UNITED STATES DEPARTMENT OF THE INTERIOR 

HAROLD L. ICKES, Secretary

GEOLOGICAL SURVEY

W. C. MENDENHALL, Director

Water-Supply Paper 929

SURFACE WATER SUPPLY 

of the UNITED STATES

1941

PART 9 c is 

COLORADO RIVER BASIN "3

Prepared under the direction of ..* C. «- 

GLENN L. PARKER, Chief Hydraulic Engineer--^

AND OF ROBERT FOLLANSBEE, J. H. GARDINER, BERK^LE^ JOH|^$ON 

AND A. B. PURTON, District Engineers C - »=

V ,+ ~.».

In cooperation with the States of >, "" * r,r" 

ARIZONA, COLORADO, NEW MEXICO^ UUTAH, AND WYOMING ^ ^. 

and other agencies ,

UNITED STATES

GOVERNMENT PRINTING OFFICE 

WASHINGTON : 1942

For sale by the Superintendent of Documents, Washington, D. C. - - - Price 35 cents (paper cover)
CONTENTS

Page

Scope of work........................................................................ l

Definition of terms.................................................................. l

Explanation of data.................................................................. 1

Accuracy of field data and computed reeults.......................................... 3

Publlcations......................................................................... 4

Records of discharge collected by agencies other than the Geological Survey.......... 9

Cooperation.......................................................................... 10

Division of work..................................................................... 10

Oaglng-statlon records............................................................... 12

Colorado River Basin............................................................... 12

Colorado River main stem......................................................... 12

Colorado River near Grand Lake, Colo........................................... 12

Colorado River near Oranby, Colo............................................... 13

Colorado River at Hot Sulphur Springs, Colo.................................... 14

Colorado River near Dotsero, Colo.............................................. 15

Colorado River at Glenwood Springs, Colo....................................... 16

Colorado River near Cameo, Colo................................................ 17

Colorado River near Cisco, Utah................................................ 16

Colorado River at Lees Ferry, Arlz............................................. 19

Colorado River at Bright Angel Creek, near Qrand Canyon, Ariz.................. £0

Lake Mead at Boulfier Dam, Arlz.-Nev............................................ 21

Colorado River below Boulder Dam, Ariz.-Nev.................................... 22

Colorado River at Needles, Calif............................................... 23

Colorado River near Topock, Ariz............................................... 24

Lake Havasu near Parker Dam, Ariz.-Calif....................................... f.e

Colorado River below Parker Dam, Arlz.-Calif................................... 28

Colorado River near Picacho, Calif............................................. 29

Colorado River at Yuma, Arlz.................................... ^1.............. 30

All-Amerlcan canal near Imperial Dam, Calif................... I................ 31

All-American canal above Pilot Knob waateway, Calif............................ 32

All-Amerlcan canal below Pilot Knob wasteway, Calif............................ 33

Yuma main canal at siphon drop power plant, near Yuma, Arlz.................... 34

Yuma main canal below Colorado River siphon, at Yuma, Ariz..................... 35

Yuma main canal wasteway at Yuma, Ariz......................................... 36

Tributaries above Green River.................................................... 37

Arapaho Creek below Monarch Lake, Colo......................................... 37

Willow Creek near Oranby, Colo................................................. 38

Fraser River near Winter Park, Colo............................................ 39

Fraser River at Granby, Colo................................................... 40

Vasquez Creek near Winter Park, Colo........................................... 41

St. Louis Creek near Fraser, Colo.............................................. 42

Ranch Creek above forks, near Fraser, Colo....................................." 43

Ranch Creek near Fraser, Colo.................................................. 44

Ranch Creek near Tabernash, .Colo............................................... 45

North Fork of Ranch Creek near Fraser, Colo.................................... 46

Middle Fork of Ranch Creek near Fraser, Colo................................... 47

South Fork of Ranch Creek near winter Park, Colo............................... 48

Meadow Creek near Tabernash, Colo.............................................. 49

Strawberry Creek near Qranby, Colo............................................. 50

Williams River below Steelman Creek, Colo...................................... 51

Williams River near Leal, Colo................................................. 58

Williams River near Parshall, Colo............................................. 53

Troublesome Creek at Atraore Ranch, near Troublesome, Colo...................... 54

East Fork of Troublesome Creek near Troublesome, Colo.......................... 55

Muddy Creek near Kremmllng, Colo............................................... 56

Blue River at Dlllon, Colo..................................................... 57

Blue River below Green Mountain Reservoir, near Kremmling, Colo................ 58

Snake River at Dlllon, Colo.................................................... 59

Tenmlle Creek at Dlllon, Colo.................................................. 60

Roaring Fork at Aspen, Colo.................................................... 61

Roaring Fork at Glenwood Springs, Colo......................................... 62

Crystal River near Redstone, Colo.............................................. 63

West Divide Creek below willow Creek, near Raven, Colo......................... 64

Rifle Creek near Rifle, Colo................................................... 65

East Fork of Rifle Creek near Rifle, Colo...................................... 66

Plateau Creek near Collbran, Colo.............................................. 67

Plateau Creek near Cameo, Colo................................................. 68

Buzzard Creek near Helberger, Colo............................................. 69

Buzzard Creek near. Collbran, Colo.............................................. 70

Big Creek below Bonham Reservoir, near Collbran, Colo.......................... 71

Bull Creek near Mollna, Colo................................................... 72

Coon Creek near Mesa, Colo..................................................... 73

Taylor Park Reservoir at Taylor Park, Colo..................................... 74

Taylor River below Taylor Park Reservoir, Colo................................. 75

Taylor River at Almont, Colo................................................... 76

III
IV CONTENTS

Gaglng-station records Continued. 

Colorado River Basin Continued.

Tributaries above Green River Continued. Page

Gunnison River at lola, Colo.................................................. 77

Gunnison River near Grand Junction, Colo...................................... 78

East River near Crested Butte, Colo........................................... 79

East River at Alraont, Colo.................................................... 80

Slate River near Crested Butte, Colo.......................................... 81

Cement Creek near Crested Butte, Colo......................................... 82

Ohio Creek near Baldwin, Colo................................................. 83

Tomichi Creek at Sargents, Colo............................................... 84

Tomlchi Creek at Gunnison, Colo............................................... 85

Quartz Creek near Ohio, Colo.................................................. 86

Cochetopa Creek near Parlin, Colo...,.......................................... 87

Cebolla Creek at Powderhorn, Colo............................................. 88

Lake Fork at Gateview, Colo................................................... 89

Smith Fork near Crawford, Colo................................................ 90

East Muddy Creek near Bardine, Colo........................................... 91

North Fork of GunnJson River near Somerset, Colo.............................. 92

Anthracite Creek near Floresta, Colo.......................................... 93

Leroux Creek near Cedaredge, Colo.............................................. 94

Surface Creek below Park Reservoir, near Grand Mesa, Colo..................'... 95

Surface Creek near Cedaredge, Colo............................................ 96

Surface Creek at Cedaredge, Colo.............................................. 97

Uncompahgre River at Colona, Colo............................................. 98

Uncompahgre River at Delta, Colo.............................................. 99

Roubideau Creek near Delta, Colo.............................................. 100

Roubideau Creek at mouth, near Delta, Colo.................................... 101

Kahnah Creek near Whitewater, Colo............................................ 102

Dolores River at Dolores, Colo................................................ 103

Dolores River near McPhee, Colo............................................... 104

Dolores River at Gateway, Colo................................................ 105

West Fork of Dolores River near Stoner, Colo.................................. 106

Disappointment Creek at upper station, near Cedar, Colo....................... 107

Disappointment Creek near Cedar, Colo......................................... 108

San Mlguel River at Naturita, Colo............................................ 109

Green River Basin............................................................... 110

Green River at Warren Bridge, near Daniel, Wyo................................ 110

Green River near Linwood, Utah................................................ Ill

Green River, at Green River, Utah.............................................. 112

Beaver Creek near Daniel, Wyo................................................. 113

Horse Creek near Dani el, Wyo.................................................. 114

Cottonwood Creek near Daniel, Wyo............................................. 115

East Fork near Big Sandy, Wyo................................................. 116

Silver Creek near Big Sandy, Wyo.............................................. 117

New Fork below New Fork Lake, near Cora, Wyo.................................. 118

New Fork near Pinedale, Wyo................................................... 119

New Fork near Boulder, Wyo.................................................... 120

Willow Creek near Cora, Wyo................................................... 121

Lake Creek near Cora, Wyo..................................................... 123

Duck Creek at Cora, Wyo....................................................... 124

Pine Creek at Pinedale, Wyo................................................... 125

Pole Creek below Little Half Moon Lake, near Pinedale, Wyo.................... 126

Fall Creek near PInedale, Wyo................................................. 127

Boulder Creek below Boulder Lake, near Boulder, Wyo........................... 128

North Piney Creek near Mason, Wyo............................................. 129

Middle Piney Creek below South Fork, near Big Piney, Wyo...................... 130

South Piney Creek near Big Piney, Wyo......................................... 131

Labarge Creek near Labarge Meadows ranger station, Wyo........................ 132

Labarge Creek near Viola, Wyo................................................. 133

Fontenelle Creek near Fontenelle, Wyo......................................... 134

Big Sandy Creek at Leckie Ranch, near Big Sandy, Wyo.......................... 135

Little Sandy Creek near Elkhorn, Wyo........................................... 136

Blacks Fork near Millburne, Wyo............................................... 137

Blacks Fork near Urie, Wyo.................................................... 138

East Fork of Smi/th Fork near Robertson, Wyo................................... 139

West Fork of Smith Fork near Robertson, Wyo................................... 140

Henrys Fork at Linwood, Utah.................................................. 142

Burnt Fork at Burntfork, Wyo.................................................. 143

Yampa River at Steamboat Springs, Colo................................... .... 144

Yampa River near Maybell, Colo................................................ 145

Elk River at Clark, Colo...................................................... 146

Little Snake River near Dixon, Wyo............................................ 147

Little Snake River near Lily, Colo............................................ 148

Savery Creek at upper station near Savery, Wyo................................ 149

Slater Fork near Slater, Colo................................................. 150

Ashley Creek near Vernal, Utah................................................ 151

Duchesne River at Provo River Trail, near Hanna, Utah......................... 152

Duchesne River near Tabiona, Utah............................................. 153

Duchesne River at Duchesne, Utah.............................................. 154

Duchesne River at Myton, Utah................................................. 155

Rock Creek near Mountain Home, Utah........................................... 156

Strawberry River at Duchesne, Utah............................................ 157

Currant Creek near Fruitland, Utah. ........................ ,.t ................ 158

Uinta River near Neola, Utah.................................................. 159

Whiterocks River near Whiterocks, Utah........................................ 160

White River near Meeker, Colo................................................. 161

White River near Watson, Utah................................................. 162

Piceance Creek near Rio Blanco, Colo.......................................... 163

Price River above Scofield Reservoir, near Scofield, Utah..................... 164

Price River near Scofield, Utah............................................... 105
CONTENTS V

Qaglng-statlon records Continued. 

Colorado River Basin Continued.

Qreen River Basin Continued. Page

Price River near Helner, Utah............................................... 166

Huntington Creek near Huntington, Utah...................................... 167

Cottonwood Creek near Orangeville, Utah...................................... 168

Fremont River Basin........................................................... 169

Fremont River below Fish Lake, near Fremont, Utah........................... 169

Fremont River near Bicknell,- Utah........................................... 170

San Juan River Basin.......................................................... 171

San Juan River near Pagosa Springs, Colo.................................... 171

San Juan River at Pagosa Springs, Colo...................................... 172

San Juan River at Rosa, N. Mex.............................................. 173

San Juan River near Blanco, N. Mex.......................................... 174

San Juan River at Farmlngton, N. Mex........................................ 175

San Juan River at Ship Rock, N. Mex......................................... 176

San Juan River near Bluff, Utah............................................. 177

West Fork of San Juan River above Boms Lake, near Pagosa Springs, Colo..... 178

West Fork of San Juan River .near Pagosa Springs, Colo....................... 179

Turkey Creek near Pagosa Springs, Colo...................................... 180

Rio Blanco near Pagosa Springs, Colo........................................ 181

Rlto Blanco near Pagosa Springs, Colo....................................... 182

Navajo River at Banded Peak Ranch, near Chromo, Colo........................ 183

Navajo River at Edith, Colo................................................. 184

Little Navajo River at Chromo, Colo......................................... 185

Pledra River at Bridge ranger station, near Pagosa Springs, Colo............ 186

Pledra River near Pledra, Colo.............................................. 187

Williams Creek near Bridge ranger station, near Pagosa Springs, Colo........ 188

Weminuche Creek near Bridge ranger station, near Pagosa Springs, Colo....... 189

Los Plnos River below Snowsllde Canyon, near Wepiinuche Pass, Colo........... 190

Valleclto Reservoir near Bayfleld, Colo..................................... 191

Los Plnos River near Bayfield, Colo..... ................................... 192

Los Plnos River at Ignacio, Colo............................................ 193

Aniiaas River at Howardsvllle, Colo.......................................... 194

Animas River at Durango, Colo............................................... 195

Animas River near Cedar Hill, N. Max........................................ 196

Animas River at Farmlngton, N. Mex.......................................... 197

Mineral Creek near Sllverton, Colo.......................................... 198

Hermosa Creek near Hermosa, Colo............................................ 199

Llghtner Creek near Durango, Colo........................................... 200

Florida River near Durango, Colo............................................ 201

La Plata River at Hesperus, Colo............................................ 202

La Plata River at Colorado-New Mexico State line............................ 203

La Plata River near Farmlngton, N. Mex...................................... 204

Cherry Creek near Red Mesa, Colo............................................ 205

West Mancos River near Mancos, Colo......................................... 206

Mancos River near Towaoc, Colo............................................... 207

East Mancos River near Mancos, Colo......................................... 208

Middle Mancos River near Mancos, Colo....................................... 209

McElmo Creek near Cortez, Colo.............................................. 210

Parla River Basin............................................................. 211

Paria River at Lees Ferry, Arlz............................................. 211

Little Colorado River Basin................................................... 212

Little Colorado River above Lyman Reservoir, near St. Johns, Arlz........... 212

Lyman Reservoir near St. Johns, Ariz........................................ 213

Little Colorado River below Lyman Reservoir, near St. Johns, Ariz........... 214

Little Colorado River above Zunl River, near Hunt, Ariz..................... 215

Little Colorado River near Hunt, Ariz....................................... 216

Little Colorado River near Woodruff, Ariz................................... 217

Little Colorado River at Grand Falls, Ariz.................................. 218

Sliver Creek near Woodruff, Arlz............................................ 219

Puerco River at Qallup, N. Mex.............................................. 220

Puerco River near Adamana, Arlz............................................. 221

Chevelon Fork near Wlnslow, Arlz............................................ 222

Clear Creek near Wlnslow, Arlz.............................................. 223

Salt Creek near Winslow, Arlz............................................... 22?

Moenkopl wash near Tuba, Arlz............................................... fB5

Bright Angel Creek Basin...................................................... 226

Bright Angel Creek near Grand Canyon, Ariz................................... 226

Virgin River Basin............................................................ 227

Virgin River at Virgin, Utah................................................ 227

Virgin River at Llttlefield, Ariz:.......................................... 228

North Fork of Virgin River near Springdale, Utah............................ 229

Williams River Basin.......................................................... 230

Williams River near Alamo, Arlz............................................. 230

Williams River at Planet, Arlz.............................................. 231

Santa Maria River near Alamo, Arlz.......................................... 232

Date Oreek near Congress, Ariz.............................................. 233

Diversions between Boulder Dam and Imperial Dam............................... 234

Colorado River aqueduct near Parker Dam, Arlz.-Calif........................ 234

Diversion for Colorado River Indian Reservation, near Parker, Arlz.......... 235

Palo Verde canal near Blythe, Calif......................................... 236

Gila River Basin.............................................................. 237

Qila River near 01la, N. Mex................................................ 237

01la River near Red Rock, N. Mex............................................ 238

Gila River below Blue Creek, near Vlrden, N. Mex............................ 239

Gila River at New Mexico-Arizona State line, near Vlrden, N. Mex............ 240

Diversions from Qila River in Duncan Valley, N. Mex.-Ariz................... 241

Qila River near Clifton, Arlz............................................... 242

Qila River near Solomonsvllle, Ariz......................................... 243

Diversions from Gila River in Safford Valley, Arlz.......................... 245

Gila River at Calva, Arlz................................................... 246
VI CONTENTS

Oaglng-station records Continued. 

Colorado River Basin Continued.

Glla River Basin Continued. Page

San Carlos Reservoir at Coolldge Dam, Arlz.................................... 847

Gila River below Coolldge Dam, Arlz........................................... 848

Gila River at Kelvin, Arlz.................................................... 849

01la River at Ashurst-Hayden Dam, near Florence, Arlz......................... 850

Qlla River near Laveen, Arlz.................................................. 851

Glla River below Gillespie Dam, Ariz........................................... 852

01la River near Dome, Arlz.................................................... 854

Sunset canal near Vlrden, N. Hex.............................................. 855

Sunset canal above New Mexico-Arizona State line, near Virden, N. Mex......... '256

Sunset canal wasteway near Virden, N. Hex..................................... 857

Moddle canal near Virden, N. Hex.............................................. 858

Moddle canal at New Mexico-Arizona State line, near Virden, N. Mex............ 859

Shrlver canal at Virden, N. Hex............................................... 860

Valley canal near Virden, N. Mex.............................................. 861

San Francisco River near Olenwood, N. Mex..................................... 862

San Francisco River at Clifton, Arlz.......................................... 863

San Simon Creek near San Simon, Arlz.......................................... 864

San Simon Creek near Solomonsvllle, Arlz...................................... 265

San Carlos. River near Peridot, Artz............................................ 266

San pedro River at Palomlnas, Ariz............................................ 267

San pedro River at Charleston, Ariz........................................... 863

San Pedro River near Mammoth, Arlz............................................ 869

San Pedro River at Wlnkelman, Ariz............................................ 870

Aravalpa Creek near Feldman, Aria............................................. 871

Florence-Casa Qrande canal near Florence, Arlz................................ 272

Queen Creek near Florence Junction, Arlz...................................... 273

Santa Cruz River near Nogales, Ariz........................................... 274

Santa Cruz River at Continental, Arlz......................................... 275

Santa Cruz River at Tucson, Aria.............................................. 276

Santa Cruz River at Rilllto, Ariz............................................. 277

Santa Cruz River near Laveen, Arlz............................................ 278

Sonoita Creek near Patagonia, Ariz............................................ 279

Rilllto Creek near Wrlghtstown, Arlz.......................................... 280

Rilllto Creek near Tucson, Arlz............................................... 281

Sablno Creek near Tucson, Arlz................................................ 282

Pantano Wash near Tucson, Arlz................................................ 283

Salt River near Chrysotlle, Arlz.............................................. 284

Salt River near Roosevelt, Arlz............................................... 285

Reservoir system on Salt River at and below Roosevelt Dam, Ariz............... 286

Salt River at Stewart Mountain Dam, Ariz...................................... 267

Tonto Creek above Oun Creek, near Roosevelt, Arlz............................. 288

Tonto Creek near Roosevelt, Arlz.............................................. 289

Verde River near Camp Verde, Arlz............................................. 290

Verde River below East Verde River, near Pine, Arlz........................... 291

Verde River above Bartlett Reservoir, near Cave Creek, Ariz................... 292

Bartlett Reservoir at Bartlett Dam, Arlz...................................... 293

Verde River above Camp Creek, near McDowell, Arlz............................. 294

Granite Creek near Prescott, Arlz............................................. 295

Oak Creek near Cornville, Arlz................................................ 296

Diversions for city of Phoenix from Verde River, at McDowell, Arlz............ 297

Diversions from Salt River at Granite Reef Dam, Arlz.......................... 297

Agua Fria River near Mayer, Ariz............................................... 298

Agua Frla River at Lake pleasant Dam, Arlz.................................... 299

Lake Pleasant at Lake Pleasant Dam, Arlz...................................... 300

Hassayampa Rlvei* near Wagoner, Ariz........................................... 301

Hassayampa River near Morrlstown, Ariz........................................ 302

Qlllesple canal at Gillespie Dam, Arlz........................................ 303

Enterprise canal at Qlllespie Dam, Ariz....................................... 304

Sulphur Spring Valley............................................................. 305

Whitewater Draw Basin........................................................... 305

Whitawater Draw near Douglas, Arlz............................................ 305

Miscellaneous discharge measurements................................................ 306

 index............................................................................... 307

*

ILLUSTRATION

Page 

Plats 1. Oaglng-statlon structures A, Colorado River at Lees Ferry, Arlz.;

B, Williams River at Planet, Ariz....................................... 2
SURFACE WATER SUPPLY OF THE COLORADO RIVER BASIN, 1941

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, 1941. The work was begun In 188S 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 9,120 gaging stations 

In the United States and also at many gaging stations In Alaska and Hawaii. In July 1941, 

4,860 gaging stations were being maintained by the Geological Survey and cooperating organizations. Miscellaneous discharge measurements were made 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 acknowledged in connection with the description of each station affected; cooperation of the second kind Is acknowledged on page 10.

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 rater 

draining from it in a given period were uniformly distributed on Its surface. It Is used 

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.

"Second-foot-day" is the volume of water represented by a flow of 1 second-foot for 84 

hours. It Is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 648,317 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.

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

1
2 EXPLANATION OF DATA

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 continuous 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 on plate 1.

Rating tables giving the discharge for any stage are prepared from the discharge measurements. The application of the dally mean gage height to these rating tables gives the 

dally mean discharge, from which the monthly and the yearly mean discharge are computed. 

If the stage-discharge relation is subject to change because of frequent or continual 

change In the physical features that form the control, the daily mean discharge is 

determined by the "shifting-control method," In which correction factors based on Individual discharge measurements are used in applying the gage heights to the rating tables.

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

reservoirs, tributary streams, or other sources, which necessitates the 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 United 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. The days 

included In the periods of ice effect and the days during the winter period on which discharge measurements were made are indicated in the table by symbols referring to footnotes.

For most of the gaging 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 

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 daily 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, its latitude and longitude 

determined from the best available maps, and information in regard to diversions that 

decrease the flow at the gage, artificial regulation from pondage or storage, and the 

accuracy of the records. Under "Average discharge" is given the average discharge for the 

number of years indicated. It Is given only for stations for which there are 10 or more 

complete years of record. Under "Extremes" are given the maximum discharge and gage 

height; the minimum discharge If there is little or no regulation; the minimum daily discharge If there Is extensive regulation (also the minimum discharge if useful); and the 

minimum gage height (unless it is of no importance). Unless otherwise qualified, the 

maximum discharge corresponds to the crest stage, obtained by use of a water-stage
GEOLOGICAL SURVEY WATER-SUPPLY PAPER 929 PLATE 1

A. COLORADO RIVER AT LEES FERRY, ARTZ. 

Note landing tower.

B. WILLIAMS RIVER AT PLANET, ARIZ.

GAG^G-STATJO^ STRUCTURES.
EXPLANATION OF DATA 3

recorder or a nonrecordlng gage read at the time of the crest. Likewise the minimum discharge represents the lowest stage, unless otherwise qualified. Selected peak discharges 

with the times of their occurrence are given below the table of monthly discharge for some 

stations. This supplementary Information Is generally omitted for stations having drainage areas of less than 10 square miles or more than 10,000 square miles or If the peak 

discharges usually exceed the corresponding mean discharges for the day by less than 10 

percent.

For stations equipped with nonrecordlng gages, the table of dally discharge gives 

the discharge In second-feet corresponding to once-daily readings of the gage or the mean 

of twice-daily readings. For flashy floods the daily mean discharge is determined from 

gage-height graphs based on gage readings made once or twice dally or oftener, as stated 

In the station description. 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 dally mean discharge, vtfilch 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.

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 and not the momentary discharge when the 

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

given Is the minimum dally discharge. The column headed "Mean" gives the average flow 

in cubic feet per second during the month.

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 a few of the 

more important lakes and reservoirs a table showing dally contents 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 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 dally records are accurate within 

5 percent; "good," within 10 percent; "fair," within 15 percent; and "poor," within 20 or 

a higher percent.

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 "secondfeet 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
4 ACCURACY OK FIELD DATA AND COMPUTED RESULTS

satisfactory adjustments can be made for changes In contents cf reservoirs cr for other 

changes Incident to use and control. Figures of second-feet per square mile and runoff 

In Inches are also omitted If the drainage area Includes large ncncontrlbutlng areas or 

If the average annual rainfall over the drainage area Is less than 80 Inches.

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 etatlon. The table of dally 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 Qulf 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.

6. Western oulf cf Mexico basins.

9. Colorado River Basin.

10. The oreat 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 ether 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 local offices of the water-resources 

branch cf the Geological Survey as follows:

East of the Mississippi River:

Albany, N. Y., 526 Federal Building.

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

Atlanta, Qa., 5 North Rhodes Center.

Augusta, Maine, Statehouse.

Baton Rouge, La., 124 Geology Building, Louisiana State University.

Boston, Mass., 945 Post Office Building.

Charleston, W. Va., 408 Union Building.

Charlottesvllle, Va., House 0, Dawson Row, University of Virginia.

Chattanooga, Tenn., 442 Post Office Building.

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

Columbia, S. C., 119 United States Courthouse.

Columbus, Ohio, 404 Engineering Experiment Station, Ohio State University.

Harrlsburg, Pa., 490 Education Building.

Hartford, Conn., 225 Capitol Building, 410 Asylum Street.

Indianapolis, Ind., 511 Board of Trade Building.

Jackson, Miss., 208 Mlllsaps Building.
PUBLICATIONS

Louisville. Ky., 652 Federal Bulldl'ng.

Madison. Wls., 666 State Office Building.

Montgomery, Ala., 507 Post Office Building.

Ocala, Fla., 302 Post Office Building.

St. Paul, Mlnn., 80S New Post Office Building.

Trenton, N. J., 228 Federal Building.

Urbana, 111., 14 Post Office Annex, EM Street.

West of the Mississippi River:

Austin, Tex., 302 West 15th Street.

¥olse, Idaho, 429 Federal Building.

Denver, Colo., 230 Customhouse.

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, 506 Hydraulic Laboratory, University of Iowa.

Lincoln. Nebr., 1404 Statehouse.

Los Angeles, Calif., 0-33 United States Post Office and Courthouse.

Oklahoma City, Okla., 303 Capitol Office Building.

£KnMo.?rM?ssou°rf ^logclfsurvey^ildlng, Missouri School of Mines

and Metallurgy.

St. Louis, Mo., 926 New Federal Building. 

Salt Lake City, Utah, 303 Federal Building. 

San Francisco, Calif., 625 Market street Building. 

Santa Fe, N. Mex., 204 United States Courthouse. 

Tacoma, Wash., 1100 Washington Building. 

Topeka, Kans., 305 Federal Building. 

Tucson, Arlz., 210 Post Office Building.

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

Director, Geological Survey, Washington, D. C.

Records of flow of streams In the United States have been published In the reports 

tabulated as follows:

Stream-flow data In reports of the Geological Survey 

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

Report

10th A 

llth A 

12th A 

13th A 

14th A 

B 131.

pt. 2

pt. 2

pt. 2

pt. 3

pt. 2

16th A, pt. 

B 140......

W 11 .......

13th A, pt.

A, pt. 4

LOth A, pfc. 

W r.'j to 39.

21 «t A, pt. 

W 41? to 52.

88d A, pt. 

W 65, 66..

Character of data

Descriptive information only.

Monthly discharge and descriptive information.

....do........................................

.do.

Monthly discharge (long-time records, 1871-93).. 

Descriptions, measurements, gage heights, and

ratings.

Descriptive Information only. 

Descriptions, measurements, gage heights,

ratings, and monthly discharge (also many data

covering earlier years). 

Gage heights (also gage heights for earlier

years). 

Descriptions, measurements, ratings, and monthly

discharge (also similar data for some earlier

years). 

Descriptions, measurements, and gage heights of

streams east of the Mississippi River and

Missouri River and tributaries above Kansas

River. 

Descriptions, measurements, and gage heights of

streams west of the Mississippi River except

Missouri River and tributaries above Kansas

River. 

Descriptions, measurements, ratings, and monthly

discharge (also some long-time records). 

Measurements, ratings, and gage heights of

streams eaat of the Mississippi River and

Missouri River and tributaries. 

Measurements» ratings, and gage heights of

streams west of the Mississippi River except

Missourl-~J?iver and tributaries. 

Monthly discharge (also for many earlier years). 

Descriptions, measurements, gage heights, and

ratings. 

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

Descriptions, measurements, gaffe heights, and

ratings. 

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

Descriptions, measurements, gage heights, and

ratings. 

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

1884 to Sept. 1890 

1834 to June 30, 1891. 

1884 to Dec. 31, 1892. 

1368 to Dec. 31, 1893. 

1893-94.

1896. 

1895-96.

1899.

1900.

1900.

1901.

1901.

ports containing records for years after 1901 are given in table on page 6.

the following page fivep, by years and drainage basins, the numbers of 

irface water supply pjt. Msbed from 1899 to 1941. The data Tor any parv.'lli, in general le fuujid in ttie reports covering the years during
Numbers of water-supply papers containing results of stream m

(For basins included see p. 4)

Year

1899 a . 

1900 g . 

1901. 

1902.

1904. 

1905. 

1906. 

1907-8 . 

1909.

1910. 

1911. 

1912. 

1913. 

1914.

19i5. . 

1916. 

1917.' . 

1918. 

1919-20 .

1921 . 

1922. 

1923 . 

1924. 

1925. .

1926. 

1927. 

1928. 

1929 . 

1930. .

1931 . 

1932. 

1933. 

1934. 

1935.

1936. 

1937. 

1938. 

1939. 

1940. 

1941.

1

35 

47, h48 

65, 75 

82 

97

0124, p!25, q!26 

0165, p!66, q!67 

0201, p202, q203 

241 

261

281 

301 

321 

351 

381

401 

431 

451 

471 

501

541 

561 

581 

601

621 

641 

661 

681 

696

711 

725 

741 

756 

781

801 

821 

851 

871 

891 

921

2

b35, -36 

48 

65, 75 

b82, 83 

Jl97A 98

q!26, 127 

q!67, 168 

a 203, 204 

242 

262

282 

302 

322 

352 

382

402 

432 

452 

472 

502

542 

562 

582 

602

622 

642 

662 

682 

697

712 

727 

742 

757 

782

802 

822 

852 

872 

892 

922

3

36 

48, 149 

65, 75 

83 

98

128 

169 

205 

243 

263

283 

303 

323 

353 

383

403 

433 

453 

473 

503

543 

563 

583 

603

623 

643 

663 

683 

698

713 

728 

743 

758 

783

803 

823 

853 

873 

893 

923

4

36 '49 

65, 75 

m82, 83 

97

129 

170 

206 

244 

264

284 

304 

324 

354 

384

' 404 

434 

454 

474 

504

544 

564 

584 

604

624 

644 

664 

684 

699

714 

729 

744 

759 

784

804 

824 

854 

874 

B9.4. 

924

5

36 

49 

k65, 66, 75 

k83, 85

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 

730 

745 

760 

785

805 

825 

855 

875 

895 925'

6

036, 37 

49, J50 

66, 75 

84 

99

130, r!31 

172 

208 

246 

266

286 

306 

326 

356 

386

406 

436 

456 

476 

506

526 

546 

566 

586 

606

626 

646 

666 

686 

701

716 

731 

746 

761 

786

806 

826 

856 

876 

896 

926

7

37 

50 

k65, 66, 75 

k83, 84 

k98, 99

k!28, 131 

k!69, 173 

k205, 209 

247 

267

287 

307 

327 

357 

387

407 

437 

457 

477 

507

527 

547 

567 

587 

607

627 

647 

667 

687 

702

717 

732 

747 

762 

787

807 

827 

857 

877 

897 

927

6

a Rating tables and Index to Water-Supply Papers 35-39 contained In Water-Supply 

Paper 39. Tables of monthly discharge for 1899 In 21st Annual Report, part 4.

b James River only.

c Qallatln River.

d Green and Qunnlson Rivers and Colorado River above Qunnlson River.

e M9Jave River only.

f Kings and Kern Rivers and south Pacific slope basins.

g Rating tables and index to Water-Supply Papers 47-52 and data on precipitation, 

wells, and irrigation in California and Utah contained in Water-supply Paper 52. 

Monthly discharge for 1900 in 22d Annual Report, part 4.

h Wlssahlckon and Schuylklll Rivers to James River.

i Scloto River.

j Loup

k Trib

m Lake 

n Huds

o New 

p Huds

q Susq

r Flat

s The 

Basins.

t Belo

u Rogu
PUBLICATIONS

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 Papers 283, 303, 323, 353, 

403, 433, 453, 473, 503, which contain records for the Ohio River Basin for those years.

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 19C4 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. 6), contains a summary of yearly discharge at gaging 

stations In the area covered by that report. Gaging stations at which 10 or more complete years of record have been collected are represented.^ These summaries are available 

also as separate reprints.

From tine to time 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 In alphabetical order by States and drainage 

basins.

Reports containing compilation of discharge by States and drainage basins

Water-Supply 

Paper

107

29S

299

300

447

597-B

656-D

636-B

6S7-A

74

197

415

230

370

850

424

492

S70

469

395

617

617

618

198

491

536

279

192

3E8

491

109

Year 

ending

1903

1912

1912

1912

191S

1927

1927

1927

1927

1900

1905

1915

1906

1910

1937

1916 

1919

1935

1921

1914

1927

1920

192S

1906

1917

1920

1909

1906

1913

1917

1904

State or drainage basin and title

STATE

Alabama, Water powers of, with an appendix on stream Measurement a

in Mississippi.

California, Mater resources of, part 1, stream measurements in

Sacramento River Basin.

California, Water resources of, part 2, Stream measurements in

San Joaquin River Basin.

California, Water resources of, part 3, stream measurements in

the Great Basin and Pacific coast river basins.

California, southern, Surface water supply of Pacific slope of.

California, Surface water supply of Sacramento River Basin.

California, Surface water supply of San Joaquin River Basin.

California, southern, Surface water supply of Pacific slope

basins in.

California, Surface water supply of minor San Francisco Bay,

northern Pacific, and Great basins in.

Colorado, Water resources of.

Georgia, Water resour es of.

Massachusetts, Surfac waters of.

Nebraska, Surface wat r supply of.

Oregon, Surface water supply of.

Texas, Summary of rec rds of surface waters of.

Vermont, Surface wate s of. 

Washington, Summary of hydrometric data in.

Washington, Summary of records of surface waters of.

Wyoming, Surface waters of, and their utilization.

DRAINAGE BASIN

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

utilization.

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

Great Salt Lake Basin, Water powers of.

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

Kennebec River Basin (Maine), Water resources of.

Milk River. (See St. Itery and Milk Rivers.)

New-Kanawha River Basin (H. C., Va., W. Va.), Surface Water

Supply of.

Penobscot River Basin (Maine), Water resources of.

Potomao River Basin (p. C., Md., W. Va.)

Rio Grande Basin (Colo., H. Hex., Tex.), Water resources of, 1388-

1913.

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

Susquehanna River Basin (Pa., Md.,), Hydrography of.

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 table on following page contains a 

list of these reports.
 PUBLICATIONS

tate reports containing compilation of records of discharge

State

Alabama . . . . . 

Arkansas.... 

Connecticut*

Georgia.....

Illinois....

Indiana. ....

Kentucky. . . . 

Maryland....

Minnesota... 

Missouri....

Nebraska. . . .

Hew Jersey..

Hew Mexico.. 

North Carolina.

North Dakota

Pennsylvania

Tennessee.. 

Do.......

DO....!..

Virginia.... 

Washington. . 

Wisconsin...

Year 

ending

1915 

1928 

1926

1933a

1906 1920b 

1911 

1934 

1927

1930"

1938 

1919. 

1924d

1935f 

19398 

1920 

1937

1912 

1926 

1939° 

1914

1928 1 

1928

1934 i

1925 

1923

1936k 

1920

19271 

1921n

1939"

1914 

1924° 

1930P 

19364 

1911 

1932r 

1924 

1930"

1905 

1910 

1916 

1927

1933 

1914

1923*

Report

Bull. IV, Water powers of Alabama....

Bull. 44, Water resources of 

Connecticut.

Bull. 16, Water powers of Georgia..,. . 

Bull. 33, Water powers of Georgia.... 

Water resources of Illinois. .........

Pub. 72, Surface water supply of 

Indiana . 

Pub. 112., Surface water supply of 

Indiana.

Surface waters of Kansas. ............

Flow data and draft storage curves 

for major streams In Maryland.

Water-resouroes Investigation of 

Minnesota. 

Vol. 20, 2d series. Water resources 

of Missouri. 

Vol. 26, 2d series. Surface waters 

of Missouri.

Bull. 33, Surface water supply of 

Hew Jersey. 

Special Report 5, Surface water 

supply. of New Jersey. 

Surface water supply of New Nexlco... 

Bull. 34, Discharge records of North 

Carolina streams. 

Bull. 39, Discharge records of North 

Carolina streams. 

Report to Governor of North Dakota 

on flood control. 

Surface water In North Dakota. .......

Bull. 200, Compilation of stream-flow 

records of Ohio.

Bull. 4, Water resources of the State 

of Oregon. 

Bull. 7, Water resources of the State 

of Oregon.

of Oregon.

of Oregon. 

Report of the Water Supply Commission 

of Pennsylvania'. 

Stream-flow records of Pennsylvania..

Bull. 34, Water resources of 

Tennessee. 

Bull. 40, Surface waters of 

Tennessee. 

5th biennial report, State Engineer. . 

7th biennial report, State Engineer.. 

10th biennial report. State Engineer.

Virginia. 

Bull. 6, Monthly and yearly summaries 

of hydronetrlc 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

Geological Survey of Alabama. 

Arkansas Geological Survey. 

State Geological and Natural 

History Survey. 

Connecticut State Water 

Commission. 

Geological Survey of Georgia. 

Do. 

Rivers and Lakes Commission. 

Division of Waterways. 

Department of Conservation.

Do.

Iowa State Planning Board. 

Kansas Water Commission. 

Do. 

Kansus State Board of 

Agriculture . 

Do. 

Do. 

Kentucky Geological Survey. 

State Planning Commission 

and Water Resources Commission. 

State Drainage Commission.

Nlssouri Geological Survey 

and Water Resources. 

Do.

Bureau of Water Power, Irrigation, and Drainage. 

Do. 

Department of Conservation 

and Development. 

State Water Policy 

Commission. 

Office of the State Engineer. 

Department of Conservation 

and Development. 

Do.

State chief engineer.

State Planning Board. 

Engineering Experiment Station, Ohio State University. 

Department of Agriculture, 

Division of Conservation 

and Natural Resources. 

Office of the State Engineer.

Do. 

Do. 

Do.

Water Supply Commission of 

Pennsylvania . 

Department of Forests and 

Waters. 

Department of Education.

Do.

Office of the State Engineer. 

Do. 

Do. 

Conservation Commission.

Department of Conservation 

and Development. 

Railroad Commission of 

Wisconsin.

Do.

a includes records of monthly discharge k includes records for years 1889-1933; 

In second-feet per square mile for records of dally and monthly dlsyears 1912-33. charge are not included* 

b Includes cords for years 1907-18. 1 includes records for years 1882-1937. 

c Includes cords for years 1927-30. B Includes all available records prior to 1921 

d Includes cords for years 1919-24. n Includes records for years 1902-39. 

e Includes cords for years 1924-28. o Includes records for years 1914-24. 

f Includes cords for years 1928-3B. p Includes records for years 1924-30. 

g Includes cords for years 1936-39. q Includes records for years 1930-36. 

h Includes cords for years 1927-39. r Includes records for years 1928-32. 

i Includes oords for years 1914-28. a Includes average weekly discharge for years 

j Includes oords for years 1928-34. 192C-30. 

t Includes records for years 1914-23.

Note.- In addition to the records contained In the repents listed above, the following 

States have issued annual or biennial reports In Which aro contained records of discharge!

California, Colorado, Connecticut, Idaho, Indiana, Missouri, Montana, Nebraska, New Mexico, 

New York (also New York City Board of Water Supply), North Dakota, Oregon, Pennsylvania, 

Nevada, Washington, and Wyoming.
PUBLICATIONS 9

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 otage 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 

reports also contain other pertinent hydrclogie 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 Title 

Paper

88 The Passalc flood of 1902.

92 The Passalc flood of 1903.

96 Destructive floods In the United States In 1903.

147 Destructive floods In the United States In 1904.

162 Destructive floods In the United States In 1906.

334 The Ohio Valley flood of March-April 1913.

426 Southern California floods of January 1916.

487 The Arkansas River flood of June 3-5, 1921.

488 The floods In central Texas In September 1921.

520-0 Some floods In the Rocky Mountain region.

636-C The New England flood of November 1927.

771 floods In the United States, magnitude and frequency.

773-E The New York State flood of July 1936.

796-6 Flood on Republican and Kansas Rivers, May and June 1936.

796-C Flood In La Canada Valley, Calif., January 1, 1934.

796-0 Major Texas floods of 1936.

798 The floods of March 1936, Part 1, New England Rivers.

799 The floods of March 1936, Part 2, Hudson River to Susquehanna River region.

800 The floods of March 1936, Part 3, Potomac, James, and upper Ohio Rivers.

816 Major Texas floods of 1936.

836-A Stages'and flood discharges of the Connecticut River at Hartford, Conn.

838 Floods of Ohio and Mississippi Rivers, January-February 1937.

642 Floods In Canadian and Pecos River Basins of New Mexico, May and June 1937.

843 Floods of December 1937 In northern California.

844 Floods of March 1938 In southern California.

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

867 Hurricane floods of September 1938.

669 Flood of August 1936 In Musklngum River Basin, Ohio.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The following table contains a list of gaging stations for the area covered by this 

report at which records of dally discharge were collected during the water year October 

1940 to September 1941 by agencies other than the Geological Survey. The records for 

these stations are not contained in publications of the Geological Survey, nor have they 

been published elsewhere, but they are available in the files of the organizations named. 

Records of dally discharge collected by agencies other than the Geological Surrey

Stream

Do...............

Big (Kolob) Creek.... 

Boulger Creek. .......

Brush Creek. ......... 

DO............... 

Cascade Creek. .......

Gooseberry Creek. ....

Moody Oracle. ......... 

Santa Olara Creek....

Do ............... 

Co............... 

£0.. .... .jf,-,. ....

Sheep Orsek (North 

Pork) .

Location

Utah.

Below Dry Fork, near Vernal, Utah...... 

Kolob Mountain, near Virgin, Utah...... 

Hear propoaed diversion, 9 miles eaat 

of Palrvlew, Utah. 

Buokle Ranch, near Jenaen, Utah*....... 

Tyzaoh Ranch, near Vernal, Utah........ 

Hear Taooma, Oolo.f. ...................

Gooseberry upper dam alte, near Pairview, Utah.

Utah.f 

Lower dam alte, near Central, Utah.... 

Below Wins or Dam, near Santa Clara, 

Dtah. 

Hear Gunlook, Utah. ................... 

Hear Central , Utah. ................... 

Pine Valley, Utah. .................... 

Above Lucerne Valley oanal, near 

Manila, Utah.

Period

1939-41 

1939-41 

1938-41

1939-41 

1939-41 

1986-41

1928-39, 

1931. 

1928-41

1939-41 

1939-41

1939-41 

1939-41 

1939-41 

1939-41

Collected by

Do. 

Do. 

Do.

Do. 

Do. 

Western Colorado Power Co.

Bureau of Reclamation and 

Water Storage 

0 omission.

Do. 

Do.

Do. 

Do. 

Do. 

Do.

t Former Geological Surrey station.
10 RECOKDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

Records of dally discharge collected by agencies other than the Geological Survey Continued

Stream

Sheep Creek (North 

Fork). 

Sheep Creek (South 

Fork).

White River (Left 

Fork).

Location

Below Lucerne Valley canal 

Manila, Utah. 

Above Lucerne Valley canal 

Manila, Utah.

Soldier Summit, Utah. 

Above forks, near Soldier

, near 

, near

Summit, Utah.

Period

1939-41 

1939-41

1 Q<!tfl«Al

1958-41

Collected

Bureau of Reclc 

Do.

Do.

by

imation.

Hote.- The Soil Conservation Service began In 1936 to make studies of run-off from four areas 

comprising less than 3,000 acres each, two areas comprising between 3,000 and 10,000 acres each, 

and two areas comprising between 10,000 and 21,000 acres each In the vicinity of Mexican Springs, 

H. Hex. The records are In the files of that organization.

COOPERATION

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

Arizona (all stations except Virgin River at Littlefield): Office of the State 

Water Commissioner, J. C. Wanslee; Salt River Valley Water Users' Association; 

Metropolitan Water District of Southern California (for certain stations on Colorado 

River below Boulder Dam and on Williams River); the San Carlos Irrigation and Drainage District; and Maricopa County Municipal Water Conservation District No. 1.

Colorado: Office of the State engineer, M. C. Hinderlider; and the Colorado Water 

Conservation Board, C. H. Stone, director.

New Mexico: Office of the State engineer, T. M. McClure; and the New Mexico 

Interstate Stream Commission, T. M. McClure, secretary.

Utah: Office of the State engineer, T. H. Humpherys succeeded by E. H. Watson. 

Wyoming: Office of the state engineer, L. C. Bishop; and the State Planning and 

Water Conservation Board, L. C. Bishop, president.

Financial assistance was furnished by the Corps of Engineers, U. S. Army, for the 

operation of 10 gaging stations In Arizona and 1 in New Mexico.

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

Department of the Interior.

Assistance In collecting the records was rendered also by the following municipalities, 

organizations, corporation's, and individuals:

Arizona: Gila water commissioner, Charles A. Firth, appointed by the United 

States District Court.

Colorado: Denver Board of Water Coranissioners, Bureau of Reclamation, and 

Uncompahgre.Valley Water Users' Association. 

New Mexico: Office of Indian Affairs. 

Utah: National Park Service, Bureau of Reclamation and Utah Power & Light Co.

DIVISION OF WORK

The stream-gaging work was conducted by the water resources branch of the Geological 

Survey, Glenn L. Parker, chief hydjaulic engineer, Carl G. Paulsen, assistant chief 

hydraulic snglneer, and Rudolph G.. Kasel, chief of the division of surface waters. The 

data for the stations In the several States were collected and prepared for publication 

under supervision of district engineers as follows: In Arizona (except for Virgin River 

at Littlefield), in California, in Nevada, and for Puerco River at Gallup, N. Mex., and
DIVISION OF WOPK 11

Olla River below Blue Creek, near Vlrden, N. Mex.,»J. H. Gardlner; In Colorado (except 

for Los Plnos River at Ignaclo), Robert Follansbee, the work being done in collaboration 

with M. C. Hlnderllder, State engineer, and L. T. Burgess, State chief hydrographer; In 

New Mexico (except for the stations named above) and for Los Plnos. River at Ignaclo, 

Colo., Berkeley Johnson; In Utah (except for the stations named below) and for Virgin 

River at Llttlefleld, Arlz., A. B. Purton; In Wyoming and for Green River near Llnwood, 

Utah, and White River near Watson, Utah, Robert Follansbee.

The records were reviewed and the manuscript prepared for publication under the direction of B. J. Peterson, engineer in charge, and M. C. Boyer, associate engineer, 

section of reports.

461676 O-42-2
12 OWING-STATION RWORDS

COLORADO RIVER li/VSIN

COLORADO RIVER MMN STEM 

Colorado River near arand Lake, Colu.

Location,- Water-stage recorder, lat. 40°14', Jong. 105°61'. in ssc. 13, T. 3 N., R. 

" W., half a mllo upstream from Grand Laku outlet and 3 miles south of Grand Lake.

Drainage area.- 101 square miles.

available.- July 1 

to September 1941.

Records available.- July 1904 to September 1,909, September 1910 to September 1918, 

' 1934

Average discharge,.- 20 years, 123 second-feet.

76

Extremes.- Maximum discharge during year, 603 second-feet May 13 height, 4.88 feet)j

minimum daily, 13 second- feet Jan. 8, Feb. 5, 9-17,

1904-9, 1910-18, 1934-41: Maximum discharge, 1.840 cecomi-foet June 15, 10, 1918 

(gage height, 7.0 feet, site and datura thon In use); nnilTOn:, 1.6 second-font July 17, 

19S4 (gage height, 1.8S).

Remarks.- Records good except those for periods of loe effect, which are fair, Diversions above station for Irrigation. Trarismcurrtaln diversions '/y Grand River flitch 

through La Poudrs PaeB to Cache la Poudre f'.lvor Basin,

Discharge, In geoond-feet, water yis*r October 1940 to Sspfceio'ber 1841

Bay

1

' 8

3

4

e

fi

7

8

9

10

11

12

13

14

16

16

17

18

19

20

ei

28

as

84

2D

28

27

28

29

30

31

Oct.

80

86

57

50

413

57

E3

44

44

47

«

 JO

37

.38

»4

3d

31

31

33

!3

152

32

30

31

81

30

30

32

31

33

31

NOT.

£1)

31

Pd

M

S3

35

36

;u

«se

s-t

30".f,

 SB

18

Deo.

21

21

20

80

19

19

19

19

19

n

19

18

IS

18

80 1 IB

2£ 19

281 13 'SB

5"

2ri

84

24S T

S?

SI

20

20

SO

21

21

-

X6

36

16

17

17

16

16

17

17

16

16

16

.16

IS

Jan.

17

18

16

18

18

14

14

13

14

IB

14

14

14

14

15

IS

14

14

14

14

15

16

*16

IS

16

IS

14

14

15

14

14

Fab.

14

14

14

14

14

18

14

14

US

13

»1.3

13

13

13

13

18

13

14

14

14

14

14

14

14

14

16

16

IS

«

_

"

Month

Mav. ................ ............... .....

Water year 1940-4.........

UtiV

1011

14

14

Apr,

we ai

so

so

.14 I LJE

:u

18isM

J fl

15

16

?.4

14

14

3.4

14

14

15

IS

16

16

16

17

1HO

17

IB

18

18

19

20

20

f!j til

81

us

33

»4

38

24

SB

36

28

26

33

23

29

2i 2y

35

51

56

ee

»92

182

157

"

Seoouclfoot-dnys

1,240

789

5SO

SO, 717

 RQQ

3., 129

srTm"

May Juas

1801 307

324 ! :;il

£38

266

t!66

817

130

12C

228

308

370

424

504

632

462

381

384

424

304

351

321

349

335

364

357

366

360

321

307

294 '307

MuxlttUBl

eo

36

21

364

3.3

64

532

293

298

291

E73

RC2

310

876

261!

345

281

£?33

S33

340

it 07

£86

310

333

340

338

315

310

288

273

256

S30

213

136

160

"

July

150

1U4

1«4

107

104

98

06

81

77

71

00

66

SO

86

60

$2

49

47

47

49

_-:..

f ' 87

8V

27

07

£6

."W

M

JH

58

3*5

3S

38

38

31

30

36

46

61

47

40

47! 55

40

35

29?J7

32

89

27

27

27

27

Minimum

30

18

16

10

14

81

13

36

36

3B

9C

39

32

27

25

84

22

lie an

40,0

26.3

17.7

66.6

14.8

ie.6

3B,0

37,6

7G.1

Sept.

22

26

83

28

21

22

84

47,

48

50

61

49

46

64

52

46

41

40

37

32

31

38

40

41

4!!

44

40

33

36

38

-

Run-off In 

acre-feet

2,460

1,560

1,090

41,070

908

770

962

2,260

3,240

54,370

» Winter discharge seoaurement mada on thin df.y, 

Kote.- Sbace-disohBrgs relation affooted by los HOT. 10, 11 3TH7 21~f -- -- - -----.---. i -

14-17, 20-87, Den. 1, S-6, 8 r ?!, 

-23, 26, 29, "Jan. 1-6, 14, 17-20, 6e»K8, Fob. 1-9, Has?, 27. 26, 31, and Apr. 1, 2, B-J.
COLORADO RIVER MAIN STEM 13

Colorado River near Granby, Colo.

Location.- Water-stage recorder, lat. 40°07', long. 105°54', in sec. 22, T. & N., R. 7S

 VL, H miles upstream from Willow Creek and 4 miles nortneast of Oranby.

Drainage area.- 322 square miles.

Records available.- June 1908 to September 1911, May 1934 to September 1941.

Extremes.- Maximum discharge during year, 2,070 second-feet May 14 (gage height, 3.82

-

1908-11, 1934-41: naximum ouscnarge, 4,100 second-feet June 20, 1909 (gage height, 

5.5 feet, datum then in use); minimum occurred during period of Incowplote record tn 

winter.

Remarks.- Records excellent except those for period of ice ai'fect, vrtiU-.h am fair. 

 Diversions above station for Irrigation.

Discharge, In seoond-foet, water year October 1940 to Septemoer

Day

1 

2 

3 

4 

5

6 

7 

6 

9 

10

11 

IS 

13 

14 

15

16 

17 

18 

19

SO

21 

22 

S3 

84 

S5

26 

27 

28 

89 

30 

31

Oct.

234

886 

218 

806 

196

214 

195 

164 

195 

196

lee

180 

166 

156 

147

137 

131 

1S3 

114 

118

106 

104 

99 

96

94

94 

92 

94 

92 

89 

89

NOT.

89 

82 

80 

87 

80

 89 

87 

87 

89 

89

62 

51 

44 

48 

45

50 

62 

60 

54 

68

50 

45 

47 

54 

58

55 

58 

51 

50 

50

Dec.

52 

52 

50 

50

Bl

58 

54 

57 

58 

SB

SO 

47 

43 

34 

32

33 

34 

40 

45 

48

40 

45 

60 

47 

43

44 

84 

45 

54 

58 

68

Jan.

58 

50 

40 

38

37

40 

43 

47 

49 

50

50 

48 

47 

47 

46

45 

43 

42 

42 

42

«43 

44 

45 

46 

42

42 

42 

40 

38 

38 

39

Feb.

39 

33 

33 

38 

34

34 

34 

38 

36 

36

#37 

37 

37 

SO 

35

36 

35 

37 

38 

39

40 

40 

40 

42 

40

42 

42 

38

Month

Dot 

No\ 

Dec

i

,Tar 

Pet 

Mar 

Apr 

Maj 

Jur 

JnU 

Aug 

Oei

\

alendar year 134 Q... ...................

ater year 1940-4

Mar.

38 

39 

40 

40 

39

40 

42 

43 

42 

38

38 

42 

44 

46 

47

47 

48 

50 

55 

58

65

70 

70 

68 

72

80 

84 

82 

«82 

84 

86

Apr.

100 

92 

85 

82 

82

64 

60 

SO 

90 

110

136 

170 

136 

110 

115

133 

187 

105 

92 

88

96 

112 

121 

181 

187

159 

180 

«231 

268 

300

Seoondfoot-days

4,578 

1,893 

1,440

94,035

1,363 

1,038 

1,719 

3,814 

34,395 

39,070 

11,614 

4,761 

3,616

108,301

May

810 

560 

410 

463 

486

445 

365 

330 

365 

504

742 

1,150 

1,600 

1,970 

1,830

1,440 

1,310 

1,470 

1,460 

1,290

1,170 

1,390 

1,370 

1,460 

1,620

1,740 

1,730 

1,550 

1,410 

1,310 

1,330

Maximum

234 

89 

62

1,800

58 

42 

86 

300 

1,970 

1,050 

703 

184 

166

1,970

June

1,400 

1,370 

1,350 

1,390 

1,380

1,290 

1,180 

1,340 

1,280 

1,150

1,010 

908 

902 

934 

1,060

1,250 

1,400 

1,600 

1,850 

1,830

1,710 

1,660 

1,660 

1,550 

1,400

1,300 

1,180 

1,060 

902 

790

July

703 

096 

012 

670 

550

&S8

498 

D04 

504 

492

445 

436 

400

365 

335

320 

310 

391 

280 

282

ESS 

268 

247 

227 

223

231 

223 

208 

201 

190 

180

Minimum

69 

42 

24

84

37 

33 

38 

80 

310 

790 

180 

10582

84

Aug.

166 

16(3 

145 

148 

136

146 

152 

166 

173 

176

173 

180 

176 

162 

146

145 

148 

166 

184

176

170 

166 

162 

156 

148

146 

139 

124 

116 

110 

105

Sept.

103 

100 

06 

90 

86

62 

66

115 

124 

127

133 

139 

145 

156 

166

159 

152 

139 

133 

124

115 

110 

112 

115 

127

124 

118 

115 

112 

112

Vaan Run-off In Mean aore-feet

146 9,080 

63.1 3,750 

46.5 2,660

25V 186,600

44.0 2,700 

37.1 3,060 

55.5 3,410 

127 7.5BO i,n,o 68,aso

1,302 77,490 

375 | 38,040 

154 0,440 

181 7,170

2?>S 316,800

* Winter discharge measurement made on ttils day.

t" Stage-discharge relation affected by Inn »o<r. 14 bo Apr. 10.
14 COLORADO RIVER MAIN STEM

Colorado River at Hot Sulphur Springs, Colo.

Location.- Water-stage recorder, lat. 40°05 f , long. 106°05', In sec. 1, T. 1 N., R. 78 VI., 

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 1925 to September 1928, and October 1933 to September 1941 In reports of U. S. 

Geological Survey. July 1904 to September 1909, September 1910 to September 1924, and 

October 1925 to September 1941 In reports of State enElneer.

Average discharge.- 35 years (1904-9, 1910-24, 1925-41), 698 second-feet.

Extremes.- Maximum discharge during year, 3,790 second-feet May 14 (gage height, 3.83 

feet); minimum dally, 70 second-feet Dec. 14, 15.

1904-9, 1910-24, 1925-41: Maximum discharge, 10,300 second-feet June 15, 1921 

(gage height, 8.7 feet, site and datum then In use); minimum not determined, occurred 

during period of no record In winter.

Remarks.- Records excellent except those for period of Ice effect, which are fair. 

Diversions above station for Irrigation. Transmcuntaln diversion through Pioneer 

bore of Moffat tunnel from Fraser River Basin to South Platte River Basin. Total 

flow diverted during water year 1940-41 was 36,290 acre-feet (see p. 39) for record 

by months). Transmountaln diversion by Grand River ditch through la Poudre Pass to 

Cache la Poudre River Basin.

Rating table, water year 1940-41, except period of ice effect (gage height, In feet,

and discharge. In second-feet) 

(Shifting-control method used Apr. 24 to Hay 5)

0.4 100 1.2 460 2.8 2,080 

.5 ISO 1.4 570 3.2 2,670 

.6 165 1.6 720 4.0 4,100 

.8 245 2.0 1,100 

1.0 340 2.4 1,560

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

Z 

5 

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 

SO 

31

Oct.

351 

335 

315 

295 

2S6

330 

305 

286 

290 

300

290 

272 

258 

237 

225

225 

250 

225 

221 

213

209 

201 

197 

193 

185

185 

185 

181 

177 

177 

181

HOT.

162 

158 

162 

177 

134

*158 

173 

169 

189 

173

124 

100 

82 

74 

78

86 

100 

102 

100 

92

86 

86 

88 

94 

100

96 

94 

92 

92 

96

Dec.

96 

96. 

92 

90 

90

90 

92 

*94 

94 

90

84 

SO 

74 

70 

70

72 

76 

SO 

80 

78

80 

86 

88 

84 

82

84 

80 

82 

88 

90 

96

Jan.

94 

90 

84 

SO 

76

76 

78 

80 

82 

84

84 

S4 

84 

82 

80

eo

78 

78 

76 

76

76 

76 

78 

*79 

80

80 

80 

78 

78 

76 

76

Feb.

76 

76 

78 

78 

SO

80 

S2 

82 

82 

SO

80 

80 

SO 

SO 

82

84 

84 

36 

88 

«89

90 

92 

92 

92 

92

94 

96 

98

Honth

Oct 

No\ 

Dec

C

Jar 

Pet 

Ma: 

Api 

Ma3 

Jur 

Ju3

Aug

Sel

1

luary

11. ....................................

ater year 1940 

liar.

100 

100 

98 

96 

96

100 

102 

104 

104 

102

100 

100 

104 

118 

118

120 

122 

130 

ISO

155

165 

165 

180 

190 

200

195 

205 

260 

#512 

300 

290

Apr.

368 

245 

217 

213 

221

237 

197 

177 

197 

229

245 

335 

384 

281 

276

290 

320 

276 

229 

229

245 

286 

340 

378 

384

428 

486 

591 

680 

720

Secondfoot-days

7,580 

3,517 

2,628

150,822

2,483 

2,373 

4,671 

9,704 

61,693 

56,810 

15,972 

7,618 

5,565

180,614

May

783 

S55 

990 

1,170 

1,080

1,020 

828 

747 

980 

1,280

1,850 

2,220 

2,980 

3,630 

3,430

2,720 

2,420 

15,740 

2,540 

2,250

2,010 

2,220 

2,210 

2,360 

2,460

2,690 

2,640 

2,520 

2,190 

2,040 

2,050

Maximum

351 

189 

96

2,640

94 

98 

312 

720 

3,630 

2,670 

980 

305 

245

3,630

June

2,110 

2,040 

1,970 

1,930 

2,000

1,900 

1,800 

2,010 

1,910 

1,770

1,600 

1,400 

1,460 

1,420 

1,510

1,780 

1,970 

2,190 

2,640 

2,670

2,480 

2,320 

2,320 

2,190 

2,050

1,840 

1,660 

1,460 

1,280 

1,080

July

970 

980 

837 

765 

747

704 

664 

648 

648 

626

584 

558 

546 

522 

528

486 

444 

428 

417 

406

400 

368 

325 

305 

286

325 

320 

310 

286 

276 

265

Aug.

245 

233 

221 

213 

201

272 

233 

254 

250 

268

272 

305 

300 

254 

237

250 

286 

300 

305 

286

272 

263 

254 

241

225

225 

221 

197 

185 

181 

169

Minimum Mean

177 245 

74 117 

70 84.8

69 412

76 80.1 

76 84.8 

96 151 

177 323 

747 1,990 

1,080 1,894 

263 515 

169 246 

127 186

70 495

Sept.

158 

154 

151 

140 

134

130 

127 

181 

217 

213

213 

221 

217 

229 

245

233 

221 

205

197 

185

181 

169 

173 

181 

189

193 

185 

177 

173 

173

Run-off In 

acre-feet

15,030 

6,980 

5,210

299,200

4,920 

4,710 

9,260 

19,250 

122,400 

112,700 

31,680 

15,110 

11,040

358,300

* Winter discharge measurement made this day.

Mote.- Stage-diecharge relation affeoted by ice NOT. 12 to Hap. 29.
COLORADO RIVER MMN STEM 15

Colorado River near Dotsero, Colo.

Location.- Water-stage recorder, lat. 39°39', long. 107°05', In sec. 6, T. 5 S., R.

 W., li miles west of Dotsero and 14 miles downstream from Eagle River.

Drainage area.- 4,390 square miles.

Records available.- December 1940 to September 1941.

Extremes.- Maximum discharge during period, 13,300 second-feet Hay 15 (gage height,

 9.66 feet), from rating curve extended above 8,300 second-fest; minimum dally, 3 

second-feet Dec. 15.

Remarks.- Records excellent except those for periods of ice sffect, which are fair. 

Cooperation.- Gage-height record furnished by The Public Service Co. of Colorado.

Rating table, water year 1940-41, except periods of ice effect (gage height, In feet, 

and discharge, In second-feet)

1.4 

1.6 

1.8 

2.0 

2.2

530

600

700

820

960

2.8 

3.2 

4.1 

5.0 

6.0

1,440 

1,SOO 

2,790 

4,000 

5,550

7.0 

S.O 

9.9

7,380

9,400

13,860

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct. MOT. Dec.

736 

724 

675 

665 

645

655 

650 

640 

655 

665

620 

640 

695 

554 

380

390 

420 

500 

600 

580

560 

554 

548 

540 

620

610 

600 

600 

600 

610 

620

Jan.

540 

600 

470 

450 

470

430 

460 

520 

540 

470

450 

460 

490 

600 

500

4SO 

460 

480 

500 

500

480 

560 

580 

540 

500

560 

540 

540 

520 

540 

560

Feb.

500 

520 

4SO 

480 

490

490 

480 

500 

480 

520

560 

620 

592 

592 

592

596 

588 

600 

615 

620

625 

635 

625 

630 

620

592 

554 

568

Month

Oet 

Hoi 

Dec

C

Jar 

Pel 

Mai 

Api 

Maj 

Jui 

Ju] 

Auj 

Sej

T

<alendar year

Ly. .....................................

he perlo

liar.

610 

635 

635 

615 

615

605 

58S 

592 

620 

542

584 

536 

588 

605 

568

572 

58S 

610 

695 

742

730 

S02 

1,010 

1,170 

1,100

9S4 

897 

883 

1,020 

1,220 

1,170

Apr.

1,140 

1,270 

1,190 

1,100 

1,180

1,220 

1,140 

976 

897 

918

1,020 

1,060 

1,250 

1,600 

1,290

1,210 

1,180 

1,230 

1,160 

1,020

925 

932 

968 

1,100 

1,260

1,380 

1,570 

1,820 

2,060 

2,340

Secondfoot-days

18,551

-

15,610 

15,764 

23,131 

37,306 

239,860 

215,500 

74,920 

37,056 

29,960

-

May

2,530 

2,710 

3,380 

4,540 

4,690

4,120 

3,690 

3,310 

3,760 

4,990

6,490 

6,080 

10,300 

12,500 

12,800

11,400 

10,100 

10,500 

11,200 

9,800

8,360 

6,360 

8,720 

9,230 

9,710

9,770 

10,200 

9,600 

8,720 

8,220 

8,060

Majtljnuia

736

-

580 

635 

1,22,0 

2,340 

12,800 

9,360 

4,260 

1,460 

1,190

-

June

8,220 

8,020 

7,660 

7,940 

8,100

7,740 

7,460 

7,500 

7,300 

6,460

6,560 

5,640 

5,050 

5,040 

5,230

5,690 

6,440 

7,540 

6,800 

9,360

9,150 

6,720 

8,340 

8,300 

8,060

7,920 

6,790 

6,060 

5,420 

4,770

July

4,260 

3,930 

3,790 

3,550 

3,360

3,180 

3,010 

3,000 

2,870 

2,740

2,590 

2,450 

2,500 

2,440 

2,260

2,180 

2,160 

2,070 

1,970 

2,060

2,100 

1,980 

1,830 

1,730 

1,670

1,600 

1,600 

1,630 

1,560 

1,460 

1,380

Minimum

380

-

430 

480 

536 

S97 

2,530 

4,770 

1,380 

911 

718

-

Aug.

1,300 

1,200 

1,130 

1,070 

1,040

1,010 

1,100 

1,260 

1,180 

1,190

1,180 

1,340 

1,360 

1,380 

1,260

1,230 

1,300 

1,460 

1,420 

1,390

1,330 

1,300 

1,280 

1,220 

1,170

1,100 

1,040 

1,020 

960 

925 

911

Mean

596

-

504 

563 

746 

1,244 

7,737 

7,183 

2,417 

1,195 

999

-

Sept.

S76 

841 

808 

784 

748

718 

724 

932 

1,020 

1,090

1,160 

1,190 

1,150 

1,170 

1,190

1,190 

1,130 

1,080 

1,040 

1,010

960 

939 

960 

984 

1,100

1,100 

1,070 

1,020 

992 

984

Run-off In 

acre-feet

36,800

-

30,960 

31,270 

45,880 

74,000 

475,800 

427,400 

148,600 

73,600 

59,420

1,404,000

 ote.- Stage-discharge relation affected by Ice Dec. 15-21, Dec. 24 to Feb. 12.
16 COLORADO RIVER MMN STEM

Colorado River at Glenwood Springs, Colo.

Location.- Water-stage recorder, lat. 39°33', long. 107°19', in sec. 9, T. 6 S., R. 39 

TIT; at ffieriwood Springs, half a mile upstream from Roaring Fork. Datum of gage Js 

5,720.71 feet above mean sea level, adjustment of 1912.

Drainage, area..- 4,560 square alleo.

Records avallable..- January 1900 tc September 1941. May to July 1899, at site just above 

Roaring Fork:.

Average, discharge.- 42 years, 2,969 second-feet.

Extremes.- Maximum discharge during year, 14,900 second-feet May 15 (gage height, 9.00 

feet,); minimum daily, 392 second-feet Dec. 15.

1900-41: Maximum discharge, 30,100 second-feet June 14, 15, 1918 (gage height, 

12.55 feet); minimum daily, 386 second-feet Jan. 22, 1935.

Remarks.- Records excellent except those for period June 18 to Sept. 30, which are good. 

OTveraions above station for irrigation. During low-water period, flow is regulated 

by Shoshone power plant, 5 miles above station.

Hating table, watsr year 1940-41 (gage height, in feet, and discharge, 3n second-feet) 

{Shifting-control method uaed Jims 18 to Sept. 30)

J.4 

5.8

6SC

aie

1,300

4.2 

's.O 

5.4 

6.0

3,860 

5,2SO

Discharge, iij second-feet, water year October 1940 to September 1941

Cay

1 

2 

Z 

4 

5

6

7

e

9 

10

1.1 

12 

13 

14 

15

16 

17

IS 

19

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

1,390

1,470 

1,450 

1,450 

1,430

1,380 

1,210 

1,330 

1,320 

1,350

1,330 

1,390 

1,360 

1,100 

1,140

1,160 

1,100 

996 

1,150 

1,060

826 

1,020 

958 

952 

912

1,050 

915 

888 

978 

839 

917

HOT.

796 

1,010 

848 

750 

945

865 

671 

866 

1,020 

1,040

915 

905 

560 

E66 

589

798 

65?

784 

1,000 

747

981 

923 

354 

844 

813

798

761 

813 

809 

810

L

Dec.

825 

82B 

382 

8S3 

767

771 

810 

731 

676 

750

774 

752 

724 

667 

392

417 

4!il 

603

729

6S1 

542 

517 

686

74S

712

698 

685 

685 

741 

7fi5

Jan.

663 

677 

492

490 

451

468 

547 

584 

669 

551

508 

556 

571 

594 

594

594 

538

543 

594 

581

555 

706 

713 

685

555

659 

607 

646 

620 

633 

755

Feb.

588 

614 

655 

555

581

588 

668 

633 

581 

652

672 

770 

748 

706 

727

713 

692 

S2C

711 

755

762

770 

770 

770 

770

672 

652 

633

Month

Dot 

No^ 

Dec

C

Jan 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aag 

Sej

*

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

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

alendar yemr 194

.......................

ater year li40-4^

Mar.

520 

698 

734 

74S 

713

741 

634 

661 

C95 

5<5<i

432 

699 

689

658 

S94

694 

6?0

713

a 50

894

748 

838 

1,020 

1,260 

1,270

1,170 

1,040 

946 

1,070 

3.3CO 

1,400

Apr . j May

1 

1 

1

1

1 

1 

1

1 

1 

1

1

1 

L 

1 

1

1 

1

1 

I

S

36C 

430 

500 

390 

330

440 

450 

330 

050 

982

080 

210 

290

530 

1590

620 

390 

370 

370

cao

050 

98E 

130 

150 

240

370 

650 

060 

380 

7 CO

"

2,900 

3,120 

3,800 

4,960 

5,430

4,860 

4,320 

3,980 

4,350 

5,680

7,380 

9,160 

11,800

14,100 

14,500

13,200 

11,500 

11,900 

12,600 

10,900

9,420 

9,290 

9,670 

10,200 

10, 600

10,800

11,100 

10,600 

9,510 

£5,970 

8,900

Second- I .-([jyi^.B 

foot -days j

35,811 

S4 , 91i:

2.1 5 4

674,024

13,360 

18,858 

25,406 

42,664 

269,500 

236,750 

82,360 

42,187 

33,986

852,268

1,470 

1,040

es;:

10, 600

755 

770 

1,400 

2,760 

14,500 

10,400 

4,620 

1,590 

1,450

.Tuna

8,970 

8,900 

3,780 

8,780 

9,000

8,620 

8,390 

8,230 

8,100 

7,260

7,290 

6,450 

5,650 

5,790 

6,000

e,5io

7,260 

8,390

9,510 

10,400

9,800 

9,290 

8,840 

8,710 

8,550

8,420 

7,320 

6,570 

5,820 

5,150

July

4,620 

4,210 

4,060 

3,880 

3,660

3,420 

3,260 

3,230 

3,120

3,010

2,830 

2,690 

2,700 

2,670 

8,520

2,430 

2,400 

2,280 

2,140 

53,300

2,380 

2.270 

2 ',110 

1,940 

1,870

1,800 

1,800 

1,810 

1,760

1,640 

1,5(30

Minimum

836 

560

392

4S1 

555 

482 

93R 

2,900 

5,150 

1,560 

937 

755

14, 500 j 39E

Aug.

1,630

1,380 

1,200 

1,150 

1,170

1,180 

1,210 

1,410 

1,410 

1,500

1,360 

1,500 

1,520 

1,580 

1,520

1,480 

1,410 

1,430 

1,590 

1,530

1,500 

1,460 

1,460 

1,450 

1,440

1,280 

1,230 

1,200 

1,120 

1,050 

937

Moan

J,155 

830 

690

1,842

593 

674 

821 

1,422 

8,694 

7,692 

2.657 

1,361 

1,133

2,335

Sept.

1,050 

S91 

871 

839 

856

755 

774 

991 

1,080 

1,190

1,330 

1,360 

1,400 

1,450 

1,360

1,410 

1,360 

1,270 

1,160 

1,030

1,090 

1,040 

1,060 

1,080 

1,290

1,290

1,270 

1,180 

1,140 

1,120

Run-off in 

aore-faet

71,OSC 

49,410 

42,A'50

1,337,000

36,430 

37,400 

50,490 

84,620 

534,500 

469,600 

163,400 

83,680 

67,410

1.690,000
COLORADO RIVER MAIN STEM 17

Colorado River near Cameo, Colo.

Location.- Water-stage recorder, lat. 39"IS 1 , long. 108°15', In see. 6, T. 10 3., R. 97 

H77~374 miles upstream from Plateau Creek and 6.7 miles northeast of Cameo.

Drainage area.- 8,055 square ml'iea.

ReoordB available^- October 1933 to September 1941.

Extremes.- Maximum discharge during year, 27,500 second-feet May 14 (gage height, 9.96 

T55T7T minimum dally, 790 second-feet Jan. 5.

1933-41: Maximum discharge, 36,000 second-feet June 16, 1935 (gage height, 10.91 

feet); minimum dally, 700 second-feet Dec. 29, 1939.

Remarks.- Records excellent except those for periods of Ice effect, which are good. Many 

aiversions above station for Irrigation.

Rating tables, water year 1940-41, except period of loe effect (gags height, In feet,

and digcharge, In aeoonA-feet) 

(Shirting-control method used Mar. 24 to Apr. 90)

Got. 1 to Jan. SO

1.4 1,030 3.7 4,180 

8.2 1,090 4.6 6,780 

8.6 2,400 6.0 6,620 

ite.- Same as following 

e above 6.0 feet.

1.8 i.e

8.6 

4.8 5.0

Jan. 31 to Sept. 30

800

1,490

8,670

8,180

6,980

6.0

7.0

S.O

10.0

9,620

13.000

17,600

87,700

Discharge, In seoond-feot, water year October 1940 to September 1041

Cay

1 

8 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

18 

14 

16

16 

17 

18 

19 

80

81 

88 

88 

84 

86

26 

27 

80 

89 

SO 

SI

Dot.

8,670 

2,600 

8,480 

8,360 

2,790

8,760 

8,400 

2,180 

8,300 

8,300

2,880 

8,140 

8,140 

8,000 

1,680

1,870 

1,860 

1,760 

1,680 

1,770

1,700 

1,630 

1,630 

1,670 

1,660

1,610 

8,060 

1,660 

1,680 

1,680 

1,630

Nov.

1,610 

1,420 

1,630 

1,640 

1,600

1,530 

1,470 

1,480 

1,460 

1,630

1,630 

1,600 

1,370 

1,080 

1,100

1,810 

1,370 

1,360 

1,430 

1,660

1,480 

1,660 

1,460 

1,440 

1,410

1,370 

1,340 

1,890 

1,360 

1,370

Deo.

1,370 

1,370 

1,360 

1,360 

1,310

1,270 

1,310 

1,310 

1,860 

1,2 JO

1,840 

1,310 

1,270 

1,860 

960

600 

980 

1,100 

1,800 

1,800

1,120 

1,080 

1,100 

],180 

1,800

1,800 

1,180 

1,180 

1,180 

1,200 

1,260

Jan.

1,310 

1,170 

1,040 

920 

790

820 

900 

960 

1,060 

1,180

1,060 

1,100 

1,100 

1,080 

1,080

1,060 

1,000 

990 

990 

1,060

1,060 

1,100 

1,140 

1,100 

1,070

1,000 

1,100 

1,100 

1,100 

1,180 

1,160

Feb.

1,160 

1,010 

1,040 

1,090 

1,110

1,010 

1,060 

1,030 

1,070 

1,090

1,160 

1,480 

1,630 

1,280 

1,190

1,310 

1,290 

1,210 

1,370 

1,290

1,860 

1,860 

1,820 

1,870 

1,420

1,230 

1,100 

1,060

Month

Oot 

NOT 

Dec

c

Jar 

Fet 

Mai

Api 

Ma, 

Jur

Ju] 

Auj 

Sej

?

uar

rater year 1940-4

Mar.

1,060 

1,860 

1,400 

1,840 

1,190

1,130 

1,130 

1,060 

1,080 

1,180

990 

986 

1,140 

1,880 

1,200

1,140 

1,100 

1,180 

1,220 

1,260

1,390 

1,370 

1,610 

8,010 

1,960

1,860 

1,710 

1,690 

1,630 

1,680 

1,870

Apr.

1,940 

1,980 

1,970 

8,000 

1,890

1,940 

1,960 

1,690 

1,760 

1,620

1,600 

1,820 

1,990 

8,130 

2, SCO

8,320 

8,860 

2,180 

2,170 

8,110

1,970 

1,740 

1,060 

2,040 

8,870

8,620 

2,880 

3,470 

4,160 

4,370

Secondfoot -days

61,910 

42,890 

37,240

1,030,670

SsJeSO 

41,426 

67,130

404^970 

168,640

61*470

1,498,476

May

4,730 

6,160 

6,040 

8,610 

10,700

10,000 

9,880 

8,960 

9,400 

11,300

14,400 

17,400 

21,600 

26,800 

86,000

83,400 

80,600 

80,700 

21,600 

19,800

16,900 

16,000 

16,700 

16,600 

17,000

18,400 

19,800 

18,600 

16,400 

14,800 

14,400

Maximum

2,790 

1,640 

1,370

16,700

1,310 

1,530 

8,010 

4,370 

26,000 

17,400 

8,890 

2,960 

8,7BO

86,000

June

14,600 

14,400 

14,300 

14,600 

14,900

14,900 

14,400 

14,600 

13,700 

18,000

10,900 

10,600 

9,880 

8,960 

9,180

9,680 

10,900 

12,900 

16,600 

17,000

17,400 

17,000 

16,600 

16,700 

16,300

16,800 

14,600 

12,600 

11,100 

9,840

July

8,690 

7,930 

7,640 

7,310 

7,130

6,780 

6,360 

6,330 

6,220 

6,000

6,740 

6,420 

6,860 

6,860 

6,000

4,690 

4,480 

4,400 

4,260 

4,420

4,690 

4,360 

4,060 

3,810 

3,670

3,420 

3,310 

3,830 

3,140 

2,980 

8,770

Minimum

1,610 

1,080 

800

800

790 

1,010 

926 

1,620 

4,730 

8,960 

2,770 

1,730 

1,380

790

Aug.

2,630 

8,580 

2,380 

8,170 

8,060

2,040 

2,100 

8,140 

8,600 

2,960

2,660 

8,360 

8,600 

8,440 

8,440

8,680 

8,680 

2,640 

8,640 

8,640

8,680 

2,610 

8,440 

2,360 

8,860

8,160 

1,960 

1,890 

1,830 

1,810 

1,730

Mean

1,997 

1,430 

1,801

2,816

1,066 

1,199 

1,336

16)420 

13,600 

5,117 

2,336 

2,049

4,089

Sept.

1,660 

1,660 

1,690 

1,600 

1,470

1,440 

1,380 

1,360 

1,660 

1,860

1,960 

8,080 

8,170 

8,610 

8,760

8,460 

8,860 

8,890 

8,870 

8,880

2,140 

2,600 

8,310 

2,280 

8,820

8,360 

8,380 

8,870 

2,810 

8,180

Run-off in 

acre-feet

86^070 

73,860

2,044,000

64,980 

66,600 

88,170 

133,200 

948,800 

803,200 

314,700 

143,600 

121,900

2,960,000

Note.- Stage-discharge relation affected by loe Deo. 14-30, Jan. 3-30.
18 COLORADO RIVER MAIN STEM

Colorado River near Cisco, Utah

Location.- Water-stage recorder, lat. 38°49', long. 109°18', In NWi sec. 17, T. 23 S., 

RT~25~~E., 1 mile downstream from Dolores River and 11 miles south of Cisco.

Drainage area.- 24,100 square miles.

Records available.- November 1914 to September 1917, October 1922 to September 1941. 

 October 1913 to November 1914 at site near Moab, 30 miles downstream, published as 

Colorado River near Moab, Utah. Records equivalent.

Average discharge.- 23 years, 8,268 second-feet.

Extremes.- Maximum discharge during year, 64,400 second-feet May 15 (gage height, IS.84 

feet;; minimum, 1,480 second-feet Sept. 8 (gage height, 1.54 feet).

1914-17, 1922-41: 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).

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

fair. Diversions above station for irrigation and power.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

S

6 

7

e

9 

10

11

12 

13 

1< 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

10,900 

8,730 

3,220 

7,690 

7,430

9,070 

6,450 

5,320 

5,100 

5,100

4,580 

4,370 

4,170 

a3,970 

a3,780

3,580 

3,490 

3,400 

3,300 

3,210

3,300 

3,210 

2,940 

3,030 

2,850

2,940 

4,580 

4,170 

3,400 

3,120 

3,810

NOT.

3,120 

3,030 

3,030 

3,580 

3,490

3,210 

3,030 

2,940 

3,030 

3,030

3,210 

3,210 

2,940 

2,760 

2,370

2,270 

2,590 

3,030 

2,850 

3,300

3,400 

3,210 

3,300 

3,120 

3,030

3,030 

2,940 

2,350 

2,760 

8,350

Dec.

2,940 

2,850 

2,850 

2,760 

8,760

2,760 

2,680 

2,680 

2,680 

8,590

2,590 

2,760 

2,940 

2,680 

2,340

2,120 

1,700 

1,640 

1,900 

2,420

2,500 

8,280 

2,150 

2,250 

2,400

8,680 

2,680 

2,500 

2,590 

2,590 

2,680

Jan.

2,760 

2,760 

2,420 

2,190 

1,860

1,700 

1,840 

8,010 

2,030 

2,060

2,170 

2,270 

2,340 

8,400 

8,390

2,420 

2,350 

2,250 

2,120 

2,010

2,270 

2,300 

2,420 

2,500 

8,420

2,340 

2,320 

2,250 

2,250 

2,370 

2,420

Feb.

2,590 

2,590 

2,390 

2,280 

2,090

2,110 

2,190 

2,280 

2,320 

2,400

2,350 

2,850 

3,400 

3,490 

2,940

2,500 

2,680 

2,940 

2,940 

2,940

3,210 

3,120 

3,120 

3,030 

3,300

3,400 

3,030 

2,680

Month

Oct 

Hot

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jvd 

Aug 

Set

«

alendar year 1940......................

ater year 1940-4

Mar.

8,500 

2,500 

2,940 

3,120 

2,940

2,760 

2,680 

2,590 

8,500 

2,500

2,500 

2,370 

8,350 

2,680 

2,940

2,850 

2,940 

2,760 

2,760 

3,030

3,300 

3,780 

4,070 

4,890 

5,540

5,100 

4,680 

4,370 

4,270 

4,680 

5,210

Apr.

6,100 

7,180 

6,690 

a6,400 

a6,000

a5,800 

5,650 

5,540 

5,540 

6,220

6,310 

6,450 

6,340 

6,220 

a6,280

6,340 

6,34& 

5,990 

aS,800 

aS, 600

a5,400 

aS,200 

5,000 

5,100 

5,990

7,950 

11,200 

15,800 

19,700 

19,700

Secondroot-days

148,660 

90,510 

77,940

1,849,393

70,810 

77,100 

104,100 

224,300 

1,167,500 

797,800 

292,090 

126,360 

119,260

3,315,830

toy

22,500 

22,900 

22,900 

27,900 

40,500

40,500 

37,000 

34,400 

34,800 

33,300

42,800 

47,700 

52,800 

59,700 

63,400

57,400 

43,200 

45,000 

46,400 

45,000

33,900 

28,800 

27,900 

31,300 

33,500

35,700 

36,100 

37,400 

34,400 

30,500 

27,900

Maximum

10,900 

3,580 

2,940

25,000

2,760 

3,490 

5,540 

19,700 

63,400 

38,300 

16,900 

8,690 

18,600

63,400

June

87,100 

26,200 

26,200 

26,200 

26,600

27,100 

87,500 

31,300 

32,200 

30,500

27,100 

24,100 

21,300 

19,700 

19,300

20,100 

21,300 

22,900 

25,400 

a28,400

31,300 

31,300 

30,500 

30,500 

30,900

38,800 

27,900 

24,600 

21,700 

19,300

July

16,900 

15,800 

14,300 

13,600 

13,300

12,900 

11,900 

11,600 

11,200 

11,200

10,900 

10,900 

10,300 

9,960 

9,660

9,070 

3,500 

,950 

,430 

,690

,950 

,950 

,180 

6,690 

6,450

5,990 

5,650 

5,320 

5,100 

4,580 

4,170

Minimum

2,850 

2,270 

1,640

704

1,700 

2,090 

2,350 

5,000 

22,500 

19,300 

4,170 

2,100 

1,630

1,630

Aug.

as, 300 

a3,800 

a3,SOO 

2,940 

2,760

2,500 

2,500 

3,600 

4,370 

8,690

6,690 

6,100 

5,320 

5,000 

4,580

4..7SO 

5,330 

5,880 

 5,650 

4,890

4,580 

4,870 

a3, 300 

a3,300 

as, 000

2,760 

2,500 

2,220 

a2,200 

a2,100 

a2,100

Mean

4,795 

3,017 

2,514

5,053

2,265 

2,754 

3,358 

7,477 

38,310 

26,590 

9,422 

4,076 

3,975

9,084

Sept.

a2,000 

a2,000 

1,990 

1,930 

1,920

. 1,840 

1,740 

1,680 

1,630 

1,300

2,120 

2,220 

2,420 

3,300 

3,780

4,170 

3,370 

3,680 

3,870 

4,170

3,970 

7,850 

12,600 

3,220 

a7,000

a6,000 

a5,400 

a5,400 

5,210 

5,430

Run-off In 

acre-feet

294,900 

179,500 

154,600

3,668,000

139,300 

152,900 

206,500 

444,900 

2,355,000 

1,582,000 

579,400 

250,600 

236,500

6,576,000

a Ho gage-height record; discharge Interpolated or computed on basis of records for station on 

Oreen River at Oreen River, Utah.
COLORADO RIVER MAIN STEM 19

Colorado River at Lees Ferry, Ariz.

Location.- Water-stage recorder, lat. 36 0 51'45'1 , long. 111°36'15", in NEiSEi see. 13, 

T. 40 N., R. 7 E., at head of Marble Gorge, at Lees Ferry, just upstream from 

Paria River, 28 miles downstream from Utah-Arizona State line, <79 miles downstream 

from San Juan River, and 355 miles upstream from Boulder Dam. Datum of gage is 

3,106.16 feet, datum of 1929, or 3,106.35 feet, adjustment of 1912, above mean sea 

level.

Drainage area.- 107,900 square miles.

Records available.- June 1921 to September 1941.

Average discharge.- 20 years, 17,370 second-feet.

Extremes.- Maximum discharge during year, 120,400 second-feet May 17 (gage height, 20.51 

reet); minimum, 3,630 second-feet Dec. 20 (gage height, 6.32 feet).

1921-41: 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 floodraark 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. Diversions above station for irrigation. During the 

year 96 discharge measurements were made.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S

z

4 

5

6 

7 

S 

9 

10

11 

18 

13 

14 

16

16 

17 

IB 

19 

20

21 

22 

23 

24 

25

26 

27 

2B 

29 

30 

31

Oct.

20,600 

23,400 

16,400 

15,500 

14,000

19,100 

19,300 

14,600 

16,900 

14,200

12,500 

11,600 

11,000 

10,200 

9,500

8,980 

8,710 

8,250 

7,880 

7,420

7,170 

6,970 

6,730 

6,600 

6,530

6,150 

6,120 

6,180 

7,200 

7,170 

7,880

Nov.

S,060 

6,930 

6,370 

6,400 

6,340

6,060 

5,939 

6,160 

6,470 

6,470

6,180 

6^150 

6,180 

6,280 

6,210

6,340 

6,090 

5,750 

5,750 

8,290

10,700 

9,060 

7,420 

7,310 

6,970

6,700 

6,660 

6,600 

6,340 

6,120

Dec.

6,020 

5,S10 

5,670 

5,610 

5,640

5,640 

5,670 

5,720 

5,930 

5,900

5,810 

6,500 

7,200 

7,100 

7,280

6,760 

6,280 

5,440 

4,450 

3,740

4,470 

4,160 

4,280 

4,850 

5,250

6,120 

7,990 

6,760 

6,150 

6,150 

6,020

Jan.

6,930 

7,880 

8,030 

7,140 

6,400

6,090 

5,810 

5,500 

5,140 

4,820

4,450 

4,400 

4,420 

4,570 

5,220

5,520 

6,060 

5,670 

5,470 

5,250

5,060 

4,800 

4,600 

4,800 

5,500

5,870 

6,090 

6,370 

5,930 

5,810 

5,990

Feb.

6,020 

6,020 

5,960 

5,870 

5,930

5,780 

5,610 

5,360 

5,330 

5,750

5,640 

5,720 

5,960 

6,210 

6,400

6,660 

7,200 

7,590 

7,520 

7,990

8,900 

10,100 

11,600 

12,000 

11,600

11,400 

11,600 

11,500

Month

Ocl

Noi 

Be

(

Jai 

Pel 

Mai 

Ap 

Mai 

Jui 

JuJ

2*

Se

V

Calendar year 19 10. .....................

"11 

Ly.. ....................................

fater year 1940-'

Mar.

11,900 

11,600 

11,300 

10,300 

11,000

11,400 

10,800 

10,700 

10,600 

9,300

8.4SO 

8,400 

S,100 

7,480 

7,480

9,030 

10,000 

9,540 

9,910 

10,100

10,200 

10,400 

10,300 

11,500 

12,000

12,700 

14,000 

15,400 

15,500 

13,900 

13,700

Apr.

13,600 

13,300 

14,500 

16,300 

16,800

16,100 

15,300 

15,800 

17,200 

17,900

17,900 

18,200 

20,900 

20,900 

20,100

18,700 

17,700 

16,800 

16,800 

16,700

16,700 

16,300 

15,500 

16,100 

17,600

19,400 

17,800 

22,200 

29,000 

37,100

Secondfoot-days

345,240 

202,280 

180,370

3,825,880

175,590 

213,220 

337*020 

550,260 

2,507,800 

2,016,800 

840,100 

402 , 170 

306,570

8,079,360

May

40,300 

40,300 

44,200 

49,500 

51,900

65,800 

78,200 

71,700 

73,600 

77,300

80,100 

83,700 

67,800 

94,100 

105,000

118,600 

117,500 

110,200 

102,200 

97,100

95,900 

89,300 

80,000 

76,900 

81,900

79,500 

82,400 

83,900 

36,000 

S4,200 

78,700

Maximum

23,400 

10,700 

7,990

45,700

8,030 

12,000 

15,500 

37,100 

118,600 

82,300 

52,600 

24,100 

26,800

118,600

June

74,100 

70,500 

68,400 

66 ,800 

66,900

67,300 

67,400 

69,300 

75,200 

82,300

80,600 

74,000 

66,300 

60,400 

55,900

54,SOO 

54,300 

54,200 

56,600 

60,500

63,400 

74,400 

74,300 

73,200 

70,900

72,000 

71,600 

67,000 

63,000 

57,700

July

52,600 

45,900 

43,600 

40,200 

37,500

35,700 

34,400 

34,300 

32,300 

30,200

29,300 

23,400 

27,600 

27,100 

25,900

24,600 

23,300 

22,200 

22,200 

20,900

21,400 

21,500 

21,500 

19,800 

20,600

18,500 

17,900 

17,100 

15,200 

14,400 

14,000

Minimum

6,120 

5,750 

3,740

1,700

4,400 

5,330 

7,430 

13,600 

40,300 

54,200 

14,000 

7,450 

5,110

3,740

Aug.

13,300 

12,400 

11,300 

10,500 

9,830

9,500 

8,790 

9,020 

9,100 

9,670

15,600 

24,100 

19,500 

17,200 

15,700

15,500 

15,400 

15,900 

15,900 

17,400

16,700 

15,000 

13,200 

13,100 

12,600

11,500 

10,500 

9,300 

8,670 

8,140 

7,450

Mean

11,140 

6,743 

5,818

10,480

5,664 

7,615 

10,870 

18,340 

80,900 

67,290 

27,100 

12,970 

10,220

22,140

Sept.

6,300 

6,310 

6,310 

6,970 

7,240

6,760 

6,370 

6,180 

5,780 

5,440

5,330 

5,140 

5,110 

6,210 

8,330

9,130 

11,400 

10,700 

9,910 

11,100

10,100 

10,900 

12,200 

17,500 

26,800

20,900 

16,900 

16,200 

14,800 

13,700

Run- off in 

acre-feet

664,800 

401,200 

357,800

7,589,000

348,300 

422,900 

668,500 

1,091,000 

4,974,000 

4,004,000 

1,666,000 

797,700 

608,100

16,020,000
20 COLORADO RIVER MAIN STEM

Colorado River at Bright Angel Creek, near Grand Canyon, Arlz.

Location.- Water-stage recorder, lat. 36°05 I 5511 , long. 112°05'30", at Kalbab Bridge, a 

-quarter of a mile upstream from Bright Angel Creek, 11 miles by trail northeast of 

Grand Canyon Village, Coconlno County, and 267 miles upstream from Boulder Dam. 

Datum of gage is 2,413.7 feet above mean sea level, preliminary datum of 1929.

Drainage area.- 137,300 square miles.

Records available.- October 1922 to September 1941.

Average discharge.- 19 years, 17,720 second-feet.

Extremes.- Maximum discharge during year, 120,400 second-feet May 17 (gage height, 28.86 

reet): minimum, 4,240 second-feet Dec. 21 (gage height, 2.61 feet).

1922-41: Maximum discharge, 127,000 second-feet July 2, 1927 (gage height, 29,26 

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 flcod 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. During the year 47 discharge measurements were made. 

Diversions above station for irrigation.

Diaoharga, in aeoond-feet, water year Ootober 1640 to September 1941

Day

1 

8 

3

4 

6

6

7 

8 

9 

10

11ie

13 

14 

16

16 

17 

18 

19 

80

81 

88 

83 

84 

86

86 

87 

88 

89

30 

31

Oct.

88,300 

86,800 

19,800 

17,800 

16,900

18,800 

83,100 

17,700 

17,800 

17,000

14,400 

13,000 

18,000 

11,400 

10,600

9,860 

9,300 

8,980 

8,680 

8,070

7,660 

7,440 

7,300 

7,110 

6,890

6,800 

6,670 

6,680 

7,070 

7,980 

6,190

NOT.

6,760 

8,310 

7,360 

6,970 

6,860

6,760 

6,490 

6,440 

6,760 

6,830

6,770 

6,660 

6,410 

6,460 

6,680

6,610 

6,660 

6,360 

6,140 

6,880

9,810 

10,600 

8,770 

7,700 

7,860

7,8*0 

7,360 

7,800 

7,070 

6,770

Deo.

6,690 

6,410 

6,800 

6,080 

6,080

6,090 

6,080 

6,130 

6,870 

6,440

6,480 

6,410 

7,080 

7,640 

7,770

8,860 

7,680 

6,910 

5,910 

4,830

4,300 

5,940 

5,880 

6,380 

7,6BO

6,780 

9,140 

8,740 

7,660 

7,110 

7,140

Jan.

7,940 

10,600 

11,300 

9,700 

8,170

7,340 

6,690 

6,330 

8,980 

5,610

6,340 

8,640 

13,600 

7,590 

6,680

6,730 

6,790 

6,910 

6,490 

6,880

6,880 

6,640 

6,380 

6,310 

5,680

6,890 

6,380 

6,980 

7,010 

6,660 

6-.410

~Xftb.

6,490 

6,690 

6,680 

6,440 

6,410

6,410 

6,880 

6,080 

6,800 

6,370

7,040 

6,760 

6,730 

6,870 

7,980

7,890 

8,090 

9,060 

11,300 

10,800

11,300 

11,600 

14,800 

16,900 

16,100

14,900 

14,300 

13,700

Month

Dot 

Not 

Dee

C

Jar 

Pet 

liar 

API 

Maj 

Jur 

jul Aug

3ej

D atar year 1940-4

liar.

13,600 

13,400 

13,300 

18,600 

18,600

14,000 

18,800 

18,100 

11,700 

11,100

10,100 

9,640 

9,060 

8,780 

6,410

88,100 

19,100 

16,100 

14,000 

13,600

13,100 

13,100 

13,800 

13,100 

16,000

14,900 

18,000 

17,100 

18,000 

16,600 

15,600

Apr.

16,800 

16,700 

16,300 

18,100 

80,000

19,300 

18,600 

18,000 

18,600 

19,600

19,700 

19,800 

21,700 

88,900 

83,400

88,800 

81,400 

80,900 

80,800 

80,000

19,400 

19,100 

18,300 

17,100 

18,600

80,600 

80,600 

81,800 

£9,300 

33,000

Seoondfoot-daya

381,710 

816,890 

806,710

4,061,880

818,640 

869,460 

488,480 

609,700 

8,608,700 

8,066,900 

883,700 

433,940 

338,030

6,639,790

May

39,900 

40,100 

41,300 

44,600 

50,900

66,900 

76, BOO 

73,600 

73,300 

76,400

79,800 

88,700 

86,800 

98,300 

101,600

118,600

119,800 

114,600 

103,700 

99,100

99,800 

94,800 

83,600 

76,600 

SO, 100

83,100 

88,700 

84,900 

36,700 

87,600 

84,800

Maximum

86,800 

10,600 

9,140

46,600

13,600 

16,900 

88,100 

33,000 

119,800 

63,600 

66,800 

83,500 

86,700

119,800

June

78,700 

75,100 

78,800 

70,700 

69,000

67,400 

66,800 

67,700 

78,300 

81,700

83,600 

77,700 

70,800 

63,000 

68,600

66,700 

66,300 

66,000 

67,800 

66,800

64,700 

78,400 

76,100 

74,700 

74,000

78,700 

74,900 

70,100 

66,100 

60,600

Minimum

July

66,800 

60,400 

46,700 

48,600 

40,800

37,300 

36,400 

36,100 

34,500 

38,800

30,100 

89,400 

88,400 

87,900 

86,600

86,700 

84,100 

83,000 

88,400 

81,600

80,700 

81,900 

81,300 

88,300 

80,400

80,300 

19,100 

18,600 

17,800 

16,600 

14,600

6,680 

6,140 

4,300

8,380

6,310 

6,600 

8,410 

16,700 

39,900 

66,000 

14,800 

6,430 

6,330

4,300

Aug.

14,800 

18,400 

18,400 

11,600 

10,700

10,100 

10,000 

9,380 

9,780 

9,610

11,400 

83,500 

83,600 

18,900 

17,300

17,800 

19,100 

18,400 

17,100 

17,600

18,100 

16,900 

14,900 

13,400 

18,700

18,600 

11,600 

10,500 

9,460 

6,890 

8,430

Mean

18,310 

7,830 

6,636

11,070

7,068 

9,866 

13,630 

80,380 

80,930 

68,900 

88,610 

14,000 

11,070

£3,400

Sept.

7,740 

7,140 

6,730 

6,790 

7,680

7,650 

7,180 

6,790 

6,610 

6,180

6,760 

6,840 

6,360 

7,160 

e,460

10,100 

11,000 

18,400 

18,700 

11,600

18,400 

10,700 

18,800 

13,600 

83,300

86,700 

19,300 

16,800 

16,600 

81,800

Run-off In 

aora-feet

767,100 

430,800 

408,000

8,036,000

433,700 

614,600 

837,900 

1,809,000 

4,976,000 

4,100,000 

1,783,000 

860,700 

668,600

16,940,000
COLORADO RIVER MAIN STEM 

Lake Mead at Boulder Dam, Arlz.-Nev.

21

Location.- Water-stage Indicator, lat. 36°00'59", long. 114°44'10B , In SWi sec. 3, T. 30 

N., R. 23 W., Olla and Salt River meridian, on State line, In center of Boulder dam 

on Colorado River. Datum of gage Is at mean sea level, adjustment of 1912, or 0.21 

foot above mean sea level, datum of 1929. Elevations given herein are referred to adjustment of 1912.

Drainage area.- 167,800 square miles.

Records available.- February 1935 to September 1941.

extremes.- Maximum contents during year, 27,790,000 acre-feet July 29, 30 (elevation, 

1,880.45 feet); minimum, 20,150,000 acre-feet Feb. 15, 16, 18, 19 (elevation, 

1,166.75 feet).

1935-41: Maximum contents, that of July 29, 30, 1941; minimum has Increased each 

year since storage began in 1935.

Remarks.- Reservoir Is formed by concrete arch-gravity type dam; storage began Feb. 1, 

1936; dam completed Mar. 1, 1936. Total capacity, 32,359,000 acre-feet, consisting 

of the following: dead storage, 3,207,000 acre-feet below elevation 895.0 feet 

(gage sills In outlet towers); usable contents, 27,935,000 acre-feet between elevations 895.0 feet and 1,221.4 feet (top of automatic spillway gates In raised 

position); uncontrolled storage, 1,217,000 acre-feet between elevations 1,221.4 feet 

and 1,229.0 feet. Reservoir la used to store water for Irrigation, municipal water 

supply, and power development, and for flood control. Figures given herein represent 

usable contents. Records computed on basis of Pacific standard time.

Cooperation.- Records collected and prepared In cooperation with Bureau of Reclamation.

Viable oonteati, at 18 p.m., In thousands of acre feet, water year October 1940 to September 1941

D«y

1

8

S

4

5

6

7e

9

10

11

12

13

14

16

16

17

18

19

80

81

88

83

84

86

86

87

88

89

SO

SI

Dot.

83,130

81,130

21,160

81,170

21,160

21,190

21,800

81,210

21,220

81,230

81,250

81,240

81,840

21,840

21,220

21,820

81,210

81,800

81,180

21,160

81,160

81,160

81,140

81,140

81,130

81,110

81,100

81,100

81,080

81,070

81,060

HOT.

81,060

81,030

80,030

21,010

80,990

20,980

80,970

80,960

20,930

20,930

80,910

20,890

20,670

80,860

20,860

20,830

20,880

80,810

20,600

80,780

20,780

80,760

20,760

20,760

80,740

80,780

20,710

20,700

20,690

80,670

See.

80,670

80,660

20,640

20,630

20,610

20,600

80,690

20,860

20,660

80,660

80,650

80,620

80,600

80,480

80,470

20,460

20,460

20,440

20,430

20,410

20,390

20,560

80,360

80,360

20,360

80,560

80,340

80,310

20,330

20,380

20,380

Jan.

20,380

20,310

20,310

20,310

80,320

20,310

20,310

20,300

20,300

80,860

20,880

SO ,,260

80,280

80,870

20,880

80,270

80,870

80,260

20,860

20,860

20,260

20,260

20,840

20,830

80,220

£0,220

20,210

20,210

20,800

80,800

20,800

Feb.

80,190

20,200

20,190

20,130

20,180

20,160

20,180

20,160

20, ISO

20,170

20,160

20,160

20,160

20,160

20,160

20,160

80,160

80,160

20,160

20,160

20,160

20,170

20,190

80,200

20,820

20,240

20,260

20,260

.

-

Map.

80,280

80,500

80,380

20,380

20,340

80,340

80,360

80,870

20,380

20,380

80,380

20,390

20,390

20,400

20,410

20,410

80,430

20,460

' 20,460

20,480

20,490

20,800

20,610

80,620

80,680

80,640

20,660

20,660

20,680

20,600

20,680

Apr.

20,630

80,640

20,660

20,670

20,690

80,710

20,730

80,760

80,760

20,780

80,880

20,640

20,880

20,900

20,930

80,960

20,990

21,010

81,030

21,070

81,090

81,110

21,140

21,160

21,170

21,190

21,830

21,260

81,870

21,540

-

»«T

81,400

81,440

21,610

21,690

81,660

81,760

21,870

81,990

82,090

22,260

28,310

28,430

22,640

22,670

22,830

22,990

23,170

23,360

85,610

83,660

23,800

23,940

24,060

24,190

24,260

84,370

84,460

24,670

84,670

24,770

24,370

June

84,970

86,060

86,140

86,810

86,890

28,340

86,400

86,460

86,620

86,600

86,690

26,780

26,860

28,920

26,970

26,080

26,060

86,090

86,140

26,190

26,260

26,320

86,590

86,490

26,680

26,660

26,760

26,680

26,940

27,080

-

JUly

87,090

87,160

87,180

87,840

27,380

27,360

27,390

27,430

87,460

87,600

27,650

27,660

27,670

27,600

27,620

87,640

27,660

27,680

27,690

27,710

27,710

27,720

27,720

27,730

27,760

27,760

87,770

27,760

27,790

87,790

27,780

Aug.

27,780

27,770

87,760

87,760

27,740

87,780

87,700

87,680

27,660

87,640

27,680

27,690

27,690

27,690

27,660

27,570

87,660

27,640

87,850

87,600

27,480

87,460

87,440

27,480

87,390

27,360

27,380

27,280

27,250

27,200

27,170

Sept.

87,150

87,080

87,060

87,000

86,940

26,900

86,870

26,620

86,780

86,730

'26,690

86,660

26,610

86,670

86,630

86,490

86,460

86,480

86,390

86,360

26,540

86,300

26,860

26,840

86,210

86,800

26,800

26,190

26,170

26,160

-

Monthly elevation and content*, water year October 1940 to September 1941

Date Elevation 

(feet)t

1,168.06

1 1 tyR AA

I gm OK

1,216.86

1,809.86

Contents 

(acre-feet)

80,380,000

86,160,000

Change in contents 

during month 

(acre-feet)

-360,000

-1,080,000

t Elevation at midnight.
32 COLORADO RIVER MAIN STEM

Colorado River below Boulder Oam, Ariz.-Nev.

Location.- Water-stage recorder, lat. 36 000'15", long. 114°44'35", In SWiNEj- sec. 10, T. 

30 N., R. 23 W., Gila and Salt River meridian, or NWiNEi sec. 32, T. 22 S., R. 65 E., 

Mount Diablo meridian, 1 mile downstream from Boulder Dam. Datum of gage is 599.96 

feet above mean sea level, datum of 1929, used locally as 600.00 feet as originally 

determined.

Drainage area.- 167,800 square miles at Boulder Dam.

Records available.- April 1934 to September 1941. April 1934 to November 1939 collected 

at site 9 miles downstream (published as Colorado River near Willow Beach, Ariz.).

Extremes.- Maximum discharge during year, 38,200 second-feet June 16 (gage height, 52.26 

feet); minimum, 3,360 second-feet Apr. 27 (gage height, 39.00 feet); minimum daily, 

5,290 second-feet Apr. 27.

1935-41 (regulated): Maximum discharge. 51,200 second-feet Feb. 13, 1939 (gage 

height, 54.96 feet, present site and datum); no flow Feb. 10, 1935, at present site.

Remarks.- Records excellent. Diversions above Boulder Dam for irrigation. Discharge 

completely regulated at Boulder Dam since Feb. 1, 1935. Records computed on basis of 

Pacific time. During the year 192 discharge measurements were made.

Cooperation.- Records collected in cooperation with Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

13,300 

14,000 

13,500 

33,700 

13,600

12,000 

13,700 

13,300 

13,200 

13,300

14,000 

13,300 

11,900 

14,000 

13,700

13,900 

13,400 

13,500 

14,100 

12,700

14,500 

12,300 

11,900 

11,600 

12,800

11,100 

9,260 

12,200 

12,500 

12,700 

12,800

Nov.

13,300 

13,500 

12,700 

14,000 

13,000

12,900 

13,600 

14,300 

13,800 

11,900

13,600 

14,700 

13,500 

13,500 

13,400

12,400 

10,800 

13,200 

13,100 

13,500

10,900 

12,900 

12,200 

10,000 

13,200

13,900 

13,900 

13,500

13,400 

12,500

Dec.

10,800 

13,300 

13,500 

13,600 

13,400

13,000 

12,200 

9,660 

13,400 

14,100

14,800 

14,400 

14,600 

13,700 

12,300

14,800 

14,100 

14,800 

14,600 

14,700

13,800 

11,000 

13,200 

13,000 

10,500

11,900 

12,000 

12,400 

10,100 

12,600 

11,000

Jan.

7,670 

9,910 

10,100 

9,650 

8,7SO

11,100 

11.400 

11,000 

10,700 

10,000

3,540 

6,930 

9,820 

9,790 

9,440

9,510 

9,230 

8,230 

6,820 

9,210

10,100 

10,200 

10,700 

11,000 

10,100

8,290 

10,200 

9,790 

9,670 

9,660 

9,520

Feb.

8,290 

6,230 

8,600 

9,010 

9,450

9,470 

9,230 

8,240 

6,320 

8,910

9,620 

8,940 

9,110 

10,000 

8,850

7,250 

9,700 

9,790 

10,100 

9,710

10,200 

3,330 

6,970 

9,750 

9,570

9,590 

9,570 

11,300

Month

Got 

Hoii 

Dec

C

Jar 

Fet 

Mat 

Apr 

Maj 

Jur 

Jul 

Aug 

Sei

V

alendar year 19^10. .....................

fater year 1940-'

Mar.

8,400 

7,060 

10,100 

10,600 

9,640

9,120 

9,210

8,550 

7,440 

10,000

10,000 

10,500 

9,910 

9,620 

8,150

6,950 

9,420 

9,660 

9,330 

9,120

8,940 

8,210 

6,710 

9,160 

9,260

9,300 

9,240 

9,610 

8,380 

6,900 

9,750

Apr.

9,430 

9,430 

9,380 

10,300 

9,360

9,380 

8,760 

8,730 

10,100 

10,100

9,970 

9,090 

6,060 

9,160 

9,320

9,020 

9,000 

8,970 

7,310 

5,320

7,980 

8,500 

8,150 

8,470 

8,520

7,070 

5,290 

8,960 

9,870 

9,740

Secondfoot -days

401,460 

391,100 

401,260

4,019,730

297,060 

252,150 

278,290 

261,230 

723,390 

912,300 

479,400 

720,300 

794,800

5,912,740

May

9,420 

10,300 

9,780 

10,400 

9,740

9,850 

11,600 

23,000 

24,400 

24,700

24,400 

24,600 

24,900 

24,500 

25,400

24,600 

25,300 

26,100 

27,100 

27,300

27,600 

28,500 

28,800 

28,700 

28 , 100

28,300 

28,400 

30,600 

31,100 

32,700 

32,700

Maximum

14,200 

14,700 

14,800

18,000

11,400 

11,300 

10,600 

10,300 

32,700 

35,500 

20,200 

29,800 

32,000

35,500

June

32,400 

29,900 

34,300 

34, 400 

34,400

33,300 

33,900 

33,900 

32,500 

34,500

34,500 

34,200 

33,900 

35,500 

35,200

31,300 

34,400 

33,500 

32,400 

28,900

30,300 

29,300 

27,900 

26,100 

24,100

24,200 

22,700 

20,100 

20,100 

20,200

July

20,100 

20,200 

19,100 

17,600 

15,300

15,100 

15,300 

15,000 

15,000 

15,000

14,900 

14,700 

14,600 

14,900 

14,700

14,800 

14,700 

14,900 

15,000 

14,600

14,600 

15,200 

15,100 

15,000 

14,900

14,800 

14,600 

14,900 

14,800 

15,100 

14,900

Minimum

9,260 

10,000 

9,560

5,090

6,820 

6,230 

6,710 

5,290 

9,420 

20,100 

14,600 

14,700 

23,400

5,290

Aug.

15,000 

14,700 

14,300 

14,900 

15,100

17,800 

21,300 

24,300 

22,000

18 , 700

25 , 100 

26,700 

25,100 

21,400 

23,800

25,500 

22,700 

25,400 

26,800 

27,600

26,900 

26,900 

24,600 

20,900 

26,900

29,800 

28,200 

28,400 

27,800 

26,700 

24,500

Mean

12,950 

13,040 

12,940

10,980

9,583 

9,005 

8,977 

8,708 

23,340 

30,410 

15,460 

23,240 

26,490

16,200

Sept.

26,000 

29,400 

28,600 

29,500 

32,000

30,200 

24,600 

25, 100 

26,700 

27,000

26,200 

23,400 

25,500 

24,200 

26,400

26,400 

26,000 

25,900 

25,600 

25,200

24,400 

26,900 

27,200 

26,600 

25,400

25,300 

26,100 

24,900 

27,200 

26,900

Run-off in 

acre-feet

796,300 

775,700 

795,900

7,973,000

589,200 

500,100 

552,000 

518,100 

1,435,000 

1,810,000 

950,900 

1,429,000 

1,576,000

11,730,000
COLORADO RIVER MAIN STEM 

Colorado River at Needles, Calif.

23

Location.- Water-stage recorder, lat. 34°50'50", long. 114°36'15B , in NWi sec. 29, T. 9 

N., R. 23 E., San Bernardino meridian, at Needles, Calif., 18 miles upstream from 

gaging station near Topock, Ariz., 57.5 miles upstream from Parker Dam, and 98 miles 

downstream from Boulder Dam. Datum of gage is 466.23 feet, datum of 1929, or 466.39 

feet, adjustment of 1912, above mean sea level; gage readings have been reduced to 

elevation above mean sea level, datum of 1929.

Drainage area.- 170,600 square miles.

Records available.- April 1931 to September 1941 (elevations only).

Extremes.- Maximum elevation during year, 472.77 feet June 16; minimum, 468.25 feet

1931-41: Maximum elevation, that of June 16, 1941; minimum, 466.53 feet Oct. 2, 

1934.

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

ralr. Flow completely regulated by Lake Mead above Boulder Dam.

Dally mean elevation, in feet, water year October 1940 to September 1941

Day

1

2

S

4

5

6

7

8

9

10

11

12

13

14

15

16

IV

18

19

20

21

28

25

24

25

26

8V

28

29

30

31

Oct.

469.45

469. SO

469.93

469.86

469.93

470.08

469.90

470.05

469.95

469.85

469. S9

469.92

469.91

469.69

469.80

469.69

469.69

469.64

469.65

469.89

469.62

469,89

469.43

469.39

469.30

469.53

469.28

468. 9S

469.55

469.75

469.95

NOT.

470.05

470.10

470.16

470.09

470.20

470.01

469.98

469.9V

470.05

470.09

469.72

469.90

470.17

470.00

470.02

469.92

469.90

469.70

469.90

469,94

469.93

469.71

469.82

469.79

469.53

469.77

470.01

470.06

470.08

470,07

Dec.

469.94

469.70

469.90

470.05

470.03

470.00

469.9V

469. SV

469.55

469.8V

470.02

470.13

470.09

470.14

470.09

469.. 94

470.1S

470.14

470.23

470.20

470.16

470.06

469.73

469.77

469.84

469.47

469.60

469.46

469.64

469.45

469. S2

Jan.

469.53

468.99

468.96

469.08

469.04

46S.96

469.03

469.40

469.36

469.36

469.29

468.97

468.73

468.98

469.29

469.24

469.22

469.19

469,06

463.80

468. 9*3

469.32

469.40

469.4S

469,58

469.41

469,16

469.12

469.25

469.26

469.22

Feb.

469.19

469.01

466.61

468.70

469,10

469.1V

469.22

469.18

469.04

46S.70

468,82

469,22

469,16

469,09

469.15

469.00

46S.70

468.82

469.19

469.27

469.24

8469.2

a468.9

a468.V

a469.0

a469.1

a469,l

a469.2

-

..

-

Mar.

8469.3

a469 . 1

a468.8

a469.1

a469.1

a469.2

469,18

469.21

469.24

469.0V

469.17

469.35

469.48

469.56

469.45

469.23

469.01

469.20

469.43

469.36

469,33

469.24

469,28

469.05

469.14

469.54

469,53

469.51

469,51

469.51

469.21

Apr.

469.31

469.61

469.50

469,4V

469.56

469.73

469.49

469.11

469.4V

469.56

469.81

469,7V

469.74

469.36

469.47

469,92

469.91

469. SB

469.86

469.75

469.30

469,29

469.74

469.73

469.74

469.79

469.83

469.58

469.46

470,04

-

May

469. 9S

469.8V

470.10

470.08

470,05

470,04

470.03

470.15

471.39

471.45

471.39

471.41

471,32

471,25

471.29

471.49

471.45

471.64

471.69

471.76

471.90

471.92

472.04

472.15

472.13

471.94

471.99

471.9V

472.16

472.19

472.32

June

4V2.30

472.21

472.19

472.45

4V2.44

472.45

472.41

472.48

472.50

472.45

0472,6

C472.6

C472.V

0472.6

C472,V

472.71

472.54

472.65

472.61

472.56

472.39

472.50

472.45

472.36

472.16

472,00

471,91

471.81

471.56

471.50

-

July

471.47

471.46

471.42

471.30

471.17

470.90

470.8V

470.89

470.86

470.69

470.95

470.97

471.03

471.01

470,99

470.93

470.90

470.96

470.96

471 .00

470 .90

470.84

470.89

470.89

470.87

470.84

470.80

470.64

470.63

4V0.78

4V0.78

Aug.

470.77

470.77

470.80

470.80

470. Si

470.86

471.04

471.59

471. S9

471.69

471.21

471.84

472.01

471.86

471,43

471.6V

471.95

471.66

471.84

472.03

472.14

4V2.14

472,00

471 .76

471.26

471 *9V

472.15

472.02

472.01

4V2.02

471.91

Sept.

471 .70

471.86

472.16

472.10

472.16

472.33

472.16

471 .76

471.82

471.96

472.0V

471.91

471.65

471.82

471 ,64

471.85

471.8V

471 ,V9

471.68

471.59

471.63

471.54

4V1.V9

471 .87

4V1.77

471.6V

4V1.63

4V1.6V

4V1.5S

471.81

-
24 COLORADO RIVER 'MAIN STEM

Colorado River near Topock, Arlz.

itIon.- Water-stage recorder, lat. 34°41 ! 15", long. 114°27'45", In NWi sec. 13, T. 15 

JJ., R. 21 W., Oila and Salt River meridian, In Mohave Canyon, 3 miles downstream from 

Topock, 40 miles upstream from Parker Dam, and 116 miles downstream from Boulder Dam. 

Datum of gage is 423.02 feet above mean sea level, datum of 1929, or 423.08 feet above 

mean sea level, adjustment of 1912. Auxiliary water-stage recorder, used in determining fall, lat. 34542'55", long. 114°29'10", in NEi sec. 3, T. 15 N., R. 21 W., at highway bridge at Topock, 2.7 miles upstream.

Drainage area.- 172,300 square miles.

Records available.- February 1917 to September 1941.

Extremes.- Maximum dally discharge during year, 34,500 second-feet June 16; maximum gage 

height, 25.94 feet June 1; minimum dally discharge, 5,500 second-feet Apr. 29; minimum 

gage height, 20.62 feet Mar. 11.

1917-34 (unregulated): Maximum discharge probably exceeded 200,000 second-feet 

June 22, 1921; minimum, 1,480 second-feet Aug. 17, 1934.

1935-41 (regulated): Maximum discharge, 34,900 second-feet Feb. 2, 1939; minimum, 

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 the high 

years 1862 or 1867.

Remarks.- Records good. Records computed on basis of mountain standard tine. Discharge 

computed by using fall as determined by auxiliary water-stage recorder as a factor. 

Diversions above station for irrigation. Flow regulated at Boulder Dam; no regulation 

between Boulder Dam and this station. Elevations given in the following table are in 

agreement with datum of 1929

Daily moan elevation^ in feet, water year October 1940 to September 1941

Day

1

8

Z

4

e

6

7

s

9

10

11

18

13

14ie

16

17

18

19

£0

21

22

23

24

25

26

27

28

29

30

31

Oct.

445.52

446.02

446.10

446 . 12

446.10

446.08

446.03

445.95

446,02

446.00

446.00

445.99

446.08

446.06

445.92

446.03

446.10

446.12

446.05

446.05

446.10

445.97

445.96

445.74

445.68

445.66

445.76

445.52

445.28

445.49

445.63

Nov.

445.65

445.60

445.62

445.57

445.46

445.52

445.44

445.44

445.62

445.80

445.84

445.77

445.95

446.15

446.12

446.08

446.06

445.95

445.83

445.99

446.03

446.00

445.76

445.86

445.78

445.53

445.73

445.90

445.93

445.83

-

Dec.

445.71

445.52

445.29

445.47

445 . 55

445.56

445 51

445.46

445.32

445.15

445.46

445.65

445.74

445.73

445.73

445.62

445.59

445.76

445.80

445.86

445.78

445.81

445.67

445.45

445.69

445.59

445.49

445.50

445.59

445.65

445.35

Jan.

445.51

445,23

444.72

445.01

444.99

444.95

444.76

445.08

445.12

444.99

444.89

444.68

444.34

444.01

444.40

444.55

444.59

444.61

444.57

444.41

444.14

444.52

444.81

444.91

445.03

444.98

444.83

444.52

444.68

444,85

444.91

Fet>,

444.95

444.91

444.63

444.05

444.40

444,69

444.39

444.97

444.96

444.69

444.07

444.42

444.85

444.90

444.83

444.98

444.86

444.47

444.66

444.90

444.94

444.35

444.73

444.46

444.18

444.45

444.49

444.44

_

-

Mar.

444.44

444.64

444.43

444.05

444.23

444.15

443.97

443.82

443.84

443.82

443.70

444,08

444.31

444.58

444. SO

444.32

444.50

444.14

444.35

444.45

444.45

444.40

444.39

444.22

443.99

444.34

444.56

444.60

444.60

444.53

444.36

Apr.

444.13

444.43

444.47

444.45

444.36

444.42

444.43

444.27

444.19

444.84

444.45

444.62

444.72

444.52

444.11

444.41

444.56

444.59

444.63

444.62

444.38

443.97

444.32

444.54

444.59

444.63

444.69

444.57

444.08

444.44

-

May

444.70

444.56

444.46

444.53

444.52

444.53

444.51

444.52

445.17

446.75

447.82

448.^7

448.04

448,04

443.06

448.02

448.07

44S.10

448.20

443.35

443,45

448.55

44S.68

448.70

448.82

44S.68

448.45

448.44

448.39

448.67

448.73

June

44S.S8

448. SI

448.38

443.31

448.51

448.37

448.20

448.16

448.13

447.95

447.94

447.97

447. S3

447.57

447.35

447.33

447.03

446.83

446.89

446.91

446.73

446. S3

447.09

447.86

447.37

447.33

447.21

447.20

446.99

446.72

-

July

446.58

446.51

446.30

446.15

445.36

445.58

445.28

445.14

445.14

445.04

444.93

444.86

444.65

444.80

444.8C

444.87

444.75

444.72

444.71

444.76

444.74

444.64

444.71

444.88

444.92

444.98

444.89

444.32

444.64

445.00

444.91

Aug.

444.91

444.88

444.36

444.75

444.70

444.81

444.91

446.47

445.68

445.63

445.46

445.53

446.06

446. S3

446.04

445.35

445.94

445.96

445.94

446,13

446.45

446.68

446.71

446.57

446.86

446.16

446.68

446,99

447.09

447.09

447.10

Sept.

446.30

446.78

446.98

447.17

447.84

447.50

447. 7S

447.58

447.10

447.08

447.12

447.19

446.95

446.79

446, S3

446.79

446.93

446.96

446.92

446.92

446.93

446.91

446.93

447.13

447.13

447.12

447.10

447.03

446.97

446.95

Note.- Elevations are to datum of 1929.
COLORADO RIVER MfclN STEM 26

Blieharge, In ieoond-feet, of Colorado River near Topoolt, Aril., water year 

October 1940 to September 1941

D.y

1 

8 

3 

4 

6

e

7a

9 

10

11

18 

13 

14 

16

16 

17 

18 

19 

80

81 

88 

83 

84 

86

86 

87 

88 

89 

30 

SI

Oot.

10,400 

18,100 

18,700 

13,000 

18,900

13,000 

13 ,000 

18,600 

18,900 

18,800

18,800 

18,800 

13,100 

18,900 

18,600

18,900 

13,100 

13,300 

13,000 

13,100

13,300 

13,800 

13,100 

18,400 

18,300

18,800 

18,600 

11,700 

10,700 

11,800 

18,400

NOT.

18.000 

18,700 

13,000 

13,100 

18,900

13,100 

18,900 

18,800 

13,000 

13,200

13,000 

18,700 

13,100 

13,600 

13,400

13,800 

13,000 

18,400 

18,000 

12,700

12,800 

18,900 

18,800 

18,600 

12,400

11,700 

12,400 

13,100 

13,800 

13,000

Deo.

18.700 

18,000 

11,400 

18,000 

18,300

18(600 

18,800 

18,800 

18,400 

11,900

12,900 

13,700 

14,200 

14,200 

14,100

14,000 

13,800 

14,600 

14,600 

14,600

14,600 

14,600 

13,800 

13,000 

13,700

13,800 

18,200 

12,100 

12,400 

18,600 

11,600

Jan.

12,400 

11,000 

9,000 

10,000 

9,960

9,900 

9,210 

10,600 

11,000 

10,800

10,400 

9,680 

8,460 

7,640 

9,170

9,670 

9,640 

9,460 

9,260 

8,610

7,680 

9,110 

10,200 

10,400 

10,900

10,600 

9,900 

8,470 

9,060 

9,460 

9,700

Feb.

9,700 

9,680 

8,620 

6,790 

7,790

8,400 

9,040 

9,330 

9,430 

8,780

6,790 

7,920 

9,230 

9,890 

9,270

9,710 

9,330 

7,960 

8,740 

9,690

10,200 

10,000 

9,860 

8,800 

7,860

9,, 140 

9,660 

9,780

Month

Oot 

Hoi

Dee

C

Jar 

Pet 

Mai 

API 

«a, 

Jur 

Ju] 

Auj 

Sei

1

y.. ....................................

ater year 1940-*

Mar.

10,000 

10,900 

10,100 

8,710 

10,100

10,300 

9,620 

8,910 

8,840 

8,380

7,660 

8,700 

9,670 

10,700 

11 ,100

10,700 

9,460 

8,160 

9,020 

9,370

9,210 

6,870 

6,760 

6,160 

7,260

6,490 

9,160 

9,310 

9,370 

9,880 

6,600

Apr.

7,660 

8,680 

9,300 

9,400 

9,600

9,700 

9,900 

9,400 

9,000 

9,000

9,600 

9,940 

10,800 

'9,260 

7,430

6,660 

9,000 

8,900 

8,600 

8,700

7,700 

6,400 

7,600 

8,800 

6,200

8,200 

8,100 

7,600 

6,600 

7,900

Seoondfoot-daye

390,400 

364,600 

407,000

3,987,730

300,920 

260,460 

266 ,810 

267,470 

662,600 

923,100 

461,200 

677,600 

766,600

 5,788,760

«ay

,400 

,300 

,200 

,640 

,730

,660 

,600 

,660 

12,100 

19 ,900

23,200 

24,400 

83,800 

84,000 

24,400

24,000 

24,400 

24,600 

26,600 

26,800

26,600 

27,100 

27,600 

27,700 

28 ,600

88,600 

87,700 

28,100 

26 ,000 

29,600 

30,600

Maximum

13,300 

13,600 

14,600

17,200

12,400 

10,200 

11,100 

10,800 

30,800 

34,600 

20,000 

87,800 

30,400

34,600

June

31 ,700 

38,000 

30,900 

31,700 

34,200

34,000 

33 ,600 

33,000 

32,700 

32,600

32,000 

33,600 

33,600 

34,000 

34,000

34,600 

34,000 

33,000 

34,000 

38,600

31 ,600 

29,800 

29,400 

26 ,800 

26,600

26,600 

24 ,600 

84,000 

82,600 

20,600

July

20,000 

20,000 

80,000 

19,800 

18,900

17,400 

16,100 

16,400 

16,100 

14,700

14,600 

13,900 

14,100. 

14,000 

14,600

14,800 

14,600 

14,600 

14,600 

14,600

14,700 

14,200 

14,400 

14,700 

14,900

14,900 

14 ,600 

14,300 

13,600 

14,900 

14,700

Minimum

10,400 

11,700 

11,400

4,980

7,640 

6,790 

7,280 

6,600 

9,200 

20,600 

13,600 

14,200 

24,100

6,600

Aug.

14,700 

14,700 

14,600 

14,300 

14,200

14,800 

16,600 

16,900 

20,700 

21,400

20,400 

20,600 

23 ,700 

24,600 

23,400

22,000 

23,000 

24,000 

23,600 

24,000

86,200 

26,600 

26,400 

26,400 

23,100

22,000 

25,600 

27,400 

27,800 

27,600 

27,400

Mean

12,690 

12,820 

13,130

10,730

0,707 

6,946 

9,262 

6,668 

21,870 

30,770 

16,620 

21,660 

25,660

16,660

Sept.

28,800 

24,600 

86,400 

27,000 

87,800

86 ,800 

30,400 

88,800 

26,300 

84,600

26,OQO 

 26,800 

84,600 

24,100 

24,600

24,200 

26,300 

28,300 

26,800 

26,600

26,000 

84,700 

24,400 

86,700 

26,900

86,400 

84,600 

24,600 

24,400 

24,600

Run-off in 

aore-feet

774,800 

762,800 

807,300

7,790,000

696,900 

496 ,600 

666 ,900 

510,700 

1,314,000 

1,831,000 

964,400 

1,344,000 

1 ,621 ,000

11,460,000

Hote.- Slope-itage-dleefaarge relation unetable Apr. 3-11, Apr. 17 to Hay 3, June 10-23, June 87 

to July 4, Aug. 17-80, and Sept. 10-18) ilioharge computed on baaii of reoordt for Lake Havatu aftei 

adjusting for known inflow and outflow and for Colorado River below Boulder Dan,
26 COLORADO RIVER MAIN STEM

Lake Havasu near Parker Dam, Arlz.-Calif.

Location.- Water-stage recorder, lat. 34°19', long. 114°09', In SWi sec. 28, T. 3 N., R. 

Sm7~San Bernardlno meridian, at Intake pumping plant of Ifetropolitan Water District 

of Southern California, 1.8 miles upstream from Parker Dam on Colorado River, which is 

156 miles downstream from Boulder Dam. Datum of gage is 400.54 feet above mean sea 

level, datum of 1929; 400.00 feet above mean sea level, adjustment of 1912; 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 1941.

Extremes.- Maximum contents during year, 516,300 acre-feet June 27 (elevation of water 

surface, 442.78 feet); minimum, 278,200 acre-feet June 12 (elevation, 429.32 feet). 

1938-41: Maximum contents, 622,500 acre-feet Sept. 7, 1939 (elevation of water 

surface, 447.72 feet).

Remarks.- Lake is formed by concrete-arch dan; dam completed and storage began July 1, 

1938. Usable capacity, 688,000 acre-feet, between elevations 400.54 feet (sill of 

regulating gates) and 450.54 feet (top of regulating gates) above mean sfea level. Daad 

storage, 2ff,600 acre-feet below elevation 400.54 feet. Drawdown 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, for re-regulation of river for 

Irrigation demand, and as a basin from which water 1-s pumped by Metropolitan Water 

District of Southern California to Colorado River aqueduct (see p. 234). Figures given 

herein represent usable contents.

Elevation, In feet, at 12 p.m., water year October 1940 to September 1941

Day

1

2

3

4

6

6

7

8

9

10

11

12

13

14

IB

16

17

18

19

20

21

22

23

24

25

26

27

28

29

SO

SI

Oct.

440.54

44O.3S

440.42

440.52

440.56

440.64

440.66

440.60

440.60

440.54

440.46

440.46

440.46

440.44

440.32

440.28

440. g6

440*. 2 2

440.14

440.08

440.06

439.96

439.86

439.68

439.40

439.24

439.12

438.86

438.46

438.16

438.04

Hov.

438.06

436.08

438.24

438.32

438.34

438.4S

43S.S6

439.32

439.92

440.40

440.88

441.10

441.14

441.10

440.98

440.88

440.72

440.68

440.34

440.12

439.96

439.94

439.60

439.38

439.12

438.68

438,42

438.30

438,24

438.18

-

Dec.

438.16

438.10

437.98

437.96

43S.OO

438,04

436.10

43S.14

438.10

437.90

437.78

437.96

438.08

438.22

438.36

438.94

438.84

438. SO

438.80

438.84

438.64

438.78

438.60

438.48

439.48

439.46

438.98

438.44

437.94

437.44

437.30

Jan.

437.58

437.46

437.06

436 .84

436.64

436.32

435,84

435.54

435.54

435.64

435.64

435.82

435 . 98

436.06

436.30

436.66

436.96

437.28

437.52

437.68

437 .68

437.66

437.66

437.58

437.74

437.60

437.66

437.52

437.50

437.50

437.50

Feb.

437,50

437.54

437.54

437.38

437.38

437.42

437.54

437. 6S

437.70

437.38

437.44

437.52

437.52

437.50

437.48

437.50

437.48

437,40

437.50

437.58

437.88

437 ,76

437.68

437.48

437.62

437.14

437.08

437.06

_

-

Mar.

437.22

436.84

438.22

437.38

436.94

437.00

436. S8

436.84

436.92

436.96

436.88

437.04

437.30

439.06

440.40

439.74

438.66

437.50

437.10

436.92

436.78

436.68

436,66

436.62

436.42

436.34

436.34

436.32

436.36

436.40

436.38

Apr.

436.16

436.16

436.20

436 . 24

436.34

436.36

436.54

436.54

436.42

436.36

436.50

437.02

437.30

437.80

436.98

437.00

436.84

436.64

436.90

436.96

436.82

436.56

436.42

436.34

436.30

436.34

436.54

436.70

436.30

436.12

-

May

436.14

436.14

436.22

436.34

436.44

436.56

436.64

436,68

436.76

436.94

437.22

437.28

437.08

437.12

437.16

437.18

 437.16

437.24

437.18

437.12

436.88

436.68

436.76

436.60

436.42

435.98

435.14

434.20

433 . 20

432.40

431.76

June

431.22

430.76

430.20

429.76

429.64

429.54

429.52

429.44

429.46

429.42

429.34

429.42

429.58

430.22

431.22

432.58

434.08

435,58

437.06

438.40

439.52

44O.48

441.34

441.98

442.48

442.52

442.66

442.44

442.10

441.62

-

July

441.16

440.76

440.44

440 . 28

440.16

440.02

439.94

439.86

439.82

439.78

439.60

439.48

439.32

439.16

439.04

438.92

438.82

438.82

438,78

438.78

438.78

438.84

439.10

439,46

439,74

439,76

439.76

439.80

439.68

439.70

439.68

Aug.

439.64

439.60

439.52

439.46

439.40

439.34

439.28

439.34

439.54

439.72

439.90

439.92

440.10

440.12

439.98

439.72

439.58

439.50

439.36

436.30

439.44

439.60

439.70

439.68

439.48

439.24

439.28

439.36

439.48

439.52

439.50

Sept.

439.30

439.16

439.22

439.32

439.40

439.54

439.90

440.04

440.02

439.64

439.26

439.00

438.74

438.78

438.00

438.72

438.70

438.70

438.68

438.70

438.66

438.54

438.48

438.52

438.64

438.78

438.74

438.72

438.56

436.38

-

Mote,- Elevations are mean aea level, datum of 1929. Mountain standard time used.
COLORADO RIVER MAIN STEM 27

Uaatle contents, In thousands of aore-feet, at 12 p.m., of Lake Havasu near Parker Dam, Arls.-Calif, 

water year October 1940 to September 1941

Day

1

2

S

4

5

6

7

8

9

10

11

12

IS

14

15

16

17

18

19

20

21

22

S3

24

25

26

27

28

29

so

31

Oct.

471.50

468.5

469.3

471.1

471.7

473.3

473.9

472.7

478.5

471.5

470.8

469.8

470.0

469.6

467.3

466.4

466.0

465.8

463.9

462.8

462.8

460.3

458.6

455.0

449.6

446.8

444.3

439.6

431.9

426.7

484.5

NOV.

484.7

485.8

428.1

429.4

429.9

432.2

439.4

448.3

459.5

468.8

478.1

488.5

483.3

482.5

480.3

478.3

474.9

474.1

467.7

463.3

460.5

460.1

453.4

449.5

444.3

436.8

431.2

489,0

427.9

426.8

-

Deo.

426.5

425.6

423.4

483.1

423.6

484.3

435.6

426.3

485,6

488.0

419,6

483.1

425.8

487.6

430.3

441.1

439,0

438.4

438.4

439.8

439.0

437.9

434.6

432.4

451.2

451.0

441.7

431,5

422.5

413.7

411.0

Jan.

416.1

414.8

406.7

408.9

399.3

393.5

384.9

379.5

379.3

381.1

381.3

384.4

387,4

388.7

393.0

399.7

405.1

410.6

415.1

417.8

417.8

417.5

415.7

416.0

419.1

416.6

41B.7

415.1

414.8

414.6

414.8

Pet).

414.6

415.5

415.3

412.6

412.4

413.2

415.5

417.8

418.4

418.4

413.5

415.0

415.0

414.8

414.4

414.8

414.4

413,0

414.6

416.8

481.4

419.3

417.8

414.8

416.9

408.3

407.2

406.7

..

_

-

Mar.

409.7

439.0

487.6

418.4

404.7

405.6

403.6

408.9

404,2

404.9

403.4

406.3

411.2

443.4

468.6

456,1

435,8

414.8

407.6

404,3

401,6

400,0

399.7

398,8

395,2

393.9

393.7

393.4

394.3

395.0

394,6

Apr.

390.5

390.7

391.4

398.1

393.7

394.3

397,3

397.5

395.3

394.3

396.8

406.1

411.0

480.8

405.8

405.8

408.9

402.7

404,0

404.9

402.4

397.7

395,2

393.9

393.2

393.7

397.5

400.2

393.2

389.8

*«T

390.1

390.3

391.7

393.9

395.7

397.7

399.1

400.0

401.5

404.5

409.7

408.8

407.0

407.8

408.7

409.0

408.5

409.9

408.8

407.9

403.6

399.8

401.5

398.6

395.8

387.2

378.5

356.6

339.7

326.3

315.9

June

307.6

300.0

891.4

284.8

283.0

281.4

281,2

280.0

880. 5

279.7

278.4

279.6

282.1

291.6

307.2

329.2

354.5

380.0

406.9

431.0

451.9

470.4

487.5

500.3

510.1

510.9

514.2

509.3

508.5

498.9

-

July

484.1

476.3

469.6

466.4

464.1

461.6

460.1

458.4

457.6

457.1

453.6

451.2

448.1

445.1

442.8

440.5

438.6

438.6

437.9

438.1

438.1

439,0

444.0

451.0

456.1

456.7

456.7

457.2

455,2

455.5

455.0

Aug.

464,4

453.4

451.9

450.8

449.6

448,5

447.4

448.7

452,3

455,9

459.8

459.7

463.1

463.5

460.7

455.9

453.3

451.7

449.1

447,9

450.4

453.6

455.5

455.8

451.8

446.6

447.6

448.9

451.2

451.9

451.6

Sept.

447.9

445.3

446.2

448.3

449.6

452.5

459.2

461.8

461.6

454.4

447.2

442.2

437.1

438.1

438.4

436.7

436.4

436.4

436.2

436.4

435.8

433.5

438.4

433.1

435.2

437.9

437.1

436.9

433.7

430.6

-

461876 0-42-3
28 COLORADO RIVER MAIN STEM

Colorado River below Parker Dam, Ariz.-Calif.

Location.- Water-stage recorder, lat. 34°15'3011 , lone. 114°09'10", in NEi sec. 32, T. 11

 M., ft. 18 W., Qila and Salt River meridian, or NEiSWi sec. 16, T. 2 N., R. 27 E., San 

Bernardino meridian, 4.1 miles downstream from Parker Dam, 11 miles northeast of 

Parker, Ariz., and 160 miles downstream from Boulder Dam. Datum of gage is 346.16 

feet, datum of 1929; or 345.61 feet, adjustment of 1912, above mean sea level.

Drainage area.- 178,800 square miles.

Records available.- February to December 1934 (gage heights and fragmentary discharge 

records), January 1935 to September 1941.

Extremes.- Maximum discharge during year, 35,600 second-feet May 28 (gage height, 29.60

 feet); minimum, 180 second-feet Feb. 11 (gage height, 14.3 feet); minimum daily, 6,200

SeC1935-41 (regulated): Maximum discharge, 42,400 second-feet Feb. 8, 1937} minimum, 

that of Feb. 11, 1941; minimum dally, 1,440 second-feet Feb. 15, 1935.

An 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. Diversions above station for Irrigation. Flow regulated

 at Boulder and Parker Dams. Records computed on basis of mountain standard time. 

Water spilled from Gene Reservoir on Colorado River aqueduct returned to Lake 

Havasu above station. No return surface flow from Copper Basin Reservoir during year. 

Some water probably returned to river both above and below station by percolation from 

both reservoirs. During the year 204 discharge measurements were made.

Discharge, in second-feet, water year October 1940 to September 1941

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.

12,200 

12,200 

12,200 

12,200 

12,300

12,300 

12,300 

12,300 

12,800 

13,100

13 ,100 

13,100 

13 ,100 

13,100 

13 ,000

13,000 

13,100 

13,500 

13,500 

13,800

13,500 

13,500 

13,500 

13,400 

13 ,400

13,400 

13,400 

13 ,300 

13,200 

13 ,100 

12,900

NOT.

12,000 

11,600 

11 ,600 

11,800 

12 ,100

11,800 

9,240 

8,120 

3,300 

3,340

8,400 

9,570 

11 ,700 

13,500 

14,000

13,900 

13 ,800 

13,800 

13,900 

14,000

14,000 

14,000 

14,000 

13,900 

14,000

14,100 

14,000 

14,000 

13,900 

13 ,800

Dec.

13,500 

12,900 

12,500 

12,500 

12,600

12,600 

12,600 

12,600 

12,600 

12,600

12,600 

12,500 

12,600 

12,500 

12,700

8,340 

14,400 

14,100 

14,100 

14,100

14,300 

14j800 

18,000 

15,000 

15,400

16,300 

17,000 

16,900 

17,000 

16,600 

14,400

Jan.

13,900 

14,000 

13,600 

12,300 

12,200

12,800 

13,200 

13 ,300 

11,100 

10,900

10,800 

9,420

3,420 

7,990 

7,490

6,880 

6,SSO 

6,880 

6,800 

6,910

6,910 

8,460 

10,000 

9,640 

9,900

13,400 

11,400 

10,000 

10,200 

10,200 

10,200

Feb.

10,100 

9,260 

0,S70 

3,220 

8,170

8,170 

6,150 

6,510 

9,300 

11,400

6,980 

7,800 

9,320 

9,300 

9,280

9,300 

9,300 

8,720 

8,080 

9,120

10,200 

14,300 

14,500 

13,400 

14,100

15,900 

12,300 

10,700

Month

Oct 

NOT 

Dec

C

Jai 

Fel 

Mat

Apl

S3Ju3 

Auj 

Sej

1

alendar year 194to. .....................

rater year 1940-4

liar.

9,380 

14,300 

19,600 

17,600 

15,400

12,000 

11,900 

10,700 

8,970 

8,660

8,640 

8,620 

8,910 

14,500 

20 ,400

20,300 

20,000 

19,000 

13,200 

11 ,700

11,100 

10,500 

9,740 

9,140 

9,100

9,080 

9,080 

9,080 

9,080 

9,080 

9,200

Apr.

9,180 

9,160 

9,180 

9,180 

9,180

9,200 

9,220 

9,240 

9,240 

9,240

9,240 

9,580

17,400 

21 ,000 

18,700

14,600 

12,200 

10,400 

9,220 

9,160

9,160 

8,950 

8,760 

8,720 

8,620

8,3SO 

6,200 

6,380 

8,990 

9,000

Secondf cot-days

402,600 

371 ,170 

427,540

3,859,940

315,960 

282,690 

377 ,960 

306 ,680 

685 ,120 

820 ,800 

503,000 

671,300 

770,300

5,935,040

May

8,990 

8,990 

8,990 

8,990 

9,000

9,000 

9,020 

9,040 

10,700 

17,100

19,700 

24,100 

24,000 

24,000 

24,000

24,100 

24,100 

24,100 

24,600 

25,700

27 ,700 

28,600 

27,100 

28,600 

29,900

31,100 

33,200 

36,000 

36,000 

35,400 

35,300

Maximum

13,500 

14,100 

17,000

17,000

14,000 

15,900 

20,400 

21,000 

35,400 

36,000 

23 ,800 

27,100 

27,800

36,000

June

36,000 

35,600 

35,100 

34,600 

33 ,900

33,900 

33,900 

32,800 

32,700 

32,700

32,600 

32,300 

31,600 

29,100 

26,200

23,300 

21,600 

20,200 

20,100 

20,200

20,100 

20,000 

20,300 

21,000 

22,000

23,400 

21,600 

24,800 

24,600 

24,400

July

23,800 

23,200 

22 ,700 

21,100 

19,600

18,100 

16 ,600 

16,000 

15,700 

15,700

16,000 

15,900 

15,900 

15,900 

15,900

15,800 

15 ,800 

18 ,300 

14,900 

14,900

14,700 

14,200 

12,200 

12,100 

12,400

14,500 

14,900 

14,300 

15,100 

14,800 

14,800

Minimum

12,200 

8,120 

8,340

4,860

6,800 

6,920 

8,620 

6,200 

8,990 

20,000 

12,100 

15,000 

84,100

6,200

Aug.

15,000 

 15,000 

15,100 

15,200 

15,200

15,200 

15,200 

16,400 

18,500 

19,700

20,200 

20,200 

20,900 

24,000 

24,600

24,400 

24,300 

24,300 

24,200 

24,100

24,100 

24,600 

25,300 

25,300 

26,000

24,100 

24,600 

26,100 

26,300 

27,100 

27,100

Mean

12,980 

12,370 

13,790

10,550

10,190 

10,100 

12,190 

10,220 

22,100 

27,360 

16,230 

21,650 

26,680

16,260

Sept.

27,000 

25,300 

25,200 

26,200 

26,700

26,700 

26,600 

26,400 

24,700 

27,800

27,600 

27,500 

27,200 

25,900 

24,700

24,700 

24,700 

24,800 

25,100 

25,100

25,100 

26,000 

25,000 

25,000 

25,000

24,100 

25,000 

26,000 

25,300 

26,700

Run-off in 

acre-feet

798,300 

736,200 

848,000

7,656,000

626,700 

560,700 

749,700 

608,300 

1,359,000 

1,628,000 

997,700 

1,332,000 

1,528,000

11,770,000
COLORADO RIVER MAIN STEM 29

Colorado River near Plcacho, Calif.

Location.- Water-stage recorder, lat. 33°02'00", long. 114°33'00", In NWi sec. 22, T. 13

 -S., K. 23 E., San Bernardlno meridian, 4 miles downstream from Plcacho, 14* miles upstream from Imperial Dam, 133 miles downstream from Parker Dam, and 289 miles downstream from Boulder Dam. Datum of gage Is 167.38 feet above mean sea level, datum of 

1929.

Drainage area.- 184,100 square miles.

Records available.- July 1934 to September 1941.

Extremes.- Maximum dally discharge during year, 34,500 second-feet June 3; minimum dally,

 5T500~second-feet Apr. 29.

1935-41 (regulated): Maximum discharge, 40,800 second-feet Sept. 5, 1939 (elevation, 186.13 feet); minimum, 990 second-feet July 4, 1938; minimum dally, 1,450 secondfeet Feb. 17, 1935.

For a period extending back to 1902 or longer: unregulated minimum discharge of 538 

second-feet and unregulated minimum dally discharge of 568 second-feet, occurring Aug. 

3, 1934.

Remarks.- Records excellent Oct. 1 to Dec. 31, good thereafter. Diversions above station

 ToFTrrlgatlon. Flow regulated at Boulder Dam since Feb. 1, 1935, and at Parker Dam 

since July 1, 1938. Records computed on basis of mountain standard time. Mean sea 

level elevation of spillway crest of Imperial Dam, 181.0 feet (datum of 1929). Normal 

operating level of Imperial Reservoir, 179.5 feet.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

1C.SOO 

10,700 

10,600 

10,600 

10,300

10,900 

11,100 

11,100 

11,000 

11, 100

11,500 

11,700 

11,800 

11,800 

11,900

11,300 

11,500 

11,700 

12,000 

12,400

12,300 

12,300 

12,200 

12,200 

12,200

12,300 

12,400 

12,400 

12,500 

12,500 

12,500

Nov.

12,400 

12,000 

11,300 

10,600 

10,800

10,300 

11,100 

10,300 

6,490 

7,930

7,980 

7,960 

7,930 

9,630 

11,200

12,600 

13, 100 

13,300 

13,300 

13,200

13,300 

13,400 

13,100 

13,200 

13,300

13,300 

13,400 

13,400 

13,400 

13,300

Dec.

13,300 

13,200 

12,SOO 

12,300 

12,000

12, 000 

11,800 

11,900 

12,000 

11,900

11,900 

11,800 

11,800 

11,800 

12,000

12,000 

11,400 

11,000 

13,000 

13,400

13,400 

13,400 

13,700 

14,500 

15,100

14,700 

14,900 

15,600 

16,200 

16,500 

16,700

Jan.

16, 000 

14, 600 

14,000 

13,900 

13,300

12,400 

12,600 

13,100 

13,300 

12,800

11,600 

10,900 

10,200 

8,950

3,140

7,790 

7,300 

7,010 

6,920 

6,930

6,920 

6,390 

6.890 

3,380 

9,630

9,190 

10,200 

12,700 

10,900 

9,910 

10,200

Feb.

9,960 

9,860 

9,630 

3,830 

6,490

3,060 

8,030 

6,030 

7,960 

3,490

9,240 

10,700 

6,800 

7,890 

S,710

8,790 

3,830 

S.790 

S,710 

3,140

7,760 

3,640 

10,300 

14,000 

13,800

12,600 

14,400 

14,500

Month

Dot 

Hoi 

Dec

C

Jar 

Pet 

Mat 

Api 

Ha3 

Jm

JU]

me

Set

1

alendar year 194 o................ ....;.

i ....»» *

rater year 1940-4

Mar.

11, 700 

10,300 

9,720 

15, 500 

18,300

16,900 

13,400 

11,100 

10,900 

9,490

8,530 

S,240 

6,380 

8,790 

10,400

17,000 

19,800 

20,500 

20, 100 

17,500

13,400 

11,900 

11,100 

10,300 

9,430

3,920 

8,790 

8,660 

3,460 

8,460 

8,490

Apr.

3,420 

3,320 

6,290 

8,290 

6,360

8,390 

6,490 

3,420 

8,290 

8,130

3,320 

3,690 

8,720 

10,900 

17,200

19,300 

17,600 

13,700 

10,500 

9,000

3,500 

6,500 

8,500 

8,200 

8,000

7,800 

7,600 

7,000 

5,500 

6,000

Secondfoot -days

362,600 

349,200 

408,000

3,618,450

323,800 

269,940 

374,460 

283,430 

579,600 

809,100 

486,500 

600,300 

727,900

5,576,330

 ay

7,700 

8,000 

8,000 

8,100 

3,200

8,200 

8,000 

8,000 

8,000 

8,200

11,000 

15,000 

IS, 500 

21,500 

22,000

22,000 

22,200 

22, 200 

22,600 

22,800

23,200 

23,700 

24,400 

26,000 

25,700

26,600 

27, 600 

2S,200 

29,500 

31,500 

33,000

MJRXlBMHn

12,500 

13,400 

16,700

16,700

16,000 

14,600 

20,600 

19,800 

33,000 

34,500 

23,500 

23,700 

26,300

34,600

June

34,000 

34,200 

34,500 

34,200 

33,700

33,300 

33, 100 

33, 000 

32,500 

32,000

31,800 

31,700 

31, 600 

31,300 

30,000

26,000 

26,000 

22,000 

20,000 

19,400

19,200 

19,200 

19,200 

19,200 

19,500

20,000 

21,000 

21,500 

21,500 

23,600

July

23,500 

23,200 

22,600 

22,000 

21,000

19,500 

18,000 

16,500 

15,500 

14,800

14,800 

14,700 

14,300 

14,900 

14,900

14,800 

14,800 

14,800 

14,500 

14, 100

13,800 

13,800 

13,400 

12,500 

11,300

11,200 

12,000 

13,500 

13, 800 

13,500 

14,000

Minimum

10, 600 

7,930 

11,000

3,930

6,890 

6,800 

8,240 

5,500 

7,700 

19,200 

11,200 

13,900 

23,600

6,600

Aug.

13,900 

13,900 

14,000 

14,000 

14, 100

14,200 

14,200 

14,200 

15,000 

16,700

18,500 

19,000 

19,000 

19, 400 

20,200

21,900 

22,400 

22,600 

22,500 

22,500

22,300 

22,000 

21,900 

22, 100 

22,700

22,800 

22,700 

22,400 

22,700 

23,300 

23,700

Mean

11,700 

11,640 

13,160

9,613

10,460 

9,641 

12,080 

9,448 

18,700 

26,970 

15,690 

19,380 

24,260

15,270

Sept.

24,200 

24,500 

24,500 

23,900 

23,900

24,100 

24,600 

24,600 

24,600 

24,500

24,100 

24,700 

25,000 

25,200 

24,900

24,600 

24,100 

23,700 

23,700 

23,700

23,800 

23,700 

23,700 

23,600 

23,600

23,600 

23,700 

25,300 

25, 100 

24,600

Run-off In 

acre-feet

719,200 

692, 600 

809,300

6,979,000

642,200 

535,400 

742,700 

562,200 

1,160,000 

1,605,000 

966,000 

1,192,000 

5,444,000

11,060,000

»ote.- No gage-height record Apr. 19 to July 9 and July 13 to Aug. 9: discharge confuted on basis 

of records at stations on Colorado River below Parker Dam and at Tuna, Olla RlTer near Dome, and 

records of dirersIons to Oolorado River Indian Reservation, Falo Verde canal. All Amerlean canal, 

Yuaa Main canal, and North Olla Valley canal at Laguna Dan, and changes In contents of Imperial 

Reservoir.
30 COLORADO RIVER MAIN STEM 

Colorado River at Yuma, Ariz.

Location.- Water-stage recorder, lat. 32°43'45", long. IWSV'IS", in NWiNEi sec. 35, 

T. 16 S., R. 22 E., San Bernardino meridian, 1,800 feet downstream from highway 

bridge at Yuma, 5 miles downstream from Gila River, 19 miles downstream from Imperial 

Dam, and 7 and 29 miles upstream from international boundaries of California and 

Arizona respectively, with Mexico. Datum of gage is 102.79 feet, datum of 1912 and 

1929, and 102.25 feet (Yuma project datum) above mean sea level (subject to correction due to undetermined changes caused by earthquake of May 18, 1940).

Drainage area.- 242,900 square miles, including all closed basins entirely within the 

drainage boundary.

Records available.- January 1878 (revised) to December 1901 (gage heights only), January 

1902 to September 1941.

Extreaes.- Maximum discharge during year, 30,400 second-feet June 5, maximum gage height, 

22.82 feet June 7; minimum discharge, 3,510 second-feet Feb. 21 (gage height, 14.71 

feet) caused by regulation at Laguna Dam; minimum daily, 4,120 second-feet Feb. 13.

1902-41: 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.

Remarks.- Records excellent. Many diversions for irrigation from Colorado River and 

tributariea. Principal diversions below Parker Dam are Colorado River Indian 

Reservation canal (p. 235), Palo Verde canal (p. 236), Ail-American canal (p. 31 ), 

North Gila canal (diversion in water year 1941, about 27,000 acre-feet), and Yuma 

main canal (p. 34 ). Water was by-passed around Yuma river station and returned to 

river half a mile downstream through Yuma main canal wastevray (p. 36 ). No water was 

returned to river this year through Pilot Knob wasteway. Flow of Colorado River 

regulated at Boulder, Parker, and Imperial Dams. No regulation on Gila River below 

Gillespie Dam. Records computed on basis of mountain standard time- During the year 

195 discharge measurements were made.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30 

51

Oct.

8,560 

8,530 

8,450 

8,500 

8,830

3,580 

8,670 

8,700 

8,590 

8,550

6,690 

9,500 

9,160 

9,060 

9,170

8,930 

9,000 

9,070 

9,280 

9,520

9,610 

9,660 

9,780 

9,790 

9,780

10,100 

11,500 

11,500 

11,400 

11,500 

11,800

Nov.

11,700 

10,100 

8,840 

8,030 

7,780

7,900 

7,910 

6,200 

4,860 

5,110

5,250 

5,430 

6,140 

6,590 

7,570

8,560 

9,780 

10,100 

9,970 

9,920

10,000 

10,200 

10,20O 

9,980 

10,000

9,980 

9,840 

10,200 

10,500 

10,200

Dec.

10,100 

10,100 

10,100 

9,850 

9,010

3,900 

S,880 

8,900 

9,050 

9,08O

9,150 

9,160 

9,160 

9,150 

8,910

9,520 

10,000 

9,600 

9,480 

11,000

12,100 

10,500 

10,500 

11,600 

12,300

12,100 

11,400 

12,200 

15,100 

14,200 

14,200

Jan.

14,200 

12,600 

11,600 

11,300 

11,100

10,100 

9,170 

9,510 

10,200 

10,600

10,000 

9,08O 

8,650 

7,830 

6,590

5,580 

5,240 

4,620 

4,380 

4,580

4,350 

4,140 

4,510 

4,500 

6,700

6,980 

6,610 

8,510 

10,600 

3,610 

6,870

Feb.

6,820 

6,710 

6,420 

6,280 

5,640

4,900 

4,690 

4,660 

4,530 

4,540

4,910 

5,000 

4,120 

4,790 

4,950

4,890 

4,750 

4,720 

4,740 

4,640

5,050 

4,280 

5,640 

7,630 

9,940

9,650 

9,170 

11,000

Month

Oet 

Nox 

Dec

C

Jar 

Fet 

Hal 

Api 

Haj 

Jur 

Ju3 AUS

Set

11

alendar year 19. LQ ......................

ater year 1940-'

Mar.

10,000 

8,640 

7,000 

9,010 

14,900

15,900 

15,600 

11,200 

9,580 

9,290

8,560 

7,790 

8,330 

8,970 

9,570

11,700 

16,600 

17,700 

18,000 

16,100

16,800 

19,200 

17,400 

15,700 

10,700

8,190 

6,740 

6,360 

6,200 

5,730 

5,530

Apr.

6,540 

6,430 

5,870 

5,790 

5,420

5,250 

5,050 

4,940 

4,240 

4,300

4,980 

5,720 

6,160 

6,220 

9,900

14,000 

15,600 

11,600 

10,300 

15,100

14,700 

17,400 

17,500 

15,000 

10,300

9,330 

7,800 

6,850 

5,580 

4,250

Secondfoot-daya

295,010 

258,840 

325,060

2,741,550

248,650 

165,040 

350,490 

257,880 

535,240 

695,900 

549,160 

475,530 

604, 100

4,552,700

May

4,850 

5,950 

6,790 

6,690 

7,270

7,230 

7,260 

8,570 

9,950 

10,800

10,700 

16,000 

19,900 

22,900 

24,100

25,400 

22,500 

22,700 

21,200 

21,800

21,600 

21,700 

21,400 

21,900 

22,100

22,20O 

22,900 

24,200 

24,400 

25,500 

27,200

Maximum

11,600 

11,70O 

14,200

14,200

14,200 

 11,000 

19,200 

17,400 

27,200 

30,000 

18,700 

19,100 

22,400

30,000

June

27,900 

2S, 900 

29,300 

50,OOO 

30,000

29,500 

29,700 

29,800 

29,400 

28,900

27,800 

27,500 

27,700 

28,500 

27,400

26,500 

24,100 

21,200 

18,200 

15,800

15,800 

15,400 

14,700 

14,800 

14,600

14,600 

15,200 

16,600 

16,500 

17,500

July

13,700 

18,600 

18,400 

13,000 

17,600

16,300 

14,900 

15,000 

11,500 

10,400

9,810 

9,860 

9,930 

10,200 

9,980

9,820 

9,710 

9,840 

10,500 

9,850

9,100 

8,930 

8,970 

8,620 

7,730

6,870 

6,820 

8,050 

9,240 

9,130 

8,800

Minimum

8,300 

4,860 

8,880

5,220

4,140 

4,120 

5,530 

4,230 

4,830 

14,600 

6,820 

8,920 

19,100

4,120

Aug.

9,530 

8,940 

8,920 

9,850 

9,880

9,220 

9,450 

9,770 

9,820 

13,OOO

16,100 

15,200 

15,000 

15,900 

15,400

18, 000 

18,900 

18, 500 

18,500 

18,400

18,500 

18,800 

18,600 

18,500 

18,700

19,000 

18,800 

18,300 

18,000 

18,900 

19,100

Mean \

9,452 

8,628 

10,420

7,490

8,021 

5,894 

11,510 

8,596 

17,270 

23,130 

11,260 

15,270 

20,140

12,470

Sept.

19,900 

20,300 

20,1OO 

19,500 

19,600

19,400 

20,400 

20,400 

20,800 

20,900

20,000 

20,100 

21,800 

22,200 

21,200

20,800 

20,500 

19,600 

19,100 

19,300

19,100 

19,200 

19,300 

19,500 

19,300

19,400 

19,400 

20,000 

22,400 

20,800

Run-off In 

acre-feet

581,200 

515,400 

640,800

5,437,000

495,200 

527,400 

695,200 

511,500 

1,062,000 

1,576,000 

692,500 

958,800 

1,198,000

9,030,000
COLORADO RIVER MAIN STEM 31

All-American canal near Imperial Dam, Calif.

Location.- Water-stage recorder, lat. 32°52'10", long. 114°28'48", in SEiNWi sec. 17, 

T. 15 S., R. 24 E., San Bernardino meridian, on left bank, 6,000 feet downstream from 

canal intake at Imperial Dam. Datum of gage is 150.00 feet above mean sea level, 

datum of 1929 (subject to correction due to undetermined changes caused by earthquake 

of May 18, 1940).

Records available.- October 1939 to September 1941.

Extremes.- Maximum discharge during year, 4,410 second-feet Sept. 28 (gage height, 13.58 

reet ); no flow Dec. 17-21.

1939-41: Maximum discharge, that of Sept. 28, 1941; no flow part of each year.

Remarks.- Records excellent. Flow passing this station is quantity available for 

irrigation on projects below, except for canal losses and waste In Yuma main canal 

wasteway. Water first diverted from All-American canal into Yuma main canal Oct. 8, 

1940.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29

30 

31

Oct.

687 

67S 

67S 

67S 

662

662 

691 

696 

691 

700

740 

808 

S17 

SI 2 

790

790 

790 

786 

7S6 

786

790 

790 

790 

7S1

7S1

S45 

945 

955 

945 

935 

940

NOT.

970 

965 

1,100 

1,100 

1,110

1,120 

1,120 

975 

1,050 

1,060

1,050 

1,110 

1,190 

1,230 

1,240

1.2SO 

1,280 

1,280 

1,280 

1,280

1,200 

1,180 

1,160 

1,170 

1,130

1,170 

1,170 

1,170 

1,120 

1,110

Dec.

1,110 

1,110 

1,050 

1,000 

1,030

1,060 

1,050 

1,050 

1,060 

1,070

1,070 

1,040 

1,000 

1,010 

1,050

198 

0 

0 

0 

0

402 

1,270 

1,110 

22S 

575

1,100 

1,200 

1,140 

796 

652 

649

Jan.

656 

693 

735 

742 

746

929 

961 

961 

925 

672

476 

489 

630 

765 

921

929 

925 

941 

945 

953

9S5 

1,040 

1,040 

1,020 

1,000

985 

997 

658 

449 

953 

1,290

Feb.

1,470 

1,530 

1,640 

1,570 

1,650

1,730 

1,4SO 

1,680 

1,720 

1,S90

2,000 

2,040 

2,060 

2,070 

2,120

2,190 

2,250 

2,340 

2,340 

2,220

1.S60 

1,920 

1,900 

1,91Q 

1,910

1,S70 

1,350 

1,850

Month

Oet 

Non 

Dec

C

Jar 

Fet 

Mar 

Apr 

Mas 

Jur 

Jul 

Aug 

Se]

D

alendar year

ater year 1940-4 1 . . » .

Mar.

1,660 

1,570 

1,580 

1,640 

1,480

1,490 

1,580 

1,640 

1,890 

1,SSO

1,990 

2,030 

1,300 

6S3 

721

1,170 

1,190 

1,300 

1,160 

1,500

1,950 

2,170 

2,130 

2,230 

2, ISO

2,170 

2,160 

2,140 

2,150 

2,030 

1,790

Apr.

897 

1,050 

1,310 

1,220 

1,490

1,640 

1,760 

2,090 

2,390 

2,410

2,180 

2,020 

1,940

1,810 

1,790

2,210 

1,960 

2,170 

1,910 

1,620

1,800 

1,930 

1,910 

1,810 

1,770

1,660 

1,780 

1,810 

1,910 

1,960

Secondfoot -days

24,265 

34,420 

25,080

-

26,411 

53,060 

52.554 

54,227 

56,120 

64,280 

76,090 

103,280 

119,900

689,667

May

1,860 

1,S20 

1,750 

1,300 

1,760

1,760 

1,310 

1,850 

1,360 

1,950

1,960 

l.SOO 

1,840 

1,850 

1,320

1,760 

1,760 

1,770 

1,800 

1,300

1,810 

1,760 

1,790 

1,780 

1,790

1,790 

1,800 

1,820 

1,800 

1,790 

1,810

Maximum

955 

1,230 

1,270

-

1,290 

2,340 

2,230 

2,410 

1,960 

2,600 

2,570 

4,010 

4,360

4,360

June

1,S60 

1,860 

1,870 

1.S80 

1,870

1,920 

1,960 

2,030 

1,920 

1,920

1,920 

1,960 

2,060 

2,060 

2,060

2,150 

2,240 

2,180 

2,200 

2,290

2,200 

2,210 

2,290 

2,380 

2,430

2,540 

2,600 

2,470 

2,470 

2,480

July

2,490 

2,510 

2,390 

2,370 

2,370

2,410 

2,450 

2,510 

2,530 

2,500

2,480 

2,430 

2,420 

2,430 

2,480

2,530 

2,550 

2,570 

2,540 

2,550

2,570 

2,550 

2,500 

2,400 

2,240

2,450 

2,360 

2,370 

2,390 

2,370 

2,3SO

Minimum

678 

965 

0

-

449 

1,470 

683 

897 

1,750 

1,860 

2,240 

2,350 

3,300

0

Aug.

2,350 

2,370 

2,370 

2,730 

3,560

4,010 

3.S70 

3,640 

3,580 

2,570

2,480 

2,S90 

3,110 

3,120 

3,080

3,080 

3,140 

3,240 

3,310 

3,540

3,650 

3,630 

3,650 

3,650 

3,660

3,720 

3,710 

3,770 

3,950 

8,390 

3,910

Mean

733 

1,147 

809

-

852 

1,895 

1,695 

1.SO8 

1,810 

2,143 

2,455 

3,332 

3,997

1,890

Sept.

3,870 

3,870 

3,900 

3,S70 

3,SSO

3.8SO 

3,860 

3.8SO 

3,330 

S.SOO

3,800 

3,860 

3,870 

3,900 

3,920

3,S90 

3,940 

4,070 

4,100 

4,020

4,050 

4,100 

4,070 

4,070 

4,070

4,130 

4,340 

4,360 

4,330 

4,320

Run-off in 

acre-feet

48,130 

66,270 

49,750

-

52,390 

105,200 

104,200 

107,600 

111,300 

127,500 

150,900 

204,900 

237,800

1,368,000
32 COLORADO RIVER MAIN STEM 

All-American canal above Pilot Knob wasteway, Calif.

Location.- Water-stage recorder, lat. 32°45', long. 114°42', In SEi sec. 24, T. 16 S., 

H. gi E. f San Bernardlno meridian, at bridge on U. S. Highway 80, 1 mile upstream 

from Pilot Knob wasteway, 5i miles northwest of Yuma, and 19* miles downstream from 

head at Imperial Dam. Datum of gage is 148.49 feet above mean sea level, datum of 

1929, (subject to correction due to undetermined changes caused by earthquake of 

May 18, 1940).

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 2,620 second-feet Apr. 16 (gage height, 7.15 

reet); maximum gage height, 9.61 feet Aug. 10; no flow on several days.

1938-41: Maximum discharge, that of Apr. 16, 1941; maximum gage height, that of 

Aug. 10, 1941; no flow on several days since continuous operation began Sept. IS, 

1940.

Remarks.- Records good. Ftow past this station less flow past station below Pilot Knob 

wasteway Is flow wasted through Pilot Knob wasteway, except for canal losses. No 

flow through Pilot Knob wasteway during year except negligible leakage. First diversion from canal Into Yuma main canal at siphon-drop turnout occurred on Oct. 8. Entire flow through siphon-drop power plant on Yuma main canal diverted from this canal 

beginning Aug. 4.

Discharge, In second-feet, water rear October 1940 to September 1941

Day

1 

2 

3 

4 

S

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

si

22 

23 

24 

25

26

27 

26 

29

30 

31

Oct.

505 

507 

511 

515 

515

518 

524 

479 

420 

40S

413 

479 

499 

511 

507

503 

507 

811 eie

519

519 

524 

528 

552 

524

552 

659 

672 

659 

663 

66S

Nov.

694 

712 

751 

SIS 

SIS

82S

S46 

769 

787 

818

S18 

823 

890 

940 

949

980 

990 

990 

990 

990

972 

922 

918 

913 

926

922 

908 

922 

913 

890

Dec.

S77 

S77 

846 

814 

800

S32 

832 

832 

841 

S46.

864 

841 

814 

805 

836

470 

0 

0 

0 

0

127 

980 

1,060 

249

387

676 

931 

1,000 

747 

479 

428

Jan.

409 

409 

489 

471 

475

568 

66S 

694 

676 

590

313 

287 

310 

390 

616

680 

646 

663 

668 

676

703 

778 

808 

787 

760

747 

751 

729 

208 

518 

914

Feb.

1,140 

1,220 

1,320 

1,320 

1,310

1,460 

1,240 

1,340 

1,420 

1,820

1,670 

1,780 

1,740 

1,760 

1,800

1,880 

1,920 

2,010 

2,030 

2,010

1,660 

1,600 

1,880 

1,610 

1,600

1,560 

1,800 

1,500

Month

Oct 

Noi 

Dec

C

Jar 

Fet 

Hai 

Apr 

Ha, 

Jur 

Ju3 

Aug 

Sep

D

alendar year 19' 0......................

ater year 1940-4

Mar.

1,410 

1,210 

1,260 

1,380 

1,220

1,190 

1,270 

1,280 

1,480 

1,530

1,600 

1,710 

1,180 

673 

360

687 

920 

909 

910 

1,120

1,830 

1,880 

1,820 

1,920 

1,890

1,840 

1,900 

1,850 

1,880 

1,780 

1,710

Apr.

773 

739 

1,090 

967 

1,280

1,380 

1,580 

1,720 

2,160 

2,210

2,000 

1,830 

1,760 

1,570 

1,580

1,960 

1,740 

1,940 

1,760 

1,470

1,470 

1,630 

1,700 

1,670 

1,590

1,460 

1,860 

1,620 

1,650 

1,720

Secondfoot-days

16,388 

26,407 

20,081

67,080

18,302 

44,470 

43,169 

47,399 

47,380 

54,890 

66,000 

49,612 

60,440

494, 148

toy

1,600 

1,860 

1,530 

1,880 

1,530

1,810 

1,820 

1,590 

1,560 

1,650

1,680 

1,830 

1,890 

1,620 

1,670

1,490 

1,610 

1,810 

1,800 

1,480

1,810 

1,440 

1,470 

1,460 

1,460

1,470 

1,490 

1,500 

1,470 

1,470 

1,500

Maximum

672 

990 

1,060

1,060

914 

2,030 

1,920 

2,210 

1,680 

2,300 

2,220 

2,050 

2,370

2,370

June

1,540 

1,560 

1,540 

1,560 

1,580

1,860 

1,700 

1,800 

1,620 

1,630

1,610 

1,630 

1,770 

1,780 

1,760

1,770 

1,880 

1,810 

1,820 

1,920

1,880 

1,910 

1,970 

2,040 

2,080

2,190 

2,300 

2,150 

2,110 

2,160

July

2,160 

2,180 

2,100 

2,100 

2,090

2,110 

2,110 

2,180 

2,180 

2,160

2,160 

2,140 

2,100 

2,120 

2,140

2,190 

2,200 

2,210 

2,210 

2,220

2,220 

2,200 

2,170 

2,100 

1,980

2,110 

2,030 

2,030 

2,060 

2,080 

2,080

Minimum

408 

694 

0

0

208 

1,140 

36.0 

739 

1,440 

1,640 

1,980 

646 

1,830

0

Aug.

2,040 

2,080 

2,020 

2,000 

1,960

2,080 

1,960 

1,790 

1,760 

646

782 

944 

1,180 

1,120 

1,080

1,110 

1,210 

1,260 

1,380 

1,600

1,720 

1,710 

1,760 

1,760 

1,760

1,770 

1,770 

1,790 

1,930 

1,890 

1,890

Mean

828 

880

647

183

690 

1,688 

1,393 

 1,880 

1,827 

1,820 

2,129 

1,600 

2,018

1,364

Sept.

1,900 

1,880 

1,980 

1,900 

1,900

1,900 

1,900 

1,890 

1,880 

IS 860

1,850 

1,890 

1,930 

1,930 

1,920

1,910 

1,920 

2,020 

2,100 

2,070

2,100 

2,080 

2,060 

2,080 

2,080

2,140 

2,340 

2,360 

2,370 

2,370

Run-off In 

acre-feet

32,460 

82,380

39,770

133,000

36,300 

88,200 

85,620 

94,010 

93,920 

108,300 

130,900 

98,400 

119,900

980,200
COLORADO RIVER MAIN STEM 33

All-American canal below Pilot Knob wasteway, Calif.

Location.- Water-stage recorder, lat. 32°43', long. 114°44', In SWi eec. 35, T. 16 S.,

 R. 2T"E., San Bernandlno meridian, 1.6 miles downstream from Pilot Knob wasteway, 6* 

miles west of Yuma, and 22 miles downstream from head at Imperial Dam. Datura of gage 

Is 147.70 feet above mean sea level, datum of 1929 (subject to correction due to 

undetermined changes caused by earthquake of May 18, 1940).

Records available.- April 1939 to September 1941 (discharge measurements only after 

Feoruary 1941).

Extremes.- Maximum discharge during period October 1940 to February 1941, 1,990 secondFeb. 20 (gage height, 6.84 feet); minimum, 1 second-foot Dec. 21 (gage height,

1941: Maximum discharge, that of Feb. 20, 1941; no flow during 

most of 1939 and 1940. 

Remarks.- Records excellent. Water passing this station Is available for irrigation in

 Imperial Valley except for canal losses.

Discharge, In second-feet, water year October 1940 tc September 1941

Day

1 

S 

S

4 

5

6 

7 

S 

9 

10

11 

IS 

13 

14 

15

16

17 

18 

19 

SO

81

ss

S3 

24 

SS

26 

27 

28 

29

SO

31

Oct.

474 

481 

48S 

496 

498

506 

509 

474 

416 

401

401 

461 

451 

495 

468

47S 

478 

476 

478 

481

485 

488 

492 

492 

485

512 

614 

633 

641 

648 

648

Nov.

680 

700 

732

608 

612

S24 

840 

768 

788 

816

616 

628 

S96 

946 

960

976 

996 

996 

996 

992

974 

936 

932 

916 

924

936 

928 

936 

920 

696

Dec.

884 

696 

868 

832 

616

644 

648 

844 

644 

656

656 

644 

628 

812 

640

637

14 

10 

8 

4

136 

764 

1,060 

270 

333

607 

668 

960 

736 

469 

412

Jan.

400 

397 

460 

473 

476

654 

672 

696 

688 

604

311 

260 

297 

379 

604

649 

645 

663 

653 

657

676 

756 

732 

766 

732

724 

736 

696 

202 

469 

884

Feb.

1,090 

1,160 

1,290 

1,300 

1,280

1,430 

1,210 

1,300 

1,360 

1,480

1,620 

1,710 

1,710 

1,720 

1,770

1,830 

1,860 

1,950 

1,960 

1,970

1,660 

1,590 

1,680 

1,600 

1,600

1,680 

1,530 

1,500

Month

Oct 

Nc\

Dec

C

Jar 

Pet 

Har 

Apr 

Ka, 

Jur 

Ju3 

Aug 

8ep

T

alendar year 194 0... ...................

10 perio

Mar.

tl,240

t707 

t370

tl,S20

Apr.

tl,610 

tl,640

Seeondf cot -days

15,602 

26,472 

19,890

65,648

17,691 

43,700

-

Hay

tl,570 

tl,610

Maximum

646 

996 

1,060

1,060

884 

1,970

-

June

tl,560 

tl,840

July

t2,100 

t2,200

Minimum

401 

680 

4

0

202 

1,090

-

Aug.

t2,030 

t396 

tl,650

Mean

603

882 

642

179

577 

1,561

-

Sept.

tl,940 

tl,920

Run- off In 

acre-feet

30,950 

52,510 

39,450

130,000

35,490 

66,680

245.100

t Result of discharge measurement.
34 COLORADO RIVER MAIN STEM 

Yuma main canal at siphon-drop power plant, near Yuma, Arlz.

Location.- Two gages consisting of staff gage on forebay and water-stage recorder on 

 taiirace at power plant, lat. 32°46 1 30W , long. 114°38'00", In SEiSEi sec. 10, T. 16 

S., R. 22 ET., San Bernardlno meridian, 500 feet downstream from turnout In All-American 

canal to Yuma main canal, 3$ miles north of Yuma, 10$ miles downstream from head of 

Yuma main canal at Laguna Dam, and 14$ miles downstream from head of All-Amerlcan 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 correction due to undetermined 

changes caused by earthquake of. 'May 18, 1940).

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 1,900 second-feet Aug. 31, Sept. 13, 14; minlmum, 490 second-feet Aug. 4. «

1938-41: Maximum discharge, that of Aug. 31, Sept. 13, 14, 1941; no flow Sept. 

5-11, 1939.

Remarks.- Records excellent Oct. 1 to Aug. 17 and good thereafter. Daily discharge dete mined from flow through turbines, computed from relation between discharge, head, 

and gate openings, to which is added small discharge bypassed around power plant 

through waste gates. Bypassed discharge computed on basis of gage readings at forebay, and record of gate openings, by orifice formula. Rating of turbines checked by 

current-meter measurements. Records show quantity of water available for Irrigation 

on Valley division of Yuma project and that available for spill through Yuma main 

canal wasteway 3 miles downstream. The All-Amerlcan canal first diverted water to 

the Yuma main canal above the power plant on Oct. 8 and furnished all the water at 

this point after Aug. 4.

Cooperation.- Record of gage heights at forebay and of turbine gate openings furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

2723

29 

30 

31

Oct.

1,530 

1,570 

1,590 

1,600 

1,370

1,600 

1,530 

1,630 

1,710 

1,710

1,720 

1,730 

1,730 

1,690 

1,6SO

1,6SO 

1,630 

1,700 

1,730 

1,730

1,690 

1,690 

1,690 

1,690 

1,700

1,720 

1,730 

1,700 

1,720 

1,710 

1,710

Nov.

1,710 

1,730 

1,730 

1,700 

1,710

1,720 

1,730 

1,720 

1,730 

1,740

1,730 

1,720 

1,730 

1,740 

1,750

1,750 

1,750 

1,740 

1,730 

1,740

1,760 

1,750 

1,750 

1,750 

1,720

1,740 

1,730 

1,750 

1,730 

1,740

Dec.

1,750 

1,720 

1,720 

1,710 

1,720

1,740 

1,750 

1,760 

1,740 

1,740

1,730 

1,740 

1,750 

1,750 

1,760

1,600 

1,590 

1,590 

1,600 

1,600

1,390 

1,600 

1,690 

1,730 

1,730

1,740 

1,750 

1,750 

1,750 

1,740 

1,720

Jan.

1,750 

1,750 

1,760 

1,760 

1,760

1,730 

1,760 

1,SOO 

1,770 

1,660

1,710 

1,780 

1,770 

1,720 

1,310

1,320 

1,800 

1,810 

1,820 

1,730

1,770 

1,770 

1,770 

1,770 

1,780

1,780 

1,740 

1,750 

1,710 

1,750 

1,780

Fet.

1.790 

1,300 

1,730 

1,740 

1,740

1,740 

1,740 

1,760 

1,770 

1,730

1,760 

1,750 

1,770 

1,780 

1,790

l.SOO 

1,740 

1,730 

1,780 

1,790

1,460 

1,760 

1,780 

1,740 

1,730

1,750 

1,770 

1,740

Month

Oct 

Non 

Dec

C

Jar 

Fet 

Mat 

Api 

Maj 

Jur 

Jul

AU£

Sej

H

ua

-ust. ...................................

ater year 1940-4 1....... . ...... ..

liar.

1.740 

1,760 

1,730 

1,750 

1,740

1,750 

1,760 

1,760 

1,770 

1,710

1,720 

1,740 

1,760 

1,640 

1,750

1,760 

1,750 

1,750 

1,750 

1,750

1,760 

1,780 

1,770 

1,740 

1,730

1,750 

1,780 

1,770 

1,760 

1,780 

1,730

Apr.

1,720 

1,700 

1,730 

1,740 

1,770

1,730 

1,740 

1,730 

1,730 

1,750

1,790 

1,800 

1,800 

1,730 

1,710

1,760 

1,7SO 

1,730 

1,7SO 

1,780

1,730 

1,730 

1,740 

1,750 

1,760

1,770 

1,730 

1,710 

1,690 

1,640

Secondfoot-days

51,710 

52,020 

52,650

601,710

54, 690 

49,010 

54,190 

52,400 

53,940 

51,970 

54,090 

55,149 

55,870

637, 689

May

1,730 

1,770 

1,580 

1,790 

1,730

1,720 

1,740 

1,760 

1,750 

1,760

1,790 

1,710 

1,710 

1,750 

1,760

1,770 

1,760 

1,770 

1,710 

1,710

1,750 

1,760 

1,760 

1,770 

1,770

1,700 

1,680 

1,730 

1,750 

1,750 

1,750

Maximum

1,730 

1,760 

1,760

1,760

1,820 

1,800 

1,780 

1,800 

1,790 

1,780 

1,790 

1,900 

1,900

1,900

June

1,770 

1,710 

1,700 

1,730 

1,710

1,730 

1,770 

1,780 

1,700 

1,700

1,730 

1,740 

1,770 

1,770 

1,780

1,710 

1,700 

1,720 

1,720 

1,760

1,590 

1,780 

1,710 

1,580 

1,710

1,750 

1,770 

1,730 

1,7SO 

1,720

July

1,730 

1,760 

1,760 

1»-770 

1,780

1,770 

1,700 

1,680 

1,710 

1,750

1,770 

1,770 

1,730 

1,710 

1,690

1,710 

1,730 

1,740 

1,790 

1,780

1,710 

1,710 

1,730 

1,760 

1,780

1,790 

1,790 

1,720 

1,730 

1,740 

1,750

Minimum

1,370 

1,700 

1,390

1,340

1,660 

1,460 

1,640 

1,640 

1,580 

1,590 

1,680 

879 

1,820

879

Aug.

1,790 

1,790 

1,730 

679 

1,330

1,720 

1,790 

1,800 

1,820 

1,840

1,760 

1,760 

1,770 

1,S70 

1,860

1,850 

1,S60 

1,830 

1,840 

1,840

1,850 

1,340 

1,860 

1,860 

1,800

1,340 

1,830 

1,830 

1.S80 

1,880 

1,900

Mean

1,668 

1,734 

1,698

1,644

1,764 

1,750 

1,748 

1,747 

1,740 

1,732 

1,745 

1,779 

1,862

1,747

Sept.

1,850 

1,840 

1,S40 

1,850 

1,860

1,390 

1,890 

1,860 

1,840 

1,880

1,880 

1,890 

1,900 

1,900 

1,870

1,850 

1,S50 

1,360 

1,S60 

1,870

1,890 

1,860 

1,860 

1,850 

1,860

1,860 

1,870 

1,860 

1,820 

1,320

Run-off In 

acre-feet

102,600 

103,200 

104,400

1,193,000

108,500 

97,210 

107,500 

103,900 

107,000 

103,100 

107,300 

109,400 

110,800

1,265,000
COLORADO RIVER MAIN STEM 35

Yuma main canal below Colorado River siphon, at Yuma, Arlz.

Location.- Two gages determine head on Colorado River siphon. At intake, water-stage 

 recorder, lat. 32°43'45", long. 114°37'15", in SWiSEi sec. 26, T. 16 S., R. 22 E., 

San Bernardino meridian, on California side of river, 500 feet downstream from Yuma 

main canal wasteway and 3 miles downstream from siphon drop power plant. At outlet, 

water-stage recorder in NWiNEi sec. 35, T. 16 S., R. 22 E., San Bernardino meridian, 

on Arizona side of river. Both gages are a quarter of a mile downstream from highway 

bridge over Colorado River at Yuma. Datum of each gage is 100.00 feet (Yuma project 

datum) or 100.54 feet (datum of 1929) above mean sea level (subject to correction due 

to undetermined changes caused by earthquake of May 18, 1940.

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 718 second-feet June 10 (head, 1.55 feet); no 

flow Hay 3.

193S-41 (regulated): Maximum discharge, 784 second-feet Apr. 11, 1939 (head, 1.65 

feet); no flow during ehort periods in each year.

Remarks.- Records excellent. Daily discharge computed from relation between discharge 

and head on siphon, which is the difference between readings of stages at intake and 

outlet gages. Records show quantity of water delivered immediately below Yuma main 

canal wasteway to Valley division of Yuma project for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

28 

23 

24 

25

86 

87 

28 

29 

30 

31

Oct.

697 

701 

691 

633 

523

454 

627 

627 

603 

620

614 

544 

486 

654 

691

675 

654 

606 

557 

490

656 

701 

693 

693 

667

592 

517 

649 

667 

647 

665

Nov.

665 

601 

579 

653 

680

666 

640 

624 

570 

504

579 

654 

64S 

612 

546

497 

493 

620 

603 

536

472 

497 

476 

454 

600

617 

594 

547 

524 

464

Dec.

423 

586 

5SS 

570 

557

531 

470 

415 

557 

567

534 

451 

411 

391 

333

536 

524 

445 

375 

371

360 

367 

521 

464 

395

395 

391 

363 

333 

466 

404

Jan.

342 

338 

342 

342 

334

391 

407 

403 

397 

342

311 

315 

346 

346 

342

346 

338 

319 

315 

390

407 

431 

419 

389 

359

334 

4S2 

469 

419 

403 

399

Feb.

358 

346. 

495 

537 

579

585 

557 

467 

407 

591

626 

600 

553 

500 

462

399 

573 

614 

532 

582

547 

427 

333 

538 

551

535 

382 

363

Month

Oct 

NOT 

Dec

C

Jar 

Pet 

Mar 

Api 

Maj 

Jur 

Ju]

AU£

Sei

11

alendar year 1940... ...................

ater year 1940-4

Mar.

338 

334 

432 

462 

403

403 

391 

367 

363 

534

567 

555 

4S3 

340 

159

107 

207 

260 

276 

289

271 

301 

236 

495 

567

579 

613 

585 

484 

391 

531

Apr.

479 

454 

323 

260 

242

216 

4S5 

550 

541 

511

363 

271 

209 

460 

476

423 

387 

306 

254 

202

506 

534 

500 

466 

337

210 

170 

511 

551 

517

Secondfoot-days

19,294 

17,220 

14,154

204,169

11,517 

14,144 

12,363 

11,714 

12,643 

15,611 

16,369 

14,232 

16,932

176,443

May

450 

393 

255 

216 

408

442 

424 

367 

325 

264

170 

501 

567 

554 

479

399 

286 

195 

528 

588

4S9 

431 

351 

246 

195

601 

632 

574 

436 

465 

362

Maximum

701 

630 

538

728

482 

626 

613 

551 

632 

693 

671 

603 

678

701

June

301 

635 

651 

632 

579

493 

352 

306 

660 

69S

639 

557 

474 

315 

259

595 

667 

644 

618 

556

443 

383 

611 

637 

616

588 

503 

407 

391 

602

July

621 

591 

578 

461 

435

395 

591 

626 

632 

686

632 

547 

412 

646 

671

640 

603 

549 

411 

346

579 

600 

540 

440 

402

331 

380 

586 

564 

531 

527

Minimum

454 

454 

338

2

311 

346 

107 

170 

170 

259 

320 

286 

346

107

Aug.

456 

365 

315 

48S 

535

531 

476 

465 

356 

319

537 

579 

588 

581 

442

358 

286 

456 

465 

435

436 

454 

393 

342 

538

603 

594 

570 

564 

442 

371

Mean

622 

574 

457

559

372 

505 

399 

390 

408 

527 

523 

461 

564

433

Sept.

460 

511 

517 

541 

507

414 

346 

647 

651 

618

579 

486 

435 

375 

585

637 

637 

637 

667 

606

504 

633 

673 

669 

646

609 

565 

476 

649 

653

Run-off In 

acre-feet

38,270 

34,160 

23,070

405,000

28,840 

28,050 

24,520 

23,830 

85,080 

31,360 

38,470 

23,330 

33,580

350,000
36 COLORADO RIVER MAIN STEM

Yuma main canal wasteway at Yuma, Arlz.

Location.- Water-stage recorders on Yuma main canal determining flow to wasteway at gates,

 IaTT38044'00", long. 114°37'15", In SWiSEi sec. 26, T. 16 S., R. 22 E., San Bemardlno 

meridian, 500 feet upstream from Intake of Colorado River siphon on Yuma main canal, 

half a mile north of Yuma, and 3 miles downstream from siphon drop power plant.

Records available.- April 1913 to September 1941 (prior to October 1930, yearly discharge

 only, In Mater-Supply Paper 879; 1930-38, published as separate table with re&ords for 

Colorado River at Yuma, Arlz.).

Extremes.- Maximum dally discharge during year, 1,650 second-feet Mar. 16; minimum dally, 

39J. second-feet Aug. 4. 1930-41: Maximum dally discharge, 1,900 second-feet Feb. 21, 1932; no flow several 

days In 1937, 1938, and 1939.

Remarks.- Records good. Discharge computed as difference between discharge of Yuma main

 canal at siphon drop power plant and that of same canal below Colorado River siphon, 

with deduction for small Irrigation diversion from canal between those stations. All 

flow In Yuma main canal wasteway is returned to Colorado River half a mile downstream 

from station on Colorado River at Yuma, and all flow bypasses that station.

Cooperation.- Record of diversions for Irrigation from Yuma Main canal furnished by Bureau 

or Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

IS 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

86 

27 

28 

89 

SO 

SI

Oct.

823 

S66 

899 

967 

847

1,160 

947 

996 

1,110 

1,090

1,110 

1,190 

1,840 

1,030 

988

1,000 

1,030 

1,090 

1,170 

1,240

1,030 

984 

997 

997 

1,030

1,130 

1,210 

1,060 

1,060 

1,060 

1,040

NOT.

1.C40 

1,130 

1,150 

1,040 

1,020

1,040 

l.OSO 

1,100 

1,160 

1,240

1,150 

1,060 

1,080 

1,130 

1,200

1,250 

1,260 

1,120 

1,130 

1,200

1,290 

1,250 

1,270 

1,300 

1,120

1,120 

1,1*) 

1,200 

1,210 

1,280

Dec.

1,330 

1,130 

1,120 

1,130 

1,160

1.-210 

1,280 

1,340 

1,180 

1,170

1,200 

1,290 

1,340 

1,360 

1,380

1,060 

1,070 

1,140 

1,220 

1,230

1,030 

1,230 

1,170 

1,270 

1,340

1,340 

1,360 

Ir380 

1,410 

1,270 

1,320

Jan.

1,410 

1,410 

1,420 

1,420 

1,430

1,340 

1,350 

1,400 

1,370 

1,310

1,400 

1,460 

1,420 

1,370 

1,470

1,470 

1,460 

1,490 

1,500 

1,390

1,360 

1,340 

1,350 

1,380 

1,420

1,450 

1,250 

1,280 

1,290 

1,350 

1,380

Feb.

1,430 

1,450 

1,280 

1,200 

1,160

1,160 

1,180 

1,290 

1,360 

1,140

1,130 

1,160 

1,220 

1,280 

1,530

1,400 

1,150 

1,110 

1,800 

1,210

913 

1,330 

1,400 

1,200 

1,180

1,280 

1,390 

1,380

Month

Oet 

Hoi

Dec

C

Jar 

Pel 

Hai 

Api 

Ma; 

Juc 

Ju] 

Aus 

Set

«

alendar year 19' 0......................

rater year 1940-4

Mar.

1,400 

1,430 

1,250 

1,290 

1,340

1,350 

1,370 

1,390 

1,410 

1,170

1,140 

1,180 

1,280 

1,300 

1,590

1,650 

1,540 

1,490 

1,470 

1,520

1,490 

1,480 

1,480 

1,240 

1,150

1,170 

1,170 

1,180 

1,280 

1,390 

1,190

Apr.

1,240 

1,240 

1,400 

1,4SO 

1,530

1,660 

1,250 

1,170 

1,180 

1,240

1,430 

1,650 

1,590 

1,260 

1,830

1,340 

1,390 

1,470 

1,650 

1,680

1,220 

1.190 

1,240 

1,280 

1,440

1,550 

1,610 

1,190 

1,130 

1,120

Secondfoot-days

32,360 

34, 760 

38,460

396, 595

43, 140 

54,835 

41,780 

40,610 

41,240 

36,070 

37,600 

40,806 

38, 760

460,419

May

1,880 

1,380 

1,320 

1,670 

1,320

1,280 

1,320 

1,390 

1,420 

1,500

1,620 

1,200 

1,130 

1,200 

1,280

1,370 

1,470 

1,580 

1,180 

1,110

1,260 

1,530 

1,410 

1,520 

1,580

1,100 

1,040 

1,160 

1,260 

1,880 

1,390

Maximum

1,240 

1,300 

1,410

1,700

1,600 

1,450 

1,650 

1,610 

1,620 

1,520 

1,470 

1,570 

1,540

1,650

June

1,470 

1,070 

1,040 

1,090 

1,130

1,240 

1,420 

1,470 

1,030 

1,000

1,090 

1>180 

1,300 

1,460 

1,520

1,110 

1,020 

1,080 

1,110 

1,200

1,140 

1,400 

1,090 

1,030 

1,080

1,160 

1,270 

1,370 

1,390 

1,110

July

1,100 

1,160 

1,180 

1,310 

1,340

1,380

1,100 

1,040 

1,070 

1,120

1,140 

1,220 

1,370 

1,050 

1,010

1,060 

1,120 

1,190 

1,380 

1,430

1,120 

1,100 

1,190 

1,320 

1,380

1,460 

1,470 

1,190 

1,170 

1,210 

1,220

Minimum

823 

1,020 

1,030

823

1,250 

913 

1,140 

1,120 

1,040 

1,000 

1,010 

391 

1,160

391

Aug.

1,330 

1,420 

1,460 

391 

795

1,190 

1,310 

1,340 

1,460

1,520

1,220 

1,170 

1,170 

1,340 

1,420

1,490 

, 1,670 

1,370 

1,380 

1,400

1,410 

1,390 

1,470 

1,520 

1,250

1,230 

1,240 

1,260 

1,320 

1,440 

1,630

Mean

1,044 

1,159 

1,241

1,084

1,392 

1,244 

1,348 

1,354 

1,330 

1,202 

1,213 

1,316 

1,892

1,861

Sept.

1,380 

1,320 

1,310 

1,2(00 

1,340

1,480 

1,540 

1,210 

1,180 

1,870

1,300 

1,400 

1,460 

1,520 

1,280

1,200 

1,210 

1,220 

1,190 

1,260

1,390 

1,220 

1,160 

1,170 

1,200

1,250 

1,300 

1,580 

1,160 

1,160

Run-off In 

acre-feet

64,190 

68,950 

76,280

786,600

85,570 

69,090 

82,870 

80,650 

81,800 

71,640 

74,580 

80,940 

76,880

913,800
TRIBUTARIES ABOVE GREEN RIVER 37

Arapaho Creek below Monarch Lake, Colo.

Location.- Water-stage recorder, lat. 40°08" (revised), long. 105°46', in SEi sec. 15, 

mm., R. 75 W., 700 feet downstream from Roaring Fork, 2i miles downstream from 

outlet of Monarch Lake, and 10 miles east of Granby. Datum of gage Is 8,244.30 feet 

above mean sea level, datum of 1929.

Drainage area.- 59 square miles.

Records available.- June 1935 to September 1941.

Extremes.- Maximum discharge during year, 726 second-feet June 19 (gage height, 2.89 

reetj; minimum, 3.5 second-feet Jan. 14, probably less during winter.

1934-41: Maximum discharge, 1,380 second-feet June 22, 1938 (gage height, 4.31 

feet), from rating curve extended above 900 second-feet; minimum 2.5 second-feet 

Jan. 13, 1940.

Remarks.- Records good except those for period of Ice effect, which are fair. Flow partly 

regulated by Monarch Lake. Small diversions for Irrigation above station. Several 

second-feet diverted around etatlon by power canal during summer months.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

5

6 

7

s

9 

10

11 

12

13 

14ie

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

90 

31

Oct.

61 

69 

61 

69 

64

52

51 

51 

51 

50

48 

44 

3S 

35 

32

30 

28 

26 

25 

24

23 

22 

22 

21 

20

19 

19 

19 

19 

19 

19

HOY.

19 

19 

19 

18 

19

18 

18 

IS

IS 

18

16 

14 

11 

10 

10

11 

13 

13 

12 

12

11 

11 

10 

10 

10

10 

10 

10 

10 

11

Dec.

S.5

Jan.

(») 

 6.0

Feb.

(*) 

> 6.5

Month

Oot 

Hoi

Dec

C

Jax 

Pel 

Max

*P*

£ 

Ju] 

Aug

Set

t ater year 1940-4 i

Mar.

> 6.5 

(»)

Apr.

S.O 

8.0 

7.S 

7.6 

7.S

S.O 

S.O 

8.0 

8.2

8.4

8.8 

9.2 

9.4 

9.2

9.4

10 

11 

10

11 

11

11 

1011

12 

15

17 

18 

*86 

37 

44

Secondfoot-days

1,101 

409 

263.5

29,668.5

1S6 

164 

201.5 

378.8 

10,085 

12,782 

3,945 

1,471 

848

31,824.8

May

50 

6S 

IDS 

134 

130

108 

87 

68 

81 

154

269 

357 

636 

642 

594

424 

369 

458 

380 

321

310 

396 

376 

432 

510

550 

528 

441 

404 

392 

40S

Maximum

61 

19

638

44 

642 

712 

235 

61 

40

712

June

420 

400 

400 

420 

420

392 

361 

373 

357 

346

342 

357 

342 

332 

32S

392 

510 

629 

712

677

616 

585 

636 

479 

420

416 

361 

324 

279 

256

July

235 

208 

188 

198 

201

194 

188 

188 

191 

184

177 

164 

108 

71 

S7

96 

102 

102 

96 

96

99 

99 

90

84 

78

84 

84 

73

68 

56 

56

Minimum

19 

10

_

7.6 

60 

256 

66 

30 

19

-

Aug.

52 

51 

48 

45

46

46 

44

61 

61 

61

54 

52

50 

52

51

52 

56 

66 

56 

54

61 

48 

44 

44 

40

38 

37 

36 

34

31 

30

Mean

35.5 

13.6 

8.5

81.1

6.0 

5.6 

6.5 

12.6 

325 

426 

127 

47.5 

28.3

87.2

Sept.

28 

27 

26 

24 

22

19 

19 

19 

19. 

21

23 

25 

28 

32 

37

40 

40 

38 

36 

34

31 

27 

26 

27 

29

30 

30 

31 

30 

30

Run-off In 

acre-feet

2,180 

811 

523

58,830

369 

305 

400 

751 

20,000 

26,350 

7,820 

2,920 

1,680

63,110

» Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 11 to Apr.
38 TRIBUTARIES ABOVE GREEN RIVER

Willow Creek near Granby, Colo.

Location.- Water-stage recorder, lat. 40°11', long. 106°00', in NWi sec. 34, T. 3 N., R. 

77 W., 100 feet downstream from Gold Run Creek and 7 miles northwest of Granby. Datum 

of gage is 8,E40.99 feet above mean sea level, datum of 1929.

Drainage area.- 105 square miles.

Records available.- April J.935 to September 1941.

Extrenes.- Maximum discharge during year, 680 second-feet May 13 (gage height, 4.08 

reet), fron rating curve extended above 530 second-feet; minimum daily, 6.0 secondfeet Dec. 15, 16, E7.

1935-41: Maximum discharge, 811 second-feet May 16, 1938 (gage height, 4.49 feet), 

from rating curve extended above 530 second-feet; minimum not determined, occurred 

during period of ice effect.

Remarks.- Records good except those for periods of ice effect and those for June, which 

are fair. Water diverted above station for irrigation of hay meadows.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

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 

17 

15 

14

18 

15 

14 

15 

15

14 

15 

13 

*13 

12

14 

15 

15 

15 

15

14 

14 

14 

12 1'2

12 

12 

13 

12 

12 

12

Nov.

12 

11 

12 

13 

12

*13 

13 

12 

13 

12

11 

10 

9.5 

8.0 

9.0

10 

11 

11 

10 

9.6

9.8 

9.6 

9.2 

9.0 

8.5

8.2 

8.0 

8.0 

8.2 

8.2

Dec.

8.0 

8.2 

8.0 

8.0 

7.8

7.6 

7.6 

7.6 

7.6 

7.8

7.0 

6.7 

6.4 

6.0

6.0 

6.2 

7.0 

7.2 

7.0

6.4 

6.6 

7.2 

7.2 

7.0

6.8 

6.0 

6.4 

7.0 

7.4 

7.6

Jan.

7.6 

7.4 

7.0 

6.6 

6.2

6.2 

6.4 

6.6 

7.0 

7.2

7.2 

7.0 

*6.9 

6.9

7.0 

6.8 

6.6 

6.6 

6.8

7.0 

7.0 

7.1 

7.4 

7.0

7.0 

6.4 

6.4 

6.2 

6.2 

6.5

Feb.

6.6

6.6 

6.8 

6.8 

6.8

6.8 

7.0 

7.2 

7.4 

7.4

7.0 

7.0 

7.2 

7.4

7.2 

7.5 

7.8 

«8.0 

8.0

8.2 

S.2 

8.4 

8.4 

8.5

8.4 

8.0 

7.5

Month

Oot 

Ho\ 

Dec

C

Jar 

Pel 

Mai 

Apr 

Ha; 

Jur 

Ju] 

Aug 

Set

11 ater year 1940-^

Mar.

7.8 

7.8 

7.8 

7.6 

7.6

7.8 

8.0 

8.2 

8.0 

7.5

7.7 

8.0 

8.2 

8.5

8.8 

8.8 

9.0 

10 

11

12 

12 

12 

12 

13

14 

*14 

13 

13 

13 

14

Apr.

16 

16 

15 

16 

15

16 

16 

15 

15 

16

17 

22 

24 

22 

22

31 

26 

22 

23 

20

20 

21 

«26 

29 

27

33 

40 

46 

54 

76

Secondfoot-days

438 

308.8 

220.9

15,188.3

211.6 

209.3 

307.6 

756 

9,762 

4,339 

1,254 

552 

440

18,799.2

May

96 

120 

149 

174 

142

124 

109 

144 

226 

327

412 

492 

599 

638 

560

464 

442 

447 

422 

380

353 

351 

344 

336 

322

312 

298 

272 

255 

231 

221

jiteTrlimiltt

18 

13 

8.2

298

7.6 

8.5 

14 

76 

638 

216 

72 

30 

20

638

June

216 

200 

191 

184 

180

168 

168 

ISO 

156 

153

142 

157 

136 

128 

128

139 

151 

151 

153 

151

144 

142 

132 

129 

121

112 

100 

90 

82 

75

July

72 

71 

64 

60 

59

56 

55 

52 

48 

46

43 

43 

43 

50 

43

39 

35 

34 

33 

35

32 

29 

26 

25 

24

31 

25 

22 

20 

20 

19

Minimum

12 

8.0 

6.0

6.0

6.2 

6.6 

7.5 

15 

96 

75 

19 

13 

13

6.0

Aug.

18 

17 

16 

15 

15

18 

19 

18 

17 

18

24

30 

24 

18 

17

18 

20 

26 

19 

17

16 

17 

17 

16 

16

17 

15 

14 

13 

14 

13

Mean

14.1 

10.3 

7.13

41.5

6.83 

7.48 

9.92 

25.2 

315 

145 

40.5 

17.8 

14.7

51.5

Sept.

13 

13 

13 

13 

13

13 

13 

20 

18 

19

19 

17 

16 

20 

17

15 

14 

14 

13 

13

13 

13 

14 

14 

14

14 

13 

13 

13 

13

Run- off In 

acre-feet

869 

612 

438

30,130

420 

415 

610 

1,500 

19,360 

8,610 

2,490 

1,090 

873

37,290

* Winter discharge measurement made on this day.

Mote.- Stage-discharge relation affected by Ice HOT. 5 to Mar. 30, Apr. 1-3.
TRIBUTARIES ABOVE GREEN RIVER

Fraser River near Winter Park, Colo.

Location.- Water-stage recorder, lat. 39°54'00", long. 105046'35B , In NEi sec. 4, T. 2 

8., R. 75 w., If miles northwest of winter Park and 2i miles downstream from point 

of diversion for Moffat tunnel.

Drainage area.- 27.6 square miles.

Records available.- September 1910 to September 1930 and September 1933 to September 1941 

In reports of Geological Survey. September 1910 to September 1941 In reports of 

State engineer. Records since June 9, 1936, equivalent to earlier records If flow 

through Pioneer bore of Moffat tunnel is added to flow past station.

Average discharge.- 31 years, 43.1 second-feet (Including diversion through Moffat 

tunnel).

Extremes.- Maximum discharge during year, 64 second-feet Oct. 16 (gage height, 0.85 

root); minimum dally, 3.4 second-feet Sept. 1-7. Fraser River and diversion to 

Moffat tunnel combined: maximum 274 second-feet June 18, minimum daily, 6.2 secondfeet Jan. 28.

1910-41: 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, which are fair. Small 

diversion through Berthoud Pass. Considerable portion of flow above station 

diverted to Moffat tunnel.

Cooperation.- Records of diverted flow through Pioneer bore of Moffat tunnel furnished 

By State engineer.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

SI

22

23

24

SB

26

27

28

29

30

31

Oct.

6.2

5.6

5.2

5.2

5.9

6.5

5.9

5.6

5.6

5.6

5.2

5.2

5.2

5.2

6.S

32

22

19

IS

17

16

16

16

16

16

15

16

15

14

14

14

HOT.

13

15

13

13

10

8.5

14

*14

13

12

10

S.5

7.5

S.O

9.0

11

12

12

12

11

11

10

S.5

11

10

9.9

9.0

9.9

9.9

10

-

Dao.

10

9.9

9.5

9.0

9.0

9.2

9.5

9.5

9.5

9.1

8.6

S.O

9.1

7.5

S.O

7.0

8.0

S.6

7.5

8.2

7.2

S.O

9.0

9.1

9.1

9.1

S.5

8.S

9.5

9.1

9.1

Month

Calendar year 1940

January. .............

March. ...............

April................

May. .................

June .................

July. ................

Water year 1940-41

Jan.

9.

S.

7.

6.

7.

7.

7.

S.

7.

7.

7.

7.

*6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

6.

7.

6.

6.

6.

7.

7.

Seoondfoot-daytj

360.9

325.7

271.2

3,554.6

217.4

195.1

277.0

425.9

772

475

223.8

142.4

129.5

3,315.9

1

5

0

5

0

5

a

0

5

5

5

2

S

5

5

5

5

5

5

5

5

5

5

8

8

5

8

2

8

2

2

Feb.

7.

6.

6.

6.

6.

6.

6.

6.

7.

*7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

7.

6.

7.

-

-

-

Ob

Maximum

32

15

10

32

9.1

7.2

12

24

35

23

11

7.5

5.6

35

2

6

4

4

4

4

5

6

0

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

0

4

0

MarS.

S.

7.

S.

S.

8.

S.

7.

7.

7.

7.

6.

7.

7.

8.

8.

8.

9.

9.

9.

9.

10

11

*11

10

10

10

12

11

9.

11

served

Minimum

3.2

7.5

7.0

3.7

6.2

6.4

6.6

9.9

19

11

4.9

3»7

3.4

3.4

0

2

5

0

6

2

6

0

8

0

5

6

0

S

6

0

4

0

5

9

9

9

Apr.

12

11

10

9.9

11

11

10

10

11

12

13

17

16

13

12

13

14

12

12

12

12

13

14

15

17

21

23

24

23

22

May

24

2S

27

22

22

19

19

22

26

30

30

33

35

32

29

29

29

26

25

22

22

22

22

22

22

23

22

22

22

22

22

Mean

11.6

10,9

8.75

9.71

7.01

6.97

S.94

14.2

24.9

15. S

7.22

4.59

4.32

10.5

Run-off 

(acre-, 

feet)

716

646

538

7,050

431

387

549

845

1,530

942

444

282

257

7,570

June

21

20

19

19

20

19

20

19

19

23

20

19

IS

16

15

14

14

13

13

13

13

13

12

13

13

12

12

11

11

11

July

11

10

9.5

9.1

9.1

3.2

3.2

.8

.5

.5

.2

.2

7.2

6.8

6.S

6.8

6.5

6.5

6.5

6.8

7.2

7.5

6.2

5.9

6.2

6.5

6.5

5.9

5.6

5.2

4.9

Diversion 

by

Moffat 

tunnel 

(acre-feet)

473

0

0

14,960

0

0

0

0

4,250

3,910

3,670

1,340

1,010

20,150

Aug.

4.9

4.6

4.9

4.9

4.9

4.9

7.5

6.2

4.6

4.6

5.2

6.8

5.6

4.4

4.4

4.6

4.9

4.4

4.1

4.1

4.1

3.9

3.9

3.7

3.7

3.9

3.9

3.7

3.7

3.7

3.7

Sept.

3.4

3.4

3.4

3.4

3.4

3.4

3.4

4.6

5.2

5.6

4.9

4.4

4.4

4.9

4.6

4.4

4.4

4.4

4.1

4.1

4.1

4.1

4.6

4.6

4.9

4.6

4.6

4.4

4.9

4.9

Adjusted for 

Si version

Run-off 

(acre-feet)

1,190

646

538

22,010

431

387

549

5,7SO

9,350

4,110

2,120

1,270

27,720

Mean 

secondfeet)

19.3

10.9

8.75

30.3

7.01

6.97

S.94

14.2

94.1

166

66.9

34.6

21.2

38.3

* Winter discharge measurement made on this day. 

Note.- Stage discharge relation affected by ioe Hov. 5, 

1-23, 27, 23, Jan. 2-9, 23, 29; Feb. 2-9, 26-28, Mar. 1,

6, 10-17, 23, 27, Dec. 3-8, 11-17, 19, 

4, 8-13, 16-19.
40 TRIBUTARIES ABOVE GREEN 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 Tenmlle Creek, half a mile southwest of Granby and 24 miles 

upstream from mouth.

Drainage area.- 285 square miles.

Records available.- August 1904 to September 1909, September 1937 to September 1941. 

Records for August 1904 to September 1909 at site Just below Tenmlle Creek (published 

erroneously In Water-Supply Paper 617 as 2 miles downstream from Tenmlle Creek). 

Records since September 1937 equivalent to earlier records If flow through Pioneer bore 

of Moffat tunnel is added t6 flow past station.

Extremes.- Maximum discharge during year, 867 second-feet May 14 (gage height, 2.45 feet); 

minimum daily, 28 second-feet Nov. 13.

1904-9, 1933-41: Maximum dally discharge, 1,860 second-feet June 14, 15, 1906; 

probable minimum daily, 25 second-feet Sept. 22, 1939.

Remarks.- Records good except those for periods of ice effect, which are fair.

COPE oration.- Records of flow diverted through Pioneer bore of Moffat tunnel furnished by 

Date engineer.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1

2

S

4

S

6

7

8

9

10

U

18

13

14

16

ie

17

18

19

20

81

ess

88

84

SB

26

27

88

89

SO

31

Oct.

77

66

59

62

54

79

64

61

62

68

61

57

65

62

51

59

86

71

70

70

68

66

68

64

66

66

70

68

62

70

68

HOT.

55

64

64

68

44

 77

75

76

70

57

40

30

88

29

36

46

67

58

67

53

50

51

54

58

60

58

54

51

62

56

-

Dec.

59

67

56

62

52

51

49

«49

47

44

44

43

41

38

36

36

36

35

36

36

36

37

39

39

38

38

36

39

41

42

44

Month

Calendar year 1940

April................

May..................

Jtaly. ................

Water year 1940-41

Jan.

43

39

37

36

36

36

36

37

38

39

39

38

38

38

38

37

36

36

36

34

 34

34

34

35

36

36

36

35

35

34

34

Feb.

S3

!

!

!

S3

S3

S4

34

34

!

i

i

54

S6

S6

36

 35

i

!

:

S6

6

S6

36

37

:

:

4

(8

9

1

42

42

4

4

4

1

1

1

42

43

4

4

4

16

Mar.

48

'

<

4

(4

14

14

46

46

<

<

<

le

17

16

45

47

<

I

I

18

50

32

64

64

!

I

t

>4

)6

0

64

66

(

'

{

8

ro

10

85

£

(

!

 13

ie

»

1

(8

1

1

139

Apr.

170

1

1

1

54

34

18

148

146

1

1

1

(0

57

57

137

137

1

1

1

70

30

54

14S

140

1

1

1

10

29

29

129

129

1

1

1

58

12

28

132

146

1

21

3

2

33

56

JO

92

May

29S

306

361

376

29S

276

228

884

300

370

463

583

681

770

694

662

596

632

666

501

486

517

606

68!

634

550

550

49G

523

479

463

Observed

Secondfoot -daya

2,009

1,624

1,324

35,040

1,126

1,064

2,036

4,792

14,624

11,828

8 fOiV R1 O

1 877 1)403

46 ,522

Maximum

79

77

69

436

43

46

161

300

770

634

203

Q* DO

64

770

MlnliBUm

51

26

35

27

34

33

44

126

224<

nf\f\ AVA)

44

41

36

28

Mean

64. S

54.1

42.7

96.7

36.3

37.6

65.7

160

472

394

90.9

60.6

46.9

127

Run-off (acrefeet)

3,980

3,220

2,630

69,490

2,230

2,090

4,040

9,500

29,010

23,460

5,590

3,720

2,790

92,260

June

458

436

415

415

480

416

406

412

480

406

370

338

362

316

312

347

362

396

688

634

501

462

431

436

474

390

342

' 300

257

200

July

803

188

164

134

126

113

102

96

93

89

81

87

87

96

111

102

91

83

89

SI

73

57

46

47

44

64

64

62

57

65

51

Diversion by

Moffat 

tunnel 

(aore-feet)

966

0

0

28,870

0

0

0

0

8,310

14,530

7,800

3,370

1,910

36,290

Aug.

49

46

43

41

57

88

62

71

69

66

69

83

88

62

61

el

83

70

62

71

71

68

61

57

64

64

51

47

46

47

43

Sept.

40

41

39

37

37

36

37

67

61

64

61

66

68

57

64

49

47

46

46

44

44

41

44

47

49

49

44

41

43

46

-

Adjusted for

diversion

Run-off 

(acre-feet)

4,950

3,280

2,630

98,360

2,230

2,090

4,040

9,500

37,320

37,990

12,790

7,090

4,700

188,550

nean 

(second*- 

feet)

80.6

54.1

42.7

136

36.3

37.6

65.7

160

607

638

208

116

79.0

178

 Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by loe Nov. 12-30, Dec. 14 to Mar. 31.
TRIBUTARIES ABOVE OREEN RIVER 41

Vasquez Creek near Winter Park, Colo.

Location.- Water-stage recorder, lat. 39°55'15" f long. 105 047'C»", in NWi sec. 33, T. 1

3., R. 75 W., a quarter of a mile upstream from mouth, li miles downstream from Moffat

tunnel diversion, and 2t miles northwest of Winter Park. Datum of gage is 8,768.48

feet above mean sea level, unadjusted. 

Drainage area.- 27.S square miles. 

Records available.- June 1907 to October 1909, August 1934 to September 1941. Records

since May 26, 1937, equivalent to earlier records if flow through Pioneer bore of

Moffat tunnel is added to flow past'station. 

Extremes.- Maximum discharge during year, 187 second-feet June 18 (gage height, 2.08

feet ); minimum daily, 0.2 second-foot July 2, 3. Vasquez Creek and diversion to Moffat

tunnel combined: maximum not determined; minimum 4 second-feet Feb. 1-5, 26-28.

1934-41: Maximum discharge, 396 second-feet June 15, 1935 (gage height, 2.64 feetj;

minimum daily, 0.1 second-foot June 4, 5, 8-27, 29, 30, July 3, 7-17, 21-24, 1940. 

Remarks.- Records good except those for periods of ice effect, which are fair. Conslderable portion of flow above station diverted to Moffat tunnel. 

Cooperation.- Records of diverted flow through Pioneer bore of Moffat tunnel furnished

by State engineer.

Discharge, In aaoond-faat, natar year Ootobar 1940 to September 1941

Bay

1

2

3

4

5

«

7

8

9

10

11

12

IS

14

16

ie

17

16

19

20

21

22

23

24

25

25

27

88

29 

80

31

Oot.

3.5

3.1

8.8

2.6

2.8

3.1

3.1

2.8

2.8

3.1

2.8

2.8

2.8

2.8

3.1

13

13

13

12

12

12

12

12

12

11

11

12

10

12 

11

10

Nov.

11

12

IB

11

9.0

9.0,

11

 13

12

11

9.0

8.0

7.2

7.5,

8.0.

9.5

1212 ; 12

10 ,

10 '

10

9.6

9.6

9.6

9.6

9.6

9.6

9.6J 

9.2i

Deo.

8.4

8.4

8.8

8.4

8.8

9.2

8.8

9.2

11

10

8.6

7.8

7.5

7.4

7.4

7.2

7.8

7.2

7.4

7.4

7.4

7.5

7.5

8.0

8.2

6.2

8.2

8.4

8.4 

8.4

6.4

Month

Calendar year 1940.

January

April................

Hay..................

July... ..............

Water year 1940-41

Jan.

7.6

1

(

'

.2

.4

.2

7.8

6.8

e

'

1

.4

.2

,Z

7.2

7.2 !

»E

£

.6

.0

.0

6.8

6.8

e

6

e

.8

.4

.0

6.0

6.0

4

e

s

.8

.2

.2

5.0

5.0

e

6

.2

.0

4.5 

4.5

4.5

Fab.

4

4

4

4

4

4.

4.

4

4

4.

5.

5.

5.

6.

6.

5.

5.

5.

5.

6.

*6.

5.

4.

4.

4.

4.

4.

4.

;

0

0

o

0

0

5

5

5

5

5

6

6

6

0

6

6

2

2

6

O

0

Z

5

5

3

0

0

0

Mar.

4

6

6

5

5

6

5

5

5

5

5

5

5

6

6

e

6

6

6

6

5

6

6

6

6

6

*6

7.

6 

6

7

5

0

0

6

6

0

6

0

6

6

6

6

6

4

O

0

0

0

0

0

6

4

4

4

0

0

4

2

5

8

0

Apr.

7.8

7.4

7.4

7.4

7.5

7.5

7.5

7.5

7.6

7.6

7.6

8.4

9.6

8.5

e.o

8.8

8.8

8.8

8.5

8.5

9.0

8.8

8.8

6.8

8.6

 8.6

10

10iE-

-

Hay

13

16

22

23ie

15

13

15

SB

34

28

30

34

22

17

15

15

12

9.6

8.4

8.0

7.2

13

6.4

5.2

5.2

4.5

3.5

3.5 

2.6

Z.Z

Observed

Seeondfoot-daye

232.0

302.6

2S4.6

1,845.8

J94.9

135.0

185.4

253.1

449.3

911.6

22.9

85.6

86.8

2,993.8

Maximum

13

13

11

16

8.0

6.0

7.2

10

34

140

3.1

1.5

1.2

140

Minimal

8.6

7

O 

 <O

7.8

.1

4.5

4.0

4.5

7.2

2.2

.3

.Z

.6

.6

.2

Haan

*/ Ao I «%9

10.1

8.21

5.04

6.29

4.82

5.96

8.44

14.5

30.4

.74

.83

.69

8.20

Run-off &?!-

460

600

505

3,660

387

268

368

502

891

1,810

45

51

53

5,940

June

1.6

1.5

1.4

1.4

1.3

1.2

1.1

1.0

1.0

1.2

1.8

2.0

1.6

.8

.7

.7

.6

14

140

135

98

67

64

69

90

74

65

54

21 

.3

July

0.3

.2

.2

.3

.4

.4

.3

.3

.3

.3

.3

.7

.6

.6

.6

.4

.4

.4

1.0

3.1

2.8

1.0

.8

.8

.9

1.1

1.1

1.0

.8 

.8

.7

Diversion 

1)3

Moffett 

tunnel 

acre-fee t)

493

0

0

13,900

0

0

0

0

4,050

5,620

3,630

1,530

902

16,120

Aug.

0.7

.6

.6

.6

.6

.7

.7

.8

.6

.9

1.3

1.5

1.0

.e

.9

1.1

1.3

.9

.9

1.0

.8

.8

.8

.7

.7

.8

.8

.7

.7

.7

.6

Adjusted 

dl varsl

Run-off 

(aore-feet)

953

600

506

17,560

367

868

368

508

4,940

7,430

3,580

1,580

955

82,070

Sept.

0.6

.6

.6

.6

.6

.6

.7

1.2

1.8

1.2

 1.2

1.0

1.0

1.1

1.0

.9

.8

.8

.8

.8

.8

.8

1.0

1.0

1.0

1.0

.9

.9

1.0

1.1

for 

on

Haan 

[aeoondfeet)

15.5

10.1

8.81

24.2

6.29

4.82

6.98

8.44

80.4

126

68.8

26.7

16.1

30.5

* Winter discharge measurement made on this day.

Kote.-Stage-discharge relation affected by Ice Kov. 1-7, 10-18, Dec. 11-28, Jan. 25, 26, 28, 29, 

eb. 1-10, Feb. 26 to Mar. 1, Mar. S, 10, 89, Mar. 31 to Apr. 8, Apr. 14, 16, 19-22.
42 TRIBUTARIES ABOVE GREEN RIVER

St. Louis Creek near Fraser, Colo.

Location.- Water-stage recorder, lat. 39 054'45", long. 105052'35M , In sec. 34, T. 1 S., 

R. 76 W., a third of a mile downstream from confluence of East and West Branches and 

4fc miles southwest of Fraser.

Drainage area.- 32.8 square miles.

Records available.- August 1934 to September 1941.

Extremes.- Maximum discharge during year, 248 second-feet June 24 (gage height, 2.28 

reet;, from rating curve extended above 210 second-feet; minimum dally, 7.2 secondfeet Feb. 27.

1934-41: Maximum discharge, 353 second-feet June 15, 1935 (gage height, 2.58 

feet), from rating curve extended above 210 second-feet; minimum, 3.2 second-feet 

Apr. 9, 1935 (gage height, 0.75 foot).

Remarks.- Records excellent above 25 second-feet and good below except those Nov. 1 to 

Mar. 31, which are fair. No regulation or diversion.

Discharge, In second-feet, water rear October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

23 

23 

20 

23

24 

22 

21 

23 

22

20 

19 

18 

18 

17

16 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

17 

16 

16 

16 

15

HOT.

12 

14 

14 

12 

10

9.0 

12 

*12 

11 

11

10 

9.5 

8.5 

9.0 

11

12 

12 

10 

11 

10

10 

9.5 

9.0 

9.0 

9.0

9.0 

9.0 

9.5 

10 

9.5

Dec.

9.0

9.0 

9.0 

9.0 

9.0

9.0 

9.0 

9.0 

9.5 

9.0

8.5 

S.5 

8.0 

8.0 

8.0

8.0 

8.0 

8.0 

8.0 

8.0

8.0 

8.5 

8.5 

9.0 

9.0

9.0 

9.0 

9.0 

9.0 

9.5 

9.5

Jan.

9.0 

8.8 

8.4 

7.5 

8.5

9.0 

8.2 

9.0 

9.6 

9.6

9.6 

9.6 

9.6 

9.6 

9.6

9.6 

9.6 

9.6 

9.2 

9.2

9.2 

9.2 

8.8 

8.8 

8.0

8.0 

8.0 

8.0 

8.0 

8.0 

8.0

Feb.

8.4 

8.8 

S.4 

S.O 

7.5

7.5 

7.5 

7.5 

8.0 

8.2

8.4 

8.4 

8.4 

8.0 

8.0

8.0 

8.0 

8.0 

8.4 

8.8

8.0 

8.0 

8.4 

8.0 

8.0

7.5 

7.2 

7.8

Month

Oct 

HOT 

Dec

C

Jar 

Pel 

Mai

Api 

Maj 

Jur 

JuJ 

Auj 

Se;

1

alendar year 194 0.. ........ ............

 11. . .

Fater year 1940-4

liar.

S.4 

8.0 

S.O 

8.4 

8.0

8.0 

S.O 

8.8 

8.0 

8.8

S.4 

8.0 

8.0 

8.8 

8.8

8.S 

8.8 

8.8 

8.8 

8.4

8.4 

9.2 

9.2 

8.8 

8.8

8.8 

8.8 

7.7 

7.4 

7.4 

8.0

Apr.

8.0 

8.0 

8.0 

8.0 

S.O

8.0 

S.O 

8.0 

8.0 

8.4

8.4 

10 

10 

9.2 

S.8

10 

8.8 

8.8 

8.8 

9.2

10 

9.6 

9.2 

9.6 

10

10 

11 

12 

13 

14

Secondfoot-days

574 

313.5 

269.5

9,599.6

274.8 

225.1 

260.5 

280.8 

2,201 

4,034 

2,098 

922 

594

12,047.2

Bay

16 

18 

22 

24 

18

16 

14 

18 

29 

40

50 

68 

93 

95 

81

76 

86 

93 

89 

81

86 

89 

93 

102 

106

114 

116 

114 

116 

115 

122

Maximum

25 

14 

9.5

141

9.6 

8.8 

9.2 

14 

122 

193 

114 

36 

26

193

June

118 

120 

122 

127 

134

129 

127 

124 

114 

104

95 

89 

93 

98 

102

114 

132 

156 

172 

172

172 

172 

172 

188 

193

162 

149 

139 

127 

118

July

114 

106 

102 

98 

97

91 

89 

86 

82 

81

78 

76 

71 

67 

65

65 

61 

58 

57 

55

52 

50 

48 

46 

46

49 

47 

43 

41 

39 

38

Minimum

15 

8.5 

8.0

6.0

7.5 

7.2 

7.4 

8.0 

14 

89 

38 

21 

16

7.2

Aug.

35 

34 

33 

32 

34

34 

34 

32 

30 

30

33 

33 

30 

27 

30

35 

33 

30 

30 

36

32 

30 

28 

26 

26

24 

23 

22 

22 

23 

21

Mean

18.5 

10.4 

8.69

26.2

8.86 

S.04 

8.40 

9.36 

71.0 

134 

67.7 

29.7 

19.8

33.0

Sept.

20

20 

18 

19 

IS

17 

18 

24 

24 

26

26 

24 

23 

24 

21

19 

19 

18 

18 

18

17 

17 

19 

19 

19

18 

17 

16 

18 

20

Run-off In 

acre-feet

1,140 

622 

535

19,040

545 

446 

517 

557 

4,370 

8,000 

4,160 

1,830 

1,180

23,900

« Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice HOT. 1 to Jan. 8, Feb. 3-10, 26-28.
TRIBUTARIES ABOVE GREEN RIVER 43

Ranch Creek above forks, near Fraser, Colo.

Location.- Water-stage recorder, lat. 39°56'30", long. 105°44'00", in SWi sec. 24, T. 1 

S., R. 75 W., 0.8 mile upstream from North Fork and 4 miles east of Fraser.

Drainage area.- 3.8 square miles.

Records available.- April 1937 to September 1941 (no winter records 1940 and 1941).

Extremes.- Maximum discharge during year, 62 second-feet June 17 (gage height, 2.19 feet); 

minimum daily, 1.0 second-foot Apr. 24, probably less during period of no record.

1937-41: Maximum discharge, 67 second-feet June 21, 1938 (gage height, 3.45 feet); 

minimum dally, 0.4 second-foot Apr. 1-3, 10, 11, 16, 17, 19, 20, 1939.

Remarks.- Records good June 1 to July 31, fair for the remainder of year. No diversion 

or regulation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

SO

21 

28 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

3.1 

3.1 

3.0 

3.0 

3.0

3.3 

3.3 

3.3 

3.4

NOT. Dec. Jan. Feb.

Month

Oct 

NOT 

Dec

C

Jai 

Pel 

Mai

Apj

Mai 

Jui 

Ju] 

AUJ 

Se

7

ober 1-E ...............................

alendar year

 11 24-3C

y......................................

later year

Mar. Apr.

<a7o

1.2

1.3 

1.5 

1.7 

1.7 l.s

Secondfoot-days

28.5

-

10.2 

603.3 

S65 

231.8 

39. 1 

64.1

-

May

2.5 

3.5 

4.S 

4.4 

4.0

3.4 

3.0 

3.4 

3.8 

4.5

11 

IS 

29 

37 

2S

22 

2S 

36 

30 

21

19 

19 

17 

20 

30

37 

35 

33 

32 

31 

33

Maximum

3.4

-

1.8 

37 

42 

15 

4.1 

2.5

-

June

31 

31 

32 

35 

35

31 

31 

30 

26 

22

20 

IS 

18 

20 

28

35 

42 

41 

40 

37

35 

36 

35 

30 

88

24 

22 

19 

17 

16

July

15 

14 

18 

11 

11

9.4 

9.4 

9.1 

8.5 

S.2

7.9 

7.9 

7.3 

7.3 

7.0

7.0 

6.5 

6.5 

6.2 

6.2

5.S 

5.5 

5.2 

5.0 

5.0

5.0 

5.0 

4.S 

4.5 

4.3 

4.3

Minimum

3.0

-

1.0 

2.5 

16 

4.3 

1.8 

1.7

-

Aug.

4.1 

4.1 

3.9 

3.7 

3.9

3.7

4.1 

3.5 

3.3 

3.1

3.5 

3.7 

3.1 

2.7 

2.7

2.9 

2.7 

2.7 

2.7 

2.7

2.4 

2.3 

2.3 

2.1 

2.1

2.0 

1.9 l.s

1.8 

1.8 

1.8

Mean

3.17

-

1.46 

19.5 

28.8 

7.48 

2.87 

2.14

-

Sept.

1.8 l.s

1.7 

1.7 

1.7

1.7 

1.9 

2.1 

2.8 

2.3

2» 3 

2.8 

2.3 

2.3 

2.1

2.1 

2.1 

2.1 

2.1 

8.0

2.0 

8.8 

2.4 

2.4 

2.5

8.4 

2.4 

2.4 

2.5 

2.4

Run-off In 

acre -feet

57

-

20 

1,200 

1,720 

460 

177 

127

-

* Winter discharge measurement a 

Note.- Stage-discharge relation

461676 O-42-4

ide on this day.

iffected by Ice Apr. 24 to May 9.
44 TRIBUTARIES ABOVE GREEN RIVER

Ranch Creek near Fraser, Colo.

Location.- Water-stage recorder, lat. 39 0 55'15M , long. 105°47'05", in NWi sec. 22, T. 1 

 S., R. 75 W., 150 yards downstream from South Fork and 3 miles east of Fraser.

Drainage area.- 19.9 square miles.

Records available.- August 1934 to September 1941.

Extremes.- Maximum discharge during year, 169 second-feet June 17 (gage height, 2.63 

reet); minimum daily, 3.1 secpnd-feet Feb. 15, 17-28.

1934-41: 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 excellent above 10 second-feet and good below except those for periods 

of ice effect, which are fair. No diversions above station.

Discharge, In second-feet, water year October 1040 to September 1041

Day

1 

2 

3 

4 

5

6 

7 

8 

0 

10

11 

IS 

13 

14 

IS

16 

17 

IS 

10 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

10 

8.9 

8.4 

7.9 

9.2

9.7 

9.2 

9.4 

10 

10

9.4

9.2 

8.9 

8.6 

S.6

8.6 

6.4

S.I 

8.1 

7.9

7.6 

7.6 

7.6 

7.4 

7.2

7.2 

7.4 

6.7 

6.0 

6.9 

6.7

NOT.

7.4 

7.2 

6.7 

5.S 

5.5

S.4

10 

10 

9.2 

S.3

7.2 

5.9 

4.1 

4.4 

4.7

S.I 

S.3 

S.4 

S.4

s.o

5.0 

4.6 

4.2 

4.7 

4.S

4.5 

4.S 

4.6 

4.6 

4.6

Dec.

4.6 

4.S 

4.S 

4.3 

4.0

4.1 

4.2 

4.3 

4.2 

4.2

3.9 

3.9 

4.1 

3.7 

3.9

3.6 

3.7 

4.0 

3.0

3.6

3.8

3.S 

4.0 

4.3 

4.3

4.3 

4.1 

4.1 

4.1 

4.1 

4.1

Jan.

4.0 

3.8 

3.6 

3.6 

3.8

3.7 

3.7 

3.7 

3.7 

3.7

3.6 

3.4 

*3.3 

3.2 

3.2

3.2 

3.2 

3.2 

3.3 

3.3

3.3 

3.3 

3.4 

3.4 

3.5

3.4 

3.3

3.4 

3.5 

3.5

3.5

Feb.

3.S 

3.4 

3.3 

3.3 

3.3

3.3 

3.3 

3.4 

3.S 

*3.5

3. a 

3.4 

3.4 

3.3 

3.1

3.3

3.1 

3.1 

3.1 

3.1

3.1 

3.1 

3.1 

3.1 3.1'

3.1 

3.1 

3.1

Month

Oet 

Non 

Dec

C

Jan 

Pet 

Mar 

Apr 

Ma, 

JUE 

Jul 

Aug 

SeE

H

a lender year 194 0... ...................

11.............. .......................

ater year 1940-4

liar.

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 

3.4 

3.3

3.3 

3.4 

3.4 

3.4 

3.4

3.3 

3.4 

3.4 

3.3 

3.3

3.3 

3.4 

3.6 

3.6 

3.4 

3.6

Apr.

4.0 

3.8 

3.8 

4.0 

4.4

4.4 

4.1 

4.0 

4.0 

4.3

4.1 

S.I 

5.7 

4.6 

4.4

4.4 

4.4 

4.3 

4.3

4.1

4.3 

4.4 

4.6 

4.9 

5.7

6.9 

7.9 

8.9 

8.9 

S.9

Secondfoot-days

257.7 

173.8 

126.4

5,569.6

107.7 

91.0 

104.1 

151.6 

2,054 

2,043 

66S.4 

282. 5 

220.8

7,181.0

May

11 

13 

18 

16 

13

12 

11 

13 

19 

28

38 

S3 

74 

89 

SI

77 

87 

99 

87 

75

79 

S6 

SI 

87 

103

116 

110 

116 

116 

116 

121

Maximum

10 

10 

4.6

108

4.0 

3.S 

3.6 

8.0 

121 

124 

40 

14 

0.7

124

June

114 

114 

116 

118 

120

114 

114 

110 

100 

93

ss

80

77 

79 

OS

110 

124 

122 

121 

US

107 

107 

101 

94 

67

79 

72 

66 

57 

52

July

40 

45 

41 

38 

37

33

31 

30 

27 

26

24 

23 

20 

10 

IS

18 

16 

IS 

14 

14

14 

13 

12 

11 

IS

13

13 

11 

11 

11 

9.4

Mlnlwuni

6.7 

4.2 

3.6

2,S

3.2 

3.1 

3.3 

3.8 

11 

52 

0.4 

6.4 

S.S

3.1

Aug.

s.e

8.1

S.I 

7.0 

7.0

S.9 

0.2 

9.7 

8.9 

8.9

10 

14 

11 

9.4 

9.7

12 

11 

9.7 

9.7 

10

9.7 

9.4 

8.9 

6.4 

6.4

S.4 

7.0 

7.4 

7.4 

7.2 

6.4

Mean

8.31 

5.79 

4. OS

15.3

3.47 

3.25 

3.36 

5.05 

66.3 

96.1 

21.6 

9.11 

7.36

19.7

Sept.

6.4 

6.4 

6.2 

6.2 

6.0

6.0 

6.2 

S.6 

0.2 

9.4

9.7 

6.0 

8.6 

9.7 

7.9

7.4 

6.0 

6.7 

7.2 

5.8

5.5 

5.8

7.2 

7.4 

S.4

8.4 

8.1 

7,2 

6.7 

6.7

Run-off In 

acre-feet

511 

345 

251

11,090

214 

ISO 

206 

301 

4,070 

5,840 

1,330 

560 

438

14,250

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 1-6, NOT. 10 to Feb. 12.
TRIBUTARIES ABOVE QREEN RIVER 45

Ranch Creek near Tabernash, Colo.

Location.- Water-stage recorder, lat. 39P59'55", long. 105°49'10", In sec. 6, T. 1 S., R.

 75 W., a quarter of a mile upstream from Meadow Creek and It miles east of Tabernash.

Drainage area.- 50.7 square miles.

Records available.- September 1934 to September 1941.

Extremes.- Maximum discharge during year, 278 second-feet May 26 (gage height, 3.42 feet); 

minimum dally, 6.0 second-feet Nov. 13.

1934-41: 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.

Remarks.- Records good except those Oct. 1 to Apr. 25, which are fair. Several small

 diversions above station for Irrigation.

Discharge, In second-feet, water year October 1640 to September 1641

Day

1 

2 

S

4

6

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

89 

24 

26

26 

2Y 

28 

29

SO 

91

Oct.

22 

20 

19 

18 

18

22 

20 

20 

20 

22

19 

18 

17 

18 

18

18 

18 

16 

16 

16

IS 

14

14 

14 

14

IS 

14 

12 

12 

12 

12

HOT.

12 

12 

12 

12

IS

18 

16

le

14 

12

8.8 

6.2 

6.0 

6.6 

7.8

9.8 

12 

12 

12 

11

11 

11 

12 

12 

IS

12 

11 

11 

11 

12

Dec.

12 

12 

11 

11 

11

11 

10 

10 

10 

9.2

9.0 

9.0 

8.6 

8.0 

7.4

7.2 

7.2 

7.2 

7.2 

7.2

7.2 

7.4 

7.6 

7.6 

7.6

7.6 

7.8 

7.8 

8.0 

8.0 

8.2

Jan.

7.8 

7.4 

6.8 

6.6 

6.4

6.6 

6.6 

6.S 

7.0 

7.0

7.2 

7.0 

7.0 

7.0 

7.0

6.8 

6.8 

6.8 

6.8 

6.6

6.6 

6.6 

«6.6 

6.6 6.4-

6.4 

6.4 

6.4 

6.2 

6.2 

6.8

Feb.

6.2 

6.2 

6.2 

6.2 

6.2

6.2 

6.2 

6.4 

6-4 

6.4

6.4 

6.4 

6.4 

6.6 

6.8

7.0 

7.2 

7.2 

7.4 

 7.6

7.Y 

7.8 

7.8 

7.8 

8.0

8.0 

8.2 

8.2

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Mar 

Apt 

Ma5 

Jur 

Jul 

At* 

Set

D

alendar year 194 0......................

Fater year 1940-4

Mar.

8.2 

8.2 

8.2 

8.2 

8.4

8.4 

S.4 

8.6 

8.4

8.4

8.6 

8.4 

8.2 

8.2 

8.2

8.8 

8.4 

8.4

8.6 

8.8

9.0 

9.8 

9.2 

9.6 

11

12 

 18 

14 

16 

18 

17

Apr.

22 

21 

20 

20 

19

19 

19 

20 

29 

25

S2 

40 

48 

44

38

36 

36 

32 

92 

32

92 

SS 

35 

32 

33

 87 

36

45 

46 

44

Secondfoot-days

521 

947.1 

270.0

11,627.2

208.6 

195.1 

S04.4 

951 

4,707 

4,729 

968 

524 

366.0

14,185.2

May

42 

48 

56 

56 

44

42 

32 

90 

44

73

108 

142 

202 

882 

210

186 

204 

2SO 

806 

178

182 

806 

188 

196 

219

239 

248 

823 

221 

808 

217

Maxim 

22 

18 

12

210

7.6 

8.2 

18 

48 

249 

20S 

72 

26 

19

248

June

208 

168 

192 

166 

202

188 

188 

188 

172 

168

144 

1S8 

126 

121 

142

162 

180 

192 

192 

182

170 

168 

156 

144 

184

117 

107 

94 

81 

78

July

72 

67 

68 

52

50

45 

41 

40 

98 

95

94 

82 

28 

30 

SI

28 

25 

26 

25 

25

22 

21 

20 

18 

18

24

22 

19 

18 

18 

16

Minimal

12 

6.0 

7.2

9.8

6.2 

6.2 

S.2 

19 

SO 

79 

16 

11 

9.5

6.0

Aug.

14 

14 

IS 

12 

14

17 

17 

19 

16 

15

16 

26 

25 

18 

18

2& 

24 

20 

20

OQ

19 

17 

16 

16 

15

15 

14 

12 

12 

12 

11

Mean

16.8 

11.6 

8.71

31.8

6.78 

6.97 

9.82 

81.7 

1S2 

167 

82. 2 

16.9 

12.9

38.7

Sept.

11 

11 

10 

10 

10

9.5 

10 

18 

17 

18

19 

16 

14 

16 

14

12 

12 

18 

12 

11

10 

9.5 

12 

12 

14

15 

14 

12 

12 

13

Run-off in 

acre-feet

1,030 

688 

536

28,060

414 

887 

604 

1,8«0 

9,340 

9,870 

l,«8fr 

1,040, 

76*

28,040

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected try Ice NOT. 11 to Apr. 25.
46 TRIBUTARIES ABOVE GREEN RIVER 

North Fork of Ranch Creek near Fraser, Colo.

Location.- Water-stage recorder, lat. 39057'00", long. 105°44'20", In northeast corner 

or sec. 23, T. IS., R. 75 W., 0.6 mile upstream from mouth and 4 miles east of 

Fraser.

Drainage area.- 3.6 square miles.

Records available.- April 1937 to September 1941 (no winter records during years 1940 and 

1941).

Extremes.- Maximum discharge during year, 33 second-feet June 17 (gage height, 1.72 feet); 

minimum daily, 0.8 second-foot Aug. 28, 29, 31, probably less during period of no 

record.

1937-41: Maximum discharge, 62 second-feet June 21, 1938 (gage height, 2.00 feet), 

from rating curve extended above 40 second-feet; minimum dally, 0.4 second-foot Oct. 

28, 30, 1940.

Remarks.- Records fair. No diversion or regulation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

2.4 

2.5 

2.4 

2.3 

2.4

2.6 

2.6 

2.7 

2.9

Nov. Dec. Jan. Feb.

Month

Dot 

No-v 

Dec

C

Jan 

Pet 

liar 

Apr 

May 

Jur 

Jul 

Aug 

Sep

n

ober 1- Q

alendar year

11 25-3C

tember.. 

ater yea r

Mar. Apr.

1.5

1.6 

1.6 

1.6 

1.6 

1.6

Secondfoot-days

22.8

-

9.5 

375.2 

619 

172.1 

48.4 

48.1

-

May

1.7 

1.9 

2.7 

2.6 

2.1

2.0 

1.9 

1.9 

2.7 

4.2

6.0 

8.5 

12 

15 

13

13 

14 

18 

16

14

16 

18 

16 

18 

20

23 

23 

22 

22 

22 

22

Maximum

2.9

-

1.6 

23 

25 

13 

2.6 

2.3

-

June

22 

22 

23 

24 

25

22 

22 

22 

20 

18

17 

16 

16 

17 

20

22 

25 

25 

25 

24

24 

24 

22 

21 

20

19 

18 

16 

15 

13

July

13 

12 

10 

10 

9.0

8.5 

8.0 

7.5 

7.0 

6.6

6.2 

5.8 

5.4 

5.2 

4.8

4.7 

4.4 

4.1 

4.0 

4.0

3.6 

3.4 

3.2 

2.9 

3.1

3.1 

2.9 

2.6 

2.5 

2.3 

2.3

Minimum

2.3

-

1.5 

1.7 

13 

2.3 

.8 

.9

-

Aug.

2.2 

2.1 

2.0 

1.9 

2.0

2.1 

2.0 

1.9 

1.8 

1.9

1.9 

2.6 

1.9 

1.6 

1.7

2.2 

1.8 

1.4 

1.4 

1.4

1.2 

1.1 

1.1 

1.0 

1.0

1.0 

.9 

.8 

.8 

.9 

.8

Mean

2.53

-

1.58 

12.1 

20.6 

5.55 

1.56 

1.60

-

Sept.

0.9 

.9 

.9 

.9 

.9

.9 

1.0 

1.4 

1.6 

1.9

2.2 

2.0 

1.9 

2.3 

1.9

1.7 

1.7 

1.6 

1.6 

1.6

1.6 

1.6 

1.9 

1.9 

1.9

1.9 

1.9 

1.8 

1.9 

1.9

Run-off In 

acre-feet

45

-

19 

744 

1,230 

341 

96 

95

-
TRIBUTARIES ABOVE GREEN RIVER 

Middle Pork of Ranch Creek near Fraser, Colo.

47

Location.- Water-stage recorder, lat. 39°56'00", long. 105°44'40n , on line between sees.

 iJ5 and 26, T. IS., R. 75 W., 1.6 miles upstream from South Fork and 4.2 miles east 

of Fraser.

Drainage area.- 4.4 square miles.

Re cords avallable.- April 1937 to September 1941 (no winter records during years 1940 and 

1941).

Extremes.- Maximum discharge during year, 77 second-feet June 17 (gage height, 1.53

 feet); minimum recorded, 0.6 second-foot Apr. 24 (gage height, 0.49 foot), less during 

period of no record.

1937-41: Maximum discharge, 124 second-feet June 21, 1938 (gage height, 1.88 feet), 

from rating curve extended above 85 second-feet; minimum not determined, occurred during period of Ice effect.

Remarks.- Records good except those for period of missing gage heights, which are fair. 

No diversion or regulation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

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 

1.9 

l.S

l.s

1.9 

1.8 

2.0

Nov. Dec. Jan. Feb.

Month

Dot 

Not 

Dec

C

Jar 

Pet 

Har 

Apr 

Haj 

Jur 

Ju]

Aug

Sej

I

ober 1-6

ember

alendar year

11 24-3C

fater year

Mar. Apr.

0.6 

.6

.7 

.8 

.7 

.7 

.7

Secondfoot-days

15.2

-

4.8 

390.2 

933 

207.7 

65.0 

50.7

-

May

0.9 

1.2 

2.0 

1.8 

1.4

1.2 

1.0 

1.4 

2.4

4. a

6.0 

9.7 

11 

13 

14

13 

16 

21 

14 

12

11 

20 

17 

20 

23

25 

25 

25 

25 

26 

26

Maximum

2.0

-

.8 

26 

51 

17 

3.4 

2.1

-

June

26 

27 

23 

30 

31

31 

32 

32 

31 

30

23 

20 

20 

23 

30

42 

43 

51 

48 

42

41 

39 

38 

35 

30

27 

23 

20 

18 

17

July

17 

15 

14 

12

11

11 

10 

8.9 

S.5

7.6

7.2 

6.9 

6.3 

6.0

5.7

5.4 

5.1 

4.5 

4.5 

4.5

4.0 

3.8 

3.6 

3.4 

3.6

3.4 

3.4 

3.0 

3.0 

2.8 

2.6

Minimum

1.8

 -

.6

.9 

17 

2.6 

1.4 

1.1

-

Aug.

2.4 

2. 8

a. 2 

a.i

2.2

2. a

3.0 

2.4 

2.1

2.1

2.2 

3.4 

2.S 

2.2 

2.2

2.6 

2.2 

2.1 

2.0 

2.2

2.0 

2.0

l.S 

1.7 

1.7

1.6 

1.5 

1.5 

1.5 

1.5 

1.4

Mean

1.90

-

.69 

12.6 

31.1 

6.70 

2.10 

1.69

-

Sept.

1.4 

1.4 

1.4 

1.4 

1.2

1.1 

1.2 

1.7 

2.0 

2.1

2.1 

1.8 

2.1 

2.1 

1.7

1.6 

1.6 

1.6 

1.5 

1.5

1.4 

1.7 

1.8 

l.S 

2.0

2.0 

1.8 

1.7 

2.0 

2.0

Run-off in 

acre-feet

30

-

9.5 

774 

1,850 

412 

129 

101

-

Note.- No gage-height record 

Ranch Creek near Fraser.

ay 20, Hay 25 to June 9; discharge computed on basis of record for
48 TRIBUTARIES ABOVE OREEN RIVER

South Fork of Ranch Creek near Winter Park, Colo.

Location.- Water-stage recorder, lat. 39°54'4511 , long. 105°44'40", In SEfc sec. 35, T. 1

 S3., K. 75 W., 2.8 miles upstream from mouth and 5 miles northeast of Winter Park.

Drainage area.- 2.55 square miles.

Re cords avallable.- November 1936 to September 1941 (no winter records during years 1940 

ana 1941;.

Extremes.- Maximum discharge during year, 43 second-feet May 30 (gage height, 1.31 feet);

 minimum recorded, 0.8 second-foot Apr. 24 (gage height, 0.14 foot), and less during 

period of no record.

1936-41: Maximum discharge, 59 second-feet June 1, 1938 (gage height, 1.43 feet)', 

from rating curve extended above 42 second-feet; minimum, probably between 0.2 and 

0.4 second-foot at times during period of ice effect.

Remarks.- Records fair. No diversion or regulation.

Discharge, In second-feet, water year October 1940 te September 1941

Bay

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14ie

16 

17 

18 

19 

20

El 

22 

23 

24 

25

26

27 

28 

29 

30 

31

Oct.

1.3 

1.1 

1.0 

.9 

.9

1.0 

.9 

1.1 

1.1

NOT. Dec. Jan. Feb.

Month

Oot 

Hoi 

Doc

C

Jar 

Fet 

Max 

Apr 

Ma, 

Jur 

Ju3 

Au« 

Sej

n

ober 1-9

alendar year

11 24-31

Fater year

Mar. Apr.

0.8 

1.1

1.4 

1.4 

1.3 

1.2 

1.5

Secondfoot -days

9.3

-

8.5 

431.2 

549 

152.0 

54.1 

41.1

-

May

1.6 

2.2 

3.6 

2.9 

2.1

1.9 

1.6 

2.2 

3.8 

6.0

7.3 

10 

13 

15 

15

16ie

IS 

17 

17

20 

19 

IS 

20 

22

26 

25 

26 

25 

28 

28

Maximum

1.3

-

1.4 

23 

25 

9.9 

3.1 

1.9

-

June

25 

25 

24 

24 

24

22 

22

21 

20 

19

17 

16 

16 

14 

15

16 

17 

19 

20 

20

20 

20 

IS 

17 

16

15 

14 

12 

11 

10

July

9.9 

9.0 

S.2 

7.8 

7.1

6.7 

6.7 

6.2 

5.8 

5.6

5.6 

5.4 

5.0 

5.0 

4.S

4.6 

4.2 

4.2 

4.2

4.0

3.6 

3.3 

2.9 

2.7 

3.1

2.9 

3.1 

2.9 

2.7 

2.4 

2,4

Minima

0.9

-

.8 

1.6 

10 

2.4 

1.0 

.9

-

Aug.

2.2 

2.1 

2.1 

1.9 

1.9

1.9 

3.1 

2.2 

1.9 

2.1

2.1 

3.1 

2.1 

1.8 

l.S

1.9 

1.6 

1.5 

1.8 

1.6

1.5 

1.4 

1.3 

1.2 

1.3

1.2 

1.1 

1.1 

1.2 

1.1 

1.0

Mean

1.03

-

1.21 

13.9 

18.3 

4.90 

1.75 

1.37

-

Sept.

1.0 

1.0 

1.0 

1.0 

1.0

.9 

1.0 

1.4 

1.6 

1.8

1.9 

1.6 

l.S 

l.S 

1.4

1.4

1.3 

1.3 

1.2 

1.2

1.2 

1.8 

1.6 

1.5 

1.6

1.4 

1.3 

1.3 

1.4 

1.4

Run-off In 

acre-feet

18

-

17 

856 

1,090 

301 

107 

S2

-
TRIBUTARIES ABOVE GREEN RIVER

Meadow Creek near Tabernash, Colo.

Location.- Water-stage recorder, lat. 40°02'55", long. 105°46'30", In sec. 15, T. 1 N., R. 

75 w., 5 miles northeast of Tabernash.

Drainage area.- 7.0 square miles.

Records available.- May'1936 to September 1941 (no winter records for 1941).

Extremes.- Maximum discharge during year, 150 second-feet May 25 (gage height, 3.22 feet), 

 from rating curve extended above 85 second-feet; minimum dally, 0.9 second-foot Apr. 27,

probably less during period of no record.

1936-41: Maximum discharge, 197 second-feet June 3, 1938 (gage height, 3.67 feet,

site and datum then In use); probably no flow at times during Ice periods.

Remarks.- Records good except those for period of Ice effect, which are fair, 

sions above station.

No dlverDlacharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

a

7 

8 

9 

10

11 

18 

13 

14 

15

18 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

87 

28 

29 

30 

31

Oct.

4.2 

3.6 

3.3 

2.0 

2.0

3.9 

3.9 

3.3 

4.2 

4.2

2.8 

2.1 

1.8 

1.8 

1.6

1.5 

1.4 

1.4 

1.4 

1.3

1.3 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

1.3 

1.3 

1.3 

1.3

NOT.

1.2 

1.2 

1.2 

1.3 

1.2

1.2 

1.3 

1.3 

1.3 

1.3

1.3 

1.3 

1.3

Dec. Jan. Feb.

Month

Oot 

No\ 

Dec

C

Jax 

Pet 

Mar 

Apr 

Ha, 

Jur 

Ju3 

Aug 

Set

D

ember 1" 13.............................

alendar year

ater year

Mar. Apr.

*b0.9 

bl.O 

bl.O 

bl.l

Secondfoot-days

66.0 

16.4

-

1,648.5 

1,262 

215.6 

113.0 

66.2

-

Hay

bl.3i.e

3.9 

8.8 

13

14 

11 

8.2 

9.5 

22

40 

44 

68 

90 

76

62 

83 

7S 

72 

67

76 

78 

84 

89 

100

97 

81 

71 

69 

64 

66

Maximum

4.2

1.3

-

. 100 

64 

17 

12 

6.0

-

June

64 

58 

53 

56 

57

51 

53 

57 

49 

50

38 

38 

35 

35 

39

46 

46 

49 

49 

45

44 

42 

36 

33 

30

27 

24 

22 

19 

17

July

17 

17 

15 

14 

12

12 

10 

9.8 

10 

8.5

6.9 

5.9 

6.3 

6.6 

 6.6

5.4 

4.5 

4.2 

3.6 

3.9

3.9 

3.9 

2.6 

2.1 

5.1

6.3 

3.3 

2.6 

2.0 

1.9 

1.7

Minimum

1.3 

1.2

-

1.3 

17 

1.7 

1.4 

1.3

-

Aug.

1.6 

1.5 

1.4 

1.4 

1.8

1.9 i.e

2.2

1.7 

1.6

2.1 

12 

10 

4.8 

3.0

6.3 

8.8 

6.0 

6.3 

8.2

5.7 

4.8 

3.3 

2.4 

2.2

2.1 i.e

1.6 

1.6 

1.6 

1.5

Mean

2.13 

1.26

-

53.2 

42.1 

6.95 

3.65 

2.21

-

Sept.

1.4 

1.4 

1.4 

1.4 

1.4

1.3 

1.4 

2.4 

2.8 

5.7

6.0 

3.6 

2.6

4.8 

2.8

2.1 

1.7 

1.6 

1.6 

1.5

1.4 

1.4 

1.5 

1.6 

2.1

2.4 

1.8 

1.6 

1.6 

1.9

Run-off In 

acre-feet

131 

33

-

3,270 

2,500 

428 

224 

131

-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
50 TRIBUTARIES ABOVE GREEN RIVER

Strawberry Creek near Granby, Colo.

Location.- Water-stage recorder, lat. 40°05'10", long. 105°49'30", in SWiSWi sec. 32, T. 2 

N., R. 75 W., 0.6 mile downstream from Little Strawberry Creek and 6 miles east of 

Oranby.

Drainage area.- 12.6 square miles.

Records available.- May 1936 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 93 second-feet May 13 (gage height, 2.09 feet); 

 minimum daily, 0.1 second-foot Oct. 14, 16, 22-25, 28-31, Nov. 3-6, Sept. 7, probably

no flow at times during winter.

1936-41: Maximum discharge, 132 second-feet May 29, 1938 (gage height, 2.91 feet),

from rating curve extended above 110 second-feet; no flow at times in August,September,

and November 1939, Sept. 7, 1940, and probably at times during extremely cold weather

In each year.

Remarks.- Records good except those for period of ice effect, which are fair. No records 

Nov. 11 to Mar. 27. Two diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

S

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

SI

Oct.

1.4 

1.4 

1.0 

.9 

1.4

2.8 

1.6 

.8 

.3 

.3

.2 

.3 

.6 

.1 

.2

.1 

.3 

.5 

.5 

.5

.4 

.1 

.1 

.1

.1

.2 

.6

.1 

.1 

.1 

.1

Nov.

0.2 

.2

.1 

.1 

.1

.1 

.3 

.3 

.2 

.2

Dec. Jan. Feb.

Month

Oet 

NOT 

Dec

C

Jar 

Fet 

Mat 

Api 

Ma, 

Jur 

Jul 

Auj 

Sei

H

'ember 1- 10.............................

alendar year

 11. .......... ..

ater year

Mar.

«2.9 

3.0 

2.9 

3.2

Apr.

3.3 

3.2 

3.3 

3.5 

3.8

3.8 

3.8 

3.7 

3.7 

3.8

4.2 

4.8 

5.5 

4.8 

4.6

4.6 

4.6 

4.6 

4.7 

4.7

5.2 

5.6 

6.8 

9.0 

9.8

9.8 

10 

12 

14 

18

Secondfoot-days

17.2 

1.8

-

183.2 

1,125 

158.1 

128.0 

64.4 

51.5

-

May

21 

24 

31 

30 

23

18 

16 

21 

27 

39

48 

61 

64 

70 

63

56 

56 

55

48 

41

38 

36 

35 

32

31

28 

26 

24 

25 

25 

13

Maximum

2.8 

.3

-

18 

70 

11 

11 

8.8 

5.2

-

June

6.9 

6.2 

4.6 

4.0 

3.6

3.3 

3.0 

4.0 

3.0 

3.6

2.8 

2.6

1.9 

1.2 

1.0

1.9 

1.4 

1.4 

6.9 

8.2

7.5 

7.8 

8.8 

9.8 

9.3

8.5 

11 

9.8 

7.2 

6.9

July

8.8 

11 

7.5 

6.2 

6.2

6.2 

5.2 

5.2 

5.4 

4.4

4.0 

4.0 

3.6 

3.8 

4.2

3.3 

2.6 

2.5 

2.0 

2.6

3.0 

3.0 

2.3 

1.9 

3.0

6.2 

3.3 

2.6 

1.7 

1.3 

1.0

Minimum

0.1 

.1

-

3.2

13 

1.0 

1.0 

.4 

.1

-

Aug.

0.6 

.6 

.4 

.4 

.4

2.0 

1.0 

1.7 

1.0 

.6

1.3 

8.S 

7.5 

4.2 

3.0

3.4 

6.6 

3.6 

2.5 

3.1

2.3 

2.2 

1.4 

1.2 

.6

.6 

.9 

.6 

.6 

.7 

.6

Mean

0.55 

.18

-

6.11 

36.3 

5.27 

4.13 

2.08 

1.72

-

Sept.

0.4 

.4 

.4 

.3 

.3

.4 

.1 

2.2 

3.1 

4.2

5.2 

3.4 

2.5 

2.6 

2.2

1.7 

1.0 

.6 

.5 

.4

.5 

.6 

1.7 

2.0 

2.6

3.3 

2.5 

2.0 

1.9 

2.5

Run-off In 

aere-feet

34 

3.6

-

363 

2,230 

314 

254 

128 

102

-

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 5, 6, Mar. 28 to Apr. 24.
TRIBUTARIES ABOVE GREEN RIVER 51

Williams River below.Steelman Creek, Colo.

Location.- Water-stage recorder, lat. 39°46'45", long. 105°55'30", 'in sec. 20, T. 3 S., 

R. 76 W., Just downstream from Steelman Creek and 7 miles southeast of Leal.

Drainage area.- 16.3 square miles.

Records available.- October 1933 to September 1941 In reports of Geological Survey. July 

1933 to September 1941 In reports of State engineer. Records since May 10, 1940, 

equivalent to earlier records If flow diverted through Jones Pass tunnel is added to 

flow past station.

Extremes.- Maximum discharge during year, 321 second-feet June 24 (gage height, 2.22 feet); 

minimum dally, 1.2 second-foot Sept. 2-6, may have been less during period of Ice 

effect.

1933-41: Maximum discharge, 441 second-feet June 21, 1938 (gage height, 2.48 

feet), from rating curve extended above 260 second-feet; minimum observed prior to 

beginning of diversion through Jones Pass tunnel, 1.1 second-feet (discharge 

measurement) Mar. 29, 1940; minimum recorded, 0.9 second-foot Aug. 14, 1940 but may 

have been less during period of ice effect.

Remarks.- Records fair. Transmountaln diversion through Jones Pass tunnel to Clear Creek 

started May 10, 1940.

Cooperation.- Records of flow diverted through Jones Pass tunnel furnished by State 

engineer.

Discharge , In second-feet, mater year October 194O to September 1941

Day

1

2

3

4

e

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

25

24

26

26

27

28

29

30

31

Oct.

18

17

15

13

15

16

15

15

15

14

13

12

12

11

11

11

10

10

9.8

9.6

9.3

9.1

9.]

8.S

8.6

8.6

8.8

S.4

9.6

9.1

8.6

HOT.

13

11

8.8

8,2

7.8

8.5

9.3

8.2

7.9

7.9

7.0

6.0

6,0

6.2

6.2

6.2

6.2

6.4

6.4

6.4

6.2

6.0

5.8

5.6

5.6

5.4

5.4

5.2

5.0

4.8

-

Dec.

 4.0

Month

Calendar year 1940

March.... ............

April................

May..................

July. ................

Water year 1940-41

Jan.

' 3.0

Feb.

 2.5

-

-

-

Mar2.0

Apr.

1

1

1

1

1

2

2

2

1

2.

2

2

2.

2.

2.

2

2

2

2.

2

2

2

2

2

2

2

2

2.

2

3

Observed

Seoondfoot-days

360.4

20S.6

124.0

2,515.9

93*0

70.0

62.0

64.1

965.2

2,407.8

693.4

49.6

231.0

5,329.1

Maximum Minimum Mean

18 8.4 11.6

13 4.8 6.95

4.0

43 - 7.69

3.0

8.6.

_ 20

3.2 1.8 sll4

100 4.4 31.1

£38 7*1 SO* 3

110 1.7 22.4

2.1 1.3 1.60

14 1.2 7.70

228 - 14.6

9

9

9

9

9

O

O

0

8

0

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

3

5

6

6

2

May

4.4

5.4

7.3

8.0

7.1

5.8

5.2

6.0

10

20

36

71

10OS4 -

65

6O

78

82

65

55

28

16

IS

16

16

16

16

16

16

16

16

Run-off (acrefeet!

715

414

246

5,580

1 OA. J.EI4

139

1 J.iCO 9^ 

127

1,910

4,780

1,380

98

458

10,570

June

14

14

14

14

14

12

12

11

9.7

8.6

7.8

7.5

8.0

7.5

7.3

7.1

7.3

11

96

220

220

228

220

228

220

192

186

158

134

119

July

110

103

100

96

S8

82

40

a4.5

a4.4

a4.4

a4.2

a4.4

a4.2

a4.0

aS.8

a3.7

a3.6

a3.3

a3.2

aS.O

a2.7

2.3

2.1

2.0

2.4

2.5

2.3

2.0

1.9

1.8

1.7

Diversion by

Jones 

tunnel 

(acre-feet)

0

0

0

9,560

0

0

0

0

1,540 3,4-;o

2,110

946

124

8,190

Aug.

1.8

1.7

1.7

1.6

1.5

1.7

1.6

1.5

1.5

1.7

l.S

1.8

1.5

1.7

1.9

2.1

1.8

1.7

1.7

1.7

1.8

1.5

1.7

1.5

1.4

1.4

1.3

1.3

1.3

1.3

1.3

Sept.

1.3

1.2

1.2

1.2

1.2

1,2

1.3

5.0

12

14

12

10

11

12

10

9.3

S.6

9.0

S.6

8.2

8.2

9.3

10

10

10

9.0

8.2

8.0

10

10

Adjusted for 

diversion

Run-off 

(acre-feet)

715

414

246

15,140

184

139

123

127

3,450

8,250

3,490

1,040

582

18 ,760

Mean 

(secondfast)

11.6.

6.95

4.0

20.9

3.0

2.5

2.0

2.14

56.2

139

56.7

17.0

9.78

25.9

a Nc gage-height record; discharge computed on basis of record for station near Leal, Colo. 

Note.- Stage-dlseharge relation affected by Ice Nov. 5, 6, Nov. 8 to Apr. 21.
TRIBUTARIES ABOVE GREEN 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.- 84 square miles.

Records available.- October 1933 to September 1941 In reports of U. S. Geological Survey. 

July 1933 to September 1941 In reports of state engineer.* Records since May 10, 1940, 

equivalent to earlier records If flow through Jones Pass tunnel is added to flow past 

station.

Extremes.- Maximum discharge during year, 972 second-feet June 24 (gage height, 3.11 feet); 

minimum dally, 15 second-feet Mar. 8.

1933-41: 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 dally, 13 

second-feet Dec. 28, 29, 1939.

Remarks.- Records good except those for periods of ice effect and period of no gage-height 

record, which are fair.

Cooperation.- Records of flow diverted through Jones Pass tunnel furnished by State engineer.

Discharge, in second-feet, nater year October 1940 to September 1941

Day

1

9

S

4

6

6

7

8

9

10

11

12

IS

14

IB

u

17

IB

19

80

21

88

as

24

85

85

87

SB

SO

30

31

Oot.

61

63

60

44

50

56

50

61

53

60

48

45

44

42

40

40

39

38

37

36

36

36

36

36

34

33

35

33

30

33

34

NOT.

28

30

32

32

£6

 38

33

32

33

30

86

b23

b24

b24

b25

b25

b26

. b26

b26

27

27

26

26

26

26

26

26

25

25

_

-

Deo.

26

24

24

23

23

23

23

23

23

23

23

23

b21

b20

22

22

22

22

23

22

22

22

22

22

22

22

22

22

23

22

22

Month

Calendar year 1940.

April................

Bay..................

duly. ................

August...............

Water year 1940-41.

Jan.

t

4

25

22

20

22

22

21

21

20

20

21

24

21

22

22

gg

22

23

22

23

23

23

123

23

23

23

22

22

gg

22

21

21

Feb.

20

20

b!8

19

20

20

20

19

19

19

18

18

18

18

18

18

17

18

»18

18

18

18

16

a!7

a!8

a!7

a!6

a!6

_

_

-

Mar.

is

17

17

IS

16

16

16

15

16

16

16

16

16

16

16

16

16

17

17

18

19

19

19

18

17

17

17

18

19

20

18

Apr.

21

20

20

20

20

20

20

19

18

20

20

24

26

23

23

23

23

23

23

22

22

24

26

28

29

31

38

41

46

48

May

56

61

79

92

78

69

57

66

102

138

185

237

342

350

301

242

288

331

301

248

255

252

245

281

277

294

301

277

281

288

305

Observed

Seoondfoot-days

1,301

818

697

23,666

685

509

528

761

6,679

11 1 896

4,457

1,501

1,304

31,133

Maximum

61

33

25

430

25

20

20

43

350

696

338

62

60

696

Minimum

30

23

20

14

20

16

15

1 xoft

56

S&4

56

36

33

15

Mean

42.0

27.3

22.5

64.7

22.0

IS. 2

17.0

25.4

215

O9O <zQc 

144

48.4

43.5

85.3

Run-off 

acre -feet]

2,580

1,620

1,380

46,930

1,350

1,010

1,050

1,510

13,250

23,590

3,840

2,980

2,690

61,760

Jtme

29S

204

294

305

316

SOS

312

308

281

268

232

224

226

234

229

266

308

364

485

660

672

654

672 '684

696

688

507

465

408

368

July

338

319

301

284

268

262

219

160

146

140

130

138

130

126

183

121

109

104

107

104

92

87

84

79

76

84

84

72

66

58

56

Diversion

through

Jones Pass

tunnel 

(acre -feet)

0

0

0

9,560

0

0

0

0

1,640

3,470

2,110

946

124

8,190

tog.

65

60

48

49

48

52

53

53

48

46

50

68

60

44

51

61

63

60

60

55

56

50

50

45

43

42

38

37

36

39

37

Sept.

36

36

35

35

34

33

34

45

55

68

60

53

49

56

46

46

44

43

42

41

40

40

44

44

48

42

40

39

41

49

-

Adjusted for

diversion

Run-off 

(acrefeet)

2,580

1,620

1,380

56,490

1,350

1,010

1,050

1,610

14,790

27,060

10,950

3,930

2,710

69,940

ABGUI 

(secondfeet)

42.0

27.3

22.5

77.8

22.0

18.8

17.0

26.4

241

465

17S

63. 8

45.5

96.6

# Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of recorded range of stage and weather records.

b Stage-discharge relation affected by Ice.
TRIBUTARIES ABOVE GREEN RIVER 

Williams River near Parshall, Colo.

53

Location.- Water-stage recorder, lat. 40°00', long. 106°11', In sec. 1, T. IS., R. 79 W.,

 24 miles upstream from Battle Creek and 4 miles south of Parshall. Datum of gage Is

7,805.00 feet above mean sea level. 

Drainage area.- 184 square miles. 

Records available.- July 1904 to September 1924, October 1933 to September 1941 In reports

 of U.S. Geological Survey. July 1904 to September 1924, June 1933 to September 1941 

In reports of State engineer. Records since May 10, 1940, equivalent to earlier records If flow through Jones Pass tunnel Is added to flow past station.

Average discharge.- 28 years (1904-24,. 1933-41), 161 second-feet.

Extremes.- naximum discharge during year, 740 second-feet June 25 (gage height, 3.13

 feet); minimum dally, 25 second-feet Feb. 27.

1904-24, 1933-41: Maximum discharge observed, 2,570 second-feet June 14, 1918 (gage 

height, 6.0 feet, site and datum then In use), from rating curve extended above 1,400 

second-feet; a higher discharge probably occurred June 15, when gage was destroyed; 

minimum dally, 10 second-feet Sept. 15-17, 1934.

Remarks.- Records excellent except those for period of Ice effect, which are fair. Dlverslohs above station for Irrigation.

Cooperation.- Records of flow diverted through Jones Pass tunnel furnished by State engineer.

Rating table, water year 1940-41, except period of Ice effect (gage height, In feet, and discharge,

In second-feet)

1.1

1.2

1.3

32

40

51

1.4

1.5

1.6

63

78

98

1.7

1.8 2.0

122

150

218

2.2 

2.6 

3.4

295

475

875

Discharge, In seoood-faet, water year October 1940 to September 1941

Day

1

S

s

4

5

6

7

a

9

10

11

12

18

14

15

ie

17

18

19

20

21

28

25

84

26

86

27

28

89

30

31

Dot.

88

78

75

70

69

84

78

76

78

80

75

72

70

69

66

64

63

62

62

61

61

56

59

58

58

56

57

57

53

55

55

Nor.

49

50

52

55

44

«59

53

52

53

46

42

35

27

27

29

32

36

46

46

45

43

43

45

47

49

49

47

45

49

52

D«o.

54

53

50

45

42

43

43

43

45

4*

43

41

37

30

29

30

31

32

32

38

32

33

34

35

33

32

33

34

36

38

39

Month

Calendar year 1940.

March . ...............

April................

July. ................

Water year 1940-41.

Jan.

«

36

34

32

30

32

32

33

34

35

35

36

36

36

34

34

34

32

32

31

32

33

B4

33

33

32

34

33

31

30

31

32

Feb.

30

£

2

2

9

7

6

27

28

2

£

2

7

6

6

26

26

£

£

£

7

e

7

26

26

£

£

 2

6

7

8

27

27

£

£

2

6

6

7

28

27

£

£

5

7

Bar28

£

2

1

e

7

1

28

30

£

£

£

£

8

8

9

8

23

I

I

!

6

7

0

29

28

I

i

I

8

8

8

30

30

!

2

2

1

1

1

32

*53

!

'

^

^

7

13

4

L4

47

Apr.

50

49

48

48

50

52

48

46

46

49

51

59

63

55

57

55

55

51

47

44

43

49

51

56

59

64

76

94

115

130

May

136

150

170

197

157

159

108

108

183

240

318

37«

545

530

470

394

416

462

452

403

376

386

367

390

380

376

394

354

454

344

354

uoservea

Seoondfoot-days

2,067

1,352

1,178

31,209

1,086

755

966

1,755

10,088

11,668

4,078

1,582

1,785

38,250

Maximum

S8

59

54

500

36

30

47

130

545

645

340

63

86

645

Minimum

53

27

29

22

30

25

26

43

108

240

50

37

S7

25

Mean

66.7

45.1

38.0

86.3

33.1

27.0

31.2

58.8

323

389

132

51.0

59.5

105

Run-off 

(acre-feet

4,100

2,680

2,340

61,900

2,040

1,500

1,920

3,500

19,890

23,140

8,090

3,140

3,540

75,880

June

344

322

318

331

340

340

331

358

283

291

271

240

263

255

248

263

295

340

412

586

575

545

575

580

645

57O

490

470

416

372

-

Jiily

340

386

300

287

263.

240

OOO

147

117

110

90

88

60

72

72

72

58

53

100

147

130

115

103

88

72

76

75

69

64

58

50

Diversion

through

Jones Pass 

tunnel 

(acre-feet)

0

0

0

9,560

0

0

0

0

1,540

3,470

2,110

fjAf9*O

134

8,190

Aug.

43

40

37

37

44

53

57

68

56

51

56

63

59

48

39

53

58

58

56

63

61

56

55

52

5C

53

53

48

46

«

41

Sept.

41

40

39

S3

37

3S

39

59

78

84

M

78

78

75

70

64

61

58

58

64

64

63

64

64

63

62

56

56

55

63

Adjusted for

diversion

Run-off 

(acrefeet)

4,100

2,680

2,340

71,460

2,040

1,500

1,920

3,500

21,430

26,610

10,200

4,090

3,660

84,070

 OflLU seoondfeet)

66.7

45.1

38.0

98.4

33.1

27.0

31.2

58.8

349

447

166

66.4

61.6

116

 Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 12 to Mar. 27.
54 TRIBUTARIES ABOVE GREEN RIVER

Troublesome Creek at Atmore Ranch, near Troublesome, Colo.

Location.- Staff gage, lat. 40°12', long. 106°19', in SEi sec. 23, T. 3 N., R. 80 W., 3i 

 miles upstream from East Fork of Troublesome Creek and 10 miles north of old Troublesome post office.

Drainage area.- 50.3 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 209 second-feet May 13 (gage height, 

a.7B reet), from rating curve extended above 150 second-feet; minimum dally, 2.3 secondfeet Sept. 15, 16.

Remarks.- Records fair. Diversions above station for Irrigation. Staff gage read twice

Cooperation.- Gage heights and discharge measurements furnished Apr. 15 to June 30 by 

Bureau or Reclamation.

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1- 

2 

3 

4 

5

6 

7 

8 

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

Oct 

NOT

Dec

C

Jar 

Fel 

liar

Apr 

Maj 

Jun 

Jul 

Aug 

Sep

1

alendar year

11 15-3C

the perle

liar. Apr.

14

14 

14 

14 

15 

15

16 

16 

16 

20 

20

24 

28 

34 

35 

42

Secondfoot-daya

337 

3,126 

839 

697 

476 

189.6

-

May

45 

56 

63 

72 

53

49 

43 

48 

65 

108

116 

152 

182 

182 

171

147 

155 

152 

148 

131

112 

96 

98 

100 

95

95 

94 

84 

79 

69 

66

Maximum

42 

182 

5E 

31 

26 

12

-

June

se

56 

50 

43 

42

38 

33 

31 

29 

29

26 

27 

25 

22 

23

23 

22 

23 

22 

21

21 

20 

19 

19 

19

17 

17 

15 

20 

29

July

31 

29 

27 

26 

26

23 

23 

IS 

21 

28

27 

27 

26 

26 

26

25 

24 

24 

24 

26

23 

18 

16 

14 

16

21 

17 

17 

16 

16 

16

Minimum

14 

43 

15 

14 

12 

2.3

-

Aug.

16 

15 

14 

14 

12

12 

15 

14 

13 

14

14 

16 

16 

16

16

26 

20 

17 

16 

16

16 

16 

16 

16

15

16 

14 

14 

14 

13 

14

Mean

21.1 

101 

28.0 

22.5 

16.4 

6.32

-

Sept.

12

12 

12 

12 

12

12

4.2 

3.S 

3.5 

3.3

2.8 

2.8 

2.8 

2.6 

2.3

2.3 

2.6 

2.6 

3.2 

3.2

6.3 

6.0

8.1 

9.0 

8.7

9.0 

6.9 

6.6 

7.5 

7.5

Run-off In 

acre-feet

668 

6,300 

1,660 

1,380 

944 

376

11,230
TRIBUTARIES ABOVE GREEN RIVER 55

East Fork of Troublesome Creek near Troublesome, Colo.

Location.- Chain gage, lat. 40°10', long. 106°17', in NEi sec. 6, T. 2 N., R. 79 W.,

 a quarter of a raile upstream from mouth and 7i miles north of old Troublesome post 

office. Prior to Aug. 28, staff gage at same site and datum.

Drainage area.- 81.4 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge not determined; minimum daily discharge, 0.6 second-foot

Remarks.- Records fair. Diversions above station for irrigation. Staff gage read twice

 dally Apr. 15 to May 12, May 22 to Aug. 27. Chain gage read twice daily Aug. 28 to 

Sept. 30.

Cooperation.- Gage heights and discharge measurements furnished Apr. 15 to June 30 by 

Bureau or Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

87 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month -

Oct 

HOTI

Dec

C

Jar 

Fet 

Max

Apr

Jui 

Ju3 

Aug

Sej

1

alendar year

11 15-30

the peri<

liar. Apr.

17

17 

17 

14 

16 

19

9.4 

12 

18 

20 

27

35 

31 

42 

44 

63

Secondfoot-days

401.4 

5,067 

1,729 

280.0 

125.5 

134.6

-

May

76 

90 

101 

106 

100

94 

96 

107 

89 

118

180 

230 

a300 

a300 

a290

a250 

a250 

a260 

a250 

a225

a200 

166 

160 

160 

157

151 

121 

118 

113 

106 

100

Maximum

63 

300 

101 

15 

S.5 

9.8

-

June

94 

96 

94 

96 

93

91 

101 

89 

83 

75

72 

66 

60 

58 

55

54 

53 

50 

46 

44

33 

36 

33 

29 

25

24 

22 

18 

17 

17

July

15 

15 

14 

14 

13

13 

13 

13 

13 

12

10 

9.8 

9.4 

9.4 

9.4

9.8 

9.8 

9.0 

8.1 

6.9

6.1 

6.5 

5.7 

5.7 

4.9

5.3 

5.3 

4.2 

4.0 

3.5 

2.2

Minimum

9.4 

79 

17 

2.2 

.6 

.8

~

Aug.

1.4 

1.4 

1.4 

1.3 

1.1

1.0 

.8 

.6 

.9 

3.8

3.2

2.8 

2.0 

3.0 

4.5

7.3 

7.7 

8.5 

6.9 

6.1

4.9 

6.1 

6.5 

6.5 

6.1

5.3 

5.7 

5.7 

5.. 3 

4.2 

3.5

Mean

25.1 

163 

57.6 

9.03 

4.05 

4.49

~

Sept.

2.5 

2.2 

l.S 

1.6 

1.3

.9 

1.5 

4.5 

9.0

9.8

9*4 

8.1 

8.1 

8.1 

9.0

9.4 

7.7 

6.9 

6.6 

*#

4.2 

3.8 

3,2 

2.5

1.8

1.6 

1.4 

1.2 

.9 

.S

Run-off In 

acre-feet

796 

10,050 

3,430 

555 

249 

267

15,350

a Ho gage-height record; discharge computed on basis of records for Troublesome Creek at Atmore 

Ranch, near Troublesome, Colo.
56 TRIBUTARIES ABOVE GREEN RIVER

Muddy Creek near Kremmllng, Colo.

Location.- Staff gage, lat. 40°18», long. 106°31', In SWi sec. 18, T. 4 N., R. 81 W., 

Just upstream from Albert Creek and 18 miles northwest of Kremmllng.

pralnage area.- 71.7 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 658 second-feet May 14 (gage height, 

3.86 feet), from rating curve extended above 350 second-feet; minimum dally, 0.7 

second-foot Aug. 6.

Remarks.- Records fair. Several small diversions above station for Irrigation. Some 

regulation by Barber Reservoir (capacity, 4,290 acre-feet).

Cooperation.- Oage-helght records and discharge measurements from Apr. 24 to June 30 

Ished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 tc September 1941

Day

?

3

4

S

s

7

B

9

10

n

12

13

14

IS

IB

17ia

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct. Nov. Dec. Jan. Feb.

Month

tooraber. ..................................

Calendar year ......................

May. .......................................

September. .................................

The period . . .

liar. Apr,

^

»

.

_

-

_

«.

-

_

-

-

_

-

_

-

_

-

_

-

_

_

_

65

53

62

74

91

134

116

Secondfcct-days

_w

9,469

2

ftAA

135.7

-

May

121

. 151

206

283

828

143

181

834

315

360

448

468

530

565

510

360

388

408

386

269

265

863

298

322

318

290

295

858

216

190

167

Maximum

_

..

9.5

-

June

160

151

143

130

126

121

116

134

114

132

120

106

114

88

93

fli

84

80

65

60

58

53

55

56

69

35

26

19

23

19

Minima

_

.7

1.2

-

July

12

10

19

11

13

18

18

16

16

13

12

9.5 a.%9.0

9.5

7.5

6.5

4.7

4.1

9.5

9.5

5.0

5.0

2.9

2.3

3.5

3.6

2.9

2.3

2.3

2.9

Aug.

2.0

1.3

1.3

1.2

1.0

.7

1.0

1.0

1.9

1.9

6.0

5.0

5.0

6.5

4.1

3.8

6.5

6.5

7.0

6.0

4.4

3.S

3.8

4.1

5,0

3.8

3.2

2.3

2.0

1.9

1.7

Mean

_

85.0

3.38

4.5B

-

Sept.

2.0

1.7

1.6

1.3

1.2

1.4

1.2

1.7

7.0

8.0

9.0

8.0

8.0

8.0

9.5

7.0

7.0

7.0

6.0

4.1

2.6

2.3

2.6

3.5

4.4

4.1

4.4

3.5

3.8

3.8

-

Run-Off ll 

acre-feet

_

1,180

269

26,210
TRIBUTARIES ABOVE GREEN RIVER 57

Blue River at Dillon, Colo.

Location.- Water-stage recorder, lat. 39°36'50", long. 106°03'05", in sec. 18, T. 5 S.,

 R. 77 W., 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 1941.

Average discharge.- 31 years, 120 second-feet'.

Extremes.- Maximum discharge during year, 654 second-feet June 19 (gage height, 3.39

 feet), from rating curve extended above 500 second-feet; minimum dally, 15 secondfeet Jan. 17.

1910-41: 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, 7i4 

second-feet Mar. 22, 1933 (discharge measurement).

Remarks.- Records good except those for periods of ice effect, which are fair. 

 dally all water diverted above station is returned to river above.

PractiDlaoharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

S3 

24 

25

26 

27 

28 

29 

30 

31

Oet.

76 

76 

74 

69 

65

65 

65 

62 

61 

59

55 

54 

52 

51 

50

50 

49 

48

46 

45

44 

43 

42 

42 

41

40 

40 

38 

37 

36 

36

Nov.

34 

34 

33 

35 

34

*S4 

34 

34 

34 

34

32 

28

25 

26 

28

as

26 

29 

30 

28

26 

24 

23 

25 

25

26 

24 

25 

26 

28

Dec.

26 

24 

25 

27 

24

25 

30 

32 

30 

27

24

20 

22 

21 

20

20 

22 

21 

20 

20

21 

22 

22 

22 

21

20 

19 

20 

20 

21 

21

Jan.

20 

19 

IS 

17 

IS

16 

17 

IS

ie

19

19 

18 

*1S 

*17 

16

16 

15 

16 

16 

17

17 

18 

17 

16 

17

18 

18 

17 

16 

18 

19

Feb.

19 

IS 

16 

16 

17

17 

17 

18 

19 

19

19 

*19 

IS 

17 

18

18 

18 

18 

18 

18

18 

18 

18 

18 

18

19 

20 

20

Month

Oet 

Hoi 

Dec

C

Jar 

Fat 

Maz 

Apr 

Ma;, 

Jur 

JvJ 

Aug 

8ei

H

alendar year 1940..... .................

rater year 1940-4

liar.

17 

16 

17 

IS 

17

16 

16 

16 

17 

*17

17 

17ie

18 

19

19 

20 

20 

21 

21

21 

20 

20 

19 

18

17 

18ie

19 

19 

19

Apr.

20 

19 

19 

19 

19

19 

19 

 20 

20 

19

20 

22 

23 

22 

22

23 

23 

24 

23 

21

21 

82 

82 

24 

87

31 

94

35 

38 

42

'Secondfoot-daya

1,611 

872 

709

25,377

541 

506 

565 

712 

7,206 

11,960 

6,207 

2,987 

1,683

35,669

toy

43 

53 

87 

113 

116

107 

107 

146 

138 

169

202 

251 

334 

406 

354

302 

281 

323 

309 

260

230 

266 

225 

230

251

278 

292 

302 

323 

342 

366

Maximum

76 

35 

32

379

20 

20 

21 

42 

406 

608 

313 

130 

62

608

June

379 

334 

33S 

362 

370

374 

366 

366 

342 

312

245 

218 

208 

210 

233

306 

370 

480 

600 

608

586 

670 

560 

525 

560

540 

470 

430

381 

337

July

313 

294 

280 

277 

270

252 

243 

237 

234 

228

225 

231 

231 

213 

195

186 

175 

172 

180 

183

175 

162 

152 

145 

138

142 

148 

145 

138 

125 

118

Minimum

36 

23 

19

10

15 

16 

16 

19 

43 

208 

118 

64 

49

15

Aug.

106 

96 

96 

96 

96

96 

96 

96 

96 

98

94 

113 

ISO 

185 

116

118 

113 

111 

111 

104

100 

96 

96 

90 

83

80 

73 

70 

66 

64 

66

Mean

52.0 

29.1 

22.9

69.3

17.5 

18.1 

18.2 

23.7 

832 

399 

800 

96.4 

56.1

97.4

Sept.

62 

60 

59 

55 

54

54 

54 

55 

56 

58

62 

62 

62 

58 

56

55 

55 

54 

53 

52

50 

49 

64

67 

68

57 

56 

56 

65 

65

Run-off in 

acre -feet

3,800 

1,730 

1,410

' 50,340

1,070 

1,000 

1,180 

1,410 

14,290 

23,720 

12,310 5,920' 

3,340

70,520

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 11-30, Dec. 11 to Apr. 6.
58 fRIBUTARIES ABOVE GREEN RIVER

Blue River below Green Mountain Reservoir, near Kreinmling, Colo.

Location.- Water-stage recorder, lat. 39°56', long. 106°21', in NEi sec. 33, T. 1 S., R. 

 80 W., Just downstream from Spring Creek, about 4 miles downstream from Green Mountain 

Dam, and 10 miles southeast or Kremmling.

Drainage area.- 623 square miles.

Records available.- October 1937 to September 1941.

Extremes.- Maximum discharge during year, 3,010 second-feet June 19 (gage height, 5.17 

feet); minimum daily, 84 second-feet Mar. 12.

1937-41: 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, 80 secondfeet Feb. 1S-24, 1938, Feb. IS, 19, 1940.

Remarks.- Records excellent except those for period of ice effect, which are fair. Many 

diversions above station for irrigation. Green Mountain Dam is under construction.

Rating table, water year 1940-41, except period of ice effect (gage height, in feet,

and discharge, in second-feet) 

{Shifting-control method used Oct. 1-5)

1.3 132 2.2 350 4.2 1,640 

1.5 155 2.7 590 5.2 3,050 

1.7 190 3.2 900 

1.9 245 3.7 1,290

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

322 

315 

301 

267 

280

287 

276 

273 

280 

276

270 

256 

245 

242 

230

221 

215 

208 

208 

208

200 

195 

192 

190 

190

188 

188 

188 

180 

180 

180

NOT.

172 

168 

174 

182 

*161

172 

172 

170 

176 

172

148 

134 

110 

110 

120

130 

140 

140 

135 

125

120 

120 

125 

135 

130

125 

125 

125 

130 

130

Dec.

125 

120 

120 

125 

130

135 

135 

135 

130 

125

120 

115 

115 

100 

95

95 

100 

110 

115

115

120 

130 

125 

120 

120

115 

115 

115 

115 

110 

110

Jan.

105 

95 

92 

92 

86

88 

92 

98 

105 

115

110 

110 

105 

100 

95

100 

110 

105 

105 

95

105 

#102 

100 

100 

96

95 

92 

90 

92 

98 

105

Feb.

100 

88 

S6 

86 

66

86 

68 

90 

95 

100

100 

100 

98 

95 

88

94 

90 

92 

95 

*94

94 

94 

90 

92 

92

90 

85 

86

Month

Oct 

NOD 

Dec

C

Jan 

Fet 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

fl ater year 1940-4

liar.

90 

95 

98 

95 

90

92 

95 

94 

92 

86

88 

84 

90 

98 

94

90 

95 

100 

115 

110

110 

110 

110 

110 

*111

115 

115 

120 

120 

125 

130

Apr.

125 

120 

140 

152 

151

152 

140 

137 

141 

147

151 

172 

198 

167 

167

164 

170 

164 

155 

148

148 

160 

166 

178 

188

212 

259 

308 

322 

343

Secondfoot-days

7,271 

4,276 

3,655

140, 050

3,078 

2,574 

3,167 

5,345 

41,087 

55,160 

28,940 

11,748 

7,443

167,744

May

372 

413 

520 

612 

540

515 

440 

422 

590 

783

1,070 

1,350 

1,890 

2,250 

2,080

1,640 

1,690 

2,080 

1,940 

1,350

1,210 

1,520 

1,410 

1,730 

1,890

1,940 

2,030 

1,760 

1,630 

1,580 

1,840

Maximum

322 

182 

135

2,440

115 

100 

130 

343 

2,250 

2,620 

1,180 

455 

298

2,620

June

1,910 

1,720 

1,840 

1,950 

1,960

1,940 

1,910 

1,940 

1,590 

1,360

1,220 

1,090 

1,080 

1,160 

1,380

1,540 

1,850 

2,390 

2,620 

2,550

2,450 

2,260 

2,280 

2,210 

2,420

2,180 

1,890 

1,710 

1,460 

1,300

July

1,160 

1,110 

1,060 

1,030 

1,020

1,010 

939 

926 

880 

854

809 

828 

828 

750 

669

693 

663 

634 

634 

663

634 

580 

550 

530 

500

530 

530 

525 

490 

460 

431

Aug.

413 

390 

377 

3S6 

377

382 

404 

408 

390 

386

386 

422 

445 

408 

408

450 

455 

436 

426 

408

395 

390 

382 

354 

332

318 

304 

290 

280 

280 

266

Minimum Mean

180 235 

110 143 

95 118

80 384

86 99.3 

85 91.9 

84 102 

120 178 

372 1,325 

1,080 1,839 

431 740 

266 379 

212 248

84 460

Sept.

259 

256 

242 

221 

227

221 

224 

280 

290 

287

290 

290 

276 

298 

294

273 

252 

242 

233 

227

221 

215 

236 

245 

239

230 

221 

215 

212 

227

Run- off in 

acre-feet

14,420 

8,480 

7,250

277,800

6,110 

5,110 

6,280 

10,600 

81,490 

109,400 

45,500 

23,300 

14,760

332,700

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice NOT. 13 to Apr. 3.
TRIBUTARIES ABOVE GREEN RIVER 59

Snake River at Dlllon, Colo.

Location.- Mater-stage recorder, lat. 39036'50", long. 106°03'05", in sec. 18, T. 5 S., 

 R~ 77~W., at private bridge at Dlllon, 100 yards upstream from mouth. Datum of gage 

is 8,820.54 feet above mean sea level (unadjusted).

Drainage area.- 92 square miles.

Records available.- October 1910 to September 1919, December 1929 to September 1941.

Average discharge.- 21 years, 68.6 second-feet.

Extremes.- Maximum discharge during year, 618 second-feet June 24 (gage height, 3.57 

feet), from rating curve extended above 500 second-feet; minimum dally, 5.7 secondfeet Mar. 26.

1910-19, 1929-41: 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, which are fair. One 

diversion above station for power.

Discharge, In second-feet, water year October 1940 to September 1941

Bay

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12

13 

14ie

16 

17 

18 

19 

20

21 

2S 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

12 

12 

13 

14 

14

14 

12 

12 

12 

11

11 

9.9 

9.5 

9.5 

9.5

8.7 

8.7 

8.7 

8.7 

8.7

8.7 

8.3 

6.3 

8.3 

8.3

7.9 

7.9 

7.5 

7.2 

6.9 

6.9

HOT.

7.9 

7.2 

.2 

.2 

.6

* .9 

.5 

8.3 

8.3 

8.3

8.0 

7.4 

7.5 

7.8 

6.2

8.6 

8.8 

6.8 

9.0 

8.6

8.4 

8.0 

7.8 

7.6 

7.8

7.8 

7.6 

7.8 

8.2 

8.2

Dec.

8.2 

7.R 

8.6 

8.2 

9.2

7.5 

7.8 

8.6 

8.9 

7.5

7.2 

7.0 

7.3 

7.6 

6.8

7.2 

7.6 

8.0 

8.0 

8.2

8.6 

9.0 

8.9 

8.6 

8.6

8.6 

7.4 

6.6 

7.5 

7.2 

6.9

Jan.

6.7 

6.6 

6.4 

6.6 

7.0

6.9 

6.S 

6.6 

6.5 

6.6

6.7 

6.S 

6.9 

*7.0 

6.9

6.8 

6.6 

6.6 

6.6 

7.0

7.2 

7.4 

7.6 

7.4 

7.2

7.8 

7.6 

7.4 

7.2 

7.6 

8.0

Feb.

8.2 

8.0 

7.7 

7.6 

7.6

8.0 

8.4 

8.8 

9.0 

9,0

8.9 

*8.9 

8.9 

8.9 

8.9

8.9 

9.6 

9.2 

9.2 

9 2

9.2 

6.9 

8.9 

8.6 

8.6

8.6 

8.4 

8.0

Month

Dot 

HOT 

Dec

C

Jai 

Pel 

Mai 

Apj 

Ma; 

Jui 

Ju] 

Auj 

Se]

1

alendar year 194 0.... ..................

 11

Ly..... .................................

rater year 1940-4

Mar.

7.2 

7.5 

7.5 

9.2 

8.6

7.5 

7.5 

8.0 

8.6 

*10

10 

10 

10 

10 

9.6

9.4 

7.6 

7.8 

8.0 

8.0

7.8 

7.8 

7.5 

6.6 

6.0

5.7 

6.3 

6.3 

6.6 

7.2 

7.5

Apr.

7.2 

6.6 

6.6 

6.3 

6.9

6.9 

6.0 

*6.3 

6.3 

7.2

gie

9.6 

7.8 

8.2

8.2 

8.2 

8.2 

7.5 

7.5

8.2 

7.2 

7.8 

8.6 

11

13 

18 

20 

25 

28

Secondfoot-days

305.1 

239.1 

245.1

13,732.0

217.0 

242.1 

247.3 

295.4 

4,313 

7,218 

2,792 

854 

366.2

17,334.3

Bay

29 

30 

39 

36 

35

29 

24 

35 

55 

74

 95 

127 

197 

236 

188

156 

191 

218 

172 

129

127 

136 

136 

163 

197

229 

250 

215 

236 

243 

286

Maximum

14 

9.0 

9.2

352

8.0 

9.6 

10 

28 

286 

348 

172 

39 

18

346

June

266 

236 

262 

266 

270

270 

262 

243 

215 

180

163 

158 

151 

148

166

188 

243 

302 

322 

302

276 

258 

266 

310 

348

274 

250 

232 

209 

180

July

172 

153 

139 

134 

134

130 

121 

114 

103 

100

103 

114 

96 

87 

87

93 

84 

79 

74 

76

65 

67 

57 

53 

52

55

60 

54 

52 

42 

37

Minimum

6.9 

7.2 

6.6

3.8

6.4 

7.6 

5.7 

6.0 

24 

148 

37 

18 

8.9

5.7

Aug.

36 

34 

35 

36 

31

32 

29 

29 

2S 

28

26 

39 

36 

29 

30

32 

26 

27 

28 

25

25 

26 

25 

22 

21

20 

20 

21 

20 

20 

18

Mean

9.84 

7.97 

7.91

37.5

7.00 

8.65 

7.98 

9.85 

139 

241 

90.1 

27.5 

12.2

47.5

Sept.

ie

17 

16 

16 

15

14 

15 

16 

16 

16

17 

13 

10 

11 

11

11 

11 

10 

10 

10

10 

10 

9.6 

8.9 

8.9

8.9 

8.9 

9.2 

9.6 

9.2

Run-off In 

acre-feet

605 

474 

486

27,230

430 

480 

491 

586 

8,550 

14,320 

5,540 

1,690 

726

34,380

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 5, HOT. 10 to 25, HOT. 27, Dec. 12-22, Jan. 

1 to Feb. 10, Feb. 27, 28, Mar. 8-20.

461878 O-42-5
60 TRIBUTARIES ABOVE GREEN RIVER

Tenmile Creek at Dillon, Colo.

Location.- Water-stage recorder, lat. 39°36'45", long. 106°03'15", in sec. 18, T. 5 S., 

 R. T; W., at Dillon, 250 feet downstream from highway bridge and 200 yards upstream 

from mouth. Datum of gage is 8,817.97 feet above mean sea level (unadjusted).

Drainage area.- 113 square miles.

Records available.- October 1910 to September 1919, April 1930 to September 1941.

Average discharge.- 21 years (1910-19, 1929-41), 124 second-feet.

Extremes.- Maximum discharge during year, 654 second-feet May 17 (gage height, 3.93 feet); 

minimum daily, 13 second-feet Jan. 29, Feb. 3, 4.

1910-19, 1930-41: Maximum diecharge, 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, 2 second-feet Feb. 15-17, 20, 1918.

Remarks.- Records excellent except those for reriod of ice effect, which are fair. Diversions above station for irrigation and mining. Flow partly regulated by Robinson Reservoir (capacity, 2,520 acre-feet).

Rating table, »ater year 1940-41, except period of Ice effect (gage height, In feet, 

and discharge, In second-feet)

l.S

1.9

2.0

2.1

2.2 

2.4

52

66

100

2.7 

3.0 

3.7

160

270

550

Discharge, In second-feet, water year October 1940 to September 1941

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.

47 

50 

48 

42 

44

46 

44 

*45 

46 

47

45 

46 

44 

41 

40

39 

37 

35 

35 

32

30 

29 

29 

28 

28

28 

29 

28 

26 

27 

28

Nov.

23 

25 

27 

2S 

24

*22 

25 

27 

27 

28

24 

20 

18 

20 

22

23 

23 

23 

24 

22

20 

19 

16 

IS 

19

21 

19 

20 

21 

23

Dec.

22 

21 

22 

23 

20

16 

20 

24 

23 

20

19 

17 

IS 

17 

16

17 

18 

17 

17 

17

IS 

19 

19 

19 

18

18 

16 

17 

18ie

19

Jan.

17 

16 

15 

15 

16

16 

15 

16 

16 

17

17 

17 

»16 

*15 

15

15 

14 

14 

14 

15

15 

16 

16 

15 

15

16 

15 

14 

13 

15 

16

Feb.

16 

14 

13 

13 

14

14 

15 

16 

16 

16

*15 

*14 

14 

14 

15

15 

16 

16 

16 

16

17 

17 

17 

17 

16

ie ie

19

Month

Oct 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

May 

Jur 

Jul 

Aug 

Sep

fl

alendar year 1940.. ....................

ater year 1940-4

liar.

16 

17 

18 

20 

19

IS 

IS 

20 

21 

*23

23 

22 

21 

25 

24

23 

25 

27 

28 

28

2S 

27 

26 

25 

24

23 

22 

24 

24 

24 

24

Apr.

25 

24 

24 

24 

25

24 

21 

*22 

24 

26

27 

31 

31 

2S 

28

28 

29 

28 

27 

25

26 

27 

26 

32 

35

41 

53 

55 

56 

65

Secondfoot-days

1,163 

673 

585

27,349

477 

439 

707 

939 

10,503 

11,667 

3,73S 

1,727 

1,171

33,789

May

71

se

12C 

134

107

96

se

92 

13£ 

214

336 

416 

4S2 

506 

456

414 

466 

51S 

446 

334

356 

414 

414 

470 

486

494 

51C 

47C 

436 

446 

47C

Maximum

50 

26 

24

505

17 

19 

28 

65 

51S 

4S6 

218 

68 

53

51S

June

450 

434 

43S 

462 

458

466 

45S 

438 

370 

326

290 

262 

286 

342 

386

414 

442 

4S2 

4S6 

454

434 

426 

406 

390 

414

35S 

322 

290 

255 

228 

-

July

218 

207 

192 

178 

167

156 

158 

156 

149 

136

130 

142 

134 

124 

114

113 

107 

96 

100 

96

S9 

82 

80

77 

79

84 

93 

SO 

72 

66 

63

Minimum

26 

IS 

16

8

13 

13 

16 

21 

77 

228 

63 

39 

31

13

Aug.

5S 

5S 

56 

59 

56

56 

59 

65 

59 

52

60 

66 

63 

56 

62

63 

60 

63 

63 

59

58 

60 

58 

55 

51

50 

42 

40 

39 

40 

39

Mean

37.5 

22.4 

IS. 9

74.7

15.4 

15.7 

22. e 

31.3 

339 

389 

121 

55.7 

39.0

92.6

Sept.

36 

36 

34 

33 

32

31 

32 

44 

46 

52

53 

46 

46 

50 

44

40 

39 

37 

35 

33

33 

36 

40 

41 

38

37 

36 

35 

35 

39

Run-off In 

acre-feet

2,310 

1,330 

1,160

54,250

946 

671 

1,400 

1,860 

20,830 

23, 140 

7,410 

3,430 

2,320

67,010

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 6 to Mar. 27.
TRIBUTARIES ABOVE (BEEN RIVER 61

Roaring Fork at Aspen, Colo.

Location.- Water-stage recorder, lat. 39°11'20", long. 106°48'55", In sec. 7, T. io S., 

R. 84 W., at Aspen, three-quarters of a mile upstream from Hunter Creek.

Drainage area.- 109 square miles.

Records available.- January 1911 to September 1921 and January 1934 to September 1941 in 

reports or Geological Survey. January 1911 to September 1921 and April 1932 to 

September 1941 in reports or 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.- 19 years, 160 second-feet (including now diverted through Twin Lakes 

tunnel).

Extremes.- Maximum discharge during year, 775 second-feet June 24 (gage height, 4.14 

feet), from rating curve extended above 650 second-feet; minimum daily, 7.7 secondfeet Sept. 6.

1911-21, 1933-41: 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, 15 second-feet July 15, 16, 1934; minimum daily since diversion through Twin Lakes tunnel began, 3.2 second-feet Aug. 15, 

1940.

Remarks.- Records good except those for periods of ice effect, which are fair. Transmountain diversion at point 15 miles upstream through Twin Lakes tunnel to Arkansas 

River Basin since May 24, 1935.

Cooperation.- Records of diverted flow furnished by State engineer.

Discharge, In second-feet, water year October 1940 to September 1941

Cay

1

a

z

4

5

6

7

S

9

10

11

12

13

14

16

16

17

18

19

20

21

22

S3

24

25

26

27

28

29

30

31

Oot.

46

45

41

37

39

51

47

46

47

47

44

42

40

39

37

35

33

32

31

31

30

29

29

28

28

28

32

28

26

28

27

Hoy.

23

25

26

27

25

26

27

*26

26

26

26

23

20

20

22

24

25

24

23

22

21

22

21

21

20

20

20

20

20

20

-

Dec.

19

19

19

20

20

20

19

19

19

 18

19

19

19

18

18

17

19

22

19

18

19

20

21

22

22

21

20

22

21

19

18

Month

Calendar year 1940

April................

May..................

July.................

Water year 1940-41

Jan.

16

15

14

15

16

21

21

21

22

21

20

22

22

22

*22

22

21

20

19

20

21

20

19

20

20

20

19

19

19

19

19

Feb.

IS

]

]

]

8

S

8

18

18

]

]

]

8

8

9

19

18

]

]

«]

8

L8

8

18

ie

]

]

]

8

8

8

17

18

]

]

]

7

7

7

17

17

]

]

L4

L6

_

-

-

Marls

18

18

16

18

18

17

16

17

18

18

19

17

18

17

16

17

17

18

18

18

19

18

18

18

17

17

18

19

19

18

Apr. >

20

19

19

18

20

20

16

18

19

21

21

23

24

22

23

23

24

22

21

21

20

23

25

27

31

35

39

41

40

41

-

May

52

56

86

99

80

85

80

100

151

218

264

320

455

459

363

306

341

387

344

237

218

244

244

302

338

359

375

296

28S

292

316

Observed

Second, 

foot-days

1,123

691

605

18,790.9

607

494

548

73S

7,757

10,541

2,438

566

796.1

26,904.1

Maximum

51

27

22

391

22

19

19

41

459

703

1 J.O cm f

24

41

703

Minimum Mean

26 36.2

20 23.0

17 19.5

3.2 51.3

14 19.6

14 17.6

16 17.7

18 24.6

52 250

157 351

25 78.6

10 18.3

7.7 26.5

7.7 73.7

Run-off 

(acre- 

 feet)

2,230

1,370

1,200

37,270

1,200

980

1,090

1,460

15,390

20,910

4,840

1,120

1,580

53,370

June

320

306

330

338

344

327

316

282

224

196

174

157

164

172

187

237

299

375

431

423

407

515

667

703

675

651

555

391

201

174

-

July

157

144

140

132

130

126

122

115

104

104

93

88

82

73

69

67

60

57

57

66

59

54

47

45

44

40

39

38

33

28

25

Diversion 

by

Twin Lake 

tunnel 

acre-feet)

1,020

382

230

28,230

187

116

122

123

10,100

14,880

7,060

1,620

253

36,090

Aug.

23

21

19

18

18

18

20

21

20

20

21

24

18

18

23

22

21

23

20

20

20

21

18

16

15

13

12

11

11

11

10

Sept.

9.6

9.3

8.7

S.4

S.4

7.7

11

22

25

31

33

32

33

40

34

31

38

40

41

41

40

26

27

27

29

31

28

26

27

31

~

Adjusted for 

diversion

Run-off 

(acre- feet)

3,250

1,750

1,430

65,490

1,390

1,100

1,210

1,580

25,490

35,790

11,900

2,740

1,830

89,460

Mean 

! secondfeet)

52.8

29.5

23.3

90.2

22.6

19.7

19.7

26.7

415

601

193

44.6

30.8

124

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 11-19, 27-2 Dec. 12 to Feb. 12.
62 TRIBUTARIES ABOVE GREEN RIVER

Roaring Fork at Glenwood Springs, Colo.

Location.- Water-stags recorder, lat. 39°33', long. 107°20', in sec. 9, T. 6 S., 'R. 89 

w., at Glenwood 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 1933 to September 1941 in reports of U. S. Geological Survey. April 1906 to 

September 1909 and September 1910 to September 1941 in reports of State engineer.

Average discharge.- 35 years (1905-9, 1910-41), 1,496 second-feet (revised).

Extremes.- Maximum discharge during year, 8,300 second-feet May 14 (gage height, 5.64 

reet); minimum daily, 250 second-feet Jan. 4.

1905-9, 1910-41: Maximum discharge, 17,600 second-feet June 14, 1918, and June 14, 

1921; minimum, 145 second-feet Jan. 21, 1935 (gage height, 0.65 foot); minimum daily, 

179 second-feet Jan. 21, 1935.

Remarks.- Records excellent. Diversions above station for irrigation. Transmountain 

aiversion through Twin Lakes tunnel to Arkansas River Basin. Total flow diverted 

during water year 1940-41 was 36,090 acre-feet (see p. 61) for record by months).

Cooperation.- Records of diverted flow furnished by State engineer.

Rating table, water year 1940-41 (gage height, In feet, and discharge, In second-feet) 

(Shifting-control method used Oct. 1-27, Har. 19 to Hay 1)

0.7 235 1.4 690 3.0 2,660

1.0 390 2.0 1,330 4.0 4,520

1.2 520 2.5 1,940 6.0 9,200

Discharge, In second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

16

16

17

18

19

20

21

22

S3

24

25

26

27

28

29

30

31

Oct.

1,060

956

890

840

820

890

830

770

760

760

720

690

663

645

618

618

584

568

552

528

513

492

485

478

471

457

485

485

478

464

471

HOT.

464

478

492

528

478

478

506

499

499

499

471

450

374

368

438

464

478

478

478

464

450

444

444

426

432

426

384

420

420

414

Dec.

414

408

396

390

390

390

396

379

379

396

396

396

390

310

305

280

362

420

362

315

320

357

390

408

390

357

340

396

368

368

362

Jan.

362

290

270

250

275

352

346

368

408

362

352

384

384

325

357

330

330

305

305

325

352

325

330

305

340

300

325

295

325

340

350

Feb.

325

286

275

275

300

305

315

296

315

325

310

315

310

305

300

320

3O5

3O5

320

305

310

316

316

320

325

310

280

285

...

-

Month

March .....................................

Apr 11 .....................................

Hay.......................................

Only..................... .................

Water year 1940-4U. .....................

Har.

330

340

335

315

320

320

305

296

310

270

310

280

305

330

310

290

305

320

330

346

352

374

402

384

368

340

330

346

368

384

384

Apr.

414

402

390

384

408

408

384

368

374

402

402

420

485

457

450

444

450

438

426

402

402

408

432

499

576

663

820

1,070

1,130

1,140

Secondfoot -days

20,041

13,644

11,630

303,031

10,237

8,570

10,298

15,448

118*230

122 38O

60*504

22,050 

21,488

434,420

Hay

1,300

1,410

1,390

2,500

2,290

2,080

1,980

2,100

2,840

3,430

4,120

4,760

6,710

7,340

6,180

4,6OO

4 i860

5,360

5,250

3,830

3,110

3,610

3,540

4,120

4,620

4,800

6,010

4,060

3,670

3,470

3,690

Maximum

1,060

528

420

4,540

408

325

402

1,140

7,340

6,280

3yl&O

870

1,150

7,340

June

3,700

3,630

3,920

4,120

4,400

4,200

4,240

4,060

3,380

2,880

2,580

2,310

2,270

2,320

2,470

2,910

3,450

4,600

6,360

5,490

5,450

5,450

5,900

6,280

5,620

6,36O

4,780

4,280

3,740

3,330

-

July

3,150

2,790

2,800

2,880

2,820

2,550

2,600

2,610

2,560

2,420

2,310

2,210

2,180

1,970

1,840

1,760

1,690

1,670

1,680

2,070

1,750

1,590

1,510

1,410

1,380

1,240

1,160

1,100

1,010

934

860

HlnJjnuni

457

368

280

220

250

276

270

368

1,300

2,270

860

520

438

250

Aug.

790

770

720

700

720

710

710

710

820

370

780

820

780

700

730

780

830

840

790

750

740

720

690

663

645

592

560

528

528

544

520

Mean

646

455

372

828

330

306

332

515

3,814

4,079

1,962

711

716

1,190

Sept.

5O6

515

485

478

457

444

438

562

654

672

681

67E

690

1,150

956

830

770

770

830

810

780

750

870

860

860

850

820

780

760

800

-

Run-off In 

acre-feet

39,750

27,060

22,870

601,000

2O ,300

17,000

20,450

50,640

234,500

242,700

120,000

43,740

42,620

861,600
TRIBUTARIES ABOVE GREEN RIVER 

Crystal River near Redstone, Colo.

63

Location.- Water-stage recorder, lat. 39°1B', long. 107°13', in MEt sec. 9, T. 93., R. 

88 W., 75 feet downstream from Nettle Creek and 7 miles downstream from Redstone. 

Datum of gage is 6,485.07 feet above mean sea level (unadjusted).

Drainage area.- 197 square miles.

Records available.- May 1935 to September 1941. 1908-9 at site 3 miles downstream; 

records not"equivalent.

Extremes.- Maximum discharge during year, 2,940 second-feet May 13 (gage height, 4.85 

reet}, from rating curve extended above 2,200 second-feet; minimum daily, 51 secondfeet Jan. 4.

1935-41: Maximum discharge, 4,400 second-feet June 21, 1938 (gage height, 5.96 

feet), from rating curve extended above 2,200 second-feet; minimum daily discharge, 

46 second-feet Jan. 15, 1940.

Remarks.- Records good except those for periods of Ice effort, which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

2122

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

304 

268 

247 

222 

236

244

219 

202 

200 

194

180 

174 164' 

169 

153

146 

142 

137 

135 

131

128 

124 

123 

120 

118

118 

133 

124 

118 

121 

116

HOT.

108 

110 

113 

118 

104

108 

108 

108 

108 

110

99 

94 

78 

79 

105

108 

112 

113 

115 

110

108 

108 

108 

105 

107

105 

94 

97 

95 

91

Dec.

87 

88 

86 

S7 

84

84 

81 

80 

83 

«80

80 

81 

81 

72 

b72

b66

b85 

94 

79 

73

78

eo

80 

81 

80

75 

72 

83 

78 

75 

75

Jan.

73 

56 

52 

b51 

b55

b69 

b70 

b78 

75 

73

74 

75 

74 

69 

*72

68 

68 

66 

68 

72

73 

72 

70 

70 

70

66 

70 

63 

73 

76 

75

Feb.

70 

63 

60 

67 

70

70 

75 

70 

76 

76

75 

76 

75 

74 

75

75 

74 

74 

76 

74

74 

75 

74 

74 

74

74 

67 

69

Month

Oct 

Koi 

Dei

(

Jai 

Fel 

Mai 

Apj 

Maj 

Jui 

Ju] 

Aus 

So]

y

 11. ........

Ly.... ..................................

'ater year 1940 

Mar.

76 

76

76 

It 7t'

76 

72 

68 

74 

 6

74 

67 

73 

78 

72

73 

75 

79 

80 

88

90 

96 

100 

102 

97

93 

88 

90 

96 

99 

102

Apr.

116 

113 

103 

107 

113

113 

104 

100 

104 

113

115 

126 

142 

133 

133

131 

128 

126 

123 

115

118 

126 

153 

202 

347

295 

368 

414 

422 

438

Secondfoot-days

5,200 

3,126 

2,479

101,260

2,136 

2,026 

2,547 

5,146 

47,036 

50,333 

23 ,430 

6,568 

5,889

155 ,916

May

504 

546 

720 

917 

728

692 

685 

744 

1,090 

1,390

1,540 

1,880 

2,330 

2,410 

2,150

1,850 

1,980 

2,120 

1,980 

1,410

1,410 

1,740 

1,810 

2,000 

2,080

2,140 

2,090 

1,650 

1,430 

1,410 

1,610

Maximum

304 

118 

94

1,760

78 

76 

102 

438 

2,410 

2,460 

1,350 

334 

508

2,450

June

1,630 

1,700 

1,860 

1,920 

1,960

1,810 

1,900 

1 ,700 

1,320 

1,090

908 

784 

768 

863 

1,000

1,270 

1,690 

2,030 

2,230 

2,240

2,160 

2,280 

2,450 

2,250 

2,130

1,980 

1,840 

1,730 

1,530 

1,420

July

1,350 

1,160 

1,210 

1,260 

1,210

1,050 

1,140 

1,OSO 

1,090 

1,000

953 

854 

784 

692 

657

608 

602 

596 

657 

827

602 

535 

508 

478 

458

422 

389 

361 

334 

286 

277

Minimum

116 

78 

72

46

51 

60 

66 

100 

504 

768 

277 

139 

81

51

Aug.

265 

256 

242 

22S 

242

271 

259 

274 

334 

328

265 

233 

205 

188 

222

239 

230 

214 

186 

180

188 

169 

148 

151 

166

157 

151 

144 

146 

148 

139

Mean

168 

104 

80.0

277

68.9 

72.4 

82.2 

172 

1,517 

1,678 

756 

212 

196

427

Sept.

105 

107 

99 

120 

86

81 

86 

131 

108 

104

107 

108 

177 

508 

319

253 

211 

225 

259 

250

233

216 

253 

247 

266

266 

250 

233 

230 

253

Run- off in 

acre-feet

10,310 

- 6,200 

4,920

200,800

4,240 

4,020 

5,050 

10 ,210 

93,290 

99 ,830 

46 ,470 

13,030 

11,680

309,800

» Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
64 TRIBUTARIES ABOVE GREEN RIVER

West Divide Creek below Willow Creek, near Raven, Colo.

Location.- Water-stage recorder, lat. 39°17', long. 107°31', in NEi sec. 14, T. 9 S., R.

 91 W., a quarter of a mile downstream from Willow Creek and 15 miles south of Raven.

Drainage area.- 32.7 square miles.

Records available.- October 1938 to September 1941.

Extremes""^Maximum discharge during year, 876 second-feet May 13 (gage height, 3.27

 feet), from rating curve extended above 320 second-feet; probably no flow at times 

during winter. . . , . 

1938-41: Maximum discharge, that of May 13, 1941; no flow some periods in each 

year.

Remarks.- Records good except those for periods of ice effect, which are fair. No 

records Nov. 10 to Mar. 12. No diversions above station.

Flow Increased above station by diversion from Clear Fork of East Muddy Creek 

(Gunnison River Basin) through Clear Fork ditch and by diversion from Thompson Creek 

(Roaring Fork Basin) through Thompson Creek feeder ditch in the amounts given in the 

following table:

Ditch

Thompson Creek feeder ditch . .

Total......................

Month

July 

May 

June 

July 

Aug.

-

Diversion 

(acre-feet)

479 

52 

494 

120 

10

2,195

Cooperation.- Records of transmountaln diversions to West Divide Creek furnished by 

State engineer.

Discharge, In second-feet, water year October 1940 to September 1941

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.

3.1 

2,7 

2.1 

1.8 

2.9

4.0 

2.6 

2.1 

1.9 

2.2

1.9 

l.S 

1.6 

1.6 

1.5

1.5 

1.5 

1.5 

1.4 

1.4

1.4 

1.1 

1.2 

1.4 

1.4

1.8 

2.2 

1.8 

1.4 

1.6 

1.6

Nov.

1.6 

1.8 

l.S 

1.7 

1.6

1.6 

1.4 

1.5

*1.4

Dec. Jan. Feb.

Month

Oet 

Nov 

Dec

C

Jar 

Fet 

liar 

Apr 

Maj 

Juc 

Jul 

Aug 

Sep

HI

ember 1- 9 ..............................

a lender year

oh 13-31 

^ j

ater year

Mar.

«..3 

1.3 

1.4

1.5 

l.S 

2.2 

2.5 

3.0

s.e

4.5 

5.0 

4.3 

4.5

4.5 

4.5 

4.S 

5.0 

5.2 

5.5

Apr.

6.0 

5.S 

5.6 

5.4 

. 5.6

5.4 

5.4 

5.8 

6.0 

«6.5

6.0 

S.5 

11 

12 

11

11 

7.5 

6.5 

6.0 

7.5

7.5 

6.0 

9.S 

18 

29

42 

52 

55 

58 

76

Secondfoot-days

58.0 

14.4

_

67.1 

497. S 

7,341 

2,861 

591.3 

67.7 

60.9

-

May

101 

118 

176 

199 

176

183 

199 

283 

350 

362

362 

465 

585 

394 

296

273 

300 

289 

222 

170

ISO 

188 

186 

191 

180

173 

170 

152 

142 

137 

134

Maximum

4.0 

l.S

_

5.5 

76 

585 

122 

55 

5.3 

8.0

-

June

122 

113 

111 

107 

107

100 

120 

US 

105 

107

100 

94

ss

88 

94

98 

100 

105 

102 

94

92 

90 

92 

94 

S4

76 

74 

69 

62 

55

July

47 

46 

55 

53 

39

34 

32 

36 

37 

26

22 

21 

16 

13 

12

11 

9.2 

7.7 

S.O 

10

7.4 

6.2 

5.6 

4.S 

6.2

5.9 

5.3 

4.6 

4.1 

3.7 

2.6

Minimum

1.1 

1.4

-

1.3 

5.4 

101 

55 

2.6 

,7 

.5

-

Aug.

2.1 

1.7 

1.5 

1.2 

1.0

1.9 

2.8 

2.8 

4.3 

5.3

3.2 

2.8 

2.3 

1.7 

1.7

2,3 

3.7 

5.3 

3.9 

2.4

1.9 

2.3 

2.1 

1.5 

1.2

.9 

.8 

.8 

.7 

.9 

.7

Mean

1.S7 

1.60

-

3.53 

16.6 

237 

95.4 

19.1 

2.18 

2.03

-

Sept.

0.6 

.6 

.6 

.5 

.5

.6 

.6 

2.1 

1.9 

1.5

1.2 

,9 

3.2 

8.0 

3.0

1.9 

1.5 

1.7 

1.9 

1.4

1.4 

1.4 

2.4 

3.0 

3.5

3.2 

2.6 

2.3 

2.3 

4.6

Run-off In 

acre-feet

115 

29

-

133 

987 

14,560 

5,670 

1,170 

134 

121

-

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 4, Mar. 13 to Apr. 12.
TRIBUTARIES ABOVE GREEN RIVER 65

Rifle Creek near Rifle, Colo.

Location.- Staff gage, lat. 39°37', long. 107°45', In NEi sec. 18, T. 5 S., R. 92 W., 

i mile downstream from West Rifle Creek and 6.8 miles northeast of Rifle.

Drainage area.- 140 square miles.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge observed during year, 180 second-feet my 15 (gage height, 

a.10 feet); minimum dally, 2.7 second-feet Feb. 6.

Remarks.- Records fair. Diversions above station for Irrigation. Some regulation at 

low rlow by power, plant on East Rifle Creek. Staff gage read twice dally.

Cooperation.- Gage-height record and discharge measurements from Oct. 1 to June 30 

furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

B 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

OO

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

40 

11 

10 

9.5 

16

9.5 

S.O 

8.0 

9.0 

8.3

9.0 

8.3 

8.3 

6.9 

6.2

6.9 

6.9 

6.6 

5.5 

6.6

6.9 

6.9 

6.9 

6.2 

7.2

6.2 

9.5 

7.6 

6.9 

18 

22

Nov.

6.6 

6.2 

6.2 

6.2 

6.2

6.2 

6.6 

6.2 

6.2 

6.2

6.2 

6.2 

5.8 

5.0

5.4

5.6 

6.0 

6.2 

6.2 

5.B

5.5 

6.6 

6.0 

6.6 

6.2

5.8 

5.4 

5.0 

4.8 

5.0

Dec.

4.8 

10 

11 

11 

10

10 

10 

12 

9.0 

6.9

8.0 

7.2 

4.2 

4.0 

3 8

4.0 

4.2 

4.6 

*5.0 

5.0

4.8 

4.8 

5.5 

5.0 

5.0

4.5 

4.0 

3.5 

3.5 

5.5 

3.8

Jan.

5.2 

6.6 

8.0 

3.2 

3.5

5.0 

4.8 

4.5 

4.2 

3.2

3.5 

4.8 

3.8 

3.8 

4.5

3.5 

5.0 

4.2 

3.8 

4.8

4.0 

4.2 

4.2 

«4,2 

4.5

4.2 

4.0 

4.2 

4.4 

4,8 

4.5

Feb.

4.8 

4.8 

4.6 

4.4 

4.2

2.7 

3.2 

3.4 

3.8 

4.S

4.8 

4.8 

4.2 

4.2 

4.0

6.6 

7.6 

14 

11 

9.5

8.6 

9.5 

12 

13 

10

7.6

12 

12

Month

Got 

Ho\ 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

HI

alendar year

ater year 1940-4

Mar.

12 

14 

37 

36 

27

22 

21 

18 

16 

18

16 

18 

18 

19 

18

19 

22 

34 

32 

20

28 

19 

30 

22 

21

17 

16 

16 

18 

12 

9.0

Apr.

11 

9.5 

12 

9.5 

14

18 

8.0 

6.9 

6.9 

6.6

9.0 

10 

11 

8.0 

11

9.0 

9.0 

32 

32 

32

34 

34 

35 

34 

36

34 

32 

18 

20 

23

Secondfoot -days

304.8 

178,1 

194.6

_

137.1 

196.1 

645.0 

565.4 

2,676 

1,195 

1,242 

1,013 

726

9,073.1

May

21 

27 

29 

57 

83

57 

44 

24 

44 

50

71 

95 

132 

164 

159

140 

132 

156

143 

110

100 

88 

87 

143 

135

127 

67 

58 

47 

46 

40

Maximum

40 

6.6

12

_

8.0 

14 

37 

36 

164 

49 

62 

41 

35

164

June

33 

30 

30 

42 

44

46 

49 

47 

43 

3S

37 

46 

37 

39 

35

40 

37 

38 

37 

37

37 

44 

43 

42 

43

40 

41 

41 

40 

39

July

37 

42 

42 

38 

43

40 

40 

40 

40 

40

42 

44 

62 

44 

44

38 

40 

41 

52 

41

37 

37 

37 

36 

35

34 

34 

35 

35 

37 

35

Minimum

5.5 

4.8 

3.5

_

3.2 

2.7 

9.0 

6.6 

21 

30 

34 

22 

11

2.7

Aug.

36 

36 

37 

37 

35

36 

38 

36 

37 

36

36 

34 

34 

34 

33

41 

40 

37 

37 

30

29 

29 

25 

22 

22

22 

26 

30 

30 

29 

29

Mean

9.83 

5.94 

6.28

_

4,42 

7.00 

20.8 

18.8 

86.3 

39.8 

40.1 

32.7 

24.2

24.9

Sept.

29 

28 

28 

30 

27

26

27 

27 

35, 

34

28 

27 

33 

26 

26

21 

21 

27 

22 

22

23 

27 

25 

23 

18

17 

14 

11 

12 

12

Run-off In 

acre-feet

605 

353 

386

_

272 

389 

1,280 

1,120 

5,310 

2,370 

2,460 

2,010 

1,440

18,000

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 13-17, 23-30, Dec. 14-18, Jan. 26-29, Feb. 

3,"4, 8.
66 TRIBUTARIES ABOVE GREEN RIVER

East Fork of Rifle Creek near Rifle, Colo.

Location.- Water-stage recorder, lat. 39°04', long. 107°41', in sec. 22, T. 4 S., R. 92 

W., just downstream from Rifle Falls, 7.2 miles upstream from mouth, and 12 miles 

northeast of Rifle.

Drainage area.- 32 square miles.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge during year, 131 second-feet May 13 (gage height, 2.12 feet); 

minimum daily, 24 second-feet Feb. 26-28.

Remarks.- Records good. Flow regulated by power plant Just above station. Several small 

diversions above station for irrigation.

Cooperation.- Gage-height record and discharge measurements from Oct. 1 to June 30 

furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

16

16

IV

18

19

20

21

22

26

Oct.

32

31

30

32

35

33

33

34

34

32

32

32

32

31

32

32

33

32

31

31

51

31

31

32

32

33

34

33

31

32

31

Nov.

32

32

32

32

31

31

31

31

32

32

31

31

29

29

30

31

32

33

33

32

32

32

31

32

31

31

30

31

30

30

~

Dec.

29

30

31

32

31

31

31

31

31

31

31

31

30

29

28

29

30

31

31

31

31

31

32

32

32

32

32

32

33

32

32

Jan.

31

31

31

31

30

30

30

30

30

30

31

31

31

31

31

31

31

31

31

31

30

30

29

29

29

29

29

29

30

29

29

Feb.

29

ES

2B

29

29

29

28

28

28

28

29

2S

28

26

26

26

26

26

26

26

26

26

26

25

26

24

24

24

_

-

-

Month

Calendar year ......................

April. .....................................

May...................................... .

July .......................................

September. .................................

Water year 1940-41 ......................

Mar.

28

31

31

31

31

30

30

31

32

31

32

31

32

32

31

32

31

31

31

31

29

30

31

30

31

31

30

30

30

30

30

Apr.

31

31

31

31

31

31

31

31

31

32

31

32

32

29

29

26

25

28

29

29

29

39

29

30

31

31

33

34

34

34

-

Second 

foot-days

995

937

960

-

936

915

1,166

14,462

May

35

35

38

41

42

43

44

43

45

50

65

84

105

123

115

102

103

112

110

100

98

100

96

96

94

85

78

77

76

73

71

Maximum

35

33

33

-

31

123

43

123

June

6S

65

65

64

65

64

67

65

64

64

62

60

60

60

62

63

60

58

57

56

55

56

59

58

58

57

56

56

54

54

-

Minimum

3C

2S

2E

Zl

3E

34

24

July

53

51

51

48

47

46

45

44

44

44

46

46

46

46

46

46

44

43

43

44

43

43

43

44

45

44

44

45

45

44

44

- Aug.

44

44

42

42

41

41

41

41

41

41

41

42

41

41

42

43

43

42

41

40

40

38

38

37

37

38

38

38

38

38

37

Mean

32.1

31.2

31.0

-

30.2

76.7

3S.9

39.6

Sept.

38

 37

37

38

3S

3S

38

3S

38

38

38

40

43

43

42

41

41

42

42

41

41

41

40

38

36

34

35

36

37

37

Run- off in 

acre-feet

1,970

1,860

1,900

-

1,860

1,S90

2,310

28, 670
TRIBUTARIES ABOVE GREEN RIVER 67 

Plateau Creek near Ccllbran, Cole.

Location.- Water-stage recorder, lat. 39°15', long. 107°50', in NWt sec. 24, T. 93., 

R. 94 W., 7 miles east of Collbran.

Drainage area.- 83 square miles.

Records available.- August 1921 to September 1927 (monthly discharge) and October 1933 

to September 1941 in reports of U. S. Geological Survey. August 1921 to September 

1941 in reports of State engineer.

Average discharge.- 20 years, 100 second-feet.

Extremes.- Maximum discharge during year, 1,520 second-feet nay 26 (gage height, 4.67 

feet), fron rating curve extended above 1,100 second-feet; minimum daily, 8.2 secondfeet Sept. 6.

1921-41: Maximum discharge, £,800 second-fest May 28, 1922 (gage height, 6.72 

feet, site and datu-n then in use), from rating curve extended above 1,300 secondfeet; minimum daily, 3 second-feet Sept. 21, 19£6.

Remarks.- Records good except those for November to Marcn, which are fair. Five snail 

diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

66 

59 

41 

93

88 

55 

48 

50 

50

44 

40 

37 

33 

29

26 

24 

22 

21 

20

19 

18 

18

17 

17

17 

22 

21 

19 

18 

19

Nov.

' 15.5 

(*)

Dec.

 14.5

Jan.

. 14.0 

(*}

Feb.

15 

14 

13 

12 

14

15 

15 

14 

15

15

14 

:5

16 

15 

14

13 

14 

14 

15

16 

16 

14 

15 

*15

15 

19 

17

"

Month

Oc t 

S!oi 

Dec

I

Jar 

Pel 

Mai 

Apj 

Ma; 

Ju 

Ju3 

Auf 

Sej

1

alendar year 19' 0. .....................

y. .....................................

just....................................

later year 1940-'

Mar.

15 

15 

14 

16 

14

14 

14 

16 

13 

12

13 

14 

13 

12 

12

13 

13 

14 

15 

16

18 

18 

19 

18 

16

16 

16 

17 

17 

18 

20

Apr.

24 

22 

21 

21 

22

22 

21 

20 

21 

23

23 

26 

27 

24 

23

24 

25 

23 

22

21

21 

23 

26 

33 

38

50 

71 

89 

103 

117

Secondfoot -days

1,112 

465 

449.5

21,002.5

434 

413 

471 

1,026 

21 ,723 

12,973 

1,524 

639 

936.3

42,170.8

May

130 

172 

1S6 

263 

215

205 

218 

282

396 

562

750 

864 

1,030 

1,070 

1,030

914 

1,O30 

1,140 

970 

616

680 

828 

942 

1,060 

1,060

1,090 

956 

770 

760 

S04 

740

Maximum

93

7SO

19 

20 

117 

1,140 

S52 

118 

61 

137

1,140

June

710 

690 

616 

592 

600

520 

852 

632 

464 

414

379 

335 

368 

426 

402

438 

432 

478 

450 

402

379 

357 

335 

374 

308

263 

242 

208 

172 

140

July

118 

104 

93 

66 

86

79 

72 

78 

71 

65

55 

49 

49 

54 

45

43 

35 

33 

31 

29

24 

23 

20 

20 

32

27 

25 

22 

19 

19 

IS

Minimum

17

4.8

12 

12 

20 

130 

140 

18 

15 

8.2

-

Aug.

18 

17 

17 

18 

20

20 

20 

21 

23 

20

16 

17 

16 

17 

21

61 

42 

31 

21 

17

16 

16 

20 

18 

17

16 

16 

15 

18 

18 

16

Mean

35.9 

15.5 

14.5

57.4

14.0 

14.8 

15.2 

34.2 

701 

433 

49.2 

20.6 

31.2

116

Sept.

16 

14 

12 

11 

9.2

8.2 

8.9

17 

15 

16

11 

10 

43 

' 137 

46

25 

18 

26 

35 

28

22 

28 

43 

42 

56

66 

52 

38 

34 

49

Run-off In 

acre-feet

2,210 

922 

892

41,670

861 

819 

934 

2,040 

43 ,090 

25 ,740 

3,020 

1,270 

1,860

83,660

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 1 to Pet. 24, Mar. 10.
68 TRIBUTARIES ABOVE OREEN RIVER

Plateau Creek near Cameo, Colo.

Location.- Water-stage recorder, lat. 39°11', long. 108°16'. in SWi sec. 18, T. 10 S., 

 K. 97 W., 1.1 miles upstream from mouth and 4 miles northeast of Cameo.

Drainage area.- 604 square miles.

Records available.- April 1936 to September 1941.

Extremes.- Maximum discharge during year, 3,620 second-feet May 14 (gage height, 7.60 

reetj; minimum dally, 54 second-feet Aug. 2, 3.

1936-41: Maximum discharge, that of May 14, 1941; minimum daily, 16 second-feet 

July 14, 15, Aug. 17, 18, 1940.

Remarks.- Records excellent. Many diversions above station for irrigation.

Rating tables, water year 1940-41 (gage height, In feet, and discharge,

In second-feet) 

(Shifting-control method used Feb. 25 to May 14)

Oct. 1 to May 9 May 10 to Sept. 30

1.6 50 2.0 120 2.8 390 1.4 50 2.2 225 4.1 1,035 

1.7 65 2.2 170 4.5 1,390 1.6 80 2.5 330 6.0 2,260 

1.8 82 2.5 265 5.2 1,380 1.9 140 3.1 570 8.0 3,730

Discharge, in second-feet, water year October 1940 to September 1941

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.

152 

122 

120 

106 

182

230 

155 

123 

113

118

110 

104 

100 

93 

39

66 

60 

77 

72 

70

68 

67 

67 

65 

65

70 

125 

39 

34 

86 

34

HOT.

79 

75 

93 

112 

80

36 

91 

91 

91 

93

34 

84 

62 

77 

34

36 

39 

39 

91 

37

84 

36 

87 

79 

34

32 

75 

34 

32 

82

Dec.

84 

80 

77 

77 

75

75 

75 

74 

74 

79

77 

77 

72 

59 

59

64 

110 

116 

108 

100

116 

106 

108 

114 

104

128 

132 

125 

93 

SO 

80

Jan.

79 

79 

77 

75 

106

106 

96 

104 

102 

89

93 

91 

93 

103 

96

100 

106 

93 

39 

39

102 

100 

93 

77 

79

72 

75 

72 

70 

70 

70

Feb.

72 

65 

34 

SO 

77

80 

84 

84 

79 

72

75 

120 

110 

91 

37

100 

89 

93 

116 

91

104 

104 

95 

104 

160

96 

75 

82

Month

Oct 

Nov 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

JUE 

Jul 

Aug 

Se]

n

uary

11.....................................

ater year 1940-4

Mar.

96 

104 

102 

34 

69

39 

77 

77 

67 

67

67 

74 

64 

102 

96

82 

62 

93 

104 

112

110 

122 

153 

212 

155

132 

113 

113 

120 

125 

125

Apr.

162 

155 

162 

165 

170

162 

136 

125 

132 

165

162 

173 

221 

158 

170

162 

182 

155 

150 

145

152 

150 

152 

191 

237

262 

368 

434 

534 

463

Secondfoot-days

3,132 

2,554 

2,303

48,607

2,751 

2,569 

3,283 

6,232 

52,253 

21,972 

2,775 

2,253 

3,927

106,559

May

534 

539 

1,050 

1,370 

1,290

1,140 

1,040 

1,260 

1,690 

1,990

2,270 

2,630 

3,170 

3,020 

2,430

1,680 

1,970 

2,160 

2,170 

1,630

1,460 

1,420 

1,410 

1,560 

1,580

1,610 

1,730 

1,550 

1,460 

1,330 

1,290

Maximum

230 

112 

132

1,340

103 

160 

212 

534 

3,170 

1,220 

163 

112 

292

3,170

June

1,220 

1,140 

1,060 

965 

955

925 

945 

1,090 

1,020 

945

372 

640 

336 

306 

777

750 

723 

750 

732 

664

564 

513 

442 

514 

442

374 

316 

238 

250 

207

July

168 

155 

136 

124 

124

122 

114 

110 

106 

104

94 

66 

34 

82 

73

64 

77 

74 

71 

77

70 

63 

65 

62 

62

64 

70 

62 

60 

62 

53

Minimum

65 

62 

59

16

70 

65 

67 

125 

534 

207 

53 

54 

60

54

Aug.

56 

54 

54 

53 

56

62 

64 

66 

70 

104

34 

76 

70 

66 

66

106 

100 

112 

36 

77

77 

73 

76 

71 

76

65 

62 

62 

62 

70 

66

Sept.

66 

68 

60 

60 

60

60 

64 

77 

76

74

76 

74 

112 

292 

171

134 

118 

124 

136 

126

120 

236 

207 

222 

195

207 

201 

171 

160 

ISO

 Run-off In 116811 acre-feet

103 6,310 

35.1 5,070 

90.4 5,560

133 96,410

33.7 5,460 

91.3 5,100 

106 6,510 

203 12,360 

1,636 103,600 

732 43,580 

39.5 5,500 

72.3 4,430 

131 7,790

292 211,300
TRIBUTARIES ABOVE GREEN RIVER 69

Buzzard Creek near Helberger, Colo.

Location.- Water-stage recorder, lat. 39°17', long. 1Q7°43' , in NEt sec. 13, T. 9 S., R. 

93 W. , 1.1 miles downstream from Hightower ranger station and 3 miles east of 

Heiberger.

Drainage area.- 76.5 square miles.

Records available.- April 1936 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 968 second-feet May 13 (gage height, 5.05 feet), 

from rating curve extended above 500 second-feet; minimum daily, 0.1 second-foot Aug. 

1-7, 9, 10, Sept. 11, 12.

1936-41: Maximum discharge, that of May 13, 1941; no flow at times in most years.

Remarks . - Records good except those below 10 second-feet, which are fair. One diversion 

above station to West Divide Creek for irrigation.

Discharge, In second-feet, water* year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

11 

6.5 

6.8 

6.0 

6.8

19 

12 

6.8 

5.8 

5.5

5.0 

3.6 

3.1 

2.8 

2.9

2.2 

2.2 

2.0 

1.7 

1.5

1.4 

1.3 

1.2 

1.3 

1.1

1.6 

2.2 

2.8 

2.8 

2*8 

2.8

NOT.

2.6 

2.4 

2.6 

3.5 

3.4

3.2 

3.5 

3.4 

3.5 

3.5

2.7 

2.8 

2.8 

2.5 

2.4

2.4 

2.6 

3.0 

3.4 

3.4

2*8 

2.8 

*2.8 

2.8 

2.9

2.8 

2.6

2.2 

2.1

Dec. Jan. Feb.

Month

Oct 

Noi 

Bee

C

Jar 

Pel 

Mai 

Api 

Maj 

Jui 

Ju]

AU£

Se 

1

alendar year

"11.. ..

Ly. .....................................

fater year

liar. Apr.

e

7 

6 

7 

8

7 

6 

6 

7 

S

»9 

15 

14

17 

27

29 

25 

21 

18 

20

21 

20 

25 

43 

54

74 

87 

105 

101 

104

Secondfoot-days

134.5 

85.8

-

899 

9,065 

2,436 

139.8 

16.4 

87.4

-

May

107 

127 

195 

372 

264

233 

257 

348 

416 

468

488 

604 

624 

504 

334

288 

357 

354 

302 

225

248 

257 

242 

230 

211

216 

206 

172 

146 

150 

140

Maximum

19 

3.5

-

105 

624 

131 

17 

2.1 

14

-

June

12S 

125 

122 

114

115

112 

131 

130 

98 

90

79 

67 

73 

69 

67

77 

86 

90 

91 

93

81 

60 

54 

7S 

54

40 

34 

31 

26 

21

July

17 

15 

12

11 

11

11 

9.2 

7.0 

6.1 

5.S

4.8 

4.4 

3.4 

2.6 

3.8

3.2 

3.0

3.0 

1.6 

1.0

.8 

 6 

.5 

.4 

.3

.3 

.2 

.2 

.2 

.2 

.2

Minimum

1.1 

2.1

-

6

107 

21 

.2

.1 

.1

-

Aug.

0.1 

.1 

.1 

.1

.1

.1 

.1 

.2 

.1 

.1

1.4 

1.1 

.5 

.4 

.3

.6 

1.7 

2.0 

2.1 

1.2

.8 

.8 

.6 

.4 

.2

.2

.2 

.2 

.2 

.2 

.2

Mean

4.34 

2.86

-

30.0 

292 

81.2 

4.51 

.53 

2.91

-

Sept.

0.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2

.2

.1 

.1 

.2 

14 

9.2

3.0 

1.8 

1.4 

1.7 

1.8

1.5 

1.8 

4.4 

7.4

7.7

9.6 

5.S 

6.7 

4.4 

2*8

Run-off In 

acre-feet

267

170

-

1,780 

17,980 

4.830 

277 

33 

173

-

* Winter discharge measurement made on this day.

Note.- No gage-height record July 22 to Aug. 8; discharge computed on basis of recorded range In 

stage and records for station near Collbran. Stage-discharge relation affected by Ice Nov. 11-19, 

23-30, Apr. 1-14.
70 TRIBUTARIES ABOVE GREEN RIVER 

Buzzard Creek near Collbran, Colo.

Location.- Water-stage recorder, lat. 39°16', long. 107°52', In sec. 14, T. 93., R. 94 

W., hair a mile upstream from Brush Creek and 7 miles east of Collbran.

Drainage area.- 139 square miles.

Records available.- August 1921 to September 1927 (monthly discharge only) and October 

.1933 to September 1941 In reports of U. S. Geological Survey. August 1921 to September 

1941 In reports of State engineer.

Average discharge.- 20 years, 53.5 second-feet.

Extremes.- Maximum discharge during year, 1,630 second-feet May 14 (gage height, 7.80 

 feet), from rating curve extended above 650 second-feet; minimum daily, 0.7 secondfoot Aug. 14.

1921-41: Maximum discharge, that of May 14, 1941; minimum, 0.1 second-foot Aug. 

27, 1934 (gage height, 0.76 foot).

Remarks.- Records good except those for periods of Ice effect, which are fair. Diverslons above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

10 

7.8 

7.5 

12

27 

21 

13 

10 

10

8.3 

7.8 

5.5 

4.8 

4.1

3.9 

2.9 

2.4 

2.4 

2.4

2.2 

2.4 

2.4 

2.6 

2.5

3 >7 

5.5

6.0 

5.5 

5.0 

5.0

NOT.

4.3 

4.4 

4.1 

5.3 

5.0

4.8 

6.5 

7.5 

6.8

7.2

5.3 

4.8 

4.2 

3.9

3.9

4.1 

4.6 

4.8 

5.3 

5.3

4.8 

4.4 

*4.1 

4.2 

4.4

4.0 

3.7 

3.4 

3.2 

3.2

Dec.

3.4 

3.2 

3.9 

2.8 

2.8

2.0 

2.8 

2.5 

2.5 

2.6

2.5 

2.3 

2.1 

2.0 

1.9

2.0 

2.3 

2.6 

2.7 

2.5

2.3

2.3 

2.4 

2.6 

2.9

2.8 

2.7 

2.8 

3.0 

3.1 

3.1

Jan.

3.0 

2.7 

2.4 

2.1 

2.0

2.2

2.1 

2.4 

2.S 

2.5

2.5 

2.4 

2.5 

2.6 

2.7

2.6 

2* 5 

2~.4 

2.4 

2.5

2.6 

2.7 

2.6 

2.4 

2.5

2.4 

2.4 

2.5 

*2.6 

2.8 

2.9

Feb.

2.8

2.3 

2.3 

2.3

2.3 

2.3 

2.5 

2.6 

2.8

3.0 

2.9 

2.9 

3.0 

3.0

3.1 

3.0 

3.1 

3.2 

3.0

3.1 

3.2 

3.2 

3.3 

*3.4

3.5 

4.0 

4.8

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mar 

Apr

*a3

Juu 

Jul 

Aug 

Sej

H

alendar year 194 0... ...................

list... ................................

ater year 1940-4 ^

Mar.

5.1 

5.0 

4.5 

4.8 

4.5

4.3 

4.4 

4.5 

4.4 

4.2

4.3 

4.0 

4.2 

*4.6 

4.1

4.0 

4.5 

5.4 

6-2 

7.0

8.0 

8.2 

7.7 

7.4 

7.2

8.0 

8.6 

14 

24 

24 

25

Apr.

42

25 

24 

24 

42

2S 

21 

18 

29 

50

*46 

82 

74 

83 

107

113 

92 

72 

57 

56

50 

48 

72 

112 

113

144 

189 

271 

285 

251

Secondroot-days

227.6 

142.0 

SI. 9

9,148.3

77.4 

83.4 

236.1 

2,620 

15, 850 

3,584 

268.1 

101.2 

157.9

23,429.6

May

256 

310 

530 

910 

572

450 

420 

533 

66S 

770

794 

S96 

1,080 

1,030 

746

551 

578 

611 

542 

325

315 

365 

340 

342 

325

315 

340 

276 

232 

216 

212

Maximum

27 

7.5 

3.9

280

3.0 

4.S 

25 

285 

1,080 

210 

20 

13 

17

1,080

June

200 

185 

180 

178 

180

185 

1S7 

210 

162 

151

142 

115 

109 

107 

103

109 

110 

110 

109 

109

104 

93 

77 

85 

89

58 

44

37 

31 

25

July

20 

IS 

15 

13 

13

13 

13 

13 

11 

10

9.8 

8.6 

7.8 

7.S 

8.3

8.6 

8.3 

8.3 

S.O 

8.3

8.6 

7.5 

6.2 

5.0 

3.9

3.1 

2.6 

1.9 

2.5 

2.1 

1.9

Minimum

2.2 

3.2

1.9

.4

2.0 

2.3 

4.0 

18 

212 

25 

1.9 

.7 

1.1

7

Aug.

1.8 

1.9 

1.7 

1.6 

1.0

.8 

1.1 

2.S 

1.6 

.9

1.2 

.9 

.9 

.7 

1.0

3.7 

7.0 

13 

11 

9.S

8.3 

6.5 

4.1 

3.1 

2.4

1.9 

2.2 

1.9 

2.1 

2.2 

2.1

Mean

7.34 

4.73 

2.64

25.0

2.50 

2.98 

7. 52 

87.3 

511 

119 

S.65 

3.26 

5.26

64.2

Sept.

1.7 

1.5 

1.4 

1.2 

1.2

1.5 

1.7 

1.9 

1.6 

1.6

1.2 

1.1 

2.5 

14 

17

8.3 

5.3 

4.6 

3.9 

3.2

3.1 

4.1 

6.2 

11 

11

11 

10 

7.8 

9.5 

7.8

Run-off In 

acre-feet

451 

2S2 

162

18,150

154 

165 

458 

5,200 

31,440 

7,110 

532 

201 

313

46,480

* -finter discharge measurement 

Note.- Stage-discharge relatloi 

Mar. 16-2G, and Apr. 5.

nade on this day.

L affected by Ice Sov. 12, 13, 23, 24, 26, 27, Dsc. 12 to Mar. 13,
TRIBUTARIES ABOVE GREEK RIVER 71

Big Creek below Bonham Reservoir, near Col]bran, Colo.

Location.- Water-stage recorder and Clppoletti weir, lat. 39°06', long. 107°54', in S££ 

sec. 9, T. 11 S., R. 94 W., at outlet of Bonham Reservoir, .lust upstream from Atkinson Creek and 10 miles southeast of Collbran.

Drainage area.- 6.1 square miles.

Records available.- May to September 1941.

Extremes.- Maximum discharge during period, 46 second-feet May 19 (gage height, 1.00 

 foot); no flow July 10-12.

Remarks.- Records excellent. Complete regulation by Boaftam Reservoir (capacity, 1,450 

acre-feet).

Cooperation.- Gage heights and results of discharge measurements May 17 to June 30 furnished by Bureau of Reclamation.

Rating table, period Hay 17 to Sept, 30, 1941 (gags height, IB feet,, and 

discharge, In second-feet)

0

1.6

5.0

0.5

,4 

.5

o.e 1,0 34.5

43.5

Discharge, In second-feet, water year October 1940 to September 1941

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. SOT. Dec. Jao. Feb.

Month

Ocl 

Hoi 

Dec

C

Jai 

Fet 

Ha] 

Api

Ju: 

Ju] 

kai 

Se

[

!alendar year

*il

Ly..... .................................

he peric d... .......... .................

Mar. Apr.

Secondfoot-days

629 

994 

702.9 

837 

331.4

-

May

45 

45 

46 

46

46 

46 

42 

39 

39

39 

40 

39 

39 

39 

39

Maximum

46 

40 

31 

31 

17

-

June

40 

40 

40 

40 

39

39 

40 

40 

40

39

39 

33 

31 

31 

31

31 

30 

29 

29 

29

29 

29 

29 

29 

29

29 

29 

26 

27 

26

. July

25 

£4 

24 

24 

24

24 

27 

22 

7.9 

0

0 

0 

13 

22 

18

18 

18 

26 

30 

26

27 

30 

30 

30 

30

30 

31 

31 

31 

31 

29

Minimum

39 

26 

0 

16 

1.5

-

*"«'

28 

88 

31 

31 

31

31 

31 

31 

31 

30

30 

30 

30 

29 

28

2S 

28 

27 

27 

£6

26 

26 

25 

25 

24

23 

22 

21 

21 

20 

18

Moan

41.9 

33.1 

22.7 

27.0 

11.0

-

Sept.

16 

15 

12 

S.O 

4.3

3.6 

2.2 

1.5 

4.6 

32

12 

13 

14 

14 

13

11 

10 

10 

12 

13

14 

14 

16 

17 

17

17 

13 

8.4 

7.7 

6.1

Run- off In 

acre-feet

1,250 

1,970 

1,390 

1,660 

657

6,930
72 TRIBUTARIES ABOVE GREEN RIVER

Bull Creek near Molina, Colo.

Location.- Staff gage, lat. 39°08', long. 108°09', In NEi sec. 6, T. 11 S., R. 95 W., 4 

 miles upstream from mouth and 4 miles south of Molina. Altitude of gage is 7,100 feet 

above mean sea level (by barometer).

Drainage area.- 9.7 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 100 second-feet May 18 (gage height, 

3.90 feet), from rating curve extended above 71 second-feet; minimum daily, 1.5 secondfeet Apr. 4, 9.

Remarks.- Records poor. Gage read twice daily. Regulation by a few small reservoirs. 

Many small diversions above and below station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Apr. 1 to Aug1 . 31 

rurnisnea by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7

e

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

25 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan. Feb.

Month

Oct 

Hot 

Dec

C

Jar 

Pel 

Mar 

Apr 

May 

Jvm 

Jul 

Aug 

Sep

1

alendar year

he perio3

Mar. Apr.

1.9 

1.9 

1.9 

1.5 

1.7

1.9 

1.9 

1.9 

1.5 

1.7

1.9 

2.2 

1.9 

1.9 

1.9

1.9 

2.6 

1.9 

1.9 

2.8

1.9 

1.7 

1.7 

1.9 

1.9

1.9 

2.2 

3.1 

3.7 

4.0

Secondfoot-days

62.7 

1,817.4 

1,040 

481 

342.3 

287.3

-

May

4.7 

6.0 

6.7 

13 

10

13 

16 

18 

25 

31

50 

70 

72 

78 

76

7S 

84 

95 

92 

S4

82 

79 

79 

90 

66

84 

66 

S6 

81 

74 

66

Maximum

4.0 

95 

58 

IS 

16 

13

-

June

58 

54 

54 

50 

48

50 

52 

56 

46 

36

30 

24 

24 

24 

24

24

26 

31 

31 

32

32 

33 

32 

29 

29

28 

25 

20 

20

18

July

18 

18 

18

17 

17

17 

16 

16 

16 

17

16 

16 

16 

16 

16

16 

16 

16 

16 

15

13 

13 

13 

13 

13

13 

15

15 

16 

15 

13

Minimum

1.5 

4", 7 

18 

13 

8.2 

6.7

"

Aug.

15

14 

13 

13 

13

13 

14 

14 

16 

15

13

12 

11 

11 

11

11 

11 

11 

9.6 

8.6

8.8 

8.S 

S.5 

8.5 

8.5

S.5 

S.5 

S.2 

8.2 

8.2 

S.2

Mean

2.09 

58.6 

34.7 

15.5 

11.0 

9.58

~

Sept.

8.2 

S.2 

8.2 

S.2 

10

11 

11 

11 

11 

9.6

9.9 

11 

11 

9.3 

9.6

9.3 

9.6 

10 

11 

9.6

9.3 

13 

12 

10 

10

8.5 

7.3 

6.7 

6.9 

6.9

Run-off In 

acre-feet

124 

3,600 

2,060 

954 

679 

570

7,990
TRIBUTARIES ABOVE GREEN RIVER 73

Coon Creek near Mesa, Colo.

Location.- Staff gage, lat. 39°07', long. 108°08', in NEi sec. 8, T. 11 S., R. 96 W., 3 

miles south of Mesa. Altitude of gage, 6,910 feet (by barometer).

Drainage area.- 10.0 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 37 second-feet May 13 (gage height, 

 1.86 reet), from rating curve extended above 17 second-feet; minimum daily, 0.8 secondfoot Apr. 8, 19.

Remarks.- Records fair. Gage read twice daily. Plow regulated by a few small reservoirs 

on Headwaters. One small diversion above station.

Cooperation.- Gage heights and results of discharge measurements Apr. 1 to Aug. 31 furnisnea by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. NOT. Dec. Jan. Feb.

Month

Dot 

NOM 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sep

1

alendar year

Tie perlc a. ............................

Mar. Apr.

1.3 

1.2 

1.2 

1.2 

1.2

1.2 

1.1 

.8 

1.2 

1.3

1.4 

1.6 

1.5 

1.3 

1.3

1.3 

1.3 

1.1 

.8 

.9

1.3 

1.1 

1.1 

1.3 

1.4

1.7 

1.8 

3.6 

3.6 

3.1

Secondfoot-days

44.2 

, 591.7 

345.9 

204.8 

134.5 

95.9

-

May

3.6 

4.1 

5.2 

10 

7.6

8.6 

9.6 

13 

16 

20

23 

26 

31 

29 

25

23 

26 

23 

22

17

20 

21 

26 

23 

24

26 

25 

22 

20 

19 

18

Maximum

3.6 

31 

21 

9.6 

7.4 

7.4

-

June

17 

16 

15 

14 

14

14 

21 

16 

14 

14

13 

12 

12 

11 

11

10 

9.8 

9.1 

8.3 

8.6

9.3 

10 

9.8 

9.8 9.3-

8.8

8* 3

7.6 

6.7 

6.5

July

6.5 

6.1 

6.1 

5.7 

5.4

5.2 

4.8 

4.6 

4.6 

4.6

5.9 

5.9 

5.4 

5.2 

5.4

6.1 

6.1 

6.3 

6.7 

7.0

8.1 

5.9 

9.6 

9.1

9.1

9.1 

8.3 

8.1 

8.1 

7.9 

7.9

Minimum

.8 

3.6 

6.5 

4.6 

1.4 

1.3

-

Aug.

7.4 

7.4 

7.0 

7.0 

6.7

6.5 

6.5 

6.5 

6.3 

6.5

5.9 

4.2 

3.6 

3.3 

4.6

4.6 

4.6 

4.2 

3.3 

2.6

2.2 

2.2 

1.9 

1.9 

1.5

1.4 

1.6 

2.4 

3.0 

3.1 

4.6

Mean

1.47 

19.1 

11.5 

6.61 

4.34 

3.20

-

Sept.

3.1 

2.8 

3.0 

2.7 

2.8

2.8 

3.3 

3.8 

3.3 

3.4

4.1 

4.4 

7.4 

1.1 

4.1

2.0 

1.3 

3.6 

2.8 

2.0

1.8 

5.9 

2.8 

1.9 

2.0

3.3 

2.6 

2.5 

2.5 

2.5

Run-off In 

acre-feet

88 

1,170 

686 

406 

267 

190

2,810
74 TRIBUTARIES ABOVE GREEN RIVER

Taylcr Park Reservoir at Taylor Park, Colo.

Location.- Steff gage, lat. 3S°49', long. 106°36', at dam In sec. 16, T 14 S., R. 83 

W.; on Taylor River, Just downstream from Taylor Park and 17 miles northeast of 

Almont, Colo. Datum of gage is 9,187 feet above mean sea level (Bureau of Reclamation bench mark), gage readings have been redaced to elevations above mean sea 

level.

Records available-- October 1938 to September 1941 m reports of Geological Survey. 

September 1937 to September 1H3S in files of Bureau of Reclamation.

Extremes.- Maximum contents observed during year, 107,500 acre-feet July 13 (elevation, 

9,330.60 feet); minimum, 10,980 acre-feet Oct. 1 (elevation, 9,246.06 feet).

1938-41: Maximum contents observed, 108,880 acre-feet May 31, 3.939 (elevation, 

9,331.25 feet); minimum, 9,980 acre-feet Sept. 20-22, 1940 (elevation, 9,243.55 feet).

Remarks.- Dam completed by Bureau of Reclamation In September 1937. Capacity of reser- 

 voir, 106,230 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 Gunnlson River Basin. 

Figures given herein are of usable contents.

Cooperation.- Records furnished bj- Uncompahgre Valley Water Users' Association.

Elevation and contents, water year Octo'oer 1&40 to September 1941

Date

Bee. 31...............

Calendar year 1940..

Water year 1940-41..

Elevation 

(feet)

9 253 2

9,263.5

-

9 27i 1

9 279 45

-

Contents 

(acrefeet)

20,290

-

-

Change in 

contents 

during 

Eonth 

(acre-feet)

+2,700

-11,750

+30,520

+8S.5SO
TRIBUTARIES ABOVE GREEN RIVER 75

Taylor River below Taylor Park Reservoir, Cclo.

Location.- Water-stage recorder, lat. 38°49', long. 106°36', in sec. 24, T. 14 S., R. 83 

W., a quarter of a mile downstream from Taylor Park Reservoir Dam and 16 miles northeast of Almont.

Drainage area.- 156 square miles.

Records available.- October 1938 to September 1941. June 1929 to August 1934, summation 

or records for "Taylor River, Texas and Willow Creeks at site at Taylor Park would be 

practically equivalent.

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

gooa. F2ow regulated by Taylor Park Reservoir (capacity, 106,000 acre-feet). One 

small diversion from Willow Creek above reservoir.

Cooperation.- Gage-height record and results of five discharge measurements furnished by 

Uncoapahgre Valley Water Users' Association.

Discharge, in second-feet, water year October 1940 to September 1941

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 

2S 

29 

30 

31

Oct.

63 

63 

63 

55 

52

52 

52 

40 

37 

31

22 

20 

20 

20 

20

51 

S.6 

S.6 

S.6

S.6

8.6 

S.6 

S.6 

9,3 

9.3

9.3 

9.3 

9.3 

9.3 

9.3 

9.3

Nov.

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10

Dec.

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

10 

10

Jan.

11

11 

11 

11

11

11 11 

11 11 11

11 

11 

11 11 11

11 

11 11 11 

11

11 

11 11 11 

11

11 11 11 

11 11 

11

Feb.

11 

11 

11 

11 

11

11

11 

11 

11 

11

11

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11

11

Month

Oct 

Hoi 

Dec

C

Jar 

Fel 

Mai 

Api

MR}

Jui 

Ju] 

Au,. 

Sej

7

Jalendar year 194 0.......... ............

'11

y.. ....................................

Fater year 1940-4

liar.

12 

12 

12

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

12 

12 

12

Apr.

13 

13 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

13 

13 

13

13 

13 

13 

13 

13

14 

14 

14 

14 

14

14 

14 

14 

14

14

 Secondfoot-daya

795.6 

300 

310

47,320.6

341 

308 

372 

400 

746 

774 

5,214 

10,324 

14,727

34,611.6

May

14 

14 

14 

14 

14

14 

14 

14 

14 

14

16 

16 

18

le

20

20 

22 

24 

26 

28

30 

35 

35 

35 

35

35 

35 

35 

35 

44 

44

Mflylnmm

63

10 

10

682

11 

11 

12 

14 

44 

44 

265 

610 

754

754

June

44 

38 

26 

26 

26

26 

26 

22 

32 

30

20 

21 

23 

27 

30

32 

32 

27 

24 

22

20 

16 

21 

22 

22

25 

24 

24

23 

23

July

23

49 

70 

70 

69

67 

54 

67 

172 

229

250 

262 

265 

262 

247

232 

226 

213 

210 

232

229 

208 

194 

1S6 

198

1S2 

172 

161 

146 

139 

130

Minimum

S.6 

10 

10

0

11 

11 

12 

13 

14 

16 

23 

124 

150

8.6

Aug.

124 

159 

241 

294 

329

3S5 

405 

368 

343 

340

340 

322 

280 

287 

287

280 

280 

280 

277 

277

277 

277 

274 

274 

277

336 

445 

501 

560 

595 

610

Mean

25.7 

10.0 

10.0

131

11.0 

11.0 

12.0 

13.3 

24.1 

25. S 

168 

333 

491

94. S

Sept.

615 

600 

575 

650 

704

69 S 

635 

650 

748 

748

754 

754 

754 

754 

698

580 

565 

457 

409 

371

354 

287 

250 

189 

163

157 

154 

152 

150 

152

Run-off In 

acre-feet

1,580 

595

615

94,850

676 

611 

738 

793 

1,480 

1,540 

10,340 

20,480 

29,210

68,660

Hote.- Ho gage-height record Hov. 1 to May 29; discharge computed on baai 

easureaient and records of release from Taylor Park Reservoir.

of one discharge

461676 O-42-6
76 TRIBUTARIES ABOVE GREEN RIVER

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, 800 feet upstream from confluence with East River. Datum of gage is 

8,011.98 feet above mean sea level, adjustment of 1912.

Drainage area.- 440 square miles.

Records available.- July 1910 to September 1931 and October 1933 to September 1941 in 

reports or U. S. Geological Survey. July 1910 to September 1941 in reports of State 

engineer.

Average discharge.- 31 years, 355 second-feet.

Extremes.- Maximum discharge during year, 752 second-feet Sept. 5 (gage height, 2.90 

feet); minimum daily, 26 second-feet Feb. 22, 24, 25.

1910-41: Maximum discharge, 3,760 second-feet June 9, 1920 (gage height, 5.0 feet), 

from rating curve extended above 2,300 second-feet; minimum before storage began in 

Taylor Park Reservoir, 50 second-feet several days In August 1913 (gage height, 1.2 

feet); minimum daily, 24 second-feet Mar. 12, 1938.

Remarks.- Records good except those for period Nov. 12 to Mar. 31, which are fair. Flow 

partly regulated by Taylor Park Reservoir (capacity, 106,000 acre-feet), 24 miles 

above station. Diversions from tributaries above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

35

26 

27 

28 

29 

30 

31

Oct.

137 

130 

124

US 

118

137 

124 

118 

100 

98

S6 

81 

76 

76 

74

78 

72 

47 

47 

47

47 

47 

47 

47 

47

49 

53 

50 

49 

50 

47

Nov.

50 

52 

54 

54

41

54 

58 

58 

61 

58

47 

47 

46 

48 

52

58 

64 

#67 

63 

54

58 

56 

56 

55 

52

50 

49 

50 

51 

50

Dec.

50 

47 

45 

46 

45

44 

45 

43 

43 

45

45 

44 

43 

42 

41

43 

43 

45 

46 

47

46 

44 

43 

44 

45

44 

43 

42 

44 

45 

45

Jan.

44 

43

40 

40 

41

42 

41 

40 

40 

38

40 

42 

43 

44 

43

41 

42 

41 

40 

40

42 

*44

43 

41 

40

39 

37 

36 

38 

40 

40

Feb.

40 

39 

36 

34 

33

33 

35 

36 

37 

39

40 

40 

40 

40 

40

32 

38 

28 

27 

30

27 

26 

SB 

26 

26

38 

43 

#65

Month

Oct 

NOT 

Dec

C

Jan 

Fob 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

is ater year" 1940-4

Mar.

65 

3S 

27 

28 

33

2S 

SB 

47 

58 

34

45 

40 

54 

33 

32

32 

32 

30 

32 

32

32 

36 

40 

41 

41

40 

45 

45 

' 47 

45 

47

Apr.

50 

45 

43 

45 

47

47 

45 

45 

47 

50

49 

53 

58 

56 

58

56 

58 

56 

54 

47

53 

56 

54 

54 

58

58 

67 

7S 

88 

100

Secondfoot-days

2,420 

1,613 

1,376

68,122

1,264 

986 

1,207 

1,673 

10,313 

11,087 

9,683 

12.704 

14,977

69,303

May

115 

115 

151 

172 

144

162 

179 

244 

310 

335

357 

390 

445 

434 

396

357 

384 

428 

412 

340

330 

33O 

330 

384 

401

440 

475 

445 

423 

434 

451

Maximum

137 

67 

50

776

44 

65 

65 

100 

475 

457 

428 

640 

736

736

June

451 

440 

42S 

445 

457

451 

457 

457 

401 

357

315 

305 

310 

310 

330

357 

384 

406 

440 

418

390 

346 

346 

357 

340

315 

295 

285 

258 

236

July

216 

816 

840 

240 

236

232 

288 

220 

320 

384

401 

418 

48S 

418 

401

384 

379 

357 

357 

384

379 

357 

335 

305 

310

295 

280 

267 

244 

232 

220

Minimum

47 

41

41

35

36 

26 

27 

43 

115 

236 

216 

204 

162

26

Aug.

204 

212 

295 

340 

379

440

531 

51S 

475 

557

481 

457 

384 

374 

384

379 

368 

357 

352 

352

346 

340 

335 

335 

330

368 

457 

531 

570 

619 

640

Mean

78.1 

53.8 

44.4

186

40.8 

35.2 

38.9 

55.8 

333 

370 

312 

410 

499

190

Sept.

640 

619 

596 

672 

780

696 

640 

619 

736 

728

788 

736 

736 

736 

704

612 

564 

499 

418 

396

368 

33O 

363 

236 

168

168 

165 

168 

162 

165

Run-off In 

acre-feet

4,800 

3,200 

2,730

135,100

2,510 

1,960 

2,390 

3,320 

20,460 

21,990 

19,210 

25,800 

29,710

137,500

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 12-17, Nov. 22-30, Dec. 2-9, Dec. 12 to 

Jan. 30, Feb. 2-11, 14.
TRIBUTARIES ABOVE GREEN RIVER 77

Ounnlson River at lola, Colo.

Location.- Water-stage recorder, lat. 38°29', long. 107 0 06', in NWi sec. 28, T. 49-N., 

R. aw., 1,000 feet upstream from highway bridge and 3,000 feet northeast of lola.

Drainage area.- 2,490 square miles.

Records available.- October 1899 to November 1903, April 1938 to September 1941.

Extremes.- Maximum discharge during year, 5,080 second-feet May 14 (gage height, 3.86 

feet); minimum daily, 170 second-feet Dec. 15, 16.

1899-1903, 1938-41: Maximum discharge observed. 6,130 second-feet June 18, 1903 

(gage height, 6.0 feet, site and datum then in use); minimum daily (prior to construction of Taylor Park Reservoir), 221 second-feet at times in period July to October 

1908; minimum daily, 130 second-feet Feb. 19, 1939.

Remarks.- Records excellent except those for period of ice effect, which are fair. Flow 

partly regulated by Taylor Park Reservoir (capacity, 106,000 acre-feet). Diversions 

above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

235 

245 

250 

245 

245

265 

265 

260 

260 

260

250 

235 

230 

225 

225

225 

235 

225 

225 

225

225 

225 

225 

220 

220

225 

230 

240 

240 

245 

250

Nov.

*245 

250 

250 

260 

245

250 

260 

270 

270 

276

260 

265 

230 

200 

215

225

230 

235 

235 

230

230 

230 

230 

225 

225

225 

220 

220 

220 

220

Dec.

220 

215 

210 

210 

210

*206 

205 

210 

210 

205

195 

190 

195 

180 

170

170 

185 

200 

195 

210

190 

1S5 

200 

205 

225

215 

205 

210 

220 

230 

235

Jan.

210 

200 

190 

190 

200

220 

230 

220 

205 

200

210 

230 

235 

250 

240

230 

235 

240 

230 

225

*234 

240 

250 

255 

250

240 

245 

255 

265 

270 

260

Feb.

240 

220 

210 

205 

210

220 

220 

225 

225 

220

220 

220 

 227 

230 

235

240 

240 

240 

240 

250

250 

250 

250 

250 

260

240 

225 

225

Month

Oct 

No\ 

Dec

C

Jar 

Pel 

Mai 

Apr 

Maj 

Jur 

Ju3 

Auj 

Set

fl

alendar year 1940......................

ater year 1940-4 Tl

liar.

230 

250 

260 

250 

260

255 

250 

245 

240 

240

240 

245 

 251 

265 

275

270 

270 

275 

290 

295

300 

310 

320 

320 

318

318 

351 

379 

408 

448 

472

Apr.

543 

507 

472 

464 

498

543 

480 

472 

472 

525

525 

534 

620 

590 

534

516 

507 

489 

456 

432

»408 

440 

440 

472 

561

630 

725 

888 

888 

1,060

Secondfoot-days

7,375 

7,146 

6,311

173,551

7,154 

6,487 

9,100 

16,691 

83,040 

76,410 

37,370 

26,934 

20,321

304,339

May

1,290 

1,270 

1,480 

1,710 

1,620

1,600 

1,440 

1,670 

2,070 

2,470

2,850 

3,270 

4,000 

4,620 

4,300

3,570 

3,530 

3,790 

3,640 

2,970

2,520 

2,430 

2,360 

2,540 

2,810

3,110 

3,290 

2,990 

2,690 

2,560 

2,580

Maximum

265 

876 

235

1,560

270 

260 

472 

1,060 

4,620 

3,190 

1,680 

1,230 

900

4,620

June

2,580 

2,540 

2,640 

2,670 

2,790

2,770 

2,850 

2,990 

2,770 

2,400

2,130 

1,940 

1,830 

1,760 

1,830

1,970 

2,200 

2,640 

3,030 

3,110

3,110 

3,030 

3,050 

3,190 

3,070

2,830 

2,600 

2.250 

2,000 

1,840

July

1,680 

1,500 

1,420 

1,400 

1,400

1,420 

1,380 

1,420 

1,420 

1,440

1,380 

1,370 

1,370 

1,380 

1,270

1,180 

1,120 

1,050 

1,050 

1,240

1,200 

1,100 

1,100 

1,060 

1,020

936 

912 

864 

816 

758 

714

Minimum

220 

200 

170

160

190 

205 

230 

408 

1,270 

1,760 

714 

660 

372

170

Aug.

692 

660 

692 

725 

758

876 

1,050 

1,080 

1,080 

1,230

1,150 

1,070 

960 

888 

912

936 

912 

900 

840 

852

828 

792 

736 

703 

692

681 

747 

816 

852 

900 

924

Mean

238 

238 

204

474

231 

232 

294 

556 

2,679 

2,547 

1,205 

869 

677

834

Sept.

900 

888 

828 

652 

900

888 

840 

788 

876 

S76

828 

816 

804 

852 

864

7SO 

670 

650 

552 

534

480 

480 

507 

464 

393

386 

372 

379 

432 

472

Run-off In 

acre-feet

14,630 

14,170 

12,520

344,200

14,190 

12,870 

18,050 

33,110 

164,700 

151,600 

74,120 

53,420 

40,310

603,700

* Winter discharge measurement made on this day. 

Note.- Stage-discharge relation affected by Ice Nov 13 to Mar. 24.
78 TRIBUTARIES ABOVE GREEN RIVER

Gunnison River near Grand Junction, Colo.

Location.- Water-stage recorder, lat. 39°02', long. 108°34', In NWi sec. 35, T. IS., R. 

1 W., Ute meridian, half a mile downstream from point of diversion of Redlands power 

canal and 2 miles upstream from nouth and Grand Junction.

Drainage area..- 8,020 square miles.

Records available.- October 1894 to December 1895, May 1897 to September 1899 (at site 

near noutrij, April 1917 to September 1928 and January 1934 to September 1941 (at 

present site) In reports of U. S. Geological Survey. April 1917 to September 1930 and 

January 1934 to September 1941 in reports of State engineer.

Average discharge (river and power canal).- 21 years (1917-30, 1933-41), 2,977 second-feet.

Extremes.- Combined flow (river and power canal): Maximum discharge, 27,500 second-feet 

May 14; minimum dally, 577 second-feet Sept. 6.

1917-30, 1933-41: Maximum discharge observed, 35,700 second-feet May 23, 1920 

(gage height, 14.95 feet), from rating curve extended above ail,400 second-feet; minimum 

daily, 106 second-feet July 20, 1934.

Remarks.- Records excellent except those for period Aug. 10 to Sept. 30, which are good. 

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. Discharge tables include 

flow of power canal.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 20"

21 

22 

23 

84 

25

86 

27 

28 

29 

30 

31

Oct.

3,590 

1,910 

1,5SO 

1,460 

1,830

2,730 

1,930 

1,6SO 

1,620

1,560

1,630 

1,460 

1,380 

1,300 

1,250

1,210 

1,170 

1,160 

1,160 

1,110

1,090 

1,030 

996 

942 

1,000

9S6 

1,040 

1,170 

1,100 

1,100 

1,090

Nov.

1,100 

1,080 

1,030 

1,080 

1,030

947 

1,010 

1,040 

1,050 

1,030

1,140 

1,040 

924 

831 

748

870 

991 

1,120 

1,260 

1,260

1,210 

1,180 

1,110 

1,100 

1,090

1,050 

1,030 

957 

909 

1,010

Dec.

1,020 

996 

975 

946

896

869 

SSS 

895 

885 

861

93S 

1,060 

983 

895 

782

699 

622 

716 

S86 

954

916 

782 

791 

808 

943

1,100 

1,010 

913 

888 

92S 

970

 Tan.

980 

928 

782 

648 

5S9

644 

S39 

884 

922 

929

897 

S40 

849 

S36 

849

868 

832 

790 

B19 

865

840 

S45 

848 

S19 

810

S14 

775 

760 

764 

819 

SSS

Feb.

868 

854 

790 

725 

707

720 

762 

806 

Sll 

819

827 

917 

1,050 

988 

936

921 

931 

939 

9SS 

1,090

1,020 

1,010 

1,030 

1,010 

1,060

1,070 

972 

S63

Month

OC1 

Hoi 

Dec

(

Jai 

Fel 

Mai

Am

Ma, 

Jui 

Ju.

Am

Se 

1

Jalendar year 19 10. .....................

 11. .... ....

Ly.. ....................................

tater year 1940-

Mar.

810 

S40 

934 

954 

886

S91 

S72 

S45 

S15 

S19

790 

798 

819 

891 

970

993 

892 

876 

S92 

980

991 

1,220 

1,190 

1,520 

1,530

1,320 

1,220 

1,180 

1,310 

1,480 

1,470

Apr.

1,580 

1,850 

1,670 

1,530 

1,470

1,600 

1,560 

1,370 

1,180 

1,240

1,570 

1,610 

1,790 

2,050

1,690

1,640 

1,580 

1,530 

1,440 

1,430

1,250 

1,150 

1,150 

1,370 

1,850

2,460 

3,530 

5,200 

6,410 

6,350

Secondfoot-days

44,174 

31,327 

27,815

562,853

25 542

25,474 

31,938 

62,100 

439,120 

283,960 

96,760 

48,001 

40,834

1,157,045

May

7,440 

7,330 

8,370 

11,400 

14,200

12,400 

12,000 

12,300 

14,300 

17,600

19,400 

20,300 

23,200 

26,200 

24,400

19,700 

16,500 

16,900 

17,200 

14,000

11,100 

10,400 

10,500 

10,700 

11,100

12,200 

13,100 

13,000 

11,100 

10,200 

9,5SO

Maximum

3,590 

1,260 

1,100

3,560

980 

1,090 

1,530 

6,430 

26,200 

12,000 

5,650 

3,090 

2,960

26,200

June

9,280 

9,210 

9,210 

9,600 

9,5»0

9,S80 

10,600 

12,000 

11,600 

10,400

9,530 

8,240 

7,340 

7,070 

7,190

7,640 

8,210 

9,070 

10,600 

11,300

11,100 

10,800 

10,300 

11,300 

11,000

10,100 

9,360 

S,360 

7,410 

6,270

July

6,650 

5,150 

4,610 

4,420 

4,400

4,210 

3,990 

3,390 

3,S10 

3,360

3,740 

3,710 

3,560 

3,510 

3,210

2,920 

2,740 

2,450 

2,640 

2.610

2,390 

2,530 

2,210 

2,040 

2,010

2,000 

1,870 

1,840 

1,640 

1,400 

1,250

Minimum

942 

748 

622

306

589 

707 

790 

1,150 

7,330 

6,270 

1,250 

586 

577

577

Aug.

1,100 

976 

896 

322 

776

778 

1,130 

1,990 

2,210 

3,090

3,070 

2,840 

2,500 

2,170 

1,S30

2,150 

2,390 

2,360 

2,110 

1,890

1,710 

1,550 

1,330 

1,140 

941

346 

a 734 

a620 

&5S6 

a620 

a846

Mean

1,425 

1,044 

397

1,511

S24 

910 

],030 

2,070 

14,170 

9,466 

3,121 

1,648 

1,361

3,170

Sept.

aSV4 

a874 

aS46 

a76S 

a652

a57V 

a606 

a670 

a798 

a843

836 

887 

931 

1,140 

1,360

1,340 

1,290 

1,240 

1,420 

1,410

1,320 

2,730 

2,960 

2,500 

2,300

2,150 

1,970 

1,S10 

1,750 

1,980

Run-off In 

acre-feet

37,620 

62,140 

55,170

1,096,000

50,660 

50,530 

63,350 

183,200 

371,000 

563,200 

191,900 

95,210 

80,990

8,295,000

a No gage-height record for river station; discharge computed on basis of records for canal.
TRIBUTARIES ABOVE GREEN RIVER 79 

East River near Crested Butte, Colo.

Location.- Staff gage, lat. 38°52', long. 106°5£', In NEi sec. 5, T. 14 S., R. 85 W., 

at -highway bridge, 1.2 miles downstream from Brush Creek aud 4i miles east of Crested 

Butte.

Drainage area.- 89.2 square miles.

Records available.- April to September 1941.

Extrenes.- Maximum discharge observed during period, 1,020 second-feet June 18 (gage 

height, 2.80 feet), from rating curve extended above 700 second-feet; minimum dally, 

45 second-feet Sspt. 6.

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

'Gage read twice daily. Several small diversions above station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Apr. 20 to Aug. 

31 furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

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. NOT. Dec. Jan. Feb.

Month

Oct 

NOT 

Dee

C

Jar 

Fal 

JSai 

APT 

Ma3 

Jui ju]

Au« 

Sej

T

alendar year

 ch......--- ------------------ -- -

 11 20-30

Ly........ ..............................

he perlo

Mar. Apr.

204

195

246 

201 

195 

192

201 

232 

198 

219 

201

Secondfoot -days

2,284 

16,414 

16,444 

7,196 

2,139 

1,667

-

May

a205 

a250 

a245 

a250 

aSOO

a335

a360 

a380 

a 425 

a 480

a560 

a700 

789 

817 

712

677 

789 

705 

599 

440

540 

479 

557 

605 

824

670 

664 

587 

468 

484 

518

IteTlmim

246 

824 

852 

385 

76 

80

-

June

518 

523 

575 

691 

587

534 

575 

523 

410 

344

316 

288 

300 

316 

349

490 

644 

652 

789 

768

684 

691 

705 

712 

684

644 

569 

501 

462 

410

July

385 

354 

358 

367 

385

385 

320 

280 

296 

276

276 

276 

219 

207 

312

204 

225 

192 

204 

228

201 

180 

162 

135 

125

125 

117 

113 

99 

98 

92

Ml n1 iwa1"

192 

205 

288 

92 

54 

45

-

Aug.

75 

76 

75 

75 

75

75 

75 

75 

75 

75

75 

75 

75 

75 

75

75 

75 

75 

66 

65

68 

68 

66 

64 

60

57 

55 

54 

55 

56 

54

He an

208 

529 

548 

232 

69.0 

55.6

-

Sept.

54 

52

46 

46 

47

45 

51 

56 

53 

50

47 

47 

52 

76 

67

55 

55 

53 

56

56

56 

56 

56 

56 

56

55 

56 

a62

a70 

a80

Hun-off In 

acre-feet

4,530 

32,560 

32,620 

14,270 

4,240 

3,310

91,530

a No gage-height record; discharge comnute<3 on basis of records for station at Almont, Colo.
80 TRIBUTARIES ABOVE GREEN RIVER

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, 400 feet upstream from n.outh. Datum of gage Is 8,009.51 feet above 

mean sea level, adjustment of 1912.

Drainage area.- 295 square miles.

Records available.- April to October 1905, July 1910 to April 1922, October 1934 to 

September 1941.

Average discharge.- 14 years (1910-13, 1916-20, 1934-41), 363 second-feet.

Extremes.- Maximum discharge during year, 3,240 second-feet May 14 (gage height, 4.70 

Feet) , from rating curve extended above 1,600 second-feet; minimum dally, 42 secondfeet Feb. 27.

1905, 1910-22, 1934-41: Maximum discharge, 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, 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.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

136 

131 

122 

119

131 

119 

117 

117 

126

117 

108 

96 

92 

87

86 

84 

81

76 

75

75 

73 

73 

72 

72

73 

81 

81 

81 

96 

92

Nov.

84 

84 

87 

90 

76

87 

87 

89 

89 

87

73 

72 

72 

70 

70

75 

82 

«89 

94 

89

90 

87 

86 

81 

81

76 

72 

74 

76 

76

Dec.

76 

70 

69 

75 

73

75 

70 

68 

70 

72

70 

6P 

68 

60 

54

54 

56 

58

60 

62

58 

56 

57 

59 

64

60 

56 

60 

62 

63 

64

Jan.

61 

56 

54 

52 

53

55 

55 

54 

53 

53

56 

60 

62 

63 

60

60 

62 

60 

59 

58

62 

*66 

65 

63 

63

61 

58 

56 

58 

62 

63

Feb.

61 

57 

53 

51 

50

51 

53 

56 

58 

59

60 

62 

62 

61 

56

52 

53 

52 

52 

50

50 

52 

46 

50 

52

48 

42 

*45

Month

Oct 

No? 

Dec

C

Jan 

Feb 

Mar 

Apr 

Ma, 

Jun 

Jul 

Aug 

Sep

fl

alendar year 19 to. .....................

11. ....................................

ater year 1940-'

Mar.

47 

52 

50 

48 

52

48 

48 

46 

52 

48

49 

46 

50 

49 

46

43 

45 

48 

52 

52

55 

58 

62 

61 

56

52 

55 

56 

58 

61 

62

Apr.

69 

67 

67 

67 

70

67 

66 

66 

76 

88

86 

104 

119 

106

119

128 

123 

117 

108 

96

102 

119 

128 

165 

222

260 

334 

352 

343 

475

Secondfoot -days

2,997 

2,445 

1,988

68,558

1,823 

1,494 

1,507 

4,309 

43,567 

37,737 

14,793 

6,292 

3,274

122,326

Hay

555 

555 

732 

816 

697

718 

683 

921 

1,180 

1,610

1,800 

2,130 

2,610 

2,730 

2,300

1,700 

1,800 

2,050 

1,760 

1,180

1,050 

1,170 

1,140 

1,360 

1,570

1,790 

1,800 

1,410 

1,260 

1,200 

1,290

Maximum

136 

94

_ 76

1,130

66 

62 

62 

475 

2,730 

1,700 

808 

271 

150

2,730

June

1,270 

1,250 

1,410 

1,440 

1,490

1,410 

1,490 

1,440 

1,130 

903

784 

704 

690 

725 

792

970 

1,220 

1,560 

1,700 

1,700

1,700 

1,650 

1,620 

1,680 

1,500

1,410 

1,260 

1,050 

940 

849

July

808 

711 

704 

718 

732

669 

655 

662 

655 

608

566 

560 

520 

485 

451

433 

410 

402 

397 

442

388 

356 

343 

338 

313

285 

268 

254 

236 

218 

206

Minimum

72 

70 

54

20

52 

42 

43 

66 

555 

690 

206 

137 

79

42

Aug.

197 

194 

191 

194 

206

226 

257 

254 

268

271

257 

264 

246 

222 

226

229 

209 

200 

203 

218

209 

200 

177 

163 

154

150 

144 

140 

142 

144 

137

lie an

96.7 

81.5

64.1

187

58.8 

53.4 

51.8 

144 

1,405 

1,258 

477 

203 

109

335

Sept.

132 

130 

117 

108 

100

96 

79 

81 

98 

108

104 

98 

106 

137 

128

119 

al!2 

a!02 

alOO 

alOO

a!02 

a!02 

a 102 

a 102 

a!02

102 

102 

121 

134 

150

Run-off in 

acre-feet

5,940 

4,850 

3,940

136,000

3,620 

2,960 

3,190 

8,550 

86,410 

74,850 

29,340 

12,480 

6,490

242,600

* Winter discharge measurement made on this day.

a No gage-height records discharge computed on basis of recorded range In stage and records for 

station near Crested Butte, Colo.

Note.- Stage-discharge relation affected by Ice Nov. 18-17, 27, 28, Dec. 14 to Feb. 13.
TRIBUTARIES ABOVE GREEN R?VER 81

Slate River near Crested Butte, Colo.

Location.- Staff gage, lat. 38°52', long. 106°58', in sec. 2, T. 14 S., R. 86 W., half 

a rane downstream from Coal creek and 1 mile east of Crested Butte.

Drainage area.- 69.0 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 1,240 second-feet May 13 (gage 

height, 3.98 feet); minimum daily, 21 second-feet Sept. 5-7.

Remarks.- Records good. Gage read twice dally. Diversions above etatlon for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Apr. 18 to Aug. 

31 furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

IP 

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

Oct 

Ho\ 

Dec

C

Jar 

Pel 

Mai 

Api 

Ha, 

Jur 

Ju] 

Auf 

Sej

T

alendar year

ch. ......--..-.----.- -.--..------.--..

11 18-30

USt........................... .........

he perlo

Mar. Apr.

41 

39 

36

39 

39

54 

121 

139

ISO 

206 

227 

257 

303

Secondfoot-days

1,631 

24,118 

17,374 

6,099 

1,357 

977

-

May

342 

352 

342 

370 

42S

452 

476 

604 

736 

814

950 

1,110 

1,820 

1,200 

1,100

1,010 

1,050 

1,000 

920 

712

59S 

624 

778 

880 

910

950 

930 

920 

S50 

778 

712

Maximum

303 

1,220 

823 

396 

67 

53

-

June

659 

604 

631 

6SO 

6SO

659 

696 

720 

652 

520

432 

328 

32S 

328 

420

440 

480 

540 

645 

736

823 

805 

744 

668 

624

604 

520 

492 

460 

436

July

396 

345 

314 

292 

292

2S2 

272 

272 

269 

257

24S 

233 

215 

191 

169

161 

153 

147 

158 

191

163 

150 

142 

126 

118

114 

99 

95 

86 

79 

70

Minimum

36 

342 

32S 

70 

27 

21

-

Aug.

67 

64 

59 

59 

66

61 

59 

56 

56 

54

52 

48 

46 

46 

43

42 

41 

41 

39 

33

36 

35 

32 

30 

29

23 

27 

27 

29 

29 

23

Mean

129 

773 

579 

197 

43. S 

32.6

-

Sept.

27 

26 

25 

23 

21

21 

21 

26 

28 

26

24 

23 

30 

36 

35

34 

36 

36 

35 

34

33 

36 

43 

47 

45

41 

37 

36 

40 

53

Run-off In 

acre-feet

3,330 

47,840 

34,460 

12,100 

2,690 

1,940

102,400
82 TRIBUTARIES ABOVE GREEN RIVER 

Cement Creek near Crested Butte, Colo.

Location.- Staff gage, lat, 38°50', long. 106°50', in SEt sec. 13, T. 14 S., R. 85 W., 

near Pioneer Resort, three-quarters of a mile upstream from Weird Gulch and 8i miles 

southeast of Crested Butte. Former staff gage at site 2 miles downstream at 

different datum.

Drainage area.- 27.7 square miles.

Records available.- November 1910 to November 1913, April to September 1941.

Extremes.- Maximum discharge observed during period, 160 second-feet May 17 (gage height, 

8.60 feet); minimum daily, 7.6 second-feet Apr. 21.

1910-13, 1941: Maximum discharge observed, 330 second-feet June 7, 1912 (gage 

height, 1.9 feet, site and datum then In use), from rating curve extended above 270 

second-feet; minimum observed, 6 second-feet at times in January and February 1913.

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

Gage read twice daily. Diversions above station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Apr. 18 to Aug. 31 

furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

8 

9 

10

13 

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

Oot

KOTi

Dec 

C

Jar 

Pet 

Mai 

Apr 

tej 

Jur 

Ju3 

Auj 

Sei

7

alendar year

 oh. ,...,-----------------.--.--- ------

 11 18-3C

Phe perlc

Mar. Apr.

ao

10 

10

7.6 

9.7 

11 

12 

15

17 

18 

18 

19 

24

Secondfoot-days

181.3 

2,774 

3,446 

1,360 

611 

522

-

May

24 

24 

27 

29 

29

33 

34 

44 

58 

76

86 

99 

116 

136 

140

328

149 

136 

132 

132

96 

93 

96 

112 

108

112 

110 

112 

114 

116 

114

 »!«.

24 

148 

148 

69 

24 

22

-

June

114 

118 

136 

136 

140

136 

136 

136 

118 

104

96 

91 

99 

91 

102

128 

148 

144 

140 

136

130 

126 

116 

108 

108

95 

89 

84 

79

72

July

69 

66 

63 

63 

60

60 

56 

55 

53 

52

50 

50 

50 

44 

42

40 

36 

36 

38 

35

35 

35 

35 

35 

34

33 

31 

29 

26 

25 

24

Minimum

7.6 

24 

72 

24 

17 

16

-

Aug.

24 

24 

22 

21 

21

21 

21 

21 

20

SI

22 

22 

21 

19 

19

19 

SI 

21 

19

19

18 

18 

18 

18 

18

18 

17 

17 

17 

17 

17

Mean

13.9 

69.5 

115 

43.9 

19.7 

17.4

-

Sept.

17 

17 

17 

17 

16

16 

16 

16 

17

17

17 

16 

16 

16 

17

17 

17 

17 

17 

17

17 

18 

19 

21 

20

19 

18 

17 

18 

22

Run-off in 

acre-feet

360 

5,500 

6,840 

2,700 

1,210 

1,040

17,650

Hote.- No gage-height record Sept. 7-30j discharge computed on basis of one discharge meaaurement and records for Slate River near Crested Butte.
TRIBUTARIES ABOVE GREEN RIVER 

Ohio Creek near Baldwin, Colo.

83

Location.- Staff gage, iat. 38°4£', long. 107°00', in SWt sec. 34, T. 15 S., R. 86 W., 

800 feet downstream from Mill Creek and 5t miles southeast of Baldwin.

Drainage area.- 124 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 940 second-feet May 13 (gage height, 

4.20 feet), from rating curve extended above 700 second-feet; minimum daily, 15 secondfeet Sept'. 4, 5, 7.

Remarks.~ Records good. Gage read twice daily. Many small diversions above station for 

Irrlgation.

Cooperation.- Gage-height records and results of discharge measurements Apr. 15 to Aug. 

30 furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct. NOT. Dec. Jan. F«rt>.

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Ju3

AU£

Sej

5

alendar year

miarv eh. .....----..----.--------.-----------

11 15-3C

'he perlc>d .............................

Mar. Apr.

51

55 

52 

41 

37 

37

46 

57 

60 

99 

114

130 

137 

162 

195 

209

Secondfoot-days

1,482 

14,805 

10,091 

4,049 

1,311 

683

-

May

220 

244 

292 

346 

304

262 

292 

364 

460 

561

641 

734 

S72 

876 

700

603 

622 

667 

552 

430

379 

412 

409 

436 

481

514 

508 

448 

400 

385 

391

Maximum

209 

876 

430 

212 

64 

36

-

June

382 

382 

394 

376 

346

346 

382 

430 

319 

256

235 

226 

218 

247 

277

307 

367 

337 

418 

412

406 

421 

412 

424 

370

346 

310 

271 

256 

218

July

212 

188 

201 

188 

201

182 

167 

160 

19S 

172

162 

139 

124 

122 

104

104 

116 

116 

168 

182

104 

97 

101 

96 

88

88 

73 

72 

64 

63 

63

Minimum

37 

220 

218 

63 

28 

16

-

Aug.

56 

52 

62 

62 

62

52 

51 

62 

64 

63

57 

57 

52 

40 

37

41 

41 

38 

36 

32

35 

35 

33 

30 

29

30 

29 

28 

28 

29 

26

Mean

92.6 

478 

336 

131 

42.3 

28.8

-

Sept.

22 

23 

16 

16 

16

22 

16 

18 

21 

22

21

18 

19 

35 

27

24 

22 

23 

23 

28

21

26 

33 

29 

25

29 

26 

21 

82 

29

Run-off In 

aere-feet

2,940 

29,370 

20,020 

8,030 

2,600 

1,360

64 ,310
34 TRIBUTARIES ABOVE GREEN RIVER 

Tomichi Creek at Sargents, Colo.

Location.- Water-stage recorder, lat. 3S°24', long. 106°25', in SWi sec. 21, T. 4S N., R. 

5 E., half a mile downstream from Marshall Creek and three-quarters of a mile south 

of Sarerents.

Drainage area.- 155 square miles.

Records available.- May 1917 to September 1922, April 1938 to September 1941.

Extremes.- Maximum discharge during year, 445 second-feet May 14 (gage height, 2.50 

feet); minimum daily, 15 second-feet Jan. 3, 4.

1917-22, 1938-41: 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 excellent except those for period of Ice effect, which are fair. 

Diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

24 

22

22 

23 

23 

22 

22

22 

22 

22 

22 

21

20 

19 

19 

18 

16

IS 

18 

17 

17 

16

16 

20 

22 

21 

20 

21

Nov.

19 

20 

20 

20 

21

22 

22 

22 

22 

22

23 

21 

16 

18 

20

22 

24 

*25 

25 

25

25 

24 

24 

23 

24

23 

22 

23 

23 

24

Dec.

23 

23 

22 

22 

22

21 

21 

22 

21 

20

20 

20 

19 

17 

16

17 

18 

19 

19 

20

19 

18 

19 

20 

20

19 

IS 

19 

19 

20 

21

Jan.

20 

17 

15 

15 

16

17 

19 

19 

18 

17

17 

17 

IS 

18 

17

16 

16 

17 

16 

17

17 

17 

*17 

18 

18

17 

18 

18 

19 

20 

20

Feb.

18 

17 

17 

16 

16

17 

IS 

18 

18 

18

17 

IS 

18 

19 

19

19 

19 

19 

20 

*20

#21 

#20 

20 

20 

21

19

ie

17

Month

Oct 

Hot 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

JUE 

Jul 

Aug 

Sep

fl

alendar year 1940... ...................

T«t....... .............................

ater year 1940-4 i

Mar.

18 

19 

19 

18 

18

18 

17 

17 

16 

16

16 

17 

*17 

18 

18

18 

IS 

19 

19 

20

21 

21 

22 

22 

22

22 

23 

26 

28 

32 

35

Apr.

37 

34 

33 

36 

42

39 

39 

39 

44 

48

44 

63 

60 

44 

43

42 

43 

42 

3S 

*37

37 

43 

46 

52 

54

58 

65 

75 

68 

68

Secondfoot-days

649 

664 

614

11,580

541 

517 

630 

1,413 

7,926 

7,022 

2,589 

1,133 

895

24,593

May

73 

75 

92 

105 

8S

94 

107 

131 

162 

202

225 

26S 

355 

424 

412

355 

376 

394 

338 

295

268 

282 

265 

270 

310

330 

349 

346 

325 

308 

302

Maximum

28 

25 

23

140

20 

21 

35 

75 

424 

310 

140 

43 

46

424

June

310 

285 

288 

29S 

285

278 

292 

288 

255 

262

240 

205 

192 

195 

205

210 

210 

230 

245 

245

232 

228 

235 

228 

222

202 

188 

172 

152 

145

July

140 

129 

118 

114 

116

114 

105 

111 

107 

98

90 

83 

79 

SI 

75

77 

73 

77 

72 

90

77 

72 

65 

61 

66

58 

55 

52 

48 

44 

42

Minimum

16 

16 

16

11

15 

16 

16 

33 

73 

145 

42 

29 

25

15

Aug.

41 

39 

37 

33 

29

33 

3S 

42 

42 

43

39 

42 

39 

38 

43

41 

43 

39 

36 

36

36 

38 

35 

32 

31

30 

29 

30 

32 

36 

31

Mean

20.9 

22.1 

19.8

31.6

17.5 

18.5 

20.3 

47.1 

256 

234 

83.5 

36.5 

29.8

67.4

Sept.

29 

29 

27 

26 

26

26 

25 

30 

32 

30

28 

2S 

29 

32 

30

29 

28 

29 

29 

28

27 

30 

46 

33 

30

29 

28 

27 

33 

42

Run-off in 

acre-feet

1,290 

1,330 

1,220

22,980

1,070 

1,030 

1,250 

2,800 

15,720 

13,930 

5,140 

2,250 

1,780

48,800

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 12 to Apr. 3.
TRIBUTARIES ABOVE GREEN RIVER 

Tomlchl Creek at Gunnlson, Colo.

85

Location.- Water-stage recorder, lat. 38°32', long. 106°56', In sec. 11, T. 49 N., R. 1 

w., naif a mile upstream from mouth and 1 mile south of Gunnlson.

Drainage area.- 1,020 square miles.

Records available.- April 1938 to September 1941. November, December 1910 (gage heights 

only, datum then In use).

Extremes.- Maximum discharge during year, 855 second-feet May 16 (gage height, 3.00 feet): 

minimum dally, 47 second-feet Oct. 26.

1938-41: Maximum discharge, 1,530 second-feet Mar. 24, 1939 (gage height, 3.93 

feet, present datum, from rating curve extended above 1,000 second-feet: minimum dally, 

26 second-feet Sept. 16, 17, 19, 1940.

Remarks.- Records fair. Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

56 

56 

56 

55 

55

55 

52 

54 

55 

52

52 

52 

52 

52 

54

55 

55 

56 

58 

56

55 

51 

51 

52 

4S

47 

49 

56 

61 

62 

62

Nov.

«61 

59 

64 

6S 

65

6S 

72 

75 

76 

76

65 

62 

62 

64 

67

70 

71 

72 

71

71

70 

68 

6S 

6S 

6S

67 

65 

65 

67 

67

Dec.

66 

6S 

71 

72 

72

«69 

68 

69 

70 

66

66 

65 

65 

62 

59

60 

62 

64 

66 

67

65 

62 

58 

57 

57

58 

59 

58 

56 

55 

56

Jan.

5S 

61 

58 

53 

51

53 

55 

58 

63 

62

61 

61 

63 

64 

67

67 

67 

67 

66 

66

66 

66 

«65 

67 

68

6S 

66 

67 

69 

71 

73

Feb.

73 

70 

67 

67 

6S

71 

73 

75 

76 

78

78 

77 

77 

7S 

7S

78 

79 

SO 

80 

SO

*81 

B8 

*S4 

82 

81

SO 

80 

 K-78

Month

Dot 

No? 

Dec

C

Jar 

Pel 

Mar 

Api 

Maj 

JUT 

Jul 

Aug 

Se]

H

alendar year 19'

ater year 1940-

liar.

92 

S2 

S7 

65

eo

S9 

87 

89 

a85

aee

a76 

76 

SO 

73 

73

78 

76 

76 

S3 

S5

82 

S9 

96 

96 

100

114 

126 

13S 

140 

155 

167

Apr.

200 

190 

1S6 

179 

224

241 

210 

213 

213 

237

227 

227 

28S 

24S 

220

210 

210 

200 

190 

164

143 

143 

146 

155 

167

173 

193 

230 

241 

244

Secondfoot-days

1,682 

2,032 

1,968

27 ,452

1,967 

2,151 

2,939 

6,112 

16,262 

19,532 

S.702 

6,206 

2,262

71 ,815

May

24S 

244 

251 

266 

288

255 

237 

241 

276 

307

352 

3S8 

486 

634 

759

831 

S25 

807 

a790 

a740

a680 

a600 

a580 

a560 

a5SO

a620 

a720 

a700 

699 

675 

623

Maximum

62 

76 

72

276

73 

S4 

167 

2S8 

631 

S07 

460 

262 

122

831

June

612 

618 

579 

56S 

62S

623 

634 

6S7 

735 

735

699 

657 

579 

530 

a495

513 

513 

568 

651 

711

747 

747 

753 

807 

789

783 

771 

675 

590 

535

July

460 

400 

360 

315 

305

310 

305 

300 

2S5 

300

2SO 

276 

290 

310 

271

235 

223 

1S1 

192 

262

276 

25S 

295 

315 

271

24S 

253 

248 

240 

219 

219

Minimum

47 

59 

55

26

51 

67 

73 

143 

237 

495 

1S1 

125 

56

47

Aug.

215 

199 

18S 

1S1 

178

1S4 

223 

235 

235 

262

262 

244 

219 

211 

227

235 

240 

258 

231 

211

199 

192 

1SS 

17S 

174

164 

153 

139 

125 

12S 

12S

Mean

51. i 

67.7 

63,5

75.0

63.5 

76. S 

94,8 

204 

525 

651 

281 

200 

75,4

197

Sept.

122 

114 

106 

91 

S9

S3 

76 

76 

S3 

85

7S 

74 

70 

71 

73

73 

68 

63 

62 

60

59 

56 

60 

65 

63

63 

63 

63 

68 

83

Run-off in 

acre-feet

3,340 

4,030 

3,900

54,450

3,900 

4,270 

5,830 

12,120 

32,260 

3S,740 

17,260 

12,310 

4,490

142 ,400

* Winter discharge measurement made on this day,

a Ho gage-height record) discharge computed on basis of recorded range in stage and records for 

station at Sargents«

Note.- Stage-discharge relation affected by ice HOT. 12 to Feb. 37.
86 TRIBUTARIES ABOVE OREEN RIVER

Quartz Creek near Ohio, Colo.

Location.- Water-stage recorder, lat. 38°34', long. 106°38', In SWi sec. 27, T. 50 N., R.

 3 E., half a mile downstream from Willow Creek and 1 mile southwest of Ohio.

Drainage area.- 101 square miles.

Records available.- April 1938 to September 1941.

Extremes.- Maximum discharge during year, 370 second-feet June 19 (gage height, 2.31

 feet); minimum dally, 11 second-feet Feb. 4, 5, Mar. 11-13.

1938-41: Maximum discharge, 572 second-feet May 30, 1938 (gage height, 2.71 feet); 

minimum dally, 10 second-feet Feb. 6, Sept. 16, 17, 1940.

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

which are fair. Small diversions above station for Irrigation. Slight regulation by 

small power plant 3 miles above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14ie

16 

17 

18 

19 

20

21 

22 

2S 

24 

25

26 

27 

28 

29 

30 

SI

Oct.

42 

39 

34 

33 

34

39 

35 

33 

33 

36

33 

31 

30 

29 

28

28 

27 

37 

27 

26

24 

22 

22 

22 

22

20 

22 

24 

20 

22 

20

Kov.

20 

23 

25 

24 

22

27 

25 

24 

25 

24

21 

18 

15 

16 

18

19 

20 

*20 

20 

20

20 

19 

19 

19 

20

19 

18 

19 

19 

19

Dec.

19

IS 

18 

17 

16

*16 

16 

17 

17 

16

16 

15 

14 

13 

13

13

14 

14 

14 

15

14 

13 

14 

14 

15

14 

14 

14 

14 

15 

15

Jan.

14 

13 

12 

12 

13

14 

15 

15 

14 

14

14 

14 

15 

14 

14

13 

13 

14 

13

14

14 

15 

*L5 

15 

15

15 

15 

16 

16 

16 

16

Feb.

14 

13 

12 

11 

11

12 

12 

13 

13 

12

12 

13 

13 

14 

15

15 

16 

16 

16 

17

*18 

*19 

«18 

19 

19

19 

18 

*23

Month

Oet

Nov 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

JUE 

Jill 

Aug 

Set

fl

alendar year 19<to. .....................

ater year 1940-4 1.. ....................

liar.

16 

16 

15 

14 

14

14 

13 

13 

12 

12

11 

11 

*11 

12 

13

14ie

16 

17 

IS

18 

IS 

18 

19 

19

19 

18 

18 

19 

20 

£3

Apr.

25 

24 

23 

25 

29

28 

27 

28 

31 

32

31 

40 

36 

32 

29

30 

30 

29 

27 

*26

27 

24 

22 

29 

28

28 

31 

39 

39 

45

Secondfoot-days

884 

617 

467

10,630

441 

422 

486 

896 

5,760 

6,605 

2,532 

1,489 

728

21,327

May

48 

50 

60 

62 

56

66 

72 

94 

121 

142

186 

228 

273 

297 

291

256 

282 

297 

250 

194

180 

183 

175 

197 

236

261 

288 

261 

228 

208 

219

Maximum

42

27 

19

132

16 

23 

23 

45 

297 

312 

150 

82 

35

312

June

226 

186 

194 

208 

226

233

256 

239 

206 

1S6

164 

162 

149 

164 

194

216 

236 

288 

312 

303

285 

276 

273 

261 

247

219 

194 

183 

172 

156

July

150 

140 

125 

120 

125

115 

105 

100 

92 

S6

82

78 

74 

76 

72

74 

70 

72 

84 

96

84 

76 

76 

52 

45

43 

45 

46 

43 

42 

44

Minimum

20 

15 

13

10

12 

11 

11 

22 

48 

149 

42 

29 

14

11

Aug.

45 

44 

41 

45 

45

52

72 

65 

68 

S2

66 

68 

51 

57 

61

55

51 

48 

45 

46

43 

42 

39 

37 

37

34 

33 

31 

33 

34 

29

Mean

28.5 

20.6 

15.1

29.0

14.2 

15.1 

15.7 

29.9 

186 

220 

81.7 

48.0 

24.3

58.4

Sept.

32

29 

28 

27 

21

16

14 

i7 

18 

20

20 

21 

21 

24 

23

22

23 

22 

21 

21

22 

26 

32 

30 

29

29

27 

25 

33 

36

Run-off In 

acre-feet

1,760 

1,220 

92S

21,080

876 

837 

964 

1,780 

11,420 

13,100 

6,020 

2,960 

1,440

42,280

* Winter discharge measurement made on this day.

Note.- No gage-height record June 30 to July 21; discharge computed on basis of records for Tomlchl 

reek at Sargents, Stage-discharge relation affected by Ice HOT. 11 to Apr. 19.
TRIBUTARIES ABOVE GREEN RIVER 

Cochetopa Creek near Parlin, Colo.

87

Location.- Staff gage, lat. 38°24', long. 106°46', in NWf sec. 28, T. 48 N., R. 2 E., at 

TTmney Ranch, 1 mile downstream from Bead Creek and 8 miles southwest of Parlin.

Drainage area.- 346 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 380 second-feet June 26, from rating 

curve extended above 260 second-feet; maximum gage height observed, 4.24 feet June 25; 

minimum dally discharge, 15 second-feet Sept. 18.

Remarks.- Records good. Gage read twice dally. Diversions above station for Irrigation.

Cooperation.- Gage-height record and results of discharge measurements Apr. 1 to Aug. 31 

furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

1 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

29

21 

22 

23 

24 

25

26 

27 

28 

29 

39 

31

Oct. HOT. Dec. Jan. Feb.

Month

Oet 

Hoi

Dec

C

Jar 

Fel 

*u 

Api 

*>3 

dux 

JuJ

AU«

Sej 

1

alendar year

"he perlc

Mar. Apr.

54 

30 

30 

30 

42

43 

48 

42 

48 

59

78 

135 

88 

66 

64

63 

72 

48 

44

41

33 

42 

46 

64 

76

79 

85 

96 

90 

98

Secondfoot-clays

1,808 

4,992 

6,990 

3,678 

2,151 

810

-

May

94 

S6 

118 

107 

90

84 

85 

86 

91 

85

97 

119 

201 

250 

2S7

245 

257 

250 

259 

245

207 

180 

235 

186

180

172 

161 

156 

158 

148 

135

Maximum

135 

259 

38O 

193 

91 

42

-

Juna

148 

161 

156 

178 

172

185 

196 

237 

228 

203

198 

161 

148 

128 

135

158 

185 

237 

304 

329

336 

324 

311 

317 

354

3SO 

536 

319 

260 

206

July

193 

180 

153 

140 

151

150 

148 

140 

161 

155

126 

126 

146

126 

115

115 

102 

91 

96 

114

96 

88 

87 

87 

85

96 

94 

90 

79 

73 

79

Minimum

30 

84 

128 

73 

50 

15

-

Aug.

68 

67 

66 

64 

61

65 

75 

82 

79 

88

81 

76 

71 

67 

77

85 

87 

91 

76 

69

69 

75 

57 

63 

60

57 

54 

50 

52 

57 

64

Mean

60.3 

161 

235 

119 

69.4 

27.0

-

Sept.

42 

41 

38 

37 

33

39 

28 

30 

S3 

30

30 

29 

28 

28 

28

27 

18 

15 

18 

18

15 

16 

24 

24 

24

23 

23 

23 

29 

28

Run- off In 

acre-feet

3,590 

9,900 

13,860 

7.300 

4,270 

1,610

40,530
Location.- Water-stag 

powder-horn.

TRIBUTARIES ABOVE GREEN RIVER

Cebolla Creek at Powderhorn, Colo.

recorder, lat. 38°17'30", long. 107°07'00", In SEi sec. 29, T. 

feet downstream from Powderhorn Creek and half a mile north of

Drainage area.- 334 square miles.

Records available.- April 1938 to September 1941.

Extremes.- Maximum discharge during year, 1,070 second-feet May 13 (gage height, 2,47 

leet), from rating curve extended above 700 second-feet; minimum dally, 28 second-fest 

Jan. 3.

1938-41: Maximum discharge, that of May 13, 1941; minimum dally, 22 second-feet 

July 14, 1940.

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 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

Si 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

49 

45 

43 

43 

44

49 

44 

43 

43 

39

36 

37 

38 

38 

39

39 

39 

39 

38 

37

35 

35 

37 

37 

37

42 

42 

37 

37 

37 

36

Nov.

*40 

44 

45 

45 

36

43 

40 

39 

39 

40

40 

41 

39 

33 

36

38 

38 

39 

39 

38

38 

37 

37 

37 

37

37 

36 

36 

36 

37

Dec.

37 

38 

38 

36 

36

36 

37 

36 

35 

33

33 

31 

31 

31 

31

31 

32 

32 

33 

33

32 

32 

32 

33 

33

32 

31 

32 

32 

33 

33

Jan.

32 

29 

28 

29 

30

32 

33 

32 

32 

31

30 

31 

32 

33 

33

32 

32 

33 

33 

33

*32 

32 

32 

32 

32

32 

33 

34 

35 

35 

35

Feb.

34 

33 

32 

32 

32

33 

34 

35 

37 

37

37 

37 

*38 

39 

41

40 

40 

40 

40 

41

41 

41 

41 

42 

41

39 

39 

38

Month

Oct 

NOM 

Dec

C

Jar 

Fel 

Mai 

Apr

Jur 

Jul 

Aug 

Sej

VI

alendar year!94 3 ......................

ater year 1940-4

Mar.

41 

42 

43 

44 

45

44 

44 

42 

42 

43

45 

*47 

48 

48 

48

48 

48 

48 

51 

52

51 

53 

54 

55 

55

55 

56 

56 

58 

62 

68

Apr._

70 

66 

68 

73 

76

79 

72 

70 

72 

76

74 

S2 

90 

78 

76

76 

76 

74 

71 

69

*64 

64 

63 

61 

73

77 

93 

130 

166 

220

Secondfoot -days

1,234 

1,160 

1,035

17,145

994 

1,054 

1,536 

2,499 

14,357 

11,930 

5,512 

3,737 

2,168

47,216

May

256 

a270 

a295 

a340 

a310

325 

355 

4 S3 

607 

663

671 

744 

861 

852 

671

551 

543 

599 

607 

399

338 

332 

332 

316 

360

392 

446 

412 

386 

344 

327

Maximum

49 

45 

38

177

35 

42 

68 

220 

861 

596 

256 

169 

101

861

June

360 

332 

373 

453 

399

412 

425 

399 

338 

300

274 

244 

236 

240 

274

316 

380 

488 

596 

540

555 

502 

532 

570 

548

481 

412 

373 

300 

278

July

256 

248 

220 

216 

224

232 

220 

208 

200 

192

188 

204 

200 

180 

173

158 

155 

144 

148 

158

151 

141 

134 

134 

155

180 

158 

144 

131 

138 

122

Minimum

35 

33 

31

22

28 

32 

41 

61 

256 

236 

122 

90 

60

28

Aug.

104 

104 

101 

101 

9S

104 

112 

131 

138 

148

158 

138 

115 

115 

155

155 

169 

158 

138 

134

128 

128 

115 

112 

101

96 

96 

90 

98 

107 

90

Mean

39.8 

38.7 

33.4

46.8

32.1 

37.6 

49.5 

83.3 

463 

398 

178 

121 

72.3

129

Sept.

85 

83 

76 

76 

74

72 

67 

78 

81 

72

65 

60 

63 

67 

63

60 

60 

63 

65 

63

61 

65 

101 

81 

74

74 

72 

74 

83 

90

Run-off In 

acre-feet

2,450 

2,300 

2,050

34,010

1,970 

2,090 

3,050 

4,960 

28,480 

23,660 

10,930 

7,410 

4,300

93,650

* Winter discharge measurement made on this day.

a NO gage-height record; discharge computed on basis of records for Tomlchl Creek at Sargents.

Kote.- Stage-discharge relation affected by Ice Nov. 10 to Apr. 20.
TRIBUTARIES ABOVE OREEN RIVER 89

Lake Fork at Gatevlew, Colo.

Location.- Water-stage recorder, lat. 38°07'50", long. 1070 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 7,833.02 feet above mean 

sea level, unadjusted.

Drainage area.- 324 square miles.

Records available.- April 1938 to September 1941.

Extremes.- Maximum discharge during year, 2,500 second-feet June 24, from rating curve 

extended above 1,800 second-feet; maximum gage height, 3.91 feet June 19; minimum 

dally discharge not determined, occurred during period of ice effect.

1938-41: Maximum discharge, 2,620 second-feet June 21, 1938 (gage height, 5.00 

feet), from rating curve extended above 1,800 second-feet; minimum daily discharge, 

31 second-feet Jan. 15, 16, 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 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

S2 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

118 

115 

115 

108 

110

120 

118 

115 

112 

108

103 

99 

95 

93 

89

87 

85 

85 

83 

81

80 

78 

76 

74 

72

71 

76 

72 

69 

69 

66

Nov.

*62 

66 

67 

67 

58

64 

62 

62 

62 

64

52 

56 

49 

45 

48

50 

51 

52 

52 

50

50 

50 

49 

49 

49

50 

50 

49 

48 

48

Dec.

45

Jan.

> 48 

(*)

Feb.

(*) 

42

Month

Oet 

Non 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

1

alendar year 1940. ..............

ater year 1940-41

liar.

(*) 

43

Apr.

54 

62 

60 

56 

54

54 

62 

58 

60 

64

62 

71 

67 

54 

55

64 

66 

62 

56 

54

*58 

56 

55 

55 

60

66 

81 

95 

103

122

Secondfoot -days

2,842 

1,631 

1,395

59,436

1,488 

1,176 

1,333 

1,946 

21,553 

38,979 

24,358 

7,615 

5,233

109,549

May

138

128 

152 

197 

203

236 

266 

328 

457 

620

809 

1,020 

1,330 

1,590 

1,250

950 

996 

1,160 

1,170 

790

610 

542 

501 

510 

666

822 

1,050 

950 

764 

688 

660

Maximum

120 

67

1,130

122 

1,590 

2,190 

1,250 

330 

382

2,190

June

734 

891 

1,140 

1,140 

1,140

1,130 

1,140 

972 

746

610

519 

457 

470 

605 

728

877 

1,250 

1,810 

2,090 

2,090

2,000 

1,970 

2,100 

2,190 

2,020

2,010 

1,850 

1,660 

1,370 

1,270

July

1,250 

1,240 

1,210 

1,230 

1,140

982 

974 

950 

1,030 

950

990 

91S 

902 

821 

751

676 

670 

694 

712 

688

610 

562 

550 

568 

604

540 

510 

470 

422 

386 

358

Minimum

66 

45

31

54 

128 

457 

358 

154 

120

-

Aug.

330 

310 

290 

268 

268

261 

310 

306 

310 

322

318 

306 

279 

261 

268

268 

268 

258 

239 

227

216 

214 

198 

186 

176

170 

163 

154 

154 

161 

156

Mean

91.7 

54.4 

45.0

162

48.0 

42.0 

43.0 

64.9 

695 

1,299 

786 

246 

174

300

Sept.

150 

145 

139 

136 

133

133 

126 

130 

130 

124

124 

120 

124 

139 

a!56

a!45 

a!40 

alSO 

a!95 

a!75

a!70 

279 

382 

302

251

227 

214 

198 

198 

198

Run-off in 

acre-feet

5,640 

3,240 

2,770

117,900

2,950 

2,330 

2,640 

3,860 

42,750 

77,310 

48,310 

15,100 

10,380

217,300

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for TJncompahgre River at Colona .

Hote.- Stage-discharge relation affected by ice Hov. 14 to Apr. 5.
90 TRIBUTARIES ABOVE GREEN RIVER

Smith Fork near Crawford, 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, 6 miles northeast of Crawford. Altitude of gage, 

7,200 feet (by barometer).

Drainage area.- 42.3 square miles.

Records available.- February to September 1941.

Extremes.- Maximum discharge during period, 513 second-feet May 13 (gage height, 3.80 

reet;, from rating curve extended above 430 second-feet; minimum daily, 2.0 secondfeet Feb. 11.

Remarks.- Records fair. A few small diversions above station.

Cooperation.- Gage-height record and results of discharge neasurements Feb..? to Aug. 31 

f .irnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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.

2.9 

2.6 

2.3 

2.1

2.0 

2.2 

2.4 

2.5 

2.6

2.7 

2.8 

2.9 

3.0 

3.1

3.2 

3.4 

3.S 

4.4 

5.2

6.0 

6.4

10

Month

Oct 

NO'S 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Ser

I

alendar year

ruary "7 ss

 he perlo

Mar.

11 

11 

11 

12 

11

9.7 

9.7 

12 

10 

9.4

9.4 

10 

9.7 

9.4 

9.4

9.4 

10 

12 

16 

22

21 

24 

25 

25 

20

18 

16 

17 

19 

20 

22

Apr.

28 

26 

25 

22

29

29 

26 

25 

27 

34

37 

59 

73 

54 

52

53 

51 

44 

39 

36

35 

40 

53 

84 

105

137 

166 

148 

167 

183

Secondfoot-days

78.2 

451.1 

1,887 

7,334 

3.341 

1,188 

495 

587.5

-

May

1S5 

192 

219 

231 

239

269 

266 

306 

338 

322

354 

362 

422 

344 

228

179 

215 

242 

237 

183

162 

159 

174 

194 

222

242 

253 

185 

132 

140 

138

Maximum

10 

25 

183 

422 

151 

67 

22 

33

-

June

134 

137 

142 

140 

138

134 

145 

151 

132 

138

111 

110 

108 

108 

105

105 

1O8 

125 

128 

112

100 

93 

93 

89 

87

84 

79 

73 

67 

65

July

67 

58 

53 

51 

47

43 

36 

48 

60 

57

52 

47 

44 

42 

41

40 

35 

33 

34 

35

31 

28 

27 

25 

24

22 

22 

21 

23 

22 

20

Minimum

2.0 

9.4 

22 

132 

65 

20 

11 

9.4

-

Aug.

20 

18 

18 

18 

17

18 

17 

17 

20 

22

20 

18 

16 

16 

17

21 

19 

18 

16 

15

14 

14 

13 

12 

12

12 

11 

11 

12 

12 

11

Mean

3.55 

14.6 

62.9 

237 

111 

38.3 

16.0 

19.6

-

Sept.

11 

10 

9.7 

9.7 

9.7

9.4 

10 

16 

14 

13

12 

11 

16 

 32 

23

20 

18 

20 

20 

Cl9

Cl8 

c25 

c32 

c32 

c31

030 

C28 

C26 

c29 

c33

Run-off In 

acre-feet

155 

895 

3,740 

14,550 

6,630 

2,360 

982 

1,170

30,480

c Backwater from beaver dam; discharge computed on basis of records for Anthracite Creek near 

Floresta.
TRIBUTARIES ABOVE GREEN RIVER 

East Muddy Creek near Bardlne, Colo.

91

Location.- Water-stage recorder, lat. 39°01', long. 107°22', In sec. 17, T. 12 S., R. 89

 V., a quarter of a mile downstream tram Spring Creek and 6i miles above Bardlne.

Drainage area.- 136 square miles.

Records available.- May 1935 to September 1941 (no winter records).

Extrenes.- Maximum discharge during year, 2,190 second-feet May 13 (gage height, 3.41

 reet), from rating curve extended above 800 second-feet; minimum dally discharge not 

determined, occurred during period of 4ce effect.

1935-41: Maximum discharge, that of May 13, 1941; minimum dally, 6 second-feet 

Aug. 28, 1936.

Remarks.- Records excellent except those for period of Ice effect, which are fair. 

Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 tc September 1941

Day

1 

2 

3

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

29 

24 

25

26 

27 

28 

29 

30 

31

Oct.

32

29 

25 

22

31

36 

29 

25 

25 

23

22

20

20 

19 

16

16 

IS 

IS 

16 

16

16 

16 

16 

15 

15

16 

20 

IS 

16 

16 

16

HOT.

16 

16

IS 

19 

IS

 16 

19 

19 

ISie

Dec. Jan. Feb.

Month

oot 

Nei 

Dec

C

Jar 

Fet 

Max

Api 

Ma] 

Jur 

Ju3 £*Sej 

I

renber 1

alendar year

 11. ....................................

later year

Her.

17 

19 

16 

16 

15

 14 

14 

14 

14 

12

14

13 

14 

IS 

14

14 

15 

17 

21 

27

30 

S3 

36 

34 

32

28 

25 

27 

30 

32 

36

Apr.

50 

42 

41 

40 

43

41 

37 

35 

41 

54

52

70 

82 

76 

*72

69 

64 

60 

56 

54

56 

67 

79 

111 

144

170 

257 

289 

270 

296

Seccndf cot-days

651

177

-

~660 

2,822 

24,120 

6,120 

1,914 

1,104 

970

-

May

330 

345 

522 

760 

550

556 

566 

750 

880 

1,080

1,200 

1,340 

1,700 

1,560 

1,250

1,010 

1,020 

1,020 

850 

606

614 

657 

630 

622 

614

666 

630 

SSS 

472 

431 

424

Maximum

38 

19

-

36

298 

1,700 

396 

122 

62 

55

-

«Fun6

398 

374 

374 

345 

356

330 

380 

398 

340 

305

264 

22S 

214

203 

206

214 

228 

255 

278 

273

864 

250 

260 

305 

242

210 

1S6 

166 

147 

131

July

182 

113 

106 

100 

95

90 

90 

80 

76 

71

69 

67 

60 

57 

53

51 

49 

44 

44

49

43

40 

36 

41 

41

40 

40 

36 

36 

36 

36

Minimum

15 

16

-

12 

35 

530 

121 

36 

31 

26

-

Aug.

36 

36 

36 

36 

36

38 

37 

36 

46 

62

37 

34 

32 

31 

31

37 

37 

42 

37 

36

34 

34 

33 

32 

32

31 

31 

31 

31 

32 

31

Mean

21.0 

17.7

-

21.3 

94.1 

77S 

271 

61.7 

35.6 

32.3

-

Sept.

30 

30 

30 

50 

29

29 

29 

29 

26 

SB

28 

28 

34 

55 

36

32 

31 

32 

33 

32

30 

32 

35 

37 

36

35 

33 

32 

32 

35

Run-off In 

acre-feet

1,290

351

-

1,310 

5,600 

47,840 

16,110 

3,800 

2,190 

1,920

-

* Winter discharge measurement made on this day.

Mote.- Stage-discharge relation affected by Ice Mar. 1 to Apr. 14.

461676 O-42-7
92 TRIBUTARIES ABOVE GREEN RIVER

North Forte of Ounnlson River" near Somerset, Colo.

Location.- Water-stage recorder, lat. 38°56', long. 107°26', In sec. 10, T. 13 S., R. SO 

w., 2 miles east of Somerset.

Drainage area.- 521 square miles.

Records available.- March 1934 to September 1941.

Extremes.- Maximum discharge during year, 5,850 second-feet May 13 (gage height, 6.30 

 feet), from rating curve extended above 3,200 second-feet; minimum dally, 42 secondfeet Dec. 14, 15. ,

1934-41: Maximum discharge, that of May 13, 1941; minimum dally, 28 aecond-feet 

Sept. 19, 1934.

Remarks.- Records excellent except those for period of Ice effect, which are fair. 

DlveTelons above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 '19 

20

21 

22 

S3 

24 

25

26 

27 

28 

29 

30 

31

Oct.

214 

172 

159 

140 

146

214 

178 

159 

149 

143

130 

118 

112 

103 

9S

112 

124. 

121 

118 

115

109 

93 

81 

81 

78

7S 

100 

93 

83 

S6 

86

NOT.

76 

76 

81 

100 

72

 86 

86 

83 

S6 

93

68 

75 

44 

50 

57

61 

63 

66 

6S 

66

66 

63 

59 

56 

52

49 

47 

51 

53 

54

Dee.

54 

54 

52 

52 

54

54 

54 

52 

52 

54

55 

50 

45 

42 

42

4S 

52 

54 

54 

54

50 

47 

48 

50 

54

52 

*52 

52 

54 

54 

54

Jan.

50 

47 

45 

45 

48

52 

54 

54

se

63

56 

58 

60 

62 

60

62 

60 

66 

61 

65

58 

SS 

58 

58 

58

56 

»61 

SS 

63 

65 

65

Feb.

62 

56 

63 

66 

69

70 

70 

6S 

66 

66

66 

66 

66 

65 

65

66 

65 

66 

6S 

66

69 

72 

70 

78 

76

72 

66 

62

Month

Oct 

Non 

Dec

C

Jan 

Pel 

Max 

Api 

Maj 

Jur 

Jul

Aug

Sei

n

alendar year 194 0. .....................

£;::::::::::::::::::::::::::::::::::::

ater year 1940-4 1.. ....................

Mar.

88 

95 

83 

72 

81

73 

70 

66 

73 

58

75 

62 

69

el

72

72 

76 

98 

130 

152

156 

175 

201 

184 

165

146 

140 

165 

175 

181 

201

Apr.

286 

225 

214 

214 

247

221 

197 

191 

225 

306

29S 

411 

470 

3 SO 

394

3S5 

359 

318 

290 

256

271 

318 

416 

61S 

808

979 

1,340 

1,560 

1.540 

1,690

Secondfoot -day a

3.793 

2,009 

1,595

121, 9S8

1,763 

1,880 

3,535 

15,427 

90,430 

49,770 

14,658 

4,657 

4,000

193,522

May

1,780 

2,520 

2,430 

3,040 

2,480

2,380 

2,360 

2,690 

3,420 

3,660

3,960 

4,300 

4,800 

4,490 

3,S10

3,240 

3,350 

3,450 

3,090 

2,360

2,300 

2,440 

2,440 

2,560 

2,710

2,S10 

2,S20 

2,420 

2,170 

2,060 

2,090

Maximum

214 

100 

55

2,500

66 

78 

201 

1,690 

4,800 

2,140 

952 

252 

294

4,800

June

1,970 

1,950 

1,950 

1,930 

1,960

1,S70 

2,060 

2,140 

1,780 

1,690

1,380 

1,220 

1,150 

1,200 

1,280

1,470 

1,590 

1,810 

1,970 

1,910

1,840 

1,870 

1,880 

1,920 

1,700

1,570 

1,390 

1,260 

1,130 

1,030

July

952 

856 

84S 

824 

776

706 

6S5 

671 

644 

5S5

531 

4S6 

455 

430 

411

389 

36S 

351 

3S5 

455

359 

314 

294 

2S6 

279

260 

249 

224 

206 

196 

163

Minimum

78 

44 

42

35

45 

56 

58 

191 

1,780 

1,030 

183 

109 

71

42

Aug.

170 

157 

151 

148 

145

151 

167 

206 

227 

252

186 

164 

164 

142 

145

154 

164 

173 

157 

154

136 

127 

US 

109 

112

112 

115 

109 

112 

121 

109

Mean

122 

67.0 

51.5

333

57.0 

67.1 

114 / 

514 

2,917 

1,659 

473 

150 

133

530

Sept.

103 

97 

86 

78 

74

73 

71 

124 

112 

97

90 

88 

109 

294 

203

151 

127 

133 

139 

127

115 

127 

183 

180 

173

170 

164 

14 S 

151 

213

Run-off In 

acre-feet

7,520 

3,980 

3,160

242,000

3,510 

3,730 

7,010 

30,600 

179,400 

98,720 

29,070 

9,240 

7,930

383,900

* Winter discharge measurement made on this day.

»ote.- Stage-discharge relation affected by Ice Nov. 14 to Jan. 11.
TRIBUTARIES ABOVE GREEN RIVER 

Anthracite Creek near Floresta, Colo.

93

Location.- Water-stage recorder, lat. 38°52', long. 107°09', in sec. 6, T. 14 S., R. 87

 W., at Horse Ranch, 1 mile below Bracken Creek, 2 miles northwest of old Floresta, 

and 9 miles west of Crested Butte.

Drainage area.- 17.5 square miles. 

Records available.- May to September 1941.

Extremes.- Maximum discharge during period, 488 second-feet June 18 (gage height, 4.46

 feet), from rating curve extended above 290 second-feet; minimum daily, 2.5 secondfeet Sept. 6.

Remarks.- Records good. One small transmountaln diversion above station to Coal Creek.

Cooperation.- Gage-height record and results of discharge measurements May 17 to Aug. 31 

rurnisnea by Bureau of Reclamation.

Discharge, In seoond-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

S

6 

7 

S 

9 

10

11 

IS 

13 

14 

IS

16 

17 

18 

19 

80

81 

22 

S3 

84 

25

'26 

27 

28 

29 

30 

31

Oct. Nov. Deo. Jan. Feb.

Month

Oet 

No\ 

Dec

C

Jar 

Fel 

Mai 

Apr 

Maj 

Jur 

Jul 

Au« 

Sej

T

alendar year

he perlo

liar. Apr.

Secondfoot-days

3,752 

7,074 

2,037 

265.3 

212. 9

-

Hay

301 

311 

251 

. 184

801 

825 

234 

85S 

388

316 

262 

214 

205 

816 

238

Maximum

328

371 

146 

15 

19

~

June

221 

230 

225 

239 

853

253 

851 

234 

ISO 

150

132 

US 

119 

146 

17S

216 

256 

329 

371 

348

329 

340 

348 

311 

275

85S 

885 

805 

1SS 

15S

July

146 

132 

137 

139 

12S

112 

114 

111 

103 

37

77 

71 

60 

57 

54

46 

45 

44 

52 

50

se

32 

30 

28 

27

24 

82 

20 

IS 

16 

15

Minimum

1S4 

118 

15 

3.4 

8.5

Aug.

14 

13 

12 

12 

12

12 

13 

13 

13 

15

12 

11 

9.5 e.4

S.4

6.2 

7.9 

7.7 

7.4 

6.7

6.3 

5.9 

5.4 

5.2 

4.6

3.6 

3.5 

3.4 

3.6 

3.9 

3.5

Mean

250 

236 

65.7 

8.56 

7.10

""

Sept.

3.5 

3.8 

3.0 

8.9 

8.S

2.5 

2.6 

5.8 

4.2 

4.1

3.9

3.6 

5.9 

18e.8

6.5 

5.9 

6.3 

5.9 

5.6

4.9 

S.8 

18 

IS 

IS

IS 

11 

10 

14 

19

Run-off In 

acre-feet

7,440 

14,030 

4,040 

526 

488

86,460
94 TRIBUTARIES ABOVE GREEN RIVER

Leroux Creek near Cedaredge, Colo.

Location.- Water-stage recorder, lat. 38°55', long. 107°48', in ssc. 16, T. 13 S., R. 93

 30 fset upstream from head gate of Overland ditch and 7.2 miiss northeast of 

sdge.

Drainage area.- 43.0 square miles.

Records available.- October 1936 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 1,240 second-feet May 13 (gage height, 5.02

 feet)," from rating curve extended above 550 second-feet; minimum daily not determined, 

occurred during period of ice effect.

1936-41: Maximum discharge, that of May 13, 1941; minimum dally not determined, 

occurred during period of ice effect.

Remarks.- Records excellent except those for periods of Ice effect or no gage-height 

record, which are fair. One sniall diversion and several small reservoirs above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

S

6

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

23 

29 

30 

31

Oct.

44 

45 

50 

33 

67

65 

50 

44 

44 

41

SS 

35 

32 

27 

24

22 

21 

20 

19 

17

17 

15 

15 

13 

12

13 

14 

14 

13 

13 

13

HOT.

12 

13 

13 

12 

10

*14 

12 

12 

11 

9.5

b9.0 

b8.5 

b8.0 

bB.5 

b9.0

b9.5 

blO 

10 

9.7 

9.2

9.2 

9.2 

9.0 

9.2 

9.2

9.2 

9.5 

8.8 

8.5 

8.3

Dec. Jan. Feb.

Month

Oct 

Hoi 

Dec

C

Jar 

Fat 

Mar

Apr

Jur 

Jul 

Aug 

Set

71

alendar year

il 7-30

ater year

Mar. Apr.

15 

16 

16 

21

19 

20 

21 

19 

20

20 

IS 

17 

17 

. 17

19 

22 

27 

41 

53

67 

75 

79 

73 

107

Secondfoot -days

895

300.0

-

819 

12,310 

6,657 

1,486 

863 

848

-

May

110 

115 

143 

219 

16S

164 

172 

267 

402 

352

409 

604 

S84 

765 

517

464 

555 

572 

362 

298

344 

423 

476 

445 

464

577 

509 

394 

325 

404 

362

Maximum

67 

14

-

107 

884 

563 

68 

34 

84

-

June

337 

349 

349

310 

29S

280 

563 

369 

260 

235

203 

182 

1S2 

180 

178

182 

182 

205 

225

235

1S6 

172 

172 

184 

147

124 

110 

94 

85 

74

July

68 

62 

58 

57 

57

56 

60

67 

68 

62

5S 

54 

54 

52 

51

52

50 

43 

45 

3S

37 

34 

33

37 

42

33 

32 

31 

31 

30 

31

Minimum

12

S.O

-

15 

110 

74 

30 

22 

14

-

Aug.

30 

29 

23 

29 

30

a33 

a32 

a2S ' 29

30

26 

23 

22 

24 

30

34 

34 

33

26 

24

26 

28 

27 

26 

26

26 

27 

27 

26 

26 

24

Mean

28.9 

10.0

-

34.1 

397 

222 

47.9 

27.8 

28.3

-

Sept.

23 

22 

20 

19 

20

19 

20 

29 

22

18

15 

14 

42 

84 

43

30 

24 

30 

26 

21

18 

21 

26 

26 

38

47 

38 

30 

30 

35

Run- off In 

acre-feet

1,780 

595

-

1,620 

24,420 

13,200 

2,950 

1,710 

1,680

-

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of recorded range In stage and records for 

Surface Creek near Cedaredge, Colo.

b Stage-discharge relation affected by Ice.
TRIBUTARIES ABOVE GREEN RIVER 95

Surface Creek below Park Reservoir, near Grand Mesa, Colo.

Location.- Water-stage recorder, lat. 39°03', long. 107°52', In NWi sec. 2, T. 12 S., R.

 94 W., a quarter of a mile downstream from outlet of Park Reservoir and 4* miles east 

of Grand Mesa.

Drainage area.- 7.8 square miles.

Records available.- June to September 1941.

Extremes.- Maximum discharge during period, 99 second-feet June 7 (gage height, 2.92

 feet),' from rating curve extended above 70 second-feet); minimum dally, 0.5 secondfoot Sept. 2-30.

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

Cooperation.- ape, Gage-height record and results of discharge raeasurements May 31 to Aug. 31

fumisnea by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

6 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27

26 

29 

30 

31

OCt. NOT. Dec. Jan. Feb.

Month

Oet 

Moi

Dei

(

Jai 

Pel 

Mai

$ Jui

Ju] 

A-i 

Se]

Calendar year

>

Ly.. ....................................

Dhe peri

Mar. Apr.

Secondfoot-days

1,566 

1,437 

674.6 

16.1

-

May

68

Maximum

95 

65 

44 

1.6

-

June

64 

66 

63 

65 

69

70 

95 

65 

66 

54

41 

29 

34

47

S3

57 

57 

56 

52 

46

45

47 

4S 

47 

43

S7 

33 

32

30 

23

July

27 

26 

25 

24 

25

53 

5S 

61 

61 

60

64 

65 

65 

26 

25

52 

45 

36

33 

5S

50 

50 

50 

52

51

50 

50 

50 

46 

47 

45

Minimum

2S 

24 

6.5 

.5

-

Aug.

36 

44 

41 

41 

40

39 

36 

S6 

34

S5

32 

30 

23 

25 

83

17 

16 

14 

12 

11

9.2

S.2 

7.5 

6.5

e.s

7.2 

6.5 

6.5 

S.O 

6.0 

S.5

Mean

52.2 

46.4 

21. S 

.64

-

Sept.

1.6 

.5 

.S 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5- 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.S 

.5

Run-off in 

acre-feet

3,110 

2,660 

1,540 

38

7,330

Bpte.- Ho gage-height record Sept. 3-30; discharge computed on basis of one discharge 

tent and report of water commissioner.
96 TRIBUTARIES ABOVE OREEN RIVER

Surface Creek near Cedaredge, Colo.

Location.- Water-stage recorder, lat. 3S°59' , long. 107°51', in NWjNWi sec. 12, T. 12 S., 

R. 94 W., 1 mile downstream from Caesar Creek and 8i miles northeast of Cedaredge.

Drainage area.- 28.5 square miles.

Records available.- June 1939 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 573 second-feet May 12 (gage height, 3.62 feet), 

 from rating curve extended above 300 second-feet; minimum not determined, occurred during period of ice effect.

1939-41: Maximum discharge that of May 12, 1941; minimum daily, 5.S second-feet

Sept. 23, 1939, but probably less during period of no record.

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

Discharge regulated by many small reservoirs.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

S>

6 

1 

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.

a56 

a52 

44 

37 

61

52 

42 

34 

34 

33

31 

29 

24 

21 

19

18 

17 

21 

20 

30

19 

18

15 

15 

14

15 

a22 

alS 

a!3 

a!9 

al6

Nov.

a!6 

16 

12 

11 

16

14 

12 

10

Dec. Jan. Feb.

Month

Oct 

Noi

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

m

ober

ember 1-

alendar year

ater year

liar. Apr.

Secondfoot-days

S49 

107

-

6,719 

6,214 

2,440 

1,589 

1,067

-

May

a60 

a70 

a94 

al40 

a!20

allO 

al25 

a!70 

a230 

244

277 

295 

386 

325 

220

229 

235 

268 

214 

175

1S4 

190 

196 

199 

211

223

337 

331 

286 

295 

280

Maximum

61 

16

-

3S6 

325 

105 

68 

55

-

June

301 

298 

268 

226 

235

232 

325

313 

280 

253

214 

190 

193 

208 

211

214 

208 

211 

2O5 

190

1S1 

172 

168 

170 

152

137 

125 

122 

111 

101

July

90 

91 

S7 

S5 

80

105 

101 

105 

105 

98

9S 

100 

97 

68 

63

77 

72 

67 

65 

71

67 

66 

66 

71 

71

6S 

6S 

61 

59 

59 

59

Minimum

13 

10

-

60 

101 

59 

38 

19

-

Aug.

51 

56 

56 

59 

63

66 

67 

57 

62 

61

55 

47 

43 

42 

49

55 

53 

45 

3S 

43

45 

49 

48 

48 

47

49 

48 

45 

47 

46 

47

Mean

27.4 

13.4

-

217 

207 

78.7 

51.3 

35.6

-

Sept.

44 

41 

42

46

45

46 

48 

46 

45 

43

39 

29 

48 

55 

38

29 

26 

26 

23 

22

19 

29 

26 

23 

aSO

aSS 

a33 

aSO 

29 

89

Run-off In 

acre-feet

1,680 

212

-

13,330 

12,330 

4,840 

3,150 

2,120

-
TRIBUTARIES ABOVE GREEN RIVER 97

Surface Creek at Cedaredge, Colo.

Location.- Water-stage recorder and concrete control, lat. 38°52', long. 107°55', In 

sec. 20, T. 13 S., R. 94 W., at Cedaredge.

Drainage area.- 43 square miles.

Records available.- May 1917 to September 1927 and October 1933 to September 1941 In re- 

 ports of U. S. Geological Survey. May 1917 to September 1941 In reports of State engineer.

Average discharge.- 24 years, 31.1 second-feet.

Extremes.- Maximum discharge during year, 1,190 second-feet May 13 (gage height, 2.50 

feet), from rating curve extended above 640 second-feet; minimum discharge observed, 

1.3 second-feet Jan. 27 (discharge measurement), probably less during period of Ice 

effect.

1917-41: Maximum discharge, that of May 13, 1941; no flow Sept. 25, 1939, and 

practically no flow at times during some winters.

Remarks.- Records good except those for period of Ice effect, which are fair. Flow regulated by many reservoirs. Water Is diverted Into Surface Creek Basin from adjacent 

streams. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S ' 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.

29 

30 

29 

23 

47

41 

27 

21 

21 

20

IS 

16 

14 

12 

11

9.6 

9.0 

7.2 

6.0 

5.1

5.1 

6.0 

5.1 

6.6 

7.8

S.4 

11 

9.6 

9.0 

9.6 

10

Nov.

11 

10 

9.6 

10 

11

10 

*9.6 

S.4 

7.S 

7.8

7.0 

4.0 

3.5 

3.7 

4.0

4.3 

4.5 

4.7 

4.7 

4.3

3.7 

3.4 

3.2 

3-1 

3.2

3.1 

3.0 

2.9 

3.0 

3.3

Dec.

 2.2

Jan.

' 1.4 

(«)

Feb.

1.6 

1.6 

1.5 

1.4 

1.3

1.3 

1.4 

1.4 

1.5 

1.5

1.5 

*1.6 

1.4 

1.4 

1.4

1.4 

1.5 

1.5 

1.5 

1.5

1.5 

1.5 

1.5 

1.5 

1.5

2.0 

3.0 

5.0

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Her 

Apt 

Maj 

Jur 

Jul 

Aug 

Set

K

alendar year 194 0... ...................

ater year 1940-4

Her.

2.0 

1.5 

2.0 

2.0 

1.4

1.4 

*2.0 

2.0 

2.5 

1.5

4.5 

3.0 

2.0 

2.5 

2.5

3.0 

2.0 

2.5 

3.5 

4.5

4.0 

5.0 

6.5 

6.0 

5.0

4.5 

4.5 

5.0 

5.5 

5.5 

7.2

Apr.

11 

S.4 

6.5 

7.2 

9.1

7.2 

6.0 

6.0 

7.2 

11

3.4 

9.8 

9.1 

8.4 

9.1

9.8 

8.4 

S.4 

3.4 

9.1

8.4 

9.1 

10 

16 

23

37 

54 

62 

65 

S6

Secondfoot-days

484.1 

171. S 

68.2

6,902.3

43.4 

46.6 

107.0 

539.0 

7,061 

3,136 

1,043 

600.6 

52S.O

13,333. 7

May

92 

104 

149 

246 

176

169 

190 

234 

355 

369

376 

465 

553 

404 

290

240 

273 

251 

194 

143

146 

146 

149 

143 

137

143 

190 

199 

165 

162 

158

Maximum

47 

11

12S

5.0 

7.2 

S6 

553 

251 

51 

37 

51

553

June

155 

137 

131 

118 

109

100 

235 

251 

208 

165

118 

98 

94 

100 

102

100 

94 

86 

76 

62

55 

54 

60 

70 

63

5S 

62 

63 

60 

52

July

46 

44 

39 

37 

34

42 

37 

44 

45 

49

43 

51 

51 

37 

37

44 

37 

32 

30 

26

19 

19 

19 

23

2S

28 

27 

22 

20 

17 

16

Minimum

5.1 

2.9

-

1.3 

1.4 

6.0 

92 

 52 

16 

9.8 

4.0

-

Aug.

14 

16 

15 

18 

23

22 

IS 

16 

26 

37

2S 

26 

24 

22 

23

35 

25 

23 

19 

15

14 

15 

14 

16 

18

14 

9.3 

9.S 

13 

16 

16

Mean

15.6 

5.73 

2.2

18.9

1.4 

1.66 

3.45 

1S.O 

22S 

105 

33.3 

19.4 

17.6

37.9

Sept.

16 

13 

14 

14 

12

16 

20 

16 

14 

14

14 

13 

30 

51 

24

21 

22 

16 

7.2 

4.0

7.8 

16 

16 

15 

26

32 

23 

14 

13 

14

Run-off in 

acre-feet

960 

341 

135

13, 6SO

S6 

92 

212 

1,070 

14,010 

6,220 

2,OSO 

1,190 

Ir050

27,450

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected by ice Nov. 11 to Feb. 23.
98 TRIBUTARIES ABOVE GREEN RIVER

Uncompahgre River at Colona, Colo.

Location.- Water-stage recorder, lat. 38°19'50", long. 107°46'40", in NWi sec. 17, T. 47 

N., R. 8 W., a quarter of a mile east of Colona.

Drainage area.- 437 square miles.

Records available.- March 1935 to September 1941. April 1903 to June 1906, April 1917 

to rlovember 1934, at site 3 miles upstream.

Extremes.- Maximum discharge during year, 2,540 second-feet June 23 (gage height, 3.50 

reet), from rating curve extended above 1,800 second-feet; minimum daily, 62 secondfeet Jan. 4, Feb. 2.

1903-6, 1917-41: Maximum daily discharge, 4,080 second-feet June 13, 14, 1921; 

nininum daily, 16 second-feet Sept. 3, 1913.

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

wnich are fair. Diversions above station for irrigation.

Cooperation.- Gage heights and results of most of discharge measurements furnished by 

Uncompahgre Valley Water Users' Association.

Discharge, In aeoond-feet, water year October 1940 to September 1941

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.

230 

223 

203 

188 

255

334 

250 

227 

231 

223

195 

184 

178 

170 

164

160 

153 

146 

142 

139

139 

136 

136 

136 

IBS

125 

160 

150 

139 

153 

139

NOT.

125 

128 

122 

US 

100

102 

96 

100 

98 

102

84 

86 

78 

94 

112

115 

1EO 

122 

122 

1E2

115 

115 

HE 

102 

96

96 

SO 

96 

93 

98

Dec.

96 

93 

96 

96 

94

96 

94 

90 

88 

84

34 

76

77:

*76 

74

72 

90 

66 

84 

35

84 

86 

«93 

93 

76

74 

72 

76 

72 

72 

74

Jan.

68 

64 

64 

62 

66

70 

74 

78 

76 

76

76 

76 

77 

7S 

82

32 

84 

«74 

72 

73

73 

74 

74 

*76 

76

76 

74 

74 

76 

74 

70

Feb.

63 

62 

«66 

78 

88

90 

SS 

64 

80 

80

80 

32 

34 

84 

88

86 

86 

36 

88 

86

86 

88 

92 

96 

96

88 

78 

84

Month

Got 

No\

Dec

C

Jar 

Fet 

Man 

Apr

Jui 

Ju3 

Aug 

Sei

1

alendar year 19 10. .....................

fater year 1940-"

Mar.

96 

94 

88 

SO 

92

90 

92 

38 

aS6 

a84

aS4 

aS4 

a90 

a96 

98

92 

100 

120 

146 

164

164 

170

188 

188 

139

125 

136 

160 

160 

160 

164

Apr.

192 

150 

142 

128 

150

136 

120 

118 

128 

160

150 

156 

150 

132 

142

146 

160 

146 

185 

115

12E

US 

118 

125 

164

192 

280 

346 

400 

496

Secondfoot -days

5,586 

3,158 

2,603

85,297

2,289 

2,342 

3,718 

5,207 

33,892 

35,408 

26,284 

10,531 

6,179

137,197

May

514

508 

766 

1,910 

960

815 

815 

1,020 

1,220 

1,530

1,520 

1,530 

1,650 

1,630 

1,430

1,250 

1,480 

1,580 

1,420 

351

1,020 

746 

730 

851 

1,030

1,070 

1,150 

842 

730 

690 

634

Maximum

334 

128

98

1,350

84 

96 

188 

496 

1,910 

2,050 

1,270 

599 

397

2,050

June

669 

770 

900 

S90 

960

993 

1,020 

1,040 

S24 

797

730 

648 

655 

714 

788

900 

1,120 

1,530 

1,670 

1,660

1,740 

1,730 

 2,050 

1,670 

1,780

1,700 

1,520 

1,430 

1,210 

1,250

July

1,270 

1,190 

1,200 

1,220 

1,110

1,000 

1,050 

1,000 

1,020 

1,030

1,080 

1,030 

940 

824 

770

754 

762 

S06 

842 

797

714 

683 

676 

714 

690

620 

599 

550 

487 

441 

415

Minimum

125

78 

72

40

62 

62 

80 

115 

506 

648 

415 

192 

128

62

Aug.

373 

344 

306 

230 

260

300 

338 

350 

494 

599

501 

467 

379 

397 

428

441 

529 

422 

361 

338

306 

290 

270 

260 

240

225

215 

196 

200 

210 

192

Mean

180 

105 

34.0

233

73. S 

33.6 

120 

174 

1,09S 

1,130 

848 

340 

206

376

Sepfr.

184 

176 

168 

186 

146

139 

128 

150 

142 

136

136 

132 

136 

196 

168

164 

160 

192 

230 

205

192 

385 

397 

316 

295

275 

260 

240 

275 

300

Run- off In 

aore-feet

11,080 

6,260 

5,160

169,200

4,540 

4,650 

7,370 

10,330 

67,220 

70,230 

52,130 

20,890 

12,260

272,100

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge commuted on basis of records for station at Delta.

Mote-- Stage-discharge relation affected by Ice Dec. 15-24, Jan. 3-13, 19-21, 27, 23.
TRIBUTARIES ABOVE GREEN RIVER 99

Uncompahgre River at Delta, Colo.

Location.- Chain gage, lat. 38°45', long. 108°05', in SWi sec. 13, T. 15 8., R. 96 W., 

at west edge of Delta, li miles upstream rrcm mouth. Prior to May 5, 1941, waterstage recorder at site 80 feet downstream at same datum.

Drainage area.- 1,110 square miles.

Records available.- April 1924 to September 1931, September 1938 to September 1941. April 

19U3 to octooer 1923 at site 3i miles upstream.

Extremes.- Maximum discharge during year, 3,730 second-feet May 5 (gage height, 5.90 

feet), from rating curve extended above 1,900 second-feet; minimum diily, 56 secondfeet Feb. 5.

1903-31, 1938-41: Maximum discharge, that of May 5, 1941; minimum daily, 7 secondfeet July 10-15, 17, 21, 24-28, 1910.

Remarks.- Records good Oct. 1 to May 5, fair remainder of year. Gage read twice daily 

Hay 9 to Sept. 30. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

1,160 

595 

530 

512 

69S

780 

605 

556 

538 

552

512 

498 

480 

448 

430

426 

408 

394 

394 

3S2

see

342 

334 

246

178

163 

196 

184 

181 

1S1 

175

Nov.

175 

1S1 

178 

181 

178

172 

160 

166 

140 

140

151 

140 

145 

135 

154

163 

172 

175 

190 

169

151 

187 

157 

154 

151

142 

140 

145 

154 

157

Dec.

138 

142 

140 

145 

136

151 

157 

135 

122 

125

135 

130 

120 

98 

98

95 

120 

110 

100 

100

93 

110 

110 

115 

112

102 

95 

105 

102 

IDS 

115

Jan.

118 

102 

95 

83 

100

115 

102 

93 

89 

83

S5 

S3 

91 

S5 

SI

79 

79 

66 

63 

70

72 

75 

70 

68 

. 70

64 

62 

62 

6S 

74 

S7

Feb.

S9 

85 

74 

59 

56

58 

66 

72 

72 

74

75 

93 

95 

S7 

S5

79 

83

102 

IDS 

IDS

93 

100 

105 

102 

110

102 

S5 

72

Month

Oct 

Not

Dec

C

Jar 

Pet 

Itai 

Apr 

Ma} 

Jur 

Ju]

*og 

S«i

1

alendar year 19 10. .....................

y....... ...............................

tater year 1940-

liar.

72 

77 

SI 

78 

70

75 

70 

66 

63 

64

74 

68 

70 

SI 

93

95 

93 

S7 

102 

118

118 

130 

151 

190 

178

130 

125 

128 

138 

128 

132

Apr.

1S4 

229 

214

172 

166

163 

142 

89 

175 

350

394 

350 

370 

302 

232

190 

217 

229 

232 

266

229 

163 

172 

175 

187

238 

394

S02 

791 

S40

Secondfoot-days

13,496 

4,773 

3,666

84,683

2,531

2,389 

3,142 

8,657 

37,352 

27,316 

18,889 

18,920 

18,225

159,796

May

796 

650 

957 

1,830 

2,810

a2,300 

a2,050 

a2,150 

2,310 

1,920

1,890 

2,160 

2,440 

2,110 

1,450

783 

604 

769 

713 

543

501 

477 

388 

382 

644

632 

846 

762 

543 

618 

624

Maximum

1,160 

190 

157

1,160

115 

110 

190 

S40 

2,810 

1,330 

924 

1,410 

2,100

2,810

June

637 

818 

797 

S84 

720

1,090 

949 

1,160 

1,090 

1,160

1,130 

839 

713 

650 

618

699 

692 

762 

994 

734

1,240 

1,190 

1,220 

1,330 

1,260

1,080 

1,040 

762 

598 

460

July

330 

372 

585 

561 

604

513 

525 

637 

720 

657

924 

797 

825 

692 

567

727

644 

664 

755 

916

916 

673 

604 

598 

601

513 

519 

507 

483 

305

see

Minimum

163

135 

93

65

62 

56 

63 

89 

382 

460 

305 

110 

90

56

Aug.

366 

265 

345 

315 

305

366 

598 

1,280 

1,180 

1,410

1,080 

976 

790 

678 

618

1,120 

1,260 

1,160 

967 

734

637 

466 

477 

305 

285

224

166 

118 

110 

150 

170

Mean

433 

159 

118

231

SI. 6 

86.3 

101 

289 

1,221 

911 

609 

610 

608

438

Sept.

170 

126 

134 

90

138

90 

122 

224 

320 

232

3S5 

346 

477 

579 

531

531 

592 

 Sll 

797 

860

734 

908 

2,100 

1,320 

1,100

1,100 

804 

763 

876 

976

Run-off In 

acre-feet

26,650 

9,470 

7,270

168,000

5,020 

4,740 

6,230 

17,170 

75,080 

54,180 

37,470 

37,690 

36,160

317,000

a No gage-height record; discharge coapa&ed on basis of unoubllshed record for Uncompahgre River 

near Olathe.
loo TRIBUTARIES ABOVE GREEN RIVER

Roubldeau Creek near Delta, Colo.

Location.- Water-stage recorder, lat. 38°42', long. 108°09', In sec. 7, T. 51 N., R. 11 

W., 600 feet upstream from Buttermilk Creek and 5i miles southwest of Delta.

Drainage area.- 165 square miles.

Records available.- March 1939 to September 1941 (discontinued).

Extremes.- Maximum discharge during year, 1,760 second-feet May 12 (gage height, 5.25 

feet), from rating curve extended above 1,200 second-feet; minimum dally, 3.8 secondfeet Aug. 4, 5.

1939-41: Maximum discharge, that of May 12, 1941; minimum dally, 0.3 second-foot 

Jan. 18, 19, 1940.

Remarks.- Records good except those for periods of Ice effect, which are fair. A few 

small diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

& 

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.

41

20 

17 

16 

107

50 

24 

18 

15 

14

14 

12 

9.0 

8.2 

7.4

8.6 

B.6 

7.B 

4.9 

- 6.1

5.2 

4.6 

4.6 

4.6 

5.5

B.2 

12 

16 

13 

11 

10

NOT.

9.4 

7.4 

7.8 

11 

11

12 

13 

15

12 

16

17 

12 

9.4 

9.4 

11

9.4 

10 

11 

9.B 

12

14 

14 

13 

13 

12

12 

13 

12 

9.0 

8.6

Dec.

11 

11 

9.4 

6.7 

7.4

6.7 

6.1 

6.7 

7.8 

*7.8

7.8 

B.2 

7.0 

b6.4 

#b5.9

b6.4 

b6.B 

6.7 

7.4 

7.8

b7.4 

b7.0 

b8.6 

«9.4 

10

9.0 

9.0 

11 

11 

11 

11

Jan.

11 

7.0 

b6.6 

b6.4 

l>6.8

b7.2 

b7.6 

bB.O 

t>8.8 

b9.5

blO 

10 

9.8 

12 

9.4

11 

 11 

10 

9.4 

9.0

9.0 

9.4 

B.6 

»9.0 

9.0

B.2 

8.6 

8.6 

B.2 

8.2 

8.2

Feb.

*7.8 

6.1 

b6.0 

b5.8 

b6.8

b7.6 

«bS.4 

10 

9.4 

10

11 

17 

17 

*14 

20

24 

24 

. 21 

25 

26

24 

23 

19 

20 

21

20

11 

11

Month

Oct

Hoi 

Dec

C

Jan 

Fel 

Mar 

Apr 

Maj 

Jux 

Jul 

Aug 

Sej

n

alendar year 194to. .....................

ater year 1940-4

Mar.

14 

17 

18 

14 

15

14 

11

10 

11 

11

12

12 

14 

20 

23

19 

17 

IB 

20 

21

24 

26 

29 

3S 

27

24 

17 

20 

24 

26 

28

Apr.

41 

38 

37 

37 

40

45 

38 

34 

37 

52

57 

66 

77 

64 

57

71 

70 

64 

68 

58

54 

50 

51 

BO 

98

139 

242 

520 

470 

510

Secondfoot -days

503.3 

346.2 

255.4

14,747.2

275.5 

425.9 

594 

3,265 

27,325 

6,374 

393.0 

401. B 

348.6

40,507.7

May

538 

514 

636 

950 

970

960 

975 

980 

1,040 

1,100

1,320 

1,450 

1,500 

1,430 

1,300

1,130 

1,060 

1,020 

BBO

631

662 

658 

708 

739 

685

676 

703 

631 

550 

506 

423

Maximum

107 

17 

11

508

12 

26 

38 

520 

1,500 

502 

32 

34 

72

1,500

June

406 

381 

350 

313 

316

298 

502 

402 

346 

307

268 

230 

215 

198 

200

202 

18S 

174 

159 

145

125 

109 

96 

38 

90

72 

62 

52 

44 

36

July

32 

29 

26 

23 

23

20 

20 

19 

15 

13

13 

12 

14 

12 

11

9.5 

9.0 

7.5 

S.O 

9.0

9.0 

6.5 

6.5 

7.5 

6.0

5.5 

5.5 

6.0 

5.5 

5.0 

5.0

Minimum

4.6 

7.4 

5.9

.3

6.4 

5.8 

10 

34 

423 

36 

5.0 

3.8 

4.1

3.6

Aug.

5.0 

4.4 

4.1 

3.S 

3.S

5.5 

31 

10 

23 

28

17

16 

20 

19 

IS

23 

34 

22 

20 

16

15 

12 

9.5 

9.0 

7.5

4.1 

4.1 

4.4 

4.4 

4.1 

4.1

Mean

16.2 

11.5 

8.24

40.3

B.89 

15.2 

19.2 

109

esi

212 

12.7 

13.0 

11.6

111

Sept.

4.1 

4.4 

4.4 

4.4 

4.1

4.1 

4.1 

4.1 

4.1 

4.1

4.4 

4.4

4.7 

4.7 

7.0

5.5 

5.0 

6.0 

6.5 

B.O

7.5 

72 

47 

25 

22

20 

13 

13 

15 

16

Run-off In 

acre-feet

998 

667 

507

39,250

546 

B45 

1,160 

6,480 

54,200 

12,640 

780 

797 

691

80,350

 if Winter discharge measurement made on this day. 

b Sta^e-dlscharge relation affected by Ice.
TRIBUTARIES ABOVE OREEN RIVER 101

Roubideau Creek at mouth, near Delta, Colo.

Location.- Water-stage recorder, lat. 3S°44', long. 108°09', in sec. 19, T. 15 S., R. 9 

w., naif a mile upstream from mouth and 5 miles west of Delta.

Drainage area.- 245 square miles.

Records available.- March 1939 to September 1941.

Extremes.- Maximum discharge during year, 2,180 second-feet May 13 (gage height, 6.40 

feet), from rating curve extended above 1,200 second-feet; minimum daily, 38 secondfeet Dec. 16.

1939-41: Maximum discharge, that of May 13, 1941: minimum daily, 17 second-feet 

Mar. 20, 1940.

Remarks.- Records good except those for May 5-15 or period of no gage-height record, 

which are fair. A few small diversions above station for Irrigation. Increase in 

discharge between station near Delta and mouth Is mostly return flow from irrigated 

lands under lower end of Ironstone canal.

Discharge, In second-fact, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

149 

117 

102 

96 

307

144 

104 

98 

90 

87

83 

78 

70 

80 

76

70 

72 

72 

67 

67

62 

58 

57 

62 

60

57 

60 

60 

62 

64 

64

HOT.

64 

57 

54 

62 

61

67 

67 

68 

66 

70

70 

67 

58 

57 

58

55 

57 

60 

58 

60

62 

61 

60 

60 

58

58 

56 

57 

52 

52

Dec.

55 

55 

52 

43 

44

44 

41 

41 

45 

46

49 

49 

44 

42 

43

38 

42 

46 

54 

61

55 

55 

54 

53 

64

64 

61 

64 

68 

70 

75

Jan.

75 

5S 

53 

46 

49

49 

46 

48 

49 

50

53 

66 

64 

60 

67

66 

70 

66 

70 

67

76 

80 

70 

68 

72

67 

68 

72 

73 

78 

67

Feb.

67 

62 

57 

67 

6S

72 

73 

76 

72 

72

68 

82 

85 

82 

87

88 

92 

87 

94 

92

67 

88 

85 

85 

88

85 

66 

67

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Mai 

Apr 

Maj 

Jur 

JuJ 

Aug 

Sej

1

alendar year 19'10. .....................

ater year 1940-'

liar.

67 

67 

68 

54 

62

64 

60 

55 

55 

55

54 

54 

58 

66 

73

68 

64 

64 

66 

68

67 

68 

70 

85 

76

68 

61 

62 

72 

70 

75

Apr.

98 

98 

100 

90 

90

96 

63 

68 

83 

128

139 

146 

170 

154 

128

146 

146 

130 

142 

149

144 

128 

125 

159 

173

218 

354 

859 

662 

730

Secondfoot -days

2,695 

1,814 

1,617

36,156

1,963 

2,194 

2,016 

5,936 

34,087 

9,663 

1,900 

3,440 

4,057

71,382

May

754 

734 

, 911 

1,310 

1,290

1,240 

1,350 

1,440 

1,630 

1,680

1,720 

1,730 

1,820 

1,630 

1,330

1,060 

1,080 

1,180 

1,170 

748

710 

688 

776 

884 

860

796 

856 

784 

671 

629 

576

Maximum

307 

70 

75

706

80 

94 

S5 

859 

1,820 

629 

67 

246 

318

1,820

June

a520 

a 460 

a400 

354 

387

369 

629 

59S 

52S 

531

492 

462 

438 

417 

378

372 

360 

321 

275 

224

154 

150 

133 

126 

137

115 

98 

89 

75 

71

July

65 

60 

61 

58 

61

60 

62 

63 

59 

54

55 

59 

64 

67 

63

63 

60 

59 

63 

67

65 

63 

60 

57 

59

62 

64 

63 

55 

62 

67

Minimum

57 

52 

38

17

46 

57 

54 

68 

576 

71 

54 

47 

45

38

Aug.

66 

66 

73 

75 

6S

65 

106 

98 

287 

246

22S 

186 

160 

176 

162

152 

162 

158 

144 

133

105 

75 

64 

60 

57

47 

47 

50 

64 

55 

69

Mean

86.9 

60.5 

52.2

98.8

63.3 

78.4 

65.0 

198 

1,100 

322 

61.3 

111 

135

196

Sept.

56 

50 

46 

46 

46

45 

45 

48 

64 

71

94 

115 

137 

119 

110

140 

150 

176 

172 

162

156 

318 

237 

252 

237

237 

168 

164 

188 

188

Run- off In 

acre-feet

5,350 

3,600 

3,210

71,730

3,890 

4,350 

4,000 

11,770 

67,610 

19,170 

3,770 

6,820 

8,050

141,600

a No gage-height record; discharge commuted on basis of unpublished records for Dry.Creek neap 

Delta.
102 TRIBUTARIES ABOVE GKEEIJ RIVER

Kahnah Creek near Whltewater, 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 or a mile downstream from Intake of pipe lino for 

Grand Junction water supply and 17 miles east or Whitewater.

Drainage area.- 55.0 square miles.

Records available.- October 1917 to Septer.iber 1921 and October 1933 to September 1941 in 

reports of Geological Survey. October 1917 to September 1921 and August 1922 to 

September 1941 in reports of State engineer.

Average discharge (including flow diverted by pipe line above station).- 23 years, 41.7 

second-feet.

Extremes (combined flow).- ffexlnum discharge during year, 517 second-feet June 7, minimum 

dally, 7.6 second-feet Mar. 6-8.

1917-21, 1922-41: 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 dally, 4.3 second-feet Dec. 19, 1939.

Remarks.- Records excellent above 15 second-feet and good below except those for periods 

of ice effect or no ^age-helglit record, which are fair. Figures of flow diverted for 

Grand Junction water supply (obtained from several readings made each day on Clppolettl weir) and Raber ditch furnished by state engineer and added to monthly discharge 

to give total flow of stream. Records of combined flow excellent. Regulation by a 

few snail reservoirs above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

B 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

SO 

31

Oot.

10 

9.4 

10 

8.5 

15

16 

14

14 

13 

13

14 

12 

11 

11 

10

9.4

8.5 

8.5 

S.5 

8.5

8.0 

8.0 

8.0 

7.4 

7.4

8.0 

10 

8.0 

8.0 

8.0 

7.4

HOT.

7.4 

8.0 

9.4 

10 

7.4

8.5 

8.5 

S.S 

8.5 

S.O

6.1

5.3 

5.5 

5.5

5.9 

6.6 

S.O 

7.4 

6.8

6.8 

6.8 

6.3 

6.0 

6.0

6.0 

6.0 

6.0 

6.0 

5.8

Dee.

6.3 

5.8 

5.8 

5.8 

5.2

4.1 

3.6 

4.1 

5.2 

4.1

4.1

3.6 

3.2 

3.2

3.6 

4.0 

4.2 

4.0 

3.6

3.4 

3.2 

3.6 

4.4 

4.6

4.4 

4.2 

4.0 

4.2 

4.4 

5.4

Honth

Dot 

HOT 

Dec

C

Jan 

Fab 

Hap 

Apr 

Hay 

Jun 

Jul 

Aug 

Sep

W

alendar year 1940.

ater year 1940-41.

Jan.

6 

5 

4 

4 

4

4 

4 

5 

5 

4

4

.1:i

.5 

.3.1

.5 

.9 

.1 

.1 

.9

.7

4.7 

4.9 

4.7

4.5 

4.3 

4.3 

4.5 

4.9

4.5 

4.1 

3.9 

3.9 

3.2

3.2 

3.4 

3.4 

3.6 

3.6 

3.6

Feb.

3.6 

3.6 

4.1 

3.6 

3.6

3.6 

3.6 

3.6 

3.6 

3.6

3.6

3.1 

4.1 

4.1

3.6 

3.6 

S.2 

4.1 

3.6

4.1 

3.6 

3.6 

3.6 

4.1

7.4 

5.2 

5.2

Har3.6 

3.6 

3.0 

2.8 

3.0

3.0 

3.0 

3.0 

4.1 

3.6

4.6

4.1 

4.1

3.6

4.6 

5.2 

6.3 

8.0 

8.5

8.5 

11 

9.4 

8.0 

5.8

5.2 

6.3 

6.8 

7.4 

8.0 

13

Apr.

14 

9. 

6. 

5. 

6.

5. 

3. 

3. 

3. 

a7.

a6.

a6. 

6. 

6.

7. 

7. 

6. 

5. 

6.

9. 

9. 

8. 

9. 

11

14 

18 

32 

30 

39

4

3 

8 

3

2 

6 

6 

6 

0

5 

0 

3 

3 

8

4

4 

3 

2 

8

4 

4 

5 

4

Hay

44 

52

6S 

139 

136

144 

142 

162 

180 

189

210 

257 

294 

29S 

265

288 

326 

349 

317 

266

296 

336 

352 

362 

371

443 

433 

412 

382 

382 

375

Observed

Second- . 

foot-days

312.5 

208.1 

133.4

12,193.5

135.2 

113.4 

175.2 

310.5 

8,272 

7,247 

1,065 

685.5 

972

19,629.8

Maximum

16 

10 

6.3

503

6.1 

7.4 

13 

39 

443 

453 

55 

37 

48

453

Minimum

7.4 

5.1 

3.2

1.2

3.2 

3.6 

2.8 

3.6 

44 

66 

24 

8.0 

21

2.8

Mean

10.1 

6.94 

4.30

33.3

4.36 

4.05 

5.65 

10.4 

267 

242 

34.4 

22.1 

32.4

53.8

Run-off ; (acrefeet)

620 

413 

265

24,190

268 

225 

348 

616 

16,410 

14,370 

2,110 

1,360 

1,930

38,940

June

3S2 

385 

36S 

352 

355

365 

453 

342 

278 

253

225 

213 

228 

228 

240

237 

243 

253 

246 

231

216 

198 

177 

168 

147

130 

109 

91 

6S 

66

July

55 

55 

4S 

46 

43

39 

35 

43 

37 

35

34 

34 

35 

39 

30

27 

27 

30 

37 

35

27 

24 

25 

25 

30

32 

30 

30 

25 

26 

27

Diversions 

acre- f set )t

326 

234

307

5,070

249 

248 

279 

335 

808 

678 

613 

502 

467

5,050

Atjg.

34 

35 

37 

32 

20

27 

27 

25 

30 

30

29 

16 

12 

10 

12

16 

21 

20 

17 

20

17 

10 

8.0 

S.O 

8.6

27 

29 

29 

27 

26 

26

Sept.

27 

46 

46 

46 

41

35 

32 

32 

30 

29

27 

21 

29

29 

24

24 

22 

25 

24 

22

21 

48 

44 

43 

44

46 

39 

27 

24 

25

Adjusted for 

diversion

Run-off 

(acre- feet)

946 

647 

572

29,260

517 

473 

627 

951 

17,220 

15,050 

2,720 

1,860 

2,400

43,980

Mean secondfeet)

15.4' 

10.9 

9.30

40.3

8.42 

8.52 

10.2 

16.0 

280 

253 

44.3 

30.3 

40.3

60.8

t Diversions by Grand Junction pipe line and Raber Ditch.

a Ho gage-height record. Discharge confuted on basis of record for Surface Creek at Cedaredge.

Hote.- Stage-discharge relation affected by ice Nov. 11-17, 24-30, Dec. 13 to Jan. 28.
TRIBUTARIES ABOVE GREEN RIVER 103

Dolores River at Dolores, Colo.

Location.- Water-stage recorder, lat. 37°28', long. 108°30', in sec. ,9, T. 37 N., R. 15 

W., at Dolores, a quarter of a mile upstream from Lost Canyon Creek.

Drainage area.- 556 square wiles (revised).

Records available.- June 1895 to October 1903 and August 1910 to December 1912 (at site 

.lust downstream from Lost Canyon Creek), May 1922 to September 1927 (monthly discharge) 

and October 1933 to September 1941 in reports of U. S. Geological Survey. June 1895 

to October 1903, August 1910 to December 1912 and April 1922 to September 1941 in 

reports of State engineer.

Average discharge.- 20 years (1921-41), 477 second-feet.

Extrenes.- Maximum discharge during year, 8,070 second-feet May 14 (gage height, 7.72 

feet), from rating curve extended above 5,300 second-feet; minimum dally, 40 secondfeet Feb. 1-6.

1895-1903, 1910-12, 1922-41: 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 daily, 8 second-feet Aug. 16, 1896.

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 1940 to September 1941

Day

1 

2 

Z 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

30 

31

Oct.

383 

322 

269 

226 

260

646 

410 

333 

287 

260

229

209 

193 

ISO 

167

156 

145 

136 

129 

122

118 

111 

107 

100 

97

96 

131 

129 

113 

105 

96

HOT.

a92 

91 

«92 

a90 

a86

a 85 

a85 

S4 

79 

86

a8S 

a90 

a90 

a90 

allO

a!35 

a!30 

94 

91 

85

78 

72 

70 

68 

67

61 

65 

61 

76 

63

Dec.

56 

56 

47 

45 

46

50 

46 

52 

*48 

51

48 

50 

55 

55 

52

50 

50 

50 

50 

50

52 

52 

52 

52 

52

54 

54 

54 

54 

54 

54

Jan.

56 

56 

56 

56 

«56

56 

56 

55 

53 

51

50 

49 

48 

46 

45

44 

*43 

43 

43 

43

42 

42 

42 

42 

43

42 

42 

41 

41 

41 

41

Feb.

40 

40 

*40 

40 

40

40 

42 

45 

47 

50

52 

55 

60 

62 

64

66 

6S 

70 

72 

75

80 

»84 

80 

84 

79

86 

79 

85

Month

Oct 

Koi 

Dec

C

Jar 

Pel 

Bai 

Api 

Ha, 

Jur 

Ju3 

Au« 

Sej

?later year 1940-'

Bar.

94 

92 

92 

90 

SB

91 

84 

78 

80 

73

73

S2 

96 

98 

97

92 

102 

125 

154 

187

191 

189 

202 

209 

171

176 

189 

219 

246 

281 

367

Apr.

508 

398 

360 

322 

371

341 

329

406 

552 

666

531 

456 

394 

356 

341

337 

322 

311 

291 

260

291 

291 

304 

326 

428

692 

926 

1,020 

1,220 

1,530

Secondfoot -day a

6,265 

2,554 

1,591

115,495

1,463 

1,725 

4,408 

14,868 

105,360 

75,570 

30,108 

7,938 

11,215

863,055

Bay

1,580 

1,510 

1,860 

2,690 

2,380

2,600 

2,S70 

3,210 

3,660 

4,080

4,360 

5,210 

6,360 

6,550 

5,040

4,080 

4,300 

4,600 

4,260 

2,930

2,460 

2,280 

2,560 

3,140 

3,320

3,260 

3,390 

2,940 

2,800 

2,700 

2,380

Maximum

646 

135 

56

1,870

56 

86 

 367 

1,530 

6,550 

3,290 

1,800 

404 

1,460

6,550

June

2,330 

2,390 

2,400 

2,270 

2,420

2,390 

2,720 

2,790 

2,330 

2,050

1,940 

1,860 

1,S40 

1,960 

2,170

2,370 

2,570 

2,930 

3,290 

3,290

3,220 

3,240 

3,180 

3,080 

2,890

2,840 

2,520 

2,400 

2,030 

1,860

July

1,800 

1,770 

1,680 

1,620 

1,560

1,370 

1,360 

1,350 

1,330 

1,190

1,240 

1,120 

1,060 

1,000 

897

855 

814 

784 

760 

736

684 

625 

625 

589 

594

517 

530 

495 

430 

379 

344

Minimum

96 

61 

45

17

41 

40 

73 

260 

1,510 

1,840 

344 

142 

125

40

Aug.

321 

301 

282 

265 

260

284 

318 

307 

357 

404

361 

321 

879 

857 

896

287 

350 

296 

250 

224

209 

197 

187 

176 

166

155 

150 

142 

148 

189 

195

Mean

202 

85.1 

51.3

316

47.2 

61.6 

142 

496 

3,399 

2,519 

971 

256 

374

721

Sept.

161 

148 

138 

158 

150

145 

140 

140 

145 

136

130 

125 

163 

386 

270

226 

187 

273 

469 

318

268 

1,240 

1,460 

808 

700

589 

508 

445 

517 

678

Run-off in 

acre-feet

12,430 

5,070 

3,160

229,100

2,900 

3,480 

8,740 

29,490 

209,000 

149,900 

59,720 

15,720 

22,240

521,800

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of records for station at KcPhee and records 

of diversions.

Note.- Stage-discharge relation affected bv ice NOT. 29 to Feb. 21.
104 TRIBUTARIES ABOVE GREEN RIVER

Dolores River near McPhee, Colo.

Location.- Water-stage recorder, lat. 37°34', long. 108°34', In NEi sec. 12, T. 38 N., R. 

16 w., 0.8 mile downstream from Beaver Creek and 4t miles northwest of McPhee. Datum 

of gage Is 6,666.45 feet above mean sea level, unadjusted.

Drainage area.- 793 square miles (revised). 

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 8,430 second-feet May 14 (gage height, 7.48 

reetj, from rating curve extended above 5,900 second-feet; minimum dally, 5.7 secondfeet Sept. 12.

1938-41: Maximum discharge, that of May 14, 1941; minimum dally, 2.1 second-feet 

July 20, 22, 1939, Aug. 5, 1940.

Remarks.- Records excellent except those for period Oct. 1 to Apr. 30, which are fair. 

Diversions above station for Irrigation. In 1941, 104,000 acre-feet was diverted 

from river between Dolores and McPhee for Irrigation In San Juan River Basla.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

366 

250 

180 

137 

270

646 

388 

237 

14V 

126

90 

72 

55 

45 

48

64 

55 

50 

45 

39

35 

32

28 

23 

21

22 

75 

96 

61 

26 

32

HOT.

17 

13 

14 

16 

17

10 

13 

10 

11 

11

13 

40 

94 

68 

116

142 

75 

27 

25 

19

14 

18 

70 

70 

61

16 

18 

35 

59 

47

Dec.

33 

16 

16 

13 

15

12 

15 

12 

*14 

15

25

18 

66 

61 

58

57 

55 

55 

55 

55

55 

55 

55 

55 

55

55 

55 

55 

55 

55 

55

Jan.

50 

50 

50 

50 

50

*50 

50 

50 

50 

50

49 

49 

49 

49 

48

48 

*47 

47 

47 

48

48 

49 

50 

51 

52

61 

62 

62 

63 

64 

65

Feb.

57 

56 

59 

67 

67

67 

67 

70 

70 

73

73 

76 

60 

52 

54

56 

56 

58 

60 

61

66 

*70 

66 

79 

98

77 

68 

70

Month

Oct 

Hon 

Dec

C

Jan 

Pet 

Hai 

Apr 

Maj 

Jun 

Jul 

Aug 

Sep

n

alendar year 1940.... ..................

TUt..... ..................... ..........

ater year 1940-4

Mar.

83 

109 

98 

79 

94

77 

79 

79 

77 

77

75 

79 

96 

112 

132

109 

121 

174 

243 

331

366 

402 

482 

497 

366

369 

373 

497 

630 

769 

1,050

Apr.

1,290 

926 

786 

666 

664

795 

795 

1,110 

1,500 

1,580

1,110 

882 

703 

638 

695

686 

646 

551 

453 

373

490 

528 

662 

673 

1,300

2,320 

2,920 

2,840 

3,320 

3,530

Secondfoot-days

3,763 

1,159 

1,273

84,452.2

1,608 

1,855 

8,117 

35,852 

131,600 

69,670 

16,349 

541.3 

8,110.6

279,897.9

May

3,220 

2,810 

3,540 

5,200 

4,420

4,450 

4,740 

5,010 

5,470 

5,730

5,790 

6,120 

7,220 

7,180 

5,980

4,650 

4,760 

4,920 

4,670 

3,140

2,620 

2,410 

2,630 

3,320 

3,370

3,260 

3,430 

3,110 

2,920 

2,800 

2,490

Maximum

646 

142 

66

1,660

65 

98 

1,050 

3,530 

7,220 

3,050 

1,380 

74 

1,610

7,220

June

2,320 

2,330 

2,290 

2,150 

2,110

2,140 

2,580 

3,000 

2,590 

2,350

2,090 

1,820 

1,730 

1,790 

1,970

2,120 

2,290 

2,650 

5,050 

2,990

2,900 

2,870 

2,790 

2,690 

2,480

2,410 

2,070 

1,970 

1,640 

1,490

July

1,360 

1,340 

1,230 

1,190 

1,120

944 

925 

889 

89$ 

740

800 

708 

592 

544 

462

417 

375 

322 

296 

266

216 

156 

128 

125 

131

48 

31 

32 

14 

15 

15

Minimum

21 

10 

12

2.1

47 

52 

75 

373 

2,410 

1,490 

14 

6.8 

5.7

5.7

Aug.

15 

14 

15 

15 

14

24 

20 

18 

29 

74

26 

16 

13 

15 

28

17 

33 

34 

14 

12

11 

9.6 

9.1 

9.1 

8.2

7.7 

7.7 

6.8 

6.8 

8.2 

9.1

Mean

121 

38.6 

41.1

231

51.9 

66.2 

262 

1,195 

4,245 

2,322 

527 

17.5 

270

767

Sept.

6.8 

7.7 

7.2 

6.3 

6.3

6.3 

6.8 

6.5 

6.3 

6.3

6.0 

5.7 

9.6 

170 

111

44 

16 

31 

355 

188

128 

1,410 

1,810 

916 

740

499 

360 

296 

355 

592

Run-off In 

acre-feet

7,460 

2,300 

2,520

167,500

3,190 

3,680 

16,100 

71,110 

261,000 

138,200 

32,430 

1,070 

16,090

555,200

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Dec. 15 to Feb. 21.
TRIBUTARIES ABOVE GREEN RIVER 105

Dolores River at Gateway, Colo.

Location.- Water-stage recorder, lat. 38°41', long. 108°58', In SWi sec. 15, T. 51 H., 

R. 19 W., 0.3 mile northwest (revised) 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 1941.

Extremes.- Maximum discharge during year, 15,400 second-feet May 14 (gage height, 12.85 

feet); minimum daily, 132 second-feet Jan. 4, 5.

1937-41: Maximum discharge, that of May 14, 1941; nininum daily, 45 second-feet 

Aug. 16, 1940.

Remarks.- Records fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

*

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

3,130 

965 

675 

555 

635

2,180 

915 

770 

625 

585

484 

407 

351 

335 

315

298 

284 

268 

253 

250

244 

241 

232 

226 

220

218 

415 

383 

308 

268 

268

HOT.

268 

244 

220 

220 

212

205 

200 

195 

188 

1S2

168 

161 

146 

138 

148

176 

159 

182 

232 

280

262 

244 

229 

212 

200

192 

200 

208 

208 

200

Dec.

195 

192 

192 

205 

200

200 

198 

198 

195 

195

195 

215 

205 

198 

195

192 

190 

1S5 

205 

215

200 

212 

£10 

220 

271

244 

205 

235 

274 

277 

287

Jan.

294 

268 

215 

132 

132

220 

235 

210 

178 

161

195 

238 

290 

256 

241

241 

229 

205 

163 

185

244 

253 

250 

241 

190

244 

212 

210 

226 

241 

253

Feb.

271 

259 

235 

220 

220

220 

250 

267 

290 

277

262 

301 

525 

466 

379

355 

363 

367 

431 

466

462 

550 

476 

258 

466

489 

399 

S67

... Month

Oct 

NOM 

Dec

C

Jar 

Fel 

Mar 

Apr 

Maj 

Jur 

JuJ 

Aug 

Sej

H

alendar year 1940..... .................

ater year 1940-4

Mar.

335 

40S 

453 

494 

. 440

403 

363 

351 

315 

301

287 

287 

301 

395 

575

565 

525 

489 

540 

745

925 

1,030 

1,150 

1,350 

1,380

1,070 

865 

820 

930 

1,160 

1,470

Apr.

2,080 

3,070 

2,170 

1,860 

1,420

1,750 

1,620 

1,440 

1,770 

2,960

3,850 

3,020 

2,560 

2,010 

1,620

1,630 

1,810 

1,650 

1,460 

1,210

1,080 

1,150 

1,420 

1,660 

2,350

3,560 

6,640 

9,410 

9,690 

9,930

Secondfoot-daya

17,303 

6,081 

6,600

248,442

6,852 

10,111 

20,717 

87,870 

309,940 

125,100 

49,565 

15,687 

16,231

672,057

May

10,800 

9,510 

9,150 

11,100 

13,800

12,600 

12,200 

12,200 

18,500 

12,300

13,300 

13,800 

14,500 

14,600 

13,300

11,900 

10,900 

10,300 

10,000 

9,370

8,020 

7,060 

6,430 

6,220 

6,600

6,810 

6,600 

6,510 

6,140 

5,5SO 

5,140

Maximum

3,130 

280 

287

4,020

294 

560 

1,470 

9,930 

14,600 

6,090 

3,470 

785 

2,520

14,600

June

4,740 

4,390 

4,200 

4,140 

3,980

3,760 

3,780 

4,280 

4,720 

4,720

4,440 

3,850 

3,300 

2,890 

2,630

2,560 

2,680 

2,870 

3,240 

3,860

4,280 

4,450 

4,660 

5,290 

6,060

6,090 

5,710 

5,050 

4,520 

3,960

July

3,470 

3,050 

2,780 

2,540 

2,340

2,160 

1,980 

1,S60 

1,780 

1,710

1,650 

1,620 

1,650 

1,690 

1,680

1,630 

1,540 

1,450 

1,390 

1,340

1,270 

1,210 

1,110 

1,050 

1,060

935 

830 

755 

715 

680 

640

Minimum

218 

138 

185

45

132 

220 

287 

1,080 

5,140 

2,560 

640 

262 

150

1S2

Aug.

590 

545 

502 

462 

4S5

419 

427 

466 

625 

635

785 

785 

700 

615 

540

502 

580 

745 

760 

675

565 

4S4 

435 

391 

345

301 

290 

284 

271 

268 

262

Mean

558 

203 

213

679

221 

361 

668 

2,929 

9,998 

4,170 

1,599 

506 

541

1,841

Sept.

256 

2S2 

232 

190 

186

182 

170 

152 

150 

182

188 

182 

190 

205 

405

298 

268 

229 

435 

440

315 

411 

1,780 

2,520 

1,660

1,240 

1,060 

9S5 

825 

735

Run- off In 

acre-feet

34,320 

12,060 

13,090

492,700

13,590 

20,050 

41,090 

174,300 

614,800 

248,100 

98,310 

31,110 

32,190

1,333,000
106 TRIBUTARIES ABOVE OREEN RIVER

West Fork of Dolores River near Stoner, Colo.

Location.- water-stage recorder, lat. 37°39', long. 108°19', In NEJ sec. 18, T. 39 N., 

 K. 13 W., three-quarters of a mile downstream from Cottonwood Creek, 4 miles north 

of Stoner, and 4f miles upstream from mouth.

Drainage area.- 160 square miles.

Records available.- March to September 1941.

Extremes.- Maximum discharge during period, 2,790 second-feet May 13 (gage height, 4.25 

feet), from rating curve extended above 1,220 second-feet; minimum dally, 38 secondfeet, Mar. 18.

Remarks.- Records fair. Diversions above station for Irrigation.

Cooperation.- Gage-height record and results of discharge measurements Mar. 18 to Aug. 31 

furnisnea by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

15 

14 

16

16 

17 

19 

19 

20

21 

22 

25 

24 

26

86 

27 

28 

29 

30 

31

Oct. HOT. Dec. Jan. Feb.

Month

Dot 

No* 

Dec

C

 Tan 

Pet 

Mar *i

 Tun 

Jul 

Aug 

Sep

T

alendar year

he perlod.. ............................

Mar.

3S 

47 

46

46 

44 

46 

47 

46

42 

40 

48 

56 

61 

7S

Apr.

Ill 

39 

7S 

71 

78

73 

69 

82 

107 

136

116 

107 

93 

SO 

7S

78 

76 

76 

71 

61

64 

67 

66

64 

89

125 

162

192 

240 

579

Secondfoot -days

686 

3,375 

33 ,002 

IS ,768 

S,226 

3,063 

2,956

-

May

597 

670 

633 

1,010 

820

SS2 

820 

1,100 

1,400 

1,600

1,710 

1,910 

2,430 

1,660 

1,400

1,190 

1,210 

1,290 

1,160 

844

766 

731 

780 

887 

887

862 

914 

844 

759 

704 

662

Maximum

78 

579 

2,430 

752 

426 

146 

215

-

June

638 

638 

650 

620 

632

620 

710 

731 

662 

620

680 

646 

660 

620 

590

626 

63S 

698 

762 

724

717 

692 

680 

668 

666

602 

560 

636 

466 

438

July

426 

432 

390 

3S6 

361

349 

349 

343 

343 

310

334 

322 

289 

268 

248

253

238 

23S 

240 

225

206 

196 

202 

19S 

ISO

172 

172 

162 

142 

136 

128

Minimum

33 

61 

570 

43S 

12S 

54 

54

-

Aug.

120 

122 

110 

92 

96

116 

140 

116 

142 

146

124 

120 

110 

102 

110

110 

134 

108 

94 

90

S2 

76 

72 

68 

68

66 

66 

64 

67 

92 

80

Mean

48.9 

112 

1,065 

626 

265 

98. S 

9S.6

-

Sept.

66

64 

66 

86 

82

82 

80 

84 

86 

80

72 

72 

100 

132 

82

68

64 

93 

132 

U6

76

as2

216 

142 

130

108 

98 

86 

10S 

146

Run-off In 

acre-feet

1,360 

6,690 

66,460 

37,230 

16 ,320 

6,080 

5,860

139,000
TRIBUTARIES ABOVE OREEN RIVER 2.07 

Disappointment Creek at upper station, near Cedar, Colo.

Location.- Staff gage, lat. 37°51', long. 108°25', in sec. S3, T. 42 N., R. 14 W., 2

 miles downstream from Morrlson Creek and 14& ralles southeast of Cedar.

Drainage area.- 69 square miles.

Records available.- October 1940 to September 1941 (no winter records).

Extremes.-Maximum discharge observed during year, 404 second-feet Way 6 (gage height,

 3.40 feet), from rating table extended above 200 second-feet; minimum daily, 2 secondfeet Sept. 14, may have been less during period of Ice effect.

Remarks.- Records poor. Oage read twice daily. A few diversions above station for irrigation.

Cooperation.- Oage-height record and results of discharge measurements Oct. 1 to Aug. 31 

rurnisneo by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

15 

14 

15

16 

17is

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

51

Oct.

127 

120 

110 

80 

62

42 

38 

42 

115 

14S

72 

36 

34 

37 

4O

77 

118 

85 

34 

23

25 

26 

27 

29 

30

34 

62 

68 

2S 

29 

33

HOT.

35 

55 

35 

35

34

32 

34 

36 

56 

33

31 

30 

27 

24 

22

20 

19 

15 

12 

10

9 

9 

9 

9

S

8 

8 

S 

S 

7

Dec.

7 

7 

7 

8 

S

8 

8 

9 

8 

9

9

10 

9 

10 

9

9

9 

10 

10 

11

11 

12 

12 

12 

11

12 

12 

12 

12 

13 

12

Jan. Feb.

Month

Oct 

Hoi 

Dec

C

Jar 

Fet 

Mai 

Api 

Ka, 

Jur 

Ju3 

Aug 

Ssi

1

alendar year

11 16-31

Tatar year

Mar. Apr.

41 

43 

41 

42 

41

36

34 

34 

35 

37

38 

40 

42 

43 

45

Secondfoot -days

1,829 

654 

306

_

592 

5,993 

2,859 

1,596 

236 

495

-

Hay

45 

45

78 

136 

279

372 

229 

186 

229 

183

214 

244 

244 

252 

241

238 

244 

226 

206 

200

200 

194 

136 

175 

178

184 

169 

165 

152 

147 

144

MaxlinuBJ

148 

36

13

_

~45 

372 

142 

90 

48 

181

-

June

142 

129 

106 

88 

92

88 

102 

100 

86 

90

92 

94 

96 

106 

120

106 

96 

S8 

88 

92

92 

88 

90 

92 

90

90 

88

82 

75 

71

July

88 

88 

 86 

90 

88

88 

82

8JL 

82 

75

68 

67 

63 

61 

54

49 

48 

46 

42 

37

51 

28 

25 

25

20

18 

16 

15 

15 

18 

12

Minimum

23

7 

7

"

54 

45 

71 

12 

S 

2

-

Aug.

11 

11 

11 

10 

10

9 

9 

8 

6 

5

5 

4 

4 

S 

«

8

8 

8 

48

15

4 

9 

S 

3

3

3 

3 

4 

3 

3 

9

Mean

59.0

21.1 

9.9

_

59.5 

193 

95.9 

51.5 

7.6 

16.5

-

s«pt.

3

S 

6 

3 

3

3

9 

3

8 

4

5

4 

3

a 

s

3 

5 

S 

3

3

S 

181 

160 

68 

10

6 

6 

6 

6 

*

Ri*o-6f f in 

acre-feet

3,630 i,a»

60T

_

1,170 

UL,8» 

6,67O 

5.1TO 

468 

988

-

461676 O-42-8
108 TRIBUTARIES ABOVE GREEN RIVER

Disappointment Creek near Cedar, Colo.

Location.- Staff gage, lat. 37°56', long. 108°38', In sec. 16, T. 42 N., R. 16 W., at 

highway bridge, 2& miles southeast of Cedar and 3 miles upstream from Dawson Draw.

Drainage area.- 180 square miles.

Records available.- November 1940 to September 1941.

Extremes.- Maximum discharge during period, 1,270 second-feet Sept. 26 (gage height, 7.26 

feet;, by computation of flow over dam; minimum dally, 0.2 second-foot Jan. 15, 16.

Remarks.- Records poor. Gage read twice dally. Diversions above station for Irrigation.

Cooperation.- Gage-height record and results of discharge measurements Nor. 1 to Aug. 31 

furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

5.1

HOT.

5.1 

4.8 

4.5 

4.2 

4.2

4.2 

3.9 

3.6 

3.6 

3.6

5.4 

4.S 

4.2 

3.9 

3.6

3.3 

3.3 

3.0 

3.0 

2.6

2.6 

2.4 

4.5 

4.8 

5.1

4.8 

3.9 

3.3 

2.2 

2.0

Dec.

10 

7.6 

8.4 

6.8 

5.7

5.1 

4.5 

4,5 

4.2 

3.9

3.3 

2.8 

2.6 

2,4 

2.4

2.4 

2.4 

2.2 

2.2 

2.4

2.4 

3.0 

4.5 

5.1 

5.7

5.7

e.e

6.8 

5,4 

5.4 

4.8

Jan.

2.8 

2.8 

2.3 

2.6 

2.4

2.4 

2.4 

1.8 

.9 

.9

.8 

.6 

.6 

.6 

.2

.2 

.4 

.6 

.6 

.6

.6 

.8 

.9 

1.0 

1.2

1.6 

1.6 

1.8 

2.0 

2.4 

2.8

Feb.

14 

14 

15 

16 

16

18 

16 

15 

14 

14

12 

11 

7.6 

6.0 

5.4

4.8 

4.2 

4.2 

4.2 

5.4

5.4 

11 

28 

41 

52

53 

53 

69

Month

Oct 

Hov 

Dec

C

Jar 

Pel 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

1

alendar year

11.....................................

 he perlo

Mar.

11 

11 

8.4 

9.2 

6.0

6.0 

6.8 

6.8 

10 

11

13 

13 

15 

16 

19

23 

25 

24 

20 

17

15 

14 

13 

12 

13

17 

36 

75 

110 

112 

142

Apr.

68 

66 

59 

49 

56

56 

57 

54 

53 

59

57 

59 

56 

53 

60

57 

56 

44 

50 

50

46 

59 

62 

52 

80

368 

359 

278 

195 

218

Secondfoot -days

114.4 

141.4

-

43.7 

529.2 

830.2 

2,836 

7,651 

4,100 

1,652.5 

852.0 

2,312.7

-

May

195 

242 

218 

305 

307

383 

340 

340 

346 

347

339 

336 

343 

358 

353

302 

357 

333 

337 

328

148 

124 

114 

110 

114

110 

108 

108 

104 

94 

108

Maximum

~5.4 

10

-

2.8 

69 

142 

368 

383 

165 

100 

302 

700

-

June

152 

148 

148 

152 

155

160 

162 

165 

160 

160

152 

142 

142 

138 

132

132 

128 

124 

120 

120

120 

118 

152 

152 

118

116 

114 

114 

104 

100

July

100 

100 

100 

98 

96

94 

94 

88 

84 

80

75 

74 

72 

68 

64

60 

56 

53 

53 

49

30 

27 

20 

5.1 

4.8

3.0 

2.2 

1.2 

.6 

.3 

.3

Minimum

2.0 

2.2

-

.2 

4.2 

6.0 

44 

94 

100 

.3 

4.8 

1.2

-

Aug.

25 

24 

19 

18 

17

17 

17 

16 

14 

19

18 

17 

14 

14 

14

13 

13 

108 

52 

302

6.8 

5.7 

5.7 

5.7 

5.1

5.7 

4.8 

4.8 

5.7 

20 

31

Mean

3.81 

4.56

-

1.41 

18.9 

26. S 

94.5 

247 

137 

53.3 

27.5 

77.1

-

Sept.

8.4 

5.1 

5.1 

5.1 

3.3

1.2 

1.6 

1.2 

1.2 

1.2

1.2 

1.2 

1.2 

5.7 

4.5

4.5 

4.2 

16.0 

16 

10

4.8 

630 

29 

16 

15

8700 

BlOO 

650 

a!20 

a550

Run-Off In 

acre-feet

227 

280

-

87 

1,050 

1,650 

5,630 

15,180 

8,130 

3,280 

1,690 

4,590

41,790

a Ho gage-height record; discharge computed on basis of one determination of flow over dam and 

records for station at upper station, near Cedar, Colo.
TRIBUTARIES ABOVE OREEN RIVER 109

San Mlguel River at Naturita, Colo.

Location.- Staff gage, lat. 38°13', long. 108°34', in SEiSWi sec. 19 T.46 M..R.15 vi., at

highway bridge in Naturita, 1.2 miles downstream from Naturita Creek. Datum of gage

Is 5,392.85 feet above mean sea level, datum of 1929. Staff gage October 1917 to

April 1927 and water-stage recorder April 1927 to September 1929 at sane site

(different datums). 

Drainage area.- 1,080 square miles. 

Records available.- October 1917 to September 1927 and October 1940 to September 1941 In

reports of U.S. Geological Survey. April 1918 to September 1929, October 1940 to

September 1941 in reports of State engineer. 

Average discharge.- 13 years, 418 second-feet. 

Extremes.- Maximum discharge observed during year, 6,520 second-feet May 4 (gage height,

8.40 feet), from rating curve extended above 3,700 second-feet; minimum daily, 79

second-feet Mar. 5-12.

1917-29, 1940-41: Maximum discharge observed, that of May 4, 1941; minimum daily,

38 second-feet Aug. 31, 1918. 

Remarks.- Records fair except those for period of Ice effect or no gage-height record,

which are poor. Gage read twice daily. Diversions above station for irrigation. 

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to Aug. 31

furnished by Bureau of Reclamation.

Rating tables, water year 1940-41,'except period of ice effect (gage height, in feet, 

and discharge, In second-feet)

Oct. 1 to May 3 Hay 4 to Sept. 30

1.0 

1.2 

1.4 

2.0 

2.4

79 3.0

106 3,6

140 4.2

290 4.8

430 5,6

705

1,050

1,500

2,070

2,940

1.1 

1.3 

1.6 

1.9 

2.3

114

148

216

300

447

3.1 

3.6 

4.5 

6.0

S30 

1,130 

1,900 

3,520 

6,650

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

211 

1S2 

182 

194 

596

390 

306 

232 

219 

211

182 

182 

171 

140 

140

136 

122 

122 

122 

122

122 

122 

122 

122 

122

122 

1S2 

232 

160 

131 

122

NOT.

182 

122 

122 

102 

92

95 

106 

106 

114 

140

131 

122 

106 

106 

106

106 

106 

119 

106 

106

106 

106 

106 

106 

106

106 

106 

106 

106 

106

Dec.

99 

99 

92 

92 

92

92 

92 

92 

92 

92

92 

92 

92 

84 

80

82 

84 

86 

SS 

88

86 

86 

88 

88 

88

86 

86 

86 

88 

88 

92

Jan.

> 93

Feb.

96 

9S 

96 

90 

86

90 

100 

106 

92 "66

95 

95 

99 

99 

109

109 

122 

122 

119 

99

114 

114 

114 

109 

106

103 

99 

99

Month

Ocl 

NOT 

Dec

C

Jai 

Pel 

Mai 

Api 

Maj 

Jui 

Ju] 

Auf 

Sej

?

alendar year

rater year 1940-<

Mar.

103 

119 

119 

103 

79

79 

79 

79 

79 

79

79 

79 

109 

114 

119

126 

126 

126 

131 

136

160 

171 

171 

290 

290

211 

227 

238 

290 

538 

538

Apr.

1,020 

1,150 

1,120 

895 

560

450 

355 

560 

730 

1,020

925 

730 

560 

605 

695

705 

755 

53S 

372 

430

53S 

680 

730 

1,150 

9S5

2,020 

2,120 

2,780 

2,780 

2,780

Secondfoot-days

5,721 

3,299 

2,764

_

2,SS3 

2,S66 

5,1S7 

30,738 

82,330 

50 ,903 

31,725 

12,785 

8,778

239,979

May

2,780 

2,780 

2,880 

6,420 

3,280

2,680 

2,730 

2,950 

3,000 

3,340

3,880 

3,520 

4,300 

3,980 

3,170

2,780 

2,680 

2,460 

1,860 

1,760

1,680 

1,680 

1,720 

1,810 

2,150

1,900 

1,810 

1,720 

1,720 

1,450 

1,410

Maximum

596 

140 

99

_

122 

538 

2,780 

6,480 

2,300 

1,450 

1,000 

970

6,430

June

1,410 

1,410 

1,450 

1,580 

1,580

1,630 

1,720 

1,900 

1,720 

1,630

1,500 

1,290 

1,130 

858 

805

1,330 

1,540 

1,900 

2,100 

2,300

2,250 

2,300 

2,300 

2,300 

2,250

2,100 

2,000 

1,630 

1,540 

1,450

July

1,450 

1,450 

1,370 

1,370 

1,370

1,250 

1,330 

1,210 

1,170 

1,060

1,000 

1,330 

1,290 

1,000 

830

630 

1,100 

940 

1,060 

1,330

885 

885 

940 

858 

830

705 

705 

655 

605 

490 

427

Minimum

122 

92

eo

_

86 

79 

355 

1,410 

805 

. 427 

169 

122

79

Aug.

468 

439 

388 

369 

369

399 

447 

359 

447 

655

5Z5 

535 

468 

447 

487

1,000 

680 

512 

388 

369

369 

369 

369 

351 

300

266 

242 

229 

216 

204 

169

Mean

185 

110 

89.2

_

93 

102 

167 

1,025 

2,656 

1,697 

1,023 

412 

293

667

Sept.

169 

169 

169 

139 

139

139 

139 

139 

139 

139

130 

122 

285 

490 

270

169 

165 

242 

256 

256

256 

970 

885 

468 

427

407 

388 

369 

316 

427

Run-off In 

acre-feet

11,350 

6,540 

5,480

_

5,720 

5,680 

10,290 

60 ,970 

163 ,300 

101,000 

62,930 

25 ,360 

17 ,410

476 ,000

Hote.- Stage-discharge relation affected by Ice Dec. 14 to Feb. 7.
110 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 

 S., at Warren Bridge, 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.

Bggprds available.- October 1931 to September 1941.

Extremes.- Maximum discharge during year, 2,490 second-feet June 25 (gage height, 4.43 

rset); minimum dally, 88 second-feet Mar. 14.

1931-41: Maximum discharge, 3,260 second-feet June 26, 1932 (gage height, 5.08 

feet); from rating curve extended above 2,500 second-feet; minimum not determined, 

occurred during winter.

RenarKs.- Records excellent except those for period of ice effect, which are fair. . 

Natural regulation by lakes In Green River Basin.

Cooperation.- Discharge measurements Oct. 1 to June 30 furnished by Bureau of Reclamation.

Rating table, water year 1940-41, except period of Ice effect 

(gage height, In feet, V* discharge, In second-feet)

1.4 118 2.7 650 

1.7 185 3.2 1,050 

2.0 2S5 3.8 1,720 

2.3 420 4.5 2,580

Discharge, In second-fe'et, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

IS 

18 

fet

IB

M 

If 

18 

19 

SO

ei

22

es

84

es

26 

27 

28 

29 

60 

81

Oct.

475 

442 

410 

405 

361

354 

309 

289 

278 

260

860 

243 

832 

222 

218

212 

806 

#» 

167 

181

188 

166 

182 

178 

175

178 

188 

SOS

eoo

IS* 

191

Nov.

191 

188 

188 

188 

*140

165 

185 

182 

170 

119

110 

110 

115 

ISO 

140

140 

136 

158 

ISO 

ISO

125 

120

115 

115 lie

115 

115 

180 

128 

122

Dec.

180 

180 

182 

184 

*125

185 

184 

128 

180 

116

110 

108 

105 

100 

100

104 

105 

107 

110 

116

116 

114 

115 

115 

112

110

no

110 

110 

110 

108

Jan.

100 

94 

94 

96 

98

98 

100 

105 

104 

*108

100 

96 

96 

100 

96

94 

98 

100 

100 

102

100 

98 

100 

100 

102

102 

100 

100 

100 

100 

100

Feb.

102 

102 

102 

100 

98

96 

96 

96

98 

100

*100 

104 

100 

98 

96

94 

96 

96 

94 

98

100 

100 

102 

104 

100

96 

94 

100

Month

oat 

Ho\

D«c

C

3ar 

Pel 

Itei

Api

^

Ju3

*"H 

Bei

11

alendsr your 1940... ...................

11. ................ ........ .

y.... ...................................

tater yea* 1940-4

Mar.

104 

106 

106 

98 

100

100 

98 

100 

102 

100

90 

94 

90 

88 

95

100 

102 

104 

106 

108

*111 

115 

118 

116 

110

112 

115 

120 

125 

130 

135

Apr.

140 

140 

146 

150 

150

154 

160 

155 

158 

160

165 

160 

160 

170 

*174

176 

174 

166 

160 

164

170 

180 

190 

191 

215

232 

254 

356

466 

502

Secondfoot -days

7,793 

4,179 

3,513

122,715

3,075 

2,762 

3,298 

5,928 

33,569 

49,996 

32,344 

16,170 

10,004

172,631

May

497 

542 

590 

596 

596

572 

486 

458 

480 

502

584 

792 

1,180 

1,420 

1,340

1,130 

1,010 

1,240 

1,230 

1,050

944 

1,050 

1,330 

1,670 

1,800

1,960 

2,240 

2,150 

1,710 

1,320 

1,160

Maximum

475 

191 

185

1,680

105 

104 

135 

502 

2,240 

2,460 

1,550 

800 

385

2,460

June

1,060 

996 

1,000 

1,050 

1,320

' 1,500 

1,370 

1,SSO 

1,400 

1,420

1,190 

1,060 

1,070 

1,250 

1,560

1,770 

1,920 

2,130 

2,260 

2,310

2,200 

2,150 

2,220 

2,350 

2,460

2,400 

2,180 

1,890

1,680 

1,460

July

1,170 

1,020 

1,020 

1,090 

1,150

1,230 

1,270 

1,360 

1,460 

1,560

1,550 

1,370 

1,090 

928 

864

856 

864 

832 

784 

800

928 

1,000 

944 

936 

944

1,030 

1,060 

1,000 

864 

728 

632

Minimum

172 

110 

100

62

94 

94 

88 

140 

468 

996 

632 

405 

288

88

Aug.

572 

542 

514 

486 

464

453 

458 

458 

453 

470

536 

699 

800 

713 

626

578 

572 

590 

684 

560

536 

519 

486 

470 

464

442 

438 

431 

431 

420 

405

Mean

251 

139

113

335

99.2 

98.6 

106 

198 

1,083 

1,667 

1,043 

522 

3S3

473

Sept.

385 

356 

334 

334 

334

330 

352 

38$ 

S66

366

348 

338 

325 

317 

306

SOS 

293 

282 

286 

289

306 

334 

338 

343 

334

325 

348 

366 

348 

334

Run-off In 

acre-feet

15,460 

8,290 

6,970

243.400

6,100 

5,480 

6,54O 

11,760 

66,680 

99,170 

64,150 

32,070 

19,840

342,400

* Winter discharge meaaixrsment made cm this day.

." Stage-dlscharge relation affected by Ice HOT. 11 to Apr. 23.
GREEN RIVER BASIN 111

Green River near Llnwood, Utah

Location.- Water-stage recorder, lat. 40°58', long. 109°35', In SWi sec. 89, T. 3 N., R. 

21 ii., a quarter of a mile upstream from Henrys Fork, 2 miles south of Wyoming-Utah 

State line, and 5 miles southeast of Llnwood. 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 1941.

Average discharge.- 13 years, 1,607 second-feet.

Extremes.- Maximum discharge during year, 10,000 second-feet May 30 (gage height, 7.62 

reetj; minimum dally, 340 second-feet Jan. 2, Feb. 7, 8.

1928-41: Maximum discharge, 15,200 second-feet June 4, 1936 (gage height, 10.11 

feet, from recorded range of stage and floodmarks), from rating curve extended above 

11,000 second-feet; minimum, 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, 

wmch are fair. Diversions above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1041

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

1,100 

880 

712 

664 

688

704 

720 

696 

688 

680

656 

624 

600 

586 

579

579 

579 

572 

56S 

551

544 

544 

537 

530 

506

494 

500 

S24 

530 

544 

565

Mov.

586 

586 

593 

600 

593

600 

608 

5S6 

579 

579

593 

»586 

432 

405 

4S2

494 

459 

437 

415 

425

440

430 

415 

400 

400

430 

450 

470 

500 

520

Dec.

510 

530 

550 

560 

540

560 

580 

610 

600 

570

510 

450 

420 

390 

390

400 

405 

420 

430 

430

420 

410 

425 

430 

430

415 

405 

415 

410 

400 

380

Jan.

350 

340 

350 

350 

370

375 

380 

385 

3S5 

385

390 

400 

400 

390 

380

390 

390 

400 

400 

375

380 

380 

«S66 

355 

370

370 

350 

365 

370 

360 

350

Feb.

360 

360 

365 

365 

360

350 

340 

340 

350 

360

380 

400 

3S5 

375 

360

380 

«S57 

370 

390 

390

380 

400 

420 

420 

420

430 

460 

510

Month

Oct 

Not 

Dec

C

Jar 

Fel 

Hai 

Api 

Maj 

Jur 

J*3 

Au£ 

Sei

1

alendar year 194to ......................

rater year 1940-'

Mar.

560 

570 

560 

550 

560

579 

5S6 

586 

558 

608

537 

551 

551 

60S 

»5S6

579 

579 

638 

984 

1,930

2,280 

2,130 

2,240 

2,220 

2,030

1,480 

1,510 

1,490 

1,510 

1,670 

1,880

Apr.

2,690 

3,220 

.3,940 

4,050 

4,100

3,390 

3,360 

3,040 

2,490 

2,130

1,960 

1,S90 

1,340 

1,750 

1,690

1,880 

1,940 

1,810 

1,740 

1,580

1,400 

1,290 

1,240 

1,170 

1,130

1,210 

1,300 

1,360 

1,340 

1,400

Secondfoot-days

19,241 

15,043 

14,395

274,710

11,601 

10,777 

33,694 

63,330 

116,910 

194,710 

75,580 

48,930 

28,414

632,625

toy

1,410 

1,480 

1,510 

1,520 

1,520

1,520 

1,570 

1,680 

1,660 

1,640

1,430 

1,400 

1,400 

1,560 

2,310

3,440 

4,270 

4,560 

4,360 

4,320

5,620 

5,040 

4,390 

4,180 

4,660

5,890 

7,080 

7,970 

9,140 

9,820 

S,660

Maximum

1,100 

608 

610

4,29O

400 

510 

2,280 

4,100 

9,820 

9,800 

4,480 

2,36O 

1,310

0,880

June

7,000 

a5,900 

a5,050 

a4,800 

a4,750

aS.lOO 

a6,050 

a6,25O 

a6,300 

a7,800

9,800 

9,010 

7,560 

6,480 

6,020

5,910 

6,480 

6,900 

7,290 

7,290

7,530 

7,480 

7,020 

6,740 

6,480

6,200 

6,000 

5,620 

5,240 

4,720

July

4,480 

4,230 

4,020 

3,730 

3,420

3,140 

2,850 

2,610 

2,480 

2,390

2,280 

2,280 

2,200 

2,310 

2,360

2,220 2;5oo

2,000 

1,900 

1,820

1,770 

1,740 

1,840 

1,830 

1,770

1,940 

1,930 

1,920 

2,070 

2, ISO 

1,890

Hlnlnum

404 

400 

380

270

340 

340 

537 

1,130 

1,400 

4,720 

1,740 

1,040 

736

»f)

Aug.

1,720 

1,540 

1,390 

1,290 

1,190

1,120 

1,070 

1,040 

1,080 

1,320

1,880 

2,820 

2,360 

2,010 

1,820

1,760 

1,600 

2,140 

2,270 

1,680

1,520 

1,440 

1,380 

1,540 

1,340

1,480

1,960 

1,780 

1,410 

1,390 

1,390

Mean

621 

501 

464

751

374 

385 

1,087 

2,111 

3,771 

6,490 

2,438 

1,578 

947

1,733

Sept.

1,310 

1,100 

1,110 

al,080 

al,050

al,020 

ad90 

a960 

aOSO 

888

864 

856 

864 

848 

824

784 

768 

744 

7S6 

768

884 

864 

1,090 

1,120 

1,060

1,080 

1,000 

968 

980 

904

8un«-off In 

acre-feet

38,160 

20,840 

88,886

644,000

23,016 

81,380 

66,850 

125,808 

231,000 

586,800 

149,000 

97,050 

56,380

1,266,000

* Winter discharge measurement made on this day*

a No gage-height record; discharge computed on basis of records for Green River at Warren Bridge 

and neap Daniel, and New Pork near Boulder.

Kote.- Stage-discharge relation affected by ice Nov. 19 to Hap. 5.
112 GREEN RIVER BASIN

Green River at Green River, Utah

Location.- Water-stage recorder, lat. 39°00', long. 110°09', in NWiSWt sec. 15, T. 21 S.,

 K. 16 £!., 1 mile southeast of town of Green River and 22 miles upstream from San Rafael 

River.

Drainage area.- 40,600 square miles.

Records available.- October 1894 to October 1899, February 1905 to December 1911, June

 1924 to September 1941. December 1910 to June 1924, at site 7 miles downstream, published as Green River at Little Valley, near Green River, Utah.

Average discharge.- 41 years (1894-99, 1905-41), 7,OOS second-feet.

Extremes.- Maximum discharge during year, 28,100 second-feet May 27 (gage height, 11.45 

feet); minimum, 472 second-feet Dec. 21 (gage height, 5.5S feet).

1094-99, 1905-41: Maximum discharge, S8.100 second-feet June 27, 1917 (gage height, 

14.53 feet, site and datum then in use); minimum, 255 second-feet Nov. 2S, 1931 (gage 

height, 4.17 feet); minimum gage height, 4.08 feet Aug. 1, Dec. 5, 1934.

Remarks.- Records excellent except those for August and September, which are good, 

sions above station for irrigation.

DiverDischarge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

Z 

4 

&

6 

7 

8 

9 

10

11 

13 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2B 

29 

30 

31

Oct.

2,230 

4,210 

3,960 

3,030 

3,400

3,760 

3,560 

3,430 

2,970 

2,850

2,630 

2,500 

2,410 

2,340 

2,240

2,140 

2,110 

2,060 

2,000 

1,930

1,860 

1,810 

1,810 

1,770 

1,730

1,730 

2,110 

1,950 

1,840 

2,040 

1,930

Nov.

1,S10 

1,770 

1,310 

1,860 

1,360

1,950 

2,040 

2,090 

2,060 

2,060

2,060 

2,060 

2,090 

2,040 

1,950

1,810 

1,730 

1,730 

1,810 

1,700

1,860 

2,020 

2,110 

2,060 

1,930

1,950 

1,380 

1,680 

1,840 

1,680

Dec.

1,560 

1,620 

1,840 

2,020 

2,140

2,140 

3,160 

2,130 

2,210 

2,210

2,140 

2,000 

2,040 

1,540 

1,180

664 

734 

776 

790 

546

508 

720 

1,130 

1,360 

1.6BO

1,790 

1,840 

1.840 

1,620 

1,640 

1,680

Jan.

1,790 

1,970

1,360 

2,160 

1,860

1,700 

1,380 

1,360 

1,310 

1,250

1,360 

1,520 

1,520 

1,530 

1,580

1,630 

1,580 

1,640 

1,790 

1,310

1.730 

1,420 

1,460 

1,420 

1,640

1,580 

1.770 

1,860 

1,640 

1,640 

1,660

Feb.

1,500 

1,540 

1,520 

1,770 

1,660

1,660 

1,640 

1,600 

1,460 

1,420

1,430 

1,530 

1,600 

1,620 

1,640

1,700 

1,340 

2,000 

2,230 

2,470

2,580 

2,830 

3,000 

3,430 

4,360

4,320 

4,580 

4,470

Month

Oct 

Nov 

Dec

C

Jan

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

V!

alendar year 194

'

ater year 1940-4j

Mar.

4,510 

4,530 

4,400 

4,470 

4,430

3,760 

3,660 

3,650 

3,400 

3,090

2,850 

2,600 

2,520 

2,410 

2,240

2,140 

2,040 

2,000 

2,110 

2,310

2,440 

2,500 

2,740 

3,660 

5,480

5,440 

5,320 

5,240 

4,960 

4,140 

3,830

Apr.

3,790 

3,790 

4,210 

4,730 

5,560

6,600 

6,960 

7,130 

6,640 

6,330

6,160 

5,860 

5,480 

5,400 

5,360

5,280 

5,160 

5,730 

5,650 

5,430

5,430 

5,120 

4,770 

4,360 

4,000

3,830 

3,930 

4,400 

5,160 

5,650

Secondfoot-days

76,390 

57,080 

4S, 238

1,221,323

50,520 

63, 560 

108, 930 

158,050 

590,910 

577,900 

180, 720 

134.860 

91,710

2, 13S, 358

May

6,550 

7,740 

8,450 

9,470 

10, 100

11,200 

14,000 

IB, 600 

17,300 

14,300

13,700 

14, 700 

17,700 

20,200 

20,000

25, 100 

25,700 

25,400 

23,900 

23,300

22,900 

22, 100 

20,600 

20,700 

23,000

23, 600 

25,500 

25,400 

26,700 

26, SOO 

26,200

Maximum

4,210 

2,110 

2,210

15,700

2,160 

4,580 

5,480 

7,180 

26,300 

25,000 

11,300 

7,320 

4,690

86, 800

June

25,000 

23,400 

21,600 

20,000 

18,900

18,200 

19,300 

21,100 

21, 300 

21,100

20,400 

20, 400 

20, 500 

21,500 

20,500

19,000 

18,500 

18, 700 

19,200 

20,300

20,000 

20,200 

19,900 

19,000 

18,000

16,900 

15,600 

14,100 

13,200 

12,100

July

11,300 

10,700 

9,970 

9,030 

8,450

7,970 

7,690 

7,180 

6,600 

6,160

5,650 

5,400 

5,230 

5,040 

5,200

5,400 

5,080 

4,850 

4,350 

5,520

4,660 

4,530 

4,470 

3,960 

3,630

3,660 

3,930 

3,790 

3,660 

3,530 

3,530

Minimum

1,730 

1,640 

508

508

1,250 

1,420 

2,000 

3,790 

6,550 

12,100 

3,530 

2,520 

2,110

508

Aug,

3,400 

3,210 

3,240 

3,240 

3,360

2,880 

2,740 

2,520 

2,630 

3,400

4,850 

5,900 

4,100 

3,560 

3,630

6,110 

5,770 

7,320 

6,460 

5,400

7,140 

6,460 

5,650 

4,770 

4,280

3,860 

3,630 

3,430 

3,470 

3,760 

4,690

Mean

2,464 

1,903 

1,556

3,338

1,630 

2,270 

3,514 

5,268 

19,060 

19,260 

5,830 

4,350 

3,057

5,860

Sept,

4,690 

4,180 

3,630 

3,310 

3,090

2,970 

2,740 

2,550 

2,440 

2,310

2,180 

2,110 

2,500 

2,830 

2,580

2,550 

2,300 

2,970 

2,880 

2,690

2,550 

2,530 

2,530 

3,730 

5,440

4,320 

3,360 

3,120 

3,120 

2,910

Run-off In 

acre-feet

151,500 

113,200 

95,680

2,423,000

100,200 

126,000 

216,100 

313,500 

1,172,000 

1,146,000 

358,500 

267,500 

181,900

4,242,000
GREEN RIVER BASIN 113

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 1941.

Extremes.- Maximum discharge during year, 289 second-feet May 3 (gage height, 5.45 feet), 

from rating curve extended above 160 second-feet; minimum dally not determined, 

occurred during period of Ice effect.

1938-41: Maximum discharge, that of May 3, 1941; no flow July 8-15, 21-24, Aug. 

2-25, Sept. 5-11, 1940.

Remarks.- Records fair. Diversions above station for Irrigation.

Cooperation.- Gage-height record and discharge measuremehts Oct. 1 to June 30 furnished 

by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4

e

6 

7 

6 

9 

10

11 

12 

13 

14ie

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

0.5 

.5 

.6 

.5 

.3

.1 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

.3 

.3 

.3 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.4

.5 

.5 

1.4 

1.4

Nov.

1.7 

1.6 

1.2 

.6 

*.4

1.0 

1.5 

3.4 

3.0 

2.6

2.5 

2.4 

4.5 

5.8 

6.7

7.2 

7.2 

7.2 

7.0 

6.4

6.0 

5.6 

5.2 

5.2 

5.6

6.2 

6.8 

7.0 

7.2 

7.0

Dec.

(«)

 7.0

Jan.

(«)

> 6.5

Feb.

(«)

> 4.0

Month

Oot 

Hon 

Dec

C

Jar 

Fet 

Max

Apr 

«a5 

Jiir 

Ju3

Aug

Set

HI ater year 1940-4 1

Mar.

(«} 

' 5.0

Apr.

20

Secondfoot-days

10.1 

135.7 

217.0

4,542.9

201.5 

112.0 

155.0 

600 

1,686.9 

1,129.5 

106.0 

90.3 

173.7

4,617.7

May

160 

«163 

192 

163 

143

86 

54

65 

78 

76

67 

61 

45 

31 

23

17 

11 

7.4 

10 

14

11 

8.2 

6.6 

6.2 

7.4

18 

42

57 

35 

25 

4.1

Maximum

1.4 

7.2

109

192 

202

13 

8.2 

14

202

June

24 

14 

6.6 

.3 

39

56 

75 

178 

202 

122

52 

33 

25 

48 

67

52 

42 

24 

16 

12

6.6 

5.4 

5.4 

8.2 

5.4

2.9

1.7 

1.7 

2.0 

2.3

July

4.4

3.8 

4.1 

4.7 

3.8

1.6 

1.4 

1.4 

1.7 

2.0

1.8 

1.8 

2.0 

2.3 

3.2

3.2

2.3 

1.7 

1.8 

2.0

1.8 

1.7 

1.7 

1.7 

2.9

13 

13 

9.0 

5.0 

2.6 

2.6

Minimum

0.1 

.4

0

4.1 

.3 

1.4 

.3 

1.2

-

Aug.

2.0 

3.2 

2.9 

2.0 

1.6

1.8 

2.3 

1.8 

1.6 

1.7

2.9

7.8 

8.2 

5.8 

4.4

5.8 

4.4 

4.7 

4.1 

1.1

2.3

1.8 

2-0 

2.3 

1.7

1.8 

2.3 

2.3 

1.8 

.3 

1.6

Mean

0.33 

4.52 

7.0

12.4

6.5 

4.0 

5.0 

20 

54.4 

37.6 

3.42 

2.91 

5.79

12.7

Sept.

1.4 

1.2

1.2 

4.7 

9.0

10 

14 

9.6 

8.6

9.0

7.8 

6.2 

2.9 

2.6 

2.0

3.5 

5.0 

3.8

4.4 

4.1

6.6 

7.0 

5.8 

4.7 

3.8

3.2 

10 

10 

7.0 

4.4

Run-off in 

acre-feet

20 

269 

430

9,010

400 

222 

307 

1.190 

3,360 

2,240 

210 

179 

345

9,160

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected by ice HOT. 6 to May 1.
114 GREEN RIVER BASIN

Horse Creek near Daniel, Wyo.

Location.- Water-stage recorder, lat. 43°56', long. 110°12', in sec. 10, T. 34 N., R. 112 

w., li; miles nprthwest of Daniel. Datum of gage is 7,349.88 feet above mean sea level, 

datum of 1929.

Drainage area.- 124 square miles.

Records available.- October 1931 to September 1941.

Extremes.- Maximum discharge during year, 470 second-feet May 27 (gage height, 1.90 feet); 

minimum daily not determined (occurred during period of ice effect).

1931-41: Maximum discharge, 1,670 second-feet May 31, 1936 (gage height, 3.53 

feet), from rating curve extended above 800 second-feet; minimum dally, 1 second-foot 

July 22, 23, 1940.

Remarks.- Records excellent except those for period of ice effect or of no gage-height 

record, which are fair. Diversions above station for irrigation.

Cooperation.- Discharge measurements Oct. 1 to June 30 furnished by Bureau of Reclamation.

Discharge, In second-feet, water Tear October 1940 to September 1941

Day

1

a 

s

4 

6

6

7

e

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

87 

28 

29 

SO 

31

Oct.

12 

11 

13 

13 

11

11 

12 

11 

11 

11

10 

10 

10 

10 

10

1111

10 

9.8 

10

10 

10 

10 

10 

10

11 

14 

14 

13 

13 

13

HOT.

14 

14 

14 

13 

*13

13 

11 

12 

12 

10

9.5 

9.0 

9.6

11 

12

12 

13 

13 

12 

11

10 

9.0 

8.0 

7.5 

8.0

8.5 

8.5

9.0 

9.5 

9.0

Dec.

(*) 

> 9.0

Jan.

(*) 

. 7.5

Feb.

(*} 

> 9.0

Month

Dot 

Noi 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

JuJ 

Aug 

Sej

K

ua

ust....................................

ater year 1940-4

Mar.

(*)

> 10

Apr.

23 

24 

22 

24 

22

16 

16 

16 

17 

18

18 

21 

21 

20 

28

34

25 

21

IS 

20

22 

28 

37 

46 

51

51 

40 

64 

60 

69

Secondfoot-days

345.8 

325.0 

279.0

7,961.9

232.5 

252. 0 

310 

892 

3,359 

5,293 

920.7 

1,145 

7O1

14,555.0

toy

62 

56

73 

86 

73

41 

24 

24

20 

14

15 

44 

110 

108 

62

44 

60 

122 

9S 

73

73 

122 

1S6 

282 

238

311 

428 

328 

247 

220 

215

Maximum

14 

14

255

69 

428

387 

86 

100 

31

428

June

190 

168 

172 

190 

288

247 

266 

387 

380 

257

182 

188 

203 

311 

311

276 

215 

172 

144 

133

122 

9S 

90 

84 

74

51 

35 

25 

24 

30

July

37 

56 

64 

53 

55

37 

23 

26 

21 

18

17 

17 

17 

19 

21

19 

17 

15 

11 

9.2

e.o

7.5 

7.0 

14 

32

S6 

74 

49 

34 

23 

24

Minimum

9.8 

7.5

_

16 

14 

24 

7.0 

16 

19

-

Aug.

22 

21 

19 

16 

16

17 

18 

17 

18 

24

74 

100 

84 

60 

47

47 

51 

69 

56 

41

36 

35 

36 

35 

32

32 

32 

26 

23 

21 

21

Mean

11.2 

10.8 

9.0

21.8

7.5 

9.0 

10 

29.7 

124 

176 

29.7 

36.9 

23.4

39.9

Sept.

21 

20 

80 

20 

20

21 

21 

22 

22 

21

20 

19 

19 

19 

19

20 

20 

21 

86 

24

86 

28 

31

30 

29

28 

29 

30 

29 

28

Him- off In 

acre-feet

686 

645 

553

15,780

461 

500 

615 

1,770 

7,650 

10.5OO 

1,830 

8,870 

1,390

28,870

* Winter discharge measurement made on this day.

Hate.- No <?age-helc?ht record Sect. 6-17, 19-30; discharge computed on basis of one discharge 

measurement, recorded ringe In stage, and records for Couth Plney Creek near Big Plnoy, Kyo. 

Stage-discharge relation affectel try ice TOT. 10 to Aor. 3.
GREEN RIVER BASIN 115

Cottonwood Creek near Daniel, wyo. 

Location.- Water-stage recorder, lat. 42°47', long. 110009', In sec. 11, f. 32 N., R. 112 

w., l* miles downstream from forks and 7 miles southwest of Daniel.

Drainage area.- 204 square miles.

Records available.- October 1938 to September 1941. April 1916 to September 1919, 

October 1931 to November 1932 at site 4 miles downstream; records not equivalent.

Extremes.- Maximum discharge during year, 450 second-feet June 9 (gage height, 6.45 feet), 

rrom rating curve extended above 200 second-feet); minimum dally not determined, 

occurred during period of Ice effect.

1938-41: Maximum discharge, that of June 9, 1941; no flow Aug. 19-22, 1940.

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

wnicn are fair. Diversions above station for Irrigation.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished 

by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

6

6 

7 

8 

9 

10

11 

IS 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

11

8.6 

9.7 

13 

12

9.7 

9.1 

9.1 

9.1 

9.1

9.1 

9.1 

8.6 

S.6 

8.6

8.6 

9.1 

8.6 

9.1 

9.1

9.7 

9.7 

9.7 

10 

11

11 

14 

16 

16 

16 

16

Nov.

18 

19 

20 

18 

13

14 

17 

»1S 

15 

12

10 

9.0 

9.6 

11 

12

12 

13 

13 

13 

12

11 

9.0 

8.2 

7.6 

8.0

8.S 

8.8 

9.0

10 

9.6

Dec.

(*) 

> 9.5

Jan.

 9.0

Feb.

(»)

' 8.0

Month

Oel

Hoi 

Dec

(

Jat 

Pel 

Kai 

Api 

Maj 

Jui 

Ju] 

Auj

SB] 

1

*il........ ...... . ....... .........

y.......... ............................

ater year 1940-4.

liar.

(*)

12

Apr.

26

Secondfoot-days

326.4 

368.5 

294.5

6,623.0

279 

224 

372 

750 

2,302 

3,820 

1,298 

1,219 

830

120,083.4

May

«66 

66 

66 

66 

67

70 

59 

50 

41 

40

a46 

a52 

a56 

a 65 

a67

a 65 

a62 

a 60 

a 60 

a 62

a55

a47 

a46 

84 

92

125 

154 

171 

122 

106 

122

Maximum

16 

20

119

171 

368 

135 

94 

45

368

June

94 

67 

69 

70 

111

119 

148 

248 

368 

280

164 

114 

102 

132 

157

178 

ISl 

161 

148 

138

136 

119 

97 

84 

82

67 

66 

46 

46 

49

July

66 

89 

100 

78

57

41 

30 

26 

23 

17

17 

20 

26 

26 

26

22 

18

18 

20 

29

30 

25 

20 

20 

33

77 

136 

89 

56 

44 

38

Minimum

8.6 

7.6

0

40 

46 

17 

23 

20

-

Aug.

37 

37 35* 

32 

29

27 

24 

23 

23 

26

38 

70 

94 

66 

50

66 

60 

59 

44 

38

a34 

a35

a36 

a 33 

a 33

a 35 

35 

32 

29 

26 

25

Mean

10.5 

12.3 

9.5

18.1

9.0 

8.0 

12 

26 

74.3 

127 

41.9 

39.3 

27.7

33.1

Sept.

24 

23

24 

24 

23

23 

24

27 

27 

26

23

21 

20 

20 

20

20 

20 

21 

28 

26

28 

32

38 

39 

36

34 

39 

45 

40 

36

Run-off In 

acre-feet

647 

731 

684

13,140

563 

444 

738 

1,490 

4,670 

7,680 

2,670 

2,420 

1,650

23,980

» Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of one discharge measurement, recorded range 

in stage, and records for South Plney Creek near north Piney, Wyo.

Note.- Stage-discharge relation affected by ice Nov. 5, Nov. 9 to Apr. 30.
116 GREEN RIVER BASIN

East Fork near Big Sandy, wyo.

Location.- Water-stage recorder, lat. 42°40', long. 109°25', In sec. 7, T. 31 N., R. 105 

w., i mile downstream from Jim Creek and 4 miles northeast of Big Sandy.

Drainage area.- 79.2 square miles.

Records available.- October 1938 to September 1941. my 1916 to September 1917 and May 

1921 to November 1923, at site 2 miles downstream, published as East Pork at East 

Pork Canal.

Extremes.- Maximum discharge during year, l,040"second-feet my 27 ( 

from rating curve extended above 420 second-feet; minimum

:e height, 6.07 

ly not determined, 

occurred during period of Ice effect.

1916-17, 1921-23, 1938-41: Maximum discharge, 1,400 second-feet June 23, 1917 

(gage height, 4.6 feet, site and datum then in use), from rating curve extended above 

850 second-feet); minimum discharge observed, 1.2 second-feet Jan. 4, 1940 (discharge 

measurement), but probably less during period of ice effect.

Remarks.- Records good except those for periods of Ice effect, which are fair. No 

diversions above station.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished 

by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

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

23

30

31

Oct.

49

44

49

50

45

40

38

35

33

33

29

29

28

26

25

24

22

21

19

18

18

17

16

16

15

15

19

19

23

23

21

Nov.

20

19

21

*19

20

16

le

16

15

15

16

13

12

13

14

15

16

16

15

15

15

15

13

14

14

14

13

13

13

13

-

Dec.

<»)

12

Jan.

(»)

10

Feb.

<»)

> 8.5

-

-

Month

March. ....................................

April. ....................................

May. ......................................

July. .....................................

Water year 1940-4.L ......................

Mar.

11

Apr.

14

-

Secondfoot-daya

859

463

372

17,710.2

310

238

341

420

13,289

11,468

£.500

949 

637

31,846 '

May

22

24

26

30

35

44

45

47

100

*219

280

426

680

760

675

562

612

824

544

414

536

725

857

735

705

755

857

549

459

386

336

Maximum

50

21

_

"

"

85 

621

165

70 

32

857

June

386

368

450

454

518

389

386

336

410

426

375

378

504

531

508

495

594

621

446

375

378

347

340

294

270

222

183

161

147

126

-

July

112

117

165

145

128

119

117

115

155

145

130

115

98

86

77

66

59

52

49

47

45

40

37

35

38

45

42

36

32

28

25

Minimum

15

12

_

"

22

126

25

16 

14

-

Aug.

23

21

19

16

16

16

17

21

3S

33

70

64

52

44

37

36

37

35

34

32

29

29

28

26

26

29

29

27

24

21

20

Mean

27.7

15.4

12

48.4

10

8.5

11

14

429

382

80*6

V\ A ou. o 

21.2

87.2

Sept".

19

17

16

16

16

14

15

17

19

20

19

18

18

15

14

14

14

15

27

27

26-

29

29

29

28

27

29

32

31

29

Run-off in 

acre-feet

1,700

918

738

36,120

6X6

472

676

833

26,360

22,750

4,960

1 OOA , OoU 

1,260

63,160

« Winter discharge measuronent made on this dayMote.- Stage-discharge relation affected by ice Nov. 13-16, Nov. 30 to May 9.
GREEN RIVES BASIN 

Silver Creek near Big Sandy, Wyo.

117

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 1941.

Extremes.- Maximum discharge during year, 611 second-feet May 22 (gage height, 6.63

 feet), from rating curve extended above 300 second-feet; no flow Oct. 1-8.

1938-41: Maximum discharge, that of May 22, 1941; no flow at times In each year.

Remarks.- Records excellent except those below 10 second-feet, which are fair. One 

small diversion above station.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished

 by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23

24 

25

26 

27 

2S 

29 

30 

31

Oct.

0 

0 

0 

0 

0

0 

0 

0

.1 

.1

.2 

.4

.5 

.6 

.6

.6 

.6 

.6 

.6 

.6

.5

.5 

.4 

.4 

.4

.4 

.8 

1.0 

1.2 

1.0 

1.0

HOT.

2.4 

4.2 

4.2 

 4.4 

3.5

4.7 

4.4 

4.4 

4.2 

3.5

3.2 

3.1 

3.1 

3.3 

3.6

3.7 

3.7 

3.6 

3.4 

3.3

3.2 

3.1

3.0 

3.1 

3.1

3.0 

3.0 

3.0 

3.0 

3.1

Dec.

<*> 

 3.0

Jan.

(*) 

' 2.5

Feb.

<*> 

' 2.5

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Mai

Apj 

Ha] 

Jur 

Ju3 

Au« 

Sei

1

raary

ater year 1940-4 ^

Mar.

(*) 

> 3.0

Apr.

 8.0 

<*>

Secondfoot-days

13.1 

104.5 

93.0

5,555.1

77.5 

70.0 

93.0 

240.0 

8,001 

4,429 

415. S 

32.2 

27.3

13,596.4

May

11 

11 

12 

14 

19

22 

22 

22 

23 

31

111 

236 

344 

390 

377

357 

405 

460 

350 

2S4

348 

474 

SIS 

486 

467

501 

4S2 

372 

320 

278 

254

Maximum

1.2 

4.7

243

SIS 

429 

32 

1.6 

3.5

518

June

25S 

242 

246 

236 

272

429 

226

250 

290 

26S

234 

190 

144 

136 

137

133

126 

110 

92 

72

59 

48 

40 

34 

32

29 

26

24 

24 

22

July

21 

IS 

IS 

18 

16

14 

24 

32 

29 

26

23 

21

IS 

16 

14

12 

9.S 

S.8 

7.9 

7.0

7.6 

S.5 

7.6 

7.0 

7.3

7.3 

6.7 

4.4 

2.2 

1.9 

l.S

Minimum

0 

8.4

0

11 

22 

l.S 

.7 

.3

0

Aug.

1.6 

1.4 

1.2 

.9 

.9

.9 

.9 

.9 

.8

.S

1.0 

1.0 

1.2 

1.0 

1.0

1.0 

1.3 

l.S 

1.0 

.9

.9 

1.2 

1.0 

1.2 

1.2

1.3 

1.2 

1.0 

.9 

.7 

.7

Mean

0.42 

3.48 

3.0

15.2

2.5 

2.5

3.0 

S.O 

258 

148 

13.4 

1.04 

.91

37.3

sept.

0.6 

.6 

.5 

.6 

.5

.5 

.5 

.6 

.6 

.6

.5 

.4

.3 

.3 

.3

.3 

.3 

.3 

.9 

.9

.9

1.0 

1.2 

1.0 

1.0

.9 

1.8 

2.7 

3.2

3.5

Run-off In 

acre-feet

26 

207 

184

11,020

154 

139 

164 

476 

15,870 

8,780 

825 

64 

54

26,960

* Winter discharge measurement made on this day. 

Note.- Stage-discharge relation affected by Ice HOT. 10 to Apr. 30.
118 OREEN RIVER BASIN

New Fork below New Fork Lake, near Cora, wyo.

Location.- Water-stage recorder, lat. 43°05', long. 110°01', in sec. 20, T. 36 N., R. 

no w., 2 miles downstream from New Fork Lake and 9 miles north of Cora.

Drainage area.- 36.2 square miles.

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 430 second-feet May 24 (gage height, 5.39 

reet;, from rating curve extended above 280 second-feet; minimum daily, 0.1 secondfoot May 13 when gates in dam at New Fork Lake were closed.

1938-41: Maximum discharge, that of May 24, 1941; minimum dally, that of May 13,

 1941.

Remarks.- Records good. Flow regulated for Irrigation by New Fork Lake (capacity, 

45,900 acre-feet). No diversions above station.

Coopration.- Gage-height record and discharge measurements Oct. 1 to June'30 furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z

s

4

e

6 

7 

8 

9 

10

11 

IS 

13 

14

ie

16 

17 

18 

19 

SO

81

ss

ss

84

se

86 

27 

88 

SS

SO 

31

Oct.

8.8 

8.8

3.0 

S.S 

2.7

8.7 

2.5 

2.3 

2.1 

1.9

2.1 

2.1 

S.I 

S.I 

1.9

1.9 

1.9 

1.9 

1.9 

1.9

8.7

6.0 

6.0 

6.0 

6.3

6.3 

6.9 

6.6 

6.6 

6.6 

6.6

NOT.

6.6 

6.6 

6.9 

6.9

6.9

6.9 

6.9 

6.6 

6.9 

6.9

6.9 

b6.4 

b6.0 

b6.S 

b6.4

6.6 

6.9 

6.6 

6.6 

6.S

06.0

be.e

be. 8

be. e

bS.S

b5.8 

be. 6

b5.6 

*b5.9 

b5.8

Dec. Jan. Feb.

Month

Oct 

Hoi

Dec

C

Jar 

Pet 

Mai 

Api

Jiu 

Ju]

Aug

Sei 

1

alendar year

ater year

Mar. Apr.

Secondfoot-days

11S.O 

190.8

-

8,765. 7 

6,988 

4,984 

869. S 

83.3

-

May

bo.e 

b.e

*.B

.e

.4

.4

.3 

.4 

.3 

.8

.8 

.8 

.1 

.8 

.8

.2 

.6 

193 

816 

78

72 

74 

886 

404 

394

386 

381 

108 

100 

100 

100

Maximum

6.9 

6.9

-

404 

300 

846 

11 

8.1

-

June

98 

800 

837 

884

837

884 

879

877 

169 

66

66 

66 

67 

147 

860

868 

868 

867 

869 

878

869 

269 

869 

882

300

896

290 

278

see

252

July

846 

840 

838 

836 

888

828 

226 

884 

881 

816

212 

209 

189 

160 

156

164 

149 

146

140 

133

1S4 

130 

188 

188 

118

109 

103 

100 

55 

19 

18

Minimum

1.9

5.6

-

.1 

66 

IS 

7.8 

1.3

-

Aug.

11 

10 

10 

10 

9.6

S.I 

7.3 

7.8 

7.3 

6.7

8.7 

9.0 

3.7 

8.7 

3.7

8.7 

3.4 

3.7 

3.7 

8.7

3.7 

8.7 

8.4 

8.4 

8.4

8.4 

8.1 

8.1 

8.1 

3.1 

8.1

Mean

3.61 

6.36

-

39.8 

831 

161 

8.68 

8.78

-

Sept.

8.1 

8.1 

5.8 

2.S 

S.S

8.6 

S.6 

8.6 

S.S 

8.6

8.3 

S.S 

S.S 

8.3

s.e

8.6

s.e

8.7 

2.6

s.e

8.6 

S.S 

8.3

1.9 

1.9

1.8 

1.9 

1.8 

1.8

1.3

Run-off In 

acre-feet

822

378

-

5,490 

13,730 

9,890 

554 

166

-

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.-
GREEN RIVER BASIN 119

New Fork near Plnedale, Wyo.

Location.- Water-stags recorder, lat. 42°50', long. 109°51', In sec. 15, T. 33 N., R.

 109 W., a quarter of a mile upstream from Pine Creek and 2 miles south of Plnedale.

Drainage area.- 341 square miles.

Rec'.rds available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 1,060 second-feet June 9 (gage height, 8.63

 feet), from rating curve extended above 320 second-feet; minimum dally not determined, 

occurred during period of Ice effect.

1938-41: Maximum discharge, that of June 9, 1941; minimum dally, 13 second-feet 

May 18-21, 23, 1940.

Remarks.- Records good except those for periods of Ice effect, which are fair. Dlver-

 sions above station for Irrigation. Flow regulated for Irrigation by New Fork Lake 

(capacity, 45,900 acre-feet).

Cooperation.- Qage-helght record and discharge measurements Oct. 1 to June 30 furnished 

oy Bureau of Reclamation.

Discharge, In second-feet, water year October 194O to September 1941

Day

1 

2 

Z 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27

as

29 

SO 

31

Oct.

27 

25 

30 

33 

35

32

31 

30 

30 

SO

28 

27 

27 

26 

26

26 

26 

26 

25 

25

27 

27 

27 

26 

26

26 

30 

33 

32 

34 

39

Hov.

«42 

42 

42 

40

30

35 

48 

40 

39 

53

32 

30 

28

30 

30

32 

32 

32 

30 

28

28 

27 

26 

25

27

26 

26 

29 

30 

«28

Dee.

28 

29 

30 

31 

29

26 

2S 

27 

26

 20

20 

20 

20 

21 

23

23 

24 

25 

25 

25

25 

24 

24 

26

22

22 

23 

22 

23 

24 

24

Jan.

(*)

(«) 

21

Feb.

(») 

22

Month

Oot 

Hoi 

Dee

C

Jar 

Fet 

Itel 

API 

to, 

Jut 

Jul 

Aug 

Sej

«

alendar year 194 0.......... ............

fater year 1940-4

liar.

es

29 

29 

99

 a

 27 

27 

27 

26 

28

27 

26 

26 

28 

29

30 

31 

32 

33 

 33

32 

37 

40 

39

37

38 

40 

45 

48

60 

70

Apr.

80 

82 

84 

84 

84

86 

86 

94 

100 

108

97 

103 

146 

123 

134

138

 108 

94 

86 

88

92 

92 

92 

69 

76

74 

90 

80 

71 

64

Secondfoot -day a

892 

967 

759

13,259

651 

616 

1,059 

2,825 

2,165 

8,903 

6,302 

1,589 

931

27,669

May

57 

41 

38 

38 

38

40 

40 

36 

38

37

36 

36 

31 

29 

32

33 

35 

33 

SO 

50

39 

36 

38 

44

61

101 

218 

338 

223 

156 

144

Maximum

39 

48 

31

180

70 

146 

338 

860 

321 

94 

74

860

June

111 

90 

77 

83 

155

252 

335 

522 

854 

860

418 

310 

265 

213 

211

231 

231 

228 

267 

288

346 

356 

346 

324 

294

267 

247 

226 

252 

264

July

234 

244 

265 

252 

252

231 

208 

201 

189 

180

177 

204 

223 

226 

218

211 

194 

184 

187 

321

265 

201 

175 

177 

199

208 

169 

134 

125 

138 

120

HlnlnuB

25 

25

20

13

26 

64 

29 

77 

120 

30 

25

-

Aug.

94 

82 

70 

58 

53

62 

64 

55 

50 

55

71 

84 

64 

55 

52

51 

49 

46 

45 

43

41 

41 

39 

39 

35

35 

35 

31 

30 

30 

30

Mean

28.8 

32.2 

24.5

36.2

21.0 

22.0 

34.2 

94,2 

69.8 

297 

203 

61.3 

31.0

76.8

Sept.

29 

28

30 

30 

29

28 

29 

28 

28 

27

26 

. 86 

26 

26 

27

27 

27 

27 

30 

29

32 

33 

33 

33 

33

32 

35 

37 

34

74

Run-off In 

ae re-feet

1,770 

1,920 

1,510

26,310

1,290 

1,220 

2,100 

5,600 

4,290 

17,660 

12,500 

3,160 

1,860

54,860

* Winter discharge measurement made on this day. 

Mote.- Stage-dlseharge relation affected by lee HOT. 12, 13, 19, 20, 22-24, 

Dec. 4 to Mar. 20, Bar. 26 to Apr. 6.

S, 27, 30, Dee. 1,
120 GREEK RIVER BASIN

New Pork near Boulder, Wyo.

Location.- Water-stage recorder, lat. 42°45', long. 109°44', In sec. 9, T. 32 N., R. 

108 w., an eighth of a mile upstream from Boulder Creek and half a mile southwest of 

Boulder.

Drainage area.- 552 square miles.

Records available.- May 1915 to September 1941.

Average discharge.- 26 years, 388 second-feet.

Extremes.- Maximum discharge during year, 2,090 second-feet May 28 (gage height, 5.44 

reet); minimum dally, 103 second-f^et Oct. 2.

1915-41: 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, 42 

second-feet Dec. 15-17, 1915.

Remarks.- Records excellent except those for period of Ice effect, which are fair. 

Diversions above station for Irrigation.

Cooperation.- Discharge measurements Oct. 1 to June 30 furnished by Bureau of.Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

se

S3 

24 

25

26 

27 

28 

29 

30 

31

Oot.

10S 

103 

121 

132 

125

121 

119 

110 

116 

119

123 

183 

125 

123 

123

123 

123 

123 

123 

121

123 

127 

127 

125 

127

127 

146 

160 

16S 

172 

177

Nov.

ISO 

»180 

180 

175 

163

165 

175 

175 

170 

163

154 

150 

152 

162 

168

165 

162 

158 

154 

150

145 

135 

132 

135 

140

135 

135 

140 

145 

140

Dec.

140 

140 

145 

*145 

145

145 

140 

140 

13S 

135

130 

125 

125 

122 

125

125 

125 

130 

132 

136

135 

130 

130 

130 

125

125 

124 

122 

122 

122 

120

Jan.

115 

110 

110 

114 

115

115 

114 

118 

116 

115

118 

120 

118 

*116 

114

110 

110 

110 

114 

115

115 

114 

115 

113 

113

115 

114 

113 

112 

110 

112

Feb.

114 

114 

114 

114 

115

113 

112 

110 

110 

112

114 

115 

116 

*114 

113

110 

10S 

106 

106 

110

113 

114 

116 

118 

118

114 

110 

115

Month

Oct 

No-v 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Se]

fl

alendar year 1940... ...................

ater year 1940-4

Mar.

115 

120 

124 

122 

120

118 

US 

116 

116 

US

115 

113 

112 

112 

120

125 

130 

132 

135 

*137

140 

143 

145 

150 

145

150 

155 

160 

160 

164 

166

Apr.

172 

180 

185 

185 

185

190 

195 

200 

205 

210

215 

215 

220 

225 

230

230 

230 

228 

*227 

215

206 

210 

212 

215 

215

214 

212 

203 

194 

189

Secondfoot-days

3,983 

4,683 

4,073

70,935

3,533 

3,153 

4,096 

6,212 

22, 510 

41,472 

17,467 

3,139 

5,165

124,511

May

183 

175 

165 

167 

172

172 

1S6 

200 

183 

165

15S 

170 

197 

316 

651

768 

786 

798 

924 

936

864 

828 

906 

1,080 

1,350

1,540 

1,830 

2,070 

1,820 

1,480 

1,270

Maximum

177 

180 

145

1,310

120 

118 

166 

230 

2,070 

1,830 

996 

370 

212

2,070

June

1,060 

966 

906 

900 

1,020

1,200 

1,320 

1,460 

1,680 

1,380

1,540 

1,310 

1,200 

1,180 

1,250

1,380 

1,500 

1,590 

1,710 

1,740

1,700 

1,670 

1,640 

1,640 

1,590

1,500 

1,380 

1,240 

1,170 

1,130

July

996 

906 

852 

690 

629

575 

565 

555 

550 

550

565 

590 

530 

517 

517

490 

, 508 

SOS 

504 

607

575 

499 

470 

486 

517

540 

512 

434 

482 

410 

398

Minimum

103 

132 

120

60

110 

186 

112 

172 

158 

900 

398 

215 

148

103

Aug.

370 

338 

326 

320 

288

268 

270 

260 

254 

254

260 

267 

278 

257 

251

260 

264 

254 

245 

248

242 

242 

242 

245 

239

242 

254 

236 

221 

215 

215

Mean

12S 

156 

131

194

114 

113 

132 

207 

726 

1,382 

563 

265 

173

341

Sept.

212 

209 

209 

206 

200

194 

197 

194 

194 

186

178 

107 

168 

160 

158

153 

14S 

150 

155 

148

155 

160 

162 

153 

153

150 

162 

167 

166 

178

Run-off In 

acre-feet

7,900 

9,290 

8,080

140,700

7,010 

6,260 

8,120 

12,320 

44, 650 

82,260 

34, 650 

16,140 

10,280

247,000

* Winter discharge measurement made on this day.

Mote.- Stage-discharge relation affected by Ice NOT, 11 to Apr.
GREEN RIVER BASIN 121

Willow Creek near Cora, Wyo.

Location.- Water-stage recorder, lat. 43°00', long. 109°56', In sec. 14, T. 35 N., R. 

110 W., a quarter of a mile downstream from forks and 4i miles northeast of Cora.

Drainage area.- 41.8 square miles.

Records available.- October 1938 to December 1941 (discontinued).

Extremes.- Maximum discharge during period October 1940 to December 1941, 95 secondfeet fey 27 (gage-height, 7.03 feet), from rating curve extended above 30 secondfeet; minimum determined, occurred during period of ice effect.

1938-41: Maximum discharge, that of May 27, 1941; minimum daily, 0.8 secondfeet Aug. 4, 5, 10-19, Sept. 1-3, 16, 17, 26, 1940.

Remarks.- Records good except those for periods of Ice effect, which are fair. Several 

small diversions above station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 

30 furnished by Bureau of Reclamation.

Discharge, In second-feet, 1940-41 

1940-41

Dty

1

2

S

4

6

6

7

a

9

10

11

12

IS

14

15

16

17

18

19

80

21

22

25

24

25

26

27

28

29

50

51

Oet.

1.4

1.5

1.7

1.8

1.4

1.4

1.5

1.5

1.4

1.4

1.3

1.3

l.S

1.5

1.3

1.3

1.3

1.3

1.3

1.4

1.4

1.4

1.5

1.7

1.7

1.8

3.4

2.6

2.8

5.1

5.6

Nov.

#5.9

6.2

6.2

5.6

5.3

5.6

5.9

6.2

5.9

6.2

5.2

5.5

5.1

5.2

5.5

5.6

5.5

5.5

5.5

5.4

5.0

4.6

4.1

3.5

3.7

3.7

3,3

3.4

3.8

3.4

-

Dee.

> 4.0

Jan.

(#)

> 4.0

Feb.

(*)

> 4.0

_

_

,-

Har.

(*)

. 4.5

Apr.

> 7.0

(*)

-

"ay

6.2

5.4

5.3

4.8

4.4

3.9

4.4

6.9

5.3

3.8

3.8

4.4

8.7

14

10

8.Y

7.8

17

16

10

8.7

16

21

30

38

57

72

55

28

S3

 22

June

18

17

23

28

52

34

33

47

65

36

23

24

26

40

46

46

38

40

28

25

36

23

20

16

13

5.9

2.6

2,5

3.2

4.4

July

5.0

5.6

5.6

3.5

3.5

2.S

2.0

1.8

1.5

1.2

1.1

1.6

1.5

2.2

4.4

3.5

2.6

2.5

3.9

10

6.0

4.1

3.5

3.2

4.4

4.7

5.0

3.8

2.9

3.2

2.5

Aug.

2.6

2.5

2.5

2.3

2.5

5.0

4.7

3.8

4.7

4.4

6.9

6.9

l.S

l.S

1.9

3.3

3.0

2.0

3.0

1.9

1.5

1.8

1.6

l.S

1.3

1.5

1.5

1.6

1.5

1.5

1.3

Sept.

1.5

1.5

1.5

1.5

1.3

1.3

1.3

1.2

1.2

1.2

1.2

2.0

2.9

2.9

2.9

3.2

3.3

3.6

4.7

4.7

4.7

5.6

5.3

5.3

5.3

5.3

6.0

5,0

4.7

4.7

# Winter discharge measurement made on this day.

b Stage-discharge relation affected by ice Nov. 13-15, Nov. 20, 1940 to Hay 6, and Nov. 16 to 

Dao. 31, 1941.
122 GREET! RIVER BASIN

Discharge, In second-feet, of Willow Craak near Cora, Wyo., 1940-41--Contlnued

1941

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

81

22

23

24

25

26

27

28

89

SO

31

Oet.

5.3

5.6

5.0

5.0

6,9

6.0

6.5

6.9

6.0

5.6

5.6

5.3

3.5

3.5

8.2

8.7

6.9

6.5

6.0

6.0

8.7

10

7.8

6.5

8.7

9.1

9.6

8.7

8.2

6.9

6.5

HOT.

3.5

3.2

3.2

3.5

2.6

3.2

8.6

2,9

6.5

6.0

S.6

«6.5

5.6

3.5

4.7

 bS.O

-

Dee.

 bS.O

Jan. Feb. JUr. Apr. »«T June July Aug. Sapt.

Monthly discharge, In second-feat, 1940-41

Month

Watar year 1940-41 .....................

Secondfoot-days

184.0

1,519.6

96.9

2,542.4

138.1

156.0

2,714.0

Maximum

27

65

6.0

72

6.8

72

Minimum

_

_

3.8

2.5

1.1

1.2

1.1

3.5

-

1.1

Mean

4.0

4.16

7.0

16.8

27.3

3.48

2.64

3.23

6.97

6.76

4.60

5.0

7.44

Run-off In 

acre-feet

301

246

3,010

246

222

277

417

1,030

1,820

214

162

192

5,040

416

274

307

6,380
GREEN RIVER BASIN 123

Lake Creek near Cora, Wyo.

Location.- Water-stage recorder, lat. 43°00', long. 109°54', In sec. 19, T. 35 N., R.

 10y W.', just downstream from Willow Lake and 5 miles northeast of Cora.

Drainage area.- 31.6 square miles.

Records available.- October 1938 to December 1941 (discontinued).

Extremes.- Maximum discharge during period October 1940 to December 1941, 168 second-

 feet June 13 (gage height, 7.88 feet); no flow Nov. 1 to Dec. 31, 1941.

1938-41: Maximum discharge, that of June 13, 1941; no flow Nov. 1 to Dec. 31, 1941.

Remarks.- Records good except those for periods of no gage-height record or those below

 ItTsecond-feet, which are fair. Flow partly regulated for irrigation by Willow Lake 

(capacity, 15,000 acre-feet). No diversion above station.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

rurnisnea by Bureau of Reclamation.

Discharge, in second-feet, 1940-41

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.

0.6

.5

.6

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.4

.4

.4

.4

.4

Nov.

0.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

-

Month

October 1940. .............................

May 9-31, 1941. ...........................

Set

May

_

-

-

_

-

_

-

_

4S

77

75

1

76

73

81

82

83

84

86

66

88

89

90

96

04

106

107

1

1

1

1

Secondfoot-days

12.2

11.7

2,064

3, 599 

g 356,0

24.0 

131*7

1.014.6

09

13

14

02

90

June

92

92

92

95

97

100

102

107

130

152

150

150

136

103

104

106

107

122

140

149

157

159

156

157

137

lie

108

104

84

91

-

Maximum

0.6

.4

114

159 

110

1.1

33 

77

< July

100

98

98

97

98

100

98

96

95

92

91

96

93

97

95

96

97

a97

a98

a99

allO

a95

a90

88

27

3.2

2.2

2.0

1.9

1.4

1.3

Aug.

1.1

1.0

.9

.9

.6

.6

.8

.8

.7

.7

.7

.8

.8

.8

.8

.8

.8

.3

.8

.8

.3

.6

.6

.8

.7

.7

.6

.6

.6

.6

.-6

Sept.

0.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

40

83

-

Oct.

77

72

65

59

59

50

44

40

38

33

31

30

27

27

27

25

19

23

33

37

34

30

24

17

15

12

11

11

8.6

16

15

Mlnimua Mean ^&^

0.3 0.39 24

.3 . 39 23

48 89.7 4,090

84 120 7,140

1.3 76.1 4,680 

.6 .77 48

.2 4.39 261 

3.6 32.7 2,010

record; discharge computed on basis of recorded range in stage and weather

461676 O-42-9
124 GREEN RIVER BASIN

Duck Creek at Cora, Wyo.

Location.- Water-stage recorder, lat. 42°56', long. 110°OQ', In sec. 4, T. 34 N., R. 

110 W., three-quarters of a mile west of Cora. \

Drainage area.- 27.0 square miles.

Records available.- November 1938 to September 1941 (discontinued).

Extremes.- Maximum discharge during year, 25 second-feet Nov. 6 (gage height, 2.76 

 feet): minimum daily, 3.7 second-feet May 29.

1938-41: Maximum discharge, 65 second-feet Mar. 31, 1939 (gage height, 3.07 feet), 

from rating curve extended above 20 second-feet; minimum dally, that of May 29, 1941.

Remarks.- Records fair. Flow Is mainly return water from Irrigated lands.

Cooperation.- Gage-height records and discharge measurements Oct. 1 to June 30 furnished 

by Bureau of Reclamation.

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3

5

6 

7 

S 

9 

10

11 

12 

IS 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

SO 

31

Oct.

7.9 

7.S 

8.5

7.9

7.7 

7.6 

7.7 

7.6 

7.5

7.4 

7.4 

7.3 

7.4 

7.1

7.3 

6.S 

5.7 

6.1 

6.7

6.1 

5.S 

5.S 

5.9 

5.9

5.9 

6.2 

6.2 

5.4 

4.6 

4.6

Nov.

4.6 

4.4 

4.4

7.1

17 

IS 

9.9 

9.2 

9.1

9.2 

7.1 

6.3 

6.4 

6.6

6.7 

6.7 

6.7 

7.6 

9.1

S.S 

S.9 

S.S 

8.8 

S.S

7.S 

7.9 

8.0 

7.9 

7.9

Dec.

7.9 

7.9 

7.8

7.S

7.7 

7.7 

7.7 

7.7 

7.6

7.4 

7.5 

7.5 

7.1 

7.1

7.0 

7.0 

7.1 

7.1 

7.1

7.0 

7.0 

7.0 

7.0 

6.9

6.9 

6.S 

6.S 

6.7 

6.7 

6.7

Jan.

6-7 

6.7 

6.7

6.6

6.6 

6.6 

6.6 

6.6 

6.6

6.6 

6.6 

6.6 

6.6 

6.6

6.6 

6.6 

6.6 

6.6 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5 

6.4

Month

Oct 

NOM 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Ju3 

Aug 

Set

11

Feb.

6.4 

6.4 

6.4

6.4

6.4 

6.3 

6.3 

63 

6.3

6.3 

6.2 

6.2 

6.2 

6.2

6.2 

6.2 

6.2 

6.1 

6.1

6.1 

6.1 

6.1 

6.0 

6.0

6.0 

6.0 

6.0

alendar year 194 0... ...................

ater year 1940-4

liar.

6.0 

6.0 

6.0

6.1

6.1 

6.2 

6.1 

6.0 

5.9

5.9 

S.S 

S.S 

S.S

5.7

5.S 

5.8 

5.9 

5.9 

6.1

6.1 

6.1 

6.0 

5.9 s'.g

6.0 

6.0 

6.0 

6.2 

6.4 

6.5

Apr.

6.8 

6.5 

6.4

6.3

6.1 

6.1 

6.3 

6.4 

6.3

6.3 

6.7 

6.7 

6.1 

6.2

5.6 

5.3 

5.2 

5.2 

5.3

5.6 

S.S 

5.6 

5.6 

5.3

5.8 

6.0 

5.5 

5.4 

5.4

Secondfoot-days

210.1 

23S.S 

225.0

2,355.4

203.6 

173. S 

1S6.1 

17S.2 

146.4 

15S.4 

242.4 

1S9.S 

226.2

2.S7S.S

May

5.4 

5.3 

5.3 

5.2 

5.1

5.1 

5.1 

5.1 

5.0 

5.0

4.9 

4.9 

4.S 

4.S 

4.S

4.7 

4.7 

4.6 

4.6 

4.6

4.3 

4.0 

4.0 

4.0 

4.3

S.S 

5.2 

3.9 

3.7 

4.0 

4.2

Maximum

S.S 

17 

7.9

17

6.7 

6.4 

6.5 

6.8 

5.8 

11 

12 

9.8 

12

17

June

4.2 

4.3 

4.3 

4.4 

a4.6

a4.7 

a4.S 

5.0 

6.2 

5.1

5.0 

5.0 

5.0 

5.1 

5.3

5.2 

5.2 

6.1 

5.2 

5.2

5.3 

5.2 

5.2 

5.3 

5.3

5.3 

5.3 

5.4 

6.2

11

July

9.0 

6.5 

5.2 

5.2 

5.2

5.1 

5.2 

5.6 

6.0 

6.6

7.9 

9.6 

12 

12 

11

11 

10 

10 

10 

9.0

S.O 

7.7 

7.7 

7.9 

S.S

7.2 

6.2 

6.1 

6.1 

7.5 

7.4

Minimum

4.6 

4.4 

6.7

4.4

6.4 

6.0 

5.7 

5.2 

3.7 

4.2 

5.1 

4.5 

6.0

3.7

Aug.

6.2 

6.2 

6.3 

6.4 

6.5

6.6 

6.6 

7.0 

7.7

S.I

9.S 

S.9 

6.9 

5.9 

5.3

5.4 

5.3 

5.2 

5.4 

5.6

S.9 

5.3 

4.5 

4.6 

5.0

5.3 

5.4 

5.4 

5.6 

5.7 

5.8

Mean

6.7S 

7.96 

7.26

6.44

6.57 

6.21 

6.00 

5.94 

4.72 

5.2S 

7.S2 

6.12 

7.54

6.52

Sept.

6.0 

6.0 

6.1 

6.3 

6.3

6.4 

6.6 

6.6 

6.6 

6.6

6.6 

6.6 

7.2 

7.6 

7.S

7.6 

7.5 

7.5 

7.5 

7.5

7.3 

7.3 

7.3 

7.3 

7.2

8.9 

10 

11 

12 

11

Run-off In 

acre-feet

417 

474 

446

4,670

404 

345 

369 

353 

290 

314 

4S1 

376 

449

4,720

a No gage-height record; discharge Interpolated.
GREEN RIVER BASIN 125

Pine Creek at Pinedale, Wyo.

Location.- Water-stage recorder, lat. 42°52', long. 109°52', in sec. 33, T. 34 N., R. 109 

W., at Pinedale, 3 miles upstream from mouth. Datum of gage is 7,164.3 .feet above mean 

sea level, adjustment of 1912.

Drainage area.- 118 square miles.

Records available.- April to October 1904, May 1915 to September 1941.

Average discharge.- 26 years, 132 second-feet.

Extremes.- Maximum discharge during year, 952 second-feet June 23 (gage height, 3.87 feet), 

from rating curve extended above 640 second-feet; minimum daily, 5.4 second-feet Nov. 10. 

1904, 1915-41: Maximum discharge, 2,310 second-feet June 17, 1918 (gage height, 5.0 

feet); minimum, 2 second-feet Apr. 1-26, May 6-8, 1931.

Remarks.- Records excellent except those for period of ice effect, which are fair. Diversions above station for irrigation. Flow regulated by Fremont Lake (regulated capacity, 

15,000 acre-fee,t).

Cooperation.- Discharge measurements Oct. 1 to June 30 furnished by Bureau of Reclamation.

Rating table, water year 1940-41, except period of Ice effect (gage height, In feet, and discharge,

In second-feet)

0.6 

.7 

.8 12

18

34

1.3 

1.5 

1.7 

2.1 

2.5

54

80

114

206

324

3.0 

3.5 

3.9

510

740

970

Discharge, In second-feet, water year JJptober 1940 to September 1941

Day

1 

2 

3

4 

6

6 

7 

8 

9 

10

11 

18 

13

14 

16

16 

17 

18 

19 

20

81 

22 

23 

84 

86

26 

27 

28 

89 

30 

31

Oct.

13 

17 

23 

25 

20

20 

16 

19 

20 

17

16 

16 

16 

15 

15

13 

12 

13 

13 

13

14 

14 

14 

14 

14

14 

16 

19 

17 

17 

14

NOT.

10 

10 

10 

9.5 

9.0

8.5 

6.2 

6.2 

6.| 

5:4

10 

32 

37 

33 

28

22 

22 

23 

24 

28

24 

24 

37 

38 

38

38 

38 

37 

23 

24

Dee.

(*) 

! 36

Jan.

<«) 

32

Feb.

(*) 

 30

Month

Oe1 

Hoi 

Dec

<

Jar 

Fe» 

Mai

Ap:

Jui 

Ju] 

AU{ 

S»j

1

alendar year 1940. .....................

luapy

 11. ....................................

jtember. t

' ter yet

»m

* 1940-4

__»»? -

(*) 

28

.Apr.

44

Secondfoot-days

501 

660.6 

930

21,820.8

992 

840 

868 

1,320 

8,694 

19,086 

5,538 

2,703 

1,545

43,677.6

May

40 

41 

44 

48 

46

39 

53 

54 

47 

39

39 

50 

70 

274 

289

283 

277 

271 

289 

295

298 

298 

311 

398 

550

665 

817 

822 

735 

640 

572

Maximum

25 

38

760

8E2 

910 

451 

116 

74

910

June

506 

462 

440 

42S 

447

466 

478 

498 

538 

526

478 

459 

466 

494 

554

655 

730 

822 

904 

904

886 

886 

904 

910 

874

822 

740 

655 

604 

550

July

451 

365 

314 

172 

160

154 

165 

184 

201 

209

214 

182 

105 

100 

105

114 

168 

170 

158 

158

149 

151 

160 

172 

172

182 

172 

138 

143 

129 

121

Minimum

12 

5.4

.1

4.4

39 

428 

100 

67 

37

5.4

Aug.

101 

101 

116 

107 

85

77 

67 

69 

70 

72

69 

82 

85 

85 

86

90 

93 

82 

85 

90

91 

93 

93 

94 

93

96 

96 

91 

85 

82 

77

Mean

16.2 

22.0 

3O

59.6

32 

30 

28 

44 

280 

9 636 

179 

8^.2 

51.6

120

Sept.

74 

70 

70 

66 

64

64 

66 

65 

64 

 61

59 

55 

52 

49 

48

46 

45 

43 

41 

38

42 

45 

39 

38 

37

38 

41 

41 

42 

42

Run-off In 

acre-feet

994 

1,310 

1,840

43,270

1,970 

1,670 

1,720 

2,620 

17,240 

37 , 860 

10,980 

6,360 

3,060

86,620

* Winter 'discharge measurement made on this day.

j» Stags-diecharge relation affected by Ice Dec. 1 to Apr. 30.
126 GREEN RIVER BASIN

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

Location.- Water-stage recorder, lat. 42°53', long. 109°43', in see. 26, T. 34 N., R. 108 

W., 14 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 1941.

Extremes.- Maximum discharge during year, 761 second-feet May 28 (gage height, 6.07 feet), 

from rating curve extended above 500 second-feet; minimum daily, 8.6 second-feet Oct. 1.

1938-41: Maximum discharge, that of May 28, 1941; minimum daily, 3.7 second-feet 

Aug. 30 to Sept. 1, 1940, probably less during period of ice effect.

Remarks.- Records excellent except those for period of ice effect, which are fair. Several 

small diversions above station for irrigation.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished by 

Bureau or Reclamation.

Rating table, water year 1940-41, except periods of loe effect (gage height, In feet, and discharge,

In second-feet)

2.7

2.8

2.9

3.0

3.2 

3.4

114

200

4.8 

6.1

398

770

Discharge, In seccnd-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

8.6 

10 

17 

22 

29

36 

42 

50 

55 

58

61 

62 

64 

62 

62

62 

65 

68 

65 

62

61 

58 

57 

57 

56

55 

57 

57 

55 

55 

53

HOY.

53 

52 

52 

52 

50

48 

48 

48 

48 

47

46 

45 

42 

41 

41

41 

41 

41 

41 

40

39 

38 

38 

37 

36

34 

34 

33 

32 

32

Dec.

31 

 31 

31 

31 

30

29 

29 

28 

27 

27

26 

25 

25 

24 

24

24 

23 

24 

25 

25

25 

24 

24 

24 

24

23 

23 

23 

24 

24 

23

Jan.

(*) 

19

Feb.

.(*) 

17

Month

Oct 

Nc-o 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

V

11.....................................

ater year 1940-4 I

Mar.

(*) 

24

Apr.

32 

33 

34 

34 

34

34 

34 

34 

34 

34

35 

35 

35 

36 

37

37 

37 

37 

36 

35

35 

36 

37 

38 

38

*38 

37 

38 

40 

41

Secondfoot -days

1,581.6 

1,270 

800

23,299.6

589 

476 

744 

1,075 

10,411 

13,598 

4,480 

1,715 

920

37,659.6

Bay

42 

45 

48 

56 

66

77 

86 

94 

101 

105

110 

143 

217 

330 

423

434 

420 

423 

462 

454

423 

412 

457 

549 

619

668 

737 

740 

650 

552 

468

Maximum

68 

53 

31

546

41 

740 

569 

255 

80 

46

740

June

409 

372 

359 

367 

420

476 

499 

496 

524 

527

504 

454 

415 

420 

465

507 

535 

549 

569 

558

521 

482 

468 

468 

462

432 

390 

351 

315 

284

Minimum

8. 

32 

23

-

32 

42 

284 

85 

46 

24

. -

July

255 

231 

207 

189 

178

171 

167 

169 

176 

182

187 

187 

180 

169 

154

138 

126 

120 

114 

110

105 

101 

101 

101 

103

101 

98 

94 

93 

88 

85

Aug.

80 

76 

71 

66 

64

61 

57 

55 

52 

52

50 

48 

47 

46 

48

50 

51 

51 

52 

52

53 

53 

55 

56 

57

57 

56 

53 

51 

48 

47

Mean

3 51.0 

42.3 

25.8

63.7

19 

17 

24 

35.8 

336 

453 

145 

55.3 

30.7

103

Sept.

46 

44 

42 

41 

39

38 

38 

37 

36 

33

31 

29 

29 

28 

27

26 

26 

26 

26 

25

26 

25 

25 

25 

24

24 

26 

26 

26 

26

Run-off In 

acre-feet

3,140 

2,520 

1,590

46,230

1,170 

944 

1,460 

8,130 

20,650 

26,970 

8,390 

3,400 

1,820

74,700

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected by Ice Dec. 15-29, Jan. 1 to Apr. 25.
GREEN RIVER BASIN 127

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 1941. May 1904 to October 1905 at site 14 

mnes downstream, published as Fall Creek at Fayette.

Extrenes.- Maximum discharge during year, 273 second-feet May 27 (gage height, 5.40 feet), 

from rating curve extended above 175 second-feet; minimum daily, 1.9 second-foot Sept. 

14.

1904-5, 1938-41: Maximum discharge, 480 second-feet June 19-21, 1904 (gage height, 

3.00 feet, site and datum then in use), from rating curve extended above 200 secondfeet; minimum, 0.3 second-foot Dec. 4, 1939 (discharge measurement).

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

rair. Practically no diversions above station.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished by 

bureau of Reclamation.

Rating table, water year 1940-41, except period of ice effect (gage height, in feet, and discharge,

in second-feet)

2.7 1.3 3.0 7.3 3.6 34 4.5 139 

2.8 2.5 3.2 14 3.7 42 5.5 289 

2.9 4.5 3.4 22.5 3.9 62

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

9.2 10' 9»2

10 

10

11

12 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

13 

13 

13

12 

12 

12 

12 

12

12 

12 

13 

13 

13 

14

Nov.

14 

14 

14 

13 

13

3.3 

2.7 

2.7 

2.7 

2.7

2.7 

3.1 

4.1 

4.5 

4.5

4.1 

3.9 

3.7 

3.9 

4.5

4.3 

4.5 

4.5 

5.6 

5.6

5.9 

7.3 

7.0 

6.5 

6.2

Dec.

5.9 

5.6 

5.6 

5.9 

5.9

5.9 

6.2 

6.2 

6.2 

5.9

5.9 

a5.0 

a4.4 

a4.2 

a4.8

a5.2 

a6.0 

a7.0 

8.6 

7.3

7.0 

7.3 

7.6 

7.0 

6.7

6.2 

5.9 

6.2 

6.2 

6.2 

6.2

Jan.

6.H 

6.2 

6.2 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

6.5 

6.2 

6.2 

6.2 

6.2

6.2 

6.2 

6.2 

5.9 

5.9

5.9 

5.9 

5.9 

5.9 

5.9

5.9 

S.3 

5.1 

5.1 

5.1 

4.8

Feb.

4.8 

5.1 

5.1 

5.1 

5.1

5.1 

4.8 

4.3 

4.3 

4.3

4.3 

4.5 

4.5 

4.5 

4.5

4.5 

4.5 

4.3 

4;3 

4.3

4.5 

4.5 

4.5 

4.5 

4.5

4.5 

4.3 

4.3

Month

Oct 

NOM

Dec

C

Jar 

Pel 

Mar 

Api 

Maj 

Jur 

Jul 

Aug 

Sei

1

alendar year 19 10. .....................

ater year 1940-

liar.

4.3 

4.3 

4.5 

4.5 

4.5

4.5 

4.5 

4.5 

4.5 

4.3

4.3 

4.1 

4.1 

4.3 

4.3

4.3 

4.1 

4.1 

4.1 

4.1

4.1 

4.1 

3.9 

3.7 

3.7

3.9 

3.5 

3.7 

3.9 

4.3 

4.3

Apr.

4.3 

4.3 

4.5 

4.5 

4.8

4.5 

4.5 

5.3 

4.5 

5.1

5.6 

5.9 

6.5 

7.0 

7.0

7.3 

7.3 

7.9 

7.3 

7.3

7.6 

7.9 

8.3 

7.9

8.3

9. S 

10 

10 

11 

12

Secondfoot -days

367.4 

178.5 

190.2

6,697.1

186.6 

127.8 

129.3 

207.6 

3,639 

4,977 

1,185 

277.0 

77.2

11,542.6

May

12 

14 

14 

12 

14

17 

19 

20 

22 

23

25 

33 

51 

87 

135

159 

157 

174 

18S 

171

161 

174 

208 

232 

236

243 

263 

240 

200 

175 

160

Maximum

14 

14 

8.6

177

6.5 

5.1 

4.5 

12 

263 

214 

80 

17 

4.3

263

June

143 

139 

140 

149 

175

186 

175 

170 

184 

192

180 

, 166 

161 

174 

186

188 

199 

214 

211 

192

181 

175 

175 

170 

160

147 

133 

118 

104 

90

July

80 

70 

66 

61 

59

57 

53 

50 

50 

47

45 

41 

39 

36 

33

31 

30 

30 

29 

27

27 

26 

25 

24 

24

23 

22 

22 

21 

19 

IS

Aug.

17 

16 

15 

14 

13

13 

12 

12 

12 

11

10 

9.9 

8.6 

7.3 

7.3

7.6 

7.3 

7.3 

7.0 

6.5

6.2 

5.9 

5.6 

5.6 

5.6

5.9 

6.2 

6.2 

5.6 

5.3 

5.1

Minimum Mean

9.2 11.9 

2.7 5.95 

4.2 6.14

18.3

4.S 6.02 

4.3 4.56 

3.5 4.17 

4.3 6.92 

12 117 

90 166 

18 38.2 

5.1 8.94 

1.9 2.57

1.9 31.6

Sept.

4.3 

4.1 

4.1 

3.7 

3.5

3.3 

2.9 

2.5 

2.4 

2.1

2.1 

2.1 

2.0 

1.9 

2.0

2.0 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2.3 

2.3 

2.3

2.3 

2.3 

2 3 

2)3 

2.3

Run-off In 

acre-feet

729 

354 

377

13,280

370 

253 

256 

412 

7,220 

9,870 

2,350 

549 

153

22,890

a No gage-height record; discharge computed on basis of weather records.
128 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 

w., j. mile downstream from outlet of Boulder Lake and 5 miles north of Boulder.

Drainage area.- 130 square miles.

Records available.- October 1938 to September 1941. April 1904 to October 1906, May 1915 

to October 1924, May 1931 to November 1932, chain gage at site 4 miles downstream; records not equivalent.

Extremes.- Maximum discharge during year, 1,530 second-feet May 27 (gage height, 5.08 feet), 

from rating curve extended above 1,100 second-feet; minimum daily, 0.5 second-foot Nov. 

15-18.

1938-41: Maximum discharge, that of May 27, 1941; no flow Nov. 28, 1939, to Apr. 

15, 1940.

Remarks.- Records good except those for period of ice effect, which are fair. Flow

slightly regulated by Boulder Lake (capacity, 11,000 acre-feet). No diversions above 

station.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished by 

Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Cay

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.

55 

56 

61 

66 

67

68 

68 

70 

70 

68

68 

67 

67 

67 

67

66 

66 

66 

64 

64

61 

60 

60 

56 

55

54 

55 

11 

1.6 

1.1 

1.4

Nov.

1 7 

13 

52 

26 

26

24 

24 

23 

22 

22

20 

15 

16 

8.0 

.5

.5 

.5 

.5 

2.8 

34

30 

30 

26 

12 

130

47 

5.2 

5.2 

5.2 

4.9

Dec.

5.5 

»5.2 

5.5 

5.2 

5.2

5.2 

5.2 

5.5 

5.2 

5.5

5.4 

5.3 

5.3 

5.2 

5.2

5.4 

5.4 

5.4 

5.5 

5.6

5.5 

5.5 

5.5 

5.4 

5.4

5.5 

5.5 

5.4 

5.4 

5.4 

5.4

Month

Oct 

NOTI 

Dec

C

Jar 

Pet 

Mar 

Apr 

Mas 

Jur 

Jul 

Aug 

Set

n

Jan.

(*) 

, 5.2

Feb.

(*)

> 4.3

alendar year 1940. ..............

uary

ater year 1940-<H. . .

liar.

, 6.0

Apr.

20

#46 

48 

51

55 

58 

61 

61 

83

Secondfoot -days

1,727.1 

627.0 

166.8

36,086.0

161.2 

117.6 

186.0 

903 

18,962 

25,469 

7,215 

2,838 

2,832

61,204.7

May

146 

146 

155 

162 

164

164 

164 

164 

164 

198

272 

283 

298 

330 

397

530 

600 

745 

869 

792

745 

836 

1,080 

1,260 

1,330

1,380 

1,490 

1,330 

1,090 

913 

765

Maximum

70 

130 

5.6

1,060

1,490 

1,170 

352 

157 

124

1,490

June

695 

675 

705 

803 

940

979 

918 

886 

902 

913

852 

792 

830 

946 

1,030

1,040 

1,070 

1,150 

1,170 

1,060

979 

946 

836 

786 

770

725 

635 

550 

475 

411

July

352 

310 

294 

286 

283

272 

265 

265 

258 

246

239 

236 

224 

211 

214

224 

224 

227 

224 

221

219 

216 

211 

206 

203

203 

191 

174 

174 

172 

169

Minimum

1.1 

.5 

5.2

0

146 

411 

169 

75 

70

-

Aug.

157 

124 

100 

100 

98

98 

96 

96 

94 

94

94 

92 

92 

92 

92

94 

90 

84 

83 

83

81 

81 

83 

83 

83

83 

81 

79 

79 

77 

75

Mean

55.7 

20.9 

5.38

96.6

5.2

4.2 

6.0 

30.1 

612 

849 

233 

91.5 

94.4

168

Sept.

74 

72 

72 

72 

70

70 

70 

88 

122 

110

102 

98 

94 

92 

90

68 

88 

86 

104 

124

120 

118 

110 

108 

102

102 

100 

98 

94 

92

Run-off in 

acre-feet

3,430 

1,240 

331

71,580

320 

233 

369 

1,790 

37,610 

50,520 

14,310 

5,630 

5,620

121,400

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Dec. 11 to Apr. 22.
GREEN RIVER BASIN 129

North PIney Creek near Mason, Wyo.

Location.- Water-stage recorder, lat, 32°40', long. 110°21', in sec. 19, T 31 N., R. 113 

lies west of Mason.

Drainage area.- 5Q square miles.

Records avallable.- May 1915 to October 1916, October 1931 to September 1941 (no winter 

records prior to 1940).

Extremes.- Maximum discharge during year, 345 second-feet June 18 (gage height, 2.S7 feet); 

minimum daily, 6 second-feet Nov. 24, may have been less during winter.

1915-16^ 1931-41: Maximum discharge, 613 second-feet June 19, 1916 (gage height, 

3.93 feet), from rating curve extended above 450 second-feet; minimum not determined, 

probably occurred during winter.

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

several small diversions above station.

Cooperation.- Results of discharge measurements Oct. 1 to June 30 furnished by Bureau of 

ReciaffiatTon.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

S 

3

4 

5

6

7

e

9

10

11

12 

13 

14 

15

16 

17 

18 

19

so

21 

22 

23 

24 

25

26 

37 

28 

29 

30 

51

Oot.

17 

16 

18 

18 

17

16 

16 

»16 

13 

16

16 

18 

15 

15 

15

15 

15 

14 

14 

14

14 

14 

15 

14 

14

14 

17 

15 

14 

16 

16

Nov.

16 

16 

16 

14 

11

»18 

14 

14 

12 

10

8 

7 

S 

9 

11

11 

12 

12 

12 

10

8 

7 

7 

6 

7

S 

8 

8 

9 

8

Dec.

(*) 

, 8.0

Jan.

(*) 

> 8.0

Feb.

(*) 

> 8.5

Month

00 1 

No\ 

Dec

C

Jar 

Fel 

Mar

API 

Ma, 

Jur 

Ju3 

Au« 

Sej

H

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

fater year 1940-4

Mar.

(*) 

12

Apr.

15

Secondfoot -days

476 

311 

248.0

9,888.9

248.0 

238.0 

372 

450 

2,626 

4,904 

2,124 

1,314 

755

13,966.0

May

28 

31 

34

3S 

41

36 

28 

»29 

3S 

47

58 

72 

91 

96

SI

76 

80 

88 

82 

73

78 

92 

119 

140 

136

160 

167 

14S 

127 

115 

108

Maximum

IS 

16

206

167 

234 

101 

71 

28

234

June

98 

99 

111 

127 

159

143 

148 

151 

158 

130

123 

136 

154 

177 

210

21S 

224 

234 

226 

218

212 

206 

198 

190 

181

159 

143 

133 

126 

112

July

101 

96 

88 

84 

79

75 

81 

84 

79 

78

76 

78 

71 

71 

66

62 

59 

68 

59 

61

63 

50 

4S 

64 

72

71 

63 

67 

52 

50 

48

Minimum

14 

6

_

28 

98 

4S 

30 

22

-

Aug.

46 

43 

41 

39 

3S

 3S 

39 

42 

51 

30

71 

64 

54 

43 

41

4S 

47 

SI 

43 

39

3S 

3S 

36 

35 

35

37 

36 

32 

31 

30 

30

Mean

15.4 

10.4 

S.O

27.0

8.0 

S.5 

12.0 

16.0 

81.6 

163 

68.5 

42.4 

25.2

38.3

Sept.

28 

28 

27 

28 

27

86 

28 

28 

27 

27

25 

24 

24 

23 

23

23 

22 

24 

25 

22

23 

24 

27 

25 

24

22 

28 

26 

24 

23

Run-off in 

aore-feet

944 

617 

492

19,610

492 

472 

738 

893 

5,010 

9,730 

4,210 

2,610 

1,600

27,710

* Winter discharge measurement made on this day. .

Note.- Stage-discharge relation affected by loe Hov. 5, 6, Nov. 9 to May 7.
130 GREEN RIVER BASIN

Middle Plney Creek below South Fork, near Big Plney, Wyo.

Location.- Water-stage recorder, lat. 42°36', long. 110°28', in sec. 7, T. 30 N., R. 114 

W., 1 "die downstream from South Fork and 18 miles northwest of Big Piney.

Drainage area.- 34.3 square miles.

Records available.- July 1939 to September 1941.

Extremes.- Maximum discharge during year, 91 second-*-feet June 23 (gage height, 5.83 feet); 

minimum observed, 1.0 second-foot Mar. 19 (discharge measurement), probably less during 

period of Ice effect.

1939-41: Maximum discharge, that of June 23, 1941; minimum, that of March 19, 1941.

Remarks.- Records excellent except those for periods of ice effect or no gage-height 

record, which are fair.

Cooperation.- Gage-height record and discharge measurements Oct. i to June 30 furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

S3 

24 

25

26 

27 

SB 

29 

30 

31

Oct.

7.1 

.1 

.7 

.4 

.1

.1 

.4 

6.8 

6.8

7.1

6.8 

6.8 

6.8 

6.6 

6.8

6.6 

6.8 

6.8 

6.5 

6.5

6.5 

6.5 

6.5 

6.5 

6.5

6.5 

7.1 

6.8 

6.8 

6.5 

6.5

Nov.

6.5 

6.2 

5.9 

5.8 

5.6

»6.0 

6.8 

6.5 

6.0 

5.5

5.0 

4.8 

5.0 

5.5 

6.0

6.6 

6.6 

6.6 

6.2 

5.5

5.0 

4.5 

4.0 

3.6 

4.0

4.2 

4.3 

4.2 

4.2 

4.1

Dec.

(*)

Jan.

(*)

Feb.

(*)

Month

Oct 

Non 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

VI ater year 1940-4 ^

Mar.

(*)

Apr.

Secondfoot-days

211.7 

160.7 

124.0

4,016.5

77.5 

42.0 

62.0 

180.0 

847 

1,876 

1,537 

762 

371

6,250.9

May

10 

.12 

15 

18 

S2

20 

17 

»15 

15 

19

21 

23 

24 

23 

20

20 

23 

28 

27 

a24

a26 

a30 

a40 

a45

a44

a49 

a47 

46 

44 

41 

39

Maximum

7.7 

6.8

46

49 

90 

68 

35 

15

90

June

38 

36 

37 

41 

47

44 

48 

49 

50 

46

43 

43 

48 

52 

56

64 

69 

79 

S6 

66

87 

88 

90 

87 

84

80 

78 

75 

73 

70

July

68 

68 

67 

66 

64

63 

61 

60 

57 

56

55 

54 

52 

. 50 

49

48 

47 

46 

46 

44

43 

42 

42 

41 

42

40 

36 

34 

33 

32 

31

Minimum

6.5 

3.6

-

10 

36 

31 

16 

11

-

Aug.

30 

29 

27 

27 

25

25 

25 

24 

24 

29

35 

33 

31 

27 

27

26 

26 

26 

24 

23

23 

22 

a21 

a21 

a21

a22 

a20 

18 

18 

17 

16

Mean

6.83 

5.36 

4.0

11.0

2.5 

1.5 

2.0 

6.0 

27.3 

62.5 

49.6 

24.6 

12.4

17.1

Sept.

15 

13 

13 

13 

12

12 

12 

 12 

12 

12

11 

11 

11 

11 

12

12 

12 

14 

13 

13

13 

13 

13 

13 

12

12 

14 

12 

12 

11

Run-off In 

acre-feet

420 

319 

246

7,970

154 

83 

123 

357 

1,680 

3,720 

3,050 

1,510 

736

12,400

» Winter discharge measurement ma'de on this day.

a No gage-height record; discharge computed on basis of recorded range In stage and records for 

North Plney Creek near Maaon, Wyo.

Note.- Stage-discharge relation affected by Ice Nov. 4-6, Nov. 9 to May 7.
GREEN RIVER BASIN 131

South Piney Creek near Big Piney, Wyo.

Location.- Water-stage recorder, lat. 42°31', long. 110°19', In sec. 9, T. 29 N., R. 113 

H., iiuO feet downstream from Beaver Creek and 10 miles southwest of Big- Piney.

Drainage area.- 117 square miles.

Records available.- October 1938*to September 1941.

Extremes.- Maximum discharge during year, 280 second-feet June 9 (gage height, 7.20 feet), 

Trom rating curve extended above 200 second-feet; minimum dally not determined, occurred 

during period of ice effect.

1938-41: Maximum discharge, 321 second-feet May 31, 1939 (gage height, 7.56 feet), 

from rating curve extended above 200 second-feet; minimum daily not determined, occurred 

during period of ice effect.

Remarks.- Records good except those for period of ice effect, which are fair. No dlversions above station.

Cooperation.- Gage-height record and discharge measurements Oct. 1 to June 30 furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

22 

20 

19 

22 

20

16 

16 

16 

16 

17

16 

16 

16 

15 

13

13 

13 

12 

13 

13

13 

13 

13 

13 

14

14 

19 

19 

17 

19 

19

HOT.

20 

IB 

SO 

19 

14

*15 

19 

SO 

16 

13

12 

10 

12 

13 

16

16 

17 

17 

17 

15

13 

12 

12 

11 

13

14

14 

15 

16 

14

Dec.

(*) 

15

Jan.

(*)

> 15

Feb.

(*) 

11

Month

Oct

Noi 

Dec

C

Jar 

Pel 

Mat 

Api 

Ma, 

Jur 

Ju] 

Aug 

Sej

VIrater year 1940-4

liar.

(*) 

10

Apr.

> 20 

(*)

Secondfoot -days

497 

454 

465

7,739.6

465 

308 

310 

600 

2,279 

3,330 

1,630 

1,136 

826

12,300

May

44 

49 

54 

60 

65

60 

46 

47 

63 

85

92 

91 

89 

88 

74

70 

66 

71 

73 

66

63 

62 

66 

73 

77

91 

106 

114 

95 

93 

86

Maximum

22 

20

63

114 

217 

91 

73 

43

217

June

76 

71 

70 

72 

86

SB 

105 

116 

217 

147

113 

106 

106 

110 

113

121 

120 

126 

126 

127

127 

123 

123 

126 

116

109 

102 

96 

96 

96

July

91

84 

84 

79 

74

65 

65 

68 

59 

52

54 

64 

59 

63 

56

54 

48 

44 

41 

44

37 

33 

32 

31

37

43

41 

36 

32 

31 

29

Minimum

12 

11

-

44 

70 

29 

25 

22

-

Aug.

30 

30 

2S 

25 

25

29 

35 

33 

34 

37

53 

73 

53 

45 

41

40 

44 

46 

42

37

34 

a34 

a34 

a33 

a33

a35 

a34 

32 

30 

23 

29

Mean

16.0 

15.1 

15.0

21.1

15.0 

11.0 

10.0 

20.0 

73.5 

111 

52.6 

36.6 

27.5

33.7

Sept.

28 

26 

26 

25 

24

23 

23 

25 

25 

25

23

22 

23 

23 

23

23 

24 

26 

32 

2S

29 

31 

43 

37 

32

29 

34 

35 

30 

29

Run-off In 

acre-feet

9S6 

900 

922

15,350

922 

611 

615 

1,190 

4,520 

6,600 

3,230 

2,250 

1,640

24,390

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of recorded range In stage and records for 

Horth Piney Creek near Mason.

Hote.- Stage-discharge relation affected by ice Hov. 20 to Apr. 30.
132 GREEN RIVER BASIN

Labarge Creek near Labarge Meadows ranger station, Wyo.

Location.- Water-stage recorder, lat. 42°30', long. 110°40', in sec. 8, T. 29 N., R. 116 

W., a quarter of a mile upstream from Crystal Creek, 2 miles southeast of Labarge 

Meadows ranger station, and 29 miles northwest of Labarge.

Drainage area.- 6.3 square miles.

Records available.- October 1940 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 103 second-feet May 23 (gage height, 6.75 feet), 

rrom rating curve extended above 45 second-feet; minimum daily, 2.8 second-feet Dec. 8, 

9, probably less during period of no record.

Records.- Records good except those for periods of no gage-height record, which are fair.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

W

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

4.5 

4.5 

4.8 

4.5 

4.5

4.5 

4.5 

4.2 

4.5 

4.2

4.2 

4.2 

4.2 

4.2 

4.2

4.2 

4.2 

4.2

4.2 

4.2

4.2

4.2 

4.2 

4.2 

4.0

4.5 

4.5 

3.8 

4.0 

4.8 

5.0

NOT.

5.0 

5.0 

5.0 

4.5 

4.0

4.5 

4.5 

4.5 

b4.5 

b4.4

b4.1 

b4.0 

b4.0 

b4.2 

b4.3

b4.5 

4.8 

4.5 

4.5 

4.5

4.5 

4.2 

4.2 

4.2 

4.0

3.8 

3.8 

4.0 

4.0 

3.6

Dec.

3.4 

3.4 

3.4 

3.2 

3.2

3.0 

3.0 

2.8 

2.8

Jan. Feb.

Month

Oct 

Not 

Dec

C

Jar 

Fel 

Mai 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sej

H

ember ! 

alendar

-9. .....---------------- --- --

year

r 11-31. ................................

rater year

Mar. Apr.

Secondfoot -days

134.1 

129.6 

26.2

-

1,137 

1,025 

305.8 

202.1 

162.4

-

May

20 

30 

44 

45 

34

35 

50 

54 

39

41

51 

64 

74 

72 

69

74 

78 

a76 

a 65 

a62 

a 60

Maximum

5.0 

5.0 

3.4

-

7S 

57 

15 

7.6 

7.2

-

June

a57 

a52 

47 

49 

57

4S 

48 

45 

49 

41

38 

37 

37 

37 

36

35 

32 

30 

28 

27

25 

22 

22 

20 

20

18 

18 

17 

17 

16

July

15 

14 

14 

13 

12

12 

12 

12 

11 

11

11 

10 

10 

10 

9.6

9.6 

9.0 

9.0 

9.6 

9.0

S.6 

8.2 

8.2 

7.6 

7.6

7.6 

7.2 

7.2 

7.2 

6.8 

6.B

Minimum

3.8 

3.6 

2.B

-

20 

16 

6.8 

5.5 

5.0

-

Aug.

6.8 

6.5 

6.2 

6.2 

6.2

6.2 

6.5 

6.5 

6.5 

6.8

7.2 

7.6 

7.2 

7.2 

7.2

7.2 

7.2 

7.2 

6.8 

6.5

6.2 

6.2 

6.2 

6.2 

6.2

6.5 

6.0 

5.B 

5.5 

5.8 

5.8

Mean

4.33 

4.32 

3.13

-

54.1 

34.2 

9.86 

6.52 

5.41

-

Sept.

5.5 

5.5 

5.5 

5.5 

5.2

5.2 

5.5 

5.8 

5.8 

5.2

5.0 

5.0 

5.0 

5.0 

5.2

5.0 

5.0 

5.8 

5.2 

5.2

5.2 

5.8 

5.8 

5.5 

5.0

5.S 

7.2 

5.8 

5.2 

5.0

Run-off In 

acre-feet

266 

257 

56

-

2,860 

2,030 

607 

401 

322

'

a No gage-height record; discharge computed on basis of recorded range of stage and records for 

station near Viola, 

b Stage-discharge relation affected by ice.
GREEN RIVER BASIN 133

Labarge Creek near Viola, Wyo.

Location.- Water-stage recorder, lat. 420 13', long. 110°19', in sec. 19, T. 26 N., R. 113 

W., a quarter of a mile upstream from the narrows, 2& miles downstream from Spring 

Creek, 4& miles southeast of Viola, and 7 miles southwest of Labarge.

Drainage area.- 172 square milee.

Records available.- October 1940 to September 1941. April, to September 1913 and April 

1915 to September 1916 at site three-quarters of a mile downstream, published as 

Labarge Creek near Labarge, Wyo. April 1932 to August 1939 at site 7 miles downstream, 

published as Labarge Creek near Labarge, Wyo.; records not equivalent.

Extremes.- Maximum discharge during year, 302 second-feet June 9 (gage height, 5.00 feet), 

from rating curve extended above 220 second-feet; minimum daily, 23 second-feet Oct. 

17.

1913, 1915-16, 1940-41: Maximum daily discharge, 478 second-feet May 27, 1913; 

minimum daily, 4 second-feet July 5-14, 1915.

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

which are fair.

Cooperations.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

furnished by Bureau of Reclamation.

Discharge, In second-feet, water rear October 1940 tc September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

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 

25 

25

24 

24 

25 

25 

25

24 

24 

24 

24 

24

24 

23 

24 

24 

24

24 

30 

30 

28 

30

31 

33 

35 

32 

33 

34

Nov.

34 

34 

a35 

a36 

a29

aSO 

a31 

a33 

a35 

a39

a36 

a35 

a32

a33 

*36

35 

35 

36 

36 

35

34 

33 

32 

31 

34

36 

33 

35 

38 

41

Dec.

40 

40 

40 

40 

40

35 

43 

45 

945 

40

38 

36 

36 

37 

3S

40 

42 

44 

46 

47

46 

45 

44 

44 

43

42 

43 

45 

43 

41 

43

Jan.^

«44 

41 

42 

43 

43

42 

41 

43 

43 

43

43 

44 

45 

43 

42

41 

40 

42 

44 

45

47 

42 

43 

43 

44

45 

40 

42 

42 

41 

40

Feb.

40 

41 

42 

44 

45

45 

44 

41 

40 

42

45 

45 

*44 

43 

42

39 

3S 

39 

40 

43

45 

42 

40 

40 

36

32

31 

37

Month

bet

Not 

De<

C

Jar 

Pel 

Mai

Api 

Ma: 

Jui 

Jul 

Au{ 

Sei

7

alendar year

 ch . . . .

y. .....................................

Fater year 1940-4

Mar.

42 

42 

41 

32 

31

32 

32 

32 

32 

31

30 

31 

32 

32 

35

40 

46 

«51 

50 

51

51 

48 

50 

42 

38

37 

41 

41 

43 

44 

47

Apr.

54 

54 

51 

4S 

55

44 

40 

42 

48 

52

43 

48 

54 

54

53

64 

45 

35 

33 

34

32 

34

34 

S7 

41

43 

43 

51 

64

73

Secondfoot-days

S2S 

1,032 

1,291

_

1,323 

1,145 

1,227 

1,398 

5,060 

3,479 

1,513 

1,093 

1,241

20,630

May

76 

96

11i

117 

118

101 

88 

98 

115 

12S

154 

182 

20S 

244 

208

177 

186 

21S 

195 

156

144 

154 

169 

199 

206

220 

237 

228 

188 

175 

164

Maximum

35

41 

47

_

47 

45 

51 

73 

244 

240 

72 

50 

58

244

June

142 

132 

132 

132 

152

138 

140 

154 

240 

182

13S 

122 

122 

126

US

120 

106 

99 

94 

90

SS 

S4 

79 

79 

76

84 

82 

78 

76 

74

July

72 

70 

70 

67 

62

60

57 

60 

54

43

43 

47 

48 

54 

4S

45 

44 

43 

44 

48

42 

40 

40 

36 

42

4S 

43 

40 

32 

35 

36

Minimum

23 

29 

35

-

40 

 31 

30 

32 

76 

74 

32 

29 

28

23

Aug.

47 

42 

37 

33 

32

32 

36 

37 

32

33

50 

48 

45 

36 

32

33 

35 

36 

32 

31

31 

35 

36 

32

33

34 

33 

31 

29 

30 

30

Mean

26.7 

34.4 

41.6

-

42.7 

40.9 

39.6 

46.6 

163 

116 

48.8 

35.3 

41.4

56.5

Sept.

29 

28 

31 

36 

36

35 

36 

40 

41 

38

36 

34 

35 

35 

36

36 

36 

3S 

43 

41

42 

4S 

57 

54 

52

50 

55 

58 

54

51

Run- off In 

acre-feet

1,640 

2,050 

2,560

_

2,620 

2,270 

2,430 

2,770 

10,040 

6,900 

3,000 

2,170 

2,460

40,910

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records.

Note.- Stage-discharge relation affected by Ice Nov. 20 to Dec. 2, Dec. 10 to Feb. 20, Mar.
134 GREEN RIVER BASIN

Fontenelle Creek near Fontenelle, Wyo.

Location.- Water-stage recorder, lat. 42°06', long. 110°13', in sec. 3, T. 24 N., R. 113 

W., 6 miles west of Fontenelle.

Drainage area.- 224 square miles.

Records available.- May 1915 to September 1919, October 1931 to September 1941.

Average discharge.- 13 years (1916-19, 1931-41), 55.5 second-feet.

Extremes.- Maximum discharge during year, 228 second-feet June 9 (gage height, 2.24 feet), 

from rating curve extended above 150 second-feet; minimum daily, 1.3 second-feet Oct. 2-4.

1915-19, 1931-41: 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 period of ice effect, which are fair. Diversions 

above station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements for Oct. 1 to June 

30 furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

10 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1.6 

1.3 

1.3 

1.3 

4.0

5.5 

6.5 

8.0 

«8.5 

9.0

8.5 

9.0 

9.0 

9.6 

11

12 

14 

14 

14 

12

11 

12 

9.6 

7.0 

8.0

8.5 

13 

18 

20 

19 

17

HOT.

10 

19 

20 

20 

18

15 

18 

20 

20 

16

14 

12 

15 

17 

*19

20 

20 

20 

19 

17

14 

13 

13 

12 

14

15 

15 

16 

17 

16

Dec.

(*) 

17

Jan.

14 

(*)

Feb.

(*) 

12

Month

Oct 

Not 

Dec

C

Jan 

Fefc 

liar 

Apr 

Ma3 

Jur 

Jul 

Aug 

Sep

n

ua

TJSt ....................................

ater year 194O-C

Mar.

15 

(*)

Apr.

30 

35 

33 

34 

56

31 

32 

*52 

35 

42

41 

38 

46 

46 

48

63 

58 

44 

38 

35

35 

41 

54 

71 

80

80 

73 

92 

106 

110

Secondfoot -days

303.2 

503 

527

5,171.8

434 

336 

465 

1,539 

2,579 

1,827.1 

587.5 

913 

661

10,674.8

May

110 

106 

116 

114 

120

112 

91 

82 

82 

85

78 

83 

85 

98 

98

80 

54 

41 

44

45

41 

32 

29 

48 

71

91 

108 

126 

118 

1O4 

87

Maximum

20 

20

40

no

126 

173 

48 

85 

35

173

June

70 

55 

45 

45 

55

60 

64 

80 

140 

173

116 

108 

112 

98 

96

94 

78 

63 

52 

38

32 

32 

28 

25 

22

13 

7.5 

8.0 

8.0 

9.6

July

13 

20 

42 

48 

40

36 

2S 

24 

21 

18

13 

8.5 

7.0 

7.5 

7.0

7.0 

7.5 

7.5 

7.5 

11

18 

21 

20 

19 

20

26 

27 

20 

15 

14 

14

Minimum

1.3 

12

0

30 

29 

7.5 

7-0 

13 

13

1.3

Aug.

14 

14 

13 

13 

13

14 

15 

19 

21 

22

68 

64 

85 

52 

44

38 

34 

39 

38 

31

28 

25 

24 

23

24

27 

27 

24 

21 

20 

19

He an

9.78 

16.8 

17

14.1

14 

12 

15 

51.3 

83.2 

60.9 

19.0 

29.5 

22.0

29.2

Sept.

18 

18 

17 '14 

13

14 

17 

10 

20 

20

19 

18 

17 

18 

19

20 

10 

25 

25 

23

23 

25 

32 

35 

32

29 

28 

29 

29 

26

Run-off in 

acre-feet

601 

998 

1,050

10,260

861 

666 

922 

3,050 

5,120 

3,620 

1,170 

1,810 

1,310

21,180

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice HOT. 7 to Apr. 7.
OKEEN RIVER BASIN 135

Big Sandy Creek at Leckle 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 Leckle Ranch, half a mile downstream from Squaw Creek and 19 miles southeast of 

Big Sandy.

Drainage area.- 94 square miles.

Records available.- July 1910 to August 1911, July 1939 to September 1941.

Extremes.- Maximum discharge during year, 658 second-feet May 27 (gage .height, 5.63 feet), 

rrom rating curve extended above 560 second-feet; minimum not determined, probably 

occurred during period of Ice effect.

1910-11, 1939-41: Maximum discharge, that of May 27, 1941; minimum observed, 4.8 

second-feet Jan. 4, 1940 (discharge measurement), but probably less during period of 

Ice effect.

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

which are fair. Few diversions above station.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

rurnisnea by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

68 

60 

66 

60 

48

41 

37 

35 

31 

29

28 

26 

24 

25 

28

22 

21 

21 

20 

20

20 

20 

19 

19 

19

19 

22 

22 

30 

27 

25

HOT.

24 

24 

24 

*84 

25

30 

26 

24 

22 

IS

17 

17 

19 

«51 

82

21 

21 

20 

20 

19

IS 

18 

17 

16 

16

16 

16 

15 

15 

15

Dec.

(») 

14

Jan.

(*)

11

Feb.

(»)

11

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Ju3 

Au« 

Sei

t at?r year 1940-'

Mar.

15

Apr.

> 40

Secondfoot-days

952 

600 

434

15,566.9

341 

308 

465 

1,200 

10,223 

10,215 

3,147 

1,503 

1,194

30,587

May

80 

SO 

85 

95 

114

a!50 

a200 

a200 

a205 

a230

a270 

«338 

475 

499 

411

352 

379 

519 

375 

286

371 

471 

547 

503 

511

523 

596 

439 

367 

293 

264

Maximum

68 

30

292

596 

543 

IBS 

85 

56

596

June

283 

260 

303 

317 

375

300 

324 

359 

344 

341

310 

293 

391 

411 

403

431 

507 

543 

451 

415

415 

395 

379 

344 

317

260 

221 

193 

176 

154

July

146 

152 

152 

142 

132

127 

125 

119 

112 

108

101 

98 

91 

88 

81

76 

73 

70 

68 

66

62 

58 

56 

70 

159

188 

134 

98 

77 

63 

55

Minimum

19 

15

_

80 

154 

55 

29 

29

-

Aug.

47 

42 

37 

33 

29

39 

53 

58 

56 

56

84 

85 

77 

64 

56

55 

53 

48

46 

41

40 

40 

36 

36 

36

46 

48 

44 

39

37 

42

Mean

30.7 

20-0 

14.0

42.5

11.0 

11.0 

15.0 

40.0 

330 

340 

102 

48.5 

39.8

83.8

Sept.

41 

38 

36 

37 

36

32 

33 

36

41 

40

37 

35 

32 

32 

32

30 

29 

33 

56 

45

46 

51 

50 

50 

45

43 

45 

46 

45 

42

Run-off in 

acre-feet

1,890 

1,190 

861

30,870

676 

611 

922 

2,380 

20,290 

20,260 

6,240 

2,980 

2,370

60,670

* Winter discharge measurement made on this daya No gage-height record; discharge computed on basia of recorded range of atage and records for 

Qreen River at Warren Bridge, near Daniel.

Note.- Stage-discharge relation affected by ice Nor. 9 to Hay 4.
136 GREEN RIVER BASIN

Little Sandy Creek near Elkhorn, Wyo.

Location.- Water-stage recorder, lat. 42°32', long. 109°13', in see. 35, T. 30 N., R. 104 

w., 7 miles northeast of Elkhorn.

Drainage area.- 20.9 square miles.

Records available.- July 1939 to September 1941.

Extremes.- Maximum discharge during year, 196 second-feet June 18 (gage height, 3.90 feet); 

minimum not determined, probably occurred during period of ice effect.

1939-41: Maximum discharge recorded, that of June 18, 1941; minimum recorded, 0.9 

second-foot Jan. 4, 1940, but less during period of ice effect.

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

which are poor. Two small diversions above station.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

rumishea by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

5.0 

#4.4 

5.5 

5.5 

5.0

4.9 

5.0 

5.0 

5.2 

5.0

5.0 

4.9 

4.9 

5.0 

5.2

5.5 

5.0 

5.2 

5.2 

5.0

4.9 

5.0 

5.0 

5.2 

5.2

5.2 

5.2 

9.6 

8.4 

8.4 

6.0

Nov.

5.4 

5.4 

5.4 

#5.4 

4.5

5.4 

6.8 

5.5 

5.4 

5.3

5.0 

4.8 

4.6 

4.6 

4.9

5.2 

5.4 

5.5 

5.6 

5.4

5.2 

5.2 

5.0 

5.0 

5.2

5.3 

5.3 

5.2 

5.0 

4.9

Dec.

<*)

> 5.0

Jan.

(») 

' 2.0

Feb.

' 2.0

Month

Oct 

Non 

Dec

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jur 

Jul

Aug

Sep 

H ater year 1940-4

Mar.

 3.0 

(*)

Apr.

' 4.5

Secondfoot-days

169.5 

156.8 

155

4,015.1

62 

56 

93 

135 

1,517-7 

2,735 

754 

335.1 

438

6,607.1

May

7.0 

7.2 

7.6 

S.4 

9.5

11 

15 

18 

19 

20

30 

«40 

46 

37 

25

29 

42 

70 

71 

53

55 

75 

101 

104 

104

116 

123 

93 

74 

59 

48

Maximum

9.6 

6.8

92

123 

173 

43 

17 

16

173

June

. 43

39 

45 

56 

70

62 

66 

63 

70 

64

55 

53 

78 

112 

116

124 

145 

173 

152 

136

144 

140 

135 

122 

111

98 

82 

70 

61 

50

July

43 

39 

39 

39 

38

38 

35 

35 

35 

35

31 

31 

27 

24 

21

20 

18 

18 

18 

18

16 

15 

14 

14 

16

16 

16 

14 

11 

10 

10

Minimum

4.4 

4.5

-

7.0 

39 

10 

7.0 

13

-

Aug.

9.0 

8.0 

7.5 

7.0 

7.0

11 

13 

14 

13 

13

17 

17 

15 

13 

13

12 

12 

12 

11 

11

11 

10 

9.3 

8.4 

9.1

10 

9.1 

8.4 

S.I 

8.1 

8.1

Mean

5.47 

5.23 

5.0

11.0

2.0 

2.0 

3.0 

4.5 

49.0 

91.2 

24.3 

10.8 

14.6

18.1

Sept.

15 

15 

15 

15 

14

15 

16 

16 

16 

16

15 

15 

15 

14 

14

13 

13 

15 

16 

13

14 

13 

13 

14 

15

15 

16 

14 

14 

14

Run- off In 

acre-feet

336 

311 

307

7,970

123 

111 

184 

268 

3,010 

5,420 

1,500 

665 

869

13,100

# Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice NOT. 4-6, Nov. 9 to Hay 11. No gage-height record 

July 3O to Aug. 21; discharge computed on basis of recorded range in stage and records for Big Sandy 

Creek at Leckle ranch, near Big Sandy.
GREEN RIVER BASIN 

Blacks Fork near Millburne, Wyo.

137

Location.- Water-stage recorder, lat. 41°03', long. 110°34', in sec. 35, T. 13 N., R. 117

 W., 3 miles dovmstream from Little West Fork, 4i miles north of Utah-Wyoming State line,

and 15 miles southwest of Millburne. 

Drainage area.- 156 square miles. 

Records available.- July 1939 to September 1941. 

Extremes.- naxlmum discharge during year, 1,570 second-feet my 13 (gage height, 3.07 feet),

 from rating curve extended above 1,000 second-feet; minimum not determined, probably

occurred during period of ice effect.

1939-41: Maximum discharge, that of May 13, 1941; minimum, 17 second-feet Jan. 24,

1940 (discharge measurement), but probably less during period of ice effect.

Revisions.- The maximum discharge for the water year 1940 has been revised to 1,360

second-feet May 15, 1940 (gage height, 2.82 feet), superseding figure published in

Water-supply Paper 899. 

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

wnicn are poor. Revisions.- Revised figures of daily discharge, in second-feet, for the high-water period

 in water year 1940, superseding those published in Water-Supply Paper 899, are given 

herein:

Hay 8 

9

1011

12

13

14

15

16

440

544

692

853

932

940

860

948

1,000

May 17

18

19

20

21

22

23

24

25

916

797

734

678

678

615

657

664

May 26 755

27 755

28 636

29

30

31 

June 1

2

3

544

520

550

532

500

450

Month

Hay...................... 

June. ....................

Mater year 1939-40 .....

Beeona-rootr 

days

19,206 

8,146

39,724

Maximum

1,000 

532

1,000

Minimum

107 

117

-

Mean

620 

272

109

Acre-feet

38,090 

16,160

78,790

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

rurmsnea by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

131 

124 

120 

110 

105

95 

85 

SO 

110 

105

105 

110 

100 

90 

85

76 

74 

*70 

6S 

66

65 

63 

63 

62 

60

70 

70 

70 

57 

68 

55

Nov.

52 

57 

58 

52 

50

52 

56 

54 

46 

47

42 

40 

30 

32 

36

38 

40 

40 

36 

34

38 

36 

34 

34 

32

34 

*32 

30 

30 

32

Dec.

> 34

Jan.

(*)

30 

(«>

Feb.

22

(*)

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mai 

Api 

Maj 

Jut 

JuJ 

AUJ 

Sej

V

alendar year 194

y.. ....................................

ater year 1940-< JL

Mar.

' 28.5

Apr.

55

Secondfoot -days

2,612 

1,224 

1,054

41,707

930 

616 

883.5 

1,650 

20,304 

23,423 

9,783 

4,006 

2,055

68,540.5

May

130 

*138 

141 

176 

176

180 

169 

273 

384 

505

706 

996 

1,280 

1,150 

846

727 

S92 

964 

650 

608

622

S04 

1,040 

1,020 

1,020

1,080 

964 

769 

643 

615 

636

MaxlmtuB

131 

58

1,000

1,280 

1,200 

490 

212 

100

1,280

June

657 

713 

762 

825 

748

568 

594 

532 

538 

495

608 

699 

699 

720 

734

900 

1,120 

1,200 

1,060 

1,040

1,100 

1,060 

1,020 

1,080 

1,050

776 

664 

526 

475 

460

July

490 

416 

425 

435 

435

435 

412 

388 

376 

380

380 

348 

332 

325 

317

288 

277 

270 

325 

310

266 

252 

252 

255 

244

244 

230 

187 

172 

162 

155

Minimum

55 

30

-

130 

460 

155 

90 

51

-

Aug.

141 

131 

121 

110 

110

131 

148 

155 

183 

212

187 

144 

124 

110 

121

131 

127 

121 

100 

97

93 

114 

93 

97 

205

151 

114 

97 

90 

138 

110

Mean

84.3 

40.8 

34

114

30 

22 

28.5 

55 

655 

7S1 

316 

129 

68.5

188

Sept.

93 

86 

88 

100 

86

77 

77 

75 

72 

68

63

60 

62 

65 

62

58 

57 

55 

62 

52

51 

58 

66 

65 

72

75 

70 

63 

62 

55

Run-off in 

acre-feet

5,180 

2,430 

2,090

82,720

1,840 

1,220 

1,750 

3,270 

40,270 

46,460 

19,400 

7,950 

4,080

135,900

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nov. 5-7, Nov. 12 to 

lot. 3-17, Mar. 15 to May 1; discharge computed on baais of records fo

Mar. 14; no gage-height record 

>r Bear River near Evanston.
138 GREEN RIVER BASIN

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 2* miles north of Urle.

Drainage area.- 261 square miles.

Records available.- August 1913 to September 1924, October 1937 to September 1941.

Extremes.- Maximum discharge during year, 1,170 second-feet May 14 (gage height, 5.67 

reet), from rating curve extended above 650 second-feet: minimum dally, 4.0 second-foot 

Oct. 3.

1913-24, 1937-41: Maximum discharge, 2,680 second-feet June 20, 1917 (gage height, 

4.72 feet, site and datum then in use); minimum dally, 0.2 second-feet Sept. 2, 3, 1939.

Remarks.- Records fair. Diversions above station for Irrigation.

Cooperation.- Results of discharge measurements Oct. 1 to June 30 furnished by Bureau of 

Keciamation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

6.6 

5.9 

4.0 

6.6 

6.2

6.2 

7.0 

7.5 

9.7 

12

13 

12 

8.S 

S.4 

9.7

9.7 

9.7 

9.7 

«8.S 

S.4

9.2 

7.5 

7-9 

S.4 

8.4

S.4 

12 

9.7 

8.4 

8.4 

7.5

Nov.

7.5 

7.5 

11 

12 

11

19 

34 

34 

35 

27

34 

25 

27 

29 

33

33 

32 

33 

42 

45

41 

40 

34 

29 

2S

31 

30 

*33 

36 

3S

Dec.

40 

31 

32 

32 

36

35 

34 

34 

31 

34

22 

21 

19 

19 

19

20 

21 

23 

23 

24

25 

24 

24 

26 

27

27 

27 

26 

26 

27 

26

Jan.

25 

23 

«20 

20 

21

22 

24 

26 

27 

27

27 

26 

26 

25 

25

25 

26 

26 

27 

27

27 

27 

26 

26 

26

27 

27 

27 

28 

*28 

26

Feb.

25 

24 

24 

25 

26

24 

24 

25

26 

29

29 

27 

26 

26 

27

26 

27 

28 

29 

26

25

2S 

36 

41 

31

«27 

28 

30

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Jvd 

Aug 

Sej

VI

alendaz* year 19/0......................

ater year 1940-4

Mar.

35 

32 

29 

28 

28

30 

28 

29 

30 

28

27 

28 

35 

31 

2S

37 

43 

65 

67 

51

55

45 

46 

41 

37

35

40 

47 

41 

34 

31

Apr.

29

26 

28 

29 

33

29

27 

28 

#26 

33

35 

33 

33 

29 

27

. 31 

28 

26 

28 

25

20 

18 

18 

19 

IS

20 

32 

36 

38 

40

Secondfoot-days

265.7 

S71.0 

S35

6,745.4

790 

769 

1,161 

842 

7,S74 

7,151 

1,069 

503 

441

22,571.7

May

48 

36 

2S 

30 

32

30 

30 

28 

57 

101

192 

440 

822 

917 

588

279 

228 

352 

261 

205

222 

190 

318 

402 

405

426 

492 

279 

182 

138 

116

Maximum

13 

45 

40

310

28 

41 

67 

40 

917 

612 

56 

27 

22

917

June

119 

119 

76 

98 

134

105 

99 

161 

225 

165

98 

130 

165 

132 

130

170 

346 

612 

612 

472

452 

440 

422 

402 

512

342 

192 

124 

56 

41

July

48 

56 

50 

49 

47

40 

40 

40 

36 

33

32 

41 

45 

56 

39

33 

28 

26, 

25 

32

29

25 

22 

25 

30

35

27 

26 

20 

18 

16

Minimum

4.0 

7.5 

19

.4

20 

24 

27 

IS 

2S 

41 

16 

11 

11

4.0

Aug.

14 

14 

14 

12 

14

15 

16 

18 

20 

24

27 

25 

19 

17 

17

17 

16 

16 

16 

15

14 

14 

15 

14 

16

IS 

17 

13 

12 

11 

13

Mean

S.57 

29.0 

26.9

18.4

25.5 

27.5 

37.5 

28.1 

254 

238 

34.5 

16.2 

14.7

61.8

Sept.

12 

12 

12 

16 

19

20 

17 

18 

17 

16

15 

14 

14 

14 

14

14 

12 

12 

12 

11

19 

16 

22 

16 

14

14 

14 

14 

14 

14

Run- off In 

acre-feet

527 

1,730 

1,660

13,390

1,570 

1,530 

2,300 

1,670 

15,620 

14.180 

2,120 

998 

875

44,780

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affec ->.l by Ice Nov. 12, 13, 24-30, Dec. 6, Dec. 12 to Feb. 20, 

FeU. 25-2S, Mar. 3-15.
GREEN RIVER BASIN 139

East Fork of Smith Fork near Robertson, Wyo.

Location.- Water-stage recorder, lat. 4L°03', Long. L10°24', on west line of sec. 4, T.

 12 N., R. 115 W., 1 mile upstream from Gilbert Creek and 11 miles southeast of 

Robertson.

Drainage area.- 59.0 square miles.

Records available.- July 1939 to September 1941.

Extremes.- Maximum discharge during year, 472 second-feet June 18 (gage height, 2.76

 feet), from rating curve extended above 370 second-feet; minimum recorded, 3.9 secondfeet Jan. 3 (discharge measurement), but may have been less at some other time during 

period of Ice effect. 1939-41: Maximum discharge, that of June 18, 1941; minimum, 3.0 second-feet Jan. 

23, 1940 (discharge measurement), but nay 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. No diversions above station.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to June 30 

furnished by Bureau of Reclamation.

Discharge, In seeond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

39 

36 

36 

32 

31

27 

25 

24 

30 

26

29 

30 

27 

24 

25

21 

20 

*20 

19 

19

19 

16 

18 

17 

17

17 

19 

19 

IS 

22 

18

Nov.

19 

19 

18 

16 

18

17 

19 

17 

16

15

14 

13 

12 

13 

13

14 

14 

14 

13 

13

14 

14 

13 

13 

12

13 

12

12 

12 

13

Dec.

(*) 

> 9.5

Jan.

(*) 

 6.0

(»)

Feb.

> 6.0 

(*)

Month

Oct 

No\ 

Dec

C

Jar 

Fel 

Max 

Api 

Ma3 

Jur 

Ju] 

Aug 

So;

H

alendar year 1940 ...............

Tater year 1940-41

Mar.

> 7.2

Apr.

(*) 

> 12.0

Secondfoot-daya

746 

435 

294.5

10,584.5

166 

16S 

223.2 

360 

6,097 

7,297 

2,656 

1,342 

765

20,569.7

May

*20 

a25 

a28 

a30 

a34

37 

42 

56 

79 

112

162 

254 

360 

3S4 

2SS

205 

223 

299 

190 

170

190 

229 

332 

360 

3SO

400 

336 

254 

202 

199 

217

Maximum

39 

19

301

400 

400 

136 

64 

41

400

June

226 

232 

260 

302 

241

184 

1S2 

173 

176 

157

179 

217 

214 

217 

211

288 

316 

400 

332 

320

340 

320 

316 

316 

336

254 

202 

152 

124 

110

July

131 

124 

100 

100 

10S

106 

106 

98 

94 

94

100 

9S 

85 

79 

79

74 

68 

66 

90 

136

96 

78 

71 

72 

71

72 

6S 

4S 

50 

48 

46

Minimum

17 

12

-

20 

110 

46 

31 

17

~

Aug.

43 

40 

40 

39 

39

42 

51 

60 

50 

5S

60 

45 

39 

35 

36

39 

38 

37 

32 

31

32 

45 

36 

36 

64

60 

42 

37 

32 

57 

47

Hear.

24.1 

14.5 

9.5

2S.9

6.0 

6.0 

7.2 

12.0 

197 

243 

85.7 

43.3 

25.5

56.4

Sept.

41

34 

32 

34 

32

27 

26 

25 

24 

22

21 

19 

19 

20 

19

IS 

17 

17 

23 

19

20 

22 

25 

27 

33

3S 

32 

28 

27 

24

Run- off In 

acre-feet

1,4SO 

863 

584

20,990

369 

333 

443 

714 

12,090 

14,470 

5,270 

2,660 

1,520

40,800

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records.

Mote.- Stage-discharge relation affected by lee Nov. 10 to Apr. 30.

461676 O-42-10
140 GREEN RIVER BASIN

West Fork of Smith Fork near Robertson, Wyo.

Location.- Water-stage recorder, lat. 41°01', long. 110°29', In sec. 15, T. 12 N., R. 

lie 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 1941.

Extremes.- Maximum discharge during year, 465 second-feet May 13 (gage height, 2.60 feet), 

from rating curve extended above 190 second-feet; minimum, 0.2 second-foot Feb. 25 

(discharge measurement), probably less at some other time during winter.

1939-41: Maximum discharge, that of May 13, 1941; minimum, 0.2 second-foot Aug. 

13, 1940, and Feb. 25, 1941 (discharge measurement), probably less during winter.

Revisions; The maximum discharge for the water year 1940 has been revised to 363 

secona-reet nay 11, 1940 (gage height, 2.37 feet), from rating curve extended above 

190 second-feet.

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

which are fair. No diversions above station.

Cooperation.- Gage-height records and results of discharge measurements Oct. 1, 1939, to 

June so, 1940, furnished by Bureau of Reclamation.

Revisions.- Revised figures of discharge for the water year 1940, superseding those publisnea In Water-Supply Paper 899, are given herein.

Discharge, in second-feet, 1939-41 

1939-40

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

SO

31

Dot.

2.2

2.4

2.4

2.7

2.3

2.7

2.2

2.3

3.2

2.4

2.4

2.4

2.2

2.0

1.8

l.S

1.5

1.5

1.4

1.5

1.5

1.5

1.5

1.5

1.5

2.1

1.6

1.5

2.1

l.S

2.1

NOT.

2.1

2.1

1.7

2.1

2.1

2.1

2.1

2.1

1.8

*1.6

1.2

1.3

1.2

1.2

1.8

1.3

1.0

.9

.8

.9

.9

1.0

1.5

1.3

1.1

1.0

1.0

1.1

1.1

.9

-

D«o.

*

Jan. Feb. Mar. Apr.

2.5

2.S

2.8

2.6

2.5

2.5

2.8

2.5

2.5

2.6

2.S

3.0

*3.0

3.4

4.0

5.6

7.0

8.0

15

*28

27

*26

35

35

37

41

35

32

24

20

-

K«y

24

36

70

103

7S

63

S3

139

206

222

248

246

238

198

208

176

132

97

75

63

61

58

56

54

44

59

72

54

44

39

*37

June

34

31

28

25

25

22

19

22

19

16

14

14

12

12

11

9.4

8.6

8.2

7.0

6.5

6.3

6.0

5.8

5.1

4.4

4.2

3.9

3.7

3.3

4.6

-

July

6.0

4.S

3.9

3.2

2.6

2.2

2.1

1.8

1.5

1.5

1.7

1.8

1.5

1.3

1.5

2.8

3.5

3.3

3.0

l.S

1.2

1.0

1.0

1.0

.6

.5

.5

.5

.5

.7

.8

Aug.

0.6

.5

.4

.4

.4

.4

.5

.4

.4

.4

.3

.3

.2

.3

.3

.3

.3

.4

.4

.5

.6

.7

1.0

1.3

8.2

2.3

1.1

.7

.5

.5

.4

Sept.

0.4

.5

1.0

8.0

1.8

1.1

.9

.8

.S

1.0

1.0

1.3

1.3

1.0

1.0

.9

.8

.9

1.2

3.0

2.4

1.7

1.3

1.2

1.5

2.2

1.5

4.2

4.8

4.4

-

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affeoted by Ice Hov. 11-15, 22-25, Apr. 1-22.
GREEN RIVER BASIN 141

Discharge, in second-feet, of West Fork of Smith Fork nsar Roberteon, Wyo., 1939-41 Continued

1940-41

Day Apr. July Aug. Sept.

3.5 

2.6 

3.0 

3.0 

3.0

2.3 

2.1 

2.3 

5.8 

4.8

4.8 

5.1 

4.2 

3.5 

3.0

2.7 

2.6 

2.4 

2.3 

2.3

2.3 

2.2 

2.2

2.2

2.3

3.3 

4.4 

3.3 

2.7 

3.3 

3.0

3.2 

3.0 

2.7 

3.3 

3.2

3.2 

3.0 

3.0 

3.9 

3.0

3.2 

3.0 

2.7 

2.4 

2.4

2.6 

2.6 

2.6 

3.0 

2.7

2.7 

2.7

2.6

2.7 

a2.8

a2.9

«3.0

2.9

2.8

2.8

(*)

(*)16 

20 

22 

24 

30

33

40

72

97

129

191

283

332

254 

191'

202

263

198

176

168

222

246

242

238

198

187

168

136

119

113

106

103

94

94

100

103

97

110

119

122

129

179

218

191

164

132

129

129

126

110

97

92

80

72

76

78

69

70

36

26

26

29

25

20

18

16

16

16

14

12

12

12

14

12

14

16

11

9.4

9.0

12

14

8.6 

6.8

8.2

16

13

13

12

7.0

6.8

6.3

6.6

4.8 

4.1 

3.3 

3.3

3.9

4.8

8.6

12

11

16

16

9.8

6.3

6.6

6.0

6.0 

6.8 

6.8 

5.1 

4.8

4.8

5.6

4.8

5.3

11

7.8 

5.1 

4.1 

3.3 

5.3 

4.4

3.7 

3.2 

3.7

4.6 

4.1

3.3 

3.5 

3.5 

3.3 

3.0

2.3 

2.2 

2.4 

2.8 

2.8

2.4 

2.3

2.3

2.4

2.1

2.2 

3.7 

4.4 

3.9 

4.8

4.6 

4.6 

3.9 

3.9 

3.2

* 'Tinter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of weather records.

Hote.- Stage-discharge relation affected by Ice HOT. 28 to May 5.

Monthly discharge. In second-feet, 1939-41

Month Secondfoot-days Run-off In 

acrs-feet

October 1939 ............................. 62.0

November.................................. 41.6

December...............................

Calendar year ..................

January 1940 ..........................

February...............................

March..................................

April..................................... 417.9

Hay....................................... 3,271

June...................................... 391.0

July...................................... 60.1

August.................................... 19.0

September................................. 47.9

Water year ..................

October 1940 .............................. 96.5

Uovember.................................. 86.6

December.................................. 86.8

Calendar year ...................

January 1941 ............................. 62

February.................................. 19.6

Harch..................................... 37.2

April..................................... 126

May....................................... 4,720

June...................................... 3,149

July...................................... 401.7

August.................................... 206.6

September................................. 99.1

Water ysar 1940-41 ..................... 9,091.0

3.2

2.1

41

246

34

6.0

2.3

4.8

5.8 

3.9

332 

218

29

16 

4.£

1.4 

.8

2.00

1.39

2.5 

24

3.3 

.5 

.2 

.4

13.9

106

13.0

1.94

.61

1.60

2.1 

2.4

3.11

2.89

2.8

IS 

86 .

5.!

3.!

2.1

2.0

.7

1.8

4.8

158

105

13.0 6.6«

3.90

332 24.9

123

83

829

6,490

776

119

38

95

191

172

172

1E3

39

74

250

9,360

6,850

797

410

197

18,040
142 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., 200 feet north of Wyoming-Utah State line and LInwood. Datum of gage Is 5,992.57 

feet above mean sea level, adjustment of 1912.

Drainage area.- 531 square miles.

Records available.- October 1928 to September 1941.

Average discharge.- 13 years, 73.3 second-feet.

Extremes.- Maximum discharge during year, 677 second-feet May 26 (gage height, 3.90 feet); 

minimum daily, 5.0 second-feet Oct. 8.

1928-41: Maximum discharge, 6,750 second-feet Aug. 3, 1936 (gage height, 7.19 

feet, from floodmarks), by slope-area method; no flow several days In 1934, 1935, 1939, 

and 1940.

Remarks.- Records good except those for period of ice effect, which are fair. Diversions 

above station for irrigation.

Discharge, In aeoond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

30 

31

Oct.

20 

11 

7.6 

7.2 

6.9

6.1 

5.7 

5.0 

6.1 

14

14 

9.5 

9.5 

9.5 

9.5

9.5 

10 

14 

17 

19

19 

19 

20 

22 

22

25 

30 

35 

32 

32 

40

Nov.

48 

50 

50 

50 

43

40 

46 

53 

53 

48

34 

*34 

26 

25 

30

34 

34 

34 

34 

33

32 

34 

31 

32 

30

28 

27 

28 

31 

36

Dec.

36 

35 

35 

34 

34

34 

34 

33 

33 

31

30 

2S 

25 

24 

23

25 

28 

31 

28 

26

26 

27 

30 

34 

30

28 

29 

31 

32 

34 

32

Jan.

2S 

29 

26 

26 

27

27 

28 

29 

30 

31

32 

32 

32 

32 

31

29 

29 

30 

31 

30

32 

31 

*31 

32 

33

33 

32 

31 

31 

33 

35

Feb.

36 

32 

30 

30 

31

32 

30 

31 

33 

36

39 

41 

40 

41 

40

40 

*39 

40 

42 

44

45 

45 

47 

48 

49

47 

47 

50

Month

Oct 

No\

Dec

C

Jar 

Pel 

Mat 

Api 

Ma, 

Jur 

Ju3 

Auj 

Sei

H

alendar year 194 0..... .................

ruarv

ater year 1940-4

liar.

55 

61 

55 

58 

59

5S 

57 

56 

54 

4S

48 

53 

46 

48 

49

51 

*55 

68 

80 

89

84 

81 

83 

85 

82

57 

42 

52 

53 

48 

46

Apr.

55 

57 

59 

61 

76

59 

45 

57 

48 

46

53 

53 

62 

52 

43

46 

38 

24 

25 

28

*28 

26 

27 

2S 

34

37 

45 

45 

55 

45

Secondfoot-days

507.1 

1,108 

940

11,818.2

943 

1,105 

1,861 

1,356 

7,738 

11,297 

4,549 

3,121 

2,533

37,058.1

May

42 

40 

32 

28 

28

19 

24 

18 

16 

13

12 

18 

7S 

262 

393

361 

29S 

373 

319 

440

476 

364 

402 

466 

527

588 

584 

472 

392 

349 

304

Maximum

40 

53 

36

299

35 

50 

89 

76 

5SS 

546 

269 

221 

141

58S

June

301 

280 

269 

310 

399

328 

301 

331 

546 

472

319 

310 

32S 

340 

376

444 

495 

520 

524 

408

421 

424 

424 

440 

492

421 

328 

272 

244 

230

July

255 

269 

216 

199 

ISO

162 

160 

202 

144 

118

111 

128 

123 

165 

154

139 

113 

106 

101 

134

136 

101 

86 

78 

106

216 

213 

157 

113 

92 

72

Minimum

5.0 

25 

23

0

26 

30 

42 

24 

12 

230 

72 

26 

53

5.0

Aug.

S2 

71 

3S 

31 

26

26 

31 

52 

63 

19 S

1S6 

12S 

106 

90 

7S

94 

199 

221 

134 

104

90 

88 

94 

104 

108

121 

131 

123 

106 

94 

104

Mean

16.4 

36.9 

30.3

32.3

30.4 

39.5 

60.0 

45.2 

250 

377 

147 

101 

84.4

102

Sept.

94 

88 

86 

90 

SS

S8 

S2 

78 

S6 

S2

74 

63 

58 

63 

66

63 

58 

53 

53 

56

53 

69 

116 

141 

136

116 

111 

118 

106 

99

Run-off In 

acre-feet

1,010 

2,200 

1,860

23, 450

1,870 

2,190 

3,690 

2,690 

15,350 

22,410 

9,020 

6,190 

5,020

73,500

Peak discharge.- May 26 (8:30 p.m.) 677 see.-ft.; Aug. 10 (10 p.m.) 568 sec.-ft. j Aug. 17 (1p.m.) 

520 sec.-ft.

* Winter discharge measurement made on this day. 

Note.- Stage-discharge relation affected by ice Nov. 13 to Mar. 26.
GREEN RIVER BASIN 143

Burnt Fork at Burntfork, Wyo.

Location.- Chain gage, lat. 41°02', long. 110 001', in sec. 11, T. 12 N., R. 112 W., a 

quarter of a mile west of Burntfork and 1 mile upstream from mouth. Datum of gage is 

7,098.70 feet above mean sea level, adjustment of 1912.

Drainage area.- 73 square miles.

Records available.- July 1929 to September 1941.

Average discharge.- 12 years, 8.98 second-feet.

Extremes.- Maximum discharge observed during year, 128 second-feet June 18 (gage height, 

3.50 feet); minimum daily, 0.6 second-foot Oct. 5, 6.

1929-41: Maximum discharge, 4,360 second-feet Aug. 2, 1936 (gage height, 9.60 

feet, from floodmarks), by slope-area method; no flow June 27, 30, July 2, 5-7, 17, 

18, 25, 1934.

Remarks.- Records fair. Gage read twice daily. Diversions above station for irrigation.

Discharge! In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

0.8 

.8 

1.0 

1.1 

.6

.6 

.7 

.9 

1.2 

1.4

1.6 

 1.7 

1.6 

2.0 

2.0

2.2 

2.3 

2.2 

2.4 

2.4

2.3 

2.3 

2.1 

2.3 

2.7

3.5 

4.3 

3.8 

4.0 

4.7 

4.7

Nov.

4.5 

4.3 

4.2 

3.S 

3.2

4.2 

4.5 

4.3 

4.5 

4.0

4.2 

3.6 

*3.4 

3.6 

4.3

4.7 

5.2 

4.6 

4.2 

4.4

4.5 

3.5 

3.1 

3.1 

3.2

3.4 

3.6 

3.6 

4.2 

4.6

Dec.

4.7 

4.8 

5.2 

5.4 

5.6

5.5 

5.6 

6.0 

5.6 

5.CT

4.6 

4.3 

4.3 

4.2 

4.3

4.4 

4.6 

4.7 

4.6 

5.0

5.1 

4.8 

4.7 

4.9 

5.2

5.0 

4.9 

5.1 

5.0 

5.2 

4.6

 Tan.

4.0 

3.6 

3.6 

3.7 

4.0

3.9 

4.2 

4.2 

4.4 

4.5

4.2 

4.4 

4.3 

4.4 

4.6

5.0 

5.4 

5.6 

5.4 

5.4

5.5 

5.5 

*5.4 

5.2 

5.0

4.S 

5.2 

5.0 

5.3 

5.0 

5.2

Feb.

5.2

5.0 

4.8 

4.S 

4.9

4.S 

4.7 

4.7 

5.2 

5.7

5.5 

5.5 

5.4 

5.2 

4.8

4.8 

*5.2 

5.4 

5.4 

5.2

5.4 

5.2 

5.4 

5.2 

4.8

4.6 

4.5 

5.0

Month

Oct 

No\ 

Dec

C

Jan 

Fet 

Hai 

Apr 

Ha5 

Jui 

Jul 

Auf 

8ei

1

alendar year 1940.. ....................

ater year 1940-4

Mar.

5.4

5>0 

5.0 

5.2 

5.2

. 4.8 

5.2 

4.8 

4.6 

4.5

4.6 

4.6 

4.9 

5.0 

*6.6

5.0 

4.8 

5.7 

5.2 

4.5

3.2 

2.6 

2.9 

2.9 

2.4

2.9 

2.4 

3.4 

3.0 

2.4 

2.3

Apr.

1.2 

1.2 

1.2 

1.1 

1.2

1.2

1.1 

1.2 

1.0

l.S

1.5 

1.6 

1.5 

1.5 

1.9

1.9 

1.7 

1.4 

l.S 

2.3

2.2 

2.4 

2.2 

2.2 

1.8

1.4 

1.3 

1.2 

.9 

.9

Secondfoot-days

66.4 

121.0 

153.5

955.6

146.1 

142.3 

131.2 

46.0 

725.8 

1,479 

229.6 

445.4 

396.6

4,082.9

Bay

0.9 

.9

.S 

.9 

1.0

1.0 

.9 

.9 

l.S 

1.3

1.5 

1.9 

50 

49 

31

17 

13 

32 

22 

21

24 

31 

36 

56 

74

70 

67 

40 

34 

21 

22

Maximum

4.7 

5.2 

6.0

16

5.S 

5.7 

6.6 

2.4 

74 

116 

15 

2S 

25

116

June

21 

15 

15 

30 

37

21 

30 

22 

29 

29

23

30 

33 

45 

55

65 

81 

116 

98 

88

92 

93 

77 

84 

105

60 

37 

22 

14 

12

July

9.S 

8.5 

11 

10 

9.8

10 

9.1 

15 

8.3 

7.7

7.7 

6.6 

6.6 

6.2 

6.4

5.7 

4.3 

4.2 

4.3 

4.7

4.2 

3.5 

3.7 

3.7 

4.2

7.1 

10 

11 

9.3 

8.7 

S.3

Minimum

0.6 

3.1 

4.2

.2

3.6 

4.5 

2.3 

.9 

.6 

12 

3.5 

5.2 

8.1

.6

Aug.

8.1 

7.3 

5.2 

5.7 

5.2

5.2 

7.7 

11 

14 

21

24 

20 

IS 

17 

15

15 

19 

IS 

14 

13

12 

16 

15 

14 

20

28 

19 

16 

14 

14 

14

Mean

2.14 

4.03 

4.95

2.61

4.71 

5. OS 

4.23 

1.53 

23.4 

49.3 

7.41 

14.4 

13.2

11.2

Sept.

12 

10 

11 

12 

13

10 

10 

13 

14 

12

11 

10 

10 

10 

10

9.3 

S.5 

S.I 

9.3 

8.3

6.1 

12 

14 

17 

20

24 

25 

22 

22 

21

Run-off In 

acre-feet

132 

240

304

1,900

290 

262 

260 

91 

1,440 

2,930 

455 

883 

767

6,090

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice HOT. 12 to Jan. 23, Jan. 26-30, Feb. 2-9, 26-28, 

Mar. 8-13.
144 GREEN RIVER BASIN

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., at 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.

Drainage area.- 604 square miles.

Records available.- May 1904 to October 1906 and October 1909 to September 1926 (monthly 

discharge onlyj, and October 1933 to September 1941 In reports of U. S. Geological 

Survey. May 1904 to October 1906 and March 1910 to September 1941 In reports of State 

engineer.

Average discharge.- 34 years, 490 second-feet.

Extremes.- Maximum discharge during year, 3,770 second-feet May 14 (gage height, 5.32 

reet;; minimum dally,-48 second-feet Dec. 16.

1904-6, 1909-41: Maximum discharge, 6,820 second-feet June 14, 1921 (g&ge height, 

7.08 feet); minimum dally, 4 second-feet Sept. 8, 1934.

Remarks.- Records excellent except those below 350 second-feet, which are good. Dlverslons above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22

83 

84 

25

86 

27 

28 

29 

30 

31

Oct.

188 

174 

157 

135 

167

198 

176 

157 

176 

224

1S8 

168 

138 

182 

117

107 

108 

88 

84 

SI

79 

77 

74 

74 

78

72 

84 

88 

86 

88 

90

NOT.

88 

81 

90 

95 

77

84 

122 

114 

112 

112

66 

79 

81 

«110 

110

93 

97 

104 

100 

93

86 

79 

72 

65 

54

65 

70 

63 

74 

74

DeCt

74 

74 

70 

63 

63

66 

68 

58 

63 

65

65 

58 

b58 

b56 

54

4S 

68 

81 

93 

84

77 

78 

72 

79 

77

97 

97 

*88 

93 

95 

100

Jan.

blOO 

b93 

b87 

b83 

b79

72 

81 

74 

84 

S4

88

74 

77 

84 

79

81 

84 

84 

93 

84

77 

74 

79 

95 

81

90 

»86 

U86 

b83 

81 

84

Feb.

93 

b89 

bS8 

b86 

b80

b75 

b70 

b67 

63 

63

70 

77 

79 

81 

84

81 

81 

79 

78 

74

81 

S8 

93 

100 

«102

107 

112 

81

Month

Oct 

Hoi

Dec

C

Jar 

Fet 

Mai 

AP' 

Maj 

Jur 

Jul 

Aug 

Set

n

ust.... ................................

ater year 1940-4

liar.

72 

86 

107 

114 

110

102 

114 

112 

100 

107

95 

114 

SI 

79 

97

100 

90 

107 

140 

195

856 

246 

289 

253 

814

179 

192 

228 

281 

a320 

361

Apr.

406 

334 

297 

293 

356

392 

289 

253 

2S5 

356

415 

586 

697 

471 

428

451 

471 

370 

309 

278

317 

410 

468 

515 

548

603 

649 

703 

883 

856

Secondfoot-daya

3,809 

8,630 

2,278

131,680

2.581 

2,316 

4,941 

13,649 

70, 887 

35, 183 

6,957 

4,797 

2,683

158,651

May

987 

1,030 

1,410 

2,140 

2,330

1,680 

1,270 

1,150 

1,490 

1,930

8,390 

8,650 

3,160 

3,640 

3,440

2,740 

2,780 

2,910 

2,660 

2,120

2,180 

8,430 

2,590 

2,660 

2,760

2,710 

2,670 

2,430 

2,860 

2,160 

2,110

Maximum

224 

122

100

2,620

100 

118 

361 

856 

3,640 

2,030 

548 

249 

143

3,640

June

2,030 

1,980 

1,840 

1,750 

1,700

1,600 

1,570 

1,540 

1,350 

1,520

1,490 

1,240 

1,300 

1,260 

1,260

1,350 

1,300 

1,200 

1,070 

934

842 

764 

679 

643 

771

570 

460 

424 

361 

325

July

301 

330 

281 

249 

228

808 

188 

1S2 

171 

176

168 

176 

801 

218 

a815

a200 

al95 

a!91 

188 

548

366 

260 

811 

168 

179

185 

811 

811 

185 

182 

165

Minimum

72 

54 

48

14

72 

63 

72 

253 

987 

385 

165 

112 

58

48

Aug.

157 

151 

138 

127 

120

Igg

127 

146 

132 

130

162 

179 

218 

157 

130

146 

214. 

249 

211 

179

171 

162 

162 

176 

162

151 

143 

124 

122 

117 

112

He an

123 

87.7 

73.5

360

83.3 

82.7 

159 

455 

2,287 

1,171 

884 

155 

89.4

418

Sept.

100 

95 

93 

90 

84

72 

70 

SI 

93 

90

81 

68 

58 

143 

130

110 

95 

88 

a84 

a80

a75 

a71 

65 

SI 

108

110 

100 

93 

86 

95

Run-off In 

acre-feet

7,560 

5,220 

4,520

261,200

5.120 

4,590 

9,800 

27,070 

140,600 

69,670 

13,800 

9,510 

5,320

302,600

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for Elk River at Clark, Colo.

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 

Yampa River near Maybell, Colo.

145

Location.- Water-stage recorder, lat. 40°30', long. 108°02', In sec. 2, T. 6 N., R. 95 W.,

 S miles east of Maybell. Datum of gage Is 5,899.25 feet above mean sea level, 

unadjusted.

Drainage area.- 3,410 square miles.

Records available.- April 1904 to October 1905, June 1910 to November 1912, April 1916 to

 September 1917, and October 1917 to September 1926 (monthly discharge), and October 

1933 to September 1941 In reports of U. S. Geological Survey. April 1916 to September 

1941 In reports of State engineer.

Average discharge.- 25 years (1916-41), 1,652 second-feet.

Extremes.- Maximum discharge during year, 11,700 second-feet May 15 .(gage height, 8.50 

feet); minimum dally, 122 second-feet Dec. 13.

1904-5, 1910-12, 1916-41: 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 dally, 2 second-feet July 17-19, 

1934.

Remarks.- Records excellent except those for period of Ice effect, which are fair. Dlversions above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

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.

250 

31S 

358 

334 

460

388 

412 

484 

460 

442

526 

587 

508 

436 

382

346 

324 

302 

285 

265

250 

240 

235 

228 

221

224 

265 

280 

285 

290 

296

HOT.

302 

302 

290 

312 

334

334 

296 

* 296 

352 

388

376 

352 

200 

255 

275

228 

280 

340 

*352 

382

334 

255 

388 

265 

296

250 

307 

275 

370 

376

Dec.

296

SIS 

334 

318 

2S5

312 

312 

280 

307 

296

235 

214 

122 

135 

140

150 

170 

220 

275 

265

250 

245 

250 

265 

260

*235 

240 

232 

240 

250 

250

Jan.

260 

228 

194 

172 

170

16S 

175 

1S6 

194 

207

210 

*207 

21S 

221 

224

235 

240 

245 

255 

260

260 

250 

245 

235 

22S

-228 

224 

22S 

*224 

235 

240

Feb.

245 

21S 

235 

235 

1S6

180 

180 

183 

214 

»200

200 

224 

352 

290 

290

346

364 

346 

364 

340

340 

394 

382 

418 

412

358 

388 

394

Month

Oct 

Vet 

Dec

C

Jar 

Pel 

Hai 

Apr 

Ha] 

Jur 

Ju3 

Aug 

Sei

»

alendar year 1940 ......................

y......................................

rater year 1940-4

Mar.

448 

538 

594 

657 

580

*466 

442 

436 

424 

340

352 

250 

376 

358 

275

307 

307 

382 

948 

1,210

622 

608 

940 

1,150 

1,050

888 

776 

699 

880 

1,130 

1,180

Apr.

1,190 

1,490 

1,290 

1,210 

1,270

1,430 

1,410 

1,210 

1,170 

1,140

1,260 

1,290 

1,480 

2,260 

1,810

1,570 

1,520 

1,530 

1,370 

1,160

1,020 

999 

1,160 

1,470 

1,810

1,020 

2,340 

2,640 

2,760 

3,100

Secondfoot-days

10,681 

9,362 

7,701

433,036

6,866 

6,278 

19,813 

46,379 

227,490 

121,090 

25,148 

10,520 

5,743

499,071

May

3,300 

3,540 

4,060 

5,240 

8,480

9,130 

6,740 

5,300 

4,940 

6,420

7,710 

8,900 

9,330 

10,700 

11,500

10,900 

8,780 

8,100 

8,660 

8,460

6,720 

6,180 

6,760 

7,160 

7,440

7,560 

7,710 

8,130 

7,400 

6,380 

5,860

Maximum

587 

388 

334

8,850

260 

418 

1,210 

3,100 

11,500 

5,760 

1,650 

664 

302

11,500

June

5,760 

5,560 

5,360 

5,060 

4,940

5,140 

4,880 

4,580 

4,980 

4,360

4,450 

4,490 

3,770 

3,590 

3,520

3,700 

3,890 

4,130 

4,310 

4,250

4,060 

3,820 

3,540 

3,320 

3,050

3,080 

2,860 

2,450 

2,240 

1,950

July

1,650 

1,510 

1.410 

1,360 

1,240

1,140 

1,060 

982 

897 

808

720 

678 

657 

650 

685

657 

594 

566 

538 

526

824 

1,140 

832 

664 

556

502 

484 

478 

472 

460 

418

Minimum

221 

200 

122

41

168 

180 

250 

999 

3,300 

1,950 

418 

224 

161

122

Aug.

382 

352 

329 

302 

280

260 

245 

255 

255

2SO

394 

296 

312 

316 

329

329 

334 

664 

502 

532

466 

400 

364 

346

334

329 

307 

280 

270 

250 

224

Mean

345 

312 

248

1,183

221 

296 

639 

1,646 

7,338 

4,036 

811 

339 

191

1,367

Sept.

210 

197 

192 

189 

186

178 

168 

165 

165 

161

168 

168 

168 

197 

180

192 

302 

250 

210 

189

186 

178 

175 

165 

161

172 

197 

218 

228 

228

Run-off in 

acre-feet

21.190 

18,570 

15,270

858,800

13,620 

16,420 

39,300 

91,990 

451,200 

240,200 

49,880 

20,870 

11,390

989,900

Winter discharge measurement made on this day. 

Kote.- Stage-discharge relation affected by Ice HOT. 11 to Feb. 28.
146 GR3EN RIVER BASIN 

Elk River at Clark, Colo.

Location.- Water-stage recorder, lat. 40°43', long. 106°55', In sec. 28, T. 9 N., R. 85 

W., at Clark, 1 mile upsuream 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 and December 1913 to September 1922 (monthly 

discharge only), published as Elk River near Clark and October 1933 to September 1941 

In reports of Geological Survey. May 1910 to September 1922 and April 1930 to September 

1941 In reports of State engineer.

Average discharge.- 23 years, 368 second-feet.

Extremes.- Maximum discharge during year, 2,720 secotid-feet May 13 (gage height, 4.73 

feet), fron rating 'curve extended above 1,900 second-feet; minimum dally, 39 secondfeet' Feb. 8.

1910-22, 1930-41: Maximum dally discharge, 4,470 sucond-feet June 6, 9, 1912; 

minimum observed, 22 second-feet Apr. 7, 1935 (gage height, 0.62 foot).

Remarks.- Records good except those Uov. 11 to Apr. 20 and those for period of no gageheight record, which are fair. Practically no diversion or regulation.

Discharge, In -second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

139 

117 

110 

92 

117

139 

110 

100 

152 

141

119 

106 

104 

100 

98

94 

90 

*86 

85 

80

77 

77 

75 

77 

77

75 

86 

86 

88 

94 

88

Nov.

86 

83 

90 

94 

71

90 

86 

65 

85 

78

73 

70 

68 

69 

81

S8 

88 

#88 

85 

83

83 

80 

78 

75 

67

65

70 

74 

SO 

83

Dec.

S5 

84 

82 

81 

S2

83 

SO 

82 

82 

52

81 

76 

72 

65 

64

68 

73 

77 

80 

80

69 

71 

68 

62 

78

60 

*56 

59 

71 

65 

53

Jan.

50 

48 

46 

45 

44

44 

45 

45 

46 

48

48 

48 

47 

46 

46

46 

47 

47 

48 

51

52 

52 

51 

51 

56

53 

51 

«49 

48 

47 

49

Feb.

51 

53 

52 

51 

51

46 

42 

39 

43 

46

*52 

54 

51 

50 

47

52 

57 

57 

58 

51

47 

48 

50 

52 

54

56 

58 

50

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Hai

Api 

Maj 

Jui 

Ju] 

Aus 

Sej

1 ater year 1940-4

Mar.

44 

48 

54 

58 

56

52 

58 

58 

54 

56

54 

60 

54 

52 

54

58 

56 

58 

60 

64

69 

69 

SO 

82 

86

86 

88 

98 

106 

106 

108

Apr.

126 

112 

1O6 

102 

106

100 

*108 

94 

104 

117

117 

141 

166 

143 

128

121 

115 

1OO. 

90 

86

98 

123 

161 

203 

253

316 

340 

384 

445 

547

Secondfoot-days

3,079 

2,396 

2,271

103,686

1,494 

1,418 

2,086 

5,152 

39,072 

26,709 

8,690 

3,842 

2,486

98,695

May

673 

835 

1,010 

1,240 

918

73S 

6OO 

76S 

1,020 

1,290

1,410 

1,700 

2,070 

1,930 

1,460

1,160 

1,370 

1,580 

1,400 

1,050

1,140 

1,360 

1,450 

1,440 

1,610

1,570 

1,840 

1,240 

1,070 

1,060 

1,070

Maximum

152 

94 

85

2,180

56 

58 

10S 

547 

2,070 

1,160 

490 

155 

134

2,070

June

1,050 

1,000 

1,020 

1,020 

1,050

820 

972 

948 

805 

842

666 

606 

606 

673 

775

925 

1,050 

1,150 

1,160 

1,140

1,090 

1,060 

1,000 

964 

972

828 

738 

680 

574 

525

July

490 

455 

430 

416 

398

384 

364 

348 

32S 

312

292 

280 

268 

250 

240

236 

226 

216 

236 

352

284 

S43 

221 

208 

198

192 

182 

173 

164 

154 

150

Minimum

75 

65 

53

27

44 

39 

44 

86 

600 

525 

150 

92 

64

39

Aug.

141 

132 

126 

119 

115

112 

117 

123 

112 

a!20

a!28 

a!40 

a!60 

al38 

a!29

a!23 

a!34 

a!54 

a!55 

a!39

a!31 

a!28 

&126 

a!20 

112

123 

115 

100 

96 

92 

92

Mean

99.3 

79.9 

73.3

283

48.2 

50.6 

67.3 

172 

1,260 

890 

280 

124 

82.9

270

Sept.

85 

90 

80 

75 

69

64 

69 

86 

82 

78

72 

65 

64 

108 

134

100 

86 

85 

83 

77

74 

a72 

a 68 

a70 

a84

a94 

94 

88 

88 

102

Run-off In 

acre-feet

6,110 

4,750 

4,500

205,600

2,960 

2,810 

4,140 

10,220 

77,500 

52,980 

17,240 

7,620 

4,930

195,800

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of record for Yampa River at Steamboat 

Springs, Colo.

Note.- Stage-discharge relation affected by Ice Nov. 11 to Mar. 20.
GREEN RIVER BASIN 147

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., 600 feet upstream from Willow Creek and 1 mile west of Dixon. Datum of gage is 

6,332.81 feet above mean sea level, unadjusted.

Drainage area.- 988 square miles.

Records available.- May 1910 to September 1923, March 1938 to September 1941.

Extremes.- Maximum discharge during year, 4,920 second-feet May 14 (gage height, 6.58 feet); 

minimum daily, 5.6 second-feet Aug. 7.

1910-23, 1938-41: Maximum discharge observed, 8,960 second-feet May 23, 1920 (gage 

height, 8.3 feet, datum then in use), from rating curve extended above 8,000 secondfeet; minimum dally discharge, 0.6 second-foot Aug. 24-27, 1939.

Remarks.- Records good except those for periods of ice effect, which are fa-ir. Diversions 

above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

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.

26 

52 

52 

49 

46

61 

16

57 

52 

70

73 

56 

4S 

43 

40

3S

35 

33 

34 

32

32 

32 

31 

33 

35

37 

49 

65 

68 

63 

68

Nov.

65 

61 

61 

69 

65

61 

75 

73 

78 

83

*66 

55 

51 

52 

68

72 

72 

73 

73 

72

69 

72 

66 

70 

63

58 

56 

59 

76 

75

Dec.

72 

75 

69 

68 

68

70 

66 

63 

6S 

66

66 

60 

52 

50 

48

51 

58 

65 

60 

57

56 

58 

64 

74 

66

60 

62 

66 

70 

74 

68

Jan.

60 

60 

56 

56 

58

62 

64 

66 

66 

66

68 

68 

68 

68 

66

62 

*62 

62 

66 

64

70 

66 

64 

66

70

70 

68 

66 

66

70 

74

Feb.

76 

6S 

64 

64 

67

68 

64 

66 

68 

74

82 

S6 

84 

S6 

86

#85 

88 

90 

92 

94

94 

96 

100 

104 

104

100 

100 

110

Month

Oct 

Hoi 

Bee

C

Jar 

Pet 

Mar

Apr 

Maj 

Jui 

Jul 

Aug 

Ser

H

alendar year!94C) ......................

ater year 1940-4 ^

Mar.

122 

130 

125 

122 

125

126 

121 

121 

119 

107

103 

119 

9S 

*105 

107

109 

126 

230 

436 

484

442 

386 

484 

320 

236

19S 

205 

272 

397 

430 

345

Apr.

581 

424 

345 

316 

392

365 

26S 

272 

312 

350

320 

44S 

640 

490 

496

466 

442 

345 

276 

233

24S 

307 

448 

614 

685

840 

916 

1,020 

1,280 

1,440

Secondfoot-days

1,426 

2,009 

1,970

127,694.5

2,018 

2,360 

6,850 

15,579 

68,660 

34,011 

1,386 

1,430.0 

1,600

159,299.0

May

1,660 

1,830 

2,330 

3,400 

3,710

2,750 

2,170 

1,990 

2,890 

3,280

3,640 

3,530 

4; 240 

4,470 

3,760

2,960 

2,820 

3,210 

3,240 

2,500

2,420 

2,430 

2,690 

2,760 

2,870

2,880 

3,020 

2,740 

2,350 

2,150 

1,970

Maximum

73 

83 

75

3,320

74 

110 

4S4 

1,440 

4,470 

1,940 

162 

16S 

142

4,470

June

1,940 

1,810 

1,670 

1,570 

1,740

1,750 

1,460 

1,740 

1,520 

1,620

1,500 

1,210 

1,190 

1,140 

1,210

1,230 

1,210 

1,230 

1,150 

1,030

899 

809 

68S 

584 

584

455 

350 

295 

232 

195

July

162 

155 

131 

106 

S8

73 

63 

56 

. 48 

43

38 

34 

32 

32 

31

28 

25 

23 

20 

22

30 

22 

IS 

16 

14

14 

13 

13 

13 

12 

11

Minimum

16 

51 

48

1.8

56 

64 

98 

233 

1,660 

195 

11 

5.6 

25

5.6

Aug.

9.8 

12 

12 

9.8 

8.6

7.S 

5.6 

6.4 

12 

26

76 

67 

73 

48 

28

28 

80 

16S 

102 

69

50 

40 

34 

31 

40

ee

S4 

63 

55 

46 

4S

Mean

46.0 

67.0 

63.5

349

65.1 

S4.3 

221 

519 

Z, 8 60 

1,134 

44.7 

46.1 

53.3

436

Sept.

50 

40 

32 

30 

31

31 

2S 

31 

39 

45

32 

25 

26 

60 

142

S8 

67 

57 

55 

56

48 

45 

45 

54 

72

76 

7S 

73 

72 

72

Run-off in 

acre-feet

2,S30 

3,980 

3,910

253,200

4,000 

4,6SO 

13,590 

30,900 

175,900 

67,460 

2,750 

2,S40 

3,170

316,000

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 26-2S, Dec. 15 to Mar. 5.
148 GREEN RIVSR BASIN 

Little Snake River near Lily, Colo,

Location.- Water-stage recorder, lat. 40°S2', long. 108°25', in sec. 20, T. 7 N., R. 98 

w., 5 miles north of Lily and 10 miles upstream from mouth,

Drainage area.- 3,730 square miles.

Records available..- June to August 1904, May 1922 to September 1927, and October 1933 to 

September 194T~in reports of U. S. Geological' Survey, June to August 1904, May 1922 

 to September 1941 in reports of State engineer.

Extremes.- Maximum discharge during year, 8,740 second-feet Aug. 17 (gage height, 6.83 

feet), from rating curve extended above 4,300 second-feet; minimum daily, 4,6 secondfeet Aug. 5, 6.

1904, 1922-41: Maximum discharge, 14,200 second-feet May 27, 1926 (gage height, 

10.5 feet); no flow at times in 1924, 1930, 1931, 1934-36, 1939-40.

Remarks.- Records fair except those for period May 5 to June 30, which are good. 

Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27 

S3 

29 

30 

31

Oct.

1,190 

1,240 

720 

462 

320

229 

155 

114 

104 

111

95 

95

118 

114 

92

82 

*6S 

62 

58 

55

55 

50 

70 

68 

68

46 

58 

80 

,38 

90 

100

Nov.

S3 

82 

95

88 

125

170 

118 

201 

122 

90

60 

78 

75 

70 

50

48 

46 

41 

#39 

39

39 

39 

41 

42 

37

38 

35 

32 

39 

42

Dec.

» 35

Jan.

 40

Feb.

> 56

Month

Dot 

Nov 

Dec

C

Jan 

Pet 

Mar

Apr 

May 

Jun 

Jul 

Aug 

Sep

V

alendar year 194 3 ......................

ater year 1940-4]

Mar.

77 

83 

87 

85 

85

86 

86 

86 

85 

85

87 

89 

80 

78 

79

82 

IQO 

140 

*350 

1,030

1,120 

990 

838 

780 

354

629 

479 

411 

439 

451 

586

Apr.

601 

580 

804 

713 

615

594 

574 

587 

451 

580

713 

SOO 

720 

1,000 

1,050

900 

910 

840 

800 

650

520 

430 

460 

540 

800

1,000 

1,100 

1,200 

1,350 

1,500

Secondfoot-days

6,257 

2,109 

1,085

136,820.1

1,240 

1,568 

10,477 

23,332 

91,350 

37.941 

2,695 

16,561.8 

4,359

199,024.2

May

1,650 

1,800 

2,100 

2,350 

3,050

4,440 

3, ISO 

2,510 

8,070 

2,800

3,360 

3,520 

3,780 

3,940 

3,850

4,260 

3,430 

3,040 

3,260 

3,340

2,970 

2,670 

2,600 

2,620 

2,680

2,760 

2,980 

2,840 

2,890 

2,460 

2,180

Maximum

1,240 

801

3,100

1,120 

1,500 

4,440 

1,990 

335 

2,660 

497

4,440

June

1,990 

1,900 

1,320 

1,680 

1,600

1,580 

1,900 

1,6SO 

1,670 

1,760

1,560 

1,680 

1,470 

1,240 

1,200

1,130 

1,200 

1,200 

1,200 

1,180

1,110 

1,010 

916 

829 

735

643 

608 

544 

456 

400

July

335 

295 

263 

216 

197

132 

159 

129 

107 

104

73 

65 

60 

48 

60

50 

2S 

22 

20 

18

16 

16 

46 

62 

30

21 

18 

16 

13 

11 

10

Minimum

46 

32

0

77 

430 

1.650 

400 

10 

4.6 

32

4.6

Aug,

10 

8,0 

6.0 

8.5 

4.6

4.6 

5.5 

25 

25 

29

556 

2,660 

2,060 

1,060 

491

250 

1,480 

2,230 

787 

485

377 

282 

808 

159 

201

361 

970 

685 

508 

356 

272

Mean

202 

70.3 

35.0

374

40.0 

56.0 

338 

779 

2,947 

1,265 

88.9 

534 

145

545

Sept.

356 

335 

174 

163 

122

35 

68 

58 

50 

42

36 

32 

44 

75 

378

320 

497 

335 

812 

136

140 

104 

100 

95 

80

62 

52 

58

72 

78

Run-off in 

acre-feet

12,410 

4,180 

2,150

271,300

2,460 

3,110 

20,780 

46,380 

181,200 

75,250 

5,350 

32,850 

8,650

394,800

# Winter discharge measurement made on this day.

Note.- No gage-height record Apr. 12 to May 4j discharge computed on the basis of two discharge 

measurements and record for station at Dixon, Wyo. Stage-discharge relation affected by ice Nov. 

16 to Mar. 19.
GREEN RIVER BASIN 149

Savery Creek at upper station, near Savery, Wyo.

Location.- water-stage recorder, lat. 41°13', long. 107°22', in SWi sec. 35, T. 15 N., 

K. 89 w., half a mile downstream from Coal Gulch and 14.5 miles northeast of Savery.

Drainage area.- 189 square miles.

Records available.- October 1940 to September 1941.

Extremes.- Maximum discharge during year, 495 second-feet May 5 (gage height, 4.80 feet), 

from rating curve extended above 360 second-feet; minimum daily, 3.8 second-feet Aug. 6.

Remarks.- Records good except those for period of ice effect, which are poor. Diversions 

aoove station for irrigation.

Cooperation.- Gage-height record and results of discharge measurements Oct. 1 to July 8 

furnished by Bureau of Reclamation.

Discharge, in second-feet, water year October 1940 to September 1941

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.

24 

20 

16 

16 

14

14 

13 

12 

11 

12

12 

11 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

11

11 

16 

20 

17 

18 

17

NOT.

16 

16 

17 

19 

16

17 

19 

18 

19 

19

15 

14 

14 

11 

12

14 

14 

14 

16 

*14

14 

16 

15 

15 

15

19 

19 

20 

20 

20

Dec.

19 

20 

22 

21 

20

21 

20 

19 

19 

17

14 

12 

11 

10 

9

*9 

11 

14 

14 

13

13 

13 

14 

16 

15

14 

15 

16 

16 

17 

15

Jan.

' 15

Feb.

19 

(*)

Month

Oc1 

Noi 

De<

C

Jas 

Pel 

Mai aJut 

Ju] 

Auj 

Se

1

Calendar year

 11. ..... ... . ....

y..... .................................

'ater year 1940-4 ^

Mar.

60

Apr.

170 

130 

100 

110 

*117

S5 

64 

61 

60 

68

67 

104 

188 

120 

116

118 

121 

96 

79 

66

67 

78 

120 

156 

172

196 

205 

19S 

273 

305

Secondfoot-days

405 

487 

479

-

465 

632 

1,860 

3,810 

6,955 

2,061 

396.6 

360.5 

310.2

18,121.5

May

308 

275 

325 

390 

411

325 

264 

227 

257 

275

292 

266 

318 

325 

264

210 

186 

186 

185 

170

159 

142 

136 

132 

135

140 

141 

147 

138 

120 

106

Maximum

24 

20 

22

-

305 

411 

129 

24 

34 

18

411

June

100 

93 

85 

79 

88

129 

105 

116 

108 

US

117 

68 

82 

71 

67

68 

65 

56 

51 

45

42 

41 

38 

36 

36

32 

29 

26 

25 

25

July

23 

24 

22 

19 

17

15 

14 

12 

12 

12

11 

10 

12 

16 

16

23 

16 

12 

9.5 

11

14 

12 

9.5 

8.0 

7.2

7.6 

7.2 

6.5 

6.5 

6.1 

5.7

Minimum

10

11

9

-

60 

106 

25 

5.7 

3.8 

6.9

3.6

Aug.

6.1 

5.0 

5.3 

4.6 

4.0

3.8 

4.6 

12 

7.2 

6.5

34 

16 

11 

12 

6.9

10 

20 

14 

10 

S.5

10 

10 

12 

10 

19

29 

21 

14 

10 

10 

14

Mean

13.1 

16.2 

15.5

-

15 

19 

60 

127 

224 

68.7 

12.6 

11.6 

10.3

49.6

Sept.

12 

9.0 

7.2 

7.2 

S.O

7.6 

7.2 

,7.6 

9.0 

S.5

S.O 

6.9 

8.0 

18 

18

14 

10 

9.0 

12 

10

S.5 

9.0 

9.5 

12 

14

12 

12 

12 

12 

12

Run-off In 

acre-feet

803 

966 

950

-

922 

1,060 

3,690 

7,560 

13,600 

4,090 

767 

715 

615

35,960

* Winter discharge measurement made on this day.

Rote.- Stage-discharge relation affected by Ice Dec. 12 to Apr. 4.
150 QREEN RIVER BASIN

Slater Fork near Slater, Colo.

Location.- Water-stage recorder, lat. 40°59', long. 107°23', In SWi sec. 21, T. 12 N., R. 

89 W-, about 1 mile upstream from mouth and li miles south of Slater.

Drainage area.- 161 square miles.

Records available.- May 1910 to May 1912 and October 1933 to September 1941 in reports of 

U. S. Geological Survey. May 1910 to May 1912 and June 1931 to September 1941 in reports 

of State engineer.

Average discharge.- 10 years, 65.6 second-feet.

Extremes.- Maximum discharge during year, 804 second-feet May 14 (gage height, 7.86 feet), 

from rating curve extended above 600 second-feet; minimum daily, 1.0 second-foot Aug. 5.

1910-12, 1931-41: 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 below 100 second-feet, which are fair. .Diversions 

above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

37 

26 

22 

18 

17

22

21 

19 

21 

29

21

16 

14 

13 

13

12 

12 

12 

12 

12

13 

13 

14 

14 

14

15 

20 

21 

20 

20 

19

Nov.

18 

18 

18 

21 

16

21 

20 

18 

20 

19

15 

18 

12 

12 

13

15 

16 

*17 

18 

17

17 

17 

16 

15 

16

17 

15 

16 

17 

17

Dec.

15 

17 

16 

16 

15

15 

16 

15 

15 

14

«9.6 

13 

11 

11 

12

12 

13 

14 

13 

13

13 

12 

13 

13 

13

13 

13 

13 

13 

13 

13

Jan.

12 

13 

12 

12 

12

13 

13 

13 

13 

13

12 

12 

12 

13 

13

14 

*14 

13 

13 

13

14 

13 

13 

12 

12

11 

11 

11 

12 

14 

14

Feb.

13 

12 

12 

13 

14

15 

15 

16 

17 

18

18 

19 

19 

IS 

IS

*17 

17 

17 

17 

16

16 

18 

17 

17 

16

14 

13 

19

Month

Oct 

Non 

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj

JUTl

Jul 

Aug 

Sej

VI

alendar year 1940..... .................

ater year 1940-4

Mar.

24 

26 

22 

19 

21

18 

19 

19 

23 

19

19 

13 

21 

#18 

16

19 

21 

41 

57 

47

36

33 

42 

35 

29

26 

27 

26 

27 

28 

25

Apr.

36 

32 '32

31 

40

33 

38 

35 

38

43

40 

60 

73 

55 

54

57 

54 

42 

38 

32

34 

47 

68 

84 

SS

116 

121 

159 

197 

214

Secondfoot-days

552

605 

417.6

19,137.7

392 

461 

821 

1,991 

12,679 

5,935 

557.0 

449.4 

389.5

25,139.5

May

250 

274 

330 

582 

464

367 

323 

362

477 

518

536 

532 

644 

618 

484

389 

397 

443 

401 

313

328 

356 

 367 

371 

399

414 

427 

369 

327 

315 

302

Maximum

37 

21 

17

379

14 

19 

57 

214 

644 

336 

50 

44 

34

644

June

292 

265

247 

248 

277

261 

261 

336 

255 

274

264 

202 

202 

203

235

242 

222 

219 

202 

179

159 

143 

128 

126 

131

101 

81 

72 

57 

51

July

50 

44 

38 

35 

27

21 

22 

21 

20 

19

15 

16 

14 

15 

14

13 

12 

10 

10 

14

16 

14 

12 

11 

9.S

9.4 

12 

12 

12 

10 

8.8

Minimum

12 

12 

9.6

.5

11 

12 

13 

31 

250 

51 

8.8 

1.0 

8.7

1.0

Aug.

9.2 

8.4 

6.8 

5.0 

1.0

1.8 

3.4 

5.7 

5.4 

5.7

16 

32 

27 

18 

15

15 

33 

44 

26 

19

16 

15 

14 

14 

15

16 

15 

13 

11 

11 

12

He an

17.8 

16.8 

13.5

52.3

12.6 

16.1 

26.5 

66.4 

409 

198 

18.0 

14.5 

13.0

68.9

Sept.

11 

10 

9.6 

9.6 

10

9.2 

9.0 

9.4 

10 

10

9.4 

8.7 

9.6 

34 

26

16 

13 

\Z 

14 

12

11 

10 

10 

13 

15

17 

15 

15 

15 

16

Run- off In 

acre-feet

1,090 

1,000 

S28

37,960

778 

895 

1,330 

3,950 

25,150 

11,770 

1,100 

891 

773

49,860

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Hov. 13-17, Feb. 1-11, 21-25, Mar. 1-3.
GREEN RIVER BASIN 151

Ashley Creek near Vernal, Utah

Location.- Water-stage recorder, lat. 40°35', long. 109°37', in sec. 1, T. 3 S., R. 20

 E., three-quarters of a mile upstream from head of Utah Power & Light Co.'s canal 

and 12 miles northwest of Vernal.

Drainage area.- 101 square miles.

Records available.- June 1914 to September 1941. March 1900 to December 1904 (fragmentary)

 at site Just downstream from Dry Fork. October 1911 to June 1914 at power plant li 

miles downstream.

Average discharge.- 25 years (1914-16, 1918-40), 104 second-feet.

Extremes.- Maximum discharge during year, 1,340 second-feet May 13 (gage height, 8.55 

feet); minimum daily, 25 second-feet Mar. 26.

1911-41: Maximum discharge, 2,050 second-feet May 29, 1921; minimum recorded, 16 

second-feet Mar. 21, 1937.

Remarks.- Records good. Plow is increased by waters released from the Oaks Park Reser-

 volr (capacity, 6,250 acre-feet) on Brush Creek and diverted to the Ashley Creek Basin 

for irrigation. No diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

86

86 

87 

28 

29 

30 

31

Oct.

S7 

83 

S9 

S5 

SI

SI 

79 

79 

SI 

SI

SI 

SI 

79 

79 

79

79 

77 

77 

75 

75

75 

75 

75 

74 

74

74 

75 

7? 

72 

75 

68

NOT.

70 

72 

70 

68 

67

67 

65 

65 

63 

63

57 

56 

52 

50 

50

52 

52 

53 

56 

54

52 

50 

50 

49 

49

49 

47 

46 

45 

45

Dec.

45 

42 

42 

41 

41

41 

40 

40 

39 

39

38 

3S 

35 

35 

35

36 

36 

35 

35 

35

34 

34 

35 

35 

35

35 

35 

35 

35 

35 

35

Jan.

34 

33 

33 

33 

33

33 

32 

31 

32 

32

32 

31 

31 

31 

30

30 

30 

30 

30 

30

30 

30 

30 

30 

30

30 

29 

29 

29 

29 

29

Feb.

29 

28 

28 

29 

30

29 

29 

29 

29 

28

29 

29 

2S 

28 

2S

29 

29 

30 

29 

29

29 

30 

30 

29 

29

28 

27 

28

Month

Oet 

HOT 

Dec

C

Jut 

Fel 

 u

?>Jui 

JuJ 

Au« 

Sej

1

alendar year 19^to. .....................

Tater year 1940-"

liar.

2S 

29 

2S 

28 

2S

2S 

2S 

2S 

2S 

27

2S 

27 

2S 

27 

26

26 

26 

2S 

2S 

29

29 

29 

2S 

2S 

27

25 

26 

27 

27 

27 

27

Apr.

27 

27 

26 

26 

26

26 

26 

26 

26 

25

25 

25 

25 

25 

25

25 

25 

26 

26 

26

26 

26 

28 

29 

30

30 

33 

34 

35 

38

Secondfoot-days

2,417 

1,684 

1,151

26,770

956 

806 

855 

823 

15,220 

11,808 

4,687 

3,899 

3,431

46,535

May

42 

49 

59 

72 

10S

161 

178 

204 

313 

437

569 

S06 

1,000 

S50 

605

510 

672 

79S 

505 

426

505 

638 

726 

740 

654

690 

654 

572 

550 

561 

566

Maximum

S9 

72 

45

495

34 

30 

29 

38 

1,000 

632 

1S4 

130 

132

1,000

June

540 

500 

515 

515 

453

3S7 

632 

491 

430 

395

3S7 

366 

370 

346 

404

458 

440 

435 

366 

339

316 

291 

274 

274 

258

233 

215 

195 

193 

19t>

July

184 

176 

174 

161 

158

158 

153 

153 

145 

138

123

161 

168 

148 

145

150 

150 

148 

153 

153

174 

171 

171 

168 

179

168 

158 

99 

95 

95 

110

Minimum

68 

45 

34

22

29 

27 

25 

25 

42 

190 

95 

84 

95

25

Aug.

121 

121 

121 

117 

117

91 

91 

91 

97 

103

91 

S5 

106 

112 

112

108 

103 

121 

123 

123

114 

101 

106 

99 

103

106 

95 

S7 

aS4 

a!30 

a!20

Mean

78.0 

56.1 

37.1

73.1

30.S 

28. S 

27.5 

27.4 

491 

374 

151 

106 

114

127

Sept.

al24 

al28 

alSO 

al32 

al26

a!22 

allS 

al!4 

al!6 

allS

108 

alOS 

al!6 

a!24 

a!24

allS 

al!4 

allS 

117 

103

95 

99 

101 

89. 

101

123 

123 

110 

110 

110

Run-off In 

acre-feet

4,790 

3,340 

2,280

53,100

1,900 

1,600 

1,690 

1,630 

30,190 

22,310 

9,500 

6,540 

6,810

92,380
152 GREEN RIVER BASIN 

Duchesne River at Provo River Trail, near Hanna, Utah

Location.- Water-stage recorder, 'lat. 40°37', long. 110°54', In SEi sec. 27, T. 3 N., R. 

9 w., Ulnta meridian', 400 feet dovmstream from Provo River trail bridge, 7 miles upstream from Hades Creek, and 12 miles northwest of Hanna. Altitude of gage, 8,120 

feet (from topographic map).

Drainage area.- 39 square miles.

Records available.- July 1929 to September 1933 and October 1935 to September 1941.

Extremes.- Maximum dally discharge during year, 540 second-feet May 26; minimum dls- 

 cnarge recorded, 9 second-feet Sept. 17, 18 but may have been less during period of

no gage-height record.

1929-33, 1935-41: Maximum discharge recorded, 888 second-feet June 24, 1932; 

minimum recorded, 1 second-foot Aug. 30, 1931.

Remarks.- Records good except those for periods of no gage-height record, which are 

 fair. Records show flow of river at proposed diversion tunnel to Provo River. No 

diversions above station.

Cooperation.- Water-stage recorder graph and five discharge measurements furnished by 

Bureau or Reclamation.

Discharge, In seoond-f««t, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 15'

16 

17

le

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct. ,

40 

36 

38 

34 

32

29 

28 

30 

3S 

38

37 

36 

34 

31 

29

27 

26 

24 

24 

23

22 

21 

21 

20 

19

23

24 

23

21 

21 

20

. HOY*

IS 

18 

IS 

18 

16

18 

17 

16 

16

16

>r

Dec.

> 10

Jan.

S

Feb.

8

Month

Dot 

Noi 

Dec

C

Jar 

Fel 

Kai 

Api 

Baj 

Jui 

Ju]

AUJ

Sei 

T

mary

 11. ....................................

y..... .................................

rater year 1940-4 L

liar.

10

Apr.

12

20

Secondfoot -days

S69 

4S7 

310

14,S76

24S 

224 

310 

416 

9,493 

9,475 

1,653 

705 

342

24,532

Hay

55 

55 

60 

65 

70

65 

65 

SO 

180 

200

300 

329 

464

600 

425

400 

425 

475 

350 

250

300 

450 

480 

460 

520

540 

450 

420 

400 

370 

350

Maximum

40

530

540 

440 

116 

33 

14

540

June

360 

360 

370 

350 

330

400 

380 

370 

330 

330

360 

370 

398, 

380 

420

44Jb

«S§ 

388 

36b 

336

319 

1292 

263 

245 

225

182 

158 

137 

122 

116

July

116 

99 

88

81 

79

"I 

7| 

74 

65 

59

6S 

67 

55 

53 

46

44 

43 

40 

52 

49

40 

36 

34 

33 

34

34 

32 

26 

26 

24 

23

Minimum

19

-

55 

116 

23 

14 

9

-

. /tag.

23

Bl

eo 

eo

19

2S 

31 

32 

26

31

33 

29 

83 

84 

23

2S 

26 

23

21 

19

IS 

20 

18 

18 

30

23

18 

16 

14 

16 

14

Mean

28.0 

16.2 

10

40.6

S 

S 

10 

13.9 

306 

316 

53,3 

22.7 

11.4

67.2

Sept.

13 

18

14 

14 

13

18 

18 

18 

11 

11

10 

10 

1011

10

10 

9 

9 

11 

11

12 

12 

14 

13 

12

18 

11 

11 

10 

10

Run-off In 

aore-feet

1,720 

9S6 

615

29,490

492 

444 

615 

825 

1S,S30 

18,790 

3,280 

1,400 

67S

48,660

Note.- Ho gage-height record Nov. 10 to Bay 11, Bay 14 to June 19 and Sept. 19-30j discharge computed on basis of one discharge measurement and records for station near Tablona, Rook Creek near 

Mountain Home, and other Duchesne River stations.
GREEN RIVER BASIN 153

Duchesne River near Tablona, Utah

Location.- Water-stage recorder, lat. 40°18', long. 110°36', In SWi sec. 17, T. 2 8., R. 

6 w., Ulnta meridian, at bridge on State highway 35, 5i miles upstream from Rock Creek 

and 8 miles southeast of Tablona.

Drainage area.- 352 square miles.

Records available.- January 1919 to September 1941.

Average discharge.- 22 years, 205 second-feet.

Extremes.- Maximum discharge during year, 1,330 aecond-feet May 27 (gage height, 6.61 

reet;; minimum, 65 second-feet Mar. 15.

1919-41: Maximum discharge observed, 2,500 second-feet June 13, 1921, from rating 

curve extended above 1,100 second-feet; minimum recorded, 27 second-feet Oct. 17, 1934.

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

wmcn'are fair. Several diversions above station for Irrigation.

Discharge, In seoond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

SO

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

181 

173 

176 

178 

166

163 

156 

151 

166 

173

163 

159 

156 

151 

145

142 

142 

140 

134 

134

134 

131 

125 

121 

119

123 

136 

127 

121 

119 

119

Nor.

115 

115 

119 

119 

109

119 

121 

119 

117 

113

113 

109 

102 

111 

111

113 

115 

115 

117 

111

109 

100

alOO 

a!02 

allO

a!05 

a!07 

a!05 

 109 

111

Dec.

109 

107 

107 

105 

100

102 

100 

97 

100 

68

S6 

92

> W5 

' b90

Jan.

(*) 

> b85

Feb.

> b80

86 

67 

86 

36 

86

S6 

S2 

86 

«86 

S6

87 

90 

90 

93 

90

SO 

80 

SS

Month

Oct

Hoi 

Dec

C

Jar 

Pel 

Mai 

Api 

Ha, 

Jut 

Ju] 

Auj 

Set

«

alendar year 194 0......................

Fater year 1940-4

Mar.

92 

95 

90 

86 

92

88 

82 

86 

92 

80

87 

76 

S2 

87 

78

84 

93 

102 

104 

104

102 

111 

109 

104 

9S

92 

97 

102 

104 

9S 

107

Apr.

119 

109 

106 

102 

119

107 

100 

102 

104 

113

113 

119 

119 

107 

107

109 

100 

97 

102 

102

9S 

102 

107 

115 

119

131 

151 

159 

184 

206

Secondfoot -days

4,524

3,341 

2,S43

49,864

2,635 

2,355 

2,904 

3,527 

22,153 

19,693 

5,727 

2,903 

2,991

75,596

May

214 

223 

242 

26S 

271

278 

264 

295 

375 

524

622 

793

1,080 

1,180 

996

874 

932 

1,140 

913 

710

431

528 

1,040 

1,120 

1,080

1,180 

1,280 

1,020 

848 

769 

721

Maximum

1S1 

121 

109

991

S5 

93 

111 

206 

1,220 

874 

325 

125 

142

1,220

June

676 

676 

676 

739 

693

644 

835 

739 

781 

664

649

715 

757 

799 

775

817 

874 

861 

775 

710

676 

632 

595 

548 

528

453 

405 

379

352 

340

July

325 

SOS 

875 

866 

242

235 

226 

220 

197 

168

166 

166 

189 

809 

166

151 

145 

140 

159 

173

151 

142 

138 

136 

145

154 

168 

156 

145 

147 

136

Minimum

119 

100 

86

53

85 

80 

76 

97 

214 

340 

136 

SO 

75

75

Aug.

125 

111 

104 

68 

92

92 

97

104 

102 

115

107

100 

88 

SO 

82

88 

93 

88 

84 

82

86 

88 

93 

93 

90

92 

88 

S7 

87 

87 

90

Mean

146

111 

91.7

136

85. 0 

S4.1 

93.7 

US 

715 

656 

185 

93.6 

99.7

207

Sept.

93

37 

87 

87 

87

84 

76 

SO 

SI 

80

76 

75

82 

87 

78

76 

SI 

97 

119 

105

104 

127 

142 

136 

131

129 

127 

127 

127 

123

Run-off In 

acre-feet

8,970 

6,630 

5,640

98,910

5,230 

4,670 

5,760 

7,000 

43 ,940 

39,060 

11,360 

5,760 

5,930

150,000

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for station at Duohesne.

b Stage-discharge relation affected by loe.
154 GREEN RIVER BASIN

Duchesne River at Duchesne, Utah

Location.- Water-stage recorder, lat. 40°09 1 55B , long. 110°23'50B , in SWiNEi 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 1941.

Average discharge.- 24 years, 372 second-feet.

Extremes.- Maximum discharge during year, 3,160 second-feet May 24 (gage height, 5.05 

feet); minimum, 95 second-feet Mar. 12.

1917-41: 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 period of ice effect, which are fair. Diversions 

aDove station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

IV 

18 

19 

20

21 

22 

23 

24 

25

26 

2V 

28 

29 

30 

31

Oct.

334 

312 

299 

303 

294

282 

270 

270 

290 

294

282 

274 

270 

258 

254

250 

246 

239 

235 

232

232 

224 

220 

217 

213

220 

270 

250 

235 

228 

228

MOT.

217 

213 

217 

228 

210

210 

228 

220 

213 

213

206 

206 

1S6 

199 

210

210 

210 

213 

217 

213

196 

176 

179 

182 

206

196 

199 

196 

206 

196

Dec.

193 

182 

182 

1S2 

179

182 

179 

176 

176 

173

147 

160 

132 

129 

106

^ b!70

Jan.

(*) 

> b!55

Feb.

> b!60

(*)

163 

160 

157 

147 

150

135 

132 

147

Month

Oct 

Don 

Dec

C

Jar 

Pet 

Mar 

Apr

Jui 

Jul 

Aug 

Sep

1

alendar year 194(D ......................

ater year 1940-^

liar.

147 

166 

153 

144 

141

141 

135 

132 

141 

123

126 

120 

114 

129 

117

117 

126 

138 

147 

147

141 

157 

160 

160 

160

147 

147 

153 

157 

153 

157

Apr.

179 

176 

160 

153 

173

169 

157 

153 

153 

169

182 

193 

193 

173 

166

169 

176 

160 

166 

166

163 

166 

166 

179 

179

182 

203 

217 

243 

274

Secondfoot-days

8,025 

6,171 

5,198

86,976

4,805 

4,391 

4,396 

5,358 

36,413 

41,294 

12,271 

6,318 

5,578

140,218

May

290 

299 

321 

348 

368

363 

344 

358 

464 

616

782 

1,020 

1,460 

1,690 

1,480

1,260 

1,320 

1,650 

1,500 

1,140

1,050 

1,260 

1,860 

2,180 

2,130

2,160 

2,370 

1,940 

1,590 

1,420 

1,380

Maximum

334 

228 

193

2,050

155 

163 

166 

274 

2,370 

1,660 

714 

308 

303

2,370

June

1,350 

1,380 

1,450 

1,570 

1,480

1,330 

1,650 

1,500 

1,460 

1,240

1,110 

1,220 

1,370 

1,490 

1,460

1,550 

1,740 

1,960 

1,800 

1,640

1,660 

1,520 

1,450 

1,330 

1,310

1,090 

930 

817 

739 

698

July

714 

668 

609 

580 

552

533 

514 

507 

459 

403

368 

372 

372 

470 

363

330 

308 

286 

312 

424

325 

290 

274 

262 

266

299 

330 

303 

270 

262 

246

Minimum

213 

176 

106

51

155 

132 

114 

153 

290 

698 

246 

169 

141

106

Aug.

232 

213 

196 

179 

169

176 

199 

228 

213 

308

262 

235 

217 

189 

186

203 

239 

217 

196 

186

182 

189 

193 

189 

189

820 

189 

176 

173 

189 

186

Mean

259 

206 

168

238

156 

157 

142 

179 

1,175 

1,376 

396 

204 

186

384

Sept.

176 

166 

153 

157 

157

176 

169 

166 

169 

153

147 

141 

176 

179 

166

150 

147 

153 

806 

186

176 

220 

303 

846 

228

228 

880 

280 

824 

220

Run-off in 

acre-feet

15,980 

18,840 

10,310

172,500

9,530 

8,710 

8,780 

10,630 

72,220 

81 ,910 

24,340 

12,530 

11,060

878,100

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
GREEN RIVER BASIN 155

Duchesne River at My tori, Utah

Location.- Water-stage recorder, lat. 40°12', long. 110°03', In NWi sec. 25, T. 3 S., R. 

B w.1 , Ulnta meridian, at Mytpn, 3 miles downstream from Lake Fork.

Drainage area.- 2,750 square miles.

Records available.- October 1899 to November 1910, July 1911 to September 1941.

Average discharge.- 33 years (1899-1902, 1911-41), 630 second-feet.

Extremes.- Maximum discharge during year, 4,610 second-feet June 18 (gage height, 5.70 

feet); minimum, 49 second-feet Aug. 6.

1899-1941: 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, less 

than 1 second-foot July 16, 1931, and on several days In August and September 1934.

Remarks.- Records good except those for period of doubtful gage-height record or Ice effect, 

whlch are fair. Large diversions above station for Irrigation. Flow affected by 

reservoirs above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

1

a

9

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

S3 

24 

25

26 

27 

28

sa

30 

31

Oct.

634 

636 

d460 

d440 

d440

d480 

d410 

d410 

d460 

d450

d410 

d370 

d3SO 

d935 

d325

d310 

d300 

d295 

dS85 

dS80

d270 

d265 

260 

855 

265

860 

340 

336 

894 

280 

8S4

NOT.

870 

270 

275 

294 

284

365 

336 

314 

289 

884

865 

289 

266

365 

294

320 

330 

335 

362 

366

389

346 

309 

335 

346

372 

366 

356 

384 

417

Dec.

406 

394 

389 

378 

367

351 

366 

351 

346 

340

889 

304 

880 

260 

306

201 

> b326

Jan.

. b250 

> 1)275

Feb.

> b275

> b310

314 

294

314

Month

dot 

Noi 

Dec

C

Jar 

Pet 

Hai 

Apr 

Maj 

Jur 

Jul 

Auf 

Be;

1

alendar year 194 0..... .................

rater year 1940-4

Mar.

356 

423 

406 

330 

299

304 

299 

265 

241 

214

192 

160 

159 

167 

167

166

167 

205 

2S2 

223

201 

196 

214 

218 

237

218 

201 

184 

188 

188 

180

Apr.

196 

2SO 

227 

192 

196

275 

201 

1S8 

196 

209

294 

400 

406 

362 

325

320 

. 335 

309 

299 

299

280 

884 

880 

886 

896

351 

367 

411 

475 

594

Secondroot-days

11,008 

9,521 

10,092

96,499

8,225 

8,182 

7,210 

9,139 

62,101 

76,682 

13,516 

6,923 

5,392

227,991

May

695

716 

76S 

872 

1,020

1,070 

1,150 

1,080 

1,280 

1,450

1,700 

2,080 

2,520 

2,930 

8,820

2,310 

2,080 

2,870 

2,410 

1,910

1,680 

1,700 

8,480 

3,080 

3,890

3,200 

3,560 

3,220 

2,630 

2,230 

2,080

Maximum

634 

417 

406

1,700

483 

594 

3,560

3,930 

904 

518 

500

3,930

June

2,000 

2,110 

2,130 

2,480 

2,360

2,090 

2,700 

3,110 

2,990 

2,680

2,400 

2,230 

2,370 

2,690 

2,920

3,060 

3,450 

3,930 

3,640 

3,340

3,400 

3,180 

2,940 

2,880 

2,740

2,050 

1,610 

1,240 

1,080 

992

July

S58 

904 

812 

745 

760

647 

594 

556 

594 

440

373 

346 

5V2 

524 

476

423 

314 

270 

255 

524

417 

275 

232 

209 

196

227 

304 

294 

223 

192 

156

Minimum

255 

 265 

201

4

156 

18S 

695 

992 

156 

56 

61

56

Aug.

136 

119 

106 

82 

66

66 

61 

886 

192 

434

518 

394 

330 

884 

237

884

394 

335 

850 

167

198 

196 

205 

237 

218

241 

21S 

167 

152 

175 

192

Mean

356 

317 

336

264

365 

292 

233 

305 

2,003 

2,556 

436 

223 

ISO

625

Sept.

167 

148 

128 

89 '86

92 

102 

95 

76 

72

66 

61 

75 

144 

166

126 

109 

116 

137 

14S

148 

246 

600 

423 

330

385 

320 

304 

304 

304

Run- off In 

acre-feet

21,830 

18,880 

20,020

191,400

16,310 

16,230 

14,300 

18,130 

133,200 

152,100 

26 ,810 

13,730 

10,690

468,200

b Stage-discharge relation affected by Ice. 

d Doubtful gage-height record; discharge computed on basis of records for stations at Duchesne 

and near Tablona.

461676 0-42-11
156 GREEN RIVER BASIN

Rock Creek near Mountain Home, Utah

Location.- Water-stage recorder, lat. 40°30', long. 110°35', In SWi sec. 9, T. 1 N., R. 

6 w., ULnta meridian, at Lower Stlllwater 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.

Drainage area.- 149 square miles.

Records available.- November 1937 to September 1941.

Extremes.- Maximum discharge during year, l,e second-feet June 18 (gage height, 5.06

reet); minimum, 20 second-feet Apr. 18.

1937-41: Maximum discharge observed, 1,790 second-feet June 4, 1938 (gage height, 

11.19 feet; site and datum then in use); minimum discharge, 7 second-feet Mar. 13, 1940, 

probably caused by Ice Jams above station.

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

No diversions above station.

Cooiperation.^ Water-stage recorder graph and seven discharge msaeurements furnished by 

Bureau or Reclamation.

Day

1

a

3 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

SS 

30 

31

Oct.

205 

181 

184 

176 

171

157 

151 

153 

169 

167

161 

159 

151 

141 

134

130 

127 

122 

118 

113

111 

108 

105 

102 

100

113 

125 

118 

104 

110 

99

HOT.

98 

98 

102 

99 

74

96 

98 

90 

89 

82

80 

77 

75 

80 

88

80 

SO 

80 

80 

75

73 

64 

67 

67 

72

63 

65 

69 

69 

69

Dec.

67 

65 

63 

63 

62

62 

60 

69 

59 jet

44

48 

45

> aeo

Jan.

> ft45

Feb.

- a46 

> a50

Month

Out 

Noi

Dec

C

Jar 

Fel 

Mai 

Apr 

Ma, 

Jur 

Ju3 

Aug 

Set

1

alendar year!94C

rater year!940-4l

Mar.

> aSO

 a46

46 

46 

48 

52 

58

52 

56 

S3 

52 

51

46

50 

54

62

S3 

57

Apr.

62 

57 

57 

64 

62

56 

56 

56 

56

61

69 

66 

65 

60 

60

60 

50 

49 

52 

52

52 

54 

55 

59 

60

65 

75 

79 

93 

105

Secondfoot -day a

4,276 

2,393 

1,644

43,446

1,395 

1,325 

1,638 

1,847 

19,238 

23 ,901

s.eoo

4,512 

8,849

73,717

May

108 

113 

129 

147 

149

151 

14S 

180 

244 

320

423 

582 

804 

S92 

749

686

786 

969 

731 

596

630 

830 

1,140 

1,150 

1,130

1,300 

1,150 

892 

731 

692 

692

Maximum

205 

102 

67

1,070

57 

105 

1,300 

1,300 

506 

805 

118

1,300

June

714 

785 

871 

906 

798

714 

755 

676 

640 

568

560 

6S5 

726 

792 

779

898 

1,100 

1,300 

1,090 

1,060

1,070 

. 990 

941 

899

S71

698 

680 

640 

481 

457

Ml Til Bruin

July

506 

445 

415 

398 

384

370 

867 

357 

338 

308

287 

294 

283 

314 

867

246 

241 

231 

264 

281

234 

217 

207 

207 

202

224 

214 

191 

174 

163 

167

99 

53

26

62 

108 

457 

157 

113 

79

-

Aug.

153 

145 

139 

134 

134

134 

141 

163 

163 

205

174 

171 

149 

138 

143

163 

178 

149 

135 

132

129 

139 

134 

125 

157

157 

130 

120 

113 

132 

132

Mean

138 

79.8 

53.0

119

45 

47.3 

49.6 

61.6 

621 

797 

284 

146 

95.0

202

Sept.

118 

111 

106 

111 

106

108 

98 

96 

94 

90

87 

83 

85 

90 

89

S3 

80 

92 

96 

83

79 

99 

111 

99 

100

104 

96 

90 

87

S2

Run-off in 

acre-feet

8,480 

4,760 

3,260

86,170

2,770 

2,630 

3,050 

3,560 

38,160 

47,410 

17,450 

8,950 

8,550

146,800

a No daily gage-height record; discharge computed on basis of mean gage height for period, 

eoorda for atationa on Ducheane River near Tablona and at Duoheane, and temperature records.
GREEN RIVER BASIN 157

Strawberry River at Duchesne, Utah

Location.- Staff gage, lat. 40°10', long. 110°25', In SWiNEi sec. 2, T. 4 s.. R. 5 W., 

uinta meridian, at bridge three-quarters of a mile west of Duchesne and It miles upstream from mouth.

Drainage area.- 1,040 square miles.

Records available.- June 1908 to November 1910, March 1914 to September 1941.

Average discharge.- 27 years (1914-41), 165 second-feet.

Extremes.- Maximum discharge observed during year, 1,520 second-feet May 13 (gage

height, 7.30 feet) from rating curve extended above 800 second-feet; minimum observed, 

42 second-feet Oct. 23, |>ut may have been less during period of ice effect.

1908-10, 1914-41: 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 fair. Gage read twice daily. Diversions above station for irrig'art^', 

tion. Water diverted from Strawberry Valley Reservoir (capacity, 250,000 acre-feet) 

to Great Salt Lake Basin. »

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

A 

5

6 

7

e

9 

10

11 

12 

13 

14 

IS

16 

17 

IS 

19 

SO

21 

22 

23 

84 

25

86 

37 

SS 

29

30 

31

_ Oct. .

7« 

64

61 

48

43

46 

48 

49 

73 

52

49 

48 

48 

47 

46

44 

44 

46 

46 

47

47 

44 

44 

46 

46

47 

72 

58 

51 

48 

47

NOT.

49 

49 

47 

47 

49

49 

51 

51 

4S 

47

51 

59 

51 

58 

56

55 

51 

51 

59 

64

67 

56 

54 

49 

52

51 

4S 

54 

55 

59

Dec.

64 

70 

73 

64 

72

75 

72 

64 

59 

59

52 

 b50

Jan.

> b45

Feb.

 b55

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mai

Apj Ma,

JUI

Jul 

Auj 

Sei

1

alendar year 1940..... .................

 11. ..

Fater year 1940-4

Mar.

100 

121 

94 

87 

73

64 

68 

61 

58 

61

61 

55 

61 

59 

59

61

70 

80 

S5 

91

SO 

S3 

87 

89 

87

76 

76 

7S 

78 

S3 

83

Apr.

94 

98 

91 

89 

94

104 

92 

92 

92 

104

106 

114 

137 

116 

116

118 

US 

114 

110 

110

104 

96 

9S 

110 

US

130 

156 

19S 

244 

329

Secondfoot-days

1,574 

1,687 

1,724

23,807

1,395 

1,640 

2,363 

3,692 

21,341 

10,097 

4,352 

3,356 

1,856

55,376

May

363 

407 

446 

479 

560

651 

695 

744 

902 

1,090

1,200 

1,270 

1,460 

1,400 

1,130

ess

717 

700 

695 

604

488 

434 

4S8 

695 

565

505 

51S 

514 

467 

422 

374

Maximum

75 

67 

75

364

121 

329 

1,460 

750 

396 

414 

108

1,460

June

346 

316 

296 

277 

274

247 

750 

570 

514 

541

52S

496 

462 

446 

410

392 

360 

329 

299 

274

247 

235 

227 

201 

193

1S7 

177 

167 

164 

172

July

ISO 

172 

164 

156 

146

142

137 

396 

159 

144

134 

137 

125 

142 

167

125 

114 

104 

110 

152

112 

104 

96 

94 

96

154 

159 

123 

112 

100 

96

Minimum

43 

47

14

55 

89 

363 

164 

94 

61 

51

-

Aug.

94 

91 

80 

76 

78

76 

377 

23S 

112 

414

137 

108 

100 

S9 

S5

S7 

104 

39 

SO 

75

73 

S5 

75 

73 

68

67 

61 

64 

61 

70 

68

Mean

50.8 

52.9 

55.6

65.0

45 

55 

76.2 

123 

705 

337 

140 

108 

61.9

152

Sept.

66 

56 

56 

56 

59

55 

54 

58 

52

51

52 

51 

51 

75 

64

59 

55 

52 

58 

55

54 

S5 

108 

S7 

7£

65 

64 

62 

64 

64

Hun- off in 

acre-feet

3,120 

3,150 

3,420

47,220

2,770 

3,050 

4,690 

7,320 

43,320 

20,030 

S,630 

6,650 

3,680

109,800

b Stage-discharge relation affected by ice.
158 GREEN RIVER BASIN

Currant Creek near Frultlarid, Utah

Location.- Water-stage recorder, lat. 40°12', long. 110°54 t , in SEi s«c. 21, T. 3 8., 

 R. 9 W., Ulnta meridian, 200 feet downstream from Deep Creek, E50 feet downstream 

from bridge on U. S. Highway 40, and Si miles southwest of Frultland.

Drainage area.- 142 square miles.

Records available.- January 1935 to September 1941.

Extremes.- Maximum discharge during year, 1,040 second-feet July 26 (gage height, 5.85 

feet) from rating curve extended above 150 second-feet; minimum recorded, 4 second-feet 

Mar. 12, may have been less during period of ice effect.

1935-41: Maximum discharge, that of July 26, 1941; minimum recorded, that of Mar. 

12, 1941.

Remarks.- Records excellent except those for period of Ice effect, which are fair.

Currant Creek feeder canal, constructed by the Bureau of Reclamation In 1936, diverts 

water from headwaters of Currant Creek to Strawberry Reservoir, from which It Is 

further diverted through Strawberry tunnel to the Great Basin for Irrigation In the 

Strawberry Valley Project.

Discharge, In second-feet, water year October 1940 to September 1941

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 

SO 

31

Oct.

20 

19 

17 

17 

IS

17 

17 

17 

18 

18

17 

17 

16 

16 

16

16 

16 

16 

16 

16

16 

17 

17 

17 

17

18 

20 

20 

18 

IS 

18

Nov.

17 

17 

18 

19 

17

17 

18 

18 

18 

17

16 

14 

15 

16 

16

18 

19 

19 

19 

18

16 

14 

14 

16 

18

16 

17 

19 

*19 

19

Dec.

18 

18 

18 

17 

16

16 

16 

15 

16 

14

13 

14 

13

12 

10

12 

14 

15 

16 

15

14 

16 

16 

16 

16

15 

16 

16 

16 

17 

16

Jan.

IS 

12 

10 

10 

IS

16 

16 

17 

*16 

16

18 

20 

18 

18 

17

16 

15 

17 

17 

18

19 

20 

18 

19 

18

17 

16 

17 

20 

18 

18

Feb.

16 

15 

15 

15 

16

16 

18 

17 

17 

17

IS 

20 

19 

18 

18

20 

*19 

21 

21 

21

21 

21 

20 

21 

21

16 

16 

19

Month

Oct 

Non 

Dec

C

Jar 

Fel 

Hai 

Apr 

Haj 

JUE 

Jul 

Aug 

Sej

D

alendar year 19410. .....................

ater year 1940-'

Mar.

20 

20 

20 

IS 

20

19 

17 

18 

21 

17

18 

16 

19 

20

16

19 

23 

27 

28 

28

29 

31 

30 

27 

25

25 

25 

27 

28 

28 

31

Apr.

36 

31 

29 

28 

34

SO 

28 

28 

29 

S3

33 

38 

37 

34 

36

36 

34 

28 

28 

28

28 

30 

34 

39 

43

47 

54 

67 

83 

98

Secondfoot-days

SS6 

514 

472

8,274

513 

512 

708 

1,161 

4,840 

2,283 

1,054 

606 

535

13,734

May

92 

104 

123 

1S8 

130

138 

115 

150 

207 

242

242 

278 

308 

265 

210

189 

181 

183 

153 

136

125 

114 

117

120 

112

127 

125 

112 

104 

100 

100

Maximum

20 

19 

18

77

20 

21 

31 

98 

308 

123 

97 

31 

28

308

June

90 

82 

76 

75 

72

70 

12S 

120 

119 

114

111 

104 

96 

89 

83

79 

76 

70 

67 

64

59 

66 

53 

53 

50

48 

46 

46 

46 

46

July

46 

46 

42 

39 

37

34 

45 

45 

35 

32

33 

33

31 

SI 

SO

29 

28 

27 

30 

33

28 

25 

24 

24 

28

9V 

SI 

26 

24 

22 

21

Minimum

16 

14 

10

5

10 

15 

16 

28 

92 

46 

21 

16 

14

10

Aug.

21 

20 

19 

18 

18

18 

20 

21 

21 

31

24 

22 

20 

19

20

22 

21 

20 

18 

18

18 

18 

18 

18 

18

22 

17 

16 

16 

16 

18

Mean

17.3 

17.1 

15.2

22.6

16.6 

18.3 

22.8 

38.7 

166 

76.1 

34 .0 

19.5 

17.8

37.7

Sept.

18 

18 

14 

14 

14

14 

14 

14 

14 

14

14 

14 

14 

19 

19

18 

18 

23 

18 

17

17 

21 

28 

S6 

22

21 

21 

19 

19 

19

Run-off In 

acre-feet

1,060 

1,020 

936

16,410

1,020 

1,020 

1,400 

2,300 

9,600 

4,530 

2,090 

1,200 

1,060

27,240

* Winter discharge measurement made on this day.

Note.- Stage-diaehurge relation affeoted by iee Dec. 11 to Feb. 16.
GREEN RIVER BASIN 159

Uinta River near Neola, Utah

Location.- Water-stage recorder, lat. 40°32', long. 110°04', In SWi.sec. 25, T. 2 N., R. 

2 w., Ulnta meridian, 600 feet downstream from bridge, 1 mile upstream from Pole Creek, 

and 7 miles north of Neola.

Drainage area.- 181 square miles.

Records 1941. available.- July 1921 to September 1927 (fragmentary), September 1929 to September 

Average discharge.- 13 years (1925-26, 1929-41), 163 second-feet.

Extremes.- Maximum discharge during year, 1,760 second-feet June IS (gage height, 3.85 

reet); minimum discharge recorded, 32 second-feet Mar. 10, but may have been less 

during period of Ice effect.

1929-41: Maximum discharge, 2,240 second-feet June 5, 1938 (gage height, 3.33 feet, 

site and datum then In use), from rating curve extended above 1,300 second-feet; minimum recorded, that of Mar. 10, 1941.

Maximum discharge known, more than 3,000 second-feet June 9, 1922 (not determined 

more exactly because of unstable channel conditions).

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

wnicn are fair. Water diverted from Pole Creek and used at Ulnta Power & Light Co.'s 

plant enters river 500 feet above station. Summer flow slightly regulated by several 

small mountain lakes and reservoirs.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

S 

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.

393 

365 

353 

315 

290

259 

245 

245 

259 

245

242 

235 

229 

219 

213

210 

204 

198 

195 

189

186 

183 

178 

172 

170

180 

186 

180 

175 

175 

161

NOT.

154 

156 

159 

156 

139

146 

146 

142 

142 

130

130 

122 

122 

128 

126

124 

122 

128 

119 

119

al!8 

al!7 

117 

111 

115

106 

106 

*107 

111 

111

Dec.

109 

106 

102 

104 

104

100 

93 

100 

100 

93

88 

> b80

Jan.

{*)

b70

Feb.

 b64

*65 

65 

65

65 

65 

64 

65 

65

60 

60 

64

Month

Oct 

MOT 

Dec

C

Jar 

Fet 

Mai 

Api

S

Ju] 

AUJ 

Sei

»

alendar year 1940..... .................

> 

Fater year 1940-4

Mar.

63 

68 

65 

62 

64

62 

61 

60 

64 

56

62 

53 

61 

62 

58

62 

64 

68 

70 

70

70 

74 

73 

70 

69

63 

67 

70 

70 

69 

72

Apr.

77 

73 

70 

69 

76

70 

67 

66 

63 

73

72 

79 

76 

73 

73

74 

65 

65 

69 

68

68

69 

72 

74 

73

85 

87 

63 

91 

104

Secondfoot-days

7,049 

3,823 

2,704

48,507

2,170 

1,791 

2,027 

2,231 

19,004 

28,571 

14,080 

9,004 

5,760

98,214

May

106 

115 

137 

154 

172

189 

189 

204 

265 

338

419 

560 

846 

958 

774

60S 

641 

823 

647 

529

565 

309 

1,090 

1,160 

1,090

1,170 

1,180 

902 

788 

767 

809

Maximum

393 

159 

109

575

74 

104 

1,180 

1,520 

591 

389 

235

1,520

June

846 

870 

1,010 

1,100 

910

809 

7S1 

689 

659 

570

565 

618 

714 

823 

862

1,090 

1,320 

1,520 

1,330 

1,300

1,330 

1,280 

1,250 

1,340 

1,280

982 

638 

702 

618 

565

July

560 

554 

586 

580 

591

560 

565 

544 

519 

524

524 

500 

46S 

436 

463

427 

402 

389 

454 

505

423 

397 

377 

361 

377

397 

365 

334 

311 

301 

286

Minimum

161 

106

54

56 

65 

106 

565 

286 

242 

159

56

Aug.

272 

259 

252 

242 

245

263 

319 

389 

373 

345

353 

330 

304 

286 

293

308 

293 

276 

259 

255

269 

293 

272 

272 

336

323 

2^76 

252 

242 

272 

259

Mean

227 

127 

87.2

133

70.0 

64.0 

65.4 

74.4 

613 

952 

454 

290 

192

269

Sept.

235 

226 

232 

232 

213

207 

207 

195 

1S9 

183

178 

170 

178 

189 

178

170 

161 

170 

198 

167

159 

180 

207 

192 

192

204 

204 

183 

186 

175

Run-off In, 

acre-feet

13,980 

7,580 

5,360

96,200

4,300 

3,550 

4,020 

4,430 

37,690 

56,670 

27,930 

17,860 

11,420

194,800

* Winter discharge measurement made this day. 

a Ho gage-height record; discharge Interpolated, 

b Stage-discharge relation affected by Ice.
160 GREEN RIVER BASIN

Whiteroeks River near Whiteroeks, Utah

Location.- Water-stage recorder, lat. 40°34', long. 109°56', In SWi sec. 18, T. 2 N., R. 

l E., Ulnta meridian, 25 feet downstream from bridge, three-quarters of a mile upstream from heading of United States Whlterocks and Farm Creek canals, and 6* miles 

north of Whlterocks.

Drainage area.- 115 square miles.

Records available.- August 1921 to September 1928, February 1930 to September 1941. 

septemoer 1899 to August 1904, 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.- 17 years (1899-1903, 1908-10, 1930-41), 120 second-feet.

Extremes.- Haxlmum discharge during year, 1,270 second-feet May 23 (gage height, 3.98 

reet}; minimum recorded, 20 second-feet Mar. 10, but may have been less during periods 

of ice effect.

1921-28; 1930-41: Maximum discharge, 3,750 second-feet June 21, 1922, from rating 

curve extended above 1,700 second-feet; minimum recorded, 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. Flow 

sugntly regulated by storage in small mountain lakes.

Rating tables, water year 1940-41, except periods of lee effeet (gage height, in feet, and

discharge, in second-feet) 

(Shifting-control method used Hay 11-22}

Dot. 1 to Hay 22 May 23 to Sept. SO

1.10 33 2.20 21S 1.60 99 . 2.70 453 

1.20 41 2.40 281 1.80 144 3.00 605 

1.40 60 2.60 S55 2.00 198 3.20 720 

1.60 86 2.80 440 2.2O 260 S.50 91O 

l.SO 121 3.00 535 2.50 368 3.70 1.O5O 

2.00 166 3 ' 30 TO0

Discharge. In second-feet, water year October 1940 to September 1941

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 

SO 

SI

Oet.

245

230 

227 

196 

180

17S 

172 

165 

176 

165

158 

158 

158 

151 

147

142 

136 

132 

125 

121

117 

115 

112 

108 

106

112

117 

113 

106 

106 

97

HOY.

92 

92 

97 

97 

91

91 

92 

89 

88 

S2

83 

76 

b76 

b82 

b81

SO 

78 

75 

73 

72

72 

71 

b68 

b64 

b66

b62 

b62 

*b63 

b66

b67

Dec.

60 

59 

59 

59 

58

57 

56 

56 

56 

61

 b42

i

Jan.

>

(») 

. b35

' 35

35 

36 

33 

b34 

b34 

b34

Feb.

32 

31 

29 

2S

28

30 

51 

32 

33 

33

33 

33 

32 

32 

32

32 

32 

*32 

32 

32

32 

32 

32 

32 

32

30

bSo

b32

Month

dot 

HOT

Dec

0

Jan 

Fet 

Mar 

Apr 

Maj 

JUE 

Jul 

Aug 

Sep

VI

alendar year 1940........... ...........

ater year 1940-4

Mar.

32 

34 

34

34 

33

33 

32 

32 

30 

33

32 

29 

35 

31 

34

31 

32 

35 

36 

36

35 

37 

57 

35 

34

34 

35 

37 

3V 

37 

39

Apr.

43 

39 

38 

35 

42

37 

35 

35

37 

41

39 

44 

43 

39 

39

41 

36 

40 

39 

36

35 

37 

40 

42 

43

50 

52 

50 

54 

62

Seoondfoot-days

4,570 

2,348 

1,452

27,927

1,080 

881 

1,055 

1,243 

16,198 

17,883 

6,543 

3,810 

2,962

60,025

May

66 

73 

91 

102 

121

132 

132 

154 

190 

256

359 

525 

772 

S14 

634

500 

550 

694 

530 

426

472 

700 

1,070 

1,100 

959

1,050 

931 

684 

664 

696 

762

Maximum

245 

97 

60

344

33 

39 

62 

1,100 

S40 

380 

160 

132

1,100

June

774 

7SO 

828 

S10 

649

594 

622 

556 

620 

486

491 

505 

625 

550 

583

720 

7SO 

840 

708 

678

678 

632 

58S 

594 

566

458 

401 

349 

319 

305

July

280 

291 

380 

308

280

267 

270 

270 

247 

228

219 

222

213 

201 

187

178 

176 

170 

204 

210

176 

160 

152

154 

167

204 

1S1 

154 

139 

130 

125

Aug.

120 

114 

110 

105 

112

130 

139 

154 

160 

160

139 

112 

105 

99 

99

107 

112 

105 

99 

107

125 

134 

142 

137 

162

142

120 

112 

105 

125 

US

Minimum Mean

97 147 

62 78.3 

46.8

83 76.3

34.8 

28 31.5 

29 34.0 

35 41.4 

66 523 

305 690 

125 211 

99 123 

75 9S.7

28 164

Sept.

110 

101 

105 

112 

101

95 

90 

86 

86 

S2

78 

78 

105 

118 

95

SO 

75 

90 

101 

88

80 

95 

112 

107 

116

132 

125 

107 

107 

105

Run-off in 

acre-feet

9,060 

4,660 

2,880

55,410

2,140 

' 1,750 

2,090 

2,470 

32.130 

35,470 

12,930 

7,660 

5,880

119,100

e Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
OREEN RIVER BASIN 161

White River near Meeker, Colo.

Location.- Water-stage recorder, lat. 40°02', long. 107°52', In sec. 30, T. 1 N., R. 93 

w., i mile upstream from Curtls Creek and 3| miles east of Meeker.

Drainage area.- 762 square miles.

Records available.- May 1901 to October 1906 and May 1910 to November 1913, at site 2| 

miles downstream, and October 1933 to September 1941 In reports of U. S. Geological 

Survey. May 1901 to October 1906, and May 1910 to September 1941 In reports of State 

engineer.

Average discharge.- 36 years, 642 second-feet.

Extremes.- Maximum discharge during year, 4,100 second-feet May 14 (gage height, 4.07 

reet); minimum dally, 822 second-feet Jan. 2, Feb. 2.

1901-6, 1910-41: Maximum dally discharge, 6,070 second-feet June 16, 1921; minimum 

dally, 112 second-feet July 17, 1934.

Remarks.- Records excellent. Diversions above station for Irrigation.

Rating table, water year 1940-41 (gage height. In feet, and discharge, In second-feet) 

(Shifting-control method used Oct. 1-8 and Oct. 28 to Hov. 30)

1.1 210

1.3 290

1.6 445

2.0 700

2.3 940

2.7 1,370

3.0 1,760

3.4 2,430

3.9 3,660

Discharge, In second-feet, water year October 1940 to September 1941

Bay

1 

2 

3 

4 

5

6

7

e

9 

10

11

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29

30 

31

Oct.

385 

355 

545 

330 

390

428 

390 

380

418 

483

401 

385 

375 

370 

365

360 

360 

360 

355 

355

350 

345 

345

340 

340

345 

380 

355

340 

350 

350

Hov.

335 

330 

340 

355

305

340 

340 

335 

340 

335

300 

288 

254 

258 

310

330 

345 

345 

355

340

335 

335

310 

295 

300

315 

274 

320 

335 

335

Dec.

330 

325 

315 

310 

300

310 

310 

300 

295 

300

282 

295 

278 

230 

238

262 

305 

325 

286 

270

278 

285 

295

305 

305

282 

270 

300 

295 

295 

290

Jan.

258 

222 

230 

242 

258

290 

266 

300 

290 

274

274 

295 

300 

278 

295

266 

276 

262 

266

274

290

278 

288 

274 

286

262 

278 

258 

266 

290 

288

Feb.

262 

222

838 

258 

266

278 

274 

258 

290 

286

282 

295 

286 

274 

274

282 

866 

878 

282 

274

274 

278 

278 

278

2S6

266 

238 

262

Month

Ool 

Hoi 

Dec

<

Jar 

Pel 

Hai

AP1 

Maj

Jut 

JvU 

Au{

ss, 

1

alendar year 1940. .....................

fater year 1940-'

Mar.

890 

2S2 

288 

266 

274

274 

262

258 

278 

250

274 

238 

278 

286 

270

866

276 

300 

320 

340

350

385 

483 

406 

370

330 

340 

350 

360 

360 

370

Apr.

401 

365 

370 

365 

380

401 

370 

350 

345 

385

385 

375 

406 

396 

385

375 

380 

355 

345 

320

330 

355 

370 

401 

434

481 

565 

604 

672 

735

Secondfoot -days

11,370 

9,628 

9,067

182,766

8,464 

7,585 

9,610 

12,401 

86,722 

52,860 

17,556 

11,140 

10,805

226,608

Hay

842 

940 

1,170 

1,560 

1,430

1,320 

1,050 

1,090 

1,530 

1,960

2,010 

2,060 

2,650 

3,460 

3,150

2,610 

2,610 

2,880 

2,930 

2,320

2,050 

2,280 

2,440 

2,540 

2,580

2,560 

2,930 

2,690 

2,500 

2,280 

2,300

Maximum

428 

355

330

2,540

300 

295 

423 

735 

3,460 

2,260 

904 

423 

481

3,460

June

2,260 

2,150 

2,140 

2,060 

2,050

2,080 

1,960 

2,030 

1,720 

1,590

1,420 

1,260 

1,390 

1,470 

1,450

1,520 

1,660 

1,860 

2,050 

2,150

2,140 

2,050 

1,870 

1,730 

1,630

1,620 

1,490 

1,320 

1,130 

1,010

July

904 

86S 

786 

735 

714

686 

672 

651 

630 

617

57S 

591 

584 

559 

529

. 517 

523 

529 

499 

596

553 

493 

451 

440 

434

423 

418 

423 

406 

390 

355

Minimum

330 

854 

230

202

222 

222 

238

320 

842 

1,010 

355 

305 

310

222

Aug.

345 

325

320 

315 

305

310 

330 

335 

360 

401

406 

380 

360 

350 

350

406 

423 

423 

396 

390

380 

375 

375 

360 

355

355 

345 

335 

340 

350 

340

Mean

367 

321 

292

499

273 

271 

310 

413 

2,152 

1,742 

566 

359 

360

621

Sept.

345 

345 

325 

325 

320

310 

310 

335 

330 

330

385 

330 

350

481 

426

406 

375 

375 

380 

355

355 

365 

385 

390

385

375 

365 

365

370 

370

Run-off In 

acre-feet

22,550 

19,100 

17,980

362,500

16,790 

15,040 

19,060 

24,600 

132,300 

103,700 

34,880 

22,100 

21,430

449,500
162 GREEN RIVER BASIN 

White River near Watson, Utah.

Location.- Water-stage recorder, lat. 39°58', long. 109°10', in sec. 2, T. 10 8., R. 24 

E., Salt Lake meridian, Just downstream from Evacuation Creek and 7 miles north of 

Watson.

Drainage area.- 4,020 square miles.

Records available.- April to October 1906, published as White River near Dragon, Utah and 

octooer 1933 to September 1941 In reports of U. S. Geological Survey. April 1923 to 

September 1941 In reports of State engineer of Colorado.

Average discharge.- 18 years, 754 second-feet.

Extremes.- Maximum discharge during year, 4,210 second-feet May 15 (gage height, 4.63 feet); 

minimum dally, 112 second-feet Dec. 14.

1906, 1923-41: Maximum dally discharge, 8,160 second-feet July 15, 1929; minimum 

discharge, 52 second-feet July 19, 20, 1934.

Remarks.- Records good except those for period of ice effect, which are fair, 

atiove station for Irrigation.

Diversions

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

Z

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

1,600

981

564

515

564

726

600

520

476

498

510

466

427

405

394

388

383

383

378

372

361

356

356

356

350

350

510

416

3S8

378

372

Nov.

383

378

372

388

416

394

366

383

394

*405

394

378

340

340

290

275

345

394

405

405

394

383

366

378

366

345

350

325

356

383

-

Dec.

410

394

1372

350

330

325

325

320

310

305

310

330 230-

112

150

210

300

350

300

250

260

270

290

310

320

300

250

270

310

300

300

Jan.

280

260

220

230

260

300

310

300

310

300

300

320

320

310

310

320

300

*293

295

305

310

315

320

300

305

300

290

300

280

310

300

Feb.

280

270

270

290

310

340

370

350

320

350

390

440

410

410

 425

415

400

410

450

460

450

450

460

470

480

450

520

564

-

_

-

Month

Calendar year 1940 ......................

April. ....................................

May.......................................

July. .....................................

Water year 1940-41.. ....................

Mar.

644

950

1,140

810

599

494

462

420

396

396

366

342

348

*330

348

342

342

378

501

578

578

515

494

585

599

508

468

468

468

474

487

Apr.

508

571

557

522

536

522

564

557

501

468

501

543

564

620

599

550

557

564

536

508

474

456

456

494

536

578

628

709

830

920

-

Secondfoot-days

15,343

11,091

9,163

196,136

9

1i7« 9 ± to 

11,204

15,830

16,929

59)320

20,336 

16,527

14,462

878,078

May

990

1,100

1,170

1,460

1,850

2,250

2,170

1,990

1,840

2,120

2,550

2,680

3,090

3,430

3,930

3,820

3,130

2,840

2,950

3,220

2,840

2,560

2,590

3,660

2,740

2,810

2,850

2,920

2,930

2,710

2,510

Maximum

1,600

416

410

2,210

320

564

1,140

920

3,930

2,570

1,200

1,350

1,120

3,930

June

2,430

2,390

2,270

2,240

2,200

2,300

2,380

2,500

8,570

2,230

2,020

1,820

1,630

1,640

1,700

1,690

1,720

1,790

1,890

2.030

2,110

2,180

2,070

1,950

1,830

1,750

1,700

1,580

1,450

1,320

-

July

1.200

1,080

980

900

820

790

745

754

700

676

668

628

628

840

652

599

571

550

571

578

599

613

564

528

515

529

474

432

402

384

372

Minimum

350

275

112

112

nne\ &£\i

270

330

456

QQft V9V

1,320

372

300

384

112

Aug.

354

342

318

312

312

300

324

462

692

1,300

644

536

487

420

402

460

1,350

810

620

5S7

529

550

543

550

529

515

501

468

438

426

456

Mean

495

370

296

536

QOA AVV

400

511

564

2,539

1,977

656

533

482

762

Sept.

426

414

414

408

402

396

390

384

390

408

396

390

390

692

644

543

480

462

426

390

384

1,100

1,120

613

444

408

390

384

384

390

~

Run-off in 

acre-feet

30,430

22,000

18,170

379,000

±QI i A ±WJ ion 

22 * 820

31,400

33,580

156,100

117,700

40,340

32,780

28,680

551,600

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected by ice Dec. 15 to Feb. 27.
GREEN RIVER BASIN !63 

Plceance Creek near Rio Blanco, Colo.

Location.- Staff gage, lat. 39°48', long. 108°06', In Ni sec. 18, T. 3 S., R. 95 W., 

just aovmstream from Story Gulch and 9 miles northwest of Rio Blanco. Altitude of 

gage, 6,950 feet (by barometer).

Drainage area.- 153 square miles.

Records available.- March to September 1941.

Extremes.- Maximum discharge observed during period, 158 second-feet Apr. 12 (gage height, 

4.16 feet), from rating curve extended above 45 second-feet; minimum dally, 2.5 secondfeet Mar. 1-17.

Remarks. Records poor. Diversions above station for Irrigation.

Cooperation.- Gage-height record and results of discharge measurements Mar. 1 to June 30 

ruralsned by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4

5

6 

7 

8 

9 

10

11 

12 

15 

14 

16

16 

17 

18 

19 

80

21 

22 

25 

24 

26

26 

27 

28 

29 

30 

31

Oet. HOT. Dec. Jan. Feb.

Month

Oet 

HOT

Dec

C

Jar 

Pet 

Bai 

Api 

Maj 

Jur 

JuJ 

Aug 

Sej

1

alendar year

hfl perlc

liar.

2.5 

2.5 

2.5 

2.5 

2.5

2.5 

2.5 

2.5 

2.5 

2.5

,2.5 

2.5 

2.5 

3.5 

2.5

2.5 

2.5 

11 

55

56

39 

28 

14 

7.7 

7.9

7.7 

10 

19 

22 

26 

44

Apr.

40 

58 

S3 

54 

SO

42

27 

28 

58 

49

51 

115 

73 

62 

61

63 

59 

50 

44

40

58 

47 

58 

59 

55

63

76 

70 

83 

83

Secondfoot-days

557.8 

1,611 

2,021 

562 

251.4 

275.0 

117.2

-

May

80 

75 

65 

115 

95

82 

66 

68 

75 

78

95 

102 

110 

90 

80

72 

65 

60 

67 

56

51 

50 

46 

42 

41

58 

40 

38 

30 

26 

21

Maximum

44

115 

113 

36 

10 

28 

4.5

-

June

22 

22 

22 

23 

22

20 

22 

56 

24 

24

21 

20

19 

20 

21

19 

19 

17 

14 

15

3.6

16 

16 

16 

16

16 

12 

11 

11 

10

July

S.6 

8.8 

8.8 

9.1 

9.1

8.8 

10 

10 

9.1 

8.8

8.5 

8.8 

S.8 

8.8 

8.5

8.1 

7.9 

7.9 

7.9 

7.7

7.7 

7.5 

7.5 

7.7 

7.5

7.5 

6.9 

6.7 

6.5 

6.1 

6.5

Minimum

2.5 

27 

21 

10 

6.1 

4.4 

5.4

-

Aug.

6.5 

6.1 

6.1 

6.5 

6.5

6.5 

6,5

6.7 

16 

28

24

20 

17 

IS 

9.7

8.3 

7.9 

6.5 

6.5 

6.1

5.7 

8.1 

6.7 

5.9 

5.5

5.1 

4.5 

4.4 

4.7 

4.4 

4.4

Mean

10.9 

55.7 

65.2 

18.7 

8.11 

8.81 

5.91

-

Sept.

.4 

.4 

.4 

.4

.0

.0 

.5 

.2 

.4 

.4

.0 

.8 

.4 

.0 

.0

4.3

S.9 

5.6 

S.9

5.8

S.9 

5.6 

S.8 

5.4 

S.6

5.4 

S.4 

5.6 

S.4 

5.4

Run-off In 

acre-feet

670 

5,200 

4,010 

1,110 

499 

S41 

832

10,260
164 QREEN RIVER BASIN 

Price River above Scofleld Reservoir, near Scofield, Utah

Location.- Water-stage recorder, lat. 39°46', long. lll°ll', in SEi sec. 18, T. 12 S.,

 R. 7 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.- 62 square miles.

Records available.- June 1931 to September 1932 (fragmentary), October 1938 to September

1941.

Extremes.- Maximum discharge during year, 645 second-feet May 13 (gage height, 3.11 feet);

 minimum recorded, 6 second-feet Nov. 6, but was undoubtedly less during period of ice

1931-32, 1938-41: Maximum discharge, 673 second-feet May 19, 1932; minimum 

recorded, 3 second-feet Sept. 10-30, 1932, but may have been less during periods of 

ice effect.

Remarks.- Records good except those for period of no gage-height record or period of ice

 effect, which are fair. Small transmountaln diversions at headwaters for irrigation 

in the sevier River Basin.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9, 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

9 

9 

8 

8 

8

8 

S 

7 

7 

9

9 

8 

8 

S 

7

7 

7 

7 

7 

7

7 

7 

7 

7 

7

7 

8 

8 

9 

8 

9

Nov.

8 

8 

8 

9 

8

8 

10 

9 

9 

8

8 

b7 

b7

7

Dec.

7

Jan.

> 6

Feb.

7

Month

Oct 

No\ 

Dec

C

Jar 

Pet 

Bai 

API 

Maj 

Jur 

JuJ 

Auj 

Sej

1

y..... .................................

rater year 1940-4]_

liar.

8 

10

Apr.

12

! 20 

25

SO 

38 

48 

63 

82

Secondfoot-daye

240 

226 

217

14,566

186 

196 

280 

606 

11,388 

4,179 

1,091 

534 

433

19,576

May

94 

111 

135 

157 

169

188 

204 

268 

345 

412

480 

635 

598 

563 

512

471 

484 

521 

476 

391

379 

399 

462 

450 

437

471 

424 

379 

327 

290 

256

Maximum

9 

10

480

82 

598 

242 

55 

27 

21

598

June

242 

223 

206 

192 

177

169 

234 

221 

209 

195

179 

165 

163 

171 

155

136 

126 

118 

107 

98

90 

S4 

79 

76 

68

65 

62 

59 

56 

64

July

55 

52 

48 

45 

42

40 

39 

39 

39 

37

36 

36 

36 

34 

32

31 

SO 

30 

34 

34

30 

29 

27 

27 

28

36 

37 

34 

27 

24 

23

Minimum

7

-

94 

64 

23 

10 

10

-

Aug.

22 

19 

18 

18 

19

20 

21 

21 

22 

23

27 

22 

20 

19 

20

23 

22 

19 

16 

14

14 

14 

13 

12 

12

11 

10 

10 

10 

11 

12

Mean

7.7 

7.5 

7.0

39.8

6.0 

7.0 

9.0 

20.2 

367 

139 

35.2 

17.2 

14.4

53.6

Sept.

11 

10 

12 

15 

14

14 

14 

14 

15 

16

17 

16 

18 

21 

19

17 

15 

14 

12 

10

10 

16 

19 

17 

15

14 

12 

12 

12 

12

Run-off In 

acre-feet

476 

448 

430

28,890

369 

389 

566 

1,200 

22,590 

8,290 

2,180 

1,060 

859

38,830

b Stage-discharge relation affected by Ice.

Koto.- Mo gage-height record Mov. 14 to Apr. 25j discharge computed on basis of records for 

mtington Creek near Buntlngton and Cottonwood Oreek near Orangevilla.
GREEK RIVER BASIN 165

Price River near Scofield, Utah

Location.- Water-stage recorder and concrete control, lat. 39°47', long. 111°07', in SEi 

sec. 10, T. 12 S., R. 7 E., 1,000 feet downstream from Scofield Reservoir, 5 miles 

northeast of Scofield, and 9 miles upstream from White River.

Drainage area.- 163 square miles.

Records available.- November 1917 to September 1921, June to September 1925, April 1926 

to September 1931, October 1938 to September 1941.

Extremes.- Maximum discharge during year, 585 second-feet (regulated), May 25 (gage 

 height, 4.24 feet); practically no flow at times when reservoir gates were closed.

1917-20, 1926-31, 1938-41: Maximum discharge, 1,000 second-feet on or about May 

24, 1920 (gage height, 10.4 feet from high water mark, site and datum then In use) 

from rating curve extended above 500 second-feet; practically no flow at times when 

reservoir gates were closed.

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

fair. Flow completely regulated by Scofield Reservoir (capacity, 42,000 acre-feet). 

Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941_

Day

1 

2 

3 

4 

6

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

80

81 

82 

83 

84 

86

86 

87 

88 

89 

30 

31

Oct.

. 2

HOT.

> 2

Dee.

' 2

Jan.

> 2

Feb.

' 2

Month

Oet 

Hov 

Dec

C

Jan 

Feb 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

W

alendar year 19'to ....................

ater year 1940-4]

Mar.

2

*2

2

Apr.

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

Secondfoot -days

62 

60 

62

18,324

62 

66 

62 

90 

7,227 

4,901 

4,115 

3,610 

2,427

22,734

May

3

3 

3 

3 

3

3 

3 

2 

2 

2

3 

3 

4 

191 

466

424 

398 

376 

413 

334

244 

273 

397 

663 

488

§75 

{J58 

532 

368 

300 

300

Maximum

_

232

3 

576 

333 

170 

175 

138

575

June

250 

99 

118 

106 

106

224

204 

324 

333 

333

333 

249 

7 

60 

158

224 

226 

19S 

114 

92

96 

95 

95 

95 

87

94 

109 

160 

168 

167

July

166 

163 

167 

167 

166

166 

154 

166 

108 

78

76 

141 

170 

170 

168

154 

116 

115 

115 

114

113 

113 

111 

111 

110

110 

110 

109 

137 

153 

153

Minimum

~

-

3 

2 

7 

75 

22 

16

-

Aug.

158 

128 

126 

126 

126

167 

176 

150 

76 

66

22

33 

108 

136 

134

134 

134 

133 

110 

100

100 

99 

99 

100 

100

119 

166 

154 

154 

132 

86

Mean

2 

Z 

2

60.1

2 

2 

2 

3 

233 

163 

133 

116 

80.9

62.3

Sept.

8.4 

85 

89 

105 

113

138 

137 

136 

134 

133

133 

133 

132 

131 

117

72 

71 

71 

71 

60

43 

43 

43 

43 

31

16 

16 

16 

16 

16

Run-off In 

acre-feet

123 

119

36,350

123 

111 

123 

179 

14,330 

9,720 

3,160 

7,160 

4,810

45,080

* Discharge measurement made on this day. 

Hote.- Ho gage-height record Oct. 1 to Apr. 26; discharge computed on basis of three discharge 

easurements (outlet gates at reservoir closed).
166 GREEN RIVER BASIN 

Price River near Helner, Utah

Location.- Water-stage recorder, lat. 39°43'05", long. 110°51'55", In SWi sec. 1, T. 13

 5., R. 9 E., two-thirds of a mile north of Helner and three-quarters of a mile downstream from Willow Creek.

Records available.- June 1934 to September 1941.

Extremes (regulated).- Maximum discharge during year, 2,280 second-feet Sept. 13 (gage

 height, 4.75 feet, from rating curve extended above 800 second-feet on basis of 

slope-area determinations at gage heights 6.16 and 7.98 feet; minimum dally, 4 

second-feet Dec. 14, 15, Jan. 2-5, during ice affected periods.

1934-41: 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 during period 

Sept. 1-10, 1934.

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

wnicn are fair. Station Is above diversions from main stream for irrigation. Several 

small diversions from tributaries upstream for Irrigation and municipal supply. Flow 

regulated by Scofleld Reservoir (capacity, 42,000 acre-feet).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

go

23 

84 

85

E6 

27 

28

sa

30 

31

Oct.

a!5 

a 12 

a!2 

all 

alO

alO 

alO 

44 

26 

16

14 

12 

12 

11

10

10 

9 

9 

9 

9

9 

S 

8 

9 

9

73 

2S 

20 

16 

14 

12

Nov.

11 

12 

13 

13 

11

11 

13 

12 

12 

12

b!2 

bll 

blO 

b9 

*t>9

blO 

bll 

13 

13 

b!3

13 

b!2

bll 

b9 

bB

b9 

blO 

11 

«bll 

bll

Dec.

9 

9 

blO 

blO 

bll

blO 

blO 

bll 

bll 

blO

b9 

bS 

b6 

b4 

b4

b5 

b6 

b7 

7 

7

7 

b7 

b7 

b7 

b6

b6 

b7 

bS 

8 

S

be

Jan.

b7 

b4 

b4 

b4 

b4

b5 

b6 

b7 

*t>7 

b7

7 

S 

8 

7 

b7

b7 

b7 

b6 

b6 

b7

S 

S 

bS 

b9 

b9

08

bS 

b9 

10 

10 

10

Feb.

b9 

b8 

b7 

b7 

b7

b8 

b9 

blO 

bll 

12

13 

*14 

b!4 

17 

18

20 

22 

26 

26 

29

40

53 

58 

53 

51

38 

38 

48

Month

Oct 

ROM

Dec

C

Jan 

Pel: 

Mar

Apr

Jui 

Jiil 

Aug

8ep

Hfeter year 1940-4

Mar.

48 

3S 

32 

96 

24

23 

24 

29 

30 

22

23 

20 

22 

23 

IS

36 

80 

119 

125 

125

a!25 

a!40 

allO 

a85 

aSO

aso

a85 

a90 

a98 

a92 

a96

Apr.

allO 

alOO 

a 90 

aSO

71

66 

64 

74 

77 

S7

S7 

124 

109 

107 

105

113 

101 

87 

94 

90

92 

S7 

99 

128 

144

163 

197 

820 

263 

293

Secondfoot-days

477 

S36

243

86,909

222

666 

1,962 

3,522 

21,226 

10,679 

6,27S 

4,727 

3,613

53,951

May

324 

361 

405 

434 

475

502 

535 

565 

632 

692

710 

728 

710 

680 

1,050

947 

S91 

835 

877 

794

632 

615 

674 

891 

S14

933

877 

82S 

710 

570 

535

Maximum

73 

13 

11

520

10 

58 

140 

293 

1,050 

595 

2S9 

220 

391

1,050

June

a 460 

a 300 

a250 

a250 

a250

a 400 

a400 

502 

575 

575

580 

595 

327 

296 

361

457 

452 

434 

331 

2S9

279 

266 

257 

253 

23S

232 

235 

263 

293 

289

July

2S9 

282 

266 

860

253

250

263 

260 

247 

a!75

a!50 

a200 

a250 

a210 

a200

a!90 

171 

15S 

171 

168

158 

156 

151 

153 

171

179 

176 

161 

179 

192 

189

HtnlmviiTi

S 

8 

4

4

4 

7 

18 

64 

324

oqro

150 

53 

40

4

Aug.

1S6 

176 

151 

153 

151

171 

220 

200 

121 

107

74 

53 

78 

149 

156

1S4 

186 

166 

156 

126

151 

137 

126 

121 

119

124 

171 

173 

291 

a£OO 

alSO

Mean

15.4 

11.2 

7.S

73.5

7.2 

83. S 

63.3 

117 

685 

356 

203 

152 

120

148

Sept.

allO 

allO 

a!20 

141 

alSO

al&O 

153 

151 

149 

149

149 

146 

391 

186 

168

151 

126 

109 

97 

94

74 

77 

90 

78 

74

51 

45 

42 

42 

40

Run-off In 

acre-feet

946 

666 

482

53,360

440 

1,320 

3,890 

6,990 

42,100 

21,180 

12,450 

9,380 

7,170

107,000

* Winter discharge measurement made on thla day.

a No gage-height record] discharge computed on basis of records for station near Scofleld and for 

Huntington Creek near Huntington, and Cottonwood Creek near Orangeville. 

b Stage-discharge relation affected by Ice.
GREEN RIVER BASIN 167

Huntington Creek near Huntington, Utah

Location.- Water-stage recorder, lat. 39°22'15", long. 111003'45", in SEi sec. 6, T. 17 

&., R. 8 E., 1 mile upstream from Fish Creek and 7 miles northwest of Huntington.

Drainage area.- 188 square miles.

Records available.- May 1909 to September 1917, October 1918 to November 1920 (fragmentary), April 1931 to September 1941.

Average discharge.- 26 years (1910-17, 1931-39, 1930-41), 98.9 second-feet.

Extremes.- Maximum discharge during year, 1,050 second-feet May 12 (gage height, 4.30 

feet); minimum recorded, 11 second-feet Nov. 5, but may have been less during periods 

of ice effect.

1909-41: Maximum discharge, 3,500 second-feet Aug. 2 or 3, 1930 (gage height, 7.5 

feet, from floodmark), from rating curve extended above 600 second-feet; minimum re- . 

corded, 2 second-feet Nov. 5, 1926, during period of Ice effect, but may have been lower during other periods of Ice effect.

Remarks.- Records good except those for periods of Ice effect, which are fair. Small 

diversions above station for Irrigation. Flow slightly regulated by small reservoirs 

above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

8 

S 

4 

5

6 

7 

8 

9 

10

11

12 

IS 

14 

15

16 

17 

18 

19 

80

81 

22 

25 

84 

85

86

87 

28 

89 

SO 

SI

Oct.

32

31 

SI 

SI 

34

34 

SI 

31 

37 

34

38 

31 

30 

30 

29

89 

88 

88 

88 

89

88 

8S 

88 

83 

88

46 

36 

32 

89 

32 

88

NOT.

28 

29 

30 

2S 

22

30 

SI 

28 

28 

25

86 

88 

b28 

b86 

«26

b86 

b87 

88 

88 

28

85 

80 

b!9 

b!8 

b!7

bl9 

b88 

b85 

b87 

«30

Dec.

' b88 

> b26

Jan.

> b24

(*) 

85

' b84

Feb.

b24 

b24 

b83 

bSO 

b20

b80 

b21 

b22 

b24 

b86

*S8 

88 

27 

29 

29

30 

88 

30 

89 

28

89 

30 

89 

30 

89

88 

26 

89

Month

Dot 

Ho\ 

Dec

C

Jar 

Fel 

Hai 

API 

Maj 

Jui 

JU] 

Aug 

Sej

H

alendar year 1940... ...................

ater year 1940-4

Mar.

SI 

SI 

SO 

89

SI

SO 

28 

87 

31 

23

26 

83 

29 

30 

26

28 

30 

38 

S3 

S3

31 

38 

S3 

30 

89

89 

30 

38 

34 

33 

34

Apr.

37 

34 

S3 

32 

37

30 

32 

33 

34 

36

35 

43 

35 

34 

35

40 

35 

35 

34 

34

35 

37 

42 

45 

43

48 

54 

63 

88 

94

Seoondfoot-days

963 

772 

826

28,480

745 

740 

931 

1,241 

16,286 

11,128 

4,970 

8,405 

8,097

43,098

May

104 

119 

165 

809 

209

260 

315 

432 

560 

636

702 

828 

870 

784 

672

620 

666 

652 

568 

4ff7

454 

504 

624 

656 

660

716 

689 

604 

544 

508 

489

Maximum

46 

31

558

30

34 

94 

870 

576 

217 

188 

88

870

June

481 

485 

473 

462 

458

458 

576 

485 

447 

396

340 

331 

351 

378 

396

408 

417 

402 

378 

361

340 

318 

302 

299 

865

2S9 

234 

831 

883 

194

July

177 

167 

160 

149 

143

139 

160 

194 

199 

196

801 

217 

209 

191 

191

165 

139 

133 

154 

154

143 

141 

145 

143 

154

165 

149 

139 

135 

127 

91

Minimum

88

17

17

80 

85 

30 

104 

194 

91 

47 

48

17

Aug.

86 

84 

82 

82 

82

96 

106 

99 

104 

128

112 

60 

55 

52 

60

61 

55 

54 

50 

48

47 

52 

84 

84 

84

83 

82 

80 

82 

88 

83

Mean

31.1 

25.7 

86.6

77.8

24.0 

86.4 

30.0 

41.4 

525 

371 

160 

77.6 

69.9

118

Sept.

80 

77 

80 

82 

76

73 

71 

73 

73 

76

74 

73 

80 

88

74

71 

71 

73 

68 

64

60 

77 

78 

67 

66

60 

53 

49 

48 

48

Run-off in 

acre-feet

1,910 

1,530 

1,640

56,490

1,480 

1,470 

1,850 

8,460 

32,300 

88,060 

9,860 

4,770 

4.160

85,490

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by Ice* 
168 GREEN RIVER BASIN

Cottonwood Creek near Orangevllle, Utah

Location.- Water-stage recorder, lat. 39°15'55", long. 111°07'40", In SWi sec. 10, T. 18

 S., R. 7 E., 2 miles upstream -from Grimes Wash and 5 miles northwest of Orangevllle.

Drainage area.- 200 square miles.

Records available.- May 1909 to September 1927 (fragmentary), May 1932 to September 1941.

Average discharge.- 25 years (1910-20, 1921-27, 1932-41), 106 second-feet.

Extremes.- Maximum discharge during year, 2,870 second-feet Aug. 9 (gage height, 6.38

 feet) from rating curve extended above 1,000 second-feet; minimum recorded, 11 secondfeet Mar. 10, 12, but may have been less during period of Ice effect.

1909-27, 1932-41: Maximum discharge, that of Aug. 9, 1941; 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. Ephralm 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 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

23 

24 

23 

23 

26

24 

23 

23 

26 

25

23 

23 

23 

23 

23

23 

23 

23 

23 

23

23 

23 

23 

23 

23

37 

25 

22 

21 

22 

21

NOT.

20 

20 

22 

20

18

20 

21 

20 

20 

18

20 

20 

b20 

b!9 

*b!9

bl9 

b20 

21 

21 

20

18 

b!7 

b!6 

b!6 

b!6

b!6 

b78 

D19 

b20 

*b21

Dec.

23 

22

> W32

(») 

> b!9

Jan.

 b!7

Feb.

b!7 

b!6 

b!6 

b!4 

bl4

b!4 

b!5 

bl6 

b!7 

bis

*18 

18 

18 

18 

18

18 

IS 

18 

18 

18

18 

19 

20 

20 

20

18 

18 

20

Month

Oet 

Hoi

Dec

C

Jan 

Fet 

Max 

Apt 

Kaj 

Jur 

Jul 

Aug 

Sej

 K

alendar year!94<

ater year 1940-

Mar.

20 

20

«eo

19 

20

19 

16 

IS 

20 

18

20 

IS 

20 

20 

18

20 

24 

28 

32 

33

32 

37 

31 

24 

23

23 

27 

30 

29 

29 

34

Apr.

33 

31 

29 

28 

33

24 

26 

26 

23 

30

29

49 

34

33 

35

38 

2S 

27 

27 

26

27 

31 

36 

40 

40

47 

60 

62

74 

77

Secondfoot-days

733 

633 

620

31,165

627 

489 

744 

1,102 

15,532 

15,499 

3,732 

1,727 

1,063

42,421

May'

77 

92 

121 

140 

137

163 

1S3 

238 

318 

385

468 

592 

708 

701 

610

568 

642 

754 

662 

484

430 

468 

623 

708 

789

852 

£38 

734 

688 

694 

675

Maximum

37 

7S

1,000

20 

37 

77 

852 

694 

242 

162 

68

S52

June

662 

666 

656 

610 

580

580 

694 

674 

614 

440

396 

390 

415 

462 

520

580 

623 

642 

616 

616

604 

586 

556 

538

452

3S5 

331 

293 

270 

259

July

242 

224 

211 

198 

186

178 

169 

158 

150 

130

126 

119 

119 

112 

110

108 

98 

92 

100 

91

82 

76 

74 

74 

76

82 

77 

70 

68 

66 

66

Minimum

21 

15

-

14 

IS 

24 

77 

259 

66 

33 

29

-

Aug. 

64 

61 

59 

67 

54

69 

SO 

61 

148 

162

alOO 

a 60 

a 60 

a 42 

a 46

63 

a 50 

a45 

 42 

a40

a38 

a37 

a37 

a36 

a35

a35 

a34 

a34 

a33 

a33 

a33

Mean

23.6 

21.1 

20.0

85.1

17 

17.6 

24.0 

36.7 

501 

617 

120 

66.7 

36.1

116

Sept.

a33 

a34 

a34 

a34 

 34

34

33 

34 

34 

34

33 

32

34

34 

33

31 

30 

34 

32 

29

29 

68 

66 

44 

44

39 

35 

33 

33 

32

Run-off In 

acre-feet

1,450 

1,260 

1,230

61,800

1,050 

970 

1,480 

2,190 

30,810 

30,740 

7,400 

3,430 

2,150

84,160

* Winter discharge meaaurement made on this day. '

a No gage-height record; discharge computed on basis of records for Huntingdon Creek near Huntlngton 

and Price River above reservoir near Scofleld. 

b Stage-discharge relation affected by ice.
FREMONT RIVER BASIN 169

Fremont River below Fish Lake, near Fremont, Utah

Location.- Water-stage recorder, lat. 38°35'30", long. 111°40'30", In NEi sec. 34, T. 25 

 S., R. 2 E., half a mile downstream from outlet gates of Fish Lake, 3* miles northeast of Twin Creeks ranger station, and 10 miles northwest of Fremont.

Drainage area.- 27 square.miles.

Records available.- June 1939 to September 1941.

Extremes (regulated).- Maximum dally discharge during year, 90 second-feet June 29; practicaiiy no now at times when gates are closed at outlet of Fish Lake.

1939-41: Maximum dally discharge, that of June 29, 1941; practically no flow at 

times when gates are closed at outlet of Pish Lake.

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

Flow regulated by gates at outlet of Fish Lake, half a mile upstream. No diversions 

above station.

Rating table, water year 1940-41 (gage height, in feet, and discharge, In second-feet)

7.40 

7.60 

7.70 

7.SO 

4.90

8.00 

8.20 

S.40 

S.60 

8.80

S 

14 

22 

32 

44

9.00 

9.go 

9.SO 

9.SO

57

71

95

121

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

S 

9 

10

11 

12 

IS 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

0.2 

.2 

.2 

.2 

.2

.2 

.2

(*)

 a. 2

Nov.

> aO.2

Dec.

. aO.2

Jan.

> aO.2

Feb.

. aO.2

Month

Dot 

Nov 

Dec

C

Jan 

Fob 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

71 ater year 1940-

Mar.

> aO.2

Apr.

> aO.2

Seoondfoot-days

6.2 

6.0 

6.2

1,751.4

6.2 

5.6 

6.2 

6.0 

6.2 

228.4 

1,699 

S77 

164. S

3,017.3

May

. aO.2

Maximum

~-

58

90 

34 

36 

16

90

June

 aO.2

*.2 

.2 

.2

.4 

.4 

.4 

.4 

.4

.2 

.2 

.2 

.2 

.2

.2 

.2 

46 

90 

S6

July

84 

31 

77 

75 

71

68 

67 

6562

60

60

59 

5S 

56 

53

51 

51 

49 

49 

48

46 

45 

44 

43 

43

41 

40 

40 

39 

37 

37

Minimum

[

_

37

17

-

Aug.

36 

34 

33 

32 

32

32 

31

54 

36 

36

36 

36 

35 

33 

32

32 

31 

30 

27 

24

23 

22 

22 

22 

21

20 

20 

20 

20 

18 

17

Mean

0.2 

.2 

.2

4.8

.2 

.2 

.2

.2 

.2 

7.61 

54.3 

28.3 

5.49

S.S

Sept.

16 

16 

15 

14 

14

14 

13 

12 

12

* 12

9 

2 

2 

2

1

1 

1 

1 

.3 

a.8

a.S 

a.S 

a.S 

a.S 

a. 6

a.S 

a.S 

a.S 

a.S 

a.S

Run-off In 

acre-feet

12 

12

12

3,480

12 

11 

12 

12 

12 

453 

3,370 

1,740 

327

5,980

* Discharge measurement made on this day.

a Ho gage-height record; gates closed at lake outlet; discharge computed on basis of three discharge measurements.
170 FREMDNT RIVER BASIN

Fremont River near Blcknell, Utah

Location.- Staff gage, lat. 38°18', long. 111°31', In NEJ sec. 7, T. 29 S., R. 4 E., 

1,000 feet upstream from highway bridge, 1,000 feet downstream from Torrey canal and 

Mill ditch, 1 mile downstream from Government Creek, and 3 miles southeast of 

Blcknell.

Drainage area.- 776 square miles.

Records available.- May 1909 to December 1912 (published as Fremont River near Thurber), 

October 1937 to September 1941.

Extremes.- Maximum dally discharge observed during year, 607 second-feet May 7; minimum 

daily observed, 32 second-feet July 24.

1909-12, 1937-41: Maximum dally discharge observed, that of May 7, 1941; minimum 

dally observed, 18 second-feet June 2, 4, 13-15, 17, 18, 1912.

Remarks.- Records poor. Records include flow of Torrey canal and Mill ditch and represent 

now of Fremont River above these diversions. Discharge computed by combining flow In 

canals with that In river below canals. Oages read once dally. Several diversions 

above station for Irrigation. Flow affscted by Fish Lake and Johnson and Forsythe 

Reservoirs.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26

27 

2S 

29 

30 

31

Oct.

68 

66 

67 

65 

66

66 

69 

66 

72 

68

66 

67 

66 

70 

66

66 

66 

66 

67 

69

71 

74 

74 

a74 

74

79 

82 

77 

68 

65 

64

Nov.

62 

63 

a70 

78 

77

54 

77 

67 

76 

77

114 

105 

100 

72 

73

76 

73 

SI 

82 

S4

80 

108 

80 

80 

83

82 

83 

80 

SO 

S6

Dec.

86 

S7 

85 

87 

85

87 

85 

87 

S6 

86

82 

92 

88 

74 

83

69 

72 

72 

72 

73

75 

73 

73 

74 

77

70 

76 

82 

77 

78 

7S

Jan.

84 

76 

74 

73 

72

70 

74 

74 

70 

65

79 

73 

7S 

70 

79

75 

74 

72 

75 

76

70

74 

73 

73 

79

S3 

85 

79 

81 

82 

84

Feb.

82 

7S 

77 

77 

77

73 

85 

86 

86 

89

92 

99 

90 

93 

91

106 

103 

107 

103 

108

121 

116 

109 

109 

103

98 

98 

a92

Month

Oct 

No\ 

Dec

C

Jar 

Pet 

Mar 

Apr 

May 

Jun 

Ju3 

Aug 

Set

n

alendar year 194SO. .....................

ater year 1940-4

Mar.

a86 

70 

100 

97 

92

88 

88 

a89 

90 

87

88 

87 

87 

87 

90

98 

87 

85 

87 

82

8S 

88 

85 

85 

82

84 

78 

82 

74 

80 

7S

Apr.

78 

78 

80 

78 

SO

74 

74 

77 

75 

77

81 

108 

81 

75 

75

74 

74 

75 

75 

75

74 

74 

63 

74 

S7

75 

76 

7S 

61 

S4

Secondfoot-days

2,144 

2,405 

2,471

25,831

2,341 

2,648 

2,669 

2,330 

6,739 

2,007 

1,544 

1,839 

2,254

31,391

Hay

130 

194 

309 

305 

288

447 

607 

561 

538 

493

350 

340 

304 

201

157

137 

142 

128 

12S 

98

80 

81 

S4 

83 

106

82 

85 

72 

69 

68 

72

Maximum

82 

114 

92

121

85 

121 

100 

108 

607 

83 

93 

67 

87

607

June

69 

71 

70 

74 

80

83 

75 

82 

79 

73

69 

64 

65 

64 

49

48 

62

58 

59 

59

61 

73 

79 

76 

63

63 

64 

58 

60 

57

July

53 

52 

51 

42 

47

39 

44 

61 

41 

42

61 

45 

47 

50 

50

55 

52 

62 

S2 

48

45 

50 

42 

32 

40

93 

36 

48 

42 

43 

49

Mini, 

64 

54 

69

39

65 

V3 

70 

63 

68 

48 

32 

44 

64

32

Aug.

47 

44 

47 

47 

52

54 

45 

62 

63 

65

62 

60 

48 

48 

66

64 

66 

67 

63 

64

62 

62

63 

64 

65

63

64 

63 

67 

65 

67

Mean

69.2 

80.2 

79.7

70.6

75.5 

94.6 

86.1 

77.7 

217 

66.9 

40.8 

59.3 

75.1

86.0

Sept.,

66 

66 

67 

71 

75

74 

75 

74 

72 

73

76 

75 

80 

64

65

66 

74 

74 

76 

74

75 

77 

74 

83 

84

a84

 84 

84 

87 

85

Run-off In 

acre-feet

4,250 

4,770 

4,900

51,240

4,640 

5,250 

5,290 

4,620 

13,370 

3,980 

3,060 

3,650 

4,470

62,250

a No gage-height record; discharge Interpolated.
SAN JUAN RIVER BASIN 171

San Juan River near Pagosa Springs, Colo.

Location.- Water-stage recorder, lat. 37°22'05", long. 106°53'40", In SEi 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 of San Juan River, and 9.5 miles northeast of Pagosa Springs.

Drainage area.- 86.9 square miles*

Records available.- May 1935 to September 1941.

Extremes.- Maximum discharge during year, 2,070 second-feet May 12 (gage height, 4.84 

feet), from rating curve extended above 1,220 second-feet; minimum daily, 13 secondfeet Jan. 3.

1935-41: Maximum discharge, that of May 12, 1941; minimum dally, 5.5 second-feet 

Dec. 20, 1939.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records fair. Diversions above station for Irrigation.

Discharge, in seocnd-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

67 

S3 

43 

43 

140

136 

 B9 

72 

64

57

51 

45 

42 

39 

37

37 

33 

31 

28 

27

25 

24 

24

23 

23

24 

41 

38 

37 

36 

30

HOT.

29 

31 

32 

30 

23

26 

26

27 

27 

25

17 

16 

16 

 14 

IB

21 

23 

25 

27 

26

25 

24 

24 

23

23

23 

24 

21 

22

23

Dec.

24 

24 

24 

23 

23

24 

24 

23 

24 

25

25 

24 

21 

20 

18

16 

21 

23 

21 

19

20 

21 

22 

24 

23

20 

23 

24 

24 

23 

22

Jan.

20

19 

13 

14 

17

20 

19 

18 

20 

20

19 

21 

22 

21 

 20

17 

19 

19 

19 

20

21 

21 

21 

20 

21

19 

20 

21 

23 

84 

23

Feb.

23 

21 

20 

21 

22

22 

23 

25 

 24 

 24

 84 

24 

24 

 25 

24

22 

22 

22 

 23 

21

21 

20ai

23

as

21 

20 

21

Month

Oct 

Noi

Dee

C

Jar 

Pel 

Mai 

Apr 

Ha: 

Jur 

Ju]

Au« 

Sej

H

alendar year 1940... ...................

rater year 1940-4

Mar.

22 

24 

23 

22

24

23 

22 

22 

23 

24

23 

22 

23 

24 

24

24

28 

*36 

45 

51

46 

43 

42 

40 

37

37 

39 

43 

45 

46 

62

Apr.

87 

69 

62 

69 

69

60 

59 

69 

94 

125

98 

B9 

84 

77 

77

80 

78 

72 

63 

59

62 

60 

60 

76 

117

130 

194 

246 

324 

382

Secondfoot-days

1,463 

711 

692

28,667.2

611 

626 

1,009 

3,183 

31,620 

27,574 

12,134 

3,474 

2,866

85,963

May

382 

445 

475 

460 

556

736 

862 

984 

. 1,260 

1,390

1,580 

1,710 

1,680 

1,610 

1,250

1,120 

1,120 

1,310 

1,240 

940

B62 

862 

916 

1,050 

1,020

1,150 

1,080 

984 

940 

838 

80S

Maximum

140 

32 

25

508

24 

25 

62 

3S2 

1,710 

1,260 

748 

233 

215

1,710

June

796 

806 

784 

,820 

826

806 

86S 

1,140 

95S 

778

688 

662 

628 

622 

712

754 

844 

1,010 

1,240 

1,260

1,260 

1,190 

1,230 

1,220 

1,190

1,120 

998 

856 

760 

724

July

646 

598 

646 

652 

746

592

574 

545

556 

525

510 

445 

364 

368 

337

328 

324 

360 

355 

342

286 

260 

224 

230 

224

212 

203 

191 

179 

162 

148

Minimum

23 

14 

16

&C

13 

20 

22

59 

382 

622 

148 

59 

37

13

Aug.

140 

130 

122 

115 

112

125 

125 

140 

135 

130

110 

103 

10S 

127 

233

176 

159 

140 

120 

110

103 

93 

84 

77 

72

67 

62 

59 

63 

74 

60

Mean

47.2 

23.7 

22.3

78.3

19.7 

22.4 

32.5 

106 

1,020 

919 

391 

112 

95.5

236

Sept.

54 

52 

49 

46 

44

42 

41 

43

45 

40

38 

37 

59 

185 

108

84 

91 

106 

117 

185

162 

145 

148 

125 

112

100 

94 

100 

200 

215

Run-off in 

acre-feet

2,900 

1,410 

1,370

56,870

1,210 

1,240 

2,000 

6,310 

62,720 

54,690 

24,070 

6,890 

5,680

170,500

* Winter discharge measurement mads on this day.

Hote.- Stage-discharge relation affected by ice HOT. 12-24, HOT. 29 to J

461676 0-42-12

Tan. 22, Jan. 27 to Feb. 17,
172 SAN JUAN RIVER BASIN

San Juan River at Pagosa Springs, Colo.

Location.- Water-stage recorder, lat. 37°15'55", long. lOVOO'^", in 34 sec. 13, T. 35 

N., R. 2 W., under lower highway bridge at town of Pagosa Springs. Saturn of gage is 

7,052.03 feet above mean sea level, unadjusted.

Drainage area.- 298 square miles.

Records available.- January 1911 to November 1914, May 1935 to September 1941.

Extremes.- Maximum discharge during year, 5,790 second-feet May 13 (gage height, 7.92 

feet), from rating curve extended above 4,500 second-feet; minimum daily, 44 secondfeet Jan. 3.

1911-14, 1935-41: Maximum discharge, that of May 13, 1941: minimum daily, £2 secondfeet Dec. 19, 1938.

Greatest flood known occurred Oct. 5, 1911 (discharge, about 25,000 second-feet; 

gage height, 17.8 feet, revised).

Remarks.- Records good. Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

294 

240 

212 

185 

459

667 

410 

325 

279 

246

215 

193 

177 

162 

150

138 

129 

120 

112 

108

100 

98 

95 

92 

88

88 

140 

120 

116 

125 

104

HOT.

100 

102 

104 

100 

52

92 

88 

92 

90 

92

67 

66 

54 

54 

66

76 

82 

84 

95 

92

88 

87 

84 

81 

79

81 

82 

74 

76 

82

Dec.

85 

S5 

84 

82 

82

84 

82 

82 

85 

88

90 

84 

72 

72 

54

50 

79 

84 

71 

66

71 

76 

78 

88 

82

69 

74 

88 

84 

84 

81

Jan.

72 

71 

44 

48 

60

75 

67 

64 

68 

68

a6S 

a70 

a75 

a70 

69

52 

57 

58 

66 

67

71 

67 

68 

64 

68

58 

62 

63 

79 

78 

74

Feb.

64 

61 

63 

67 

68

74 

87 

Si 

81 

76

75 

78 

78 

81 

85

85 

87 

36 

92 

88

90 

87 

90 

98 

95

84 

79 

82

Month

Dot 

Hoi 

Dec

C

Jar 

Fel 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sei

n

alendar year 194to. .....................

TISt. ...................................

ater year 1940-4

Mar.

95 

100 

95 

88 

96

84 

84 

82 

88 

79

79 

64 

92 

88 

88

93 

114 

145 

169 

187

182 

185 

207 

196 

169

169 

172 

204 

210 

235 

325

Apr.

434 

309 

291 

303 

319

273 

279 

348 

446 

490

399 

399 

391 

338 

348

352 

338 

306 

270 

252

279 

273 

288 

406 

606

779 

996 

1,110 

1,180 

1,220

Secondfoot-days

5,987 

2,492 

2,436

85,161

2,038 

2,264 

4,284 

14,022 

82,610 

86,030 

46,969 

9,468 

7,795

266,395

toy

1,170 

1,350 

1,420 

1,390 

1,460

1,740 

1,920 

2,210 

2,690 

3,020

3,370 

3,920 

4,640 

4,560 

3,810

3,300 

3,340 

3,540 

3,120 

2,780

2,420 

2,370 

2,280 

2,540 

2,640

2,720 

2,740 

2,580 

2,410 

2,520 

2,620

Maximum

667 

104 

90

1,370

79 

98 

325 

1,220 

4,640 

4,040 

2,830 

434 

589

4,640

June

2,540 

2,510 

2,630 

2,620 

2,540

2,440 

2,660 

3,450 

2,910 

2,410

2,120 

1,960 

1,910 

1,970 

2,120

2,230 

2,540 

3,070 

3,540 

3,610

3,810 

3,810 

4,040 

3,940 

3,640

3,570 

3,210 

3,170 

2,750 

2,510

July

2,370 

2,260 

2,270 

2,350 

2,S30

2,230 

2,040 

2,090 

1,960 

1,360

1,880 

1,S70 

1,700 

1,530 

1,380

1,300 

1,300 

1,540 

1,470 

1,470

1,270 

1,160 

1,040 

1,040 

988

835 

737 

642 

57S 

515 

464

Minimum

88 

54 

50

30

44 

61 

79 

252 

1,170 

1,910 

464 

159 

98

44

Aug.

434 

399 

369 

345 

33S

372 

395 

430 

434 

402

352 

316 

291 

300 

515

418 

34S 

325 

288 

270

264 

243 

215 

201 

190

180 

169 

159 

159 

185 

162

Mean

193 

83.1 

78.6

233

65.7 

80.9 

138 

467 

2,665 

2,868 

1,515 

305 

260

730

Sept.

147 

140 

129 

122 

114

110 

104 

104 

116 

106

100 

98 

129 

442 

270

210 

210 

246 

306 

490

477 

414 

477 

383 

358

300 

276 

276 

589 

572

Run-off in 

acre-feet

11,880 

4,940 

4,830

168,900

4,040 

4,490 

8,500 

27,810 

163,900 

170,600 

93,160 

18,780 

15,460

528,400

a Ho gage-height record; discharge computed on liaals of recorded range in stage and weather 

records.
SAN JUAN RIVER BASIN 173

San Juan River at Rosa, II, Hex.

Location.- Water-stage recorder, lat. 37°00'20", long. 107°24'10", in sec. 21, T. 32 N., 

R. 5 W., about 75 feet upstream from highway bridge, a quarter of a mile downstream 

from Pledra River, and about a mile north of Rosa.

Drainage area.- 1,990 square miles.

Records available.- October 1930 to September 1941 In reports of Geological Survey. September 1920 to December 1931 In reports of State engineer.

Average discharge.- 21 years (1920-41), 1,227 second-feet.

Extremes.- Maximum discharge during year, 16,000 second-feet May 13 (gage height, 8.26 

feet), from rating curve extended above 10,200 second-feet by logarithmic plotting; 

minimum daily, 140 second-feet (estimated) Dec. 16.

1930-41: Maximum discharge and gage height, those of Itey 13, 1941; minimum dally 

discharge, 70 second-feet (estimated) Dec. 1, 2, 1934.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good except those for periods of ice effect, which are poor, 

above station for irrigation.

Diversions

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

18 

13 

14 

18

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

1,280 

866 

722 

655 

760

2,400 

1,260 

9SO 

S60 

737

638 

564 

516 

484 

453

425 

404 

377 

358 

336

325 

307 

289 

283 

277

283 

626 

500 

' 411 

390 

384

Hov.

*344 

332 

344 

358 

325

351 

301 

295 

307 

338

289 

*S02 

190 

170 

190

220 

255 

883 

370 

377

351 

*313 

307 

295 

301

301 

290 

270 

*S50 

270

Dec.

280 

270 

260 

260 

260

*270 

260 

250 

260 

290

300 

290 

270 

220 

170

140 

*170 

270 

220 

190

830 

210 

190 

220 

270

220 

200 

190 

250 

300 

320

Jan.

290 

*240 

250 

160 

170

190 

180 

170 

160

*170

200 

240 

300 

250 

200

190 

*180 

190 

180 

210

220 

210 

200 

200 

«S30

210 

220 

250 

290 

320 

290

Feb.

270 

250 

880 

220 

240

*260 

2 SO 

320 

320 

325

320 

355 

*375 

414 

460

544 

564 

613 

724 

748

S97 

a950 

a 850 

a900 

a900

a700 

a 650 

585

Month

Oet 

Hoi 

Dec

C

Jar 

Pel 

Mai 

Api 

Maj 

Jur 

Ju] 

AUJ 

Sei

VFater year 1940-

Mar.

644 

942 

764 

636 

780

684 

620 

557 

578 

538

490 

520 

606 

628 

1,070

1,490 

1,600 

1,620 

1,690 

1,650

2,000 

1,760 

2,000 

2,420 

1,880

1,6SO 

1,530 

1,740 

2,000 

8,140 

2,640

Apr.

2,850 

2,790 

2,420 

2,210 

2,640

2,420 

2,350 

2,720 

3,040 

3,850

3,290 

3,380 

3,660 

2,870 

2,790

2,790 

2,870 

2,870 

2,560 

2,070

8,280 

3,180 

2,720 

2,640 

3,760

5,510 

8,360 

9,950 

8,670 

8,360

Secondfoot -days

19,152 

8,783 

7,500

231,314

6,760 

14,254 

39,391 

112,810 

293,690 

222,090 

113,080 

30,255 

27,659

895,924

May

8,670 

9,680 

9,300 

10,600 

8,670

9,620 

9,950 

10,300 

11,000 

10,600

11,700 

13,200 

13,600 

13,600 

12,000

10,300 

10,300 

11,000 

9,950 

7,480

6,780 

6,920 

6,780 

7,620 

8,360

8,670 

8,670 

8,060 

7,200 

6,780 

6,390

Maximum

2,400 

377 

320

3,420

320 

950 

2,640 

9,950 

13,600 

11,300 

6,520 

1,530 

2,210

13,600

June

6,390 

6,390 

6,650 

6,920 

6,650

6,390 

7,060 

11,500 

9,950 

8,670

6,390 

5,630 

a5,500 

a5,400 

5,630

6,000 

6,520 

7,480 

8,670 

8,670

8,670 

8,670 

8,670 

9,300 

8,980

8,360 

7,620 

7,480 

6,520 

5,760

July

5,510 

5,150 

5,150 

5,390 

6,520

5,760 

4.920 

4,920 

4,690 

4,160

4,260 

4,260 

4,160 

3,560 

3,290

3,120 

3,040 

3,470 

3,470 

4,160

3,180 

3,040 

8,560 

3,280 

8,560

2,210 

a2,000 

al,850 

al,700 

al,500 

al,300

Minimum

277 

170 

140

90

160 

220 

490 

2,070 

6,390 

5,300 

1,300 

448 

284

140

Aug.

al,200 

al,180 

al,070 

1,040 

1,010

1,050 

1,240 

1,220 

1,330 

1,530

1,250 

1,030 

924 

888 

1,430

1,490 

1,350 

1,380 

1,070 

933

879 

825 

724 

644 

592

550 

514 

472 

448 

514 

538

Mean

618 

293 

242

632

218 

509 

1,287 

3,760 

9,474 

7,403 

3,648 

976 

922

2,455

Sept.

478 

454 

424 

375 

360

345

316 

302 

325 

330

302 

284 

340 

1,610 

1,220

S61 

692 

852 

1,830 

1,690

2,000 

1,350 

2,000 

1,370 

1,160

996 

897 

816 

8,070 

2,210

Run-off In 

acre-feet

37,990 

17,420 

14,880

458,800

13,410 

28,870 

79,120 

223,800 

582,500 

440,500 

224,300 

60,010 

54,860

1,777,000

Peak discharge.- Oct. 6 (2 a.m.) 3,760 sec.-ft.; May 13 (4 a.m.) 16,800 sec.-ft.; July 20 

(5:30 a.m.) 5,570 sec.-ft.; July 22 (8:30 p.m.) 5,630 sec.-ft.; Sept. 29 (11 p.m.) 3,380 sec.-ft.

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of weather records and records for stations 

at Fagosa Springs and near Blanco.

Hote.- Stage-discharge relation affected by ice Hov. 13-16, 27-30, Dec. 1 to Feb. 7.
174 SAN JUAN RIVER BASIN

San Juan River near Blanco, N. Hex.

Location.- Water-stage recorder, lat. 36°44', long. 107°49', In sec. 18, T. 29 N., R. 9 W. ; 

half a mile upstream from highway bridge, 1 mile upstream from Canyon Largo, and 1$ 

miles east of Blanco.

Drainage area.- 3,320 square miles.

Records available.- December 1908 to October 1910 (gage heights only January to October 

1910 ) and October 1930 to September 1941 In reports of Geological Survey. December 

1908 to December 1909 and June 1927 to December 1931 In reports of State engineer.

Average discharge.- 13 years (1928-41), 1,558 second-feet.

Extremes.- Maximum discharge during year, 23,300 second-feet May 14 (gage height, 8.46 

feet), from rating curve extended above 12,000 second-feet by logarithmic plotting; 

minimum dally, 221 second-feet Nov. 15.

1930-41: Maximum discharge and gage height, those of May 14, 1941; minimum dally 

discharge, 17 second-feet Aug. 18, 24, 25, 1939.

Remarks.- Records good except those estimated, which are fair, 

for irrigation.

Diversions above station

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

80

81 

28 

83

84 

25

26 

27 

28 

29 

SO 

31

Oct.

2,130 

1,4SO 

1,240 

1,120 

1,030

2,760 

2,210 

1,640 

1,390 

1,230

1,070 

950 

851 

770 

716

656 

608 

570 

525 

490

469 

449 

431 

407 

369

389 

487 

824 

585 

504 

504

Nov.

455 

443 

437 

443 

443

419 

401 

401 

389 

407

431 

350 

273 

263

221

244 

297 

339 

407 

540

455 

431 

413 

413 

395

401 

401 

395 

373 

345

Dec.

361 

378 

361 

356 

350

350 

361 

350 

345 

356

425 

462 

449 

«395 

268

a230 

a240 

a310 

»b380 

a 420

a350 

a310 

a290 

a350 

a500

a410 

a350 

a340 

a370 

a430 

a530

Jan.

a490 

a420 

»b370 

a300 

a270

a290 

a290 

 303 

313 

297

318 

373 

419 

419 

413

345 

334 

268 

263 

268

345 

345 

334 

313 

229

345 

339 

323 

373 

425 

511

Feb.

490 

431 

367 

334 

339

350 

389 

384 

384 

407

389 

395 

462 

525 

600

672 

920 

930 

1,270 

1,420

1,800 

1,940 

1,660 

1,790 

1,770

1,740 

1,220 

1,060

Month

Oct 

Noi 

Dec

C

Jar 

Pet 

Mar 

Apr

Jm 

Jul 

Aug 

Sei

11

alendar year 19'10. .....................

ater year 1940-

Mar.

1,050 

1,770

1,120 

1,140

1,390 

1,140 

960 

900 

860

707 

716 

860 

910 

1,770

2,200 

2,560 

2,580 

2,630 

2,630

2,650 

2,850 

2,780 

3,890 

3,430

2,690 

2,000 

2,130 

2,500 

2,780 

3,360

Apr.

4,640 

4,480 

3,230 

2,830 

3,230

2,990 

2,810 

3,010 

3,380 

4,330

3,890 

4,030 

4,330 

3,750 

3,110

3,210 

3,280 

3,230 

3,010 

2,760

2,370 

3,850 

4,180 

3,360 

3,890

6,200 

7,570 

11,600 

10,800 

10,100

Secondfoot -days

28,874 

11,625 

11,377

285,766

10,645 

24,438 

60,513 

133,450 

395,310 

285,030 

153,980 

35,407 

34,899

1,185,548

May

10,100 

13,800 

12,700 

a!3,000 

a!4,000

a!2,000 

alS.OOO 

a!4,000 

a!5 , 000 

15,300

15 , 900 

17 , 900 

19,300 

20,100 

17,800

15,400 

14,500 

14,500 

13,500 

10,600

9,220 

8,950 

8,950 

9,220 

10,300

10,300 

10,600 

10,000 

8,950 

8,450 

7,970

Maximum

2,760 

540 

530

3,890

511 

1,940 

3,890 

11,600 

20,100 

13,900 

7,970 

1,860 

3,230

20,100

June

7,740 

7,970 

7,970 

8,450 

8,210

8,450 

8,210 

13,200 

13,900 

12,500

9,480 

7,510 

7,290 

7,070 

7,070

7,510 

7,970 

8,950 

10,000 

10,900

10,900 

10,600 

10,600 

12,500 

12,200

11,200 

10,000 

9,760 

8,950 

7,970

July

7,510 

7,070 

7,070 

7,070 

7,740

7,970 

6,860 

6,650 

6,650 

6,250

6,060 

6,060 

6,060 

5,510 

5,170

4,700 

3,980 

4,260 

4,400 

4,850

4,120 

3,840 

3,710 

3,120 

3,230

3,010 

2,700 

2,440 

2,130 

1,990 

1,800

Minimum

389 

221 

230

25

229 

334 

707 

2,370 

7,970 

7,070 

1,800 

616 

366

221

Aug.

1,560 

1,400 

1,300 

1,230 

1,160

1,130 

1,330 

1,360 

1,440 

1,860

1,540 

1,260 

1,110 

1,040 

1,230

1,680 

1,550 

1,480 

1,260 

1,060

980 

932 

876 

804 

773

738 

710 

675 

628 

616 

675

Mean

931 

388 

367

781

343 

873 

1,952 

4,448 

12,750 

9,501 

4,967 

1,142 

1,163

3,248

Sept.

668 

616 

710 

550 

484

484 

460 

449 

438 

416

394 

366 

416 

1,510 

1,740

1,110 

884 

884 

1,300 

1,940

2,440 

1,990 

2,360 

1,740 

1,430

1,240 

1,100 

1,060 

2,490 

3,230

Run-off In 

acre-feet

57,270 

23,060 

22,570

566,800

21,110 

48,470 

120,000 

264,700 

784,100 

565,300 

305,400 

70,230 

69,220

2,351,000

Peak'discharge.- Oct. 6 (1 p.m.) 4,480 sec.-ft.; May 14 (12 m.) 23,300 sec.-ft.; Sept. 19 (12p.m.) 

5,B40 secT-ft.; 3ept. 21 (11 a.m.) 3,010 sec.-ft.; Sept. 22 (f, p.m.) 3,120 sec.-ft.; Sept. 30 

(4 a.m.) 4,260 sec.-ft.

» Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of weather records and records for stations 

at Rosa and at Farmlngton.

b Stage-discharge relation affected by Ice.
SAN JUAN RIVER BASIN 175

San Juan River at Farmlngton, N. Hex.

Location.- Water-stage recorder, lat. 36°43', long. 108°13', In NEiNEi sec. 20, T. 29 N., 

R. 13 W., 1,900 feet downstream from Anlmas River and 1 mile southwest of Farmlngton.

Drainage area.- 6,580 square miles.

Records available.- June 1904 to September 1906, September 1912 to December 1914 and October 1930 to September 1941 In reports of Geological Survey. September 1912 to July 

1918 and November 1921 to December 1931 In reports of State engineer.

Average discharge.- 18 years (1922-25, 1926-41), 2,596 second-feet.

Extremes.- Maximum discharge during year, 32,200 second-feet May 13 (gage height, 7.34 

feet;, from rating curve extended above 24,400 second-feet by logarithmic plotting; 

minimum dally, 451 second-feet Dec. 16.

1930-41: 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 dally, 

27 second-feet Aug. 22, 1939.

Remarks.- Records good. Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

5

6 

7

e

9 

10

11

12 

15

14 

IS

16 

17 

16 

19 

20

21 

28 

23 

24 

25

26 

27 

26 

29 

50 

51

Oct.

3,330 

2,630 

2,120 

1,860 

1,710

2,780 

3,670 

2,890 

2,400 

2,200

2,000 

1,750 

1,610 

1,460 

1,330

1,220 

1,130 

1,070 

1,010 

958

890 

860 

801 

765 

720

688 

738 

1,160 

1,010 

890 

820

NOT.

820 

738 

774 

765 

783

765 

696 

704 

680 

720

738 

729 

591 

550 

544

550 

605 

729 

910 

1,130

994 

890 

840 

840 

792

756 

729 

733 

712 

688

Dec.

704 

720 

712 

704 

696

688 

696 

696 

680 

680

890 

994 

958 

801 

605

451 

493 

672 

774 

870

729 

648 

605 

720 

1,070

870 

729 

696 

738 

900 

1,110

Jan.

1,010 

S40 

747 

612 

550

577 

584 

619 

612 

633

648 

830 

994 

958 

870

756 

664 

591 

.550 

598

688 

720 

712 

633 

712

738 

6P6 

664 

830 

910 

934

Feb.

982 

910 

756 

738 

712

704 

850 

870 

850 

810

922 

922 

994 

1,020 

1,170

1,350 

1,710 

1,750 

2,000 

2,400

2,920 

3,300 

2,980 

2.98G 

2,710

2,630 

1,980 

1,710

Month

Ocl 

NOT 

Dec

C

Jar 

Pel 

Hai

Api 

Ma; 

Jui 

Ju3 

Aug 

Sei

1

alendar year 194to. .....................

rater year 1940-4

Peak discharge. -

16130 p.m.) 5, SOU : 

ft.; Sept. 30 (3 a

Mar.

1,630 

2,380 

2,710 

1,710 

1,610

2,150 

1,820 

1,550 

1,490 

1,350

1,160 

1,090 

1,200 

1,440 

2,170

3,270 

3,700 

3,780 

3,200 

3,270

2,920 

3,640 

3,200 

3,740 

4,380

3,300 

2,400 

2,860 

3,110 

3,600 

3,950

Apr.

4,760 

6,420 

4,530 

3,700 

3,840

3,880 

3,780 

3,840 

4,460 

5,360

5,820 

5,570 

5,530 

5,320 

4,160

4,200 

4,160 

4,240 

4,060 

3,670

3,070 

4,420 

5,990 

4,570 

4,650

7,330 

8,720 

12,500 

13,100 

11,900

Secondfoot -days

48,470 

22,500 

23,299

492,689

22,480 

43,630 

79,780 

167,550 

583,700 

449,800 

263,740 

65,361 

74,541

1,844,851

May 13 (6 p.m.) 32,200 sec. -ft.; Aui 

ec.-ft.; Sept. 20 (11:30 p.m.) 6,681 

M. ) 7,380 aeo.-ft.

May

11,600 

17,300 

17 , 000 

22,200 

24,700

18,400 

19,100 

19,900 

21,400 

23,800

23,800 

25,500 

28,000 

30,000 

28,000

23,300 

20,700 

21,500 

21,500 

19,100

13,900 

12,000 

13,000 

11,700 

13,600

15,300 

15,300 

15,700 

13,300 

11,700 

11,400

Maximum

3,670 

1,130 

1,110

6,850

1,010 

3,300 

4,380 

13,100 

30,000 

20,30O 

12 , 600 

4,820 

7,620

30,000

June

11,100 

11,700 

12,300 

13,300 

13,000

13,600 

12,600 

15,700 

19,900 

17,500

14,300 

11,400 

10,500 

10,300 

11,100

12,000 

12,600 

14,300 

17,100 

19,100

19,100 

18,700 

18,300 

19,500 

20,300

18,300 

17,500 

16,400 

15,000 

13,300

July

12 , 000 

11,700 

11,400 

11,700 

11,700

12,600 

11,400 

11,100 

11,100 

10,800

10,800 

10,800 

10,500 

9,980 

8,900

8,120 

7,330 

7,380 

7,140 

7,620

6,680 

6,460 

6,680 

6,230 

6,230

5,800 

5,120 

5,000 

4,350 

3,800 

3,270

Minimum

688 

544 

451

83

550 

704 

1,090 

3,070 

11,400 

10,300 

3,270 

826 

534

451

Aug.

2.S60 

2,540 

2,300 

2,160 

2,000

1,900 

2,180 

2,760 

3,690 

4,820

3,440 

2,540 

2,110 

1,880 

1,950

2,860 

3,080 

2,830 

2,410 

1,970

1,720 

1,570 

1,480 

1,370 

1,270

1,150 

1,040 

936 

845 

826 

- 875

Mean

1,564 

750 

752

1,346

725 

1,558 

2,574 

5,585 

18,830 

14,990 

8,508 

2,108 

2,485

5,054

Sept.

905 

808 

781 

836 

620

650 

665 

612 

590 

562

555 

534 

673 

2,780 

3,640

2,410 

2,240 

2,060 

2,640 

4,210

4,930 

4,740 

7,620 

5,230 

3,670

3,110 

2,810 

2,760 

4,680 

6,230

Run-off In 

acre-feet

96,140 

44,630 

46,210

977,200

44,590 

86,540 

158,200 

332,300 

1,156,000 

898,200 

523,100 

129,600 

147,800

5,659,000

5. 9 (1U30 p.m.) 7,870 aeo.-ft.; Sept. 17 

1 sec. -ft.; Sept. 23 (1130 a.m.) 8,900 aec.-
176 SAN JUAN RIVER BASIN

San Juan River at Ship Rock, N. Mex.

Location.- Water-stage recorder, lat. 36°47'35", long. 108°43'55", In SWi sec. 22, T. SON., 

R. 18 W., 3 miles northwest of Ship Rock and about 6 miles downstream from Chaco River. 

Datum of gage 4,848.6 feet above mean sea level (river-profile survey).

Drainage area.- 12,800 square miles.

Records available.- January to October 1911, October 1930 to September 1931 and October 

1932 to September 1941 in reports of Geological Survey. January to October 1911 and 

November 1915 to December 1931 in reports of State engineer.

Average discharge.- 21 years (1916-20, 1921-25, 1927-31, 1932-41), 2,903 second-feet.

Extremes.- Maximum discharge during year, 32,400 second-feet May 14 (gage height, 10.02 

feetj, from rating curve extended above 26,200 second-feet by logarithmic plotting; 

minimum dally, 590 second-feet Nov. 16.

1930-31, 1932-41: Maximum discharge, 44,200 second-feet Sept. 28, 1935, from rating 

curve extended above 20,000 second-feet by logarithmic plotting; maximum gage height, 

that of May 14, 1941; minimum daily discharge, 8 second-feet Aug. 25, 26, 1939.

A stage of about 6.5 feet, former site and datum, 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 fair. Diversions above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

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.

3,600 

3,260 

2,300 

1,7SO 

1,480

1,920 

4,170 

3,200 

2,710 

2,320

2,040 

1,860 

1,690 

1,550 

1,460

1,400 

1,350 

1,260 

1,160 

1,090

949 

905 

832 

805 

778

769 

823 

1,100 

1,370 

1,180 

1,030

Nov.

949 

872 

841 

778 

760

769 

745 

715 

700 

730

738 

752 

715 

614 

596

590 

608 

730 

894 

1,040

1,130 

1,030 

949 

949 

949

883 

850 

832 

805 

778

Dec.

745 

760 

769 

760 

752

760 

769 

760 

760 

796

938 

1,310 

1,350 

1,230 

927

672 

620 

872 

1,150 

1,330

1,260 

1,070 

988 

1,100 

1,920

1,540 

1,090 

778 

949 

1,150 

1,800

Jan.

2,100 

1,400 

916 

814 

738

708 

722 

738 

685 

730

787 

861 

1,200 

1,300 

916

715 

614 

606 

602 

596

685 

722 

752 

730 

745

778 

760 

752 

861 

894 

974

Feb.

1,160 

1,180 

1,020 

850 

814

752 

7S7 

949 

988 

894

1,100 

1,180 

1,310 

1,400 

1,390

1,590 

2,040 

2,260 

2,280 

2,880

3,580 

4,290 

a3,300 

a3,000 

2,990

3,030 

2,420 

1,540

Month

Oct

N01

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Sep

H

alendar year 194

ater year 1940-4

Mar.

1,230 

1,630 

3,050 

1,920 

1,570

2,200 

2,000 

1,760 

1,520 

1,460

1,230 

938 

974 

1,210 

1,720

3,270 

3,600 

3,940 

3,820 

3,710

3,490 

4,290 

3,940 

4,410 

5,410

4,170 

3,490 

2,900 

3,120 

3,470 

3,820

Apr.

4,410 

6,400 

4,900 

4,290 

4,060

4,290 

3,940 

3,820 

4,170 

4,780

5,680 

5,410 

5,540 

5,410 

4,530

4,530 

4,410 

4,530 

4,410 

3,940

3,490 

4,410 

6,100 

5,020 

4,780

6,540 

9,040 

12,500 

13,500 

12,500

Secondfoot-days

52 , 161 

24,291 

31,675

514,460

26,403 

50,974 

85,262 

171,330 

613,500 

466,300 

259 220 

69^781 

92,468

1^943,365

May

12,500 

16,500 

19,300 

22,400 

25,100

17,000 

17,600 

18,700 

19,900 

21,200

23,100 

25,100 

27,900 

30,100 

28,600

24,400 

22,400 

22,400 

22,400 

21,200

17,000 

16,000 

19,300 

17,600 

17,000

15,400 

15,400 

16,000 

16,000 

13,500 

12,500

Maximum

4,170 

1,130 

1,920

6', 600

2,100 

4,290 

5,410 

13,500 

30,100 

22,400 

13,500 

6,960 

13,500

30,100

June

12,100 

12,500 

12,500 

13,500 

14,000

14,400 

14,400 

16,000 

21,200 

18,200

14,900 

11,600 

10,800 

10,800 

11,200

12,500 

13,500 

14,900 

18,700 

19,900

19,900 

18,700 

18,700 

19,900 

22,400

19,300 

17,000 

14,900 

14,900 

13,000

July

12,500 

11,600 

11,200 

11,600 

12,100

13,500 

12,100 

11,000 

11,000 

10,800

10,200 

10,600 

10,200 

9,600 

3,320

7,640 

7,000 

6,250 

7,000 

7,000

7,640 

6,540 

6,400 

5,820 

5,960

5,410 

4,780 

4,530 

4,060 

3,600 

3,270

Minimum

769 

590 

620

20

596 

752 

938 

3,490 

12,500 

10,800 

3,270 

841 

700

590

Aug.

2,920 

2,630 

2,360 

2,220 

2,160

2,040 

2,120 

2,550 

3,480 

6,960

3,600 

2,650 

2,360 

2,180 

2,140

2,970 

2,970 

3,120 

2,460 

2,220

2,000 

1,820 

1,590 

1,440 

1,200

1,090 

1,030 

927 

861 

841 

872

Mean

1,683 

810 

1,022

1,406

852 

1,820 

2,750 

5,711 

19,790 

15,540 

8,362 

2,251 

3,082

5,324

Sept.

905 

872 

806 

883 

796

805 

796 

745 

700 

861

1,070 

1,310 

1,820 

2,990 

4,170

3,230 

2,200 

2,800 

2,460 

4,410

5,150 

6,770 

13,500 

6,840 

4,060

3,160 

2,740 

2,340 

4,610 

8,670

Run-off In 

acre-feet

103,500 

43,180 

62,830

1,021,000

52,370 

101,100 

169,100 

339,800 

1,217,000 

924,900 

514,200 

13S.400 

183,400

3,355,000

a Ho gage-height record; 

at Farmington.

discharge computed on basis of weather records and records for station
SAN JUAN RIVER BASIN 177

San Juan River near Bluff, Utah

Location.- Water-stage recorder, lat. 37°09', long. 109°52', In SWi sec. 7, T. 42 S.-, R.

 19 E.,' 1,600 feet downstream from Gypsum Wash, 1,800 feet upstream from bridge, and 

20 miles southwest of Bluff. Altitude of gage, 4,050 feet (from river-profile map).

Drainage area.- 23,900 square miles.

Records available.- October 1914 to September 1917, March 1927 to September 1941.

Average discharge.- 16 years (1915-17, 1927-41), 2,931 second-feet.

Extremes.- Maximum discharge during year, 34,700 second-feet May 15 (gage height, 20.2

 feet): minimum dally, 617 second-feet Sept. 11.

1915-17, 1927-40: 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 Shlprock,N. Mex., probably exceeded that of Sept. 10, 1927, at this station, but stage was not accurately determined.

Remarks.- Records good. Diversions above station for Irrigation. No diversions between 

station and mouth of river.

Discharge, In second-feet, water year October 194O to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

9,820 

4,100 

3,100 

2,340 

5,590

6,240 

3,310 

3,990 

3,000 

2,650

2,290 

2,140 

1,900 

1,750 

1,590

1,530 

1,440 

1,370 

1,270 

1,250

1,210 

1,110 

1,030 

903 

818

378 

1,900 

1,410 

1,080 

1,370 

1,150

NOT.

1,060 

1,000 

981 

988 

903

884 

896 

884 

812 

788

836 

916 

903 

903 

794

747 

742 

794 

2,780 

3,260

1,930 

1,560 

1,300 

1,130 

1,050

994 

974 

936 

910 

903

Dec.

878 

854 

848 

878 

866

872 

848 

848 

884 

878

1,010 

1,150 

1,950 

1,760 

1,370

974 

378 

759 

1,430 

1,450

1,290 

1,250 

1,030 

943 

3,110

2,960 

2,070 

1,420 

1,170 

1,760 

2,620

Jan.

3,200 

2,590 

1,850 

1,320 

al,100

910 

336 

SIS 

788 

788

830 

981 

1,360 

1,420 

1,920

1,450 

1,150 

974 

836 

776

747 

842 

1,080 

1,090 

1,240

1,660 

1,230 

1,170 

1,260 

1,600 

1,440

Feb.

1,340 

1,220 

1,280 

1,160 

955

903 

1,120 

1,710 

1,520 

1,330

1,200 

1,460 

1,680 

1,660 

1,580

1,550 

1,710 

1,920 

2,930 

2,990

4,290 

4,670 

4,770 

4,080 

4,140

4,110 

3,690 

2,910

Month

Oct 

No\ 

Dec

C

Jai 

Pet 

Mai 

Apr 

Ha, 

Jui 

Ju] 

Aug 

Sei

V

alendar year 1940... ...................

rater year 1940-1

Mar.

2,080 

1,890 

2,220 

3,400 

2", 440

2,090 

2,330 

2,320 

1,960 

1,760

1,660 

1,520 

1,520 

1,670 

4,700

4,290 

4,460 

4,560 

4,200 

4,400

4,820 

4,500 

5,500 

5,640 

5,640

5,990 

4,590 

3,690 

3,220 

3,500 

3,960

Apr.

4,450 

5,300 

7,250 

5,240 

4,480

4,260 

4,530 

4,080 

4,020 

4,380

5,270 

6,330 

6,330 

6,330 

5,300

4,900 

4,930 

4,690 

4,750 

4,610

4,380 

4,120 

6,150 

7,630 

6,150

7,560 

13,000 

14,800 

16,800 

14,800

Secondfoot-days

73,529 

33,558

41,013

597,641

39,206 

63,878 

106,520 

197,820 

667,000 

461,400 

265,180 

37, 633 

101,938

2,136,675

May

14,400 

14,100 

20,000 

20,000 

27,100

25,700 

20,500 

21,600 

21,600 

23,500

25,200 

26,000 

28,000 

33,800 

32,600

28,300 

22,900 

22,100 

22,600 

22,600

16,100 

15,100 

15,600 

24,200 

18,900

18,900 

18,400 

18,400 

16,600 

14,600 

14,400

Maximum

9,820 

3,260 

3,110

12,130

3,200

4,770 

5,990 

16,800 

33,800 

20,200 

12,900 

8,370 

12,700

33,300

June

13,400 

12,900 

12,900 

13,400 

13,900

13,900 

15,100 

14,100 

18,900 

20,200

17,900 

14,100 

11,400 

11,100 

11,400

12,000 

12,500 

13,400 

14,400 

16,600

16,100 

18,400 

18,400 

18,600 

20,000

20,200 

17,900 

16,600 

15,600 

14,100

July

12,900 

12,200 

11,600 

11,400 

11,600

12,000. 

12,500 

11,100 

10,300 

10,300

10,500 

10,000 

10,000 

9,340 

9,210

6,410 

7,630 

7,060 

6,690 

7,256

7,440 

7,060 

6,330 

6,690 

6,150

6,510 

5,560 

4,740 

4,510 

4,120 

3,580

Minimum

818 

742 

759

31

747 

903 

1,520 

4,020 

14,100 

11,100 

3,560 

903 

617

617

Aug.

3,110 

2,850 

2,560 

2,420 

2,280

2,090 

1,910 

2,480 

3,380 

8,370

7,010 

3,370 

2,860 

2,440 

3,800

5,600 

4,350 

3,740 

3,400 

2,700

2,290 

1,960 

1,760 

1,600 

1,470

1,330 

1,200 

1,140 

1,060 

1,000 

903

Mean

2,372 

1,119 

1,323

1,633

1,265 

2,2S1 

3,436 

6,594 

21,520 

15,380 

8,554 

2,627 

3,398

5,359

Sept.

922

948 

922 

836 

788

854 

638 

664 

659 

623

617 

628 

759 

3,370 

5,100

5,290 

3,570 

3,110 

4,060 

3,150

4,780 

5,630 

12,700 

11,800 

6,330

4,480 

3,750 

3,380 

3,360 

8,220

Run-off in 

acre-feet

145,800 

66,560 

81,350

1,135,000

77,760 

126,700 

211,300 

392,400 

1,323,000 

915,200 

526,000 

173,800 

202,200

4,242,000

a No gage-height record; discharge Interpolated.
178 SAN JUAN RIVER BASIN

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

Location.- Water-stage recorder, lat. 37°29 I 00", long. 106<fc5'45", In sec. 36, T. 38 N.,R. 

1 w., half a mile downstream from Beaver Creek, if miles upstream from Boras Lake, and 

16 miles northeast of Pagosa Springs.

Drainage area.- 41.2 square miles.

Records available.- April 1937 to September 1941.

Extremes.- Maximum discharge during year, 888 second-feet June iJ3 (gage height, 4.87 feet), 

from rating curve extended above 450 second-feet; minimum not determined, occurred during period of Ice effect.

1937-41: Maximum discharge, 1,100 second-feet June 3, 1938 (gage height, 4.43 feet), 

from rating curve extended above 600 second-feet; minimum not determined.

Greatest 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.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

80

81 

82 

23 

24 

£5

£6 

27 

28 

29 

30 

31

Oct.

74 

54 

42 

33 

117

156 

117 

94 

76 

62

51 

43 

39 

38 

38

38 

38 

37 

36 

35

35 

34 

34 

32

31

33 

30 

33 '35 

35 

32

HOT.

31 

32 

32 

30 

28

29 

29 

29 

29 

26

24 

22 

21 

«20 

22

24 

26 

27 

29 

29

29 

28 

27 

26 

25

25 

24 

24 

24 

25

Dec.

> 21

Jan.

> 14

Feb.

 20

Month

Oct 

Not 

Dec

C

Jan 

Pet 

Mar 

Apr 

May 

Jut) 

Jul 

Aug 

Sej

U ater year 1940-4^

Mar.

24 

25 

26 

26 

26

25 

25 

23 

24 

21

18 

23 

26 

27 

29

26 

24 

21 

«21 

24

20 

19 

18 

18 

17

17 

16 

17 

16 

18 

26

Apr.

28 

22 

20 

20 

22

20 

19 

20 

24 

29

26 

23 

21 

20 

20

20 

19 

18 

18 

18

18 

18 

18 

18 

20

23 

32 

35 

47 

59

Secondfoot -days

1,582 

796 

651

17,840

434 

560 

686 

715 

10,892 

16,031 

11,625 

2,494 

2,089

48,555

May

59 

79 

80 

74 

105

156 

170 

290 

326 

398

467 

550 

572 

558 

477

458 

502 

508 

440 

365

329 

323 

332 

386 

425

470 

458 

485 

383 

362 

365

Maximum

156 

32

263

29 

59 

572 

790 

660 

125 

139

790

June

389 

431 

474 

470 

470

461 

474 

474 

386 

320

299 

296 

314 

353 

401

455 

526 

628 

670 

630

680 

710 

790 

790 

760

730 

710 

690 

650 

600

July

560 

530 

510 

495 

660

530 

505 

490 

480 

470

470 

455 

435 

405 

365

365 

335 

395 

390 

370

340 

300 

280 

260 

230

205 

185 

170 

160 

145 

135

Minimum

30 

20

-

16 

18 

59 

296 

135 

43 

33

-

Aug.

125 

115 

105 

95 

89

105 

110 

125 

120 

105

96 

86 

79 

73 

110

100 

88 

76 

70 

66

65 

60 

55 

54 

51

47 

45 

43 

46 

47 

43

Mean

51.0 

26.5 

21.0

48.7

14.0 

20.0 

22.1 

23.8 

351 

534 

375 

60.5 

69.6

133

Sept.

41 

40 

38 

37 

35

34 

33 

36 

35 

34

33 

33 

56 

93 

69

54 

62 

73 

90 

139

115 

114 

124 

114 

96

84 

76 

79 

115 

107

Run-off In 

acre-feet

3,140 

1,580 

1,290

35,390

861 

1,110 

1,360 

1,420 

21,600 

31,800 

23,060 

4,950 

4,140

96,310

« Winter discharge measurement made on this day.

Hote.- Ho gage-height record June 19 to Aug. 17; discharge computed on basis of one discharge 

measurement and record for station near Pagosa Springs. Stage-discharge relation affected by Ice 

Hov. 11 to Feb. 28.
SAN JUAN RIVER BASIN 179

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

Location.- Water-stage recorder, lat. 37°32'30", long. 106°53'45", in NEi sec. 12, T. 36 

N., R. 1 W., 30 feet downstream from highway bridge, 0.6 mile upstream from mouth, and 

10 miles northeast of Pagosa Springs.

Drainage area,- 87.9 square miles.

Records available.- April 1935 to September 1941.

Extremes.- Maxlntum discharge during year, 2,300 second-feet June 23 (gage height, 5.83 

reetj, from rating curve extended above 1,300 second-feet; minimum daily, 24 secondfeet Jan. 3.

1935-41: Maximum discharge, that of June 23, 1941; minimum dally, 10 second-feet 

Dec. 19, 1937.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good except those for periods of ice effect, which are fair. Diversions 

above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

177 

152 

135 

117 

261

331 

237 

194 

175 

154

132 

120 

109 

100 

91

S5 

80 

74 

71 

66

63 

61 

58 

57 

56

58 

71 

66 

65 

66 

5S

NOT.

56 

57 

57 

57 

49

52 

50 

52 

51 

49

36 

36 

33 

*36 

39

41 

43 

47 

47 

47

46 

44

44 

43 

43

44 

43 

38 

41 

44

Dec. ,

46 

46

45 

44 

44

45 

44 

44 

46 

44

4S 

45 

39 

39 

29

27 

43 

45 

39 

36

39 

41 

43 

47 

45

38 

39 

47 

45 

45 

44

Jan.

40 

39 

24 

25 

34

41 

37 

35 

37 

37

36 

3S 

41 

38 

«30

31 

33 

35 

36 

36

36 

34 

35 

35 

36

30 

30 

32 

37 

37 

35

Feb.

32 

30 

30 

30 

31

32 

34 

31 

«29 

27

29

31 

28 

32 

30

29 

28 

28 

30 

27

2S 

27 

28 

29 

29

27 

27 

28

Month

Oet 

HOT 

Dec

C

Jar 

Fet 

Max 

Api 

Kaj 

Jur 

Ju3 

Aug 

Set

K

alendar year 19 to. .....................

ater year 1940-

Mar.

34 

34 

32 

31 

33

32 

31 

30 

31 

30

29

30 

33 

37 

34

33 

35 

41 

46 

49

46 

44 

46 

46 

42

41 

40 

42 

43 

46 

61

Apr.

SO 

66 

61 

60 

66

61 

61 

67 

77 

93

80 

SO 

80 

72 

74

74 

72 

68 

63 

62

65 

65 

66

81 

111

142 

194 

221 

283 

291

Secondfoot -days

3,540 

1,365 

1,311

36,771

1,080 

821 

1,182 

2,936 

2S,225 

37,191 

22,227 

4,052 

3,853

107,783

May

279 

343 

363 

327 

371

494 

606 

665

S40 

9S1

1,240 

1,520 

1,710 

1,580 

1,320

1,190 

1,240 

1,310 

1,150 

830

730 

745 

750 

888 

970

1,110 

1,120 

1,030 

898 

820 

SOS

Maximum

331 

57 

48

638

,41 

34 

61 

291 

1,710 

1,390 

1,590 

208 

287

1,890

June

S55 

942 

1,090 

1,110 

1,100

1,060 

1,140 

1,370 

1,040 

815

695 

675 

646 

730 

820

893 

1,070 

1,400 

1,640 

1,380

1,720 

1,750 

1,890 

1,890 

1,800

1,750 

1,670 

1,620 

1,380 

1,250

July

1,170 

1,120 

1,120 

1,200 

1,590

1,140 

1,070 

1,090 

954 

915

915 

926 

790 

685 

584

5S4 

552 

651 

624 

610

520 

484 

444 

435 

395

347 

327 

283 

254 

230 

218

Minimum

56 

33 

27

13

24 

27 

29 

60 

279 

646 

218 

6S 

65

24

Aug.

197 

180 

159 

149 

144

170 

175 

208 

202 

175

157 

137 

124 

117 

197

172 

147 

130 

117 

113

111 

102 

89 

85 

78

72 

70 

68 

68 

71 

6S

Mean

114 

45.5 

42.3

100

34. S 

29.3 

38.1 

97.9 

910 

1,240 

717 

131 

128

295

Sept.

68 

68 

67 

67 

66

66 

66 

66 

66 

65

66 

65 

73 

180 

111

81 

95 

113 

162 

287

254 

227 

240 

194 

167

142 

124 

126 

250 

227

Run-off In 

acre-feet

7,020 

2,710 

2,600

72,930

2,140 

1,630 

2,340 

5,820 

55,980 

73,770 

44,090 

8,040 

7,640

213,800

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice NOT. 11-17, NOT. 2S to Dec. S, Dec. 12 to Feb. 9.
180 SAN JUAN RIVER BASIN

Turkey Creek near Pagosa Springs, Colo.

Location.- Water-stage recorder, lat. 37°22'1511 , long. 106°56 I 45", at west side of sec, 

10, T. 36 N., R. 1 w., 2£ miles upstream from mouth and 8 miles northeast of Pagosa 

Springs.

Drainage area.- 23.0 square miles.

Records available.- May 1937 to September 1941.

Extremes.- Maximum discharge during year, 860 second-feet May 12 (gage height, 3.73 feet), 

iron rating curve extended above 550 second-feet: minimum dally, 4.3 second-feet Oct. 

20.

1937-41: Maximum discharge, that of May 12, 1941; minimum dally, 0.4 second-foot 

Sept. 28, 1937, July 25, 26, 1939, July 9-17, 24, 25, 1940. 

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records fair. A large- part of flow diverted from drainage basin above station 

during irrigation season.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

48 

36 

31 

25 

106

96 

55 

37 

29 

30

26 

23 

16 

8.4 

7.2

6.2

6.0 

5.2 

4.S 

4.3

5.5 

7.5 

9.1 

9.4 

9.9

11 

14 

13 

13 

13 

11

NOT.

11 

12 

12 

12 

13

11 

11 

11 

11 

12

10 

10 

12 

*15 

16

15 

14 

12 

12 

12

11 

11 

11 

11 

10

11 

10 

10 

10 

10

Dec.

11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

10 

9.8 

9.0 

S.6

9.S 

11 

12 

11 

10

10 

10 

11 

12 

11

10 

11 

12 

11 

11 

11

Jan.

10 

9.6 

8.4 

9.0

10

11 

10 

10 

10 

10

10 

1011

10 

*9.7

8.7 

9.0 

9.5 

10 

11

11 

11 

11 

11 

11

10 

10 

10 

11 

11 

11

Feb.

10 

9.5 

10 

10 

10

11 

11 

11 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

*10 

10

10 

10 

1011 

11

10 

9.5 

9.5

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Hai 

Apr 

Maj 

Jui 

Jul 

Aug 

Sej

It

alendar year 19'10. .....................

ater year 1940-4

Mar.

11 

12 

11 

11 

12

11 

10 

10 

10 

10

10 

10 

10 

10 

10

1011

*12 

12 

14

14 

15 

15 

15 

14

13 

12 

IS 

14 

15 

24

Apr.

27 

21 

19 

21 

21

19 

19 

20 

29 

- 36

27 

28 

26 

22 

22

22 

21 

19

18 

18

16 

16 

16 

21 

31

41 

7S 

89 

96 

111

Secondfoot-days

718.5 

349 

332.2

7,695.6

514.9 

283.5 

381 

970 

9,629 

8,868 

4,9S2 

1,006 

721.6

28,555.7

Hay

116 

143 

149 

143 

179

241

266 

320 

371 

405

493 

529 

534 

540 

424

390 

390 

400 

338 

271

249

275 

275 

284 

297

306 

297 

285 

249 

237 

233

Maximum

106 

16 

12

128

11 

11 

24 

111 

540 

414 

301 

54 

57

540

June

225 

233 

261 

249 

241

241 

293 

357 

297 

249

202 

177 

184 

202 

245

269 

309 

345 

396 

37S

396 

392 

414 

406 

378

357 

333 

313 

265 

261

July

229 

213 

221 

241 

301

233 

209 

217 

205 

202

213

221 

177 

152 

146

138 

142 

163 

152 

152

130 

116 

106 

127 

138

101 

S6 

77 

64 

57 

53

Minimum

4.3 

10 

8.6

.4

8.4 

9.5 

10 

16 

116 

177 

53 

16 

7.0

4.3

Aug.

50 

45 

41 

40 

41

40 

47 

54 

51 

47

46

37 

34 

33 

36

38 

34 

32 

29 

2S

26 

22 

20 

19 

18

16 

16 

16 

16 

18 

16

Mean

23.2 

11.6 

10.7

21.0

10.2 

10.1 

12.3 

52 3 

311 

296 

161 

32.5 

24.1

78.2

Sept.

15 

12 

8.6 

8.2 

7.8

7.2 

7.0 

7.8 

8.2 

8.6

8.2 

8.0 

14 

41 

29

80 

19 

27 

33 

50

42

43 

47 

39

33

27 

24 

24 

57 

46

Run-off In 

acre-feet

1,430 

698 

659

15,260

625 

562 

766 

1,920 

19,100 

17,590 

9,880 

2,000 

1,430

56,640

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by Ice Nor. 11-14, NOT. 28 to Mar. 17.
SAN JUAN RIVER BASIN 

Rio Blanoo near Pagosa Springs, Colo.

181

Location.- Water-stage record, lat. 37°12'45", long. 106°47'40_", in center of sec. l, T. 

34 N., R. IE., at highway bridge, 0.4 mile upstream from White Creek and 12.5 miles 

southeast of Pagosa Springs.

Drainage area.- 58.0 square miles.

Recorde available.- May 1935 to September 1941.

Extremes.- Maximun discharge during year, 1,260 second-feet May 11 (gage height, 3.77 

reetj, from rating curve extended above 710 second-feet; minimum daily, 15 second-feet 

Oct. 22-25.

1935-41: Maximum discharge, 1,340 second-feet May 17, 1937 (gage height, 4.06 feet), 

from rating curve extended above 600 second,-fest; minimum dally, 6.6 second-feet Feb. 

24, 27, 28, 1938.

Greatest 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 Tear October 1840 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

ie

17 

IS 

19 

20

21 

22 

23 

84 

25

26 

27 

28 

29 

SO 

31

Oct.

76 

53 

51 

45 

132

S3 

59 

50 

45 

38

32 

30 

26 

24 

23

21 

19 

19 

17 

16

16 

15 

15 

15 

15

19 

38 

35 

39 

36 

29

HOT.

33 

39 

40 

43 

36

38 

39 

43 

40 

33

40 

46 

46 

. 50 

*33

45 

39 

39 

89 

25

83 

33 

80 

80 

23

26 

24 

25 

26 

25

Dec.

25 

25 

85 

25 

85

26 

26 

26 

27 

27

27 

27 

25 

24 

23

20 

24 

25 

24 

24

25 

85 

26 

27 

26

86 

27 

23 

28 

23 

27

Jan.

22 

20 

17 

17 

18

19 

20 

20 

81 

21

21 

SO

- 20 

20 

19

19 

«20 

21 

81 

21

21 

21 

21 

21 

20

20 

20 

20 

21 

19

ie

Feb.

19 

19 

20 

20 

20

20 

21 

21 

20 

21

21 

28 

22 

82 

22

22 

22

81 

«21 

19

19

21 

20 

19 

19

81 

28 

26

Honth

Oet 

Noi 

Dec

C

Jar 

Pel 

Mfti 

Api 

Maj 

JUT 

Jul 

Aug 

8ei

Hfater year 1940-

liar.

25 

22 

82 

29 

24

29 

28 

29 

29 

31

32 

32 

24 

25 

24

26 

31 

36 

43 

42

36 

32 

31 

31 

30

26 

28 

29 

29 

31 

53

Apr.

62 

48 

45 

48 

50

48

50 

59 

76 

S6

66 

64 

60 

51 

48

50 

50 

48 

43 

43

43 

48

46 

62 

SI

94 

116 

182 

138 

158

Secondfoot -days

1,133 

1,005 

793

21,583.0

619 

582 

939 

2,003 

16,254 

16,263 

10,675 

8,495 

3,166

55,927

Hay

162 

205 

838 

229 

247

296 

350 

390 

193 

209

986 

1,010 

965 

846 

762

755 

685 

644 

518 

536

524 

584 

620 

614 

542

506 

566 

476 

542 

530 

584

Maximum

132 

50 

28

362

22 

26 

53 

158 

1,010 

727 

570 

151 

406

1,010

June

671 

787 

560 

608 

608

584 

614 

573 

614 

542

476 

42S 

452 

422 

506

548 

584 

375 

360 

482

578 

657 

690 

475 

545

450 

510 

545 

570 

570

July

565 

550 

550 

560 

570

500 

475 

460 

425 

400

329 

321 

231 

862 

265

230 

25S 

480 

395 

420

363 

897 

25S 

240 

880

208 

198 

182 

166 

154 

14S

Minimum

15 

20 

20

7.4

17 

19 

22 

43 

162 

360 

148 

31 

30

15

Aug.

139 

18S 

119 

111 

116

10S 

SO 

80 

101 

151

101 

S6 

82 

96 

143

7S 

12S 

91 

68 

53

53 

47 

41 

37 

35

34 

32 

31 

36 

43 

37

Mean

36.5 

33.5 

25.6

59.0

20.0 

20.8 

30.3 

66.8 

524 

542 

344 

SO. 5 

106

153

Sept.

36 

34 

31 

30 

30

a34 

a32 

a35 

a37

ase

a33

a31 

a74 

a270 

126

77 

96 

119 

148 

272

152 

122 

156 

104 

92

81 

72 

79 

406 

320

Run-off In 

acre-feet

8,250 

1,990 

1,570

42,810

1,230 

1,150 

1,860 

3,970 

32,240 

32,260 

81,170 

4,950 

6,280

110,900

* Winter discharge measurement made on thla day. 

a No gage-height record, discharge computed on baals pf recorded range In stage and records for 

Navajo River at Edith, Colo.

Note.- Stage-discharge relation affected by Ice Nov. 26 to Feb. 7, Feb. 11, 14, 15.
182 SAN JUAN RIVER BASIN

Rito Blanco near Pagosa Springs, Colo.

Location.- Water-stage recorder, lat. 37°11'40", long. 106°54'20", in SWt sec. 12, T. 34 

N., R. 1 W., at road crossing 600 feet upstream from Sheep Cabin Creek and 7f miles 

southeast of Pagosa Springs. Prior to June 20, 1941, recorder 100 feet downstream at 

datum 2.0 feet lower.

Drainage area.- 23.3 square miles.

Records available.- May 1935 to September 1941.

Extremes.- Maximum discharge during year, 475 second-feet May 13 (gage height, 3.21 feet, 

site and datum then in use), from rating curve extended above 350 second-feet; minimum 

daily; 0.1 second-foot Sept. 7.

1935-41: Maximum discharge, that of May 13, 1941; no flow at times in 1939 and 1940.

Greatest flood known occurred Oct. 5,' 1911.

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

whlcn are fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

1.5 

1.1 

1.0 

6.6

6.1 

l.S 

1.6 

1.6 

1.5

1.3 

1.0 

1.0

1.0

.9 

.9 

.9 

.9 

.9

.8 

.8 

.8 

.7 

.6

.7 

3.0 

2.4 

1.7 

2.1 

1.7

Nov.

2.1 

2.4 

5.0 

l.S 

1.6

1.7 

1.8 

2.4 

2.1 

2.4

1.6 

1.6 

1.5

*2.1

2.4 

2.5 

2.6 

2.7 

2.3

2.0 

1.8 

1.7 

1.8 

2.1

1.8 

1.7 

1.7 

1.8 

2.1

Dec.

2.2 

2.2 

2.2 

2.2 

2.3

2.3 

2.2 

2.2 

2.S 

2.4

2.5 

2.4 

2.2

1.6

1.5 

2.1 

2.4 

1.8 

1.6

1.6 

1.7 

1.7 

1.8 

1.8

1.7 

1.6 

1.7 

1.7 

1.7 

1.7

Jan.

1.7 

1.6 

1.4 

1.5 

1.4

1.2 

1.2 

1.2 

1.2 

1.1

1.2 

1.2 

1.4

1.5

1.5 

«1.4 

1.4 

l.S 

1.2

1.2 

1.2 

1.2 

al.l 

al.l

al.2 

al.4 

al.S 

al.4 

1.4 

1.2

Feb.

1.1 

1.5 

1.4 

1.2 

1.4

1.6 

1.7 

1.7 

1.6 

1.6

1.7 

l.S 

2.1

2.1

2.4 

2.7 

2.4 

*2.4 

2.4

2.1 

2.7 

2.7 

2.7 

3.4

3.0 

3.7 

4.0

Month

Oct 

NOD 

Dec

0

Jan 

Feb 

liar 

Apr 

Bay 

Jun 

Jul 

Aug 

Set

fl

alendar year 194

ater year 1940-4

liar.

4.0 

3.0 

2.7 

3.7 

3.4

3.4 

3.4 

3.3

3.4 

3.3

3.1 

3.0 

3.0

2.8

2.7 

3.7 

6.1 

7.0 

*8.2

8.2 

7.8 

7.8 

7.8 

7.8

7.4 

7.4 

9.0 

9.5 

10 

17

Apr.

19 

16 

15 

16 

19

16 

18 

25 

33 

40

29 

30 

29 

23 

24

25 

25 

22 

19 

18

20 

22 

20 

26 

36

55 

91 

100 

108 

89

Secondfoot-days

50.8 

60.8 

61.4

3,648.1

40.8 

61.2 

176.0 

1,028 

6,064 

4,264 

1,580 

435.3 

287.2

14,109.5

Hay

77 

67 

9S 

91 

98

150 

182 

174 

188 

240

244 

292 

364 

368 

a290

a240 

a260 

a2SO 

a250 

a220

a!85 

a!80 

a!80 

194 

160

108 

184 

176 

173 

163 

168

Maximum

6.5 

3.0 

2.5

118

1.7 

4.0 

17 

108 

368 

186 

85 

33 

52

368

June

16S 

17S 

186 

176 

181

16S 

17S 

120 

125 

137

137 

112 

125 

128 

116

112 

108 

135 

145 

147

172 

144 

162 

176 

168

141 

125 

112 

100 

87

July

82 

79 

77 

79 

S5

S2 

72 

67 

63 

60

60 

60 

54 

51 

48

43 

43 

49 

49 

52

45 

42 

38 

37 

35

30 

25 

21 

20 

16 

16

KlnimiUD

0.6

1.5 

1.5

0

1.1 

1.1 

2.7 

15 

77 

87 

16 

1.5 

.1

.1

Aug.

15 

11 

9.4 

S.S 

9.4

13 

S.S 

18 

18 

21

16 

12 

9.4 

10 

27

23 

29 

33 

25

21

18 

16 

14 

12 

10

8.3 

7.2 

5.6 

2.2 

3.2 

1.5

Mean

1.64 

2.03 

1.98

9.97

1.32 

2.19 

5.68 

34.3 

196 

142 

51.0 

14.0 

9.57

38.7

Sept.

1.0 

.8 

.5 

.4 

.3

.2 

.1 

.2 

.3 

.3

.2

.2 

.9 

26 

9.4

3.2 

4.0 

6.6 

S.S 

19

16 

14 

19 

16 

12

10 

S.8 

10 

47 

52

Run-off in 

acre-feet

101 

121 

122

7,230

81 

121 

349 

2,040 

12,030 

8,460 

3,130 

863 

570

27,990

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for San Juan River at Fagoaa 

Springs.

Note.- Stage-discharge relation affected by Ice Nov. 12-14, 17-21, Nov. 28 to Dec. 17, Mar. 

8-12, 14, 15.
SAN JUAN RIVER BASIN 183

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

Location.- Water-stage recorder, lat. 37°05'00", long. 106°41'30",. In NWi sec. 24, T. 33 

 N., H. 2 E., on Banded Peak Ranch, half a mile downstream from Aspen Creek and 9 

miles northeast of Chromo.

Drainage area.- 69.8 square miles.

Records available.- April 1937 to September 1941.

Extremes.- Maximum discharge during year, 1,340 second-feet May 13 (gage height, 4.02 

feet); minimum daily, 15 second-feet Nov. 14.

1937-41: Maximum discharge, that of Hay 13, 1941; minimum daily, 12 second-feet 

Dec. 28, 1939.

Greatest flood known occurred Oct. 5, 1911.

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

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

Z 

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

SO

81 

22 

83 

84 

85

86 

87 

88 

89 

30 

31

Oct.

78 

61 

66 

58 

161

101 

84 

72 

64 

58

52 

48 

45 

43 

42

42 

39 

38 

36 

34

32 

31 

31 

31 

30

31 

35 

36 

38 

40 

36

Nov.

36 

35 

36 

35 

32

31 

31 

32 

34 

30

27 

17 

16 

15 

*17

20 

27 

28 

31 

35

35

36 

36 

36 

3V

38 

3V 

36 

36 

36

Dec.

38 

39 

39 

39 

39

39 

39 

40 

39 

36

39 

39 

34 

38 

25

19 

86 

86 

28 

30

33 

34 

36 

36 

33

31 

32 

34 

32 

31 

29

Jan.

27 

22 

19 

82 

25

32 

32 

32 

32 

32

32 

32 

34 

33 

30

*25 

26 

87 

28 

29

29 

29 

29 

29 

89

88 

29 

30 

30 

30 

30

Feb.

29 

28 

28 

29 

29

30 

30 

29

as

29

29 

89 

29 

29 

29

29 

30 

«30 

30 

30

30 

30 

30 

31 

31

30 

30 

32

Month

Ocl 

Hoi 

Dot

C

Jfti 

Pel 

Hai

Apr

5SJu] 

Aus 

Sei

1

11.....................................

fater year 1940-4 1...... ................

Mar.

33 

34 

34 

34 

34

34 

32 

31

30

32 

38 

34 

31 

87

28 

35 

38 

48

*45

43 

43 

40 

44 

38

38 

37 

48 

40 

44 

53

Apr.

64 

53 

49 

52 

53

52 

52 

56 

66 

80

68 

63 

61 

56 

56

56 

56 

55 

53 

49

53 

56 

56 

70 

86

99 

130 

144 

154 

172

 Secondfoot-days

1,593 

928 

1,045

29,371

893 

888 

1,136 

2.1VO 

22,971 

19.V99 

13,394 

3,844 

2,573

71,174

May

174 

185 

360 

380 

380

450 

580 

600 

690 

698

760 

1,060 

1,180 

995 

1,020

960 

976 

990 

910 

880

785 

786 

840

860 

S96

910 

890 

80S 

730 

71S 

718

Maximum

161 

38 

40

419

34 

38 

53 

1V2 

1,180 

746 

635 

888 

865

1,180

June

707 

716 

780 

702 

698

666 

725 

745 

689 

599

52V 

486 

486 

500 

588

527 

563 

630 

680 

707

730 

740 

735

735 

735

740 

730 

718 

689 

658

July

635

630 

686 

688 

688

680 

680 

550 

510

510

510 

490 

4VO 

446

419

390

414 

432 

428 

419

388 

366 

383 

320 

295

878 

250 

288 

809 

19V 

IBS

Minimum

30 

15 

19

15

19 

88 

87 

49 

174 

486 

183 

59 

48

15

Aug.

171 

160 

147 

134 

134

131 

131 

158 

168 

197

14V

134 

188 

155 

888

144 

171 

194 

114 

103

100 

88 

79 

74 

70

65 

68 

66 

70 

68 

59

Mean

51.4 

30.9 

33. V

80.8

88.8 

29.6 

36.6 

 72.3 

V41 

660 

432 

184 

85.8

195

Sept t

sv

54 

48 

46 

44

43 

48 

4V 

58 

4V

46 

48 

68

19S

110

88 

77 

81 

90 

108

130 

108 

120 

106 

94

89 

84 

V4 

139 

866

Run-off In 

acre-feet

3,160 

1,840 

2,070

68,840

1.V70 

1,640 

2,860 

4,300 

45,660 

39,870 

S6,5VO 

V,620 

5,1OO

141,800

* Winter discharge measurement made on this day.

Hpte.- No gage-height record May 3-9, July 6-13, Aug. 87, 88, Sept. 6-87; discharge computed on 

basis of records for station at Edith. Stage-discharge relation affected bjr loe Dec. 16, 16, 

Dec. 20 to Mar. 1.
184 SAN JUAN RIVER BASIN

Navajo River a.t Edith, Colo.

Location.- Water-stage recorder, lat. 37°00'10", long. 106°54'20", In NWi sec. 24, T. 32 

 N., R. 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. Prior to 

June 27, 1941, water-stage recorder at elte 250 feet upstream at 2.0 feet higher datum. 

Datum of gage Is 7,033.00 feet above mean eea level (Bureau of Reclamation bench mark).

Drainage area.- 165 square mllee.

Records available.- September 1912 to December 1914 and June 1935 to September 1941 In reports or u. s. Geological Survey. September 1912 to December 1928 and June 1935^0 

September 1941 In reporte of Colorado State engineer. September 1912 to December 1928 

In reports of New Mexico State engineer.

Average discharge.- 22 years, 188 second-feet.

Extremes.- Maximum discharge during year, 2,380 second-feet May 13 (gage height, 6.36 feet, 

elte and datum then In use), from rating curve- extended above 2,200 second-feet; minimum 

dally, 23 second-feet Nov. 13, Dec. 16.

1935-41: Maximum discharge, that of May 13, 1941; minimum dally, 19 second-feet , 

Dec. 2S, 1939.

Greatest flood known occurred Oct. 5, 1911.

RemajW.- Records good except those for periods of Ice effect, which are fair. Diversions 

aoove station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Dot.

112 

7S 

7S 

72 

150

17S 

112 

92 

S4 

74

66 

61 

56 

63 

50

48 

47 

45 

44 

45

40 

36 

35 

35 

35

36 

50 

50 

50 

56 

48

HOT.

46 

47 

49 

48 

40

45 

42 

43 

43 

44

31 

29 

23 

25 

*45

48 

60 

54 

56 

54

52 

50 

48 

46 

45

45 

44 

40 

41 

43

Dec.

44 

46

46 

46 

46

46 

45 

46 

46 

48

53 

48 

40 

40 

34

23 

44 

47 

48 

99

41 

43 

45 

46 

44

40 

44 

47 

45 

44 

48

Jan.

38 

30 

26 

28 

36

40 

38 

3S 

39 

39

38 

39 

41 

40 

38

31 

«33 

34 

36

se

39 

3S 

38 

38 

38

34 

35 

36 

41 

40 

40

Feb.

36 

34 

35 

38 

40

44 

46 

42 

42 

42

42 

42 

«42 

«48 

42

44 

44 

«46 

46 

46

46 

46 

47 

,50 

50

43 

42 

44

Month

Oct 

Not 

Dec

C

Jar 

Fet 

Mar 

Apr 

Mas 

Jur 

Jul 

Aug 

Sej

11

uar

11. ....................................

ater year 1940-4 1. ...........,,,,,,,,.,

Mar.

50

54 

50 

45 

54

47 

47 

44 

47 

42

42 

43 

49 

49 

46

48 

64 

82 

104 

111

S124 

125 

106

93 

90 

120 

139 

180 

259

Apr.

2S1 

215 

206 

224 

247

228 

247 

302 

364 

381

299 

330 

289 

228 

250

269 

279 

240 

200 

174

248 

271 

2S1 

3S4 

479

576

no

146 

775 

7Sb

Seoondf oot -days

2,014 

1,316 

1,351

37,517

1,135 

1,203 

2,576 

10,657 

37,060 

27.752 

16,4S6 

4,701 

3,887

110,138

toy

740 

912 

960 

846 

852

1,160 

1,250 

1,370 

1,470 

1,530

1,590 

1,850 

2,000 

1,960 

1,670

1,490 

1,400 

1,330 

1,160 

974

914 

974 

962 

1,030 

1,050

i;bso

1,080 

926 

S54 

87S 

818

Maxiittojn

17S 

56 

53

528

41 

50 

259 

846 

2,000 

1,420 

834 

2SB 

300

2,000

June

830 

836 

854 

848 

848

860 

926 

1,420 

1,010 

890

760 

740 

710 

710 

710

715 

7S2 

956 

1,020 

1,070

1,080 

1,070 

1,070 

1,030 

1,170

1,110 

1,070 

932 

S48 

S27

July

808 

808 

796 

S14 

S34

796 

718 

724 

748 

664

652 

640 

580 

515 

490

450 

455 

495 

470 

520

 440 

420 

372 

368 

348

3SO 

292 

268 

248 

224 

209

Minimum

35 

23 

23

23

25 

34 

42 

174 

74O 

710 

209 

78 

59

23

Aug.

197 

1S8 

176 

165 

165

165 

165 

168 

a£00 

a285

206 

162 

14S 

152 

284

176 

173 

191 

148 

.130

125 

US 

110 

100 

94

86 

S4 

7S 

82 

96 

S4

Mean

65.0 

43.9 

43;6

103

36.6 

43.0 

S3.1 

355 

1,195 

925 

532 

152 

130

302

Sept.

78 

76 

72 

68 

68

65 

62 

64 

70 

66

62 

59 

igQ

» 

122 

110 

114 

140 

212

230 

165 

197 

168 

145

130 

120 

114 

300 

296

Run-off In 

acre-feet

3,990 

2,610 

2,680

74,380

2,250 

2,390 

5,110 

21,140 

73,510 

55,050 

32,700 

9,320 

7,710

218,500

* Winter discharge measurement made pn this day.

6 Ho gage-heigjft record; discharge computed on laaala of recorded range of Btage and records for 

Rio Blanco near Pagosa Springs, Code.

HQte.- Stage-discharge relation affected fey lc« Soy. 14-26, Dec. 17 to Feb. 22.
SAN JUAN RIVER BASIN 185

Little Navajo River at Chromo, Colo.

Location.- Water-stage recorder, lat. 37°02'lO", long. 106°50'35", In SEi sec. 4, T. 32 

H., K. IE., at highway bridge at Chromo, a quarter of a mile upstream from mouth. 

Prior to June 20, 1941, water-stage recorder 20 feet downstream at same datum. Datum 

of gage Is 7,288.52 feet above mean sea level, datum of 1929.

Drainage area.- 21.9 square miles.

Records available.- Hay 1935 to September 1941.

Extremes.- Maximum discharge during year, 39& second-feet May 14 (gage height, 4.32 feet, 

site tnen In use), from rating curve extended above 250 second-feet; minimum dally, 0. 

second-foot Oct. 2.

1935-41: Maximum discharge, that of May 14, 1941; no flow Aug. 31, 1938, July 7, 

1939.

Greatest flood known occurred Oct. 5, 1941.

Remarks.- Records fair. .Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12

13 

14 

15

16

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

1.0 

.6 

1.3 

1.5 

4.7

5.3 

3.0 

2.4 

2.0 

1.9

1.7 

1.6 

1.6 

1.6

1.5

1.3 

1.4 

1.2 

1.2 i.e

1.2 

1.2 

1.1 

1.1 

1.1

1.1 

1.9 

1.9 

1.7 

1.5 

1.5

HOT.

1.4 

1.6 

1.7 

2.6 

2.0

2.2

2.0 

2.0

l.S 

1.3

1.0 

l.S 

3.4 

2.6 *e.4

2.6 

2.8 

3.0 

3.2 

3.6

2.S 

2.S 

2.6 

2.9

3.1

3.0 

2.7 

2.6 

2.8 

3.0

Dec.

3.1 

3.0 

3.0 

3.0 

3.1

3.0 

3.0 

3.0 

3.1 

3.2

3.0 

2.S 

2.7 

2.5 

2.3

2.4 

2.7 

3.2 

3.0 

2.7

2.6 

2.5 

2.S 

2.9

3.1

3.1 

3.0 

2.9 

3.0 

3.0 

3.2

Jan.

2.6 

2.6 

2.5 

2.6 

2.7

3.2 

3.2 

3.2 

3.0 

3.0

3.2 

3.2 

3.4 

3.4 

3.4

«3.4 

3.2 

3.0

3.0 

3.0

3.0 

3.2

3.0 

3.0 

3.0

3.0 

3.2 

3.0 

4.2 

4.7 

3.6

Feb.

3.2 

3.6 

3.0 

3.0 

3.0

3.0 

3.0 

3.0 

2.6 

2.2

2.6 e.4

2.4 

3.4 

4.2

S.S 

4.9 

«3.4

3.6 

3.6

3.4 

2.S 

2.S 

3.4 

4.2

4.3 

6.2

S.4

Month

Dot 

Nci

De< 

c

Jar 

Pel 

Hu

Api Ma:

Jui 

Jul 

Auj 

Sej

7

'alendar year 194o.... v .... ............

 11 .

Ly..... .................................

later year 1940-4

liar.

9.3

6.4 

6.0 

7.4 

6.4

6.2 

6.9 

9.6

S.4 

11

9.3 

10 

5.5 

5.1 

S.S

5.8 

9.2 

13 

1620

16 

18 

26 

22 

18

16

16 

23

26 

36 

69

Apr.

67 

44 

39 

47 

51

40 

41 

60 

75

73

44 

73 

47 

S3 

36

36 

39 

31 

25 

23

29 

32

39 

51 

94

190 

193 

163 

157 

122

Secondf cot-days

63. 3 

73.3 

90.0

2,032.6

97.7 

99.4 

465.4 

1,994 

6,590 

2,353 

649.9 

158.4 

202.2

12,826.6

May

128 

190 

190 

196 

214

242 

SOS 

287 

298 

318

290 

287 

308 

326

326

294 

290 

262

200 

147

147

190 

166 

176 

157

141

134 

109 

97 

94

78

Maximum

5.3 

3.6 

3.2

42

4.7 

S.4 

69 

193 

326 

252 

31 

8.2 

29

326

June

67 

62 

64 

56 

56

55 

97 

252

179 

166

125 

97 

35 

78 

71

71 

75 

82 

80 

80

60 

48 

39 

72 

49

29

39 

51 

38 

SO

July

28 

30 

28 

27 

31

22 

21 

23 

25 

25

24 

24 

22 

21

19

17 

16 

14 

a24 

a28

a26 

a24 

a22 

a20

19

17 

15 

13 

10 

7.9 

7.0

Minimum

0.6 

1.0 

2.3

.1

2.5 

2.2 

5.1 

23 

 78 

29 

7.0 

2.2 

1.8

.6

Aug.

6.7 

5.3 

5.0 

4.6 

4.8

*6.8 

aS.2 

6.1 

a7.6 

a8.2

aS.O 

aV.S 

a7.6 

a7.2 

a6.7

6.4 

6.1 

5.8 

6.0 

4.0

4.2 

4.2

S.S 

3.4 

3.1

3.1 

2.7 

2.5 

2.4 

2.4 

2.2

Mean

1.72 

2.44 

2.90

5.69

3.15 

3.56 

15.0 

66.5 

213 

78. 4 

21.0 

5.11 

6.74

35.1

Sept.

2.2

1.8 

l.S 

1.8 

1.9

1.9 

1.9 

1.9 

1.9 

1.9

1.9 

2.0 

3.1 

11 

7.9

5.3 

5.0 

aV.O 

all

16

10 

10 

12 

9.3 

7.0

5.5 

5.2 

5.5 

29

19

Run-off In 

aere-feet

106 

145 

179

4,130

194 

197 

923 

3,960 

13,070 

4.670 

1,290 

314 

401

25,450

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of one discharge measurement, recorded rang* 

of stage, and records for Elto Blanco near Pagoaa Springs, Colo.

Hote.- Stage-discharge relation affected by loe Hoy. 23 to Dec. 9, Dec. 12-23, Jan. 3-5, Feb. 23-27.
186 SAN JUAN RIVER BASIN

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.,

 R. 3 W., a quarter of a mile downstream from Bridge ranger station, 1 mile downstream 

from Middle Fork, and 15 miles northwest of Pagosa Springs.

Drainage area.- 82.3 square miles.

Records available.- April 1937 to September 1941 (discontinued).

Extremes.- Maximum discharge during year, 1,570 second-feet June 23 (gage height, 4.41

 feet), from rating curve extended above 800 second-feet; minimum not determined, 

occurred during period of ice effect.

1937-41: Maximum discharge, that of June 23, 1941; minimum not determined. 

Greatest flood known occurred Oct. 5, 1911.

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

which are fair. A few small divereions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29

30 

31

Oct.

ISO 

137 

116 

98 

540

297 

202 

148 

126 

106

91ei

73 

68 

64

60 

55 

51 

49 

45

43 

40 

39 

#39 

36

36 

42 

40 

40 

41 

36

Nov.

34 

36 

37 

36 

30

37 

35 

36 

35 

33

24 

27 

27 

31 

41

43 

#39 

32 

30 

31

31 

30 

28 

28 

27

27 

27 

25 

25 

26

Dec.

26

Jan.

> 18

Feb.

20

Month

Oct 

No? 

Dec

C

Jan 

Fet 

Mar 

Api 

Itoj 

Jun 

Jul 

Aug 

Sep

fl

alendar year 194 0......................

ater year 1940-4

liar.

20 

19 

IS 

17 

IS

16 

15 

16 

18 

15

17 

18 

19ie is

20 

21 

a24 

aE8 

a33

a32 

a30 

33 

a36 

a32

a33 

a34 

a36

a3S 

40 

a47

Apr.

a64 

a62 

a57 

a63 

a61

58 

63 

75 

95 

104

80 

70 

69 

69 

75

74 

72 

63 

58 

55

61 

58 

54 

76 

116

#145 

226 

250 

320 

3S2

Secondfoot-days

2,819 

947 

S06

25,222

558

560 

779 

3,065 

21 ,179 

24,155 

16,407 

3,292 

3,803

78,370

May

367 

490 

406 

478 

49S

532 

565 

622 

654 

710

81C 

S9E 

976 

920 

790

731 

770 

795 

755 

6S2

650 

641 

641 

750 

7S5

S10 

790 

71S 

641 

641 

677

Maximum

340 

43

414

47 

3S2 

975 

1,300 

1,060 

S57 

327

1,300

June

644 

'765 

740 

740 

825

731 

S25 

890 

672 

574

499 

471 

471 

495 

551

605 

686 

S15 

955 

1,060

1,050 

1,020 

1,150 

1,300 

1,150

1,050 

975 

915

soo

731

July

726 

690 

713 

760 

1,060

770 

695 

686 

623 

628

618 

677 

592 

515 

459

451 

463 

596 

596 

569

471 

419 

371 

427 

427

341 

292 

235 

202 

17S 

157

Minimum

36

24

_

15 

53 

367 

471 

157 

50 

26

-

Aug.

136 

120 

115 

108 

110

138 

127 

125 

130 

122

113 

102 

96 

96 

127

257 

169 

138 

113 

102

102 

90 

83 

74 

70

62 

57 

52 

52 

57 

50

Mean

90.9 

31.6 

26.0

68.9

le.o

20. 0 

E5.1 

10E 

6S3 

805 

529 

106 

127

215

Sept.

42 

42 

40 

40 

39

37 

29 

30 

31 

29

27 

26 

43 

125 

96

70 

62 

81 

120 

327

324 

327 

327 

250 

226

190 

154 

143 

285 

241

Run-off in 

acre-feet

5,590 

1,880 

1,600

50,030

1,110 

1,110 

1,550 

6,080 

42,010 

47 ,910 

32,540 

6,530 

7,540

155,400

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of records for station near Piedra.

Note.- Stage-discharge relation affected by ice Nor. 14-17, Nor. 26 to Bar. 14.
SAN JUAN RIVER BASIN 187

Piedra River near Piedra, Colo.

Location.- Water-stage recorder, lat. 37°14', long. 107°aO', in sec. 8, T. 34 N., R. 4 W.,

 at crossing' of U. S. Highway 450, three-quarters of a mile upstream from Yellow Jacket 

Creek and 14 miles north of Piedra. This station is li miles downstream from station 

used Mar. 19, 1940, to May 12, 1941.

Drainage area.- 371 square miles.

Records available.- November 1911 to July 1912, October 1939 to September 1941.

Extremes.- Maximum discharge during year, 5,400 second-feet May 13 (gage height, 8.0

 feet, from high-watermarks, present site and datum), from rating curve extended above 

3,040 second-feet; minimum daily, 46 second-feet Jan. 18.

1911-12, 1939-41: Maximum discharge, that of May 13, 1941; minimum dally, 23 secondfeet Dec. 20, 1939.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records excellent except those for periods Dec. 16 to Feb. 16 and Apr. 28 to

 Sept. 30, which are fair. Chain gage read twice daily Dec. 16 to Feb. 16, and May 25 

to Sept. 26. Diversions above etatlon for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

S

6 

7 

8 

9 

10

11 

12 

13 

14 

IB

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

464 

352 

302 

259 

542

822 

614 

412 

348 

292

252 

224 

205

1S7 

171

159 

149 

158 

189 

122

118 

112 

106 

106 

102

100 

159 

124 

116 

124 

108

HOT.

102 

104 

108 

108 

85

100 

94 

98 

96 

100

56 

69 

60 

68 

66

76 

87 

90 

96 

92

98 

92 

90 

83 

87

85 

90 

62 

70 

87

Dec.

87 

89 

83 

83 

81

87 

85 

81 

83 

102

100 

87 

74 

62 

62

59 

74 

88 

81 

76

b70 

b74 

76 

80 

80

b70 

b64 

b74 

SI 

60 

76

Jan.

72 

63 

b54 

b50 

57

63 

64 

76 

76 

69

61 

78 

70 

68 

66

b52 

b48 

»b46 

b52 

b60

66 

66 

66 

64 

64

61 

59 

59 

78 

69 

70

Feb.

64 

61 

66 

76 

66

68 

74 

66 

66 

68

68 

69 

66 

68 

75

69 

«81 

83 

87 

83

87 

81 

83 

90 

90

68 

6E 

76

Month

Oct 

Hoi 

Dec

C

Jar 

F«l 

Hat

Apr 

Maj

Jur 

Ju3 

Auj 

Sej

7

alendar year 19< O.. ....................

ater year 1940-4

Mar.

94 

93 

90 

81 

98

76 

79 

72 

86

68

77 

87 

94 

89 

87

S7 

102 

120 

133 

159

154 

149 

161 

176 

147

149 

154 

164 

174 

176 

229

Apr.

387 

302 

275 

256 

288

262 

262 

295 

368 

460

392

341 

341 

312 

334

334 

341 

309 

275 

252

292 

285 

278 

305 

460

600 

945 

1,260 

1.480 

1,640

Secondfoot-days

7,318 

2,568 

2,449

71,438

1,954 

2,064 

3,714 

13,881 

91,990 

84,770 

40.173 

9,716 

8,743

269,340

May

1,640 

2,110 

2,110 

2,440 

2,560

2,780 

3,040 

3,260 

3,420 

a3,600

aS,900 

a4,150 

a4,350 

a4,400 

a3,750

aS,300 

a3,360 

a3,500 

aS,200 

a2,960

aS.700 

a2,600 

a2.450

as.eoo

3,000

3,010 

2,640 

2,360 

2,260 

2,290 

2,180

Maximum

822 

108 

102

1,030

76 

90 

229 

1,640 

4,400 

4,220 

2,600 

638 

776

4,400

June

2,190 

2,180 

2,660 

2,380 

2,210

2,320 

2,880 

3,140 

2,600 

2,550

1,S40 

1,620 

1.730 

1,860 

2,960

2,190 

3,090 

3,390 

3,640 

3,380

3,330 

3.720 

3,780 

4,020 

4,220

3,450 

2,830 

2,770 

2,710 

2,640

July

2,500 

2,110 

2,120 

a2,230 

a2,500

2,110 

1,930 

1,830 

1,660 

1,640

1,540 

1,380 

1,210 

1,140 

1,090

1,090 

1,100 

1,090 

1,090 

1,110

986 

872 

878 

742 

788

764 

688 

610 

520 

485 

420

Minimum

100 

50 

59

27

46 

61 

68 

252 

1,640 

1,620 

420 

138 

95

46

Aug.

400 

366 

355 

346 

342

390 

420 

385 

430 

380

355 

324 

274 

270 

430

638 

430

370 

346 

314

288 

257 

238 

222 

197

175 

160 

152 

138 

175 

155

Mean

236 

85.6 

79.0

195

63.0 

73.7 

120 

463 

2,967 

2,326 

1,296 

313 

291

738

Sept.

136 

128 

122 

115 

US

109 

105 

111 

113 

105

101 

95 

105 

160 

292

233

169 

274 

385 

676

595 

546 

776 

520 

465

415 

348 

314 

590 

535

Run-off In 

acre-feet

14,520 

5,090 

4,860

141,fOO

3,880 

4,090 

7,370 

27,530 

182,500 

168,100 

79,680 

19,270 

17,340

534,200

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of one discharge measurement and records for 

the San Juan River at Pagosa Springs, Colo. 

b Stage-discharge relation affected by ice.

461676 O-42-13
188 SAN JUAN RIVER BASIN

Williams Creek near Bridge ranger station, near Pagosa Springs, Colo.

Location.- Water-stage recorder, lat. 37°27'45", long. 107°11'46", in sec. J.O, T. 37 N.,

 R. 3 W., 2ir riiles north of Bridge ranger station, 3i miles upstream from mouth, and 

17 miles northwest of Pagosa Springs.

Drainage area.- 43.7 square miles.

Records available.-May 1937 to September 1941 (discontinued).

Extremes.- Maximum discharge during year, 940 second-feet May '11 (gage height, 3.68 feet),

 from rating curve extended above 450 second-feet; minimum daily recorded, 11 secondfeet Sept. 6, 13, but may have been less during period of ice effect.

1937-41: Maximum discharge, that of May 11, 1941; minimum not determined. 

Greatest flood known occurred Oct. 5, 1911. .

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

 whlcn are fair. No diversions above station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

80

21 

22 

23 

24 

25

26 

87 

88 

29 

30 

31

Oct.

S4 

6Y 

60 

52 

140

140 

95 

SO 

68 

66

4S 

41 

38 

35 

32

29

28 

26 

23 

21

20 

19 

19 

*19

19

81 

28 

25 

24 

24 

22

Nov.

21 

21 

21 

21 

19

19 

19 

19 

19 

17

17

(*) 

17

Dec.

14

Jan.

12

Month

Dot 

Not 

Dec

0

Jar 

Fet 

Mar 

Apr

Jur 

Jul 

Auf 

Sej

fl

Feb.

' 13

11. ....................................

ater year 1940-41

Mar.

16

Apr.

30

*53

65 

90 

108 

149 

808

Secondfoot-days

1,408 

536 

434

18,711.7

378 

364 

496 

1,387 

18,S77 

11,995 

8,382 

1,171 

1,857

41 ,871

May

826

3OO 

8S5 

350 

400

366 

438 

476 

526 

638

606 

594 

58S 

538 

449

416 

444 

43S 

444 

394

366 

366 

3$6 

416 

405

405 

400 

360 

S40 

336 

330

Maximum

140

180

202 

606 

554 

493 

100 

161

606

June

330 

330 

356 

340 

340

335 

394 

427 

366 

306

860 

838

855 

885 

330

378 

416 

449 

471 

498

4S2 

498 

548 

564 

493

 520 

498 

488 

427 

394

July

383 

383 

388 

410 

493

488 

400 

383 

340 

340

340 

372 

340

£95 

270

856 

838 

865 

2SO 

855

814 

174 

167 

186 

174

140 

126 

105 

92 

80 

70

Minimum

19

-

286 

238 

70 

17 

11

-

Aug.

68 

54 

48 

SO 

44

49 

47 

40 

40 

39

36

30 

28 

84 

48

100 

64 

48 

38 

34

% 

96

23 

22

28 

80 

17 

17 

17 

87

Mean

45.2 

17.9 

14.0

34.7

12.0 

13.0 

16.0 

46.2 

415 

400 

270 

37.8 

61.9

113

Sept.

84 

16 

14 

12 

12

11 

12 

12 

13 

13

12 

11 

27 

66 

59

46 

43 

. 70 

96 

161

168 

166 

146 

IBS 

108

84 

70 

64

120 

108

Run-off In 

acre-feet

8,780 

1,060 

861

26,810

738 

728 

984 

2,760 

25,540 

83,790 

16,630 

2,380 

3,680

SI ,860

* Winter discharge measurement made on this day.

Note.- No gage-height record, Nor. 12 to Apr. 24: discharge c 

and records for Fledra River near Piedra. Stage-discharge rela 

during most of period of no gage-height record.

. computed on basis of weather records 

ilatlon probably affected by Ice
SAN JUAN RIVER BASIN 

Wemlnuche Creek near Bridge ranger station, near Pagosa Springs, Colo.

189

Location.- Water-stage recorder, lat. 37°28'15", long. 107°14'00", in sec. 5, T. 37 N.,

 R. a W., 3| miles northwest of Bridge ranger station, 5 miles upstream from mouth, 

and 19 miles northwest of Pagosa Springs.

Drainage area.- 53.4 square miles.

Records available.- April 1937 to September 1941 (discontinued).

Extremes.- Maximum discharge during year, 867 second-feet May 13 (gage height, 5.34 feet),

 from rating curve extended above 500 second-feet; minimum daily not determined. 

1937-41: Maximum discharge, that of May 13, 1941; minimum not determined. 

Greatest flood known occurred Oct. 5, 1911.

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

 which are fair. A few diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

2S 

29 

30 

31

Oet.

102 

7S 

71 

59 

140

140 

108 

85 

77 

66

58 

52 

46 

43 

38

36 

33 

30 

29 

27

24

21 

21 

«21 

21

23 

30 

27 

25 

26 

20

NOT.

20 

20 

21 

21 

17

19 

IS 

19 

21 

22

(*) 

16

Dee.

14

Jan.

12

Feb.

> 15

Month

Oct 

Noi 

D»(

(

Jai 

FeJ 

Mai

to3

Jui 

Ju] 

Auj 

Sei

1

luary

 11. .

later jeer 1940-4

Mar.

ie

Apr.

34 

32 

31 

30 

33

30 

24 

27 

' 33 

45

37 

34 

32 

31 

33

33 

33 

30 

27 

25

28 

27 

26 

40 

75

100 

135 

175 

195 

225

Secondfoot -days

1,577 

518 

434

13,346.2

372 

420 

558 

1,660 

14 ,466 

14 ,742 

9,285 

2,020 

2,026

48,078

May

230 

260 

285 

335 

365

458 

415 

470 

526 

558

627 

711 

765 

717 

591

505 

515 

500 

452 

430

375 

375 

392 

448 

498

488 

505 

460 

41S 

408 

385

IbucloKus

140

186

225 

765 

678 

567 

120 

208

765

June

408

420 

43S 

452 

420

410 

485 

531 

480 

348

300 

288 

318 

370 

415

468

520 

609 

678 

657

660 

663 

669 

669 

615

588 

522 

515 

458 

428

July

410 

3S5 

382 

398 

567

446 

392

405 

365 

340

340 

380 

340 

382 

345

332 

330 

322 

315 

280

232 

208 

195 

192 

220

180 

164 

146 

127 

114 

102

Minimum

20

-

24 

230 

288 

102 

31 

17

-

Aug.

94

87 

81 

7S 

71

74 

81 

74 

90 

81

71 

62 

54 

53 

 82

120 

97 

83 

68 

63

59 

57 

50 

42 

38

36 

33 

32 

31 

42 

36

Mean

50.9 

17.3 

14.0

36.5

12.0 

1S.O 

18.0 

55.3 

467 

491 

300 

65.2 

6V. 5

132

Sept.

34 

33 

30 

27 

24

23 

22 

22 

23 

21

19 

17 

32 

63 

47

35 

34 

70 

74 

123

114 

158 

208 

140 

118

97

SI 

69 

132 

136

Run-off In 

acre-feet

3,130 

1,030 

861

26,430

738 

833 

1,110 

3,290 

28,690 

29,240 

18,420 

4,010 

4,020

95,370

* Winter discharge aea&urelhent bade oa this day.

Mote.- Ho gage-height record det. 36, Apr. 13 to Hay 5| Aug. 9-15, 26-29, Sept. 8-10; discharge 

computed on basis of reeerds for Ptttdra Hirer near Piedra. Stage-discharge relation affecte

Ice Nor. 11 to Apr. 4<

cted 197
190 SAN JUAN RIVER BASIN

Los Plnos River below Snowsllde Canyon, near Wemlnuche 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

in,.', 00 feet downstream from Snowslide Canyon, 3* miles south of Wemlnuche Pass, 

and 7 miles southwest of Rio Grande Reservoir Dam.

Bralnage area.- 23.8 square miles.

Records available.- October 1937 to September 1941 (no winter records).

Extremes.- Maximum discharge during year, 585 second-feet June 23 (gage height, 3.98 

feet), from rating curve extended above 375 second-feet: minimum not determined, 

occurred during period of no record.

1937-41: Maximum discharge, 650 second-feet May 29, 1938 (gage height, 3.26 feet), 

from rating curve extended above 300 second-feet; minimum not -determined, occurred during period of no record.

Ren^.rks '~ ?ecords good except those for period of no gage-height record, which are poor. 

TWO small diversions above station from Los Plnos River Basin to Rio Grande Basin.

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13

14

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

4S 

40 

37 

32 

67

58 

47 

42 

40 

35

32 

29 

27 

26 

25

23 

22 

21 

20 

20

19 

17 

16 

17 

17

15 

13 

20 

23 

17 

IS

Discharge, In second-feet, water year October 1940 to September 1941

NOT.

14 

12 

9.0

7.S

Dec. Jan. Feb.

Month

Dot 

NOT

Dec

C 

Jaa

Mar 

Apr

Jun 

Jul 

Auff 

Sep

alendar year

11.....................................

«;;:::::::::::::

ater year

Mar. Apr.

6econdfoot-daya

883

-

5,426 

8,944 

5,472 

844 

1,148

-

Hay

 175

M«1MU»

67

-

470 

336 

42 

170

-

June

ISO 

210 

230 

255 

260

260 

245 

230 

210 

190

160 

140 

160 

200 

230

270 

320 

360 

410 

420

430 

460 

470 

440 

420

405 

395 

376 

326 

302

Minium

15

-

14C 

41 

IE 

IS

-

July

292 

284 

2S2 

284 

336

274 

264 

262 

226 

226

230 

244 

208 

188 

172

162 

150 

144 

164 

142

126 

120 

113 

115 

102

87 

77 

64 

56 

51 

47

Aug.

42 

33 

36 

35 

34

35 

35 

34 

35 

32

30 

28 

26 

27 

37

42 

32 

27 

24 

22

21 

21 

19

IS 

IS

16 

15 

15 

17 

IS 

15

Mean

S 28.5

-

176 

> 298 

177 

i 27.2 

38.3

-

Sept.

15 

14 

14 

14 

13

13

12 

12

12

12 

12 

20 

27 

19

16 

19 

46 

32 

43

33

170 

104 

S2 

69

62 

64 

64 

79 

64

Run-off In 

acre-feet

1,760

-

10,76O 

17,740 

10,860 

1,670 

2,280

-

Hoto.- No gage-height record May 1 to June 27) discharge ec*puted on basis of reeord far Anlnas 

IVWP at Howardsvllle.
SAN JUAN RIVER BASIN 

Valleclto Reservoir near Bayfleld, Colo.

191

Location.- Float gage, lat. 37°23', long. 107°34', In sec. 19, T. 36 N., R. 6 W., at

 Valleclto Dam on Los Plnos (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 to September 1941.

Extremes.- Maximum contents during year, 64,670 acre-feet July 1 (elevation, 7,639.8

 feet); no available storage Mar. 31.

Remarks.- Dam completed by Bureau of Reclamation In March 1941. Capacity of reservoir,

 126,Ji80 acre-feet between elevation 7,580 (sill of outlet gate) and 7,665 feet (crest 

of spillway). Dead storage, 3,395 acre-feet. Water Is used for Irrigation in Los 

Plnos River Basin. ,

Cooperation.- Records furnished by State engineer's office.

Capacity table (elevation. In feet, usable capacity, In acre-feet) 

(Prepared by Bureau of Reclamation)

7,580

7,585

7,590

7,595

7,600

1,885

4,115

6,790

9,980

7,605 13,790

7,610

7,615

7,620

7,625

7,630

18,360

23,745

29,995

37,265

45,595

7,635 54, f

7,640

7,645

7,660

7,655

7,660

65,095

76,090

87,780

100,080

112,920

7,665 126,280

Elevation and contents, Mar. 31 to Sept. SO, 1941

Date

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

Elevation 

(feet>

"7 620 4

7

azO n

7,634.03

Contents 

(acrefeet)

52, 5SO

Change In 

contents 

during 

month 

(acre-feet)

7

fta.fl

8,210
192 SAN JUAN RIVER BASIN

Los Pinos River near Bayfleld, 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 1941 in reports of U. S. Geological Survey, 

uctooer isay to September 1941 (at present site) and May to September 1926 (at site 2 

miles upstream) in reports of State engineer.

Average discharge.- 14 years, 361 second-feet.

Extremes.- Maximum discharge during year, 2,270 second-feet July 5 (gage height, 5.00

reet); minimum dally, 3.2 second-feet Feb. 11 (result of storage in Vallecito Reservoir).

1926-41: Maximum dally discharge, 5,070 second-feet May 26, 1926; minimum daily, 

that of Feb. 11, 1941; minimum dally (prior to construction of Vallecito Reservoir), 

38 second-feet Dec. 21, 22, 1937.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good except those for period Oct. 1 to Feb. 28, which are fair. Natural 

regulation by many lakes and storage In Vallecito Reservoir (see page 191 ). Diversions 

above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

612 

606 

565 

510 

504

720 

741 

631 

618 

554

499 

463 

425 

388 

357

328 

305 

387 

267 

257

244

231 

220 

211 

203

200 

222 

217 

197 

195 

200

Nov.

190 

184 

179 

179 

167

162 

157 

155 

150 

150

136 

134 

123 

US 

111

115 

117 

121 

132 

134

129 

125 

123 

121 

121

119 

119 

115 

113 

113

Dec.

Ill 

109 

109 

104 

102

102 

93 

104 

115 

117

123 

125 

107 

104 

92

82 

93 

102 

104 

98

97 

97 

97 

100 

104

92 

88 

92 

95 

93 

102

Jan.

102 

88 

84 

78 

75

76. 

80 

78 

81 

31

84 

86 

87 

86 

87

80 

75 

75 

78 

82

36 

84 

86 

82 

82

75 

72 

72 

74 

82 

81

Feb.

73 

72 

70 

69 

70

42

39 

62 

80 

6.8

3.2 

32 

18 

4.6 

16

18 

18 

21 

28 

44

52 

53 

56 

76 

76

102 

127 

8.0

Month

Oct 

Non 

Dec

C

'Jar 

Pel 

Mar 

Apr 

Maj 

Jur 

Ju] 

Aus 

Sej

Hrater year 1940-

Mar.

392 

39 

10 

22 

. 208

206 

190 

179 

164 

155

143 

132 

129 

132 

20

150 

152 

169 

155 

143

143 

141 

148 

157 

143

132 

132 

134 

138 

141 

152

Apr.

184 

192 

190 

184 

190

187 

187 

195 

206 

228

247 

247 

241 

228 

225

226 

228 

228 

217 

206

211 

217 

208 

206 

220

254 

313 

370 

415 

473

Seeondfoot-days

12,027 

4,107 

3,158

85,827

2,519 

1,341.6 

4,451 

7,122 

44,929 

54,290 

50,049 

14,372 

9,093

207,458.6

May

542 

642 

700 

824

873

930 

983 

1,070 

1,180 

1,280

1,370 

1,570 

1,770 

1,870 

1,920

1,950 

1,950 

1,910 

1,950 

1,910

1,840 

1,720 

1,610 

1,610 

1,580

1,560 

1,520 

1,470 

1,570 

1,650 

1,600

Maximum

741 

190 

125

1,090

102 

127 

392 

473 

1,950 

2,170 

2,200 

606 

439

2,200

June

1,530 

1,520 

1,600 

1,620 

1,580

1,500 

1,630 

1,700 

1,650 

1,730

1,440 

1,780 

1,800 

1,720 

1,700

1,740 

1,780 

1,770 

1,810 

1,900

1,920 

1,960 

2,070 

2,060 

2,090

2,040 

2,100 

2,140 

2,140 

2,170

July

2,010 

2,170 

2,160 

2,170 

2,200

2,200 

2,170 

2,110 

2,170 

2,130

2,150 

2,190 

2,170 

2,110 

1,860

1,600 

1,200 

1,460 

1,330 

1,220

1,210 

1,200 

1,130 

1,100 

1,110

1,110 

1,110 

894 

901 

817 

687

Minimum

195 in

82

10

72 

3.2 

10 

184 

542 

1,440 

687 

411 

225

3.2

Aug.

600 

606 

600 

576 

537

537 

531 

478 

439 

439

430 

425 

425 

425 

430

425 

425 

425 

425

444

444 

444 

444 

444 

444

434 

485 

411 

415 

411 

434

Mean

388 

137 

102

234

81.3 

47.9 

144 

237 

1,449 

1,810 

1,614 

464 

303

568

Sept.

434 

439 

411 

430 

430

430 

430 

340 

287 

287

287 

287 

287 

287 

287

287 

887 

287 

247 

228

225 

231 

231 

234 

234

234 

234

238 

241 

302

Run-off In 

acre-feet

23,860 

8,150 

6,260

170,200

5,000 

2,660 

8,830 

14,130 

89,120 

107,700 

99,270 

. 28,510 

18,040

411,500
SAN JUAN RIVER BASIN 193

Los Plnos River at Ignaclo, Colo. 

(Locally known as Pine River)

Location.- Water-stage recorder, lat. 37°07'45", long. 107°37'50", In sec. 5, T. 33 N., 

A. 7 vi., three-quarters of a mile upstream Jrom Ignaclo and about 2 miles upstream 

from Rock Creek.

Drainage area.- 448 square miles.

Records available.- April 1899 to October 1903, September 1910 to December 1914 and

October 1930 to September 1941 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.- 28 years (1910-11, 1913-40), 373 second-feet, prior to completion of 

vallecitos Dam.

Extremes.- Maximum discharge during year, 3,860 second-feet May 4 (gage height, 5.33 

feet), from rating curve extended above 3,000 second-feet by logarithmic plotting; 

mini mm dally, 44 second-feet Feb. 11.

1910-14, 1930-41: 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 dally discharge observed, 0.1 second-foot Aug. 11, 1913. 

Greatest flood known occurred Oct. 5, 1911 when gage was destroyed.

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

which are fair. Flow regulated by Vallecltos Reservoir.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

as

24

25

28

27

28

29

30

31

Oct.

475

480

445

390

390

550

592

550

496

445

395

354

317

285

254

234

208

189

175

164

148

146

133

124

117

108

143

153

178

151

119

Nov.

124

148

148

148

138

129

129

124

119

129

121

*115

bllO

blOO

WO

blOO

106

111

146

148

136

»136

141

136

133

131

129

129

121

124

-

Dec.

121

121

119

117

117

*117

117

115

115

117

131

136

131

bllO

blOO

b80

*blOO

b!20

bllO

bllO

blOO

bllO

bllO

1)120

133

b!20

blOO

bllO

119

131

133

Jan.

129

*121

blOO

b80

b90

blOO

b90

b90

blOO

*blOO

blOO

IDS

111

108

106

blOO

*b90

b90

blOO

blOO

111

106

111

blOO

»111

blOO

blOO

102

115

121

119

Feb.

Ill

blOO

b90

104

102

*102

85

74

104

88

44

54

72

60

50

64

70

81

104

119

156

159

156

184

184

166

270

138

-

-

Month

October ....................................

November ...................................

December . ..................................

Calendar year 1940 ......................

January. ............................. .....

February. ..................................

March. .....................................

April. .....................................

May. .......................................

June .......................................

July .......................................

August .....................................

September. ...................... ..........

Water year 1940-41 ......................

Mar.

307

351

141

117

230

2S5

262

237

230

20S

195

195

201

198

195

224

361

414

420

35S

386

390

470

634

410

345

329

350

372

386

435

Apr.

634

538

485

435

465

415

400

430

470

526

538

557

538

460

445

460

455

465

430

400

460

662

520

480

532

754

940

1,220

1,070

1.100

Secondfoot-days

8,908

3,799

3,590

53,457.5

3,209

3,091

9,636

17,284

63, 310

54,310

40, 820

5,239

3,981

217,177

-

May

1,240

1,910

1,550

2,880

1,970

1.S30

1,850

1,920

2,020

2,120

2,260

2,290

2,540

2,620

2,540

2,450

2,370

2,370

2,370

2,230

2,060

2,080

1,950

1,850

1,780

1,730

1,700

1,660

1,620

1,840

1,690

Maximum

592

148

136

714

129

270

634

1,220

3,880

2,070

2,060

262

261

2,880

June

1,640

1,510

1,490

1,560

1,490

1,430

1,570

2,020

1,840

2,070

1,730

2,040

2,010

1,840

1,740

1,710

1,740

1,700

1,700

1,780

1,760

1,810

1,940

2,070

2,040

1,940

2,000

2,060

2,040

2,020

-

Minimum

10S

90

80

1.9

80

44

117

400

1,240

1,430

368

104

54

44

July

1,910

2,060

2,060

2,040

2,020

2,010

1,980

1,950

1,970

1,920

1,910

1,910

1,900

1,840

1,690

1,410

826

1,030

985

810

7S6

762

- 746

613

634

627

620

538

465

410

368

Aug.

262

237

244

220

159

200

175

13S

138

204

181

172

164

153

166

20S

198

1S1

156

161

159

156

153

153

151

146

136

119

124

121

104

Mean

287

127

116

146

104

110

311

576

2,042

1,810

1,317

169

133

595

Sept.

106

176

218

117

126

126

131

131

72

64

62

54

76

119

108

96

102

124

136

113

a200

a!70

181

148

141

141

158

146

261

204

~

Run-off in 

acre-feet

17,670

7,540

7,120

106, 100

6,360

6,130

19,110

34, 28O

125,600

107,700

80,970

10,390

7,900

430,800

» Winter discharge measurement made on this day.

a No gage-height record? discharge computed on basis of weather records and records for station 

on San Juan River at Fagosa Springs.

b Stage-discharge relation affected by ice.
194 SAN JUAN RIVER BASIN

Animas River at Howardsville, Colo.

Location.- Water-stage recorder, lat. 37°50', long. 107°36', In sec. 12, T. 41 N., R. 7 

W., 0.4 mile southwest of Hovrardsville and half a mile downstream from Cunningham 

Creek. Datum 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 September 1941.

Extremes.- Maximum discharge during year, 1,080 second-feet June 22 (gage height, 3.53 

feet), from rating curve extended above 800 second-feet; minimum dally, 11 second-feet 

Feb. 27, 28.

1936-41: Maximum discharge, 1,700 second-feet June 21, 1938 (gage height, 4.50 

feet), from rating curve extended above 800 second-feet; minimum not determined, 

occurred during period of no record.

Greatest flood known occurred Oct. 5,. 1911.

Remarks.- Records good except those for periods of Ice effect, which are fair. No 

diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

IS

16 

17 

18 

19 

20

81 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

92 

89 

S3 

75 

94

94 

86 

83 

80 

74

68 

64 

60 

59 

57

54

51 

47 

44 

43

42 

40 

40 

39 

37

39 

33 

32 

40 

36 

32

Nov.

29 

31 

31 

29 

26

28 

28 

29 

29 

26

24 

24 

«23 

25 

27

27 

27 

27 

26 

25

25 

25 

25

24 

21

19 

18 

23 

23 

23

Dec.

23 

21 

19 

IS 

19

20 

20 

20 

20 

20

20 

18 

17 

16 

15

16 

17 

17 

17 

17

IB 

18 

17 

17 

18

17 

16 

17 

17 

17 

17

Jan.

16 

IS

14 

14 

14

15 

IS 

15 

16 

16

16 

15 

15 

*15 

14

14 

15 

16 

15

14

14 

14- 

14 

14 

14

14 

14 

15 

16 

16 

15

Feb.

IS 

15 

15 

15

14

14 

15 

14 

14 

14

14 

14 

14 

14 

14

14 

*14 

14 

14 

14

14 

13 

13 

14 

14

12 

11 

11

Month

Oct 

N<M

Dec

C

Jar 

Pel 

Mar 

Apr 

Maj 

Jut 

JtJ 

Au. 

Sei

1

11. ............................. ....

ater year 1940-4,

Mar.

13 

IS 

13 

12

14

14 

IS 

13 

13 

14

15 

16 

16 

16 

16

16 

*16 

15 

14

14

14 

14 

IS 

14 

IB

18

18 

17 

17 

18 

IS

Apr.

19 

IS 

18 

18 

19

18 

18 

20 

22 

22

21 

20 

20 

20 

20

SO 

20 

20 

20 

22

19 

IB 

19 

20 

22

24 

27 

32 

39 

56

Secondfoot-days

1,807 

767 

559

31,013

456 

387 

465 

671 

10,200 

15,788 

14,361 

4,015 

3,353

52,829

Hay

65 

65 

75

88 

S8

114 

153 

244 

305 

385

450 

590 

596 

554 

470

435 

518 

548 

445 

325

305 

264 

264 

325 

405

475 

410 

345 

300 

288 

292

H&xlinuiD

94 

31 

23

584

16 

15 

18 

56 

596 

848 

650 

202 

236

84S

June

350 

445 

490 

470 

490

460 

445 

355 

284 

236

206 

196 

244 

305 

360

440 

542

704 

758 

794

818 

S48 

842 

650 

680

72S 

728 

668 

636 

632

July

650 

620 

626 

608 

584

530 

530 

530 

542 

500

564 

584 

506 

465 

450

435 

445 

460 

470 

455

415 

410 

415 

410 

380

340 

370 

315 

272 

240 

220

Minimun

32 

18 

15

12

14 

11 

12 

18 

65 

196 

820 

70 

47

11

Aug.

202 

188 

177 

172 

163

158 

161 

163 

161 

161

148 

148 

136 

134 

151

163 

148 

132 

181 

112

112 

107 

98 

88 

83

80 

75 

72 

74 

77 

70

Mean

58.3 

25.6 

18.0

84.7

14.7 

13.8 

15.0 

22.4 

329 

526 

463 

130 

112

146

Sept.

67 

63 

62 

53 

56

53 

52 

,57 

53 

50

48 

47 

77

93 

94

88 

84

144 

169 

177

166 

236 

232 

199 

180

166 

156 

144 

148 

139

Run-off In 

acre-feet

3,580 

1,580 

1,110

61,520

904 

768 

922 

1,330 

20,230 

31,320 

88,480 

7,960 

6,650

104,800

* Winter discharge measurement made on this day.

Hote.- Stage-discharge relation affected by Ice Nov. 12 to Jan. 10, Jan. 14-88, Feb. 1-3, 5, 6, 8, 

9, 12, 14, 17, 22, 23, Feb. 26 to Kar. 2, Bar. 4, 7-10, 12.
SAN JUAN RIVER BASIN 195

Anlmas 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 

octooer 1933 to September 1941 in reports of U. S. Geological Survey. June 1895 to 

December 1905 and December 1910 to September 1941 in reports of State engineer.

Average discharge.- 40 years (1895-1900, 1901-5, 1910-41), 910 second-feet.

Extremes.- Maximum discharge during year, 10,500 second-feet May 14 (gage height, 7.40 

reetj; minimum daily, 110 second-feet Jan. 4.

1895-1900, 1901-5, 1910-41: Maximum discharge, 25,000 second-feet Oct. 5, 1911 

(gage height, 11 feet, corrected), 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 dally, 50 second-feet Dec. 22, 1917.

Remarks.- Records excellent except those for Oct. 1 to Mar. 31, which are fair. Diversions above station for irrigation. Natural regulation by many lakes and artificial 

regulation for power.

Discharge, In second-feet, water Tear October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

SO 

31

Cot.

9S6 

S30 

728 

638

676

1,200 

876 

743 

663 

625

571 

521 

482

452 

442

427 

407 

383

364 

355

346 

S41 

341 

337 

328

319 

360 

337

337 

324 

319

HOT.

307 

290 

286 

290 

286

2S2 

274 

274 

270 

278

270 

254 

246 

231 

250

266 

274 

286 

307 

290

262 

262 

266 

254 

255

235 

239 

227 

235 

235

Dec.

222

214 

21S 

218 

21S

225 

214 

204 

204 

214

228 

228 

222 

197 

142

119 

180 

204 

194 

158

151 

164 

161 

187 

174

142 

151 

1S7 

1S7 

190 

197

Jan.

187 

164 

125 

110 

145

135 

180 

174 

174 

171

177 

204 

200 

211 

204

194 

174 

1S7 

194 

1S7

197 

197 

184 

184 

204

184 

174 

187 

218 

225 

218

Feb.

211 

184 

177 

171 

164

161 

211 

236 

228 

. 214

236 

232 

228 

225 

332

246 

253 

260 

268 

268

276 

280 

268 

268 

284

276 

276 

272

Month

Oct

Hoi 

Dec

C

Jar 

Pel 

Mai

Api 

Maj 

Jut 

Ju3 

Auj 

Set

1

alendar year 1940. .....................

later year 1940-'

liar.

280 

296 

296 

272 

272

264 

256 

250 

250 

242

346 

250 

256 

278 

276

276 

264 

288 

320 

358

372 

367

380 

395 

378

367

358 

367 

390 

390 

425

Apr.

540 

552 

51S 

475 

485

480 

445 

455 

507 

612

630 

576 

540 

502 

4S5

480 

475 

475 

445 

430

445 

4S5 

480 

480 

529

636 

80O 

1,010 

1,080 

1,280

Secondfoot-daya

16,060 

7,961 

5,914

191,954

5,669 

6,605 

9,667 

17,332 

135,310 

140,470 

82,380 

24,802 

26,264

473,434

May

1,540 

1,660 

1,760 

2,210 

2,240

2,570 

3,010 

3,340 

3,930 

5,010

5,780 

6,590 

3,610 

9,500 

7,290

7/090 

5,340 

6,590 

6,320 

4,130

3,060 

2,880 

2.91C 

3,54C 

4,29C

4,480 

4,920 

4,290 

3,500 

3,330 

3,100

Maximum

1,200 

307 

22S

2,350

225 

284 

425 

1,280 

9,500 

7,410 

3,980 

1,150 

3,150

9,500

June

3,250 

3,520 

3,980 

3,940 

4,170

4,070 

4,250 

4,440 

4,000 

3,230

2,850 

2,680 

2,720 

3,040 

3,320

3,640 

4,350 

5,370 

6,480 

6,700

6,750 

6,390 

7,180 

7,410 

6,220

6,300

5,770 

5,400 

4,500 

4,050

July

3,980 

3,660 

3,790 

3,790 

3,660

3,350 

3, SCO 

3,260 

3,230 

3,200

3,480 

3,170 

3,130 

2,790 

2,550

2,460 

2,520 

2,410 

2,310 

2,220

2,200 

2,090 

2,100 

2,030 

2,000

1,730 

1,820 

1,SOO 

1,510 

1,330 

1,210

Minimum

319 

227 

119

119

110 

161 

242 

430 

1,540 

2,680 

1,210 

427 

360

110

Aug.

1,150 

1,090 

1,040 

959 

968

959 

914 

950 

1,040 

1,060

959 

914 

823 

736 

878

1,060 

1,070 

905 

816 

736

682 

650 

594 

554 

521

494 

472 

457 

447 

427 

427

Mean

518 

265 

191

524

183 

236 

312

578 

4,365 

4,682 

2,657 

800 

875

1,311

Sept.

442 

442 

432 

412 

398

378 

369 

360 

373 

369

369 

364

388 

757 

714

676 

613 

750 

1,480 

1,160

1,050 

1,720 

3,150 

1,900 

1,630

1,290 

1,100 

968 

1,070 

1,240

Run- off In 

acre-feet

31,350 

15,790 

11.73O

380,700

11,240 

13,100 

19,170 

34,380 

268,400 

273,600 

163,400 

49,190 

52,090

948,900
196 SAN JUAN RIVER BASIN

Animas River near Cedar Hill, N. Mex.

Location.- Water-stage recorder, lat. 37°02'15", long. 107°52'25", In sec. 7, T. 32 N., 

 RTTTW., 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 village of Cedar Hill.

Records available.- November 1933 to September 1941.

Extremes.- Maximum discharge during year, 11,900 second-feet May 14 (gage height, 9.50 

reetj; minimum daily, 190 second-feet (estimated) Jan. 4.

1933-41: Maximum discharge and gage height, those of May 14, 1941; minimum daily 

discharge, 90 second-feet (estimated) Jan. 21, 1935. 

Greatest flood known occurred Oct. 5 or 6, 1911.

Remarks.- Records good except those for periods of Ice effect, which are fair, 

sions above station for irrigation.

DiverDischarge, in second-feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

1,260

1,120

940

S02

S02

1,800

1,310

1,020

877

794

714

646

605

560

540

518

500

483

459

435

415

404

404

394

390

376

412

404

387

376

376

Nov.

356

342

339

339

339

*324

324

318

312

318

315

294

b280

*b260

b290

b290

306

312

356

366

330

321

»321

315

294

294

297

291

291

294

Dec.

2S5

279

276

276

276

273

279

276

270

273

3O6

*306

297

b270

248

230

b230

b280

b290

*b270

b260

b270

b2SO

306

300

248

252

*b270

288

2S5

287

Jan.

288

b260

b250

b!90

b200

*b260

b2SO

b260

b260

b260

b260

291

*294

291

276

b260

b260

b210

b230

b250

*b270

b260

b270

b270

273

b250

b250

*b260

297

315

291

Feb.

279

261

*25S

b250

b240

b240

273

285

273

261

*267

300

300

297

309

336

336

373

431

423

518

475

500

495

491

451

390

3S7

.

-

Month

October. ...................................

November

December. ..................................

Calendar year 1940 ......................

January. ...................................

February ...................................

Maroh. .....................................

April. ...................................

Mav way. .......................................

June ......................................

July. ......................................

August .................................. .

September ..................................

Water year 1940-41 ......................

Mar.

415

615

491

451

495

463

431

398

408

370

352

380

419

455

720

725

680

664

721

714

742

778

S18

886

682

600

600

640

682

714

786

Apr.

1,170

1,020

904

850

877

850

794

S34

960

1,170

1,190

1,130

1,050

913

S95

see

850

S18

694

652

770

1,270

970

877

1,000

2,000

2,080

2,290

2,810

2,290

~

Secondfoot-days

20,523

9,428

8,546

226,028

3,136

9,699

18, 295

34,264

176,260

172,520

103,790

29,306

34, 404

625,171

May

2,660

3,370

3,010

6,190

4,040

4,140

4,740

5,160

5,790

6,670

7,110

8,030

9,680

10,400

8,720

7,340

7,110

7,570

7,570

5,530

4,240

3,840

3,340

4,440

5,370

5,370

5,790

5,370

4,540

4,440

4,140

Maximum

1,800

366

306

3,480

315

518

886

2,290

10,400

8,720

5,090

1,320

4,600

10,400

June

4,240

4,440

4,340

4,950

5,160

5,060

5,370

5,580

5,160

4,440

3,750

3,460

3,460

3,840

4,240

4,640

5,370

6,230

7,570

3,030

8,030

8,030

8,260

8,720

7,570

7,570

6,890

6,670

5,790

5,160

~

Minimum

376

260

23&

125

190

240

352

652

2,660

3,460

1,320

538

425

190

July

5,060

4,740

4,350

4,980

5,090

4,920

5,010

5,020

4,910

4,600

4,800

4,130

3,980

3,330

2,910

2,640

2,320

2,730

2,550

2,350

2,550

2,300

2,300

2,300

2,300

1,930

1,860

2,070

1,680.

1,460

1,320

Aug.

1,270

1,230

1,150

1,080

1,030

1,080

1,000

1,080

1,190

1,190

1,150

1,110

1,000

940

1,000

1,230

1,320

1,190

1,040

940

850

795

715

665

613

595

575

555

538

555

Mean

662

314

276

618

262

346

590

1,142

5,636

5,751

3,348

945

1,147

1,713

575

Sept.

555

555

533

520

502

470

455

440

455

440

425

425

513

767

880

768

768

768

1,360

1,740

1,460

2,440

4,600

2,550

1,930

1,620

1,410

1,270

1,660

1,620

~

Run-off In 

acre-feet

40,710

18,700

16,950

448,300

16, 140

19,240

36,290

67,960

349,600

342,200

205,900

58, 130

68,240

1,240,000

Peak dlaeharge.- May 14 (10 a.m.) 11,900 sec. -ft. j Aug. 

(3 a.m.) 5,440 see. -ft.

* Winter discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

9 (5 p.m.! 3,480 see. -ft.; Sept. 23
SAN JUAN RIVER BASIN 197

Animas River at Farmington, N. Max.

Location.- Water-stage recorder, lat. 36°43'20", long. 108°12'00", in SE-J sec. 16, T. 29

 N., R. 13 W., at bridge on State Highway 17, 0.6 mile southeast of Farmington and 1.1 

miles upstream from mouth. Prior to May 12, water-stage recorder 35 feet downstream, 

same datum.

Drainage area.- 1,360 square miles.

Records available.- June 1904 to October 1905 (published as Animas River near Farmington),

 September ISlii to December 1914 and October 1930 to September 1941 in reports of

Geological Survey. June 1904 to October 1905 (published as Animas River near Farmington) 

and September 1912 to December 1931 in reports of State engineer.

Extremes.- Maximum discharge.during year, 12,800 second-feet May 14 (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, 165 second-feet Sept. 8, 10.

1930-41: Maximum discharge and gage height, those of May 14, 1941; minimum daily 

discharge, 8.5 second-feet Aug. 18, 1940.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good for October to April; others fair, 

irrlgat1on.

Diversions above station for

Discharge, In second-feet, water year October 1940 to September 1941

Pay

1 

2 

3 

4 

B

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

1,330 

1,130 

1,030 

882 

SOS

1,380 

1,390 

1,100 

962 

S68

308 

717 

656 

592 

562

528 

500 

473 

440 

420

390 

372 

354 

341 

323

320 

350 

386 

350 

345 

337

Nov.

332 

316 

307 

299 

299

307 

295 

287 

284 

291

291 

237 

287 

280 

276

2S4 

303 

3,20 

358 

400

V76

350 

345 

345 

323

316 

307 

307 

307 

311

Dec.

311 

307 

303 

299 

299

303 

299 

237 

234 

287

341 

345 

337 

311 

284

b250 

b280 

323 

350 

32S

899 

876 

284 

303 

368

311 

264 

264 

303 

337 

3S1

Jan.

345 

303 

276 

246 

242

284 

' 272 

276 

26S 

276

287 

324 

345 

324 

311

291 

264 

246 

257 

268

291 

291 

303 

276 

295

2SO 

272 

276 

320 

390 

363

Feb.

328 

307 

230 

272 

276

2SO 

307 

328 

328 

316

316 

345 

353

' 345 

350

358 

372 

376 

435 

47S

522 

59S 

539 

59S 

562

544 

468 

425

Month

Od 

Not 

De<

(

Jai 

Fel 

Hai 

Ap 

Maj 

Jui 

JuJ tot Se 

1

Calendar year 194 0... ...................

c*ll

Ly..... .................................

later year 1941

Mar.

446 

568 

623 

495 

490

512 

495 

446 

435 

425

381 

381 

420 

456 

616

354 

S22 

752 

745 

794

773 

S60 

882 

936 

S75

675 

662 

703 

733 

759 

322

Apr.

1,080 

1,190 

1,020 

382 

906

S68 

330 

801 

S52 

994

1,120 

1,070 

1,040 

954 

SS2

S68 

838 

330 

730 

710

703 

1,100 

1,210 

1,020 

994

1,740 

1,790 

2,030 

1,930 

2,000

Secondfoot-days

20,499 

9,395 

9,523

197,533.5

9,068 

11,011 

19,891 

33.088 

177,350 

174,180 

99,430 

24,351 

31,663

619,937

May

2,230 

3,360 

3,000 

6,030 

4,990

4,560 

4,880 

5,220 

5,550 

6,280

a7,000 

3,050 

9,460 

10,300 

9,460

7,750 

7,150 

7,750 

7,750 

6,020

4,270 

3,620 

3,330 

4,160 

5,100

5,360 

5,620 

5,330 

4,620 

4,270 

3,330

Maximum

1,390 

400 

381

3,130

390 

59S 

936 

2,030 

10,300 

9,140 

5,100 

1,330 

4,930

10,300

June

4,050 

4,270 

4,500 

4,500 

4,860

5,100 

4,360 

5,620 

5,620 

4,860

3,940 

3,520 

3,320 

3,520 

4,160

4,380 

5,100 

6,160 

7,900 

3,500

3,500 

3,200 

3,500 

9,140 

S,200

7,900 

7,30O 

6,720 

5,SSO 

5,100

July

5,100 

4,860 

4,620 

4,740 

4,360

4,740 

4,500 

4,270 

4,270 

4,050

4,870 

4,050 

3,830 

3,420 

3,040

2,700 

2,530 

2,610 

2,610 

2,610

2,610 

2,300 

2,300 

2,300 

2,150

2,010 

1,S20 

2,030 

1,700 

1,270 

1,260

Minimum

320 

276 

250

S.5

242 

272 

331 

703 

2,230 

3,320 

1,260 

230 

165

165

Aug.

1,080 

1,070 

822 

S94

S14

S14 

S06 

SS8 

1,140 

1,330

1,130 

1,040 

958 

790 

870

1,030 

1,120 

1,120 

670 

S70

650 

650 

590 

530 

475

420 

370 

385 

2SO 

280 

325

Mean

661 

313 

307

540

292 

393 

642 

1,103 

5,737 

5,S06 

3,209 

736 

1,055

1,699

Sept.

2SO 

280 

240 

200 

200

200 

200 

165 

200 

165

200 

200 

370 

699 

958

769 

720 

727 

1,440 

1,S20

1,500 

1,710 

4,9SO 

2,950 

2,150

1,750 

1,540 

1,430 

1,820 

1,750

Run-off In 

acre-feet

40,660 

13,630 

13,890

391,800

17,970 

21,340 

39,450 

65,620 

352,300 

345,500 

197,300 

43,300 

62,300

1,230,000

Hote.- Recorder station destroyed by flood May 11} records May 12 to Sept. 13 computed on basis 

f gage readings obtained twice dally. 

* 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.
198 SAN JUAN RIVER BASIN 

Mineral Creek near Sllverton, Colo.

Location.- Water-stage recorder, lat. 37°48'50", long. 107°41'45", in sec. 13, T. 41 N.,

 R. 8 W., 300 feet upstream from Bear Creek and 2 miles west of Silverton.

Drainage area.- 43.9 square miles.

Records available.- May 1936 to September 1941.

Extremes.- Maximum discharge during year, 1,060 second-feet June S3 (gage height, 3.83

 feet), from rating curve extended above 550 second-feet; minimum daily, 12 secondfeet Feb. 27.

1936-41: Maximum discharge, 1,700 second-feet June 29, 1938 (gage height, 4.69 

feet), from rating curve extended above 550 second-feet; minimum not determined, 

occurred during period of no record.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good. No diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

5

6

7

e

9 

10

11

12 

13 

14 

15

16 

17 

16 

19 

20

81 

82 

23 

24 

25

26 

87 

28 

29 

30 

31

Oct.

145 

127 

109 

95 

146

156 

US 

104 

96 

35

76 

70 

68 

65 

61

58

56 

51 

50 

48

45 

44 

42 

41 

39

42 

39 

41 

57 

38 

34

Nov.

31 

32 

38 

38 

30

31 

32 

32 

35 

52

51 

29 

29 

50 

51

50 

30 

30 

SO 

28

28 

27 

27 

26 

86

21 

20 

26 

85 

25

Dec.

25 

24 

82 

21 

21

22 

22 

22 

22 

25

24 

21 

19 

18 

17

19 

20 

21 

21 

21

22 

21 

20 

21 

22

20 

19 

20 

21 

21 

21

Jan.

20 

17 

16 

16 

17

IS 

16 

16 

18 

18

19 

20 

19 

19 

16

17 

IS 

IS 

IS 

17

17 

17 

17 

17 

17

17 

18 

18 

20 

20 

19

Feb.

IS 

IS 

IS 

19 

16

16 

17 

16 

16 

16

16 

16 

16 

16 

16

16 

16 

16 

16 

16

16 

15 

15 

16 

16

16 

12 

14

Month

Oct 

HOD 

Dec

C

Jar 

Fet 

Max 

Apr 

Maj 

Jun 

Jul 

Aug 

Sep

K ater year 1940-4

Mar.

17 

16 

16 

14 

18

16 

16 

14 

14 

15

18 

16 

18 

18 

17

16 

16 

18 

19 

21

20 

21 

21 

14 

19

20 

22 

25 

23 

23 

25

Apr.

28 

26 

25 

25 

26

25 

25 

23 

26 

29

28 

26 

88 

26 

27

27 

. 26 

24 

22 

21

22 

25 

24 

25 

26

27 

51 

34 

47 

61

Secondfoot-days

2,200 

866 

653

28,902.2

556 

450

564 

851 

9,090 

14,719 

14,747 

5,415 

5,772

53,863

Bay

61 

56 

70 

79 

83

118 

153 

211 

278 

335

380 

465 

600 

545 

432

410 

460 

490 

387 

279

258 

250 

238 

238

324

596 

578 

502 

274 

270 

27O

Maximum

146 

33 

85

500

20 

19 

25 

61 

600 

870 

612 

262 

315

870

June

297 

556 

569 

556 

387

387 

382 

310 

262 

234

222 

226 

246 

274 

306

574 

450 

575 

654 

738

738 

780 

670 

846 

804

726 

672 

672 

606 

600

July

612 

600 

606

ess

530

515 

540 

575 

575 

675

565 

540 

525 

475 

446

470 

505 

465 

450 

446

432 

450 

455 

428 

400

369 

418 

351 

306 

288 

270

HlnlnuB

34

20 

17

9.2

16 

12 

14 

21 

56 

222 

270 

72 

38

12

Aug.

258 

246 

230 

230 

254

246 

242 

250 

262 

238

215 

196 

178 

178 

215

242 

246 

185 

163 

146

130 

115 

104 

94 

86

84 

79 

72 

77 

84 

72

Mean

71.0 

28.9 

21.1

- 79.0

17.9 

16.1 

18.2 

27.7 

293 

491 

476 

175 

126

148

Sept.

68 

63 

59 

54 

SO

46 

46 

48 

44 

39

38

39 

116 

118 

99

84 

82 

279 

258 

234

181 

SIS 

274 

219 

185

167 

ISO 

137 

160 

130

Run-off In 

acre-feet

4,360 

1,780 

1,300

57,350

1,100 

893 

1,120 

1,650 

18,030 

29,190 

£9,250 

10,740 

7,480

106,800

Mote..- Ko gage-height record MOT. 5-12, 14-16, Dec. 14 to Jan. 13, Jan. 23 to Feb. 3; discharge 

omputed on basis of three discharge measurements, recorded range In stage, and weather records.
SAN JUAN RIVER BASIN 199

Hermosa Creek near Hermosa, Col'o.

Location.- Water-stage recorder, lat. 37°25'30", long. 107°50'15", in NWi sec. 3, T. 

36 N., R. 9 W., 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. April 1920 to September 1928 water-stage recorder, and prior to September 1914 a staff gage, both at site 

half a mile upstream at different datum.

Drainage area.~ 172 square miles.

Records available.- November 1911 to June 1912, April 1913 to September 1914 (fragmentary) 

ana October 1940 to September 1941 In reports of Geological Survey. April 1913 to 

September 1914, April 1920 to September 1928 and October 1940 to September 1941 In 

reports of State engineer. The figures for the flood of May and June 1920 as 

published In reports of the state engineer are considered to be too high according 

to Information furnished by that organization.

Extremes.- Maximum discharge during year, 2,980 second-feet May 12 (gage height, 6.02 

feet), from rating curve extended above 1,800 second-feet; minimum dally, 12 secondfeet Jan. 4.

1920-28, 1940-41: Maximum discharge, 3,040 second-feet Sept. 12, 1927 (gage 

height, 8.50 feet, site and datum then In use, from floodmarks), by slope-area method;

. minimum not determined, occurred during period of Ice effect.

Remarks.- Records good except those for periods of Ice effect, which are fair. Diversions 

above station for Irrigation.

Cooperation.- Gage-height records and discharge measuremente prior to June 30 furnished 

by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

86 

27 

28 

29 

SO 

SI

Oct.

75 

58 

50 

44 

82

109 

73 

61 

56 

53

' 48 

44 

41 

38 

36

34 

33 

32 

30 

29

28 

28 

28 

2S 

27

29 

44 

35 

29 

32 

27

Nov.

25 

27 

28 

28 

21

27 

24 

26 

25 

26

2S 

22 

IS 

19 

29

32 

«32 

31 

31 

26

24 

25 

24 

23 

21

20 

19 

19 

22 

23

Dec.

25 

25 

24 

23 

20

»19 

»19 

19 

20 

20

20 

19 

18 

17 

16

16 

18 

19 

18 

19

IS 

IS 

18 

19 

18

17 

19 

22 

23 

24 

25

Jan.

22 

20 

13 

12 

13

13 

13 

14 

»14 

17

20 

22 

24 

22 

21

19 

17 

16 

18 

18

19 

20 

17 

18 

18

17 

»17 

20 

22 

20 

19

Feb.

17 

18 

19 

20 

22

25 

28 

27 

25 

»27

25 

26 

25 

26 

30

29 

28 

29 

30 

27

29 

27 

28 

29 

30

26 

26 

31

Month ,

001 

Not 

He

(

Jai 

Pel 

Mai

Ap 

Ma3

Jui 

Ju] 

Au( 

Se

1

Calendar year

rch ...... .. .

Ly..... .................................

Tater year 1940-4

liar.

32 

56 

55 

50 

56

31 

31 

33 

40 

39

44 

41 

46 

46 

44

40 

48 

60 

80 

103

94 

SS 

S4 

82 

74

70 

74 

84 

88 

94 

138

Apr.

251 

186 

162 

150 

170

154 

138 

162 

237 

321

261 

208 

166 

146 

138

146 

138 

127 

115 

100

112 

106 

S9 

106 

130

198 

333 

416 

442 

514

Secondfoot-days

1,359 

740 

615

-

555 

729 

1,863 

5,911 

44,267 

31,584 

8,765 

2,181 

4,255

102,804

May

534 

592 

624 

945 

950

1,290 

1,370 

1,600 

1,310 

1,810

2,060 

2,330 

2,460 

2,400 

2,080

1,680 

1,830 

1,860 

1,560 

1,050

852 

S39 

943 

1,290 

1,420

1,410 

1,530 

1,370 

1,260 

1,220 

1,100

Maximum

109 

32 

25

-

24 

31 

138 

514 

2,460 

1,390 

586 

88 

898

2,460

June

1,110 

1,160 

1,150 

1,140 

1,240

1,200 

1,550 

1,590 

1,290 

1,090

1,050 

995 

982 

1,030 

1,050

1,070 

1,130 

1,200 

1,220 

1,130

1,050 

1,000 

995 

995 

924

839 

794 

754 

664 

612

July

586 

579 

553 

520 

508

456 

442 

449 

416 

37S

371 

345 

309 

291 

249

231 

202 

189 

171 

162

146 

135 

128 

146 

137

US 

143 

116 

103 

95 

91

Minimum

27 

IS 

16

-

12 

17 

30 

98 

534 

612 

91 

54 

44

12

Aug.

85 

81 

78 

76 

81

8S 

85 

81 

35 

84

79 

74 

69 

66 

78

77 

86 

73 

65 

62

61 

60 

57 

57 

56

55 

54 

54 

55 

61 

56

Mean

43.8 

24.7 

19.8

-

17.9 

26.0 

60.1 

197 

1,42S 

1,053 

283 

70.4 

141

282

Sept.

54

52 

50 

49 

48

47 

47 

47 

47 

46

44 

44 

62 

95 

74

63

57 

124 

108 

86

7S 

898 

683 

352 

220

165 

137 

122 

165 

171

Run-off In 

acre-feet

2,700 

1,470 

1,220

-

1,100 

1,450 

5,700 

11,720 

67,800 

62,650 

17,590 

4,530 

8,400

203,900

* Winter discharge measurement made on this day.

, SSSSi" Stage-discharge relation affected by ice Hov. 12, 13, Nov. 25 to Dec. 9, Dec. 12-50, Jan. j.*"12 f ±4t r lo«"28, Feb 1«*6 
200 SAN JUAN RIVER BASIN

Llghtner Creek near Durango, Colo.

Location.- Water-stage recorder, lat. 37°16 f , long. 107°53', In sec. 30, T. 35 N., R. 9 

W., half a mile above mouth and half a mile west of Durango. Prior to June 18, 1941, 

water-stage recorder 50 feet upstream at different datum.

Drainage area.- 66 square miles.

Records available.- October 1939 to September 1941. October 1933 to September 1939 at 

site 2 miles upstream In reports of Geological Survey June 1927 to September 1939 

at site 2 miles upstream In reports of State engineer. All rec'ords equivalent.

Average discharge.- 14 years, 22.1 second-feet.

Extremes.- Maximum discharge during year, 1,780 second-feet May 4 (gage height, 5.20 

feet, present site and datum, from floodmarks), by slope-area method; minimum, 2.2 

second-feet Dec. 9, 12, probably less during period of Ice effect, Dec. 13 to Feb. 16.

1927-41: Maximum discharge, 1,830 second-feet June 26, 1937 (gage height, 5.00 

feet, from floodmarks),site and datum then In use, by slope-area method; minimum dally, 

1 second-foot or less at times during periods 1930-31, 1933-35, 1938-40.

Remarks,- Records good except those for period of Ice effect or no gage-height record, 

whicn are poor. No diversions above station. .

Discharge, in second-f e.et , water year Ootober 1940 to September 1941

Day

2

4

5

6

7

8

9

10

12

15

1 A

19

20

21

rt^

24

25

oc

Oft

31

Oct.

4.3

3.5

IS

26

14

11

9.1

T..2

6.1

5.1

4.5

4.3

4.0

3.8

3.3

Nov.

4.0

3.2

3.5

3.2

3.0

3.2

3.2

3.0

4.0

3.3

2.9

2.7

3 2

Dec.

2.4

2.4

3.0

2.5

2.5

2.2

> 2.4

Jan.

3

Feb.

> 4.0

|...

«6.1

6.9

9.1

8.S

9.5 

12

12

14

14

13

12

12

_

-

Month

November . ................................ .

December. ..................................

Calendar year 1940 ......................

Janu 

Febr 

Hare

April ......................................

May. .......................................

July ..................................... .

Augu 

Sept

St..... .............................. . ember . .................................

Water year 1940-41 ......................

Mar.

15

18

14

16

17

14

14

14

15

14

14

16

17

17

20

26

40

56

71

66

64 

32

37

81

71

55

69

S5

90

106

130

Apr.

175

123

127

120

123

107

107

131

164

181

143

13S

140

135

143

142

122

106

99

85

125 

164

183

179

225

523

374

267

234

190

"

Seoondfoot-days

199.6

93.3

75.2

3,414

93 

197.0 

1,414

5,080

9,437

3,619

734.9

159.9 

763.2

21,871.1

May

190

335

296

764

459

414

411

431

448

431

411

473

518

424

322

265

2S1

303

255

167

125 

127

155

193

247

205

203

167

140

140

127

Maximum

26

5.1

3.0

163

14 

130

523

764

175

48

7.3 

295

764

June

127

132

132

127

130

119

147

174

162

142

136

121

h!50

h!75

h!60

h!45

h!20

124

122

117

108 

10S

106

106

37

32

78

74

60

43

~

Minimum

3.5

2.5

-

-

14

85

125

48

8.0

3.3

4.5

-

July

43

45

42

42

45

40

33

34

31

23

30

27

23

20

20

18

20

18

16

15

14 

14

14

13

14

13

15

13

12

9.9

3.0

Aug.

7.0

7.3

6.2

5.9

5.9

5.6

5.6

5.9

5.6

5.1

5.3

5.6

4.S

4.5

4.8

4.3

5.1

5.3

5.3

5.1

5.9 

6.2

5.1

4.1

3.3

3.7

3.7

4.1

4.8

4.3

Mean

6.44

3.2S

2.43

9.33

3

7.04 

45.6

169

304

121

23.7

5.16 

25.4

59.9

Sept.

4.5

4.S

5.1

5.1

5.1

5.1

4.8

4.8

4.8

5.1

5.1

5.1

9.2

9.2

S.8

9.2

9.2

9.2

11

12 

295

97

45

22

19

47

45

"

Run-off In 

acre-feet

396

195

6,730

134 

391 

2,800

13,720

1,510

43,330

* Winter discharge measurement made on this day.

h Computed from staff-gage readings.

Note.- Stage-discharge relation affected by ice Dec. 13 to Feb. 16.
SAN JUAN RIVER BASIN 

Florida River near Durango, Colo.

201

Location.- Water-stage recorder, lat. 37°20', long. 107°45', in sec. 4, T. 35 N., R. S

w., just downstream from Red Creek and log miles northeast of Durango. Datum of gage

is 7,301.88 feet (revised) 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 1912 and October 1933 to September 1941 in reports of Geological Survey. 

May to July 1899, April 1901 to October 1903, September 1910 to September 1924 and 

April 1927 to September 1941 in reports of State engineer. Station has been located 

at several different sites in this vicinity; all records equivalent.

Average discharge.- 23 years (1910-12, 1917-24, 1927-41), 125 second-feet.

Extremes.- Maximum discharge during year, 1,530 second-feet June 24 (gage height, 4.42 

reet), from rating curve extended above 950 second-feet; minimum daily, 8.5 secondfeet (discharge measurement.) Jan. 3, probably less during period of ice effect.

1899, 1901-3, 1910-24, 1927-41: Maximum discharge observed, 4.640 second-feet 

June E8, 1927 (gage height, 4.50 feet, site and datum then in use); minimum daily, 

0.4 second-foot Feb. 15, 191S.

Greatest flood known occurred Oct. 5, 1911.

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

which a"re fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Da;

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

18

17

18

19

20

21

22

23

24

25

28

27

28

29

30

31

Oct.

189

161

135

115

1S9

247

186

161

142

117

104

94

S2

73

70

65

59

53

52

46

45

42

40

39

37

37

42

39

35

3S

29

Nov.

29

32

31

29

23

2S

25

25

25

26

22

26

25

*29

34

34

25

21

27

26

22

24

24

22

25

25

24

26

29

29

"

Dec.

25

27

26

25

23

23

25

25

25

22

22

21

> IS

 10

Jan.

(*)

9

(*)

Feb.

> 16

-

-

-

Month

October ....................................

November ...................................

December. ..................................

Calendar year 1940 ......................

January. ..............................."....

February. ..................................

March.................. . ...................

April. .....................................

Ifal7 ay. .......................................

June .......................................

July. ......................................

August .....................................

September . .................................

Water year 1940-41 ......................

Mar.

19

21

*19

21

21

16

16

20

22

20

19

21

23

24

25

23

26

31

40

46

47

53

59

59

47

45

46

52

59

59

75

Apr.

100

S6

77

77

32

79

73

82

96

113

104

100

92

66

S3

90

8S

S2

79

73

79

82

82

92

117

151

217

244

229

232

-

Secondfoot-daya

2,765

792

527

32,633.7

279

448

1,078

3,272

20,090

22,377

12,937

2,744

3,967

71,826

May

262

347

335

525

446

490

530

572

643

744

834

942

1,140

1,160

1,000

S76

930

1,000

SS8

605

471

436

424

514

594

594

648

561

525

546

504

Maximum

247

34

27

416

_

_

75

244

1,160

1,210

774

166

572

1,210

June

530

525

551

561

594

594

665

605

490

424

374

370

415

525

638

732

894

1,040

1,130

1,050

1,030

1,130

1,150

1,210

1,070

1,050

942

SSS

340

810

-

Minimum

29

21

-

_

_

_

16

73

262

370

120

37

24

-

July

76S

750

73S

662

774

654

583

583

540

520

520

561

495

419

365

352

356

B340

a3 20

a300

264

246

265

255

262

213

227

194

163

136

120

Aug.

104

96

67

79

85

96

92

83

124

161

'131

102

81

61

122

163

166

127

104

90

79

71

63

57

52

45

44

36

37

45

39

Mean

39.2

26.4

17.0

62.0

9

16

34.6

109

648

763

419

S3. 5

132

197

Sept.

35

34

32

23

26

2S

26

24

25

25

25

27

37

87

69

68

60

163

202

200

153

525

572

307

23S

205

176

155

205

205

-

Run-off in 

acre-feet

5,460

1,570

1,050

44,960

553

8S9

2,140

6,490

39,850

45, 3SO

25,760

5,440

7,370

142, 500

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of record for Anlmas River at Durango.

Note.- Stage-discharge relation affected by loe Dec. 13 to Mar. 2.
202 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 K., R. 

11 W., 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 

ana October 1933 to September 1941 In reports of Geological Survey. June to August 

1904, April to August 1906, August to December 1910 and May 1917 to September 1941 In 

reports to State engineer.

Average discharge.- 24 years (1917-41), 48.3 second-feet.

Extremes.- Maximum discharge during year, 1,8SO second-feet Sept. 22 (gage height, 3.30 

feet}, by slope-area method; minimum dally, 4.2 second-feet Feb. 4, 5.

1904, 1906, 1910, 1917-41: Maximum discharge, that of Sept. 22, 1941; no flow 

Apr. 4, 1906.

Greatest flood known occurred Oct. 5, 1911.

Remarks.- Records good except those for period of Ice effect, which are fair. One dlversion above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

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.

54

50

47

47

109

184

79

59

50

44

39

35

31

28

35

22

S3

19

17

16

14

14

13

13

12

12

14

14

13

11

10

Nov.

8.8

8.8

8.8

8.8

S.4

* .5

.0

.0

.0

.9

.0

.0

6.0

6.3

6.3

6.3

6.3

6.3

6.3

7.0

6.3

*6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

Dec.

6.3

6.3

6.2

*6.3

6.3

6.3

6.3

6.3

6.8

7.8

8.6

9.4

9.0

8.0

8.3

*13

13

11

11

10

9.8

8.4

7.5

7.8

7.9

.5

* .3

.6

.8

.8

7.9

Jan.

7.8

7.3

6.3

6.8

7.4

7.6

7.4

7.3

6.8

7.0

7.3

7.5

7.8

*8.3

8.1

6.6

6.0

6.3

6.6

7.0

7.0

7.0

6.8

6.7

6.5

6. &

6.3

6.4

6.8

6.8

6.8

Feb.

6.3

5.4

4.6

4.2

4.3

4.3

4.5

4.5

4.8

5.0

*5.1

7.3

*7.9

7.2

6.9

7.1

7.5

8.0

8.4

8.7

9.3

10

10

9.4

9.0

8.7

8.1

7.3

_

-

Month

October. ...................................

November. .................'.................

December . ..................................

Calendar year 1940 ......................

January. ...................................

February. ..................................

March. .....................................

April ......................................

May. .......................................

June .......................................

July. ......................................

August .....................................

September. .................................

Water year 1940-41 ..................

. liar.

*7.9

8.8

8.4

8.4

7.9

7.9

7.9

8.8

8.8

8.8

9.2

8.8

8.8

8.8

9.7

9.7

10

10

11

12

12

14

13

13

14

14

15

17

18

19

21

Apr.

33

23

33

34

36

27

39

33

39

45

49

50

49

46

46

45

44

43

40

38

37

37

35

36

39

48

61

79

97

126

-

Secondfoot-days

1,056

307.8

251.9

10,987.1

216.5

193.6

351.6

1,337

11,895

10,996

3,643

773

2,135.7

33,046.1

May

152

310

239

507

470

418

336

347

399

406

461

587

716 641'

498

484

513

512

380

244

188

179

309

368

54S

380

489

380

365

293

282

Maximum

124

8.8

13

196

8.2

10

31

136

716

641

344

35

774

774

June

275

323

361

387

380

329

367

332

357

231

209

309

237

396

368

418

522

641

587

507

503

493

406

464

365

385

330

300

267

248

Minimum

1 10

6.3

B.2

.

6.C

4.2

7.£

33

152

209

34

16

9.1

4.2

July

344

330

318

314

198

156

160

198

179

175

163

156

138

118

86

76

79

88

76

79

76

65

70

61

63

52

61

49

41

39

34

Aug.

33

31

36

27

32

35

28

31

32

33

30

27

26

26

30

28

27

25

33

21

20

20

19

19

19

18

17

17

18

17

16

Mean

34.1

6.93

8.13

30.0

6.98

6.91

11.3

44.6

384

367

117

34.9

70 9

90.5

Sept.

16

15

14

14

14

14

13

13

13

10

9.7

IS

14

14

17

16

16

49

42

31

26

774

295

152

108

86

68

60

99

103

Run-off In 

acre-feet

2,090

413

500

31,780

439

384

697

2,650

33,690

21,810

7,220

1,530

4,220

65,530

* Winter discharge measurement made on this day.

Note.- Stage-discharge relation affected by ice Nov. 15, 16, Dec. 1 to Feb. 38.
SAN JUAN RIVER BASIN 

La Plata River at Colorado-New Mexico State line

203

Location.- Water-stage recorder and masonry control, 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 1941 in reports of Geological Survey. 

February isao to September 1941 in reports of Colorado State engineer.

Average discharge.- 21 years, 37.7 second-feet.

Extremes.- Maximum discharge during year, 1,360 second-feet May 4 (gage height, 5.54 

feet); minimum daily, 0.6 second-foot Nov. 12.

T.920-41: Maximum discharge, 4,750 second-feet Aug. 24, 1927 (gage height, 11.36 

feet); no flow at times in 1922, 1924, 1928, 1938, 1933-40.

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

wmch are fair. Diversions above station for irrigation.

Discharge, in second- feet, water year October 1940 to September 1941

Day

1

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

15

8.3

6.4

6.4

7.9

61

46

25

S.7

6.4

6.0

6.0

4.6

Z.2

2.0

3.2

4.0

3.2

l.S

1.2

2.2

2.0

.8

1.4

1.4

1.0

l.S

1.8

2.6

3.0

1.2

Nov.

2.2

1.1

.9

1.1

l.S

2.6

2.2

1.6

1,0

1.1

.8

.6

1.4

3.5

7.5

5.7

5.2

6.0

10

8.3

7.9

6.8

6.4

5.7

5.7

6.8

7.5

7.5

7.5

7.1

-

Dec.

6.4

6.0

6.0

5.7

6.0

?'.!

6.S

6.0

6.4

7.1

9.4

9.S

9.4

7.1

3.5

 10

10

14

12

11

7.1

3.8

3.S

5.4

5.4

3.0

3.8

4.9

3.8

4.0

4.6

Jan.

4.6

4.0

2.2

4.0

5.4

5.2

4.0

4.6

4.9

6.0

11

11

11

 11

12

9.0

9.4

15

15

14

13

14

13

12

15

11

13

14

16

IS

IS

Feb.

15

12

11

11

11

12

15

14

14

14

15

18

13

12

13

14

15

16

18

19

27

23

25

23

24

21

13

17

_

-

Month

October ....................................

Hove 

Qece

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

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

Calendar vea.r 1940 ..... . ..... . ...

Janu 

Febr

Marc

Apri 

May

ary. ...................................

uary. ..................................

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

I............ ..........................

June .......................................

July .......................................

Augu 

Sept

St. ....................................

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

Water year 1940-41 ......................

Mar.

IS

21

22

21

22

21

21

15

IS

16

15

15

17

24

26

go

22

85

27

36

39

40

43

63

54

49

49

63

a74

a7S

a96

Apr.

a!20

a7S

a 83

a78

a 83

84

92

110

131

154

152

148

138

122

106

111

103

101

93

89

104

14S

154

146

158

255

353

379

392

448

Seocndf cot-days

244.5

133.5 

209.3

5,542.3

322.3 

460 

1,072

4,711 

15,683

8,270

1,420.3

408.3 

2,198.6

35,132.8

. May

434

508

544

1,180

802

630

640

636

705

802

712

827

978

957

719

598

577

565

502

286

158

131

148

192

239

242

266

231

184

188

162

Maximum

61

10 

14

186

18 

27 

96

448 

1,120

460

115

44 

585

1,120

June

154

172

192

196

222

178

217

281

244

239

174

176

202

233

279

295

348

414

460

437

431

417

389

423

335

324

270

248

180

140

-

Minium*

o.e

.8 

3.0

0

2.2

11 

15

78 

131

140

6.4

3.S 

2.4

.f.

July

115

39

70

52

49

40

30

83

86

63

76

66

80

70

59

51

61

62

46

25

13

10

S.7

19

42

12

16

10

9.8

9.4

6.4

Aug.

4.9

3*8

3.2

3.5

3.5

3.8

10

10

16

44

25

^6

14

14

32

26

20

18

16

14

14

14

13

10

9.8

9.0

8.7

8.3

8.3

7.5

5.0

Mean

7.89

4.45 

6.75

15.1

10.4 

16.4 

34.6

157 

506

276

45.8

13.2 

73.3

96.3

Sept.

5.7

6.7

5.7

5.7

5.2

4.3

4.3

4.3

4.0

3.8

« 

3.5

2.4

9,0

23

20

12

10

13

20

50

33

474

585

204

128

92

76

75

178

142

-

Run-off In

acre-feet

485

26S 

415

10,990

639 

912 

2, ISO

9,340 

31,110

16,400

2,820

810 

4,360

69,690

* Winter discharge measurement made on this day.

« Ho gage-height record; discharge computed en basis of records for La Plata Blver at Hesperus, 

and Cherry Creek near {led Mesa.

Note.- Stage-discharge relation affected by ice Dec. 20 to Jan. 10.

461676 O-42-14
204 SAN JUAN RIVER BASIN

La Plata River near Farmington, N. Mex.

Location.- Water-stage recorder, lat. 36°44'30B , long. 108°14 I 45", in SW« sec. 7, T. 29 

N., R. 13 W., 1,800 feet upstream from mouth and 2$ miles northwest of Farmington.

Records available.- March 1938 to September 1941.

Extremes.- Maximum discharge and gage height during year not determined; no flow at times.

TS58-41: 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 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

 Oct.

84 

IS 

14 

13 

14

18 

44 

38 

22 

10

e

7 

5 

3 

2

\

1 

1 

1

1

0

o

0 

0 

0

0 

aO 

aO 

al 

aO 

aO

Nov.

al 

2 

2 

2 

2

2 

3 

2 

2 

4

4 

3 

2 

2 

5

7 

14 

14 

48 

. 25

14 

12 

11 

14 

15

13 

15 

17 

15 

14

Dec.

14 

15 

17 

15 

17

18 

IS 

22 

19 

14

29 

 28

 IS 

19 

blO

*b4 

blO 

22 

 23 

26

28 

b30 

b20 

d30 

d60

d40

aeo

d25 

d30 

 53 

75

Jan.

46 

dS5 

d25 

*b!5 

blO

bll 

b!2 

*13 

14 

14

18 

35 

*35 

31 

25

17 

blO 

blO 

bll 

b!2

 22 

15 

18 

11 

21

21 

22 

25 

53 

d59 

d40

Feb.

a35 

a30 

a25 

a25 

d25

26 

56 

67 

48 

93

95 

d80 

a60 

a40 

d25

33 

48 

42 

82 

82

175 

d!70 

a!60 

dlSO 

140

S9 

45 

34

Month

Oct 

NOT 

Dec

C

Jar 

Fet 

Uar 

Apr 

Maj 

Jur 

Jul 

Auj 

Sep

n

alendar year 19> 0. .....................

ater year 1940-4

Uar.

35 

SI 

63 

41 

30

34 

26 

23 

19 

17

16 

IS 

26 

46 

137

79 

60 

43 

41 

52

61 

78 

70 

89 

86

74 

70 

77 

92 

100 

111

Apr.

164 

164 

al60 

a!40 

127

111 

111 

118 

127 

147

144 

144 

144 

124 

108

92 

86 

S6 

92 

S6

105 

179 

172 

121 

105

235 

465 

d460 

d350

338

Seoondfoot-days

306

2S6 

759

4,166

706 

1,980 

1,778 

4,9S6 

24,274 

6,418 

924 

1,233 

5,101

48,750

toy

473 

646 

930 

d2,000 

al,000

dSOO 

d550 

3600 

d650 

682

1,430 

2,070 

2,370 

1,970 

1,650

1,410 

1,030 

756 

464 

261

218 

190 

212 

200 

281

274 

254 

295 

267 

236 

1S5

Maximum

84 

48 

75

590

59 

175 

137 

465 

2,370 

370 

212 

604 

1,150

2,370

June

170 

118 

122 

134 

175

195 

195 

248 

a220 

d200

al90 

a!80 

alSO 

175 

165

142 

103 

a90 

d200 

281

281 

354 

a360 

a370 

a320

a280 

a270 

a260 

a230 

d220

July

212 

180 

122 

75 

40

dl5 

6 

320 

23 

14

4 

2 

a2 

a2 

a2

al 

al 

al 

al 

al

al 

al 

al 

al 

dlOO

a40 

aSO

alO 

a7 

a5 

4

Minimum

0

1

4

0

10 

25

16 

S6 

1S5 

90 

1 

2 

0

0

Aug.

6 

6 

7 

6 

5

6 

66 

46 

240 

a30

12 

6 

4 

2 

65

604 

a40 

22 

15 

14

10 

7 

5 

4

3

2 

2 

2 

2 

2 

2

Mean

9.9 

9.5 

24.5

11.4

22.S 

70.7 

57.4 

166 

7S3 

214 

29.8 

39.8 

170

134

Sept.

2 

2 

2 

2 

2

2

1 

1 

1 

0

0

1 

488 

d250 

26

14 

12 

14 

13 

121

394 

dl,000 

1,160 

323 

160

a!40 

a!20 

dlOO 

610 

d!60

Run- off in 

acre-feet

607 

567 

1,510

8,270

1,400 

3,930 

3,530 

9,S90 

48,150 

12,730 

1,330 

2,460 

10,120

96,710

* Winter discharge measurement made on this day.

a No gage-height record; discharge computed on basis of weather records and records for Los Fines 

River at Ignacio, and Anlmas River near Cedar Hill and at Farmington.

b Stage-discharge relation affected by ice.

d Incomplete or doubtful gage-height record; discharge computed on basis of gage heights, weather 

records, and records for Los Fines River at Ignacio and Anlmas River near Cedar Hill and at Farmington ' 4 P, I fi 7 R
SAN JUAN RIVER BASIN 205

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. Prior

to May 14, 1941, water-stage recorder at site 700 feet downstream at different datum.

Datum of gage is 6,466.46 feet above mean sea level.

Drainage area.- 66 square miles.

Records available.- October 1933 to September 1941 in reports of Geological Survey. March 

1928 to September 1941 in reports of State engineer.

Average discharge.- 13 years, 9.64 second-feet.

Extremes.- Maximum discharge during year, 377/second-feet May 4 (gage height, 3.40 feet, 

site and datum then in use); no flow Nov. 1-5, 12-18, and probably a few days in 

January.

1928-41: Maximum discharge, 1,480 second-feet Aug. 25, 1940 {gage height, 5.90 

feet, site and datura then in use), from rating curve extended above 800 second-feet on 

basis of slope-area measurement; no flow at times during 1931, 1933-36, 1938-41.

Remarks.- Records fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 tc September 1941

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

SI

Oct.

2.1

1.0

.5

.3

.2

1.6

l.S

1.6

1.6

1.7

1.7

1.4

1.4

1.0

.7

.7

.6

.4

.3

.3

.3

.3

.2

.2

.2

.2

a. 4

a. 6

1.0

.7

.3

Nov.

0

0

0

0

0

.4

.4

.5

.6

.5

.2

0

0

0

0

o

0

0

.8

1.4

1.2

*al.O

al.O

al.O

al.O

a. 8

a. 8

a. 6

a. 6

a. 6

-

Dec.

0.6

a. 6

a. 5

.5

.5

.3

.3

.4

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

Jan.

> 0.2

Feb.

 1.0

(«)

-

-

-

Month

October. ...................................

November. ..................................

December. ..................................

Calendar year 1940 ......................

January. ....................................

February. ..................................

March. .....................................

April ......................................

May

June .......................................

July........ ...............................

August .....................................

September. .................................

Water year 1940-41 ......................

Mar.

2.2

3.4

3.2

3.0

3.6

2.8

2.2

2.0

2.6

*2.6

3.2

3.2

3.2

3.4

3.6

4.0

5.0

6.3

9.0

14

16

20

24

29

18

14

14

22

27

28

45

Apr.

66

34

28

22

29

24

22

28

33

44

35

36

32

26

22

24

22

20

18

24

25

37

37

38

40

66

107

110

115

115

-

Secondfcct-days

25.3

13.4

8.5

1,289.2

6.2

2S.O

339.5

1 279

4 945

1 425 '253.8 209.2

243.8

8,786.7

May

132

132

149

326

262

226

244

a240

a250

a270

a210

a220

a220

195

1S5

155

146

146

137

102

78

78

83

107

105

104

96

96

89

82

75

Maximum

2.1

1.4

.6

80

_

45

115

326

71

14

25

43

326

June

71

70

68

58

57

55

60

67

a65

a 63

a 60

5S

56

53

55

53

55

51

51

44

39

35

33

33

33

23

18

15

14

12

-

Minimum

0.2

0

.2

0

_

_

2.0

18

75

12

5.4

2.7

1.4

0

July

10

6.9

5.9

6.3

6.3

5.9

5.4

5.6

6.3

S.7

8.7

12

12

14

11

11

12

12

12

12

11

7.5

5.7

6.5

6.7

6.5

6.1

7.1

7.5

B.I

7.1

Aug.

6.5

3.9

3.3

3.3

3.0

4.9

6.1

3.9

5.7

25

16

11

9.4

S.3

6.7

10

9.2

8.7

8.3

7.7

6.9

7.5

6.1

5.0

4.7

3.7

3.3

3.O

2.7

2.7

2.7

Mean

0.82

.45

.27

3.52

0.2

1.0

11.0

42* 6

160

47»5

8.51

6.75

8.13

24.1

Sept.

2.7

2.6

2.4

2.2

2.0

1.8

l.S

l.S

1.6

1.4

1.5

1.6

l.e

4.5

8.5

5.9

3.8

4.5

17

20

20

43

28

11

7.3

5.4

5.4

4.5

12

IB

-

Run-off in 

acre-feet

50

27

17

2,560

12

56

673

2,540

9,810

2 f oou fwn 

523

415

484

17,440

* Winter discharge measurement made on this day.

a Ho gage-height record; discharge computed on basis of record for La Plata River stations.

Note.- Stage-discharge relation affected by ice Dec. 11 to Feb. 28.
206 SAN JUAN RIVER BASIN 

West Mancos River near Mancos, Colo.

Location.- Water-stage recorder, lat. 37022'30", long. 108015'20", in sec. 14. T. 36 N., 

R. 13 W., li miles upstream from confluence with Middle Mancos River and 3t miles 

northeast of Mancos.

Drainage area.- 42.1 square miles.

Records available.- September 1910 to December 1911, April 1938 to September 1941.

Extremes.- Maximum discharge during year, 1,080 second-feet May 13 (gage height, 4.55 

reet;, from rating curve extended above 260 second-feet; minimum observed, 4.2 

second-feet Dec. 9 (discharge measurement) probably less during period of no record.

1910-11, 1938-41: Maximum discharge, that of May 13, 1941; minimum daily recorded, 

2.5 second-feet Aug. 20, 1939, probably less during period of ice effect.

Remarks.- Records fair. No diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

34 

26 

23 

20 

42

59 

42 

34 

28 

24

21 

18 

16 ' 

15 

14

13 

13 

12 

11 

11

10 

9.9 

9.6 

9.3 

9.3

9.9 

14 

12 

10 

11 

9.6

Nov.

9.9 

9.9 

10 

10 

8.3

9.6 

8.8 

S.8

e.8

9.6

9.0 

9.3 

8.3 

9.9 

11

11 

9.9 

9.3 

9.0 

8.8

8.8 

S.5 

8.3 

8.5 

8.8

8.8 

8.1 

9.0 

9.6 

8.3

Dec.

t4.2

Jan. Feb.

Month

Oct 

Not 

Dec

C

Jar 

Fel 

Mar 

Apr 

Ma5 

Jun 

Jul 

Aug 

Sep

VI

alendar year

ater year

liar.

9.0 

8.3 

7.S 

7,4 

8.1

7.2 

8.1 

8.5 

9.0 

9.0

10 

9.9 

9.0 

8.5 

9.0

9.0 

10 

13 

16 

20

17 

17 

20 

18 

15

14 

17 

20 

23 

28 

46

Apr.

50 

32 

26 

24 

29

26 

28 

36 

51 

53

37 

33 

26 

23 

21

20 

18 

16 

17 

17

19 

18 

20 

27 

34

67 

99 

101 

99 

124

Secondfoot -days

590.6 

275.9

-

431.8 

1,191 

12,334 

7,622 

3,768 

S98 

1,302.0

-

May

128 

133 

163 

295 

216

253 

228 

244 

420 

534

553

718 

828 

645 

549

542 

580 

633 

700 

316

244 

230 

319 

443 

432

392 

365 

335 

322 

298 

256

Maximum

59 

11

-

46

124 

828 

328 

233 

49 

190

-

June

253 

253 

253 

258 

272

244 

304 

281 

233 

208

190 

170 

170 

190 

198

195 

211 

250 

266 

278

286 

295 

292 

328 

316

328 

307 

295 

256 

242

July

233 

225 

214 

205 

19S

170 

160 

177 

175 

153

146 

146 

140 

133 

113

111 

101 

99 

97 

90

81 

76 

73 

72 

67

59 

62 

55 

48 

47 

42

Minimum

9.3 

8.1

_

7.2 

16 

128 

170 

42 

13 

9.0

-

Aug.

39

39 

37 

36 

35

38 

35 

40 

47 

49

42 

34 

31 

31 

39

38 

34 

28 

25 

24

22 

19 

17 

16 

15

14 

14 

13 

14 

17 

16

Mean

19.1 

9.20

_

13.9 

39.7 

398 

254 

122 

29.0 

43.4

-

Sept.

14 

13 

12 

11 

10

9.9 

9.9 

9.9 

9.3 

9.0

9.0 

9.0 

20 

50 

34

29 

24 

62 

56 

40

33 

190 

149 

93 

74

64 

56 

53 

78 

72

Run-off In 

acre-feet

1,170 

547

-

856 

2,360 

24,460 

15,120 

7,470 

1,780 

2,580

-

t Result of discharge measurement.
SAN JUAN RIVER BASIN £07

Mancos River near Towaoc, Colo.

Location.- Water-stage recorder, lat. 37°02', long. 108°45' In NWi sec. 18, T. 32 N., R.

 17 w., at crossing of U. S. Highway 84, 12 miles south of Towaoc. Datum of gage Is 

5,051.17 feet above mean sea level, unadjusted.

Drainage area.- 550 square miles.

Records available.- October 1933 to September 1941 In reports of Geological Survey. 

Feoruary isai to September 1941 In reports of State engineer.

Average discharge.- 20 years, 57.6 second-feet.

Extremes.- Maximum discharge during year, 1,290 second-feet May 14 (gage height, 5.90

 feet): no flow Aug. 1-7, 10.

1921-41: Maximum discharge, 4,900 second-feet Aug. 26, 1934 (gage height, 6.55 

feet, site and datum then In use); no flow at times.

Remarks.- Records fair. Diversions above station for irrigation.

Discharge, in second-feet, water year October 194o to September 1941

Day

1

2

3

4

5

6

7

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.

el

28

22

17

15

23

33

26

23

22

18

17

17

16

15

15

15

13

12

12

11

10

10

10

9.3

9.4

9.3

14

12

12

9.8

Nov.

12

12

12

12 ,

9.8

9.3

7.8

7.4

6.6

9.4

5.2

5.2

6.2

5.2

4.2

5.2

7.B

12

IS

13

13

11

9.0

6.4

6.4

4.3

4.3

4.B

5.6

6.8

-

Dec.

4. a

2.9

2.9

2.9

3.3

4.6

2.3

2.8

*6.6

6.6

6.6

6.6

6.6

6.6

6.6

6.6

5.6

5.6

5.6

5.6

5.6

6.0

6.6

3.2

8

8

S

8

8

S

8

Jan.

6

6

6

6

10

*14

12

10

10

10

10

10

10

10

10

10

#10

10

11

12

14

11

13

11

14

14

16

15

13

23

22

Feb.

18

IS

#16

16

20

20

26

24

24

24

24

23

37

35

31

31

42

46

46

75

89

98

89

1O2

94

100

76

63

.

_

-

Month

October. ...................................

November. ..................................

December. ..................................

Calendar year 194O ......................

January. ...................................

February. ..................................

March. .....................................

April ......................................

May........................................

June. ......................................

July. ...............;......................

August. ....................................

September. .................................

Water year 194O-41 ......................

Mar.

72

107

136

110

109

115

106

96

95

95

68

70

71

72

72

102

89

83

92

125

126

128

130

140

133

110

112

130

149

150

150

Apr.

168

159

125

101

101

118

113

126

134

152

143

134

134

126

113

112

104

104

104

136

120

154

154

136

123

193

287

556

433

367

Seoondfoot-days

537.3

255.6

185.1

10,028.2

364

1,317

3,343

5,045

17,933

8,034

3,273.2

609.4

3,082.0

43,984.1

-

May

370

274

333

620

7S8

502

489

498

481

752

SIB

914

1,000

983

794

800

800

800

B66

556

538

520

580

595

464

394

333

322

310

249

252

Maximum

61

IS

8.2

857

28

102

150

556

l.OOO

339

814

40

500

1,000

June

242

242

222

247

300

289

292

322

339

327

316

319

307

264

262

S5S

292

282

259

235

255

235

272

264

264

259

224

204

193

214

Minimum

9.4

4.2

2.3

0

6

16

68

101

249

193

.5

O

1.0

0

July

214

193

214

214

172

154

154

145

145

136

136

136

123

123

120

112

104

89

75

62

51

42

42

42

172

46

21

12

11

2.7

.5

Aug.

O

O

o

0

0

o

0

2.8

5.6

O

23

36

40

40

40

40

40

39

35

88

25

22.

19

18

15

16

24

87

87

16

84

Mean

17.3

8.52

5.97

27.4

11.7

47.0

106

168

579

263

106

19.7

103.

121

Sept.

24

15

11

7.0

4.0

4.0

3.0

1.5

1.0

2.0

2.5

2.0

a40

136

96

93

51

136

136

188

136

a500

436

218

170

158

158

168

152

152

Run-off la 

acre-feet

1,070

507

367

19,900

722

2,610

6,630

10,010

36,580

15,940

6,490

1,210

6,110

87,250

» Winter discharge measurement made on this day. 

a Ho gage-height record; discharge computed on basis of record for La Plata River at Oolorado-Kew

Mexico State line.

Hote.- Stage-discharge relation affected by ice Deo. 1O-13, Dec. 18 to Jan. 20, Feb. 2.
208 SAN JUAN RIVER BASIN 

East Mancos River near Mancos, Colo.

Location.- Water-stag 5 recorder, lat. 37°22'10", long. 108°13'35", in NEi sec. 24, T. 

30 feet upstream from mouth and 4 miles northeast of Mancos.

Drainage area.- 11.1 square miles.

Records available.- March 1938 to September 1941.

Extremes.- Maximum discharge during year, 642 second-feet May 8 (gage height, 2.67 feet), 

rrom rating curve extended above 130 second-feet; minimum dally recorded, 0.5 secondfoot Oct. 25, 26, may have been less during period of no record.

1938-41: Maximum discharge, that of May 8, 1941; no flow Aug. 17-27, 1939.

Remarks.- Records fair. Diversions above station for Irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Daj

1

2

3

4

5

6

7

8

9

10

11

12

13

14

IS

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Oct.

4.S

4.5

3.8

5.2

8.9

17

11

7.8

6.3

5.1

4.2

3.8

3.2

3.0

2.8

2.2

3.1

3.0

1.9

1.9

1.9

1.9

1.7

1.2

.5

.5

1.0

.8

1.0

1.5

.9

Nov.

0.9

1.0

1.3

1.2

.9

1.1

.9

1.1

1.1

1.1

.8

1.0

.7

1.1

1.3

1.3

1.3

1.4

1.5

1.5

1.4

1.4

1.3

1.3

1.1

1.1

1.1

1.3

1.5

1.3

"

Dec.

f

Jan. Feb.

Month

October ....................................

November ..................................:

December... .................................

Calendar year ......................

January ....................................

February. ..................................

March. ................... . a?1.. .................. .... ....

June .......................................

July.......................................

Auittst.... .................................

September . .................................

Water year ......................

Mar.

1.6

1.6

1.6

1.6

1.6

l.S

1.7

3.0

2.1

2.6

fe.8

2.8

2.1

2.2

2.4

2.6

3.2

3.8

4.8

6.0

5.4

5.4

6.3

5.7

4.5

4.0

4.5

5.4

6.3

6.9

8.9

Apr.

12

8.4

6.9

6.3

6.6

6.0

6.0

7.2

11

14

12

11

10

7.8

6.9

6.3

6.0

6.3

6.3

6.6

7.8

8.4

7.2

8.4

12

18

32

35

34

47

Secondfoot-days

112.4

34.9

-

_

_

114.2

373.4 

3,413

2,830

683.7

168.4

242.4

-

May

36

37

70

167

72

86

99

165

128

167

179

260

156

176

131

131

131

119

107

62

41

50

70

101

113

107

105

90

88

92

77

Maximum

17

1.5

-

_

_

8.9

47 

AUU ofin

133

56

11

37

-

June

88

105

113

99

101

95

103

92

75

59

53

53

62

77

95

109

126

133

133

123

117

113

113

111

99

92

88

80

65

58

Minimum

0.,

_

-

_

_

1.

6.( 

36

53

4.C

1.

.

-

July

56

56

49

46

40

32

29

36

40

32

31

26

24

22

17

15

14

12

8.9

7.2

7.8

6.0

5.1

4.0

14

11

11

9.5

7.2

6.6

8.4

Aug.

8.4

8.4

7.S

6.9

6.9

S.9

8.4

10

11

9.5

7.8

6.3

5.4

5.4

6.9

7.2

6.3

5.4

4.5

3.8

3.6

2.8

2.4

2.1

1.9

1.8

1.7

1.5

1.6

2.4

2.0

Mean

5 3.63

7 1.16

-

_

_

i 3 68

} 12.4 

110

94.3

) 22.1

j 5.43

3 8.08

-

Sept.

1.7

1.5

1.3

1.2

1.1

1.0

1.0

1.0

.9

.9

.8

.8

3.4

13

8.9

7.8

6.3

15

15

9.5

6.6

37

37

21

16

9.5

5.7

4.0

6.3

7.2

Run-off In 

acre-feet

223

69

-

_

_

227

741 

6^770

5,610

1,360

334

481

-
SAN JUAN RIVER BASIN 

Middle Mancos River near Mancos, Colo.

209

Location.- Water-stage recorder, lat. 37°22'15", long. 10S°13'35", In SEi sec. 13, T. 36

 H., R. 13 W., 500 feet upstream from East Mancos River and 4 miles northeast of Mancos.

Drainage area.- 13.7 square miles.

Records available.- March 1938 to May 1941.

Extremes.- Maximum discharge during period, 233 second-feet May 14 (gage height, 4.08

 feet), from rating curve extended above 170 second-feet; minimum dally recorded, 0.1 

second-foot Dec. 2-10; probably no flow during period of no record.

1938-41: Maximum discharge, that of May 14, 1941; no flow Aug. 24-27, Sept. 3-5, 

Nov. 21, 1939, and at times during period of no record.

Remarks.- Records good except those below 10 second-feet and those for periods of no

 gage-height record, which are fair. Diversions above station for Irrigation. No gageheight record May 28 to Sept. 30 (stream moved away from recorder) and discharges not 

computed June 1 to Sept. 30.

Discharge, in second-feet, water year October 1940 to September 1941

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.

l.S 

l.S 

2.0 

l.S 

2.2

3.3 

3.S 

2.6 

1.9 

l.S

1.5 

1.6 

1.3

.9 

.S

.7 

.6 

.6 

.5 

.5

.5 

.4 

.3 

.3 

.3

.3 

.4 

.4

.a

.3 

.3

Nov.

0.3 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.3 

.3 

.3 

.3 

.3

.3 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

.2 

.2 

.2 

.2 

.2

Dec.

0.3 

.1 

.1 

.1 

.1

.1 

.1 

.1 

.1 

.1

Month

Oet 

No\

Dec

C

Jar 

Fel 

Mar 

Apr 

Ha, 

JUT 

Jul 

Aug 

Sei

1

Jan. Feb.

tO. 2

ember 1 

alendar

 10. ...,-----------------------

year

rater year

.......................

Mar.

0.2 

.2 

.2 

.2 

.2

.4 

.4 

.4 

.5

.4

.4 

.5 

.5 

.5 

.6

.6 

.6 

1.0 

1.3 

2.5

3.1 

3.8 

3.8 

3.5 

2.5

2.1 

2.6 

4.6 

6.3 

7.2 

10

Apr.

10 

6.9 

5.S 

6.0 

7.5

6.6 

7.2 

9.3 

12 

14

11 

11 

9.3 

S.I 

7.2

6.9 

6.9 

6.9 

6.6 

7.8

S.4 

8.7 

S.4 

9.3 

11

21 

33 

33 

33 

38

Secondfoot-days

35.2 

6.7 

1.1

-

60.9 

372.S 

4,222

-

Bay

38 

40 

52 

116 

a55

a65 

a75 

allO 

a!50 

170

173 

187 

201 

223 

164

152 

166 

165 

161 

133

135 

140 

178 

161 

167

158 

166 

a!40 

a!40 

a!36 

alSO

Maximum

3.3

.3 

.2

-

10 

38 

223

-

June

t*5

Minimum

July

0.3 

.2 

.1

-

.2

5.8 

38

-

Aug.

Mean

1.14 

.22 

.11

-

1.96 

12.4 

136

-

Sept.

Run-off in 

acre-feet

70 

13 

2.2

-

121 

739 

8,370

-

t Result of discharge measurement.

a No gage-height record; discharge computed, on basis of record for Eaet Mancos River near Mancos.

Bote»- Stage-discharge relation affected by ice Mar. 1-19.
210 SAN JUAN RIVER BASIN 

McElmo Creek near Cortez, Colo.

Location.- Water-stage recorder, lat. 37°20', long. 106°40', in NEi sec. 1, T. 35 N., 

R. 17 w., half a mile downstream from Alkali Canyon and 5 miles southwest of Cortez. 

Prior to September 1929, water-stage recorder at site 3 miles downstream; records 

equivalent.

Drainage area.- 233 square miles.

Records available.- October 1940 to September 1941 in reports of Geological Survey. May 

1926 to September 1929 and October 1940 to September 1941 in reports of State engineer.

Extremes.- Maximum discharge during year, 4,540 second-feet September 22 (gage height, 

6.85 feet, from floodmarks), by slope-area method; minimum daily, 10 second-feet Nov. 

14.

1926-29, 1940-41: Maximum discharge, that of Sept. 22, 1941; no flow Dec. 30, 31, 

1926, Jan. 6, 7, 13, 1927.

Remarks.- Records fair. Diversions above station for Irrigation. Flow is mainly return 

water from Irrigated lands of Montezuma irrigation district.

Discharge; in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

8 

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 

72 

62 

46 

104

71 

52 

50 

56 

64

65 

56 

52 

54 

67

59 

58 

51 

47 

4S

44 

40 

41 

44 

45

44 

86 

52 

33 

3S 

40

Nov.

42 

54 

41 

42 

42

46 

47 

4S 

52 

52

46 

26 

16 

10 

17

17 

21 

40 

94 

67

65 

60 

45 

31 

27

16 

16 

15 

23 

20

Dec.

32 

23 

32

29 

22

31 

32 

33 

32 

42

51 

41 

37 

32 

18

72 

63 

56 

52 

50

41 

28 

30 

34 

35

17 

28 

26 

29 

36 

40

Jan.

31 

17 

20 

29 

38

30 

39 

40 

32 

29

31 

31 

37 

36 

35

22

15 

11 

17 

IS

23 

20 

IS 

17 

24

23 

23 

28 

52 

53 

34

Feb.

34 

30 

27 

2S 

26

25 

37 

60 

40 

53

80 

105 

75 

71 

74

80 

88 

89 

133 

115

157 

110 

95 

100 

90

70 

55 

58

Month

Get 

Noi 

Dec

C

Jar 

Fet 

Mat 

Api 

Baj 

Jur 

JvG 

Aug 

Set

1

alendar year

ater year 1940-4

liar.

59 

99 

81 

62 

64

78 

57 

47 

54 

50

50 

47 

63 

100 

146

97 

78 

72 

75 

71

71 

72 

78 

97 

81

72

64 

57 

50 

47 

46

Apr.

64 

78 

63 

64 

64

59 

59 

59 

54 

52

83 

S6 

84 

88 

36

S4 

75 

74 

86 

83

78 

39 

92 

S3 

77

108 

236 

256 

178 

150

Secondfoot-days

1,743 

1,138 

1,124

-

873 

1,995 

2,135 

2,797 

3,003 

3,625 

3,371 

2,845 

5,120

29,319

May

103 

100 

93 

252 

111

93 

72 

62 

55 

48

51 

46 

48 

43 

48

55 

61 

57 

58 

80

90 

111 

153 

171 

151

142 

164 

142 

122 

108 

108

Maximum

112 

94 

72

-

53 

157 

146 

256 

252 

178 

135 

165 

800

SOO

June

110 

106 

103 

93 

110

128 

161 

17S 

171 

140

149 

135 

125 

120 

115

110 

110 

105 

105 

100

100 

90 

150 

120 

129

124 

115 

110 

108 

115

July

103 

103 

104 

101 

110

124 

135 

111 

111 

113

120 

120 

113 

113 

110

108 

106 

110 

106 

111

110 

106 

103 

100 

108

12S 

101 

101 

100 

95 

87

Minimum

33 

10 

17

11 

25 

46 

52 

46 

90 

37 

58 

56

10

Aug.

S7 

34 

82 

100 

79

77 

83 

82 

86 

103

126 

100 

S3 

93 

165

126 

124 

113 

104 

104

93

89 

87 

84 

83

76 

69 

76 

69 

58 

60

Mean

56.2 

37.9 

36.3

-

28*2 

71.2 

70.5 

93.2 

96.9 

121 

109 

91.3 

171

S1.7

Sept.

76 

SO 

73 

70 

90

96 

98 

89 

68 

77

65 

66 

142 

194 

218

115 

110 

200 

153 

171

135

800 

650 

250 

210

170 

165 

165 

170 

164

Run-off In 

acre-feet

3,460 

2,260 

2,230

-

1,730 

3,960 

4,330 

5,650 

5,960 

7,190 

6,690 

5,640 

10,160

59,160

Sote.- No gage-height records Feb. 22-27, June 13-23, Sept. 22-29; discharge computed on basla of 

two discharge measurements and weather records.
PARIA RIVER BASIN 211

Parla River at Lees Ferry, Ariz..

Location.- Water-stage recorder, lat. 36°52'15", long. 111°36'30", in NWiNEi sec. 13, T. 

40 N., R. 7 E., hair 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.- November 1923 to September 1941.

Average discharge.- 18 years, 36.4 second-feet.

Extremes.- Maximum discharge during year, 7,500 second-feet July 24 (gage height, 12.3 

 feet), from rating curve extended above 1,100 second-feet on basis of slope-area determinations at gage heigh'ts 11.2 and 12.4 feet; minimum, 1 second-foot Dec. 15.

1923-41: Maxinum discharge, 16,100 second-feet Oct. 5, 1925 (gage height, 17.5 

feet), by float-area method; no flow during several periods in December and January of 

Tnany years.

Remarks.- Records good. During the year 47 discharge measurements were made, 

above station for irrigation.

Diversions

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

2O

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

13 

12 

10

9 

18

153 

37 

17 

14 

14

14 

14 

14 

14 

12

12 

12 

11 

12 

11

11 

1O 

1O 

11 

11

188 

265 

44 

25 

22 

20

Nov.

19

18 

18 

18 

19

18 

18 

IS 

19 

31

36 

23 

13 

12

12

13 

15 

20 

30 

98

38 

30 

IS 

12 

16

23 

22 

19 

SI 

22

Dec.

24 

22 

21 

20 

IS

16 

19 

17 

17 

19

22 

38 

45 

12 

3

9 

7 

6 

5 

19

31 

33 

32 

32 

36

26 

21 

32 

36 

81 

73

Jan.

73 

31 

13 

12 

13

23 

25 

27 

22 

21

22 

35 

54 

47 

44

38 

24 

15 

19 

26

29 

30 

37 

31

51

41 

43 

43 

61 

76 

47

Feb.

33 

30 

27 

26 

26

27 

36 

57 

- 39 

39

58 

179 

126 

59 

46

72 

67 

70 

84 

72

172 

151 

142 

96

189

82 

53 

42

Month

Oct 

NOT

Dec

C

Jar 

Fet 

Max 

Apl 

Maj 

Jur 

Jul 

Aug 

Sep

fl

alendar year 194 0... ...................

ater year 1940-4

Mar.

49 

390 

241 

i 147 

105

109 

65 

54 

46 

46

37 

36 

37 

56 

86

56 

37 

36

40 

47

50 

39 

44 

44 

37

33 

31 

30 

27 

27 

24

Apr.

25 

46 

30 

24 

23

37 

27 

23 

22 

23

50 

337 

304 

336 

147

128 

141 

72 

39 

30

30 

34 

41 

44 

44

105 

138 

114 

78 

66

Secondfoot-days

1,040 

679 

762

14,247

1,073 

2,100 

2,106 

2,558 

1,181 

261 

1,280 

457 

456

13,953

May

80 

84 

64 

78 

98

67

57 

49 

57 

55

42 

33 

28 

23 

23

20 

18 

15 

15 

18

20 

17 

15 

27 

23

60 

49 

17 

12 

10 

7

Maximum

265

96 

73

2,300

76 

189 

390 

337 

98 

62 

672 

S9 

105

672

June

5 

4 

10 

4 

7

7 

6 

19 

62 

36

19 

9 

8 

S 

8

6 

5 

4 

2 

2

3 

3 

4 

4 

3

3 

2 

2 

3 

3

July

3 

3 

2 

 2 

3

2 

2 

2 

15 

24

14 

21 

14 

9 

6

3 

2 

13 

99 

118

43 

27 

22 

672 

30

32 

40 

27 

14 

9 

7

Minimum

9 

12 

3

3

12 

26 

24 

22 

7 

2 

2 

2 

3

2

Aug.

4 

2 

2 

2 

2

3 

3 

20 

26 

50

58 

S9 

31 

16 

16

21 

32 

19 

9

7

6 

5 

4 

4 

4

4 

4 

4 

3 

4 

3

Mean

33.5 

22.6 

24.6

38.9

34.6 

75.0 

67.9 

85.3 

38.1 

8.7 

41.3 

14.7 

15.2

38.2

Sept.

3 

3 

4

4 

4

5 

4 

3 

4 

4

4 

4 

9 

7 

11

8 

6 

5 

10 

7

4 

54 

105 

59 

37

26 

20 

15 

14 

13

Run-off In 

acre-feet

2,060 

1,350 

1,51O

28,260

2,130 

4,170 

4,180 

5,070 

2,340 

51S 

2.54O 

906 

904

27,680
213 LITTLE COLORADO RIVER BASIN

Little Colorado River above Lyman Reservoir, near St. Johns, Arlz.

Location.- Water-stage recorder, lat. 34°30', long. 109°22', In NEiSEi sec. 37, T. 11 

N., R. 28 E., 1 mile downstream from Coyote Creek, 4i miles upstream from Lyman 

Dam, and 13 miles south of St. Johns, at site 600 feet downstream and at datum 1.70 

feet lower than that of gage destroyed by flood July 25, 1940. During period Oct. 

1-15, 1940, staff gage I mile upstream, 600 feet below mouth of Coyote Creek, at 

different datum; Oct. 16-37, 1940, staff gage at present site and at datum 13.08 feet 

lower. ,

Drainage area.- 747 square miles.

Records available.- April 1940 to September 1941.

Extremes.- Maximum discharge during year, 2,520 second-feet July 33 (gage height, 8.56 

reet; from rating curve extended above 600 second-feet to slope-area measurement at 

16,000 second-feet; minimum, 3 second-feet Oct. 23, 26.

1940-41: Maximum discharge, 16,000 second-feet July 25, 1940 (gage height, 17.1 

feet, present datum, from floodmarks) by slope-area method; minimum, about 0.5 secondfoot July 16-24, 1940.

Remarks.- Records good except those above 600 second-feet, which are poor, and those for 

period of no gage-height record, which are fair. Flow regulated by many small 

reservoirs; total capacity, about 16,000 acre-feet. Diversions above station for Irrigation. Staff gages read twice dally Oct. 1-27.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

60 

31

Oct.

8 

3 

7 

7 

6

6 

6 

6 

6 

5

5 

5 

5 

5

4

4 

4 

4 

4 

4

5 

5 

3 

4 

4

3

4 

4 

5 

4 

4

Nov.

#4 

4 

4 

5 

5

5 

5 

4 

4 

4

b4 

4 

b4 

b5 

b5

*b6 

6 

7 

8 

8

8 

7 

8 

8 

3

3 

7 

8 

7 

8

Dec.

3 

 8 

3 

3 

3

3 

3 

& 

S 

9

9 

9 

9 

3 

bS

*b3 

3 

3 

3 

&

7 

7 

b7 

7 

7

b7 

b7 

7 

7 

7 

7

Jan.

7 

*7 

7 

bS 

3

S 

bS 

b8 

b8 

3

10 

14 

13 

12 

13

*b!2 

bll 

bll 

b!2 

b!2

13

13 

13 

13 

13

13

13 

16 

20 

21 

22

Feb.

*21 

20 

20 

23 

23

24 

24 

25 

23 

22

22 

20 

20 

20 

22

25 

*28 

26 

28 

30

31

34 

39 

39 

39

38 

33 

32

lionth

Oct 

No\ 

Dec

C

Jar 

Fel 

Mar 

Api 

Maj 

Jur 

JuJ 

Aug 

Sei

11

alendar year

 11. ....................................

Fater year 1940H

Peak discharge. -

* Winter diseharj 

a No gage-height 

b stage -discharge

Mar.

33 

32 

31 

36 

37

38 

38 

43 

44 

48

50 

50 

53 

66 

121

122 

106 

39 

86 

37

93

97 

92 

94 

99

99 

89 

S3 

92 

110 

122

Apr.

135 

137 

128 

114 

114

132 

134 

133 

158 

175

.189 

205 

205 

192 

179

177 

194 

213 

207 

202

139 

137 

134 

189 

246

308 

365 

421 

465 

516

Secondfoot-days

154 

178 

241

-

367 

749 

2,285 

6,403 

11,591 

1,230 

942 

783 

289

25,212

May

552 

516 

482 

579 

806

1,140- 

1,220 

988* 

781 

688

593 

534 

482 

343 

290

240 

190 

150 

120 

110

103

99 

74 

76 

81

76 

67 

60 

52 

50 

49

Maximum

8 

8 

9

-

22 

39 

122 

516 

1,220 

62 

191 

62 

48

1,220

June

47 

46 

47 

44 

43

45 

45 

44 

49 

51

50 

46 

39 

36 

38

40 

39 

36 

35 

30

34 

36 

40 

41 

62

51 

40 

31 

24 

21

July

20 

20 

22 

23 

25

23 

21 

13 

15 

15

14 

17 

17 

17 

17

SO 

22 

33 

41 

42

29 

24

150 

191 

20

16 

a!6 

a!5 

al4 

a!3 

12

Aug.

12 

13 

13 

14 

14

14 

14 

28 

42 

35

22 

62 

59 

41 

36

36 

30 

22 

21 

21

23

20 

19 

45 

22

20 

19 

18 

17 

16 

16

Sept.

14 

11 

12 

11 

10

10 

9 

8 

7 

6

7 

6 

8 

8 

7

8 

7 

S 

4 

4

4 

4 

4 

4 

4

4 

4 

32 

48 

19

Minimum Mean ^re-feet"

3 5.0 305 

4 5.9 353 

7 7.8 478

_

7 11.8 723 

20 26.3 1,490 

31 73.7 4,530 

114 213 12,700 

49 374 22,990 

21 41.0 2,440 

12 30.4 1,870 

12 25.3 1,550 

4 9.6 573

3 69.1 50,010

May 7 (9}20 a.m.) 1,500 sec. -ft.; July 23 (11:40 p.m.) 2,520 sec. -ft. 

;s measurement made on this day. 

record; discharge Interpolated, 

relation affected by Ice.
LITTLE COLORADO RIVER BASIN 

Lyman Reservoir near St. Johns, Arlz.

-; Water-stage recorder, lat. 34°22', long. 109°23', In 

of 's tOW6r °f Lyman Dam °n Uttle Colora'°

213

sec. 9 T 

' 9 i'

Drainage area.- 790 square miles.

Records available.- May 1940 to September 1941.

iS^ao to^S^ ^" S *2 £ ! temporary wooden dam on spillway. Spill occurred

Contents at 12 p.m.. In acre-feet, water year October 1940 to September 1941

D«T

1

. 2

S

4

6

6

7

8

9

10

11

12

IS

14

15

16

17

18

19

80

21

28

23

84

26

86

27

88

89

SO

SI

Oct.

4,130

4,120

4,130

4,130

4,140

4,140

4,140

4,140

4,140

4,140

4,140

4,140

4,140

4,140

4,150

4,150

4,160

4,150

4,160

4,160

4,160

4,160

4,160

4,160

4,160

4,160

4,160

4,170

4,170

4,170

4,170

Nor.

4,180

4,160

4,180

4,ieo

4, ISO

4,190

4,190

4,190

4,190

4,200

4,200

4,190

4,150

4,120

4,100

4,070

4,040

4,030

4,030

4,030

4,040

4,050

4,080

4,110

4,120

4,130

4,140

4,160

4,170

4,180

-

Dee.

4,190

4,200

4,220

4,230

4,240

4,260

4,270

4,280

4,310

4,230

4,360

4,370

4,400

4,400

4,420

4,430

4,440

4,450

4,460

4,480

4,500

4,500

4,520

4,550

4,560

4,580

4,580

4,600

4,610

4,640

4,650

Jan.

4,670

4,680

4,700

4,710

4,720

4,740

4,740

4,760

4,770

4,790

4,S60

4,900

4,920

4,960

4,980

5,010

5,030

5,040

5,060

5,090

5,100

5,120

5,140

5,160

5,190

5,210

5,240

5,280

5,320

5,370

5,420

Feb.

5,450

5,500

5,530

5,570

5,620

5,670

5,730

5,790

5,S20

5,870

5,910

5,940

5,990

6,020

6,060

6,100

6,160

6,220

6,290

6,350

6,420

6,480

6,570

6,650

6,740

6,800

6,860

6,920

«

-

-

lUr.

7,000

7,060

7,120

7,160

7,230

7,300

7,390

7,470

7,500

7,560

7,620

7,690

7,760

7,920

6,210

8,480

S.670

8,840

8,990

9,140

9,340

9,520

9,680

9,870

10,OOO

10,200

10,400

10,500

10,600

10,800

11,000

Apr.

11,300

11,500

11,800

11,900

12,100

12,300

12,500

12,700

13,000

13,300

13,600

14,000

14,400

14,700

15,000

15,400

15,700

16,100

16,500

16,900

17,200

17,600

17,900

18,200

18,600

19,100

19,700

20,500

21,300

22,200

-

May

22,900

23,500

23,900

24,200

24,800

25,000

25,300

25,100

25,000

24,800

24,600

25,100

25,200

25,100

25,100

25,100

25,100

25,300

25,300

25,300

25,300

25,300

25,300

25,300

25,400

25,500

25,500

25,500

25,500

25,500

25,400

June

25,300

25,300

25,300

25,100

25,000

24,900

24,800

24,600

24,600

24,600

24,500

24,400

24,400

24,300

24,200

£4,800

24,100

24,100

24,100

24,000

24,000

23,900

23,800

23,800

23,800

23,700

23,600

23,600

23,500

23,500

-

July

23,400

23,300

23,200

23,000

22,800

22,700

22,500

22,300

22,200

22,000

21,900

21,800

21,700

21,500

21,400

21,400

21,200

21,200

21,100

21,100

21,000

20,900

21,100

21,300

21,200

21,200

21,200

21,200

21,200

21,100

21,000

Aug.

20,900

20,900

20,800

20,700

20,600

20,500

20,300

20,200

20,200

20,100

19,900

19,800

19,800

19,800

19,700

19,700

19,600

19,500

19,400

19,300

19,300

19,100

19,100

19,000

19,000

18,900

18,800

18,600

18,500

18,400

18,300

Sept.

18,100

18,000

17,600

17,700

17,500

17,300

17,100

17,000

16,900

16,800

16,700

16,600

16,500

16,400

16,300

16,200

16,200

18,100

16,100

16,000

15,900

15,800

15,700

15,700

15,600

15,600

15,500

15,700

15,900

15,900

-

Monthly gage height and contents, water year October 1940 to September 1941

Date

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

Jan. 31....................

Gage height 

(feet)t

S9 52

29 64

30.44

-

31.70

<T<T Qfl

44 57

-

Contents 

(acre-feet)

4,650

-

5,420

oo 200

-

Change In contents 

during month 

(acre-feet)

+470

-*-ll 200

+11,790

t Sage height at midnight.
214 LITTLE COLORADO RIVER BASIN

Little Colorado River below Lyman Reservoir, near St. Johns, Arlz.

Location.- Water-stage recorder and concrete control, lat. 34°23', |.ong. 10&°23', In 

 NEi sec. 9, T. 11 N., R. S3 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 the river 

channel. Water-stage recorder on Lyman Reservoir, 300 feet upstream In control 

tower on Lyman Dam, used to determine water spilled three-eights of a mile north 

at spillway In SWi sec. 4, T. 11 N., R. 28 E.

Drainage area.- 790 square miles.

Records available.- April to September 1941.

Extremes.- Maximum discharge observed during period, 603 second-feet May 8 (Including 

546 second-feet of spilled water); minimum discharge, 0.7 second-foot Apr. 1, 2, 

10-17.

Remarks.- Records good except those for period of spill greater than 250 second-feet 

during May 4-12, which are fair. Discharge completely regulated by Lyman Reservoir 

(see preceding page) except when spill occurs. Since 1929 spill has occurred only 

during periods Apr. 8 to about May 6, 1932, and Apr. 30 to May 13, 1941. Record 

shows all water spilled and released from Lyman Reservoir to the river channel but 

does not Include flow diverted to Lyman canal. See table of miscellaneous discharge 

measurements at end of report for flow In canal.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct. Hov. Dec. Jan. Feb.

Month

Dot 

No\ 

Dec

C

Jar 

Fel 

Mar 

Apr 

Maj 

Jur 

Jul

AU|!

Sej

1

alendar year

lie peric

liar. Apr.

0.7 

.7 

.8 

.8 

.8

.8 

.8 

.8 

.S 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.8 

.8 

.8

.8 

.8 

.8 

.S 

.8

.S 

.8

.e

.8 

4.8

Secondfoot-days

27.0 

5,605 

696 

734 

325.4 

201. S

-

May

53 

151 

260 

331 

425

502 

568 

603 

512 

436

405 

409 

244 

103 

104

63

12 

34 

31 

30

30 

30 

30 

30 

30

30 

30 

30 

30 

30 

30

Maximum

4.S 

603 

30 

27 

14 

14

-

June

30 

30 

30 

30 

30

30 

30

30 

30 

30

50 

28 

23 

23 

20

15 

15 

15 

15 

15

15 

15 

15 

16 

19

25

25 

23 

22 

22

July

22 

22 

22 

22 

24

26 

26 

26 

26 

26

26 

26 

26 

27 

27

27 

26 

26 

26 

26

26 

26 

26 

26 

26

22 

19

16 

14 

14 

14

Minimum

"o.7 

12 

15 

14 

7.0 

1.7

-

Aug.

14 

14 

14 

14 

13

13 

13 

13 

13 

13

13 

13 

9.7 

7.2 

7.2

7.0 

7.0 

7.2 

7.2 

7.2

7.2 

7.2 

7.2 

7.2 

8.9

11 

11 

11 

11 

12 

12

Mean

0.90 

181 

23,2 

23.7 

10.5 

6.73

-

Sept.

13 

14 

14 

14 

14

14 

14 

14 

14 

14

8.1 

3.2 

3.2 

3.2 

3.2

3.2

3il 

3.1 

3.1 

3.0

3.0 

2.9 

2.7 

2.7 

2.7

2.7 

2.8 

2.8 

2.4 

1.7

Run-off in 

acre-feet

64 

11,120 

1,380 

1,460 

645 

400

15,060

Note_.- No gage-height record May 22 to June 10; discharge computed on basis of two discharge 

measurements and watermaster's statement that no change In setting of release gate In Lyman Dam was 

made during that period.
LITTLE COLORADO RIVER BASIN 215

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

Location.- Water-stage recorder, lat. 34°38', long. 104°40', In SWiSWi sec. 2, T. 14

 N., R. 25 E., 500 feet upstream from Zunl River and 3 miles northwest of Hunt.

Drainage area.- 3,680 square miles, Including 830 square miles In closed basin 

surrounding Quemado, N. Jfex.

Records available.- March 1940 to September 1941.

Extremes.- Maximum discharge during year, 516 second-feet May 11 (gage height, 3.37

 feet); minimum, 0.3 second-foot July 22 (gage height, 1.29 feet).

1940-41: Maximum discharge, 577 second-feet July 26, 1940 (gage height, 3.4o 

feet); no flow during long periods In 1940.

Remarks.- Records good. Diversions above station for Irrigation. Some regulation by

 many reservoirs above station, the largest of which is Lyman Reservoir (see p. 213).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

SI 

22 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

34 

47 

44 

36 

31

25 

20 

16 

12 

11

11 

10 

9 

8 

8

8 

8 

7 

7 

7

7 

6 

6 

6 

6

5 

6 

6 

7 

6 

7

Nov.

7 

7 

6 

6 

6

6 

6 

6 

6

6

5 

6 

b6 

b6 

b6

b6 

6 

6 

7 

7

7 

8 

8 

8 

8

9 

9 

8 

8 

8

Dec.

S 

8 

8 

8 

8

8 

8 

8 

8 

9

10 

11 

10 

10 

bll

b9 

12 

12

12 

11

11 

11 

11 

11 

13

11 

12 

11 

11 

13 

16

Jan.

14 

13 

13 

12 

12

14 

13 

12 

11 

11

25 

39 

SB

 25 

22

20 

17 

16 

16 

16

13 

13 

11 

13 

12

11 

11 

11 

12 

11 

11

Feb.

10 

9 

9 

8

e

8 

12 

16 

14

14

14 

11 

10 

11 

11

10 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11

10

Month

Ocl 

Ho\ 

Dec

C

Jar 

Fet 

Ma!

API 

Jfaj 

Jut 

Ju3

!*S01

1

alendar year

y..... .............. ...................

rater year 194O-'

liar.

10 

11 

10 

9 

9

9 

9 

9 

8 

8

e

8 

8 

42 

108

63 

60 

51 

41 

32

36 

31 

26 

33 

60

47 

38 

33 

29 

30 

21

Apr.

18 

14 

14 

16 

17

14 

14 

15 

14 

11

10 

10 

10 

9 

9

9 

8 

7 

7 

7

7 

7 

7 

7 

7

7 

7 

6 

6 

6

Secondfoot-days

427 

204 

320

-

476 

306 

897 

300 

4,590 

227 

144.8 

38.1 

59.1

7,991.0

May

6

e

6

8 

31

105 

196 

294 

394 

464

496 

464 

405 

280 

197

187 

190 

149 

108 

95

80 

63 

54 

60 

54

48 

42

38 

29

26 

25

Maximum

47 9 

16

-

39 

16 

108 

18 

496 

21 

96 

7 

19

496

June

21 

IS 

16 

16 

16

13 

11 

9 

8 

8

7 

8 

8 

7 

8

7 

7 

6 

5 

4

4 

3 

3 

3 

3

2 

2 

2 

1 

1

July

1 

.8

.e

2 

2

1 

.8 

.6 

.6 

.6

.6 

.8 

.8 

.8 

.8

'.8 

1 

2 

1 

.8

,6 

.3 

.3 

1 

1

96 

15 

4 

3

2 

2

Minimum

5 

5 

8

-

11 

8 

8 

6 

6 

1 

.3 

.3 

.3

.3

Aug.

1 

.6 

.3 

.3 

-.3

.3 

.3 

.6 

.8 

4

3 

1 

.6 

.6 

.6

1 

7 

5 

2 

1

.8 

.6 

.8 

.8 

.6

.6 

.6 

.6 

.6 

.8 

1

Mean

13.8 

6.8 

10.3

-

15.4 

10.9 

28.9 

10.0 

148 

7.6 

4.67 

1.23 

1.97

21.9

Sept.

1 

1 

.6 

.3

.3

.3 

.3 

.3

.6 

.8

.8 

.8 

1 

1 

1

1

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

5 

19 

13

Run-Off In 

acre-feet

847 

4O5 

635

-

948 

607 

1,780 

595 

9,10O 

450 

287 

76 

117

15,850

b Stage-discharge relation affected by Ice
216 LITTLE COLORADO RIVER BASIN

Little Colorado River near Hunt, Ariz.

Location.- Water-stage recorder, lat. 34°39', long. 109°42', In NWiNWi sec. 4, T. 14 N., 

 RT"S5~E., at bridge on U. S. Highway 260, 2 miles downstream from Zunl River and 5 

miles northwest of Hunt.

Drainage area.- 6,280 square miles, Including 830 square miles In closed basin surrounding Quemado, N. Hex., and excluding 964 square miles In North Plains Basin, N. Hex., 

a closed basin.

Records available.- May 1929 to October 1933 and March 1940 to September 1941.

Extremes.- Maximum discharge during year, 1,560 second-feet July 25 (gage height, 8.96 

reet); no flow on several days.

1929-33, 1940-41: Maximum discharge, 8,000 second-feet July 28, 1929 (gage height, 

19.0 feet, datum then In use); no flow at times In various years.

Remarks.- Records good except those during periods of no gage-height record and those 

oeiow 5 second-feet, which are poor. Diversions above station for Irrigation. Some 

regulation by many reservoirs above station. The Zunl River contributes practically 

all the Inflow between this station and station on Little Colorado River above Zunl 

River near Hunt.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

48 

56

47 

38 

34

29 

24 

16 

12 

11

12 

10 

9 

8 

8

7 

7 

6

I

6 

6 

6 

S 

5

5

7 

10 

7 

7 

7

NOT.

7 

7 

7 

6 

6

6 

6

6 

7 

6

5 

6 

b6

t>6 

b6

b6 

6

7

11

14 

14 

13 

13 

12

12 

12 

12 

11 

11

Dec.

10 

9 

9 

9 

8

9 

S 

S 

S 

S

15 

22 

13 

13 

14

14 

13 

13 

13 

12

12 

12 

12 

12 

23

16 

17 

16 

16 

17 

72

Jan.

41 

28 

22 

17 

16

16 

16 

15 

15 

15

219 

191 

77 

35 

28

26 

25 

24 

22 

20

17 

16 

16 

15 

15

14 

14 

12 

12 

12 

12

Feb.

12 

11 

11 

10 

10

10 

43 

79 

38 

24

19 

14 

12 

12 ' 12

12 

13 

14 

14 

15

14 

14 

22 

32 

39

67 

65 

53

Month

Oct 

Hot 

Dec

C

Jar 

Pet 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Sei

H

alendar year

ust....... .............................

ater year 1940-<

Mar.

53 

52

47 

44 

37

35

34 

32 

32 

31

30 

30 

32 

297 

612

392 

344 

300 

328 

340

412 

403 

424 

34S 

387

412 

365 

350 

260 

210 

255

Apr.

286 

490 

685 

617 

536

395

367 

348 

298 

269

294 

431 

492 

389 

318

260 

234 

250 

281 

264

al90 

a!50 

a!50 

al60 

a!70

a!80 

a200 

236 

247 

272

Secondfoot-days

465 

269 

453

-

1,023 

701 

6,928 

9,450 

7,423 

273 

615.0 

508.0 

S43.5

28,951.5

May

276 

296 

239 

248 

265

306 

408 

503 

607 

620

601 

556 

490 

345 

232

210 

179 

154 

130 

107

86 

68 

60 

119 

aSO

a50 

a45 

&40 

a35 

a35 

a30

Maximum

56 

19 

72

-

219 

79 

612 

585 

620 

40 

304, 

170 

391

685

June

a30 

a30 

a25 

a40 

a20

a!5 

all 

a9 

a8 

aS

7 

S 

7 

7 

7

6 

6 

5 

4 

3

3 

2 

3

2 

2

1

1 

1 

1 

1

July

1 

1 

1 

2

1

1 

1 

0 

0 

0

0 

0 

0 

.5 

.5

1 

1 

2 

2 

2

2 

.5 

.5

1 

304

251 

24 

8 

4 

2 

1

Mlnll&l

S

5

8

-

12 

. 10 

30 

150 

30 

1 

0 

.5 

.5

0

Aug.

1 

.5 

.5 

.5 

.5

.5 

.5

12 

101 

50

170 

39 

14 

6 

2

10 

49 

27 

10 

4

2 

1 

1

1 

1

1 

.5 

.5 

.5 

.5 

1

Mean

15.0 

9.0

14.6

-

33.0 

25.0 

223 

315 

239 

9.1 

19.8 

16.4 

28.1

79.3

Sept.

1 

.5 

.5 

.5 

.5

.5 

.5 

f5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5

1 

1 

1

.5 

.5 

.5 

.5 

.5

1 

1 

125 

391 

311

Run-off In 

acre-feet

928 

534 

899

-

2,030 

1,390 

13,740 

IS ,746 

14,720 

541 

1,220 

1,010 

1,670

57,420

Peak discharge.- Har. 15 (2 p.m.) 816 sec. -ft; Apr. 3 (3:30 p.m.) 764 sec. -ft.} Apr. 12 (10 p.«.)

1)45 a.m.) 854 sec.-ft.

a No gage-height record; discharge computed on basis of records for stations on Little Colorado 

River near Woodruff and on Silver Creek near Woodruff.

b Stage-discharge relation affected by Ice.
LITTLE COLORADO RIVER BASIN 217

Little Colorado River near Woodruff, Arlz.

Location.- Water-stage recorder and concrete control, lat. 34°48', long. 110°03', In 

sec. 7, T. 16 N., R. 22 E., li miles northwest of Woodruff and 4 miles downstream 

from Sliver Creek. Datum of gage Is 5,123.5 feet above mean sea level (from river 

profile map, based on datum of 1929).

Drainage area.- 8,100 square miles.

Records available.- March 1905 to December 1908, December 1915 to December 1919 (fragmentary), April 1929 to December 1933, September 1935 to September 1941.

Average discharge.- 10 years (1929-33, 1935-41) 76.0 second-feet.

Extremes.- Maximum discharge during year, 6,050 second-feet Max. 15 (gagd height, 9.45 

feet); minimum, Q.Z second-foot June 26.

1929-41: Maximum discharge, 13,000 second-feet July 26, 1940; no flow on 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.

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

which are poor. Diversions above station for Irrigation. Some regulation by 

reservoirs above station (combined capacity, about 67,000 acre-feet).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

102 

91 

58 

90

64 

44 

32 

29 

24

28 

19 

19 

16 

15

14 

11 

11 

10 

10

10

9 

8 

8 

8

9 

63 

178 

40 

19 

IS

Nov.

14 

14 

14 

14 

14

15 

15 

14 

14 

14

14 

10 

9 

11 

14

14 

16 

18 

18 

62

46 

38 

25 

25 

38

38 

25 

17 

17 

18

Dec.

17 

16 

16 

15 

14

14 

15 

14 

14 

15

17 

54 

61 

32 

39

28 

25 

51 

125 

64

36 

26

18 

18 

93

252 

95 

67 

52 

67 

235

Jan.

443 

178 

104 

70

44

40 

31 

29 

26 

28

1,080 

1,710 

497 

209 

132

67 

73 

52 

40 

36

34 

89 

25 

25 

26

25 

25 

29

40 

55 

58

F«t>.

50 

40 

31 

25 

24

go

32 

551 

172 

126

108 

152 

132 

76 

52

48 

79 

104 

117 

100

223

219 

172 

172 

132

122 lid

108

w

Month

Oet 

Hoi 

Dec

C

Jar 

Pel 

Max 

Api 

Maj 

Jur 

JiO 

Auj 

Sei

H

 11

y..... .................................

rater year 1940-4

liar.

104 

70 

201 

146 

91

67 

32 

79 

48 

38

32 

38 

40 

2,59^ 

4,42Q

2,330 

1,290 

970 

770 

666

583 

574 

532 

479 

632

479 

396 

360 

338 

208 

292

Apr.

326 

443 

746 

794 

684

5l5 

384 

314 

280 

271

280 

326 

455 

6S1 

858

608 

349 

253 

280 

262

218 

168 

165 

158 

158

172 

184 

209 

236 

292

Secondfoot-days

1,154 

615 

1,616

26,108.4

5,230

3,327 

18,918 

10,916 

7,826 

333.5 

1,646.7 

2,490 

4,049

58,200.2

May

303 

314 

303 

253 

326

280 

338 

407 

515 

621

614 

666 

515 

395 

S71

227 

218 

209 

146 

122

91 

62

67 

92 

152

82 

52 

48

44 

38 

34

Maximum

178 

62 

262

5,270

1,710 

551 

4,420 

858 

66S 

34 

469 

507 

1,540

4,420

June

32 

29 

28 

26 

26

34 

24 

17 

15 

14

13 

11 

11 

18 

26

28 

10 

5 

3 

1

1 

1 

1

1 

1

.8 

.8

.9

4

1

July

3 

1 

.9 

.8 

1

3 

4 

4 

1

1

20 

12 

S 

5 

4

12 

52 

137 

158 

73

28 

18 

18 

191 

235

469 

103 

44 

25 

alO 

a5

Minimum

8 

9 

14

0

25 

22 

32 

158 

34 

.8 

.8 

2 

3

.3

Aug.

a4

a2

B.2

21 

9

5 

10 

195 

392 

507

196 

126 

43 

40 

337

115 

194 

73 

36 

21

30 

29 

17 

24 

14

8 

7 

6 

5 

5 

12

Mean

37.2 

20.5 

52.1

7J. .3

170 

119 

610 

364 

252 

12.4 

59.1 

80.3 135

159

Sept.

9

7 

5 

4 

4

6 

5 

3 

4 

3

3 

3 

10 

12 

79

16 

22 

76 

29 

19

11

7 

6 

5 

aS

a5 

aS 

n,630 

t 1,640 

516

Run-off in 

acre-feet

2,290 

1,220 

3,210

51,790

10,430 

6,600 

37,520 

21,650 

15,520 

761 

3,270 

4,940 

8,030

118,400

Peak discharge.- Jan. 12 (IrSO a.m.) 3,090 sec.-ft.; Mar. 15 (4}30 a.m.) 6,050 sec.-ft.; Aug. 9 

(1a.m.) 1,170 sec.-ft.; Sept. 28 (11 p.m.) 4,690 sec.-ft.

a No gage-height record; discharge computed on basis of records for Little Colorado River near 

Hunt and Silver Creek near Woodruff.

f Fragmentary gage-height record; discharge computed on basis of available gage-height record 

and records for Little Colorado River near Hunt and Silver Creek near Woodruff.
218 LITTLE COLORADO RIVER BASIN

Little Colorado River at Grand Falls, Arlz.

Location.- Water-stage recorder, lat. 35°26', long. 111°12', In T. 24 N., R. 11 E., 

unsurveyed, at Grand Falls on Navajo Indian Reservation, 38 miles northeast of 

Flagstaff and 96 miles upstream from mouth. Altitude'of gage, 4,440 feet (riverprofile map).

Drainage area.- 21,200 square miles.

Records available.- November 1925 to September 1941.

Average discharge.- 16 years, 335 second-feet.

Extremes.- Maximum discharge during year, 17,000 second-feet Mar. 15 (gage height, 18.30 

feet); no flow on many days.

1926-41: Maximum discharge, 50,500 second-feet Apr. 5, 1929 (gage height, 30.0 

feet); no flow during some periods In each year.

A discharge of about 120,000 second-feet occurred Sept. 19, 1923 (gage height, 

47.0 feet, from floodmarks).

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

fair. Diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September

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 

2S 

29 

SO 

31

Oct.

2,720 

1,110 

368 

252 

260

1,800 

1,220 

793 

320 

a!60

141 

97 

78 

60 

46

36

27 

21 

17 

11

9 

5

2

1 

0

0 

0 

40 

566 

410 

345

Nov.

285 

189 

182 

149 

141

126 

109 

S7 

65 

48

46 

40 

29 

25 

20

12 

9 

7 

6 

5

6 

362 

607 

477 

300

271 

230 

190 

170 

143

Dec.

124 

109 

9S 

97 

95

111 

122 

116 

113 

105

118 

113 

123 

1,080 

745

500 

406 

281 

232 

584

1,060 

a5SO 

a410 

a340 

a380

2,320 

aSOO 

a 680 

602 

500 

1,590

Jan.

2.S20 

2,710 

1,190 

610 

500

320 

231 

239 

198 

17S

503 

3,700 

2,570 

1,440 

1,060

685 

555 

448 

384 

320

300 

260 

220 

181 

178

390 

413 

289 

219 

193 

284

Feb.

222 

207 

ISO 

166 

159

136 

130 

136 

1,190 

a780

a430 

a340 

a425 

1,410 

1,200

962 

1,480 

3,196 

2,750 

2,200

1,970 

3,510 

4,360 

3,190 

2,440

1,920 

1,410 

1,270

Month

Oot 

Non 

Dec

C

Jan 

Pet 

Mar 

Apr 

May 

Jut) 

Jul 

Aug 

Sep

1

alendar year 1940... ...................

ater year 1940-4

Mar.

al,000 

aSOO 

a700 

1,720 

1,720

1,160 

aS50 

a630 

a 580 

565

434 

402 

429 

448 

10,900

11,800 

5,800 

3,780 

2,750 

2,340

2,206 

2,100 

2,150 

2,200 

1,880

2,300 

1,S40 

1,520 

1,200 

1,300 

1,410

Apr.

1,440 

1,300 

2,200 

2,100 

2,240

2,200 

2,150 

1,800 

1,520 

1,370

1,270 

1,440 

1,410 

1,800 

1,840

2,420 

2,640 

2,490 

2,140 

1,680

1,340 

al,060 

a900 

aSOO 

a750

a775 

2,050 

3,810 

2,590 

2,240

Secondroot-days

10,915 

4,336 

14,504

96,325

28,583 

37,763 

68,908 

54,265 

43.546 

1,999 

1,926 

13,500 

15,634

295,379

May

2,060 

1,920 

1,920 

2,790 

3,080

3,420 

2,750 

2,390 

2,290 

2,200

2,060 

1,840 

1,680 

.1,500 

al,2BO

al,050 

a850 

a625 

475 

402

345 

289 

201 

154 

2,330

1,430 

775 

a600 

a410 

a260 

a200

Maximum

2,720 

607 

2,320

4,540

8,700 

4,360 

11,800 

3,810 

3,420 

340 

338 

3,240 

6.S20

11,800

June

a340 

a260 

al60 

al30 

al50

aSOO 

a200 

a!50 

116 

81

51 

29 

17 

9 

4

2 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

O 

0 

0 ( °

0 

0 

0 

0 

0

0 

0 

0 

0 

0

204 

164 

92 

75 

210

300

338 

321 

122 

72 

38

Minimum

0 

5 

95

0

178 

130 

408 

75O 

164 

0 

0 

0 

0

0

Aug.

20 

9 

3

1 

0

0 

0 

0 

302 

1,330

3,840 

1,070 

a430 

a260 

640

2,730 

1,S10 

1,160 

484 

177

116 

77 

48 

23 

7

2 

1 

1 

1 

72 

86

Mean

352

145 

468

263

922 

1,349 

2,223 

1,809 

1,405 

66.6 

62.1 

436 

521

811

Sept.

46 

13 

4

1 

0

0 

0 

0 

0 

0

0 

0 

5 

5

39B

791 

453 

871 

630 

508

233 

149 

S9 

50 

23

10 

48 

57 

4,530 

6,820

Run-off In 

acre-feet

21,650 

8,600 

28,770

191,100

56,690 

74,900 

136,700 

107,600 

86,370 

3,960 

3,820 

26,780 

31,010

686,800

a Ho gage-height record; discharge computed on basis of partial record, weather records, and 

records for nearty stations.
LITTLE COLORADO RIVER BASIN 219

Silver Creek near Woodruff, Arlz.

Location.- Water-stage recorder, lat. 34°44', long. 110°02', in sec. 32, T. 16 H., R. 

22 E., half a mile upstream from mouth and 3 miles south of Woodruff, control for 

station is crest of diversion dam 1,700 feet downstream.

Drainage area.- 942 square miles.

Average discharge.- 10 years (1929-33, 1935-41), 31.3 second-feet.

Records available.- April 1929 to October 1933, October 1935 to September 1941.

Extremes.- Maximum discharge during year, 3,700 second-feet Mar. 15 (gage height, 7.61 

feet); no flow May 14, 15.

1929-41: Maximum discharge, 12,100 second-feet July 21, 1929 (gage height, 11.67 

feet), from rating curve in effect at time extended above 3,000 second-feet on basis 

of records for Little Colorado River near Woodruff; maximum gage height, 12.37 feet 

July 26, 1940; no flow during several days in spring and summer of each year.

Remarks.- Records good except those July 17 to Sept. 30, which are poor. Diversions 

above station for irrigation, Flow regulated by several reservoirs (combined 

capacity, about 27,000 acre-feet). Records show discharge over tfam and do not include 

flow in canal that diverts at dam. See table of miscellaneous discharge measurements 

for flow in canal.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

30 

18 

13 

10 

45

26 

18 

8 

7 

7

13 

10 

8 

6 

5

5 

5 

5 

5

4

4 

4 

3 

5 

3

4 

50 

77 

23 

16 

16

HOT.

16 

8 

6 

6 

5

6 

7 

5 

 6 

6

5 

4 

5

4 

6

6 

8 

10 

7 

8

7 

4 

5 

5 

5

4 

4 

4 

3 

5

Dec.

3 

3 

3 

3 

3

3 

3 

3 

3 

3

4 

4 

5 

b4 

b21

16 

7 

58 

92 

48

25 

18 

10 

7 

64

186 

72 

42 

40 

52 

91

Jan.

139 

77 

50 

38 

23

18 

14 

8 

8 

8

228

779 

123 

72 

50

40 

40 

30 

19 

14

13 

10 

8 

8 

8

7 

7 

11 

23 

33 

35

Feb.

33 

23

16 

11 

10

e

8 

79 

68 

59

70 

118 

90 

52 

32

2S 

56 

72 

80 

61

184 

166 

118 

97 

77

63 

54 

42

Month

Oct

Hoi 

Dec

C

Jar 

Fet 

Mar

Apr 

Mas 

Jur 

Jul 

Aug 

Sej

H

alendar year 19'10. .....................

UBt.............................. ......

ater year 1940-4

Peak discharge. -

(5:36 a.m.) 610 see 

b Stage-dlachargc

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

Mar.

30 

16 

163 

7S 

42

26 

51 

42 

25 

13

8 

8 

31 

1,380 

2,440

1,220 

711 

511 

358 

250

152 

118 

107 

82 

35

26 

26 

23 

60 

78 

38

Apr.

3S 

42 

123 

107 

77

66 

56 

48 

40 

30

26 

25 

10 

214 

411

246 

155 

77 

30 

81

IS 

10 

6 

3 

3

5 

5

10 

10 

11

Secondfoot -days

451 

176 

896

9,006

1,941 

1,775 

6,150 

1,921 

S3 

91 

424 

831 

1,039

17,778

May

S 

6 

7 

10 

6

4 

2

1 

1 

4

2

1 

1 

0 

0

1 

1 

1 

1 

2

2 

5 

3 

4 

3

2

1 

1 

1 

1 

1

Maximum

77 

16 

186

2,750

779 

184 

2,440 

411 

10 

19 

121 

220 

440

2,440

June1 

1 

2

1 

1

10 

6 

4 

4 

3

2

3 

3 

2 

19

8 

3 

2

1 

1

1 

2

1 

2

1

1 

1 

1 

2 

2

July

2

1 

1 

1 

2

3 

2 

2 

2 

2

11 

4 

4 

3 

2

S 

49 

SI 

121 

30

14 

10 

8 

19 

11

13 

7 

4 

3 

2 

2

Aug.

1 

1 

1 

13

1

1 

4 

64 

96 

220

25 

8 

4 

56 

195

2S 

16 

8 

6 

5

22 

14 

8 

10 

5

3 

5 

3 

2 

2 

6

Sept.

4 

5 

3 

2 

2

2 

2 

3 

5 

6

5 

5 

5 

31 

39

13 

13 

23 

16 

13

8 

6 

6 

6 

7

10 

10 

440 

293 

58

Minimum Mean ^-feet"

3 14.5 895 

3 5.9 349 

3 28.9 1,780

0 24.6 17,S6O

7 62.6 3,850 

8 63.4 3,520 

8 263 16,170 

3 64.0 3,810 

0 2.7 165 

1 3.0 180 

1 13.7 841 

1 26.8 1,650 

2 34.6 2,060

0 48.7 35,270

Jan. 12 (3:15 a.m.) 1,480 sec. -ft.; Mar. 15 (5:30 a.m.) 3,700 sec. -ft.; Apr. 15 

..-ft.; Sept. 28 (8 p.m.) 1,640 see. -ft. 

> relation affected by ice.

461676 O-42-15
220 LITTLE COLORADO RIVER BASIN 

puerco River at Gallup, N. Mex.

Location.- Water-stage recorder, lat. 35°32', long. 108°44', in SWiNWi sec. 15, T. 15

 N.,"H. 18 w., 1,500 feet upstream from Second Street bridge in Gallup. Datum of gage 

is 6,490.36 feet above mean sea level, datum of 1929.

Drainage area.- 558 square miles.

Records available.- May 1940 to September 1941.

Extremes.- Maximum discharge during year, 3,700 second-feet Sept. 28 (gage height, 7.65 

feet;, by slope-area method; no flow on many days.

1940-41: Maximum discharge, that of Sept. 28, 1941; no flow on many days in each 

year.

Remarks.- Records poor except those for Mar. 1 to Apr. 23, which are good, and those

 for Sept. 22-30, which are fair. Small diversions above station for Irrigation.

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

4

0 

0 

0 

5

0 

0 

0

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

74 

26 

1 

0 

0

Nov.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

6 

10

1

2 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0

0

1

0

11

0

0 

2 

6 

16 

3

1 

1 

0 

0

11 

11

7 

6 

S 

12 

23

Jan.

14 

9 

5 

2 

1

0 

0 

0 

0 

0

2

10 

24 

1 

1

2

1 

1 

1 

0

0

1

1

3 

6

6 

11 

16 

12 

8 

4

Feb.

2

1 

0 

0 

0

0

1

2 

3 

1

1 

3

12 

11

15

23 

37 

40 

36 

33

36ai

23 

26 

27

22 

16 

17

Month

Got 

MOM 

Dec

C

Jan 

Pet 

Mar 

Apr 

Mas 

Jur 

Jul 

Au( 

Sej

VI

alendar year

ater year 1940-4

Mar.

20 

17 

17 

17 

17

17 

13 

8 

10 

6

11 

13 

22 

129 

151

57 

44

61 

80 

82

64 

51 

43 

74 

48

60 

39 

46 

67 

36 

98

Apr.

13S 

72 

82 

66 

80

62 

59 

62 

72 

101

70 

54 

53 

65 

60

63 

45 

30 

33 

38

35 

41 

46 

40 

40

50 

60 

65 

65 

46

Seoondfoot-daya

110 

19 

110

»

142 

424 

1,463 

1,783 

61S 

23 

406 

383 

1,808

7,283

May

45 

49 

58 

60 

40

30 

30 

20 

20 

20

10 

10 

10 

5 

5

6 

5 

5 

0 

0

0 

3 

11 

53 

112

16 

5 

1 

0 

0 

0

Maximum

74 

10 

23

.

24

40 

151 

133 

112 

8 

265 

156 

801

eoi

June

0 

0 

0 

0

S

2 

S 

4 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

1

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

7 

0

0 

0

0 

0

0

0 

95 

20 

3 0'

0 

0 

12 

263 

6

1 

0 

0 

0 

0 

0

Minimum

0 

0 

0

-

0 

0 

6 

30 

0 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

45 

127 

11 

35 

155

5 

0 

4 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

3.5 

.6 

3.6

.

4.6 

15.1 

47.2 

59.4 

19.9 

.3 

13.1 

12.4 

60.1

20.0

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

32 

90 

26

4 

169 

98 

11

3

4 

267 

40 

1 

0

0 

0 

801 

226 

10

Run- off in 

aore-feet

213 

38 

218

_

282 

841 

2,900 

3.540 

1,230 

46 

S05 

760 

3,570

14,450
LITTLE COLORADO RIVER BASIN 221

Puerco River near Adamana, Ariz.

Location.- Vlater-stage recorder, lat. 34°59', long. 109°48', in sec. 9, T. 18 N., 

 RT~ET~E., at highway bridge in Petrified Forest National Monument, three-quarters

of a mile downstream from Dead River and It miles southeast of Adamana. Datum of

gage is 5,312.79 feet above mean sea level, datum of 1929.

Drainage area.- 2,760 square miles.

Records available.- March 1940 to September 1941 '.

Extremes.- Maximum discharge during year, 22,600 second-feet Sept. 29 (gage height, 9.5 

reet); no flow during part of year.

1940-41: Maximum discharge, that of Sept. 29, 1941; no flow parts of each year.

Remarks.- Records poor. Minor diversions, mostly by pumping, above station.

Discharge, In second-feet, water year October 1940 to Septeniber 1941

Day

1 

2 

3 

4 

5

6 

7 

B 

9 

10

11 

12 

13 

14 

15

16

17 

18 

19 

20

21 

22 

23 

24 

25

86 

27 

28 

29 

30 

31

Get.

520 

144 

30 

5S 

200

32 

20 

10 

5 

1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

100 

190 

130 

40 

__ 10

Nov.

3 

2 

2 

2 

1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

106 

40

40 

20 

10 

5 

5

4 

4 

3 

3 

2

Dee.

1 

1 

1 

0 

0

0 

0 

0 

0

5

60 

100 

140 

40 

SO

20 

10 

30 

5 

30

20 

10 

10 

80 

50

30 

20 

10 

10 

160 

200

Jan.

100 

50 

30 

20 

10

5 

2 

2 

25 

40

1,700 

100 

80 

SO 

30

30 

20 

20 

50 

20

10 

10 

10 

30 

50

30 

30 

20 

20 

20 

10

Feb.

10 

10 

10 

5 

5

5, 

60 

110 

40 

20

20 

15 

40 

20 

60

260 

726 

255 

488 

520

720 

1,130 

990 

1,110 

600

550 

280 

180

Month

Oct

NOT 

Dec

C

Jat 

Fel 

Mai 

Apl 

Ma3 

Jur 

Ju] 

Au| 

Se 5

»

alendar year

 11. ....................................

y.. ....................................

rater year 1940-'

Mar.

60 

110 

90 

50 

50

50 

60 

50 

50 

40

40 

30 

20 

2,190 

3,780

1,650 

815 

690 

507 

160

256 

785 

536 

277 

375

427 

176 

120 

32 

78 

102

Apr.

192 

192 

310 

90 

44

84 

106 

20 

36 

32

114 

16S 

168 

96 

52

96 

114 

90 

114 

150

114 

96 

136 

150 

160

205 

312 

401 

255 

160

Secondfoot-days

1.490 

251 

1,073

-

2,624 

S,239 

13,676 

4,259 

13.280 

1,189

6,717 is.Wi.

67,357

May

144 

470 

250 

340 

490

400 

380 

200 

200 

160

150 

100 

100 

100 

100

100 

50 

50 

50 

50

40 

36 

460 

4,940 

1,230

1,010 

690 

350 

160 

120 

310

Maximum

520 

105 

200

-

1,700 

1,130 

3,780 

401 

4,940 

294 

430 

1,S50 

3,060

8,060

June

200 

120 

90 

110 

294

100 

70 

50 

40 

30

20 

20 

10 

10 

10

5 

5 

0 

0 

0

0 

0 

0 

5 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

5

10 

40 

430 

90 

280

50 

20 

S 

140 

430

40 

10 

5 

0 

0 

0

Minimum

0

0 

0

-

2

5 

20 

20 

36 

0 

0 

0 

0

0

Aug.

0 

0 

20 

5 

0

0 

890 

310 

720 

1,850

534 

136 

154 

267 

443

437 

1,060 

375 

60 

5

44 

2 

0 

0 

0

0 

0 

0 

0 

5 

0

Mean

48.1 

8.4 

34.6

-

S4.6 

294 

441 

142 

428 

39.6 

50.3 

217 

433

185

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

 -0

0 

0 

0 

300 

750

70 

15 

647 

314 

20

20 

10 

153 

112 

30

20 

10 

1,580 

8,060 

890

Run-off In 

acre-feet

2,960 

49S 

2,130

-

5,200 

16,340 

27,130 

8,450 

26,340 

2,360 

3,090 

13,320 

25,790

133,600

Peafc discharge.- Bar. 3 

(7 a.m.) 82,600 sec.-ft«

.) 7,400 sec.-ft.i Hay 24 (3 a.m.) 11,400 see.-ft.; Sept. 29
222 LITTLE COLORADO RIVER BASIN

Chevelon Fork near Winslow, Ariz.

Location.- Water-stage recorder, lat. 34°56', long. 110°31', in sec. 27, T. 18 N., R. 

17 E., 3 miles upstream from mouth and 12 miles southeast of Winslow.

Drainage area.- 1,010 square miles.

Records available.- December 1905 to December 1908, December 1915 to December 1919, 

March 1929 to February 1934, September 1935 to June 1941 (discontinued).

Extremes.- Maximum discharge during period, October 1940 to June 1941, 1,630 secondfeet Mar. 15 (gage height, 7.52 feet); minimum, 2 second-feet on many days.

1929-41: Maximum discharge, 16,100 second-feet Apr. 4, 1929 (gage height, 17.8 

feet), from rating curve extended above 6,000 second-feet; minimum, about 1 secondfoot at times in each of several years.

Remarks,- Records good except those for periods of indefinite stage-discharge relatlonship, which are poor. No diversions above station.

Discharge, In second-feet, water Tear October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

3 

3 

3 

4 

6

4 

3 

3 

3 

3

3 

4 

4 

3 

4

4 

4 

4 

4 

4

4 

4

4 

4

4 

e40 

elO 

6 

4 

4

HOT.

e30 

S3 

46 

e40 

e26

e20

e!6 

9 

7 

7

5 

5 

6

el 50 

162 

143 

107 

84

76 

67 

63 

58 

50

Dec.

46 

46 

68

79 

71

61 

64 

47 

44 

39

66 

66 

288 

208 

160

137 

101 

91 

e350 

e360

e240 

e!70 

e!30 

ellO 

elOO

ellO 

e220 

e!90 

elSO 

146 

137

Jan.

128 

113 

101 

92

36

71 

79 

67 

64 

49

1S1 

69 

254 

247 

196

166 

122

9S 

34 

76

75 

71 

61 

67 

61

49 

46 

44 

48 

58 

60

Feb.

60 

6S 

65 

48 

44

49 

63 

66 

108 

113

116 

198 

341 

272 

213

306 

S99 

648 

660 

408

563 

1,030 

684 

450 

344

267 

225 

196

Month

Oct 

HOT 

Dec

e

Jar 

Pel 

Hax

Apr 

Ifaj

Jur 

Jul 

Aug 

Set

5

alendar year 19410. .....................

[he perlt

Mar.

21S 

348 

506 

366 

265

211 

183 

144 

127 

116

139 

144 

134 

931 

1,320

668 

511 

373 

420 

540

503 

398 

267 

287 

366

266 

206 

208 

292 

419 

480

Apr.

537 

600 

366 

262 

254

426 

41S 

347 

324 

344

404 

336 

332 

330 

232

237 

458 

511 

396 

229

177 

135 

130 

154 

273

654

731 

584

177 

474

Secondfoot -days

169 

1,269 

4,063

13,716

2,931 

3,381 

11,534 

10,730 

6,534 

81

-

Hay

472 

490 

367 

1,030 

943

644 

531 

420 

349 

288

230 

168 

12S 

96

7S

59 

46 

33 

29 

24

20 

17 

14 

11 

10

8 

7 

6 

6 

6 

6

Maximum

40 

162 

360

375

264 

1.030 

1,320 

731 

1,030 

6

-

June

6 

4 

4 

6 

4

4 

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

Minimum

3 

4 

39

3

44

44 

116 

130 

6 

2

-

Aug.

Mean

5.1 

42.0 

131

37.6

94.6 

299 

372 

358 

211 

2.7

-

Sept.

Run-off In 

acre-feet

316 

2,600 

S,060

27,200

5,S10 

16,620 

22,880 

21,280 

12,960 

161

90,690

Peak discharge.- Feb. 17 (1 a.m.) 1,090 sec.-ft.; Mar. 14 (4j30 p.m.) 1,600 sec.-ft.; Mar. 16 

(12t30 p.m.} 1,630 sec.-ft.; Hay 4 (7:30 p.m.) 1,530 sec.-ft. 

e Stage-discharge relation Indefinite.
LITTLE COLORADO RIVER BASIN 223

Clear Creek near Wlnslow, Aria.

cation.- Water-stage recorder, lat. 34°58', long. 110°38', In SEi sec. 9, T. 18 N., 

R. 16 E., li miles upstream from mouth and 5 miles southeast of Wlnslow. Control 

for station Is crest of diversion dam 1,000 feet downstream.

September 1941. June

Drainage area.- 607 square miles.

Records available.- March 1929 to February 1934, October 1935 

1906 to January 1909 at site 3 miles upstream.

Average discharge.- 10 years (1929-33, 1935-41), 98.7 second-feet.

Extremes.- Maximum discharge during year, 3,300 second-feet Mar. 15 (gage height, 7.73 

feet); no flow on many days.

1929-41: 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 on many days in each year.

Remarks.- Records good except those below 10 second-feet, which are poor. Water diverted 

above station for municipal and industrial supply. Records show discharge over dam 

and do not include flow In canal that diverts at dam or leakage through dam.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

0 

0 

0 

0 

0

12 

582 

276 

164 

107

68 

47 

34 

26 

20

15 

S 

5 

3 

2

1 

0 

1 

0 

0

0

1 1

0 

113 

158

SOT.

128 

102

SO 

57 

47

36 

30 

26 

22 

15

13 

10 

S 

7 

6

5 

4 

4 

5 

3

274 

276 

196 

151 

123

107 

83 

80 

65 

57

Dec.

50 

50 

54 

57 

68

68 

68 

68 

68 

65

65 

61 

473 

414 

308

21S 

138 

158 

312 

440

323

247 

190 

170 

144

151 

214 

225 

218 

203 

196

Jan.

196 

190 

164 

144 

133

112

113 

97 

87 

S3

92 

107 

243 

339 

£S4

247 

190 

126 

US 

112

133 

133 

112 

112 

92

S3 

S3 

80 

76 

S3 

83

Feb.

83 

SO 

72 

65 

54

57 

76 

76 

123 

133

138 

203 

438 

449 

355

355

1,090 

962 

830 

665

846 

1,650 

1,240 

962 

725

568 

476 

39S

Month

Oet 

Noi 

Dec

C

Jar 

Pel 

Hai 

Api 

Ha] 

Jut 

Ju] 

Auj 

Sej

1

alendar year 194 0................ ......

fater year 1940-4

Mar.

389 

476 

924 

715 

5S8

467 

389 

323 

276 

247

2S4 

261 

247 

1,120 

2,980

1,640 

995 

785 

685 

695

715 

655 

512 

458 

512

512 

423 

380 

406 

512 

596

Apr.

705 

940 

725 

578 

530

635 

625 

578 

558 

587

675 

635 

940 

788 

596

606 

S30 

962 

788 

558

585 

398 

355 

347 

423

763 

1,420 

1,380 

1,100 

1,090

Secondfoot-days

1,644 

2,020 

5,484

20,133

4,254 

13,169 

19,987 

21,700 

19,754 

93 

0 

0 

8

68,113

May

1,070 

9S4 

1,230 

1,380 

1,580

1,510 

1,500 

1,360 

1,230 

1,150

1,040 

918 

S09 

715 

616

512 

398 

308 

254 

225

190 

138 

US 

102 

92

SO 

68 

57 

47 

39 

34

Maximum

582 

276 

473

562

339 

1,650 

2,920 

1,420 

1,580 

26 

0 

0 

4

2,920

June

26 

20 

16 

12

9

6 

2

1 

0 

0

1 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

Minimum

0 

3 

50

0

76 

54 

247 

347 

34 

0 

0 

0 

0

0

Aug.

Mean

53.0 

67.3 

177

55.0

137 

470 

645 

723 

637 

3.1 

0 

0 

.3

241

Sept.

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

1

4 

3

Run- off In 

acre-feet

3,260 

4,010 

10.SSO

39,930

8,440 

26,120 

39,640 

43,040 

39, ISO 

1S4 

0 

0 

16

174,800

Peak discharge.- Feb. 17 (9 a.m.) 1,380 sec. -ft.; Feb. 22 (7 a.m.) l.SOO sec. -ft.; Mar. 15

(11:30 a.m.) 37300 sec.-ft.; Apr. 27 (9 p.m.) 1,900 sec.-ft
224 LITTLE COLORADO RIVER BASIN 

Salt creek near Winslow, Ariz.

Location.- Staff gage, lat. 34°59', long. 110°39', In SWiSEi sec. 4, T. 18 N., R. 16 E., 

half a mile downstream from county highway bridge, 1 mile upstream from mouth, and 4 

miles southeast of Winslow.

Drainage area.- 287 square miles.

Records available.- October 1939 to June 1941 (discontinued).

Ex ies.- Maximum discharge during period October 1940 to June 1941, 778 second-feet Apr. 

16 Tgage height, 5.3 feet, from floodmarks); no flow during long periods.

1939-41: Maximum discharge, 2,900 second-feet Aug. 14 or 15 (gage height, 7.6 feet, 

from floodmarlcs), by computation of flow over dam; no flow during long periods.

Remarks.- Records fair. Gage read twice dally or oftener. Snail diversions above station 

for Irrigat ion.

Cooperation.- Gage-height record collected in cooperation with the Arizona Game and Fish 

Commission.

Discharge, In second-feet, water year October 1940 to September 1941

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 

SI

Oot.

3 

2 

.2 

.1 

.2

.3 

2 

,2 

2 

4

Z 

.1 

.1 

.1 

.1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

,4 

6 

34 

10 

3 

1

Nov.

0.6 

.2 

.1 

.1 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

.1 

.2 

,S 

0 

0

0 

0 

6 

76 

35

32 

23 

10 

6 

3

83 

91 

90 

45 

37 

29

Jan.

32 

56 

36 

27 

IS

8 

4 

3 

2 

1

1

.£ 

.3 

.1 

.1

11 

10 

6

4 

2

1 

.6

0* 

.1

.1 

.1 

.1 

0 

0 

0

Feb.

0 

0 

0 

0 

0

0

.1

0 

0 

0

0 

0 

227 

156 

91

163 

249 

180 

156 

128

265 

406 

240 

145 

68

45 

42

27

Month

Oot 

No\ 

Dec

C

Jar 

Fel 

Mat 

Apr 

toj 

Jur 

Jul 

Aug 

Sej

uary

11.....................................

The peri od .............................

Mar.

11 

10 

49 

66 

18

18 

14 

IS 

19 

13

4 

2 

1 

1 

292

387 

180 

116 

71 

37

22 

13

e

4 

2

2 

.9 

.£

.1 

.1 

.]

Apr.

0.1 

.1 

.1 

28 

74

116 

71 

33 

17 

10

5 

4 

Z 

124 

406

534 

313

146 

82 

51

20 

11 

5 

3

^

2 

7 

33 

32 

24

Secondfoot -days

70.S 

1 

566.5

2,175.3

224.3 

2,597.1 

1,373.4 

2,154.3 

150 

0

-

toy

22 

24 

21 

48 

24

6

4 

0 

1 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

34

.6 

91

450

66

406 

387 

534 

48 

0

-

June July

Minimum

0 

0 

0

0

0 

0 

.1 

.1 

0 

0

-

Aug.

Mean

2.28 

0.03 

18,3

5.94

7.24 

92.8 

44,3 

71.8 

4.8 

0

~

Sept.

Run-off In 

acre-feet

140 

2 

1,120

4,310

445 

5,150 

2,720 

4,270 

298 

0

14,140
LITTLE COLORADO RIVER BASIN 225

Moenkopl Wash near Tuba, Arlz.

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 4 miles southwest of Tuba. 

Datum of gage is 4,310.96 feet above mean sea level (Arizona Highway Department 

bench mark). Prior to June 23, water-stage recorder at site 8 miles upstream.

Drainage area.- 2,490 square miles.

Records available.- July 1926 to September 1941.

Average discharge.- 15 years, 23.7 second-feet.

Extremes.- Maximum discharge during year, 5,240 second-feet Aug. 16 (gage height, 6.77

 feet), from rating curve extended above 1,000 second-feet on basis or slope-area 

determination at gage height, 8.0 feet; no flow on many days.

1926-41: Maximum discharge, 15,100 second-feet Aug. 4, 1929, by slope-area 

method; no flow on several days In each year.

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

 SOCTsecond-feet, which are poor. Diversions above station for Irrigation; none 

below.

Discharge, in aecond-feet, water year October 1940 to September 1941

Day

1 

8 

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 

26 

29 

30 

31

oct.

388 

0 

0 

0 

1,340

416 

73 

S3 

11 

6.4

5.8 

4.S 

5.3 

4.3 

4.3

4.3 

3.S 

3.S 

3.3 

3.S

3.8 

3.8 

3.S 

3.S 

3.6

4.3 

174 

45 

13 

7.9 

5.3

NOT.

4.B 

4.3 

4.3 

4.3 

3.S

4.3 

4.3 

4.3 

3.S 

3.S

3.8 

3.4 

4.3 

3.S 

3.4

7.6 

4.3 

5.S 

13 

12

5.8 

4.S 

5.3 

7.1 

4.3

4.3 

5.3 

5.3 

3.8 

3.S

Dec.

4.3 

3.S 

3.8 

3.8 

3.8

3.8 

3.8 

4.3 

4.3 

4.3

5.3 

10 

11 

11 

7

5.5 

3.S 

8.S 

16 

13

10 

S.7 

7.9 

23 

68

22 

17 

9.5 

8.7 

9.5 

19

Jan.

20 

13 

b9 

b7 

7.1

b8 

6.4 

b7 

b6 

6.4

10 

13 

14 

10 

9.5

7.1 

b6 

b5 

b5 

7.1

b6 

5.8 

7.1 

8.7 

12

10 

S.7 

10 

23 

IS 

12

Feb.

S.7 

6.4 

5.3 

5 

5

5 

10 

30 

24 

10

7 

10 

30 

18 

10

9 

9 

9 

9 

10

10 

10 

100 

40 

30

20 

10 

8

Month

Oct 

NOT 

Dec

C

Jar 

Pel 

Mat 

API 

Ma. 

Jur 

Ju3 

Aug 

Se;

t

(6

alendar year 1940 ......................

fater year 1940-4

Peak discharge -

:45 p.m.) 2,220

liar.

7 

8 

9 

10 

10

10 

9 

S 

7 

6

5 

5 

5 

10 

15

10 

8 

5 

4 

3

3 

3 

3 

4 

20

10 

10 

S 

5 

3 

2

Apr.

Second* 

foct-daya

2,569.9 

153.2 

334.7

14,643.3

297.9 

458.4 

225 

432 

10. S 

0 

117 

2,436 

3,632

10,666.9

2 

10 

S 

5 

4

3 

3 

3 

3 

2

2 

50 

SO 

15 

10

S 

5 

S 

3 

3

3 

60 

40 

30 

20

50 

30 

20 

10 

5

Bay

1 

1 

1 

1 

1

1 

.5 

.5 

.5 

.5

.5 

.4 

.4 

.3 

.3

.2 

.2 

.2 

.1 

.1

.1 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

1,340 

13 

68

2,590

23 

100 

20 

60 

1 

0 

25 

1,210 

SOI

1,340

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

7 

20 

15

S 

6 

4 

5 

5

9 

25

9 

3 

1 

0

Minimum

0 

3.4 

3.6

0

5 

5 

2 

2 

0 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

7 

60 

SO

50 

40 

25 

15 

27S

1,810 

324 

60 

14 

9

3

1 

1 

0 

0

0

1 1

77 

140 

50

Mean

S2.9 

5.11 

10.8

40.0

9.61 

16.4 

7.3 

14.4 

.35 

0 

3.3 

78.6 

121

29.2

Sept.

13 

6 

4 

2 

2

1 

0 

0 

0 

0

0

1

683 

SOI 

455

95 

20

688 

376 

38

9 

9 

36 

16 

8

6 

4 

S 

218 

199

Run-off in 

acre-feet

5,100 

304 

664

29,050

591 

909 

446 

357 

21 

0 

232 

4.S30 

7,200

21,150

Oct. 5 (12:45 p.m.) 4,820 aec.-ft.; Aug. 16 (6:50 a.m.) 5,240 aec.-ft.; Sept. 1, 

sec. -ft.; Sept. 18 (6:50 a.m.) 4,420 aee.-ft.

b Stage-discharge relation affected by ice.

Note.- No gage-height record Feb. 5, 6, 11, 12, and Feb. 16 to June 27; diacharge computed on 

basis of 10 dlaeharge measurementa, 6 diacharge eatimatea, weather recorda, local information, 

records on other atreama, and engineers' observations.
226 BRIGHT ANGEL CREEK BASIN

Bright Angel Creek near Grand Canyon, Aria.

Location.- Staff gage, lat. 36°06'09", long. 112°05'49", 0.5 nile upstream from mouth and 

11 miles by trail from Grand Canyon Village, Coconino County. Datum of gage is 

2,481.6 feet above mean sea level (preliminary datum of 1929). Prior to Aug. 30 staff 

gages 600 feet upstream and 2,100 feet downstream.

Drainage area.- 100 square miles.

Records available.- October 1923 to September 1941.

Average discharge.- 18 years, 41.1 second-feet.

Extremes.- Maximum discharge observed during year, 848 second-feet May 13; minimum 

observed, 23 second-feet several days in October.

1923-41: Maximum discharge, 4.400 second-feet Aug. 19, 1936, by slope-area method; 

minimum, 9 second-feet (regulated) June 29, 1934.

Remarks.- Records good except those Apr. 26 to May 13, which are fair. Gage read twice 

daily or oftener. Small diversions above station for irrigation. Some fluctuation in 

flow,caused by power plant 9 miles above station; no regulation by storage.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

24 

24 

24 

S3

25

24 

25 

24 

24

25 

23 

23 

24 

24

23 

23 

23 

23 

23

23 

23 

23 

23 

23

26 

24 

24 

24 

24 

24

HOT.

24 

24 

24 

24 

24

24 

24 

24 

24 

24

24 

24 

24 

24 

24

21 

24 

28 

3C 

2V

25 

26 

25 

2E 

2E

2E 

24 

24 

S4 

24

Dec.

24 

25 

24 

25 

25

25 

25 

25 

25 

25

25 

25 

25 

25 

25

25 

26 

26 

26 

26

26 

26 

2V 

76 

48

32 

33 

32 

3£ 

36 

40

Jan.

31 

29 

28

28 

32

30 

29 

29 

28 

28

28

29 

29 

29 

29

29 

28 

28 

2E 

28

28 

31 

29 

44 

46

34 

3£ 

33 

34 

3£ 

31

Feb.

31 

30 

SO 

29 

28

30 

44 

38 

36 

34

38 

50 

42 

37 

39

39 

36 

35 

5£ 

64

149 

84 

68 

78 

82

64 

58 

S3

Month

Oct 

Ho? 

Dec

C

Jan 

Pet 

liar 

Apr 

May 

Jun 

Jul 

Aug 

Sep

D

alendar year 19- ...... .................

ater year 1940-4 1...... ................

Mar.

74

80 

78 

64 

69

61 

58 

53 

52 

52

52 

50 

66 

90 

74

68 

64 

61 

61 

61

61 

58 

58 

64 

63

63 

61 

61 

63 

66 

66

Apr.

78 

84 

73 

69 

69

69 

71 

71 

76 

87

89 

89 

37 

80 

74

73 

76 

80 

78 

74

73 

84 

73 

71 

S2

105 

114 

133 

15S 

193

Secondroot-days

795 

740 

906

15,942

951 

1,424 

1,972 

2,633 

15,516 

3,926 

1,373 

1,280 

967

32,483

May

205 

230 

269 

346 

397

602 

602 

648 

602 

696

696 

696 

745 

784 

719

719 

657 

599 

545 

545

428 

366 

366 

386 

366

406 

406 

406 

366 

366 

312

M&xlmum

83

30 

76

230

46 

149 

90 

193

784 

280 

64 

53 

41

784

June

280 

235 

222 

222 

2O8

208 

196 

196 

1S3 

160

138 

132 

130 

132 

121

109 

105 

101 

101 

88

76 

74 

71 

68 

68

66 

64 

62 

56 

54

July

54

53 

53 

53 

52

52 

48 

48 

46 

44

43 

40 

40 

40 

40

40 

40 

40 

40 

40

38 

39 

39 

39 

54

48 

42 

42 

42 

42 

42

Minimum

23 

24 

24

18

28 

28 

50 

69 

205 

64 

38 

36 

27

23

Aug.

42 

39 

39

39 

39

40 

40 

63 

44 

42

42 

43 

43 

43 

42

42 

42 

43 

43 

40

42 

42 

44 

43 

42

40 

39 

3S 

37 

36 

37

Mean

25.6 

24.7 

29.2

43.6

30.7 

50.9 

63.6 

87.8 

501 

131 

44.3 

41.3 

32.2

89.0

Sept.

37 

37 

36 

36 

37

37 

36 

37 

37 

37

36 

36 

41 

35 

33

32 

31 

28 

27 

27

27 

27 

28 

27 

28

28 

27 

28 

28 

27

Run-off in 

acre-feet

1,580 1,470 ijsoo

31,680

1,890 

2,820 

3,910 

5,280 

30,780 

7,790 

2,720 

2,640 

1,920

64,440
VIRGIN RIVER BASIN 227

Virgin River at Virgin, Utah

Location.- Chain gage, lat. 37°13', long. 113°11', in SEjSEi sec. 22, T. 41 S., R. 12 

w., at east edge of Virgin, 0.5 mile downstream from North Creek.

Drainage area.- 934 square miles (revised).

Records 1941. available.- April 1909 to September 1926 (fragmentary), October 1926 to September 

Average discharge.- 22 years (1910-14, 1915-16, 1917-18, 1923-24, 1926-41), 224 secondreet.

Extremes.- Maximum discharge observed during year, 2,980 second-feet May 6 (gage height, 

7.80 reet), from rating curve extended above 1,500 second-feet on basis of slope-area 

determination at 13,500 second-feet; minimum observed, 65 second-feet Nov. 2.

1909-41: Maximum discharge, 13,500 second-feet Mar. 3, 1938 (gage height, 10.7 

feet, from floodmarks) by slope-area method; minimum discharge observed, 23 secondfeet Sept. 30, 1931. ,

Remarks.^- Records poor. Gage read once daily. Diversions above station for irrigation. 

Cooperation.- Results of 59 discharge measurements furnished by Bureau of Reclamation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

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 

SO 

31

Oct.

104 

98 

104 

98 

104

110 

101 

104 

96 

92

90 

79 

a82 

86 

79

86 

90 

85 

79 

86

86 

113 

107 

101 

96

201 

262 

146 

110 

96 

S6

Nov.

72 

66 

82 

113 

101

107 

113 

96 

101 

125

96 

119 

113 

122 

113

116 

119 

142 

168 

132

a!34 

136 

122 

125 

119

119 

113 

101 

101 

104

Dec.

a!07

no

122 

110 

136

160 

, 185 

176 

1S5 

189

189 

180 

1S9 

168 

153

146 

160 

189 

226 

197

ISO 

a208 

235 

240 

368

359 

185 

146 

a!74 

201 

197

Jan.

1S5 

160 

128 

122 

101

126 

116 

119 

104 

101

122 

a!32 

142 

150 

119

132 

153 

153 

a!48 

142

156 

153 

168 

197 

226

211 

164 

153 

180 

168 

136

Feb.

119 

110 

101 

101 

156

150 

240 

176 

160 

164

eEOO 

532 

e320 

246 

226

197 

206 

216 

240 

211

1,070 

366 

331 

610 

514

226 

1S6 

176

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Itai 

Api 

Kaj 

Jur 

Ju] 

Auf 

Sei

1

alendar year 19<10....... ...............

later year 1940-'

liar.

245 

958 

532 

380 

560

420 

352 

33S 

2S6 

23S

245 

280 

610 

1,090 

396

a374 

352 

359 

444 

452

352 

345 

373 

359 

345

346 

338 

317 

388 

366 

e500

Apr.

1,240 

560 

460 

444 

1,360

487 

404 

436 

460 

672

832 

590 

478 

496 

496

1,010 

478 

420 

380 

380

369 

352 

420 

373 

436

436 

738 

971 

1,400 

1,330

Secondfoot-days

3,249 

3,387 

5,790

63, 695

4,566 

7,548 

12,936 

18,898 

43,886 

10,154 

6,439 

4,304 

3,319

124, 476

Hay

1,300 

1,150 

1,460 

1,530 

1,330

2,340 

1,560 

1,560 

1,510 

1,350

1,870 

1,680 

1,600 

1,440 

2,060

1,540 

1,610 

1,670 

1,650 

1,260

958 

1,180 

1,430 

1,430 

1,460

1,490 

1,110 

958 

820 

808 

772

Maximum

262 

168 

388

1,500

226 

1,070 

1,090 

1,400 

2,340 

694 

1,510 

366 

180

2,340

June

532 

505 

650 

514 

506

487 

694 

630 

487 

487

396 

352 

359 

331 

310

304 

274 

262 

245 

211

211 

197 

180 

180 

172

160 

160 

160 

a!53 

146

July

132 

132 

132 

132 

132

132 

125 

119 

168 

216

146 

139 

156 

116 

107

116 

116 

206 

280 

148

136 

116 

110 

26S 

1,510

338 

310 

211 

168 

168 

160

Minimum

79 

65 

107

53

101 

101 

236 

352 

772 

146 

107 

74 

85

65

Aug.

al53 

146 

128 

125 

122

119 

146 

176 

298 

366

245 

230

146 

125 

104

139 

119 

116 

113 

119

98 

101 

98 

a!06 

113

98 

95 

104 

95 

74 

87

Mean

105 

US 

187

174

147 

270 

417 

630 

1,416 

338 

208 

139 

111

341

Sept.

90 

S7 

85 

87 

90

95 

101 

104 

104 

104

128 

125 

122 

180 

125

107 

92 

92 

95 

92

101 

139 

146 

136 

113

92 

104 

104 

119 

160

Run-off In 

acre-feet

6,440 

6,720 

11,480

126,300

9,060 

14,970 

25,660 

37,480 

87,050 

20,140 

12,770 

8,540 

6,580

246,900

a No gage-height record; discharge Interpolated.

e Gage reading not representative of average for day; discharge computed on basis of records for 

stations at Littlefleld, and North Fork of Virgin River near St>rlngdale.
228 VIRGIN RIVER BASIN

Virgin River at Llttlefleld, Ariz.

Location.- Staff gage, lat. 36°53', long. 113°56', in SWi sec. 4, T. 40 N., R. 15 W., 

 Half a mile downstream from Beaverdam Wash and half a mile east of Littlefield.

Drainage area.- 4,930 square miles (revised). 

Records available.- October 1929 to September 1941. 

Average discharge.- 12 years, 285 second-feet.

Extremes.- Maximum discharge observed during year, 6,000 second-feet Mar. 2 arid July 

£5 Igage height, 5.00 feet) from rating curve extended above 3,000 second-feet on 

basis of slope-area determination at 22,000 second-feet; minimum observed, 58 

second-feet July 8.

1929-41: Maximum discharge, 22,000 second-feet Mar. 3, 1938 (gage height, 10.3 

feet, datum then in use, from floodmark), by slope-area method; minimum discharge 

Observed, 23 second-feet Aug. 31, 1935.

Remarks.- Records poor. Gage read once daily. There is a diversion of few second-feet 

rrom Beaverdam Springs; no others in Arizona above station, but several canals divert 

in Utah. Mesquite canal diverts water a few miles below station for irrigation in 

Nevada.

Cooperation.- 8 discharge measurements furnished by U. S. Bureau of Reclamation.

Discharge, in seoond-feet, water year October 1940 to September 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22

as

24 

25

26 

27 

28 

29 

30 

31

Oct.

132 

93 

109 

109 

97

97 

104 

91 

89 

81

75 

83 

99 

85 

87

72 

79 

65 

61 

60

68 

68 

68 

68 

eiOO

840 

660 

330 

246 

208 

173

Nov.

167 

194 

190 

194 

190

190 

190 

180 

180 

164

167 

164 

164 

160 

148

145 

134 

145 

186 

254

186 

167 

167 

164 

164

160 

160 

154 

154 

160

Dec.

160 

157 

154 

157 

154

154 

154 

186 

160 

154

154 

157 

254 

142 

148

157 

300 

238 

197 

190

173 

148 

148 

215 

864

272 

230 

211 

250 

246 

272

Jan.

264 

173 

173 

148 

223

204 

208 

200 

208 

215

219 

223 

246 

254 

250

238 

223 

219 

227 

227

227 

238 

242 

2S6

544

282 

286 

250 

254 

300 

254

Feb.

234 

250 

242 

259 

234

234 

577 

e480 

277 

277

286 

960 

564 

295 

286

577 

506 

499 

335 

570

800 

960 

840 

646 

2,470

el, 100 

400

367

Month

Dot 

No\ 

Dec

C

Jan 

Pet 

Mar 

Apt 

Maj 

Jur 

Jul 

Aug 

Ser

1

alendar year 19< 10......................

ater year 1940-'

Mar.

el, 000 

4,740 

e2,700 

1,720 

2,270

1,720 

el, 000 

681 

751 

751

681 

436 

966 

2,510 

1,140

1,130 

653 

577 

551 

570

564 

436 

492 

525 

480

362 

325 

340 

330 

400 

6500

Apr.

2,300 

1,120 

1,030 

S40 

864

1,140 

832 

667 

716 

518

el, 500 

2,890 

el, 900 

1,410 

1,350

1,250 

1,070 

962 

962 

4SO

418 

448 

480 

418 

389

418 

1,270 

1,110 

1,300 

1,300

Seoondfoot-days

4,587 

5,142 

6,556

90,454

7,505 

15,525 

31, 301 

31,352 

65,790 

9,745 

11,114 

10,291 

2,748

201,656

May

1,860 

1,720 

1,860 

2,020 

2,020

3,800 

3,760 

3,060 

2.S50 

3,080

3,290 

4,210 

3,S20 

3,960 

3,580

1,970 

1,840 

1,860 

1,740 

1,270

1,280 

1,410 

1,310 

1,220 

1,230

1,250 

1,080 

1,000 

928 

824 

688

Maximum

840 

254 

864

4,600

544 

2,470 

4,740 

2,890 

4,210 

1,030 

4,100 

S,050 

160

4,740

June

688 

532 

512 

454 

460

406 

473 

1,030 

758 

492

412 

350 

350 

325 

259

259 

259 

227 

211 

194

180 

148 

106 

95 

87

95 

95 

102 

97 

89

July

85 

77 

73 

68 

63

61 

60 

58 

93 

83

72 

93 

95 

87 

75

72 

70 

75 

81 

180

111 

102 

81 

272 

4,100

2,300 

6700 

6600 

518 

394 

315

Minimum

60 

134 

142

53

148 

234 

325 

389 

688 

87 

58 

75 

70

58

Aug.

227 

157 

134 

129 

486

268 

277 

250 

61,000 

730

2,050 

el, 000 

250 

211 

160

960 

350 

234 

254 

234

116 

109 

97 

77 

75

75 

75 

77 

77 

77 

75

Mean

148 

171 

211

247

242 

554 

1,010 

1,045 

2,122 

325 

359 

332 

91.6

552

Sept.

75 

79 

73 

73 

73

70 

73 

77 

75 

70

75 

75 

75 

72 

104

93 

85 

77 

73 

73

79 

102 

140 

129 

123

121 

116 

106 

132 

160

Run-off In 

acre-feet

9,100 

10,200 

13,000

179,400

14,890 

30,790 

62,080 

62,190 

130,500 

19,330 

22,040 

20,410 

5,450

400,000

e Gage reading not representative of average for dayj discharge computed on basis of records for 

stations at Virgin, and North Pork of virgin River near Sprlngdale.
VIRGIN RIVER BASIN 

North Fork of Virgin River near Springdale, Utah

229

Location.- Staff gage, lat. 37°12'35", long. 112°58'40", in SWiNWi sec. 22, T. 41 S., R. 

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.

Drainage area.- 336 square miles (revised).

Records available.- October 1932 to September 1941. June to November 1923 and April 

I9iib to September 1932 at site a quarter of a mile upstream from Pine Creek.

Average discharge.- 15 years (1925-31, 1932-41), 106 second-feet.

Extremes.- Maximum discharge observed during year (including temporary storage released 

fromTand-slide 2 miles above gage), 3,100 second-feet May 14 (gage height, 7.68 feet, 

from floodmarks) from rating curve extended above 1,200 second-feet on basis of 

slope-area determination at 7,000 second-feet; -minimum discharge observed, 35 secondfeet Dec. 14, Jan. 17, 18.

1925-41: Maximum discharge, 7,000 second-feet Mar. 3, 1938 (gage height, 11.0 

feet, from floodnarks), by slope-area method; minimum discharge observed, 24 secondfeet Dec. 17 and 31, 1928.

Remarks.- Records fair. Gage read once daily. Records give the combined flow of the 

North Fork of Virgin River and Springdale canal, which diverts in NWiNWi sec. 22, 

T. 41 S., R. 10 W., for irrigation in vicinity of Springdale.

Discharge, In second-feet, water year October 1940 to September 1941

Bay

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.

51 

46 

56 

56 

45

46 

46 

46 

45 

45

45 

45 

45 

a44 

42

45 

44 

43 

41 

41

41 

41 

42 

45 

43

e!02 

119 

47 

45 

45 

55

Nov.

53 

51 

51 

51 

49

52 

52 

52 

52 

48

47 

45 

40 

44 

45

45 

45 

62 

57 

53

a49 

45 

43 

43 

a 46

49 

43 

45 

48 

54

Dec.

48 

48 

48 

48 

49

50 

50 

52 

46 

48

48 

45 

41 

35 

37

41 

52 

a51 

51 

51

51 

51 

SO 

92 

57

51 

57 

57 

57 

66 

68

Jan.

57 

55 

36 

36 

a45

55 

54 

54 

58 

54

52 

50 

54 

59 

46

50 

35 

35 

45 

52

53 

68 

66 

59 

59

59 

60 

60 

60 

57 

55

Feb.

55 

49 

49 

47 

48

50 

63 

61 

53 

61

e83 

223 

73 

73 

75

71 

73 

133 

117 

117

145 

78 

145 

181 

87

73 

72 

86

Month

Oc1 

HOT 

Dec

C

Jar

Fet 

Mat 

Api 

Ma3 

Jur 

Ju3 

Auj 

Sei

VI

alendar year 19 < o ......................

fater year 1940-4

Mar.

292 

361 

95 

103 

136

186 

186 

103 

a92 

81

31 

133 

219 

201 

196

111 

92 

124 

141 

156

150 

159 

167 

145 

120

121 

148 

163 

171 

163 

167

Apr.

34tl 

189 

159 

159 

158

150 

141 

145 

163 

183

v442 

145 

347 

440 

416

365 

371 

216 

220 

234

193 

206 

265 

270 

299

316 

404 

483 

531 

573

Secondfoot-days

1,542 

1,459 

1,626

29,181

1,632 

2,441 

4,868 

8,523 

30,267 

3,641 

4,660 

2,548 

2,154

70, 361

May

577 

619 

682 

722 

729

el, 510 

el, 310 

1,060 

1,620 

2,000

1,090 

1,200 

1,840 

el, 500 

1,070

912 

920 

912 

912 

1,050

708 

688 

764 

791 

686

345 

735 

660 

628 

582 

545

Maxlflrmn

119 

62 

92

1,000

63 

223 

361 

573 

2,000 

602 

1,210 

180 

134

2,000

June

511 

e602 

447 

577 

439

373 

590 

533 

386 

355

305 

289 

283 

282 

240

217 

208 

199 

190 

178

190 

167 

151 

144 

140

133 

133 

130 

128 

121

July

133 

112 

109 

107 

109

109 

107 

103 

93 

92

91 

93 

87 

87 

103

85 

89 

109 

96 

91

S3 

85 

80 

e406 

el, 210

277 

e!50 

93 

93 

85 

83

Minimum

41 

40 

35

30

35 

47 

81 

141 

545 

121 

80 

61 

56

35

Aug.

80

77 

76 

76 

73

76 

81 

80 

79 

174

180 

82 

88 

65 

103

88 

81 

79 

75 

74

71 

72 

71 

69 

69

68 

68 

66 

63 

63 

61

Mean

49.7 

48.6 

S2.5

79.7

52.6 

87.2 

157 

284 

976 

288 

150 

32.2 

71.8

193

Sept.

61 

61 

60 

60 

60

60 

60 

58 

58 

58

56 

56 

184 

135 

60

60 

66 

67 

67 

67

67 

SO 

82 

80 

78

76 

69 

69 

69 

71

Run-off In 

acre-feet

3,060 

2,890 

3,230

57,900

3,240 

4,840 

9,660 

16,910 

60,030 

17,140 

9,240 

5,050 

4,270

139,600

a No gage-height record; discharge Interpolated.

e Gage reading not representative of average for day; die charge computed on basis of records for 

stations on the Virgin River at virgin, and Littlefleld.
230 WILLIAMS RIVER BASIN

Williams River near Alamo, Arlz.

Location.- Water-stage recorder, lat. 34°14', long. 113°35', In SWiNWi sec. 2, T. 10 N., 

R. 13 W., 1.5 miles downstream from Alamo 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.- 4,730 square miles.

Records available.- December 1939 to September 1941.

Extremes.- Maximum discharge during year, 38,200 second-feet Mar. 14 (gage height, 23.0 

feet;; minimum observed, 4 second-feet Oct. 1-4 and Sept. 8-12.

1939-41: Maximum discharge, that of Mar. 14, 1941; minimum dally, 4 second-feet on 

many days each year.

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). Ploodmarks Indicate a previous stage of about 46 feet.

Remarks.- Records fair above 15,000 second-feet and poor below, 

for Irrigation.

Diversions above station

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26

27 

28

es

30 

31

Oct.

e4

e4 

e4 

e4 

420

450 

120 

42 

IS 

11

7 

6 

6 

6 

66

e6 

e6

66 

66

e6

e6 

e6 

e6 

67 

e7

e7 

e7

67

e7 

e7 

07

HOT.

67 

67

a7

67

7

7 

7

7 

7 

7

7 

7 

7 

7 

7

7 

7 

15 

35 

30

25 

18 

14 

14 

14

14 

14 

14 

IS 

21

Dec.

21 

IS 

IS 

14 

14

14

14 

14 

IS 

IS

21 

81 

25 

28 

28

28 

32 

680 

670 

e260

640 

630 

e80 

200 

16,800

2,250 

960 

4SO 

3SO 

600 

8,500

Jan.

5,300 

1,260 

750 

570 

460

360 

280 

840 

800 

ISO

160 

620 

5SO 

300 

170

160 

120 

180 

130 

120

120 

110 

100 

110 

2,700

2,800 

1,850 

830 

730 

S10 

880

. Feb.

600 

510 

360 

300 

280

170 

200 

1,240 

560 

330

270 

260 

250 

250 

226

210 

210 

210 

280 

280

4,200 

2,640 

4,630 

8,480 

9,030

8,820 

1.S80 

1,250

Month

Oct 

Hoi 

Dec

C

Jan 

Fel 

Mar 

Apr 

May 

Jun 

Jul 

Aug 

Set

1

alendar year 19' W. .....................

ater year 1940-4

Mar.

2,570 

19,300 

3,480 

1,600 

1,380

3,950 

8,610 

1,390 

760 

690

590 

470 

4,390 

25,800 

15,900

3,290 

2,510 

1,280 

1,360 

1,400

1,360 

1,260 

1,040 

900 

610

470 

410 

410 

410 

360 

340

Apr.

280 

210 

560 

540 

480

440 

360 

280 

210 

150

160 

6,790 

16,700 

14,300 

5,840

4,880 

2,900 

1,810 

1,500 

1,100

S40 

660 

490 

670 

780

600 

470 

350 

880 

150

Secondfoot-days

1,212 

365 

85,556

40,886

82,580 

35,685 

101 ,570 

64,650 

1,858 

300 

1,088 

3,922 

7,284

266 ,010

Hay

180 

180

I alOO 

> a80

> a60 

V a50

a40

38 

28 

S2 

22

24

Maximum

450 

35 

16,800

16,800

5,300 

9,030 

25,800 

16 ,700 

120 

26 

343 

1,360 

3,200

85,800

June

26 

21 

80 

16

15

14 

13 

13 

13 

12

11 

10 

10 

8 

S

e

8 

7 

7 

7

7 

6 

5 

5 

5

5 

5 

5 

5 

6

July

6 

5 

5 

6 

6

5 

5 

5 

6 

6

6 

5 

5 

6

' 5

5 

5 

343 

34 

24

14 

11 

9 

56 

96

140 

125 

670 

e35 

626 

e!5

Minimum

4 

7 

14

4

100 

170 

340 

150 

22 

5 

5 

5 

4

4

Aug.

elO 

elO

65 

65 

65

65

25 

80 

110 

1,360

940 

780 

240 

105 

116

48 

21 

14 

14

13

11 

10 

9 

S 

7

6

5 

5 

5 

5 

5

Mean

39.1 

12.2 

S24

112

726 

1,274 

3,876 

2,155 

59.9 

10.0 

35.1 

187 

243

729

Sept.

5 

5 

5 

5 

5

5 

5 

4 

4 

4

4 

4 

3,200 

2,300 

714

348 

224 

186 

71 

40

30

18 

16 

IS 

16

16 

22 

24 

22 

86

Run-off In 

acre-feet

2,400 

724 

50,690

81 ,090

44,670 

70,780 

201,500 

128,200 

3,690 

595 

2,160 

7,780 

14,450

527,600

Peak discharge.- Dec. 25 (5:40 a.m.) 30,400 sec.-ft.j Feb. 26 (3 a.m.) 14,100 sec. -ft.} Mar, 2

BjoO a.m.; 37,600 see.-ft.: Mar. 14 19:4O p.m.) 

sec.-ft.; Sept. 13 (7 p.m.) 13,500 sec.-ft.

a No gage-height record; discharge computed on basis of recorded range In stage, weather records, 

and records for station at Planet.

e Stage-discharge relation Indefinite; discharge computed en basis of 3.discharge measurements, 

adjoining good record, weather records, and records for stations at Planet and Santa Maria River neat

Upte.- Channel at low stages not directly connected to gage; recorded variation In ground-miter 

level -used to compute discharge.
WILLIAMS RIVER BASIN 231

Williams River at Planet, Arlz.

Location.- Water-stage recorder, lat. 34°16', long. 113°59', In NEi sec. 36, T. 11 N., R. 

17 W., 1 mile west of Planet and 6 miles upstream from water line of Lake Havasu when 

it ie at elevation 450 feet above mean sea level. Datum of gage is 556.33 feet above 

mean sea level, datum of 1929.

Drainage area.- 5,140 square miles.

Records available.- October 1910 to December 1912 (gage heights only), January 1913 to 

December 1915, and October 1928 to September 1941.

Average discharge.- 13 years (1928-41), 182 second-feet.

Extremes.- Maximum discharge during year, 42,600 second-feet Mar. 2 (gage height, 9.15 

feet); minimum, 11 second-feet July 28.

1928-41: Maximum discharge, 92,500 second-feet Feb. 7, 1937 (gage height, 13.1 

feet), from rating curve extended above 51,000 second-feet on basis of velocity-area 

study; minimum, 7 second-feet Sept. 30, Oct. 1, 1934.

Maximum floods known (discharges estimated) occurred as follows: 125,000 secondfeet Feb. 16, 1927; 175,000 second-feet about Jan. 19, 1916; 200,000 second-feet about 

Feb. 21, 1891.

Remarks.- Records good except those between 100 and 1,000 second-feet, which are fair. 

Small diverelons above station for Irrigation. During the year 57 discharge measurements were made.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

32 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

20 

21 

22 

24 

26

225 

SI 

33 

26 

26

26 

26 

26 

21 

21

21 

21 

21 

21 

21

21 

21 

21 

21 

21

21 

21 

21 

21 

21 

21

Nov.

22 

22 

22 

22 

22

22 

22 

32 

22 

21

21 

21 

21 

21 

21

21 

21 

21 

21 

21

21 

20 

20 

20 

20

30 

20 

20 

30 

19

Dec.

19 

19 

19 

19 

19

19 

19 

19 

19 

20

20 

20 

19 

19 

19

IS 

30 

47 

212 

33

26 

25 

24 

28 

14,200

2,460 

1,110 

540 

266 

175 

971

Jan.

3,130 

1,340 

484 

330 

162

152 

146 

138 

140 

149

149

542 

334

165 

123

90 

94 

96 

96 

98

94 

96 

88 

103 

1,560

1,910 

596 

350 

428 

286 

340

Feb.

246 

227 

1S5 

1S2 

185

1S2 

190 

992 

416 

252

199 

172 

159 

185 

194

194 

185 

190 

190 

227

4,170 

2,950 

3,890 

1,850 

10,400

2,390 

1,210 

654

Month

Oct 

Hoi 

De<

C

Jar 

Pel 

Mai 

Api 

Ha; 

 Ttu 

Ju] 

Au| 

Sej

1

Feb 

aec

alendar year 1940... ...................

rater year 1940-

Peak discharge. -

. 26 (6:1O a.m. 

.-ft.j Apr. 14

Mar.

805 

18,200 

4,300 

1,980 

1,360

3,100 

1,580 

905 

654 

442

3SO 

400 

2,560 

30,500 

16,000

4,380 

1,300 

830 

578 

616

597 

540 

540 

540 

460

456 

428 

380 

414 

390 

380

Apr.

390 

390

442 

578 

310

218 

213 

208 

223 

339

252 

4,240 

11,300 

13,300 

6,220

5,310 

3,040 

1,480 

1,200 

780

755 

654 

526 

400 

360

320 

390 

360 

513 

300

Secondfoot -days

960 

629 

20,443

34,626

13,799 

32,968 

36 ,015 

54,950 

2,968 

510 

71£ 

2,067 

4,168

220,196

Dec. 25 (S:30 a. a.) 37,800 sec. -ft. 

21,300 sec. -ft. j Mar. 2 (5:25 a.m.] 

2 a.m.) 26,400 see. -ft.

Bay

246 

246 

300 

310 

300

213 

135 

129 

116 

103

88 

79 

68 

62 

67

52 

47 

43 

39 

36

34

32 

32 

28 

26

28 

26 

24 

24 

22 

31

Maximum

225 

22 

14,200

14,200

3,130 

10,400 

20,500 

13 ,300 

310 

20 

150 

722 

2,190

20,500

June

30 

18 

17 

17 

16

16 

16 

16 

16 

17

17 

17 

16 

16 

18

18 

17 

17 

16 

17

16 

17 

17 

17 

17

17 

17 

16 

16 

16

July

16 

16 

16 

17 

17

16 

16 

16 

16 

17

17 

16 

16 

16 

16

17 

16 

15 

86 

16

17 

17 

19 

150 

21

SO 

22 

15 

13 

14 

15

Aug.

14 

16 

16 

16 

16

15 

15 

14 

16 

463

722 

266 

72 

24 

23

24 

24 

23 

23 

23

22 

22 

22 

22 

22

22 

22 

22 

22 

22 

23

Minimum Mean

20 31.0 

19 21.0 

18 659

16 94.6

83 445 

159 1,177 

360 2 ,775 

208 1,832 

21 96.7 

16 17.0 

13 23.2 

14 66 .7 

20 139

13 603

Sept.

21 

21 

22 

22 

22

22 

22 

23 

24 

22

23 

24 

552 

2,190 

515

266 

92 

34 

20 

20

21 

22 

21 

20 

21

21 

22 

21 

21 

21

Run-off In 

acre-feet

1,900 

1,250 

40,550

68 ,670

27,370 

65,390 

170,600 

109 ,000 

5,890 

1,010 

1,430 

4,100 

8,270

436 ,300

{ Feb. 21 (6:15 p.m.) 10,100 seo.-ft.; 

42,600 sec. -ft.; liar. 14 (9:10 a.m.) 35,400
232 WILLIAMS RIVER BASIN

Santa Maria River near Alamo, Ariz.

Location.- Water-stage recorder, lat. 34°18', long. 113°31', In NEiSWi sec. 9, T. 11 II., 

R. 12 W., half a nile upstream from confluence with Big Sandy River and 5i miles upstream from Alamo. Datum of gage is 1,126.6 feet above,mean sea level (river profile 

survey).

Drainage area.- 1,520 square miles.

Records available.- December 1939 to September 1941.

Extremes.- Maximum discharge during year, 15,000 second-feet Mar. 14 (gage height, 9.85 

feet), by slope-area method; minimum, 1 second-foot Oct. 1-5 and July 2-7.

1939-41: Maximum discharge, 15,000 second-feet Sept. 6 or 7, 1939, and Mar. 14, 

1941, by slope-area method; minimum, 1 second-foot on many days.

Flood marks indicate a stage of 12.0 feet occurred probably in 1937 or 1938.

Remarks..- Records fair except those above 100 second-feet, which are poor. Several 

diversions above station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13

14ie

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26

27 

28 

29 

30

31

Oct.

1 

1 

1 

1 

600

175 

14 

6 

5 

4

4 

4 

3 

3 

3

2 

2 

2 

2 

3

3 

3 

4 

4 

3

3 

2 

2 

2 

2 

2

Nov.

2 

3

5 

4 

4

3 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

3 

3

2 

3 

3 

3 

4

4 

4 

4 

4 

4

Dec.

4 

4 

5 

4 

4

4 

2 

2 

2 

2

2 

2 

6 

16 

6

5 

9 

399

119 

34

30 

19 

16 

139 

4,070

774 

216 

154 

99 

146 

776

Jan.

7S9 

365 

159 

99 

73

69 

S7 

73 

60 

57

50 

156 

154 

129 

103

91 

87 

76 

76 

76

63 

57 

57 

63 

719

228 

181 

131 

175 

204 

193

Feb.

149 

111 

83 

73 

66

50 

92 

187 

175 

129

103 

103 

115 

107 

99

91 

95 

79 

83 

13S

714 

459 

1,160 

688 

3,670

1,120 

595 

575

Month

Oct 

No\ 

Dee

' C

Jar 

Fel 

Mai 

Api 

Maj 

Jur 

Ju3

AU£

Sei 

H

7

fater year 1940-41.... ............ .....

Mar.

1,360 

4,630 

1,090 

516 

535

1,290 

781 

442 

169 

154

134 

119 

2,080 

8,290 

6,540

2,620 

305 

382 

269 

124

103 

103 

95 

99 

91

91 

87 

83 

83 

73 

69

Apr.

73 

149 

382 

296 

175

115 

83 

73 

69 

66

147 

4,100 

6,970 

5,4SO 

2,940

1,920 

713 

332 

350 

319

243 

222 

210 

175 

169

149 

139 

107 

95 

95

Secondfoot-days

866 

86 

7,070

10,039

4,950 

11,109 

33,307 

26,411 

' 1 ,037 

96 

86 

251 

7,699

92,968

May

99 

S3 

73 

60 

57

60 

57 

53 

50 

47

42 

34 

32 

30 

27

24 

27 

22 

20 

19

16 

14 

16 

12 

11

9 

9 

9 

8 

9

e

Maximum

600 

5 

4,070

4,070

789 

3,670 

8,290 

6,970 

99 

6 

11 

63 

3,060

8,290

June

6 

6 

6 

5 

6

5 

5 

5 

4 

4

4 

3 

3 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

July

2

1 

1 

1

1

1 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

4 

5 

3

2 

2 

2 

3 

4

11 

5 

4 

4 

4 

4

Minimum

1 

2 

2

1

50 

50 

69 

66 

8 

2 

1 

2 

2

1

Aug.

4

4 

4 

3

4 

4 

3 

9 

46

63 

22 

11 

9 

12

6 

5 

4 

3 

3

3 

3

3 

2 

2

2 

2 

2 

3 

3 

3

Mean

27.9 

2.9 

228

27.4

160 

397 

1,074 

880 

33.4 

3.2 

2.8 

8.1 

257

255

Sept.

3 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2,7SO 

3,060 

825

450 

248 

107 

60 

30

24 

16 

11 

8 

9

S 

6 

8 

8 

16

Run-off In 

acre-feet

1,720 

170 

14,020

19,920

9,820 

22,030 

66,060 

52,390 

2,060 

190 

170 

498 

15,270

184,400

Peak discharge.- Dec. 24 (11:50 p.m.) .. 7.8OO sec. .. -ft.; Feb. . 25 (11 p.m.) . 3.700 , sec. .. -ft.; Mar. . 1

(11 p.m.) 9,200 sec.-ft.5 Mar. 14 ( 9 p.m.) 15,000 sec.-ft.; Apr. 13 (6i50 p.m.) 10,700 sec.-ft.s 

Sept. 13 (6 p.m.) 10,000 sec.-ft.
WILLIAMS RIVER BASIN 233

Date Creek near Congress, Aria.

Location.- Water-stage recorder, lat. 34°12', long. 113°08', in NW^SEi sec. 13, T. 10 

II., R. 9 W., 0.6 mile upstream from Sawyer dam site, 17 miles west of Congress, and 

25 miles upstream from mouth.

Drainage area.- 127 square miles.

Records available.- October 1939 to September 1941.

Extremes.- Maximum discharge during year, 1,400 second-feet Mar. 14 (gage height, 5.75 

reet) cy slope-area studies; no flow during greater part of year.

1939-41: Maximum discharge, that of Mar. 14, 1941; no flow during greater part 

of each year.

Remarks.- Records poor. Small diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

3S 

272

91 

6 

0

Month

Oct 

NOT 

Dec

C

Jai 

Fel 

Mai 

Api 

Maj 

Jur 

Ju] 

Aug 

Sei

H

alendar year 194O... ...................

fater year 1940-

Mar.

47 

196 

14 

0 

72

8 

0 

0 

0 

0

0 

0 

2S6 

5S9 

430

144 

109 

44 

6 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

83 

309 

488 

233 

173

131 

56 

17 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot -days

0 

0 

0

1

0

407 

1,945 

1,490 

0

0 

32 

2

1

3,S77

May

Maximum

0 

0 

0

1

0 

272 

589 

488 

0 

0 

32 

1 

1

589

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

32 

0 

0

0 

0 

0 

0 

0

0 

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 

0

1

0 

0 

0 

0

i

0

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

0 

0 

0

0

0 

14.5 

62.7 

49.7 

0 

0 

1.0 

.1 

0

10.6

Sept.

0 

0

0 

0 

0

0 

0 

0 

0 

0

0 

0

1

0 

0

0 

0 

0 

0 

0

0

0 

0 

0 

0

0 

0 

0 

0 

0

Run-off in 

acre-feet

0 

0 

0

2

0 

807 

3,S60 

2,960 

0 

0 

63 

4 

2

7,700

Peak discharge.- Mar. 14 (8:30 p.m.) 1,400 sec. -ft.j Apr. 13 (4:20 p.m.) 878 sec.-ft.
234 DIVERSIONS BETWEEN BOULDER DAM AND IMPERIAL DAM

Colorado River aqueduct near Parker Dam, Arlz.-Calif.

Location.- Venturl meters at Intake pumping plant of Metropolitan Water District of

 Southern California, lat. 34°19', long. 114°09', in SWi ssc. 28, T. 3 N., R. 27 E., 

San Bernardlno meridian, on Lake Havasu, 1.8 miles upstream from Parker Dam which Is 

156 miles downstream from Boulder Dam.

Records available.- January 1939 to September 1941.

Extremes.- Maximum dally diversion during year, 588 second-feet Sept. 11; no diversion 

during several periods.

1939-41: Maximum dally diversion, 692 second-feet Mar. 26, 1939; no diversion for 

many periods.

Remarks.- Records given herein are those of flow diverted to Colorado River aqueduct by 

pumping, from Lake Havasu on Colorado River. Figures represent diversion to Colorado 

River aqueduct, and include evaporation losses and percolation losses, mostly from 

Gene and Copper Basin Reservoirs. Pumped water measured by venturl meters, Individually rated by salt-velocity method. During April, May, and July some water was 

returned to Lake Havasu from Oene Reservoir; records of return flow computed from 

frequent gage-height readings on Oene reservoir for changes In contents, and from 

record of opening and closing of reservoir gates. Figures of monthly diversion have 

been adjusted for this return surface flow. Records computed using Pacific standard 

time. Pumping first began Jan. 7, 1939.

Cooperation.- Records furnished by Metropolitan Water District of Southern California.

Discharge, la second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

417 

403 

204 

190 

214

215 

214 

216 

216 

216

206 

0 

10 

428 

426

377 

212 

211 

212 

213

214 

216 

216 

216 

206

O 

10 

407 

403 

313 

196

Nov.

196 

201 

202 

202 

203

203

203 

193 

0 

- S

418 

416 

409 

224 

203

204 

204 

206 

206 

206

206 

196 

0

11 

417

393 

72 

0 

0 

0

Dee. Jan.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

16 

429 

429 

431 

432

428 

249 

0 

0 

0 

0

Month

Oct 

NOT 

Dec

0

Jam 

Fob 

Mar AprMay 

Jun 

Jul 

Augi 

Sep

Wi

ilendar year 1941

»ter year 1940-41. ........

Feb.

0 

0 

82 

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

Mar.

0 

0 

0 

0 

0

142 

208 

206 

216 

214

169 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

observed

Discharge In 

second-feet

Nazi428

413 

0

679

432 

82 

215 

419 

278 

415 

213 

421 

588

688

Mini0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Mean

232 

187 

0

190

77.8 

2.9 

37.2 

131 

157 

65.5 

35.6 

56.6 

SI. 4

89.0

Apr.

0 

0 

0 

279 

418

419 

138 

0 

0 

0

0 

0 

0 

0 

0

0 

132 

210 

206 

203

209 

211

211 

211 

211

130 

121 

204 

203 

202

»»y

202 

206 

212 

211 

212

211 

211 

212 

212 

212

213 

213 

68 

0 

0

0 

138 

210 

208 

206

204 

202 

202 

202 

202

278 

231 

0 

0 

0 

0

Run-off 

In 

acre-feet

14,260 

11,100 

0

137,380

4,790 

163 

2,290 

7,770 

9,670 

3,900 

2,180 

3,480 

4,860

64,460

June

0 

0 

0 

0 

0

0 

0

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

260 

416

0 

0 

168 

234 

232

22S 

221 

214 

2 

0

July

169 

213 

210 

209 

208

92 

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

Return surface 

flow 

(acre-feet )t

0

0 

0

41,670

0 

0 

0 

4,080 

7,000 

0 

906 

0 

0

11,990

Aug.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

138 

212 

352

421 

364 

267 

0 

.0 

0

Sept.

0 

0 

0 

0

0

0 

0 

0 

0 

0

688 

468

0

8

288 

419 

394 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

307

Adjusted for 

return surface 

flow 

(acre-feet)

14,260 

11,100 

0

96,710

4,790 

163 

2,290 

3,690 

2,670 

3,900 

1,270 

3,480 

4,860

62,460

t Return surface flow from Gene Basin Reservoir; no return surface flow fron Copper Basin 

Reservoir during this year.

Note.- Contents In regulation reservoirs on September SO, 1941: lake Mathetra 88,709 acre-feet; 

Oene and Copper Baala Reservoirs (combined) 26,363 acre-feet.
DIVERSIONS BETWEEN BOULDER DAM AND IMPERIAL DAM 235

Diversion for Colorado River Indian Reservation near Parker, Arlz.

Location.- Pump house on left bank of Colorado River, lat. 34°09', long. 114°18', In

 SE± sec. 2, T. 9 N., R. 20 W., Glla and Salt River meridian, on Colorado River 

Indian Reservation, 1 mile southwest of Parker and 17 miles downstream from Parker 

Dam.

Records available.- January 1915 to December 1938 (calendar year discharge), January 

1937 to September 1941 (monthly discharge).

Remarks.- Discharge computed from records of pump operation, checked by current-meter

 and Parshall-flume measurements. Water is pumped to canals for Irrigation of lands 

In Colorado River Indian Reservation, which lies on east side of Colorado River and 

extends from Parker on the north to a point near Ehrenberg on the south.

Cooperation.- Records furnished by Office of Indian Affairs.

Monthly summary of diversions for water year October 1940 to September 1941

Month

Calendar year 1940. .....

fcy......... ..............

Water year 1940-41. .....

Discharge In second-feet

Maximum 

dally

90 

90 

90

155

0 

156 

0 

136 

142 

165 

167 

167 

167

167

Minimum 

dally

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Mean

85.0 

4.8 

4.5

51.5

0 

8.2 

0 

44.0 

82.0 

54.8 

105 

99.0 

75.5

41.7

Run-off In 

acre-feet

1,410 

886 

864

57,590

0 

456 

0 

8,620 

5,030 

5,220 

6,310 

6,080 

4,490

30,170

461676 O-42-16
236 DIVERSIONS BETWEEN BOULDER DAM AND IMPERIAL DAM

Palo Verde canal near Blythe, Calif.

Location.- Water-stage recorder, lat. 33°43', long. 114°31', In SWi sec. 19, T. 5 S., 

RT~23~E., San Bernardlno meridian, below settling basin, three-quarters of a mile 

downstream from Intake on Colorado River, and 9i miles northeast of Blythe.

Records available.- January 1922 to December 1923, January 1925 to September 1941.

Remarks.- Figures given herein are those of flow diverted from Colorado River less that 

 returned to river by canal wasteways. Flow diverted from river computed on basis of 

head on gate openings and occasional current-meter measurements; flow In canal 

wasteways estimated In the field by employees of the Palo Verde Irrigation District.

Canal diverts water from right bank of Colorado River In NEi sec. 19, T. 5 S., 

R. 24 E., San Bernardlno msrldlan, 10 miles northeast of Blythe for irrigation of 

lands In Palo Verde Irrigation district In vicinity of Blythe and Rlpley, Riverside 

County, Calif. Records for October 1938 to September 1940 given herein supplement 

those published In Water-Supply Papers 879 and 899.

Cooperation.- Records furnished by Palo Vsrde Irrigation District.

Monthly summary of diversions 1933-41

Month

Calendar year 1938

May.....................

Calendar year 1939 ....

Hay. ....................

Calendar year 1940 ....

Hay.....................

Diversions at intake

Discharge in second-feet

Haximum

460 

240 

240

590

150 

430 

550 

590 

650 

660 

630 

570 

320

660

420 

320 

300

660

330 

450 

600 

700 

650 

SIO 

850 

SIO 

670

850

680 

550 

500

S50

220

640 

560 

700 

580 

7SO 

S30 

740 

790

S30

Minimum

160 

ISO 

60

40

50 

160 

240 

360 

330 

410 

300 

350 

0

0

110 

110 

170

0

220 

230 

350 

200 

400 

520 

520 

560 

410

110

470 

430 

60

60

80 

160 

100 

270 

180 

3SO 

470 

120 

410

60

Hean

279 

207 

141

313

89. 7 

271 

437 

482 

524 

553 

537 

467 

94.3

341

258 

262 

220

350

275 

321 

417 

448 

526 

642 

684 

6S6 

57S

443

579 

469 

323

496

126 

3SO 

308 

525 

493 

511 

6S4 

537 

604

470

Run-off

Secondfoot -days

S,640 

6,210 

4,380

114,300

2,7SO 

7,580 

13, 550 

14,460 

16,250 

16,5SO 

16, 660 

14,480 

2,S30

124,400

7,990 

7,S60 

6,820

127,800

8,520 

9,320 

12,930 

13,450 

16,300 

19,270 

21, 200 

21,270 

17,330

162,300

17,940 

14,080 

10,010

181,600

3,900 

10,640 

9,560 

15,740 

15,270 

18,340 

21,190 

16,660 

18,110

171, 440

Acre-feet

17,140 

12,320 

S, 690

226,700

5,510 

15,030 

26,380 

28,680 

32,230 

32,890 

33,040 

28,720 

5,610

246,700

15, 850 

15, 590 

13,530

253,600

16,900 

IS, 490 

25, 650 

26,680 

32, 330 

38,220 

42,050 

42,190 

34,370

321,800

35, 580 

27,930 

19,850

360,200

7,740 

21,100 

18,960 

31,220 

30,290 

36,380 

42,030 

33,040 

35,920

340,000

Estimated 

waste 

water 

(acre-feet)

1,230 

1,190 

1,350

14,600

1,210 

1,110 

1,230 

1,190 

1,230 

1,190 

1,210 

1,230 

1,030

14,400

1,5SO 

1,560 

1,350

15,120

1,690 

1,S50 

2,560 

2,670 

3,230 

3,S20 

4,200 

4,220 

3,440

32, 170

3,560 

2,790 

1,980

36,010

770 

2,110 

1,900 

3,120 

3,030 

3,070 

3,450 

2,740 

3,390

31, 910

Net 

diversions 

(acre-feet)

15,910 

11,130 

7,340

212,100

4,300 

13,920 

25,650 

27,490 

31,000 

31,700 

31,830 

27,490 

t4,580

232,300

14,270 

14,030 

12,180

238,400

15,210 

16,640 

23,090 

24,010 

29, 100 

34,400 

37,850 

37,970 

30,930

289,700

32,020 

25,140 

17,870

324,200

6,970 

13,990 

17,060 

28,100 

27,260 

33, 310 

38,580 

30,300 

32,530

308, 100

t Figure supersedes that published in Water-Supply Paper 879.
GILA RIVER BASIN 

Qila River near Qila, N. Hex.

237

Location.- Water-stage recorder, lat. 33°04'05", long. 108°32'10", in SEiSWi sec. 19, T. 

14 S., R. 16 W., at Hooker dam site, 1 mile upstream from Mogollon Creek and 7 miles 

northeast of Gila. Datum of gage is 4,655.8 feet above mean sea level (river-profile 

survey).

Drainage area.- 1,870 square miles.

Records available.- April to December 1914 (at site 3 miles upstream and about a quarter 

of a mile downstream from Turkey Creek) and October 1930 to September 1941 in reports 

of Geological Survey. April to December 1914 and November 1927 to December 1928 (at 

site 3 miles upstream) and January 1929 to December 1931 in reports of State engineer.

Average discharge.- 13 years (1928-41), 146 second-feet.

Extremes.- Maximum discharge during year, 25,400 second-feet Sept. 29 (gage height, 17.19 

feet, from floodnark), from rating table extended above 1,090 second-feet on basis of. 

velocity-area studies and logarithmic plotting; minimum daily, 44 second-feet July 13. 

1930-41: Maximum discharge, that of Sept. 29, 1941; minimum daily, 21 second-feet 

June 22, 27, 1934, and July 14, 1939.

Remarks.- Records good except those for periods of missing gage height and those above 

2,000 second-feet, all of which are poor. One small diversion above station for 

irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

139 

114 

100 

S6 

73

75 

70 

66 

62 

61

60 

62 

62 

62 

60

57 

56 

55 

54 

54

54 

52 

54 

54 

54

54 

54 

54 

54 

55 

55

Nov.

55 

55 

54 

55 

54

55 

57 

60 

56 

56

54 

54 

54 

58

51

51 

51 

54 

96

112

93 

S5 

94 

106 

106

104

102 

10S 

IDS 

10S

Dec.

102 

106 

104 

104 

101

93 

9S 

101 

101 

101

146 

630 

1,020 

60S 

420

287 

256 

305 

296 

256

226

19S 

182 

170 

883

655 

440 

350 

274 

280 

1,530

Jan.

1,480 

870 

598 

444 

374

332 

317 

274 

250 

23S

243 

758 

1,160 

755 

580

456 

392 

326 

235 

271

248 

226 

209 

204 

220

209 

196 

3S2 

340 

870 

594

Feb.

480 

424 

374 

347 

335

350 

549 

S40 

340 

7SO

340 

960 

SIO 

630 

594

562 

572 

572 

562 

554

621 

755 

S40 

900 

840

755 

655 

621

Month

Dot

No\ 

Dec

C

Jar 

Pet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

HI

alendar year 19^

ater year 1940-<

Peak discharge. -

(S p.m.) 2,200 sec.-

Mar.

593 

705 

780 

680 

59S

554 

496 

448 

402 

378

360 

354 

512 

1,060 

2,150

2,610 

1,740 

1,200 

370 

730

755 

680 

S40 

870 

340

730 

567 

476 

444 

476 

500

Apr.

594 

655 

655 

603 

549

524 

504 

476 

452 

448

444 

440 

468 

42S 

385

354

341 

357 

357 

329

305 

287 

266 

243 

243

455 

1,350 

1,470 

1,090 

870

Secondfoot -days

2,027 

2,1S7 

10,473

52,713

14,601 

13,012 

24,403 

16 ,442 

15,996 

4,440 

3,038 

3,602 

22,371

138,097

May

S40 

900 

310 

6SO 

655

680 

755 

780 

755 

730

730 

705 

705 

655 

549

464 

420 

396 

373 

360

344 

326 

290 

256 

233

279 

274 

271 

263 

26C 

248

Maximum

139 

112 

1,580

1,580

1,460 

960 

2,610 

1,850 

900 

226 

205 

264 

13,000

13,000

June

226 

222 

220 

209 

202

200 

194 

188 

136 

ISO

172 

157 

142 

132 

130

128 

125 

121 

112 

103

105 

108 

124 

127 

131

118 

105 

96 

8S 

34 

-

July

76 

71 

67 

63 

63

67 

67 

67 

71 

69

63 

43 

44 

53 

108

1S4 

176 

121 

131 

159

205 

150 

144 

17S 

105

84 

76 

71 

69 

67 

69

Minimum

52 

51 

9S

34

196 

335 

354 

243 

238 

84 

44 

55 

55

44

Aug.

65 

61 

55 

55 

57

61 

59 

59 

65 

67

67 

65 

69 

73 

94

150 

192 

162 

108 

143

176 

171 

21S 

220 

161

131 

108 

96 

264 

132 

143

Mean

65.4 

72.9 

336

144

471 

643 

737 

54S 

516 

148 

98.0 

116 

762

373

Sept.

194 

146 

121 

102 

94

36 

91 

a89 

086 

aS2

a7S 

a74 

a74 

a76 

76

69 

69 

63 

63 

61

61 

67 

65 

57 

57

57 

55 

208 

d!3,000 

a7,450

Run-off in 

acre-feet

4,020 

4,340 

20,730

104,600

28,960 

35,730 

48,400 

32,610 

31,730 

S,S10 

6,030 

7,140 

45,360

273,900

Dec. 13 (10 a.m.) 1,120 sec. -ft.; Dec. 25 (11 a.m.) 1,200 sec. -ft.; Dee. 31 

 ft.; Aug. 22 (10 p.m.) 930 sec. -ft.; Sept. 29 (7 a.m.) 6,S70 sec. -ft.; Sept. 29

a No gage-height record; discharge computed on basis of weather records and records for stations 

near Pullers Ranch and at Arizona-New Mexico State-line.

d Doubtful gage-height record; discharge computed on basis of available gage heights, weather 

records, and records for Pullers Ranch and State-line stations.
238 GILA RIVER BASIN 

Gflla River near Red Rock, N. Hex.

Location.- Water-stage recorder, lat. 32°45', long. 108°40', In sec. 23, T. 18 S., R. 18 

W., 4 miles northeast of Red Rock and 11 miles downstream from Mangas Creek.

Drainage area.- 2,860 square miles.

Records available.- May 1908 to December 1914 and October 1930 to September 1941 In

reports of Geological Survey. May 1908 to December 1931 In reports of State engineer.

Average discharge.- 23 years (1909-10, 1912-14, 1918-24, 1927-41), 196 second-feet.

Extremes.- Maximum gage-height during year, about 31 feet, Sept. 29 (discharge not 

determined), from high-water marks; minimum dally, 36 second-feet Aug. 4.

1930-41: Maximum gage height, that of Sept. 29, 1941; minimum dally, 6.0 secondfeet July 12, 1939.

Remarks.- Records fair except those estimated, which are poor. Diversions above station rlgatlon.

Discharge, In second-feet, water year October1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

146 

139 

112 

103 

95

93 

88 

86 

85 

70

69 

78 

77 

76 

78

72 

67 

60 

56 

57

58 

59 

69 

67 

66

64 

67 

68 

67 

67 

69

Nov.

69 

71 

72 

71 

70

70 

76 

78 

83 

80

80 

SI 

82

80 

80

76 

80 

82 

US 

176

153 

13£ 

15£ 

17£ 

157

162 

150 

144 

139 

139

Dec.

139 

146 

148 

146 

140

137 

134 

135 

137 

137

146 

487 

1,110 

75J 

530

420 

372 

436 

476 

43!

386 

346 

318 

308 

1,170

1,040 

660 

535 

458 

428 

3,520

Jan.

3,070 

1,540 

1,150 

S60 

716

645 

550 

476 

428

416

424 

824 

1,770 

1,230 

89S

75J 

615 

503 

451 

408

388 

366 

34£ 

32£ 

339

336

304 

1,240 

1,920 

1,870 

1,230

Feb.

965 

81S 

722 

660 

635

640 

1,400 

2,120 

1,360 

1,150

1,190 

1,270 

1,190 

1,000 

854

806 

830 

848 

S3C 

806

86C 

1.04C 

1,11C 

1,150 

1,070

1,040 

84S 

78£

Month

Got 

Non 

Dec

C

Jan 

Pel 

liar

Apr 

Maj 

Jur 

Jul 

Aug 

Sej

fl

alendar year 194

ater year 1940-4

Mar.

758 

860 

1,070 

965 

S48

S18 

754 

670 

600 

560

521 

508 

675 

1,460 

2,240

3,780 

2,830 

1,970 

1,580 

1,400

1,230 

1,150 

1,360 

1,360 

1,310

1,190 

1,040 

895 

860 

895 

930

Apr.

1,040 

1,150 

1,150 

965 

860

812 

776 

722 

680 

670

650 

610 

660 

595 

540

508 

512 

516 

535 

462

412 

380 

368 

339 

332

806 

2,260 

2,040 

1,520 

1,270

Secondfoot-days

2,422 

3,170 

15,731

76,971

26,363 

27,988 

37,067 

24,140 

22,957 

5,093 

3,711 

6,703 

52,640

227,985

Bay

1,200 

1,650 

1,310 

1,120 

1,060

1,090 

1,120 

1,120 

1,060 

1,O3O

1,030 

l.OOO 

940 

862 

775

678 

. 590 

514 

498 

466

441 

408 

381 

342 

321

336 

336

316 

307 

318 

318

Maximum

146 

178 

3,520

3,890

3,070 

2,120 

3,7SO 

2,260 

1,650 

310 

324 

630

-

June

310 

29S 

304 

301 

290

a260 

a250 

a230 

a210 

a210

215 

1S5 

160 

130 

123

126 

126 

111 

102 

93

104 

107 

110 

111 

147

119 

97 

90 

90 

84

July

79 

74 

72 

73 

74

66 

63 

62 

60 

56

50 

47 

47 

48 

69

93 

194 

297 

251 

205

324 

202 

183 

238 

192

a!50 

al£0 

103 

83 

73 

63

Minimum

56 

69 

134

27

304 

635 

508 

332 

307 

84 

47 

36 

70

36

Aug.

55

a45 

a40 

36 

57

52 

44 

86 

96 

90

82 

69 

6S 

73 

81

555 

530 

293 

220 

 200

630

431 

375 

321 

313

a260 

a240 

a240 

396 

375 

a350

Mean

78.1 

106 

507

210

S50 

1,000 

1,196 

805 

741 

170 

120 

216 

1,755

625

Sept.

1,280 

245

196 

a!60 

alSO

a!40 

alSO 

alSO 

alSO 

115

allO 

alOO 

a90 

alOO 

99

alOO 

95 

a90 

aSO 

a70

a70 

a70 

a70 

80 

a90

aSO 

aSO

a5OO 

aS4,000 

_ \

Run-off In 

acre-feet

4,800 

6,290 

31,200

152,700

52,290 

55,510 

73,520 

47,880 

45,530 

10,100 

7,560 

13,300 

104,400

452,200

Peak discharge.- Jan. 1 (1 a.m.) 5,310 see.-ft.; Jan. 28 (7 p.m.) 3,920 sec.-ft.; Feb. 8 (1 a.m.) 

3,630 sec.-ft.; Har. 16 (7 a.m.) 4,150 sec.-ft.; Sept. 1 (8 a.m.) 6,280 sec.-ft.; Sept. 29, 

discharge not determined.

a No gage-height record; discharge computed on basis of weather records and records for stations 

below Blue Creek and at New Mexico-Arizona State line.
01 LA RIVER BASIN 239

Qila River below Blue Creek, near Virden, N. Hex.

Location.- Water-stage recorder, lat. 32°39', long. 108°51', in SEiSWi sec. 18, T. 19 

s., R. 19 W., at head of canyon, just downstream from ranch formerly known as Fuller 

Ranch, It miles downstream from Blue Creek, 10 miles east of Virden, and 16 miles 

east of Duncan, Ariz. Datum of gage is 3,875 feet above mean sea level (from riverprofile map).

Drainage area.- 3,220 square miles, excluding that of Animas Basin.

Records available.- June 1931 to September 1941. May 1914 to September 1915 at site 6 

mnes downstream, above intake of Sunset canal. January 1923 to September 1926 at 

site 8 miles downstream, below intake of Sunset canal. October 1926 to September 

1931, at Virden Bridge, Si miles downstream.

Average discharge.- 10 years (1931-41), 204 second-feet.

Extremes.- Maximum discharge during year, 41,700 second-feet Sept. 29 (gage height, 

25.78 feet); minimum, 27 second-feet July 14.

1931-41: Maximum discharge, that of Sept. 29, 1941; minimum, 1 second-foot July 

14, 1934.

Remarks.- Records good. Diversions above and below station for irrigation. Station is 

aoove all diversions for Duncan Valley. During the year 44 discharge measurements 

were made.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

IS 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

23 

29

30 

31

Oct.

126 

134 

117 

108 

103

94 

90 

80 

74 

72

70 

72 

74 

74 

74

72 

68 

57 

48 

51

55 

55 

57 

59 

59

59 

57 

62 

62 

62 

66

Nov.

68 

70 

72 

74 

72

68 

66 

70 

86 

74

74 

80 

82 

80 

80

80 

80 

72 

105 

165

152 

137 

137 

184 

181

155 

149 

149 

146 

146

Dec.

143 

143 

146 

146 

143

140 

134 

134 

137 

137

140 

415 

955 

842 

614

504 

445 

482 

549 

532

477 

440 

406 

387 

1,340

1,380 

768 

596 

509 

456 

3,490

Jan.

3,400 

1,740 

1,280

954 

754

689 

598 

529 

484 

461

456 

552 

1,470 

1,310 

986

822 

695 

582 

513 

470

439 

409 

381 

359 

355

348 

334 

522 

1,520 

1,470 

1,120

Feb.

822 

706 

614 

549 

618

508 

945 

2,160 

1,410 

1,210

1,160 

1,240 

1,240 

1,020 

859

791 

779 

766 

754 

730

742 

890 

1,080 

1,180 

1,150

1,050 

954

359

Month

Oct 

Noi 

Dec

C

Jar 

Pet 

Ifai

Api

Maj 

Jur 

Ju3

Aug

Set

H

alendar year 194 0....... ...............

ater year 1940-

Peak discharge.-

(vjjst) p.m.j .i.Seo 

Sept. 30 (12ilO a.

Mar.

797 

822, 

966 

954 

859

785 

736 

671 

604 

566

529 

513 

544 

1,180 

1,930

3,180 

2,540 

1,350 

1,470 

1,310

1,180 

1,150 

1,180 

1,240 

1,210

1,120 

936 

890 

822 

797 

822

Apr.

S59 

922 

936 

922 

822

766 

736 

706 

666 

654

648 

614 

648 

614 

555

523 

508 

499

499 

479

447 

413 

339 

366 

351

479 

1,700 

1,920 

1,440 

1,150

Secondfoot -daya

2,310 

3,154 

17,130

73,790

26,002 

26,676 

34,222 

22,281 

21,005 

4,706 

3,547 

6,627 

38,982

206,642

Bay

1,050 

1,540 

1,150 

986 

922

922 

954 

986 

954 

922

922 

390 

859 

S22 

748

660 

582 

508 

470 

452

439 

413 

377 

344 

313

317 

317 

307 

294 

291 

294

Maximum

134 

184 

3,490

3,490

3,400 

2,160 

3,180 

1,920 

1,540 

282 

584 

750 

21,700

21,700

June

282 

273 

267 

269 

256

239 

234 

216 

196 

184

179 

172 

160 

136 

120

117 

111 

104 

98 

83

80 

88 

100 

104 

150

126 

107 

91 

85 

79

July

67 

60 

68 

53

51

50 

46 

44 

41 

40

33 

34 

32 

29 

29

48 

125 

160 

301

584

298 

216 

136 

180 

193

151 

122 

106 

82 

67 

56

Aug.

48 

42 

37 

35 

32

34 

33 

51 

97 

91

70 

55 

53 

58 

77

442 

509 

362 

276 

247

750 

750 

450 

307 

507

213 

181 

167 

274 

343 

236

Minimum Mean

48 74-5 

66 105 

134 553

8 202

334 839 

508 953 

513 1,104 

351 743 

291 67S 

79 157 

29 114 

32 214 

58 1,299

29 566

Sept.

874 

368 

253 

200 

167

151 

138 

132 

130

117

104 

91 

88 

90 

85

83 

82 

79 

66 

61

61 

68 

68 

63 

67

66 

63 

493 

21,700 

13,000

Run-off In 

acre-feet

4,580 

6,260 

33,980

146,400

51,570 

52,910 

67,880 

44,190 

41,660 

9,330 

7,040 

13,140 

77,320

409,900

Dec. 31 (5 p.m.) 4,410 aec.-ft.j Mar. 16 (4:15 p.m.) 3,510 aec.-ft.j July 20 

sec. -ft.} Sept. 29 (2 a.m.) 17,700 see. -ft. j Sept. 29 (11 a.m.) 41,700 soc.-ft.; 

n.) 26,300 sec. -ft.
240 GILA RIVER BASIN

Gila River at New Mexico-Arizona state line, near Virden, N. Mex.

Location.- Water-stage recorder, lat. 32°41', long. 109°03', in NEiNEi sec. 3, T. 9 S., 

R. 32 E., Gila and Salt River meridian (NWiNEi sec. 6, T. 19 S., R. 21 W., New Mexico 

meridian projected west of State line), about 790 feet downstream from State line, 

and 3 miles west of Virden.

Drainage area.- 3,360 square miles.

Records available.- May 1939 to September 1941.

Extremes'.- Maximum discharge during year, 39,500 second-feet Sept. 29 (gage height, 13.64 

feet, from floodmarks), from rating curve extended above 2,900 second-feet by comparison with peak at station below Blue Creek; minimum daily, 5.8 second-feet July 16. 

1939-41: Maximum discharge, that of Sept. 29, 1941; no flow July 8, 10-14, 16, 

1939.

Remarks.- Records fair. Diversions above and below station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

70 

S8 

78 

68 

68

5S 

56 

37 

28 

37

3S 

42 

a 43 

a 42 

a38

34 

31 

32 

21 

18

21 

19 

24 

26 

25

21

18 

25 

28 

23

32

Nov.

31 

30 

3S 

34 

31

34 

38 

68 

84 

54

54 

56 

56 

58 

58

60 

60 

58 

112 

194

178 

146 

140 

230 

226

182 

166 

154 

150 

143

Dec.

136 

136 

146 

143 

136

140 

140 

136 

140 

140

140 

35S 

1,120 

1,030 

696

510 

435 

420 

465 

435

365 

312 

271 

248 

980

1,380 

880 

624 

465 

395 

2,380

Jan.

3,840 

2,180 

1,500 

1,060 

880

784 

674 

580 

510 

455

455 

495 

1,360 

1,460 

1,090

850 

707 

614 

525 

460

425 

385 

350 

320 

316

312 

298 

312 

1,480 

1,500 

1,260

Feb.

970 

790 

680 

597 

540

515 

703 

2,080 

1,540 

1,300

1,230 

1,300 

1,300 

1,120 

940

880 

839 

822 

839 

828

850 

910 

1,060 

1,160 

1,200

1,120 

1,060 

940

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mar 

Api 

Maj 

Jur 

Jul 

Aug 

Sej

1

alendar year 19' 0......................

rater year 1940-4

Peak discharge. -

3,540 sec. -ft.; Sej 

(4 a.m.) 23,300 sec 

a No gage-height 

below Blue Creek.

Mar.

850 

850 

970 

1,030 

970

910 

S80 

790 

722 

641

602 

580 

570 

880 

1,500

2,820 

2,880 

2,080 

1,580 

1,420

1,260 

1,200 

1,160 

1,200 

1,160

1,090 

1,000 

910 

844 

844 

880

Apr.

910 

1,000 

1,090 

1,030 

910

844 

790 

724 

663 

624

619 

602 

619 

614 

586

520 

455 

445 

475 

465

435 

410 

415 

415 

400

490 

1,410 

2,060 

1,610 

1,370

Secondfoot-days

1,189 

2,923 

15,302

63,655.2

27,437 

28,113 

35,073 

23,000 

21,422 

2,741 

2,424.0 

5,604.4 

34,748

199,976.4

May

1,260 

1,610 

1,330 

1,120 

980

950 

1,020 

1,020 

980 

950

914 

908 

S78 

842 

758

680 

615 

540 

495 

448

422 

374 

338 

286 

278

261 

250 

240 

222 

225 

228

Maximum

88 

230 

2,380

2,970

3,840 

2,080 

2,880 

2,060 

1,610 

222 

502 

988 

16,900

16,900

June

222 

207 

183 

198 

171

162 

150 

150 

130 

109

96 

96

77 

57 

49

49 

52 

38 

28 

34

40 

33 

30 

31 

57

81 

68 

57 

45 

41

July

37 

30 

24 

17 

16

18 

28 

19 

17 

15

14 

14 

12 

9.0 

6.2

5.8 

18 

79 

184 

439

502 

243 

156 

116 

123

89 

66 

49 

36 

25 

17

Aug.

15 

14 

13 

31 

14

14 

10 

9.0 

24 

30

20 

10 

8.2 

8.2 

210

347 

458 

314 

288 

198

334 

988 

502 

292 

258

201 

165 

125 

210 

272 

222

Minimum Mean

18 38.4 

30 97 . 4 

136 494

2.3 174

298 885 

515 1,004 

570 1,131 

400 767 

222 691 

28 91.4 

5.8 78.2 

8.2 181 

15 1,158

5.8 548

Sept.

S16 

381 

195 

14S 

123

96 

&8

135 

73 

60

42 

34 

33 

33 

33

32 

32 

 28 

27 

30

30 

23 

16 

15 

17

17 

17 

314 

16,900 

15,000

Run-off in 

acre-feet

2,360 

5,800 

30,350

126,300

54,420 

55,760 

69,570 

45,620 

42,490 

5,440 

4,810 

11,120 

68,920

396,700

Jan. 1 (1 p.m.) 4,240 sec. -ft.; Feb. 8 (11 a.m.) 2,580 sec. -ft.; Mar. 16 (10 p.m 

t. 29 (8 a.m.) 17,000 sec. -ft.; Sept. 29 (2 p.m.) 39,500 sec. -ft.; Sept. 30 

.-ft. 

record; discharge computed on basis of weather records and records for station
01LA RIVER BASIN 241

Diversions from Olla River In DunCan Valley^ N.. Mex.-Arlz.

Duncan Valley lies along Olla River In Hidalgo County, N. Mex., and Oreenlee County, 

Arlz. The part In New Mexico is also known as Vlrden Valley. The valley extends from 

a point about 8 miles east of the State line to the vicinity of Outhrle, Arlz. Ten 

canals, listed In the following table according to their position from east to west, and 

five pumps divert water from 01la River for Irrigation In the valley. The first four 

canals listed divert In New Mexico, the others In Arizona. The Intake of Sunset canal, 

at eastern end of valley, Is 4 miles downstream from the station on 01la River below Blue 

Creek, near Vlrden, N. Mex. The Intake of York canal at the western end Is about 5 miles 

upstream from the station on Olla River near Clifton, Arlz.

Records of dally and monthly diversions are available for Sunset and Moddle canals for 

1914-15 and 1922-31; for Valley and Colmonero canals for J.914-15 and 1923-31; and for 

Duncan canal for 1923-28. Discharge measurements are available for York canal for 1914-15 

and 1923-31.

Records of dally diversions since January 1936, except for Sunset, Moddle, and Shrlver 

canals for 1939-41, have been collected by the 01la Water Commissioner apolnted by the 

United States District Court for Arizona. Water-stage recorders and rectangular sharpcrested weirs were used by the Water Commissioner to obtain records on the canals and 

rated pumps were used to obtain records of pumped water. See pp. 255-260 for records 

of Sunset, Moddle, and Shrlver canals for 1941.

The following tabulations of the annual diversions by each canal and the combined 

monthly diversions by the canals as a group have been compiled and furnished by the 01la 

Water Commissioner.

Annual diversions, in acre-feet, from Qila River in Duncan Valley, N. Mex.-Ariz.

Canal

Miscellaneous direct pumping. .....

Water year 1940-41

46

39 ' 720

Calendar year 1940

79

Combined monthly diversion, in second-feet, from Gila River in Duncan Valley, 

N. Mex.-Ariz., during water year October 1940 to September 1941

Month

May. ................................

Discharge in second-feet

Maximum

93.4 

62.1 

39.2

134

10.3 

46.2 

90.3 

122 

130 

127 

132 

107 

75.5

132

Minimum

43.2 

.6 

6.S

0

.8 

0 

32.S 

60.0 

1S.O 

52.9 

24.7 28.1 * 

0

0

Mean

58.1 

27.8 

24.9

55.0

4.6 

12.3 

58.6 

99.9 

91.5 

101 

53.4 

61.4 

63.0

54.9

Run-off in 

acre-feet

3,570 

1.650 

1,530

39,930

283 

684 

3,610 

5,940 

5,620 

6,040 

3,260 

3.7SO 

3,750

39,720
242 GILA RIVER BASIN 

River near Clifton, Arlz.

Location.- Water-stage recorder, lat. 32°58', long. 109°18', In SEi sec. 25, T. 5 S., R.

 29 E., at highway bridge 7 miles south of Clifton and 5 miles upstream from San Francisco River. Datum of gage Is 3,335.3 feet above mean sea level, datum of 1929, 

(unadjusted).

Drainage area.- 4,040 square miles.

Records available.- March 1928 to October 1933, May 1935 to September 1941. November

 lyiO to July 1918 at site 4 miles upstream, published as Glla River at Guthrle, Arlz.

Average discharge.- 11 years (1928-33, 1935-41), 196 second-feet.

Extremes.- Maximum discharge during year, 28,200 second-feet Sept. 29 (gage height, 

iiO.ia feet); minimum, 25 second-feet July 16.

1928-41: Maximum discharge, that of Sept. 29, 1941; minimum not determined, 

probably occurred In 1934; minimum recorded, 9 second-feet July 8, 1939.

Remarks.- Records good except those for periods of no gage-height record, which are

 fair. Diversions for Irrigation above station, which Is below all diversions from 

Glla River above San Francisco River. During the year 52 discharge measurements were 

made.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

SO 

31

Oot.

300 

110 

122 

.104 

96

95 

64 

73 

64 

54

54 

56 

57 

61 

65

64 

57 

54 

52 

47

44 

44 

42 

44 

45

49 

47 

44 

51 

51 

4S

Nov. -

51 

54 

56 

61 

63

62 

64 

70 

126 

107

101 

103 

101 

103 

93

96 

99 

101 

202 

165

179 

171 

160 

179 

200

191 

179 

174 

167 

165

Dec.

162 

160 

156 

160 

158

16O 

15S 

151 

147 

160

141 

22S 

834 

1,220 

70O

500 

400 

341 

394 

426

3S4 

309 

279 

270 

712

1,280 

914 

655 

550 

535 

1,910

Jan.

3,680 

2,200 

1,420 

1,030 

777

688 

600 

520 

490 

470

439 

454 

624 

1,220 

990

S4O 

722 

618 

550 

480

440 

410 

394 

352 

347

344 

338 

394 

1,050 

1,400 

1,300

Feb.

1,040 

S20 

722 

635 

583

533 

684 

1,920 

1,600 

1,400

1,280 

1,300 

1,240 

1,080 

945

820 

780 

780 

760 

740

722 

760 

922 

1,010 

1,040

990 

900 

7SO

Month

Oct

HOT)

Dec 

C

Jan 

Fet 

Mar 

Apr 

Maj

JUD

Jul 

Aug 

Sej

n

alendar year 194 0.... ..................

ater year 1940-4

liar.

705 

6SS 

780 

SSO 

800

74O 

6SS 

635 

583 

517

470 

439 

439 

635 

1.28O

2,170 

2,800 

2,020 

1,660 

1,290

1,140 

1,060 

1,060 

1,110 

1,120

1,O60 

945 

S40 

740 

705 

705

Apr.

74O 

780 

900 

900 

7SO

705 

670 

618 

600 

566

566 

550 

550 

566 

533

501 

486 

454 

470 

470

454 

409 

366 

338 

312

389 

896 

1,670 

1,430 

1,140

Secondfoot-days

2,178 

3,643 

14,554

65,881

25,781 

26,786 

SO, 604 

19,809 

19,567 

3,548 

3,052 

6,394 

29,179

185, 095

May

1,010 

1,300 

1,250 

980 

870

620 

860 

680 

880 

820

820 

820 

SOO 

760 

705

635 

583 

517 

470 

454

409 

409 

380 

330 

310

282 

265 

256 

240 

228 

224

Maximum

300 

202 

1,910

2,900

3,680 

1,920 

2,800 

1,670 

1,300 

234 

763 

852 

19,500

19,500

June

234 

216 

208 

206 

216

193 

182 

171 

171 

155

135 

124 

118 

104 

93

85 

72 

65 

55 

51

55 

53 

47 

66 

71

69 

90 

89 

80 

72

July

65 

56 

51 

43 

41

41 

41 

46 

46 

42

36 

S3 

32 

30 

32

31 

31 

49 

58 

146

763 

437 

190 

140 

120

100 

90 

SO 

70 

60 

50

Minimum

42 

51 

141

19

338 

533 

439 

312 

224 

47 

30 

40 

40

30

Aug.

SO 

SO 

40 

40 

40

40 

4O 

80 

140 

120

100 

90 

70 

50 

140

168 

650 

460 

274 

316

230 

852 

562 

338 

274

230 

190 

160 

130 

200 

270

Mean

70.3 

121 

469

180

832 

957 

987 

660 

631 

118 

98.5 

206 

973

507

Sept.

923 

736 

320 

220 

170

140 

130 

120 

110 

100

90 

130 

100 

80 

70

60 

60 

120 

90 

80

70 

60 

60 

50 

50

40 

40 

60 

5,350 

19,600

Run-off In 

acre-feet

4,320 

7,230 

28,870

130, 600

51,140 

53, 130

60,700 

39,290 

38,810 

7,040 

6,050 

12,680 

57,880

367,100

Peak discharge.- Jan. 1 (10 p.m.) 3,950 sec.-ft.; Mar. 17 (3 a.m.) 3,000 sec.-ft.; Aug. 22 (7:30 

a.m.) 1,600 sec.-ft.; Sept. 1 (12:30 a.m.) 3,200 sec.-ft.; Sept. 29 (11:30 p.m.) 28,200 sec.-ft.; 

Sept. 30 (12 m.) 22,000 sec.-ft.
GILA RIVER BASIN 243

Gila River near Soloaonsville, Ariz.

Location.- Water-stage recorder, lat. 32°52', long. 109°31', in SEtNEi sec. 31, T. 6 S., 

R. 28 E., three-quarters of a mile downstream from Intake of Brown canal, 8 miles 

northeast of Solomonsvllle, and 11 miles downstream from San Francisco River. Datum 

of gage Is 3,065.09 feet above mean sea level, datum of 1929. Prior to Oct. 1, 1932, 

water-stage recorder at same site but at datum 0.89 foot higher, which datum was 1.00 

foot higher than datum prior to'Sept. 13, 1917. February 1932 to December 1940, waterstage recorder at site 3 miles upstream at different datum.

Drainage area.- 7,950 square miles.

Records available.- April 1914 to September 1932, October 1940 to September 1941. February

 1932 to October 1933, May 1935 to September 1940, at site 3 miles upstream and above 

Intake of Brown canal, published as Oila River below Bonlta Creek, near Solomonsvllle, 

Ariz. Records equivalent if Brown canal diversion is included with records for lower 

site; records of combined discharge given herein include that diversion and represent 

flow at site 3 miles upstream.

Average discharge.- 18 years (1921-33, 1935-41), 426 second-feet, including diversion to 

Brown canai.

Extremes.- Maximum discharge during year, 31,900 second-feet Sept. 30 (gage height, 13.43 

feet); minimum daily, 93 second-feet Oct. 24, 25.

1914-41: Maximum discharge, about 100,000 second-feet Jan. 19, 1916, by slope-area 

method; minimum not determined, probably occurred In 1934; minimum recorded, 27 secondfeet July 14, 1939, above Intake of Brown canal.

Remarks.- Records good. Diversions above station for irrigation and mining. No dlversions above station for irrigation In Safford Valley except Brown canal. Combined discharge table on next page computed using discharge at station below Bonlta Creek prior 

to Jan. 1 and sum of discharge at station near Solomonsvllle and station on Srown 

canal beginning Jan. 1.

Cooperation.- Records for Brown canal furnished by Oila Water Commissioner.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

3 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

20

21 

28 

23 

24 

25

26 

27 

23 

29 

30 

31

Oct.

700 

338 

880 

237 

216

207 

136 

131 

164 

145

138 

155 

156 

153 

150

151 

140 

132 

184 

121

110 

104 

102 

93

93

101 

103 

106 

111 

124 

119

Nov.

113 

113 

116 

124 

120

121 

133 

156 

177 

136

164 

164 

164 

162 

162

169 

164 

176 

647 

1,120

579 

418 

393 

471 

426

389 

344 

383 

306 

300

Dec.

234 

277 

268 

268 

262

262 

268 

262 

265 

287

306 

1,600 

2,310 

2,540 

1,530

1,080 

852 

329 

897 

897

806 

696 

606 

567 

5,950

4,080 

2,490 

1,530 

1,230 

1,370 

11,500

Jan.

3,400 

5,110 

2,920 

2,090 

1,580

1,430 

1,340 

1,160 

1,080 

968

912 

1,270 

2,190 

2,330 

1,930

1,580 

1,390 

1,140 

1,06O 

1,OOO

923 

881 

321 

74S 

775

362 

362 

3,490 

5,230 

3,650 

3,020

Feb.

2,270 

1,880 

1,520 

1,320 

1,1SO

1,110 

1,550 

4,720 

3,340 

2,920

2,550 

2,490 

2,570 

2,250 

1,950

1,780 

1,360 

1,320 

1,730 

1,860

2,090 

2,430 

2,720 

2,720 

2,720

3,120 

2,550 

2,35.0

Month

Oct 

»o\ 

Dec

C

Jar 

Pet 

Hai

Api

Jui 

JxJ 

Au« 

Set

1

alendar year 1940 ......................

ater year 194O4

liar.

2,170 

2,130 

2,210 

2,130 

2,070

1,970 

1,880 

1,690 

1,490 

1,420

1,290 

1,230 

1,400 

2,350 

3,190

9,430 

6,960 

5,050 

3,960 

3,440

3,830 

2,320 

2,550 

2,590 

2,510

2,390 

2,150 

1,970 

1,930 

1,900 

1,930

Apr.

1,990 

2,090 

2,250 

2,250 

1,930

1,860 

1,760 

1,590 

1,520 

1,420

1,450 

1,350 

1,420 

1,420 

1,340

1,250 

1,190 

1,140 

1,140 

1,120

1,060 

991 

923 

862 

831

1,430 

3,640 

3,360 

3,540 

3,120

Secondfoot -days

5,240 

8,390 

46,669

151,477

62,192 

63,420 

66,480 

51,657 

52,160 

3,656 

6,806 

13,642 

36,611

445,923

Hay

2,720 

3,780 

3,340 

2,720 

2,550

2,410 

2,330 

2,310 

2,330 

2,250

2,210 

2,170 

2,090 

1,950 

1,780

1,520 

1,400 

1,280 

1,120 

1,050

946 

892 

913 

1,010 

882

808 

743 

721 

682 

642 

607

Maximum

700 

1,120 

11,500

11,5OO

3,400 

4,720 

9,430 

3,860 

3,730 

572 

911 

1,950 

22,OOO

22,000

June

572 

641 

510 

488 

465

444 

415 

379 

357 

337

299 

270 

252 

229 

204

192 

139 

136 

155 

150

145 

145 

140 

140 

239

321 

270 

286 

210 

136

July

170 

16O 

153 

142 

188

122 

113 

115 

120 

115

110 

110 

106 

104 

112

156 

217 

200 

212 

277

632 

911 

438 

394 

354

272 

222 

19S 

170 

140 

188

Minimum

93 

113 

262

39

743 

1,110 

1,280 

331 

607 

140 

104 

109 

142

93

Aug.

116 

113 

109 

150 

173

229 

208 

265 

301 

263

256 

233 

191 

137 

303

510 

1,950 

1,030 

610 

674

596 

988 

390 

723 

493

426 

346 

293 

264 

376 

371

Mean

169 

830 

1,505

415

2,006 

2,265 

2,S64 

1,722 

1,682 

28S 

220 

440 

1,287

1,222

Sept.

354 

948 

580 

404 

310

268 

233 

888 

804 

188

164 

149 

197 

841 

248

804 

173 

1S4 

194 

194

240 

289 

233 

188 

156

144 

142 

972 

8,160 

22,000

Run-off in 

acre-feet

10,390 

16,640 

92,570

300,400

183,400 

125,300 

175,500 

102,500 

103,500 

17,170 

13,500 

87,06O 

76,580

884,600

Peak discharge.- Dec. 25 (10:30 a.m.) 12,000 sec.-ft.; Dec. 31 (6:30 a.m.) 17,600 sec.-ft.; 

Jan. 28 (6:45 p.m.) 3,140 sec.-ft.; Mar. 15 (11 p.m.) 12,300 sec.-ft.; Sept. 29 (2:30 p.m.) 10,900 

sec.-ft.; Sept. 30 (3:20 a.m.) 31,900 sec.-ft.

Hote.- Discharge Oct. 1 to Dec. 31 computed by subtracting flow of Brown canal from flow at sits 

below Bonlta Creek, 3 miles upstream.
244 GILA RIVER BASIN

Combined discharge, In second-feet, of Olla River near Solomonsvllle'and Brown canal near 

Solomonsvllle, Arlz., water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21

QQ

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

700 

338 

280 

237 

216

213 

190 

181 

164 

148

142 

156 

156 

153 

153

153 

140 

132 

124 

121

111 

106 

103 

98 

98

101 

103 

106 

111 

124 

119

NOT,

113 

113 

116 

124 

126

129 

137 

156 

180 

187

164 

164 

164 

162 

162

159 

164 

176 

647 

1,120

579 

418 

393 

471 

426

389 

344 

323 

300 

300

Dec.

284 

277 

268 

268 

262

262 

268 

262 

265 

287

306 

1,600 

2,810 

2,340 

1,530

1,080 

852 

829 

897 

897

806 

696 

610 

568 

5,950

4,080 

2,490 

1,530 

1,230 

1,370 

11,500

Jan.

8,400 

5,110 

2,920 

2,090 

1,580

1,430 

1,340 

1,160 

1,080 

968

912 

1,270 

2,190 

2,330 

1,930

1,680 

1,390 

1,140 

1,060 

1,000

923 

881 

821 

748 

775

862 

862 

3,490 

5,280 

3,650 

3,020

Feb.

2,270 

1,880 

1,520 

1,320 

1,180

1,110 

1,550 

4,720 

3,940 

2,920

8,550 

2,490 

2,570 

2,250 

1,960

1,780 

1,860 

1,820 

1,780 

1,860

2,090 

2,430 

2,720 

2,720 

2,720

3,120 

2,550 

2,350

Month

Oct

NOTI 

Dec

C

Jar 

Fel 

Mar 

Api 

Maj 

Jur 

Ju3 

Aug 

Set

VI

alendar year 19' 0...... ................

ater year 1940-4 1 .

Mar.

2,170 

2,130 

2,210 

2,130 

2,070

1,970 

1,880 

1,690 

1,490 

1,420

1,290 

1,280 

1,400 

2,350 

8,190

9,430 

6,960 

5,050 

3,960 

3,440

3,240 

2,830 

2,560 

8,610 

2,530

2,410 

2,160 

1,980 

1,940 

1,920 

1,950

Apr.

2,010 

2,100 

2,260 

2,270 

1,950

1,880 

1,800 

1,620 

1,560 

1,460

1,490 

1,380 

1,430 

1,440 

1,360

1,270 

1,200 

1,150 

1,150 

1,130

1,060 

996 

938 

867 

836

1,440 

3,540 

3,860 

3,540 

3,120

Secondfoot-days

5,277 

8,412 

46,674

152,562

62,192 

63,420 

88,640 

52,107 

52,260 

8,875 

7,028 

13,915 

38, 8ll

447,611

toy

2,720 

3,790 

5,350 

2,720 

2,560

2,420 

2,340 

2,310 

2,330 

2,250

2,210 

2,170 

2,090 

1,960 

1,790

1,530 

1,400 

1,280 

1,120 

1,050

946 

896 

924 

1,010 

883

805 

750 

721 

682 

643 

610

Maximum

700 

1,120 

11,500

11,500

8,400 

4,720 

9,430 

3,860 

3,790 

575 

927 

1,960 

22,000

22,000

June

575 

543 

511 

490 

470

451 

422 

386 

367 

350

312 

284 

264 

242 

216

202 

197 

192 

160 

155

150 

150 

145 

145 

246

328 

278 

233 

218 

193

July

177 

166 

159 

147 

133

127 

122 

118 

122 

117

112 

112 

108 

106 

113

156 

223 

209 

222 

288

643 

927 

456 

412 

368

281 

231 

207 

179 

150 

137

Minimum

98 

113 

262

39

748 

1,110 

1,280 

836 

610 

145 

106 

117 

142

98

Aug.

124 

181 

117 

155 

174

229 

208 

271 

311 

272

265

241 

198 

194 

310

618 

1,960 

1,030 

614 

685

605 

998 

900 

734 

514

448 

365 

309 

277 

387 

381

Mean

170 

280 

1,506

417

2,006 

2,265 

2,859 

1,737 

1,686. 

296 

227 

449 

1,294

1,226

Sept.

865 

955 

597 

404 

310

268 

233 

222 

207 

191

174 

159 

209 

264 

261

817 

187 

199 

809 

207

246 

229 

836 

192 

160

145 

142 

973 

8,160 

22,000

Run-off In 

acre -feet

10,470 

16,680 

92,580

302,600

123,400 

125,800 

175,800 

103,400 

103,700 

17,600 

13,940 

27,600 

76,980

888,000

Note_,_- Discharge for Oct. 1 to Dec. 31 computed at site below Bonlta Oreek, 3 mils a upstream.
GILA RIVER BASIN 

Diversions from Glla River In Safford Valley, Arlz.

245

Safford Valley lies along Glla River In Graham County, Arlz., extending from the 

vicinity of Bonlta Creek on the east to San Carlos Indian Reservation on the west. 

Twelve canals, listed In the following table in downstream order, and one pump divert 

water from Glla River for Irrigation In the valley. Intake of .Brown canal, at the upper 

end of the valley, Is about three-quarters of a mile upstream from the station on Glla 

River near Solomonsvllle. Intake of Colvln-Jones canal, at the lower end, Is about 20 

miles upstream from station on Glla River near Calva.

Records of monthly diversion for all the canals except Fourness, Fort Thomas, and 

Colvln-Jones are available for 1914-15; records of dally and monthly diversions for all 

the canals except Colvln-Jones are available f,or 1920-31; records for Brown canal are 

available also for water year 1931-32 (Tidwell canal published as Mlchelana canal In 

records for 1914-15 and 1920-31). Records of monthly diversions for all canals are available for 1936-41.

Records of daily diversions since January 1936 have been collected by the Glla Water 

Commissioner, appointed by United States District Court for Arizona. Water-stage 

recorders with Parshall flumes or weirs were used by the water commissioner to obtain 

records of diversion by the canals, and rated pump was used to obtain record of pumped 

water.

The following tabulation of annual diversion by each canal and combined monthly diversion by the canals as a group have been compiled and furnished by Glla Water Commissioner.

Annual diversions, in acre-feet, from Qila River In Safford Valley, Arlz.

Canal

Miscellaneous direct pumping. .

Total.......................

Water year 1940-41

512

32

151,300

Calendar year 1940

5,800

9,340

35

99,690

Combined monthly diversion, in second-feet, from Qlla River In Safford Valley, 

Arlz., during water year October 1940 to September 1941

Month

Calendar year 1940......

May.......................

Water year 1940-41......

Maximum

436

VQO

678

Minimum

.3

9 0

228

3.5

Mean

1 19

138

499 v-|Q

209

Run-off In 

acre-feet

99,690

916

IS 570

151,300
246 GILA RIVER BASIN

Glla River at Calva, Arlz.

Location.- Water-stage recorder, lat. 33°11', long. 110°13', In sec. 5, T. 3 S., R. 21 

E., unsurveyed, on San Carlos Indian Reservation, at railroad bridge at head of San 

Carlos Reservoir, li 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 1941.

Average discharge.- 12 years, 348 second-feet.

Extremes.- Maximum discharge during year, 14,300 second-feet Jan. 2 (gage height, 9.44 

feet); minimum, 16 second-feet Aug. 14.

1929-41: Maximum discharge, 21,500 second-feet Feb. 12, 1932 (gage height, 9.7 

feet); no flow on several days 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 Solomonsvllle and at 

Kelvin.

Remarks.- Records good except those above 10,000 second-feet, which are fair, and those 

 ror period Oct. 17-20, which are poor. Large diversions above station for Irrigation. 

During the year 53 discharge measurements were made.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

5

6 

7 

3 

9 

10

11 

12 

15 

14 

15

16 

17 

IS 

19 

20

21 

22 

25 

24 

25

26 

27 

28 

29 

50 

51

Oct.

670 

410 

251 

195 

155

91 

91 

37 

76 

53

44 

54 

52 

51

40

51 

20 

20 

20 

20

28 

40 

42 

56 

54

28 

29 

51 

54 

53 

59

Nov.

42

45 

5S 

71 

74

82 

32 

72 

SO 

77

95 

102 

103 

110 

115

108 

110 

140 

505 

972

707 

459 

570 

576 

419

353 

550 

315 

290 

264

Dec.

259 

264 

263 

227 

242

258 

242 

227 

220 

238

251 

529

2,170 

2,460 

1,760

1,160 

921 

776 

766 

735

746 

689 

574 

570 

1,760

4,820 

5,670 

2,120 

1,410 

1,740 

6,200

Jan.

3,700 

12> 100 

4,960 

2,970 

2,260

1,S70 

1,670 

1,440 

1,280 

1,160

1,090 

1,180 

1,650 

2,440 

2,440

1,980 

1,580 

1,250 

1,150 

1,050

972 

957 

377 

845 

322

814 

830 

957 

5,460 

4,950 

3,550

Feb.

2,S60 

2,520 

1,SOO 

1,510 

1,560

1,260 

1,440 

5,450 

4,700 

5,030

2,650 

2,400 

2,520 

2,500 

2,260

2,050 

1,870 

1,910 

1,920 

1,960

2,050 

2,540 

2,650 

2,360 

2,970

5,030 

5,030 

2,540

Month

Dot 

No\ 

Dec

C

Ja» 

Fel 

Mar 

Api

Jun 

Jul 

Aug 

Sej

HI

alendar year 194 0..... .................

at::::::::::::::::::::::::::::::::::::

ater year 1940-4 ]_

Mar.

2,260 

2,110 

2,150 

2,240 

2,140

2,000 

1,960 

1,840 

1,630 

1,490

1,350 

1,260 

1,260 

1,620 

4,200

7,850 

11,500 

6,980 

4,540 

5,420

2,970 

2,970 

2,650 

2,610 

2,590

2,440 

2,260 

2,090 

1,910 

1,530 

1,510

Apr.

1,410 

1,450 

1,560 

1,720 

1,680

1,510 

1,400 

1,520 

1,210 

1,090

1,060 

1,060 

1,080 

1,130 

1,100

1,110 

1,060 

1,000 

1,000 

991

946 

911 

845 

798 

754

964 

1,950 

5,640 

5,640 

2,970

Secondfoot -days

2,715 

6,914 

38, 232

111,078

75,124 

67, 550 

89,010 

42,589 

48, 697 

4,351 

2,456 

9.931 

18,245

405, 442

May

2,610 

2,830 

5,420 

2,650 

2,200

2,070 

2,150 

2,260 

2,500 

2,200

2,110 

2,050 

1,930 

1,820 

1,680

1,550 

1,570 

1,210 

1,060 

957

S45 

740 

693 

1,410 

1,020

822 

634 

593 

545 

499 

444

MaxlwuBi

670 

972 

6,200

6,200

12, 100 

4,700 

11,500 

5,640 

5,420 

402 

574 

2,050 

7,110

12,100

June

402 

386 

547 

505 

265

220 

204 

135 

169 

166

162 

147 

147 

147 

129

109 

99 

89 

74 

68

59 

57 

55 

52 

62

50 

44 

59 

59 

44

July

39 

56 

57 

54 

51

50 

29 

27 

26 

24

23 

22 

22 

21 

20

19 

30

eo

52 

33

29

160 

505 

236 

175

154 

574 

129 

96 

65 

52

Minimum

20 

42 

220

0

S14 

1,260 

1,260 

754 

444 

44 

19 

19 

39

19

Aug.

57 

51 

29 

46 

24

22 

20 

157 

77 

156

107 

24 

19 

51 

50

55 

2,050 

1,360 

771 

495

607 

412 

709 

586 

465

525 

223 

186 

144 

122 

109

Mean

87.5 

230 

1,235

303

2,425 

2,405 

2,371 

1,413 

1,571 

145 

79. S 

520 

608

1,111

Sept.

124 

433 

504 

505 

220

1 166 

128 

96 

71 

52

48 

59 

46 

153 

126

119 

106 

86 

111 

62

74 

65 

153 

177 

181

112 

59 

1,970 

5,570 

7,110

Run-off In 

acre-feet

5,530 

15,710 

75,950

220, 500

149,000 

135, 500 

176,500 

84,080 

96,590 

8,630 

4,870 

19,700 

56,190

804,100
QILA RIVER BASIN 247

San Carles Reservoir at Coolidge Dam, Ariz.

Location.- Water-stage recorder, lat. 33°10'30", long. 110°31'45", in NWi sec. 17, T. 3

 8., R'. 18 E., unsurveyed, at Coolidge Dam on alia River. Datum of gage is at mean 

sea level (Indian Irrigation Service bench mark).

Drainage area.- 12,890 square miles. 

Records available.- November 1928 to September 1941.

Extremes.- Maximum contents during year, 742,800 acre-feet May 27 (elevation, 2,497.13

 reetJT minimum, 1,030 acre-feet Oct. 31 (elevation, 2,383.86 feet).

1928-41: Maximum contents, those of May 27, 1941; minimum (since appreciable storage was attained in 1929), 396 acre-feet July 23, 1939 (elevation, 2,383.33 fe'et).

Remarks.- Reservoir is formed by concrete multiple-dome dam; dam completed Oct. 25, 1928,

 storage began Nov. 15, 1928. Total usable capacity, about 1,200,000 acre-feet between 

elevations 2,383.0 feet (sill of outlet gates) and 2,523.0 feet (top of automatic 

spillway gates in raised position) above mean sea level. Dead storage below elevation 

2,383.0 feet, 10,350 acre-feet according to 1937 survey. Figures given herein represent usable contents. Water is used for irrigation of San Carlos project and for power 

development, dependent on irrigation demands.

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

{Below 2,460 feet, prepared on basts of 1937 surrey by Soil Conservation Service; above 2,460 

feet, prepared on basis of 1915 survey by the Indian Irrigation Service, adjusted by the Oeologlcal Survey for loss In capacity as shown by the 1937 survey at 2,460 feet)

2,383

2,365

2,390

2,395

2,400

2,450

9,620

18,270

28,520

2,405

2,410

2,420

2,430

2,440

41,050

55,600

88,400

132,800

188,800

2,450

2,460

2,470

2,480

2,490

257,100

337,700

427,400

529,000

649,100

2,500 784,300

2,510 939,800

2,520 1,110,000

2,523 1,163,000

Usable contents at 12 p.m., In acre-feet, water year October 1940 to September 1941

D«y

1

2

S

4

6

6

7

a

9

10

11

18

13

14

15

16

17

18

19

SO

21

22

23

24

26

26

27

28

29

SO

31

Oot.

4,430

5,250

5,430

5,430

5,350

5,180

4,940

4,700

4,400

4,210

5,950

3,680

3,390

3,080

2,770

2,460

2,180

1,870

1,600

1,440

1,300

1,240

1,200

1,160

1,130

1,100

1,080

1,060

1,060

1,060

1,060

Nov.

1,070

1,100

1,130

1,180

1,250

1,320

1,370

1,410

1,440

1,440

1,520

1,590

1,660

1,710

1,750

1,820

1,880

2,660

5,820

8,540

10,400

11,300

11,800

12,300

12,800

13,300

13, 700

14,200

14,700

15,000

-

Dec.

15, 200

15,500

15, 800

16,000

16,400

16,900

17,300

17, 800

18, 100

18, 100

18,400

19,600

24,900

29,800

33, 100

35, 200

36,800

38,300

39,700

41,000

42,300

43,400

44,400

46, 400

57, 600

66,500

74,600

78, 100

80, 600

88,000

113,300

Jan.

129,700

150, SOO

162, 300

168,200

172,500

176, 100

179,100

181,700

184,100

186,100

190, 600

196, 500

200,700

205, 400

210,200

214, 100

217, 600

220,200

222,600

224,800

226,800

228,500

230,200

232,000

236, 100

238, 800

240,900

245,900

255,900

266,000

272, 500

Feb.

277,700

281,-COO

284,900

2S7, 600

290, 200

292,600

299,800

307, 200

316,400

322,400

327,300

331,700

336,100

340,400

344, 200

347,700

350,800

353,900

357,400

361. 000

364, 600

368,700

373,900

379,400

388,900

395,900

401,600

405,900

-

Mar.

409,700

413, 000

416,500

420,300

423,900

427, 400

430, 700

433,700

436,300

438,700

441, 100

444,900

454,700

480.600

512, 400

530,500

551,200

564,400

572,900

579,500

585,200

590, 100

594,400

598, 400

602,300

606, 10O

609,600

612,700

615, 100

617,700

620,000

Apr.

622,300

625,200

629,500

633,300

636,600

639,100

641,700

644,000

646,100

647,800

649, 600

651,800

653,600

655, 700

657, 600

659,200

660,700

662,000

663,400

664,800

666,000

667,000

668, 100

669, 100

669,400

670,700

673, 600

679,300

685,200

689, 400

Hay

694,000

698,300

704,000

708, 400

712,000

715,300

71S, 500

721,800

724,900

727, 700

730,000

732,300

734,400

736,000

737, 700

739,300

740, 100

740,200

740, 100

740, 500

740,700

740, 800

740,800

741,800

742, 400

742,400

742.200

741,500

741,400

741,200

740,700

June

739,800

739,300

738,400

737, 400

736,700

735,600

734, 500

733,000

732,000

730,900

729,800

728,800

727,400

726,400

725, 100

723,800

722,600

721, 100

719,500

717,800

716,400

715, 000

713, 100

711,400

709,600

707, 600

705, 600

704, 000

702,500

700,300

-

July

699,000

697,400

695,800

694,000

692, 100

690,300

688,600

686, 700

634,900

683, 100

631,400

679,500

677,600

675,800

674,000

672,000

670, 200

668,300

666,800

665,000

662,900

661,000

661,400

661,400

661,100

660, 100

659,100

657, 700

656,300

655,200

653, 800

Aug.

652, 100

650,700

649,300

648,000

646,500

645, 500

643,700

642,500

642,500

643,300

642,800

641,700

640,900

639,500

63S, 600

638,500

641,200

644,300

644,800

644,700

644,300

643,800

643,600

 43,100

642,400

641,400

640,400

63-/,400

637,800

637,000

635,800

Sept.

634,200

633,000

632,200

631,100

630,000

628,700

627, 100

625,700

624, 400

623,000

621, 500

619,600

619,000

618,200

617,700

617,100

616, 200

615,200

615,100

614,300

612,800

611,700

610,500

609,500

608,600

607,700

607,200

618,200

629,600"

642,400

-

Note.- Contents are those at 12 p.m. of date shown.
243 01 LA. RIVER BASIN

Gila River below Coolidge Dam, Ariz.

Location.- Water-stage recorder and Parshall flume, lat. 33°10'15", long. 110°31'45", 

in SWt sec. 17, T. 3 S., R. 18 E., unsurveyed, 2,200 feet downstream from Coolidge 

Dam. Datum of gage is 2,309.94 feet above mean sea level (Indian Irrigation Service 

bench mark).

Drainage area.- 12,890 square miles.

Records available.- April 1914 to September 1941. July 1899 to November 1905, at site 8 

miles upstream, below mouth of San Carlos River. August 1910 to February 1911, at 

site 9 miles upstream, above mouth of San Carlos River.

Average discharge.- 14 years (1914-28) 636 second-feet (unregulated); 13 years (1928-41) 

276 second-feet (regulated).

Extremes.- Maximum discharge during year, 1,110 second-feet July 22 (head on flume, 4.17 

reet); minimum daily, 1 second-foot Dec. 6-8.

1914-28 (unregulated): Maximum discharge, 130,000 second-feet Jan. 20, 1916, computed on basis of peak discharge at Solomonsville and at Kelvin; no flow for several 

periods.

1928-41 (regulated): Maximum discharge, 1,240 second-feet July 31, 1937 (head on 

flume, 4.35 feet); no flow on several days in most years.

Remarks.- Records excellent. Crest width of Parshall flurae, 30 feet. Large diversions 

above San Carlos Reservoir. Flow regulated at Coolidge Dam since Nov. 15, 1928. 

Flow varying between about half a second-foot and 2 second-feet from warn spring between dam and gage (see list of miscellaneous discharge measurements) included In 

records.

Discharge, In second-feet, water year October 1940 to September 1941

Da*

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

IB 

13 

14 

15

16 

.17 

18 

19 

20

21 

22

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

96 

153 

162 

186 

203

200 

19S 

1S4 

177

177

166 

149 

149 

149 

141

139 

137 

135 

110

as

68 

58 

52 

48 

43

33 

37 

34 

33 

31 

31

Nov.

31 

32 

34 

38 

44

51 

57 

62 

65 

65

6S 

74 

78 

36 

91

94 

98 

77 

2 

4

5 

33 

133 

151 

151

153 

128 

85 

SO 

107

Dec.

129 

129 

127 

127 

45

1 

1 

1 

75 

221

200 

147 

173 

90 

63

126 

93 

4fi 

37 

101

103 

105 

110 

114 

53

36 

18 

IS 

36 

55 

58

Jan.

25 

41 

37 

35 

31

28

84 

26 

11 

25

11 

11 

12 

12 

12

12 

12 

12 

12 

12

12 

12 

12 

22 

14

14 

14 

29 

14 

14 

12

Feb.

7 

12 

13 

13 

13

14 

14 

14 

14 

14

14 

14 

14 

14 

14

15 

13 

17 

31 

15

15 

15 

15 

15 

15

15 

14 

14

Month

0

Jan 

Pet 

liar 

Apr 

Bay 

Jun 

Jul 

Aug 

Sep

oh. ....................................

y...... ................................

Water year 1940-4

Mar.

14 

14 

10 

2 

2

2 

2 

2 

2 

2

2 

2 

3 

3 

3

2

a 

a

2 

2

2 

7 

64 

47 

3

3 

3 

4 

4 

4 

90

Apr.

166 

116 

87 

35 

2

2 

2 

2 

2 

2

120 

153 

99 

17 

4

4 

4 

63 

78 

68

83 

132 

160 

198 

245

282 

285 

311 

382 

393

Secondfoot -days

3,569 

2,182 

2,653

72, g!4

630 

412 

306 

3,497 

15,630 

20,387 

25,150 

17, 781 

16,555

108, 757

May

390 

185 

204 

300 

305

305 

329 

351 

359 

442

539 

574 

594 

584 

519

557 

630 

59S 

634 

638

653 

598 

630 

627 

602

612 

630 

591 

539 

539 

572

Maximum

203 

153 

221

616

84 

31 

90 

393 

653 

824 

999 

788 

772

999

June

630 

623 

616 

612 

623

620 

620 

563 

602 

594

588 

598 

616 

566 

594

652

652 

690 

756 

760

752 

756 

752 

756 

756

784 

808 

820 

824 

S24

July

824 

S24 

828 

824 

832

S24

aea

828 

832 

S48

S73 

914 

974 

931 

961

944 

956 

965 

952 

961

995 

999 

666 

493 

326

549 

717 

717 

686 

588 

686

Minimum

31 

2

1

1

11 

7 

2 

2 

185 

563 

326 

39 

104

1

Aug.

776 

776 

764 

675 

649

776 

7S4 

736 

363 

39

S76 

5S4 

58S 

529 

331

122 

107 

191 

423 

496

620 

660 

664 

604 

660

660 

694 

730 

776 

730 

738

Mean

115 

72.7 

85.7

197

80.3 

14.7 

9.9 

117 

504 

630 

811 

574 

552

298

Sept.

772 

736 

717 

721 

721

728 

725 

723 

928 

723

721 

732 

652 

423 

348

4S1 

491 

481 

193 

423

563 

591 

493 

556 

522

532 

591 

808 

104 

208

Run-off In 

Wsre-feet

7,080 

4,330 

6,270

143,800

1,250 

317 

607 

6,940 

31,000 

40, 440 

49,880 

35,270 

32,840

215,700'
OI1A RIVER BASIN 249

Olla River at Kelvin, Arlz.

Location.- Water-stage recorder, lat. 33°06'15", long. 110°58'45", In NWt sec. 12 T. 4 

8.. K "18 E., at Kelvin, 1,000 feet downstream from Mineral Creek, 15 miles downetreai from San Pedro River, and 19 mllee upstream from Ashurst-Hayden Dam. Datum 

of cage is 1, 743. 30 feet above mean sea level, datum of 1929 (levels by Corps of 

Engineers, U. S. Army).

Drainage area.- 18,000 square miles.

Records available.- January 1911 to September 1941.

Average discharge.- 17 years (1911-28) 760 second-feet (unregulated); 13 years (1928-41)

 409 second-feet (largely regulated).

Extremes.- Maximum discharge during, year, 23,300 second-feet Dec 31 (gage Height, 10.06

 minimum, 39 second-feet Nov. 4; minimum dally, 40 second-feet Nov. 5 .

discharge, about 132,000 second-feet Jan. 20, 1916 (gage height, ^

year 40 discharge measurements were made.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

10 

20

21 

22 

83 

24 

85

86 

87 

8S 

80

30 

31

Oct.

135 

122 

183 

187 

225

248 

225

213 

227 

207

102 

167 

169 

160 

155

151 

155 

155 

148 

140

ne

100 

36 

73 

63

67 

60 

48 

44 

44 

44

NOT.

42 

48 

48 

48

40

42

48 

65 

59 

63

63 

70 

78 

80

S3

83 

100 

136 

1,930 

554

143 

SO 

66 

126 

151

160 

173 

164 

126 

118

Dec.

120 

160 

164 

160 

160

120 

76 

50 

48 

51

230 

632 

S34 

504 

230

136 

360 

290 

183 

120

14S 

160 

160 

605 

2,160

683 

242

173 

161 

4,280 

17,600

Jan.

4,630 

1,030 

544

307 

308

260 

230 

260 

196 

155

60S 

916 

675 

382 

322

242 

173 

144 

120 

125

118 

116 

116 

122 

1,040

660 

320 

1,330 

2,100 

1,470 

800

Feb.

630 

370 

274 

236 

210

207 

1,880 

2,400 

1,160 

706

510 

367 

308 

260 

236

210 

213 

207 

322 

413

360 

358 

573

see

1,620

1,250 

747 

460

Month

Oct 

Not

Dec

C

Jar 

Frt

Mai

Api

Maj 

Jur 

Ju3 

Au< 

Sei

1

alendar year 194

'11 

y......................................

ater year 1040-'

liar.

310 

708 

653 

336 

637

384 

403 

306 

236 

207

102 

664 

1,920 

4,400 

7,370

3,430 

1,240 

870 

720 

620

530 

460 

410 

430 

430

370 

340 

310 

290 

260 

230

Apr.

663 

SOS 

883 

643 

499

305 

344 

303 

272 

242

226 

360 

440 

351 

260

221 

200 

194 

216

237

231 

231 

264 

201 

310

374 

418 

 410 

441 

463

Secondfoot-days

4,300 

5,014 

30,964

135,205

20,008 

17,460 

30,007 

11,100 

10,057 

20,571 

28,764 

29,272 

23,166

230,900

May

401 

876 

302 

360 

441

434 

426 

441 

457 

466

678 

643 

601 

691 

691

597 

701 

720 

632 

720

730 

730 

701 

701 

710

601 

601 

710 

634 

624 

615

Maximum

246 

1,980 

17,600

17,600

4,630 

2,400 

7,370 

863 

873 

341 

1,970 

2,430 

2,680

17,600

June

632 

601 

691 

672 

653

663 

643 

643 

688 

588

597 

597 

606 

616 

573

597 

663 

662 

701 

720

730 

740 

750 

750 

750

750 

770 

820 

820 

341

July

841 

341 

841 

341 

352

352 

352 

852

333 

330

862 

362 

025 

936 

925

946 

956 

90S 

986 

1,020

1,030 

1,060 

1,870 

1,500 

869

60S 

844 

778 

778 

703 

661

Minimum

44

40 

48

26

116 

207 

102 

194 

380 

678 

60S 

638 

466

40

Aug.

776 

735

see

1,500 

662

1,060 

370 

1,060 

1,300 

2,430

356 

716 

733 

702 

1,160

658 1,640* 

1,330 

689 

661

710 

770 

856 

768 

762

756 

732 

770 

785 

786 

786

Mean

130 

167 

090

370

646 

625 

971 

373 

615 

686 

028 

044 

772

657

Sept.

756

ses

748 

732 

710

718 

705 

696 

844 

602

740 

7«8 

897 897* 

62T

466 

493 

1,260 

920 

495

561 

675 

676 

610 

567

635 

5*9 

2,880 

1,040 

639

Run-off In 

acre-feet

8,660 

0,960 

61,480

268,400

30,600 

34,690 

59 ,700 

22,210 

37,300 

40,800 

57,060 

68,060 

46,930

476,800
250 QUA RIVER BASIN

Qila River at Ashurst-Hayden Dam, near Florence, Ariz.

Location.- Water-stage recorder, lat. 33°06', long. 111°15', in NWi sec. 8, T. 4 S., 

R. 11 E., at Ashurst-Hayden Bam, 10 miles northeast of Florence. Permanent crest of 

dam is 1,563.0 feet, adjustment of 1912, or 1,562.5 feet, datum of 1929, above mean 

sea level. Crest height at times temporarily increased from 0 to 1.0 foot by use of 

flashboards.

Drainage area.- 18,300 square miles.

Records available.- July 1923 to September 1941 (head on crest of dam only).

Extremes.- Maximum head during year, 2.7 feet Bee. 31; no flow over dam greater part of 

year.1923-41: Jfexlmum head, 8.0 feet Sept. 28, 1926; no flow over dam greater part of 

each year.

Remarks.- Figures given herein are daily mean head on dam. Records do not include water 

sluiced through gates in dam or diverted to Florence-Casa Grande canal (see p. 272 ). 

Many other diversions above station for irrigation. Flow regulated at Coolidge Bam, 

except for periods of tributary inflow below that dam. San Pedro River contributes 

major portion of unregulated inflow.

Cooperation.- Water-stage recorder graph prior to Aug. 1 and data on flashboards furnished 

by Olflce of Indian Affairs.

Dally mean head, In feat, water year October 1940 to September 1941

D»y

1

8

S

4

6

6

7

8

9

10

11

12

IS

14

16

16

17

18

19

20

81

22

25

24

26

26

27

28

29

SO

51

Oct. HOT.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0<*)

.55

.33

0

0

0

0

0

0

0

0

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0(«)

0

0

0

0(«)

0

0

0

0

0

0

0

.65

.21

0

0

0

.56

1.93

Jan.

0.50

.19

.22

.05

0

0

0

0

0

0

.20

.14

.04

0

0

0

0

0

0

0

0

0

0

0

.40

.39

.19

.47

.94

.90

.60

Feb.

0.45

.13

0

0

0

0

.57

.OS

.45

.48

.44

.35

.27

.09

0

0

0

0

(*)

.17

.16

.12

.30

.23

.13

.52

.52

.39

_

_

-

Mar.

0.27

.50

.33

.32

.18

.37

.34

.37

.23

.26

.SO

.41

.56

1.13

2.00

1.08

.12

.52

.27

0

0

0

0

0

0

0

0

0

0

0

0

Apr.

0.19

.27

.29

.06

.22

.06

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

.02

0

0

0

-

May

0.11

.19

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

June July

0

0

0

0

0

0

0

0(»)

0

0

0

0

0

0

0

0

0

0

0

0

0

.67

.43

- .10

0

0

0

0

0

0

Aug.

0

0

0

.22

0

.24

.09

.20

.37

.57

(*)

(«)

0

.07

.27

.06

.46

.32

( n>

0

0(«)

<n>

0

0

0

0

0

0

0

0

Sept.

0

(«)

0

0

0

0

0

0

#0

0

0

.03

.03

(»)

0( '!u

.30

.04

, 0

0

0

0

0

0 i

0

.69

.27

.02

~

* Flow over crest of dan for short time, but mean head for day was less than 0.01 foot. 

Hote.- Water below crest of dam during months left blank and on days shown by zero.
CJILA RIVER BASIN 251

Oila River near Laveen, Ariz.

Location.- Water-stage recorder above concrete diversion dam, lat. 33°15', long. 118°10', 

in SWiNWi sec. 16, T. 2 S., R. 2 E., on Oila River Indian Reservation, at highway 

bridge, li miles south of Komatke, 8 miles south of Laveen, and 8 miles upstream from 

Santa Cruz River.

Drainage area.- 20,200 square miles.

Records available.- January 1940 to September 1941.

Extremes.- Maximum discharge during water year, 11,900 second-feet Jan. 2 (gage height, 

9.33 feet); minimum, 3 second-feet Sept. 6.

1940-41: Maximum discharge, that of Jan. 2, 1941; no flow at times during summer 

of 1940.

Remarks.- Records good above 100 second-feet and fair below. Records include flow over 

dam, through sluice gate in dam, and in bypass channel a quarter of a mile south of 

gage, but do not include flow in Cooperative canal, which diverts at dam (see table 

at end of report for miscellaneous canal measurements). Large diversions above 

station for irrigation. Flow partly regulated by San Carlos Reservoir (see p. 347 ).

Discharge, in second-feet, water year October 1940 to Septeober 1941

Day

1 

S 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17ie

19 

20

81 

82 

23 

24 

85

86 

27 

28 

29 

SO 

31

Oct.

10 

10 

9 

8 

9

9 

10 

10 

11 

11

11 

12 

12 

12 

13

13 

13 

13 

13 

13

13 

13 

12 

12 

12

13 

13 

13 

13 

13 

13

HOT.

13 

13

13 

13 

13

13 

12 

13 

12 

12

12 

12 

12 

IE 

11

11 

11 

12 

289 

1,380

215 

34 

24 

22 

22

17 

16 

16 

15 

15

Dec.

15 

15 

15 

15 

15

15 

15 

15 

15 

16

17 

16 

17 

17 

17

17 

18 

17 

17 

17

17 

17 

17ie

150

1,110 

260 

100 

55 

50 

1,170

Jan.

2,150 

8,700 

1,900 

301 

203

159 

112 

92 

80 

71

66 

61 

553 

209 

80

59 

47 

37 

30 

26

24 

24 

24 

24 

24

24 

42

28 

238 

1,240 

891

Feb.

416 

181 

122 

92

32

75 

74 

974 

1,530 

422

292 

196 

109 

62 

52

45 

33 

34 

34 

39

39 

26 

26 

30 

276

1,320 

425 

23S

Month

Oct 

No\ 

Dac

C

Jar 

Fet 

Mar 

Apr 

Maj 

Jm 

Ju3 

Aug 

8ej

*

alendar year 194 0......... .............

ater year 1940-4

liar.

142 

100 

142 

116 

90

23S

292

153 

36 

57

53 

53 

195 

1,540 

1,810

2,610 

4,290 

2,550 

TOO 

300

205 

153 

111 

95 

36

72 

67 

57 

53 

63 

48

Apr.

46 

48 

43 

43 

48

44 

44 

39 

39 

30

26 

44 

48 

53 

53

44 

39 

34 

34 

34

30 

30 

30 

30 

26

24 

24 

24 

24 

24

Secondfoot-days

362 

2,285 

3,285

16,030

17,519 

7,249 

16,517 

1,111 

792 

366 

1,118 

5,580 

3,139

59,373

May

24 

26 

26 

30 

30

30 

30 

26 

26 

24

24

26 

26 

24 

26

26 

26 

26 

26 

26

26 

30 

30 

26 

24

24 

22 

22 

24 

20 

16

Maximum

13 

1,380 

1,170

4,180

8,700 

1,530 

4,290 

53 

30 

16 

490 

1,570 

1,290

8,700

June

15 

16 

15 

15 

IS

15 

15 

15 

15 

15

14 

15 

' 14 

14 

14

14 

14 

14 

13 

9

7 

7 

7 

7

S

9 

9 

9 

8 

9

July

9 

6 

7 

7 

7

8 

S 

9 

10 

10

10 

10 

10 

9 

7

7 

8 

8 

7 

7

7 

7 

S 

490 

259

95 

34 

16 

14 

14 

10

Minimum

8 

11 

15

0

24

26 

48 

24 

16 

7 

6 

6 

4

4

Aug.

9 

9 

S 

8 

51

24

107 

94

se

760

1,570 

355 

40 

15 

10

132 

117 

889 

997 

202

30 

25 

15 

15 

10

5 

5

5 

5 

5 

5

Mean

11.7 

76.2 

106

4.4

565 

259 

533 

37.0 

25.5 

18.2 

36.1 

160 

106

163

Sept.

4

4 

4 

4

4

4

4 

6 

6 

6

6 

6 

4

4 

4

5 

5 

5 

592 

526

162 

36 

24 

80 

10

6 

5

6 

1,260 

435

Run-off In 

acre-feet

718 

4,530 

6,520

31,800

34,750 

14,380 

32,760 

2.200 

1,570 

726 

2,220 

11,070 

6,330

117,800

461676 0-42-17
252 GILA RIVER BASIN

Gila River below Gillespie Dam, Ariz.

Location.- Water-stage recorder above left end of Gillespie Dam, lat. 33°14', long.

112b45', in SEjlffii sec. 28, T. 23., R. 5W., 8 miles downstream from Hassayampa River. 

Datum of crest of dam is 753.46 feet above mean sea level (average elevation), datum 

of 1929, and 5 feet above datum of gage.

Drainage area.- 49,600 square miles.

Records available.- August 1921 to September 1941.

Extremes.- Maximum discharge during year, 45,800 second-feet Mar. 16 (height over creat 

or dam, 4.45 feet); no flow for several pe.riods during year.

1921-41: Maximum discharge, 70,000 second-feet Dec. 28, 1923 (height over creat of 

dam, 6.0 feet), by computation of flow over dam; no flow for several periods In each 

year.

Maximum discharge known, 250,000 second-feet (estimated), occurred In February 1891.

Remarks.- Records good except those below 100 second-feet, which are fair, and those for 

period of no gage-height record or no sluicing record, which are poor. Records include 

flow over crest and through sluice gates of Gillespie Dam, but do not include flow in 

Qillespie and Enterprise canals, which divert from river just above dam. Other diversions above station for irrigation. Flow of Gila River and tributaries above thia 

station is regulated by San Carlos Reservoir on Gila River (capacity, about 1,200,000 

acre-feet), by a series of reservoirs on Salt River (capacity, 1,771,000 acre-feet), 

by Bartlett Reservoir on Verde River (capacity, 182,600 acre-feet), and by Lake 

Pleasant on Agua Fria River (capacity, 178,000 acre-feet). For records of combined 

flow of Gila River, Gillespie canal, and Enterprise canal, see table on following page.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

SS 

25 

24 

25

26

27 

28 

29 

30 

31

Oct. NOT.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

537 

a411 

a!66 

a66 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

e200

eSOO 

0700 

e200 

elOO 

elOO 

e200

Jan.

el, 000 

3,660 

3,470 

4,950 

2,010

555 

450 

330 

305 

280

2 SO 

255 

230 

455 

330

255 

20S 

180 

160 

160

160 

120 

100 

80 

120

140 

160 

180 

255 

230 

700

Feb.

700 

455 

355 

230 

140

80 

65 

80 

555 

1,600

1,410 

530 

355 

280 

490

880 

530 

568 

1,520 

1,200

1,080 

1,530 

2,820 

6,490 

5,980

4,750 

5,020 

6,880

Month

Oct 

No\

Dec

C

Jar 

Pet 

Mar 

Apr 

Ha, 

Jur 

Jul 

Aug 

Sej:

H

alendar year 194 0..... .................

il. ....................................

ater year 1940-'

liar.

5,010 

3,520 

3,010 

6,000 

10,000

7,420 

6,500 

5,280 

4,290 

. 2,830

1,870 

1,530 

1,720 

2,240 

4,690

27,600 

29,900 

16,600 

10,400 

5,870

4,390 

5,240 

2,740 

1,950 

1,310

1,010 

790 

610 

505 

405 

405

Apr.

405 

355 

355 

874 

2,700

2,360 

1,910 

1,410 

S20 

580

455 

555 

985 

5,880 

13,700

18,400 

18,600 

22,300 

15,800 

8,580

7,420 

8,790 

3,950 

3,370 

2,960

2,790 

2,280 

2,150 

3,280 

4,190

Secondfoot-days

0 

1,180 

1,800

6,202

21,745 

46,575 

175,635 

153,204 

119,415 

1,209 

311 

2,891 

451

522,414

May

4,090 

3,610 

4,910 

7,340 

9,650

9,750 

8,020 

3,766 

8,960 

9,350

8,860 

5,990 

6,120 

5,450 

3,290

4,140 

3.010 

2,180 

1,600 

1,270

790 

555 

480 

405 

355

330 

280 

255 

205 

205 

£05

Maximum

0 

537 

700

1.540

4,950 

6,880 

29,900 

22,300 

9,750 

240 

220 

795 

377

. 29,900

June

160 

160 

140 

120 

240

95 

50 

50 

65 

65

50 

14 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

2

220 

89 

0 

0 

0

Minimum

0 

0 

0

0

80 

65 

405 

355 

205 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

333

795 

340 

128 

38

20 

17 

65 

415 

532

183 

SS

0 

0 

0

0 

0 

0 

0 

0

Mean

0 

39.3 

58.1

16.9

701 

1,663 

5,601 

5,107 

3,352 

40.3 

10.0 

93.3 

15.0

1,431

Sept.

0 

0 

0

0 

0

0

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

74 

0 

0 

0 

0

0 

0

0 

0 

377

Run-off In 

acre-feet

0

2,340 

3,570

12,300

43,130 

92,380 

344,400 

303,900 

236,900 

2,400 

617 

5,730 

895

1,036,000

a No gage-height record; all discharge through sluice gates and computed by critical depth formula 

from seven observations of depth of water over gate sills.

e No sluicing record; discharge computed on basis of records for Gila River near Laveen, Hassayampa 

River near Morristown, Salt River at Stewart Mountain Dam, Verde River above Camp Creek, near 

McDowell, and Santa Cruz River near Laveen.
GILA. RIVER E&SIN 253

Combined discharge, In second-feet, of Gila River below Gillespie Dam and of Oillespie and 

Enterprise canals at Qilleepie Dam, Ariz., water year October 1940 to September 1941

Day

1 

2 

3 

4

6

6 

7

e

9 

10

11 

IS 

IS 

14 

16

16 

17 

16 

19 

20

21 

22 

83 

24 

25

26 

87 

SB 

89 

SO 

SI

Oct.

53 

46 

48 

52 

91

134 

89 

71 

64 

64

63' 

63 

63 

62 

63

62 

62 

69 

69 

60

60 

61 

69 

59 

56

56 

57 

68 

62 

64 

64

Hov.

61 

68 

62 

65 

63

63 

61 

62 

64 

66

63 

67 

77 

71 

66

64 

64 

66 

69 

74

742 

649 

166 

105 

111

116 

106 

101 

107 

111

Dec.

105 

103 

96 

97 

99

99 

101 

101 

98 

96

97 

99 

106 

104 

96

100 

106 

109 

118 

115

-116 

121 

124 

' 137 

311

300 

743 

287 

214 

161 

267

Jan.

1,100 

3,790 

3,610 

5,100 

2,160

705 

606 

536 

804 

462

442 

417 

399 

633 

519

444 

393 

368 

343 

346

346

305 

284 

263 

299

315 

342 

367 

411 

402 

874

Feb.

663 

626 

530 

406 

319

283 

242 

259 

733 

1,730

1,590 

700 

529 

454 

660

1,040 

697 

737 

1,690 

1,360

1,250 

1,700 

2,990 

6,650 

6,120

4,920 

5,190 

7,050

Month

Oet

Hoi 

Dec

C

Jar 

Pel 

Kai

rJur 

Ju] 

Au| 

Sei

1

alendar year 1940 ......................

mary

 11.....................................

f.

fater year 1940-4

Mar.

5,180 

3,630 

3,180 

6,180 

10,200

7,600 

6,680 

5,460 

4,470 

3,010

2,050 

1,710 

1,890 

2,410 

4,860

27,800 

30,000 

16,700 

10,500 

6,020

4,570 

3,420 

2,860 

2,080 

1,510

1,210 

990 

80S 

637 

497 

596

Apr.

893 

545 

548 

1,060 

2,890

2,550 

2,100 

1,600 

1,010 

769

642 

741 

1,170 

4,060 

13,900

16, 600 

18,800 

22,500 

16,000 

6,760

7,590 

5,970 

4,140 

3,560 

3,150

2,980 

2,470 

2,340 

3,480 

4,380

Secondfoot -days

1,989 

3,527 

4,822

37,750

27,091 

51,348 

178,748 

158,903 

124,966 

6,703 

4,484 

8,104 

4,102

574,787

May

4,270 

3,790 

5,100 

7,530 

9,830

9,930 

3,210 

8,950 

9,150 

9,540

9,040 

6,180 

5,310 

5,640 

3,470

4,330 

3,200 

2,360 

1,600 

1,340

975 

739 

668 

591 

542

584 

479 

457 

408 

406 

407

Maximum

134 

742 

743

1,750

5,100 

7,050 

30,000 

22,500 

9,930 

36S 

406 

996 

560

30,000

June

333 

362 

339 

320 

282

269 

289 

270 886

286

269 

231 

211 

207 

203

199 

197 

194 

192 

186

179 

175 

168 

161 

155

153 

152 

150 

146 

144

July

141 

140 

137 

133 

132

131 

127 

181 

113 

114

115 

116 

111 

106 

107

104 

103 

118 

123 

122

181 

115 

114 

118 

161

406 

285 

201 

195 

187 

168

Minimum

48 

61 

96

27

263 

242 

497 

545 

406 144' 

104 

125 

96

48

Aug.

142 

129 

185 

132 

136

127 

127 

135 

159 

191

535 

996 

539 

330 

241

283 

819 

270 

617 

729

382 

886 

202 

194 

179

158 

140 

133 

128 

129 

131

Mean

64.2 

118 

156

103

874 

1,834 

5,766 

5,297 ' 

4,031 

283 

145 

261 

137

1,575

Sept.

142 

135 

125 

128 

117

113 

106 

103 

97 

96

96 

100 

101 

104 

105

107 

103 

100 

97 

128

267 

189 

171 

140 

119

111 

109 

109 

126 

560

Run-off in 

acre-feet

3,950 

7,000 

9,560

74,880

53,730 

101,800 

354,500 

316,200 

247,900 

13,300 

8,890 

16,070 

8,140

1,140,000
254 GILA RIVER BASIN

Gila River near Dome, Ariz.

Location.- Water-stage recorder, lat. 32°45'30", long. 114°25'15", in SWi sec. 4, T. 8 

 S., R. 21 W., 3 miles west of Dome and 12 miles upstream from mouth. Datum of gage is 

148.18 feet above mean sea level, datum of 1929.

Drainage area.- 58,100 square miles.

Records available.- May 1929 to September 1941. October 1903 to December 1906, at site 

4 miles upstream.

Extremes.- Maximum discharge during year, 14,000 second-feet Apr. 22; maximum gage height, 

14.54 feet Mar. 22; no flow much of year.

1929-41: Maximum discharge, 20,700 second-feet Feb. 15, 1932 (gage height, 16.75 

feet); no flow during part of each year.

Maximum daily discharge, 200,000 second-feet (estimated), Jan. 22, 1916.

Remarks.- Records excellent. Diversions above station for Irrigation. Flow regulated by 

reservoirs above station (see p. 252 ). No regulation below Gillespie Dam. During the 

year 47 discharge neasurements were made.

Discharge, lii second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct. Nov. Dec. Jan.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

80 

171 

6S 

20 

2

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Feb.

Month

Oet 

Not

Dec

C

Jan

Pet 

Mar 

Apr 

May 

Jun 

Jul 

Auj 

8ep

*

alendar year 194 0.......... ............

&::::::::::::::::::::::::::::::::::::

ater year 1940-4 1...... .... ..

Mar.

0 

418 

1,160 

1,400 

1,960

2,170 

1,840 

1,800 

2,170 

2,970

3,280 

3,230 

3,030 

2,680 

2,040

1,560 

1,520 

1,490 

1,660 

3,480

9,880 

12,500 

10,600 

7,040 

4,470

3,280 

2,790 

2,220 

1,700 

1,340 

1,110

Apr.

940 

810 

730 

655 

515

465 

40S 

34S 

309 

647

1,230 

1,340 

1,160 

960 

716

625

445 

408 

3,520 

7,670

10,600 

13,500 

11,800 

8,100 

6,240

4,960 

3,740 

3,150 

2,790 

2,570

Secondfoot -days

0 

0 

0

0

341 

0 

96,838

91,300 

106,484 

2,233 

44 

38 

0

297,278

Bay

2,260 

2,040 

2,360 

2,970 

3,210

2,910 

3,280 

4,790 

6,520 

7,100

6,520 

7,100 

7,500 

7,500 

6,900

5,310 

4,720 

4,300 

3,420 

3,420

2,750 

2,200 

1,760 

1,390 

1,060

805 

640 

542 

472 

395 

340

Maximum

0 

0 

0

0

171 

0 

12,500 

13,500 

7,500 

290 

3 

21 

0

13,500

June

290 

260 

228 

198 

174

157 

132 

112 

95 

84

78 

73 

66 

55 

46

35 

29 

23 

17 

14

12 

10 

8 

7 

6

6 

5 

5 

4

4

July

3 

3 

3 

3 

3

3 

2 

2 

S 

2

2 

2

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

0 

0 

0 

0 

0

Minimum

0 

0 

0

0

0 

0 

0 

309 

340 

4 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

21 

12

2

1 

1 

1 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

0 

0 

0

0

11

0 

3.124 

3,043 

3,435 

74.4 

1.4 

1.2 

0

814

Sept.

Run-off In 

acre-feet

0 

0 

0

0

676 

0 

192,100 

181,100 

211,200 

4,430 

87 

75 

0

589,700
GILA RIVER BASIN 255

Sunset canal, near Virden, N. Hex.

Location.- Water-stage recorder and concrete control, lat. 32°39', long. 108°56', In 

 swtsw* sec. 17, T. 19 S., R. 20 W., about li miles downstream from Intake, .4 miles 

southeast of Virden, and about 12 miles east of Duncan, Ariz.

Records available.- October 1914 to September 1915, July 1922 to September 1931, and 

January 1939 to September 1941 in reports of Geological Survey. January 1936 to 

December 1938 in files of Gila water commissioner, appointed by the United States 

District Court for Arizona.

Extremes.- Maximum discharge during year, 56 second-feet Apr. 4 and June 5; maximum gage 

height, 2.53 feet June 12; no flow at times.

1939-41: Maximum discharge, 66 second-feet July 17, 1939 (gage height, 2.77 feet); 

no flow at times.

Remarks.- Records g5od. Canal diverts from right bank of Gila River in SWiNWt 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 1940 to September 1941

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 

28

26 

27 

28 

29 

30 

31

Oct.

36 

37 

43 

31 

31

28 

23 

29 

32 

21

13 

16 

15 

17 

25

30 

28 

24 

21 

23

25 

23 

24 

18 

17

19 

18 

21 

20 

20 

15

HOT.

16 

16 

16 

21 

24

21 

19 

12 

14 

13

11 

4.1 

2.4 

1.8 

2.9

2.7 

1.8 

.6 

.2 

.6

1.5 

1.9 

1.8 

2.9 

2.7

1.4 

.5 

.7 

.8 

2.9

Dec.

3.0 

2.1 

1.2 

.4 

.8

2.1 

1.8 

.6 

.3 

.3

0 

0 

0 

.9 

1.3

3.7 

2.0 

0 

2.2 

4.1

4.1 

3.9 

2.4 

1.7 

3.9

3.2 

1.4 

1.2 

1.4 

1.8 

1.6

Jan.

0.8 

.S 

.8 

.8 

1.7

1.7 

2.9 

2.5 

2.4 

2.0

4.3 

3.5 

2.2 

2.5 

1.5

.4

2.8 

1.4 

2.4 

1.8

1.4 

.9 

4.4 

5.0 

1.5

1.8 

2.5 

.8 

.3 

.2 

0

Feb.

0 

0 

4.1 

0 

0

0 

0 

0 

0 

0

0 

.2 

0 

2.1 

4.1

3.5 

0 

0 

0 

0

12 

11 

5.2 

13 

IS

12 

22 

26

Month

Oct 

Hoi 

Doc

C

Jar 

Pet 

Max 

Api 

Maj 

Jur 

Ju3 

Aug 

Sej

11

alendar year 194

Fater year 1940-4

Mar.

23 

21 

24 

25 

22

24 

27 

26 

24 

31

32 

24 

23 

15 

1.5

7.9 

14 

17 

17 

21

31 

36 

31 

35 

37

34

34 

39 

40 

36 

40

Apr.

44 

37 

16 

.35 

46

48 

46 

46 

48 

51

54 

52 

52 

49 

45

45 

45 

49 

47 

46

45 

46 

49 

46 

45

31 

31 

35 

33 

26

Second - 

foot-days

743 

217.2 

53.4

8,811.6

58.0 

128.2 

812.4 

1,288 

989.5 

1,378 

760 

813.8 

632.8

7,874.3

May

18 

10 

8.9 

9.9 

19

13 

7.0 

14 

12 

12

22 

33 

42 

49 

49

38 

29 

22 

9.7 

35

54 

51 

48 

51 

46

51 

52 

45 

40 

48 

51

Maximum

43

24 

4.1

58

5.0 

26 

40 

54 

54 

85 

32 

34 

31

55

June

51 

52 

55 

51 

51

51 

49 

48 

45 

46

49 

51 

51 

48 

44

43

48 

51 

51 

48

43

45 

44 

49 

51

51 

33 

27 

26 

26

July

26 

27 

26 

26 

24

22 

20 

19 

19 

19

19 

19 

20 

20 

22

24 

25 

29 

32 

24

15 

20 

22 

32 

32

30 

29 

28 

28 

31 

31

Minimum

13 

.2 

0

0

0 

0 

1.5 

16 

7.0 

26 

15 

3.8 

0

0

Aug.

27 

25 

26 

26 

25

26 

26 

22 

29 

29

30 

31 

30 

31 

29

34 

3.8 

23 

24 

29

24 

23 

27 

23 

22

21 

26 

29 

30 

32 

32

Mean

24.0 

7.24 

1.72

24.1

1.87 

4. S3 

26.2 

42.9 

31.9 

45.9 

24.5 

26.3 

21.1

21.6

Sept.

26 

22 

23 

22 

£4

28 

22 

20 

26 

30

27 

22 

22 

16 

17

21 

24 

31 

28 

23

23 

22 

21 

22 

22

22

22 

7.2 

0 

.6

Run-off In 

acre-feet

1,470 

431 

106

17,470

118 

284 

1,610 

2,550 

1,960 

2,730 

1,510 

1,610 

1,260

15,610
256 GILA RIVER BASIN

Sunset canal above New Mexico-Arizona State line, near Vlrden, N. Hex.

Location.- Water-stage recorder and 3-foot concrete Parshall flume, lat. 32°41', long 

109"02', In NEiSEi sec. 31, T. 18 S., R. 21 W., about a quarter of a inlle east of 

New Mexico-Arizona State line and 2.5 miles west of Vlrden.

Records available.- February 1939 to September 1941.

Extremes.- Maximum discharge during year, 19 second-feet Sept. 7: maximum gage height, 

i.^b reet Aug. 23; no flow at times.

1939-41: Maximum discharge, 34 second-foot Oct. 7 (gage height, 1.85 feet): no 

flow at times.

Remarks.- Records good. Canal diverts from right bank of Glla River In SWiNWi sec. 21, 

T. 19 S., R. 20 W., for Irrigation In Vlrden Valley. Many diversions above and 

below station for Irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

4.8 

6.S 

7.0 

5.0 

5.4

4.6 

1.4 

4.9 

6.5 

5.4

4.1 

6.2 

5.6 

8.0 

7.S

7.8 

4.0 

3.8 

4.1 

S.5

11 

8.0 

7.7 

5.7 

4.S

4.1 

6.2 

7.0 

6.8 

5.0 

4.7

HOT.

1.9 

3.5 

5.9 

6.5 

4.1

6.2 

6.2 

4.4 

7.5 

9.3

9.8 

3.2 

1.7 

.5 

1.3

2.6 

2.3 

.4 

0 

0

.4 

1.0 

1.1 

1.5 

1.6

1.7 

.3 

.1 

.2 

.5

Dec.

1.3 

1.5 

.7 

.4 

0

.4 

.3 

.4 

0 

0

.1 

0 

0 

0 

.4

1.6 

2.7 

.4 

.1 

2.5

2.6 

2.6 

2.3 

1.0 

1.5

2.4 

1.6 

.5 

1.0 

1.1 

2.0

Jan.

0.1 

.5 

.5 

.4 

.9

1.1 

1.7 

2.0 

1.7 

1.2

l.S 

2.3 

1.5 

1.4 

.9

.2 

.4 

.4 

.6 

.9

.5 

.3 

.3

.8 

0

0 

.2 

.4 

0 

0 

0

Feb.

0 

0 

0 

.6 0 '

0 

0 

0 

0 

0

0 

0 

0 

0 

0

2.8 

.3 

0 

0 

0

.6 

1.6 

.8 

2.8 

2.0

3.3 

S.2 

8.7

Month

Oct 

Not 

Dec

C

Jan 

Fet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Se]

ti

alendar year 194 0... ...................

ater year 1940-4

Mar.

8.7 

7.S 

11 

9.7 

8.3

4.2 

5.9 

5.0 

4.1 

8.2

S.7 

9.6 

7.2 

9.6 

.2

1.4 

4.9 

2.5 

4.2 

6.6

6.4 

6.0 

7.9 

6.0 

2.S

2.2 

4.7 

7.7 

7.9 

4.8 

3.3

Apr.

1.0 

1.3 

.1 

3.1 

10

13 

S.O 

8.0 

14 

14

11 

2.9 

1.2 

8.0 

9.4

7.4 

9.1 

13 

8.9 

5.4

2.6 

9.1 

S.4 

9.3 

9.4

10 

9.7 

7.6 

8.2 

7.8

Secondfoot -days

182.7 

S5.7 

31.9

1,481.9

23.0 

31.7 

187.5 

230.9 

159.4 

195.0 

123.8 

156.1 

86.8

1,494.5

May

12 

1.9 

.5 

.2 

5.7

7.0 

1.5 

5.5 

3.0 

.5

2.8 

8.S 

8.7 

3.4 

1.1

0 

.1 

5.5 

8.3 

3.S

9.S 

6.1 

3.4 

1.1 

6.1

9.3 

11 

11 

7.4 

9.1 

4.S

Maximum

11 

9.S 

2.7

16

2.3 

S.7 

11 

14 

12 

12 

11 

14 

15

15

June

0.1 

.3 

7.9 

S.9 

8.6

11 

4.7 

2.5 

1.7 

7.1

8.6 

10 

10 

8.4 

4.4

2.3 

10 

7.9 

10 

9.2

7.5 

1.7 

3.7 

6.6 

11

10 

12 

4.8 

.6 

3.5

July

7.6 

S.4 

10 

2.5 

.5

1.1 

.2 

0 

4.8 

S.2

9.1 

.6 

0 

0 

0

6.7 

11 

8.8 

1.8

.7

0 

0 

0 

0 

8.0

8.6 

6.7 1.4' 

.8 

6.3 

10

Minimum

1.4 

0 

0

0

0 

0 

.2 

.1 

0 

.1 

0 

0 

0

0

Aug.

10 

6.0 

.4 

.3 

0

0 

5.7 

12 

S.4 

1.1

0 

.2 

9.S 

10 

11

5.4 

0 

1.0 

1.1 

2.2

10 

7.7 

9.9 

S.O 

1.3

.9 

.S 

.9 

8.0 

14 

10

Mean

5.S9 

2.86 

1.03

4.05

.74 

1.13 

6.05 

7.70 

5.14 

6.50 

3.99 

5.04 

2.89

4.09

Sept.

6.7 

.4 

0 

0 

0

4.6 

15 

10 

6.8 

3.3

0 

0 

0 

0 

.2

8.2 

7.8 

4.2 

0 

0

0 

0 

0 

0 

2.7

10 

6.9 

.6 

0

0

Run-off In 

acre-feet

362 

170 

63

2,940

46 

63 

372 458 ' 

316 

367 

246 

310 

172

2,960
GILA RIVER BASIN 257

Sunset canal wasteway near Virden, N. Mex.

Location.- Water-stage recorder and 3-foot concrete Parshall flume, lat. 3E°41', long.

 109°02', in NWiSEt sec. 31, T. 18 S., R. 21 W., just below Intake, at New MexicoArizona State line, and 2| miles west of Virden.

Records available.- February 1939 to September 1941.

Extremes.- Maximum discharge during year, 27 second-feet May 1 (gage height, 1.62 feet),

 from rating curve extended above 15 second-feet by logarithmic plotting; no flow at 

times.

1939-41: Maximum discharge, that of May 1, 1941; no flow at times.

Remarks.- Records good. Discharge represents waste from Sunset canal to Oila 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 1940 to September 1941

Day

1

8

34-

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

84 

25

26 

27 

88 

29 

30 

31

Oct.

1.6 

4.7 

3.0 

.2 

1.6

4.1 

.5 

.6 

.8 

4.7

3.6 

S.9 

S.3 

2.1 

7.0

3.4

1.7 

3.2

l.S 

2.1

.4

0 

2.7 

1.4 

1.4

.4 

2.0

2.0 

.3 

.1 

2.6

HOT.

1.7

1.7 

7.0 

6.S 

1.4

8.2

1.1 

3.1 

8.0 

9.7

10 

3.1 

1.6 

.2 

.8

2.0

1.7 

.1 

0 

0

.2

.7 

.8 

.6 

.1

.4

.1 

0 

0 

.4

Dec.

0.4 

.4 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1.0 

2.1 

.3 

0 

8.8

2.3 

2.3 

2.3

.5 

.6

1.9 

1.2 

.2 

.S 

.3 

.3

Jan.

0 

.6 

.3 

0 

0

.6 

1.9 

1.9 

1.4 

1.0

2.1 

2.6 

1.6 

1.1 

.7

.2 

.4 

.4 

.2 

.1

.1 

.1 

0 

.1 

0

0 

.2 

.4 

0 

0 

0

Feb.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1.4 

0 

0 

0 

0

.e

1.6 

.5 

1.6 

1.5

1.7 

2.6

4.8

Month

Dot 

NOT 

Dec

C

Jar 

Pet 

Mai 

Api 

Ha; 

Jur 

Ju3 

Auj 

5ei

1

alendar year 194to..... .................

 11.. ......... .

rater year 1940-'

Mar.

1.4 

1.0 

3.7 

S.O 

8.0

3.3 

4.2 

3.4

3.3 

2.7

.4 

2.9

S.2 

4.5 

.S

1.4 

4.0 

.1 

.2 

.7

1.3 

2.4 

S.S 

3.S 

2.3

l.S 

.S 

.8 

.9 

1.6 

3.3

Apr.

Secondfoot -days

71.5 

86. 2 

19.4

512.1

18.0 

16.5 

80.1 

41.2 

37.2 

27.8 

4.5 

5.7 

3.7

390.8

1.3 

.7 

0 

.7 

1.1

1.2 

.7 

.3

0

.1 

0 

0 

1.2

1.5

.1 

.1 

l.S 

2.S

.6

0 

1.2

1.1 

1.9 

.9

4.3 

5.7 

.7 

6.2 

4.6

May

8.8

1.7 

.1 

0 

3.9

2.0 

1.2 

5.2

.2

.8 

l.S 

.4 

0 

0

a

0 

.2

1.1 

.2

.4

0 

0

.1

1.5

1.5 

2.8 

2.3 

0 

.6 

.3

Maximum

7.0 

10 

2.3

11

2.6

4.8 

8.0 

3.2 

8.2 

S.O 

l.S 

1.3 

1.7

10

June

0 

 8

1.0 

1.5 

.4

.1 

.1 

.1

.8

.8 

1.6 

.4 

.2 

.3

1.6 

5.0 

.3 

.2

.1

.3 

0 

3.4 

1.2 

2.1

1.3 

.8 

0 

.1 

2.8

July

1.5 

.5 

0 

0 

.2

0 

0 

0

0

0 

0 

0 

0 

0

.1

.4

1.2 

0 

.2

0 

0 

0 

0

.1

0 

0 

0 

0 

0 

.2

Minimum

0 

0 

0

0

0 

0 

.1 

0 

0 

0 

0 

0 

0

0

Aug.

0

0 

0 

0 

0

0 

.2

.1 

0 

0

0 

0 

.2

.1 

0

0

.1

.3 

0 

.1

1.3 

.3 

.2 

.7 

.1

0 

0 

0 

.7 

.7 

.6

Bean

2.31 

2.17 

.63

1.40

.58

.59 

8.58 

1.37 

1.80 

.93 

.15 

.18 

.12

1.07

Sept.

1.1 

0

0 

0 

0

.4 

1.7 

» 

0 

0

0 

0 

0 

0

.1

.4 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Run-off In 

acre-feet

142 

129 

38

1,010

36 

33 

169

82 

74 

SS 

8.9 

11 

7.3

775 '
258 QILA FIVER BASIN

Moddle canal near Vlrden, N. Hex.

Location.- Water-stage recorder and concrete control, lat. 32°40', long. 108°59', In

 SWiNWJ sec. 11, T. 19 S., R. 21 W., half a inlle downstream from Intake, H miles 

southeast of Vlrden, and about 3 miles southeast of Duncan, Arlz.

Records available.- October 1914 to September 1915, July 1922 to September 1931, and

 January 1939 to September 1941 In reports of Geological Survey. January 1936 to 

December 1938 In files In office of Gila Water Commissioner, appointed by the 

United States District Court for Arizona.

Extremes.- Maximum gage height during year, 5 feet September 29 (discharge not determinea;; no flow at times.

1939-41: Maximum gage height, that of September 29, 1941; no flow at times.

Remarks.- Records good except those estimated, which are poor. Canal diverts from left

 EanTTof Glla River In NWiSEi sec. 11, T. 19 S., R. 21 W., for irrigation In Vlrden 

Valley. No diversions between intake and station.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

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 

34 

31 

30 

30

27 

27 

23 

- 22 

32

33 

34 

35 

35 

32

31 

29 

25 

2O 

20

21 

22 

23 

28 

28

26 

26 

28 

29 

29 

32

HOT.

33 

33 

33 

32 

31

32 

33 

36 

32 

0

0 

0 

6.4 

18 

18

18 

19 

19 

13 

0

0 

0 

0 

.3 

3.4

10 

10 

10 

10 

9.8

Dec.

9.1 

9.1 

9.4 

9.S 

9.1

8.8

7.8 

7.8 

7.8 

7.5

6.S 

21 

2S 

25 

22

20 

20 

22 

24 

24

22 

20 

19 

17 

22

15 

10 

13 

15le

10

Jan.

1.8 

0 

0 

0 

0

0 

0 

0

0 

0

0 

0 

0 

0 

0

1.4 

2.1 

0 

0 

0

0 

0 

0 

.4 

2.2

6.5 

6.8 

6.3 

10 

9.1 

6.8

Feb.

0.4 

0 

0 

0 

0

0 

1.8 

9.7 

0 

0

0 

0 

0 

.6 

.8

0 

0 

4.3 

15 

15

17 

24 

12 

0 

0

15 

16 

4.0

Month

Oet 

Not 

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Au« 

Set

1

alendar year 19'

ater year!940-4]

liar.

4.3 

12 

27 

28 

18

12 

5.9 

2.2 

l.S 

11

28

30 

31 

36 

30

25 

15 

12 

12 

12

12 

13 

16 

25 

22

17 

10 

4.3 

2.2 

5.7 

11

Apr.

26 

30 

32 

22 

5.4

6.0

SI 

33 

30 

34

36 

40 

40 

40 

40

38 

37 

36 

1.9 

0

0 

20 

28 

36 

36

40 

27 

7.4 

27 

24

Secondfoot -days

866 

459.9 

480

6,751.9

53.4 

135.6 

490.9 

805. 7 

715.2 

623.4 

336.7 

363.1 

566.9

6,116.8

May

17 

16 

5.2 

22 

14

14 

17 

21 

22 

21

23 

26 

28 

28 

23

16 

21 

26 

36 

35

13 

16 

25 

23 

23

2S 

34 

33 

30 

29 

28

Maximum

35 

36 

28

45

10 

24 

36 

40 

36 

45 

42 

43 

70

70

 Tune

27 

29 

35 

33 

25

24 

30 

39 

38 

38

45 

35 

35 

30 

23

28 

29 

26 

23 

19

23 

27 

36 

34 

27

13 

8.4 

12 

16 

16

July

15 1"4 

13 

13 

13

6.4 

0 

0 

0 

0

0 

0 

2.2 

2.7 

1.3

5.7 

14 

32 

42 

26

0 

0 

0 

17 

30

26 

21 

13 

10 

9.4 

10

Minimum

20 

0 

6.8

0

0 

0 

1.3 

0 

5.2 

6.4 

0 

0 

6.6

0

Aug.

7.2 

5.4 

1.4 

1.0 

4.3

2.9 

2.2 

1.4 

16 

17

15 

14 

13 

14 

9.3

26 

0 

0 

0 

24

43 

26 

16 

12 

12

11 

13 

20 

0 

29 

28

Mean

27.9 

15.3 

15.5

18.4

1.72 

4.84 

15.8 

26.9 

23.1 

27.4 

10.9 

12.4 

18.9

16.8

Sept.

22

8.1 

12 

28 

28

26 

17 

17 

19 

£2

24 

22 

22 

25 

18

14 

12 

8.4 

9.8 

13

14 

13 

13 

15 

17

16 

16 

6.6 

a20 

a70

Run-off In 

aore-feet

1.72O 

912 

952

13,410

106 

269 

974 

1,600 

1,420 

1,630 

668 

760 

1,120

12,130

a Ho gage-height record; discharge computed on baaia of records for station downatream and the 

capacity of the canal.
QILA RIVER BASIN 259

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"02', in ffiliSEi sec. 6, T. 19 S., R. 21 W., about SOO feet upstream from New 

Mexico-Arizona State line and about 2f miles west of Virden.

Records available.- February 1939 to September 1941.

Extremes.- Maximum discharge during year, 41 second-feet Aug. 16 (gage height, 1.73 feet); 

no now at times.

1939-41: Maxicium discharge, 60 second-feet Oct. 7, 1939 (gage height, 2.27 feet), 

from rating curve extended above 26 second-feet by logarithmic plotting; no flow at 

times.

Remarks.- Records good. Canal diverts from left bank of Gila River in NWiSEi 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 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7

e

9

10

11 

12 

13 

14 

15

16 

17 

18 

19 

SO

81 

88 

83 

84 

85

26 

27 

SB 

29 

SO 

31

Oct.

5.9 

5.9 

7.7 

6.3 

5.5

e.s

12 

14 

10 

10

10 

S.9 

7.9 

6.9 

9.S

10 

. 9.1 

3.4 

5.3 

9.8

9.8 

9.8 

7.9 

8.1 

9.8

10 

10 

7.7 

6.7 

11 

9.S

NOT.

11 

12 

11 

12 

6.7

3.7 

2.6 

4.6 

0 

0

0 

0 

0 

1.9 

1.6

1.0 

.2 

.3 

.2 

.2

.2

.1 

.1 

.1 

.1

.1 

0 

2.1 

.1 

.1

Dec.

0.1 

0 

0 

1.3 

.7

.7 

.7 

.8 

.7 

.6

.4 

.2 

.2

.2 

.2

S.4 

3.4 

3.8 

3.2 

1.9

1.7 

1.9 

1.9 

1.9 

1.4

.4 

.4 

.8 

1.2 

1.1 

.6

Jan.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

2.1 

2.2 

.4 

.1 

.1 

.1

Feb.

0.1 

0 

0 

0 

0

0 

0 

.1 

0 

0

0 

0 

0 

0

.7

0 

0 

.4 

3.1 

5.4

3.9 

4.8 

1.7 

0 

0

0 

3.4 

2.2

Month

Oet

Hoi 

Dec

C

Jar 

Pet 

Hai 

Api 

Maj 

Jui Ju: Aue

Sej

V

alendar year 19 < 0... ...................

 11.. ........ ......

y. .....................................

Fater year 1940-4

liar.

0.2 

3.6 

6.2 

6.0 

6.2

6.2

3.3 

.5 

0 

0

3.9 

4.1 

3.7 

3.7 

2.2

S.O 

2.7 

5.1 

4.1 

6.7

11 

IS 

10 

15 

16

12

4.6 

0 

.4 

1.1 

.8

Apr.

S.5 

13 

IS 

16 

S.2

3.7 

19 

24 

25 

25

25 

29 

28 

27 

22

17 

IS 

14 

S.O 

0

0 

14 

20 

22 

25

22 

11 

0 

9.1 

12

Secondfoot -day a

267.3 

72.0 

34.8

2,228.9

5.0 

25.8 

154.3 

468.5 

435.0 

595.6 

250.7 

313.2 

375.8

2,998.0

May

10 

10 

1.0 

6.3 

2.8

1.1 

7.7 

9.7 

12 

16

17 

20 

21 

22 

20

14 

14 

20 

17 

8.2

4.2 

7.0 

16 

22 

23

22 

23 

20 

18 

14 

16

Maximum

14 

12

3.6

SO

2.2

5.4 

16 

29 

23 

28 

24 

29 

27

29

June

17 

21 

22 

17 

21

21 

22 

25 

24

as

2S 

27 

86 

24 

20

19 

15 

17 

19 

17

22

25 

26 

26 

SO

12 

7.2 

9.4 

14

11

July

9.5

9.5 

12 

14 

14

9.2 

0 

0 

0 

0

0 

.2

.1 

0 

.3

3.8 

7.5 

14 

19 

24

0 

0 

0 

9.3 

24

21

20 

13 

9.3 

8.8 

8.2

Minimum

3.4 

0 

0

0

0 

0 

0 

0 

1.0 

7.2 

0 

0 

0

0

Aug.

6.2 

5.6 

2.0

.3 

2.4

.1 

0 

0 

6.5 

IS

16 

14 

14 

14 

10

le

1.2 

0 

0 

8.9

23 

23 

16 

IS 

13

12 

10 

21 

2.0 

19 

29

Mean

8.62 

2.40 

1.12

6.09

.16 

.92 

4.9S 

15.6 

14.0 

19.9 

8.09 

10.1 

12.5

S.21

Sept.

27 

6.5 

6.9 

23 

25

25 

15 

12 

12 

12

13 

12 

IS 

14 

11

8.8 

9.0 

7.4 

7.0 

12

11 

10

u

12 

IS

14 

IS 

IS 

V.2 

0

Run-off In 

acre-feet

530 

143 

69

4,420

9.9 

51 

306 

929 

863 

1,180 

497 

621 

745

5,940
260 GILA RIVER BASIN

Shrlver canal at Virden, N. Hex.

Location.- Water-stage recorder and concrete control, lat. 32°40', long. 109°00', In

 SISEi sec. 3, T. 19 S., R. 21 W., a quarter of a mile downstream from heading, 1 mile 

southeast of Virden, N. Mex., and about 9 miles southeast of Duncan, Arizona.

Records available.- January 1939 to September 1941.

Extremes.- Maximum gage height during year, 3.86 feet Sept. 29 (discharge not determined); 

no flow at times.

1939-41: Maximum discharge recorded, 29 second-feet Oct. 8, 1939 (gage height, 3.27 

feet) from rating curve extended above 6 second-feet by logarithmic plotting; maximum 

gage height that of Sept. 29, 1941; no flow at times.

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

 Canal diverts water from left bank of Glla River for irrigation on lands In New Mexico.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23

24 

26

26 

27 

26 

29 

30 

31

Oct.

0 

0 

0 

0 

0

0 

0 

0.2 

1.6 

1.2

.5 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

.1 

0 

0 

0 

0

Nov. Dec. Jan. Feb.

Month

Oct 

Non

Dec

C

Jar 

Fet 

Mar 

Api 

Ma3 

Jur 

Ju] 

Aug 

Sen

V ater year 1940 

Mar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

1.8

a3

4.5 

2.9 

1.6 

.7 

.6

1.3 

0 

0 

0 

0

Secondfoot-days

3.6 

0 

0

439.0

0 

0 

0 

28.2 

78.7 

67.7 

12.3 

72.2 

21.5

2S4.2

May

0 

0 

0 

0 

2.6

6.6 

7.0 

7.3 

6.8 

6.3

5.9 

5.5 

5.2

4.7 

4.0

3.5 

2.7 

1.6 

1.1 

.6

.5 

0 

0 

0 

0

0 

0

.4 

1.1 

1.7 

3.6

Maximum

1.6 

0 

0

6.8

0 

0 

0 

4.5 

7.3 

4.4 

2.6 

6.3 

2.6

7.3

June

3.2 

3.0 

3.0 

3.6 

3.2

2.8 

2.0 

1.1 

.6 

0

0 

.7 

2.0 

1.3 

.6

1.8 

4.4 

4.4 

3.9 

3.2

2.1 

2.1 

2.9 

3.0 

4.0

4.3 

3.5 

1.1 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

.9 

2.5

2.4 

.6 

0 

0 

0

 o

0 

2.1 

1.4 

.4

0 

0 

0 

0 

0

0 

6 

2 

2 

4 

6

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

2.4 

4.3 

3.8 

3.4 

2.9

2.2 

1.7 

1.2 

4.9 

4.9

3.3 l.e

3.6 

6.2 

2.9

0 

0 

0 

0 

0

.9 

.7 

.4 

.3 

2.1

2.1 

1.2 

2.4 

6.3 

6.3 

0

Mean

0.12 

0 

0

1.20

0 

0 

0 

.94 

2.54 

2.26 

.40 

2.33 

.72

.78

Sept.

0 

0 

1.7 

2.4 

1.9

.8 

.5 

2.1 

2.5 

1.7

1.2 

.9 

.7 

.9 

1.0

1.0 

.9 

.6 

.2 

0

0 

.1 

.1 

.1 

.1

.1 

0 

0 

aO 

aO

Run-off In 

acre-feet

7.1 

0 

0

871

0 

0 

0 

56 

156 

134 

24 

143 

43

563

e No gage height record, discharge Interpolated.

Note.- No gage-height record Hov. 27 to Dec. 2, Sept. 29, 30.

4G
GILA RIVER BASIN 261

Valley canal near Vlrden, N. Hex.

Location.- Water-stage recorder and 4-foot concrete Parshall flume, lat. 32°41', long.

 109 U01', in SWiSWt sec. 32, T. 18 S., R. 21 W., li miles downstream from Intake, about 

2i niles west of Vlrden, and about 4t miles southeast of Duncan, Aria.

Records available.- October 1914 to September 1915, July 1923 to September 1931, and May

 1939 to September 1941 In reports of Geological Survey. January 1936 to December' 1938 

(at site about half a mile dovmstream and below wasteways) In files In office of Glla 

River Water Commissioner, appointed by United States District Court for Arizona.

Extremes.- Maximum discharge during year not determined; no flow at times.

 ~[339-41: Maximum recorded discharge, 95 second-feet Aug. 5, 1939 (gage height, 2.87 

feet); no flow at times.

Remarks.- Records good. Canal diverts from right bank of Qlla River In NEiNWi sec. 4, T.

 19 S., R. 21 W., New Mexico for Irrigation In Duncan Valley In Arizona.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

S 

4 

5

6 

7 

8 

9 

10

11 

18 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

86 

87 

28 

89 

30 

31

Oct.

17 

IS 

16 

15 

15

16 

14 

13 

9.0 

6.4

7.7 

7.1 

3.6 

3.4 

e3.9

S.8 

7.9 

7.3 

6.7 

7.7

8.8 

7.3 

7.3 

S.8 

9.9

9.9 

9.5 

10 

18 

10 

14

Nov.

15 

15 

15 

14 

13

14 

16 

18 

88 

24

84 

26 

86 

24 

83

24 

84 

24 

27 

31

31 

30 

80 

.8 

16

88 

88 

8T 

89 

89

Dec.

30 

31 

32 

33 

34

e!4 

0 

0 

0 

0

0 

0 

0 

82 

31

86 

28 

88 

18 

0

0 

0 

17 

87 

15

17 

82 

16 

15 

18 

26

Jan.

35i.e

4.S 

10 

6.8

1.5 

4.6 

4.6 

0 

0

0 

0 

8.4 

8.2 

.7

.1 

4.5 

10 

8.9 

7.9

7.8 

6.6 

5.9 

5.0 

4.9

4.9 

4.5 

4.9 

19 

82 

IS

Feb.

15 

12 

9.1 

7.2 

5.7

5.7 

19 

30 

20 

16

16 

15 

15 

11 

9.3

7.3 

6.6 

6.6 

6.8 

5.7

7.0 

9.6 

13 

15 

13

14 

11 

8.5

Month

Dot 

NOT 

Dec

C

Jai 

Pel 

Mai 

Api 

Ma: 

Jui 

Ju] 

Au« 

Sej

?

alendar year 194 0......................

 11. ............. . ........ ...... .

y.. ....................................

rater year 1940-4

Mar.

6.6 

6.S 

11 

14 

10

8.3 

6.9 

4.9 

3.6 

2.9

5.0 

2.0 

8.8 

4.0 

28

36 

89 

88 

83 

17

13 

17 

IS 

25 

24

80 

15 

15 

26 

28 

83

Apr.

84 

27 

30 

87 

22

19 

16 

13 

10 

9.S

9.3

19 

35 

37 

38

38 

37 

38 

40 

42

41 

39 

11 

87 

37

3S 

18 

18 

84 

16

Secondroot-days

309.8 

658.8 

476.0

4,964.2

208.7 

329,5 

455.2 

794.1 

840. 2 

794.0 

570.2 

509.5 

571.1

6,516.5

May

14 

33 

28 

28 

27

33 

34 

34 

34 

34

34 

34 

34 

33 

32

31 

88 

23 

21 

17

87 

37 

37 

30 

aO

1.2 

16 

38 

38 

31 

17

Maximum

18 

31 

34

34

35 

30 

36 

42 

37 

36 

35 

33 

68

62

June

80 

36 

35 

35 

34

33 

33 

31 

28 

85

28 

88 

85 

30 

28

83 

21 

26 

29 

24

17 

16 

20 

21 

89

30 

28 

26 

84 

23

July

19 

14 

16 

18 

15

19 

26 

83 

80 

15

14 

18 

7.5 

6.6 

7.3

4.9 

19 

31 

35 

35

a7.2 

.7 

86 

31 

33

85

18 

22 

21 

17 

12

Minimum

3.4 

.2 

0

0

0 

5.7 

2.0 

9.3 

0 

16 

.7 

1.5 

0

0

Aug.

7.9 

5.0 

4.1 

S.O 

4.S

1.5 

3.1 

3.1 

22 

30

84 

15 

11 

8.1 

81

81 

27 

33 

31 

84

85 

88 

24 

81 

18

14 

8.5 

7.4 

26 

83 

16

Mean

9.99 

81.9 

15.4

13.6

6.73 

11.8 

14.7 

26.5 

27.1 

86.5 

16.4 

16.4 

19.0

17.9

Sept.

v 83 

15 

18 

S.I 

8.7

15 

80 

19 

18 

19

85 

84 

, 88 

84 

84

85 

84 

22 

18 

aO

aO 

7.3 

13 

14 

16

15 

14 

86 

e68 

e40

Run-off In 

acre-feet

614 

1,310 

944

9,850

414 

654 

903 

1,580 

1,670 

1,570 

1,130 

1,010 

1,130

12,930

a No gage-height record; discharge computed on basis of comparison with discharge of ditch station dovmstream operated by Glla River Water Coramlsaloner.

e Sage reading not representative of average for day; discharge computod on basis of available 

record and capacity of canal.
262 GILA RIVER BASIN 

San Francisco River near Glenwood, N. Mex.

Location.- Water-stage recorder, lat. 33°15'05", long. 108°52'40", in NEiNWi sec. S3, 

T. in 3., R. 20 W., a quarter of a mile upstream from the hot springs and 6 miles 

south of Glenwood. Datum of gage is 4,552.06 feet above mean sea level, datum of 1929.

Erainage area.- 1,660 square miles.

Records available.- October 1930 to February 1934 (at site 44 miles upstream) and February 

1934 to September 1941 in reports of Geological Survey. October 1927 to December 1931 

(at site 4s miles upstream) in reports of State engineer.

Average discharge.- 12 years (1928-31, 1932-41), 73.6 second-feet.

Extremes.- Maximum discharge during year, 4,900 second-feet Dec. 25 (gage height, 6.64 

reetj, from rating curve extended above 1,240 second-feet by logarithmic plotting; 

minimum daily, 24 second-feet Nov. 14.

1930-41: Maximum diecharge, 6,000 second-feet July 25, 1940 (gage height, 7.32 

feet), from rating curve extended above 800 second-feet by logarithmic plotting; 

minimum daily, 7.7 second-feet June 21, 1934.

Remarks.- Records good except those for periods of no gage-height record and those above 

2,000 second-feet, all of which are poor. Diversions above station for irrigation.

Discharge, In second-feet, water year October 194O to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

31 

22 

23 

24 

25

26 

27 

33 

29 

30 

31

Oct.

151 

39 

71 

58 

53

51 

49 

42 

41 

39

43 

39 

39 

33 

35

34 

34 

34

33 

31

30 

29 

27 

27 

26

25 

26 

34

32 

31 

30

Nov.

30 

39 

29 

27 

26

26 

27 

29 

39 

29

27 

26 

25 

24 

25

25 

26 

36 

14S 

129

66 

49 

46 

51 

53

51 

44

41 

41 

41

Dec.

41 

41 

39 

41 

39

39 

41 

39 

39 

4S

177 

764 

S2O 

296 

170

115 

99 

101 

94 

34

77 

73 

73 

75 

2,240

620 

260 

1S4 

164 

253 

1,410

Jan.

al,400 

a780 

aSOO 

a330 

a260

a210 

also 

a!30 

96 

96

101 

3S1 

421 

230 

231

203 

170 

141 

126 

126

115 

101 

91 

37 

99

107 

91 

933 

620 

442 

265

Feb.

203 

167 

151 

135 

132

135 

617 

914 

540 

400

394 

470 

407 

324 

235

296 

358 

388 

400 

435

533

737 

674

eso

519

491 

414 

346

Month

Got 

Don 

Dec

C

Jan 

Pet 

Mar 

Apr 

Ma, 

Jur 

Jul 

Aug 

Sej

*

alendar year 19410. .....................

ater year 1940-4

Mar.

358 

491 

540 

423 

414

435

370 

318 

290 

270

260 

265 

435 

1,380 

3,350

a2,700 

a2,400 

a900 

a700 

a540

a560 

a480 

a 580 

620 

604

S56 

470 

428 

463 

519 

533

Apr.

564 

588 

533

463 

421

463 

421 

364 

340 

334

324 

346 

414 

382 

346

307 

296 

302 

390 

255

227 

215 

203 

195 

215

1,020 

2,340 

1,710 

1,220 

810

Second - 

foot-days

1,319 

1,255 

3,556

30,497

9,113 

11,445 

23,157 

15,908 

14,081 

2,423 

1,778 

2,436 

4,148

95,629

Hay

724 

1,190 

742 

678 

734

774 

790 

766 

694 

686

649 

635 

5S6 

488 

410

345 

290 

275 

252 

316

133 

167 

167 

315 

240

213 

196 

188 

176 

164 

149

MaxlnnMB

1S1 

148 

2,240

2,240

1,400 

914 

3,350 

2,340 

1,190 

167 

158 

165 

1,700

3,350

June

134 

135 

118 

108 

110

102 

96 

96 

92 

84

73 

73 

64 

63 

63

58 

51 

51 

49 

48

48 

48 

48 

152 

167

73 

66 

a60 

a53 

46

July

43 

39

39 

39 

39

39 

45 

39 

32

32

27 

32 

36 

42 

42

69 

57 

101 

94 

92

102 

80 

125 

152 

77

66 

a54 

a45 

a37 

31 

31

Minimum

25 

24 

39

11

37 

132 

260 

195 

149 

46 

27 

26 

40

24

Aug.

26 

26 

29 

64 

S8

67 

77 

61 

56 

77

61 

61 

51 

53 

35

134 

138 

115 

77 

140

162 

165 

164 

80 

69

61 

54 

53 

54 

54 

54

Mean

42.5 

41.8 

S76

83.3

294 

409 

747 

530 

454 

80.9 

57.4 

78.6 

158

262

Sept.

61 

223 

75

68 

66

56 

66 '66 

66 

54

66 

66 

65 

a 56 

64

51 

49 

48 

50 

72

86 

66 

48 

45 

44

40 

42

86 

1,700 

691

Run-off In 

acre-feet

2,620 

2,490 

16,970

60,490

18,090 

22,700 

45,930 

31,650 

27,930 

4,820 

3,530 

4,830 

8,230

139,700

Peak discharge.- Dec. 25 (6:15 a.m.) 4,900 seo.-ft.; Dec. 31 (1 a.m.) 4,450 sec.-ft.; Jan. 88 

(1:40 p.m.) 8,900 sec.-ft.; Mar. 15 (8:30 a.m.) 4,300 sec.-ft.; Apr. 27 (8s30 a.m.) 2,900 seo.-ft.; 

Sept. 29 (3 p.m.) 2,340 seo.-ft.

a No gage-height record; .discharge computed on basis of weather records and records for Qlla 

River near Qlla, near Red Rock, and near Vlrden, N. Hex.
GILA. RIVER BASIN 263

San Francisco River at Clifton, Arlz.

Location.- Water-stage recorder, lat. 33°03'00", long. 109°17'45", In SWiSEi sec. 30, 

T. 4 S., R. 30 E., at Railroad Boulevard bridge at Clifton. Datum of gage Is 3,430.5 

feet above mean sea level, datum of 1929, unadjusted.

Drainage area.- 2,790 square miles.

Records available.- July 1927 to October 1933, May 1935 to September 1941. October 1910 

to July 1918 (fragmentary) at several sites, none of which was more than 2 miles 

upstream.

Average discharge.- 12 years (1927-33, 1935-41), 191 second-feet.

Extremes.- Maximum discharge during year, 8,700 second-feet Dec. 31 (gage height, 11.55 

feet); minimum, 51 second-feet July 13 (gage height, 2.47 feet).

1927-41: Maximum discharge, 12,400 second-feet Feb. 8,1937 (gage height, 12.7 

feet); probably no flow at times In 1934; minimum discharge recorded, 8 second-feet 

June 18-, 19, 1939.

Remarks.- Records good. Diversions above station for irrigation, mining, and municipal 

supply. During the year 51 discharge measurements were made.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7

e

9 

10

11

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

282 

17S 

136 

116 

12S

104 

94 

S7 

78 

75

76 

78 

76 

70 

68

66 

65 

62 

60 

60

59 

58 

56 

53 

55

53 

52 

60 

63 

68 

63

NOT.

62 

62 

59 

60 

59

' 60 

69 

72 

69 

6S

65 

63 

63 

60 

60

59 

5S 

69 

636 

653

228 

163 

166 

212 

163

140 

125 

112 

104 

100

Dec.

97 

92 

91 

89 

87

87 

S6 

S6 

86 

91

294 

1,690 

1,680 

788 

494

346 

293 

337 

321 

276

251 

232 

210 

204 

3,910

1,760 

850 

621 

491 

675 

6,030

Jan.

2,770 

1,320 

880 

690 

558

518 

440 

3S2 

353 

327

321

SS1 

1,070 

820 

666

576 

487 

406 

359 

330

308 

282 

262 

245 

282

308 

264 

2,080 

2,170 

1,280 

890

Feb.

706 

584 

489 

438 

409

409 

1,240 

2,030 

1,080 

841

794 

865 

S65 

727 

664

644 

6S5 

727 

74? 

771

915 

1,160 

1,280 

1,160 

1,140

1,100 

940 

841

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Mai 

Api 

Maj 

Jur 

Ju] 

tot 

Set

1

alendar year 19> 0..... .................

"11. . .

ater year 1940-'

Mar.

794 

915 

992 

890 

841

S17 

749 

6S5 

624 

584

546 

546 

706 

1,690 

5,320

4,420 

2,810 

1,970 

1,650 

1,540

1,440 

1,320 

1,160 

1,100 

1,100

992 

890 

817 

817 

890 

915

Apr.

992 

1,080 

1,080 

965 

86S

S90 

890 

S17 

771 

749

749 

727 

794 

727 

706

644 

624 

644 

644 

604

565 

527 

508 

482 

489

1,480 

2,970 

2,330 

1,760 

1,380

Secondfoot -days

2,599 

3,939 

22.545

67,670

22,527 

24,253 

40,530 

28,453 

26,580 

4,745 

3,468 

6,469 

10,328

196,436

May

1,250 

2,500 

1,540 

1,260 

1,220

1,280 

1,320 

1,2SO 

1,200 

1,200

1,140 

1,100 

1,050 

915 

794

706 

624 

584 

546 

527

456 

412 

395 

695 

459

445 

392 

384 

357 

337 

312

Maximum

282 

653 

6,030

6,030

2,770 

2,030 

5,320 

2,970 

2,500 

285 

241 

1,340 

4,710

6,030

June

2S5 

26S 

259 

240 

222

212 

199 

186 

1S1 

173

162 

149 

13S 

129 

126

121 

114 

106 

100 

96

92 

90 

93 

104 

251

190 

141 

119 

105 

94

July

87 

7S 

69 

65 

62

62 

62 

71 

70 

65

65 

61 

5S 

62 

86

203 

144 

146 

199 

166

170 

185 

171 

241 

181

145 

126 

110 

98 

86 

74

Minimum

52 

58 

86

21

245 

409 

546 

482 

312 

90 

58 

56 

64

52

Aug.

62 

56 

74 

S7 

120

160 

194 

172 

138 

114

124 

116 

113 

135 

205

355 

1,340 

377 

237 

348

316 

265 

2S8 

216 

158

132 

116 

104 

127 

121 

99

Mean

83.8 

131

727

185

727 

866 

1,307 

948 

857 

158 

112 

209 

344

538

Sept.

150 

153 

173 

114 

96

86 

83 

76 

76 

72

67 

64 

108 

144 

116

99 

89 

82 

108 

147

150 

141 

136 

105 

98

92

87 

936 

4,710 

1,770

Run-off In 

acre-feet

5,160 

7,810 

44,780

134,200

44,680 

48,110 

80,390 

56,440 

52,720 

9,410 

6,880 

12,890 

20,490

389,600

Peak discharge.- Dec. 25 (7s30 a.m.) 6 r 070 sne.-fh.f Dan. SI (2 = 40 «..m.) 7 r 60O sBE .-ft.f Sept. 2E
864 GILA RIVER BASIN

San Simon Creek near San Simon, Ariz.

\Locatlon.- Water-stage recorder, lat. 32°13', long. 109°10', in SWi sec. 10, T. 14 S., R. 

31 E., 44 miles southeast of San Simon.

Drainage area.- 803 square miles.

Records available.- June 1931 to October 1933, May 1935 to June 1941 (discontinued). 

August 1919 to September 1925, at site 3s miles downstream.

Average discharge.- 13 years (1919-25, 1931-33, 1935-40), 5.3 second-feet.

Extremes.- Maximum discharge during period, 373 second-feet Apr. 26 (gage height, 5.24 

feet); no flow during greater part of period.

1919-25, 1931-41: Maximum discharge, 5,350 second-feet July 21, 1923; no flow 

greater part of each year.

Remarks.- Records poor. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

80

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

9 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

1

6 

0

0 

0 

0 

0 

0

Dec. Jan.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1

2 

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

1

0 

0 

0

0 

0 

0

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Mat 

Api 

Maj 

Jur 

Ju3

AUg

Sei

1

alendar year 19' 0.. ....................

11......................... .

 y

"he perlc

Mar.

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

Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

50 

3 

0 

0 

0

Secondfoot-days

9 

7 

0

3,000

3 

1 

1 

53 

0 

0

-

May

Maximum

9 

6

0

692 '

2 

1

1 

50 

0 

0

-

June July

Minimum

0 

0 

0

0

0 

0 

Q 

0 

0 

0

-

Aug.

Mean

0.3 

.2 

0

S.2

.1 

.04 

.03 

1.8 

0 

0

-

Sept.

Run-off In 

acre-feet

18 

14 

0

5,960

<5 

2 

2

105 

0 

0

147
GILA RIVER BASIN 

San Simon Creek near Solomonsvllle, Ariz.

265

Location.- Water-stage recorder, lat. 32°48', long. 109°38', in NWiNEi sec. 25, T. VS., 

R. 26 E., 1 nile southwest of Solomonsville and 2i 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 1941.

Extremes.- Maximum discharge during year, 13,000 sec'ond-feet Aug. 17 (gage height, 17.55 

feet), by slope-area method; no flow on many days. '

1931-41: Maximum discharge, 27,500 second-feet Aug. 9, 1931 (gage height, 19.0 

feet), by slope-area method; no flow on many days in each year.

Remarks.- Records fair except those below 5 second-feet, which are poor. Small diversions above station for irrigation. Records do not include waste water from San Jose 

canal, which diverts from Gila River.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

BS 

29 

30 

31

Oct.

1 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

86 

25 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Nov.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

180 

4

0 

0 

48 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

3

2 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

56 

48

Jan.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

2 

0 

0 

0

Feb.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1

25 

3 

0 

0

0 

0 

0

Month

Oct 

No\ 

Dec

C

Jar 

Fel 

Mai 

Api 

Maj 

Jur 

Ju] 

A«f 

Sei

1

alendar year 19 to. .....................

 11. ............. .. ....... . .

Fater year 1940-

Mar.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

1 

.4 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

205

185 

39 

5 

.2 

0

Seeondfoot-days

52 

232 

109

5,300

2 

29 

1.4 

434.2 

0 

0 

247 

3,510 

2,051

6,667.6

May

Maximum

26 

180 

56

466

2 

25 

1 

205 

0 

0 

86 

2,010 

985

2,010

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

0 

0

10 

0 

33 

86 

44

40 

15 

17 

2 

0

0 

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 

4

0 

50

1 

69 

12

0 

0 

0 

88 

13

724 

2,010 

222 

20 

20O

10 

2 

25 

0 

0

0 

0 

0 

0 

40 

0

Mean

1.7 

7.7 

3.5

14.5

.1

1.0 

.05 

14.5 

0 

0 

8.0 

113 

68.4

18.3

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

2

1 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

9S5 

445 

618

Run-off In 

acre-feet

103 

460 

216

10,500

4

58 

5 

861 

0 

0 

490 

6,960 

4,070

13,220

Peak discharge.- Aug. 17 (12:10 a.m.) 13,000 aeo.-ft.; Sept. 28 (4 p.m.) 3,580 390.-ft.; Sept. 

28 (9 p.m.) 4,370 sec.-ft.; Sept. 30 (11:30 a.m.) 790 aec.-ft.
266 GILA RIVER BASIN

San Carlos River near Peridot, Ariz.

Location.- Water-stage recorder, lat. 33°16', long. 110°26', in sec. 7, T. 2 S., R. 19 

E., unsurveyed, on San Carlos Indian Reservation, at railroad bridge at head of San 

Carlos Reservoir, 2 miles south of Peridot. Datura of gage is 2,506.6 feet above mean 

sea level (Southern Pacific R. R. bench mark).

Drainage area.- 1,070 square miles.

Records available.- March 1929 to September 1941. August 1910 to January 1911, April 

1914 to September 1915 ^fragmentary) at site 5& miles downstream.

Average discharge.- 12 years (1929-41), 67.4 second-feet.

Extremes.- Maximum discharge during year, 40,600 second-feet Mar. 14 (gage height, 11.4 

feet), from rating curve extended above 23,000 second-feet on basis of records of 

inflow to San Carlos Reservoir; minimum, 0.2 second-foot Oct. 26.

1929-41: Maximum discharge, that of Mar.. 14, 1941; no flow on several days in most 

years.

Remarks.- Records good except those for periods of unstable control and those above 100 

second-feet, which are fair. Small diversions above station for Irrigation. During 

the year 48 discharge measurements were made.

Discharge, In seccnd-feet, water year October 1940 to September 1941

Cay

1 

Z 

3 

4 

5

6

7

e

9 

10

11

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

16 

8 

5 

4 

22

16 

8 

3 

40 

36

6 

6 

4 

4 

3

3 

2 

2 

2 

2

3 

4

.5 

.5

1

.5 

2 

5 

6 

4 

5

Nov.

4 

4 

4 

4 

4

6 

6 

6 

6

7

7 

7 

8 

6 

5

5 

6 

15 

763 

398

82 

44 

37 

48 

37

26 

21 

16 

15 

12

Dec.

12 

12 

12 

12 

12

12 

10 

10 

10 

12

15 

635 

1,610 

464 

128

68 

57 

103 

68 

56

42 

36 

32 

236 

3,520

431

225 

132 

116 

3,100 

5,840

Jan.

1,620 

454 

198 

675 

655

655 

666 

e46 

640 

635

1,340 

2,210 

696 

6220 

el 40

6130 

696 

73 

70 

69

52 

56 

55 

51 

2,030

1,030 

6270 

2,100 

1,760 

6610 

6310

Feb.

150 

124 

119 

110 

103

103 

2,170 

2,OOO 

6640 

6250

162 

128 

110 

100 

82

74 

70 

65 

103 

318

192 

240 

1,090 

e790 

3,590

2,060 

6760 

6330

Month

Oot

No-s 

Dec

C

Jan 

Pet 

Mar 

Apr 

Maj 

Jun 

Jul 

Aug 

Sej

K

alendar year 194 ) ......................

ust....................................

ater year 1940-4

liar.

166 

156 

156 

119 

116

268

132 

88 

74 

62

69 

160 

5,050 

13,200 

14,200

62,400 

6760 

396 

318 

240

162 

137 

106 

94 

82

76 

71 

70 

66 

66 

66

Apr.

105 

350 

1,270 

785 

6410

6230 

6140 

690 

675 

57

54 

56 

430 

6280 

94

79 

68 

60 

54 

51

47 

48 

44 

40 

38

35 

33 

30 

29 

28

Secondfoot-days

224.6 

1,609 

17,016

26,037.6

15,998 

16,023 

39,110 

5,110 

516 

201 

532 

1,718 

3,401

101,458.5

May

28 

28 

28 

24 

24

23 

21 

20

20 

20

19 

19 

17 

15 

15

14 

13 

12 

12 

13

13 

16 

13 

12 

12

10 

11 

11 

12 

12 

10

Maximum

40 

763 

5,640

5,840

2,210 

3,590 

14,200 

1,270 

28 

10 

172 

550 

2,040

14,200

June

10 

10 

9 

9 

9

9 

S 

8

e

8

7 

8 

8 

8 

7

6 

6 

6 

6 

6

6 

4 

4 

6 

5

4 

4 

4 

4 

4

July

4 

4 

4 

3 

3

3 

3 

3 

3 

3

3 

3 

4 

4 

3

4 

3 

3 

3

28

172 

660 

e7O 

e45 

30

21

17 

12 

10 

6 

6

Minimum

0.5 

4 

10

0

35 

66 

59 

28 

10 

4 

3 

6 

3

.6

Aug.

6 

6 

6 

6

e75

e!70 

640 

680 

6560 

6210

100 

60 

36 

30 

39

49

53 

30 

23 

25

22 

26 

16 

12 

10

10 

8 

7 

6

e

7

Mean

7.24 

53.6 

649

71.1

516 

572 

1,262 

170 

16.6 

6.7 

17.2 

55.4 

US

278

Sept.

6 

6 

6 

6 

4

4 

4 

4 

4 

4

3 

3 

4 

6SO 

elO

8 

7 

8 

9 

14

10 

7 

6 

6 

6

6 

6 

2,040 

1,020 

164

Run-off In 

acre-feet

446 

3,190 

33,760

61,640

31,730 

31,780 

77,570 

10,140 

1,020 

399 

1,060 

3,410 

6,750

201,200

Peak discharge.- Dec. 25 (2:20 a.m. J 14,600 sec. -ft.: Dec. 30 (10:46 p.m.) 18.100 sec. -ft. t Dec. 31 (4:30 p.m.) 13,200 sec.-ft.; Mar. 14 (12:20 p.m.) 40,600 sec.-ft.j Bar. 16 (2 p.m.) 21,600 

sec.-ft.

e Stage-discharge relation unstable.
01LA RIVER BASIN 267

San Pedro River at Palomlnas, Aria.

Location.- Water-stage recorder, lat. 31°23', long. 110°07', In SEi sec. 33, T. 33 S., 

 RT~E2~E., at bridge half a mile east of Palomlnas, 4 miles downstream from the 

International boundary, and 12 miles southwest of Blsbee.

Drainage area.- 741 square miles, of which 649 square miles are in Mexico.

Records available.- May 1930 to October 1933, May 1935 to July 1941 (discontinued).

Extremes.- Maximum discharge during period, 5,900 second-feet Jan. 28 (gage height, 11.50 

feet), from rating curve extended above 1,000 second-feet on basis of slope-area 

determinations at gage heights 12.25 and 16.45 feet; minimum, 2 second-feet June 13-29, 

July 3.

1930-41: Maximum discharge, 22,000 second-feet Aug. 14, 1940 (gage height, 16.45 

feet), by slope-area method; no flow June 29 and July 1, 1930.

Greatest flood known occurred Sept. 28, 1926 (gage height, about 24.2 feet, present 

datum).

Remarks.- Records good except those above 500. second-feet and those for periods of no 

gage-height record, which are poor. No diversions above station In Arizona and 

probably none In Mexico.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2

Z 

4 

6

6 

7 

S 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

£0

£1 

££ 

S3 

£4 

£5

£6 

27 

28 

29

50 

31

Oct.

34

17 

11 

10 

10

10 

9 

9 

9 

9

9 

9 

13 

11 

S

7 

6 

6 

6 

6

6 

6 

6 

7 

6

6 

7 

7 

7 

6 

6

HOT.

6 

6

6 

7 

S

9 

9 

15 

11 

7

7 

7 

7 

7 

7

7 

7 

S 

9 

9

S 

7 

7 

7 

8

8 

8 

8 

S 

S

Dec.

S 

7 

7 

7 

7

7 

7 

7 

9 

11

15 

17 

16 

14 

13

13 

16 

14 

13 

13

11 

11 

11 

11 

12

12 

12 

12 

11 

11 

13

Jan.

13 

13 

12 

11 

11

11 

11 

11 

10 

10

10 

10 

10 

10 

10

9 

9 

9 

9 

9

9 

9 

9 

9 

9

S 

9 

1,690 

200 

40 

20

Feb.

16

16 

10 

10 

10

10 

10 

200 

50 

30

26 

25 

20 

21 

20

19 

19 

IS 

IS 

IS

IS 

IS 

23 

23 

20

IS 

17 

16

Month

Ool 

Hoi

D0(

(

Jai 

F«l 

Mai 

Api 

Ma;

Jill ju:

AUj

SO]

i

'alendar year 19 to......................

*il

he perlo

Mar.

16 

16 

16 

16 

16

16 

15 

15 

15 

16

16

15 

16 

16 

16

14 

14 

14

14 

14

14 

14 

13 

13 

13

13

13 

13 

12 

12 

13

Apr.

13 

13 

13 

12 

12

11 

11 

12 

12 

12

12 

16 

36 

26 

20

15 

16 

10 

10 

10

9 

9 

S 

S 

7

7 

6 

6 

6 

6

Secondfoot -days

277 

236

347

16,142.9

2,220 

716 

446 

361 

131 

74 

47

-

Bay

5 

5 

5 

5 

5

5 

5

4 

4

Maximum

34

15 

17

6,420

1,690 

200 

16 

36 

5 

4 

S

-

June

4 

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 

3

July

3 

3 

S 

6 

3

3

3 

3 

3 

3

3

3 

S 

3 

3

3

Minimum

6

6 

7

.7

S 

10 

12 

6 

4 

2 

2

-

Aug.

Mean

S.9 

7.9 

11.2

44.1

71.6 

25.6 

14.4 

12.0 

4.2 

2.6 

2.9

-

Sept.

Run-off In 

acre-feet

549 

468 

688

3£,0£0

4,400 

1,420 

SS6 

716 

260 

147 

93

9,630

F«ak discharge.- Jan. 28 (7:16 a.m.) E,9OO sec.-ft. 

Hot».- Bo gage-helfltot record Jan. 29 to Feb. 13 and Apr. 

basle of records for station at Charleston.

481676 O- 42 -18

16 to May 13; discharge computed on
268 GILA RIVER BASIN

San Pedro River at Charleston, Arlz.

Location.- Water-stage recorder, lat. 31°39', long. 110°11', In SWi sec. 35, T. 20 S., 

R. 21 E., unsurveyed, in Spanish land grant of San Juan de las Boquillas y Nogales, 

at Charleston dam site, three-quarters of a mile north of Charleston and 6 miles 

upstream from Babocoraari River. Datum of gage is 3,923.0 feet above mean sea level 

(Southern Pacific Railroad bench mark).

Drainage area.- 1,250 square miles, of which 696 square miles are in Mexico.

Records available,- May 1928 to December 1933 and May 1935 to September 1941. 1904 to 

1906 ana IHJ.U to 1928, at several sites upstream or downstream.

Average discharge.- 24 years (1915-33, 1935-41), 71.8 second-feet.

Extremes.- Maximum discharge during year, 10,800 second-feet Aug. 16 (gage height, 8.53 

reet); minimum, 4 second-feet July 5.

1928-41: Maximum discharge, 31,000 second-feet Aug. 13, 1940 (gage height, 13.1 

feet), from rating curve extended above 8,500 second-feet on basis of slope-area 

determination at gage height 21.9 feet; minimum, 1 second-foot June 27, 1939.

Maximum discharge known, about 98,000 second-feet Sept. 28, 1926 (gage height, 

21.9 feet, from floodmarks), by slope-area measurement.

Remarks.- Records good except those above 200 second-feet and those for period of partial 

record, which are fair. Diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z 

3 

4 

S

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

16 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

29 

30 

31

Oct.

el

36 

31 

28 

25

22 

21 

19 

17 

17

19 

21 

21 

29 

22

19is

18 

21 

20

£0

eo

19 

18le

17 

17 

17is

17 

17

Nov.

17 

17 

15 

16 

16

17 

19 

20 

24

21

21 

20 

20 

20 

21

22 

22 

22 

23 

£3

23 

21 

22 

22 

21

21 

21 

22 

23 

24

Dec.

24 

22 

22 

23 

23

22 

22 

22 

24 

27

27 

32 

31 

31 

26

28 

29 

29 

29 

29

27 

27 

27 

26 

26

24 

24 

24 

24 

24 

25

Jan.

26 

27 

25 

24 

25

25 

26 

25 

24 

25

27 

27 

26 

27 

26

24 

25 

25 

24 

24

24 

24 

24 

24 

25

24 

22 

1,720 

42S 

103 

47

Feb.

32 

28 

26 

24 

27

26 

26 

405 

128 

62

53 

51 

47 

42 

38

35 

34 

34 

32 

31

31 

29 

41 

39 

39

34 

31 

31

Month

Oet 

No\ 

Dec

C

Jar 

Fet 

Max 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sei

H

alendar year 1941J ......................

11 . .

ater year 1940-

Mar.

BS 

28 

26 

29 

29

29 

27 

25 

26 

28

27 

27 

27 

£6 

26

£5 

23 

23 

23 

22

22 

22 

23 

22 

21

21 

22 

23 

22 

21 

21

Apr.

24 

24 

24 

23 

£2

£2 

22 

22 

21 

20

19 

25 

28 

42 

34

2S 

26 

25 

27 

27

25 

23 

23 

24 

24

24 

23 

£1 

20 

19

Secondfoot-days

703 

616 

602

29,912

2,972 

1,460 

766 

731 

466 

254 

2,497 

6,S50 

2,418

20,535

May

19 

21 

20 

19 

17

17 

16 

16 

16 

16

16 

15 

14 

14 

15

14 

15 

16 

14 

14

15 

15

15 

14 

13

12 

12 

12 

12 

11 

11

Maximum

81 

24 

32

9,100

1,720 

405 

29 

42 

21 

11 

632 

2,530 

454

2,530

June

11 

11 

11 

10 

10

10 

9 

S 

9 

9

9 

10 

10 

10 

9

8 

8 

6 

8 

S

8 

S 

S 

S 

7

7 

6 

6 

5 

5

July

5 

5 

5 

5 

5 .

6 

17 

30 

12 

10

7 

10 

S 

S 

7

7 

110 

632 

106 

379

130 

31 

365 

189 

£12

56 

33 

33 

26 

21 

17

Minimum

17 

15 

22

4

22 

24 

21 

19 

11 

5 

5 

16 

13

5

Aug.

16 

16 

36 

16 

22

33 

53 

546 

2,530 

353

66 

47 

160 

237 

36

1,140 

S60 

61 

23 

25

25 

24 

189 

36 

2S

26 

25 

24 

34 

65 

39

Mean

22.7 

20.5 

25.9

81.7

95.9 

52.1 

24.7 

24.4 

15.0 

S.5 

60.5 

221 

SO. 6

56.3

Sept.

30 

26 

30 

30 

26

26 

454 

370 

asO 

a50

a 30 

a70 

a!60 

a 50 

a4Q

33 

61 

55 

21 

19

17 

15

14 

14 

13

13 

13 

139 

403 

114

Run-off In 

acre-feet

1,390 

1,220 

1,590

59,320

5,890 

2,900 

1,520 

1,450 

924 

504 

4,950 

13,590 

4,600

40,730

Peak discharge.- Jan. 28 (11 a.m.) 6,700 see.-ft.; July 17 (11 p.m.) 1,480 aee ft.; Aug. 9 

(4:3O a.m.) 6,700 see.-ft.; Aug. 16 (9:20 p.m.) 10,800 see.-ft.: Sept. 7 (4 p.m.) 2,530 sec.-ft.; 

Sept. 29 (6:30 a.m.) 1,250 see.-ft.

a No gage-height record at low stages; dally mean gage heights computed on basis of partial record 

and study of weather records.
GILA. RIVER BASIN 269

San Pedro River near Mammoth, Aria.

Location.- Water-stage recorder, lat. 32°44', long. 110°39', in NEi sec. 18, T. 8 S., 

 RTT7"~E., at highway bridge li miles north of Mammoth. Datum of gage is 2,307.06 

feet above mean sea level, datum of 1929.

Drainage area.- 3,610 square miles.

Records available.- May 1931 to June 1941 (discontinued).

Average discharge.- 10 years (July 1931 to June 1941), 71.1 second-feet.

Extremes.- Maximum discharge during period, 10,100 second-feet Jan. 29 (gage height, 9.7 

reet;; no flow during part of period.

1931-41: Maximum discharge, 50,000 second-feet Aug. 14, 1940 (gage height, 12.7 

feet), from rating curve based on four float-velocity measurements between 20,000 and 

41,000 second-feet; no flow during part of each year.

Greatest flood known occurred Sept. 28, 1926 (discharge, 90,000 second-feet, 

estimated on basis of peak discharge of San Pedro River at Charleston and of Gila River 

at Kelvin).

Remarks.- Records fair except those above 1,000 second-feet, which are poor, 

above station for irrigation.

Diversions

Discharge, In second-feet, water year October 1940 to September 1941

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

Dot.

60 

60 

40 

23 

14

6

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.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

120 

33

4 

0 

3 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0

1

8 

214 

212 

20 

0

0 

0 

31 

2 

0

0

1 

1 

4 

4BO

100 

31 

5 

2 

477 

4, ISO

Jan.

1,030 

175 

95 

36 

15

12 

5 

S 

5 

4

7 

7 

6 

5 

3

2

1 

2 

2

1

1

1 

1 

2 

2

1 

1 

66 

2,320 

360 

127

Feb.

112 

8S 

79 

74 

76

74 

360 

616 

343 

25S

136 

102 

85 

68 

54

52 

46 

43 

48 

36

33 

29 

119 

136 

120

136 

95 

a65

Month

Oct 

No\ 

Dec

C

Jar 

Fet 

Mai 

Apr 

Maj 

Jur 

Jul 

Aug 

Set

T

alendar year 19 10. .....................

tie perio

Mar.

a55 

a50 

43 

45 

71

136 

76 

26 

29 

4

2 

18 

59 

160 

690

963 

376 

204 

120 

60

29

28 

26 

24 

26

28 

26 

26 

22 

19 

21

Apr.

21 

22 

34 

26 

19

19 

18 

19 

16 

12

15 

19 

21 

17 

14

11 

11 

12 

15 

15

12 

9 

9

7 

9

14 

12 

10 

S 

8

Secondfoot -days

203 

160 

5,769

37,291

4,303 

3,487 

3,462 

454 

103 

0

-

toy

12 

15 

19 

14 

11

9 

6 

3

3 

3

2 

2

1 

1 

1

1 

0 

0 

0 

0

"o

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

60 

120 

4,180

19,200

2,320 

618 

963 

34 

19 

0

-

June

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

Minimum

0 

0 

0

0

1 

29 

2 

7 

0 

0

-

Aug.

Mean

6.5 

5.3 

186

102

139 

125 

112 

15.1 

3.3 

0

-

Sept.

Run-off In 

acre-feet

403 

317 

11,440

/73.960

8,530 

6,920 

6,870 

900 

204 

0

35,580

Peak discharge.- Dec. 31 (3 a.m.) 9,290 sec.-ft.; Jan. 29 (3 a.m.) 10,100 sec.-ft. ' 

a No gage-height record; discharge computed on basis of recorded range In stage and records for 

stations on the Gila River below Coolldge Dam and at Kelvin and on Aravaipa Creek near Feldman.
270 01 LA RIVER BASIN

San Pedro River at Winkelman, Ariz.

Location.- Measuring section, lat. 32°59', long. 110°47', In SWi sec. 23, T. 5 S., R. 15 

E., at mouth, 1 mile west of Winkelman.

Drainage area.- 4,480 square miles.

Records available.- April to August 1890 (monthly discharges only, published as San Pedro 

River at Duflieyvllle, Arlz.), December 1928 to July 1941 (discharge measurements only, 

of which those for October 1933 to September 1934 were published as miscellaneous 

measurements). Station discontinued.

Remarks.- Diversions above station for irrigation. This record shows flow into the Olla 

River. See miscellaneous measurements (p. 306) for flow in canal,which diverts Just 

above mouth of San Pedro River.

Discharge measurements, water year October 1940 to September 1941

Day

2S

Discharge 

(second-feet)

nrt a

Day Discharge 

(second-feet)

1 vQ

24

12 P
OILA RIVER BASIN 271

Aravaipa Creek near Feldman, Ariz.

Location.- Water-stage recorder, lat. 32°50', long. 110°38', In NWi sec. 9, T. VS., R.

 17 £., 6 milee upstream from mouth and 6 miles southeast of Feldman. After Jan. 8, 

staff gage 100 feet upstream and across channel, at datum 0.32 foot higher.

Drainage area.- 540 square miles.

Records available.- May 1931 to June 1941 (discontinued). April 1919 to September 1921, 

at site 6 miles downstream.

Average discharge.- 10 years (July 1931 to June 1941), 31.2 second-feet.

Extremes.- Maximum discharge during period, 9,600 second-feet Dec. 31 (gage height, 10.88

 reetj; minimum, 3 second-feet Oct. 4.

1931-41: Maximum discharge, 10,000 second-feet Aug. 15, 1935 (gage height, 10.9 

feet), from rating curve extended above 3,000 second-feet; minimum, .0.3 second-foot 

Aug. 30, 1940.

A discharge, of 20,000 second-feet occurred Aug. 2, 1919.

Remarks.- Records fair except those above 100 second-feet, and those for period of no

 gage-height record, which are poor. Diversions above and below station for irrigation. 

Staff gage read twice daily.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

S 

S 

4 

S

6 

7 

8 

9 

10

11 

IS 

13 

14 

IS

16 

17 

18 

19

20

21 

28 

83 

24 

36

26 

27 

28 

29 

30 

31

Oct.

S 

S 

5 

S 

16

7 

6 

5 

S 

S

6 

7 

7 

7 

7

7 

5 

5 

6 

8

S 

7 

6 

7 

7

7 

7 

7 

7 

7 

7

NOT.

7 

7 

6 

6 

6

6 

6 

7 

6 

6

7 

7 

7 

9 

9

11 

11 

140 

1,530 

104

39 

24 

40 

34

35

31 

31 

38 

32

20

Dec.

19 

13

9 

9 

10

11 

11 

11 

10 

21

134 

276 

250 

40 

20

17 

16 

13 

13 

11

10 

10 

10 

20 

900

100 

60 

38 

20 

1,830 

4,060

Jan.

600 

a250 

a!50 

a80 

a60

a50 

a40 

36 

30 

28

30 

75 

27 

20 

22

25 

24 

22 

22 

20

20 

20 

20 

20 

160

20 

20 

500 

280 

125 

56

Feb.

46 

37 

36 

33 

30

38

1,750 

704 

220 

SS

58 

61 

52 

48 

45

41 

41 

39 

61 

6S

78 

111 

124 

7S 

516

350 

156 

73

Month

Oet 

Nc\ 

Dec

C

Jar 

Fel 

Max 

Apr 

Maj 

Jur 

Ju3 

Aug 

Sej

T

alendar year 1940..... .................

he perlo

Peak discharge. -

(5:So a.m.} 9,600 a

liar.

58 

142 

6S 

41 

495

252 

130 

91 

73 

63

58 

73 

7S 

237 

2,020

964 

21S 

97 

100 

70

70 

61 

50 

5S 

56

46 

43 

97 

70 

33 

43

Apr.

52 

66 

54 

34 

33

39

37 

30 

32 

29

36 

56 

43 

39 

27

28 29 

30 

30 

34

33

29 

28 

33 

36

es

39 

32 

33 

34

Seccndfoct-days

206 

2,216 

7,966

16,155.3

2,852 

4,976 

5,955 

1,138 

677 

319

-

Bay

41 

41 

33 

50 

32

29 

24 

23 

21 

21

22 

21 

88 

14 

14

14 

18 

20 

19 

17

18 

19 

18 

19

17

19 

18 

16 

15 

14 

10

Maximum

16 

1,530 

4,060

4,060

600 

1,750 

2,020 

83 

50 

13

-

June

13 

13 

13 

13 

13

12 

12 

12 

12 

12

11

10 

10 

1011

11 11 11

10 

8

8 

8 

9 

, 10 

10

10 

9 

9 

9 

9

July

Minimum

5 

6 

9

.4

20 

30 

33 

27 

10 

8

-

Aug.

Mean

6.6 

73.9 

857

44.1

92.0 

178 

192 

37.9 

21.8 

10.6

-

Sept.

Run-off in 

acre-feet

409 

4,400 

15,800

32,060

5,660 

9,870 

11,810 

2,360 

1,340 

633

52,180

NOT. 19 (4:20 a.m.) 4,450 sec. -ft,; Dac. 25 (2 a.m.) 2,300 sec. -ft.; Dec. 31 

ec.-ft.J Jan. 28 (6 a.m.) 2,600 see. -ft.; Feb. 7 (9:30 a.m.) 5,400 see. -ft.;

a He gage-height record; discharge computed en basis of records for stations en Olla River below 

Ccolidge Dam and at Kelvin and en San Pedro River near Mammoth.
272 GILA RIVER BASIN

Florence-Casa Grande canal near Florence, Ariz.

Location.- Water-stage recorder and Parshall flume, lat. 33°05', long. 111°17', In NEi 

 sec. 14, T. 4 S., R. 10 E., at China Wash, 3 miles downstream from Ashurst-Hayden Dam 

and head and 64 miles northeast of Florence.

Records available.- January 1928 to September 1941.

Remarks.- Records given herein are those of discharge at gaging station less flow pumped 

from wells Into canal In reach between head and gaging station. Records represent flow 

diverted from 01la River at Ashurst-Hayden Dam except for water wasted by sluicing or 

lost from canal between head and gaging station. All sluicing Is done above station. 

Discharge at gaging station computed on basis of gage heights and rating for Parshall 

flume; that of pumps on basis of records of pumpage.

Canal diverts water from left bank of Glla River at Ashurst-Hayden Dam In NWi sec. 

8, T. 4 S., R. 11 E., for Irrigation of lands under San Carlos Project. Most of the 

diverted water passed through San Carlos Reservoir and was released from Coolldge Dam; 

the remainder originated below Coolldge Dam, mostly from San Pedro River Basin.

Cooperation.- Records furnished by Office of Indian Affairs; records of dally diversion 

are available In files of that organization at Coolldge, Arlz.

Monthly diversions, In second-feet, water year October 1940 to September 1941

Month

May...........................

Mfljclroum

669

744

299

944

Minimum

332

E<EQ

Mean

213

Run-off 

In 

acre-feet

12 * 260

48 400

Water sluiced

above station 

(acre-feet)

OQ
GILA RIVER BASIN 273

Queen Greek near Florence Junction, Arlz.

Location.- Water-stage recorder, lat. 33°17'15", long. 111°19'30", In SWiNEi sec. 4, T.

 2 S., R. 10 E., at highway bridge three-quarters of a mile downstream from mouth of 

Whitlow canyon, If miles north of Florence Junction, and 3^ miles downstream from 

Whitlow dam site. Datum of gage Is 1,918.77 feet above mean sea level (unadjusted).

Drainage area.- 191 square miles.

Records available.- August 1939 to June 1941 (discontinued). January'1896 to August 1899

 ana February 1915 to September 1920 at several sites at or near Whitlow dam site (drainage area, 143 square miles).

Extremes.- Maximum discharge during period, 9,900 second-feet Dec. 31 (gage height, 9.62

 feet); no flow for parts of period.

1939-41: Maximum discharge, 13,200 second-feet Aug. 7, 1939 (gage height, 10.6 

feet, from floodmarlcs), by slope-area method; no flow part of each year.

Maximum discharge observed at Whitlow dam site, 10,000 second-feet, Aug. 1, 1919.

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

small diversions above station for irrigation and mining.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

6

6 

7 

S 

9 

10

11 

12 

15 

14 

16

16 

17 

18 

19 

20

21 

22 

25 

24 

25

26 

27 

28 

29 

50 

51

Oct.

0 

0 

0 

0 

76

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

1

121 

0 

0 

0 

0

NOT.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

436 

514 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

156 

655 

86 

0 

0

0 

46 

0 

0 

0

0 

0 

0 

867 

4S7

24 

4 

1 

0 

2.750 

3,020

Jan.

298 

92 

35 

9 

4

2

1 

1 

0 

0

20 

1,190 

170 

104 

81

55 

54 

25 

15 

6

1 

0 

0 

31 

256

108 

70 

519 

120 

62 

44

Feb.

25 

16 

9 

6 

6

4 

791 

165 

74 

56

56 

51 

40 

22 

15

14 

S 

5 

108 

74

49 

89 

85 

596 

980

181 

96 

74

Month

Dot 

No\ 

Dec

C

Jai 

Pet 

Ifai

Api

Jui 

Ju] 

Auj 

Se]

1

alendar year 19' 0... ...................

'11. .............. ...... .. . .

Ly. .....................................

he perlo

Mar.

. 218 

701 

170 

105 

518

116 

91 '66 

56 

50

45 

354 

704 

2,670 

3,010

701 

415 

263 

174 

159

129 

94 

69 

69 

52

41 

22 

21 

20 

20 

15

Apr.

729 

441 

310 

100 

SO

60 

50 

40 

40 

50

50 

142 

137 

100 

56

47 

40 

50 

20 

15

10 

5 

5

1 

0

0 

0 

0 

0 

0

Secondfoot-days

196 

949 

8,056

9,557

3,549 

3,491 

10,928 

2,516 

295 

0

-

May

108 

148 

24 

10 

5

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

Maximum

121 

514 

5,020

3,020

1,190 

980 

5,010 

729 

148 

0

-

June July

Minimum

0 

0 

0

0

0 

3 

16 

0 

0 

0

-

Aug.

Mean

6.4 

31.6 

260

25.5

108 

125 

555 

85.9 

9.5 

0

-

Sept.

Run-off In 

acre-feet

595 

1,880 

15,980

18,520

6,640 

6,920 

21,680 

4,990 

565 

0

59,070

discharge.- Dec. 24 (11 p.m.) 8,020 sec.-ft.; Dec. 50 (1:50 p.m.) 8,020 sec.-ft.5 Dec. 50 

>.m.) 8,940 sec.-ft.; Dec. 31 (12:50 p.m.) 9,900 sec.-ft.; Mar. 14 (8:50 p.m.) 8,320 sec.-

IT*. IK M o.n.-^ fi QSD OA*> -ftPeak

ft.; Mar. 15 (1 a.£71*6^980 seo!-ft.'

Note.- No gage-height record Mar. 28-31, Apr. 4-11, 17-24 and May 4-7; discharge computed on 

basis of one discharge measurement, three field estimates of flow, weather records, and groundwater records.
274- GILA RIVER BASIN

Santa Cruz River near Nogales, Ariz.

Location.- Water-stage recorder, lat. 31°21', long. 110°51', in NWi sec. 18, T. 24 S., 

K. 15 t;., unsurveyed, In Spanish land grant of Buena Vista, three-quarters of a mile 

downstream from International boundary and 5i miles east of Nogales.

Drainage area.- 542 square miles of which 357 square miles are In Mexico.

Records available.- May 1930 to December 1933, July 1935 to September 1941. March to 

novemoer 1907 and April 1909 to June 1920 (fragmentary), at site 5i miles downstream. 

April 1921 to June 1922 at site 6 miles downstream.

Extremes.- Maximum discharge during year, 1,9SO second-feet July 21 (gage height, 7.0 

reetj; no flow several periods during summer months.

1930-41: Maximum discharge, 14,000 second-feet Aug. 31, 1935 (gage height, 12.3 

feet), from rating curve extended above 3,000 second-feet; no flow for several days 

or parts of days each year.

Remarks.- Records good except those below 1 second-foot In July, August, and September, 

wnien are fair. Several small diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

1 

.9

1 

1 

1

1 

.7 

.4 

.5 

.9

.9 

.9

1 

1 

.7

.7 

.9

.9

1 

1

1 

1 

1 

1 

1

1 

1 

1 

2 

2 

2

HOT.

2

1 

1 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2

3 

4

4 

4 

4 

4 

4

4 

4 

3 

3 

4

Dec.

3 

3 

2 

2 

2

2 

2 

2

3 

4

4 

6 

6 

6 

6

6 

8 

8 

8 

S

8 

7 

7 

7 

8

S 

7 

7 

6 

9 

SO

Jan.

25 

16 

12 

10 

10

9 

9 

9 

9 

9

9 

9

S 

S 

8

8 

7 

7 

7 

6

6 

6 

5 

5 

5

5 

7 

43

31 

13 

11

Feb.

11 

11 

9 

9 

12

12 

127 

91 

29 

23

IS 

16 

16 

14 

14

14 

15 

15 

14 

IS

16 

20 

60 

60 

40

21 

22 

18

Month

Oct 

HOT

Dec

C

Jar 

Fel 

Mar 

Api 

Haj 

Jur 

Jul Aug

Sej 

H

alendar year 1940 ......................

rater year 1940-4

liar.

17 

16 

15 

14 

13

13 

13 

IS 

12 

13

12 

13 

12 

13 

14

12 

12 

11 

12 

10

9

10 

10 

S 

7

6 

4 

6 

6 

9 

S

Apr.

12 

13 

13 

12 

9

8 

7 

6 

5 

4

6 

13 

22 

14 

9

6 

3 

2 

4 

4

2 

2 

2 

2 

2

2 

2 

S 

2 

2

Secondfoot-days

31.4 

79 

195

3,901.6

332 

748 

343 

192 

46.3 

5.1 

543.6 

752.5 

40.7

3,308.6

Hay

2 

2 

2 

2

2

2 

2

1 

1 

1

2

1 

1 

1 

1

1 

1 

1 

1 

2

2 

2 

2 

2 

2

2 

2 

.9 

.5 

.9 

1

Maximum

2 

4 

30

273

43

127 

17 

22 

2 

-9 

167 

144 

15

167

June

0.9 

.9 

.4 

.5 

.2

.3 

.3 

.2

.3 

.4

.4

.2

.1 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

32 

0 

0

0 

0 

0 

0 

0

167 

129 

88 

121 

2

2

1 

.4 

.4 

.4

.4

Minimum

0.4

1 

2

0

5 

9 

4 

2 

.5 

0 

0 

.2 

0

0

Aug.

0.2 

.5 

.5 

61 

112

27 

100 

6 

58

11

2 

2 

2

144 

7

32 

116 

16 

2 

.S

.5

14 

2 

.5 

.4

.4

.3 

6 

15

13'

Mean

1.01 

2.6 

6.3

10.7

10.7 

26.7 

11.1 

6.4 

1.49 

.17 

17.5 

24.3 

1.36

9.06

Sept.

15 

a. 5 

a.2 

a.2 

a.2

3 

a.2 

a.2 

a.2 

a.2

14 

.7 

2 

.4 

.3

.2

.2 

.1

.1 

.1

.1 

.2

.2 

.1

.1

.1 

0 

.7 

.7 

.5

Run-off in 

acre-feet

62 

157 

387

7,740

659 

1,480 

680 

381 

92 

10 

1,080 

1,490 

SI

6,560

Peak discharge.- July 21 (4:30 p.m.) 1,980 sec.-ft.; July 22 (5 p.m.) 965 sec.-ft.j July 23 

(11 p.m.> &S5 sec.-ft.; Aug. 4 (8:45 p.m.) 658 sec.-ft.i Aug. 5 (4 p.m.) 725 see.-ft.: Aug. 7 

(4:15 p.m.) 1,020 sec.-ft.

a Ho gage-height record at low stages; discharge computed on basis of partial record and weather 

records.
GILA RIVER BASIN 

Santa Cruz River at Continental, Ariz.

275

Location.- Water-stage recorder, lat. 31°51', long. 110°59', In NEt sec. 23, T. 18 S., R. 

 13 I).", In Spanish land grant of San Ignaclo de la Canoa, at highway bridge at 

Continental.

Drainage area.- 1,640 square miles, of which 403 square miles are in Mexico. 

Records available.- May 1940 to September 1941.

Extremes.- Maximum discharge during year, 3,670 second-feet Aug. 9 (gage height, 5.4 

feet); no flow most of year.

1940-41: Maximum discharge, 12,100 second-feet Aug. 14, 1940 (gage height, 8.85 

feet) by float-area method; no flow during greater part of each year.

Remarks.- Records good except those below 10 second-feet, which are poor, 

diversions above station for irrigation.

Many small

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19

20

21 

28 

23

24 

25

26 

27 

28 

29 

30 

31

Oct.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0

o

o 

o

0 

0 

0

0 

0 

0 

0 

0

o 

.1

0 

0 

0 

0

Nov. Dec.

0 

0 

O 

0 

0

0 

O 

0 

0 

0

0 

O 

O 

0

o

0 

0

o

0 

0

0 

0 

0

o

0

o

0 

0

o

0 

14

Jan.

80 

2 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

o

0

0 

0

o 

o

0

0 

0 

0

o

0

0 

.4

.3 

0 

0 

0

Feb.

O 

0 

O 

0 

0

0 

11 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

o

0

0 

0 

0 

0 

0

o

0

o

Konth

Oct 

Noi 

Dec

C

Jar 

Pel 

Mai 

Apr 

Ma5 

Jur 

Jul 

Au6 

Sei

»

alendar year 19'10. .....................

ater year 1940-4

Mar. Apr.

Secondfoot-days

0.1 

0 

14

6,334.1

82.7 

11 

O 

0 

O 

0 

496 

341.5 

65

1,010.3

May

Maximum

0.1 

0 

14

3,080

SO 

11 

0 

0 

O 

0 

363 

195 

52

363

June July

O 

0 

0 

0 

0

0 

0 

0 

O 

0

0 

0 

0 

0

o

0

o

0 

0 

2

12 

90 

363 

29 

0

O 

0 

O 

0 

O 

0

Minimum

0 

0 

0

0

0 

0 

0 

0 

0 

0 

0 

0 

0

0

Aug.

O 

0 

0 

25 

14

a2 

al 

a.5 

195 

58

2

0 

14 

7 

20

aO 

aO 

a3 

aO 

0

0 

O 

0 

O 

O

0 

0 

O 

0 

0 

0

Mean

0.003 

0 

.5

17.4

2.67 

.4 

O 

0 

0 

0 

16.0 

11.0 

2.2

2.77

Sept.

0 

0 

0 

0 

0

0 

52 

11 

0 

0

0 

0 

0 

0 

0

0 

0

1

0

0

0 

0 

0 

0 

0

0 

0

1

0 

0

Run-off In 

acre-feet

0.8 

0 

28

12', 660

164 

22 

0 

0 

0 

0 

984 

677 

139

2,000

Peak discharge.- July 23 (5s30 p.m.) 3,190 sec.-ft.; Aug. 9 (6:10 p.m.) 3,670 sec.-ft.

a No gage-height record at low stages; discharge computed on basis of partial record, field estimates of flow Aug. 8 and 18, and weather records.
276 (JILA RIVER BASIN

Santa Cruz River at Tucson, Arlz.

Location.- Water-stage recorder, lat. 32°13', long. 110°59', In NEi sec. 14, T. 14 S., R.

 13 E.; at Congress Street Bridge In Tucson. Datum of gage is 2,327.16 fset above mean 

sea level, datum of 1929.

Drainage area.- 2,190 square miles, of which 403 square mllea are In Mexico. 

Records available.- October 1905 to September 1941. 

Average discharge.- 29 years (1912-41), 22.6 second-feet.

Extremes.- Maximum discharge during year, 2,490 second-feet Aug. 14 (gage height, 8.48 

reetj; no flow during greater part of year.

1905-41: Maximum discharge, about 15,000 second-feet Dec. 23, 1914, from ratingcurve extended above 9,000 eecond-feet; no flow during greater part of each year.

Remarks.- Records good above 20 second-feet, poor below. Many diversions above station

 ToFTrrlgatl on.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

Oct.

1 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0

0

0 

0 

0 

0 

0 

0

NOT.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

25

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

2 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

 0 

? 0 

, 0

, 0

- o

0 

0

le

16

Jan.

35 

5 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

1

251 

11

1 

0

Feb.

0 

0 

0 

0 

0

0 

89 

2 

12 

2

2 

1 

1 

0 

0

0 

0 

0 

0 

0

0 

4 

8 

0 

0

0 

0 

0

Month

Dot 

No\ 

Dec

C

Jar 

Pel 

Jfai 

Api 

Ha; 

Jur 

Ju3 

Auj 

Se;

H

lua

y......................................

Fater year 1940-4

Bar. Apr.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

1

0 

0 

0

0 

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Secondfoot-days

1 

25 

36

6,826

304 

61 

0 

1 

16 

0 

334 

1,082 

654

2,614

Bay

9 

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

Maximum

1 

25 

IS

4,270

251 

29 

0 

1 

9 

0 

246 

25C 

2S2

262

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

9 

245 

80 

0

0 

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 

148

20 

221 

150 

52 

99

0 

0 

0 

250 

68

58 

0 

0 

0 

0

0 

S 

1 

0 

0

0 

0 

0 

7 

0 

0

Mean

0.03 

.8 

1.2

18.7

9.8 

2.2 

0 

.03 

.5 

0 

10.8 

34.9 

21.8

6.S9

Sept.

0 

0 

0 

0 

0

0 

96 

3S 

0 

0

0 

0 

2S2 

0 

0

0 

2 

153 

0 

0

0 

0 

0 

0

0

0 

0 

100 

13 

0

Run-off in 

acre-feet

2 

60 

71

13, 640

603 

121 

0 

2 

32 

0 

662 

2,150 

1,300

4,990

, ?«** discharge.- July 23 (10 p.«.) 1,740 seo.-ft.; Aug. 6 (6sl6 p.«.) 1,840 sec.-ft.; Aug. 9 

(11830 p.«.) 1,690 seo.-ft.; Aug. 14 (6:50 p.«.) 2,490 seo.-ft.; Sept. 7 (7:40 p,«.) 1,640 aeo.- 

ft.; Sept. 13 (6 a.m.) 1,300 aeo.-ft.
OILA RIVER BASIN 277

Santa Cruz River at Rillito, Ariz.

Location.- Water-stage recorder, lat. 31°24', long. 111°09', in NEiSWi sec. 8, T. 12 S., 

 R. 12 E., 1 mile southeast of Rillito, 7f mil^i downstream from Caliada del Oro, and 

8f miles downstream from Rillito Creek. Datum of gage is 2,053.43 feet above mean 

sea level, datum of 1929. Supplementary staff gages and recording gage 900 feet upstream at different datum used at times during the year.

Drainage area.- 3,530 square miles.

Records available.- October 1939 to September 1941.

Extremes.- Maximum discharge during year, 7,800 second-feet Dec. 3i (gage height, 8.52 

feet); no flow during greater part of year.

1939-41: Maximum discharge, 17,000 second-feet Aug. 14, 1940 (gage height, 9.9 

feet); no flow during greater part of each year.

Remarks.- Records good except those prior to Mar. 14, which are poor. Many diversions 

at>ove station for irrigation.

Discharge, In eecond-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

SO 

31

00 1. Kov.

O

0 

0 

0 

0

0 

0 

0

0 

0

0 

0 

0 

0 

0

0 

0 

0 

350 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dee.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

220 

50 

15

0

0

5 

25 

0 

0

0 

0 

0 

0 

350

80 

2 

0 

0 

500 

4,000

Jan.

700 

100 

5 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

0 

0

0 

0 

0 

0 

0

0 

0 

300 

50 

10 

0

Feb.

0 

0 

0 

0 

0

0 

550 

300 

70 

SO

5 

0 

0 

0 

0

0 

0 

0 

0 

0

0

0 

40 

60 

15

40 

10 

0

Month

Oe1 

Hoi 

De

(

Jai 

Pel 

Hai 

Api 

Ma; 

Jui 

Ju. 

Auj 

Se

;

*il

Ly......................................

later year 1940-'

Mar.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

16 

ISO 

496

544 

111 

41 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Apr.

Seoondfoct-daya

0 

350 

5,247

15,784

1,165 

1,120 

1,358 

0 

7 

0 

302 

1,720 

1,082

12,331

May

0 

6

1 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Maximum

0 

350 

4,000

7,490

700 

550 

544 

0 

6 

0 

173 

682 

455

4,000

June July

0 

0 

0 

0 

0

0 

7 

4

0 

0

0 

0 

0 

0 

0

0 

5

0 

0

1

0

1

108 

173 

3

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 

171

13 

86 

682 

319 

124

6 

1 

0 

199 

61

58 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Mean

0 

11.7 

169

43.1

37.6 

40.0 

43.2 

0 

.2 

0 

9-7 

55.5 

36.1

33.8

Sept.

0 

0 

0 

0 

0

0 

0 

128 0- 

0

0 

0 

339 

0 

0

0 

0 

455 

6

1

0

0 

0 

0 

0

0 

0 

110 

43 

0

Run- off In 

acre-feet

0 

694 

10,410

31,300

2,310 

2,220 

2,650 

0 

14 

0 

599 

3,410 

2,150

24,460

a discharge.- Dec. 31 (5 a.m.) 7,600 sec.-ft.J Aug. 8 (2:40 a.m.) 6,000 sec.-ft.; Aug. 9 

(12:15 a.m.) 2,720 sec.-ft.; Aug. 14 (9 p.m.) 2,740 see.-ft.
276 GILA RIVER BASIN

Santa Cruz River near Laveen, Ariz.

* 

Location.- Water-stage recorder, lat. 33°13', long. 112°10', In NEiNE*'sec. 29, T. 2 S., 

 R. 2 E., on Gila River Indian Reservation, at highway bridge 3 miles south of Koraatke, 

9 miles upstream from mouth, and 9* miles south of Laveen. Datum of gage Is 1,021.1 

feet above mean sea level, adjustment of 1912 (levels by Office of Indian Affairs).

Drainage area.- 8,970 square miles.

Records available.- January 1940 to September 1941.

Extremes.- Maximum discharge during year, 1,580 second-feet Mar. 15 (gage height, 10.03 

feet); no flow Oct. 1-4.

1940-41: Maximum discharge, that of Mar. 15, 1941; no flow on several days 

during each year.

Remarks.- Records good. Several diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

IS

16 

17 

18 

19 

20

21 

22 

23 

24

25

26 

27 

28 

29 

30 

31

Oct.

0 

0 

0 

0 

233

135 

20 

8 

2 

.8

.7 

.5 

.4 

.4 

.4

.4 

.4 

.4 

.4 

.4

.4 

.4 

.4 

.4 

.4

4 

4 

2

1 

.7 

.7

Nov.

0.7 

.7 

.7 

.6 

.5

.4 

.4 

.4

.5 

.5

.5 

.5 

.5 

.7 

.7

.7 

.7 

.7 

169 

476

237 

63 

69 

31 

14

9 

6 

5 

4 

3

Dec.

3 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

15 

6 

7

6 

24 

5 

3 

3

3 

3 

3 

9 

13

5 

11 

S 

6 

360 

955

Jan.

952 

1,150 

667 

460 

103

40 

20 

10 

7 

6

4 

3 

S 

22 

2S

12 

11 

10 

8 

6

5 

4 

5 

6 

8

5 

5 

5 

10 

17 

19

Feb.

11 

9 

7 

14 

12

8 

48 

SI 

277 

98

56 

22 

14 

10 

9

8 

7 

7 

7 

64

S4 

131 

2S 

26 

145

262 

210 

41

Month

Oct

NOT!

Doc 

C

Jar 

Fet 

Mar 

Apr 

Ma3 

Jun 

Jul 

Aug 

Sej

fl

alendar year 194

ater year 1940-4H . .

Mar.

23 

234 

112 

43 

261

463 

470 

146 

47 

20

19 

50 

647 

931 

1,460

887 

592 

17S 

141 

77

74 

63 

49 

40 

25

15 

10 

8 

8 

S 

9

Apr.

52 

69 

74 

49 

16

10 

9 

9 

9 

9

10 

526 

725 

508 

67

13 

9

e

8 

9

9 

8 

8 

8 

8

e

8 

8 

7 

7

Secondfoot-days

407.6 

1,096.3 

1,470

6,103.7

3,616 

1,696 

7,110 

2,268 

429 

51 

1,060.4 

726.3 

406.9

20,337.5

May

2C 

142 

9S 

51

S

a 11 

e

E 

4

4 

4

4 

4 

4

4 

4 

4 

4 

4

4 

4

3 

3 

3

3 

3 

3 

3 

3 

3

Maximum

223 

476 

955

955

1,150 

277 

1,460 

725 

142 

3 

461 

208 

150

1,460

June

3 

3 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2 

2 

2 

1

1

2

1 

1 

1 

1

1 

1 

1 

1 

1

July

1 

1 

.9 

.9 

.8

.e 

.s 

.s

.8 

.8

.8 

.8 

.8 

.8

1

.9 

1 

.8 

.8 

.7

.7 

.7 

192 

301 

461

64 

16 

4 

2 

1 

2

Minimum

0 

.4 

2

0

3 

7 

8 

7 

3 

1 

.7 

.4 

.9

0

Aug.

4 

3 

1 

.7 

2

1 

208 

11 

2 

48

110 

50 

8 

S 

19

42 

36 

16 

4 

2

2 

3 

4 

3 

2

1 

.7 

.5 

.4 

126 

8

Mean

13.1 

36.5 

47.4

16.7

117 

60.6 

229 

75.6 

13.8 

1.7 

34.2 

23.4 

13.6

55.7

Sept.

5 

2 

2 

1 

3

4 

2 

2 

2 

2

i 

2 

7 

4 

3

2

1 

1 

2 

6

2

1 

2 

4

1 

.9 

77 

114 

150

Run-off In 

acre-feet

808 

2,170 

2,920

12,100

7,170 

3,360 

14,100 

4,500 

851 

101 

2,100 

1,440 

807

40,330

Peak discharge.- Dec. 31 (S:50 a.m.) 1,120 sec. -ft.; Jan. 2 (1:30 p.m.) 1.230 aec.-ft.j Mar. 13

a.m. , sec.-,; 

(5:45 p.m.) 950 sec.-ft.
GILA RIVER BASIN 

Sonolta Creek near Patagonia, Arlz.

279

Location.- Water-stage recorder, lat. 31 ''SO 1 , long. 110°49', In sec. 21, T. 22 s., R. 15 

K., unsurveyed, in Spanish land grant of San Jose de Sonolta, 5 miles downstream from 

Patagonia. Prior to Mar. 6, 1940, water-stage recorder 2,700 feet downstream at datum 

18.00 feet lower.

Drainage area.- 210 square miles.

Records available.- June 1930 to December 1933, July 1935 to September 1941.

Extremes.- naximum discharge during year, 2,150 second-feet Aug. 9 (gage height, 8.02 

reet); no flow on several days In July.

1930-41: Maximum discharge, about 20,000 second-feet sometime in August 1934 (gage 

height, 18.0 feet, present site and datum, from floodmarks), by slope-area method; no 

flow for several days during summer of each year.

Remarks.- Records good except those for periods of no gage-height record and those for 

Aug. 3-9, which are fair. Several small diversions above station for irrigation and 

mining. Low-water records at present site not comparable with those at former site; 

for comparison, results of low-water discharge measurements, in second-feet, during 

water year 1941, made at the present site and former site, 2,700 feet downstream, are 

given below.

Oct. 17.

Nov. S.

Dec. 5.

17.

Jan. S.

23.

Feb. 24.

Discharge measurement

Present alte

0.76

1.23

1.78

18.1

19. S

3.09

36.1

Former site

1.87

2.83

2.96

19.7

20.7

4.51

39.0

Hap. 17.

Apr. 17.

Hay 19.

June 29.

July 28.

Sept. 17.

24.

Discharge measurement

Present site

3.33

2. Si

1.09

.44

0

2.26

2.01

Former site

4.64

3.91

2.34

1.14

.65

3.71

3.22

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

81 

88 

23 

84 

25

26 

27 

28 

29 

30 

31

Oct.

1 

.8

1 

1

1

1 

.S 

.8 

.3 

1

1 

1 

2

1

1

1 

1 

1

1 

1

1 

1 

1 

1 

1

1 

1 

2 

1 

2 

2

NOT.

2 

2 

1 

2 

2

2 

2 

2 

2 

2

2 

1 

1 

1 

2

1 

2 

2 

3 

2

2 

2 

2 

2 

2

2 

2 

1 

2 

2

Dec.

2 

2 

2 

2 

2

2 

2 

2 

2 

2

3 

4 

3 

3 

2

2 

12 

5 

3 

2

1 

1 

1 

2 

4

3 

3 

3 

3 

3 

292

Jan.

89 

23

16 

19 

20

20 

16 

13 

10 

10

9 

9 

8 

8 

7

7 

7 

6 

9 

7

6 

6 

3 

8 

3

3

S 

44 

26 

24 

24

Feb.

23

19 

19 

19 

22

24 

92 

48 

27 

27

27 

23

10 

8 

7

6 

14 

26 

20 

26

12 

25 

87 

44 

38

SS 

32

27

Month

Ocl 

NOT 

Dac

C

Jar 

Pel 

Hai 

Api 

Maj 

Jur 

Ju] 

. AUJ 

Sei

1

alendar year 19 10.. ....................

y..... .................................

later year 1940-

Mar.

24 

24 

22 

20 

17

16 

9 

7 

7 

7

6 

6 

6 

5 

4

4 

3 

3 

3 

S

3

2 

2 

2 

2

2 

2 

2 

2 

2 

2

Apr.

S 

3 

4 

S 

3

3 

S 

3 

3 

S

3 

4 

S 

3 

S

3 

S

2 

2 

2

2 

2 

1 

1

1

2 

2 

.8 

2 

2

Secondfoot-days

34. S 

55 

375

1,849.3

462 

790 

219 

74.8 

37.8 

17.6 

29.7 

394.9 

10S

2,593.0

May

2 

2

1 

1 

.6

.5 

.8 

.6 

.5 

.5

.5 

.5 

,4 

.4

.S

.3 

.4 

.5

1 

2

2 

3 

3 

3

2

2 

2 

2 

1 

1 

1

Mnirlmiim

2 

2 

292

292

89 

92 

24 

4 

3 

1 

19 

131 

19

292

June

0.9 

.9 

.6 

.6 

.6

.6 

.6

1 

1 

1

1 

.S 

.8 

.6 

.6

.6 

.6 

.5 

.5 

.5

.5 

.4 

.4 

.4 

.3

.3 

.3 

.3

.2 

.2

July

0.3

.1 

.1 

.2

.1

.4 

.S 

.3 

.4 

.1

.1 

0 

0 

.1 

0

1

0 

0 

0

.1 

.1

2 

19 

2 

.6

.5 

.5 

.4 

.3 

.4 

.3

Minimum

o.e 

1

1

0

2 

6 

2 

.8 

.3 

.2 

0 

.4 

1

0

Aug.

0.4 

.5 

5 

IS 

3

3 

13 

2 

181 

30

S 

2 

51 

30 

15

3

2 

2

2

2 

8 

2 

2 

2

2 

1 

2 

3 

S 

5

Mean

1.10 

1.8 

12.1

5. OS

14.9 

88.2 

7.1 

2.49 

1.22 

.59 

.96 

18.7 

3.4

7.10

Sept.

4 

8 

8 

1 

1

8 

3 

8 

1 

1

6 

3 

4

3 

3

S 

8 

19 

5 

4

3 

8 

8 

8 

8

8 

2 

9 

5 

3

Run-off In 

acre-feet

68 

109 

744

3,670

916 

1,570 

434 

148 

75 

35 

69 

785 

804

6,140

Peak discharge.- Dec. SI (S p.m.) 474 sec.-ft.; Aug. 9 (6:20 p.m.) 2,150 sec.-ft. 

note.- Ho gage-height record June 14-28 and Sept. 19-83; discharge computed on basla of partial 

gage-height record, weather records, and Interpolation.
280 GILA RIVER BASIN

Rlllito Creek near Wrightstown, Arlz.

Location.- Water-stage recorder, lat. 32°1&S ,iong. 110°51', In NEiNEi sec. 31, T. 13 

s., R. 15 E., at highway bridge 1 mile downstream from Sablno Creek, 2 miles upstream 

from Pantano Wash, and 34 miles northwest of Wrightstown.

Drainage area.- 221 square miles.

Records available.- June 1940 to September 1941.

Extremes.- Maximum discharge during year, 9,000 second-feet Dec. 30 (gage height, 7.85 

feet); no flow during greater part of several months.

1940-41: Maximum discharge, that of Dec. 30, 1940; no flow during parts of each 

year.

Remarks.- Records good. Several small diversions above station for Irrigation.

Discharge, In second-feet, water year Ootober 1940 to September 1941

Day

1 

2 

3

4

a

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22

23 

24 

25

26 

27 

2S 

29 

30 

31

Oot. Nov.

0 

0 

0 

0

6

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0

us1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

145 

715 

215 

65 

31

17 

159 

17S 

71 

47

31 

23 

14 

9 

9S1

200 

109 

65 

45 

1,710 

2,360

Jan.

326 

363 

220 

134 

S2

37 

63 

56 

45 

42

76 

97 

32 

«3 

45

35 

23 

17 

13 

11

9 

10 

9 

9 

14

26 

21 

454 

303 

178 

113

Feb.

79 

60 

49 

38 

33

.4? 808

4?§

If!

mi&73 

53

|7 

45 

45 

45 

S3

53 

60 

386 

265 

271

244 

153 

123

Month

Oot 

NOT

Dec

C

Jar 

Pet 

Mar 

Api 

Haj 

Jur 

Jul 

AUJ 

Sej

1

alendar year

ater year 1940-4

Peak discharge. -

(4rS6 p.m. J 2,560 !

Mar.

106 

109 

100 

71 

143

116 

79 

51 

36 

20

13- 

42 

309 

646 

1,120

762 

396 

265 

133 

119

90 

74 

60 

45 

35

30 

26 

14 

11 

10 

10

Apr.

17 

38 

71 

49 

36

33 

28 

19 

10 

9

13 

13 

18 

13 

9

S 

7 

6 

6 

7

6 

6 

5 

5 

5

5 

5

4 

3 

3

Secondfoot -days

0 

119 

7,690

-

3,521 

4,412 

5,096 

457 

120.S 

0 

336.2 

.3 

7.9

21,760.2

Bay

3 

4 

5 

9 

9

9 

9 

11 

11 

9

S 

7 

5 

4 

3

3

2 

2

1 

1

.9 

.9 

.3 

.7 

.6

.6 

.5 

.4 

.3 

.1 

0

Maximum

0 

113 

2,360

-

S26 

808 

1,120 

71 

11 

0 

210 

.2 

1

2,360

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

210 

103 

IS

3 

1 

.6 

.5 

.1 

0

Mlnisnun

0 

0 

0

-

9

38 

10 

3 

0 

0 

0 

0 

0

0

Aug.

0 

0 

0 

0 

0

0 

0 

.3 

0 

0

0

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

o

Q

80 

0

Mean

0 

4.0 

248

-

114 

168 

164 

15.2 

3.90 

0 

10.8 

.01 

.26

59.6

Sept.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

b

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

7

8'9

Run-off in 

acre-fee^.

0 

236 

15,250

, - _ __

6;98B 

.&,7S|3 

lojj.10

906 

240 

0 

667 

.6 

16

43,200

Dec. 25 (3:30 a.m.) 2,140 sec. -ft.; Dec. 30 (11:25 p.m.) 9,000 sec. -ft.; Dee. 31 

eo.-ft.j Feb. 7 (U«30 a.m.) 1,300 aec.-ft.j Bar. 14 (3 p.m.) 1,520 sec, -ft. j
01 LA RIVER BASIN 281

Rillito Creek near Tucson, Ariz.

Location.- Water-stage recorder, lat. 32°18', long. 110°59', in sec. 23, T. 13 S-, R. 13 

 E., 'at Oracle Road Bridge, 4 miles upstream from mouth and 4 miles north of Tucaon. 

Datum of gage is 2,290.78 feet above mean sea level, datum of 1929.

Drainage area.- 903 square miles.

Recorda available.- January 1911 to September 1941.

Average discharge.- 28 years (1913-41), 25.9 second-feet.

Extremes.- Maximum discharge during year, 9,900 second-feet Dec. 31 (gage height, 9.70 

feet): no flow during greater part of year.

 1911-41: Maximum discharge, 28,000 second-feet Dec. 23, 1914, estimated by the 

Arizona Agricultural Experiment Station in 1941 on the 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 fair except those for periods of no gage-height record, which are poor, 

several small diversions above atation for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Da?

1 

2 

3 

4 

5

6 

7 

8 

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 

0

0 

0 

0 

0 

0

0 

0 

0 

SI 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

8 

480 

100 

1 

0

0 

40 

50 

10 

1

0 

0 

0 

0 

600

100 

5 

0 

0 

1.060 

3,990

 Tan.

604 

177 

52 

5 

1

1 

0 

0 

0 

0

0

1

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

343 

154 

a40 

a2

Feb.

0 

0 

0 

0 

0

0 

606 

441 

183 

104

a60 

a50 

a30 

a5 

0

0 

0 

0 

0 

0

0 

0 

117 

SOB 

a!40

a!20 

alOO 

a70

Month

Oct 

Noi 

Dec

C

Jar 

Pel 

Mai 

Api 

Ma: 

Jui 

juJ 

Auj 

Sej

1

alendar year 19'.10... ...................

11. ....................................

rater year 1940-'

Mar.

a40 

a40 

a40 

a30 

a45

a60 

a25 

a!5 

a5 

al

0 

0 

154 

433 

815

726 

394 

268 

194 

118

61 

a35 

a!5 

a5 

0

0 

0 

0 

0 

0 

0

Apr.

Secondfoot -days

0

ai

6,445

10,734

1,380 

2,234 

3,519 

0 

0 

0 

SO 

935 

325

14,999

May

Maximum

0 

SI 

3,990

3,990

604 

606 

815 

0 

0 

0 

57 

4S7 

265

3,990

June July

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

14 

57 

9 

0

0 

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

1

0 

24S 

487 

137 

0

0 

0 

0 

14 

44

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

2 

2 

0

Mean

0 

2.7 

208

29.3

44.5 

79. 8 

114 

0 

0 

0 

2.6 

30.2 

10.8

41.1

Sept.

0 

0 

0 

0 

0

0 

0 

al 

0 

0

0 

0 

39 

1 

0

0 

0 

265 

6 

0

0 

0 

0 

0 

0

0 

0 

11 

2 

0

Run-off In 

acre-feet

0 

161 

12,780

21,290

2,740 

4,430 

6,980 

0 

0 

0 

159 

1,860 

645

29,740

Peak discharge.- Dec. 31 (1:45 a.m.) 9,900 sec.-ft.; Feb. 7 (1:45 p.m.) 1,540 sec.-ft.; Mar. 15 

(11:15 p.m.) 1,320 sec.-ft.; Aug. 7 (11:30 p.m.) 7,040 sec.-ft.; Aug. 8 (11:45 p.m.) 1,360 sec.- 

ft.; Sept. 18 (12:30 a.m.) 1,640 sec.-ft.

a No gage-height record; discharge computed on basis of five discharge measurements, field estimates, weather records, and records for Rillito Creek near ffrightstoim'and for Pantano Wash near 

Tuoson. . . _
282 GILA RIVER BASIN

Sablno Creek near Tucson, Arlz.

Location.- Water-stage recorder and concrete control, lat. 32°19', long. 110°49', In Ei

 sec. 9, T. 13 S., R. 15 E., half a mile north of Coronado National Forest boundary 

and 12 miles northeaet of Tucson.

Drainage area.- 35.0 square miles.

Records available.- June 1932 to September 1941.

Extremes.- Maximum discharge during year, 3,180 second-feet Dec. 30 (gage height, 7.13 

feet); minimum, 0.01 second-foot June 29 to July 14.

1932-41: 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 several years.

Remarks.- Records excellent except those for Mar. 12-22 and July 23 to Sept. 30, which

 are good. No diversions above statlbn. Slight regulation by several small dams 

constructed to provide recreational lakps.

Discharge, In second-feet, water year October 1940 to September 1941

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 

SB 

SO 

50 

31

Oot.

0.08 

.06 

.04 

.04 

20

14 

4.6 

2.2 

1.2 

.9

.6 

.4 

.3 

.3 

.2

.1 

.06 

.04 

.04 

.03

.03 

.03 

.03 

.03 

.03

.03 

.04 

.04 

.04 

.04 

.04

HOT.

0.04 

.04 

.04 

.04 

.04

.04 

.06 

.06 

.06 

.06

.06 

.08 

.08 

.04 

.04

.04 

.04 

.06 

128 

24

12 

7.5 

6.5 

6.2 

5.1

4.4 

3.9 

3.6 

3.4 

3.2

Dec.

3 

2.7 

2.5 

2.5 

2.4

2.2 

2 

1.6 

1.6 

3.6

125 

268 

105 

46 

28

21 

116 

S6 

49 

31

23 

IS 

15 

37 

383

110 

62 

42 

32 

803 

597

Jan.

226 

131 

90 

68 

55

53 

44 

39 

33 

35

7S 

82 

62 

46 

36

30 

24 

81 

IS 

15

14 

12 

11 

11 

18

23 

IS 

126 

100 

67 

49

Feb.

41 

34 

29 

25 

. 30

34 

182 

US 

100 

95

S4 

76 

59 

46 

38

35 

32 

30 

36 

41

41 

50 

133 

112 

119

107 

82 

76

Month

Oot 

Noi 

Dec

C

Jan 

Pel 

Mar 

Apr

Jun 

Jul 

Aug 

8ej

*

alendar year 19 10. .....................

ater year 1940-4]

Mar.

72 

82 

73 

58 

64

59 

48 

48 

35 

30

26 

69 

165 

256 

380

225

145 

114 

93 

72

58 

47 

38 

33 

28

24

21 

19 

17 

16 

16

Apr.

23

37 

40 

36 

30

27 

24 

21 

18 

17

16 

21 

25 

23 

21

18 

16 

15 

15 

13

12 

11 

10 

9.6 

9.2

10 

11 

11 

10 

10

Secondroot-days

45.57 

208.72 

3,015.1

4,506.48

1,635 

1,825 

2,453 

559. S 

223.4 

4.11 

349.44 

190.3 

165.55

10,674.99

May

12 

16 

14 

12 

11

13

15 

15 

15 

14

12 

10 

S.9 

7.8

e.e

5.9 

4.S 

4.1 

3.6 

3.6

3.2 

3 

2.7 

2.2 

1.8

1.6 

1.5 

1.2 

1 

.9 

.8

Maximum

20 

188 

60S

803

226 

133 

3SO 

40 

16 

.7 

166 

36 

69

803

June

0.7 

.6 

.5 

.4 

.4

.3 

.3

.2 

.1 

.1

.08 

.06 

.04 

.03 

.02

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.02 

.02

.02 

.02 

.02 

.01 

.01

July

0.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.1

.7 

.6 

.4 

.3 

1.2

1.4 

14 

104 

166 

31

12 

7.2 

4.4 

2.7 

1.8 

1.5

Minimum

0.03 

.04 

1.6

0

11 

85 

16 

9.2 

.8 

.01 

.01 

.6 

.08

.01

Aug.

1.2 

.8.6 

.9 

.9

.7 

6.5 

8.6 

7.7 

4.S

3.2 

2.4 

1.6 

9.S 

36

32 

12 

7.8 

5.7 

6.3

5.6 

3.9 

11 

6.6 

3.9

3 

2.2 

1.5 

1.2 

1.1 

.8

Mean

1.47 

6.96 

97.3

12.3

52.7 

65.2 

79.1 

IS. 7 

7.21 

.137 

11.3 

6.14 

5.52

29.2

Sept.

0.6 

.5 

.3 

.2 

.1

.1 

.08 

.08

.04 

.03

.02 

3.5 

35 

6.8 

3.6

2.0 

1.2 

1.1 

2.2

2.0

1.4 

1.1 

.9 

.7 

.6

.4 

.4 

69 

2S 

8.6

Run-off In 

acre-feet

90 

414 

5,980

8,930

3,240 

3,680 4,870' 

1,11O 

443 

8.2 

693 

377 

388

21,170

Peak dlaeharggs.- HOT. 19 (5:30 p.m.) 4S3 sec.-ft.; Dec. 24 (Ils45 p.m.) 1,180 aee.-ft.; Dee. 

(6t3O p.m.) 3,180 sec.-ft.; Mar. 14 (11:30 a.m.) 500 sec.-ft.; Har. 15 (5 p.m.) 525 sec.-ft.; 

July 24 (8j30 a.m.) 516 sec.-ft.
01 LA RIVER BASIN 283

Pantano Wash near Tucson, Ariz;.

Location.- Water-stage recorder supplemented by staff gage, lat. 32°15', long. 110°51',

 NEiNWi sec. 6, T. 14 S., R. 15 E., at highway bridge, l£ miles upstream from mouth 

and 7 miles east of Tucson.

Drainage area.- 602 square miles.

Records available.- June 1940 to June 1941 (discontinued).

Extremes.- Maximum discharge during period, 300 second-feet Dec. 31 (gage height, 2.10

 feet); no flow during greater part of period.

1940-41: Maximum discharge, 9,200 second-feet Aug. 13, 1940 (gage height, 4.50 

feet); no flow during greater part of each year.

Remarks.- Records poor. Several small diversions above station.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3

4 

5

6 

7 

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. Nov.

0 

0 

0 

0

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

1

3

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

Dec.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

2 

0 

0 

0

0 

4 

0 

0 

0

0 

0 

0 

0 

30

1 

0. 

0 

0 

10 

130

Jan.

6O 

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 

50 

0 

0 

0

Feb.

0 

0 

0 

0 

0

0 

15 

10 

0 

0

0 

0

0 

0 

0

0 

0 

0 

0 

0

0 

2 

0 

0 

0

0 

0 

0

Month

Oot 

Noi 

De<

£

Jai 

Pel 

Mai 

Api 

Ma, 

Jut 

Ju3 

Auj 

Sei

1

alendar year

"he perlo

Mar.

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0

1

1 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0 

0

Apr.

Secondfoot-days

0 

4 

177

-

110 

27 

2 

0 

0 

0

-

May

Maximum

0 

3 

130

-

60 

15 

1 

0 

0 

0

-

June July

Minimum

0 

0 

0

-

0 

0 

0 

0 

0 

0

-

Aug.

Mean

0 

.1 

5.7

-

3.5 

1.0 

.1 

0 

0 

0

-

Sept.

Run-off In 

acre-feet

0 

8 

351

-

218 

54 

4 

0 

0 

0

635

Note.- No gage-height record except part of Dec. 31; discharge computed on basis of partial reoor 

three discharge measurements, many staff gage readings and floodmarks, many field estimates of flon

and comparison with records of Rllllto Creek near Wrlghtstown and near Tuoson. 

461676 O-42-19
234 OILA RIVER BASIN

Salt River near Chrysotlle, Arlz.

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 U. S. Highway 60, 5i miles northeast of Chrysotlle, and 8 miles upstream 

from Cibecue Creek. Datum of gage is 3,353.3 feet above mean sea level, datum of 

1929.

Drainage area.- 2,830 square miles.

Records available.- September 1924 to September 1941.

Average discharge.- 17 years, 687 second-feet.

Extremes.- Maximum discharge during year, 52,200 second-feet Mar. 14 (gage height, 15.08 

reet); minimum, 153 second-feet Nov. 18 (gage height, 1.67 feet).

1924-41: Maximum discharge, 52,900 second-feet Feb. 7, 1937 (gage height, 15.18 

feet); minimum, 89 second-feet July 14, 1939 (gage height, 1.39 feet).

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

fair. Several small diversions above station.

Discharge, In second-feat, water year October 1940 to September 1941

Day

1 

8 

3 

4 

5

6 

7 

S 

9 

10

11 

18 

13 

14 

IS

16 

17 

18 

19 

20

81 

22 

S3 

84 

85

26 

27 

28 

89 

30 

31

Oot.

1,800 

636 

656 

S42 

1,110

639 

463 

414 

357 

324

309 

294 

879 

879 

265

842 

233 

£20 

211 

203

194 

190 

182 

179 

175

186 

277 

428 

260 

274 

251

Nov.

237 

280 

815

211 

211

207 

199 

190 

190 

203

194 

182 

182 

171 

164

164 

164 

175 

1,820 

1,310

715 

621 

495 

496 

488

470 

397 

374 

346 

357

Dec.

357 

362 

385 

397 

414

414 

420 

438 

480 

444

652 

8,890 

6,440 

3,400 

1,820

1,180 

1,180 

8,270 

1,870 

1,420

1,130 

969 

873 

2,230 

12,600

3,580 

1,940 

1,470 

1,300 

8,520 

11,500

Jan.

6,320 

3,050 

1,870 

1,390 

1,140

1,130 

1,010 

866 

822 

797

7,170 

12,100 

5.940 

3,000 

2,310

1,990 

1.580 

1,280 

1,070 

1,010

960 

881 

839 

805 

1,600

8,220 

1,360 

2,170 

5,000 

1,990 

1,690

Feb.

1,330 

1,100 

925 

847 

S31

80S 

2,080 

3,950 

8,870 

1,580

1,580 

1,760 

1,930 

1,640 

1,580

1,690 

1,990 

8,180 

8,620 

3,110

3,440 

3,800 

3,800 

3,710 

4,220

5,470 

2,960 

2,450

Month

Oct 

Ho\ 

Dec

C

Jar 

Pel 

Mai

Api

%

Ju3

*°* 

Sej

V

raary

 11. ...... . .

Fater year 1940-41 ......................

liar.

2,240 

8,890 

3,360 

2,520 

8,310

8,660 

2,240 

1,930 

1,690 

1,640

1,680 

1,640 

6,980 

31,100 

28,300

12,700 

7,180 

5,870 

4,660 

4,360

4,160 

3,710 

3,280 

3,360 

3,360

3,030 

2,660 

2,660 

2,680 

3,360 

3,600

Apr.

4,650 

5,710 

6,420 

5,160 

4,070

3, -980 

3,620 

3,280 

3,360 

3,680

3,800 

3,680 

3,980 

4,850 

4,460

3,800 

3,710 

3,890 

3,530 

3,190

8,880 

2,660 

2,590 

2,520 

2,880

3,440 

4,070 

4,650 

5,060 

5,270

Secondfoot -days

11,678 

H.,267 

67,159

208,317

76,240 

66,638 

163,380 

118,710 

140,740 

35,666 

16,945 

16,392 

13,661

' 735,860

toy

5,600 

5,490 

4,960 

5,600 

6,930

8,040 

8,340 

8,040 

7,470 

7,470

7,400 

7,200 

6,800 

5,900 

5,000

4,600 

4,200 

3,700 

3,300 

2,900

2,600 

2,300 

2,000 

1,800 

1,800

1,900 

2,000 

1,950 

1,900 

1,850 

1,800

Maximum

1,200 

1,820 

12,600

18,600

18,100 

5,470 

31,100 

6,420 

8,340 

1,750 

956 

2,230 

3,890

31,100

June

1,750 

1,670 

1,580 

1,520 

1,520

1,580 

1,470 

1,470 

1,420 

1,280

1,140 

1,010 

969 

987 

1,030

1,060 

1,050 

' 1,090 

1,130 

1,130

1,120 

1,110 

1,090 

1,090 

1,020

978 

907 

847 

797 

741 

-

July

679 

641 

605 

576 

583

606 

569 

555 

568 

508

463 

438 

408 

403 

397

385 

438 

528 

687 

831

797 

679 

955 

634 

627

521 

457 

408 

368 

335 

309

Minimum

175 

164 

357

96

797 

806 

1,580 

8,520 

1,800 

741 

309 

269 

194

164

Aug.

289 

874 

869 

308 

564

500 

435 

385 

671 

2,230

575 

420 

438

496 

508

470 

664 

564 

601 

476

444 

601 

562 

496 

438

397 

352 

324 

304 

330 

324

Mean

377 

376 

2,166

563

2,427 

8,344 

5,270 

3,957 

4,540 

1,185 

547 

497 

458

8,014

Sept.

304 

294 

279 

256 

242

228 

220 

280 

211 

807

199 

199 

194 

301 

326

260 

251 

233 

237 

246

851 

242 

228 

233 

824

216 

811 

1,530 

3,890 

1,630

Run-off In 

acre-feet

23,150 

28,360 

133,200

401,300

149,200 

130,200 

324,100 

236,600 

279,200 

70,820 

33,610 

30,630 

26,900

1,488,000

''SSM.iW'SSSS.:- Dec< 13 < 8s4° » » > B r s*° « * *-} r>*«- «* («»lfr n.n,} »»,«» son. -ft. i Doc. 31

any o JOIBU p.m. i o,t»u sec.-n;»

Hote.- No gage-height record May 11 to June 8; discharge computed on baala of raoords for station 

near Roosevelt.
01 LA. RIVER BASIN 285

Salt River near Roosevelt, Arlz.

Location.- Water-stage recorder, lat. 33°37', long. 110°55', in NEi sec. 9, T. 3 N., R. 

j.4 E., unsurveyed, 100 feet downstream from bridge on Globe-Young highway, a quarter 

of a mile downstream from Final Creek, l 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.- October 1913 to September 1941.

Average discharge.- 28 years, 1,014 second-feet.

Extremes.- Maximum discharge during year, 117,000 second-feet Mar. 14 (gage height, 24.4 

reetj 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, 205 

second-feet Oct. 25 (gage height, 5.87 feet).

1913-41: Maximum discharge, that of Mar. 14, 1941: minimum, 91 second-feet June 

30, 1934.

Minimum discharge known, about 42 second-feet Aug. 5, 1911.

Remarks.- Records excellent except those above 50,000 second-feet, which are good.

several small diversions above station for irrigation. During the year 222 discharge 

measurements were made. See pp. 288 ,289 for records for Tonto Creek, which also 

contributes to Roosevelt Reservoir.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

S

t

6 

7

ii 

13 

IS 

14 

16

16 

17 

16 

19 

80

SI 

SS 

23 

84 

86

S6 

37 

88 

86 

SO 

31

Oet.

1,390 

987 

75S 

616 

1,110

1,270 

596 

466 

440 

392

361 

348 

331 

319 

306

886

274 

259 

255 

247

233 

226

219 

212 

208

245 

418 

807 

428 

344 

352

ROT.

327 

306 

29S 

290 

278

874 

867 

259 

255 

255

255 

844 

240 

237 

226

282 

222 

263 

1,600 

1,890

1,110 

744 

622 

585 

879

585 

533 

469 

440 

430

Dee.

444 

435 

444 

459 

474

486 

496 

496 

501 

511

624 

2,300 

7,S70 

4,890 

2,380

1,600 

1,340 

2,130 

2,460 

1,780

1,450 

1,220 

1,100 

1,970 

21; 900

5,660 

2,740 

1,840 

1,890 

4,090 

17,300

Jan.

11,100 

4,580 

2,780 

8,050 

1,720

1,590 

1,450 

1,230 

1,130 

1,050

13,500 

16,800 

3,850 

4,260 

3,180

2,560 

2,120 

1,720 

1,450 

1,360

1,240 

1,190 

1,100 

1,020 

2,010

2,840 

1,940 

8,060 

5,900 

3,060 

2,560

Feb.

2,120 

1,650 

1,370 

1,810 

1,160

1,110 

8,210 

5,530 

3,280 

2,340

2,050 

8,860 

2,480 

8,190 

2,050

2,190 

8,400 

2,640 

2,870 

3,770

,190 

,860 

,520 

,740 

,630

,790 

,080 

3,180

Month

Oet

Hoi 

Dec

C

Jar 

Pet 

Maz 

Api 

Maj 

Jur 

Ju3 

Au< 

Sei

1

alendar year 194 0......................

Fater year 1940-4

Mar.

2,810 

4,650 

4,410 

3,570 

3,080

3,370 

3,080 

2,560 

2,260 

2,190

2,050 

8,120 

9,470 

60,200 

58,500

21,200 

9,880 

7,040 

6,040 

5,440

5,090 

4,740 

4,300 

4,080 

4,190

3,880 

3,470 

3,180 

3,370 

3,880 

4,300

Apr.

5,560 

5,790 

7,S20 

7,300 

5,200

4,860 

4,300 

3,880 

3,88t) 

3,980

4,300 

4,300 

5,800 

6,540 

6,290

5,090 

4,630 

4,520 

4,190 

3,770

3,470 

3,280 

3,180 

3,080 

3,180

3,880 

4,410 

4,980 

5,560 

5,800

Secondfoot -days

14,732 

14,305 

92,979

852,917

109,430 

83,860 

253,400 

143,820 

156,460 

40,943 

20,739 

18,368 

16,966

971,007

May

6,290 

6,290 

5,920 

5,920 

7,880

8,900 

8,900 

8,900 

8,350 

8,080

7,820 

7,560 

7,300 

6,790 

5,920

4,980 

4,580 

4,190 

3,880 

3,570

3,180 

2,720 

2,400 

2,190 

1,910

1,910 

2,120 

2,120 

2,050 

1,980 

1,980

Maximum

1,390 

1,890 

21,900

21,900

16,800 

6,790 

60,200 

7,820 

8,900 

1,910 

1,110 

2,440 

4,640

60,200

June

1,910 

1,840 

1,780 

1,650 

1,650

1,720 

1,780 

1,650 

1,590 

1,520

1,400 

1,230 

1,170 

1,150 

1,170

1,190 

1,210 

1,260 

1,270 

1,240

1,240 

1,230 

1,230 

1,500 

1,230

1,160 

1,100 

1,030 

981 

927

July

864 

793 

716 

657 

648

674 

666 

632 

624 

608

592 

538 

492 

471 

486

500 

500 

616 

691 

927

963 

891 

914 

1,110 

945

748 

60S 

545 

478 

444 

406

Minimum

208 

222

435

106

1,020 

1,110 

2,050 

3,080 

1,910 

927 

405 

325 

 246

208

Aug.

375 

346 

330 

325 

662

655 

538 

500 

640 

2,440

1,280 

616 

47S 

53S 

624

538 

552 

682 

568 

560

522 

485 

568 

576 

522

478 

431 

387 

357 

352 

393

Mean

475 

477 

2,999

691

3,530 

2,995 

3,335 

4,794 

5,047 

1,365 

669 

593 

566

2,660

Sept.

381 

346 

336

315 

309

304 

867 

258 

258 

246

246 

.250 

250 

729 

566

588 

320 

304

295 

313

309 

299 

285 

276 

276

272 

867 

1,560 

4,640 

2,100

Run-off In 

aore-feet

29,220 

28,370 

184,400

501,600

217,100 

166,300 

512,500 

286,300 

310,300 

81,220 

41,140 

36,430 

33,650

1,926,000

Peak discharge.- Dec. 13 (3:50 p.m.) 11,600 sec. -ft.; Dec. 25 (12:20 p.m.) 31 r 6OO sec. -ft.: Dec. 5

ft.; Jan. 11 (2:05 p.m.) 31,600 sec.-ft.; Mar. 14 (11:20 p.m.) 117,000 sec.-
286 GILA RIVER BASIN

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 

0am; Canyon Lake, formed by Mormon Flat 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.- October 1934 to September 1941.

Extremes.- Maximum contents of system- during year, 1,764,000 acre-feet May 22; minimum

 contents, 26,870 acre-feet Oct. 1.

1934-41: Maximum contents, that of May 22, 1941; minimum contents, 20,680 acrefeet Sept. 16, 1940.

Remarks.- Total capacity of the four reservoirs 18 1,771,000 acre-feet, divided as

roilows: Roosevelt Lake, 1,398,000 acre-feet; Apache Lake, 245,000 acre-feet; Canyon 

Lake, 58,000 acre-feet; Sahuaro Lake, 70,000 acre-feet. Records given herein represent 

usable contents. Dead storage negligible. Capacity storage not utilized in order to 

provide flood control regulation. Water from this system is used for irrigation of 

Salt River Valley and for the generation of power. The four clams forming these reservoirs completely develop the fall in Salt River from Roosevelt Lake to Stewart Mountain 

Dam.

Cooperation.- Records of daily contents furnished by Salt River Valley Water Users' 

elation. As so~

Contents at 12 p.m., In thousands of acre-feet, water year October 1940 to September 1941

Day

1

2

S

4

6

6

7

8

9

10

11

12

15

14

15

16

17

18

19

80

21

28

23

24

86

86

27

88

89

SO

51

Oct.

26. S7

27.24

26.89

27.55

51.56

34.49

56.28

57.21

57.84

59.21

40.15

59.68

41.86

45.92

44.70

45.54

46.51

47.55

48.29

48.95

49.66

50.61

51.40

52.10

52.88

52.98

53.97

55.55

56.61

57.12

57.50

ROT.

5S.03

5S.32

53.66

58.97

59.19

60.11

60.94

61.20

61.60

62.12

61.72

61.00

60.54

59.97

59.50

53.88

58.27

58.60

61.61

64.11

66.23

67.63

68.77

69.77

70.77

71.81

72.72

73.69

74.54

75.38

-

Dee.

76.14

76.88

77.45

73.14

78.90

79.73

80.87

81.82

82.58

83.90

84.95

89.71

106.20

118. 20

123.60

126.90

131.00

136.70

141.80

146.40

149.70

153.00

155.40

183.40

225.10

245.90

253.90

256.90

261.60

297.00

359.50

Jan.

396.2

412.3

421.1

426.5

451.4

435.0

458.8

442.5

445.2

448.9

475.5

510.5

552.5

544.4

555.3

559.5

563.9

568.7

572.1

575.4

578.1

580.2

582.5

586.4

592.5

599.0

605.6

613.8

627.3

637.4

644.4

Feb.

650.3

654.8

653.4

661.4

664.0

668.1

680.2

694.2

704.3

711.4

716.9

722.5

728.3

733.9

739.2

746.4

753.3

760.1

767.9

777.4

788.9

802.3

814.2

824.9

843.1

860.7

873.8

884.1

-

-

-

Mar.

895.6

909.6

925.0

937.0

948.5

959.8

969.2

976.4

982.4

988.7

994.9

1,005.0

1,045.0

1,196.0

1,522.0

1,582.0

1,410.0

1.427.0

1,442.0'

1,456.0

1,467.0

1,478.0

1,487.0

1,496.0

1,504.0

1,515.0

1,521.0

1,527.0

1,554.0

1.541.0

1,551.0

Apr.

1,565

1,582

1,605

1,631

1,634

1,645

1,655

1,663

1,671

1,679

1,689

1,707

1,730

1,741

1,750

1,752

1,752

1,757

1,756

1,756

1,757

1,758

1,758

1,758

1,758

1,760

1,760

1,759

1,759

1,761

-

**T

1,760

1,760

1,759

1,738

1,760

1,759

1,759

1,758

1,755

1,754

1,754

1,753

1,753

1,759

1,759

1,759

1,759

1,758

1,758

1,760

1,762

1,764

1,763

1,762

1,762

1,761

1,761

1,760

1,759

1,759

1,759

June

1,759

1,758

1,758

1,757

1,757

1,757

1,756

1,755

1,755

1,756

1,756

1,756

1,755

1,755

1,755

1,754

1,755

1,755

1,755

1,755

1,755

1,754

1,753

1,752

1,749

1,748

1,746

1,745

1.744.

1,742

-

July

1,740

1,737

1,736

1,735

1,731

1,729

1,726

1,723

1,721

1,716

1,716

1,713

1,710

1,707

1,704

1,702

1,700

1,698

1,695

1,693

1,690

1,688

1,687

1,686

1,686

1,687

1,686

1,685

1,684

1,680

1,677

Aug.

1,674

1,671

1,668

1,665

1,662

1,660

1,657

1.655

1,652

1,653

1,653

1,652

1,650

1,648

1,645

1,643

1,641

1,639

1,638

1,635

1,632

1,630

1,627

1,624

1,622

1,620

1,61V

1,615

1,612

1>610

1,608

Sept.

1,606

1,603

1,600

1,596

1,593

1,590

1,587

1,582

1,579

1,573

1,573

1,570

1,567

1,555

1,564

1,562

1,559

1,557

1,555

1,552

1,549

1,548

1,644'

1,541

1,539

1,536

1,535

1,537

1*542

1,546

- '
01U RIVER BASIN 287

Salt River at Stewart Mountain Dam, Ariz.

Location.- Water-stage recorder, lat. 33°33', long. 111°32', in SEi sec. 33, T. 3 N.,

 RTTTE., unsurveyed, In Tonto National Forest, three-quarters of a mile downstream 

from Stewart Mountain Dam and 9 miles upstream from Verde River. Datum of gage is 

1,396.33 feet above mean sea level, datum of 1929.

Drainage area.- 6,220 square miles.

Records available.- October 1934 to September 1941.

Extremes (regulated.- Maximum discharge during year, 11,700 second-feet May 7 (gage 

neignt, io.97 reet); minimum, 7 second-feet Oct. 31 to Nov. 9, Feb. 27 to Mar. 3, 

Mar. 18-22.

1934-41: Maximum discharge, that of May 7, 1941; minimum, 3 second-feet Jan. 8-20, 

1935.

Remarks.- Records excellent. Flow regulated at Stewart Mountain Dam and by three other

 dams having a combined capacity of 1,771,000 acre-feet (see p. 286). Discharge occurred over spillway of Roosevelt Dam from Apr. 13 to July 24 and at Stewart Mountain Dam 

from Apr. 15 to May 15. Water Is available for diversion at Granite Reef Dam 13 miles 

downstream for Irrigation in the Salt River Valley (see p. 297). During the year 

45 discharge measurements were made.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

IS 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

538 

53S 

532 

486 

15

12 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

11 

11 

12 

IS

12 

12 

12 

12 

IS

IS 

IS 

12 

12 

10 

7

Nov.

7 

7 

7 

7 

7

7 

7 

7 

7 

33

457 

527 

527 

521 

461

456 

430 

61 

16 

14

14 

14 

14 

14 

12

11 

11 

11 

11 

11

Dec.

11 

11 

11 

11 

11

11 

11 

11 

11 

11

11 

- 11 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

11 

11

11 

11 

11 

11 

34 

27

Jan.

12 

11 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10

in

10 

10 

10 

1011

11 11

12 

12 

12

12 

12 

12 

13 

12 

12

Feb.

12 

11 

10 

10 

10

10 

12 

10 

9 

9

9 

9

e

8 

S

S 

8 

S 

S 

S

S 

S 

8 

8 

8

8 

7 

7

Month

Od 

Noi 

De

C

Jai 

Fel 

Hai 

Api 

Ha, 

Jui 

Ju] 

Ax* 

Se

1

>alendar year 194 0 ......................

-11

Ly..... .................................

fater year 1940-4

Mar.

7 

7 

7 

S 

8

8 

8 

8 

S 

8

S 

9 

9 

29 

12

8 

8 

7 

7 

7

7 

7 

8 

9 

9

9 

9 

9 

9 

9 

9

Apr.

9 

9 

S 

8 

9

9 

10 

10 

10 

10

10 

12 

10 

2,000 

5,210

7,570 

5,560 

2,340 

4,910 

4,330

3,130 

3,250 

3,680 

3,820 

3,290

3,020 

4,680 

6,240 

5,820 

4,170

Second- , 

foot -days

2,402 

3,689 

369

193,993

335 

247 

275 

73,144 

177,200 

50,750 

50,719 

54,140 

48,057

461,327

May

6,890 

9,240 

11,000 

10,700 

8,140

10,300 

10,900 

11,300 

11,100 

8,970

7,770 

8,020 

4,990 

7,570 

5,980

4,980 

3,980 

3,990 

2,900 

2,490

2,490 

2,620 

2,680 

2,680 

2,310

2,190 

2,190 

2,250 

2,370 

2,250 

1,960

Maximum

538 

527 

34

1,590

13 

12 

29 

7,570 

11,300 

1,910 

1,920 

1,970 

1,920

11,300

June

1,800 

1,910 

1,910 

1,910 

1,910

1,860 

1,700 

1,600 

1,600 

1,600

1,600 

1,600 

1,650 

1,650 

1,550

1,650 

1,650 

1,650 

1,650 

1,600

1,600 

1,650 

1,650 

1,650 

1,700

1,700 

1,700 

1.700 

1,700 

1,650

July

1,650 

1,650 

1,650 

1,600 

1,600

1,800 

1,860 

1,860 

1,860 

1,860

1,800 

1,800 

1,800 

1,800 

1,800

1,800 

1,750 

1,700 

1,750 

1,750

1,700 

1,750 

1,860 

1,700 

1,000

695 

700 

904 

1,430 

1,920 

1,920

Minimum

7 

7 

10

7

10 

7 

7 

8 

1,960 

1,550 

695 

1,360 

905

7

Aug.

1,920 

1,920 

1,920 

1^920 

1,92"0

1,920 

1,920 

1,920 

1,920 

1,650

J.,360 

1,700 

1,700 

1,700 

1,700

1,700 

1,550 

1,550 

1,860 

1,920

1,920 

1,970 

1,970 

1,810 

1,500

1,600 

1,600 

1,600 

1,550 

1,550 

1,400

Mean

77.5 

123 

11.9

530

10 8 

8.8 

8.9 

2,438 

5,716 

1,692 

1,636 

1,746 

1,602

1,264

Sept.

1,400 

1,760 

1,920 

1,920 

1,920

1,920 

1,860 

1,860 

1,920 

1,920

1,920 

1,860 

1,810 

1,650 

1,500

1,450 

1,500 

1,550 

1,550 

1,550

1,500 

1,450 

1,450 

1,500 

1,500

1,450 

1,400 

1,170 

905 

992

Run- off in 

acre-feet

4,760 

7,320 

732

384,800

664 

490 

545 

145,100 

351,500 

100,700 

100,600 

107,400 

95,320

915,100

Peak discharge.- Apr. 17 (1:20 a.m.) 

(4i30 p.m.) 11,700 sec.-ft.

sec.-ft.; May 3 (8:50 p.m.) 11,500 sec.-ft.; May 7
288 GILA RIVER BASIN

Tonto Creek above Gun Creek, near Roosevelt, Arlz.

Location.- Water-stage recorder, lat. 33°59', long. 111°18', in NEiSWi sec. 2, T. 7 N., 

R. 10 £., in Tonto National Forest, 600 feet upstream from Gun Creek, and 26 miles 

upstream from Roosevelt Dam. 23i miles northwest of the village of Roosevelt. 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 1941.

Extremes.- Maximum discharge during year, 32,000 second-feet Mar. 14 (gage height, 15.1 

reetj, by slope-area method; minimum observed, 15 second-feet Sept. 10 (gage height, 

3.28 feet).

Remarks.- Records good below 2,000 second-feet and fair above. Small diversions above 

station for irrigation. For comparison with station near Roosevelt, 10 miles downstream, operated 1913-40, a number of discharge measurements were made at both sites. 

Those made at this etatlon are listed below, and for results of those made on same days 

at station near Roosevelt see dally discharge table on next page.

Day

1941

15........

Discharge 

(second- feet)

oea

*7A

44

28

30

Day

1941

Discharge 

(aecond-feet)

«rt

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

6

6 

7

S 

9 

10

11 

12 

13 

14 

16

16

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

"1

Oct. HOT. Dec.

176 

159 

129 

994 

8,000

1,150 

S30 

670 

686 

3,910 

4,070

Jan.

1,820 

1,170 

760 

525 

420

390 

332 

278 

248 

245

1,160 

1,120 

719 

543 

470

399 

320 

252 

223

190

167 

145 

142 

134 

590

659 

523 

596 

S29

766 

737

Feb.

456 

370 

302 

265

230

220 

1,510 

1,060 

715 

547

472 

506 

449 

368 

333

1,030 

708 

591 

692 

955

1,250 

1,130 

1,340 

1,080 

1,890

1,700 

1,200 

989

Month

Dot

Hoi 

Dec

C

Jan 

Feb 

Mar 

Apr 

*a, 

Jun 

Jul 

Aug 

Sej

I

ember 2] 

alendar year

us;::;:::::::::::::::::::::::::::::::::

he perlo

Mar.

962 

2,860 

1,200 

- 872 

1,740

1,440 

972 

771 

669 

563

492

502 

2,090 

16,500 

6,500

2,530 

1,550 

1,200 

989 

S09

669 

652 

477 

454 

449

405 

. 358 

333 

333 

326 

329

Apr.

666 

1,540 

2,310 

1,310 

1,040

786 

608 

Sll 

463 

436

430 

2,640 

4,010 

3,170 

2,110

1,600 

1,190 

896 

736 

614

516 

440 

379 

353 

362

436 

502 

436

41S 

383

Secondfoot -days

20,676

_

16,849 

22,348

49,885 

31,190 

15,141 

1,534 

1,253 

1,860 

921

-

Bay

358 

3,690 

1,500 

1,490 

1,240

824 

715 

608 

542 

468

409 

358 

317 

27S 

252

223 

195 

176

156 

143

135 

130 

130 

US 

123

111 

96 

96 

90 

86 

86

Maximum

8,000

.

1,820 

1.S90 

16,500 

4,010 

3,690 

81 

112 

342 

87

-

June

81 

77 

76 

74

70

69 

67 

67 

67 

64

61 

58 

53 

50 

48

44

41 

41 

40 

3S

38 

35 

34 

41 

42

37

31 

30 

30 

30

Minimum

July

28 

27 

26 

26 

26

26 

26 

51 

62 

35

44 

38 

31

30 

30

2S 

28 

33 

61 

41

37 

38 

38 

112 

79

72 

53 

41

36 

31 

30

129

-

134 

220 

325 

353 

85 

30 

26 

18 

17

-

Aug.

28 

27 

28 

74 

49

54 

62

50 

179 

342

103 

58 

42 

42 

90

61 

77 

54 

40 

34

33 

30 

27 

27 

27

22 

20 

18 

68 

54 

40

Mean

1,880

.

544 

798 

1,609 

1,040 

488 

51.1 

40.4 

60.0 

30.7

-

Sept.

30 

26 

24 

22 

22

20 

18 

17 

17 

17

17 

18 

20 

34 

35

27 

22 

39 

69 

40

30 

30 

27 

23 

23

22 

22 

77 

87 

46

Run- off In 

acre-feet

41,010

-

33,420 

44,330 

98,950 

61,860 

30,030 

3,040 

2,490 

3,690 

1,830

320,600

Peak discharge.- Dec. 25 (3 a.m.) 26,700 sec.-ft.; Dec. 30 (9 p.m.) 14,200 sec.-ft.; JJar. 2 

(4:30 a.m.) 6,810 sec.-ft.; Mar. 14 (S:45 p.m.) 32,000 sec.-ft.; Apr. 13 (9:20 p.m.) 7,530 sec.-ft. 

May 2 (18:15 p.m.) 10,600 sec.-ft.
GILA RIVER BASIN 289

Tonto Creek near Roosevelt, Ariz.

Location.- Staff gage, lat. 33°52', long. 111°18', in sec. 14, T. 6 N., R. 10 E., 16 miles 

upstream from Roosevelt Dam and 16 miles northwest of village of Roosevelt.

Drainage area.- 841 square miles.

Records available.- October 1913 to December 1940 (destroyed by flood Dec. 25).

Average discharge.- 27 years (1913-40), 142 second-feet.

Extremes.- Maximum discharge and gage height during period not determined; minimum 

discharge observed, 2 second-feet Oct. 21-26.

1913-40: Maximum discharge not determined; no flow at times during dry years.

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

staff gage read once dally. Small diversions above station for irrigation. See p. 285 

for records of flow of Salt River, which also contribute^ to Roosevelt Reservoir.

Cooperation.- Gage readings furnished by Salt River Valley Water Users' Association.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

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.

14 

12 

8 

6 

768

238 

78 

44 

40 

74

22 

16 

11 

11 

9

S 

8 

7 

5 

3

2 

2 

2 

2 

2

2 

64 

224 

68 

33 

23

Nov.

23

20 

17 

14 

12

12 

9 

9

7 

8

8 

7 

7 

4 

5

e

5

6 

16 

191

94 

82 

65 

67 

59

49

48 

37 

41 

32

Dee.

31 

31

26 

23 

23

23

19 

16 

16 

29

49 

474 

956

604 

276

177 

163 

1,230 

448 

295

206 

167 

138 

-»1,160

as, 800

al,460 

al.OOO 

a830 

a720 

a4,600 

a4,900

Jan. Feb.

tsio

Month

Got 

NOT 

Dec

C

Jar 

Pet 

Max 

Apr 

Maj 

Jut 

Ju3 

Aug 

Sej

alendar year 19 10 .....................

Phe peri

Mar. Apr.

Secondfoot -days

1,304 

969

23,667

37,544.4

~-

-

May

Maximum

763 

191 

8,800

8,800

j;

-

June

t77

tsi

July

T14

tie

Minimum

2 

4

16

.4

-

-

Aug.

T25

Mean

68.2 

32.0 

925

103

~-

-

Sept.

T12 

t!2

Run-off in 

acre-feet

3,680 

1,900 

56,840

74,470

-

62,320

t Discharge measurement.

a Ho gage-height record; discharge computed on basis of record at station above Qun Creek.
290 GILA RIVER BASIN 

Verde River near Camp Verde, Ariz.

Location.- Water-stage recorder, lat. 34°27', long. 111°47', in sec. 1, T. 12 N., R. 5 

K., unsurveyed, Just downstream from Camp Verde dam site, about 750 feet upstream 

from Chasm Creek, and 9 miles southeast of Camp Verde. Datum of gage is 2,874.1 

feet above mean sea level, datum of 1929.

Drainage area.- 5,000 square miles (includes 344 square miles in Aubrey Valley Playa, a 

closed basin).

Records available.- April 1934 to September 1941. December 1912 to March 1920, at site 

15 miles upstream published as Verde River at Camp Verde, Ariz. (drainage area 

4,220 square miles).

Extremes.- Maximum discharge during year, 30,000 second-feet Mar. 14 (gage height, 16.85 

reet); minimum, 87 second-feet June 17,

1934-41: Maximum discharge, 97,000 second-feet Mar. 3, 1938 (gage height, 26.1 

f-eet), by slope-area method, verified by comparison with records for other stations 

on Verde River; minimum, 41 second-feet July 17, 1940.

Remarks.- Records good except those for period of incomplete gage-height record, which 

are "fair. Snail diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

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.

285 

24 S 

226 

223 

4,290

3,130 

1,020 

5S9 

406 

327

285 

261 

238 

232 

223

213 

207 

201 

195 

1S7

184 

184 

187 

184 

181

195 

486 

900 

740 

516 

350

Nov.

285 

24S 

226 

220 

207

204 

201 

195 

195 

192

19S 

19S 

195 

1S4 

190

195 

192 

201 

443 

1,120

900 

754 

56S 

493 

450

424 

369 

327 

299 

2S2

Dec.

278 2se

295 

2S8 

275

265 

252 

245 

245 

345

293 

2,710 

2,380 

1,180 

732

456 

390 

2,680 

1,760 

1,070

698 

517 

446 

931 

9,950

5,100 

1,940 

1,180 

S85 

1,100 

2,780

Jan.

3,000 

1,560 

1,020 

774 

599

522 

47S 

411 

377 

446

637 

1,450 

1,510 

1,110 

960

7S2 

626 

493 

406 

365

338 

331 

316 

324 

534

1,000 

853 

900 

1,040 

1,220 

1,020

Feb.

Sll 

680 

568 

493 

450

437 

949 

2,210 

1,430 

1,110

1,320 

2,620 

2,690 

1,630 

1,430

3,920 

2,600 

2,440 

2,220 

3,420

11,000 

7,660 

5,500 

3,130 

5.9SO

5,060 

2,500 

1,690

Month

Got 

Not

Doc

C

Jar 

Pel 

Mai 

Api 

Maj 

Jur 

Ju3 

Aus 

Sel

1

alendar year 194

11

y......................................

fater year 1940-4

Peak discharge.- (

(4 p.m.) 14,600 sec

liar.

1,700 

10,400 

7,340 

3,270 

2,100

2,940 

2,370 

1,270 

935 

844

S24 

741 

2,030 

13,900 

15,700

6,480 

3,520 

2,620 

3,000 

1,690

1,500 

1,060 

935 

970 

1,080

970 

693 

675 

681 

657 

675

Apr.

747 

2,210 

3,810 

3,610 

3,100

2,100 

1,400 

1,000 

837 

747

693 

5,610 

9,330 

9,090 

9,580

10,800 

8,770 

3,840 

2,320 

1,590

1,230 

1,000 

872 

844 

S79

970 

1,440 

1,190 

1,040 

851

Secondfoot-days

17,093 

10,155 

41,853

140,467

25,402 

76,148 

92,590 

91,500 

10,437 

3,411 

5,041 

4,815 

8,245

386,690

Bay

699 

603 

754 

865 

886

669 

514 

429 

355 

305

263 

239 

228 

221 

221

217 

217 

213 

213 

217

217 

221 

221 

210 

a200

aEOO 

a!90 

a!70 

a!70 

al60 

a!50

Maximum

4,290 

1,120 

9,950

9,950

3,000 

11,000 

15,700 

10,800 

886 

140 

518 

292 

2,010

15,700

June

al40 

126 

120 

126 

128

131 

134 

134 

139 

128

123 

12S 

115 

101 

91

91 

91 

91 

96 

93

91 

96 

105 

113 

110

120 

105 

110 

115 

120

July

115 

110 

110 

108 

126

123 

US 

110 

110 

110

10S 

113 

103 

113 

118

103 

103 

113 

108 

110

115 

118 

113 

193 

350

51S 

419 

422 

232 

175 

154

Minimum

181 

184 

245

43

316 

437 

657 

693 

150 

91 

103 

101 

98

91

Aug.

137 

134 

134 

118 

115

120 

126 

157 

224 

292

259 

217 

239 

210 

182

196 

192 

196 

175 

157

139 

134 

123 

113 

110

105 

101 

101 

101 

103 

105

Mean

551 

338 

1,350

384

819 

2,720 

2,9S7 

3,050 

337 

114 

163 

.155 

275

1,059

Sept.

108 

108 

98 

113 

106

113 

110 

118 

115 

113

108 

118 

220 

2,010 

981

520 

350 

275 

292 

236

213 

203 

203 

203 

192

186 

166 

196 

210 

259

Run-off in 

acre-feet

33,900 

20,140 

83,010

278,600

50,380 

151,000 

183,600 

181,500 

20,700 

6,770 

10,000 

9,580 

16,350

766,900

Jot. 5 {S p.m.) 11,100 sec. -ft.; Dec. 25 (11:45 a.m.) 11,900 sec. -ft.; Feb. 21 

-It.; Bar. 2 (9 a.m.) 19,000 sec. -ft. ; Mar. 14 (8:45 p.m.) 30,000 sec. -ft.;

Apr. 16 (5t30 a.m.) 14,100 sec.-ft.

a Oage-helght record Incomplete; discharge computed on basis of partial records and records for

station above Bartlett Reservoir near Cave Creek.
01U RIVER BASIN 

Verde River below East Verde River, near Pine, Arlz.

291

Location.- Water-stage recorder, lat. 34°16', long. lll°41', in sec. 30, T. 11 N., R.

 7 E., unsurveyed, 24 roiles downstream from East Verde River and 15 miles southwest of 

Pine. Datum of gage Is 2,401.6 feet above mean sea level, datum of 1929.

Drainage area.- 5,610 square miles (includes 344 square miles in Aubrey Valley Playa, a 

closed basin).

Records available.- June 1934 to May 1941 (discontinued).

Extrenes.- Maximum discharge during period, 49,700 second-feet Mar. 14 (gage height, 18.2 

feet), from rating curve extended above 27,000 second-feet based on velocity-area 

studies; minimum daily, 220 second-feet Oct. 20, affected by regulation of flow of 

Fossil Creek by power plant.

1934-41: Maximum discharge, 110,000 second-feet Mar. 3, 1938 (gage height, 24.7 

feet), by slope-area method, verified by comparison with records for other stations 

on Verde River; minimum, 48 second-feet (regulated) July 17, 1939 (gage height, 6.22 

feet).

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

 S5aTT~dlversions above station for irrigation. Some regulation by power plant, 9 

miles above station, using water from Fossil Creek.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23

24 

25

26 

27 

28 

29 

SO 

31

Oct.

395 

313 

290 

280 

4,450

4,120 

1,260 

743 

580 

440

3SO 

340 

3OO 

290 

280

250 

255 

250 

250 

220

230 

230 

230 

225 

230

350

820 

1,100 

907 

696 

474

Nov.

370 

350 

310 

300 

280

260 

258 

262 

262 

249

249 

266 

258 

253 

253

262 

262 

266 

389 

1,320

1,080 

863 

736 

608 

570

544 

480 

424 

3S3 

350

Dec.

340 

350 

355 

350 

345

334 

313 

304 

304 

313

472 

3,000 

3,340 

1,630 

1,000

743 

S60 

2,780 

2,150 

1,320

890 

682 

582 

3,960 

13,300

6,210 

2,620 

1,570 

1,150 

2,470 

5,300

Jan.

4,SOO 

2,460 

1,460 

1,080 

850

734 

68S 

565 

506 

539

765 

1,680 

1,9SO 

1,460 

1,220

1,080 

816 

635 

513 

464

434 

401 

390 

384 

1,160

1,700 

1,200 

1,270 

1,630 

1,640 

1,420

Feb.

1,100 

S94 

766 

658 

586

565 

1,710 

2,960 

1.S80 

1,360

1,420 

2,680 

3,230 

2,010 

1,590

3,810 

3,390 

2,760 

2,560 

3,760

12,000 

8,530 

6,060 

3,720 

6,800

5,770 

3,070 

2,090

Month

Oct 

No\ 

Dec

C

Jar 

Fel 

Hai 

Apr 

Maj 

Jut 

Ju3 

Auj 

Se;

alendar year 1940... ...................

rhe peri

Mar.

1,920 

11,900 

7,490 

3,S40 

3,600

3,840 

2,960 

1,740 

1,280 

1,160

1,140 

1,040 

S, 550 

23,000 

24,800

9,060 

4,440 

3,390 

2,660 

S,3SO

a, 100

1,7OO 

1,440 

1,460 

1,600

1,510 

1,220 

1,150 

1,160 

1,100 

1,120

Apr.

1,520 

4,670 

5,660 

4,560 

3,S40

2,760 

2,010 

1,550 

1,300 

1,1SO

1,210 

8,340 

15.1OO 

13,300 

13,700

15,000 

11,200 

4,820 

3,070 

2,120

1,740 

1,500 

1,330 

1,240 

1«,270

1,370 

1,800 

1,700 

1,490 

1,360

Becondfoot-days

21,178 

12,717 

59,327

183,049

35,924 

S7,779 

129,650 

131,610 

10,326

 f

-

May

1,100 

1,350 

1,480 

1,420 

1,440

1,140 

904 

766 

726

Maximum

4,450 

1,320 

13,300

13,300

4,800 

12,000 

24,SOO 

15.100 

1,480

-

June

t!78

July

Minimum

220 

249 

304

73

384 

565 

1,040 

1,180 

726

-

Aug.

Mean

633 

424 

1,914

500

1,159 

3,135 

4,182 

4,387 

1,147

-

Sept.

Run-off In 

acre-feet

42,010 

25,380 

117, *M50

363,100

71,250 

174,100 

257,200 

261,000 

20,480

969,000

Peak discharge.- Dec. SB (3:30 a.m.) 18,900 sec.-ft.; Feb. 21 (5:50 p.m.) 17,900 sec.-ft.j Hap. 2 

(11:10 a.m.) 21,600 sec.-ft.; Mar. 14 (10:30 p.m.) 49,700 sec.-ft.; Apr. 13 (6:30 p.m.) 17,400 

sec.-ft.; Apr. 16 (8:20 a.m.) IS,400 sec.-ft.

t Result of discharge measurement.

Hote.- Ho gage-height record Oct. 10-26, HOT. 1-6; discharge computed on basis of known upper 

limit of discharge and comparison with records for stations at Camp Verde and above Bartlett 

Reservoir near CaTe Creek.
393 OILA RIVSR BASIN 

Verde River above Bartlett Reservoir, near Cave Creek, Arlz.

Location.- Water-stage recorder, lat. 33°57', long. 111°41', in SEi sec. 13, T. 7 N., 

R. 6 E., unsurveyed, 16 miles upstream from Bartlett Dam and 17 miles northeast of 

Cave Creek post office. Datum of gage is 1,8£9.5 feet above mean sea level, datum of 

1939.

Drainage area.- 6,040 square miles.

Records available.- September 193S to September 1941. February 1935 to February 1939, 

(prior to closing of Bartlett Dam) at site 31 miles downstream, published as Verde 

River above Camp Creek near McDowell, Ariz. (drainage area, 6,180 square miles). 

Records were also obtained August to September 1889, January 1895 to November 1899, 

January 1901 to February 1925, at site 38 miles downstream and three-quarters of a 

mile upstream from mouth, published as verde River near McDowell, Ariz. (drainage 

area, 6,620 square miles).

Average discharge.- 16 years (1925-41), 660 second-feet.

Extremes.- Maximum discharge during year, 43,800 second-feet Mar. 14 (gage height, 17.85 

feet;; minimum, 114 second-feet, Sept. 8 (gage height, 3.79 feet).

1938-41: Maximum discharge, 100,000 second/-feet Mar. 3, 1938 (gage height, 35.0 

feet, from floodmarks), based on comparison with other stations on Verde River; minimum, 56 second-feet, July 18, 1939 (gage height, 2.55 feet).

Flood of Mar. 3, 1938, is known to be the highest, at least since 1924.

Remarks.- Records excellent. Small diversions above station. Low flow slightly regulatea by power 'plant, 45 miles above station, using water from Fossil Creek. During 

the year 89 discharge measurements were made.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4

e

6 

7 

8 

9 

10

11 

12 

13 

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

524 

376 

316 

302 

2,190

6,290 

1,770 

968 

697 

562

439 

378 

344 

301 

269

27S 

256 

259 

249 

249

218 

228 

232 

228 

225

408 

601 

1,230 

1,040 

764 

578

NOT.

457 

382 

348 

308 

305

285 

270 

270 

267 

259

245 

256 

259 

256 

245

249 

256 

256 

27S 

860

1,190 

968 

832 

657 

604

553 

514 

466 

412 

378

Dec.

353 

340 

344 

357 

348

340 

324 

308 

289 

308

390 

" 1,550 

4,280 

2,140 

1,340

933 

735 

2,450 

2,640 

1,790

1,150 

832 

679 

2,370 

14,500

7,810 

3,260 

2,050 

1,440 

3,500 

8,030

Jan.

6,610 

3,500 

2,050 

1.4SO 

1,120

933 

S13 

735 

679 

646

776 

1,330 

2,210 

1,710 

1,310

1,190 

96S 

813 

674 

563

519 

4SO 

457 

452 

644

1,850 

1,290 

1,290 

1,760 

1,900 

1,600

Fell.

1,440 

1,120 

898 

776 

679

630 

1,580 

3,250 

2,410 

1,710

1,530 

1,910 

3,400 

2,480 

1,800

3,100 

3,900 

2,970 

2,970 

3,300

9,280 

10,500 

7,310 

4,420 

7,240

7,400 

4,080 

2,750

Month

Oct 

Not

Dec

C

Jar 

Pet 

Mar 

Apr 

Maj 

Jur 

Jul 

Aug 

Sei

fl

alendar year 194

11.....................................

ater year 1940-4 1.. ..............

Har.

2,360 

11,000 

10,400 

5,750 

5,110

4,840 

3,900 

2,530 

1,850 

1,530

1,440 

1,450 

2,500 

21$ 200 

30,200

12,500 

5,740 

4,110 

3,280 

* 2,730

2,290 

1,960 

1,650 

1,420 

1,560

1,560 

1,380 

1,210 

1,210 

1,170 

1,140

Apr.

1,210 

3,340 

6,710 

4,960 

4,200

3.20O 

2,350 

1,750 

1,510 

1,380

1,330 

7,460 

16,700 

15,600 

13,600

15,200 

11,500 

5,550 

3,590 

2,590

2,060 

1,750 

1,600 

1,460 

1,420

1,670 

1,660 

1,800 

1,560 

1,420

Secondfoot-days

22,789 

12,885 

67,180

192,717

42,522 

94,833 

151,070 

140,130 

20,608 

6,204 

7,395 

S,301 

9,845

583,762

May

1,330 

1,330 

1,730 

1,800 

1,600

1,330 

1,140 

920 

800 

707

651 

585 

536 

495 

430

398 

370 

360 

318 

324

324 

328 

335 

342 

328

310 

32S 

304 

284 

287 

284

Maximum

6,290 

1,190 

14,500

14,500

6,610 

10,500 

30,200 

16,700 

1,800 

271 

590 

575 

1,600

30,200

June

271 

259 

259 

247 

235

241 

241 

235 

221 

244

241 

227 

21S 

216 

199

178 

176 

173 

178 

178

176 

176 

168 

176 

191

183 

183 

176 

170 

166

July

173 

176 

170 

16S 

163

176 

227 

221 

180 

176

168 

168 

176 

153 

191

180 

178 

213 

176 

173

151 

168 

176 

236 

394

490 

590 

4SS 

486 

342 

268

Aug.

232 

207 

194 

203 

575

244 

267 

205 

330 

539

490 

406 

345 

338 

321

278 

284 

259 

268 

253

227 

207 

196 

186 

160

160 

166 

158 

234 

173 

196

HlnlMun Mean

218 735 

245 430 

289 2,167

6S 527

452 1,372 

630 3.387 

1,140 4,873 

1,210 4,671 

284 665 

166 207 

161 239 

15S 268 

131 328

131 1,599

Sept.

173 

149 

156 

156 

158

166 

170 

131 

151 

17S

173 

166 

16S 

531 

1,600

947 

688 

472 

3S6 

370

332 

256 

271 

271 

271

253 

238 

299 

271 

304

Run-off In 

acre-feet

45,200 

25,560 

133,200

382,200

84,340 

1SS.100 

299,600 

277,900 

40,880 

12,310 

14,670 

16,460 

19,530

1,158,000

Peak dlseharae.- Oct. 6 <3s45 a.m.) ll.ROO aao.-ft.! Dee. 25 fSsSO a.m.) 19.600 sec. -ft. : feib.SS 

(12:15 a.m.) 16,000 sec. -ft.; Mar. & (4:30 p.m.) 23,400 sec. -ft.; Mar. 14 (10 p.m.) 43,800 aec.-ft. 

Apr. 13 (8:30 p.m.) 22,300 aec.-ft.
GILA RIVER BASIN 293

Bartlett Reservoir at Bartlett Dam, Arlz.

Location.- Water-stage recorder, lat. 33°49', long. 111°38', In sec. 34, T. 6 N., R. 

YE., unsurveyed, at Bartlett Dam on Verde River. Datum of gage Is 1,610.00 feet 

(adjustment of 1912), or 1,609.46 feet (datum of 1929) above mean sea level.

Drainage area.- 6,160 square nlles at Bartlett Dam. 

Records available.- July 1939 to September 1941.

Extremes.- Maximum contente during year, 184,800 acre-feet Feb. 17 (gage height, 188.80 

reetj; minimum, 1,760 acre-feet Oct. 4 (gage height, 28.77 feet).

1939-41: Maximum contents, that of Feb. 17, 1941; no storage at times.

Remarks.- Reservoir Is formed by concrete multiple-arch dam; storage began Feb. 5, 1939; 

dam completed In May 1939. Capacity, 182,600 acre-feet between gage heights 0.0 

(sill of outlet gates) and 188.0 feet (top of spillway gates). Natural flow passing 

through reservoir when outlet gates are open prevents withdrawal of storage to 

elevation of gate sill. No dead storage. Water Is used for Irrigation or lands below 

reservoir and for municipal supply. Figures given herein represent usable contents 

In reservoir except that storage above 182,60'0 acre-feet Is uncontrolled.

Contents at 12 p.m. In acre-feet, water year October 1940 to September 1941

Day

1

z3

4

6

6

7

8

9

10

11

12

13

14

16

16

17

18

19

20

21

22

23

24

86

26

27

28

29

30

31

Oct.

8,330

2,150

1,820

1,770

5,190

17,400

20,800

22,300

-.23,000

83,100

82,300

81,100

20,100

18,900

18,000

17,000

16,000

15,100

14,300

13,700

13,100

12,800

11,300

10,400

9,600

9,560

10,100

12,400

13,800

14,900

16,400

HOT.

15,400

16,100

14,600

13,900

12,900

11,900

10,800

9,640

8,450

7,610

7,800

8,160

6,380

8,520

8,660

8,940

9,160

8,860

8,910

9,790

11,600

12,700

13,800

14,400

14,900

15,200

16,200

14,800

14,400

14,400

-

Dee.

14,700

14,900

14,300

14,300

13,800

13,400

13,000

18,800

12,800

18,800

13,300

15,800

23,600

27,800

30,300

31,900

33,800

37,800

48,100

46,800

47,000

48,100

49,000

63,000

S2,400

96,900

103,100

106,600

106,800

116,100

131,300

Jan.

143,400

160,800

164,300

167,100

169,800

160,900

168,400

163,700

166,000

166,100

167,200

169,100

173,000

176,100

178,300

180,300

181,600

182,600

182,700

182,800

182,700

182,600

182,600

182,600

182,700

183,600

182,400

182,600

183,600

183,600

183,300

Feb.

182,700

182,600

162,800

182.900

183,000

183,000

183,900

184,200

182,900

183,200

182,700

183,000

183,700

182,600

182,600

1S4.600

182,700

182.900

183,100

183,100

182,900

182,900

182,700

182,800

182,700

182,700

182,700

182,700

.

.

-

Mar.

183,000

132,900

182,700

183,100

182,700

132,700

132,700

182,800

183,000

182,900

183,000

183,100

183,600

183,600

183,000

183,300

183,600

183,000

183,200

183,400

183,000

183,100

133,400

183,400

183,600

183,600

183,100

182,600

182,600

188,8QO

182,400

Apr.

188,100

133,700

133,900

183,600

183,600

163,100

182,800

182,900

183,100

182,900

182,900

183,400

183,100

183,400

183,400

182,700

182,700

182,300

182,900

182,800

182,700

132,800

183,100

183,100

182,900

183,200

182,900

183,300

182,800

182,700

-

M«y

182,900

182,200

163,000

183,600

182,800

183,400

183,400

183,100

182,600

183,400

183,700

183,400

183,000

183,000

183,100

183,000

182,800

182,800

182,900

183,000

133,200

183,200

183,300

183,300

183,400

183,400

183,400

183,400

183,400

183,300

183,300

June

133,300

183,800

182,400

180,900

179,400

173,100

176,300

175,400

174,100

172,400

170,400

168,900

166,900

166,400

163.900

162,300

160,800

157,800

165,400

153,200

151,200

149,600

147,600

145,600

143,500

141,300

139,200

137,300

135,400

133,600

-

July

131,400

129,400

127,600

125,900

124,300

122,800

120,900

119,000

116,800

114,700

112,800

111,100

109,400

107,300

105,100

102,800

101,000

100,300

99,600

98,800

97,600

96,600

94,400

94,700

95,700

96,600

97,800

98,600

99,600

100,200

100,100

Aug.

98,600

96,700

94,300

92,600

91,400

90,100

88,800

88,200

87,700

38,900

69,900

90/800

91,000

91,000

91,200

91,100

91,000

90,300

89,300

87,600

85,400

83,200

81,100

79,000

76,700

74,500

72,300

70,100

68,300

'67,100

66,900

Sept.

64,800

63,600

61,900

69,800

67,800

55,400

52,900

60,300

47,400.

44,600

41,40(31

38,200

36,300

33,700

36,300

35,100

34,000

32,300

30,300

28,200

26,300

24,200

22,000

19,600

17,400

16,600

13,900

14,000

14,400

16,000

Monthly gage height and contents, iAter year October 1940 to September 1941

Date

Water Tear 1940-41. ......

Oage height 

(feet)t

1 ftA t\A

_

Contents 

(acre-feet)

14>400

_

Change In contents 

during month 

(acre-feet}

+52,000

-300

 ( 600

+12,800

t Oage height at midnight.
294 OILA. RIVER BASIN 

Verde River above Camp Creek, near McDowell, Aria.

Location.- Water-stage recorder, lat. 33°47', long. 111°39', in sec. 16, T. 5 N., R. 7 E., 

unsurveyed, half a mile upstream from Camp Creek, 5.3 nlles downstream from Bartlett 

Dan, and 10 miles north of McDowell. Datum of gage Is 1,529.8 feet above nean sea 

level, datum of 1929.

Drainage area.- 6,180 square miles.

Records available.- February 1925 to September 1941. August to September 1889, January 

1895 to November 1899, and January 1901 to February 1925, at site 17 miles downstream, 

and three-quarters of a mile above mouth.

Average discharge.- 38 years (1903-41), 806 second-feet (adjusted for storage In Bartlett 

Reservoir since 1939).

Extremes.- Maximum discharge during year, 45,800 second-feet (regulated) Mar. 15 (gage 

height, 17.07 feet); minimum, 4 second-feet (regulated) Aug. 12.

1897-1939 (unregulated): Maximum discharge at site near nouth, 96,000 second-feet 

(estimated) Mov. 27, 1905; at present site, 95,000 second-feet Mar. 4, 1938 (gage 

height, 21.9 feet) from rating curve extended above 44,000 second-feet on basis of 

slope-area computation, velocity-area studies, logarithmic extension, and relation of 

mean depth to discharge per unit width, verified by comparison of peak discharge am 

total run-off of flood with peak discharge and total run-off of flood at other stations 

on the Verde River and at stations on Salt and Qlla Rivers; minimum, 32 second-feet 

July 19 and 20, 1904.

1939-41 (regulated): Maximum discharge, that of Mar. 15, 1941; minimum, 3 secondfeet Dec. 22-26, 1940.

Remarks.- Records excellent except those for Aug. 7-10, which are good. Small diversions 

above station. Flow regulated at Bartlett Dam since Feb. 5, 1939. (see p. 293). Discharge over spillway at Bartlett Darn occurred during period Jan. 19 to June 2, 1941. 

During the year 56 discharge measurements were made.

Discharge, In aecond-feet, water year October 1940 to September 1941

Day

1

2

S

4

5

6

7

S

9

10

11

12

IS

14

15

16

17

18

19

80

21

22

25

24

28

26

27

28

29

30

91

Oet.

583

523

512

353

156

65

220

248

326

505

853

942

873

S66

813

806

774

742

680

585

534

692

736

748 >680

544

211

194

135

248

380

HOT.

453

568

591

717

819

819

90S

942

860

767

190

65

115

164

161

101

89

413

260

217

318

302

290

29S

- 327

375

517

656

662

442

-

Dee.

181

225

374

614

626

568

512

408

353

270

159

202

117

115 124

166

175

142

153

252

302

298

248

103

24

165

608

742

723

356

66

Jan.

26

18

14

13

14

J.3

11

10

14

45

82

82

76

64

74

117

234

290

537

448

534

52 S

511

478

585

1,300

1,970

1,290

1,300

1,810

1,960

Feb.

1,760

1,240

908

748

742

742

1,430

2,960

3,250

1,570

1,660

1,620

2,780

3,250

1,710

1,760

4,930

2,710

2,600

3,170

9,040

10,800

7,500

4,640

6,950

7,200

4,240

2,560

_

_

-

Month

Calendar year 1940. .....................

March. ....................................

April.....................................

 ay.......................................

July......................................

Water year 1940-41......................

Mar.

2,140

10,200

9,870

4,840

5,120

4,560

4,040

2,460

1,680

1,600

1,360

1,470

2,120

19,600

32,700

13,900

5,830

4,520

3,230

2,730

2,880

2,030

1,550

1,600

1,600

1,660

1,770

1,470

1,120

1,120

1,250

Apr.

1,350

2,560

7,250

4,780

4,450

3,870

2,900

2,260

1,600

1,660

1,660

7,060

16,900

16,100

13,700

15,700

11,300

5,960

3,830

2,840

2,260

1,850

1,500

1,500

1,460

1,420

1,920

1,790

1,880

1,500

-

Secondfoot -day a

16,467

13,406

9,373

126,323

14,448

94,470

151,960

144,800

TQ 999

29,589

25,197

24,602

35,459

579,770

««y

1,150

1,210

1,S60

1,560

2,000

1,110

1,150

1,120

1,100

252

450

691

666

419

425

425

425

388

241

241

255

269

274

285

300

300

295

300

285

279

274

M^xlimmi

942

942

742

1,650

1,970

10,800

32 ,700

16,900

2,000

1,300

1,400

1,250

1,720

32,700

June

269

269

597

880

970

854

854

854

872

926

1,140

1,060

1,070

1,040

934

961

1,190

1,300

1,300

1,25O

1,140

1,010

1,010

1,110

1,170

1,180

1,160

1,100

1,050

1,070

-

July

1,170

1,160

1,070

952

952

943

1,040

1,200

1,250

1,240

1,090

1,030

997

1,160

1,350

1,350

1,250

700

655

644

1,030

1,400

987

82

23

18

15

11

S

6

414

Minimum

65

65

24

5

10

742

1,120

1,350

S41

269

5

5

71

5

Aug.

838

1,160

1,160

1,190

1,140

907

836

475

375

27

8

5

2fc5

332

260

321

340

549

744

1,050

1,250

1,250

1,250

1,240

1,230

1,240

1,250

1,230

1,170

755

795

Mean

531

447

302

345

466

3,370

4,902

4,827

 45

986

8X3

794

1,182

1,588

Sept.

731

723

970

1,230

1,190

1,350

1,400

1,400

1,550

1,660

1,720

1,720

1,720

1,300

988

1,050

1,300

1,300

1,350

1,400

1,230

1,300

1,350

1,400

1,350

1,170

1,040

423

73

71

-

Run-off In 

acre-feet

32,660

26,590

18,590

250,500

28,660

187,400

301,400

287,200

39,670

58,690

49,980

43,800

70,330

1,150,000

Peak discharge.- Feb. 22 (4 a.m.) 16,300 aec.-ft.; Mar. 2 (5:50 p.m.) 23,100 aec.-ft.; Mar. 15 

(1:1S a.m.) 45,800 aec.-ft.; Apr. 18 (8:15 p.m.) 21,700 aec.-ft.; Apr. 13 (10s50 p.m.) 24,300 aec.- 

ft.; Apr. 16 (3 p.m.) '19,800 aec.-ft.

Note.- Increase In contents In Bartlett Reservoir during calendar year 1940 was equivalent to a 

mean discharge of 180 aecond-feet; Increase during water year 1940-41 was equivalent to a mean 

discharge of 17.6 aecond-feet.
GILA RIVER BASIN 

Granite Creek near Prescott, Ariz.

295

Location.- Water-stage recorder, lat. 34°34', long. ll£°£7', in SWi sec. 26, T. 14 N., 

K. u w., unsurveyed, at highway bridge, 2 miles north of Prescott and 4i miles 

upstream from Willow Creek. Datum of gage is 5«207.3 feet above mean sea level 

(Arizona Highway Department bench mark).

Drainage area.- 39 square miles.

Records available.- July 1932 to July 1941 (discontinued).

Extremes.- Maximum discharge during period, 1,530 second-feet Mar. 1 (gage height, 7.00 

reet), from rating curve extended above 500 second-feet; no flow on several days in 

October and November.

1932-41: Maximum discharge, 2,900 second-feet Feb. 7, 1937, from rating curve 

extended above 1,500 second-feet; no flow during part of each year.

Remarks.- Records good. City of Prescott takes water tor municipal supply from storage 

reservoirs on tributaries of creek. Water stored for irrigation in reservoir 3 miles 

below station (capacity, about 4,000 acre-feet).

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

28 

29 

30 

31

Oct.

0 

0 

0 

9 

129

16 

5 

2 

1 

.6

.3

.2 

.2 

.1 

.1

0 

0 

.1 

.1 

.1

.1 

0 

0 

0 

0

39 

11 

6 

3 

2 

2

HOT.

1 

.7 

0 

0 

.1

.2 

0 

0 

0 

0

.2 

.1 

0 

0 

0

0 

0 

.3 

6 

5

4 

4 

5 

5 

5

4 

3 

3 

3 

2

Dec.

2

2 

2 

1

1

1 

1 

1 

1 

1

19 

3S 

35 

19 

12

11 

57 

46 

28 

21

16 

13 

12 

167 

142

63 

40 

31 

3S 

71 

128

Jan.

S6 

55 

40 

32 

31

25 

22 

19

le

19

51 

50 

43 

37 

33

26 

21 

19 

17 

15

14 

13 

12 

48 

82

53 

41 

42 

51 

45 

38

Feb.

31 

26 

23 

20 

19

22

41 

34 

29 

26

36 

44 

35 

29 

33

30 

27 

24 

26 

73

212 

131 

S3 

120 

134

103 

77 

58

Month

Ool 

Hoi 

Dec

C

Jai 

Fel 

Mai 

Apj 

Ma, 

Jut 

JvJ 

Au{ 

Se]

1

Salendar year 19*10......................

'11.. ............... .......... , ...

'he perle

Peak discharge. -

a.m.) 487 seo.-ft. 

(5:40 D.m. ) 499 se

Mar.

256 

350 

134 

96 

99

78 

5S 

44 

38 

31

26 

2S 

100 

364 

262

123 

SO 

58 

42 

34

27 

24 

19 

18 

16

14 

13 

11 

11 

10 

12

Apr.

«

Secondfoot -days

226.9 

51.6 

1,020

1,984.2

1,098 

1,546 

2,456 

2,017 

21S 

37.2 

1.8

-

3S 

103 

S2 

55 

48

38 

30 

25 

20 

IS

80 

158 

261 

1S4 

147

150 

110 

82 

60 

47

40 

34 

2S 

24 

21

36 

33 

26 

21 

13

May

17 

16 

14 

14 

12

10 

10 

9 

S 

8

S 

7 

7 

6 

6

6 

5 

5 

5 

5

5 

6 

5 

4 

4

4 

3 

3 

2 

2 

2

Maximum

129 

6 

167

167

36 

212 

364 

261 

17 

2 

.6

-

June

2 

2 

2 

2 

2

2 

2 

2 

2 

2

2

1 

1 

1 

1

1 

1 

9 

9 

S

7 

7 

7 

7 

7

7 

6 

6 

6 

6

July

0.6 

.6 

.6

Aug.

D

Sept.

Minimum Mean ^KS^

0 7.32 450 

0 p 1.72 102 

1 32.9 2,020

0 5.42 3,930

12 35.4 2,180 

19 55.2 3,070 

10 79.2 4,870 

IS 67.2 4,000 

2 7.0 432 

.6 1.24 73.8 

.6 .6 3.6

' 17,200

Oct. 5 (5 a.m.) 530 sec. -ft. J Dec. 24 (4:10 p.m.) 616 sec. -ft. 5 Feb. 21 (5:15 

 Kar. 1 (10:50 p.m.) 1,530 sec. -ft.; Mar. 14 (1:35 p.m.) 579 sec. -ft,; Anr. 13 

:.-ft.
296 GILA RIVER BASIN

Oak Creek near Cornville, Ariz.

Location.- Water-stage recorder, lat. 34°46', long. lll°53 f , in SEi sec. 23, T. 16 N., 

R. 4 E.-, 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 1941.

Extremes.- Maximum discharge during year, 5,280 second-feet Mar. 14 (gage height, 7.36 

reet); minimum, 10 second-feet June 23, 24 (gage height, 2.16 feet).

1940-41: Maximum discharge, that of Mar. 14, 1941; minimum, 6 second-feet July 

27, 1940 (gage height, 1.98 feet).

Maximum stage known, 23 feet (from floodmarks) Mar. 3, 1938.

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

rair. Several small diversions above station for irrigation.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1

a

3 

4

5

6

7 

8 

9 

10

11 

13 

13 

14 

16

16 

17 

18 

19 

30

31 

22 

23 

24 

35

36 

37 

38 

29 

30 

31

Oct.

48 

42

39 

40 

1,790

353 

97 

69 

46 

40

3S 

37 

37 

37 

36

36 

36 

36 

35 

34

34

31 

31 

31 

31

35 

80 

346 

132 

76 

52

NOT.

43

39 

37 

36 

36

37 

37 

37 

36 

39

3S 

39 

38 

38 

3S

39 

38 

40 

464 

242

188 

169 

116 

104 

109

83 

64

0 5S 

' 46 

46

Dec.

49 

47 

46 

43 

40

39 

38 

37 

36 

38

363 

748 

431 

364 

161

100 

475 

937 

364 

204

138 

95 

80 

506 

1,560

442

246 

167 

139 

401 

538

Jan.

388

310 

148 

100 

S3

116 

78 

63 

71 

103

305 

313 

333 

170 

156

114 

83 

61 

53 

60

50 

50 

50 

66 

277

170 

183 

190 

203 

199 

164

Feb.

134 

113 

103 

96 

91

125 

468 

313 

210 

197

299 

749 

38S 

336 

373

711 

474 

467 

446 

1,490

3,440 

1,180 

936 

991 

1,100

666 

422 

3S2

Month

Oct 

Noi 

Dec

C

Jan 

F*b 

Mar

tej

JUE

Jul 

Aug 

Sep

*

alendar year

ater year 1940-4

Mar.

717 

1,660 

568 

378 

341

360 

279 

210 

210 

230

alSO 

a!70 

976 

2,840 

1,660

537 

376 

 366 

416 

436

343 

a230 

260 

335 

329

aSlO 

a!40 

a!50 

alSO 

al40 

a!70

Apr.

aSOO 

6S4 

785 

770 

825

531 

a240 

aSOO 

a!70 

a!40

&230 

1,490 

1,320 

763 

1,170

2,140 

1,570 

651 

363 

241

180 

a!40 

alSO 

alOO 

alOO

alSO 

240 

330 

200 

120

Secondfoot -days

3,689 

2,370 

8,639

-

4,385 

15,596 

15,366 

15,932 

1,232 

566 

546 

674 

1,125

70,120

Itoy

96 

82 

79 

S6 

10S

82 

65 

53 

46 

39

37 

34 

31 

24 

23

21 

20 

20 

20 

21

23 

23 

23 

23 

23

24 

23 

21 

21 

21 

21

Maximum

1,790 

464 

1,560

-

388

2,440 

2,840 

2,140 

108 

28 

34 

43 

154

3,840

June

21 

20 

20 

19 

20

28

25 

27 

28 

28

23 

IS 

17 

18 

18

17 

17 

16 

17 

17

16 

14 

11 

16 

16

14 

14 

16 

17 

18

July

16 

15 

15 

15 

14

16

le

17 

17

18

18 

20 

17 

19 

20

19 

IS 

17 

18 

IS

16 

14 

13 

20 

24

23 

21 

20 

IS 

16 

16

Minimum

31 

36 

36

-

50 

91 

140 

100 

20 

11 

13 

16 

15

11

Aug.

17 

17 

17 

17 

20

33 

33 

36 

28 

43

38 

29 

25 

23 

25

26 

24 

24 

22 

20

16 

16 

17 

17 

17

17 

16 

16 

IS 

19 

21

Mean

119 

79.0 

279

-

141 

557 

496 

531 

39.7 

1S.9 

17.6 

31.7 

37.5

193

Sept.

18 

17 

16 

17 

17

16 

16 

16 

16 

16

16 

18 

164 

96 

58

39 

34 

101 

66 

37

31 

30 

30 

30 

30

30 

27 

30 

77 

35

Run-off In 

acre-feet

7,320 

4,700 

17,140

-

8,700 

30,930 

30,480 

Si, 600 

2,440 

1,120 

1,060 

1,340 

2,330

139,100

Peak discharge.- Oct. 5 (9 a.m.) 4,100 see.-ft.; Dec. 25 (3 a.m.) 3,300 sec.-ft. 5 Fefc. 21 

(5 a.m.) 3,410 see.-ft.; Mar. 1 (12 p.m.) 3,980 sec.-ft.; Mar. 14 (9:40 a-m.) 5,280 sac.-ft.; Apr. 

16 (8:30 o.m.) 3,860 sec.-ft.

a No gane-heljjht record; discharge commuted on basis of known upper limit of discharge, adjacent 

record, and weather records.
GILA RIVER BASIN 897

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

Location.- Water-stage recorder and weir, lat. 33°34', long 111°40', in NEfc sec. 30, T. 

3 N., R. 7 E., on canal, 2 miles northwest of mouth of Verde River, 3.9 miles downstream from intake, and 4i miles south of McDowell.

Records available.- February 1922 to September 1941 (monthly diversion).

Remarks.- Water is diverted from infiltration galleries and shallow wells on right bank 

of Verde River in SEi sec. 6, T. 3 N., R. 7 E., three-quarters of a mile downstream 

from NcDowell and 6-J miles upstream from mouth of Verde River 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 second-feet, water year October 1940 to 

September 1941

Month

Calendar year 1940.....

May......................

Water year 1940-41.....

Maximum

19

46

49

44

«Q

49

Minimum

0

0

Mean

01 e

26.7

24.5

 Run-off In 

a ore-feet

19,420

9V9

17,600

Diversions from Salt River at Granite Reef Dam, Ariz.

Location.- Water-stage recorders at heads of Arizona and South canals, which divert on 

ngnt and left banks, respectively, at Granite Reef Dam on Salt River, in lat. 33°31' 

long. 111°42', 3i miles downstream from Verde River.

Records available.- January 1913 to September 1941 (monthly diversion).

Remarks.- Records given herein are those of discharge at the two gaging stations less 

now 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 at gaging stations computed on basis of gage heights and 

108 current-meter measurements; flow returned to river at canal wasteway computed 

from records for rated gates or weirs.

Flow at Granite Reef Dam is regulated by Roosevelt Dam, completed in 1913, and 

three other dams on Salt River between Roosevelt Dam arid mouth of Verde River (see 

p. 286), namely, Mormon Flat Dam, completed in 1925, Horse Mesa Dam, completed in 

1927, and Stewart Mountain Dam, completed in 1930, and by Bartlett Dam on Verde 

River, completed In 1939.

Cooperation.- Records furnished by Salt River Valley Water "Users' Association.

Monthly diversions, In second-feet, water year October 1940 to 

September 1941

Month

Calendar year 1940. ....

May......................

Water year 1940-41.....

Maximum

869

1,860

1 V£0

3,460

Minimum

0

482

0

Mean

81S

2 440

2 592

1,481

Run-off In 

acre-feet

594,000

3.48 200

1,072,000
298 GIIA RIVER BASIN

Agua Frla River near Mayer, Arlz.

Location.- Water-stage recorder, lat. 34°19', long. 112°04', in HWiSEi sec. 20, T. 11 N., 

R. 3 E., at Sycamore darn site, 700 feet downstream from Bigbug1 Creek and 12 miles south- 

'east 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 1941.

Extremes.- Maximum discharge during year, 13,000 second-feet Mar. 1 (gage height, 11.97 

feet), by slope-area method; minimum, 0.2 second-foot Nov. 16.

1940-41: Maximum discharge, that of Mar. 1, 1941; minimum, 0.1 second-foot July 28- 

30 and Aug. 2-3, 1940.

Remarks.- Records good except those for Dec. 11 to Apr. 30 and those above 100 second-feet, 

which are fair. 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 1940 to September 1941

B«y

i

2 

S

4 

5

6 

7 

8 

9 

10

11 

12 

IS 

14 

15

16 

17 

18 

19 

20

21 

22 

25 

24 

25

26 

27 

28 

£9

SO 

51

Oct,

a3 

a3 

a2 

a2 

385

13 

4 

3 

6 

2

.9

.7 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

17 

8 

2 

2 

2 

Z

HOT.

2 

2 

2 

2 

2

2 

2

1 

1 

3

1 

1 

1 

.9 

.5

.4 

.5 

.8 

2 

2

2 

2 

3 

2 

2

3 

2 

2 

2 

2

Dec.

0.9 

2 

8 

7 

7

7 

5 

5 

7 

1

30 

200 

35 

4 

3

3 

45 

160 

20 

5

3 

2 

2 

1,250 

500

60 

15 

8 

7 

550 

420

Octo 

love 

Dece

Ca 

Janu

(arc 

Apr! 

Mav.

June 

July 

lugu 

Sept

Wa

lendar year 1940..

ter year 1940-41..

Jan.

430 

130 

70 

40 

27

19 

11 

7 

6 

6

17 

89 

64 

32 

19

17

14 

9 

7 

7

6 

5 

5 

7 

79

62 

25 

23 

67 

40 

Ifi

Feb.

6 

5 

5 

5 

5

5 

160 

130 

50

15

10 

9 

9 

7 

6

10 

8 

6 

20 

230

450 

170 

180 

120 

283

129 

62 

43

Mar.

2,020 

910 

250 

120 

210

180 

100 

70 

70 

60

50 

45 

88 

1.61O 

700

280 

190 

140 

120 

90

80 

60 

60 

55 

50

50 

40 

35 

35 

30 

30

Apr.

45 

70 

150 

60 

48

45 

4P 

40 

25

15

380 

2,460 

2,300 

760 

682

538 

386 

255 

200 

a!50

alOO 

a 80 

a60 

aSO 

a40

120 

a!30 

a90 

aSO 

aSO

H«r

42 

45 

40 

38 

39

34 

31 

29 

27 

24

20 

19 

16 

16 

16

15 

14 

12 

10 

10

10 

13 

11 

11 

16

12 

8 

6 

8 

8 

8

Observed

Secondfoot - 

days

464.1 

51.1 

3,330.5

7,381.6

1,356 

2,138 

7,828 

9,429 

608 

144 

431 

502 

445

26,726.7

Discharge

Maximum

385 

3 

1,250

1,250

430 

45O 

2,020 

2,460 

45 

13 

181 

144 

200

2,460

Peak discharge.- Dec. 34 (8:10 n.m. > 6

Minimum Mean

0.5 15.0 

.4 1.70 

.5 107

.1 20.2

5 43.7 

5 76.4 

30 253 

15 314 

6 19.6 

2 4.8 

.5 13.9 

.5 16.2 

.5 14.8

.4 73.2

Runoff 

in 

acre-feet

921 

101 

6,610

14,640

2,690 

4,240 

15,530 

18,700 

1,210 

286 

855 

996 

883

53,020

June

8 

7 

7 

5 

9

13 

10 

8 

7 

6

5 

5 

5 

5 

5

4 

3 

3 

3 

2

3 

3 

3 

3 

2

2 

2 

2 

2 

2

Diversion

Perry 

canal 

(acre-feet!

23 

30 

10

308

0 

0 

0 

0 

0 

38 

38 

35 

3

177

July

2 

2 

2 

2 

2

2 

9 

14 

15

5

4 

3 

2 

2 

2

1 

4 

118 

17 

5

1 

1 

.5 

181 

17

7 

4 

3 

2

1 

.5

Aug.

0.5 

.5 

.5 

78 

54

25 

19 

144 

110 

30

6

4 

4 

4 

3

3 

3 

2 

2 

2

1 

1 

1 

.5 

.5

.5 

.5 

.5 

.5

1 

.5

Sept.

0.5 

.5 

.5 

.5 

.5

.5 

.5 

.5 

.5 

.5

.5 

.5 

120 

6 

3

2 

200 

50 

6 

5

4 

4 

4 

4 

4

4 

4 

6 

7 

6

Adjusted for diversion

Runoff 

in 

acre-feet

944 

131 

6,620

14,950

2,690 

4,240 

15,530 

18,700 

1,210 

324 

893 

1,030 

886

53,200

Mean 

(secondfeet)

15.3 

2.20 

108

20.6

43.7 

76.4 

253 

314 

19.6 

5.4 

14.5 

16.8 

14.9

73.5

830 sec. -ft.; Mar. 1 CIO p.m.) 13,000 sec. -ft.; Mar. 14

(5 p.m.; 7,100 sec.-ft.; Apr. 11 (11:50 p.m.) 4,200 sec.-ft.; Apr. 12 (4:40 p.m.) 3,660 see.-ft.; 

Apr. 13 (6 p.m.) 4,480 sec.-ft.

a No gage-height record; discharge Oct. 1-4 computed on basla of recorded range in atage and 

weather records; Apr. 20-25, 27-30 on basis of known upper limit of discharge, adjacent good record, and weather records.
GILA RWER BASIN 299

Agua Pria River at Lake Pleasant Dan, Ariz.

Location.- Staff gage, lat. 33°51', long. 112°16', in NWi sec. 21, T. 6 N., R. IE., at 

left upstream end of Lake Pleasant Dam, 24i miles upstream from mouth of 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 1924 (published, as Agua Frla River near 

Glendale, Ariz.), October 1933 to September 1941.

Extremes.- Maximum discharge known, about 105,000 second-feet Nov. 27, 1919; no flow during spring and summer of several years.

Remarks.- Records poor. Figures given herein represent flow into Lake Pleasant. Discharge 

computed on basis of three factors as follows: 1. Change In contents of Lake Pleasant 

and In contents of small reservoir behind diversion dam li 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 and frequently checked by a Clausen-Plerce weir rule; and (b) spill from 

Lake Pleasant as measured over diversion dan, computed from staff-gage readings of head 

and theoretical weir rating for the dam, checked by one discharge measurement. 

3. Effect of rainfall and evaporation on lake; evaporation assumed as 0.7 of that 

measured once daily In 3-foot-square buried land pan 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 the Maricopa County Munlcipal Water Conservation District No. 1.

Monthly discharge, water year October 1940 to September 1941

Month

Hay.........................

Mean 

(second-feet)

289

Runoff In 

acre -feet

209,200

Note.- Spill over Lake Pleasant diversion dam occurred 

Apr. 15 to Hay 13, 1941 and amounted to 10,370 acre-feet, 

which Is Included In the above table.

461676 O-42-20
300 GILA RIVER BASIN

Lake Pleasant at Lake Pleasant Dam, Ariz.

Location.- Staff gage, lat. 33°51', long. 112°16', in NWi sec. 21, T. 6 N., R. 1 E., at 

left upstream end of Lake Pleasant Dam on Agua Fria River. Datum of gage is 1,431.2 

feet above mean sea level, datum of 1929.

Drainage area.- 1,460 square miles.

Records available.- February 1928 to September 1941.

Extremes.- Maximum contents during year, 178,500 acre-feet Apr. 19 (gage height, 170.13 

feet} of which 500 acre-feet was uncontrolled storage; minimum, 73 acre-feet Dec. 3, 4. 

1928-41: Maximum contents, that of Apr. 19, 1941; 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, 178,000 acre-feet between gage heights 57.0 feet (22.0 feet above center line 

of outlet works) and 170.0 feet (top of spillway gates). There is no storage below 

gage height 57.0 feet because of accumulated silt. Water released from reservoir flows 

down river channel li miles to diversion dam where it is diverted for irrigation near 

Beardsley. Figures given herein represent usable contents in Lake Pleasant except that 

storage above 178,000 acre-feet is uncontrolled. Contents of small reservoir forned by 

diversion dam is not included.

Cooperation.- Gage-height record furnished by Maricopa County Municipal Water Conservation 

District No. 1.

Contents at 5 p.m., In acre-feet, water year October 1940 to September 1941

Day

1

a

s

4

6

6

7

S

9

10

11

12

13

14

16

16

17

IS

19

20

21

22

23

24

26

26

27

28

29

30

31

Oct.

690

694

694

696

2,610

3,510

3,610

3,630

3,600

3,420

3,330

3,240

3,160

3,060

2,950

2,840

2,750

2,640

2,520

2,440

2,360

2,220

2,140

2,070

1,980

1,890

1,S60

1,860

1,820

1,790

1,760

NOV.

1,740

1,720

1,690

1,670

1,610

1,570

1,550

1,520

1,450

1,400

1,380

1,340

1,270

1,200

1,130

1.C60

1,030

964

901

847

779

722

671

613

571

523

462

400

335

264

-

Dec.

213

126

73

73

76

85

94

99

107

116

131

142

413

516

555

577

598

900

1,200

1,320

1,380

1,420

1,440

1,510

9,770

11,000

11,300

11,500

11,600

13,400

19,200

Jan.

21,900

23 , 000

23,500

23 , 800

24,000

24,300

24,600

24,700

24,800

24,900

25,100

25,400

25.900

26,300

26,600

26,800

26,900

27,000

27,100

27,200

27,300

27,400

27,500

27,600

28,000

28,500

29,000

29,200

29,700

30,300

30,800

Feb.

31,100

31,400

31,600

31,800

31,900

32,100

32,400

33,200

33,600

33,900

34,100

34,300

34,500

34,700

34,900

35,100

35,300

35,500

35,700

36,200

37,700

39,200

40,500

41,400

43,900

45,700

47,000

47,800

_

_

-

Mar.

48,400

68,900

73,200

74,900

81,300

84,200

85,800

86,900

87,600

88,200

SS.700

89,300

90,300

92,800

110,000

114,100

115,800

117,200

118,100

118,900

119,400

119,900

120,300

120,500

120,800

121,000

121,200

121,300

121,400

121,600

121,700

Apr.

122,000

122,400

123,300

123,900

124,300

124,900

125,000

125,100

125,400

125,600

125,700

135,500

151,100

166,400

171,500

175 , 000

177,800

178,400

178,500

178,300

178,100

178,000

177,900

178,100

178,100

17S.200

178,200

178,200

178,100

178,100

-

May

178,000

178,200

178,200

178,100

178,000

177,900

177,900

177,800

177,700

177,600

177,500

177,400

177,400

177,400

177,300

177,200

177,000

176,800

176,500

176,100

175, POO

175,700

175,400

175,200

174,900

174,600

174,300

174,000

173,600

173,300

173,000

June

172,600

172,300

171,900

171,600

171,100

170,700

170,300

169,900

169,400

169,100

168,600

168,100

167,600

167,100

166,500

166,000

165,400

164,800

164,300

163,700

163,000

162,400

161,800

161,000

160,300

159,600

158,800

158,100

157,500

156,700

-

July

156,000

155,300

154,500

153,900

153,300

153,600

151,800

151,100

150,400

149,700

148,800

148,000

147,200

146,400

145,600

144,700

144,000

143,200

143,400

141,700

140,900

140,200

139,400

139,600

139,800

139,400

138,900

138,400

137,800

137,100

136,500

Aug.

135,900

135,200

134,500

133,700

133,300

132,700

132,200

131,600

131,100

131,200

130,700

130,100

129,400

128,900

128,000

127,400

126,900

126,200

125,600

124,800

124,200

123,500

122,700

121,900

121,200

120,500

119,800

118,900

118,200

117,500

116,800

Sept.

115,900

115,800

114,400

113,600

112,700

112,000

111,200

110,500

109,700

108,900

108,100

107,300

106,600

106,100

105,500

104,900

104,100

103,700

103,200

102,700

102,300

101,800

101,300

100,700

100,100

99,400

98,900

98,600

98,300

97,900

~

Monthly gage height and contents, water year October 1940 to September 1941

Date

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

Calendar year 1940. . .

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

Water year 1940-41...

Gage height 

If eet }

99.80

-

120 95

152 21

143.47

-

Contents 

(acre-feet)

19,200

-

97,900

-

Change In contents 

during month 

(acre -feet)

+18,936

+11,900

+73 900

-18,900

+97,200
OIIA RIVER BASIN 301

Hassayaripa River near Wagoner, Aris.

Location.- Water-stage recorder, lat. .34°18', long. 112°34', in IffiiSEi sec. 9, T. 11 N., R. 

3 W., at bridge on Kirkland Junction-Wagoner road, 5& miles upstream from Milk Creek and 

7j miles upstream frora Wagoner. Datum of gage is 3,741.51 feet above mean sea level, 

datum of 1929 (preliminary figure).

DralnaKe area.- 79 square miles.

Records available.- January 1940 to September 1941.

Extremes.- Maximum discharge during year, 1,700 second-feet Apr. 16 (gage height, 3.1 

feet); minimum, 1 second-foot on many days.

1940-41: Maximum discharge, that of Apr. 16, 1941; minimum, 0.8 second-foot on 

several days in 1940.

Remarks.- Records fair except those for Mar. 15 to Sept. 30 and those above 100 secondfeet, which are poor. Small diversions above station for irrigation.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

3 

3 

4

e

6 

7

e

9

10

11

12 

13

14 

15

16 

17 

18 

19 

20

21 

22 

23 

24 

25

26 

27 

2S 

29 

30 

31

Oct.

2 

1 

1 

6 

90

36 

14 

2 

2 

2

2

1 

1 

2 

2

1 

1 

2 

2

1

2 

2 

2 

2 

2

2 

2 

2 

2 

2 

1

Nov.

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

Dec.

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

2 

1 

1 

1

1 

2 

1 

1

1

1 

1 

1 

20 

60

15 

10 

2 

2 

4 

10

Jan.

13 

16 

16 

7 

3

3 

2 

2 

2 

3

3 

7 

10 

10 

13

11 

10 

7 

6 

4

3 

2

1 

1 

12

10 

9 

9 

17 

21 

20

Feb.

IS 

17 

21 

20 

12

10 

12 

8 

7 

7

7 

6 

5 

4 

4

6 

3 

2 

2 

20

250 

230 

150 

190 

160

80 

50 

60

Month

Oct 

Hoi 

Dec

C

Jar 

Pel 

Hat 

Apl 

Ma3 

Jur 

Ju3 

Aug 

Set

VI

alendar year 19' 0. .....................

ater year 1940-'

Mar.

250 

490 

100 

65 

70

85 

110 

250 

120 

60

92 

40 

70 

230 

180

120 

120 

140 

140 

100

90 

80 

100 

100 

100

55 

45 

40 

40 

37 

33

Apr.

73 

100 

89 

81 

100

81 

61 

44 

36 

30

75 

214 

166 

297 

590

670 

260 

180 

150 

100

90 

90 

95 

150 

90

85 

89 

76 

65

, 55

Secondfoot-days

192 

31 

148

762.1

253 

1,361 

3,657 

4,302 

798 

303 

194 

277 

176

11,592

May

50 

40 

40 

40 

35

35 

33 

29 

28 

28

26 

28 

26 

23 

23

21 

21 

20 

20 

20

21 

22 

22 

21 

21

19 

 IS 

17 

17 

17 

17

Maximum

90 

2 

60

90

21 

250 

490 

670 

50 

IS 

25 

50 

35

670

June

17 

17 

17 

17 

17

18 

15 

14 

13 

13

12 

10 

9 

10 

9

9 

8 

7 

7 

6

6 

6 

5

5 

5

6 

6 

6 

6 

7

July

7 

6 

6

5 

5

5 

7 

5 

4 

4

5 

5 

5 

4

4

4 

4 

4 

3 

3

25 

9 

9 

13 

9

8 

6 

5 

5 

3 

5

Minimum

1 

1 

1

8

1 

2 

37 

30 

17 

5 

3 

4 

2

1

Aug.

6

6 

6 

6 

7

6 

6 

5 

30 

30

12 

9 

6 

5 

5

5 

4 

5 

7 

7

6 

S

5 

5 

5

5 

5 

5 

50 

8 

5

Dean

6.2 

1.0 

4.8

2.08

8.2 

48.6 

115 

143 

25.7 

10.1 

6.3 

6.9 

5.9

31.8

Sept.

5 

4

5 

5 

5

4

3 

3 

3 

3

2 

7 

35 

25 

S

6 

4

5 

5 

4

3 

3 

3 

4 

4

4 

3 

4

4 

3

Run- off In 

acre-feet

381 

61 

294

1,510

502 

2,700 

7,060 

3,530 

1,680 

601 

385 

549 

349

22,990

Peak discharge.- Feb. 21 (7s30 p.m.) 850 sec.-ft.; Mar. 2 (12s05 a.m.) 1,250 seo.-ft.; Apr. 16 

(4:30 a.m.) 1,700 seo.-ft.

Faulty Intake action below about 100 second-feet, Mar. 15 to Sept. 30; discharge oonputed on 

basis of 13 discharge measurements and gage-height record of seepage Into well.
302 GILA. RIVER BASIN

Hassayampa River near Morrlstown, Ariz.

Location.- Water-stage recorder, lat. 33°53', long. 112°39', In SEi sec. 3, T. 6 N., R. 4 

W., 600 feet downstream from San Domingo wash, 900 feet upstream from bridge of Atchlson, 

Topeka, and Santa Fe R. R., and 3.0 miles northwest of Morrlstown (formerly known as 

Hot Springs Junction). Datum of gage Is 1,831.16 feet above mean sea level, datum of 

1929.

Drainage area.- 774 square miles.

Records available.- October 1938 to September 1941.

Extremes.- Maximum discharge during year, 6,100 second-feet Mar. 2 (gage height, 8.36 feet) 

by slope-area method; no flow on many days.

1938-41: Maximum discharge, 6,200 second-feet Sept. 6, 1939 (gage height, 8.7 feet) 

from rating curve extended above 1,600 second-feet on basis of slope-area measurement 

at gage height 8.36 feet; no flow on many days.

Remarks.- Records poor. Many small diversions above station for Irrigation and mining.

Discharge, in second-feet, water year October 1940 to September 1941

Day

1 

2 

3 

4 

5

6

e

9

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

21 

22 

23 

24 

25

26 

27 

26 

,29 So

31

Oct.

0 

0 

0 

0 

400

S

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0

1 1 1 1 1

Nov.

, 1

1 

1 

1 

1

1

1 

1 

1

0 

0 

0 

0 

0

0 

0 

0

1

2

2

1 

1 

1

1

1 

1 

1 

1 

1

Dec.

1 

1 

1 

1 

1

1

1 

1 

2

2 

2 

2 

2 

2

2 

2 

5 

2 

2

2 

2 

1 

450 

270

10 

5 

3 

2 

2 

82

Jan.

10 

5

5 

4 

4

4

3 

3 

3

5 

20 

10 

10 

5

5 

5 

5 

5 

5

5 

5 

5 

5 

20

20 

10 

10 

30 

20 

15

Feb.

10 

10 

10 

10 

10

10 

15 

10 

10 

10

10 

10 

10 

10 

10

10 

10 

10 

10 

90

330 

360 

270 

290 

1,080

471 

436 

329

Month

Got 

NOT 

Dec

C

Jar 

Pet 

Mar

Apr 

Kaj 

Jur 

Ju3 

Aug 

Sej

1

mary

11.....................................

ater year 1940-'

Mar.

760 

2,050 

690 

414 

840

580 

410 

310 

240 

190

171 

149 

430 

1,500 

1,450

820 

640 

470 

350 

230

200 

150 

140 

120 

80

85 

70 

65 

65 

57 

59

Apr.

100 

120 

200 

181 

170

140 

120 

95 

100 

100

250 

1,850 

1,450 

1,200 

970

890 

820 

620 

440 

450

290 

300 

300 

270 

290

300 

260 

200 

144 

110

Secondfoot -days

414 

24 

863

1,4SO.O

265 

3,851 

13,785 

12,730 

1,370 

34 

323 

595 

37

34,291

May

131 

157 

140 

120 

100

8S 

72 

57 

55 

45

41 

41 

34 

31 

29

25 

23. 

18 

16 

16

16 

16 

17 

15 

15

13 

11 

9 

7 

6 

6

Maximum

400 

2 

450

450

30 

1,080 

2,050 

1,850 

157 

5 

230 

300 

4

2,050

June

5 

4 

2 

2 

2

2 

2 

2 

2

1

1 

1

1 

1 

1

1 

1 

1 

1

1

0 

0 

0 

0 

0

0 

0 

0 

0 

0

July .

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0

1 

5

1

0 

2

1 

230 

SO

1 

1 

1 

0 

0 

0

Minimum

0 

0

1

0

3 

10 

57 

95 

6 

0 

0 

0 

1

0

Aug.

0 

0 

0 

0 

0

0 

0 

0 

300 

50

4

1 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

0 

0

0 

0 

0 

210 

25 

5

Mean

13.4 

.8 

27.8

4.04

8.5 

13S 

445 

424 

44.2 

1.1 

10.4 

19.2 

1.2

93.9

Sept.

4 

3 

2 

2 

1

1 

1 

1

I

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1 

1 

1 

1 

1

1

1 

1 

1 

1

Run-off In 

acre-feet

821 

48 

1,710

S ,940

586 

7,640 

87,340 

25,250 

2,720 

67 

641 

1,180 

73

68,020

Peak discharge.- Dee. 24 (9s30 p.m.) 3,350 sec.-ft.; Mar. 2 (12:20 a.m.) 6,100 sec.-ft.; Mar. 14 

(7j20 p.m.) 4,060 see.-ft.; Apr. 11 (11:50 p.m.) 3,020 see.-ft.; Aug. 9 (7t40 p.m.) 3,460 sec.-ft.

Note.- No gage-height record at low and medium stages Oct. 1 to Nov. 26, Dec. 26 to Feb. 19 and 

Aug. 10 to Sept. 30; discharge computed on basis of discharge measurements and field estimates, 

weather records, adjoining record, records for Bassayampa River near Wagoner and Agua Fria River 

near Mayor, and (Aug. 11-16) recorded ground-water elevations.
GILA RIVKR RASIN 303

Oillespie canal at Gillespie Dam, Arlz.

Location.- Water-stage recorder, lat. 33°14', long. 112°45', In SEiNEi sec. 28, T. 2 3., 

R. 5 W., 200 feet downstream from head gates at Gillespie Dam. Datum of gage is 743.91 

feet above mean sea level, datum of 1929.

Records available.- May 1935 to September 1941.

Extreries.- Maximum discharge during year, 209 second-feet Sept. 30 (gage height, 7.98 feet}; no flow on several days.

1935-41: Maximum discharge, 280 second-feet Aug. 18, 1936 (gage height, 7.13 feet); 

no flow on several days during 1940-41.

Remarks.- Records good. Canal diverts water from left bank of Gila River at Gillespie Dam 

for irrigation near Gila Bend. For records of the other diversion at this dam, see 

Enterprise canal at Gillespie Dam on following page.

Discharge, in second-feet, water year October 1940 to September 1941

Cay

1 

Z 

3 

4 

6

6 

7 

8 

9 

10

11 

12 

13 

14 

16

16 

17 

18 

19 

20

21 

22 

23 

24 

26

26 

27 

28 

29 

SO 

31

Oct.

42 

37 

37 

41 

77

116 

74 

5S 

52 

52

52 

51 

51 

50 

51

50 

50 

48 

48 

49

49 

50 

49 

49 

46

45 

47 

52 

53 

54 

55

Nov.

58 

58 

58 

55 

53

53 

51 

58 

53 

55

53 

57 

66 

61 

55

54 

54 

58 

59 

64

187 

125 

0 

36 

97

102 

95 

88 

94 

98

Dec.

92

91 

86 

87 

89

89 

91 

91 

88 

86

87 

89 

96 

94 

8S

90 

96 

99 

102 

105

106 

111 

114 

128 

109

0 

42 

86 

113 

57 

66

Jan.

93 

110 

122 

131 

135

136 

162 

188 

182 

168

161 

161 

168 

172 

172

173 

172 

172 

172 

171

171 

170 

169 

168 

168

168 

174 

179 

148 

164 

166

Feb.

160 

163 

167 

168 

168

167 

166 

168 

166 

166

166 

166 

168 

168 

167

164 

166 

168 

166 

164

166 

166 

167 

154 

135

171 

168 

168

Month

Oot 

Hoi 

Dec

C

Jai 

Fet 

Hai 

Api

sJtO 

fiat 

Sej

1

alendar year 19'10. .....................

fater year 1940-'

 Mar.

164 

157 

169 

171 

164

170 

167 

168 

170 

169

171 

170 

166 

158 

150

150 

106 

82 

88 

142

166 

166 

109 

119 

186

186 

187 

186 

124 

88 

176

Apr.

179 

180 

178 

178 

174

174 

173 

174 

172 

174

176 

176 

170 

160 

156

167 

175 

168 

172 

170

169 

168 

174 

175 

172

176 

175 

179 

181 

176

Secondfoot -days

1,635 

2,031 

2,768

27,958

4,966 

4,617 

4,745 

5,191 

5,113 

5,161 

3,877 

4,906 

3,370

48,380

May

169 

16S 

168 

171 

166

166 

170 

172 

172 

170

166 

168 

172 

174 

168

172 

174 

149 

0 

73

175 

171 

176 

175 

178

182 

184 

188 

191 

192 

193

IteTlmmn

116 

187

128

203

188 

171 

187 

181 

193 

204 

190 

194 

182

204

June

193 

193 

194 

197 

42

164 

192 

203 

204 

204

203 

201 

198 

195 

191

187 

185 

182 

180 

174

168 

164 

157 

150 

145

143

142 

140 

136 

.134

July

131 

130 

127 

123 

125

122 

118 

112 

105 

106

106 

107 

103 

98 

98

96 

99 

109 

113 

112

111 

105 

104 

IDS 

148

174 

184 

190 

184 

177 

152

Minimum

37 

0 

0

0

93 

135 

82 

156 

0 

42 

96 

116 

88

0

Aug.

133 

120 

116 

122 

127

118 

118 

126 

152 

180

191 

1S9 

188 

191 

192

192 

192 

194 

191 

186

188 

191 

192 

184 

169

148 

131 

124 

119 

120 

122

Mean

52.7 

67.7 

89.3

76.4

160 

165 

153 

173 

165 

172 

125 

158 

112

133

Sept.

133 

126 

116 

113 

108

104 

99 

94 

S9 

88

90 

91 

92 

95 

96

93 

94 

91 

88 

119

182 

178 

160 

130 

110

102 

100 

100 

117 

172

Run-off in 

acre-feet

3,240 

4,030 

5,490

55,450

9,850 

9,160 

9,410 

10,300 

10,140 

10,240 

7,690 

9,730 

6,680

95,960
304 GILA RIVER BASIN

Enterprise canal at Gillespie Dam, Ariz.

Location.- Water-stage recorder, lat. 33°13', long. 112*46', in SWiNEi sec. 28, T. 2 S., 

R. 5 W., 600 feet downstream from intake at Gillespie Dam. Datum of gage is 732.15 

feet above mean sea level, datum of 1929.

Records available.- June 1935 to September 1939 (discharge measurements only), October 

1939 to September 1941.

Extremes.- Maximum daily discharge during year, 34 second-feet Mar. 17; no flow May 19,

1939-41: Maximum daily discharge, that of Mar. 17, 1941; no flow May 19, June 5, 

1941.

Remarks.- Records good except those above 25 Second-feet, which are poor. Canal diverts 

water from right bank of Gila River at Gillesple Dan for Irrigation between dam and 

Glla Bend. For records of the other diversion at this dam, see Gillesple canal at 

Gillespie Dam, on preceding page.

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

Z

3 

4 

5

6 

7 

8 

9 

10

11 

12 

13 

14 

16

18 

17 

18 

19 

20

21 

22

23 

24 

26

26 

27 

28 

29 

30 

31

Oct.

11 

11 

11 

11 

14

18 

15 

13 

12 

12

11 

12 

12 

12 

12

12 

12 

11 

11 

11

11 

11 

10 

10 

9.8

9.8 

9.8 

9.8 

9.2 

9.5 

9.3

NOT.

9.3 

9.5 

9.7 

9.8 

10

10 

10 

10 

11 

11

10 

10 

11 

10 

9.7

9.8 

9.8 

10 

10 

10

18 

13 

.2 

3.1 

14

14 

13 

13 

13 

13

Dec.

13 

12 

10 

10 

10

10 

10 

10 

9.9 

9.7

9.7 

9.9 

9.9 

9.9 

9.6

9.6 

9.7 

9.7 

9.9 

9.9

9.9 

10 

10 

8.8 

1.9

.1 

.7 

1.2 

1.3 

4.0 

1.4

Jan.

9.9 

18 

18 

18 

16

14 

16 

17 

17 

14

.6 

.6 

.6 

5.6 

17

16 

16 

16 

16 

15

15 

15 

15 

15 

11

7.4 

7.6 

7.6 

7.6 

7.6 

7.9

Feb.

8.0 

7.9 

7.9 

7.7 

11

11 

11 

11 

12 

12

10 

4.0 

5,9 

5'. 8 

2.7

.6 

.6 

.6 

.5 

1.2

.5 

.5 

.5 

2.1 

1.7

1.2 

1.2 

1.1

Month

00 1 

Not 

Dec

C

Jar 

P«l 

Max 

Apr 

Ha; 

Ju» 

Jul Aug

Sej 

H

alendar year 1940.. ....................

ater year 1940-4

Bar.

1.7 

1.0 

4.0 

6.0 

8.7

8.8 

7.9 

7.6 

7.3 

7.6

13 

11 

7.4 

11 

8.0

29 

34 

15 

5.7 

4.1

11 

14 

9.7 

8.5 

13

13 

13 

12 

7.8 

4.2 

15

Apr.

14 

10 

15 

16 

17

17 

17 

16 

16 

Ifi

11 

10 

15 

17 

18

23 

24 

27 

15 

5.8

5.3 

12 

16 

15 

15

15 

15 

14 

15 

15

Secondroot-days

353.2 

314.9 

25).. 7

3,592.6

378.0 

140.2 

320.0 

455.1 

424.9 

333.0 

297.6 

306.1 

276.3

3,851.0

May

15 

15 

16 

16 

18

18 

18 

18 

18 

18

16 

17 

17 

16 

16

16 

15 

13 

0 

1.0

9.9 13 

12 

11 

8.6

12 

15 

14 

12 

9.4 

9.0

Maximum

18 

18 

13

21

18 

12 

34 

27 

18 

17 

12 

12 

11

34

June

5.5 

8.8 

5.0 

2.7 

0

10 

17 

17 

17 

17

16 

16 

13 

12 

12

12 

12 

12 

12 

12

11 

11 

11 

11 

10

10 

1Q 

10 

10 

10

July

10 

10 

9.9 

9.7 

9.4

9.3 

8.9 

8.8 

8.5 

8.5

8.6 

8.6 

8.5 

8.3 

8.6

8.5 

8.6 

9.4 

10 

9.9

9.9 

9.6 

9.7 

9.9 

11

12 

12 

11 

11 

10 

9.5

Minimum

9 '.Z 2 

.1

.1

.6 

.5 

1.0 

5.3 

0 

0 

8.3 

7.3 

8.5

0

Aug.

9.0 

8.8 

8.8 

9.6 

8.8

S.8 

8.9 

9.0 

7.3

11

11 

12 

11 

11 

11

11 

10 

11 

11 

11

11 

10 

9.9 

9.9 

9.8

9.6 

9.3 

9.2 

9.1 

9.1 

9.2

Mean

11.4 

10.5 

8.12

9.82

12.2 

5.01 

10.3 

15.2 

13.7 

11.1 

9.60 

9.87 

9.21

10.6

Sept.

9.5 

9.4 

9.1 

9.0

8.9

8.8 

8.8 

8.6 

8.5 

8.5

8.5 

8.6 

8.6 

8.8 

8.8

8.8 

8.8 

8.8 

8.7 

9.1

11 

11 

11 

9.6 

9.2

9.1 

9.1 

9.2 

9.5

11

Run-off In 

acre-feet

701 

625 

499

7,130

750 

278 

635 

905 

B43 

660 

590 

607 

548

7,640
SULPHUR SPRING VALLEY 

WHITEWATER DRAW BASIN

305

Whltewater Draw near Douglas, Arlz.

Location.- Water-stage recorder, lat. 31°21'15", long. 109°35'00", In SWiSEi sec. 10, T. 

2A s., R. 27 E., at bridge on U. S. Highway 80, ll miles upstream'from International 

boundary and 2 miles west of Douglas. Datura of gage is 3,887.6 feet above mean sea 

level (Arizona Highway Department bench mark).

Drainage area.- 1,023 square miles.

Records available.- August 1911 to April 1922, June 1930 to December 1933, May 1935 to 

September 1941.

Extremes.- Maximum dlscharge during year, 2,750 second-feet Sept. 29 (gage-height, 10.27 

feet); minimum, 0.2 second-foot July 1.

1930-41: Maximum discharge, 3,450 second-feet Aug. 10, 1931 (gage height, 12.15 

feet); minimum, 0.1 second-foot May 26, June 9, 1937, July 11, 1939. 

Maximum discharge known, 4,050 second-feet (estimated) July 27, 1919.

Remarks.- Records good except those above 500 second-feet, which are fair, 

above station for irrigation.

Diversions

Discharge, In second-feet, water year October 1940 to September 1941

Day

1 

2 

5 

4

e

6 

7 

S 

9 

10

11 

12 

13 

14 

15

16 

17 

IS 

19 

20

31 

22 

23 

24 

35

26 

87 

28 

29 

30 

31

Oct.

1 

1 

.9 

.9 

.9

.9 

1 

.9 

.8 

.8

.9 

.9 

.9 

.8 

.9

.9 

.9 

.9 

.9 

.9

.9 

.9 

.9 

.8 

.8

.8 

.8 

.8 

.8 

.9 

.8

Jtov.

0.8 

.8 

.8 

.7 

.7

.7 

.8 

.8 

.8 

.8

.8 -.9 

1

1 

1

1 

1 

1 

9 

9

9 

9 

9 

8 

8

8 

8 

8 

8 

8

Dec.

0 8 

8 

8 

8

e

8 

8 

8 

8 

8

8 

8 

8 

8 

8

8 

9 

9

1 

1

1 

1 

1 

1 

.9

.8 

.8 

.8 

.8 

.7 

.7

Jan.

0.6 

.7 

.6 

.6 

.6

.6 

.7 

.7 

.8 

.8

.9 

1 

.8 

.7 

.7

.8 

.8 

.7 

.6 

.6

.6 

.6 

.6 

.6 

.6

.6 

.6 

.8 

.6 

.6 

.6

Fell.

0.6 

.6 

.6 

.6 

.7

.6 

4 

S 

.8 

.5

.4 

.3 

.3 

.3 

.3

.3 

.3 

.3 

.3 

.4

.4 

.6 

9 

2 

.9

.8 

.8 

.8

Month

Oet 

NOT 

Dec

C

Jar 

Fel 

Mai

Api 

Ma3 

Jui 

Ju3 

Auj 

Sei

1

alendar year 194 3 ......................

fater year 1940-

liar.

0.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.8

.8 

.8 

.8 

.8 

.8

1 

.8 

.8 

.8 

.8

.8 

.9 

.8 

.6 

.6

.6 

.6 

.6 

.5 

.5 

.6

Apr.

0.7 

.6 

.5 

.5 

.5

.5 

.4 

.4 

.4

.4

.3 

.5 

.5 

.3 

.3

.4 

.3 

.3 

.4 

.4

.4 

.4 

.3 

.3 

.3

.4 

.4 

.3 

.3 

.3

Seoondfoot-daya

27.2 

25.5 

26.1

3,035.6

21.1 

29.5 

23.3 

18.0 

34.5 

13.5 

953.7 

228.3 

1,596.9

2,9315,6

May

0.4 

12 

2 

.8 

.7

.7 

.7 

.7 

.7 

.7

.7 

.7 

.6 

.7 

.7

.7 

.8

.e

.8 

.8

.8 

.8 

,.8 

.8 

.8

.8 

.6 

.6 

.5 

.6 

.7

Maximum

1 

1 

1

511

1 

9 

1 

.7 

12 

.6 

444 

51 

889

869

June

0.6 

.6 

.5 

.5

.5

.5 

.5

.5 

.5 

.4

.4 

.4 

.4 

.4 

.4

.5 

.4 

.4 

.4 

.4

.4 

.5 

.5 

.4 

.4

.5 

.4 

.4 

.4 

.4

July

0.3 

.3 

.3 

.3 

.3

.4 

.5 

.3 

.3 

.4

.4 

.5 

5 

1 

10

29 

40 

23 

37 

444

33 

46 

219 

41 

2

2 

13 

2 

1 

.7 

.7

Minimum

0.8 

.7 

.7

.4

.6 

.3 

.5 

.3 

.4 

.4 

.3 

.7 

.6

.3

Aug.

0.8 

.8 

2 

1 

2

7 

2 

1 

1 

1

1 

.7 

1 

7 

2

1 

27 

51 

23 

2

30 

25 

15 

8 

2

1 

1 

1 

2 

2 

1

Mean

0.88 

.85 

.84

8.29

.68 

1.05 

.75 

.40 

1.11 

.45 

30.8 

7.17 

53.2

8.18

Sept.

10 

2 

1 

.6 

.«

3

164 

94 

7 

2

2 

1 

2 

12 

Z

1 

1 

1 

1 

.8

.7 

.7 

.7 

.7 

.7

.7 

.7 

291 

869 

104

Run-off In 

acre-feet

54 

51 

52

6,020

42 

59 

46 

24 

68 

27 

1,890 

441 

3,170

5,980

Peak discharge.- July 20 (10:30 a.m.) 1,460 sec.-ft.; Sept. 29 (2:15 a.m.) 2,750 seo.-ft.
306 MISCELLANEOUS DISCHARGE MEASUREMENTS

In addition to the records of stream flow obtained at gaging stations In the Colorado 

River Basin and reported In the preceding pages, measurements of flow were made at other 

points, Indicated In the following table:

Miscellaneous discharge measurements In Colorado River Basin during water year 

October 1940 to September 1941

Tributaries above Sreen River

Date

Sept. 20 

20 

20

Stream

Rifle Creek......

Tributary to or 

diverting fromColorado River. ....

Rifle Creek........

Locality

Sec. 1, T. 5 S., R. 93 W., 

stream from Middle Fork,] 

Colo.

stream from East Fork,ne 

Colo. 

Sec. 1, T. 5 S., R. 93 W. , 

near Rifle, Colo.

Just uplear Rifle,

Just upir Rifle,

at mouth.

Discharge 

(sec. -ft.)

0.5 

6.8 

6.0

Little Colorado River Basin

Nov. 16

May 3

Jan. 7

Lyman canal ......

Woodruff canal . . .

Little Colorado 

River.

Silver Creek. ......

Lyman Dam outlet 300 feet below 

Lyman Dam, Arle.

Nffi sec. 32, T. 16 N. , R. 22 E., 250 

feet below diversion dam that Is 

control for station on Sliver 

Creek near Woodruff, Arlz.

1S.S

30.4

37.4

3.03

.66

S.88

Glla River Basin

Oct. 9

liar. 11

n~\

Oct. 15

no

net

28

July 14

Sept. 8

Glla River.......

Warm Springs. . . . .

San Pedro canal. .

Cooperative 

canal .

....do. ..........

Colorado River.....

Glla River.........

San Fedro River....

....do. ............

W& sec. 21, T. 19 S., R. 20 W., above 

heading of Sunset canal, 13 miles 

east of Dunoan, Arlz.

SWi sec. 17, T. 3 S., R. 18 E., 1,700 

feet downstream from Coolldge Dam, 

Arlz.

SWi sec. 23, T. 5 S., R. 15 E.. at 

mouth of San Fedro, 1 mile west of 

Wlnkelman, Arlz.

about 200 feet below diversion dam ' 

that Is control for station on Glla 

River near Laveen, Arlz.

....do...............................

77.3

.97 

2.12

.41 

.5

7.25

7 AS

6.81

13.3
INDEX

Accuracy of field data and computed

result s..........................

Acre-foot, definition of...............

Adamana, Arlz., Puerco River near'......

Agencies other than Geological Survey, 

records collected by.............

Agua Fria River at Lake Pleasant Dam,

Ariz.............................

near Mayer, Ariz.....................

Alamo, Arlz., Santa Maria River near...

Williams River near..................

All-American canal above Pilot Knob

wasteway, Calif..................

below Pilot Knob wasteway, Calif.....

near Imperial Dam, Calif.............

Almont, Colo*, East River at...........

Taylor River at......................

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

at Parmington, K. Hex................

at Howardsville, Colo................

near Cedar Hill, N. Hex..............

Anthracite Creek near Ploresta, Colo... 

Arapaho Creek below Monarch Lake, Colo. 

Aravaipa Creek near Feldman, Arlz......

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

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

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

Bardine, Colo., East Muddy Creek near.. 

Bartlett Reservoir at Bartlett Dam,

Ariz.............................

Bayfleld, Colo., Los Pinos River near.. 

Valleclto Reservoir near.............

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

Blcknell, Utah, Premont River near.....

Big Creek below Bonham Reservoir, near 

Collbran, Colo...................

Big Plney, Wyo., Middle Plney Creek

near.............................

South Piney Creek near...............

Big Sandy, Wyo., Big Sandy Creek near.. 

Bast Fork near.......................

Silver Creek near....................

Big Sandy Creek at Leckie Ranch, near

Big Sandy, Wyo...................

Blacks Fork near Mlllburne, Wyo........

near Urie, Wyo.......................

Blanco, N- Hex., San Juan River near... 

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

below Green Mountain Reservoir, near 

Kremmllng, Colo..................

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

Blythe, Calif., Palo Verde canal near.. 

Boulder, Wyo., Boulder Creek near......

New Fork near........................

Boulder Creek below Boulder Lake, near 

Boulder, Wyo.....................

Boulder Dam, Ariz.-Nov., Colorado River 

below............................

Lake Head at.........................

Bright Angel Creek near Grand Canyon,

Arlz.............................

Bright Angel Creek Basin, Ariz.,

gaging-station records in........

Bull Creek near Molina, Colo...........

Burnt Pork at Burntfork, Wyo...........

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

near Heiberger, Colo.................

Page

3-4

1

221

298

232

230

32

33

31

80

76

195

197

194

196

93

37

271

151

61

83

91

293

192

191

113

170

130

131

135

116

117

135

137

138

174

57

58

177

236

128

120

128

22

21

226

72

143

70

69

Calva, Ariz., Gila River at............ 246

Cameo, Colo., Colorado River near...... 17

Plateau Creek near................... 68

Camp Verde, Ariz., Verde River near.... 290

Cave Creek, Ariz., Verde River near.... 292

Cebolla Creek at Powderhorn, Colo...... 88

Cedar, Colo., Disappointment Creek

near............................107,108

Cedar Hill, N. Hex., Anlinas River near. 196 

Cedaredge, Colo., Leroux Creek near...'. 94

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

Surface Creek near ..................

Cement Creek near Crested Butte, Cole. 

Charleston, Ariz., San Pedro River at. 

Cherry Creek near Red Keaa, Colo.

Page 

97 

96 

82 

268 

205 

Chevelon Fork near Wlnslow, Ariz....... 222

Chromo, Colo., Little Navajo River at.. 185 

Navaj o River near .................... 183

Chrysotile, Arlz., Salt River near. .... 284

Cisco, Utah, Colorado River near....... 18

Clark, Colo., Elk River at ............. 146

Clear Creek near Winslow, Ariz.. ....... 223

Clifton, Ariz., Gila River near. ....... 242

San Francisco River at ............... 263

Cochetopa Creek near Parlin, Colo...." 8V

Collbran, Colo., Big Creek near. ....... 71

Buzzard Creek near ................... 70

Plat eau Creek near ................... 67

Colona, Colo., TJhcompahgre River at.... 98

Colorado River aqueduct near Parker

Dam, Arlz. -Calif ................. 234

Colorado River at Bright Angel Creek,

near Grand Canyon, Arlz .......... 20

at Glenwood Springs, Colo ............ 16

at Hot Sulphur Springs, Colo. ........ 14

at Lees Perry, Ariz. ............ .19, pl.l,A

at Needles, Calif .................... 25

at Yuma, Ariz ........................ 30

below Boulder Dam, Ariz . -Nev ......... 22

below Parker Dam, Ariz. -Calif ........ 28

near Cameo, Colo ..................... 17

near Cisco, Utah. .................... 18

near Dotsero, Colo. .................. 15

near Granby, Colo ..........>.......... 13

near Grand Lake, Colo ................ 12

near Pica oho, Calif .................. 29

near Topock, Ariz .................... 24-26

Colorado River Indian Reservation,

diversion for, near Parker, Arlz. 235 

Computations, accuracy of results of... 3-4 

Congress, Ariz., Date Creek near....... 233

Continental, Ariz., Santa Cruz River at 275 

Control, definition of ................. 1

Coolidge Dam, Ariz., Gila River below.. 248 

San Carlos Reservoir at .............. 247

Coon Creek near Mesa, Colo. ............ 73

Cooperation, record of ................. 10

Cora, Wyo., Duck Creek at .............. 124

Lake Creek near. ..................... 123

New Fork near ........................ 118

Willow Creek near .................. .121-122

Cornville, Arlz., Oak Creek near....... 296

Cortez, Colo., HoElmo Creek near....... 210

Cottonwood Creek (directly tributary to

Green River) near Daniel, Wyo.... 115

Cottonwood Creek (directly tributary to 

San Rafael River) near Orangevllle, Utah. ..................... .168

Crawford, Colo., Smith Fork near ....... 90

Crested Butte, Colo-, Cement Creek near 82 

East River near ...................... 79

Slate River near ..................... SI

Crystal River near Redstone , Colo ...... 63

Currant Creek near Fruitland, Utah. .... 158

Daniel, Wyo., Beaver Creek near........ 113

Cottonwood Creek near. ............... 115

Green River near ..................... 110

Horse Creek near ..................... 114

Data, accuracy of ...................... 3-4

explanation of ....................... 1-3

Date Creek near Congress, Arlz. ........ 233

Delta, Colo., Roiibldeau Creek near .... 100, 101

99 

57

59

60

tTncompahgre River at. 

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

Snake River at......................

Tenmlle Creek at....................

Disappointment Creek at upper station, 

near Cedar, Colo................

307
308 INDEX

Disappointment Creek near Cedar, Colo.. 

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

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

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

at Gateway, Colo.....................

near MePhee, Colo....................

West Fork of, near Stoner, Colo......

Dome, Aria., alia River near...........

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

Douglas, Arlz., Whitewater Draw near... 

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

Strawberry River at..................

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

at Myton, Utah.......................

at Provo River Trail, near Hanna,

Utah.............................

near Tablona, Utah...................

Duck Creek at Cora, Wyo................

Duncan Valley, N. Hex.-Aria., diversions from Oila River in: ........

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

Florida River near...................

Lightner Creek near..................

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

East Hancos River near Mancos, Colo....

East Muddy Creek near Bardine, Colo....

Bast River at Almont, Colo.............

near Crested Butte, Colo.............

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

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

Elkhorn; Wyo., Little Sandy Creek near. 

Enterprise canal at aillesple Dam,

Arlz.............................

Fall Creek near Plnedale, Wyo..........

Farmlngton, H. Hex., Animas River at...

la Plata River near..................

San Juan River at....................

Aravalpa Creek near....

Page 

108 

147 

103 

103 

105 

104 

106 

254 

15 

305 

154 

157

154

155

152

153

124

241

196

201

200

116

208

91

80

79

184

146

136

304

127

197

204

175

271

9

Feldman, Arlz., A-mmiptL u: 

Floods, special reports on 

Florence, Arlz., Florence-Casa Grande

canal near....................... 272

Qlla River near...................... 250

Florence Junction, Arlz., Queen Creek

near............................. 273

Florence-Casa Grande canal near

Florence, Arlz................... 272

Floresta, Colo., Anthracite Creek near. 93 

Florida River near Durango, Colo....... 201

Fontenelle Creek near Fontenelle, Wyo.. 134 

Praser, Colo., Middle Fork of Ranch

Creek near....................... 47

North Fork of Ranch Creek near....... 46

Ranch Creek near..................... 43,44

St. Louis Creek near................. 42

Praser River at Cranby, Colo........... 40

near Winter Park, Colo............... 39

Fremont River below Fish Lake, near

Fremont, Utah.................... 169

near Bicknell, Utah.................. 170

Fremont River Basin, Utah, gagingstatlon records In..............169-170

Prultland, Utah, Currant Creek near* -. 158

Oallup, H. Hex., Puerco River at....... 220

Oateview, Colo., Lake Fork at.......... 89

Gateway, Colo., Dolores River at....... 105

alia, H. Hex., alia River near......... 237

alia River at Ashurst-Hayden Dam, near

Florence, Arlz................... 250

at Calva, Ariz....................... 246

at Kelvin, Arlz...................... 249

at Hew Mexico-Arizona State line,

near Vlrden, N. Hex.............. 240

below Blue Creek, near Vlrden, H.

Hex.............................. 239

below Coolidge Dam, Ariz............. 248

below aillesple Dam, Ariz.-.........252-253

discharge measurements of............ 306

diversions from, in Duncan Valley,

H. Hex.-Ariz..................... 241

in Safford Valley, Arlz............ 245

near Clifton, Ariz................... 242

near Dome, Ariz...................... 254

near Gila, H. Hex.................... 237

near Laveen, Ariz.................... 251

near Red Rock, N. Hex................ 258

near Solomonsville, Ariz............243-244

Page 

alia River Basin, Arlz., discharge

measurements in.................. 306

gaging-station records In...........237-304

aillesple canal at alllespie Dam, Arlz. 303 

aillesple Dam, Arlz., Enterprise canal

at............................... 304

Oila River below....................252-253

Oillespie canal at................... 303

Olenwood, N. Hex., San Francisco River

near. ............................. 262

Olenwood Springs, Colo., Colorado River

at.

Roaring Fork at...................... 62

Oranby, Colo., Colorado River near..... 13

Fraser River at...................... 40

Strawberry Creek near................ 60

Willow Creek near. .................. 88

Grand Canyon, Arlz., Bright Angel Creek

near............................. 226

Colorado River near.................. 20

Grand Falls, Arlz., Little Colorado

River at......................... 218

Grand Junction, Colo., Ounnlson River

near............................. 78

Grand Lake, Colo., Colorado River near. 12 

Grand Mesa, Colo., Surface Creek near.. 95 

Granite Creek near Prescott, Arlz...... 295

Granite Reef Dam, Arlz., diversions

from Salt River at............... 297

Green River at Green River, Utah....... 112

at Warren Bridge, near Daniel, Wyo... 110 

near Linwood, Utah................... Ill

Oreen River Basin, Wyo.-Utah-Colo.,

gaging-station records in.......110-168

Ounnison, Colo., Tomlchi Creek at...... 85

aunnlson River at lola, Colo........... 77

near Orand Junction, Colo............ 78

North Fork of, near Somerset, Colo... 92

Hanna, Utah, Duchesne River near....... 152

Hasaayampa River near Morristonn, Ariz. 302 

near Wagoner, Ariz................... 301

Heiberger, Colo., Buzzard Creek near... 69 

Heiner, Utah, Price River near......... 166

Henrys Fork at Linwood, Utah........... 142

Hermosa Creek near Hermosa, Colo....... 199

Hesperus, Colo., La Plata River at..... 202

Horse Creek near Daniel, Wyo........... 114

Hot Sulphur Springs, Colo., Colorado

River at......................... 14

Howardsville, Colo., Animas River at... 194 

Hunt, Ariz., Little Colorado River

near............................215,216

Huntington Creek near Huntington, Utah. 167

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

Imperial Dam, Calif., All-American

canal near.......................

Indian Service cooperative canal,

Ariz., discharge measurements of. 

lola, Colo., aunnlson River at.........

Kahnah Creek near Whitewater, Colo.....

Kelvin, Ariz., alia River at...........

Kremmllng, Colo., Blue River near......

Muddy Creek near.....................

la Plata River at Colorado-Hew Mexico 

State line......................

at Hesperus, Colo...................

near Parmington, H. Mex.............

Labarge Creek near Labarge Meadows

ranger station, Wyo.............

near Viola, Wyo.....................

Labarge Meadows ranger station, Wyo., 

Labarge Creek near..............

Lake Creek near Cora, Wyo.............

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

lake Havasu near Parker Dam, Ariz 

Calif...........................

Lake Mead at Boulder Dam, Ariz.-Hev... 

Lake Pleasant at Lake Plsasant Dam,

Arlz............................

Lake Pleasant Dam, Ariz., Ague Fria

River at........................

Lake Pleasant at....................

Laveen, Arlz., Oila River near........

Santa Cruz River near...............

Leal, Colo., Williams River near...^..

193

306

77

102

249

58

56

203

202

204

132

133

132

123

89

300

299

300

251

278

52
INDEX 309

Page 

Lees Perry, Ariz., Colorado Hirer

at .......................... .19, pi .1.A

Paria River at ....................... 2lT

Iieroux Creek near Cedaredge, Colo...... 94

Lightner Creek near Durango, Colo ...... 200

Lily, Colo., Little Snake River near... 148 

Llnnood, Utah, Green River near. ....... Ill

Henrys Fork at ....................... 142

Little Colorado River above Lyman

Reservoir, near St. Johns, Ariz.. 212 

above Zunl River, near Bunt, Arlz.... 215

at Orand Falls, Arlz . ................ 218

below Lyman Reservoir near St . Johns,

Ariz ............................. 214

near Hunt, Arlz. ..................... 216

near Woodruff, Arlz ................... 217

Little Colorado River Basin, Arlz.,

discharge measurements In........ 306

gaglng-statlon records In. ......... .212-225

Little Navajo River at Chromo, Colo. 

Little Sandy Creek near Elkhorn, Wyo. 

Little Snake River near Dlxon, Wyo...

near Lily, Colo ....................

Llttlefleld, Arlz., Virgin River at.. 

Los Pinos River at Ignaoio, Colo.....

below Snowslide Canyon, near 

Werainuche Pass, Colo.

186

136

147

148

228

193

190 

near Bayfleld, Colo. . ................ 192

Lyaan canal, Arlz., discharge measurements of ......................... 306

Lyman Reservoir near St. Johns, Arlz... 213

McDowell, Arlz., diversion from Verde

River at. ........................

Verde River near.. ....................

HcElmo Creek near Cortez, Colo. ........

McPhae, Colo., Dolores River near......

Mammoth, Arlz., San Pedro River near...

Hancos, Colo., East fiances River near..

Kiddle Hancos River near .............

West Hancos River near. ..............

fiances River near Towaoe, Colo. ........

Mason, Wyo., North Plney Creek near....

Haybell, Colo., Tampa River near .......

Mayor, Arlz., Agua Frla River near.....

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

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

Mesa, Colo., Coon Creek near. ..........

Middle Fork, Colo., discharge measurement of ..... .- ...................

Middle Mancos River near Hancos, Colo.. 

Middle Plney Creek below South Fork,

near Big Plney, Wyo. .............

Hillbume, Wyo., Blacks Fork near......

Mineral Creek near Sllverton, Colo.....

Moddle canal at New Mexico-Arizona

State line, near Vlrden, N. Hex.. 

near Vlrden, N. Hex. .................

Moenkopl Wash near Tuba, Arlz. .........

Mollna, Colo., Bull Creek near. ........

Monarch Lake, Colo., Arapaho Creek

below. ...........................

Horrlstown, Arlz., Hassayampa River

near. ............................

Mountain Home, Utah, Rock Creek near... 

Muddy Creek near Kremmling, Colo .......

Myton, Utah, Duehesne River at .........

Haturita, Colo., San Mlguel River at...

Navajo River at Banded Peak Ranch, near

Chromo, Colo .....................

at Edith, Colo.......................

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

Heola, Utah, TTinta River near. .........

New Fork below New Fork Lake, near

Cora, Wyo.. ......................

near Boulder, Wyo ....................

near Pinedale, Wyo ...................

Ho gales, Arlz., Santa Cruz River near.. 

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

Oak Creek near Cornville, Arlz .........

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

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

Orangevllle, Utah, Cottonwood Creek

near. ............................

297

294

210

104

269

208

209

206

207

129

145

298

49

161

73

306

209

130

137

198

259 

2S8 

225

302

156

56

155

183

134

23

159

118

120

119

274

129

296

86

83

Pagosa Springs, Colo., Piedra River 

near .......................... 186

Rio Blanc o near.

Page 

Pagosa Springs, Colo 181

Rito Blanco near. .................... '132

San Juan River at .................... 172

San Juan River near. .................. 171

Turkey Creek near. ................... 180

Weminuche Creek near. ................ 189

West Fork of San Juan River near. .. .178,179

. 188 

. 236 

. 267 

. 283 

 211

Williams Creek near. 

Palo Verde canal near Blythe, Calif... 

Palomlnas, Arlz., San Pedro River at.. 

Pant an o Wash near Tucson, Ariz ........

Paria River at Lees Ferry, ArlzParia River Basin, Arlz., gagingstation record in* ..............

Parker, Arlz-, diversion for Colorado

River Indian Reservation near-.. 

Parker Dam, Arlz. -Calif ., Colorado

River aqueduct near .............

Colorado River below.

211

334 

28

Lake Havasu near ..................... 26-87

Parlln, Colo., Cochetopa Creek near.... 87

Parshall, Colo., Williams River near... 53 

Patagonia, Ariz., Sonolta Creek near... 279 

Peridot, Arlz., San Carlos River near.. 266 

Pioacho, Calif., Colorado River near... 29 

Piceance Creek near Rio Blanco, Colo... 163 

Piedra, Colo., Piedra River near. ...... 187

Piedra River at Bridge ranger station,

near Pagosa Springs, Colo........ 186

near Piedra, Colo . ................... 187

Pilot Knob wasteway, Calif., AilAmerican canal above ........

All -American canal below.. ......

Pine, Ariz., Verde River near.....

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

Pine River. See Los Pinos River. 

Pinedale, Wyo., Fall Creek near...

New Fork near. ..................

Pine Creek at. ..................

Pole Creek near.

33

291

125

127

119

125

126

Planet, Ariz., Williams River at,.231, pl.l.B 

Plateau Creek near Cameo, Colo......... 69

near Collbran, Colo.................. 67

Pole Creek below Little Half Moon Lake,

near Pinedale, Wyo............... 126

Powderhorn, Colo., Cebolla Creek at.... 88

Prescott, Arlz., Granite Creek near.... 295

Price River above Scofleld Reservoir,

near Scofield, Utah.............. 164

near Heiner, Utah.................... 166

near Scofield, Utah.................. 166

Publications on stream flow by

Geological Survey................ 4-7,9

by State agencies.................... 8

Puerco River at Gallup, N. Hex......... 220

near Adamana, Arlz................... 221

Quartz Creek near Ohio, Colo........... 86

Queen Creek near Florence Junction,

Arlz............................. 273

Ranch Creek above forks, near Eraser,

Colo.............................

Middle Fork of, near Fraser, Colo....

near Fraser, Colo....................

near Tabernash, Colo.................

North Fork of, near Fraser, Colo.....

South Fork of, near Winter Park,

Colo.............................

Raven, Colo., West Divide Creek near... 

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

Red Rock, N. Hex., Gila River near.....

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

Rifle, Colo., East Fork of Rifle Creek 

near ...........................

Rifle Creek near.....................

Rifle Creek, Colo., discharge measurements of.........................

East Fork of, near Rifle, Colo.......

near Rifle, Colo.....................

Rllllto, Arlz., Santa Cruz River at....

Rillito Creek near Tucson, Arlz........

near Wrlghtstown, Arlz...............

Rio Blanco, Colo., Piceance Creek near. 

Rio Blanco near Pagosa Springs, Colo... 

Rito Blanco near Pagosa Springs, Colo.. 

Roaring Fork at Aspen, Colo............

at alenwood Springs, Colo............

Robertson, Wyo., East Fork of Smith

Fork near........................

45

47

44

45

46

48

64

205

238

63

306

66

65

277

281

280

163

181

182

61

ee
310 INDEX

Page 

Robertson, Wyo., West Pork of Smith

Pork near.......................140-141

Rook Creek near Mountain Home, Utah.. . 156 

Roosevelt, Arlz., Salt River near...... 285

Tonto Creek near....................288,289

Rosa, N. Hex., San Juan River at....... 173

Roubideau Creek at mouth, near Delta,

Colo............................. 101

near Delta, Colo. ................... 100

Runoff in Inches, definition of........ 1

Sabino Creek near Tuoson, Ariz......... 282

Safford Valley, Ariz., diversions from

Glla River In.................... 245

St. Johns, Arlz., Little Colorado River

near............................212,214

Lyman Reservoir near-................ 213

St. Louis Creek near Fraser, Colo...... 42

Salt Creek near Wlnslow, Ariz.......... 224

Salt River at Stewart Mountain Dam,

Arlz............................. 287

diversions from, at Granite Reef Dam,

Ariz............................. 297

reservoirs on........................ 286

near Chrysotlie, Ariz................ 284

near Roosevelt, Arlz................. 285

San Carlos Reservoir at Coolldge Dam,

Arlz............................. 247

San Carlos River near Peridot, Arlz.... 266

San Francisco River at Clifton, Arlz... 263 

near Glenvraod, H. Hex................ 262

San Juan River at Parmlngton, H- Hex... 175 

at Fagosa Springs, Colo.............. 172

at Rosa, N. Hex...................... 173

at Ship Rook, N. Hex................. 176

near Blanco, H. Mex.................. 174

near Bluff, Utah..................... 177

near Pagosa Springs, Colo............ 171

West Pork of, above Borns Lake, near

Pagosa Springs, Colo............. 178

near Pagosa Springs, Colo.......... 179

San Juan River Basin, Colo.-H. Hex.- 

Utah., gaging-statlon records 

In..............................171-210

San Mlguel River at Naturlta, Colo..... 109

San Pedro canal, Arlz., discharge

measurements of.................. 306

San Pedro River at Charleston, Arlz.... 268

at Palominas, Arlz................... 267

at Wlnkelman, Arlz................... 270

near Mammoth, Arlz................... 269

San Simon Creek near San Simon, Ariz... 264 

near Solomonsvllle, Ariz............. 265

Santa Cruz River at Continental, Ariz.. 275 

at Rllllto, Ariz..................... 277

at Tuoson, Ariz...................... 276

near Laveen, Ariz.................... 278

near Nogales, Aria................... 274

Santa Maria River near Alamo, Arlz..... 232

Sargents, Colo., Tomlchl Creek at...... 84

Savery Creek at upper station, near

Savery, Wyo...................... 149

Scofleld, Utah, Price River near......164,165

Second-feet per square mile, definition

of............................... 1

Second-foot, definition of............... 1

Second-foot-day, definition of......... 1

Ship Rock, H. Mex., San Juan River at.. 176 

Shrlver canal at Vlrden, N. Hex........ 260

Silver Creek (Green River Basin) near

Big Sandy, Wyo................... 117

Silver Creek (San Juan River Basin)

near Woodruff, Arlz.............. 219

Silverton, Colo., Mineral Creek near... 198 

Slate River near Crested Butte, Colo... 81 

Slater Pork near Slater, Colo.......... 150

Smith Pork (Green River Basin), East

Pork of, near Robertson, Wyo..... 139

West Fork of, near Robertson, Wyo...140-141 

Smith Fork (Gunnlson River Basin) near

Crawford, Colo................... 90

Snake River at Dillon, Colo............ 59

Solomonsvllle, Arlz., Gila River near.245-244 

San Simon Creek near................. 265

Somerset, Colo., North Pork of Gunnlson

River near....................... 92

Sonolta Creek near Patagonia, Arlz. ... 279

South Plney Creek near Big Piney, Wyo.. 131

Sprlngdale, Utah, North Fork of Virgin

River near.......................

Stage-discharge relation, definition of 

Steamboat Springs, Colo., Yampa River

at...............................

Steelman Creek, Colo., Williams River

below............................

Stewart Mountain Dam, Arlz., Salt River

at...............................

Stoner, Colo., West Pork of Dolores

River near.......................

Strawberry Creek near Granby, Colo.....

Strawberry River at Duchesne, Utah.....

Sulphur Spring Valley, Arlz., gagingstation record In................

Sunset canal above Hew Mexico-Arizona

State line, near Virden, N. Hex.. 

near Vlrden, N. Hex..................

Sunset canal wasteway near Virden,

N. Hex...........................

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

below Park Reservoir, near Grand

Mesa, Colo.......................

near Cedaredge, Colo.................

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

Ranch Creek near.....................

Tablona, Utah, Duohesne River near.---. 

Taylor Park Reservoir, Colo., Taylor

River below......................

Taylor Park Reservoir at Taylor Park,

Colo.............................

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

below Taylor Park Reservoir, Colo....

Tenmlle Creek at Dillon, Colo..........

Terms, definition of...................

Tomlchl Creek at Gunnlson, Colo........

at Sargents, Colo....................

Tonto Creek above Gun Creek, near

Roosevelt, Arlz..................

near Roosevelt, Ariz.................

Topock, Arlz., Colorado River near.-... 

Towaoo, Colo., Mancos River near. 

Troublesome, Colo., East Pork of

Troublesome Creek near*..........

Troublesome Creek near...............

Troublesome Creek at Atmore Ranch, near 

Troublesome, Colo................

East Fork of, near Troublesome, Colo. 

Tuba, Ariz., Moenkopl Wash near........

Tucson, Ariz., Pantano Wash near.......

Rlllito Creek near ..................

Sabino Creek near....................

Santa Cruz River at..................

Turkey Creek near Pagosa Springs, Colo.

TJlnta River near Neola, Utah......

Ohoompahgre River at Colons, Colo. 

TJrle, Wyo., Blacks Pork near-. .

Page

229

1

144

51

287

106

50

157

256

255

257

97

95

96

49

45

153

74

76

75

60

1

85

84

288

289

24-25

207

55

54

54

55

225

, 283

281

282

276

180

159

' 98

138

Vallecito Reservoir near Bayfleld,

Colo............................. 191

Valley canal near Vlrden, H- Hex. .. 261 

Vasquez Creek near Winter Park, Colo... 41 

Verde River above Bartlett Reservoir,

near Cave Creek, Arlz............ 292

above Camp Creek, near MoDowell,

Arlz............................. 294

below East Verde River, near Pine,

Ariz............................. 291

diversion from, for city of Phoenix,

at MoDowell, Ariz................ 297

near Camp Verde, Ariz.............'... 290

Vernal, Utah, Ashley Creek near........ 151

Viola, Wyo., Labarge Creek near........ 133

Vlrden, N. Hex., Gila.River near......239,240

Moddle canal near....... ...........258,259

Shrlver canal at..................... 260

Sunset canal near...................255,286

Sunset canal wasteway near........... 257

Valley canal near.................... 261

Virgin, Utah, Virgin River at.......... 227

Virgin River at Llttlefield, Arlz...... 228

at Virgin, Utah-..................... 227

North Pork of, near Springdale, Utah. 229 

Virgin River Basin, Utah-Ariz., gagingstation records In..............227-229
INDEX 311

Page

Wagoner, Arlz., Hasaayampa River near.. 301 

Warm Springs, Arlz., discharge measurements of......................... 306

Watson, Utah, White River near......... 162

Weminuche Creek near Bridge ranger station, near Pagosa Springs, Colo. 189 

Wemlnuche Pass, Colo., Los Pinos River

near............................. 190

West Divide Creek below Willow Creek,

near* Raven, Colo................. 64

West Hancos River near Mancos, Colo.... 206

White River near Meeker, Colo.......... 161

near Watson, Utah.................... 162

Whlterocks River near Whlterooks, Utah. 160 

Whltewater, Colo., Eahnah Creek near... 102 

Whltewater Draw near Douglas, Arlz..... .305

Whltewater Draw Basin, Arlz., gagingstation record In................. 305

Williams Creek near Bridge ranger 

station, near Fagosa Springs, 

Colo............................. IBS

Williams River (Arizona) at Planet,

Ariz........................231, pl.l,B

near Alamo, Ariz..................... 23CT

Williams River Basin, Ariz., gagingstatlon records in..............230-233

Williams River (Colorado) below Steelman Creek, Colo.................. 51

near Leal, Colo...................... 52

near Parshall, Colo.................. S3

Willow Creek (directly tributary to 

Colorado River) near Sranby, 

Colo............................. 38

Page 

Willdw Creek (Green River Basin) near

Cora, Wyo.......................121-122

Winkelman, Ariz., San Pedro River at... 270

Winslow, Ariz., Chevelon Fork near-...- 222

Clear Creek near..................... 223

Salt Creek near...................... 824

Winter Park,.Colo , Praser River near.. 39 

South Pork"of Ranch Creek near....... 48

Vasquez Creek near................... 41

Woodruff, Ariz., Little Colorado River

near............................. 217

Silver Creek near.................... 219

Woodruff canal, Arlz., discharge

measurements of.................. 306

Work, division of...................... 10-11

scope of........ ....... . 1

Wrightstown, Ariz., Rlllito Creek near- 880

Yampa River at Steamboat Springs, Colo. 144 

near Maybell, Colo................... 146

Yuma, Ariz , Colorado River at......... SO

Yuma main canal at................... 35

Yuma main canal near-................ 34

Yuma main canal wasteway at.......... 36

Yuma main canal at siphon-drop power

plant, near Yuma, Arlz........... 34

below Colorado River siphon, at Yuma,

Ariz............................. 35

Yuma main canal wasteway at Yuma, Ariz. 36

o