18 

90 

804 

1,160 

1,200 

766 

604 

295

5,200

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 11 to Nov. 7, Nov. 12 to Mar. 3 (stage-discharge relation affected by ice part of period); discharge computed on basis of 3 discharge measurements, recorded 

range in stage, weather records, and records for stations on nearby streams.

207364 O - 52 - 12
168 DOLORES RIVER BASIN

West Paradox Creek near Bedrock, Colo.

Location.--Water-stage recorder, lat. 38°19'45", long. 108°52'15", In SE^NEij sec. 17, T. 

4V N., R. 18 W., half a mile upstream from mouth and 2 miles northeast of Bedrock.

Records available. August 1944 to September 1950.

Extremes.--Maximum discharge during year, 52 second-feet Oct. 19; maximum gage height, 

5.05 feet Jan. 12 (ice Jam); minimum, 0.1 second-foot on many days.

1944-50: Maximum discharge not determined, occurred Aug. 27, 1945; maximum gage 

height, 5.92 feet Aug. 8, 1949; no flow at times in 1946, 1947, 1948.

Remarks. Records fair. Most of flow diverted above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6

7 

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.

2.2 

2.1 

2.6 

2.4 

2.6

2.6 

2.7 

4.4 

5.5 

4.5

3.3 

2.8 

2.4 

2.4 

2.4

2.6 

2.9 

4.7 

20 

5.9

2.4 

1.8 

1.9 

1.8 

2.Z

2.6 

2.9 

2.9 

3.6 

3.9 

4.2

Nov.

4.2 

3.6 

4.O 

3.9 

3.6

4.4 

5.7 

7.1 

8.0 

8.3

9.8 

8.0 

8.3 

8.3 

8.3

8.3 

8.3 

8.0 

7.7 

7.7

7.4 

7.1 

6.8 

6.5 

6.3

6.3 

6.3 

5.9 

5.9 

6.1

Dec.

6.3 

6.1 

6.1 

5.7 

5.7

6.1 

6.3 

6.3 

6.5 

7.4

6.3 

5.9 

a5.6 

a6.O 

*b7.4

7.1 

7.4 

8.3 

8.6 

8.3

7.4 

b6.0 

b6.2 

b6.2 

b6.0

b5.8 

b6. 2 

b6. 6 

b6.6 

b6. 8 

6.8

Jan.

7.1 

7.7 

7.1 

b6. 8 

b6. 6

be. 6 

b6.4 

b7.0 

b7.6 

b8.O

b8.6 

*blO 

9.5 

8.6 

8.6

8.3 

8.0 

7.7 

6.8 

6.3

5.5 

4.9 

4.5 

4.0 

3.0

2.4 

b3.5 

bS.O 

6.5 

6.5 

6.5

Feb.

6.5 

6.5 

6.5 

6.5 

6.1

6.8 

15 

18 

*12 

6.8

6.8 

6.8

5.7 

5.5 

5.5

5.5 

6.1 

5.7 

5.7 

5.7

5.7 

4.7 

4.7 

5.3 

5.3

5.5 

9.2 

10

Month

Goto 

Hove

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Vfa

lendar year 194s

ter year 1949-5O .......................

Mar.

9.8 

14 

12 

12 

11

12 

11 

9.5 

9.5 

9.5

8.9 

8.9 

8.3 

8.O 

8.O

7.7 

8.0 

8.0 

7.1 

6.8

6.5 

6.5 

6.5 

5.9

5.5

5.9 

5.5 

4.9 

4.4 

4.0 

4.2

Apr.

4.5 

5.1 

14 

8.3 

4.2

2.6 

6.0 

7.4 

5.1 

2.0

.4

l.O 

1.8 

1.5 

.8

.6 

.5 

.5 

.2 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.2 

.5

Secondfoot-days

111.2 

200.1 

204.0

3,587.9

205.6 

200.1 

249.8 

68.1 

18.2 

9.9 

7.9 

4.8 

8.2

1,287.9

May

0.1 

.1 

.6 

.7 

1.7

1.2 

.9 

.3 

.6 

.5

.5 

.5 

.7 

1.1 

.7

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5 

.5

Maximum

20 

9.8 

8.6

58

10 

18 

14 

14 

1.7 

.7 

1.3 

.3 

.3

20

June

0.5 

.5 

.5 

.5 

.5

.5 

.5 

.6 

.7 

.6

.5 

.4 

.3 

a. 2 

a. 2

.1 

.1 

.2 

.2 

.7

.3 

.3 

.2 

.2 

.1

.1 

.1 

.1 

.1 

.1

Minimum

July

0.1 

.1 

a.l 

a.l 

a.l

a.l

a.l 

a.l 

a.l 

a.l

a.l 

.1 

.1

.1 

.1

.1 

.1 

.1 

.1 

.1

.4 

.6 

.9 

1.3 

.5

.4 

.5 

.4 

.3 

.3 

.3

1.8 

3.6 

5.6

.3

2.4 

4.7 

4.0 

.1 

.1 

.1 

.1 

.1 

.2

.1

Aug.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.1 

.1 

.2

.2 

.2 

.2 

.2 

.2

.1 

 1 

.1 

.1 

.1

.1

.1 

.1 

.1 

.1

.1 

.1 

.1 

.2 

.2 

.3

Mean

3.59 

6.67 

6.58

9.83

6.63 

7.15 

8.06 

2.27 

.59 

.33 

.25 

.15 

.27

3.53

Sept.

0.3 

.3 

.3 

.2 

.3

'.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.2 

.2 

.2 

.2 

.2

.2 

.2 

.3 

.3 

.3

Runoff In 

acre -feet

221 

397 

405

7,110

408 

397 

495 135- 

36 

20 

16 

9.5 

16

2,560

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for stations 

on nearby streams.

b Stage-discharge relation affected by ice.
DOLORES RIVER BASIN 169

Buckeye Reservoir Outlet near Paradox, Colo.

Location. Waters-stage recorder and Parshall flume, lat. 38°26', long. 109°03', in sec. 

11, T. 48 N., R. 20 W., 700 feet downstream from Buckeye Reservoir and 6| miles 

northwest of Paradox.

Records available. October 1945 to September 1950. Records for monthly acre-feet, May 

to September 1945, published in Water-Supply Paper 1039, with record for West Paradox 

Creek near Paradox.

Extreme3. Maximum daily discharge during year, 37 second-feet June 4, 5; minimum not 

determined, but probably no flow at times during winter.

1945-50: Maximum daily discharge, 59 second-feet June 16-27, 1949; probably no 

flow at times during most winters.

Remarks. Records excellent above 5 aecond-feet and good below except those for period of 

no gage-height record, which are poor. Flow is all diverted from Deep and Geyser 

Creeks in Roc Creek Basin and regulated by Buckeye Reservoir (capacity, 3,000 acrefeet) .

Discharge, in.second-feet, water year October 1949 to September 1950

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

Oct.

3.6 

2.8 

2.8 

2.8 

2.8

2.8 

2.8 

2.8 

2.8 

2.8

2.8 

2.8 

2.8 

2.8

1.4

.4 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2 

.2

Nov.

0.2

Dec.

0.1

Jan.

, ,0.1

Feb.

0.1

Month

Octo 

Hove 

Dace

Ca

Janu 

Febr 

Marc 

Aprl 

Nay

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

0.2

Apr.

0.2

.2 

.2 '.2

.2

.2 

.2 

.2 

.2 

.2

2.2 

2.2 

2.2 

2.4 

2.4

2.2 

2.4 

2.5 

2.8 

3.1

3.2 

3.6 

4.0 

4.0 

4.1

4.1 

4.7 

5.5 

5.5 

5.5

Secondfoot-days

44.8 

6.0

3.1

3,992.5

3.1 

2.8 

6.2 

70.6 

662.5 

726 

501 

429.8 

152.0

2,607.9

May

5.5 

26 

26 

26 

26

26 

26 

26 

26 

26

26 

26 

26 

26 

26

26 

25 

26

21 

17

17 

17 

16 

16 

16

16 

16

16 

16 

16 

16

Maximum

3.6

59

5.5 

26 

37 

18 

20 

7.5

37

June

16 

17 

23 

37 

37

36 

36 

36 

36 

36

36 

36 

29 

25 

25

27 

28 

28 

28 

20

16 

16 

15 

13 

13

13 

12 

11

11 

14

July

15 

15 

15 

15 

15

15 

16 

16 

16 

16

16 

15 

15 

17 

18

18 

18 

17 

17 

17

15 

14 

14 

14 

17

18 

18 

18 

17 

17 

17

Minimum

0.2

-

.2 

5.5 

11 

14 

8.0 

4.0

-

Aug.

16 

15 

15 

14 

13

13 

13 

11 

9.5 

9.5

9.5 

9.5 

9.5 

9.3

13

16 

16 

19 

20 

20

20 

18

17 

16 

16

15 

15 

15 

11 

8.0 

8.0

Mean

1.45

.2 

.1

10.9

.1 

.1 

.2 

2.35 

21.4 

24.2 

16.2 

13.9 

5.07

7.14

Sept.

7.3 

6.6 

6.6 

6.6 

5.7

5.2 

5.2 

5.2 

5.2 

5.0

5.0 

6.6 

7.5 

7.3 

5.5

4.2 

4.2 

4.2 

4.2 

4.2

4.1 

4.1 

4.1 

4.1 

4.1

4.0 

4.0 

4.0 

4.0 

4.0

Runoff in 

acre -feet

89 

12 

6.1

7,920

6.1 

5.6 

12 

140 

1,310 

1,440 

994 

852 

301

5,170

Note. No gage-height record Oct. 16 to Apr. 10; discharge computed on basis of estimated leakage 

through reservoir gates when closed.
170 DOLORES RIVER BASIN

San Mlguel River near Placerville, Colo.

Location. Water-stage recorder, lat. 38'cb2', long. 108°07', in SE£ sec. 30, T. 44 N., R. 

 11 W., 100 feet downstream from Specie Creek, 3 miles northwest of Placerville.

Drainage area. 308 square miles.

Records available. January to September 1909 (monthly discharge) at Saltado Ranch, 3 miles 

downstream, September 1910 to November 1912 at site 2| miles upstream (excludes flow of 

Specie Creek), and March 1942 to September 1950 in reports of Geological Survey. September 1910 to November 1912, April 1930 to September 1934 above Specie Creek (no winter records), and March 1942 to September 1950 in reports of State engineer.

Average discharge. 10 years (1910-12, 1942-50), 266 second-feet.

Extremes. Maximum discharge during year, 864 second-feet June 17 (gage height, 2.53 feet); 

minimum daily, 54 second-feet Dec. 13.

1909-12, 1930-34, 1942-50: Maximum discharge, 10,000 second-feet Sept. 5, 1909 

(failure of Trout and Middle Reservoir Dams); minimum daily, 48 second-feet Jan. 5, 

1949, but may have been less during period of ice effect.

Remarks. Records good except those for period of ice effect, which are fair. Diversions 

aEove station for irrigation. Slight regulation by Lake Hope and Trout Lake of Western 

Colorado Power Co. (combined capacity, 5,040 acre-feet).

Rating table, water year 1949-50, except period of ice effect

(gage height, In feet, and discharge, in second-feet) 

(Shifting-control method used Jan. 23 to Apr. 20, July 13-31)

0.3 54 1.1 188 

.5 67 1.4 285 

.6 78 1.8 445 

.7 92 2.2 660 

.8 110 2.6 910

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

91 

89 

85 

84 

84

82 

82 

82 

99 

89

89 

91 

92 

92 

89

88 

92 

103 

106 

96

89 

88 

88 

88 

88

88 

88 

88 

86 

82 

79

Nov.

82 

82 

81 

81 

82

79 

82 

84 

85 

85

86 

76 

78 

78 

82

79 

81 

81 

79 

79

77 

78 

78 

79 

77

79 

78 

78 

79 

78

Dec.

77 

72 

72 

68 

67

71 

81 

79 

77 

77

67 

58 

54 

62 

 62

85 

78 

75 

75 

76

75 

69 

69 

76 

69

62 

60 

70 

72 

74 

74

Jan.

70 

64 

60 

56 

60

58 

58 

60 

66 

64

64 

66 

 64 

62 

62

62 

64 

68 

66 

64

62 

62 

66 

67 

62

66 

62 

66 

67 

63 

63

Feb.

60 

59 

62 

65 

64

62 

63 

*62 

60 

60

61 

57 

56 

59 

58

58 

58 

58 

57 

59

59 

56 

57 

57 

58

58 

60

61

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 .......................

Mar.

57 

60 

60 

60 

62

64 

61 

60 

62 

62

62 

61 

56 

59 

59

57 

61 

63 

60 

63

60

62 

64 

68 

69

66 

62 

60 

59 

62 

64

Apr.

76 

108 

142 

103 

134

203 

224 

264 

206 

144

142 

168 

197 

203 

203

185 

197 

206 

206 

221

264 

299

316 

328 

292

306 

316 

302 

299

257

Secondfoot-days

2,757 

2,403 

2,203

100,923

1,964 

1,664 

1,905 

6,511 

9,556 

17,870 

9,349 

3,343 

2,405

61,930

May

260 

274 

292 

306 

278

257 

240 

209 

185 

180

194 

215 

209 

203

237

234 

271 

282 

285 

288

344 

360 

400 

400 

414

376 

414 

440 

409 

470 

630

Maximum

106 

86 

85

2,080

70 

65 

69 

328 

630 

738 

470 

157 

94

738

June

648 

630 

654 

505 

432

500 

550 

500 

520 

600

690 

738 

714 

708 

702

732 

738 

720 

654 

584

545 

606 

485 

500 

562

562 

556 

535 

505 

495

July

470 

414 

380 

376 

356

332 

368 

380 

388 

388

409 

360 

328 

302 

396

344 

302 

328 

299 

264

244 

228 

212 

206 

200

191 

185 

188 

182 

166 

163

Aug.

157 

152 

150 

144 

139

132 

129 

127 

120 

117

124 

124 

103 

96 

89

88 

101 

99 

97 

89

88 

91 

91 

92 

89

94 

94 

85 

84 

81 

77

Minimum Mean

79 88.9 

76 80.1 

54 71.1

48 277

56 63.4 

56 59.4 

56 61.5 

76 217 

180 308 

432 596 

163 302 

77 108 

68 80.2

54 170

Sept.

79 

76 

69 

68 

70

78 

84 

94 

91 

84

82 

79 

76 

75 

74

72 

71 

75 

76 

89

81 

84 

85 

86 

91

89 

85 

82 

81 

79

Runoff in 

acre-feet

5,470 

4,770 

4,370

200,200

3,900 

3,300 

3,780 

12,910 

18,950 

35,440 

18,540 

6,630 

4,770

122,800

Peak discharge (base, 900 see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 28 to Jan. 22.
DOLORES RIVER BASIN 171

San Miguel River at Naturita, Colo.

Location.--Water-stage recorder, lat. 38°13", long. 108°34", in SE^SW^ sec. 19, T. 46 N. 

K. ib W., at bridge on State Highway 97 in Naturita and 1.2 miles downstream from 

Naturita Creek. Datum of gage is 5,392.85 feet above mean sea level, datum of 1929.

Drainage area.--1,080 square miles.

Records available.--October 1917 to September 1927 and October 1940 to September 1950 in 

reports of Geological Survey. April 1918 to September 1929 and October 1940 to September 1950 in reports of State engineer. (April to September 1940 in files of Bureau 

of Reclamation.)

Average discharge. 22 years (1917-29, 1940-50), 404 second-feet.

Extremes.--Maximum discharge during year, 1,140 second-feet Apr. 9 (gage height, 3.65 

feet); minimum daily, 12 second-feet Sept. 5.

1917-29, 1940-50: Maximum discharge, 7,100 second-feet Apr. 15, 1942 (gage height, 

9.80 feet), from rating curve extended above 3,800 second-feet; minimum daily, that of 

Sept. 5, 1950.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

79 

62 

55 

49 

42

40 

38 

38 

60 

96

110 

110 

112 

116 

112

108 

112 

122 

143 

145

122

116 

112 

112 

110

110 

112 

110 

110 

106 

102

Nov.

100 

102 

102 

102 

102

100 

100 

102 

*106 

106

112 

106 

96 

96 

98

98 

96 

79 

69 

60

60 

55 

59 

92 

89

87 

87 

91 

91 

87

Dec.

83 

83 

70 

70 

65

63 

89 

89 

96 

96

89 

67 

50 

47 

*58

70 

90 

105 

100 

94

86 

80 

86 

92 

88

88 

90 

92 

96

105 

100

Jan.

110 

115 

90 

80 

82

78 

82 

90 

100 

94

100 

*110 

110 

105 

100

105 

105 

105 

110 

115

120

125 

130 

130 

120

100 

105 

110 

110 

110 

100

Feb.

96 

90 

88 

92 

100

115 

130 

*120 

115 

110

115 

115 

105 

100 

98

105 

110 

102 

102 

108

116 

96 

100 

100 

96

94 

94

108

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

106 

136 

129 

124 

124

134 

129 

114 

120

*114

110 

120 98' 

98

114

106 

108 

116 

116 

116

118 

118 

120 

124 

143

147 

127 

114 

108 

110 

116

Apr.

127 

176 

295 

286 

256

322 

514 

700 

841 

555

381 

403 

580 

705 

585

459 

493 

575 

516 

511

595 

675 

695 

695 

575

550 

560 

498 

484 

435

Secondfoot-days

2,971 

2,730 

2,577

130,053

3,246 

2,920 

3,677 

15,042 

11,429 

16,944 

7,684 

1,945 

1,190

72,355

Hay

378 

378 

392 

423 

415

381 

336 

289 

259 

230

220 

238 

250 

244 

292

378 

384 

415 

381 

353

384 

403 

423 

455 

451

415 

411 

451 

415 

415 

570

Maximum

145 

112 

105

2,990

130 

130 

147 

841 

570 

720 

423 

117 

109

841

June

670 

650 

705 

580 

455

443 

545 

506 

493 

550

640 

710 

710 

705 

685

690 

720 

710 

640 

540

502 

460 

520 

400

415

480 

480 

470 

450 

420

July

423 

367 

325 

316 

289

271 

250 

290 

310 

320

330 

350 

301 

271 

240

340 

271 

271 

268

241

215 

195 

175 

152

145

135 

125 

138 

158 

111 

91

Minimum

38 

55 

47

37

78 

88 

98 

127 

220 

400 

91 

27 

12

12

Aug.

90 

86 

84 

84 

82

84 

105 

117 

113 

101

100 

95 

85 

60 

46

38 

38 

50 

48 

46

38 

36 

38 

38 

40

35 

40 

40 

31 

30 

27

Mean

95.8 

91.0 

83.1

356

105 

104 

119 

501 

369 

565 

248 

62.7 

39.7

198

Sept.

21 

23 

20 

13 

12

14 

22 

28 

38 

34

28 

24 

23 

23 

23

23 

23 

24 

85

109

62 

55 

55 

58

59

61 

62 

62 

59 

47

Runoff In 

acre-feet

5,890 

5,410 

5,110

258,000

6,440 

5,790 

7,290 

29,840 

22,670 

33,610 

15,240 

3,860 

2,360

143,500

Peak discharge (base, 1,760 sec. -ft.). No peak above base.

* Winter discharge measurement made on this day.

Note. No gage-height record Dec. 13, 14, Jan. 3-11 (stage-discharge relation affected by Ice), 

June 22-30, July 7-12, 15, 16, Aug. 11 to Sept. 10; discharge computed on basis of discharge measurement Sept. 7, weather records, and records for station near Placervllle. Stage-discharge relation affected by Ice Dec. 15 to Jan. 2, Jan. 12 to Feb. 16.
172 DOLORES RIVER BASIN

Pall Creek near Pall Creek, Colo.

Location. Water-stage recorder, lat. 37°58', long. 108°01', in sec. 24, T. 43 N., R- 11 

W . , 2 . 7 miles upstream from mouth and 2.8 miles south of Pall Creek. Datum of gage is 

7,928.79 feet above mean sea level (Bureau of Reclamation bench mark).

Drainage area. 33.5 square miles.

Records available. October 1942 to September 1950. 

or Bureau or Keclamation.)

(July 1941 to September 1942 in files

Extremes.--Maximum discharge during year, 185 second-feet Mar, 29 (gage height, 3.08 feet); 

minimum observed, 3.9 second-feet Peb. 8, (discharge measurement) but may have been less 

during period of no gage-height record.

1942-50: Maximum discharge. 476 second-feet May 14, 1944 (gage height, 4.36 feet, 

present datum, from floodmarks), from rating curve extended above 150 second-feet; 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. No diversion or regulation above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27

29 

30 

31

Oct.

5.8 

5.1 

5.5 

5.1 

5.1

5.5 

5.1 

4.7 

5.5 

5.8

6.2 

6.2 

6.2 

6.2 

5.8

6.2 

8.1 

10 

9.8 

6.2

6.7 

8.6 

7.6 

7.2 

6.2

6.7 

6.7 

5.8 

5.8 

6.2 

5.5

Nov.

5.5 

5.8 

5.5 

5.5 

5.8

5.5 

5.8 

5.5 

*5.8 

5.5

5.5 

8.6 

8.6 

7.6 

5.5

5.8 

5.8 

5.8 

5.8

5.1

6.2 

5.8 

6.2 

4.0 

4.4

5.1 

5.5 

4.7 

5.5 

4.5

Dec.

. 4.5 

(*)

Jan.

(*') 

. 4.2

Feb.

4.5

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 194£

ter year 1949-50 .......................

Peak discharge (base, 125 sec. -ft.). Mar

Mar.

4.7 

4.5 

4.7 

5.0 

5.2

5.0 

4.6 

4.7 

5.0 

5.0

5.0 

4.8 

4.7 

4.8 

4.8

*4.7 

6.2 

4.7 

5.8 

4.0

5.5 

4.0 

4.7 

5.5

5.1

4.7 

5.5 

14 

14 

4.0 

4.0

Apr.

6.2 

9.1 

12 

11 

12

16 

21 

26 

18 

12

12 

15 

18 

19 

18

16 

17 

21 

23 

28

33 

41 

46 

45 

42

42 

44 

42 

40 

33

Secondfoot-days

197.1 

172.2 

139.5

8,823.6

130.2 

126.0 

168.9 

738.3 

1,223 

2,141 

912 

299.8 

223.3

6,471.3

29 (3 p.m.)

May

35 

38 

42 

43 

35

31 

29 

26 

26 

26

30 

34 

31 

30 

35

32 

35 

35 

38 

38

43 

44 

46 

48 

48

48 

49 

50 

48 

57 

73

Maximum

10 

8.6

197

14 

46 

73 

90 

46 

14 

14

90

June

72 

73 

82 

65 

58

72 

80 

70

67 

75

85 

90 

87 

85 

85

85 

87 

81 

74 

68

66 

76 

65 

63 

62

58 

57 

54 

51 

48

July

44 

39 

35 

34 

31

30 

38 

36 

40 

46

43 

34 

32 

31 

39

32 

29 

29 

29 

26

24 

23 

21 

20 

20

19 

18 

19 

19 

17 

15

Minimum

4.7 

4.0

-

4.0 

6.2 

26 

48 

15 

6.7 

5.1

_

Aug.

14 

14 

13 

12 

12

12 

12 

11 

11 

9.6

11 

11 

10 

9.1 

8.6

8.6 

8.1 

7.6 

8.1

7.6

7.2 

7. '2 

6.7 

7.2 

9.6

12 

10 

8.6 

7.6 

6.7 

6.7

Mean

6.36 

5.74 

4.5

24.2

4.2 

4.5 

5.45 

24.6 

39.5 

71.4 

29.4 

9.67 

7.44

17.7

Sept.

6.7 

6.2 

6.2 

6.2 

6.7

7.6 

9.6 

14 

12 

9.1

9.1 

7.6 

7.2 

6.2 

5.5

5.1 

5.1 

5.8 

6.2 

8.6

6.7 

7.6 

8.6 

9.1 

7.6

6.2 

7.2 

6.7 

6.7 

6.2

Runoff in 

acre-feet

391 

342 

277

17,510

258 

250 

335 

1,460 

2,430 

4,250 

1,810 

595 

443

12,840

185 sec. -ft.

Note. Stage-discharge relation aff 

Mar. 15 (stage-discharge relation aff=^«=^ .,, .n,= 

of 3 discharge measurements , veather records, an

i on this day.

'ected by ice Nov. 30 to Dec. 4. No gage-height record Dec. 5 to 

'ected by"Ice during most of period)} discharge computed on basis 

1 records, and records for stations on nearby streams.
DOLORES RIVER BASIN 

Beaver Creek near Norwood, Colo.

173

Location.--Water-stage recorder, lat. 37°56 r , long. 108°10', in sec. 28, T. 43 N., R. 12 

w., 500 feet upstream from Boat Creek and 16 miles southeast of Norwood. Datum of gage 

is 8,008.81 feet above mean sea level (Bureau of Reclamation bench mark).

Drainage area. 35.2 square miles.

Records available. October 1942 to September 1950 (no winter records'1943, 1945).

(October, November 1940, April 1941 to September 1942 in files of Bureau of Reclamation.)

Extremes.--Maximum discharge during year, 178 second-feet Apr. 23 (gage height, 3.05 feet), 

from rating curve extended above 50 second-feet; no flow Aug. 23, Sept. 5-7.

1942-50: Maximum discharge, 615 second feet June 18, 1949 (gage height, 5.00 feet), 

from rating curve extended above 370 second-feet; no flow Sept. 9-17, 1946, Aug. 23, 

Sept. 5-7, 1950.

Remarks. Records good below 75 second-feet and fair above except those for periods of ice 

errect or no gage-height record, which are poor. One large diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

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

Oct.

4.1 

3.6 

3.5 

3.5 

3.6

3.2 

3.5 

4.1 

5.1 

5.4

6.1 

6.4 

5.8 

6.8 

6.1

5.9 

6.8

11 

10 

6.1

7.1 

6.8 

7.5 

7.1 

6.4

6.8 

6.8 

6.4 

6.8 

7.5 

5.9

Nov.

6.1 

5.9

6.1 

6.1 

6.1

6.1 

*5.6 

5.6 

5.6 

5.6

5.6 

5.6 

7.1 

7.1 

6.8

6.1 

6.4 

5.6 

5.6 

5.9

6.1 

6.8 

7.1 

6.1 

5.6

5.6 

5.9 

5.9 

5.6

6.1

Dec.

6.1 

6.8 

7.1 

b6.6 

b6.0

b5.8 

b6.O 

t6. 6 

b7.0

7.1

b5.8 

b5.0 

b4.8 

b4.8 

b5.2

b5.8 

6.2 

6.6 

6.6 

6.4

6.4 

6.6 

6.8 

7.0 

7.0

6.8 

6.4 

6.2 

6.4 

6.6 

6.8

Jan.

. 6.5

Month

Octo 

Hove 

Dece

Ca

4anu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

Feb.

6.O

lendar year 1949

ter year 1949-5O ...............

Mar.

6.5

*7.8 

7.8 

6.4

Apr.

7.S 

11 

15 

15 

17

22 

33 

43 

33 

24

23 

28 

34 

39 

32

28 

31 

41 

48 

58

76 

91 

102 

85 

69

64 

54 

46 

41 

32

Secondfoot -days

186.7 

181.2 

195.3

7,362.6

201.5 

168.0 

204.0 

1,242.8 

444.5 

202.3 

74.5 

8.3 

10.7

3,119.8

May

34 

35 

33 

36 

29

28 

21 

15 

14 

12

11 

11 

1O 

9.6 

9.6

10 

9.6 

10 

9.3 

8.6

a. 6

8.6 

8.6 

8.2 

8.2

7.8 

7.5 

7.8 

7.8 

7.5 

8.2

Maximum

11 

7.1 

7.1

37O

102 

36 

13 

" 4.3 

.9 

1.1

102

June

8.2 

8.6 

13 

9.6 

8.2

7.8 

9.3 

8.9 

7.5 

6.8

&.8 

7.1 

6.8 

6.4

6.1

5.9 

5.9 

5.6 

5.4 

5.9

6.0 

6.2 

5.8 

5.6 

5.4

1 5.2 

5.0 

4.8 

4.5 

4.0

July

3.8 

3.4 

3.2 

3.1 

2.9

2.7 

3.2 

3.0 

3.2 

3.7

3.2. 

2.9 

2.5 

3.0 

4.3

2.7 

2.1 

2.2 

3.3 

3.2

1.9 

1.5 

1.3 

1.1 

1.5

1.6 

1.1 

l.O 

.8 

.6 

.5

Minimum

3.2 

5.4 

4.8

.5

7.8 

7.5 

4.0 

.5 

0 

O

O

Aug.

O.4 

.4 

.3 

.3 

.2

.2 

.2 

.2 

.1

.1

.1 

.2 

.2 

.2 

.2

.1 

.3 

.4

.2

.1

.1 

.1 

0 

.1 

.9

.9 

.5 

.4 

 5 

.2 

.2

Mean

6.02 

6.04 

6.30

20. 2

6.5 

6.O 

6.58 

41.4 

14:3 

6.74 

2.40 

.27 

.36

8.55

Sept.

0.1 

.1

.1 

.1 

O

O 

O

.1 

.1

.2

.3 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.5

.6 

.5 

.7 

.8 

1.1

1.0 

.8 

.7 

.7 

.6

Runoff In 

acre-feet

370 

359 

387

14,610

400 

333 

405 

2,470 

882 

401 

148 

16 

21

6,190

Peak discharge (base. 2OO sec .-ft.). Mb peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Hote. No gage-height record Dec. 17 to Mar. 28 (stage-discharge relation affected by Ice most of 

period), June 21 to July 12; discharge computed on basis of weather records and records for stations 

on nearby streams.
174 DOLORES RIVER BASIN

Horsefly Creek near Sams, Colo.

Location.--Water-stage recorder, lat. 38°12', long. 108°03', in NW£ sec. 35, T. 46 N., R. 

11 w., at boundary of Uncompahgre National Forest and 8 miles northwest of Sams.

Drainage area. 2S.3 square miles.

Records available. May 1942 to September 1950 (no winter records 1942-45).

Extremes.--Maximum discharge during year, 278 second-feet Apr. 13 (gage height, 3.69 feet); 

no now on many days.

1942-50: Maximum discharge, 1,030 second-feet May 12, 1944 (gage height, 5.43 feet), 

from rating curve extended above 500 second-feet; no flow at times each year.

Remarks.--Records fair above 5 second-feet and poor below. A few small diversions above 

station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

0 

O 

0 

0

o

o 

o

0 

0 

0

o

.4

.3 

.2 

.1

.2 

.4

.6 

.8 

.7

.7 

1.2 

1.1 

1.0 

.8

Nov.

0.6 

.6 

.6 

.6 

.5

.5 

.3 

.3 

.4 

.5

.6 

.5 

.6 

.5 

.5

.4 

.4 

.4 

.4

:4

.3 

.3 

.3 

.3 

.3

.2 

.2 

.2

.r .1

Dec.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

O 

0 

0 

0

0 

0 

0

o

0

0 

0 

0 

0 

0

0 

0 

0 

0

0

o

Jan. Feb.

0 

0 

0

o

0

o 

o

0

o

0

0 

0 

0

o

0

.1

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

1.. .....................................

ter year 1949-50 .......................

Mar.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.3

.3 

.3 

.3 

.3 

.4

*.4 

.4 

.5 

.5 

.5

.6 

.6 

.7 

.8 

.8

.8 

.8 

.8 

.7 

.7 

1.0

Apr.

1.3 

3.6 

3.6 

4.0 

5.0

8.1 

36 

82 

61 

34

44

68 

114 

102 

63

58 

77 

71 

59 

62

65 

60 

54 

46 

31

28 

27 

22 

24 

18

Secondfoot-days

12.7 

11.9 

1.1

3,086.6

0 

1.3 

14.3 

1,332.1 

251.7 

13.5 

O 

O 

0

1,638.6

May

14 

14 

14 

14 

15

15 

12 

9.5 

8.8 

8.6

8.4 

8.4 

8.1 

7.9 

7.9

7.9 

9.0 

8.1 

9.5 

8.4

6.1 

5.3 

5.0 

4.7 

4.3

4.2 

3.3 

2.8 

2.9 

2.3 

2.3

Maximum

1.2 

.6

.1

221

0

1.0 

114 

15 

2.4 

0 

0 

0

114

June

2.0

1.7 

2.4 

1.6 

1.1

.8 

.7 

.5 

.6 

.4

.3

.2

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

0

0 

0 

0 

0 

0

July

Minimum

O 

.1 

O

0

0

o

.2 

1.8 

2.3 

0 

0 

0 

0

o

Aug.

Mean

0.41 

.40 

.04

8.46

0 

.05 

.46 

44.4 

8.12 

.45 

0 

0 

0

4.49

Sept.

Runoff In 

acre-feet

25 

24 

2.2

6,120

0 

2.6 

28 

2,640 

499 

27 

0 

O 

0

3,250

Peak discharge (base. 280 see.-ft.). No peak above base.

» Winter discharge measurement made on this day.

Note. No gage-height record Oct. 8-10, Oct. 23 to Nov. 2, Dec. 12 to Mar. 15 (stage-discharge 

relation affected by Ice during part of period); discharge computed on basis of observation of no flow 

on Oct. 10, weather records, recorded range In stage, and records for stations on nearby streams.
DOLORES RIVER BASIN 175

Cottonwood Creek near Nucla, Colo.

Location. Water-stage recorder, lat. 38°16', long. 108°22', in sec. 1, T. 46 N., R. 14 

W., naif a mils upstream from North Pork, 10 miles east of Nucla.

Drainage area.--43 square miles.

Re cords available.--May 1942 to September 1950 (no winter records 1942, 1943, 1945). 

(November 1941 to April 1942 in files of Bureau of Reclamation.)

Extremes. Maximum discharge during year, 126 second-feet Apr. 7 (gage height, 3.05 feet); 

no now during most of winter.

1942-50: Maximum discharge, 321 second-feet Apr. 16, 1948, from rating curve extended above 200 second-feet; maximum gage height, 4.48 feet May 1, 1945; no flow at 

times.

Remarks. Records fair. A few small diversions above station for irrigation.

Rating tables, water year 1949-50 (gage height, In feet,

and discharge, In second-feet) 

(Shifting-control method used Oct. 19 to Nov. 3O)

Oct. 1 to Feb. 28

0.9 

1.0 

1.2

0.9

1.0

1.1

1.2

.05 

.12 

.4

Mar. 1 to Sept. 3O

1.3 1.1

1.4 2.3

.1.5 4.0

1.6 6.2

2.1 27

2.2 33

2.3 41

2.6 72

uischarge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.1 

.1

,1 

.2 

.2 

.2

.1

.1 

.1 

 .1 

.1

.1

.1 

.1 

.1 

.1 

.1 

.1

Nov.

0.1 

.1 

.1 

.1 

.1

.1 

0 

0 

*0 

O

.1 

0 

O 

0 

0

0 

0 

0 

0 

0

0

0 

0 

0 

0

O 

0 

0 

O 

O

Dec. Jan. Feb.

(*)

Month

Octo 

Nove 

Deoe

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

(*)

Apr.

O.6 

12 

17 

13 

15

24 

35 

41 

32 

20

19 

29 

39 

39 

29

26 

42 

65 

51 

54

63 

61 

59 

47 

36

34 

31 

26 

26 

22

Secondfoot-days

4.7 

.7 

0

2,341.5

0 

0 

0 

1,007.6 

4O5.7 

81.6 

12.3 

6.3 

3.1

1,522.0

May

20 

20 

21 

20 

18

17

16 

15 

13 

12

1O

10 

11 

11 

12

12 

12 

12 

13 

13

14 

15 

14 

14 

12

10 

9.2 

8.9 

7.0 

7.0 

6.6

Maximum

0.2 

.1 

O

11-9

0 

0 

O 

65 

21 

7.3 

.6 

.3 

.2

65

June

7.0 

7.0 

7.3 

6.2 

5.5

5.3 

4.4 

3.5 

3.2 

3.0

2,2 

2.5 

2.2 

2.5 

2.1

1.7 

1.6 

1.5 

1.6 

1.6

1.3 

1.2 

1.3 

1.1 

.9

.9 

.8 

.8 

.7 

.7

July

0.6 

.6 

.6 

.6 

.5

.5 

.6 

.5 

.4

.4

.4 

.4

.4 

.4 

.4

.4 

.4 

.4

.4 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 '.2 

.2

Minimum

0.1 

0 

0

0

0 

0 

O 

.6 

6.6 

.7 

.2 

.1 

.1

0

Aug.

0.2 

.2 

.2 

.2 

.3

.3 

.3 

.2 

.2 

.2

.3 

.3 

.2 

.2 

.2

.2 

.Z 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.1 

.1 

.1 

.1

Mean

0.15 

.02 

O

6.42

O 

O 

0 

33.6 

13.1 

2.72 

.40 

.20 

.10

4.17

Sept.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.2 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

Runoff in 

acre-feet

9.3 

1.4 

0

4,650

0 

0 

0 

2,000 

805 

162 

24 

12 

6.1

3,020

Peak discharge (base. 40 sec.-ft.). Apr. 7 (6 p.m.) 126 see.-ft.; Apr. 13 (8 p.m.) 70 sec.-ft.; 

Apr. 18 (6 p.m.) ^25 sec.-ft.

* Winter discharge measurement or observation of no flow made on this day. 

Note. No gage-height record Dec. 1 to Mar. 10; probably no flow during period.
176 DOLORES RIVER BASIN

Naturita Creek near Norwood, Colo.

Location. Water-stage recorder, lat. 37°58', 'long. 108°18', In SE£ sec. 20, T. 43 N., R. 

13 w,, 500 feet downstream from East Pork and 11 miles south of Norwood. Datum of gage 

Is 7,601.12 feet above mean sea level (Bureau of Reclamation bench mark).

.Drainage area. 27.7 square miles.

Records available. October T941 to September 1950 (no winter records 1941-45). (October 

to December 1940 and May to September 1941 In files of Bureau of Reclamation.)

!. Maximum discharge during year, 91 second-feet July 17 (gage height, 1.88 feet);

fox. on many days In August and September.

1941-50: Maximum discharge, 943 second-feet July 24, 1945 (gage height, 5.19 feet), 

from rating curve extended above 200 second-feet on basis of slope-area determination 

at gage height 4.80 feet; no flow at times in September 1945, September 1948, August 

and September 1950.

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

which are poor. Small diversions above station for irrigation.

Rating table, water year 1949-50, except periods of Ice effect

(gage height, In feet, and discharge, In second-feet) 

(shifting-control method used June 6 to July 14, Sept. 1-30)

0.0 0 0.4 2.0 0.8 10 

.1 .1 .5 3.4 .9 14 

.2 .4 .6 5.0 1.0 18 

.3 1.1 .7 7.0 1.1 23

Discharge, In second-feet, water year October 1949 to September 1950

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.

0.7 

.6 

.6 

.6 

.5

.5 

.3 

.4 

1.4 

1.5

1.6 

1.6 

1.3 

1.2 

1.1

1.2 

1.5 

3.6 

4.0 

3.4

2.4 

2.4 

2.3 

2.0 

1.8

1.6 

1.6 

1.5 

1.5 

1.5 

1.3

Nov.

1.3 

1.2 

1.2 

1.2 

1.2

1.2 

*1.2 

1.3 

1.4 

1.5

1.7 

2.3 

2.3 

2.3 

2.1

1.8 

1.6 

1.5 

1.6 

1.5

i.e

1.6 

1.4 

1.5 

1.5

1.6 

1.3 

1.4 

1.4

1.3

Dec.

1.6 

1.5 

1.5 

1.4 

1.0

1.3 

1.8 

1.4 

1.5 

bl.5

1.5 

1.3 

1.2 

1.3 

1.3

1.4 

1.5 

1.5 

1.5 

1.5

1.5 

1.5 

1.6 

1.5

1.5

1.4 

1.4 

1.4 

1.5 

1.5 

1.6

Jan.

1.5

Feb.

2.0

Month

Oeto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu

Sept

Wa

Lendar year 1949

ter year 1949-50 .......................

Mar.

2.2 

2.5 

2.4 

2.3 

2.3

2.5 

2.6 

2.4 

2.6 

2.5

2.7 

2.7 

2.6 

2.7 

*b3.0

b3.6 

b5.0

bS.'e 

b6.4

b5.8 

b7.0 

b6.2 

b7.4 

8.2

9.4

7.9 

6.6 

7.3 

6.8 

11

Apr.

16 

18 

15 

12 

12

15 

14 

21 

16 

11

8.8 

8.8 

8.2 

7.9

9.4 

9.4 

8.5 

*7.6 

7.9

8.5 

11 

11 

12 

9.4

8.8 

10 

9.1 

12 

8.8

fo'ot-Sa-ys

47.5 

46.0 

44.9

2,221.9

46.5 

56.0 

146.9 

336.8 

148.9 

58.1 

52.9 

1.4 

1.0

986.9

May

7.3 

6.6 

6.2 

10 

12

8.8 

6.0 

5.2 

4.8 

4.4

3.9 

4.4

4.5

4.8 

4.2 

3.9 

4.0

3.7

3.3 

3.4 

3.0 

3.1 

3.6

3.7 

3.1 

3.1 

3.4 

3.0 

3.1

Maximu 

4.0 

2.3 

1.8

56

11 

21 

12 

4.5 

5.5 

.2 

.2

21

June

3.0 

3.1 

4.5 

4.2 

4.0

2.6 

2.7 

2.4 

2.1 

2.0

1.6 

1.6

1.4

1.4 

1.2 

1.3 

1.3 

1.4

1.4 

1.8 

1.6 

1.4 

1.2

1.2 

1.2 

1.2 

1.0 

1.0

July

0.8 

.9 

.8 

.7 

.7

.8 

1.3 

1.9 

2.3 

2.0

1.6 

1.2

3.9

2.6 

5.5 

3.9 

2.4 

2.0

1.6 

1.5 

1.4 

1.2 

1.2

.9 

.8 

.8 

.5 

.3 

.2

Aug.

0.1 

.1 

.1 

.1 

0

0

.1

0 

0 

0

0

.1

.2

.1

.1 

 .1 

.1 

0 

0

0 

0 

0

o

0 

0

.1

0

0 

0 

0

Sept.

0 

0 

0 

0 

O

0 

0

.1

0 

0

0 

0 

0 

0 

0

0 

0 

0 

.2

.1

0

.1 

.1 

.1

.2

.1 

0 

0 

0 

0

Minimum Mean acre f et

0.3 1.53 94 

1.2 1.53 91 

1.0 1.45 89

6.09 4,410

1.5 92 

2.0 111 

2.2 4.74 291 

7.6 11.2 668 

3.0 4.80 295 

1.0 1.94 115 

.2 1.71 105 

0 .05 2.8 

0 .03 2.0

0 2.70 1.96O

Peak discharge (base, 210 sec. -ft.). No peak above base.

n.Liii/ci u.i-auijai-&e lucaoui euusiii* uiaue uii UJI.L» uay.

t Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 11 to Mar. 14 (stage-discharge relation affected by ice during 

ost of period); discharge computed on basis of weather records and records for stations on nearby

 hT*«ama _
DOLORES RIVER BASIN 177

Tabeguaehe Creek near .Huela, Colo.

Location. Water-stage recorder and concrete control, lat. 38°22', long. 108''20', in SE|

 secT"31, T. 48 N., R. 13 W., 1 mile downstream from head gate of Glencoe ditch and 13 

miles northeast of Nucla.

Drainage area. 20.7 square miles.

Records available. April 1946 to September 1950.

Extremes. Maximum discharge during year, 220 second-feet Apr. 21 (gage height, 3.62 feet);

110 1946-50^Maximum discharge, 303 second-feet May 15, 1949 (gage height, 3.83 feet), 

from rating curve extended above 170 second-feet; no flow at times during most years.

Remarks. Records good except those below 1 second-foot and those for periods of no gage-

 freight record, which are poor. Diversion above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

0.3 

.2 

.2

.1 

.1

.2 

.1 

.1 

.5 

.7

.6 

.7 

.6 

.5 

.5

.5 

.5 

1.4 

1.7 

1.4

1.0 

.7 

.8 

.8 

.7

.7 

.6 

.6 

.6 

.5 

.4

Nov.

0.5 

.4 

.4 

.5 

.4

.4 

.4 

.4 

-.4 

.6

1.0 

1.4 

.9 

.8

.7

.7 

.7 

.7 

.7 

.6

.7 

.6 

.7 

.7 

.7

.6 

.6 

.6 

 u6 

.6

Dec.

0.6 

.7 

1.0 

.7

a. 6

Jan.

aO.6

Feb.

aO.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

Mav

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

Mar.

al.7

Apr.

alO 

a!6 

a!8 

20 

22

34 

64 

82 

6» 

35

36 

52 

67 

76 

56

47 

67 

100 

106 

120

148 

152 

155 

142 

122

126 

126 

108 

96 

79

Secondfoot-days

18.3 

19.0 

19.2

5,603.3

18.6 

22.4 

52.7 

2,342 

1,961 

326.7 

6.2 

0 

1.0

4,787.1

Hay

73 

78 

88 

85 

72

60 

51 

43 

38 

38

42 

53 

59 

63

72

76 

80 

82 

88 

91

92 

85 

73 

76 

63

48 

42 

40 

36 

35 

39

Maximum

1.7 

1.4

137

155 

92 

39 

.8 

0 

.7

155

June

39 

38 

32 

26 

22

20 

19 

16 

14 

12

10 

10 

8.8 

7.5 

6.8

6.1 

5.5 

4.9 

4.4 

3.9

3.6 

3.6 

3.3 

2.7 

2.5

2.0 

1.0 

.8 

.7 

.6

Minimum

July

0.6 

.5 

.4 

.3 

.3

.3 

.3 

.4 

.4 

.5

.8 

.6 

.4 

.3 

.1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

0.1 

.4

0

10 

35 

.6 

0 

0 

0

0

Aug.

Mean

0.59 

.63 

.62

15.4

.6 

.8 1.7' 

78.1 

63.3 

10.9 

.20 

0 

.03

13.1

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

.7

.2 

.1

0 

0 

0

0 

0 

0 

0 

0

Runoff In 

acre-feet

36 

38 

38

11,110

37 

44 

105 

4,650 

3,890 

648 

12 

0 

2.0

9,500

(base, 110 sec.-ft.). Apr. 21 (6 p.m.) 220 sec.-ft.; May 3 (8 p.m.) 148 sec.-ft. 

;ht record; discharge computed on basis of discharge measurement Mar. 28, weather

Peak dlsehari 

a Ho gage-he: 

records, and records for stations on nearby streams.
178 DOLORES RIVER BASIN

Taylor Creek near Gateway, Colo.

Location. Water-stage recorder, lat. 38 0 31', long. 1090 07', in sec. 24, T. 26 S., R. 25 

E., In Utah, a quarter of a mile downstream from South Taylor Creek and 12 miles southwest of Gateway.

Drainage area.--12 square miles.

Records available.--October 1944 to September 1950 (no winter records 1944-46).

Extremes. Maximum discharge during year, 83 second-feet Apr. 7 (gage height, 3.53 feet), 

I'rom rating curve extended above 35 second-feet; minimurS, 0.1 second-foot Aug. 10 (gage 

height, 2.01 feet).

1944-50: Maximum discharge, 555 second-feet Apr. 18, 1948; no flow at times June 

to August 1946, Sept. 29, 1949.

Remarks. Records fair. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

0.4 

.4 

.4 

.4 

.4

.4 

.4 

1.0 

.9

.6

.7 

.6 

.6 

.6 

.6

.6 

.6 

1.2 

2.4 

1.4

1.2 

1.1

1.2

1.2

1.2 

1.2 

1.2 

1.2 

1.1 

1.0

Nov.

1.0 

1.1 

1.1 

.9 

1.0

1.0 

1.0 

1.0 

1.0 

1.2

1.2 

1.2 

1.2 

1.2 

1.3

1.2 

1.21 

1.2 

1.0 

.9

.9 

1.0

1.0

1.1

1.1 

1.1 

1.0 

.9 

.8

Dec.

0.9 

.8 

.9 

.8 

.9

.9

.9 

.8 

*.7 

.6

.7 

b.5 

b.5 

b.7 

1.1

1.1 i.2"' 

1.2 

1.3

1.2

1.2 

1.2

1.2 

1.2

1'.2 

1.2 

1.2 

1.2 

1.2 

1.2

Jan.

1.2 

1.2 

bl.2 

1.2 

1.2

1.2 

1.1 

1.1

1.1 

1.1

1.1 

1.1 

1.2 

bl.2 

bl.2

bl.2 

1)1.2 

1.2 

1.2 

1.2

1.1

1.1

bl.l 

bl.l

bl.l 

bl.l 

1.2 

J.2 

1.2 

1.2

Feb.

1.2 

bl.2 

bl.2 

1.2 

1.2

1.2 

1.2 

1.3 

1.5 

1.3

1.2 

bl.3 

bl.3 

1-3 

1.4

1.3 

1.4 

1.5 

1.2 

1.2

1.2 

1.2

1.2

1.3

1.4 

1.5 

1.2

Month

Oo to 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1.2 

1.2 

1.2 

1.3 

1.4

1.7 

1.7 

1.6 

1.5 

1.4

1.8 

1.8 

1.8 

1.6 

1.5

1.4 

1.8 

1.9 

2.2 

2.2

2.5 

2.5 

2.8 

3.1 

3.0

3.1 

3.1 

2.7 

2.8 

3.2 

4.4

Apr.

6.9 

13 

20 

17 

17

29 

36 

53 

28

16

20 

25 

29 

25 

16

22 

25 

27 

25 

28

33 

33 

31 

24 

20

21 

22 

20

17 

16

Secondfoot-days

27.4 

31.8 

30.9

3,227.4

35.9 

35.8 

65.4 

714.9 

340.5 

143.6 

21.6 

S.4 

12.3

1,468.5

May

15 

15 

15 

16 

16

15 

13 

11 

9.8 

8.7

8.7 

8.7 

9.0 

9.4 

10

11 

12 

12 

12 

12

12 

11 

11 

10 

10

9.2 

8.4 

7.8 

7.4 

7.2 

7.2

Maximum

2.4 

1.3

1.3

158

1.2 

1.5 

4.4 

53 

16 

8.6 

1.4 

.4 

.7

53

June

8.0 

8.4 

8.6 

8.4 

8.2

7.4 

7.2 

7.4 

6.2 

5.6

5.2 

4.7 

4.4 

4.2 

4.2

4.1 

4.0 

3.9 

3.7 

3.5

 3.5 

3.5 

3.4 

3.1 

2.8

2.5 

2.2 

1.9 

1.8

1.6

Minimum

July

1.4 

1.3

1.1 

1.1 

1.2

1.2 

1.3 

1.4 

l.Z 

.9

.7 

.6 

.6 

.6 

.6

.5 

.5 

.5 

1.1 

.5

.4

.3 

.3 

.3 

.3

.3 

.3 

.4 

.3 

.2 

.2

0.4 

.8 

.5

.1

1.1 

1,2 

1.2 

6.9 

7.2 

1.6 

.2 

.2 

.2

.2

Aug.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.4 

.4 

.3 

.3 

.3

.2 

.3 

.2 

.2 

.2

.2 

.2 

.3 

.4 

.3

.4 

.4 

.4 

.4 

.3 

.3

Mean

0.88 

1.06 

1.00

8.84

1.16 

1.28 2.n

23.8 

11.0 

4.79 

.70 

.27 

.41

4.02

Sept.

0.2 

.2 

.2 

.2 

.4

.5 

.4 

.4 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4

.6 

.7 

.6

.4 

.4 

.5 

.5 

.5

.4 

.4 

.4 

.4 

.4

Runoff In 

acre-feet

54 

63 

61

6,410

71 

71 

130 

1,420 

675 

285 

43 

17 

24

2,910

Peak discharge (base, 40 sec. -ft.) .--Apr. 7 (3 p.m.) 83 sec. -ft.: Apr. 21 (6 p.m.) 59 aeo.-ft.

 Inter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record May 22 to June 12, June 15 tOjJuly llj discharge computed on basis of 

 ecorded range In, stage, veather records, and records for stations on nearby'streams.
DOLORES RIVER BASIN 179

Roc Creek near Uranium, Colo.

Location. --Water-stage recorder, lat. 38°26'05", long. 

4« N. , R. 19 W., at La Sal National Forest boundary,

°55'20", In NW^NWv sec. 12, T. 

miles west of Uranium.

Drainage area. 69.5 square miles.

Records available. --August 1944 to September 1950 (no winter records in 1945).

Extremes. Maximum discharge during year, 164 second-feet Apr. 6 (gage height, 2.48 feet); 

minimum daily, 0.2 second-foot Aug. 19, 21-24, Sept. 3,' 4.

1944-50: Maximum discharge, 508 second-feet Apr. 18, 1948 (gage" height, 3.93 feet), 

from rating curve extended above 130 second-feet; no flow July 7, 1946, Dec. 3-7, 13-22, 

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. 

180) is approximately equal to amount diverted from Roc Creek Basin. There are two 

small diversions between the site of present gage and the site a quarter of a mile downstream used prior to July 26, 1946.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.7 

1.4 

1.4 

1.2 

1.4

1.5 

1.4 

2.0 

3.4 

2.5

2.2 

2.2 

2.1 

2.0 

1.8

2.5 

2.6 

2.8 

8.5 

3.8

2.6 

2.3 

2.8 

2.8 

2.7

2.7 

2.7 

3.4 

4.7 

4.8 

4.8

Nov.

5.0 

5.0 

5.0 

5.2 

5.0

5.2 

5.0 

5.2 

5.2 

5.8

5.8 

4.8 

5.4 

5.4 

5.8

5.6 

5.6 

5.6 

5.8 

5.8

5.8 

5.8 

6.4 

6.0 

5.6

5.4 

5.8 

6.0 

6.0 

5.8

Dec.

5.6 

5.2 

5.0 

5.2 

4.4

4.7 

5.6 

*5.6 

6.4 

6.4

5.4 

3.4 

b3.8 

b4.5 

b6.0

6.0 

6.2 

6.4 

6.2 

6.0

5.2 

4.8 

4.9 

4.9 

4.8

5.0 

5.2 

5.2 

6.2 

5.4 

5.6

Jan.

5.8 

5.8 

5.8 

5.6 

5.6

5.8 

5.8 

6.0 

6.2 

6.4

*6.8 

7.2 

7.2 

6.6 

6.2

5.8 

5.4 

5.8 

5.4 

5.2

5.0 

4.9 

4.9 

4.9 

4.9

5.0 

5.2 

5.6 

6.2 

6.6 

7.4

Feb.

*8.0 

8.2 

8.2 

8.2 

8.4

9.6 

11 

12 

12 

11

9.0 

8.0 

8.0 

7.0 

7.0

7.0 

7.2 

7.2 

7.0 

7.2

7.2 

6.4 

6.4 

6.8 

7.2

7.2 

7.4 

8.2

Month

Ooto 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 .......................

Peak discharge (base, 100 sec. -ft.) . Apr.

Mar.

8.6 

9.0 

9.2 

9.0 

8.8

9.2 

9.2 

9.0 

 9.1 

9.4

9.4 

8.8 

7.9 

9.1 

8.8

8.8 

9.1 

9.7 

9.7 

10

9.7 

10 

10 

12 

12

10 

8.5 

7.6 

7.9 

9.4 

12

Apr.

18 

28 

43 

37 

40

67 

71 

73 

62 

34

34 

43 

54 

52 

43

43 

49 

51 

47 

47

56 

56 

56 

50 

36

37 

35 

33 

28 

25

Secondfoot-days

84.7 

165.8 

164.2

7,534.4

180.8 

228.0 

290.9 

1,348 

515.5 

168.1 

52.8 

16.5 

33.5

3,248.8

May

24 

23 

24 

22 

26

27 

24 

18 

15 

14

12 

12 

14 

14 

15

18 

19 

20 

18 

17

16 

16 

15 

14 

14

13 

12 

11 

10 

9.4 

9.1

Maximum

8.5 

6.4 

6.4

234

7.4 

12 

12 

73 

27 

10 

3.6 

1.0 

3.1

73

June

9.7 

10 

10 

9.7 

9.1

8.2 

7.9 

8.2 

7.3 

6.2

5.4 

5.0 

5.2 

5.2 

5.0

4.8 

4.8 

4.6 

4.6 

4.4

4.1 

4.1 

4.2 

3.8 

3.4

1 3.2 

3.0 

2.6 

2.3 

2.1

July

2.0 

1.8 

1.6 

1.5 

1.5

1.7 

2.0 

3.1 

3.6 

3.1

2.6 

2.2 

2.1 

2.0 

2.2

1.6 

1.4 

1.6 

1.6

1.8

1.4 

1.0 

.9 

.9 

.9

.9 

1.0 

1.5 

1.5 

1.0 

.8

Minimum

1.2 

4.8 

3.4

-

4.9

6.4 

7.6 

18 

9.1 

2.1 

.8 

.2 

.2

.2

Aug.

0.7 

.6 

.6 

.6 

.5

.5 

.5 

.6 

.4

.4

.6 

1.0 

.9 

,7 

.6

.5 

.3 

.3 

.2 

.3

,2 

,2 

.2 

.2 

.6

1.0 

1.0 

.8 

.6 

.5 

.4

Mean

2.73 

5.53 

5,30

20.6

5.83 

8.14 

9.38 

44.9 

16.6 

5.60 

1.70 

.53 

1.12

8.90

Sept.

0.3 

.3 

.2 

.2 

.3

.3 

.6 

.7 

.6 

.6

.7 

.8 

.7 

.7 

.6

.6 

.6 

.9 

2.3 

3.1

2.3 

2.3 

1.8 

2.2 

2.3

1.8 

1.6 

1.5 

1.4 

1.2

Runoff In 

acre-feet

168 

329 

326

14,940

359 

452 

577 

2,670 

1,020 

333 

105 

33 

66

6,440

6 (7:30 p.m.) 164 sec. -ft.

» Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Mote. No gage-height record Dec. 16 to Mar. 8 (stage-discharge relation affected by Ice most of 

period)j discharge computed on basis of 2 discharge measurements, weather records, and records for 

stations on nearbysatreama.
180 DOLURKS RIVER BASIN

Deep Creek near Paradox, Colo.

Location.--Water-stage recorder, lat. 38°30', long. 109°09', in NE£ sec. 3, T. 27 S., R. 

Zi> K., in ,Utah, a quarter of a mile downstream from diversion to Buckeye Reservoir and 

13 miles northwest of Paradox.

Records available. August 1944 to September 1950 (no winter records in 1945).

Extremes.--Maximum discharge observed during year, 4.2 second-feet Dec. &, (discharge 

measurement); minimum daily, 0.1 second-foot Sept. 3C

1944-50: Maximum discharge recorded, 29 second-feet June 18, 1949 (gage height, 1.52 

feet), from rating curve extended above 15second-feet; no flow Oct. 15-23, 27, Nov. 1, 

4-6, 1948, and probably at other times during winter months.

Remarks. Records 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).

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

Oct.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.3 

.3 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.7 

2.3 

2.6 

2.8 

2.8

Nov.

2.8 

2.8 

2.S 

2.6 

2.6

2.6 

2.6 

3.0 

3.0 

3.0

3.0 

2.8 

3.0 

3.2 

3.5

3.3 

3.3 

3.3 

3.3

3.3

3.3 

3.4 

3.6 

3.6 

3.5

3.5 

3.7 

3.7 

3.8 

3.8

Dec.

3.2

Jan.

2.8

Feb.

2.4

Month

Ooto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

MR v

June 

July 

Augu 

Sept

Wa

lendar year 1949

ember. ..................................

ter year 1949-5O .......................

Mar.

2.2

Apr.

2.2 

2.2 

2.2 

2.2 

1.9

1.9 

2.O 

2.2 

2.2 

2.0

1.9 

1.9 

2.1 

2.1 

2.1

2.1 

2.1 

2.3 

2.3 

2.5

2.8 

2.8 

2.S 

2.8 

3.0

1.9 

.6 

.4 

.4 

.4

Secondfoot-days

16.6 

95.7 

99.2

1,738.9

86.8 

67.2 

68.2 

6O.3 

1O.O 

7.3 

6.2 

6.2 

6.5

530.2

May

0.4 

.4 

.4 

.4 

.4

.4 

.4

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3 

.3

Maximum

2.8 

3.8

25

3.O 

.4 

.3 

.2 

.2 

.6

3.8

June

0.3 

.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 

.2 

.2 

.2 

.2

July

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2

.2 

.2 

.2 

.2 

.2

Minimum

0.2 

2.6

-

.4 

.3 

.2 

.2 

.2 

.1

.1

Aug.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2;2

.2 

.2 

.2 

.2

Mean

|-

0.54

3.2

4.76

2.8 

2.4 

2.2 

2.01 

.32 

.24 

.20 

.20 

.22

1.45

Sept.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.4

.6 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.1

Runoff in 

acre-feet

33 

190 

197

3,450

172 

133 

135 

120 

20 

14 

12 

12 

13

1,050

Note. No gage-height record Nov. 13 to Apr. lOj discharge computed on basis of discharge measure- 

,ment Dec. 9, veather records, and records for stations.on nearby streams.

Geyser Creek near Paradox, Colo.

Location. Water-stage recorder and sharp crested weir, lat. 38°28', long. 109°09i, in 

NEir 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 1950.

Extremes. HoTTow during year.

^944-50: Maximum discharge, 134 second-feet June 18, 1949 (gage height, 2.88 feet); 

by computation of flow over broad-crested weir; no flow during most of every year.

Remarks.--No flow since June 25, 1949. Flow diverted just above station to Buckeye

Reservoir in West Paradox Creek Basin. Figures for calendar year 1949 are as follows: 

total second-foot-days, 695.2; maximum daily discharge, 93 second-feet; minimum daily, 

no flow; mean, 1.90 second-feet; runoff, 1,380 acre-feet.
INDIAN CREEK BASIN 181

Indian Creek near Monticello, Utah

Location.--Water-stage recorder, lat. 37°51', long. 109°31', in SW£ sec. 4, T. 34 S., R. 22 

E. (unsurveyed), 1 mile northwest of Indian Creek guard station and 10 miles west of 

Monticello.

Records available. October 1949 to September 1950.

Extremes. Maximum daily discharge during year, 14 second-feet June 1-3; minimum daily, 

0.6 second-foot Sept. 14-16, 26-30, but may have been less during period of no gageheight record.

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

MO diversions above station.

Discharge, in second-feet, water year October 1949 to September 195O

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.

2.0

Nov.

2.0 

1.5

Dec.

1.5 

» 1.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Vtav

June 

July 

Augu 

Sept

Wa

Jan.

l.O

Feb.

1.5

lendar year

ter year 1949-5O ...............

Mar.

2.0

Apr.

2.5 

2.8 

3.0 

3.5 

4.0

4.5 

5.0 

4.7 

4.5 

4.5

5.0 

5.5 

6.O 

5.5 

5.O

5.2

5.5 

6.O 

7.0 

8.0

9.0

11 

13 

12 

11

12 

11

10

10

10

Secondfoot-days

62. 0 

52.5 

36. 0

-

31.0 

42. 0 

62.0 

206.7 

321.7 

280.7 

79.7 

33.6 

23.3

1,231.2

May

10 

11 

10 

10 

10

9.0 

8.5 

8.0 

7.5 

7..O

6.8 

7.O 

7.0 

7.3 

8.3

9.3 

10 

11 

11

12

12 

12 

13 

13 

13

13 

13 

13 

13 

13 

13

Maximum

.

-

13 

13 

14 

3.9

1.5 

1.6

14

June

14 

14 

14 

13 

13

13 

13 

13 

12 

11

10 

10 

10 

10 

9.9

9.6 

9.3 

8.3 

7.8 

7.6

7.0 

7.0 

6.8 

6.O 

5.7

5.7 

5.5 

5.1 

4.9 

4.5

July

3.9 

3.7 

3.7 

3.4 

3.0

2.9 

3.9 

3.7 

3.2 

3.2

2.9 

2.7 

2.G 

2.4 

2.3

2.1 

2.3 

2.4 

2.3 

2.1

2.0 

1.9 

1.8

1.8 

1.8

1.9 

1.8 

2.9 

1.9

1.7 

1.5

Aug.

1.5 

1.5 

1.4

1.4 

1.4

1.3 

1.3 

1.2 

1.2 

1.2

1.4 

1.4 

1.2 

1.0 

l.O

1.0 

1.0 

l.O 

1.0 

.9

.9 

.8 

.9 

1.0 

.9

.9

.8 

.8

:l.7

Minimum Mean

2.0 

1.75 

1.16

-

1.0 

1.5 

2.0 

2 5 6.89 

68 10.4 

4 5 9.36 

1 5 2.57 

7 1.08 

6 .78

3.37

Sept.

O.7 

.7 

.7 

.7 

.8

.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.6 

.6

.6 

.7

.8 

1.6 

1.3

.9 

.8

.8 

.8 

.8

.6 

.6 

.6

:l

Runoff in 

acre-feet

123 

104 

71

-

61 

83 

123 

410 

638 

557 

158 

67 

46

2,440

Note.--No gage-height record Oct. 1 to May 9 (stage-discharge relation probably affected by ice 

during most of winter); discharge computed on basis of 1 discharge measurement, weather records, and 

records for other stations on Indian Creek.
182 INDIAN CREEK BASIN

Indian Creek above Cottonwood Creek, near Monticello, Utah

Location.--Water-stage recorder, lat. 37°59>, long. 109°31 I , in SW£ sec. 21, T. 32 S., R. 

22 K., 8 miles upstream from Cottonwood Creek and 12 miles northwest of Monticello.

Records available.--October 1949 to September 1950.

Extremes. Maximum discharge during year, 113 second-feet Sept. 19 (gage height, 5.58 

feet); minimum, 0.2 second-foot Sept. 4.

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

which are-fair. One diversion above station.

Discharge, in second-feet, water year October 194-9 to September 195O

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

Oct.

, 3.5

3.5

3.3

3.3 

3.1 

2.9 

2.7 

2.7

2.7 

3.1 

6.4 

22 

4.0

4.5 

4.5 

4.5 

4.2 

4.0

4.0 

4.0 

4.2 

4.2 

4.2 

4.2

Nov.

4.0 

4.0 

4.0 

4.2 

4.0

4.0 

3.7 

3.7 

4.0 

4.0

4.0 

4.0 

3.3 

4.0 

3.3

3.3 

3.3 

3.3 

3.5 

3.3

3.3 

3.1 

3.5 

3.1 

2.9

3.1 

2.9 

2.9

*3.1 

2.7

Dec.

Z.I 

3.1 

3.0 

3.0 

3.2

3.2 

2.9 

2.7 

2.5 

2.7

i.'e

1.6 

1.8

2.0 

(*).

Jan.

1.6

> 1.8

2.2 

2.0

2.0 

2.0 

2.2 

2.4

1.9

1.4 

 1.6 

1.8 

2.0 

2.0 

2.0

Feb.

2.0

(*) 

2.5

2.6 

*2.8 

3.0

3.1 

3.3 

3.1

Month

Octo 

Nove

Dece

Ca

janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

her. ....................................

Lender year

ter year 1949^50 .......................

Mar.

2.7 

2.9 

2.7 

2.7 

2.9

3.5 

3.1 

3.3 

3.5 

3.1

2.9 

3.5 

3.3 

4.5 

2.9

2.5 

2.7

3.1 

2.9 

3.7

2.9 

3.7 

3.7 

4.0 

4.5

3.7 

3.3 

3.3 

3.1 

3.7 

3.5

Apr.

4.O 

5.0 

6.9 

5.3 

6.2

£.6 

7.3 

9.7 

9.3

7.7

7.7 

8.5 

9.3 

11 

1O

9.3 

8.9

10 

11 

12

14 

18 

20 

20 

18

17 

18 

19 

17 

16

Secondfoot-days

134.2 

105.5 

70.0

-

55.9 

67.9 

1O1.8 

342.7 

542 

473.5 

124.8 

37.0 

45.6

2,100.9

May

16 

16 

17 

18 

16

16 

16 

14 

12 

11

11 

11 

12 

12 

13

14 

17 

18 

19 

20

20 

20 

22 

24 

23

22 

22 

22 

22 

22 

24

Maximum

22 

4.2 

3.2

-

2.4 

3.3 

4.5 

20 

24 

26 

11 

~2.0 

14

26

June

25 

26 

26 

26 

23

22 

23 

22 

20 

18

17 

17 

17 

17 

16

16 

14 

14 

13 

12

11 

11 

11 

10 

9.7

8.9 

8.1 

7.3 

6.6 

5.9

July

5.6 

5.3 

4.8 

4.5 

4.5

4.5 

5.3 

5.6 

11 

5.9

f4.5 

f4.0 

f3.7 

3.5 

3.3

3.1 

2.9 

3.7 

3.3 

2.9

2.7 

2.4 

2.0 

Z.O 

2.0

4.6 

3.1 

4.5 

4.2 

2.9 

2.5

Minimum

2.7 

2.7

-

2.5 

4.0 

11 

5.9 

2.0 

.4 

.4

-

Aug.

2.0 

1.9 

1.9 

1.8 

1.6

1.6 

1.4 

1.3 

1.2 

1.3

1.9 

2.0 

1.8 

1.4 

1.3

l.l 

.9 

.9 

.9 

.8

.7 

.7 

.7 

.9 

1.0

1.0 

.9 

.7 

.5 

.5 

.4

Mean

4.33 

3.52 

2.26

-

1.80 

2.42 

3.28 

11.4 

17.5 

15.8 

4.03 

1.19 

1.52

5.76

Sept.

0.4 

.4 

.4 

.4 

.4

.7 

1.6 

1.3 

.9 

1.0

1.3 

1.0 

.9 

.8

.7

.7 

.7 

1.0 

14 

3.3

1.9 

1.4 

1.3 

1.4 

1.5

1.4 

1.2 

1.2 

1.2 

1.2

Runoff In 

acre-feet

266 

209 

139

-

Ill 

135 

202 

68O 

1,080 

939 

248 

73 

90

4,170

* Winter discharge measurement made on this day.

f Discharge computed on basis of partly estimated gage-height record.

Note.--Stage-discharge relation affected by ice Dec. 3-7, Dec. 13 to Jan. 18, Jan. 27 to Feb. 2. 

No gage-height record Oct. 1-8, Feb. 3-26 (stage-discharge relation affected by ice part of period); 

discharge computed on basis of 2 discharge measurements, weather records, and records for other 

stations on Indian Creek.
INDIAN CREEK BASIN 183

Cottonwood Creek near Monticello, Utah

Location. Water-stage recorder, lat. SS'OS 1 , long. lp9°34', in NE£ sec. 26, T. 31 S., R. 

21 E., 1 mile upstream from mouth and 18 miles northwest of Monticello.

Records available. October 1949 to September 1950.

Extremes. Maximum daily discharge during year, 30 second-feet Oct. 19; minimum daily, 0.3 

second-foot Aug. 9, but may have been less during period of no gage-height record.

Remarks. Records fair. No diversions above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

3.0

2.7 

2.5 

2.0 

2.0 

dl.5

dl.5 

d2.0 

d3.0 

30 

' 3.0

2.8 

2.7 

2.6 

2.5 

2.2

2.0 

1.8 

1.6 

1.5 

1.6 

1.5

Nov.

1.6 

1.6 

1.8 

2.5 

2.0

1.7 

1.6 

1.8 

2.5 

3.0

2.5 

2.3 

2.8 

2.4 

2.0

1.8 

1.5 

1.7 

2.2 

2.5

3.0 

3.0 

3.0 

2.8 

2.7

2.5 

2.2 

2.3 

*2.4 1.'9

Dec.

1.9 

d2.O 

d2.2 

d2.0 

d2.1

d2.3 

2.2

(*) 

> 2.5

Jan.

2.5 

(*)

Feb.

2.5 

2.5 

3.0 

4.0 

5.0

6.0 

5.0 

4.5 

4.0 

3.8

*d3.6 

d3.5 

d3.3 

3.2 

3.4

2.9 

2.5 

2.3 

2.2 

2.3

2.0 

2.3 

2.3 

2.3 

2.3

2.0 

2.3 

2.4

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year

ter year 1949-50 .......................

Mar.

2.2 

2.7 

2.4 

2.3 

2.3

2.3 

2.2 

1.8 

2.0 

1.6

1.9 

2.2 

d2.3 

d2.3 

2.4

2.7 

2.5 

2.7 

2.7 

2.9

2.9 

3.2 

2.9 

3.6 

3.8

3.8 

3.6 

3.6 

4.2 

4.2 

3.4

Apr.

3.6 

3.6 

3.6 

3.2 

3.5

3.8 

4.0 

4.0 

3.5 

3.0

3.0 

3.3 

3.5 

3.7 

3.5

3.0 

2.5 

2.5 

2.6 

2.7

2.9 

2:9 

2.5 

2.3 

2.0

2.2 

2.2 

2.0 

2.2 

2.2

Secondfoot-days

103.0 

67.6 

72.3

-

77.5 

87.4 

85.6 

89.5 

86.5 

90.1 

44.6 

20.3 

30.9

855.3

May

2.0 

1.9 

1.8 

2.9 

d2.7

d2.7 

2.7 

2.6 

2.5 

2.6

2.7 

2.9 

2.7 

2.5 

2.7

2.5 

2.5 

2.5 

2.7 

2.7

2.7 

2.5 

2.5 

2.7 

3.0

3.5 

3.8 

3.8 

3.7 

d3.8 

d3.7

Maximum

30 

3.0

-

6.0 

4.2 

4.0 

3.8 

4.9 

4.5 

1.9 

2.9

30

June

d3.8 

d4.0 

4.6 

4.4 

4.4

4.6 

4.9 

4.6 

4.6 

4.2

d3.7 

d3.5 

d3.2 

d2.8 

d2.5

d2.0 

d2.5 

d2.4 

d2.5 

d2.3

d2.2 

d2.3 

d2.3 

d2.2 

d2.1

2.0 

1.6 

1.5 

1.2 

1.2

July

1.0 

1.0 

1.0 

1.1 

1.0

1.3 

d2.0 

d2.7 

d2.5 

d4.5

2.0 

1.8 

1.8 

1.5 

1.2

1.4 

1.8 

2.2 

1.6 

1.5

1.2 

1.1 

1.0 

.7 

1.0

1.0 

1.6 

1.1 

.8 

.7 

.5

Minimum

1.5 

1.5

-

2.0 

1.6 

2.0 

1.8 

1.2 

.5 

.3 

.5

.3

Aug.

0.5 

.5 

.5 

.4 

.4

.5 

.5 

.4 

.3 

.4

.9 

1.9 

1.2 

1.0 

.8

.6

.5 

.5 

.5 

.5

.5 

.5

.6 

.7 

.9

.9 

.8 

.7 

.7 

.6 .'6

Mean

3.32 

Z.25 

2.83

-

2.50 

3.12 

2.76 

2.98 

2.79 

3.00 

1.44 

.65 

1.03

2.34

Sept.

0.5 

.5 

.6 

.6 

.7

1.6 

1.5 

1.0 

.8 

1.0

1.0 

.8 

.9 

.8 

.7

.7 

.7 

.9 

2.9 

2.4

1.1 

1.0 

1.0 

1.2 

1.9

1.0 

.9 

.8 

.7 

.7

Runoff In 

acre-feet

204 

134 

143

-

154 

173 

170 

178 

172 

179 

88 

40 

61

1,700

* Winter discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of 2 discharge measurements, weather 

records, and records for nearby streams.

Note. No gage-height record Oct. 1-10, 19-23, 25-31, Nov. 1-14, 16-28, Dec. 7 to Feb. 10, Apr. 5- 

20, May 7-10, 23-29, Aug. 13-28 (stage-discharge relation affected by Ice during most of winter); 

discharge computed on basis of 2 discharge measurements, weather records, and records for nearby 

streams.
184 GREEN RIVER BASIN

Green River at Warren Bridge, near Daniel, Wyo.

Location.--Water-stage recorder, lat. 43°00', long. 110°07', in sec. 8, T. 35 N., R. Ill 

WT7TOO feet upstream from bridge on U. S. Highways 187 and 189, 12 miles north of 

Daniel. Datum of gage is 7,468.09 feet above mean sea level, datum of 1929.

Drainage area.--468 square miles.

Records available. October 1931 to September 1950.

Average discharge.--16 years (1933-36, 1937-50), 499 second-feet.

Extremes.--Maximum discharge during year, 3,180 second-feet July 4 (gage height, 4.93 feet); 

minimum daily, 86 second-feet Mar. 15-18.

1931-50: Maximum discharge, 3,510 second-feet June 26, 1932 (gage height, 5.08 feet); 

minimum recorded, 31 second-feet Nov. 26, 1933 (gage height, 0.70 foot), from rating 

curve extended below 120 second-feet.

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

rair. Diversions above station for irrigation. Natural regulation by lakes in Green 

River Basin.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

230 

227 

221 

218 

212

218 

215 

212 

212 

209

206 

20C 

200 

195 

188

185 

190 

230 

310 

278

244 

230 

227 

215 

212

212 

206 

203 

203 

206 

190

Nov.

192 

190 

188 

185 

182

180 

178 

180 

188 

190

180 

145 

160 

192 

198

*215 

200 

175 

160

150

140 

140 

140 

160

210

125 

225 

240 

240 

215

Dec.

190 

190 

170 

150 

130

135

135 

140 

140 

130

110 

95 

92 

100 

*150

130 

110 

105 

110 

110

115 

120 

125 

120 

120

120 

125 

120 

125 

130 

125

Jan.

120 

120 

115 

105

100

105

110 

110

110 

105

105 

105 

105 

110 

110

105 

105 

*105 

110

115

115 

120 

120 

125 

125

120 

115 

115 

115 

115 

110

Feb.

110 

105 

110 

115 

125

135

*140 

140 

130 

120

120 

125 

125 

125 

130

130 

125 

120 

115 

115

110 

110 

115 

115 

115

115 

110 

105

Month

Ooto 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr!

MB V

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

105 

105 

105 

105 - 

105

105 

105 

100 

96 

94

92 

92

90 

90 

86

86 

86 

86 

88 

88

*92 

96 

96 

94 

98

98 

100 

100 

105 

115 

150

Apr.

195 

175 

160 

140 

135

200 

280 

390 

350 

280

310 

360 

450 

600 

680

710 

720 

650 

580 

480

450 

580 

570 

530 

450

*375 

325 

340 

325 

290

Secondfoot-days

6,704 

5,553 

3,967

182,144

3,470 

3,355 

3,053 

12,080 

28,085 

72,380 

60,590 

21,415 

13,111

233,763

Peak discharge (base, 1,800 sec. -ft.). June 2 (3 p.m.

May

260 

265 

280 

280 

260

230 

245 

270 

265 

*250

300 

500 

650 

920 

1,100

1,240 

1,300 

1,220 

1,100 

1,000

1,100 

1,300 

1,500 

1,500 

1,400

1,300 

1,350 

1,400 

1,400 

1,700 

2,200

Maximum

310 

240 

190

2,710

125 

140 

150 

720 

2,200 

2,990 

3,160 

1,020 

671

3,160

1 2,340 sec.

June

2,260 

2,270 

1,940 

1,700 

1,880

2,300 

2,620 

2,740 

2,390 

1,920

1,650 

1,820 

2,090 

2,220 

2,310

2,460 

2,660 

2,770 

2,810 

2,780

2,780 

2,860 

2,960 

2,990 

2,880

2,670 

2,420 

2,330 

2,380 

2,520

July

2,670 

2,870 

3,060 

3,160 

3,000

2,930 

2,840 

2,770 

2,590 

2,360

2,430 

2,480 

2,360 

2,050 

1,810

1,670 

1,540 

1,450 

1,350 

1,330

1,310 

1,300 

1,300 

1,280 

1,270

1,250 

1,240 

1,220 

1,260 

1,260 

1,180

Minimum

185 

140 

92

72

100 

105 

86 

135 

230 

1,650 

1,180 

476 

306

86

Aug.

1,020 

881 

853 

874 

902

916 

895 

839 

783 

748

741 

741 

748 

713 

657

620 

602 

620 

626 

608

602 

584 

578 

572 

572

566 

548 

524 

512 

494 

476

Mean

21G 

185 

128

499

112 

120 

98.5 

403 

906 

2,413 

1,955 

691 

437

640

Sept.

464 

458 

464 

464 

4-64

458 

458 

506 

512 

554

671 

657 

590 

524 

488

470 

428 

405 

380 

360

355 

345 

350 

350 

340

325 

320 

310 

306 

335

Runoff In 

acre-feet

13,300 

11,010 

7,870

361,300

6,880 

6,650 

6,060 

23,960 

55,710 

143,600 

120,200 

42,480 

26,010

463,700

-ft.; June 8 (9 a.m.) 2,770 sec.-

ft.; June 23 (11 p.m.) 3,040 sec.-ft.; July 4 (5 p.m.) 3,180 sec.-ft.

* Winter discharge measurement made on this day.

Note.--No gage-height record Nov. 16 to May 30 (stage-discharge relation affected by Ice during 

most of period); discharge computed on basis of 7 discharge measurements, weather records, and records for stations on nearby streams.
GREEN RIVER BASIN 185

Green River near Fontenelle, Wyo.

Location.--Water-stage recorder, lat. 42°07 T , long. 110°11', in SW£ sec. 20, T. 25 N., R. 

112 W., 1^ miles downstream from Muddy Creek, 4 miles northwest of Fontenelle.

Drainage area.--3..970 square miles.

Records available. October 1946 to September 1950.

Extremes. Maximum discharge during year, 11,400 second-feet June 19 (gage height, 7.84 

feet); minimum daily, 310 second-feet Dec. 14, 15.

1946-50: Maximum discharge, that of June 19, 1950; minimum daily, 290 second-feet 

Feb. 13-17, 1948.

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

which are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

594 

603 

585 

558 

549

549 

603 

621 

660 

670

650 

650 

640 

630 

621

603 

594 

650 

818 

1,050

1,050 

944 

905 

918 

905

944 

957 

957 

983 

1,050 

1,010

Nov.

957 

931 

944 

931 

892

879 

866 

866 

853 

879

879 

829 

774 

774 

796

818 

818 

774 

752 

710

680 

640 

630 

730 

785

796 

796 

796 

892 

892

Dec.

720 

700 

710 

670 

468

524 

532 

*558 

520 

490

390 

330 

340 

310 

310

320 

320 

330 

340 

340

330 

340 

370 

360 

350

360 

380 

370 

380 

390 

380

Jan.

380 

370 

360 

350 

340

350 

370 

370 

360 

360

350 

350 

360 

370 

380

370 

380 

400 

*420 

430

420 

420 

430 

440 

440

430 

450 

440 

430 

440 

440

Feb.

430 

420 

420 

440 

450

450 

450 

440 

440 

440

460 

460 

440 

450 

460

*480 

490 

500 

500 

520

520 

520 

510 

530 

570

590 

610 

610

Month

Octo 

Hove

Dece

Ca

Janu 

Febr 

Marc 

Apri 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 194£

ter year 19*9-50 .......................

Peak discharge (base, 3,500 sec. -ft.). AF

sec. -ft.; Apr. 23 (10 p.m.) 5,050 sec. -ft.; 

sec. -ft.; June 9 (5 p.m.) 9,500 sec. -ft.; JL

Mar.

600 

590 

580 

580 

600

590 

580 

570 

560 

550

540 

540 

550 

*550 

580

590 

600 

610 

640 

670

700 

680 

620 

590 

620

640 

620 

610 

670 

720 

763

Apr.

1, 

1, 

1, 

1,

1,

1, 

*1, 

2, 

3, 

2,

2,

z,

3, 

4, 

4,

5, 

5, 

5, 

5, 

3,

3, 

4, 

4, 

4, 

3,

2, 

2, 

2, 

2, 

2,

Secondfoot-days

23,521 

24,559 

13,232

554,371

12,200 

13,600 

18,903 

94,920 

113,990 

262,650 

187,950 

65,030 

33,320

863,875

230 

820 

610 

300 

110

050 

510 

680 

400 

470

000 

300 

320 

840 

910

430 

670 

810 

090 

980

730 

180 

730 

520 

420

770 

470 

630 

630 

310

May

2,140 

2,060 

2,030 

2,080 

2,000

1,800 

1,660 

1,740 

1,980 

1,910

1,790 

1,850 

2,180 

2,810 

3,770

4,450 

4,840 

5,160 

5,280 

4,960

4,130 

3,960 

4,560 

5,400 

5,860

5,880 

5,450 

5,280 

5,670 

5,790 

5,520

Maximum

1,050 

957 

720

8,000

450 

610 

763 

5,810 

5,880 

11,200 

10,200 

3,420 

1,410

11,200

June

6,120 

7,040 

8,040 

7,890 

6,680

6,270 

6,910 

8,340 

9,400 

8,890

7,320 

6,290 

6,290 

6,990 

7,770

8,600 

9,500 

10,400 

11,200 

11,000

10,800 

10,600 

10,800 

11-, 100 

11,000

10,800 

10,200 

9,140 

8,730 

8,540

July

8,500 

8,860 

9,300 

9,980 

10,200

9,950 

9,620 

9,240 

8,700 

7,980

7,480 

7,320 

7,070 

6,600 

5,980

5,280 

4,800 

4,430 

4,150 

3,870

3,730 

3,520 

3,460 

3,420 

3,280

3,140 

3,220 

3,320 

3,850 

4,020 

3,680

Aug.

3,420 

3,200 

2,960 

2,680 

2,920

2,880 

2,740 

2,610 

2,440 

2,330

2,250 

2,250 

2,280 

2,340 

2,310

2,140 

2,000 

1,880 

1,760 

1,680

1,640 

1,600 

1,540 

1,520 

1,460

1,440 

1,390 

1,350 

1,320 

1,270 

1,230

Minimum Mean

549 759 

630 819 

310 427

310 1,519

340 394 

420 486 

540 610 

1,050 3,164 

1,660 3,677 

6,120 8,755 

3,140 6,063 

1,230 2,098 

931 1,111

310 2,367

r. 9 (7:30 a.m.) 3,980 sec. -ft.; Apr. 18 (7 p 

May 19 (3 p.m.) 5,400 sec. -ft.; June 3 (10 p. 

ne 19 (6 p.m.) 11,400 sec. -ft.; July 5 (11 p.

Sept.

1,170 

1,100 

1,060 

1,020 

996

957 

931 

957 

1,020 

1,090

1,280 

1,410 

1,410 

1,340 

1,300

1,320 

1,210 

1,170 

1,110 

1,130

1,100 

1,070 

1,070 

1,060 

1,060

1,020 

996 

 970 

983 

1,010

Runoff in 

acre-feet

46,650 

48,710 

26,250

1,100,000

24,200 

26,980 

37,490 

188,300 

226,100 

521,000 

372,800 

129,000 

66,090

1,714,000

.m.) 6,200 

m.) 8,380 

m.) 10,300

sec.-ft.

* Winter discharge measurement made on this day.

Mote. Stage-discharge relation affected by ice Dec. 9 to Mar. 29 (no gage-height record Dec. 12 

to Jan. 18; discharge computed on basis of weather records and records for nearby stations).
186 GREEN RIVER BASIN

Green River near Llnwood, Utah

Location.--Water-stage recorder, lat. 40°58', long. 109°35', in SW£ sec. 29, T. 3 N., R. 

21 E., a quarter of a mile upstream from Henrys Pork, 2 miles south of Wyoming-Utah 

State line, and 5 miles southeast of Linwood. Datum of gage is 5,844.64 feet above 

mean sea level, unadjusted.

Drainage area. 14,300 square miles.

Records available. October 1928 to September 1950.

Average discharge". 22 years, 1,900 second-feet.

Extremes. Maximum discharge during year, 14,400 seoond-feet June 21; maximum gage height, 

13.47 feet Mar. 1 (backwater from ice); minimum daily discharge, 340 seoond-feet 

Dec. 14, 15, 17.

1928-50: Maximum discharge, 17,100 second-feet June 13, 1947; maximum gage height, 

that of Mar. 1, 1950; minimum discharge recorded, 196 second-feet Nov. 27, 1934 (gage 

height, -0.10 foot).

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

which are fair. Diversions above station for irrigation.

Discharge, in seoond-feet, water year October 1949 to September 1950

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.

580 

580 

598 

628 

634

622 

622 

682 

730 

760

814 

920 

1,080 

1,440 

1,300

1,160 

1,020 

972 

1,080 

1,150

1,150 

1,270 

*1,380 

1,370 

1,380

1,420 

1,350 

1,290 

1,270 

1,220 

1,170

Nov.

1,170 

1,160 

1,120 

1,080 

1,070

1,070 

1,040 

1,040 

1,010 

l.OOO

1,010 

1,020 

1,010

1,000

940

926 

933 

948 

988 

972

940 

919 

912 

842 

863

891 

964 

l.OOO 

1,040 

1,030

Dec.

*1 , 050 

1,110 

964 

919 

891

788 

722 

716 

698 

692

550 

400 

420 

340 

340

360 

340 

430 

440 

4OO

*390 

440 

500 

430 

520

460 

510 

460 

520 

540 

560

Jan.

530 

500 

470 

 460 

430

430 

440 

450 

410 

410

390 

410 

410 

430 

440

460 

510 

520 

540 

560

580 

630 

690 

720 

*740

590 

610 

560 

530 

500 

520

Feb.

490 

470 

450 

480 

520

520 

520 

530 

530 

520

510 

5OO 

510 

540 

*570

540 

56O 

590 

590 

*600

600 

640 

660 

720 

8OO

1,000 

2,100 

3,500

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

lendar year 1949 

apy

h. ......................................

1..... ..................................

ter year 1949-50 .......................

Mar.

6,200 

5,350 

4,430 

3,570 

3,980

3,660 

3,490 

2,870 

*2,630 

2,460

2,290 

1,950 

1,620 

1,450 

1,480

1,430 

1,430 

1,630 

1,690 

1,730

2,220 

2,O40 

1,730 

1,600 

1,650

1,700 

1,540 

1,38O 

1,360 

1,250 

1,310

Apr.

1,630 

2,250 

a4,300 

3,920 

3,660

2,970 

2,660 

a3,400 

aS.OOO 

a5,700

a4 , 000 

a3 , 6OO 

3,870 

4,470 

6,200

7,410 

7,480 

8,160 

8,520 

8,620

6,980 

5,960 

6,070 

6,830 

7,370

6,680 

5,760 

5,100 

4,600 

4,620

Secondfoot-days

31,642 

29,908 

17,900

717,048

15,870 

20,560 

73,120 

157,790 

197,270 

354,520 

224,740 

74,820 

41,280

1,239,420

May

4,500 

4,100 

3,840 

3,970 

3,920

4,380 

4,190 

4,140 

3,710 

3,650

3,760 

3,550 

3,360 

3,410 

3,950

5,110 

6,240 

7,050 

7,920 

8,860

9.O40 

8,380 

7,660 

7,840 

9,O40

10,300 

11,000 

1O.7OO 

9,700 

9,800 

10,200

Maximum

1,440 

1,170 

1,110

10,000

740 

3,500 

6,200 

8,620 

11,000 

14,100 

11,500 

4,160 

1,840

14,100

June

9,860 

10,100 

10,700 

10,900 

11 , 900

11,500 

10,300 

10,600 

11,700 

12,900

12,800 

11,400 

10,300 

9,540 

9,820

10,300 

11,100 

12,000 

12,900 

13,800

14,100 

13,700 

13,400 

13,300 

13,500

13,400 

13,200 

12,900 

11,900 

10,700

Minimum

July

10,300 

10,100 

10,200 

10,500 

11,000

11,400 

11,500 

11,300 

10,900 

10,400

9,760 

9,080 

8,620 

8,460 

7,940

7,250 

6,460 

5,930 

5,490 

5,130

4,720 

4,450 

4,180 

3,970 

3,780

3,700 

3,500 

3,490 

3,470 

3,710 

4,050

580 

842 

340

340

390 

450 

1,250 

1,630 

3,360 

9,540 

3,470 

1,410 

1,170

340

Aug.

4,160 

3,940 

3,680 

3,460 

3,250

3,130 

3,120 

3,040 

2,940 

2,830

 2,670 

2,520 

2,470 

2,430 

2,400

2,460 

2,380 

2,240 

2,100 

1,97O

1,850 

1,770 

1,730 

1,680 

1,620

1,580 

1,550 

1,510 

1,480 

1,450 

1,410

Mean

1,021 

997 

577

1,965

512 

734 

2,359 

5,360 

-6,364 

11,820 

7,250 

2,414 

1,376

3,396

Sept.

1,370 

1,330 

1,290 

1,270 

1,240

1,230 

1,200 

1,180 

1,190 

1,190

1,280 

1,840 

1,660 

1,570 

1,580

1,520 

1,470- 

1,410 

1,390 

1,420

1,770 

1,580 

1,450 

1,370 

1,360

1,290 

1,250 

1,220 

1,190 

1,170

Runoff In 

acre-feet

62,760 

59,320 

35,500

1,422,000

31,480 

40,780 

145,000 

313,000 

391,300 

703,200 

445,800 

148,400 

81,880

2,458,000

Peak discharge (base, 4,000 sec.-ft. ) .--Mar. 1 (time and discharge unknown); Apr. 2O (5 a.m.)

(2 a.m.) 14,400 sec.-ft.; July 7 (1O a.m.) 11,6OO sec.-ft.; Aug. 1 (3 a.m.) 4,220 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of discharge measurement made Apr. 3, recorded 

range in stage, weather records, and records for nearby stations.

Note. Stage-discharge relation affected by Ice Dec. 11 to Mar. 1.
GREEN RIVER BASIN 187

Green River near Jensen, Utah

Location-.. Water-stage recorder, lat. 40°24«30", long. 109°]4iOO", in SW&SE^ sec 5 T 

ITS77 R. 24 E., 1 mile below Cub Creek and Chew Ranch, 4 miles southeast of Dinosaur 

National Monument headquarters, 6| miles northeast of Jensen, and 12 miles upstream 

iroDi Brush Creek.

Records available.--October 1946 to September 1950.

Extremes. Maximum discharge during year, 24,200 second-feet June 4 (gage height, 10.92

 Feet1 ); minimum, 393 second-feet Dec. 14 (gage height, 0.98 foot).

1946-50: Maximum discharge, 28,800 second-feet May 13, 1947 (gag* height, 10.25 

feet); minimum recorded, that of Dec. 14, 1949.

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

 which are fair.

Discharge, In second-feet, Mkter year October 1949 to September 1950

nay

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 

50 

31

Oct.

1,030 

1,000 

964 

964 

1,O40

1,120 

1,160 

1,310 

1,570 

1,620

1,830 

2,010 

2,080 

2,190 

2,670

3,000 

2,610 

2,270 

2.21O 

2,100

2,170 

2,200 

2,170 

2,270 

2,340

2,340 

2,330 

2,390 

2,370 

2,270 

2,200

Nov.

2,140 

2,080. 

2,070 

2,020 

1,950

1,910 

1,890 

1,860 

1,830 

1,820

1,890 

1,800 

1,800 

1,810 

1,810

1,790 

1,710 

1,680 

1,73O 

1,750

1,750 

1,710 

1,65O 

1,580 

1,550

1,480 

1,510 

1,590 

1,730 

1,750

Dec.

1,760 

1,720 

1,700 

1,640 

1,440

1,330 

1,260 

1,210 

1,190 

1,220

1,170 

707 

 476 

515 

510

510 

626 

729 

736 

964

948 

960 

960 

900 

9OO

930 

960 

1,000 

1,05O 

1,100 

1,150

Jan.

1,180 

1,180 

1,150 

1,100 

1,050

*1,020 

990 

950 

940 

950

980 

1,000 

1,050 

1,110 

1,200

1,290 

1,290 

1,280 

*1,260 

1,330

1,410 

1,440 

1,550 

1,610 

1,680

1,670 

1,560 

1,350 

1,400 

1,450 

 1,480

Feb.

1,460 

1,390 

1,300 

1,200 

1,240

1,280 

1,350 

1,350 

1,300 

1,300

1,250 

1,210 

1,180 

1,160 

1,140

*1,120 

1,150 

1,170 

1,20O 

1,230

1,270 

1,300 

1,330 

1,380 

1,410

1,440 

1,500 

1,600

Month

Octo 

»OV» 

Dece

C»

Janu 

Febr 

Hare 

Apr! "«y.

June 

July 

Augu 

Sept

Ha

 ber. ...........--.--------.-----.------

lender year 1949 

ary

 ber

ter year 1949-50 .......................

Nar.

1,800 

2,400 

4,000 

5,600 

5,500

5,400 

5,500 

*5,500 

5,20O 

4,600

3,810 

3,590 

3,000 

2,380 

2,280

*2,280 

2,370 

2,460

2,650 

3,030

3,140 

3,270 

3,640 

3,130 

2,740

2,730 

2,780 

2,790 

2,700 

2,430 

2,280

Apr.

2,260 

2,550 

3,250 

4,570 

5,930

5,980 

5,OOO 

4,460 

4,680 

6.180

9,860 

10,500 

f8,160 

6,860 

7,440

9,980 

12,000 

11,600 

11,500 

12,200

12,400 

11,500 

11,000 

12,600 

14,9OO

15,100 

13,000 

11,700 

10,700 

9,950

Secondfoot -days

59,798 

53,640 

32,271

1,778,605

38,900 

36,210 

104,980 

267,510 

425,150 

605,900 

290,730 

97,080 

53,230

2,065,399

KKf

1O.OOO 

9,320 

8,740 

8,4*0 

8,940

9,500 

9,980 

9,440 

8,710 

8,130

7,600 

7,520 

7,490 

8,160 

9,440

11,700 

f 14, 200 

15,600 

17,400 

19,000

19,300 

18,900 

18,700 

19,300 

f 20, 400

21 , 600 

22,700 

20,700 

18,800 

17,800 

17,600

MaxlBUB

3,000 

2,140 

1,760

22,800

1,680 

1,600 

5,600 

15,100 

22,700 

23,800 

14,400 

5,220 

2,490

33.80Q

June

18,700 

20,100 

21,700 

23.800 

f 23, 400

21, tOO 

20,800 

21,000 

22,000 

21,500

20,500 

20,400 

20,000 

19,600 

19,300

19,500 

19,900 

20,400 

21,100 

21,200

f 21, 000 

20, 700 

19,800 

19,400 

19,OOO

19,000 

19,000 

18,200 

17,200 

15,800

July

14,400 

14,000 

13,400 

13,200 

13,400

13.800 

13,800 

13,700 

13,400 

13,000

12,900 

12,200 

11,400 

11,200 

10,800

10.000 

9,030 

8,130 

7,300 

6,690

6,210 

5,820 

5,370 

5,120 

4,900

,780 

,640 

,530 

,440 

,530 

,640

Minima

964 

1,480 

476

*76

940 

1,120 

1,800 

2,260 

7,490 

15,800 

4,440 

1,810 

1,340

476

Aug.

5,040 

5,220 

4,940 

4.57O 

4,280

4,000 

3,820 

3,760 

3,730 

3.66O

3,620 

3,320 

3,250 

f3,100 

3.O40

3,000 

3,020 

3,020 

2,87O 

2,700

2,550 

2,410 

2,250 

2,200 

2,130

2,070 

2,010 

1,960 

1,890 

1,640 

1,810

Mean

1,929 

1,788 

1,041

4,873

1,255 

1,293 

3,386 

8,917 

13,710 

20,200 

9,378 

3,132 

1,774

5,659

Sept.

1,750 

1,700 

1,640 

1,580 

1,510

1,450 

1,400 

1,370 

1,380 

1,340

1,340 

1,360 

1,610 

2,230 

1.97O

1,880 

1,940 

1,970 

1,890 

1,880

1,940 

2,040 

2,490 

2,210 

2,100

1,980 

1,940 

1,830 

1,780 

1,730

Runoff in 

acre-feet

118,600 

106,400 

64,010

3,527,000

77,160 

71,820 

208,200 

530,600 

843,300 

1,202,000 

576,700 

192,600 

105,600

4,097,000

Peak discharge (base, 14,000 sec.-ft.j.--Apr. 26 (7 a.m.) 15,600 sec. -ft.; June 4 (2:30 p.m.)

24,ZOO sec.-ft.

* Winter discharge measurement made on this day.

f Discharge computed from partly estimated gage-height record.

Note. Stage-discharge relation affected by ice De.c. 22 to Nar. 10 (no gage-height record Dec. 24 

to~Jan. 6, Jan. 11-19, Jan. 26 to Feb. 3, Feb. 15-21, and Feb. 25 to Nar. 5; discharge computed on 

basis of 5 discharge measurements, weather records, and records for other Oreen River stations).
188 GREEN RIVER BASIN

Green River near Ouray, Utah

Location.--Water-stage recorder, lat. 40°04', long. 109°44', In NE^ sec. 11, T. 5 S., R. 

SmmJinta meridian, 2^ miles upstream from Willow Creek and 3 miles southwest of 

Ouray.

Records available.--October 1947 to September 1950.

Extremes.--Maximum discharge during year, 31,900 second-feet June 7 (gage height, 12.17 

FeeTT; minimum dally, 700 second-feet Dec. 15, occurred during period of ice effect.

1947-50: Maximum discharge, 33,700 second-feet June 21, 1949; minimum daily, that 

of Dec. 15, 1949.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 "7 

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.

2,320

1,940 

1,850 

1,740 

1,700

1,740 

1,820 

2,100 

3,250 

4,030

3,010 

2,820 

2,900 

3,030 

3,110

3,270 

3,820 

3,930 

4,060 

4,870

4,180 

3,730 

3,580 

3,460 

3,510

3,620 

3,620 

3,550 

3,600 

3,580 

3,440

Nov.

3,420 

3,370 

3,270 

3,250 

3,270

3,150 

3,070 

3,010 

2,990 

2,980

3,030 

3,120 

3,010 

2,880 

2,900

" 2,960 

2,980 

2,920 

2,820 

2,810

2,840 

2,860 

2,820 

2,750 

2,700

2,650 

2,630 

2,560 

2,600 

2,700

Dec.

2,800 

2,810 

2,750 

2,700 

2,640

2,560 

2,460 

2,450 

*2,440 

2,300

2,100 

*1,800 

1,100 

740 

700

740 

900 

1,100 

1,400 

1,600

1,700 

1,700 

1,800 

1,600 

1,550

1,650 

1,750 

1,850 

1,950 

2,000 

2,050

Jan.

2,100 

2,100 

*2,050 

1,950 

1,900

1,800 

1,750 

1,650 

*1,550 

1,500

1,500 

1,550 

1,600 

1,700 

1,800

*1,900 

2,100 

2,300 

2,250 

2,150

2,250 

2,350 

*2,350 

2,400 

2,450

2,500 

2,450 

2,350 

2,250 

*2,300 

2,350

Feb.

2,400 

2,500 

2,400 

2,300 

2,200

*2,100

2,100 

2,200 

2,450 

2,400

2,300 

2,350 

*2,350 

2,300 

2,200

2,200 

2,200 

2,250 

2,300 

*2,350

2,400 

2,500 

2,600 

2,700 

2,800

3,000 

*3,150 

3,250

Month

Goto 

Nove 

Decs

Ca.

janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-50 .......................

Mar.

3,400 

%600 

4,400 

6,000 

6,800

7,500 

7,100 

7,400 

7,700 

*7,600

7,400 

6,400 

*5,800 

5,400 

5,000

4,600 

*4,420 

4,590 

4,460 

4,300

4,380 

4,780 

4,550 

4,890 

4,930

4,590 

4,260 

4,080 

4,010 

4,030 

3,840

Apr.

3,580 

3,530 

3,570 

4,030 

5,130

7,490 

7,560 

6,550 

6,040 

6,550

8,820 

11,800 

10,800 

9,400 

8,980

9,810 

12,400 

14,400 

14,000 

14,600

15,800 

15,200 

14,600 

15,400 

17,600

19,100 

17,600 

15,100 

14,400 

13,200

Secondfoot-days

97,180 

88,320 

57,690

2,534,980

63,200 

68,250 

162,210 

327,040 

539,010 

805,000 

358,490 

113,750 

73,090

2,753,230

Peak discharge (base, 16,000 sec .-ft .) .--Apr. 26 (3:30

Bay

12,600 

12,100 

11,400 

10,900 

10,700

11,200 

11,800 

12,200 

11,400 

10,600

9,930 

9,460 

9,460 

9,660 

10,600

13,100 

16,600 

19,600 

21,300 

22,200

23,400 

23,600 

23,900 

25,600 

27,000

28,700 

28,000 

28,200 

25,400 

24,000 

24,400

Maximum

4,87.0 

3,420 

2,810

33,000

2,500 

3,250

7,700 

19,100 

28,700 

31,600 

18,400 

5,700 

3,370

31,600

June

26,500 

28,200 

29,100 

29,700 

30,300

30,600 

31,600 

30,700 

28,400 

28,300

28,000 

27,300 

27,300 

26,500 

25,900

25,600 

26,600 

27,300 

27,800 

28,200

27,800 

27,100 

26,100 

25,200 

24,400

23,800 

23,100 

22,500 

21,200 

19,900

July

18,400 

17,200 

16,400 

16,000 

15,800

15,800 

16,000 

16,200 

16,200 

15,700

15,800 

15,700 

14,700 

13,500 

12,900

12,300 

11,500 

10,400 

9,720 

88,970

8,220 

7,560 

7,030 

6,590 

6,270

5,970 

5,750 

5,550 

5,590 

5,420 

5,350

Aug.

5,290 

5,480 

5,700 

5,550 

5,180

4,820 

4,550 

4,320 

4,160 

4,160

4,050 

3,910 

3,780 

3,710 

3,600

3,470 

3,400 

3,390 

3,390 

3,320

3,170 

3,010 

2,840 

2,710 

2,600

2,510 

2,440 

2,370 

2,360 

2,310 

2, ZOO

Minimum Mean

1,700 3,135 

2,560 2,944 

700 1,861

700 6,945

1,500 Z,039 

2,100 2,458 

3,400 5,233 

3,530 10,900 

x 9,460 17,390 

19,900 26,830 

5,350 11,560 

Z.200 3,669 

1,840 2,436

7001 7,543

Sept.

2,170 

2,120 

2,070 

2,000 

1,940

1,900 

1,840 

1,910 

2,020 

1,990

1,920 

1,960 

1,930 

1,930 

2,410

2,860 

2,610 

2,600 

2,710 

2,810

2,870 

2,930 

2,980 

3,120 

3,370

3,120 

2,960 

2,810 

2,700 

2,530

Runoff In 

acre-feet

192,800 

175,ZOO 

114,400

5, 028,000

125,400 

135,400 

321,700 

648,700 

1,069,000 

1,597,000 

711,100 

225,600 

145,000

5,461,000

a.m.) 19,300 sec. -ft.; June 7 (1 p.m.)

31,900 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge Interpolated.

Note. Stage-discharge relation affected by Ice Dec. 10 to Mar. 16 (no gage-height record Dec. 27 

to Jan. 9, Jan. 11-22, Jan. 31 to Feb. 27 and Mar. 9, 10; discharge computed on basis of 12 discharge measurements, weather records, and records for other stations on Green River).
GREEN RIVER BASIN 189

Green River at Green River, Utah

Location. Water-stage recorder, lat. 39°00', long. 110°09', in NW£SW£ sec. 15, T. 21 S.,

 K. lb E., 1 mile southeast of town of Green River, 22 miles upstream from San Rafael 

River, and 117 miles upstream from mouth. Datum of gage is 4,040.18 feet above mean 

sea level, datum of 1929.

Drainage area. 40,600 square miles.

Records available.--October 1894 to October 1899, October 1904 to December 1911, June 1924

 to September lt)50. December 1910 to June 1924 at site 7 miles downstream, published 

as Green River at Little Valley, near Green River. Records of monthly discharge prior 

to October 1938 have been republished in Water-Supply Paper 918.

Average discharge. 51 years (1894-99, 1904-50), 6,737 second-feet.

Extremes.--Maximum discharge during year, 30,000 second-feet June 6 (gage height, 12.15

 feet); minimum, 740 second-feet Dec. 17.

1894-99, 1904-50: Maximum discharge, 68,100 second-feet June 27, 1917 (gage height, 

14.53 feet, site and datum then in use); minimum, 255 second-feet Nov. 26, 1931; minimum gage height, 4.08 feet Aug. 1, Dec. 5, 1934.

Remarks. Records excellent except those for periods of ice effect, which are good. Di-

 versions above station for irrigation. Records of chemical analyses, water temperatures, and sediment loads for the water year 1950 are given in Water-Supply Paper 1189.

Revisions (water years). W 918: 1895-1900.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2,210 

2,740 

2,490 

2,040 

1,930

1,350 

1,790 

2,000 

2,100 

2,350

3,910 

4,050 

3,320 

3,130 

3,130

3,260 

3,320 

3,600 

5,680 

4,560

4,870 

5,030 

4,320 

3,940 

3,850

3,740 

3,790 

3,820 

3,790 

3,770 

3,820

Nov.

3,770 

3,630 

3,630 

3,570 

3,490

3,460 

3,430 

3,350 

3,290 

3,260

3,260 

3,160 

3,180 

3,240 

3,160

3,070 

3,0.70 

3,130 

3,130 

3,070

2,990 

2,990 

3,020 

3,050 

3,020

2,990 

2,940 

2,920 

2,890 

2,810

Dec.

2,810 

2,890 

2,970 

2,940 

2,890

2,790 

2,760 

2,660 

2,610 

2,660

2,660 

2,540 

2,350 

1,980 

1,180

887 

854 

956 

1,090 

1,380

1,520 

1,760 

1,890 

1,870 

1,930

1,770 

1,760 

1,870 

*1,960 

2,080 

2,170

Jan.

2,210 

2,260 

2,250 

2,200 

2,100

*2,OSO 

2,000 

2,020 

2,020 

2,000

*1,870 

1,800 

1,770 

1,890 

1,890

2,060 

2,210 

2,490 

2,510 

2,420

2,370 

2,460 

2,560 

*2,580 

2,600

2,700 

2,780 

2,800 

2,700 

*2,640 

2,790

Feb.

2,760 

3,020 

3,050 

2,840 

2,540

2,370 

2,350 

2,490 

2,580 

2,790

2,610 

2,660 

2,660 

2,540 

2,540

2,510 

2,460 

2,420 

2,400 

2,440

2,490 

2,490 

2,560 

2,640 

2,740

2,890 

2,990 

3,070

Month

Octo 

Move 

Dece

ca

Janu 

Pebr 

Marc 

Aprl

Uav

June 

July 

Augu 

Sept

Ha

nber. ...................................

lendar year 194S 

ary

ltJlt«V

ter year 1949-50 .......................

Mar.

3,260 

3,430 

3,680 

4,170 

7,270

8,950 

9,320 

8,860 

9,240 

9,450

9,150 

7,870 

7,160 

6,620 

5,980

5,380 

5,000 

4,840 

4,660 

4,660

4,530 

4,500 

4,660 

4,840 

4,840

5,160 

4,900 

4,630 

4,320 

4,200 

4,110

Apr.

4,020 

3,820 

3,650 

3,630 

3,820

4,410 

6,650 

7,760 

7,120 

6,360

6,260 

8,140 

12,800 

11,500 

9,960

8,860 

9,110 

12,200 

14,400 

14,000

14,500 

15,400 

14,700 

14,000 

14,800

17,200 

18,400 

17,000 

14,500 

13,600

Secondfoot-days

104,200 

96,020 

64,437

2,585,817

71,000 

73,900 

179,640 

312,570 

517,410 

769,900 

370,160 

123,920 

75,090

2,778,247

Peak discharge (base, 17,000 sec. -ft. ). Apr. 27 (5 p.

May

12,500 

12,000 

11,600 

11,200 

10,800

10,600 

11,300 

11,700 

12,000 

11,400

10,500 

9,880 

9,280 

8,910 

8,950

9,490 

11,500 

14,500 

18,400 

21,200

22,700 

23,800 

24,200 

24,400 

25,400

26,600 

27,800 

27,900 

27,600 

25,400 

23,900

Maximum

5,680 

3,770 

2,970

32,700

2,800 

3,070 

9,450 

18,400 

27,900 

29,800 

19,200 

5,910 

3,400

29,800

June

24,000 

25,500 

27,600 

28,800 

29,100

29,800 

29,100 

29,400 

29,100 

28,400

28,000 

26,900 

26,900 

27,000 

26,400

26,100 

25,800 

26,200 

26,600 

27,000

27,200 

26,700 

26,600 

25,600 

24,600

23,800 

23,100 

22,400 

21 , 800 

20,400

July

19,200 

17,600 

16,600 

16,000 

15,400

15,000 

15,600 

17,800 

16,900 

16,000

15,600 

15,600 

14,800 

14,000 

13,000

12,400 

11,900 

11,400 

10,700 

9,790

9,030 

8,340 

7,720 

7,190 

6,720

6,300 

6,120 

5,980 

5,810 

5,950 

5,710

Minimum

1,790 

2,810 

854

854

1,770 

2,350 

3,260 

3,630 

8,910 

20,400 

5,710 

2,400 

2,000

854

Aug.

5,580 

5,510 

5,540 

5,850 

5,910

5,610 

5,250 

4,940 

4,690 

4,470

4,350 

4,260 

4,170 

4,050 

3,910

3,770 

3,570 

3,460 

3,490 

3,510

3,570 

3,460 

3,290 

3,160 

2,990

2,840 

2,710 

2,640 

2,510 

2,460 

2,400

Mean

3,361 

3,201 

2,079

7,084

2,290 

2,639 

5,795 

10,420 

16,690 

26,330 

11,940 

3,997 

2,503

7,612

Sept.

2,350 

2,260 

2,210 

2,170 

2,100

2,080 

2,020 

2,000 

2,080 

2,100

2,170 

2,130 

2,080 

2,080 

2,060

2,040 

2,420 

2,810 

2,760 

2,790

2,860 

2,860 

2,940 

2,970 

3,020

3,180 

3,400 

3,240 

3,050 

2,860

Runoff In 

acre -feet

206,700 

190,500 

127,800

5,129,000

140,800 

146,600 

356,300 

620,000 

1,026,000 

1,567,000 

734,200 

245,800 

148,900

5,511,000

m.) 18,600 see. -ft.; May 28 (2:30 p.m.)

28,100 sec.-ftTs June 6 (5:30 p.m.} 30,000 sec.-ft.; July 7 (11:30 p.m.) 25,500 sec.-ft. 

* Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Jan. 3-29.
190 GREEN RIVER BASIN

Beaver Creek near Daniel, Wyo.

Location. Water-stage recorder, lat. 43°00", long. 110"09', In sec. 18, T. 35 N., R. Ill 

W., at Hanson 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 square miles.

Records .available. November 1938 to September 1950 (no winter records 1943).

Average discharge. 10 years (1939-42, 1943-50), 27.6 second-feet.

Extremes. Maximum discharge during year, 1,540 second-feet May 16 (gage height, 8.34 

reet), from rating curve extended above 1,060 second-feet; minimum dally, 0.4 secondfoot July 23, 24.

1938-50: Maximum discharge, that of May 16, 1950; no flow at times In most years.

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

which are poor. Diversions above station for irrigation.

Revisions (water years). W 1149: 1942(M), 1943, 1944, 1947(M).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.9 

2.5 

1.9 

1.3 

1.2

2.1 

2.5 

2.9 

4.2 

5.0

5.0 

5.2 

5.2 

5.0 

5.2

4.8 

7.5 

17 

19

15

10 

11 

12 

10 

9.5

14 

17 

18 

24 

25 

25

Nov.

24 

24 

24 

24 

23

21 

20 

22 

23 

23

20 

17 

16 

17 

17

*19 

20 

19 

19 

28

28 

20 

13 

16 

25

26 

22 

20 

18

17

Dec.

(») 

12

Jan.

10

Feb.

(*) 

11

Month

Octo 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

13

(«)

Apr.

Secondfoot-days

290.9 

625 

372

11,669.8

310 

308 

403 

2,795 

14,585 

5,138 

1,309.5 

173.9 

225.1

26,535.4

14 

14 

14 

14 

15

21 

25 

25 

20 

19

21 

25 

35 

31 

30

41 

57 

*72 

81 

94

130 

170 

168 

180 

£35

310 

304 

260 

200 

170

May

168 

160 

146 

133 

125

121 

120 

116 

116 

122

182 

420 

677 

856 

888

941 

1,020 

987 

695

560

575 

767 

328 

832 

686

465 

418 

402 

355 

310 

294

MaxlBun

25 

28

498

310 

1,020 

322 

133 

14 

17

1,020

June

242 

256 

322 

286 

201

193 

214 

240 

2O7

167

149 

136 

139 

145 

153

153 

153 

168 

173 

175

170 

167 

150 

152

146

130 

114 

78 

79 

80

Minimum

July

76 

88 

97 

118 

108

96 

83 

133 

96 

74

94

70 

44 

32 

24

13 

6.5 

5.5 

6.0 

6.1

5.2 

2.5 

.4 

.4

.5

2.9 

4.8 

5.2 

7.0 

6.5 

4.-0

1.2 

13

0

14 

116 

78 

.4 

.6 

4.0

.4

Aug.

1.9 

.6 

3.5 

8.5 

14

12 

8.0 

5.8 

5.0 

4.5

4.8 

6.0 

7.5 

9.5 

7.5

6.0 

5.0 

4.5 

4.2 

4.0

4.0 

3.8 

3.8 

5.5 

5.5

5.2 

5.0 

4.8 

4.8 

4.5 

4.2

Mean

9.38 

20.8 

12

32.0

10 

11 

13 

93.2 

470 

171 

42. 2 

5.61 

7.50

72.7

Sept.

.2 

.2 

.2 

.O 

.O

.0 

.5 

6.5 

6.5 

8.5

11 

8.5 

6.5 

6.0 

6.5

7.0 

8.5 

7.5 

6.5 

9.0

10 

10 

9.5 

9.0 

8.5

8.0 

8.0 

7.5 

10 

17

Runoff In 

acre -feet

577 

1,240 

738

23,150

615 

611 

799 

5,540 

28,930 

10,190 

2,600 

345 

446

52,630

Peak discharge (base. 140 ace.-ft.) . Apr. 22 (7 p.m.) 68O sec.-ft.; May 16 (11 p.m.) 1,540 sec.- 

ft.; May 24 (3 a.m.J 1,370 sec.-ft.; June 3 (9 a.m.) 345 see.-ft.; June 21 (8 p.m.) 181 sec.-ft.; 

July 8 (11 a.m.) 147 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 12-14, Nov. 27 to Apr. 25, Apr. 28, 29 (no 

gage-height record Dec. 3-13, Jan. 1 to Apr. 18, Apr. 24, 25; discharge computed on basis of 3 discharge measurements, weather records, and records for stations on nearby streams).
GREEN RIVER BASIN 

Horse Creek near Daniel, Wyo.

191

Location. Water-stage recorder, lat. 42°56', long. 110°12', in sec. 10, T. 34 N., R. 112 

H., 12 miles northwest of Daniel. Datum of gage is 7,349.61 feet above mean sea level, 

datum of 1929.

Drainage area. 124 square miles.

Records available. October 1931 to September 1950 (no winter records 1931-39, 1943, 1945).

Extremes. Maximum discharge during year, 828 second-feet June 17 (gage height, 3.88

reet), from rating curve extended above 680 second-feet; minimum daily, 11 second-feet 

Jan. 4, 5.

1931-50: Maximum discharge, 1,670 second-feet May 31, 1936, from rating curve extended above 800 second-feet; maximum gage height, that of June 17, 1950; minimum daily 

discharge, 1 second-foot July 22, *3, 1940.

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

which are fair. Diversions above station for irrigation.

Revisions (water years). W 1089: 1946.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

18 

17 

16 

16 

16

17 

17 

17 

19 

20

20 

19 

18 

18 

17

17 

20 

26 

30 

28

27 

23 

23 

23 

23

25 

24 

24 

28 

27 

24

Nov.

25 

25 

24 

24 

24

24 

23 

24 

24 

 24

21 

19 

20 

18 

18

19 

18 

18 

20 

20

24 

28 

27 

18 

22

22 

23 

24 

22 

20

Dec.

20 

20 

18 

17 

17

16 

15 

15 

15 

15

15 

14 

14 

14 

*13

13 

13 

13 

13 

13

13 

12 

12 

12 

13

13 

13 

12 

12 

12 

12

Jan.

12 

12 

12 

11 

11

12 

12 

12 

12 

13

«13 

13 

12 

12 

12

12 

12 

12 

12 

12

13 

13 

13 

13 

13

13 

13 

13 

13 

13 

12

Feb.

12

12 

12

12 

13

14 

14 

13 

13 

13

13 

14 

14 

14 

15

14 

14 

14 

15 

15

15 

14 

14 

14 

15

15 

16 

16

Month

Octo 

Move

Dece:

Ca

Janu 

r»br 

Marc 

Aprl 

Bay.

June 

July 

Augu 

Sept

Ma

 ber. ...........----------- -------------

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base. 3OO sec. -ft.

Mar.

16 

15 

15 

16 

16

16 

16 

16 

15 

15

15 

15 

15 

16 

17

17 

18 

18 

18 

18

17 

 17 

17 

18 

19

19 

18 

18 

17 

17 

18

Apr.

19 

21 

20 

17 

16

16 

18 

20 

22 

21

20 

*22 

30 

40 

60

80 

120 

198 

175 

172

238

297 

220 

150 

150

158 

153 

139 

103 

86

Secondfoot -day s

657 

662 

439

20,889.8

383 

389 

518 

2,801 

8,651 

17,291 

6,086 

1,340 

699

39,916

May

90 

88 

84 

*79 

72

75 

77 

79 

77 

72

92 

132 

183 

228 

245

281 

317 

353 

305 

265

285 

369 

441 

504 

504

458 

499 

584 

558 

553 

702

Maximal

30 

28 

20

590

13 

16 

19 

297 

702 

746 

499 

81 

38-

746

June

684 

684 

643 

494 

472

607 

724 

661 

499 

373

349

4£8 

544

589 

616

670 

746 

670 

652 

834

661 

CC6 

670 

620 

571

458 

458 

468 

468 

472

July

472 

499 

472 

417 

401

357 

317 

325 

277 

249

265 

228 

178 

144 

106

90 

95 

95 

99 

92

95 

75 

86 

92 

95

99 

74 

67 

74 

77 

74

Minima

16 

18 

12

7.4

11 

12 

15 

16 

72 

349 

67 

25 

19

11

Aug.

63 

SI 

77 

58 

50

56 

43 

37 

33 

31

31 

28 

34 

31 

35

50 

60 

55 

55 

52

46 

42 

39 

38 

35

34 

33 

32 

29 

27 

25

Mean

21.2 

22.1 

14.2

57.2

12.4 

13.9 

16.7 

93.4 

279 

576 

196 

43.2 

23.3

109

Sept.

24 

23 

22 

21 

21

20 

19 

22 

23 

32

38 

28 

25 

23 

23

24 

24 

23 

21 

21

22 

21 

21 

23 

21

20 

19 

19 

25 

31

Runoff In 

acre-feet

1,300 

1,310 

871

41,420

760 

772 

1,030 

5,56O 

17,160 

34,300 

12,070 

2,660 

1,390

79,180

). Apr. 21 (11 p.m.) 369 sec. -ft.; Hay 31 (8 p.m.) 778 sec. -ft.

18 sec.-ft.; June 17 (4 p.m.) 828 sec.-ft.

* Winter discharge measurement made on this day.

Mott. Stage-discharge relation affected by Ice HOT. 28 to Apr. 17 (no gage-height record Jan. 4 

to Mar. 22; discharge computed on bails of 2 lacharge measurements, weather records, and records 

for stations on nearby streams).
192 GREEN RIVER BASIN

Cottonwood Creak near Daniel, Wyo.

Location. Water-stage recorder, lat. 42°47', long. 1100 09', In sec. 11, T. 32 K., R. 112 

«., ij miles downstream from forks and 7 miles southwest of Daniel.

Drainage area. 204 square miles.

Records available. October 1938 to September 1950 (no winter records 1943).

Average discharge. 11 years (1938-42, 1943-50), 57.8 second-feet.

Extremes. Maximum discharge during year, 632 second-feet June 3; maximum gage height, 

 b.t>i feet June 8; minimum daily discharge, 12 second-feet Oct. 4, 5, Jan. 5.

1938-50: Maximum discharge, 648 second-feet June 19, 1946 (gage height, 6.75 feet), 

from rating curve extended above 460 second-feet. No flow Aug. 19-22, 1940.

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

wnicn are poor. Diversions above station for irrigation.

Revisions (water years). W 1119: 1941, 1943, 1946.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

18 

15 

14 

12 

12

14 

17 

17 

24 

25

23 

21 

19 

18 

18

16 

21 

46 

59 

40

28 

27 

26 

30 

46

50 

46 

46 

59 

57 

46

Nov.

50 

50 

46 

50 

46

46 

46 

48 

46 

46

*35 

27 

29 

33 

33

28 

23 

21 

20 

20

20 

21 

21 

19 

19

20 

20 

20 

20 

19

Dec.

18 

17 

16 

15 

15

15 

15 

16 

16 

16

14 

13 

13 

 14 

15

15 

15 

15 

15 

15

15 

16 

16 

16 

15

15 

16 

15 

15 

14 

14

Jan.

14 

14 

13 

13 

12

13 

13 

13 

13 

13

13 

14 

14 

14 

14

15 

15 

16 

17 

17

18 

18 1-8 

18 

18

17 

17 

17 

17 

17 

18

Feb.

18 

18 

18 

19 

19

19 

18 

18 

19 

19

20 

20 

21 

21 

21

21 

21 

21 

20 

2O

20 

20 

21 

22 

23

24 

24 

24

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

Hay.

June 

July 

Augu 

Sept

Ha

lendar year 1949

1..... ..................................

ter year 1949-5O .......................

Mar.

24 

23 

24 

25 

26

26 

25 

25 

26 

25

24 

24 

24 

25 

26

28 

28 

28 

28 

28

28 

28 

28 

28 

27

27 

26 

25 

»24 

 25 

28

Apr.

3O 

31 

30 

29 

27

26 

29 

40 

45 

42

40 

50 

70 

1OO

no

130 

170 

250 

250 

220

250 

280 

330 

300 

270

*250 

294 

294 

202 

158

Secondfoot -days

910 

942 

470

21,971.5

473 

569 

8O6 

4,347 

11,166 

14,353 

9,211 

2,574 

1,159

46,980

May

178 

174 

15B 

170 

120

106 

130 

158 

162 

134

154 

238 

354 

510 

530

545 

545 

565 

470 

378

402 

480 

520 

545 

530

465 

455 

490 

515- 

460 

525

Maximum

59 

50 

18

410

18 

24 

28 

330 

565 

621 

475 

174 

64

621

June

550 

565 

621 

550 

475

505 

560 

605 

530 

415

386 

39O 

425 

43O 

440

465 

490 

520 

500 

485

470 

505 

500 

495 

470

430 

398 

382 

390 

406

July

420 

435 

455 

475 

46O

43O 

402 

420 

382 

358

370 

350 

322 

290 

27O

246 

238 

222 

2O6 

206

210 

206 

2O2 

19S 

202

190 

190 

226 

238 

206 

186

Minimum

12 

19 

13

8.5

12 

18 

ZZ 

26 

106 

382 

186 

30 

26

12

Aug.

158 

146 

158 

162 

174

142 

120 

106 

90 

84

87 

1O6 

116 

116 

90

76 

66 

57 

48 

53

 50 

46 

44

43 

41

41 

40 

36 

35 

33 

30

Mean

29.4

31.4 

15.2

60.2

15.3 

20.3 

26.0 

145 

360 

478 

297 

83.0 

38.6

129

Sept.

28 

27 

27 

27 

27

26 

27 

30 

36 

61

61 

50 

43 

41 

41

41 

40 

40 

38 

40

38 

38 

40 

43 

40

33 

33 

35 

44 

64

Runoff In 

acre-feet

1,800 

1,870 

932

43,590

938 

1,130 

1,600

8,620 

22,150 

28,470 

18,270 

5,110 

2,300

93,190

Peak discharge (base, 25O sec. -ft.) . Apr. 27 (6 a.m.) 358 sec. -ft.; May 16 (11 a.m.) 590 sec. -ft.,

sec.-ft.; June 8 (6" a.m.) 621 sec.-ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Nov. 11 to Apr. 25 (stage-discharge relation affected by Ice during 

most of period); discharge computed on basis of 3 discharge measurements, weather records, and records 

for stations on nearby streams.
GREEN RIVER BASIN 

New Pork River below New Pork Lake, near Cora, Wyo.

193

Location.--Water-stage recorder, lat. 43°05', long. 110°01', in sec. 20, T. 36 N., R. 110 

W., 2 miles downstream from New Pork Lake and 9 miles north Of Cora.

Drainage area.--36.2 square miles.

Records available.--October 1938 to September 1950 (no winter records 1941, 1943).

Average discharge.--12 years, 47.5 second-feet.

Extremes.--Maximum discharge during year, 362 second-feet July 14 (gage height, 5.21 feet); 

minimum daily, 0.1 second-foot Sept. 20-22.

1938-50: Maximum discharge, 466 second-feet June 18, 1948; maximum gage height, 5.39 

feet May 24, 1941; minimum daily discharge, 0.1 second-foot May 13, 1941, Sept. 20-22, 

1950, when gates in dam at New Fork Lake were closed.

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

which are fair. Plow regulated for irrigation by New Pork Lake (capacity, 45,900 acrefeet). No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

Z

 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

Oct.

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

11

11 

13 

11 

12 

12

12 

7.8 

1.8 

1.6 

1.4

1.4 

1.0 

1.2 

1.4 

1.6 

1.2

Nov.

1.2 

1.2 

1.2

1.4 

1.4

1.4 

1.4 

1.4 

1.4 

 1.8

4.0

Dec.

«

(*)

5.5

Jan.

(*) 

5.0

Feb.

4.5

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

1. ......................................

ter year 1949-50 .......................

Mar.

4.0

Apr.

3.5

3.3

3.6 

3.6

4.8 

4.5 

3.9 

4.2 

3.3

3.6 

3.3 

3.0 

4.2 

3.6

Seeondfoot-days

270.4 

93.8 

170.5

16,467.5

155.0 

126.0 

124.0 

108.4 

110.3- 

8,231.3 

7,593 

616 

666.7

18,265.4

May

4.2 

4.2 

4.8 

4.8 

5.1

5.1 

5.7 

5.7 

6.3 

*4.5

3.9 

4.8 

6.3 

6.9 

6.6

5.4 

4.8 

4.8 

4.2 

4.2

2.4 

.9 

.8 

.6 

.5

.5 

.5 

.5 

.5 

.4 

.4

Maximum

13

355

6.9 

340 

350 

48

68

350

June

0.3 

30 

144 

266 

306

303 

303 

301 

299 

292

288 

284 

284 

281 

281

281 

281 

281 

306 

306

308 

308 

308 

306 

303

301 

301 

299 

340 

340

July

338 

325 

320 

306 

299

295 

273 

270 

262 

253

244 

231 

218 

266 

350

340 

332 

328 

322 

318

315 

308 

301 

213 

89

89 

89 

89 

89

72 

49

Minimum

1.0

-

.4 

.3 

49 

15 

.1

.1

Aug.

48 

48 

48 

48 

34

15 

15 

15 

15

15

15 

15 

15 

15 

15

15 

15 

15

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15 

15

Mean

8.72 

3.13 

5.5

45.1

5.0 

4.5 

4.0 

3.61 

3.56 

274 

245 

19.9 

22.2

50.0

Sept.

15 

15 

34

67 

67

67 

67 

67 

67 

68

52 

2.6 

.5 

.5 

.3

.3 

.2 

.2 

.2

.1

.1 

.1 

2.4 

40

31

.7 

.4

.3

.4 

.4

Runoff In 

acre-feet

536 

186 

338

32,670

307 

25O 

246 

215 

219 

16,330 

15,060 

1,220 

1,320

36,230

* Winter discharge measurement made on this day.

Note_.--Stage-discharge relation affected by lee Dee. 15-24, Jan. 13-24. No gage-height record 

Nov. 11 to Dee. 14, Dee. 25 to Jan. 12, Jan. 25 to Apr. 17 (stage-discharge relation affected by lee 

during most of periods); discharge computed on basla of weather records and gate openings at New 

Pork Lake.
194 GREEN RIVER BASIN

New Pork River near Boulder, Wyo.

Location. Water-stage recorder, lat. 42°45', long. 109°44', in sec. 9, T. 32 N., R. 108

 H., 70 feet downstream from county highway bridge, an eighth of a mile upstream from 

Boulder Creek, and half a mile southwest of Boulder.

Drainage area. 552 square miles.

Records available. Hay 1915 to September 1950.

Average discharge. 35 years, 397 second-feet.

Extremes.--Maximum discharge during year, 3,160 second-feet July 4 (gage height, 6.15 

reec); minimum daily, 110 second-feet Jan. 11-13.

1915-50: Maximum discharge observed, 12,300 second-feet June 17, 1918 (gage height, 

8.7 feet), from rating curve extended above 6,000 second-feet; minimum daily, 42 

second-feet Dee. 15-17, 1915.

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

 which are fair. Flow partly regulated by New Pork Lake (capacity, 45,900 acre-feet). 

Diversions above station for irrigation.

Revisions. W 879: Drainage area.

Day

1 

2 

3

4 

5

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

Oct.

145 

133 

130 

127 

124

124 

127 

152 

156 

14S

142 

139 

136 

133 

127

127 

142 

189 

230 

225

194 

173 

180 

176 

184

184 

184 

184 

196 

212 

194

Nov.

189 

189 

184 

176 

170

170 

162 

*166 

173 

180

176 

166 

166 

162 

162

162 

156 

136 

136 

133

133 

152 

162 

166 

166

162 

166 

202 

180 

162

Dec.

b!55 

b!50 

145 

135 

140

150 

155 

155 

160 

165

160 

150 

 145 

135 

130

130 

125 

120 

125 

125

130 

130 

130 

130 

130

130 

130 

135 

135 

135 

155

Jan.

130 

130 

125 

120 

115

120 

120 

120 

115 

115

110 

 110 

110 

115 

115

115 

120 

120 

120 

125

130 

135 

140 

140 

140

140 

135 

135 

135 

135 

135

Feb.

135 

140 

140 

140 

145

150 

150 

150 

145 

140

140 

145 

145 

145 

145

145 

145 

140 

140 

140

140 

145 

145 

145 

145

145 

140 

140

Month

Oeto 

Hove 

Dece

Ca

Janu 

F«br 

Marc 

Apr! 

MRV

June 

July 

Augu 

Sept

Va

nber. ...................................

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 1,500 sec . -f t . ) . Ap

sec. -ft.; June Z4 (12 a.) 3, ISO sec. -ft.; Ju

Mar.

135 

135 

140 

140 

140

135 

135 

130 

125 

120

120 

120 

120 

120 

120

120 

120 

125 

130 

130

135 

135 

130 

125 

130

130 

125 

«b!35 

b!45 

b!70 

bllO

Apr.

b220 

b245 

210 

190 

170

260 

350 

480 

400 

320

 260 

270 

469 

702 

774

1,000 

1,270 

1,320 

837 

553

559 

591 

572 

445 

374

341 

341 

380 

391 

385

Seeondfoot-*iy»

5,019 

4,965 

4.3O5

139,727

3,870 

4,010 

4,110 

14,679 

17,938 

63,620 

60,770 

17,377 

5,808

206,471

May

409 

403 

391 

403 

363

330 

319 

341 

409 

451

445

451 

517 

578 

565

565 

584 

553 

572 

584

553 

643 

708 

802 

802

816 

795 

850 

921 

900 

955

Maxima

250 

202 

165

2,110

140 

150 

190 

1,320 

935 

3,120 

3.13O 

1,050 

265

3,130

June

1,210 

1,290 

1,370 

1,230 

1,100

1,140 

1,420 

1,840 

1,890 

1,650

1,530 

1,420 

1,490 

1,670 

1,890

2,160 

2,540 

2,910 

2,980 

2,780

2,790 

2,970 

3,060 

3,120 

3,000

2,860 

2,690 

2,560 

2,570 

2,590

July

2,720 

2,900 

3,040 

3,130 

3,120

3,000 

2,920 

2,840 

2,610 

2,480

2,370 

2,420 

2,290 

2,110 

1,890

1,750 

1,680 

1,600 

1,520 

1,470

1,400 

1,340 

1,320 

1,240 

1,120

1,090 

1,05O 

1,030 

1,150 

1,120 

1,050

Aug.

1,050 

977 

928 

921 

S93

851 

823 

767 

734 

70S

662 

650 

630 

630 

604

565 

529 

433 

368 

363

368 

346 

336 

324 

314

302 

286 

275 

265 

250 

225

Mlnlmun Mean

124 162 

133 166 

120 139

88 583

110 125 

135 143 

120 133 

170 489 

319 579 

1,100 2,121 

1,030 1,96.0 

225 561 

148 % 194,

110 566

r. 18 (7 a.m.) 1,610 sec. -ft.; June 9 (2 a.m. 

ly 4 (3:30 p.m.) 3,160 sec. -ft.

Sept.

194 

184 

176 

170 

156

148 

152 

176 

176 

189

265 

240 

220 

220 

235

225 

220 

207 

194 

184

184 

184 

180 

180 

180

194 

194 

180 

194 

207

Hunof f In 

»cr«-f««t

9,960 

9,850 

8,540

277,200

7,680 

7,950 

8,150 

29,120 

35,580 

126,200 

120,500 

34,470 

11,520

409,500

) 2,040

* Winter discharge measurement nade on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 3 to Mar. 27, Apr. 3-10 (stage-discharge relation affected by 

Ice during most of periods); discharge computed on basis of 3 discharge measurements, weather records, and records for stations on nearby streams.
GREEN RIVER BASIN 

Pine Creek at Plnedale, Wyo.

195

Location.--Water-stage recorder, lat. 42°52', long. 109°52', at north edge of sec. 4, T. 33 

N., K. 109 W., 30 feet downstream from bridge on U. S. Highway 187 at Plnedale, 3 miles 

upstream from mouth. Datum of gage Is 7,162.34 feet above mean sea level, datum of 

1929.

Drainage area. 118 square miles.

Kecords available. April to October 1904, May 1915 to September 1950.

Average discharge.--35 years, 132 second-feet.

Extremes.--Maximum discharge during year, 1,320 second-feet July 5 (gage height, 5.72 

reet); minimum dally, 20 second-feet Sept. 6.

1904, 1915-50: Maximum discharge, 2,310 second-feet June 17, 1918 (gage height, 5.0 

feet, site and datum then In use); minimum dally, 2 second-feet Apr. 1-26, May'6-8, 193L

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

which are fair. Diversions above station for irrigation. Flow regulated by Fremont 

Lake (regulated capacity, 20,600 acre-feet, of which 9,840 acre-feet is for power purposes and 10,760 acre-feet is for irrigation).

Diversions, in acre-feet, above station during water year 1950 are given in the 

following table:

Ditch

Bloom. ..........

Montu

June

2,210 

4,680 

4.650

July

3,140 

4,940 

4,270

August

132 

1,260 

870

Note. Ho record available for Beyer ditch.

Cooperation. Records of diversions furnished by Bureau of Reclamation. 

Kevlsions.--W 879: Drainage area.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

40 

38 

3S 

34 

35

36 

39 

44 

42 

41

40 

39 

39 

38 

39

39 

41 

42 

44 

44

41 

40 

40 

40

40

39 

36 

38 

38 

38 

38

Nov.

36 

36 

35 

34 

34

34 

33 

33 

33 

*34

34 

33 

32 

30 

30

30 

30 

30 

29 

29

29 

29 

29 

29 

29

29 

29 

30 

30 

30

Dec.

30 

30 

30 

30 

29

30 

30 

30 

30 

30

30 

*34 

34 

34 

34

33 

33 

33 

32 

31

32 

32 

32 

32 

33

34 

34 

34 

34 

34 

34

Jan.

34 

32 

32 

32 

32

32 

34 

35 

35 

35

*35 

35 

34 

32 

32

32 

32 

32 

32 

32

33 

32 

32 

31 

30

30 

30 

30 

30 

30 

30

Feb.

29 

29 

29 

30 

3O

31 

31 

*32 

33 

34

34 

34 

33 

33 

33

33 

33 

33 

32 

32

31 

29 

30 

31 

33

35 

*36 

35

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

, Wa

mber. ...........---.-......--...-.......

lendar year 1949

ter year 1949-50. ......................

Mar.

34 

32 

33 

36 

39

41 

45 

40 

42 

*41

41 

41 

39 

39 

38

38 

38 

36 

36 

35

35 

35 

36 

36 

38

36 

36 

35 

36 

36 

35

Apr.

35 

36 

36 

36 

36

36 

38 

39 

38 

39

38 

40 

46 

57 

57

58 

51 

41 

39 

41

41 

41 

4O 

41 

39

39 

39 

40 

41 

41

Secondfoot-days

1,220 

942 

992

44,845

999 

898 

1,158 

1,239 

1,372 

19,167 

22,300 

5,592 

1,170

57,049

May

40 

40 

41 

40 

39

34 

34 

31 

34 

47

47 

47 

47 

35 

23

24 

25 

29 

26 

24

24 

23 

24 

26 

30

35 

44 

57 

83 

104 

215

Maximum

44 

36 

34

908

35 

36 

45 

58 

215 

1,020 

1,270 

357 

59

1,270

June

326 

344 

322 

298 

276

298 

366 

466 

466 

436

442 

419 

436 

472 

536

618 

708 

768 

807 

823

889 

940 

994 

1,O20 

1,020

976 

914 

906 

914 

967

July

1,060 

1,130 

1,23O 

1,270 

1,270

1,190 

1.18O 

1,10O 

1,070 

1,030

1,O10 

994 

923 

831 

738

655 

604 

536 

490 

484

430 

419 

408 

318 

266

263 

263 

266 

280 

290 

302

Minimum

34 

29 

29

14

30 

29 

32 

35 

23 

276 

263 

51 

20

20

Aug.

357 

339 

322 

314 

294

298 

298 

287 

276 

250

220 

218 

212 

209 

201

19t> 

164 

86 

86 

88

88 

88 

88 

88 

86

86 

82 

78 

77 

71 

51

Mean

39.4 

31.4 

32.0

123

32.2 

32.1 

37.4 

41.3 

44.3 

639 

719 

ISO 

39.0

156

Sept.

40 

35 

36 

27 

22

20 

21 

24 

24 

30

32 

30 

47 

48 

59

57 

56 

56 

47 

41

40 

39 

38 

36 

46

46 

45 

42 

42 

44

Runoff in 

acre -feet

2,42O 

1,870 

1,970

88,940

1,980 

1,780 

2,300 

2,460 

2,720 

38,O20 

44,230 

11,090 

2,320

113,200

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 4, 7, 11-18, Dec. 21 to Mar. 5 (no gage-height 

record Jan. 4-10, Jan. 25 to Feb. 26; discharge computed on basis of 1 discharge measurement, weather 

records,and records for stations on nearby streams).
196 GREEN RIVER BASIN

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

Location.--Water-stage recorder, lat. 42°53' , long. 109°43', In sec. 26, T. 34 N., R. 108 

W1 ., lj miles downstream from Little Half Moon Lake and 7 miles east of Pinedale.

Drainage area. 87.5 square miles.

Records available.--October 1938 to September 1950 (no winter records 1943-45).

Extremes. Maximum discharge during year, 914 second-feet June 18 (gage height, 6.13 feet), 

I'rom rating curve extended above 780 second-feet; minimum daily, 15 second-feet Oct. 

3-7, 16.

1938-50: Maximum discharge, 1,090 second-feet June 23, 1943 (gage height, 6.73 feet, 

site and datum then in use); minimum observed, 2.9 second-feet Nov. 10, 1944 (discharge 

measurement), but may have been less during period of no record.

Remarks.--Records good except those for Dec. 1 to Apr. 15, which are fair. Several small 

diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

Z 

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 

50 

31

Oct.

16 

16 

15 

15 

15

15 

15

16 

16

17

16 

16 

16 

16 

16

15 

16 

17 

19 

22

23 

23 

23 

23

23 

23 

23 

23 

23 

23

Nov.

24 

24 

24 

23 

23

23 

21 

19 

19 

20

21 

19 

19 

19

2O

20 

21 

22 

22 

22

22 

22

22 

22

22 

23 

26 

26 

26

Dec.

26 

26 

25 

25 

24

23 

23 

23 

22 

23

23

22 

*b22 

22

22 

22 

22 

22 

23

b22 

b22 

22 

21 

b21

21 

22 

22 

b21

21 

b21

Jan.

b21 

19 

b!8

b!8 

b!8

19 

18 

19 

18 

17

*17 

17 

17 

18 

17

18 

b!8 

blS 

blS 

19

19 

2O 

b!9 

blS 

blS

blS 

blS 

b!8 

blS 

blS 

b!8

Feb.

b!7 

b!7 

b!7 

b!8 

b!8

b!9 

b!9 

b20 

b21 

b22

23 

23 

b23 

22 

22

22 

22 

20 

21 

21

b21 

b21 

21 

21

21

21 

21

*21

Month

Octo 

Nove

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

b!9 

b!9 

19 

19 

18

18 

blS 

IB 

18 

18

blS 

b!8 

blS 

19 

18

18 

18 

18 

18

19

19 

*20 

b!9 

19 

20

21 

21 

b21 

b21 

b21 

21

Apr.

Secondfoot-days

577 

658 

598

39,711

564 

575 

589 

1,223 

5,552 

20,361 

13,077 

3,240 

1,201

48,315

21 

21 

b21 

b21 

b21

22 

22 

22 

22 

23

23

24 

25

26 

28

34 

37 

4O 

41

47

52 

58 

62 

66 

68

70 

72 

76 

80 

78

May

76 

74 

74 

72 

70

67 

66 

68 

68 

66

65 

65

66 

70 

76

92 

111 

154 

188 

210

212 

220 

242 

275 

310

340 

361 

414 

452 

452 

476

Maximum

23 

26 

26

868

21 

23 

21 

80 

476 

904 

814 

200 

47

904

June

532 

588 

592 

536 

512

580 

680 

796 

708 

588

488 

448

496 

596 

604

796 

878 

904 

855 

788

752 

765 

810 

828 

! 792

729 

672 

668 

688 

692

July

724 

783 

814 

782 

738

696 

668 

628 

556 

512

508 

528 

512 

459 

4OO

350 

313

292 

265 

248

235 

225 

218 

212 

208

205 

198 

198 

202 

200 

200

Aug.

2OO 

19O 

178 

166 

154

146 

138 

134 

128 

122

116 

112 

108 

105 

100

98 

93 

87 

84 

81

78 

74 

71 

68 

66

63 

62 

59 

57 

52 

50

Minimum Mean

15 18.6 

19 21.9 

21 22.5

13 109

17 18.2 

17 £0.5 

18 19.0 

21 40.8 

65 179 

448 679 

198 422 

50 105 

36 40.0

15 132

Sept.

47 

46 

42 

40 

40

37 

36 

36 

36 

39

42 

40 

40 

40 

41

40 

40 

40 

41 

42

41 

40 

39 

39 

39

39 

41 

38 

39 

41

Runoff in 

acre-feet

1,140 

1,310 

1,380

78,760

1,120 

1,140 

1,170 

2,430 

11,010 

40,390 

25,940 

6,430 

2,380

95,840

Peak discharge (base, 550 sec.-ft.). June 8 (12 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

n.) 8O6.sec.-ft.; June 18 (l a.m.) 914 sec.-ft.
GREEN RIVER BASIN 197

Fall Creek near Pinedale, Wyo.

Location.--Water-stage recorder, lat. 42°51', long. 109°43', in sec. 2, T. 33 N., R. 108

 W., at Mclntosh Ranch, half a mile downstream from Meadow Creek, 3 miles downstream 

from Burnt Lake, and 8 miles east of Pinedale.

Drainage area.--37.2 square miles.

Records available.--October 1938 to September 1950 (no winter records 1943, 1944). May

 1904 to October 1905 at site l£ miles downstream, published as Fall Creek at Fayette.

Average discharge.--1Q years (1904-5, 1939-42, 1944-50), 36.2 second-feet.

Extremes.--Maximum discharge during year, 430 second-feet June 14 (gage height, 7.73 feet, 

from recorded range in stage); minimum daily, 0.5 second-foot Oct. 5, 6, 12, 13.

1904-5, 1938-50: Maximum discharge, 546 second-feet June 22, 1943 (gage height, 7.83 

feet); minimum daily, 0.1 second-foot Sept. 21, 1942.

Remarks. Records fair. Practically no diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.2 

.9 

.6 

.6 

.5

.5 

.6 

.8 

.7 

.7

.6 

.5 

.5 

.8 

1.8

1.6 

2.0 

3.3 

3.0 

1.6

1.1 

.8 

.7 

.7 

.7

.6 

.6 

.9 

1.3 

1.4 

1.1

Nov.

1.0 

1.1 

1.2 

1.3 

1.1

1.1 

1.2 

 1.2 

1.4 

1.6

1.6 

1.8 

1.8 

2.0 

2.2

2.3 

2.4 

2.4 

2.5 

2.5

2.5 

2.6 

2.6 

2.9 

3.2

3.2 

3.6 

5.5 

7.0 

7.0

Dec.

.5 

.5 

.8 

.6

.0 

.0 

.0 

.O 

.0

.0 

.0 

.O 

* .0

.0 

.0 

.2 

.2 

.2

7.2 

7.4 

7.4 

8.0 

7.8

8.0 

8.2 

8.4 

8.4 

8.4 

8.4

Jan.

8.4 

8.0 

7.8 

7.8 

7.6

7.8 

8.0 

8.0 

8.4 

8.4

* .8 

.5 

.5 

.8 

.8

.8 

.6 

.8 

8.0 

8.2

8.2 

8.8 

8.0 

8.0 

8.0

8.O 

8.0 

8.0 

8.0 

8.0 

8.0

Feb.

7.6 

7.6 

7.6 

7.8 

8.0

8.2 

8.4 

8.8 

9.0 

9.4

10 

10 

9.6 

9.5 

9.5

9.5 

9.5 

9.5 

9.2 

9.2

9.2 

9.2 

9.2 

9.2 

9.0

9.0 

9.0 

*9.0

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

lendar year 194! 

ary

ter year 1949-5O .......................

Mar.

9.4 

9.0 

8.8 

9.0 

8.8

8.5 

8.8 

8.5 

8.5 

8.8

9.4 

8.8 

8.4 

.8 

.2

.2 

.1 

.0 

.O

.1

.1 

* .2 

.4 

.4 

.6

.0 

.0 

.8 

.8 

8.0 

8.2

Apr.

8.2 

8.5 

8.5 

8.5 

8.2

8.2 

8.8 

8.8 

8.8 

8.8

8.8 

8.8 

9.4 

10 

11

14 

15 

14 

15 

18

21 

25 

26 

26 

26

27 

28 

32 

36 

34

Secondfoot -days

32.7 

73.8 

228.0

13,716.2

247.0 

250.7 

249.6 

490.3 

2,677 

8,359 

4,279 

777 

234.8

17,898.9

May

31 

30 

30 

30 

28

26 

27 

30 

29 

26

26 

26 

27 

30 

32

46 

65 

93 

107 

107

101 

110 

137 

151 

164

169 

174 

201 

203 

194 

227

Maximum

3.3 

7.0 

8.4

304

8.4 

10 

9.4 

36 

227 

420 

271 

53 

9.0

420

June

250 

286 

250 

215 

219

286 

360 

328 

241 

196

172 

188 

a280 

8400 

a420

8388 

a360 

328 

271 

266

268 

304 

331 

295 

i 260

i 239 

i 229 

243 

243 

243

July

253 

271 

266 

248 

241

239 

225 

200 

174 

171

188 

189 

167 

147 

132

114 

101 

94 

86 

80

78 

73 

69 

66 

63

59 

55 

56 

59 

59 

56

Aug.

53 

49 

45 

41 

37

36 

34 

32 

30 

29

28 

27 

27 

24 

23

23 

22 

21 

20 

20

19 

18 

18 

16 

15

14 

13 

12 

11 

10 

10

Sept.

9.0 

8.8 

9.0 

8.8 

8.8

8.2 

.2 

.9 

.9 

.2

.0 

.8 

.5 

.8 

.8

.5 

.5 

.2 

.5 

.5

.2 

.2 

.2 

7.8 

8.0

8.2 

8.2 

8.2 

8.5 

9.4

Minimum Mean acre f t

0.5 1.05 65 

1.0 2.46 146 

6.6 7.35 452

.5 37. 6 "1 27,200

7.5 7.97 490 

7.6 8.95 497 

7.0 . 8.05 495 

8.2 16.3 972 

26 86.4 5,310 

172 279 16,580 

55 138 8,490 

10 25.1 1,540 

5.9 7.83 466

.5 49.0 35,500

Peak discharge (base, 2OO sec. -ft.). June 2 (2:30 p.m.) 319 sec. -ft.; June 7 (8 p.m.) 395 sec.-

ft.; June 14 (time unknown)" 436 sec. -ft.

Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of recorded range In stage and records for 

stations on nearby streams.

Note.--Stage-discharge relation affected by ice Dec. 4-23, Dec. 27 to Feb. 27, Mar. 13-30, Apr. 4,

5.
198 GREEN RIVER BASIN

Boulder Creek below Boulder Lake, near Boulder, Wyo.

Location.--Water-stage recorder,, lat. 42°50', long. 109°43', in sec. 14, T. 33 N., R. 108 

«., i mile downstream from outlet of Boulder Lake and 5 miles north of Boulder.

Drainage area. 130 square miles.

Records available. October 1938 to September 1950 (no winter records 1943, 1945).

Extremes. Maximum discharge during-year, 2,100 second-feet June 17 (gage height, 5.59 

feet); minimum daily, 20 second-feet Mar. 16-19.

1938-50: Maximum discharge, 2,440 second-feet June 22, 1943 (gage height, 5.96 

feet); no flow Nov. 28, 1939, to Apr. 15, 1940, Nov. 18, 1944.

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

wnicn are fair. Flow slightly regulated by Boulder Lake (capacity, 11,000 acre-feet). 

No diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

6 

7 

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.

28 

27 

27 

26 

26

26 

26 

26 

26 

25

26 

26 

25 

25 

25

24 

27 

27 

29 

29

29 

29 

29 

29 

28

28 

27 

27 

27 

27 

24

Nov.

24 

24 

24 

23 

23

23 

23 

23 

*23 

23

23 

22 

25 

26 

26

27 

28 

27 

27 

27

27 

26 

26 

26 

26

26 

27 

27 

28 

28

Dec.

28 

28 

28 

26 

28

27 

27 

27 

27 

27

27 

27 

27 

27 

*28

28 

28 

28 

28 

29

28 

28 

27 

27 

27

28 

28 

28 

27 

27 

27

Jan.

27 

27 

26 

25 

25

26 

26 

26 

25 

*25

24 

24 

24 

24 

25

25 

25 

25 

26 

26

26 

25 

25 

24 

24

24 

24 

24 

24 

24 

24

Feb.

23 

23 

23 

23 

24

24 

25 

26 

27 

28

28 

28 

27 

26 

26

26 

26 

26 

25 

24

23 

23 

24 

24 

25

26 

27 

*27

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Ha

lendar year 194'

ter year 1949-5O .......................

Mar.

25 

24 

24 

24 

25

25 

25 

25 

25 

23

25 

24 

23

22 

21

20 

20 

20 

20 

21

21 

*21 

21 

22 

23

24 

25 

25 

25 

25 

26

Apr.

26 

27 

27 

28 

30

32 

34 

34 

35 

35

34 

34 

35 

35 

38

40 

43 

45 

48 

50

54 

56 

60 

63 

64

66 

69 

72 

74 

74

Secondfoot-days

830 

758 

854

68,049.5

774 

707 

719 

-1,362 

3,823 

41,412 

26,387 

7,483 

3,546

88,655

May

72 

59 

60 

60 

60

62 

62 

63 

63 

63

63 

50 

35 

36 

37

39 

42 

43 

45 

48

75 

151 

156 

197 

272

279 

294 

306 

SOSSIS 

412

Maximum

29 

28 

29

1,640

27 

28 

26 

74 

412 

2,030 

1,710 

348 

164

2,030

June

562 

712 

784 

778 

800

968 

1,280 

1,390 

1,230 

1,030

908 

920 

1,080 

1,330 

1,580

1,800 

2,030 

1,940 

1,800 

1,730

1,770 

1,880 

1,920 

1,830 

1,720

1,580 

1,500 

1,520 

1,520 

1,520

July

1,620 

1,700 

1,710 

1,640 

1,540

1,480 

1,370 

1,200 

1,050 

986

1,020 

1,040 

966 

878 

784

701 

635 

585 

540 

516

484 

456 

436 

412 

404

388 

376 

368 

368 

368 

364

Minimum

24 

22 

27

9.0

24 

23 

20 

26 

35 

 562 

364 

154 

95

20

Aug.

348 

336 

321 

317 

313

310 

306 

302 

298 

294

291 

287 

279 

275 

272

264 

221 

194 

191 

191

188 

185

179 

176 

173

170 

167 

164 

161 

156 

154

Mean

26.8 

25.3 

27.5

186

25.0 

25.2 

23.2 

45.4 

123 

1,380 

851 

241 

118

243

Sept.

151 

143 

141 

148 

164

159 

151 

143 

136 

133

128 

121 

119 

116 

112

110 

104 

103 

99 

97

95 

95 

97 

97 

97

97 

97 

97 

97 

99

Runoff In 

acre-feet

1,650 

1,500 

1,690

135,000

1,540 

1,400 

1,430 

2,700 

7,580 

82,140 

52,340 

14,840 

7,030

175,800

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 12, Dec. 11, 15-17, 21, Jan. 10 to Feb. 12, 

Feb. 28. No gage-height record Dec. 12-14, 18, Dec. 22" to Jan. 9, Feb. 13-27, Mar. 1 to Apr. 6 

(stage-discharge relation affected by ice during part of periods); discharge computed on basis of 

1 discharge measurement, weather records, and records for stations on nearby streams.
GREEN RIVER BASIN 199

East Pork near Big Sandy, Wyo.

Location. Water-stage recorder, lat. 42°40', long. 109°25', in sec. 7, T. 31 N., R. 105 

W., 1 mile downstream from Jim Creek and 4 miles northeast of Big Sandy.

Drainage area. 79.2 square miles.

Records available. October 1938 to September 1950. May 1916 to September 1917 and May 

1921 to November 1923 at site 2-miles downstream, published as East Pork at East Pork 

Canal. No winter records 1916-17, 1921-23, 1941-45.

Extremes. Maximum discharge during year, 1,600 second-feet June 17 (gage height, 6.88 

reet), by slope-area method; minimum not determined.

1916-17, 1921-23, 1938-50: Maximum discharge, that of June 17, 1950; minimum discharge observed, 1.2 second-feet Jan. 4, 1940 (discharge measurement), but may have 

been less during period of ice effect.

Remarks. Records good above 20 second-feet and fair below except those for periods of ice 

effect or no gage-height record, which are poor. No diversion above station.

Discharge, In second-feet, Miter year October 1949 to September 195O

Day

1

2

3

4 

5

6 

7 

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.

14 

13 

13 

12 

11

11 

13 

14 

IS 

16

14 

15 

15 

14 

14

14 

15 

20 

ZZ 

20

ZZ 

27 

21 

20 

18

16 

16 

16 

16 

IZ 

18

Mov.

14 

14 

14 

14 

14

14

IZ 

15 

 12 

14

IZ 

IZ 

13 

13 

13

14 

15 

15 

14 

13

IZ 

13 

14 

15 

16

16 

16 

16 

14 

13

Dec.

(«) 

IZ

Jan.

(«) 

12

Feb.

IZ

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

*prl 

my.

June 

July 

Augu 

Sept

Ha

 ber. ....................................

 ber. ...................................

lendar year 1949 

ary

ter year 19 49 -SO ...............

Peak discharge (base, 700 sec. -ft.). June

rt.; June zs (5 a.m.; 1.Z9O eee.-ft. ; July Z

Mar.

IZ 

(«)

Apr.

15 

14 

IZ 

13 

13

15 

19 

20 

17 

18

20 

Zl 

25 

22 

25

27 

30 

28 

40 

*50

50 

60 

62 

66 

55

50 

52 

43 

48 

43

Secondfoot-days

498 

416 

37Z

37, 676. Z

37Z 

336 

372 

978 

7.6ZZ 

E7.519 

11,839 

2,148 

1,155

53.6Z7

nay

41 

39 

37 

35 

36

35 

34 

33 

34 

33

34 

4Z 

65 

9S 

134

160 

188 

223 

203 

188

208 

304 

403 

494 

526

518 

598 

710 

611 

675 

87S

Maxima

Z7 

16

1,110

66 

878 

1,350 

986 

119 

57

1,350

June

914 

884 

602 

544 

730

1,090 

1,150 

705 

552 

510

552 

81S 

1,OOO 

1,150 

1,240

1,300 

1,350 

950 

1,030 

936

1,060 

1,150 

1,O4O 

963 

1,040

770 

86O 

372 

776 

926

July

9Z6 

936 

908 

715 

690

665 

530 

434 

474 

473

570 

502 

438 

354 

Z68

Z53 

Z32 

205 

192 

190

178 

175 

170 

164 

162

162 

158 

15Z 

135 

18Z 

141

Aug.

119 

11Z 

109 

1O5 

1O5

103 

94 

88 

32 

77

74 

79 

76 

31 

74

69 

65 

62 

57 

55

53 

52 

48 

45 

43

42 

39 

37 

37 

34 

3Z

Minimum Man

11 16.1 

12 13.9 

12

4.2 103

IZ 

IZ 

IZ 

IZ 3Z.6 

33 246 

510 917 

141 38Z 

32 69.3 

24 38.5

147

Sept.

30 

29 

27 

26 

25

24 

24 

26 

Z7 

33

47 

43 

37 

35 

41

33 

35 

35 

35 

41

53 

57 

56 

52 

48

47 

48 

44 

44

48

Runoff In 

acre-feet

988 

825 

738

74,730

738 

666 

738 

1,940 

15, 120 

54,580 

23,480 

4,260 

2,290

106,400

7 (1 a.m.) 1,350 sec. -ft.; June 17 (Z a.m.) 1,600 sec.- 

(5 a.m.) 1,21O sec. -ft.

* Winter discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Hov. 11-23, Hov. 29 to Dec. 17. Ho gage-height 

record Dec. 18 to Apr. 19 (stage-discharge relation affected by Ice during part of period); discharge computed on basis of 2 discharge measurements. Heather records, and records for stations on 

nearby streams.

207364 O - 52 - 14
200 GREEN RIVER BASIN

Silver Creek near Big Sandy, Wyo.

Location. Water-stage recorder, lat. 42°45', long. 109°31', in sec. 17, T. 32 N., R. 106 

W., at Miller Ranch, 1 mile downstream from South Pork, 8 miles northwest of Big Sandy, 

and 11 miles east of Boulder.

Drainage area. 45.4 square miles.

Records available. October 1938 to September 1950 (no winter records 1942-45).

Extremes.--Maximum discharge during year not determined, occurred June 16 (gage height, 

Y.4Y feet), minimum-daily, 0.4 second-feet Oct. 1.

1938-50: Maximum discharge not determined, occurred June 16, 1950; no flow at times 

in most years.

Remarks. Records good above 15 second-feet and fair below except those for periods of no. 

gage-height record, which are poor. One small diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6

7

e

9 

10

11

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

O.4 

.5 

.5 

.5 

.5

.7 

.7 

.3 

.9 

.9

.9 

.9 

.9 

.9 

.9

.9 

1.0 

1.3 

1.8 

l.S

1.9 

2.0 

.8

!? 

.5 

1.7

Nov.

1.7 

1.6 

1.6 

1.6 

1.6

1.6 

1.5 

1.6 

 1.6 

1.6

1.5 

1.5 

1.5 

1.5 

1.5

1.5 

1.6 

1.6 

1.6 

1.4

1.3 

1.4 

1.5 

1.5 

1.5

1.5 

1.5 

1.5 

1.5 

1.5

Dec.

1.4

Jan.

1.4

Feb.

1.6

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 1949

ter year 1949-50 ...............

Peak discharge (base, 380 sec. -ft. . June

Mar.

2.0

Apr.

2.8 

2.6 

2.5 

' 2.7 

3.0

3.3 

3.6 

4.2 

4.0 

4.4

4.8 

5.6 

7.0 

7.0 

11

14 

15 

20 

25 

27

*30 

31 

26 

22 

19

18 

17 

17 

17 

17

Secondfoot-days

36.8 

45.9 

43.4

14,564.5

43.4 

44.6 

62.0 

383.5 

3,961 

17,714 

3,308 

154.5 

84.6

25,881.9

Hay

15 

15 

15 

14 

14

14

14 

15 

16 

15

16 

13 

33 

48 

63

80 

95 

111 

87 

77

92 

138 

176 

197 

230

244 

319 

373 

454 

421 

547

Maximum

2.O

1.7

421

31 

547 

975 

321 

29 

5.2

975

June

594 

565 

399 

399 

583

86O 

832 

487 

366 

323

373 

590 

760 

864 

900

975 

9OO 

716 

711 

675

711 

720 

558 

508 

491

404 

399 

380 

341 

330

July

321 

316 

282 

230 

199

184 

162 

141 

124 

122

131 

116 

93 

79 

70

61 

53 

48 

43 

42

37 

33 

53 

60 

52

46 

42 

40 

52 

42 

34

Aug.

29 

24 

19 

16 

11

6.5 

4,5 

3.3 

2.9 

2.7

2.4 

2.7 

2.7 

2.7 

2.4

2.0 

1.8 

1.5 

1.5 

1.5

1.6 

1.5 

1.5 

1.3 

1.3

1.3 

1.2 

1.2 

1.2 

1.2 

1.1

MlnlrauB Mean

0.4 1.19 

1.3 1.53 

1.40

.1 39.9

1.40 

1.60 

2.OO 

2.5 12.8 

13 128 

323 590 

33 107 

1.1 4.98 

.9 2.82

.4 70.9

Sept.

1.0 

1.0 

1.0 

1.0 

.9

.9 

.9

1.0 

1.1 

1.6

3.3 

2.6 

2.2 

2.6 

3.3

3.1 

3.1 

2.9 

2.9 

3.5

5.2 

4.8 

4.8 

4.5 

4.2

3.8 

4.2 

4.2 

4.2 

4.8

Runoff in 

acre-feet

73 

91 

86

28,890

86 

89 

123 

761 

7,860 

35,140 

6,560 

306 

168

51,340

1 (10:30 p.m.) 688 sec. -ft.; June 6 (9 p.m.) discharge

unknown; June 16 (7:30 p.m.) discharge unknown. 

* Winter discharge measurement made on this day. 

Note. No gage-height record Oct. 21 to Apr. 2O (stage -discharge relation affected by ice during 

most of period), Apr. 26 vto May 8; discharge computed on basis of 1 discharge measurement, recorded 

range in stage, weather records, and records for stations on nearby streams.
GREEN RIVER BASIN 201

North Piney Creek near Mason, Wyo.

Location.--Water-stage recorder, lat. 42°40 I , long. 110°21, in sec. 19, T. 31 N., R. 113 

W., 4 miles west of Mason.

Drainage area. 58 square miles.

Records available. May 1915 to October 1916, October 1931 to September 1950 (no winter 

records most years).

Extremes.--Maximum discharge during year, 515 second-feet July 4 (gage height, 4.10 feet); 

minimum daily, 9.0 second-feet Jan. 14, 15.

1915-16, 1931-50: Maximum discharge, 613 second-feet June 19, 1916, from rating 

curve extended above 450 second-feet; maximum gage height, that of July 4, 1950; minimum 

not determined, probably occurred during winter.

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

poor. Several small diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

23 

22

21 

20 

21

24

23 

23 

24 

23

22 

21 

22 

20 

18

18 

23 

32 

30 

24

25 

24 

23 

23 

24

24

23 

23 

27 

24 

21

Nov.,

23 

23 

22 

21 

21

20 

20 

21 

20 

20

*18 

17 

18 

16 

16

16 

16 

17 

17 

18

20 

21 

20 

17 

18

19 

20 

20 

20 

18

Dec.

18 

18

16 

16

15

13 

13 

13

13 

12

12 

12 

11 

10

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

9.5 

9.5 

9.5 

9.5

Jan.

9.5 

9.5 

9.5 

9.5

9.5

9.5 

10

10 

10 

10

10 

9.5 

9.5 

9.0

9.0

9.5 

10 

10 

10 

10

10 

10 

11

11 

11

11 

11 

11 

11 

11 

10

Feb.

10 

10 

10 

10

10

11 

11 

11 

11 

11

11

10 

10 

10 

10

10

11 

11 

11 

11

11

10

10

11 

11

11 

11 

11

Month

Oo to 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 194

1.. .....................................

ter year 1949-50 .......................

Mar.

11 

11 

11 

11 

11

12 

12 

12

11 

11

11 

11

11 

11

11

12 

12 

13 

14 

14

14 

14 

14 

14

15

15 

15 

*15 

14 

14 

15

Apr.

16 

16 

15 

15 

15

15 

15 

16 

17 

16

15 

16 

17 

23 

28

32 

40 

55 

55 

55

60 

70 

90 

75

*67

58 

60 

52 

45 

43

May

43 

41 

41 

38 

34

35 

36 

36 

35 

36

42 

48 

68 

97 

128

155 

174 

198 

147 

139

174 

232 

267 

282 

269

240 

230 

245 

247 

251 

276

fKESk **' 

715 32 

573 23 

360.0 18

18,197.0 302

311.5 11 

296 11 

392 15 

1,112 90 

4,284 282 

10,392 435 

8,853 502 

2,117 103 

1,214 48

 

30,619.5 502

June

291 

293 

282 

240 

232

276 

298 

300 

284 

258

243 

265 

306 

342 

372

408 

420 

408 

392 

381

392 

1 400 

425 

1 435 

428

388 

388 

1 395 

1 415 

435

July

448 

465 

485 

502 

500

478 

458 

428 

408 

395

390 

348 

306 

282 

258

247 

230 

216 

208 

200

187 

182 

167 

151 

144

134 

129 

137 

139 

121 

110

Aug.

103 

99 

97 

96 

96

87 

83 

79 

77 

75

75 

73 

75 

72 

66

63 

63 

61 

60 

59

57 

55 

54 

52 

52

52 

50 

48 

48 

46 

44

Minimum Mean

18 23.1 

16 19.1 

9.5 11.6

49.9

9.0 10.0 

10 10.6 

11 12.6 

15 37.1 

34 138 

232 346 

110 286 

44 68.3 

35 40.5

9.0 83.9

Sept.

42

41 

40 

39 

40

41 

40 

40 

48 

46

48 

44 

42 

44

46

42 

40 

39 

38 

39

38 

40 

39 

38 

36

35 

36 

35 

38 

40

Runoff in 

acre-feet

1,420 

1,140 

714

36,100

618 

587 

778 

2,210 

8,500 

20,610 

17,560 

4,200 

2,410

60,750

Peak discharge (base. 220 sec.-ft.). May 18 (3 a.m.) 228 sec.-ft.; May 24 (10 p.m.) 326 sec.-ft.; 

July 4 (12 m.} 515 sec.-ft.

* Winter discharge measurement made on this day.

Note.--Ho gage-height record Nov. 21 to Apr. 24 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 1 discharge measurement, weather reeordd, and records for stations on nearby streams.
202 GREEN RIVER BASIN

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

Location.--Water-stage recorder, lafc. 42°36', long. 110°28', in sec. 7, T. 30 N., R. 114

 W., 1 mile downstream from South Fork and 18 miles northwest of Big Piney.

Drainage area. 34.3 square miles.

Records available. July 1939 io September 1950 (no winter records 1943, 1946).

Extremes. Maximum discharge during year, 236 second-feet July 7 (gage height, 6.40 feet); 

minimum daily, 4.0 second-feet Jan. 15.

1939-50: Maximum discharge, 254 second-feet June 29, 1943, from rating curve extended 

above 190 second-feet; maximum gage height, that of July 7, 1950; minimum not determined, 

occurred during period of ice effect.

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

 wRTch are fair. Flow regulated by Middle Piney Lake (usable capacity, 4,200 acre-feet).

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

9.6 

9.2 

8.8 

8.8 

10

12 

12 

13 

13 

13

12 

12 

12 

12 

12

12 

14 

14 

12 

12

12 

14 

14 

15 

14

14 

14 

14 

14 

14 

13

Nov.

12 

12 

12 

12 

12

12 

12 

12 

12 

12

b!2 

*b!2 

11 

10 

10

9.5 

9.5 

9.5 

9.5 

9.5

10 

11 

11 

10 

9.5

9.5 

9.5 

9.5 

9.5 

9.0

Dec.

8.5 

8.5 

9.0 

9.0 

9.0

8.5 

8.5 

8.0 

7.5

7.5

7.0 

7.0 

T.O 

6.5 

6.0

6.0 

6.0 

6.0 

5.5

5.5

5.5 

5.5 

5.5

5.5 

5.5

5.5 

5.0 

5.O 

5.0 

4.8 

4.8

Jan.

5.0 

.0 

.0 

.8 

.6

.6 

.6 

.6 

.5 

.4

.4 

.3 

.2 

.2 

.0

.2

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.8 

.8 

.O 

.8 

.8 

5.0

Feb.

5.0 

5.0 

5.0 

5.O 

' 5.0

5.5 

5.5 

5.5 

5.5

5.5

5.5 

5.5 

5.5 

5.5 

5.5

5.5 

5.5 

6.O 

6.0 

6.O

6.0 

5.5 

5.5 

5.5 

5.5

5.5 

5.5 

5.5

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

sept

tfa

lendar year 1949

ter year 1949-50 .......................

Mar.

5.0 

5.5 

5.5

5.5 

5.5

5.5 

5.5 

6.0 

6.0 

6.O

6.0 

6.5 

6.5 

6.5 

6.5

7.0 

7.0 

7.5 

7.5 

7.5

7.5 

7.5 

7.0 

7.0 

7.0

7.0 

7.0 

7.0 

7.0 

7.0 

7.0

Apr.

7.O 

7.O 

7.0 

7.0 

7.5

7.0 

7.5 

8.0 

8.5 

9.5

10 

12 

13 

14 

16

18 

24 

29 

27 

27

26 

26 

29 

*16 

16

16 

16 

14 

12 

12

Secondfoot-days

385.4 

321.0 

2O4.1

8,041.3

143.0 

153.5 

202.4 

449. 0 

1,468.4 

4,787 

5,324 

1,593 

663

15,693.9

May

12 

11 

11 

10 

10

9.6 

9.2 

9.2 

9.2 

9.2

11 

15 

23 

29 

36

41 

44 

50 

42 

43

55 

70 

84 

96 

88

88 

98 

106 

101 

121 

127

Maximum

15 

12 

9.0

97

5.0 

6.O 

7.5 

29 

127 

214 

229 

88 

29

229

June

129 

127 

118 

103 

1O3

133 

155 

142 

123 

112

108 

121 

127 

148 

161

177 

192 

185 

188 

177

183 

190 

201 

212 

199

188 

185 

185 

196 

214

July,

216 

229 

227 

221 

216

223 

229 

227 

225 

221

218 

2O3 

192. 

183 

177

172 

166 

157 

152 

148

144 

140 

131 

127 

121

118 

114 

 114 

114 

103 

96

Minimum

8.8 

9.0 

4.8

-

4.0 

5.0 

5.O 

7.O 

9.2 

103 

96 

29 

14

4.0

Aug.

88 

75 

73 

73 

71

66 

64 

60 

60 

60

59 

58

55 

54

53

50 

48 

47 

44 

44

42 

41 

38 

35 

34

37 

36 

34 

33 

32 

29

Mean

12.4 

10.7 

6.53

22.0

4.61 

5.48 

6.53 

15.0 

47.4 

160 

172 

51.4 

22.1

43.0

Sept.

29 

28 

27 

27 

27

26 

26 

25 

27 

27

27 

25 

23 

24 

23

23 

22 

20 

20 

13

19 

18 

18 

18 

17

17 

14 

15 

16 

16

Runoff in 

acre-feet

764 

637 

405

15,940

284 

304 

4O2 

891 

2,910 

9,490 

1O,560 

3,160 

1,320

31,130

» Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 13 to Apr. 23 (stage-discharge relation affected by ice during 

entire period); discharge computed on basis of unpublished record for site 2 miles downstream, 

weather records, and records for stations on nearby streams.
(KEEN RIVER BASIN 203

Fontenelle Creek near Fontenelle, Wyo.

Location. Water-stage recorder, lat. 42°06', long. 110°13', In sec. 3, T. 24 N., R. 113 

w., b" miles west of Fontenelle.

Drainage area. 224 square miles.

Records available.--May 1915 to September 1919, October 1931 to September 1950.

Average discharge.--22 years (1916-19, 1931-50), 62.0 second-feet.

Extremes. Maximum discharge during year, 722 second-feet Apr. 23 (gage height, 3.58 

TeeTT; minimum daily, 20 second-feet Sept. 2-4.

1915-19, 1931-50: Maximum discharge observed, 922 second-feet Apr. 19, 1938 (gage 

height, 4.00 feet, site and datum then In use), from rating curve extended above 380 

second-feet; no flow Aug. 1-5, Aug. 23 to Sept. 15, 1934, June 27-30, Sept. 18-27, 1940.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

30 

30 

28 

30 

32

34 

41 

39 

40 

40

41 

42 

51 

47 

42

41 

41 

42 

50 

43

39 

41 

40 

41 

42

43 

43 

42 

43 

51 

45

Hov.

43 

*43 

40 

39 

39

35 

34 

36 

40 

40

37 

28 

33 

36 

40

3T 

34 

34 

34 

33

35 

37 

36 

41 

43

39 

36 

40 

41 

35

Dec.

39 

37 

33 

34 

35

34 

27 

*2~6 

26 

28

24 

23 

24 

24 

24

24

25 

25 

24 

23

23 

23 

24 

24 

24

24 

25 

25 

26 

26 

26

Jan.

25 

24 

23 

22 

22

*23 

23

25 

2F

24 

24 

24 

24 

24

24 

25 

26 

26 

26

26 

26 

25 

25 

25

26 

26

25 

26 

27

Feb.

*27 

28 

28 

29 

30

30 

29 

28 

28 

Z9

30 

32 

32 

33 

33

32 

31 

31 

32 

33

31 

30 

30 

31 

32

34 

34 

34

Month

Oeto 

Move 

Deee

Ca

Janu 

Pebr 

Hare 

Aprl

Mftv

June 

July 

Augu 

Sept

Ha

 ber. ...................................

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 150 sec. -ft.). Apr.

May 19 (5 a.m.) 660 sec. -ft.; May 25 (4 a.m.

Mar.

32 

33 

33 

34 

36

36 

34 

33 

33 

34

32 

31 

35 

»38 

39

40 

41 

38 

36 

35

34 

34 

34 

38 

42

39 

38 

39 

44 

50 

58

Apr.

64 

101 

*86 

68 

58

55 

74 

114 

114 

94

79 

85 

118 

185 

195

276 

390 

460 

432 

338

414 

502 

618 

538 

362

306 

302 

316 

240 

185

Secondfoot -days

1,254 

1,118 

829

22,832

765 

861 

1,153 

7,169 

11,603 

14,640 

4,126 

1.81S 

999

46,333

May

185 

190 

192 

185 

157

146 

152 

146 

157 

146

163 

210 

282 

366 

453

485 

485 

540 

612 

485

436 

457 

513 

592 

624

600 

520 

516 

540 

532 

536

Maximum

51 

43 

39

348

27 

34 

58 

618 

624 

632 

272 

91 

45

632

June

572 

596 

628 

628 

572

502 

528 

576 

632 

528

457 

422 

432 

460 

478

496 

513 

528 

513 

510

485 

482 

474 

474 

460

426 

370 

324 

292 

282

July

272 

258 

240 

234 

219

205 

205 

205 

188 

175

172 

155 

134 

116 

111

105 

92 

75 

69 

61

58 

58 

58 

61 

56

70 

74 

84 

114 

107 

95

Minimum

28 

28 

23

18

22 

27 

31 

55 

146 

282 

56 

25 

20

20

Aug.

Mean

40.5 

37.3 

26.7

62.6

24.7 

30.8 

37.2 

239 

374 

488 

133 

58.6 

33.3

127

91 

85 

78 

75 

74

74 

75 

70 

66 

65

65 

66 

65 

65 

63

60 

57 

55 

54 

55

55 

57 

53 

51 

47

42 

37 

33 

30 

28 

25

Sept.

21 

20 

20 

20 

21

21 

22 

22 

23 

26

32 

31 

31 

33 

36

36 

39 

40 

39 

42

44 

45 

44 

43 

43

42 

40 

39 

42 

42

Bunoff In 

acre-feet

2,490 

2,220 

1,640

45,290

1,520 

1,710 

2,290 

14,220 

23,010 

29,040 

8,180 

3,600 

1,980

91,900

18 (9 p.m.) 520 sec. -ft.; Apr. 23 (6 p.m.) 722 sec. -ft., 

) 640 sec. -ft.

Winter discharge measurement made on this day. 

Mote. Stage-discharge relation affected by Ice Dec. 2 to Jan. 10, Feb. 1-5, Mar. 15-21. Ho gageheight record Jan. 11-31, Feb. 6 to Mar. 14, Mar. 24-31 (stage-discharge relation affected by Ice 

during most of periods); discharge computed on basis of 1 discharge measurement, weather records, 

and records for stations on nearby streams.
204 GREEN RIVER BASIN

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

Location.--Water-stage recorder, lat. 42°35', long. 109°17', in sec. 18, T. 30 N., R. 104 

W., at Leckie Ranch, half a mile downstream from Squaw Creek and 9 miles southeast of 

Big Sandy.

Drainage area.--94 square miles.

Records available. July 1910 to August 1911, July 1939 to September 1950 (no winter records 1910-11, 1942-45).

Extremes. Maximum discharge during year, 1,180 second-feet June 17 (gage height, 6.85 

1'eet), by slope-area method; minimum not determined.

1910-11, 1939-50: Maximum discharge, that of June 17, 1950; minimum discharge observed, 4.8 second-feet Jan. 4, 1940 (discharge measurement), but may have been less 

during period of ice effect.

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

wnicn are poor. Few diversions above stations.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

Z 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

Zl

Z2 

23 

24 

25

Z6 

Z7 

Z8 

29 

30 

31

Oct.

21 

18 

16 

15 

15

15 

20 

22 

24 

23

20 

21 

22 

22

21

21 

24 

40 

36 

28

32 

38 

39 

36 

35

30 

29 

28 

27 

22 

30

Mov.

29 

26 

26 

27 

27

26 

27 

*24 

24 

23

22 

20 

19 

20 

20

21 

21

21 

20 

19

18 

19 

20 

21 

22

22 

22 

21 

20 

18

Dec.

(*) 

17

Jan.

15

Feb.

14

Month

Ooto 

Move 

Dece

Ca

Janu 

Pebn 

Marc 

Aprl

Mav

June 

July 

Augu 

Sept

Ha

lendar year 1949

St......................................

ter year 1949-5O ...............

Peak discharge (base, 40o sec. -ft.). June

ft.; June Z5 (3:3O a.m. ) 874 sec. -ft.; July 

* Winter discharge meaaurement made on thi 

Note. Stage-discharge relation affected b 

record Dec. 4 to Apr. 18 (stage-discharge re 

to May 16; discharge computed on basis of 2 

stations on nearby streams.

Mar.

17

Apr.

21

20 

18 

19 

19

22 

26 

29 

27 

29

31 

35 

39 

37 

45

* 50 

60 

60 

*80 

95

95 

115 

120 

130 

120

95 

100 

95 

90 

85

Secondfoot-days

790 

665 

527

30,056

465 

392 

527 

1,807 

7,839 

18,580 

9,968 

2,751 

1,416

45,727

May

80 

75 

70 

66 

64

64 

62 

60 

60 

62

*65 

90 

110 

140 

170

205

233 

258 

228 

218

242 

342

431 

512 

521

473 

521 

620 

494 

585 

718

Maximum

40 

29

740

130 

718 

934 

625 

149 

69

934

June

680 

610 

382 

382 

570

784 

802 

485 

396 

372

403 

620 

675 

762 

790

826 

934 

670 

660 

625

645 

752 

691 

680 

713

512 

545 

540 

494 

580

July

585 

625 

605 

550 

526

503 

465 

400 

417 

417

477 

382 

321 

298 

272

255 

240 

226 

214 

205

194 

190 

184 

176 

176

170 

170 

166 

207 

190 

162

Aug.

149 

140 

134 

129 

125

112 

108 

105 

102 

97

94 

105 

108 

102 

92

86 

78 

77 

76 

74

71 

67 

66 

64 

61

58 

57 

57 

57 

52 

48

Minimum Mean

15 25.5 

18 22.2 

17.0

82.3

15.0 

14.0 

17.0 

18 60.2 

60 253 

372 619 

162 322 

48 88 . 7 

37 47.2

125

Sept.

45 

44 

43 

41 

39

37 

38 

41 

40 

57

69 

55 

48 

49 

57

50 

44 

42 

41 

48

54 

51 

52 

51 

47

44 

43 

41 

50 

55

Hunoff In 

acre-feet

1,570 

1,320 

1,050

59 , 630

922 

778 

1,050 

3,580 

15,550 

36,850 

19,770 

5,460 

2,810

90,710

7 (2 a.m.) 958 sec. -ft.; June 17 (3 a.m.) 1.18O sec.- 

2 (7 a.m.) 735 sec. -ft.; July 11 (5 a.m.) 540 sec.-rt. 

3 day. 

y ice Mov, 11 to Dec. 3, Apr. 19-27. No gage-height 

lation affected by ice during most of period) , Apr. 28 

discharge measurements, weather records, and records for
GREEN RIVER BASIN 205

Little Sandy Creek near Elkhorn, Wyo.

Location. Water-stage recorder, lat. 42°32 ! 

HT;7 miles northeast of Elkhorn.

long. 109°13', in sec. 35, T. 30 N., R. 104

Drainage area. 20.9 square miles.

Records available. July 1939 to September 1950 (no winter records 1942-45).

Extremes. Maximum discharge during year, 202 second-feet June 17 (gage height, 3.66 

reet); minimum daily recorded, 3.2 second-feet Oct. 4, 5.

1939-50: Maximum discharge, 234 second-feet June 9, 1947; maximum gage height, 4.25 

feet June 26, 1944;-minimum discharge observed, 0.9 second-foot Jan. 4, 1940 (discharge 

measurement), but may have been less during period of ice effect.

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

which are poor. Continental Divide ditch diverts water to North Platte River Basin 

(Lander Creek). Two other small diversions above station.

Discharge, In second-feet, water year October 1949 to September 195O

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

Oct.

3.7 

3.6 

3.4 

3.2 

3.2

3.4 

4.4 

4.8 

5.0 

4.8

4.4 

4.6 

5.4 

5.2 

4.8

5.2 

5". 8 

7.4 

7.6 

7.4

7.6 

8.6 

8.9 

7.6 

7.0

6.8 

6.0 

5.6 

5.2 

4.8 

6.2

Nov.

6.4 

6.4 

6.6 

7.2 

6.2

6.6 

6.8 

*5.2 

5.4 

b5.4

bS.O 

bS.O 

bS.O 

bS.O 

bS.O

5.5 

6.0 

6.0 

6.0 

6.0

5.5 

5.5 

6.0 

6.2 

6.5

6.5 

6.5 

6.2 

6.0 

5.5

Dec.

(*) 

5.5

Jan.

5.0

Feb.

4.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mnv

June 

July 

Augu 

Sept

Wa

lendar year 194 

ary

ter year 1949-50 .......................

Mar.

5.0

Apr.

5.4 

5.2 

5.4 

5.4 

5.8

6.O 

6.2 

6.6 

6.6 

6.8

7.0 

7.2 

7.6 

8.0 

8.O

8.5 

9.5 

10 

*b!2 

613

613 

b!4 

b!6 

19 

17

14 

13 

13 

13 

12

Secondfoot -days

171.6 

177.1 

170.5

7,995.5

155.0 

134.4 

155.0 

294.2 

1,410 

3,949 

3,374 

862 

458

11,310.8

May

11 

11 

11 

10 

10

1O 

10 

10 

10 

11

13 

16 

25 

35 

48

54 

63 

63 

54 

46

52 

78 

91 

91 

82

70 

81 

87 

74 

87 

96

Maximum

8.9 

7.2

208

19 

96 

194 

179 

48 

20

194

June

94 

87 

62 

66 

88

110 

122 

119 

105 

94

98 

118 

128 

142 

156

167 

194 

173 

154 

152

154 

166 

164 

158 

161

143 

139 

140 

139 

156

Minimum

July

168 

179 

179 

167 

166

161 

149 

129 

132 

145

150 

138 

122 

115 

107

100 

94 

81 

81 

75

72 

74 

72 

68 

68

65 

68 

63 

65 

64 

57

3.2 

5.0

-

5.2 

10 

62 

57 

18 

13

-

Aug.

48 

44 

43 

40 

38

37 

34 

33 

31 

29

29 

29 

29 

27 

27

25 

25 

23 

23 

22

22" 

22 

21 

20 

20

21 

22 

21 

20 

19 

18

Mean

5.54 

5.90 

5.5

21.9

5.0 

4.8 

5.0 

9.81 

45.5 

- 132 

109 

27.8 

15.3

31.0

Sept.

n

17 

16 

14 

14

13 

13 

14 

14 

19

20 

18 

17 

18 

19

16 

15 

14 

14 

14

14 

13 

14 

14 

14

14 

13 

13 

17 

16

Runoff In 

acre-feet

340 

351 

338

15,860

307 

267 

307 

584 

2,800 

7,830 

6,690 

1,710 

908

22,430

Peak discharge (base, 120 sec.-ft.). June 7 (2 a.m.) 143 sec.-ft.; June 17 (10 a.m.) 202 sec. -ft. ; 

July 2 (10 a.mT) 190 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 16 to Apr. 18 (stage-discharge relation affected by ice during 

most of period), Apr. 24 to May 11; discharge computed on basis of 1 discharge measurement, weather 

records, and records for stations on nearby streams.
206 WEEN RIVER BASIN

Blacks Pork near Millburne, Wye.

Location. Water-stage recorder, lat. 41°03', long, 110°34", In sec. 35, T. 13 N., R. 117 

 W., 3 miles downstream from Little West Pork, 4j miles north of Utah-Wyoming State 

line, and 15 miles southwest of Millburne.

Drainage area. 156 square miles.

Records available. July 1939 to" September 1950 (no winter records 1942-45).

Extremes . Maximum discharge during year, 1,220 second-feet June 1 (gage height, 3.01 

feet ) , from rating curve extended above 830 second-feet; minimum not determined, 

occurred during periods of ice effect.

1939-50: Maximum discharge, 1,960 second-feet June 26, 1944 (gage height, 3.46 

feet, site and datum then In use) , from rating curve extended above 1,000 second-feet; 

minimum not determined, occurred during periods of ice effect or no gage-height record.

Remarks. Records good except those for periods of Ice effect, which are poor, 

version above station.

Revisions (water years). W 929: 1940.

No diDlscharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

49 

47 

43 

41 

36

4S 

50 

47 

49 

46

44 

55 

74 

66 

52

54 

54 

61 

58 

51

58 

58 

46 

41 

42

43 

43 

39 

43 

41 

35

Mov.

37 

38 

38 

38 

37

37 

37 

40 

37 

38

37 

32 

34 

42 

42

 41 

4O 

36 

36 

31

31 

31 

31 

30 

30

29 

29 

28 

25 

22

Dec.

0 

18

Jan.

20

Feb.

22

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Aprl 

Mflv

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

1. ......................................

ter year 1949-50 .......................

Mar.

25 

24 

23 

24 

25

25 

25 

26 

25 

26

26 

26 

25 

25 

26

28 

3O 

32 

33 

 32

32 

31 

33 

SO 

31

31 

32 

36 

37 

34 

29

Apr.

23 

27 

27 

25 

25

23 

30 

33 

34 

32

34 

35 

38 

39 

38

36 

46 

50 

50 

58

74 

97 

126 

140 

136

143 

156 

140 

116 

100

Secondroot-days

1,498 

1.O34 

55B

53,426

620 

616 

837 

1,941 

11,468 

25,194 

10,313 

3,022 

1,894

59,045

nay

1OO 

1OO 

97 

91 

79

74 

65 

61 

60 

60

64 

74 

90 

130 

1S8

258 

340 

375 

365 

390

469 

638 

771 

862 

820

666 

729 

799 

750 

883 

1,020

HaxlBun

74 

42

1,110

37 

156 

1,020 

1,O60 

622 

15S 

89

1,060

June

1,060 

995 

701 

624 

757

980 

1,020 

701 

617 

742

940 

1,020 

931 

958 

967

967 

994 

949 

922 

8S6

904 

895 

850 

S14 

7O6

646 

662 

654 

67O 

662

July

622 

569 

541 

502 

502

478 

454 

508 

454 

400

4O6 

375 

350 

328 

305

282 

274 

264 

248 

244

22S 

210 

2OO 

186 

172

164 

213 

223 

244 

193 

169

Aug.

158 

151 

146 

141 

134

125 

121 

119 

116 

108

121 

114 

HO 

110 

1O4

92 

89 

84 

34 

S3

83 

80 

68 

64 

62

61 

6O 

60 

59 

58 

57

Minium* Mean

35 48.3 

22 34.5 

18

146

2O 

22 

23 28.6 

25 64, 7 

60 37O 

617 S40 

164 333 

57 97.5 

51 63.1

162

Sept.

57 

56 

55 

55 

54

55 

6O 

60 

64 

67

34 

39 

69 

67 

63

64 

65 

60 

60 

74

77 

69 

67 

69 

61

58 

54 

51 

53 

52

Runoff In 

acre-feet

2,970 

2,050 

1,110

106,000

1,230 

1,220 

1,760 

3,850 

22.75O 

49,970 

20,46O 

5,990 

3,760

117,100

scharge (base, 1.100 31 

12 (12:3O a.m.J 1,210

sec.-ft.). June 1 (9 p.m.) 1,220 sec.-ft.j June 7 (1 a.m.) 1,20O sec.-

ft.; June 12 (12:30f "a.a".y~T,ZlO sec.-ft.

» Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 23 to Bar. 19, Apr. 4, 5r
GREEN RIVER BASIN 207

Blacks Fork near Urie, Wyo.

Location.--Water-stage recorder, lat. 41°21', long. 110°20', in sec. 24, T. 16 N., R. 115 

W., 2 miles downstream from Quartz Creek and Zj miles north of Urie.

Drainage area. 261 square miles.

Records available. August 1913 to September 1924 (no winter records), October 1937 to 

September 195U.

Average discharge.--13 years (1937-50), 56.8 second-feet.

Extremes.--Maximum discharge during year, 920 second-feet June 2 (gage height, 5.93 feet), 

from rating curve extended above 600 second-feet; minimum daily, 2.5 second-feet Sept.

2.

1913-24, 1937-50: Maximum discharge observed, 2,680 second-feet June 20, 1917 (gage 

height, 4.72 feet, site and datum then'in use); minimum daily, 0.2 second-foot Sept. 2,

3. 1939.

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

which are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 195O

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 

50 

51

Oct.

12 

12 

12

11 

7.8

10 

19 

23 

24 

24

26 

31 

35 

33 

23

20 

18 

21 

40 

32

28 

34 

39 

34 

33

27 

27 

26 

22 

22 

20

Nov.

18 

14 

10

11 

11

11 

11 

9.6 

9.6 

11

11 

8.8 

8.3 

8.3 

8.3

9.2

8.3 

8.3 

7.8 

7.4

7.4 

7.4

7.4 

7.0 

7.8

8.3 

9.6 

9.6 

10 

9.2

Dec.

8.8 

7.4 

9.2

13

14

15 

14 

*12 

14 

14

15 

15 

16 

16 

16

17 

18 

18 

19 

19

19 

20 

21 

23 

25

25 

26 

29 

33 

34 

32

Jan.

34 

31

26 

26 

*24

24 

25 

26 

26 

27

28 

28 

28 

27 

28

28 

30 

32 

34 

35

37 

38 

38 

37 

36

37

39 

39 

39 

37 

34

Feb.

32 

*32 

33

33 

35

36 

36 

33 

32

31

32 

32 

34 

34 

34

34 

33 

32 

31 

31

32 

32 

33 

34 

34

34 

34 

32

Month

Octo 

Hove

Decs

Ca

Janu 

Febr 

mrc 

Aprl 

M«y.

June 

July 

Augu 

Sept

Ha

lendar year 194

ter year 1949-50 .......................

Mar.

31 

29 

30 

30 

30

30 

28 

27 

27

27

27 

27 

*26 

27 

28

30 

32 

35 

29 

40

42 

49 

56 

63 

66

56 

52 

54 

56 

50 

75

Apr.

95 

125 

125 

92 

*88

95

130 

165 

119 

122

109 

120 

141 

143 

130

141 

158 

137 

122 

1O9

109 

92 

80 

75 

74

71 

75 

81 

61 

48

Seeondfoot-days

745.8 

285.6 

577.4

15,611.7

978 

925 

1,209 

3,232 

7,280 

12,733 

1,504 

349.6 

295.2

30,114.6

May

40 

42 

67 

70 

66

76 

79 

76 

79 

67

83 

76 

54 

51 

67

104 

186 

287 

278 

278

321 

406 

440 

629 

763

485 

334 

392 

340 

376 

668

Maximum

40 

18 

34

778

39 

36 

75 

165 

763 

798 

120 

22 

19

798

June

742 

798 

614 

386 

384

485 

668 

539 

303 

276

368 

536 

48O 

472 

494

524 

539 

506 

488 

445

404 

448 

415 

370 

301

214 

160 

127 

125 

122

July

120 

113 

97 

90 

75

70 

76 

78 

80 

72

74 

56 

48 

37 

29

28 

27 

25 

23

21

19 

17 

20 

18 

16

16 

18 

30 

51 

35 

25

Minimum

7.8 

7.0 

7.4

4.5

24 

31 

26 

48 

40 

122 

16 

4.2 

2.5

2.5

Aug.

22 

19 

17

16 

18

16 

15 

14 

13 

13

14 

14 

14 

14 

12

11 

11 

9.6 

9.2 

9.6

10 

10 

7.8 

5.8 

5.8

4.2 

4.8 s.2

5.2 

5.2 

4.2

Mean

24.1 

9.52 

16.6

42.8

31.5 

33.0 

39.0 

106 

235 

424 

48.5 

11.3 

9.84

82.5

Sept.

3.2 

2.5 

3.0 

3.5 

3.5

3.2 

3.2 

3.2 

3.0 

5.8

12 

10 

9.2 

7.8 

7.8

8.3

11 

10 

10 

14

16 

16 

17 

18 

19

16 

14 

14 

14 

17

Runoff In 

acre-feet

1,480 

566 

1,150

i 30,970

1,940 

1,830 

2,400 

6,410 

14,440 

25,260 

2,980 

693 

586

59,740

Peak discharge (base. 450 sec.-ft.).--May 25 (12 m.) 914 sec.-ft.; June 2 (3 p.m.) 920 sec.-ft.j 

June 7 (5 p.m.) 826 sec.-ft.

* Winter discharge measurement made on this day.

Hpte. Stage-discharge relation affected by Ice Dec. 10 to Jan. 4, Mar. 13-23, 28. Ho gage-height 

record" Jan. 5 to Mar. 12 (stage-discharge relation affected by Ice during entire period), July 13- 

20; discharge computed on basis of 2 discharge measurements, recorded range In stage, weather records, and records for nearby stations.
208 GREEN RIVER BASIN

Blacks Fork near Lyman, Wyo.

Location.--Water-stage recorder, lat. 41°27', long. 110°10', in sec. 21, T. 17 N., R. 113 

w., 500 feet downstream,from bridge on U. S. Highway 30 S, 4 miles downstream from 

Cottonwood Creek, and 12 miles northeast of Lyman.

Drainage area.--821 square miles.

Records available.--October 1937 to September 1940, October 1941 to September 1950.

Average discharge.--12 years, 133 second-feet.

Extremes.--Maximum discharge during year, 1,800 second-feet June 3, from rating curve extended above 1,300 second-feet; maximum gage height, 6.15 feet Mar. 5 (ice jam); minimum daily discharge, 8.0 second-feet Sept. 4-7.

1937-40, 1941-50: Maximum discharge, 2,390 second-feet June 12, 1947 (gage height, 

6.58 feet), from rating curve extended above 1,400 second-feet; no flow Aug. 8, 15-22, 

1940.

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

which are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

2 

4 

5

6 

7 

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 

18 

18 

18 

18

18 

34 

68 

98 

112

75 

92 

162 

112 

84

67 

58 

60 

125 

98

85 

90 

114 

102 

95

86 

82 

78 

72 . 

64 

56

Nov.

50 

45 

48 

49 

49

49 

45 

45 

*45 

49

54 

52 

52 

52 

51

53 

54 

53 

53 

52

48 

44 

50 

55 

53

50 

43 

44 

45 

43

Dec.

33

27 

38 

43

*39

40 

40 

41 

41 

28

26 

27 

28 

28 

27

28 

29 

31 

31

30

32 

34 

35 

32

31

31 

34 

39 

37 

38 

39

Jan.

36 

31 

29 

30 

*31

32 

32 

34 

36 

37

38 

39 

39 

41 

42

45 

48 

52 

56

60

66 

68 

70 

68 

62

66 

68 

70 

72 

72 

68

Feb.

62

60 

*62 

66 

70

72 

72 

70 

66 

66

68 

70 

74 

76 

76

74 

74 

74 

76 

76

70 

74 

78 

82 

84

84 

84

80

Month

ooto 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 .......................

Peak discharge (base, 900 sec. -ft.). May

Mar.

76 

76 

80 

84 

96

94 

92 

96 

96 

96

94 

*92 

86 

88 

94

100 

110 

120 

125

130

135 

150 

160 

170

170

160 

150 

150 

160 

160 

150

Apr.

160 

170 

185 

185 

165

*195 

252 

279 

288 

222

218 

202 

215 

238 

258

238 

225 

240 

238 

218

225 

232 

264 

270 

252

230 

205 

220 

255 

228

Secondfoot -days

2,277 

1,475 

1,037

47,538.8

1,538 

2,040 

3,640 

6,772 

18,223 

25,263 

3,998 

1,144 

887.6

68,294.6

25 (7 p.m.)

May

202 

195 

264 

334 

327

393 

386 

390 

400 

404

393 

386 

365 

327 

327

354 

428 

548 

625 

552

595 

730 

864 

1,090 

1,380

1,340 

924 

822 

942 

876 

1,060

Maximum

162 

55 

43

1,300

72 

84 

170 

288 

1,380 

1,740 

246 

69 

87

1,740

June

1,450 

1,430 

1,740 

1,360 

960

870 

1,150 

1,420 

984 

698

692 

924 

1,010 

924 

906

906 

912 

828 

798 

758

665 

635 

630 

556 

434

416 

365 

291 

255 

246

Minimum

July

222 

210 

190 

185 

202

180 

185 

246 

240 

220

225 

202 

152

118 

87

68 

61 

62 

64 

63

57 

51 

50 

55 

53

48 

50 

62 

180 

125 

85

16 

43 

26

7.2

29 

60 

76 

160 

195 

246 

48 

11 

8.0

8.0

Aug.

69 

66 

58 

62 

62

57 

52 

49 

49 

44

45 

50 

49 

49 

45

40 

35 

33 

28 

25

E6 

23

20 

17 

15

15 

14 

12 

12 

12 

11

Mean

73.5 

49.2 

33.5

130

49.6 

72.9 

117 

226 

588 

842 

129 

36.9 

29.6

187

Sept.

12 

9.2 

8.4 

8.0 

8.0

8.0

8.0 

17 

16

13

75 

87 

41 

30 

25

23 

24 

25 

22 

58

54 

39 

37 

39 

41

38 

33 

30 

29 

30

Runoff In 

acre-feet

4,520 

2,930 

2,060

94,280

3,050 

4,050 

7,220 

13,430 

36,140 

50,110 

7,930 

2,270 

1,760

135,500

1,500 sec. -ft.; June 3 (1 p.m.) 1,800 sec.-

ft.; June 8 (7:30 a.m.) 1,480 BBC.-ft.; June 13 (12:30 a.m.) 1,110 sec.-ft.

* Winter discharge measurement made on_this day.

Note.--Stage-discharge relation affected by Ice Dec. 5 to Jan. 9. No gage-height record Oct. 30 

to Nov. 8, Jan. 10 to Apr. 5 (stage-discharge relation affected by Ice during most of period); discharge computed on basis of 2 discharge measurements, recorded range In stage, weather records, and 

records for nearby stations.
GREEN RIVER BASIN 809

Blacks Pork near Green River, Wyo.

Location.--Water-stage recorder, lat. 41°23', long. 109°37', in sec. 8, T. 16 N., R. 108 

w., 200 feet dovmstream from Dry Creek, 12 miles upstream from mouth, and 12.5 miles 

southwest of Green River.

Drainage area.--3,670 square miies.

Records available. August 1947 to September 1950.

Extremes.--Maximum discharge during year, 3,840 second-feet May 27; maximum gage height, 

13.66 feet Feb. 28 (ice.jam), from floodmark; minimum daily discharge, 4.7 second-feet 

Sept. 9.

1947-50: Maximum discharge, 4,290 second-feet Mar. 26, 1948; maximum gage height, 

that of Feb. 28, 1950; 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, 

which are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

8 

3 

4 

5

6 

7

8 

9 

10-

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

?6 

27 

28 

29 

30 

31

Oct.

10 

10

11 11

10

11

16 

31 

73 

131

174 

316 

485 

362 

284

202 

154

154 

246 

192

205 

236 

222 

274 

348

302 

270 

236 

202 

168 

131

Nov.

120

117 

126 

131 

123

103 

88 

90 

98 

105

105 

105 

100 

92 

94

96

100 

98 

98 

101

98 

85 

78 

78 

66

58 

61 

70 

98 

80

Dec.

*68 

40 

37 

34 

33

35 

36 

30 

24 

20

18 

19 

19

18 

17

17 

19 

21 

23 

22

*21 

23 

25 

27 

25

26 

28 

28 

30 

32 

32

Jan.

32 

30 

*29 

26 

25

29 

28 

26 

30 

28

27 

29 

30 

29 

28

29 

30 

31 

32 

36

37 

40 

100 

*190 

160

95 

100 

70 

40 

25 

28

Feb.

22 

17 

14 

15 

16

17 

16 

13

11 

11

12 

11 

11 

12 

*12

12

*13

14 

15 

18

17 

17 

20 

35 

120

400 

950 

2,200

Month

Octo 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year. 1949

ter year 1949-50 .......................

Mar.

1,900 

1,600 

1,300 

1,100 

1,300

1,200 

*1,110 

950 

800 

700

640 

580 

490 

460 

450

440 

460 

510 

520 

540

680 

540 

460 

430 

432

490 

369 

334 

295 

290 

330

Apr.

8OO 

1,500 

1,360 

1,280 

926

681 

624

600 

772 

1,150

1,000 

800 

758 

674 

800

940 

898 

988 

1,180 

1,320

1,270 

1,250 

1,360 

1,530 

1,660

1,730 

1,830 

1,730 

1,480 

1,450

Secondfoot-days

5,477 

2,862 

847

119,988.5

1,469 

4,041 

21,700 

34,341 

64,096 

66,726 

14,059 

4,125 

2,978.9

222,721.9

May

1,280 

1,040 

996 

1,100 

1,390

1,470 

1,460 

1,290 

1,540 

1,630

1,540 

1,380 

1,280 

1,330 

1,450

1,550 

1,740 

1,990 

2,390 

2,660

2,840 

2,900 

2,840 

2,820 

3,020

3,510 

3,690 

3,200 

3,030 

2,960 

2,760

Maximum

485 

131 

68

2,440

190 

2,200 

1,900 

1,830 

3,690 

3,730 

905 

316 

450

3,730

June

2,910 

3,360 

3,500 

3,730 

3,470

2,960 

2,790 

2,920 

2,970 

2,390

2,170 

2,270 

2,420 

2,280 

2,030

1,960 

1,930 

1,940 

1,940 

1,920

1,900 

1,850 

1,740 

1,660 

1,550

1,430 

1,340 

1,260 

1,140 

996

July

905 

849 

793 

751 

702

660 

654 

624

612 

618

612 

575 

550 

515 

450

397 

354 

326 

292 

267

253 

242 

232 

225 

222

212 

212 

202 

215 

232 

306

Aug.

316 

260 

228 

215 

195

186 

180 

171 

162 

154

154 

154 

151 

142 

145

137

128 

117 

109 

101

96 

88 

80 

75 

73

70 

63 

54 

49 

40 

32

Minimum Mean

10 177 

58 95.4 

17 27.3

1.6 329

25 47.4 

11 144 

29O 7OO 

600 1,145 

996 2,068 

996 2,224 

202 454 

32 133 

4.7 99.3

4.7 610

Sept.

25 

21 

19 

16 

15

12 

10 

5.8 

4.7 

9.4

346 

80 

42 

114 

103

73 

56 

43 

40 

422

450 242' 

148 

117 

109

101 

96 

93 

88 

78

Runoff in 

acre-feet

10,860 

5,680 

1,680

238,000

2,910 

8,020 

43,040 

68,110 

127,100 

132,300 

27,890 

8,180 

5,910

441,700

Peak discharge (base, 2,200 sec. -ft.). Feb. 28 (time and discharge unknown); May 27 (7 a.m.) 3,840

sec. -ft. ; June 4 (6 p.m.) 3,750 sec. -ft.

Winter discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Dec. 3-9, Dec. 12 to Jan. 7, Jan. 18 to Feb. .27. 

No gage-height record Nov. 9-17, Jan. 8-17, Feb. 28 to Mar. 24 (stage-discharge relation affected by 

ice during most of periods), Mar. 30 to Apr. 2; discharge computed on basis of 1 discharge measurement, weather records, recorded range in stage, and records for nearby stations.
210 GREEN RIVER BASIN

East Pork of Smith Fork near Robertson, Wyo.

Location.--Water-stage recorder, lat. 41°03, long. 110°24', in NE£ sec. S.T. 12 N., R. 115

 W., 1 mile upstream from Gilbert Creek and 11 miles southeast of Robertson.

Drainage area. 53.0 square miles.

Records available.--July 1939 to September 1950 (no winder records 1942-45).

Extremes. Maximum discharge during year,"425 second-feet June 2, 7 (gage height, 2.35

 feet), from rating curve extended above 310 second-feet; no flow part of each day Apr. 

17-22, 24, 25; minimum gage height, -0.70 foot Apr. 22.

1939-50: Maximum discharge, 644 second-feet June 26, 1944 (gage height, 3.21 feet), 

from rating curve extended above 370 second-feet; no flow part of each day Apr. 17-22, 

24, 25, 1950; minimum gage height, -0.70 foot Apr. 22, 1950.

Remarks.--Records good above 50 second-feet and fair below except those for periods of ice

 effect or no gage-height record, which are poor. No diversion above station.

Revisions. W 979: Drainage area.

, In econd-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

15

14 

14 

14 

13

15 

17 

17 

18 

17

18 

20 

26 

23 

20

19 

18 

20 

23 

20

22 

25 

26

23 

20

20 

18 

17 

18 

16 

17

Nov.

16 

16 

16 

16 

16

16 

17 

16 

15 

14

14 

14 

14 

14 

»14

13 

13 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

13 

10 

12

Dec.

(») 

8.0

Jan.

5.5

Feb.

5.0

Month

Octo 

Novel

Dee«

Ca.

Janu 

Pebr 

Hare 

Aprl 

Hay.

June 

July 

Augu 

Sept

Ha

 ber. .........-..,-..--------.--.----.---

lendar year 1949 

apy

1.......................................

 ber

ter year 1949-50 .......................

Peak discharge (base, 300 sec. -ft.). June

Mar.

4.6 

4.6 

4.6 

4.6 

4.6

4.4 

4.4 

4.4 

4.4 

4.4

4.4 

4.4 

4.4 

4.4 

4.4

»4.6 

4.6 

4.6 

4.6 

4.6

4.6 

4.6 

4.4 

4.4 

4.4

4.2 

4.2 

4.2 

4.4 

4.4 

4.6

Apr.

4.8 

5.2 

5.0 

5.2 

6.6

6.3 

6.9 

7.2 

7.2 

7.8

6.6 

5.2 

5.8 

8.1 

8.7

6.0 

9.4

9.8

10 

11

14 

21 

26 

15 

9.9

27 

37 

35 

28 

29

Secondfoot-dayi

583

419 

248.0

20,068.8

170.5 

140.0 

138.4 

384.7 

2,925 

7,018 

2,586 

791 

413.6

15,817.2

Hay

32 

35 

29 

25 

23

22 

21 

20 

20 

19

18 

19 

22 

29 

38

57 

72 

79 

75 

78

102 

130 

172 

234 

234

168 

168 

212 

197 

238 

337

Maximum

26 

17

560

4.6 

37 

337 

357 

159 

43 

19

357

June

333

357 

227 

172 

204

283 

353 

220 

192 

220

276 

297 

272 

276 

262

269 

266 

252 

234 

217

215 

238

215 

215 

180

152 

155 

148 

157 

161

July

MUllBUB

13 

10

-

4.2 

4.8 

18 

148 

45 

11 

9.8

-

159 

139

130 

117

ioa

ill 

110 

127 

111 

89

it 

82 

86 

84 

77

72 

71 

72 

67 

85

60 

57 

55 

52 

54

52 

56 

66 

68 

56 

45

Au«.

43 

40 

40 

37 

36

32 

31 

30 

29 

28

34

34 

30 

32 

32

30

27 

24 

22 

21

20 

17 

16 

15 

13

13 

15 

14 

13 

12 

11

18.8 

14.0 

8.0

55.0

5.5 

5.0 

4.46 

12.8 

94.4 

234 

83.4 

25.5 

13.8

43.3

Sept.

10 

10 

10 

9.8 

9.8

10 

10

11 11

12

15 

17 

14 

13 

13

13 

13 

13 

11 

16

- 19

ia

18 

18 

18

18 

17 

16 

15 

15

Runoff In 

acre-feet

1,160 

831 

492

39,820

338 

278 

275 

763 

5,800 

13,920 

5,130 

1,570 

820

31,380

2 (4 a.m.) 425 sec. -ft.) June 7 (4:30 a.m.) 425 sec^ft.J

June

* Winter discharge measurement made on this day.

Hpte. Stage-discharge relation affeoted by ice Hoy. 12-24, Dec. 1-27. Ho gage-height record Dec. 

28 to Mar. 15 (stage-discharge relation affected by ice during most of period]j discharge computed on 

bails of veather records and records for stations on nearby mtreamB.
GREEN RIVER BASIN 211

Smith Fork at Mountainview, Wyo.

Location.--Water-stage recorder, lat. 41°16', long. 110°20', in sec. 23, T. 15 N., R. 115 

W., at highway bridge in southwestern edge of Mountainview.

Drainage area. 192 square miles.

Records available. October 1941 to September 1950.

Extremes. Maximum discharge during year, 850 second-feet May 31 (gage height, 4.20 feet); 

minimum daily, 4.7 second-feet Aug. 25, 26.

1941-50: Maximum discharge, 1,060 second-feet May 20, 1948 (gage height, 4.23 feet); 

minimum daily, 2.5 second-feet Aug. 30, 1948.

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

which are poor. Many diversions above station for irrigation.

\ 

Discharge, in second-feet, Mater year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

11 

12 

11 

11 

11

12 

14 

16 

16 

16

17 

20 

25 

24 

22

19 

18 

18 

24 

24

23 

23 

24 

23 

24

23 

21 

20 

19 

19 

18

Nov.

18 

18 

17 

18 

18

18 

18 

18 

18 

18

18 

18 

17 

19 

*19

18 

18 

18 

18 

17

16 

16 

15 

16 

16

15 

14 

14 

14 

14

Dec.

13 

13 

12 

13 

14

14 

14 

*14 

13 

13

13 

13 

13 

14 

14

14 

15 

15 

16 

16

16 

17 

18 

19 

20

21 

21 

22 

23 

23 

23

Jan.

23 

23 

21 

2O 

*20

2O 

20 

20 

21 

21

22 

22 

22 

22 

21

21 

21 

22 

23 

23

23 

24 

24 

23 

23

24 

24 

24 

22 

21 

2O

Feb.

20 *19 

20 

20 

21

21 

21 

21 

21 

20

20 

21 

22 

22 

23

23 

22 

22 

22 

22

22 

23 

24 

24 

24

24 

24 

23

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Hay.

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-50 .......................

Mar.

23 

23 

24 

24 

24

24 

23 

22 

22 

23

23 

23 

*22 

22 

23

24 

25 

27 

28 

31

32 

34 

37 

41 

41

37 

39 

41 

43 

39 

52

Apr.

78 

94 

75 

64 

*56

60 

72 

83 

78 

61

61 

60 

70 

73 

68

66 

73 

82 

71 

68

78 

94 

112 

106 

86

75 

79 

93 

80 

71

Secondfoot-days

578 

509 

499

19,199.1

68O 

611 

916 

2,287 

7,669 

7,780 

81O 

324.4 

416.5

23,079. 9

Peak discharge (base, 37O sec. -ft. ). May 25 (3:3O p.m

May

70 

83 

97 

93 

86

92 

94 

99 

103 

94

97 

97 

99 

102 

117

136 

177 

220 

188 

181

2O2 

285 

382 

516 

665

530 

436 

539 

544 

544 

701

Maxinua

25 

19 

23

398

24 

24 

52 

112 

701 

701 

50 

17 

23

701

June

674 

701 

562 

339 

294

418 

562 

422 

270 

270

312 

351 

308 

287 

248

230 

203 

172 

162 

144

128 

124 

111 

104 

102

88 

71 

51 

40 

32

July

26 

34 

39 

38 

34

35 

45 

50 

50 

48

50 

36 

28 

21 

15

12 

12 

13 

14 

12

12 

12 

14 

14 

13

14 

14 

18 

35 

31 

21

Aug.

17 

16 

16 

16 

16

15 

14 

13 

11 

9.0

10 

12 

12 

12 

12

12 

1O 

1O 

8.5 

7.5

7.5 

7.0 

6.0 

5.5 

4.7

4.7 

6.5 

8.O 

9.0 

8.5 

8.0

Sept.

7.5 

7.5 

7.5 

7.5 

7.0

6.0 

5.5 

8.0 

12 

12

21 

23 

19 

16 

16

16 

14 

12 

10 

14

20 

20 

2O 

22 

20

17 

14 

14 

14 

14

"» ' "- a^ee?

11 18.6 1,150 

14 17. O 1,01O 

12 16.1 990

6.3 52.6 38,080

20 21.9 1,350 

19 21.8 1,210 

22 29.5 1,820 

56 76.2 4,540 

7O 247 15,21O 

32 259 15,430 

12 26.1 1,610 

4.7 1O.5 643 

5.5 13.9 826

4.7 63.2 45,790

.) 845 sec. -ft. s May 31 (12 ra.) 850 sec. -ft.

" winter aiscnarge measurement made on tnis day.

Note. Stage-discharge relation affected by ice Dec. 1 to Mar. 23 (no gage-height record Jan. 6 to 

Mar. 12; discharge computed on basis of 1 discharge measurement, weather records, and records tor 

stations on nparhy streams).
212 GREEN RIVER BASIN

West Fork of Smith Pork near Robertson, Wyo.

Location.--Water-stage recorder, lat. 41°01', long. 110°29', in sec. 15, T. 12 N., R. 116 

W., three-quarters of a mile downstream from Archie Creek and 13 miles southwest of 

Robertson.

Drainage area.--37.2 square miles.

Records available.--July 1939 to September 1950 (no winter records 1942-45).

Extremes.--Maximum discharge during year, 920 second-feet May 30 (gage height, 3.08 feet); 

minimum recorded, 0.9 second-foot Sept. 2 (gage height, 0.27 foot).

1939-50: Maximum discharge, that of May 30, 1950; minimum observed, 0.2 second-foot 

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.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

3.0 

2.9 

2.5 

2.2 

2.2

3.8 

7.0 

7.0 

6.7 

5.3

7.4 

7.8 

12 

10 

7.4

6.7 

7.0 

8.5 

11 

7.8

6.7 

6.7 

6.7 

6.0 

5.3

4.8 

4.6 

4.0 

5.3 

4.3 

3.5

Nov.

3.8 

3.5 

3.3 

3.5 

3.0

3.3 

3.3 

3.3 

2.8 

2.8

2.6 

2.5 

2.5 

2.5 

2.5

*2.6

2.5 

2.3 

2.2 

2.2

2.2 

2.1 

2.0 

1.9 

1.9

1.9 

2.0 

2.0 

1.9 

1.8

Dec.

(*)

1.5

Jan.

1.6

Feb.

1.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O ...............

Mar.

2.0

Apr.

2.3 

2.5 

2.5 

2.7 

3.0

2.9 

3.1 

3.5 

4.0 

4.3

*4.0 

4.0 

4.3 

6.0 

6.6

6.2 

5.6 

6.8 

8.8 

15

21 

28 

32 

36 

38

33 

30 

26 

25 

24

Secondfoot-days

186.1 

76.7 

46.5

7,620.5

49.6 

50.4 

62.0 

391.1 

3,451 

3,529 

450.8 

77.6 

98.2

8,469.0

May

20 

20 

19 

18 

18

17 

15 

17 

14 

14

14 

18 

24 

31 

42

67 

92 

97 

94 

104

134 

185 

230 

295 

227

167 

218 

254 

238 

386 

362

Maximum

12 

3.8

206

38 

386 

350 

26 

5.1 

7.4

386

June

350 

250 

145 

137 

227

305 

230 

134 

129 

159

J.79 

159 

132 

119 

106

99 

90 

74 

63 

56

55 

52 

48 

44 

39

32 

31 

29 

29 

27

July

26 

24 

24 

22 

21

21 

24 

26 

26 

21

20 

18 

15 

14 

12

11 

11 

11 

9.2 

9.2

7.4 

6.7 

6.0 

5.6 

5.6

5.1 

9.6 

12 

14 

8.1 

5.3

Minimum

2.2 

1.8

-

2.3 

14 

27 

5.1 

1.2 

1.1

-

Aug.

5.1 

4.3 

4.0 

4.0 

3.3

2.9

2.8 

2.6 

2.5 

2.4

3.3 

4.0 

3.5 

3.3 

2.9

2.8 

2.4 

1.9 

1.8

1.7

1.7 

1.6 

1.6 

1.5

1.5

1.5 

1.5 

1.5 

1.3 

1.2 

1.2

Mean

6.00 

2.56 

1.5

20.9

1.6 

1.8 

2.0 

13.0 

111 

118 

14.5 

2.50 

3.27

23.2

Sept.

1.2 

1.1 

1.1

1.3 

1.1

1.2 

1.3 

1.5 

1.6 

2.5

6.0 

5.6 

3.0 

2.6 

2.8

2.6 

2.6 

2.0 

1.9 

7.0

7.4 

7.O 

6.7 

6.0 

4.8

3.8 

3.5 

3.0 

3.0 

3.0

Runoff In 

acre-feet

369 

152 

92

15,130

98 

10O 

123 

776 

6,840 

7.0OO 

894 

154 

195

16,790

Peak discharge (base. 280 sec.-ft.).--May 24 (6 p.m.) 676 sec.-ft.; May 30 (6:30 p.m.) 920 sec.- 

ft.; June 6 (8 p.m.) 500 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 10 to Apr. 20 (no gage-height record Jan. 1 

to Mar. 17; discharge computed on basis of weather records and records for stations on nearby 

streams).
GREEN RIVER BASIN 213

Hams Pork near Frontier, Wyo.

Location.--Water-stage recorder, lat. 41°51', long. 110°33", in SW£ sec. 26, T. 22 H., R. 

lib w., 1 ? miles upstream from Willow Creek and 85 miles northwest of Frontier.

Drainage area.--298 square miles.

Records available.--May 1945 to September 1950.

Extremes. Maximum discharge during year, 2,450 second-feet May 19 (gage height, 6.74 feet); 

minimum daily, 10 second-feet Oct. 4.

1945-50: Maximum discharge, that of May 19, 1950; minimum daily, 6.0 second-feet 

Sept. 2, 1948.

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

wnicn are fair. Several small diversions above station for irrigation and domestic 

water supply for town of Kemmerer.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

11 

11 

11 

10 

12

17 

24 

23 

23 

23

46 

53 

54 

53 

52

52 

52 

53 

57 

56

56 

54

54 

54 

53

53 

53 

53 

53 

53 

52

Nov.

42 

38 

37 

*37 

37

37 

37 

37 

37 

39

38 

38 

43 

38 

37

37 

25 

24 

23 

23

24 

25 

26 

24 

24

a23 

a24 

a25 

a24 

a24

Dec.

*24 

23 

22 

20

18

19 

19 

19 

20 

21

19 

17 

18 

18 

19

19 

20 

20 

19 

18

19 

19 

20 

19 

19

19 

20 

20 

19 

18 

18

Jan.

18 

18 

17 

16 

15

*16

16 

16 

17 

17

17 

17 

18 

18 

18

19 

20 

21 

23 

24

24 

24

24 

24

21

22 

23 

23 

23 

24 

24

Feb.

*25 

25 

26 

27 

27

27 

26 

26 

27 

27

27 

28 

28 

29 

30

30 

29 

29 

28 

29

28

28 

28 

29 

51

32 

33 

32

Month

Octo 

Nove

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

wa

lendar year 1949

ter year 1949-50 .......................

Mar.

31 

30 

31 

33 

34

34 

a32 

a30 

a31 

a30

a28 

a27 

a27 

a29 

a32

a33 

*a33 

33 

33 

32

32 

32 

33 

34 

34

33 

31 

31 

31 

35 

40

Apr.

45 

60 

*43 

38 

35

32 

50 

85 

85 

75

70 

90 

120 

174 

190

250 

394 

618 

739 

766

1,060 

*1,250 

1,640 

1,460 

1,130

880 

816 

802 

670 

530

Secondfoot-days

1,281 

947 

602

50,549

617 

791 

989 

14,197 

36,015 

31,791 

8,447 

2,410 

960

99,047

May

482 

482 

478 

454 

378

349 

338 

338 

328 

318

346 

474 

730 

1,020 

1,430

1,740 

1,870 

2,210 

2,250 

1,65O

1,340 

1,430 

1,750 

2,110 

2,160

1,920 

1,560 

1,470 

1,590 

1,560 

1,460

Maximum

57 

43 

24

1,000

24 

33 

40 

1,640 

2,250 

1,690 

566 

99 

42

2,250

Peak discharge (base, 1,300 sec. -ft.) . Apr. 23 (1:30 p.m.) 1.9OO

June

1,560 

1,630 

1,690 

1,580 

1,290

1,120 

1,160 

1,330 

1,500 

1,250

1,060 

920 

885 

930 

955

990 

1,020 

1,060 

1,080 

1,040

965 

885 

855 

846 

832

796 

720 

654 

610 

578

July

566 

550 

530 

506 

466

430 

412 

409 

370 

346

342 

316 

280 

246 

222

207 

199 

196 

194 

189

189 

184 

149 

147 

147

144 

101 

96 

110 

103 

101

Minimum

10

23 

17

10

15 

25 

27 

32 

318 

578 

96 

42 

26

10

Aug.

99 

96 

96 

96

94

94 

94 

92 

92 

92

92 

92 

90 

90 

90

88 

86 

84 

82 

82

81 

73 

71 

64 

44

43 

43 

43 

43 

42 

42

Mean

41.3 

31.6 

19.4

138

19.9 

28.2 

31.9 

473 

1,162 

1,060 

272 

77.7 

32.0

271

sec. -ft. j May 19 (1 a

Sept.

42 

4O 

40 

40 

59

27 

26 

27 

27 

30

31 

28 

28 

28 

28

30 

30 

30 

31 

32

32 

34 

34 

32 

32

32 

32 

32 

32 

34

Runoff In 

acre -feet

2,540 

1,680 

1,190

100,300

1,220 

1,570 

1,960 

28,160 

71,430 

63,060 

16,750 

4,780 

1,900

196,400

.m.) 2,450

sec.-rt.; May Z4 (6 p.m.) 2,220 sec.-ft.j June 9 (10 a.m.) 1,540 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record (stage-discharge relation affected by Ice during part of periods); discharge 

computed on basis of 1 discharge measurement, weather records, and records for stations on nearby 

streams.

Note. Stage-discharge relation affected by Ice Dec. 2 to Mar. 6, Mar. 18 to Apr. 13.
214 GREEN RIVER BASIN

Henrys Pork near Lonetree, Wyo.'

Location. Water-stage recorder, 1-at. 41°00', long. 110°17', In SE^ sec. 20, T. 12 N , R 

114 W., at Utah-Wyoming State line, half a mile downstream from West Pork and 8 miles 

southwest of Lonetree.

Drainage area. 55.2 square miles.

Records available. April 1943 to September 1950 (no winter records 1943-45).

Extremes. Maximum discharge during year, 665 second-feet May 30 (gage height, 3.60 feet), 

rrom rating curve extended above 280 second-feet; minimum not determined, occurred 

during period of no gage-height record.

1943-50: Maximum discharge, 822 second-feet June 26, 1944 (gage height, 3.78 feet), 

from rating curve extended above 200 second-feet; 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. One diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

6 

7

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.

21 

19 

18 

18 

16

18 

20 

21 

22 

22

28 

24 

29 

26 

23

23 

23 

24 

27 

28

26 

30 

26 

25 

23

*22 

2O 

20 

2O 

19 

18

Nov.

18 

17 

17 

16 

16

16 

15 

15 

14 

13

13 

13 

14 

14 

15

15 

15 

14 

13 

12

12 

12 

12 

12 

12

12 

11 

11 

10 

10

Dec.

8

Jan.

6.5

Feb.

6

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Ha

her. ....................................

mber. ...................................

lendar year 1949 

ary

1.......................................

St......................................

ter year 1949-50 ...............

Peak discharge (base, 300 sec. -ft.). May

* Winter discharge measurement made on thl 

Note . Ho gage-height record Nov. 6 to Apr 

most of period); discharge computed on basis 

ords for nearby stations.

Mar.

6.5

Apr.

6.8 

6.6 

6.7 

7.2 

7.6

8.0 

8.3 

8.0 

7.6 

7.4

8.2 

 7.5 

8.7 

9.4 

8.4

8.7 

11 

14 

14 

14

20 

28 

29 

27 

23

22 

22 

22 

18 

19

Secondfoot-days

699 

4O9 

248

16,774.8

201.5 

168 

201.5 

408.1 

2,687 

6,575 

2,388 

586 

329.2

14,900.3

May

16 

19 

19 

18 

19

16 

18 

16 

14 

15

16 

19 

24 

31 

36

41 

51 

58 

55 

65

78 

99 

135 

188 

2O6

158 

158 

199 

192 

298 

410

Maximum

30

18

611

29 

410 

338 

158 

30 

14

410

June

338 

269 

188 

167 

182

258 

280 

196 

176 

192

213 

241 

241 

241 

238

238 

238 

238 

234 

224

238 

241 

230 

227 

188

179 

176 

17O 

170 

164

July

158 

145 

140 

130 

122

120 

118 

124 

112 

99

96 

88 

82 

76 

69

65 

61 

61 

54

49

44 

41 

39 

37 

36

35 

31 

44 

43 

36 

33

Aug.

30 

29 

28 

27 

25

24 

23 

22 

20 

20

26 

23 

22 

21 

19

IS 

18 

16 

15 

15

14 

14 

14 

14 

14

14 

13 

13 

12 

12 

11

Minimum Mean

16 22.5 

1O 13 . 6 

8.0

46.0

6.5 

6.0 

6.5 

6.6 13.6 

14 86.7 

164 219 

31 77.0 

11 18.9 

9.0 11.0

40.8

Sept.

11 

11 

9.4 

9.0 

9.0

9.4 

9.8 

9.8 

10 

11

13 

13 

11 

11 

11

10 

10 

9.8 

9.8 

13

14 

13 

13 

14 

13

11 

11 

10 

9.8 

9.4

Runoff In 

acre-feet

1,390 

811 

492

33,280

400 

333 

400 

809 

5,330 

13,040 

4,740 

1,160 

653

29,560

50 (9:30 p.m.) 665 sec. -ft.; June 6 (11 p.m.) 58O sec.-

B day. 

. 11 (stage-discharge relation affected by Ice during 

of 1 discharge measurement, weather records, and rec-
GREEN RIVER BASIN 215

Henrys Pork near Burntfork, Wyo.

Location. Water-stage recorder, lat. 41°02', long. 110°03 I , In sec. 4, T. 12 N., R. 112 

w., at Ulnta-Sweetwater county line, 2^ miles upstream from Burnt Pork and 2^ miles 

west of Burntfork School.

Drainage area. 242 square miles. >

Records avallatiH. October 1943 to September 1950.

Extremes. Maximum discharge during year, 578 second-feet June 2 (gage height, 3.53 feet); 

minimum dally, 7.6 second-feet Sept. 6,7.

1943-50: Maximum discharge, 1,190 second-feet June 19, 1949, from rating curve extended above 530 second-feet; minimum dally, 3.5 second-feet Sept. 16, 1948.

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

wmcn are poor. Many small diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7 

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.

22 

22 

20 

19 

18

17 

20 

25 

25 

24

24 

47 

62 

45 

30

29 

21 

22

38 

39

38 

34 

36 

38 

47

47 

38 

33 

33 

31 

26

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

M&V

June 

July 

Augu 

Sept

Ha

Hov.

28 

25 

24 

22 

22

22 

21 

21 

21 

21

19

15 

17 

19 

19

18 

19 

19 

19 

19

17 

15 

15 

19 

19

18 

17 

18 

19 

15

Dec.

14 

15 

15 

14 

14

*17 

14 

15 

16 

15

15 

16 

16 

16 

17

18 

19 

20 

20 

19

21 

23 

23 

22 

21

23 

24 

25 

25 

24 

24

Jan.

23 

22 

*22 

21 

22

22 

21 

22 

22 

22

21 

21 

21 

21 

21

22 

22 

24 

25 

27

29 

28 

27 

*26 

25

23 

24 

25 

25 

24 

23

Feb.

22 

21 

21 

22 

2E

21 

21 

22 

22 

22

22 

22 

*22 

22 

22

22 

22 

22 

23 

23

22 

23 

24 

25 

27

29 

31 

30

Month

ber. ....................................

mber. ...........-------- ---------

lendar year -1949

ter year 1949-5O .......................

Peak discharge (base, 34O sec. -ft.). June

Mar.

29 

29 

29 

31 

31

30 

31 

32 

31 

*31

30 

30 

30 

29 

28

30 

35 

42 

39 

36

34 

38 

38 

42 

45

38 

34 

31 

30 

31 

37

Apr.

50 

67 

71 

56 

56

*75 

100 

80 

52 

36

36 

34 

41 

47 

39

36 

38 

45 

36 

36

41 

48 

52 

45 

41

41 

34 

45 

45 

39

Secondfoot -days

970 

582 

580

28,618.7

723 

649 

1,031 

1,462 

3,012 

6,696 

2-, 348 

600 

515.6

19,168.6

May

45 

45 

52 

52

45

48 

43 

54 

82 

100

100 

69 

38 

34 

36

39 

45 

67 

58 

69

86 

97 

130 

162 

215

193 

162 

164 

172 

196 

314

Maximum

62 

28 

25

911

29 

31 

45 

100 

314 

452 

193 

30 

28

452

June

368 

452 

338 

245 

217

263 

363 

278 

206

204

240 

284 

263 

240 

215

215 

209 

201 

198 

188

188 

183 

180 

170 

157

140 

123 

120 

123 

125

Minimum

July

125 

123 

118 

109 

104

113 

150 

193 

152 

142

167 

95 

80 

62

47

36 

36 

48 

39 

34

29 

25 

25 

24 

21

21 

25 

43 

69 

60 

33

17 

15

14

9.0

21 

21 

28 

34 

34 

120 

21 

11 

7.6

7.6

2 (1:30 p.m.) 578 sec'.-ft.j June

Aug.

28 

26 

26 

26 

25

21 

20 

20 

20 

21

24 

30 

30 

30 

26

22 

22 

20 

16 

14

13 

13 

13 

12 

11

11 

13 

12 

12 

12 

11

Mean

31.3 

19.4 

18.7

78.4

23.3 

23.2 

33.3 

48.7 

97.2 

223 

75.7 

19.4 

.17.2

52.5

7 (2 p.m.)

Sept.

11 

9.4 

9.4 

8.8 

8.2

7.6 

7.6 

8.2 

9.4 

14

28 

28 

20 

17 

16

15 

16

15 

15 

29

26 

25 

25 

24 

24

24 

19 

19 

19 

18

Runoff In 

acre-feet

1,920 

1,150 

1,150

56,740

1,430 

1,290 

2,040 

2,900 

5,970 

13,280 

4,660 

1,190 

1,020

38,000

536 sec. -ft

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected by Ice Dec. 4, 5, Dec. 11 to Mar. 8 (no gage-height record, 

Dec. 12 to Jan. 17, Jan. 29 to Feb. 12; discharge computed on basis of 1 discharge measurement, 

weather records, and records for nearby stations), Mar. 11 to Apr. 2.

207364 O - 52 - 15
216 GREEN RIVER BASIN

Henrys Fork at Linwood, Utah

Location.--Water-stage recorder, lat. 41°00', long. 109°39', in sec. 23, T. 12 N., R. 109 

W., 300 feet north of Wyoming-Utah State line at Linwood. Datum of gage is 5,995.24 feet 

above mean sea level, adjustment of 1912.

Drainage area. 531 square miles.

Records available. October 1928 to September 1950.

Average discharge. 22 years, 80.0 second-feet.

Extremes. Maximum discharge during year, 1,020 second-feet June 7, from rating curve extended above 600 second-feet; maximum gage height, 3.50 feet Feb. 26 (backwater from 

ice); minimum daily discharge, 11 second-feet Sept. 5-7.

1928-50: Maximum discharge, 6,750 second-feet Aug. 3, 1936 (gage height, 7.19 feet, 

from floodmarks, site and datum then in use), by slope-area method; no flow several 

days in 1934, 1935, 1939, 1940.

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

which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

33 

24 

22

17 

18

18 

24 

39 

53 

55

62

94 

126 

123 

98

79 

74 

72 

102

102

106 

96 

104

102

110

117 

108 

100 

96 

92 

77

Nov.

74 

74 

70 

69 

67

66 

67 

67 

67 

67

67 

59 

57 

66 

66

66 

64 

64 

64 

63

57 

57 

62 

59 

63

62 

60 

59 

57 

55

Dec.

*50 

48 

45 

44 

45

46 

46 

46 

46 

42

36 

36 

37 

37 

36

37 

38 

38 

38 

36

37 

38 

39 

38 

38

41 

47 

47 

47 

44 

46

Jan.

47 

46 

*44 

42 

41

44 

43 

44 

46 

47

45 

44 

46 

47 

47

50 

50 

52 

60 

70

76 

73 

60 

52 

47

45 

51 

54 

50 

48 

48

Feb.-

46 

43 

44 

46 

47

47 

46 

45 

46 

48

50 

49 

48 

49 

*50

48 

47 

46 

46 

47

43 

46 

47 

50 

51

55 

56 

52

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

50 

52 

53 

55 

60

54 

56 

58 

*60 

59

55 

49 

47 

48 

45

42 

55 

66 

51 

48

39 

44 

43 

47 

55

42 

36 

33 

31 

33 

48

Apr.

94 

110 

104 

75 

75

*77 

75 

79 

75 

62

69 

74 

74 

79 

81

77 

69 

69 

67 

63

60 

69 

74 

74 

72

67 

64 

70 

75 

70

Secondfoot-days

2,343 

1,915 

1,289

35,382

1,559 

1,338 

1,514 

2,243 

4,003 

8,497 

2,262 

817 

727

28,507

May

. 70 

72 

88 

100 

99

93 

92 

120 

160 

187

165 

117 

88 

74 

67

69 

67 

88 

100 

100

108 

119 

135 

160 

212

296 

190 

162 

184 

175 

246

Maximum

126 

74 

50

1,260

76 

56 

66 

110 

296 

740 

201 

44 

55

740

June

422 

462 

690 

497 

296

290 

497 

740 

327 

256

278 

362 

398 

327 

233

220 

212 

208 

208 

198

180 

175 

180 

162 

160

140 

115 

102 

83 

79

July

77 

75 

67 

66 

70

69 

96 

201 

201 

162

194 

150 

112 

90 

60

40 

31 

38 

41 

38

32 

27 

24 

27 

25

20 

22 

30 

55 

69 

53

Minimum

17 

55 

36

10

41 

43 

31 

60 

67 

79 

20 

13 

11

11

Aug.

44 

40 

39 

41 

39

35

31 

31 

28 

27

33 

38 

40 

42

41

33 

27 

22 

1?

16

13 

13 

13

14

15

15 

15 

15 

14 

14 

13

Mean

75.6 

63.8 

41.6

96.9

50.3 

47.8 

48.8 

74.8 

129 

283 

73.0 

26.4 

24.2

78.1

Sept.

13 

13 

13 

12 

11

11 

11 

12 

14 

20

29 

28 

17 

16 

14

16 

18 

22 

26 

46

55 

39 

40 

40 

43

36 

30 

27 

28 

27

Runoff in 

acre-feet

4,650 

3,800 

2,560

70,180

3,090 

2,650 

3,000 

4,450 

7,940 

16,850 

4,490 

1,620 

1,440

56,540

Peak discharge (base, 650 see.-ft.). June 3 (5 a.m.) 770 sec.-ft.; June 7 (11 p.m.) 1,020 sec.-ft.

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 3 to Mar. 15 (no gage-height record Jan. 28 

to Feb. 13; discharge computed on basis of weather records and records for stations on nearby 

streams). No gage-height record May 5-8, Sept. 2-12, stage-discharge relation affected by construction Aug. 23 to Sept. 1; discharge computed on basis of weather records and records for stations on 

nearby streams.
GREEN RIVER BASIN 217

Middle Fork Beaver Creek near Lonetree, Wyo.

Location.--Water-stage recorder, lat. 40°57', long. 110°11', in SW^ see. 31, T. 3 N., R. 

1(5 "K., 500 feet north of forest boundary, 1 mile southwest of Hole-in-the-Rock ranger 

station, and 7|- miles south of Lonetree.

Records available.--October 1948 to September 1950.

Extremes. Maximum discharge during year, 257 second-feet May 30 (gage height, 2.94 feet); 

minimum not determined, occurred during period of no gage-height record.

1948-50: Maximum discharge, 523 second-feet June 18, 1949 (gage height, 3.57 feet); 

minimum riot determined, probably occurred during winter period.

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

which are fair. No diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

11

10 

10 

9.6 

9.5

9.8 

11 

12 

13 

12

14 

14 

15 

14 

14

14 

14 

15 

14 

16

14 

16 

14 

14 

13

12 

13 

12 

12 

11 

11

Nov.

11 

11

11 

11 

10

9.8 

10 

10 

10 

9.8

11 

13 

9.5 

*9.5 

9.0

9.3 

8.8 

9.3 

9.3

9.0

9.8 

b9.5 

b9.0 

8.5 

8.8

8.5 

8.5

7.9 

7.7 

b8.0

Dec.

b8.0 

b8.5 

b8.0 

b8.0 

b8.0

b9.0 

9.5 

7,7 

7.5 

8.3

b8.0 

b7.5 

(*)

> 7.0 

, 6.0

Jan.

0

5.0

Feb.

(*)

4.0

Month

Octo 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lenaar year 1949 

ary

1.......................................

ter year 1949-50 ...............

Mar.

(*)

4.0

4.5

Apr.

5.0 

5.5 

6.0 

5.0 

4.5

*4.5 

5.5 

7.0 

6.0 

5.0

5.0 

5.0 

6.0 

8.0 

7.0

6.5 

7.0 

9.0 

8.0 

9.0

12 

17 

22 

20 

*19

16 

16 

16 

18 

18

Secondfoot-days

394.1 

287.5 

220.0

9,834.7

155.0 

112.0 

132.0 

298.5 

1,498 

2,722 

1,013 

430 

309.7

7,571.8

May

14 

12 

11 

14 

17

12 

14 

13 

13 

15

15 

13 

13 

16 

18

21 

29 

34 

35 

38

49 

72 

106 

120 

108

77 

79 

95 

100 

145 

180

Maximum

16 

13 

9.5

308

22 

180 

189 

50 

18 

14

189

June

189 

154 

98 

87 

103

1 149 

142 

86 

81 

100

125 

124 

103 

100 

94

90 

86 

79 

74 

68

69 

72 

67 

67 

60

52 

51 

50 

50 

52

Minimum

July

50 

47 

47 

44 

42

41 

41 

47 

44 

40

40 

38 

34 

32 

29

28 

27 

28 

26 

29

25 

23 

22 

22

21

21 

26 

26 

28 

24 

21

9.5 

7.7

-

4.5

11 

50 

21 

10 

8.1

-

Aug.

18 

18 

17 

17 

16

16 

16 

15 

14 

14

17 

16 

16 

16 

15

14 

14 

13 

13 

13

12 

12 

11 

11 

11

11 

11 

11 

11 

11 

10

Mean

12.7 

9.58 

7.10

26.9

5.0 

4.0 

4.26 

10.0 

48.3 

90.7 

32.7 

13.9 

10.3

20.7

Sept.

10 

10 

10 

9.8 

9.5

9.5 

10 

10 

11 

11

14 

13

11 

11 

10

10 

11 

9.5 

9.8 

11

11 

11 

12 

11 

10

9.5 

9.0 

8.5 

8.5 

8.1

Runoff In 

acre-feet

782 

570 

436

19,500

307 

222 

262 

592 

2,970 

5,400 

2,010 

853 

614

15,020

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 13 to Apr. 24; discharge computed on basis of 5 discharge measurements, weather records, and records for nearby stations.
218 GREEN RIVER BASIN

East Pork Beaver Creek near Lonetree, Wyo,

Location. Water-stage recorder., lat. 40°57', long. 110°10' r in KE£ sec. 6, T. 2 N., R. 16

 K., at forest boundary, 1 mile south of Hole-in-the Rock ranger station and 7f miles 

south of Lonetree.

Records available. October 1948 to September 1950.

Extremes. Maximum daily discharge during year, 47 second-feet July 11, 12, 22-24; minimum

 daily, 2.4 second-feet Mar. 30.

1948-50: Maximum daily discharge, that of July 11, 12, 22-24, 1950; minimum daily, 

that of Mar. 30, 1950.

Remarks. Records fair. No diversions above station. Plow partly regulated by Hoop Lake 

Tcapacity unknown), which received water from Thompson Creek, a tributary to Burnt Pork.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

3.6 

3.6 

3.6 

3.6 

3.6

3.6 

4.0 

4.0 

4.0 

4.0

4.0 

4.2 

4.4 

4.2 

4.2

4.2 

4.2 

4.2 

4.2 

4.2

4.2 

4.4 

4.4 

4.4

4.4

4.4 

4.4 

4.4 

4.4 

4.4 

4.4

Mov.

4.6 

4.6 

4.6 

4.6 

4.4

4.6 

4.4 

4.6 

4.6 

4.6

4.7 

4.6 

4.4 

4.4

4.6

4.6 

4.6 

4.7 

4.6 

4.6

4.6 

4.4 

4.4 

4.6 

4.7

4.7 

4.7 

4.7 

4.7 

4.7

Dec.

4.6 

4.4 

4.4 

4.0 

4.0

3.8 

3,8 

3.8 

3.8 

3.8

3.8 

3.8 

3.8 

3.6 

3.5

3.5 

3.5 

3.3 

3.5 

3.5

3.5 

3.3 

3.3 

3.3 

3.5

3.3 

3.3 

3.3 

3.3 

3.3 

3.5

Jan.

3.5 

3.6 

3.6 

3.5 

3.3

3.3 

3.3 

3.3 

3.3 

3.2

3.1 

3.1 

3.0 

3.0 

2.8

2.7 

2.7 

3.0 

3.0 

3.1

3.2 

3.3 

3.3 

3.6 

3.8

3.6 

3.5 

3.5 

3.5 

3.5 

3.3

Feb.

3.2 

3.1 

2.8 

2.8 

2.8

2.8 

2.8 

3.0 

3.0 

3.0

3.0 

3.1 

3.2 

3.2 

3.2

3.2 

3.2 

3.2 

3.3 

3.3

3.3 

3.3

3.5 

3.5 

3.8

4.0 

4.0 

4.2

Month

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Hare 

Apr!

Mflv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

4.0 

4.0 

4.0 

4.2 

4.4

4.4

4.4

4.2 

4.2 

4.2

4.0 

4.O 

3.6 

3.5 

3.5

3.3 

3.3 

3.2 

3.2 

3.1

3.1 

2.8 

2.8 

2.8

2.8

2.8 

2.8 

2.6 

2.6 

2.4 

2.6

Apr.

3.0 

3.3 

3.3 

3.2 

3.2

3.2 

4.0 

4.2 

4.2 

4.2

4.4

4.4 

4.7 

4.6 

4.4

4.6 

5.3 

5.1 

5.1 

5.3

5.8 

6.2 

6.5 

6.0 

6.2

6.2 

6.0 

6.0 

6.0 

6.2

Secondfoot -day s

127.8 

137.6 

113.1

2,965.6

101.5 

90.8 

106.8 

144.8 

283.9 

252.0 

1,262.4 

436.6 

126.6

3,183.9

May

6.0 

6.0 

6.0 

6.2 

6.5

6.2 

6.0 

6.2 

6.2 

6.8

7.2 

8.0 

8.0 

9.O 

9.6

10 

11 

11 

11 

11

11 

11 

12 

12 

12

12 

11 

11 

11 

11 

12

Maximum

4.4

4.7 

4.6

35

3.8 

4.2 

4.4 

6.5 

12 

12 

47 

40 

4.4

47

June

12 

12 

12 

11 

11

11 

11 

11 

11 

9.9

9.3 

9.3 

9.0 

8.3

8.0

7.5 

7.2 

7.0 

6.8 

6.5

6.2 

6.2 

6.2 

6.0 

6.0

6.0 

6.0 

6.2 

6.2 

6.2

Minimum

July

6.2 

6.2 

14 

35 

45

42 

41 

41 

41 

45

47 

47 

44 

44 

44

45 

46 

46 

46 

46

46 

47 

47 

47 

46

46 

44 

42 

42 

42 

42

3.6 

4.4 

3.3

2.4

2.7 

2.8 

2.4 

3.0 

6.0 

6.0 

6.2 

4.2 

4.0

2.4

Aug.

40 

37 

35 

32 

32

32 

27 

25 

22 

19

19 

17 

15 

10 

4.7

4.7 

4.6 

4.6 

4.6 

4.4

4.4 

4.4 

4.4

4.2 

4.2

4.2 

4.2 

4.2 

4.4 

4.2 

4.2

Mean

4.12 

4.59 

3.65

8.12

3.27 

3.24 

3.44 

4.83 

9.16 

8.40 

40.7 

14.1 

4.22

8.72

Sept.

4.2 

4.2 

4.2 

4.2 

4.2

4.O 

4.0 

4.0 

4.O 

4.2

4.4 

4.2 

4.0 

4.2 

4.2

4.2 

4.2 

4.2 

4.2 

4.2

4.2 

4.2 

4.2 

4.4 

4.4

4.4 

4.4 

4.4 

4.4 

4.4

Runoff in 

acre-feet

253 

273 

224

5,88O

2O1 

180 

212 

287 

563 

500 

2,540 

866 

251

6,35O
GREEN RIVER BASIN 219

West Pork Beaver Creek near Lonetree, Wyo.

Location.--Water-stage recorder, lat. 40°57i, long. 110°13i, in SW^ sec. 35, T. 3 N., R. 15 

E., at forest boundary, an eighth of a mile above confluence with Fellow Creek and 1\ 

miles southwest of Lonetree.

Records available.--October 1948 to September 1950.

Extremes. Maximum discharge during year, 110 second-feet May 30 (gage height, 2.28 feet); 

minimum not determined, probably occurred during period of no gage-height record.

1948-50: Maximum discharge, 289 second-feet June 18, 1949 [gage height, 3.13 feet); 

minimum not determined, probably occurred during period of no gage-height record.

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

wETch are fair. Station is above all-diversions. No regulation of flow.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

7.2 

7.0 

6.8 

6.4 

6.4

1.2 

8.3 

8.8 

9.3 

8.8

10 

11 

12 

11

9.8

9.6 

9.8 

11 

10 

11

10 

12 

10 

9.6 

9.0

S.6 

8.6 

8.3 

8.3 

8.3 

7.8

Oeto 

Hove 

Deoe

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

Hov.

8.0 

.8 

.8 

.8 

.8

.6 

.6 

.6 

.6 

.4

.6 

.O 

 O 

* .0 

.0

.0 

.8 

>.8

.2

.2 

.2 

.0

.0 

.0

.0 

.0 

.0 

6.6 

6.5

Dec.

6.0

(«)

5.0

4.0

Jan.

(«) 

3.5

Feb.

(»)

3.0

Month

mber. ........... r -------- .......

lendar year 1949

ter year 1949-50 ...............

Mar.

(«)

3.0

3.5

Apr.

4.0 

4.5 

4.5 

4.0 

4.0

*4.0 

4.5 

5.5 

4.5 

4.5

4.5 

4.5

5.0 

6.0 

5.5

5.0 

5.5 

7.0 

6.0 

7.0

9.0 

11 

17 

15 

*14

12 

12 

IE 

14 

14

Secondfoot-days

281.9 

221.5 

154.0

6,691.3

108.5 

84.0 

101.0 

230.0 

959.0 

1,744 

959 

394.0 

257.4

5,494.3

May

10 

9.0 

9.0 

10 

12

10 

11 

11 

11 

12

11 

10 

11 

16 

20

23 

27 

28 

26 

28

34 

45 

59 

73 

69

47 

46 

57 

58 

76 

90

Maximum

12 

9.6

188

17 

90 

88 

47 

19 

13

90

June

88 

83 

55 

53 

58

82 

83 

53 

48 

58

70 

7O 

61 

62 

59

60 

58 

56 

55 

50

50 

55 

55 

56 

48

42 

42 

43 

45 

46

Minimum

July

44 

42 

41 

38 

37

37 

38 

47 

43 

37

36 

34 

32 

31 

30

28 

29 

28 

26 

27

25 

24 

23 

22 

22

21 

25 

26 

25

21 

20

6.4 

6.5

-

4.0 

9.0 

42 

20 

8.6 

5.8

-

Aug.

19 

19 

18 

18 

18

15 

14 

14 

13 

- 13

18 

16 

14 

14 

12

12 

12 

11 

11 

10

10 

10 

10 

9.6 

9.3

9.6 

9.3 

9.0 

8.8 

8.8 

8.6

Mean

9.09 

7.38 

4.97

18.3

3.5 

3.0 

3.26 

7.67 

30.9 

58.1 

30.9 

12.7 

8.58

15.1

Sept.

8.3 

9.3 

8.3 

8.6 

8.0

8.0 

8.6 

8.3 

9.3 

9.S

13 

12 

9.0 

8.6 

8.6

8.3 

8.8 

7.8 

8.0 

11

9.3 

9.3 

8.8 

9.0 

8.0

7.2 

6.4 

6.0 

6.0 

5.8

Runoff in 

acre-feet

559 

439 

305

13,270

215 

167 

200 

456 

1,900 

3,460 

1,900 

781 

511

10,890

* Winter discharge measurement made on this day.

Note. Ho gage-height record Dec. 19 to Apr. 24, Apr. 27 to May 13 (stage-discharge relation probably affected by ice most of period); discharge computed on basis of 4 discharge measurements, 

weather records, and records for nearby stations. Stage-discharge relation affected by ice Hov. 21- 

24,. Hov. 30 to Dec. 18, Apr. 25, 26.
220 GREEN RIVER BASIN

Burnt Fork near Burntfork, Wyo.

Location.--Water-stage recorder, lat. 40°57i , long. 110°04', In Sw£ sec. 31, T. 3 N., R. 

17 E., In Utah, half a mile west of Ashley National Forest boundary and 7 miles southwest of Burntfork.

Drainage area.--52.8 square miles.

Records available.--April 1943 to September 1950 (no winter records 1943-45).

Extremes. Maximum discharge during year, 221 second-feet May 31 (gage height, 6.41 feet, 

from recorded range in stage); minimum not determined, occurred during period of no 

gage-height record.

1943-50: Maximum discharge, 740 second-feet June 26, 1944, from rating curve extended above 200 second-feet; maximum gage'height, 8.07 feet June 20, 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.

Discharge, in second-feet, water year October 1949 to September 1950

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.

13

12 

10 

10 

9.0

8.5 

10 

12 

14 

13

8.5 

17 

20 

19 

17

16 

15 

16 

16 

b!4

b!2 

bio 

b9.0 

bS.l 

bS.O

*b9.0 

9.2 

8.7 

8.4 

8.0 

8.5

Nov.

8.7 

9.1 

9.2

8.5 

8.0

7.6 

7.2 

7.1 

6.9 

6.5

6.3 

6,7 

6.9 

7.2 

7.4

7.6 

7.7 

7.7 

7.1 

6.9

6.0 

6.3 

6.4 

6.6 

6.8

6.6 

6.3 

5.7 

5.2 

5.0

Dec.

(*)

4.5

Jan.

4.0

Feb.

4.0

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Peak discharge (base, 100 sec. -ft.). May

221 see. -ft.; June 7 (11 a.m.) 202 sec. -ft.;

Mar.

(*)

. 5.4

Apr.

6.0 

5.8 

5.6 

6.0 

6.7

7.6 

7.8 

7.4 

6.8 

7.2

7.8 

8.4 

*9.5 

7.5 

6.4

6.7 

9.0 

8.5 

8.0 

8.0

10 

13 

14 

14 

12

11 

11 

11 

12 

13

Secondfoot -days

368.9 

211.2 

139.5

14,414.4

124.0 

112.0 

167.4 

267.7 

1,675.2 

3,739 

2,132 

927 

630

10,493.9

25 (time and 

June 11 (9

May

10

11 

11 

11 

11

10 

11 

10 

9.2 

11

12 

14 

17 

22 

22

28 

35 

42 

36 

41

50 

60 

74 

93 

154

122 

122 

133 

132 

156 

205

Maximum

20 

9.2

362

14 

205 

186 

99 

46

205

June

186 

158 

138 

118 

140

170 

185 

144 

131 

136

161 

159 

151 

140 

122

115 

118 

115 

110 

105

107 

110 

101 

105 

98

90 

88 

83 

78 

77

July

74 

71 

7O 

70 

70

70 

80 

99 

99 

88

95 

89 

78 

70 

63

58 

58 

73 

66 

81

62 

56 

55 

54 

51

50 

62 

G2 

59 

52 

47

Aug.

46 

44 

42 

41 

40

37 

36 

33

32 

31

33 

34 

36 

33 

SO

29 

28 

26 

26 

?5

24 

24 

23 

23 

22

22 

22 

22 

21 

21 

21

Sept.

20

20 

20 

20 

20

20 

21 

20 

22 

24

28 

23

19

19 

18

18 

18 

16 

19 

25

26 

28 

28 

25 

23

16 

20 

19

18 

17

Minimum Mean Hunoff^ln

8.0 11.9 732 

5.0 7.04 419 

4.5 277

39.5 38,600

4.0 246 

4.0 222 

5.4 332 

5.6 8.92 531 

9.2 54.0 3,320 

77 125 7,420 

47 68.8 4,230 

21 29.9 1,840 

16 21.0 1,250

28.8 20,820

discharge unknown); May 31 (time unknown) 

p.m.) 187 sec»-ft.
GREEN RIVER BASIN 221

Sheep Creek near Manila, Utah

Location.--Water-stage recorder, lat. 40°53', long. 109°54', in NE£ sec. 28, T. 2 N., R. 18 

E., 350 feet downstream from confluence of North and South Forks and 12 miles southwest 

of Manila.

Drainage area. 45.9 square miles.

Records available. October 1942 to September 1950 (no winter records 1943).

Extremes.--Maximum discharge during year, 259 second-feet May 22 (gage height, 4.91 feet); 

minimum daily, 0.3 second-foot Sept. 28.

1942-50: Maximum discharge, 1,020 second-feet May 19, 1948 (gage height, 6.05 feet), 

from rating curve extended above 250 second-feet; minimum daily, 0.1 second-foot on 

many days in September and October 1946.

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

One large diversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0.8 

.8 

.8 

.8 

.8

.7 

.7 

.8 

.8 

.8

.7 

.9 

.8 

.7 

.7

.6 

.6 

.7 

.7

.6

.6 

.5 

.6 

.5 

.5

8.0 

*14 

14 

14 

13 

13

Nov.

13 

12 

11 

11 

11

11 

10 

9.6 

*9.4 

9.4

9.4 

9.4 

9.6 

9.8 

10

10 

10 

9.8 

9.4 

9.0

8.6 

8.0 

7.8 

7.6 

7.4

7.2 

6.6 

6.2 

5.6 

5.2

Dec.

(*)

4.3

Jan.

. 5.0

Feb.

4.0

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mgv

June 

July 

Augu 

Sept

Wa

ber...... ...............................

lendar year 1949

1..................................... . .

ter year 1949-50 .......................

Mar.

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

4.1 

4.4 

4.1 

4.1 

4.1

4.1 

4.4 

5.3 

5.3 

5.3

5.3 

5.3 

5.3 

5.3 

5.3 

5.3

Apr.

6.3 

6.7 

6.3 

7.0 

7.0

7.8 

11 

11 

7.8 

9.6

11 

10 

14 

13 

10

13

17 

16 

16 

19

26 

36 

43 

29 

23

19 

18 

13 

7.8 

7.4

Secondfoot-days

93.5 

274.0 

133.3

7,981.6

155.0 

112.0 

138.5 

441.7 

1,337.2 

674.0 

39.8 

18.0 

13.4

3,430.4

May

7.8 

8.5 

4.4 

1.7 

4.7

6.7 

5.0 

4.4 

3.8 

3.8

4.1 

6.3 

10 

22 

42

56 

77 

75 

46 

45

67 

140 

136 

116 

108

52 

36 

47 

42 

64 

95

Maximum

14

13

340

5.3 

43 

140 

88 

2.1 

.8 

.6

140

June

88 

75 

34 

27 

32

61 

66 

24 

13 

16

26 

31 

25 

25 

23

21 

20 

18 

13 

5.3

3.8 

3.5 

2.9 

4.1

5.6

2.4 

2.1

2.1 

2.1 

2.1

July

2.1 

2.1 

1.9 

" 1.9 

1.9

1.7 

1.7 

1.9 

1.7 

1.7

1.5 

1.5 

1.3 

1.3 

1.3

1.2 

1.2 

1.2 

1.2 

1.3

1.0 

.8 

.8 

.7 

.7

.7 

.8

.8 

.7

.6 

.6

Minimum

0.5 

5.2

.4

4.1 

6.3 

1.7 

2.1 

.6 

.4 

.3

.3

Aug.

0.8 

.7 

.7

.6 

.6

.S 

.6 

.6 

.5

.6

.6 

.6 

.7 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.5

.5 

.5 

.5 

.4 

.4 

.4

Mean

3.02 

9.13 

4.3

21.9

5.0 

4.0 

4.47 

14.7 

43.1 

22.5 

1.28 

.58 

.45

9.40

Sept.

0-4 

.4 

.4 

.4 

.4

.4 

.4 

.4 

.5 

.5

.6 

.5 

.6 

.5 

.5

.4 

.4 

.4 

.5

.6

.5 

.5 

.5 

.4 

.4

.4 

.4 

.3

Runoff in 

acre-feet

185 

543 

264

15,830

307 

222 

275 

876 

2,650 

1,340 

79 

36 

27

6,800

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 26 to Mar. 8 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 3 discharge measurements, weather records, and records for stations on nearby streams.
222 GREEN RIVER BASIN

Sheep Creek at mouth, near Manila, Utah

Location.--Water-stage recorder, lat. 40°55 I 50", long. 109°38'55", in NE^ sec. 10 (unsurveyed),T. 2 N., R. 20 E., 1 mile upstream from mouth and 6 miles southeast of Manila.

Drainage area.--Ill square miles.

Records available.--October 1946 to September 1950.

Extremes.--Maximum discharge during year, 261 second-feet May 23 (gage height, 2.76 feet); 

 minimum recorded, 8.5 second-feet Sept. 2, but may have been less during period of no

gage-height record.

1946-50: Maximum discharge, 450 second-feet May 20, 1948 (gage height, 3.49 feet),

from rating curve extended above 230 second-feet; minimum, 6.7 second-feet Aug. 16, 1948.

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

which 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.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

Z2 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

10 

10 

10 

10 

9.8

9.8 

11 

12 

13

12

11 

12 

13 

13 

12

12 

13 

13 

18 

16

16 

14 

15 

14

14

14 

17 

17 

18 

16 

16

Nov.

16 

16 

16 

16 

16

16 

16 

16 

16

16

15 

14 

16 

16 

 17

16 

16 

16 

16

16

16 

15 

15 

20 

16

16 

17 

18 

16 

15

Dee.

15 

15 

15

16 

17

16 

16 

16 

17 

16

b!5 

b!3 

b!3 

(«)

14 

13

Jan.

(»)

12

Feb. ! -

(*)

13 

15.

Month

Octo 

Nove 

Deee

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

1.. .....................................

ter year 1949-50 ...............

Mar.

( )

16

17

Apr.

18 

18 

21 

*16 

15

16 

19

24 

22 

19

18 

18 

21 

27 

25

21 

25 

32 

26 

28

40 

49 

59 

50 

41

38 

40 

34 

24 

23

Secondfoot-days

411.6 

482 

441

12,609.9

H 

372 

385 

512 

827 

2,181 

1,593 

497 

328.0 

343.6

8,373.2

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

May

25 

28 

28

22 

22

27 

25 

23 

22 

21

23 

27 

32 

46 

70

89 

108 

120 

81 

77

86 

137 

182 

135 

163

98 

81 

83 

83 

86 

131

Maximum

18 

20 

17

294

59 

182 

139

24 

12 

14

182

June

123 

139 

105 

91 

92

106 

114 

85 

62 

51

53 

60 

56 

52 

46

42 

38 

35 

33 

27

23 

21 

20 

20 

20

18 

16 

16 

15 

14

July

15

16 

16 

16 

16

16 

16 

17 

17 

18

24 

19 

18 

17 

17

16 

16 

17 

16 

16

15 

15 

15 

15 

14

14 

14 

15 

15 

14 

12

Aug.

12 

12 

12 

12 

11

11 

11 

10 

10 

10

11 

12 

12 

12 

12

11

11 

10 

10 

10

9.8 

9.8 

9.3 

9.5 

9.8

9.8 

9.8 

9.8 

9.8 

9.3 

9.3

1 

Minimum Mean

9.8 13.3 

14 16.1 

14.2

34.5

12.0 

13.8 

16.5 

15 27.6 

21 70.4 

14 53.1 

12 16.0 

9.3 10.6 

8.9 13.5

8.9 22.9

Sept.

9.1 

9.1 

8.9 

9.1 

9.1

9.1 

9.1 

9.1

10 

11

14 

13 

12 

12

12

12 

12 

12 

12 

14

14 

13 

13 

13 

12

12 

12 

12 

12 

12

Runoff in 

acre-feet

816 

956 

875

25,020

738 

764 

1,020 

1,640 

4,330 

3,160 

986 

651 

682

16,620

most 01 perioaj, aiscnarge computea c 

ords for stations on nearby streams.
GREEN RIVER BASIN 223

Sheep Creek upper canal near Manila, Dtah

Location. Water-stage recorder, lat. 40°55', long. 109°57', In SW£ sec. 18, T. 2 N., R. 

IS fi., 70 feet downstream from bridge on Highway 165 and 14 miles southwest of Manila.

Records available. September 1949 to September 1950.

Extremes. Maximum discharge during period, 30 second-feet May 31 (gage height, 1.99 

reet); no flow at times.

Remarks. Records good except those for Sept. 4-30, 1950, which are fair. Canal diverts 

water from Sheep Creek for Irrigation In vicinity of Manila.

Discharge, in second-feet, 1949-50 

1949

Day

Sept. 9

10

11

12

13

14

15

Discharge

1.0

1.1

1.4

l.O

1.0

1.0

.9

Day

Sept. 16

17

18

19

30

21

ZZ

Discharge

0.8

.S

.S

1.7

2.7

1.8

1.1

Day

Sept. 23

24

25

26

27

23

29

3O

Discharge

1.6

2.7

1.9

1.4

.9

.8

1.9

3.9

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

Oct.

2.5

1.7

1.4

1.0

1.1

2.6

2.2

2.1

2.2

b2.5

b3.O

b3.O

2.8

2.8

2.6

2.1

2.2

3.1

*b4.0

3.5

2.0

0

0

0

0

0

Nor. Dec. Jan. Feb. Mar. Apr.

O

0

0

0

0

O

0

O

0

0

0

O

0

0

O

O

0

0

0

O

0

O

1.5

2.8

-

May

3.0

3.5

4.0

4.5

5.O

12

17

17

15

8.5

14

21

20

19

18

17

2O

27

28

June

27

26

26

26

24

25

29

27

25

25

25

26

27

28

2S

28

26

26

26

28

27

27

26

26

27

26

25

25

24

24

-

July

24

24

24

24

23

21

22

24

22

19

13

12

11

10

8.5

6.6

5.4

5.2

5.0

6.4

4.6

3.9

3.4

3.4

2.8

2.5

2.8

2.6

2.2

1.7

1.4

Aug.

1.4

2.0

7.8

7.1

6.6

7.6

8.0

7.6

7.1

6.9

6.2

6.0

6.0

5.4

4.1

3.1

2.1

1.9

2.9

9.2

9.2

9.O

9.0

8.7

8.7

8.7

8.5

8.2

7.6

6.9

6.0

Sept.

4.8

3.9

3.1

3.0

3.O

3.0

3.0

3.0

6.0

6.0

6.O

6.5

6.0

5.8

5.6

5.4

5.4

5.2

5.0

5.6

5.6

5.0

5.0

4.1

3.8

3.6

3.0

2.8

3.0

2.6

-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 2O-26, Apr. 23 to May 16; discharge computed on basis of 1 discharge measurement and engineer's notes.

Monthly discharge, in second-feet, 1949-5O

Month

September 9-30, 1949. .......................

December. ...................................

Calendar year .......................

May.........................................

September. ..................................

Water year 1949-50 .......................

Secondfoot-days

32.2

0

-

785

34X4

133.8

1,864.2

Maximum

3.9

0

-

0

29

24

9.2

6.5

29

Minimum

0.8

0

-

0

24

1.4

1.4

2.6

0

Mean

1.46

O

-

0

0

10.2

26.2

11.0

6.44

4.46

5.11

Runoff in 

acre-feet

64

0

-

O

c> 4,'

GZt1.56O*

67?

39K

26f

3,700
224 GREEN RIVER BASIN

Sheep Creek lower canal near Manila, Utah

Location. Water-stage recorder, lat. 40°54.', long. 109°54', in SE£ sec. 21, T. 2 N., R. 

THTT7, 1 mile downstream from heading of canal and 11 miles southwest of Manila.

Records available.--September 1949 to September 1950.

Extremes. Maximum discharge during period, 96 second-feet June 12 (gage height, 2.79 

feet); no flow at times.

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

which are fair. Canal diverts water from Sheep Creek for irrigation in vicinity of 

Manila.

Discharge, In second-feet, 1949-50 

1949

Day

Sept. 10

11

12

13

14

15

16

Discharge

14

17

14

14

14

13

12

Day

Sept. 17

18

19

20

21

22

23

Discharge

12

11

10

8.6

8.2

9.2

10

Day

Sept. 24

25

Z6

Z7

28

29

30

Discharge

8.8

9.2

10

11

11

14

11

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

Dot.

10

11

10

10

10

8.8

9.2

12

13

1)13

b!3

1314

14

13

13

12

12

16

*13

1)13

t)13

1)12

1)12

1)12

*1>11

1)6

]..,

Nov.

bO.2

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

-

Dec. Jan. Feb. Mar. Apr.

0

0

0

0

0

0

0

0

0

0

0

o

0.

0

0

0

0

0

0

0

0

0

aO.6

al.3

al.3

al.3

al.3

al.3

al.3

al.O

-

Bay

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

11

31

31

23

14

21

33

37

49

60

72

77

80

83

June

82

82

76

74

74

77

92

82

77

82

89

91

88

86

85

85

84

82

83

82

81

81

79

80

82

69

62

58

56

54

-

July

54

53

46

44

42

41

41

42

40

39

42

40

37

35

34

33

33

36

38

44

35

33

33

33

31

30

39

37

34

30

32

Aug.

38

35

27

24

23

23

25

23

21

26

27

27

28

26

25

25

24

25

28

19

.17 "16

15

14

14

14

14

12

12

12

12

Sept.

11

12

13

12

9.4

9.2

8.8

8.8

11

11

12

12

10

9.8

10

9.8

9.4

9.8

9.8

15

16

14

14

12

11

9.8

8.8

8.6

8.2

8.0

-

» Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 1 discharge measurement and engineer 1 

notes.

ID Stage-discharge relation affected by Ice.

Monthly discharge, In second-feet, 1949-50

Month

September 10-30, 1949. ......................

December. ...................................

Calendar year .......................

 May . .. ....... . .......

September. ..................................

Water year 1949-50 .......................

Seoondfoot-days

242.0

0

-

0

9.4

622

2,355

1,178

671

323.2

5,466.6

Maximum

17

0

-

0

0

1.3

S3

92

54

38

16

02

Minimum

8.2

0

0

_

0

0

0

0

0

54

30

12

8.0

0

Mean

11.5

9.90

.03

0

-

0

0

0

.31

20.1

78.5

38.0

21.6

10.8

15.0

Runoff in 

aore-feet

480

609

2.0

O

-

0

0

0

19

1,230

4,670

2,340

1,330

641

10,840
GREEN RIVER BASIN 225 

Carter Creek near Manila, Utah

Location. --Water-stage recorder, lat. 40 0 50', long. 109°50', in NW-J- sec. 7, T. IN., R. 19 

E~;funsurveyed), 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 1950.

Extremes. Maximum discharge during year, 83 second-feet May 30 (gage height, 2.23 feet); 

minimum not determined, occurred during period of no gage-height record.

1948-50: Maximum daily discharge, 130 second-feet 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.

Discharge, In second-feet, Water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

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.

4.4 

4.4 

4.2 

4.2 

4.1

4.1

4.2 

4.6 

4.6 

4.4

b3.5 

3.0 

3.4 

4.4 

4.6

4.4 

4.6

5.1 

5.1 

4.6

*4.9 

b4.8 

4.6 

4.6 

4.6

4.6 

4.4 

4.4 

4.2 

4.2 

4.2

Nov.

4.2 

4.1 

3.9 

4.1 

4.1

4.2 

4.2 

3.7 

3.9 

3.7

3.9 

3.7 

3.6 

3.5 

*3.6

3.4 

3.3 

3.0 

3.0 

3.0

3.0 

3.2 

3.5 

3.3 

3.2

3.1 

3.3 

3.3 

3.2 

3.0

Dec.

3.0 

2.5

Jan.

1"

(*) 

2.0

Feb.

2.0

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Mflv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

2.5

Apr.

3.0 

3.5 

2.8 

3.0 

3.0

3.8 

4.0 

3.5 

3.5 

3.3

3.4

3.6 

4.0 

4.2 

4.0

4.3 

4.4 

4.2 

4.4 

4.8

5.5 

5.6 

5.3 

5.O 

4.6

*4.6 

5.1 

4.9 

4.9 

4.3

Secondfoot-days

135.4 

106.2 

85.0

4,697.3

64.5 

56.0 

77.5 

124.5 

616.7 

1,163 

516 

219.4 

160.9

3,325.1

May

4.3 

4.2 

4.2 

5.5 

5.1

4.7 

4.7 

4.9 

4.9 

4.6

4.4 

4.2 

4.6 

6.0 

7.6

9.8 

14 

19 

19 

20

22 

30 

38 

46 

45

35 

33 

39 

43 

56 

74

Maximum

5.1 

4.2

130

5.6 

74 

70 

24 

9.0 

6.0

74

June

70 

65 

46 

38 

40

52 

60 

44 

36 

36

41 

46 

43 

42 

42

40 

38 

37 

35 

33

31 

30 

30 

32 

32

28 

26 

24 

24 

22

July

24 

23 

24 

24 

21

21 

20 

20

19 

18

19 

19 

21 

16 

14

14 

14 

14 

16 

17

14 

14 

13 

13 

13

12 

13 

13 

12 

11 

10

Minimum

3.0 

3.0

-

2.8 

4.2 

22 

10 

5.8 

4.2

-

Aug.

9.0 

8.6 

8.2 

7.9 

7.6

7.6 

7.6 

7.6 

7.2 

7.2

7.6 

7.9 

8.2 

7.9 

7.6

7.2 

7.2 

6.9 

6.9 

6.6

6.3 

6.3 

6.3 

6.0 

6.3

6.3 

6.0 

6.0 

5.8 

5.8 

5.8

Mean

4.37 

3.54 

2.74

12.9

2.08 

2.0 

2.5 

4.15 

19.9 

38.8 

16.6 

7.08 

5.36

9.11

Sept.

5.5 

5.5 

5.5 

5.3 

5.3

5.3 

5.3 

5.1 

5.8 

5.8

5.8 

5.5 

5.3 

5.8 

6.0

5.5 

5.5 

5.5 

5.8 

5.8

5.8 

5.5 

5.5 

5.3 

5.1

4.9 

4.9 

4.4 

4.4 

4.2

Runoff In 

acre-feet

269 

211 

169

9,320

128 

111 

154 

247 

1,220 

2,310 

1,020 

435 

319

6,590

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Nov. 12-14, Nov. 20 to Apr. 25 (stage-discharge relation probably 

affected by Ice most of period), Apr. 30, May 1, May 6-11; discharge computed on basis of 1 discharge 

measurement, weather records, and records for nearby streams.
S26 GREEN RIVER BASIN

Carter Creek at mouth, near Manila, Utah

Location.--Water-stage recorder., lat. 40°53'25", long. 109°35'20", in SE£ sec. 19, T. 2 

N., K. 21 E. (unsurveyed), 600 feet upstream from mouth and 10 miles southeast of 

Manila.

Drainage area.--110 square miles.

Records available.--October 1946 to September 1950.

Extremes.--Maximum discharge during year, 498 second-feet June 2 (gage height, 3.24 feet); 

minimum not determined, occurred during period of no gage-height record.

1946-50: Maximum discharge, 646 second-feet June 12, 1949 (gage height, 3.71 feet); 

minimum not determined.

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

which are fair.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

23 

23 

22 

21 

21

21 

24 

29 

29 

26

f22 

27 

29 

29 

29

26 

27 

32 

38 

33

29 

26 

28 

26 

28

27 

27 

25 

29 

27 

24

Nov.

27 

27 

27 

27 

25

25 

24 

25 

24 

24

23 

f20 

23 

24 

24

*22 

22 

21 

20 

20

bl6 

b!7 

24 

27 

21

20 

21 

21 

f!7 

f!7

Dec.

f!6 

f!6 

16 

f!3 

b!4

b!5

b!6 

b!6 

b!5 

b!6

b!4 

b!3 

b!3 

b!3 

b!4

b!4 

b!5 

b!5 

b!4

13

Jan.

I"

(*)

12

Feb.

(*) 

12

13

Honth

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Rare 

Aprl

June 

July 

Xugu 

Sept

Wa

lendar year 1949

1.......................................

St......................................

ter year 1949-5O ...............

Mar.

(*) 

14

15

Apr.

22 

36 

37 

*23 

24

26 

48 

60 

48 

42

45

47 

55 

64 

60

65 

75 

78 

72 

75

86 

98 

107 

105 94

88 

86 

93 

80 

80

Secondfoot-days

827 

675 

434

29,829

377 

344 

435 

1,919 

5,532 

8,324 

3,051 

1,300 

928

24,146

May

80 

91 

83 

80 

78

78 

81 

81 

78 

80

89

103 

121 

144 

153

160 

173 

195 

198 

195

208 

223 

268 

29O 

321

287 

265 

273 

295 

330 

431

Maximum

38 

27

16

574

107 

431 

463 

ISO 

58 

40

463

June

453 

463 

390 

342 

336

369 

399 

333 

295 

290

304 

321 

313 

3O7 

295

284 

268 

254 

238 

225

218 

205 

195 

198 

200

181 

171 

164 

160 

153

July

150 

150 

144 

142 

133

127 

125 

125 

119 

121

119

113 

103 

100 

91

84 

81 

84 

84 

89

78 

74 

71 

74 

72

67

70 

70 

68 

63 

60

Minimum

21 

16

- j

22 

78 

153 

60 

30 

26

-

Aug.

58 

57 

54 

52 

51

48 

47 

47 

45 

44

48 

50 

50 

48 

44

42 

40 

39 

39 

37

35 

34 

34 

34 

34

34 

32 

31 

31 

31 

30

Mean

26.7 

22.5 

14.0

81.7

12.2 

12.3 

14.0 

64.0 

178 

277 

98.4 

41.9 

30.9

66.2

Sept.

29 

28 

27 

27 

27

27 

27 

26 

31 

32

33 

34 

29 

33 

40

32 

31 

30 

32 

40

37 

34 

35 

33 

31

30 

29 

29 

28 

27

Runoff In 

acre-feet

1,640 

1,340 

861

59,170

748 

682 

863 

3,810 

10,970 

16,510 

6,050 

2,580 

1,840

47,890

Peak discharge (base, 400 sec.-ft..). June 2 (5 a.m.) 498 sec.-ft.; June 7 (5:30 a.m.) 412 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by loe.

f Discharge computed on basis of partly estimated gage heights.

Note.--No gage-height record Dec. 20 to Mar. 3O (stage-discharge relation affected by Ice during 

most of period); discharge computed on basis of 3 discharge measurements, weather records, and records for nearby streams. 1
GREEN RIVER BASIN 227

Yampa River at Steamboat Springs, Colo.

Location.--Water-stage recorder, lat. 40°29', long. 106°50', in sec. 17, T. 6 N R 84 W 

3D reet downstream from First Street Bridge in Steamboat Springs, a quarter of a mile " 

upstream from Soda Creek. Datum of gage is 6,696.23 feet above mean sea level, adjustment of 1912. J

Drainage area. 604 square miles.

Records available. May 1904 to October 1906, October 1909 to December 1913, January 1914 

to septemoer1926 (monthly discharge only), and October 1933 to September 1950 in reports of Geological Survey. May 1904 to October 1906 and March 1910 to September 1950 

in reports of State engineer.

Average discharge.--43 years (1904-6, 1909-50), 479 second-feet.

Extremes. Maximum discharge during year, 2,920 second-feet June 6 (gage height 4 99 feet)- 

minimum daily, 47 second-feet Sept. 2.

1904-6. 1909-50: Maximum discharge, 6,820 second-feet June 14, 1921 (gage height, 

7.08 feet); .minimum daily, 4 second-feet Sept. 8, 1934, Sept. 10-13, 1944.

Remarks. Records excellent above 1,000 second-feet and good below except those for periods 

orTce effect or no gage-height record, which are fair. Diversions above station for 

irrigation.

Revisions.--W 764: Drainage area.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

Z 

3

4 

5

6 

7

e

9 

10

11 

13 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24

25

26 

27 

26 

29 

30 

31

Oct.

122 

145 

170 

180 

178

175 

162 

200 

196 

190

187 

188 

190 

190 

193

191 

194 

193 

199 

180

160 

150 

155 

168 

180

166

165 

158 

160 

175 

155

Nov.

150 

160 

160 

160 

155

150 

145 

140 

150 

150

155 

135 

120 

 138 

153

153 

156 

145 

130 

125

120 

120 

140 

175 

170

170 

170 

170 

150 

135

Dec.

120 

105 

93 

97 

91

99

110 

97 

*112 

106

65 

b60 

80 

76 

b66

70 

80 

88 

104 

b98

b94 

b90

b98 

b96 

b90

b85 

blOO 

b95 

b92 

b94 

b92

Jan.

110 

120 

b96 

b80 

b66

b85 

b80 

b76 

b90 

b80

b90 

87 

85 

83 

b78

68 

 82

85 

87 

87

87 

87 

67 

89 

b80

b64 

b68 

74 

87 

87 

b84

Feb.

b80 

b72 

b70 

b72 

b78

b90 

b94 

b96 

b84 

b78

b85 

99 

106 

102 

 95

106

97 

112 

blOS 

106

104 

b97 

89 

95 

106

110 

117 

120

Month

Octo 

Move

Deoe

Ca

Janu 

Febr

Marc 

Apr! 

Hav

June 

July 

Augu 

Sept

Ha

nber. ........... - - - ---------------

lendar year 1949

ter year 1949-50 .......................

Peak discharge (ban*. 3,000 see. -ft,}. --No

* Winter discharge Mature»ent Bade on thl

Mar.

bllS 

99 

99 

108 

110

112 bioe

93 

93 

106

1O6 

108 

106 

85 

 99

102 

108 

128 

141 

125

133 

115 

120 

120 

135

156 

138 

125 

120 

141 

147

Apr.

175 

240 

360 

288 

264

300 

531 

902 

1,240 

793

641 

715 

818 

902 

876

703 

733 

824 

674 

648

76? 

987 

1,140 

1,010 

769

721

624 

674 

641 

602

Secondfoot -days

5,439 

4,450 

2,844

196,952

2,629 

2,670 

3,599 

20,562 

36,500 

51,449 

9,020 

3,134 

2,733

145,029

May

570 

608 

652 

805 

769

739 

674 

586 

536 

500

500 

602 

709 

850 

1,040

1,200 

1,390 

1,550 

1,520 

1,540

L T,620 

1,940 

2,170 

2,230 

1,970

1.54O 

1,300 

1,320 

1,320 

1,820 

2,150

Maximum

200

175 

120

3,070

120 

120 

156 

1,240 

2,230 

2.570 

570 

150 

138

2,570

June

2,400 

2,500 

2,210 

2,000 

2,200

2,470 

2,570 

2,120 

1,810 

1,970

2,140 

2,250 

2,190 

2,130 

2,090

2,090 

2,020 

1,820 

1,640

1,480

1,320 

1,200 

1,160 

1,040 

1,060

i 870 

775 

691 

841 

592

July

531 

510 

542 

450 

405

365 

320 

495 

570 

440

536 

445 

325 

272 

232

199 

185 

175 

206 

185

185 

171 

150 

133 

138

133 

126 

135 

150 

168 

141

Aug.

133 

122 

125 

138 

138

130 

133 

125 

117 

117

125 

150 

141 

135 

122

110 

102 

93 

83 

80

76 

72 

69 

65 

65

67 

69 

60 

60 

60 

52

Minimum Mean

122 175 

120 14B 

60 9-1.7

60 540

64 84.8 

70 95.4 

85 116 

175 685 

500 1,177 

592 1,715 

12« 291 

52 101 

47 91.1

47 597

Sept.

48 

47 

48 

49 

48

48 

50 

50 

62 

75

94 

110 

112 

83 

87

110 

110 

91 

87 

108

138 

133 

122 

120 

128

125 

117 

112 

115 

106

Runoff In 

acre-feet

10,790 

6,830 

5,640

390,600

5,210 

5.300 

7,140 

40,780 

72,400 

102,000 

17,890 

6,220 

5,420

267,600

peak above baa*. 

9 day.

b Stage-discharge relation affected by ioe.

Mote. No gage-halght record Oct. 1 to Nov. 12, MOT. 18 to Dec. 2, Jan. 16, 17 (stage-discharge 

relation affected by lee during part of periods), Sept. 2-13) dlaoharge computed on bails of discharge 

measurements Bade Oat. 28, Jan. 17, Sept. 13, weather records, and records for station near Maybell.
228 GRJEN RIVER BASIN

Yarapa River near Maybell, Colo.

Location.--Water-stage recorder, lat. 40°30', long. 108°02', in sec. 2, T. 6 N , R. 95 W 

3 lles east of Maybell. Datum of gage is 5,900.23 feet above mean sea level, datum of 

X929.

Drainage area. 3,410 square miles.

Records available.--April 1904 to October 1905, June 1910 to November 1912, April 1916 to 

September iybU (monthly discharge only October 1917 to September 1933).

Average discharge.--34 years (1916-50), 1,613 second-feet.

Extremes. Maximum discharge during year, 8,210 second-feet May 25 (gage height 7.29 feet)- 

minimum daily, 61 second-feet Sept. 8.

1904-5, 1910-12, 1916-50: Maximum discharge observed, 17,900 second-feet May 19, 

1917 (gage height, 10.4 feet, site and datum then in use, from floodmarks), from rating 

curve extended above 12,000 second-feet; minimum daily, 2 second-feet July 17-19, 1934.

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

which are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

Z2 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

182 

208 

232 

252 

256

264 

260 

340 

442 

436

418 

466 

442 

430 

484

525 

511 

478 

466 

466

460 

466 

430 

382 

406

430 

412 

400 

388 

382 

394

Nov.

40O 

355 

350 

370 

365

355 

345 

330 

320 

330

350 

355 

345 

312 

312

335 

360 

335 

316 

316

308 

292 

264 

252 

292

360 

376 

350 

345 

340

Dec.

325 

296 

268 

220 

208

228 

260 

276 

*292

316

280 

179 

182 

220 

195

205 

230 

255 

275 

270

260 

255 

265 

270 

265

250 

250 

255 

255 

250 

260

Jan.

270 

280 

285 

260 

240

250 

245 

230 

235 

240

235 

225 

225 

225 

*220

210 

220 

240 

245 

245

250 

260 

260 

260 

250

230 

235 

250 

260 

260 

260

Feb.

250 

240 

235 

245 

260

265 

275 

285 

290 

278

268 

260 

*265 

255 

250

260 

270 

280 

290 

2.85

280 

270 

270 

280 

310

320 

350 

370

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

38O 

360 

350 

365 

380

385 

370 

380 

42O 

511

472 

424 

*442 

430 

430

406 

448 

539 

602 

654

581 

466 

448 

424 

442

518 

574 

497 

412 

400 

382

Apr.

424 

560 

862 

382 

970

766 

880 

1,650 

2,600 

3,070

2,220 

1,710 

1,690 

2,080 

2,530

2,630 

2,240 

2,600 

3,020 

2,590

2,490 

2,980 

3,950 

4,740 

4,240

3,020 

2,710 

2,460 

2,620 

2,490

Secondfoot-days

12,108 

10,035 

7,815

671,773

7,600 

7,756 

13,892 

67,174 

136,720 

164,900 

39,459 

6,773 

5,728

479,960

Peak discharge (base. 7,000 sec. -ft.). May 25 (l p.m.

May

2,360 

2,320 

2,380 

2,420 

2,980

2,770 

2,590 

2,460 

2,240 

2,090

1,980 

2,160 

2,830 

3,440 

4,160

5,020 

5,420 

6,170 

6,700 

6,300

6,040 

6,210 

7,110 

7,850 

8,000

7,830 

5,910 

4,820 

4,660 

4,400 

5,100

Maximum

525 

400 

325

9,340

285 

370 

654 

4,740 

8,000 

7,560 

2,600 

430 

365

8,000

June

6,480 

7,180 

7,560 

6,850 

5,820

6,170 

7,060 

7,520 

6,480 

5,040

5,380 

6,100 

6,680 

6,720 

6,540

6,300 

5,970 

5,940 

5,730 

5,270

4,880 

4,450 

4,290 

4,070 

3,990

3,930 

3,610 

3,230 

2,930 

2,730

July

2,540 

2,370 

2,220 

2,110 

a2,200

a2,030 

al,900 

al,880 

a2,400 

a2,600

a2,200 

1,750 

1,610 

1,310 

1,130

a920 

a840 

a760 

694 

686

670 

602 

553 

504 

478

442 

424 

406 

406 

412 

412

Minimum

182 

252 

179

132

210 

235 

350 

382 

1,980 

2,730 

406 

102 

61

61

Aug.

430 

382 

350 

335 

312

308 

304 

296 

280 

268

260 

256 

244 

252 

240

220 

200 

186 

168 

156

147 

141 

135 

125 

120

118 

110 

110 

110 

108 

102

Mean

391 

334 

252

1,840

245 

277 

448 

2,239 

4,410 

5,497 

1,273 

218 

191

1,315

Sept.

92 

84 

70 

67 

66

66 

64 

61 

76 

80

92 

108 

128 

150 

176

224 

248 

268 

296 

288

280 

308 

365 

355 

320

300 

292 

284 

264 

256

Runoff in 

acre-feet

24,020 

19,900 

15,500

1,332,000

15,070 

15,380 

27,550 

133,200 

271,200 

327,100 

78,270 

13,430 

11,360

952,000

8,210 sec. -ft.; June 5 (3 p.m.) 8,040 sec.-

12:30 p.m.) 8,020 sec.-ft. 

* ¥inter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of discharge measurement made July 18, weather 

records, and records for stations on nearby streams.

Note. Stage-discharge relation affected by ice Dec. 15 to Mar. 9 (no gage-height record Jan. 9-14).
GREEN RIVER BASIN 229

Elk River at Clark, Colo.

Location. Water-stage recorder, lat. 40°43', long. 106°SS', in sec. 28, T. 9 N., R. 85 

w., just downstream from bridge on State Highway 129 in Clark and 1 mile upstream from 

Cottonwood Gulch. Datum of gage is 7,267.75 feet above mean sea level (State Highway 

bench mark).

Drainage area. 206 square miles.

Records available. May 1910 to November 1913, December 1913 to September 1922 (monthly 

aischarge only), published as Elk River near Clark, and October 1933 to September 1950 

in reports of Geological Survey/ May 1910 to September 1922 and April 1930 to September 1950 in reports of State engineer.

Average discharge. 32 years (1910-22, 1930-50), 359 second-feet.

Extremes.--Maximum discharge during year, 2,860 second-feet June 6 (gage height, 4.68 

1'eet J; minimum daily, 46 second-feet Sept. 5, 6, 8.

1910-22, 1930-50: Maximum daily discharge, 4,470 second-feet June 6, 9, 1912; minimum discharge observed, 22 second-feet Apr. 7, 1935 (gage height, 0.62 foot).

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

which are fair. Practically no diversion or regulation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

Z

3

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

82 

88 

100 

95 

86

85 

90 

94 

100 

105

HO 

100 

108 

120 

98

88 

83 

87 

92 

80

75 

70 

75 

74 

74

73 

73 

68 

85 

77 

59

Nov.

69 

74 

72 

74 

72

66 

65 

68 

71 

74

78 

72 

56 

*78 

78

72 

71 

69 

69 

62

54 

61 

74 

82 

90

86 

80 

78 

74 

62

Dec.

66 

58 

82 

59 

72

( )

7-1

70

Jan.

58 

( )

Feb.

( ll

Month

Goto 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Apri 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949 

nry

ter year 1949-5O .......................

Mar.

61 

57 

54 

58 

68

65 

60 

58 

68 

57

56 

56 

57 

57 

*53

52 

53 

54 

53 

54

52 

59 

59 

56 

57

54 

54 

56 

58 

58 

57

Apr.

54 

57 

62 

56 

54

66 

85 

92 

104 

92

88 

112 

137 

173 

200

218 

292 

348 

336 

376

510 

820 

956 

632 

485

407 

360 

344 

288 

268

Secondfoot-days

2,694 

2,151 

2,170

147,102

1,798 

1,848 

1,771 

8,072 

29,766 

55,110 

14,464 

3,072 

2,275

125,191

May

292 

316 

364 

416 

320

292 

284 

284 

284 

328

465 

612 

745 

872 

972

1,100 

1,340 

1,430 

1,300 

1,270

1,460 

1,710 

1,860 

1,930 

1,850

1,260 

1,140 

1,070 

1,070 

1,350 

1,780

Maximum

120 

90

2,380

68 

956 

1,930 

2,290 

1,080 

168 

121

2,290

June

1,940 

1,960 

1,700 

1,660 

1,920

2,210 

2,210 

1,690 

1,520 

1,740

2,050 

2,280 

2,290 

2,270 

2,270

2,290 

2,260 

2,05O 

1,850 

1,710

1,630 

1,720 

1,760 

1,800 

1,870

1,470 

1,370 

1,270 

1,200 

1,150

July

1,080 

980 

880 

820 

760

694 

626 

680 

652 

569

687 

574 

495 

440 

398

376 

348 

340 

332 

296

280 

257 

240 

229 

221

210 

2OO 

192 

208 

218 

182

Minimum

59 

54

50

52 

54 

284 

1,150 

182 

54 

46

46

Aug.

168 

159 

152 

148 

141

137 

126 

121 

117 

112

115 

119 

110 

106 

96

92 

86 

83 

82

77.

75 

74 

71 

69 

69

71 

65 

61 

59 

57 

54

Mean

86.9 

71.7 

70.0

403

58 

66 

57.1 

269 

960 

1,837 

467 

99.1 

75.8

343

Sept.

53 

54 

50 

47 

46

46 

47 

46 

61 

75

88 

121 

100 

92 

92

121 

102 

86 

83 

117

104 

90 

82 

75 

75

71 

66 

65 

64 

57

Runoff in 

acre-feet

5,340 

4,270 

4,300

291,700

3/570 

3,670 

3,510 

16,010 

59,040 

109,300 

28,690 

6,090 

4,510

248,300

Peak discharge (base, 1,900 sec.-ft.). May 24 (lo p.m.) 2,42O sec.-it.; 

sec.-ft.; June 16 (10 p.m.J 2,840 sec.-ft.; June 25 (6 a.m.) 2,1OO sec.-ft 

* Winter discharge measurement made on this day

ft.; June 6 (9 p.m.) 2,860
230 GREEN RIVER BASIN

Little Snake River near Dixon, Wyo.

Location.--Water-stage recorder, lat. 41°02', long. 107°32', In sec. 6, T. 12 N., R. 90 

W., bOO feet upstream from Willow Creek and 1 mile west of Dlxon. Datum of gage is 

6,332.81 feet above mean sea level, unadjusted.

Drainage area. 988 square miles.

Kecords available.--May 1910 to September 1923 (no winter records, monthly discharge only 

marcn 1914 to September 1916), March 1938 to September 1950.

Average discharge. 12 years (1938-50), 485 second-feet.

Extremes. Maximum discharge during year, 4,580 second-feet May 25 (gage height, 6.10 

feet); minimum dally, 7.5 second-feet Aug-. 25.

1910-23, 1938-50: Maximum discharge observed, 8,960 second-feet May 23, 1920 (gage 

height, 8.3 feet, datum then in use), from rating curve extended above 6,000 secondfeet; minimum daily, 0.6 second-foot Aug. 24-27, 1939.

Remarks. Records excellent except those for period of ice effect, which are fair. 

Diversions above station for irrigation.

Rating tables, water year 1949-5O, except period of ice effect

(gage height, in feet, and discharge, In second-feet)

(Shifting-control method used Oct. 1-7)

Oct. 1 to Dec. 31 Jan. 1 to Sept. 30

1.4 28 0.9 6.0 1.5 36 3.3 640 

1.6 44 1.0 8.5 1.7 58 3.6 920 

2.1 104 1.1 12 2.0 98 4.2 1,660 

2.4 160 1.2 16 2.3 152 5.2 3.05O 

1.3 21 2.6 235 5.9 4,220 

1.4 28 3.0 425

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6

7 

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.

29 

37 

37 

34 

34

52 

140 

126 

142 

154

138 

124 

126 

148 

144

134 

134 

130 

132 

132

126 

112 

112 

117 

118

112 

112 

104 

104 

122 

109

Nov.

97 

106 

107 

104 

101

100 

98 

94 

101 

104

112 

107 

94 

106 

120

114 

103 

103 

101 

98

84 

72 

75 

114 

107

114 

106 

109 

107 

96

Dec.

87 

77 

91 

81 

97

98 

98 

 100 

103 

106

75 

69 

66 

64 

64

90 

105 

100 

100 

96

92 

86 

84 

90 

94

86 

88 

90 

86 

86 

86

Jan.

90 

96 

92 

82 

76

66 

60 

62 

64 

70

70 

72 

76 

82 

*88

96 

100 

105 

110 

105

100 

100 

100 

100 

92

78 

78 

98 

96 

90 

88

Feb.

86 

80 

74 

80 

88

90 

90 

88 

80 

74

82 

82 

80 

*76 

72

72 

72 

72 

72 

76

80 

76 

30 

80 

80

82 

86 

90

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 194E 

&ry

ter year 1949-5O .......................

Mar.

82 

86 

92 

98 

105

105 

96 

94 

100 

115

115 

110 

*105 

105 

120

132 

154 

166 

159 

174

128 

138 

152 

142 

159

174 

150 

144 

136 

142 

179

Apr.

4 

1

1,

1, 

1, 

1, 

1, 

1,

1,

2, 

2,

2, 

1,

1, 

1, 

1, 

1, 

1,

Secondfoot-days

3,375 

3,054 

2,735

235,766.4

2,682 

2,24O 

3,957 

32,331 

78,210 

66,283 

5,458 

270.7 

606.9

201,200.6

214 

299 

330 

247 

220

315 

592 

986 

150 

748

576 

608 

739 

997 

220

170 

370 

580 

190 

130

490 

050 

660 

520 

660

480 

160 

370 

190 

070

May

1,110 

1,300 

1,250 

1,660 

1,300

1,100 

1,070 

1,100 

1,040 

1,010

1,160 

1,720 

2,210 

2,750 

3,140

3,250 

3,550 

3,950 

3,720 

3,380

3,330 

3,820 

4,080 

4,060 

4,180

3,310 

2,720 

2,860 

2,630 

2,880 

3,570

Maximum

154 

12O 

106

4,280

110 

90 

179 

2,660 

4,180 

3,630 

546 

11 

37

4,180

 Tune

3,600 

3,630 

3,14O 

2,740 

2,820

3,140 

3,420 

3,000 

2,430 

2,350

2,460 

2.69O 

2,750 

2,750 

2,680

2,520 

2,4OO 

2,240 

2,040 

1.830

1,620 

1,560 

1,440 

1,340 

1,400

1,150 

953 

820 

730 

640

July

546

490 

432 

365 

315

295 

275 

330 

425 

307

299 

283 

205 

152 

127

112 

96 

87 

71 

50

38 

24 

20 

18 

17

15 

14 

12 

11 

11 

12

Aug.

11 

11 

9.9 

9.2 

8.8

8.5 

8.2 

8.2 

8.2 

8.0

8.2 

8.8 

9.6 

9.6 

9.6

9.2 

8.2 

8.0 

8.0 

7.8

7.8 

8.0 

8.0 

8.0 

7.5

7.8 

8.8 

9.6 

9.6 

8.8 

8.8

Sept.

8.8 

8.8 

8.5 

8.5 

8.8

8.8 

8.5 

9.2 

11 

13

18 

22 

27 

28 

27

32 

37 

30 

24 

23

31 

30 

26 

22 

22

22 

20 

19 

20 

33

Minimum Mean *£*£

29 109 6,690 

72 102 , 6,060 

64 88.2 5,420

7.9 646 467,700

60 86.5 5,320 

72 80.0 4,440 

82 128 7,850 

214 1,078 64,130 

1,010 2,523 155,100 

640 2,209 131,500 

11 176 10,820 

7.5 8.73 537 

8.5 20.2 1,200

7.5 551 399,000

Peak discharge (base. 3,200 sec.-ft.). May 18 fl p.m.) 4.380 sec.-ft.; May 25 (7:30 p. 

sec.-ft.; June Z 12 p.m.i 4,02O sec.-ft.; June 7 (1:30 p.m.) 3,790 sec.-ft. 

* Winter discharge measurement made on this day. 

Hote. Stage-discharge relation affected by ice Dec. 13 to Mar. 15.

m.) 4,580
QREEN RIVER BASIN 231

Little Snake River near Lily, Colo.

Location. Water-stage recorder, lat. 40°32', long. 108°25', in sec. 20, T. 7 N., R. 98

" , 6 miles north of Lily and 10 miles upstream from mouth 

Drainage area. 3,730 square miles. 

Records available. June to August 1904, October 1921 to September 1950 (monthly discharge

only, October 1927 to February 1934). 

Average discharge. 29 years (1921-50), 602 second-feet. 

Jixtremes. Maximum discharge during year, 4,620 second-feet May 19 (gage height, 5 52

reetj; minimum daily, 3.1.second-feet Sept. 4-7.

1904, 1921-50: Maximum discharge, 14,200 second-feet May 27, 1926 (gage height,

10.5 feet), from rating curve extended above 3,600 second-feet; rto flow at times in

many years. 

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

poor. Diversions above station for irrigation.

Rating tables, water year 1949-50 (gage height, in feet,

and discharge,'In second-feet) 

{Shifting-control method used Oct. 1-2O, 

Oct. 28 to Dec. 11, Mar. 13-20, Aug. 10-24)

Oct. 1 to Dec. 31 Jan. 1 to $ept. 3O

0.5 8 1.3 122 1.8 290 O.4 1 l.O 51 2.3 550 

 6 18 1.5 170 2.1 51O .5 4 1.2 90 2.7 S80 

.8 41 1.6 202 2.5 85O .6 8 1.4 14O 3.4 1.6OO 

1.0 69 1.7 241 .7 14 1.7 236 4.3 2,750 

.9 37 2.0 365 5.4 4,42O

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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.

9.O 

14 

50 

37 

26

25 

30 

50 

107 

318

486 

374 

332 

814 

582

353 

225 

189 

176 

165

150 

150 

150 

168 

155

150 

148 

143 

143 

140 

134

Hov.

136 

140 

136 

124 

129

131 

131 

122 

120 

122

134 

134 

129 

131 

124

114 

120 

136 

136 

124

127 

118 

118 

112 

105

103 

124 

136 

134 

129

Dec.

129 

127 

122 

101 

1O5

89 

»1OO 

93 

127 

138

88 

80 

88 

92 

82

101 

100 

93 

92 

94

100 

99 

HO 

1O6 

100

94 

96 

98 

98 

99 

102

Jan.

78

Feb.

(») 

80

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

HAV

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter yeari949-50 .......................

Mar.

17O 

174 

178 

185 

195

21Q 

208 

2O5 

212 

235

225 

210 

 204 

222 

278

337 

346 

445 

681 

557

351 

342 

266 

251 

274

292 

365 

432 

287 

244 

244

Apr.

1,

1, 

1, 

1,

1, 

1, 

1, 

1, 

1,

1, 

1, 

1, 

2, 

2,

2, 

1, 

1, 

1, 

1,

Secondfoot-days

5,993.0 

3,779 

3,143

276,068.4

2,418 

2,240 

8,825 

35,151 

8O.22O 

71,220 

8,995 

348.4 

481.0

222,813.4

240 

283 

565 

587 

543

420 

398 

482 

937

280

40O 

39O 

010 

844 

862

280 

420 

100 

320 

380

ISO 

230 

7OO 

43O 

570

09O 

600 

490 

39O 

760

May

1,380 

1,260 

1,200 

1,480 

1.58O

1,900 

1,860 

1,330 

1,350 

1,250

1,22O 

1,2OO 

1,47O 

2,100 

2,740

3.21O 

3,340 

3,600 

4,090 

4,120

3.72O 

3,570 

3,810 

4,090 

4,300

4,230 

3,860 

2,830 

2,740 

2,640 

2,750

Maximum

814 

140 

138

4,870

681 

2.57O 

4,300 

3,740 

764 

27 

35

4,300

June

3,340 

3,690 

3,740 

3.51O 

2,880

2,820 

3,030 

3,450 

3,380 

2.60O

2.37O 

2,44O 

2,650 

2,S5O 

2,850

2,78O 

2,570 

2,480 

2,320 

2.10O

1,880 

1,670 

1,53O 

1,410 

1,350

1,3OO 

1,330 

1,090 

966 

844

July

764 

7O5 

624 

587 

530

476 

432 

392 

346 

356

509 

420 

365 

370 

314

251 

212 

179 

161 

158

140 

117 

1OO 

90 

82

70 

62 

62 

51 

40 

30

Aug.

26 

27 

25 

17 

24

21 

23 

20 

15 

11

11 

10 

6.O 

4.8 

5.6

5.6 

5.6 

5.6 

6.4 

8.0

7.6 

7.2 

6.8 

6.4 

6.4

6.8 

6.8 

5.6 

6.0 

6.0 

5.2

Minimum Mean

9.0 193 

1O3 126 

80 101

2.O 756

78 

80 

170 285 

240 1,172 

1,200 2,588 

844 2,374 

- 30 290 

4.8 11.2 

3.1 16.0

3.1 610

Sept.

4.S 

4.O 

3.7 

3.1 

3.1

3.1 

3.1

3.7 

5.6 

6.4

16 

12 

8.0 

6.4 

14

24

16 

12 

12 

18

29 

32 

29 

26 

29

33 

35 

32 

27 

30

Runoff in 

acre -feet

11,890 

7,500 

6,230

547,700

4,800 

4,440 

17,5OO 

69,720 

159, 1OO 

141,300 

17,840 

691 

954

442,000

Peak 'discharge (base, 3,500 sec . -ft . ) . May 19 (12:45 p.m.) 4.62O sec. -ft.; Hay 27 (4:45 a.m.)

4,560 sec.-ft.

* Winter discharge measurement made on thia day.

Hpte. Ho gage-height record Dec. 12 to Mar. 12 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 1 discharge measurement, weather records, and records 

for stations on nearby streams.

207364 0-52-16
232 GREEN RIVER BASIN

Battle Creek near Slater, Colo.

Location. Water-stage recorder, lat. 410 00', long. 107°15', in NW£ sec. 14, T. 12 N., R. 

HB w. (Colorado), at Wyoming-Colorado State line, a quarter of a mile upstream from 

mouth and 7 miles east of Slater. Datum of gage is 6,696.10 feet above mean sea level, 

adjustment of 1912.

Drainage area. 85.3 square miles.

Records available. October 1942 to September 1950.

Extremes. Maximum discharge during year, 905 second-feet June 1 (gage height, 2.99 feet), 

rrom rating curve extended above 370 second-feet; minimum daily, 4.5 second-feet Jan. 8. 

1942-56: Maximum discharge, 1,160 second-feet May 21, 1948, from rating curve extended above 310 second-feet; maximum gage height, 5.64 feet June 1, 1943; minimum daily 

discharge, 2.8 second-feet Sept. 14-17, 1948.

Remarks. Records fair except those below 8 second-feet and those for periods of ice effect 

or no gage-height trecord, which, are poor. Diversions above station for'irrigation .

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

7.0 

6.8 

6.5 

6.2 

6.2

11 

23 

22 

21 

16

10 

12 

18 

22 

24

20 

20 

20 

18 

20

15 

15 

15 

16 

14

15 

13 

13 

21 

15 

10

MOV.

13 

13 

12 

12 

11

11 

11 

13 

13 

12.

12 

10 

11 

14 

*13

10 

12 

11 

11 

11

10 

8.4 

9.0 

11 

11

11 

11 

10 

11 

8.6

Dec.

9.6 

10 

10 

9.8 

8.6

9.2 

10 

*10 

10 

10

10 

8.0 

6.8 

6.0 

5.4

6.6 

8.4 

9.2 

9.0 

8.6

8.0 

7.0 

7.4 

8.4 

8.6

8.2 

7.8 

8.0 

8.0 

7.8 

7.8

Jan.

8.2 

8.4 

7.4 

6.8 

6.4

5.4 

4.6 

4.5 

5.0 

5.4

5.8 

6.0 

6.6 

7.2 

7.6

*8.2 

8.8 

9.4 

10 

9.6

9.0 

9.2 

9.4 

8.2 

7.0

5.6 

6.6 

7.8 

8.8 

9.6 

9.4

Feb.

9.0 

8.4

7.2 

8.4 

9.0

9.4 

9.4 

9.0 

S.6 

7.6

7.6 

8.2 

8.6 

*8.8 

8.6

8.2 

7.8 

8.0 

8.2 

8.6

8.6 

8.4 

8.4 

8.8 

8.6

9.0 

9.4 

9.6

Month

Octo 

Hove 

Dece

Ca

janu 

Febr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Ha

mber. ...................................

lendar year 194£

ember. ..................................

ter year 1949-50 .......................

Paalc discharge (base. 750 sec. -ft.). May

Mar.

9.4 

9.8 

10 

11 

11

11 

11 

11 

12 

12

12 

12 

12 

 14 

15

16 

17 

15 

15 

16

12 

13 

13 

12 

12

13 

12 

12 

12 

13 

14

Apr.

16 

20 

18 

18

21

*26 

48 

76 

74 

52

44

52 

73 

107 

125

131 

155 

160 

129 

131

176 

235 

266 

192 

133

114* 

96 

120 

98 

94

Secondfoot -days

471.7 

337.0 

262.2

40.-076.2

231.9 

239.4 

390.2 

3,000 

10,588 

14,092 

1,928 

298.2 

312.7

32,151.3

May

98 

105 

122 

131 

111

98 

96 

88 

86 

82

111 

171 

232 

296 

347

385 

480 

520 

496 

468

512 

625 

684 

643 

580

406 

402 

452 

444 

589 

728

Maximum

24 

14 

10

930

10 

9.6 

17 

266 

728 

733 

164 

13 

18

733

June

733 

702 

548 

516 

589

679 

692 

524 

432 

448

516 

584 

630 

620 

612

584 

560 

506 

456 

402

366 

350 

332 

314 

317

260 

235 

210 

195 

176

July

Minimum

6.2 

8.4 

5.4

5.4

4.5 

7.2 

9.4 

16 

82 

176 

15 

8.2 

8.6

4.5

164 

155 

140 

127 

114

105 

96 

109 

100 

82

96 

74 

58 

47 

46

43 

38 

38 

34 

31

30 

26 

25 

24 

22

20 

19 

18 

17 

15 

15

Aug.

13 

13 

12 

12 

11

10 

11 

 11 

11 

10

10 

11 

10 

10 

10

8.6 

8.2 

8.2 

8.2 

8.2

8.2 

8.2 

8.2 

8.2 

8.2

8.2 

8.2 

8.6 

8.6 

8.6 

8.6

Mean

15.2 

11.2 

8.46

110

7.48 

8.55 

12.6 

100 

342 

470 

62.2 

9.62 

10.4

88.1

Sept.

8.6 

8.6 

8.6 

8.6 

8.6

8.9 

8.9 

8.9

e.e

8.6

11 

11 

11 

11 

12

ie

15 

11 

11 

15

12 

11 

9.6 

9.6 

9.6

9.6 

9.6 

9.6 

9.6 

9.6

Runoff In 

acre-feet

936 

668 

520

79,490

460 

475 

774 

5,950 

21,000 

27,950 

5,820 

591 

620

63,760

22 (9:30 p.m.) 828 sec. -ft.j June 1 (10:30 p.m.) 905 sec.

ft.; June 6 (11 p.m.; 86O sec.-ft.

* Winter discharge measurement made on this day.

SSj&r Stage-discharge relation affected by Ice Nov. 22-25, Dec. 4, 8, 11-16, Feb. 27 to Mar. 25, 

Mar. 27, 28. No gage-height record Dec. 17 to Feb. 26 (stage-discharge relation affected by Ice 

during entire! period); discharge computed on basis of 2 discharge measurements, weather records, and 

records for stations on nearby streams.
GREEN RIVER BASIN 233

Slater Pork near Slater, Colo.

Location.--Water-stage recorder, lat. 40°59', long. 107°23', In SVf£ sec. 21, T. 12 N., R. 

H9 w., about 1 mile upstream from mouth and \\ miles south of Slater.

Drainage area. 161 square miles.

Records available. May 1910 to May 1912 and October 1933 to September 1950 in reports of 

Geological' Survey. May 1910 to May 1912 and June 1931 to September 1950 in reports of 

State engineer.

Average discharge. 19 years (1931-50), 73.7 second-feet.

Extremes.--Maximum discharge recorded during year, 998 second-feet May 18 (gage height, 

V.B6 feet), from rating curve extended above 800 second-feet; minimum daily, 2.3 secondfeet Aug. 20.

1910-12, 1931-50: Maximum daily discharge, 1,700 second-feet May 19, 1912; no flow 

Aug. 2-10, 1934, Aug. 18, 25-27, 1936.

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

Diversions above station for irrigation.

Revisions. W 764: Drainage area.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

14 

15

16 

14 

14

42 

36 

32 

33 

34

27 

27 

30 

31 

30

28 

27 

29 

30 

27

24 

22 

25 

24 

24

24 

24 

22 

26 

28 

19

Nov.

24 

23 

22 

21 

20

18 

20 

20 

18 

18

20 

16 

17 

21 

21

16 

18 

17 

17 

17

13 

18 

24 

23 

20

20 

19 

20 

19 

14

Dec.

17 

14 

20 

16 

18

18 

18 

*18 

21 

19

14 

11 

16 

19 

15

17 

20 

21 

22 

22

22

18

Jan.

20

Feb.

21

Month

Oeto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter yeari949-5o .......................

Mar.

16 

20 

26 

23 

25

27 

22 

21 

24 

23

22 

18 

18 

26 

21

20 

23 

27 

23 

24

20 

20 

22 

22 

25

25 

21 

24 

23 

19 

26

Apr.

30 

36 

38 

28

25

36 

63 

93 

93 

64

62

71 

87 

109 

125

124 

162 

198 

160 

158

253 

392 

496 

434 

250

219 

170 

216 

160 

144

Secondfoot-days

798 

574 

558

38,735.2

62O 

588 

696 

4,496 

13,297 

10,674 

1,406 

152.8 

378.4

34,238.2

May

155 

180 

185 

245 

165

143 

137 

140 

134 

138

181 

285 

413 

492 

592

624 

703 

769 

622 

582

608 

703 

719 

686 

811

481 

435 

425 

430 

490 

624

Maximum

42 

24 

22

893

27 

496 

811 

584 

106 

10 

23

811

June

580 

584. 

492 

414 

444

517 

560 

408 

380 

375

410 

458 

451 

435 

427

413 

402 

357 

325 

295

270 

250 

240 

230 

237

177 

155 

140 

129 

119

July

106 

97 

85 

74 

66

67 

57 

86 

97 

71

88

71 

56 

47 

40

34 

30 

27 

28 

22

19

18 

16 

14 

15

14 

12 

13 

13 

12 

11

Minimum

14 

13 

11

5.4

16 

25 

134 

119 

11 

2.3 

3.2

2.3

Aug.

10 

9.9 

9.0 

8.4 

7.2

6.7 

5.8 

5.8 

5.4 

4.5

3.3 

3.8 

5.6 

6.3 

6.1

4.6 

3.4 

3.5 

3.0 

2.3

2.7 

4.2 

4.3 

3.6 

3.3

3.5 

3.7 

3.2 

3.1 

3.2 

3.4

Mean

25.7 

19.1 

18.0

106

20 

21 

22.5 

150 

429 

356 

45.4 

4.93 

12.6

93.8

Sept.

3.2 

3.3 

3.7 

3.8 

3.7

3.6 

3.9 

5.6 

6.0 

9.6

13 

23 

22 

15 

15

19 

18 

13

12

15

21 

19 

17 

19 

19

17 

15 

14 

13 

13

Runoff In 

acre-feet

1,580 

1,140 

1,110

76,840

1,230 

1,170 

1,380 

8,920 

26,370 

21,170 

2,790 

303 

751

67,910

Peak: discharge (base, 450 sec.-ft.).--Apr. 24 (l:3O a.m.) 690 sec.-ft.5 May 18 (3 a.m.) 998 sec.- 

.; May 25 (6 a.m.) 978 sec.-ft.; May 31 (2 a.m.) 747 sec.-ft.; June 7 (2 a.m.) 660 sec.-ft.; June 

(1 a.m.) 532 sec.-ft.
234 OREEN RIVER BASIN

Savery Creek near Savery, Wyo.

Location. Mater-stage recorder, 1st. 41i *06'00", long. 107"22i50", In Sw£ sec. 14, T. 13 N., 

H. eg W., IT; miles downstream from Loco Creek and 6^ miles northeast of Savery.

Drainage area. 330 square miles.

Records available. October 1941 to September 1946, October 1947 to September 1950.

Extremes. Maximum discharge during year, 1,160 second-feet May 17 (gage height, 5.46 feet), 

rrom rating curve extended above 730 second-feet; minimum dally, 11 second-feet Aug. 84.

1941-46, 1947-50: Maximum discharge, 1,630 second-feet May 17, 1949 (gage height, 

6.07 feet), from rating curve extended above 730 second-feet; minimum dally, 1.8 secondfeet Sept. 9, 1948.

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

which are fair. Many diversions, above station for Irrigation.

Rating tables, water year 1949-50, except periods of Ice effect

(gage height. In feet, and discharge, in second-feet)

(Shifting-control method used Nov. 24-27. 29, 30,

Dec. 1, 7-10, May 18, Sept. 14-25)

Oct. 1 to May 17 May 18 to Sept. 30

2.7 14 3.6 155 2.7 8 3.2 52 4.4 43O 

2.8 19 3.9 255 2.8 12 3.4 86 4.9 740 

2.9 27 4.2 380 2.9 18 3.6 13O 5.2 950 

3.0 38 4.6 590 3.0 27 3.9 210 

3.3 84 5.1 910 3.1 38 4.1 285

Discharge, in second-feet, water year October 1949 to Sept«»fcer 1950

Day

1 

2

3

4 

5

6 

7 

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.

15 

18 

18 

18 

20

22 

29 

34 

39 

52

42 

36 

45 

51 

45

39 

36 

35 

34 

35

36 

34 

36 

38 

39

41 

38 

36 

37 

38 

37

Mov.

34 

34 

32 

31 

28

28 

28 

29 

30 

31

35 

32 

30 

36 

 35

35 

32 

31 

30 

29

28 

28 

27 

37 

31

30 

29 

32 

31 

28

Dec.

28 

27 

26 

27 

29

29 

29 

 28 

30 

31

31 

30 

28 

27 

27

30 

33 

34 

34 

33

31 

30 

31 

32 

32

30 

31 

31 

31 

31 

32

Jan.

33 

33 

32 

27 

28

26 

26 

26 

26 

26

27 

28 

28 

27 

27

 27 

28 

29 

33 

33

33 

33 

35 

35 

32

30 

33 

36 

38 

36 

35

Feb.

34 

33 

33 

34 

37

42

42 

40 

37 

39

42 

42 

41 

 39 

38

38 

39 

39 

39 

40

41 

39 

40 

41 

42

43 

44 

44

Month

Octo 

Move 

Dece

Ca

Janu 

Febn 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194S .......................

ter year 1949-50 .......................

Mar.

43 

42 

42 

42 

43

44 

44

38 

45

4E

40 

38 

40 

 40 

41

39 

41 

44

41 

43

41 

43 

42 

43 

45

48 

45 

43 

44

51 

51

Apr.

61 

77 

84

72 

74

 101 

152 

238 

252

164

130 

138 

161 

227 

319

344

402 

430 

362 

353

450 

650 

801 

620 

389

353 

299 

358 

307 

271

Secondfoot-days

1,073 

931 

935

55,713.5

946 

1,102 

1,331 

8,689 

17,871 

10,961 

1,652 

451 

598

46,538

May

279

323 

323 

412 

311

2S7 

275 

311 

311 

299

362 

508 

638 

820 

820

814 

654 

922 

831 

726

719 

810 

79« 

761 

705

598 

592 

598 

580

616 

670

Maxlnum

52 

37 

54

1,210

38 

44

51 

801 

922 

652 

113 

21 

34

922

June

652 

628 

562 

502 

490

532 

574 

508 

420 

395

395 

425 

436 

425 

415

395 

370 

345 

308 

277

253 

234 

217 

201 

214

198 

172 

155 

138 

125

July

113 

104 

100 

90 

86

81

73 

73 

73 

72

72 

72 

60 

52 

49

42

39 

38 

37 

36

31 

29 

29 

26 

25

25 

24 

25 

26 

26 

24

Aug.

Minimus NMn

15 34.5 

27 31.0 

28 30.1

6.6 147

26 30.5 

33 3».4 

3» 42.9

61 290 

275 576 

125 365 

24 55.5 

11 14.5 

14 19.9

11 128

21 

20

17 

17 

17

16 

16 

14 

14

13

14 

14 

15

15 

13

13 

13 

12 

12 

12

12 

12 

12 

11 

12

14 

15 

16 

17 

17 

15

S«pt.

15 

15 

15 

15 

14

15 

15 

15 

15 

16

17 

18 

19 

20 

27

34 

28

22 

21

27

29 

31 

28 

22 

21

19 

17 

16 

15 

17

Runoff in

acre-fe*t

2,150 

1,850 

1,850

10«,500

1,880 

2,190 

2,640 

17,230 

35,450 

21,740 

5,280 

895 

1,190

92,320

Peak- discharge (base. 300 sec.-ft.) . Apr. 18 (S a.m.) 519 sec.-ft. J Apr. 23 (4>30 a.m.) 882 sec.- 

ft.; May 17 (l5 p.m.) 1,160 sec.-ft.

* Winter discharge measurement made on this day.

Mote. Stage-discharge relation affected by ice Nov. 22, 23, 28, Dec. 2-6, Dec. 11 to Mar. 14 (no 

gage-height record Jan. 4-15, Jan. 26 to Mar. 13; discharge computed on basis of 1 discharge measurement, weather records, and records for nearby stations), Mar. 16, 19-24, 27-29. No gage-height 

record Aug. 17 to Sept. 13; discharge computed on basis of weather records and records for nearby 

stations.
GREEN RIVER BASIN 235

Brush Creek above cave, near Vernal, Utah

Location.--Water-stage recorder, lat. 40°42', long. 109°36', in sec. 29, T. IS., R. 21 

K., at road bridge a quarter of a mile downstream from Government Creek, 1 mile upstream 

from cave, and 17} miles northwest of Vernal.

Records available.--April 1946 to September 1950.

Extremes.--Maximum discharge during year, 199 second-feet May 24 (gage height, 3.92 feet); 

minimum not determined, occurred during period of no gage-height record.

1946-50: Maximum discharge, 234 second-feet May 8, 1947 (gage height, 4.22 feet); 

minimum recorded, 0.1 second-foot 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-feet). (See records

for Oaks Parks Canal p. 238.)

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.1 

1.9 

1.8 

1.6 

1.8

1.8 

2.0 

2.3 

2.4 

2.3

2.2 

2.4 

*2.8 

3.1 

2.8

2.6 

2.8 

5.9 

2.9 

4.3

3.0 

2.9 

2.9 

2.7 

2.5

2.5 

Z.4 

2.3 

2.3 

2.3 

b2.3

Nov.

. b2.3

(») 

2.5 

2.4 

2.8

4.0 

2.7 

2.4 

2.4 

2.3

2.3 

2.2 

2.1 

2.2 

2.1

b2.1 

b2.1 

2.1 

2.2

2.2

2.1 

2.1 

2.1 

b2.1 

b2.1

Dec.

b2.0 

bl.9 

1.8 

bl.8 

1.8

1.8 

2.0 

2.0 

2.1 

2.0

2.1 

1.8

Jan.

1.5

Month

Octo 

Hove

Deoe

Ca

janu 

Pebr 

Marc 

Apri 

Mav

June 

July 

Augu 

Sept

Wa

Feb.

1.2 

(*)

lendar year 1949

ter year 1949-50 ...............

Mar.

1.2

1.3

Apr.

1.6 

1.5 

1.4 

1.4 

1.6

1.9 

2.3 

2.8 

2.5 

2.3

2.3 

2.6 

3.0 

3.6 

3.4

3.5 

3.7 

4.1 

*4.5 

5.2

8.1 

16 

29 

29

26

22 

21 

21 

20 

17

Secondfoot-days

79.9 

69.7 

57.3

4,633.5

46.5 

33.6 

38.8 

264.3 

1,634.6 

1,886 

366.2 

163.6 

120.3

4,760.8

May

16 

15 

15 

13 

14

14 

11 

12 

9.6 

11

10 

11 

13 

19 

28

39 

62 

80 

78 

87

105 

110 

115 

127 

103

65 

70 

80 

94 

108 

99

Maxima

5.9 

4.0

136

29 

127 

100 

19 

8.1 

5.6

127

June

89 

71 

58 

52 

52

50 

61 

100 

96 

97

99 

100 

96 

92 

86

80 

73 

66 

66 

63

58 

48 

40 

36 

34

30 

27 

25 

22 

19

July

18 

19 

18 

18 

19

17 

16 

18 

15 

13

15 

15 

11 

8.8 

8.6

7.9 

5.3 

7.3 

9.7 

12

8.4

8.9 

9.4 

7.9 

7.9

8.8 

9.7 

8.8 

8.4 

8.2 

8.2

Minimum

1.6

-

1.4 

9.6 

19 

5.3 

3.4 

2.5

-

Aug.

8.1 

7.1 

6.8 

6.7 

6.5

6.3 

6.2 

5.6 

5.6 

5.4

5.6 

5.7 

6.0 

6.0 

6.0

5.4 

5.2 

5.0 

5.0 

4.9

4.7 

4.4 

4.2 

4.1 

4.3

4.2 

4.0 

3.8 

3.8 

3.6 

3.4

Mean

2.58 

2.32 

1.85

12.7

1.50 

1.20 

1.25 

8.81 

52.7 

62.9 

11.8 

5.28 

4.01

13.0

Sept.

3.1 

2.5 

3.3 

3.5 

3.5

3.7 

3.6 

4.0 

4.9 

5. -5

4.9 

4.5 

4.4

4.2 

4.0

3.8 

3.7 

3.7 

4.4

5.6

4.3

4.0 

4.7 

5.0 

4.3

3.6 

3.6 

3.5 

3.3 

3.3

Runoff In 

acre-feet

158 

138 

114

9,200

92 

67 

77 

524 

3,240 

3,740 

726 

324 

239

9,440

* Winter discharge measurement made on this d»y.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 12 to April 18 (stage-discharge relation affected by ice during 

most of period), May 26-29; discharge computed on basis of 1 discharge measurement, engineers' notes, 

westher records, and records for nearby stations.
236 GREEN RIVER BASIN

Brush Creek near Vernal, Utah

Location.--Water-stage recorder, lat. 40°35', long. 109°26' , in NW^NE^ sec. 10, T. 3 S.; 

 K. yy E., 2 miles upstream from Little Brush Creek and 10 miles northeast of Vernal.

Drainage area. 82 square miles.

Records available.--March 1939 to September 1950.

Average discharge.--11 years, 40.3 second-feet.

Extremes.--Maximum discharge during year, 264 second-feet Apr. 23 (gage height, 3.40 feet); 

minimum, 12 second-feet Mar. 13.

1939-50: Maximum discharge, 433 second-feet June 23, 1947 (gage height, 5.08 feet), 

resulting when dam in fish pond upstream was blasted out, from rating curve extended 

above 250 second-feet; minimum recorded, 7 second-feet Jan. 2, 1940, but may have been 

less during periods of ice effect.

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

which are fair. Two small diversions above station for irrigation. Water from Oaks 

Park Reservoir on headwaters (capacity, 6,250 acre-feet) is diverted above station to 

Ashley Creek Basin for irrigation. (See records for Oaks Park Canal p. 238.)

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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 

15 

15 

14 

16

15 

16 

25 

20 

18

al9

a!50 

a 130 

alOO

a5O 

a25

a2o

Nov.

a20

20 

21 

21 

21

21 

20 

30 

20 

21

21 

20 

20 

20

20

20 

20 

19 

19 

19

18 

18 

18 

18 

18

18 

18 

18 

18 

18

Dec.

18 

18 

18 

18 

18

18 

18 

*18 

18 

19

18 

18

[ b!8

18 

18 

18 

17

a!7

Jan.

a!7

(*)

a!6

Feb.

a!5 

*15

Month

Octo 

Nove 

Dece

Ca

Janu 

Febn 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

15 

15 

15 

15 

15

15 

15 

14 

14 

15

14 

13 

*b!3 

14 

14

14 

14 

14 

14 

15

15 

15 

15 

15 

15

15 

14 

14 

14 

14 

14

Apr.

15 

17 

16 

15 

15

17 

19 

23 

25 

22

20 

20 

21 

23 

28

26 

27 

« 30 

35 

37

45

68 

128 

162 

140

132 

122 

127 

104 

96

Secondfoot-days

938 

583 

547

17,871

506 

420 

447 

1,575 

5,095 

5,589 

1,195 

787 

605

18,287

May

92 

94 

94

92 

82

80 

79 

74 

74 

70

70 

77 

85 

105 

136

164 

188 

230 

238 

238

240 

245 

249 

254 

257

249 

244 

242 

243 

8250 

a26O

Maximum

150 

21 

19

250

16 

162 

260 

250 

58 

32 

26

260

June

a250 

a240 

a230 

a220 

231

223

217 

220 

225 

226

227 

230 

235 

234 

232

230 

222 

209 

196 

186

174 

159 

139 

116 

108

97 

88 

85 

75 

65

July

58 

55 

53 

50 

47

46 

45 

45 

46 

43

54 

45

37 

34 

32

33 

32 

32 

33 

34

32 

30 

32 

30 

30

31 

32 

32 

31 

30 

31

Minimum

14 

18

-

13 

15 

70 

65 

30 

20 

18

-

Aug.

32 

31 

30 

30 

30

28 

27 

27 

26 

25

26 

27 

27 

27 

27

26 

25 

25 

25 

24

24 

24 

23 

23 

22

22 

22 

21 

21 

20 

20

Mean

30.3 

19.4 

17.6

49.0

16.3 

15 

14.4 

52.5 

164 

186 

38.5 

25.4 

20.2

50.1

Sept.

19 

19 

19 

20 

19

19 

19 

21 

26 

22

22 

19 

19 

19 

19

18 

18 

19 

21 

24

21 

21 

21

22 

22

21 

19 

19 

19 

19

Runoff In 

acre-feet

1,860 

1,160 

1,080

35,440

1,000 

833 

887 

3,120 

10,110 

11,090 

2,370 

1,560 

1,200

36,270

Peak discharge (base, 14O sec.-ft.).--Apr. 23 (11:30 p.m.) 264 sec.-ft.; May 25 (2:OO a.m.) 260 

sec.-ft.; July 11 (3:00 p.m.) 206 sec.-ft.

* Winter discharge measurement made on this day.

a No gage height record; discharge computed on basis of 2 discharge measurements, recorded range In 

stage, weather records, and records for nearby stations.

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 237

Brush Creek near Jensen, Utah

Location --Water-stage recorder, lat. 40°24', long. 109°21', in SWv sec. 4, T. 5 S., R. 23 

E., about 2,000 feet above mouth and 85 miles north of Jensen.

Records available.--April 1939 to September 1950. 

Average discharge. 11 years, 24.7 second-feet.

Extremes. Maximum discharge during year, 521 second-feet Oct. 19 (gage height, 3.89 

reet); minimum daily, 0.2 second-foot Oct. 1-6.

1939-50: Maximum discharge observed, 900 second-feet Aug. 17, 1941 (gage height, 

5.50 feet, site and datum then in use), from rating curve extended above 250 secondfeet; no flow for many days in some years.

Remarks.--Records fair except those for periods of ice effect, doubtful, fragmentary,

or no gage-hpight record, which are poor. Many diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

1 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

dQ.2

d.2 

d.2 

d.2

.2

.2 

4.2 

d4.9 

d3.5 

d2.5

d2.5 

2.4 

2.3 

2.1 

2.0

2.1 

1.4 

1.4 

138 

d90

d40 

d25 

d!5 

dll 

d8.5

d7.5 

d6.6 

d6.2 

d6.0 

d6.0 

d6.0

Nov.

' d6.0

15

16 

11 

11 

11 

11

11 

11 

11 

13 

13

12 

12 

12 

12 

14

18 

18 

18 

18 

*16

Dec.

14 

13 

13 

b!3 

b!3

b!3 

15 

b!4 

14 

16

16 

(*)

b!5 

a!5

Jan.

. *a!3

(*) 

b!3

Feb.

, *bll

Month

Oeto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

Lendar year 1949

ter year 1949-50 .......................

Mar.

(*) 

, bll

7.8 

8.6 

14

16 

8.6 

9.6 

11 

13

*22 

33 

45 

22 

22

21 

21 

21 

28 

39

29 

21 

17 

16 

17 

19

Apr.

27 

35 

37 

18 

16

16 

20 

25 

37 

38

35 

24 

22 

22 

49

52 

44 

43 

45 

53

64 

85 

145 

f!86 

158

143 

122 

136 

112 

78

Secondfoot-days

398.3 

338.0 

454

10,096.6

403 

308 

558.6 

1,887 

3,624 

3,382.0 

28.5 

17.9 

75.0

11,474.3

May

66 

f64 

66 

66 

54

46 

46 

48 

43 

31

30 

41 

50 

64 

88

101 

143 

f!60 

212 

199

186 

196 

194 

194 

196

189 

182 

170 

167 

167 

165

Maximum

138 

18

165

45 

186 

212 

165 

2.8 

1.3 

14

212

June

165 

165 

163 

163 

156

145 

138 

136 

136 

136

136 

134 

136 

132 

128

12S 

126 

122 

122 

120

118 

114 

95 

75 

57

40 

37 

33 

19 

7.0

July

2.8 

1.4 

1.2 

1.1 

1.2

1.3 

. al.O

a. 5

Minimum

0.2

-

7.8 

16 

30 

7.0

.9

.2

Aug.

aO.5

.5 

.6

.7 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.5 

.6 

.6 

1.3

Mean

12.8 

11.3 

14.6

27.7

13.0 

11.0 

18.0 

62.9 

117 

113 

.92 

.58 

2.50

31.4

Sept.

1.3 

1.0 

.8 

.9 

.9

1.0 

1.0 

1.1 

1.0 

2.2

1.4 

1.4 

1.1 

1.0 

1.1

1.0 

1.1 

1.1 

2.1 

14

8.6 

3.5 

3.5 

3.3 

4.2

4.2 

3.0 

3.0 

2.6 

2.6

Runoff in 

acre-feet

790 

670 

900

20,030

799 

611 

1,110 

3,740 

7,190 

6,710 

57 

36 

149

22,760

* Winter discharge measurement made on this day.

a (Jo gage-height record; discharge computed on basis of 2 discharge measurements, weather records, 

and records for nearby stations.

b Stage-discharge relation affected by ice.

d Doubtful gage-height recordj discharge computed on basis of 1 discharge measurement and records 

for nearby stations.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
dde GREEN RIVER BASIN

Oaks Park Canal near Vernal, Utah

Location. Water-stage recorder, lat. 40°44', long. 109°38', in SE£ sec. 12, T. IS., R. 

2TTET, 1,000 feet downstream from Oaks Park Dam and 200 feet downstream from point of 

diversion from Brush Creek.

Records available. April 1946 to September 1950.

Extremes.--Maximum discharge during year, 55 second-feet Aug. 12, 13 (gage height, 5.37 

feet); no flow Oct. 15 to July 19.

1946-50: Maximum discharge, that of Aug. 12, 13, 1950; no flow at times.

Remarks. Records good. Canal diverts from Brush Creek water which has been stored in 

oaks Park Reservoir for irrigation in Ashley Creek Basin.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

15 

14 

14 

14 

14

14 

14 

14 

13 

12

12 

10 

8.6 

2.9 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov. Dec. Jan. Feb.

Month

Octo 

Nove 

Dace

Ca

Janu. 

Febn 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Ha

nber. ...................................

lendar year 1949

ter year 1949-50 .......................

Mar. Apr.

Secondfoot-days

171.5 

0 

0

2,721.1

0 

0 

0 

0 

0 

0 

292.0 

1,298 

632

2,393.5

May

Maximum

15 

0 

0

47

0 

0 

0 

0 

0 

0 

49 

55 

34

55

June July

0 

0 

0 

0 

0

0 

0 

0 

O 

0

0 

0 

0 

0 

0

0 

0 

0 

0

.1

.9 

3.0 

7.0 

12 

26

35 

38 

38 

40 

43 

49

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

26 

11

0

Aug.

51 

52 

52 

52 

52

52 

51 

45 

45 

45

44 

48 

55 

54 

50

46 

46 

46 

44 

43

43 

32 

29 

29 

29

29 

28 

27 

27 

26 

26

Mean

5.53 

0 

0

7.46

0 

0 

0 

0 

0 

0 

9.42 

41.9 

21.1

6.56

Sept.

26 

28 

34 

33

33

32 

28 

30 

29 

28

28 

30 

28 

22 

20

18 

16 

16 

16 

13

12 

12 

12 

13 

13

13 

14 

13 

11 

11

Runoff In 

acre-feet

340 

0 

0

5,400

0 

0 

0 

O 

0 

0 

579 

2,570 

1,250

4,740
GREEN RIVER BASIN 239

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

Location. Water-stage recorder, lat. 40°46', long. 1090 32', in SW£ sec. 2, T. 1 S., R.

ZT~E7, 2 miles downstream from East Park Reservoir and 20 miles north of Vernal. 

Records available. July 1949 to September 1950. 

Extremes.--Maximum discharge during period, 409 second-feet May 30 (gage height, 4.43

feet'7; minimum, 0.8 second-foot Sept. 22, Oct. 5, 1949. 

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

which are poor. Flow regulated by East Park Reservoir.

Discharge, in second-feet, 1949-50 

1949

Day

1

2

3

4

5

6

1

8

9

10

July

-

-

-

-

-

-

-

-

-

-

Aug.

7.2

7.2

20

28

27

38

26

26

25

24

Sept.

1.5

1.8

1.5

1.5

1.4

1.2

1.2

1.2

1.4

1.6

Day

11

12

13

14

15

16

17

18

19

20

July

_

_

_

.

_

_

_

_

_

_

Aug.

24

22

22

21

20

19

20

20

19

18

Sept.

2.2

1.4

1.3

1.3

1.2

1.1

1.1

.9

l.O

.9

Day

21

22

23

24

25

26

27

28

29

30

31

July

_

8.9

8.9

8.9

9.2

8.4

8.1

8.1

7.8

7.5

7.5

Aug.

15

8.0

2.5

2.3

1.8

1.6

1.5

1.6

1.5

1.5

1.8

Sept.

0 9

8

9

9

9

9

9

1 O

1 6

1 6

-

Day

1

2

3

4

5

6

7

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.

1.4

1.2

1.1

1.0

.9

1.0

1.6

1.8

3.1

1.6

1.6

1.9

*2.2

2.5

2.8

2.6

b3.0

b6.0

b7.0

b9.0

b6.0

b5.O

b4.9

b4.7

b4.5

b4.2

b4.0

b3. 9

b3.8

b3.8

b3.7

Nov.

.

1

\ b3.7

1

J

b3.6

b4.5

b7.0

b5.O

b4.5

4.0

3.7

3.5

3.3

*b3.1

b2.9

b2.7

b2.6

> b2.5

~

Dec.

. t>2.5

2.O

Jan.

1.8

Feb.

1.5

-

-

T

Mar.

1.5

1.7

Apr.

2.1

2.0

1.9

1.9

2.2

2.6

3.0

3.4

3.2

3.0

3.1

3.7

4.2

4.6

4.3

4.6

5.0

5.4

6.0

b!2

b20

b20

4O

4O

38

36

34

32

30

28

-

May

27

25

24

23

23

22

21

21

20

2O

2O

24

3O

40

55

65

80

90

85

100

114

130

138

142

124

80

110

17O

164

271

314

June

307

253

170

148

159

196

194

134

115

121

131

129

118

106

94

85

76

69

63

59

54

48

42

37

35

31

28

25

24

21

-

July

21

21

19

18

18

17

17

16

16

15

15

14

13

12

12

12

12

12

13

13

11

11

10

11

10

10

10

10

10

11

26

Aug.

26

26

25

25

24

24

24

23

22

22

22

21

21

19

18

18

17

16

16

15

14

12

6.5

2.9

2.8

2.8

2.3

2.1

2.1

1.9

1.8

Sept.

1.6

1.5

1.5

1.5

1.5

1.5

1.5

1.6

3.1

4.2

3.1

2.5

2.3

2.3

2.3

2.1

1.9

1.6

2.5

5.9

4.6

3.8

4.4

4.0

3.3

2.6

2.2

2.1

1.9

1.6

-

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Dec. 11 to Apr. 19 (stage-discharge relation affected by ice most of 

period), Apr. 23 to May 20, May 26, 27j discharge computed on basis of weather records and records 

for nearby stations.

Monthly discharge, in second-feet, 1949-50

Month

September. .........'.........................

Water year .......................

December. ...................................

Calendar year .......................

Hay. ........................................

September. ..................................

Water yeai 1949-5O .......................

Seoondfoot-days

37.1

-

101*. 8

102.2

67.0

475 2

76.5

7,446.4

Maximum

28

2.2

-

9.0

7.0

5.9

314

MinimuB

1.5

.8

-

.9

-

1.5

.9

Mean

8.33

14.9

1.24

-

3.28

3.41

2.16

2.55

20.4

Runoff in 

acre-feet

165

917

74

1,160

202

203

133

152

14,77O
240 GREEN RIVER BASIN

Little Brush Creek near Vernal, Utah

Location.--Water-stage recorder, lat. 40°43', long. 109°30', in SE^ sec. 24, T. IS., R. 

iil E., half a mile upstream from cave, three-quarters of a mile upstream from Kane 

Hollow, and 17'\ miles north of Vernal.

Drainage area.--28 square miles.

Records available.--October 1945 to September 1950.

Extremes.--Maximum discharge during year, 608 second-feet May 30 (gage height, 3.71 feet); 

minimum recorded, 0.8 second-foot Oct. 7, bat may have been less during period of no 

gage-height record.

1945-50: Maximum discharge, that of May 30, 1950; minimum, that of Oct. 7, 1949, 

bat 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 poor. Flow regulated by East Park Reservoir. No diversions-above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

50 

51

Oct.

1.4 

1.2 

1.0 

.9 

1.0

1.0 

.8 

1.1 

1.4 

2.0

2.1 

2.5 

*2.5 

2.5 

2.4

2.2 

2.4 

b7.0 

blO 

b!5

blO 

b7.0 

b5.8 

b5.2 

b5.0

b4.7 

b4.4 

b4.5 

b4.2 

b4.1 

b4.0

Nov.

b4.0

I b5.9

b5.5

blO 

b7.0 

b5.6 

b5.0 

b4.5

b4.0 

3.6 

*3.0 

3.0 

2.8

2.7 

2.5 

2.4 

b2.4 

b2.4

2.4 

2.4 

2.4 

2.2 

2.1

Dec.

1.8 

1.4 

1.4 

1.2 

1.3

1"

1.0

Jan.

 1.9

Feb.

1.8 

(*)

Month

Octo 

Hove 

Dece

Ca

janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

 1.8 

1.9

Apr.

1.1 

1.1 

1.0 

1.0

1.1

1.2 

1.4 

1.8 

1.7 

1.6

1.6 

1.8 

2.1 

2.8 

2.6

2.8 

3.2 

4.5 

10 

20

30 

45 

54 

55 

52

50 

46 

43 

41 

59

Secondfoot-days

118.9 

113.5 

54.6

7,748.5

58.9 

50.4 

57.4 

519.4 

4,078 

3,855 

537 

478.6 

82.6

9,962.3

May

37 

35 

33 

32 

30

29 

28 

28 

27 

27

31 

37 

47 

55 

*65

86 

155 

164 

156 

171

210 

221 

205 

246 

200

148 

176 

247 

281 

451 

462

Maximum

15 

10

550

55 

462 

415 

27 

27 

7.8

462

June

415 

335 

237 

204 

208

238 

237 

172 

148 

150

160 

155 

142 

124 

108

96 

86 

77 

72 

65

62 

55 

49 

44 

40

36 

35 

51 

28 

26

July

26 

26 

24 

23 

22

21 

21 

22 

21 

19

19 

18

16 

16 

15

14 

14 

16 

15 

17

14 

13 

13 

13 

13

12 

12 

12 

12 

11 

27

Aug.

27 

26 

26 

26 

25

25 

24 

23 

21 

21

21

21 

20 

19 

19

18 

17 

17 

17 

15

13 

12 

8.2 

2.8 

2.4

2.4 

2.2 

2.0 

1.9 

1.9 

1.8

Sept.

1.6 

1.6 

1.6 

1.6 

1.4

1.4 

1.4 

1.6 

2.2 

4.5

3.2 

2.5 

2.4 

2.4 

2.4

2.2 

2.0 

1.8 

3.0 

7.8

5.8 

4.5 

4.5 

4.5 

3.8

2.8 

2.4 

2.0 

1.9 

1.8

Minimum j Mean J j££« ^

0.8 3.84 

2.1 3.78 

1.12

21.2

1.9 

1.8 

1.85 

1.0 17.3 

27 132 

26 128 

11 17.3 

1.8 15.4 

1.4 2.75

27.3

236 

225 

69

15,370

117 

100 

114 

1,030 

8,090 

7,600 

1,070 

949 

164

19,760

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Oct. 12, Dec. 6 to May 14, Sept. 15-19; discharge computed on basis 

f 1 estimate of flow, weather records, and records for nearby stations.
GREEN RIVER BASIN 241

Ashley Creek below Trout Creek, near Vernal, Utah

Location.--Water-stage recorder, lat. 40°44 I , long. 109°41', In NE^ sec. 16, T. 1 S., R.

20 E., 1,000 feet downstream from Trout Creek, 3 miles upstream from South Fork, and

21 miles northwest of Vernal.

Drainage area.--27 square miles.

Records available.--October 1943 to September 1950.

Extremes.--Maximum discharge during year, 558 second-feet May 30 (gage height, 3.58 feet); 

minimum discharge determined, 1.2 second-feet Feb. 24 (discharge measurement), "but may 

have been less during period of ice effect or no gage-height record.

1943-50: Maximum discharge, 630 second-feet May 19, 1948; minimum determined, that 

of Feb. 24, 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, 

which are poor. Flow slightly regulated at headwaters by Long Park Reservoir (capacity, 

500 acre-feet). No diversion above station.

Revisions (water year). W 1059: 1945.

Discharge, In second-feet, water year October 1949 to September 195O

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

Oct.

4.0 

3.5 

3.3 

3.2 

3.2

3.2 

3.5 

4.1 

4.9 

4.9

4.7 

5.4 

5.6 

*5.8 

5.2

5.0 

5.4 

8.5 

7.3 

7.0

6.5 

6.2 

5.9 

5.6

5.6

5.6 

5.6 

5.6 

5.6 

5.6 

5.6

Nov.

5.6 

5.6 

5.5 

5.4 

5.4

5.3 

5.2 

5.0 

5.0 

5.2

5.0 

4.9 

4.9 

4.7 

4.5

4.4 

4.2 

3.8 

3.6 

3.6

3.7 

3.7 

3.8 

3.6 

3.5

*3.5 

3.4 

3.4 

3.3 

3.3

Dec.

3.0

3.0

3.0 

2.5

Jan.

2.0

Feb.

1.5 

(*)

Month

Octo 

Nove 

Deoe

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

2.0

Apr.

2.0

2.5 

(*)

5.0 

6.4 

6.4 

6.0 

5.8

6.0 

6.5 

7.0 

6.2 

6.0

Secondfoot-days

161.1 

132.0 

85.0

11,329.9

62.0 

42.0 

6Z.O 

103.8 

3,015.2 

4,071 

1,056 

301.0 

183.4

9,274.5

May

> 6.0

5.9 

5.8 

5.6 

5.4 

5.3

5.2 

6.0 

10 

15 

25

45 

70 

90 

110 

140

165 

200 

210 

210 

190

150 

170 

210 

*250 

328 

358

Maximum

8.5 

5.6

317

358 

339 

48 

16 

8.8

358

June

339 

254 

184 

196 

232

277 

256 

160 

140 

164

189 

181 

157 

140 

123

112 

101 

91 

90 

96

95 

81 

71 

62 

60

51 

47 

43 

41 

38

July

38 

38 

42 

43 

39

36 

34 

35 

32 

31

33 

34 

28 

26

25

23 

24 

32 

48 

47

39 

38 

37 

36 

36

34 

34 

33 

31 

27 

23

Minimum

3.2 

3.3

-

5.2 

38 

23 

6.0

4.5

-

Aug.

16

14 

14 

13

12

11 

11 

10 

10 

10

12 

12 

11 

10 

1O

9.7 

9.4 

8.8 

8.2 

7.9

7.9 

7.6 

7.3 

7.0 

9.1

9.4 

7.3 

6.8 

6.4 

. 6.2 

6.0

Mean

5.20 

4.40 

2.74

31.0

2.0 

1.5 

2.0 

3.46 

97.3 

136 

34.1 

9.71 

6.11

25.4

Sept.

5.8 

5.6 

5.6 

5.4 

5.4

5.4 

5.4 

5.6 

7.0 

7.9

7.0 

6.4 

6.0 

6.0 

6.6

6.0 

5.6 

5.4 

6.2 

8.8

7.9 

7.0 

7.0 

6.8 

6.2

5.8 

5.2 

5.0 

4.9 

4.5

Runoff In 

acre-feet

320 

262 

169

22,470

123 

83 

123 

206 

5,980 

8,070 

2,090 

597 

364

18,390

Peak discharge (base, 300 sec.-ft.). May 30 (6 p.m.) 558 sec.-ft.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Oct. 13, 2O-23, 26-28, Oct. 31 to Nov. 16, Nov. 26 

to Dec. 2. No gage-height record Nov. 17-25, Dec. 3 to May 29; discharge computed on basis of 4 discharge measurements, weather records, and records for nearby streams.
242 GREEN RIVER BASIN

Ashley Creek near Vernal, Utah

location.--Water-stage recorder, lat. 40°34'50", long. 109°37'20", In SEi sec. 1, T. 3 S., 

R. VO E.. three-quarters of a mile upstream from head of Utah Power & Light Co.'s 

canal, 4j miles upstream from Dry Fork, and 10 miles northwest of Vernal.

Drainage area. 101 square miles.

Records available. June 1914 to September 1950. October 1911 to June 1914 at power plant 

l| miles downstream.

Average discharge.--34 years (1914-16, 1918-50), 105 second-feet.

Extremes.--Maximum discharge during year, 1,250 second-feet May 30 (gage height, 3.36 

feet); minimum, 20 second-feet Mar. 13.

1911-50: Maximum discharge, 2,050 second-feet May 29, 1921; minimum, 14 second-feet 

Apr. 2, 1949.

Remarks. Records good. Flow is increased by water released from Oaks Park Reservoir

(capacity, 6,250 acre-feet) on Brush Creek and diverted to Ashley Creek Basin for irrigation (see p. 238). City of Vernal pipe line (capacity, approximately 5 second-feet) 

diverts water from tributary spring 1,000 feet above station (diversion began Aug. 1, 

1941). At times part of this flow is returned to Ashley Creek, half a mile below station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

a55 

a53 

52 

52 

52

51 

52 

56 

56 

54

52 

54 

56 

56 

49

49 

49

57 

56 

45

54 

57 

57 

54 

51

49 

49 

48 

46 

45 

43

Nov.

42 

42 

43 

43 

45

43 

43 

43 

43 

43

41 

41 

42 

,45 

45

43 

42 

42 

41 

41

4O 

38 

38 

40 

40

38 

38 

37 

36 

34

Dec.

32 

30 

30 

28 

28

28 

28 

29 

29 

29

28 

28 

28 

29 

29

3O 

30 

29 

29 

30

30 

29 

29 

29 

29

29 

28 

29 

28 

28 

28

Jan.

29 

29 

28 

29 

29

28 

28 

28 

28 

28

28 

28 

28 

28 

28

28 

27 

27 

26 

26

26 

26 

26 

26 

25

25 

25 

25 

25 

24 

24

Feb.

24 

24 

23 

23 

23

23 

23 

23 

23 

23

23 

23 

23 

23 

23

23 

23 

23 

22 

22

22 

22 

22 

22 

22

22 

22 

22

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-5O .......................

Peak discharge (base, 6OO sec. -ft.). May

Mar.

22 

22 

23 

23 

23

23 

23 

23 

23 

23

23 

23 

22 

23 

23

22 

22 

23 

22 

23

22 

23 

23 

23 

23

23 

22 

22 

22 

22 

22

Apr.

23 

24 

28 

26 

26

28 

30 

37 

38 

36

33 

36 

40 

46 

48

48 

56 

64 

73 

94

127 

180 

240 

240 

217

208 

211 

224 

192 

171

Secondfoot-days

1,609 

1,232 

897

42,086

835 

636 

701 

2,844 

12,670 

11,329 

5,132 

3,714 

2,459

44,058

22 (7:30 p.m

May

166 

166 

166 

157 

140

140 

135 

130 

127 

122

125 

132 

149 

192 

249

312 

429 

589 

569 

624

704 

778 

784 

778 

676

531 

564 

676 

682 

802 

876

Maximum

57 

45 

32

720

29 

24 

23 

240 

876 

849 

207 

151 

97

876

June

849 

714 

465 

433 

490

638 

626 

402 

372 

411

456 

442 

389 

367 

359

342 

318 

288 

277 

303

326 

280 

269 

255 

238

220 

214 

201 

197 

188

Minimum

July

188 

194 

194 

207 

197

182 

175 

182 

169 

160

163 

166 

154 

148 

140

134 

131 

148 

169 

175

151 

143 

143 

148 

166

169

172 

169 

172 

163 

160

43 

34 

28

15

22' 24 

22 

23 

12? 

188 

131 

90 

60

22

.) 1,050 see. -ft.; May

Aug.

151 

146 

146 

143 

143

140 

137 

129 

126 

126

129 

131 

137 

134 

1 131

123 

120 

120 

118 

115

112 

105 

95 

95 

97

102 

97 

93 

93 

90 

90

Mean

51.9 

41.1 

28.9

115

26.9 

22.7 

22.6 

94.8 

409 

378 

166 

120 

82.0

121

Sept.

SB 

88 

93 

93 

95

95 

88 

93 

95 

97

. 97 

97 

93 

81 

81

79 

75 

70 

72 

79

77 

75 

75 

75 

75

73 

70 

66 

64 

60

Runoff In 

acre -feet

3,190 

2,440

1,780

83,480

1,660 

1,260 

1,390 

5,640 

25,130 

22,470 

10,180 

7,370 

4,880

87,390

30 (8 P.M.) 1,250

sec.-ft.; June 6 (9 p,m.)84Z see.-ft

a Ho gage-height recordj discharge computed on basis of records for nearby stations.
GREEN RIVER BASIN 843

Ashley Creek at Sign of the Maine, near Vernal, Utah

Location.--Water-stage recorder, lat. 40°31', long. 109°36', in NE£ sec. 31, T. 3 S., R. 

<il E., three-quarters of a mile downstream from Dry Fork and 4f miles northwest of 

Vernal.

Drainage area.--241 square miles.

Records available,--June 1939 to September 1950. March 1900 to December 1904 (fragmentaryj, puDiisned as Ashlev Creek near Vernal.

Average discharge.--11 years, 138 second-feet.

Extremes.--Maximum discharge during year, 2,220 second-feet May 30 (gage height, 5.40 

feet); minimum, 24 second-feet Mar. 12.

1939-50: Maximum discharge, 2,650 second-feet July 21, 1945, from rating curve 

extended above 1,500 second-feet; minimum recorded, 14 second-feet Feb. 26, 1949.

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

which are fair. Flow increased by water released from Oaks Park Reservoir (capacity, 

6,250 acre-feet) on Brush Creek and diverted to Ashley Creek Basin for irrigation 

(see p. 238). Diversions above station for irrigation and municipal water supply.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7 

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.

56 

52 

51 

50 

50

50 

51 

59 

60 

58

54 

55 

56 

56 

54

52 

55 

59 

92 

64

68 

71 

70 

65 

64

61 

59 

56 

56 

54 

52

Nov.

51 

50 

50 

50 

50

50 

49 

50 

49 

52

50 

48 

48 

49 

50

49 

47 

46 

44 

44

43 

42 

*43 

44 

44

43 

43 

43 

42 

41

Dec.

40 

38 

38 

37 

35

35 

36 

36 

37 

38

36 

35 

35 

b35 

b36

*36 

36 

36 

36 

36

36 

b36 

b36 

36 

b35

b35 

b34 

34 

35 

b34 

b33

Jan.

33 

34 

34 

b34 

b33

b32 

b31 

b31 

31 

b34

*b34 

35 

34 

34 

b32

b31 

32 

32 

31 

30

31 

31 

32 

33 

32

b31 

b31 

31 

b31 

31 

b31

Feb.

b31 

b31 

b31 

b31

31

31 

32 

32 

b33 

b33

33 

33 

b33 

33 

*32

3O 

30 

30 

30 

30

30 

29 

29 

30 

30

30 

31 

33

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Mftv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

32 

32 

33 

34 

36

36 

34 

32 

33 

34

33 

32 

30 

31 

32

31 

32 

33 

32 

32

30 

30 

30 

30 

33

33 

30 

30 

28 

29 

30

Apr.

30 

31 

34 

33 

31

34 

37 

44 

48 

44

41 

41 

43 

47 

52

51 

54 

61 

68 

76

83 

93 

103 

120 

140

150 

155 

165 

170 

180

Secondfoot -days

1,810 

1,404 

1,111

54,377

997 

872 

987 

2,259 

18,157 

19,010 

6,904 

3,933 

2,183

59,627

May

190 

190 

185 

183 

163

163 

157 

147 

139 

128

124 

132 

143 

178 

232

308 

429 

592 

716 

776

950 

1,080 

1,180 

1,210 

1,160

854 

908 

1,150 

1,300 

1,540 

1,550

Maximum

92 

52 

40

1,300

35 

33 

36 

180 

1,550 

1,530 

290 

163 

87

1,550

June

1,530 

1,290 

869 

735 

814

1,010 

1,060 

746 

646 

692

768 

780 

703 

651 

607

571 

527 

490 

452 

452

490 

426 

405 

381 

374

339 

321 

327 

284 

270

Minimum

July

260 

273 

276 

290 

276

265 

265 

290 

273 

242

260 

254 

225 

218 

203

190 

178 

203 

230 

232

203 

185 

181 

178 

190

183 

183 

183 

181 

167 

167

50 

41 

33

19

30 

29 

28 

30 

124 

270 

167 

87 

59

28

Aug.

163 

157 

157 

155 

150

148 

146 

134 

128 

128

128 

132 

140 

140 

138

130 

130 

128 

126 

126

126 

120 

112 

107 

107

107 

101 

98 

94 

90 

87

Mean

58.4 

46.8 

35.8

149

32.2 

31.1 

31.8 

75.3 

586 

634 

223 

127 

72.8

163

Sept.

85 

82 

87 

85 

83

77 

75 

74 

80 

S3

85 

80 

79_ 

74 

71

66 

63 

61 

63 

59

71 

68 

69 

72 

71

68 

65 

66 

62 

59

Runoff in 

acre-feet

3,590 

2,780 

2,200

107,900

1,980 

1,730 

1,960 

4,480 

36,010 

37,710 

13,690 

7,800 

4,330

118,300

Peak discharge (base, 8OO see. -ft. J. May 24 (11:30 p.m.) 1.5OO sec. -ft. ; May SO (9:30 p.m.) ?,2?o

sec.-ft.; June 7 (12:3(3 a.m.) 1,260 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Apr. 19 to May 2; discharge computed on basis of records for nearby stations.
244 GREEN RIVER BASIN

Ashley Creek near Jensen, Utah

Location.--Water-stage recorder, lat. 40°22', long. 109°25', in NE^ sec. 23, T. 53., R. 

22 K., immediately downstream from U. 3. Highway 40 bridge, 3 miles upstream from 

mouth, and 3 miles west of Jensen.

Drainage area.--366 square miles.

Records available.--October 1946 to September 1950.

Extremes.--Maximum discharge during year, 1,500 second-feet May 31 (gage height, 4.95 

reet); minimum, 2.6 second-feet Aug. 19.

1946-50: Maximum discharge, that of May 31, 1950; minimum recorded, 1.5 secondfeet Sept. 8, 9, 1948.

Remarks.--Records good except those for periods of ice effect, which are fair. Flow increased by water released from Oaks Park Reservoir (capacity, 6,250 acre-feet) on 

Brush Creek and diverted to Ashley Creek Basin for irrigation (see p. 238). Union 

,Canal is only diversion between gage and mouth of creek.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1

2 

3

4 

5

6 

7 

6 

9 

1C

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

16 

16 

16 

16 

16

16 

18 

68 

86 

44

41 

35 

36 

35 

34

34 

34 

37 

294 

138

118 

105 

94 

84 

77

73 

70

66 

66 

64 

64

Nov.

64 

62 

64 

64 

62

62 

60 

60 

60 

60

78 

65 

61 

62 

62

70

69 

66 

65 

65

64 

62 

64 

64 

65

65 

64 

61 

58 

58

Dec.

*58 

57 

57 

56 

55

56 

57 

57 

60 

65

62 

57 

47 

*40 

44

48 

54 

57

58

Jan.

56 

(*)

54 

(*)

Feb.

50

53

54

57 

60 

65

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

h.. .....................................

ter year 1949 50 .......................

Mar.

*72 

89 

100 

118 

130

142 

120 

105 

105 

122

120 

101 

*81 

87 

90

92 

102 

107

84 

86

76 

73 

69 

65 

70

76 

67 

61 

57 

57 

56

Apr.

57 

56 

56 

52 

52

53 

52 

53 

80 

76

71 

66 

64 

62 

83

78 

70 

74 

77 

78

102 

132 

192 

234 

215

203

194 

230 

155 

143

Secondfoot-days

1,911 

1,906 

1,741

33,251.8

1,704 

1,439 

2,780 

3,110 

11,886 

9,994 

2,152 

461.0 

636.8

39,720.8

May

142 

153 

149 

183 

159

147 

162 

138 

129 

125

104 

84 

78 

73 

73

102

174 

321 

427 

452

615 

847 

916 

910 

982

552 

418 

630 

686 

765 

1,190

Maximum

294 

78 

65

1,220

65 

142 

234 

1,190 

1,170 

129 

27 

38

1,190

.June

1,170 

1,100

666 

483 

410

585 

765 

519 

318 

301

402

625 

364 

276 

217

181 

157 

153 

151 

132

136 

138 

127 

125 

113

105

83 

67 

64 

61

July

56 

64 

71 

76 

74

71 

69 

92 

104 

102

125 

129 

109 

J01 

93

80 

74 

69 

62 

64

71 

62 

49 

43 

38

34 

34 

38 

37 

32 

29

Minimum

16 

58 

40

4.2

56 

52 

73 

61 

29 

6.2 

4.0

4.O

Aug.

27 

26 

23 

20

17

16 

17 

17 

18 

16

15 

13 

15 

15 

14

14

15 

16 

13

16

16 

13 

11 

12

13

13

12 

8.9 

6.2 

6.7 

6.2

Mean

61.6 

63.5 

56.2

91.1

55.0 

51.4 

89.7 

104 

383 

333 

69.4 

14.9 

21.2

109

Sept.

6.2 

7.2 

6.2 

4.0 

5.0

5.6 

7.8 

11 

8.4 

9.4

11 

11 

12 

20 

22

20 

19

23 

28 

37

37

36 

36 

38 

38

38 

37 

38 

37 

28

Runoff in 

acre-feet

3,790 

3,780 

3,450

65,960

3,380 

2,850 

5,510 

6,170 

23,580 

19,820 

4,270 

914 

1,260

78,780

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by lee Dec. 13 to Mar. 3.
GREEN RIVER BASIN 245

South Fork Ashley Creek near Vernal, Utah

Location. Water-stage recorder, lat. 40°44', long. 109°42', in ME;- sec. 17, T. IS., R. 

20 E., at lower end of Hicks Park, 3£ miles upstream from mouth and 21 miles northwest 

of Vernal.

Drainage area.--2Q square miles.

Records available.--October 1943 to September 1950.

Extremes.--Maximum discharge during year, 359 second-feet June 1 (gage height, 3.46 feet); 

minimum determined, 0.8 second-foot Feb. 23 (discharge measurement), but may have been 

less during period of ice effect or no'gage-height record.

1943-50: Maximum discharge, 460 second-feet June 18, 1949 (gage height, 3.84 feet); 

minimum determined, that of Feb. 23, 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, 

whicn are poor. Flow slightly regulated at headwaters by Twin and Goose Lake Reservoirs (capacity, 500 acre-feet). No diversion above station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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.

4.5 

4.1 

3.7 

3.4 

3.2

3.0 

3.2

4.8 

6.5 

6.3

5.8 

6.6 

5.9 

*5.9 

5.6

5.3 

5.0 

6.5 

6.2

6.0

5.8 

5.6 

5.4 

5.3 

5.3

5.3 

5.2 

5.0 

4.6 

4.8 

4.8

Nov.

4.8 

4.8 

4.8 

4.8 

4.8

4.7 

4.7 

4.6 

4.5

4.5

4.3 

4.3 

4.3 

4.3 

3.9

3.9 

3.7 

3.7 

3.7 

3.6

3.7 

3.9 

3.8 

3.7 

3.4

3.4 

3.4 

3.4 

3.6 

3.5

Dec.

2.5 

2.5

2.0

Jan.

1.5

Feb.

1.0 

(*)

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

1.5

Apr.

2.4 

2.2 

2.1 

2.3 

2.4

2.5 

2.7 

2.4 

2.4 

2.3

2.4 

2.5 

2.6 

2.7 

2.7

2.8 

2.9 

3.0 

*3.2 

4.0

4.5 

5.2 

6.2 

5.6 

5.4

5.6 

6.0 

6.2 

6.0 

5.4

Secondf oo t -days

158.6 

122.5 

69.5

8,854.2

46.5 

28.0 

46.5 

108.6 

2,356.2 

3,826 

1,296 

340.3 

230.5

8,629.2

May

5.4 

5.4 

5.5 

5.7 

5.6

5.5 

5.4 

5.4 

5.3 

5.2

5.2 

5.6 

6.4 

8.6 

13

23

40 

70 

93 

111

134 

168 

185 

187 

164

120 

130 

164 

*180 

236 

258

Maximum

6.6 

4.8

274

6.2 

258 

264 

73 

16 

12

264

June

264 

209 

134 

126 

179

220 

178 

118 

120 

151

175 

157 

146 

132 

128

118 

111 

96 

93

130

112 

105 

103 

96 

84

74 

70

67 

66 

64

July

67 

67 

68 

73 

66

59 

59 

59 

53 

48

52 

46 

45 

40 

36

32 

31 

44

37

40

31 

27 

26 

29 

27

22 

24 

25 

25 

21 

17

Minimum

3.0 

3.4

-

2.1 

5.2 

64 

17 

7.1 

4.6

-

Aug.

16 

14 

14 

13 

13

13 

13 

12 

13 

12

16 

15 

13 

12 

12

11 

11 

10 

9.2 

8.8

8.8 

8.0 

8.4 

8.4 

9.2

9.2 

8.0 

7.4 

7.4 

7.4 

7.1

Mean

5.12 

4.08 

2.24

24.3

1.5 

1.0 

1.5 

3.62 

76. 0 

128 

41.8 

11.0 

7.7

23.6

Sept.

6.8 

6.5 

6.5 

6.8 

6.5

7.1 

7.4 

- 7.1 

10 

12

12 

9.2 

7.7 

7.7 

7.7

6.8 

6.5 

6.5 

8.0 

12

9.6 

9.6 

8.8 

8.4 

7.1

6.2 

5.6 

5.0 

4.8

4.6

Runoff in 

acre-feet

315 

243 

138

17,560

92 

56 

92 

215 

4,670 

7,590 

2,570 

675 

457

17,110

Peak discharge (base, 200 sec.-ft.). June 1 (7 p.m.) 359 sec.-ft.; June 20 (7 p.m.) 227 sec.-ft.

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Oct. 1O-12, 19-28, Oct. 30 to Nov. 13, Nov. 22-24, 

30, Dec. 1, Apr. 19 to May 1, May 15, 16. No gage-height record Dec. 2 to Apr. 18, May 2-14, 17, 18; 

discharge computed on basis of 2 discharge measurements, weather records, and records for nearby 

streams.
246 GREEN RIVER BASIN

Dry Fork above sinks, near Dry. Fork, Utah

Location.--Water-stage recorder, lat. 40°38', long. 109°49', In sec. 20, T. 2 S., R. 19 

E"! funsurveyed), 9 miles northwest of Dry Fork and 14 miles upstream from mouth.

Drainage area. 48 square miles.

Records available. March 1939 to September 1950.

Average discharge. 11 years, 41.0 second-feet.

Extremes.--Maximum discharge during year, 753 second-feet June 1 (gage height, 4.67 feet), 

minimum not determined, occurred during period .of no gage-height record.

1939-50: Maximum discharge, 880 second-feet June 18, 1949 (gage height, 4.85 feet), 

by slope-area method; 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.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

13 

12 

11 

11

10

10

11

14 

14

14

14 

14 

16 

16

16

16 

16 

20 

30 

25

23

22 

21 

20 

20

20 

*19 

19 

18 

18 

20

Nov.

19 

18 

18 

18 

18

18 

18 

17 

17

 *bl7

17 

17

17 

16 

16 

bl4 

b!2

Dec.

I blO

I '" 

I "

b7 

7

Jan.

5

Feb.

(*) 

4

Month

Octo 

Hove 

Dece

Ca

Janu 

Febri 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

1.............................. .........

ter year 1949-50 ...............

Mar.

4

Apr.

} 

} '

7 

8 

9

10

*11 

bl2 

D13 

b!4 

b!5

16 

19 

20 

21 

24

31 

37 

44 

44 

43

*40 

40 

41 

40 

38

Secondfoot-days

523 

508 

242

15,169.1

155 

112 

124 

630 

4,641 

6,444 

2,127 

762 

509

16,777

May

35 

36 

36 

32 

32

31 

30 

28 

26 

25

24 

23 

24 

27 

35

49 

78 

120 

164 

177

212 

270 

300 

347 

340

273 

273 

307 

310 

431 

546

Maximum

30

19

469

44 

546 

572 

102 

38 

22

572

June

572 

446 

266 

232 

279

378 

354 

241 

204 

223

253 

253

232 

223

210

199 

186 

170 

155 

151

151 

151 

145 

142 

136

110 

102 

96 

93

91

July

93

98 

99 

102

91

81 

89 

101 

85 

73

82 

72 

70 

66 

59

54

54 

77 

67 

73

59 

52 

50 

50 

50

45 

48 

49 

54 

44 

40

Minimum

10 

12

-

23

91 

40 

17 

13

-

Aug.

38 

37 

36 

34 

32

30

29 

27 

26

26

27 

28 

27 

25

26

24 

23

22 

21 

20

19 

20

19 

19 

19

20 

19 

18 

17 

17 

17

Mean

16.9 

16.9 

7.8

41.6

5.0 

4.0 

4.0

21.0 

150 

215 

68.6 

24.6 

17.0

46.0

Sept.

15 

14 

14 

13 

13

14 

15 

15 

18 

19

20

19 

17 

17 

17

16 

17 

16 

19 

22

21 

21 

20 

20 

19

17 

16

16 

15 

14

Runoff In 

acre-feet

1,040 

1,010 

480

30 , 100

307 

222 

246 

1,250 

9,210 

12,780 

4,220 

1,510 

1,010

33,280

Peak discharge (base, 300 sec.-ft.). June 1 (8:30 p.m.) 753 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 18-27, Dec. 12 to Apr. 11 (stage-discharge relation affected by 

Ice during most of period); discharge computed on basis of 2 discharge measurements, weather records, 

and records for nearby streams.
GREEN RIVER BASIN 247 

North Pork of Dry Fork near Dry Fork, Utah

Location.--Water-stage recorder, lat. 40°38', long. 109°48', in sec. 17, T. 2 S., R. 19 

E., a miles upstream from mouth and 9| miles northwest of town of Dry Fork.

Drainage area. 12 square miles.

Records available.--April 1946 to September 1950. ^

Extremes.--Maximum discharge during year, 101 second-feet May 30 (gage height, 3.34 feet); 

minimum not determined, occurred during period of no gage-height record.

1946-50: Maximum discharge, 136 second-feet May 7, 1947 (gage height, 3.60 feet); 

minimum recorded, C.4 second-foot Oct. 19, 1947.

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

which are fair. No diversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6

7 

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.

2.2 

2.2

2.0 

2.0 

1.9

1.8 

2.0 

2.2 

2.2

2.0

2.0 

2.3 

2.3 

2.4 

2.4

2.3 

2.3 

2.6 

3.3 

2.0

2.2 

2.4

2.5 

2.4 

2.4

E.3 

2.5 

2.3 

2.4 

2.2 

2.3

Nov.

2.3 

2.3 

2.4 

2.4

2.3

2.2 

2.0 

2.3 

2.3 

2.3

2.0 

2.2 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.2 

2.2 

2.2 

2.2 

2.2

2.2 

2.2 

2.2

2.0 

2.0

Dec.

1.9 

1.9 

1.9 

1.8 

1.8

*1.8 

1.9 

1.8

I bl.8

1.8 

1.8 

1.8

1.8 

1.8 

1.8 

1.8 

1.8

1.8 

1.7 

1.7 

1.7 

1.7

1.6 

1.6 

1.6

1.6 

1.6 

1.5

Jan.

1.6 

1.6

 bl.6

1.6 

1.6 

1.6 

1.5 

1.5

1.5 

1.5 

bl.5 

1.5 

1.5

1.5 

1.5 

1.4

1.4

1.2

Feb.

1 (*) 

> bl.2

1.2 

1.1

1.1 

1.1 

bl.l 

1.1 

1.0

1.0 

1.0 

bl.O 

1.0 

1.0

'.9 

.9 

.9 

.9 

.9

.9 

b.9 

.9 

.9 

.9

.9 

.9 

.9

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

0.9 

.9 

.9 

.9 

.9

.9

.9 

b.9 

b.9 

1.0

1.0

Apr.

2.0 

2.5

3.0

\ 3.5

> 4.0

5.0 

7.0 

9.0

12 

14 

18 

18 

16

*15 

15 

15 

14 

13

Secondfoot-days

70.1 

67.0 

54.5

2,543.7

44.5 

28.0 

29.7 

220.5 

1,003.9 

1,020 

349.6 

156.6 

81.4

3,125.8

May

12 

12 

12

11 

11

9.8 

9.5 

8.8 

8.8 

8.2

8.5 

8.5 

S.8 

10 

13

18 

26 

37 

41 

44

52 

57 

60 

64 

60

55 

62 

65 

61 

74 

76

Maximum

3.3 

2.4

1.9

43

18 

76 

75 

16 

7.2 

3.2

76

June

75 

62 

53 

49 

52

55 

51 

42 

38 

40

40 

38 

34 

32 

30

29 

28 

27 

26 

24

23

21 

21 

20

19

18 

18 

17 

17

Minimum

July

16 

16 

15 

15 

14

14 

14 

14 

13 

12

12 

11 

11 

11 

10

9.8 

11 

12 

11

11

10 

9.2 

9.2 

9.5 

8.8

8.5 

8.8 

8.5 

8.5 

8.2 

7.6

1.8 

2.0

1.5

-

.9

8.2 

17 

7.6 

3.2

2.0

-

Aug.

7.2 7.2- 

6.9 

6.9 

6.6

6.4

6.1 

6.1 

5.9 

6.1

6.1 

5.9 

5.7 

5.7 

5.7

5.4 

5.2 

5.0 

4.8 

4.0

3.7 

3.5 

3.5 

3.5 

3.5

3.5 

3.5 

3.3 

3.3 

3.2 

3.2

Mean

2.26 

2.23 

1.76

6.97

1.44

i.oo

.96 

7.35 

32.4 

34 

11.3 

5.05 

2.71

8.56

Sept.

3.0 

3.0 

2.9 

3.0 

2.9

2.9 

3.0 

3.0 

3.2 

3.2

2.9 

2.9 

2.9 

2.7 

2.6

2.6 

2.5 

2.5 

2.7 

3.2

2.7 

2.7 

2.7 

2.6 

2.4

2.3 

2.2 

2.2

2.0 

2.0

"fee?

139

133 

108

5,040

88 

56 

59 

437 

1,990 

2,020 

693 

311 

161

6,200

Peak discharge (base, 70 sec. -ft. ) . May 30 (5:30 p.m.) 101 sec. -ft.

Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Jan. 19-31, Mar. 15 to Apr. 21 (stage-discharge relation affected by 

ice during most of period); discharge computed on basis of weather records and records for stations 

on nearby streams.

207364 O - 52 - 17
248 GREEN RIVER BASIN

East Pork of Dry Pork near Dry Fork, Utah

Location.--Water-stage recorder, lat. 40°39', long. 109°46', in sec. 14, T. 23., R. 19 E. 

(unsurveyed), 3| miles upstream from mouth and 8 miles northwest of town of Dry Fork.

Drainage area.--12 square miles.

Records available.--April 1946 to September 1950.

Extremes.--Maximum discharge during year, 185 second-feet June 1 (gage height, 3.86 feet); 

minimum not determined, occurred during period of no gage-height record.

1946-50: Maximum discharge, 240 second-feet June 18, 1949 (gage height, 4.27 feet), 

by slope-area method; minimum not determined.

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

which are fair. No diversion above Station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

2.1 

2.0 

1.9 

1.9

1.9

1.9 

2.0 

2.3 

2.2 

2.3

2.5 

2.5 

2.5 

2.6 

2.6

2.5 

2.5 

3.0 

1.6 

1.5

1.8

2.1

} "

2.5 

2.5 

2.5 

2.5 

2.5 

2.6

Nov.

2.5 

*2.3 

2.5 

2.6 

2.6

2.6 

2.6 

2.5 

2.3 

2.5

2.6 

2.0 

2.1 

bZ.l 

bZ.l

2.2 

*2.1

V bZ.l

I bZ.O

2.0 

b2.0

bZ.O 

2.O 

2.0 

bl.5 

bl.O

Dec.

L bl.O

1 '"

i. b.8

b.7

.7

Jan.

0.6

Feb.

. 0.5

Month

Goto 

Move 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ua

lendar year 1949

ter year 1949-50 ...............

Mar.

O.5

Apr.

}.,

} -

1.0

} "= 

,.

1.8 

2.3 

3.0

5.0 

7.0 

9.0 

8.4 

7.8

7.3 

*6.8 

6.4 

b5.8 

b5.4

Second - 

foot-days

71.1 

65.0 

23.7

3,540.2

18.6 

14.0 

15.5 

93.6 

1,179.2 

2,180 

588.3 

93.4 

35.4

4,377.8

May

5.2 

5.2 

5.2 

5.C

15. C

b4." 

b4.4 

b4.1 

3.9 

*b3."

3.E 

3.7 

3.7 

4.4 

5.5

6.8 

14 

*30 

37 

48

66 

79 

83 

92 

82

64 

73 

89 

92

115 

141

Maximum

3.0 

2.6

116

9.0

141 

140 

31 

6.4 

1.6

141

June

140

112 

82 

75 

98

121 

105 

72 

71 

84

96 

92 

88 

87 

36

79 

73 

66 

62 

60

58 

58 

49 

46 

43

40 

37 

35 

34 

31

July

30 

31 

30 

30 

30

27 

28 

28 

26 

24

26 

24 

22

20 

18

17 

18 

20 

17 

18

15 

13 

13 

14 

12

5.8 

5.2 

5.5 

7.6 

6.3 

6.4

Minimum

1.5

1.0

-

3.5 

31 

5.2 

1.4

.8

-

Aug.

6.4 

6.4 

6.1 

5.5

5.2

4.9 

4.4 

3.9 

3.7 

3.5

3.7 

3.5 

3.0

.O 

.7

.6 

.3 

.0 

.9

.7

.6 

.5 

.5 

.4 

.4

.5 

.8 

.8 

.6 

.5 

.4

Mean

2.29 

2.17 

.76

9.70

.60 

.50 

.50 

3.12 

38.0 

72.7 

19.0 

3.01 

1.18

12.0

Sept.

.4 

.4 

.3 

.2 

.2

.2 

.2 

.2 

.6 

.5

.4 

.3 

.2 

.2 

.1

.1

.O 

.9 

.2 

.4

.2 

.2 

.4 

.3

.1

.9 

.9 

.8 

.8

.8

Runoff In 

acre-feet

141 

129 

47

7,030

37 

28 

31 

186 

2,340 

4,320 

1,170 

185 

70

8,680

Peak discharge (base. 10O sec.-ft.). June 1 (6:30 p.m.) 185 sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Mote.--Mo gage-height record Oct. 20-27, Dec. 12 to Apr. 26 (stage-discharge relation affected by 

Ice during most of period), Sept. 27-30; discharge computed on basis of 1 discharge measurement, 

weather records, and records for nearby stations.
GREEN RWER BASIN 

East Fork of Dry Fork at mouth, near Dry Fork, Utah

249

Location.--Water-stage recorder, lat. 40°38', long. 109°46', In NW£ sec. 23. T. 23., R. 

nr~E7 Salt Lake Meridian, about if miles upstream from mouth and about 8-J miles northwest of Dry Fork.

Records available.--July 1949 to September 1950.

Extremes. Maximum discharge during period, 162 second-feet June 1 (gage height, 3.31

FeeTT, from rating curve extended above 80 second-feet by logarithmic plotting; no flow 

for many days.

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

which are poor.

Discharge, in second-feet, 1949-5O 

1349

Day

1

2

3

4

5

6

7

8

July

-

-

-

-

-

-

-

-

Aug.

4.4

4.0

3.8

3.4

3.8

3.8

3.2

5.7

Sept.

1.8

1.6

1.5

1.4

1.4

1.3

1.2

1.2

Day

9

10

11

12

13

14

15

16

July

_

_

-

-

_

-

-

-

Augj3.8

3.0

2.5

2.3

2.2

2.0

1.9

1.8

Sept.

1.0

1.2

1.8

1.5

1.4

1.4

1.3

1.2

Day

17

18

19

20

21

22

23

24

July

_

_

9.6

9.6

9.3

9.0

8.8

8.2

Aug.

1.8

1.6

1.61

1.4

1.3

1.3

1.4

1.8

Sept.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Day

25

26

27

28

29

30

31

July

7.9

7.4

6.9

6.2

5.5

5.0

4.6

Aug.

1.3

.8

.6

.4

.6

1.6

1.8

Sept.

1.0

1.0

1.0

1.2

1.9

1.6

_

Peak discharge (base, 100 sec.-ft.). No peak above base.

Day

1

2

3

4

5

6

7

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.

1.5

1.4

1.3

1.2

1.2

1.2

1.4

1.6

1.8

1.4

.6

.9

1.6

1.6

1.4

1.4

1.4

1.9

0

0

0

.2

.1

.3

.4

1.3

1.0

.3

.3

.2

.1

Nov.

0.1

.2

.2

.7

.8

.3

.3

.8

.8

.1

0

o

0

.2

.3

b.4

-

Dec.

. 0.2

Jan.

. 0.2

Feb.

(*)

0.2

-

_

-

Mar.

0.2

Apr.

0.3

.4

*.4

.7

.6

.6

-

May

1.3

1.0

1.0

1.2

.4

.4

.7

.4

1.3

.5

.8

.8

.8

.8

1.0

1.5

9.2

24

30

36

52

68

75

81

70

51

59

79

82

105

114

June

119

98

71

63

80

101

84

61

61

74

87

91

86

82

77

74

69

62

59

56

54

50

47

45

44

42

38

36

34

32

-

July

32

31

30

30

30

27

27

27

23

21

23

20

18

17

15

15

15

17

14

17

14

12

12

12

11

9.6

9.3

8.8

7.7

6.4

5.2

Aug.

4.6

4.2

4.0

3.6

3.4

3.4

2.8

2.6

2.3

2.2

2.5

2.3

2.0

1.9

1.8

1.6

1.4

1.0

1.0

.8

.6

.5

.8

.8

.7

1.3

1.8

1.8

1.4

1.3

1.3

Sept.

1.2

1.2

1.0

.8

.8

.8

.6

.8

1.5

1.3

1.2

1.0

1.0

.8

.7

.6

.4

.3

.5

1.0

.7

.8

1.0

.7

.4

.2

.1

.1

.1

.1

-

Peak discharge (base, 100 sec. -ft.).-- June 1 (8 p.m.) IB* sec.-iui

Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 1 to Apr. 26 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of 1 observation of no flow, 1 discharge measurement, 

weather records, and records for stations on nearby streams.

Monthly discharge, in second-feet, 1949-5O

Month ~

September. ...............................

The period. ...............................

Water year 1949-50 .......................

Secondfoot-days

37.9

.

949 1

3,642.2

Maximum

1.9

119

Minimum

1.0

32

0

Mean

1.36,.

39

9.98

Runoff in 

acre-feet

75

410

1,100

7,V!10
250 GREEN RIVER BASIN

Duchesne River at Provo River Trail, near Hanna, Utah

Location.--Water-stage recorder, lat. 40°37', long. 110°54 I , in SE^ sec. 27, T. 3 N., R. 

9 W. Uinta meridian, 400 feet downstream from Provo River Trail, 7 miles upstream from 

Hades Creek, and 12 miles northwest of Hanna. Datum of gage is 8,135.97 feet above mean 

sea level (levels by Bureau of Reclamation).

Drainage area.--39 square miles.

Records available.--July 1929 to September 1933, October 1935 to September 1943, October 

1944 to September 1950.

Average discharge.--18 years (1929-33, 1935-43, 1944-50), 55.1 second-feet.

Extremes.--Maximum discharge during year, 880 second-feet June 16 (gage height, 3.70 feet); 

minimum recorded, 3.2 second-feet Dec. 1, 4.

1929-33, 1935-43, 1944-50: Maximum discharge recorded, 892 second-feet June 12, 1949 

(gage height, 3.80 feet); minimum recorded, 1 second-foot 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.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2

3

4 

5

6 

7 

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.

9.4

8.8 

8.5 

8.5 

8.8

10

11 

11 

11 

12

11 

12 

13 

12 

11

10

10 

16 

16 

16

14 

14 

14 

13 

13

12 

12 

12 

12 

11 

11

Nov.

11 

11 

11 

10 

10

10 

9.7 

10 

9.7 

10

12 

13 

12 

12 

11

10 

10 

11 

10 

9.7

8.8 

8.5 

9.1 

10 

9.7

9.7 

9.4 

9.7 

9.1 

8.5

Dec.

.9 

.9 

.6 

.0 

* .3

.6 

.3 

.0 

.0 

.6

b7.0 

b7.0

a7.0

Jan.

(*)

. a6.5

Feb.

, a6.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Aprl 

Hay

June 

July 

Augu 

Sept

Wa

ber.... .................................

lendar year 1949

ter year 1949-5O ...............

Mar.

. a7.0

Apr.

*7.6 

7.9 

7.6 

8.5 

9.7

7.9 

9.7 

11 

9.7 

9.7

11 

12 

16 

18 

16

16 

23 

28 

29 

38

57 

74 

83 

75 

65

63 

59 

53 

46 

42

Secondfoot-days

364.0 

305.6 

221.2

24,479.9

201.5 

168.0 

217.0 

913.3 

5,284 

15,103 

3,084 

514.3 

317.0

26,692.9

May

39 

38 

36 

34 

32

30 

29 

28 

26 

26

28

33 

45 

63 

81

105 

126 

131 

131 

149

189 

248 

295 

347 

358

343 

384 

415 

395 

498 

602

Maximum

16 

13

765

83 

602 

695 

260 

32 

18

695

June

625 

570 

439

435 

552

660 

594 

384 

295 

347

494 

575 

602 

675 

680

695 

675 

615 

584 

580

575 

544 

498 

456 

376

336 

336 

322 

305 

279

July

2GO 

242 

216 

197 

172

148 

146 

168 

141 

126

124 

104 

93 

84 

76

C9 

66 

65 

59 

55

51 

47 

45 

43 

41

38 

41 

49 

46 

38 

34

Minimum

8.5 

8.5

-

7.6 

26 

279 

34 

7.6 

7.0

-

Aug.

32

30 

28 

28 

26

24 

23 

21 

20 

19

19 

18 

18 

17

16

16 

15 

14 

13 

12

12 

11 

11 

10 

9.7

9.7 

9.4 

8.8 

8.2 

7.9 

7.6

Mean

11.7 

10.2 

7.14

67.1

6.5 

6.0 

7.0 

30.4 

170 

503 

99.5 

16.6 

10.6

73.1

Sept.

7.3 

7.0 

7.0 

7.0 

7.3

7.3 

7.6 

11 

9.7 

9.4

13

13 

12 

10 

9.7

9.4 

10 

8.8 

8.5 

13

18 

14 

16 

15 

13

12 

11 

10 

10 

10

Runoff In 

acre -feet

722

606 

439

48,560

400 

333 

430 

1,810 

10,480 

29,960 

6,120 

1,020 

629

52,950

Peak discharge (base, 500 sec.-ft.). June 16 (8 p.m.) 880 sec.-ft. 

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 1 discharge measurement, weather records, 

and records for lower Duohesne River stations, 

b SI age-discharge relation affected by Ice.
GREEN RIVER BASIN 251

Duchesne River near Hanna, Utah

Location --Water-stage recorder, lat. 40°32'00", long. 110°52 I 15", In NE£ sec. 35, T. 2 N., 

K. 9 W. Ulnta meridian,-250 feet downstream from Hades Creek and 7 miles northwest of 

Hanna.

Drainage area.--78 square miles.

Records available.--August 1921 to September 1923, July 1929 to September 1930 (published 

as Wortn fork Duchesne River near Hanna), March 1946 to September 1950.

Extremes.--Maximum discharge during year, 1,190 se<?ond-feet June 6 (gage height, 5.08

I'eet); minimum recorded, 13 second-feet Dec. 4, but may have been less during periods of 

ice effect or no gage-height record.

1921-23, 1930, 1946-50: Maximum discharge observed, 1,490 second-feet June 8, 9, 

1922 (gage height, 4.65 feet, datum then in use); minimum recorded, 12 second-feet Nov. 

19, 1948.

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

which are fair. One small diversion above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4

fl

6 

7 

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 

19 

18 

18 

18

b19 

20 

20 

22 

22

22 

22 

24 

23 

22

21 

22 

37 

33 

29

26 

25 

26 

26 

25

24 

23 

23 

23

22

21

Nov.

22 

21 

21 

20 

20

21 

20 

22 

22 

22

23 

25 

26 

25

24

23 

23 

23 

22

21

21 

20 

20 

22

21

21 

20 

21 

*21 

19

Dec.

18 

19 

19 

20

19

19 

20 

19 

18 

19

19 

b!8

Jan.

a!6

Feb.

a!5 

(*)

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

ber. ....................................

lendar year 1949 

ary

ter year 1949-50 ...............

Mar.

ale

Apr.

a24 

a28 

a27 

a22 

a23

a3O 

a43 

a54 

a52 

a 46

a46 

a 48 

*a55 

68 

59

65 

90 

102 

102 

123

167 

210 

228 

213 

184

172 

167 

153 

136 

121

Secondfoot-days

714 

652 

569

43,711

496 

420 

558 

2,858 

9,844 

22,992 

5,330 

1,271 

933

4R.K37

May

118 

114 

112 

104 

98

94 

90 

84 

81 

77

81 

92

116 

153 

191

233

280 

292 

283 

298

356 

439

522 

580 

618

588 

639 

705 

661 

776 

969

Maximum

37 

26

1,050

228 

969 

1,060 

395 

65 

44

i . OKn

June

1,000 

979 

728 

701 

855

1,060 

1,000 

678 

551 

575

747 

891 

901 

974 

979

979 

969

901 

855 

815

795 

766 

705 

652 

559

506 

498 

478 

463 

432

July

395 

366 

329 

301

277

246 

244 

271 

244 

220

213 

188 

172 

158 

147

136 

133 

129 

121 

112

102 

96 

90 

84 

81

75 

79 

88 

90 

75 

68

Minimum

18 

19

-

22 

77 

432 

68

27 

25

Aug.

65 

60 

59 

57 

56

51 

50 

48 

46 

46

44 

43 

43 

44 

40

39 

38 

37 

37 

36

34 

32 

32 

31 

31

31 

30 

29 

28 

27 

27

Mean

23.0 

21.7 

18.4

120

16.0 

15.0 

18.0 

95.3

318 

766 

172 

41.0 

31.1

1?R

Sept.

26 

26 

26 

25

26

25 

2S 

34 

32 

29

34 

38 

32 

29 

29

31 

31 

29 

29 

38

44 

38 

39 

39 

36

32 

29 

28

27 

26

Runoff in 

acre-feet

1,420 

1,290 

1,130

86,700

984 

833 

1,110 

5,670 

19,530 

45,600 

10,570 

.- 2,520 

1,850

92. Finn

Peak discharge (base. 900 sec.-ft.). June 1 (11 p.m.) 1,160 sec.-ft.; June 6 (11:30 p.m.) 1,190 

sec.-ft.; June 16 (11 p.m.j 1,160 sec.-ft.

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of 2 discharge measurements, weather records, 

and records for other Duchesne River stations.

b Stage-discharge relation affected by ice.
252 GREEN RIVER BASIN

Duchesne River near Tabiona, Utah

Location.--Water-stage recorder, lat. 40°18'00", long. 110°36'10" in SW^SEs- sec. 18, T. 

£ S., R. 6 W. Uinta meridian, at bridge on State Highway 35, Bj miles upstream from 

Rock Creek and 8 miles southeast of Tabiona.

Drainage area.--352 square miles.

Records available.--January 1919 to September 1950.

Average discharge.--31 years, 211 second-feet.

Extremes.--Maximum discharge during year, 1,840 second-feet June 2 (gage height, 7.49 

reet); minimum, 73 second-feet Sept. 2.

1919-50: Maximum discharge observed, 2,500 second-feet June 13, 1901, from rating 

curve extended above 1,100 second-feet; minimum recorded, 27 second-feet Oct. 17, 1934.

Remarks.--Records excellent except those for periods of ice effect, which are fair. 

Several diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7

e

9 

10

11

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

84 

84 

84 

87 

87

88 

93 

102 

116 

124

124 

126 

124 

124 

126

130 

132 

152 

188 

169

159 

152 

154 

152 

150

150 

150 

148 

148 

145 

141

Nov.

145 

145 

143 

143 

136

136 

136 

141 

143 

157

148 

136 

138 

145 

145

141 

138 

136 

136 

134

130 

126 

130 

136 

134

130 

130 

124 

*124 

122

Dec.

118 

114 

118 

111 

114

120 

124 

126 

124 

124

114 

110 

108 

107 

107

108 

110 

113 

116 

118

*122 

118 

110 

110 

112

110 

110 

108 

108 

107 

107

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

Jan.

100 

(*)

Feb.

100

101 

101 

101

108 

104 

104 

109 

99

99

101 

98 

101 

109

102 

98 

104 

104 

108

109 

118 

*118

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 900 see. -ft.). June

Mar.

106 

111 

120 

128 

130

124 

106 

108 

114 

111

109 

101 

98 

111 

108

102 

116 

113 

108 

111

102 

108 

104 

108 

111

102 

102 

101 

101 

102 

116

Apr.

134 

152 

148 

118 

120

128 

143 

164 

159 

138

138 

150 

175 

207 

185

193 

231 

265 

256 

275

343 

427 

480 

484 

423

400 

396 

376 

343 

315

Secondfoot-days

3,993 

4,108 

3,526

93,899

3,100 

2,896 

3,392 

7,466 

19,132 

35,585 

11,205 

3,287 

3,905

101,595

2 (10 a.m.)

May

305 

301

292 

278 

272

265 

265 

256 

249 

243

243 

249 

278 

336 

411

480 

580 

612 

608 

603

670 

812 

954 

1,000 

1,130

1,080 

1,120 

1,240 

1,190 

1,260 

1,550

Maximum

188 

157 

126

1,430

118 

130 

484 

1,550 

1,680 

654 

162 

183

1,680

June

1,620 

1,680 

1,370 

1,250 

1,340

1,590 

1,660 

1,200 

948 

879

1,020 

1,250 

1,270 

1,350 

1,380

1,400 

1,420 

1,350 

1,280 

1,230

1,190 

1,170 

1,080 

1,010 

910

820 

786 

737 

710 

685

July

65 4 

620 

577 

549 

518

500 

474 

522 

504 

454

433 

398 

372 

350 

336

302 

298 

334 

295 

266

251 

248 

248 

240 

234

228 

222 

214 

203 

188 

173

Minimum

84 

122 

107

-

98 

98 

118 

243 

685 

173 

77 

75

75

Aug.

162 

155 

148 

146 

142

131 

123 

118 

114 

100

103 

100 

100 

102 

102

102 

100 

98 

96 

96

98 

95 

90 

93 

90

82 

81 

81 

82 

80 

77

Mean

129 

137 '114

257

100 

103 

109 

249 

617 

1,186 

361 

106 

130

278

Sept.

75 

75 

77 

77 

77

82 

86 

95 

102 

118

127 

140 

131 

133 

135

140 

146 

146 

148 

164

164 

159 

166 

183 

173

164 

157 

155 

155 

155

Runoff in 

acre-feet

7,920 

8,150 

6,990

186,200

6,150 

5,740 

6,730 

14,810 

37,950 

70,580 

22,220 

6,520 

7,750

201,500

1,840 sec. -ft.; June 17 (8:30 a.m.) 1,560

see.-ft.

* Winter discharge measurement made on this day.

Mote. Stage-discharge relation affected by ice Dec. 11-19, Dee. 22 to Feb. 7, Feb. 9, 10.
GREEN RIVER BASIN 253

Duchesne River at Duchesne, Utah

Location.--Water-stage recorder, lat. 40°09'55", long. 110°23'50", in SW^NE^ sec. 1, T. 4 

S., R. 5 W. Uinta meridian, at Duchesne, half a mile upstream from Strawberry River.

Drainage area.--660 square miles.

Records available.--December 1917 to September 1950.

Average discharge.--33 years, 373 second-feet.

Extremes.--Maximum discharge during year, 3,170 second-feet June 2 (gage height, 6.13 feet); 

minimum, 45 second-feet Sept. 6.

1917-50: Maximum discharge observed, 4,420 second-feet June 10, 1922 (gage height, 

8.65 feet, site and datum then in use); minimum observed, 15 second-feet July 11, 1931.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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 

&

26 

27 

28 

29 

30 

31

Oct.

123 . 

122

118 

118 

120

122 

124 

133 

160 

166

181 

190 

190 

190 

178

178 

178 

190 

330 

280

249

227 

227 

224 

214

212 

204 

202 

206 

206 

199

Nov.

202 

197 

194 

199 

192

190 

192 

194 

199 

235

249 

222 

222 

232

235

232 

230 

227 

222

219

216 

209 

214 

216 

222

212 

206 

202 

199 

194

Dec.

188 

176 

181 

174 

164

174 

190 

190 

188 

202

197 

183 

158 

150 

160

175 

190 

205 

*219 

219

209 

194 

194- 

b!80 

216

 b210

Jan.

b210

210

(*) 

b210

205

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

Feb.

200

195 

190 

185 

190

180 

175 

180 

175 

180

*190 

180 

175 

185 

180

190 

190 

190

lendar year 19 4S

ter year_ 1949-50 .......................

Mar.

199 

192 

202 

219 

230

219 

183 

183 

194 

192

185 

168 

162 

183 

181

172 

181 

197 

174 

178

170 

178 

172 

185 

190

176 

172 

168 

160 

168 

172

Apr.

212

227 

252 

181 

166

164 

181 

214 

227 

194

188 

202 

224 

261 

249

238 

280 

348 

334 

345

425 

551 

682 

720 

646

600 

567 

551 

490 

430

Secondfoot-days

5,761 

6,374 

5,936

160,434

6,480 

5,330 

5,705 

10,349 

26,221 

66,230 

19,535 

4,541 

5,254

167, 71'6

Peak discharge (base, 1,400 sec. -ft. K--June 2 (6 p.m.

May

391 

368 

345 

345 

345

327 

330 

313 

296 

280

264 

258 

283 

345 

452

556 

726 

814 

821 

807

895 

1,060 

1,280 

1,490 

1,650

1,600 

1,650 

1,830 

1,860 

1,860 

2,380

Maximum

330 

249 

219

2,810

230 

720 

2,380 

2,950 

1,250 

301 

289

2,950

) 3,170 sec

June

2,620 

2,900 

2,450 

2,130 

2,250

2,610 

2,950 

2,530 

1,980 

1,820

2,050 

2,450 

2,510 

2,580 

2,580

2,600 

2,600 

2,490 

2,380 

2,270

2,250 

2,240 

2,110 

1,970 

1,770

1,560 

1,490 

1,410 

1,370 

1,310

July

1,250 

1,150 

1,060 

966 

915

852 

838 

922 

894 

768

747 

686 

632 

584 

548

5OO 

475 

540 

500 

480

450 

420 

405 

395 

385

350 

370 

395 

385 

355 

318

Minimum

118 

190 

150

111

175 

160 

164 

258 

1,310 

318 

59 

43

48

-ft.

Aug.

301 

281 

265 

254 

247

243 

229 

199 

157

151

154 

154 

140 

140 

140

137 

132 

123 

115 

109

ipo

96 

88 

86 

88

38 

73 

64 

64 

64 

59

Mean

186 

212 

191

440

209 

190 

184 

345 

846 

2,208 

630 

146 

175

460

Sept.

54 

50 

48 

50 

50

48 

63

111 

123 

127

145 

174 

177 174 ' 

174

174 

196 

199 

271 

258

289 

273 

261 

285 

277

258 

247 

236 

233 

229

Runoff in 

acre-feet

11,430 

12,640 

11,770

318,200

12,850 

10,570 

11,320 

20,530 

52,010 

131,400 

38,750 

9,010 

10,420

332,700

Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note.--No gage-height record Dec. 14-18, Jan. 5-18 and Jan. 26 to Feb. 28; discharge computed on 

basis of 1 discharge measurement, weather records, and records for other Duchesne River stations.
254 GREEN RIVER BASIN

Duchesne River at Myton, Utah

Location.--Water-stage recorder, lat. 40°12', long'. 110°03', in NW^ sec. 25, T. 3 S., R. 

2 W. Uinta meridian, at Myton, 3 miles downstream from Lake Fork.

Drainage area. 2,750 square miles.

Records available.--October 1899 to September 1950 (fragmentary 1903-11).

Average discharge.--42 years (1899-1902, 1911-50), 603 second-feet.

Extremes.--Maximum discharge during year, 3,720 second-feet June 3 (gage height, 5.43 

reet); minimum, 10 second-feet Aug. 26.

1899-1950: Maximum discharge observed, 12,800 second-feet June 10, 1922 (gage 

height, 7.94 feet), from rating curve extended above 8,000 second-feet; minimum discharge, less than 1 second-foot July 16, 1931, and on several days in August and September 1934.

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

WHICH are fair. Large diversions above station for irrigation. Flow affected by 

reservoirs above station.

Discharge, In seoond-feet, water year October 1949 to September 195O

Day

1 

2

3 

4 

5

6 

7 

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.

77 

68 

68 

65 

65

65 

68 

74 

111 

135

167 

175 

213 

201 

213

213 

221 

258 

366 

465

390 

310 

296 

305 

318

314 

305 

305 

314 

274 

283

Nov.

328 

332 

332 

346 

346

332 

300 

287 

253 

270

323 

274 

266 

279 

305

323 

328 

318 

310 

314

337 

356 

*356 

361 

370

366 

361 

356 

318 

292

Dec.

279 

253 

249 

253 

221

245 

260 

260 

260 

270

a280 

a260 

240 

220 

*220

240 

270 

310 

360 

360

350 

340 

330 

320 

370

f 350

Jan.

350

 a35O 

(*)

Feb.

 a330

1 (*) 

. a320

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year1 1949

1.. .....................................

ter year 1949-5O .......................

Mar.

a320 

a350 

a390 

a430 

a450

a420 

a400 

a410 

420 

420

400 

380 

370 

415 

*455

445 

445 

486 

455 

435

430 

425 

410 

415 

425

430 

385 

356 

351 

361 

366

Apr.

385 

425 

475 

425

337

337 

314 

351 

430 

410

366 

366 

380 

430 

508

475 

508 

608 

692 

692

742 

944

1,200 

1,350 

1,220

1,060 

976 

928 

875 

762

Secondfoot-days

6,702 

9,639 

9,120

240,222

10,850 

9,060 

12,650 

18,971 

40,353 

77,430 

16,353 

1,961 

4,390

217,479

May

698 

674 

650 

686 

674

626 

614 

614 

568 

546

518 

491 

480 

546 

762

976 

1,150 

1,400 

1,480 

1,500

1,520 

1,730 

2,010 

2,230 

2,370

2,410 

2,300 

2,400 

2,500 

2,440 

2,790

Maximum

465 

370

5,970

486 

1,350 

2,790 

5,640 

1,130 

190 

310

3,640

June

3,360 

3,640 

3,400 

2,630 

2,530

2,870 

3,260 

3,140 

2,330 

1,900

2,020 

2,480 

2,680 

2,680 

2,760

3,060 

3,480 

3,300 

3,150 

2,900

2,900 

2,830 

2,670 

2,440 

2,070

1,680 

1,460 

1,350 

1,260 

1,200

July

1,130 

1,040 

936 

845 

775

710 

686 

768 

796 

698

680 

620 

540 

480 

450

425 

370 

395 

470 

440

361 

318 

292 

287 

283

249

213 

253 

332 

274 

237

Minimum

65 

253 

220

27

320 

314 

480 

1,200 

£13 

13 

17

13

Aug.

190 

178 

156 

145 

124

114 

114 

105 

86 

63

49 

52 

57 

57 

49

46 

46 

44 

41 

35

33 

25 

14 

15 

14

13

16 

20 

19 

20 

21

Mean

216 

321 

294

658

350 

324 

408 

652 

1,302 

2,581 

528 

63.3 

146

596

Sept.

19 

2O 

17 

20 

20

20 

27 

35 

31 

39

54 

alOO 

a!40 

a!35 

a!30

a!25 

a!45 

a!60 

alSO 

a210

a310 

300 

287 

300 

310

287 

258 

241 

241 

229

Runoff In 

acre-feet

13,290 

19,120 

18,090

476,500

21,520 

17,970 

25,090 

37,630 

80,040 

153,600 

 32,440 

3,890 

8,710

431,400

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 2 discharge measurements, weather records, 

and records for other Duchesne River stations.

Note. Stage-discharge relstion affected by ice Dec. 6-10, Dec. 13 to Jan. 6, Mar. 9-12.
GREEN RIVER BASIN 255

Duchesne River near Randlett, Utah

Location. - -Water-stage recorder, lat. 40°13', long. 109°47', in SE-jSE^ sec. 17, T. 3 S., 

RTU~E. Uinta meridian, a quarter of a mile downstream from Uinta River, If miles 

southeast of Wandlett, and 6§ miles southeast of Port Duchesne.

Drainage area.--3,920 square miles.

Records available.--October 1942 to September 1950.-

Extremes.--Maximum discharge during year, 5,520 second-feet June 2 (gage height, 5.88 

 feet); minimum daily, 71 second-feet Aug. 30, 31, Sept. 3-7.

1942-50: Maximum discharge recorded, 8,500 second-feet June 19, 1949 (gage height, 

7.55 feet); minimum, 12 second-feet Sept. 14, 1948.

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

which are fair. Plow regulated by several reservoirs. Diversions above station for 

irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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 

3O 

31

Oct.

204 

197 

197 

185 

185

197 

204 

242 

341 

383

383 

359 

378 

368 

383

383 

373 

*T3 

583 

784

669 

566 

516 

503 

510

503 

490 

470 

483 

442 

436

Nov.

470 

490 

483 

483 

483

470 

453 

442 

419 

442

516 

490 

459 

477 

510

510 

516 

516 

496 

490

483 

496 

510 

523 

536

523 

516 

523 

503 

516

Dec. Jan.

477 

453 

408 

398 

363

393 

459 

490 

483 

503

503 

359 

328 

232 

238

*311 

398 

470 

523 

636

661 

529 

b480 

b460 

b530

. b500

I b500

 a500 

(*)

Feb.

 a480 

I 3470

(.)

> b470 

. a470

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 1949

ter year 1949-50 .......................

Mar.

a5OO 

a580 

b660 

b720 

b740

b690 

a64O 

a66O 

*a680 

b700

b660 

b640 

636 

661 

748

757 

775 

766 

694 

*652

628 

604 

596 

604 

652

686 

628 

551 

529 

529 

536

Apr.

536 

574 

581 

a550 

a490

a480 

a45O 

a520 

a560 

a520

a490 

a480 

a530 

a580 

a630

a580 

a620 

677 

775 

739

766 

934 

1,180 

1,490 

1,420

1,180 

1,090 

1,030 

998 

862

Secondfoot-days

12,330 

14,744 

14,085

322,912

15,500 

13,260 

20,102 

22,312 

49,152 

97,440 

22,769 

4,549 

6,760

293,003

May

784 

730 

703 

775 

924

823 

823 

813 

739 

703

644 

588 

551 

574 

730

998 

1,110 

1,260 

1,580 

1,660

1,720 

2,060 

2,560 

2,940 

3,240

3,180 

2,740 

2,890 

3,160 

3,160 

3,99O

Maximum

784 

536 

661

8,230

775 

1,490 

3,990 

5,170 

1,230 

345 

424

5,170

June

4,89O 

5,170 

4,710 

3,530 

3,180

3,740 

4,550 

4,430 

3,080 

2,580

2,680 

3,260 

3,500 

3,420 

3,460

3,590 

4,010 

3,86O 

3,720 

3,400

3,220 

3,200 

3,100 

2,830 

2,450

2,010 

1,700 

1,490 

1,340 

1,340

Minimum

July

1,230 

1,160 

1,090 

1,020 

934

823 

766 

924 

1,090 

987

1,010 

956 

794 

686 

604

596 

588 

566 

644 

636

596 

574 

558 

544 

523

516 

496 

496 

510 

459 

393

185 

419 

232

71

500 

450 

551 

1.34O 

393 

71 

71

71

Aug.

345 

295 

257 

246 

228

214 

201 

181 

151 

126

137 

137 

134 

140 

140

137 

137 

142 

134 

126

113 

111 

96 

86 

81

77 

79 

79 

77 

71 

71

Mean

398 

491 

454

885

500 

474 

648 

744 

1,590 

3,250 

734 

147 

225

803

Sept.

79 

77 

71 

71 

71

71 

71 

75 

a!30 

a!40

a!70 

a200 

a2lO 

a200 

197

191 

214 

235 

257 

394

424 

413 

398 

383 

393

363 

341 

315 

311 

295

Runoff In 

acre -feet

24,460 

29,240 

27,940

640,500

30,740 

26,300 

39,870 

44,260 

97,490 

193,300 

45,160 

9,020 

13,410

581,200

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 4 discharge measurements, weather records, 

and records for other Duchesne River stations, 

b Stage-discharge relation affected by Ice.
256 GREEN RIVER BASIN

Hades Creek near Hanna, Utah

Loc ation --Water-stage recorder-, lat. 40°32 I , long. 110°52', in SEtr sec. 26, T. 2 N., R.

9 w. Uinta meridian, a quarter of a mile upstream from mouth and 11 miles northwest

of Hanna.

Records available.--August 1949 to September 1950. _ 

Extremes.--Maximum discharge during period, 105 second-feet June 20 (gage height 3 07

I'eet); minimum daily, 0.4 second-foot Oct. 15, 16. 

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

which are fair. Plow affected by two irrigation diversions about 2,000 feet above

station.

Discharge, In second-feet, 1949-50 

1949

Day

Sept. 1

2

3

4

5

6

7

8

Discharge

5.3

4.6

4.2

4.2

3.9

3.7

3.5

3.2

Day

Sept . 9

10

11

12

13

14

15

16

Discharge

3.2

3.0

2.5

2.3

2.4

2.3

2.2

2.0

Day

Sept. 17

18

19

20

21

22

23

24

Discharge

1.6

1.6

1.6

1.4

1.2

1.2

1.2

1.0

Day

Sept. 25

26

27

28

29

30

31

Discharge

1.0

.9

.9

.8

.8

.7

_

Note. Mean dally discharge for Aug. 30, 31 was 5.6 second-feet each day.

1949-50

Day

1 

2 

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

Oct.

0.6 

.6 

.6 

.6

.6

.6 

.6

.6

.6

.6

.5

.5

.5

.5

.4

.4

.5

.6

.6

.5

.5

1.9

1.6

1.8

*1.9

2.0

2.0

2.0

2.2

2.6

3.2

Nov.

3.2 

3.2 

3.5 

3.0

3.5

3.5 

3.5

3.7

3.7

3.9

3.7

b3.5

b3.5

3.7

3.5

3.5

3.5

3.5

3.5

3.5

b3.5

D3.5

b3.5

3.5

3.2

3.2

3.2

3.2

*3.2

b3.0

-

Dec.

b3.0

a3.0

Jan.

a2.5

Feb.

 a2.0

a2.2

*2.2

2.2

2.0

2.2

2.2

2.2

2.2

-

Mar.

 b2.0

Apr.

\ b2.3

t

> D2.6

b3.0

2.9

2.8

2.8

3.2

*3.7

3.7

3.5

4.4

5.6

6.1

5.9

7.3

9.4

12

13

12

12

11

11

11

11

10

May

9.8 

9.1 

9.1 

8.4

7.8

7.5 

7.5

7.0

7.0

6.4

7.0

7.5

7.8

9.4

11

12

16

17

18

19

21

26

31

36

38

38

39

41

39

44

54

June

56 

60 

50 

50

.57

67 

63

50

46

48

57

63

63

r.5

65

67

65

63

63

68

64

65

63

60

60

55

50

49

48

45

July

44 

44 

42 

41

39

38

37

36

35

35

33

32

31

31

30

29

28

27

26

25

23

22

20

18

17

16

16

15

15

15

14

Aug.

14 

13 

11 

11

11

10 

9.4

8.4

7.3

7.8

4.6

4.4

4.4

4:4,

4.2

4.2

4.2

5.1

6.4

6.4

6.4

6.1

5.9

5.6

5.6

5.3

5.3

5.3

5.1

5.1

5.1

Sept.

5.1

5.1 

5.1 

5.1

4.6

3.9 

3.7

3.2

2.8

2.6

2.6

2.5

2.4

2.3

2.2

2.9

4.2

4.2

4.2

 4.6

4.6

4.8

4.8

4.6

4.6

4.6

4.4

4.4

4.6

4.6

-

Peak discharge (base, 50 see.-ft.). June 15 (10:50 p.m.) 72 see.-ft.; June 20 (12 m.) 105 sec.- 

ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for nearby 

stations.

b Stage-discharge relation affected by Ice.

Monthly discharge, In second-feet, 1949-50

Month

September 1949 .............................

December. ...................................

Calendar year .......................

July. .......................................

September. ..................................

Water year 1949-50 .......................

Secondfoot -days

68.4

32 7

93.0

.

58 4

1 745

119.3

4,172.6

Maximum

5.3

_

5.1

68

Minimum

0.7

-

45

2.2

.4

Mean

2.28

1.05

3.44

3.0

-

2.5

2.09

2.0

6.14

19.7

58.2

28.2

6.84

3.98

11.4

Runoff In 

acre-feet

136

65

204

184

-

154

116

123

366

1,210

3,460

1,730

420

E37

8,270
GREEN RIVER BASIN 257

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

Location.--Water-stage recorder, lat. 40°27', long. 110°59', in SE£ sec. 25, T. IN., R.

iu w. Uinta meridian, 200 feet downstream from Dry Hollow, 5 miles upstream from Wolf

Creek, and 8 miles west of Hanna. 

Records available.--August 1949 to September 1950. 

Extremes . Maximum discharge during period, 687 second-feet May 30 (gage height, 3.93 feet);

minimum, 5.0 second-feet Mar. 22. 

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

which are fair.

Discharge, In second-feet, 1949-5O 

1949

Day

1 

2 

3 

4 

5 

6 

7 

8

Aug.

_

Sept.

17 

17 

17 

17 

16 

15 

15 

14

Day

9 

10 

11 

12 

13 

14 

15 

16

Aug.

:

Sept.

15 

15 

15 

14 

14 

14 

13 

13

Day

17 

18 

19 

20 

21 

22 

23 

24

Aug.

:

Sept.

13 

13 

13 

12 

12 

12 

12 

12

Day

25 

26 

27 

28 

29 

30 

31

Aug.

18 

17 

17 

17 

17

Sept.

12

12 

13 

14 

19 

15

Day

1

2

3

4

5

6

7

9 

10

11

12 

13

14

15

16 

17

18

19 

20

21 

22 

23 

24

25

26 

27 

28 

29

30 

31

Oct.

13

13

13

12 

12

12

13

13

13 

13

13

13

14

13

13

13

13

17

16 

14

14 

13 

14

14

14

*14 

13 

13

13 

12

12

Nov.

12

12

12

12 

12

12

11

12

12 

12

12

11

11

12

13

12

12

12 

11 

11

11 

11 

11

12 

11

11 

12 

*12

12 

10

-

Dec.

10

9

Jan.

8

Feb.

8

9

(*)

10

_

-

Mar.

10

11

12 

11

11

11

12

12

12

12

11

11 

12

12

} "

12

1-

13

Apr.

16

17

16

14 

14

17

19

23

20 

19

19

22

28

31

28

31

41

46 

48 

56

71 

87 

97

93 

86

*86 

85 

73

66 

63

-

May

59

57

56

52 

49

' 47

45

44

43 

44

47

56

63

87

1O9

130

149

162 

162 

177

214 

268 

277

316 

306

309 

360 

360

363 

472

498

June

487

413

347

363 

393

417

350

262

232 

232

265

268

260

248

251

232

217

204 

188 

179

17O 

166 

155

143 

132

123 

118 

113

111 

105

July

102

97

93

90 

83

81

83

89

79 

74

72

66

60

58

55

52

50

50 

47 

45

44 

44 

42

41 

41

38 

38 

38

37 

34

32

Aug.

31

30

2S

28 

27

26

25

25

24 

25

26

24

23

23

22

22

21

21 

20 

2O

20 

19

19

19 

18

18 

18 

17

17 

17

17

Sept.

16

16

16

16 

16

16

17

18

18 

17

20

19

17

17

17

17

17

16 

16 

17

17 

16 

18

17

16

15 

15 

15

15 

15

:'eak discharge (base. 5OO sec.-ft.).--May 3o (8:30 p

* Winter discharge measurement made on thlB day.

Note. Stage-discharge relation affected by Ice Nov.

187~I9~, 21-24, 26-30, Apr. 3-5 (no gage-height record

discharge computed on basis of 1 discharge measurement

stations).

m.) 687 sec.-ft.

12-14, 16-26, Nov. 30 

Jan. 5-15, Jan. 27 to 

weather records, and

to Mar, 

Feb. 7, 

recordt

9, Mar. 11-16, 

Feb. 20-22; 

for nearby

Monthly discharge, In second-feet, 1949-50

Month

August 27-31, 1949............... . 

December. .......................... 

Calendar year .......................

September. ..................................

Water year 1949-5O. ......................

Sccondfoot-days

, ... §fe 

425

349

289

-

248

1 332

498

18,8OO

Maximum

18 

19

17

13

-

20

498

MlnimiB

 Tf 

12

12

10

-

-

32

15

-

Mean

 TTT 

i*,?

13.3

11.6

9.3

-

44.4

238

16.6

51.5

Runoff In 

aci-«-fe«t

843

817

692

573

-

484

70O

2,640

14,170

1,370

988

37,290
258 GREEN RIVER BASIN

West Pork Duchesne River near Hanna, Utah

Location.--Water-stage recorder, lat. 40°27', long. 110 0 S3', in SE£ sec. 27, T. IN., R. 

9 W.'Uinta meridian, 1,000 feet upstream from Wolf Creek and 4 miles west of Hanna.

Drainage area'. 61 square miles.

Records available.--May 1904 to October 1904 (fragmentary), August 1921 to March 1922, 

October 1922 to September 1923, October 1945 to September 1950.

Extremes.--Maximum daily discharge during year, 550 second-feet May 31; minimum recorded, 

0.6 second-feet Dec. 1.

1904, 1921-23, 1945-50: Maximum daily discharge*; that of May 31, 1950; minimum recorded, 7.1 second-feet Dec. 17, 1946.

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

which are fair. No diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

 5

6 

7 

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.

20 

20 

20 

19 

19

20 

20 

22 

23 

22

20

22 

23 

21 

20

20 

20 

26 

27 

23

22 

19 

20 

20 

20

18 

16 

15 

16 

16 

14

Nov.

15 

15 

16

14 

14

13 

13 

16 

16 

16

14 

14 

14 

17 

18

16 

16 

14 

14 

14

13 

13 

14

17 

17

16 

18 

*18 

18 

14

Dec.

13 

14 

14 

12 

14

16 

16 

17 

18 

16

14 

14

b!3 

a!3

Jan.

a!2

Feb.

a!2

a!3 

a!4 

a!5 

a!5 

a!6

a!7 

*a!7 

18 

18 

19

20 

19 

19

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

20 

20 

20 

20 

20

21 

21 

22 

21 

22

21 

22 

b23 

25 

24

25 

23 

23 

24 

24

25 

25 

25 

26 

24

24 

24 

24 

26 

27 

25

Apr.

27 

29 

26 

21 

21

24 

a25 

a28 

a25 

a24

a25 

a32 

»a42 

46 

43

50 

65 

69 

71 

80

105 

135 

148 

138 

125

121 

121 

114 

100 

93

Secondfoot-days

623 

457 

425

20,614

372 

400 

716 

1,973 

6,775 

8,140 

2,132 

978 

765

23,756

May

90 

90 

88 

82 

80

78 

76 

72 

71 

69

73 

82 

100 

123 

155

193 

226 

237 

237 

243

281 

329 

356 

360 

379

362 

373 

a400 

a410 

a510 

a550

Maximum

27 

18

335

20 

27 

148 

550 

540 

118 

40 

30

550

June

a540 

466 

388 

388 

433

445

397 

306 

268 

268

295 

306 

295 

290 

287

273 

255 

234 

222 

210

200 

193 

179 

172 

159

148 

140 

133 

127 

123

July

118 

114 

108 

101 

94

88

91 

101 

90 

82

79 

73 

68 

66 

62

60 

58 

58 

54 

53

52 

50 

49 

48 

48

45 

45 

47 

46 

43 

41

Minimum

14 

13

-

20 

21 

69 

123 

41 

25 

22

-

Aug.

40 

39 

38 

39 

38

35 

35 

34 

33 

35

37 

35 

34 

33 

31

31 

31 

31 

29 

28

28 

28 

27 

26 

26

27 

27 

26 

26 

26 

25

Mean

20.1 

15.2 

13.7

56.5

12.0 

14.3 

23.1 

65.8 

219 

271 

68.8 

31.5 

25.5

65.1

Sept.

25 

24 

23 

23 

24

24 

26 

28 

28 

27

29 

30 

26 

26 

26

27 

28 

25 

25 

27

28 

25 

28 

27 

24

23 

22 

23 

22 

22

Runoff In 

acre-feet

1,240

906 

843

40,890

738 

793 

1,420 

3,910 

13,440 

16,150 

4,230 

1,940 

1,520

47,130

Peak discharge (base. 300 sec.-ft.).--About May 31 (time and discharge unknown). 

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 1 discharge measurement, weather records, 

and records for nearby stations.

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 259

Wolf Creek above Rhodes Canyon, near Hanna, Utah

Location.--Water-stage recorder, lat. 40°28 T , long. 110°55 T , in NW^ sec. 21, T. IN., R. 

9 W. Uinta meridian, ij miles upstream from Rhodes Canyon, 2| miles upstream from 

mouth, and 5| miles northwest of Hanna.

Drainage area.--9 square miles.

Records available.--October 1945 to September 1950.

Extremes.--Maximum discharge during year, 58 second-feet June 5 (gage height, 2.30 feet); 

minimum daily, 3.4 second-feet on several days in March.

1945-50: Maximum discharge, 72 second-feet June 11, 1949 (gage height, 2.60 feet); 

minimum not determined.

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

No diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

6.8 

6.6 

6.6 

6.6 

6.6

6.6 

6.8 

6.8 

6.6

 a6.6

a7.2 

a7.0 

a6.6

a6.5 

a6.2 

a6.6 

a6.6 

a6.6

5.9 

5.9 

5.9 

5.9 

5.9 

5.9

Nov.

5.7 

5.7 

5.7 

5.5 

5.5

. a5.0

5.0 

4.8 

4.8

Dec.

.8 

.8 

.7 

.7 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.5 

.5 

.5 

.5

Jan.

.3 

.1 

.1 

.1

.1

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.0 

.0

.0 

.0

.1

.0

.0

.0

.1 .1

.0 

.0 

.0

Feb.

4.0 

4.0 

4.0 

4.0

4.0

4.0 

4.0 

4.0 

4.0 

4.0

4.0 

4.0 

4.0

4.0 

3.8

4.0 

4.0 

4.0 

3.8 

3.8

3.8

s'.8 

3.8 

3.8

3.8 

3.8 

3.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194

ter year 1949-50 .......................

Peak discharge (tase, 25 sec. -ft.). June

a No gage-height record; discharge compute

Mar.

3.8 

4.0 

4.0 

4.0 

4.0

3.8 

3.8 

3.8 

3.8 

3.6

3.6 

3.6 

3.6 

3.6 

3.4

3.4 

3.6 

3.6 

3.6 

3.4

3.4 

3.6 

3.4 

3.6 

3.4

3.4 

3.6 

3.6 

3.6 

3.6 

3.8

Aor.

3.8 

4.0 

3.8 

3.8 

3.8

3.8 

4.0 

4.0 

4.0 

3.8

4.0 

4.1 

4.3 

4.1 

4.3

4.3 

4.5 

4.5

4.7 

4.8

5.5 

5.9

6.6 

7.1 

6.8

6.6 

6.8 

6.8 

6.6 

6.4

Secondfoot-days

201.6 

152.7 

145.1

3,154.7

126.5 

109.8 

113.0 

147.5 

538. G 

946 

532 

331.7 

259.4

3,603.9

May

6.2 

6.2 

5.9 

5.7 

5.7

5.5 

5.5 

5.2 

5.2

5.2

5.0 

5.0 

5.5 

6.2 

6.6

10 

16 

18 

17 

18

19 

28 32- 

34 

38

34 

36 

36 

35 

41 

42

Maximum

7.2 

5.7 

4.8

41

4.3 

4.0 

4.0 

7.1 

42 

46 

25 

12 

9.2

46

June

42 

38 

32 

33 

46

45 

40 

33 

29 

33

34

34 

33 

32 

31

30 

29 

29 

29 

29

28 

28 

28 

29 

27

25 

25 

25 

25 

25

July

25 

25 

23 

22 

22

22 

22 

22 

21 

20

20 

19 

18 

18 

17

16 

16 

15 

15 

14

14 

14 

14

13 

13

13 

12

12 

12 

12 

11

Aug.

12 

12 

12 

12 

12

12

12 

12 

12 

12

12 

11 

11 

11 

11

11 

10 

10 

10 

10

9.9 

9.9 

9.9 

9.9 

9.9

9.6 

9.6 

9.2 

9.2 

8.8 

8.8

Sept.

8.8 

8.8 

8.8 

8.8 

8.8

8.5 

8.5 

8.8 

9.2 

9.2

9.2 

8.8 

8.8 

8.5 

8.5

8.8 

8.8 

8.5 

8.5 

8.5

8.5 

8.5 

8.5 

8.8 

8.5

8.3 

8.3 

8.3 

8.3 

8.3

Minima Mean £5"^

5.9 6.50 400 

4.8 5.09 303 

4.5 4.68 288

8.64 6,260

4.0 4.08 251 

3.8 3.92 218 

3.4 3.65 224 

3.8 4.92 293 

5.0 17.4 1,070 

25 31.5 1,880 

11 17.2 1,060 

8.8 10.7 658 

8.3 8.65 515

3.4 9.87 7,160

5 (8:45 p.m.) 58 sec. -ft. 

d on tasis of recorded range in stage, weather records,

and records for nearby stations.
260 GREEN RIVER BASIN

Rock Creek near Hanna, Utah

Location.--Water-stage recorder, lat. 40°33', long. 110°40', In SE£ sec. 22, T. 2 M., R.

7 W.Ulnta special meridian, 10.5 miles northeast of Hanna. 

Records available.--July 1949 to September 1950. 

Extremes.--la^a: Maximum dally discharge during period July to September, 176 second-feet

July 23; minimum daily, 44 second-feet Sept. 25.

1949-50: Maximum discharge during water year, 1,780 second-feet June 6 (gage

height, 7.32 feet); minimum, 16 second-feet Dec. 4. 

Remarks.--Records excellent except those for periods of doubtful or no gage-height record,

which are fair.

Discharge, In second-feet, 1949-5O 

1949

Day

1

2

3

4

5

6

7

8

July

-

-

-

-

-

-

_

-

Aug.

120

117

116

114

111

107

107

123

Sept.

66

68

66

63

61

59

58

58

Day

9

10

11

12

13

14

15

16

July

-

-

-

-

-

-

.

-

Aug.

128

136

111

101

95

91

88

85

Sept.

58

62

72

61

61

61

58

55

Day

17

18

19

21

22

24

July

_

_

-

_

_

-

176

167

Aug.

83

82

78

75

74

71

79

88

Sept.

52

51

50

48

47

47

46

46

Day

25

27

30

July

158

150

146

139

133

128

123

Aug.

78

71

68

67

65

63

65

Sept.

44

45

45

47

58

53

_

Peak discharge (base, 1,100 see.-ft.).--Mo peak above base.

1949-50

Day

1

2

3

4

5

6

7

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

46

44

44

44

44

47

51

55

53

51

53

59

56

51

50

51

73

67

64

60

54

58

53

51

50

51

48

50

46

46

Nov.

46

45

45

44

44

44

42

44

44

47

47

46

46

48

46

44

44

43

44

42

40

40

42

44

41

41

40

41

39

*35

~

Dec.

30

32

33

26

30

34

35

34

34

36

30

27

38

36

38

37

36

38

40

40

39

38

38

38

38

40

39

38

36

35

33

Jan.

34

36

35

35

37

37

37

38

38

38

39

39

38

38

36

39

42

45

44

44

45

46

44

39

35

37

41

47

45

*43

43

Feb.

43

42

43

414<~

39

40

40

40

38

38

37

36

36

35

34

34

32

32

32

30

32

32-

32

32

30

30

29

-

-

-

Mar.

28

29

29

30

32

30

29

30

29

29

28

28

33

29

27

27

28

27

28

27

?9

27

29

30

29

29

30

29

32

31

35

Apr.

39

42

39

34

36

39

42

46

44

40

43

47

52

57

55

59

79

89

84

94

128

162

190

185

160

150

147

137

121

111

-

May

110

107

102

95

91

89

85

84

81

76

78

88

103

134

172

217

270

283

277

306

376

483

566

657

715

688

772

819

751

917

1,260

June

1,430

1,380

1,020

951

1,160

1,490

1,430

936

755

815

1,100

1,320

1,320

1,420

1 ,'430

1,470

1,42O

1,320

1,250

1,180

1,210

1,160

1,060

951

793

727

723

699

688

657

-

July

608

583

528

480

443

414

405

473

414

373

362

320

298

275

252

228

221

221

204

192

181

170

164

160

154

148

156

167

167

143

132

Aug.

124

119

116

111

110

103

97

94

90

91

97

85

81

81

76

74

70

67

66

64

62

60

59

58

57

57

57

56

55

54

53

Sept.

52

51

51

51

51

51

53

62

59

57

63

62

57

54

50

50

51

47

48

59

d75

d73

d7l

d71

69

67

63

60

59

58

Peak discharge (base, 1,100 see.-ft.). June 1 (8:30 p.m.) 1,68O sec.-ft.; June b (lO:30 p.m.; 

1,780 sec.-ft.; June 16 (10:30 p.m.) 1,760 sec.-ft.

* Winter discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of records for Rock Creek near Mountain 

Home.

Note. Ho gage-height record Jan. 5-29, Mar. 24 to Apr. 13j discharge computed on basis of 

weather records and records for Rock Creek near Mountain Home.

Monthly discharge, in second-feet, 1949-50

Month

September. ..................................

The period ................................

December. ...................................

Calendar year .......................

May.........................................

September. ..................................

Water year 1949-50. .......................

Secondfoot-days

1,320

1,666

.

1,096

-

999

2 551

1,745

67,046

Maximum

176

136

72

_

40

-

35

75

1,490

Minimum

123

63

44

_

26

-

29

47

26

Mean

147

92.2

55.5

_

52.2

35.4

-

35.7

29.3

350

58.2

184

Runoff In 

acre -feet

2,620

5,670

3,300

11,590

3,210

2,170

-

1,800

21,520

17,920

3,460

133,000
GREEN RIVER BASIN 2dl

Rock Creek near Mountain Home, Utah

Location.--Water-stage recorder, lat. 40°29'30", long. 110"34'40", in SWij sec. 9, T. 1 N., 

RTTT~W. Uinta meridian, at Lower Stillwater dam site "B", a third of a mile upstream 

from Corral Creek, 7 miles downstream from South Fork, and 12 miles northwest of 

Mountain Home. Altitude of gage, about 7,250 feet.

Drainage area.--149 square miles.

Records available.--November 1937 to September 1950.

Average discharge.--12 years (1938-50), 169 second-feet.

Extremes.--Maximum discharge during year, 1,670 second-feet June 7 (gage height, 5.13 

reet); minimum, 12 second-feet Mar. 12.

1937-50: Maximum discharge, 2,170 second-feet June 19, 1949 (gage height, 5.73 

feet); minimum, 7 second-feet Mar. 13, 1940, Mar. 20, 1942 (probably caused by ice jams 

above station).

Remarks.--Records excellent. No diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

68

65 

63 

62 

62

63 

65 

71 

79 

73

69 

74 

79 

76 

71

69 

70 

95 

98 

85

82 

72 

78 

73 

72

70 

71 

67 

71 

66 

64

Nov.

65 

64 

64 

63 

63

63

60 

67 

66 

72

70 

64 

66 

68 

67

64 

62 

61 

62 

59

58 

57 

58 

62 

57

58 

57 

57 

56 

53

Dec.

51 

52 

55 

45 

49

54 

54 

51 

52 

55

50 

38 

45 

49 

52

56 

55 

56 

58 

58

56 

55 

57 

57 

55

59 

58 

56 

55 

54 

53

Jan.

53 

54 

49 

49 

51

51 

51 

52 

52 

53

53 

53 

52 

53 

51

55 

57 

63 

63 

63

63 

64 

63 

58 

49

50 

57 

61 

57 

56 

50

Feb.

51 

46 

49 

50 

51

53 

51 

49 

50 

51

50 

48 

47 

48 

47

46 

46 

46 

45 

45

44 

44 

44 

45 

46

49 

49 

49

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri 

May

June 

July 

Augu 

Sept

Wa

ber. ....................................

lendar year 1949

ter year 1949-50 .......................

Mar.

4C 

49 

47 

49 

52

49 

49 

49 

49 

47

48 

45 

48 

49 

47

47 

47 

47 

45 

45

4G 

46 

47 

47 

46

47 

48 

46 

50 

48 

52

Apr.

58 

64 

60 

52 

53

56 

61 

68 

65 

60

61 

66 

74 

81

76

78 

90 

105 

104 

108

137 

176 

208 

210 

185

174 

171 

1G4 

146 

133

Secondfoot-days

2,243 

1,8C3

1,650

74,758

1,706 

1,339 

1,477 

3,144 

11,311 

34,458 

10,476 

3,475 

2,600

75,742

May

129 

128 

124 

119 

114

113 

111 

110 

102 

100

98 

105 

119 

146 

183

229 

289 

306 

293 

3O6

370 

476 

579 

655 

728

677 

740 

83G 

812 

954 

1.2CO

Maximum

98 

72 

59

1,850

64 

53 

52 

210 

1,260 

1,510 

672 

160 

108

1,510

June

1,370 

1,370 

! 1,120 

I 1,030 

1,190

1,430 

1,510 

1,090 

850 

869

1,110 

1,320 

1,300 

1,380 

1,450

1,490 

1,450 

1,360 

1,300 

1,210

1,230 

1,200 

1,120 

1,020 

869

788 

788 

764 

758

722

July

672 

628 

590 

533 

499

471 

453 

548 

490 

427

423 

378 

348 

316 

293

273

261 

2C4 

246

226

215 

202 

198 

195 

188

180 

192 

205 

215 

178 

169

Minimum

62 

53 

38

38

49 

44 

41 

52 

98 

722 

169 

78 

74

38

Aug.

160 

15G 

150 

146 

144

135 

131 

128 

122 

126

137 

126 

121 

119 

116

111 

107 

102 

100 

97

94 

93 

90 

89 

86

85 

84 

81 

81 

80 

78

Mean

72.4 

62.1 

53.2

205

55.0 

47.8 

47.6 

105 

3G5 

1,149 

338 

112 

86.7

208

Sept.

78 

77 

74 

74 

74

74 

78 

100 

95 

89

100 

101 

91 

86 

82

85 

90 

82 

82 

91

108 

100 

94 

95 

91

89 

85 

79 

79 

77

Runoff in 

acre-feet

4,450 

3,700 

3,270

148,400

3,380 

2,660 

2,930 

6,240 

22,440 

68,350 

20,780 

6,890 

5,160

150,200

Peak discharge (base. 1,200 aec.-ft.). June 

ft.; June 16 (3 a.m.) 1,630 sec.-ft.

2 (2 a.m.) 1,480 sec.-ft.; June 7 (3 a.m.) 1,670 sec.-
262 GREEN RIVER BASIN

Strawberry Reservoir near Soldier Springs, Utah

Location.--Staff gage, lat. 40 0 10UO", long. 111°10'45", in sec. 36, T. 3 S., R. 12 W. 

Uinta meridian, at east portal of Strawberry tunnel, 7 miles southwest of Soldier 

Springs and 22 miles east of Sprlngville. Datum of gage is mean sea level (levels by 

Bureau of Reclamation).

Drainage area 170 square miles (includes that portion of drainage areas of Indian Creek 

ana Trail Hollow above diversion dams.

Records available.--October 1945 to September 1950. January 1913 to September 1945 in 

flies or salt Lake City district office, Geological Survey.

Extreries.--Maximum contents observed during year, 167,100 acre-feet June 1 (elevation, 

7,544.60 feet); minimum observed, 104,310 acre-feet Nov. 1 (elevation, 7,534.90 feet).

1913-50: Maximum contents observed, 265,800 acre-feet June 1, 1922 (elevation, 

7,560.2 feet), fron capacity table then in use; minimum contents observed, 13,500 acrefeet Oct. 1, 1931 (elevation, 7,520.20 feet), 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. 4 S., R. 11 W. Uinta meridian, and Indian Creek dike, a rock-faced earth fil] 

37 feet in height with concrete core-wall, completed Sept: 20, 1913. Storage began 

July 14, 1912. Capacity at spillway crest, 283,000 acre-feet (elevation, 7,558.0 feet) 

gross conterts. Dead storage below intake to tunnel, 13,000 acre-feet (elevation, 

7,512.0 feet). Dead storage prior to Jan. 1, 1934, when outlet was lowered, approximately 28,000 acre-feet. Gage is read to half-tenths on first day of each month. 

Water diverted through Strawberry tunnel and used in vicinity of Spanish Pork in Great 

Basir. 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 elevation and contents, water year October 1949 to September 1950

Date

Nov. 1.. .....................

Calendar year 1949 .........

Jan. 1.... ...................

Mar. 1... ....................

May 1 .......................

Oct. 1.............. .........

Water year 1949-50. ........

Elevation 

(feet)

-

,538.10

-

Contents 

(aore-feet)

-

123,830

-

Change in contents 

during month 

(acre-feet)

+17,600

+18,930
GREEN RIVER BASIN 263

Strawberry River near Soldier Springs, Utah

Location. --Water-stage recorder, lat. 40°08'15", long. 111°01'35", in NW^NWi sec. 16, T. 

4 S. , R. 10 W. Uinta meridian, half a mile downstream from Stinking Springs, 2^ miles 

upstream from Willow Creek, and 3 miles south of Soldier Springs. Datum of gage is 

7,369.3 feet above mean sea level (levels by Bureau of Reclamation).

Drainage area. --42 square miles (exclusive of 170 square miles tributary to Strawberry 

Reservoir, which includes area above diversion dams on Indian Creek and Trail Hollow 

Creek).

Records available. --October 1942 to September 1950.

Extremes . --Maximum discharge during year, 458 second-feet Apr. 22 (gage height, 3.22 feet); 

minimum, 11 second-feet Jan. 14.

1942-50: Maximum discharge, that of Apr. 22, 1950; minimum recorded, 8.8 second-feet 

Jan. 30, 1947.

Remarks . --Records excellent. Water is diverted from Strawberry Reservoir, 7 miles upstream, to Great Basin (see preceding page). Water is seldom released from reservoir 

into Strawberry River.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

25 

24 

24 

24 

24

24 

25 

25 

25 

26

26 

26 

26

25 

25

25 

25 

27 

36 

31

28 

26 

25 

25 

25

25 

25 

24 

24 

23 

23

Nov.

22 

22 

22 

22 

21

21 

21 

21 

21 

21

21 

21 

21 

21 

21

21 

20 

20 

20 

20

20 

19 

19 

19 

19

19 

19 

19 

19 

19

Dec.

19 

19 

19 

18 

18

18 

18 

18 

18 

19

19 

19 

18 

18 

18

18 

18 

18 

18 

18

18 

18 

18 

18 

18

18 

18 

18 

18 

18 

18

Jan.

17 

17 

17 

17 

17

16 

16 

16 

16 

16

16 

16 

16 

15 

15

15 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

16 

15

Feb.

15 

14 

14 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15

Month

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

15 

15 

15 

16 

16

15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

16 

16

Apr.

17 

18 

18 

19 

19

21 

27 

30 

30- 

28

28 

31 

35 

39 

50

84 

111 

134 

145 

150

186 

256 

273 

163 

112

114 

123 

130 

95 

86

Secondfoot-days

791 

611 

564

13,380

497 

418 

482 

2,572 

2,626 

1,759 

1,263 

980 

796

13,359

May

82 

89 

94 

83 

76

77 

74 

73 

82 

90

83 

80 

84 

88 

92

94 

98 

102 

98 

94

92 

90 

90 

89 

86

84 

80 

73 

70 

70 

69

Maximum

36 

22 

19

222

17 

15 

16 

273 

102 

73 

47 

34 

29

273

June

67 

66 

67 

67 

66

65 

67 

73 

69 

66

64 

61 

61 

59 

59

58 

56 

56 

55 

54

54 

54 

53 

52 

51

51 

48 

47 

47 

46

July

46 

45 

45 

45 

44

45 

45 

47 

45 

44

43 

43 

42 

40 

40

40 

40 

40 

39 

39

38 

38 

38 

37 

37

36 

37 

37 

37 

36 

35

Minimum

23 

19 

18

11

15 

14 

15 

17 

69 

46 

35 

29 

25

14

Aug.

34 

34 

34 

34 

34

34 

33 

33 

33 

33

32 

' 32 

32 

32 

32

32 

31 

30 

30 

30

31 

31 

30 

30 

30

30 

30 

30 

30 

30 

29

Mean

25.5 

20.4 

18.2

36.7

16.0 

14.9 

15.5 

85.7 

84.7 

58.6 

40.7 

31.6 

26.5

36.6

Sept.

29 

28 

28 

28 

28

28 

28 

28 

27 

27

27 

27 

26 

26 

26.

26 

25 

25 

25 

25

26 

26 

26 

26 

26

25 

26 

26 

26 

26

Runoff in 

acre-feet

1,570 

1,210 

1,120

26,560

986 

829 

956 

5,100 

5,210 

3,490 

2,510 

1,940 

1,580

26,500

207364 O - 52 - 18
264 GREEN RIVES BASIN

Strawberry River at Duchesne, Utah

Location.--Mater-stage recorder, lat. 40°10', long. 110C 25', In SWijWEij- sec. 2, T. 4 S., 

RT~5~~W. Uinta meridian, at bridge three-quarters of a mile west of Duchesne and ij 

miles upstream from mouth.

Drainage area. 1,040.square miles (Includes area tributary to Strawberry Reservoir) 

Records available. June 1908 to November 1910, March 1914 to September 1950. 

Average discharge. 36 years (1914-50), 158 second-feet.

Extremes.--Maximum discharge observed during year, 898 second-feet Sept. 19 (gage height, 

iJ.YY feet); minimum not determined, occurred during period of ice effect.

1908-10, 1914-50: Maximum discharge observed, 3,230 second-feet May 27, 1922, from 

rating curve extended above 1,500 second-feet; minimum observed, 1 second-foot on 

several days in July 1931.

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

which are fair. Diversions above station for irrigation. Water diverted from Strawberry Reservoir above station to Great Basin (see p. 262). Records of water temperatures and sediment loads for the water year 1950 are given in Waier-Supply Paper 1189.

Revisions (water years ) . W 1009: 1937-41(M).

Discharge, In second-feet, water year October 1949 to September 1850

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

90 

88 

86 

86 

86

83 

83 

93 

106 

106

105 

105 

106 

105 

105

96 

98 

102 

132 

143

123

113 

110 

108 

108

105 

99 

99 

93 

96 

96

Nov.

96 

93 

93 

93 

92

90 

90 

92 

92 

94

102 

96 

99 

104 

104

105 

105 

104 

102 

102

99 

*98 

98 

98 

98

98 

96 

96 

94 

94

Dec.

90 

83 

88 

81 

80

78 

76 

74 

72 

70

68

1

(«)

65

Jan.

60

(*)

Feb.

55

I1 ( ' J

k 80

> 90

Month

Goto 

Move 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

nber. ...................................

lendar year 1949

ter year 1949-50 .......................

Mar.

90 

1 ( ) 

> 100

110 

120 

120 

123 

123

118 

113 

93 

111 

*113

108 

111 

128 

122 

118

118 

all8 

all8 

118 

118

115 

110 

108 

104 

106 

110

Apr.

127 

147 

172 

153 

139

141 

153 

178 

201 

183

174 

178 

201 

238 

246

238 

294

366 

390 

409

464 

566 

679 

735 

643

572 

576 

600 

555 

490

Secondfoot-daya

3,159 

2,917 

2,160

70,682

1,860 

1,845 

3,464 

10,208 

18,720 

11,184 

4,730 

2,739 

2,651

65,637

May

461 

458 

461 

458 

422

403

400 

387 

366 

359

353 

356 

369 

428 

524

629 

716 

799 

825 

822

806 

829 

848 

863 

844

833 

765 

735 

746 

735 

720

Maximum

143

105 

90

1,020

128 

735 

863 

709 

213 

116 

167

863

June

709 

683 

651 

611 

576

552 

531 

531 

477 

435

406 

375 

353 

335 

323

308 

294 

282 

280 

266

257 

249 

244 

230 

226

218 

208 

199 

190 

185

Ju^y

181 

174 

170 

170 

167

163 

170 

213 

196 

185

190 

174 

167 

159 

153

143 

147 

149 

147 

132

128 

127 

123 

123 

120

120 

120 

127 

139 

130 

123

Minimum

83 

90

-

90 

127 

353 

185 

120 

70 

66

-

Aug.

116 

113 

108 

104 

104

100 

98 

93 

92 

92

92 

90 

90 

89 

90

88 

86 

85 

85 

84

83 

84 

83 

78 

77

77 

75 

72 

71 

70 

70

Mean

102 

97.2 

69.7

194

60.0 

65.9 

112 

340 

604 

373 

153 

88.4 

88.4

180

Sept.

69 

68 

68 

68 

67

66 

69 

76 

78 

81

90 

90 

89 

84 

85

84

90 

90 

167 

102

111 

98 

96 

98 

100

98 

94 

93 

92 

90

Runoff In 

acre-feet

6,270 

5,790 

4,280

140,200

3,690 

3,660 

6,870 

20,250 

37,130 

22,180 

9,380 

5,430 

5,260

130,200

Peak discharge (base, 700 see.-ft.).--Apr. 24 (7 p.m.) 78O sec.-ft.; May 23 (11 p.m.) 883 sec.-ft.; 

Sept. 19 (6 p.m.) 898 sec.-ft.

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge interpolated.

Note. Stage-discharge relation affected by ice Dec. 6 to Mar. 8 (no gage-height record Jan. 12-17, 

Mar. 1).
GREEN RIVER BASIN 265

Currant Creek below Red Ledge Hollow, near Fruitland, Utah

Location. --Water-stage recorder, lat. 40°20 I , long. 111°03', in NW-£ sec. 8, T, 2 S., R. 

10 W. Uinta meridian, 600 feet downstream from Red Ledge Hollow and 13j miles northwest of Fruitland.

Drainage area.--48 square miles.

Records available.--October 1945 to September 1950.

Extremes.--Maximum discharge during year, 520 second-feet May 16 (gage height, 3.68 feet); 

minimum, 4.6 second-feet Sept. 3.

1945-50: Maximum discharge, that of May 16, 1950; minimum, 2.5 second-feet Sept. 7, 

1948.

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

wnTch are fair. Currant Creek feeder canal, constructed by 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.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

7.4 

6.7 

6.7 

6.7 

7.0

7.0 

7.7 

8.4 

9.4 

9.1

9.1 

9.8 

9.8 

8.7 

8.1

7.7 

8.1 

16 

14 

10

9.4 

8.7 

9.8 

9.4 

8.7

9.1 

9.4 

9.4 

9.8 

9.1 

8.4

Nov.

9.1 

9.1 

9.1 

9.1 

9.1

8.7 

9.1 

10 

9.8 

10

10 

10 

10

1111

11 

11 

11

10 

10

*9.4 

9.8 

9.1 

10 

9.8

9.4 

9.4 

9.8 

9.1 

8.7

Dec.

8.1 

8.1 

8.4 

7.4 

7.7

7.4 

8.1 

7.7

8.1

 b8

8 

8

Jan.

7

Feb.

6

Month

Octo 

Nove 

Dece

Ca

janu 

Pebr 

Hare 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-50 ...............

Mar.

' 7 

. 8

} '

10 

11 

12

Apr.

15 

IB 

16 

14 

15

20 

30 

37 

33 

30

35 

*45 

60 

63 

56

77 

112 

114 

112 

152

209 

247 

279 

211 

175

180 

185 

157 

123 

114

Seeondfoot-days

278.6 

292.6 

247.0

11,657.2

217 

168 

250 

2,934 

6,912 

3,004 

697 

259.0 

242.4

15,501.6

May

117 

121 

123 

102 

97

90 

85 

81 

81 

81

91 

114 

159 

239 

289

340 

343 

336 

312 

315

340 

365 

354 

351 

302

254 

245 

289 

285 

309 

302

Maximum

16

11

223

12 

279 

365 

273 

33 

13 

12

365

June

273 

242 

195 

192 

192

188 

162 

140 

120 

100

90 

100 

95 

85 

80

75 

70 

65 

60 

55

51 

48 

48 

47 

45

42 

39 

37 

35 

33

Minimum

July

33 

32 

30 

30 

27

27 

31 

32 

30 

28

26 

24 

25 

23 

27

23 

20 

20 

18 

17

16 

17 

16 

15 

15

14 

16 

18 

17 

14 

16

6.7 

8.7

4.5

14 

81 

33 

14 

5.3 

5.0

-

Aug.

13 

12 

11 

11 

11

10 

10 

9.7 

8.9 

10

11

9.7 

9.7 

9.7 

9.3

8.5 

7.9 

7.5 

7.2 

6.9

6.6 

6.3 

6.3 

6.3 

5.9

5.9 

5.9 

5.6 

5.6 

5.3 

5.3

Mean

8.99 

9.75 

7.97

31.9

7.0 

6.0 

8.1 

97.8 

223 

100 

22.5 

8.36 

8.08

42.5

Sept.

5.3 

5.0 

5.0 

5.0 

5.3

5.9 

6.6 

8.2 

8.5 

7.9

8.5 

8.9 

7.5 

6.9 

7.2

7.2 

9.3 

8.9 

8.5

9.7

10 

9.7 

9.3

12 

10

9.7 

9.4 

9.2 

8.9 

8.9

Runoff In 

acre -feet

553 

580 

490

23,130

430 

333 

496 

5,820 

13,710 

5,960 

1,380 

514 

481

30,750

Peak discharge (base, 150 see.-ft.).--Apr. 23 (7:30 p.m.) 415 sec.-ft.; May 16 (8:30 p.m.) 520 

sec.-ft.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 30 to Apr. 12, June 8-20, Sept. 26-28; discharge computed on 

basis of 2 discharge measurements, weather records, and records for nearby stations.
266 GREEN RIVER BASIN

Currant Creek near Fruitland, Utah

Location.--Water-stage recorder, lat. 40°1S', long. 110°54', in SE^ sec. 21, T. 3 S., R. 9 

w. uinta meridian, 700 feet downstream from Deep Creek, 1,000 feet downstream from 

bridge on U. S. Highway 40, and 3| miles southwest of Fruitland.

Drainage area.--142 square miles.

Records available.--January 1935 to September 1950.

Average dlscharge.--15 years, 47.7 second-feet.

Extremes.--Maximum discharge during year, 795 second-feet May 17 (gage height, 3.57 feet); 

minimum daily recorded, 26 second-feet Oct. 3-6, Dec. 12, but may have been less during 

period of doubtful or no gage-height record.

1935-50: Maximum discharge, 1,040 second-feet July 26, 1941 (gage height, 5.85 

feet), from rating curve extended above 425 second-feet, site and datum then in use; 

minimum recorded, 4 second-feet Mar. 12, 1941, but may have been less during periods of 

ice effect.

Remarks.--Records fair except those for periods of ice effect or doubtful or no gage-height 

record, which are poor. Currant Creek feeder canal, constructed by Bureau of Reclamation in 1936, diverts 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.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4

5

6 

7 

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.

28 

27 

26 

26 

26

26 

27 

29 

31 

31

30 

30 

30 

29 

29

27 

27 

31 

42 

35

32 

32 

33 

34

d35

Nov.

d35

32 

33 

32 

32 

33

32 

31 

31 

33 

33

Dec.

31 

29 

30 

27 

28

30 

31 

31 

32 

31

27 

26 

29 

27 

29

32 

32 

32 

*33 

31

31 

32 

31 

33 

34

36 

34 

34 

34 

34 

33

Jan.

37 

36 

36 

b35 

34

35 

L b35 

35

33 

32 

33 

33 

34

33 

(*)

d33

Feb.

I d30 

a30

> a32

a34 

b34

b34 

a36 

*a36

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949 

apy

1............................. ..........

ter year 1949-50 .......................

Mar.

b3G 

b36 

38 

40 

40

41 

37 

35 

39 

38

36 

37 

31 

33

35

33

*36 

37 

35 

35

33 

35 

34 

37 

38

34 

35 

35 

34

37 

41

Apr.

48

55 

51 

40 

42

52 

70 

79 

73 

66

67 

77 

92 

106 

92

103 

119 

164 

157 

176

223 

315 

328 

307 

223

223 

228 

218 

160 

137

Secondfoot-days

9 S3 

1,022 

964

21,498

1,046 

870 

1,121 

4,091 

7,918 

4,782 

1,718 

1,138 

998

26,631

May

142 

172 

189 

158 

158

155 

151 

144 

141 

142

132 

136 

180 

262 

372

432 

451 

337 

282 

249

276 

309 

343 

314 

345

257 

251 

312 

353 

365 

408

Maximum

42

36

303

37 

36 

41 

328 

451 

356 

70 

46 

37

451

June

356 

331 

276 

254 

262

260 

246 

211 

193 

174

148 

155 

149 

146 

141

132 

122 

d!20 

dl!9 

d!18

dll6 

dl!4 

113 

79 

74

76 

76 

74 

74 

73

July

70 

70 

66 

62 

62

60 

62 

64 

63 

60

59 

58 

56 

54 

64

55 

50 

50 

49 

47

49 

51 

50 

48 

48

47 

48 

51 

52 

47 

46

Minimum

26 

31 

20

-

31 

40 

132 

73 

4G 

31 

30

26

Aug.

46 

43 

42 

42 

41

41 

40 

40 

38 

38

41 

39 

39 

39 

38

37 

37 

36 

35 

34

33 

32 

32 

32 

31

32 

32 

32 

32 

32 

32

Mean

31.1 

34.1 

31.1

58.9

33.7 

31.1 

36.2 

136 

255 

159 

55.4 

36.7 

33.3

73.0

Sept.

32 

31 

31 

30 

30

32 

33 

37 

36 

36

36 

37 

35 

33 

33

33 

34 

33 

33 

33

34 

33 

36 

36 

34

32 

31 

31 

31 

32

Runoff in 

acre-feet

1,910 

2,030 

1,910

42,650

2,070 

1,730 

2,220 

8,110 

15,710 

9,480 

3,410 

2,200 

1,980

52,820

Peak discharge (base. 200 sec.-ft.) . Apr. 24 (2:30 a.m.) 507 sec.-ft.; May 17 (2:30 a.m.) 795 

sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of 1 discharge measurement, weather records, 

and records for station below Red Ledge Hollow.

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge computed on basis of 1 discharge measurement, weather 

records, and records for station below Red Ledge Hollow.
GREEN RIVER BASIN 267

Water Hollow near Fruitland, Utah

Location.--Water-stage recorder, lat. 40°14', long. 110°59', between sees. 2 and 11, T. 3 

S., K. 10 W. Uinta meridian, ij miles upstream from mouth and 1\ miles northwest of 

Fruitland.

Drainage area.--15 square miles.

Records available.--April 1946 to September 1950.

Extremes.--Maximum discharge during year, 27 second-feet May 26 (gage height, 1.77 feet); 

minimum not determined, occurred during period of ice effect.

1946-50: Maximum discharge, that of May 26, 1950; minimum recorded, 2.6 second-feet 

Oct. 4, 1948.

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

which are fair.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

5.7 

5.7 

5.7 

5.7 

5.6

5.6 

5.7 

5.7 

5.9 

5.7

5.7 

5.7 

5.6 

5.6 

5.6

5.6 

5.9 

6.7 

6.7 

5.7

5.7 

5.6 

5.6 

*5.4 

5.6

5.6

5.6 

5.7 

5.6 

5.6 

5.4

Nov.

5.4 

5.4 

5.4 

5.2 

5.2

5.2 

5.2 

5.2 

5.4 

5.9

b6.0 

b5.5 

b5.3 

b5.2 

b5.2

b5.1 

5.0 

4.8 

4.8

L *b4.8

4.8 

4.7

4. 

4. 

4.

4. 

b4.

Dec.

 b4.7 

a4.7

Jan.

a4.5

(»)

. b4.5

Feb.

, b4.3

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

 b4.5 

. a4.5

 aS.O 

. a6.0

Apr.

I a7.0

aS.O 

a8. 5

a9.0

*9.6 

9.6 

8.8 

8.8

9.6 

9.6 

9.2 

9.2 

9.6

9.9 

9.6 

9.9 

9.9 

10

11 

12 

11 

11 

9.9

Secondfoot-days

177.2 

152.6 

145.7

2,761.3

139.5 

120.4 

154.0 

275.7 

465.2 

484 

348.9 

278.9 

213.8

2,955.9

May

9.6 

11 

9.9 

9.6 

9.6

9.6 

9.9 

9.6 

9.6 

8.8

8.8 

8.8 

8.8

9.6 

10

11 

14 

15 

16 

17

17 

18 

20 

23 

25

24 

24 

26 

24 

24 

24

Maximum

6.7 

6.0

23

12 

26 

24 

13 

9.9 

8.1

26

June

24 

24 

21 

20 

18

18 

18 

18

17 

17

16 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

14 

14 

14 

14

14 

14 

13 

13 

13

July

13 

13 

13 

12 

12

12 

13 

13 

12 

12

12 

12 

11 

11 

11

11 

11 

11 

11 

11

11 

10 

10 

10 

11

10 

10 

10 

9.9 

10 

10

Minimum

5.4

-

8.8 

13 

9.9 

7.8 

6.6

-

Aug.

9.9 

9.9 

9.9

9.6 

9.6

9.6 

9.2 

9.6 

9.Z 

9.6

9.6 

9.2 

9.2 

9.6 

9.2

9.2 

9.2 

9.2 

8.8 

8.8

8.5 

8.5 

8.5 

8.5 

8.5

8.1 

8.1 

8.1 

8.1 

8.1 

7.8

Mean

5.72 

5.09

4.70

7.57

4.50 

4.30 

4.97 

9.19 

15.0 

16.1 

11.3 

9.00 

7.13

8.10

Sept.

7.4 

7.8 

7.4 

7.4 

7.4

7.4 

8.1 

7.4 

7.1 

7.1

7.1 

7.4 

7.4 

7.4 

7.1

7.4 

7.1 

6.8 

6.8 

6.8

7.1 

6.8 

7.1 

6.8 

6.6

6.8 

6.8 

6.8 

6.6 

6.6

Runoff In 

acre-feet

351 

303 

289

5,480

277 

239 

305 

547 

923 

960 

692 

553 

424

5,860

* Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on ba 

and records for nearby streams.

b Stage-discharge relation affected by ice.

iis of 1 discharge measurement, weather records.
268

GREEN RIVER BASIN

Lake Pork above Moon Lake, near Mountain Home, Utah

*

Location.--Water-stage recorder, lat. 40°36', long. 110°31", in NVf£ sec. 1, T. 2 N., R. 6 

w. Uinta meridian, 2,000 feet 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 square miles.

Records available.--July 1942 to September 1950. April 1933 to September 1934 at site 

V\ miles upstream, published as West Pork of Lake Pork above Moon Lake, near Mountain 

Home.

Extremes.--Maximum discharge during year, 1,230 second-feet June 6 (gage height, 3.84 

reet); minimum not determined, occurred during period of no gage-height record.

1933-34, 1942-50: Maximum discharge, 2,700 second-feet June 26, 1944 (gage height, 

4.27 feet), from rating curve extended above 700 second-feet; minimum daily recorded, 

13 second-feet Apr. 14, 1933.

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

which are fair.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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 

41 

39 

37 

37

37 

39 

41 

42 

42

41 

45 

48 

47 

43

43 

45 

50 

47 

50

50 

48 

48 

46 

46

46 

46 

45 

46 

45 

43

Nov.

43 

43 

43 

43 

42

42 

42 

43 

45 

43

46 

b44 

b44 

43 

42

 41 

40 

39 

39 

37

39 

37 

37 

37 

36

35 

35 

35 

34 

33

Dec.

b31 

b32 

b33 

b29 

b30

b32 

32 

31 

31 

31

b29 

b23 

b25 

28 

30

31 

30

Jan.

29

> 28

<») 

b28

} -

Feb.

27

25

b25

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

Wo V

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 ...............

Mar.

b25 

25

Apr.

31 

35 

34 

30 

29

32 

35 

38 

37 

34

34 

37 

41 

45 

43

43 

50 

*58 

57 

61

83 

102 

113 

106 

96

90 

92 

85 

75 

72

Secondfoot-days

1,366 

1,202 

937

47,330

883 

730 

775 

1,718 

6,529 

19,669 

6,361 

2,583 

1,660

44,413

May

69 

67 

66 

61 

60

58 

57 

55 

53 

53

54 

58 

67 

85 

109

135 

162 

172 

174 

188

230 

292 

346 

396 

400

367 

412 

464 

451 

579 

789

Maximum

50 

46 

33

1,710

113 

789 

928 

1 378 

120 

66

928

June

928 

832 

584 

528 

703

928 

826 

502 

435 

514

725 

777 

766 

795 

82O

850 

826 

783 

725 

692

725 

670 

623 

541 

435

427 

431 

431 

431 

416

Minimum

July

37 

33 

23

23

29 

53 

416 

100 

56 

44

-

378 

36O 

335 

315 

302

283 

295 

318 

273 

255

247 

227 

213 

196 

181

174 

172 

165 

152 

147

141 

131 

126 

124

115

113 

133 

143 

135 

112 

100

Aug.

97 

94 

98

120 

115

ioa

103

100

97 

100

1O6 

96 

92 

91 

85

81 

77 

74 

71 

71

71 

70 

68 

68 

68

64 

62 

60 

6O 

6O 

56

Mean

44.1 

40.1 

30.2

130

28.5 

26.1 

25.0 

57.3 

211 

656 

205 

83.3 

55.3

122

Sept.

56 

56 

54 

54 

54

54 

56 

64 

62 

58

66 

66 

6O 

54 

54

55 

57 

52 

52 

58

60 

58 

58 

57 

52

50 

47 

46 

46 

44

Runoff In 

acre-feet

2,71O 

2,380 

1,860

93,870

1,750 

1,*50 

1,540 

3,410 

12,950 

39,O1O 

12,620 

5,120 

3,290

88,O9O

Peak discharge (base, 1,OOO sec.-ft.). June 6 (8 p.m 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice 

Note.--No gage-height reco~' "-- ~" *-~ T~

charge relation affer«-Lj by

basis of 1 discharge measure

) 1,230 sec.-ft.
GREEN RIVER BASIN 269

Moon Lake Reservoir near Mountain Home, Utah

Location.--Mercury indicating gage, lat. 40°33'40", long. 110°29'30", in Nfi£ sec. 19, T. 

2 N., R. 5 W. Uinta meridian, at dam on Lake Fork, if miles downstream from Brown Duck 

Creek, 11 miles upstream from Yellowstone Creek, and 12j miles northwest of Mountain 

Home. Datum of gage is mean sea level (levels by Bureau of Reclamation).

Drainage area. 108 square miles.

Records available. December 1937 to September 1950.

Extremes.--Maximum contents observed during year, 37,560 acre-feet July 10-11 (elevation, 

8,139.30 feet); minimum observed, 8,050 acre-feet Oct. 10.

1937-50: Maximum contents observed, that of July 10-11, 1950; minimum observed, 226 

acre-feet 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 

DecT 9, 1937. Capacity, 35,800 acre-feet between elevations 8,072.00 feet (crest of 

original outlet of lake about 2,000 feet upstream from dam) and 8,137.00 feet (top of 

spillway gates). Elevation of spillway erest is 8,121.00 feet and elevation of sill of 

outlet works is 8,064.16 feet. Dead storage between sill of outlet and crest of 

original outlet of lake, 2,050 acre-feet. Dead storage below sill of outlet, 11,690 

acre-feet. Total dead storage, 13,740 acre-feet. Figures given herein represent 

usable contents. Water is used for irrigation on lands under Moon Lake Water Users' 

Association and Uintah Indian Irrigation projects. Gage usually read between 7 and 10 

a.m.

Cooperation.--Gage-height record furnished by Moon Lake Water Users' Association.

Contents, In acre-feet, water year October 1949 to September 195O

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.

9,460

9,190

9,040

8,89O

8,740

8,62O

8,440

8,320

8,200

8,050

8.1OO

8,200

8,280

8,390

8,420

8,440

8,490

8,540

8,740

-

_

_

-

9,340

-

_

-

-

_

-

10,130

Nov.

_

10,340

-

-

-

10,73O

-

-

10,730

-

1O,940

-

-

-

11,34O

_

-

.

11,740

-

_

_

_

_

12,220

_

-

_

_

12,800

-

Dec.

_

-

-

_

-

13,210

-

-

-

-

_

-

_

-

13,880

_

13,99O

_

_

-

_

14,390

_

.

_

14,700

-

-

-

15,020

Jan.

_

-

_

_

-

_

_

-

_

-

_

-

.

_

-

_

_

_

_

-

_

_

_

_

16,710

.

_

_

-

al7,120

Feb.

.

_

-

_

-

_

-

-

-

-

17,950

_

_

_

-

_

_

_

_

-

_

_

_

_

-

.

_

318,960

_

-

Mar.

.

19.O8O

.

_

-

_

-

-

-

-

_

_

_

_

-

_

_

_

_

-

_

_

_

_

-

..

_

_

_

20,760

320,790

Apr.

_

_

_

_

20,950

_

_

_

-

21,600

21,690

21,760

21,820

21,820

21,860

21,820

21,760

21,630

21,560

21,370

21,240

21,110

2O.95O

20,220

20,090

19,580

19,020

18,590

18,010

-

May

16,860

16,210

15,480

15,020

14.5OO

13,990

13,460

12,990

12,520

11,900

11,440

_

-

9,290

9,040

8,740

8,590

8,390

8,200

8,25O

8,490

9,090

9,950

10,760

11,6OO

12,6OO

13,600

14,560

16,300

June

17,610

19)4OO

20,760

21,690

23,340

24,210

27,110

27,890

28,600

29,54O

3O.93O

32,190

33,390

35,100

35,760

35,760

35,760

35,760

35,760

35,760

35,760

35,760

35,760

35,760

35,760

,

_

a36,50O

-

July

36,770

36,770

36,77O

36,810

36,89O

37,O10

37,160

37,360

37,48O

37,56O

37,560

37,480

37,400

37,320

36,930

36.7OO

36,460

35,99O

35,450

34,990

34,570

34,070

33,58O

33,O6O

32,600

32,040

31,600

31,040

30,640

3O.20O

29,760

Aug.

29,320

28,750

28,50O

28,100

27,89O

27,53O

27,250

26,900

26,550

26,130

25,650

25,370

24,820

24,350

23,810

23,270

22,740

22,240

21,690

21,110

20,530

19,900

19,300

18,780

18,O70

17,550

17,070

16,48O

15,890

15,33O

14,640

Sept.

14,24O

13,770

13,260

12,710

12,380

12,O6O

11,790

11,520

11,34O

11,200

11,040

1O,960

11,O2O

10,990

10,99O

10,99O

10,990

1O,940

1O.88O

-

_

1O,65O

10,650

1O,680

10.76O

10,860

10,940

, 10,940

-

Monthly elevation and contents, water year October 1949 to September 195O

Calendar year 1949. . . .

Sept. 3O. ........ ........

Water year 1949-50. . . .

Elevation 

(feet)

-

8,O99.0O

-

Contents 

(acre-feet)

, -

1O,940

-

Change In contents 

during- month 

(acre-feet)

+9,26O

-3,700

+1,150

a No record of elevatlonj contents Interpolated.
270 GREEN RIVER BASIN

Lake Fork below Moon Lake, near Mountain Home, Utah

Location.--Water-stage recorder, lat. 40°33'30", long. 110°29'30", in EI sec. 19, T. 2 N., 

imr~W. Uinta meridian, 2,000 feet downstream from Moon Lake Dam, 2 miles downstream 

from Brown Duck Creek, and 12 miles northwest of Mountain Home.

Drainage area. 110 square mile's.

Records available. April 1942 to September 1950. September 1921 to September 1934

(fragmentary) at dam site 2,000 feet upstream, published as West Fork of Lake Fork near 

Mountain Home.

Extremes.--Maximum discharge during year, 960 second-feet June 17 (gage height, 3.69 feet); 

no flow Oct. 20 to Nov. 5, Nov. 10 to Apr. 11 (gates closed).

1921-34, 1942-50: Maximum discharge recorded, 2,180 second-feet June 19, 1949 (gage 

height, 4.83 feet), from rating curve extended above 860 second-feet; 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.

Discharge, In second-feet, water year October 1949 to September 195O

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.

188 

147 

125 

125 

120

120 

120 

120 

112 

62

16 

16 

16 

17 

17

17 

17 

17 

11 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

O 

0

Nov.

0 

0 

0 

0 

0

29

55 

57 

31 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

O

0 

0 

0 

0 

0

0

o

0 

0

o

Dec. Jan. Feb.

Month

Goto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

 July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

o

12 

13 

12 

25

73 

110 

123 

125 

153

182 

214 

214 

271 

363

363 

363 

367 

384 

388

Secondfoot-days

1,383 

172 

0

49,955.4

0 

0 

0 

3,755 

9,397 

12,329 

10,602 

10,688 

3,651

51,977

May

384 

392 

396 

380 

332

328 

328 

332 

324 

316

335 

380 

376 

376 

372

355 

343 

351 

355 

355

355 

355 

305 

214 

153

139 

139 

142 

156 

167 

162

Maximum

188 

57

0

2,000

0 

0 

0 

388 

396 

869 

474 

388 

316

869

June

162 

164 

170 

173 

176

179 

182 

188 

192 

192

195 

201 

201 

275 

272

869 

848 

835 

757 

688

772 

757 

701 

654 

503

365 

233 

449 

488 

488

July

474 

436 

310 

237 

230

244 

258 

290 

301 

301

294 

282 

294 

3 2O 

335

347 

380 

401 

392 

384

380 

380 

384 

380 

380

380 

392 

367 

343 

343 

363

Minimum

0 

0

0

0

0 

0 

0 

0 

139 

162 

230 

286 

28

0

Aug.

335 

308 

290 

290 

286

286 

297 

308 

347 

343

339 

339 

363 

388 

384

384 

380 

380 

372 

372

367 

367 

363 

363 

359

355 

351 

347 

347 

343 

335

Mean

44.6 

5.7

O

137

0 

0 

0 

125 

303 

411 

342 

345 

122

142

Sept.

316 

308 

301 

261 

237

210 

207 

207 

167 

147

98 

68 

66 

66 

66

68 

86 

95 

90 

93

93 

98 

81 

46 

28

30 

21 

30 

30 

30

Runoff In 

acre-feet

2,740 

341 

0

99,080

0

o

0 

7,450 

18,640 

24, 450 

21,030 

21,200 

7,240

103,100
GREEN RIVER BASIN 271

Lake Fork near Upalco, Utah

Location.--Water-stage recorder, lat. 40°15'30", long. 110°13'00", in NE^NE^ sec. 4, T. 3 

b., K. 3 W. Uinta meridian, a quarter of a mile upstream from bridge on State Highway 

86, \\ miles south of Upalco, 9 miles northwest of Myton, and 10 miles upstream from 

mouth.

Drainage area. 418 square miles.

Records available. October 1942 to September 1950.

Extremes.--Maximum discharge during year, 924 second-feet June 17 (gage height, 3.58 feet) 

minimum, 0.2 second-foot Sept. 26-30.

1942-50: Maximum discharge, 4,520 second-feet June 26, 1944 (gage height, 6.05 

feet), from rating curve extended above 1,400 second-feet; minimum daily, 0.1 secondfoot Apr. 16, May 22, 1943, May 8-10 (corrected), 1949.

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

which are poor. Many diversions above and below station for irrigation. Flow partly 

regulated by Moon Lake Reservoir.

Day

1 

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Discharge, in second-feet, water year October 1949 to September 1950

Oct.

0.

z'.&

7.4

5.7 

8.9 

13 

8.8 

.6

.5 

5.8 

9.2 

50 

45

32 

25 

24 

23 

23

21 

20 

20 

20 

22 

22

Nov.

29 

34 

32

30 

29

27 

27 

29 

29 

36

36 

29 

33 

34 

32

30 

31 

29 

23 

22

58 

65 

62 

66 

65

64 

64 

60 

27 

*29

Dec.

29 

27 

30 

32 

38

41 

58 

60 

58 

70

64 

70 

66

70

Jan.

( ) 

65

Feb.

70 

(*)

75

80

88 

95

105

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

115 

*125 

135 

143 

155

140 

99 

*95 

105 

99

87 

78 

74 

90 

83

87 

101 

101 

87 

87

83 

81 

60 

65 

70

66 

56 

54 

49 

54 

60

Apr.

66 

74 

62 

46 

41

37 

30 

31 

34 

35

49 

46 

47 

47 

21

23 

11 

3.9 

4.8 

2.1

1.4 

1.2 

3.0 

3.4 

19

13 

5.7 

4.7 

2.4 

1.8

Secondfoot-days

412.7 

1,161 

1,903

35,678.4

2,015 

2,138 

2,784 

766.4 

673.9 

7,336 

287.6 

23.0 

33.4

19,534.0

May

1.3 

1.6 

1.8 

14 

29

18 

18 

17 

15 

8.4

21 

6.7 

1.3 

4.5 

119

16 

3.4 

1.2 

1.8 

3.2

4.1 

5.2 

41 

39 

30

7.0 

2.4 

21 

13 

13 

196

Maximum

50 

66

3,380

105 

155 

74 

196 

763 

39 

3.9 

7.7

763

June

315 

311 

106 

34 

37

178 

295 

89 

20 

15

67 

160 

127 

112 

138

578 

763 

654 

619 

415

565 

492 

410 

385 

209

87 

27 

25 

46 

57

Minimum

July

0.4 22 ' 

27

.1

49 

1.2 

1.2 

15 

.5 

.3 

.2

.2

39

30 

20 

15 

10

9 

6 

4 

3 

2

1 

1 

.5 

.6 

.9

.6 

.6 

22 

18 

10

8.0 

5.4 

3.9 

3.2 

2.4

1.5 

1.1 

23 

25 

14 

6.9

Aug.

3.9 

2.2 

1.2 

1.1

1.0

.9 

.9 

.8 

.8 

.7

.7 

.7 

.6 

.6 

.5

.5 

.4 

.4 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4 

.3 

.4 

.4 

.4

Mean

13.3 

38.7 

61.4

97.8

65 

76.4 

89.8 

25.5 

21.7 

245 

9.28 

.74 

1.11

53.5

Sept.

0.4 

.4 

.3 

.3 

.3

.3 

.6

.4 

.4 

.4

.5 

.5 

.4 

.5 

.5

.4 

.4 

.4 

4.7 

7.7

5.2 

3.4 

.5 

.5 

.3

.2 

.2 

.2 

.2 

.2

Runoff in 

acre-feet

819 

2,300 

3,770

70,770

4,000 

4,240 

5,520 

1,520 

1,340 

14,550 

570 

46 

66

38,740

* Winter discharge measurement made on this day.

Note. No gage-height record Dec. 22 to Mar. 2 (stage-discharge relation affected by ice during 

most of period), July 2-12 and Aug. 4-14; discharge computed on basis of 3 discharge measurements, 

weather records, and records for nearby streams. Stage-discharge relation affected by ice Dec. 14- 

21, Mar. 3.
272 GREEN RIVER BASIN

Brown Duck Creek near Mountain Home, Utah

Location.--Water-stage recorder and Parshall flume, lat. 40°34', long. 1IO°3I', in NE^ 

sec. 13, T. 2 N., R. 6 W. Unita meridian,a quarter of a mile upstream from mouth, lj 

miles northwest of Moon Lake Darn, and 12 miles northwest of Mountain Home.

Drainage area.--15 square miles.

Records available.--April 1933 to September 1934, October 1942 to September 1950. -

Extremes.- Maximum discharge during year, 106 second-feet May 30 (gage height, 2.37 feet), 

rrom rating curve extended above 60 second-feet; minimum recorded, 1.2 second-feet 

Oct. 11, but may have been less during period of no gage-height record.

1933-34, 1942-50: Maximum discharge recorded, that of May 30, 1950; minimum recorded, 0.9 second-foot Oct. 29, 1942.

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

Flow regulated by Brown Duck Lake Reservoir (usable contents, 3,720 acre-feet). 

Since July 1946, about 0.7 second-foot diverted above station for power purposes.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

2.6 

2.4 

2.2 

2.1 

*2.2

2.1 

2.2 

2.6 

2.7 

2.7

2.6 

2.8 

3.2 

3.0 

2.7

2.7 

3.0 

4.0 

4.4 

4.9

4.0 

4.0 

4.0 

3.8

, 

Nov.

3.0 

(*)

Dec.

2.5

Jan.

2.5 

(*)

Feb.

. 2.0

Month

Oc to 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949 

iry

1. ......................................

ter year 1949-50 ...............

Mar.

2.0

Apr.

2.5 

3.5 

3.5 

3.3 

3.3

3.5 

3.9 

4.2. 

4.1 

3.8

3.8 

4.1 

4.6 

5.0 

4.9

4.8 

5.6 

*6.7 

6.5 

7.6

9.4 

11 

13 

12 

11

11 

11 

10 

9.6 

9.2

Secondfoot -days

97.4 

90.0 

77.5

4,066.4

77.5 

56.0 

62.0 

196.4 

798.6 

971 

331.6 

1,053.6 

300.4

4,112.0

May

8.9 

8.9 

8.5 

8.0 

7.8

7.4

7.1 

6.9 

6.7 

6.5

6.9

7.8 

9.2 

11

14

18 

22 

24 

26 

29

34 

43 

49 

53 

53

48 

51 

52 

49 

59 

63

Maximum

4.9

80

13 

63 

60 

16 

42 

26

63

June

60 

50 

42 

40 

43

46 

43

34 

31 

32

34 

33 

33 

34 

34

34 

33 

31 

30 

29

27 

27 

26 

25 

24

22 

20 

19 

18 

17

July

16 

16 

15 

14 

14

14 

15 

15 

14 

13

12 

12 

12 

11 

10

9.6 

9.2 

9.9 

9.4 

8.9

8.5

7.8 

7.6 

7.6 

7.4

7.1 

7.4 

8.0 

7.6 

6.5 

6.1

Minimum

2.1

-

2.5 

6.5 

17 

6.1 

5.7 

3.0

-

Aug.

5.9 

5.7 

25 

42 

41

41 

41 

40 

40 

40

40 

40

41 

40 

40

39 

39 

37 

35 

35

34 

34

33 

33 

33

32 

31 

31 

30 

28 

27

Mean

3.14 

3.0 

2.5

11.1

2.5 

2.0 

2.0 

6.55 

25.8 

32.4 

10.7 

34.0 

10.0

11.3

Sept.

26 

25 

24 

22 

21

19 

18 

16 

14 

12

11 

9.4 

8.2 

6.9 

5". 5

5.7 

4.9 

4.4 

4.5 

5.3

5.3 

4.5 

4.5 

4.0 

3.7

3.2 

3.0 

3.2 

3.0 

3.2

Hunoff in 

acre-feet

193 

179 

154

8,070

154 

111 

123 

390 

1,580 

1,930 

658 

2,090 

596

8,160

* Winter discharge measurement made on this day.

Note.--Ho gage-height record Oct. 25 to Apr. 17 (stage-discharge relation affected by Ice during 

most of period); discharge computed on basis of Z discharge measurements, veather records, and records fo'r nearby streams.
GREEN RIVER BASIN 873

Yellowstone Creek below Swift Creek, near Altonah, Utah

Location. Water-stage recorder, lat. 40°35', long. 110°21', In sw£ sec. 4, T. 2 N., R. 4 

w. unita meridian, a quarter of a mile downstream from Swift Creek and 13^ miles north 

of Altonah.

Records available.--August 1949 to September 1950.

Extremes. Maximum discharge during period, 1,030 second-feet June 6 (gage height, 4.64 

t'eett; minimum, 38 second-feet Mar. 31.

Remarks.--Records excellent except those for periods of Ice efiect or no gage-height recora, which are fair.

Discharge, in second-feet, 1949-50 

1949

Day

» 1 

2 

3 

4 

5 

6 

7 

8

Aug.

:

Sept.

104 

104 

115 

141 

136 

131 

126 

124

Day

9 

10 

11 

12 

13 

14 

15 

16

Aug.

:

Sept.

124 

126 

126 

117 

113 

113 

108 

104

Day

17 

18 

19 

20 

21 

22 

23 

24

Aug.

1

Sept.

1OO 

96 

92 

88 

85 

81 

80 

78

Day

25 

26 

27 

2S 

29 

30 

31

Aug.

106

102 

102 

102

Sept.

78 

78 

78 

83 

104 

94

Day

1

2

3

4

5

6

7

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.

88

83

80

76

78

76

73

83

85

83

83

85

92

90

85

86

aee

a90

a91

a90

a89

887

a85

a82

878

Nov.

a74

a72

71

71

71

74

74

74

74

74

71

71

71

70

68

67

70

68

67

66

66

66

64

63

-

Dec.

*59

61

61

57

61

61

62

59

61

61

59

b47

b51

b53

b56

b58

b57

58

58

57

b54

b52

b54

55

b53

b55

b54

b53

b52

b51

b50

Jan.

b51

b51

b47

\

f ^47

849

a50

50

50

b46

b40

b41.

847

a52

850

a 48

*b47

Feb.

b47

b44

b45

b46

b47

48

48

b47

b47

b48

47

b46

b44

b46

45

45

44

b44

b44

44

44

b44

44

44

44

44

44

43

_

_

-

Mar.

*b42

44

44

45

45

46

b46

b45

45

44

43

b44

b48

b45

b43

b43

43

42

42

42

b42

42

b42

42

43

42

b42

42

b44

b43

44

Apr.

42

49 48

b46

b47

49

51

55

53

50

51

55

62

63

96

74

76

81

78

85

108

131

138

126

*10S

104

108

106

96

90

May

86

86

85

81

76

74

73

71

68

67

67

68

76

94

113

138

170

180

189

204

250

331

409

467

502

440

484

525

508

626

819

June

844

75O

508

49O

630

817

728

479

451

539

683

700

671

663

656

649

622

582

544

525

531

513

490

451

371

348

348

348

362

357

July

335

314

302

282

271

275

298

318

278

257

246

236

246

220

213

198

195

192

189

186

172

164

159

161

164

161

167

178

172

151

141

Aue.

136

134

134

131

124

117

115

113

110

113

124

120

115

115

108

104

102

98

96

94

92

92

90

88

88

88

86

85

108

113

108

Sept.

104

102

98

115

115

117

115

115

113

113

115

110

104

102

96

98

90

81

83

88

88

85

85

85

81

78

76

73

73

71

Peak discharge (base, 70O see. -ft. ). May 31 (10 p.m.) 1,020 sec. -ft. 5 June 6 (9 p.m.) 1,030 sec.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for nearby 

stations.

t> Stage-discharge relation affected by Ice.

Monthly discharge, In second-feet, 1949-50

Month

September 19*9 .............................

September . ..................................

Water year 1949-50 .......................

Seoondf cot-days

3,127

1,498

1,267

1,349

2,326

7,427

16,650

6,841

3,341

2,869

50,009

Maximum

141

92

74

62

52

48

48

138

819

844

335

136

117

844

Minimum

78

73

63

47

40

43

42

42

67

348

141

85

71

40

Mean

104

83.4

70.5

56.1

48.3

45,3

43.5

77.5

240

555

221

108

95.6

137

Runoff in 

acre-feet

6,200

5,130

4,100

3,450

2,970

2,510

2,680

4,610

14,730

33,020

13,570

6,630

5,690

99,090
274 GREEN RIVER BASIN 

Yellowstone Creek near Altonah, Utah

Location.--Water-stage recorder, lat. 40°31'00", long. 110°20'30", in SW^NEi sec. 4, T. 1 

tT., R. 4 W. Uinta meridian, lj miles downstream from power plant of Moon Lake Electric 

Association, 2 miles downstream from Hell Canyon, 5 miles upstream from mouth, and 

8^- miles northwest of Altonah.

Drainage area.--131 square miles.

Records available.--October 1944 to September 1950.

Extremes.--Maximum discharge during year, 1,070 second-feet June 2 (gage height, 3.71 

reet); minimum not determined, occurred during period of ice effect.

1944-50: Maximum discharge, 1,880 second-feet June 19, 1949 (gage height, 4.55 

feet); minimum recorded, 27 second-feet Nov. 14, 1948.

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

which are fair. Some diurnal fluctuation caused by power plant Ig- miles upstream.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

94 

88 

86 

81 

84

78 

84 

90 

95 

90

90 

93 

101 

99 

96

93 

93

117 

117 

110

106 

101 

101 

98 

98

94 

96 

90 

92 

86 

86

Nov.

87 

84 

81 

81 

81

79 

79 

83 

81 

86

81 

66 

86 

83 

80

79 

78 

76 

76 

75

74 

74 

74 

75 

72

72 

71 

71 

70 

68

Dec.

*68 

69 

71 

69 

71

71 

68 

67 

68 

70

68 

56 

59 

62 

64

I 66

62 

59 

60 

61 

60

64 

63 

62 

60 

59 

58

Jan.

60 

60 

57

54 

56

58

47

49 

54 

61 

60 

58 

55

Feb.

53 

52 

53 

54 

55

57 

56 

54 

55 

56

55

54 

52 

52

50

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

*55 

55 

50 

51 

50

51 

51

50 

50 

49

49 

46 

49 

52 

50

50 

50 

49 

49 

49

50 

50 

50 

50 

51

50 

50 

50 

52 

51 

54

Apr.

57 

61 

60 

56 

56

60 

63 

71 

69 

63

64 

66 

76 

81 

104

93 

96 

101 

96 

99

123 

150 

166 

155 

*135

123 

127 

127 

117 

108

Secondfoot-days

2,927 

2,343 

2,000

60,592

1,747 

1,458 

1,563 

2,823 

8,480 

18,528 

7,258 

3,305 

3,211

55,643

May

104 

104 

106 

101 

93

93 

93 

87 

87 

83

81 

83 

90 

106 

125

152 

186 

205 

216 

231

277 

358 

457 

521 

578

504 

543 

633 

602 

706 

875

Maximum

117 

87 

71

1,500

61 

57 

55 

166 

875 

903 

362 

137 

127

903

June

903 

868 

627 

573 

676

848 

814 

549 

499 

584

734 

787 

747 

747 

728

721 

696 

658 

614 

567

590 

578 

549 

510 

427

3S4 

384 

384 

393 

389

Minimum

July

362 

337 

329 

309 

295

291 

329 

345 

313 

280

273 

250 

266 

234 

228

210 

202 

205 

191 

194

178 

169 

161 

161 

166

164 

166 

176 

181 

152 

141

78 

68 

56

45

47

46 

56 

81 

384 

141 

86 

83

46

Aug.

137 

131 

129 

127 

123

115 

113 

110 

106 

106

121 

119 

113 

115 

110

106 

99 

96 

94 

94

90 

92 

88 

87 

88

88 

86 

86 

104 

117 

115

Mean

94.4 

78.1 

64.5

166

56.4 

52.1 

50.4 

94.1 

274 

618 

234 

107 

107

152

Sept.

110 

106 

103 

117 

119

117 

125 

123 

125 

127

125 

125 

123 

117 

112

115 

108 

98 

98 

101

103 

98 

99 

101 

92

90 

84 

84 

83 

83

Runoff in 

acre-feet

5,810 

4,650 

3,970

120,200

3,470 

2,890 

3,100 

5,600 

16,820 

36,750 

14,400 

6,560 

6,370

110,400

Peak discharge (base, 700 sec.-ft.).--June 2 (12:O1 a.m.) 1,070 sec.-ft.j June 12 (l a.m.) 917 

sec.-ft.

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Dec. 12 to Mar. 1, Mar. 7-9, 12-16, 21, 23, 26, 

29 (no gage-height record Jan. 22 to Feb. 28; discharge computed on basis of weather records and 

records for nearby stations).
GREEN RIVER BASIN 275

Uinta River above Clover Creek, near Neola, Utah

Location.--Water-stage recorder, lat. 40°38', long. 110°10', in NW^ sec. 30, Ti 3 N., R. 

w. Uinta meridian, 2 miles upstream from Clover Creek and 15 miles northwest of Neola.

Drainage area.--132 square miles.

Records available.--October 1945 to September 1950.

Extremes.--Maximum discharge during year, 1,310 second-feet June 1 (gage height, 3.57 

reet); minimum, 30 second-feet Mar. 29.

1945-50: Maximum discharge, 2,300 second-feet June 18, 1949 (gage height, 5.10 

feet); minimum recorded, 24 second-feet Mar. 17, 1946, Mar. 9, 1949.

Remarks.--Records excellent. Flow partly regulated by several small mountain lakes and 

reservoirs Including Fox Lake, Crescent Lake, Atwood Lake, and Chain Lake; total capacity, about 3,600 acre-feet. No diversion above station.

Discharge, in second-feet, water year October 1949 to September 195O ,

Day

1 

2 

3 

4 

5

6 

7 

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.

97 

89 

87 

84 

82

81 

84 

89 

92

89

90 

92 

99 

94 

90

86 

87 

101 

97 

97

101 

96 

94 

90 

90

90 

89 

87 

*87 

84 

82

Nov.

84 

82 

82 

82

81

81 

78 

80 

80

81

80 

80 

80 

80 

78

78 

76 

76 

75 

75

72 

69 

71 

71 

69

69 

69 

68 

66 

64

Dec.

64 

64 

62 

60 

60

60 

63 

62 

63 

63

60 

54 

62 

60 

63

62 

60 

G?. 

62 

60

58 

56 

57 

57 

56

56 

56 

55 

55 

54 

54

Jan.

54 

54 

51 

51 

51

51 

51 

51 

51 

50

50 

49 

49 

49 

49

50 

50 

49 

49 

49

49 

48 

49 

48 

45

46 

50 

50 

48 

47 

46

Feb.

47 

47 

48 

48 

48

47 

47 

44 

46 

45

45 

44 

44 

44 

44

44 

44 

43 

44 

44

43 

42 

43 

43 

43

44 

44 

43

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

42 

43 

43 

44 

44

44 

44 

44 

44 

43

42 

41 

41 

41 

41

41 

41 

41 

42 

41

41 

41 

41 

40 

42

41 

41 

40 

39 

40 

42

Apr.

46 

50 

51 

45 

45

49 

55 

60 

57 

57

51 

55 

64 

68 

60

62 

72 

80 

76 

82

112 

139 

158 

152 

133

125 

131 

133 

119 

106

Secondfoot-days

2,797 

2,277 

1,840

64,674

1,534 

1,252 

1,295 

2,493 

10,479 

17,360 

8,257 

5,035 

3,070

57,689

May

101 

101 

102 

97 

92

89 

84 

80 

81 

78

81 

87 

104 

129 

167

215 

263 

308 

330 

361

448 

590 

693 

761 

787

584 

573 

658 

623 

802 

1,010

Maximum

101 

84 

64

1,660

54 

48 

44 

158 

1,010 

1,050 

390 

192 

156

1,050

June

1,050 

965 

634 

531 

629

860 

800 

526 

472 

558

658 

681 

618 

612 

595

595 

568 

542 

516 

506

531 

542 

511 

491 

425

378 

382 

382 

399 

403

July

382 

361 

357 

338 

319

330 

365 

390 

357 

322

311 

297 

294 

266 

250

235 

230 

235 

224 

235

215 

202 

197 

194 

187

184 

194 

202 

205 

182 

197

Minimum

81 

64 

54

32

45 

42 

39 

45

78 

378 

182 

127 

80

39

Aug.

192

187 

184 

182 

179

175 

170 

172 

165 

179

189 

187 

184 

182 

177

172 

167 

163 

161

154

154 

147 

141 

137 

135

133 

131 

127 

129 

139 

141

Mean

90.2 

75.9 

59.4

177

49.5 

44.7 

41.8 

83.1 

338 

579 

266 

162 

102

158

Sept.

156 

156 

141 

123 

115

110 

108 

108 

108 

104

106 

102 

96 

94 

90

90 

92 

90 

90

99 

99 

96 

96 

90

87 

84 

82 

81 

80

Runoff in 

acre-feet

5,550 

4,520 

3,650

128,300

3,040 

2,480 

2,570 

4,940 

20,780 

34,430 

16,380 

9,990 

6,090

114,400

Peak discharge (base, 60O sec.-ft.). June 1 (9 p.m.) 1,310 sec.-ft.
276 GREEN RIVER BASIN

Uinta River near Neola, Utah

Location.--Water-stage recorder, lat. 40°32 I 10", long. 110°03'40", in SE^SWi sec. 25, T. 

2 N., R. 2 W. Uinta meridian, 800 feet downstream from bridge, three-quarters of a mile 

upstream from Pole Creek, and 7 miles north of Neola.

Drainage area.--181 square miles.

Records 1950. available.--July 1921 to September 1927 (fragmentary), September 1929 to September 

Average discharge.--22 years (1925-26, 1929-50), 174 second-/eet.

Extremes.--Maximum discharge during year, 1,210 second-feet May 31 [gage height, 4.96 feet); 

minimum, 41 second-feet Mar. 29.

1929-50: Maximum discharge, 3,320 second-feet June 26, 1944 (gage height, 5.20 feet), 

from rating curve extended above 1,600 second-feet; minimum discharge recorded, 32 

second-feet Mar. 10, 1941, 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 fair. Water diverted from Pole Creek and Uinta River and used at Uinta Power 

& Light Co.'s power plant, enters river about 1,000 feet above station. Uinta power 

canal diverts from river 6 miles above station. Enlargement of canal completed in August 1944. Plow 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.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

124 

111 

113 

111 

111

109 

111 

119 

121 

119

105 

115 

117 

113 

109

105 

103 

119 

130 

119

121 

117 

117 

115 

113

113 

113 

111 

121 

132 

130

Nov.

117 

103 

103 

105 

103

101 

101 

103 

103 

109

107 

103 

105 

105 

103

103 

101 

103 

101 

99

97 

97 

97 

95 

95

93 

93 

93 

93 

91

Dec.

89 

89 

91 

86 

88

*89 

91 

91 

91 

95

90 

80 

75 

80 

90

93 

84 

82 

75 

66

64 

64

64 

66 

64 

66

Jan.

64 

63

(*)

64

Feb.

62

*63

63 

63 

63 

63 

63

63 

64 

63 

63 

63

64 

64 

64

Month

Octo 

Move 

Dece

Ca

janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

63 

63 

63 

64 

66

66 

64 

78 

66 

68

68

66 

75 

70 

66

66 

70 

71 

66 

68

68 

70 

71 

68

66

64

63 

63 

63 

64 

68

Apr.

75 

84 

86 

75 

75

82 

89 

101 

97 

86

86 

89 

99 

107 

99

99 

113 

130 

126 

126

163 

195 

232 

229 

192

176 

181 

186 

166 

151

Secondfoot-days

3,587 

3,022 

2,423

79,833

1,983 

1,754 

2,075 

3,795 

12,367 

19,372 

9,907 

5,319 

3,795

69,399

May

144 

141 

144 

139 

128

119 

117 

113 

115 

109

109 

111 

119 

139 

181

241 

324 

394 

425 

450

531 

680 

803 

853 

930

694 

665 

783 

733 

863 

1,070

Maximum

132 

117 

95

1,820

64 

78 

232 

1,070 

1,070 

454 

232 

161

1,070

June

1,070 

1,010 

743 

637 

723

914 

914 

660 

571 

622

709 

738 

665 

651 

646

651 

632 

608 

581 

567

590 

604 

571 

558 

500

446 

446 

141 

446 

458

July

450 

421 

417 

406

386

386 

429 

454 

441 

390

386 

356 

360 

327 

306

282 

273 

282 

266 

282

260 

244 

238 

235 

229

220 

226 

244 

250 

226 

235

Minimum

103 

91 

64

52

63 

75 

109 

441 

220 

126 

107

-

Aug.

232 

226 

223 

217 

214

206 

203 

203 

192 

200

209 

200 

195 

189 

179

171 

163 

156 

151 

144

139 

137 

132 

128 

126

126 

126 

128 

128 

137 

139

Mean

116 

101 

78.2

219

64.0 

62.6 

66.9 

126 

399 

646 

320 

172 

126

190

Sept.

151 

161 

151 

141 

135

132 

130 

128 

132 

132

132 

130 

124 

119 

113

117 

119 

119 

121 

128

126 

128 

128 

126 

119

115 

113 

109 

109 

107

Runoff In 

acre-feet

7,110 

5,990 

4,810

158,400

3,930 

3,480 

4,120 

7,530 

24,530 

38,420 

19,650 

10,550 

7,530

137,600

Peak discharge (base. 700 sec.-ft.,). May 31 (10 

* Winter discharge measurement made on this day.

p.m.) l,21o sec.-ft.

Note. Stage-discharge relation affected by Ice Dec. 11-15, 22-27, Jan. 3 to Feb. 14 (no gageheight record Jan. 7-10, Jan. 28 to Feb. 14 ; discharge computed on basis of 1 discharge measurement, 

weather records, and records for other Uinta River stations).
GREEN RIVER BASIN 277

Uinta River at Port Duchesne, Utah

Location.--Water-stage recorder, lat. 40°18 I , long. 109°51', In NWi sec. 23, T. 2 S., R. 

1 &. Ulnta meridian, a quarter of a mile downstream from bridge on U. S. Highway 40, 

half a mile north of Fort Duchesne, and 7 miles east of Roosevelt.

Drainage area.--672 square miles.

Records available.--October 1942 to September 1950, September 1899 to December 1904, April 

to June 1906, and April 1907 to November 1910 (fragmentary) at site half a mile downstream. May 1917 to September 1920 (fragmentary) at site below small diversion 2 miles 

downstream (published as Uinta River near Fort Duchesne),

Average discharge.--13 years (1899-1902, 1908-10, 1942-50), 151 second-feet.

Extremes.--Maximum discharge during year, 1,660 second-feet June 1 (gage height, 3.85 

reet); minimum, 1.8 second-feet July 18.

1899-1904, 1906-10, 1917-20, 1942-50: Maximum discharge, more than 7,500 secondfeet in June 1917; no flow at times.

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 918; 1900, 1903, 1909, 1917, 1918.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

IS 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

8.2 

7.1 

7.4 

7.1 

6.8

6.8 

7.4 

11 

14 

9.4

9.8 

9.0 

7.4 

6.O 

4.5

4.0 

3.5 

3.0 

13 

22

13 

6.4 

5.0 

4.2 

2.8

2.5 

2.4 

2.2 

2.2 

Z.2 

Z.2

Nov.

2.2 

2.2 

Z.4 

2.4 

2.2

2.2 

2.2 

3.2 

15 

18

31 

41 

44 

48 

51

50 50 ' 

50 

51 

51

50 

59 

60 

63 

62

63 

63 

64 

63 

77

Dec.

77 

69 

51 

47 

47

54 

55 

*54 

55 

63

62 

51 

41 

36 

59

64 

b9O 

bl!5 

b!30 

b!30

1 bl20 

120

Jan.

(*) 

. 1ZO

Feb.

. *110

Month

OCtO

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

115 

120 

125 

135 

140

b!40 

bl40 

145 

*151 

162

148 

125 

118 

127 

132

125 

132 

135 

115 

109

101 

95 

87 

92 

107

113 

91 

72 

64 

56 

56

Apr.

57 

62 

64 

52 

44

37 

37 

40 

56

51

46 

41 

33 

36 

30

26 

20 

18 

16 

16

18 

29 

47 

69 

52

38

28 

17 

17 

14

Secondfoot-days

212.5 

1,143.0 

2,670

44,522.8

3,720 

3,080 

3,573 

1,111 

6,879.4 

10,735.1 

164.2 

203.2 

157.4

33,648.8

May

14 

14 

12 

21 

28

15 

18 

15 

12 

9.4

7.1 

6.4 

5.4 

4.8 

4.5

9.8 

9.0 

33 

69 

113

174 

342 

433 

666 

790

6O4 

377 

536 

604 

693 

1,240

Maximum

22 

77 

130

2,850

162 

69 

1,240 

1,460 

15 

11 

15

1,460

June

1,460 

1,400 

81O 

442 

395

716 

942 

565 

318 

261

389 

515 

469 

421 

329

242 

202 

165 

148 

125

97 

82 

72 

56 

51

29 

12 

8.2 

7.1 

6.8

July

Minimum

2.2 

2.2 

36

1.0

56 

14 

4.5 

6.8 

1.9 

2.8 

2.2

1.9

6.4 

6.0 

5.7 

4.8 

4.0

3.2 

3.2 

1O 

15 

9.0

13 

11 

5.7 

4.0 

2.8

2.4 

2:0 

1.9 

2.8 

4.0

7.1 

4.8 

3.5 

2.2 

2.5

3.2 

3.0 

3.5 

7.8 

5.7 

4.0

Aug.

3.5 

2.8 

2.8 

8.4 

11

11 

9.8 

9.4 

9.0 

9.0

9.2 

9.4 

9.0 

8.6 

8.0

7.6 

7.2 

6.7 

6.3 

6.0

5.7 

5.4 

5.1 

4.3 < 

4.5

4.3 

4.0 

3.8 

3.6 

3.6 

3.7

Mean

6.85 

38.1 

86.1

122

120 

110 

115 

37.0 

222 

358 

5.30 

6.55 

5.25

92.2

Sept.

3.9 

4.0 

3.8 

3.6 

3.3

3.0 

2.8 

2.6 

2.4 

2.3

2.2 

2.2 

2.2 

2.2 

2.4

2.5 

2.4 

2.8 

2.8 

3.5

8.5 

11 

15

13 

12

13 

13 

6.0 

6.0 

3.0

Runoff In 

acre -feet

421 

2,270 

5,300

88,32O

7,380 

6,110 

7,090 

2,200 

13,650 

21,290 

326 

403 

312

66,750

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. Ho gage-height record Dec. 25 to Mar. 5, Aug. 11 to Sept. 12; discharge computed on basis of 

2 discharge measurements, weather records, and records for nearby stations.
278 GREEN RIVER BASIN

Farm Creek near Whiterocks, Utah

Location.--Water-stage recorder, lat. 40°34', long. 109°58', in SE£ sec. 14, T. 2 N., R.

1 w. Uinta meridian, 0.7 mile upstream from Hominy Creek and 7 miles northwest of

Whiterocks.

Records available. July 1949 to September 1950. 

Extremes.--Maximum discharge during period July 1949 to September 1950, 154 second-feet

May 24, (gage height, 2.83 feet), from rating curve extended above 85 second-feet; mln

imum, 1.8 second-feet Feb. 12. 

Remarks. Records good.

Discharge, in second-feet, 1949-50 

1949

Day

1

2

3

4

5

6

7

8

July

_

_

_

_

_

-

Aug.

3.8

3.8

3.8

3.6

3.6

3.6

3.6

3.8

Sept.

3.6

3.6

3.6

3.4

3.4

3.6

3.4

3.4

Day

9

10

11

12

13

14

15

16

July

.7

.7

.4

.1

.1

6.4

5.8

Aug.

3.6

3.6

3.6

3.4

3.4

3.4

3.4

3.4

Sept.

3.6

3.8

3.8

3.8

3.8

3.6

3.6

3.8

Day

17

18

19

20

21

22

23

24

July

6.1

6.1

5.4

5.4

5.1

4.9

4.7

4.7

Aug.

3.4

3.4

3.4

3.4

3.4

3.4

3.6

3.6

Sept.

3.8

3.8

3.8

3.8

3.8

3.8

3.4

3.6

Day

25

26

27

28

29

30

31

July

.5

.3

.3

.0

.0

.0

3.8

Aug.

3.6

3.4

3.4

3.6

3.6

3.4

3.4

Sept.

3.6

3.6

3.6

3.8

4.0

4.0

-

Day

1

2

3

4

5

6

7

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.

3.8

3.8

3.6

3.6

3.6

3.6

3.8

3.8

3.8

3.8

3.6

3.8

3.8

3.8

3.8

3.8

3.8

.0

.3

.3

.0

.0

.0

.0

.0

.0

.0

.8

.8

.8

.8

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

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.4

-

Dec.

3.4

3.4

3.4

3.4

3.4

3.4

3.4

*3.6

3.6

3.6

3.6

3.4

3.4

3.4

3.4

3.4

3.6

3.6

3.6

3.6

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

Jan.

3.4

3.4

3.4

3.2

b3.2

3.2

3.2

3.2

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

3.6

3.4

b3.4

b3.2

3.2

3.2

3.2

3.2

3.4

Feb.

3.2

b3.2

3.2

3.2

3.2

3.2

*3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.2

3.2

3.2

3.2

3.2

3.4

_

_

-

Mar.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

3.

Apr.

' 3.6

3.8

3.8

3.6

3.6

3.8

4.0

4.3

4.3

4.0

4.0

4.0

4.3

4.5

5.8

6.4

7.4

9.4

11

12

16

25

40

44

38

36

37

35

30

25

May

24

23

23

22

19

18

16

15

14

13

13

13

15

18

28

48

69

78

78

86

99

99

91

97

78

64

75

72

63

76

75

June

64

50

36

30

31

32

30

23

19

16

15

15

13

12

12

11

10

9.8

9.4

9.4

9.4

8.9

6.4

8.9

8.9

8.1

8.1

8.1

7.7

8.1

July

7.7

7.7

7.4

7.7

7.4

7.4

7.4

8.1

7.7

7.4

7.7

7.1

6.8

6.1

6.1

5.8

5.8

5.8

5.4

5.4

5.1

5.1

4.9

4.9

4.9

4.9

4.9

4.9

4.9

4.7

4.7

Aug.

4.7

4.5

4.5

4.5

4.5

4.3

4.3

4.0

4.0

4.0

4.0

4.0

4.0

3.8

4.0

4.0

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3-. 6

3.6

3.6

3.4

Sept.

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

4.1

4.7

4.7

4.7

4.2

3.6

3.4

3.6

3.6

3.8

4.0

4.0

3.8

3.8

3.8

4.0

4.0

3.8

3.8

3.8

4.0

4.0

Peak discharge (base, 1UU see -ft.).--May 24 (8:30 p.m.) 154 sec.- 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Monthly discharge, in second-feet, 1949-50

Month

September. ..................................

Water year .......................

Calendar year .......................

May. ........................................

July

September. ..................................

Water year 1949-50 .......................

Seoondfoot-days

110.2

-

107.0

-

1 522

532 2

114.4

3,548.7

Maximum

4.0

-

4 3

|_ 3.6

-

8.1

4.7

99

Minimum

3.4

-

3.6

3.4

-

3.4

7.7

4.7

3.4

3.4

3.0

Mean

3.67

-

3.85

I 3.45

-

17.7

6.19

3.81

9.72

Runoff in 

aore-feet

239

217

219

675

237

219 L 212

-

205

175

209

860

3,020

1,060

380

240

227

7,040
GREEN RIVER BASIN 279

Whiterocks River above Paradise Creek, near Whiterocks, Utah

Location. Water-stage recorder, lat. 40°38i, long. 109°58', in SWtr sec. 23, T. 3 N., R-. 

I w. Ulnta meridian, 2f miles upstream from Paradise Creek and 12 miles nortwest of 

Whiterocks.

Records available.--October 1945 to September 1950.

Extremes.--Maximum discharge during year, 1,250 second-feet May 31 (gage height, 4.20 feet), 

rrom rating curve extended above 820 second-feet; minimum not determined, occurred during period of no gage-height record.

1945-50: Maximum discharge, 1,780 second-feet June 18, 1949 (gage height, 4.42 feet), 

from rating curve extended above 820 second-feet; minimum not determined, probably occurred during period of no gage-height record.

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

wnich are fair. No diversions above station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

57 

53 

50 

48 

47

46 

49 

57 

60 

57

57 

57 

63 

64 

62

59 

58 

f70 

71 

85

72 

f63 

f62 

f60 

58

57 

56 

53

524'J 

48

Nov.

49 

48 

48 

48 

49

49 

48 

48 

48 

50

52

54 

50 

48 

48

47 

*46 

46

45 

45

45 

45 

44 

41 

43

42 

41 

41 

40 

39

Dec.

39

b39 

39 

b37 

b38

b38 

38 

38 

36

b35 

35

Jan.

30

Feb.

30 

25

Month

Octo 

Nove 

Deoe

Ca

Janui 

Febn 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

*:::::::::::::::::::::::::::>::::::::::

ter year 1949-50 ...............

Mar. Apr.

25

> 30 

V 35

40

43 

46

50 

*58

81 

104 

121 

118

:oi

101 

109 

109 

96 

88

Secondfoot-days

1,800 

1,387 

1,112

45,003

930 

775 

775 

1,790 

9,390 

13,080 

 5,130 

2,942 

1,566

40,677

May

82 

80 

80 

77 

72

67 

64 

62 

59 

58

58 

6O 

70 

94 

127

169 

227 

289 

325 

353

444 

567 

645 

715 

676

46O 

466 

587 

594 

807 

956

Maximum

85 

54 

39

1,240

121 

956 

926 

240 

132 

66

956

June

926 

723 

449 

389 

568

764 

668 

444 

398 

460

554 

547 

490 

472 

455

449 

407 

384 

353 

341

341 

333 

321 

325 

289

a260 

a250 

a240 

a240 

a240

July

a240 

a240 

a240 

a23O

a210

a21O 

a210 

a220 

a21O 

a 200

186

175 

171 

162 

152

142 

144 

162 

152 

167

140 

125 

127 

127 

118

109 

120 

121 

118 

106 

96

Minimum

46 

39

-

58 

240 

96 

65 

44

-

Aug.

91 

93 

132 

129 

125

121 

118 

118 

114 

111

113 

116 

114 

113 

106

102 

99 

91 

80 

75

75 

75 

75 

72 

72

72 

71 

70 

68 

66 

65

Mean

58.1 

46.2 

35.9

123

30.0 

27.7 

25 

59.7 

303 

436 

165 

94.9 

52.2

111

Sept.

62 

60 

49 

47 

45

45 

44 

45 

51 

49

52

51 

46 

46 

48

46 

a51 

56 

57 

62

65 

66 

64 

62 

55

52 

49 

47 

48 

46

Runoff in 

acre -feet

3,570 

2,750 

2,210

89,080

1,840 

1,540 

1,540 

3,550 

18,620 

25,940 

10,180 

5,840 

3,110

80,690

Peak discharge (base, 500 see.-ft.). May 31 (8 p.m.) 1,250 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records, records for nearby streams, 

or interpolated.

ID Stage-discharge relation affected by ice.

f Discharge computed from partly estimated gage-height record.

Hpte. No gage-height record, Dec. 17 to Apr. 19 (stage-discharge relation affected by ice during 

most of period); discharge computed on basis of weather records and records for nearby streams.

207364 O - 52 - 19
280 GREEN RIVER BASIN

Whiterocks River near Whlterocks, Utah

Location. Water-stage recorder, lat. 40°34', long. 109°56', in Sw£ sec. 18, T. 2 N., R. 

1 E. Uinta meridian, three-quarters of a mile upstream from heading of United States 

Whiterocks Canal and 6j miles north of Whiterocks. Prior to Nov. 7, 1949, at site 100 

feet downstream at different datum.

Drainage areaj 115 square miles.

Records available.--August 1921 to September 1928, February 1930 to September 1950. Sep- 

-tember 1899 to August 1904, and April 1907 to November 1910 near present site. 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).

Average discharge.--26 years (1899-1903, 1908-10, 1930-50), 121 second-feet.

Extremes. Maximum discharge during year, 1,330 second-feet June 1 (gage height, 3.82 feet); 

minimum, 27 second-feet Mar. 1, 13.

1921-28, 1930-50: Maximum discharge, 2,750 second-feet June 21, 1922, from rating 

curve extended above 1,700 second-feet; minimum, 10 second-feet Dec. 5, 1933, but may 

have been less during periods of ice effect.

Remarks. Records good except those for periods of ice effect, which are fair, 

slightly regulated by small mountain lakes. One diversion above station.

Flow

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

61 

56 

52 

50 

49

49 

51 

60 

64 

60

56 

60 

67 

68 

70

68 

65 

76 

85 

89

82 

76 

71 

68 

70

67 

67 

63 

63 

58 

57

Nov.

57 

57 

58 

57 

57

57 

57 

57 

55 

57

55 

56 

55 

53

53

52

52 

49 

49 

49

47 

48 

48 

47 

46

48 

48 

48 

45 

45

Dec.

42 

43

44 

40 

44

44 

44 

*43 

43 

43

42 

41 

46 

45 

46

46 

45 

46 

46 

45

43 

42 

43 

43 

43

42 

42 

42 

41 

40 

40

Jan.

39

39 

39

37 

(*)

37

37

37 

36 

37 

36

36

Feb.

36

36 

36 

36 

36

35 

34 

36 

35 

34

35 

*33 

33 

33 

33

33

35 

35 

33 

33

34 

35 

35

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

35 

34 

35 

35 

36

36 

35 

35

37 

36

35 

35 

35 

*39 

35

36 

35 

36 

35 

35

35

35 

36 

35 

36

35 

37 

35 

36 

35 

35

Apr.

36 

42 

44 

39 

39

43 

48 

56 

50 

44

44 

45 

52 

56 

53

54 

62 

67 

66 

70

95 

121 

150 

152 

130

126 

133 

138 

124 

113

Secondfoot-days

1,998 

1,562 

1,339

48,945

1,158 

974 

1,100 

2,292 

10,505 

14,102 

5,878 

3,736 

2,350

46,994

May

106 

106 

106 

104 

95

89 

89 

84 

80 

75

73 

75 

84 

113 

150

204 

278 

356 

380 

408

476 

608 

718 

726 

724

515 

520 

628 

640 

835 

1,060

Maximum

89 

58 

46

1,390

39 

152 

1,060 

1,010 

253 

145 

103

1,060

June

1,010 

844 

555 

452 

602

790 

766 

524 

452 

470

586 

597 

540 

514 

480

448 

426 

392 

363 

352

348 

344 

326 

322 

315

278 

265 

247 

247 

247

July

Minimum

49 

45 

40

23

33 

34 

36 

73 

247 

148 

98 

53

33

250 

253 

250 

244 

224

216 

235 

247 

233 

221

216 

195 

182 

175 

163

154 

152 

170 

165 

177

163 

163 

159 

161 

156

150 

159 

175 

168 

154 

148

Aug.

143 

137 

145 

145 

141

137 

133 

131 

131 

127

133 

137 

135 

129 

127

123 

119 

116 

107 

107

105 

105 

105 

100 

98

100 

100 

100 

108 

107 

105

Mean

64.5 

52.1 

43.2

134

37.4 

34.8 

35.5 

76.4 

339 

470 

190 

121 

78.3

129

Sept.

103

100 

92 

86 

87

87 

87 

89 

101 

100

93 

80 

73 

70 

- 70

69 

70 

69 

72 

77

79 

83 

80 

74 

69

65 

61 

56 

55 

53

Runoff in 

acre-feet

3,960 

3,100 

2,660

97,080

2,300 

1,930 

2,180 

4,550 

20,840 

27,970 

11,660 

7,410 

4,660

93,220

Peak discharge (base, 600 sec.-ft.). June 1 (9 p.m.) 1,330 sec.-ft. 

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 11-24, 26-28, Jan. 1-8, 12-19, Jan. 25 to 

Feb. 6, Feb. 8-10, Mar. 8, 13.
GREEN RIVER BASIN 281

Paradise Creek near Whiterocks, Utah

Location.--Water-stage recorder, lat. 40°37', long. 109°56", in NE£ sec. 36, T. 3 N., R. 

nmiintameridian, 1,000 feet upstream from mouth and 10 miles north of Whiterocks.

Drainage area.--About 10 square miles.

Records available.--April 1946 to September 1950.

Extremes.--Maximum discharge during year, 99 second-feet May 30 (gage height, 2.41 feet); 

minimum not determined, probably occurred during period of ice effect.

1946-50: Maximum discharge, 112 second-feet May 16, 1948; maximum gage'height, 2.56 

feet May 8, 1947;. no flow Aug. 17-20, 1946.

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

which are fair. Flow regulated by Paradise Park Reservoir, capacity, 3,100 acre-feet.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

2.1 

2.1 

2.0 

1.0 

.9

.9 

.9 

1.0 

1.0 

1.0

.9 

.9 

1.0 

.9 

.9

.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.8 

.8

Nov.

0.8 

.8 

.8 

.8 

.8

.7 

.7

b! 

b.

».

'.1 

.7 

.7

.7 

.7 

.7 

.7 

.7

Dec.

0.7 

b.7 

-i.7 

b.7 

.7

.7 

.7 

.7 

.7

.7

Jan.

« 

, 0.6

Feb.

. 0.6

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

1.......................... .............

ter year 1949-50 ...............

Mar.

0.6

Apr.

) 

1-

1 1.0 

1.0

1.5 

2.0 

2.5 

3.2 

*4.0

7.6 

11 

14 

15 

13

13 

14 

14 

12 

9.9

Secondfoot -days

30.4 

21.5 

21.7

2,248.2

18.6 

16.8 

18.6 

148.9 

1,067.6, 

920 

554.3 

517.2 

400.0

3,735.6

May

9.5 

9.2 

9.2 

8.8 

8.2

7.9 

7.6 

6.9 

6.6 

6.0

6.0 

6.9 

8.8 

15 

19

29 

42 

54 

53 

55

67 

72 

72 

73 

61

54 

58 

57 

54 

66 

65

Maximum

2.1 

.8

44

15 

73 

58 

41 

37 

34

73

June

58 

50 

35 

30 

34

35 

52 

50 

46 

47

46 

45 

41

37 

33

30 

28 

25 

23 

22

20 

19 

18 

16 

16

15 

13 

12 

12 

12

Minimum

July

0.8

.7

-

6.0 

12 

6.6 

9.2 

1.3

-

11 

11 

13 

14 

12

12 

13 

14 

13 

11

10 

9.2 

8.8 

8.2 

7.6

6.9 

6.6 

7.2 

6.9 

8.9

20 

28 

29 

29 

29

29 

31 

41 

40 

37 

37

Aug.

37 

32 

35 

11 

10

10 

10 

9.9 

9.9 

9.9

9.9 

9.5 

9.5 

9.5 

9.5

9.2 

9.2 

9.2 

16 

18

18 

18 

18 

18 

17

17 

18 

19 

30 

30 

30

Mean

0.98 

.72 

.7

6.16

.6 

.6 

.6 

4.96 

34.4 

30.7 

17.9 

16.7 

13.3

10.2

Sept.

30 

30 

29 

31 

34

34 

34 

32 

32

31

20 

6.9 

6.6 

6.2 

6.2

6.2 

6.2 

5.0 

1.9 

2.0

1.7 

1.9 

2.0 

1.7 

1.6

1.5 

1.4 

1.4 

1.3 

1.3

Runoff In 

acre-feet

60

43 

43

4,460

37 

33 

37 

295 

2,120 

1,820 

1,100 

1,030 

793

7,410 1

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note.--Ho gage-height record Dec. 10 to Apr. 18 (stage-discharge relation affected by Ice most of 

period); discharge computed on basis of weather records and records for nearby streams.
282 GREEN RIVER BASIN

Deep Creek near Lapoint, Utah

Location. Water-stage recorder, lat. 40°20", long. 109°51" , in SE^ sec. 2, T. 2 S., R. 1

ETTTTnta meridian, three-quarters of a mile upstream from mouth and 5 miles southwest

of Lapoint. 

Records available.--July 1949 to September 1950; July 1942 to September 1945 at site about

a miles upstream. 

Extremes. Maximum discharge during period July 1949 to September 1950, 31 second-feet

Nov. 11 (gage height, 2.64 feet); no flow Apr. 17.

1942-45, 1949-50: Maximum discharge, 200 second-feet Aug. 29, 1943 (gage height,

8.2 feet, from floodmarks, site and datum then in use), from rating curve extended

above 14 second-feet on basis of discharge graph determined from records for Uinta

River at Fort Duchesne; minimum, no flow Apr. 17, 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.

Discharge, In second-feet, 1949-50 

1949

Day

1

2

3

4

5

6

7

8

July

-

-

-

-

-

-

-

-

Aug.

2.5

2.4

2.3

2.2

2.2

2.2

2.2

2.2

Sept.

2.1

1.9

1.9

1.9

1.9

1.8

1.8

1.8

Day

9

10

11

12

13

14

15

16

July

_

.

-

2.6

2.6

2.2

2.3

2.2

Aug.

2.2

2.2

2.1

2.0

2.1

2.0

2.0

2.0

Sept.

1.8

1.8

1.9

1.9

1.9

1.9

1.8

1.8

Day

17

18

19

20

21

22

23

24

July

2.9

4.6

2.9

3.7

3.4

2.8

2.5

3.1

Aug.

2.0

2.0

1.9

1.9

1.9

2.0

2.1

2.0

Sept.

1.9

2.2

2.0

1.8

1.9

2.0

2.2

2.3

Day

25

26

27

28

29

30

31

July

2.9

2.9

2.8

2.4

a. 2

2.4

2.3

Aug.

2.0

1.9

1.8

1.9

1.8

1.9

2.0

Sept.

2.1

2.0

2.0

2.2

2.2

2.2

Day

1

2

3

4

5

6

7

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.

2.0

2.0

2.0

2.0

2.1

2.1

2.1

2.2

2.2

2.2

2.1

2.0

2.0

2.0

1.9

1.9

1.9 

1.9 

7.0 

5.4

4.2

1.8

1.8

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

Nov.

1.6

1.6

1.6

1.6

1.6

1.6

1.6

6.9

18

21

24

18

19

20

16

15

10 

9.8 

9.8 

9.8

10

10

10

'10

10

10

10

9.8

9.6

10

-

Dec.

10

9.8

9.8

9.6

9.3

10

10

*1O

1111

10

8.9

b9.0

b9.0

9.0

. 9.5

Jan.

(*)

9

Feb.

1 .

I

10

(">

> blO

. bll

-

-

-

Mar.

b!2

bl2

b!3

b!4

blS

bl7

b!9

20

*21

26

23

18

13

16

20

18

20 

21 

17 

16

15

18

15

14

15

15

13

13

12

13

13

Apr.

15

17

18

13

13

13

15

13

9.9

3.3

2,9

2.4

2.1

1.8

1.9

1.8

1.7 

1.8 

1.7 

1.7

1.7

1.8

1.8

1.8

1.7

1.7

1.6

2.2

4.7

4.7

-

May

4.7

5.4

4.1

5.9

6.1

4.0

5.9

4.6

4.0

3.4

1.8

1.6

1.5

1.5

1.5

1.5

1.5 

2.5 

3.7 

4.0

8.7

20

21

20

21

17

1.8

3.8

5.6

3.1

2.0

June

1.7

1.6

1.7

1.9

2.2

3.0

3.7

2.9

2.2

2.8

3.3

3.6

15

14

9.3

10

9.8 

10 

10 

11

15

8.0

3.6

3.1

3.2

3.4

2.8

2.7

2.6

2.7

July

3.1

3.2

3.1

3.1

2.9

2.9

3.1

3.4

2.9

2.8

6.8

5.4

3.4

2.3

2.2

2.2

2.2 

2.2 

2.3 

2.3

2.3

2.2

2.3

2.2

2.4

2.3

2.5

2.9

3.4

3.3

3.3

Aug.

3.4

3.4

4.0

8.7

11

11

11

10

10

10

11

11

11

8.7

8.0

6.8

6.3 

6.5 

6.1 

6.3

'5.4

4.6

2.8

1.9

2.1

2.6

3.4

3.8

4.4

5.2

5.9

Sept.

5.2

4.6

4.6

4.4

4.1

4.1

4.1

4.3

4.7

5.4

5.9

4.4

2.3

2.2

2.2

2.2

2.3 

2.3 

2.5 

2.4

2.3

2.4

2.4

2.3

2.4

2.4

2.5

2.5

2.5

2.7

Winter dischargei measurement^made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 15 to Feb. 16; discharge computed on basis of 2 discharg 

measurements, weather records, and records for nearby stations.

Monthly discharge, In second-feet, 1949-50

Month

July 12-31 , 1949 ............................

September ...................................

Calendar year .......................

March *

Mav

September. ........................'..........

Water year 1949-50 .......................

Secondfoot-days

55.7~l

58.9

.

*

-

193 2

98.6

2,674.4

Maximum

4.6 

2.5

2.3

_

-

5.9

26

Minimum

2.2 

1.8

1.8

_

-

2.2

-

Mean

2.78 

2.06

1.96

_

2

0C:

-

3.29

7.33

Runoff In 

acre-feet

110 

127

117

354

592

.

196

5,310
GREEN RIVER BASIN 283

White River near Meeker, Colo.

Location. Water-stage recorder, lat. 40°02', long. 107°52', in sec. 30, T. IN., R. 93 W., 

I miJ.e upstream from Curtis Creek and 3| miles east of Meeker.

Drainage area. 762 square miles.

Records available.--May 1901 to October 1906, May 1910 to November 1913 (at site 2j miles 

downstream), and October 1933 to September 1950 in reports of Geological Survey. May 

1901 to October 1906 and May 1910 to September 1950 in reports of State engineer.

Average discharge.--45 years (1901-6, 1910-50), 637 second-feet.

Extremes.--Maximum discharge during-year, 3,460 second-feet June 14 (gage height, 3.82 

1'eet); minimum daily, 285 second-feet Sept. 4-6.

1901-6, 1910-50: Maximum daily discharge, 6,070 second-feet June 16, 1921; minimum 

daily, 112 second-feet July 17, 1934. ,

Remarks.--Records excellent except those for periods of ice effect or no gage-height recora, which are fair. Diversions above station for irrigation.

Revisions. W 764: Drainage area.

Rating table, water year 1949-50, except periods of Ice effect

(gage height, in feet, and discharge, in second-feet)

(Shifting-control method used June 8, 9, Sept. 3-30)

1.1 282 2.4 1,120 

1.3 350 3.0 1,800 

1.6 500 3.4 2,490 

2.0 770 3.8 3,410

Discharge, in second-feet, water year October 1949 to September 1950

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 

38 

29 

30 

31

Oct.

420 

410 

400 

386 

382

395 

395 

395 

440 

435

415 

435 

445 

445 

425

420 

415 

415 

415 

410

405 

386 

400 

400 

395

390 

382 

377 

390 

400 

372

Nov.

390 

386 

382 

382 

382

390 

386 

390 

390 

390

400 

359 

368 

390 

395

382 

377 

372 

372 

368

354 

354 

359 

386 

377

372 

372 

377 

364 

354

Dec.

359 

339 

350 

336 

332

*354 

364 

346 

359 

368

350 

314 

298 

298 

314

354 

359 

359 

359 

350

339 

332

346 

350

321

314 

328 

325 

325 

33G 

328

Jan.

364 

368 

346 

301 

308

292 

b290 

b290 

b290 

b300

3308

3310 

*b305 

b310 

325

318 

368 

386 

372 

359

346 

346 

346 

346 

332

3310 

8315 

8350 

a 340 

3330 

3325

Feb.

314 

314 

318 

321 

364

359 

359 

328 

301 

304

*343 

336 

321 

325 

328

321 

328 

318 

321 

336

336 

304 

328 

321 

325

325 

332 

336

Month

Goto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

ber.... .................................

lendar year 1949

ter year 1949-50 .......................

Mar.

304 

321 

321 

318 

325

332 

318 

304 

332 

3326

321 

318 

298 

321

321

311 

321 

336 

311 

336

308 

318 

321

321 

321

332 

321 

314 

314 

321 

328

Apr.

325 

343 

350 

336 

325

350 

377 

405 

440 

425

386 

386 

405 

420 

440

435 

456 

536 

524 

524

612 

718 

914 

786 

632

612 

586 

612 

560 

530

Secondfoot-days

12,595

11,320 

10,506

265,698

10,196 

9,166 

9,914 

14,750 

32,253 

66,815 

18,127 

10,299 

10,478

216,419

Peak discharge (base, 2,100 sec. -ft.). June 2 (3:30 a

May

512 

512 

542 

625 

586

530 

512 

489 

478 

462

489 

580

674 

842 

1,030

1,090 

1,230 

1,300 

1,220 

1,300

1,400 

1,680 

1,760 

1,860 

1,650

1,370 

1,260 

1,350 

1,380 

1,560 

1,980

Maximum

445 

400 

368

4,210

386 

364 

336 

914 

1,980 

3,310 

866 

395 

420

3,310

June

2,300 

2,510 

2,470 

2,150 

2,260

2,640 

2,980 

2,380 

1,950 

2,300

2,600 

3,050 

3,230 

3,310 

3,150

3,020 

3,000 

2,760 

2,530 

2,030

1,900 

1,790 

1,700 

1,620

1,570

1,370 

1,230 

1,100 

993 

922

July

866 

818 

818 

740 

702

660 

606 

762 

710 

681

794 

695 

660 

625 

592

554 

530 

524 

518

506

494 

467 

450 

450 

435

420 

410 

425 

410 

405 

400

Aug.

395 

368 

377 

386 

368

359 

359 

350 

343

336

339 

343 

343 

339 

336

325 

321

314 

314 

314

311 

304 

301 

295 

298

308 

325

311 

308 

308

301

Minimum Mean

372 406 

354 377 

298 339

235 728

290 329 

301 327 

298 320 

325 492 

462 1,040 

932 2,227 

400 585 

395 332 

285 349

285 593

Sept.

295 

292 

292 

285 

285

285 

301 

311 

328 

343

339 

368 

354 

354 

350

372 

359 

350 

364 

420

410 

410 

395 

390 

386

382 

372 

368 

364 

354

Runoff in 

acre-feet

24,980 

22,450 

20,840

527,0000

20,220 

18,180 

19,660 

29,260 

63,970 

132,500 

35,950 

20,430 

20,780

429,200

m.) 2,660 see. -ft.; June 7 (6 a.m.) 3.15O

sec.-ft.; June 14 (9 a.m.) 3,460 sec.-ft.

* Winter discharge measurement msde on this dsy.

a No gage-height record; discharge computed on basis of westher records snd recorded rsnge in 

stage.

b Stage-discharge relation affected by ice.
284 GREEN RIVER BASIN

White River near Watson, Utah

t

Location.--Water-stage recorder, lat. 39°58', long. 109°10', In sec. 2, T. 10 S., R. 24 E. 

bait Lake meridian, Just downstream from Evacuation Creek and 7 miles north of Watson. 

Datum of gage is 4,949.78 feet above mean sea level, datum of 1929.

Drainage area. 4,020 square miles.

Records available.--April to October 1906 (published as White River near Dragon) and October 

1933 to September 1950 in reports of Geological -Survey. April 1923 to September 1950 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.

Average discharge.--27 years (1923-50), 737 second-feet.

Extremes.--Maximum discharge during year, 3,740 second-feet Oct. 9; maximum gage height, 

4.U2 feet Feb. 27 (ice jam); minimum daily discharge, 22 second-feet Sept. 6.

1906, 1923-50: Maximum daily discharge, 8,160 second-feet July 15, 1929; minimum 

discharge, 52 second-feet July 19, 20, 1934.

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

which are fair. Diversions atsove station for irrigation.

Revisions.--W 764: Drainage area.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

587 

527 

466 

427 

400

388 

378 

378 

2,230 

826

587 

521 

488 

498 

515

498 

498 

493 

510 

545

521 

498 

488 

471 

476

471 

466 

460 

449 

454 

466

Nov.

460 

444 

454 

449 

444

449 

449 

449 

438 

444

449 

454 

449 

422 

438

449 

449 

438 

438 

432

427 

416 

405 

416 

422

449 

438 

432 

427 

422

Dec.

410 

405 

388 

383 

383

383 

*405 

410 

405 

416

416 

394 

356 

320 

320

330 

'340 

340 

335 

315

280 

280 

300 

310 

265

245 

250 

275 

285 

285 

300

Jan.

330 

330 

310 

270 

280

265 

280 

300 

315 

290

290 

295 

295 

300 

320

350 

395 

415 

425 

430

420 

400 

395 

365 

345

300 

310 

330 

330 

315 

300

Feb.

270 

230 

225 

240 

260

285 

300 

280 

255 

270

290 

*280 

270 

290 

320

350 

340 

260 

360 

340

34O 

330 

330 

360 

380

420 

400 

380

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949 . ,

St.... ..................................

ter year 1949-50 .......................

Mar.

380 

400 

440 

480 

510

490 

430 

470 

540 

540

520 

*510 

470 

510 

520

550 

560 

560 

520 

520

520 

520 

504 

476 

454

466 

466 

460 

438 

427 

416

Apr.

410 

422 

444 

*466 

466

454 

432 

432 

510 

661

587 

539 

493 

454

521

605 

611 

545 

551 

593

587 

617 

694 

721 

714

700 

674 

642 

611 

635

Secondfoot-days

16,980 

13,152 

10,529

296,711

10,295 

8,765 

15,057 

16,791 

31,835 

60,480 

19,065 

10,215 

12,082

225,246

Peak discharge (base, 2,850 sec. -ft. ) . Oct. 9 fa p.m.

May

668 

654 

617 

593 

593

a760 

721 

680 

635 

623

605 

587 

635 

648 

756

31,000 

al,100 

1,240 

1,260 

1,250

1,370 

1,400 

1,560 

1,700 

1,870

1,680 

1,420 

1,310 

1,270 

1,280 

1,350

Maximum

2,230 

460 

416

4,020

430 

420 

560 

721 

1,870 

2,730 

1,060 

356 

515

2,730

) 3,740 sec

June

1,680 

1,890 

2,130 

2,160 

2,040

1,900 

2,100 

2,500 

2,360 

2,080

2,000 

2,160 

2,500 

2,700 

2,730

2,720 

2,660 

2,700 

2,590 

2,380

2,000 

1,770 

1,700 

1,570 

1,520

1,440 

1,330 

1,190 

1,040 

940

July

877 

818 

786 

778 

721

687 

674 

770 

794

913

1,060 

742 

714 

648 

629

623 

617 

587 

557 

539

498 

471 

444 

427 

410

388 

372 

383 

383 

383 

372

Minimum

378 

405 

245

150

265 

225 

380 

410 

587 

940 

372 

281 

222

222

-ft.j June

Aug.

356 

350 

346 

350 

350

346 

336 

336 

336 

336

328 

332 

34& 

346 

346

336 

328 

328 

318 

314

310 

310 

310 

310 

293

281 

341 

332 

332 

318 

314

Mean

548 

438 

340

813

332 

313 

486 

560 

1,027 

2,016 

615 

330 

403

617

15 (5 p.m.

Sept.

314 

305 

297 

297 

265

222 

293 

471 , 

438

361

438 

438 

388 

422 

432

444 

427 

410 

405 

427

515 

493 

476 

466 

476

454 

444 

432 

416 

416

Runoff In 

acre-feet

33,680 

26,090 

20,880

588,500

20,420 

17,390 

29,870 

33,300 

63,140 

120,000 

37,810 

20,260 

23,960

446,800

) 2,890

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for station near Meeker, Colo.

Note. Stage-discharge relation affected by Ice Dec. 14 to Mar. 22.
GREEN RIVER BASIN 285

Willow Creek near Ouray, Utah

Location. Water-stage recorder, lat. 39°56 I 30", long. 109°39 I 00", in sec. 22, T. 10 S., 

R. 20 E. Salt Lake meridian, 8 miles upstream from mouth and 10 miles south of Ouray.

Drainage area. 967 square miles.

Records available. July 1947 to September 1950.

Extremes. Maximum discharge during year, 214 second-feet Sept. 7 (gage height, 2.66 

feet); minimum, 3.5 second-feet July 3.

1947-50: Maximum discharge, 905 second-feet Aug. 6, 1947 (gage height, 5.56 feet), 

from rating curve extended above 200 second-feet on basis of slope-area determinations 

at 4.27 and 5.18 feet; no flow at times during summer of 1948.

Remarks. Records good except those for periods of ice effect or doubtful or no gageheight record, which are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

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.

36 

31 

29 

27 

28

28 

28

31 

37 

43

40 

36 

38 

37 

36

35 

35 

34 

44 

58

46 

43 

40 

41 

42

41 

40 

40 

40 

40 

40

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apri 

May.

June 

July 

Augu 

Sept

Wa

Nov.

38 

39 

39 

39 

39

38 

38 

37 

41 

40

42 

41 

34 

36 

40

45

42 

41 

39 

40

40 

38 

35 

36 

43

42 

41 

*40 

39 

35

Dec.

30 

*25 

25 

24 

*23

30 

41 

43 

*42 

30

20 

*10 

10

11 

11

*10 

10 

12 

15 

20

15 

13 

13 

14 

18

20 

20 

18 

17 

17 

17

Jan.

15 

20

Feb.

\ 20

t- 

|.

1"

30

Month

lendar year 1949

ter year 1949-5O .......................

Mar.

30 

33

35 

35 

38

40 

43 

45 

50 

55

45 

40 

*40 

45 

50

58 

*63 

67 

65 

61

60 

55 

61 

57 

67

66 

57 

52 

48 

51 

60

Apr.

61 

66 

73 

73 

63

64 

66 

80 

98 

106

85 

63 

81 

80 

96

96 

88 

91 

92 

91

92 

96 

100 

106

111

HE 

114 

116 

122 

119

Secondfoot -days

1,164 

1,177 

624

16,474

540 

690 

1,572 

2,721 

2,493 

1,029.0 

741.9 

272.4 

496.6

13,520.9

May

114 

106 

100 

98 

103

94 

96 

90 

85 

83

78 

78 

76 

72 

72

76 

78 

77 

76 

77

77 

75 

72 

70 

70

70 

71 

71 

66 

60 

60

Maximum

58 

45 

43

260

67 

122 

114 

60 

59 

15 

30

122

June

60 

58 

58 

58 

60

57 

55 

55 

56 

52

49

47 

42 

40 

36

29

26 

23 

22

19

18 

16 

14 

13 

13

12 

12 

10 

9.5 

9.5

Minimum

July

9.5 

7.0 

8.2 

7.0 

8.2

9.0

14 

24 

42 

34

59 

38 

31 

29 

29

29 

28 

28 

29 

28

27 

24 

23 

20 

21

23 

23 

27 

26

21 

16

27 

34 

10

-

30 

61 

60 

9.5 

7.0 

4.7 

5.0

4.7

Aug.

15 

13 

12 

12 

10

9.5 

9.0 

9.0 

9.5 

11

11 

12 

12 

12 

10

9.5 

9.0 

8.6

7.8 

7.4

7.0 

5.4 

5.4 

5.8 

5.4

5.4 

5.8 

6.6 

6.2 

5.4 

4.7

Mean

37.5 

39.2 

20.1

45.1

17.4 

24.6 

50.7 

90.7 

80.4 

34.3 

23.9 

8.79 

16.6

37.0

Sept.

5.0 

6.2 

6.6 

7.0 

7.8

7.0 

21 

16 

11 

18

16 

d!5 

d!2 

d30 

16

16 

16 

16 

16 

21

21 

21 

22 

23 

25

25 

22 

21 

19 

18

Runoff in 

acre-feet

2,310 

2,, 330 

1,240

32,680

1,070 

1,370 

3,120 

5,400 

4,940 

2,040 

1,470 

540 

985

26,820

Winter discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of a study of gage-height chart.

Mote. Stage-discharge relation affected by ice Nov. 30 to Dec. 6, Dec. 10 to Mar, 15 (no gagehelght record Jan. 5-9, Jan. 13 to Mar. 6, Mar. 16, 17; discharge computed on basis of 1 discharge 

measurement, weather records, and records for other stations).
286 GBEEN RIVER BASIN

Minnie Maud Creek at Nutter Ranch, near Myton, Utah

Location. Water-stage recorder, lat. 39°48'45", long. 110°15'00", in SE^ sec. 32, T. 11 

S., K. 15 E., 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 square miles.

Records available.--July 1947 to September 1950.

Extremes. Maximum discharge during year, 467 second-feet July 28 (gage height, 4.56 feet); 

minimum, 3.1 second-feet Aug. 28.

1947-50: Maximum discharge, 704 second-feet Aug. 22, 1947 (gage height, 5.96 feet); 

minimum recorded, 0.4 second-foot Aug. 4, 1948.

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

which are fair. Some diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

17 

17

16 

15 

15

16 

16 

19 

22 

19

18 

20 

19 

19 

18

19 

19 

21 

. 27 

22

21 

19 

19 

19 

19

18 

18 

18 

18 

18 

16

Nov.

17 

17 

17 

17

16

16 

16 

17 

16 

18

16 

15 

15 

16 

16

16 

15 

16 

16 

15

15 

15 

*15 

17 

16

16

15 

16 

15 

b!4

Dec.

b!4

. b!3

f b!2 

> 12

Jan.

(*)

11

Feb.

11 

C)

t» 

} " 

) "

15 

16

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

16

16 

17 

19

20

24

*27

25 

23

19 

22

25

23 

24 

23

21

21

20 

21 

20 

21 

21

19 

18 

19 

21 

25 

25

Apr.

28 

33 

39 

28 

33

33

41 

55 

63 

51

52 

56 

66 

83 

82

85 

88 

94 

89 

88

110 

130 

160 

170 

150

135 

130 

115 

102 

101

Secondfoot -days

577 

477 

402

13,599.1

~ 341 

337 

655 

2,490 

3,108 

1,029 

1,206 

313.2 

297.3

11,232.5

May

99 

98 

96 

98 

102

101 

101 

91 

88 

80

74 

70 

65 

63 

67

76 

96 

126 

135 

136

136

135 

130 

121 

121

109 

104 

107 

104 

91 

88

Maximum

27 

18

245

27 

170 

136 

82 

80 

25 

17

170

June

82 

74 

74 

70 

65

56 

50 

47 

44 

43

38 

34 

29 

26 

26

25 

23

21 

21 

19

19 

19 

18 

17 

16

16

15 

15 

14 

13

July

14 

18 

34 

39 

32

29 

31 

50 

60 

50

80 

65 

55 

45

41

38 

37 

36 

34 

33

32 

31 

30 

30 

29

29 

30 

60 

46 

37 

31

Minimum

15 

14

-

16 

28 

63 

13 

14 

3.7 

3.4

3.4

Aug.

25 

24 

22

19 

18

23 

23

19 

13

11

9.6 

8.2 

7.2 

6.2 

5.6

5.0 

4.6 

4.4 

6.2 

6.9

5.9 

5.2 

4.8 

4.4 

4.3

6.2 

5.6 

3.7 

3.9 

3.9 

4.4

Mean

18.6 

15.9 

13.0

37.3

11.0 

12.0 

21.1 

83.0 

100 

34.3 

38.9 

10.1 

9.91

30.8

Sept.

4.3 

4.1 

3.9 

4.1 

3.9

3.4 

13 

8.2 

7.9 

7.2

7.4 

7.4 

7.2 

7.9 

9.6

9.9

9.9 

10 

10

12

13 

13 

13 

14 

14

15 

15 

16 

17 

16

Runoff In 

acre-feet

1,140 

946 

797

26,970

676 

668 

1,300 

4,940 

6,160 

2,040 

2,390 

621 

590

22,270

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 25 to Mar. 9, Apr. 21-28, July 9-28 (stage-discharge relation 

affected-by Ice during part of these periods); discharge computed on basis of 3 discharge measurement;^ 

weather records, and records for nearby streams.
GREEN RIVER BASIN 887

Price River above Scofield Reservoir, near Scofield, Utah

Location.--Water-stage recorder, lat. 39°46', long. 111°11', in SE£ sec. 18, T. 12 S., R. 

 '/ E., at mouth of canyon, 800 feet upstream from bridge, half a mile upstream from Pontown Creek, and 4 miles north of Scofield.

Drainage area.--68 square miles.

Records available.--June 1931 to September 1932 (fragmentary, published as Fish Creek above 

reservoir, near Scofield), October 1938 to September 1950.

Average discharge.--18 years (1938-50), 45.0 second-feet.

Extremes.--Maximum discharge during year, 463 second-feet May-23 (gage height, 2.66 feet); 

minimum not determined, probably occurred during period of no gage-height record.

1931-38, 1938-50: Maximum discharge, 6V3 second-feet May 19, 1932; minimum determined, 3 second-feet Sept. 10-30, 1932, Nov. 9, 1942, Oct. 24, 1945, 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 nc gage-height record, 

or backwater, which are fair. Small transmountain diversions in leadwaters for irrigation in Sevier Lake Basin, and one diversion above station fcr irrigation.

Discharge, in second-feet, water year October 1949 to Septer >er 1950

Day

1 

2 

3 

4

5

6 

7 

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.

9.6 

9.1 

9.1 

9.1 

9.6

9.6 

11 

. 12 

13 

14

14 

13 

14 

13 

12

11 

*11 

14 

20 

17

14 

14 

13 

13 

13

13

13 

12 

12 

12

11

Nov.

10 

10

11 

11

12

12 

12 

12 

12 

14

13

11 

11 

*12 

12

12 

12 

12 

11 

11

11 

11 

10

11

10

11 

11 

11 

11

10

Dec.

(*) 

9.0

Jan.

8.0

Feb.

(*) 

8.0

-v Month

do to 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

UQTT

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

9.0 

(*)

Apr.

10 

11 

11 

10 

10

11

14 

20 

30 

28

26 

25 

35 

50 

48

50 

56 

65 

70 

81

106 

132 

162 

164 

144

149

160 

146 

121 

105

Secondfoot -days

385.1 

340 

279.0

19,636.5

248.0 

224.0 

279.0 

2,050 

7,337 

3,310 

964 

458 

376

16,250.1

May

96 

98

117 

110 

96

90 

85 

78 

73 

73

79 

96 

122 

166 

216

276 

342 

363 

363

371

396 

424 

432 

429 

415

371 

350 

327 

307 

290 

286

Maximum

20 

14

496

164 

432 

265 

45 

, 20 

14

432

June July

265 43 

241 42 

216 41 

195 40 

179 39

166 38 

160 42 

153 44 

142 45 

125 39

114 37 

108 34 

102 32 

98 30 

93 29

89 26 

83 27 

78 32 

74 30

71 26

69 24 

65 23 

62 23 

59 23 

57 23

54 23 

51 23 

50 23 

48 22 

43 21 

20

Mlniraun

9 1 

10

-

10 

73 

43 

20 

12 

10

-

Aug.

20 

19 

19 

18 

19

18 

16 

16 

14 

14

14 

16 

14 

14

13

14 

14 

13 

13 

13

12 

13 

13

13 

13

13 

14 

14 

14 

14 

14

Mean

12.4 

11.3 

9.0

53.8

8.0 

8.0 

9.0 

68.3 

£37 

110 

31.1 

14.8 

12.5

44.5

Sept.

14 

14 

14 

13 

13

13 

13 

14

13 

10

11 

11 

11 

11 

11

12 

13

12 

12 

13

13 

13 

13 

13 

13

13 

13 

13 

12

12

Runoff in 

acre-feet

764 

674 

553

38,950

492 

444 

553 

4,070 

14,550 

6,570 

1,910 

908 

746

32,230

Peak discharge (base. 35O see .-ft.).--May 23 (1O:15 p.m.) 463 sec.-ft.

* Winter discharge measurement made on this day.

Note. Ho gage-height record Dec. 5 to Apr. 16 (stage-discharge relation affected by ice most of 

period), Aug. 12-22; discharge computed on basis of 3 discharge measurements, weather records, and 

records for nearby stations. Stage-discharge relation affected by Ice Nov. 11-23, Nov. 25 to Dec. 

Stage-discharge relation affected by backwater from beaver dams Aug. 27 to Sept. 16.
288 GREEN RIVER BASIN

Scofield Reservoir near Scofie]d, Utah

Location.--Inclined staff-gage, lat. 39 0 47', long. 111 C 08', in sec. 10, T. 12 S., R. 7 E., 

200 feet from face of dam on Price River and 5 miles northeast of Scofield. Datum of 

gage is mean sea level (levels by Bureau of Reclamation).

Drainage area. 163 square miles.

Kecords available. October 1941 to September 1950. Fragmentary records 1926 to 1941 on 

rile in urrice of State engineer.

Extremes. Maximum net contents during year, 54,560 acre-feet June 9, 10 (elevation, 

7,613.4 feet); minimum, 18,300 acre-feet Oct. 8-20 (elevation, 7,597.8 feet). 

1941-50: Maximum net contents, that of June 9, 10, 1950.

Maximum contents known, about 56,500 acre-feet at time first partial failure occurred May 21, 1928 (elevation, about 7,607.2 feet).

Remarks. Reservoir is formed by earth- and rock-fill, rock-faced dam 800 feet downstream 

From old dam in use up to Nov. 7, 1945. Use of new dam began Nov. 8, 1945. Usable 

capacity of reservoir formed by new dam is 64,380 acre-feet between elevations 7,586.0 

feet (bottom of outlet works) and 7,617 feet, (crest of spillway). Dead storage, 8,000 

acre-feet below elevation 7,586.0 feet. Gage read to tenths about 9 a.m.; figures 

given herein represent usable contents at that time. Water used for irrigation in 

vicinity of Price.

Cooperation.--Capacity table furnished by Bureau of Reclamation.

KevisionsTwater years). W 108'9: 1946.

Contents, In acre-feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

18 , 900

18,900

18 , 900

18,700

18,500

18,500

18,500

18,300

18,300

18,300

18,300

18,300

18,300

18,300

18,300

is, 300

18,300

18,300

18,300

18,300

18,500

ISyBOS

16,700

18,700

18,700

18,700

18,700

13,700

18,700

18,700

18,700

Nov.

18,900

18,900

18 , 900

18,900

18,900

18,900

19,100

19,100

19,100

19,100

19,300

19,300

19,300

19,300

19,300

19,300

19,500

19,500

19,500

19,500

19,5OO

19,500

19,500

_

19,700

19,700

19,700

19,700

19,700

19,700

-

Dec.

19,900

19,900

19,900

.

19,700

19,700

19,700

19,700

19,700

19,700

_

19,900

19,900

19,900

19,900

20,100

20,100

.

20,300

20,300

20,500

20,500

20,710

20,710

20,710

20,910

20,910

21,110

21,110

21,320

21,320

Jan.

321,320

21,320

21,520

21,520

21,520

21,720

21,720

21,720

21,930

21,930

21,930

21,930

21,930

22,130

22,130

22 , 340

22,340

22,340

22,340

22,540

22,540

22,540

22,540

22,540

22 , 750

22,750

22,750

22,960

22,960

23,160

23,160

Fab.

23,160

23,370

23,370

23,370

23,370

23,370

23,370

23,580

23,580

23,580

23,580

23,580

23,780

2^,780

23,780

23,780

23,780

23,780

23,990

23,990

23,990

23,990

23,990

23,990

23,990

23,990

24,200

24,200

_

_

-

Mar.

24,200

24,200

24,200

24,200

24,410

24,410

24,ilO

24,410

24,410

24,410

24,620

24,620

24,620

24,830

24,830

24,830

24,830

24,830

25,040

25,040

25,040

25,040

25,250

25,250

25,250

25,460

25,460

25,460

25,460

25,670

25,670

Apr.

25,670

25,880

25,380

26,090

26,090

26,300

26,300

26,520

26,520

26,730

26,940

27,160

27,370

27,590

27,800

28,020

28,240

28,450

28,670

29,110

29,330

29,550

30,210

30,660

31,100

31,550

32 , 010

32,230

32,690

32,910

May

33,370

33,600

33,830

34,300

34,760

35,230

35,460

35,700

35,700

35,930

35,930

36,170

36,400

36,640

36,890

37,590

38,310

39,280

40,250

41,230

42,220

43,210

44,460

45,720

46,740

48,020

48,790

49,830

50,350

51,130

51,920

June

52,440

52,970

53,500

53,760

54,030

54,300

54,300

54,300

54,560

54,560

54,300

54,300

54,300

54,300

54,300

54,030

54,030

53,760

53,500

53,230

52 , 970

53,230

52,970

52,710

52,440

52,180

51,920

51,650

51,390

51,130

July

50,870

50,610

50,350

50,090

49,830

49,570

49,310

49,050

48,790

48,540

48,540

48,540

48,540

48,280

48,280

48,280

48,020

47,760

47,760

47,510

47,250

47,250

46,740

46,480

46,230

45,980

45,220

44,960

44,710

44,210

43,710

Aug.

43,710

42,960

42,460

41,970

41,480

41,230

40,740

40,250

40,000

39,670

39,520

39,280

39,030

38,790

38,310

38,070

37,590

37,120

36,640

36,170

35,930

35,460

34,990

34,760

34,300

33,830

33,6QO

33,140

32,690

32,230

31,780

Sept.

31,330

31,100

30,660

30,430

30,210

29,990

29,770

29,550

29,330

29,110

28,890

28,670

28,670

28,670

28,450

28,240

28,020

28,020

27,800

27,800'

27,590

27,590

27,590

27,590

27,370

27,370

27,370

27,160

27,160

26,940

-

Monthly elevation and contents, water year October 1949 to September 1950

Date

Dec. 1..................

Calendar year 1949....

Feb. 1...... ............

Mar. 1..................

Apr. 1..................

May 1..................

Aug. 1. .................

Oat. 1..................

Water year 1949< -50. . . .

Elevation 

(feet)

7,598.1 

7,598.1 

7,598.6

-

7,600.2 

7,600.7 

,601.4 

,604.9 

,612.6 

,612.0 

,609.2 

,604.0 

,602.0

-

Contents 

(acre-feet)

18,900 

18,900 

19,900

-

321,320 

23,160 

24,200 

25,670 

33,370 

52,440 

50,870 

43,710 

31,330 

26,940

-

Change In contents 

during month 

(sere-feet)

0 

+1,000 

+1,420

+18,540

+1,840 

+1,04O 

+1,470 

+7,700 

+19,070 

-1,570 

-7,160 

-12,380 

-4,390

+8,040

a No gage-height record) contents Interpolated. 

Note. 8,000 acre-feet of dead storage not Included In contents.
GREEN RIVER BASIN 289

Price River near Scofield, Utah

Location. Water-stage recorder and concrete control, lat. 39°47', long. 111°07', in SE£ 

sec. 10, T. 12 S., R. 7 E., 800 feet downstream from new Scofield Reservoir Dam, 5 miles 

northeast of Scofield, and 9 miles upstream from White River. Datum of gage is 7,570.13 

feet above mean sea level.

Drainage aiysa. 163 square miles.

Records available.-November 1917 to September 1921, June to September 1925, April 1926 to 

septemoer 1931, October 1938 to September 1950.

Average discharge. 17 years (1926-31, 1938-50), 58.9 second-feet.

Extremes.--Maximum daily discharge during year, 252 second-feet July 29; practically no 

 now during winter when reservoir gates were closed.

1917-20, 1926-31, 1938-50: Maximum discharge, 1,000 second-feet on or about May 24, 

1920 (gage height, 10.4 feet, from floodmark, site and datum then in use), from rating 

curve extended above 500 second-feet. 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 

by backwater, which are poor. Plow completely regulated by Scofield Reservoir (see preceding page). Small diversions above Scofield Reservoir for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

24 

12 

53 

64 

62

62 

60 

58 

56 

25

13

13 

12 

12 

12

12 

12 

4.0

0.3

Nov.

0.2

Dec.

0.2

Jan.

0.2

Feb.

0.3

Month

Octo 

Nove 

Dece

Ca

Janu. 

Pebri 

Hare 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

0.3

Apr.

0.3

Secondfoot-days

569.9 

6.0 

6.2

16,226.8

6.2 

8.4 

9.3 

9.0 

432.5 

4,792 

5,328 

6,055 

2,663

19,885.5

May

0.3 

.3 

.3 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4

g-* 

E24 

g75 

g58

g!5 

.6 

.6 

.6 

.7

20 

30 

30 

52 

56 

62

Maximum

64

246

75 

194 

252 

250 

181

252

June

81 

86 

106 

128 

137

153 

156 

156 

143 

153

159 

170 

178 

178 

178

176 

176 

176 

176 

194

123 

127 

178 

181 

181

178 

194 

191 

190 

189

Minimum

July

207 

200 

200 

200 

209

204 

207 

202

181 

153

120 

80 

55 

38 

96

100 

103 

106

111 

120

140 

184 

196 

221 

231

229 

233 

250 

252 

250 

250

_

-

.3

81 

38 

150 

43

-

Aug.

250 

233 

215

211 

202

200 

198 

176 

156 

150

153 

150 

156 

193 

189

211 

217 

217 

215 

217

233 

223 

217 

213 

193

181 

181 

176 

167 

181 

181

Mean

18.4 

0.2 

.2

44.5

.2 

.3 

.3 

.3

14.0 

160 

172 

195 

88.8

54.5

Sept.

181 

173

162 

162 

153

125 

106 

101 

98 

98

101 

85 

85 

90 

90

88 

85 

88 

70 

50

52 

50 

52 

50 

50

46 

43 

43 

43 

43

Runoff In 

acre-feet

1,130 

12 

12

32,190

12 

17 

18 

18 

858 

9,500 

10,570 

12,010 

5,280

39,440

g Computed from graph based on gage readings.

Note. Ho gage-height record Oct. 18 to Apr. 30, July 11, 12, 16, 17 Sept. 12-30; discharge computed on basis of 2 discharge measurements, 2 estimates of flow, observer's notes, and records for 

station near Helner. Stage-discharge relation affected by backwater July 18 to Sept. 11.
290 GREEN RIVER BASIN

Price Rive..1 near Heiner, Utah

Location.--Water-stage recorder, lat. 39°43'05", long. 110°51'55", in SW^ sec. 1..T. 13 S., 

K. y K., two-thirds of a mile north of Heiner and three-quarters of a mile downstream 

from Willow Creek.

Drainage area,--455 square miles.

Records available.--June 1934 to September 1950.

Average discharge.--16 years, 109 second-feet. *

Extremes. Maximum discharge during year, 417 second-feet July 28 (gage height, 2.62 feet); 

minimum recorded, 2.2 second-feet Dec. 1, but may have been less during period of ice 

effect.

1934-50: Maximum discharge, 9,340 second-feet Sept. 13, 1940 (gage height, 7.98 feet), 

by slope-area method; minimum, less than 1 second-foot 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. 288).

Discharge, in second-feet, water year October 1949 to September 1950

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.

68 

26 

19 

62 

65

68 

68 

71 

74 

66

31 

29 

28 

27 

27

27 

27 

47 

44 

27

21 

17 

18 

18 

18

18 

16 

16 

16 

16 

14

Nov.

15 

14 

14 

14 

14

12 

12 

14 

14 

16

14 

13 

13

*14 

16

16 

14 

14 

12 

12

1O

11 

10 

16 

12

11 

12 

12 

11 

8.5

Dec.

6.6 

7.6 

10 

11 

10

11 

11 

12 

12 

12

12 

11 

11 

*11 

11

12 

12 

12

12

11

10 

9.0 

9.0 

10 

9.0

9.0 

9.0 

8.5 

8.5 

9.0 

9.0

Jan.

. 11 

(*)

> 10

9.5

11 

11

11 

1? 

12 

12

. 12

Feb.

> 14 

(*)

17

20 

20 

20 

21 

23

25 

24 

24

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 194*

ter year 1949-50 .......................

Mar.

22 

22

24 

31 

38

41 

32 

31 

36 

*35

33 

26 

32 

35 

33

29 

35 

34 

33 

31

30 

33 

32 

34 

36

29 

31 

28 

28 

34 

52

Apr.

81 

116 

115 

82 

94

111 

160 

206 

167 

140

146 

165 

195 

214 

192

195 

223 

239 

233 

242

276 

317 

357 

353 

325

302 

295 

302 

276 

252

Secondfoot-days

1,089 

390.5 

318.2

43,770.7

342. E 

487 

1,000 

6,371 

7,698 

7,794 

5,727 

6,412 

3,045

40,712.2

May

233 

223 

217 

217 

217

212 

203 

187 

174 

170

165 

160 

165 

256 

280

302 

295 

317 

321 

314

302 

298 

295 

295 

280

270 

280 

262 

259 

270 

259

Maximum

74 

16 

12

483

52 

357 

321 

302 

284 

252 

195

357

June

276 

273 

273 

287 

287

291 

295 

302 

276 

270

270 

276 

287 

284 

280

273 

273 

266 

262 

276

246 

144 

236 

230 

226

223 

226 

236 

230 

220

July

223 

230 

217 

214 

214

223 

230 

236 

182 

180

142 

f!25 

flOl 

62 

85

111 

115 

156 

151 

i49

151 

153 

172 

190 

217

223 

217 

284 

266 

259 

249

Minimum

14 

8.5 

6.6

-

22 

81 

160 

144 

62 

162 

42

6.6

Aug.

249 

246 

226 

223 

223

212 

190 

180 

165 

162

170

170 

172 

192 

195

195 

230 

230 

226 

220

252 

242 

239 

239 

223

195 

192 

192 

190 

177 

195

Mean

35.1 

13.0 

10.3

120

11.0 

17.4 

32.2 

212 

248 

260 

185 

207 

102

112

Sept.

195 

192 

187 

172 

162

156 

125 

129 

115 

117

117 

115 

90 

90 

96

98 

98 

90 

93 

77

55 

56 

54 

55 

55

53 

43 

42 

44 

74

Runoff In 

acre-feet

2,160 

775 

631

86,820

679 

966 

1,980 

12,640 

15,370 

15,560 

11,360 

12,720 

6,040

80,750

* Winter discharge measurement made on this day.

f Computed on basis of partly estimated gage heights.

Note_. Stage-discharge relation affected by ice Dec. 3-9, Dec. 12 to Jan. 17, Jan. 25 to Feb. 26 

(no gage-height record Dec. 25 to Jan. 9, Jan. 27 to Feb. 25; discharge computed on basis of 3 discharge measurements, weather records, and records for nearby stations).
GREEN RIVER BASIN 291

Price River at Woodside, Utah

Location.--Water-stage recorder, lat. 39°17' , long. 110°21 I , in SEtr sec. 9, T. 18 S., R. 

IT~E7, at bridge on U. S. Highway 50 at Woodside, and 20 miles upstream from mouth.

Drainage area.--1,500 square miles.

Records available.--April 1909 to August 1911, November 1945 to September 1950.

Extremes.--Maximum discharge during year, 3,260 second-feet-July 8 (gage height, 3.93 

FeeTT; minimum recorded, 6.9 second-feet Dec. 12.

1909-11, 1945-50: Maximum discharge observed, 8,100 second-feet Sept. 1, 1909, by 

float measurement; no flow for several days during July, August, September 1910.

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 Scofleld Reservoir (see p. 288).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

. 5

6 

7 

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.

161 

108 

84 

63 

50

50 

54 

67 

82 

108

84 

67 

58 

61 

56

56 

50 

98 

378

332

195' 

123 

94 

72 

67

58 

56 

54 

54 

54 

54

Nov.

52 

52 

52 

48 

50

50 

46 

48 

48 

48

52 

50 

50 

48 

48

48 

50 

48 

45 

45

45 

45 

43 

43 

46

50 

50 

48 

46 

45

Dec.

43 

42 

38 

34 

29

42 

45 

*56 

65 

79

79 

22 

22 

22 

*22

23 

25 

27 

30

31

29 

28

29 

31 

33

32 

*30 

28 

28 

29 

30

Jan.

(*)

(*) 

28

(*5 

(*)

Feb.

30 (*)

1

33 

,.,

35 

40 

50 

70 

*110

140 

180 

250 

300 

350

325 

*280 

300

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

d240 

d!60 

d!25 

dllO 

d!05

dlOO 

dlOO 

dlOO 

dlOO 

103

106 

97 

89 

79 

82

92 

84 

86 

97 

100

94 

89 

86 

82 

94

108 

97 

89 

92 

89 

97

Apr.

108 

132 

157 

174 

148

148 

164 

198 

261 

261

202 

198 

202 

248 

261

221 

217 

261 

290 

252

234 

275 

290 

320 

332

300 

230 

217 

206 

180

Secondfoot-days

2,948 

1,439 

1,103

45,203

868 

2,895 

3,172 

6,687 

4,096 

2,150 

5,090 

1,619 

2,083

34,150

May

167 

142 

129 

123 

123

120 

123 

120 

120 

100

92 

84 

76 

67 

72

148 

174 

167 

202 

210

195 

184 

174 

164 

151

129 

123 

114 

114 

103 

86

Maximum

378 

52 

79

1,770

350 

240 

332 

210 

111 

1,020 

82 

204

1,020

June

82 

72 

74 

76 

74

82 

76 

79 

108

111

82 

67 

67 

69 

65

58 

56 

58 

63 

63

67 

106 

111 

54 

58

61 

61 

54 

50 

46

July

45 

43 

45 

50 

61

58 

299 

1,020 

d812 

a300

also 

180 

138 

100 

79

67 

61 

105 

500 

d!75

d90 

d65 

d55 

d50 

d48

d53 

56 

56 

117 

126 

86

Minimum

50 

43 

22

-

79 

108 

67 

46 

43 

38 

35

-

Aug.

82 

76 

79 

69 

65

65 

63 

58 

58 

54

48 

48

46 

43 

40

43 

45 

43 

48 

61

43 

38 

40 

45 

45

48 

54 

45 

43 

46 

46

Mean

95.1 

48.0 

35.6

124

28.0 

103 

102 

223 

132 

71.7 

164 

52.2 

69.4

93.6

Sept.

38 

40 

43 

43 

52

50 

63 

84 

135 

103

92 

92 

79 

67 

54

54 

50 

48 

113 

204

129 

74 

54 

46 

52

58 

48 

43 

40 

35

Runoff In 

acre-feet

5,850 

2,850 

2,190

89,660

1,720 

5,740 

6,290 

13,260 

8,120 

4,260 

10,100 

3,210 

4,130

67,720

Peak discharge (base. 1.OOP.see.-ft.). July 7 (9:30 p.m.) 2,640 sec.-ft.; July 8 (ll p.m.) 3,260 

sec.-ft.; July 19 (~L a.m.) 2,300 see.-ft. /

» Winter discharge Measurement made on this day.

a No gage-height record) discharge computed on basis of records for other Prlca River stations.

d Doubtful gage-height record; discharge computed! as explained jjj footnote a.

Note .-'-Stage-discharge relation affected by Ice Dec. 13 to Feb. 26 (no gage-height record Dec. 28 

to Feb. 19j discharge computed on basis of 6 discharge measurements, weather records, and records for 

nearby stations).
292 GREEN RIVER BASIN

Gooseberry Creek near Scofield, Utah

Location.--Water-stage recorder, lat. 39°43', long. 111°18', in SVf£ sec. 6, T. 13 S., R. 

b E., 300 feet downstream from old Mammoth Dam, 5j miles upstream from mouth, and 

7 miles west of Scofield.

Drainage area.--16.4 square miles.

Record* available. October 1930 to September 1931, May 1940 to September 1950.

Average discharge.--11 years (1930-31, 1940-50), 19.2 second-feet.

Extremes.--Maximum discharge during year, 235 second-feet May 22 (gage height, 1.82 feet); 

minimum not determined, occurred during period of no gage-height record.

1930-31, 1940-50: Maximum discharge, 366 second-feet May 18, 1941 (gage height, 2.25 

feet); minimum recorded, 1.6 second-feet Aug. 30, 1946.

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

are fair. Transmountain diversion above station to Sevier River Basin for irrigation, 

part of which is water diverted into Gooseberry Creek from Boulger Creek. A small reservoir on Gooseberry Creek 5 miles above station (capacity, about 1,900 acre-feet) is 

ased to regulate these diversions. Flow also affected by small reservoir 1 mile above 

station.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2

3

4 

5

6 

7 

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.

3.3 

3.3 

3.3 

3.3

3.5

3.5 

4.0 

4.5 

4.5 

4.5

4.0 

4.5 

4.5 

4.0 

3.5

3.5 

3.5 

4.0 

4.5 

4.5

4.0 

4.0 

3.5 

3.5

3.5

4.0 

4.2 

4.2 

4.0 

4.0 

4.1

Nov.

4.1 

3.6 

3.6 

3.3 

2.9

2.9 

2.9 

2.6 

2.6

3.3

3.6 

2.9 

2.6 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.6

2.6 

2.6 

2.9 

2.9 

2.9

3.3 

3.3 

*3.6 

3.3 

2.6

Dec.

2.6 

d2.2

2.2

Jan.

2.0

Feb.

2.0

Month

Octo 

Hove

Dece

Ca

Janu 

Pebn 

Hare 

Aprl

Mftv

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-5O ...............

Mar.

3.0 

*3.6

Apr.

3.6 

4.1

4.1 

3.6 

3.6

4.1 

4.6 

6.5 

7.0 

6.5

6.0 

5.6 

7.0 

8.0 

7.5

7.5 

9.6 

12 

15 

19

26 

33 

46 

50 

44

50

i 57 

52 

38

31

Secondfoot-days

121.2 

87.3 

68.6

8,121.4

62.0 

56.0 

93.6 

571.9 

2,856 

1,220 

385.0 

193.6 

172.8

5,888.0

May

26 

28 

37 

30 

23

19

17 

14 

13 

12

14 

20 

33 

50 

66

99

132 

139 

139 

149

172 

193 

193 

2OO 

184

161 

153 

149 

135 

130 

126

Maximum

4.5 

4.1

290

57 

200 

110 

21

7.5 

7.0

200

June

110 

98 

86

76 

67

61 

59 

60

55 

46

41 

38 

36 

33

31

29 

27 

26 

24 

24

24 

22

21 

20 

19

19 

18 

18 

16 

16

MlnlBUB

July

3.3 

2.3

-

3.6 

12 

16 

7.5 

5.6 

3.6

-

16

15 

15 

15 

15

15 

17 

21 

21 

17

15

13 

12 

12 

12

11 

11 

13 

12

11

10 

9.0 

9.0 

9.0 

9.0

9.0 

9.0

9.0 

8.0

7.5 

7.5

Aug.

7.5 

7.5 

7.5 

7.0 

7.0

6.0 

6.0 

6.5 

6.0

6.5

7.5 

7.0 

6.5 

6.5 

6.0

6.5 

6.5 

6.0 

6.0 

5.6

5.6 

5.6 

6.0 

5.6 

5.6

5.6 

5.6 

5.6 

5.6 

5.6 

5.6

Mean

3.91 

2.91 

2.21

22.3

2.0 

2.0 

3.02 

19.1 

92.1 

40.7 

12.4 

6.25 

5.78

16.1

Sept.

5.6 

5.6 

5.6 

5.6 

5.6

5.6 

6.0 

7.0 

7.0 

6.0

6.5 

6.5 

6.5 

6.5 

6.0

6.0 

5.6 

5.6 

5.6 

6.0

6.0 

5.6

5.6 

5.6 

5.6

5.1 

5.1 

5.1 

5.1 

3.6

Runoff In

acre-feet

240

173 

136

16,110

123 

111 

186 

1,130 

5,660 

2,420 

764 

384 

343

11,670

* Winter discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of weather records and records for nearby stations.

Note. Ho gage-height record Oct. 4-3O, Dec. 11 to Mar. 3O; discharge computed as explained In 

footnote d.
GREEN RIVER BASIN 293

White River near Soldier Summit, Utah

Location.--Water-stage recorder and concrete control, lat. 39°55", long. 111°04', in SE-jjsec. 30, T. 10 S., R. 8 E., 600 feet downstream from North Pork and 1 mile southeast of 

Soldier Summit.

Records available.--April 1938 to September 1950. 

Average discharge. 11 years (1939-50), 18.3 second-feet.

Extremes.--Maximum discharge during year, 221 second-feet Apr. 22 (gage height, 2.00 feet); 

minimum not determined, probably occurred during period of no gage-height record.

1938-50: Maximum discharge, 288 second-feet May 10, 1941 (gage height, 3.70 feet); 

no flow at times in July, August, September 1939.

Remarks. --Records go"od except those for periods of no gage-height record and those affectea by backwater, which are fair. Two small diversions from North Pork for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

4.6 

4.6 

4.6 

4.6 

4.6

4.3 

4.6 

5.0 

5.4 

5.8

5.8 

5.8 

5.4 

5.0 

5.0

5.0 

5.0 

5.4 

8.1 

6.5

5.8 

5.4 

5.8 

5.8 

5.4

5.0 

5.0 

4.6 

4.6 

4.3 

3.9

Nov.

3.9 

4.3 

4.3 

4.3 

3.9

3.9 

4.3 

4.6 

4.6 

5.8

6.1 

5.4 

5.0 

*4.6 

5.0

5.0 

4.6 

5.0 

5.0 

4.6

4.3 

3.9 

3.9 

4.3 

4.3

3.9 

3.9 

4.3 

3.9 

3.7

Dec.

3.4 

3.4 

3.4

(*) 

3.4

Jan.

(*) 

3.0

Feb.

 3.0 

( )

. 4.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 ...............

Mar.

(*) 

5.0

Apr.

12 

18 

24 

23 

25

31 

42 

56 

*51 

43

43 

59 

80 

85 

70

75 

106 

120

112 

124

153 

178 

198 

187 

164

155 

153 

153 

134 

118

Secondfoot-days

160.7 

134.6 

105.4

11,247

93.0 

97.0 

155.0 

2,792 

3,223 

1,001 

331.0 

132.1 

99.5

8,324.3

May

110 

104 

104 

104 

100

89 

85 

75 

72 

67

67 

70 

83 

106 

128

144 

157 

153 

151 

142

134 

130 

122 

118 

112

104 

92 

87 

76 

70 

67

Maximum

8.1 

6.1

269

198 

157 

63 

17 

6.1 

3.8

198

June

63 

60 

58 

54 

50

47 

47 

46 

43 

39

37 

35 

34 

32 

30

27 

26 

26 

25 

24

23 

22 

22 

21 

20

19 

19 

18 

17 

17

July

Minimum

3.9 

3.7

-

12 

67 

17 

6.1 

3.0 

3.0

-

17 

16 

14 

13 

13

13 

13 

14 

13 

13

13 

12 

11 

11 

11

10 

11 

11 

10 

9.1

9.1 

9.1 

8.3 

7.6 

7.2

6.4 

6.8 

8.3 

7.6 

6.4 

6.1

Aug.

6.1 

5.7 

5.3 

5.3 

5.3

5.0 

5.0 

5.0 

4.8 

4.8

5.0 

4.8 

5.0 

4.8 

4.0

4.0 

4.0 

3.8 

3.6 

3.3

3.0 

3.0 

3.3 

3.6 

3.6

3.6 

3.6 

3.. 6 

3.6 

3.3 

3.3

Mean

5.18 

4.49 

3.40

30.8

3.0 

3.46 

5.0 

93.1 

104 

33.4 

10.7 

4.26 

3.32'

22.8

Sept.

3.3 

3.3 

3.3 

3.3 

3.3

3.6 

3.6 

3.8 

3.8 

3.8

3.8 

3.6 

3.3 

3.3 

3.0

3.3 

3.3 

3.3 

3.0 

3.0

3.0 

3.0 

3.0 

3.0 

3.3

3.0 

3.0 

3.3 

3.3 

3.6

Runoff In 

acre -feet

319 

267 

209

22,300

184 

192 

307 

5,540 

6,390 

1,990 

657 

262 

197

16,510

Peak discharge (base, 90 sec.-ft.) . Apr. 22 (9:30 p.m.) 221 sec.-ft.; May 17 (11:30 a.m.) 159 sec.- 

ft.

* Winter discharge measurement made on this day.

Note. No gage-height record Dec. 4 to Apr. 2 (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. Stage-discharge relation affected by backwater Aug. 11 to Sept. 30..
294 GREEN RIVER BASIN

Browns Wash near Green River, Utah

Location. Water-stage recorder, lat. 38°S9', long. 110°09', in SW£ sec. 14, T. 21 S., R. 

lb K., 1 mile upstream from mouth and ij miles east of Green River.

Records available.--February 1949 to September 1950.

Extremes. 1949: Maximum discharge during period February to September, 2,400 secondi'eet Aug. 9 (gage height, 4.95 feet), by slope-area method; no flow at times.

1949-50: Maximum during water year, 738 second-feet Oct. 19 (gage height, 3.33 

feet); no flow at times.

Remarks.--Records poor. No diversions above station.

Discharge, In second-feet, 1949-50

Day

1

2

3

4

5

6

7

8

9

1O

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

1949 ^

Feb.

_

_

-

_

-

_

_

_

_

-

_

-

-

-

-

-

b.2

b.3

b.4

b.5

b.S

*b.8

bl.5

*bl.5

bl.2

b.9

b.6

b.3

-

-

-

May

O

0

O

0

0

0

.8

O

0

0

.3

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June

O

0

' 0

.5

O

O

0

0

0

0

O

O

0

O

O

0

0

0

0

O

0

O

0

0

0

0

0

0

0

0

-

July

0

O

54

33

O

O

O

O

O

O

0

O

0

0

0

O

0

0

0

0

0

0

0

16

160

0

' 00

0

0

°

Aug.

0

0

0

O

O

0

.4

.2

295

2.2

.1

0

0

O

0

0

0

0

O

0

0

0

0

0

0

0

0

0

0

0

0

Sept.

O

.1

O

0

O

0

0

0

O

80

.7

O

39

0

O

0

0

O

0

0

0

O

0

0

0

O

0

0

92

4.6

-

1949-50

Oct.

1.6

.3

O

O

0

0

O

92

f .8

O

0

0

0

0

O

0

0

O

240

f .6

O

O

0

0

0

0

0

O

0

0

0

July

O

0

O

O

0

O

0

f!3

.1

O

0

0

0

O

O

0

0

.3

.2

0

0

0

0

0

0

0

0

0

0

0

0

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

f Discharge computed on basis of partly estimated gage-height record.

Monthly discharge, In second-feet, 1949-50

Month

May. ........................................

September ...................................

MO.V

Water year 1949-50 .......................

Secondfoot-days

216.4

335.3

0

0

348.9

Maximum

92

240

0

0

_

0

0

0

0

0

13

0

0

240

Minimum

0

0

0

0

_

0

0

0

0

Mean

0

.04

.02

8.5

7.2

_

10.8

0

0

.96

Runoff In 

acre-feet

0

2.0

1.0

522

591

429

1,560

665

0

0

692
GREEN RIVER BASIN 295

Huntlngton Creek near Huntington, Utah

Location.--Water-stage recorder, lat. 39°22'15", long. 111°03'45", In SE£ sec. 6, T. 17 

STTTr. 8 E., 1 mile upstream from Pish Creek and 7 miles northwest of Huntlngton.

Drainage area.--188 square miles.

Records available.--May 1909 to September 1917, October 1918 to November 1920 (fragmentary) , April 1921 to September 1950.

Average discharge.--35 years (1910-17, 1921-29, 1930-50), 97.7 second-feet.

Extremes.--Maximum discharge during year, 420 second-feet May 16 (gage height, 3.09 feet)- 

minimum, 5.4 second-feet Mar 13.

1909-50: Maximum discharge, 2,500 second-feet Aug. 2 or 3, 1930 (gage height, 7.5 

feet, from floodmark), from rating curve extended above 600 second-feet; minimum determined, 2 second-feet Nov. 5, 1926, during period of Ice effect, but may have been less 

during other periods of Ice effect.

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

which are fair. Small diversions above station for Irrigation, Including transmountaln diversions to Sevler Lake Basin. Flow slightly regulated by small reservoirs 

above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

32 

23 

24 

25

36 

27 

36 

29 

30 

31

Oct.

35 

34 

33 

34 

34

37 

36 

37 

39 

39

3S 

43 

42 

41 

40

41 

44 

47 

47 

48

47 

44 

45 

46 

45

44 

44 

43 

42 

39 

39

Nov.

39 

36 

38 

33 

30

29 

29 

32 

31 

34

31 

30 

31 

33 

34

*33 

32 

31 

31 

30

28 

26 

28 

33 

30

30 

30 

30 

29 

26

Dec.

25 

22 

27 

21 

24

31 

30 

33 

31 

29

2O 

19 

30 

*22 

22

23 

24 

26 

27 

26

24 

22 

21 

23 

24

23 

22 

21 

21 

22 

22

Jan.

24

23 

22 

21 

20

19 

20 

23 

24

25 

26 

25 

26 

22

23 

24 

25 

35 

24

24 

24 

24 

20 

20

20 

23 

24 

27 

27 

25

Feb.

24 

33 

25 

27 

29

3O 

*31 

23 

23 

25

28 

30 

36 

31 

25

25 

27 

23 

30 

31

27 

26 

32 

30 

32

29 

34 

33

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-5O .......................

Mar.

27 

31 

33 

33 

34

33 

*29 

29 

34

33

32 

26 

16 

37 

34

28 

32 

33 

31 

31

3C 

34 

31 

35 

35

33 

30 

30 

30 

34 

38

Apr.

44 

50 

52 

44 

45

48 

57 

64 

62 

53

55 

63 

72 

75 

68

66 

79 

96 

99 

110

136 

172 

199 

186 

162

169 

191 

181 

138 

126

Secondfoot-days

1,265 

941 

747

39,901

723 

779 

978 

2,964 

7, -795 

5,834 

4,611 

3,241 

1,413

31,291

Peak discharge (base, 400 sec. -ft.). May 16 (11 p.m.)

May

130 

166 

263 

250 

224

209 

171 

150 

146 

142

153 

171 

196 

232 

260

312 

344 

326 

392 

295

316 

336 

330 

336 

" 330

292 

288 

292 

272 

279 

302

Maximum

48 

39 

33

511

27 

34 

38 

199 

344 

292 

201 

138 

73

344

June

292 

275 

253 

241 

236

244 

244 

212 

168 

176

178 

186 

176 

171 

180

232 

218 

188 

183 

174

169 

164 

157 

144 

142

142 

171 

166 

164 

164

July

199 

201 

199 

193 

188

181 

191 

201 

188 

148

138 

132 

128 

128 

130

124 

126 

132 

138 

136

130 

128 

128 

126 

126

126 

138 

134 

128 

124 

122

Aug.

124 

138 

136 

132 

132

128 

130 

128 

124 

112

112 

108 

107 

107 

112

107 

 105 

101 

101 

98

94 

92 

91 

91 

87

86 

78 

72 

7O 

70 

68

Minimum Mean

33 40.8 

26 31.4 

19 24.1

109

19 23.3 

23 27.8 

18 31.5 

44 98.8 

12O 251 

142 194 

122 149 

68 105 

33 47.1

18 65.7

Sept.

66 

66 

64 

64 

64

63 

62 

73 

62 

47

44 

42 

40 

40 

40

44 

41 

39 

40 

40

38 

40 

38 

39 

40

37 

36 

36 

35 

33

Runoff in 

acre-feet

2,510 

1,870 

1,480

79,160

1,43O 

1,550 

1,940 

5,880 

15,460 

IJ.,570 

9,150 

6,430 

2,800

62,070

*caii. iq j.puiiqj.-fec yuaoc, -tw pel;. A I*. J Pltty J.D V iA ±*»IB.^ 420 <fc£U sec. BCU. -ft. .LI..

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 12 to Jan. 14, Jan. 16-16, Feb. 5, 6, 9-11 (no 

gage-height record Dec. 24 to Jan. 10, Jan. 26 to Feb. 4; discharge computed on basis of 2 discharge 

measurements, weather records, and records for nearby stations).

207364 .O - 52 - 20
296 GREEN RIVER BASIN

San Rafael River near Castle Dale, Utah

Location.--Water-stage recorder, lat. 39°09', long. 110°54', in NW~£ sec. 27, T. 19 S., R. 

9 &., half a mile downstream from Perron Creek and 8 miles southeast of Castle Dale.

Drainage area. 927 square miles.

Records available. October 1947 to September 1950.

Extremes. Maximum discharge during year, 1,100 second-feet July 8 (gage height, 4.08 

reet, from floodmark); minimum, 9.2 second-feet Sept. 18. 

1947-50: Maximum discharge, 1,740 second-feet June 18, 1949; minimum recorded, 3.5 

second-feet Aug. 30, Sept. 14, 1948, but may have been less during periods of no gageheight record.

Remarks.--Records good except those for periods of ice effect or doubtful gage-height 

record, which are 1 fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

29 

26 

26 

26 

25

24 

23 

26 

39

37

33 

32 

33 

33 

33

33 

34 

34 

66 

60

47 

44 

41 

41 

42

42 

42 

44 

44 

44 

44

Nov.

44 

45 

44 

45 

44

44 

45 

44 

45 

46

50

46 

45 

48 

*50

50 

52 

52 

50 

52

52 

52 

52 

55 

56

55 

55 

59 

56 

53

Dec.

49 

41 

37 

35 

37

42 

45 

50 

50 

45

39 

34 

22 

23 

26

 28 

31 

33 

35

33

Jan.

29

(*) 

35

> 40

Feb.

1"

(*) 

50

52 

60

80 

100 

92 

90 

96

105 

120 

145 

140 

150

170 

215 

210

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

200 

189 

171 

146 

112

94 

72 

 62 

65 

68

57 

50 

41 

47 

57

56 

52 

49 

45 

49

42 

45 

44 

41 

49

47 

39 

35 

34 

37 

39

Apr.

44 

47 

59 

44 

34

33 

36 

38 

44 

37

34 

34 

47 

60 

55

62 

66 

44 

56 

59

77 

d80 

d80 

d70 

d58

d56 

d54 

d50 

d45 

d40

Secondfoot-days

1,147 

1,486 

1,098

60,079

1,080 

2,450 

2,134 

1,543 

5,284 

5,381 

2,758 

608 

709

25,678

May

d35 

d30 

26 

35 

37

37 

55 

48 

37 

33

28 

28 

28 

31 

40

56 

96 

119 

114 

114

d!80 

d250 

371 

408 

435

394 

386 

426 

417 

435 

555

Maximum

66 

59 

50

1,410

215 

200 

80 

555 

560 

555 

33 

119

560

June

560 

505 

412 

354 

338

342 

318 

268 

219 

189

168 

168 

138 

129 

122

114 

102 

100 

100 

94

90 

78 

78 

70

 68

; es

55 

47 

47 

42

July

39 

47 

46 

48 

47

49 

80 

555 

300

166

151 

100 

80 

73 

84

62 

56 

77 

157 

92

60 

50 

44 

38 

38

33 

34 

39 

53 

31 

29

Aug.

28 

26 

26 

24 

23

23 

21 

22 

20 

20

28 

33 

28 

26 

22

22 

20

19 

15 

14

14 

13 

15 

14 

14

1* 

14 

12 

13 

13 

12

Minimum Mean

23 37.0 

44 49.5 

22 35.4

16 165

34.8 

87.5 

34 68.8 

33 51.4 

26 170 

42 179 

29 89.0 

12 19.6 

10 23.6

10 70.4

Sept.

12 

11 

10 

10 

10

11

44 

35 

30 

26

19 

14 

13 

14 

14

14 

14 

10 

74 

119

27 

21 

21 

21 

21

20 

19 

18 

20

17

Runoff in 

acre-feet

2,280 

2,950 

2,180

119,200

2,140 

4,860 

4,230 

3,060 

10,480 

10,670 

5,470 

1,210 

1,410

50,940

» Winter discharge measurement made on this day.

d_Doubtful gage-height record; discharge computed on basis of records for station near Green River.

Note. Stage-discharge relation affected by ice Dec. 7-10, Dec. 13 to Mar. 1.
GREEN RIVER BASIN 297

San Rafael River near Green River, Utah

Location.--Water-stage recorder, lat. 38°52i, long. 110°22i, in SWij sec. 27, T. 22 S., R. 

14 fi., Just downstream from bridge on State Highway 24, 15 miles southwest of Green 

River, and 35 miles upstream from mouth.

Drainage area. 1,690 square miles.

Records available. May 1909 to September 1918, September 1919 to July 1920 (gage heights 

only), OctroDer 1945 to September 1950.

Average discharge.--14 years (1909-18, 1945-50), 218 second-feet.

Extremes.--Maximum discharge during year, 3,240 second-feet July 8 (gage height, 6.56 feet), 

from rating curve extended above 1,500 second-feet by logarithmic plotting; no flow Aug. 

30 to Sept. 8.

1909-20, 1945-50: Maximum discharge, 8,640 second-feet Aug. 22, 1947, from rating 

curve extended above 800 second-feet by logarithmic plotting; no flow at times.

Remarks.--Records fair. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

68 

45 

37 

29 

22

18 

17 

19 

25 

32

47 

44 

40 

38 

39

39 

38 

39 

d90 

d80

94 

70 

62 

55 

53

53 

52 

54 

52 

52 

55

Nov.

56 

55 

56 

55 

55

54 

54 

53 

50 

50

53 

53 

54 

52 

52

54 

54 

55 

56 

54

53 

52 

50 

49 

49

54 

54 

54 

54 

58

Dec.

55 

52 

49 

43 

41

42 

42 

*53 

56 

70

74 

40 

*22 

20 

22

25 

30 

35

37 

(*)

Jan.

32 

(*)

. 40

(") 

45

Feb.

I < >

> 55

(») 

70

72 

80

*100 

120 

138 

128 

124

 138 

162 

176 

171 

176

219 

246 

d245

Month

Octo 

Nove

Dace

Ca

Janu 

JTebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

ber

inter, ...................................

lendar year 1949

ter year 1949-50 .......................

Mar.

dZ30 

d215 

d200 

d!90 

d!70

141 

110 

83 

72 

70

74 

66 

66 

58 

56

62 

68 

61 

62 

59

55 

56 

52 

53 

53

55 

61 

55 

49 

43 

41

Apr.

43 

47 

48 

52 

64

54 

41 

36 

40 

41

47 

43 

37 

35 

48

66 

59 

68 

68 

47

59 

71 

78 

83 

83

83 

61 

61 

58 

55

Secondroot-days

1,458 

1,602 

1,252

67,891.6

1,215 

3,130 

2,686 

1,676 

4,454 

5,495 

4,884 

305.4 

518.1

28,675.5

May

49 

41 

38 

36 

34

40 

42 

44 

56 

53

44 

38 

32 

30 

29

32 

40 

59 

122 

112

102 

136 

246 

322 

334

360 

364 

360 

378 

387 

494

Maximum

94 

58 

74

1,690

246 

230 

83 

494 

593 

1,240 

24 

137

1,240

June

593 

536 

468 

369 

326

326 

326 

290 

229 

207

197 

174 

171 

131 

122

108 

100 

90 

81 

83

81 

72 

66 

61 

59

55 

52 

49 

41 

32

Minimum

July

28 

26 

25 

26 

28

30 

110 

1,240 

967 

f306

171 

165 

122 

94 ' 81

78 

79 

70 

136 

440

182 

100 

65 

52 

40

34 

32 

31 

35 

54 

37

17 

49

6.1

41 

35 

29 

32 

25 

0 

0

0

Aug.

24 

21 

19 

19 

15

14 

12 

11 

9.9 

9.5

10 

10 

11 

21 

19

15 

13 

9.5 

8.3 

7.6

6.2 

4.7 

3.2 

2.7 

2.4

2.2 

2.5 

2.0 

.7 

0 

0

Mean

47.0 

53.4 

40.4

1S6

39.2 

112 

86.6 

55.9 

144 

183 

158 

9.85 

17.3

78.6

Sept.

0 

0 

0 

0 

0

0 

0 

0 

13 

28

30 

36 

18 

14 

9.0

7.2 

5.2 

4.5 

4.2 

18

137 

58 

31 

20 

18

16 

14 

14 

12

11

Runoff In 

aore-feet

2,890 

3,180 

2,480

134,700

2,410 

6,210 

5,330 

3,320 

8,330 

10,900 

9,690 

606 

1,030

56,680

Peak discharge (base f 1,800 sec. -ft.}. July 8 f3:45 a.m.) 3.240 sec. -ft.

iter discharge measurement made on this day. 

d Doubtful gage-height record; discharge computed on basis of records for station near Castle Dale. 

f Discharge computed on basis of partly estimated gage heights. 

Note. Stage-discharge relation affected by ice Dec. 12 to Feb. 17.
298 GREEN RIVER BASIN

Cottonwood Creek near Orangeville, Utah

Location.--Water-stage recorder, lat. 39°15'55", long. 111°07<40", In SW£ sec. 10, T. 18 

t>., fi. 7 E., 2 miles upstream from Grimes Wash and 5 miles northwest of Orangeville.

Drainage area. 200 square miles.

Records available. May 1909 to September 1927 (fragmentary), May 1932 to September 1950.

Average discharge.--34 years (1910-20, 1921-27, 1932-50), 103 second-feet.

Extremes.--Maximum discharge during year, 850 second-feet May 30 (gage height, 4.35 feet); 

minimum recorded, 14 second-feet Mar. 13, but may have been less during periods of ice 

effect or no gage-height record.

1909-27, 1932-50: Maximum discharge, 2,870 second-feet Aug. 9, 1941 (gage height, 

6.38 feet), from rating curve extended above 780 second-feet; minimum observed, 4 second-feet Jan. 24, 1933 (discharge measurement), but may have been less during periods 

of ice effect.

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

which are fair. Small 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.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7 

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.

28 

27 

27 

27 

27

27 

27 

29 

30 

28

27 

28 

29 

29 

28

27 

28 

30 

32. 

30

30 

27 

29 

29 

28

28 

28 

28 

28 

27 

27

Nov.

27 

27 

26 

26

26

26 

26 

26 

26 

27

26 

26 

26 

26 

27

26 

*26 

26 

26 

26

26 

26 

26 

27 

26

26 

26 

26 

26 

24

Dec.

24 

24 

24 

24 

25

26 

27 

26 

27 

26

' 25 

25 

24 

24 

24

*24 

25 

26 

26 

24

22 

21 

20 

21 

22

21 

20 

20 

20 

21 

21

Jan.

(") 

21

Feb.

1"

(*) 

22

24

Month

Oeto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

25 

27 

30 

32 

30

28 

*27 

24 

25 

26

25 

24 

26 

27 

24

25 

28 

30 

26 

26

25 

26 

24 

26 

26

24 

24 

24 

24 

27 

32

Apr.

37 

43 

36 

29 

32

35 

40 

43 

37 

33

37 

43 

48 

48 

43

42 

51 

57 

56 

70

96 

113 

125 

118 

103

113 

123 

123 

98 

88

Secondfoot-days

874 

783 

729

41,896

651 

627 

817 

1,960 

7,427 

7,313 

2,395 

1,291 

873

25,740

May

86 

78 

88 

90 

78

84 

80 

71 

68 

66

74 

78 

86 

103 

123

158 

200 

206 

216 

240

296 

390 

449 

458 

490

476 

495 

510 

500 

550 

540

Maximum

32 

27 

27

731

32 

125 

550 

481 

138 

51 

32

550

June

481 

453 

412 

390 

395

395 

370 

303 

262 

258

265 

269 

254 

247 

230

220 

206 

194 

184 

175

169 

160 

155 

146 

136

130 

123 

115 

113 

103

July

9a 

96 

110 

98 

90

86 

113 

138 

103 

94

86 

84 

82 

78 

78

74 

73 

73 

68 

63

59

57 

56 

60 

56

57 

57 

55 

54 

.51 

48

Minimum

27 

24 

20

-

24 

29 

66 

103 

48 

32 

25

-

Aug.

5C 

50 

50 

50 

50

48 

47 

46 

45 

48

51 

51 

47 

46 

44

43 

40 

39 

39 

39

37 

35 

35 

34 

33

32 

32 

33 

33 

32 

32

Mean

28.2 

26.1 

23.5

115

21.0 

22.4 

26.4 

65.3 

240 

244 

77.3 

41.6 

29.1

70.5

Sept.

32 

32 

31 

30 

30

30 

31 

32 

31 

31

31 

31 

30 

30 

29

29 

29 

28 

32 

30

28 

27 

27 

27 

27

26 

26 

26 

25 

25

Runoff in 

acre-feet

1,730 

1,550 

1,450

83,100

1,290 

1,240 

1,620 

3,890 

14,730 

14,500 

4,750 

2,560 

1,730

51,040

Peak discharge (base, 90O see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 2-6, 12-27. No gage-height record Dec. 28 to 

Ka~. 7 (stage-discharge relation affected by ice most of period); discharge computed on basis of 3 

discharge measurements, weather records, and records for nearby stations.
GREEN RIVER BASIN 299

Cottonwood Creek near Castle Dale, Utah

Location. Water-stage recorder, lat. 39°10', long. 110°56 I , in sec. 8, T. 19 S,, R. 9 E., 

naif a mile upstream from Rock Canyon and 6 miles east of Castle Dale.

Drainage area. 261 square miles.

Records available.--July 1947 to September 1950.

Extremes.--Maximum discharge during year, 473 second-feet June 1 {gage height, 3.40 feet); 

minimum, 1.0 second-foot Sept. 18.

1947-50: Maximum discharge, 1,600 second-feet Aug. 22, 1947 (gage height, 6.14 feet), 

by slope-area method and velocity-area studies; minimum, 1.0 second-foot Sept. 18, 19, 

21, 1948, Sept. 18, 1950.

Remarks.--Records good except those for periods of ice effect, 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.

Discharge, in second-feet, water year October 1949 to September 195O

Day

' 12 

3 

4 

5

6 

7 

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.

9.8 

8.6 

8.6 

8.6 

8.0

7.8 

7.8 

9.5 

12 

11

11 

11 

11 

11 

11

10 

11 

12 

21 

16

13 

12 

12 

13 

14

13 

14 

15 

15 

14 

15

Nov.

14 

14 

14 

14

14

13 

13 

13 

13 

14

14 

11

11 

11 

13

*13 

13 

13 

13 

13

12 

12 

 11 

12

11

11 

11 

11 

11

10

Dec.

10 

10 

10 

10 

11

11 

12 

9.5 

9.2 

9.8

9.5

(*) 

8.5

Jan.

9.0

10

C)

11

14

Feb.

1"

(*) 

19

L 22 

25

Month

Octo 

Move

Dece

Ca

Janu 

Febr 

Mare 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 19 4£

ter year 1949-5O .......................

Mar.

24 

25 

26 

28 

29

25 

21 

*17 

17 

12

9.8 

9.5 

8.3 

8.9 

8.6

8.3 

8.0 

8.0 

7.5 

7.8

7.0 

7.2 

6.5 

6.5 

7.5

7.2 

6.8 

5.8 

5.1 

5.1 

4.9

Apr.

5.1 

5.5 

6.8 

6.8 

6.2

6.2 

7.8 

6.0 

6.5 

6.5

6.8 

5.5 

6.0 

6.8 

7.2

6.2 

7-5 

10 

22 

30

41 

26 

21 

23 

18

20 

18 

14 

11 

6.8

Secondfoot-days

366.7 

373 

282.0

22,930

371.0 

570 

378.3 

370.2 

2,853.9 

2,532 

711 

191.1 

181.2

9,180.4

May

6.2 

5.1 

5.5 

5.5 

5.8

11 

11 

10 

8.3

8.3 

8.6 

8.3 

11 

15

23 

45 

46 

52 

58

84 

154 

219 

239 

255

229 

234 

255 

239 

245 

347

Maximum

21 

14 

12

606

29 

41 

347 

347 

79 

14 

22

347

June

347 

287 

216 

181 

168

172 

166 

117 

96 

79

76 

73 

50 

46 

40

36 

35 

38 

36 

31

31 

32 

30 

28 

26

26 

22 

15 

16 

16

July

16 

20 

21

20 

18

15 

29 

79 

52 

29

35 

26 

24 

24 

25

20 

18 

27 

29 

26

17 

14 

15 

15 

17

13 

12 

12 

18 

13 

12

Minimum

7.8 

10

-

4.9 

5.1 

5.1 

15 

12 

1.8 

1.5

-

Aug.

12 

9.2 

8.6 

8.0 

6.8

6.8 

6.8 

5.3 

3.7 

5.3

10 

14 

12 

11 

8.6

7.2 

6.5 

5.1 

2.2 

2.0

2.9 

1.8 

4.1 

4.1 

3.4

4.1 

2.9 

3.4 

3.9 

4.9 

4.5

Mean

11.8 

12.4 

9.10

62.8

12.0 

20.4 

12.2 

12.3 

92.1 

84.4 

22.9 

6.16 

6.04

25.2

Sept.

4.1 

2.9 

3.2 

2.6 

2.6

3.2 

3.4 

6.2 

6.2 

6.2

3.7 

2.9 

3.9 

5.5 

5.3

4.7 

4.3 

1.5 

15 

22

8.8 

7.5 

7.5 

7.5 

7.2

7.0 

6.8 

6.5 

6.5 

6.5

Runoff in 

acre-feet

727 

740 

559

45,480

736 

1,130 

750 

734 

5,660 

5,020 

1,410 

379 

359

18,200

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 3-6, Dec. 12 to Mar. 4.
300 GREEN RIVER BASIN 

Perron Creek (upper station) near Perron, Utah

Location.--Water-stage recorder, lat. 39°05'55", long. 111°11'05", In NW£ sec. 7, T. 20 

a., K. 7 E. Salt Lake meridian, about 300 feet upstream from Upper South and Upper 

North Canal diversions, and 3 miles west of Perron.

Drainage area. 157 square miles.

Records avallable.--December 1947 to September 1950. May 1911 to September 1923 at site 

J-s miles upstream (drainage area, 140 square miles), records equivalent. Records for 

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.

Extremes. Maximum discharge during year, 561 second-feet July 7 (gage height, 4.13 feet); 

minimum, 2.9 second-feet Apr. 10.

1947-50: Maximum discharge, 1,300 second-feet Aug. 4, 1948 (gage height, 5.70 

feet); minimum recorded, 2.9 second-feet Nov. 14, 1948, Apr. 10, 1950, but may have 

been less during periods of ice effect.

Remarks.--Records good except those for periods of ice effect, which are fair, 

diversions above station for irrigation. Many diversions below.

Small

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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 

19 

19 

19 

18

17 

16 

19 

20 

19

19 

21 

21 

20 

18

17 

17 

18 

20 

17

18 

14 

15 

15 

15

14 

14 

14 

14 

14 

13

Nov.

13 

12 

12 

12 

12

12 

12 

14 

13 

14

11 

12 

13 

12

*12

12

12 

12 

12 

11

11 

11 

11 

14 

12

12 

11 

12 

12 

8.9

Dec.

10 

10 

10 

blO 

bll

bll 

12 

11 

11 

11

blO 

bS.O

(*) 

b7.0

Jan.

b6.5

7.2

6.9 

6.5 

6.5 

6.5 

6.5

6.9 

6.9 

6.9 

b6. 6 

b6.5

b6. 4 

b7.5 

8.9 

6.5 

6.5 

6.5

Feb.

7.8 

6.9 

7.2 

6.9 

6.2

6.2 

6.2 

blO 

*6.5 

b7.0

7.2 

9.5 

7.2 

6.9 

7.2

8.9 

10 

b!5 

b!6 

10

12 

14 

13 

12 

11

15 

15 

14

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

M» v

June 

July 

Augu 

Sept

Wa

lendar year 1949 *

ter year 1949-50 .......................

Mar.

12 

11 

11 

11 

14

15 

11 

12 

*15 

12

12 

13 

22 

14

11

10 

11 

12 

11

11

11 

12 

11 

13 

12

11 

9.5 

10 

11 

12 

12

Apr.

13 

17 

26 

19 

13

25 

38 

36 

22 

6.5

8.9 

19 

28 

26 

12

17 

39 

50 

45 

59

82 

92 

102 

88 

64

75 

88 

87 

58

51

Secondfoot-days

533 

359.9 

258.0

31,679.9

207.2 

274.8 

375.5 

1,306.4 

5,118 

5,063 

2,618 

1,163 

506

17,782.8

May

50 

53 

72 

68

57

62 

57 

50 

50 

53

66 

75 

90 

115 

149

179 

199 

179 

186 

199

223 

258 

289 

286 

292

270 

280 

286 

280 

319 

326

Maximum

21 

14 

12

675

16 

22 

102 

326 

333 

138 

75 

37

333

June

333 

292 

255 

243 

243

243 

207 

169 

160 

172

186 

1S1 

169 

172 

167

164 

158 

151 

144 

142

138

132 

126 

120

111

107 

102 

97 

92 

87

Minimum

July

83 

80 

92 

79 

74

71 

115 

138 

100 

92

83 

77 

69 

63 

60

62 

97 

115 

104 

97

92 

90 

79 

44 

50

92 

92 

88 

83 

80 

77

13 

8.9

-

6.2 

9.5 

6.5 

50 

87 

44 

15 

11

-

Aug.

75 

71 

68 

64 

69

64 

60 

56 

53 

53

53 

54 

46 

42 

34

29 

26 

22 

22 

20

19 

19 

19 

17 

17

16 

15 

15 

15

15 

15

Mean

17.2 

12.0 

8.32

86.8

6.6S 

9.81 

12.1 

43.5 

165 

169 

84.5 

37.5 

16.9

48.7

Sept.

15 

15 

15 

14 

14

14 

19 

21 

20 

22

18 

18 

19 

15 

15

15 

15 

14 

37 

21

18 

17 

16 

16 

16

15 

14 

15 

12 

11

Runoff In 

acre -feet

1,060

714 

512

62,830

411 

545 

745 

2,590 

10,150 

10,000 

5,190 

2,310 

1,000

35,230

Peak discharge (base, 600 see.-ft.). No peak above base. 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 301

Perron Creek near Castle Dale, Utah

Location.--Water-stage recorder, lat. 39°06'25", long. 111°01'20", In SE^ sec. 4, T. 20 

3., R. 8 E. Salt Lake meridian, 6 miles east of Perron and 7 miles south of Castle 

Dale.

Drainage area.--210 square miles.

Records available.--December 1947 to September 1950. June 1911 to September 1914 at site 

Lj miles downstream from present site.

Extremes.--Maximum discharge during year, 305 second-feet July 19 (gage height, 2.30 feet); 

minimum daily, 0.1 second-foot Aug. 30 to Sept. 6.

1947-50: Maximum discharge, 770 second-feet June 18, 1949 (gage height, 3.90 feet), 

by slope-area method; minimum daily, that of Aug. 30 to Sept. 6, 1950.

Remarks.--Records good except those for periods of Ice effect or doubtful or no gageheight record, which are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

9.0 

8.0 

8.0 

8.0 

7.5

7.5 

7.5 

8.0 

9.5 

8.5

9.0 

9.5 

9.5 

9.5 

9.0

8.5 

9.0 

9.4

16 

11

9.4 

9.1 

8.3 

8.3 

8.3

8.3 

8.3 

8.3 

8.7 

8.7 

8.3

Nov.

7.9 

7.9 

7.9 

7.2 

7.2

7.2 

6.8 

6.1 

6.4

7.2

8.3 

7.2 

7.2 

8.3 

*9.1

9.1 

9.1 

9.1 

9.1 

9.1

9.1 

9.4 

8.7 

9. '4 

9.4

9.1 

9.1 

9.1 

9.1 

9.1

Dec.

8.7 

8.7 

8.7 

9.1 

9.8

10 

10 

10 

11 

12

9.8 

0

7.0

Jan.

7.5

L 8.0

1 < > 

L 9.0

9.5

Feb.

L 9.5 

(*)

. 10

Month

Octo 

Nove 

Dece

Ca

janu 

Febn 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1"

11 

7.5 

10 

*11 

11

10 

8.3 

5.8 

7.2 

9.8

7.5 

8.3 

9.1 

9.4 

9.8

7.5 

9.1 

7.5 

9.8 

10

9.1 

8.3 

7.2 

7.5 

8.7 

9.8

Apr.

13 

16 

25 

10 

9.8

11 

16 

16 

14 

9.8

7.0 

12 

20 

18 

10

15 

25 

30 

26 

25

30 

35 

40 

30 

20

22 

20 

15 

10 

8.0

Secondfoot-days

275.9 

248.9 

247.8

15,788.4

274.5 

277.5 

280.2 

558.6 

1,200.9 

1,209.3 

757.7 

64.5 

60.1

5,455.9

May

6.0 

5.0 

4.5 

4.4 

5.0

6.4 

8.7 

5.8 

5.0 

2.5

1.5 

1.2 

1.5 

1.6 

2.8

12 

19 

18 

14 

16

30 

76 

108 

101 

114

80 

80 

98 

99 

106 

168

Maximum

16 

9.4 

12

420

40 

168 

161 

128 

5.8 

16

168

June

161 

142 

96 

77 

79

68 

63 

'38 50 

33

30 

36 

34 

29 

31

30 

23 

22 

28 

25

20 

13 

13 

11 

12

11 

9.1 

9.4 

7.9 

7.9

Minimum

July

7.9 

9.1 

8.3 

8.3 

9.4

10 

46 

128 

52 

41

38 

37 

31 

27 

25

15 

16 

27 

37 

29

22 

18 

15 

9.4

12

22 

16 

14 

10 

9.8 

7.5

7.5 

6.1

2.5

5.8 

7.0 

1.2 

7.9 

7.5 

.1 

.1

.1

Aug.

5.8 

4.4 

3.4 

2.3 

2.3

2.1 

2.1 

2.1 

2.1 

2.5

3.2 

3.2 

2.8 

2.1 

1.9

1.9 

1.7 

1.6 

1.6 

1.6

1.6 

1.6 

1.6 

1.6 

1.6

1.6 

1.5 

1.5 

1.0 

.1 

.1

Mean

8.90 

8.30 

8.00

43.3

8.85 

9.91 

9.04 

18.6 

38.7 

40.3 

24.4 

2.08 

2.00

14.9

Sept.

0.1 

.1 

.1 

.1 

.1

.1 

.2 

.2 

.4 

.8

.3 

.2 

.2 

.2 

.2

.2

.2 

.2 

16 

13

3.6 

3.0 

3.0 

3.2 

2.8

2.6 

2.6 

2.8 

1.9 

1.7

Runoff in 

acre-feet

547 

494 

492

31,320

544 

550 

556 

1,110 

2,380 

2,400 

1,500 

128 

119

10,820

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 1-17, Apr. 11 to May 3: discharge computed on basis of records 

for nearby stations. Doubtful gage-height record July 20 to Aug. 3; discharge computed on basis of 

available gage-height record and records for nearby stations, stage-discharge relation affected by 

ice Dec. 12 to Mar. 5 (no gage-height record Jan. 29 to Feb. 9).
302 DIRTY DEVIL RIVER BASIN

Fremont River near Fremont, Utah

Location. Water-stage recorder, lat. 38°29', long. 111°35', in NE£ sec. 9, T. 27 S., R.

 3 E., 800 feet downstream from road bridge, about if miles downstream from East Fork,

and 2| miles northeast of Fremont. 

Drainage area. 205 square miles. 

Records available. July 1949 to September 1950. March 1939 to September 1942 in files

of State engineer's office. 

Extremes. 1949: Maximum discharge during period July to September, 133 second-feet July

 30 (gage height, 2.10 feet); minimum discharge, 24 second-feet Sept. 25.

1949-50: Maximum discharge during water year, 108 second-feet May 8 (gage height,

1.98 feet,); minimum discharge, 5.4 second-feet Dec. 5. 

Remarks. Records good except those for periods of Ice effect, which are fair. Several

aiversions below station for irrigation; none above. Flow regulated by Fish Lake and

Johnson and Forsythe Reservoirs.

Discharge, In second-feet, 1949-50 

1949

Day

1

2

3

4

5

6

7

8

July

120

127

125

122

120

119

117

116

Aug.

128

127

125

123

122

122

122

120

Sept.

70

70

68

62

62

62

62

62

Day

9

10

11

12

13

14

15

16

July

119

117

114

116

114

111

111

110

Aug.

 123

123

123

120

119

117

114

111

Sept.

64

56

60

59

59

58

58

56

Day

17

18

19

20

21

2Z

23

24

July

108

106

114

120

120

120

120

120

Aug.

102

95

83

74

74

74

75

75

Sept.

56

55

54

53

52

51

49

49

Day

25

26

27

28

29

30

31

July

117

117

116

114

117

131

130

Aug.

74

74

73

72

72

71

7O

Sept.

45

47

47

48

46

44

-

Day

1

2

3

4

5

6

7

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.

42

42

41

39

38

38

37

37

40

42

34

42

42

42

42

42

41

42

42

42

42

41

42

42

42

42

42

41

42

40

41

Nov.

39

31

12

9.3

8.9

8.9

8,6

8.9

8.9

9.3

8.9

8.6

8.9

8.9

8.9

8.9

8.9

S.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

8.9

»8.9

8.9

-

Dec

8.9

8.6

8.6

8.6

8.6

8.6

8.6

8.6

8.9

8.2

b8.0

bS.O

b8.2

b8.6

b9.0

9.3

b9.0

9.3

9.6

9.6

*b9.0

b9.0

b9.0

8.9

b9.0

b9.0

b9.0

9.3

b9.0

8.9

b9.0

Jan.

9.3

9.3

b9.2

b9.0

b8.5

b8\5

b8.8

b9.0

 9.6

blO

10

10

10

10

blO

blO

10

*10

10

10

10

1011

1111

bll

fall

11

11

11

11

Feb.

bll

bll

bll

bll

bll

11

10

blO

blO

blO

10

blO

blO

*10

10

10

10

10

1111

11

1011

11

11

12

13

12

_

-

Mar.

12

12

12

12

12

11

bll

11

11

11

11

b!2

b!2

12

*11

11

11

11

11

11

12

13

15

17

19

19

20

20

20

21

22

Apr.

22

25

29

28

26

26

28

31

31

27

26

28

30

32

30

28

28

31

30

28

30

32

32

33

71

70

71

70

72

78

-

May

82

86

86

87

86

86

86

99

98

88

83

86

84

86

84

83

84

84

83

83

83

84

86

86

86

86

87

87

91

94

94

June

94

94

96

95

94

94

94

94

94

95

94

94

94

94

94

94

92

94

92

92

90

88

88

88

90

88

88

87

87

86

-

July

82

88

88

88

88

90

90

87

88

87

83

83

82

82

83

82

84

84

79

79

78

78

77

77

75

75

74

72

71

71

70

Aug.

68

67

66

66

65

64

62

60

58

57

59

53

50

49

50

48

46

44

43

43

42

42

42

42

40

39

39

38

37

37

37

Sept.

36

37

36

34

31

31

30

32

33

35

35

34

35

34

33

32

31

30

30

31

31

31

31

31

31

31

31

30

30

30

-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Monthly discharge, in second-feet, 1949-50

Month

September. ..................................

The period. .............. .................

December. ...................................

Calendar year .......................

March. ......................................

May. ........................................

September. ..................................

Water year 1949-50 .......................

Secondfoot-days

1.C84

-

273.9

_

310.2

426

2,688

2,758

2,514

1,553

967

14,498.6

Maximum

70

- '

9.6

_

11

22

99

96

68

37

99

Minimus

44

-

34

8.0

-

8.5

11

82

86

70

37

30

8.0

Mean

56.1

-

8.84

_

91.9

32.2

39.7

Runoff in 

acre-feet

3,340

16,720

543

_

1,920

28,770
DIRTY DEVIL RIVER BASIN 303

Fremont River near Bicknell, Utah

Location. Water-stage recorder, lat. 38°18', long. 111 0 31 I , in NE£ sec. 7, T. 29 S. , R. 

4 &., 600 feet upstream from highway bridge, 1,500 feet downstream from Torrey Canal 

and Mill ditch, 1 mile downstream from Government Creek, and 3 miles southeast of 

Bicknell.

Drainage area.--776 square miles.

Records available --May 1909 to December 1912 {published as Fremont River near Thurber), 

Uctober 1937 to September 1950 {1944-46, fragmentary).

Average discharge.--13 years {1909-12, 1937-43, 1946-50), 94.6 second-feet.

Extremes.--Maximum discharge during year, 250 second-feet Jan. 15 (gage height, 3.11 feet); 

minimum daily, 62 second-feet Aug. 9.

1909-12, 1937-50: Maximum discharge, 1,200 second-feet about Apr. 5, 1942 {gage 

height, 5.8 feet, present site, from floodmarks), from rating curve extended above 700 

second-feet; minimum observed, 18 second-feet June 2, 4, 13-15, 17, 18, 1912.

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

indefinite stage-discharge relation, 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. Flow affected by Fish Lake and Johnson and 

Forsythe Reservoirs.

Discharge, in second-feet, water year October 1949 to September 1950

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.

89 

85 

85 

86 

84

81 

83 

89 

95 

93

90 

87 

89 

87 

90

92 

93 

94 

99 

98

102 

96 

96 

96 

96

94 

93 

93 

95 

93 

95

Nov.

98 

97 

95 

96 

95

91 

95 

97 

98 

100

100 

98 

103 

104 

103

98 

100 

101 

100 

100

99 

99 

99 

99 

99

99 

99 

99 

*97 

97

Dec.

e99 

e99 

e98 

e98 

e96

e96 

e97 

e99 

e99 

e99

98 

102 

98 

98 

98

alOO 

alOO 

alOO 

alOO 

alOO

*90 

85 

80 

75 

75

78 

85 

85 

80 

80 

80

Jan.

78 

78 

76 

74 

75

75 

80 

85 

90 

99

101 

102 

101 

102 

99

99 

107 

*114 

112 

112

116 

121 

131 

128 

117

90 

90 

88 

85 

85 

88

Feb.

88 

8S 

96 

99 

105

128 

129 

112 

99 

101

105 

99 

94 

*109 

112

114 

116 

117 

117 

124

119 

114 

119 

119 

119

121 

126 

119

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-50 .......................

Mar.

112 

112 

94 

93 

96

89 

97 

92 

90 

90

88 

95 

105 

113 

118

114 

114 

108 

110 

110

106 

104 

102 

104 

108

104 

102 

104 

104 

106 

105

Apr.

101 

103 

99 

97 

92

88 

86 

88 

84 

80

78 

77 

76 

75 

77

75 

75 

77 

79 

78

84 

79 

75 

73 

73

72 

73 

72 

72 

73

Secondfoot-days

2,838 

2,955 

2,867

33,829

2,998 

3,108 

3,189 

2,431 

2,238 

2,140 

2,280 

2,115 

2,300

31,459

May

72 

71 

70 

74 

77

78 

79 

72 

74 

71

69 

70 

72 

71 

72

73 

74 

73 

71 

69

70 

70 

72

74 

73

71 

70 

70 

71 

72 

73

Maximum

102 

104 

102

193

131 

129 

118 

103 

79 

76 

88 

88 

84

131

June

73 

71 

69 

70 

70

69 

70 

71 

73 

70

71 

71 

72 

72 

71

71 

73 

73 

74 

76

73 

72 

71 

64 

70

72 

74 

72 

72 

70

Minimum

July

70 

71 

72 

76 

81

82 

87 

82 

75 

80

80 

71 

66 

66 

64

66 

69 

88 

80 

71

71 

72 

72 

70 

71

71 

76 

75 

72 

68 

65

81 

91 

75

62

74 

88 

88 

72 

69 

64 

64 

62 

68

62

Aug.

65 

66 

67 

64 

64

64 

64 

63 

62 

64

72 

76 

88 

77 

72

70 

70 

70 

69 

68

65 

67 

66 

68 

69

68 

68 

68 

67 

67 

67

Mean

91.5 

98.5 

92.5

92.7

96.7 

111 

103 

81.0 

72.2 

71.3 

73.5 

68.2 

76.7

86.2

 Sept.

68 

69 

69 

70 

71

72 

79 

84 

80 

76

76 

73 

72 

77 

77

77 

77 

76 

78 

75

80 

82 

81 

79 

79

81 

80 

82 

81 

'9

Runoff in 

acre-feet

5,630 

5,860 

5,690

67,110

5,950 

6,160 

6,330 

4,820 

4,440 

4,240 

4,520 

4,200 

4,560

62,400

* Winter discharge measurement made on this day.

a Ho gage-height recordj discharge computed on basis of weather records and records for nearby 

streams.

e Stage-discharge relation Indefinite; discharge computed as explained in footnote a. 

Mote. Stage-discharge relation affected by ice Dec. 21 to Jan. 9, Jan. 27 to Feb. 1.
304 ESCALANTE RIVER BASIN

Escalante River near Escalante, Utah

Location.--Water-stage recorder, lat. 37°46 I , long. lll°34i, in NE£ sec. 9, T. 35 S., R. 

3TTT7 150 feet below Pine Creek and 2 miles northeast of Escalante.

Drainage area.--315 square miles.

Records available. August 1909 to April 1913. October 1942 to September 1950.

Average discharge.--11 years (1909-12, 1942-50), 18.1 second-feet.

Extremes.--Maximum discharge during year, 189 second-feet July 17 (gage height, 3.18 feet); 

minimum, 0.1 second-foot July 15.

1909-13, 1942-50: Maximum discharge, 2,790 second-feet Sept. 28, 1949 (gage height, 

7.34 feet) by slope-area method; minimum, 0.1 second-foot Aug. 20, 1946, July 15, 1950.

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

which are poor. Many diversions above station for irrigation.

Revisions (water years).--W 1149: 1943(M), 1944, 1945(M).

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

20 

10 

8.0 

7.0 

7.0

6.8 

6.8 

8.4 

8.8 

8.8

8.8 

9.2 

9.2 

9.2 

9.2

9.6

10 

24 

28 

13

10 

12 

12 

12 

12

13 

12 

12 

12 

11 

12

Nov.

12 

12

12 

12

12

12 

12 

12 

13 

12

10 

9.2 

10 

9.6 

9.6

9.2

10 

10 

10 

10

9.2 

9.2 

8.4 

10 

9.6

10 

9.6 

8.0 

7.7 

7.7

Dec.

7.7 

6.2 

6.8 

5.9 

6.2

6.8 

6.8 

8.4 

9.2 

11

12

12 

*7.7 

7.7 

6.8

10 

10 

14 

17 

15

13 

13 

14 

15 

16

15 

16 

17 

17 

19 

22

Jan.

20

(*) 

25

f 35 

32

Feb.

1"

34 

35 

32 

30 

30

30 

31 

30 

*33 

29

24 

20 

14

15

16

12 

9.2 

10 

13 

9.6

8.8 

11 

9.2

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Ha

Lendar year 1949

ter year 1949-50 .......................

Mar.

8.0 

8.0 

7.4 

8.0 

8.4

9.6 

6.2 

8.4 

8.8

7.7

10 

8.8 

8.0 

10 

10

8.8 

9.2 

8.4 

8.4 

8.4

8.0 

8.0 

8.0 

8.0 

10

8.0 

10 

10 

10 

9.6 

8.8

Apr.

9.6 

10 

10 

9.6 

10

9.2 

9.2 

10 

11 

6.5

4.8 

4.0 

3.8 

4.0 

3.6

3.2 

2.8 

4.8 

9.2 

18

30 

34 

37 

28 

13

17 

25 

20 

6.8 

6.8

Secondfoot-days

351.8 

308.0 

364.2

8,500.7

317 

645.8 

268.9 

370.9 

109.7 

61.0 

233.8 

79.9 

124.0

3,735.0

May

6.2 

4.6 

5.0 

4.2 

3.6

4.6 

3.2

3.8 

3.6 

3.0

2.8 

3.4 

3.4 

4.2 

4.8

4.6 

6.5 

4.2 

3.8 

3.0

2.6 

3.0 

3.0 

2.8 

2.4

2.2 

2.2 

2.6 

2.0 

2.2 

2.2

Maximum

28 

13 

22

194

35 

10 

37 

6.5 

4.2 

46 

4.2 

9.0

46

June

2.6 

2.2 

1.8 

2.2 

2.2

2.2 

1.6 

2.0 

1.8 

1.8

1.6 

1.8 

1.8 

2.2 

2.8

4.2 

3.2 

3.2 

3.4 

2.0

1.8 

1.6 

1.6 

1.4 

1.8

1.4 

1.4 

1.2 

1.2 

1.0

July

1.6 

3.0 

2.0 

2.0 

2.0

11 

25 

8.0 

4.4 

2.4

1.4 

.7 

.4 

.2 

.2

.9 

46 

39 

14 

8.0

2.4 

2.6 

2.2 

9.4 

5.3

8.9 

12 

8.8 

4.4 

3.0 

2.6

Minimum

6.8 

7.7 

5.9

4.6

8.8 

6.2 

2.8 

2.0 

1.0 

.2 

1.2 

2.6

.2

Aug.

3.2 

2.8 

2.2 

2.0 

1.6

2.2 

2.0 

1.2 

1.2 

2.2

3.6 

2.5 

2.0 

1.5 

1.5

1.5 

1.5 

1.5

2.0 

2.5

3.0 

3.0 

3.0 

4.2 

3.8

3.8 

3.6 

3.6 

3.6 

3.8 

3.8

Mean

11.3 

10.3 

11.7

23.3

26.4 

23.1 

8.67 

12.4 

3.54 

2.03 

7.54 

2.58 

4.13

10.2

Sept.

3.8 

3.4 

3.8 

3.6 

3.8

4.0 

7.0 

9.0 

5.0 

8.0

5.0 

4.0 

3.5 

3.4 

3.3

3.2 

3.5 

5.0 

4.0 

3.5

3.2 

3.2 

3.2

3.2 

6.2

3.8 

3.2 

3.0 

2.6 

2.6

Runoff In 

acre-feet

698 

611 

722

16,860

1,620 

1,280 

533 

736 

218 

121 

464 

158 

246

7,410

* Winter discharge measurement made on this day.

Note. No gage-height record Oct. 1-5, Aug. 12-23, Sept. 7-21; discharge computed on basis of 

1 discharge measurement, weather records, and records for nearby streams. Stage-discharge relation 

affected by ice Dec. 21 to FeD. 13 (no gage-height record most of periodj discharge computed on 

basis of 1 discharge measurement and weather records).
SAN JUAN RIVER BASIN 305

San Juan River near Pagosa Springs, Colo.

Location.--Water-stage recorder, lat. 37°22'05", long. 106°53'40", in SE£ sec. 12, T. 36 

N., R. 1 W., 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. Datum of gage is 

7,597.63 feet above mean sea level, datum of 1929.

Drainage area. 86.9 square miles.

Records available. May 1935 to September 1950.

Average discharge. 15 years, 131 second-feet.

Extremes. Maximum discharge during year, 463 second-feet May 24; maximum gage height, 

3.19 feet Feb. 10 (ice jam); minimum dally discharge, 12 second-feet Dec. 11.

1935-50: Maximum discharge, 2,070 second-feet May 12, 1941 (gage height, 4.84 

feet), from rating curve extended- above 1,300 second-feet; minimum dally, 5.5 secondfeet Dec. 20, 1939.

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

40 

35 

32 

29 

29

28 

27 

28 

33 

31

32 

32 

30 

29 

29

28 

30 

32 

32 

31

28 

27 

28 

26 

27

27 

25 

24 

24 

23 

21

Nov.

22 

*20

19 

19 

19

18 

18 

18 

18 

20

20 

18 

16 

17 

17

19 

20 

20 

21 

21

21 

20 

20 

20 

20

19

19 

19 

19 

19

Dec.

18

17 

17 

16 

14

*19 

21 

22 

22 

16

12 

13 

14 

15 

15

17 

17 

17 

17 

17

15 

14 

15 

16 

16

16 

14 

14 

15 

15 

15

Jan.

15 

15 

13 

13 

14

15 

15 

16 

16 

15

*15 

15 

15 

15 

15

15 

15 

15 

15 

15

15 

15 

15 

15 

15

14 

14 

14 

14 

14 

14

Feb.

13 

13 

13 

13 

14

14 

15 

15 

14 

. *13

15 

15 

13 

13 

14

14 

15 

16 

19 

21

22 

20 

19 

 19 

22

26 

29 

20

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949 ........

ter year 1949-50 .......................

Mar.

22 

22 

21 

21 

26

30 

25 

*22 

22 

22

20 

19 

16 

19 

19

20 

26 

33 

32 

33

34 

38 

40 

48 

50

42 

32 

29 

30 

35 

48

Apr.

79 

107 

135 

118 

116

*120 

122 

166 

145 

116

111 

122 

132 

145 

142

125 

120 

156 

180 

240

315 

370 

345 

360 

345

350 

285 

345 

340 

330

Secondfoot-days

897 

576 

501

51,725

456 

469 

896 

6,082 

9,210 

7,126 

2,168 

720 

729

29,830

May

325 

370 

370 

345 

240

207 

176 

166 

162 

170

176 

212 

216 

212 

250

270 

310 

345 

345 

315

340 

380 

414 

397 

386

386 

360 

330 

310 

360 

365

Maximum

40 

22 

22

894

16 

29 

50 

370 

414 

375 

96 

43 

70

414

June

370 

375 

370 

335 

275

315 

350 

310 

270 

265

305 

325 

285 

260 

255

250 

240 

225 

202 

184

162 

184 

159 

145 

138

130 

122 

113 

107 

100

July

Minimum

21 

16 

12

10

13 

13 

16 

79 

162 

100 

36 

14 

14

12

96 

90 

87 

83 

79

77 

74 

81 

87 

77

96 

88 

88 

77 

80

74 

70 

68 

78 

68

60 

58 

54 

50 

54

52 

50 

48 

46 

42 

36

Aug.

28 

28 

32 

28 

26

43 

40 

32 

28 

26

25 

25 

24 

22 

21

21 

22 

22 

21 

19

18 

17 

17 

17 

18

20 

18 

17 

16 

15 

14

Mean

28.9

19.2 

16.2

142

14.7 

16.8 

28.9 

203 

297 

238 

69. -9 

23.2 

24.3

81.7

Sept.

14 

14 

14 

14 

14

15 

19 

27 

22 

18

18 

16 

16 

15 

14

14 

14 

35 

48 

70

33 

39 

43 

32 

31

28 

25 

24 

22 

21

Runoff In 

acre-feet

1,780 

1,140 

994

102,600

904 

930 

1,780 

12,060 

18,270 

14,130 

4,300 

1,430 

1,450

59,170

Peak discharge (base, 600 sec. -ft.). No peak aljove base.

Winter discharge measurement made on this day. 

Note. Stage-discharge relation affected byiIce Nov. 13-15, Dec. 1 to Feb. 20, Mar. 13-15. No 

gage-height record July 13 to Aug. 1; discharge computed on basis of weather records and records 

for station at Pagosa Springs.
306 SAN JUAN RIVER BASIN

San Juan River at Pagosa Springs, Colo.

Location.--Water-stage recorder, lat. 37°15 I 55", long. 107°00'40", in Sj sec. 13, T. 35 

M., H. 2 W., under lower bridge, 200 feet from U. S. Highway 160 at town of Pagosa 

Springs. Datum of gage is 7,052.04 feet above mean sea level, datum of 1929.

Drainage area.--298 square miles.

Records available.--January 1911 to November 1914, May 1935 to September 1950.

Average discharge.--15 years (1935-50), 395 second-feet.

Extremes.--Maximum discharge during year, 1,670 second-feet June 1 (gage height, 5.67 

feet); minimum daily, 25 second-feet Dec. 11, 12.

1911-14, 1935-50: Maximum discharge, 5,790 second-feet May 13, 1941, from rating 

curve extended above 4,500 second-feet; maximum gage height, 7.97 feet June 19, 1949; 

minimum daily discharge, 19 second-feet Dec. 10, 1945.

Maximum stage known, 17.8 feet Oct. 5, 1911 (discharge^, about 25,000 second-feet).

Remarks.--Records excellent above 70 second-feet and good below except those for periods 

of no gage-height record, which are fair. Diversions above stations for irrigation.

Rating tables, water year 1949-5O (gage height, in feet,

and discharge, in second-feet)

(Shifting-control method used Oct. 12 to Jan. 14, 

Jan. 26 to Feb. 25)

Oct. 1 to June 16 June 17 to Sept. 30

108

132

220

375

520

4.7 

5.1 

5.5

770

1,080

1,480

2.6

2.7

2.8

3.3 142

3.4 163 

3.6 220

Note. Same as preceding table above 3.6 feet.

Discharge, in second-feet, water year October 1949 to September

3.2

3.3 

3.6 

4.0 

4.3

1950

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.

100 

85 

74 

70

70

71 

67 

67 

92 

86

85 

90 

90 

83 

81

78 

78 

86 

86 

76

78 

74 

81 

74 

71

74 

73 

71 

71 

67 

61

Nov.

63 

63 

63 

61 

61

60 

58 

56 

57 

58

63 

50 

56 

58 

61

61 

63 

61 

61 

61

61 

57 

56 

57 

57

54 

53 

54 

50 

49

Dec.

49 

47 

45 

41 

37

37 

42 

48 

50 

44

25 

25 

30 

37 

41

50 

50 

49 

50 

50

48 

42 

45 

49 

50

45 

45 

47 

48 

52 

48

Jan.

50 

50 

47 

43 

49

50 

49 

49 

52 

48

49 

49 

50 

50 

a50

a5O 

a53 

a5 5 

a58 

52

53 

56 

58 

61 

57

52 

50 

54 

56 

54 

53

Feb.

a51 

a49 

a51 

a57 

58

63 

64 

65 

57 

54

64 

60 

49 

56 

54

56 

60 

61 

67 

76

78 

65 

70 

74 

78

88 

106 

108

Month

Octo 

Nove

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194s 

ary

ter year 1949-50 .......................

Mar.

94 

90 

81 

85 

102

108 

85 

74 

81 

78

70 

67 

53 

65 

74

71 

88 

115 

108 

115

118 

130 

140 

172 

181

149 

115 

104 

104 

120 

166

Apr.

244 

393 

485 

430 

393

440 

475 

714 

592 

445

416 

440 

475 

510 

505

435 

416 

526 

640 

735

960 

1,090 

1,160 

1,170 

1,090

1,000 

944 

976 

1,010 

888

Secondfoot-days

2,410 

1,743 

1,366

187,752

1,607 

1,839 

3,203 

19,997 

27,009 

23,187 

5,746 

1,926 

1,766

91,799

May

896 

944 

976 

944 

714

580 

500 

470 

440 

470

510 

586 

556 

538 

604

664 

805 

880 

920 

872

1,040 

1,190 

1,230 

1,320 

1,350

1,210 

1,140 

1,070 

1,050 

1,190 

1,350

Maximum

100

63 

52

4,380

61 

108 

181 

1,170 

1,350 

1,440 

259 

99 

193

1,440

June

1,420 

1,440 

1,370 

1,120 

920

1,020 

1,160 

992 

912 

864

a850 

al,040 

a890 

a830 

a81O

a800 

756 

700 

640 

574

500 

574 

515 

450 

416

380 

355 

327 

295 

267

July

242 

220 

211 

199 

193

187 

174 

220 

255 

230

259 

227 

244 

202 

211

205 

185 

182 

205 

182

159 

159

148 

142 

150

146 

137 

128 

al26 

al!6 

a!O2

Minimum

61 

49 

25

25

43 

49 

53 

244 

440 

267 

102 

37 

32

25

Aug.

89 

87 

92 

86 

79

98 

99 

80 

74 

70

69 

67 

64 

59 

55

55 

55 

55 

52 

49

45 

43 

42 

40 

45

56 

58 

46 

42 

38 

37

Mean

77.7 

58.1 

44.1

514

51.8 

65.7 

103 

667 

871 

773 

185 

62.1 

58.9

252

Sept.

36 

a36 

a 35 

a35 

a35

a38 

40 

49 

50 

40

38 

36 

34 

32 

34

32 

32 

66 

101 

193

94 

86 

106 

84 

82

75 

69 

64 

61 

53

Runoff In 

acre-feet

4,780 

3,460 

3,710

372,400

3,190 

3,650 

6,350 

39,660 

53,570 

45,990 

11,400 

3,820 

3,500

182,100

Peak discharge (base. 1,510 sec.-ft.).--May 24 (11 p.m.) 1,590 sec.-ft.; June 1 (1O p.m.) 1,670 

sec.-ft.

a No gage-height record; discharge computed on basl" of recorded range in stage, weather records, 

and records for stations on nearby streams.
SAN JUAN RIVER BASIN 307

San Juan River at Rosa, N. Mex.

Location.--Water-stage recorder, lat. 37°00'20", long. 107°24'10", in sec. 20, T. 32 N., 

RTTTVf. , about 75 feet upstream from highway bridge, a quarter of a mile downstream from 

Piedra River, and 1 mile north of Rosa.

Drainage area.--1,990 square miles.

Records available.--October 1930 to September 1950 in reports of Geological Survey. Septemoer 19'dU to December 1931 in reports of State engineer.

Average discharge.--30 years (1920-50), 1,181 second-feet.

Extremes.--Maximum discharge during year, 3,400 second-feet Apr. 24 (gage height, 5.19 

reet); minimum daily, 59 second-feet Dec. 12.

1930-50: Maximum discharge, 17,200 second-feet Apr. 23, 1942 (gage height, 9.50 feet, 

present datum), from rating curve extended above 11,000 second-feet by logarithmic 

plotting; minimum daily, that of 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, 

wnicn are poor. Diversions above station for irrigation. Records of water temperatures and sediment loads for the water year 1950 are given in Water-Supply Paper 1189.

Discharge, in second-Test, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7 

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.

405 

314 

276 

251 

239

236 

224 

213 

222 

311

276 

276 

282 

285 

276

272 

272 

291 

321 

351

298 

288 

288 

317 

282

279 

282 

279 

279 

272 

263

Nov.

257 

260 

251 

251 

248

248 

236 

230 

230 

245

294 

263 

216 

236 

257

269 

266 

272 

266 

260

263 

254 

236 

219 

224

219 

210 

213

216 

216

Dec.

210 

210 

180 

a!75 

162

127 

141 

168 

224 

236

155 

*g59 

g93 

gl!4 

a!40

a!65 

al80 

a 200 

2OO 

2OO

180 

150 

*150 

150 

150

160 

160 

*170 

180 

200 

200

Jan.

200 

200 

ISO 

140 

100

100 

130 

160 

*190 

200

200 

*200 

200 

180 

180

*180 

200 

200 

200 

*200

210 

230 

*240 

240 

220

200 

160 

180 

200 

*2OO 

200

Feb.

180 

180 

*190 

220 

250

300 

440 

*489 

369 

308

257 

251 

242 

208 

224

224 

260 

304 

327 

351

409 

358 

304 

334 

365

390 

604 

662

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Peak discharge (base, 4,000 sec. -ft.). Ho

Mar.

567 

576 

514 

448 

444

523 

421 

355 

358 

365

348 

327 

272 

251 

294

311 

341 

444 

456 

460

468 

485 

518 

567 

652

581 

472 

409 

387 

405 

497

Apr.

755 

1,140 

1,5OO 

1,370 

1,170

1,330 

1,410 

1,790 

1,9OO 

1,540

1,290 

1,330 

1,410 

1,540 

1,540

1,450 

1,370 

1,500 

1,790 

2,000

2,420 

2,760 

2,920 

3,070 

2,920

2,690 

2,620 

2,550 

2 , 550 

2,290

Secondfoot-days

8,720 

7,325 

5,189

542,740

5,820 

9,000 

13,516 

55,915 

61,510 

49,716 

14,458 

4,191 

5,277

240,637

peak above

May

2,230 

2,290 

2,360 

2,290 

2,000

1,690 

1,450 

1,290 

1,170 

1,210

1,250 

1,370 

1,370 

1,330 

1,410

1,540 

1,790 

1,950 

2,060 

1,950

2,170 

2,420 

2,620 

2,690 

2,760

2,550 

2,480 

2,420 

2,290 

2,420 

2,690

Maximum

405 

294 

236

9,900

240 

662 

652 

3,070 

2,760 

2,920 

777 

230 

643

3,070

base.

June

2,920 

2,920 

2,920 

2,550 

2,170

2,060 

,360 

,170 

,950 

,900

,950 

,000 

,900 

,790 

,690

,640 

,590 

,450 

,370 

,210

,100 

,060 

,330 

1,030 

964

901 

811 

730 

652 

628

July

572 

536 

506 

480 

460

460 

448 

456 

586 

581

1 777 

652 

563 

609 

558

554 

497 

460 

493 

464

417 

383 

387 

362 

.348

355 

331 

301 

311 

291 

260

Minimum

213 

210 

59

59

100 

180 

251 

755 

1,170 

628 

260 

78 

60

59

Aug.

230 

208 

a200 

205 

199

197 

230 

208 

168 

a!60

alSO 

a 140 

a 140 

134 

127

116 

116 

114 

105 

98

90 

87 

83 

79 

78

81 

96 

-101 

90 

83 

78

Mean

281 

244 

167

1,487

188 

321 

436 

1,864 

1,984 

1,657 

466 

135 

176

659

Sept.

h71 

a 70 

a 65 

a 60 

60

63 

65 

105 

98 

108

98

96 

94 

87 

83

81

82 

105 

227 

643

436 

304 

327 

351 

341

288

254 

224 

205 

186

Runoff in 

acre-feet

17,300 

14,530 

10,290

1,077,000

11,540 

17,850 

26,810 

L10,900 

122,000 

98,610 

28,680 

8,310 

10,470

477,300

Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of recorder trace, discharge measurement, 

weather records and records for nearby stations.

g Computed from graph based on staff-gage readings.

h Computed from staff-gage reading.

Note. Stage-discharge relation affected by ice Dec. 19 to Feb. 6.
308 SAN JUAN RIVSR BASIN

San Juan River near BlancQ,, N. Mex.

Location.--Water-stage recorder, lat. 36 0 43'50", long. 107°48'50", In NE£ see. 18, T. 29 

N., K. 9 W., half a mile upstream from highway bridge, 1 mile upstream from Canyon 

Largo, and lj miles east of Blanco.

Drainage area. 3,560 square miles.

Records available.--December 1908 to October 1910 (gage heights only January to October 

.L91U) ana October 1930 to September 1950 in reports of Geological Survey. December 1908 

to December 1909 and June 1927 to December 1931 in reports of State engineer.

Average discharge.--22 years (1928-50), 1,469 second-feet.

Extremes. Maximum discharge during-year, 3,500 second-feet Sept. 7 (gage height, 4.22 

reet); minimum daily, 100 second-feet Dec. 13, 14.

1930-50: Maximum discharge, 23,300 second-feet May 14, 1,941 (gage height, 8.46 feet); 

minimum daily, 17 second-feet Aug. 18, 24, 25, 1939. 

Maximum stage known, 20 feet Oct. 5 or 6, 1911.

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

which are poor. Diversions above station for irrigation. Records of chemical analyses, 

water temperatures, and sediment loads for the water year 1950 are given in Water-Supply 

Paper 1189.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

630 

490 

442 

417 

393

366 

352 

341 

352 

417

490 

454 

454 

459 

446

417 

421 

417 

442 

472

472 

413 

409 

430 

401

348 

341 

341 

331 

317 

314

Nov.

303 

287 

290 

284 

274

262 

253 

256 

265 

259

290 

324 

284 

250 

262

259 

253 

247 

244 

250

247 

247 

241 

232 

224

232 

224

216 

210 

207

Dec.

*202 

194 

182 

160 

138

128 

130 

*b!40 

b!65 

b200

b!90 

b!05 

blOO 

blOO 

*b!20

b!50 

blSO 

b200 

b215 

b230

b215 

*b!60 

b!60 

b!65 

bl85

b205 

b200 

b205 

*b215 

b225 

b230

Jan.

b240 

b250 

b260 

b215 

*b!90

b!45 

b!60 

b!75 

b205 

*b!95

b!95 

b!95 

b205 

b205 

b235

221 

230 

241 

*256 

262

221 

284 

303 

324 

324

303 

253 

238 

265 

265 

244

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

Feb.

244 

227 

230 

250 

281

324 

485 

700 

564 

430

393 

324 

287 

232 

241

244 

259 

334 

413 

442

499 

508 

438 

413 

450

485 

535 

874

lendar year 1949

ter year 1949.50 .......................

Peak discharge (base, 5,000 sec. -ft.). No

Mar.

793 

683 

722 

599 

550

579 

625 

485 

446 

463

446 

425 

405 

348 

341

374 

390 

425 

550

512

555 

53E 

574 

545 

584

678 

555 

442 

409 

390 

446

Apr.

594 

1,010 

1,410 

1,460 

1,280

1,240 

1,320 

1,460 

2,020 

1,750

1,320 

1,280 

1,410 

1,500 

1,550

1,550 

1,410 

1,360 

1,650 

1,910

2,260 

2,730 

3,020 

3,180 

3,020

2,730 

2,520 

2,460 

2,520 

2,390

Secondfoot-days

12,789 

7,676 

5,394

702,474

7,304 

11,106 

15,874 

55,314 

62,500 

53,506 

20,149 

7,107 

11,039

269,758

May

2,200 

2,200 

2,320 

2,320 

2,260

1,860 

1,550 

1,360 

1,280 

1,240

1,320 

1,410 

1,500 

1,460 

1,460

1,600 

1,750 

1,960 

2,020 

2,020

2,020 

2,390 

2,590 

2,660 

2,800

2,800 

2,520 

2,460 

2,320 

2,260 

2,590

Maximum

630 

324 

230

12,800

324 

874 

793 

3,180 

2,800 

2,950 

861 

366 

933

-3,180

June

2,800 

2,950 

2,880 

2,800 

2,390

2,080 

2,320 

2,390 

2,080 

1,960

1,960 

2,080 

2,080 

1,960 

1,800

1,750 

1,650 

1,600 

1,500 

1,460

1,280 

1,240 

1,500 

1,320 

1,120

1,040 

a950 

881 

830 

855

Minimum

July

763 

672 

769 

722 

711

722 

678 

678 

683

781

' 799 

861 

799 

751 

8800

a760 

8720 

8680 

8640 

683

635 

579 

651 

584 

517

512 

425 

417 

378 

386 

393

314 

256 

100

100

145 

227 

341 

594 

1,240 

830 

378 

172 

151

100

Aug.

366 

310 

250 

250 

262

278 

287 

300 

268 

232

224 

238 

235 

241 

224

210 

202 

207 

210 

213

205 

189 

177 

17.4 

172

174 

197 

213 

213 

194 

192

Mean

413 

256 

174

1,925

236 

397 

512 

1,844 

2,016 

1-, 784 

650 

229 

368

739

Sept.

179 

160 

156 

151 

151

153 

343 

a320 

a 300 

352

8300 

8280 

8260 

256 

253

250 

253 

265 

468 

849

933 

604 

560 

569 

672

540 

405 

374 

366 

317

Runoff In 

acre-feet

25,370 

15,230 

10,700

1,393,000

14,490 

22,030 

31,490 

109,700 

124,000 

106,100 

39,960 

14,100 

21,900

535,100

peak above base.

Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of weather records and records for stations at 

Rosa and at Farraington.

b Stage-discharge relation affected by Ice.
SAN JUAN RIVER BASIN 309

San Juan River at Farmington, N. Mex.

Location.--Water-stage recorder, lat. 36°43', long. 108°13', in SE£ sec. IV, T. 29 N., R. 

T3~~B7, 360 feet downstream from highway bridge, 4,000 feet downstream from Animas River, 

and 1 mile west of Farmington.

Drainage area.--7,340 square miles.

Records available.--June 1904 to September 1906, September 1912 to December 1914, and

uctooer 193U to September 1950 in reports of Geological Survey. September 1912 to July 

1918 and November 1921 to December 1931 in reports of State engineer.

Average discharge.--27 years (1922-25, 1926-50), 2,492 second-feet.

Extremes.--Maximum discharge during year, 6,340 second-feet June 2 (gage height, 4.30 

feetj; minimum daily, 236 second-feet Sept. 4.

1930-50: Maximum discharge, 32,800 second-feet Sept. 28, 1935 (gage height, 8.0 

feet, estimated), from rating curve extended above 18,000 second-feet; minimum daily, 

2V second-feet 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, 

which are poor. Diversions above station for irrigation.

Revisions. W 1119: Drainage area.

Discharge, in second-feet, water year October 1949 to September 950

Day

1 

2 

3 

4 

5

6 

7 

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.

922

767 

701 

640 

620

581 

545 

527 

554 

610

712 

712 

701 

723 

745

712 

712 

723 

789 

922

946 

866 

888 

899 

888

800 

767 

778 

756 

723 

670

Nov.

650 

630 

600 

590 

581

563 

563 

545 

545 

536

572 

600 

650 

a600 

545

581 

572 

545 

527 

509

492 

484 

492 

492 

476

484 

484 

492 

452 

460

Dec.

452 

444 

428 

413 

392

357 

364 

378 

*413 

452

500 

428 

406 

b445 

*b420

b430 

b470 

b470 

b480 

b480

*b470 

b440 

b400 

b380 

b400

b430 

b440 

b440 

b470 

b520 

*563

Jan.

554 

581 

554 

610 

545

484 

452 

500 

572 

600

572 

590 

 5V2 

545 

581

563 

600 

660 

690 

712

701 

680 

660 

680 

690

630 

630 

620 

680 

650 

572

Feb.

590 

536 

492 

527 

581

620 

789 

1,140 

1,130 

910

855 

778 

701 

620 

563

554 

545 

600 

734 

789

844 

a880 

a8 40 

701 

723

778 

767 

1,030

Month

Goto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

MAV

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1,190 

1,180 

1,130 

994 

855

811 

888 

833 

701 

670

680 

670 

640 

581 

509

554 

581 

610 

723 

800

712 

756 

767 

811 

866

1,110 

1,110 

958 

833 

778 

778

Apr.

844 

1,110 

1,700 

2,200 

2,100

1,930 

1,920 

2,010 

2,810 

2,650

2,060 

1,900 

2,000 

2,080 

2,290

2,380 

2,120 

2,050 

2,420 

2,810

3,260 

3,960 

4,390 

4,860 

4,860

4,390 

4,100 

3,960 

3,700 

3,700

Secondfoot-days

22,899 

16,312 

13,575

1,125,356

18,730 

20,617 

25,079 

82,564 

100,040 

107,830 

35,527 

10,134 

21,696

475,003

May

3,210 

3,160 

3,330 

3,500 

3,620

2,960 

2,490 

2,130 

1,920 

1,740

1,710 

1,770 

2,010 

2,100 

2,080

2,360 

2,610 

3,030 

3,190 

3,310

3,230 

3,960 

4,540 

4,700 

4,700

4,700 

4,390 

4,540 

4,390 

3,960 

4,700

Maximum

946 

650 

563

23,300

712 

1,140 

1,190 

4,860 

4,700 

5,940 

1,640 

554 

1,040

5,940

June

5,750 

5,940 

5,750 

5,560 

4,240

3,550 

4,100 

4,540 

3,830 

3,550

3/830 

4,100 

4,240 

4,100 

3,830

3,620 

3,620 

3,580 

3,280 

3,000

2,750 

2,710 

3,120 

2,750 

2,440

2,340 

2,180 

1,980 

1,840 

1,710

Ju y

1, !40 

1, 130 

1, 590 

1, >20 

1, '40

1, '20 

1, ,50 

1', 150 

1, 120 

1, 120

1, 190 

1, 190

i, no

1, 120 

1, ,20

1, 120 

1, 140 

1, ,20 

1, 130 

1, .50

1,030 

B88 

(144 

(188 

(100

''34 

 '23 

(140 

(i50 

(120 

(140

Minimum

527 

452 

357

270

452 

492 

509 

844 

1,710 

1,710 

620 

245 

236

236

Aug.

554 

484 

378 

338 

350

371 

378 

392 

385 

344

- 338 

338 

344 

338 

344

320 

302 

290 

290 

290

290 

275 

245 

245 

245

245 

270 

296 

290 

285 

280

Mean

739 

544 

438

3,083

604 

736 

809 

2,752 

3,227 

3,594 

1,146 

327 

723

1,301

Sept.

270 

265 

245 

236 

265

255 

265 

a500 

aSOO 

a 450

a440 

420 

378 

371 

371

399 

406 

922 

1,080 

1,820

1,840 

1,380 

1,200 

1,180 

1,250

1,320 

1,100 

' 946 

322 

a 800

Runoff in 

acre-feet

45,420 

32,350 

26,930

2,232,000

37,150 

40,890 

49,740 

163,800 

198,400 

213,900 

70,470 

20,100 

43,030

942,200

Peak discharge (base^ 8,000 sec .-ft .J .--No peak above base.

Winter discharge measurement made on this day. 

a No g^ge-height record; discharge computed on basis of weather records and re 

near Blanco and at Ship Rock.

b Stage-discharge relation affected by ice.

ords for stations
310 SAN JUAN RIVER BASIN

San Juan River at Ship Rock, N. Mex.

Location.--Water-stage recorder, lat. 36°47'35", long. 108°43 I 55", in SW£ sec. 22, T. 30 

n., H. 18 W., 3 miles northwest of Ship Rock and 6 miles downstream from Chaco River. 

Upstream and downstream gages are each 400 feet from middle gage. Datum of downstream 

gage, 4,848.6 feet above mean sea level (from river-profile survey). Datum of middle 

and upstream gages is 1.85 feet higher.

Drainage area.--12.,900 square miles.

Records available. January to October 1911, October 1930 to September 1931, and October 

iy3i: to September 1950 in reports of Geological Survey. January to October 1911 and 

November 1915'to December 1931 in reports of State engineer.

Average discharge.--30 years (1916-20, 1921-25, 1927-31, 1932-50), 2,739 second-feet.

Extremes. Maximum discharge during year, 6,500 second-feet Sept. 20 (gage height, 4.08 

reet, middle gage); minimum daily, 86 second-feet Aug. 23.

1930-31, 1932-50: Maximum discharge, 44,200 second-feet Sept. 28, 193.5 (gage height, 

9.44 feet, middle gage, from floodmark), from rating curve extended above 20,000 secondfeet by logarithmic plotting; minimum daily, 8 second-feet Aug. 25, 26, 1939.

A stage of about 6.5 feet, site and datum then in use, occurred Aug. 11, 1929 (discharge, about 80,000 second-feet). A greater discharge probably occurred Oct. 6, 1911, 

when a stage of 22.0 feet on old gage (relation to present datum unknown) was recorded.

Remarks.--Records good. Diversions above station for irrigation. 

Revisions.--W 1119: Drainage area.

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

Oct.

849 

933

765 

737 

678

698 

659 

623 

623 

641

698 

828 

842 

828 

821

807 

842 

856 

891 

1,020

1,070 

1,000 

1,000 

1,010 

964

933 

849 

8OO 

800 

772 

744

JJov.

737 

786 

710 

710 

698

684

678 

641 

635 

635

641 

744 

793 

765 

704

710 

751 

758 

717 

724

724 

710 

698 

717 

717

704 

704 

691 

665 

659

Dec.

653 

653 

641 

611 

578

561 

539 

534 

572 

629

659 

684 

575 

484 

50O

506 

588 

572 

566 

594

594 

506 

473 

451 

468

528 

512 

517 

57? 

623 

647

Jan.

611 

623 

611 

583 

506

478 

468 

478 

594 

611

678 

698 

717 

611 

566

678 

566 

659 

678 

710

758 

765 

765 

793 

814

821 

814 

751 

779 

807 

772

Feb.

678 

653 

629 

635 

678

744 

793 

1,080 

1,260 

1,040

996 

1,OOO 

912 

807 

672

623 

623 

647 

751 

842

898 

980 

988 

884 

800

842 

891 

1,040

Month

Goto 

Nove 

Deoe

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1,400 

1,300 

1,200 

1,200 

1,040

996 

l.OOO 

1,140 

891 

751

786 

772 

744 

710 

641

629 

665 

665 

684 

842

807 

835 

807 

807 

807

940 

1,150 

964 

828 

758 

698

Apr.

1 

1 

2

1 

1 

fl 

f2 

2

1, 

1, 

1, 

2, 

2,

2, 

2, 

2,

2,

3, 

3, 

4, 

4, 

4,

4, 

4, 

4, 

3, 

3,

Secondfoot-days

25,581 

21,210 

17,590

1,167,448

20,763 

23,386 

27,457 

7-9,301 

97,200 

106,520 

35,153 

6,5S4 

23,183

483,928

Peak discharge (base, 10,000 sec. -ft.). No peak above

678 

793 

310 

970 

120

680 

660 

820 

210 

790

840 

780 

970 

060 

270

520 

230 

060 

270 

680

010 

860 

190 

640 

640

360 

320 

060 

710 

800

May

3,300 

3,420 

3,740 

3,830 

3,830

3,220 

2,770 

2,160 

1,890 

1,760

1,610 

1,500 

1,820 

2,030 

1,990

2,080 

2,500 

2,940 

3,120 

3,040

2,940 

3,650 

4,190 

4,390 

4,290

4,460 

4,060 

4,260 

4,360 

3,590 

4,460

Maximum

1,070 

793 

684

25,000

821 

1,260 

1,400 

4,640 

4,460 

5,730 

1,580 

517 

3,240

5,730

June

5,360 

5,730 

5,170 

5,360 

4,640

3,530 

3,710 

4,640 

4,020 

4,O6O

* 4,060 

3,800 

3,770 

3,800 

3,930

3,740 

3,710 

3,680 

3,190 

2,910

2,720 

2,670 

3,390 

2,860 

2,310

2,290 

2,100 

1,960 

1,810 

1,600

July

1,580 

1,540 

1,350 

1,300 

1,200

1,090 

1,350 

1,500 

1,480 

1,430

1,380 

1,340 

1,330 

1,330 

1,260

1,330 

1,370 

1,330 

1,420 

1,210

1,070 

926 

849 

898 

765

684 

647 

588 

528 

561 

517

Aug.

517 

435 

395 

298 

236

256 

272 

264 

264 

236

208 

436 

260 

240 

248

252 

216 

176 

119 

104

107 

101 

86 

90 

95

95 

112 

139 

104 

104 

119

Minimum Mean

623 825 

635 707 

451 567

200 3,198

468 670 

623 835 

629 886 

678 2,643 

1,500 3,135 

1,600 3,551 

517 1,134 

86 212 

98 773

86 1,326

base.

Sept.

109 

107 

109 

107 

104

104 

98 

136 

550 

484

473' 

490 

405 

400 

435

415 

451 

655 

1,930 

3,240

1,750 

1,690 

1,350 

1,190 

1,170

1,370 

1,160 

1,010 

863 

828

Runoff in 

acre-feet

50,740 

42,070 

34,890

2,316,000

41,180 

46,390 

54,460 

157,300 

192,800 

211,300 

69,720 

13,060 

45,980

.959,900
SAN JUAN RIVER BASIN 311

San Juan River near Bluff, Utah

Location. Water-stage recorder, lat. 37°09', long. 109"52', in SWj sec. 7, T. 42 S., R.

19 E., 1,600 feet downstream from Gypsum Creek, 1,800 feet upstream from bridge, and

20 miles southwest of Bluff. Altitude of gage, 4,050 feet (from river-profile map).

Drainage area.--23,000 square miles.

Records available.--October 1914 to September 1917, March 1927 to September 1950.

Average discharge.--26 years (1914-17, 1327-50), 2,837 second-feet.

Extremes.--Maximum discharge during year, 7,710 second-feet June 23 (gage height, 9.85 

feet); minimum, 66 second-feet Aug. 29.

1914-17, 1927-50; Maximum discharge, 70,000 second-feet Sept. 10, 1927 (gage 

height, 32.0 feet), from rating curve extended above 30,000 second-feet; no flow 

July 3-13, 1934, Aug. 24-27, 29, 1939.

Flood of Oct. 6, 1911, which is greatest known at Ship Rock, N. 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, 

which are fair. Diversions above station for irrigation. No diversion between station 

and mouth of river. Records of chemical analyses, water temperatures, and sediment 

loads for the water year 1950 are given in Water-Supply Paper 1189.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

679 

623 

921 

998 

900

798 

732 

732 

738 

744

762 

780 

798 

816 

792

726 

674 

702 

1,700 

1,650

1,170 

1,100 

1,110 

1,080 

1,070

1,060 

1,040 

949 

858 

804 

768

Nov.

750 

726 

697 

685 

656

651 

645 

606 

792 

744

804 

816 

840 

888 

907

852 

768 

768 

792 

768

756 

744 

744 

744 

714

732 

744 

738 

756 

685

Dec.

656 

634 

634 

623 

612

606 

563 

547 

542 

557

645 

f691 

f679 

f521 

f428

f404 

f382 

451 

726 

768

726 

756 

f645 

f471 

f413

f364 

f395 

f490 

476 

495 

526

Jan.

f623 

732 

f720 

f606 

f413

a408 

a402 

a397 

a390 

a420

f442

rsoo

f531 

f536 

536

547 

446 

f505 

691 

762

956 

991 

1,050 

1,280 

1,070

956 

f792 

f732 

756 

792 

804

Feb.

726 

685 

f656 

f645 

634

656 

726 

1,100 

1,180 

1,400

1,380 

1,190 

1,020 

870 

804

738 

668 

691 

714 

744

852 

942 

935 

970 

907

858 

894 

1,000

Month

Ooto 

Nove 

Deoe

Ca

Janu 

Febr 

Marc

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

991 

1,370 

1,470 

1,340 

1,220

1,100 

998 

977 

956 

935

822 

822 

840 

810 

750

674 

f623 

651 

691 

679

726 

907 

822 

858 

852

907 

870 

1,030 

1,000 

882 

792

Apr.

738 

674 

679 

876 

1,680

1,800 

1,470 

1,550 

1,730 

2,440

2,550 

2,110 

1,790 

1,680 

1,780

1,930 

2,060 

1,910 

1,830 

1,930

2,330 

2,710 

3,420 

4,050 

4,240

4,270 

3,810 

3,540 

3,440 

3,450

Secondfoot-daya

28,274 

22,512 

17,426

1,253,836

20,786 

24,585 

28,365 

68,467 

85,360 

96,320 

34,463 

7,349 

21,051

454,958

May

3,240 

2,710 

2,670 

2,890 

3,300

3,380 

2,750 

2,450 

1,960 

1,750

1,630 

1,540 

1,560 

1,630 

1,780

1,760 

1,650 

2,040 

2,370 

2,720

2,840 

2,840 

3,230 

3,700 

4,230

4,040 

3,980 

3,700 

3,870 

3,800 

3,350

Maximum

1,700 

907 

768

25,400

1,280 

1,400 

1,470 

4,270 

4,230 

4,900 

2,150 

461 

3,070

4,900

June

3,920 

4,670 

4,800 

4,880 

4,900

3,980 

3,170 

3,300 

3,870 

3,310

2,970 

3,140 

3,390 

3,620 

3,370

3,240 

2,960 

2,950 

2,820 

2,680

2,460 

3,150 

3,840 

2,890 

2,500

2,200 

2,030 

1,910 

1,730 

1,670

July

1,530 

1,450 

,450 

,250 

,180

,130 

,130 

,480 

,150 

,390

,420 

,740 

,260 

,290 

,150

,090 

,120 

,170 

,140 

,050

1,030 

921 

958 

786 

726

750 

714 

628 

552 

505 

423

Minimum

623 

606 

364

70

390 

634 

623 

674 

1,540 

1,670 

423 

83 

90

83

Aug.

461 

442 

461 

f413 

f364

237 

248 

251 

251 

244

346 

f284 

241 

303 

360

f296 

269 

258 

244 

192

157 

151 

129 

104 

92

92 

85 

83 

85 

94 

112

Mean

912 

750 

562

3,435

671 

878 

915 

2,282 

2,754 

3,211 

1,112 

237 

702

1,246

Sept.

102 

90 

106 

99 

94

94 

99 

104 

114 

114

286 

536 

409 

360 

344

319 

360 

382 

896 

3,070

2,420 

1,530 

1,540 

1,350 

1,170

1,070 

1,090 

1,110 

935 

828

Runoff in 

acre-feet

56,080 

44,650 

34,560

2,487,000

41,230 

48,760 

56,260 

135,800 

169,300 

191,000 

68,360 

14,580 

41,750

902,300

Peak discharge (base, 12,000 aec.-ft.). No peak above baae.

a No gage-height record; discharge computed on basis of 4 discharge measurements, weather records, 

and records for San Juan River at Shiprock, N. Mex.

f Discharge computed on basis of partly estimated gage-height record.

207364 O - 52 - 21
312 SAN JUAN RIVER BASIN

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

Location.--Water-stage recorder, lat. 37°29'00", long. 106°S5'45", in sec. 36, T. 38 N., 

K. i W., half a mile downstream from Beaver Creek, lg miles upstream from Borns Lake, 

and 16 miles northeast of Pagosa Springs.

Drainage area.--41.2 square miles.

Records available.--April 1937 to September 1950.

Average discharge.--15 years, 86.1 second-feet.

Extremes.--Maximum discharge during year, 488 second-feet June 1 (gage height, 3.64 feet); 

minimum, 12 second-feet Feb. 13, 14 (gage height, 1.35 feet).

1937-50: Maximum discharge, 1,290 second-feet June 18, 1949 (gage height, 5.24 

feet), from rating curve extended above 750 second-feet; minimum daily, 7.2 second-feet 

Feb. 21, 1939.

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. No diversion or regulation.

Rating table, water year 1949-5O, except periods of ice effect

(gage height, in feet, and discharge, in second-feet)

(Shifting-control method used Oct. 1 to Nov. 30, Dec. 7-9,

July 9 to Aug. 6, Aug. 25 to Sept. 20)

1.3 

l!4

1.6

1.7 

1.9

11 2.3 106

2.5 138

2.9 226

3.2 310

3.5 430

Discharge, in second-feet, water year October 1949 to September 1950

pay

1 

2

3 

4

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 i 4

25

26 

27 

28

29 

30 

31

Oct.

27 

24

20 

20

19 

18 

20 

28 

24

27

30 

30 

30 

29

27 

28

27 

20

22

23 

25 

25 

24 

25

25 

24 

23

22 

22

20

Nov.

20 

*18 

18 

18 

18

18 

18 

17 

17 

16

17 

b!4 

bis 

b!9 

19

19

18 

1&

18 

18

18 

17 

17 

17 

16

16 

16 

17 

16 

16

Dec.

16 

16 

16 

15 

16

16 

*14

16 

15 

b!5

b!4 

b!4 

b!4 

b!5 

b!5

b!5 

15 

14 

14 

14

14 

14 

14 

14 

14

14 

14 

14 

14 

14 

14

Jan.

14 

14 

14 

14 

14

13 

13 

13

P 13

13 

13 

13 

13 

13

13 

13 

13 

13 

14

15 

16 

16 

15 

14

14 

14

13

13

13

Feb.

13 

13 

13 

13 

13

13

13 

13 

13 

13

13 

13 

12 

12 

13

13 

14 

15 

16

16

14 

14 

14 

IS

18

19 

18 

17

Month

Ooto 

Nove

Dece

Ca

Janu Febi* 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

lendar year 194E

ter year 1949-50 .......................

Mar.

17 

17 

17 

18 

19

21 

18 

18 

18 

17

16 

15 

15 

16 

17

18 

20 

23 

23 

24

24 

25

27 

29 

30

26 

23 

21

22 

25 

29

Apr.

36 

52 

64 

52 

48

63 

77 

92 

64 

51

51 

60 

74 

81 

72

56 

60 

89 

114 

136

180 

198 

212 

216 

207

200 

198 

207 

200 

191

Secondfoot -days

750 

519 

454

47,585

422 

396 

648 

3,401 

6,869 

6,891 

1,758 

678 

728

23,515

May

200 

214

214 

191 

154

130 

120 

114 

119 

128

142 

150 

132 

136 

154

176 

207 

228 

228 

238

280 

307 

334 

366 

338

304 

298 

286 

289 

326 

366

Maximum

30

20 

16

1,200

16 

19

30 

216 

366 

393 

98 

3S 

62

398

June

398 

394 

352 

280 

265

304 

304 

274 

265 

268

283 

283 

271 

259 

248

245 

238 

219 

195 

180

169 

178 

ISO 

148 

138

128 

120 

114 

105 

96

July

89 

81 

77 

72 

75

67 

59 

72 

98 

77

75 

59 

49 

42

77

59 

52 

52 

56 

50

45 

45 

42 

43 

44

40 

35 

37 

33 

30 

27

Minimum

18 

14 

14

lo

13 

12 

15 

36 

114 

96 

27

14

12

Aug.

27 

27 

31 

25 

24

35 

28 

25 

24 

23

23 

22 

22 

21 

2O

20 

19 

19 

18 

18

16 

 16 

16 

16 

22

25 

22 

20 

19 

18 

17

Mean

24.2 

17.3 

14.6

130 ^

13.6 

14.1 

20.9 

113 

222 

230 

56.7 

21.9 

24.3

64.4

Sept.

16 

15 

15 

15 

14

14 

27

21 

20

20 

19 

18

18 

17

16 

19 

35 

62 

57

28 

35 

33 

30 

29

26 

24 

22 

21 

20

Runoff in 

acre- feet

1,490 

1,030 

900

94,380

837 

785 

1,290 

6,750 

13,620 

13,670 

3,490 

1,340 

1,440

46,640

Peak discharge (base, 500 sec.-ft.). Ho peak above base.

* Winter discharge measurement made on this day,

b Stage-discharge relation affected by ice.

Note. Ho gage-height record Feb. 27 to Apr. 1, July 18-30, Sept. 2-7; discharge computed on basis 

of 1 discharge measurement, recorded range in stage, weather records, and records for San Juan River 

at Pagosa Springs.
SAN JUAN RIVER BASIN 313 

West Fork San Juan River near Pagosa Springs, Colo.

Location.--Water-stage recorder, lat. 37°22'30", long. 106°53'45", In NE-J sec. 12, T, 36 

N., K. 1 W., a quarter of a mile downstream from bridge on U. S. Highway 160, 0.6 mile 

upstream from mouth, and 10 miles northeast of Pagosa Springs. Datum of gage is 

7,605.57 feet above mean sea level, datum of 1929.

Drainage area. 87.9 square miles.

Records available.--April 1935 to September 1950.

Average discharge.--15 years, 169 second-feet.

Extremes.--Maximum discharge during year, 768 second-feet June 1 (gage height, 3.42 feet); 

minimum daily, 13 second-feet Dec. 11.

1935-50: Maximum discharge, 2,300 second-feet June 23, 1941, from rating curve extended above 1,300 second-feet; maximum gage height, 6.45 feet June 18, 1949; minimum 

daily discharge, 10 second-feet Dec. 19, 1937. 

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. Diversions above station for irrigation.

Day

1 

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

Oct.

42 

40 

35 

34 

34

33 

32 52 

52 

48

52 

53 

55 

55 

55

52 

52 

53 

53

48

50 

48 

50 

48 

48

50 

48 

47 

47 

45 

39

Nov.

41 

39 

39 

38 

38

38 

36 

36 

36 

36

36 

23 

32 

32 

36

35 

36 

36 

36 

35

35 

35 

31 

32 

32

'32

31 

31 

29 

28

Dec.

28 

22 

22 

21

17

*20 

23 

24 

b25 

b20

13 

14 

15 

17 

18

22 

22 

22 

22 

22

20 

19 

20 

22 

22

21 

20 

20 

21 

21 

22

Jan.

22 

22 

21 

19 

20

21 

21 

21 

22 

21

*21 

21 

21 

21 

21

21 

2.2 

22 

23 

22

22 

22 

23 

24 

23

22 

21 

22 

23 

22 

22

Feb.

22 

21 

22 

23 

24

25 

26 

26 

24 

*23

26 

25 

21 

22 

22

22 

23 

24 

27 

29

30

262a

30 

32

35 

39 

40

Month

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

mber. ...................................

lendai- year 1949

ter year 1949-50 .......................

Mar.

37 

34 

32 

34 

38

40 

*34 

28 

34 

32

28 

28 

24 

32 

32

35 

39 

47 

45 

48

52 

56 

58 

71 

72

63 

60 

58 

58 

60 

74

Apr.

117 

166 

189 

159 

152

166 

179 

266 

220 

17-6

166 

169 

183 

196 

193

166 

162 

193 

227 

297

325 

350 

360 

372 

353

336 

328 

346 

336 

314

Secondfoot -days

1,430 

1,036 

637

79,809

671 

737 

1,383 

7,162 

11,548 

11,521 

3,278 

1,294 

966

41,663

May

328 

342 

353 

532 

286

262 

238 

230 

224 

241

263 

276 

266 

362 

276

290 

328 

356 

360 

372

436 

488 

520 

556 

572

512 

436 

476 

472 

532 

604

Maximum

55

41 

28

1,900

24 

40 

74 

372 

604 

660 

159 

56 

80

660

June

660 

652 

636 

540 

492

532 

504 

436 

425 

425

453 

446 

436 

414

394

386 

383 

362 

341 

320

299

316 

278 

250 

232

215 

201 

187 

162 

144

July

141 

123 

120 

115 

118

110 

103 

138 

153 

141

138 

126 

113 

101 

126

118 

103 

106 

110

101

32 

92 

86 

90 

88

76 

72 

76 

70 

62 

58

Minimum

32 

28 

13

13

I9~[ 

21 

24 

117 

224 

144 

58 

26 

16

13

Aug.

54 

56 

56 

51 

52

56 

51 

49 

47 

45

47 

49

45 

45 

42

4O 

38 

36 

35 

34

32 

29 

28 

30 

36

47 

42 

35 

32 

29 

26

Mean

46.1 

34.5 

20.5

219

21.6 

26.3 

44.6 

233 

373 

384 

106 

41.7 

32.2

114

Sept.

24 

23 

21 

 21 

19

18 

18 

26 

26 

23

21 

21 

19 

17 

17

16 

16 

38 

52 

80

49 

49 

52 

47 

47

47 

45 

42 

38 

34

Runoff In 

acre-feet

2,840 

2,050 

1,260

158,300

1,330 

1,460 

2,740 

14,210 

22,310 

22,850 

6,500 

2,570 

1,920

82,640

Peak discharge (base, 90Q sec.-ft.). No peak above base.

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 11 to Bar. 6 (stage-discharge relation affected by ice during 

part of period); discharge computed on basis of 2 discharge measurements, weather records, and 

records for San Juan River at Pagosa Springs.
314 SAN JUAN RIVER BASIN

Rio Blanoo near Pagosa Springs, Colo.

Location.--Water-stage recorder, lat. 37°12'45", long. 106°47'40", in center of sec. 1, T. 

34 N., R. IE., at county highway bridge, 0.4 mile upstream from White Creek and 12.5 

miles southeast of Pagosa Springs.

Drainage area.--58.0 square miles.

Records available.--May 1935 to September 1950.

Average discharge.--15 years, 90.6 second-feet.

Extremes.--Maximum discharge during year, 834 second-feet July 10 (gage height, 3.76 feet); 

minimum daily, 6.8 second-feet Sept. 4.

1935-50: Maximum discharge, 1,490 second-feet Oct. 12, 1941, from rating curve extended above 450 second-feet; maximum gage height, 4.12 feet June 18, 1949; minimum 

daily discharge, 6.0 second-feet Sept. 3, 1942. 

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. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1349 to September 195O

Day

1 

2 

3

4 

5

6 

7 

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 

22 

20

19 

20

20 

17 

17 

24 

24

26 

28 

25 

22 

21

20 

22 

24 

24 

24

26 

27 

30 

26 

26

26 

25 

22 

21 

20 

16

Nov.

17 

16 

16 

15 

14

14 

14 

13 

14

15

16 

15 

14 

21 

24

25 

26 

28 

28 

28

28 

25 

22 

22 

20

19 

19 

19

18 

16

Dec.

16 

14 

14 

14 

15

*13 

14 

11 

11 

10

10

11

12 

13 

14

15 

15 

15 

15 

15

14 

13 

14 

15 

15

14 

15 

15 

15 

15 

 15

Jan.

15 

15 

15 

13 

14

15 

15 

15 

15 

*15

15 

15 

15 

15 

15

15 

16 

16 

16 

15

15 

16 

17 

17 

17

16 

15 

16

16 

16 

15

Feb.

15 

15 

15 

16 

17

17 

18 

18 

*16 

15

15 

14

15 

17

16 

16 

17 

18 

19

18 

17 

18 

19 

20

21 

22 

22

Month

Goto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

21 

19 

18 

19 

20

18 

 16 

17 

18 

20

20 

18 

15 

22 

29

34 

44 

52 

50 

52

53 

54 

59

69 

68

52 

52 

48 

46 

51 

66

Apr.

105

136 

115 

*96 

94

99 

108 

129 

97

81

85 

94 

98 

101 

97

88 

103 

136 

154 

202

251 

272 

278 

269 

236

224 

222 

239 

213 

184

Secondfoot-days

710 

581 

427

37,230.4

476 

482 

1,140 

4,606 

5,627 

4,291 

1,472 

349.7 

489.0

20,650.7

May

208 

224 

224 

184 

134

112 

97 

93 

94 

98

106 

113 

110 

121 

148

184 

197 

199 

184 

176

224 

254 

251 

278 

272

242 

219 

189 

181 

233 

278

Maximum

30 

28 

16

874

17 

22 

69 

278 

278 

284 

200 

20 

60

284

June

284 

266 

269 

224 

171

189 

222 

174 

162 

164

176 

176 

159 

148 

142

134 

124 

113 

99 

92

85 

121 

96 

85 

82

76 

72 

66 

62 

58

July

54 

50 

48 

46 

45

46 

44 

53 

62 

2OO

105 

57 

66 

53 

57

43 

38 

39 

34 

30

29 

34 

31 

30 

33

29 

26 

26 

25 

21 

18

Minimum

16 

13 

10

8.8

13 

14 

15 

81 

93 

58 

18 

7.6 

6.8

6.8

Aug.

17

17 

16

15 

15

20 

17 

15 

14 

13

12 

12 

10 

10 

9.8

9.8

10 

10 

9.2 

8.5

8.2 

8.0 

7.8 

8.0 

8.2

9.0 

9.0 

8.2 

7.8 

7.6 

7.G

Sept.

7.6 

8.0 

7.0 

6.8 

7.6

9.2 

11 

14 

13 

11

11 

9.5 

9.0 

8.8 

8.5

8.0 

8.0 

13 

30 

60

30 

24 

24 

25 

28

25 

19 

19 

17

17

Mean Runoff in Mean acre-feet

22.9 1,410 

19.4 1,150 

13.8 847

102 73,860

15.4 944 

17.2 956 

36.8 2,260 

154 9,140 

182 11,160 

143 8,510 

47.5 2,920 

11.3 694 

16.3 970

56.6 40,960

Peak discharge (base, 8OO see.-ft.). July 1O (5 p.m.) 834 sec.-ft.

* Winter discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 11, Jan. 10-15, Feb. 9 to Mar. 12. No gageheight record Dec. 12 to Jan. 9, Jan. 16 to Feb. 8, Mar. 13, 14 (stage-discharge relation affected 

by ice during most of periods), Sept. 16-30; discharge computed on basis of recorded range in stage, 

weather records, and records for stations on nearby streams.
SAN JUAN RIVER BASIN 315

Rito Blanco near Pagosa Springs, Colo.

Location.--Water-stage recorder, lat. 37 0 11'40", long. 106°54'20", in SW£ sec. 12, T. 34 

W., K. 1 W., at county highway bridge, 600 feet upstream from Sheep Cabin Creek and 

7f miles southeast of Pagosa Springs.

Drainage area. 23.3 square miles.

Records available.--May 1935 to September 1950.

Average discharge. 15 years, 18.7 second-feet.

Extremes.--Maximum discharge during year, 88 second-feet Apr. 21 (gage height, 2.14 feet); 

no" flow July 31 to Aug: 6, Aug. 8 to Sept. 7, Sept. 13-17, 29, 30.

1935-50: Maximum discharge, 475 second-feet May 13, 1941 (gage height, 3.21 feet, 

site and datum then in use), from rating curve extended above 350 second-feet; no flow 

at times in 1939, 1940, 1943-44, 1948, 1950. 

Maximum flood known occurred Oct. 5, 1911.

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

which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

2.8 

2. .4

2.1 

2.0 

2.0

2.1 

2.0 

2.0 

2.2 

2.4

2.2 

3.0 

Z.4 

2.2 

2.1

2.0 

2.1 

2.4 

2.4 

2.2

2.4 

2.4 

2.8 

1.1 

.8

.9 

1.0 

1.0 

.9 

.8 

.9

Nov.

 1.0

1.1 1.1

1.0 

1.2

1.4 

1.5 

1.4 

1.4 

1.7

2.0 

1.7 

2.6 

4.1 

3.8

3.6 

3.5 

3.3 

3.0

2.5

2.5 

2.5 

1.9 

2.1 

1,7

1.7 

1.7 

1.7 

1.7 

1.9

Dec.

Z.O 

1.6 

1.6 

1.8 

2.2

*2.4 

4.0 

4.5 

Z.O 

2.0

1.5 

1.4 

1.6 

2.0 

2.7

2.7 

2.7 

2.7 

2.6 

2.4

2.2 

2.2 

2.3 

2.3 

2.3

2.1 

1.9 

1.9 

2.0 

2.1 

2.1

Jan.

2.1 

2.1 

1.9 

1.7 

1.6

1.7 

l.S 

1.8 

1.8 

*1.7

1.7 

1.8 

1.8 

1.8 

1.8

1.9 

2.0 

2.0 

1.9 

1.8

1.8 

1.9 

1.9 

1.9 

1.8

1.7 

1.6

1.6 

1.7 

1.7 

1.7

Feb.

1.7 

1.6 

1.5 

1.6 

1.7

1.7 

1.8 

1.8 

1.7 

 1.7

1.8 

1.8

1.6 

1.6 

1.7

1.8 

1.9 

2.0

2.1 

2.4

2.6 

2.0 

2.1 

2.3 

2.5

2.8 

3.1 

3.5

Month

Oeto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

3.2 

2.5 

2.2 

2.4 

3.0

2.8 

*2.2 

1.4 

1.6 

1.4

1.2 

1.0 

.9 

1.7 

4.5

3.0

5.0 

6.5 

8.0 

7.5

9.4 

11 

9.4 

12 

13

12

13 

14 

10 

8.7 

8.7

Apr.

17 

28 

32 

*28 

30

31 

34 

49 

39 

30

30

30 

30 

30 

30

23 

28 

38 

49 

59

73 

76 

75 

65 

55

45 

38 

38 

50 

38

Secondfoot -days

60.0 

62.3 

69.8

8,329.6

56.0 

56.4 

183.2 

1,223 

570 

313.2 

16.9 

.2 

12.4

Z.623.4

May

45 

44 

40 

38

28

20 

14 

1Z 

11 

11

11 

12 

12 

12 

13

13 

13 

14 

14 

12

13 

14 

14 

16 

19

18 

19 

16

14 

17 

21

Maximum

3.0 

4.1 

4.5

156

2.1 

3.5 

14 

76 

45 

32 

5.0 

.2 

4.0

76

June

Z5 

27 

32 

28 

22

20 

30 

28 

17 

9.0

10 

10 

9.0 

7.0 

6.0

5.6 

5.4 

5.0 

4.5 

2.0

1.3 

2.0 

1.6 

1.4 

1.3

.9 

.7 

.6 

.5 

.4

July

0.3 

.2 

.Z 

.1 

.1

.1 

.1 

.2 

1.5 

5.0

2.0 

.8

.5 

.6 

.4

.3 

.4 

.5 

.5 

.4

.3 

.4 

.3 

.3 

.3

.3 

.3

.2 

.2 

.1

0

Minimum

0.8 

1.0 

1.4

.7

1.6 

1.5 

.9 

17 

11 

.4 

0 

0 

0

0

Aug.

OOOOO OOOOOOOOO OOO

Mean

1.94

2.08 

2.25

22.8

1.81 

2.01 

5.91 

40.8 

18.4 

10.4 

.55 

.01 

.41

7.19

Sept.

0 

0 

O 

0 

0

0 

0 

.4 

.6

.2

.1 

.1 

0 

0 

0

0 

0 

.3 

.8 

4.0

.9 

.9 

2.1 

1.1 

.4

.2 

.1 

0

o

Runoff in 

acre-feet

119 

124 

138

16,520

111 

112 

363 

2,430 

1,130 

621 

34 

.4 

25

5,210

Peak discharge (base, 90 sec. -ft.). No peak above base.

Winter discharge measurement made on this day. 

Note. No gage-height record Nov. 2 to Dec. 5, Dec. 13 to Jan. 9, Jan. 14 to Feb. 9 (stage-discharge relation affected by ice during part of periods), Apr. 24 to May 1, May 6, 7, June 8-11, 13- 

18, 22-24, June 27 to July 12; discharge computed on basis of recorded range in stage, weather 

records, and records for stations on nearby streams. Stage-discharge relation affected by ice Dec. 

11, 12, Feb. 10 to Mar. 14.
316 SAN JUAN RIVER BASIN

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

Location.--Water-stage recorder, lat. 37°05'00", long. 106°41'30", in NW£ sec. 24, T. 33 

N., R. 2 E., on Banded Peak Ranch, half a mile downstream from Aspen Creek and 9 miles 

northeast of Chromo. Prior to Oct. 1, 1949, at datum 3.00 feet higher.

Drainage area.--69.8 square miles.

Records available.--April 1937 to September 1950 (no winter records in 1943).

Average discharge. 13 years (1937-42, 1943-50), 113 second-feet.

Extremes.--Maximum discharge during year, 338 second-feet May 31 (gage height, 4.17 feet); 

minimum discharge, 10 second-feet Sept. 26 (gage height, 2.41 feet).

1937-50: Maximum discharge, 1,340 second-feet May 13, 1941 (gage height, 7.02 feet, 

present datum); minimum recorded, that of Sept. 26, 1950. 

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records good after May 1, others fair. No diversions or regulations above 

station.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7

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.

40 

37 

36 

33 

30

30 

29 

31 

36 

36

31 

28 

28 

29 

30

29 

30 

36 

35

31

32 

34

36 

36 

38

41 

41 

38 

36 

37 

36

Nov.

*38 

38 

38 

36 

33

33 

35

36 

36 

38

35 

34 

35 

36 

38

39 

38 

40 

40 

40

39 

38 

37 

38 

38

36 

36 

35 

35 

34

Dec.

35 

*36 

30 

30 

28

26 

27 

27 

29 

28

21 

21 

22 

23 

25

25 

25 

25 

25 

25

24 

25 

25 

25 

25

25

25 

26 

26 

26 

26

Jan.

26 

25 

24 

25 

25

25 

25 

25 

25 

*25

25 

25 

25 

25 

25

25 

25 

26 

26 

25

25

25 

25 

26 

25

24 

23 

23 

23 

23 

23

Feb.

22 

21 

21 

21 

21

21 

21 

22 

*22 

22

23 

23 

22 

23 

23

23 

23 

25

26 

28

27 

25 

25 

27 

28

30 

32 

33

Month

Goto 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Mflv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-60 .......................

Mar.

31 

30 

28 

31 

36

31 

*35 

33 

34 

35

36 

29 

29 

32 

34

36 

41 

43 

43 

45

45 

47 

49 

56 

58

49 

45 

45 

45 

47 

60

Apr.

85 

112 

104 

94 

100

110 

122 

163 

129 

108

112 

122 

129 

136 

132

122 

132 

163 

184 

204

243 

267 

282 

267 

249

240 

249 

252 

246 

226

Secondroot-days

1,050 

1,102 

811

44,265

767 

680 

1,238 

5,084 

6,400 

5,023 

1,658 

798 

746

25,357

May

232 

237 

240 

234

192

163 

146 

139 

132 

122

127 

136 

146 

153 

181

204 

220 

229 

223 

206

232 

255 

258 

267 

264

249 

240 

223 

220 

252 

278

Maximum

41 

40 

36

720

26 

33 

60 

282 

278 

278 

84 

32 

37

282

June

278 

264 

255 

229 

195

198 

226 

201 

195 

198

209 

206 

192 

179 

176

174 

168 

153 

136 

129

124 

161 

134 

120 

110

100 

84 

77 

76 

76

July

73 

67 

66 

63 

63

66 

64 

70 

66 

70

84 

66 

61 

61 

56

53 

43

52 

46 

41

45 

39 

40 

40 

47

40 

36 

36 

32 

32 

35

Minimum

28 

33 

21

11

23 

21 

28 

85 

122 

76 

32 

22 

18

18

Aug.

27 

26 

29 

27 

27

32

27 

27 

25 

25

30

29 

29 

28 

26

26 

SB 

28 

26 

24

24 

22 

23 

24 

22

24 

24 

22 

23 

23 

23

Mean

33.9

36.7 

26.2

121

24.7 

24.3 

39.9 

169 

206 

167 

53.5 

25.7 

24.9

69.5

Sept.

21 

22 

22 

22 

25

26 

27 

26 

24 

22

23 

20 

21 

21 

20

18 

20 

29 

32 

37

28 

35 

30 

32 

32

24 

22 

23 

19 

23

Runoff In 

acre -feet

2,080 

2,190 

1,610

87,800

1,520 

1,350 

2,460 

10,080 

12,690 

9,960 

3,290 

1,580 

1,480

50,290

Peak discharge (base, 550 see.-ft.). No peak above base.

* Winter discharge measurement made on this day.

Note. No gage-height record Nov. 18 to Dee. 1, Dec. 11 to Mar. 6 (stage-discharge relation affected by ice during part of periods); discharge computed on basis of 2 discharge measurement, weather 

records, and records for stations on nearby streams.
SAN JUAN RIVER BASIN 317

Navajo River at Edith, Colo.

Location. Water-stage recorder, lat. 37°00'10", long. I06°54'20", in NW^ sec. 24, T. 32

 N., K. 1 W., 340 feet 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. Datum of gage 

is 7,033.00 feet above mean sea level (Bureau of Reclamation Bench mark).

Drainage area. 165 square miles.

Heeoras available. September 1912 to December 1914'and June 1935 to September 1950 in 

reports or ueological 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.

Average discharge.--31 years (1912-28, 1935-50), 175 second-feet.

Extremes. Maximum discharge during year, 399 second-feet June 1 (gage height, 3.82 feet); 

minimum dally, 18 second-feet Sept. 3-5.

1935-50: Maximum discharge, 2,840 second-feet Apr. 23,-1942 (gage height, 6.55 feet), 

from rating curve extended above 1,100 second-feet; minimum daily, 11 second-feet Feb. 4, 

1943.

Maximum flood known occurred Oct. 5, 1911.

Remarks. Records good except thoae for period of Ice effect, which are fair. Diversions 

aoove station for irrigation.

Rating table, water year 1949-50.,. except period of Ice effect

(gage height, In feet, and discharge, In second-feet)

(Shifting-control method used Mar. 1-24,

Apr. 19 to May 3, July 11, 12)

2.3 16

2.4 24

2.5 33

2.6 44

2.7 59

2.8 78

3.2 175

3.5 27O

3.8 390

Discharge,, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

54

52 

47 

44 

38

38 

37 

37 

42 

43

42 

37 

34 

35 

36

36 

35

41 

43 

37

36 

36 

44 

43 

43

44

44 

44 

41 

40 

38

Nov.

 41 

41 

41 

40 

36

35 

36 

37 

40 

42

42 

35 

36 

40 

42

43 

43 

44 

43

43

42 

40 

40 

40 

40

39 

39 

39 

' 3833

Dec.

34 

33

31 

28 

27

*26 

25 

25 

27 

25

22 

20 

21 

25 

27

30 

30 

30 

30 

29

27 

29 

3O 

30 

29

28 

29 

30

31 

31 

30

Jan.

31 

30 

29 

27 

29

30 

30 

30

31 

*30

29 

29

29 

29 

30

30 

31 

32 

33 

32

32 

34 

36 

38

37

36 

38 

40 

40 

40 

38

Feb.

37 

37 

40 

43 

47

49 

52 

52 

*50 

48

54 

48 

46 

50 

50

48 

52 

54 

58 

62

60 

56 

58 

62 

70

76 

84 

96

Month

Ooto 

Kove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

Mflv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

91 

78 

70 

74 

85

89

*61 

52 

54 

56

52 

48 

4O 

43 

50

52 

59 

68 

59 

68

67 

68 

76 

85 

93

76 59- 

54 

56 

65 

74

Apr.

108 

138 

162 

145 

140

158 

162 

208 

202 

170

160 

170 

172 

181 

184

170 

168 

196 

214 

235

278 

326 

350 

362 

350

326 

334 

334 

346 

322

Secondfoot-days

1,261 

1,190 

869

60,737

1,010 

1,539 

2,022 

6,771 

8,148 

6,299 

2,159 

933 

1,099

33,300

May

326 

334 

334 

370 

310

211 

184 

170 

160 

160

158

162 

175 

184 

235

246 

282 

260 

260 

232

263 

306 

322 

326 

354

326 

314 

302 

294

270 

318

Maximum

54 

44 

34

948

40 

96 

93 

362 

370 

354 

118 

38 

82

370

June

354 

338 

350 

310 

249

226 

274 

242 

223 

226

242 

238 

223 

208 

205

202 

199 

193 

181 

168

170 

199 

208 

170 

1502

135 

118 

1OO 

96 

102

July

Minimum

34

33 

20

20

27 

37 

40 

108 

158 

96 

41 

22 

18

18

93 

82 

78 

72 

67

65 

68

70 

78 

91

118 

82 

823 

89 

80

78 

70 

72 

68 

61

54 

65 

59 

52 

56

68 

54 

52 

48 

46 

41

Aug.

36 

32

36 

37 

33

36 

38 

28 

29 

2-8

29 

33 

31 

30 

28

29 

28 

27 

26 

26

30 

30 

28 

29 

29

31 

31 

31 

29 

22 

23

Mean

40.7 

39.7 

28.0

166

32.6 

55.0 

65.2 

226 

263 

210 

69.6 

30.1 

36.6

91.2

Sept.

22

19 

18 

IS 

18

24 

27 

28 

27

27

32 

30 

30 

30 

30

27 

27 

37 

56 

82

52 

53 

53 

52 

59

52 

44 

44

41 

40

Runoff in 

acre-feet

2,500 

2,360 

1,720

120,500

2,000 

3,050 

4,010 

13.43O 

16,160 

12,490 

4,280 

1,850 

2,180

66,030

Peak discharge (base, 600 see.-ft.). Ko peak above base.

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Kov. 17 to Feb. 28.
318 SAN JUAN RIVER BASIN 

Little Navajo River at Chromo, Colo.

Location.--Water-stage recorder, lat. 37°02'10", long. 106°50<35", In SEv sec. 4, T. 32 

 M., H. IE., 400 feet upstream from bridge on U. S. Highway 84 at Chromo, a quarter of

a mile upstream from mouth. Datum of gage Is 7,288.52 feet above mean sea level, datum

of 1929.

Drainage area. 21.9 square miles. 

Kecords available. May 1935 to September 1950. 

Average discharge. 15 years, 13.6 second-feet, 

extremes.--Maximum discharge during year, 66 second-feet Apr. 21 (gage height, 2.92 feet);

no flow Aug. 25 to Sept. 18.

1935-50: Maximum discharge, 399 second-feet May 14, 1941 (gage height, 4.32 feet,

site then In use), from rating curve extended above 250 second-feet; no flow at times

In 1938, 1939, 1946, 1947, 1950.

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 above station for irrigation.

Rating tables, water year 1949-50, except period of Ice effect

(gage height, In feet, and discharge, In second-feet)

(Shifting-control method used Nov. 13 to Dec. 10)

Oct. 1 to Feb. 28 Mar. 1 to Sept. 30

1.9 0.2 1.7 0 2.1 2.8 2.5 20 

2.0 .6 1.8 .05 2.2 5.0 2.6 29 

2.1 1.7 1.9 .2 2.3 8.0 2.9 63 

2.2 4.5 2.0 1.0 2.4 13 

2.3 7.5

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0.5

.6 

.7 

.7 

.7

.8 

.7 

.7 

.8 

.9

.8 

.8 

1.0 

.8 

1.1

1.1 

1.3 

1.7 

2.3 

2.3

2.3 

3.1 

4.2 

4.2

3.7

3.7 

3.1 

2.8 

2.8 

2.5 

2.5

Nov.

*2.8 

2.8 

2.5 

2.5 

2.8

2.5 

2.5 

2.5 

2.8 

3.1

2.8 

3.1 

6.0 

4.8 

3.9

3.4 

3.4

2.5 

2.3 

2.3

2.3

1.7 

1.3 

1.7 

1.3

1.3 

1.3 

1.5 

1.5 

1.3

Dec.

1.7 

1.1 

1.1 

2.0 

2.0

 *2.0 

3.1 

3.4 

2.0 

2.3

bl.5 

bl.l 

bl.3 

bl.5 

bl.9

b2.2 

b2.2 

b2.2 

b2.1 

b2.0

1.9 

1.8 

1.9 

1.9 

1.9

1.7 

1.5 

1.6 

1.6 

1.7 

1.7

Jan.

1.6 

1.5 

1.4 

1.2 

1.2

1.3 

1.4 

1.4

1.4 

*1.3

1,3

1.3 

1.4 

1.5 

1.5

1.5

1.5 

1.6 

1.9 

2.1

2. '2 

2.2 

2.2 

2.2 

2.1

2.0 

2.0 

2.1 

2.2 

2.2 

2.3

Feb.

2.2 

2.2 

2.1 

2.1 

 2.1

2.1 

2.1 

2.2 

*2.3 

2.3

2.4 

2.5 

2.3 

2.3 

2.4

2.5 

2.7 

2.9 

3.2 

3.5

3.6 

3.0 

3.2 

3.4 

4.0

4.7 

5.6 

7.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Febn 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

6.6 

5.6 

5.6 

8.0 

11

12 

*12 

12 

9.0 

5.6

4.8 

4.1 

4.1 

6.5 

5.6

7.1 

7.7 

6.8 

6.8 

6.5

6.8 

6.2 

6.5 

9.0 

9.0

8.5 

7.7 

8.0 

6.8 

6.8 

8^0

Apr.

13

22 

22 

18 

19

21 

23 

32 

26 

21

24 

26 

26 

26 

27

24 

27 

36 

33 

41

51 

56 

56 

55 

49

44 

42

36 

31 

26

Secondfoot-days

55.2 

76.5 

57.9

5,180.8

53.0 

82.9 

230.7 

953 

171.6 

45.1 

18.5 

3.6 

1.2

1,749.2

May

21 

19 

19 

16 

13

11 

10 

7.7 

5.9 

4.6

3.9 

3.5

3.7 

3.Z 

3.2

3.9 

3.9 

2.4

1.7 

1.4

1.5 

1.9 

1.2 

1.0 

1.0

1.0 

1.0 

1.4 

1.4 

1.2 

1.0

Maximum

4.2 

6.0 

3.4

108

2.3

7.0 

12 

56 

21 

8.2 

2.8 

.2 

.1

56

June

0.9 

.8 

1.2

8.2 

7.7

5.3 

3.9

1.9 

1.5 

1.9

2.4 

1.7 

.8 

.7 

.5

.5 

.4 

.3 

.3

.2

.2 

1.2 

.8 

.4 

.3

.3 

.2 

.2 

.2 

.2

July

0.2 

.2 

.2 

.4 

.6

.4 

.4 

.4 

.5 

1.2

2.8 

1.0 

1.2 

1.4

.8

.6 

.5 

.5 

.4

.2

.2 

.5 

.5 

.6 

.6

.6 

.4 

.4 

.4 

.2 

.2

Aug.

ooooooo 

Sept.

ooo oooo ooooo

Minimum Mean. acre -feet

0.5 1.78 109 

1.3 Z.55 152 

1.1 1.87 115

.2 14.2 10,280

1.2 1.71 105 

2.1 2.96 164 

4.1 7.44 458 

13 31.8 1,390 

1.0 5.54 340 

.2 1.50 89 

.2 .60 37 

0 .12 7.1 

0 .04 2.4

0 4.79 3,470

Peak discharge (base, 80 sec. -ft.). No peak above base.

Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Dec. 21 to Mar. 6 (stage-discharge relation affected by ice most of 

period); discharge computed on basis of 2 discharge measurements, weather records, and records for 

stations on nearby streams.
SAN JUAN RIVER BASIN 319

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

Location.--Water-stage recorder, lat. 37°25'30", long. 107°11'30", in sec. 22, T. 37 N., 

K. 3 W., 1,000 feet downstream from Bridge ranger station, 1 mile downstream from 

Middle Fork, and 15 miles northwest of Pagosa Springs. Datum of gage is 7,640.35 feet 

above mean sea level (Bureau of Reclamation bench mark).

Drainage area.--82.3 square miles.

Records available.--April 1937 to September 1941, July 1946 to September 1950.

Extremes.--Maximum discharge during year, 450 second-feet May 31 (gage height, 4.45 feet); 

minimum daily recorded, 11 second-feet Sept. 3, 4.

1937-41, 1946-50: Maximum discharge, 1,800 second-feet June 18, 1949 (gage height, 

7.52 feet), from rating curve extended above 1,100 second-feet; 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, 

which are poor. A few small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

34 

3O 

28 

27 

26

27 

24 

26 

48 

36

39 

45 

48 

48 

45

45 

45 

47 

45 

38

38 

38 

43 

40 

42

45 

43 

42 

41 

40 

38

Nov.

37 

36 

35 

34 

35

34 

33 

32 

32 

33

32 

28 

32 

33 

33

32 

32 

31 

30 

30

30 

29 

28 

28 

2$

28 

26 

26 

26 

24

Dec.

24 

24 

25 

25 

25

*26 

26 

28 

25 

24

24 

21

Jan.

21

Feb.

(*) 

23

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

MAW

June 

July 

Augu 

Sept

Wa

lender year 1949

ember. ...................................

ter year 1949-50 .......................

Mar.

21 

23 

21 

18 

22

21 

19 

*b!7 

b25 

b24

b23 

b23 

20 

23 

24

23 

30 

36 

34 

39

39 

44 

51 

64

55

42 

35 

33 

39 

56 

71

Apr.

64 

116 

*118 

101 

96

103 

1O3 

137 

121 

92

87 

95 

104 

1O6 

101

93 

93 

121 

141 

161

199 

217 

219 

235 

223

221 

217 

219 

215 

187

Secondfoot -days

1,201 

927 

696

53,763

651 

644 

1,015 

4,305 

6,724 

6,964 

1,632 

633 

721

26,113

May

201 

213 

217 

197

157

136 

121 

112 

107 

118

136 

149 

136 

128 

149

163 

193 

205

215 

215

285 

305 

318 

34O 

328

300 

298 

29O 

292 

328 

372

Maximum

48 

37

1.41O

71 

235 

372 

387 

97 

39 

67

387

June331 

387 

370 

295 

268

310 

322 

278 

270 

280

3OO 

302 

288 

270 

252

248 

245 

223 

199 

175

155 

179 

167 

149 

137

128 

111 

103 

92 

80

July

72 

65 

60 

58 

64

56 

51 

97 

77 

58

60 

52 

54 

50 

54

52 

49 

60 

71 

59

47 

45 

40 

38 

38

35 

32 

47 

35 

29 

27

Minimum

24 

24

-

17 

64 

107 

80 

27 

12 

11

11

Aug.

26 

25 

34 

30 

25

39 

31 

26 

25 

24

24 

22 

2O 

19 

18

16 

15 

15 

15 

16

15 

15 

16 

16 

16

17 

16 

16 

15 

14 

12

Mean

38.7 

3O.9 

22.5

147

21 

23 

32.7 

144 

217 

232 

52.6 

20.4 

24.0

71.5

Sept.

12 

12 

11 

11 

13

14 

19 

21 

19 

18

18 

18 

17 

17 

15

14 

15 

22 

46 

67

36 

36 

4O 

35 

35

32 

30 

27 

26 

25

Runoff In 

aere-feet

2.38O 

1,840 

1,380

10B.600

1,290 

1.28O 

2,010 

8,540 

13,34O 

13,810 

3,240 

1,260 

1,430

51,800

Peak discharge (base. 600 gee.-ft.). No peak above base.

* Winter discharge tieasureaent made on this day.

b Stage-discharge relation affected by ice.

Note.--Ho gage-height record Dec. 12 to Mar. 7 (stage-discharge relation affected by Ice most of 

period)j discharge computed on basis of 1 discharge measurement, weather records, and records for 

stations on nearby streams.
320 SAN JUAN RIVER BASIN

Piedra River near Piedra, Colo.

Location.--Water-stage recorder, lat. 37°14 I , long. 107°20', in sec. 8, T. 34 N., R. 4 W./ 

5U feet downstream from bridge on U. S. Highway 160, three-quarters of a mile upstream 

from Yellow Jacket Creek, and lj miles north of Piedra.

Drainage area. 371 square miles.

Records available. November 1911 to July 1912, October 1939 to September 1950.

Average discharge. 11 years, 364 second-feet.

Extremes.--Maximum discharge during year, 1,110 second-feet Apr. 24 (gage height, 4.24 

feet); minimum daily, 28 second-feet Sept. 4, 5.

1911-12, 1939-50: Maximum discharge, 5,400 second-feet May 13, 1941 (gage height, 

8.0 feet, from floodmarks, site and datum then in use), from rating curve extended above 

3,040 second-feet; minimum daily, 23 second-feet Dec. 20, 1939. 

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. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

99 

83

76 

72 

70

69 

68 

64 

90 

101

88 

95 

101 

103 

99

95 

95 

104 

112 

114

97 

95 

101 

103 

99

103 

103 

101 

97 

97 

86

Nov.

88 

86 

86 

85 

85

83 

79 

77 

79 

79

85 

63 

76 

81 

83

81 

79 

77 

76 

76

74 

72 

70 

70 

72

68 

68 

68 

64 

60

Dec.

62 

51 

49 

44 

*43

46 

50 

54 

60 

48

30 

30 

40 

45 

52

60 

64 

62 

62 

62

60 

56 

58 

60 

60

56 

54 

56 

58 

60 

56

Jan.

58 

58 

56 

54 

56

58 

58 

58 

60 

58

*58 

58 

58 

58 

58

60 

62 

64 

66 

64

64 

68

70 

72 

70

64 

62 

60 

62 

70 

68

Feb.

66 

63 

76 

66 

66

70 

*76 

70 

63 

60

68 

62 

54 

63 

60

62 

62 

66 

68 

72

74 

66 

70 

74 

76

81 

97 

99

Month

Octo 

Hove 

Dece

Ca

Janu. 

Pebn 

Marc 

Aprl

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 1,300 sec . -f t . ) . No

Mar.

95 

97 

85 

83 

90

104 

90 

86 

108 

95

85 

85 

57 

72 

81

76 

90 

114 

110 

126

116 

135 

141 

172 

193

150 

122 

118 

114 

152 

196

Apr.

295 

446 

567 

468 

418

435 

440 

648 

624 

462

413 

440 

484 

523 

528

462 

452 

550 

660 

720

888 

981 

998 

995 

9_56

882 

882 

846 

864 

750

Secondfoot-days

2,880 

2,290 

1,648

167,403

1,910 

1,950 

3,438 

19,047 

20,114 

14,720 

3,920 

1,504 

1,713

75,134

May

750 

774 

804 

768 

630

518 

452 

435 

402 

430

452 

518 

462 

435 

512

528 

624 

648 

684 

642

762 

816 

834 

846 

846

756 

732 

732 

702 

756 

864

Maximum

114 

88 

64

3,320

72 

99 

196 

995 

864 

894 

184 

86 

168

-995

June

888 

894 

882 

714 

584

648 

756 

624 

567 

584

606 

636 

600 

556 

523

506 

506 

446 

391 

355

315 

330 

350 

272 

248

230 

205 

184 

168 

152

July

Minimum

64 

60 

30

30

54 

54 

57 

295 

402 

152 

68 

32 

28

28

146 

143 

135 

130 

130

132 

120 

132 

184 

148

165 

152 

132 

158 

143

132 

128 

120 

150 

132

120 

118 

110 

108 

116

103 

95 

90 

104 

76 

68

Aug.

63 

60 

68 

74 

64

68 

86 

69 

63 

54

50 

50 

47 

44 

42

41 

39

37 

37 

37

37 

36 

35 

33 

36

41 

46 

41 

38 

36 

32

Mean

92.9 

76.3 

53.2

459

61.6 

69.6 

111 

635 

649 

491 

126 

48.5 

57.1

206

Sept.

30 

30 

29 

28 

28

33 

41 

56 

46 

43

41 

41 

41 

39 

38

37 

35 

44 

85 

168

99 

77 

99 

88 

90

77 

70 

64 

60 

856

Runoff in 

acre-feet

5,710 

4,540 

3,270

332,000

3,790 

3,870 

6,820 

37,780 

39,900 

29,200 

7,780 

2,980 

3,400

149,000

peak above base.

* Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of weather records and records for stations on 

nearby streams.

Note. Stage-discharge relation affected by Ice Dec. 8 to Jan. 19, Jan. 27-2.9.
SAN JUAN RIVER BASIN 321

Los Pinos River below Snowslide Canyon, near Weminuehe Pass, Colo. 

(Locally known as Pine River)

Location.--Water-stage recorder, lat. 37°38'15", long. 107°20'00", in sec. 5, T. 39 N., 

K. 4 W., 100 feet downstream from Snowslide Canyon, 3^ miles south of Weminuehe Pass, 

and 7 miles southwest of Rio Grande Reservoir Dam.

Drainage area.--25.3 square miles.

Records available.--October 1937 to September*1941, May 1945 to September 1950 (no winter 

records I93Y-41, 1945-46).

Extremes. Maximum discharge recorded during year, 137 second-feet May 30 (gage height, 

1.82' feet); minimum daily recorded, 4.9 second-feet Sept. 15, 16, but may have been 

less during period of no gage-height record.

1937-41, 1945-50: Maximum discharge, 650 second-feet May 29, 1938, from rating 

curve extended above 300 second-feet; maximum gage height, 4.38 feet 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.

Discharge, In second-feet, water year October 1949 to September 1950

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.

9.0 

8.6 

8.2 

8.2 

8.6

8.6 

8.2 

*9.0 

9.8 

12

12 

12 

12 

11 

10 -

9.8 

10 

bll 

bll 

b9.0

1O 

11 

11 

11 

11

10 

9.4 

9.2 

9.0 

8.4 

8.2

Nov.

6.4

Dec.

6.0

Jan.

6.0

Feb.

7.0

Month

Ooto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Bay.

June 

July 

Augu 

Sept

Ha

ber. ....................................

raber. ...................................

3endar year 1949

ter year 1949-50 ...............

Mar.

 8.0

Apr.

32

Secondfoot-days

306.2 

192.0 

186.0

16,864.3

186.0 

196.0 

248.0 

960 

1,923 

1,662 

508.2 

258.2 

213.6

6,839.2

May

47 

48 

50 

46 

40

36 

34 

32 

32 

33

35 

36 

35 

37 

48

56 

68 

*84 

80 

SO

82

86 

90 

90 

90

88 

86 

84 

86 

90 

94

Maximum

12

542

94 

90 

25 

13 

16

94

June

90 

81 

78 

69 

68

76 

87 

78 

75 

75

76 

76 

66 

58 

51

48 

49 

51 

49 

39

37 -44 

38 

32

30

32

30 

28 

26 

25

July

Minimum

8.2

-

32 

25 

9.4 

5.5 

4.9

-

25 

25 

23 

21 

21

20 

22 

22 

20 

21

19 

16 

16 

16 

2O

15 15" 

15 

15 

15

13 

12

12 

13 

12

12 

12 

11 

10 

9.8 

9.4

Aug.

9.4 

9.4 

12 

10 

9.4

13

12 

10 

9.4 

9.4

11

10 

9.4 

8.6 

8.2

8.2 

8.2 

8.2 

7.4 

7.0

6.7 

6.4 

6.1 

6.4 

7.0

6.7 

6.1 

5.8 

5.8 

5.5 

5.5

Mean

9.88 

6.4 

6.0

46.2

6.0 

7.0 

8.0 

32 

62.0 

55.4 

16.4 

8.33 

7.12

18.7

Sept.

5.5 

5.5 

5.5 

5.5

5.5

6.4 

7.4 

7.4 

6.1 

5.2

5.5 

5.5 

5.2 

5.2 

4.9

4.9 

5.5 

5.5 

16 

13

3.2 

10 

9.8 

9.4 

9.0

7.8 

7.0 

6.7 

6.7 

7.8

Runoff In 

acre -feet

6O7 

381 

369

33,450

369 

389 

492 

1,900 

3,810 

3,300 

1,010 

512 

424

13,560

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by lee.

Mote. No gage-height record Oct. 21 to May 27 (stage-discharge relation affected by ice part of 

period), Aug. 13-16; discharge computed on basis of 2 discharge measurements, weather records, and 

records for stations on nearby streams.
322 SAN JUAN RIVER BASIN

Vallecito Reservoir near Bayfleld, Colo.

Location.--Float gage, 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 feet upstream from Little Red Creek 

and 11 miles northeast of Bayfleld. Datum of gage is 7,580 feet above mean sea level 

(Bureau of Reclamation bench mark). Gage heights have been reduced to elevations above 

mean sea level.

Records available.--April 1941 to September 1950. »

Extremes.--Maximum contents during year, 98,^50 acre-feet June 14, 15 (elevation, 7,654.47

 feet); minimum, 25,040 acre-feet Sept. 30 (elevation, 7,616.1 feet).

1941-50: Maximum contents, 113,100 acre-feet July 10, 1947 (elevation, 7,660.05 

feet); minimum, 1,520 acre-feet Oct. 24, 25, 1944 (elevation, 7,584.1 feet).

Remarks. Reservoir is formed by an earth- and rock-fill dam; dam cbmpleted in March 

IWI. Capacity of reservoir, 126,280 acre-feet between elevations 7,580 feet (sill 

of outlet gate) and 7,665 feet (crest of spillway). Dead storage, 3,395 acre-feet. 

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 1949 to September 1950

Date

Oct. 31...................

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

Calendar year 1949 ......

Water year 1949-50. . ....

Elevation 

(feet)

,631.0

-

-

Contents 

(acre-feet)

47,380

-

-

Change In contents 

during month 

(acre-feet)

+2,140

-7,910

+2,050

-26,400
SAN JUAN RIVER BASIN 323

Los Pinos River near Bay-field, Colo. 

(Locally known as Pine River)

Location.--Water-stage recorder, lat. 37°21', long. 107°36', in sec. 26, T. 36 N., R. 7 

W., a quarter of a mile downstream from Red Creek and 9 miles north of Bayfield. Datum 

of gage is 7,415.08 feet above mean sea level, adjustment of 1912.

Drainage area.--284 square miles.

Records available. October 1933 to September 1950 in reports of Geological Survey.

October 19K7 to September 1950 (at present site), May to September 1926 (at site 2 miles 

upstream) in reports of State engineer.

Average discharge. 23 years (1927-50), 369 second-feet.

Extremes.--Maximum discharge during year, 1,480 second-feet June 19 (gage height, 3.98 

i'eet); minimum daily, 35 second-feet Nov. 26 to Dec. 27.

1926-50: Maximum daily discharge, 5,070 second-feet May 26, 1926; minimum dally, 

3.2 second-feet Feb. 11, 1941 (result of storage in Vallecito Reservoir); minimum 

daily (prior to construction of Vallecito Reservoir), 38 second-feet 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.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

359 

359 

359 

338 

322

326 

326 

330 

338 

338

334 

334 

334 

300 

278

247 

213 

213 

220 

216

216 

216 

177 

127 

127

124 

124 

122 

124 

134 

116

Nov.

97 

97 

97 

97 

97

93 

93 

93 

93 

93

93 

93 

93 

66 

46

46 

46 

46 

46 

46

47 

47 

48 

48 

40

35

35 

35 

35 

35

Dec.

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

35 

35 

35

35 

35 

37 

37 

37 

37

Jan.

37 

37 

37 

37 

37

37 

37 

37 

37 

37

38 

38 

38 

38 

38

38 

38 

38 

38 

38

38 

38

37 

37 

37

37 

37 

37 

37 

37 

37

Feb.

37 

37 

37 

37 

37

37 

37 

37 

37 

37

37 

37 

38 

38 

38

38 

38 

38 

39 

39

39 

39 

39 

39 

39

40

41 

40

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

Julj 

AugL 

Sept

W8

lendar year 1949

ter year 1949-50 .......................

Mar.

41 

41 

41 

41 

41

41 

40 

4O 

40 

40

40 

40 

40 

40 

40

40 

40 

40 

41 

41

41 

41 

41 

41 

42

42 

41 

41 

41 

41 

41

Apr.

41 

41 

41 

41 

42

42 

42 

45 

43 

43

57 

76 

76 

78 

78

78 

78 

80 

144 

216

220 

220 

220 

220 

220

220 

275 

310 

318 

318

Secondfoot-days

7,691 

1,976 

1,093

186,256

1,159 

1,066 

1,261 

3,923 

16,343 

19,330 

18,029 

16,494 

10,548

98,913

May

346 

386 

404 

4O4 

404

4O4 

404 

404 

404 

480

54O 

540 

540 

540 

540

540 

540 

540 

540 

540

570 

588 

588 

614 

649

649 

649 

649 

649 

649 

649

Maximum

359 

97 

37

2,390

38 

41 

42

318 

649 

691 

621 

570 

440

691

June

649 

649 

649 

649 

649

649 

649 

649 

635 

635

663 

691 

691 

670 

663

663 

663 

663 

663 

628

621 

621 

621 

621 

621

621 

621 

621 

621 

621

July

621 

621 

621 

621 

621

621 

621 

621 

621 

614

558 

594

621 

621 

621

621 

621 

621 

621 

621

607 

540 

413 

413 

413

470 

546 

546 

564 

594 

600

Minimum

116 

35 

35

34

37 

37 

4O 

41 

346 

621 

413 

404 

190

35

Aug.

558 

530 

552 

570 

570

570 

558 

558 

558 

558

558 

558 

546 

546 

540

535 

535 

535 

530 

5 2O

520 

520 

520 

520

515

510 

505 

5OO 

5OO 

495 

404

Mean

248 

65.9 

35.3

510

37.4

38.1 

40.7 

131 

527 

644 

582 

532 

352

271

Sept.

377 

422 

440 

440 

440

44O 

436 

436 

431 

426

426 

422 

418 

418 

418

382 

342 

338 

338 

322

310 

300 

278 

258 

230

220 

244 

216 

190 

19O

Runoff In 

acre-feet

15,25O 

3,920 

2,170

369 , 400

2,300 

2,110 

2,500 

7,780 

32,420 

38 , 340 

35,760 

32,720 

20,920

196,200
324 SAN JUAN RIVER BASIN

Los Pinos River at Ignacio, Colo. 

(Locally known as Pine River)

Location.--Water-stage recorder, lat. 37°07'45", long. 107°37'50", in sec. 5, T. 33 N., 

R. 7 W., three-quarters of a mile upstream from Ignacio and 2 miles upstream from Rock 

Creek.

Drainage area.--448 square miles.

Records available. Apr 11 1899 to October 1903, September 1910 to December 1914, and

October 1930 to September 1950 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.

Average discharge.--{ 

vallecito Dan.

years (1910-11, 1913-40), 373 second-feet, prior to completion of

Extremes.--Maximum discharge during year, 458 second-feet June 19 (gage height, 3.24 

reet); minimum daily, 14 second-feet Nov. 30.

1910-14, 1930-50: Maximum discharge recorded, 5,570 second-feet Aug. 27, 1932 

(gage height, 6.19 feet) , from rating curve extended above 2,600 second-feet by logarithmic plotting; minimum daily observed, 0.1 second-foot Aug. 11, 1913.

Maximum flood known occurred Oct. 5, 1911 (discharge not determined), when gage was 

destroyed.

Remarks.--Records good except those for November, which are fair, and December to February, which are poor. Flow regulated by Vallecito Reservoir (see p. 322). Diversions 

above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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 

39 

30 

31

Oct.

103

128

123

100

96 

92 

92 

100 

107

107 

1C7 

105 

98 

68

70 

44

40 

37 

45

4O 

42 

44 

36 

30

36 

33 

34 

36 

34 

34

Nov.

32

24 

22 

24 

22

20 

26 

48 

52 

52

68 

64 

62 

62 

34

22 

22 

20 

20 

22

20 

20 

20 

20 

20

18 

18 

17 

15 

14

Dec.

15 

15 

Ib 

320 

40

37 

36 

840 

44 

54

48 

40 

b37 

b35 

b34

b35

b37 

b41 

b45 

b50

b50 

b49 

»b48 

b45 

b45

b46 

b50 

*b54 

b56 

b57 

b56

Jan.

b50 

b35 

' b25 

*b22 

b21

a21 

a23 

a30 

a40 

350

350 

*b51 

b50 

b45 

b45

a 50 

a 50

aso

350 

*b53

b56 

b60 

b50 

b45 

b40

b30 

*b25 

b35 

b50 

b50 

b50

Feb.

b45

b45 

D46 

*b50 

b60

b60 

b60 

b55 

b50 

*b70

66 

57 

54 

56 

54

57 

64 

71 

77 

88

98 

81 

75 

86 

94

90 

138 

116

Month

octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

96 

103 

96 

88 

88

83 

70 

B4

66 

66

64

64 

59 

61 

61

61 

62

68 

71

71 

71 

73 

73 

77

77 

71 

64 

62 

62 

62

Apr.

70 

88 

98 

92 

90

96 

100 

116 

138 

118

105 

126 

138 

138 

105

103 

94 

79 

59 

133

144 

130 

126 

105

66

52 

51 

86 

71 

66

Secondfoot -days

2,187 

900 

1,274

140,913

1,302 

1,963 

2,222 

2,983 

2,112 

3,024 

3,718 

2,500 

2,670

26,755

May

62 

81 

77 

81 

111

77 

46 

50 

46 

48

100 

90 

96 

81 

75

64 

62 

46 

40 

40

40 

57 

54 

44 

51

64 

92 

109 

79 

81 

68

Maxinum

128 

68

57

2,040

60 

138 

103 

144 

111 

164 

232 

135 

174

232

June

81 

73 

81 

90 

83

86 

81 

73 

77 

79

ee

105 

123

123 

98

90 

88 

88 

163 

164

116 

128 

138 

130 

120

107 

98 

115 

81 

77

July

71 

90 

88 

81 

81

81 

96 

116 

98 

92

70 

66 

105 

120 

107

105 

105 

105 

100 

109

114 

201 

232 

220 

217

154 

136 

130 

103 

166 

159

Aug.

135 

71 

94 

109 

105

96 

96 

86 

83 

81

77 

71 

7O 

71 

70

70 

70

75 

77 

79

73 

73 

73 

73 

75

79 

77 

73 

73 

75 

70

Sept.

61

62 

64 

61 

66

68 

71 

79 

77 

79

79 

77 

71 

70 

70

70 

68 

90 

149 

174

130 

138 

107 

147 

131

71 

61 

83 

48 

48

 - «"" a'cre^ee?

30 70.5 4,340 

14 30.0 1,790 

15 41.1 2,530

14 386 279,500

21 42.0 2,580 

45 70.1 3,890 

59 , 71.7 4,410 

51 99.4 5,920 

40 68.1 4,190 

68 101 6,000 

66 120 7,370 

70 80.6 4,960 

48 85.7 5,100

14 73.3 53,080

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records.

b Stage-discharge relation affected by ice.
SAN JUAN RIVER BASIN 325

Animas River at Howardsville, Colo.

Location.--Water-stage recorder, lat. 37°50' , long. 107° 36', In sec. 12, T. 41 II., R. 7 

W.,1,000 feet downstream from bridge on State Highway 110, 0.4 mile southwest of 

Howardsville, and half a mile downstream from Cunningham Creek. Datura of gage is 

9,616.98 feet above mean sea level, adjustment of 1912.

Drainage area.--55.9 square miles.

Records available.--May 1936 to Septenber 1950 (no winter records 1936-39).

Average discharge. 11 years (1939-50), 114 second-feet.

Extremes.--Maximum discharge during year, 764 second-feet June 11 (gage height, 3.13 

reet); minimum daily, 12 second-feet Mar. 13.

1936-50: Maximum discharge, 1,980 second-feet June 18, 1949, from rating curve extended above 950 second-feet; maximum gage height, 4.50 feet June 21, 1938; minimum 

daily discharge, 11 second-feet Feb. 27, 28, 1941, tfer. 17-20, 1945. 

Maximum flood known occurred Oct. 5, 19J1.

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

which are fair. No diversion above station.

Ratine table, water year 1949-50, except periods of Ice effect

(gage height, In feet, and discharge, in second-feet)

(Shifting-control method used Oct. 1-3)

1.1 

1.3 

1.5 

1.7

2.0 190

2.3 270

2.5 345

2.8 510

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

B 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

2Z 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

33 

32 

32 

a27 

a27

 a27 

a26 

a26 

a34 

a34

a33 

a34 

a35 

a33

a32

a32 

a31 

a33 

a33 

32

31 

30 

31 

30 

29

29 

28 

28 

28 

28 

26

Nov.

26 

26 

26 

25 

25

24 

24 

24 

25 

25

24 

25 

23 

23 

23

23 

22 

22

22 

22

22 

21 

21 

22 

20

20 

20 

20 

20 

20

Dec.

20 

20 

20 

20 

*20

20 

19 

19 

20 

19

b!7 

b!7 

b20 

b20 

b20

b!9 

b!8 

18 

18 

18

b!8 

b!8 

b!8 

b!8 

b!8

b!8 

b!7 

b!7 

b!7 

17 

b!7

Jan.

17 

17 

b!7 

b!6 

h!7

b!7 

b!7 

b!7 

b!7 

b!7

b!7 

*b!7 

b!7 

b!7 

b!8

19 

17

14 

14

13

al6 

a!7 

al6 

al6 

al6

316 

a!6 

al6 

a!6 

a!6 

a!6

Feb.

a!6 

a!6 

a!6 

a!6 

a!6

*16 

16 

b!7 

b!6 

b!5

15 

14 

b!4 

14 

b!4

b!4 

b!4 

b!4 

b!4 

15

14 

b!4 

b!4 

b!5 

16

16 

15 

14

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

1................................ .......

ter year 1949-50 .......................

Mar.

b!4 

14 

14 

16 

16

16 

bl5 

bl5 

*15 

15

b!4 

b!4 

b!2 

b!4 

15

b!5 

b!5 

15 

b!515'

bl5 

15 

15

16 

16

b!6 

b!6 

b!6 

b!6 

16 

17

Apr.

20 

29 

27 

33 

29

35 

*40 

40 

32 

29

32 

35 

49 

62 

57

53 

57 

65 

66 

81

118

148 

157 

159 

148

148 

148 

138 

136 

114

Secondfoot-days

944 

685 

575

48,854

509 

420 

468 

2,285 

5,595 

10,051 

4,078 

1,251 

826

27,687

May

119

136 

144 

146 

118

95 

84 

74 

69 

69

77 

84 

82 

95 

123

146 

198 

190 

188 

200

252 

291 

309 

302 

277

255 

277 

274 

238 

288 

395

Maximum

35 

26 

20

1,360

19 

17 

17 

159 

395 

492 

228 

59 

36

492

June

450 

492 

385 

264 

240

305 

317 

284 

305 

355

439 

433 

439 

439 

422

433 

428 

370 

325 

291

298 

280 

215 

238 

270

1 277 

277 

270 

258 

252

July

228 

ZQZ 

188 

183 

176

162 

157 

166 

166 

155

1G6 

153 

140 

131 

173

142 

134 

144 

125 

114

105 

98 

90 

84 

78

74 

75 

73 

70 

65 

61

Minimum

26 

20 

17

14

13 

14 

12 

20 

69 

215 

61 

26 

23

12

Aug.

59 

56 

51 

51 

50

53 

48 

46 

45 

42

47 

46 

44 

42 

40

39

37 

36 

35 

35

33 

32 

32 

32 

34

34 

33 

31 

28 

28 

26

Mean

30.5 

22.8 

18.5

134

16.4 

15.0 

15.1 

76.2 

180 

335 

132 

40.4 

27.5

75.9

Sept.

25 

25 

25

26

27 

29 

28 

26 

27

27 

26 

25 

23 

23

23 

23 

26 

34 

36

32 

32 

32 

51 

31

29 

28 

27 

26 

27

Hunoff in 

acre -feet

1,870 

1,360 

1,140

96,910

1,010 

833 

928 

4,530 

11,100 

19,940 

8,090 

2,480 

1,640

54,920

Peak discharge (base, 700 see.-ft.). Jane 11 (6 p.m.) 764 sec.-ft. 

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of recorded range In stage, weather records, 

and records for stations on nearby streams, 

b Stage-discharge relation affected by Ice.
326 SAN JUAN RIVER BASIN

Animas River above TPacoma., Colo.

Location.--Water-stage recorder, lat. 37°34'00", long. 107°46'30", in sec. 8, T. 38 N., R. 

8 W., 0.8 mile upstream from Tank Creek and 3.3 miles north of Tacoma.

Drainage area. 348 square miles.

Records available.--January 1946 to September 1950.

Extremes.--Maximum discharge during year, 3,120 second-feet May 30 (gage height, 5.80 feet); 

minimum daily, 84 second-feet Jan. 4.

1946-50: Maximum discharge, 9,500 second-feet June 18, 1949 (gage height, 8.86 feet), 

from rating curve extended above 5,700 second-feet; minimum daily, 60 second-feet 

Jan. 4, 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 fair. Most of flow of Cascade Creek diverted around station (25,660 acre 

feet in water year 1949-50) for power developement.

Cooperation.--Records of diversion furnished by Western Colorado Power Co.

Rating table, water year 1949-5O, except periods of ice effect

(gage height, in feet, and discharge, in second-feet)

(Shifting-control method used Oct. 17 to Dec. 5,

Dec. 11-13, Mar. 22 to Apr. 17)

2.2 70 3.7 680 

2.5 122 4.3 1,130 , 

2.8 210 4.8 1,600 

3.1 330 5.4 2,450

Discharge, in second-feet, water year Octoberl949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

171 

165 

159 

156 

150

150 

147 

147 

171 

159

159 

168 

180 

183 

180

177 

186 

201 

198 

177

174 

171 

180 

174 

168

168 

165 

159 

156 

153 

147

Nov.

144 

144 

142 

*139 

133

133 

133 

133 

133 

133

136 

130 

133 

133 

136

133 

133 

130 

128 

128

125 

125 

125 

130 

122

122 

122 

122 

120 

115

Dec.

115

106 

108 

97 

99

100 

100- 

*105 

105 

100

88 

86 

86 

88 

92

100 

105 

105 

110 

100

94 

88 

92 

94 

92

92 

92 

96 

100 

100 

100

Jan,

100 

98 

90 

84 

90

100 

105 

105 

105 

100

100 

96 

96 

98 

98

98 

98 

98 

98 

98

100 

100 

100 

105 

100

100 

100 

100 

100 

100 

100

Feb.

100 

96 

98 

100 

100

110 

110 

*102 

93 

100

113 

104 

95 

117 100 

loo

102 

102 

108 

113

111 

99 

108 

109 

111

117 

125 

122

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Wa

lendar year 1949

ember. ............. ...................

ter year 1949-50 .......................

Mar.

115 

117 

113 

113 

118

128 

115 

111 

120 

118

115 

111 

104 

108 

109

109 

115 

133 

128 

142

130 

142 

144 

159 

171

159 

144 

136 

13S 

174 

156

Apr.

204 

306 

392 

318 

345

392 

464 

590 

428

335

310 

322 

392 

512 

470

42B 

470 

620 

680 

806

1,030 

1,160 

1,170 

1,160 

1,040

1,070 

1,030 

898 

898 

785

Secondfoot-days

5,199 

3,915 

3,035

260,459

3,060 

2,965 

3,993 

19,019 

32,550 

44,634 

17,317 

6,012 

5,140

146,839

M»y

827 

906 

954 

946 

715

596 

524 

470 

428 

440

506 

566 

530 

626 

792

834 

1,090 

1,060 

1,000 

1,070

1,350 

1,540 

1,700 

1,590 

1,490

1,390 

1,510 

1,530 

1,360 

1,760 

2,450

Maximum

201 

144

115

8,000

105 

125 

174 

1,170 

2,450 

2,340 

938 

258 

294

2,450

June

2,340 

2,270 

2,090 

1,320 

.1,120

1,440 

1,560 

1,260 

1,340 

1,640

1,940 

2,000 

1,880 

1,810 

1,730

1,780 

1,850 

1,640 

1,450 

1,260

1,180 

1,310 

1,000 

978 

1,100

1,130 

1,110 

1,090 

1,030 

986

July

938 

820 

715 

715 

687

656 

708 

750 

736 

687

694 

656 

596 

560 

701

626 

560 

614 

554 

500

458 

428 

392 

370 

340

330 

326 

326 

310 

290 

274

Aug.

258 

250 

258 

246 

234

246 

234 

222 

210 

204

210 

234 

214 

201

192

186 

177 

174 

171 

165

162 

156 

156 

156 

165

174 

171 

156 

147 

144 

139

Minimum Mean

147 168 

115 130 

86 97.9

60 714

84 98.7 

93 106 

104 129 

204 634 

428 1,050 

978 1,488 

274 559 

139 194 

130 171

84 402

Sept.

133 

133 

130 

130 

130

136 

162 

183 

171 

159

156 

150 

144 

139 

133

130 

130 

153 

195 

294

230 

214 

218 

210 

210

214 

201 

192 

183 

177

Runoff in 

acre-feet

10,310 

7, 770 

6,020

516,600

6,070 

5,880 

7,920 

37,720 

64,560 

88,530 

34,350 

11,920 

10,200

291,200

Peak discharge (base, 3,600 sec . -f t .J . Ho peak above base.

* Winter discharge measurement made on this day.

Hote. Stage-discharge relation affected by ice Dec. 6-10, Dec. 14 to Jan. 10. Ho gage-height 

record Jan. 11 to Feb. 7 (stage-discharge relation affected by ice during most of period)} discharge 

computed on basis of weather records and records for nearby stations.
SAN JUAN RIVER BASIN 327

Animas River at.Durango, Colo.

Location . Water-stage recorder, lat. 37°17', long. 107°52', in sec. 20, T. 35 N., R. 9 W., 

at western Colorado Power Co.'s plant at Durango, half a mile upstream from Lightner 

Creek. Datum of gage is 6,501.57 feet above mean sea level, datum of 1929.

Drainage area. 692 square miles.

Records available. June 1895 to December 1905, January 1910 to December 1914, and October 

1M33 to September 1950 in reports of Geological Survey. June 1895 to December 1905 and 

December 1910 to September 1950 in reports of State engineer.

Average discharge. 49 years (1895-1900, 1901-5, 1910-50), 903 second-feet.

Extremes. Maximum discharge during year, 3,280 second-feet June 1 (gage height, 4.46 feet); 

- minimum daily, 171 second-feet Sept. 5.

1895-1900, 1901-5, 1910-50: Maximum discharge, 25,000 second-feet Oct. 5, 1911 (gage 

height, 11 feet), from rating curve extended above 7,000 second-feet; discharge of flood 

of June 29, 1927, 20,000 second-feet (gage height, 9.65 feet); minimum daily, 50 secondfeet Dec. 22, 1917.

Remarks. Records excellent except those for periods of Ice effect or no gage-height record, which are good. Diversions above station fo£ irrigation. Natural regulation by 

many lakes and artificial regulation for power.

Revisions. W 764: Drainage area.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

85

36 

27 

28 

29 

30 

31

Oct.

305 

281 

262 

273 

262

262 

254 

254 

258 

273

285 

285 

293 

297 

293

285 

285 

333 

368 

352

328 

319 

314 

305 

314

310 

314 

305 

289 

285 

277

Nov.

277 

277 

277 

273 

262

265 

258 

265 

269 

277

289 

269 

265 

258 

265

265 

265 

262 

262 

258

248 

262 

262 

262 

258

258 

262 

237 

244 

240

Dec.

237 

234 

224 

221 

200

206 

215 

215 

218 

226

215 

197 

200 

197 

*191

194 

222 

226 

222 

236

212 

a!85 

191 

b200 

209

a!98 

al95 

al98 

209 

218 

218

Jan.

218 

206 

218 

176 

also

*a200 

226 

222 

218 

215

215 

212 

222 

197 

218

215 

226 

226 

222 

226

226 

226 

209 

226 

222

209 

206 

212 

215 

200 

206

Feb.

 203 

194 

194 

206 

203

197 

229 

226 

209 

197

209 

222 

194 

197 

215

209 

212 

215 

218 

215

232 

222 

215 

222 

222

226 

240 

262

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949. ......................

ter year 1949-50 .......................

Mar.

250 

254 

250 

240 

232

246 

262 

246 

243 

243

232 

226 

200 

209 

222

218 

222 

232 

246 

232

262 

270 

278 

282 

310

325 

286 

282 

282 

282 

282

Apr.

305 

406 

582 

620 

608

634 

675 

854 

862 

696

614 

620 

654 

758 

814

734 

718 

897 

1,O50 

1,130

1,400 

1,690 

1,730 

1,790 

1,580

1,530 

1,540 

1,340 

1,410 

1,170

Secondfoot-days

9,120 

7,891 

6,529

393,178

6,625 

6,005 

7,846 

29,411 

42,298 

54,660 

20,901 

8,083 

7,422

206,791

Hay

1,140 

1,240 

1,300 

1,380 

1,140

951 

814 

742 

682 

668

689 

766 

758 

758 

960

1,020 

1,250 

1,430 

1,360 

1,300

1,650 

1,840 

2,140 

2,070 

2,050

1,840 

1,930 

2,060 

1,780 

1,880 

2,710

Maximum

368 

289 

237

10,700

226 

262 

325 

1,790 

2,710 

2,850 

1,100 

315 

341

2,850

June

2,850 

2,790 

2,770 

2,030 

1,56O

1,710 

2,140 

1,730 

1,640 

1,860

2,100 

2,350 

2,220 

2,190 

2,060

2,050 

2,120 

1,990 

1,790 

1,580

1,430 

1,470 

1,420 

1,160 

1,320

1,350 

1,340 

1,280 

1,200 

1,160

Minimum

July

1,100 

1,030 

879 

846 

830

790 

798 

933 

915 

846

854 

846 

782 

710 

718

790 

668 

668 

647

601

549 

510 

486 

450 

434

400 

390 

378 

362 

356 

335

254 

237 

185

138

176 

194 

200 

305 

668 

1,160 

335 

215 

171

171

Aug.

315 

305 

295 

282 

270

270 

270 

270 

262 

258

250 

266 

278 

258 

266

254 

236 

229 

240 

232

215 

240 

250 

243 

232

286 

290 

254 

266 

258 

243

Mean

294 

263 

211

1,077

214 

214 

253 

980 

1,364 

1,822 

674 

261 

247

567

Sept.

232 

222 

206 

176 

171

187 

197 

229 

 239 

229

213 

226 

223 

220 

213

213 

210 

205 

253 

341

332 

312 

320 

312 

301

312 

301 

286 

274 

267

Runoff In 

acre-feet

18,090 

15,650 

12,950

779,800

13,140 

11,910 

15,560 

58,340 

83,900 

108,400 

41,460 

16,030 

14, 720

410, 200

Peak discharge (base, 4,000 sec. -ft.). Mo peak above base.

Winter discharge measurement made on tKls day. 

a No gage-height record; discharge computed on basis of 1 discharge measurement, weather records, 

and records for stations on nearby streams, 

b stage-discharge relation affected by Ice.

207364 O - 52 - 22
328 SAN JUAN RIVER BASIN

Anlmas River near Cedar Hill, N. Mex.

Location. Water-stage recorder, lat. 37°02 I 15", long. 107°52i25", in sec. 7, T. 32 N., R. 

a w., three-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 square miles.

Records available. November 1933 to September 1950.

Average discharge. 16 years (1934-50), 997 second-feet.

Extremes. Maximum discharge during year, 3,570 second-feet June 1 (gage height, 6.62 

reet); minimum daily, 160 second-feet Dec. 13.

1933-50: Maximum discharge, 13,100 second-feet June 19, 1949 (gage height, 11.45 

feet); minimum daily, 90 second-feet 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. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

357 

332 

316 

324 

312

312 

308 

308 

312 

332

348 

348 

361 

37O 

365

348 

344 

378 

427 

441

400 

382 

370 

361 

361

357 

357 

348 

332 

324 

320

Nov.

528 

328 

328 

32S 

320

312 

304 

316 

316 

316

340 

324 

297 

282 

290

266 

282 

286 

282 

278

275 

282 

286 

286 

2S2

278 

286 

268 

268 

268

Dec.

264 

261 

254 

247 

231

222 

231 

240 

240 

257

257 

b200 

b!60 

b!7O 

b!8O

b215 

b245 

b270 

b275 

b245

b200 

*b!65 bias

b210 

b23O

b250 

b250 

b2$£ 

b250 

b25O 

b250

Jan.

b250 

b250 

b25o 

b250 

b230

*b22O 

b240 

b255 

a27O 

b280

*b285 

b285 

a28o 

b275 

b265

b25O 

a25o 

a250 

b26O 

b270

b285 

b290 

b290 

b290 

b285

b280 

*b270 

b260 

b265 

b27O 

271

Feb.

254 

b25O 

b250 

264 

257

261 

b280 

b300 

286 

261

261 

282 

257 

244 

254

254 

261 

266 

286 

282

301 

271 

257 

268 

275

275 

336 

361

Month

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 194S

Mar.

320 

328 

324 

304 

301

301 

328 

304 

301 

3O4

301 

297 

271 

261 

275

282 

282 

290 

308 

297

316 

324 

336 

328 

361

396 

365 

348 

344 

336 

340

Apr.

352 

436 

594 

770 

721

74? 

784 

944 

1,O20 

845

763 

728 

777 

869 

944

9O2 

877 

1,030 

1,200 

1,350

1,640 

1,960 

2,100 

2,100 

1,9OO

1,83O 

1,760 

1,580 

1,580 

1,400

Second - 

foot-days

10,855 

8,922 

7,154

479,153

8,221 

7,674 

9,773 

34,498 

46,746 

58,610 

23,25O 

8,716 

9,947

234,366

Peak discharge (base, 4,OOO sec. -ft.). No peak above

May

1,3OO 

1,400 

1,460 

1,520 

1,300

1,10O 

944 

845 

791 

742

742 

813 

861 

829 

979

1,130 

1.30O 

1,520 

1,46O 

1,400

1,76O 

2,030 

2,330 

2,330 

2,330

2,180 

2,180 

2,25O 

2,030 

2,030 

2,860

Maximum

441 

340 

275

11,800

290 

361 

396 

2,100 

2,86O 

3,05O 

1,200 

361 

575

3,050

base.

June

3,050 

3,050 

2,950 

2,330 

1,830

1,830 

2,330 

2,030 

1,83O 

1,960

2,180 

2.5OO 

2,330 

2,250 

2,180

2,180 

2,180 

2,100 

1,900 

1,700

1,520 

1,520 

1,580 

1,300 

1,350

1,400 

1,400 

1,350 

1,25O 

1,250

July

1,200 

1,070 

936 

894 

861

869 

861 

988 

997 

91O

919 

919 

837 

798 

784

919 

798 

784 

805 

728

658 

613 

570 

507 

529

451 

436 

422 

409 

400 

378

Minimum

308 

268 

160

160

220 

244 

261 

352 

742 

1,250 

378 

225 

198

160

Aug.

361 

340 

320 

316 

312

308 

308 

304 

301 

293

282 

290 

312 

297 

297

271 

261 

257 

268 

275

247 

240 

237 

231 

225

254 

286 

261 

261 

254 

247

Mean

350 

297 

231

1,313

265 

274 

315 

1,150 

1,558 

1,954 

75O 

281 

332

642

Sept.

244 

225 

218 

214 

198

206 

218 

247 

271 

278

268 

261 

261 

261 

264

a27O 

a270 

303 

575 

546

507 

465 

451 

456 

451

427 

427 

404 

387 

374

Runoff In 

acre-feet

21,530 

17,700 

14,190

 950,400

16,310 

15,220 

19,330 

68,430 

92,720 

116,3OO 

46,120 

17,290 

19,730

464,900

* Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of weather records and records for station at 

Farmlngton.

b Stage-discharge relation affected by Ice.
SAN JUAN RIVER BASIN 329

Animas River at Parmington, N. Mex.

Location.--Water-stage recorder, lat. 36°43'20", long. 108°12'00", in SE^ sec. 16, T. 29 

 N , H. 13 W., at bridge on State Highway 17, 0.6 mile southeast of Karmington and 

1.1 miles upstream from mouth.

Drainage area.--1,360 square miles.

Records available'. June 1904 to October 1905 (published as Animas River near Karmington), 

September i9J.i! to December 1914 and October 1930 to September 1950 in reports of Geological Survey. June 1904 to December 1931 in reports of State engineer.

Average discharge.--37 years (1912-25, 1926-50), 1,018 second-feet.

Extremes.--Maximum discharge during year, 3,030 second-feet June 1 (gage height, 4.45 

reet); minimum daily, 5.4 second-feet Sept. 1.

1930-50: Maximum discharge, 12,800 second-feet May 14, 1941 (gage height, 8.9 feet, 

from graph based on gage readings), from rating curve extended above 7,700 second-feet 

by logarithmic plotting; minimum daily, that of Sept. 1, 1950.

Maximum flood known occurred Oct. 5, 1911; stage was about 16.5 feet as determined 

from a study made in 1949.

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

and those below 150 second-feet, which are poor. Diversions above station for irrigation. Records for chemical analyses for the water year 1950 are given in WaterSupply Paper 1189.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

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

Oct.

214 

210 

201 

185 

177

165 

165 

165 

177 

197

214 

223 

227 

236 

275

275 

270 

280 

363 

a 4OO

a38O 

a37O 

a37O 

363 

351

351 

340 

345 

340 

323 

312

Nov.

318 

318 

318 

318 

312

306 

301 

296 

296 

296

328 

328 

312 

280 

270

285 

290 

29O 

285 

29O

285 

265

275 

285 

285

265 

260 

260 

231 

25O

Dec.

245 

240 

236 

218 

*214

206 

193 

201 

210 

227

b200 

b!50 

b!30 

b!40 

b!5o

b200 

285 

318 

328 

296

b28O 

b25O 

b270 

b29o 

b300

b300 

b30o 

b30O 

b300 

*b300 

b300

Jan.

306 

312 

296 

296 

231

b22O 

b250 

b300 

b350 

*b350

375 

412 

363 

375 

351

*318

306 

345 

340 

345

351 

363 

363 

363 

369

340 

340 

306 

323 

318 

296

Feb.

3O6 

323 

323 

334 

357

357 

369 

412 

418 

363

345 

328 

318 

290 

296

3O1 

312

318 

334 

345

340 

340 

340 

328 

318

312 

312

318

Month

Oeto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

mber . . . - - - - ...........

lendar year 194S .

ter year 1949-50 .......................

Mar.

323

318 

306 

296 

296

29O 

290 

301 

296 

29O

290 

296 

296 

301 

296

301 

306 

312 

3O6 

318

323 

328 

340 

340 

328

340 

345 

357 

345 

323 

323

Apr.

323

340 

444 

660 

630

600 

622 

675 

96O 

833

660 

592 

570 

6O8 

746

824 

675 

698 

923 

1.O50

1,220 

1,580 

1.85O 

1,85O 

1,780

1,6OO 

1,540 

1,450 

1,300 

1,250

Secondfoot-days

8,464 

8,698 

7,577

432,037

10,173 

9,357 

9,720 

28,853 

38,465 

51,960 

16,930 

1,543.9 

7,402.4

199,143.3

May

1,020 

1,070 

1,220 

1,270 

1,330

1,050 

860 

675 

608 

526

470 

477 

570 

548 

592

815 

914 

1,230 

1,240 

1,19O

1,270 

1,660 

1,92O 

2,050 

2,050

1,98O 

1,850 

2,050 

1,92O 

1,780 

2,260

Maximum

4OO 

318 

328

ll.OOO

412 

418 

357 

1,850 

2,260 

2,710 

914 

197 

866

2,71O

June

2,710 

2,640 

2,64O 

2,340 

1,720

1,600 

1,92O 

1,850 

1,600 

1,660

1,850 

2,120 

2,120 

2,050 

1,980

1,920 

1,920 

1,85O 

1,720 

1.52O

1,330 

1,4OO 

1,600 

1,230 

1,16O

1,2OO 

1,180 

1,140 

1,040 

950

July

914

851 

762 

682 

660

622 

698 

746 

730 

746

722 

698 

675 

622 

585

622 

615 

57O 

585 

498

438 

357 

345 

328 

296

306 

290 

255 

245 

231 

236

Minimum

165 

231 

130

18

220 

290 

290 

323 

470 

95O 

231 

6.9 

5.4

5.4

Aug.

197 

146 

8O 

82 

94

85 

55 

44 

33

20

24 

26 

22 

58 

53

114 

74 

35 

33 

39

37 

28 

2O 

14 

13

14 

39 

31 

14 

13 

6.9

Mean

273 

29O 

244

1,180

328 

334 

314 

962 

1,240 

1,73O 

546 

49.8 

247

546

Sept.

5.4 

14 

53

37 

46

20 

16 

16 

35 

88

127 

114 

131 

157 

120

142 

138 

287 

491 

866

6OO 

540 

491 

498 

470

450 

431 

363 

328 

328

Runoff in 

acre-feet

16,790 

17,250 

15.O3O

856,900

2O.18O 

18,560 

19,280 

57,230 

76,290 

103,100 

33,580 

3.O6O 

14,680

395,OOO

Peak discharge (base, 3,OOO sec. -ft.). June 1 (3:30 p.m.) 3,030 sec. -ft.

Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of records for station near Cedar Hill, 

b Stage-discharge relation affected by ice. "
330 SAN JUAN RIVER BASIN

Hermosa Creek near Hermosa, Colo.

Location.--Water-stage recorder, lat. 37°25'30", long. 107°50'15", in NW£ sec. 3, T. 36 

«., K. 9 ¥., 1 mile northwest of Hermosa and 2 miles upstream from mouth. Datum of 

gage is 6,705.88 feet above mean sea level, datum of 1929.

Drainage area. 172 square miles.

Records available. November 1911 to June 1912, April.1913 to September 1914 (fragmentary), 

and octooer 1940 to September 1950 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 1950 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.

Average discharge. 10 years (1940-50), 155 second-feet.

Extremes. Maximum discharge during year, 428 second-feet Apr. 22 (gage height, 2.28 

FeeTT; minimum daily, 15 second-feet Sept. 2-4, 15-17.

1920-28, 1940-50: Maximum discharge, 3,040 second-feet Sept. 12, 1927 (gage height, 

8.50 feet, from floodmarks, site and datum then in use), by slope-area method; minimum 

daily, 10 second-feet Feb. 6-17, 1946.

arks. Records good except those for periods of ice effect, which are fair. 

aBove station for irrigation.

Diversions

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

31 

28 

27 

26 

25

25 

25 

25 

28 

28

28 

30 

30 

29 

28

28 

35 

43 

44 

38

34 

33

36 

35 

35

35 

34 

33 

33 

33 

28

Nov.

31 

31 

*31 

31 

30

30 

30 

29 

33 

36

29 

28 

28 

29 

29

28 

28 

28 

28 

27

26 

25 

26 

28 

27

27 

26 

27 

27 

25

Dec.

25 

25 

25 

25 

*25

24 

23 

24 

25 

21

18 

17 

19 

22 

22

22 

22 

22

22 

21

19 

18 

21 

21 

21

20 

20 

20 

21 

22 

22

Jan.

21 

21 

20

17 

18

18 

18 

18 

*18 

18

19 

19 

19 

19

20

21 

20 

19 

18 

20

21 

22 

21 

20 

20

20 

20 

21 

22 

22 

21

Feb.

20 

21 

23 

25 

25

*26 

28 

23 

23 

25

27 

25 

28 

23 

24

25 

28 

30 

34

41

41 

40 

43 

42 

46

55 

64 

56

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri

June 

July 

Augu 

Sept

Wa

Lendar year 1949

h.... ...................................

ter year 1949-50 .......................

Mar.

50 

50 

46 

46 

51

*66 

64 

58 

55 

48

47 

46 

53 

42 

40

39 

47 

58 

58 

66

66 

70 

70 

82 

94

80 

69

61 

56 

59 

62

Apr.

88 

149 

206 

175 

180

184 

198 

250 

206 

168

165 

180 

198 

211 

206

188 

2EO 

275 

290 

300

350 

380 

392 

368 

326

315 

305 

295 

285 

245

Secondfoot-days

970

858 

674

71,881

611 

911 

1,799 

7,298 

6,935 

4,562 

1,384 

672 

666

27,340

May

245 

255 

270 

275 

225

184 

168

155 

139 

142

152 

162 

155 

162 

175

180 

216 

230 

235 

235

260 

270 

280 

280

285

270 

260 

255 

245 

260 

310

Maximum

44 

36 

25

1,600

22 

64 

94 

392 

310 

310 

69 

28 

43

392

June

310 

300 

310 

250 

225

240 

240 

202 

180 

172

168 

162 

155 

139 

137

131 

125 

112 

105 

96

88 

128 

99 

88 

80

74 

1 67 

64 

59 

56

July

53 

53 

52 

48 

46

46 

59 

69 

53 

62

66 

52 

48 

47 

53

47 

44 

41 

39 

38

36 

34 

34 

38 

42

35 

34 

32 

30

27 

26

Aug.

24 

24 

26 

25 

23

28 

26 

24 

23 

25

23 

26 

22 

22 

21

20 

20 

19

22 

19

18 

17 

17 

17 

21

24 

23 

20

!?16

Sept.

16 

15 

15 

15 

16

20

22 

36 

25 

22

21 

20

19 

16 

15

15 

15 

18 

25 

43

26 

26 

29 

28 

29

29 

26 

23 

21 

20

*,!»» «ean ££«.£

25 31.3 1,920 

25 28.6 1,700 

17 21.7 1,340

17 197 142,600

X

17 19.7 1,210 

20 32.5 1,810 

39 58.0 3,570 

88 243 14,480 

139 224 13,760 

56 152 9,050 

26 44.6 2,750 

16 21.7 1,330 

15 22.2 1,320

15 74.9 54,240

Peak discharge (base, 800 see.-ft.). No peak above base. 

* Winter discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 3-8, 10, 11, Dee. 13 to Feb. 4, Feb. 9, 10, 

147~l5.
SAN JUAN RIVER BASIN 331

Florida River near Durango, Colo.

Location. Water-stage recorder, lat. 37°20', long. 107°45', in sec. 4, T. 35 N., R. 8 W., 

Just downstream from Red Creek and 9 miles northeast of Durango. Datum of gage is 

7,301.88 feet above mean sea level, datum of 1929.

Drainage area. 96 square miles.

Records available.--May to July 1899, April 1901 to October 1903, September 1910 to September 19ia and October 1933 to September 1950 in reports of Geological Survey. May 

to July 1899, April 1901 to October 1903, September 1910 to September 1924, and April 

1927 to September 1950 in reports of State engineer. Station has been located at 

several different sites in this vicinity; all records equivalent.

Average discharge.--32 years (1910-12, 1917-24, 1927-50), 119 second-feet.

Extremes.--Maximum discharge during year, 486 second-feet May 30 (gage height,'2.88 feet); 

minimum daily, 1.2 second-feet Sept. 3-5.

1899, 1901-3, 1910-24, 1927-50: Maximum discharge observed, 4,640 second-feet June 

28, 1927; maximum gage height, 5.30 feet June 19, 1949; minimum daily discharge, 0.4 

second-foot Feb. 15, 1918.

Maximum flood known occurred Oct. 5, 1911.

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

small diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

18 

17 

16 

14 

15

14 

14 

13 

16 

16

17 

18 

20 

22 

22

22 

23 

28 

30 

23

25 

28 

30 

28 

26

25 

25 

25 

25 

24 

23

Nov.

23 

23 

23 

24 

25

26 

26 

26 

28 

28

28 

25 

26 

25 

25

*24 

25 

23 

22 

22

21 

20 

19 

20 

19

18 

18 

18 

17 

17

Dec.

16 

16 

17 

17 

17

17 

17 

17 

17 

17

13 

10 

11 

12 

13

14 

14 

14 

15 

15

13 

12 

12 

12 

12

12 

12 

13 

14 

15 

15

Jan.

15 

16 

12 

10 

9

*13 

13 

13 

12 

12

12 

12 

12 

12 

12

12 

 12 

13 

14 

15

15 

15 

15

15 

12

10 

9 

8 

8 

8 

8

Feb.

8 

8 

8 

9 

10

9 

8 

8 

 8 

8

9 

9 

8 

7 

7

7 

8 

8 

9 

10

11 

10 

10 

11 

12

13 

14 

15

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

16 

17 

19

21 

*22

22 

22 

20 

19 

18

18 

18 

19 

19 

18

16 

16 

18 

17 

19

18 

20 

21 

24 

26

24 

22 

21 

22 

25 

26

Apr.

34 

4*

57 

53 

54

61 

61 

84 

82 

68

67 

70 

74 

76 

74

70 

70 

89 

117 

146

195 

247 

279 

302 

292

296 

285 

272 

282 

253

Secondfoot-days

662 

684 

441

52,913.8

374 

262 

623 

4,154 

7,974 

4,720 

1,043 

165.6 

352.7

21,455.3

May

266 

285 

288 

263 

205

175 

159 

159 

152 

163

186 

222 

186 

188 

245

228 

282 

282 

269 

275

371 

358 

362 

313 

296

269 

292 

288 

250 

313 

384

Maximum

30 

28 

17

1,460

16 

15 

26 

302 

384 

343 

57 

9.0 

34

384

June

343 

302 

299

222 

184

220 

242 

188 

177 

191

202 

202 

186 

175 

159

150

139 

127 

115 

102

89 

106 

108 

90 

82

78 

70 

64 

57 

51

July

46 

42 

37 

34 

33

30 

32 

46 

45 

40

57 

50 

40 

50 

57

51 

42 

37 

35 

32

27 

24 

20 

20 

22

20 

19 

17 

14 

13 

11

Aug.

8.5 

7.5 

8.0 

7.5 

7.2

9.0 

8.5 

7.5 

7.8 

7.0

5.8 

5.8 

5.5 

6.0 

5.8

5.5 

5.2 

4.8 

4.5 

3.5

3.5 

3.4 

2.6 

2.2 

2.9

4.0 

4.5 

3.0 

3.4 

2.9 

2.3

Sept.

1.9 

1.4 

1.2 

1.2 

1.2

1.5 

3.2 

8.5 

8.5 

6.5

6.0 

6.5 

5.8 

5.2 

5.2

4.0 

4.0 

5.5 

9.4 

17

16 

18 

20 

23 

27

34 

33 

29 

25 

24

Minion, Kean a^ee£

13 21.4 j 1,310 

17 22.8 1,360 

10 14.2 j 875

145 | 105,000

8 12.1 742 

7 9.4 520 

16 i 20.1 1,240 

34 138 8,240 

152 257 15,820 

51 157 9,360 

11 33.6 2,070 

2.2 5.34 328 

1.2 11.8 700

1.2 58. S j 42,560

Peak discharge (base, 550 sec.-ft.). No peak above base.

* Winter discharge measurement made on this day.

Note. No gage-height record Dec. 4 to Mar. 4 (stage-discharge relation 

>eriod); discharge computed on basis of 4 discharge measurements, weather 

itations on nearby streams.

affected by ice part of 

records, and records for
332 SAN JUAN RIVER BASIN

La Plata River at Hesperus, Colo.

Location.--Water-stage recorder, lat. 37°17', long. 108°02', in sec. 14, T. 35 N., R. 11 

w., a short distance upstream from U. S. Highway 160 and an eighth of a mile west of 

Hesperus. Datum of gage Is 8,106.65 feet above mean sea level, datum of 1929.

Drainage area. 37 square miles.

Records available.--June to August 1904, April to August 1906, August to December 1910, and 

uctocer 1933 to September 1950 in reports of Geological Survey. June to August 1904, 

April to August 1906, August to December 1910, and May 1917 to September 1950 in reports 

of State engineer.

Average discharge.--33 years (1917-50), 47.4 second-feet.

Extremes.--Maximum discharge during year, 256 second-feet Apr. 21 (gage height, 2.64 

feet); minimum daily, 3.0 second-feet Jan. 4.

1904, 1906, 1910, 1917-50: Maximum discharge, 1,880 second-feet Sept. 28, 1941 

(gage height, 4.30 feet), by slope-area method; no flow Apr. 4, 1906. 

Maximum flood known occurred Oct. 5, 1911.

Remarks.--Records good above 50 second-feet and fair below. One diversion above station 

For~irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6

7 

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.

9.5

12 

12 

12 

12

12 

11 

12 

13 

12

11 

10 

10 

10 

10

10 

11 

12 

13 

12

11 

11 

12 

12 

12

12 

12 

12 

12 

12 

12

Nov.

12 

*13 

13 

13 

14

14 

14 

15 

15 

15

b!4 

b!3 

b!4

15 

*15

14 

14 

14 

13 

13

12

12 

12 

12 

12

11 

11 

11 

*11 

10

Dec.

10 

10 

10 

10 

10

*10 

10 

10 

9.2 

9.0

.5 

.0 

.5 

.8 

.2

.4 

.6 

.8 

.8 

.8

.0 

.0 

.5 

5.0 

4.5

5.5 

7.O 

8.0 

*8.0 

8.0 

8.0

Jan.

8.0 

8.0 

6.0 

3.0 

4.5

4.5 

5.0 

5.6 

5.6 

5.4

5.8 

5.2 

5.5 

5.0 

5.5

5.2 

6,O 

6.2 

*6.5 

7.0

7.0 

6.8 

6.6 

6.4 

5.6

5.0 

5.6 

6.2 

6.4 

6.0 

5.0

Feb.

5.8 

5.4 

6.0 7.0' 

8.0

8.0 

7.8 

*7.1 

7.0 

7.0

7.4 

6.8 

6.O 

6.5 

7.0

7.2 

7.4 

7.6 

7.6 

7.0

6.6 

6.2 

6.6 

6.8 

7.1

7.4 

7.4 

7.4

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

7.4

7.4 

*7.4 

7.6 

8.0

7.4 

7.0 

7.6 

8.0 

8.0

8.0 

7.0 

6.O 

6.6 

7.0

7.4 

7.6 

8.0 

8.0 

8.0

7.6 

8.0 

8.6 

9.2 

10

11 

11 

10 

11 

14 

16

Apr.

20 

35 

50 

*60 

70

78 

80 

104 

84 

68

63 

58 

58 

65 

68

63 

70 

107 

128 

150

192 

205 

201 

195

164

162 

162 

148 

142 

122

Secondfoot-days

356.5 

391

239.1

24,030.3

180.1 

195.1 

265.8 

3,172 

2,641 

1,860 

560.6 

220.6 

207.8

10,289.6

Peak discharge (base, 230 sec. -ft.). Apr. 21 (12 p.m.

May

134 

134 

139

117 

84

63 

47 

37 

29

26

35

60 

65 

70 

74

SQ 

100 

100 

114 

114

136 

120 

102 

80 

84

84 

82 

78 

68 

84 

101

Maximum

13 

15 

10

743

8.0 

8.0 

16 

205 

139 

140 

32 

10 

10

205

June

117 

140 

125 

94 

96

114 

111 

91 

91 

96

SI 

39 

35 

29 28 '

32

'SI28 

24 

21

18 

30 

61 

51 

51

51 

48 

42 

39 

36

July

32 

30 

26 

18

18

20 

23 

27 

24 

20,

25 24- " 

20 

19 

17

16

16 17 ' 

16 

16

16 

15 

13 

13 

13

12 

12 

11 

11 

11 

9.6

Aug.

9.0

8.5 

8.5 

8.5 

8.5

10 

9.0 

9.0 

. 8.5 

8.5

. *.5 

9.0 

7.6 

7.2

6.7

6.7 

6.2 

6.2 

5.8 

5.8

5.8 

5.8 

5.8 

5.4 

6.2

7.2 

6.7 

5.8 

5.4 

4.4 

4.4

Minimum Mean

9.5 11.5 

10 13.0 

4.0 7.71

3.5 65.8

3.0 5.81 

5.4 6.97 

6.0 8.57 

20 106 

26 85.2 

18 62.0 

9.6 18.1 

4.4 7.12 

4.4 6.93

3.0 28.2

) 256 sec. -ft.

Sept.

4.4 

4.9 

4.9 

4.9 

5.8

7.6 

8.0 

7.6 

6.2 

6.7

6.2 

5.4

5.4 

4.9 

4.9 -

5.4 

6.2 

6.7 

10 

9.0

7.6 

8.5 

7.6 

8.0 

8.0

8.0 

8.0 

9.0 

9.0 

9.0

Huhoff in 

acre-feet

707 

776 

474

47,660

357 

387 

527 

6,290 

5,240 

3,690 

1,110 

438 

412

20,410

* Winter discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 27, 28, Dec. 7 to Apr. 4 (stage-discharge relation affected by 

Ice most of period); discharge Interpolated or computed on basis of 5 discharge measurements, weather 

records, and unpublished records for diversion from West Mancos River to Jackson Gulch Reservoir.
SAN JUAN RIVER BASIN 333

La Plata River at Colorado-New Mexico State line

Location. Water-stage recorder, lat. 37°00', long. 108°11', in sec. 10, T. 32 N., R. 13 

w., 300 feet south of Colorado-New Mexico State line and 3 miles north of Pendleton, 

N. Mex. Datum of gage is 5,975.15 feet above mean sea level, datum of 1929.

Drainage area. 331 square miles.

Records available.--October 1933 to September 1950 in reports of Geological Survey. February lazu to September 1950 in reports of Colorado State engineer.

Average discharge. 30 years (1920-50), 37.2 second-feet.

Extremes. Maximum discharge during year, 2,980 second-feet Sept. 19 (gage height, 9.00 

reetj, from rating curve extended above 450 second-feet on basis of slope-area determination at gage height 11.36 feet; no flow June 1, 15-21, July 6, 7, 9-13.

1920-50: Maximum discharge, 4,750 second-feet Aug. 24, 1927 (gage height, 11.36 

.feet), by slope>-area method; no flow at times in many years.

Remarks. Records good above 10 second-feet and fair below except those for periods of ice 

errect or no gage-height record, which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

5.1 

4.8 

4.5 

4.8 

4.5

4.5 

5.1 

4.5 

4.8 

5.4

5.4 

5.7 

5.7 

5.1 

4.2

4.2 

4.2 

3.6 

3.3 

4.2

4.2 

4.2 

6.0 

6.4 

6.4

6.4 

6.0 

6.0 

6.4 

6.4 

6.4

Nov.

6.7 

7.4 

7-.0 

6.7 

6.7

6.7 

7.4 

7.4 

7.8 

8.1

8.4 

8.1 

7.4 

8.1 

8.8

9.2

9.2 

9.2 

10 

10

10 

12 

11 

10 

9.5

9.5 

9.5 

9.5 

*10 

10

Dec.

10 

10 

10 

blO 

b6.4

*b6.4 

b6.7 

b9.5 

b9.5 

blO

8 

5 

4 

3.5 

3.5

4

4 

5 

6 

6

4 

3 

3 

5

3

3 

5 

8 

*10 

12 

12

Jan.

15 

17 

*16 

5 

3

3 

5 

6 

6 

3

5 

4

4 

3 

4

3 

*7 

9 

*10 

13

15 

16 

14 

14 

14

b5 

b6 

b8 

15 

16 

*b!4

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

Feb.

b!2 

blO 

b!5 

19 

14

16 

21 

*21 

18 

18

18 

18 

18 

18 

18

17 

17 

20 

20 

19

19 

18 

17 

17 

18

20

31 

32

mber ... . ...... ... ......

lendar year 1949 

ary

ter year 1949-50 .......................

Mar.

28 

32 

24 

24 

27

27 

20 

18

18 

18

17 

18 

16 

15 

15

15 

15 

15 

15 

14

13 

14 

16 

16 

17

18 

18 

16 

16

n 

n

Apr.

18 

19 

23 

23 

18

18 

18 

17 

22 

20

29 

37 

44 

45 

43

45 

36 

53 

71 

78

105 

95 

77 

92 

68

81 

99 

84 

91 

81

Secondfoot-days

158.4 

261.3 

205.5

17,737.2

278 

519 

569 

1,550 

928.8 

1,211.4 

174.3 

124.8 

555.2

6,535.7

Peak discharge (base, 300 sec. -ft.). Sept. 5 (8 p.m.

May

46 

6.0 

1.9 

2.5 

2.3

1.9 

2.5 

1.6 

1.1 

1.1

1.1 

36 

63 

70 

75

75 

84 

97 

110 

105

107 

31 

1.6 

.8 

.8

.8 

.9 

1.0 

.9 

.7 

.3

Maximum

6.4 

12 

12

798

17 

32 

32 

105 

110 

105 

24 

5.JL 

256

258

June

0 

92 

102 

77 

71

91 

105 

75 

75 

75

75 

12 

.8 

.6 

0

0 

0 

0 

0 

0

0 

103 

15 

38 

39

> 39 

39 

33 

28 

26

July

24 

23 

18 

7.4 

.6

0 

0 

.1 

0 

0

O 

0 

0 

1.2 

4.5

3.3 

4.2 

4.8 

4.8 

6.7

7.0 

6.7 

7.4 

6.4 

12

7.8 

6.4 

5.4 

4.5 

4.2 

3.9

Minimum

3.3 

6.7 

3

1.2

3 

10 

13 

17 

.3 

0 

0 

3.3 

2.6

0

Aug.

3.3 

3.6 

4.2 

4.5 

4.2

4.8 

4.5 

3.9 

3.3 

3.3

3.9 

4.2 

3.6 

3.9 

3.9

3.9 

3.3 

3.6 

3.6 

4.2

4.2 

4.2 

4.2 

4.2 

4.2

4.5 

5.1 

4.5 

4.2 

4.2 

3.6

Mean

5.11 

8.71 

6.63

48.6

9.0 

18.5 

18.4 

51.7 

30.0 

40.4 

5.62 

4.03 

18.5

17.9

405 sec. -ft.; Sept. 19 (7 p.m.)

Sept.

3.9 

3.0 

2.6 

2.8 

46

10 

6.7 

4.5 

3.9 

4.5

4.8 

4.2

4.8 

4.5 

4.5

3.3 

3.6 

52 

256 

53

9.8 

9.8 

9.0 

7.5 

8.7

7.5 

7.2 

6.6 

5.7 

4.8 

-

Runoff in 

acre-feet

314 

518 

408

35,180

551 

1,030 

1,130 

3,070 

1,840 

2,400 

346 

248 

1,100

12,960

2,980 sec.- ft-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 11 to Jan. 22 (stage-discharge relation affected by ice most of 

period) June 14, July 8; discharge computed on basis of 5 discharge measurements and weather records.
334 SAN JUAN RIVER BASIN

La Plata River near Farmington, N. Mex.

Location. Water-stage recorder, lat. 36°44«30", long. 108°14'45", In SW^ sec. 7, T. 29 N. 

K. 13 W., 1,800 feet upstream from mouth and 2j miles northwest of Farmington.

Records available. March 1938 to September 1950. 

Average discharge.--12 years, 34.6 second-feet.

Extremes. Maximum discharge during year, 1,050 second-feet Sept. 20 (gage height, 5.40 TeeTT, from rating curve extended above 200 second-feet by logarithmic plotting; no 

flow at times.

1938-50: Maximum discharge and gage height not determined; no flow for extended 

periods.

Remarks. Records poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

1 

1 

1 

2 

1

2 

1 

1 

2 

5

5 

0 

0 

0 

0

0 

1

1 

5 

7

2 

1 

5 

13 

9

9 

8

a

8 

9 

9

Nov.

10 

11 

8 

2 

2

2 

2 

2 

2 

2

5 

3 

3 

2 

2

3 

3 

3 

3 

4

4 

4 

5 

5 

2

2 

4 

3 

5 

4

Dec.

5 

5 

5 

4 

4

3 

5 

*6 

7 

6

3

1 

bl 

b4 

*b7

b7 

b!2 

b5 

bl 

bl

bl 

bl 

bl 

b5 

b!9

b!6 

b!4 

b!7 

b22 

*b20 

b!8

Month

Octo 

Nove 

Deee

Ca

Janu 

Febri 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

Jan.

b!8 

b!8 

al6 

a8 

*a!6

a!8 

a!8 

b20 

b20 

b20

b20 

*b20 

b!8 

al8 

aZO

a30 

a 40 

a50 

*73 

36

24 

22 

16 

21 

26

18 

19 

23 

27 

23 

19

Feb.

21 

20 

26 

28 

28

21 

31 

39 

23 

23

44 

45 

36 

27 

23

20 

18 

20 

21 

22

22 

18 

18 

17 

17

18 

18 

36

lendar year 1949

ter year 1949-50 .......................

Mar.

35 

38 

31 

24 

23

24 

22 

19 

20 

12

5 

5 

3 

8 

3

4 

7 

6 

5 

7

5 

5 

3 

3 

3

4 

4 

2 

2 

2 

0

Apr.

0 

0 

0 

0 

0

0 

0

0 

0 

Q

0 

 0 

1 

0

o

0

o

0 

0 

0

2 

9 

1 

0 

1

1 

1 

1 

1

1

Secondfoot-days

117 

112 

226

12,209

735 

700 

 334 

19 

13 

139 

76 

2 

487

2,960

Bay

1 

2 

1 

1 

1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0

1 

1

4

0 

0 

0

0 

0

1

0 

0 

0

Maximum

13 

11 

22

380

73 

45 

38 

9 

4 

69 

31 

2 

259

259

June

0 

0 

0 

0

0

0 

0 

0 

0

1 

1

8 

4 

2

1

1

1 

2 

1 

1

1 

69 

30 

10 

3

2 

1 

O 

0 

0

July

0 

0 

0 

0 

0

23 

31 

7 

1 

0

0 

0 

0 

0 

0

0 

O 

0 

0 

0

0 

0 

0 

0 

0

6 

5 

1 

1 

1 

0

Minimum

0 

2 

1

0

8 

17 

0 

0 

-0 

0 

O 

0 

0

0

Peak discharge (base, 500 sec. -ft.)'. June 22 (4:30 p.m.) 930 see. -ft.; July

Aug.

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 

0 

0 

X)

Mean

3.8 

3.7 

7.3

33.4

23.7 

25.0 

10.8 

.6 

.4 

4.6 

2.5 

.1 

16.2

8.1

6 (11:30 p.

Sept.

0 

0 

O 

0 

0

0 

0 

5 

1 

0

0 

0 

0

o 

o

0 

0

11

162 

259

15 

10 

4 

7 

3

2 

2 

2 

2 

2

Runoff in 

acre -feet

232 

222 

448

24,200

1,460 

1,39O 

662 

38 

26 

276 

151 

4.O 

966

5,880

m. ) 623

(3 a.m.; 569 see.-ft.| Sept. 20 (2:30 a.m.) 1,05O sec.-ft. 

* Winter discharge measurement made on this day.

a No gage-height record} discharge computed on basis of. 1 discharge measurement and weather records 

b Stage-discharge relation affected by Ice.
SAN JUAN RIVER BASIN 335

Cherry Creek near Red Mesa, Colo.

Location.--Water-stage recorder, lat. 37°07', long. 108°12', in sec. 7, T. 33 N., R. 12 

w., a quarter of a mile upstream from mouth and 2 miles northwest of Red Mesa. Datum 

of .gage is 6,466.46 feet above mean sea level, adjustment of 1912.

Drainage area. 66 square miles.

Records available. October 1933 to September 1950 in reports of Geological Survey. March 

J.92S to September 1950 in reports of State engineer.

Average discharge.--22 years (1928-50.), 9.51 second-feet.

Extremes. Maximum discharge^ during year, 348 second-feet Sept. 19 (gage height, 4.15 

reet), from rating curve extended above 90 second-feet on basis of slope-area determination at gage height, 4.95 feet; no flow for many days.

1928-50: Maximum discharge, 1,480 second-feet Aug. 25, 1940 (gage height, 5.90 

feet, site and datum then in use), from rating curve extended above 100 second-feet on 

basis of slope-area determination at gage height, 4.5 feet; no flow at times in many 

years.

Remarks.--Records poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3

4 

5

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

Oct.

0.1 

.1 

.1

.1 

.1

O 

0 

' .2 

.1 

.2

.3 

.3 

.4 

.3 

.3

.3 

.2 

.2

.1 

.5

.5 

1.2 

1.0 

1.0 

1.0

1.0 

.9 

.8

1.0 

1.0 

.7

Nov.

0.8 

.8 

.6 

.8 

.8

1.0 

1.2 

1.5 

1.3 

1.3

1.7 

1.4 

1.2 

1.6 

*2.5

2.2 

2.0 

2.0 

1.8 

1.6

1.6 

1.6 

1.5 

1.9 

1.8

1.7 

1.8 

1.8

1.7 

1.7

Dec.

U)

1.2

Jan.

, 1.0

Feb.

2.0

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

8.0 

9.0 

*7.6 

9.3 

13

11 

6.0 

5.2 

6.0 

5.5

4.9 

4.5 

4.1 

3.1 

4.8

4.1 

3.7 

3.8 

4 1 

4.0

4.3 

3.8 

4.1 

4.2 

4.8

5.5 

4.1 

4.5 

5.3 

5.2 

5.6

Apr.

7.1 

9.8

15 

16 

15

17 

19 

23 

27 

22

18 

17 

19 

18 

17

16 

15 

18 

20 

22

28 

36 

33 

30 

21

19

16 

15 

12 

9.6

Secondfoot-days

14.0 

45.4 

37.2

4,670.7

31. 0 

56.0 

173.1 

570.5 

77.2 

86.2 

9.1 

0 

71.8

1,171.5

May

4.0 

1.4

.7 

.7 

1.1

5.6 

4.5 

2.6 

2.0 

1.7

2.4 

6.0 

4.5 

3.6 

3.2

3.0 

2.9 

2.8 

2.6 

2.4

2.4

1.9 

1.2

l.o

1.0

2.0 

2.8 

2.0 

2.0 

1.8 

1.6

Maximum

1.2

2.5

9O

13 

36 

6.0 

8.2 

1.8 

0 

67

67

June

1.6 

8.2 

5.2 

5.2 

5.5

5.0 

4.2 

3.7 

3.8 

3.6

3.6 

3.4 

1.8 

1.4

1.0

1.0 

.7 

.5 

.7 

.6

.5 

5.0 

3.0 

2.3 

3.4

2.8 

2.5 

2.1 

2.1 

1.8

July

1.8 

l.S 

1.7 

1.2 

.7

.5 

.2 

.Z 

.2 

.2

.2 

.1 

.1 

0 

0

0

o

0 

0 

0

0 

.2 

0 

0

o

0 

0 

0

o 

o 

o

Minimum

0 

.8

0

3.1 

7.1 

.7 

.5 

0 

O 

O

0

Aug.

Mean

0.45 

1.51 

1.2

12.8

1.0 

2.0 

5.58 

19.0 

2.49 

2.87 

.29 

0 

2.39

3.21

Sept.

0 

0 

0 

0 

1.8

0 

0

0 

0

0

0 

0

0

o

0 

0

o

.3

67 

2.0

.4 

.1

.1 

.1

0

O

0 

0 

0 

0

Runoff In 

acre-feet

28

90 

74

9,260

61 

111 

343 

1,130 

153 

171 

18 

0 

142

2,320

Peak discharge (base, 10O see.-ft.). Sept. 19 (2 a.m.) 348 see.-ft.

* Winter discharge measurement made on this day.

Note.--No gage-height record Oct. 1-5, 19-21, Nov. 29 to Mar. 3 (stage-discharge relation affected 

by lee during most of period), May 24-26, June 22, 23, July 6-10; discharge computed on basis of 3 

discharge measurements, weather records, and records for La Plata River at Colorado-New Mexico State 

line.
336 SAN JUAN RIVER BASIN

West Mancos River near Mancos, Colo.

Location.--Water-stage recorder, lat. 37°22'30", long. 108°15'20", In sec. 14, T. 36 N., 

K. 13 W., if- miles upstream from confluence with East Mancos River (formerly Middle 

Mancos River) and 3g- miles northeast of Mancos.

Drainage area.. --42.1 square miles.

Records available.--September 1910 to December 1911, April 1938 to September 1950 (no 

winter records most years).

Extremes.--Maximum discharge during year, 166 second-feet May 31 (gage height, 2.34 feet); 

minimum daily recorded, 0.6 second-foot Apr. 30.

1910-11, 1938-50: Maximum discharge, 1,080 second-feet M&y 13, 1941 (gage height, 

3.89 feet), from rating curve extended above 260 second-feet; minimum daily recorded, 

that of Apr. 30, 1950.

Remarks. Records good above 15 second-feet and fair below except those for periods of no 

gage-height record, which are poor. Diversions above station for irrigation. During 

water-year 1950, 6,540 acre-feet were diverted to storage reservoir above station, and 

5,140 acre-feet were returned to river above station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

22 

18 

16 

15 

11

5.6

5.6 

5.9 

9.1 

8.3

8.3 

9.1 

8.7 

8.0 

8.0

8.3 

9.5 

15 

16 

11

9.5 

10 

9.9 

9.9 

9.9

9.9 

9.5 

9.5 

9.5 

9.5 

8.7

Nov.

8. 

8. 

8.

8. 

9.

9.1 

8.7 

8.3 

8.3 

8.0

9.1 

11 

15 

16 

11

11

10 

9.1 

9.9 

8.7

8.0 

8.0 

7.0 

10 

9.0

7.0 

7.0 

8.0 

8.0 

6.0

Dec. Jan. Feb.

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year

Mar. Apr.

8.0 

8.0 

9.1 

5.9 

6.2

9.9 

12 

25 

19 

11

8,3 

8.7 

11 

13 

12

12

14 

18 

16 

17

20 

20 

16 

13 

8.0

8.0 

5.6 

3.1 

2.2 

.6

Secondfoot -days

324.2 

£75.1

-

340.6 

2,001 

2,419 

1,345 

1,025 

596.7

-

May

16 

21 

22 

23 

20

18 

14 

42 

68 

60

62 

63 

59 

59 

59

59 

63 

68 

71 

72

90 

96 

96 

88 

96

92 

92 

92 

83 

101 

136

Maximum

22

16

-

25 

136 

136 

55 

46 

32

-

June

126 

134 

136 

94 

83

104 

113 

84 

79 

83

92 

90 

88 

84 

79

75 

72 

68 

68 

69

61 

83 

59 

60 

60

57 

55 

55 

55 

53

July

49 

47 

48 

45 

44

46 

54 

55 

47 

46

51 

47 

44 

42 

39

38 

36 

37 

38 

37

37 

35 

34 

36 

44

45 

45 

45 

45 

45 

44

Minimum

5.6 

6.0

-

.6 

14 

53 

34 

23 

6.2

-

Aug.

46 

46 

44 

44

42

42 

42

40 

39 

38

37 

36 

35 

34 

31

29 

27 

26 

25 

24

23 

25 

26 

24 

25

26 

29 

29 

30 

31 

30

Mean

10.5 

9.17

-

11.4 

64.5 

80.6 

43.4 

33.1 

19.9

-

Sept.

30 

29 

25 

22 

22

24 

25 

30 

32 

29

29 

27 

26 

22 

20

19 

18 

18 

17 

25

22 

16 

10 

10 

8.0

9.2 

10 

9.2 

7.1 

6.2

Runoff in 

acre-feet

643 

546

-

676 

3,970 

4,800 

2,670 

2,030 

1,180

-

Note. No gage-height record Nov. 22-30, Apr. Ij discharge computed on basis of weather records.
SAN JUAN RIVER BASIN 337

East Mancos River near Mancos, Colo.

Location. Water-stage recorder, lat. 37°22'10", long. 108°13'35", in tffi£ sec. 24, T. 36 

N., R. 13 W., 800 feet upstream from Middle Mancos River and 4 miles northeast of 

Mancos.

Drainage area. 11.1 square miles.

Records available. March 1938 to September 1950 (no winter records most years).

Extremes.--Maximum discharge during year, 64 second-feet Apr. 22 (gage height, 1.04 feet); 

minimum daily recorded, 0.2 second-foot Aug. 21-24.

1938-50: Maximum discharge, 642 second-feet May 8, 1941 (gage height, 2.67 feet), 

from rating curve extended above 130 second-feet; no flow Aug. 17-27, 1939, Sept. 25, 

26, Oct. 3, 1945.

Remarks. Records good above 5 second-feet and fair below except those for periods of ice 

effect or no gage-height record, which are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

3.3 

2.8 

2.6 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.0

2.0 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.8 

3,1 

2.0

2.8 

2.3 

2.6 

2.0 

*1.8

1.8 

1.8 

2.0 

2.0 

2.0 

1.8

Nov.

2.0 

2.0 

2.0 

2.0 

2.0

1.5 

1.3 

1.3 

1.3 

1.3

1.3 

tl.4 

bl.5 

1.5 

1.5

1.5 

1.5 

2.0 

2.0 

2.0

*1.8 

al.8 

aS'.O 

a2.0 

al.8

al.9 

al.8 

al.9 

a2.0 

al.9

Dac. Jan. Feb.

Month

Octo 

Hove 

Dace

Ca

Janu 

Febr 

Marc 

Aprl

Mfav

June 

July 

Augu 

Sept

Wa

lendar year

uary . .... ...

ter year .......................

Mar.

a3.2 

a3.5 

a3.1 

a3.3 

a3.7

*3.6 

t>3.3 

b3.4 

3.1 

3.1

3.1 

b2.5 

bl.9 

t>2.1 

2.3

2.8 

2.8 

2.8 

3.3 

3.6

3.1 

3.1 

3.3 

3.3 

4.1

4.6 

5.1 

4.6 

3.6 

3.6 

3.6

Apr.

5.6 

10 

14 

12 

12

13 

14 

22 

17 

14

12 

12 

14 

16 

*17

16 

19 

31 

37 

38

50 

55 

52 

52 

44

43

43 

37 

37 

31

Secondfoot-days

71.1 

51.8

-

102.5 

789.6 

613.4 

288.8 

74.1 

25.4 

34.7

_

Peak discharge (base, 60 sec. -ft.). Apr. 22 (1 a.m.)

May

33 

33 

35 

34 

26

23 

17 

13 

9.2 

9.2

12

14 

16 

16 

17

15 

22 

22 

25 

22

25 

24 

24 

16 

18

18 

15 

14 

11 

13 

22

Maximum

3.3 

2.0

-

5.1 

55 

35 

19 

4.1 

1.8 

3.3

_

64 sec. -ft.

June

17 

19 

17 

9.2 

8.0

12 

12 

8.5 

8.5 

10

11 

10 

10 

9.2

11

12 

12 

14 

9.2 

7.0

6.0 

12 

9.2 

7.0 

6.5

5.1 

4.6 

4.1 

4.1 

3.6

July

3.6 

3.1 

2.8 

2.8 

2.8

2.8 

3.1 

4.1 

3.3 

2.8

3.1 

2.6 

2.0 

2.0 

2.3

3.3 

3.1 

2.6 

2.6 

2.3

1.8 

1.8 

1.5 

1.5 

1.5

1.5 

1.8 

1.5 

1.5 

1.3 

1.3

Minimum

1.8

1.3

-

1.9 

5.6 

9.2 

3.6 

1.3 

.2 

.3

_

Aug.

1.0 

1.0 

1.0 

1,0 

1.0

1.8 

1.5 

1.3 

.9 

.6

1.0 

1.8 

1.0 

.8

.6

.6 

.6 

.6 

.6 

.4

.2 

.2 

.2 

.2 

.5

.7 

1.5 

.9 

.8 

.7 

.4

Mean

2.29 

1.73

-

3.31 

26.3 

19.8 

9.63 

2.39 

.82 

1.16

_

Sept.

0.3 

.5 

.4 

.4 

.6

.8

.9 

.9

.a

1.0

1.3 

1.0 

.9 

.9 

.9

.9

-9 

1.3 

1.8 3.31

2.6 

2.3 

1.5 

1.8 

1.5

1.3 

1.0 

.9 

1.0 

1.0

Runoff In 

acre -feet

141 

103

-

203 

1,570 

1,220 

573 

147 

50 

69

_

* Winter Discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of weather records and records for stations 

on nearby streams.

b Stage-discharge relation affected by ice.
338 SAN JUAN RIVER BASIN

Middle Mancos River near Mancos, Colo.

Location.--Water-stage recorder, lat. 37°22'15", long. 108°13'35"., in SE£ sec. 13, T. 36 

M., K. 13 W., 1,300 feet upstream from mouth and 4 miles northeast of Mancos.

Drainage area. 13.7 square miles.

Records available. March 1938 to May 1941, October 1941 to September 1950 (no winter 

records most years).

Extremes.--Maximum discharge during year, 61 second-feet Apr. 22 (gage height, 1.55 feet); 

no now Aug. 20 to Sept. 8.

1938-50: Maximum discharge, 297 second-feet May 15, 1944, from rating curve extended above 78 second-feet; maximum gage height, 2.85 feet June 18, 1949; no flow at times 

in 1939, 1942-43, 1945, 1950.

Remarks.--Records fair. Three small diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

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 

3O 

31

Oct.

0.3 

.3 

.3 

.3 

.3

.3 

.3

.5 

.5 

.5

.5 

.5 

1.4 

2.0 

1.1

1.4

1.6 

1.2 

1.2 

1.1

1.3 

1.2 

1.1 

1.1 

.9 

.7

Nov.

0.7 

.7 

.7 

.7 

.8

.8 

.6 

.8 .'7 

17

.7 

1.1 

.7 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

a. 2 

a. 2 

a. 2 

a. 2

a. 2 

a. 2 

a. 2 

a. 2 

a. 2

Dec. Jan. Feb.

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 

ary

ter year .......................

Mar. Apr.

s.d

7.4

10

11 

11

12 

13 

18 

14 

12

12 

14

16 

18 

18

17 

22 

33 

37 

41

43 

50 

43 

39 

30

29 

29 

25 

22 

18

Secondfoot -day a

23. 9 

13.1

-

669.4 

360.7 

140.4 

46.4 

4.0 

8.1

-

May

17 

16 

17 

16 

16

15 

14 

12 

9.7 

8.1

8.4 

12 

11 

11 

12

11 

12 

12 

12 

12

12 

12 

12 

11 

11

10 

8.1 

8.1 

7.8 

7.1 

7.4

Maximum

2.0 

1.1

-

50 

17 

8.7 

2.6 

.4 

.5

-

June

7.1 

7.8 

8.7 

6.8 

5.8

5.3 

5.8 

4.8 

4.1 

4.3

4.3 

4.0 

3.1 

2.9 

3.3

5.6 

5.3 

4.8 

4.3 

3.8

3.8 

5.3 

5.0 

4.6 

4.1

3.8 

3.4 

3.1 

2.9 

2.5

July

2.3 

2.2 

2.1

2.1 

1.8

2.0 

2.5 

2.6 

2.3 

2.1

2.2 

1.7 

1.6 

1.6 

1.4

1.3 

1.2 

1.2 

1.2 

1.2

1.1 

1.1 

1.1 

1.1 

1.2

1.1 

1.1 

.8 

.4 

.4 

.4

Minimum

0.3 

.2

-

5.0 

7.1 

2.5 

.4 

0 

0

-

Aug.

0.4 

.4 

.4 

.3 

.2

.2 

.2 

.2

.2 

.1

.2 

.2 

.2 

.2 

.2

.1 

a.l 

a.l 

a.l 

0

0 

0 

O 

0 

0

0 

0 

0 

0 

O 

0

Mean

0.77 

.44

-

22.3 

11.6 

4.68 

1.50 

.13 

.27

-

Sept.

0 

0 

0 

0 

0

0 

0 

0 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.2 

.2 

.3 

.4

.4

.5 

.5 

.5 

.5

.5 

.5 

.4 

.4 

.4

Runoff in 

acre-feet

47 

26

-

1,330 

715 

278 

92 

7.9 

16

-

scharge (bas 

ge-height re

e. 50 see. -ft.). Apr. 22 (7 p.m.) 61 sec. -ft.

a No gage-height record; discharge computed on basis of weather records and records for stations on 

nearby streams.
PARIA RIVER BASIN 339

Paria River at Lees Ferry, Ariz.

Location.--Water-stage recorder, lat. 36°52'15", long. 111°36'30", in NW^NE^ sec. 13, T. 

4U W., R. 7 E., half a mile upstream from mouth and 1 mile northwest of Lees Ferry. 

Datum of gage is 3,123.4 feet above mean sea level, datum of 1929.

Drainage area. 1,570 square miles.

Records available.--October 1923 to September 1950.

Average discharge. 27 years, 33.1 second-feet.

Extremes.--Maximum discharge during year, 1,340 second-feet July 19 (gage height, 8.17 

fee t); minimum, 1.7 second-feet Dec. 24; minimum daily, 3.3 second-feet June 23, 25.

1923-50: Maximum discharge, 16,100 second-feet Oct. 5, 1925 (gage height, 17.5 

feet), by float-area method; no flow during periods in winters of several years prior 

to 1928.

Remarks. Records good except those for periods of ice effect or fragmentary or no gageneignt record, which are fair. Diversions above station for irrigation. Records of 

sediment loads for the water year 1950 are given in Water-Supply Paper 1189.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

36 

24 

18 

15 

12

10 

8.6 

7.8 

7.5 

7.3

12 

15 

14 

14 

14

14 

14 

12 

20 

60

34 

28 

26 

23 

22

22 

22 

20 

18 

16 

16

Nov.

16 

16 

16 

16 

16

16 

16 

16 

16 

16

17 

22 

18 

17 

18

17 

17 

16 

16 

16

14 

14 

16 

16 

16

16 

16 

16 

16 

15

Dec.

15 

15 

17 

16 

*18

16 

17 

19 

20 

25

44 

*t>15 

bll 

b8.2 

b8.6

b!4 

19 

25 

*31 

53

b23 

b!5 

t>9.7 

b8.2 

b!4

*b!4 

b!7 

b24 

b24 

t>28 

*27

Jan.

30 

33 

b32

t>8 

blO

b!5 

*b!5 

b!6 

*b!7 

*b!9

*b21 

t>23 

*t>26 

b25 

24

27 

*29 

28 

28 

30

35 

37 

38 

63

81

43 

21 

26 

27 

34 

34

Feb.

32 

22 

19 

23 

26

40 

90 

115 

54 

39

38 

38 

28 

25 

34

43 

40 

39 

40 

37

38 

33 

26 

28 

29

29 

29 

30

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter.year 1949-50 .......................

Peak discharge (base, 1.70O sec. -ft.). No

Mar.

36 

28

26 

27 

24

21 

20 

17 

20 

19

18 

17 

16 

16 

20

18 

16 

16

15 

,15

15 

15 

13 

14 

17

28 

24 

17 

16 

14 

14

Apr.

15 

14 

12 

10 

8.2

7.5 

6.4 

6.4 

5.9 

5.9

6.2 

6.4 

5.6 

5.1 

4.9

Seeondfoot-days

582.2 

489 

610.7

9,943.7

895 

1,064 

592 

184.5 

126.1 

112.9 

1,322.0 

348.5 

476.3

6,803.2

peak above

4.9 

4.6 

4.4

4.4

4.4 

4.4 

4.2 

3.8

4.0

4.4 

4.4 

4.2 

4.0 

4.0

May

4.2 

4.0 

3.7 

3.8 

4.0

4.2 

4.0 

4.0 

4.0 

4.4

4.7 

5.1 

4.9 

4.7 

4.6

4.4 

4.2 

3.8 

3.8

3.8 

3.8 

4.0 

3.7 

3.7

3.5 

3.5 

3.7 

3.7 

3.8 

4.0

Maximum

* 60 

22 

53

675

81

115 

36 

15 

5.1 

4.2 

404 

90 

161

404

base.

June

4.0 

3.8 

3.8 

3.7 

4.0

3.8 

3.5 

3.7 

4.2 

4.0

3.8 

3.8 

3.8 

3.8 

3.8

3.8 

3.7 

3.8 

3.8

4.0 

3.7 

3.3 

3.5 

3.3

3.7 

3.8 

3.7 

3.7 

3.8

July

4.0 

4.0 

4.0 

4.2 

a4.2

a5.1 

15 

70 

217 

194

50 

20 

12 

11 

9.7

23 

78 

404 

48

23 

19 

15 

14 

8.5

11 

16 

12 

8.1 

6.4 

4.4

Minimum

7.3

14 

8.2

2.0

8 

19 

13 

3.8 

3.5 

3.3 

4.0 

3.9 

4.4

3.3

Aug.

4.2 

4.2 

4.2 

3.9 

5.0

4.4 

4.2 

3.9 

3.9 

3.9

34 

90 

26 

13 

f7.4

4.7 

4.7 

4.2 

4.2

4.4 

6.7 

4.4 

4.4 

7.2

14 

35 

18 

8.9 

6.1 

4.7

Mean

18.8 

16.3 

19.7

27.2

28.9 

38.0 

19.1 

&.15 

4.07 

3.76 

42.6 

11.2 

15.9

18.6

\

Sept.

4.4 

4.4 

4.4 

4.4 

4.4

4.4 

161 

56 

64 

32

18 

15 

10 

6.7 

5.0

4.7 

4.4 

4.4 

4.4

4.4 

5.7 

5.4 

5.4 

7.1

7.1 

6.7 

6.7 

6.1 

5.0 

-

Runoff In 

acre-feet

1,150 

970 

1,210

19,730

1,780 

2,110 

1,170 

366 

250 

224 

2,620 

691 

945

13,490-

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of adjoining record and local information.

b Stage-discharge relation affected by ice.

f Computed from partly estimated gage-height record.
- LITTLE COLORADO RIVER BASIN 

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

340

Location. Water-stage recorder, lat. 34"20 I , long. 109°22', in NEuSE^ sec. 27, T. 11 N.,

 H. H8 E., 1 mile dovmstream from Coyote Creek, 4f miles upstream from Lyman Dam, and 

13 miles south of St. Johns.

Drainage area. 747 square miles.

Records available. April 1940 to September 1950.

Extremes. --Maximum discharge during year, 181 second-feet July 18 (gage height, 4.84

 reet ) ; no flow Sept. 10-16.

1940-50: Maximum discharge, 16,000 second-feet July 25, 1940 (gage height, 17.1 

feet, from f loodmarks ) , by slope-area method; no flow Sept, 10-16, 1950.

Remarks. Records fair except those for periods of ice effect, which are poor. Flow regulated by many small reservoirsi haVing a combined storage capacity of about 15,500 

acre-feet. Diversions above station for irrigation.

Supplemental data. Monthly discharge for the period October 1947 to March 1948, not 

previously puoiished, is given herewith. Discharge for this period was computed on 

basis of records for San Francisco River near Glenwood, Salt River near Chrysotile, 

and Show Low Creek near Show Low.

Month

Calendar year 1947...

Water year 1947-48... 

Calendar year 1948...

Second-foot -days

3,151.3

10,210.4 

9,864.0

Mean in second-feet

8.63

20

27.9 

27.0

Runoff in acre-feet

476

492

6,246

430

1,150

4,000

20,250 

19.564

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

34" 

5

6 

7 

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.

12 

12 

12 

12 

13

"12 

9.0 

9.4 

9.4 

8.2

7.5 

7.5 

7.5 

4.8 

4.3

4.1 

4.5

5.7 

7.2 

7.5

7.2 

7.2 

7.5 

8.6 

9.4

8.2 

6.6 

6.0 

7.5 

8.2 

8.2

Nov.

6.9 

5.7 

6.6 

6.9 

6.9

6.6 

6.3 

6.3 

6.3 

6.0

5.4 

4.5 

4.5 

4.8 

5.4

4.8 

5.4 

6.6 

5.7 

6.0

6.9 

6.0 

5.1 

4.1 

6.0

3.9 

3.7 

3.5 

3.5 

3.3

Dec.

3.7 

3.5 

3.7 

3.7 

4.8

6.9 

7.5 

8.2 

7.9 

7.9

b8 

b8 

b8 

*b7 

b7

b7 

b8 

blO 

blO 

bll

b!2 

b!2 

b!2 

b!2 

b!2

b!2 

b!2 

b!2

b!3 

b!4 

15

Jan.

14 

16 

15 

b!4 

b!4

b!4 

b!4 

bl5 

b!5 

b!5

b!5 

b!5 

b!5 

b!5 

b!5

b!5 

b!6 

*b!6 

16 

15

15 

15 

16

15 

15

b!5 

bis 

b!5 

16 

15 

b!5

Feb.

b!5 

b!5 

15 

14 

13

15 

15 

15 

14 

14

14 

15 

15 

13 

*12

14 

14 

13 

13 

13

14 

13 

13 

11 12

11 

11 

10

Honth

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

h. ......................................

ter year 1949-50 .......................

Mar.

1011

12 

12 

10

9.0 

9.0 

9.0

10 

11.

10 

8.2 

8.6 

9.0 

10

9.4 

9.4 

8.2 

5.4 

3.9

3.9 

4.5 

7.5 

18 

18

17 

14 

13 

13 

19 

28

Apr.

33 

29 

27 

32 

30

22

21 

21 

23 

26

21 

21 

18 

16 

13

10 

11 

7.9 

6.0 

4.3

3.1 

2.7 

2.4 

2.1

1.7

1.4 

1.0 

.9

1.2 

1.7

Secondfoot-days

254.2 

163.6 

279.8

13,738.2

466 

376 

341.0 

410.4 

26.0 

4.6 

65.0 

28.8 

6.5

2,421.9

May

1.2 

1.1 

1.2 

1.5 

1.7

1.4 

1.2 

1.2 

1.2 

1.2

1.1 

1.0 

1.0 

1.0 

1.0

.8 

.8 

.8 

.8 

.8

.8 

.5 

.3 

.3

.3

.3 

.3 

.3 

.3 

.3 

.3

Maximum

13 

6.9 

15

472

16 

15 

28 

33 

1.7 

.3 

24 

3.3 

1.7

33

June

0.3 

.3 

.3 

.2 

.2

.2 

.2 

.2 

.2 

.3

.2 

.2

.1 

.1 

.1

.1

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1

.1

.1 

.1 

.1 

.1 

.1

July

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

8.6 

1.6

.6 

1.0 

1.8 

.7 

.4

.3 

.3 

24 

8.8 

2.7

1.5 

1.1 

1.0 

1.2 

1.0

1.1 

1.0 

1.0 

1.1 

1.0 

2.4

Minimum

4.1 

3.3 

3.5

3.3

14 

10 

3.9 

.9 

.3 

.1 

.1 

.1 

0

0

Aug.

3.3 

1.8 

1.1 

.9 

.9

.8 

.8

.7 

.7 

.7

1.0 

1.0 

2.0 

2.0 

.5

.5 

.5

.6 

.8 

1.0

.7 

.4 

2.6 

1.9 

.8

.2 

.2

.1 

.1 

.1 

.1

Mean

8.20 

5.45 

9.03

37.6

15.0 

13.4 

11.0 

13.7 

.84 

.15 

2.10 

.93 

.22

6.64

Sept.

0.1 

.1 

.1

.1

.1

.1 

.4 

.1 

.1 

0

0 

0 

0 

0 

0

0

.1 .1 

1.1

.2

.1 

.2 

.3 

.4 

.4

.3 

.2 

.1 

.1 

1.7

Runoff in 

acre-feet

504 

324 

555

27,250

924 

746 

676 

814 

52 

9.1 

129 

57 

13

4,800

Peak discharge (base, 400 sec.-ft.). No peak above base. 

* winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
LITTLE COLORADO RIVER BASIN 341

Lyman Reservoir near St, Johns, Ariz.

Location.--Water-stage recorder, lat. 34°22', long. 109°23', in SVf^NE^ sec. 9, T. 11 N.,

 R. 28 E., in control tower of Lyman Dam on Little Colorado River, 9 1/3 miles south

of St. Johns.

Drainage area. 790 square miles. 

Kecords available. May 1940 to September 1950. 

Extremes.--Maximum contents during year, 19,400 acre-feet Apr. 10-12; maximum gage height,

 47.87 feet Apr. 11; minimum contents, 4,500 acre-feet Sept. 30 (gage height, 30.20

feet).

1940-50: Maximum contents, 25,500 acre-feet May 25-31, 1941 (gage height, 52.80

feet); minimum, -285 acre-feet Sept. 22, 1944 (gage height, 18.99 feet); no storage

available to Lyman Canal Sept. 11 to Oct. 7, 1944. 

Remarks. Reservoir is formed by an earth- and rock-fill dam, rubble faced; dam completed

 anaTstorage began in 1920; original dam washed out Apr. 14, 1915. Crest of permanent 

spillway raised from 50.0 to 56.8 feet during March and April 1949. Capacity, 31,000 

acre-feet between gage heights 20.0 feet (bottom of Lyman Canal) and 56.8 feet (average 

elevation of spillway crest). No spill occurred this year. Contents between 2.0 feet, 

sill of outlet gates, and 20.0 feet, 4,500 acre-feet (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 feet (bottom of Lyman Canal). 

Water used for irrigation in vicinity of St. Johns.

Contents at 12 p.m., in acre-feet, water year October 1949 to September 195o

Day

1

2

3

4

5

6

7

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.

17,700

17,600

17,500

17,400

17,300

17,300

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17.2OO

17,2OO

17,200

17,200

17,2OO

17,200

17,200

17,200

17,2OO

17,2OO

17,200

Nov.

17,200

17,20O

17,200

17,200

17,200

17,200

17,20O

17,200

17 , 200

17,200

17,200

17,200

17,200

17,2OO

17,200

17,200

17,200

17,200

17,200

17,200

17,200

17,20O

17,200

17,200

17,200

17,30O

17,300

17,300

17,300

17,300

-

Dec.

17,300

17,300-

17,300

17,300

17,300

17,300

17,300

17,3OO

17,300

17,300

17,300

17,300

17,300

17,300

17,300

17,400

17,400

17,400

17,500

17,600

17,600

17,600

17,6OO

17,600

17,700

17/700

17,700

17,700

17,800

17,800

17,600

Jan.

17,900

17.90O

17,900

18,000

ie,ooo

18,000

18,OOO

18,000

18,100

18,100

18,100

18,100

18,200

18,200

18,200

18,300

18,300

18,300

18,3OO

18,400

18,400

18,400

18,500

18,500

18,500

18,500

18,500

18,500

18,500

18,60O

18,600

Feb.

18,600

18,600

18,600

18,600

18,700

18,700

18,800

18,800

18,80O

18,800

18,800

18,900

18,900

18,900

16,900

18,900

18,900

19,OOO

19,000

19,OOO

19,000

19 , OOO

19,100

19,000

19,000

19,000

19,000

19,OOO

_

_

-

Mar.

18,900

18,900

18,9OO

18,900

18,900

18,800

18,900

18,900

18,900

18,900

18,900

18,900

18,900

18,9OO

18,800

18,800

18,900

18, 8OO

18,800

18,800

18,800

18,800

18,800

18,800

18,800

18,900

18,900

18,900

18,90O

18,900

19,000

Apr.

19,000

19,100

19,100

19,100

19,200

19 , 300

19,300

19,300

19,300

19,400

19,400

19,400

19 , 30O

19,300

19,2OO

19,1OO

19,100

19, OOO

18,9OO

18,9OO

18,900

18,900

18,800

18,800

18,800

18,800

18,700

18,700

18,600

18,600

-

May

18,600

18,500

18,500

18,500

18,500

18,400

18,400

18,300

18,200

18,100

1.8,000

17,900

17,800

17,700

17,600

17,400

17,300

17,200

17,100

16,900

16,80O

16,700

16,600

16,500

16,300

16,200

16,100

15,900

15,800

15,700

15,600

June

15,500

15, 300

15,200

15, 1OO

14,900

14,800

14, 700

14, 600

14,500

14, 400

14,300

14,200

14,100

14,000

13,900

13,800

13,700

13,600

13,400

13,300

13,200

13,200

13,10O

13,000

13,000

12,900

12,800

12,700

12,600

12,500

-

July

12,400

12,300

12,200

12,1OO

12,000

11,800

11,800

11,700

11,700

11,600

11,60O

11,60O

11,5OO

11,400

11,4,00

11,300

11,2OO

11,300

11,200

11,100

11,000

1O,9OO

10,800

10,700

10, 600

10,500

10,400

10,200

10,200

10,100

9,990

Aug.

9,940

9,890

9,830

9,790

9,750

9,700

9,59O

9,500

9,370

9,260

9,190

9,110

9,040

8,990

8,930

8,840

8,750

8,640

8,540

6,430

8,350

8,240

8,120

8,03O

7,940

7,620

7,710

7,600

7,480

7,360

7,240

Sept.

7,100

6,960

6,670

6,730

6,600

6,510

6,400

6,310

6,210

6,120

6,020

5,920

5,620

5,710

5,60O

5,510

5,410

5,320

5,260

5,21O

5,110

5,040

4,97O

4,890

4,810

4,730

4,640

4,560

4,520

4,50O

-

Note. No gage-height record Nov. 11-21, Nov. 23 to Dec. 14, Mar. 12-14; contents computed on 

basis of records of discharge for Little Colorado River above and below Lyman Reservoir.

.Monthly gage height and contents, water year October 1949 to September 1950

Dec.

Ca

Apr.

Sept

Wa

Date

31. ...................

lendar year 1949 .......

31....................

30....................

.30....................

ter year 1949-50. ......

Gage height 

(feet)t

46.45

-

30; 20

-

Contents 

(acre-feet)

17,800

-

4,500

-

Change In contents 

during month 

(acre-feet)

+500

+9,960

-2,740

-13,300

t Gage height at 12 p.m.
342 LITTLE COLORADO RIVER BASIN

Little Colorado River below Lyman Reservoir, near St. Johns, Ariz.

Location.--Water-stage recorder and concrete control, lat. 34°22', long. 109°23', in 

sw^ms^ sec. 9, T. 11 N., R. 28 E., 65 feet downstream from outlet tunnel in Lyman Dam 

and 9 1/3 miles south of St. Johns, used to determine water released to river channel. 

Water-stage recorder on Lyman Reservoir, 300 feet upstream in control tower on Lyman 

Dam, used to' determine water spilled three-eighths of a mile north at spillway in SW-ijsec. 4, T. 11 N., R. 28 E.

Drainage area.--790 square miles.

Records available.--April 1941 to September 1950.

Extremes. Maximum daily discharge during year, 7.0 second-feet Aug. 10; minimum daily, 

U.I second-foot (leakage) Dec. 16-31.

1941-50: Maximum discharge observed, 603 second-feet May 8, 1941 (including 546 

second-feet of spilled water); no flow at times except for negligible leakage amounting to less than 0.05 second-foot.

Remarks.--Records fair. Record shows all water spilled and released from Lyman Reservoir 

to the river channel, but does not include flow diverted to Lyman Canal (see p.

No flow over Lyman Dam spillway this year. Since 1929 spill has occurred only , 

during periods Apr. 8 to about May 6, 1932, and Apr. 30 to May 13, 1941. Plow completely regulated by many reservoirs (combined capacity, 51,000 acre-feet), the largest 

of which is Lyman Reservoir (capacity, 35,500 acre-feet, see preceding page).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.8 

1.8 

.8 

.8 

.8

.7 

.7 

.2 

.8 

.6

.4 

.5 

.5 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4 

.3

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3 

.4

Nov.

P. 4 

.4 

.3 

.3 

.4

.4 

.4 

.4 

.3

.3

.3 

.3 

.3 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 -.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

Dec.

0.2 

.2 

.2 

.2

.2

.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

Jan.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

.2

.2 

.2 

.2 

.2

.2

Feb.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

.2 

.2 

.2 .2 

.2

.2 

.2 

.2 

.2

.2

.2 

.2 

.3 

.5 

.4

.4 

.4 

.4

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Mare 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949 ....... .. .... .

ter year 1949-50 .......................

Mar.

0.4 

.4 

.4 

.4 

.4

.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

Apr.

Secondfoot-days

22.7 

7.9 

4.6

1,402.0

6.2 

6.8 

7.2 

56.9 

115.3 

149.8 

147.8 

162.5 

144.4

832.1

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

.4

.8 

.8 

1.9

3.7 

3.9 

3.9 

3.9 

3.7

3.2 

3.0 

3.2 

3.0 

3.0

3.0 

3.2 

3.2 

3.2 

3.2

May

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 

3.9 

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

Maximum

1.8 

.4 

.2

21

.2

.5 

.4 

3.9 

3.9 

6.0 

5.4 

7.0 

5.1

7.O

June

3.9 

3.9 

3.9 

3.9 

3.9

3.9 

3.9 

3.7 

4.8 

5.1

5.1

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.7

6.0 

6.0 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4

5.4

Minimum

July

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4

5.4 

5.4 

5.4

5.4 

4.8 

3.9 

3.9 

3.9

3.9 

4.2 

4.2 

4.2 

4.2

4.2 

4.2 

4.2 

4.2 

3.7 

3.7

0.3 

.2 

.1

.1

.2

.2 

.2 

.2 

3.4 

3.7 

3.7 

3.4 

3.7

.1

Aug.

3.9 

3.9 

3.9 

3.9 

3.9

3.9 

3.4 

3.4 

5.9

7.0

6.7

6.4 

6.0 

6.0

5.4

5.7 

5.7 

5.7 

5.7

5.7 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4 

5.4

Mean

0.73 

.26 

.15

3.84

.20 

.24 

.23 

1.90 

3.72 

4.99 

4.77 

5.24 

4.81

2.28

Sept.

5.1 

4.8 

4.8 

5.1

5.1

5.1 

5.1 

5.1 

5.4 

4.8

4.8 

4.8 

4.8 

4.8 

4.8

4.8 

4.8 

4.8 

5.1 

5.1

5.1 

5.1 

5.1 

4.8 

4.5

4.2 

4.2 

4.2 

4.5 

3.7

Runoff In 

acre-feet

45 

16 

9.1

2,780

12 

13 

14 

113 

229 

297 

293 

322 

286

1,650

Note. Mo gage-height record Dec. 16 to Jan. 17; discharge computed on basis of recorded range In 

stage.
LITTLE COLORADO RIVER BASIN 343

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

Location.--Water-stage recorder, lat. 34°38', long. 109°40' , in SW^NE^ sec. 2, T. 14 N., 

H. 25 E., 500 feet upstream from Zuni River and 3 miles northwest of Hunt.

Drainage area.--3,680 square miles (including 830 square miles in closed basin surrounding 

Quemado, N. Mex.).

Records available.--March 1940 to September 1950. 

Average discharge. 10 years, 6.72 second-feet.

Extremes.--Maximum discharge during year, 140 second-feet July V (gage height, 2.41 feet); 

no now for many days.

1940-50: Maximum discharge, 1,100 second-feet Aug. 13, 1945 (gage height, 4.13 

feet); no flow at times in most years.

Remarks. Records fair. Diversions for irrigation above station. Considerable regulation 

by many reservoirs (combined capacity, 54,000 acre-feet), the largest of which is 

Lyman Reservoir (see p. 341).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

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

Oct.

0.8 

.8 

.8 

.9

1.1

1.1 

.9 

.9 

.9 

1.1

1.1

1.1 

1.1 

1.1 

1.1

1.1

1.2 

1.1

1.2 

1.4

1.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2 

.4

Nov.

1.6

1.6 

1.6 

1.4

.1 

0 

0 

0

0 

0 

0 

O 

0

4.8

2.7 

2.4

2.7 

3.0

3.0 

3.0 

3.0 

3.0 

3.4

3.4 

3.7 

4.1 

4.1 

4.&

Dec.

4.5

4.1

4.1 

4.1

3.7 

3.7 

3.7 

4.1

4.1

a3.O 

33.0 

a2.7

3.7 

3.4 

3.0 

3.0 

3.4

3.4

b3.5 

b3.5 

b3.5 

3.4

.3.0 

3.0 

3.0 

2.7 

3.0 

3.4

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

Jan.

3.7

b4.5 

4.1 

5.3

4.5 

4.9 

4.9 

4.1

4.5

5.3 

7.5 

5.2

5.0 

6.3 

*8.1 

5.7 

5.7

5.7 

5.7 

5.7 

5.7 

4.5

4.1 

b4.9 

b5.3 

5.3 

4.5 

3.4

Feb.

3.4

4.9 

4.5 

4.5

3.7 

3.7 

3.0 

3.0

3.7 

3.7 

3.7 

3.7

2.7 

2.7 

3.0 

3.0 

3.0

2.7 

2.4 

2.4 

2.4 

2.4

2.4

2.1

1.8

her.. ...................................

lendar year 1949

ter year 1949-5O .......................

Mar.

1.8 

2.1 

2.7 

2.7 

2.7

2.4

1.4 

1.8 

1.8

1.4

1.2

1.1 

2.1

1.4

1.4 

1.8 

1.8 

1.-8

1.8 

1.8 

1.8 

1.6 

1.6

1.8 

1.8 

1.8 

1.6 

1.6 

.1.8

Apr.

1.8 

1.8 

1.6 

1.4 

1.4

1.1 

1.1 

1.1 

1.2

1.2 

1.1 

1.1 

1.2

1.4 

1.2

1.1 

.9

1.1

1.1 

.9 

.9 

.9 

.9

.9

1.2 

.8 

.7 

.8

Secondfoot -days

34.2

59.1 

108.6

3,128.6

158.1 

90.5 

56.2 

34.4 

16.9 

2.8 

22.6 

0 

1.2

584.6

May

0.8 

.7 

.7 

.7 

.9

.9 

.6 

.6 

.7

.7

.8 

.8 

.7 

1.4

.8 

.7 

.6 

.6 

.6

.4 

.2 

.1 

.1 

.1

.1 

.1

.2 

0 

0

.1

Maximum

1.4 

4.8 

4.5

460

8.1 

4.9

2.7 

1.8 

1.4 

.4 

9.5 

0 

.5

9.5

June

0.2 

.2 

.2 

.2 

.1

.2

.2

.1 

.1 

.1

.1 

.1 

0 

0 

0

o

0 

0

.1

0 

0

.1 

.1

0 

0

0 

.4

0 

.3 

O

July

0

O

.1

0

.1

0 

9.5 

2.8 

O 

0

0 

.2 

.1

0 

0

.6 

.2 

3.2 

3.7 

0

0 

0 

0 

1.1 

3.5

.2 

.1 

.2

0

0 

0

Minimum

0.8 

0

2.7

0

3.4 

1.8 

1.1 

.7 

0 

0 

0

o

0

0

Aug.

Maan

1.10 

1.97 

3.50

8.57

5.10' 

3.23 

1.81 

1.15 

.55 

.09 

.73 

0 

.04

1.60

Sept.

'ooo ooooo i ' 

Runoff in 

acre-feet

68 

117 

215

6,210

314 

180 

111 

68 

34 

5.6 

45 

0 

2.4

1,160.0

Peak discharge (base, 70 sec.-ft.).--July 7 (5 p.m.) 140 sec.-ft.

* Winter discharge measurement made on this (lay.

a No gage-height^,record; discharge computed on basis of recorded range in stage.

b Stage-discharge relation affected by ice.

207364 O - 52 - 23
344 LITTLE COLORADO RIVER BASIN

Little Colorado River near Hunt, Ariz.

Location. Water-stage recorder, lat. 34°39', long. 109.°42', in NE^NW^ sec. 4, T. 14 N.. 

 HT~25 E., at bridge on U. S. Highway 260, 2 miles downstream from Zuni River and

5 miles northwest of Hunt. Datum of gage is 5,371.59 feet above mean sea level, datum

of 1929. 

Drainage area.--6,280 square miles (including 830 square miles in closed basin surrounding tjuemado, N. Mex., and excluding 964 square miles in north Plains Basin, N. Mex.,

a closed basin east of Continental Divide).

Records available. May 1929 to October 1933, March 1940 to September 1950. 

Average discharge. 14 years, 23.7 second-feet. 

Extremes .--toaxiJnum discharge during year, 119 second-feet July 24 (gage height, 6.42 feet);

no now for many days.

1929-33, 1940-50: Maximum discharge, 8,000 second-feet July 28, 1929 (gage height,

16.8 feet, present datum); no flow at times in several years. 

Remarks.--Records fair except those for periods of ice effect or fragmentary or no gageheight record, which are poor. Diversions above station for irrigation. Considerable

regulation by many reservoirs (combined capacity, about 63,000 acre-feet). Zuni River

contributes practically all inflow between this station and station above Zuni River,

near Hunt. 

Revisions. Revised discharge, in second-feet, for high-water periods in the water years

1931-32 are given herewith. They supersede figures published in Water-Supply Papers

719, 734.

Day

1 

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 

29 

30 

31

Octo 

Move 

Dece

Ca

Janu 

Febi" 

Marc 

Apr!

June 

July 

Augu 

Sept

Va

1930-31 1930-31 

Aug. 7.. 437 Aug. 21.. 47 

8.. 155 22.. 281 

9.. 445 23.. 190 

10.. 261 24.. 88 

11.. 362

Month

Augu 

Sept 

Wa 

Octp 

Wa

st 1931. ....................

ember. . . 

ter year 

ber 1931 

ter year

i930-31.. ..........

1931-32... .........

Discharge, in second-feet

Oct.

0.8 

.8 

.8 

.8 

.9

.9 

.9 

.8 

.8 

.9

1.0 

1.0 

1.0 

1.0 

1.0

1.0 

1.3 

1.4 

1.5 

4.9

2.4 

1.8 

1.6 

1.5 

1.4

1.3 

1.2 

1.2 

1.2 

1.1 

1.2

Nov.

1.2 

1.3 

1.3 

1.3 

1.3

.7 

.3 

.3 

.2 

.2

.2

.2 

.2 

.2 

.2

3.2 

2.1 

2.0

2.1 

2.4

2.5 

*2.7 

3.0 

3.3 

3.7

3.8 

3.9 

4.1 

4.2 

4.2

Dec.

4.2 

3.9 

4.1 

4.1 

4.2

4.2 

3.9 

3.8 

3.9 

4.2

3.7 

3.0 

3.0 

3.0 

*3.5

3.5 3.5- 

3.0 

3.0 

3.5

3.5 

3.5 

3.5 

3.5 

3.5

3.5 

3.0 

3.0 

3.0 

3.0 

3.5

Jah.

3.5 

4.0 

4.5 

4.5 

5.0

5.2 

4.7 

4.7 

4.7 

4.2

4.4 

5.9 

6.5 

6.7 

4.2

5.4 

6 

*7 

5.4 

5.4

5.4 

5.4 

5.6 

5.7

4.1

3.9 

4.4 

5.6 

4.9 

4.4 

3.9

1930-31 1930-31 1930-31 

Sept. 8.. 253 Sept. 19.. 350 Sept. 28.. 

15.. 235 20.. 422 29.. 

16.. 458 21.. 321 1931-32 

17.. 245 22.. 303 Oct. 2... 

18.. 243 23.. 230 3... 

4.. .

Maximum

693 

458 ~6~93 ~

840

Minimum

24

13

0

Mean

193 

145 ' "SB re"

74. 8 

66.2

116 

247

836 

597 

240

Runoff in 

acre-feet

11,860 

8,650

48,072

, water year October 1949 to September 1950

Feb.

4 

4 

4 

4 

3

3 

3 

3 

3 

3

3 

3 

3 

3 

*3

3 

3 

3 

3 

3

2 

2 

2

2

2 

2

1

Month

lendar year 1949

h.. ..................................

ember. ...............................

ter year 1949-50 ....................

.1 

.4 

.4 

.1

.9

.8 

.7 

.6 

.0 

.2

.8 

.8 

.7 

.6 

.6

.7 

.6 

.6 

.3 

.2

.9 

.7 

.6 

.4 

.2

.1 

.1 

.8

Mar.

1.8 

2.4 

2.6 

2.5 

2.8

2.9 

a2.5 

al.7 

al.8 

al.8

al.5 

al.3 

al.2 

a2.0 

al.5

1.5 

1.7 

1.7 

1.7

1.7 

1.8 

1.7 

1.7 

1.7

1.9 

1.8 

1.7 

1.4 

1.6 

1.7

Apr.

1.7 

1.6 

1.5 

1.3 

1.4

1.4 

1.3 

1.3 

1.4 

1.3

1.4 

1.2 

1.2 

1.5 

1.0

1.1 

1.2 

1.1 

1.1

1.1 

1.1 

1.0 

1.0 

1.0

1.0 

1.3 

1.0 

.8 

.9

Secondfoot-days 

39.4 

56.3 

109.7

8,068.9

155.2 

92.9 

56.9 

36.6 

18.0 

4.1 

72.2 

.9 

2.2

644.4

May

0.9 

.8

.8 

.9 

.9

.9 

.9 

.7 

.7 

.7

.8 

.9 

.7 

1.2 

1.3

.7 

.6 

.5 

.6

.3 

.2 

.2 

.1 

.1

.1 

.1 

.2 

.2 

.1 

.2

Maximum

4.9 

4.2 

4.2

1,800

7 

4.4 

2.9 

1.7 

1.3 

.5 

18 

.1 

.4

18

June

0.2 

.2 

.2 

.3 

.2

.2 

.3 

a. 2 

a. 2 

a. 2

a.l 

a.l 

a.l 

a.l 

a.l

a.l 

a.l 

.1 

.1

.1 

.1 

.2 

.1 

0

0

.1 

.1 

.1 

.1

July

0 

0 

0

.1 

.1

.1 

9.3 

6.9 

.7 1-.2

5.4 

4.9 

2.6 

a. 8 

a. 5

f.6 

1.6 

1.4 

.1

0 

0 

0 

12 

18

al.2 

a. 6 

f2.2 

a. 7 

a. 3 

.1

Minimum

0.8 

.2 

3.0

.2

3.5 

1.8 

1.2 

.8 

.1 

0 

0 

0 

0

0

Aug.

0.1 

0 

0 

0 

0

.1 

.1 

0 

0

.1

.1 

.1

.1

0 

0

.1 

.1

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

1.27 

1.88 

3.54

22.1

5.01 

3.32 

1.84 

1.22 

.58 

.14 

2.33 

.03 

.07

1.77

Sept.

0 

0 

0 

0 

0

.1 

.1 

0 

0 

0

0 

0 

0 

0 

0

0 

0

.1 

.1 

.1

.1

.2 

.1 

.1 

.4

.3 

.1 

.1

Runoff in 

acre-feet

7f 

lli 

218

16,010

308 

184 

113 

73 

36

143^ 

1.8 

4.4

1,280

Peak discharge (base, 600 see.-ft.). No peak above base. 

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of recorded range in stage and records for 

station above Zuni River, near Hunt.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights. 

Note. Stage-discharge relation affected by ice Dec. 12 to Jan. 5, Jan. 17, 18.
LITTLE COLORADO RIVER BASIN 345

Little Colorado River at Woodruff, Ariz.

Location. --Water-stage recorder, lat. 34°47', long. 110°03.' , in NE^SW-f sec. 17, T. 16 N.,

 Ft. 22 E., on county bridge in Woodruff and 3f miles downstream from Silver Creek. Datum 

of gage is 5,129.0 feet above mean sea level (from river profile survey, based on datum 

of 1929).

Drainage area. 8,100 square miles.

Records available. October 1949 to September 1950. March 1905 to December 1908, December

 191b to December 1919 (fragmentary), April 1929 to December 1933, and September 1935 

to September 1949 at site lj miles downstream. Prior to October 1948, published as 

Little Colorado River neap Woodruff.

Average discharge. 19 years (1929-33, 1935-50), 58.7 second-feet.

Extremes . Maximum discharge during year, 2,050 second-feet July 19 (gage height, 9.85 

1'eet) ; no flow for several days in April and May.

1929-50: Maximum discharge, 13,000 second-feet July 26, 1940; no flow for some 

days in spring or summer of most years.

Maximum discharge recorded, 25,000 second-feet Dec. 5, 1919 (gage height, 12.0 

feet, datum then in use), from rating curve extended above 2,000 second-feet; maximum 

gage height recorded, 12.7 feet, datum then in use, Jan. 19, 1916 (discharge not 

determined) .

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

 Height record, and those above 500 second-feet, which are fair. Diversions above 

station for irrigation. Some regulation by reservoirs above station. Records of 

chemical analyses, water temperatures, and sediment loads for the water year 1950 are 

given in Water-Supply Paper 1189.

Revisions (water years ) . W 1049: 1917.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

8 

9 

1O

11 

12

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

4.4 

4.8 

7.8 

8.6 

7.O

7.8 

4.8 

3.1 

2.6 

5.8

5.3 

5.3 

5.8 

5.8 

5.8

5.8 

8.6 

7.O 

5.3 

21

16 

12 

16 

21 

15

13 

12 

11 

11 

11 

10

Nov.

9.4 

9.4 

5.8 

4.4 

4.4

3.1 

3.4 

5.3 

3.7 

3.4

4.0 

3.4 

4.4 

5.3 

5.3

7.0 

7.0 

7.0 

7.O 

6.4

*7.0 

6.4 

6.4 

6.4 

7.0

7.8 

7.8 

9.4 

10 

11

Dec.

12 

12 

13 

12 

11

11 

10 

11 

9.4 

12

b!2 

b8 

b5 

b4 

b4

*b5 

7 

10 

b!3 

b!4

b!3 

b!3 

b!2 

b!2 

bll

b!2 

b!2 

b!2 

b!2 

b!2 

13

Jan.

14 

18 

1O 

b9 

b8

b6 

b6 

b9 

b!2 

b!6

b!4 

b!2 

b!2 

b!3 

b!3

b!3 

*b!3 

14 

16 

16

14 

13 

13 

12 

11

8.6 

6 

6 

12 

15 

12

Feb.

10 

9.4 

9.4 

12 

10

10 

9.4 

7.8 

7.0 

7.O

8.6 

8.6 

8.6 

*7.8 

6.4

5.8 

5.8 

6.4 

6.4 

6.4

6.4 

7.0 

7.0 

7.0 

7.O

6.4 

7.0 

7.0

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

6.4 

5.8 

5.8 

5.8 

5.8

5.8 

4.8 

4.4 

4.8 

4.8

4.4 

4.4 

5.8 

5.8 

7.0

6.4 

9.4 

7.8 

10 

10

7.O 

4.8 

4.4 

4.4 

3.7

5.3 

7.8 

2.6

2.1 

2.1 

2.4

Apr.

2.4

2.1 

2.1 

1.6 

.9

.4 

.4 

.3 

.4 

1.9

1.7 

1.7 

1.7 

1.7 

.7

.6 

.2 

1.2 

.1 

.2

.1 

.1 

0 

0 

.2

.2 

.3 

.1 

.1 

.5

Secondfoot-days

28O.4 

188.3 

329.4

27,141.9

366.6 

217.6 

171.8 

23.9 

18.6 

17.5 

1,981.0 

110.6 

279.1

3,984.8

May

1.6 

1.3 

.2 

1.7 

1.6

.6

2.1 

1.4 

1.3 

1.3

.4 

.2

.2 

.6 

1.7

.4 

.2 

1 .1 

0 

0

0 

0

.1

.2 

.2

.1 

O 

0 

0

.1

1.0

Maximum

21 

11 

14

4,680

18 

12 

10 

2.4 

2.1 

.9 

766 

3O 

72

766

June

0.8 

.8 

.6 

.5 

.4

.9 

.6 

.4 

.2 

c.3

0.4

0.5 

.6 

.6 

.6

.6 

.5 

.4 

.4

.4

.5 

.5 

.6 

.6 

.8

.8 

.8 

.8 

.8 

.8

July

0.6 

a. 6 

a. 7 

a. 7 

a. 7

28

17 

384 

55 

22

34 

16 

11 

1O 

6.4

a3.7 

12 

59 

766 

67

a!2 

f!5 

f27 

a!2 

151

160 

30 

33 

22 

16

»«£-

Minimum

2.6 

3.1

4

.6

6 

5.8 

2.1 

O 

O 

.2 

.6 

.5 

.2

O

Aug.

3.1 

2.4 

1.9 

1.3 

5.3

9.3 

3.1 

2.1 

1.6 

1.3

5.6 

20 

3O 

5.3 

3.4

1.6 

1.4 

l.O 

.8 

.8

.6 

.5 

.5 

.6 

1.6

1.6 

.9 

.8 

.S 

.8 

.6

Mean

9.05 

6.26 

10.6

74.4

11.3 

7.77 

5.54 

.80 

.60 

.58 

63.9 

3.57 

9.3O

1O.9

Sept.

O.4 

.3 

.2 

.5 

.6

.8 

23

10 

2.6

1.6

.9 

2.9 

4.4 

4.0 

4.0

4.4 

4.8 

72 

18 

21

8.6 

53 

23 

7.8 

3.4

2.1 

1.7 

1.3 

.9 

.9

Runoff In 

acre -feet

556

373 

653

i 55,8»

727 

432

341 

47 

37 

35 

3,930 

219 

554

7,9OO

Peak discharge (base, 1.9OO see.-ft.).--July 19 (4:30 a.m.) 2,050 sec.-ft.

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and recorded range in stage.

b Stage-discharge relation affected by ice

c Backwater from temporary cofferdam! discharge interpolated.

f Computed from partly estimated gage heights.
346 LITTLE COLORADO RIVER BASIN 

Little Colorado River at Holbrook, Ariz.

j sec. 6, T. 

miles downstream from

Location.--Water-stage recorder, lat. 34°53'50", long. 110°09'40",

 17 N., R. 21 E., at bridge on U. S. Highway 260 at Holbrook and

Puerco River.

Drainage area. 11,300 square miles. 

Records available.--March 1905 to December 1909 (May 1907 to December 1909, gage heights

only), September 1949 to September 1950. 

Extremes.--1949: Maximum discharge during period in September, 3,200 second-feet Sept. 13

 (gage height, 7.4 feet); minimum, 5.3 second-feet Sept. 27.

1949-50: Maximum discharge during year, 2,960 second-feet July 19 (gage height, 7.68 

feet); minimum, 0.2 second-foot July 2.

1905-9, 1949-50: Maximum daily discharge, 20,200 second-feet Nov. 27, 1905; minimum 

discharge, that of July 2, 1950.

Peak of flood of Sept. 19, 5.923, was 60,000 second-feet computed from cross section 

and water-surface slope 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 doubtful or no gage-height

 record, which are poor. Diversions above station for irrigation. Some regulation by 

reservoirs above station.

Discharge, In second-feet, 1949-50 

1949

Day

Sept. 14

16

17

18

19

Discharge

g699 

g425

g318

78

34

18

Day

Sept. 20 

21

22

23

24

25

Discharge

12 

11

10

9.2

8.5

12

Day

Sept. 26

28

29

30

Discharge

9.2 

6.5

11

12

14

Peak discharge (base, 5,000 see.-ft.).--Sept. 13 (12 p.m.) 3,220 

sec.-ft.

g Computed from graph based on gage readings.

Day

1

2

3

4

5

6

7

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.

10

5.9

5.9

9.2

9.2

8.5

7.1

5.9

4.8

5.3

7.1

7.1

6.5

7.8

7.1

7.1

8.5

9.2

9.2

9.2

22

11

13

15

19

13

13

12

11

12

11

Nov.

11

11

10

8.5

7.1

6.5

6.5

6.5

7.1

5.3

7.1

5.9

7.8

7.1

8.5

7.8

8.5

8.5

9.2

9.2

10

*10

10

9.2

9.2

8.5

8.5

9.2

10

11

-

Dec.

13

14

14

15

14

14

15

14

14

15

14

12

9

6

5

*5

7

10

13

15

16

16

14

14

14

14

14

14

14

14

14

Jan.

16

18

19

14

11

10

9

9

11

15

16

16

15

15

15

15

*16

22

24

24

19

18

16

16

16

14

12

9.2

14

18

16

Feb.

15

15

19

16

16

13

13

70

47

52

103

656

g55

*g22

18

15

9.2

9.2

7.8

8.5

10

11

9.2

8.5

8.5

9.2

9.2

10

_

_

-

Mar.

10

10

9.2

8.5

7.8

5.3

9.2

7.8

5.9

5.9

4.8

6.5

7.1

7.1

9.2

9.2

8.5

9.2

9.2

12

11

7.8

7.1

5.9

5.3

7.1

5.9

7.8

4.3

3.6

3.3

Apr.

3.6

3.3

2.2

3.3

2.7

1.7

1.6

1.7

.9

1.9

2.4

3.9

3.9

2.4

3.6

3.3

2.7

2.2

1.9

2.2

1.9

2.4

1.7

1.4

1.4

1.7

1.6

1.6

2.2

1.9

-

May

1.7

2.2

3.0

1.9

3.6

4.3

2.2

3.3

3.6

3.9

3.3

2.7

1.9

1.9

1.9

2.4

1.9

1.4

1.2

1.2

1.2

1.2

1.1

1.0

1.1

1.0

1.0

1.0

1.2

1.1

1.1

June

1.0

1.1

1.4

1.2

1.2

1.1

1.1

1.4

1.4

1.0

.8

.7

.8

.7

.7

.6

.6

.7

.7

.8

.7

.9

2.3

4.8

1.4

.9

.8

.8

.8

.7

July

0.7

.6

.9

.6

.9

3.2

28

483

602

193

g!25

g93

g22

gll

g9.2

g34

g30

g26

840

78

d!8

d!4

d!5

37

120

243

66

37

42

16

14

Aug.

7.8

4.8

3.0

2.2

17

10

8.5

10

3.0

2.2

156

88

83

14

8.5

4.8

3.6

3.0

2.4

1.7

1.6

1.4

1.4

1.4

1.6

1.9

3.3

2.4

1.6

1.4

1.4

Sept. 

1.4

1.2

1.2

1.2

4.3

12

103

41

8.5

3.0

a2.5

a3.0

3.6

5.9

5.3

5.3

5.9

204

66

30

22

52

88

15

9.2

6.5

3.9

3.0

1.9

1.9

Peak discharge (base, sec. -ft.). No peak above Base.

Winter discharge measurement made on this day. 

a No gage-height record; discharge computed on basis of records for station at Woodruff, 

d Doubtful gage-height record; discharge computed on basis of records for station at Woodruff, 

g Computed from graph based on gage readings. 

Note. Stage-discharge relation affected by Ice Dec. 11 to Jan. 16, Jan. 26, 27.

Monthly discharge, In second-feet, 1949-50

Month

September 14-30, 1949 ......................

December. ...................................

September. ..................................

WatSr year 1949-50 .......................

Secondfoot-days

1,687.4

302.6 

254.7 

396

478.2 

1,255.3 

231.5 

69.2 

61.5 

33.1 

3,203.1 

457.9 

711.7

7,454.8

Maximum

699

22

11 

16

24 

656 

12 

3.9 

4.3 

4.8 

840 

156 

204

840

Minimum

6.5

4.8 

5.3 

5

9 

7.8 

3.3 

.9 

1.0 

.6 

.6 

1.4 

1.2

.6

Mean

99.3

9.76 

8.49 

12.8

15.4 

44.8 

7.47 

2.31 

1.98 

1.10 

103 

14.8 

23.7

20.4

Runoff In 

acre-feet

3,350

600 

505 

785

948 

2,490 

459 

137 

122 

66 

6,350 

908 

1,410

14,780
LITTLE COLORADO RIVER BASIN 347

Little Colorado River near Cameron, Ariz.

Location. --Water-stage recorder, lat. 35°56', long. 111 0 34', unsurveyed, on Navajo Indian 

Reservation, 3 miles downstream from Coconino dam site, 9| miles downstream from 

Moenkopi Wash, 9| miles northwest of Cameron. and 45.5 miles upstream from mouth.

Drainage area. 26,500 square miles.

Records available.--June 1947 to September 1950.

Extremes.--Maximum discharge during year, 4,340 second-feet July 18 (gage height, 8.93 

feet); no flow for many days.

1947-50: Maximum discharge, 21,900 second-feet Aug. 9, 1947 (gage height, 19.60 

feet); no flow during some periods in each year.

Remarks.--Records good except those below 50 second-feet and those for periods of doubtI'ul or fragmentary or no gage-height record, which are poor. Diversions above statior 

for irrigation, municipal, and railroad uses. Some regulation by reservoirs above 

station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4

5

6 

7 

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.

0.2 

0 

O 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

19 

2,210 

818

alSO 

a30 

a!5 

alO 

a6

a4 

a3 

a2 

a2 

al 

al

Nov.

0.5 

.4 

15 

16 

14

12 

10

9.1 

7.6 

6.3

5.3 

6.9 

5.6 

3.2

1.2

.7 

.5 

.4 

' .4 

.3

.4 

.7 

2.5 

1.4

1.0

.9 

1.2 

.8 

1.4 

1.4

Dec.

1.0

.7 

.8 

.8 

.7

.6 

.6 

.8 

1.3 

1.6

.7 

.2 

0 

0 

0

0 

0 

0 

.5 

3.0

.9 

.8 

.1 

0 

0

0 

0 

0 

0 ~ 0 

0

Jan.

O 

3.7 

1.4 

.2 

.5

.1

0 

0 

0 

0

0 

0 

0 

0 

0

c

0 

.5 

4.5 

8.6

9.9 

9.1 

9.9 

9.5 

7.2

a6 

a5 

a4 

a4 

a5 

5.6

Feb.

3.0 

1.6 

1.6 

2.8 

20

22 

22 

19 

14 

12

11

595 

529 

f748 

f445

f305 

227 

186 

157 

143

148 

192 

251 

294 

381

350 

341 

280

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194S .. . . . . .

ter year 1949-50 .......................

Mar.

270 

931 

1,020 

760 

625

546 

426 

390 

358 

345

291 

209 

183 

168 

132

116 

103 

89 

73 

62

50 

42 

32 

24 

19

16 

14 

12 

10 

10 

.12

Apr.

d21 

d26 

15 

192 

350

317 

227 

200 

148 

114

96 

75 

60 

42 

25

18 

14 

8.2

2.8 

.2

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot-days

3,271.2 

127.1 

15.1

143,863.8

94.7 

5,701.0 

7,338 

1,951.2 

0 

O 

3,877 

503.3 

845.2

23,723.8

May

Maximum

2,210 

16 

3.0

7,640

9.9 

748 

1,020 

350 

0 

0 

1,210 

107 

332

2,210

June

Minimum

July

0 

0 

0 

0 

0

0 

63 

263 

53 

49

95 '81 

a75 

60 

45

30 

20 

770 

1,210 

119

45 

59 

91 

39 

22

228 

111 

82 

154 

75 

38

0 

.3 

0

0

0 

1.6 

10 

0 

0 

0 

0 

0 

0

0

Aug.

14 

6.6 

2.0 

1.0 

.2

106 

49 

7.6 

5.3 

2.0

.3 

14 

16 

9.1

16

40 

19 

11 

3.8 

.5

.1 

.1

44 

107 

8.8

.7 

13

5.6 

f.5 

f.l 

0

Mean

106 

4.24 

.49

394

3.05~ 

204 

237 

65.0 

0 

0 

125 

16.2 

28.2

65,0

Sept.

O 

0 

0 

0 

0

0 

0 

21 

80

19

6.9 

12 

12 

8.2 

5.3

3.8 

2.4 

1.6 

26 

332

180 

a80 

a30 

a!5 

a6

a3 

al 

0 

0 

0

Runoff In 

acre-feet

6,490 

252 

30

285,400

188 

11,310 

14,550 

3,870 

0 

0 

7,690 

998 

1,680

47,060

Peak discharge (base, 4,000 sec, -f t. ). July 18 (9 p.m.) 4,340 sec. -ft.

stations.

f Computed from partly estimated gage heights. ' 

Note. Doubtful gage-height record Jan. 21-25, Feb. 5-13, Mar. 19 to Apr. 2 (discharge computed

from doubtful gage heights), July 14-17 (discharge computed on basis of records for nearby stations
348 LITTLE COLORADO HIVER BASIN

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

Location.--Water-stage recorder, lat. 34°22' , long. 109°23', In SW^NEj- sec. 9, T. 11 N., 

R. U8 E., 45 feet downstream from outlet tunnel In Lyraan Dam and 9 1/3 miles south of 

St. Johns.

Records available. June to September 1950.

Extremes.--Maximum daily discharge during period, 45 second-feet Aug. 31; minimum daily, 

3.5 second-feet Sept. 30.

Remarks.--Records good. Canal diverts water from Lyman Reservoir for irrigation in the 

vicinity of St. Johns. Mo diversion between intake and station.

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct. Nov. Dec.

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Mare 

Aprl 

May.

June 

July 

Augu 

Sept

Th

Jan. Feb.

lendar year

e period. ...............................

Mar. Apr.

Secondfoot-days

675 

998 

948.9 

928.2

-

May

f 

tso

Maximum

35 

40 

45 

44

-

June

30 

29

29 

29 

29 

29 

30

35 

35 

35 

35 

35

35 

35 

28 

24 

24

24 

25 

34 

33 

33

July

33 

33

34 

40 

40

40 

39 

37 

33 

26

19 

15 

15 

16 

19

20 

24 

24 

27 

40

40 

40 

40 

40 

40

40 

40 

40 

40

36 

28

Minimum

24 

15 

8.9 

3.5

-

Aug.

23 

19 

17

11 

8.9

13

se

38 

38 

41

38 

30 

26 

23 

20

22 

32 

32 

32 

32

32 

33 

37 

37 

37

36 

36 

39 

40 

43 

45

Mean

30.7 

32.2 

30.6 

30.9

-

Sept.

44 

44 

44 

44 

44

38 

34 

34 

34 

33

33 

33 

33 

33 

33

33 

33 

32 

29

26

26 

-26 

26 

26 

26

25 

25 

25 

8.7 

3.5

Runoff In 

acre-feet

1,340 

1,980 

1,880 

1,840

7,040

t Result of discharge measurement.
LITTLE COLORADO RIVER BASIN 349

Silver Creek near Shumway, Ariz.

Location.--Water-stage recorder, lat. 34°22'30", long. 110°00'30", in SW^-SE^- sec. 4, T. 11 

H., K. 22 E., 1,000 feet downstream from overflow channel from Mexican Lake, 1 mile 

downstream from dam forming Daggs Reservoir, 4| miles southwest of Shumway, and 85 miles 

north of Showlow. Datum of gage is 5,913.48 feet above mean sea level datum,of 1929.

Drainage area. 172 square miles, of which 53 square miles are considered aa noncontribut - ing. 

Records available.--March 1942 to September 1950. Monthly records only prior to October 1944. 

Extremes.--Maximum daily discharge during year, 32 second-feet July 5, 7; minimum daily, 

U.6 second-foot July 29 to Aug. 1.

1942-50: Maximum daily discharge, 142 second-feet Mar. 8, 1949; minimum daily, 0.2 

second-foot on many days in 1945, 1946.

Remarks, Records good October to May and fair thereafter except those for periods of no 

gage-height record, which are poor. Flow regulated by Daggs Reservoir and Mexican Lake 

(combined capacity, 4,920 acre-feet below elevation 5,966.9 feet, crest of spillway 

from Daggs Reservoir, and below elevation 5,965.5 feet, crest of spillway from Mexican 

Lake). Mo overflow from Daggs Reservoir and Mexican Lake this year. Mo diversions for 

irrigation above Daggs Reservoir.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

13 

13 

13

13 

13

15 

13 

10 

6.4 

6.4

6.4 

6.4 

6.4 

6.4 

6.6

6.3 

5.2 

5.2 

5.6 

5.6

5.4 

5.4 

5.6 

5.4 

5.4

5.4 

5.4 

5.3 

5.3 

5.3 

3.4

Nov.

1.1 

1.1 

1.2 

1.2 

1.2

1.2 

1.2 

1.1 

1.1 

1.1

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 

1.2

Dec.

1.2 

1.2 

.3 

.3 

.3

.3 

.3 

1.3 

1.3 

bl.3

bl.3 

bl.3 

bl.3 

*bl.3 

bl.3

bl.3 

bl.3 

1.3 

1.3 

1.4

bl.4 

bl.3 

bl.3 

bl.3 

bl.3

bl.3 

bl.3 

bl.-3 

bl'.3 

bl.3 

bl.3

Jan.

bl.3 

bl.3 

1.3 

bl.3 

bl.3

bl.3 

bl.3 

bl.3 

1.3 

1.4

1.4

1.4 

1.4 

1.5 

1.5

1.5 

1.4 

1.4 

*1.4 

1.4

1.4 

1.3 

1.4 

1.5 

1.4

1.4 

1.4 

1.5 

1.5 

1.5 

1.5

Feb.

1.5 

1.4 

1.4 

al.5 

al.5

al.5 

al.5 

al.5 

al.5 

al.6

al.6 

al.6 

al.6 

al.6 

1.7

1.6 

1.6 

1.6 

1.6 

1.6

1.6

1.6 

al.5 

1.4 

al.5

1.5 

al.5 

1.6

Month

Ooto 

Nove 

Dece

ca

Janu 

Pebr 

Marc 

Apr! 

May.

June

July

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-50 .......................

Mar.

1.6 i.e

1.6 

1.6 

1.6

1.6 

1.6 

1.8 

1.8 

1.6

1.6 

1.9 

2.0 

1.9 

1.8

1.9 

1.8 

1.8 

1.8 

1.8

1.8 

1.8

1.6 

1.6 

1.6

1.8 

5.1 

9.6 

9.6 

9.6 

9.6

Apr.

9.6 

9.6 

9.2 

9.2 

9.2

9.2 

9.2 

9.2 

9.2 

9.6

9.6 

9.6 

9.6 

9.6 

11

13 

13 

13 

14 

15

15 

15 

15 

15 

16

17 

20 

20 

20 

22

Secondfoot-days

231.2 

33.7 

40.3

5,803.2

43.2 

43.2 

88.6 

385.6 

814 

860 

586.8 

387.5 

324.6

3,838.7

nay

24 

24 

24 

Z4 

25

25 

25 

25 

26 

26

27 

27 

27 

27 

27

27 

27 

27 

27 

27

27 

26 

27 

27

2?

27 

2T 

27 

27 

27 

27

Maximum

13 

1.2 

1.4

142

1.5 

1.-7 

9.6 

22 

27 

31 

32 

21 

13

32

June

27 

27 

27 

27 

27

27 

27 

27 

28 

28

28 

28 

27 

28 

29

30 

30 

30 

30 

31

31 

30 

30 

30 

30

30 

30 

30 

29 

27

July

27 

26 

29 

30 

32

31 

32 

13 

4.6 

4.3

17 

24 

23 

22 

22

21 

21 

21 

20 

20

20 

20 

20 

20 

20

21 

17 

7.1 

.6 

.6 

.6

Minimum

3.4

1.1 

1.2

.8

1.3

1.4

1.6 

9.2 

24 

27 

.6 

,6 

5

.6

Aug.

0.6 

8.1 19 - 

21 

20

20 

20 

20 

21 

20

17 

17 

16 

14 

13

12 

11 

9.9 

f6.4 

f8.4

12 

11 

9.5 

f8. 6 

fll

fll 

flO 

as 

a5 

a5 

a5

Mean

7.46 

1.12 

1.30

15.9

1.39 

1.54 

2.86 

12.9 

26.3 

28.7 

18.9 

12.5 

10.8

10.5

Sept.

as 

a5 

 -6.9

11 

11

12 

12 

11 

11 

9.9

11 

11 

11 

11 

11

10 

11 

12 

13 

12

12 

f!3 

f!2 

12 

f!2

f!2 

12 

9.8 

10 

12

Runoff in 

acre-fe«t

459 

67 

80

11,520

86 

86 

176 

765 

1,610 

1,710 

.1,160 

769 

644

7,610

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for adjoining periods.

b Stage-discharge relation affected by ice.

f Computed from fragmentary gage-height record.
350 LITTLE COLORADO RIVER BASIN

Silver Creek near Woodruff, Arlz.

Location.--Water-stage recorder, lat. 34°44 I , long. 110°02', In NW^-NE^ sec. 5, T. 15 N., R.

 22 K., half 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 feet downstream. Altitude of gage, about 5,196 feet (from river-profile map).

Drainage area.--942 square miles.

Records available.--April 1929 to October 1"933, October 1935 to September 1950 (fragmentary 

since July 1947).

Average discharge.--15 years (1929-33, 1935-46), 25.6 second-feet.

Extremes.--Maximum discharge during period May to September 1950, 1,160 second-feet July

 7 (gage height, 4.93 feet); no flow for many days. Maximum discharge for period is 

also maximum for water year.

1929-50: Maximum discharge, 11,000 second-feet July 26, 1940 (gage height, 12.37 

feet), by slope-area method; no flow during periods in spring and summer of most years.

Remarks.--Records fair above 5 second-feet and poor below. Diversions above station for 

irrigation. Flow regulated by several reservoirs. Records show discharge over dam and 

do not include flow in canal that diverts at dam. Canal flow was measured as follows: 

June 21, 5.47 second-feet,Sept. 28, 5.30 second-feet.

Revisions (water years),--W 1089: .1929(M).

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

Z 

3 

4 

5

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec.

*.

Jan. Feb.

Month

Goto 

Move 

Deoe

Ca

Janu 

Febr 

Marc 

Apr! 

May 

June 

July 

Augu 

Sept

Th

lender year 

ary

s oerlod . ........... ....................

Mar. Apr.

Secondfoot-days

0 

.1 

756.7 

44.6 

239.3

-

May

0 

0 

0 

0 

0

0 

0

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

0 

.1 

269 

15 

66

-

June

0 

0 

0 

0 

.1

0

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

32 

59 

269 

22 

8.4

4.5 

.5

1.2 

3.2 

0

0 

0 

Z5 

75 

44

7.0 

4.8 

8.4 

6.8 

40

85 

1.7 

29 

14 

11 

5.Z

Minimum

0 

0 

0 

0 

0

-

Aug.

1.7 

0 

0 

0 

7.5

6.0 

2.4

1.0 

.2 

0

0 

15 

9.5

1.0 

0

0 

0 

0 

0 

0

0 

0 

0

.1

.2

0 

0 

0 

0 

0 

0

Mean

0 

.003 

24.4 

1.44 

7.98

-

Sept.

0 

0 

0 

0 

0

0 

28 

6.8 

2.4

.2

0 

3.2 

4.Z 

3.5 

3.2

3.9 

10 

66 

9.9 

13

7.6 

50 

14 

6.8 

3.8

1.7 

1.0 

.1 

0 

0

Runoff in 

acre-feet

0 

.2 

1,500 

88 

475

2,060

Peak discharge (base, 1,000 see.-ft.).--July 7 (12 p.m.) 1,160 sec.-ft.
LITTLE COLORADO RIVER BASIN 351

Show Low Creek at Show Low, Ariz.

Location.--Water-stage recorder, lat. 34°15ilO", long. 110°01i40", In NEij sec. 20, T. 10 

 N., H. 22 E., at bridge on U. S. Highway 60 at Show Low. Datum of gage Is 6,309.22 

feet above mean sea level, datum of 1929.

Drainage area. 87 square miles.

Records available. January 1941 to September 1950. Monthly records only prior to October

1944.

Extremes. Maximum discharge during year, 238 second-feet Mar. 3 (gage height, 3.34 feet); 

no now for many days.

1941-50: 'Maximum discharge, 3,200 second-feet Mar. 14, 1941 (gage height, 9.30 

feet), from rating curve extended above 600 second-feet on basis of velocity-area 

studies and logarithmic plotting; no flow at times in most years.

Remarks. Records fair. Many small diversions above station for irrigation. Some regulation by storage reservoirs upstream.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2

3 

4 

5

6 

7 

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.

0.6 

.6 

.5 

.4 

.2

.2 

.1 

.1 

.1 

.1

.3 

.3 

.3 

.4 

.4

.5 

.8 

1.3 

3.8 

5.8

5.0 

3.4 

5.4 

3.4 

1.9

1.5 

1.2 

1.2 

1.0 

1.0 

1.0

Nov.

1.0 

1.0 

1.0 

1.2 

1.2

1.0 

1.2 

1.0 

1.0 

1.0

1.3 

1.5 

1.5 

1.3 

1.3

1.3 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

*1.3 

1.3 

1.3

1.3 

1.0 

.8 

1.0 

1.0

Dec.

1.0 

1.0 

1.2 

1.2 

1.2

1.2 

1.2 

1.3 

1.3 

2.4

2.2 

bl.9 

bl.9 

 1.9 

1.7

1.7 

1.5 

1.7 

1.7 

1.9

1.9 

bl.7 

bl.7 

1.7 

1.7

bl.5 

bl.5 

bl.3 

bl.5 

1.9 

2.Z

Jan.

3.0

47 

28 

b6 

b2.4

bl.3 

bl.5 

1.7 

2.2 

2.4

2.6 

7.2 

2.4 

1.9 

1.7

1.9 

2.2 

3.4 

*3.0 

2.6

2.4 

2.6 

2.6 

2.4 

2.4

1.9 

1.5 

1.3 

1.3 

1.5 

1.5

Feb.

1.3 

1.5 

1.9 

2.4 

2.4

2.4 

2.6 

3.4 

3.4 

3.0

3.4 

4.2 

3.4 

3.4 

3.0

3.4 

5.0 

6.2 

5.4 

5.4

5.4 

5.4 

5.4 

4.2 

H.4

2.2

3.4 

10

Month

Oeto 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

st... ...................................

ter year 1949-50 .......................

Peak discharge (base, 150 sec. -ft.) . Mar.

Mar.

12 

37 

132 

65 

33

20

12 

8.4 

6.2 

5.0

4.6 

4.6 

3.0 

2.2

1.9

1.3

1.3 

1.0 

.7 

.7

' 1.3 

1.0 

.5 

.5 

.6

.7 

.7 

1.0 

.8 

.8 

.7

Apr.

0.8 

1.0 

1.3 

1.0 

.8

1.0 

.6 

.1 

.1 

.1

O 

0 

0 

0

.1 

.1

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

.2 

.3

Secondfoot-days

42.8 

35.6 

49.7

6,374.5

145.8 

105.5 

360. S 

7.5 

4.0 

6.3 

24.5 

19.4 

5.1

806.7

3 (1:30 a.m

May

0.2 

0 

0 

0 

O

.1 

0 

.2 

.2 

0

0

0 

0

.1 

.1

.2 

.2 

.2 

.1 

.2

.5 

.2 

.2 

.2 

.2

.1 

.1 

.1

.1 

.1 

.4

Maximum

5.8 

1.5 

2.4

595

47 

10 

132 

1.3 

.5 

.8 

5.0 

3.4 

.4

132

June

0.3

.5 

.3 

.4 

.2

.2 

.2 

.5 

.2

.1

.1 

.1 

.2 

.2 

.2

.1 

.2 

.2 

.2 

.2

*.2

.2 

.1 

.1 

0

0 

0

.1

.2 

.8

July

0.2 

.3

.1 

.1 

.1

?.4 

.4 

.4 

.2 

.3

.2 

.2 

5.0

1.2 

.4

.5 

1.7 

2.4 

1.3 

.5

.4 

.4 

.2 

.2 

.4

.4

1.4 

2.4 

.6

.1 

.1

Minimum

0.1 

.8 

1.0

0

1.3 

1.3 

.5 

0 

0 

0

.1

.1

0

0

Aug.

0.1

.1 

.1 

.1

.1

.1 

.1 

.5 

.7 

.7

1.5 

3.4 

2.6 

1.5 

1.2

.7 

.4 

.4 

.5 

.4

.4 

.4 

.6 

.2 

.1

.1 

.2 

.5 

.6 

.3 

.8

Mean

1.38 

1.19 

1.60

17.5

4.70 

3.77 

11.6 

,25 

.13 

.21 

.79 

.63 

.17

2.21

Sept.

0.2 

.2 

.3

.1 

.1

.1 

.2

.1 

.1 

.1

.1 

.1 

.2 

.2 

.2

.2 

.2 

.2 

.3 

.2

.4 

.4 

.2 

.2 

.1

.1 

.1 

.1 

.1 

0

Runoff In 

acre-feet

85 

71 

99

12,640

289 

209 

715 

15 

7.9 

12 

49 

38 

10

1,600

.) 238 sec. -ft.

Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
LITTLE COLORADO RIVER BASIN

Chevelon Fork below Wildcat Canyon, near Winslow, Ariz.

Location. Water-stage recorder, lat. 34°38', long, 110°43«, in SW£ sec. 36, T. 15 N., R. 

 Ib K., three-eighths of a mile downstream from Wildcat Canyon and 25 miles south of

Winslow. Datum of gage is 5,905,16 feet above mean sea level, datum of 1929 (Bureau

of Reclamation bench mark).

Drainage area.--275 square miles.

Records available. May 1947 to September 1950.

Extremes.--Maximum discharge during year, 726 second-feet Feb. 28 (gage height, 5.08 

reet); no flow for extended periods,

1947-50: Maximum discharge, 1,290 second-feet (revised) Apr. 14, 1949 (gage height, 

6.23 feet), no flow for extended periods.

Revisions.--The maximum discharge for the water year 1949 has Deen revised to 1,290 

second-feet Apr. 14, 1949 (gage height, 6.23 feet), superseding figure' published in 

Water-Supply Paper 1149.

Remarks.--Records good. The station is Just downstream from Wildcat Reservoir site. No 

diversion a-bove station.

Revisions.--The discharge for supplemental peak for Mar. 20, 1949, has been revised to 

i,2iu second-feet, superseding figures published in Water-Supply Paper 1149.

Discharge, in second-feet, water year Ofctober 1949 to September 195O

Day

1 

2

3 

4 

5

6 

7 

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.

0 

0 

O 

0 

O

0 

0 

0

o

0

0 

0 

0 

0 

0

o 

o

0

o 

o

o 

o

0

o

0

0 

5.7 

8.3 

6.9 

5.8 

4.5

Nov.

3.7 

3.2 

3.0 

2.6 

2.2

1.9 

1.6 

1.0 

.8 

.7

.5 

.5 

.6 

1.3 

1.2

.7 

.5 

.4 

.2 

.1

O 

0 

0 

O 

0

0

o

0 

0

o

Dec.

O 

0 

0 

0 

O

O

o

0

o

0

o 

o

0 

.5 

.5

.3 

.2 

.2 

.4 

.8

1.1 

.7 

.5 

.4 

.4

.3 

.2

.1 

O 

0

o

Jan.

0.1 

.7 

5.3 

36 

37

3C 

24 

23 

20

12

11 

8.9 

8.7 

6.7 

5.9

5.2 

5.3 

6.4 

6.2 

% 5.8

5.6 

12 

45 

82 

95

61 

42 

35 

36 

28 

20

Feb.

15 

14 

14 

14

14

24 

53 

385 

331 

216

155 

109 

85 

75 

75

90 

118 

149 

170 

174

213 

204 

166 

145 

157

194 

304 

568

Month

Oeto 

Nove 

Deee

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Ha

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 400 sec. -ft.). Feb.

a No gage-height record; discharge compute 

station neap Winslow.

Mar.

344 

275 

296 

231 

201

194 

170 

128 

104 

90

78 

68 

57 

47 

43

37 

34 

32 

32 

31

31 

29 

28 

26 

27

30 

27 

24 

37 

168 

216

Apr.

155 

104 

74 

53 

41

31 

25 

20 

a!5 

a!3

all 

a9 

8.3 

6.4 

5.2

4.4 

4.1 

3.6 

3.2 

8.8

2.5 

2.1 

1.8 

1.4 

1.0

.9 

.8 

.6 

.3 

.2

Secondfaot-days

31.2 

26.7 

6.6

26,680.8

719.8 

4,231 

3,135 

600.6 

O 

O 

0 

0 

0

8,750.9

8 (3 p.m.) 

1 on basis o

May

Maximum

8.3 

3.7 

1.1

993

95 

568 

344 

155 

O 

O 

0 

O 

0

568

June July

Minimum

O 

O

o

0

.1

14 

24 

.2 

O 

0 

0 

0

o

o

Aug. Sept.

M Runoff In "ean acre-feet

1.01 62 

.89 53 

.21 13

73.1 52,920

23.2 1,430 

151 8,390 

101 6,22O 

20.0 1,190 

O O

o o

0 0

o o 

o o

24.0 17,360

524 sec. -ft.; Feb. 28 (6 a.m.) 726 see. -ft. 

f recorded range in stage and records for
LITTLE COLORADO RIVER BASIN 353

Chevelon Pork near, Winslow, Arlz.

Location.--Water-stage recorder, lat. 34°56', long. 1100 31', in SE&SW-j- sec. 27, T. 18 N., 

'It: 1't E., 3 miles upstream from mouth and 12 miles southeast of Winslow. Altitude of 

gage, about 4,905 feet (from river-profile map).

Drainage area.- 1,010 square miles, including some area which is probably noncontributing.

Records available.--December 1905 to December 1908 (January 1907 to December 1908, gage 

heights and some discharge measurements only), December 1915 to December 1919, March 

1929 to February 1934, September 1935 to September 1950.

Average discharge.--22 years (1916-19, 1929-33, 1935-50), 51.3 second-feet.

Extremes.--Maximum discharge during year, 616 second-feet Mar. 1 (gage height, 5.59 feet); 

minimum daily, 3.0 second-feet May 4, Sept. 30.

1916-19, 1929-50: Maximum discharge, 16,100 second-feet Apr. 4, 1929 (gage height, 

17.8 feet), from rating curve extended above 4,000 second-feet; minimum, about 1 secondfoot at times in each of several years.

Remarks.--Records good prior to Apr. 20 and poor thereafter. No diversion above station. 

Ciievelon Canal diverts 2 miles downstream from station. Canal flow was measured as 

follows: June 21, 3.50 second-feet; July 20, 1.42 second-feet; Aug. 1, 2.09 secondfeet; Aug. 16, 2.50 second-feet; Sept. 13, 2.64 second-feet.

Revisions (water years).--W 1049: 1916, 1918(M).

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2

3

4 

5

6 

7 

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.

4.6 

4.9 

5.2 

5.2 

4.6

4.3 

e4.0 

e3.8 

4.0 

4.6

4.9 

5.2 

5.2 

5.2 

5.2

5.2 

4.9 

4.0 

4.0 

4.3

4.9 

4.9 

4.9 

4.9 

4.9

4.9 

4.9 

4.9 

4.9 

4.9 

5.2

Nov.

5.2 

5.2 

5.2 

5.2 

5.2

5.2 

5.2 

4.6 

4.6 

e4.9

5.8 

5.5 

5.5 

5.5 

5.5

5.5 

5.5 

5.5 

5.5. 

5.2

5.2 

4.9 

4.9 

4.9 

5.2

5.2 

5.2 

5.2 

5.2 

5.2

Dec.

5.5 

5.5 

5.5 

5.5 

5.2

4.9 

4.6 

4.3 

4.3 

4.9

4.9 

4.6 

4.6 

4.0 

4.O

4.0 

4.0 

4.0 

3.8 

4.3

4.6 

4.6 

4.3 

4.3 

4.3

4.3 

4.3 

4.3 

4.3 

4.3 

4.3

Jan.

4.3 

e4.3 

e4.6 

4.6 

4.6

4.6 

4.3 

4.3 

e4.3 

4.3

4.3 

4.3 

4.6 

4.6 

4.6

4.6 

4.6 

4.6 

4.6 

4.6

4.6 

4.6 

e4.6 

e4.4 

4.1

4.6 

22 

33 

31 

24 

22

Feb.

20

16 

15 

13 

11

10 

9.5 

9.8 

271 

3O5

211 

165 

114 

88 

74

66 

70 

96 

131 

150

158 

193 

199 

160 

134

138 

176 

323

Month

Octo 

Hove 

Deoe

Ca

Janu 

Febr 

Marc 

Aprl 

May

June 

July 

Augu 

Sept

Wa

lendar year 194£ .......................

ter year 1949-50 .......................

Peak discharge (base, 500 sec. -ft.). Mar.

Mar.

478 

335 

283 

298 

236

199 

192 

169 

132 

98

e76 

68 

58 

51 

43

37 

32 

27 

23 

21

20 

18 

17 

15 

13

14 

14 

14 

15 

14 

75

Apr.

197 

155 

elOl 

78 

e55

e41 

e32 

e23

e!6

14

12 

10 

9.0 

e7.3 

7.3

7.0 

6.3 

6.3 

5.9 

5.7

5.5 

5.9

6.1 

7.4 

7.4

7.O 

6.1 

e5.5 

4.9 

5. -8

Secondfoot-days

147.5 

156.6 

140.3

26,548.2

248.5 

3,326.3 

3,085 

856.4 

152.7 

122.0 

132.5 

145.2 

135.3

8,648.3

1 (1 a.m.)

May

e5.8 

e4.0 

e3.7 

e3.0 

4.3

e5.2 

e3.5 

3.3 

4.9

6.1

5.8 

5.5 

5.8 

5.8 

5.8

5.8 

e4.9 

4.3 

4.6 

5.2

5.8 

5.2 

e4.3 

4.3 

5,2

5.5 

5.5 

4.3 

4.9 

5.2 

5.2

Maximum

5.2 

5.8 

5.5

8OO

33 

323 

478 

197 

6.1 

5.2 

7.0 

15 

25

478

616 sec. -ft

June

e4.3 

3.2 

4.0 

5.2 

5.2

e4.3 

e3.2 

3.7 

4.O 

4.0

3.5 

3.5

3.7 

3.8 

3.7

3.7 

3.7 

4.0 

4.3 

4.3

4.0 

3.8 

4.0 

3.8 

4.3

4.6 

4.6 

4.6 

a4.5 

a4.5

July

a4.5 

a4.5 

a4.5 

a4.5 

a4.5

a4.5 

a4.5 

a4.5 

4.3 

3.8

3.8 

3.5 

3.7 

3.3 

3.2

e3.2 

3.8 

4.3 

4.3 

4.3

3.7 

3.5 

3.5 

3.8 

3.7

6.8 

7.0 

a6 

a5 

a4 

a4

Minimum

3.8 

4.6 

3.8

2.8

4.1 

9.5 

13 

4.9 

3.0 

3.2 

3.2 

4 

3.0

3.0

Aug.

4.3 

4.6 

4.3 

4.3 

 4.3

4.9 

5.5 

4.3 

4.0 

4.6

15 

8.2 

4.9 

4.0 

4.0

4.0 

a4 

a4 

a4

a4

a4 

a4 

a4 

a4 

a4

a4 " 

a4 

a4 

a4 

a4 

a4

Mean

4.76 

5.22 

4.53

72.7

8.02 

119 

99.5 

28.5 

4.93 

4.07 

4.27 

4.68 

4.51

23.7

Sept.

a4 

a4 

a4 

a4

a4

a4 

a25 

a4 

a4 

a4

a4 

a4 

3.8 

3.5 

3.3

3.3 

3.3 

3.5 

3.3 

3.5

4.0 

4.9 

4.3 

4.0 

4.0

3.8 

3.8 

3.7 

63.3 

63.0

Runoff in 

acre-feat

293 

311 

278

52,650

493 

6,600 

6,120 

1.70O 

303 

242 

263 

288 

268

17,160

a No gage-height records discharge computed on basis of recorded range in stage, weather records, 

and records for adjoining periods.

e Stage-discharge relation affected by wind; discharge computed from estimated non-wind-affected 

gage heights.
354 LITTLE COLORADO RIVER BASIN

Clear Creek below Willow Creek, near Winslow, Ariz.

Location.--Water-stage recorder, lat. 34°40', long. 111°00', in HW^NE^ sec. 30, T. 15 N., 

R. 13 E., 2 miles downstream from Willow Creek and 30 miles southwest of Winslow.

Drainage area.--321 square miles.

Records available.--June 1947 to September 1950.

Extremes.--Maximum discharge during year, 1,090 second-feet Feb. 28 {gage height, 8.17 

feet); no flow for extended periods.

1947-50: Maximum discharge, 1,990 second-feet Apr. 15, 1949 {gage height, 9.75 feet); 

no flow for extended periods.

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

No diversion above station. Station is downstream from Willow Reservoir site.

Rating table, water year 1949-5O (gage height, in feet,

and discharge, in second-feet) 

(Shifting-control method used Jan. 4 to Feb. 26)

2.7

2.8

2.9

3.0

3.1

.2 

.7

1.5 

2.8

3.-2

3.3

3.4

3.5 

3.7

4.6

7.0

9.9

13

23

4.0 42

4.3 69

4.6 102

5.0 158

5.5 246

6.0 

6.6 

7.2 

7.8 

8.5

356

517

712

943

1,260

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

Z 

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

Oct.

0 

0

o

0 

0

0

o

0 

0

o

0 

0

o

0 

0

0 

0 

0 

80 

234

122 

76 

63 

57 

55

63

60 

48 

38 

29 

23

Nov.

20 

15 

12 

9.6 

7.6

- 6.3 

5.1 

4.2 

3.2 

2.7

2.7 

2.5 

3.3

4.8 

4.1

3.0 

2.0 

1.4 

1.1 

.9

.6 

.4 

.2

.1 

O

0 

0 

0 

0 

0-

Dec. Jan.

0 

0

o

33 

a28

a23 

a2O 

a20 

a!7 

a!3

alO 

a9 

as a7' 

a6

5.8 

5.3 

5.6 

5.3 

5/3

5.6 

7.9 

19 

58 

77

58 

44 

42 

39 

32 

19

Feb.

21 

18 

20

17 

18

24 

44 

360 

407 

287

216 

146 

98 

81 

87

90 

102 

129 

161 

195

231 

246 

213 

186 

188

233 

474 

942

Month

Octo 

Nove

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 194£ . .

ter year 1949-50 .......................

Mar.

643 

532 

474 

394 

344

344 

298 

242 

191 

156

133 

121 

100 

87 

76

67 

63 

60 

63 

63

65 

70 

74 

82 

96

81 

70 

96 

94 

158 

276

Apr.

356 

320 

252 

202

158

128

107 

90 

87 

76

57 

46 

38 

32 

27

24

21 

18 

15 

13

11 

9.6 

7.9 

6.5 

5.3

4,4 

3.5 

2.7

1.6 

1.1

Secondfoot-days

948 

112.8 

0

53,438.7

622.8 

5,234

5,613 

2,120.6 

1.0 

0 

0 

0 

0

14,652.2

May

0.7 

.2 

.1 

0 

0

0 

0 

0 

0

o

0

0 

0

o

0 

0

o

0 

0 

0

0

o

0

o

0

o

0 

0

0

o

0

Maximum

234 

20

0

1,580

77 

942 

643 

356 

.7 

0 

0 

0 

0

942

June July

Minimum

0 

0 

0

o

0 

17 

60 

1.1 

0 

0 

0 

0 

0

0

Aug.

Mean

30.6 

3.76 

O

146

20.1 

187 

181 

70.7 

.03 

O 

O 

0 

O

40.1

Sept.

Runoff in 

acre-feet

1,880 

224 

0

106,000

1,240 

10,380 

11,130 

4,210 

2.0 

0 

0 

0

o

29,070

Peak discharge (base, 5OO sec.-ft.).--Feb. 8 (4:30 p.m.) 594 sec.-ft.; Feb. 28 (6 a.m.) 1,090 sec.

a No gage-height record; discharge computed on basis of records for Chevelon Fork below Wildcat 

Canyon, near Winslow.
LITTLE COLORADO RIVER BASIN 355

Clear Creek near Winslow, Ariz.

Location.--Water-stage recorder, lat. 34°58', long. 110°38', in SE£ sec. 9, T. 18 N., R.

ib K., lg miles upstream from mouth and 5 miles southeast of Winslow. Control for

station is crest of diversion dam 1,200 feet downstream. 

Drainage area.--607 square miles. 

Kecords available.--March 1929 to February 1934, September 1935 to September 1950. June

19U6 to March 1907 (gage heights and discharge measurements), April 1907 to January 1909

(gage heights only) at site 2f miles upstream.

Average discharge.--19 years (1929-33, 1935-50), 85.9 second-feet. 

Extremes.--Maximum discharge during year, 1,000 second-feet Mar. 1 (gage height, 6.30 feet);

no flow for many days.

1929-50: Maximum discharge, 50,000 second-feet Apr. 4, 1929 (gage height, 18.1 feet),

from rating curve extended above 13,500 second-feet on basis of velocity-area studies;

no flow for many days in eacti year. 

Remarks.--Records good except those below 10 second-feet, which are poor. 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. Average leakage

below dam this year was 2.8 second-feet based on one discharge measurement. 

Revisions (water years).--W 859: 1929.

Rating table, water year 1949-50 (gage height, In feet,

and discharge, in second-feet) 

(Shifting-control method used Sept. 6-3O)

4.65

4.75

4.8

4.85

4.9

4.95

O 

.1 

.2 

1.0 

4.9 

13

5.0

5.05

5.1

5.15

5.2

5.3

23

34

47

62

82

130

5.4 

5.6 

5.8 

6.0 

6.2

187

324

495

685

890

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6

7 

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.

0.

'.a

.8

.8 

.6 

.8 

1.0 

.8

.8 

.8 

.8 

.8 

.8

.8 

36 

47 

56 

50 

42

Nov.

34 

30 

23

19 

13

11 

7.9 

4.9 

3.8 

3.8

2.8 

2.0 

1.4 

1.0 

1.0

1.0 

1.0 

1.0 

1.0 

1.4

1.0 

1.0 

1.0 

1.0

1.0

1.0 

1.0 

1.0 

.8 

1.0

Dec.

.0 

.0 

.0 

.O 

.0

1.0 

.8 

.8 

.8 

1.4

.8 

.8 

.6 

.6 

.6

.6

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6

.6 

.4

Jan.

0.4 

.4 

.3 

.3 

.3

.4 

.4 

.4 

.3 

.4

.4

.4 

.4 

.4 

.4

.4 

.4 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

29 

32

Feb.

25 

23 

21 

15 

7.9

6.3 

9.5 

8.5 

6.3 

298

273 

238 

170 

125 

92

73 

77 

82 

96 

130

170 

193 

238 

219 

187

176 

193 

359

Month

00 to 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Ha

ber. ....................................

lendar year 1949 

ary

ter year 1949-50 .......................

Mar.

871 

618 

504 

459 

389

340 

324 

309 

258 

206

170 

141 

130 

116 

96

87 

73

66 

59 

56

56 

56 

59 

62 

62

73 

87 

77 

62 

87 

92

Apr.

200 

332 

332 

273 

225

181 

141 

111 

87 

77

77 

69 

56 

47 

34

25 

19 

13 

6.3 

2.8

1.4 

.4

.1 

0

o

0 

0

o

0 

0

Secondfoot-days

247.6 

173.8 

22.6

51,620.2

74.6 

3;512.5 

6,045 

2,310.0 

0 

0 

90.2 

O 

10.7

12,487.0

May

Maximum

56 

34 

1.4

1,630

32

359 

871 

332 

0 

0 

73 

0 

1.4

871

June July

0 

O 

0 

0 

0

o

73 

13 

1.4 

.8

l.tl 

.6 

.1 

.1 

O

0 

0

o 

o 

.1

.1 

o

0 

0 

0

0 

0 

0 

0 

0 

0

Minimum

0.4 

.8 

.4

0

.3 

6.3

56 

0 

0 

O 

0 

O 

O

0

Aug.

Mean

7.99 

5.79 

.73

141

2.41 

125 

195 

77.0 

O 

0 

2.91 

0 

.36

34.2

Sept.

0 

0

o 

o

0

0 

1.4 

1.4 

.8 

1.0

.8 

.8 

.2 

.2 

.2

.2 

;2 

.4 

.2

.1

.2 

.2 

.6 

.8 

.4

.2 

.1 

.1 

.1 

.1

Runoff in 

acre -feet

491 

345 

45

102,400

148 

6,970 

11,990 

4,580 

0 

0 

179 

O 

21

24,770

Peak discharge (base, 5OO sec.-ft.).--Mar. 1 (6 a.m.) 1,OOO sec.-ft.; July 7 (8 p.m.) 638 sec.-ft.
356 LITTLE COLORADO RIVER BASIN

Moenkopi Wash near Tuba, Ariz.

Location. Water-stage recorder, lat. 36°02', long. 111°24', in T. 31 N., R. 9 E., unsurveyed, on Navajo Indian Reservation, at bridge on U. S. Highway 89, 9 miles upstream from 

mouth, 11 miles north of Cameron, and 11 miles southwest of Tuba. Datum of gage is 

4,310.96 feet above mean sea level (Arizona Highway Department benchmark).

Drainage area. --2, 490 square miles.

Records available. --July 1926 to September 1950.

Average discharge. --24 years, 20.3 second-feet.

Extremes . --Maximum discharge during year, 2,890 second-feet July 25 (gage height, 6.0 

reet) ; no flow for many days.

1926-50: Maximum discharge, 15,100 second-feet Aug. 4, 1929, by slope-area method; 

no flow for many days in each year.

Remarks . --Records poor. Diversions above station for irrigation. 

Revisions (water years ).--W 899: 1935-39.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.4 

1.0 

1.0 

.8

.1

O

o

0 

0 

.7

1.8 

.2 

.7 

1.4 

2.9

3.2 

3.6 

284 

1,300 

164

21 

7.2 

5.6 

4.3 

3.4

3.0 

2.9 

2.9 

2.8 

2.5 

2.4

Nov.

2.4 

2.2

2.1 

2.1 

2.1

2.1 

2.1 

2.0 

2.0 

2.0

4.9 

4.0 

2.8 

2.4 

2.8

2.8 

2.6 

2.6 

2.6 

2.5

3.5 

3.6 

3.2 

3.2 

3.4

3.5 

3.6 

3.8 

3.4 

3.4

Dec.

*3.0 

3.0 

2.9 

2.9 

3.0

3.0 

3.2 

3.2 

3.4 

3.4

3.5 

3.3 

3.0 

3.0 

3.0

4.0 

5.0 

6.5 

6.5 

4.0

1.5 

1.5 

2.0 

2.0 

2.0

2.0 

2.O 

2.0 

2.0 

*2.0 

2.0

Jan.

2.0 

1.5

*1.5

1.5 

*1.5

1.5 

1.5 

1.5 

2.0 

2.0

2.0 

2.5 

2.5 

3.0 

3.0

*3.5 

4 

4 

5

6.0

6.0 

6.0 

4.9 

5.0 

7.2

7.5 

4.1 

4.9 

6.2 

5.8 

*4.5

Feb.

.7 

.3 

.9 

.0 

.9

.9 

.3 

.8 

.2 

.9

.9 

.9

.0 

a 

a

.5

!"tl 

.8 

1.8

2.8 

2.5 

2.8 

3.4 

3.0

2.1 

27 

7.8

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

Via

lendar year 1949 ^

ter year 1949-50 .......................

Peak discharge (base, 1,400 sec. -ft. ) .--Oc

sec. -ft.; Aug. 5 (8 p.m.) 1,50O sec. -ft.; Se 

* Winter discharge measurement made on thi 

a No gage-height record; discharge compute 

stations. 

Note. Stage-discharge relation affected b 

record Jan. 4, 7-15; discharge computed as e

Mar.

6.2 

4.7

2.8 

1.9 

1.2

.2 

0 

0 

0 

0

o

0

o

0 

0

o

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

o

0 

0 

0

Apr. May

Second- itoxlimM foot -days "*"«»

1,824.8 1,300 

85.7 4.9 

93.8 6.5

5,129.8 1,300

114.1 7.5 

123.5 27 

17.0 6.2 

0 « 0 

0 0 

0 0 

671.7 155 

222.6 125 

492.9 262

3,646.1 1,300

June

KInlBUli

July

O 

0 

0 

0 

0

0 

17 

22 

17 

55

30 

9.2 

2.5 

.5

0

0 

1.2 

136 

26 

25

7.0 

2.6 

.7 

0 

- 15$

ISO 

 10. 

ttS 

al 

al 

e

Aug.

0 

0 

0 

0 

125

39

8.5 

2.6 

al 

0

0

11 

al 

0 

0

0 

0 

0 

0 

0

0 

3.3 

29 .6' 

0

.4 

.4

\Z

Sept,

0.2 

.3 

0 

.2 

.4

.4

.9 

22 

7.6 

2.9

5.6 

10 

4.7 

2.8 

2.6

2.1 

2.2 

2.1 

90 

262

34 

815 

a8 

a5 

al

a2.5 

a2.0 

«2,0 

" 1^4 

1.0

Mean Runoff in

O 58.9 3,680 

2.Q 2.86 170 

1.5 5.03 186

0 14.1 10,190

1.5 3.68 226 

 1.8 4.41 245 

0 .55 34

00 0 

00 0 

00 0 

0 21.7 1,330 

0 7.18 442 

0 16.4 978

0 9.99 7,230

t. 19 (2 p.m.) 2,480 sec. -ft.; July 25 (8 p.m.) 2,890 

pt, 2O (1 a.m.) 1,5OO sec. -ft. 

s day. 

d on basis of weather records and records for nearby

y ice Dec. 11-16, Dec. 20 to Jan. 19 (no gage-height 

xplained in footnote a).
BRIGHT ANGEL CREEK BASIN 357

Bright Angel Creek near Grand Canyon, Ariz.

Location.--Water-stage recorder, lat. 36°05'55", long. 112°05'40", 1,000 feet upstream 

1'rom mouth and 11 miles by trail from Grand Canyon, Coconino County. Datum of gage is 

2,452.1 feet above mean sea level (preliminary datum of 1929).

Drainage area. 100 square miles.

Records available.--October 1923 to September 1950.

Average discharge.--27 years, 38.6 second-feet.

Extremes.--Maximum discharge during year, 197 second-feet Oct. 18 (gage height, 3.20 feet); 

minimum daily, 17 second-feet Oct. 7, Sept. 1.

.1923-50: Maximum discharge, 4,400 second-feet Aug. 19, 1936, by slope-area method; 

minimum daily, 15 second-feet on several days during summers of 1934 and 1949.

Remarks.--Records good. Small diversions above station for irrigation. Some fluctuation 

in now caused by power plant 9 miles above station; no regulation by storage.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

18 

18 

18 

18 

18

18 

17 

18 

19 

19

18 

19 

18 

18 

18

19 

20 

42 

25 

22

21 

19 

19 

19 

18

19 

19 

19 

19 

19 

18

Nov.

18 

18 

18 

18 

18

18 

18 

18 

18 

22

21 

19 

19 

19 

19

19

19 

18 

18 

18

18 

18 

18 

18 

18

18 

18 

18 

18 

18

Dec.

18 

18 

18 

19 

19

19 

19 

19 

19 

20

19 

19 

18 

18 

18

19 

19 

20 

20 

20

19 

19 

19 

19 

19

19 

19 

19 

19 

19 

19

Jan.

20 

20 

20 

20 

19

19 

18 

18 

19 

18

19 

19 

19 

19 

19

19 

18 

19 

19 

19

18 

18 

18 

18 

18

18 

18 

19 

21 

20 

19

Feb.

18 

18 

18 

18 

18

19 

54 

24 

20 

20

27 

22 

20 

20 

20

20 

21 

21 

21 

22

20 

20 

19 

19 

19

20 

27 

24

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year- 1949-50 .......................

Mar.

26 

29 

26 

25 

25

26 

27 

27 

27 

27

27 

27 

27 

26 

26

26 

24 

25 

27 

27

30 

31 

32 

32 

39

40 

35 

33 

31 

31 

31

Apr.

33 

41 

54 

69 

74

75 

96 

114 

118 

96

87 

88 

92 

101 

99

92 

94 

109 

116 

125

134 

138 

142 

136 

123

113 

108 

104 

96 

83

Secondfoot-days

609 

553 

587

10,467

584 

609 

892 

2,950 

1,470 

709 

635 

608 

563

10,769

May

80 

74 

71 

71 

64

57 

54 

53 

50 

48

46 

46 

46 

45 

45

44 

44 

45 

45 

45

44 

41

39 

39 

38

36 

35 

33 

32 

30 

30

Maximum

42 

22 

20

189

21 

54 

40 

142 

80 

29 

30 

33 

21

142

June

27 

28 

29 

28 

27

27 

27 

27 

26 

25

24 

23 

23 

23 

23

22 

22 

22 

22 

22

22 

22 

22 

22 

22

21 

20 

20 

21 

20

July

20 

20 

20 

20 

22

22 

23 

22 

24 

21

20 

19 

19 

19 

19

19 

22 

30 

23 

21

20 

19 

19 

20 

20

20 

19 

19 

18 

18 

18

Minimum

17 

18 

18

15

18 

18 

24 

33 

30 

20 

18 

18 

17

17

Aug.

19 

18 

18 

18 

19

19 

18 

18 

18 

19

26 

33 

22 

20 

20

20 

18 

19 

19 

19

19 

19 

19 

19 

19

19 

19 

19 

19 

19 

18

Mean

19.6 

18.4 

18.9

28.7

18.8 

21.8 

28.8 

98.3 

47.4 

23.6 

20.5 

19.6 

18.8

29.5

Sept.

17 

18 

18 

18 

19

20 

21 

21 

19 

19

19 19-

19 

19 

19

19 

18 

18 

18 

18

18 

19 

19 

19 

19

19 

18 

18 

19 

19

Runoff In 

acre-feet

1,210 

1,100 

1,160

20,760

1,160 

1,210 

1,770 

5,850 

2,920 

1,410 

1,260 

1,210 

1,120

21,380

Peak discharge (base. 125 see.-ft.). Oct. 18 (6 p.m. 

ft.) July 18 (2 p.m.; 1S6 sec.-ft.; Aug. 12 (3:30 p.m.)

Oct. 18 (6 p'.m.) 197 sec.-ft.; Apr. 23 (12 p.m.) 146 see.- 

125 see.-ft.
358 VIRGIN RIVER BASIN

Virgin River at Virgin, Utah

Location. Water-stage recorder, lat. 37°12', long. 113°12', in NE£ sec. 28, T. 41 S., R.

 IS~Y7, Ij miles southwest of Virgin and about 2 miles downstream from North Creek. 

Prior to Dec. 19, 1949, chain gage at site lj miles upstream.

Drainage area. 934 square miles.

Records available. April 1909 to September 1950 (fragmentary prior to October 1926.).

Average discharge. 33 years (1909-14, 1915-16, 1917-18, 1923-24, 1925-50), 209 second-feet.

Extremes.--Maximum discharge during year, 4,210 second-feet July 8 (gage height, 8.58 feet), 

by slope-area determinations at 8.58 and 4.81 feet; minimum, 47 second-feet Sept. 2.

1909-50: Maximum discharge observed, 13,500 second-feet Mar. 3, 1938 (gage height, 

10.7 feet, from floodmarks, site and datum then in use), by slope-area method; minimum 

observed, 23 second-feet Sept. 30, 1931.

Remarks. Records good except those for periods of no gage-height record and those prior

 TJoTJec. 19, which are fair. Gage read once daily Oct. 1 to Dec. 18. Diversions above 

station for irrigation.

Discharge, In second-feet, Hater year October 1949 to September 1950

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 

26 

29 

30 

31

Oct.

92 

90 

90 

92 

95

100 

102 

124 

140 

105

.97 

102 

105 

100 

95

80 

116 

226 

136 

108

88 

97 

92 

97 

113

122 

133 

146 

152 

166 

130

Nov.

133 

133 

127 

127 

116

116 

122 

116 

e!40 

e370

ellO 

97 

108 

119 

92

108 

119 

127 

140 

110

140 

133 

133 

133 

127

116 

124 

130 

130 

124

Dec.

130 

130 

136 

124

122

119 

124 

130 

130 

136

124 

119 

119 

113 

97

108 

113 

149 

f292 

f205

158 

155 

158 

158 

161

145 

138 

135 

138 

145 

145

Jan.

169 

189 

145 

f!21 

fl08

fl!2 

fl!7 

119 

128 

132

138 

145 

138 

126 

132

128 

126 

140 

142 

158

163 

169 

169 

246 

166

123 

115 

135 

140 

150 

140

Feb.

128 

119 

126 

140 

155

303 

342

f228 

a!70 

f!61

211 

158 

140 

152 

166

166 

183 

195 

192 

195

192 

166 

166 

175 

189

202 

224 

252

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ha

lendar year 1949 

apy

1.. .....................................

St......................................

ter year 1949-50 .......................

Mar.

245

214 

221 

211 

224

228 

172 

169 

169 

161

158 

152 

130 

138 

140

130 

138 

142 

145 

155

150 

158 

166 

172 

334

224 

186 

183 

172 

172 

175

Apr.

186 

224 

303 

284 

288

280 

342 

373 

373 

266

273 

255 

262 

273 

224

238 

273 

307

292 

288

311 

338 

353 

353 

284

299 

311 

326 

245 

241

Secondfoot -day s

3,531 

3,920 

4,356

63,510

4,429 

5,196 

5,534 

8,665 

5,214 

2,355 

3,624 

2,164 

2,073

51,061

Peak discharge (base, 900 sec. -f t. ) . July 7 (5 a.m.)

May

252 

241 

245 

245 

224

221 

198 

175 

172 

163

' 161 

166 

161 

177 

172

180 

186 

177 

169 

158

150 

148 

138 

135 

132

126 

119 

115 

108 

100 

100

Maximum

226 

370 

292

900

246 

342 

334 

373 

252 

100 

726 

172 

142

726

June

98 

96 

100 

98 

92

88 

85 

86 

85 

86

86 

81 

74 

73 

71

71 

73 

74 

80 

71

71 

70 

71 

71 

70

73 

67 

65 

65 

64

July

63 

63 

61 

57 

61

99

271 

726 

a200 

f!23

115

no

102 

88 

81

74 

71 

133 

110 

85

68 

68 

71 

104 

126

130 

88 

73 

67 

68 

68

Minimum

80 

92 

97

66

108 

119 

130 

186 

100 

64 

57 

55 

51

51

Aug.

68 

76 

71 

68 

71

68 

68 

56 

56 

61

172 

129 

88 

85 

74

70 

64 

64 

60 

58

61 

61 

61 

60 

58

60 

55 

56 

55 

55 

55

Mean

114 

131 

141

174

143 

186 

179 

289 

168 

78.5 

117 

69.8 

69.1

140

Sept.

52 

51 

53 

53 

55

63 

76 

121 

142 

74

71 

68 

70 

70 

65

64 

63 

65 

68 

65

67 

65 

65 

65 

67

65 

67 

67 

68 

68

Runoff In 

acre -feet

7,000 

7,78O 

8,640

126,000

8,780 

1O,310 

10,980 

17,190 

10,340 

4,670 

7,190 

4,290 

4,110

101,300

1,090 sec. -ft.; July 8 (9 a.m.) 4,210 sec.-f

a Ho gage-height record; discharge computed on basis of other Virgin River stations.

e Gage reading not representative of dally mean; discharge computed as explained In footnote a.

f Discharge computed on basis of partly estimated gage-height record.
VIRGIN RIVER BASIN 359

Virgin River at Littlefield, Ariz.

Location.--Water-stage recorder, lat. 36°53 I , long. 113°56', in SW^SWi sec. 4, T. 40 N., 

R. 15 W., three-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 feet above mean sea level. Datum of gage is 1,763.68 feet above mean 

sea level, datum of 1929.

Drainage area.--5,090 square miles.

Records available,--October 1929 to September 1950.

Average discharge.--21 years, 256 second-feet.

Extremes.--Maximum discharge during year, 3,450 second-feet July 18 (gage height, 7.34 

reet); minimum, 58 second-feet Sept. 3.

1929-50: Maximum discharge, 22,000 second-feet Mar. 3, 1938 (gage height, 12.8 

feet, present datum, from floodmarks), by slope-area method; minimum observed, about 50 

second-feet on may days in several years, resulting from nearby fairly uniform spring 

inflow.

Remarks.--Records good. Many diversions above and several below station for irrigation. 

Records of chemical analyses and water temperatures for the water year 1950 are siven 

in Water-Supply Paper 1189.

Revisions (water years). tf 959: 1932. W 979: 1930-31, 1933-37.

Discharge, In second-feet, water year October 1949 to September 195O

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.

108 

101 

94 

92 

92

8484

80 

103 

134

124

122 

122 

117 

124

117 

124 

122 

222 

238

245 

201 

176 

179 

179

173 

164 

159 

159 

153 

148

Nov.

150 

148 

148 

142 

145

134 

145 

156 

153 

170

453 

271 

201 

185 

188

210 

179 

191 

182 

179

182 

185 

188 

185 

179

176 

182 

182 

182 

173

Dec.

167 

159 

159 

153 

170

170 

170 

173 

179 

241

279 

207 

194 

188 

204

204 

210 

227 

302 

435

252 

224 

231 

231 

231

234 

234 

227 

234 

241 

241

Jan.

256 

267 

271 

227 

204

220 

224 

231 

238 

234

220 

234 

245 

234 

227

237 

224 

220 

227 

231

241 

259 

267 

290 

363

263 

220 

224 

234 

241 

249

Feb.

231 

217 

207 

217 

241

271 

524 

550 

302 

282

306 

332 

286 

267 

267

282 

282 

302 

298 

302

294

286 

252 

241 

238

241 

271 

294

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ha

lendar year 194<

ter year 1949-50 .......................

Mar.

298 

298 

286

302 

298

315 

319 

279 

286 

259

249 

249 

245 

238 

224

231 

197 

153 

127 

117

122 

124 

120 

122 

150

400 

275 

214 

185 

145 

145

Apr.

137 

137 

164 

271 

271

259 

279 

319 

368 

381

286 

259 

238 

241 

263

217 

185 

245 

275 

282

275 

302 

311 

315 

286

238 

234 

249 

256

167

~

Secondfoot-clays

4,340 

5,544 

6,771

82,387

7,512 

8,083 

6,972 

7,710 

3,301 

2,030 

5,977 

2,835 

2,981

64,056

May

153 

161 

148 

197 

245

220 

207 

134 

110 

92

86 

82 

84 

84 

86

86 

88 

92 

82 

80

78 

76 

72 

72 

70

72 

72 

70 

68 

67 

67

Maximum

245 

453 

435

986

363 

550 

400 

381 

245 

70 

1,470 

552 

678

1,470

June

67 

68 

68 

68 

67

67 

67 

65 

67 

67

67 

68 

68 

68 

68

65 

68 

67 

67 

67

67 

67 

68 

70 

68

i 70 

70 

68 

68 

70

July

68 

68 

70 

68 

70

72 

289 

659 

656 

213

132 

82 

68 

68 

68

66 

69 

1,470 

27V 

114

86 

77 

77 

75 

196

278 

187 

104 

85 

85 

80

Aug.

71 

68 

71 

68 

66

66 

68 

68 

66 

66

68 

552 

225 

194 

77

66 

64 

66 

65 

66

64 

65 

SB 

64 

65

65 

65 

65 

66 

65 

65

Minimum Mean

80 140 

134 185 

153 218

62 226

204 242 

207 289 

117 225 

137 257 

67 106 

65 67.7 

66 193 

64 91.5 

62 99.4

62 175

Sept.

65 

64

6?

64 

65

64 

117 

678 

267 

155

85 

74 

68 

71 

69

69 

68 

71 

71 

69

66 

66 

66 

66 

66

68 

68 

68 

66 

65

Runoff In 

acre-feet

8,610 

11,000 

13,430

163,400

14,900 

16,030 

13,830 

15,290 

6,550 

4,030 

11,860 

5,620 

5,910

127,100

Peak discharge (base. 1,600 sec. -ft.). July 8 (9 p.m.) 2,470 sec. -ft.; July 18 (7:30 a.m.) 3.450

207384 0-52-24
360 VIRGIN RIVER BASIN

North Pork Virgin River near Springdale, Utah

Location. Water-stage recorder, lat. 37°12'35", long. 112°58'40", in Sw£NW£ sec. 22, T. 41 

 S., H. 10 W., 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. Prior to Dec. 15, 1949, staff gage, 50 feet downstream at 0.34 foot higher 

datum.

Drainage area. 336 square miles.

Records available ..--October 1932 to September 1950. June to November 1923, April 1925 to 

septemoer 1933 at site a quarter of a mile upstream from Pine Creek.

Average discharge.--24 years (1925-31, 1932-60), 104 second-feet.

Extremes. Maximum discharge during year, 2,680 second-feet July 8 (gage height, 7.52 

ree't); minimum, 35 second-feet Aug. 30.

1925-50: Maximum discharge, 7,000 second-feet Mar. 3, 1938 (gage height, 12.29 feet, 

present datum,from floodmark), by slope-area method; minimum observed, 24 second-feet 

Dec. 17, 21, 1928.

Remarks. Records good except those prior to Dec. 15, 1949, and those computed from estimated or partly estimated gage heights, which are fair. Gage read once daily prior to 

Dec. 15, 1949. Figures given herein include Springdale Canal which diverts water in 

NWijNWtr sec. 22, T. 41 S., R. 10 W., for irrigation in vicinity of Springdale. Flow may 

be slightly affected by small diversions above station for irrigation.

Day

1 

2 

3 

4 

5

6

7 

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.

47 

49 

45 

45 

46

46 

45 

48 

a52 

55

59 

55 

54 

54 

52

57 

61 

183 

79 

74

70 

62 

62 

62 

60

60 

60 

60 

58 

58 

60

Nov.

60 

60 

56 

56 

56

54 

55 

55 

57 

302

53 

53 

67 

62 

62

62 

62 

62 

60 

62

62 

60 

60 

60 

57

57 

57 

56 

56 

56

Dec.

54 

50 

48 

49 

46

48 

49 

51 

60 

73

a57 

40 

40 

39 

43

51 

54 

61 

73 

56

52 

47 

49 

52 

51

50 

48 

50 

51 

54 

54

Jan.

67 

65 

59 

47 

43

46 

47 

51 

55 

54

54 

57 

57 

56 

56

53 

56 

59 

59 

62

65 

68 

72 

100 

63

48 

52

61 

62 

63 

61

Feb.

50 

50 

56 

62 

73

134 

123 

75 

62 

65

75 

60 

55 

68 

67

67 

70 

72 

75 

79

78 

71 

72 

78 

84

91 

106 

114

Month ,

Octo 

Nove

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

Ill 

102 

103 

106 

117

113 

83 

88 

83 

82

82 

72 

65 76- 

72

72 

78 

78 

79 

88

84

90 

102 

110 

184

110 

98 

90 

92 

102 

104

Apr.

126 

159 

209 

195 

196

221 

249 

288

228 

166

168 

172 

184 

182 

145

164 

203 

232 

223 

227

259 

284 

295 

279 

236

257 

262 

257 

193 

193

Seeondfoot-days

1,878 

1,997 

1,600

40,842

1,818 

2,132 

2,916 

6,452 

4,141 

1,857 

2,145 

1,399 

1,220

29,555

May

195 

197 

193 

179 

164

165 

143 

133 

132 

124

12S 

132 

130 

143 

138

150 

153 

143 

140 

132

126 

121 

117 

112 

108

99 

95 

93 

89 

84 

83

Maximum

183 

302 

. 73

655

100 

134 

184 

295 

197 

80 

354 

103 

72

354

June

80 

79 

77 

73 

72

70 

69 

69 

69 

68

65 

63 

61 

59 

58

57 

58 

57 

58 

57

57 

55 

55 

55 

55

54 

53 

52 

51 

51

July

51 

50 

48 

50 

55

78 

156 

354 

f!21 

f74

61

60 

58 

53 

53

50 

51 

59 

56

51

49 

49 

50 

57 

55

62 

49 

48 

46 

46 

45

Minimum

45 

53 

39

36

43 

50 

65 

126 

83 

51 

45 

37 

36

38

Aug.

45 

49 

45 

45 

48

46 

45 

44 

42 

44

103 

58 

50 

48 

46

45 

44 

42 

42 

40

40 

41 

41 

40 

40

40 

38 

37 

37 

37 

37

Mean

60.6 

66.6 

51.6

112

58.6 

76.1 

94.1 

215 

134 

61.9 

69.2 

45.1 

40.7

81.0

Sept.

37 

37 

37 

37 

36

38 

46 

72 

57 

42

40 

38 

38 

38 

38

39 

39 

39 

39 

39

39 

39 

39 

39 

39

39 

40 

40 

40 

40

Runoff In 

acre-feet

3,720 

3,960 

3,170

81,000

3,610 

4,230 

5,780 

12,8OO 

8,210 

3,680 

4,250 

2,770 

2,420

58,600

Peak discharge (base. 800 sec.-ft.). July 7 (l a.m.) 915 sec.-ft.; July 8 (9 a.m.) 2,680 sec.-ft.

a No gage-height record; discharge Interpolated.

f Discharge computed on basis of estimated or partly estimated gage heights.
VIRGIN RIVER BASIN 361

Santa Clara River near Central, Utah

Location.--Water-stage recorder, lat. 37°24', long. 113°37', in SE£ sec. 11, T. 39 S., R. 

16 W., 150 feet upstream from road bridge, 1 mile southeast of Central, and l| miles 

upstream from Kane Spring Draw.

Drainage area. 97 square miles.

Records available.--April 1909 to September 1930, November 1938 to September 1950.

Average discharge.--33 years (1909-30, 1938-50), 19.2 second-feet.

Extremes.--Maximum discharge during year, 35 second-feet Apr. 23 (gage height, 1.68 feet); 

minimum, 3.2 second-feet Sept. 29,

1909-30, 1938-50: Maximum discharge, 1,450 second-feet Oct. 6, 1916 (gage height, 

5.0 feet, from floodmarks, site and datum then in use), from rating curve extended 

above 200 second-feet; minimum daily, 2 second-feet on many days in 1939, 1940, 1941.

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

Kany 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 second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17ie

19 

20

21 

22 

25 

24

25

24

ZT 

IB 

29

SO 

31

Oct.

9.9 

9.9 

9.6 

9.6 

9.4

9.1 

9.4 

9.9

11 

11

11 

10 

9.6 

'9.4 9.6 

9.6 

10 

12 

13 

13

13 

' 13 

14 

16 

14

13 

IS 

14 

14 

15 

18

Nov.

15 

15 

15 

14 

14

13 

13 

13 

13 

16

16 

14 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

12 

12 

12

12 

12 

12 

11 

11

Dec.

11 

11 

10 

9.9 

11

12 

12 

12 

12 

12

11 

9.1 

9.9 

11 

11

11 

11 

11 

12 

11

10 

10 

9.9 

9.9 

9.9

9.6 

9.9 

9.9 

9.9 

10 

10

Jan.

11 

11 

9.6 

9.6 

11

12 

12 

12 

12 

12

11 

12 

12 

11 

11

11 

12 

12 

12 

12

12 

12 

12 

13 

12

11 

12 

11 

12 

12 

11

Feb.

11 

11 

11 

11

12

17 

21 

16

14 

13

13

12 

12 

13 

13

13 

15 

15 

15 

16

16 

14 

14 

15 

16

17 

17 

18

Month

Octo 

Hove 

D»ce

Ca

Janu 

Fetor 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Ha

nber. ...................................

lendar year 194'

ter year 1949-50 .......................

Mar.

17 

17 

17 

16 

17

17 

15 

15 

14 

13

11 

11 

11 

12 

11

10 

8.6 

10

14 

15

14 

9.6 

6.9

8.6 

13

12 

11 

12 

12 

12 

12

Apr.

Secondfoot-days

359.0 

395 

329.9

7,274.6

358.2 

401 

394.7 

534 

437 

274.3 

190.2 

130.8 

111.4

3,915.5

IE 

12 

14 

15 

14

16 

16 

16 

15

15

15 

14 

13 

13 

13

13 

13 

15 

22 

27

29 

31 

30 

25 

21

20 

20 

21 

17 

17

May

18 

23 

20 

18 

16

15 

14 

13 

11 

10

11 

12 

13 

13 

12

12 

12 

14 

13 

14

16 

14 

16 

16 

14

14 

15 

12 

12 

12 

12

Maximum

15 

16 

12

97

13 

21 

17 

31 

23 

13 

8.3 

5.0 

4.0

31

June

12

13 

13 

12 

10

11 

12 

9.9 

9.9 

9.9

9.9 

9.1 

9.1 

8.9 

8.3

7.8 

8.1 

8.6 

8.6 

8.3

8.6 

8.6 

7.8 

8.1 

7.3

6.9 

6.9 

6.9 

7.1 

6.7

July

6.4 

6.2 

5.6 

5.2 

5.8

6.4 

7.1 

7.6 

8.3 

7.3

6.9 

6.5 

6.0 

5.5 

5.5

6.0 

8.0 

7.0 

6.5 

6.2

6.2 

6.0 

6.0 

5.8 

5.8

5.6 

5.6 

5.2 

5.0 

4.6 

4.4

Aug.

4.6 

5.0 

4.8 

4.4 

4.4

4.5 

4.5 

4.2 

4.2 

4.4

4.4 

4.4

4.2 

4.4 

4.4

4.4 

4.2 

4.0 

4.O 

4.2

4.2 

4.0 

4.O 

3.9 

3.9

3.9 

3.9 

3.9 

3.9 

3.8 

3.8

Sept.

3.6 

3.6 

3.5 

3.4 

3.4

3.5 

3.6 

3.9 

3.8 

3.5

3.4

3.8 

4.0 

3.8 

3.8

3.8 

3.9 

3.8 

3.8 

3.9

3.8 

3.9 

3.8 

3.8 

3.8

3.8 

3.9 

3.8 

3.5 

3.5

»inlBu» Mean »£«.£

9.1 11.6 71£ 

11 13.2 783 

9.1 10.6 654

6.1 19.9 14,440

9.6 11.6 710 

11 14.3 795 

. 6.9 12.7 783 

12 17.8 1,060 

16 14.1 867 

6.7 9.14 544 

4.4 6.14 377 

3.8 4.22 259 

3.4 5.71 221

3.4 10.7 7,760

Peak discharge (base, 60 sec.-ft._). No peak above base.

_._... _._ _ . __ ___ record July 12-26; discharge computed on basis of engineer's notes and recorSTTor Santa Clara River aboye Wlnd»orJ>«jia, near Santa Clara.
362 VIRGIN RIVER BASIN

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

Location.--Water-stage recorder, lat. 37°13', long. 113°47', near center of sec. 17, T. 41 

 S. , R. 17 W., 2 miles upstream from Winsor Dam, Z\ miles downstream from Sandy Wash, 

8 miles downstream from Magotsu Creek, and 9 miles northwest of Santa Clara.

Drainage area.--338 square miles.

Records available. March 1942 to September 1950.

U'i^-OU: IHclAJJIlLUU U-LHUIlcU&c, Ulicll/ Ui <JUJ.y J-' » J-JiJW; 1UC1A.UULUH &d&c 11CJ.&I

July 31, 1945, July 17, 1950; minimum discharge, that of Sept. 15, J950.

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

1039........

1059.. ......

1089. .......

1119. .......

1149..'.... ..

Water 

year

1945

1946

-1947

1948

1949

Date

July 31

Aug. 12

Sept. 9

Gage height 

(feet)

6.50

4.34

6.25

4.97

3. 65

Discharge 

(second- feet)

2,100

685

2,400 '

1,080

398

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

Many diversions above station for irrigation. Flow slightly regulated by plants of 

Southern Utah Power Co.

Revisions.--Figures of peak discharge for the water year 1948, superseding those published 

in Water-Supply Paper 1119, have been revised as follows: Aug. 3 (8 p.m.) 494 sec.-ft.; 

Aug. 8 (1 a.m.) 1,050 sec.-ft.; Sept. 16 (3:30 a.m.) 1,080 sec.-ft.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14

IS

16 

17 

18 

19 

20

21 

22 2«5 

24 

25

26 

27 

28 

29 

30 

31

Oct.

17 

17 

17

17 

17

16 

16 

17 

18 

18

18 

18 

18 

18 

17

18 

18 

18 

21 

25

23 

24 

22 

23 

23

22

21 

24 

24 

26 

26

Nov.

27 

26 

25 

24 

24

24 

25 

24 

25 

28

30 

28 

23 

30 

35

30 

26 

20

21 

21

22 

23 

23 

21 

21

22 

19 

22 

23 

18

Dec.

19 

19 

17 

19 

18

19 

19 

23 

23 

25

23 

26 

23 

25 

23

24 

23 

26 

36 

28

25 

23 

23 

23 

23

23 

24 

25 

24 

24 

24

Jan.

24 

24 

24 

21 

22

24 

24 

25 

26 

25

27 

27 

25 

21 

20

23

23 

28 

30 

32

29 

31 

34 

53 

35

26 

26 

25 

25 

25 

24

Feb.

25 

26 

27 

24 

23

26 

52 

52 

35 

33

37 

30 

29 

29 

27

26 

30 

34 

36 

38

38 

31 

33 

30 

29

31 

34 

38

Month

Goto 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

38 

35 

34 

33 

32

32 

31 

30 

29 

28

29 

31 

31 

27 

24

21 

19 

19 

19 

18

18 

20 

21 

22 

23

26 

25 

21

21 

21 

21

Apr.

21 

22 

23 

26 

26

25 

21 

19 

20 

22

22 

22 

23 

24 

21

21 

20 

20 

19 

21

23 

26 

30 

30

27

29 

27 

26 

27 

26

Secondfoot-days

617 

730 

719

11,175.5

828 

9O3 

799 

709 

606 

455 

471.2 

258.4 

267.9

7,363.5

May

24

21 

22 

25 

26

23 

21 

23 

22 

21

21 

18

16 

16 

17

18 

18 

18 

17 

18

20 

21 

18 

18 

18

19 

18

17 

18 

18 

16

Maximum

26

35 

36

137

53 

52 

38 

30 

26 

19 

88 

11 

28

88

June

16 

18 

19 

16 

18

17 

18 

16 

19 

16

18 

17 

16 

17 

16

15 

15 

14 

14 

14

14 

12 

12 

12 

14

14 

13 

13 

12 

10

July

10 

9.6 

10 

9.6

11

13 

12 

11 

13 

13

12 

11 

12 

11 

12

11 

88 

60- 

15 

12

11 

12 

11 

12 

10

11 

10 

9.6 

9.2 

10 

9.2

Minimum

16 

18 

17

8.9

20 

23 

18 

19 

16 

10 

9.2 

6.2 

3.3

3.3

Aug.

9.2 

9.2

10 

11 

10

9.2 

8.4 

7.1 

8.8 

9.2

9.6 

8.8 

9.6 

9.6 

8.8

7.7 

7.4 

7.4 

8.8 

8.8

7.1 

8.4 

7.4 

7.1 

8.4

7.7 

7.4 

6.5 

7.1 

6.5 

6.2

Mean

19.9 

24.3 

23.2

30.6

26.7 

32.2 

25.8 

23.6 

19.5 

15.2 

15.2 

8.34 

8.93

20.2

Sept.

5.3 

6.5 

4.8 

7.1 

6.5

8.8 

28 

12 

11 

8.0

7.1 

8.4 

8.4 

8.8 

3.3

5.6 

8.0 

12 

7.7 

9.2

9.6 

10 

7.4 

8.8 

9.6

10 

8.8 

8.8 

8.8 

9.6

Runoff In 

acre-feet

1,220 

1,450 

1,430

22,170

1,640 

1,790 

1,580 

1,410 

1,200 

902 

935 

513 

531

14,600

Peak discharge (base, 500 sec.-ft. ). July 17 (8:50 p.m.) 2,730 sec.-ft.

Note. No gage-height record Oct. 1-10, July 18-23j discharge computed on basis of engineer's notes 

and records for station near Central.
VIRGIN RIVER BASIN 363

Muddy River near Overton, Nev.

Location.--Water-stage recorder, lat. 36°38', long. 114°30i, In NW^NE^ sec. 21, T. 15 S., 

K. 67 E., at Wells Siding diversion dam, 2 miles northwest of Logandale, 5 miles downstream from Meadow Valley Wash, 6-| miles northwest of Overton, and 1\ miles southeast 

of Moapa. Control for station is crest of Wells Siding diversion dam. Datum of gage 

is 1,432.16 feet above mean sea level, datum of 1929 (Bureau of Reclamation bench mark),

Drainage area.--8,180 square miles, much of which is noncontributing.

Records available.--December 1947 to September 1950. May 1913 to September 1916 at site 

15 miles downstream, a quarter of a mile above mouth.

Extremes. Maximum daily discharge during year, 30 second-feet Dec. 26, 27; no flow for 

many days.

1947-50: Maximum daily discharge, 71 second-feet Feb. 29, 1948; no flow for many 

days.

Highest floods known, Mar. 3, 1938 (discharge, 10,000 second-feet, estimated) and 

Aug. 11, 1941 (discharge, 12,000 second-feet, estimated, revised).

Remarks.--Records fair. Record shows flow below Wells Siding diversion dam and does not 

include water diverted at dam for irrigation or for storage in Bowman Reservoir. Flow 

in canals diverting at dam was measured May 18 as follows: East Canal, 11.3 secondfeet; West Canal, 30.3 second-feet. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

Z

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

Oct. Nov.

0 

0 

0 

0 

0

0 

0 

0 

0

o

0

.1 

.1

.6 

.4

1.4 

1.4 

1.8 

3.0 

3.0

3.4 

3.4 

3.9 

3.0 

4.4

4.8 

4.8

5.7 

5.2 

6.2

Dec.

5 2 

5 2 

7 6 

8 6 

8 6

8 6 

9 8 

9 8 

12 

15

14 

12 

13 

13 

17

26 

27 

29 

28 

21

23 

23 

23

28

30 

30 

28 

28

27

26

Jan.

28 

28 

26 

19 

19

20 

21 

22 

21 

21

21 

22 

23 

23 

24

21 

23 

23 

23

23 

23 

24 

22 

20

18 

18 

22 

24 

22 

20

Feb.

20 

18 

18 

18 

17

12 

1.2 

0 

0 

0

0 

0 

0 

0

o

0 

0 

0 

0 

0

0

0 

0

0 

0

0 

.7 

.7

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mflv

June 

July 

Augu 

Sept

Wa

ber.. ...................................

lendar year 1949

ter year 1949-50 .......................

Mar.

0 7 

4 

7 

7 

7

.1 

0 

0 

0 

0

0

0 

0 

0 

0

0 

0 

0 

0

o

0

0 

0

o

0

0 

0 

0 

0 

0 

0

Apr.

0 

0 

0 

0 

0

0 

0

o

0

o

0

o

0 

0

0

0

o

0 

0 

0

0

0 

0 

.5

1

1 

1 

1 

1 

2

Secondfoot-days

0

56.6 

582.4

2,821.0

687 

105.6 

3.3 

7.5 

8.6 

.3 

2.0 

0 

0

1,453.3

May

2 

2 

2 

1

.5

.4 

.3 

.2 

.1 

0

0

0

o

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

o

0 

0 

0

.1

Maximum

0

6.2 

30

36

28 

20 

.7 

2 

2 

.2 

1.7 

O 

0

30

June

0.2 

.1 

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 

0 

0

July

0 

0 

0 

0

.3

1.7 

0 

0 

0 

0

0

0 

0 

0 

0

0 

0 

0 

0 

0

0

0

o

0 

0

0 

0 

0 

0 

0

o

Minimum

0

0 

5.2

0

18 

0 

0 

0 

0 

0

o

0 

0

0

Aug.

Mean

0 

1.89 

18.8

7.73

22.2 

3.77 

1.06 

.25 

.28 

.01 

.06 

O 

0

3.98

Sept.

Runoff In 

acre-feet

0 

112 

1,160

5,600

1,360 

209 

6.5 

15 

17 

.6 

4.0 

0 

0

2,880
364 VIRGIN RIVER BASIN

Meadow Valley Wash near Panaca, Nev.

Location. Water-stage recorder, lat. 37°52' , long. 114"19' , in sec. 13, T. 1 S., R. 68 

K. , 200 feet downstream from road bridge at Delmues Ranch, 6 miles northeast of Panaca, 

and 9 miles southeast of Pioche.

Drainage area. 450 square miles.

Records available. November 1944 to January 1950 (discontinued).

Extremes. Maximum discharge during period October 1949 to January 1950, 19 second-feet 

 Dec. 3 (gage height, 1.35 feet); minimum daily, 0.4 second-foot Oct. 1, 2.

1944-50: Maximum discharge, 946 second-feet Aug. 5, 1946 (gage height, 4.40 feet), 

from rating curve extended above 33 second-feet on basis of two slope-area measurements; minimum daily, 0.1 second-foot July 4, 1945, May 13, Aug. 10, Sept. 23-30, 1946.

Remarks. Records fair. Diversions above station for irrigation. 

Revisions.--W 1089: Drainage area.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

E 

7

e

9 

10

11

12

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

0.4 

.4 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.7 

.8

.6 

.5 

.7 

1.0 

2.3

2.5 

2.5 

2.5 

2.6 

3.0

3.0 

3.5 

3.5 

3.7 

3.5 

3.5

Oeto 

Hove 

D>c«

Ca

Janu 

F«br 

Marc 

Apri 

May.

June 

July 

Aufcu 

Sept

Th

Nov.

3.7 

3.7 

4.0 

4.0 

4.0

4.2 

4.2 

4.9 

4.9 

7.1

6.8 

7.1 

6.5 

5.8 

5.8

5.4 

5.4 

5.4 

5.4 

5.4

5. 

5. 

5. 

5.

5.

5. 

5. 

5.

5.1 

5.1

Dec.

5.1 

4.4 

4.9 

4.4 

4.9

4.4 

5.1 

5.8 

6.1 

4.6

2.8 

2.2 

2.0 

2.0 

2.0

2.2 

2.3 

3.3 

4.2 

4.4

2.8 

2.0 

2.3 

2.3 

2.6

2.2 

2.0 

2.2 

2.3 

2.6 

3.0

Jan.

4.0 

4.9 

3.7 

2.0 

2.2

2.0 

2.0 

2.0 

2.0 

2.3

2.5 

2.3 

2.5 

2.5 

2.5

2.5 

2.3 

2.8 

4.4 

4.9

5.8 

6.1

6.8

Feb.

Month

 bar. ...................................

*ber. ...................................

l«ndar y 

ary 1-23

ear

e period. ...............................

Mar. Apr.

Secondfoot-days

46.7 

156.8 

103.4

1,353.4

75.0

-

May

Maximum

3.7

7.1 

6.1

39

6.8

-

June

Minimum

July

0.4 

3.7 

2.0

.2

2.0

-

Aug.

Mean

1.51 

5.23 

3.34

3.71

3.26

-

Sept.

Runoff In 

acre-feet

93 

311

205

2,681

149

758

Peak discharge (base, 100 see.-ft.). Ho peak above base.
BILL WILLIAMS RIVER BASIN 365

Bill Williams River near Alamo, Ariz.

Location. Water-stage recorder, lat. 34° 14', long. 113°351, in SW^NW^ sec. 2, T. 10 N., 

K. 13 W., 1.5 miles downstream from Alamo, 2.0 miles downstream from mouth of Bullard 

Wash, and 6 miles downstream from confluence of Santa Maria and Big Sandy Rivers. 

Datum of gage is 1,002.95 feet above mean sea level, datum of 1929.

Drainage area.--4,73 0 square miles, of which 400 square miles is below confluence of Santa 

Maria ana Big Sandy Rivers.

Records available. December 1939 to September 1950. 

Average discharge. 10 years, 123 second-feet.

Extremes.--Maximum discharge during year, 1,850 second-feet Sept. 6 (gage height, 6.80 

 feet); minimum daily, 4.8 second-feet June 21, 22, July 7,

1939-50: Maximum discharge, 38,200 second-feet Mar. 14, 1941 (gage height, 23.0 

feet); minimum, 3 second-feet Aug. 21, 1942, on several days in May and July 1943, and 

on July 24, 1946.

Flood of Sept. 6, 1939, reached a stage of 39.6 feet, from floodmarks (discharge, 

77,000 second-feet, from slope-area measurement made just below confluence of Santa 

Maria and Big Sandy Rivers). Floodmarks indicate a previous stage of about 46 feet,

Remarks. Records fair except those for periods of doubtful or no gage-height record, 

whicn are poor. Diversions above station for irrigation. At low stages some groundwater inflow occurs below station as shown by the following measurements made June 16: 

at gage, 6.36 second-feet; 400 feet downstream, 6.95 second-feet; 850 feet downstream, 

7.16 second-feet; 1,250 feet downstream, 6.15 second-feet.

Discharge, in second-feet, -water year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7 

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.

5 

5 

5 

6 

6

7 

8 

9 

11 

13

15 

17 

18 

20 

20

20 

20 

100 

300 

25

12 

11 

10 

10 

10

10 

10 

10 

10 

10 

10

Nov.

10

10 

10 

10 

10

9.1 

9.1

8.6 

8.6 

10

6.6 

6.6 

8.6 

8.6 

9.1

9.1 

9.6 

9.1 

9.1 

9.1

9.1 

9.1 

9.1 

9.1 

8.6

8.6 

8.6 

8.6 

8.6 

8.6

Dec.

8.6

8.6 

8.6 

8.6 

8.6

9.1 

9.1 

8.6 

9.1 

10

9.6 

9.6 

9.6 

9.6 

9.6

9.6 

9.1

9.1 

9.1 

9.6

9.6 

9.6 

9.6 

9.6 

9.6

9.1 

9.1

9.1 

9.1 

9.1 

9.1

Jan.

9.6 

9.6 

9.6 

9.1 

9.1

9.1 

9.1 

9.6 

9.6 

9.6

9.1 

9.1 

9.1 

9.1 

9.1

9.1 

9.1 

9.1 

9.1 

9.1

9.1 

9.1 

9.6 

9.6 

9.6

9.6 

10 

10 

10 

10 

10

Feb.

10 

10 

10 

10 

10

10

11 

11 

11 

11

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

11

11 

10

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Apr!

Mo v

June 

July 

Augu 

Sept

Va

lendar year 1949

ter year 1949-50 .......................

Mar.

10 

11 

11 

11

11

11 

11 

11 

12

12

12 

12 

12 

12 

12

11 

11 

11 

11 

11

11 

11 

11 

11 

12

12 

12 

12 

12 

12 

12

Apr.

12 

11

11 

11

11

11 

11 

10 

10 

10

10 

10 

10

9.6 

9.6

9.6 

9.6 

9.6 

9.1 

9.1

8.0 

8.0 

8.0 

8.0 

8.0

8.0 

8.0 

8.0 

8.0 

8.0

Secondfoot-days

743 

272.9 

286.0

29,532.2

291.6 

316 

354 

284.2 

233.7 

166.7 

431.7 

219.7 

598.8

4,198.3

May

8.0 

8.0 

8.6 

8.6 

8.0

8.0 

8.0 

8.0

7.5 

7.5

7.5 

7.5 

7.5 

7.5 

7.5

7.0 

7.0 

7.0 

7.0 

7.0

7.5 

7.5 

7.5 

7.5 

7.5

8.0

7.5 

7.0 

7.0 

7.0 

7.0

Maximum

300 

10 

10

2,090

10 

12 

12 

12 

8.6 

7.0 

70 

17 

211

300

June

7.0

6.5 

6.5 

6.5 

5.9

5.9 

5.4 

5.4 

5.4 

5.4

5.4 

5.4 

5.4 

5.4 

5.4

5.4 

5.1 

5.1 

5.1 

5.1

4.8 

4.8 

5.1 

5.4 

5.9

5.4 

5.9 

5.9 

5.4 

5.4

July

5.4 

5.1 

5.1 

d!5 

dlO

d!5 

4.8 

5.9 

12 

17

8.6 

7.0

6.5 

5.9 

5.9

6.5 

5.9 

5.4 

5.4 

5.4

5.4 

7.6 

70 

52 

61

38 

11 

7.5 

7.5 

5.9 

8.0

Minimum

5 

8.6 

8.6

4.5

9.1

10 

10 

8.0 

7.0

4.8 

4.8 

5.4 

5.4

4.8

Aug.

9.1 

7.0 

7.0 

7.0 

7.0

7.0 

7.0

6.5 

6.5

6.5

6.5 

5.9 

5.9 

5.9 

5.9

5.9 

5.9 

5.4 

5.9 

5.9

5.9 

5.9 

6.5 

17 

17

7.5 

6.5 

6.5 

5.9 

5.9 

5.4

Mean

24.0 

9.10 

9.23

80. 9 '

9.41 

11.3 

11.4 

9.47 

7.54 

5.56 

13.9 

7.09 

20.0

11.5

Sept.

5.4 

5.4 

6.5 

6.5 

7.0

77 

211 

81 

34 

20

15 

10 

8

7 

7

7 

6.5 

6.5 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

Runoff in 

acre-feet

1,470

541 

567

58,580

578 

627 

702 

564 

464 

331 

856 

436 

1,190

8,330

Peak discharge (base. 900 see.-f t.) . July 23 (8:30 p.m.) 958 sec. -ft. ; Sept. 6 (10 p.m.) 1,850 

sec.-ft.

d Doubtful gage-height record; discharge computed on basis of records for Santa Maria River near 

Alamo.

Note. No gage-height record Oct. 1-21, Sept. 10-21; discharge computed on basis of floodmark and 

records for Santa Maria River near Alamo.
366 BILL WILLIAMS RIVER BASIN

Santa Maria River near Alamo, Ariz.

Location. Water-stage recorder, lat. 34°18 I , long. 113°31 I , in NE^SW^ sec. 9, T. 11 N., 

H. 12 W., half a mile upstream from confluence with Big Sandy River and 5^ miles upstream from Alamo. Datum of gage is 1,126.6 feet above mean sea level (from riverprofile survey).

Drainage area. 1,520 square miles.

Records available.--December 1939 to September 1950.

Average discharge. 10 years, 41.3 second-feet.

Extremes.--Maximum discharge during year, 1,570 second-feet Oct. 18 (gage height, 7.09 

1'eet); minimum daily, 0.8 second-foot July 2, 3.

1939-50: Maximum discharge, 15,000 second-feet Sept. 6 or 7, 1939, Mar. 14, 1941 

(gage height, 9.85 feet), by slope-area method; minimum, less than 1 second-foot on 

many days in most years.

Floodmarks indicate a stage of 12.0 feet occurred probably in 1937 or 1938.

Remarks.--Records poor. Several diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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 

Z9 

30 

31

Oct.

1.3

1.3 

1.6 

1.9 

2.4

2.4 

2.4

3.0 

4.7 

8.3

8.3 

12 

14

16 

16

16 

22 

275 

276 

10

3.7 

3.7 

3.0 

3.0

3.0 

2.4 

2.4 

2.4 

2.4 

2.4

Nov.

2.4 

1.9 

1.9 

1.9 

1.9

1.9

1.9 

1.9 

2.4 

5.8

3.0 

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

Dec.

2.4 

2.4 

2.4 

2.4 

2.4

3.0

3.0 

2.4 

2.4 

8.3

3.7 

2.4 

2.4 

2.4 

2.4

2.4 

3.0 

3.0 

3.0 

3.7

2.4 

2.4 

2.4 

2.4

2.4 

2.4 

2.4 

2.4 

2.4 

3.0

Jan.

3.0 

3.0 

3.0 

3.0 

3.0

3.0 

4.7 

5.8 

5.8 

4.7

4.7 

4.7 

5.8 

5.8 

4.7

4.7 

4.7 

4.7 

4.7 

4.7

4.7 

4.7 

4.7 

4.7

3.7 

3.7 

4.7 

7.0 

8.3 

5.8

Feb.

5.8 

5.8 

4.7 

4.7 

4.7

4.7 

5.8 

5.8 

4.7 

4.7

7.6 

7.0 

5.8 

5». 8 

5.8

5.8 

5.8 

5.8 

5.8 

5.8

5.8 

5.8 

5.8 

5.8

4.7 

8.3 

7.0

Month

Goto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Mav

June 

July 

Augu 

Sept

tfa

lendar year 1949

1............ ...........................

ter year 1949-50 .......................

Peak discharge (base, 200 sec. -ft.). Oct.

Mar.

5.8 

5.8 

5.8 

5.8 

4.7

3.7 

4.7 

4.7 

4.7 

5.8

5.8 

5.8 

5.8 

4. 

4.

3.

3. 

3. 

4. 

4.

4. 

4. 

5.8 

4.7

4.7 

3.7 

4.7 

4.7 

4.7 

4.7

Apr.

4. 

3.

3. 

3.

3. 

3. 

3. 

3. 

3.

3. 

3.

3. 

3. 

3.

3. 

3. 

3.0 

3.0 

3.0

3.0 

3.0 

3.0 

3.0

3.0 

3.0 

3.0 

3.0 

3.0

Secondroot-days

728.0 

72.5 

86.5

8,272.4

144.9 

160.3 

150.6 

101.5 

69.8 

56.9 

170.3 

100.9 

114.3

1,956.5

18 (8 p.m.)

May

3.0 

3.0 

3.0 

3.0 

3.0

3.0 

2.4 

2.4 

2.4 

2.4

3.0 

2.4 

2.4

2.4

2.4 

2.4 

1.9 

1.6 

1.6

1.9 

1.9 

1.6

1.6

1.9 

1.9 

1.6 

1.9

1.9 

1.6

Maximum

278 

5.8 

8.3

556

8.3

8.3 

5.8 

4.7 

3.0 

2.4 

36 

33 

42

278

June

1.6 

1.9 

1.9

1.9 

1.9

1.9 

1.9 

1.9 

1.9

2.4

1.9 

1.9 

1.9

1.9

1.9

1.9 

1.9 

2.4 

2.4

1.9 

1.9 

1.9 

1.9

1.9 

1.9

1.6 

1.3 

1.0

Minimum

July

1.0

.s

.8 

14 

6.4

14 

3.0 

3.7 

13 

3.6

2.4 

1.6 

1.3

1.6

1.6 

1.9 

1.9 

1.9 

1.9

1.6 

1.3 

2.5 

36 

14

10 

8.3 

5.8 

4.7 

4.7 

3.7

1.3 

1.9 

2.4

.3

3.0 

4.7 

3.7 

3.0 

1.6 

1.0 

.8 

1.3 

1.0

.8

1,570 sec. -ft.; Sept.

Aug.

3.7 

3.0 

3.7 

3.7 

3.7

3.7 

3.0 

3.0 

3.0 

2.4

2.4 

2.4 

2.4

1.5

1.3 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

1.3

33 

3.3

2.4 

dl.9 

dl.6 

dl.6 

dl.6 

dl.6

Mean

23.5 

2.42 

2.79

22.7

4.67 

5.72 

4.86 

3.38 

2.25 

1.90 

5.49 

3.25 

3.81

5.36

6 (10 p.m.

Sept.

dl.6 

dl.3 

dl.3 

1.3 

1.3

24 

42 

10 

4.7 

3.0

2.4 

1.9 

1.6

1.3

1.0 

1.0 

1.3 

1.0 

1.0

1.0 

1.0 

1.0 

1.0 

1.0

1.0 

1.0 

1.0 

1.0

1.0

Runoff in 

acre-feet

1,440 

144 

172

16,410

287 

318 

299 

201 

138 

113 

338 

200 

227

3,880

) 388 sec.-

d Doubtful gage-height records discharge computed on basis of weather records and records for Bill 

Williams River near Alamo.

Note. River not directly connected to gage except Oct. 18, 19, Aug.- 24, Sept. 6, 7; discharge 

computed on basis of recorded variation in ground-water level and 12 discharge measurements.
GILA RIVER BASIN 367

Glla River near Gila, N. Mex.

Location.--Water-stage recorder, lat. 33°04'05", long. 108°32'10", In SE^SW^- sec. 19, T. 

14 s.", R. 16 W., at Hooker dam site, 1 mile upstream from Mogollon Creek and 7 miles 

northeast of Glla. Datum of gage Is 4,655.8 feet above mean sea level (from riverprofile survey).

Drainage area.--1,870 square miles.

Records available.--April to December 1914 (at site 5 miles upstream and a quarter of a 

mile downstream from Turkey Creek) and October 1930 to September 1950 In reports of 

Geological Survey. April to December 1914, November 1927 to December 1928 (at site 

5 miles upstream and a quarter of a mile downstream from Turkey Creek), and January 

1929 to December 1931 in reports of State engineer.

Average discharge. 22 years (1928-50), 135 second-feet.

Extremes.--Maximum discharge during year, 318 second-feet July 29 (gage height, 3.39 

feet); minimum daily, 24 second-feet June 19-21, 30, July 1.

1930-50: Maximum discharge, 25,400 second-feet Sept. 29, 1941 (gage height, 17.2 

feet, from floodmark), from rating curve extended above 1,100 second-feet on basis of 

velocity-area studies and logarithmic plotting; minimum daily, 19 second-feet July 15,

Remarks.--Records good. 

been abandoned.

The one known small diversion above station for irrigation has

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

63 

61 

59 

59

61

61 

59 

57 

56 

56

59 

59 

59

57 

59

59 

63

68 

66 

66

66 

66 

68 

68 

66

66 

66 

66 

65 

65 

65

Nov.

65

63 

63 

61 

61

61 

59 

61 

59

61

65

66 

65 

65 

63

63

63 

63 

63 

63

61

61 

61 

61 

59

61 

61 

59 

59 

59

Dec.

63 

66 

70 

66 

65

63 

63 

63

65 

78

113 

105 

87 

78

74

70 

70 

70 

68 

68

68

68 

66 

65 

65

65 

63 

63 

63 

65 

65

Jan.

68 

72 

98 

91 

85

76 

72 

70 

70

70

72 

70 

72 

70 

70

70 

70 

70 

70 

70

70 

70 

70 

70 

72

72 

72 

70 

70 

70 

72

Feb.

70 

70 

70 

68 

68

68 

66 

68 

68

68

70

72 

70 

68

68 

68 

68

66 

66

68 

68 

68 

68 

68

68 

76 

78

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

80 

89

96 

110 

115

110 

105 

101 

98 

93

91 

87 

85 

83 

80

78 

78

76 

74 

72

72 

72 

70 

70 

72

74 

76 

74 

72 

70 

70

Apr.

" 70

70 

72

74 

76

78 

80 

80 

83 

83

83 

83 

87 

85 

80

78

78 

76 

74 

74

72 

72 

72 

72 

70

68 

68

68 

66 

65

Secondfoot-daya

1,934 

1,855 

2,181

111,184

2,254 

1,934 

2,593 

2,257 

-1,547 

942 

2,478 

2,530 

1,625

24,130

May

63 

61 

59 

59

61

61 

59 

57 

56

56

54 

52 

50 

50 

50

49 

48 

48

46 

46

44 

44 

44 

43 

44

43 

44 

43 

38 

38 

37

Maximum

68 

66 

113

6,920

98 

78 

115 

87 

63 

42 

260 

225 

115

260

June

37 

42 

42 

40 

38

38 

37

36 

36 

34

34 

31 

30 

30 

30

29 

27

26 

24 

24

24

27 

31 

33 

31

29

26 

26 

26 

24

July

24

26 

26 

27 

38

56 

50 

52 

85 

78

80 

68 

57 

68 

56

48 

49 

48 

44

54

50 

88 

72 

85 

115

85 

80 

136 

238 

235 

260

Minimum

56 

59 

63

50

68 

66 

70 

65 

37 

24 

24 

36 

34

24

Aug.

225 

195 

179 

167 

136

113

96 

83 

76 

68

66 

78 

78 

76 

74

78 

68 

63 

57 

54

54 

50 

49 

48 

48

48 

44 

43 

42 

38 

36

Mean

62.4 

61.8 

70.4

305

72.7 

69.1 

83.6 

75.2 

49.9 

31.4 

79.9 

81.6 

54.2

66.1

Sept.

38 

43

44 

38

54

63 

59 

59 

46 

43

42 

38 

37 

36 

34

34 

37 

63 

99 

115

83

66 

61 

61 

63

66 

56 

50 

48 

49

Runoff In 

acre-feet

3,840 

3,680 

4,330

220,500

4,470 

3,840 

5,140 

4,480 

3,070 

1,870 

4,920 

5,020 

3,220

47,880

Peak discharge (base, 600 sec.-ft.). No peak above base.
368 GILA RIVER BASIN

Gila River near Cliff, N. Mex.

Location . --Water-stage recorder, lat. 32°56 I 20", long. 108°36'20", in Sj sec. 4, T. 16 S . ,

W. , on U. S. Highway 260, ! § miles downstream from Bear Creek, miles south of

Cliff, 2j miles southwest of Gila and 6j miles upstream from Mangas Creek. 

gage is 4,454.5 feet above mean sea level, datum of 1929.

Datum of

Records available.-- January 1942 to September 1950. September 1904 to December 1907 at 

site b^ miles downstream, below Mangas Creek (gage heights only prior to May 22, 1905, 

and during 1907) .

Extremes . Maximum discharge during year, 3,150 second-feet Aug. 4 (gage height, 6.46 

reet j ; minimum daily, 11 second-feet June 18, 19, July 1, 2, 4.

1942-50: Maximum discharge, 17,200 second-feet Jan. 14, 1949 (gage height, 12.6 

feet), by slope-area method; minimum daily, 5.8 second-feet July 2, 7, 1946, Aug. 8, 

1947.

Maximum stage known, 14.0 feet Sept. 29, 1941.

Remarks . Records good except those for July to September, which are fair, and period of 

no gage-height record, which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3

4 

5

6 

7

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.

54 

62 

58 

64 

84

82 

54 

46 

51 

52

52 

52 

57 

57 

62

57 

60 

73 

67 

71

71 

73 

74 

71 

67

64 

65 

69 

67 

67 

67

Nov.

62 

64 

64 

64 

60

62 

69 

67 

69 

69

69 

74 

78 

78 

78

SO 

76 

73 

73 

76

67 

67 

69 

67 

64

65 

62 

64 

60 

60

Dec.

65 

65 

71 

73 

69

64 

65 

64 

76 

92

127 

137 

118 

102 

98

92 

86 

86

88 

86

84 

82 

80 

78 

76

76 

74 

71 

73 

73 

74

Month

Octo 

Hove 

Dece

Ca

Janu 

Febn 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

Jan.

76 

82 

96 

98 

94

88 

84 

82 

82 

84

84 

86 

88 

88 

86

84 

84 

82 

84 

84

86 

86 

84 

84 

86

88 

88 

88 

86 

86 

86

Feb.

86 

84 

84 

82 

82

80 

78 

74 

76 

69

78 

82 

74 

73 

74

73 

73 

71 

69 

62

64 

64 

71 

64 

64

74 

82 

78

lendar year 1949

ter year 1949-50 .......................

Mar.

84 

100 

98 

107 

118

116 

109 

111 

102 

94

98 

84 

80 

67 

67

56 

54 

6O 

65 

57

50 

50 

40 

37 

48

84 

84 

67 

51 

46 

46

Apr.

48 

48 

44 

41 

34

35 

39 

34 

56 

48

39 

37 

45 

40 

48

48 

40 

39 

34

29

32 

32 

38 

38 

37

37 

34 

37 

38 

41

Secondfoot-days

1,970 

2,050 

2,565

139,035

2,664 

2,085 

2,330 

1,190 

956 

484 

2,410 

2,973 

1,931

23,608

Peak discharge (base, 2,500 sec. -ft.). Julv 24 (9:10

May

39 

33 

26 

34 

48

43 

45 

45 

44 

44

38 

33

26 

25 

24

23 

26 

34 

26 

26

26 

27 

21 

28 

20

23 

27 

23 

27 

32 

30

Maximum

84 

80 

137

10 , 90O

98 

86 

118 

56 

48 

31 

316 

442 

364

442

June

31 

30 

28 

26

25

17 

19 

16 

16

15

16 

14 

14 

14 

13

12 

12 

11 

11 

12

13 

14 

15 

14 

14

14

12 

12 

12 

12

July

11 

11 

12 

11 

12

16 

26 

4O 

57 

SO

113 

73 

43 

45 

37

25 

22 

19 

21 

39

81 

39 

31 

249 

129

44 

64 

156 

316 

301 

287

Minimum

46 

60 

64

19

76 

62 

37 

29 

20 

11 

11 

18 

15

11

Aug.

263 

222 

289 

442 

312

a20O 

a!23 

alOO 

a8O 

a70

a6O 

a7O 

a70 

a70 

a65

a70 

54 

43 

45 

45

39 

38

29 

25 

24

24 

22 

21 

20 

20 

18

Mean

63.5 

68.3 

82.7

381

85.9 

74.5 

75.2 

39.7 

3O.8 

16.1 

77.7 

95.9 

64.4

64.7

Sept.

70 

34 

24 

22

24

57 

62 

62 

62 

52

37 

25 

20 

15 

20

22 

42 

48 

116 

105

78 

64 

60 

364 

107

90 

78 

62 

52 

57

Runoff In 

acre-feet

3,910 

4,070 

5,090

275,800

5,28O 

4,140 

4,620 

2,360 

1,900 

960 

4,780 

5,9OO 

3,830

46,840

p.m.) 3.O50 sec. -ft. j Aug. 4 (9:20 p.m.)

3,150 sec.-ft.

a No gage-height record; discharge computed on basis of records for stations near Gila and near 

Red Rock.
GILA RIVER BASIN

Gila River near Red Rock, N. Mex.

369

Location --Water-stage recorder, lat. 32 0 43'30", long. 108°40'30", in W| sec. 23, T. 18 S 

K. IB W., 4 miles northeast of Red Rock and 14 miles downstream from Mangas Creek.

Drainage area.--2.860 square miles.

Becorda available. May 1908 to December 1914 (gage-height record only, mostly fragmentary 

-TEyTo-ncToBer 1908 January 1911 to July 1912) and October 1930 to September fiS in 7> 

h!P TQQI°{ Qeol°Sical Survey. November 1908 to December 1910 and August 1912 to December 1931 in reports of State engineer.

Average discharge.-38 years (1909-10, 1912-14, 1918-24, 1927-50), 182 second-feet.

Extremes.--Maximum discharge during year, 4,560 second-feet Sept. 24 (gage height, 10 50 

ieet); minimum daily, 9.2 second-feet June 22

fr.n 9??" 52 : ^xlmum discharge, 40,000 second-feet Sept. 29, 1941 (gage height, 31 feet, 

from floodmark) computed on basis of known flow for station below Blue Creek; minimum 

daily, 3 second-feet Aug. 2-7, 1947.

Remarks.--Records good. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 1950

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 

26 

29 

30 

31

Oct.

47 

56 

62 

55 

58

94 

81 

58 

53 

71

73 

65 

62 

69 

71

71 

79 

103 

85 

83

87 

83 

89 

83 

83

71 

71 

71 

63 

63 

67

Nov.

60 

63 

65 

69 

60

60 

67 

73 

75 

77

79 

81 

87 

87 

92

89 

92 

89 

85 

85

83 

73 

77 

79 

73

73 

69 

73 

71 

73

Dec.

83 

83 

87 

89 

89

83 

81 

83 

79 

92

105 

134 

131 

121 

112

107 

105 

98 

100 

100

96 

98 

96 

94 

92

89 

87 

87 

87 

85 

87

Jan.

89 

96 

103 

107 

107

105 

100 

100 

100 

96

96 

96 

98 

96 

96

94 

92 

92 

92 

92

92 

89 

89 

92 

89

89 

92 

92 

89 

89 

89

Feb..

89 

89 

87 

87 

85

85 

83 

81 

77 

79

79 

85 

85 

77 

75

79 

79 

79 

75 

75

71 

73 

73 

73

71

69 

87 

85

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

81 

100 

105 

109 

117

121 

117 

114 

114 

109

103 

96 

87 

85

81

71 

63 

56 

65 

63

55 

51 

50 

47 

55

73 

87 

81 

58 

55 

42

Apr.

50 

55 

62

51 

47

42 

55 

50 

50 

60

41 

55 

58 

50 

41

50 

51 

47 

47 

48

45 

40 

41 

53 

41

56 

56 

53 

41 

48

Secondroot-days

2,227 

2,279 

2,960

152.774X)

2,938 

2,232 

2,511 

1,484 

1,154 

545£ 

3,352 

3,111 

2,257

27,050.0!

May

37 

37 

35 

30 

56

62 

47

51 

53

44

47 

45 

40 

41 

45

35 

24 

24 

21 

21

31 

28 

24 

34 

40

35 

31 

34 

34 

31 

37

Maximum

103 

92 

134

12,200

107 

89 

121 

62 

62 

45 

468 

565 

586

586

June

38 

45 

34 

32 

23

19 

17

16 

17 

17

21 

15 

16 

19 

18

16 

15 

13 

18 

14

11 

9.2 

11 

16 

14

9.9 

9.9 

16

11 

14

July

Minimum

47 

60 

79

9.0

89 

69 

42 

40 

£1 

9.2 

11 

14 

18

9.2

12 

11 

12 

17 

15

20 

22 

40 

56

71

109 

81 

58 

55 

56

44 

41 

33 

25 

60

274 

145 

89 

92 

3O2

77 

73 

219 

452 

468 

323

Aug.

261 

248 

211 

361 

565

219 

154 

124 

96 

77

62 

53 

62 

6O 

48

71 

47 

28 

50 

47

41 

3O 

28 

25 

25

23 

23 

22 

19 

14 

17

Mean

71.8 

76.0 

95.5

419

94.8 

79.7 

81.0 

49.5 

37.2 

18.2 

1O8 

1OO 

75.2

74.1

Sept.

18 

81 

31 

23 

23

18 

21 

28 

48 

55

51 

38 

27 

25 

26

27 

22 

37 

100 

141

103 

85 

77 

586 

185

92 

85 

73 

62 

69

Runoff In 

acre-feet

4,420 

4,530 

5,870

303,000

5,630 

4,430 

4,980 

2,940 

2,29O 

1,080 

6,650 

6,170 

4,480

53,660

Peak discharge (base. 5.OOP sec.-ft.) . July 21 (6:15 p.m.) 3,O10 sec.-ft.; July 29 (7:45 p.m.) 

4,47O sec.-ft.; Sept. 24 (7 p.m.) 4,560 sec.-ft.
370 GILA RIVER BASIN

Gila River below Blue CreeK, near Virden, N. Mex.

Location.--Water-stage recorder, lat. 32°39', long. 108°51', in SEijSWtr sec. 18, T. 19 S., 

K. 19 W., at head of canyon, l£ miles downstream from Blue Creek, 10 miles east of 

Virden, and 16 miles upstream from State line. Datum of gage is 3,875 feet above mean 

sea level (from river-profile map).

Drainage area. 3,220 square miles, excluding Animas River Basin.

Records available.--May 1914 to September 1915, June 1927 to September 1950. January 

1923 to Way 1927 (discharge measurements only) and June 1927 to September 1931 computed as sum of flow at Virden Bridge, 8j miles downstream, and in Sunset Canal (see 

Water-Supply Paper 1049).

Average discharge.--23 years (1927-50), 175 second-feet.

Extremes.--Maximum discharge during year, 2,190 second-feet Sept. 24 (gage height, 8.05 

1'eet); minimum, 2.3 second-feet June 20.

1927-50: Maximum discharge, 41,700 second-feet Sept. 29, 1941 (gage height, 25.78 

feet); minimum, 1 second-foot July 14, 1934.

Remarks. Records good except those for periods of no recorder record, which are fair.

Some fluctuation at low flow caused by diversions above station for irrigation. Station 

is above all diversions for Duncan Valley.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

f64 

f61 

f57 

f54 

54

66 

69 

59 

50 

53

61 

61 

56 

57 

61

64 

65 

82 

79 

77

80 

79 

81 

81 

79

75 

70 

70 

66 

63 

66

Nov.

63 

63 

64 

65 

66

61 

64 

68 

71 

75

75 

77 

84 

84 

86

86 

86 

85 

84 

81

80 

74 

74 

74 

74

72 

71 

70 

70 

68

Dec.

74 

77 

77 

82 

85

85 

81 

82 

79 

92

102 

116 

121 

114 

109

104 

103 

100 

99 

97

96 

95 

95 

93 

92

90 

90 

90 

89 

88 

88

Jan.

90 

96 

100 

104 

108

106 

104 

100 

99 

99

97 

99 

100 

100 

100

100 

99 

97 

97 

97

97 

96 

96 

95 

92

93 

96 

96 

95 

95 

95

Feb.

95 

95 

93 

93 '92

90 

89 

88 

86 

85

84 

89 

89 

86 

82

82 

81 

84 

80 

77

72 

70 

69 

70 

69

68 

79 

79

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

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

St. .....................................

ter year 1949-50 ...............

Mar.

75 

84 

90 

92 

95

102 

104 

100 

103 

100

99 

99 

93 

88 

81

77 

71 

64 

63 

65

63 

57 

54 

51 

51

57 

76 

85 

71 

62 

54

Apr.

50 

51 

59 

53 

53

46 

47 

50 

44 

46

46 

46 

56 

54 

45

47 

53 

50 

44 

44

44 

42 

41

42

47

42 

48 

49 

37 

34

Secondfoot-days

2,060 

2,215 

2,885

152,698

3,038 

2,316 

2,426 

1,410 

865 

391.1 

3,311.8 

3,025.6 

2,381

26,324.5

May

35 

34 

31 

29 

30

40 

40 

36 

38

41

38 

40 

38 

35 

33

29

24 

21 

20 

20

18 

18 

20 

20 

20

18 

20 

19 

19 

20 

21

Maximum

82 

86 

121

10,400

108 

95 

104 

59 

41 

38 

586 

539 

450

586

June

24 

33 

38 

31 

27

21 

17 

15 

14

11

10 

9.6 

7.7 

6.4 

5.8

5.8 

5.8 

6.1 

5.2 

3.5

4.5 

14 

20 

13 

10

9.2 

7.3 

5.2 

5.8 

5.2

July

9.4

8.8 

5.8 

4.8 

39

20 

17 

17 

26 

40

58 

84 

63 

51 

47

42 

35 

29 

24 

33

125 

229 

175 

93 

310

120 

89 

97 

469 

586 

365

Minimum

50 

61 

74

12

90 

68 

51 

34 

18 

3.5 

4.8 

9.6 

13

3.5

Aug.

274 

241 

231 

300 

539

238 

167 

131 

f!03 

f82

f70 

f64 

f59 

f59 

f54

53 

45 

35 

30 

36

35 

30 

24 

22 

21

20 

18 

14 

11 

10 

9.6

Mean

66.5 

73.8 

93.1

418

98.0 

82.7 

78.3 

47.0 

27.9 

13.0 

107 

97.6 

79.4

72.1

Sept.

124 

68 

47 

29 

26

21 

18 

13 

14 

31

30 

28 

21 

17 

16

18 

31 

35 

76 

114

93 

81 

74 

227 

450

131 

120 

115 

112 

201

Runoff In 

acre-feet

4,090 

4,390 

5,720

302,900

6,030 

4,590 

4,810 

2,800 

1,720 

776 

6,570 

6,000 

4,720

52,220

Peak discharge (base, 1.900 sec.-ft.) . Sept. 24 (11 p.m.) 2,190 sec.-ft.

f Fragmentary gage-height record; discharge computed from gage-height graph based on fragments of 

record and normal recession.
GILA RIVER BASIN 371

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

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 one pump diverts 

water from Gila River for irrigation in the valley. The first four canals listed divert 

in New Mexico, with the Duncan Canal receiving water from the Moddle Canal, and the others 

divert in Arizona. The 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. The intake of 

York Canal at western end is about 14 miles upstream from station on Gila River near 

Clifton, Ariz.

Records of daily and monthly diversions are available for Sunset and Moddle Canals for 

1914-15 and 1922-31; for Cosper-Windham Canal (included with records for Sunset Canal 

since 1935) for 1914-15 and 1922-27; for Valley Canal for 1914-15 and 1923-31; for Duncan 

Canal for 1923-28; and for Black-McClesky and Colmenero Canals for 1923-31; monthly records for all of these canals have been republished in Water-Supply Paper 1049. Discharge 

measurements are available for York Canal for 1914-15 and 1923-31 and for Colmenero Canal 

for 1914-15. Also available are combined monthly diversions in Duncan Valley, and annual 

diversions by each canal for 1936-50.

Records of daily diversions since January 1936, except for Sunset and Moddle Canals for 

1939-50, have been collected by Gila Water Commissioner, appointed by U. S. District Court 

for Arizona. Records of diversions since January 1939 for Sunset and Moddle Canals are 

available in regular Water-Supply Papers. Water-stage recorders and Parshall flumes used 

to obtain records on the canals, and rated pumps used to obtain records of pumped water. 

See pages 386, 389 for records of Sunset and Moddle. Canals for 1950. Water obtained by 

pumping from ground water for irrigation in Duncan Valley is not included in these records.

The following tabulations of annual diversions by each canal and combined monthly diversions by canals as a group have been compiled by Gila Water Commissioner and the Geological Survey.

Annual diversions, in acre-feet, to each canal during water year 1949-50 

and calendar year 1949

Canal

Moddle

Valley

Duncan

Black & McCleskey. .....

Colmenero

R. Sexton ... ..

York.

Miscellaneous pumping...... 

Total....................

Water year 

1949-50

9,650 

2,990

2,540 

*344 

13 

143 

101 

0 

0 

0

1R.7RO

Calendar year 

1949

11,350 

6,290 

4,880 

*735 

649 

484 

430 

0 

0 

3

PA R?0

* All water received throrgh Moddle ^anal but no 1- included in that 

record.

Combined monthly discharge of canals diverting from Gila River in

Duncan valley, N. Mex.-Ariz., during water year

October 1949 to September 1950

Month

Calendar year 1949..

May...................

September. ............

Water year 1949-50..

Discharge in second-feet

Ma ximum

30

52 

55

116

5.6 

63 

30 

30 

30 

21 

76 

82 

32

82

Minimum

14 

20 

18

O

0

5.1 

6.6 

0 

14 

.6 

2.1 

7.4 

9.1

0

Mean

21.3 

30.9 

34.6

34.3

.8 

Z5.B 

19.5 

16.7 

21.9 

8.6 

32.3 

31.1 

18.0

21.8

Diversions in 

acre-feet

1,310 

1,840 

2,130

24,820

47 

1,430 

1,200 

992 

1,350 

512 

1,990 

1,910 

1,070

15,780

Note. Records furnished by Gila Vater Commissioner, except those 

for Sunset and Moddle Canals.
372 RIVER BASIN

Gila River near Clifton, Ariz.

Location.--Water-stage recorder, lat. 32°57'50", long. lOgnS'lS", in SW&3W£ sec. 30, T. 5 

S., K. 30 E., 1,100 feet upstream from bridge on former U. S. Highway 666, 6 miles up- ' 

stream from San Francisco River, and 7 miles south of Clifton. Datum of gage is 3,339^3 

feet above mean sea level, datum of 1929, unadjusted.

Drainage area. 4.040 square miles.

Records available. November 1910 to July 1918 (published as Gila River at Guthrie), March 

lyaa to uctocer 1933, May 1935 to June 1947, May 1948 to September 1950.

Average discharge. 24 years (1911-17, 1928-33, 1935-46, 1948-50), 239 second-feet.

Extremes. Maximum discharge during year, 1,680 second-feet July 30 (gage height, 4.80 feet 

leet); minimum, 11 second-feet June 21.

191&-18, 1928-50: Maximum discharge, 28,200 second-feet Sept. 29, 1941 (gage height, 

20.12 feet, site and datum then in use); minimum, 8 second-feet July 11, 1948.

Revisions., The figures of maximum discharge for water years 1929 and 1934 have been 

revised as shown in the following table. They supersede those published in the watersupply papers indicated:

Water -Supply 

Paper

789.........

Water 

year

1 QPQ

1934

Date

July 30

Aug. 26 t

Gage height 

(feet)

14 5

16.0

Discharge 

(second-feet)

13,200

17,000

t Date approximate.

Remarks. Records good except those for Aug. 10-14, which are fair. Diversions above 

sfaTion for irrigation. Station is below all Duncan Valley diversions.

Revisions (water years). W 1059: 1911, 1912, 1915, 1917.

Discharge, In second-feet, water year October 1949 to September 1950

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.

69 

57 

50 

50 

53

51 

52 

54 

52 

48

47 

50 

50 

47 

45

46 

160 

61 

63 

65

65 

65 

70 

63 

63

63 

61 

55 

52 

48 

44

Nov.

44 

46 

44 

42 

40

38 

39 

39 

38 

39

44 

48 

55

68 

72

72 

72 

72 

70 

68

65 

63 

61 

61 

61

59 

59

63 

63

61

Dec.

63 

63 

63 

65 

68

72 

70 

63 

63 

74

81 

93 

106 

114 

111

108 

100 

90 

93 

88

79 

74 

70 

68 

68

68 

68 

68 

65 

63 

61

Jan.

61 

88 

103 

106 

108

108 

108 

108 

108 

106

106 

106 

106 

106 

106

106 

106 

103 

103 

103

100 

100 

100 

98 

96

96 

93 

93 

96 

98 

98

Feb.

96 

93 

93 

93 

93

88 

83 

83 

83 

83

83 

79 

79 

83 

83

83 

81 

.72 

63

63

61 

53 

52 

50 

44

42

44 

50

Month

Goto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

ber. ....................................

lendar year 1949

h. ......................................

ter year 1949-50 .......................

Mar.

65 

70 

72 

79 

83

90

98 

90 

86

79 

76 

70 

70 

70

68 

61 

57 

50 

48

42 

42 

40 

39 

38

34 

39 

42 

50 

53 

48

Apr.

39

38 

34 

34 

34

33 

32 

30

27 

26

24 

24 

32 

33 

32

32 

30 

28 

28 

27

26 

24 

23 

23

24

23 

23 

23 

22 

22

Secondfoot-days

1,819 

1,666 

2,400

135,448

3,123 

2,053 

1,935 

850 

556 

447 

2,807 

2,349 

1,731

21,736

May

20 

20 

20 

20 

20

20 

20 

20 

20 

20

19 

19 

19 

19 

18

18 

17 

17 

17 

17

16 

16 

16 

16 

16

16 

16 

16 

16 

16 

16

Maximum

160 

72 

114

8,930

108 

96 

98 

39 

20 

17 

630 

518 

295

630

June

16 

16 

16 

16 

16

17 

17 

17 

16 

16

15 

15 

15 

15 

14

14 

14 

13 

12 

12

11 

13 

17 

17 

16

15 

14 

14 

14 

14

July

14

14 

14 

14 

14

63 

38 

20

16 

14

14 

12 

86 

123 

25

25 

110 

38 

30 

54

128 

106 

144 

180 

182

173 

96 

48 

85 

630 

297

Minimum

44 

38 

61

23

61 

42 

34 

22 

16 

11 

12 

18 

18

11

Aug.

223 

148 

137 

518 

304

215 

118 

68 

47 

a40

a34 

a34 

a29 

a29 

29

34 

32 

31 

28 

25

23 

22 

22 

22

21

21 

20 

20 

19 

18 

18

Mean

58.7 

55.5 

77.4

371

101 

73.3 

62.4 

28.3 

17.9 

14.9 

90.6 

75.8 

57.7

59.6

Sept.

18 

46 

34 

. 30 

23

23 

22 

20 

19

18

18 

18 

18 

18 

18

18 

32 

50

276 

49

65 

66 

62 

61 

295

152 

89 

70 

57 

46

Runoff In 

acre -feet

3,610 

3,300 

4,760

268,700

6,190 

4,070 

3,840 

1,690 

1,100 

887 

5,570 

4,660 

3,430

43,110

_Peak discharge (base, 2,500 sec.-ft.). Mo peak above base.

a No gage height record; discharge computed on basis of records for nearby stations.
GILA RIVER BASIN 373

Gila River near Solomon, Ariz. 

(Formerly published as Gila River near Solomonsville)

Location. Water-stage recorder, lat. 32°52', long. 109°31', in SE^NE^ sec. 31, T. 6 S., 

K. Zti E., 0.6 mile downstream from Intake of Brown Canal, 8 miles northeast of 

Solomon, and 13 miles downstream from San Francisco River. Datum of gage Is 3,065.09 

feet above mean sea level, datum of 1929.

Drainage area.--7,950 square miles.

Hecoras available.--April 1914 to September 1932, October 1940 to September 1950. February 1932 to October 1933 and May 1935 to September 1940 at site 3 miles upstream and 

above Intake of Brown Canal, published as Gila River below Bonita Creek, near Solomonsville. Prior to Oct. 1, 1949, published as Gila River near Solomonsville. Records of 

monthly discharge above Intake of Brown Canal diversion available June 1914 to September 1950, and prior to October 1938, published as Gila River at head of Safford 

Valley near Solomonsville In Water-Supply Paper 1049.

Average discharge (combined flow).--36 years (1914-50), 489 second-feet.

Extremes~]combined riow).--Maximum discharge during year, 1,240 second-feet July 30 (gage 

neight, 5.30 reetj; minimum, 27 second-feet June 21.

1914-50: Maximum discharge, about 100,000 second-feet Jan. 19, 1916, by slope-area 

method; minimum, 25 second-feet July 13, 1948.

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

409. ..'......

479..........

509..........

Water 

year

1914 

1915

1918

1919

Date

Aug. 21

July 1

Aug. 3

Gage height 

(feet)

4.15 

8.75

3

1

6.60

Discharge 

(second- feet)

t9,000 

50,000

2 7OO

15,000

t Not previously published.

Remarks.--Records good. Diversions above station for mining and municipal uses. No diversions above station for Irrigation in Safford Valley except Brown Canal. Combined 

discharge table on following page shows sum of discharge at this station and of Brown 

Canal and Is the amount of Water available at head of Safford Valley.

Cooperation.--Record for Brown Canal furnished by Gila Water Commissioner.

Kevlsions~Twater years).--W 1059: 1914, 1916-17, 1923(M), 1924-25, 1927, 1929(M), 1930(M), 

i9ai(M).Kevisea figures of discharge, In second-feet, for periods in water year 1915 

are given herewith. They supersede those published in previous water-supply papers.

Day

Jan. 29

Discharge

2,460

Day

Jan. 3O

Discharge

32,500

Day

Jan. 31

Discharge

21,000

Day

Feb. 1

Discharge

9,000

Month

Water year 1914-15 .............

Maximum

32,500

Minimum

80

Mean

3,802

2,196

Runoff in 

acre-feet

211,200

1,590,000

Day

1

2

3

4

5

6

7

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.

112

116

112

105

116

119

119

127

119

116

116

116

112

116

109

109

20O

204

168

152

152

152

152

156

149

152

152

141

130

130

127

Nov.

119

119

123

119

116

1O9

109

109

109

1O9

116

127

13O

137

149

149

149

152

152

152

152

149

149

148

145

141

141

141

145

141

-

Dec.

145

152

149

149

141

145

145

149

156

175

224

237

224

2O4

195

191

183

175

171

175

168

164

160

152

152

149

145

141

141

137

134

Jan.

137

149

179

179

179

179

175

175

179

179

179

179

183

191

191

191

187

187

187

187

183

183

179

179

179

179

175

175

171

171

171

Feb.

168

168

168

164

164

156

149

145

145

145

149

149

149

149

149

145

145

149

145

137

134

130

127

123

116

112

119

119

-

-

-

Mar.

134

145

152

164

168

168

160

164

168

156

152

149

145

145

141

141

137

134

127

119

112

112

112

109

116

119

123

123

123

127

119

Apr.

118

111

108

111

114

108

106

101

111

108

106

108

108

116

114

1O8

1O6

104

lol

97

92

88

79

79

75

75

73

71

70

71

-

May

71

73

73

71

71

75

73

71

66

62

62

60

58

57

54

54

52

50

47

50

54

54

55

57

58

58

57

55

54

50

52

June

50

54

54

50

44

43

46

44

43

41

39

38

35

36

38

38

38

38

32

31

30

39

50

55

50

43

38

35

35

35

-

July

35

35

35

36

36

50

124

75

60

101

108

111

136

222

111

83

156

121

154

221

226

192

306

233

394

370

259

37O

291

68O

673

Aug.

480

380

294

622

505

487

308

228

163

134

137

129

114

111

94

90

111

99

90

94

75

73

71

94

81

73

68

60

60

57

54

Sept.

50

47

102

68

64

79

86

99

66

60

57

55

52

49

47

47

50

96

322

167

116

132

111

104

213

353

182

140

116

99

~
374 GILA RMER BASIN

Monthly discharge, in second-feet, of Gila River near Solomon, Ariz., 

water year October 1949 to September 1950

Month

December. ..................................

Calendar year 1949 ......................

February

llaroh. .....................................

April ......................................

Bay. .......................................

September ..................................

Water year 1949-50 ......................

Secondfoot-days

4,156

4,007

5,128

284,661

3,229

47,692

Maximum

152

237

16,700

i eft

353

680

Minimum

109

134

60

30

47

30

Mean

134

134

165

780

97 9

CQ O

108

131

Runoff in 

acre-feet

8,240

7,950

10,170

564,600

6,400

94,590

Peak discharge (base. 4.000 see.-ft.). No peak above base.

Combined discharge, in second-feet, of Gila River and Brown Canal near Solomon, Arlz., 

water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

121

122

114

105

116

119

119

127

119

116

116

116

112

116

109

109

200

204

168

152

152

152

152

156

149

152

152

141

130

130

127

Nov.

119

119

123

119

116

109

109

109

109

109

116

127

130

137

149

149

149

152

152

152

154

152

149

149

145

141

141

141

147

144

-

Dec.

148

155

152

152

149

157

156

155

156

175

224

237

224

204

195

191

183

175

171

175

168

164

160

152

152

149

148

146

146

143

140

Jan.

137

149

179

179

179

179

175

175 '

179

179

179

179

183

191

191

191

187

187

187

187

183

183

179

179

179

179

175

175

171

171

171

Fab.

168

168

168

164

164

156

149

145

145

145

149

149

149

149

149

145

145

149

145

137

134

130

127

123

116

112

119

120

_

.

-

Month

December. ..................................

Calendar year 1949 ......................

April ......................................

May. .......................................

September ..................................

Water year 1949-50 ......................

Jter.

136

147

155

168

174

174

166

171

175

163

159

155

150

149

144

144

140

137

130

122

114

114

114

112

118

121

125

125

125

129

121

Apr.

120

113

110

113

116

110

108

103

113

110

107

109

108

116

114

108

106

104

101

97

92

88

79

79

75

75

73

71

70

71

-

Secondfoot-days

4,173

4,017

5,202

286,857

5,517

4,019

4,377

2,959

1,887

1,242

6,023

5,559

3,286

48,261

May

71

73

73

71

71

75

73

71

66

62

62

60

59

62

59

59

57

55

51

53

54

54

55

57

58

58

57

55

54

50

52

Maximum

204

154

237

16,700

191

168

175

120

75

55

694

637

358

694

June

50

54

54

50

44

43

46

44

43

41

39

38

35

36

38

38

38

38

32

31

30

39

50

55

50

43

38

35

35

35

-

Minimum

105

109

140

62

137

112

112

70

50

30

35

54

47

30

July

35

35

35

36

36

50

124

75

60

101

108

111

136

225

113

85

158

124

157

226

231

197

311

238

403

376

268

284

305

694

686

Aug.

493

393

307

637

519

501

321

239

169

137

139

131

116

113

94

90

111

99

90

94

75

73

71

94

81

73

68

60 ~- 60

57

54

Mean

135

134

168

786

178

144

141

96.6

60.9

41.4

194

179

110

132

Sept.

51

48

102

68

64

79

86

99

66

60

57

55

52

49

47

47

50

96

326

173

119

132

115

110

218

358

187

145

122

105

-

Runoff in 

acre feet

8,280

7,970

10,320

569,000

10,940

7,970

8,680

5,870

3,740

2,460

11,950

11,030

6,520

95,750
GILA RIVER BASIN 375

Diversions from Gila River in Safford Valley, Ariz.

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 the valley, is 0.6 

mile upstream from station on Gila River near Solomon. Intake of Colvin-Jones Canal, at 

lower end, is 25.8 miles upstream from station at Calva.

Records of monthly diversion for all canals except Fourness, Fort Thomas, and ColvinJones are available for 1914-15; records of daily and monthly diversions for all the 

canals except Colvin-Jones are available for 1920-31; records for Brown Canal are available also for water year 1931-32 (Tidwell Canal published as Michelana Canal in records for 

1914-15 and 1920-31). Records of combined monthly diversions in Safford Valley, and 

annual diversions by each canal are available for 1936-50.

Records of daily diversions since January 1936 have been collected by the Gila Water 

Coruaissioner, appointed by U. S. District Court for Arizona. Water-stage recorders with 

Parshall flumes or weirs are used by water commissioner to obtain records of diversion by 

canals, and rated pump is used to obtain record of pumped water. Water obtained by pumping from ground water for irrigation in Safford Valley is not included in these records.

The following tabulation of annual diversion by each canal and combined monthly diversion by canals as a group has been compiled and furnished by Gila Water Commissioner.

Annual diversions, in acre-feet, by each canal during water year 1949-50 

and calendar year 1949

Canal

Brown-. ............ ..... .

Curtis. ..................................

Total . .................................

Water year 

1949-50

39

75,740

Calendar year 

1949

591

237

167,800

Combined monthly discharge of canals diverting from the Gila River in 

Safford Valley, Ariz., during water year October 1949 to September 1950

Month

Calendar year 1949..

September. ............

Water year 1949-50..

Discharge in second-feet

Maximum

126 

132 

202

774

114 

149 

192 

142 

68.6 

54.9 

366 

375 

233

375

Minimum

73.4 

81.1

127

0

0 

10.0 

142 

70.6 

38.3 

24.3 

25.3 

50.3 

42.8

0

Mean

101 

107 

167

232

26.4 

77.4 

160 

103 

56.5 

34.0 

165 

154 

98.2

105

Diversions 

, in 

acre-feet

6,230 

6,370 

10,280

167,800

1,620 

4,300 

9,860 

6,140 

3,470 

2,030 

10,150 

9,450 

5,840

75,740

207364 O - 52 - 25
376 GILA RIVER BASIN

Gila River at Calva, Ariz.

Location.--Water-stage recorder, lat. 33°11'10", long. 110°13'10", in sec. 5, T. 3 S., 

K. ill E., unsurveyed, on San Carlos Indian Reservation, at railroad bridge at head of 

San Carlos Reservoir, ij miles northwest of Calva. Datum of gage is 2,514.77 feet 

above mean sea level, datum of 1929.

Drainage area.--11,490 square miles.

Records available.--March 1929 to September 1950.

Average discharge.--21 years, 281 secdnd-feet.

Extremes.--Maximum discharge during year, 3,210 second-feet July 30 (gage height, 5.30 

feet); no flow for many days June to September.

1929-50: Maximum discharge, 27,900 second-feet Oct. 1, 1941 (gage height, 11 82 

feet); no flow for short periods in most years.

Maximum discharge known, probably in excess of 100,000 second-feet occurred Jan. 20, 

1916, computed on basis of peak discharge at stations near Solomon and at Kelvin.

Remarks.--Records good except those for period of fragmentary gage-height record, which 

are poor. Diversion above station for irrigation, metallurgical treatment of ores, 

and municipal uses.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

15 

15 

14 

14 

15

13 

11 

11 

11 

10

10 

10 

10 

11 

11

10 

13 

14 

39 

54

55 

60 

55 

58 

61

64 

58 

58 

59 

52 

52

Nov.

59 

52 

49 

47 

42

34 

33 

32 

31 

31

33 

33 

34 

51 

58

52 

59 

63 

59 

52

50 

50 

48 

59 

61

64 

67 

61 

58 

55

Dec.

54 

47 

47 

54 

63

66 

56 

46 

41 

40

36 

56 

104 

109 

102

107 

91 

98 

102 

84

88 

78 

70 

55 

55

54 

55 

42 

38 

33 

33

Jan.

32 

32 

47 

104 

117

121 

126 

138 

141 

143

141 

143 

150 

148 

158

163 

163 

166 

163 

163

160 

163 

163 

166 

166

163 

166 

166 

168 

168 

166

Feb.

164 

163 

160 

155 

153

158 

166 

158 

143 

141

136 

130 

126 

121 

117

113 

107 

100 

94 

96

84 

76 

72 

68 

63

59 

55 

50

Month

Goto 

Move 

Deoe

Ca

Janu 

Febr 

Marc 

Apr! 

Ma v

June 

July 

Augu 

Sept

Wa

lendar year 194J

ter year 1949-50 .......................

Mar.

49 

49 

47 

43 

44

48 

52 

51 

44 

41

40 

39 

39 

35 

32

31 

30 

29 

23 

27

26 

25 

24 

24 

25

26 

27 

26 

26 

24 

21

Apr.

20 

20 

20 

20 

20

20 

20 

20 

19 

19

19 

19 

18 

18 

18

16 

15 

15 

15 

15

15 

14 

14 

14 

15

14 

14 

12 

11 

9.9

Secondfoot-days

943 

1,477 

2,004

207,364.2

4,374 

3,228 

1,072 

498.9 

207.4 

32.1 

2,852.5 

1,585 

607.3

18,881.2

May

9.5 

9.5 

9.5 

11 

11

10 

9.0 

8.2 

7.7 

7.2

6.8 

6.8 

6.8 

 6.8 

7.2

6.8 

6.8 

6.8 

6.4 

6.4

6.4 

5.9 

5.0 

5.0 

5.0

4.7 

4.2 

3.3 

3.0 

2.5 

2.2

Maximum

64 

67 

109

14 , 200

168 

166 

52 

20 

11 

13 

1,040 

766 

361

1,040

June

2.2 

1.9 

1.8 

1.6 

1.5

1.2 

.9 

.7 

.6 

.5

.3 

.2

.1 

.1 

0

0 

0 

0 

0 

0

0 

0 

13 

4.4 

.9

.2 

0 

0 

0 

0

Minimum

July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

332 

85 

71

3.5 

13 

61 

87 

114

115 

144 

38 

12 

737 

1,040

10 

31 

33

6.4

32

50 

21 

9.9 

2.2 

0 

0 

0 

0

0

Aug.

766 

212 

97 

33 

152

121 

105 

44 

14 

7.0

5.3 

4.5 

13 

5.4 

2.5

1.4 

.7 

.6 

.2 

.3

.1 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

30.4 

49.2 

64.6

568

141 

115 

34.6 

16.6 

6.69 

1.07 

92.0 

51.1 

20.2

51.7

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

f361 

47

39 

4.5 

2.2 

1.3 

1.3

1.2 

112 

28 

5.0 

4.8

Runoff In 

acre-feet

1,870 

2,930 

3,970

411,300

8,680 

6,400 

2,130 

990 

411 

64 

5,660 

3,140 

1,200

37,440

Peak discharge (base. 3.000 see.-ft.). July 30 (10:30 a.m.) 3,210 sec.-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage height.
GILA RIVER BASIN 377

San Carlos Reservoir at Coolidge Dam, Ariz.

Location. - -Water-stage recorder, lat. 33°10'30", long. 110°31>45", inNW^-see. 17, T. 3 S., 

K. 10 E., unsurveyed, at Coolidge Dam on Gila River. Datum of gage is at mean sea 

.level, datum of 1929.

Drainage area.--12,890 square miles.

Records available. November 1928 to September 1950.

Extremes.--Maximum contents during year, 109,000 acre-feet at 12:01 a.m. Oct. 1 (elevation, 

 2,426.91 feet); minimum, 120 acre-feet Sept. 16 (elevation, 2,382.81 feet).

1928-50: Maximum contents, 819,200 acre-feet Mar. 18, 1942 (elevation, 2,501.62

feet, datum of 1929); minimum (since appreciable storage was attained in 1929), no

storage part of each summer in 1939, 1946-48.

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-feet between 

elevations 2,382.63 feet (sill of lowest outlet gate) and 2,523.0 feet (top of automatic spillway gates in raised position) above mean sea level. Dead storage below 

elevation 2,382.63 feet, 3,834 acre-feet 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.

Usable contents at 12 p.m., in acre-feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

108,400

107,800

107,200

106,600

105,900

105,300

104,600

103,900

103,200

102,700

102,300

101,900

101,500

101,000

100,600

100,200

99,880

99,670

99 , 450

99,360

99,230

99,190

99,190

99,140

99,100

99,100

99 , 100

99,100

99,100

99,050

98,840

Nov.

98,790

98.710

98,620

98,450

98,230

98,060

97,880

97,710

97,450

97,280

97,060

96,850

96,630

96,460

96,250

96,080

95,950

95,780

95,650

95,530

95,400

95,360

95,270

95,230

95,230

95,190

95,140

95,140

95,100

95,060

-

Dec.

94,850

94,510

94,300

93,960

93,750

93,500

93,250

93,040

92,920

93,040

92,710

92,420

92,210

92,010

91,880

91,800

91,680

91,470

91,350

91,180

91,060

90,980

90,900

90,730

90,530

90,280

90,080

89,840

89,630

89 , 390

89,230

Jan.

89,110

89,030

88,790

88,710

88,670

88,620

88,670

88,750

88,830

88,910

88,950

89,110

89,230

89,350

89,430

89,510

89,630

89,840

90,000

90,280

90,530

90,730

91,020

91,220

91,430

91,630

91,840

92,090

92,420

92,590

92,750

Feb.

92,920

93,040

93,210

93,380

93,540

93,710

93,840

93,920

93,920

93,880

93,960

94,050

94,090

94,170

94,260

94,300

94,300

94,340

94,340

94,300

94,210

94,090

93,920

93,670

93,500

93,290

93,170

93,000

-

-

-

Mar.

92,790

92,790

92,630

92,420

92,210

91,880

91,680

91,390

90,980

90,570

90,160

89,590

. 89,190

88,580

87,980

87,390

86,640

85,810

84,910

83,980

83,060

82,060

81,120

80,140

79,210

78,210

77,250

76,330

75,460

74,590

73,620

Apr.

72,760

71,760

70,840

69,860

68,820

67,850

66,890

65,900

64,880

64,010

63,140

62,210

61,280

60,270

59,390

58,460

57,560

56,740

55,980

55,230

54,330

53,430

52,540

51,630

50,810

5O,09O

49,350

48,580

47,850

47,230

-

May

46,590

45,990

45,390

44,730

44, 280

43 , 860

43,460

43,040

42,790

42,490

42,240

42,050

41,830

41,630

41,440

41,220

40,870

40,540

40,240

39,980

39,680

39,300

38,930

38,610

38,220

37,850

37,510

37,060

36,670

36,230

35,850

June

35,390

34,950

34,450

33,990

33,520

32,950

32,260

31,670

31,070

30,470

29,820

29,240

28,630

28,010

27,390

26,750

26,120

25,480

24,840

24,230

23,560

23,300

22,730

22,120

21,480

20,880

20,260

19,670

19,060

18,520

-

July

17,940

17,300

16,710

16,090

15,500

14,970

14,730

14,760

14,730

14,580

14,050

13,530

13,000

12,500

11,990

11,460

10,970

11,160

11,360

11,490

11,600

11,850

11,880

11,960

12,160

12,310

12,330

11,980

11,520

12,810

14,040

Aug.

15,560

15,690

15, 450

14,940

14,760

14,480

14,150

13,720

13,280

12,740

12,270

11,900

11,390

10,870

10,350

9,820

9,220

8,580

7,890

7,230

6,540

5,860

5,180

4,500

3,830

3,140

2,470

1,900

1,470

1,010

705

Sept.

540

414

338

289

262

248

269

269

248

221

187

173

160

146

133

120

126

133

576

640

727

756

756

748

712

662

647

662

633

562

-

Monthly elevation and contents, water year October 1949 to September 1950

Date

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

Calendar year 1949.......

Mar. 31....................

Apr. 30. ...................

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

Water year 1949-50. ......

Elevation 

(feet)t

2.42Z.35

-

2,383.45

-

Contents 

(acre-feet)

89,230

-

562

-

Change in contents 

during month 

(acre-feet)

-5,830

+76,240

-143

-108,400

t Elevation at 12 p.m.
GILA RIVER BASIN

Gila River below Coolidge Dam, Ariz.

Location.--Water-stage recorder and Parshall flume, lat. 33°10'15", long. 110°31'45", in 

swi sec. 17, T. 3 S., R. 18 E., unsurveyed, 2,200 feet downstream from Coolidge Dam. 

Datum of gage is 2,309.33 feet above mean sea level, datum of 1929.

Drainage area.--12,£ square miles.

Records available. April 1914 to September 1950 (prior to October 1926, published as Gila 

Kiver near San Carlos). July 1899 to November 1905 at site 8 miles upstream, below 

mouth of San Carlos River. August 1910 to February 1911 at site 10 miles upstream 

above mouth of San Carlos River.

Average discharge.--38 years (1901, 1904, 1914-50), 407 second-feet 

in Ban uarios reservoir).

(adjusted for storage

Extremes. Maximum discharge during year, 726 second-feet Apr. 30 (head on flume, 3.15 

reet); minimum, 6.0 second-feet Sept. 24.

1914-50: Maximum discharge, 130,000 second-feet Jan. 20, 1916, computed on basis of 

peak discharge near Solomon and at Kelvin; no flow for several periods.

Maximum discharge since completion of Coolidge Dam, 1,240 second-feet July 31, 1937 

(head on flume, 4.35 feet); no flow at Coolidge Dam at times in most years when gates 

in dam were closed.

Remarks.--Records excellent. Crest width of Parshall flume, 30 feet. Large diversions 

above San Carlos Reservoir for irrigation, metallurgical treatment of ore, and municipal 

supply. 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 

ard which amounted to 0.44 second-foot by measurement on Feb. 1.

Revisions (water years).--W 1049:

1922 (M), 1923, 0.924 (M) .

1899-1904. W 629: 1915, 1916. W 1149: 1917(M), 1921,

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

308 

311 

304 

308 

308

305 

292 

274 

274 

234

211 

211 

211 

211 

208

208 

170 

123 

96 

55

55 

55 

54 

54 

52

52 

52 

51 

51 

50 

48

Nov.

51 

66 

88 

123

118

113 

113 

115 

117 

117

117 

117 

117 

117 

154

115 

121 

124 

124 

124

108 

57 

70

76

74

74 

74 

74 

74 

100

Dec.

154 

223 

182 

182 

182

182 

182 

182 

176 

129

182 

179 

177 

177 

182

179 

179 

179 

179 

179

175 

121 

121 

150 

179

179 

179 

179 

182 

179 

123

Jan.

123 

123 

123 

124 

124

124 

124 

126 

126 

126

128 

130 

132 

132

134

134 

138 

114 

61 

63

57 

57 

55 

55 

55

55 

64 

72 

74

76

76

Feb.

77 

77 

77 

77 

77

92 

115 

123 

158 

182

144 

63 

102 

102 

102

102 

102 

102 

108 

126

132 

132 

166 

182 

184

195 

199 

186

Month

Octo 

Move 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Ma

lendar year 1949

ter year 1949-5O .......................

Mar.

173 

173 

173 

173 

173

179 

193 

217 

260 

259

256 

244 

279 

318 

318

332 

373 

426 

476 

479

479 

501 

508 

518 

518

518 

508 

495 

498 

498 

501

Apr.

511 

531 

498 

518 

518

518 

518 

518 

518 

511

495 

495 

495 

495 

495

495 

476 

438 

438 

423

454 

454 

450 

450 

426

370 

370 

370 

370 

315

Secondfoot-days

5,196 

3,032 

5,333

139,517.0

3,105 

3,484 

11,016 

13,933 

5,586 

9,007 

5,547 

9,120 

685.5

75,044.5

May

332 

300 

300 

282 

252

222 

197 

185 

148 

148

124 

104 

106 

108 

108

119 

146 

148 

148 

148

146 

150 

158 

173 

182

182 

184 

184

197 

202

, 203

Maximum

311 

154 

223

947

138 

199 

518 

531 

332 

321 

332 

354 

99

531

June

204 

218 

244 

242 

242

282 

316 

316 

316 

316

316 

318 

318 

318 

318

318 

321 

318 

318 

318

318 

311 

316 

316 

313

313 

313 

311 

311 

308

July

308 

308 

324 

332 

329

310 

143 

15 

14 

86

295 

295 

295 

292 

292

292 

276 

185 

17 

176

19 

18 

16 

16 

17

17 

168 

254 

274 

145 

19

Minimum

48

51 

121

.8

55 

63 

173 

315 

104 

204 

14 

18 

6.0

6.0

Aug.

18 

185 

298 

295 

269

300 

300 

298 

303 

300

298 

300 

295 

292 

300

300 

324 

354 

354 

354

354 

350 

351 

354 

354

354 

345 

306 

223 

233 

159

Mean

168 

101 

172

382

100 

124 

355 

464 

180 

300 

179 

294 

22.9

206

Sept.

99 

64 

46 

33 

27

23 

24 

26 

20 

16

13 

11 

10 

8.8 

8.8

8.8 

8.8 

8.8 

16 

7.3

7.3 

7.3 

6.6 

6.0

21

27 

32 

33 

33 

33

Runoff in 

acre-feet

10,310 

6,010 

10,580

276,700

6,160 

6,910 

21,850 

27,640 

11,080 

17,870 

11,000 

18,090 

1,360

148,800
GIIA RIVER BASIN 379

Olla River at Winkelman, Ariz.

Location.--Water-stage recorder, lat. 33°00'10", long. 110°45'55", in NWirNE^ sec. 13, T. 

5 £>., R. 15 E. , lj miles north of Winkelman, 2 miles upstream from San Pedro River, 

and 29 miles downstream from Coolidge Dam. Datum of gage is 1,920.95 feet above mean 

sea level, datum of 1929, supplementary adjustment of 1949.

Drainage area. 13,280 square miles, of which 390 square miles is below Coolidge Dam.

Records available. September 1941 to September 1950. September 1917 to June 1918 (prior 

to closing_ol' Coolidge Dam) and December 1928 to February 1935 (discharge measurements 

only) at site 1.5 miles downstream.

Extremes.--Maximum discharge during year, 5,210 second-feet July 30 (gage height, 7.90 

reetj; minimum, 8.0 second-feet Sept. 26.

1941-50: Maximum discharge, 55,000 second-feet Aug. 9, 1944 (gage height, 18.40 

feet), by slope-area method; no flow parts of June, July, and August 1947.

Remarks.--Records good except those below 10 second-feet and those for periods of fragmentary gage-height record, which are fair. Large diversions above station for irrigation but none between Coolidge Dam and this station. Flow regulated by San Carlos 

Reservoir (see p. 377).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

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

Oct.

288 

292 

292 

313 

292

292 

288 

264 

257 

254

205 

199 

199 

199 

199

199 

202 

141 

121 

91

65 

61 

57 

57 

54

54 

53 

53 

51 

51 

48

Nov.

47 

48 

61 

92 

106

104

104 

106 

110 

112

123 

119 

119 

123 

137

144

119 

127 

127 

127

127 

92 

62 

76 

76

76 

74 

74 

74 

72

Dec.

114

172 

194 

175 

177

177 

177 

177 

180 

163

188 

177 

177 

175 

172

175 

175 

175 

177 

183

183 

154 

125 

125 

167

172 

172 

170 

170 

167 

140

Jan.

114 

117 

117 

117 

115

115 

110 

108 

110 

108

106

108 

117 

112 

112

112 

114 

117 

81 

53

59 

64 

65

65 

65

67 

67 

78 

81 

83 

80

Feb.

80 

81 

81 

81 

83

83 

108 

119 

125 

160

172 

94 

72 

94 

96

96 

93 

98 

100 

112

185 

129 

134 

170 

170

175 

194 

168

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194£

ter year 1949-50 .......................

Mar.

170 

177 

167 

167 

164

164 

177 

186 

234 

250

250 

241 

234 

288 

303

299 

314 

322 

459 

464

464 

464 

488 

493 

498

493 

493 

479 

469 

474 

464

Apr.

464 

488 

479 

469 

498

503 

503 

508 

513 

513

498 

493 

493 

498 

493

493 

493 

436 

418 

405

459 

469 

474 

474

479

382 

374 

370 

370 

303

Seeondfoot-days

5,191 

2,958 

5,225

138,763.8

2,937 

3,318 

10,309 

13,812 

5,332 

8,425 

7,588 

8,539 

816.8

74,450.8

May

352 

281 

278 

281 

247

234

183 

180 

150 

140

138 

112 

104 

106 

104

106 

127 

136 

138 

138

140 

138 

145 

150 

167

170 

167 

170 

172 

189 

189

Maximum

313

144 

194

975

f 117 

194 

496 

513 

352 

399 

1,130 

345 

123

1,130

June

191 

191 

222

228 

225

2S8 

29$ 

306 

'299 303 

295 

Z92 

295 

295 

295

295 

292 

'292 

292 

292

295 

399 

292 

288 

288,

£84 

284 

288 

288 

292

July

292 

292 

295 

329 

329

453

411 

119 

42 

34

165 

267 

281 

288 

288

288 

326 

329 

107 

44

f582 

f212 

31 

37 

26

23 

22 

203 

228i 

1,130J 

119

Minimum

48 

47 

114

7.2

53 

72 

164 

303 

104 

191 

22 

31 

8-. 4

8.4

Aug.

39 

31 

258 

278 

345

274 

274 

270 

270 

267

281 

274 

274 

274 

274

281 

281 

325 

329 

329

329 

322 

329 

333 

337

337 

341 

337 

247 

216 

183

Mean

167 

98.6 

169

380

94.7 

118 

 333 

460 

172 

281 

245 

275 

27.2

204

Sept.

123 

81 

59 

42 

33

28 

26 

22 

22 

21

18 

15 

14 

12 

12

10 

82 

22 

12

11

12 

9.6 

9.2 

8.8 

8.4

8.8 

18 

22 

29 

26

Runoff In 

acre-feet

10,300 

5,870 

10,360

275,200

5,830 

6,580 

20,450 

27,400 

10,580 

16,710 

15,050 

16,940 

1,620

147,700

Peak discharge (base, 1,900 sec. -ft.) -"July 21 (9 p.m.) 3.600 sec. -ft. i July 30 (11:30 a.m.)

5,210 sec.-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN

Gila River at Kelvin, Ariz.

Location.--Water-stage recorder, lat. 33°06'15", long. 110°58'45", in NW^NW^ sec. 12, T. 

4 s., R. 13 E., at Kelvin, 1,000 feet downstream from Mineral Creek, 17 miles downstream from San Pedro River, and 19^ miles upstream from Ashurst-Hayden Dam. Datum of 

gage is 1,743.22 feet above mean sea level, datum of 1929, supplemental adjustment of 

1949.

Drainage area. 18,000 square miles, of which 5,140 square miles is below Coolidge Dam. 

Records available.--January 1911 to September 1950.

Average discharge.--39 years (1911-50), 545 second-feet (adjusted for storage in San 

Carios Reservoir).

Extremes.--Maximum discharge during year, 6,920 second-feet July 30 (gage height, 7.91 

feet); minimum daily, 8 second-feet Sept. 25-27.

1911-50: Maximum discharge, about 132,000 second-feet Jan. 20, 1916 (gage height, 

19.5 feet), from rating curve extended above slope-area measurement at 82,000 secondfeet; minimum, less than 1 second-foot in summers of several years.

Maximum discharge since completion of Coolidge Dam, 42,800 second-feet Aug. 8, 1930 

(gage height, 12.6 feet); minimum, 0.3 second-foot Aug. 4-6, 1947.

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

which are fair. Large diversions above station for irrigation, of which more than 90 

percent are above Coolidge Dam. Plow regulated by San Carios Reservoir (Coolidge Dam) 

since Nov. 15, 1928 (see p. 377); no other regulation.

Revisions (water yearsJ.--W 329: 1911. W 609: 

1915, 1917(MJ, 1921(M), 1922, 1923, 1927(M).

1916(M). W 629: 1914-17. W 1119: 1913,

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

281 

291 

297 

312 

381

337 

325 

302 

281 

270

229 

197 

192 

197 

197

201 

215 

188 

136 

120

f80 

72 

68 

66 

62

61 

61 

61 

59 

59 

57

Nov.

57 

57 

62 

80

106

116 

116 

116 

116 

125

139 

132 

128 

128 

128

162 

128 

128 

128 

128

128 

122 

82 

72 

80

77 

74 

74 

74 

77

Dec.

92 

139 

210 

184 

184

188 

184 

179 

188

217

201 

201 

197 

197 

201

197 

201

197 

197 

215

210 

201 

155 

147 

158

192 

201 

201 

201 

201 

197

Jan.

147 

136 

136 

128 

128

125 

128 

132 

136 

128

132 

128 

136 

132 

125

125 

128 

136 

128 

84

80 

80 

80 

77 

72

70 

70 

72 

82 

94 

94

Feb.

94 

94 

92 

92 

94

92 

94 

114 

122 

145

189 

196 

102 

122 

120

120 

120 

120 

120 

120

131 

134 

131 

152 

171

174 

200 

204

Month

Ooto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 194£

ember. ..................................

ter year 1949-50 .......................

Peak discharge (base, 4,000 sec. -ft.). Ji.

6,920 sec. -ft. 

a Ho gage-height record; discharge compute 

Ashurst-Hayden Dam. 

f Fragmentary gage-height record; discharg

Mar.

192 

196 

185 

181 

178

178 

178 

189 

215 

258

267 

262 

253 

286 

321

326 

342 

369 

428 

453

466 

472 

493 

493 

506

506 

506 

493 

486 

486 

486

Apr.

493 

513 

506 

486 

513

520 

520 

527 

527 

520

513 

506 

500 

506 

506

506 

506 

472 

447 

434

447 

466 

466 

466 

466

434 

398 

386 

375 

369

Secondfoot-days

5,655 

3,140 

5,833

159,787

3,449 

3,659 

10,650 

14,294 

5,297 

8,317 

20,668 

10,273 

979

92,214

May

312

310 

286 

286 

258

240 

211 

185 

171 

152

148 

136 

122 

117 

117

114 

117 

128 

131 

131

131 

128 

131 

134 

145

152 

152 

158 

155 

168 

171

Maximum

381 

162 

217

3,220

147 

204 

506 

527 

312 

493 

2,800 

1,170 

134

2,800

June

171 

171 

181 

192 

192

196 

232 

258 

262 

267

267 

272 

272 

276 

272

272 

272 

276 

272 

272

272 

440 

443 

493 

342

310 

310 

300 

286 

276

July

272 

267 

262 

286 

291

381 

770 

803 

f316 

f255

f205 

276 

272 

276 

299

291 

442 

1,060 

293 

237

1,510 

2,360 

662 

847 

f592

520 

415 

352 

326 

2,730 

2,800

Aug.

1,170 

320 

268 

305 

438

326 

295 

295 

286 

281

458 

380 

342 

300 

281

272 

267 

291 

305 

295

305 

305 

300 

305 

326

321 

305 

305 

253 

192 

181

Minimum Mean

57 182 

57 105 

92 188

32 438

70 111 

92 131 

178 344 

369 476 

114 171 

171 277 

205 667 

181 331 

8 32.6

8 253

Sept.

134 

97 

76 

60 

49

38 

32 

31 

f25 

fZl

f!8 

14 

12

12 

all

alO 

22 

112 

45 

27

18 

15 

11 

10 

8

8 

8 

15 

19 

21

Runoff in 

acre-feet

11,220 

6,230 

11,570

316,900

6,840 

7,260 

21,120 

28,350 

10,510 

16,500 

40,990 

20,380 

1,940

182,900

ly 21 (12 p.m.) 4,330 sec. -ft.; July 30 (7:30 p.m.) 

d on basis of records for stations at Winkelman and at 

e computed from partly estimated gage heights.
GILA RIVER BASIN 381

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

Location. Water-stage recorder, lat. 33°06'00", long. 111°14'50", In SW^NW^ sec. 8, T. 4 

STTR. 11 E., at Ashurst-Hayden Dam, 9 miles northeast of Florence. Permanent crest of 

dam Is 1,563.6 feet above mean sea level, datum of 1929. Crest height 1.7 foot higher 

during the year by use of flashboards. Florence-Casa Grande Canal diverts at left end 

of dam for Irrigation of lands under San Carlos project.

Drainage area. 18,300 square miles.

Records available. July 1923 to September 1950 (head on crest of dam only). Records of 

monthly diversions to Florence-Casa Grande Canal available January 1928 to September

Extremes. Maximum head on dam during year, 2.13 feet July 30; no flow over dam greater 

part of year.

1923-50: Maximum head on dam, 8.0 feet Sept. 28, 1926; no flow over dam greater part 

of each year.

Remarks. Records show dally mean head 'on dam and monthly diversions to Plorence-Casa 

Grande Canal. Mean head is often not representative of flow passing dam because of 

extensive sluicing. -Diversion records are those at canal gaging station (water-stage 

recorder and Parshall flume) 2.6 miles downstream at China Wash adjusted for Intervening sluicing and pumping (but not natural losses), to show water available at dam, 

except for water passed over dam or sluiced through dam during times of flood runoff. 

Many diversions above station for irrigation. Plow regulated at Coolidge Dam except 

for periods of tributary Inflow below that dam. San Pedro River contributes major 

portion of unregulated inflow.

Cooperation.--Records collected and prepared in cooperation with Office of Indian Affairs.

Daily mean head, in feet, water year October 1949 to September 1950

Oay

1

2

3

4

5

6

7

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.

0

0

0

.01

.03

0

0

0

0

0

0

0

.01

0

o

0

.01

0

0

0

0

o

0

0

0

0

0

0

0

0

0

Nov.

o

0

0

o

0

o

0

0

0

.03

0

0 *0

0

0

.08

0

0

0

0

0

0

0

0

a

0

0

0

0

o

-

Dec.

0

0

.02

0

0

w(t)

0

.01 (t)

.01

.04

w(t-)

0

0

0

0

0

.01

0 (t) (t)

0

0

.04

w(t)

0

0

.03

Jan. Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 (t)

.02

.03

.02

.03

_

-

Mar.

0

(t)

.01

0

0

o

0 (t)

0

.03

0

0

0 (t) .03

.01

0

.01

0

(t)

(t)

0

0

0

(t)

0

0 (t)0

(t)

0

Apr.

0

0

0

(t)0

0

0 (t)0 (t)

(t)

0 (t)

.01

.01

0

0

0

0

0

(t)

0

o

0

0

0

0

0 (t)0

Hay

o

0 J f l (t)

0

0

0

0

(t)

o

(t) .01

(t)

0

0

0

0

M(t)

0

0

0

0

o

0

(t)

0

0

0

0

0

June

0

0

0

(t)

0

0

0 (t)

0

0

0

0

0

0

0

0

(t)0

0

0

0

.01

.01

.08

0

0

0

0 (t) .02

July

0

O

o

0

o

.01

.13

.19

0

.01

0

(t)

0

0

o

0

0

.35

0

O

.02

.72

.16

.16

.01

.02

(t)

(t)

0

.46

.52

Aug.

0.17

.01

(t)

0

.02

(t)

0

0

0

0

.05

.02

.01

.03

O

0

0

0

o

0

0

0

0

0

(t)

.01

0

0

(t)

0

(t)

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0 (t)

0

0

0

0

0

0

0

o

0

0

0

0

-

t Flow over crest of dam for short time, but mean head for day was less than 0.01 foot. 

Note. Water below crest during months left blank and on days shown by zero.

Monthly diversions to Florence-Casa Grande Canal 

water year October 1949 to September 1950

Month

Calendar year 1949...

March..... .............

Water year 1949-50...

Secondfoot-days

4,732 

2,291 

4,784

132,521

2,932 

3,985 

9,518 

12,222 

4,169 

6,890 

11,054 

8,717 

611.4

7O,905.4

Discharge in second-feet

Maximum

296 

102 

193

1,050

145 

193 

476 

462 

274 

470 

1,030 

538 

146

1,030

Minimum

38 

37

57

37

55

156 

307 

76 

131 

0 

180 

0

0

Mean

153 

76.4 

154

363

94.6 

107 

307 

407 

134 

230 

357 

281 

20.4

194

Runoff in 

acre-feet

9,390 

4,540 

9,490

262,800

5,820 

5,930 

18,880 

24,340 

8,270 

13,670 

21,930 

17,290 

1,310

140,600

Water sluiced 

above flume 

(acre-feet)*

105 

54 

97 -

3,100

66 

78 

138 

122 

69 

81 

751 360 ' 

5.6

1,830

* Included in first four columns of table.
382 GILA RIVER BASIN 

Gila River near Laveen, Ariz.

Location. Water-stage recorder above concrete diversion dam, lat. 33°15', long. 112°10', 

in SWvNW^ sec. 16, T. 2 S,, R. 2 E., on Gila River Indian Reservation, at highway bridge 

l-g miles south of Komatke, 8 miles south of Laveen, and 8 miles upstream from Santa Cruz 

River. Datum of gage is 1,018.90 feet above mean sea level, datum of 1929, PhoenixPicacho supplementary adjustment of 1949. Auxiliary water-stage recorder on overflow 

channel located a quarter of a mile south at datum 0.23 foot lower.

Drainage area.--20,200 square miles,

Kecoras available. January 1940 to September 1946, December 1947 to September 1950.

extremes. Maximum discharge during year, 1,500 second-feet A,ug. 2 (gage height, 7.22 

feet); no flow several times during summer.

1940-46, 1947-50: Maximum discharge, 11,900 second-feet Jan. 2, 1941 (gage height, 

9.33 feet); no flow at times during summers of several years.

Remarks. Records fair except those for period of fragmentary or 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 July 23, 24, 31, Aug. 1, 2, 6, 7 (total 

runoff, 592 acre-feet), Large diversions above station for irrigation. Flow partly 

regulated by storage in San Carlos Reservoir (see p. 377).

Discharge measurements of Cooperative Canal 1949-50

Date

1949

Oct. 6

31

Nov. 22

. 30

Dec. 9

20

1950

Jan. 4

12

Discharge 

(second-feet)

8.66

2.87

0

1

.99

2.41

6.75

10.1

Date

r 1950

Jan. 24

Fet. 14

21

Mar. 6

28

Apr. 18

May 9

29

June 19

Discharge 

(second-feet)

5.56

4.25

.1

10.8

9.85

7.02

.1

5.46

3.. 79

Date

1950

June 28

July 7

8

19

20

22

27

28

Aug. 1

Discharge 

(second-feet)

1.55

4.68

15.8

0

0

7.45

10.5

10.9

18.8

Date

1950

Aug. 3

3

4

7

9

14

Sept. 7

29

Discharge 

(second-feet)

0

4

2.20

24.0

13.2

3.45

4.45

2.46

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1 

1 

1 

1 

1

1 

1

1 

1 

1

1

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

2 

2

2 

2 

2 

2 

3 

5

Hov.

8 

9 

9 

9 

9

9 

9 

9 

9 

9

10 

10 

10 

10 

10

10 

10 

10 

10 

10

Dec.

9 

8 

8 

9 

9

9 

9 

9 

10 

9

9 

9 

9 

10 

10

10 

10 

10 

10 

10

10 

10 

11 

12 

12

12 

12 

12 

13 

12 

13

Jan.

12 

10 

6 

4 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.6 

.6

' .6 

.6 

4 

6 

6

7 

7 

7 

7 

7 

8

Feb.

a 

a

8

a

8 

8

a

9

a

9

9 

9 

9 

9 

9

6

1 

2

a

10

11

6

11 

.4

.4

.6 

.5 

.5

Month

October. ....................................

Hove 

Dece

Ca

Janu 

Febr 

Hare 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

1.... ...................................

ter year 1949-50 ..........,,.,,,,......

Peak discharge (base, 700 sec, -ft.) .--Juli

ft.; July 23 (7:30 p.m.) 1,040 see, -ft. J Aug 

ft.

Mar.

0.6 

.6 

.3 

.3 

.4

.4 

.5 

.5 

.6 

.9

1 

1 

3 

5 

6

6 

6 

7 

8 

6

2 

.2 

.4 

.4 

.4

.4 

.4 

.4 

.4 

.3 

.3

Apr.

0.3 

.3 

.3 

.2 

.2

.2 

.2 

.3 

.3 

.5

.5 

.5 

.5 

.5 

.5

.6 

.6 

.7 

.8 

.4

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot-days

43

261 

315

7,887.8

100.4 

178.4 

59.7 

8.4 

86.2 

28.3 

2,724.4 

2,714.5 

63.6

6,582.9

9 (7 a.m.) 

. Z (6 a.m.)

May

0 

0 

0 

0 

0

0 

3

7 

7 

7

8 

8

a

8 

8

8 

8 

6

.1 

0

.1 

0 

0 

0 

0

0 

0 

0

o

0 

0

Maximum

5 

10 

13

779

12 

11 

8 

.8 

8 

3 

797 

1,120 

3

1,120

June

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

.3

1 

1

1

1 

1 

1

1

1 

2 

2 

2 

2

2 

2 

3 

a3 

a2

July

al 

al 

a. 5 

a. 5 

a. 2

a. 2 

.2 

5 

420 

66

a!5 

alO 

a5 

a3 

a2

a2 

al 

al 

415 

43

f2 

266 

797 

f65 

fl

f .8 

2 

4 

2 

2 

591

Aug.

1,120 

715 

23 

12 

55

731 

f30 

fl 

.9 

.9

- 1 ! 

.7 

2 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Sept.

0 

0 

0 

0 

.6

1 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

3 

3 

3 

3

3 

3 

3 

3 

3

3 

3 

3 

3 

3

Minimum Mean ^fee?

I 1.4 85 

7 8.7 518 

8 10.2 625

.1 21.6 15,650

.5 3.24 199 

.4 6.37 354 

.2 1.93 118 

0 .28 17 

0 2.78 171 

0 .94 56 

.2 87.9 5,400 

0 87.6 5,380 

0 2.12 126

0 18.0 13,050

706 sec. -ft.; July 19 (1:30 p.m.) 777 sec.- 

1,500 sec. -ft.; Aug. 6 (4 p.m.) 1,160 sec.-

a Ho gage-height record; discharge computed on basis of adjoining good record and normal recession, 

f Fragmentary gage-height recordj discharge computed from partly estimated gage heights.
GILA RIVER BASIN 383

Gila River below Gillespie Dam, Ariz.

Location. Water-stage recorder above left end of Gillespie Dam, lat. 33°13'45", long. 

112" 45 "30", in SEijNEv sec. 28, T. 2 S., R. 5W., 8 miles downstream from Hassayampa 

River. Average elevation of crest of dam is 753.46 feet above mean sea level, datum 

of 1929, and 5 feet above datum of gage. Qillespie Canal diverts from left bank and 

Enterprise Canal diverts from right bank at Gillespie Dam.

Drainage area.--49,600 square miles.

Kecoras available. August 1921 to September 1950 (river only). Records for Qillespie 

uanai May 1935 to September 1950; for Enterprise Canal June 1935 to September 1939 

(discharge measurements only) and October 1939 to September 1950.

Extremes. Maximum discharge during year, 1,460 second-feet Oct. 19 (height over crest of 

dam, 0.56 foot); no flow most of year.

1921-50: Maximum discharge observed, 70,000 second-feet Dec. 28, 1923 (height over 

crest of dam, 6.0 feet), by computation of flow over dam; no flow for extended periods 

each year.

Maximum discharge known, 250,000 second-feet (estimated) in February 1891.

Remarks. River records good. Records include flow over crest and through sluice gates of 

OTTTespie Dam (none this year) but do not include flow in Gillespie and Enterprise 

Canals which divert from river immediately above dam. Other diversions above station 

for irrigation. Flow of Qila River and tributaries above this station is regulated by 

San Carlos Reservoir on Gila River (capacity, 1,205,000 acre-feet); by a series of 

reservoirs on Salt River (capacity, 1,755,000 acre-feet); by Bartlett and Horseshoe 

Reservoirs on Verde River (capacity, 323,500 acre-feet); and by Lake Pleasant on Agua 

Fria River (capacity, 163,800 acre-feet).

For records of combined flow of Qila River, Qillespie Canal, and Enterprise Canal, 

and for monthly records of Qillespie Canal and Enterprise Canal, see tables on following page. Records of diversion by Qillespie Canal obtained through use of water-stage 

recorder in SW^NE^ sec. 28, T. 2 S., R. 5 W., 200 feet downstream from head gates. 

Records of diversion by Enterprise Canal obtained through use of water-stage recorder 

in SWirNEir sec. 28, T. 2 S., R. 5 W., 600 feet downstream from intake.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

O 

0 

O 

O 

O

0 

O 

0 

0 

O

O 

O 

0

0 

0

o

0 

0 

655 

4

O 

O 

0 

0 

O

0 

O 

0 

O 

0 

0

Nov. Dec. Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr! 

May. 

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar. Apr.

Secondfoot-days

659 

0 

0

5,981

O 

0 

O 

0

0 

0 

338 

1,079 

0

2,O76

May

Maximum

655 

0 

O

665

O 

O 

0 

O 

0 

O 

265 

38O 

O

655

June July

0 

0 

O 

0 

0

0 - o 

o

0 

0

11

12 

4 

0 

0

O 

0

o

0

o

o 

o

0 

44 

265

2 

O 

O 

0 

0 

0

Minimum

O 

O 

O

0

0 

O 

O 

0 

0

o 

o

0 

0

o

Aug.

O 

178 

380 

99

62

0 

203

157 

0 

O

O 

0 

0 

0

o

o 

o

0 

0

0

0

o

0 

0

o

0

0

o

0 

0 

0

Mean

21.3 

O 

0

16.4

0 

0 

O 

0 

0

o

10.9 

34.8 

0

5.7

Sept.

Runoff in 

acre-feet

1,310 

0 

0

11,870

O 

0 

0 

O 

0 

O 

67O 

2,140 

O

4,120

Peak discharge (base. 1,000 sec.-ft.).--Oct. 19 (4 p.m.) 1,460 sec.-ft.

Note. Record shows flow over dam and through sluice gates in dam. No flow during months left
384 GILA RIVER BASIN

Combined discharge, In second-feet, of Glla River below Glllesple Dam and of Glllesple and 

Enterprise Canals at Glllesple Dam, Arlz., water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

41 

36 

36 

37 

36

36 

35 

35 

44 

36

34 

32 

32 

32 

33

32

31 

46 

816

133

59 

31 

33 

33 

32

32 

32 

32 

32 

32 

32

Nov.

34 

33 

33 

34 

34

34 

35 

37 

37 

37

38 

38 

43 

44

37

38 

37 

38 

38

41

44 

51 

39 

44 

51

43 

47 

49 

40 

39

Dec.

39

40 

38 

38 

46

44 

51 

44 

60 

70

95 

90 

88 

83 

86

73 

67 

67 

68 

71

84 

90 

86 

90 

95

101 

100 

86 

76 

63 

68

Jan.

69 

69 

66 

65 

66

69 

83 

88 

88 

86

82 

82 

80

76 

71

69

71 

78 

75 

73

73 

78 

77 

74 

66

68 

70 

76 

82 

84 

82

Feb.

76 

68 

64 

69 

73

65 

65 

67 

63 

63

70 

66 

64 

60 

60

66 

74 

75 

73 

75

68 

67 

68 

76 

75

71 

79 

83

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

ber .....................................

lendar year 194S

ter year 1949-50 .......................

Mar.

82 

84 

92 

93 

91

81 

100 

100 

98 

95

95 

94 

95 

97 

92

82 

78 

70 

68 

68

72 

71 

72 

71 

68

72 

76 

73 

73 

69 

66

Apr.

65 

62 

63 

63 

64

69 

66 

66 

69

71

69 

68 

67 

62 

58

56 

55 

52

51 

51

55 

57 

53 

49 

53

53 

54 

50 

59 

58

Secondfoot-days

1,973 

1,187 

2,197

30,037

2,336 

1,943 

2,538 

1,788 

1,383 

1,020 

1,721 

3,026 

1,007

22,119

May

51 

54 

49 

51 

54

50 

51 

53 

53 

53

50 

47 

51 

57 

48

41 

42 

44 

42 

41

37 

38 

37 

36 

36

38 

38 

35 

36 

34 

36

Maximum

816

51 

101

817

88 

83 

100 

71 

57 

43 

347 

489 

80

816

June

40 

41 

35 

34 

34

34 

37 

40 

38 

43

42 

41 

42 

40 

35

31 

38 

33 

32

31

30 

28 

29 

28 

27

26 

29 

29 

27 

26

July

25 

24 

25 

23 

22

22 

25 

24

19 

19

33

39 

43 

74 

65

30 

30 

35 

31 

36

73 

66 

47 

109 

347

90 

81 

73 

72 

66 

53

Minimum

31

33 

38

20

65 

60 

66 

49 

34 

26 

19 

32 

26

19

Aug.

56 

254 

489 

207 

176

119 

330 

290 

104 

50

46 

97 

95 

68 

46

44

41 

41 

,39 

39

39 

37 

41. 

43 

37

34 

33 

33 

32 

32 

34

Mean

63.6 

39.6 

70.9

82.3

75.4 

69.4 

81.9 

59.6 

44.6 

34.0 

55.5 

97.6 

33.6

60.6

Sept.

35 

32 

31 

33 

33

37 

80 

75 

36 

32

33 

40 

29 

28 

30

28 

28 

26 

26 

28

29 

29 

29 

28 

28

28 

31 

29 

29 

27

Runoff In 

acre-feet

3,910 

2,350 

4,360

59,580

4,630 

3,850 

5,030 

3,550 

2,740 

2,020 

3,410 

6,000 

2,000

43,850

Monthly diversion, In second-feet, by Glllesple and Enterprise Canals at Glllesple Dam, Arlz., 

water year October 1949 to September 1950

Month

December. .............

Calendar year 1949..

March. ................

May. ..................

Water year 1949-50. .

Glllesple Canal

Maximum

147 

35 

86

147

75 

69 

87 

56 

40 

32 

70 

112 

61

' 147

Minimum

22 

23 

25

0

55 

48 

53 

38 

21 

17 

2 

22 

17

2

Mean

32.9 

25.9 

56.4

54.1

64.6 

56.5 

69.4 

46.7 

30.1 

23.4 

31.6 

50.5 

23.0

42.6

Runoff In 

acre-feet

2,020

1,540 

3,470

39,170

3,970 

3,140 

4,260 

2,780 

1,850 

1,390 

1,940 

3,110 

1,370

30,840

Enterprise Canal

Maximum

14 

16 

21

27

13 

16 

14

15 

17 

14 

25 

21 

19

25

Minimum

8.2 

10 

11

0

8.5 

8.4 

9.1 

11 

13 

8.8 

8.7 

9 

8.8

8.2

Mean

9.50 

13.7 

14.5

11.8

10.7 

12.9 

12.5 

12.9 

14.5 

10.6 

13.1 

12.2 

10.6

12.3

Runoff In 

acre-feet

584 

813 

893

8,530

659 

714 

770 

770 

895 

631 

803 

752 

628

8,910
GILA RIVER BASIN 385

Gila River near Dome, Ariz.

Location.--Water-stage recorder, lat. 32°45'40", long. 114°25 I 10", in SW£ sec. 4, T. 8 S., 

RT~2T W., at highway bridge 3 milfcs west of Dome and IE miles upstream from mouth. Datum of gage is 148.18 feet above mean sea level, datum of 1929.

Drainage area.--58,100 square miles (includes 344 square miles in Aubrey Valley Playa, a 

closed basin, and excludes all other closed basins).

Records available.--May 1929 to September 1950. January to December 1903 at site 12 miles 

downstream.January 1904 to December 1906 at site 4 miles upstream. January 1907 to 

April 1929 (monthly discharge only) published "in Wa'ter-Supply Papers 918 and 10'49.

Extremes.--No flow during year.

IS29-50: Maximum discharge, 20,700 second-feet Feb. 15, 1932 (gage height 16 75 

feet); no flow during part or all of each year.

Maximum daily discharge, 200,000 second-feet (roughly estimated) Jan. 22, 1916.

Remarks. No flow during calendar year 1949 and water year ending Sept. 30, 1950. Diversions above station for irrigation. Flow above station regulated by reservoirs at and 

above Gillespie Dam (see p. 381).

Revisions (water year).--W 918: 1905.

Sunset Canal near Virden, N. Mex.

Location.i. Water-stage recorder and 6-foot concrete Parshall flume, lat. lat. 32°39'20", 32°39'20 long.

e'OO", in NW| sec. 17, T. 19 S., R. 20 W., 4.5 miles southeast of Virden.'

Records available. October 1914 to September 1915, July 1922 to September 1931, and Jan-

 uary 1339 to September 1950 in reports of Geological Survey. January 1936 to December 

1938 and May 1942 to September 1950 in files of Gila Water Commissioner, appointed by 

the U. S. District Court for Arizona.

Extremes.--Maximum daily discharge during year, 38 second-feet Dec. 31; no flow at times.

 T539-50: Maximum daily discharge, 58 second-feet Apr. 12, 13, 1940: no flow at times. 

Remarks.--Records good. Canal diverts from right bank of Gila: River in SWtNWt sec. 21, T. 19

 S.', R. 20 W., for irrigation in Virden Valley. No diversions between intake and station.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4 

5

6 

7 

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.

15 

15 

15 

16 

15

15 

16 

15 

14 

14

15 

13 

12 

11 

11

11 

10 

9.5 

8.7 

14

17 

17 

17 

17 

17

17 

16 

16 

15 

15 

16

Nov.

17 

19 

25 

32 

31

24

29 

32 

21 

10

10 

10 

11 

11 

11

11 

13 

18 

19 

I?

16 

16 

16 

1 17 

26

25 

15 

12 

13 

13

Dec.

14

14 

14 

16, 

17

17

15 

15

15 

13

6.7 

6.7 

6.7 

6.7 

6.7

14 

16 

11 

19 

25

24 

30 

32 

29 

27

27 

29 

31 

30 

36 

38

Jan.

0.5 

0 

0 

o

0

o

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

o

0

0 

0 

0

o

0

0 

0

o 

o

0 

0

Peb.

0 

0 

0 

0

.1

.2 

.2 

O

o 

o

o 

o

0 

0 

0

0 

12 

19 

17 

17

20 

22

21 

19 

19

19 

19 

16

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Hare 

Aprl 

May.

June 

July 

Augu 

Sept

Ma

lendar year 194!

h. ......................................

ter year 1949-50 .......................

Mar.

14 

11 

8.5 

2.3 

3.0

9.6 

0 

f7.5 

13 

17

17 

17 

17 

16 

14

16 

16 

15 

15 

16

16 

16 

16 

16 

10

10 

18 

16 

16 

17 

16

Apr.

15

16 

17 

14 

14

13 

14 

14 

14 

14

14 

14 

15 

15 

13

14 

14 

14 

14 

14

.4

13 

14

14 

13

14 

16 

16 

16 

15

Secondfoot-days

445.2 

540 

601.5

5,727.4

.5 

220.5 

411.9 

417.4 

504 

254.5 

528.5 

610.1 

330.5

4,864^61

May

16 

15 

16 

17 

17

18 

18 

18 

18 

18

18 

18 

17 

17

17

17 

16 

16 

16 

16

16 

14 

17 

16 

17

13 

15 

14 

13 

15 

15

Maximum

17 

32 

38

46

.5 

22 

18 

17 

18 

20 

32 

36 

16

38

June

17 

20 

19 

17 

17

16 

14 

12 

12 

8.4

6.2 

7.0 

4.6 

3.8 

2.3

1.9 

1.9 

2.2. 

1.7 

.7

.6 

5.7 

16 

12 

10

8.2 

7.0 

3.4 

3.2 

3.7

Minimum

July

2.0 

11 

6.0 

4.8 

4.4

5.1 

6.5 

7.7 

11 

17

18 

18 

17 

17 

17

17 

17 

18 

18 

18

19 

20 

18 

18 

23

32 

31 

27 

30 

32 

28

8.7 

10 

6.7

0

0 

0 

0 

.4

13 

.6 

2.0 

l.'i 

3.0

0

Aug.

31 

 35 33 

36 

36

34 

33 

34 

34 

19

17 

17 

17 

17 

17

17 

14 

13 

14

14

14 

14

13 

13 

12

12 

14 

12 

9.0 

7.9 

7.2

Mean

14.4 

18.0 

19.4

15.7

.02 

7.88 

13.3 

13.9 

16.3 

8.48 

17.0 

19.7 

11.0

13.3

Sept.

9.3 

15 

15 

15

15

15 

15 

12 

11 

16

16 

16 

15 

14

14 

15 

16 

16 

13 

6.0

6.0 

5.8 

5.8 

5.1 

5.5

5.3 

4.8 

4.8 

5.1 

3.0

Runoff in 

acre-feet

8S3 

1,070 

1,190

11,350

1.0 

437 

817 

828 

l.OOO 

505 

1,050 

1,210 

656

9,650
386 GILA RIVER BASIN

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

Location.--Water-stage recorder and 3-foot concrete Parshall flume, lat. 32°41', long.

 I09U U2', in NE-fSE* sec. 31, T. 18 S., R. 21 W., a quarter of a mile east of New MexicoArizona State line and 2.5 miles west of Virden.

Records available.--February 1939 to September 1950.

Extremes.--Maximum daily discharge during year, 13 second-feet Feb. 27; no flow at times.

 I939-50: Maximum daily discharge, 17 second-feet Sept. 16, 1939; no flow at times.

Remarks.--Records fair. Canal diverts from right bank of Gila River in SWiNW^ sec. 21, T.

 19 S., R. 20 W., for irrigation in Virden Valley. Many diversions above and below 

station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

5.6 

4.7 

6.3 

.5 

3.5

6.4 

5.4 

4.3 

3.9 

3.0

5.7 

4.7 

8.0 

2.5 

.9

3.6 

6.4 

5.2 

1.1 

2.2

2.8 

4.7 

6.1 

6.4 

4.4

2.5 

5.4 

5.8 

6.5 

4.0 

5.4

Nov.

5.7 

3.2 

1.7 

.4 

3.1

4.0 

3.8 

1.3 

1.3 

1.3

3.6 

4.8 

11 

8.3 

8.5

9.6 

6.7 

4.7

1.9 

1.0

.9 

.-9 

0 

0 

.1

4.2

11 

9.0 

9.5 

8.1

Dec.

5.1 

2.3

0 

0 

.1

1.0 

.5 

.4 

O 

3.4

6.1 

6.0 

6.0 

5.5 

3.6

5.2 

4.8 

3.0 

8.1

3.1

0 

.6 

0 

0 

0

0 

2.0 

4.4 

1.3 

.8 

3.6

Jan.

2.6 

0 

0 

0 

O

0 

0 

0 

0 

0

0 

0 

0

0 

0

0 

0 

0

o

0

0 

0 

0 

0 

0

0 

0 

o 

0 

0 

0

Feb.

0

o

0 

0 

0

0 

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

.5 

8.5

11

13

4.2

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

Matr

June 

July 

Augu 

Sept

Ua

ber. ....................................

lendar year 1949

ter year 1949-50 .......................

Mar.

o 

.1 

0 

0 

0

0 

0

o

2.1 

7.8

9.3 

7.5 

3.8 

3.1 

4.7

1.6 

0 

0 

0 

0

0 

0 

O 

0 

0

0 

2.3 

6.6 

3.5 

5.0 

.2

Apr.

0 

0 

0 

0 

0

0 

2.6 

5.8 

3.4 

3.2

.6 

0 

0 

.1 

.2

6.9 

3.3 

O

.1 

0

0 

0 

0 

5.1 

6.6

6.4 

7.8 

4 

2.3 

4.5

Secondfoot-days

137.9 

129.6 

76.9

966.6

2.6 

37.2 

57.6 

62.9 

49.8 

46.6 

85.1 

78.1 

57.8

822.1

May

0 

0 

0

o

0

0 

5.0 

3.8 

4.0 

.3

0

0 

.2 

0

o

1.5 

7.6 

8.5 

5.0 

1.9

0 

0 

0 

0 

3.3

5.7 

2.3 

.7 

0 

0 

0

Maximum

8.0 

11 

8.1

14

2.6 

13 

9.3 

7.8 

8.5 

8.1 

9.8 

11 

11

13

June

0

o 

o

4.5

6.0

5.8 

3.8

0 

0 

0

0 

0 

0 

0 

0

o 

o

0 

2.6 

1.2

0 

.1 

6.7 

8.1 

3.2

2.1 

0 

O 

0 

2.5

July

3.0

.1 

0 

.2 

O

1.8 

5.2 

5.7 

4.5 

1.7

0

.3 

0

o

0

.4 

9.8 

9.8 

4.1 

3.0

.1 

0 

0 

0 

0

8.8 

9.5 

9.0 

5.1 

2.0 

1.0

Minimum

0.5 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

5.4 

10 

9.3 

7.1 

f5.2

0 

.5 

O

fll

9.8

f7.0 

3

a. 6 

aO 

aO

0 

0 

0 

0 

0

.4 

2.5 

3.8 

.4

.1

0 

0 

O 

0 

0 

2

Mean

4.45 

4.32 

2.48

2.65

.08 

1.33 

1.86 

2.10 

1.61 

1.55 

2.75 

2.52 

1.93

2.25

Sept.

3.4

11 

4.8 

1.2 

.2

0 

0 

0 

2.7 

7.2

6.6 

3.4 

1.8 

0 

0

O 

0 

1.1 

.9 

5.7

7.6 

.2 

O 

0 

0

0 

0 

O 

0 

0

Runoff in 

acre-feet

274 

257 

153

1,920

5.2 

74 

114 

125 

99 

92 

169 

155 

115

1,630

No gage-height record; discharge computed on basis of records for stations near Virden and at 

wasteway.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 387

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

Location.--Water-stage recorder and 3-foot concrete Parshall flume, lat. 32°41'40", long. 

ICTS°U2'55", in NWfSE^ sec. 31, T. 18 S., R. 21 W., just below intake, at New MexicoArizona State line, and 2f miles west of Virden.

Records available.--February 1939 -to September 1950.

Extremes. Maximum daily discharge during year, 9.5 second-feet Nov. 13; no flow most of 

1939-50: Maximum daily discharge, 11 second-feet Feb. 23, 1940; no flow at times.

Remarks. Records good except those for October to December, which are poor. Discharge 

represents waste from Sunset Canal to Glla River by way of Carlyle Canyon. Intake of 

wasteway is between State line and station on Sunset Canal above State line.

Discharge, In second-feet, water year October 1949 to September 1950

Day! 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

0 

0 

0 

0 

.3

.2 

.1 

.1 

0 

.7

.4 

.1 

.8 

0 

.1

2.2 

3.9 

3.2 

1.1 

0

0 

.8 

1.7 

2.6 

3.6

3.1 

3.3 

1.8 

2.8 

1.5 

.9

MOV.

1.7 

0 

0 

0 

1.7

1.8 

1.7 

0 

.1 

.2

4.4 

6.9 

9.5 

5.5 

.1

.1 

0 

2.6 

1.9 

0

0 

0 

0 

0 

0

3.7 

9.4 

4.3 

3.4 

5.8

Dec.

5.4 

3,0 

.1 

0 

0

1.5 

0 

0 

0 

.8

1.6 

0 

0 

0 

0

.1 

.1 

0 

.2 

0

0 

0 

0 

0 

0

0 

.2 

0 

0 

.1 

.3

Jan. Feb.

Month

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Ha

mber. ...................................

lendar year 194 1 .......................

ter year 1949-50 .......................

Mar.

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

0 

.3 

0 

0 

0 

0

Apr.

Secondfoot-days

35.3 

64.8 

13.4

115.5

0 

0 

.4

0 

1.7 

.1 

.6 

.3 

1.1

117.7

my

0 

0 

0 

0 

0

0

.1

0 

0 

0

0 

0 

0 

0 

0

0 

1.2 

.4 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

3.9 

9.5 

5.4

9.5

0 

0 

.3 

0 

1.2 

.1 

.5 

.1 

.1

9.5

June

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 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

.5 

0 

0 

0

0 

0 

0 

0 

0

.1

0 

0 

0 

0 

0

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

0

.1 .1

0 

0 

0

9

0

0 

0 

0 

0 

0

0 

0

.1

0 

0

0 

0 

0

o

0°

Mean

1.14 2ae

.43

.32

0 

0 

.01 

0 

.05 

.003 

.02 

.01 

.04

.32

Sept.

0.1 

.1 

0 

0 

0

.1 

0 

0 

.1 

.1

.1 

.1 

.1 

0 

0

0 

0 

0 

.1 

.1

.1 

0 

0 

0 

0

0 

0 

0 

0 

0

Runoff In 

acre-feet

70 

129 

27

230

0 

0 

.8 

0 

3.4 

.2 

1.2 

 .6 

2.2

234
388 GILA RIVER BASIN

Moddle Canal near Virden, N. Mex.

Location. Water-stage recorder and 6-foot concrete Parshall flume, lat 32°40'30", long. 

108-59'30" in NE£ aec. 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 

lass to September 1950 in reports of Geological Survey. January 1936 to December 1938 

and May 1942 to September 1950 in files of office of Gila Water Commissioner, appointed 

by U. S. District Court of Arizona.

Extremes . Maximum daily discharge during year, 28 second-feet July 29; no flow at times.

1939-50: Maximum daily discharge, 70 second-feet (estimated) Sept. 30, 1941; no flow 

at times.

Remarks.--Records good. Canal diverts from left bank of Gila River in NW^SE^ sec. 11, T. 

19~S., R. 21 W., for irrigation in Virden Valley including lands formerly under Shriver 

Canal which is no longer in existence. Water used by Dunoan Canal is now also received 

from Moddle Canal. No diversions between intake and station.

Discharge, In second-feet, Mater year October 1949 to September 1950

Day

1 

2 

3 

4

5

6 

7

a

9 

10

11

12 

13 

14 

15

16 

17

le

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

0 

O 

0 

0 

0

0 

O

o

0 

0

0 

1.6 

3.2 

3.4 

" 4.9

6.4 

5.4 

5.9 

6.6 

5.9

5.9 

6.1 

6.4 

6.9 

6.6

6.6 

5.6 

6.4 

6.4 

5.6 

5.6

Mov.

5.6 

4.7 

7.9 

11 

9.9

9.3 

8.8 

9.0 

9.3 

8.8

8.2 

8.2 

8.2 

7.9 

7.9

7.9 

7.4 

7.4 

7.4 

7.4

7.4 

5.9 

5.6 

5.9 

5.6

5.4 

5.4 

7.9 

11 

13

Dec.

11 

11 

11 

12 

12

11 

11 

12 

12 

13

13 

13 

13 

12 

11

9.9 

9.9 

9.9 

9.6 

9.9

9.6 

10 

11 

11 

11

11 

12 

13 

12 

12 

11

Jan. Feb.

0 

0 

O 

0 

0

0

o

0 

0 

0

0 

0 

0 

0 

0

o

0 

0 

0 

0

6.6 

22 

24 

24 

23

23 

15 

4.5

Month

Octo 

Nove

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

Mav

June 

July 

Augu 

Sept

Ha

lendar year 1949 

ary

uary

ter year 1949-50 .......................

Mar.

4.5 

5.6 

4.7 

4.3 

5.2

4.3 

4.4

3.2 

5.9 

5.2

5.2 

5.2 

4.5 

3.4 

3.0

2.3 

3.0 

3.8 

3.8 

3.6

1.7 

1.0 

2.0 

1.8 

2.3

3.S

3.2 

2.5 

2.4 

1.2 

1.6

Apr.

2.3 

2.1 

1.5 

O 

O

O

o 

o

0 

0

o

0 

0 

0 

0

o 

o

0 

0

o

0

o 

o

1.0 

7.8

6.4 

6.6 

6.4 

5.4 

4.7

Seoondfoot-days

111.4 

233.3 

350.8

^ 3,544.3

0 

142.1 

108.3 

44.2 

83.2 

.3 

285.1 

187.2 

135.2

1,681.1

May

4.7 

4.7 

4.7 

3.8 

3.8

5.4 

5.2 

4.5 

4.5 

5.4

6.6 

6.6 

6.1 

4.5 

4.7

3.6 

3.8 

1.1 

0 

0

0 

O 

0 

0 

0

0 

O 

0 

0 

0 

0

MaxlauB

6.9 

11 

13

40

0 

24 

5.9 

7.8 

6.6 

.3 

28 

24 

13

28

June

0 

O 

0 

.3 

0

O

o

0

o 

o

0 

0 

0

o

0 

0

o 

o

0 

0

0 

0 

0 

0

o 

o

0 

0 

0 

0

Minimum

July

0 

4.7 

9.6

0

0 

0 

1.0 

0 

0 

0 

0 

0 

0

0

0 

0 

0 

0 

.4

4.5 

0 

0 

0 

0

0 

6.4 

12 

10 

5.9

5.2 

2.7 

3.0 

3.2 

1.8

12 

24 

19 

17 

26

24 

13 

14 

28 

26 

27

Aug.

24 

24 

21 

13 

21

23 

17 

18 

12 

83.0

a2.0 

al.8 

al.8 

si. 8 

al.8

al.O 

0 

O 

0 

0

0 

0 

0

o

.1

.9 

0 

0 

0 

0 

0

Mean

3.59 

7.78 

11.3

9.71

0 

5.08 

3.49 

1.47 

2.68 

.01 

9.20 

6.04 

4.51

4.61

Sept.

0.3 

.8 

3.2 

4.3 

4.0

2.6 

.1 

0 

0 

0

2.6 

6.6 

3.2 

.2 

0

.4

4.0

10 

11 

13

13 

8.O 

1.8 

1.6 

8.6

5.4 

5.2 

6.4 

6.9 

12

Runoff In 

acre-feet

221 

463 

696

7,030

0 

282 

215 

SB 

165 

.6 

565 

371 

268

3,330

a No gage-height record; discharge computed on basis of waternaeter's report.
GILA RIVER BASIN 389

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

Location.--Water-stage recorder and 4-foot concrete Parshall flume, lat. 32°41, long,

'109 U OVI I , in NEiSEj sec. 6, T. 19 S., R. 21 W., about 500 feet upstream from New MexicoArizona State line and 2f miles west of Virden.

Records available.--February 1939 to September 1950.

Extremes.--Maximum daily discharge during year, 24 second-feet Aug 3; no flow at times. 

T9~39-50: Maximum daily discharge, 34 second-feet Aug. 13, 1944; no flow at times.

Remarks. Records fair except those for periods of backwater or no gage-height record, 

which are poor. Canal diverts from left bank of Gila River in NW^SE^ sec. 11, T. 19 S. 

R. 21 W., for irrigation in Virden Valley. Many diversions above and below station.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2

3 

4

5

6 

7 

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.

ao 

aO 

aO 

ao

0

0 

0 

0 

0 

0

0

.3

1.7 

3.1 

4.3

6.0 

5.6 

5.5 

6.6 

4.6

2.9 

4.4 

5.8 

8.0 

6.4

3.1 

.9 

5.0 

5.1 

3.2 

2.7

Nov.

3.5 

2.5 

2.3 

7.2 

9.5

5.1 

6.5 

9.7 

10 

9.3

8.0 

7.4 

8.4 

8.2 

8.0

3.5 

0 

4.0 

7.2 

7.2

7.2 

4.4 

2.4 

4.0 

5.3

5.0 

4.6 

3.4 

2.9 

4.8

Dec.

6.4 

7.8 

9.0 

9.9 

12

11 

5.6 

7.0 

7.2 

8.6

3.2 

8.2 

9.6 

6.6 

12

10 

9.5 

9.7 

8.6 

5.8

3.7

5.5 

11 

11 

12

11 

11 

11 

12 

12 

10

Jan.

0.7 

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 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

2.3

6.1

14 

12 

1.2

Month

Octo 

Move

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

1.6 

4.8 

3.Z 

3.2 

4.4

3.8 

3.7 

4.0 

5.3 

4.6

4.1 

4.6 

4.3 

3.1 

2.5

2.2 

2.5 

3.4 

3.5 

3.5

2.0 

.1 

1.5 

1.5 

1.1

3.7 

2.1 

2.4 

1.2 

.8 

1.2

Apr.

2.3 

1.9 

1.6 

.5 

0

0 

0 

0 

0 

0

0

o

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

5.4

4.6 

4.6 

6.2 

7.2 

5.0

Secondfoot-days

85.2 

v 171.5 

277.9

2,595.5

.7 

55.6 

89.9 

39.3 

72.0 

.2 

208.6 

167.0 

87.4

1,235.3

May

4.1 

4.1 

4.1 

e3.5 

e3.5

e5.1 

e5.1 

4.8 

1.2 

3.4

e5.1 

e5.8 

6.2 

3.7 

3.5

e3.3 

e3.5 

el. 5 

e.5 

eO

eO 

eO 

eO 

0 

0

0 

0 

0 

0 

0 

0

Maximum

8.0

10 

12

30

.7 

14 

5.3 

7.2 

6.2 

.2 

20 

24 

12

24

June

0

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

.2 

0 

0 

0

0 

0 

0 

0 

0

Minimum

July

0 

0 

0 

0 

0

2.3 

0 

0 

0 

0

0 

3.1 

11 

9.9 

5.5

4.8 

2.2 

2.4 

3.2 

.4

9.3 

13 

15 

16 

20

18 

9.5 

9.0 

20 

18 

16

0 

0 

3.2

0

0 

0 

.1 

_ 0 

0 

0 

0 

0 

0

0

Aug.

20 

23 

24 

10 

21

23 

15 

14 

12 

2.3

a2.2 

a. 3 

aO 

ao 

aO

.2

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

2.75 

5.72 

8.96

7.11

.02 

1.27 

2.90 

1.31 

2.32 

.01 

6.73 

5.39 

2.91

3.38

Sept.

0 

0 

1.5 

.2 

.1

.2 

0 

0 

0 

0

0 

.8 

1.8 

.2 

0

0 

.9 

10 

10 

12

7.6 

7.3 

1.6 

1.1 

6.1

3.7 

3.1 

3.4 

5.8 

10

Runoff in 

acre-feet

169 

340

551

5,150

 1.4 

71 

178 

78 

143 

0.4 

414 

331 

173

2,450

a No gage-height record; discharge computed on basis of engineer's notes and records for station 

near Virden.

e Backwater from water pumped Into canal below gage; discharge computed as explained in footnote a.
390 GILA RIVER BASIN

San Francisco River near Glenwood, N. Mex.

Location. --Water-stage recorder, lat. 33°15'05", long. 108°52'40", in KE^-NWi sec. 23, T. 

la S . , R. 20 W., a quarter of a mile upstream from hot springs and 6 miles south of 

Glenwood. Datum of gage is 4,552.06 feet above mean sea level, datum of 1929.

Drainage area.- -1,660 square miles.

Records available. --October 1930 to February 1934 (at site 4| miles upstream) and February 

J.934 to September 1950 in reports of Geological Survey. October 1927 to December 1931 

(at site 4| miles upstream) in reports of State engineer.

Average discharge. 21 years (1928-31, 1932-50), 65.4 second-feet.

Extremes.- -.Maximum discharge during year, 2,430 second-feet Sept. 30 (gage height, 5.63 

feet); minimum daily, 3.0 second-feet June 18, 19.

1930-50: -Maximum discharge, 7,800 second-feet Jan. 13, 1949 (gage height, 10.74 

feet) by slope-area method; minimum daily, that of June 18, 19, 1950.

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

are poor. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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 

25 

25 

23 

23

29 

28 

27 

26 

26

26 

27 

27 

24 

23

22 

55 

37 

31 

29

29 

29 

31 

32 

53

34 

34 

53 

33 

32 

31

Nov.

51 

51 

51 

33 

32

52 

31

31 

50 

30

54 

32

32 

33 

31

51 

29 

29 

29 

29

30 

50 

51 

30 

28

28 

28 

27 

26 

26

Dec.

28 

29 

29 

29 

29

50 

29 

29 

51 

40

50 

54 

27 

25 

26

26 

29 

52 

55 

55

52 

27 

25 

26 

28

28 

26 

27 

51 

54 

54

Jan.

54 

37 

56 

56 

29

25 

25 

27 

32

35

34 

54 

54 

52 

29

50 

50 

29 

51 

30

30 

29 

29 

30 

51

30 

29 

29 

50

31 

52

Feb.

30

2a

29 

50 

29

28 

28 

28 

29 

28

29 

51 

26 

25 

24

24

25 

26 

26 

26

25 

25 

24 

24 

25

22 

24 

29

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

Mo V

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

51 

31 

30 

29 

50

27 

26 

26 

24 

25

24 

26 

20 

21 

25

22 

21 

21 

19 

19

17 

19 

19 

19 

20

22 

21 

19 

18 

15 

12

Apr.

13 

19 

21 

16 

17

16 

18 

19 

23 

19

17 

20 

19 

19 

20

20

18 

17 

17 

14

14 

16 

19 

15 

16

16 

16 

16 

19 

20

Secondfoot-days

910 

905 

956

53,156.2

959 

746 

694 

529 

481 

317.1 

1,479.1 

681 

530.9

9,168.1

May

17 

15 

11 

16 

16

16 

16 

16 

16 

19

16 

15 

16 

17 

16

13 

12 

11 

15 

17

19 

18 

18 

17 

15

15 

16 

18 

15 

11 

15

Maximum

55

54 

50

4,290

57 

51 

51 

23 

19 

18 

119 

63 

64

119

June

16 

14 

14 

16 

14

18 

14 

12

11 

7.7

9.1 

12 

11 

11 

12

5.6 

5.6 

5.0 

3.0 

4.2

7.0 

7.7 

12 

13 

12

8.4 

12 

12 

9.9 

9.9

July

12 

14 

11 

12 

9.1

12 

13 

92 

a80 

a70

a60 

d45 

34 

28 

24

25 

40 

55 

52 

52

93

51 

35 

102 

110

44

53 

75 

119 

56 

83

Aug.

63 

40 

34

52 

56

28 

25 

22 

20 

20

19 

18 

18 

16 

17

32 

16

16 

21 

20

18 

16 

16 

16 

13

16 

16 

14 

15 

14 

14

Sept.

15 

15 

15 

14 

12

7.0 

7.0 

11 

8.4 

7.7

7.0 

9.9 

12 

15 

12

9.9 

16 

41 

16 

15

14 

13 

14 

54 

30

22 

20 

19 

2O

65

Minimum Mean %£<£

22 29.4 1,800 

26 30.2 1,800 

25 30.2 1,860

9.1 146 105,400

25 50.9 1,900 

22 26.6 1,480 

12 22.4 1,380 

13 17.6 1,050 

11 15.5 954 

5.0 10.6 629 

9.1 47.7 2,930 

13 22.0 1,550 

7.O 17.7 1,O5O

5.0 25.1 18,180

Peak discharge (base, 800 sec. -f t. ) .--July 8 (6 p.m.) 839 sec. -ft.; Sept. 30 (11:45 p.m.) 2,430

sec. -ft. 

a No gage-height record; discharge computed on basis of weather records and records for Olla River 

near Oila. 

d Doubtful gage-height record, discharge computed as explained in footnote a.
GILA RIVER BASIN 391

San Francisco River at Clifton, Ariz.

Location.--Water-stage recorder, lat. 33°03'00", long. 109° 17'45", in SW^SE^- sec. 30, T. 

4 a., R. 30 E., at Railroad Boulevard Bridge at Clifton, 8| miles upstream from mouth. 

Datum of gage is 3,431.67 feet above mean sea level, datum of 1929.

Drainage area. 2,790 square miles.

Records available.--July 1927 to October 1933, May 1935 to September 1950. October 1910 

to July Jiyiti (fragmentary) at several sites, none of which was more than 2j miles upstream.

Average discharge.--24 years (1913-15, 1916-17, 1927-33, 1935-50), 202 second-feet.

Extremes. Maximum discharge during year, 825 second-feet July 27 (gage height, 5.55 feet); 

minimum, 11 second-feet June 21.

1927-50: Maximum discharge, 24,100 second-feet Jan. 13, 1949 (gage height, 15.4 

feet); minimum, 8 second-feet June 18, 19, 1939.

A peak discharge of 90,000 second-feet occurred Jan. 19. 1916 (gage height, 16.8 feet, 

from floodmark, at gage 60 feet upstream from present gage), by slope-area measurement, 

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 fragmentary gage-height record, which 

are fair. Diversions above station for irrigation, mining, and municipal uses.

Revisions (water years).--W 1049: 1911, 1913-15, 1917.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3

4

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

38 

29 

30 

31

Oct.

45 

44 

44 

45 

46

47 

47 

47 

46 

48

50 

48 

45 

45 

45

44

47 

96 

65 

55

55 

55 

62 

66 

61

62 

61 

60 

60 

59 

59

Nov.

59 

59 

57 

59 

59

59 

57 

59 

59 

56

61 

63 

61 

59 

56

55 

54 

54 

56 

57

56 

57 

57 

57 

56

53 

52 

53 

51 

51

Dec.

57 

60 

59 

59 

60

60 

60 

60 

61 

90

145 

112 

83

70 

61

57 

57 

62 

65 

65

66 

65 

60 

57 

57

59 

59 

59 

57 

59 

62

Jan.

62 

65 

68 

67 

67

57 

53 

53 

52 

54

60 

61 

62 

62 

60

59 

56 

56 

56 

57

59 

60 

60 

60 

63

63 

62

61 

60 

62 

63

Feb.

65 

63 

62 

62 

61

61 

60 

59 

59 

61

62 

65 

65 

62 

60

57 

57 

57 

60 

63

63 

63 

65 

65 

65

65 

67 

67

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apri

Iffnv

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 1,200 sec. -ft.). No

f Fragmentary gage-height record; discharg

Mar.

70 

72 

86 

88 

84

77 

72 

71 

68 

65

63 

61 

61 

59 

57

57 

57 

56 

56 

55

54 

56 

59 

59 

59

62 

63 

61 

59 

59 

55

Apr.

50 

50 

50 

52 

51

51 

51 

51 

53 

52

54 

53 

56 

57 

54

54 

54 

54 

50 

48

47 

44 

48 

47 

47

45 

43 

42 

43

42

Secondfoot -days

1,659 

1,702 

2,063

128,632

1,860 

1,741 

1,981 

1,493 

1,008 

593 

2,585 

1,477 

1,065

19,227

May

43 

43 

39 

36 

41

41 

40 

39 

35 

36

35 

34

31

30

30 

28 

25 

24 

25

£9 

30 

31 

32 

34

30 

28 

27 

28 

28 

24

Maximum

96 

63 

145

12,400~l

68 

67 

88 

57 

43 

29 

255 

105 

75

255

June

25 

29 

27 

25 

24

26 

26 

25 

23 

21

19 

19 

18 

18 

18

18 

18 

15 

14 

13

12 

14 

20 

20 

18

18 

16 

16 

18 

20

July

19 

19 

21 

20 

22

26 

25 

25 

62 

72

101 

90

81 

70 

54

43 

70 

98 

100 

71

72 

117 

116 

80 

153

129 

164 

128 

118 

164 

255

Minimum

44 

51 

57

27

52 

57 

54 

42 

24 

12 

19 

22 

21

12

Aug.

f 105 

f88 

83 

81

97

74 

f63 

f52 

f52 

f46

f46 

f41 

f58 

f41 

38

35 

43 

38

50 

40

35 

35 

30 

29 

29

26 

25 

26 

26 

23 

22

Mean

53.5 

56.7 

66.5

352

60.0 

62.2 

63.9 

49.8 

32.5 

19.8 

83.4 

47.6 

35.5

52.7

peak above base, 

e computed from partly estimated gage-height

Sept.

22 

23 

23 

22 

28

38 

44 

27 

24 

23

23 

24 

23 

21 

23

24

27 

34 

58 

49

44

40 

57 

36 

75

66 

54 

46 

43 

44

Runoff in 

acre-feet

3,290 

3,380 

4,090

255,100

3,690 

3,450 

3,930 

2,960 

2,000 

1,180 

5,130 

2,930 

2,110

38,140

record.

207364 O- 52 - 26
392 GILA RIVER BASIN 

Eagle Creek near Double Circle Ranch, near Morenci, Arlz.

Location. Water-stage recorder, lat. 33°18'00", long. 109°29'30", in SEy sec. 32, T. IS., 

RTTB E., unsurveyed. half a mile upstream from head of box canyon, 2| miles downstream 

from Willow Creek, 3-^ miles downstream from Double Circle Ranch, and 17 miles northwest 

of Morenci. 'Altitude of gage, 4,724 feet (by barometer)

Drainage area.--377 square miles.

Hecords available.--August 1944 to September 1950.

Extremes.--Maximum discnarge during year, 874 second-feet July 28 (gage height, 3.68 feet), 

rrom rating curve extended above 270 second-feet on basis of slope-area determination 

for high water of Sept. 11, 1944, at gage height 4.80 feet; minimum, 2.2 second-feet 

Mar. 15.

1944-50: Maximum discharge, 2,400 second-feet Sept. 11, 1944, Jan. 13, 1949 '(gage 

height, 4.80 feet), by slope-area method; minimum, 1.7 second-feet June 21, 1946.

Remarks.--Records excellent prior to July 19, good thereafter except those for periods of 

ice effect, which are fair, and those above 50 second-feet, which are poor. Diversions 

above station for irrigation; 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. 394).

Inflow between station and point 2^ miles downstream, below Sheep Wash, as determined by discharge measurements, was 5.0 second-feet Jan. 6, 5.7 second-feet Apr. 20, 

and 3.4 second-feet Aug. 2. Discharge measurements of the combined flow of Eagle Creek 

900 feet above Willow Creek and Double Circle ditch are as follows:

Date

1949

Oct. 2

20

Nov. 15 

Dec. 1

Discharge 

(second-feet)

2.45

3.5

3.20 

2.83

Date

1949

Dec. 14

Jan. 5

Feb. 9

Discharge 

(second-feet)

2.38

2.37

2.78

Date

1950

Mar. 8

22

Apr. 4 

21

May 11

Discharge 

(second-feet)

3.38

3.71

3.61 

3.13

2.35

Date

1950

June 1

22

July 11 

Aug. 22

Sept. 13

Discharge 

(second-feet)

3.0

1.14

1.0 

1.16

.75

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7

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.

13.3 

14.6 

14.6 

16.6 

17.2

16.6 

16.6 

15.9 

16.6 

17.2

16.6 

15.9 

15.9 

15.9 

15.9

15.9 

17.9 

16.6 

17.2 

17.9

18.5 

18.5 

19.2 

18.5 

17,9

16.6 

17.2 

17.9 

17.9 

17.9 

17.2

Nov.

17.2 

16.6 

15.2 

15.2 

15.9

16.6

17.9 

17.2 

17.9 

19.2

21.0 

19.2 

19.2 

20.1 

21.0

20.1 

18.5 

18.5 

18.5 

17.9

17.2 

15.9 

16.6 

16.6 

16.6

17.2 

16.6 

16.6 

16.6 

*15.9

Dec.

17.9 

16.6 

15.9 

15.9 

17.2

17.2 

16.6 

16.6 

18.5 

25.4

20.1 

b!5.9 

bl5.8 

*16.6 

b!4.6

»11.6

10.1 

9.1 

8.1 

7.6

7.6 

b6.6 

6.6 

6.6 

6.6

6.2 

6.2 

6.2 

6.2 

6.2 

5.9

Jan.

5.9 

6.2 

6.2 

b5.6 

*b5.6

b5.6 

b5.6 

5.6 

5.6 

5.2

5.2 

5.2 

5.2 

5.2 

4.9

4.9 

4.9 

*4.9 

4.9 

4.9

4.9 

4.9 

4.9 

.9 

.9

.9 

.9 

.9 

.9 

.9 

4.9

Feb.

4.9 

4.9 

4.9 

4.9 

4.9

4.9 

5.2 

5.2 

5.2 

5.2

5.6 

5.6 

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

5.6 

6.6 

6.2

Month

Octo 

Move 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

6.2 

6.6 

6.2 

6.2

5.9

5.9 

5.9 

5.9 

5.2 

3.8

3.3 

2.7 

2.9 

2.4

2.4

2.4 

2.7 

3.1 

6.6 

12.1

14.6 

15.2 

15.9 

17.2 

17.9

20.1 

21.0 

21.0 

21.0 

21.0 

20.1

Apr.

19.2 

18.5 

17.9 

16.6 

19.2

21.8 

22.7 

19.2 

17.9 

16.6

17.2 

20.1 

21.8 

21.0 

21.0

21.0 

19.2 

17.9 

17.9 

17.2

17.2 

17.2 

17.9 

19.2 

20.1

20.1 

20.1 

20.1 

20.1 

18.5

Secondfoot-days

522.2 

528.7 

378.2

13,143.9

161.2 

147.4 

303.4 

574.4 

562.7 

509.6 

502.7 

509.5 

489.9

5,189.9

May

17.2 

15.9 

16.6 

17.2 

17.2

16.6 

16.6 

16.6 

16.6 

16.6

17.2 

17.9 

17.9 

17.9 

17.9

17.9 

18.5 

18.5 

18.5 

17.9

19.2 

20.1 

18.5 

19.2 

20.1

20.1 

20.1 

20.1 

21.0 

19.2 

17.9

Maximum

19.2 

21.0 

25.4

1,480

6.2 

6.6 

21.0 

22.7 

21.0 

19.2 

62 

33 

35

62

June

17.9 

17.9 

16.6 

16.6 

16.6

17.9 

18.5 

18.5 

18.5 

17.9

17.9 

17.2 

17.9 

18.5 

17.9

17.9 

16.6 

17.2 

16.6 

16.6

16.6 

17.9 

19.2 

17.9 

16.6

15.2 

15.2 

13.9 

13.3 

12.6

July

12.6 

15.9 

15.2 

12.1 

8.1

6.9 

6.9 

5.9 

7.0 

13.9

13.3 

13.3 

14.6 

15.2 

15.9

15.9 

16.6 

17.9 

16.9 

18.5

17.2 

16.6 

17.2 

16.6 

15.9

14.6 

13.9 

62 

15.2

31 

19.9

Aug.

15.2 

15.2 

15.2 

33 

27.6

20.1 

17.9 

14.6 

13.3 

13.3

14.6 

18.5 

18.7 

14.6 

16.3

13.5 

13.2 

13.8 

15.4 

15.4

15.4 

15.8 

16.7 

16.8 

16.8

17.2 

17.6 

17.6 

14.9 

10.4 

10.9

Minimum i Mean

13.3 16.8 

15.2 17.6 

5.9 12.2

5.6 36.0

4.9 '5.20 

4.9 5.26 

2.4 i 9.79 

16.6 19.1 

15.9 18.2 

12.6 17.0 

5.9 16.2 

10.4 16.4 

10.9 16.3

2.4 14.2

Peak discharge (base, 150 sec. -ft.) . July 28 (3:30 p.m.) 874 sec. -ft.; July 30 (8:30 p

Sept.

10.9 

12.0 

13.8 

14.4 

14.4

14.4 

16.5

12.6 

12.6

12.1

12.1 

12.6 

12.6 

12.1 

11.6

11.6 

35 

26.2 

26.0 

19.6

18.2 

18.2 

18.9 

24.4 

21.0

17.6 

14.1 

14.8 

14.8 

14.8

Runoff In 

acre-feet

1,040 

1,050 

750

26,070

320 

292 

602 

1,140 

1,120 

1,010 

997 

1,010 

972

10,300

.m.) 350

sec.-ft.; Aug. 4 (8 p.m.) 187 sec.-ft.; Sept. 17 (6 p.m.) 339 sec.-ft. 

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
GILA RIVER BASIN 393

Eagle Creek above pumping plant, near Morencl, Ariz.

Location. Water-stage recorder, Parshall flume and weir, lat. 33°04'00", long. 109°26'45" 

in sec. 22, T. 4 S., R. 28 E., 2| miles upstream from Phelps Dodge Corp. pumping plant, 

5 miles west of Morenci, and 13 miles ^upstream from mouth.

Drainage area. 613 square miles.

Records available. April 1944 to September 1950.

Extremes.--Maximum discharge during year, 470 second-feet July 28 (gage height, 4.2 feet, 

rrom floodmarks), from rating curve extended above 260 second-feet on basis of weir 

formula; minimum, 8.2 second-feet July 10.

1944-50: Maximum discharge not determined, occurred Sept. 26, 1944 (stage, about 

10 feet, from floodmarks); minimum, 3.2 second-feet July 1. 1946.

A discharge of 13,000 second-feet (by slope-area method) occurred' Feb. 10, 1932, 

at a stage of 11 feet above nopmal low water at foot bridge Z\ miles downstream; the 

stage of flood of Sept. 26, 1944, was about 2.5 feet lower at same site.

Remarks. Records excellent below 50 second-feet, fair above. Diversions above station 

For~irrigation, mostly above Willow Creek. Water from Black River was pumped into 

Eagle Creek Basin, 51^ miles upstream from this station, for about three-quarters of 

the year (see p. 394). Diversions by pumping for mining, metallurgical treatment of 

ores, and domestic use in and near Morenci and Clifton are made from Eagle Creek, 2| 

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.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

16.8

17.6

18.0

20.1

22. 8

21.9

21.0

20.1

19.7

20.6

21.0

21.0

21.0

21.0

21.0

21.9

22. S

23.7

22.8

24.2

24.2

24.2

24.6

24.2

23.3

22.4

21.9

22.4

21.9

21.9

22.4

Nov.

22.8

22.4

21.9

21.5

21.0

21.0

21.9

23.7

22. S

23.3

27.5

26.1

24.6

24.6

25.1

25.6

25.1

24.2

24.2

23.7

23.3

23.3

22. S

22.8

22.8

23.3

24.2

23.7

23.3

23.7

-

Dec.

25.6

25.1

24.2

23.7

24.2

25.1

25.1

25.1

25.1

35

40

30

24.2

22.8

24.2

21.9

19.7

18.4

17.2

16.4

16.4

16.8

16. S

16.4

16.4

16.0

16.0

15.6

15.6

15.2

15.2

Jan.

15.2

14.8

14.8

14.8

14.1

13.7

13.7

13.0

13.0

13.0

13.0

13.0

14.1

13.7

13.3

13.3

13.3

13.0

13.0

13.0

12.6

12.2

12.2

12.2

11.9

11.9

11.9

11.9

11.5

11.9

11.9

Feb.

11.9

11.9

11.9

12.2

12.2

12.2

12.2

12.2

12.2

12.2

12.6

12.2

12.2

11.9

11.9

11.5

11.5

11.2

11.2

11.2

11.2

11.5

11.5

11.5

11.5

11.5

12.2

12.2

_

-

Mar.

12.6

12.2

12.2

12.6

12.6

12.6

12.2

12.2

12.2

12,2

11.9

11.2

10.5

10.5

10.2

10.2

9.8

9.S

10.2

11.5

15,1

18.0

19.3

21.0

22.4

25.1

26.1

26.1

26.1

26.5

26.1

Apr.

25.6

25.6

25.6

24.6

23.3

26.1

27.5

28.5

26.1

25.1

23.7

Z4.6

27.5

28.0

27.5

27.5

27.5

25.6

24.2

24.2

23.7

23.3

23.3

23.3

24.6

24.6

25.1

25.1

25.1

25.1

May

23.3

22.4

21.9

21.9

23.7

23.7

22.8

22.4

21.9

21.5

21.5

21.5

21.9

21.5

21.5

21.5

21.5

21.9

21.9

21.9

21.9

21.9

22.8

22.8

23.3

22.8

22. S

21.9

21.0

21.0

20.6

June

20.6

20.6

20.1

18.4

18.4

17.6

19.7

19.3

19.3

19.3

18.9

18.9

IS. 9

18.9

IS. 9

18.0

17.2

16.4

16.0

15.6

15.6

16.0

18.0

16.8

15.6

14.8

14.8

14.5

13.7

13.3

-

July

13.0

13.3

13.7

14.1

13.7

13.3

13.0

12.6

10.8

10.2

13.0

13.7

14.5

14.5

15.2

16.0

16.8

17.6

642

62

26.8

30

24.5

20. 1

43

20.7

17.6

e63

79

36

44

Aug.

27.4

22.4

22.7

26.2

46

26.6

24.2

22.4

19.3

18.4

IS. 4

18.4

20.6

18.6

18.4

23. S

19.3

1S.O

18. 0

19.3

19.7

20.1

43

32

22.8

21.9

21.0

21.0

21.0

17.1

13.3

Sept.

13.3

13.3

14.8

17.2

18.0

19.3

31

20.2

17.2

17.2

16.0

15.2

15.6

15.2

15.2

14.8

15.2 '36

32

27.1

23.7

23.7

22.4

23.7

29.3

27.0

20.6

18.9

18.4

21.0

-

Month

Calendar year 1949.

Water year 1949-50.

Secondfoot -days

672.4 

706.2 

669.4

17,835.4

404.9 

331.6 

481.2 

761.5 

684.9 

524.1 

759.7 

701.3 

612.5

7,309.7

Discharge in second-feet

Maximum

24.6 

27.5 

40

950

15.2 

12.6 

26.5 

28.5 

23.7 

20.6 

79 

46 

36

79

Minimum

16.8 

21.0 

15.2

11.2

11.5 

11.2 

9.8 

23.3 

20.6 

13.3 

10.2 

13.3 

13.3

9.8

Mean

21.7 

23.5 

21.6

48.9

13.1 

11.8 

15.5 

25.4 

22.1 

17.5 

24.5 

22.6 

20.4

20. 0

Runoff in 

acre-feet

1,330 

1,400 

1,330

35,370

8O3 

658 

954 

1,510 

1,360 

1,040 

1,510 

1,390 

1,21O

14,500

Pumpage to Clifton and 

Morenci from San Francisco 

River and Eagle Creek 

(acre-feet)

804 

937 

919

9,150

660 

518 

618 

777 

822 

814 

621 

746 

727

8,960

Peak discharge (base, 25O sec.-ft.).--July 19(1O p.m.) 31O sec. ft.; July 25 (5 p.m.) 310 se 

ft.; July 28 (10.p.m.) 470 see.-ft.

e Stage-discharge relation unstable. Draw-down effect caused by high velocities past Intakes. 

Discharge computed on basis of other records In basin, and on adjoining unaffected record guided 

by normal shape of peaks and recessions.
394 GILA RIVER BASIN

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

Location. Water-stage recorder and steel-edged rectangular weir, lat. 33°24'45", long. 

1U9"42'45", in SWf sec. 23, T. 1 N., R. 25 E., unsurveyed, on San .Carlos Indian Reservation, just downstream from end of diversion pipe line, 5? miles southeast of pumping 

plant (on Black River 2,100 feet downstream from Freezeout Creek), 3 miles northeast 

of Point of Pines, and 29 miles northwest of Morenci. Datum of gage is 5,985.19 feet 

above mean sea level (Phelps Dodge Corp. bench mark).

Records available. April 1945 to September 1950.

Extremes. Maximum discharge during year, 22.4 second-feet Mar. 18 (gage height, 2.815 

reet); no flow Dec. 15 to Mar. 16.

1945-50: Maximum discharge, 22.7 second-feet Mar. 18, 1947 (gage height, 2.82 feet); 

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.

Day

1 

2

3

4 

5

6 

7 

S 

9 

1O

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Discharge, In second-feet, Mater year October 1949 to September 1950

Oct.

14.6 

14.6 

14.6 

14.6 

14.5

14.7 

14.6 

14.5 

14.5 

14.6

14.5 

14.5 

14.3 

14.5 

14.3

14.3 

14.2 

14.6 

14.5 

14.6

14.3 

14.7 

14.5 

13.6 

12.5

13.3 

14.7 

15. 0 

14.9 

14.9 

14.7

Nov.

14.9 

15. Z 

14.7 

15. 0 

15. Z

16.5 

15.3 

15.7 

17. 0 

17. 0

16.8 

17.0 

16.4 

17.1 

17.3

15.7 

16.6 

18.4 

16.5 

16. 0

14.7 

14.7 

15.3 

15.0 

15.6

14.5 

15.3 

15.2 

13.6 

12.9

Dec.

13. 0 

13. 0 

1Z.8 

1Z.9 

1Z.9

1Z.9 

12.8 

13.4 

15.0 

14.9

15.3 

15.6 

15.2 

3.7 

0

O 

O 

O 

O 

O

0 

O 

0 

O 

O

O 

O 

O 

O 

0 

O

Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Fe.br 

Marc 

Apr! 

Vtrtv

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

ter year 1949-5O .......................

Mar.

O

o 

o 

o

0

0 

0

o

0 

0

0 

0 

0

o 

o

o

14. Z 

19.5 

18.0 

18.8

18.6 

19.7 

19.6 

19.4 

19.3

19.3 

19.1 

19.3 

16.8 

15.7 

14.7

Apr.

14.4 

14. Z 

13.5 

16.2 

19.1

19.0 

14.1 

11.5 

11.6 

11. Z

13.4 

16.1 

15.9 

14.9 

15.4

14.4 

12.9 

13.1 

12. S 

13.0

13. 0 

13.6 

16.1 

19.4 

18.4

18.5 

18.5 

18.5 

16.9 

15.2

Secondfoot -days

447.2 

471.1 

183.4

3,835.1

O 

0 

272.0 

454.8 

497.1 

512.7 

36O.2 

426.8 

403,6

4,028.9

May

14.7 

15.4 

14.9 

15.5 

13.2

14.0 

14.0 

14.2 

13.9 

14. Z

13.8 

13.9 

13.9 

14.O 

14.9

17.8 

16.2 

16.9 

16.4 

17.0

19.6 

18.1 

19.0 

18.7 

18.8

IS.S 

18.8 

IS. 8 

17.1 

15.1 

15.5

Maximum

15.0 

IS. 4 

15.6

20.7

0 

0 

19.7 

19.4 

19.6 

20.5 

15.0 

19.4 

18.8

20.5

June

15.5 

15.4 

15.5 

15.5 

17.1

19.6 

IS. 7 

19.0 

19.4 

20.5

2O. 0 

19.9 

20.0 

2O.O 

19.9

17.7 

17.2 

16.6 

16.9 

16.5

16.6 

16.4 

16.6 

15. 0 

14. 0

14.7 

14.7 

14.4 

14.7 

14.7

July

14.7 

14.4 

11.6 

5.9 

4.O

Z.4 

.1 

9.4 

15.0 

14.3

14.7 

14.6 

14.6 

14.6 

14.8

14.4 

14.7 

14.7 

12.7 

13.4

11.2 

11.6 

11.4 

11.8 

11.5

11.1 

11.1 

11.3 

11.4 

11.4 

11.4

Minimum

12.5 

12.9 

0

O

0 

0 

O 

11.2 

13.2 

14.0 

.1 

S.O 

11.3

O

Aug.

13.1 

13.4 

13.6 

13.2 

13.5

13.5 

11.8 

11.3 

11.3 

11.4

11.5 

11.4 

11.5 

12.9 

13.2

13.2 

13.4 

15.4 

16.2 

16.9

16.9 

17.0 

17.1 

18.3 

19.0

19.4 

18.8 

12.8 

8.0 

8.9 

8.9

Mean

14.4 

15.7 

5.9Z

10.5

0 

O 

8.77 

15.2 

16. 0 

17.1 

11.6 

13.8 

13.5

11.0

Sept.

12.0 

15.0 

15.0 

14.6 

13.6

12.2 

11.8 

1Z.7 

11.7 

11.5

IZ.O 

11.9 

11.6 

11.6 

11.5

12.3 

11.8 

14.0 

15.7 

15.2

15.7 

17.9 

IS. 8 

18.8 

15.0

11.3 

11.9 

12.0 

12.3 

12.2 

-

Runoff In 

acre -feet

887 

934 

364

7,61O

O 

O 

540 

902 

9SS 

1,OZO 

714 

847 

SOI

8,OOO
GILA HIVER BASIN 395

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

Location. Water-stage recorder and concrete control, lat. 330 22'45", long. 109°39'00", in 

MW£ sec. 2, T. 1 S., R. 26 E., unsurveyed, on San Carlos Indian Reservation, 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. Alti'tude of gage, 5,804 feet (by barometer).

Drainage area. 102 square miles.

Records available.--August 1944 to September 1950.

Extremes. Maximum discharge during year, 37 second-feet July 1 (gage height, 2.86 feet); 

no now for many days' from December to March.

1944-50: Maximum discharge, 1,200 second-feet July 10, 1946 (gage height, 7.96 

feet), by slope-area method; no flow for many days each year.

Remarks. Records excellent except those for period of ice effect, which are poor. Almost 

all flow past this station is water pumped from Black River (see record on preceding 

page).

Discharge, In second-feet, Mater year October 1949 to September 195O

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 

3O 

31

Oct.

13. S 

13.8 

13. S 

14.1 

13.8

13. S 

13.8 

13. S 

13.8 

14.1

14.1 

13.8 

13.8 

14.1 

14.1

14.1 

14.4 

14.1 

14.1 

14.1

13. S 

14.1 

14.1 

13.8 

ll.S

11.8 

13.8 

13.8 

13. S 

14.1 

13.8

Nov.

13. S 

13.8 

13.8 

14.1 

13.8

14.9 

14.9 

14.9 

15.7 

16.0

16.3 

16. O 

15.7 

16.6 

17.1

15.4 

16.0 

18.0 

16.3 

15.7

14.3 

14.6 

14.9 

14.9 

15.2

14.2 

14.9 

14.6 

13.3 

12.5

Dac.

*12.S 

12. S 

12.8 

12.8 

12.8

12.5 

12.5 

13.3 

15.5 

b!4.5

b!3.8 

b!4.8 

blS.O 

b9.6 

.7

.1 

O 

O 

O 

0

O 

O 

O 

0 

0

O 

O 

O 

0 

0 

0

Jan. Feb.

Month

Octo 

Hove

Dece

Ca

Janu 

Febr 

Marc 

Aprl

Mav

June 

Julj 

Augu 

Sept

Ha

lendar year 194! ....... .. ........

ter year 1949-50 .......................

Peak discharge (base, 60 sec. -ft.

Mar.

0 

O

o 

o 

o

o 

o 

o 

o 

o

0

o 

o

0 

0

o

5.1 

17.4 

16.6 

17.4

17.0 

IS. 5 

18.3 

IS.O 

18.0

18.0 

18.0 

18.3 

16.8 

14.9 

14.1

Apr.

14.1 

13. S 

13.3 

14.7 

18.3

1S.3 

15.7 

11.3 

11.0 

10.6

11.5 

15.2 

15.2 

14.1 

14.4

13.6 

ll.S 

12.0 

12. 0 

12.0

12.3 

13.3 

14.7 

IS. 8 

IS.O

18.0 

IS.O 

18.0 

17.1 

14.6

Secondfoot-days

428.0 

452.2 

186.3

4,911.6

O 

O 

246.4 

435.7 

472. 0 

478.3 

341.1 

400.4 

391.3

3,831.7

May

13.8 

14.4 

14.4 

14.6 

12.6

13.3 

13.3 

13.3 

13.3 

13.3

13.0 

13.3 

13.3 

13.3 

13.3

17.1 

15.5 

15.7 

15.5 

15.7

18.5 

17.1 

IS.O 

IS.O 

IS.O

18.0 

IS.O 

IS.O 

17.1 

14.4 

14.9

Maximum

14.1 

18.0 

15.5

348

0 

O 

18 5 

IS. 8 

18.5 

18.5 

16.3 

IS. 3 

18.8

18.8

June

14.9 

14.15 

14.6 

14.6 

15.2

18.3 

17.4 

17.7 

17.7 

18.5

18.5 

18.3 

18.3 

18.3 

18.3

17.0 

15.7 

15.2 

15.5 

15.2

15.7 

16.3 

15.7 

14.4 

13.6

13.8 

13.8 

13.6 

13.8 

13.8

July

16.3 

14.1 

12.0 

6.5 

3.5

4.3 

.4

5.2 

14.4 

14.1

14.1 

13.6 

13.6 

13. S 

13.3

13.0 

13.6 

13.6 

11.5 

12. 0

11.6 

1O.6 

10.3 

11.0 

1O.6

10.1 

10.1 

10.3 

10.S 

11.5 

11.3

Minimum

ll.S 

12.5 

O

O

0 

0 

0 

1O.6 

12.6 

13.6 

.4 

6.3 

10. O

0

Aug. 

11.0 

12.3 

12.3 

12.3 

12.5

12.3 

11.5 

10.1 

10.3 

1O.6

1O.6 

1O.6 

10.6 

13.8 

12. S

12.5 

12.5 

14.9 

15.2 

16.3

15.7 

16.3 

16.3 

17.1 

18.3

18.3 

IS.O 

15.6 

6'. 3 

8.3 

S.O

Mean

13. S 

15.1 

6.O1

13.5

0 

0 

7.95 

14.5 

15.2 

15.9 

11.0 

12.9 

13.0

10.5

Sept.

1O.O 

13. S 

14.1 

13.8 

13.8

11.8 

11.5 

11.5 

ll.S 

11.3

11.5 

11.5 

11.3 

11.0 

11.0

11.2 

12.2 

14.0 

16.3 

14.9

15.5 

16.4 

IS. 8 

18.5 

16. S

1O.9

11.3 

11.5 

11.5 

11.5

Runoff In 

acre-feet

849 

S97 

370

9,740

0 

O 

489 

S64 

936 

949 

677 

794 

776

7,6OO

. No peak above base.

* Winter discharge measurement made on this day 

b Stage-discharge relation affected by Ice.
396 GILA RIVER BASIN

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

Location. Water-stage recorder, lat. 33°21'15", long: 109°31'30n , in NE£ sec. 13, T. 1

 S., K. 27 E., unsurveyed, on San Carlos Indian Reservation, 1 mile upstream from lower 

end of box canyon, 2£ miles northwest of.aouble Circle Ranch, 2? miles upstream from 

mouth, and 19 miles northwest of Morenci: 'Altitude of gage, 4,969 feet (corrected), 

by barometer.

Drainage area. 149 square miles.

Records available. August 1944 to September 1950.

Extremes.--Maximum discharge during year, 27.6 second-feet Dec. 11 (gage height, 3.555

 feet}; minimum, less than 0.1 second-foot Jan. 16, during period of ice effect; minimum 

daily, 0.7 second-foot on several days during February and March.

1944-50: Maximum discharge, 2,010 second-feet Jan. 13, 1949 (gage height, 6.49 feet), 

from rating curve extended above slope-area determination at 1,100 second-feet; 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, 

portion of flow past this station is water pumped from Black River (see p. 394).

Major

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

12.9 

12.9 

12.9 

13.8 

13.6

13.3 

13.3 

13.1 

13.3 

13.6

13.1 

12.9 

12.9 

12.9 

13.1

12.9 

13.8 

13.1 

13.3 

13.6

13.6 

13.6 

13.8 

13.6 

11.5

11.3 

13.3 

13.3 

13.3 

13.6 

13.3

Nov.

13.6 

l3.6 

13.6 

13.8 

13.8

14.0 

15.2 

15.0 

15.2 

16.2

17.0 

16.2 

16.4 

16.2 

16.2

16.7 

16.2 

16.2 

16.4 

16.4

14.7 

14.7 

14.7 

14.5 

14.5

14.5 

14.5 

14.5 

13.8 

12.7

Dec.

*13.8 

13.1 

12.7 

12.7 

12.7

12.4 

12.4 

12.7 

15.0 

17.5

12.8 

10.8 

b!4.3 

*b!5.1 

b7.0

*b3.9 

3.2 

2.5 

2.2 

2.1

1.9 

1.7 

1.6 

1.5 

1.4

1.3 

1.4 

1.5 

1.3 

1.3 

1.3

Jan.

1.3

1.4 

1.4 

1,2 

*1.2

bl.3 

bl.3 

1.2 

1.0 

.8

.8 

.8 

1.1 

.8 

b.9

b.8 

b.8 

*1.0 

1.0 

1.0

1.1 

1.1 

1.1 

1.1 

1.2

1.0 

.8 

.9 

1.0 

1.1 

1.1

Feb.

0.9 

.9 

.9 

1.0 

1.0

1.0 

1.0 

1.0 

 1.0 

1.0

1.0 

1.0 

.9 

.8 

.8

.8 

.8 

.8 

.8 

.8

.8 

.7 

.7 

.7 

.7

.7 

.9

.8

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

1................................ .......

ter year 1949-50 ....'...................

Mar..

0.8 

.9 

.9 

.8 

.8

.7 

.7 

.7 

.7 

.7

.8 

.8 

.8 

.8 

.8

.9 

.8 

2.0 

12.7 

15.0

16.4 

16.7 

17..2 

17.5 

17.8

18.6 

18.6 

18.3 

17.2 

15.9 

15.0

Apr.

14.3 

14.3 

13.8 

13.6 

17.2

18.0 

18.0 

12.5 

12.2 

11.5

11.3 

14.5 

14.5 

14.5 

14.3

14.5 

12.4 

12.2 

12.0 

11.8

11.8 

12.2 

12.4 

16.7 

17.2

17.5 

17.5 

17.5 

17.5 

15.0

Secondfoot-days

408. 

451. 

225.

6,110.

32. 

24. 

232. 

432. 

460. 

455. 

357. 

403. 

369.

3,851.9

May

14.3 

14.3 

14.3 

14.7 

13.6

13.1 

13.1 

13.1 

13.1 

13.1

12.9 

13.1 

13.1 

13.1 

13.1

14.7 

15.2 

15.5 

15.5 

15.5

17.2 

17.0 

17.0 

17.0 

17.2

17.2 

17.2 

17.2 

17.0 

14.0 

13.8

Maximum

13.8 

17.0 

17.5

800

1.4 

1.0 

18.6 

18.0 

17.2 

17.2 

15.3 

18.0 

17.5

18.6

June

14.3 

14.3 

13.8 

13.8 

13.8

16.2 

17.0 

16.7 

16.7

17.0

17.2 

17.2 

17.2 

17.2 

17.2

17.2 

14.5 

14.5 

14.5 

14.3

14.3 

16.2 

16.4 

15.5 

13.3

13.1 

12.9 

13.1 

13.1 

12.9

July

13.3 

15.3 

13.8 

9.2 

5.6

5.1 

4.8 

2.5 

6.9 

12.9

12.4 

12.9 

13.1 

13.8 

14.0

13.3 

13.8 

14.7 

14.3 

13.7

12.9 

12.6 

12.0 

11.5 

11.7

10.6 

10.2 

11.3 

11.5 

13.1 

14.3

Minimum

11.3 

12.7 

1.3

.7

.8 

.7 

.7 

11.3 

12.9 

12.9 

2.5 

7.3 

7.6

.7

Aug.

11.5 

13.1 

12.7 

13.1 

12.7

12.9 

12.9 

10.9 

10.4 

10.0

11.1 

10.9 

10.6 

10.6 

12.4

12.9 

12.2 

13.1 

14.5 

14.7

15.2 

15.9 

16.4 

16.2 

17.5

17.5 

18.0 

18.0 

10.7 

7.3 

7.8

Mean

13.2 

15.0 

7.26

16.7

1,05 

.86 

7.49 

14.4 

14.8 

15.2 

11.5 

13.0 

12.3

10.6

Sept.

7.6 

11.3 

13.1 

13.6 

13.8

12.2 

12.0 

10.6 

11.2 

11.1

10.6 

10.9 

10.4 

10.2 

10.2

10.2 

11.3 

12.0 

16.2 

15.0

14.3 

14.7 

17.0 

17.2 

17.5

12.0 

10.5 

10.6 

10.9 

10.9

Runoff in 

acre -feet

810 

895 

446

12,120

65 

48 

461 

858 

913 

903 

708 

801 

732

7,640

Peak discharge (base, 6O sec. -ft.}. No peak above base.

Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
GILA RIVER BASIN 397

San Simon Creek near San Simon, Ariz.

Location.--Water-stage recorder, lat. 32°13', long. 109°10' , in SW£ sec. 10, T. 14 S., R. 

31 K., 4j miles southeast of San Simon.

Drainage area. 803 square miles.

Records available. June 1931 to October 1933, May 1935 to June 1941 (discontinued). 

August lyiy to September 1925 at site 3| miles downstream.

Average discharge.--13 years (1919-25, 1931-33, 1935-40), 5.44 second-feet.

Extremes.--1919-85, 1931-41: Maximum discharge, 5,350 second-feet July 21. 3923; no flow 

greater part of each year.

Revisions.--The figures of maximum discharge for the water years 1931-40 have been 

revised as shown in the following table. They supersede figures published in the watersupply papers listed.

Water-Supply 

Paper

719.........

734 .........

749.. .......

789. ........

789.. .......

809.........

829.........

859.........

879.........

899.. .......

Water 

year

1931t

1931-32

1932-33

1933-34

1934-35*

1935-36

1936-37

1937-38

1938-39

1939-40

Date

Aug. 10

July 25

Aug. 18

Aug. 9

June 29

Aug. 13

June 29

Gage height 

(feet)

11.15

7.3

7.71

ttll. 2

11.7

10.85

5.80

8.50

9.25

10.9

Discharge 

(second-feet)

4,500

1,250

1,550

tt4,550

5,020

4,190

548

2,280

2,840

4,280

t Period June to September.

t Period May to September.

tt From high-water mark.

Mote.--Maximum discharge for the period Oct. 1-31, 1933, has 

been revised to 810 second-feet Oct. 9 (gage height, 6.67 feet), 

superseding figure published in Water-Supply Paper 764.

Remarks.--Small diversions above station for irrigation.

Revisions. Revised figures of discharge for the water years 1931-39, are given herewith. 

They supersede figures published in Water-Supply Papers 719, 734, 749, 764, 789, 809, 

829, 859, 'and 879.

Day » 

(water year)

1930-31

Aug. 1.. ....

2......

3......

4.. ....

5.. ....

9......

10......

11. . ....

20. .....

Sept. 4......

10. .....

14......

29......

1931-32

Oct. 1. ..... 

July 2......

22......

24......

25......

29......

Aug. 4......

9......

14......

23......

1932-33

Dec. 14. .....

15......

Discharge 

(second- feet)

139

104

26

269

37

406

1,100

33

18

2

3

9

3

4 

38

4

21

59

69

15

27

12

50

2

6

Day 

(water year)

1932-33

Feb. 26.....

Aug. 3.....

4. ....

1933-34

Oct. 9.....

1934-35

Aug. 3.....

4.. ...

5.....

6.....

7.. ...

12.....

15..... 

24.....

25.....

28. ....

29.....

30... ..

31.....

Sept. 23.....

24.....

1935-36

July 25.....

27.....

Aug. 3.....

18.. ...

19.....

Discharge 

(second-feet)

11

51

142

190

97

41

263

26

169

92

18 

37

154

555

338

1,170

193

91

59

69

22

38

576

177

Day 

(water year)

1935-36

Aug. 28....

Sept. 20.. ..

21.. ..

26.. ..

27....

1936-37

Aug. 9....

1937-38

Oct. 16....

Mar. 4....

June 28. ...

29....

July 29.... 

Aug. 4. ...

13....

14....

1938-39

July 24....

25....

27....

30. ...

31....

Aug. 3....

5....

11....

13.. ..

14....

Discharge 

(second-feet)

65

58

116

111

79

34

54

52

77

227

88 

49

54

75

58

53

72

66

213

54

141

67

285

65

Revised peak discharges. --1938: June 29 (12:10 a.m.) 2.28O sec. -ft.; July 29 (2:4O a.m.)

51O0 sec.c.-ft.; -ft.Aug. 4 (9:20 p.m.) 699 sec.c.-ft. -ft

1939: July 24 (11:25 p.m.) 1,OOO sec.-ft.; July 27 (3:35 p.m.) 773 sec.-ft.; July 30 

(9:15 p.m.) 773 sec.-ft.; July 31 (7:15 p.m.) 2,360 sec.-ft.; Aug. 5 (7:15 p.m.) 1,840 sec.- 

ft.; Aug. 11 (9:15 p.m.) 940 sec.-ft.; Aug. 13 (8:05 p.m.) 2,840 sec.-ft.
398 GILA RIVER BASIN

Revised figures of discharge of San Simon Creek near San Simon, Ariz., 1931-33, 1935-39

Month

The period June to September 1931. . .

July 1932. ............................

Water year 1931-32. .................

Water year 1932-33. .................

The period May to September 1935....

Water year 1936-37..................

July 1939. ............................

Secondfoot-days

117.7

339.5

271

520.97

382

1,456

169

233

213

836

768

Maximum

1,100

69

50

69

142

142

190

116

576

34

54

75

227

385

Minimum

0

0

0

0

0

0

.03

0

0

0

0

0

0

0

0

0

0

0

0

Mean

68.8

.6

.14

6.47

3.80

.93

.32

.46

8.74

1.43

9.1

103

3.9

30.2

12.7

4.0

2.2

.5

2.1

.6

l."7

10.2

6.9

2.4

2.3

15.4

24.8

3.8

Runoff in 

acre-feet

4,230

34

4,299--

8.7

398

233

673

19.6

25.5

538

1,030

559

321

6,620

240

758

2,890

2,890

137

336

463

607

422

1,660

944

1,520
GILA RIVER BASIN 399

San Simon Creek near Solomon, Ariz. 

(Formerly 'published as San Simon Creek near Solomonsville)

Location. --Water-stage recorder and concrete control, lat. 32°48 I 06", long. 109°38 I 19", in 

 NW£NE£ sec. 25, T. VS., R. 26 E., 1 mile southwest of Solomon and 2j miles upstream 

from mouth. Datum of gage is 2,960.15 feet above mean sea level, datum of 1929.

Drainage area. --2, 280 square miles.

Records available. --June 1931 to September 1932, May 1935 to September 1950. Prior to 

Oct. 1, 1949, published as San Simon Creek near Solomonsville.

Average discharge.- 16 years (1931-32, 1935-50), 13.0 second-feet.

Extremes . Maximum discharge during year, 2,060 second-feet Sept . 18 (gage height, 7.42 

feet J ; no flow for many days.

1931-50: Maximum discharge, 27,500 second-feet Aug. 9, 1931 (gage height, 19.0 

feet), by slope-area method; no flow for many days in each year.

Remarks . --Records good except those for periods of fragmentary gage-height record, which 

are poor. Small diversions above station for irrigation. Records do not include 

waste water passing station from San Jose Canal, which diverts from Gila River.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

0 

0 

0 

0 

0

o

0 

0

o

0

0

o

0 

1.5

fl.O

0 

18 

0 

0

o

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov. Dec. Jan. Peb.

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apri 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar. Apr.

Secondfoot-days

20.5 

O 

0

7,310.8

0

o

0 

0 

0 

18.8 

2,367.3 

292.2 

143.4

2,842.2

May

Maximum

18 

O 

0

1,740

0 

0

o

0 

0 

16 

861 

148 

142

861

June

0 

0 

0 

0 

0

o

0 

0

0 

0

0

0

o

0 

0

0 

0 

0 

0 

0

0 

16 

f2.8 

0 

0

0 

0 

0 

0 

0

Minimum

July

0 

0 

0 

0 

0

f!38 

9.7 

43 

f37 

0

0 

0 

0 

5.0

f.2

0 

f439 

38 

0 

0

53 

f.6 

0 

f79 

56

189 

4.8 

0 

42 

372 

861

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

o

Aug.

148 

f45 

f2.6 

0 

0

0 

0 

0 

O 

0

5.6

.7 

0 

0 

0

o

0 

0 

0 

0

0 

0 

4.5 

84 

fl.8

0 

0 

0 

0

o

0

Mean

0.66 

0 

O

20.0

0 

0

o

0

0 

.63 

76.4 

9.43 

4.78

7.79

Sept.

O 

0 

0 

0 

0

0

.1 

o

0 

0

0 

0 

0 

0 

0

0

.7 

142 

.6 

O

0 

0 

0 

0 

0

0 

0

o

0 

0

Runoff in 

acre-feet

41 

0 

0

14,500

0

0 

0 

0 

0 

37 

4,700 

580 

284

5,640

Peak discharge (base, 2,500 sec. -ft.). Ho peak above base.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
400 GILA RIVER BASIN

San Carlos River near Peridot, Ariz.

Location.--Water-stage recorder, lat. 33°19'20", long. 110°26'50", in NW£ sec. 30, T. I 

S., K. 19 E., unsurveyed, on San Carlos Indian Reservation, at highway bridge 2 miles 

downstream from San Carlos and 2 miles upstream from Peridot. Datum of gage is 

2,582.71 feet above mean sea level, datum of 1929.

Drainage area.--1,040 square miles.

Records available.--February 1942 to September 1950. March to September 1929 (discharge 

measurements only) and October 1929 to January 1942 at site 4 miles downstream. August 1910 to January 1911 (gage heights only) and April 1914 to September 1915 (fragmentary) at site 9j miles downstream, published as San Carlos River at San Carlos.

Average discharge. 21 years (1929-50), 48.5 second-feet.

Extremes. Maximum discharge during year, 2,150 second-feet July 21 (gage height, 6.68 

I'eet), from rating curve extended above 530 second-feet by logarithmic plotting; no 

flow for many days during summer.

1929-50: Maximum discharge, 40,600 second-feet Mar. 14, 1941 (gage height, 11.4 

feet, site and datum then in use), from rating curve extended above 23,000 second-feet 

on basis of records of inflow to San Carlos Reservoir; no flow for several days in 

most years.

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

which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4

5

6 

7 

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.

0.3 

.3 

.5

.9 

2.5

2.7 

2.2 

2.2 

2.5 

3.0

3.0 

2.5 

2.3 

2.3 

2.3

2.3 

2.7 

2.7 

3.0 

3.8

3.8 

3.4 

3.8 

4.1 

4.1

3.4

4.4 

4.8 

4.8 

4.4 

4.8

Nov.

5.2 

4.8 

4.8 

4.4 

4.1

4.1 

5.2 

4.8 

3.4 

4.4

4.1 

4.1 

4.1 

4.1 

5.2

4.1 

3.0 

3.0 

3.0 

3.0

3.4 

4.4 

5.2 

4.1 

3.8

4.1 

3.8 

3.8 

3.8 

3.8

Dec.

4. 

4. 

4. 

4. 

3.

4. 

4. 

4.4 

4.8 

13

11 

7.9 

6.8 

6.8 

6.8

6.8 

6.8 

6.8 

6.8 

7.4

7.9 

6.8 

6.2 

6.2 

6.2

5.8 

5.8 

5.8 

6.2 

6.2 

6.2

Jan.

6.8 

7.4 

6.8 

6.2 

6.2

6.2 

6.8 

7.4 

7.4 

7.9

7.9 

7.9 

9.1 

9.7 

9.7

9.1 

8.5 

8.5 

7.9 

7.9

9.1 

9.7 

9.1 

7.9 

7.9

7.4 

6.8 

6.8 

6.8 

9.1 

9.7

Feb.

8.5 

8.5 

8.5 

8.5 

8.5

8.5 

8.5 

8.5 

8.5 

8.5

9.1 

13 

11 

9.1 

9.1

8.5 

7.9 

7.9 

8.5 

8.5

7.9 

7.9 

7.9 

7.4 

7.4

7.9

11 

10

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

Vfav

June 

July 

Augu 

Sept

Wa

mber. ...................................

lendar year 1949

ter year 1949-5O .......................

Peak discharge (base, 2.20O sec. -ft.). No

Mar.

9.7 

13 

49 

34 

21

16 

13 

12 

11 

10

10 

10 

10 

10 

9.7

10 

11 

11 

9.1

3.7

7.9 

7.9 

7.9 

8.5 

6.8

7.4 

7.4 

7.4 

6.8 

6.2 

5.8

Apr.

5.8 

6.2 

6.2 

6.2 

6.8

6.8 

6.2 

5.8 

5.8 

6.2

7.4 

8.8 

6.8 

6.2 

4.8

5.2

5.8 

4.8 

4.8 

3.0

3.4 

3.8 

4.1 

3.0 

3.0

3.0 

2.5 

2.5 

2.3 

2.5

Secondfoot-days

89.8 

123.1 

194.0

10,897.2

245.6 

245.0 

369.2 

147.7 

40.9 

0 

996.0 

354.6 

173.7

2,979.6

peak above

May

2.3

2.0 

1.8 

1.8 

2.7

3.0 

2.3

2.5 

2.5 

3.0

2.5 

2.5

2.2 

1.8 

1.4

1.8 

1.4 

.9 

.7 

.7

.7 

.1 

.1 

.1 

.1

0 

0

o

0 

0 

0

Maximum

4.8 

5.2

13

1,220

9.7 

13 

49 

7.4 

3.0 

0 

202 

98 

51

202

base.

June July

0 

0 

0 

0 

0

1.0 

53 

55 

20 

10

3.0 

1.8 

.7 

1.2 

3.9

.9 

80 

152 

41 

121

202 

f40 

x a9.0 

a'2.7 

a. 9

a. 4 

a. 2 

a.l 

f9.2 

flOO 

87

Minimum

0.3 

3.0 

3.4

0

6.2 

7.4 

5.8 

2.3 

0 

0 

0 

1.3 

1.4

0

Aug.

25 

a7.2 

a2.2 

al.3 

98

15 

5.7 

3.4 

3.4 

3.0

97 

f27 

f9.0 

3.4 

3.0

3.0 

3.4 

3.0

2.4 

2.7

2.7 

2.7 

2.4 

11 

3.4

 2.4 

2.0 

3.5 

2.4 

2.2 

1.8

Mean

2.90 

4.10 

6.26

29.9

7.92 

8.75 

11.9 

4.92 

1.32 

0 

32.1 

11.4 

5.79

8.16

Sept.

1.4 

1.4 

2.0 

2.0 

2.9

10 

51 

15 

7.2 

4.4

3.0 

3.0 

3.0

2.7 

2.4

2.4 

8.2 

6.3 

14 

5.7

3.4 

2.7 

2.7 

2.7 

3.4

2.0 

2.4 

2.0 

2.0 

2.4

Runoff In 

acre-feet

178 

244 

385

21,610

487 

486 

732 

293 

81 

0 

1,930 

703 

345

5,910

a No gage-height record; discharge computed on basis of normal recession curve.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 401

San Pedro River at Palominas, Ariz.

Location (revised).--Water-stage recorder, lat. 31°22'45", long. 110°06'45", in SEj sec. 33, 

T. H3 s., H. 22 E.. at highway bridge 0.7 mile east of Palominas,~2§ miles upstream from 

Greenbush Creek, 4? miles downstream from international boundary, and 13 miles southwest 

of Bisbee. Former gage at same site at datum 0,29 foot lower.

Drainage area. 741 square miles, of which 649 square miles is in Mexico.

Records available. May 1930 to October 1933, May 1935 to July 1941, July to September istju. 

Extremes. Maximum discharge during period July to September 1950, 6,270 second-feet

July 5 (gage height, 8.5 feet, from floodmarks); minimum daily, 0.1 second-foot Sept 20, 

28-30. Maximum discharge for period is also maximum for year.

1930-41, 1950: Maximum discharge, 22,000 second-feet Aug. 14, 1940 (gage height, 

16.16 feet, present datum), by slope-area method; practically no flow at times in 

several years.

Greatest flood known occurred Sept. 28, 1926 (gage height, about 23.9 feet, present 

datum; discharge not determined).

Remarks. Records good ejccept those for period of 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.

Discharge, in second-feet, water year October 1949 to September 195O

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

Oct.

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

MAV

June 

July 

Augu 

Sept

Th

Nov. Dec. Jan. Feb.

Month

lendar year

Mar. Apr.

Secondfoot-days

4,594 

571.5 

9.8

-

May

Maximum

1.70O 

117 

.9

-

June

to.i

Minimum

July

69 

1O 

73 

303

1,700 

428 

217 

108 

49

30 

45 

59 

151 

872 

480

10

1 

.1

-

Aug.

84 

36 

22 

26 

21

11 

7.0 

5.4 

4.6 

4.6

2.7 

24 

26 

53 

21

13 

8.6 

7.8 

6.2 

5.4

5.4 

7.0 

1O 

117 

26

8.6 

2.2 

2 

2

1 

1

Mean

306 

18.4 

.33

-

Sept.

0.9 

.8 

.7

.6 

,5

.5 

.4 

.4 

.3 

.3

.3 

.3 

.3 

.3

.2

.2 

.2 

.4 

.3

.1

.2 

.2 

.2 

.3 

.2

.2 

.2 

.1 

.1 

.1

Runoff in 

acre -feet

9,110 

1,13O 

19

10,260

Peak discharge (base 2.40O aec.-ft ). July 5 (about 1O p.m.) 6,270 sec.-ft.; July 21 (5 a.m.) 

5,ISO sec.-ft.; July 30 (7 p.m.) 3,610 sec.-ft.

t Result of discharge measurement.

Hote. Ho gage-height record Aug. 28 to Sept. 12; discharge computed on basis of known upper limit of 

discharge and records for station at Charleston.
402 GILA RIVER BASIN

San Pedro River at Charleston, Ariz.

Location. --Water -stage recorder, lat. 31°37'40", long. 110°10'30", in NE^NE^ sec. 11, T.

 HI S. , R. 21 E., in Spanish land grant of San Juan de las Boquillas y Nogales, at highway bridge a quarter of a mile south of Charleston, lj miles upstream from Charleston 

dam site, 85 miles upstream from Babocomari River, and 29 miles upstream from Benson. 

Datum of gage is 3,954.26 feet above mean sea level, datum of 1929.

Drainage area. 1,220 square miles, of which 696 square miles is in Mexico.

Records available . --January 1904 to August 1906 (January and February 1904, gage heights

 only) , October 1910 to August 1912 (discharge measurements and some gage heights), 

September 1912 to September 1950.

Average discharge. 39 years (1905, 1912-50), 70.5 second- feet.

Extremes. --Maximum discharge during year, 6,070 second-feet July 6 (gage height, 7.48 

feet); minimum, 1.4 second-feet June 18.

1928-50: Maximum discharge, 31,000 second-feet Aug. 13, 1940 (gage height, 13.1 

feet, site and datum then in use), from rating curve extended above 8,500 second-feet 

on basis of slope-area determination at gage height 21.9 feet; minimum, 1.1 second-feet 

July 14, 15, 1948.

Maximum discharge known, about 98,000 second-feet Sept. 28, 1926 (gage height, 21.9 

feet, site and datum then in use, from floodmarks), by slope-area measurement.

Remarks . Records good except those for period of fragmentary gage-height record, which 

are fair. Diversions above station for irrigation.

Revisions (water years). W 1119: 1939{m).

Discharge, In second-feet, Mater year October 1949 to September 195O

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

Oct.

40 

98 

38 

f20 

f!5

f!4 

13 

11 

8.9 

9.5

9.5 

10 

10 

21 

31

22 

21 

16 

13 

12

13 

13 

11 

10 

10

9.5 

9.5 

9.5 

9.5 

8.9 

9.5

Nov.

10 

10 

9.5 

9.5 

9.5

10 

11 

12 

13 

14

14 

14 

14 

13 

12

12

11 

11 

11 

12

13 

13 

13 

13 

12

12 

11 

11 

11

11

Dec.

11 

11 

11 

10

10

1011 11

15 

42

72 

52 

37 

32 

26

25 

23 

23 

23 

23

22 

24 

23 

21 

19

19 

19 

18 

18 

18 

18

Jan.

20 

25 

24

18 

16

16 

17 

21 

21 

21

19 

2O 

21 

23 

23

22 

22 

21 

21 

20

19 

18 

16 

16 

15

15 

14 

14 

14 

15 

14

Feb.

15 

14 

14 

14 

16

16 

16 

16 

16 

15

18 

23 

21 

20 

17

14 

14 

14 

14 

14

14 

13 

13 

11 

11

11 

17 

15

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

uary .

ter year 1949-5O .......................

Mar.

16 

15 

14 

17 

18

17

17 

17 

14 

14

15 

14 

15

14 

13

14 

16 

14 

14 

14

14

14 

13

14 

12

13 

13 

14 

14 

12 

10

Apr.

10 

10 

10 

9.6 

9.6

9.0 

11 

11 

10 

9.6

11 

10 

10 

9.6 

9.0

10 

9.6 

9.0 

9.6 

9.0

9.0 

9.0 

9.0 

8.6 

8.6

9.0 

9.0 

9,0 

8.6 

9.0

Secondfoot -days

546.3 

352.5 

697

24,228.5

581 

426 

444 

285.4 

223. 0 

1,295.8 

9,878.8 

967.8 

150.3

15,847.9

May

8.6 

7.8 

6.2 

5.8 

7.8

8.6 

8.6 

7.4 

7.4 

S.6

8.2 

7.S 

7.O 

6.2 

6.6

6.6 

6.6 

7.0 

7.O 

7.4

7.8 

8.2 

8.6 

7.8 

7.4

6.6 

5.8 

5.8 

5.8 

5.4 

6.6

Maximum

98 

14 

72

1,880

25 

23 

18 

11 

8.6 

543 

1,950 

149 

12

1,950

June

7.4 

7.O 

6.2 

5.8 

5.4

4.8 

4.8 

5.0 

4.5 

4.8

4.2 

4.0 

4.2 

4.0 

3.5

3.5 

3.2 

3.0 

2.8 

3.5

350 

543 

171 

52 

28

18 

14 

11 

9.0 

8.2

July

7.4 

6.2 

5.0 

6.2 

141

1,240 

270 

345 

7O5 

124

112 

61 

49 

81 

25

107 

65 

226 

112 

709

1.95O 

56S 

370 

305 

113

70 

54 

7O 

96 

776 

1,110

Minimum

8.9 

9.5 

10

1.9

14 

11 

10 

8.6 

5.4 

2.8 

5.0 

7.8 

3.8

2.8

Aug.

149 

77 

69 

75 

55

34 

32 

26 

22 

19

41 

IS 

28 

43 

30

2O 

15 

12 

9.6 

9.6

8.6 

7.8 

7.8 

32 

56

17 

16 

13 

9.0 

8.6 

7.8

Mean

17.6 

11.8 

22.5

66.4

18.7 

15.2 

14.3 

9.48 

7.19 

43.1 

318 

31.2 

5.01

43.4

Sept.

6.2 

5.4 

4.8 

5.4 

12

8.6 

5.4 

5.4 

5.4 

5.4

5.4 

4.8 

4.2 

4.O 

4.O

4.O 

4.2 

4.8 

4.5 

4.0

5.0 

5.0 

4.2 

4.0 

3.8

4.0 

4.0 

4.0 

4.2 

4.2

Runoff in 

acre-feet

1,080 

699 

1,380

48,060

1,150 

845 

881 

566 

442 

2,570 

19,590 

1,920 

298

31,420

Peak discharge (base, 3.000 sec.-ft.). July 6 (3:3O a.m.) 6.O7O sec.-ft.; July 21 (9:3O a.m.) 

4,920 sec.-ft.; July 30 (11 p.m.; 3,630 sec.-ft.

f Fragmentary gage-height record; discharge computed from gage-heights based on normal recession 

curve.
OILA RIVER BASIN 403

San Pedro River near Redington, Ariz.

Location (revised) .-Water-stage recorder, lat. 32°22'50" long. 110°26'40", in ra&tWJsec la, '!'. m S., R. 19 E., half a mile upstream from Cochise-Pima county line, 4? 

miles upstream from Redington, and 30 miles downstream from Benson Datum of gage is 

2,940.51 feet from mean sea level, datum of 1929. Prior to July 1950, recording gage at 

site 400 feet downstream at datum 2.98 feet lower.

Drainage area. 2,940 square miles, of which 696 square miles is in Mexico.

Records available. June 1943 to June 1947, July to September 1950. (Also Extremes for 

water years is48-50.)

Extremes. 1947-48: Maximum discharge during water year, 11,500 second-feet Sept. 26

 fgage height, 9.1 feet, from floodmarks) site and datum then in use, from rating curve 

developed prior to June 1947; probably no flow at times during spring and summer.

1948-49- Maximum discharge during water year, 10,000 second-feet, occurred during 

summer of 1949 (gage height, 8.4 feet, from floodmarks) site and datum then in use, 

from rating curve developed prior to June 1947; no flow for many days.

1949-50: Maximum discharge during water year, 8,800 second-feet July 30 (gage 

height, 12.0 feet, present datum), from rating curve extended above 3,500 second-feet 

by logarithmic plotting; no flow for many days. , . , ,..,*+. ion

1943-50: Maximum discharge, 23,000 second-feet Aug. 8, 1947 (gage height, 12.0 

feet site and datum then in use), from rating curve extended above 7,000 second-feet 

by logarithmic plotting; no flow at times in each year.

Maximum discharge known, 90,000 second-feet Sept. 28, 1926 (gage height, 21.5 feet, 

former datum, -from floodmark), computed on basis of peak discharge of same flood on 

San Pedro River at Charleston and on Gila River at Kelvin.

Remarks. Records fair except those for periods of fragmentary or no gage-height record,

 which are poor. Diversions ab'ove station for irrigation.

Discharge, in second-feet, water year October 1949 to September 1950

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. Nov. Dec. Jan. Feb.

Month

00 to 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Apr! 

May

June 

July 

Augu 

Sept

Th

lendar year

e period ................................

Mar. Apr.

Secondfoot-days

16,471.1 

1,463.4 

22.4

-

May

Maximum

2,280 

595

12

-

June

Minimum

July

0 

0 

0 

0

.1

623 

fl,130 

f641 

669 

a60O

a2OO 

alOO 

a70 

a60 

a50

a50 

275 

64 

599 

619

£2,280 

1,390 

1,310 

877 

1,020

155 

53 

62 

44 

1,650 

1,880

0

1.3 

0

-

Aug.

595

141 

86 

82 

64

66 

36 

f!3 

4.1 

6.3

49 

25 

39 

24

16

11 

5.6 

4.4 

3.5 

1.6

1.6 

1.3 

7.4 

118 

f34

f!4

re. 5

f3.8

1.7 

1.3 

1.3

Mean

53l" 

47.2 

.75

-

Sept.

0.7 

.4 

.4 

.4 

.3

1.9 

.4 

.2

.1 

.1

.1 

.1 

.1 

0 

0

0 

0 

0 

f!2

1.3

.9 

.5

1.1 

.9 

.2

.1 

.1 

.1 

0 

0

Runoff in 

acre-feet

32,670 

2,900 

44

35,610

Peak discharge (base. 3.50O sec.-ft.). July 7 (7 p.m.) 3,72o sec.-ft.j July 2O (8:30 p.m.) 7.83O 

sec.-ft.; July 21 (9 P.m.) 3,840 sec.-ft.; July 23 (3 p.m.) 4,470 sec.-ft.j July 30 (11:30 a.m.) 

8,800 sec.-ft.

a No gage-height record; discharge computed on basis of records for station at Charleston.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights or from 

normal recession curve.
404 GILA RIVER BASIN

Queen Creek at Whitlow dam site, near Superior, Ariz.

Location. Water-stage recorder, lat. 33°18'00", long. Ill"17'30", in sec. 36, T. 1 S., R.

 10 K., 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 square miles.

Records available.--January 1896 to August 1899, February 1915 to September 1920 (gage

 heights only February to September 1915), May 1948 to September 1950.

Extremes. 1948: Maximum discharge during period May to September, 676 second-feet July 

21 (gage height, 4.46 feet); no flow most of period.

1948-49: Maximum discharge during water year, 2,630 second-feet July 22 (gage 

height, 6.60 feet); no flow most of year.

1949-50: Maximum discharge during water year, 5,100 second-feet July 18 (gage 

height, 8.40 feet), by slope-area method; no flow most of year.

1915-20, 1948-50: Maximum discharge observed, 10,000 second-feet Aug. 1, 1919 

(gage height, 11.0 feet, datum then in use); no flow at times in each year.

A peak discharge of 13,200 second-feet occurred Aug. 6, 1939 (by slope-area method). 

FloodmarkB indicated a previous stage Lj feet higher.

Remarks. Records fair. Record shows water available at Whitlow dam site. Small diversTons by pumping from ground-water basin above station for irrigation, municipal and 

mining uses.

Discharge, in second-feet, 1948-50 

1948

Day

1

Z

3

4

5

6

7

8

July

O

0

O

0

0

0

0

0

Aug.

0

O

0

0

0

0

0

0

Sept.

O

0

0

O

0

0

0

0

Day

9

10

11

12

13

14

15

16

July

0

0

0

0

0

0

0

0

Aug.

0

0

1

1

0

0

0

0

Sept.

O

0

1

0

0

0

0

0

Day

17

18

19

30

21

22

23

24

July

O

0

0

0

37

0

0

0

Aug.

0

0

0

0

0

0

0

0

Sept.

0

0

0

0

0

0

0

0

Day

25

26

27

28

29

30

31

July

27

0

0

0

0

0

0

Aug.

0

0

0

0

0

0

0

Sept.

0

0

0

0

0

0

-

Peak discharge (base, 500 sec.-ft.). July 21 (7 p.m.) 676 sec.-ft.

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. Nov. Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

O

0

0

0

O

0

0

0

0

0

0

83

4

0

0

0

Jan.

0

0

0

0

0

0

0

0

w

25

0

0

26

16

0

0

0

0

0

0

0

0

6

0

31

28

8

0

0

0

0

Feb. Mar. Apr. May June July

0

0

1

0

0

0

0

00'

f9

fl

0

0

0

0

0

0

0

fl

f38

0

fill

21

0

0

0

0

0

0

0

0

Aug.

0

0

0

0

0

17

0

123

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

4

0

O

0

O

0

0

0

0

0

0

0

0

0

0

0

0

0

-

Peak discharge (base, 500 sec.-ft.). Dee. 27 (5:30 p.m.) 568 sec.-ft.; July 20 (12:30 a.m.) 670 

sec.-ft.; July Z2 (6 p.m.; Z.630 sec.-ft.; July 23 (12:30 p.m.) 8O5 sec.-ft.; Aug. 6 (5:3O p.m.) 

805 sec.-ft.; Aug. 8 (5 p.m.) 1,710 sec.-ft.

f Discharge computed from partly estimate'd gage heights.
GILA RIVER BASIN 405

Discharge} In second-feet, of Queen Creek at Whitlow dam site, near Superior, Ariz., 1949-50 Cent.

1949-50

Day

1

2

3

4

5

6

7

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.

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

4

0

0

0

0

0

0

0

0

0

0

0

Jan. Fab.

0

0

0

0

0

0

0

0

0

0

0

7

0

0

0

0

0

0

0

0

0

0

0

0

0

o.

10

0

_

_

-

Mar. Apr. Hay June July

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

455

0

0

1

61

15

6

0

0

0

0

0

0

0

Aug.

0

0

0

0

194

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

Sept.

Peak discharge (base, 500 sec.-ft.).--July 18 (9:30 a.m.) 5,100 sec.-ft.j July 22 (7 p.m.) 2,690 

sec.-ft.j Aug. 5 (7 p.ra.J 1,79O see.-ft.

Monthly discharge, Jji second-feet, 1948-50

Month

S»vt«"ber. ..................................

The period. ...............................

Deceaber. ...................................

Calendar year .......................

May.........................................

August ~ .

September. ..................................

Water year 1948-49 .......................

December. ...................................

Calendar year 1949 .......................

April.......................................

May.........................................

September. ..................................

Water year 1949-50 .......................

Secondfoot-days

1

-

87

.

4

566

5

484

0

17

0

0

0

0

539

194

0

755

MaxiBun

1

-

83

_

123

4

123

4

123

0

10

0

0

0

0

455

194

0

455

Minimum

0

-

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Mean

.03

-

2.8

.

5 9

.1

1.6

.2

1.3

0

.6

0

0

0

0

17.4

6.3

0

2.1

Runoff in 

acre-feet

2.0

133

173

.

7.9

1,120

9.9

960

0

34

0

0

0

0

1,070

385

0

1,500
406 GILA RIVER BASIN 

Santa Cruz River near Lochiel, Ariz.

Location. --Water-stage recorder, lat. 31°21'30", long. 110°35'40", in SW£ sec. 11, T, 24

miles

. 17 E., unsurveyed, on southern border of Spanish land grant of San 

upstream from international boundary and 2j miles northeast of Loch

Rafael,

hiel.

Drainage area. --83 square miles.

Records available, --January 1949 to September 1950.

Extremes . - -Maximum discharge during year, 4,520 second-feet July 30 (gage height, 6.75 feet) 

Dy si ope -area method; no flow for many days.

1949-50: Maximum discharge, that of July 30, 1950"; no flow at times.

Remarks. --Records. good except those a'bove 50 second-feet and those for periods of fragmentary or no gage-height record, .which ETre poor.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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.

0.2 

.4 

2.2 

1.0 

.5

.2 

.2 

.1 

.1 

.1

0 

0 

0 

.2 

.2

.2 

.1 

.1

.1 

.1

.1 

.1 

.2 

.2 

.2

.1 

.1 

.1 

.1 

.1 

.1

Nov.

0.1 

.1 

.1 

.1 

.1

.2 

.2 

.2 

.2 

.2

.1 

.1 

0 

.1 

O

0 

0 

.1 

.1 

.1

.1 

.1 

.1.

.1 

.1

.1 

.1

.1 

.1 

.1

Dec.

0.1 

.1

0

6 

.1

.1

0

o

.2

.8

.4 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.1 

.2

.2 

.1 

.1 

0 

0

0 

0 

0 

.1 

.1 

0

Jan.

0.1

.3 

.2 

.2 

.2

.2 

.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

Feb.

0.3 

.3 

.4 

.4 

.4

.2 

.2 

.2 

.2 

.2

.2 

.4 

.2

.1 

.1

.1 

.1 

.1 

.1 

.1

.1 

.1

.1 

.1 

.2

.3 

.3 

.3

Month

Oo to 

Nove 

Dece

Ca

Janu 

Febr 

Hare 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949 

ary

1.......................................

ter year 1949-50 .......................

Mar.

0.4 

.4 

.3 

.2

.2

.1 

.1 

.1 

0 

0

0 

0

.1

0 

0

0 

0 

0 

0

.1

0

o

0 

0

.1

.2

.1 .1 .1 .1

0

Apr.

O 

0 

0 

0 

0

0 

0 

0 

0

.1

0 

0 

0 

0

.1 

.1

.2.1 

.1 

.1

.1

.2 

.2 

.2 

.2

!l 

0 

0 

0

May

0.1 

.1 

.1 

.2

.1

0 

.1 

.2 

.2 

0

0

o

0 

0 

0

0

o

0 

0 

0

0 

0 

0

o

0 

0

o

0 

0 

0 

0

Second- Uavlmnm foot-days Maximum

7.4 '2.2 

3.1 .2 

4.1 .8

765.2 214

6.8 .3 

5.8 .4 

2?7 .4 

1.9 .2 

1.1 .2 

0 0 

2,151.4 552 

686.8 245 

92.4 5.3

2,963.5 552

June July

0 

O 

0 

2.1 

.3

.5 

.5 

219 

42 

alO

a7 

a6 

a5 

alo 

a 10

f!7 

123 

f40 

58 

220x

alS 1 

513 

20 

55 

50

56 

a20 

al5 

alO 

552 

f75

Aug.

f26 

16 

19 

21 

245

f59 

a24

a!8 

a!4 

12

11 

41 

8.2 

6.8 

8.6

7.7 

8.2 

16 

9.7 

alO

a!5 

alS 

alO 

9.7 

9.7

9.1 

8.6 

8.2 

7.2 

6.8 

6.3

1 

Minimum Mean

0 0.24 

* 0 .10 

0 .13

0 2.10

.1 .22 

.1 .21 

0 .09 

0 .06 

0 .04 

0 0 

0 69.4 

6.3 22.2 

1.7 3.08

0 8.12

Sept.

5.3 

4.1 

4.1 

4.4 

4.1

4.1 

3.8 

3.2 

2.9 

2.9

2.9 

3.2 

3.2 

2.9 

3.5

3.2 

3.8 

3.5 

2,9 

2.9

2.9 

2.3 

2.0 

2.6 

2.6

2.0 

1.7 

1.7 

2.0 

1.7

Runoff in 

acre-feet

15 

6.1 

8.1

1,520

13 

12 

5.4 

3.8 

2.2 

0 

4,270 

1,360 

183.

5,880

Peak discharge (baae. l.OQO gee.-ft.). July 8 (5:30 p.m.) 4,300 sec.-ft.j July 20 (l a.m.) 2,240 

sec.-ft.j July 22 (3 a.m.) 5V79O sec.-ft.} July 30 (5 p.m.) 4,520 see.-ft.J Aug. 5 (7:30 p.m.) 4,490 

seo.-ft.

a Ho gage-height record} discharge computed on basis of records for Santa Cruz River near Hogalea 

and Sonolta Creek near Patagonia.

f Fragmentary gage-height record} discharge computed from partly estimated gage heights.
GILA RIVER BASIN 407

Santa Cruz River near Nogales, Ariz.

Location.--Water-stage recorder,, lat. 31°20'40", long. 110 0 51'05", in Nw~£ sec. 18, T. 24 

s., K. 15 E., unsurveyed, in Spanish land grant of Buena Vista, three-quarters of a 

mile downstream from international boundary and 5j miles east of Nogales.

Drainage area.--542 square miles, of which 357 square miles is in Mexico.

Records available. May 1930 to December 1933, July 1935 to September 1950. March to 

November 1907 and April 1909 to December 1912 (discharge measurements and fragmentary 

gage-height record), January 1913 to June 1920, April 1921 to June 1922 at or within 

three-quarters of a mile of Yerba Buena dam site, 5^ miles downstream.

Average discharge. 18 years (1930-33, 1935-50), 18.5 second-feet.

Extremes. Maximum discharge during year, 7,210 second-feet July 20 (gage height, 11.16 

feet); minimum dally discharge, 0.6 second-foot June 14-16, Sept. 29, 30.

1930-50: Maximum discharge, 12,000 second-feet Aug. 31, 1935 (gage height, 12.3 

feet), on basis of slope-area determinations at gage heights 9.5 and 10.9 feet; no 

flow for several days or parts of days of most years.

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

wnich are poor. Many small diversions above station for irrigation.

Revisions (water years),--W 959: '1935(M).

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

5.6 

11 

7.2 

4.7 

4..2

4.2 

4.0 

4.O 

3.9 

4.0

4.0 

3.9 

3.9 

3.9 

4.0

4.0 

5.5 

4.0 

3.6 

3.6

3.6 

3.6 

3.4 

3.4 

3.4

3.4 

3.3 

3.3 

3.3 

3.4 

3.4

Nov.

3.4

3.4 

3.3 3.4- 

3.4

3.4 

3.4 

3.6 

3.7 

3.9

4.0 

4.O 

4.0 

3.9 

3.9

3.9

3.9 

3.'9 

3.9 

3.9

4.1 

4.2 

4.2 

4. 

4.

4. 

4.

4. 

4. 

4.5

Dec.

4.4 

4.2 

4.2 

4.4 

4.4

4.5 

4.5 

4.5 

5.0 

11

11 

7 

5 

5 

5

5 

5 

5 

5 

5

5 

5 

5 

5 

4

4 

4 

4

5 

5 

5

Jan.

5 

5 

5 

5 

5

5 

5 

5 

5.4

5.4 

5.4 

5.8

5.2

5.2 

.0 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.7

.4 

.4 

.4 

.4 

.4 

4.5

Feb.

4.5 

4.5 

4.5 

4.5 

4.5

4.4 

4.5 

4.4 

4.4

5.4 

6.4 

4.8

4.5

4.4 

4.5 

4.4 

4.4 

4.2

4.2 

4.2 

4.2 

4'. 2 

4.2

4.5 

4.7 

4.2

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194S

ter year 1949-50 .......................

Mar.

4.2 

4.5 

4.4 

4.2 

4.5

4.7 

4.4 

4.2 

3.6

4.0 

4.0 

4.4

4.5

4.5 

4.5 

4.5 

4.4 

4.4

4.2 

4.4 

4.2 

4.7 

4.5

4.5 

4.4 

4.3 

4.1 

4,0 

3.9

Apr.

Secondfoot-days

130.7 

117.6 

160.1

7,353.5

153.0 

126.4 

133.7 

82.2 

46.1 

45.3 

7,871.5 

1,215.7 

31.9

10,114.2

Peak discharge (base, 2.0OO sec, -ft.). July 7 (2:30 p

3.7 

3.9 

3.7 

3.4 

3.4

3.4 

3.3 

3.4 

3.4

2.8 

2.5 

2.7

2.8

2.8 

2.5 

2.3 

2.4 

2.3

2.2 

2.4 

2.3 

2.2

2.1

2.0 

2.0 

2.0 

2.1 

2.0

May

2.0 

1.9 

1.9 

2.0 

2.0

1.9 

1.7 

1.7 

1.6

1.6 

1.6 

1.5

1.5

1.5 

1.5 

1.4 

1.3 

1.3

1.3 

1.3 

1.2 

1.2 

1.2

1.2 

1.2 

1.1

1.1 

1.1

1.1

Maximum

11

4.5 

11

916

5.8 

6.4 

4.7 

3.9 

2.0 

14 

1,470 

273 

1.8

1,470 *

June

1.2 

1.1 

1.1 

.9 

.9

.9 

.9 

.8 

.8 

.8

.8 

.8 

.7 

.6

.6

.6 

.7 

.7 

.7 

.7

.7 

14 

6.5 

1.2

1.2

1.1 

1.1 

1.1 

1.1 

l.O

July

1, 

1,

Minimum

3.3 

3.3 

4

.4

4.4 

4.2 

3.6 

2.0 

1.1 

.6 

1.0 

1.5 

.6

.6

1.0 

1.1 

1.1 

5.3 

1.0

121 

255 

99 

185 

244

38 

20 

10 

27 

f45

f!5 

616 

364 

107 

963

584 

470 

416 

99 

301

380 

126 

87 

72 

188 

030

Aug.

139 

67 

41 

31 

29

273 

75 

47 

33 

28

28 

72 

67 

74 

29

23 

18 

14 

10 

9.8

36 

34 

f!2 

7.9 

4.6

3.5 

2.7 

2.4 

1.8 

1.5 

1.5

Sept.

1.0 

1.0 

1.3 

1.0

1.3

1.8 

1.3 

1.3 

1.0 

1.0

.7 

.7 

.7 

.9 

.7

.7 

1.5 

1.8 

1.5 

1.5

1.3 

1.3 

1.3 

1.0 

1.0

.7 

.7 

.7 

.6 

.6

Moan Runoff In "ean acre-feet

4.22 . 259 

3.92 233 

5.16 318

20.1 14,590

4.94 , 303 

4.51 251 

4.31 265 

2.74 163 

1.49 91 

1.51 90 

254 15.61O 

39.2 2,410 

1.06 63

27.7 20,060

,m. ) 2.21O sec. -ft.; July 17 (8 p.m.) 5,890

4,060 sec.-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.

Note. No gage-height record Dec. 13 to Jan. 8, Mar. 27-3O, July 12, 13; discharge computed on 

basis of recorded range In stage and weather records.

207364 O - 52 - 27
408 GILA RIVER BASIN

Santa Cruz River at Tucson, Arlz.

Location. --Mater-stage recorder, lat. 32°13'15", long. 110°58'50", in NE^NE^ sec. 14 T

gage ls 2 ' 327 ' 16 feei

Drainage area. 2.190 square miles, of which 403 square miles is in Mexico.

Records available. October 1905 to September 1950. Prior to October 1917, daily dlscnarge record fragmentary; monthly discharge frequently estimated- from information 

available to complete period.

Average discharge. -45 years (1905-50), 21.8 second-feet; median of yearly mean discharges , lb second-feet .

Extremes. --Maximum discharge during year, 9,490 second-feet July 30 (gage height, 8.8 

Feet), from rating curve extended above 4,000 second-feet by logarithmic plotting; 

no flow during greater part of year.

1905-50: Maximum discharge, about 15,000 second-feet Dec. 23, 1914, from rating 

curve extended above 9,000 second-feet; no flow during greater part of each year.

Remarks. --Re cords good except those for periods of no gage-height record, which are poor. 

Large diversions above station for irrigation and small diversions for municipal supply 

and mining, mostly by pumping from ground-water basin.

Revisions (water years). --W 859; 1915(M).

Discharge, In second-feet, water year October 1949 to September 1950

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

Oct.

0 

0 

0 

0 

0

3 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

o

0 

0 

0 

0

Nov. Dec. Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apri 

May.

June 

July 

Augu 

Sept

Wa

mber. ...................................

lendar year 1949 

ary

u&x*y . *

ter year 1949-50 .......................

Peak discharge (base, 1.700 sec. -ft.). Ju

sec. -ft.; July 21 (2 a.m.) 4,910 sec. -ft.; J 

9,490 sec. -ft.; Aug. 11 (11 p.m.) 3,770 sec. 

a No gage-height record; discharge compute

Mar. Apr'. May

^

Second- Ma »i m,, m foot-days "a*1"1" 

3 3 

0 0 

0 0

5,279 1,190

0 0 

0 0 

0 0 

0 0 

0 0 

169 126 

13,319.1 3,120 

940.4 326 

130.6 108

14,562.1 3,120

ly 8 (8 p.m.) 1,800 sec. 

uly 22 (4:30 a.m.) 7,990 

-ft.; Aug. 12 (11:30 p.n 

} on basis of field estl

June

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

22 

126 

21 

0 

0

0 

0 

0 

0 

0

Minimum

July

0 

0 

0 

33 

5

70 

41 

202 

156 

114

alO 

a£ 

a.l

5 

71

122 

257 

1,020 

650 

70

2,050 

3,120 

1,330 

270

1

15 

14 

al 

0 

2,080 

1,610

Aug.

97 

al 

.2 

.2 

0

0 

15 

12 

1 

0

245 

213 

326 

2 

0

0 

0 

0 

0 

0

0 

0 

27 

1 

0

0 

0 

0 

0 

0 

0

Sept.

0 

0 

0 

0 

0

.6 

108 

22 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Mean 'Run°ff in Mean acre-feet

0 0.1 6.O 

00 0 

00 0

O 14.5 10,460

00 0 

00 O 

00 0 

00 0 

00 0 

0 5.6 335 

0 430 26.42O 

0 30.3 1,870 

0 4.35 259

0 39.9 28,89O

-ft.; July 18 (11:30 p.m.) 4.57O 

sec. -ft.; July 30 (7 p.m.) 

.) 2,340 sec. -ft. 

mates.
GILA RIVER BASIN 409

Santa Cruz River at Cortaro, Arlz.

Location. Water-stage recorder, lat. 32°21 I 10", long. lirOSMS", In Stf&SWi sec. 26, T. 12 

STTTT. 12 E., half a mile southwest of Cortaro, 3 miles downstream from Canada del Oro 

and 4 miles downstream from Rllllto Creek. Datum of gage Is 2,137.13 feet above mean ' 

sea level (Arizona Highway Department bench mark).

Drainage area. 3,480 square miles.

Records available July to September 1950. October 1939 to June 1947 at site 4j miles 

downstream, published as Santa Cruz River at Rillito.

Extremes --Maximum discharge during period July to September 1950, 12,900 second-feet 

July30 (gage height, 9.1 feet), from rating curve extended above 7,500 second-feet by 

logaritlanic plotting; no flow for many days. Maximum discharge for period is also 

maximum for water year 1950.

a1 ?39 "47 ' 1950: Maxlmum discharge, 17,000 second-feet Aug. 14, 1940 (gage height 

9.9 feet, 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. Many diversions above station for irrigation.

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5-

6 

7 

8 

9 

10

11 

12 

13 

14

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

3O 

31

Oct. Nov. Dec. Jan. Feb.

Month

Octo 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl

June 

July 

Augu 

Sept

Tl

lendar year

8-31 ...................................

le period .......... .....................

Mar. Apr.

Secondfoot-days

15,985 

959.8 

218.1

-

Peak discharge (tape. 2,700 sec. -ft .) .--July 19 (1:30

5,920 sec. -ft.; July Z2 (7 a.m.) 8,280 sec. -ft.; July 24 

p.m.) 12,900 sec. -ft.; Aug. 12 (2 a.m.) 3,640 sec. -ft. 

f Fragmentary gage-height record; discharge computed ]

May

Maximum

4,000 

422

116

-

a.m.) 4,040 

(1:30 a.m.

rom partly

June

Minimum

July

flSl 

83 

131

5

4 

2 

2 

12

267 

250 

676 

1,100 

15

1,890 

3,230 

1,290 

680 

5

1 

1 

O 

0 

4,000 

2,190

Aug.

f!06 

5

1 

.5 

1

.9 

O

o 

o

0

f2 

f422 

386

1 

0

0 

0 

0 

0 

0

0 

.4 

16

18 

0

0 

O

0

o

0 

0

Sept.

0 

0 

0 

0

o

0 

98 

116 

.1 

2

2 

O 

O

0

o 

o

0 

0

o

0

o

0 

0 

0

o 

o

0 

0 

0 

0

...__ Runoff In 

Mean acre -feet

0 666 31,710 

0 31.0 1,900 

0 7.27 433

34,040

sec. -ft.; July 21 (4:3o a.m.) 

6,130 sec. -ft.; July 3O (7:3O

estimated gage heights.
-410 GIIA RIVER BASIN

Santa Cruz River near Laveen, Ariz.

Location. Water-stage recorder, lat. 33°13', long. 112°10', in NE^NE^ sec. 29, T. 2 S., 

RT~2~E., on Gila River Indian Reservation, at highway bridge 3 miles south of Komatka, 

9 miles upstream from mouth, and 9^ miles south of Laveen. Datum of gage is 1,020.86 

feet above mean sea level, datum of 1929, Phoenix-Picacho supplementary adjustment of 

1949.

Drainage area. 8,970 square miles.

Records available.--January 1940 to September 1946, December 1947 to September 1950.

Extremes.--Maximum discharge during year, 685 second-feet Aug. 11 (gage height, 10.20 

reet); no flow for many days.

1940-46. 1947-50: Maximum discharge, 5,020 second-feet Sept. 21, 1946 (gage height, 

16.70 feet); no flow for many days in 1950 and negligible seepage flow amounting to 

less than 0.05 second-foot in 1940, 1948, 1949.

Remarks. Records good above 5 second-feet, fair below. Many diversions above station, 

mostly by pumping from the underground basin, for irrigation and municipal uses.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

4' 3 

5

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

Oct.

O.I 

.3 

.9

1 

1

1 

.5 

.1 

.1 

.1

.1 

.1 

.1 

.7

1

.8 

.3 

.4 

.5 

.6

.9 

.5

.1 

.1 

.1

.1 

O 

0 

.1 

.1 

.1

Nov.

0.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.2 

.2 

..2 

.2

.1

.1 

.1 

.1 

.2 

.2

.2 

.1 

.1 

.2 

.3

" .3 

.3 

.4 

.4 

.5

Dec.

0.3 

.3 

.3 

.3 

.3

.3 

.3 

.4 

.4

12

3 

2 

.7 

.4 

.3

.3 

.3 

.2 

.4

.6

.5 

.5 

.5 

.6 

.5

.5 

.5 

.5 

.5 

.5 

.5

Jan.

0.6 

.6 

.8

1 

.7

.7 

.7 

2

1 

1

1

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

2 

3

2 

3 

4 

3 

3 

3

Feb.

2 

2

2 

2 

3

3 

3 

3 

3 

3

3 

42 

4 

2 

2

2 

2 

3 

2 

2

2 

2 

2 

2

Z

3 

4 

4

Month

ooto 

Nove 

Dece

Ca

Janu 

Pebr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194C

ter year 1949-50 .......................

Mar.

3 

3 

2 

2 

2

3 

3 

4 

4 

3

3 

3 

3 

3 

5

3 

2

3 

2 

2

3 

3 

4 

3 

3

3 

2 

2 

2 

2 

4

Apr.

4 

3 

3 

3 

3

3 

2 

2 

2 

3

3 

3 

3 

4 

2

2

3 

3 

2 

3

3 

3

1 

1 

1

1 

1 

2 

2 

2

Secondroot-days

11.8 

5.4 

28.7

5,270.7

45.1 

111 

89 

73 

22.1 

11.7 

508.2 

1,366 

83.3

2,355.3

May

1 

.6 

.6 

.4 

.2

1 

1 

2 

1 

.7

4 

4

4 

6 

6

4 

4 

4 

4 

4

.7 

1 

1 

2 

1

1 

.7 

.7 

.4 

.4 

.3

Maximum

1 

.5 

12

1,280

4

42 

5 

4 

2 

3 

194 

320 

19

320

June

0.3 

.3

.6 

.7 

.6

.4

.3 

.3 

.4 

3

2 

1 

.6 

.3

.1

.1 

.1 

0 

O 

.2

.1 

.2 

.1 

0 

0

O 

O 

0 

O 

0

July

0 

O 

O

o 

o

0 

0 

8 

5 

2

.2 

0 

0 

0 

0

0 

0 

O 

0 

0

0 

10 

3 

5 

3

111 

194 

58 

21 

8 

80

Minimum

0 

.1 

.2

O

.6 

2 

2 

1 

.2 

O 

0

1

0

o

Aug.

48 

45 

320 

215 

53

29 

59 

27 

7 

2

153 

141 

54 

31 

40

37 

27 

17 

12 

8

5 

6 

6 

5 

4

4 

3 

3

2

2

Mean

O.38

.18 

.93

14.4

1.45 

4.0 

2.9 

2.4 

.71 

.39 

16.4 

44.1 

2,78

6.45

Se'pt.

0.9 

1 

2 

2 

2

3 

3 

3 

3

4

3 

3 

4 

3 

4

5 

5

4 

19 

7

.9 

.3 

.3 

.1 

0

O 

O

0 .1

Runoff In 

acre-feet

23 

11 

57

1O,46O

89 

220 

177 

145 

44 

23 

1,010 

2,710 

165

4,670

Peak discharge (base. 580 see.-ft.).--Aug. 3 (8 p.m.) 428 sec.-ft.; Aug. 11 (7 p.m.) 685 sec.-ft.
GIIA RIVER BASIN 411

Sonoita Creek near Patagonia, Ariz.

Location. Water-stage recorder, lat. 31°30'00", long. 110°49'00", in SE&SW^ sec. 21, T. 

STTTrr, R. 15 E., 5 miles downstream from Patagonia. Datum of gage is 3,818.61 feet 

above mean sea level, datum of 1929.

Drainage area. 210 square miles.

Records available. June 1930 to December 1933, July 1935 to September 1950.

Average discharge. 18 years (1930-33, 1935-50), 7.08 second-feet.

Extremes. Maximum discharge during year, 7,300 second-feet July 30 (gage height, 9.80 

feetj; no flow for many days.

1930-50: Maximum discharge, 14,000 second-feet Sept. 30, 1946 (gage height, 13.0 

feet), by slope-area method; no flow for all or parts of several days during summer 

of -each year'since 1940 when station was moved to present site.

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

which are poor. Several small diversions above station for irrigation and mining.

Revisions (water years). W 1059: 1934(M).

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

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

6 

4 

3 

3

3 

3 

3 

3 

3

2 

2 

2 

2 

2

2 

3 

3 

2.4 

2.6

2.6 

2.4 

2.4 

2.2 

2.0

1.8 

2.0 

1.8 

2.0 

2.0 

2.0

Nov.

2.0 

2.0 

2.0 

2.0 

2.0

2.2 

2.2 

2.4 

2.6 

2.6

3.1 

2.9 

2.6 

2.4 

2.4

2.2 

2.2 

2.2 

2.2 

2.0

2.0 

2.0 

2.0 

2.2 

2.2

2.2 

2.2 

2.4 

2.4 

2.4

Dec.

2.4 

2.4 

2.4 

2.4 

2.4

2.4 

2.4 

2.4 

2.9 

6.3

4.2 

2.4 

2.4 

2.4 

2.4

2.6 

2.9 

2.9 

2.9 

2.9

2.9 

2.9 

2.9 

2.6 

2.6

2.6 

2.6 

2.6 

2.9 

2.9 

2.6

Jan.

2.9 

3.3 

3.8 

3.1 

3.1

2.9 

2.9 

2.9 

2.9 

3.1

3.1 

3.1 

3.1 

2.9 

2.9

2.9 

2.9 

2.9 

2.9 

2.9

2.9 

2.9 

2.9 

2.9

3.1

3.1 

3.1 

3.1 

3.1 

3.3 

3.3

Feb.

3.1 

3.1 

3.1 

2.9 

2.9

2.9 

2.9 

2.9 

2.9 

2.9

3.3 

3.8 

3.3 

3.3 

3.3

3.3 

3.3 

3.3 

3.3 

3.3

3.3 

3.3 

3.3 

3.8 

3.3

3.3 

3.8 

3.8

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

3.8 

3.8 

3.8 

3.3 

3.3

3.3 

3.3 

3.8 

3.8 

4.2

4.2 

3:8 

3.3 

3.3 

3.8

3.8 

3.1 

3.1 

2.9 

2.9

2.9 

3.1 

2.4 

2.2 

2.4

3.3 

2.9 

2.2 

2.4 

2.6 

2.4

Apr.

2.2 

2.2 

2.2 

2.0 

2.2

2.0 

2.2 

2.2 

2.2 

2.2

2.0 

2.0 

2.2 

2.4 

2.4

2.4 

2.2 

2.0 

2.0 

1.8

1.8 

1.8 

2.0 

1.8

1.8

1.0 

1.0 

1.8 

2.0 

2.0

Secondfoot-days

80.2 

68.2 

86.5

2,675.8

94.2 

91.0 

99.4 

60.0 

34.4 

1.8 

3,483.6 

349.7 

49.0

4,498.0

Peak discharge (base, 1.2OO sec. -ft.). July 17 (8 p.m

May

1.5 

1.3 

1.1 

1.8 

2.2

2.2 

2.0 

1.5 

1.5 

1.5

1.5 

1.8 

1.5 

1.5 

1.3

.9 

.9 

1.0 

.9 

1.0

.9 

.9 

.9 

.8 

.4

.3 

.3 

.3 

.3

.2 

.2

Maximum

6 

3.1

6.3

910

3.8 

3.8 

4.2 

2.4 

2.2 

.2 

1,480 

66 

10

1,480

June

1"

.1

0 

0

O

o 

o

0 

0

0 

0 

0 

0

o

0

o 

o

0 

0

July

O 

O 

O 

fl.7 

1.3

5.6 

26 

2.2 

45 

10

3.3 

1.5 

1.1 

1.8 

1.1

39 

180 

298 

f35 

204

85 

441 

167 

51 

63

47 

4O 

f24 

f!8 

1,48C 

211

Minimum

1.8 

2.0 

2.4

O

2.9 

2.9 

2.2 

l.O 

.2 

0 

0 

2.3 

.7

0

Aug.

47 

20 

19 

14 

14

17 

11 

8.7 

6.0 

66

21 

27 

7.9 

6.0 

5.5

5.2 

4.9 

4.6 

4.4 

4.2

4.2 

4.2 

4.2 

3.8 

3.6

3.4 

2.8 

2.8 

2.5 

2.3 

2.5

Mean

2.59 

2.27 

2.79

7.33

3.04 

3.25 

3.21

2.00 

1.11 

.06 

112 

11.3 

 1.63

12.3

.) 1,80O sec. -ft.; July 18 (2:3O

Sept.

2.5 

2.1 

2.0 

2.2 

2.0

10 

2.1 

1.3 

1.2 

1.1

.8 

.7 

.8 

1.0 

1.1

1.1 

1.6 

1.4 

1.3

1.2

1.2 

1.1 

1.1 

1.0 

1.1

1.0 

1.2 

1.2 

1.3 

1.3

Runoff in 

acre-feet

159 

135 

172

5,300

187 

180 

197 

119 

68 

3.6 

6,910 

694 

97

8,920

p.m.) 2,620

.. .. , .. .. , .-. 

p.m.) 7.3OO sec.-ft.; Aug. 10 (6 p.m.) 1,400 sec.-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.

Note. No gage-height record Oct. 1-18, June 1-13; discharge computed on basis of recorded range 

In stage and weather records.
412 GIIA RIVER BASIN

Tucson Arroyo at Vine Avenue, Tucson, Ariz.

Location.--Water-stage recorder and concrete low-water control, lat. 32°13'05", long. 

 HOW00", in SWijNEi sec. 18, T. 14 S., R. 14 E., at Vine Avenue, a quarter of a mile

downstream from Arroyo Chico and 2-£ miles upstream from mouth. Datum of gage is 2,411.9

feet above mean sea level (city of Tucson bench mark).

Drainage area. 21.5 square miles.

Records available. June 1944 to September 1950.

Extremes.--Maximum discharge during year, 1,160 second-feet July 30 (gage height, 7.40 feet); 

no flow during greater part of year.

1944-50: Maximum discharge, 4,100 second-feet July 24, 1948 {gage height, 9.9 feet), 

by slope-area method; no flow during greater part of each year.

Remarks. Records good.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0 

0 

0 

0

.1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov. Dec.

0 

o

0 

0 

0

0 

0 

0

.1

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Jan. Feb.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

3.7 

4.8 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

h. ......................................

ter year 1949-50 .......................

Mar. Apr. May

fo^ys «axi0.1 0.1 

0 0

.1 .1

123.8 44

0 I" 0 

8.5 4.8 

0 0 

0 0 

0 0 

4.6 3.8 

227.8 165 

23.0 22 

28.8 26

292.9 165

June

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.6 

3.8 

.2 

O

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

.2

0 

0 

0

0 

0 

0

.1

0

0 

0 

0 

0 

3.5

19 

40 

0 

0 

0

0 

0 

0 

0 

165 

0

Aug.

0 

0 

0 

o 

0

0 

0 

0 

0 

0

0 

22 

1.0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Minimum Mean

0 0.003 

0 0 

0 .003

0 .34

0 0 

0 .30 

0 0 

0 0 

0 0 

0 .15 

0 7.34 

0 .74 

0 .96

0 .80

Peak discharge (base, 150 aec.-ft .) . July 22 (12:30 p.m.) 312 sec. -ft.; July 30 (12 m.

Sept.

0 

0 

0 

0 

0

0 

26 

2.8

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Runoff in 

acre-feet

0.2 

0 

.2

245

0 

17 

0 

0 

0 

9.1 

452 

46 

57

582

) 1,160 see

ft.j Aug. 12 (6:30 p.m.) 174 sec.-ft.; Sept. 7 (8 p.m.) 300 see.-ft.
GILA RIVER BASIN 413

Rillito Creek near Tucson, Ariz.

Location.--Water-stage recorder, lat. 32°17'40", long. 110°59'05", in SW£SE£ sec. 14, T. 

 13 S. , R. 13 E., 1,100 feet downstream from Pima Canyon, 1,800 feet downstream from

bridge on U. S. Highway 89, 4$ miles upstream from mouth, and 5 miles north of Tucson.

Datum of gage is 2,288.23 feet above mean sea level, datum of 1929, supplementary

adjustment of 1949.

Drainage area. 916 square miles.

Records available.--October 1908 to September 1950 (prior to October 1917, monthly discharge 

only).

Average discharge.--42 years (1908-50), 20.5 second-feet; median of yearly mean discharges, 

8.5 second-feet.

Extremes.--Maximum discharge during year, 9,490 second-feet July 30; no flow during greater 

part of year.

1911-50: Maximum discharge, 28,000 second-feet Dec. 23, 1914, estimated by the 

Arizona Agricultural Experiment Station in 1941 on basis of their original flood record; 

no flow during greater part of each year.

A discharge of 24,000 second-feet occurred Sept. 23, 1929.

Remarks.--Records good except that for day of fragmentary gage-height record, which is fair. 

Several small diversions above station for irrigation and for municipal and domestic 

supply, mostly by pumping from ground water.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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. Feb.

Month

Octo 

Nove 

Dece

Ca

janu 

Febr 

Marc 

Aprl

June 

July 

Augu 

Sept

Wa

lendar year 1949

h. ......................................

ter year 1949-5CT .......................

Mar. Apr.

Secondfoot-days

0 

0 

0

1,208.0

0 

0 

0 

0 

0 

292 

3,197.4 

170.9 

0

3,660.3

Peak discharge (base, l.OOO sec. -ft.), June 23 (Z a.m

May

Maximum

O 

0 

o

316

0

o

0 

0 

0 

218 

2,010 

165 

0

z; oio

.) 1,510 sec

June

0

0

o

0 

0

o

0

0 

0 

0

o

0 

0 

0 

0

0 

0 

0

0 

0

o

f74 

218 

0 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

34 

26 

30 

9.1

0

O

o

0 

0

.2 

0 

112 

136 

22

156 

102 

318 

188 

7.1

0 

0 

0 

0 

2,010 

47

Aug.

0 

0

O 

0 

0

o

1.6 

0 

0 

0

0 

165 

1.7 

O 

0

o

0 

0 

0 

0

0 

0 

1.6 

1.0 

0

0 

0 

0 

0s

Minimum Mean

0 0 

0 0 

0 0

0 3.31

0 0 

0 0 

0 0 

0 0 

0 0 

0 9.7 

0 103 

0 5.51 

0 0

0 10.0

Sept.

Runoff inacre-feet

0 

0 

0

2,390

0 

0 

0 

0 

0 

579 

6,340 

339 

0

7,260

.-.ft.; July 19 (2:30 a.m.) 1,110

9,490 sec.-ft.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
414 GILA RIVER BASIN

Sablno Creek near Tucson, Ariz.

Location.--Water-stage recorder and concrete control, lat. 32°19 I 00", long. 110°48 I 35", 

In SEijNE^ sec. 9, T. 13 S., R. 15 E., half a mile north of Coronado National Forest 

boundary and 12 miles northeast of Tucson.

Drainage area.--35.0 square miles.

Records available.--July 1904 to June 1912 (monthly discharge only), June 1932 to September 1951).

Average discharge.--25 years (1904-11, 1932-50), 11.9 second-feet.

Extremes. Maximum discharge during year, 2,260 second-feet July 7 (gage height, 6.50 

feet); no flow June 4-21.

1932-50: Maximum discharge, 4,100 second-feet Mar. 3, 1938 (gage height, 7.13 

feet), from rating curve for spillway of dam 1,000 feet downstream, extended above 

2,500 second-feet by logarithmic plotting; no flow at times during most years.

Remarks.--Records excellent except those above 50 second-feet, which are good. No diversions above station except for domestic supply. Slight regulation since 1933 by 

several small dams constructed to provide recreational lakes.

Discharge, In second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0.4 

.3 

.2 

.2

.6

.6 

.4 

.2 

.2

.1

.1 

.1 

.08 

.08 

.08

.08 

.1 

.1 

.1 

.2

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.08 

.08 

.06

Nov.

0.06 

.08 

.08 

.04 

.04

.03 

.03 

.03 

.03 

.04

.04 

.04 

.04 

.04 

.04

.04 

.04 

.04 

.04 

.04

.04 

.03 

.03 

.03 

.04

.03 

.03 

.03 

.03 

.03

Dec.

O.O5 

.03 

.03 

.03 

.03

.03 

.02 

.02 

.03 

.03

.02 

.03 

.03 

.03 

.02

.03 

.04 

.03 

.03 

.04

.04 

.1 

.6 

.6 

.6

'.8 

1.0 

1.0 

.9 

.8 

.8

Jan.

0.7 

18 

31 

9.7 

5.2

3.5 

2.7 

2.2 

2.1 

1.9

1.8 

1.6 

1.9 

1.9 

1.5

1.4 

1.4 

1.3 

1.4 

1.9

2.1 

 2.2 

2.4 

2.4 

2.2

2.2 

2.1 

2.1 

2.1 

1.9 

1.8

Feb.

1.5 

1.4 

1.3 

1.2 

1.0

1.0 

.9 

.9 

.8 

.8

1.3 

2.4 

1.5 

1.3 

1.2

1.6 

2.4 

2.4 

2.2

2.1

1.9

1.8 

1.8 

1.6 

1.5

1.5 

32 

18

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 194£ .......................

ter year 1949-50 .......................

Mar.

9.8 

7.6 

6,6 

5.2 

4.2

3.3 

2.9 

2.6 

2.4 

2.2

2.1 

1.9 

1.8 

1.8 

1.6

1.5 

1.4 

1.3 

1.2 

1.0

.9 

.8 

.8 

.7 

,7

.9 

l.O 

.8 

1.0 

2.2 

2.4

Apr.

1.9 

1.5 

1.3 

1.0 

.8

.8 

.6 

.6 

.6 

.5

.5 

.5 

.3 

.3 

.2

.2 

.2 

.2 

.1 

.1

.06 

.04 

.04 

.03 

.03

.03 

.03 

.03 

.03 

.03

Secondfoot-days

5.24 

1.18 

7.82

4,056.22

116.6 

89.3 

74.6 

12.55 

.64 

2.63 

427.36 

98.7 

3.47

840.09

May

W CUNNWN r-tHNOJCMWCUN to[O 

oooooo Ooooo ooooo 

o

Maximum

0.6 

.08 

1.0

344

31 

32 

9.8 

1.9 

.03 

2.4 

175 

30 

.6

175

June

0.01 

.01 

.01 

0 

0

O 

0 

0 

0 

0

0 

0 

O 

0 

O

0 

0 

0 

0 

0

0 

2.4 

.08 

.03 

.02

.02 

.02 

.01 

.01 

.01

July

0.01 

.01 

.01 

.3

.1

.03 

175 

46 

18 

22

7.6 

4.4 

2.7 

2.2 

1.9

1.5 

1.6 

1.7 

14 

4.7

21 

18 

12 

6.6 

3.9

2.9 

2.9 

2.4 

1.9 

25 

27

Minimum

0.06 

.03 

.02

0

.7 

.8 

.7 

.03 

.01 

0 

.01 

.3 

.02

0

Aug.

9.0 

4.7 

3.5 

3.9 

2.9

2.4 

2.1 

1.6 

1.3 

1.2

2.5 

4.8 

2.2 

1.3 

1.0

.9 

1.2 

.9 

.7 

.5

.5 

.3 

30 

12 

2.7

1.3 

1.0 

.7 

.5 

.5 

.6

Mean

0.169 

.039 

.252

11.1

3.76 

3.19 

2.41 

.418 

.021 

.088 

13.8 

3.18 

.116

2.30

Sept.

0.2 

.1 

.06 

.06 

.08

.1 

.08 

.08 

.06 

.6

.6 

.4 

.3 

.2 

.1

.06 

.04 

.04 

.04 

.04

.03 

.03 

.03 

.02 

.02

.02 

.02 

.02 

.02 

.02

Runoff In 

acre-feet

10 

 2.3 

16

8,050

231 

177 

148 

25 

1.3 

5.2 

848 

196 

6.9

1,670

Peak discharge (base, 150 sec.-ft.).--July 7 (4 p.m.) 2,260 sec.-ft. ; Aug. 23 (8 p.m.) 440 see.-ft.
GILA RIVER BASIN 415

Salt River near Chrysotile, Ariz.

Location.--Water-stage recorder, lat. 33°48', long. 110°30', in sec. 5, T. 5 N., R. 18 E.,

 unsurveyed, on San Carlos Indian Reservation, 1,200 feet upstream from bridge on D. S. 

Highway 60, 5^ miles northeast of Chrysotile, 8 miles upstream from Cibecue Creek, and 

33 miles downstream from confluence of Black and White Rivers. Datum of gage is 3,354.5r 

feet above mean sea level, datum of 1929.

Drainage area.--2,830 square miles.

Records available.--September 1924 to September 1950.

Average discharge.--26 years, 622 second-feet.

Extremes.--Maximum discharge during year, 2,500 second-feet July 21 (gage height, 4.28

 feet); minimum, 81 second-feet June 20, 21 (gage height, 1.30 feet).

1924-50: Maximum discharge, 52,900 second-feet Feb. 7, 1937 (gage height, 15.18 

feet); minimum, 65 second-feet July 8, 9, 1946 (gage height, 1.25 feet).

Flood peak of 74,000 second-feet (gage height, 18 feet, from floodmark), from rating 

curve extended above 52,000 second-feet 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 Apr. 28 to May 23, Aug. 19 to Sept. 18, which 

are good. Several small diversions above station for irrigation and one tt-ansmountain 

diversion from Black River to Eagle Creek Basin for mining and treatment of ore (see 

p. 394).

Revisions (water years). W 859: 1926, 1927, 1929, 1930, 1934, 1936. W 899: 1927, 1932, 

1937, 1938(M).

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

8 

9

10

11

12 

IS 

14 

15

16 

17 

18

19 

20

21 

2£ 

23 

24 

25

26 

27 

28

29 

30

31

Oct.

139 

133 

130 

136 

279

174 

159 

149 

142 

142

146 

146 

142 

136 

139

142 

149 

159 

244 

307

226 

205 

239 

222 

205

205 

201 

197 

193 

182 

174

Nov.

170 

167 

167 

163 

163

159 

159 

156 

156 

156

167 

167 

167 

163 

167

167 

163 

159 

159 

159

159 

156 

156 

156 

156

152 

152 

152 

152 

152

Dec.

152 

152 

156 

156 

156

152 

152 

149 

152 

189

271 

189 

149 

133

126

142 

156 

193 

193 

205

214 

185 

163 

159 

174

193 

170 

170 

174 

185 

193

Jan.

189 

193 

210 

226 

193

149 

139 

159 

193 

210

189 

185 

193 

182 

174

159 

156 

170 

189 

189

185 

185 

189 

197 

197

210 

205 

197 

193 

214 

218

Feb.

201 

189 iae

182 

185

189 

197 

210 

222 

239

258 

267 

258 

235 

218

218 

222 

226 

248 

262

281 

291 

291 

286 

291

296 

338 

388

Month

Ooto 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 1949

1. ......................................

ter year 1949-50 .......................

Mar.

447 

511 

728 

760 

705

667 

637 

601 

558

511

485 

454 

435 

423 

406

394 

388 

388 

376 

382

388 

394 

412 

423 

447

472 

441 

423 

423 

479 

498

Apr.

558 

637 

705 

736 

760

720 

690 

644 

682 

690

630 

565 

524 

485 

454

435 

423 

406 

394 

388

388 

400 

40O 

406 

394

376 

366 

350 

340 

325

Secondfoot-days

5,542 

4,797 

5,303

305,927

5,837 

6,870 

15,056 

15,271 

6,452 

3,278 

5,295 

5,647 

3,793

83,141

Peak discharge (base, 3,500 sec. -ft.). No peak above

May

310 

295 

280 

280 

290

285 

280 

265 

250 

240

225 

205 

200 

195 

190

185 

180 

180 

180 

175

175 

170 

170 

167 

163

159 

156 

152 

149 

152 

149

Maximum

307 

170 

271

7,740

226 

388 j 

760 | 

760 

310 

146 

531 

505 

3O7

760

June

146 

146 

143 

139 

136

130 

127 

127 

122 

108

105 

108 

103 

98 

95

93

86 

83 

83 

81

81 

93 

100 

111 

111

111 

108 

103 

103 

98

July

95 

93 

100 

95 

98

105 

113 

210 

143 

155

172 

133 

125

127 

125

116 

152 

197 

155 

139

200 

531 

172 

183 

325

197 

187 

155 

176 

267 

254

Aug.

343 

333 

276 

241 

279

221 

201 

176 

155 

146

155 

505 

201 

169 

155

172 

152 

139 

130 

125

122 

120 

133 

189 

139

119

112 

110 

119 

110 

100

Minimum Mean

Sept.

98

100 

103 

111 

110

115 

134 

127 

120 

115

115 

110 

108 

102

loo

100 

110 

120 

307 

285

159 

136 

130 

127 

122

113 

105 

103 

103 

105

Runoff in 

acre -feet

130 , 179 ! 10,990 

152 160 1 9,510 

126 171 10,520

126 838

139 188 

182 245 

376 486 

325 509 

149 208 

81 109 

93 171 

100 182 

98 126

606,700

11,580 

13,630 

29,860 

30,290 

12,800 

6,500 

10,500 

11,200 

7,520

81 228 I 164,900

base.

Note. Ho gage-height record Apr. 28 to May 23, Aug. 19-22, 27, 28, Aug. 30 to Sept. 2, Sept. 5, - 

9-18; discharge computed on basis of recorded range in stage and records for station near Roosevelt.
416 GILA RIVER BASIN

Salt River, near Roosevelt, Ariz.

Location.--Water-stage recorder, lat. 33°37', long. 110°55', in tffi£ sec. 9, T. 3 N., R.

 14 E.' unsurveyed, 100 feet downstream from bridge on Globe-Young highway, a quarter 01 

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. Datum 

of gage is 2,177.14 feet above mean sea level, datum of 1929.

Drainage area.--4,310 square miles. * 

Records available.--January 1913 to September 1950. 

Average discharge. 37 years, 917 second-feet.

Extremes.--Maximum discharge during year, 5,930 second-feet July 21 (gage height, 12.47 

feet]; minimum, 86 second feet June 21.

1913-50: Maximum discharge, 117,000 second-feet Mar. 14,1941 (gage height, 24.4 

feet), from rating curve extended above 55,000 second-feet on basis of velocity-area 

studies and float-area measurements at 66,000 and 102,000 second-feet; minimum, 71 

second-feet July 9, 1946.

Minimum discharge known, about 42 second-feet Aug. 5, 1911.

Remarks.--Records excellent. Several small diversions above station for irrigation and 

one transmountain diversion from Black River to Eagle Creek Basin. Records show inflow to Roosevelt Reservoir. See page 420 for record for Tonto Creek, which also contributes to Roosevelt Reservoir.

Revisions (water years).--W 1049: 1914, 1916, 1918, 1919, 1926.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1

2 

3 

4 

5

6 

7 

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.

164 

157 

153 

157 

172

273 

186 

175 

168 

160

160 

160 

164 

160 

160

168 

186 

194 

222 

340

330 

282 

264 

282 

260

243 

230 

230 

230 

218 

198

Nov.

194 

194 

186 

186 

186

186 

186 

183 

186 

190

198 

206 

198 

202 

202

198 

198 

194

190 

190

190 

186 

186 

186 

186

186 

183 

186 

186 

186

Dec.

186 

190 

190 

194 

190

190

186 

186 

186 

236

296 

306 

230 

194 

172

164 

183 

186 

222 

230

234 

234 

214 

194 

198

202 

222 

206 

202 

206 

210

Jan.

218 

214 

214 

226 

239

210 

180 

169 

194 

234

239 

226 

230 

234 

214

210 

202 

194 

206 

218

218 

218 

214 

222 

222

230 

234 

230 

230 

262 

252

Feb.

248 

234 

230 

222 

226

226 

230 

234 

266 

280

320 

347 

347 

330 

300

285 

295 

315 

315 

325

342 

364 

369 

358 

358

364

410 

602

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

ber.. ...................................

lendar year 194S 

ary .

ter year 1949-50 .......................

Mar.

619 

662 

808 

1,040 

945

846 

860 

724 

662 

610

570 

525 

503 

496 

475

454 

447 

440 

440 

434

440 

440 

440 

447 

489

525 

525 

518 

489 

510 

555

Apr.

594 

653 

742 

779 

817

826 

779 

733 

706 

760

724 

670 

594 

548 

510

496 

475 

455 

440 

440

434 

434 

428 

434 

434

422 

404 

386 

374 

369

Secondfoot-days

6,455 

5,714 

6,439

355,970

6,803 

8,742 

17,838 

16,860 

7,140 

3,489 

6,826 

6,636 

5,284

98,226

May

352 

336 

320 

305 

305

315 

305 

300 

285 

275

257 

244 

226 

214 

210

202 

198 

194 

190 

190

186 

186 

183 

183 

176

176 

176 

168 

162 

162 

158

Maximum

340 

206 

306

11,800

262 

602 

1,040 

826 

352 

158 

613 

619 

549

1,040

June

158 

155 

152 

149 

143

140 

136 

130 

130

127

118 

113 

110 

110 

102

99

96 

93 

91 

91

88 

121 

121 

104 

1 102

107 

104 

104 

99 

96

July

102 

99 

99 

93 

108

124 

110 

149 

300 

152

152 

169 

136 

121 

124

121 

176 

320 

337 

222

613 

531 

395 

214 

239

443 

248 

214 

180 

226 

310

Aug.

285 

398 

347 

290 

336

315 

234 

210 

183 

166

218 

619 

426 

222 

180

155 

176 

162 

149 

140

136 

130 

127 

127 

169

130 

127 

124 

118 

121 

116

1 

Minimum Mean

153 208 

183 190 

164 208

153 975

169 219 

222 312- 

434 575 

369 562 

158 230 

88 116 

93 220 

116 214 

102 176

88 269

Sept.

107 

102 

110 

107 

124

121 

155 

190 

152 

133

130 

124 

121

118 

110

114 

280 

243 

549 

521

275 

214 

214 

176 

162

146 

133 

124 

116 

113

Runoff in 

acre-feet

12,800 

11,330

12,770

706,100

13,490 

17,340 

35,380 

33,440 

14,160 

6,920 

13,540 

13,160 

10,480

194,800

Peak discharge (base, 4,000 see.-ft.) . July 21 (6:30 p.m.) 5.93O sec.-ft.
GILA RIVER BASIN 417

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 Plat Dam, 26 miles downstream from Roosevelt Dam; 

Sahuaro Lake formed by Stewart Mountain Dam, 36 miles downstream from Roosevelt Dam.

Drainage area. 6,220 square miles at Stewart Mountain Dam.

Records available. July 1910 to September 1950 (prior to October -1934, contents at end 

or eacn moncn only, published in Water-Supply Paper 1049),

Extremes. Maximum contents of system during year, 627,100 acre-feet Mar. 8; minimum 

contents, 303,700 acre-feet Sept. 30.

1910-50: Maximum contents, 1,764,000 acre-feet May 22, 1941; minimum, 20,680 

acre-feet Sept. 16, 1940.

Remarks. Total present capacity of the four reservoirs is 1,755,000 acre-feet, divided as 

Follows: Roosevelt Lake, 1,382,000 acre-feet; Apache Lake, 245,000 acre-feet; Canyon 

Lake, 58,000 acre-feet; Sahuaro Lake, 70,000 acre-feet. 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 irrigatien of Salt River Valley 

and for generation of power. The four dams forming these reservoirs completely develop 

fall in Salt River from Roosevelt Lake to Stewart Mountain 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 June 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, vater year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

621.3

620.6

619.9

618.6

617.1

616.0

614.8

614.0

613.3

612.8

612.7

611.3

610.0

608.7

607.7

606.7

605.6

604.5

604.5

604.2

604.3

604.6

604.5

604.3

603.8

603.1

602.7

602.2

601.8

601.4

600.5

Nov.

599.6

598.4

597.0

595.7

594.5

593.7

592.6

591.3

590.2

589.4

588.6

588.1

587.9

587.5

587.2

586.5

585.8

585.1

584.6

584.4

583.8

582.7

581.6

581.0

580.5

580.0

579.0

578.5

578.0

577.5

-

Dec.

577.0

576.5

576.3

575.7

574-. 8

574.3

573.3

572.4

572.3

572.9

573.2

573.7

574.0

574.0

573.7

573.3

573.3

573.7

573.3

573.8

574.0

574.7

575.2

575.2

575.6

576.1

576.8

577.2

577.8

578.2

578.6

Jan.

578.9

579.8

579.8

579.9

580.7

581.0

581.2

581.5

581.7

582.1

582.4

582.8

583.6

584.0

584.6

585.2

585.4

585.8

586.2

586.5

587.0

587.3

587.7

587.8

588.2

588.7

588.9

589.1

590.5

591.4

591.8

Feb.

592.1

592.5

593.0

593.6

593.8

594.0

594.5

595.1

595.9

596.3

598.0

599.1

600.6

601.4

602.6

603.9

604.4

605.4

605.7

605.9

605.7

606.7

607.6

608.1

608.9

610.0

611.0

612.5

_

-

-

Mar.

614.4

616.3

618.1

620.5

622.5

624.1

625.9

627.1

626.9

626.6

625.8

625.1

624.4

623.7

622.7

621.4

620.2

619.3

618.4

617.8

616.7

614.9

613.2

610.9

609.4

608.2

607.4

606.4

605.6

604.4

603.2

Apr.

603.1

602.6

602.0

601.7

600.8

599.8

598.4

597.7

596.9

596.2

595.5

594.5

593.4

590.8

589.6

588.6

586.9

585.4

583.9

582.4

5S0.9

579.5

577.9

576.4

575.1

573.5

571.9

570.5

569.1

567.8

-

May

566.8

564.7

563.2

561.8

560.8

559.9

558.8

558.0

556. S

555.4

553.6

551.6

550.2

549.1

548.0

546.3

544.1

542.0

540.4

538.3

537.0

535.2

 533.0

531.2

529.2

527.5

525.7

524.2

522.7

520.3

518.2

June

515.8

513.5

511.3

509.8

5O7.9

505.7

503.3

500.7

498.4

496.4

494.4

492.5

490.1

487.4

484.4

481.5

478.4

475.7

473.0

470.9

469.1

468.0

466.4

464.4

462.4

460.4

458.4

456.5

454.5

452.7

-

July

450.4

448.4

446.5

444.3

441.9

440.7

439.0

437.8

437.0

436.6

435.2

433.7

432.1

429.9

427.7

426.0

425.4

423.7

422.1

420.1

418.8

417.7

416.6

416.2

415.0

413.7

412.3

410.4

408.4

406.7

405.3

Aug.

403.8

402.9

401.1

398.7

398.0

397.4

396.4

395.2

392.9

390.7

389.1

387.8

386.9

385.8

383.9

382.2

380.1

378.4

37.6.7

374.7

372.8

370.9

369.2

367.4

365.5

363.9

362.2

360.5

358.9

356.7

354.5

Sept.

352.3

349.7

347.8

346.1

344.3

342.5

340.5

337.7

335.4

333.0

331.1

328.9

326.3

323.4

320.9

318.5

316.5

315.0

313.4

312.4

311.4

311.1

310.7

310.4

309.8

308.9

307.9

306.5

305.3

303.7

-
418 GILA RIVER BASIN

Salt River below Stewart Mountain Dam, Ariz.

Location.--Water-stage recorder, lat. 33°33'00", long. 111 C 34 I 35", in NjUW^- sec. 6, T. 2 

N.y H. 8 E., unsurveyed, 3| miles downstream from Stewart Mountain Dam and 6 miles upstream from Verde River. Prior to Jan. 21, 1950, water-stage recorder at site 2f miles 

upstream at different datum. Datum of former gage used prior to Jan. 21 was 1,396.33 

feet above mean sea level, datum of 1929.

Drainage area. 6,240 square miles, of which 22 square miles is below Stewart Mountain 

Dam; b,220 square miles at former site.

Records available.--October 1934 to September 1950. 

Average discharge. 16 years , 911 second-feet.

Extremes.--Maximum discharge during year, 2,000 second-feet July 8 (gage height, 4.92

reet), during period of storm inflow below Stewart Mountain Dam; minimum daily discharge 

14 second-feet Dec. 25 to Jan. 1.

1934-50: Maximum discharge, 11,700 second-feet May 7, 1941 (gage height, 15.97 

feet, site and datura then in use); minimum, 3 second-feet Jan. 8-20, 1935, and for 

several days in January and February 1943.

Remarks.--Records good. Records of flow at the present and former sites are equivalent. 

Flow regulated by Stewart Mountain Dam and three other dams (combined capacity, 

1,755,000 acre-feet, see preceding page). Flow is diverted at Granite Reef Dam, 10 

miles downstream, for irrigation in Salt River Valley.

Discharge, in second-feet, water year October 1949 to September 195O

Day

1 

Z 

3 

4 

5

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

737 

489 

483 

759

766

693 

658 

602 

521 

280

359 

853 

759 

730 

708

588 

759 

700 

300 

338

218 

214 

201 

232 

429

708 

568 

554 

548 

541 

568

Nov.

700 

818 

834 

887 

604

622 

650 

841 

804 

686

650 

405 

327 

343 

387

471 

502 

496 

422 

332

411 

650 

658 

434 

508

508 

489 

483

568 

452

Dec.

428 

44O 

440

416 

434

568 

608 

568 

465 

222

137 

185 

209 

196 

192

201 

214 

201 

242 

296

81 

17 

16 

15 

14

14 

14 

14 

14 

14 

14

Jan.

14 

1.5 

17 

17 

17

17 

17 

17 

17 

17

17 

17 

17 

17 

17

17 

18 

16 

18 

18

18 

19 

19 

19 

19

18 

17 

17 

19 

20 

18

Feb.

17 

17 

17 

17 

17

17 

16 

16 

16

16

18 

16 

15 

15 

15

15 

16 

16 

45 

226

476 

34 

20 

18 

17

18" 

19 

16

Month

Ooto 

Nove

Dece

Ca

janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194E

ter year 1949-50 .......................

Mar.

16 

17 

16 

19

17

15 

15 

106 

612 

731

731 

803 

968 

986 

1,020

1,130 

1,150 

893 

731 

603

977 

1,290 

1,290 

1,280 

1,310

1,160 

968 

1,010 

1,010 

1,010 

977

Apr.

830 

830 

830 

848 

1,180

1,180 

1,190 

1,180 

916 

1,020

1,310 

1,310 

1,310 

1,310 

1,260

1,180 

1,180 

1,260 

1,250 

1,160

1,160 

1,130 

1,110 

1,100 

1,110

1,110 

1,120 

1,120 

1,080 

848

Secondfoot -days

16,663 

17,142 

6,889

164,249

542 

1,181 

22,861 

33,422 

31,075 

37,398 

33,852 

35,264 

34,912

271,201

May

866 

1,120 

1,020 

986 

821

785 

714 

670 

866 

1,050

1,100 

1,130 

1,020 

731 

812

1,140 

1,220 

1,180 

1,120 

1,090

857 

939 

1,200 

1,140 

1,110

1,020 

1,020 

930 

968 

1,190 

1,260

Maximum

853

887 

608

1,590

20 

476 

1,310 

1,310 

,260 

,720 

,300 

,480 

,750

1,750

June

1,260 

1,300 

1,140 

968 

1,020

1,220 

1,250 

1,310 

1,310 

1,190

1,020 

1,040 

1,330 

1,460 

1,650

1,520 

1,720 

1,490 

1,570 

1,240

1,150 

1,150 

1,140 

1,140 

1,140

1,140 

1,140 

1,130 

1,120 

1,140

July

1,120 

1,100 

1,100 

1,100 

1,110

1,110 

1,100 

1,090 

679 

670

740 

866 

977 

1,120 

1,210

1,200 

1,200 

1,210 

1,290 

1,290

1,300 

1,300 

1,290 

1,110 

1,020

1,060 

1,130 

1,140 

1,110 

1,100 

1,110

Minimum

201 

327 

14

8

14 

15 

15 

830 

670 

968 

570 

785 

392

14

Aug.

1,030 

1,270 

1,350 

1,130 

973

785 

893 

1,140 

1,230 

1,280

1,240 

1,090 

803 

920 

1,120

1,140 

1,180 

1,190 

1,190 

1,190

1,170 

1,150 

1,150 

1,140 

1,140

1,130 

1,140 

1,130 

1,140 

1,350 

1,480

Mean

538 

571 

222

450

17.5 

42.2 

737 

1,114 

1,002 

1,247 

1,"092 

1,138 

1,164

743

Sept.

1,510 

1,540 

1,390 

1,260 

1,270

1,340 

1,750 

1,750 

1,520 

1,420

1,320 

1,460 

1,520 

1,590 

1,580

1,430 

1,270 

1,160 

1,220 

1,010

930 

392 

412 

399 

412

612 

662 

767 

996 

1,020

Runoff in 

acre-feet

33,050 

34,000 

13,660

325,800

1,080 

2,340 

45,340 

66,290 

61,640 

74,180 

67,140 

69,950 

69,250

537,900
GILA RIVER BASIN 419

White River near McNary, Arlz.

Location. Water-stage recorder, lat. 34°02'45", long. 109°44 I 15", In Ej sec. 31, T. 8 N. 

K. 25 E., unsurveyed. on Fort Apache Indian Reservation, 2 miles downstream from 

Paradise Creek and 6^ miles southeast of McNary. Altitude of gage, 7,750 feet (from 

Indian Irrigation Service river-profile map).

Drainage area. 74 square miles.

Records available. June 1945 to September 1950.

Extremes.--Maximum discharge during period April to September 1950, 188 second-feet 

 during March or April (gage height, 2.23 feet, from floodmark); minimum during period, 

7.8 second-feet Sept. 16, 17. Maximum discharge for period is also maximum for water 

year 1950.

1945-50: Maximum discharge, 1,290 second-feet Sept. 19, 1946 (gage height, 5.36 

feet), from rating curve extended above 350 second-feet by logarithmic plotting; minimum, 4 second-feet Nov. 19, 1948, caused by ice jam upstream.

Remarks. Records good. No diversion above station.

Discharge, In second-feet, water year October 1949 to September 1950

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 

23 

29 

30 

31

 Oct. Nov. Dec Jan. Feb.

«

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

M»v

June 

July 

Augu 

Sept

Th

lendar year

e period ................................

Mar., Apr.

62 

60 

56 

55 

54

50 

53 

55 

58 

61

64 

67 

70 

69 

69

67 

66 

64 

62 

58

Secondfoot -days

1,220 

1,200 

510 

498 

451.4 

308.1

-

May

5S 

57 

56 

56 

60

55 

4S 

44 

42 

41

36 

36 

36 

35 

35

34 

34 

35 

35 

35

35 

34 

33 

32 

31

31 

29 

2S 

27 

26 

26

Maximum

70 

60 

26 

41 

32 

16

_

June

26 

26 

25 

23 

22

23 

23 

20 

19 

19

18 

16 

16 

15 

15

14 

14 

13 

13 

13

13 

21 

18 

14 

13

12 

12 

12 

12 

10

July

10 

11 

11 

11 

16

16 

14 

15 

15 

15

14 

12 

10 

12 

11

11 

14 

14 

14 

14

14 

17 

19 

19 

19

15 

14 

16 

32 

32 

41

Minimum

50 

26 

10 

10 

9.4 

S.3

_

Aug.

23 

18 

15 

15 

17

15 

13 

12 

11 

12

17 

32 

17 

16 

16

16 

13 

12 

14 

12

12 

12 

12 

15 

18

13 

12 

11 

11 

10 

9.4

Mean

40.7 

38. 7 

17.0 

16.1 

14.6 

10.3

_

Sept.

8.7 

8.7 

S.7 

9.0 

10

13 

14 

10 

9.8 

9.4

9.4 

9.0 

8.7 

S.3 

8.3

8.3 

9.4 

12 

16 

14

11 

15 

11 

10 

9.8

9.8 

9.4 

9.0 

9.0 

9.4

Runoff In 

acre-feet

2,420 

2,380 

1,010 

988 

895 

611

8,300

Peak discharge (base. 200 sec.-ft.). No peak above base.
420 GILA RIVER BASIN

Tonto Creek above Gun Creek, near Roosevelt, Ariz.

Location. Water-stage recorder, lat. 33°59', long. 111°18' , in NE^SW^ sec. 2, T. 7 N., R. 

10 K., in Tonto National Forest, 600 feet upstream from Gun Creek, 23f miles northwest 

of village of Roosevelt, and 26 miles upstream from Roosevelt Dam. Datum of gage is 

2,523.14 feet above mean sea level, datum of 1929.

Drainage area. 678 square miles.

Records available . December 1940 to September 1950. January 1913 to December 1940 at site 

1U mlies downstream, published as Tonto Creek near Roosevelt.

Extremes. Maximum discharge during year, 5,500 second-feet July 16 (gage height, 8.25 

i'eet); minimum, 0.3 second-foot July 5.

1940-50: Maximum discharge, 32,000 second-feet Mar. 14, 1941 (gage height, 15.1 

feet), by slope-area method; no flow for short periods in several years.

Remarks. Records excellent except those for July 22-25, which are fair, and those for 

July 7-10, which are poor. Small diversions above station for Irrigation.

Revisions (water years). W 879: 1937, 1938. W 1049: 1916, 1917, 1922, 1926, 1935.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

12 

10 

8.4 

62 

55

30 

16 

14 

14 

15

15 

14 

13 

13 

13

13 

15 

51 

145 

99

57 

44 

37 

35 

30

30 

32 

30 

25 

24 

24

Nov.

20 

18 

17 

17 

17

16 

16 

17 

18 

19

22 

28 

24 

23 

22

21 

18 

18 

19 

18

17 

17 

18 

19 

17

16 

17 

17 

16 

16

Dec.

16 

16 

16 

16 

16

15 

15 

15 

15 

83

70 

41 

29 

26 

24

23 

24 

25 

25 

112

124 

65 

52 

44 

41

36 

33 

31 

31 

31 

30

Jan.

29 

32 

52 

50 

39

30 

31 

33 

32 

30

28 

28 

28 

28 

27

25 

25 

25 

24 

24

24 

24 

25 

28 

32

33 

32 

31 36 

66 

101

Feb.

80 

67 

71 

84 

99

106 

130 

313 

194 

154

204 

579 

348 

242 

190

172 

157 

140 

126 

114

108 

106 

93 

78 

73

73 

264 

320

Month

Goto 

Hove 

Dece

Ca

Janu 

Febr

Marc 

Aprl

Mav

June 

July 

Augu 

Sept

Wa

lendar year 19 4<

ter year 1949-50 .......................

Mar.

216 

203 

260 

210 

160

140 

116 

97 

88 

75

66 

59 

56 

54 

48

46 

43 

41 

40 

36

36 

36 

36 

36 

38

52 

48 

41 

40 

41 

49

Apr.

62 

64 

59 

52 

49

44 

42 

41 

41 

38

36 

35 

33 

32 

30

30

.. 28 

26 

24 

23

22 

22 

22 

20 

18

17 

17 

16 

14 

13

Secondfoot-days

995.4 

558 

1,140

55,308.5

1,052 

4,685 

2,507 

970 

308.4 

86.9 

1,102.4 

268.7 

157.8

13,831.6

May

13 

12 

12 

11 

13

14 

12 

11 

10 

12

11 

11 

11 

10 

10

10 

11 

10 

10 

11

10 

9.1 

9.1 

8.6 

7.8

7.3 

6.8 

6.8 

6.4 

6.0 

5.5

Maximum

145 

28 

124

5,530

101 

579 

260 

64 

14 

5.5 

370 

79 

40

579

June

5.5 

5.5 

4.9 

4.9 

4.5

4.9 

4.9 

4.2 

4.2 

3.6

3.9 

3.6 

2.9 

2.6 

2.3

2.1 

1.9 

1.9 

1.7 

1.5

1.4 

1.5 

1.9 

1.9 

1.7

1.5 

1.4 

1.5 

1.4 

1.2

July

0.8 

.4 

.4 

.6 

.4

1.5 

f!43 

f56 

f26 

f26

21 

12 

11 

8.2 

5.2

4.9 

370 

42 

19 

17

41 

f41 

£47 

f66 

f44

28 

21 

14 

11 

11 

13

Minimum

B.4 

16 

15

1.9

24 

67 

36 

13 

5.5 

1.2 

.4 

3.6 

2.6

.4

Aug.

15 

11 

8.6 

7.8 

9.6

7.8 

6.8 

6.4 

6.0 

4.9

79 

14 

7.3 

7.3 

5.5

5.5 

5.2 

5.2 

5.2 

4.9

4.5 

4.2 

4.2 

4.2 

4.2

4.2 

3.9 

3.9. 

5.2 

3.6 

3.6

Mean

32.1 

18.6 

36.8

152

33.9 

167 

80.9 

32.3 

9.95 

2.90 

35.6 

8.67 

5.26

37.9

Sept.

3.3 

3.3 

3.3 

3.3 

3.6

3.6 

15 

40 

6.4 

5.2

4.5 

3.3 

2.6 

2.6 

2.6

2.6 

2.9 

3.9 

3.9 

2.9

3.3 

3.9 

3.9 

3.9 

4.2

4.2 

4.2 

3.9 

3.6 

3.9

Runoff in 

acre-feet

1,970 

1,110 

2,260

109,700

2,090 

9,290 

4,970 

1,920 

612 

172 

2,190 

533 

313

27,430

Peak discharge (base, 1,500 sec. -f t. ) .--July 7 (9 p.m.) about 2,500 sec. -ft.; July 16 (12 p.m.)

ec.-ft.

f Fragmentary gage-height record; discharge computed on basis of partly estimated gage heights and 

weather records.
GILA RIVER BASIN 421

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

Location. Water-stage recorder, lat. 34°04'25", long. 111°42'50", in sec. 35, T. 9 N., R. 

6 E., unsurveyed, in Tonto National Forest, l£ miles downstream from Tangle Creek and 

9 miles upstream from Horseshoe Dam. Datum of gage is 2,029.0 feet abave mean sea 

level, datum of 1929.

Drainage area.--5.860 square miles (including 344 square miles in Aubrey Valley Playa, 

a closed basin).

Records available.--August 1945 to September 1950.

Extremes. Maximum discharge during year, 9,330 second-feet Oct. 19 (gage height, 10.50 

FeeT); minimum, 62 second-feet July 3 (gage height, 1.36 feet), caused by power regulation on Fossil Creek.

1945-50: Maximum discharge, 11,500 second-feet Sept. 19, 1947 (gage height, 11.47 

feet); minimum, 56 second-feet July 16, 17, 1948 (gage height, 1.30 feet), caused by 

power regulation on Fossil Creek.

Greatest flood since 1924 occurred Mar. 3, 1938, discharge, 100,000 second-feet, 

(gage height, 19.0 feet, from floodmarks), computed from comparison of peak discharge 

at other stations on Verde River.

Remarks. Records excellent except those above 2,000 second-feet, which are good. Small 

diversions above station. 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.

Discharge, in second-feet, water year October 1949 to September 1950

Day

 1 

2 

3 

4 

5

6 

7 

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.

228 

19S 

189 

189 

183

263 

238 

208 

213 

220

225 

223 

218 

201 

193

189 

198 

562 

3,930 

3,600

1,120 

755 

597 

498 

440

398 

360 

327 

307 

295 

281

Nov.

269 

261 

258 

255 

249

238 

238 

241 

241 

238

261 

312 

312 

289 

281

284 

272 

269 

266 

269

266 

258 

261 

258 

255

255 

252 

252 

249 

247

Dec.

244 

247 

244 

241 

241

252 

244 

249 

252

444

401 

363 

327 

307 

301

292

286 

284 

284 

447

43O 

345 

312 

304 

301

289 

281 

272 

272 

272 

263

Jan.

266 

278 

386 

61O 

437

354 

315 

298 

284 

284

281 

281 

286 

284 

284

286 

281 

281 

275 

275

272 

275 

281 

281 

272

304 

318 

298 

298 

304 

327

Feb.

315 

301 

292 

286 

286

292 

295 

2,770 

3,O20 

1,760

1,290 

1,52O 

1,130 

78O 

617

686 

848 

87O 

854 

925

925 

1,010 

930 

760 

658

639 

842 

2.38O

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Mar.

2,140 

1,470 

1,340 

1,170 

908

735 

635 

556 

470 

421

385 

347 

328 

313 

304

292 

292 

284 

272 

258

258 

247 

244 

225 

208

220 

244 

263 

258 

281 

424

Apr.

398 

334 

289 

255 

220

205 

198 

185 

178 

185

183 

176 

170 

166 

174

187 

2O1 

187 

17O 

162

149 

148 

144 

146 

146

141 

136 

134 

131 

131

Secondfoot-days

17,046 

7,856 

9,291

262, O2O

9,556 

27,281 

15,792 

5,629 

4,146 

. 3,035 

9,617 

6,023 

4,574

119,846

May

136 

131 

121 

128 

134

151 

155 

157 

160 

146

139 

132 

131 

129 

129

132 

132 

126 

131 

131

129 

129 

128. 

128 

134

132 

131 

131 

124 

128 

121

Maximum

3,930 

312 

447

5,820

610 

3,02O 

2,140 

398 

160 

112 

747 

431 

220

3,930

Peak discharge (base, 4.0OO sec. -ft. ). --Oct. 19 (11 p.m.) 9,330 se

June

112 

106 

1O9 

1O8 

1OO

HO 

109 

1O9 

108 

108

103 

108 

109 

1OO 

1O3

97 

96 

96 

88 

99

104 

104 

96 

92 

89

89 

10O 

1OO 

93 

90

July

85 

76 

76 

89 

88

147 

127 

681 

477 

209

252 

252 

223

189 

176

164 

460 

548 

334 

334

530 

703 

747 

446 

253

292 

365 

310 

255 

210 

419

Aug.

431 

344 

272 

231 

2O3

183 

27O 

238 

189 

164

151 

173 

144 

149 

148

132 

120

118 

116 

110

108 

118 

291 

213 

225

231 

208 

223 

193 

174 

153

Minimum Mean

183 550 

238 262 

241 30O

106 718

266 308 

286 974 

208 509 

131 188 

121 134 

88 101 

76 310 

108 194 

112 152

76 328

c.-ft.; Feb. 8 (9 p.m

Sept.

142 

124 

121 

114 

112

112 

120 

142 

218 

22O

201 

196 

ISO 

172 

157

146 

141 

139 

160 

160

155 

157 

155 

159 

155

159 

153 

144 

137 

123

Runoff In 

acre-feet

33,810 

15,58O 

18,430

519,700

18,950 

54,11O 

31,320 

11,160 

8,220 

6,020 

19,O8O 

11,950 

9,07O

237,7OO

) 5,620
422 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°59 I 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. 6N..R. 7 E., unsurveyed. Datum of gage on Horseshoe Reservoir is 1,900.00 feet and on Bartlett Reservoir, 1,609.46 feet above mean sea level, datum of 1929.

Drainage area.--6,160 square miles at Bartlett Dam.

Records available. July 1939 to September 1950. Prior to 1946 published as Bartlett 

Keservoir at Kartlett Dam.

Extremes. Maximum contents during year, 74,330 acre-feet Mar. 7; minimum, 531 acre-feet

1939-50: Maximum contents, 206,200 acre-feet 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. Since June 1950 total 

capacity of the two reservoirs has been 323,500 acre-feet divided as follows: Horseshoe Reservoir, 144,000 acre-feet between elevations 1,915.0 feet (sill of outlet gate) 

and 2,026.0 feet (top of spillway gates); Bartlett Reservoir. 179,500 acre-feet between 

elevations 1,619.46 feet (10 feet above sill of outlet gates) and 1,797,46 feet (top 

of spillway gates). Capacity of Horseshoe Reservoir was increased 76,100 acre-feet in 

June by increasing height of dam 4 feet and installing spillway gates. 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 1949 to September 195O

Day

1

2

3

4

5

6

7

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.

8,960

7,820

7,010

6,180

5,360

4,590

3,830

3,010

2,180

1,280

559

551

541

531

537

546

567

1,460

7,080

13,160

14,640

15,530

16,090

16,520

17,090

17,650

18,110

18,550

18,960

19,390

19,720

Nov.

20,110

20, 460

20,820

21,160

21,520

21,860

22,210

22,560

22,920

23,300

23,650

24,110

24,580

25,010

25,420

25,820

26,250

26,640

27,030

27,450

H7,860

28,240

28,640

29,040

29 , 420

29,820

30,200

30,600

31,010

31,400

-

Dec.

31,780

31,290

31,600

32,110

32,670

33,790

34,310

34,010

35,190

36,430

37,150

37,730

38,230

38,690

39,160

39,610

39,400

40,030

40, 680

41,500

4,2,000

4,2,470

4,2,940

43,440

43,910

43,830

43,210

41,620

39,740

37,720

38,180

Jan.

38,470

38 , 700

38,860

39,550

39,670

40,180

40, 200

40,590

40,760

40,850

40,700

40,790

40,610

40,680

40,790

40,830

40, 780

40,640-

40,280

39,960

40,050

40,220

40,020

39,940

39,660

39,310

38,440

38,570

38,820

38,580

38,450

Feb.

38,520

38,580

38,070

38,450

38,790

37,940

37,790

41,320

45,430

46,980

48,720

51,340

53,250

54,530

55,580

56,580

58,OOO

58,430

59,190

60,120

60, 430

59,710

58,370

56,950

56,720

56,950

58,170

61,910

_

_

-

Mar.

65,330

67,790

70,020

71,850

73,220

74,170

74,330

74,210

74,170

74,050

73,760

73,380

72,610

72,300

70,630

69,810

68,810

67,630

66,220

64,330

63,750

62,840

62,590

61,310

61,310

61,210

61,810

62,110

61,870

61,720

61,810

Apr.

61,620

61,040

60,310

59,070

57,830

56,890

55,930

55,570

55,530

55,660

55,460

54,900

53,800

52,580

52,140

52,180

52,150

51,510

50,150

48,650

47,670

47,130

46,940

46,60O

45,670

44,700

44, 300

44,330

44,330

44,330

-

May

44,300

44,260

44,220

44,180

44,150

44,180

44,210

44,250

44, 250

44,240

44,200

44,140

44,120

44,110

44, 100

44,070

44,040

44,070

43,980

43,940

43,900

43,880

43,860

43,830

43,850

43,870

43,860

43,870

43,880

43,840

43,810

June

43,740

43,640

43,570

43, 470

43,360

43,280

43,170

43,070

43,000

42,930

42,840

42,760

42,680

42,560

42,490

42,390

42,310

42,230

41,720

40,510

39,250

37,670

36,010

34,730

34,020

33,150

32,010

30,540

28,880

27,040

-

July

25,450

24,290

23,360

22,520

21,830

21,840

22,060

23,580

24, 430

24,750

24,880

25,020

25, 120

25,140

25,120

25,150

25,710

26,350

26,340

26,110

26,380

27,240

28,320

28,930

29,340

29,600

29,560

29,690

29,710

29,530

29,630

.Aug.

30,090

30,580

30,570

29,850

29,430

29,100

28,970

28,870

28,570

28,190

27,810

27,450

27,050

26,620

25,990

24,950

23,960

23,170

22,450

21,920

21,300

20,520

19,960

19,290

18,580

18,230

17,950

17,220

16,100

14,960

13,850

Sept.

12,650

11,830

10,250

9,020

7,850

6,850

6,200

5,850

5,490

5,160

5,040

4,890

4,800

4,640

4,480

4,340

4,330

4,240

4,170

3,980

3,820

3,840

3,910

3,980

3,870

3,800

3,730

3,810

3,84Q

3,790

-
GILA RIVER BASIN 423

Verde River below Bartlett Dam, Ariz.

Location.--Water-stage recorder, lat. 33°48'30", long. 111°40'00", in NE£ sec. 6, T. 5 H., 

R7~T~E., 2-f miles downstream from Bartlett Dam and 3^ miles upstream from Camp Creek. 

Datum of gage is 1,572.34 feet above mean sea level, datum of 1929.

Drainage area.--6,160 square miles.

Records available.--August 1888 to September 1950. Prior to 1941 at sites 3 to 20 miles 

downstream (see Water-Supply Paper 1049).

Average discharge. 62 years (1888-1950), 715 second-feet (adjusted for storage in 

Bartlett and Horseshoe Reservoirs).

Extremes. Maximum discharge during year, 1,640 second-feet Feb. 23 (gage height, 4.95 

feet); minimum, 5 second-feet Dec. 3.

1888-1939: Maximum discharge (flow not determined but probably over 150,000 secondfeet) occurred Feb. 24, 1891; minimum daily, 29 second-feet July 11, 13, 1901. Floods 

of Nov. 27, 1905, and Mar. 4, 1938, reached maximum discharges of 96,000 and 95,000 

second-feet, respectively.

1939-50: Maximum discharge, 45,800 second-feet Mar. 15, 1941 (gage height, 17.5 

feet, present site and datum, from floodmarks); no flow at Bartlett Dam at times in 

several years when gates in dam were closed.

Remarks.--Records excellent. Small diversions above station for irrigation. Flow compietely regulated by Bartlett Dam since Feb. 5, 1939, and also by Horseshoe Dam since 

Nov. 15, 1945 (see preceding page), except during periods of spill.

Revisions (water years). W 1049: 1893, 1913-14, 1916-18, 1925-27, 1929.

Discharge, in second-feet, water year October 1949 to September 1950

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

Oct.

637 

616 

600 

600 

600

600 

605

611 

600 

611

616 

262 

250 

234 

210

199 

199 

209 

583 

305

157 

136 

170 

253 

116

62 

53 

48 

42 

44 

41

Nov.

42 

37 

33 

30 

28

27 

27 

25 

24 

26

28 

27 

27 

27 

27

27 

28 

28 

27 

27

27 

25 

25 

24 

25

25 

25 

24

24 

23

Dec.

23 

20 

7 

26 

28

29 

30 

30 

30 

32

31 

31 

63 

30 

35

30 

30 

28

24 

102

299 

253 

243 

207 

207

417 

892 

1,200 

1,310 

1,080 

116

Jan.

155 

172 

187 

244 

295

301 

238 

201 

212 

262

342 

361 

339 

292

271

274 

304 

384

456 

475

394

317 

361 

440 

507

516 

499 

408 

320 

241 

190

Feb.

232 

295 

320 

317 

329

444 

622 

730 

916 

874

444 

82 

172 

172 

164

193 

307 

426 

444 

404

682 

1,300 

1,610 

1,540 

804

577 

408 

381

Month

Octo 

Hove 

Dece

Ca

Janu 

Febr 

Marc 

Apr!

June 

July 

Augu 

Sept

Wa

lendar year 194

ter year 1949-5O .......................

Mar.

286 

212 

162 

177 

221

262 

548 

670 

496 

472

452 

452 

516 

744 

941

948 

990 

976 

976 

969

781 

640 

564 

512 

439

80 

76 

128 

334 

396 

456

Apr.

452 

520 

833 

1,070 

760

705 

650 

362 

210 

239

364 

532 

620 

727 

365

126 

196 

493 

934 

852

605 

376 

236 

285 

592

650 

375 

111 

124 

120

Secondfoot-days

10,269 

819 

6,883

262,513

9,958 

15,189 

15,876 

14,484 

4,078 

10,923 

8,226 

14,429 

9,363

120.497

May

124 

138 

132 

122 

134

134 

134 

134 

134 

134

134 

134 

134 

134 

132

132 

134 

132

12 i 

136

134 

130 

130 

130 

130

'128 

128 

128 

128 

126 

130

Maximum

637 

42 

1,310

2,620

516 

1,610 

990 

1,070 

138 

1,070 

906 

784 

778

1.610

June

132 

130 

128 

126 

126

124 

124 

124 

122 

120

120 

118 

120 

120 

120

118 

116 

116 

266 

695

705 

920 

934 

716 

468

516 

655 

826 

948 

1,070

July

906 

675 

556 

524 

464

330 

170 

128 

124 

124

126 

130 

132 

134 

134

151 

245 

298 

330 

436

444 

351 

168 

160 

168

163 

151 

116 

126 

130 

132

Minimum

41 

23 

7

3

155 

82 

76 

111 

124 

116 

116 

134 

156

7

Aug.

134 

134 

330 

650 

458

351 

354 

354 

354 

354

351 

348 

348 

340 

430

695 

645 

536 

500 

396

420 

532 

582 

587 

596

436 

354 

544 

784 

778 

754

Mean

331 

27.3 

222

719

321 

542 

512 

483 

132 

364 

265 

465 

312

330

Sept.

778 

766 

766 

766 

695

592 

340 

239 

239 

242

245 

245 

245 

248 

250

216 

211 

211 

208 

203

203 

195 

158 

156 

156

158 

158 

158 

158 

158

Runoff in 

acre -feet

20,370 

1,620 

13,650

520,700

19,750 

30,130 

31,490 

28,730 

8,090 

21,670 

16,320 

28,620 

18,570

239.000

207364 O- 52 - 28
424 GILA RIVER BASIN

Diversion for city of Phoenix from Verde River, at McDowell, Arlz.

Location. Sparling meter, lat. 33°33', long. 111°40', in SE£ sec. 6, T. 2 N., R. 7 E., on

 pipe line, near mouth of Verde River, 1 and 6 miles downstream from intakes, and 6.1 

miles south of McDowell. Prior to April 1950, water-stage recorder and weir at site 

2 miles upstream.

Records available.--February 1922 to September 1950 (monthly diversion). See Water-Supply

 fapers aya ana 1009 for records prior to October 1944.

Remarks.--Water is diverted from infiltration galleries and shallow wells and also by

 pumping directly from the Verde River. Infiltration galleries are on right bank in 

SE-f sec. 6, T. 3 N., R. 7 E., three-quarters of a mile downstream from McDowell and 

6-5- miles upstream from mouth of river; pump is located in SET sec. 31, T. 3 N., R. 7 

E., 6 miles downstream from McDowell and 1 mile upstream from mouth. Water is used 

for municipal supply of Phoenix and is carried 29 miles to that city by pipe line. 

Negligible amount of waste occurs below point of measurement.

Cooperation.--Records collected by city of Phoenix and furnished by Salt River Valley 

water users' Association.

Monthly diversions, In acre-feet, 1944-50

Month

December .................

Calendar year ..........

September ................

1944-45

927

20,330

1,990

1945-46

1 530

1,180

20,310

1,880

1946-47

1,430

19,800

1,800

1947-48

1 990

1,500

22,000

2,530

1948-49

1,720

25,660

3,06O

1949-50

1,740

27,830

3,600

Diversions from Salt River at Granite Reef Dam, Ariz.

Location. Water-stage recorders at heads of Arizona and South canals, which divert on

 right and left banks, respectively, at Granite Reef Dam on Salt River, in lat. 33°31 ! , 

long. 111°42', 3| miles downstream from Verde River.

Records available. January 1913 to September 1950 (monthly diversion). See Water-Supply 

Papers B'/y ana 1009 for record prior to October 1944.

Remarks.--Records given herein are those of discharge at the two gaging stations less

 flow returned from the canals to the river by wasteways between stations and irrigated 

lands and represent the flow diverted from Salt River for irrigation in Salt River 

Valley. Discharge computed on basis of gage heights and current-meter measurements; 

flow returned to river at canal wasteways computed from records of rated gates or 

weirs.

Flow at Granite Reef Dam is regulated by four dams on Salt River (see Reservoir 

System on Salt River at and below Roosevelt Dam), by Bartlett Dam on Verde River, and 

since November 1945 by Horseshoe Dan on Verde River.

Cooperation.--Records furnished by Salt River Valley Water Users' Association.

Monthly diversl

Month

December ..............

Calendar year .......

September .............

1944-45

54,100

989,800

144,100

1945-46

51,800

997,200

88,200

1946-47

66,350

875,500

74,930

1947-48

43,570

663,600

67,030

86,160

1948-49

35,570

30,390

682,500

27,190

96,360

91,610

87,100

102,400

104,600

805 , 300

1949-50

35,430

26,800

805 , 300

74,330

93,180

89,070

82,230

93,750

85,380

750,500
GILA RIVER BASIN 425

Oak Creek near Cornvllle, Ariz.

Location. Water-stage recorder, lat. 34°46', long. 1110 53', In SE^ sec. 23, T. 16 N., R. 

4 hi., at bridge 0.2 mile upstream from Page Springs, 4 miles northeast of Cornville, 

and 11 miles upstream from mouth.

Drainage area. 357 square miles.

Records available. July 1940 to September 1945, April 1948 to September 1950.

Extremes. Maximum discharge during year, 6,400 second-feet Oct. 19 (gage height, 10.5 

reet); from rating curve extended above 1,700 second-feet by logarithmic plotting 

based on slope-area and contracted-opening determinations at gage height, 10.5 feet; 

minimum, 10 second-feet Aug. 19 (gage height, 2.19 feet).

1940-45, 1948-50: Maximum discharge, that of Oct. 19, 1949; minimum, 6 second-feet 

July 27, 1940 (gage height, 1.98 feet).

Maximum stage known, 23 feet Mar. 3, 1938, from floodmarks.

Remarks.--Records good. Several small diversions above station for irrigation. 

Revisions (water years). W 1149: 1948(M).

Discharge, In second-feet, water year October 1949 to September 195O

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

1O

11 

12 

13 

14 

15

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

32 

32 

32 

32 

32

30 

28 

38 

41 

36

35 

34 

33 

33 

32

33 

36 

449 

2,250 

304

172 

f!61 

f!23 

103 

81

64 

55 

48 

43 

40 

36

Hov.

37 

37 

35 

36 

35

35 

35 

35 

36 

37

151 

60 

49 

47 

43

42 

40 

39 

39 

39

38 

37 

36 

36 

35

34 

34 

34 

34 

34

Dec.

34 

35 

34 

35 

35

35 

34 

34 

35 

68

81 

54 

46 

42 

37

37 

38 

37 

37 

42

43 

42 

40 

39 

38

37 

37 

37 

37 

38 

42

Jan.

60 

326 

29O 

136 

83

58 

48 

42 

39 

38

37 

38 

39 

38 

37

37 

36 

36 

36 

38

51 

52 

55 

76

119

77 

56 

47 

48 

49 

46

Feb.

40 

38 

37 

3S 

44

64 

500 

956 

490 

267

246 

185 

126 

103 

132

218 

219 

206 

261 

244

307 

270 

212 

190 

202

224 

829 

793

Month

Octo 

Hove 

Dece

Ca

Janu 

Pebr 

Marc 

Aprl 

Mav

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Mar.

408 

384 

304 

197 

159

138 

117 

89 

78 

70

62 

56 

51 

46 

44

40 

38 

36 

36 

37

37 

37 

38 

37 

39

47 

44 

39 

99 

96 

75

Apr.

56 

48 

44 

40 

37

32 

30 

30 

35 

35

35 

34 

32 

34 

32

32 

31 

29 

27 

27

28 

26 

23 

22 

23

22 

24 

24 

23 

25

Secondfoot-days

4,498 

1,259 

1,26O

46,607

2,168 

7,441 

2,978 

940 

759 

751 

1,266 

668 

1,060

25,048

flay

25 

24 

24 

25 

35

31 

29 

27 

27 

26

24 

24 

23 

22 

22

23 

24 

24 

25 

25

25 

25 

22 

21 

' 22

20 

21 

22 

24 

24 

24

Maximum

2,250 

151 

81

2,250

326 

956 

408 

56 

35 

30 

195 

51 

58

2,250

June

24 

24 

24 

24 

24

24 

19 

23 

28 

26

27 

28 

28 

29 

29

29 

30 

28 

28 

27

25 

24 

24 

25 

22

18 

20 

22 

24 

24

July

24 

24 

24 

24 

23

24 

36 

38 

43 

37

32 

29 

25 

24 

24

22 

28 

36 

195 

100

60 

48 

34 

29 

28

24 

22 

27 

23 

88 

71

Minimum

28 

34 

34

16

36 

37 

36 

22 

20 

18 

22 

13 

14

13

' Aug.

31 

26 

21 

19 

2O

19 

20 

18 

18 

17

20 

25 

23 

20 

19

17 

17 

16 

13 

16

16 

18 

25 

42 

51

24 

21 

21 

20 

IS 

17

Mean

145 

42.0 

40.6

128

69.9 

266 

96.1 

31.3 

24.5 

25.0 

40.8 

21.5 

35.3

68.6

Sept.

16 

15 

14 

15 

18

39 

39 

40 

56 

56

53 

55 

55 

54 

49

49 

47 

42 

44 

38

34 

32 

3O 

26 

24

24 

22 

21 

24 

24

Runoff In 

acre-feet

8,920 

2,500 

2,500

92,450

4,300 

14,760 

5,91O 

1,860 

1,51O 

1,490 

2,510 

1,320 

2,100

49,68O

Peak discharge (base, 1,300 sec.-ft.). Oct. 19 (3 a.m.) 6,400 sec.-ft.; Feb. 7 (11 p.m.) 1,670 

sec.-ft.; Feb. Z7 (8:3O p.m.) 1,39O sec.-ft.

f Computed from partly estimated gage-height record.
426 GILA RIVER BASIN

Agua Pria River near Mayer, Ariz.

Location. Water-stage recorder, lat 34°19', long. 112°04', In NW£SE£ sec. 20, T. 11 N.,

 H. 3 K., at Sycamore dam site, 700 feet downstream from Bigbug Creek and 12 miles

southeast of Mayer. Altitude of gage, 3,434 feet (levels by Maricopa County Municipal 

Water Conservation District No. 1).

Drainage area. 588 square miles.

Records available. January 1940 to September 1950.

Average discharge. 10 years, 15.1 second-feet.

Extremes. Maximum discharge during year, 2,170 second-feet July 17 (gage height, 6.10 

reet); minimum daily, 0.1 second-foot on many days.

1940-50: Maximum discharge, 13,000 second-feet Mar. 1, 1941 (gage height, 11.97 

feet), by slope-area method; 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,

 which are poor. Diversions above station for irrigation and mining. Figures of daily 

discharge do not include water diverted Just above station to Perry Canal.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1

2

3 

4

5

6 

Y 

8

9

10

11

12

13

14

15

16

1Y

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

1.0

1.0

1.0 

1.0

1.0

. 8 

.8 

.8

.8

.8

.3

.8

.3

.3

.8

.8

.8

354

96

f2.5

fl.5

1.5

1.5

1^4

1.4

1.4

1.4

1.0

.1

a.l

a.l

Month

October. . . .

November.. .

December. . .

Calendar 

year 1949

January. . . .

February. . .

March. .....

April. .....

Mflv

July.......

August. ....

September. .

Water year 

1949-50. .

Nov.

aO.l

.1

.1

.1

.1

.1

.1

.1

.1

.1

-

Dec.

0.1

.1-

.1

.1

.1 

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.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

.1

.1

.1

.1

.1

.1

.1

Feb.

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

17

29

_

_

-

Mar.

10

8.6

5.9

a5

33 

33

a3

33

a2.5

a2.5

a2.5

32.5

a2.5

32.5

al.5

a. 8

a. 8

a. 8

a. 6

.6

.6

.6

2.2

3.2

2.4

1.3

1.6

1.3

1.3

Apr.

1.1

1.1

1.1

1.1

1.6 

l.S

2.1

1.9

2.0

.7

.6

.7

.7

.6

.6

.7

.7

.7

.7

.6

.6

.6

.6

.6

.7

.6

.4

.2

-

Hay

0.2

.3 

.3

.6

.6

.7 

1.1

1.3

1.3

1.1

1.1

1.3

1.6

1.1

.3-.2

.2

.2

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

Observed

Secondfoot-days

478.5

3.0

3.2

4,460.7

3.1

48.6

87.8

27.6

15.6

3.0

899.5

219.0

58.3

1,847.3

Discharge in second-feet

Maximum

354

_

.2

932

.1

29

10

2.1

1.6

.1

239

117

21

354

Minimum

O.I

_

.1

-

.1

.1

.6

.2

.1

.1

.1

.7

.3

.1

Mean

15.4

.10

.10

12.2

.10

1.74

2.83

,92

50 iio

29.0

7.06

1.94

5.O6

Runoff in 

acre-feet

949

6.0

6.3

8,850

6.1

96

174

55

51

6.0

1,780 

434

116

3,660

June

0.1

.1 

.1

.1

.1

.1 

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.

.

.1

.1

-

July

0.5

.7 

.4

.3

.2 

.2

1.3 

33

1.9

.6

.4

.3

.4

.2

.1

.1

81

196

SO

32

f3.2

fl.8

fl.S

87

13

4O

4.3

f.4

f.4

239

Diversion

by 

Perry Canal 

(acre-feet)

7.7

67

138

602

158

149

33

47

54

43

54

0

0

751

79

Aug. Sept.

0.9 h

.9 1

- 1

61 U 

a2 1.3

al 17 

21

L 1.6

a. 3

fl.4

117

15

al

a. 7

.6

.6

.6

.3

.3

.3

.4

.6

.4

.6

-

Adjusted for diversion

Runoff in 

acre-feet

957

73

144

9,450

164

245

207

102

85

49

1,830

434

116

4,410

Mean 

(secondfeet)

15.6

1.23

2.35

13.1

2.67

4.41

3.37

1.71

1.38

.82

29.8

7.06

1.94

6.09-

Peak discharge (base, 1,500 sec.-ft.). Oct. 18 (6:30 p.m.) 1,690 sec.-ft.; July 17 (12 p.m.) 2,170 

sec.-ft.; July 3O (6:30 p.m.) 1,950 sec.-ft.; July 3O (9 p.m.) 1,740 sec.-ft.

a No gage-height record; discharge computed on basis of adjoining good record and weather records, 

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
GILA RIVER BASIN 427

Agua Fria River at Lake Pleasant Dam, Ariz.

Location. Staff gage, lat. 33°51', long. 112°16', in NW£ sec. 21, T. 6 N., R. 1 E., at 

iert upstream end of Lake Pleasant Dam, 24t miles upstream from New River. Datum of 

gage is 1,431.2 feet above mean sea level, datum of 1929.

Drainage area. 1,460 square miles.

Records 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), October 1933 to September 1950 (monthly 

discharge).'

Average discharge. 22 years (1914-19, 1933-50), 133 second-feet.

Extremes.--1910-24. 1933-50: Maximum discharge, about 105,000 second-feet Nov. 27, 1919 

(gage height, 33 feet, datum then in use, from floodmarks), from rating curve extended 

above 13,000 second-feet on basis of velocity-area studies; no flow during spring and 

summer of several years.

A discharge of about 105,000 second-feet (gage height, 30 feet, same datum as in 

1919, from floodmarks) occurred Jan. 27, 1916. On basis of comparative gage heights, 

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 water-stage 

recorder and sharp-crested rectangular weir in canal 650 feet 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 

I-s feet 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 above Lake 

Pleasant for irrigation.

Cooperation. Records collected and prepared in cooperation with Maricopa County Municipal 

water Conservation District No. 1.

Revisions (water years). W 1049: 1918.

Monthly discharge, water year October 1949 to 

September 1950

Month

December ..............

Calendar year 1949..

May. ..................

July. .................

September .............

Water year 1949-50..

Mean 

(second-feet)

65.1

3.6

9.O

54.3

4.1

9.7

2.3

50.3

.4

14.2

Runoff In 

acre -feet

4,000

214

555

39,280

254

541

137

21

10,260
428 GILA RIVER BASIN

Lake Pleasant at Lake Pleasant Dam, Ariz.

Location. Staff gage, lat. 33°51', long. 112°16', in NW£ sec. 21, T. 6 H., R. 1 E., at

 leTTTupstream end of Lake Pleasant Dam on Agua Fria River. Datum of gage is 1,431.2 

/eet above mean sea level, datum of 1929.

Drainage area. 1,460 square miles.

Records available. February 1928 to September 1950. (Yearly data only prior to 1939.)

Extremes. Maximum contents during year, 6,790 acre-feet Mar. 26'to Apr. 12 (gage height,

 8375? feet); minimum, 218 acre-feet Sept. 27-30.

1928-50: Maximum contents, 178,500 acre-feet Apr. 19, 1941 (gage height, 170.13 

feet), of which 500 acre-feet 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-feet between gage heights 59 feet (25 feet above center line of 

outlet works) and 170.0 feet (top of spillway gates). There is no storage below gage 

height 59 feet 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 Marlcopa County Municipal Water Conservafcion District No. 1.

Usable contents at 5 p.m., In acre-feet, water year October 1949 to September 1950

Day

1

2

3

4

5

6

7

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.

4,490

4,420

4,340

4,240

4,160

4,070

3,970

3,790

3,590

3,330

3.O80

2,800

2,580

2,340

2,110

1,350

1,610

1,450

4,660

4,930

5,050

5,070

5,OSO

5,080

5,090

5,090

5,100

5,100

5,100

5.100

5,090

Nov.

5,090

5,090

5,090

5,090

5,O90

5,080

5,080

5,O80

5,080

5,08.0

5,110

5,100

5,110

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,100

5,110

5,110

5,11O

5,110

-

Deo.

5,110

5,110

5,110

5,110

5,110

5,110

5,110

5,110

5,110

5,120

5,39O

5,420

5,440

5,440

5,440

5,440

5,480

5,460

5,460

5,479

5,500

5,500

5,500

5,500

5-,500

5,310

5,530

5,530

5,530

5,530

5,530

Jan.

5,530

5,530

5,530

5,530

5,530

5,530

5,530

5,530

5,530

5,530

5,540

5,580

5,590

5,590

5,590

5,590

5,590

5,590

5,590

5,59O

5,590

5,590

5,590

5,590

5,590

5,590

5,59O

5,590

5,590

5,640

5,6SO

Feb.

5,630

5,630

5,630

5,630

5,680

5,680

5,680

5,680

5,630

5,630

5,730

5,810

5,810

5,810

5,810

5,840

5,330

5,880

5,880

5,880

5,910

5,920

5,920

5,920

5,920

5,920

5,990

6,090

_

-

-

Mar.

6.27O

6,400

6,530

6,620

6,670

6,720

6,730

6,730

6,730

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,740

6,770

6.79O

6,79O

6,790

6,790

6,790

6,79O

Apr.

6,790

6,790

6,790

6,790

6,790

6,790

6,790

6,790

6,790

6,790

6,79O

6,790

6,780

6,770

6,760

6,750

6,730

6,720

6,710

6,70O

6,690

6,68O

6,670

6,660

fi,65O

6,640

6,630

6,630

6,620

6,620

-

Hay

6,600

6,590

6,580

6,57O

6,560

6,540

6,530

6,520

6,500

6,490

6,480

6,470

6,460

6,450

6,440

6,430

6,420

6,4OO

6,390

6,370

6,360

6,340

6,320

6,310

6,290

6,230

6,260

6,240

6,230

6,220

6,210

June

6, ISO

6.17O

6,160

6,150

6,140

6,130

6,120

6,110

6,100

6,03O

6,O6O

6.O50

6,O40

6,030

6,020

6,000

5,980

5,960

5,950

5,940

5,920

5,910

5,S9O

5,SSO

5,870

5,860

5,360

5,850

5,840

5,840

-

July

5,820

5,320

5,320

5,790

5,780

5,7SO

5,770

6,31O

6,720

6,720

6,700

6,690

6,680

6,490

6,190

6,OOO

5,830

5,770

5,75O

5,63O

5,510

5,360

5,710

6,O9O

6,070

5,930

5,86O

5,760

5,610

5,460

5,660

Aug.

5,700

5,560

5,390

5,25O

S.lCiO

4,950

4,800

4,650

4,480

4,330

4,160

4,02O

3,350

3,670

3,530

3,380

3,210

3,050

2,900

2,740

2,600

2,440

2,340

2,130

2,000

1,350

1,790

1,660

1,520

1,410

1,280

Sept.

1,150

1,010

874

757

618

473

377

230

192

223

222

221

221

221

221

220

220

220

220

220

220

220

220

220

220

220

21S

213

213

218

-

Monthly gage height and contents, water year October 1949 to September 195O

Date

Nov. 30....................

Dee . 31 ....................

Water year 1949-50 .......

Gage height 

(feet)t

81.05

-

Contents 

(acre -feet)

5.53O

-

Change in contents 

during month 

(acre-feet)

+42O

-4,330

t Gage height at 5 p.m.
OILA RIVER BASIN 429

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

Location.--Water-stage recorder, lat. 34°02'35", long. 112°42'35", in SE-J- sec. 7, T. 8 H., 

K. 4 tf., unsurveyed, at Box dam site, 1\ miles upstream from Wickenburg. Datum of .gage 

is 2,236.12 feet above mean sea* level, datum of 1929. Prior to Nov. 17, 1949, at datum 

2.16 feet higher.

Drainage area.--417 square miles.

Records available.--January to June 1938, May 1946 to September 19SO.

Extremes.--Maximum discharge during year, 5,500 second-feet Oct. 18 (gage height, 9.01 

reet, present datum); minimum daily 0.8 second-foot on several days during August and 

September..

1938, 1946-50: Maximum discharge, about 10,000 second-feet Mar. 3, 1938 '(gage 

height, 10.65 feet, present site and datum, from floodmarks): minimum, 0.2 second-foot 

Oct. 3, 1948.

Remarks.--Records good except those below 1 and above 100 second-feet, which are fair, and 

those for periods of fragmentary or no gage-height record, which are poor. Small diversions above station for irrigation and mining.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

1.0 

.9 

.9 

30 

15

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

1.8 

1.5

1.5 

1.5 

1,170 

234 

a20

alO 

a8 

a6 

a5 

a5

a5 

a4 

a4 

a4 

a4 

a4

Nov.

a4 

a4 

a4

a4 

a4

3.7 

3.4 

3.4

3.7

7

6 

3.4 

2.9 

a2.7 

a2.5

a2:4 

a2.3 

2.4 

2.6 

a2.5

a2.S 

a2.5 

a2.5 

a2.5 

a2.5

a2.5 

a2.5 

a2.5 

a2.5 

a2.5

Dec.

a2.5 

a2.5 

a2.5 

a2.5 

a2.5

a2.5 

a2.5 

a2.5 

a2.5 

f6

a4 

a3 

a3 

3.2 

2.9

2.9 

2.4 

a2.5 

a3.0 

a3.5

3.7 

5 

4.7 

4.7 

4.7

4.2 

4.2 

4.2 

4.7 

4.7 

3.7

Jan.

3.4 

3.4 

4.2 

4.2 

3.7

3.4 

3.2 

2.6 

3.7 

3.4

2.9 

2.6 

2.9 

2.9 

2.6

3.7 

3.7 

3.2 

2.6 

3.2

2.9 

2.9 

3.4 

3.4 

3.4

3.4 

3.7 

3.4 

3.2 

5 

6

Feb.

5 

2.6' 2.9 

3.2 

3.4

2.9 

2.6 

4.2 

5 

3.7

4.7 

7 

6 

4.2 

4.2

4.2 

4.7 

4.2 

3.7 

3.4

3.4 

3.4 

3.7 

3.2 

2.9

2.6 

3.4

7

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Apr! 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-50 .......................

Peak discharge (base, 300 sec. -ft.). Oct.

Mar.

6 

7 

7 

3.7 

4.7

3.7 

3.4 

3.7 

5 

5

5 

3.4 

2.9 

3.2 

3.2

3.2 

2.9 

2.9 

2.4 

3.2

3.1 

2.4 

2.4 

3.4

2.1

2.4 

2.1 

1.5 

3.4 

2.6 

2.9

Apr.

3.2 

2.9 

2.9 

3.4 

2.9

3.2 

4.2 

4.2 

4. 

3.

3. 

2. 

2. 

2. 

2.9

4.2 

2.6 

3.2 

3.2 

2.4

2.4 

2.6 

2.6 

2.6 

3.2

2.9 

2.6 

1.8 

2.1 

4.3

Secondfoot-days

1,555.5 

95.9 

107.4

7,497.9

106.2 

111.4 

107.8 

91.7 

77.3 

65.1 

206.5 

58.4 

139.9

2,723.1

May

3.7 

4.7 

3.4 

3.4 

2.9

3.7 

2.6 

2.4 

a2.4 

a2.4

a2.4 

a2.4 

a2.2 

a2.2 

a2.2

a2.2 

a2.2 

a2.2 

a2.2 

a2.2

a2.1 

a2.1 

2.1 

2.1 

1,8

1.8 

1.8 

1.8 

2.1 

2.4 

3.2

Maximum

1,170 

7 

6

1,170

6 

7 

7 

4.7 

4.7 

2.9 

53 

10 

35

1,170

4 (8 p.m.) 351 sec. -ft.

June

2.9 

2.6 

2.9 

2.9 

2.6

2.6 

2.6 

2.9 

2.6 

2.4

2.6 

2.6 

2.9 

2.9 

2.6

2.6 

2.4 

2.1 

2.1 

2.4

2.1 

2.1 

1.8 

1.3 

1.0

1.0 

.9 

.9 

.9 

.9

July

0.9 

.9 

.9 

.9 

.9

1.0 

.9 

14 

9 

12

2.4 

2.4 

2.1 

1.5

1.5

1.5 

1.5 

1.5 

1.5 

1.8

2.4 

2.6 

2.0 

27 

14

18 

53 

11 

f6 

f3.4 

8

Minimum

0.9 

2.3 

2.4

.3

2.6 

2.6 

1.5 

1.8 

1.8 

.9 

.9 

.8 

.8

.8

; Oct. 18

Aug.

a2.4 

a2.l 

a2.1 

1.8 

1.8

1.3 

.8 

.9 

.8 

.8

5 

10 

2.4 

2.1 

1.5

1.3 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

1.5 

1.3 

2.7

.9 

3.3 

.8 

1.0 

1.0 

1.0

Mean

50.2 

3.20 

3.46

20.5

3.43 

3.98 

3.48 

3.06 

2.49 

2.17 

6.66 

1.88 

4.66

7.46

Sept.

0.9 

.8 

.8 

.8 

.8

31

35 

10 

6 

2.4

2.1 

1.8 

2.1 

2.1 

1.8

1.8 

2.9 

3.2 

3.2 

3.2

3.2 

3.2 

2.9 

3.2 

3.2

2.6 

1.8 

2.1 

2.4 

2.6

Runoff In 

acre-feet

3,090 

190 

213

14,880

211 

221 

214 

182 

153 

129 

410 

116 

277

5,410

7:30 p.m.) 5,500 sec.

ft.5 July 26 (11:30 p.raT) 345 sec.^ff.

a No gage-height record; discharge computed on basis of weather records, probable discharge recession curve, or interpolation.

f Fragmentary gage-height record; discharge computed from partly estimated gage-height record.
430 SULPHUR SPRING VALLEY

WHITEWATER DRAW BASIN 

Whitewater Draw near Douglas, Ariz.

Location.--Water.-stage recorder, lat. 31°21'15", long. 109°35'00", in SW^SE^ sec. 10, T. 

24 S., R. 27 £., at bridge on U. S. Highway 80, If miles upstream from international 

boundary and 2 miles west of Douglas. Datum of gage is 3,907.10 feet above mean sea 

level, datum of 1929.

Drainage area. 1,023 square miles.

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 1950.

Average discharge. 23 years (1913-19, 1930-33, 1935-46, 1947-50), 11.9 second-feet.

Extremes.--Maximum discharge during year, 3,400 second-feet July 19 (gage height, 12.38 

feet); minimum daily, 0.1 second-foot on many days.

1930-50: Maximum discharge, 3,450 second-feet Aug. 10, 1931 (gage height, 12.15 

feet); minimum, 0.1 second-foot at times during several years.

Maximum discharge known, 4,050 second-feet (estimated) July 27, 1919.

Remarks.--Records fair .except those for periods of fragmentary or no gage-height record1 , 

which are poor. Diversions above station for irrigation, mostly by pumping from 

ground water.

Discharge, in second-feet, water year October 1949 to September 1950

Day

1 

2 

3 

4 

5

6 

7 

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.

0.6 

.7

.6 

1.7 

2.6

2.1 

.6 

.4 

.3 

2.6

.5 

.3 

.3 

.3 

.3

.3 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2 

.2

Nov.

0.2 

.2 

.2 

.2 

.2

.2 

.3 

.3 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4 

.4 

.4

.4

.4 

.5 

.6 

.5 

.5

.6 

.6 

.6 

.6 

.6

Dec.

0.6 

.6 

.6 

.6 

.6

.6 

.5 

.5 

.5 

.9

7.4 

2.O 

.7 

.6 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4

.4 

.4 

.4

.4

.4 

.4 

.4 

.4 

.4

Jan.

0.5 

.6 

.6 

.4 

.4

.4 

.4 

.4

.5 

.5

.4 

.4 

.6 

.4 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.4

.4 

.4

.5 

.4

.5 

.6

Feb.

0.6 

.6 

.6 

.6 

.6

.6 

.6 

.6 

.6 

.6

.8 

1.0 

.8 

.6 

.5

.4

.5 

.4 

.5 

.6

.5 

.5 

.5 

.5 

.5

.7 

.7 

.6

Month

Octo 

Nove 

Dece

Ca

Janu 

Febr 

Marc 

Aprl 

May.

June 

July 

Augu 

Sept

Wa

lendar year 1949

ter year 1949-5O .......................

Peak discharge fbase, 1,OOO sec. -ft.). Ju]

sec. -ft.) July 21 (1 a.m.) 1,520 sec. -ft.; c 

a No gage-height record; discharge interpc 

f Fragmentary gage-height record; dischare

Mar.

0.7 

.7

.6

:5

.5

.4 

.4 

.4 

.4 

.4

.4 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.2 

.2

.4

.4 

.3

.3 

.2 

.2

Apr.

0.2 

.2 

.2 

.2 

.3

.3 

.3 

.4 

.3 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.3 

.4

.4

.4 

.4

.3 

.3

.3 

.3 

.2 

.2 

.2

Secondfoot-days

17.4 

12.1 

23.5

3,136.8

12.7 

16.6 

11.2 

7.9 

5.1 

96.4 

3,860.8 

121.6 

58.9

4,244.2

May

0.2 

.2 

.2 

.2 

.2

.3 

.2 

.2 

.2 

.2

.2 

.2 

.2

.2 

.2

.2 

.2

.1 

.1 

.1

.1 

.1 

.1 

.2 

.2

.1 

.1 

.1 

.1 

.1 

.1

Maximum

2.6 

.6 

7.4

622

.6 

1.0 

.7 

.4 

.3 

56 

618 

54 

18

618

June

0.1 

.1 

.1 

.1 

.1

.1

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.1

.1 

.1 

.1 

.1

.2

f36 

f56 

.6 

.4

a. 3 

a. 3 

a. 2 

a. 2 

a. 2

July

aO.l 

a.l 

a.l 

a.l 

17

185 

211 

loo

174 

102

f6.3 

a2

al 

a. 8 

a, 6

a. 5 

a. 4 

1.7 

527 

618

608 

530 

187 

131 

15

4.8 

1.7 

.8 

.8 

246 

188

Minimum

0.2 

.2 

.4

.1

.3 

.4 

.2 

.2 

.1 

.1 

.1 

.5 

.2

.1

Aug.

54 

16 

6.8 

3.6 

3.3

3.1 

4.3 

1.7 

.9 

.8

4.7 

6.8 

2.2 

.9 

.8

.8 

.8 

.9 

.8 

.8

.9 

.9 

.8 

.8 

.7

.6 

.6 

.6 

.6 

.5 

.6

Mean

0.56 

.40 

.76

8.59

.41 

.59 

.36 

.26 

.16 

3.21 

125 

3.92 

1.96

11.6

Sept.

0.6 

.3 

.3 

.3 

.4

.3 

.3 

.3 

.3

.3

.3 

.3 

.3 

.2 

.3

.3

.6

18 

15 

.8

.5 

3.8 

.8 

.4 

.3

.4 

.4 

.4 

.4

12

Runoff in 

acre-feet

35 

24

.47

6,230

25 

33 

22

16 

10 

191 

7,660 

241 

117

8,420

y 9 (8 p.m.) 1,070 sec. -ft.; July 19 (10:30 p.m.) 3,400 

fuly 22 (7:30 a.m.) 1.07O sec. -ft. 

lated. 

e computed from partly estimated gage heights.
MISCELLANEOUS DISCHARGE MEASUREMENTS 431

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 1949 to September 1950

Tributaries above Gunnlson River, Colo.

Date

Oct. 12

AUK 15

Oct. 13

Oct. 7

Aug. 8

Oct. 16

Sept. 12

Stream

South Fork Williams 

River.

Simpson Creek. .....

North Pork Tenmile 

Creek.

Laskey Gulch. ......

.... do .............

Tributary to or 

diverting from 

Williams River. .....

Keyser Creek. .......

Tenmile Creek. ......

Straight Creek. .....

.... do ..............

Locality

Sec. 12, T. 3 S., R. 77 W., at mouth 

near Leal.

Sec. 25, T. IS., R. 77 W. , at mouth 

near Leal.

Sec. 34, T. 5 S., R. 78 «l . , near 

Frisco.

Sec. 4, T. 53., R. 77 W. , at mouth 

near Dillon.

.... do ..............................

Discharge 

(sec. -ft.)

17.7 

10.6

175

64.5

12.4

13.0

.6

.8

23.8

11.9

1.1

.5

2.0 

2.4

1.7

.8

1.5

1.6

4.4

4.5

1.3 

2.2

2.8

6.8

10.2

14.9

20.4

14.8

4.2

2.7

Tributaries between Gunnison River and Green River, Utah

May 10

July 13

A 2

19

Sept . 15

Five Creek. ........

.. ..do. ............

Indian Creek. .......

.... do ..............

SWi sec. 4. T. 34 S. , R. 22 E. (unsurveyed), 1 mile northwest of

Indian Creek Guard Station and 10

miles west of Monticello.

surveyed) 1 mile northwest of

Indian Creek Guard Station and 10

miles west of Monticello.

.... do ..............................

2.23

1.76

.57

*.15

*.10

.Field estimate.

Green River Basin, Utah

May 21

July 26

Nov. 28

Feb. 28

May 17

Oct. 3

25

Nov. 29

May 25

Unnamed stream. ....

Stanaker Wash. .....

Duchesne River. ....

... .do. ............

... .do. ............

North diversion of

Hades Creek.

... .do, ............

.... do .............

... .do. ............

East Pork Dry Fork..

Ashley Creek. .......

Green River. ........

.... do ..............

....do. .............

Hades Creek. ........

.... do ..............

.... do ..............

.... do ..............

Sec. 15, T. 2 S., R. 19 E. Salt Lake

meridian, about J mile below gaging station for East Pork Dry Pork

near Dry Pork.

Sec. 35, T. 3 S., R. 21 E. Salt Lake

meridian, about 4 miles north of

Vernal.

Sec. 10, T. 1 S., R. 8 W. Uinta

special meridian, 13 miles (by

road) above gaging station for

Duchesne River near Tabiona.

.... do ..............................

.... do ..............................

Sec. 26, T. 2 N., R. 9 .. Uinta

special meridian, about i mile

above gaging station for Hades

Creek near Hanna.

. ...do. ..............................

.... do ..............................

.... do ..............................

12.1

.6

102

93.3

94.6

2.65

1.16

*2.0

Field estimate.
MISCELLANEOUS DISCHARGE MEASUREMENTS

Miscellaneous discharge measurements in Colorado River Basin during water year 

October 1949 to September 1950--Continued

Green River Basin, Utah .Continued

Date

June 2 

7

15

23

July 27

Oct. 3 

25

15

23

July 27

Oct. 17 

Nov. 10

Dec. 6

Apr. 15

July 5

June 1 

22

July 15

Aug. 4

25

Sept. 15

Stream

North diversion of 

Hades Creek.

....do............

....do............

.... do ............

South diversion of 

Hades Creek.

....do.. ..........

....do.... ........

Pole Creek power 

canal.

....do......... ...

....do......... ...

Paradise ditch. . . . 

.... do ............

....do.... ........

....do............

... .do. ...........

Tributary to or 

diverting from 

Hades Creek. .......

. ...do....... ......

Uinta River. .......

Perron Creek. ......

.... do .............

Locality

Sec. 26, T. 2 N. , R. 9 W. Uinta 

special meridian, about £ mile 

above gaging station for Hades 

Creek near Hanna.

Sec. 26, T. 2 N., R. 9 W. Uinta special 

meridian about 1/8 mile above gaging 

station for Hades Creek near Hanna.

SE-j sec. 23, T. 2 N. , R. 2 W. , 200 feet 

above confluence of Uinta power canal 

and Pole Creek power canal.

SE£ sec. 4, T. 20 S., R. 8 E. Salt Lake 

meridian, about 6 miles east of 

Perron.

....do......... ........................

Discharge 

(sec. -ft. )

*2.0 

*1 3

1.70

1.04

* 5

9.84 

9 91

6.43

3.74

Field estimate.

Tributaries between Green River and Little Colorado River

July 23 

Aug. 2

Sept. 12

Aug. 3

Mar. 23 

May 17

Premont River, .... 

.... do ............

....do............

Escalante River. . .

Dirty Devil River. .

....do. ............ 

Colorado River. ....

NE£ sec. 34, T. 25 S. , R. 2 E. , J mile 

downstream from outlet gates of Pish 

Lake and 10 miles northwest of 

Premont, Utah.

Sec. 20, T. 28 S. , R. 3 E. , Just below 

narrows bridge and about 6 miles 

above gaging station for Premont 

River near Bicknell, Utah. 

Lat. 37°19', long. 110°54', Utah, 5.1 

miles upstream from mouth.

at Vaseys Paradise, at mile 32 below 

Lees Ferry, Ariz.

11.0

1.70 

93.6

Field estimate.

Little Colorado River Basin, Ariz.

July 19

June 14

14

14

July 17

Little Colorado

River.

....do.... ........

... .do. ...........

....do............

Concho Creek. .....

Colorado River. ....

....do...... .......

.... do .............

Little Colorado

River.

At Richville weir, above mouth of

Coyote Creek, about 2 miles above

gaging station for Little Colorado

River above Lyman Reservoir, near

St . Johns .

At mile 13.0 from mouth. ...............

At mile 10. 5 from mouth. ...............

Sec. 18, T. 12 N., R. 26 E. below

springs at head of Concho Reservoir,

3 miles southeast of Concho.

0.26

*5

98.1

196

2.60

Field estimate.

Havasu Creek Basin, Ariz.

May 20 Havasu Creek. ..... Colorado River. .... NW4NW£ sec. 10, T. 33 N. , R. 4 W. . 

below Hualpai (Mooney) Palls, 5j 

miles above mouth.

60.0

Virgin River Basin

July 1 

June 1

Virgin River....

Camp Wash Falls 

Springs.

....do..........

Beaver Dam Wash.

Colorado River....

Virgin River......

Ei sec. 19, T. 13 S., R. 71 E., at 

bridge on U. S. Highway 91, l£ miles 

below Mesquite, Nev., below all diversions for Mesquite and Bunkerville.

Sj sec. 4, T. 40 N., R. 15 W., at mouth. 

Enters river on left bank about ? mile 

above gaging station for Virgin River 

at Littlefield, Ariz. 

.do.

SWj sec. 4, T. 40 N., R. 15 W., at 

mouth. Enters river or Littlefield 

Canal on right side 3/8 mile above 

gaging station for Virgin River at 

Littlefield, Ariz.

1.78

3.03
MISCELLANEOUS DISCHARGE MEASUREMENTS 433

Miscellaneous discharge measurements in Colorado River Basin during water year 

October 1949 to September 1950 Continued

Virgin River Basin Continued

Date

July 1 

June 1

June 1

June 1

Stream

Beaver Dam Wash. . . . 

Littlefield Canal..

Petrified Springs. .

....do.............

Tributary to or 

diverting from--

Virgin River. ...... 

....do.............

....do.............

....do. ............

....do.............

Locality

SW£ sec. 4, T. 40 N., R. 15 W. , at 

mouth. Enters river or Littlefield Canal on right side 3/8 mile 

above gaging station for Virgin 

River at Littlefield, Ariz. 

SW& sec. 4, T. 40 N., R. 15 W. , 

1,000 feet above gaging station for 

Virgin River at Littlefield, Ariz.

Si see. 4, T. 40 N. , R. 15 W. , at 

mouth. Enters river or diversion 

canal on left side about 800 feet 

above gaging station for Virgin 

River at Littlefield, Ariz.

Si sec. 4, T. 40 N. , R. 15 W. , at 

head about 800 feet above gaging 

station for Virgin River at Littlefield, Ariz.

Z miles southwest of Hesquite, Nev.

Discharge 

(sec. -ft.)

2.26

1.03 

1.14

2.32 

2.65

1.38 

2.03

12.1

Gila River Basin, Ariz.

June 20 

.0

20

20

18

20 

20

20 

21

21

21

28 

28 

29

29 

29

Gila River. ........ 

....do. ............

....do.............

East Pork Black 

River.

...,do.............

West Pork Black 

River.

Cibecue Creek. .....

Verde River. ....... 

Sycamore Creek. ....

Hontezuma Well 

(outflow).

West Clear Creek. . .

Colorado River. .... 

....do.............

....do.............

Black River. ....... 

....do.............

....do. ............

... .do..... ........

....do. ............ 

Verde River. .......

Wet Beaver Creek. . . 

Verde River ........

NWfc sec. 16, T. VS., R. 31 E. , at 

Cospers Crossing, 3 miles above 

Apache Grove, near York. 

SWiNEfc sec. 5, T. 7 S. , R. 31 E. , 1.0

mile above Apache Grove, near York.

mile below Apache Grove, near York.

above Juan Miller Creek and 8j 

miles above mouth.

mile below intake of Safford water 

supply and 4 miles above mouth.

San Juan De Las Boquillas Y Nogales 

land grant Just below Babacomari 

River, at bridge on State Highway 

82 at Pairbank.

pumping plant, 2,500 feet below 

Preezeout Creek and 8 miles north 

of Point of Pines.

station, about i mile below large 

spring at bridge on San Carlos-Pt. 

Apache road, 5j miles above mouth. 

SW-J sec. 14, T. 6 N., R. 28 E. , at 

road crossing 14 miles south of 

Eager. 

NW£ sec. 12, T, 4 H. , R. 28 E. , at 

Buffalo Crossing i mile above confluence with West Pork Black River 

and 14 miles southwest of Alpine. 

NW£ sec. 11, T. 4 N., R. 28 E. , 800 

feet below road crossing, li miles 

above confluence with East Pork 

Black River, and 15 miles southwest 

of Alpine.

Apache road, 5 miles above mouth. 

Sec. 24, T. 7 N. , R. 19 E. , 400 feet

below bridge on U. S. Highway 60, 

22 miles above mouth. 

Sec. 31, T. 8 N., R. 18 E. , 100 feet 

below road crossing at Cibecue.

Ranch and 2j miles above mouth. 

See. 36, T. 18 N., R. IE., at highway bridge J mile above Perklnsville. 

SWi sec. 8, T. 17 N., R. 3 E. , i 

mile above mouth and 6 miles northwest of Clarkdale. 

SWjNWi sec. 29, T. 14 N. , R. 5 E. ,

1/8 mile above mouth and 1/8 mile 

below site of former gage at Camp 

Verde. 

Wi sec. 32, T. 15 N. , R. 6 E. , at 

Montezuma Well, 9 miles northeast 

of 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.

0 

2.87

10.3

3.39

1.22

1.16

22.5

38.9

68.8

12.5

.58 

6.17

3.64 

20.9

.46

1.71 

2.67

20.1 

10.0 

5.70

2.36 

11.1
434 MISCELLANEOUS DISCHARGE MEASUREMENTS

Miscellaneous discharge measurements In Colorado Rl-ver Basin during water year 

October 1949 to September 1950 Continued

Glla River Basin Continued

Date

June 18

18

Stream Tributary to or 

diverting frora-- Locallty

mouth of Black Canyon, at Canon.

mouth of Black Canyon, about 

1 mile below bridge on Arizona 

State Highway 69 at Canon.

mile above mouth, near Canon.

Discharge 

(sec. -ft.)

0

1.07

0
INDEX

Page 

Accuracy of field data and computed

results.............'............. 5-6

Acre-foot, definition of............... 1

Agencies other than Geological Survey,

records collected by............. 12

Agua Fria River at Lake Pleasant Dam,

Ariz. ............. .............. 427

discharge measurements of............ 434

near Mayer, Ariz..................... 426

Alamo, Ariz., Bill Williams River near. 365 

Santa Maria River near............... 366

Alamo Canal at Andrade. Calif.......... 45,56

All-American Canal above Pilot Knobwasteway, Calif.................. 45,50

near Imperial Dam, Ariz.-Calif....... 45,49

Almont, Colo., East River at........... 128

Taylor River at...................... 122

Altonah, Utah, Yellowstone Creek near.273,274 

Alva B. Adams tunnel at East Portal,

near Estes Park, Colo............. 16

diversion by......................... 27,28

Andrade, Calif., Alamo Canal at........ 45,56

Colorado River near.................. 45,47

Animas River above Tacoma, Colo. 

at Durango, Colo.

326

327 

at Farjnington, N. Mex................ 329

at Howardsville,. Colo ................ 325

near Cedar Hill, N. Mex.............. 328

Arapaho Creek at Monarch Lake Outlet,

Colo............... ............... 62

Araz drain, Ariz., return- surface flows

from, to Colorado River.......... 45,57

Ashley Creek at Sign of the Maine, near

Vernal, Utah..................... 243

below Trout Creek, near Vernal, Utah. 241 

near Jensen, Utah.................... 244

near Vernal, Utah.................... 242

South Fork, near Vernal, Utah........ 245

Aspen, Colo., Hunter Creek'near........ 106

Roaring Fork at...................... 104

Baldwin, Colo., Castle Creek near...... 133

Ohio Creek near...................... 131

Bardine, Colo., East Muddy Creek near.. 148 

Muddy Creek at....................... 149

Bartlett Dam, Ariz., Verde River below. 423 

Battle Creek near Slater, Colo......... 232

Bayfield, Colo., Los Pinos River near.. 323 

Vallecito Reservoir near............. 322

Beaver Creek (tributary to Green River

in Wyoming) near Daniel, Wyo..... 190 

Beaver Creek, East Fork (tributary to

Henrys Fork), near Lonetree, Wyo. 21S 

Middle Fork, near Lonetree, Wyo...... 217

West Fork, near Lonetree, Wyo........ 219

Beaver Creek (tributary to San Miguel

River) near Norwood, Colo........ 172

Beaver Creek (tributary to Verde River),

Ariz., discharge measurement of.. 43; 

Beaver Dam Wash', Ariz., discharge

measurements of.................432-432

Bedrock, Colo., West Paradox Creek near 168 

Berthoud Pass ditch, of Colo., diversion

by............................... 27,28

Bicknell, Utah, Fremont River near..... 30r

Big Creek at upper station, near Coilbran, Colo....................... 116

Big Piney, Wyo., Middle Piney Creek

near............................. 201

Big Sandy, Wyo., Big Sandy Creek near.. 204 

East Fork near....................... 199

Silver Creek near.................... 200

Big Sandy Creek at Leckle Ranch, near

Big Sandy, Wyo................... 204

Bill Williams River near Alamo, Ariz... 365 

Bill Williams River Basin, Ariz.,

gaging-station records in.......365-366

Black Canyon Creek, Ariz., discharge

measurement of................... 434

Black Canyon ditch, Utah, diversion by. 28,29

Black Creek above Green Mountain Reservoir, Colo. ...................... 90

Black Gore Creek near Minturn, Colo.... 103

31ack River, Ariz., discharge measurements of......................... 433

East Fork, discharge measurements of. 433 

West Fork, discharge measurement of.. 433 

Willow Creek diversion from, near

Morenci, Ariz.................... 394

Black & McClesky Canal, Ariz., diversion by....................... 371

Blacks Fork near Green Riv-er, Wyo...... 209

near Lyman, Wyo....................... 208

near Millburne, Wyo.................. 206

near Urie, Wyo....................... 207

Blanco, N. Mex., San Juan River near... 308 

Blue River above Green Mountain Reservoir , Colo....................... 79

at Dillon, Colo...................... 78

below Green Mountain Reservoir, Colo.. 81 

discharge measurement of............. 433

Bluff, Utah, San Juan River near....... 311

Bonita Creek, Ariz., discharge measurement of.......................... 433

Boreas Pass ditch, Colo;, diversion by 27,28 

Boulder, Wyo., Boulder Creek near...... 198

New Fork River near.................. 194

Boulder Creek (tributary to Blue River)

near Dillon, Colo................ 88

Boulder Creek (tributary to New Fork 

River) below Boulder Lake, near 

Boulder, Wyo..................... 198

Bright Angel Creek near Grand Canyon,

Ariz............................. 357

Brown Canal, Ariz., diversion by....... 375

Brown Duck Creek near Mountain Home,

Utah............................. 272

Browns Wash near Green River, Utah...... 294

Brush Creek above cave, near Vernal,

Utah............................. 235

near Jensen, Utah.................... 237

near Vernal, Utah.................... 236

Bilckeye Reservoir Outlet near Paradox,

Colo............................. 169

Bull Creek at upper station, near

Molina, Colo..................... 118

Bunkerville Canal, Nev., discharge

measurement of................... 433

Burntfork, Wyo., Burnt Fork near....... 820

Henrys Fork near..................... 215

Burnt Fork near Burntfork, Wyo........< 220

Busk Ivanhoe tunnel, Colo., diversion

by. ............................... 27,28

Buzzard Creek near Collbran; Colo...... 115

California drainage canal, Calif.,

return surface flow from, to

Colorado River................... 45,57

Calva, Ariz., Gila River at............ 376

Cameo, Colo., Colorado River near...... 23

Plateau Creek near.................... 114

Cameron, Ariz., Little Colorado River

near................;............ 347

Camp Wash Falls Springs, discharge

measurements of.................. 432

Candland ditch, Utah, diversion by..... 28,29

Ca-rrizo Creek, Ariz., discharge

measurement of......:............ 433

Carter Creek at mouth, near Manila,

Utah............................. 226

near Manila, Utah.................... 225

Casa Grande Canal. See Florence-Casa

Grande Canal. 

Castle Creek near Baldwin, Colo........ 133

Castle Dale, Utah, Cottonwood Creek

near............................. 299

Perron Creek near.................... 301

San Rafael River near................ 296

Cataract Creek above Green Mountain

Reservoir, Colo.................. 92

435
436 INDEX

Page 

Cebolla Creek at Powderhorn, Colo...... 140

near Lake City, Colo.................. 139J

Cedar Creek tunnel, Utah, diversion by.. 28,29

Cedar Hill, N. Mex., Animas River near. 328

Cedaredge, Colo., Currant Creek near... 152

Leroux Creek near.................... 151]

Surface Creek at...,.....,;.......... 154

Surface Creek near................... 153

Ward Creek near-....................... 156

Cement Creek near Crested Butte, Colo.. 130 

Central, Utah, Santa Clara Creek near.. 361 

Charleston, Ariz., San Pedro River at.. 402 

Cherry Creek (Gila River Basin), Ariz.,

discharge measurement of......... 433

Cherry Creek (San Juan River Basin)

near Red Mesa, Colo............... 335

Chevelon Fork below Wildcat Canyon,

near Winslow, Ariz............... 352

near Winslow, Ariz................... 353

Chromo, Colo., Little Navajo River at.. 318 

Navajo River near.................... 316

Chrysotile, Ariz., Salt River near..... 415

Cibecue Creek, Ariz., discharge measurement of.......................... 433

Cimarron Creek below Squaw Creek, at

Cimarron, Colo................... 144

Cisco, Utah, Colorado River near....... 24

Clark, Colo., Elk River at............. 229

Clear Creek below Willow Creek, near

Winslow, Ariz.................... 354

near Winslow, Ariz................... 355

Cliff, N. Mex., Gila River near........ 368

Clifton, Ariz., Gila River near........ 372

San Francisco River at............... 391

Coal Fork ditch, Utah, diversion by.... 28, 29

Collbran, Colo., Big Creek near........ 116

Buzzard Creek near................... 115

Plateau Creek near................... 113

Colmenero Canal, Ariz., diversion by... 371 

Colona, Colo., Uncompahgre River at.... 157

Colorado River at Glenwood Springs,

Colo............................. 22

at Kite, Utah..................'....... 25

at Hot Sulphur Springs, Colo......... 20

at Imperial Dam, Ariz.-Calif......... 43,45

at international boundary above

Morelos Dam, near Andrade, Calif. 45,47 

at Lees Perry, Ariz.................. 3, 26

at Needles, Calif.................... 36

at Rockwood gate, Calif.............. 45,46

at Yuma, Ariz........................ 44,45

below Davis Dam, Ariz.-Nev........... 35

below Hoover Dam, Ariz.-Nev.......... 33

below Parker Dam, Ariz.-Calif........ 41

below Shadow Mountain Dam, Colo...... 17

diversion from....................... 27-29

near Cameo, Colo..................... 23

near Cisco, Utah..................... 24

near Dotsero, Colo................... 21

near Granby, Colo..................... 19

near Grand Canyon, Ariz.............. 30

nqar Grand Lake, Colo................ 14

near Topock, Ariz.................... 37-38

return surface flows to.............. 45,57

Colorado River and Pilot Knob wasteway

at Rockwood gate, Calif.......... 45,46

Colorado River aqueduct, diversion to.. 41 

Colorado River Indian Reservation, diversion for, near Parker, Ariz... 42 

Colorado River main stem, Colo.-UtahAriz.-Nev.-Calif., gaging-station 

records on....................... 14-47

Columbine Creek above Granby Reservoir,

near Grand Lake, Colo........... 61

Columbine ditch, Colo., diversion by... 27,28 

Colvin-Jones Canal, Ariz.", diversion by 375 

Computations, accuracy of results of... 5-6 

Concho Creek, Ariz., discharge measurement .of.......................... 432

Contents, definition of................ 1

Continental Divide ditch, Colo., diversion by....................... 27

Control, definition of................. 1

Coolidge Dam, Ariz., Gila River below.. 378 

San Carlos Reservoir at.............. 377

Cooper wasteway, Ariz., return surface

flows from, to Colorado River.... 45,57

Cooperation, record of................. 12

Cooperative Canal, Ariz., discharge of. 382

Page 

Cora, Wyo., New Fork River near........ 193

Cornville, Ariz., Oak Creek near....... 425

Cortaro, Ariz,, Santa Cruz River at.... 409

Cottonwood Creek (tributary to Green

River) near Daniel, Wyo.......... 192

Cottonwood Creek (tributary to Indian

Creek) near Monticello, Utah..... 183 

Cottonwood Creek (tributary to Plateau

Creek) at upper station, near

Molina, Colo..................... 117

Cottonwood Creek (tributary to San

Miguel River) near Nucla, Colo... 175 

Cottonwood Creek (tributary to San

Rafael River) near Castle Dale,

Utah............................. 299

near Orangeville, Utah............... 298

Crawford, Colo., Iron Creek near....... 147

Smith Fork near....................... 146

Crested Butte, Colo., Cement Creek near 130 

East River near"...................... 127

Slate River near..................... 129

Crystal Creek.near Maher, Colo......... 145

Crystal River near Redstone, Colo......3, 110

Curecanti Creek near Sapinero, Colo.... 143

Currant Creek (Green River Basin) below

Red Ledge Hollow, near Fruitland,

Utah............................. 265

near Fruitland, Utah. f ............... 266

Currant Creek (Gunnison River Basin)

near Cedaredge, Colo............. 152

Curtis Canal, Ariz., diversion by...... 375

Dallas Creek, East Fork, near Ridgway,

Colo. ............................. 160

Daniel, Wyo., Beaver Creek near........ 190

Cottonwood Creek near................ 192

Green River near...................... 184

Horse Creek near..................... 191

Data, accuracy of...................... 5-6

explanation of....................... 2-5

Davis Dam, Ariz.-Nev., Colorado River

below............................ 35

Lake Mohave at....................... 34

Deep Creek near Lapoint, Utah.......... 282

near Paradox, Colo................... 180

Delta, Colo., Roubideau Creek near..... 161

Uncompahgre River at................. 158

Dillon, Colo., Blue'River at........... 78

Boulder Creek ne-ar................... 88

Rock Creek near...................... 87

Slate Creek near..................... 89

Snake River at....................... 82

Straight Creek near.................. 85

Tenmile Creek at..................... 84

Willow Creek near.................... 86

Dirty Devil River Basin, Utah, gagingstation records in..............302-303

Dixon, Wyo., Little Snake River near... 230 

Dodge-Nevada Canal, Ariz., diversion by 375 

Dolores, Colo., Dolores River .at....... 163

Dolores River at Dolores, Colo......... 163

at Gateway, Colo..................... 165

near McPhee, Colo.................... 164

Dolores River Basin, Colo., gagingstation records in..............163-180

Dome, Ariz., Gila River near...........45,385

Dotsero, Colo., Colorado River near.... 21

Douglas, Ariz., Whitewater Draw near... 430 

Doyleville, Colo., Tomichi Creek near.. 135 

Drainage area, definition of........... .2

Dry Fork above sinks, near Dry Fork,

Utah............................. 246

East Fork of, at mouth, near Dry

Fork, Utah....................... 249

near Dry Fork, Utah................ 248

North Fork of, near Dry Fork, Utah... 247 

Duchesne, Utah, Duchesne River at...... 253

Strawberry River at................... 264

Duchesne River at Duchesne, Utah....... 253

at Myton, Utah. ....................... 254

at.Provo River Trail, near Hanna,

Utah............................. 250

discharge measurements of............ 431

near Hanna, Utah..................... 251

near Randlett, Utah.................. 255

near Tabiona, Utah................... 252

West Fork,- near Hanna, Utah........ .257,258

Duncan Canal, Ariz., diversion

by............................... 371
INDEX 437

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

Durango, Colo., Animas River at... 

Florida River near..............

Eagle Creek (tributary to Gila River)

above pumping plant, near Morenci 

Ariz.............................

near Double Circle Ranch, near

Morenci, Ariz....................

pumpage from.........................

Eagle River at Redcliff, Colo..........

below Gypsum, Colo...................

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

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

East Main Canal, Ariz., return surface 

flows from........................

East Mancos River near Mancos, Colo....

East Muddy Creek near Bardine, Colo....

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

near Crested Butte, Colo.............

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

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

Eleven-mile wasteway, Ariz., return

surface flows from, to Colorado 

River............................

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

Elkhorn, Wyo., Little Sandy Creek near.

Elliott Creek feeder canal to Green

Mountain Reservoir, Colo.........

Enterprise Canal, Ariz., monthly diversion by.......................

Ephraim tunnel, Utah, diversion by.....

Escalante River, Utah, discharge

measurement of...................

 near Escalante, Utah.................

Estes Park, Colo., Alva B. Adams tunnel 

near.............................

Eureka ditch, Colo., diversion by......

Ewing ditch, Colo., diversion by.......

371

327

331

393

392

393

96

97

199

59

45,57

337

148

1 Lza OO

127 

155 

317

45,57

229

205

93

384

28,29

432

304

16

27,28

27,28

Fairview ditch, Utah, diversion by..... 28,29

Fall Creek (Dolores River Basin) near

Fall Creek, Colo................. 172

Fall Creek (Green River Basin) near

Pinedale, Wyo.................... 197

Farm Creek near Whiterocks, Utah....... 278

Farmington, N. Mex., Animas River at... 329

La Plata River near.................. 334

San Juan River at.................... 309

Perron Creek near Castle Dale, Utah.... 301

(upper station) near Perron, Utah.... 300

Five Creek, Utah, discharge measurements of......................... 431

Floods, special reports on............. 11

Florence, Ariz., Gila River near....... 381

Florence-Casa Grande Canal, diversions

to. .............................. 381

Florida River near Durango, Colo....... 331

Fontenelle, Wyo., Fontenelle Creek near 203

Green River near..................... 185

Fontenelle Creek near Fontenelle, Wyo.. 203 

Fort Duchesne, Utah, Uinta River at.... 277

Fort Thomas Canal, Ariz., diversion by, 375 

Fourness Canal, Ariz., diversion by.... 375

Fraser, Colo., Ranch Creek near........ 69

St. Louis Creek near.................

Fraser River at Granby, Colo........... 66

near Winter Park, Colo............... 65

Fremont Pass ditch, Colo., diversion by 27,28 

Fremont River, Utah, discharge measurements of......................... 432

near Bicknell, Utah.................. 303

near Fremont, Utah................... 302

Frisco, Colo., Tenmile Creek at........ 83

Frontier, Wyo., Hams Fork near......... 213

Fruitland, Utah, Currant Creek near...265,266

Water Hollow near.................... 267

Fryingpan Creek at Norrie, Colo........ 107

North Fork, near Norrie, Colo........ 108

Fuchs ditch, Colo., diversion by....... 27,28

Gateview, Colo., Lake Fork at.......... 142

Gateway, Colo., Dolores River at....... 165

Taylor Creek near.................... 178

Geyser Creek near Paradox, Colo........ 180

Gila Gravity Main Canal at Imperial Dam,

Ariz.-Calif...................... 45,

Gila River at Ashurst-Hayden Dam, near

Florence, Ariz................... 381

at Calva, Ariz....................... 376

at Kelvin, Ariz...................... 380

at Winkelman, Ariz................... 379

below Blue Creek, near Virden, N. Mex 370 

below Coolidge Dam, Ariz............. 378

below Gillespie Dam, Ariz........... 383-384

discharge measurements of............ 433

diversions from, in Duncan Valley,

N. Mex.-Ariz..................... 371

in Safford Valley, Ariz............ 375

near Cliff, N. Mex................... 368

near Clifton, Ariz................... 372

near Dome, Ariz......................45,385

near Gila, N. Mex.................... 367

near Laveen, Ariz.................... 382

near Red Rock, N. Mex................ 369

hear Solomon, Ariz..................373-374

See also Gila River and canals, 

ila River Basin, N. Mex.-Ariz., discharge measurements in..........433-434

gaging-station records in...........367-429

Gillespie Canal, Ariz., monthly

diversion by..................... 384

Gillespie Dam, Ariz., Gila River below 383-384 

Glenwood, N. Mex., San Francisco River

near............................. 390

Glenwood Springs, Colo., Colorado-River

at............................... 22

Roaring Fork at...................... 105

old Park, Colo., Homestake Creek at.... 99

Gooseberry Creek near Scofield, Utah... 292 

Gore Creek at upper station, near

Minturn, Colo.................... 101

near Minturn, Colo................... 102

Graham Canal, Ariz., diversion by...... 375

ranby, Colo., Colorado River near..... 19

Fraser River at...................... 66

Granby Reservoir near................ 18

Willow Creek near.................... 64

Granby Reservoir near Granby, Colo..... 18

Grand Canyon, Ariz., Bright Angel Creek

near............................. 357

Colorado River near.................. 30

Grand Junction, Colo., Gunnison River

near............................. 126

Grand Lake, Colo. , Colorado River near. 14 

Columbine Creek near................. 61

East Inlet near...................... 59

Little Columbine Creek at............ 60

North Inlet at....................... 58

Shadow Mountain Reservoir near....... 15

Stillwater Creek near................ 63

Grand River ditch, Colo., diversion by. 27,28

Grand Valley, Colo., Parachute Creek at 112

Parachute Creek near................. Ill

Granite Reef Dam, Ariz., diversions

from Salt River at............... 424

Green Mountain Reservoir, Colo., Black

Creek above...................... 90

Blue River above..................... 79

Blue River below..................... 81

Cataract Creek above................. 92

Elliott Creek feeder canal to........ 93

near Kremmling, Colo........:........ 80

Otter Creek above.................... 91

Green River, Utah, Browns Wash near 1.... 294

Green River at....................... 189

San Rafael River near................ 297

Green River, Wyo., Blacks Fork near.... 209

Green River at Green River, Utah....... 189

at Warren Bridge, near Daniel, Wyo... 184 

near Fontenelle, Wyo................. 185

near Jensen, Utah.................... 187

near Linwood, Utah................... 186

near Ouray, Utah..................... 188

tributaries between, and Little 

Colorado River, discharge 

measurements of.................. 432

Green River Basin, Wyo.-Utah-Colo.,

discharge measurements in........ 431

gaging-station records in...........184-301

Gunnison, Colo., Gunnison River near... 123 

Ohio Creek near...................... 132

Tomichi Creek at..................... 137

Gunnison River at lola, Colo........... 124

below Gunnison tunnel, Colo.......... 125
438 INDEX

Page 

Gunnison River near Grand Junction,

Colo............................. 126

near Gunnison, Colo.................. 123

North Fork, near Somerset, Colo...... 150

tributaries......................58-119,431

discharge measurements of.......... 431

Gunnison River Basin, Colo., gagingstation records in..............120-162

Gunnison tunnel, Colo., Gunnison River

below............................ 125

diversion through.................... 125

Gypsum, Colo., Eagle River below....... 97

Hades Creek near Hanna, Utah......'..... 256

north diversion of, Utah, discharge

measurements of.................431-432

south diversion of, Utah, discharge

measurements of.................. 43S

Hams Fork near Frontier, Wyo........... 213

Hanna, Utah, Duchesne River near......250,251

Hades Creek near..................... 256

Rock Creek near...................... 260

West Fork Duchesne River near........ 257

Wolf Creek above Rhodes Canyon, near. 259 

Hassayampa River at Box dam site, near

Wickenburg, Ariz......'........... ' 429

Havasu Creek, Ariz., discharge measurement of..... j.................... 432

Havasu Lake near Parker Dam, Ariz:-

Calif............................ 39-40

Heiner, Utah, Price River near......... 290

Henderson, Nev., area, discharge to.... 33

Henrys Fork at Linwood, Utah........... 216

near Burntfork, Wyo.................. 215

near Lonetree, Wyo................... 214

Hermosa Creek near Hermosa, Colo....... 330

Hesperus, Colo., La Plata River at...... 332

Kite, Utah, Colorado River at.......... 25

Hobble Creek ditch (lower), Utah, diversion by.'. ..................... 28,29

Hobble Creek ditch (upper), Utah, diversion by....................... 28,29

Holbrook, Ariz., Little Colorado River

at............................... 346

Homestake Creek'at Gold Park, Colo..... 99

"near Redcliff, Colo.................. 100

Hoover Dam, Ariz.-Nev., Colorado River

below............................ 33

Lake Mead at......................... 31-32

Horse Creek near Daniel, Wyo........... 191

Horsefly Creek near Sams, Colo......... 174

Horseshoe Dam, Ariz., Reservoir system

on Verde River at and below...... 422

Verde River above.................... 421

Horseshoe tunnel, Utah, diversion by... 28,29 

Hot Sulphur Spring, Colo., Colorado

River at......................... 20

Howardsville, Colo., Animas River at... 325 

Hunt, Ariz., Little Colorado River

near............................343,344

Hunter Creek near Aspen, Colo.......... 106

Huntington Creek near Huntington, Utah. 295

Ignacio, Colo., Los Pinos River at..... 324

Imperial Dam, Ariz.-Calif., AilAmerican Canal near.............. 45,49

Colorado River at.................... 43,45

diversions and return flows at and

below............................ 48-57

Gila Gravity Main Canal at........... 45,48

Indian Creek above Cottonwood Creek,

near Monticello, Utah............ 182

near Monticello, Utah................ 181

lola, Colo., Gunnison River at......... 124

Iron Creek near Crawford, Colo......... 147

Ironton, Colo., Red Mountain Creek near 159

Jensen, Utah, Ashley Creek near........ 244

Brush Creek near..................... 237

Green River near..................... 187

John August ditch, Utah, diversion by.. 28,29

Jones Canal. See Colvin-Jones Canal.-

Jones Pass tunnel, Colo., diversion by. 27,28

Kahnah Creek near Whitewater, Colo..... 162

Kane Creek, Utah, discharge measurement of........................... 420

Kelvin, Ariz., Gila River at........... 380

Keyser Creek near Leal, Colo........... 76

Kremmling, Colo., Green Mountain Reservoir near........................ 80

La Plata River at Colorado-New Mexico

State line.1..................... 333

at Hesperus, Colo.................... 323

near Farmington, N. Mex........ ^..... 334

La Sal, Utah, Twomile Creek near....... 166

Laguna Dam (Colorado River), Ariz.-

Calif., diversions at............ 45

North Gila Valley Canal at........... 45,55

Lake City, Colo.,-Cebolla Creek near... 139 

Lake Fork (Green River Basin) above 

Moon Lake, near Mountain Home, 

Utah............................. 268

below Moon Lake, near Mountain Home

Utah............................. 270

near Upalco, Utah.................... 271

Lake Fork (Gunnison River Basin) at 

Gateview, Colo.................... 142

Lake Mead at Hoover Dam, Ariz.-Nev..... 31-32

Lake Mohave at Davis Dam, Ariz.-Nev.... 34

Lake Pleasant at Lake Pleasant Dam,

Ariz............................. 428

Lake Pleasant Dam, Ariz., Agua Fria

River at......................... 427

Lake Pleasant at..................... 428

Lapoint, Utah, Deep Creek near......... 283

Larkspur ditch, Colo., diversion by.... .27,28

Larsen tunnel, Utah, diversion by...... 28,29

Laskey Gulch, Colo., discharge measurements of......................... 431

Laveen, Ariz., Gila River near......... 382

Santa Cruz River near................. 410

Leal, Colo., Keyser Creek near......... 76

Williams River near.................. 72

Lees Ferry, Ariz., Colorado River at;.. 3, 26 

Paria River at....................... 339

Leroux Creek near Cedaredge, Colo...... 151

Lily, Colo., Little Snake River near... 231 

Lime Creek at Thomasville, Colo........ 109

at Troutville, Colo.................. 109

Linwood, Utah, Green River near........ 186

Henrys Fork at....................... 216

Little Brush Creek below East Fork

Reservoir, near Vernal, Utah..... 239

near Vernal, Utah.................... 240

Little Colorado River above Lyman Reservoir, near St. Johns, Ariz....... 340

above Zuni River, near Hunt, Ariz.... 343

at Holbrook, Ariz.................... 346

at Woodruff, Ariz.................... 345

below Lyman Reservoir, near St. Johns,

Ariz............................. 342

discharge measurements of............ 432

near Cameron, Ariz................... 347

near Hunt, Ariz...................... 344

tributaries between, and Green River,

discharge measurements of........ 432

Little Colorado River Basin, Ariz.-

N. Mex., discharge measurements 

in............................... 432

gaging-station records in...........340-356

Little Columbine Creek above Shadow

Mountain Reservoir, at Grand Lake, 

Colo............................. 60

Little Navajo River at Chromo, Colo.... 318

Little Sandy Creek near Elkhorn, Wyo... 205 

Little Snake River near Dixon, Wyo..... 230

near Lily, Colo...................... 231

Littlefield, Ariz".,'Virgin River at.... 359

Littlefield Canal, Ariz., discharge

measurements of.................. 433

Lochiel, Ariz., Santa Cruz River near.. 406 

Lonetree, Wyo., East Fork Beaver Creek

near.......'...................... 218

Henrys Fork near..................... 214

Middle Fork Beaver Creek near........ 217

West Fork Beaver Creek near.......... 219

Los Pinos River at Ignacio, Colo....... 324

below Snowslide Canyon, near Weminuche

Pass, Colo. ....................... 321

near Bayfield, Colo................... 323

Lyman, Wyo., Blacks Fork near.......... 208

Lyman Canal below Lyman Reservoir,

near St. Johns, Ariz............. 348

Lyman Reservoir near St. Johns, Ariz... 341

McDowell, Ariz., diversion from Verde

River at......................... 424
INDEX 439

Page 

McNary, Ariz., White River near........ 419

McPhee, Colo., Dolores River near...... 164

Madsen ditch, Utah, diversion by....... 28,29

Maher, Colo'., Crystal Creek near....... 145

Main drain, Ariz., return surface flows

from......................... 45,57

Mancos, Colo., East Mancos River near.. 337 

Middle Mancos River near.......'...... 338

West Mancos River near................ 336

Manila, Utah, Carter Creek near.......225,226

* Sheep Creek near............221,222,223,224

Mason, Wyo., North Plney Creek near.... 201

Maybell, Colo., Yampa River near..'..... 228

Mayer, Ariz., Agua Fria River near..... 426

Meadow Creek near Tabernash, Colo...... 71

Meadow Valley Wash near Panaca, Nev.... 364

Meeker, Colo., White River near........ 283

Mesa Creek near Mesa, Colo............. 119

Middle Mancos River near Mancos, Colo.. 338 

Middle .Piney Creek below South Fork,

near Big Piney, Wyo.............. 202

Millburne, Wyo., Blacks Fork near...... 206

Minnie Maud Creek at Nutter Ranch, near

Myton, Utah........'.............. 286

Minturn, Colo., Black Gore Creek near.. 103 

Gore Creek near.....................101,102

Piney River near..................... 94

Moddle Canal at New Mexico-Arizona

State line, near Virden, N. Mex.. 389 

diversion by......................... 371

near Virden, N. Mex................... 388

Moenkopi Wash near- Tuba, Ariz.......... 356

Moffat tunnel, Colo., diversion by..... 27,28

Molina, Colo., Bull Creek near......... 118

Cottonwood Creek near................ 117

Monarch Lake Outlet, Calif ., Arapaho

Creek at......................... 62

Montezuraa Canal, Ariz., diversion by... 375 

Montezuma Well outflow, Ariz., discharge

measurement of................... 433

Monticello, Utah, Cottonwood Creek near 183 

Indian Creek near.................. ..181,182

Moon Lake Reservoir near Mountain Home,

Utah............................. 269

Morenci, Ariz., Eagle Creek hear......392,393

Willow Creek near...................395,396

Willow Creek diversion from Black

River, ,near....................... 394

Mountain Home, Utah, Brown Duck Creek

near............................. 272

Lake Fork near...................... 268,270

Moon Lake Reservoir near............. 269

Rock Creek near....'...,.............. 261

Mountainview, Wyo., Smith Fork at...... 211

Muddy Creek at Sardine, Colo........... 149

Muddy River near Overton, Nev.......... 363

Myton, Utah, Duchesne River at......... 254

Minnie Maud Creek near............... 286

Naturita, Colo., San Miguel River'at... 171 

Naturita Creek near Norwood, Colo...... 176

Navajo River at Banded Peak Ranch, near

Chromo, Colo..................... 316

at Edith, Colo....'................... 317

Needles, Calif., Colorado River at..... 36

Neola, Utah, Uinta River near.........275,276

Nevada Canal. See Dodge-Nevada Canal. 

New Fork River "Below New Fork Lake,

near Cora, Wyo................... 193

near B'oulder, Wyo..................... 194

Nogales, Ariz., Santa Cruz River near.. 407 

Norrie, Colo., Fryingpan Creek at...... 107

North Fork Fryingpan Creek near...... 108

North Gila Valley Canal at Laguna Dam,

Ariz.-Calif...................... 45,55

North Inlet at Grand Lake, Colo........ 58

North Piney Creek near Mason, Wyo...... 201

Norwood, Colo., Beaver Creek near...... 173

Naturita Creek near.................. 176

Nucla, Colo., Cottonwood Creek near.... 175

Tabeguache Creek near................ 177

Oak Creek near Cornville, Ariz. 

Oaks Park Canal near Vernal, Utah... 

Ohio, Colo., Quartz Creek near......

Ohio Creek near Baldwin, Colo.......

near Gunnison, Colo........;......

Orangeville, Utah, Cottonwood Creek 

near..........................

425

238

138

131

132

298

Page 

Otter Creek above Green Mountain

Reservoir, Colo.................. 91

Ouray, Utah, Green River near.......... 188

Willow Creek near..................... 285

Overton, Nev., Muddy River near........ 363

Pagosa Springs, Colo., Piedra River

near............................. 319

Rio Blanco near....................... 314

Rito Blanco near...................... 315

San Juan River at.................... 306

San Juan River near.................. 305

West Fork San Juan River near.......312,313

Palominas, Ariz., San Pedro'River at... 401

Panaca, Nev., Meadow Valley Wash near.. 364

Parachute Creek at Grand Valley, Colo.. 112

near Grand Valley, Colo.............. Ill

Paradise Creek near Whiterocks, Utah... 281 

Paradise ditch, Utah, discharge measurements of......................... 432

Paradox, Colo., Buckeye Reservoir Outlet near......................... 169

Deep Creek near............'.......... 180

Geyser Creek near.................... 180

West Paradox Creek near.............. 167

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

Parker, Ariz., diversion for Colorado

River Indian Reservation near.... 42

Parker Dam, Ariz.-Calif., Colorado

River below...................... 41

diversions between, and Imperial Dam. 42 

Havasu Lake near...................... 39-40

Parlin, Colo., Tomichl Creek at........ 136

Parshall, Colo., Williams Fork Reservoir near........................ 74

Williams River near.................. 73

Patagonia, Ariz., Sonoita Creek near... 411 

Peridot, Ariz., San Carlos River near.. 400 

Perry Canal, Ariz., diversion by....... 415

Petrified Springs, Ariz., discharge

measurements of.................. 433

Phoenix, Ariz., diversion for, from

Verde River...................... 424

Piedra Pass ditch, Colo., diversion by. 27,28 

Piedra River at Bridge ranger station,

near Pagosa Springs, Colo........ 319

near Piedra, Colo...................'. 320

Pilot Knob wasteway, Calif., AllAmerlcan Canal above.............. 45,50

Colorado River and, at Rockwood gate,

Calif............................ 45,46

near Pilot Knob, Calif............... 45,54

Pine Creek at Pinedale, Wyo............ 195

Pine River. See Los Pinos River.

Pinedale, WyoTTTall Creek near........ 197

Pine Creek at........................ 195

Pole Creek near....................... 196

Piney River below Piney Lake, near

Minturn, Colo.................... 94

near State Bridge, Colo.............. 95

Placerville, Colo., San Miguel River

near............................. 170

Plateau Creek near Cameo, Colo......... 114

near Collbran, Colo.................. H3

Pole Creek below Little Half Moon Lake

near Pinedale, Wyo............... 196

Pole Creek power, canal, Utah, discharge

measurements.of.................. 432

Powderhorn, Colo., Cebolla Creek at.... 140

Price River above Scofield Reservoir,

near Scofield, Utah............... 287

at Woodside, Utah.................... 291

near Heiner, Utah.............'....... 290

near Scofield, Utah. ................. 289

Publications on stream flow by Geological Survey.'.......................6-9,11

by State agencies.....;...,.......... 10-11

Quartz Creek near Ohio, Colo............ 138

Queen Creek at Whitlow dam site, near

Superior, Ariz..................404-405

Raber-Lohr ditch, Colo., diversion by.. 27,28

Ranch Creek near Fraser, Colo .......... 69

near Tabernash, Colo...........'...... 70

Randlett, Utah, Duchesne River near.... 255

Red Mesa, Colo., Cherry Creek near..... 335

Red Mountain Creek near Ironton, Colo.. 159

Red Rock, N. Mex., Gila River near..... 369
440 INDEX

Redcliff, Colo., Eagle River at........ 96

Homestake Creek near................. 100

Turkey Creek at...................... 98

Redington, Ariz., San Pedro River near. 403 

Redstone, Colo., Crystal River near....3, 110

Reeder ditch, Utah, diversion by....... 28,29

Ridgway, Colo., East Pork Dallas Creek

near............................. 160

Rillito Creek near Tucson, Ariz........ 413

Rio Blanco near Pagosa Springs, Colo... 314 

Rito Blanco near Pagosa Springs, Colo.. 315 

Roaring Fork at Aspen, Colo............ 104

at Glenwood Springs, Colo............ 105

Robertson, Wyo., East Fork of Smith

Fork near........................ 210

West Fork of Smith Fork near......... 212

Roc Creek near Uranium, Colo............ 179

Rock Creek (tributary to Blue River),

near Dillon, Colo................ 87

Rock Creek (tributary to Duchesne

River) near Hanna, Utah.......... 260

near Mountain Home, Utah............. 261

Rockwood gate, Calif., Colorado River

and Pilot Knob wasteway at....... -15,46

Roosevelt, Ariz., Salt River near...... 416

Tonto Creek near..................... 420

Roosevelt Dam, Ariz., Reservoir system

on Salt River at and below....... 417

Rosa, N. Mex., San Juan River at..;.... 307

Roubideau Creek at mouth, near Delta,

Colo............................. 161

Runoff in inches, definition of........ 1

Sabino Creek near Tucson, Ariz......... 414

Safford Valley, Ariz., diversions from

Gila River in.................... 375

St. Johns, Ariz., Little Colorado River

near........................... .340,342

Lyman Canal near..................... 348

Lyman Reservoir near................. 341

St. Louis Creek near Fraser, Colo...... 68

Salt River below Stewart Mountain Dam,

Ariz. ............................ 418

diversions from, at Granite Reef Dam,

Ariz............................. 424

near Chrysotile , Ariz................. 415

near Roosevelt, Ariz................. 416

reservoir system on, at and below

Roosevelt Dam, Ariz.............. 417

Sams, Colo., Horsefly Creek near....... 174

San Carlos Reservoir at Coolidge Dam,

Ariz............................. 377

San Carlos River near Peridot, Ariz.... 400

San Francisco River at Clifton, Ariz... 391 

near Glenwood, N. Mex................ 390

pumpage from......................... 393

San Jose Canal, Ariz., diversion by.... 375

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

at Pagosa Springs, Colo.............. 306

at Rosa, N. Mex...................... 307

at Ship Rock, N. Mex. ................ 310

near Blanco, N. Mex.................. 308

near Bluff, Utah..................... 311

near Pagosa Springs, Colo............ 305

West Fork, above Borns Lake, near

Pagosa Springs, Colo............. 312

near Pagosa Springs, Colo.......... 313

San Juan River Basin, Colo.-N. Mex.-

Utah, gaging-station records in.305-338

San Miguel River at Naturita, Colo..... 171 

near Placerville, Colo. .............. 170

San Pedro River at Charleston, Ariz.... 402

at Palominas, Ariz................... 401

discharge measurement of............. 433

near Redington, Ariz................. 403

San Rafael River near Castle Dale, Utah 296 

near Green River, Utah............... 297

San Simon Creek near San Simon, Ariz..397-398 

near Solomon, Ariz................... 399

Santa Clara River above Winsor Dam,

near Santa Clara, Utah........... 362

near Central, Utah................... 361

Santa Cruz River at Cortaro, Ariz...... 409

at Tucson, Ariz...................... 408

near Laveen, Ariz.................... 410

near Lochiel, Ariz................... 406

near Nogales, Ariz................... 407

Santa Maria River near Alamo, Ariz..... 366

Sapinero, Colo., Curecanti Creek near.. 143

Sapinero, Colo., Sapinero Creek at..... 141

Sapinero Creek at Sapinero, Colo....... 141

Sargents, Colo., Tomichi Creek at...... 134

Savery Creek near Savery, Wyo.......... 234

Scofield, Utah, Gooseberry Creek near.. 292 

Price River near....................287,289

Scofield Reservoir near.............. 288

Scofield Reservoir near Scofield, Utah. 288 

Second-feet per square mile, definition

of............................... 1

Second-foot, definition of............. 1

Second-foot-day, definition of......... 1

Sexton Canals, Ariz., diversion by..... 371

Shadow Mountain Dam, Colo., Colorado

River below...................... 17

Shadow Mountain Reservoir near Grand

Lake, Colo....................... 15

Sheep Creek at mouth, near Manila,

Utah............................. 222

lower canal near Manila, Utah........ 224

near Manila, Utah.................... 221

upper canal near Manila, Utah........ 223

Ship Rock, N! Mex., San Juan River at.. 310 

Show Low Creek near Show Low, Ariz..... 351

Shumway, Ariz., Silver Creek near...... 349

Silver Creek (tributary to East Fork)

near-Big Sandy, Wyo.............. 200

Silver Creek (tributary to Little

Colorado River) near Shumway,

Ariz............................. 349

near Woodruff, Ariz.................. '350

Simpson Creek, Colo., discharge

measurements of.................. 431

Slate Creek near Dillon, Colo.......... 89

Slate River near Crested Butte, Colo... 129 

Slater, Colo., Battle Creek near....... 232

Slater Fork near..................... 233

Slater Fork near Slater, Colo.......... 233

Smith Fork (tributary to Blacks Fork)

at Mountainview, Wyo............. 211

East Fork, near Robertson, Wyo....... 210

West Fork, near Robertson, Wyo....... 212

Smith Fork (tributary to Gunnison River)

near Crawford, Colo.............. 146

Smithville Canal, Ariz., diversion by.. 375 

Snake River at Dillon, Colo............ 82

Soldier Springs, Utah, Strawberry

Reservoir near................... 262

Strawberry River near................ 263

Soldier Summit, Utah, White River near. 293 

Solomon, Ariz., Gila River near.-..... .373-374

San Simon Creek near................. 399

Somerset, Colo., North Fork Gunnison

River near....................... 150

Sonoita Creek near Patagonia, Ariz..... 411

Spring City tunnel, Utah, diversion by. 28,29 

Springdale, Utah, North Fork Virgin

River near....................... 360

Squaw Pass ditch, Colo., diversion by.. 27,28 

Stage-discharge relation, definition of 1 

Stanaker Wash, Utah, discharge measurement of.......................... 431

State Bridge, Colo., Piney River near.. 95 

Steamboat Springs, Colo., Yampa River

at............................... 227

Stewart Mountain Dam, Ariz., Salt River

below............................ 418

Stillwater Creek above Granby Reservoir,

near Grand Lake, Colo............ 63

Straight Creek near Dillon, Colo....... 85

Strawberry Reservoir near Soldier

Springs, Utah.................... 262

Strawberry River at Duchesne, Utah..... 264

near Soldier Springs, Utah........... 263

Strawberry River ditch, Utah, diversions

by............................... 28,29

Strawberry tunnel, Utah, diversion by.. 27,28 

Sulphur Spring Valley, Ariz., gagingstation record in................ 430

Sunset Canal above New Mexico-Arizona

State line, near Virden, N. Mex.. 386 

diversion by......................... 31

near Virden, N. Mex.................. 385

Sunset Canal wasteway near Virden,

N. Mex........................... 387

Superior, Ariz., Queen Creek near.....404-405

Surface Creek at Cedaredge, Colo....... 154

at Eckert, Colo...................... 155

near Cedaredge, Colo................. 153
INDEX 441

 Sycamore Creek, Ariz. , discharge 

measurement of.............

Page

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

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

Ranch Creek near.....................

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

177 

71 

70

25;

Tabor ditch, Colo., diversion by....... 27,28

Tacoma, Colo., Animas River above...... 326

Tarbell ditch, Colo., diversion by..... 27,28

Taylor Creek near Gateway, Colo........ 178

Taylor Park Reservoir at TayLor Park,

Colo............................. 120

Taylor River below................... 121

Taylor River at Almont, Colo

below Taylor Park Reservoir, Colo.... 121 

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

at Frisco, Colo......................

North Pork, Colo., discharge measurements of......................... 431

Terms, definition of................... 1-

Thomasville, Colo., Lime Creek at...... 109

Tidwell Canal, Ariz., diversion by..... 375

Tomichi Creek at Gunnison, Colo........ 13

at Parlin, Colo...................... 136

at Sargents, Colo.................... 134

near Doyleville, Colo................ 13i

Tonto Creek above Gun Creek, near

Roosevelt, Ariz.................. 420

Topock, Aria., Colorado River near..... 37-38

Treasure Pass ditch, Colo., diversion

by............................... 27,28

Troublesome Creek near Troublesome,

Colo............................. 77

Troutville, Colo., Lime Creek at-»..... 109

Tuba, Ariz., Moenkopi Wash near........ 356

Tucson, .Ariz., Rillito Creek near...... 41.

Sabino Creek near.................... 414 Willow Creek (tributary to Blue River)

Santa Cruz River at. 408 

Tucson Arroyo at Vine Avenue......... 41!

Tucson Arroyo at Vine Avenue, Tucson,

Ariz............................. 412

Turkey Creek at Redcliff, Golo......... 98

Twenty-one mile wasteway, Ariz., return 

surface flows from, to Colorado 

River............................ 45,57

Twin Creek tunnel, Utah, diversion by.. 

Twin Lakes tunnel, Colo., diversion by. 

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

28,29

27,28

Uinta River above Clover Creek, near 

Neola, Utah....................

at Fort Duchesne, Utah.............

near Neola, Utah...................

Uncompahgre River at Colona, Colo....

at Delta, Colo.

275

277

276

157

158 

Union Canal, Ariz., diversion by....... 375

Upalco, Utah, Lake Fork near.

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

271

179

Urie, Wyo, Blacks Fork near............ 207

Valleeito Reservoir near Bayfield, Colo. 

Valley Canal, N. Mex., diversion by.... 

Vasquez Creek near Winter Park, Colo... 

Verde River below Bartlett Dam, Ariz...

below Tangle Creek, above Horseshoe 

Dam, Ariz........................

discharge measurement of.............

diversion from, for Phoenix, Ariz....

reservoir system on, at and below 

Horseshoe Dam, Ariz.

371

67

423

421

433

424

422

Vernal, Utah, Ashley Creekmear...241,242,243 

Brush Creek near.................... 235,236

Little Brush Creek near.............239,240

Oaks Park Canal'near................. 238

South Fork Ashley Creek near...'...... 245

Virden, N. Mex., CJila River near....... 370

Moddle Canal near...................388,389

Sunset Canal near...................385,386

Sunset Canal wasteway near........... 387

Virgin River at Littlefield, Ariz.:.... 359

at Virgin, Utah...................... 358

discharge measurement of............. 432

North Fork, near Springdale, Utah.... 360

Virgin River Basin, Utah-Ariz., discharge measurements in........... 432

gaging-station records in...........358-364

Ward Creek below Riser Creek, near

Cedaredge, Colo.................. 156

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

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

Weminuche Pass, Colo., Los Pinos River

near.

West Clear Creek, Ariz., discharge

Page 

267 

284

321

433

336

168

167

283 

near Watson, Utah.................... 284

measurement of.

West Mancos River near Mancos, Colo....

West Paradox Creek near Bedrock, Colo..

near Paradox, Colo...................

White River (tributary to Green River),

near Meeker, Colo.

White River (tributary to Price River)

near Soldier Summit, Utah. 293 

White River (tributary to"Salt River)

discharge measurement of......... 433

near McNary, Ariz..................... 419

Whiterocks, Utah, Farm Creek near...... 278

Paradise Creek near.................. 281

Whiterocks River near...............279,280

Whiterocks River above Paradise Creek, 

near Whiterocks, Utah............

near Whiterocks, Utah.

Whitewater, Colo., Kahnah Creek near... 

Whitewater Draw near Douglas, Ariz.....

Wickenburg, Ariz., Hassayampa River

near.............................

Williams Fork Reservoir near Parshall, 

Colo..'...........................

Williams River below.................

Williams River below Williams Fork

Reservoir, Colo. :................

near Leal, Colo......................

near Parshall, Colo..................

South Fork, Colo., discharge measurements of.

near Dillon, Co-lo.

Willow Creek (tributary to Colorado 

River) near Granby, Colo.

279

280

162

430

429

74

75

75

72

73

431

64

Willow Creek (tributary to Eagle Creek), 

near Double Circle Ranch, near 

Morenci, Ariz.................... 396

near Point of Pines, near Morenci,

Ariz.

Willow Creek (tributary to Green River)

395

near Ouray, Utah................. 285

166 Willow Creek ditch, Utah, diversion by. 28,29 

Willow Creek diversion. See Black

River. 

Winkelman, Ariz., Gila River at........ 379

Winslow, Ariz., Chevelon Fork near....352,353 

Clear Creek near....................354,355

Winter Park, Colo., Fraser River near.. 

Vasquez Creek near.

Wolf Creek above Rhodes Canyon, near

65

67

Hanna, Utah. .........'..'.......... 259

Woodruff , Ariz . , Little Colorado River

at.

Silver Creek near. 

322 Woodside, Utah, Price River at.

345 

350 

291

Work, division'of...................... 12-13

scope of.........................,.'.. 1

Wurtz ditch, Colo., diversion'by....... 27,28

Yampa River at Steamboat Springs, Colo. 227

near Maybell, Colo.

Yellowstone Creek below Swift Creek,

near Altonah, Utah.............

near Altonah, Utah.

York Canal, Ariz., diversion by.

228

273

274 

371 

Yuma, Ariz., Colorado River at......... 44,45

.gaging stations in vicinity of....... 45

municipal supply, diversion for...... 52

Yuma Main Canal at................... 52

Yuma Main Canal near................. 45,51

Yuma Main Canal wasteway at.......... 45,53

Yuma Canal, discharge of, at Laguna

Dam, Ariz.-Calif................. 45,55

Yuma Main Canal at siphon-drop power

plant, near Yuma, Ariz........... 45,51

below Colorado River siphon, at

Yuma, Ariz....................... 45,52

Yuma Main Canal wasteway at Yuma, Ariz. 45,53 

Yuma project, Ariz.-Calif., return

surface flows from............... 45,57

*U. S. GOVERNMENT PRINTING OFFICE : O- 1952